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,
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;
4817 && strcmp ((*sec)->name, ".opd") == 0)
4821 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4822 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4825 /* If the symbol is a function defined in .opd, and the function
4826 code is in a discarded group, let it appear to be undefined. */
4827 if (!info->relocatable
4828 && (*sec)->reloc_count != 0
4829 && opd_entry_value (*sec, *value, &code_sec, NULL,
4830 FALSE) != (bfd_vma) -1
4831 && discarded_section (code_sec))
4833 *sec = bfd_und_section_ptr;
4834 isym->st_shndx = SHN_UNDEF;
4838 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4840 if (abiversion (ibfd) == 0)
4841 set_abiversion (ibfd, 2);
4842 else if (abiversion (ibfd) == 1)
4844 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4845 " for ABI version 1\n"), name);
4846 bfd_set_error (bfd_error_bad_value);
4854 /* Merge non-visibility st_other attributes: local entry point. */
4857 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4858 const Elf_Internal_Sym *isym,
4859 bfd_boolean definition,
4860 bfd_boolean dynamic)
4862 if (definition && !dynamic)
4863 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4864 | ELF_ST_VISIBILITY (h->other));
4867 /* This function makes an old ABI object reference to ".bar" cause the
4868 inclusion of a new ABI object archive that defines "bar".
4869 NAME is a symbol defined in an archive. Return a symbol in the hash
4870 table that might be satisfied by the archive symbols. */
4872 static struct elf_link_hash_entry *
4873 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4874 struct bfd_link_info *info,
4877 struct elf_link_hash_entry *h;
4881 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4883 /* Don't return this sym if it is a fake function descriptor
4884 created by add_symbol_adjust. */
4885 && !(h->root.type == bfd_link_hash_undefweak
4886 && ((struct ppc_link_hash_entry *) h)->fake))
4892 len = strlen (name);
4893 dot_name = bfd_alloc (abfd, len + 2);
4894 if (dot_name == NULL)
4895 return (struct elf_link_hash_entry *) 0 - 1;
4897 memcpy (dot_name + 1, name, len + 1);
4898 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4899 bfd_release (abfd, dot_name);
4903 /* This function satisfies all old ABI object references to ".bar" if a
4904 new ABI object defines "bar". Well, at least, undefined dot symbols
4905 are made weak. This stops later archive searches from including an
4906 object if we already have a function descriptor definition. It also
4907 prevents the linker complaining about undefined symbols.
4908 We also check and correct mismatched symbol visibility here. The
4909 most restrictive visibility of the function descriptor and the
4910 function entry symbol is used. */
4913 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4915 struct ppc_link_hash_table *htab;
4916 struct ppc_link_hash_entry *fdh;
4918 if (eh->elf.root.type == bfd_link_hash_indirect)
4921 if (eh->elf.root.type == bfd_link_hash_warning)
4922 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4924 if (eh->elf.root.root.string[0] != '.')
4927 htab = ppc_hash_table (info);
4931 fdh = lookup_fdh (eh, htab);
4934 if (!info->relocatable
4935 && (eh->elf.root.type == bfd_link_hash_undefined
4936 || eh->elf.root.type == bfd_link_hash_undefweak)
4937 && eh->elf.ref_regular)
4939 /* Make an undefweak function descriptor sym, which is enough to
4940 pull in an --as-needed shared lib, but won't cause link
4941 errors. Archives are handled elsewhere. */
4942 fdh = make_fdh (info, eh);
4945 fdh->elf.ref_regular = 1;
4950 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4951 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4952 if (entry_vis < descr_vis)
4953 fdh->elf.other += entry_vis - descr_vis;
4954 else if (entry_vis > descr_vis)
4955 eh->elf.other += descr_vis - entry_vis;
4957 if ((fdh->elf.root.type == bfd_link_hash_defined
4958 || fdh->elf.root.type == bfd_link_hash_defweak)
4959 && eh->elf.root.type == bfd_link_hash_undefined)
4961 eh->elf.root.type = bfd_link_hash_undefweak;
4962 eh->was_undefined = 1;
4963 htab->twiddled_syms = 1;
4970 /* Set up opd section info and abiversion for IBFD, and process list
4971 of dot-symbols we made in link_hash_newfunc. */
4974 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4976 struct ppc_link_hash_table *htab;
4977 struct ppc_link_hash_entry **p, *eh;
4978 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4980 if (opd != NULL && opd->size != 0)
4982 if (abiversion (ibfd) == 0)
4983 set_abiversion (ibfd, 1);
4984 else if (abiversion (ibfd) == 2)
4986 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4988 ibfd, abiversion (ibfd));
4989 bfd_set_error (bfd_error_bad_value);
4993 if ((ibfd->flags & DYNAMIC) == 0
4994 && (opd->flags & SEC_RELOC) != 0
4995 && opd->reloc_count != 0
4996 && !bfd_is_abs_section (opd->output_section))
4998 /* Garbage collection needs some extra help with .opd sections.
4999 We don't want to necessarily keep everything referenced by
5000 relocs in .opd, as that would keep all functions. Instead,
5001 if we reference an .opd symbol (a function descriptor), we
5002 want to keep the function code symbol's section. This is
5003 easy for global symbols, but for local syms we need to keep
5004 information about the associated function section. */
5006 asection **opd_sym_map;
5008 amt = opd->size * sizeof (*opd_sym_map) / 8;
5009 opd_sym_map = bfd_zalloc (ibfd, amt);
5010 if (opd_sym_map == NULL)
5012 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5013 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5014 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5018 if (!is_ppc64_elf (info->output_bfd))
5020 htab = ppc_hash_table (info);
5024 /* For input files without an explicit abiversion in e_flags
5025 we should have flagged any with symbol st_other bits set
5026 as ELFv1 and above flagged those with .opd as ELFv2.
5027 Set the output abiversion if not yet set, and for any input
5028 still ambiguous, take its abiversion from the output.
5029 Differences in ABI are reported later. */
5030 if (abiversion (info->output_bfd) == 0)
5031 set_abiversion (info->output_bfd, abiversion (ibfd));
5032 else if (abiversion (ibfd) == 0)
5033 set_abiversion (ibfd, abiversion (info->output_bfd));
5035 p = &htab->dot_syms;
5036 while ((eh = *p) != NULL)
5039 if (&eh->elf == htab->elf.hgot)
5041 else if (htab->elf.hgot == NULL
5042 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5043 htab->elf.hgot = &eh->elf;
5044 else if (!add_symbol_adjust (eh, info))
5046 p = &eh->u.next_dot_sym;
5049 /* Clear the list for non-ppc64 input files. */
5050 p = &htab->dot_syms;
5051 while ((eh = *p) != NULL)
5054 p = &eh->u.next_dot_sym;
5057 /* We need to fix the undefs list for any syms we have twiddled to
5059 if (htab->twiddled_syms)
5061 bfd_link_repair_undef_list (&htab->elf.root);
5062 htab->twiddled_syms = 0;
5067 /* Undo hash table changes when an --as-needed input file is determined
5068 not to be needed. */
5071 ppc64_elf_notice_as_needed (bfd *ibfd,
5072 struct bfd_link_info *info,
5073 enum notice_asneeded_action act)
5075 if (act == notice_not_needed)
5077 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5082 htab->dot_syms = NULL;
5084 return _bfd_elf_notice_as_needed (ibfd, info, act);
5087 /* If --just-symbols against a final linked binary, then assume we need
5088 toc adjusting stubs when calling functions defined there. */
5091 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5093 if ((sec->flags & SEC_CODE) != 0
5094 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5095 && is_ppc64_elf (sec->owner))
5097 if (abiversion (sec->owner) >= 2
5098 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5099 sec->has_toc_reloc = 1;
5101 _bfd_elf_link_just_syms (sec, info);
5104 static struct plt_entry **
5105 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5106 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5108 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5109 struct plt_entry **local_plt;
5110 unsigned char *local_got_tls_masks;
5112 if (local_got_ents == NULL)
5114 bfd_size_type size = symtab_hdr->sh_info;
5116 size *= (sizeof (*local_got_ents)
5117 + sizeof (*local_plt)
5118 + sizeof (*local_got_tls_masks));
5119 local_got_ents = bfd_zalloc (abfd, size);
5120 if (local_got_ents == NULL)
5122 elf_local_got_ents (abfd) = local_got_ents;
5125 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5127 struct got_entry *ent;
5129 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5130 if (ent->addend == r_addend
5131 && ent->owner == abfd
5132 && ent->tls_type == tls_type)
5136 bfd_size_type amt = sizeof (*ent);
5137 ent = bfd_alloc (abfd, amt);
5140 ent->next = local_got_ents[r_symndx];
5141 ent->addend = r_addend;
5143 ent->tls_type = tls_type;
5144 ent->is_indirect = FALSE;
5145 ent->got.refcount = 0;
5146 local_got_ents[r_symndx] = ent;
5148 ent->got.refcount += 1;
5151 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5152 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5153 local_got_tls_masks[r_symndx] |= tls_type;
5155 return local_plt + r_symndx;
5159 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5161 struct plt_entry *ent;
5163 for (ent = *plist; ent != NULL; ent = ent->next)
5164 if (ent->addend == addend)
5168 bfd_size_type amt = sizeof (*ent);
5169 ent = bfd_alloc (abfd, amt);
5173 ent->addend = addend;
5174 ent->plt.refcount = 0;
5177 ent->plt.refcount += 1;
5182 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5184 return (r_type == R_PPC64_REL24
5185 || r_type == R_PPC64_REL14
5186 || r_type == R_PPC64_REL14_BRTAKEN
5187 || r_type == R_PPC64_REL14_BRNTAKEN
5188 || r_type == R_PPC64_ADDR24
5189 || r_type == R_PPC64_ADDR14
5190 || r_type == R_PPC64_ADDR14_BRTAKEN
5191 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5194 /* Look through the relocs for a section during the first phase, and
5195 calculate needed space in the global offset table, procedure
5196 linkage table, and dynamic reloc sections. */
5199 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5200 asection *sec, const Elf_Internal_Rela *relocs)
5202 struct ppc_link_hash_table *htab;
5203 Elf_Internal_Shdr *symtab_hdr;
5204 struct elf_link_hash_entry **sym_hashes;
5205 const Elf_Internal_Rela *rel;
5206 const Elf_Internal_Rela *rel_end;
5208 asection **opd_sym_map;
5209 struct elf_link_hash_entry *tga, *dottga;
5211 if (info->relocatable)
5214 /* Don't do anything special with non-loaded, non-alloced sections.
5215 In particular, any relocs in such sections should not affect GOT
5216 and PLT reference counting (ie. we don't allow them to create GOT
5217 or PLT entries), there's no possibility or desire to optimize TLS
5218 relocs, and there's not much point in propagating relocs to shared
5219 libs that the dynamic linker won't relocate. */
5220 if ((sec->flags & SEC_ALLOC) == 0)
5223 BFD_ASSERT (is_ppc64_elf (abfd));
5225 htab = ppc_hash_table (info);
5229 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5230 FALSE, FALSE, TRUE);
5231 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5232 FALSE, FALSE, TRUE);
5233 symtab_hdr = &elf_symtab_hdr (abfd);
5234 sym_hashes = elf_sym_hashes (abfd);
5237 if (ppc64_elf_section_data (sec) != NULL
5238 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5239 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5241 rel_end = relocs + sec->reloc_count;
5242 for (rel = relocs; rel < rel_end; rel++)
5244 unsigned long r_symndx;
5245 struct elf_link_hash_entry *h;
5246 enum elf_ppc64_reloc_type r_type;
5248 struct _ppc64_elf_section_data *ppc64_sec;
5249 struct plt_entry **ifunc;
5251 r_symndx = ELF64_R_SYM (rel->r_info);
5252 if (r_symndx < symtab_hdr->sh_info)
5256 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5257 h = elf_follow_link (h);
5259 /* PR15323, ref flags aren't set for references in the same
5261 h->root.non_ir_ref = 1;
5263 if (h == htab->elf.hgot)
5264 sec->has_toc_reloc = 1;
5271 if (h->type == STT_GNU_IFUNC)
5274 ifunc = &h->plt.plist;
5279 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5284 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5286 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5287 rel->r_addend, PLT_IFUNC);
5292 r_type = ELF64_R_TYPE (rel->r_info);
5293 if (is_branch_reloc (r_type))
5295 if (h != NULL && (h == tga || h == dottga))
5298 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5299 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5300 /* We have a new-style __tls_get_addr call with a marker
5304 /* Mark this section as having an old-style call. */
5305 sec->has_tls_get_addr_call = 1;
5308 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5310 && !update_plt_info (abfd, ifunc, rel->r_addend))
5318 /* These special tls relocs tie a call to __tls_get_addr with
5319 its parameter symbol. */
5322 case R_PPC64_GOT_TLSLD16:
5323 case R_PPC64_GOT_TLSLD16_LO:
5324 case R_PPC64_GOT_TLSLD16_HI:
5325 case R_PPC64_GOT_TLSLD16_HA:
5326 tls_type = TLS_TLS | TLS_LD;
5329 case R_PPC64_GOT_TLSGD16:
5330 case R_PPC64_GOT_TLSGD16_LO:
5331 case R_PPC64_GOT_TLSGD16_HI:
5332 case R_PPC64_GOT_TLSGD16_HA:
5333 tls_type = TLS_TLS | TLS_GD;
5336 case R_PPC64_GOT_TPREL16_DS:
5337 case R_PPC64_GOT_TPREL16_LO_DS:
5338 case R_PPC64_GOT_TPREL16_HI:
5339 case R_PPC64_GOT_TPREL16_HA:
5341 info->flags |= DF_STATIC_TLS;
5342 tls_type = TLS_TLS | TLS_TPREL;
5345 case R_PPC64_GOT_DTPREL16_DS:
5346 case R_PPC64_GOT_DTPREL16_LO_DS:
5347 case R_PPC64_GOT_DTPREL16_HI:
5348 case R_PPC64_GOT_DTPREL16_HA:
5349 tls_type = TLS_TLS | TLS_DTPREL;
5351 sec->has_tls_reloc = 1;
5355 case R_PPC64_GOT16_DS:
5356 case R_PPC64_GOT16_HA:
5357 case R_PPC64_GOT16_HI:
5358 case R_PPC64_GOT16_LO:
5359 case R_PPC64_GOT16_LO_DS:
5360 /* This symbol requires a global offset table entry. */
5361 sec->has_toc_reloc = 1;
5362 if (r_type == R_PPC64_GOT_TLSLD16
5363 || r_type == R_PPC64_GOT_TLSGD16
5364 || r_type == R_PPC64_GOT_TPREL16_DS
5365 || r_type == R_PPC64_GOT_DTPREL16_DS
5366 || r_type == R_PPC64_GOT16
5367 || r_type == R_PPC64_GOT16_DS)
5369 htab->do_multi_toc = 1;
5370 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5373 if (ppc64_elf_tdata (abfd)->got == NULL
5374 && !create_got_section (abfd, info))
5379 struct ppc_link_hash_entry *eh;
5380 struct got_entry *ent;
5382 eh = (struct ppc_link_hash_entry *) h;
5383 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5384 if (ent->addend == rel->r_addend
5385 && ent->owner == abfd
5386 && ent->tls_type == tls_type)
5390 bfd_size_type amt = sizeof (*ent);
5391 ent = bfd_alloc (abfd, amt);
5394 ent->next = eh->elf.got.glist;
5395 ent->addend = rel->r_addend;
5397 ent->tls_type = tls_type;
5398 ent->is_indirect = FALSE;
5399 ent->got.refcount = 0;
5400 eh->elf.got.glist = ent;
5402 ent->got.refcount += 1;
5403 eh->tls_mask |= tls_type;
5406 /* This is a global offset table entry for a local symbol. */
5407 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5408 rel->r_addend, tls_type))
5411 /* We may also need a plt entry if the symbol turns out to be
5413 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5415 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5420 case R_PPC64_PLT16_HA:
5421 case R_PPC64_PLT16_HI:
5422 case R_PPC64_PLT16_LO:
5425 /* This symbol requires a procedure linkage table entry. We
5426 actually build the entry in adjust_dynamic_symbol,
5427 because this might be a case of linking PIC code without
5428 linking in any dynamic objects, in which case we don't
5429 need to generate a procedure linkage table after all. */
5432 /* It does not make sense to have a procedure linkage
5433 table entry for a local symbol. */
5434 bfd_set_error (bfd_error_bad_value);
5439 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5442 if (h->root.root.string[0] == '.'
5443 && h->root.root.string[1] != '\0')
5444 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5448 /* The following relocations don't need to propagate the
5449 relocation if linking a shared object since they are
5450 section relative. */
5451 case R_PPC64_SECTOFF:
5452 case R_PPC64_SECTOFF_LO:
5453 case R_PPC64_SECTOFF_HI:
5454 case R_PPC64_SECTOFF_HA:
5455 case R_PPC64_SECTOFF_DS:
5456 case R_PPC64_SECTOFF_LO_DS:
5457 case R_PPC64_DTPREL16:
5458 case R_PPC64_DTPREL16_LO:
5459 case R_PPC64_DTPREL16_HI:
5460 case R_PPC64_DTPREL16_HA:
5461 case R_PPC64_DTPREL16_DS:
5462 case R_PPC64_DTPREL16_LO_DS:
5463 case R_PPC64_DTPREL16_HIGH:
5464 case R_PPC64_DTPREL16_HIGHA:
5465 case R_PPC64_DTPREL16_HIGHER:
5466 case R_PPC64_DTPREL16_HIGHERA:
5467 case R_PPC64_DTPREL16_HIGHEST:
5468 case R_PPC64_DTPREL16_HIGHESTA:
5473 case R_PPC64_REL16_LO:
5474 case R_PPC64_REL16_HI:
5475 case R_PPC64_REL16_HA:
5478 /* Not supported as a dynamic relocation. */
5479 case R_PPC64_ADDR64_LOCAL:
5482 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5484 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5485 "in shared libraries and PIEs.\n"),
5486 abfd, sec, rel->r_offset,
5487 ppc64_elf_howto_table[r_type]->name);
5488 bfd_set_error (bfd_error_bad_value);
5494 case R_PPC64_TOC16_DS:
5495 htab->do_multi_toc = 1;
5496 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5497 case R_PPC64_TOC16_LO:
5498 case R_PPC64_TOC16_HI:
5499 case R_PPC64_TOC16_HA:
5500 case R_PPC64_TOC16_LO_DS:
5501 sec->has_toc_reloc = 1;
5504 /* This relocation describes the C++ object vtable hierarchy.
5505 Reconstruct it for later use during GC. */
5506 case R_PPC64_GNU_VTINHERIT:
5507 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5511 /* This relocation describes which C++ vtable entries are actually
5512 used. Record for later use during GC. */
5513 case R_PPC64_GNU_VTENTRY:
5514 BFD_ASSERT (h != NULL);
5516 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5521 case R_PPC64_REL14_BRTAKEN:
5522 case R_PPC64_REL14_BRNTAKEN:
5524 asection *dest = NULL;
5526 /* Heuristic: If jumping outside our section, chances are
5527 we are going to need a stub. */
5530 /* If the sym is weak it may be overridden later, so
5531 don't assume we know where a weak sym lives. */
5532 if (h->root.type == bfd_link_hash_defined)
5533 dest = h->root.u.def.section;
5537 Elf_Internal_Sym *isym;
5539 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5544 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5548 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5553 if (h != NULL && ifunc == NULL)
5555 /* We may need a .plt entry if the function this reloc
5556 refers to is in a shared lib. */
5557 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5560 if (h->root.root.string[0] == '.'
5561 && h->root.root.string[1] != '\0')
5562 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5563 if (h == tga || h == dottga)
5564 sec->has_tls_reloc = 1;
5568 case R_PPC64_TPREL64:
5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5571 info->flags |= DF_STATIC_TLS;
5574 case R_PPC64_DTPMOD64:
5575 if (rel + 1 < rel_end
5576 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5577 && rel[1].r_offset == rel->r_offset + 8)
5578 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5580 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5583 case R_PPC64_DTPREL64:
5584 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5586 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5587 && rel[-1].r_offset == rel->r_offset - 8)
5588 /* This is the second reloc of a dtpmod, dtprel pair.
5589 Don't mark with TLS_DTPREL. */
5593 sec->has_tls_reloc = 1;
5596 struct ppc_link_hash_entry *eh;
5597 eh = (struct ppc_link_hash_entry *) h;
5598 eh->tls_mask |= tls_type;
5601 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5602 rel->r_addend, tls_type))
5605 ppc64_sec = ppc64_elf_section_data (sec);
5606 if (ppc64_sec->sec_type != sec_toc)
5610 /* One extra to simplify get_tls_mask. */
5611 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5612 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5613 if (ppc64_sec->u.toc.symndx == NULL)
5615 amt = sec->size * sizeof (bfd_vma) / 8;
5616 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5617 if (ppc64_sec->u.toc.add == NULL)
5619 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5620 ppc64_sec->sec_type = sec_toc;
5622 BFD_ASSERT (rel->r_offset % 8 == 0);
5623 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5624 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5626 /* Mark the second slot of a GD or LD entry.
5627 -1 to indicate GD and -2 to indicate LD. */
5628 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5629 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5630 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5631 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5634 case R_PPC64_TPREL16:
5635 case R_PPC64_TPREL16_LO:
5636 case R_PPC64_TPREL16_HI:
5637 case R_PPC64_TPREL16_HA:
5638 case R_PPC64_TPREL16_DS:
5639 case R_PPC64_TPREL16_LO_DS:
5640 case R_PPC64_TPREL16_HIGH:
5641 case R_PPC64_TPREL16_HIGHA:
5642 case R_PPC64_TPREL16_HIGHER:
5643 case R_PPC64_TPREL16_HIGHERA:
5644 case R_PPC64_TPREL16_HIGHEST:
5645 case R_PPC64_TPREL16_HIGHESTA:
5648 info->flags |= DF_STATIC_TLS;
5653 case R_PPC64_ADDR64:
5654 if (opd_sym_map != NULL
5655 && rel + 1 < rel_end
5656 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5660 if (h->root.root.string[0] == '.'
5661 && h->root.root.string[1] != 0
5662 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5665 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5670 Elf_Internal_Sym *isym;
5672 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5677 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5678 if (s != NULL && s != sec)
5679 opd_sym_map[rel->r_offset / 8] = s;
5684 case R_PPC64_ADDR16:
5685 case R_PPC64_ADDR16_DS:
5686 case R_PPC64_ADDR16_HA:
5687 case R_PPC64_ADDR16_HI:
5688 case R_PPC64_ADDR16_HIGH:
5689 case R_PPC64_ADDR16_HIGHA:
5690 case R_PPC64_ADDR16_HIGHER:
5691 case R_PPC64_ADDR16_HIGHERA:
5692 case R_PPC64_ADDR16_HIGHEST:
5693 case R_PPC64_ADDR16_HIGHESTA:
5694 case R_PPC64_ADDR16_LO:
5695 case R_PPC64_ADDR16_LO_DS:
5696 if (h != NULL && !info->shared && abiversion (abfd) != 1
5697 && rel->r_addend == 0)
5699 /* We may need a .plt entry if this reloc refers to a
5700 function in a shared lib. */
5701 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5703 h->pointer_equality_needed = 1;
5710 case R_PPC64_ADDR14:
5711 case R_PPC64_ADDR14_BRNTAKEN:
5712 case R_PPC64_ADDR14_BRTAKEN:
5713 case R_PPC64_ADDR24:
5714 case R_PPC64_ADDR32:
5715 case R_PPC64_UADDR16:
5716 case R_PPC64_UADDR32:
5717 case R_PPC64_UADDR64:
5719 if (h != NULL && !info->shared)
5720 /* We may need a copy reloc. */
5723 /* Don't propagate .opd relocs. */
5724 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5727 /* If we are creating a shared library, and this is a reloc
5728 against a global symbol, or a non PC relative reloc
5729 against a local symbol, then we need to copy the reloc
5730 into the shared library. However, if we are linking with
5731 -Bsymbolic, we do not need to copy a reloc against a
5732 global symbol which is defined in an object we are
5733 including in the link (i.e., DEF_REGULAR is set). At
5734 this point we have not seen all the input files, so it is
5735 possible that DEF_REGULAR is not set now but will be set
5736 later (it is never cleared). In case of a weak definition,
5737 DEF_REGULAR may be cleared later by a strong definition in
5738 a shared library. We account for that possibility below by
5739 storing information in the dyn_relocs field of the hash
5740 table entry. A similar situation occurs when creating
5741 shared libraries and symbol visibility changes render the
5744 If on the other hand, we are creating an executable, we
5745 may need to keep relocations for symbols satisfied by a
5746 dynamic library if we manage to avoid copy relocs for the
5750 && (must_be_dyn_reloc (info, r_type)
5752 && (!SYMBOLIC_BIND (info, h)
5753 || h->root.type == bfd_link_hash_defweak
5754 || !h->def_regular))))
5755 || (ELIMINATE_COPY_RELOCS
5758 && (h->root.type == bfd_link_hash_defweak
5759 || !h->def_regular))
5763 /* We must copy these reloc types into the output file.
5764 Create a reloc section in dynobj and make room for
5768 sreloc = _bfd_elf_make_dynamic_reloc_section
5769 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5775 /* If this is a global symbol, we count the number of
5776 relocations we need for this symbol. */
5779 struct elf_dyn_relocs *p;
5780 struct elf_dyn_relocs **head;
5782 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5784 if (p == NULL || p->sec != sec)
5786 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5796 if (!must_be_dyn_reloc (info, r_type))
5801 /* Track dynamic relocs needed for local syms too.
5802 We really need local syms available to do this
5804 struct ppc_dyn_relocs *p;
5805 struct ppc_dyn_relocs **head;
5806 bfd_boolean is_ifunc;
5809 Elf_Internal_Sym *isym;
5811 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5816 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5820 vpp = &elf_section_data (s)->local_dynrel;
5821 head = (struct ppc_dyn_relocs **) vpp;
5822 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5824 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5826 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5828 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5834 p->ifunc = is_ifunc;
5850 /* Merge backend specific data from an object file to the output
5851 object file when linking. */
5854 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5856 unsigned long iflags, oflags;
5858 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5861 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5864 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5867 iflags = elf_elfheader (ibfd)->e_flags;
5868 oflags = elf_elfheader (obfd)->e_flags;
5870 if (iflags & ~EF_PPC64_ABI)
5872 (*_bfd_error_handler)
5873 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5874 bfd_set_error (bfd_error_bad_value);
5877 else if (iflags != oflags && iflags != 0)
5879 (*_bfd_error_handler)
5880 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5881 ibfd, iflags, oflags);
5882 bfd_set_error (bfd_error_bad_value);
5886 /* Merge Tag_compatibility attributes and any common GNU ones. */
5887 _bfd_elf_merge_object_attributes (ibfd, obfd);
5893 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5895 /* Print normal ELF private data. */
5896 _bfd_elf_print_private_bfd_data (abfd, ptr);
5898 if (elf_elfheader (abfd)->e_flags != 0)
5902 /* xgettext:c-format */
5903 fprintf (file, _("private flags = 0x%lx:"),
5904 elf_elfheader (abfd)->e_flags);
5906 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5907 fprintf (file, _(" [abiv%ld]"),
5908 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5915 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5916 of the code entry point, and its section, which must be in the same
5917 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5920 opd_entry_value (asection *opd_sec,
5922 asection **code_sec,
5924 bfd_boolean in_code_sec)
5926 bfd *opd_bfd = opd_sec->owner;
5927 Elf_Internal_Rela *relocs;
5928 Elf_Internal_Rela *lo, *hi, *look;
5931 /* No relocs implies we are linking a --just-symbols object, or looking
5932 at a final linked executable with addr2line or somesuch. */
5933 if (opd_sec->reloc_count == 0)
5935 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5937 if (contents == NULL)
5939 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5940 return (bfd_vma) -1;
5941 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5944 val = bfd_get_64 (opd_bfd, contents + offset);
5945 if (code_sec != NULL)
5947 asection *sec, *likely = NULL;
5953 && val < sec->vma + sec->size)
5959 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5961 && (sec->flags & SEC_LOAD) != 0
5962 && (sec->flags & SEC_ALLOC) != 0)
5967 if (code_off != NULL)
5968 *code_off = val - likely->vma;
5974 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5976 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5978 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5980 /* Go find the opd reloc at the sym address. */
5982 BFD_ASSERT (lo != NULL);
5983 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5987 look = lo + (hi - lo) / 2;
5988 if (look->r_offset < offset)
5990 else if (look->r_offset > offset)
5994 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5996 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5997 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5999 unsigned long symndx = ELF64_R_SYM (look->r_info);
6000 asection *sec = NULL;
6002 if (symndx >= symtab_hdr->sh_info
6003 && elf_sym_hashes (opd_bfd) != NULL)
6005 struct elf_link_hash_entry **sym_hashes;
6006 struct elf_link_hash_entry *rh;
6008 sym_hashes = elf_sym_hashes (opd_bfd);
6009 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6012 rh = elf_follow_link (rh);
6013 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6014 || rh->root.type == bfd_link_hash_defweak);
6015 val = rh->root.u.def.value;
6016 sec = rh->root.u.def.section;
6017 if (sec->owner != opd_bfd)
6027 Elf_Internal_Sym *sym;
6029 if (symndx < symtab_hdr->sh_info)
6031 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6034 size_t symcnt = symtab_hdr->sh_info;
6035 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6040 symtab_hdr->contents = (bfd_byte *) sym;
6046 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6052 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6055 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6056 val = sym->st_value;
6059 val += look->r_addend;
6060 if (code_off != NULL)
6062 if (code_sec != NULL)
6064 if (in_code_sec && *code_sec != sec)
6069 if (sec->output_section != NULL)
6070 val += sec->output_section->vma + sec->output_offset;
6079 /* If the ELF symbol SYM might be a function in SEC, return the
6080 function size and set *CODE_OFF to the function's entry point,
6081 otherwise return zero. */
6083 static bfd_size_type
6084 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6089 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6090 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6094 if (!(sym->flags & BSF_SYNTHETIC))
6095 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6097 if (strcmp (sym->section->name, ".opd") == 0)
6099 if (opd_entry_value (sym->section, sym->value,
6100 &sec, code_off, TRUE) == (bfd_vma) -1)
6102 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6103 symbol. This size has nothing to do with the code size of the
6104 function, which is what we're supposed to return, but the
6105 code size isn't available without looking up the dot-sym.
6106 However, doing that would be a waste of time particularly
6107 since elf_find_function will look at the dot-sym anyway.
6108 Now, elf_find_function will keep the largest size of any
6109 function sym found at the code address of interest, so return
6110 1 here to avoid it incorrectly caching a larger function size
6111 for a small function. This does mean we return the wrong
6112 size for a new-ABI function of size 24, but all that does is
6113 disable caching for such functions. */
6119 if (sym->section != sec)
6121 *code_off = sym->value;
6128 /* Return true if symbol is defined in a regular object file. */
6131 is_static_defined (struct elf_link_hash_entry *h)
6133 return ((h->root.type == bfd_link_hash_defined
6134 || h->root.type == bfd_link_hash_defweak)
6135 && h->root.u.def.section != NULL
6136 && h->root.u.def.section->output_section != NULL);
6139 /* If FDH is a function descriptor symbol, return the associated code
6140 entry symbol if it is defined. Return NULL otherwise. */
6142 static struct ppc_link_hash_entry *
6143 defined_code_entry (struct ppc_link_hash_entry *fdh)
6145 if (fdh->is_func_descriptor)
6147 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6148 if (fh->elf.root.type == bfd_link_hash_defined
6149 || fh->elf.root.type == bfd_link_hash_defweak)
6155 /* If FH is a function code entry symbol, return the associated
6156 function descriptor symbol if it is defined. Return NULL otherwise. */
6158 static struct ppc_link_hash_entry *
6159 defined_func_desc (struct ppc_link_hash_entry *fh)
6162 && fh->oh->is_func_descriptor)
6164 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6165 if (fdh->elf.root.type == bfd_link_hash_defined
6166 || fdh->elf.root.type == bfd_link_hash_defweak)
6172 /* Mark all our entry sym sections, both opd and code section. */
6175 ppc64_elf_gc_keep (struct bfd_link_info *info)
6177 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6178 struct bfd_sym_chain *sym;
6183 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6185 struct ppc_link_hash_entry *eh, *fh;
6188 eh = (struct ppc_link_hash_entry *)
6189 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6192 if (eh->elf.root.type != bfd_link_hash_defined
6193 && eh->elf.root.type != bfd_link_hash_defweak)
6196 fh = defined_code_entry (eh);
6199 sec = fh->elf.root.u.def.section;
6200 sec->flags |= SEC_KEEP;
6202 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6203 && opd_entry_value (eh->elf.root.u.def.section,
6204 eh->elf.root.u.def.value,
6205 &sec, NULL, FALSE) != (bfd_vma) -1)
6206 sec->flags |= SEC_KEEP;
6208 sec = eh->elf.root.u.def.section;
6209 sec->flags |= SEC_KEEP;
6213 /* Mark sections containing dynamically referenced symbols. When
6214 building shared libraries, we must assume that any visible symbol is
6218 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6220 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6221 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6222 struct ppc_link_hash_entry *fdh;
6223 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6225 /* Dynamic linking info is on the func descriptor sym. */
6226 fdh = defined_func_desc (eh);
6230 if ((eh->elf.root.type == bfd_link_hash_defined
6231 || eh->elf.root.type == bfd_link_hash_defweak)
6232 && (eh->elf.ref_dynamic
6233 || (eh->elf.def_regular
6234 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6235 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6236 && (!info->executable
6237 || info->export_dynamic
6240 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6241 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6242 || !bfd_hide_sym_by_version (info->version_info,
6243 eh->elf.root.root.string)))))
6246 struct ppc_link_hash_entry *fh;
6248 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6250 /* Function descriptor syms cause the associated
6251 function code sym section to be marked. */
6252 fh = defined_code_entry (eh);
6255 code_sec = fh->elf.root.u.def.section;
6256 code_sec->flags |= SEC_KEEP;
6258 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6259 && opd_entry_value (eh->elf.root.u.def.section,
6260 eh->elf.root.u.def.value,
6261 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6262 code_sec->flags |= SEC_KEEP;
6268 /* Return the section that should be marked against GC for a given
6272 ppc64_elf_gc_mark_hook (asection *sec,
6273 struct bfd_link_info *info,
6274 Elf_Internal_Rela *rel,
6275 struct elf_link_hash_entry *h,
6276 Elf_Internal_Sym *sym)
6280 /* Syms return NULL if we're marking .opd, so we avoid marking all
6281 function sections, as all functions are referenced in .opd. */
6283 if (get_opd_info (sec) != NULL)
6288 enum elf_ppc64_reloc_type r_type;
6289 struct ppc_link_hash_entry *eh, *fh, *fdh;
6291 r_type = ELF64_R_TYPE (rel->r_info);
6294 case R_PPC64_GNU_VTINHERIT:
6295 case R_PPC64_GNU_VTENTRY:
6299 switch (h->root.type)
6301 case bfd_link_hash_defined:
6302 case bfd_link_hash_defweak:
6303 eh = (struct ppc_link_hash_entry *) h;
6304 fdh = defined_func_desc (eh);
6308 /* Function descriptor syms cause the associated
6309 function code sym section to be marked. */
6310 fh = defined_code_entry (eh);
6313 /* They also mark their opd section. */
6314 eh->elf.root.u.def.section->gc_mark = 1;
6316 rsec = fh->elf.root.u.def.section;
6318 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6319 && opd_entry_value (eh->elf.root.u.def.section,
6320 eh->elf.root.u.def.value,
6321 &rsec, NULL, FALSE) != (bfd_vma) -1)
6322 eh->elf.root.u.def.section->gc_mark = 1;
6324 rsec = h->root.u.def.section;
6327 case bfd_link_hash_common:
6328 rsec = h->root.u.c.p->section;
6332 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6338 struct _opd_sec_data *opd;
6340 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6341 opd = get_opd_info (rsec);
6342 if (opd != NULL && opd->func_sec != NULL)
6346 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6353 /* Update the .got, .plt. and dynamic reloc reference counts for the
6354 section being removed. */
6357 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6358 asection *sec, const Elf_Internal_Rela *relocs)
6360 struct ppc_link_hash_table *htab;
6361 Elf_Internal_Shdr *symtab_hdr;
6362 struct elf_link_hash_entry **sym_hashes;
6363 struct got_entry **local_got_ents;
6364 const Elf_Internal_Rela *rel, *relend;
6366 if (info->relocatable)
6369 if ((sec->flags & SEC_ALLOC) == 0)
6372 elf_section_data (sec)->local_dynrel = NULL;
6374 htab = ppc_hash_table (info);
6378 symtab_hdr = &elf_symtab_hdr (abfd);
6379 sym_hashes = elf_sym_hashes (abfd);
6380 local_got_ents = elf_local_got_ents (abfd);
6382 relend = relocs + sec->reloc_count;
6383 for (rel = relocs; rel < relend; rel++)
6385 unsigned long r_symndx;
6386 enum elf_ppc64_reloc_type r_type;
6387 struct elf_link_hash_entry *h = NULL;
6388 unsigned char tls_type = 0;
6390 r_symndx = ELF64_R_SYM (rel->r_info);
6391 r_type = ELF64_R_TYPE (rel->r_info);
6392 if (r_symndx >= symtab_hdr->sh_info)
6394 struct ppc_link_hash_entry *eh;
6395 struct elf_dyn_relocs **pp;
6396 struct elf_dyn_relocs *p;
6398 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6399 h = elf_follow_link (h);
6400 eh = (struct ppc_link_hash_entry *) h;
6402 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6405 /* Everything must go for SEC. */
6411 if (is_branch_reloc (r_type))
6413 struct plt_entry **ifunc = NULL;
6416 if (h->type == STT_GNU_IFUNC)
6417 ifunc = &h->plt.plist;
6419 else if (local_got_ents != NULL)
6421 struct plt_entry **local_plt = (struct plt_entry **)
6422 (local_got_ents + symtab_hdr->sh_info);
6423 unsigned char *local_got_tls_masks = (unsigned char *)
6424 (local_plt + symtab_hdr->sh_info);
6425 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6426 ifunc = local_plt + r_symndx;
6430 struct plt_entry *ent;
6432 for (ent = *ifunc; ent != NULL; ent = ent->next)
6433 if (ent->addend == rel->r_addend)
6437 if (ent->plt.refcount > 0)
6438 ent->plt.refcount -= 1;
6445 case R_PPC64_GOT_TLSLD16:
6446 case R_PPC64_GOT_TLSLD16_LO:
6447 case R_PPC64_GOT_TLSLD16_HI:
6448 case R_PPC64_GOT_TLSLD16_HA:
6449 tls_type = TLS_TLS | TLS_LD;
6452 case R_PPC64_GOT_TLSGD16:
6453 case R_PPC64_GOT_TLSGD16_LO:
6454 case R_PPC64_GOT_TLSGD16_HI:
6455 case R_PPC64_GOT_TLSGD16_HA:
6456 tls_type = TLS_TLS | TLS_GD;
6459 case R_PPC64_GOT_TPREL16_DS:
6460 case R_PPC64_GOT_TPREL16_LO_DS:
6461 case R_PPC64_GOT_TPREL16_HI:
6462 case R_PPC64_GOT_TPREL16_HA:
6463 tls_type = TLS_TLS | TLS_TPREL;
6466 case R_PPC64_GOT_DTPREL16_DS:
6467 case R_PPC64_GOT_DTPREL16_LO_DS:
6468 case R_PPC64_GOT_DTPREL16_HI:
6469 case R_PPC64_GOT_DTPREL16_HA:
6470 tls_type = TLS_TLS | TLS_DTPREL;
6474 case R_PPC64_GOT16_DS:
6475 case R_PPC64_GOT16_HA:
6476 case R_PPC64_GOT16_HI:
6477 case R_PPC64_GOT16_LO:
6478 case R_PPC64_GOT16_LO_DS:
6481 struct got_entry *ent;
6486 ent = local_got_ents[r_symndx];
6488 for (; ent != NULL; ent = ent->next)
6489 if (ent->addend == rel->r_addend
6490 && ent->owner == abfd
6491 && ent->tls_type == tls_type)
6495 if (ent->got.refcount > 0)
6496 ent->got.refcount -= 1;
6500 case R_PPC64_PLT16_HA:
6501 case R_PPC64_PLT16_HI:
6502 case R_PPC64_PLT16_LO:
6506 case R_PPC64_REL14_BRNTAKEN:
6507 case R_PPC64_REL14_BRTAKEN:
6511 struct plt_entry *ent;
6513 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6514 if (ent->addend == rel->r_addend)
6516 if (ent != NULL && ent->plt.refcount > 0)
6517 ent->plt.refcount -= 1;
6528 /* The maximum size of .sfpr. */
6529 #define SFPR_MAX (218*4)
6531 struct sfpr_def_parms
6533 const char name[12];
6534 unsigned char lo, hi;
6535 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6536 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6539 /* Auto-generate _save*, _rest* functions in .sfpr. */
6542 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6544 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6546 size_t len = strlen (parm->name);
6547 bfd_boolean writing = FALSE;
6553 memcpy (sym, parm->name, len);
6556 for (i = parm->lo; i <= parm->hi; i++)
6558 struct elf_link_hash_entry *h;
6560 sym[len + 0] = i / 10 + '0';
6561 sym[len + 1] = i % 10 + '0';
6562 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6566 h->root.type = bfd_link_hash_defined;
6567 h->root.u.def.section = htab->sfpr;
6568 h->root.u.def.value = htab->sfpr->size;
6571 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6573 if (htab->sfpr->contents == NULL)
6575 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6576 if (htab->sfpr->contents == NULL)
6582 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6584 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6586 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6587 htab->sfpr->size = p - htab->sfpr->contents;
6595 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6597 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6602 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6604 p = savegpr0 (abfd, p, r);
6605 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6607 bfd_put_32 (abfd, BLR, p);
6612 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6614 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6619 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6621 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6623 p = restgpr0 (abfd, p, r);
6624 bfd_put_32 (abfd, MTLR_R0, p);
6628 p = restgpr0 (abfd, p, 30);
6629 p = restgpr0 (abfd, p, 31);
6631 bfd_put_32 (abfd, BLR, p);
6636 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6638 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6643 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6645 p = savegpr1 (abfd, p, r);
6646 bfd_put_32 (abfd, BLR, p);
6651 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6653 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6658 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6660 p = restgpr1 (abfd, p, r);
6661 bfd_put_32 (abfd, BLR, p);
6666 savefpr (bfd *abfd, bfd_byte *p, int r)
6668 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6673 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6675 p = savefpr (abfd, p, r);
6676 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6678 bfd_put_32 (abfd, BLR, p);
6683 restfpr (bfd *abfd, bfd_byte *p, int r)
6685 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6690 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6692 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6694 p = restfpr (abfd, p, r);
6695 bfd_put_32 (abfd, MTLR_R0, p);
6699 p = restfpr (abfd, p, 30);
6700 p = restfpr (abfd, p, 31);
6702 bfd_put_32 (abfd, BLR, p);
6707 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6709 p = savefpr (abfd, p, r);
6710 bfd_put_32 (abfd, BLR, p);
6715 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6717 p = restfpr (abfd, p, r);
6718 bfd_put_32 (abfd, BLR, p);
6723 savevr (bfd *abfd, bfd_byte *p, int r)
6725 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6727 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6732 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6734 p = savevr (abfd, p, r);
6735 bfd_put_32 (abfd, BLR, p);
6740 restvr (bfd *abfd, bfd_byte *p, int r)
6742 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6744 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6749 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6751 p = restvr (abfd, p, r);
6752 bfd_put_32 (abfd, BLR, p);
6756 /* Called via elf_link_hash_traverse to transfer dynamic linking
6757 information on function code symbol entries to their corresponding
6758 function descriptor symbol entries. */
6761 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6763 struct bfd_link_info *info;
6764 struct ppc_link_hash_table *htab;
6765 struct plt_entry *ent;
6766 struct ppc_link_hash_entry *fh;
6767 struct ppc_link_hash_entry *fdh;
6768 bfd_boolean force_local;
6770 fh = (struct ppc_link_hash_entry *) h;
6771 if (fh->elf.root.type == bfd_link_hash_indirect)
6775 htab = ppc_hash_table (info);
6779 /* Resolve undefined references to dot-symbols as the value
6780 in the function descriptor, if we have one in a regular object.
6781 This is to satisfy cases like ".quad .foo". Calls to functions
6782 in dynamic objects are handled elsewhere. */
6783 if (fh->elf.root.type == bfd_link_hash_undefweak
6784 && fh->was_undefined
6785 && (fdh = defined_func_desc (fh)) != NULL
6786 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6787 && opd_entry_value (fdh->elf.root.u.def.section,
6788 fdh->elf.root.u.def.value,
6789 &fh->elf.root.u.def.section,
6790 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6792 fh->elf.root.type = fdh->elf.root.type;
6793 fh->elf.forced_local = 1;
6794 fh->elf.def_regular = fdh->elf.def_regular;
6795 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6798 /* If this is a function code symbol, transfer dynamic linking
6799 information to the function descriptor symbol. */
6803 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6804 if (ent->plt.refcount > 0)
6807 || fh->elf.root.root.string[0] != '.'
6808 || fh->elf.root.root.string[1] == '\0')
6811 /* Find the corresponding function descriptor symbol. Create it
6812 as undefined if necessary. */
6814 fdh = lookup_fdh (fh, htab);
6816 && !info->executable
6817 && (fh->elf.root.type == bfd_link_hash_undefined
6818 || fh->elf.root.type == bfd_link_hash_undefweak))
6820 fdh = make_fdh (info, fh);
6825 /* Fake function descriptors are made undefweak. If the function
6826 code symbol is strong undefined, make the fake sym the same.
6827 If the function code symbol is defined, then force the fake
6828 descriptor local; We can't support overriding of symbols in a
6829 shared library on a fake descriptor. */
6833 && fdh->elf.root.type == bfd_link_hash_undefweak)
6835 if (fh->elf.root.type == bfd_link_hash_undefined)
6837 fdh->elf.root.type = bfd_link_hash_undefined;
6838 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6840 else if (fh->elf.root.type == bfd_link_hash_defined
6841 || fh->elf.root.type == bfd_link_hash_defweak)
6843 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6848 && !fdh->elf.forced_local
6849 && (!info->executable
6850 || fdh->elf.def_dynamic
6851 || fdh->elf.ref_dynamic
6852 || (fdh->elf.root.type == bfd_link_hash_undefweak
6853 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6855 if (fdh->elf.dynindx == -1)
6856 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6858 fdh->elf.ref_regular |= fh->elf.ref_regular;
6859 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6860 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6861 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6862 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6864 move_plt_plist (fh, fdh);
6865 fdh->elf.needs_plt = 1;
6867 fdh->is_func_descriptor = 1;
6872 /* Now that the info is on the function descriptor, clear the
6873 function code sym info. Any function code syms for which we
6874 don't have a definition in a regular file, we force local.
6875 This prevents a shared library from exporting syms that have
6876 been imported from another library. Function code syms that
6877 are really in the library we must leave global to prevent the
6878 linker dragging in a definition from a static library. */
6879 force_local = (!fh->elf.def_regular
6881 || !fdh->elf.def_regular
6882 || fdh->elf.forced_local);
6883 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6888 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6889 this hook to a) provide some gcc support functions, and b) transfer
6890 dynamic linking information gathered so far on function code symbol
6891 entries, to their corresponding function descriptor symbol entries. */
6894 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6895 struct bfd_link_info *info)
6897 struct ppc_link_hash_table *htab;
6899 static const struct sfpr_def_parms funcs[] =
6901 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6902 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6903 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6904 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6905 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6906 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6907 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6908 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6909 { "._savef", 14, 31, savefpr, savefpr1_tail },
6910 { "._restf", 14, 31, restfpr, restfpr1_tail },
6911 { "_savevr_", 20, 31, savevr, savevr_tail },
6912 { "_restvr_", 20, 31, restvr, restvr_tail }
6915 htab = ppc_hash_table (info);
6919 if (!info->relocatable
6920 && htab->elf.hgot != NULL)
6922 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6923 /* Make .TOC. defined so as to prevent it being made dynamic.
6924 The wrong value here is fixed later in ppc64_elf_set_toc. */
6925 htab->elf.hgot->type = STT_OBJECT;
6926 htab->elf.hgot->root.type = bfd_link_hash_defined;
6927 htab->elf.hgot->root.u.def.value = 0;
6928 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6929 htab->elf.hgot->def_regular = 1;
6930 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6934 if (htab->sfpr == NULL)
6935 /* We don't have any relocs. */
6938 /* Provide any missing _save* and _rest* functions. */
6939 htab->sfpr->size = 0;
6940 if (htab->params->save_restore_funcs)
6941 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6942 if (!sfpr_define (info, &funcs[i]))
6945 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6947 if (htab->sfpr->size == 0)
6948 htab->sfpr->flags |= SEC_EXCLUDE;
6953 /* Return true if we have dynamic relocs that apply to read-only sections. */
6956 readonly_dynrelocs (struct elf_link_hash_entry *h)
6958 struct ppc_link_hash_entry *eh;
6959 struct elf_dyn_relocs *p;
6961 eh = (struct ppc_link_hash_entry *) h;
6962 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6964 asection *s = p->sec->output_section;
6966 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6972 /* Adjust a symbol defined by a dynamic object and referenced by a
6973 regular object. The current definition is in some section of the
6974 dynamic object, but we're not including those sections. We have to
6975 change the definition to something the rest of the link can
6979 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6980 struct elf_link_hash_entry *h)
6982 struct ppc_link_hash_table *htab;
6985 htab = ppc_hash_table (info);
6989 /* Deal with function syms. */
6990 if (h->type == STT_FUNC
6991 || h->type == STT_GNU_IFUNC
6994 /* Clear procedure linkage table information for any symbol that
6995 won't need a .plt entry. */
6996 struct plt_entry *ent;
6997 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6998 if (ent->plt.refcount > 0)
7001 || (h->type != STT_GNU_IFUNC
7002 && (SYMBOL_CALLS_LOCAL (info, h)
7003 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7004 && h->root.type == bfd_link_hash_undefweak))))
7006 h->plt.plist = NULL;
7008 h->pointer_equality_needed = 0;
7010 else if (abiversion (info->output_bfd) == 2)
7012 /* Taking a function's address in a read/write section
7013 doesn't require us to define the function symbol in the
7014 executable on a global entry stub. A dynamic reloc can
7016 if (h->pointer_equality_needed
7017 && h->type != STT_GNU_IFUNC
7018 && !readonly_dynrelocs (h))
7020 h->pointer_equality_needed = 0;
7024 /* After adjust_dynamic_symbol, non_got_ref set in the
7025 non-shared case means that we have allocated space in
7026 .dynbss for the symbol and thus dyn_relocs for this
7027 symbol should be discarded.
7028 If we get here we know we are making a PLT entry for this
7029 symbol, and in an executable we'd normally resolve
7030 relocations against this symbol to the PLT entry. Allow
7031 dynamic relocs if the reference is weak, and the dynamic
7032 relocs will not cause text relocation. */
7033 else if (!h->ref_regular_nonweak
7035 && h->type != STT_GNU_IFUNC
7036 && !readonly_dynrelocs (h))
7039 /* If making a plt entry, then we don't need copy relocs. */
7044 h->plt.plist = NULL;
7046 /* If this is a weak symbol, and there is a real definition, the
7047 processor independent code will have arranged for us to see the
7048 real definition first, and we can just use the same value. */
7049 if (h->u.weakdef != NULL)
7051 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7052 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7053 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7054 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7055 if (ELIMINATE_COPY_RELOCS)
7056 h->non_got_ref = h->u.weakdef->non_got_ref;
7060 /* If we are creating a shared library, we must presume that the
7061 only references to the symbol are via the global offset table.
7062 For such cases we need not do anything here; the relocations will
7063 be handled correctly by relocate_section. */
7067 /* If there are no references to this symbol that do not use the
7068 GOT, we don't need to generate a copy reloc. */
7069 if (!h->non_got_ref)
7072 /* Don't generate a copy reloc for symbols defined in the executable. */
7073 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7076 /* If we didn't find any dynamic relocs in read-only sections, then
7077 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7078 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7084 if (h->plt.plist != NULL)
7086 /* We should never get here, but unfortunately there are versions
7087 of gcc out there that improperly (for this ABI) put initialized
7088 function pointers, vtable refs and suchlike in read-only
7089 sections. Allow them to proceed, but warn that this might
7090 break at runtime. */
7091 info->callbacks->einfo
7092 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7093 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7094 h->root.root.string);
7097 /* This is a reference to a symbol defined by a dynamic object which
7098 is not a function. */
7100 /* We must allocate the symbol in our .dynbss section, which will
7101 become part of the .bss section of the executable. There will be
7102 an entry for this symbol in the .dynsym section. The dynamic
7103 object will contain position independent code, so all references
7104 from the dynamic object to this symbol will go through the global
7105 offset table. The dynamic linker will use the .dynsym entry to
7106 determine the address it must put in the global offset table, so
7107 both the dynamic object and the regular object will refer to the
7108 same memory location for the variable. */
7110 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7111 to copy the initial value out of the dynamic object and into the
7112 runtime process image. We need to remember the offset into the
7113 .rela.bss section we are going to use. */
7114 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7116 htab->relbss->size += sizeof (Elf64_External_Rela);
7122 return _bfd_elf_adjust_dynamic_copy (h, s);
7125 /* If given a function descriptor symbol, hide both the function code
7126 sym and the descriptor. */
7128 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7129 struct elf_link_hash_entry *h,
7130 bfd_boolean force_local)
7132 struct ppc_link_hash_entry *eh;
7133 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7135 eh = (struct ppc_link_hash_entry *) h;
7136 if (eh->is_func_descriptor)
7138 struct ppc_link_hash_entry *fh = eh->oh;
7143 struct ppc_link_hash_table *htab;
7146 /* We aren't supposed to use alloca in BFD because on
7147 systems which do not have alloca the version in libiberty
7148 calls xmalloc, which might cause the program to crash
7149 when it runs out of memory. This function doesn't have a
7150 return status, so there's no way to gracefully return an
7151 error. So cheat. We know that string[-1] can be safely
7152 accessed; It's either a string in an ELF string table,
7153 or allocated in an objalloc structure. */
7155 p = eh->elf.root.root.string - 1;
7158 htab = ppc_hash_table (info);
7162 fh = (struct ppc_link_hash_entry *)
7163 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7166 /* Unfortunately, if it so happens that the string we were
7167 looking for was allocated immediately before this string,
7168 then we overwrote the string terminator. That's the only
7169 reason the lookup should fail. */
7172 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7173 while (q >= eh->elf.root.root.string && *q == *p)
7175 if (q < eh->elf.root.root.string && *p == '.')
7176 fh = (struct ppc_link_hash_entry *)
7177 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7186 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7191 get_sym_h (struct elf_link_hash_entry **hp,
7192 Elf_Internal_Sym **symp,
7194 unsigned char **tls_maskp,
7195 Elf_Internal_Sym **locsymsp,
7196 unsigned long r_symndx,
7199 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7201 if (r_symndx >= symtab_hdr->sh_info)
7203 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7204 struct elf_link_hash_entry *h;
7206 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7207 h = elf_follow_link (h);
7215 if (symsecp != NULL)
7217 asection *symsec = NULL;
7218 if (h->root.type == bfd_link_hash_defined
7219 || h->root.type == bfd_link_hash_defweak)
7220 symsec = h->root.u.def.section;
7224 if (tls_maskp != NULL)
7226 struct ppc_link_hash_entry *eh;
7228 eh = (struct ppc_link_hash_entry *) h;
7229 *tls_maskp = &eh->tls_mask;
7234 Elf_Internal_Sym *sym;
7235 Elf_Internal_Sym *locsyms = *locsymsp;
7237 if (locsyms == NULL)
7239 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7240 if (locsyms == NULL)
7241 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7242 symtab_hdr->sh_info,
7243 0, NULL, NULL, NULL);
7244 if (locsyms == NULL)
7246 *locsymsp = locsyms;
7248 sym = locsyms + r_symndx;
7256 if (symsecp != NULL)
7257 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7259 if (tls_maskp != NULL)
7261 struct got_entry **lgot_ents;
7262 unsigned char *tls_mask;
7265 lgot_ents = elf_local_got_ents (ibfd);
7266 if (lgot_ents != NULL)
7268 struct plt_entry **local_plt = (struct plt_entry **)
7269 (lgot_ents + symtab_hdr->sh_info);
7270 unsigned char *lgot_masks = (unsigned char *)
7271 (local_plt + symtab_hdr->sh_info);
7272 tls_mask = &lgot_masks[r_symndx];
7274 *tls_maskp = tls_mask;
7280 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7281 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7282 type suitable for optimization, and 1 otherwise. */
7285 get_tls_mask (unsigned char **tls_maskp,
7286 unsigned long *toc_symndx,
7287 bfd_vma *toc_addend,
7288 Elf_Internal_Sym **locsymsp,
7289 const Elf_Internal_Rela *rel,
7292 unsigned long r_symndx;
7294 struct elf_link_hash_entry *h;
7295 Elf_Internal_Sym *sym;
7299 r_symndx = ELF64_R_SYM (rel->r_info);
7300 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7303 if ((*tls_maskp != NULL && **tls_maskp != 0)
7305 || ppc64_elf_section_data (sec) == NULL
7306 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7309 /* Look inside a TOC section too. */
7312 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7313 off = h->root.u.def.value;
7316 off = sym->st_value;
7317 off += rel->r_addend;
7318 BFD_ASSERT (off % 8 == 0);
7319 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7320 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7321 if (toc_symndx != NULL)
7322 *toc_symndx = r_symndx;
7323 if (toc_addend != NULL)
7324 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7325 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7327 if ((h == NULL || is_static_defined (h))
7328 && (next_r == -1 || next_r == -2))
7333 /* Find (or create) an entry in the tocsave hash table. */
7335 static struct tocsave_entry *
7336 tocsave_find (struct ppc_link_hash_table *htab,
7337 enum insert_option insert,
7338 Elf_Internal_Sym **local_syms,
7339 const Elf_Internal_Rela *irela,
7342 unsigned long r_indx;
7343 struct elf_link_hash_entry *h;
7344 Elf_Internal_Sym *sym;
7345 struct tocsave_entry ent, *p;
7347 struct tocsave_entry **slot;
7349 r_indx = ELF64_R_SYM (irela->r_info);
7350 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7352 if (ent.sec == NULL || ent.sec->output_section == NULL)
7354 (*_bfd_error_handler)
7355 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7360 ent.offset = h->root.u.def.value;
7362 ent.offset = sym->st_value;
7363 ent.offset += irela->r_addend;
7365 hash = tocsave_htab_hash (&ent);
7366 slot = ((struct tocsave_entry **)
7367 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7373 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7382 /* Adjust all global syms defined in opd sections. In gcc generated
7383 code for the old ABI, these will already have been done. */
7386 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7388 struct ppc_link_hash_entry *eh;
7390 struct _opd_sec_data *opd;
7392 if (h->root.type == bfd_link_hash_indirect)
7395 if (h->root.type != bfd_link_hash_defined
7396 && h->root.type != bfd_link_hash_defweak)
7399 eh = (struct ppc_link_hash_entry *) h;
7400 if (eh->adjust_done)
7403 sym_sec = eh->elf.root.u.def.section;
7404 opd = get_opd_info (sym_sec);
7405 if (opd != NULL && opd->adjust != NULL)
7407 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7410 /* This entry has been deleted. */
7411 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7414 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7415 if (discarded_section (dsec))
7417 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7421 eh->elf.root.u.def.value = 0;
7422 eh->elf.root.u.def.section = dsec;
7425 eh->elf.root.u.def.value += adjust;
7426 eh->adjust_done = 1;
7431 /* Handles decrementing dynamic reloc counts for the reloc specified by
7432 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7433 have already been determined. */
7436 dec_dynrel_count (bfd_vma r_info,
7438 struct bfd_link_info *info,
7439 Elf_Internal_Sym **local_syms,
7440 struct elf_link_hash_entry *h,
7441 Elf_Internal_Sym *sym)
7443 enum elf_ppc64_reloc_type r_type;
7444 asection *sym_sec = NULL;
7446 /* Can this reloc be dynamic? This switch, and later tests here
7447 should be kept in sync with the code in check_relocs. */
7448 r_type = ELF64_R_TYPE (r_info);
7454 case R_PPC64_TPREL16:
7455 case R_PPC64_TPREL16_LO:
7456 case R_PPC64_TPREL16_HI:
7457 case R_PPC64_TPREL16_HA:
7458 case R_PPC64_TPREL16_DS:
7459 case R_PPC64_TPREL16_LO_DS:
7460 case R_PPC64_TPREL16_HIGH:
7461 case R_PPC64_TPREL16_HIGHA:
7462 case R_PPC64_TPREL16_HIGHER:
7463 case R_PPC64_TPREL16_HIGHERA:
7464 case R_PPC64_TPREL16_HIGHEST:
7465 case R_PPC64_TPREL16_HIGHESTA:
7469 case R_PPC64_TPREL64:
7470 case R_PPC64_DTPMOD64:
7471 case R_PPC64_DTPREL64:
7472 case R_PPC64_ADDR64:
7476 case R_PPC64_ADDR14:
7477 case R_PPC64_ADDR14_BRNTAKEN:
7478 case R_PPC64_ADDR14_BRTAKEN:
7479 case R_PPC64_ADDR16:
7480 case R_PPC64_ADDR16_DS:
7481 case R_PPC64_ADDR16_HA:
7482 case R_PPC64_ADDR16_HI:
7483 case R_PPC64_ADDR16_HIGH:
7484 case R_PPC64_ADDR16_HIGHA:
7485 case R_PPC64_ADDR16_HIGHER:
7486 case R_PPC64_ADDR16_HIGHERA:
7487 case R_PPC64_ADDR16_HIGHEST:
7488 case R_PPC64_ADDR16_HIGHESTA:
7489 case R_PPC64_ADDR16_LO:
7490 case R_PPC64_ADDR16_LO_DS:
7491 case R_PPC64_ADDR24:
7492 case R_PPC64_ADDR32:
7493 case R_PPC64_UADDR16:
7494 case R_PPC64_UADDR32:
7495 case R_PPC64_UADDR64:
7500 if (local_syms != NULL)
7502 unsigned long r_symndx;
7503 bfd *ibfd = sec->owner;
7505 r_symndx = ELF64_R_SYM (r_info);
7506 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7511 && (must_be_dyn_reloc (info, r_type)
7513 && (!SYMBOLIC_BIND (info, h)
7514 || h->root.type == bfd_link_hash_defweak
7515 || !h->def_regular))))
7516 || (ELIMINATE_COPY_RELOCS
7519 && (h->root.type == bfd_link_hash_defweak
7520 || !h->def_regular)))
7527 struct elf_dyn_relocs *p;
7528 struct elf_dyn_relocs **pp;
7529 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7531 /* elf_gc_sweep may have already removed all dyn relocs associated
7532 with local syms for a given section. Also, symbol flags are
7533 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7534 report a dynreloc miscount. */
7535 if (*pp == NULL && info->gc_sections)
7538 while ((p = *pp) != NULL)
7542 if (!must_be_dyn_reloc (info, r_type))
7554 struct ppc_dyn_relocs *p;
7555 struct ppc_dyn_relocs **pp;
7557 bfd_boolean is_ifunc;
7559 if (local_syms == NULL)
7560 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7561 if (sym_sec == NULL)
7564 vpp = &elf_section_data (sym_sec)->local_dynrel;
7565 pp = (struct ppc_dyn_relocs **) vpp;
7567 if (*pp == NULL && info->gc_sections)
7570 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7571 while ((p = *pp) != NULL)
7573 if (p->sec == sec && p->ifunc == is_ifunc)
7584 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7586 bfd_set_error (bfd_error_bad_value);
7590 /* Remove unused Official Procedure Descriptor entries. Currently we
7591 only remove those associated with functions in discarded link-once
7592 sections, or weakly defined functions that have been overridden. It
7593 would be possible to remove many more entries for statically linked
7597 ppc64_elf_edit_opd (struct bfd_link_info *info)
7600 bfd_boolean some_edited = FALSE;
7601 asection *need_pad = NULL;
7602 struct ppc_link_hash_table *htab;
7604 htab = ppc_hash_table (info);
7608 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7611 Elf_Internal_Rela *relstart, *rel, *relend;
7612 Elf_Internal_Shdr *symtab_hdr;
7613 Elf_Internal_Sym *local_syms;
7615 struct _opd_sec_data *opd;
7616 bfd_boolean need_edit, add_aux_fields;
7617 bfd_size_type cnt_16b = 0;
7619 if (!is_ppc64_elf (ibfd))
7622 sec = bfd_get_section_by_name (ibfd, ".opd");
7623 if (sec == NULL || sec->size == 0)
7626 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7629 if (sec->output_section == bfd_abs_section_ptr)
7632 /* Look through the section relocs. */
7633 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7637 symtab_hdr = &elf_symtab_hdr (ibfd);
7639 /* Read the relocations. */
7640 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7642 if (relstart == NULL)
7645 /* First run through the relocs to check they are sane, and to
7646 determine whether we need to edit this opd section. */
7650 relend = relstart + sec->reloc_count;
7651 for (rel = relstart; rel < relend; )
7653 enum elf_ppc64_reloc_type r_type;
7654 unsigned long r_symndx;
7656 struct elf_link_hash_entry *h;
7657 Elf_Internal_Sym *sym;
7659 /* .opd contains a regular array of 16 or 24 byte entries. We're
7660 only interested in the reloc pointing to a function entry
7662 if (rel->r_offset != offset
7663 || rel + 1 >= relend
7664 || (rel + 1)->r_offset != offset + 8)
7666 /* If someone messes with .opd alignment then after a
7667 "ld -r" we might have padding in the middle of .opd.
7668 Also, there's nothing to prevent someone putting
7669 something silly in .opd with the assembler. No .opd
7670 optimization for them! */
7672 (*_bfd_error_handler)
7673 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7678 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7679 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7681 (*_bfd_error_handler)
7682 (_("%B: unexpected reloc type %u in .opd section"),
7688 r_symndx = ELF64_R_SYM (rel->r_info);
7689 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7693 if (sym_sec == NULL || sym_sec->owner == NULL)
7695 const char *sym_name;
7697 sym_name = h->root.root.string;
7699 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7702 (*_bfd_error_handler)
7703 (_("%B: undefined sym `%s' in .opd section"),
7709 /* opd entries are always for functions defined in the
7710 current input bfd. If the symbol isn't defined in the
7711 input bfd, then we won't be using the function in this
7712 bfd; It must be defined in a linkonce section in another
7713 bfd, or is weak. It's also possible that we are
7714 discarding the function due to a linker script /DISCARD/,
7715 which we test for via the output_section. */
7716 if (sym_sec->owner != ibfd
7717 || sym_sec->output_section == bfd_abs_section_ptr)
7722 || (rel + 1 == relend && rel->r_offset == offset + 16))
7724 if (sec->size == offset + 24)
7729 if (rel == relend && sec->size == offset + 16)
7737 if (rel->r_offset == offset + 24)
7739 else if (rel->r_offset != offset + 16)
7741 else if (rel + 1 < relend
7742 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7743 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7748 else if (rel + 2 < relend
7749 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7750 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7759 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7761 if (need_edit || add_aux_fields)
7763 Elf_Internal_Rela *write_rel;
7764 Elf_Internal_Shdr *rel_hdr;
7765 bfd_byte *rptr, *wptr;
7766 bfd_byte *new_contents;
7771 new_contents = NULL;
7772 amt = sec->size * sizeof (long) / 8;
7773 opd = &ppc64_elf_section_data (sec)->u.opd;
7774 opd->adjust = bfd_zalloc (sec->owner, amt);
7775 if (opd->adjust == NULL)
7777 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7779 /* This seems a waste of time as input .opd sections are all
7780 zeros as generated by gcc, but I suppose there's no reason
7781 this will always be so. We might start putting something in
7782 the third word of .opd entries. */
7783 if ((sec->flags & SEC_IN_MEMORY) == 0)
7786 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7791 if (local_syms != NULL
7792 && symtab_hdr->contents != (unsigned char *) local_syms)
7794 if (elf_section_data (sec)->relocs != relstart)
7798 sec->contents = loc;
7799 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7802 elf_section_data (sec)->relocs = relstart;
7804 new_contents = sec->contents;
7807 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7808 if (new_contents == NULL)
7812 wptr = new_contents;
7813 rptr = sec->contents;
7815 write_rel = relstart;
7819 for (rel = relstart; rel < relend; rel++)
7821 unsigned long r_symndx;
7823 struct elf_link_hash_entry *h;
7824 Elf_Internal_Sym *sym;
7826 r_symndx = ELF64_R_SYM (rel->r_info);
7827 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7831 if (rel->r_offset == offset)
7833 struct ppc_link_hash_entry *fdh = NULL;
7835 /* See if the .opd entry is full 24 byte or
7836 16 byte (with fd_aux entry overlapped with next
7839 if ((rel + 2 == relend && sec->size == offset + 16)
7840 || (rel + 3 < relend
7841 && rel[2].r_offset == offset + 16
7842 && rel[3].r_offset == offset + 24
7843 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7844 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7848 && h->root.root.string[0] == '.')
7850 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7852 && fdh->elf.root.type != bfd_link_hash_defined
7853 && fdh->elf.root.type != bfd_link_hash_defweak)
7857 skip = (sym_sec->owner != ibfd
7858 || sym_sec->output_section == bfd_abs_section_ptr);
7861 if (fdh != NULL && sym_sec->owner == ibfd)
7863 /* Arrange for the function descriptor sym
7865 fdh->elf.root.u.def.value = 0;
7866 fdh->elf.root.u.def.section = sym_sec;
7868 opd->adjust[rel->r_offset / 8] = -1;
7872 /* We'll be keeping this opd entry. */
7876 /* Redefine the function descriptor symbol to
7877 this location in the opd section. It is
7878 necessary to update the value here rather
7879 than using an array of adjustments as we do
7880 for local symbols, because various places
7881 in the generic ELF code use the value
7882 stored in u.def.value. */
7883 fdh->elf.root.u.def.value = wptr - new_contents;
7884 fdh->adjust_done = 1;
7887 /* Local syms are a bit tricky. We could
7888 tweak them as they can be cached, but
7889 we'd need to look through the local syms
7890 for the function descriptor sym which we
7891 don't have at the moment. So keep an
7892 array of adjustments. */
7893 opd->adjust[rel->r_offset / 8]
7894 = (wptr - new_contents) - (rptr - sec->contents);
7897 memcpy (wptr, rptr, opd_ent_size);
7898 wptr += opd_ent_size;
7899 if (add_aux_fields && opd_ent_size == 16)
7901 memset (wptr, '\0', 8);
7905 rptr += opd_ent_size;
7906 offset += opd_ent_size;
7912 && !info->relocatable
7913 && !dec_dynrel_count (rel->r_info, sec, info,
7919 /* We need to adjust any reloc offsets to point to the
7920 new opd entries. While we're at it, we may as well
7921 remove redundant relocs. */
7922 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7923 if (write_rel != rel)
7924 memcpy (write_rel, rel, sizeof (*rel));
7929 sec->size = wptr - new_contents;
7930 sec->reloc_count = write_rel - relstart;
7933 free (sec->contents);
7934 sec->contents = new_contents;
7937 /* Fudge the header size too, as this is used later in
7938 elf_bfd_final_link if we are emitting relocs. */
7939 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7940 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7943 else if (elf_section_data (sec)->relocs != relstart)
7946 if (local_syms != NULL
7947 && symtab_hdr->contents != (unsigned char *) local_syms)
7949 if (!info->keep_memory)
7952 symtab_hdr->contents = (unsigned char *) local_syms;
7957 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7959 /* If we are doing a final link and the last .opd entry is just 16 byte
7960 long, add a 8 byte padding after it. */
7961 if (need_pad != NULL && !info->relocatable)
7965 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7967 BFD_ASSERT (need_pad->size > 0);
7969 p = bfd_malloc (need_pad->size + 8);
7973 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7974 p, 0, need_pad->size))
7977 need_pad->contents = p;
7978 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7982 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7986 need_pad->contents = p;
7989 memset (need_pad->contents + need_pad->size, 0, 8);
7990 need_pad->size += 8;
7996 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7999 ppc64_elf_tls_setup (struct bfd_link_info *info)
8001 struct ppc_link_hash_table *htab;
8003 htab = ppc_hash_table (info);
8007 if (abiversion (info->output_bfd) == 1)
8010 if (htab->params->no_multi_toc)
8011 htab->do_multi_toc = 0;
8012 else if (!htab->do_multi_toc)
8013 htab->params->no_multi_toc = 1;
8015 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8016 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8017 FALSE, FALSE, TRUE));
8018 /* Move dynamic linking info to the function descriptor sym. */
8019 if (htab->tls_get_addr != NULL)
8020 func_desc_adjust (&htab->tls_get_addr->elf, info);
8021 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8022 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8023 FALSE, FALSE, TRUE));
8024 if (!htab->params->no_tls_get_addr_opt)
8026 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8028 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8029 FALSE, FALSE, TRUE);
8031 func_desc_adjust (opt, info);
8032 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8033 FALSE, FALSE, TRUE);
8035 && (opt_fd->root.type == bfd_link_hash_defined
8036 || opt_fd->root.type == bfd_link_hash_defweak))
8038 /* If glibc supports an optimized __tls_get_addr call stub,
8039 signalled by the presence of __tls_get_addr_opt, and we'll
8040 be calling __tls_get_addr via a plt call stub, then
8041 make __tls_get_addr point to __tls_get_addr_opt. */
8042 tga_fd = &htab->tls_get_addr_fd->elf;
8043 if (htab->elf.dynamic_sections_created
8045 && (tga_fd->type == STT_FUNC
8046 || tga_fd->needs_plt)
8047 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8048 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8049 && tga_fd->root.type == bfd_link_hash_undefweak)))
8051 struct plt_entry *ent;
8053 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8054 if (ent->plt.refcount > 0)
8058 tga_fd->root.type = bfd_link_hash_indirect;
8059 tga_fd->root.u.i.link = &opt_fd->root;
8060 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8061 if (opt_fd->dynindx != -1)
8063 /* Use __tls_get_addr_opt in dynamic relocations. */
8064 opt_fd->dynindx = -1;
8065 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8066 opt_fd->dynstr_index);
8067 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8070 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8071 tga = &htab->tls_get_addr->elf;
8072 if (opt != NULL && tga != NULL)
8074 tga->root.type = bfd_link_hash_indirect;
8075 tga->root.u.i.link = &opt->root;
8076 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8077 _bfd_elf_link_hash_hide_symbol (info, opt,
8079 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8081 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8082 htab->tls_get_addr_fd->is_func_descriptor = 1;
8083 if (htab->tls_get_addr != NULL)
8085 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8086 htab->tls_get_addr->is_func = 1;
8092 htab->params->no_tls_get_addr_opt = TRUE;
8094 return _bfd_elf_tls_setup (info->output_bfd, info);
8097 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8101 branch_reloc_hash_match (const bfd *ibfd,
8102 const Elf_Internal_Rela *rel,
8103 const struct ppc_link_hash_entry *hash1,
8104 const struct ppc_link_hash_entry *hash2)
8106 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8107 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8108 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8110 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8112 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8113 struct elf_link_hash_entry *h;
8115 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8116 h = elf_follow_link (h);
8117 if (h == &hash1->elf || h == &hash2->elf)
8123 /* Run through all the TLS relocs looking for optimization
8124 opportunities. The linker has been hacked (see ppc64elf.em) to do
8125 a preliminary section layout so that we know the TLS segment
8126 offsets. We can't optimize earlier because some optimizations need
8127 to know the tp offset, and we need to optimize before allocating
8128 dynamic relocations. */
8131 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8135 struct ppc_link_hash_table *htab;
8136 unsigned char *toc_ref;
8139 if (info->relocatable || !info->executable)
8142 htab = ppc_hash_table (info);
8146 /* Make two passes over the relocs. On the first pass, mark toc
8147 entries involved with tls relocs, and check that tls relocs
8148 involved in setting up a tls_get_addr call are indeed followed by
8149 such a call. If they are not, we can't do any tls optimization.
8150 On the second pass twiddle tls_mask flags to notify
8151 relocate_section that optimization can be done, and adjust got
8152 and plt refcounts. */
8154 for (pass = 0; pass < 2; ++pass)
8155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8157 Elf_Internal_Sym *locsyms = NULL;
8158 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8160 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8161 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8163 Elf_Internal_Rela *relstart, *rel, *relend;
8164 bfd_boolean found_tls_get_addr_arg = 0;
8166 /* Read the relocations. */
8167 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8169 if (relstart == NULL)
8175 relend = relstart + sec->reloc_count;
8176 for (rel = relstart; rel < relend; rel++)
8178 enum elf_ppc64_reloc_type r_type;
8179 unsigned long r_symndx;
8180 struct elf_link_hash_entry *h;
8181 Elf_Internal_Sym *sym;
8183 unsigned char *tls_mask;
8184 unsigned char tls_set, tls_clear, tls_type = 0;
8186 bfd_boolean ok_tprel, is_local;
8187 long toc_ref_index = 0;
8188 int expecting_tls_get_addr = 0;
8189 bfd_boolean ret = FALSE;
8191 r_symndx = ELF64_R_SYM (rel->r_info);
8192 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8196 if (elf_section_data (sec)->relocs != relstart)
8198 if (toc_ref != NULL)
8201 && (elf_symtab_hdr (ibfd).contents
8202 != (unsigned char *) locsyms))
8209 if (h->root.type == bfd_link_hash_defined
8210 || h->root.type == bfd_link_hash_defweak)
8211 value = h->root.u.def.value;
8212 else if (h->root.type == bfd_link_hash_undefweak)
8216 found_tls_get_addr_arg = 0;
8221 /* Symbols referenced by TLS relocs must be of type
8222 STT_TLS. So no need for .opd local sym adjust. */
8223 value = sym->st_value;
8232 && h->root.type == bfd_link_hash_undefweak)
8236 value += sym_sec->output_offset;
8237 value += sym_sec->output_section->vma;
8238 value -= htab->elf.tls_sec->vma;
8239 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8240 < (bfd_vma) 1 << 32);
8244 r_type = ELF64_R_TYPE (rel->r_info);
8245 /* If this section has old-style __tls_get_addr calls
8246 without marker relocs, then check that each
8247 __tls_get_addr call reloc is preceded by a reloc
8248 that conceivably belongs to the __tls_get_addr arg
8249 setup insn. If we don't find matching arg setup
8250 relocs, don't do any tls optimization. */
8252 && sec->has_tls_get_addr_call
8254 && (h == &htab->tls_get_addr->elf
8255 || h == &htab->tls_get_addr_fd->elf)
8256 && !found_tls_get_addr_arg
8257 && is_branch_reloc (r_type))
8259 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8260 "TLS optimization disabled\n"),
8261 ibfd, sec, rel->r_offset);
8266 found_tls_get_addr_arg = 0;
8269 case R_PPC64_GOT_TLSLD16:
8270 case R_PPC64_GOT_TLSLD16_LO:
8271 expecting_tls_get_addr = 1;
8272 found_tls_get_addr_arg = 1;
8275 case R_PPC64_GOT_TLSLD16_HI:
8276 case R_PPC64_GOT_TLSLD16_HA:
8277 /* These relocs should never be against a symbol
8278 defined in a shared lib. Leave them alone if
8279 that turns out to be the case. */
8286 tls_type = TLS_TLS | TLS_LD;
8289 case R_PPC64_GOT_TLSGD16:
8290 case R_PPC64_GOT_TLSGD16_LO:
8291 expecting_tls_get_addr = 1;
8292 found_tls_get_addr_arg = 1;
8295 case R_PPC64_GOT_TLSGD16_HI:
8296 case R_PPC64_GOT_TLSGD16_HA:
8302 tls_set = TLS_TLS | TLS_TPRELGD;
8304 tls_type = TLS_TLS | TLS_GD;
8307 case R_PPC64_GOT_TPREL16_DS:
8308 case R_PPC64_GOT_TPREL16_LO_DS:
8309 case R_PPC64_GOT_TPREL16_HI:
8310 case R_PPC64_GOT_TPREL16_HA:
8315 tls_clear = TLS_TPREL;
8316 tls_type = TLS_TLS | TLS_TPREL;
8323 found_tls_get_addr_arg = 1;
8328 case R_PPC64_TOC16_LO:
8329 if (sym_sec == NULL || sym_sec != toc)
8332 /* Mark this toc entry as referenced by a TLS
8333 code sequence. We can do that now in the
8334 case of R_PPC64_TLS, and after checking for
8335 tls_get_addr for the TOC16 relocs. */
8336 if (toc_ref == NULL)
8337 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8338 if (toc_ref == NULL)
8342 value = h->root.u.def.value;
8344 value = sym->st_value;
8345 value += rel->r_addend;
8346 BFD_ASSERT (value < toc->size && value % 8 == 0);
8347 toc_ref_index = (value + toc->output_offset) / 8;
8348 if (r_type == R_PPC64_TLS
8349 || r_type == R_PPC64_TLSGD
8350 || r_type == R_PPC64_TLSLD)
8352 toc_ref[toc_ref_index] = 1;
8356 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8361 expecting_tls_get_addr = 2;
8364 case R_PPC64_TPREL64:
8368 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8373 tls_set = TLS_EXPLICIT;
8374 tls_clear = TLS_TPREL;
8379 case R_PPC64_DTPMOD64:
8383 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8385 if (rel + 1 < relend
8387 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8388 && rel[1].r_offset == rel->r_offset + 8)
8392 tls_set = TLS_EXPLICIT | TLS_GD;
8395 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8404 tls_set = TLS_EXPLICIT;
8415 if (!expecting_tls_get_addr
8416 || !sec->has_tls_get_addr_call)
8419 if (rel + 1 < relend
8420 && branch_reloc_hash_match (ibfd, rel + 1,
8422 htab->tls_get_addr_fd))
8424 if (expecting_tls_get_addr == 2)
8426 /* Check for toc tls entries. */
8427 unsigned char *toc_tls;
8430 retval = get_tls_mask (&toc_tls, NULL, NULL,
8435 if (toc_tls != NULL)
8437 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8438 found_tls_get_addr_arg = 1;
8440 toc_ref[toc_ref_index] = 1;
8446 if (expecting_tls_get_addr != 1)
8449 /* Uh oh, we didn't find the expected call. We
8450 could just mark this symbol to exclude it
8451 from tls optimization but it's safer to skip
8452 the entire optimization. */
8453 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8454 "TLS optimization disabled\n"),
8455 ibfd, sec, rel->r_offset);
8460 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8462 struct plt_entry *ent;
8463 for (ent = htab->tls_get_addr->elf.plt.plist;
8466 if (ent->addend == 0)
8468 if (ent->plt.refcount > 0)
8470 ent->plt.refcount -= 1;
8471 expecting_tls_get_addr = 0;
8477 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8479 struct plt_entry *ent;
8480 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8483 if (ent->addend == 0)
8485 if (ent->plt.refcount > 0)
8486 ent->plt.refcount -= 1;
8494 if ((tls_set & TLS_EXPLICIT) == 0)
8496 struct got_entry *ent;
8498 /* Adjust got entry for this reloc. */
8502 ent = elf_local_got_ents (ibfd)[r_symndx];
8504 for (; ent != NULL; ent = ent->next)
8505 if (ent->addend == rel->r_addend
8506 && ent->owner == ibfd
8507 && ent->tls_type == tls_type)
8514 /* We managed to get rid of a got entry. */
8515 if (ent->got.refcount > 0)
8516 ent->got.refcount -= 1;
8521 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8522 we'll lose one or two dyn relocs. */
8523 if (!dec_dynrel_count (rel->r_info, sec, info,
8527 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8529 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8535 *tls_mask |= tls_set;
8536 *tls_mask &= ~tls_clear;
8539 if (elf_section_data (sec)->relocs != relstart)
8544 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8546 if (!info->keep_memory)
8549 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8553 if (toc_ref != NULL)
8558 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8559 the values of any global symbols in a toc section that has been
8560 edited. Globals in toc sections should be a rarity, so this function
8561 sets a flag if any are found in toc sections other than the one just
8562 edited, so that futher hash table traversals can be avoided. */
8564 struct adjust_toc_info
8567 unsigned long *skip;
8568 bfd_boolean global_toc_syms;
8571 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8574 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8576 struct ppc_link_hash_entry *eh;
8577 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8580 if (h->root.type != bfd_link_hash_defined
8581 && h->root.type != bfd_link_hash_defweak)
8584 eh = (struct ppc_link_hash_entry *) h;
8585 if (eh->adjust_done)
8588 if (eh->elf.root.u.def.section == toc_inf->toc)
8590 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8591 i = toc_inf->toc->rawsize >> 3;
8593 i = eh->elf.root.u.def.value >> 3;
8595 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8597 (*_bfd_error_handler)
8598 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8601 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8602 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8605 eh->elf.root.u.def.value -= toc_inf->skip[i];
8606 eh->adjust_done = 1;
8608 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8609 toc_inf->global_toc_syms = TRUE;
8614 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8617 ok_lo_toc_insn (unsigned int insn)
8619 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8620 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8621 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8622 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8623 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8624 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8625 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8626 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8627 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8628 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8629 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8630 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8631 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8632 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8633 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8635 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8636 && ((insn & 3) == 0 || (insn & 3) == 3))
8637 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8640 /* Examine all relocs referencing .toc sections in order to remove
8641 unused .toc entries. */
8644 ppc64_elf_edit_toc (struct bfd_link_info *info)
8647 struct adjust_toc_info toc_inf;
8648 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8650 htab->do_toc_opt = 1;
8651 toc_inf.global_toc_syms = TRUE;
8652 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8654 asection *toc, *sec;
8655 Elf_Internal_Shdr *symtab_hdr;
8656 Elf_Internal_Sym *local_syms;
8657 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8658 unsigned long *skip, *drop;
8659 unsigned char *used;
8660 unsigned char *keep, last, some_unused;
8662 if (!is_ppc64_elf (ibfd))
8665 toc = bfd_get_section_by_name (ibfd, ".toc");
8668 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8669 || discarded_section (toc))
8674 symtab_hdr = &elf_symtab_hdr (ibfd);
8676 /* Look at sections dropped from the final link. */
8679 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8681 if (sec->reloc_count == 0
8682 || !discarded_section (sec)
8683 || get_opd_info (sec)
8684 || (sec->flags & SEC_ALLOC) == 0
8685 || (sec->flags & SEC_DEBUGGING) != 0)
8688 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8689 if (relstart == NULL)
8692 /* Run through the relocs to see which toc entries might be
8694 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8696 enum elf_ppc64_reloc_type r_type;
8697 unsigned long r_symndx;
8699 struct elf_link_hash_entry *h;
8700 Elf_Internal_Sym *sym;
8703 r_type = ELF64_R_TYPE (rel->r_info);
8710 case R_PPC64_TOC16_LO:
8711 case R_PPC64_TOC16_HI:
8712 case R_PPC64_TOC16_HA:
8713 case R_PPC64_TOC16_DS:
8714 case R_PPC64_TOC16_LO_DS:
8718 r_symndx = ELF64_R_SYM (rel->r_info);
8719 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8727 val = h->root.u.def.value;
8729 val = sym->st_value;
8730 val += rel->r_addend;
8732 if (val >= toc->size)
8735 /* Anything in the toc ought to be aligned to 8 bytes.
8736 If not, don't mark as unused. */
8742 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8747 skip[val >> 3] = ref_from_discarded;
8750 if (elf_section_data (sec)->relocs != relstart)
8754 /* For largetoc loads of address constants, we can convert
8755 . addis rx,2,addr@got@ha
8756 . ld ry,addr@got@l(rx)
8758 . addis rx,2,addr@toc@ha
8759 . addi ry,rx,addr@toc@l
8760 when addr is within 2G of the toc pointer. This then means
8761 that the word storing "addr" in the toc is no longer needed. */
8763 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8764 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8765 && toc->reloc_count != 0)
8767 /* Read toc relocs. */
8768 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8770 if (toc_relocs == NULL)
8773 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8775 enum elf_ppc64_reloc_type r_type;
8776 unsigned long r_symndx;
8778 struct elf_link_hash_entry *h;
8779 Elf_Internal_Sym *sym;
8782 r_type = ELF64_R_TYPE (rel->r_info);
8783 if (r_type != R_PPC64_ADDR64)
8786 r_symndx = ELF64_R_SYM (rel->r_info);
8787 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8792 || discarded_section (sym_sec))
8795 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8800 if (h->type == STT_GNU_IFUNC)
8802 val = h->root.u.def.value;
8806 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8808 val = sym->st_value;
8810 val += rel->r_addend;
8811 val += sym_sec->output_section->vma + sym_sec->output_offset;
8813 /* We don't yet know the exact toc pointer value, but we
8814 know it will be somewhere in the toc section. Don't
8815 optimize if the difference from any possible toc
8816 pointer is outside [ff..f80008000, 7fff7fff]. */
8817 addr = toc->output_section->vma + TOC_BASE_OFF;
8818 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8821 addr = toc->output_section->vma + toc->output_section->rawsize;
8822 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8827 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8832 skip[rel->r_offset >> 3]
8833 |= can_optimize | ((rel - toc_relocs) << 2);
8840 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8844 if (local_syms != NULL
8845 && symtab_hdr->contents != (unsigned char *) local_syms)
8849 && elf_section_data (sec)->relocs != relstart)
8851 if (toc_relocs != NULL
8852 && elf_section_data (toc)->relocs != toc_relocs)
8859 /* Now check all kept sections that might reference the toc.
8860 Check the toc itself last. */
8861 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8864 sec = (sec == toc ? NULL
8865 : sec->next == NULL ? toc
8866 : sec->next == toc && toc->next ? toc->next
8871 if (sec->reloc_count == 0
8872 || discarded_section (sec)
8873 || get_opd_info (sec)
8874 || (sec->flags & SEC_ALLOC) == 0
8875 || (sec->flags & SEC_DEBUGGING) != 0)
8878 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8880 if (relstart == NULL)
8886 /* Mark toc entries referenced as used. */
8890 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8892 enum elf_ppc64_reloc_type r_type;
8893 unsigned long r_symndx;
8895 struct elf_link_hash_entry *h;
8896 Elf_Internal_Sym *sym;
8898 enum {no_check, check_lo, check_ha} insn_check;
8900 r_type = ELF64_R_TYPE (rel->r_info);
8904 insn_check = no_check;
8907 case R_PPC64_GOT_TLSLD16_HA:
8908 case R_PPC64_GOT_TLSGD16_HA:
8909 case R_PPC64_GOT_TPREL16_HA:
8910 case R_PPC64_GOT_DTPREL16_HA:
8911 case R_PPC64_GOT16_HA:
8912 case R_PPC64_TOC16_HA:
8913 insn_check = check_ha;
8916 case R_PPC64_GOT_TLSLD16_LO:
8917 case R_PPC64_GOT_TLSGD16_LO:
8918 case R_PPC64_GOT_TPREL16_LO_DS:
8919 case R_PPC64_GOT_DTPREL16_LO_DS:
8920 case R_PPC64_GOT16_LO:
8921 case R_PPC64_GOT16_LO_DS:
8922 case R_PPC64_TOC16_LO:
8923 case R_PPC64_TOC16_LO_DS:
8924 insn_check = check_lo;
8928 if (insn_check != no_check)
8930 bfd_vma off = rel->r_offset & ~3;
8931 unsigned char buf[4];
8934 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8939 insn = bfd_get_32 (ibfd, buf);
8940 if (insn_check == check_lo
8941 ? !ok_lo_toc_insn (insn)
8942 : ((insn & ((0x3f << 26) | 0x1f << 16))
8943 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8947 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8948 sprintf (str, "%#08x", insn);
8949 info->callbacks->einfo
8950 (_("%P: %H: toc optimization is not supported for"
8951 " %s instruction.\n"),
8952 ibfd, sec, rel->r_offset & ~3, str);
8959 case R_PPC64_TOC16_LO:
8960 case R_PPC64_TOC16_HI:
8961 case R_PPC64_TOC16_HA:
8962 case R_PPC64_TOC16_DS:
8963 case R_PPC64_TOC16_LO_DS:
8964 /* In case we're taking addresses of toc entries. */
8965 case R_PPC64_ADDR64:
8972 r_symndx = ELF64_R_SYM (rel->r_info);
8973 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8984 val = h->root.u.def.value;
8986 val = sym->st_value;
8987 val += rel->r_addend;
8989 if (val >= toc->size)
8992 if ((skip[val >> 3] & can_optimize) != 0)
8999 case R_PPC64_TOC16_HA:
9002 case R_PPC64_TOC16_LO_DS:
9003 off = rel->r_offset;
9004 off += (bfd_big_endian (ibfd) ? -2 : 3);
9005 if (!bfd_get_section_contents (ibfd, sec, &opc,
9011 if ((opc & (0x3f << 2)) == (58u << 2))
9016 /* Wrong sort of reloc, or not a ld. We may
9017 as well clear ref_from_discarded too. */
9024 /* For the toc section, we only mark as used if this
9025 entry itself isn't unused. */
9026 else if ((used[rel->r_offset >> 3]
9027 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9030 /* Do all the relocs again, to catch reference
9039 if (elf_section_data (sec)->relocs != relstart)
9043 /* Merge the used and skip arrays. Assume that TOC
9044 doublewords not appearing as either used or unused belong
9045 to to an entry more than one doubleword in size. */
9046 for (drop = skip, keep = used, last = 0, some_unused = 0;
9047 drop < skip + (toc->size + 7) / 8;
9052 *drop &= ~ref_from_discarded;
9053 if ((*drop & can_optimize) != 0)
9057 else if ((*drop & ref_from_discarded) != 0)
9060 last = ref_from_discarded;
9070 bfd_byte *contents, *src;
9072 Elf_Internal_Sym *sym;
9073 bfd_boolean local_toc_syms = FALSE;
9075 /* Shuffle the toc contents, and at the same time convert the
9076 skip array from booleans into offsets. */
9077 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9080 elf_section_data (toc)->this_hdr.contents = contents;
9082 for (src = contents, off = 0, drop = skip;
9083 src < contents + toc->size;
9086 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9091 memcpy (src - off, src, 8);
9095 toc->rawsize = toc->size;
9096 toc->size = src - contents - off;
9098 /* Adjust addends for relocs against the toc section sym,
9099 and optimize any accesses we can. */
9100 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9102 if (sec->reloc_count == 0
9103 || discarded_section (sec))
9106 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9108 if (relstart == NULL)
9111 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9113 enum elf_ppc64_reloc_type r_type;
9114 unsigned long r_symndx;
9116 struct elf_link_hash_entry *h;
9119 r_type = ELF64_R_TYPE (rel->r_info);
9126 case R_PPC64_TOC16_LO:
9127 case R_PPC64_TOC16_HI:
9128 case R_PPC64_TOC16_HA:
9129 case R_PPC64_TOC16_DS:
9130 case R_PPC64_TOC16_LO_DS:
9131 case R_PPC64_ADDR64:
9135 r_symndx = ELF64_R_SYM (rel->r_info);
9136 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9144 val = h->root.u.def.value;
9147 val = sym->st_value;
9149 local_toc_syms = TRUE;
9152 val += rel->r_addend;
9154 if (val > toc->rawsize)
9156 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9158 else if ((skip[val >> 3] & can_optimize) != 0)
9160 Elf_Internal_Rela *tocrel
9161 = toc_relocs + (skip[val >> 3] >> 2);
9162 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9166 case R_PPC64_TOC16_HA:
9167 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9170 case R_PPC64_TOC16_LO_DS:
9171 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9175 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9177 info->callbacks->einfo
9178 (_("%P: %H: %s references "
9179 "optimized away TOC entry\n"),
9180 ibfd, sec, rel->r_offset,
9181 ppc64_elf_howto_table[r_type]->name);
9182 bfd_set_error (bfd_error_bad_value);
9185 rel->r_addend = tocrel->r_addend;
9186 elf_section_data (sec)->relocs = relstart;
9190 if (h != NULL || sym->st_value != 0)
9193 rel->r_addend -= skip[val >> 3];
9194 elf_section_data (sec)->relocs = relstart;
9197 if (elf_section_data (sec)->relocs != relstart)
9201 /* We shouldn't have local or global symbols defined in the TOC,
9202 but handle them anyway. */
9203 if (local_syms != NULL)
9204 for (sym = local_syms;
9205 sym < local_syms + symtab_hdr->sh_info;
9207 if (sym->st_value != 0
9208 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9212 if (sym->st_value > toc->rawsize)
9213 i = toc->rawsize >> 3;
9215 i = sym->st_value >> 3;
9217 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9220 (*_bfd_error_handler)
9221 (_("%s defined on removed toc entry"),
9222 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9225 while ((skip[i] & (ref_from_discarded | can_optimize)));
9226 sym->st_value = (bfd_vma) i << 3;
9229 sym->st_value -= skip[i];
9230 symtab_hdr->contents = (unsigned char *) local_syms;
9233 /* Adjust any global syms defined in this toc input section. */
9234 if (toc_inf.global_toc_syms)
9237 toc_inf.skip = skip;
9238 toc_inf.global_toc_syms = FALSE;
9239 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9243 if (toc->reloc_count != 0)
9245 Elf_Internal_Shdr *rel_hdr;
9246 Elf_Internal_Rela *wrel;
9249 /* Remove unused toc relocs, and adjust those we keep. */
9250 if (toc_relocs == NULL)
9251 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9253 if (toc_relocs == NULL)
9257 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9258 if ((skip[rel->r_offset >> 3]
9259 & (ref_from_discarded | can_optimize)) == 0)
9261 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9262 wrel->r_info = rel->r_info;
9263 wrel->r_addend = rel->r_addend;
9266 else if (!dec_dynrel_count (rel->r_info, toc, info,
9267 &local_syms, NULL, NULL))
9270 elf_section_data (toc)->relocs = toc_relocs;
9271 toc->reloc_count = wrel - toc_relocs;
9272 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9273 sz = rel_hdr->sh_entsize;
9274 rel_hdr->sh_size = toc->reloc_count * sz;
9277 else if (toc_relocs != NULL
9278 && elf_section_data (toc)->relocs != toc_relocs)
9281 if (local_syms != NULL
9282 && symtab_hdr->contents != (unsigned char *) local_syms)
9284 if (!info->keep_memory)
9287 symtab_hdr->contents = (unsigned char *) local_syms;
9295 /* Return true iff input section I references the TOC using
9296 instructions limited to +/-32k offsets. */
9299 ppc64_elf_has_small_toc_reloc (asection *i)
9301 return (is_ppc64_elf (i->owner)
9302 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9305 /* Allocate space for one GOT entry. */
9308 allocate_got (struct elf_link_hash_entry *h,
9309 struct bfd_link_info *info,
9310 struct got_entry *gent)
9312 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9314 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9315 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9317 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9318 ? 2 : 1) * sizeof (Elf64_External_Rela);
9319 asection *got = ppc64_elf_tdata (gent->owner)->got;
9321 gent->got.offset = got->size;
9322 got->size += entsize;
9324 dyn = htab->elf.dynamic_sections_created;
9325 if (h->type == STT_GNU_IFUNC)
9327 htab->elf.irelplt->size += rentsize;
9328 htab->got_reli_size += rentsize;
9330 else if ((info->shared
9331 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9332 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9333 || h->root.type != bfd_link_hash_undefweak))
9335 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9336 relgot->size += rentsize;
9340 /* This function merges got entries in the same toc group. */
9343 merge_got_entries (struct got_entry **pent)
9345 struct got_entry *ent, *ent2;
9347 for (ent = *pent; ent != NULL; ent = ent->next)
9348 if (!ent->is_indirect)
9349 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9350 if (!ent2->is_indirect
9351 && ent2->addend == ent->addend
9352 && ent2->tls_type == ent->tls_type
9353 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9355 ent2->is_indirect = TRUE;
9356 ent2->got.ent = ent;
9360 /* Allocate space in .plt, .got and associated reloc sections for
9364 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9366 struct bfd_link_info *info;
9367 struct ppc_link_hash_table *htab;
9369 struct ppc_link_hash_entry *eh;
9370 struct elf_dyn_relocs *p;
9371 struct got_entry **pgent, *gent;
9373 if (h->root.type == bfd_link_hash_indirect)
9376 info = (struct bfd_link_info *) inf;
9377 htab = ppc_hash_table (info);
9381 if ((htab->elf.dynamic_sections_created
9383 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9384 || h->type == STT_GNU_IFUNC)
9386 struct plt_entry *pent;
9387 bfd_boolean doneone = FALSE;
9388 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9389 if (pent->plt.refcount > 0)
9391 if (!htab->elf.dynamic_sections_created
9392 || h->dynindx == -1)
9395 pent->plt.offset = s->size;
9396 s->size += PLT_ENTRY_SIZE (htab);
9397 s = htab->elf.irelplt;
9401 /* If this is the first .plt entry, make room for the special
9405 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9407 pent->plt.offset = s->size;
9409 /* Make room for this entry. */
9410 s->size += PLT_ENTRY_SIZE (htab);
9412 /* Make room for the .glink code. */
9415 s->size += GLINK_CALL_STUB_SIZE;
9418 /* We need bigger stubs past index 32767. */
9419 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9426 /* We also need to make an entry in the .rela.plt section. */
9427 s = htab->elf.srelplt;
9429 s->size += sizeof (Elf64_External_Rela);
9433 pent->plt.offset = (bfd_vma) -1;
9436 h->plt.plist = NULL;
9442 h->plt.plist = NULL;
9446 eh = (struct ppc_link_hash_entry *) h;
9447 /* Run through the TLS GD got entries first if we're changing them
9449 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9450 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9451 if (gent->got.refcount > 0
9452 && (gent->tls_type & TLS_GD) != 0)
9454 /* This was a GD entry that has been converted to TPREL. If
9455 there happens to be a TPREL entry we can use that one. */
9456 struct got_entry *ent;
9457 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9458 if (ent->got.refcount > 0
9459 && (ent->tls_type & TLS_TPREL) != 0
9460 && ent->addend == gent->addend
9461 && ent->owner == gent->owner)
9463 gent->got.refcount = 0;
9467 /* If not, then we'll be using our own TPREL entry. */
9468 if (gent->got.refcount != 0)
9469 gent->tls_type = TLS_TLS | TLS_TPREL;
9472 /* Remove any list entry that won't generate a word in the GOT before
9473 we call merge_got_entries. Otherwise we risk merging to empty
9475 pgent = &h->got.glist;
9476 while ((gent = *pgent) != NULL)
9477 if (gent->got.refcount > 0)
9479 if ((gent->tls_type & TLS_LD) != 0
9482 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9483 *pgent = gent->next;
9486 pgent = &gent->next;
9489 *pgent = gent->next;
9491 if (!htab->do_multi_toc)
9492 merge_got_entries (&h->got.glist);
9494 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9495 if (!gent->is_indirect)
9497 /* Make sure this symbol is output as a dynamic symbol.
9498 Undefined weak syms won't yet be marked as dynamic,
9499 nor will all TLS symbols. */
9500 if (h->dynindx == -1
9502 && h->type != STT_GNU_IFUNC
9503 && htab->elf.dynamic_sections_created)
9505 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9509 if (!is_ppc64_elf (gent->owner))
9512 allocate_got (h, info, gent);
9515 if (eh->dyn_relocs == NULL
9516 || (!htab->elf.dynamic_sections_created
9517 && h->type != STT_GNU_IFUNC))
9520 /* In the shared -Bsymbolic case, discard space allocated for
9521 dynamic pc-relative relocs against symbols which turn out to be
9522 defined in regular objects. For the normal shared case, discard
9523 space for relocs that have become local due to symbol visibility
9528 /* Relocs that use pc_count are those that appear on a call insn,
9529 or certain REL relocs (see must_be_dyn_reloc) that can be
9530 generated via assembly. We want calls to protected symbols to
9531 resolve directly to the function rather than going via the plt.
9532 If people want function pointer comparisons to work as expected
9533 then they should avoid writing weird assembly. */
9534 if (SYMBOL_CALLS_LOCAL (info, h))
9536 struct elf_dyn_relocs **pp;
9538 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9540 p->count -= p->pc_count;
9549 /* Also discard relocs on undefined weak syms with non-default
9551 if (eh->dyn_relocs != NULL
9552 && h->root.type == bfd_link_hash_undefweak)
9554 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9555 eh->dyn_relocs = NULL;
9557 /* Make sure this symbol is output as a dynamic symbol.
9558 Undefined weak syms won't yet be marked as dynamic. */
9559 else if (h->dynindx == -1
9560 && !h->forced_local)
9562 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9567 else if (h->type == STT_GNU_IFUNC)
9569 if (!h->non_got_ref)
9570 eh->dyn_relocs = NULL;
9572 else if (ELIMINATE_COPY_RELOCS)
9574 /* For the non-shared case, discard space for relocs against
9575 symbols which turn out to need copy relocs or are not
9581 /* Make sure this symbol is output as a dynamic symbol.
9582 Undefined weak syms won't yet be marked as dynamic. */
9583 if (h->dynindx == -1
9584 && !h->forced_local)
9586 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9590 /* If that succeeded, we know we'll be keeping all the
9592 if (h->dynindx != -1)
9596 eh->dyn_relocs = NULL;
9601 /* Finally, allocate space. */
9602 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9604 asection *sreloc = elf_section_data (p->sec)->sreloc;
9605 if (eh->elf.type == STT_GNU_IFUNC)
9606 sreloc = htab->elf.irelplt;
9607 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9613 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9614 to set up space for global entry stubs. These are put in glink,
9615 after the branch table. */
9618 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9620 struct bfd_link_info *info;
9621 struct ppc_link_hash_table *htab;
9622 struct plt_entry *pent;
9625 if (h->root.type == bfd_link_hash_indirect)
9628 if (!h->pointer_equality_needed)
9635 htab = ppc_hash_table (info);
9640 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9641 if (pent->plt.offset != (bfd_vma) -1
9642 && pent->addend == 0)
9644 /* For ELFv2, if this symbol is not defined in a regular file
9645 and we are not generating a shared library or pie, then we
9646 need to define the symbol in the executable on a call stub.
9647 This is to avoid text relocations. */
9648 s->size = (s->size + 15) & -16;
9649 h->root.u.def.section = s;
9650 h->root.u.def.value = s->size;
9657 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9658 read-only sections. */
9661 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9663 if (h->root.type == bfd_link_hash_indirect)
9666 if (readonly_dynrelocs (h))
9668 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9670 /* Not an error, just cut short the traversal. */
9676 /* Set the sizes of the dynamic sections. */
9679 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9680 struct bfd_link_info *info)
9682 struct ppc_link_hash_table *htab;
9687 struct got_entry *first_tlsld;
9689 htab = ppc_hash_table (info);
9693 dynobj = htab->elf.dynobj;
9697 if (htab->elf.dynamic_sections_created)
9699 /* Set the contents of the .interp section to the interpreter. */
9700 if (info->executable)
9702 s = bfd_get_linker_section (dynobj, ".interp");
9705 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9706 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9710 /* Set up .got offsets for local syms, and space for local dynamic
9712 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9714 struct got_entry **lgot_ents;
9715 struct got_entry **end_lgot_ents;
9716 struct plt_entry **local_plt;
9717 struct plt_entry **end_local_plt;
9718 unsigned char *lgot_masks;
9719 bfd_size_type locsymcount;
9720 Elf_Internal_Shdr *symtab_hdr;
9722 if (!is_ppc64_elf (ibfd))
9725 for (s = ibfd->sections; s != NULL; s = s->next)
9727 struct ppc_dyn_relocs *p;
9729 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9731 if (!bfd_is_abs_section (p->sec)
9732 && bfd_is_abs_section (p->sec->output_section))
9734 /* Input section has been discarded, either because
9735 it is a copy of a linkonce section or due to
9736 linker script /DISCARD/, so we'll be discarding
9739 else if (p->count != 0)
9741 asection *srel = elf_section_data (p->sec)->sreloc;
9743 srel = htab->elf.irelplt;
9744 srel->size += p->count * sizeof (Elf64_External_Rela);
9745 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9746 info->flags |= DF_TEXTREL;
9751 lgot_ents = elf_local_got_ents (ibfd);
9755 symtab_hdr = &elf_symtab_hdr (ibfd);
9756 locsymcount = symtab_hdr->sh_info;
9757 end_lgot_ents = lgot_ents + locsymcount;
9758 local_plt = (struct plt_entry **) end_lgot_ents;
9759 end_local_plt = local_plt + locsymcount;
9760 lgot_masks = (unsigned char *) end_local_plt;
9761 s = ppc64_elf_tdata (ibfd)->got;
9762 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9764 struct got_entry **pent, *ent;
9767 while ((ent = *pent) != NULL)
9768 if (ent->got.refcount > 0)
9770 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9772 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9777 unsigned int ent_size = 8;
9778 unsigned int rel_size = sizeof (Elf64_External_Rela);
9780 ent->got.offset = s->size;
9781 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9786 s->size += ent_size;
9787 if ((*lgot_masks & PLT_IFUNC) != 0)
9789 htab->elf.irelplt->size += rel_size;
9790 htab->got_reli_size += rel_size;
9792 else if (info->shared)
9794 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9795 srel->size += rel_size;
9804 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9805 for (; local_plt < end_local_plt; ++local_plt)
9807 struct plt_entry *ent;
9809 for (ent = *local_plt; ent != NULL; ent = ent->next)
9810 if (ent->plt.refcount > 0)
9813 ent->plt.offset = s->size;
9814 s->size += PLT_ENTRY_SIZE (htab);
9816 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9819 ent->plt.offset = (bfd_vma) -1;
9823 /* Allocate global sym .plt and .got entries, and space for global
9824 sym dynamic relocs. */
9825 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9826 /* Stash the end of glink branch table. */
9827 if (htab->glink != NULL)
9828 htab->glink->rawsize = htab->glink->size;
9830 if (!htab->opd_abi && !info->shared)
9831 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9834 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9836 struct got_entry *ent;
9838 if (!is_ppc64_elf (ibfd))
9841 ent = ppc64_tlsld_got (ibfd);
9842 if (ent->got.refcount > 0)
9844 if (!htab->do_multi_toc && first_tlsld != NULL)
9846 ent->is_indirect = TRUE;
9847 ent->got.ent = first_tlsld;
9851 if (first_tlsld == NULL)
9853 s = ppc64_elf_tdata (ibfd)->got;
9854 ent->got.offset = s->size;
9859 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9860 srel->size += sizeof (Elf64_External_Rela);
9865 ent->got.offset = (bfd_vma) -1;
9868 /* We now have determined the sizes of the various dynamic sections.
9869 Allocate memory for them. */
9871 for (s = dynobj->sections; s != NULL; s = s->next)
9873 if ((s->flags & SEC_LINKER_CREATED) == 0)
9876 if (s == htab->brlt || s == htab->relbrlt)
9877 /* These haven't been allocated yet; don't strip. */
9879 else if (s == htab->elf.sgot
9880 || s == htab->elf.splt
9881 || s == htab->elf.iplt
9883 || s == htab->dynbss)
9885 /* Strip this section if we don't need it; see the
9888 else if (s == htab->glink_eh_frame)
9890 if (!bfd_is_abs_section (s->output_section))
9891 /* Not sized yet. */
9894 else if (CONST_STRNEQ (s->name, ".rela"))
9898 if (s != htab->elf.srelplt)
9901 /* We use the reloc_count field as a counter if we need
9902 to copy relocs into the output file. */
9908 /* It's not one of our sections, so don't allocate space. */
9914 /* If we don't need this section, strip it from the
9915 output file. This is mostly to handle .rela.bss and
9916 .rela.plt. We must create both sections in
9917 create_dynamic_sections, because they must be created
9918 before the linker maps input sections to output
9919 sections. The linker does that before
9920 adjust_dynamic_symbol is called, and it is that
9921 function which decides whether anything needs to go
9922 into these sections. */
9923 s->flags |= SEC_EXCLUDE;
9927 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9930 /* Allocate memory for the section contents. We use bfd_zalloc
9931 here in case unused entries are not reclaimed before the
9932 section's contents are written out. This should not happen,
9933 but this way if it does we get a R_PPC64_NONE reloc in .rela
9934 sections instead of garbage.
9935 We also rely on the section contents being zero when writing
9937 s->contents = bfd_zalloc (dynobj, s->size);
9938 if (s->contents == NULL)
9942 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9944 if (!is_ppc64_elf (ibfd))
9947 s = ppc64_elf_tdata (ibfd)->got;
9948 if (s != NULL && s != htab->elf.sgot)
9951 s->flags |= SEC_EXCLUDE;
9954 s->contents = bfd_zalloc (ibfd, s->size);
9955 if (s->contents == NULL)
9959 s = ppc64_elf_tdata (ibfd)->relgot;
9963 s->flags |= SEC_EXCLUDE;
9966 s->contents = bfd_zalloc (ibfd, s->size);
9967 if (s->contents == NULL)
9975 if (htab->elf.dynamic_sections_created)
9977 bfd_boolean tls_opt;
9979 /* Add some entries to the .dynamic section. We fill in the
9980 values later, in ppc64_elf_finish_dynamic_sections, but we
9981 must add the entries now so that we get the correct size for
9982 the .dynamic section. The DT_DEBUG entry is filled in by the
9983 dynamic linker and used by the debugger. */
9984 #define add_dynamic_entry(TAG, VAL) \
9985 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9987 if (info->executable)
9989 if (!add_dynamic_entry (DT_DEBUG, 0))
9993 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9995 if (!add_dynamic_entry (DT_PLTGOT, 0)
9996 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9997 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9998 || !add_dynamic_entry (DT_JMPREL, 0)
9999 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10003 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10005 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10006 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10010 tls_opt = (!htab->params->no_tls_get_addr_opt
10011 && htab->tls_get_addr_fd != NULL
10012 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10013 if (tls_opt || !htab->opd_abi)
10015 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10021 if (!add_dynamic_entry (DT_RELA, 0)
10022 || !add_dynamic_entry (DT_RELASZ, 0)
10023 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10026 /* If any dynamic relocs apply to a read-only section,
10027 then we need a DT_TEXTREL entry. */
10028 if ((info->flags & DF_TEXTREL) == 0)
10029 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10031 if ((info->flags & DF_TEXTREL) != 0)
10033 if (!add_dynamic_entry (DT_TEXTREL, 0))
10038 #undef add_dynamic_entry
10043 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10046 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10048 if (h->plt.plist != NULL
10050 && !h->pointer_equality_needed)
10053 return _bfd_elf_hash_symbol (h);
10056 /* Determine the type of stub needed, if any, for a call. */
10058 static inline enum ppc_stub_type
10059 ppc_type_of_stub (asection *input_sec,
10060 const Elf_Internal_Rela *rel,
10061 struct ppc_link_hash_entry **hash,
10062 struct plt_entry **plt_ent,
10063 bfd_vma destination,
10064 unsigned long local_off)
10066 struct ppc_link_hash_entry *h = *hash;
10068 bfd_vma branch_offset;
10069 bfd_vma max_branch_offset;
10070 enum elf_ppc64_reloc_type r_type;
10074 struct plt_entry *ent;
10075 struct ppc_link_hash_entry *fdh = h;
10077 && h->oh->is_func_descriptor)
10079 fdh = ppc_follow_link (h->oh);
10083 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10084 if (ent->addend == rel->r_addend
10085 && ent->plt.offset != (bfd_vma) -1)
10088 return ppc_stub_plt_call;
10091 /* Here, we know we don't have a plt entry. If we don't have a
10092 either a defined function descriptor or a defined entry symbol
10093 in a regular object file, then it is pointless trying to make
10094 any other type of stub. */
10095 if (!is_static_defined (&fdh->elf)
10096 && !is_static_defined (&h->elf))
10097 return ppc_stub_none;
10099 else if (elf_local_got_ents (input_sec->owner) != NULL)
10101 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10102 struct plt_entry **local_plt = (struct plt_entry **)
10103 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10104 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10106 if (local_plt[r_symndx] != NULL)
10108 struct plt_entry *ent;
10110 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10111 if (ent->addend == rel->r_addend
10112 && ent->plt.offset != (bfd_vma) -1)
10115 return ppc_stub_plt_call;
10120 /* Determine where the call point is. */
10121 location = (input_sec->output_offset
10122 + input_sec->output_section->vma
10125 branch_offset = destination - location;
10126 r_type = ELF64_R_TYPE (rel->r_info);
10128 /* Determine if a long branch stub is needed. */
10129 max_branch_offset = 1 << 25;
10130 if (r_type != R_PPC64_REL24)
10131 max_branch_offset = 1 << 15;
10133 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10134 /* We need a stub. Figure out whether a long_branch or plt_branch
10135 is needed later. */
10136 return ppc_stub_long_branch;
10138 return ppc_stub_none;
10141 /* With power7 weakly ordered memory model, it is possible for ld.so
10142 to update a plt entry in one thread and have another thread see a
10143 stale zero toc entry. To avoid this we need some sort of acquire
10144 barrier in the call stub. One solution is to make the load of the
10145 toc word seem to appear to depend on the load of the function entry
10146 word. Another solution is to test for r2 being zero, and branch to
10147 the appropriate glink entry if so.
10149 . fake dep barrier compare
10150 . ld 12,xxx(2) ld 12,xxx(2)
10151 . mtctr 12 mtctr 12
10152 . xor 11,12,12 ld 2,xxx+8(2)
10153 . add 2,2,11 cmpldi 2,0
10154 . ld 2,xxx+8(2) bnectr+
10155 . bctr b <glink_entry>
10157 The solution involving the compare turns out to be faster, so
10158 that's what we use unless the branch won't reach. */
10160 #define ALWAYS_USE_FAKE_DEP 0
10161 #define ALWAYS_EMIT_R2SAVE 0
10163 #define PPC_LO(v) ((v) & 0xffff)
10164 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10165 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10167 static inline unsigned int
10168 plt_stub_size (struct ppc_link_hash_table *htab,
10169 struct ppc_stub_hash_entry *stub_entry,
10172 unsigned size = 12;
10174 if (ALWAYS_EMIT_R2SAVE
10175 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10177 if (PPC_HA (off) != 0)
10182 if (htab->params->plt_static_chain)
10184 if (htab->params->plt_thread_safe)
10186 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10189 if (stub_entry->h != NULL
10190 && (stub_entry->h == htab->tls_get_addr_fd
10191 || stub_entry->h == htab->tls_get_addr)
10192 && !htab->params->no_tls_get_addr_opt)
10197 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10198 then return the padding needed to do so. */
10199 static inline unsigned int
10200 plt_stub_pad (struct ppc_link_hash_table *htab,
10201 struct ppc_stub_hash_entry *stub_entry,
10204 int stub_align = 1 << htab->params->plt_stub_align;
10205 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10206 bfd_vma stub_off = stub_entry->stub_sec->size;
10208 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10209 > (stub_size & -stub_align))
10210 return stub_align - (stub_off & (stub_align - 1));
10214 /* Build a .plt call stub. */
10216 static inline bfd_byte *
10217 build_plt_stub (struct ppc_link_hash_table *htab,
10218 struct ppc_stub_hash_entry *stub_entry,
10219 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10221 bfd *obfd = htab->params->stub_bfd;
10222 bfd_boolean plt_load_toc = htab->opd_abi;
10223 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10224 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10225 bfd_boolean use_fake_dep = plt_thread_safe;
10226 bfd_vma cmp_branch_off = 0;
10228 if (!ALWAYS_USE_FAKE_DEP
10231 && !(stub_entry->h != NULL
10232 && (stub_entry->h == htab->tls_get_addr_fd
10233 || stub_entry->h == htab->tls_get_addr)
10234 && !htab->params->no_tls_get_addr_opt))
10236 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10237 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10238 / PLT_ENTRY_SIZE (htab));
10239 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10242 if (pltindex > 32768)
10243 glinkoff += (pltindex - 32768) * 4;
10245 + htab->glink->output_offset
10246 + htab->glink->output_section->vma);
10247 from = (p - stub_entry->stub_sec->contents
10248 + 4 * (ALWAYS_EMIT_R2SAVE
10249 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10250 + 4 * (PPC_HA (offset) != 0)
10251 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10252 != PPC_HA (offset))
10253 + 4 * (plt_static_chain != 0)
10255 + stub_entry->stub_sec->output_offset
10256 + stub_entry->stub_sec->output_section->vma);
10257 cmp_branch_off = to - from;
10258 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10261 if (PPC_HA (offset) != 0)
10265 if (ALWAYS_EMIT_R2SAVE
10266 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10267 r[0].r_offset += 4;
10268 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10269 r[1].r_offset = r[0].r_offset + 4;
10270 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10271 r[1].r_addend = r[0].r_addend;
10274 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10276 r[2].r_offset = r[1].r_offset + 4;
10277 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10278 r[2].r_addend = r[0].r_addend;
10282 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10283 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10284 r[2].r_addend = r[0].r_addend + 8;
10285 if (plt_static_chain)
10287 r[3].r_offset = r[2].r_offset + 4;
10288 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10289 r[3].r_addend = r[0].r_addend + 16;
10294 if (ALWAYS_EMIT_R2SAVE
10295 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10296 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10299 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10300 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10304 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10305 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10308 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10310 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10313 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10318 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10319 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10321 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10322 if (plt_static_chain)
10323 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10330 if (ALWAYS_EMIT_R2SAVE
10331 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10332 r[0].r_offset += 4;
10333 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10336 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10338 r[1].r_offset = r[0].r_offset + 4;
10339 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10340 r[1].r_addend = r[0].r_addend;
10344 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10345 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10346 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10347 if (plt_static_chain)
10349 r[2].r_offset = r[1].r_offset + 4;
10350 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10351 r[2].r_addend = r[0].r_addend + 8;
10356 if (ALWAYS_EMIT_R2SAVE
10357 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10358 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10359 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10361 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10363 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10366 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10371 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10372 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10374 if (plt_static_chain)
10375 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10376 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10379 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10381 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10382 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10383 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10386 bfd_put_32 (obfd, BCTR, p), p += 4;
10390 /* Build a special .plt call stub for __tls_get_addr. */
10392 #define LD_R11_0R3 0xe9630000
10393 #define LD_R12_0R3 0xe9830000
10394 #define MR_R0_R3 0x7c601b78
10395 #define CMPDI_R11_0 0x2c2b0000
10396 #define ADD_R3_R12_R13 0x7c6c6a14
10397 #define BEQLR 0x4d820020
10398 #define MR_R3_R0 0x7c030378
10399 #define STD_R11_0R1 0xf9610000
10400 #define BCTRL 0x4e800421
10401 #define LD_R11_0R1 0xe9610000
10402 #define MTLR_R11 0x7d6803a6
10404 static inline bfd_byte *
10405 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10406 struct ppc_stub_hash_entry *stub_entry,
10407 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10409 bfd *obfd = htab->params->stub_bfd;
10411 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10412 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10413 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10414 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10415 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10416 bfd_put_32 (obfd, BEQLR, p), p += 4;
10417 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10418 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10419 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10422 r[0].r_offset += 9 * 4;
10423 p = build_plt_stub (htab, stub_entry, p, offset, r);
10424 bfd_put_32 (obfd, BCTRL, p - 4);
10426 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10427 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10428 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10429 bfd_put_32 (obfd, BLR, p), p += 4;
10434 static Elf_Internal_Rela *
10435 get_relocs (asection *sec, int count)
10437 Elf_Internal_Rela *relocs;
10438 struct bfd_elf_section_data *elfsec_data;
10440 elfsec_data = elf_section_data (sec);
10441 relocs = elfsec_data->relocs;
10442 if (relocs == NULL)
10444 bfd_size_type relsize;
10445 relsize = sec->reloc_count * sizeof (*relocs);
10446 relocs = bfd_alloc (sec->owner, relsize);
10447 if (relocs == NULL)
10449 elfsec_data->relocs = relocs;
10450 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10451 sizeof (Elf_Internal_Shdr));
10452 if (elfsec_data->rela.hdr == NULL)
10454 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10455 * sizeof (Elf64_External_Rela));
10456 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10457 sec->reloc_count = 0;
10459 relocs += sec->reloc_count;
10460 sec->reloc_count += count;
10465 get_r2off (struct bfd_link_info *info,
10466 struct ppc_stub_hash_entry *stub_entry)
10468 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10469 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10473 /* Support linking -R objects. Get the toc pointer from the
10476 if (!htab->opd_abi)
10478 asection *opd = stub_entry->h->elf.root.u.def.section;
10479 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10481 if (strcmp (opd->name, ".opd") != 0
10482 || opd->reloc_count != 0)
10484 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10485 stub_entry->h->elf.root.root.string);
10486 bfd_set_error (bfd_error_bad_value);
10489 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10491 r2off = bfd_get_64 (opd->owner, buf);
10492 r2off -= elf_gp (info->output_bfd);
10494 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10499 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10501 struct ppc_stub_hash_entry *stub_entry;
10502 struct ppc_branch_hash_entry *br_entry;
10503 struct bfd_link_info *info;
10504 struct ppc_link_hash_table *htab;
10509 Elf_Internal_Rela *r;
10512 /* Massage our args to the form they really have. */
10513 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10516 htab = ppc_hash_table (info);
10520 /* Make a note of the offset within the stubs for this entry. */
10521 stub_entry->stub_offset = stub_entry->stub_sec->size;
10522 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10524 htab->stub_count[stub_entry->stub_type - 1] += 1;
10525 switch (stub_entry->stub_type)
10527 case ppc_stub_long_branch:
10528 case ppc_stub_long_branch_r2off:
10529 /* Branches are relative. This is where we are going to. */
10530 dest = (stub_entry->target_value
10531 + stub_entry->target_section->output_offset
10532 + stub_entry->target_section->output_section->vma);
10533 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10536 /* And this is where we are coming from. */
10537 off -= (stub_entry->stub_offset
10538 + stub_entry->stub_sec->output_offset
10539 + stub_entry->stub_sec->output_section->vma);
10542 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10544 bfd_vma r2off = get_r2off (info, stub_entry);
10548 htab->stub_error = TRUE;
10551 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10554 if (PPC_HA (r2off) != 0)
10557 bfd_put_32 (htab->params->stub_bfd,
10558 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10561 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10565 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10567 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10569 info->callbacks->einfo
10570 (_("%P: long branch stub `%s' offset overflow\n"),
10571 stub_entry->root.string);
10572 htab->stub_error = TRUE;
10576 if (info->emitrelocations)
10578 r = get_relocs (stub_entry->stub_sec, 1);
10581 r->r_offset = loc - stub_entry->stub_sec->contents;
10582 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10583 r->r_addend = dest;
10584 if (stub_entry->h != NULL)
10586 struct elf_link_hash_entry **hashes;
10587 unsigned long symndx;
10588 struct ppc_link_hash_entry *h;
10590 hashes = elf_sym_hashes (htab->params->stub_bfd);
10591 if (hashes == NULL)
10593 bfd_size_type hsize;
10595 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10596 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10597 if (hashes == NULL)
10599 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10600 htab->stub_globals = 1;
10602 symndx = htab->stub_globals++;
10604 hashes[symndx] = &h->elf;
10605 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10606 if (h->oh != NULL && h->oh->is_func)
10607 h = ppc_follow_link (h->oh);
10608 if (h->elf.root.u.def.section != stub_entry->target_section)
10609 /* H is an opd symbol. The addend must be zero. */
10613 off = (h->elf.root.u.def.value
10614 + h->elf.root.u.def.section->output_offset
10615 + h->elf.root.u.def.section->output_section->vma);
10616 r->r_addend -= off;
10622 case ppc_stub_plt_branch:
10623 case ppc_stub_plt_branch_r2off:
10624 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10625 stub_entry->root.string + 9,
10627 if (br_entry == NULL)
10629 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10630 stub_entry->root.string);
10631 htab->stub_error = TRUE;
10635 dest = (stub_entry->target_value
10636 + stub_entry->target_section->output_offset
10637 + stub_entry->target_section->output_section->vma);
10638 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10639 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10641 bfd_put_64 (htab->brlt->owner, dest,
10642 htab->brlt->contents + br_entry->offset);
10644 if (br_entry->iter == htab->stub_iteration)
10646 br_entry->iter = 0;
10648 if (htab->relbrlt != NULL)
10650 /* Create a reloc for the branch lookup table entry. */
10651 Elf_Internal_Rela rela;
10654 rela.r_offset = (br_entry->offset
10655 + htab->brlt->output_offset
10656 + htab->brlt->output_section->vma);
10657 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10658 rela.r_addend = dest;
10660 rl = htab->relbrlt->contents;
10661 rl += (htab->relbrlt->reloc_count++
10662 * sizeof (Elf64_External_Rela));
10663 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10665 else if (info->emitrelocations)
10667 r = get_relocs (htab->brlt, 1);
10670 /* brlt, being SEC_LINKER_CREATED does not go through the
10671 normal reloc processing. Symbols and offsets are not
10672 translated from input file to output file form, so
10673 set up the offset per the output file. */
10674 r->r_offset = (br_entry->offset
10675 + htab->brlt->output_offset
10676 + htab->brlt->output_section->vma);
10677 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10678 r->r_addend = dest;
10682 dest = (br_entry->offset
10683 + htab->brlt->output_offset
10684 + htab->brlt->output_section->vma);
10687 - elf_gp (htab->brlt->output_section->owner)
10688 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10690 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10692 info->callbacks->einfo
10693 (_("%P: linkage table error against `%T'\n"),
10694 stub_entry->root.string);
10695 bfd_set_error (bfd_error_bad_value);
10696 htab->stub_error = TRUE;
10700 if (info->emitrelocations)
10702 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10705 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10706 if (bfd_big_endian (info->output_bfd))
10707 r[0].r_offset += 2;
10708 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10709 r[0].r_offset += 4;
10710 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10711 r[0].r_addend = dest;
10712 if (PPC_HA (off) != 0)
10714 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10715 r[1].r_offset = r[0].r_offset + 4;
10716 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10717 r[1].r_addend = r[0].r_addend;
10721 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10723 if (PPC_HA (off) != 0)
10726 bfd_put_32 (htab->params->stub_bfd,
10727 ADDIS_R12_R2 | PPC_HA (off), loc);
10729 bfd_put_32 (htab->params->stub_bfd,
10730 LD_R12_0R12 | PPC_LO (off), loc);
10735 bfd_put_32 (htab->params->stub_bfd,
10736 LD_R12_0R2 | PPC_LO (off), loc);
10741 bfd_vma r2off = get_r2off (info, stub_entry);
10743 if (r2off == 0 && htab->opd_abi)
10745 htab->stub_error = TRUE;
10749 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10752 if (PPC_HA (off) != 0)
10755 bfd_put_32 (htab->params->stub_bfd,
10756 ADDIS_R12_R2 | PPC_HA (off), loc);
10758 bfd_put_32 (htab->params->stub_bfd,
10759 LD_R12_0R12 | PPC_LO (off), loc);
10762 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10764 if (PPC_HA (r2off) != 0)
10768 bfd_put_32 (htab->params->stub_bfd,
10769 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10771 if (PPC_LO (r2off) != 0)
10775 bfd_put_32 (htab->params->stub_bfd,
10776 ADDI_R2_R2 | PPC_LO (r2off), loc);
10780 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10782 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10785 case ppc_stub_plt_call:
10786 case ppc_stub_plt_call_r2save:
10787 if (stub_entry->h != NULL
10788 && stub_entry->h->is_func_descriptor
10789 && stub_entry->h->oh != NULL)
10791 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10793 /* If the old-ABI "dot-symbol" is undefined make it weak so
10794 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10795 FIXME: We used to define the symbol on one of the call
10796 stubs instead, which is why we test symbol section id
10797 against htab->top_id in various places. Likely all
10798 these checks could now disappear. */
10799 if (fh->elf.root.type == bfd_link_hash_undefined)
10800 fh->elf.root.type = bfd_link_hash_undefweak;
10801 /* Stop undo_symbol_twiddle changing it back to undefined. */
10802 fh->was_undefined = 0;
10805 /* Now build the stub. */
10806 dest = stub_entry->plt_ent->plt.offset & ~1;
10807 if (dest >= (bfd_vma) -2)
10810 plt = htab->elf.splt;
10811 if (!htab->elf.dynamic_sections_created
10812 || stub_entry->h == NULL
10813 || stub_entry->h->elf.dynindx == -1)
10814 plt = htab->elf.iplt;
10816 dest += plt->output_offset + plt->output_section->vma;
10818 if (stub_entry->h == NULL
10819 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10821 Elf_Internal_Rela rela;
10824 rela.r_offset = dest;
10826 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10828 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10829 rela.r_addend = (stub_entry->target_value
10830 + stub_entry->target_section->output_offset
10831 + stub_entry->target_section->output_section->vma);
10833 rl = (htab->elf.irelplt->contents
10834 + (htab->elf.irelplt->reloc_count++
10835 * sizeof (Elf64_External_Rela)));
10836 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10837 stub_entry->plt_ent->plt.offset |= 1;
10841 - elf_gp (plt->output_section->owner)
10842 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10844 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10846 info->callbacks->einfo
10847 (_("%P: linkage table error against `%T'\n"),
10848 stub_entry->h != NULL
10849 ? stub_entry->h->elf.root.root.string
10851 bfd_set_error (bfd_error_bad_value);
10852 htab->stub_error = TRUE;
10856 if (htab->params->plt_stub_align != 0)
10858 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10860 stub_entry->stub_sec->size += pad;
10861 stub_entry->stub_offset = stub_entry->stub_sec->size;
10866 if (info->emitrelocations)
10868 r = get_relocs (stub_entry->stub_sec,
10869 ((PPC_HA (off) != 0)
10871 ? 2 + (htab->params->plt_static_chain
10872 && PPC_HA (off + 16) == PPC_HA (off))
10876 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10877 if (bfd_big_endian (info->output_bfd))
10878 r[0].r_offset += 2;
10879 r[0].r_addend = dest;
10881 if (stub_entry->h != NULL
10882 && (stub_entry->h == htab->tls_get_addr_fd
10883 || stub_entry->h == htab->tls_get_addr)
10884 && !htab->params->no_tls_get_addr_opt)
10885 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10887 p = build_plt_stub (htab, stub_entry, loc, off, r);
10896 stub_entry->stub_sec->size += size;
10898 if (htab->params->emit_stub_syms)
10900 struct elf_link_hash_entry *h;
10903 const char *const stub_str[] = { "long_branch",
10904 "long_branch_r2off",
10906 "plt_branch_r2off",
10910 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10911 len2 = strlen (stub_entry->root.string);
10912 name = bfd_malloc (len1 + len2 + 2);
10915 memcpy (name, stub_entry->root.string, 9);
10916 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10917 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10918 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10921 if (h->root.type == bfd_link_hash_new)
10923 h->root.type = bfd_link_hash_defined;
10924 h->root.u.def.section = stub_entry->stub_sec;
10925 h->root.u.def.value = stub_entry->stub_offset;
10926 h->ref_regular = 1;
10927 h->def_regular = 1;
10928 h->ref_regular_nonweak = 1;
10929 h->forced_local = 1;
10937 /* As above, but don't actually build the stub. Just bump offset so
10938 we know stub section sizes, and select plt_branch stubs where
10939 long_branch stubs won't do. */
10942 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10944 struct ppc_stub_hash_entry *stub_entry;
10945 struct bfd_link_info *info;
10946 struct ppc_link_hash_table *htab;
10950 /* Massage our args to the form they really have. */
10951 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10954 htab = ppc_hash_table (info);
10958 if (stub_entry->stub_type == ppc_stub_plt_call
10959 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10962 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10963 if (off >= (bfd_vma) -2)
10965 plt = htab->elf.splt;
10966 if (!htab->elf.dynamic_sections_created
10967 || stub_entry->h == NULL
10968 || stub_entry->h->elf.dynindx == -1)
10969 plt = htab->elf.iplt;
10970 off += (plt->output_offset
10971 + plt->output_section->vma
10972 - elf_gp (plt->output_section->owner)
10973 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10975 size = plt_stub_size (htab, stub_entry, off);
10976 if (htab->params->plt_stub_align)
10977 size += plt_stub_pad (htab, stub_entry, off);
10978 if (info->emitrelocations)
10980 stub_entry->stub_sec->reloc_count
10981 += ((PPC_HA (off) != 0)
10983 ? 2 + (htab->params->plt_static_chain
10984 && PPC_HA (off + 16) == PPC_HA (off))
10986 stub_entry->stub_sec->flags |= SEC_RELOC;
10991 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10994 bfd_vma local_off = 0;
10996 off = (stub_entry->target_value
10997 + stub_entry->target_section->output_offset
10998 + stub_entry->target_section->output_section->vma);
10999 off -= (stub_entry->stub_sec->size
11000 + stub_entry->stub_sec->output_offset
11001 + stub_entry->stub_sec->output_section->vma);
11003 /* Reset the stub type from the plt variant in case we now
11004 can reach with a shorter stub. */
11005 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11006 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11009 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11011 r2off = get_r2off (info, stub_entry);
11012 if (r2off == 0 && htab->opd_abi)
11014 htab->stub_error = TRUE;
11018 if (PPC_HA (r2off) != 0)
11023 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11025 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11026 Do the same for -R objects without function descriptors. */
11027 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11028 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11031 struct ppc_branch_hash_entry *br_entry;
11033 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11034 stub_entry->root.string + 9,
11036 if (br_entry == NULL)
11038 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11039 stub_entry->root.string);
11040 htab->stub_error = TRUE;
11044 if (br_entry->iter != htab->stub_iteration)
11046 br_entry->iter = htab->stub_iteration;
11047 br_entry->offset = htab->brlt->size;
11048 htab->brlt->size += 8;
11050 if (htab->relbrlt != NULL)
11051 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11052 else if (info->emitrelocations)
11054 htab->brlt->reloc_count += 1;
11055 htab->brlt->flags |= SEC_RELOC;
11059 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11060 off = (br_entry->offset
11061 + htab->brlt->output_offset
11062 + htab->brlt->output_section->vma
11063 - elf_gp (htab->brlt->output_section->owner)
11064 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11066 if (info->emitrelocations)
11068 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11069 stub_entry->stub_sec->flags |= SEC_RELOC;
11072 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11075 if (PPC_HA (off) != 0)
11081 if (PPC_HA (off) != 0)
11084 if (PPC_HA (r2off) != 0)
11086 if (PPC_LO (r2off) != 0)
11090 else if (info->emitrelocations)
11092 stub_entry->stub_sec->reloc_count += 1;
11093 stub_entry->stub_sec->flags |= SEC_RELOC;
11097 stub_entry->stub_sec->size += size;
11101 /* Set up various things so that we can make a list of input sections
11102 for each output section included in the link. Returns -1 on error,
11103 0 when no stubs will be needed, and 1 on success. */
11106 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11109 int top_id, top_index, id;
11111 asection **input_list;
11113 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11118 /* Find the top input section id. */
11119 for (input_bfd = info->input_bfds, top_id = 3;
11121 input_bfd = input_bfd->link.next)
11123 for (section = input_bfd->sections;
11125 section = section->next)
11127 if (top_id < section->id)
11128 top_id = section->id;
11132 htab->top_id = top_id;
11133 amt = sizeof (struct map_stub) * (top_id + 1);
11134 htab->stub_group = bfd_zmalloc (amt);
11135 if (htab->stub_group == NULL)
11138 /* Set toc_off for com, und, abs and ind sections. */
11139 for (id = 0; id < 3; id++)
11140 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11142 /* We can't use output_bfd->section_count here to find the top output
11143 section index as some sections may have been removed, and
11144 strip_excluded_output_sections doesn't renumber the indices. */
11145 for (section = info->output_bfd->sections, top_index = 0;
11147 section = section->next)
11149 if (top_index < section->index)
11150 top_index = section->index;
11153 htab->top_index = top_index;
11154 amt = sizeof (asection *) * (top_index + 1);
11155 input_list = bfd_zmalloc (amt);
11156 htab->input_list = input_list;
11157 if (input_list == NULL)
11163 /* Set up for first pass at multitoc partitioning. */
11166 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11168 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11170 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11171 htab->toc_bfd = NULL;
11172 htab->toc_first_sec = NULL;
11175 /* The linker repeatedly calls this function for each TOC input section
11176 and linker generated GOT section. Group input bfds such that the toc
11177 within a group is less than 64k in size. */
11180 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11182 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11183 bfd_vma addr, off, limit;
11188 if (!htab->second_toc_pass)
11190 /* Keep track of the first .toc or .got section for this input bfd. */
11191 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11195 htab->toc_bfd = isec->owner;
11196 htab->toc_first_sec = isec;
11199 addr = isec->output_offset + isec->output_section->vma;
11200 off = addr - htab->toc_curr;
11201 limit = 0x80008000;
11202 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11204 if (off + isec->size > limit)
11206 addr = (htab->toc_first_sec->output_offset
11207 + htab->toc_first_sec->output_section->vma);
11208 htab->toc_curr = addr;
11211 /* toc_curr is the base address of this toc group. Set elf_gp
11212 for the input section to be the offset relative to the
11213 output toc base plus 0x8000. Making the input elf_gp an
11214 offset allows us to move the toc as a whole without
11215 recalculating input elf_gp. */
11216 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11217 off += TOC_BASE_OFF;
11219 /* Die if someone uses a linker script that doesn't keep input
11220 file .toc and .got together. */
11222 && elf_gp (isec->owner) != 0
11223 && elf_gp (isec->owner) != off)
11226 elf_gp (isec->owner) = off;
11230 /* During the second pass toc_first_sec points to the start of
11231 a toc group, and toc_curr is used to track the old elf_gp.
11232 We use toc_bfd to ensure we only look at each bfd once. */
11233 if (htab->toc_bfd == isec->owner)
11235 htab->toc_bfd = isec->owner;
11237 if (htab->toc_first_sec == NULL
11238 || htab->toc_curr != elf_gp (isec->owner))
11240 htab->toc_curr = elf_gp (isec->owner);
11241 htab->toc_first_sec = isec;
11243 addr = (htab->toc_first_sec->output_offset
11244 + htab->toc_first_sec->output_section->vma);
11245 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11246 elf_gp (isec->owner) = off;
11251 /* Called via elf_link_hash_traverse to merge GOT entries for global
11255 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11257 if (h->root.type == bfd_link_hash_indirect)
11260 merge_got_entries (&h->got.glist);
11265 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11269 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11271 struct got_entry *gent;
11273 if (h->root.type == bfd_link_hash_indirect)
11276 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11277 if (!gent->is_indirect)
11278 allocate_got (h, (struct bfd_link_info *) inf, gent);
11282 /* Called on the first multitoc pass after the last call to
11283 ppc64_elf_next_toc_section. This function removes duplicate GOT
11287 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11289 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11290 struct bfd *ibfd, *ibfd2;
11291 bfd_boolean done_something;
11293 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11295 if (!htab->do_multi_toc)
11298 /* Merge global sym got entries within a toc group. */
11299 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11301 /* And tlsld_got. */
11302 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11304 struct got_entry *ent, *ent2;
11306 if (!is_ppc64_elf (ibfd))
11309 ent = ppc64_tlsld_got (ibfd);
11310 if (!ent->is_indirect
11311 && ent->got.offset != (bfd_vma) -1)
11313 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11315 if (!is_ppc64_elf (ibfd2))
11318 ent2 = ppc64_tlsld_got (ibfd2);
11319 if (!ent2->is_indirect
11320 && ent2->got.offset != (bfd_vma) -1
11321 && elf_gp (ibfd2) == elf_gp (ibfd))
11323 ent2->is_indirect = TRUE;
11324 ent2->got.ent = ent;
11330 /* Zap sizes of got sections. */
11331 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11332 htab->elf.irelplt->size -= htab->got_reli_size;
11333 htab->got_reli_size = 0;
11335 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11337 asection *got, *relgot;
11339 if (!is_ppc64_elf (ibfd))
11342 got = ppc64_elf_tdata (ibfd)->got;
11345 got->rawsize = got->size;
11347 relgot = ppc64_elf_tdata (ibfd)->relgot;
11348 relgot->rawsize = relgot->size;
11353 /* Now reallocate the got, local syms first. We don't need to
11354 allocate section contents again since we never increase size. */
11355 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11357 struct got_entry **lgot_ents;
11358 struct got_entry **end_lgot_ents;
11359 struct plt_entry **local_plt;
11360 struct plt_entry **end_local_plt;
11361 unsigned char *lgot_masks;
11362 bfd_size_type locsymcount;
11363 Elf_Internal_Shdr *symtab_hdr;
11366 if (!is_ppc64_elf (ibfd))
11369 lgot_ents = elf_local_got_ents (ibfd);
11373 symtab_hdr = &elf_symtab_hdr (ibfd);
11374 locsymcount = symtab_hdr->sh_info;
11375 end_lgot_ents = lgot_ents + locsymcount;
11376 local_plt = (struct plt_entry **) end_lgot_ents;
11377 end_local_plt = local_plt + locsymcount;
11378 lgot_masks = (unsigned char *) end_local_plt;
11379 s = ppc64_elf_tdata (ibfd)->got;
11380 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11382 struct got_entry *ent;
11384 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11386 unsigned int ent_size = 8;
11387 unsigned int rel_size = sizeof (Elf64_External_Rela);
11389 ent->got.offset = s->size;
11390 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11395 s->size += ent_size;
11396 if ((*lgot_masks & PLT_IFUNC) != 0)
11398 htab->elf.irelplt->size += rel_size;
11399 htab->got_reli_size += rel_size;
11401 else if (info->shared)
11403 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11404 srel->size += rel_size;
11410 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11412 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11414 struct got_entry *ent;
11416 if (!is_ppc64_elf (ibfd))
11419 ent = ppc64_tlsld_got (ibfd);
11420 if (!ent->is_indirect
11421 && ent->got.offset != (bfd_vma) -1)
11423 asection *s = ppc64_elf_tdata (ibfd)->got;
11424 ent->got.offset = s->size;
11428 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11429 srel->size += sizeof (Elf64_External_Rela);
11434 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11435 if (!done_something)
11436 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11440 if (!is_ppc64_elf (ibfd))
11443 got = ppc64_elf_tdata (ibfd)->got;
11446 done_something = got->rawsize != got->size;
11447 if (done_something)
11452 if (done_something)
11453 (*htab->params->layout_sections_again) ();
11455 /* Set up for second pass over toc sections to recalculate elf_gp
11456 on input sections. */
11457 htab->toc_bfd = NULL;
11458 htab->toc_first_sec = NULL;
11459 htab->second_toc_pass = TRUE;
11460 return done_something;
11463 /* Called after second pass of multitoc partitioning. */
11466 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11468 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11470 /* After the second pass, toc_curr tracks the TOC offset used
11471 for code sections below in ppc64_elf_next_input_section. */
11472 htab->toc_curr = TOC_BASE_OFF;
11475 /* No toc references were found in ISEC. If the code in ISEC makes no
11476 calls, then there's no need to use toc adjusting stubs when branching
11477 into ISEC. Actually, indirect calls from ISEC are OK as they will
11478 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11479 needed, and 2 if a cyclical call-graph was found but no other reason
11480 for a stub was detected. If called from the top level, a return of
11481 2 means the same as a return of 0. */
11484 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11488 /* Mark this section as checked. */
11489 isec->call_check_done = 1;
11491 /* We know none of our code bearing sections will need toc stubs. */
11492 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11495 if (isec->size == 0)
11498 if (isec->output_section == NULL)
11502 if (isec->reloc_count != 0)
11504 Elf_Internal_Rela *relstart, *rel;
11505 Elf_Internal_Sym *local_syms;
11506 struct ppc_link_hash_table *htab;
11508 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11509 info->keep_memory);
11510 if (relstart == NULL)
11513 /* Look for branches to outside of this section. */
11515 htab = ppc_hash_table (info);
11519 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11521 enum elf_ppc64_reloc_type r_type;
11522 unsigned long r_symndx;
11523 struct elf_link_hash_entry *h;
11524 struct ppc_link_hash_entry *eh;
11525 Elf_Internal_Sym *sym;
11527 struct _opd_sec_data *opd;
11531 r_type = ELF64_R_TYPE (rel->r_info);
11532 if (r_type != R_PPC64_REL24
11533 && r_type != R_PPC64_REL14
11534 && r_type != R_PPC64_REL14_BRTAKEN
11535 && r_type != R_PPC64_REL14_BRNTAKEN)
11538 r_symndx = ELF64_R_SYM (rel->r_info);
11539 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11546 /* Calls to dynamic lib functions go through a plt call stub
11548 eh = (struct ppc_link_hash_entry *) h;
11550 && (eh->elf.plt.plist != NULL
11552 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11558 if (sym_sec == NULL)
11559 /* Ignore other undefined symbols. */
11562 /* Assume branches to other sections not included in the
11563 link need stubs too, to cover -R and absolute syms. */
11564 if (sym_sec->output_section == NULL)
11571 sym_value = sym->st_value;
11574 if (h->root.type != bfd_link_hash_defined
11575 && h->root.type != bfd_link_hash_defweak)
11577 sym_value = h->root.u.def.value;
11579 sym_value += rel->r_addend;
11581 /* If this branch reloc uses an opd sym, find the code section. */
11582 opd = get_opd_info (sym_sec);
11585 if (h == NULL && opd->adjust != NULL)
11589 adjust = opd->adjust[sym->st_value / 8];
11591 /* Assume deleted functions won't ever be called. */
11593 sym_value += adjust;
11596 dest = opd_entry_value (sym_sec, sym_value,
11597 &sym_sec, NULL, FALSE);
11598 if (dest == (bfd_vma) -1)
11603 + sym_sec->output_offset
11604 + sym_sec->output_section->vma);
11606 /* Ignore branch to self. */
11607 if (sym_sec == isec)
11610 /* If the called function uses the toc, we need a stub. */
11611 if (sym_sec->has_toc_reloc
11612 || sym_sec->makes_toc_func_call)
11618 /* Assume any branch that needs a long branch stub might in fact
11619 need a plt_branch stub. A plt_branch stub uses r2. */
11620 else if (dest - (isec->output_offset
11621 + isec->output_section->vma
11622 + rel->r_offset) + (1 << 25)
11623 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11631 /* If calling back to a section in the process of being
11632 tested, we can't say for sure that no toc adjusting stubs
11633 are needed, so don't return zero. */
11634 else if (sym_sec->call_check_in_progress)
11637 /* Branches to another section that itself doesn't have any TOC
11638 references are OK. Recursively call ourselves to check. */
11639 else if (!sym_sec->call_check_done)
11643 /* Mark current section as indeterminate, so that other
11644 sections that call back to current won't be marked as
11646 isec->call_check_in_progress = 1;
11647 recur = toc_adjusting_stub_needed (info, sym_sec);
11648 isec->call_check_in_progress = 0;
11659 if (local_syms != NULL
11660 && (elf_symtab_hdr (isec->owner).contents
11661 != (unsigned char *) local_syms))
11663 if (elf_section_data (isec)->relocs != relstart)
11668 && isec->map_head.s != NULL
11669 && (strcmp (isec->output_section->name, ".init") == 0
11670 || strcmp (isec->output_section->name, ".fini") == 0))
11672 if (isec->map_head.s->has_toc_reloc
11673 || isec->map_head.s->makes_toc_func_call)
11675 else if (!isec->map_head.s->call_check_done)
11678 isec->call_check_in_progress = 1;
11679 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11680 isec->call_check_in_progress = 0;
11687 isec->makes_toc_func_call = 1;
11692 /* The linker repeatedly calls this function for each input section,
11693 in the order that input sections are linked into output sections.
11694 Build lists of input sections to determine groupings between which
11695 we may insert linker stubs. */
11698 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11700 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11705 if ((isec->output_section->flags & SEC_CODE) != 0
11706 && isec->output_section->index <= htab->top_index)
11708 asection **list = htab->input_list + isec->output_section->index;
11709 /* Steal the link_sec pointer for our list. */
11710 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11711 /* This happens to make the list in reverse order,
11712 which is what we want. */
11713 PREV_SEC (isec) = *list;
11717 if (htab->multi_toc_needed)
11719 /* Analyse sections that aren't already flagged as needing a
11720 valid toc pointer. Exclude .fixup for the linux kernel.
11721 .fixup contains branches, but only back to the function that
11722 hit an exception. */
11723 if (!(isec->has_toc_reloc
11724 || (isec->flags & SEC_CODE) == 0
11725 || strcmp (isec->name, ".fixup") == 0
11726 || isec->call_check_done))
11728 if (toc_adjusting_stub_needed (info, isec) < 0)
11731 /* Make all sections use the TOC assigned for this object file.
11732 This will be wrong for pasted sections; We fix that in
11733 check_pasted_section(). */
11734 if (elf_gp (isec->owner) != 0)
11735 htab->toc_curr = elf_gp (isec->owner);
11738 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11742 /* Check that all .init and .fini sections use the same toc, if they
11743 have toc relocs. */
11746 check_pasted_section (struct bfd_link_info *info, const char *name)
11748 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11752 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11753 bfd_vma toc_off = 0;
11756 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11757 if (i->has_toc_reloc)
11760 toc_off = htab->stub_group[i->id].toc_off;
11761 else if (toc_off != htab->stub_group[i->id].toc_off)
11766 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11767 if (i->makes_toc_func_call)
11769 toc_off = htab->stub_group[i->id].toc_off;
11773 /* Make sure the whole pasted function uses the same toc offset. */
11775 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11776 htab->stub_group[i->id].toc_off = toc_off;
11782 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11784 return (check_pasted_section (info, ".init")
11785 & check_pasted_section (info, ".fini"));
11788 /* See whether we can group stub sections together. Grouping stub
11789 sections may result in fewer stubs. More importantly, we need to
11790 put all .init* and .fini* stubs at the beginning of the .init or
11791 .fini output sections respectively, because glibc splits the
11792 _init and _fini functions into multiple parts. Putting a stub in
11793 the middle of a function is not a good idea. */
11796 group_sections (struct ppc_link_hash_table *htab,
11797 bfd_size_type stub_group_size,
11798 bfd_boolean stubs_always_before_branch)
11801 bfd_size_type stub14_group_size;
11802 bfd_boolean suppress_size_errors;
11804 suppress_size_errors = FALSE;
11805 stub14_group_size = stub_group_size;
11806 if (stub_group_size == 1)
11808 /* Default values. */
11809 if (stubs_always_before_branch)
11811 stub_group_size = 0x1e00000;
11812 stub14_group_size = 0x7800;
11816 stub_group_size = 0x1c00000;
11817 stub14_group_size = 0x7000;
11819 suppress_size_errors = TRUE;
11822 list = htab->input_list + htab->top_index;
11825 asection *tail = *list;
11826 while (tail != NULL)
11830 bfd_size_type total;
11831 bfd_boolean big_sec;
11835 total = tail->size;
11836 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11837 && ppc64_elf_section_data (tail)->has_14bit_branch
11838 ? stub14_group_size : stub_group_size);
11839 if (big_sec && !suppress_size_errors)
11840 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11841 tail->owner, tail);
11842 curr_toc = htab->stub_group[tail->id].toc_off;
11844 while ((prev = PREV_SEC (curr)) != NULL
11845 && ((total += curr->output_offset - prev->output_offset)
11846 < (ppc64_elf_section_data (prev) != NULL
11847 && ppc64_elf_section_data (prev)->has_14bit_branch
11848 ? stub14_group_size : stub_group_size))
11849 && htab->stub_group[prev->id].toc_off == curr_toc)
11852 /* OK, the size from the start of CURR to the end is less
11853 than stub_group_size and thus can be handled by one stub
11854 section. (or the tail section is itself larger than
11855 stub_group_size, in which case we may be toast.) We
11856 should really be keeping track of the total size of stubs
11857 added here, as stubs contribute to the final output
11858 section size. That's a little tricky, and this way will
11859 only break if stubs added make the total size more than
11860 2^25, ie. for the default stub_group_size, if stubs total
11861 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11864 prev = PREV_SEC (tail);
11865 /* Set up this stub group. */
11866 htab->stub_group[tail->id].link_sec = curr;
11868 while (tail != curr && (tail = prev) != NULL);
11870 /* But wait, there's more! Input sections up to stub_group_size
11871 bytes before the stub section can be handled by it too.
11872 Don't do this if we have a really large section after the
11873 stubs, as adding more stubs increases the chance that
11874 branches may not reach into the stub section. */
11875 if (!stubs_always_before_branch && !big_sec)
11878 while (prev != NULL
11879 && ((total += tail->output_offset - prev->output_offset)
11880 < (ppc64_elf_section_data (prev) != NULL
11881 && ppc64_elf_section_data (prev)->has_14bit_branch
11882 ? stub14_group_size : stub_group_size))
11883 && htab->stub_group[prev->id].toc_off == curr_toc)
11886 prev = PREV_SEC (tail);
11887 htab->stub_group[tail->id].link_sec = curr;
11893 while (list-- != htab->input_list);
11894 free (htab->input_list);
11898 static const unsigned char glink_eh_frame_cie[] =
11900 0, 0, 0, 16, /* length. */
11901 0, 0, 0, 0, /* id. */
11902 1, /* CIE version. */
11903 'z', 'R', 0, /* Augmentation string. */
11904 4, /* Code alignment. */
11905 0x78, /* Data alignment. */
11907 1, /* Augmentation size. */
11908 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11909 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11913 /* Stripping output sections is normally done before dynamic section
11914 symbols have been allocated. This function is called later, and
11915 handles cases like htab->brlt which is mapped to its own output
11919 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11921 if (isec->size == 0
11922 && isec->output_section->size == 0
11923 && !(isec->output_section->flags & SEC_KEEP)
11924 && !bfd_section_removed_from_list (info->output_bfd,
11925 isec->output_section)
11926 && elf_section_data (isec->output_section)->dynindx == 0)
11928 isec->output_section->flags |= SEC_EXCLUDE;
11929 bfd_section_list_remove (info->output_bfd, isec->output_section);
11930 info->output_bfd->section_count--;
11934 /* Determine and set the size of the stub section for a final link.
11936 The basic idea here is to examine all the relocations looking for
11937 PC-relative calls to a target that is unreachable with a "bl"
11941 ppc64_elf_size_stubs (struct bfd_link_info *info)
11943 bfd_size_type stub_group_size;
11944 bfd_boolean stubs_always_before_branch;
11945 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11950 if (htab->params->plt_thread_safe == -1 && !info->executable)
11951 htab->params->plt_thread_safe = 1;
11952 if (!htab->opd_abi)
11953 htab->params->plt_thread_safe = 0;
11954 else if (htab->params->plt_thread_safe == -1)
11956 static const char *const thread_starter[] =
11960 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11962 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11963 "mq_notify", "create_timer",
11968 "GOMP_parallel_start",
11969 "GOMP_parallel_loop_static",
11970 "GOMP_parallel_loop_static_start",
11971 "GOMP_parallel_loop_dynamic",
11972 "GOMP_parallel_loop_dynamic_start",
11973 "GOMP_parallel_loop_guided",
11974 "GOMP_parallel_loop_guided_start",
11975 "GOMP_parallel_loop_runtime",
11976 "GOMP_parallel_loop_runtime_start",
11977 "GOMP_parallel_sections",
11978 "GOMP_parallel_sections_start",
11982 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11984 struct elf_link_hash_entry *h;
11985 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11986 FALSE, FALSE, TRUE);
11987 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11988 if (htab->params->plt_thread_safe)
11992 stubs_always_before_branch = htab->params->group_size < 0;
11993 if (htab->params->group_size < 0)
11994 stub_group_size = -htab->params->group_size;
11996 stub_group_size = htab->params->group_size;
11998 group_sections (htab, stub_group_size, stubs_always_before_branch);
12003 unsigned int bfd_indx;
12004 asection *stub_sec;
12006 htab->stub_iteration += 1;
12008 for (input_bfd = info->input_bfds, bfd_indx = 0;
12010 input_bfd = input_bfd->link.next, bfd_indx++)
12012 Elf_Internal_Shdr *symtab_hdr;
12014 Elf_Internal_Sym *local_syms = NULL;
12016 if (!is_ppc64_elf (input_bfd))
12019 /* We'll need the symbol table in a second. */
12020 symtab_hdr = &elf_symtab_hdr (input_bfd);
12021 if (symtab_hdr->sh_info == 0)
12024 /* Walk over each section attached to the input bfd. */
12025 for (section = input_bfd->sections;
12027 section = section->next)
12029 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12031 /* If there aren't any relocs, then there's nothing more
12033 if ((section->flags & SEC_RELOC) == 0
12034 || (section->flags & SEC_ALLOC) == 0
12035 || (section->flags & SEC_LOAD) == 0
12036 || (section->flags & SEC_CODE) == 0
12037 || section->reloc_count == 0)
12040 /* If this section is a link-once section that will be
12041 discarded, then don't create any stubs. */
12042 if (section->output_section == NULL
12043 || section->output_section->owner != info->output_bfd)
12046 /* Get the relocs. */
12048 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12049 info->keep_memory);
12050 if (internal_relocs == NULL)
12051 goto error_ret_free_local;
12053 /* Now examine each relocation. */
12054 irela = internal_relocs;
12055 irelaend = irela + section->reloc_count;
12056 for (; irela < irelaend; irela++)
12058 enum elf_ppc64_reloc_type r_type;
12059 unsigned int r_indx;
12060 enum ppc_stub_type stub_type;
12061 struct ppc_stub_hash_entry *stub_entry;
12062 asection *sym_sec, *code_sec;
12063 bfd_vma sym_value, code_value;
12064 bfd_vma destination;
12065 unsigned long local_off;
12066 bfd_boolean ok_dest;
12067 struct ppc_link_hash_entry *hash;
12068 struct ppc_link_hash_entry *fdh;
12069 struct elf_link_hash_entry *h;
12070 Elf_Internal_Sym *sym;
12072 const asection *id_sec;
12073 struct _opd_sec_data *opd;
12074 struct plt_entry *plt_ent;
12076 r_type = ELF64_R_TYPE (irela->r_info);
12077 r_indx = ELF64_R_SYM (irela->r_info);
12079 if (r_type >= R_PPC64_max)
12081 bfd_set_error (bfd_error_bad_value);
12082 goto error_ret_free_internal;
12085 /* Only look for stubs on branch instructions. */
12086 if (r_type != R_PPC64_REL24
12087 && r_type != R_PPC64_REL14
12088 && r_type != R_PPC64_REL14_BRTAKEN
12089 && r_type != R_PPC64_REL14_BRNTAKEN)
12092 /* Now determine the call target, its name, value,
12094 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12095 r_indx, input_bfd))
12096 goto error_ret_free_internal;
12097 hash = (struct ppc_link_hash_entry *) h;
12104 sym_value = sym->st_value;
12107 else if (hash->elf.root.type == bfd_link_hash_defined
12108 || hash->elf.root.type == bfd_link_hash_defweak)
12110 sym_value = hash->elf.root.u.def.value;
12111 if (sym_sec->output_section != NULL)
12114 else if (hash->elf.root.type == bfd_link_hash_undefweak
12115 || hash->elf.root.type == bfd_link_hash_undefined)
12117 /* Recognise an old ABI func code entry sym, and
12118 use the func descriptor sym instead if it is
12120 if (hash->elf.root.root.string[0] == '.'
12121 && (fdh = lookup_fdh (hash, htab)) != NULL)
12123 if (fdh->elf.root.type == bfd_link_hash_defined
12124 || fdh->elf.root.type == bfd_link_hash_defweak)
12126 sym_sec = fdh->elf.root.u.def.section;
12127 sym_value = fdh->elf.root.u.def.value;
12128 if (sym_sec->output_section != NULL)
12137 bfd_set_error (bfd_error_bad_value);
12138 goto error_ret_free_internal;
12145 sym_value += irela->r_addend;
12146 destination = (sym_value
12147 + sym_sec->output_offset
12148 + sym_sec->output_section->vma);
12149 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12154 code_sec = sym_sec;
12155 code_value = sym_value;
12156 opd = get_opd_info (sym_sec);
12161 if (hash == NULL && opd->adjust != NULL)
12163 long adjust = opd->adjust[sym_value / 8];
12166 code_value += adjust;
12167 sym_value += adjust;
12169 dest = opd_entry_value (sym_sec, sym_value,
12170 &code_sec, &code_value, FALSE);
12171 if (dest != (bfd_vma) -1)
12173 destination = dest;
12176 /* Fixup old ABI sym to point at code
12178 hash->elf.root.type = bfd_link_hash_defweak;
12179 hash->elf.root.u.def.section = code_sec;
12180 hash->elf.root.u.def.value = code_value;
12185 /* Determine what (if any) linker stub is needed. */
12187 stub_type = ppc_type_of_stub (section, irela, &hash,
12188 &plt_ent, destination,
12191 if (stub_type != ppc_stub_plt_call)
12193 /* Check whether we need a TOC adjusting stub.
12194 Since the linker pastes together pieces from
12195 different object files when creating the
12196 _init and _fini functions, it may be that a
12197 call to what looks like a local sym is in
12198 fact a call needing a TOC adjustment. */
12199 if (code_sec != NULL
12200 && code_sec->output_section != NULL
12201 && (htab->stub_group[code_sec->id].toc_off
12202 != htab->stub_group[section->id].toc_off)
12203 && (code_sec->has_toc_reloc
12204 || code_sec->makes_toc_func_call))
12205 stub_type = ppc_stub_long_branch_r2off;
12208 if (stub_type == ppc_stub_none)
12211 /* __tls_get_addr calls might be eliminated. */
12212 if (stub_type != ppc_stub_plt_call
12214 && (hash == htab->tls_get_addr
12215 || hash == htab->tls_get_addr_fd)
12216 && section->has_tls_reloc
12217 && irela != internal_relocs)
12219 /* Get tls info. */
12220 unsigned char *tls_mask;
12222 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12223 irela - 1, input_bfd))
12224 goto error_ret_free_internal;
12225 if (*tls_mask != 0)
12229 if (stub_type == ppc_stub_plt_call
12230 && irela + 1 < irelaend
12231 && irela[1].r_offset == irela->r_offset + 4
12232 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12234 if (!tocsave_find (htab, INSERT,
12235 &local_syms, irela + 1, input_bfd))
12236 goto error_ret_free_internal;
12238 else if (stub_type == ppc_stub_plt_call)
12239 stub_type = ppc_stub_plt_call_r2save;
12241 /* Support for grouping stub sections. */
12242 id_sec = htab->stub_group[section->id].link_sec;
12244 /* Get the name of this stub. */
12245 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12247 goto error_ret_free_internal;
12249 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12250 stub_name, FALSE, FALSE);
12251 if (stub_entry != NULL)
12253 /* The proper stub has already been created. */
12255 if (stub_type == ppc_stub_plt_call_r2save)
12256 stub_entry->stub_type = stub_type;
12260 stub_entry = ppc_add_stub (stub_name, section, info);
12261 if (stub_entry == NULL)
12264 error_ret_free_internal:
12265 if (elf_section_data (section)->relocs == NULL)
12266 free (internal_relocs);
12267 error_ret_free_local:
12268 if (local_syms != NULL
12269 && (symtab_hdr->contents
12270 != (unsigned char *) local_syms))
12275 stub_entry->stub_type = stub_type;
12276 if (stub_type != ppc_stub_plt_call
12277 && stub_type != ppc_stub_plt_call_r2save)
12279 stub_entry->target_value = code_value;
12280 stub_entry->target_section = code_sec;
12284 stub_entry->target_value = sym_value;
12285 stub_entry->target_section = sym_sec;
12287 stub_entry->h = hash;
12288 stub_entry->plt_ent = plt_ent;
12289 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12291 if (stub_entry->h != NULL)
12292 htab->stub_globals += 1;
12295 /* We're done with the internal relocs, free them. */
12296 if (elf_section_data (section)->relocs != internal_relocs)
12297 free (internal_relocs);
12300 if (local_syms != NULL
12301 && symtab_hdr->contents != (unsigned char *) local_syms)
12303 if (!info->keep_memory)
12306 symtab_hdr->contents = (unsigned char *) local_syms;
12310 /* We may have added some stubs. Find out the new size of the
12312 for (stub_sec = htab->params->stub_bfd->sections;
12314 stub_sec = stub_sec->next)
12315 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12317 stub_sec->rawsize = stub_sec->size;
12318 stub_sec->size = 0;
12319 stub_sec->reloc_count = 0;
12320 stub_sec->flags &= ~SEC_RELOC;
12323 htab->brlt->size = 0;
12324 htab->brlt->reloc_count = 0;
12325 htab->brlt->flags &= ~SEC_RELOC;
12326 if (htab->relbrlt != NULL)
12327 htab->relbrlt->size = 0;
12329 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12331 if (info->emitrelocations
12332 && htab->glink != NULL && htab->glink->size != 0)
12334 htab->glink->reloc_count = 1;
12335 htab->glink->flags |= SEC_RELOC;
12338 if (htab->glink_eh_frame != NULL
12339 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12340 && htab->glink_eh_frame->output_section->size != 0)
12342 size_t size = 0, align;
12344 for (stub_sec = htab->params->stub_bfd->sections;
12346 stub_sec = stub_sec->next)
12347 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12349 if (htab->glink != NULL && htab->glink->size != 0)
12352 size += sizeof (glink_eh_frame_cie);
12354 align <<= htab->glink_eh_frame->output_section->alignment_power;
12356 size = (size + align) & ~align;
12357 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12358 htab->glink_eh_frame->size = size;
12361 if (htab->params->plt_stub_align != 0)
12362 for (stub_sec = htab->params->stub_bfd->sections;
12364 stub_sec = stub_sec->next)
12365 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12366 stub_sec->size = ((stub_sec->size
12367 + (1 << htab->params->plt_stub_align) - 1)
12368 & (-1 << htab->params->plt_stub_align));
12370 for (stub_sec = htab->params->stub_bfd->sections;
12372 stub_sec = stub_sec->next)
12373 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12374 && stub_sec->rawsize != stub_sec->size)
12377 /* Exit from this loop when no stubs have been added, and no stubs
12378 have changed size. */
12379 if (stub_sec == NULL
12380 && (htab->glink_eh_frame == NULL
12381 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12384 /* Ask the linker to do its stuff. */
12385 (*htab->params->layout_sections_again) ();
12388 if (htab->glink_eh_frame != NULL
12389 && htab->glink_eh_frame->size != 0)
12392 bfd_byte *p, *last_fde;
12393 size_t last_fde_len, size, align, pad;
12394 asection *stub_sec;
12396 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12399 htab->glink_eh_frame->contents = p;
12402 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12403 /* CIE length (rewrite in case little-endian). */
12404 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12405 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12406 p += sizeof (glink_eh_frame_cie);
12408 for (stub_sec = htab->params->stub_bfd->sections;
12410 stub_sec = stub_sec->next)
12411 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12416 bfd_put_32 (htab->elf.dynobj, 20, p);
12419 val = p - htab->glink_eh_frame->contents;
12420 bfd_put_32 (htab->elf.dynobj, val, p);
12422 /* Offset to stub section, written later. */
12424 /* stub section size. */
12425 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12427 /* Augmentation. */
12432 if (htab->glink != NULL && htab->glink->size != 0)
12437 bfd_put_32 (htab->elf.dynobj, 20, p);
12440 val = p - htab->glink_eh_frame->contents;
12441 bfd_put_32 (htab->elf.dynobj, val, p);
12443 /* Offset to .glink, written later. */
12446 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12448 /* Augmentation. */
12451 *p++ = DW_CFA_advance_loc + 1;
12452 *p++ = DW_CFA_register;
12455 *p++ = DW_CFA_advance_loc + 4;
12456 *p++ = DW_CFA_restore_extended;
12459 /* Subsume any padding into the last FDE if user .eh_frame
12460 sections are aligned more than glink_eh_frame. Otherwise any
12461 zero padding will be seen as a terminator. */
12462 size = p - htab->glink_eh_frame->contents;
12464 align <<= htab->glink_eh_frame->output_section->alignment_power;
12466 pad = ((size + align) & ~align) - size;
12467 htab->glink_eh_frame->size = size + pad;
12468 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12471 maybe_strip_output (info, htab->brlt);
12472 if (htab->glink_eh_frame != NULL)
12473 maybe_strip_output (info, htab->glink_eh_frame);
12478 /* Called after we have determined section placement. If sections
12479 move, we'll be called again. Provide a value for TOCstart. */
12482 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12487 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12488 order. The TOC starts where the first of these sections starts. */
12489 s = bfd_get_section_by_name (obfd, ".got");
12490 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12491 s = bfd_get_section_by_name (obfd, ".toc");
12492 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12493 s = bfd_get_section_by_name (obfd, ".tocbss");
12494 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12495 s = bfd_get_section_by_name (obfd, ".plt");
12496 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12498 /* This may happen for
12499 o references to TOC base (SYM@toc / TOC[tc0]) without a
12501 o bad linker script
12502 o --gc-sections and empty TOC sections
12504 FIXME: Warn user? */
12506 /* Look for a likely section. We probably won't even be
12508 for (s = obfd->sections; s != NULL; s = s->next)
12509 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12511 == (SEC_ALLOC | SEC_SMALL_DATA))
12514 for (s = obfd->sections; s != NULL; s = s->next)
12515 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12516 == (SEC_ALLOC | SEC_SMALL_DATA))
12519 for (s = obfd->sections; s != NULL; s = s->next)
12520 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12524 for (s = obfd->sections; s != NULL; s = s->next)
12525 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12531 TOCstart = s->output_section->vma + s->output_offset;
12533 _bfd_set_gp_value (obfd, TOCstart);
12535 if (info != NULL && s != NULL)
12537 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12541 if (htab->elf.hgot != NULL)
12543 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12544 htab->elf.hgot->root.u.def.section = s;
12549 struct bfd_link_hash_entry *bh = NULL;
12550 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12551 s, TOC_BASE_OFF, NULL, FALSE,
12558 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12559 write out any global entry stubs. */
12562 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12564 struct bfd_link_info *info;
12565 struct ppc_link_hash_table *htab;
12566 struct plt_entry *pent;
12569 if (h->root.type == bfd_link_hash_indirect)
12572 if (!h->pointer_equality_needed)
12575 if (h->def_regular)
12579 htab = ppc_hash_table (info);
12584 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12585 if (pent->plt.offset != (bfd_vma) -1
12586 && pent->addend == 0)
12592 p = s->contents + h->root.u.def.value;
12593 plt = htab->elf.splt;
12594 if (!htab->elf.dynamic_sections_created
12595 || h->dynindx == -1)
12596 plt = htab->elf.iplt;
12597 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12598 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12600 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12602 info->callbacks->einfo
12603 (_("%P: linkage table error against `%T'\n"),
12604 h->root.root.string);
12605 bfd_set_error (bfd_error_bad_value);
12606 htab->stub_error = TRUE;
12609 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12610 if (htab->params->emit_stub_syms)
12612 size_t len = strlen (h->root.root.string);
12613 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12618 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12619 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12622 if (h->root.type == bfd_link_hash_new)
12624 h->root.type = bfd_link_hash_defined;
12625 h->root.u.def.section = s;
12626 h->root.u.def.value = p - s->contents;
12627 h->ref_regular = 1;
12628 h->def_regular = 1;
12629 h->ref_regular_nonweak = 1;
12630 h->forced_local = 1;
12635 if (PPC_HA (off) != 0)
12637 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12640 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12642 bfd_put_32 (s->owner, MTCTR_R12, p);
12644 bfd_put_32 (s->owner, BCTR, p);
12650 /* Build all the stubs associated with the current output file.
12651 The stubs are kept in a hash table attached to the main linker
12652 hash table. This function is called via gldelf64ppc_finish. */
12655 ppc64_elf_build_stubs (struct bfd_link_info *info,
12658 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12659 asection *stub_sec;
12661 int stub_sec_count = 0;
12666 /* Allocate memory to hold the linker stubs. */
12667 for (stub_sec = htab->params->stub_bfd->sections;
12669 stub_sec = stub_sec->next)
12670 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12671 && stub_sec->size != 0)
12673 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12674 if (stub_sec->contents == NULL)
12676 /* We want to check that built size is the same as calculated
12677 size. rawsize is a convenient location to use. */
12678 stub_sec->rawsize = stub_sec->size;
12679 stub_sec->size = 0;
12682 if (htab->glink != NULL && htab->glink->size != 0)
12687 /* Build the .glink plt call stub. */
12688 if (htab->params->emit_stub_syms)
12690 struct elf_link_hash_entry *h;
12691 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12692 TRUE, FALSE, FALSE);
12695 if (h->root.type == bfd_link_hash_new)
12697 h->root.type = bfd_link_hash_defined;
12698 h->root.u.def.section = htab->glink;
12699 h->root.u.def.value = 8;
12700 h->ref_regular = 1;
12701 h->def_regular = 1;
12702 h->ref_regular_nonweak = 1;
12703 h->forced_local = 1;
12707 plt0 = (htab->elf.splt->output_section->vma
12708 + htab->elf.splt->output_offset
12710 if (info->emitrelocations)
12712 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12715 r->r_offset = (htab->glink->output_offset
12716 + htab->glink->output_section->vma);
12717 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12718 r->r_addend = plt0;
12720 p = htab->glink->contents;
12721 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12722 bfd_put_64 (htab->glink->owner, plt0, p);
12726 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12728 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12730 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12732 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12734 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12736 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12738 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12740 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12742 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12744 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12749 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12751 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12753 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12755 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12757 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12759 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12761 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12763 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12765 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12767 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12769 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12771 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12774 bfd_put_32 (htab->glink->owner, BCTR, p);
12776 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12778 bfd_put_32 (htab->glink->owner, NOP, p);
12782 /* Build the .glink lazy link call stubs. */
12784 while (p < htab->glink->contents + htab->glink->rawsize)
12790 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12795 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12797 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12802 bfd_put_32 (htab->glink->owner,
12803 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12808 /* Build .glink global entry stubs. */
12809 if (htab->glink->size > htab->glink->rawsize)
12810 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12813 if (htab->brlt != NULL && htab->brlt->size != 0)
12815 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12817 if (htab->brlt->contents == NULL)
12820 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12822 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12823 htab->relbrlt->size);
12824 if (htab->relbrlt->contents == NULL)
12828 /* Build the stubs as directed by the stub hash table. */
12829 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12831 if (htab->relbrlt != NULL)
12832 htab->relbrlt->reloc_count = 0;
12834 if (htab->params->plt_stub_align != 0)
12835 for (stub_sec = htab->params->stub_bfd->sections;
12837 stub_sec = stub_sec->next)
12838 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12839 stub_sec->size = ((stub_sec->size
12840 + (1 << htab->params->plt_stub_align) - 1)
12841 & (-1 << htab->params->plt_stub_align));
12843 for (stub_sec = htab->params->stub_bfd->sections;
12845 stub_sec = stub_sec->next)
12846 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12848 stub_sec_count += 1;
12849 if (stub_sec->rawsize != stub_sec->size)
12853 /* Note that the glink_eh_frame check here is not only testing that
12854 the generated size matched the calculated size but also that
12855 bfd_elf_discard_info didn't make any changes to the section. */
12856 if (stub_sec != NULL
12857 || (htab->glink_eh_frame != NULL
12858 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12860 htab->stub_error = TRUE;
12861 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12864 if (htab->stub_error)
12869 *stats = bfd_malloc (500);
12870 if (*stats == NULL)
12873 sprintf (*stats, _("linker stubs in %u group%s\n"
12875 " toc adjust %lu\n"
12876 " long branch %lu\n"
12877 " long toc adj %lu\n"
12879 " plt call toc %lu\n"
12880 " global entry %lu"),
12882 stub_sec_count == 1 ? "" : "s",
12883 htab->stub_count[ppc_stub_long_branch - 1],
12884 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12885 htab->stub_count[ppc_stub_plt_branch - 1],
12886 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12887 htab->stub_count[ppc_stub_plt_call - 1],
12888 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12889 htab->stub_count[ppc_stub_global_entry - 1]);
12894 /* This function undoes the changes made by add_symbol_adjust. */
12897 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12899 struct ppc_link_hash_entry *eh;
12901 if (h->root.type == bfd_link_hash_indirect)
12904 eh = (struct ppc_link_hash_entry *) h;
12905 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12908 eh->elf.root.type = bfd_link_hash_undefined;
12913 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12915 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12918 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12921 /* What to do when ld finds relocations against symbols defined in
12922 discarded sections. */
12924 static unsigned int
12925 ppc64_elf_action_discarded (asection *sec)
12927 if (strcmp (".opd", sec->name) == 0)
12930 if (strcmp (".toc", sec->name) == 0)
12933 if (strcmp (".toc1", sec->name) == 0)
12936 return _bfd_elf_default_action_discarded (sec);
12939 /* The RELOCATE_SECTION function is called by the ELF backend linker
12940 to handle the relocations for a section.
12942 The relocs are always passed as Rela structures; if the section
12943 actually uses Rel structures, the r_addend field will always be
12946 This function is responsible for adjust the section contents as
12947 necessary, and (if using Rela relocs and generating a
12948 relocatable output file) adjusting the reloc addend as
12951 This function does not have to worry about setting the reloc
12952 address or the reloc symbol index.
12954 LOCAL_SYMS is a pointer to the swapped in local symbols.
12956 LOCAL_SECTIONS is an array giving the section in the input file
12957 corresponding to the st_shndx field of each local symbol.
12959 The global hash table entry for the global symbols can be found
12960 via elf_sym_hashes (input_bfd).
12962 When generating relocatable output, this function must handle
12963 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12964 going to be the section symbol corresponding to the output
12965 section, which means that the addend must be adjusted
12969 ppc64_elf_relocate_section (bfd *output_bfd,
12970 struct bfd_link_info *info,
12972 asection *input_section,
12973 bfd_byte *contents,
12974 Elf_Internal_Rela *relocs,
12975 Elf_Internal_Sym *local_syms,
12976 asection **local_sections)
12978 struct ppc_link_hash_table *htab;
12979 Elf_Internal_Shdr *symtab_hdr;
12980 struct elf_link_hash_entry **sym_hashes;
12981 Elf_Internal_Rela *rel;
12982 Elf_Internal_Rela *relend;
12983 Elf_Internal_Rela outrel;
12985 struct got_entry **local_got_ents;
12987 bfd_boolean ret = TRUE;
12988 bfd_boolean is_opd;
12989 /* Assume 'at' branch hints. */
12990 bfd_boolean is_isa_v2 = TRUE;
12991 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12993 /* Initialize howto table if needed. */
12994 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12997 htab = ppc_hash_table (info);
13001 /* Don't relocate stub sections. */
13002 if (input_section->owner == htab->params->stub_bfd)
13005 BFD_ASSERT (is_ppc64_elf (input_bfd));
13007 local_got_ents = elf_local_got_ents (input_bfd);
13008 TOCstart = elf_gp (output_bfd);
13009 symtab_hdr = &elf_symtab_hdr (input_bfd);
13010 sym_hashes = elf_sym_hashes (input_bfd);
13011 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13014 relend = relocs + input_section->reloc_count;
13015 for (; rel < relend; rel++)
13017 enum elf_ppc64_reloc_type r_type;
13019 bfd_reloc_status_type r;
13020 Elf_Internal_Sym *sym;
13022 struct elf_link_hash_entry *h_elf;
13023 struct ppc_link_hash_entry *h;
13024 struct ppc_link_hash_entry *fdh;
13025 const char *sym_name;
13026 unsigned long r_symndx, toc_symndx;
13027 bfd_vma toc_addend;
13028 unsigned char tls_mask, tls_gd, tls_type;
13029 unsigned char sym_type;
13030 bfd_vma relocation;
13031 bfd_boolean unresolved_reloc;
13032 bfd_boolean warned;
13033 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13036 struct ppc_stub_hash_entry *stub_entry;
13037 bfd_vma max_br_offset;
13039 const Elf_Internal_Rela orig_rel = *rel;
13040 reloc_howto_type *howto;
13041 struct reloc_howto_struct alt_howto;
13043 r_type = ELF64_R_TYPE (rel->r_info);
13044 r_symndx = ELF64_R_SYM (rel->r_info);
13046 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13047 symbol of the previous ADDR64 reloc. The symbol gives us the
13048 proper TOC base to use. */
13049 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13051 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13053 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13059 unresolved_reloc = FALSE;
13062 if (r_symndx < symtab_hdr->sh_info)
13064 /* It's a local symbol. */
13065 struct _opd_sec_data *opd;
13067 sym = local_syms + r_symndx;
13068 sec = local_sections[r_symndx];
13069 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13070 sym_type = ELF64_ST_TYPE (sym->st_info);
13071 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13072 opd = get_opd_info (sec);
13073 if (opd != NULL && opd->adjust != NULL)
13075 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13080 /* If this is a relocation against the opd section sym
13081 and we have edited .opd, adjust the reloc addend so
13082 that ld -r and ld --emit-relocs output is correct.
13083 If it is a reloc against some other .opd symbol,
13084 then the symbol value will be adjusted later. */
13085 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13086 rel->r_addend += adjust;
13088 relocation += adjust;
13094 bfd_boolean ignored;
13096 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13097 r_symndx, symtab_hdr, sym_hashes,
13098 h_elf, sec, relocation,
13099 unresolved_reloc, warned, ignored);
13100 sym_name = h_elf->root.root.string;
13101 sym_type = h_elf->type;
13103 && sec->owner == output_bfd
13104 && strcmp (sec->name, ".opd") == 0)
13106 /* This is a symbol defined in a linker script. All
13107 such are defined in output sections, even those
13108 defined by simple assignment from a symbol defined in
13109 an input section. Transfer the symbol to an
13110 appropriate input .opd section, so that a branch to
13111 this symbol will be mapped to the location specified
13112 by the opd entry. */
13113 struct bfd_link_order *lo;
13114 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13115 if (lo->type == bfd_indirect_link_order)
13117 asection *isec = lo->u.indirect.section;
13118 if (h_elf->root.u.def.value >= isec->output_offset
13119 && h_elf->root.u.def.value < (isec->output_offset
13122 h_elf->root.u.def.value -= isec->output_offset;
13123 h_elf->root.u.def.section = isec;
13130 h = (struct ppc_link_hash_entry *) h_elf;
13132 if (sec != NULL && discarded_section (sec))
13133 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13135 ppc64_elf_howto_table[r_type], 0,
13138 if (info->relocatable)
13141 if (h != NULL && &h->elf == htab->elf.hgot)
13143 relocation = (TOCstart
13144 + htab->stub_group[input_section->id].toc_off);
13145 sec = bfd_abs_section_ptr;
13146 unresolved_reloc = FALSE;
13149 /* TLS optimizations. Replace instruction sequences and relocs
13150 based on information we collected in tls_optimize. We edit
13151 RELOCS so that --emit-relocs will output something sensible
13152 for the final instruction stream. */
13157 tls_mask = h->tls_mask;
13158 else if (local_got_ents != NULL)
13160 struct plt_entry **local_plt = (struct plt_entry **)
13161 (local_got_ents + symtab_hdr->sh_info);
13162 unsigned char *lgot_masks = (unsigned char *)
13163 (local_plt + symtab_hdr->sh_info);
13164 tls_mask = lgot_masks[r_symndx];
13167 && (r_type == R_PPC64_TLS
13168 || r_type == R_PPC64_TLSGD
13169 || r_type == R_PPC64_TLSLD))
13171 /* Check for toc tls entries. */
13172 unsigned char *toc_tls;
13174 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13175 &local_syms, rel, input_bfd))
13179 tls_mask = *toc_tls;
13182 /* Check that tls relocs are used with tls syms, and non-tls
13183 relocs are used with non-tls syms. */
13184 if (r_symndx != STN_UNDEF
13185 && r_type != R_PPC64_NONE
13187 || h->elf.root.type == bfd_link_hash_defined
13188 || h->elf.root.type == bfd_link_hash_defweak)
13189 && (IS_PPC64_TLS_RELOC (r_type)
13190 != (sym_type == STT_TLS
13191 || (sym_type == STT_SECTION
13192 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13195 && (r_type == R_PPC64_TLS
13196 || r_type == R_PPC64_TLSGD
13197 || r_type == R_PPC64_TLSLD))
13198 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13201 info->callbacks->einfo
13202 (!IS_PPC64_TLS_RELOC (r_type)
13203 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13204 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13205 input_bfd, input_section, rel->r_offset,
13206 ppc64_elf_howto_table[r_type]->name,
13210 /* Ensure reloc mapping code below stays sane. */
13211 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13212 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13213 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13214 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13215 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13216 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13217 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13218 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13219 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13220 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13228 case R_PPC64_LO_DS_OPT:
13229 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13230 if ((insn & (0x3f << 26)) != 58u << 26)
13232 insn += (14u << 26) - (58u << 26);
13233 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13234 r_type = R_PPC64_TOC16_LO;
13235 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13238 case R_PPC64_TOC16:
13239 case R_PPC64_TOC16_LO:
13240 case R_PPC64_TOC16_DS:
13241 case R_PPC64_TOC16_LO_DS:
13243 /* Check for toc tls entries. */
13244 unsigned char *toc_tls;
13247 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13248 &local_syms, rel, input_bfd);
13254 tls_mask = *toc_tls;
13255 if (r_type == R_PPC64_TOC16_DS
13256 || r_type == R_PPC64_TOC16_LO_DS)
13259 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13264 /* If we found a GD reloc pair, then we might be
13265 doing a GD->IE transition. */
13268 tls_gd = TLS_TPRELGD;
13269 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13272 else if (retval == 3)
13274 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13282 case R_PPC64_GOT_TPREL16_HI:
13283 case R_PPC64_GOT_TPREL16_HA:
13285 && (tls_mask & TLS_TPREL) == 0)
13287 rel->r_offset -= d_offset;
13288 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13289 r_type = R_PPC64_NONE;
13290 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13294 case R_PPC64_GOT_TPREL16_DS:
13295 case R_PPC64_GOT_TPREL16_LO_DS:
13297 && (tls_mask & TLS_TPREL) == 0)
13300 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13302 insn |= 0x3c0d0000; /* addis 0,13,0 */
13303 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13304 r_type = R_PPC64_TPREL16_HA;
13305 if (toc_symndx != 0)
13307 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13308 rel->r_addend = toc_addend;
13309 /* We changed the symbol. Start over in order to
13310 get h, sym, sec etc. right. */
13315 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13321 && (tls_mask & TLS_TPREL) == 0)
13323 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13324 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13327 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13328 /* Was PPC64_TLS which sits on insn boundary, now
13329 PPC64_TPREL16_LO which is at low-order half-word. */
13330 rel->r_offset += d_offset;
13331 r_type = R_PPC64_TPREL16_LO;
13332 if (toc_symndx != 0)
13334 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13335 rel->r_addend = toc_addend;
13336 /* We changed the symbol. Start over in order to
13337 get h, sym, sec etc. right. */
13342 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13346 case R_PPC64_GOT_TLSGD16_HI:
13347 case R_PPC64_GOT_TLSGD16_HA:
13348 tls_gd = TLS_TPRELGD;
13349 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13353 case R_PPC64_GOT_TLSLD16_HI:
13354 case R_PPC64_GOT_TLSLD16_HA:
13355 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13358 if ((tls_mask & tls_gd) != 0)
13359 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13360 + R_PPC64_GOT_TPREL16_DS);
13363 rel->r_offset -= d_offset;
13364 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13365 r_type = R_PPC64_NONE;
13367 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13371 case R_PPC64_GOT_TLSGD16:
13372 case R_PPC64_GOT_TLSGD16_LO:
13373 tls_gd = TLS_TPRELGD;
13374 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13378 case R_PPC64_GOT_TLSLD16:
13379 case R_PPC64_GOT_TLSLD16_LO:
13380 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13382 unsigned int insn1, insn2, insn3;
13386 offset = (bfd_vma) -1;
13387 /* If not using the newer R_PPC64_TLSGD/LD to mark
13388 __tls_get_addr calls, we must trust that the call
13389 stays with its arg setup insns, ie. that the next
13390 reloc is the __tls_get_addr call associated with
13391 the current reloc. Edit both insns. */
13392 if (input_section->has_tls_get_addr_call
13393 && rel + 1 < relend
13394 && branch_reloc_hash_match (input_bfd, rel + 1,
13395 htab->tls_get_addr,
13396 htab->tls_get_addr_fd))
13397 offset = rel[1].r_offset;
13398 if ((tls_mask & tls_gd) != 0)
13401 insn1 = bfd_get_32 (output_bfd,
13402 contents + rel->r_offset - d_offset);
13403 insn1 &= (1 << 26) - (1 << 2);
13404 insn1 |= 58 << 26; /* ld */
13405 insn2 = 0x7c636a14; /* add 3,3,13 */
13406 if (offset != (bfd_vma) -1)
13407 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13408 if ((tls_mask & TLS_EXPLICIT) == 0)
13409 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13410 + R_PPC64_GOT_TPREL16_DS);
13412 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13413 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13418 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13419 insn2 = 0x38630000; /* addi 3,3,0 */
13422 /* Was an LD reloc. */
13424 sec = local_sections[toc_symndx];
13426 r_symndx < symtab_hdr->sh_info;
13428 if (local_sections[r_symndx] == sec)
13430 if (r_symndx >= symtab_hdr->sh_info)
13431 r_symndx = STN_UNDEF;
13432 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13433 if (r_symndx != STN_UNDEF)
13434 rel->r_addend -= (local_syms[r_symndx].st_value
13435 + sec->output_offset
13436 + sec->output_section->vma);
13438 else if (toc_symndx != 0)
13440 r_symndx = toc_symndx;
13441 rel->r_addend = toc_addend;
13443 r_type = R_PPC64_TPREL16_HA;
13444 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13445 if (offset != (bfd_vma) -1)
13447 rel[1].r_info = ELF64_R_INFO (r_symndx,
13448 R_PPC64_TPREL16_LO);
13449 rel[1].r_offset = offset + d_offset;
13450 rel[1].r_addend = rel->r_addend;
13453 bfd_put_32 (output_bfd, insn1,
13454 contents + rel->r_offset - d_offset);
13455 if (offset != (bfd_vma) -1)
13457 insn3 = bfd_get_32 (output_bfd,
13458 contents + offset + 4);
13460 || insn3 == CROR_151515 || insn3 == CROR_313131)
13462 rel[1].r_offset += 4;
13463 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13466 bfd_put_32 (output_bfd, insn2, contents + offset);
13468 if ((tls_mask & tls_gd) == 0
13469 && (tls_gd == 0 || toc_symndx != 0))
13471 /* We changed the symbol. Start over in order
13472 to get h, sym, sec etc. right. */
13479 case R_PPC64_TLSGD:
13480 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13482 unsigned int insn2, insn3;
13483 bfd_vma offset = rel->r_offset;
13485 if ((tls_mask & TLS_TPRELGD) != 0)
13488 r_type = R_PPC64_NONE;
13489 insn2 = 0x7c636a14; /* add 3,3,13 */
13494 if (toc_symndx != 0)
13496 r_symndx = toc_symndx;
13497 rel->r_addend = toc_addend;
13499 r_type = R_PPC64_TPREL16_LO;
13500 rel->r_offset = offset + d_offset;
13501 insn2 = 0x38630000; /* addi 3,3,0 */
13503 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13504 /* Zap the reloc on the _tls_get_addr call too. */
13505 BFD_ASSERT (offset == rel[1].r_offset);
13506 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13507 insn3 = bfd_get_32 (output_bfd,
13508 contents + offset + 4);
13510 || insn3 == CROR_151515 || insn3 == CROR_313131)
13512 rel->r_offset += 4;
13513 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13516 bfd_put_32 (output_bfd, insn2, contents + offset);
13517 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13525 case R_PPC64_TLSLD:
13526 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13528 unsigned int insn2, insn3;
13529 bfd_vma offset = rel->r_offset;
13532 sec = local_sections[toc_symndx];
13534 r_symndx < symtab_hdr->sh_info;
13536 if (local_sections[r_symndx] == sec)
13538 if (r_symndx >= symtab_hdr->sh_info)
13539 r_symndx = STN_UNDEF;
13540 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13541 if (r_symndx != STN_UNDEF)
13542 rel->r_addend -= (local_syms[r_symndx].st_value
13543 + sec->output_offset
13544 + sec->output_section->vma);
13546 r_type = R_PPC64_TPREL16_LO;
13547 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13548 rel->r_offset = offset + d_offset;
13549 /* Zap the reloc on the _tls_get_addr call too. */
13550 BFD_ASSERT (offset == rel[1].r_offset);
13551 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13552 insn2 = 0x38630000; /* addi 3,3,0 */
13553 insn3 = bfd_get_32 (output_bfd,
13554 contents + offset + 4);
13556 || insn3 == CROR_151515 || insn3 == CROR_313131)
13558 rel->r_offset += 4;
13559 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13562 bfd_put_32 (output_bfd, insn2, contents + offset);
13568 case R_PPC64_DTPMOD64:
13569 if (rel + 1 < relend
13570 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13571 && rel[1].r_offset == rel->r_offset + 8)
13573 if ((tls_mask & TLS_GD) == 0)
13575 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13576 if ((tls_mask & TLS_TPRELGD) != 0)
13577 r_type = R_PPC64_TPREL64;
13580 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13581 r_type = R_PPC64_NONE;
13583 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13588 if ((tls_mask & TLS_LD) == 0)
13590 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13591 r_type = R_PPC64_NONE;
13592 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13597 case R_PPC64_TPREL64:
13598 if ((tls_mask & TLS_TPREL) == 0)
13600 r_type = R_PPC64_NONE;
13601 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13605 case R_PPC64_REL16_HA:
13606 /* If we are generating a non-PIC executable, edit
13607 . 0: addis 2,12,.TOC.-0b@ha
13608 . addi 2,2,.TOC.-0b@l
13609 used by ELFv2 global entry points to set up r2, to
13612 if .TOC. is in range. */
13614 && !info->traditional_format
13615 && h != NULL && &h->elf == htab->elf.hgot
13616 && rel + 1 < relend
13617 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13618 && rel[1].r_offset == rel->r_offset + 4
13619 && rel[1].r_addend == rel->r_addend + 4
13620 && relocation + 0x80008000 <= 0xffffffff)
13622 unsigned int insn1, insn2;
13623 bfd_vma offset = rel->r_offset - d_offset;
13624 insn1 = bfd_get_32 (output_bfd, contents + offset);
13625 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13626 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13627 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13629 r_type = R_PPC64_ADDR16_HA;
13630 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13631 rel->r_addend -= d_offset;
13632 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13633 rel[1].r_addend -= d_offset + 4;
13634 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13640 /* Handle other relocations that tweak non-addend part of insn. */
13642 max_br_offset = 1 << 25;
13643 addend = rel->r_addend;
13644 reloc_dest = DEST_NORMAL;
13650 case R_PPC64_TOCSAVE:
13651 if (relocation + addend == (rel->r_offset
13652 + input_section->output_offset
13653 + input_section->output_section->vma)
13654 && tocsave_find (htab, NO_INSERT,
13655 &local_syms, rel, input_bfd))
13657 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13659 || insn == CROR_151515 || insn == CROR_313131)
13660 bfd_put_32 (input_bfd,
13661 STD_R2_0R1 + STK_TOC (htab),
13662 contents + rel->r_offset);
13666 /* Branch taken prediction relocations. */
13667 case R_PPC64_ADDR14_BRTAKEN:
13668 case R_PPC64_REL14_BRTAKEN:
13669 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13672 /* Branch not taken prediction relocations. */
13673 case R_PPC64_ADDR14_BRNTAKEN:
13674 case R_PPC64_REL14_BRNTAKEN:
13675 insn |= bfd_get_32 (output_bfd,
13676 contents + rel->r_offset) & ~(0x01 << 21);
13679 case R_PPC64_REL14:
13680 max_br_offset = 1 << 15;
13683 case R_PPC64_REL24:
13684 /* Calls to functions with a different TOC, such as calls to
13685 shared objects, need to alter the TOC pointer. This is
13686 done using a linkage stub. A REL24 branching to these
13687 linkage stubs needs to be followed by a nop, as the nop
13688 will be replaced with an instruction to restore the TOC
13693 && h->oh->is_func_descriptor)
13694 fdh = ppc_follow_link (h->oh);
13695 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13697 if (stub_entry != NULL
13698 && (stub_entry->stub_type == ppc_stub_plt_call
13699 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13700 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13701 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13703 bfd_boolean can_plt_call = FALSE;
13705 /* All of these stubs will modify r2, so there must be a
13706 branch and link followed by a nop. The nop is
13707 replaced by an insn to restore r2. */
13708 if (rel->r_offset + 8 <= input_section->size)
13712 br = bfd_get_32 (input_bfd,
13713 contents + rel->r_offset);
13718 nop = bfd_get_32 (input_bfd,
13719 contents + rel->r_offset + 4);
13721 || nop == CROR_151515 || nop == CROR_313131)
13724 && (h == htab->tls_get_addr_fd
13725 || h == htab->tls_get_addr)
13726 && !htab->params->no_tls_get_addr_opt)
13728 /* Special stub used, leave nop alone. */
13731 bfd_put_32 (input_bfd,
13732 LD_R2_0R1 + STK_TOC (htab),
13733 contents + rel->r_offset + 4);
13734 can_plt_call = TRUE;
13739 if (!can_plt_call && h != NULL)
13741 const char *name = h->elf.root.root.string;
13746 if (strncmp (name, "__libc_start_main", 17) == 0
13747 && (name[17] == 0 || name[17] == '@'))
13749 /* Allow crt1 branch to go via a toc adjusting
13750 stub. Other calls that never return could do
13751 the same, if we could detect such. */
13752 can_plt_call = TRUE;
13758 /* g++ as of 20130507 emits self-calls without a
13759 following nop. This is arguably wrong since we
13760 have conflicting information. On the one hand a
13761 global symbol and on the other a local call
13762 sequence, but don't error for this special case.
13763 It isn't possible to cheaply verify we have
13764 exactly such a call. Allow all calls to the same
13766 asection *code_sec = sec;
13768 if (get_opd_info (sec) != NULL)
13770 bfd_vma off = (relocation + addend
13771 - sec->output_section->vma
13772 - sec->output_offset);
13774 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13776 if (code_sec == input_section)
13777 can_plt_call = TRUE;
13782 if (stub_entry->stub_type == ppc_stub_plt_call
13783 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13784 info->callbacks->einfo
13785 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13786 "recompile with -fPIC\n"),
13787 input_bfd, input_section, rel->r_offset, sym_name);
13789 info->callbacks->einfo
13790 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13791 "(-mcmodel=small toc adjust stub)\n"),
13792 input_bfd, input_section, rel->r_offset, sym_name);
13794 bfd_set_error (bfd_error_bad_value);
13799 && (stub_entry->stub_type == ppc_stub_plt_call
13800 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13801 unresolved_reloc = FALSE;
13804 if ((stub_entry == NULL
13805 || stub_entry->stub_type == ppc_stub_long_branch
13806 || stub_entry->stub_type == ppc_stub_plt_branch)
13807 && get_opd_info (sec) != NULL)
13809 /* The branch destination is the value of the opd entry. */
13810 bfd_vma off = (relocation + addend
13811 - sec->output_section->vma
13812 - sec->output_offset);
13813 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13814 if (dest != (bfd_vma) -1)
13818 reloc_dest = DEST_OPD;
13822 /* If the branch is out of reach we ought to have a long
13824 from = (rel->r_offset
13825 + input_section->output_offset
13826 + input_section->output_section->vma);
13828 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13832 if (stub_entry != NULL
13833 && (stub_entry->stub_type == ppc_stub_long_branch
13834 || stub_entry->stub_type == ppc_stub_plt_branch)
13835 && (r_type == R_PPC64_ADDR14_BRTAKEN
13836 || r_type == R_PPC64_ADDR14_BRNTAKEN
13837 || (relocation + addend - from + max_br_offset
13838 < 2 * max_br_offset)))
13839 /* Don't use the stub if this branch is in range. */
13842 if (stub_entry != NULL)
13844 /* Munge up the value and addend so that we call the stub
13845 rather than the procedure directly. */
13846 relocation = (stub_entry->stub_offset
13847 + stub_entry->stub_sec->output_offset
13848 + stub_entry->stub_sec->output_section->vma);
13850 reloc_dest = DEST_STUB;
13852 if ((stub_entry->stub_type == ppc_stub_plt_call
13853 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13854 && (ALWAYS_EMIT_R2SAVE
13855 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13856 && rel + 1 < relend
13857 && rel[1].r_offset == rel->r_offset + 4
13858 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13866 /* Set 'a' bit. This is 0b00010 in BO field for branch
13867 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13868 for branch on CTR insns (BO == 1a00t or 1a01t). */
13869 if ((insn & (0x14 << 21)) == (0x04 << 21))
13870 insn |= 0x02 << 21;
13871 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13872 insn |= 0x08 << 21;
13878 /* Invert 'y' bit if not the default. */
13879 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13880 insn ^= 0x01 << 21;
13883 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13886 /* NOP out calls to undefined weak functions.
13887 We can thus call a weak function without first
13888 checking whether the function is defined. */
13890 && h->elf.root.type == bfd_link_hash_undefweak
13891 && h->elf.dynindx == -1
13892 && r_type == R_PPC64_REL24
13896 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13902 /* Set `addend'. */
13907 info->callbacks->einfo
13908 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13909 input_bfd, (int) r_type, sym_name);
13911 bfd_set_error (bfd_error_bad_value);
13917 case R_PPC64_TLSGD:
13918 case R_PPC64_TLSLD:
13919 case R_PPC64_TOCSAVE:
13920 case R_PPC64_GNU_VTINHERIT:
13921 case R_PPC64_GNU_VTENTRY:
13924 /* GOT16 relocations. Like an ADDR16 using the symbol's
13925 address in the GOT as relocation value instead of the
13926 symbol's value itself. Also, create a GOT entry for the
13927 symbol and put the symbol value there. */
13928 case R_PPC64_GOT_TLSGD16:
13929 case R_PPC64_GOT_TLSGD16_LO:
13930 case R_PPC64_GOT_TLSGD16_HI:
13931 case R_PPC64_GOT_TLSGD16_HA:
13932 tls_type = TLS_TLS | TLS_GD;
13935 case R_PPC64_GOT_TLSLD16:
13936 case R_PPC64_GOT_TLSLD16_LO:
13937 case R_PPC64_GOT_TLSLD16_HI:
13938 case R_PPC64_GOT_TLSLD16_HA:
13939 tls_type = TLS_TLS | TLS_LD;
13942 case R_PPC64_GOT_TPREL16_DS:
13943 case R_PPC64_GOT_TPREL16_LO_DS:
13944 case R_PPC64_GOT_TPREL16_HI:
13945 case R_PPC64_GOT_TPREL16_HA:
13946 tls_type = TLS_TLS | TLS_TPREL;
13949 case R_PPC64_GOT_DTPREL16_DS:
13950 case R_PPC64_GOT_DTPREL16_LO_DS:
13951 case R_PPC64_GOT_DTPREL16_HI:
13952 case R_PPC64_GOT_DTPREL16_HA:
13953 tls_type = TLS_TLS | TLS_DTPREL;
13956 case R_PPC64_GOT16:
13957 case R_PPC64_GOT16_LO:
13958 case R_PPC64_GOT16_HI:
13959 case R_PPC64_GOT16_HA:
13960 case R_PPC64_GOT16_DS:
13961 case R_PPC64_GOT16_LO_DS:
13964 /* Relocation is to the entry for this symbol in the global
13969 unsigned long indx = 0;
13970 struct got_entry *ent;
13972 if (tls_type == (TLS_TLS | TLS_LD)
13974 || !h->elf.def_dynamic))
13975 ent = ppc64_tlsld_got (input_bfd);
13981 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13982 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13985 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13986 /* This is actually a static link, or it is a
13987 -Bsymbolic link and the symbol is defined
13988 locally, or the symbol was forced to be local
13989 because of a version file. */
13993 BFD_ASSERT (h->elf.dynindx != -1);
13994 indx = h->elf.dynindx;
13995 unresolved_reloc = FALSE;
13997 ent = h->elf.got.glist;
14001 if (local_got_ents == NULL)
14003 ent = local_got_ents[r_symndx];
14006 for (; ent != NULL; ent = ent->next)
14007 if (ent->addend == orig_rel.r_addend
14008 && ent->owner == input_bfd
14009 && ent->tls_type == tls_type)
14015 if (ent->is_indirect)
14016 ent = ent->got.ent;
14017 offp = &ent->got.offset;
14018 got = ppc64_elf_tdata (ent->owner)->got;
14022 /* The offset must always be a multiple of 8. We use the
14023 least significant bit to record whether we have already
14024 processed this entry. */
14026 if ((off & 1) != 0)
14030 /* Generate relocs for the dynamic linker, except in
14031 the case of TLSLD where we'll use one entry per
14039 ? h->elf.type == STT_GNU_IFUNC
14040 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14042 relgot = htab->elf.irelplt;
14043 else if ((info->shared || indx != 0)
14045 || (tls_type == (TLS_TLS | TLS_LD)
14046 && !h->elf.def_dynamic)
14047 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14048 || h->elf.root.type != bfd_link_hash_undefweak))
14049 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14050 if (relgot != NULL)
14052 outrel.r_offset = (got->output_section->vma
14053 + got->output_offset
14055 outrel.r_addend = addend;
14056 if (tls_type & (TLS_LD | TLS_GD))
14058 outrel.r_addend = 0;
14059 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14060 if (tls_type == (TLS_TLS | TLS_GD))
14062 loc = relgot->contents;
14063 loc += (relgot->reloc_count++
14064 * sizeof (Elf64_External_Rela));
14065 bfd_elf64_swap_reloca_out (output_bfd,
14067 outrel.r_offset += 8;
14068 outrel.r_addend = addend;
14070 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14073 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14074 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14075 else if (tls_type == (TLS_TLS | TLS_TPREL))
14076 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14077 else if (indx != 0)
14078 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14082 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14084 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14086 /* Write the .got section contents for the sake
14088 loc = got->contents + off;
14089 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14093 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14095 outrel.r_addend += relocation;
14096 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14097 outrel.r_addend -= htab->elf.tls_sec->vma;
14099 loc = relgot->contents;
14100 loc += (relgot->reloc_count++
14101 * sizeof (Elf64_External_Rela));
14102 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14105 /* Init the .got section contents here if we're not
14106 emitting a reloc. */
14109 relocation += addend;
14110 if (tls_type == (TLS_TLS | TLS_LD))
14112 else if (tls_type != 0)
14114 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14115 if (tls_type == (TLS_TLS | TLS_TPREL))
14116 relocation += DTP_OFFSET - TP_OFFSET;
14118 if (tls_type == (TLS_TLS | TLS_GD))
14120 bfd_put_64 (output_bfd, relocation,
14121 got->contents + off + 8);
14126 bfd_put_64 (output_bfd, relocation,
14127 got->contents + off);
14131 if (off >= (bfd_vma) -2)
14134 relocation = got->output_section->vma + got->output_offset + off;
14135 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14139 case R_PPC64_PLT16_HA:
14140 case R_PPC64_PLT16_HI:
14141 case R_PPC64_PLT16_LO:
14142 case R_PPC64_PLT32:
14143 case R_PPC64_PLT64:
14144 /* Relocation is to the entry for this symbol in the
14145 procedure linkage table. */
14147 /* Resolve a PLT reloc against a local symbol directly,
14148 without using the procedure linkage table. */
14152 /* It's possible that we didn't make a PLT entry for this
14153 symbol. This happens when statically linking PIC code,
14154 or when using -Bsymbolic. Go find a match if there is a
14156 if (htab->elf.splt != NULL)
14158 struct plt_entry *ent;
14159 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14160 if (ent->plt.offset != (bfd_vma) -1
14161 && ent->addend == orig_rel.r_addend)
14163 relocation = (htab->elf.splt->output_section->vma
14164 + htab->elf.splt->output_offset
14165 + ent->plt.offset);
14166 unresolved_reloc = FALSE;
14173 /* Relocation value is TOC base. */
14174 relocation = TOCstart;
14175 if (r_symndx == STN_UNDEF)
14176 relocation += htab->stub_group[input_section->id].toc_off;
14177 else if (unresolved_reloc)
14179 else if (sec != NULL && sec->id <= htab->top_id)
14180 relocation += htab->stub_group[sec->id].toc_off;
14182 unresolved_reloc = TRUE;
14185 /* TOC16 relocs. We want the offset relative to the TOC base,
14186 which is the address of the start of the TOC plus 0x8000.
14187 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14189 case R_PPC64_TOC16:
14190 case R_PPC64_TOC16_LO:
14191 case R_PPC64_TOC16_HI:
14192 case R_PPC64_TOC16_DS:
14193 case R_PPC64_TOC16_LO_DS:
14194 case R_PPC64_TOC16_HA:
14195 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14198 /* Relocate against the beginning of the section. */
14199 case R_PPC64_SECTOFF:
14200 case R_PPC64_SECTOFF_LO:
14201 case R_PPC64_SECTOFF_HI:
14202 case R_PPC64_SECTOFF_DS:
14203 case R_PPC64_SECTOFF_LO_DS:
14204 case R_PPC64_SECTOFF_HA:
14206 addend -= sec->output_section->vma;
14209 case R_PPC64_REL16:
14210 case R_PPC64_REL16_LO:
14211 case R_PPC64_REL16_HI:
14212 case R_PPC64_REL16_HA:
14215 case R_PPC64_REL14:
14216 case R_PPC64_REL14_BRNTAKEN:
14217 case R_PPC64_REL14_BRTAKEN:
14218 case R_PPC64_REL24:
14221 case R_PPC64_TPREL16:
14222 case R_PPC64_TPREL16_LO:
14223 case R_PPC64_TPREL16_HI:
14224 case R_PPC64_TPREL16_HA:
14225 case R_PPC64_TPREL16_DS:
14226 case R_PPC64_TPREL16_LO_DS:
14227 case R_PPC64_TPREL16_HIGH:
14228 case R_PPC64_TPREL16_HIGHA:
14229 case R_PPC64_TPREL16_HIGHER:
14230 case R_PPC64_TPREL16_HIGHERA:
14231 case R_PPC64_TPREL16_HIGHEST:
14232 case R_PPC64_TPREL16_HIGHESTA:
14234 && h->elf.root.type == bfd_link_hash_undefweak
14235 && h->elf.dynindx == -1)
14237 /* Make this relocation against an undefined weak symbol
14238 resolve to zero. This is really just a tweak, since
14239 code using weak externs ought to check that they are
14240 defined before using them. */
14241 bfd_byte *p = contents + rel->r_offset - d_offset;
14243 insn = bfd_get_32 (output_bfd, p);
14244 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14246 bfd_put_32 (output_bfd, insn, p);
14249 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14251 /* The TPREL16 relocs shouldn't really be used in shared
14252 libs as they will result in DT_TEXTREL being set, but
14253 support them anyway. */
14257 case R_PPC64_DTPREL16:
14258 case R_PPC64_DTPREL16_LO:
14259 case R_PPC64_DTPREL16_HI:
14260 case R_PPC64_DTPREL16_HA:
14261 case R_PPC64_DTPREL16_DS:
14262 case R_PPC64_DTPREL16_LO_DS:
14263 case R_PPC64_DTPREL16_HIGH:
14264 case R_PPC64_DTPREL16_HIGHA:
14265 case R_PPC64_DTPREL16_HIGHER:
14266 case R_PPC64_DTPREL16_HIGHERA:
14267 case R_PPC64_DTPREL16_HIGHEST:
14268 case R_PPC64_DTPREL16_HIGHESTA:
14269 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14272 case R_PPC64_ADDR64_LOCAL:
14273 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14278 case R_PPC64_DTPMOD64:
14283 case R_PPC64_TPREL64:
14284 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14287 case R_PPC64_DTPREL64:
14288 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14291 /* Relocations that may need to be propagated if this is a
14293 case R_PPC64_REL30:
14294 case R_PPC64_REL32:
14295 case R_PPC64_REL64:
14296 case R_PPC64_ADDR14:
14297 case R_PPC64_ADDR14_BRNTAKEN:
14298 case R_PPC64_ADDR14_BRTAKEN:
14299 case R_PPC64_ADDR16:
14300 case R_PPC64_ADDR16_DS:
14301 case R_PPC64_ADDR16_HA:
14302 case R_PPC64_ADDR16_HI:
14303 case R_PPC64_ADDR16_HIGH:
14304 case R_PPC64_ADDR16_HIGHA:
14305 case R_PPC64_ADDR16_HIGHER:
14306 case R_PPC64_ADDR16_HIGHERA:
14307 case R_PPC64_ADDR16_HIGHEST:
14308 case R_PPC64_ADDR16_HIGHESTA:
14309 case R_PPC64_ADDR16_LO:
14310 case R_PPC64_ADDR16_LO_DS:
14311 case R_PPC64_ADDR24:
14312 case R_PPC64_ADDR32:
14313 case R_PPC64_ADDR64:
14314 case R_PPC64_UADDR16:
14315 case R_PPC64_UADDR32:
14316 case R_PPC64_UADDR64:
14318 if ((input_section->flags & SEC_ALLOC) == 0)
14321 if (NO_OPD_RELOCS && is_opd)
14326 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14327 || h->elf.root.type != bfd_link_hash_undefweak)
14328 && (must_be_dyn_reloc (info, r_type)
14329 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14330 || (ELIMINATE_COPY_RELOCS
14333 && h->elf.dynindx != -1
14334 && !h->elf.non_got_ref
14335 && !h->elf.def_regular)
14338 ? h->elf.type == STT_GNU_IFUNC
14339 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14341 bfd_boolean skip, relocate;
14345 /* When generating a dynamic object, these relocations
14346 are copied into the output file to be resolved at run
14352 out_off = _bfd_elf_section_offset (output_bfd, info,
14353 input_section, rel->r_offset);
14354 if (out_off == (bfd_vma) -1)
14356 else if (out_off == (bfd_vma) -2)
14357 skip = TRUE, relocate = TRUE;
14358 out_off += (input_section->output_section->vma
14359 + input_section->output_offset);
14360 outrel.r_offset = out_off;
14361 outrel.r_addend = rel->r_addend;
14363 /* Optimize unaligned reloc use. */
14364 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14365 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14366 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14367 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14368 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14369 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14370 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14371 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14372 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14375 memset (&outrel, 0, sizeof outrel);
14376 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14378 && r_type != R_PPC64_TOC)
14380 BFD_ASSERT (h->elf.dynindx != -1);
14381 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14385 /* This symbol is local, or marked to become local,
14386 or this is an opd section reloc which must point
14387 at a local function. */
14388 outrel.r_addend += relocation;
14389 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14391 if (is_opd && h != NULL)
14393 /* Lie about opd entries. This case occurs
14394 when building shared libraries and we
14395 reference a function in another shared
14396 lib. The same thing happens for a weak
14397 definition in an application that's
14398 overridden by a strong definition in a
14399 shared lib. (I believe this is a generic
14400 bug in binutils handling of weak syms.)
14401 In these cases we won't use the opd
14402 entry in this lib. */
14403 unresolved_reloc = FALSE;
14406 && r_type == R_PPC64_ADDR64
14408 ? h->elf.type == STT_GNU_IFUNC
14409 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14410 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14413 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14415 /* We need to relocate .opd contents for ld.so.
14416 Prelink also wants simple and consistent rules
14417 for relocs. This make all RELATIVE relocs have
14418 *r_offset equal to r_addend. */
14427 ? h->elf.type == STT_GNU_IFUNC
14428 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14430 info->callbacks->einfo
14431 (_("%P: %H: %s for indirect "
14432 "function `%T' unsupported\n"),
14433 input_bfd, input_section, rel->r_offset,
14434 ppc64_elf_howto_table[r_type]->name,
14438 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14440 else if (sec == NULL || sec->owner == NULL)
14442 bfd_set_error (bfd_error_bad_value);
14449 osec = sec->output_section;
14450 indx = elf_section_data (osec)->dynindx;
14454 if ((osec->flags & SEC_READONLY) == 0
14455 && htab->elf.data_index_section != NULL)
14456 osec = htab->elf.data_index_section;
14458 osec = htab->elf.text_index_section;
14459 indx = elf_section_data (osec)->dynindx;
14461 BFD_ASSERT (indx != 0);
14463 /* We are turning this relocation into one
14464 against a section symbol, so subtract out
14465 the output section's address but not the
14466 offset of the input section in the output
14468 outrel.r_addend -= osec->vma;
14471 outrel.r_info = ELF64_R_INFO (indx, r_type);
14475 sreloc = elf_section_data (input_section)->sreloc;
14477 ? h->elf.type == STT_GNU_IFUNC
14478 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14479 sreloc = htab->elf.irelplt;
14480 if (sreloc == NULL)
14483 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14486 loc = sreloc->contents;
14487 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14488 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14490 /* If this reloc is against an external symbol, it will
14491 be computed at runtime, so there's no need to do
14492 anything now. However, for the sake of prelink ensure
14493 that the section contents are a known value. */
14496 unresolved_reloc = FALSE;
14497 /* The value chosen here is quite arbitrary as ld.so
14498 ignores section contents except for the special
14499 case of .opd where the contents might be accessed
14500 before relocation. Choose zero, as that won't
14501 cause reloc overflow. */
14504 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14505 to improve backward compatibility with older
14507 if (r_type == R_PPC64_ADDR64)
14508 addend = outrel.r_addend;
14509 /* Adjust pc_relative relocs to have zero in *r_offset. */
14510 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14511 addend = (input_section->output_section->vma
14512 + input_section->output_offset
14519 case R_PPC64_GLOB_DAT:
14520 case R_PPC64_JMP_SLOT:
14521 case R_PPC64_JMP_IREL:
14522 case R_PPC64_RELATIVE:
14523 /* We shouldn't ever see these dynamic relocs in relocatable
14525 /* Fall through. */
14527 case R_PPC64_PLTGOT16:
14528 case R_PPC64_PLTGOT16_DS:
14529 case R_PPC64_PLTGOT16_HA:
14530 case R_PPC64_PLTGOT16_HI:
14531 case R_PPC64_PLTGOT16_LO:
14532 case R_PPC64_PLTGOT16_LO_DS:
14533 case R_PPC64_PLTREL32:
14534 case R_PPC64_PLTREL64:
14535 /* These ones haven't been implemented yet. */
14537 info->callbacks->einfo
14538 (_("%P: %B: %s is not supported for `%T'\n"),
14540 ppc64_elf_howto_table[r_type]->name, sym_name);
14542 bfd_set_error (bfd_error_invalid_operation);
14547 /* Multi-instruction sequences that access the TOC can be
14548 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14549 to nop; addi rb,r2,x; */
14555 case R_PPC64_GOT_TLSLD16_HI:
14556 case R_PPC64_GOT_TLSGD16_HI:
14557 case R_PPC64_GOT_TPREL16_HI:
14558 case R_PPC64_GOT_DTPREL16_HI:
14559 case R_PPC64_GOT16_HI:
14560 case R_PPC64_TOC16_HI:
14561 /* These relocs would only be useful if building up an
14562 offset to later add to r2, perhaps in an indexed
14563 addressing mode instruction. Don't try to optimize.
14564 Unfortunately, the possibility of someone building up an
14565 offset like this or even with the HA relocs, means that
14566 we need to check the high insn when optimizing the low
14570 case R_PPC64_GOT_TLSLD16_HA:
14571 case R_PPC64_GOT_TLSGD16_HA:
14572 case R_PPC64_GOT_TPREL16_HA:
14573 case R_PPC64_GOT_DTPREL16_HA:
14574 case R_PPC64_GOT16_HA:
14575 case R_PPC64_TOC16_HA:
14576 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14577 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14579 bfd_byte *p = contents + (rel->r_offset & ~3);
14580 bfd_put_32 (input_bfd, NOP, p);
14584 case R_PPC64_GOT_TLSLD16_LO:
14585 case R_PPC64_GOT_TLSGD16_LO:
14586 case R_PPC64_GOT_TPREL16_LO_DS:
14587 case R_PPC64_GOT_DTPREL16_LO_DS:
14588 case R_PPC64_GOT16_LO:
14589 case R_PPC64_GOT16_LO_DS:
14590 case R_PPC64_TOC16_LO:
14591 case R_PPC64_TOC16_LO_DS:
14592 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14593 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14595 bfd_byte *p = contents + (rel->r_offset & ~3);
14596 insn = bfd_get_32 (input_bfd, p);
14597 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14599 /* Transform addic to addi when we change reg. */
14600 insn &= ~((0x3f << 26) | (0x1f << 16));
14601 insn |= (14u << 26) | (2 << 16);
14605 insn &= ~(0x1f << 16);
14608 bfd_put_32 (input_bfd, insn, p);
14613 /* Do any further special processing. */
14614 howto = ppc64_elf_howto_table[(int) r_type];
14620 case R_PPC64_REL16_HA:
14621 case R_PPC64_ADDR16_HA:
14622 case R_PPC64_ADDR16_HIGHA:
14623 case R_PPC64_ADDR16_HIGHERA:
14624 case R_PPC64_ADDR16_HIGHESTA:
14625 case R_PPC64_TOC16_HA:
14626 case R_PPC64_SECTOFF_HA:
14627 case R_PPC64_TPREL16_HA:
14628 case R_PPC64_TPREL16_HIGHA:
14629 case R_PPC64_TPREL16_HIGHERA:
14630 case R_PPC64_TPREL16_HIGHESTA:
14631 case R_PPC64_DTPREL16_HA:
14632 case R_PPC64_DTPREL16_HIGHA:
14633 case R_PPC64_DTPREL16_HIGHERA:
14634 case R_PPC64_DTPREL16_HIGHESTA:
14635 /* It's just possible that this symbol is a weak symbol
14636 that's not actually defined anywhere. In that case,
14637 'sec' would be NULL, and we should leave the symbol
14638 alone (it will be set to zero elsewhere in the link). */
14643 case R_PPC64_GOT16_HA:
14644 case R_PPC64_PLTGOT16_HA:
14645 case R_PPC64_PLT16_HA:
14646 case R_PPC64_GOT_TLSGD16_HA:
14647 case R_PPC64_GOT_TLSLD16_HA:
14648 case R_PPC64_GOT_TPREL16_HA:
14649 case R_PPC64_GOT_DTPREL16_HA:
14650 /* Add 0x10000 if sign bit in 0:15 is set.
14651 Bits 0:15 are not used. */
14655 case R_PPC64_ADDR16_DS:
14656 case R_PPC64_ADDR16_LO_DS:
14657 case R_PPC64_GOT16_DS:
14658 case R_PPC64_GOT16_LO_DS:
14659 case R_PPC64_PLT16_LO_DS:
14660 case R_PPC64_SECTOFF_DS:
14661 case R_PPC64_SECTOFF_LO_DS:
14662 case R_PPC64_TOC16_DS:
14663 case R_PPC64_TOC16_LO_DS:
14664 case R_PPC64_PLTGOT16_DS:
14665 case R_PPC64_PLTGOT16_LO_DS:
14666 case R_PPC64_GOT_TPREL16_DS:
14667 case R_PPC64_GOT_TPREL16_LO_DS:
14668 case R_PPC64_GOT_DTPREL16_DS:
14669 case R_PPC64_GOT_DTPREL16_LO_DS:
14670 case R_PPC64_TPREL16_DS:
14671 case R_PPC64_TPREL16_LO_DS:
14672 case R_PPC64_DTPREL16_DS:
14673 case R_PPC64_DTPREL16_LO_DS:
14674 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14676 /* If this reloc is against an lq insn, then the value must be
14677 a multiple of 16. This is somewhat of a hack, but the
14678 "correct" way to do this by defining _DQ forms of all the
14679 _DS relocs bloats all reloc switches in this file. It
14680 doesn't seem to make much sense to use any of these relocs
14681 in data, so testing the insn should be safe. */
14682 if ((insn & (0x3f << 26)) == (56u << 26))
14684 if (((relocation + addend) & mask) != 0)
14686 info->callbacks->einfo
14687 (_("%P: %H: error: %s not a multiple of %u\n"),
14688 input_bfd, input_section, rel->r_offset,
14691 bfd_set_error (bfd_error_bad_value);
14698 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14699 because such sections are not SEC_ALLOC and thus ld.so will
14700 not process them. */
14701 if (unresolved_reloc
14702 && !((input_section->flags & SEC_DEBUGGING) != 0
14703 && h->elf.def_dynamic)
14704 && _bfd_elf_section_offset (output_bfd, info, input_section,
14705 rel->r_offset) != (bfd_vma) -1)
14707 info->callbacks->einfo
14708 (_("%P: %H: unresolvable %s against `%T'\n"),
14709 input_bfd, input_section, rel->r_offset,
14711 h->elf.root.root.string);
14715 /* 16-bit fields in insns mostly have signed values, but a
14716 few insns have 16-bit unsigned values. Really, we should
14717 have different reloc types. */
14718 if (howto->complain_on_overflow != complain_overflow_dont
14719 && howto->dst_mask == 0xffff
14720 && (input_section->flags & SEC_CODE) != 0)
14722 enum complain_overflow complain = complain_overflow_signed;
14724 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14725 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14726 complain = complain_overflow_bitfield;
14727 else if (howto->rightshift == 0
14728 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14729 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14730 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14731 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14732 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14733 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14734 complain = complain_overflow_unsigned;
14735 if (howto->complain_on_overflow != complain)
14737 alt_howto = *howto;
14738 alt_howto.complain_on_overflow = complain;
14739 howto = &alt_howto;
14743 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14744 rel->r_offset, relocation, addend);
14746 if (r != bfd_reloc_ok)
14748 char *more_info = NULL;
14749 const char *reloc_name = howto->name;
14751 if (reloc_dest != DEST_NORMAL)
14753 more_info = bfd_malloc (strlen (reloc_name) + 8);
14754 if (more_info != NULL)
14756 strcpy (more_info, reloc_name);
14757 strcat (more_info, (reloc_dest == DEST_OPD
14758 ? " (OPD)" : " (stub)"));
14759 reloc_name = more_info;
14763 if (r == bfd_reloc_overflow)
14768 && h->elf.root.type == bfd_link_hash_undefweak
14769 && howto->pc_relative)
14771 /* Assume this is a call protected by other code that
14772 detects the symbol is undefined. If this is the case,
14773 we can safely ignore the overflow. If not, the
14774 program is hosed anyway, and a little warning isn't
14780 if (!((*info->callbacks->reloc_overflow)
14781 (info, &h->elf.root, sym_name,
14782 reloc_name, orig_rel.r_addend,
14783 input_bfd, input_section, rel->r_offset)))
14788 info->callbacks->einfo
14789 (_("%P: %H: %s against `%T': error %d\n"),
14790 input_bfd, input_section, rel->r_offset,
14791 reloc_name, sym_name, (int) r);
14794 if (more_info != NULL)
14799 /* If we're emitting relocations, then shortly after this function
14800 returns, reloc offsets and addends for this section will be
14801 adjusted. Worse, reloc symbol indices will be for the output
14802 file rather than the input. Save a copy of the relocs for
14803 opd_entry_value. */
14804 if (is_opd && (info->emitrelocations || info->relocatable))
14807 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14808 rel = bfd_alloc (input_bfd, amt);
14809 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14810 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14813 memcpy (rel, relocs, amt);
14818 /* Adjust the value of any local symbols in opd sections. */
14821 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14822 const char *name ATTRIBUTE_UNUSED,
14823 Elf_Internal_Sym *elfsym,
14824 asection *input_sec,
14825 struct elf_link_hash_entry *h)
14827 struct _opd_sec_data *opd;
14834 opd = get_opd_info (input_sec);
14835 if (opd == NULL || opd->adjust == NULL)
14838 value = elfsym->st_value - input_sec->output_offset;
14839 if (!info->relocatable)
14840 value -= input_sec->output_section->vma;
14842 adjust = opd->adjust[value / 8];
14846 elfsym->st_value += adjust;
14850 /* Finish up dynamic symbol handling. We set the contents of various
14851 dynamic sections here. */
14854 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14855 struct bfd_link_info *info,
14856 struct elf_link_hash_entry *h,
14857 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14859 struct ppc_link_hash_table *htab;
14860 struct plt_entry *ent;
14861 Elf_Internal_Rela rela;
14864 htab = ppc_hash_table (info);
14868 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14869 if (ent->plt.offset != (bfd_vma) -1)
14871 /* This symbol has an entry in the procedure linkage
14872 table. Set it up. */
14873 if (!htab->elf.dynamic_sections_created
14874 || h->dynindx == -1)
14876 BFD_ASSERT (h->type == STT_GNU_IFUNC
14878 && (h->root.type == bfd_link_hash_defined
14879 || h->root.type == bfd_link_hash_defweak));
14880 rela.r_offset = (htab->elf.iplt->output_section->vma
14881 + htab->elf.iplt->output_offset
14882 + ent->plt.offset);
14884 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14886 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14887 rela.r_addend = (h->root.u.def.value
14888 + h->root.u.def.section->output_offset
14889 + h->root.u.def.section->output_section->vma
14891 loc = (htab->elf.irelplt->contents
14892 + (htab->elf.irelplt->reloc_count++
14893 * sizeof (Elf64_External_Rela)));
14897 rela.r_offset = (htab->elf.splt->output_section->vma
14898 + htab->elf.splt->output_offset
14899 + ent->plt.offset);
14900 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14901 rela.r_addend = ent->addend;
14902 loc = (htab->elf.srelplt->contents
14903 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14904 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14906 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14908 if (!htab->opd_abi)
14910 if (!h->def_regular)
14912 /* Mark the symbol as undefined, rather than as
14913 defined in glink. Leave the value if there were
14914 any relocations where pointer equality matters
14915 (this is a clue for the dynamic linker, to make
14916 function pointer comparisons work between an
14917 application and shared library), otherwise set it
14919 sym->st_shndx = SHN_UNDEF;
14920 if (!h->pointer_equality_needed)
14922 else if (!h->ref_regular_nonweak)
14924 /* This breaks function pointer comparisons, but
14925 that is better than breaking tests for a NULL
14926 function pointer. */
14935 /* This symbol needs a copy reloc. Set it up. */
14937 if (h->dynindx == -1
14938 || (h->root.type != bfd_link_hash_defined
14939 && h->root.type != bfd_link_hash_defweak)
14940 || htab->relbss == NULL)
14943 rela.r_offset = (h->root.u.def.value
14944 + h->root.u.def.section->output_section->vma
14945 + h->root.u.def.section->output_offset);
14946 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14948 loc = htab->relbss->contents;
14949 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14950 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14956 /* Used to decide how to sort relocs in an optimal manner for the
14957 dynamic linker, before writing them out. */
14959 static enum elf_reloc_type_class
14960 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14961 const asection *rel_sec,
14962 const Elf_Internal_Rela *rela)
14964 enum elf_ppc64_reloc_type r_type;
14965 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14967 if (rel_sec == htab->elf.irelplt)
14968 return reloc_class_ifunc;
14970 r_type = ELF64_R_TYPE (rela->r_info);
14973 case R_PPC64_RELATIVE:
14974 return reloc_class_relative;
14975 case R_PPC64_JMP_SLOT:
14976 return reloc_class_plt;
14978 return reloc_class_copy;
14980 return reloc_class_normal;
14984 /* Finish up the dynamic sections. */
14987 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14988 struct bfd_link_info *info)
14990 struct ppc_link_hash_table *htab;
14994 htab = ppc_hash_table (info);
14998 dynobj = htab->elf.dynobj;
14999 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15001 if (htab->elf.dynamic_sections_created)
15003 Elf64_External_Dyn *dyncon, *dynconend;
15005 if (sdyn == NULL || htab->elf.sgot == NULL)
15008 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15009 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15010 for (; dyncon < dynconend; dyncon++)
15012 Elf_Internal_Dyn dyn;
15015 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15022 case DT_PPC64_GLINK:
15024 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15025 /* We stupidly defined DT_PPC64_GLINK to be the start
15026 of glink rather than the first entry point, which is
15027 what ld.so needs, and now have a bigger stub to
15028 support automatic multiple TOCs. */
15029 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15033 s = bfd_get_section_by_name (output_bfd, ".opd");
15036 dyn.d_un.d_ptr = s->vma;
15040 if (htab->do_multi_toc && htab->multi_toc_needed)
15041 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15044 case DT_PPC64_OPDSZ:
15045 s = bfd_get_section_by_name (output_bfd, ".opd");
15048 dyn.d_un.d_val = s->size;
15052 s = htab->elf.splt;
15053 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15057 s = htab->elf.srelplt;
15058 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15062 dyn.d_un.d_val = htab->elf.srelplt->size;
15066 /* Don't count procedure linkage table relocs in the
15067 overall reloc count. */
15068 s = htab->elf.srelplt;
15071 dyn.d_un.d_val -= s->size;
15075 /* We may not be using the standard ELF linker script.
15076 If .rela.plt is the first .rela section, we adjust
15077 DT_RELA to not include it. */
15078 s = htab->elf.srelplt;
15081 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15083 dyn.d_un.d_ptr += s->size;
15087 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15091 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15093 /* Fill in the first entry in the global offset table.
15094 We use it to hold the link-time TOCbase. */
15095 bfd_put_64 (output_bfd,
15096 elf_gp (output_bfd) + TOC_BASE_OFF,
15097 htab->elf.sgot->contents);
15099 /* Set .got entry size. */
15100 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15103 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15105 /* Set .plt entry size. */
15106 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15107 = PLT_ENTRY_SIZE (htab);
15110 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15111 brlt ourselves if emitrelocations. */
15112 if (htab->brlt != NULL
15113 && htab->brlt->reloc_count != 0
15114 && !_bfd_elf_link_output_relocs (output_bfd,
15116 elf_section_data (htab->brlt)->rela.hdr,
15117 elf_section_data (htab->brlt)->relocs,
15121 if (htab->glink != NULL
15122 && htab->glink->reloc_count != 0
15123 && !_bfd_elf_link_output_relocs (output_bfd,
15125 elf_section_data (htab->glink)->rela.hdr,
15126 elf_section_data (htab->glink)->relocs,
15130 if (htab->glink_eh_frame != NULL
15131 && htab->glink_eh_frame->size != 0)
15135 asection *stub_sec;
15137 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15138 for (stub_sec = htab->params->stub_bfd->sections;
15140 stub_sec = stub_sec->next)
15141 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15147 /* Offset to stub section. */
15148 val = (stub_sec->output_section->vma
15149 + stub_sec->output_offset);
15150 val -= (htab->glink_eh_frame->output_section->vma
15151 + htab->glink_eh_frame->output_offset
15152 + (p - htab->glink_eh_frame->contents));
15153 if (val + 0x80000000 > 0xffffffff)
15155 info->callbacks->einfo
15156 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15160 bfd_put_32 (dynobj, val, p);
15162 /* stub section size. */
15164 /* Augmentation. */
15169 if (htab->glink != NULL && htab->glink->size != 0)
15175 /* Offset to .glink. */
15176 val = (htab->glink->output_section->vma
15177 + htab->glink->output_offset
15179 val -= (htab->glink_eh_frame->output_section->vma
15180 + htab->glink_eh_frame->output_offset
15181 + (p - htab->glink_eh_frame->contents));
15182 if (val + 0x80000000 > 0xffffffff)
15184 info->callbacks->einfo
15185 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15186 htab->glink->name);
15189 bfd_put_32 (dynobj, val, p);
15193 /* Augmentation. */
15199 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15200 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15201 htab->glink_eh_frame,
15202 htab->glink_eh_frame->contents))
15206 /* We need to handle writing out multiple GOT sections ourselves,
15207 since we didn't add them to DYNOBJ. We know dynobj is the first
15209 while ((dynobj = dynobj->link.next) != NULL)
15213 if (!is_ppc64_elf (dynobj))
15216 s = ppc64_elf_tdata (dynobj)->got;
15219 && s->output_section != bfd_abs_section_ptr
15220 && !bfd_set_section_contents (output_bfd, s->output_section,
15221 s->contents, s->output_offset,
15224 s = ppc64_elf_tdata (dynobj)->relgot;
15227 && s->output_section != bfd_abs_section_ptr
15228 && !bfd_set_section_contents (output_bfd, s->output_section,
15229 s->contents, s->output_offset,
15237 #include "elf64-target.h"
15239 /* FreeBSD support */
15241 #undef TARGET_LITTLE_SYM
15242 #undef TARGET_LITTLE_NAME
15244 #undef TARGET_BIG_SYM
15245 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15246 #undef TARGET_BIG_NAME
15247 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15250 #define ELF_OSABI ELFOSABI_FREEBSD
15253 #define elf64_bed elf64_powerpc_fbsd_bed
15255 #include "elf64-target.h"