1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2015 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 0x10000
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 3, /* 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 and some spares since opd entries may be either 16 or 24 bytes. */
2959 #define OPD_NDX(OFF) ((OFF) >> 4)
2960 struct _opd_sec_data
2962 /* Points to the function code section for local opd entries. */
2963 asection **func_sec;
2965 /* After editing .opd, adjust references to opd local syms. */
2969 /* An array for toc sections, indexed by offset/8. */
2970 struct _toc_sec_data
2972 /* Specifies the relocation symbol index used at a given toc offset. */
2975 /* And the relocation addend. */
2980 enum _ppc64_sec_type sec_type:2;
2982 /* Flag set when small branches are detected. Used to
2983 select suitable defaults for the stub group size. */
2984 unsigned int has_14bit_branch:1;
2987 #define ppc64_elf_section_data(sec) \
2988 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2991 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2993 if (!sec->used_by_bfd)
2995 struct _ppc64_elf_section_data *sdata;
2996 bfd_size_type amt = sizeof (*sdata);
2998 sdata = bfd_zalloc (abfd, amt);
3001 sec->used_by_bfd = sdata;
3004 return _bfd_elf_new_section_hook (abfd, sec);
3007 static struct _opd_sec_data *
3008 get_opd_info (asection * sec)
3011 && ppc64_elf_section_data (sec) != NULL
3012 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3013 return &ppc64_elf_section_data (sec)->u.opd;
3017 /* Parameters for the qsort hook. */
3018 static bfd_boolean synthetic_relocatable;
3020 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3023 compare_symbols (const void *ap, const void *bp)
3025 const asymbol *a = * (const asymbol **) ap;
3026 const asymbol *b = * (const asymbol **) bp;
3028 /* Section symbols first. */
3029 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3031 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3034 /* then .opd symbols. */
3035 if (strcmp (a->section->name, ".opd") == 0
3036 && strcmp (b->section->name, ".opd") != 0)
3038 if (strcmp (a->section->name, ".opd") != 0
3039 && strcmp (b->section->name, ".opd") == 0)
3042 /* then other code symbols. */
3043 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 == (SEC_CODE | SEC_ALLOC)
3045 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3046 != (SEC_CODE | SEC_ALLOC))
3049 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC)
3051 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3052 == (SEC_CODE | SEC_ALLOC))
3055 if (synthetic_relocatable)
3057 if (a->section->id < b->section->id)
3060 if (a->section->id > b->section->id)
3064 if (a->value + a->section->vma < b->value + b->section->vma)
3067 if (a->value + a->section->vma > b->value + b->section->vma)
3070 /* For syms with the same value, prefer strong dynamic global function
3071 syms over other syms. */
3072 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3075 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3078 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3081 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3084 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3087 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3090 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3093 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3099 /* Search SYMS for a symbol of the given VALUE. */
3102 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3110 mid = (lo + hi) >> 1;
3111 if (syms[mid]->value + syms[mid]->section->vma < value)
3113 else if (syms[mid]->value + syms[mid]->section->vma > value)
3123 mid = (lo + hi) >> 1;
3124 if (syms[mid]->section->id < id)
3126 else if (syms[mid]->section->id > id)
3128 else if (syms[mid]->value < value)
3130 else if (syms[mid]->value > value)
3140 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3142 bfd_vma vma = *(bfd_vma *) ptr;
3143 return ((section->flags & SEC_ALLOC) != 0
3144 && section->vma <= vma
3145 && vma < section->vma + section->size);
3148 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3149 entry syms. Also generate @plt symbols for the glink branch table. */
3152 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3153 long static_count, asymbol **static_syms,
3154 long dyn_count, asymbol **dyn_syms,
3161 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3162 asection *opd = NULL;
3163 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3165 int abi = abiversion (abfd);
3171 opd = bfd_get_section_by_name (abfd, ".opd");
3172 if (opd == NULL && abi == 1)
3176 symcount = static_count;
3178 symcount += dyn_count;
3182 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3186 if (!relocatable && static_count != 0 && dyn_count != 0)
3188 /* Use both symbol tables. */
3189 memcpy (syms, static_syms, static_count * sizeof (*syms));
3190 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3192 else if (!relocatable && static_count == 0)
3193 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3195 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3197 synthetic_relocatable = relocatable;
3198 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3200 if (!relocatable && symcount > 1)
3203 /* Trim duplicate syms, since we may have merged the normal and
3204 dynamic symbols. Actually, we only care about syms that have
3205 different values, so trim any with the same value. */
3206 for (i = 1, j = 1; i < symcount; ++i)
3207 if (syms[i - 1]->value + syms[i - 1]->section->vma
3208 != syms[i]->value + syms[i]->section->vma)
3209 syms[j++] = syms[i];
3214 if (strcmp (syms[i]->section->name, ".opd") == 0)
3218 for (; i < symcount; ++i)
3219 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3220 != (SEC_CODE | SEC_ALLOC))
3221 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 for (; i < symcount; ++i)
3226 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3230 for (; i < symcount; ++i)
3231 if (strcmp (syms[i]->section->name, ".opd") != 0)
3235 for (; i < symcount; ++i)
3236 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3237 != (SEC_CODE | SEC_ALLOC))
3245 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3250 if (opdsymend == secsymend)
3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3254 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3258 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3265 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3269 while (r < opd->relocation + relcount
3270 && r->address < syms[i]->value + opd->vma)
3273 if (r == opd->relocation + relcount)
3276 if (r->address != syms[i]->value + opd->vma)
3279 if (r->howto->type != R_PPC64_ADDR64)
3282 sym = *r->sym_ptr_ptr;
3283 if (!sym_exists_at (syms, opdsymend, symcount,
3284 sym->section->id, sym->value + r->addend))
3287 size += sizeof (asymbol);
3288 size += strlen (syms[i]->name) + 2;
3292 s = *ret = bfd_malloc (size);
3299 names = (char *) (s + count);
3301 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3305 while (r < opd->relocation + relcount
3306 && r->address < syms[i]->value + opd->vma)
3309 if (r == opd->relocation + relcount)
3312 if (r->address != syms[i]->value + opd->vma)
3315 if (r->howto->type != R_PPC64_ADDR64)
3318 sym = *r->sym_ptr_ptr;
3319 if (!sym_exists_at (syms, opdsymend, symcount,
3320 sym->section->id, sym->value + r->addend))
3325 s->flags |= BSF_SYNTHETIC;
3326 s->section = sym->section;
3327 s->value = sym->value + r->addend;
3330 len = strlen (syms[i]->name);
3331 memcpy (names, syms[i]->name, len + 1);
3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s->udata.p = syms[i];
3342 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3343 bfd_byte *contents = NULL;
3346 bfd_vma glink_vma = 0, resolv_vma = 0;
3347 asection *dynamic, *glink = NULL, *relplt = NULL;
3350 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3352 free_contents_and_exit:
3360 for (i = secsymend; i < opdsymend; ++i)
3364 /* Ignore bogus symbols. */
3365 if (syms[i]->value > opd->size - 8)
3368 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3369 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3372 size += sizeof (asymbol);
3373 size += strlen (syms[i]->name) + 2;
3377 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3379 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3381 bfd_byte *dynbuf, *extdyn, *extdynend;
3383 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3385 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3386 goto free_contents_and_exit;
3388 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3389 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3392 extdynend = extdyn + dynamic->size;
3393 for (; extdyn < extdynend; extdyn += extdynsize)
3395 Elf_Internal_Dyn dyn;
3396 (*swap_dyn_in) (abfd, extdyn, &dyn);
3398 if (dyn.d_tag == DT_NULL)
3401 if (dyn.d_tag == DT_PPC64_GLINK)
3403 /* The first glink stub starts at offset 32; see
3404 comment in ppc64_elf_finish_dynamic_sections. */
3405 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3406 /* The .glink section usually does not survive the final
3407 link; search for the section (usually .text) where the
3408 glink stubs now reside. */
3409 glink = bfd_sections_find_if (abfd, section_covers_vma,
3420 /* Determine __glink trampoline by reading the relative branch
3421 from the first glink stub. */
3423 unsigned int off = 0;
3425 while (bfd_get_section_contents (abfd, glink, buf,
3426 glink_vma + off - glink->vma, 4))
3428 unsigned int insn = bfd_get_32 (abfd, buf);
3430 if ((insn & ~0x3fffffc) == 0)
3432 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3441 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3443 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3446 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3447 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3448 goto free_contents_and_exit;
3450 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3451 size += plt_count * sizeof (asymbol);
3453 p = relplt->relocation;
3454 for (i = 0; i < plt_count; i++, p++)
3456 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3458 size += sizeof ("+0x") - 1 + 16;
3463 s = *ret = bfd_malloc (size);
3465 goto free_contents_and_exit;
3467 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3469 for (i = secsymend; i < opdsymend; ++i)
3473 if (syms[i]->value > opd->size - 8)
3476 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3477 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3481 asection *sec = abfd->sections;
3488 long mid = (lo + hi) >> 1;
3489 if (syms[mid]->section->vma < ent)
3491 else if (syms[mid]->section->vma > ent)
3495 sec = syms[mid]->section;
3500 if (lo >= hi && lo > codesecsym)
3501 sec = syms[lo - 1]->section;
3503 for (; sec != NULL; sec = sec->next)
3507 /* SEC_LOAD may not be set if SEC is from a separate debug
3509 if ((sec->flags & SEC_ALLOC) == 0)
3511 if ((sec->flags & SEC_CODE) != 0)
3514 s->flags |= BSF_SYNTHETIC;
3515 s->value = ent - s->section->vma;
3518 len = strlen (syms[i]->name);
3519 memcpy (names, syms[i]->name, len + 1);
3521 /* Have udata.p point back to the original symbol this
3522 synthetic symbol was derived from. */
3523 s->udata.p = syms[i];
3529 if (glink != NULL && relplt != NULL)
3533 /* Add a symbol for the main glink trampoline. */
3534 memset (s, 0, sizeof *s);
3536 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3538 s->value = resolv_vma - glink->vma;
3540 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3541 names += sizeof ("__glink_PLTresolve");
3546 /* FIXME: It would be very much nicer to put sym@plt on the
3547 stub rather than on the glink branch table entry. The
3548 objdump disassembler would then use a sensible symbol
3549 name on plt calls. The difficulty in doing so is
3550 a) finding the stubs, and,
3551 b) matching stubs against plt entries, and,
3552 c) there can be multiple stubs for a given plt entry.
3554 Solving (a) could be done by code scanning, but older
3555 ppc64 binaries used different stubs to current code.
3556 (b) is the tricky one since you need to known the toc
3557 pointer for at least one function that uses a pic stub to
3558 be able to calculate the plt address referenced.
3559 (c) means gdb would need to set multiple breakpoints (or
3560 find the glink branch itself) when setting breakpoints
3561 for pending shared library loads. */
3562 p = relplt->relocation;
3563 for (i = 0; i < plt_count; i++, p++)
3567 *s = **p->sym_ptr_ptr;
3568 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3569 we are defining a symbol, ensure one of them is set. */
3570 if ((s->flags & BSF_LOCAL) == 0)
3571 s->flags |= BSF_GLOBAL;
3572 s->flags |= BSF_SYNTHETIC;
3574 s->value = glink_vma - glink->vma;
3577 len = strlen ((*p->sym_ptr_ptr)->name);
3578 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3582 memcpy (names, "+0x", sizeof ("+0x") - 1);
3583 names += sizeof ("+0x") - 1;
3584 bfd_sprintf_vma (abfd, names, p->addend);
3585 names += strlen (names);
3587 memcpy (names, "@plt", sizeof ("@plt"));
3588 names += sizeof ("@plt");
3608 /* The following functions are specific to the ELF linker, while
3609 functions above are used generally. Those named ppc64_elf_* are
3610 called by the main ELF linker code. They appear in this file more
3611 or less in the order in which they are called. eg.
3612 ppc64_elf_check_relocs is called early in the link process,
3613 ppc64_elf_finish_dynamic_sections is one of the last functions
3616 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3617 functions have both a function code symbol and a function descriptor
3618 symbol. A call to foo in a relocatable object file looks like:
3625 The function definition in another object file might be:
3629 . .quad .TOC.@tocbase
3635 When the linker resolves the call during a static link, the branch
3636 unsurprisingly just goes to .foo and the .opd information is unused.
3637 If the function definition is in a shared library, things are a little
3638 different: The call goes via a plt call stub, the opd information gets
3639 copied to the plt, and the linker patches the nop.
3647 . std 2,40(1) # in practice, the call stub
3648 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3649 . addi 11,11,Lfoo@toc@l # this is the general idea
3657 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3659 The "reloc ()" notation is supposed to indicate that the linker emits
3660 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3663 What are the difficulties here? Well, firstly, the relocations
3664 examined by the linker in check_relocs are against the function code
3665 sym .foo, while the dynamic relocation in the plt is emitted against
3666 the function descriptor symbol, foo. Somewhere along the line, we need
3667 to carefully copy dynamic link information from one symbol to the other.
3668 Secondly, the generic part of the elf linker will make .foo a dynamic
3669 symbol as is normal for most other backends. We need foo dynamic
3670 instead, at least for an application final link. However, when
3671 creating a shared library containing foo, we need to have both symbols
3672 dynamic so that references to .foo are satisfied during the early
3673 stages of linking. Otherwise the linker might decide to pull in a
3674 definition from some other object, eg. a static library.
3676 Update: As of August 2004, we support a new convention. Function
3677 calls may use the function descriptor symbol, ie. "bl foo". This
3678 behaves exactly as "bl .foo". */
3680 /* Of those relocs that might be copied as dynamic relocs, this function
3681 selects those that must be copied when linking a shared library,
3682 even when the symbol is local. */
3685 must_be_dyn_reloc (struct bfd_link_info *info,
3686 enum elf_ppc64_reloc_type r_type)
3698 case R_PPC64_TPREL16:
3699 case R_PPC64_TPREL16_LO:
3700 case R_PPC64_TPREL16_HI:
3701 case R_PPC64_TPREL16_HA:
3702 case R_PPC64_TPREL16_DS:
3703 case R_PPC64_TPREL16_LO_DS:
3704 case R_PPC64_TPREL16_HIGH:
3705 case R_PPC64_TPREL16_HIGHA:
3706 case R_PPC64_TPREL16_HIGHER:
3707 case R_PPC64_TPREL16_HIGHERA:
3708 case R_PPC64_TPREL16_HIGHEST:
3709 case R_PPC64_TPREL16_HIGHESTA:
3710 case R_PPC64_TPREL64:
3711 return !info->executable;
3715 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3716 copying dynamic variables from a shared lib into an app's dynbss
3717 section, and instead use a dynamic relocation to point into the
3718 shared lib. With code that gcc generates, it's vital that this be
3719 enabled; In the PowerPC64 ABI, the address of a function is actually
3720 the address of a function descriptor, which resides in the .opd
3721 section. gcc uses the descriptor directly rather than going via the
3722 GOT as some other ABI's do, which means that initialized function
3723 pointers must reference the descriptor. Thus, a function pointer
3724 initialized to the address of a function in a shared library will
3725 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3726 redefines the function descriptor symbol to point to the copy. This
3727 presents a problem as a plt entry for that function is also
3728 initialized from the function descriptor symbol and the copy reloc
3729 may not be initialized first. */
3730 #define ELIMINATE_COPY_RELOCS 1
3732 /* Section name for stubs is the associated section name plus this
3734 #define STUB_SUFFIX ".stub"
3737 ppc_stub_long_branch:
3738 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3739 destination, but a 24 bit branch in a stub section will reach.
3742 ppc_stub_plt_branch:
3743 Similar to the above, but a 24 bit branch in the stub section won't
3744 reach its destination.
3745 . addis %r11,%r2,xxx@toc@ha
3746 . ld %r12,xxx@toc@l(%r11)
3751 Used to call a function in a shared library. If it so happens that
3752 the plt entry referenced crosses a 64k boundary, then an extra
3753 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3755 . addis %r11,%r2,xxx@toc@ha
3756 . ld %r12,xxx+0@toc@l(%r11)
3758 . ld %r2,xxx+8@toc@l(%r11)
3759 . ld %r11,xxx+16@toc@l(%r11)
3762 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3763 code to adjust the value and save r2 to support multiple toc sections.
3764 A ppc_stub_long_branch with an r2 offset looks like:
3766 . addis %r2,%r2,off@ha
3767 . addi %r2,%r2,off@l
3770 A ppc_stub_plt_branch with an r2 offset looks like:
3772 . addis %r11,%r2,xxx@toc@ha
3773 . ld %r12,xxx@toc@l(%r11)
3774 . addis %r2,%r2,off@ha
3775 . addi %r2,%r2,off@l
3779 In cases where the "addis" instruction would add zero, the "addis" is
3780 omitted and following instructions modified slightly in some cases.
3783 enum ppc_stub_type {
3785 ppc_stub_long_branch,
3786 ppc_stub_long_branch_r2off,
3787 ppc_stub_plt_branch,
3788 ppc_stub_plt_branch_r2off,
3790 ppc_stub_plt_call_r2save,
3791 ppc_stub_global_entry
3794 struct ppc_stub_hash_entry {
3796 /* Base hash table entry structure. */
3797 struct bfd_hash_entry root;
3799 enum ppc_stub_type stub_type;
3801 /* The stub section. */
3804 /* Offset within stub_sec of the beginning of this stub. */
3805 bfd_vma stub_offset;
3807 /* Given the symbol's value and its section we can determine its final
3808 value when building the stubs (so the stub knows where to jump. */
3809 bfd_vma target_value;
3810 asection *target_section;
3812 /* The symbol table entry, if any, that this was derived from. */
3813 struct ppc_link_hash_entry *h;
3814 struct plt_entry *plt_ent;
3816 /* Where this stub is being called from, or, in the case of combined
3817 stub sections, the first input section in the group. */
3820 /* Symbol st_other. */
3821 unsigned char other;
3824 struct ppc_branch_hash_entry {
3826 /* Base hash table entry structure. */
3827 struct bfd_hash_entry root;
3829 /* Offset within branch lookup table. */
3830 unsigned int offset;
3832 /* Generation marker. */
3836 /* Used to track dynamic relocations for local symbols. */
3837 struct ppc_dyn_relocs
3839 struct ppc_dyn_relocs *next;
3841 /* The input section of the reloc. */
3844 /* Total number of relocs copied for the input section. */
3845 unsigned int count : 31;
3847 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3848 unsigned int ifunc : 1;
3851 struct ppc_link_hash_entry
3853 struct elf_link_hash_entry elf;
3856 /* A pointer to the most recently used stub hash entry against this
3858 struct ppc_stub_hash_entry *stub_cache;
3860 /* A pointer to the next symbol starting with a '.' */
3861 struct ppc_link_hash_entry *next_dot_sym;
3864 /* Track dynamic relocs copied for this symbol. */
3865 struct elf_dyn_relocs *dyn_relocs;
3867 /* Link between function code and descriptor symbols. */
3868 struct ppc_link_hash_entry *oh;
3870 /* Flag function code and descriptor symbols. */
3871 unsigned int is_func:1;
3872 unsigned int is_func_descriptor:1;
3873 unsigned int fake:1;
3875 /* Whether global opd/toc sym has been adjusted or not.
3876 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3877 should be set for all globals defined in any opd/toc section. */
3878 unsigned int adjust_done:1;
3880 /* Set if we twiddled this symbol to weak at some stage. */
3881 unsigned int was_undefined:1;
3883 /* Contexts in which symbol is used in the GOT (or TOC).
3884 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3885 corresponding relocs are encountered during check_relocs.
3886 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3887 indicate the corresponding GOT entry type is not needed.
3888 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3889 a TPREL one. We use a separate flag rather than setting TPREL
3890 just for convenience in distinguishing the two cases. */
3891 #define TLS_GD 1 /* GD reloc. */
3892 #define TLS_LD 2 /* LD reloc. */
3893 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3894 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3895 #define TLS_TLS 16 /* Any TLS reloc. */
3896 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3897 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3898 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3899 unsigned char tls_mask;
3902 /* ppc64 ELF linker hash table. */
3904 struct ppc_link_hash_table
3906 struct elf_link_hash_table elf;
3908 /* The stub hash table. */
3909 struct bfd_hash_table stub_hash_table;
3911 /* Another hash table for plt_branch stubs. */
3912 struct bfd_hash_table branch_hash_table;
3914 /* Hash table for function prologue tocsave. */
3915 htab_t tocsave_htab;
3917 /* Various options and other info passed from the linker. */
3918 struct ppc64_elf_params *params;
3920 /* Array to keep track of which stub sections have been created, and
3921 information on stub grouping. */
3923 /* This is the section to which stubs in the group will be attached. */
3925 /* The stub section. */
3927 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3931 /* Temp used when calculating TOC pointers. */
3934 asection *toc_first_sec;
3936 /* Highest input section id. */
3939 /* Highest output section index. */
3942 /* Used when adding symbols. */
3943 struct ppc_link_hash_entry *dot_syms;
3945 /* List of input sections for each output section. */
3946 asection **input_list;
3948 /* Shortcuts to get to dynamic linker sections. */
3955 asection *glink_eh_frame;
3957 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3958 struct ppc_link_hash_entry *tls_get_addr;
3959 struct ppc_link_hash_entry *tls_get_addr_fd;
3961 /* The size of reliplt used by got entry relocs. */
3962 bfd_size_type got_reli_size;
3965 unsigned long stub_count[ppc_stub_global_entry];
3967 /* Number of stubs against global syms. */
3968 unsigned long stub_globals;
3970 /* Set if we're linking code with function descriptors. */
3971 unsigned int opd_abi:1;
3973 /* Support for multiple toc sections. */
3974 unsigned int do_multi_toc:1;
3975 unsigned int multi_toc_needed:1;
3976 unsigned int second_toc_pass:1;
3977 unsigned int do_toc_opt:1;
3980 unsigned int stub_error:1;
3982 /* Temp used by ppc64_elf_before_check_relocs. */
3983 unsigned int twiddled_syms:1;
3985 /* Incremented every time we size stubs. */
3986 unsigned int stub_iteration;
3988 /* Small local sym cache. */
3989 struct sym_cache sym_cache;
3992 /* Rename some of the generic section flags to better document how they
3995 /* Nonzero if this section has TLS related relocations. */
3996 #define has_tls_reloc sec_flg0
3998 /* Nonzero if this section has a call to __tls_get_addr. */
3999 #define has_tls_get_addr_call sec_flg1
4001 /* Nonzero if this section has any toc or got relocs. */
4002 #define has_toc_reloc sec_flg2
4004 /* Nonzero if this section has a call to another section that uses
4006 #define makes_toc_func_call sec_flg3
4008 /* Recursion protection when determining above flag. */
4009 #define call_check_in_progress sec_flg4
4010 #define call_check_done sec_flg5
4012 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4014 #define ppc_hash_table(p) \
4015 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4016 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4018 #define ppc_stub_hash_lookup(table, string, create, copy) \
4019 ((struct ppc_stub_hash_entry *) \
4020 bfd_hash_lookup ((table), (string), (create), (copy)))
4022 #define ppc_branch_hash_lookup(table, string, create, copy) \
4023 ((struct ppc_branch_hash_entry *) \
4024 bfd_hash_lookup ((table), (string), (create), (copy)))
4026 /* Create an entry in the stub hash table. */
4028 static struct bfd_hash_entry *
4029 stub_hash_newfunc (struct bfd_hash_entry *entry,
4030 struct bfd_hash_table *table,
4033 /* Allocate the structure if it has not already been allocated by a
4037 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4042 /* Call the allocation method of the superclass. */
4043 entry = bfd_hash_newfunc (entry, table, string);
4046 struct ppc_stub_hash_entry *eh;
4048 /* Initialize the local fields. */
4049 eh = (struct ppc_stub_hash_entry *) entry;
4050 eh->stub_type = ppc_stub_none;
4051 eh->stub_sec = NULL;
4052 eh->stub_offset = 0;
4053 eh->target_value = 0;
4054 eh->target_section = NULL;
4064 /* Create an entry in the branch hash table. */
4066 static struct bfd_hash_entry *
4067 branch_hash_newfunc (struct bfd_hash_entry *entry,
4068 struct bfd_hash_table *table,
4071 /* Allocate the structure if it has not already been allocated by a
4075 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4080 /* Call the allocation method of the superclass. */
4081 entry = bfd_hash_newfunc (entry, table, string);
4084 struct ppc_branch_hash_entry *eh;
4086 /* Initialize the local fields. */
4087 eh = (struct ppc_branch_hash_entry *) entry;
4095 /* Create an entry in a ppc64 ELF linker hash table. */
4097 static struct bfd_hash_entry *
4098 link_hash_newfunc (struct bfd_hash_entry *entry,
4099 struct bfd_hash_table *table,
4102 /* Allocate the structure if it has not already been allocated by a
4106 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4111 /* Call the allocation method of the superclass. */
4112 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4115 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4117 memset (&eh->u.stub_cache, 0,
4118 (sizeof (struct ppc_link_hash_entry)
4119 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4121 /* When making function calls, old ABI code references function entry
4122 points (dot symbols), while new ABI code references the function
4123 descriptor symbol. We need to make any combination of reference and
4124 definition work together, without breaking archive linking.
4126 For a defined function "foo" and an undefined call to "bar":
4127 An old object defines "foo" and ".foo", references ".bar" (possibly
4129 A new object defines "foo" and references "bar".
4131 A new object thus has no problem with its undefined symbols being
4132 satisfied by definitions in an old object. On the other hand, the
4133 old object won't have ".bar" satisfied by a new object.
4135 Keep a list of newly added dot-symbols. */
4137 if (string[0] == '.')
4139 struct ppc_link_hash_table *htab;
4141 htab = (struct ppc_link_hash_table *) table;
4142 eh->u.next_dot_sym = htab->dot_syms;
4143 htab->dot_syms = eh;
4150 struct tocsave_entry {
4156 tocsave_htab_hash (const void *p)
4158 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4159 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4163 tocsave_htab_eq (const void *p1, const void *p2)
4165 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4166 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4167 return e1->sec == e2->sec && e1->offset == e2->offset;
4170 /* Destroy a ppc64 ELF linker hash table. */
4173 ppc64_elf_link_hash_table_free (bfd *obfd)
4175 struct ppc_link_hash_table *htab;
4177 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4178 if (htab->tocsave_htab)
4179 htab_delete (htab->tocsave_htab);
4180 bfd_hash_table_free (&htab->branch_hash_table);
4181 bfd_hash_table_free (&htab->stub_hash_table);
4182 _bfd_elf_link_hash_table_free (obfd);
4185 /* Create a ppc64 ELF linker hash table. */
4187 static struct bfd_link_hash_table *
4188 ppc64_elf_link_hash_table_create (bfd *abfd)
4190 struct ppc_link_hash_table *htab;
4191 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4193 htab = bfd_zmalloc (amt);
4197 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4198 sizeof (struct ppc_link_hash_entry),
4205 /* Init the stub hash table too. */
4206 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4207 sizeof (struct ppc_stub_hash_entry)))
4209 _bfd_elf_link_hash_table_free (abfd);
4213 /* And the branch hash table. */
4214 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4215 sizeof (struct ppc_branch_hash_entry)))
4217 bfd_hash_table_free (&htab->stub_hash_table);
4218 _bfd_elf_link_hash_table_free (abfd);
4222 htab->tocsave_htab = htab_try_create (1024,
4226 if (htab->tocsave_htab == NULL)
4228 ppc64_elf_link_hash_table_free (abfd);
4231 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4233 /* Initializing two fields of the union is just cosmetic. We really
4234 only care about glist, but when compiled on a 32-bit host the
4235 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4236 debugger inspection of these fields look nicer. */
4237 htab->elf.init_got_refcount.refcount = 0;
4238 htab->elf.init_got_refcount.glist = NULL;
4239 htab->elf.init_plt_refcount.refcount = 0;
4240 htab->elf.init_plt_refcount.glist = NULL;
4241 htab->elf.init_got_offset.offset = 0;
4242 htab->elf.init_got_offset.glist = NULL;
4243 htab->elf.init_plt_offset.offset = 0;
4244 htab->elf.init_plt_offset.glist = NULL;
4246 return &htab->elf.root;
4249 /* Create sections for linker generated code. */
4252 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4254 struct ppc_link_hash_table *htab;
4257 htab = ppc_hash_table (info);
4259 /* Create .sfpr for code to save and restore fp regs. */
4260 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4261 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4262 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4264 if (htab->sfpr == NULL
4265 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4268 /* Create .glink for lazy dynamic linking support. */
4269 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4271 if (htab->glink == NULL
4272 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4275 if (!info->no_ld_generated_unwind_info)
4277 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4278 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4279 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4282 if (htab->glink_eh_frame == NULL
4283 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4287 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4288 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4289 if (htab->elf.iplt == NULL
4290 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4293 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4294 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4296 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4297 if (htab->elf.irelplt == NULL
4298 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4301 /* Create branch lookup table for plt_branch stubs. */
4302 flags = (SEC_ALLOC | SEC_LOAD
4303 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4304 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4306 if (htab->brlt == NULL
4307 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4313 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4314 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4315 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4318 if (htab->relbrlt == NULL
4319 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4325 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4328 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4329 struct ppc64_elf_params *params)
4331 struct ppc_link_hash_table *htab;
4333 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4335 /* Always hook our dynamic sections into the first bfd, which is the
4336 linker created stub bfd. This ensures that the GOT header is at
4337 the start of the output TOC section. */
4338 htab = ppc_hash_table (info);
4341 htab->elf.dynobj = params->stub_bfd;
4342 htab->params = params;
4344 if (info->relocatable)
4347 return create_linkage_sections (htab->elf.dynobj, info);
4350 /* Build a name for an entry in the stub hash table. */
4353 ppc_stub_name (const asection *input_section,
4354 const asection *sym_sec,
4355 const struct ppc_link_hash_entry *h,
4356 const Elf_Internal_Rela *rel)
4361 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4362 offsets from a sym as a branch target? In fact, we could
4363 probably assume the addend is always zero. */
4364 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4368 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4369 stub_name = bfd_malloc (len);
4370 if (stub_name == NULL)
4373 len = sprintf (stub_name, "%08x.%s+%x",
4374 input_section->id & 0xffffffff,
4375 h->elf.root.root.string,
4376 (int) rel->r_addend & 0xffffffff);
4380 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4381 stub_name = bfd_malloc (len);
4382 if (stub_name == NULL)
4385 len = sprintf (stub_name, "%08x.%x:%x+%x",
4386 input_section->id & 0xffffffff,
4387 sym_sec->id & 0xffffffff,
4388 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4389 (int) rel->r_addend & 0xffffffff);
4391 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4392 stub_name[len - 2] = 0;
4396 /* Look up an entry in the stub hash. Stub entries are cached because
4397 creating the stub name takes a bit of time. */
4399 static struct ppc_stub_hash_entry *
4400 ppc_get_stub_entry (const asection *input_section,
4401 const asection *sym_sec,
4402 struct ppc_link_hash_entry *h,
4403 const Elf_Internal_Rela *rel,
4404 struct ppc_link_hash_table *htab)
4406 struct ppc_stub_hash_entry *stub_entry;
4407 const asection *id_sec;
4409 /* If this input section is part of a group of sections sharing one
4410 stub section, then use the id of the first section in the group.
4411 Stub names need to include a section id, as there may well be
4412 more than one stub used to reach say, printf, and we need to
4413 distinguish between them. */
4414 id_sec = htab->stub_group[input_section->id].link_sec;
4416 if (h != NULL && h->u.stub_cache != NULL
4417 && h->u.stub_cache->h == h
4418 && h->u.stub_cache->id_sec == id_sec)
4420 stub_entry = h->u.stub_cache;
4426 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4427 if (stub_name == NULL)
4430 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4431 stub_name, FALSE, FALSE);
4433 h->u.stub_cache = stub_entry;
4441 /* Add a new stub entry to the stub hash. Not all fields of the new
4442 stub entry are initialised. */
4444 static struct ppc_stub_hash_entry *
4445 ppc_add_stub (const char *stub_name,
4447 struct bfd_link_info *info)
4449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4452 struct ppc_stub_hash_entry *stub_entry;
4454 link_sec = htab->stub_group[section->id].link_sec;
4455 stub_sec = htab->stub_group[section->id].stub_sec;
4456 if (stub_sec == NULL)
4458 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4459 if (stub_sec == NULL)
4465 namelen = strlen (link_sec->name);
4466 len = namelen + sizeof (STUB_SUFFIX);
4467 s_name = bfd_alloc (htab->params->stub_bfd, len);
4471 memcpy (s_name, link_sec->name, namelen);
4472 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4473 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4474 if (stub_sec == NULL)
4476 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4478 htab->stub_group[section->id].stub_sec = stub_sec;
4481 /* Enter this entry into the linker stub hash table. */
4482 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4484 if (stub_entry == NULL)
4486 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4487 section->owner, stub_name);
4491 stub_entry->stub_sec = stub_sec;
4492 stub_entry->stub_offset = 0;
4493 stub_entry->id_sec = link_sec;
4497 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4498 not already done. */
4501 create_got_section (bfd *abfd, struct bfd_link_info *info)
4503 asection *got, *relgot;
4505 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4507 if (!is_ppc64_elf (abfd))
4513 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4516 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4517 | SEC_LINKER_CREATED);
4519 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4521 || !bfd_set_section_alignment (abfd, got, 3))
4524 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4525 flags | SEC_READONLY);
4527 || ! bfd_set_section_alignment (abfd, relgot, 3))
4530 ppc64_elf_tdata (abfd)->got = got;
4531 ppc64_elf_tdata (abfd)->relgot = relgot;
4535 /* Create the dynamic sections, and set up shortcuts. */
4538 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4540 struct ppc_link_hash_table *htab;
4542 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4545 htab = ppc_hash_table (info);
4549 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4551 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4553 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4554 || (!info->shared && !htab->relbss))
4560 /* Follow indirect and warning symbol links. */
4562 static inline struct bfd_link_hash_entry *
4563 follow_link (struct bfd_link_hash_entry *h)
4565 while (h->type == bfd_link_hash_indirect
4566 || h->type == bfd_link_hash_warning)
4571 static inline struct elf_link_hash_entry *
4572 elf_follow_link (struct elf_link_hash_entry *h)
4574 return (struct elf_link_hash_entry *) follow_link (&h->root);
4577 static inline struct ppc_link_hash_entry *
4578 ppc_follow_link (struct ppc_link_hash_entry *h)
4580 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4583 /* Merge PLT info on FROM with that on TO. */
4586 move_plt_plist (struct ppc_link_hash_entry *from,
4587 struct ppc_link_hash_entry *to)
4589 if (from->elf.plt.plist != NULL)
4591 if (to->elf.plt.plist != NULL)
4593 struct plt_entry **entp;
4594 struct plt_entry *ent;
4596 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4598 struct plt_entry *dent;
4600 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4601 if (dent->addend == ent->addend)
4603 dent->plt.refcount += ent->plt.refcount;
4610 *entp = to->elf.plt.plist;
4613 to->elf.plt.plist = from->elf.plt.plist;
4614 from->elf.plt.plist = NULL;
4618 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4621 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4622 struct elf_link_hash_entry *dir,
4623 struct elf_link_hash_entry *ind)
4625 struct ppc_link_hash_entry *edir, *eind;
4627 edir = (struct ppc_link_hash_entry *) dir;
4628 eind = (struct ppc_link_hash_entry *) ind;
4630 edir->is_func |= eind->is_func;
4631 edir->is_func_descriptor |= eind->is_func_descriptor;
4632 edir->tls_mask |= eind->tls_mask;
4633 if (eind->oh != NULL)
4634 edir->oh = ppc_follow_link (eind->oh);
4636 /* If called to transfer flags for a weakdef during processing
4637 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4638 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4639 if (!(ELIMINATE_COPY_RELOCS
4640 && eind->elf.root.type != bfd_link_hash_indirect
4641 && edir->elf.dynamic_adjusted))
4642 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4644 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4645 edir->elf.ref_regular |= eind->elf.ref_regular;
4646 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4647 edir->elf.needs_plt |= eind->elf.needs_plt;
4648 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4650 /* Copy over any dynamic relocs we may have on the indirect sym. */
4651 if (eind->dyn_relocs != NULL)
4653 if (edir->dyn_relocs != NULL)
4655 struct elf_dyn_relocs **pp;
4656 struct elf_dyn_relocs *p;
4658 /* Add reloc counts against the indirect sym to the direct sym
4659 list. Merge any entries against the same section. */
4660 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4662 struct elf_dyn_relocs *q;
4664 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4665 if (q->sec == p->sec)
4667 q->pc_count += p->pc_count;
4668 q->count += p->count;
4675 *pp = edir->dyn_relocs;
4678 edir->dyn_relocs = eind->dyn_relocs;
4679 eind->dyn_relocs = NULL;
4682 /* If we were called to copy over info for a weak sym, that's all.
4683 You might think dyn_relocs need not be copied over; After all,
4684 both syms will be dynamic or both non-dynamic so we're just
4685 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4686 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4687 dyn_relocs in read-only sections, and it does so on what is the
4689 if (eind->elf.root.type != bfd_link_hash_indirect)
4692 /* Copy over got entries that we may have already seen to the
4693 symbol which just became indirect. */
4694 if (eind->elf.got.glist != NULL)
4696 if (edir->elf.got.glist != NULL)
4698 struct got_entry **entp;
4699 struct got_entry *ent;
4701 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4703 struct got_entry *dent;
4705 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4706 if (dent->addend == ent->addend
4707 && dent->owner == ent->owner
4708 && dent->tls_type == ent->tls_type)
4710 dent->got.refcount += ent->got.refcount;
4717 *entp = edir->elf.got.glist;
4720 edir->elf.got.glist = eind->elf.got.glist;
4721 eind->elf.got.glist = NULL;
4724 /* And plt entries. */
4725 move_plt_plist (eind, edir);
4727 if (eind->elf.dynindx != -1)
4729 if (edir->elf.dynindx != -1)
4730 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4731 edir->elf.dynstr_index);
4732 edir->elf.dynindx = eind->elf.dynindx;
4733 edir->elf.dynstr_index = eind->elf.dynstr_index;
4734 eind->elf.dynindx = -1;
4735 eind->elf.dynstr_index = 0;
4739 /* Find the function descriptor hash entry from the given function code
4740 hash entry FH. Link the entries via their OH fields. */
4742 static struct ppc_link_hash_entry *
4743 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4745 struct ppc_link_hash_entry *fdh = fh->oh;
4749 const char *fd_name = fh->elf.root.root.string + 1;
4751 fdh = (struct ppc_link_hash_entry *)
4752 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4756 fdh->is_func_descriptor = 1;
4762 return ppc_follow_link (fdh);
4765 /* Make a fake function descriptor sym for the code sym FH. */
4767 static struct ppc_link_hash_entry *
4768 make_fdh (struct bfd_link_info *info,
4769 struct ppc_link_hash_entry *fh)
4773 struct bfd_link_hash_entry *bh;
4774 struct ppc_link_hash_entry *fdh;
4776 abfd = fh->elf.root.u.undef.abfd;
4777 newsym = bfd_make_empty_symbol (abfd);
4778 newsym->name = fh->elf.root.root.string + 1;
4779 newsym->section = bfd_und_section_ptr;
4781 newsym->flags = BSF_WEAK;
4784 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4785 newsym->flags, newsym->section,
4786 newsym->value, NULL, FALSE, FALSE,
4790 fdh = (struct ppc_link_hash_entry *) bh;
4791 fdh->elf.non_elf = 0;
4793 fdh->is_func_descriptor = 1;
4800 /* Fix function descriptor symbols defined in .opd sections to be
4804 ppc64_elf_add_symbol_hook (bfd *ibfd,
4805 struct bfd_link_info *info,
4806 Elf_Internal_Sym *isym,
4808 flagword *flags ATTRIBUTE_UNUSED,
4812 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4813 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4814 && (ibfd->flags & DYNAMIC) == 0
4815 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4816 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4819 && strcmp ((*sec)->name, ".opd") == 0)
4823 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4824 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4825 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4827 /* If the symbol is a function defined in .opd, and the function
4828 code is in a discarded group, let it appear to be undefined. */
4829 if (!info->relocatable
4830 && (*sec)->reloc_count != 0
4831 && opd_entry_value (*sec, *value, &code_sec, NULL,
4832 FALSE) != (bfd_vma) -1
4833 && discarded_section (code_sec))
4835 *sec = bfd_und_section_ptr;
4836 isym->st_shndx = SHN_UNDEF;
4840 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4842 if (abiversion (ibfd) == 0)
4843 set_abiversion (ibfd, 2);
4844 else if (abiversion (ibfd) == 1)
4846 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4847 " for ABI version 1\n"), name);
4848 bfd_set_error (bfd_error_bad_value);
4856 /* Merge non-visibility st_other attributes: local entry point. */
4859 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4860 const Elf_Internal_Sym *isym,
4861 bfd_boolean definition,
4862 bfd_boolean dynamic)
4864 if (definition && !dynamic)
4865 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4866 | ELF_ST_VISIBILITY (h->other));
4869 /* This function makes an old ABI object reference to ".bar" cause the
4870 inclusion of a new ABI object archive that defines "bar".
4871 NAME is a symbol defined in an archive. Return a symbol in the hash
4872 table that might be satisfied by the archive symbols. */
4874 static struct elf_link_hash_entry *
4875 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4876 struct bfd_link_info *info,
4879 struct elf_link_hash_entry *h;
4883 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4885 /* Don't return this sym if it is a fake function descriptor
4886 created by add_symbol_adjust. */
4887 && !(h->root.type == bfd_link_hash_undefweak
4888 && ((struct ppc_link_hash_entry *) h)->fake))
4894 len = strlen (name);
4895 dot_name = bfd_alloc (abfd, len + 2);
4896 if (dot_name == NULL)
4897 return (struct elf_link_hash_entry *) 0 - 1;
4899 memcpy (dot_name + 1, name, len + 1);
4900 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4901 bfd_release (abfd, dot_name);
4905 /* This function satisfies all old ABI object references to ".bar" if a
4906 new ABI object defines "bar". Well, at least, undefined dot symbols
4907 are made weak. This stops later archive searches from including an
4908 object if we already have a function descriptor definition. It also
4909 prevents the linker complaining about undefined symbols.
4910 We also check and correct mismatched symbol visibility here. The
4911 most restrictive visibility of the function descriptor and the
4912 function entry symbol is used. */
4915 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4917 struct ppc_link_hash_table *htab;
4918 struct ppc_link_hash_entry *fdh;
4920 if (eh->elf.root.type == bfd_link_hash_indirect)
4923 if (eh->elf.root.type == bfd_link_hash_warning)
4924 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4926 if (eh->elf.root.root.string[0] != '.')
4929 htab = ppc_hash_table (info);
4933 fdh = lookup_fdh (eh, htab);
4936 if (!info->relocatable
4937 && (eh->elf.root.type == bfd_link_hash_undefined
4938 || eh->elf.root.type == bfd_link_hash_undefweak)
4939 && eh->elf.ref_regular)
4941 /* Make an undefweak function descriptor sym, which is enough to
4942 pull in an --as-needed shared lib, but won't cause link
4943 errors. Archives are handled elsewhere. */
4944 fdh = make_fdh (info, eh);
4947 fdh->elf.ref_regular = 1;
4952 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4953 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4954 if (entry_vis < descr_vis)
4955 fdh->elf.other += entry_vis - descr_vis;
4956 else if (entry_vis > descr_vis)
4957 eh->elf.other += descr_vis - entry_vis;
4959 if ((fdh->elf.root.type == bfd_link_hash_defined
4960 || fdh->elf.root.type == bfd_link_hash_defweak)
4961 && eh->elf.root.type == bfd_link_hash_undefined)
4963 eh->elf.root.type = bfd_link_hash_undefweak;
4964 eh->was_undefined = 1;
4965 htab->twiddled_syms = 1;
4972 /* Set up opd section info and abiversion for IBFD, and process list
4973 of dot-symbols we made in link_hash_newfunc. */
4976 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4978 struct ppc_link_hash_table *htab;
4979 struct ppc_link_hash_entry **p, *eh;
4980 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4982 if (opd != NULL && opd->size != 0)
4984 if (abiversion (ibfd) == 0)
4985 set_abiversion (ibfd, 1);
4986 else if (abiversion (ibfd) == 2)
4988 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4990 ibfd, abiversion (ibfd));
4991 bfd_set_error (bfd_error_bad_value);
4995 if ((ibfd->flags & DYNAMIC) == 0
4996 && (opd->flags & SEC_RELOC) != 0
4997 && opd->reloc_count != 0
4998 && !bfd_is_abs_section (opd->output_section))
5000 /* Garbage collection needs some extra help with .opd sections.
5001 We don't want to necessarily keep everything referenced by
5002 relocs in .opd, as that would keep all functions. Instead,
5003 if we reference an .opd symbol (a function descriptor), we
5004 want to keep the function code symbol's section. This is
5005 easy for global symbols, but for local syms we need to keep
5006 information about the associated function section. */
5008 asection **opd_sym_map;
5010 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5011 opd_sym_map = bfd_zalloc (ibfd, amt);
5012 if (opd_sym_map == NULL)
5014 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5015 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5016 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5020 if (!is_ppc64_elf (info->output_bfd))
5022 htab = ppc_hash_table (info);
5026 /* For input files without an explicit abiversion in e_flags
5027 we should have flagged any with symbol st_other bits set
5028 as ELFv1 and above flagged those with .opd as ELFv2.
5029 Set the output abiversion if not yet set, and for any input
5030 still ambiguous, take its abiversion from the output.
5031 Differences in ABI are reported later. */
5032 if (abiversion (info->output_bfd) == 0)
5033 set_abiversion (info->output_bfd, abiversion (ibfd));
5034 else if (abiversion (ibfd) == 0)
5035 set_abiversion (ibfd, abiversion (info->output_bfd));
5037 p = &htab->dot_syms;
5038 while ((eh = *p) != NULL)
5041 if (&eh->elf == htab->elf.hgot)
5043 else if (htab->elf.hgot == NULL
5044 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5045 htab->elf.hgot = &eh->elf;
5046 else if (!add_symbol_adjust (eh, info))
5048 p = &eh->u.next_dot_sym;
5051 /* Clear the list for non-ppc64 input files. */
5052 p = &htab->dot_syms;
5053 while ((eh = *p) != NULL)
5056 p = &eh->u.next_dot_sym;
5059 /* We need to fix the undefs list for any syms we have twiddled to
5061 if (htab->twiddled_syms)
5063 bfd_link_repair_undef_list (&htab->elf.root);
5064 htab->twiddled_syms = 0;
5069 /* Undo hash table changes when an --as-needed input file is determined
5070 not to be needed. */
5073 ppc64_elf_notice_as_needed (bfd *ibfd,
5074 struct bfd_link_info *info,
5075 enum notice_asneeded_action act)
5077 if (act == notice_not_needed)
5079 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5084 htab->dot_syms = NULL;
5086 return _bfd_elf_notice_as_needed (ibfd, info, act);
5089 /* If --just-symbols against a final linked binary, then assume we need
5090 toc adjusting stubs when calling functions defined there. */
5093 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5095 if ((sec->flags & SEC_CODE) != 0
5096 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5097 && is_ppc64_elf (sec->owner))
5099 if (abiversion (sec->owner) >= 2
5100 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5101 sec->has_toc_reloc = 1;
5103 _bfd_elf_link_just_syms (sec, info);
5106 static struct plt_entry **
5107 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5108 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5110 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5111 struct plt_entry **local_plt;
5112 unsigned char *local_got_tls_masks;
5114 if (local_got_ents == NULL)
5116 bfd_size_type size = symtab_hdr->sh_info;
5118 size *= (sizeof (*local_got_ents)
5119 + sizeof (*local_plt)
5120 + sizeof (*local_got_tls_masks));
5121 local_got_ents = bfd_zalloc (abfd, size);
5122 if (local_got_ents == NULL)
5124 elf_local_got_ents (abfd) = local_got_ents;
5127 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5129 struct got_entry *ent;
5131 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5132 if (ent->addend == r_addend
5133 && ent->owner == abfd
5134 && ent->tls_type == tls_type)
5138 bfd_size_type amt = sizeof (*ent);
5139 ent = bfd_alloc (abfd, amt);
5142 ent->next = local_got_ents[r_symndx];
5143 ent->addend = r_addend;
5145 ent->tls_type = tls_type;
5146 ent->is_indirect = FALSE;
5147 ent->got.refcount = 0;
5148 local_got_ents[r_symndx] = ent;
5150 ent->got.refcount += 1;
5153 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5154 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5155 local_got_tls_masks[r_symndx] |= tls_type;
5157 return local_plt + r_symndx;
5161 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5163 struct plt_entry *ent;
5165 for (ent = *plist; ent != NULL; ent = ent->next)
5166 if (ent->addend == addend)
5170 bfd_size_type amt = sizeof (*ent);
5171 ent = bfd_alloc (abfd, amt);
5175 ent->addend = addend;
5176 ent->plt.refcount = 0;
5179 ent->plt.refcount += 1;
5184 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5186 return (r_type == R_PPC64_REL24
5187 || r_type == R_PPC64_REL14
5188 || r_type == R_PPC64_REL14_BRTAKEN
5189 || r_type == R_PPC64_REL14_BRNTAKEN
5190 || r_type == R_PPC64_ADDR24
5191 || r_type == R_PPC64_ADDR14
5192 || r_type == R_PPC64_ADDR14_BRTAKEN
5193 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5196 /* Look through the relocs for a section during the first phase, and
5197 calculate needed space in the global offset table, procedure
5198 linkage table, and dynamic reloc sections. */
5201 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5202 asection *sec, const Elf_Internal_Rela *relocs)
5204 struct ppc_link_hash_table *htab;
5205 Elf_Internal_Shdr *symtab_hdr;
5206 struct elf_link_hash_entry **sym_hashes;
5207 const Elf_Internal_Rela *rel;
5208 const Elf_Internal_Rela *rel_end;
5210 asection **opd_sym_map;
5211 struct elf_link_hash_entry *tga, *dottga;
5213 if (info->relocatable)
5216 /* Don't do anything special with non-loaded, non-alloced sections.
5217 In particular, any relocs in such sections should not affect GOT
5218 and PLT reference counting (ie. we don't allow them to create GOT
5219 or PLT entries), there's no possibility or desire to optimize TLS
5220 relocs, and there's not much point in propagating relocs to shared
5221 libs that the dynamic linker won't relocate. */
5222 if ((sec->flags & SEC_ALLOC) == 0)
5225 BFD_ASSERT (is_ppc64_elf (abfd));
5227 htab = ppc_hash_table (info);
5231 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5232 FALSE, FALSE, TRUE);
5233 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5234 FALSE, FALSE, TRUE);
5235 symtab_hdr = &elf_symtab_hdr (abfd);
5236 sym_hashes = elf_sym_hashes (abfd);
5239 if (ppc64_elf_section_data (sec) != NULL
5240 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5241 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5243 rel_end = relocs + sec->reloc_count;
5244 for (rel = relocs; rel < rel_end; rel++)
5246 unsigned long r_symndx;
5247 struct elf_link_hash_entry *h;
5248 enum elf_ppc64_reloc_type r_type;
5250 struct _ppc64_elf_section_data *ppc64_sec;
5251 struct plt_entry **ifunc;
5253 r_symndx = ELF64_R_SYM (rel->r_info);
5254 if (r_symndx < symtab_hdr->sh_info)
5258 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5259 h = elf_follow_link (h);
5261 /* PR15323, ref flags aren't set for references in the same
5263 h->root.non_ir_ref = 1;
5265 if (h == htab->elf.hgot)
5266 sec->has_toc_reloc = 1;
5273 if (h->type == STT_GNU_IFUNC)
5276 ifunc = &h->plt.plist;
5281 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5286 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5288 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5289 rel->r_addend, PLT_IFUNC);
5294 r_type = ELF64_R_TYPE (rel->r_info);
5295 if (is_branch_reloc (r_type))
5297 if (h != NULL && (h == tga || h == dottga))
5300 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5301 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5302 /* We have a new-style __tls_get_addr call with a marker
5306 /* Mark this section as having an old-style call. */
5307 sec->has_tls_get_addr_call = 1;
5310 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5312 && !update_plt_info (abfd, ifunc, rel->r_addend))
5320 /* These special tls relocs tie a call to __tls_get_addr with
5321 its parameter symbol. */
5324 case R_PPC64_GOT_TLSLD16:
5325 case R_PPC64_GOT_TLSLD16_LO:
5326 case R_PPC64_GOT_TLSLD16_HI:
5327 case R_PPC64_GOT_TLSLD16_HA:
5328 tls_type = TLS_TLS | TLS_LD;
5331 case R_PPC64_GOT_TLSGD16:
5332 case R_PPC64_GOT_TLSGD16_LO:
5333 case R_PPC64_GOT_TLSGD16_HI:
5334 case R_PPC64_GOT_TLSGD16_HA:
5335 tls_type = TLS_TLS | TLS_GD;
5338 case R_PPC64_GOT_TPREL16_DS:
5339 case R_PPC64_GOT_TPREL16_LO_DS:
5340 case R_PPC64_GOT_TPREL16_HI:
5341 case R_PPC64_GOT_TPREL16_HA:
5343 info->flags |= DF_STATIC_TLS;
5344 tls_type = TLS_TLS | TLS_TPREL;
5347 case R_PPC64_GOT_DTPREL16_DS:
5348 case R_PPC64_GOT_DTPREL16_LO_DS:
5349 case R_PPC64_GOT_DTPREL16_HI:
5350 case R_PPC64_GOT_DTPREL16_HA:
5351 tls_type = TLS_TLS | TLS_DTPREL;
5353 sec->has_tls_reloc = 1;
5357 case R_PPC64_GOT16_DS:
5358 case R_PPC64_GOT16_HA:
5359 case R_PPC64_GOT16_HI:
5360 case R_PPC64_GOT16_LO:
5361 case R_PPC64_GOT16_LO_DS:
5362 /* This symbol requires a global offset table entry. */
5363 sec->has_toc_reloc = 1;
5364 if (r_type == R_PPC64_GOT_TLSLD16
5365 || r_type == R_PPC64_GOT_TLSGD16
5366 || r_type == R_PPC64_GOT_TPREL16_DS
5367 || r_type == R_PPC64_GOT_DTPREL16_DS
5368 || r_type == R_PPC64_GOT16
5369 || r_type == R_PPC64_GOT16_DS)
5371 htab->do_multi_toc = 1;
5372 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5375 if (ppc64_elf_tdata (abfd)->got == NULL
5376 && !create_got_section (abfd, info))
5381 struct ppc_link_hash_entry *eh;
5382 struct got_entry *ent;
5384 eh = (struct ppc_link_hash_entry *) h;
5385 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5386 if (ent->addend == rel->r_addend
5387 && ent->owner == abfd
5388 && ent->tls_type == tls_type)
5392 bfd_size_type amt = sizeof (*ent);
5393 ent = bfd_alloc (abfd, amt);
5396 ent->next = eh->elf.got.glist;
5397 ent->addend = rel->r_addend;
5399 ent->tls_type = tls_type;
5400 ent->is_indirect = FALSE;
5401 ent->got.refcount = 0;
5402 eh->elf.got.glist = ent;
5404 ent->got.refcount += 1;
5405 eh->tls_mask |= tls_type;
5408 /* This is a global offset table entry for a local symbol. */
5409 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5410 rel->r_addend, tls_type))
5413 /* We may also need a plt entry if the symbol turns out to be
5415 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5417 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5422 case R_PPC64_PLT16_HA:
5423 case R_PPC64_PLT16_HI:
5424 case R_PPC64_PLT16_LO:
5427 /* This symbol requires a procedure linkage table entry. We
5428 actually build the entry in adjust_dynamic_symbol,
5429 because this might be a case of linking PIC code without
5430 linking in any dynamic objects, in which case we don't
5431 need to generate a procedure linkage table after all. */
5434 /* It does not make sense to have a procedure linkage
5435 table entry for a local symbol. */
5436 bfd_set_error (bfd_error_bad_value);
5441 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5444 if (h->root.root.string[0] == '.'
5445 && h->root.root.string[1] != '\0')
5446 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5450 /* The following relocations don't need to propagate the
5451 relocation if linking a shared object since they are
5452 section relative. */
5453 case R_PPC64_SECTOFF:
5454 case R_PPC64_SECTOFF_LO:
5455 case R_PPC64_SECTOFF_HI:
5456 case R_PPC64_SECTOFF_HA:
5457 case R_PPC64_SECTOFF_DS:
5458 case R_PPC64_SECTOFF_LO_DS:
5459 case R_PPC64_DTPREL16:
5460 case R_PPC64_DTPREL16_LO:
5461 case R_PPC64_DTPREL16_HI:
5462 case R_PPC64_DTPREL16_HA:
5463 case R_PPC64_DTPREL16_DS:
5464 case R_PPC64_DTPREL16_LO_DS:
5465 case R_PPC64_DTPREL16_HIGH:
5466 case R_PPC64_DTPREL16_HIGHA:
5467 case R_PPC64_DTPREL16_HIGHER:
5468 case R_PPC64_DTPREL16_HIGHERA:
5469 case R_PPC64_DTPREL16_HIGHEST:
5470 case R_PPC64_DTPREL16_HIGHESTA:
5475 case R_PPC64_REL16_LO:
5476 case R_PPC64_REL16_HI:
5477 case R_PPC64_REL16_HA:
5480 /* Not supported as a dynamic relocation. */
5481 case R_PPC64_ADDR64_LOCAL:
5484 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5486 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5487 "in shared libraries and PIEs.\n"),
5488 abfd, sec, rel->r_offset,
5489 ppc64_elf_howto_table[r_type]->name);
5490 bfd_set_error (bfd_error_bad_value);
5496 case R_PPC64_TOC16_DS:
5497 htab->do_multi_toc = 1;
5498 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5499 case R_PPC64_TOC16_LO:
5500 case R_PPC64_TOC16_HI:
5501 case R_PPC64_TOC16_HA:
5502 case R_PPC64_TOC16_LO_DS:
5503 sec->has_toc_reloc = 1;
5506 /* This relocation describes the C++ object vtable hierarchy.
5507 Reconstruct it for later use during GC. */
5508 case R_PPC64_GNU_VTINHERIT:
5509 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5513 /* This relocation describes which C++ vtable entries are actually
5514 used. Record for later use during GC. */
5515 case R_PPC64_GNU_VTENTRY:
5516 BFD_ASSERT (h != NULL);
5518 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5523 case R_PPC64_REL14_BRTAKEN:
5524 case R_PPC64_REL14_BRNTAKEN:
5526 asection *dest = NULL;
5528 /* Heuristic: If jumping outside our section, chances are
5529 we are going to need a stub. */
5532 /* If the sym is weak it may be overridden later, so
5533 don't assume we know where a weak sym lives. */
5534 if (h->root.type == bfd_link_hash_defined)
5535 dest = h->root.u.def.section;
5539 Elf_Internal_Sym *isym;
5541 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5546 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5550 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5555 if (h != NULL && ifunc == NULL)
5557 /* We may need a .plt entry if the function this reloc
5558 refers to is in a shared lib. */
5559 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5562 if (h->root.root.string[0] == '.'
5563 && h->root.root.string[1] != '\0')
5564 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5565 if (h == tga || h == dottga)
5566 sec->has_tls_reloc = 1;
5570 case R_PPC64_TPREL64:
5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5573 info->flags |= DF_STATIC_TLS;
5576 case R_PPC64_DTPMOD64:
5577 if (rel + 1 < rel_end
5578 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5579 && rel[1].r_offset == rel->r_offset + 8)
5580 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5582 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5585 case R_PPC64_DTPREL64:
5586 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5588 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5589 && rel[-1].r_offset == rel->r_offset - 8)
5590 /* This is the second reloc of a dtpmod, dtprel pair.
5591 Don't mark with TLS_DTPREL. */
5595 sec->has_tls_reloc = 1;
5598 struct ppc_link_hash_entry *eh;
5599 eh = (struct ppc_link_hash_entry *) h;
5600 eh->tls_mask |= tls_type;
5603 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5604 rel->r_addend, tls_type))
5607 ppc64_sec = ppc64_elf_section_data (sec);
5608 if (ppc64_sec->sec_type != sec_toc)
5612 /* One extra to simplify get_tls_mask. */
5613 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5614 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5615 if (ppc64_sec->u.toc.symndx == NULL)
5617 amt = sec->size * sizeof (bfd_vma) / 8;
5618 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5619 if (ppc64_sec->u.toc.add == NULL)
5621 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5622 ppc64_sec->sec_type = sec_toc;
5624 BFD_ASSERT (rel->r_offset % 8 == 0);
5625 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5626 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5628 /* Mark the second slot of a GD or LD entry.
5629 -1 to indicate GD and -2 to indicate LD. */
5630 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5631 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5632 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5633 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5636 case R_PPC64_TPREL16:
5637 case R_PPC64_TPREL16_LO:
5638 case R_PPC64_TPREL16_HI:
5639 case R_PPC64_TPREL16_HA:
5640 case R_PPC64_TPREL16_DS:
5641 case R_PPC64_TPREL16_LO_DS:
5642 case R_PPC64_TPREL16_HIGH:
5643 case R_PPC64_TPREL16_HIGHA:
5644 case R_PPC64_TPREL16_HIGHER:
5645 case R_PPC64_TPREL16_HIGHERA:
5646 case R_PPC64_TPREL16_HIGHEST:
5647 case R_PPC64_TPREL16_HIGHESTA:
5650 info->flags |= DF_STATIC_TLS;
5655 case R_PPC64_ADDR64:
5656 if (opd_sym_map != NULL
5657 && rel + 1 < rel_end
5658 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5662 if (h->root.root.string[0] == '.'
5663 && h->root.root.string[1] != 0
5664 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5667 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5672 Elf_Internal_Sym *isym;
5674 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5679 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5680 if (s != NULL && s != sec)
5681 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5686 case R_PPC64_ADDR16:
5687 case R_PPC64_ADDR16_DS:
5688 case R_PPC64_ADDR16_HA:
5689 case R_PPC64_ADDR16_HI:
5690 case R_PPC64_ADDR16_HIGH:
5691 case R_PPC64_ADDR16_HIGHA:
5692 case R_PPC64_ADDR16_HIGHER:
5693 case R_PPC64_ADDR16_HIGHERA:
5694 case R_PPC64_ADDR16_HIGHEST:
5695 case R_PPC64_ADDR16_HIGHESTA:
5696 case R_PPC64_ADDR16_LO:
5697 case R_PPC64_ADDR16_LO_DS:
5698 if (h != NULL && !info->shared && abiversion (abfd) != 1
5699 && rel->r_addend == 0)
5701 /* We may need a .plt entry if this reloc refers to a
5702 function in a shared lib. */
5703 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5705 h->pointer_equality_needed = 1;
5712 case R_PPC64_ADDR14:
5713 case R_PPC64_ADDR14_BRNTAKEN:
5714 case R_PPC64_ADDR14_BRTAKEN:
5715 case R_PPC64_ADDR24:
5716 case R_PPC64_ADDR32:
5717 case R_PPC64_UADDR16:
5718 case R_PPC64_UADDR32:
5719 case R_PPC64_UADDR64:
5721 if (h != NULL && !info->shared)
5722 /* We may need a copy reloc. */
5725 /* Don't propagate .opd relocs. */
5726 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5729 /* If we are creating a shared library, and this is a reloc
5730 against a global symbol, or a non PC relative reloc
5731 against a local symbol, then we need to copy the reloc
5732 into the shared library. However, if we are linking with
5733 -Bsymbolic, we do not need to copy a reloc against a
5734 global symbol which is defined in an object we are
5735 including in the link (i.e., DEF_REGULAR is set). At
5736 this point we have not seen all the input files, so it is
5737 possible that DEF_REGULAR is not set now but will be set
5738 later (it is never cleared). In case of a weak definition,
5739 DEF_REGULAR may be cleared later by a strong definition in
5740 a shared library. We account for that possibility below by
5741 storing information in the dyn_relocs field of the hash
5742 table entry. A similar situation occurs when creating
5743 shared libraries and symbol visibility changes render the
5746 If on the other hand, we are creating an executable, we
5747 may need to keep relocations for symbols satisfied by a
5748 dynamic library if we manage to avoid copy relocs for the
5752 && (must_be_dyn_reloc (info, r_type)
5754 && (!SYMBOLIC_BIND (info, h)
5755 || h->root.type == bfd_link_hash_defweak
5756 || !h->def_regular))))
5757 || (ELIMINATE_COPY_RELOCS
5760 && (h->root.type == bfd_link_hash_defweak
5761 || !h->def_regular))
5765 /* We must copy these reloc types into the output file.
5766 Create a reloc section in dynobj and make room for
5770 sreloc = _bfd_elf_make_dynamic_reloc_section
5771 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5777 /* If this is a global symbol, we count the number of
5778 relocations we need for this symbol. */
5781 struct elf_dyn_relocs *p;
5782 struct elf_dyn_relocs **head;
5784 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5786 if (p == NULL || p->sec != sec)
5788 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5798 if (!must_be_dyn_reloc (info, r_type))
5803 /* Track dynamic relocs needed for local syms too.
5804 We really need local syms available to do this
5806 struct ppc_dyn_relocs *p;
5807 struct ppc_dyn_relocs **head;
5808 bfd_boolean is_ifunc;
5811 Elf_Internal_Sym *isym;
5813 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5818 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5822 vpp = &elf_section_data (s)->local_dynrel;
5823 head = (struct ppc_dyn_relocs **) vpp;
5824 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5826 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5828 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5830 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5836 p->ifunc = is_ifunc;
5852 /* Merge backend specific data from an object file to the output
5853 object file when linking. */
5856 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5858 unsigned long iflags, oflags;
5860 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5863 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5866 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5869 iflags = elf_elfheader (ibfd)->e_flags;
5870 oflags = elf_elfheader (obfd)->e_flags;
5872 if (iflags & ~EF_PPC64_ABI)
5874 (*_bfd_error_handler)
5875 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5876 bfd_set_error (bfd_error_bad_value);
5879 else if (iflags != oflags && iflags != 0)
5881 (*_bfd_error_handler)
5882 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5883 ibfd, iflags, oflags);
5884 bfd_set_error (bfd_error_bad_value);
5888 /* Merge Tag_compatibility attributes and any common GNU ones. */
5889 _bfd_elf_merge_object_attributes (ibfd, obfd);
5895 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5897 /* Print normal ELF private data. */
5898 _bfd_elf_print_private_bfd_data (abfd, ptr);
5900 if (elf_elfheader (abfd)->e_flags != 0)
5904 /* xgettext:c-format */
5905 fprintf (file, _("private flags = 0x%lx:"),
5906 elf_elfheader (abfd)->e_flags);
5908 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5909 fprintf (file, _(" [abiv%ld]"),
5910 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5917 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5918 of the code entry point, and its section, which must be in the same
5919 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5922 opd_entry_value (asection *opd_sec,
5924 asection **code_sec,
5926 bfd_boolean in_code_sec)
5928 bfd *opd_bfd = opd_sec->owner;
5929 Elf_Internal_Rela *relocs;
5930 Elf_Internal_Rela *lo, *hi, *look;
5933 /* No relocs implies we are linking a --just-symbols object, or looking
5934 at a final linked executable with addr2line or somesuch. */
5935 if (opd_sec->reloc_count == 0)
5937 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5939 if (contents == NULL)
5941 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5942 return (bfd_vma) -1;
5943 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5946 val = bfd_get_64 (opd_bfd, contents + offset);
5947 if (code_sec != NULL)
5949 asection *sec, *likely = NULL;
5955 && val < sec->vma + sec->size)
5961 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5963 && (sec->flags & SEC_LOAD) != 0
5964 && (sec->flags & SEC_ALLOC) != 0)
5969 if (code_off != NULL)
5970 *code_off = val - likely->vma;
5976 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5978 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5980 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5982 /* Go find the opd reloc at the sym address. */
5984 BFD_ASSERT (lo != NULL);
5985 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5989 look = lo + (hi - lo) / 2;
5990 if (look->r_offset < offset)
5992 else if (look->r_offset > offset)
5996 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5998 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5999 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6001 unsigned long symndx = ELF64_R_SYM (look->r_info);
6002 asection *sec = NULL;
6004 if (symndx >= symtab_hdr->sh_info
6005 && elf_sym_hashes (opd_bfd) != NULL)
6007 struct elf_link_hash_entry **sym_hashes;
6008 struct elf_link_hash_entry *rh;
6010 sym_hashes = elf_sym_hashes (opd_bfd);
6011 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6014 rh = elf_follow_link (rh);
6015 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6016 || rh->root.type == bfd_link_hash_defweak);
6017 val = rh->root.u.def.value;
6018 sec = rh->root.u.def.section;
6019 if (sec->owner != opd_bfd)
6029 Elf_Internal_Sym *sym;
6031 if (symndx < symtab_hdr->sh_info)
6033 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6036 size_t symcnt = symtab_hdr->sh_info;
6037 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6042 symtab_hdr->contents = (bfd_byte *) sym;
6048 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6054 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6057 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6058 val = sym->st_value;
6061 val += look->r_addend;
6062 if (code_off != NULL)
6064 if (code_sec != NULL)
6066 if (in_code_sec && *code_sec != sec)
6071 if (sec->output_section != NULL)
6072 val += sec->output_section->vma + sec->output_offset;
6081 /* If the ELF symbol SYM might be a function in SEC, return the
6082 function size and set *CODE_OFF to the function's entry point,
6083 otherwise return zero. */
6085 static bfd_size_type
6086 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6091 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6092 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6096 if (!(sym->flags & BSF_SYNTHETIC))
6097 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6099 if (strcmp (sym->section->name, ".opd") == 0)
6101 if (opd_entry_value (sym->section, sym->value,
6102 &sec, code_off, TRUE) == (bfd_vma) -1)
6104 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6105 symbol. This size has nothing to do with the code size of the
6106 function, which is what we're supposed to return, but the
6107 code size isn't available without looking up the dot-sym.
6108 However, doing that would be a waste of time particularly
6109 since elf_find_function will look at the dot-sym anyway.
6110 Now, elf_find_function will keep the largest size of any
6111 function sym found at the code address of interest, so return
6112 1 here to avoid it incorrectly caching a larger function size
6113 for a small function. This does mean we return the wrong
6114 size for a new-ABI function of size 24, but all that does is
6115 disable caching for such functions. */
6121 if (sym->section != sec)
6123 *code_off = sym->value;
6130 /* Return true if symbol is defined in a regular object file. */
6133 is_static_defined (struct elf_link_hash_entry *h)
6135 return ((h->root.type == bfd_link_hash_defined
6136 || h->root.type == bfd_link_hash_defweak)
6137 && h->root.u.def.section != NULL
6138 && h->root.u.def.section->output_section != NULL);
6141 /* If FDH is a function descriptor symbol, return the associated code
6142 entry symbol if it is defined. Return NULL otherwise. */
6144 static struct ppc_link_hash_entry *
6145 defined_code_entry (struct ppc_link_hash_entry *fdh)
6147 if (fdh->is_func_descriptor)
6149 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6150 if (fh->elf.root.type == bfd_link_hash_defined
6151 || fh->elf.root.type == bfd_link_hash_defweak)
6157 /* If FH is a function code entry symbol, return the associated
6158 function descriptor symbol if it is defined. Return NULL otherwise. */
6160 static struct ppc_link_hash_entry *
6161 defined_func_desc (struct ppc_link_hash_entry *fh)
6164 && fh->oh->is_func_descriptor)
6166 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6167 if (fdh->elf.root.type == bfd_link_hash_defined
6168 || fdh->elf.root.type == bfd_link_hash_defweak)
6174 /* Mark all our entry sym sections, both opd and code section. */
6177 ppc64_elf_gc_keep (struct bfd_link_info *info)
6179 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6180 struct bfd_sym_chain *sym;
6185 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6187 struct ppc_link_hash_entry *eh, *fh;
6190 eh = (struct ppc_link_hash_entry *)
6191 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6194 if (eh->elf.root.type != bfd_link_hash_defined
6195 && eh->elf.root.type != bfd_link_hash_defweak)
6198 fh = defined_code_entry (eh);
6201 sec = fh->elf.root.u.def.section;
6202 sec->flags |= SEC_KEEP;
6204 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6205 && opd_entry_value (eh->elf.root.u.def.section,
6206 eh->elf.root.u.def.value,
6207 &sec, NULL, FALSE) != (bfd_vma) -1)
6208 sec->flags |= SEC_KEEP;
6210 sec = eh->elf.root.u.def.section;
6211 sec->flags |= SEC_KEEP;
6215 /* Mark sections containing dynamically referenced symbols. When
6216 building shared libraries, we must assume that any visible symbol is
6220 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6222 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6223 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6224 struct ppc_link_hash_entry *fdh;
6225 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6227 /* Dynamic linking info is on the func descriptor sym. */
6228 fdh = defined_func_desc (eh);
6232 if ((eh->elf.root.type == bfd_link_hash_defined
6233 || eh->elf.root.type == bfd_link_hash_defweak)
6234 && (eh->elf.ref_dynamic
6235 || (eh->elf.def_regular
6236 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6237 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6238 && (!info->executable
6239 || info->export_dynamic
6242 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6243 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6244 || !bfd_hide_sym_by_version (info->version_info,
6245 eh->elf.root.root.string)))))
6248 struct ppc_link_hash_entry *fh;
6250 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6252 /* Function descriptor syms cause the associated
6253 function code sym section to be marked. */
6254 fh = defined_code_entry (eh);
6257 code_sec = fh->elf.root.u.def.section;
6258 code_sec->flags |= SEC_KEEP;
6260 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6261 && opd_entry_value (eh->elf.root.u.def.section,
6262 eh->elf.root.u.def.value,
6263 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6264 code_sec->flags |= SEC_KEEP;
6270 /* Return the section that should be marked against GC for a given
6274 ppc64_elf_gc_mark_hook (asection *sec,
6275 struct bfd_link_info *info,
6276 Elf_Internal_Rela *rel,
6277 struct elf_link_hash_entry *h,
6278 Elf_Internal_Sym *sym)
6282 /* Syms return NULL if we're marking .opd, so we avoid marking all
6283 function sections, as all functions are referenced in .opd. */
6285 if (get_opd_info (sec) != NULL)
6290 enum elf_ppc64_reloc_type r_type;
6291 struct ppc_link_hash_entry *eh, *fh, *fdh;
6293 r_type = ELF64_R_TYPE (rel->r_info);
6296 case R_PPC64_GNU_VTINHERIT:
6297 case R_PPC64_GNU_VTENTRY:
6301 switch (h->root.type)
6303 case bfd_link_hash_defined:
6304 case bfd_link_hash_defweak:
6305 eh = (struct ppc_link_hash_entry *) h;
6306 fdh = defined_func_desc (eh);
6310 /* Function descriptor syms cause the associated
6311 function code sym section to be marked. */
6312 fh = defined_code_entry (eh);
6315 /* They also mark their opd section. */
6316 eh->elf.root.u.def.section->gc_mark = 1;
6318 rsec = fh->elf.root.u.def.section;
6320 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6321 && opd_entry_value (eh->elf.root.u.def.section,
6322 eh->elf.root.u.def.value,
6323 &rsec, NULL, FALSE) != (bfd_vma) -1)
6324 eh->elf.root.u.def.section->gc_mark = 1;
6326 rsec = h->root.u.def.section;
6329 case bfd_link_hash_common:
6330 rsec = h->root.u.c.p->section;
6334 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6340 struct _opd_sec_data *opd;
6342 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6343 opd = get_opd_info (rsec);
6344 if (opd != NULL && opd->func_sec != NULL)
6348 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6355 /* Update the .got, .plt. and dynamic reloc reference counts for the
6356 section being removed. */
6359 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6360 asection *sec, const Elf_Internal_Rela *relocs)
6362 struct ppc_link_hash_table *htab;
6363 Elf_Internal_Shdr *symtab_hdr;
6364 struct elf_link_hash_entry **sym_hashes;
6365 struct got_entry **local_got_ents;
6366 const Elf_Internal_Rela *rel, *relend;
6368 if (info->relocatable)
6371 if ((sec->flags & SEC_ALLOC) == 0)
6374 elf_section_data (sec)->local_dynrel = NULL;
6376 htab = ppc_hash_table (info);
6380 symtab_hdr = &elf_symtab_hdr (abfd);
6381 sym_hashes = elf_sym_hashes (abfd);
6382 local_got_ents = elf_local_got_ents (abfd);
6384 relend = relocs + sec->reloc_count;
6385 for (rel = relocs; rel < relend; rel++)
6387 unsigned long r_symndx;
6388 enum elf_ppc64_reloc_type r_type;
6389 struct elf_link_hash_entry *h = NULL;
6390 unsigned char tls_type = 0;
6392 r_symndx = ELF64_R_SYM (rel->r_info);
6393 r_type = ELF64_R_TYPE (rel->r_info);
6394 if (r_symndx >= symtab_hdr->sh_info)
6396 struct ppc_link_hash_entry *eh;
6397 struct elf_dyn_relocs **pp;
6398 struct elf_dyn_relocs *p;
6400 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6401 h = elf_follow_link (h);
6402 eh = (struct ppc_link_hash_entry *) h;
6404 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6407 /* Everything must go for SEC. */
6413 if (is_branch_reloc (r_type))
6415 struct plt_entry **ifunc = NULL;
6418 if (h->type == STT_GNU_IFUNC)
6419 ifunc = &h->plt.plist;
6421 else if (local_got_ents != NULL)
6423 struct plt_entry **local_plt = (struct plt_entry **)
6424 (local_got_ents + symtab_hdr->sh_info);
6425 unsigned char *local_got_tls_masks = (unsigned char *)
6426 (local_plt + symtab_hdr->sh_info);
6427 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6428 ifunc = local_plt + r_symndx;
6432 struct plt_entry *ent;
6434 for (ent = *ifunc; ent != NULL; ent = ent->next)
6435 if (ent->addend == rel->r_addend)
6439 if (ent->plt.refcount > 0)
6440 ent->plt.refcount -= 1;
6447 case R_PPC64_GOT_TLSLD16:
6448 case R_PPC64_GOT_TLSLD16_LO:
6449 case R_PPC64_GOT_TLSLD16_HI:
6450 case R_PPC64_GOT_TLSLD16_HA:
6451 tls_type = TLS_TLS | TLS_LD;
6454 case R_PPC64_GOT_TLSGD16:
6455 case R_PPC64_GOT_TLSGD16_LO:
6456 case R_PPC64_GOT_TLSGD16_HI:
6457 case R_PPC64_GOT_TLSGD16_HA:
6458 tls_type = TLS_TLS | TLS_GD;
6461 case R_PPC64_GOT_TPREL16_DS:
6462 case R_PPC64_GOT_TPREL16_LO_DS:
6463 case R_PPC64_GOT_TPREL16_HI:
6464 case R_PPC64_GOT_TPREL16_HA:
6465 tls_type = TLS_TLS | TLS_TPREL;
6468 case R_PPC64_GOT_DTPREL16_DS:
6469 case R_PPC64_GOT_DTPREL16_LO_DS:
6470 case R_PPC64_GOT_DTPREL16_HI:
6471 case R_PPC64_GOT_DTPREL16_HA:
6472 tls_type = TLS_TLS | TLS_DTPREL;
6476 case R_PPC64_GOT16_DS:
6477 case R_PPC64_GOT16_HA:
6478 case R_PPC64_GOT16_HI:
6479 case R_PPC64_GOT16_LO:
6480 case R_PPC64_GOT16_LO_DS:
6483 struct got_entry *ent;
6488 ent = local_got_ents[r_symndx];
6490 for (; ent != NULL; ent = ent->next)
6491 if (ent->addend == rel->r_addend
6492 && ent->owner == abfd
6493 && ent->tls_type == tls_type)
6497 if (ent->got.refcount > 0)
6498 ent->got.refcount -= 1;
6502 case R_PPC64_PLT16_HA:
6503 case R_PPC64_PLT16_HI:
6504 case R_PPC64_PLT16_LO:
6508 case R_PPC64_REL14_BRNTAKEN:
6509 case R_PPC64_REL14_BRTAKEN:
6513 struct plt_entry *ent;
6515 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6516 if (ent->addend == rel->r_addend)
6518 if (ent != NULL && ent->plt.refcount > 0)
6519 ent->plt.refcount -= 1;
6530 /* The maximum size of .sfpr. */
6531 #define SFPR_MAX (218*4)
6533 struct sfpr_def_parms
6535 const char name[12];
6536 unsigned char lo, hi;
6537 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6538 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6541 /* Auto-generate _save*, _rest* functions in .sfpr. */
6544 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6546 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6548 size_t len = strlen (parm->name);
6549 bfd_boolean writing = FALSE;
6555 memcpy (sym, parm->name, len);
6558 for (i = parm->lo; i <= parm->hi; i++)
6560 struct elf_link_hash_entry *h;
6562 sym[len + 0] = i / 10 + '0';
6563 sym[len + 1] = i % 10 + '0';
6564 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6568 h->root.type = bfd_link_hash_defined;
6569 h->root.u.def.section = htab->sfpr;
6570 h->root.u.def.value = htab->sfpr->size;
6573 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6575 if (htab->sfpr->contents == NULL)
6577 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6578 if (htab->sfpr->contents == NULL)
6584 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6586 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6588 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6589 htab->sfpr->size = p - htab->sfpr->contents;
6597 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6599 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6604 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6606 p = savegpr0 (abfd, p, r);
6607 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6609 bfd_put_32 (abfd, BLR, p);
6614 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6616 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6621 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6623 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6625 p = restgpr0 (abfd, p, r);
6626 bfd_put_32 (abfd, MTLR_R0, p);
6630 p = restgpr0 (abfd, p, 30);
6631 p = restgpr0 (abfd, p, 31);
6633 bfd_put_32 (abfd, BLR, p);
6638 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6640 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6645 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6647 p = savegpr1 (abfd, p, r);
6648 bfd_put_32 (abfd, BLR, p);
6653 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6655 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6660 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6662 p = restgpr1 (abfd, p, r);
6663 bfd_put_32 (abfd, BLR, p);
6668 savefpr (bfd *abfd, bfd_byte *p, int r)
6670 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6675 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6677 p = savefpr (abfd, p, r);
6678 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6680 bfd_put_32 (abfd, BLR, p);
6685 restfpr (bfd *abfd, bfd_byte *p, int r)
6687 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6692 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6694 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6696 p = restfpr (abfd, p, r);
6697 bfd_put_32 (abfd, MTLR_R0, p);
6701 p = restfpr (abfd, p, 30);
6702 p = restfpr (abfd, p, 31);
6704 bfd_put_32 (abfd, BLR, p);
6709 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6711 p = savefpr (abfd, p, r);
6712 bfd_put_32 (abfd, BLR, p);
6717 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6719 p = restfpr (abfd, p, r);
6720 bfd_put_32 (abfd, BLR, p);
6725 savevr (bfd *abfd, bfd_byte *p, int r)
6727 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6729 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6734 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6736 p = savevr (abfd, p, r);
6737 bfd_put_32 (abfd, BLR, p);
6742 restvr (bfd *abfd, bfd_byte *p, int r)
6744 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6746 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6751 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6753 p = restvr (abfd, p, r);
6754 bfd_put_32 (abfd, BLR, p);
6758 /* Called via elf_link_hash_traverse to transfer dynamic linking
6759 information on function code symbol entries to their corresponding
6760 function descriptor symbol entries. */
6763 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6765 struct bfd_link_info *info;
6766 struct ppc_link_hash_table *htab;
6767 struct plt_entry *ent;
6768 struct ppc_link_hash_entry *fh;
6769 struct ppc_link_hash_entry *fdh;
6770 bfd_boolean force_local;
6772 fh = (struct ppc_link_hash_entry *) h;
6773 if (fh->elf.root.type == bfd_link_hash_indirect)
6777 htab = ppc_hash_table (info);
6781 /* Resolve undefined references to dot-symbols as the value
6782 in the function descriptor, if we have one in a regular object.
6783 This is to satisfy cases like ".quad .foo". Calls to functions
6784 in dynamic objects are handled elsewhere. */
6785 if (fh->elf.root.type == bfd_link_hash_undefweak
6786 && fh->was_undefined
6787 && (fdh = defined_func_desc (fh)) != NULL
6788 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6789 && opd_entry_value (fdh->elf.root.u.def.section,
6790 fdh->elf.root.u.def.value,
6791 &fh->elf.root.u.def.section,
6792 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6794 fh->elf.root.type = fdh->elf.root.type;
6795 fh->elf.forced_local = 1;
6796 fh->elf.def_regular = fdh->elf.def_regular;
6797 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6800 /* If this is a function code symbol, transfer dynamic linking
6801 information to the function descriptor symbol. */
6805 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6806 if (ent->plt.refcount > 0)
6809 || fh->elf.root.root.string[0] != '.'
6810 || fh->elf.root.root.string[1] == '\0')
6813 /* Find the corresponding function descriptor symbol. Create it
6814 as undefined if necessary. */
6816 fdh = lookup_fdh (fh, htab);
6818 && !info->executable
6819 && (fh->elf.root.type == bfd_link_hash_undefined
6820 || fh->elf.root.type == bfd_link_hash_undefweak))
6822 fdh = make_fdh (info, fh);
6827 /* Fake function descriptors are made undefweak. If the function
6828 code symbol is strong undefined, make the fake sym the same.
6829 If the function code symbol is defined, then force the fake
6830 descriptor local; We can't support overriding of symbols in a
6831 shared library on a fake descriptor. */
6835 && fdh->elf.root.type == bfd_link_hash_undefweak)
6837 if (fh->elf.root.type == bfd_link_hash_undefined)
6839 fdh->elf.root.type = bfd_link_hash_undefined;
6840 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6842 else if (fh->elf.root.type == bfd_link_hash_defined
6843 || fh->elf.root.type == bfd_link_hash_defweak)
6845 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6850 && !fdh->elf.forced_local
6851 && (!info->executable
6852 || fdh->elf.def_dynamic
6853 || fdh->elf.ref_dynamic
6854 || (fdh->elf.root.type == bfd_link_hash_undefweak
6855 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6857 if (fdh->elf.dynindx == -1)
6858 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6860 fdh->elf.ref_regular |= fh->elf.ref_regular;
6861 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6862 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6863 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6864 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6866 move_plt_plist (fh, fdh);
6867 fdh->elf.needs_plt = 1;
6869 fdh->is_func_descriptor = 1;
6874 /* Now that the info is on the function descriptor, clear the
6875 function code sym info. Any function code syms for which we
6876 don't have a definition in a regular file, we force local.
6877 This prevents a shared library from exporting syms that have
6878 been imported from another library. Function code syms that
6879 are really in the library we must leave global to prevent the
6880 linker dragging in a definition from a static library. */
6881 force_local = (!fh->elf.def_regular
6883 || !fdh->elf.def_regular
6884 || fdh->elf.forced_local);
6885 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6890 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6891 this hook to a) provide some gcc support functions, and b) transfer
6892 dynamic linking information gathered so far on function code symbol
6893 entries, to their corresponding function descriptor symbol entries. */
6896 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6897 struct bfd_link_info *info)
6899 struct ppc_link_hash_table *htab;
6901 static const struct sfpr_def_parms funcs[] =
6903 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6904 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6905 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6906 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6907 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6908 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6909 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6910 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6911 { "._savef", 14, 31, savefpr, savefpr1_tail },
6912 { "._restf", 14, 31, restfpr, restfpr1_tail },
6913 { "_savevr_", 20, 31, savevr, savevr_tail },
6914 { "_restvr_", 20, 31, restvr, restvr_tail }
6917 htab = ppc_hash_table (info);
6921 if (!info->relocatable
6922 && htab->elf.hgot != NULL)
6924 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6925 /* Make .TOC. defined so as to prevent it being made dynamic.
6926 The wrong value here is fixed later in ppc64_elf_set_toc. */
6927 htab->elf.hgot->type = STT_OBJECT;
6928 htab->elf.hgot->root.type = bfd_link_hash_defined;
6929 htab->elf.hgot->root.u.def.value = 0;
6930 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6931 htab->elf.hgot->def_regular = 1;
6932 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6936 if (htab->sfpr == NULL)
6937 /* We don't have any relocs. */
6940 /* Provide any missing _save* and _rest* functions. */
6941 htab->sfpr->size = 0;
6942 if (htab->params->save_restore_funcs)
6943 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6944 if (!sfpr_define (info, &funcs[i]))
6947 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6949 if (htab->sfpr->size == 0)
6950 htab->sfpr->flags |= SEC_EXCLUDE;
6955 /* Return true if we have dynamic relocs that apply to read-only sections. */
6958 readonly_dynrelocs (struct elf_link_hash_entry *h)
6960 struct ppc_link_hash_entry *eh;
6961 struct elf_dyn_relocs *p;
6963 eh = (struct ppc_link_hash_entry *) h;
6964 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6966 asection *s = p->sec->output_section;
6968 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6974 /* Adjust a symbol defined by a dynamic object and referenced by a
6975 regular object. The current definition is in some section of the
6976 dynamic object, but we're not including those sections. We have to
6977 change the definition to something the rest of the link can
6981 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6982 struct elf_link_hash_entry *h)
6984 struct ppc_link_hash_table *htab;
6987 htab = ppc_hash_table (info);
6991 /* Deal with function syms. */
6992 if (h->type == STT_FUNC
6993 || h->type == STT_GNU_IFUNC
6996 /* Clear procedure linkage table information for any symbol that
6997 won't need a .plt entry. */
6998 struct plt_entry *ent;
6999 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7000 if (ent->plt.refcount > 0)
7003 || (h->type != STT_GNU_IFUNC
7004 && (SYMBOL_CALLS_LOCAL (info, h)
7005 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7006 && h->root.type == bfd_link_hash_undefweak))))
7008 h->plt.plist = NULL;
7010 h->pointer_equality_needed = 0;
7012 else if (abiversion (info->output_bfd) == 2)
7014 /* Taking a function's address in a read/write section
7015 doesn't require us to define the function symbol in the
7016 executable on a global entry stub. A dynamic reloc can
7018 if (h->pointer_equality_needed
7019 && h->type != STT_GNU_IFUNC
7020 && !readonly_dynrelocs (h))
7022 h->pointer_equality_needed = 0;
7026 /* After adjust_dynamic_symbol, non_got_ref set in the
7027 non-shared case means that we have allocated space in
7028 .dynbss for the symbol and thus dyn_relocs for this
7029 symbol should be discarded.
7030 If we get here we know we are making a PLT entry for this
7031 symbol, and in an executable we'd normally resolve
7032 relocations against this symbol to the PLT entry. Allow
7033 dynamic relocs if the reference is weak, and the dynamic
7034 relocs will not cause text relocation. */
7035 else if (!h->ref_regular_nonweak
7037 && h->type != STT_GNU_IFUNC
7038 && !readonly_dynrelocs (h))
7041 /* If making a plt entry, then we don't need copy relocs. */
7046 h->plt.plist = NULL;
7048 /* If this is a weak symbol, and there is a real definition, the
7049 processor independent code will have arranged for us to see the
7050 real definition first, and we can just use the same value. */
7051 if (h->u.weakdef != NULL)
7053 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7054 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7055 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7056 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7057 if (ELIMINATE_COPY_RELOCS)
7058 h->non_got_ref = h->u.weakdef->non_got_ref;
7062 /* If we are creating a shared library, we must presume that the
7063 only references to the symbol are via the global offset table.
7064 For such cases we need not do anything here; the relocations will
7065 be handled correctly by relocate_section. */
7069 /* If there are no references to this symbol that do not use the
7070 GOT, we don't need to generate a copy reloc. */
7071 if (!h->non_got_ref)
7074 /* Don't generate a copy reloc for symbols defined in the executable. */
7075 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7078 /* If we didn't find any dynamic relocs in read-only sections, then
7079 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7080 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7086 if (h->plt.plist != NULL)
7088 /* We should never get here, but unfortunately there are versions
7089 of gcc out there that improperly (for this ABI) put initialized
7090 function pointers, vtable refs and suchlike in read-only
7091 sections. Allow them to proceed, but warn that this might
7092 break at runtime. */
7093 info->callbacks->einfo
7094 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7095 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7096 h->root.root.string);
7099 /* This is a reference to a symbol defined by a dynamic object which
7100 is not a function. */
7102 /* We must allocate the symbol in our .dynbss section, which will
7103 become part of the .bss section of the executable. There will be
7104 an entry for this symbol in the .dynsym section. The dynamic
7105 object will contain position independent code, so all references
7106 from the dynamic object to this symbol will go through the global
7107 offset table. The dynamic linker will use the .dynsym entry to
7108 determine the address it must put in the global offset table, so
7109 both the dynamic object and the regular object will refer to the
7110 same memory location for the variable. */
7112 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7113 to copy the initial value out of the dynamic object and into the
7114 runtime process image. We need to remember the offset into the
7115 .rela.bss section we are going to use. */
7116 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7118 htab->relbss->size += sizeof (Elf64_External_Rela);
7124 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7127 /* If given a function descriptor symbol, hide both the function code
7128 sym and the descriptor. */
7130 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7131 struct elf_link_hash_entry *h,
7132 bfd_boolean force_local)
7134 struct ppc_link_hash_entry *eh;
7135 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7137 eh = (struct ppc_link_hash_entry *) h;
7138 if (eh->is_func_descriptor)
7140 struct ppc_link_hash_entry *fh = eh->oh;
7145 struct ppc_link_hash_table *htab;
7148 /* We aren't supposed to use alloca in BFD because on
7149 systems which do not have alloca the version in libiberty
7150 calls xmalloc, which might cause the program to crash
7151 when it runs out of memory. This function doesn't have a
7152 return status, so there's no way to gracefully return an
7153 error. So cheat. We know that string[-1] can be safely
7154 accessed; It's either a string in an ELF string table,
7155 or allocated in an objalloc structure. */
7157 p = eh->elf.root.root.string - 1;
7160 htab = ppc_hash_table (info);
7164 fh = (struct ppc_link_hash_entry *)
7165 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7168 /* Unfortunately, if it so happens that the string we were
7169 looking for was allocated immediately before this string,
7170 then we overwrote the string terminator. That's the only
7171 reason the lookup should fail. */
7174 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7175 while (q >= eh->elf.root.root.string && *q == *p)
7177 if (q < eh->elf.root.root.string && *p == '.')
7178 fh = (struct ppc_link_hash_entry *)
7179 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7188 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7193 get_sym_h (struct elf_link_hash_entry **hp,
7194 Elf_Internal_Sym **symp,
7196 unsigned char **tls_maskp,
7197 Elf_Internal_Sym **locsymsp,
7198 unsigned long r_symndx,
7201 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7203 if (r_symndx >= symtab_hdr->sh_info)
7205 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7206 struct elf_link_hash_entry *h;
7208 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7209 h = elf_follow_link (h);
7217 if (symsecp != NULL)
7219 asection *symsec = NULL;
7220 if (h->root.type == bfd_link_hash_defined
7221 || h->root.type == bfd_link_hash_defweak)
7222 symsec = h->root.u.def.section;
7226 if (tls_maskp != NULL)
7228 struct ppc_link_hash_entry *eh;
7230 eh = (struct ppc_link_hash_entry *) h;
7231 *tls_maskp = &eh->tls_mask;
7236 Elf_Internal_Sym *sym;
7237 Elf_Internal_Sym *locsyms = *locsymsp;
7239 if (locsyms == NULL)
7241 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7242 if (locsyms == NULL)
7243 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7244 symtab_hdr->sh_info,
7245 0, NULL, NULL, NULL);
7246 if (locsyms == NULL)
7248 *locsymsp = locsyms;
7250 sym = locsyms + r_symndx;
7258 if (symsecp != NULL)
7259 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7261 if (tls_maskp != NULL)
7263 struct got_entry **lgot_ents;
7264 unsigned char *tls_mask;
7267 lgot_ents = elf_local_got_ents (ibfd);
7268 if (lgot_ents != NULL)
7270 struct plt_entry **local_plt = (struct plt_entry **)
7271 (lgot_ents + symtab_hdr->sh_info);
7272 unsigned char *lgot_masks = (unsigned char *)
7273 (local_plt + symtab_hdr->sh_info);
7274 tls_mask = &lgot_masks[r_symndx];
7276 *tls_maskp = tls_mask;
7282 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7283 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7284 type suitable for optimization, and 1 otherwise. */
7287 get_tls_mask (unsigned char **tls_maskp,
7288 unsigned long *toc_symndx,
7289 bfd_vma *toc_addend,
7290 Elf_Internal_Sym **locsymsp,
7291 const Elf_Internal_Rela *rel,
7294 unsigned long r_symndx;
7296 struct elf_link_hash_entry *h;
7297 Elf_Internal_Sym *sym;
7301 r_symndx = ELF64_R_SYM (rel->r_info);
7302 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7305 if ((*tls_maskp != NULL && **tls_maskp != 0)
7307 || ppc64_elf_section_data (sec) == NULL
7308 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7311 /* Look inside a TOC section too. */
7314 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7315 off = h->root.u.def.value;
7318 off = sym->st_value;
7319 off += rel->r_addend;
7320 BFD_ASSERT (off % 8 == 0);
7321 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7322 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7323 if (toc_symndx != NULL)
7324 *toc_symndx = r_symndx;
7325 if (toc_addend != NULL)
7326 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7327 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7329 if ((h == NULL || is_static_defined (h))
7330 && (next_r == -1 || next_r == -2))
7335 /* Find (or create) an entry in the tocsave hash table. */
7337 static struct tocsave_entry *
7338 tocsave_find (struct ppc_link_hash_table *htab,
7339 enum insert_option insert,
7340 Elf_Internal_Sym **local_syms,
7341 const Elf_Internal_Rela *irela,
7344 unsigned long r_indx;
7345 struct elf_link_hash_entry *h;
7346 Elf_Internal_Sym *sym;
7347 struct tocsave_entry ent, *p;
7349 struct tocsave_entry **slot;
7351 r_indx = ELF64_R_SYM (irela->r_info);
7352 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7354 if (ent.sec == NULL || ent.sec->output_section == NULL)
7356 (*_bfd_error_handler)
7357 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7362 ent.offset = h->root.u.def.value;
7364 ent.offset = sym->st_value;
7365 ent.offset += irela->r_addend;
7367 hash = tocsave_htab_hash (&ent);
7368 slot = ((struct tocsave_entry **)
7369 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7375 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7384 /* Adjust all global syms defined in opd sections. In gcc generated
7385 code for the old ABI, these will already have been done. */
7388 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7390 struct ppc_link_hash_entry *eh;
7392 struct _opd_sec_data *opd;
7394 if (h->root.type == bfd_link_hash_indirect)
7397 if (h->root.type != bfd_link_hash_defined
7398 && h->root.type != bfd_link_hash_defweak)
7401 eh = (struct ppc_link_hash_entry *) h;
7402 if (eh->adjust_done)
7405 sym_sec = eh->elf.root.u.def.section;
7406 opd = get_opd_info (sym_sec);
7407 if (opd != NULL && opd->adjust != NULL)
7409 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7412 /* This entry has been deleted. */
7413 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7416 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7417 if (discarded_section (dsec))
7419 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7423 eh->elf.root.u.def.value = 0;
7424 eh->elf.root.u.def.section = dsec;
7427 eh->elf.root.u.def.value += adjust;
7428 eh->adjust_done = 1;
7433 /* Handles decrementing dynamic reloc counts for the reloc specified by
7434 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7435 have already been determined. */
7438 dec_dynrel_count (bfd_vma r_info,
7440 struct bfd_link_info *info,
7441 Elf_Internal_Sym **local_syms,
7442 struct elf_link_hash_entry *h,
7443 Elf_Internal_Sym *sym)
7445 enum elf_ppc64_reloc_type r_type;
7446 asection *sym_sec = NULL;
7448 /* Can this reloc be dynamic? This switch, and later tests here
7449 should be kept in sync with the code in check_relocs. */
7450 r_type = ELF64_R_TYPE (r_info);
7456 case R_PPC64_TPREL16:
7457 case R_PPC64_TPREL16_LO:
7458 case R_PPC64_TPREL16_HI:
7459 case R_PPC64_TPREL16_HA:
7460 case R_PPC64_TPREL16_DS:
7461 case R_PPC64_TPREL16_LO_DS:
7462 case R_PPC64_TPREL16_HIGH:
7463 case R_PPC64_TPREL16_HIGHA:
7464 case R_PPC64_TPREL16_HIGHER:
7465 case R_PPC64_TPREL16_HIGHERA:
7466 case R_PPC64_TPREL16_HIGHEST:
7467 case R_PPC64_TPREL16_HIGHESTA:
7471 case R_PPC64_TPREL64:
7472 case R_PPC64_DTPMOD64:
7473 case R_PPC64_DTPREL64:
7474 case R_PPC64_ADDR64:
7478 case R_PPC64_ADDR14:
7479 case R_PPC64_ADDR14_BRNTAKEN:
7480 case R_PPC64_ADDR14_BRTAKEN:
7481 case R_PPC64_ADDR16:
7482 case R_PPC64_ADDR16_DS:
7483 case R_PPC64_ADDR16_HA:
7484 case R_PPC64_ADDR16_HI:
7485 case R_PPC64_ADDR16_HIGH:
7486 case R_PPC64_ADDR16_HIGHA:
7487 case R_PPC64_ADDR16_HIGHER:
7488 case R_PPC64_ADDR16_HIGHERA:
7489 case R_PPC64_ADDR16_HIGHEST:
7490 case R_PPC64_ADDR16_HIGHESTA:
7491 case R_PPC64_ADDR16_LO:
7492 case R_PPC64_ADDR16_LO_DS:
7493 case R_PPC64_ADDR24:
7494 case R_PPC64_ADDR32:
7495 case R_PPC64_UADDR16:
7496 case R_PPC64_UADDR32:
7497 case R_PPC64_UADDR64:
7502 if (local_syms != NULL)
7504 unsigned long r_symndx;
7505 bfd *ibfd = sec->owner;
7507 r_symndx = ELF64_R_SYM (r_info);
7508 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7513 && (must_be_dyn_reloc (info, r_type)
7515 && (!SYMBOLIC_BIND (info, h)
7516 || h->root.type == bfd_link_hash_defweak
7517 || !h->def_regular))))
7518 || (ELIMINATE_COPY_RELOCS
7521 && (h->root.type == bfd_link_hash_defweak
7522 || !h->def_regular)))
7529 struct elf_dyn_relocs *p;
7530 struct elf_dyn_relocs **pp;
7531 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7533 /* elf_gc_sweep may have already removed all dyn relocs associated
7534 with local syms for a given section. Also, symbol flags are
7535 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7536 report a dynreloc miscount. */
7537 if (*pp == NULL && info->gc_sections)
7540 while ((p = *pp) != NULL)
7544 if (!must_be_dyn_reloc (info, r_type))
7556 struct ppc_dyn_relocs *p;
7557 struct ppc_dyn_relocs **pp;
7559 bfd_boolean is_ifunc;
7561 if (local_syms == NULL)
7562 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7563 if (sym_sec == NULL)
7566 vpp = &elf_section_data (sym_sec)->local_dynrel;
7567 pp = (struct ppc_dyn_relocs **) vpp;
7569 if (*pp == NULL && info->gc_sections)
7572 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7573 while ((p = *pp) != NULL)
7575 if (p->sec == sec && p->ifunc == is_ifunc)
7586 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7588 bfd_set_error (bfd_error_bad_value);
7592 /* Remove unused Official Procedure Descriptor entries. Currently we
7593 only remove those associated with functions in discarded link-once
7594 sections, or weakly defined functions that have been overridden. It
7595 would be possible to remove many more entries for statically linked
7599 ppc64_elf_edit_opd (struct bfd_link_info *info)
7602 bfd_boolean some_edited = FALSE;
7603 asection *need_pad = NULL;
7604 struct ppc_link_hash_table *htab;
7606 htab = ppc_hash_table (info);
7610 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7613 Elf_Internal_Rela *relstart, *rel, *relend;
7614 Elf_Internal_Shdr *symtab_hdr;
7615 Elf_Internal_Sym *local_syms;
7616 struct _opd_sec_data *opd;
7617 bfd_boolean need_edit, add_aux_fields, broken;
7618 bfd_size_type cnt_16b = 0;
7620 if (!is_ppc64_elf (ibfd))
7623 sec = bfd_get_section_by_name (ibfd, ".opd");
7624 if (sec == NULL || sec->size == 0)
7627 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7630 if (sec->output_section == bfd_abs_section_ptr)
7633 /* Look through the section relocs. */
7634 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7638 symtab_hdr = &elf_symtab_hdr (ibfd);
7640 /* Read the relocations. */
7641 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7643 if (relstart == NULL)
7646 /* First run through the relocs to check they are sane, and to
7647 determine whether we need to edit this opd section. */
7651 relend = relstart + sec->reloc_count;
7652 for (rel = relstart; rel < relend; )
7654 enum elf_ppc64_reloc_type r_type;
7655 unsigned long r_symndx;
7657 struct elf_link_hash_entry *h;
7658 Elf_Internal_Sym *sym;
7661 /* .opd contains an array of 16 or 24 byte entries. We're
7662 only interested in the reloc pointing to a function entry
7664 offset = rel->r_offset;
7665 if (rel + 1 == relend
7666 || rel[1].r_offset != offset + 8)
7668 /* If someone messes with .opd alignment then after a
7669 "ld -r" we might have padding in the middle of .opd.
7670 Also, there's nothing to prevent someone putting
7671 something silly in .opd with the assembler. No .opd
7672 optimization for them! */
7674 (*_bfd_error_handler)
7675 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7680 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7681 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7683 (*_bfd_error_handler)
7684 (_("%B: unexpected reloc type %u in .opd section"),
7690 r_symndx = ELF64_R_SYM (rel->r_info);
7691 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7695 if (sym_sec == NULL || sym_sec->owner == NULL)
7697 const char *sym_name;
7699 sym_name = h->root.root.string;
7701 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7704 (*_bfd_error_handler)
7705 (_("%B: undefined sym `%s' in .opd section"),
7711 /* opd entries are always for functions defined in the
7712 current input bfd. If the symbol isn't defined in the
7713 input bfd, then we won't be using the function in this
7714 bfd; It must be defined in a linkonce section in another
7715 bfd, or is weak. It's also possible that we are
7716 discarding the function due to a linker script /DISCARD/,
7717 which we test for via the output_section. */
7718 if (sym_sec->owner != ibfd
7719 || sym_sec->output_section == bfd_abs_section_ptr)
7723 if (rel + 1 == relend
7724 || (rel + 2 < relend
7725 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7730 if (sec->size == offset + 24)
7735 if (sec->size == offset + 16)
7742 else if (rel + 1 < relend
7743 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7744 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7746 if (rel[0].r_offset == offset + 16)
7748 else if (rel[0].r_offset != offset + 24)
7755 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7757 if (!broken && (need_edit || add_aux_fields))
7759 Elf_Internal_Rela *write_rel;
7760 Elf_Internal_Shdr *rel_hdr;
7761 bfd_byte *rptr, *wptr;
7762 bfd_byte *new_contents;
7765 new_contents = NULL;
7766 amt = OPD_NDX (sec->size) * sizeof (long);
7767 opd = &ppc64_elf_section_data (sec)->u.opd;
7768 opd->adjust = bfd_zalloc (sec->owner, amt);
7769 if (opd->adjust == NULL)
7771 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7773 /* This seems a waste of time as input .opd sections are all
7774 zeros as generated by gcc, but I suppose there's no reason
7775 this will always be so. We might start putting something in
7776 the third word of .opd entries. */
7777 if ((sec->flags & SEC_IN_MEMORY) == 0)
7780 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7785 if (local_syms != NULL
7786 && symtab_hdr->contents != (unsigned char *) local_syms)
7788 if (elf_section_data (sec)->relocs != relstart)
7792 sec->contents = loc;
7793 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7796 elf_section_data (sec)->relocs = relstart;
7798 new_contents = sec->contents;
7801 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7802 if (new_contents == NULL)
7806 wptr = new_contents;
7807 rptr = sec->contents;
7808 write_rel = relstart;
7809 for (rel = relstart; rel < relend; )
7811 unsigned long r_symndx;
7813 struct elf_link_hash_entry *h;
7814 struct ppc_link_hash_entry *fdh = NULL;
7815 Elf_Internal_Sym *sym;
7817 Elf_Internal_Rela *next_rel;
7820 r_symndx = ELF64_R_SYM (rel->r_info);
7821 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7826 if (next_rel + 1 == relend
7827 || (next_rel + 2 < relend
7828 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7831 /* See if the .opd entry is full 24 byte or
7832 16 byte (with fd_aux entry overlapped with next
7835 if (next_rel == relend)
7837 if (sec->size == rel->r_offset + 16)
7840 else if (next_rel->r_offset == rel->r_offset + 16)
7844 && h->root.root.string[0] == '.')
7846 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7848 && fdh->elf.root.type != bfd_link_hash_defined
7849 && fdh->elf.root.type != bfd_link_hash_defweak)
7853 skip = (sym_sec->owner != ibfd
7854 || sym_sec->output_section == bfd_abs_section_ptr);
7857 if (fdh != NULL && sym_sec->owner == ibfd)
7859 /* Arrange for the function descriptor sym
7861 fdh->elf.root.u.def.value = 0;
7862 fdh->elf.root.u.def.section = sym_sec;
7864 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
7866 if (NO_OPD_RELOCS || info->relocatable)
7871 if (!dec_dynrel_count (rel->r_info, sec, info,
7875 if (++rel == next_rel)
7878 r_symndx = ELF64_R_SYM (rel->r_info);
7879 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7886 /* We'll be keeping this opd entry. */
7891 /* Redefine the function descriptor symbol to
7892 this location in the opd section. It is
7893 necessary to update the value here rather
7894 than using an array of adjustments as we do
7895 for local symbols, because various places
7896 in the generic ELF code use the value
7897 stored in u.def.value. */
7898 fdh->elf.root.u.def.value = wptr - new_contents;
7899 fdh->adjust_done = 1;
7902 /* Local syms are a bit tricky. We could
7903 tweak them as they can be cached, but
7904 we'd need to look through the local syms
7905 for the function descriptor sym which we
7906 don't have at the moment. So keep an
7907 array of adjustments. */
7908 adjust = (wptr - new_contents) - (rptr - sec->contents);
7909 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
7912 memcpy (wptr, rptr, opd_ent_size);
7913 wptr += opd_ent_size;
7914 if (add_aux_fields && opd_ent_size == 16)
7916 memset (wptr, '\0', 8);
7920 /* We need to adjust any reloc offsets to point to the
7922 for ( ; rel != next_rel; ++rel)
7924 rel->r_offset += adjust;
7925 if (write_rel != rel)
7926 memcpy (write_rel, rel, sizeof (*rel));
7931 rptr += opd_ent_size;
7934 sec->size = wptr - new_contents;
7935 sec->reloc_count = write_rel - relstart;
7938 free (sec->contents);
7939 sec->contents = new_contents;
7942 /* Fudge the header size too, as this is used later in
7943 elf_bfd_final_link if we are emitting relocs. */
7944 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7945 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7948 else if (elf_section_data (sec)->relocs != relstart)
7951 if (local_syms != NULL
7952 && symtab_hdr->contents != (unsigned char *) local_syms)
7954 if (!info->keep_memory)
7957 symtab_hdr->contents = (unsigned char *) local_syms;
7962 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7964 /* If we are doing a final link and the last .opd entry is just 16 byte
7965 long, add a 8 byte padding after it. */
7966 if (need_pad != NULL && !info->relocatable)
7970 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7972 BFD_ASSERT (need_pad->size > 0);
7974 p = bfd_malloc (need_pad->size + 8);
7978 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7979 p, 0, need_pad->size))
7982 need_pad->contents = p;
7983 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7987 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7991 need_pad->contents = p;
7994 memset (need_pad->contents + need_pad->size, 0, 8);
7995 need_pad->size += 8;
8001 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8004 ppc64_elf_tls_setup (struct bfd_link_info *info)
8006 struct ppc_link_hash_table *htab;
8008 htab = ppc_hash_table (info);
8012 if (abiversion (info->output_bfd) == 1)
8015 if (htab->params->no_multi_toc)
8016 htab->do_multi_toc = 0;
8017 else if (!htab->do_multi_toc)
8018 htab->params->no_multi_toc = 1;
8020 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8021 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8022 FALSE, FALSE, TRUE));
8023 /* Move dynamic linking info to the function descriptor sym. */
8024 if (htab->tls_get_addr != NULL)
8025 func_desc_adjust (&htab->tls_get_addr->elf, info);
8026 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8027 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8028 FALSE, FALSE, TRUE));
8029 if (!htab->params->no_tls_get_addr_opt)
8031 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8033 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8034 FALSE, FALSE, TRUE);
8036 func_desc_adjust (opt, info);
8037 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8038 FALSE, FALSE, TRUE);
8040 && (opt_fd->root.type == bfd_link_hash_defined
8041 || opt_fd->root.type == bfd_link_hash_defweak))
8043 /* If glibc supports an optimized __tls_get_addr call stub,
8044 signalled by the presence of __tls_get_addr_opt, and we'll
8045 be calling __tls_get_addr via a plt call stub, then
8046 make __tls_get_addr point to __tls_get_addr_opt. */
8047 tga_fd = &htab->tls_get_addr_fd->elf;
8048 if (htab->elf.dynamic_sections_created
8050 && (tga_fd->type == STT_FUNC
8051 || tga_fd->needs_plt)
8052 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8053 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8054 && tga_fd->root.type == bfd_link_hash_undefweak)))
8056 struct plt_entry *ent;
8058 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8059 if (ent->plt.refcount > 0)
8063 tga_fd->root.type = bfd_link_hash_indirect;
8064 tga_fd->root.u.i.link = &opt_fd->root;
8065 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8066 if (opt_fd->dynindx != -1)
8068 /* Use __tls_get_addr_opt in dynamic relocations. */
8069 opt_fd->dynindx = -1;
8070 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8071 opt_fd->dynstr_index);
8072 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8075 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8076 tga = &htab->tls_get_addr->elf;
8077 if (opt != NULL && tga != NULL)
8079 tga->root.type = bfd_link_hash_indirect;
8080 tga->root.u.i.link = &opt->root;
8081 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8082 _bfd_elf_link_hash_hide_symbol (info, opt,
8084 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8086 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8087 htab->tls_get_addr_fd->is_func_descriptor = 1;
8088 if (htab->tls_get_addr != NULL)
8090 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8091 htab->tls_get_addr->is_func = 1;
8097 htab->params->no_tls_get_addr_opt = TRUE;
8099 return _bfd_elf_tls_setup (info->output_bfd, info);
8102 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8106 branch_reloc_hash_match (const bfd *ibfd,
8107 const Elf_Internal_Rela *rel,
8108 const struct ppc_link_hash_entry *hash1,
8109 const struct ppc_link_hash_entry *hash2)
8111 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8112 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8113 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8115 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8117 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8118 struct elf_link_hash_entry *h;
8120 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8121 h = elf_follow_link (h);
8122 if (h == &hash1->elf || h == &hash2->elf)
8128 /* Run through all the TLS relocs looking for optimization
8129 opportunities. The linker has been hacked (see ppc64elf.em) to do
8130 a preliminary section layout so that we know the TLS segment
8131 offsets. We can't optimize earlier because some optimizations need
8132 to know the tp offset, and we need to optimize before allocating
8133 dynamic relocations. */
8136 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8140 struct ppc_link_hash_table *htab;
8141 unsigned char *toc_ref;
8144 if (info->relocatable || !info->executable)
8147 htab = ppc_hash_table (info);
8151 /* Make two passes over the relocs. On the first pass, mark toc
8152 entries involved with tls relocs, and check that tls relocs
8153 involved in setting up a tls_get_addr call are indeed followed by
8154 such a call. If they are not, we can't do any tls optimization.
8155 On the second pass twiddle tls_mask flags to notify
8156 relocate_section that optimization can be done, and adjust got
8157 and plt refcounts. */
8159 for (pass = 0; pass < 2; ++pass)
8160 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8162 Elf_Internal_Sym *locsyms = NULL;
8163 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8165 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8166 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8168 Elf_Internal_Rela *relstart, *rel, *relend;
8169 bfd_boolean found_tls_get_addr_arg = 0;
8171 /* Read the relocations. */
8172 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8174 if (relstart == NULL)
8180 relend = relstart + sec->reloc_count;
8181 for (rel = relstart; rel < relend; rel++)
8183 enum elf_ppc64_reloc_type r_type;
8184 unsigned long r_symndx;
8185 struct elf_link_hash_entry *h;
8186 Elf_Internal_Sym *sym;
8188 unsigned char *tls_mask;
8189 unsigned char tls_set, tls_clear, tls_type = 0;
8191 bfd_boolean ok_tprel, is_local;
8192 long toc_ref_index = 0;
8193 int expecting_tls_get_addr = 0;
8194 bfd_boolean ret = FALSE;
8196 r_symndx = ELF64_R_SYM (rel->r_info);
8197 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8201 if (elf_section_data (sec)->relocs != relstart)
8203 if (toc_ref != NULL)
8206 && (elf_symtab_hdr (ibfd).contents
8207 != (unsigned char *) locsyms))
8214 if (h->root.type == bfd_link_hash_defined
8215 || h->root.type == bfd_link_hash_defweak)
8216 value = h->root.u.def.value;
8217 else if (h->root.type == bfd_link_hash_undefweak)
8221 found_tls_get_addr_arg = 0;
8226 /* Symbols referenced by TLS relocs must be of type
8227 STT_TLS. So no need for .opd local sym adjust. */
8228 value = sym->st_value;
8237 && h->root.type == bfd_link_hash_undefweak)
8241 value += sym_sec->output_offset;
8242 value += sym_sec->output_section->vma;
8243 value -= htab->elf.tls_sec->vma;
8244 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8245 < (bfd_vma) 1 << 32);
8249 r_type = ELF64_R_TYPE (rel->r_info);
8250 /* If this section has old-style __tls_get_addr calls
8251 without marker relocs, then check that each
8252 __tls_get_addr call reloc is preceded by a reloc
8253 that conceivably belongs to the __tls_get_addr arg
8254 setup insn. If we don't find matching arg setup
8255 relocs, don't do any tls optimization. */
8257 && sec->has_tls_get_addr_call
8259 && (h == &htab->tls_get_addr->elf
8260 || h == &htab->tls_get_addr_fd->elf)
8261 && !found_tls_get_addr_arg
8262 && is_branch_reloc (r_type))
8264 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8265 "TLS optimization disabled\n"),
8266 ibfd, sec, rel->r_offset);
8271 found_tls_get_addr_arg = 0;
8274 case R_PPC64_GOT_TLSLD16:
8275 case R_PPC64_GOT_TLSLD16_LO:
8276 expecting_tls_get_addr = 1;
8277 found_tls_get_addr_arg = 1;
8280 case R_PPC64_GOT_TLSLD16_HI:
8281 case R_PPC64_GOT_TLSLD16_HA:
8282 /* These relocs should never be against a symbol
8283 defined in a shared lib. Leave them alone if
8284 that turns out to be the case. */
8291 tls_type = TLS_TLS | TLS_LD;
8294 case R_PPC64_GOT_TLSGD16:
8295 case R_PPC64_GOT_TLSGD16_LO:
8296 expecting_tls_get_addr = 1;
8297 found_tls_get_addr_arg = 1;
8300 case R_PPC64_GOT_TLSGD16_HI:
8301 case R_PPC64_GOT_TLSGD16_HA:
8307 tls_set = TLS_TLS | TLS_TPRELGD;
8309 tls_type = TLS_TLS | TLS_GD;
8312 case R_PPC64_GOT_TPREL16_DS:
8313 case R_PPC64_GOT_TPREL16_LO_DS:
8314 case R_PPC64_GOT_TPREL16_HI:
8315 case R_PPC64_GOT_TPREL16_HA:
8320 tls_clear = TLS_TPREL;
8321 tls_type = TLS_TLS | TLS_TPREL;
8328 found_tls_get_addr_arg = 1;
8333 case R_PPC64_TOC16_LO:
8334 if (sym_sec == NULL || sym_sec != toc)
8337 /* Mark this toc entry as referenced by a TLS
8338 code sequence. We can do that now in the
8339 case of R_PPC64_TLS, and after checking for
8340 tls_get_addr for the TOC16 relocs. */
8341 if (toc_ref == NULL)
8342 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8343 if (toc_ref == NULL)
8347 value = h->root.u.def.value;
8349 value = sym->st_value;
8350 value += rel->r_addend;
8353 BFD_ASSERT (value < toc->size
8354 && toc->output_offset % 8 == 0);
8355 toc_ref_index = (value + toc->output_offset) / 8;
8356 if (r_type == R_PPC64_TLS
8357 || r_type == R_PPC64_TLSGD
8358 || r_type == R_PPC64_TLSLD)
8360 toc_ref[toc_ref_index] = 1;
8364 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8369 expecting_tls_get_addr = 2;
8372 case R_PPC64_TPREL64:
8376 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8381 tls_set = TLS_EXPLICIT;
8382 tls_clear = TLS_TPREL;
8387 case R_PPC64_DTPMOD64:
8391 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8393 if (rel + 1 < relend
8395 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8396 && rel[1].r_offset == rel->r_offset + 8)
8400 tls_set = TLS_EXPLICIT | TLS_GD;
8403 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8412 tls_set = TLS_EXPLICIT;
8423 if (!expecting_tls_get_addr
8424 || !sec->has_tls_get_addr_call)
8427 if (rel + 1 < relend
8428 && branch_reloc_hash_match (ibfd, rel + 1,
8430 htab->tls_get_addr_fd))
8432 if (expecting_tls_get_addr == 2)
8434 /* Check for toc tls entries. */
8435 unsigned char *toc_tls;
8438 retval = get_tls_mask (&toc_tls, NULL, NULL,
8443 if (toc_tls != NULL)
8445 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8446 found_tls_get_addr_arg = 1;
8448 toc_ref[toc_ref_index] = 1;
8454 if (expecting_tls_get_addr != 1)
8457 /* Uh oh, we didn't find the expected call. We
8458 could just mark this symbol to exclude it
8459 from tls optimization but it's safer to skip
8460 the entire optimization. */
8461 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8462 "TLS optimization disabled\n"),
8463 ibfd, sec, rel->r_offset);
8468 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8470 struct plt_entry *ent;
8471 for (ent = htab->tls_get_addr->elf.plt.plist;
8474 if (ent->addend == 0)
8476 if (ent->plt.refcount > 0)
8478 ent->plt.refcount -= 1;
8479 expecting_tls_get_addr = 0;
8485 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8487 struct plt_entry *ent;
8488 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8491 if (ent->addend == 0)
8493 if (ent->plt.refcount > 0)
8494 ent->plt.refcount -= 1;
8502 if ((tls_set & TLS_EXPLICIT) == 0)
8504 struct got_entry *ent;
8506 /* Adjust got entry for this reloc. */
8510 ent = elf_local_got_ents (ibfd)[r_symndx];
8512 for (; ent != NULL; ent = ent->next)
8513 if (ent->addend == rel->r_addend
8514 && ent->owner == ibfd
8515 && ent->tls_type == tls_type)
8522 /* We managed to get rid of a got entry. */
8523 if (ent->got.refcount > 0)
8524 ent->got.refcount -= 1;
8529 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8530 we'll lose one or two dyn relocs. */
8531 if (!dec_dynrel_count (rel->r_info, sec, info,
8535 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8537 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8543 *tls_mask |= tls_set;
8544 *tls_mask &= ~tls_clear;
8547 if (elf_section_data (sec)->relocs != relstart)
8552 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8554 if (!info->keep_memory)
8557 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8561 if (toc_ref != NULL)
8566 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8567 the values of any global symbols in a toc section that has been
8568 edited. Globals in toc sections should be a rarity, so this function
8569 sets a flag if any are found in toc sections other than the one just
8570 edited, so that futher hash table traversals can be avoided. */
8572 struct adjust_toc_info
8575 unsigned long *skip;
8576 bfd_boolean global_toc_syms;
8579 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8582 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8584 struct ppc_link_hash_entry *eh;
8585 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8588 if (h->root.type != bfd_link_hash_defined
8589 && h->root.type != bfd_link_hash_defweak)
8592 eh = (struct ppc_link_hash_entry *) h;
8593 if (eh->adjust_done)
8596 if (eh->elf.root.u.def.section == toc_inf->toc)
8598 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8599 i = toc_inf->toc->rawsize >> 3;
8601 i = eh->elf.root.u.def.value >> 3;
8603 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8605 (*_bfd_error_handler)
8606 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8609 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8610 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8613 eh->elf.root.u.def.value -= toc_inf->skip[i];
8614 eh->adjust_done = 1;
8616 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8617 toc_inf->global_toc_syms = TRUE;
8622 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8625 ok_lo_toc_insn (unsigned int insn)
8627 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8628 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8629 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8630 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8631 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8632 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8633 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8634 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8635 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8636 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8637 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8638 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8639 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8640 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8641 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8643 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8644 && ((insn & 3) == 0 || (insn & 3) == 3))
8645 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8648 /* Examine all relocs referencing .toc sections in order to remove
8649 unused .toc entries. */
8652 ppc64_elf_edit_toc (struct bfd_link_info *info)
8655 struct adjust_toc_info toc_inf;
8656 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8658 htab->do_toc_opt = 1;
8659 toc_inf.global_toc_syms = TRUE;
8660 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8662 asection *toc, *sec;
8663 Elf_Internal_Shdr *symtab_hdr;
8664 Elf_Internal_Sym *local_syms;
8665 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8666 unsigned long *skip, *drop;
8667 unsigned char *used;
8668 unsigned char *keep, last, some_unused;
8670 if (!is_ppc64_elf (ibfd))
8673 toc = bfd_get_section_by_name (ibfd, ".toc");
8676 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8677 || discarded_section (toc))
8682 symtab_hdr = &elf_symtab_hdr (ibfd);
8684 /* Look at sections dropped from the final link. */
8687 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8689 if (sec->reloc_count == 0
8690 || !discarded_section (sec)
8691 || get_opd_info (sec)
8692 || (sec->flags & SEC_ALLOC) == 0
8693 || (sec->flags & SEC_DEBUGGING) != 0)
8696 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8697 if (relstart == NULL)
8700 /* Run through the relocs to see which toc entries might be
8702 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8704 enum elf_ppc64_reloc_type r_type;
8705 unsigned long r_symndx;
8707 struct elf_link_hash_entry *h;
8708 Elf_Internal_Sym *sym;
8711 r_type = ELF64_R_TYPE (rel->r_info);
8718 case R_PPC64_TOC16_LO:
8719 case R_PPC64_TOC16_HI:
8720 case R_PPC64_TOC16_HA:
8721 case R_PPC64_TOC16_DS:
8722 case R_PPC64_TOC16_LO_DS:
8726 r_symndx = ELF64_R_SYM (rel->r_info);
8727 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8735 val = h->root.u.def.value;
8737 val = sym->st_value;
8738 val += rel->r_addend;
8740 if (val >= toc->size)
8743 /* Anything in the toc ought to be aligned to 8 bytes.
8744 If not, don't mark as unused. */
8750 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8755 skip[val >> 3] = ref_from_discarded;
8758 if (elf_section_data (sec)->relocs != relstart)
8762 /* For largetoc loads of address constants, we can convert
8763 . addis rx,2,addr@got@ha
8764 . ld ry,addr@got@l(rx)
8766 . addis rx,2,addr@toc@ha
8767 . addi ry,rx,addr@toc@l
8768 when addr is within 2G of the toc pointer. This then means
8769 that the word storing "addr" in the toc is no longer needed. */
8771 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8772 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8773 && toc->reloc_count != 0)
8775 /* Read toc relocs. */
8776 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8778 if (toc_relocs == NULL)
8781 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8783 enum elf_ppc64_reloc_type r_type;
8784 unsigned long r_symndx;
8786 struct elf_link_hash_entry *h;
8787 Elf_Internal_Sym *sym;
8790 r_type = ELF64_R_TYPE (rel->r_info);
8791 if (r_type != R_PPC64_ADDR64)
8794 r_symndx = ELF64_R_SYM (rel->r_info);
8795 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8800 || discarded_section (sym_sec))
8803 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8808 if (h->type == STT_GNU_IFUNC)
8810 val = h->root.u.def.value;
8814 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8816 val = sym->st_value;
8818 val += rel->r_addend;
8819 val += sym_sec->output_section->vma + sym_sec->output_offset;
8821 /* We don't yet know the exact toc pointer value, but we
8822 know it will be somewhere in the toc section. Don't
8823 optimize if the difference from any possible toc
8824 pointer is outside [ff..f80008000, 7fff7fff]. */
8825 addr = toc->output_section->vma + TOC_BASE_OFF;
8826 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8829 addr = toc->output_section->vma + toc->output_section->rawsize;
8830 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8835 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8840 skip[rel->r_offset >> 3]
8841 |= can_optimize | ((rel - toc_relocs) << 2);
8848 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8852 if (local_syms != NULL
8853 && symtab_hdr->contents != (unsigned char *) local_syms)
8857 && elf_section_data (sec)->relocs != relstart)
8859 if (toc_relocs != NULL
8860 && elf_section_data (toc)->relocs != toc_relocs)
8867 /* Now check all kept sections that might reference the toc.
8868 Check the toc itself last. */
8869 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8872 sec = (sec == toc ? NULL
8873 : sec->next == NULL ? toc
8874 : sec->next == toc && toc->next ? toc->next
8879 if (sec->reloc_count == 0
8880 || discarded_section (sec)
8881 || get_opd_info (sec)
8882 || (sec->flags & SEC_ALLOC) == 0
8883 || (sec->flags & SEC_DEBUGGING) != 0)
8886 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8888 if (relstart == NULL)
8894 /* Mark toc entries referenced as used. */
8898 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8900 enum elf_ppc64_reloc_type r_type;
8901 unsigned long r_symndx;
8903 struct elf_link_hash_entry *h;
8904 Elf_Internal_Sym *sym;
8906 enum {no_check, check_lo, check_ha} insn_check;
8908 r_type = ELF64_R_TYPE (rel->r_info);
8912 insn_check = no_check;
8915 case R_PPC64_GOT_TLSLD16_HA:
8916 case R_PPC64_GOT_TLSGD16_HA:
8917 case R_PPC64_GOT_TPREL16_HA:
8918 case R_PPC64_GOT_DTPREL16_HA:
8919 case R_PPC64_GOT16_HA:
8920 case R_PPC64_TOC16_HA:
8921 insn_check = check_ha;
8924 case R_PPC64_GOT_TLSLD16_LO:
8925 case R_PPC64_GOT_TLSGD16_LO:
8926 case R_PPC64_GOT_TPREL16_LO_DS:
8927 case R_PPC64_GOT_DTPREL16_LO_DS:
8928 case R_PPC64_GOT16_LO:
8929 case R_PPC64_GOT16_LO_DS:
8930 case R_PPC64_TOC16_LO:
8931 case R_PPC64_TOC16_LO_DS:
8932 insn_check = check_lo;
8936 if (insn_check != no_check)
8938 bfd_vma off = rel->r_offset & ~3;
8939 unsigned char buf[4];
8942 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8947 insn = bfd_get_32 (ibfd, buf);
8948 if (insn_check == check_lo
8949 ? !ok_lo_toc_insn (insn)
8950 : ((insn & ((0x3f << 26) | 0x1f << 16))
8951 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8955 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8956 sprintf (str, "%#08x", insn);
8957 info->callbacks->einfo
8958 (_("%P: %H: toc optimization is not supported for"
8959 " %s instruction.\n"),
8960 ibfd, sec, rel->r_offset & ~3, str);
8967 case R_PPC64_TOC16_LO:
8968 case R_PPC64_TOC16_HI:
8969 case R_PPC64_TOC16_HA:
8970 case R_PPC64_TOC16_DS:
8971 case R_PPC64_TOC16_LO_DS:
8972 /* In case we're taking addresses of toc entries. */
8973 case R_PPC64_ADDR64:
8980 r_symndx = ELF64_R_SYM (rel->r_info);
8981 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8992 val = h->root.u.def.value;
8994 val = sym->st_value;
8995 val += rel->r_addend;
8997 if (val >= toc->size)
9000 if ((skip[val >> 3] & can_optimize) != 0)
9007 case R_PPC64_TOC16_HA:
9010 case R_PPC64_TOC16_LO_DS:
9011 off = rel->r_offset;
9012 off += (bfd_big_endian (ibfd) ? -2 : 3);
9013 if (!bfd_get_section_contents (ibfd, sec, &opc,
9019 if ((opc & (0x3f << 2)) == (58u << 2))
9024 /* Wrong sort of reloc, or not a ld. We may
9025 as well clear ref_from_discarded too. */
9032 /* For the toc section, we only mark as used if this
9033 entry itself isn't unused. */
9034 else if ((used[rel->r_offset >> 3]
9035 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9038 /* Do all the relocs again, to catch reference
9047 if (elf_section_data (sec)->relocs != relstart)
9051 /* Merge the used and skip arrays. Assume that TOC
9052 doublewords not appearing as either used or unused belong
9053 to to an entry more than one doubleword in size. */
9054 for (drop = skip, keep = used, last = 0, some_unused = 0;
9055 drop < skip + (toc->size + 7) / 8;
9060 *drop &= ~ref_from_discarded;
9061 if ((*drop & can_optimize) != 0)
9065 else if ((*drop & ref_from_discarded) != 0)
9068 last = ref_from_discarded;
9078 bfd_byte *contents, *src;
9080 Elf_Internal_Sym *sym;
9081 bfd_boolean local_toc_syms = FALSE;
9083 /* Shuffle the toc contents, and at the same time convert the
9084 skip array from booleans into offsets. */
9085 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9088 elf_section_data (toc)->this_hdr.contents = contents;
9090 for (src = contents, off = 0, drop = skip;
9091 src < contents + toc->size;
9094 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9099 memcpy (src - off, src, 8);
9103 toc->rawsize = toc->size;
9104 toc->size = src - contents - off;
9106 /* Adjust addends for relocs against the toc section sym,
9107 and optimize any accesses we can. */
9108 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9110 if (sec->reloc_count == 0
9111 || discarded_section (sec))
9114 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9116 if (relstart == NULL)
9119 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9121 enum elf_ppc64_reloc_type r_type;
9122 unsigned long r_symndx;
9124 struct elf_link_hash_entry *h;
9127 r_type = ELF64_R_TYPE (rel->r_info);
9134 case R_PPC64_TOC16_LO:
9135 case R_PPC64_TOC16_HI:
9136 case R_PPC64_TOC16_HA:
9137 case R_PPC64_TOC16_DS:
9138 case R_PPC64_TOC16_LO_DS:
9139 case R_PPC64_ADDR64:
9143 r_symndx = ELF64_R_SYM (rel->r_info);
9144 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9152 val = h->root.u.def.value;
9155 val = sym->st_value;
9157 local_toc_syms = TRUE;
9160 val += rel->r_addend;
9162 if (val > toc->rawsize)
9164 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9166 else if ((skip[val >> 3] & can_optimize) != 0)
9168 Elf_Internal_Rela *tocrel
9169 = toc_relocs + (skip[val >> 3] >> 2);
9170 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9174 case R_PPC64_TOC16_HA:
9175 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9178 case R_PPC64_TOC16_LO_DS:
9179 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9183 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9185 info->callbacks->einfo
9186 (_("%P: %H: %s references "
9187 "optimized away TOC entry\n"),
9188 ibfd, sec, rel->r_offset,
9189 ppc64_elf_howto_table[r_type]->name);
9190 bfd_set_error (bfd_error_bad_value);
9193 rel->r_addend = tocrel->r_addend;
9194 elf_section_data (sec)->relocs = relstart;
9198 if (h != NULL || sym->st_value != 0)
9201 rel->r_addend -= skip[val >> 3];
9202 elf_section_data (sec)->relocs = relstart;
9205 if (elf_section_data (sec)->relocs != relstart)
9209 /* We shouldn't have local or global symbols defined in the TOC,
9210 but handle them anyway. */
9211 if (local_syms != NULL)
9212 for (sym = local_syms;
9213 sym < local_syms + symtab_hdr->sh_info;
9215 if (sym->st_value != 0
9216 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9220 if (sym->st_value > toc->rawsize)
9221 i = toc->rawsize >> 3;
9223 i = sym->st_value >> 3;
9225 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9228 (*_bfd_error_handler)
9229 (_("%s defined on removed toc entry"),
9230 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9233 while ((skip[i] & (ref_from_discarded | can_optimize)));
9234 sym->st_value = (bfd_vma) i << 3;
9237 sym->st_value -= skip[i];
9238 symtab_hdr->contents = (unsigned char *) local_syms;
9241 /* Adjust any global syms defined in this toc input section. */
9242 if (toc_inf.global_toc_syms)
9245 toc_inf.skip = skip;
9246 toc_inf.global_toc_syms = FALSE;
9247 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9251 if (toc->reloc_count != 0)
9253 Elf_Internal_Shdr *rel_hdr;
9254 Elf_Internal_Rela *wrel;
9257 /* Remove unused toc relocs, and adjust those we keep. */
9258 if (toc_relocs == NULL)
9259 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9261 if (toc_relocs == NULL)
9265 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9266 if ((skip[rel->r_offset >> 3]
9267 & (ref_from_discarded | can_optimize)) == 0)
9269 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9270 wrel->r_info = rel->r_info;
9271 wrel->r_addend = rel->r_addend;
9274 else if (!dec_dynrel_count (rel->r_info, toc, info,
9275 &local_syms, NULL, NULL))
9278 elf_section_data (toc)->relocs = toc_relocs;
9279 toc->reloc_count = wrel - toc_relocs;
9280 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9281 sz = rel_hdr->sh_entsize;
9282 rel_hdr->sh_size = toc->reloc_count * sz;
9285 else if (toc_relocs != NULL
9286 && elf_section_data (toc)->relocs != toc_relocs)
9289 if (local_syms != NULL
9290 && symtab_hdr->contents != (unsigned char *) local_syms)
9292 if (!info->keep_memory)
9295 symtab_hdr->contents = (unsigned char *) local_syms;
9303 /* Return true iff input section I references the TOC using
9304 instructions limited to +/-32k offsets. */
9307 ppc64_elf_has_small_toc_reloc (asection *i)
9309 return (is_ppc64_elf (i->owner)
9310 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9313 /* Allocate space for one GOT entry. */
9316 allocate_got (struct elf_link_hash_entry *h,
9317 struct bfd_link_info *info,
9318 struct got_entry *gent)
9320 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9322 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9323 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9325 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9326 ? 2 : 1) * sizeof (Elf64_External_Rela);
9327 asection *got = ppc64_elf_tdata (gent->owner)->got;
9329 gent->got.offset = got->size;
9330 got->size += entsize;
9332 dyn = htab->elf.dynamic_sections_created;
9333 if (h->type == STT_GNU_IFUNC)
9335 htab->elf.irelplt->size += rentsize;
9336 htab->got_reli_size += rentsize;
9338 else if ((info->shared
9339 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9340 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9341 || h->root.type != bfd_link_hash_undefweak))
9343 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9344 relgot->size += rentsize;
9348 /* This function merges got entries in the same toc group. */
9351 merge_got_entries (struct got_entry **pent)
9353 struct got_entry *ent, *ent2;
9355 for (ent = *pent; ent != NULL; ent = ent->next)
9356 if (!ent->is_indirect)
9357 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9358 if (!ent2->is_indirect
9359 && ent2->addend == ent->addend
9360 && ent2->tls_type == ent->tls_type
9361 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9363 ent2->is_indirect = TRUE;
9364 ent2->got.ent = ent;
9368 /* Allocate space in .plt, .got and associated reloc sections for
9372 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9374 struct bfd_link_info *info;
9375 struct ppc_link_hash_table *htab;
9377 struct ppc_link_hash_entry *eh;
9378 struct elf_dyn_relocs *p;
9379 struct got_entry **pgent, *gent;
9381 if (h->root.type == bfd_link_hash_indirect)
9384 info = (struct bfd_link_info *) inf;
9385 htab = ppc_hash_table (info);
9389 if ((htab->elf.dynamic_sections_created
9391 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9392 || h->type == STT_GNU_IFUNC)
9394 struct plt_entry *pent;
9395 bfd_boolean doneone = FALSE;
9396 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9397 if (pent->plt.refcount > 0)
9399 if (!htab->elf.dynamic_sections_created
9400 || h->dynindx == -1)
9403 pent->plt.offset = s->size;
9404 s->size += PLT_ENTRY_SIZE (htab);
9405 s = htab->elf.irelplt;
9409 /* If this is the first .plt entry, make room for the special
9413 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9415 pent->plt.offset = s->size;
9417 /* Make room for this entry. */
9418 s->size += PLT_ENTRY_SIZE (htab);
9420 /* Make room for the .glink code. */
9423 s->size += GLINK_CALL_STUB_SIZE;
9426 /* We need bigger stubs past index 32767. */
9427 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9434 /* We also need to make an entry in the .rela.plt section. */
9435 s = htab->elf.srelplt;
9437 s->size += sizeof (Elf64_External_Rela);
9441 pent->plt.offset = (bfd_vma) -1;
9444 h->plt.plist = NULL;
9450 h->plt.plist = NULL;
9454 eh = (struct ppc_link_hash_entry *) h;
9455 /* Run through the TLS GD got entries first if we're changing them
9457 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9458 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9459 if (gent->got.refcount > 0
9460 && (gent->tls_type & TLS_GD) != 0)
9462 /* This was a GD entry that has been converted to TPREL. If
9463 there happens to be a TPREL entry we can use that one. */
9464 struct got_entry *ent;
9465 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9466 if (ent->got.refcount > 0
9467 && (ent->tls_type & TLS_TPREL) != 0
9468 && ent->addend == gent->addend
9469 && ent->owner == gent->owner)
9471 gent->got.refcount = 0;
9475 /* If not, then we'll be using our own TPREL entry. */
9476 if (gent->got.refcount != 0)
9477 gent->tls_type = TLS_TLS | TLS_TPREL;
9480 /* Remove any list entry that won't generate a word in the GOT before
9481 we call merge_got_entries. Otherwise we risk merging to empty
9483 pgent = &h->got.glist;
9484 while ((gent = *pgent) != NULL)
9485 if (gent->got.refcount > 0)
9487 if ((gent->tls_type & TLS_LD) != 0
9490 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9491 *pgent = gent->next;
9494 pgent = &gent->next;
9497 *pgent = gent->next;
9499 if (!htab->do_multi_toc)
9500 merge_got_entries (&h->got.glist);
9502 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9503 if (!gent->is_indirect)
9505 /* Make sure this symbol is output as a dynamic symbol.
9506 Undefined weak syms won't yet be marked as dynamic,
9507 nor will all TLS symbols. */
9508 if (h->dynindx == -1
9510 && h->type != STT_GNU_IFUNC
9511 && htab->elf.dynamic_sections_created)
9513 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9517 if (!is_ppc64_elf (gent->owner))
9520 allocate_got (h, info, gent);
9523 if (eh->dyn_relocs == NULL
9524 || (!htab->elf.dynamic_sections_created
9525 && h->type != STT_GNU_IFUNC))
9528 /* In the shared -Bsymbolic case, discard space allocated for
9529 dynamic pc-relative relocs against symbols which turn out to be
9530 defined in regular objects. For the normal shared case, discard
9531 space for relocs that have become local due to symbol visibility
9536 /* Relocs that use pc_count are those that appear on a call insn,
9537 or certain REL relocs (see must_be_dyn_reloc) that can be
9538 generated via assembly. We want calls to protected symbols to
9539 resolve directly to the function rather than going via the plt.
9540 If people want function pointer comparisons to work as expected
9541 then they should avoid writing weird assembly. */
9542 if (SYMBOL_CALLS_LOCAL (info, h))
9544 struct elf_dyn_relocs **pp;
9546 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9548 p->count -= p->pc_count;
9557 /* Also discard relocs on undefined weak syms with non-default
9559 if (eh->dyn_relocs != NULL
9560 && h->root.type == bfd_link_hash_undefweak)
9562 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9563 eh->dyn_relocs = NULL;
9565 /* Make sure this symbol is output as a dynamic symbol.
9566 Undefined weak syms won't yet be marked as dynamic. */
9567 else if (h->dynindx == -1
9568 && !h->forced_local)
9570 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9575 else if (h->type == STT_GNU_IFUNC)
9577 if (!h->non_got_ref)
9578 eh->dyn_relocs = NULL;
9580 else if (ELIMINATE_COPY_RELOCS)
9582 /* For the non-shared case, discard space for relocs against
9583 symbols which turn out to need copy relocs or are not
9589 /* Make sure this symbol is output as a dynamic symbol.
9590 Undefined weak syms won't yet be marked as dynamic. */
9591 if (h->dynindx == -1
9592 && !h->forced_local)
9594 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9598 /* If that succeeded, we know we'll be keeping all the
9600 if (h->dynindx != -1)
9604 eh->dyn_relocs = NULL;
9609 /* Finally, allocate space. */
9610 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9612 asection *sreloc = elf_section_data (p->sec)->sreloc;
9613 if (eh->elf.type == STT_GNU_IFUNC)
9614 sreloc = htab->elf.irelplt;
9615 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9621 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9622 to set up space for global entry stubs. These are put in glink,
9623 after the branch table. */
9626 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9628 struct bfd_link_info *info;
9629 struct ppc_link_hash_table *htab;
9630 struct plt_entry *pent;
9633 if (h->root.type == bfd_link_hash_indirect)
9636 if (!h->pointer_equality_needed)
9643 htab = ppc_hash_table (info);
9648 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9649 if (pent->plt.offset != (bfd_vma) -1
9650 && pent->addend == 0)
9652 /* For ELFv2, if this symbol is not defined in a regular file
9653 and we are not generating a shared library or pie, then we
9654 need to define the symbol in the executable on a call stub.
9655 This is to avoid text relocations. */
9656 s->size = (s->size + 15) & -16;
9657 h->root.u.def.section = s;
9658 h->root.u.def.value = s->size;
9665 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9666 read-only sections. */
9669 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9671 if (h->root.type == bfd_link_hash_indirect)
9674 if (readonly_dynrelocs (h))
9676 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9678 /* Not an error, just cut short the traversal. */
9684 /* Set the sizes of the dynamic sections. */
9687 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9688 struct bfd_link_info *info)
9690 struct ppc_link_hash_table *htab;
9695 struct got_entry *first_tlsld;
9697 htab = ppc_hash_table (info);
9701 dynobj = htab->elf.dynobj;
9705 if (htab->elf.dynamic_sections_created)
9707 /* Set the contents of the .interp section to the interpreter. */
9708 if (info->executable)
9710 s = bfd_get_linker_section (dynobj, ".interp");
9713 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9714 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9718 /* Set up .got offsets for local syms, and space for local dynamic
9720 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9722 struct got_entry **lgot_ents;
9723 struct got_entry **end_lgot_ents;
9724 struct plt_entry **local_plt;
9725 struct plt_entry **end_local_plt;
9726 unsigned char *lgot_masks;
9727 bfd_size_type locsymcount;
9728 Elf_Internal_Shdr *symtab_hdr;
9730 if (!is_ppc64_elf (ibfd))
9733 for (s = ibfd->sections; s != NULL; s = s->next)
9735 struct ppc_dyn_relocs *p;
9737 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9739 if (!bfd_is_abs_section (p->sec)
9740 && bfd_is_abs_section (p->sec->output_section))
9742 /* Input section has been discarded, either because
9743 it is a copy of a linkonce section or due to
9744 linker script /DISCARD/, so we'll be discarding
9747 else if (p->count != 0)
9749 asection *srel = elf_section_data (p->sec)->sreloc;
9751 srel = htab->elf.irelplt;
9752 srel->size += p->count * sizeof (Elf64_External_Rela);
9753 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9754 info->flags |= DF_TEXTREL;
9759 lgot_ents = elf_local_got_ents (ibfd);
9763 symtab_hdr = &elf_symtab_hdr (ibfd);
9764 locsymcount = symtab_hdr->sh_info;
9765 end_lgot_ents = lgot_ents + locsymcount;
9766 local_plt = (struct plt_entry **) end_lgot_ents;
9767 end_local_plt = local_plt + locsymcount;
9768 lgot_masks = (unsigned char *) end_local_plt;
9769 s = ppc64_elf_tdata (ibfd)->got;
9770 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9772 struct got_entry **pent, *ent;
9775 while ((ent = *pent) != NULL)
9776 if (ent->got.refcount > 0)
9778 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9780 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9785 unsigned int ent_size = 8;
9786 unsigned int rel_size = sizeof (Elf64_External_Rela);
9788 ent->got.offset = s->size;
9789 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9794 s->size += ent_size;
9795 if ((*lgot_masks & PLT_IFUNC) != 0)
9797 htab->elf.irelplt->size += rel_size;
9798 htab->got_reli_size += rel_size;
9800 else if (info->shared)
9802 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9803 srel->size += rel_size;
9812 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9813 for (; local_plt < end_local_plt; ++local_plt)
9815 struct plt_entry *ent;
9817 for (ent = *local_plt; ent != NULL; ent = ent->next)
9818 if (ent->plt.refcount > 0)
9821 ent->plt.offset = s->size;
9822 s->size += PLT_ENTRY_SIZE (htab);
9824 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9827 ent->plt.offset = (bfd_vma) -1;
9831 /* Allocate global sym .plt and .got entries, and space for global
9832 sym dynamic relocs. */
9833 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9834 /* Stash the end of glink branch table. */
9835 if (htab->glink != NULL)
9836 htab->glink->rawsize = htab->glink->size;
9838 if (!htab->opd_abi && !info->shared)
9839 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9842 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9844 struct got_entry *ent;
9846 if (!is_ppc64_elf (ibfd))
9849 ent = ppc64_tlsld_got (ibfd);
9850 if (ent->got.refcount > 0)
9852 if (!htab->do_multi_toc && first_tlsld != NULL)
9854 ent->is_indirect = TRUE;
9855 ent->got.ent = first_tlsld;
9859 if (first_tlsld == NULL)
9861 s = ppc64_elf_tdata (ibfd)->got;
9862 ent->got.offset = s->size;
9867 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9868 srel->size += sizeof (Elf64_External_Rela);
9873 ent->got.offset = (bfd_vma) -1;
9876 /* We now have determined the sizes of the various dynamic sections.
9877 Allocate memory for them. */
9879 for (s = dynobj->sections; s != NULL; s = s->next)
9881 if ((s->flags & SEC_LINKER_CREATED) == 0)
9884 if (s == htab->brlt || s == htab->relbrlt)
9885 /* These haven't been allocated yet; don't strip. */
9887 else if (s == htab->elf.sgot
9888 || s == htab->elf.splt
9889 || s == htab->elf.iplt
9891 || s == htab->dynbss)
9893 /* Strip this section if we don't need it; see the
9896 else if (s == htab->glink_eh_frame)
9898 if (!bfd_is_abs_section (s->output_section))
9899 /* Not sized yet. */
9902 else if (CONST_STRNEQ (s->name, ".rela"))
9906 if (s != htab->elf.srelplt)
9909 /* We use the reloc_count field as a counter if we need
9910 to copy relocs into the output file. */
9916 /* It's not one of our sections, so don't allocate space. */
9922 /* If we don't need this section, strip it from the
9923 output file. This is mostly to handle .rela.bss and
9924 .rela.plt. We must create both sections in
9925 create_dynamic_sections, because they must be created
9926 before the linker maps input sections to output
9927 sections. The linker does that before
9928 adjust_dynamic_symbol is called, and it is that
9929 function which decides whether anything needs to go
9930 into these sections. */
9931 s->flags |= SEC_EXCLUDE;
9935 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9938 /* Allocate memory for the section contents. We use bfd_zalloc
9939 here in case unused entries are not reclaimed before the
9940 section's contents are written out. This should not happen,
9941 but this way if it does we get a R_PPC64_NONE reloc in .rela
9942 sections instead of garbage.
9943 We also rely on the section contents being zero when writing
9945 s->contents = bfd_zalloc (dynobj, s->size);
9946 if (s->contents == NULL)
9950 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9952 if (!is_ppc64_elf (ibfd))
9955 s = ppc64_elf_tdata (ibfd)->got;
9956 if (s != NULL && s != htab->elf.sgot)
9959 s->flags |= SEC_EXCLUDE;
9962 s->contents = bfd_zalloc (ibfd, s->size);
9963 if (s->contents == NULL)
9967 s = ppc64_elf_tdata (ibfd)->relgot;
9971 s->flags |= SEC_EXCLUDE;
9974 s->contents = bfd_zalloc (ibfd, s->size);
9975 if (s->contents == NULL)
9983 if (htab->elf.dynamic_sections_created)
9985 bfd_boolean tls_opt;
9987 /* Add some entries to the .dynamic section. We fill in the
9988 values later, in ppc64_elf_finish_dynamic_sections, but we
9989 must add the entries now so that we get the correct size for
9990 the .dynamic section. The DT_DEBUG entry is filled in by the
9991 dynamic linker and used by the debugger. */
9992 #define add_dynamic_entry(TAG, VAL) \
9993 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9995 if (info->executable)
9997 if (!add_dynamic_entry (DT_DEBUG, 0))
10001 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10003 if (!add_dynamic_entry (DT_PLTGOT, 0)
10004 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10005 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10006 || !add_dynamic_entry (DT_JMPREL, 0)
10007 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10011 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10013 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10014 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10018 tls_opt = (!htab->params->no_tls_get_addr_opt
10019 && htab->tls_get_addr_fd != NULL
10020 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10021 if (tls_opt || !htab->opd_abi)
10023 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10029 if (!add_dynamic_entry (DT_RELA, 0)
10030 || !add_dynamic_entry (DT_RELASZ, 0)
10031 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10034 /* If any dynamic relocs apply to a read-only section,
10035 then we need a DT_TEXTREL entry. */
10036 if ((info->flags & DF_TEXTREL) == 0)
10037 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10039 if ((info->flags & DF_TEXTREL) != 0)
10041 if (!add_dynamic_entry (DT_TEXTREL, 0))
10046 #undef add_dynamic_entry
10051 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10054 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10056 if (h->plt.plist != NULL
10058 && !h->pointer_equality_needed)
10061 return _bfd_elf_hash_symbol (h);
10064 /* Determine the type of stub needed, if any, for a call. */
10066 static inline enum ppc_stub_type
10067 ppc_type_of_stub (asection *input_sec,
10068 const Elf_Internal_Rela *rel,
10069 struct ppc_link_hash_entry **hash,
10070 struct plt_entry **plt_ent,
10071 bfd_vma destination,
10072 unsigned long local_off)
10074 struct ppc_link_hash_entry *h = *hash;
10076 bfd_vma branch_offset;
10077 bfd_vma max_branch_offset;
10078 enum elf_ppc64_reloc_type r_type;
10082 struct plt_entry *ent;
10083 struct ppc_link_hash_entry *fdh = h;
10085 && h->oh->is_func_descriptor)
10087 fdh = ppc_follow_link (h->oh);
10091 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10092 if (ent->addend == rel->r_addend
10093 && ent->plt.offset != (bfd_vma) -1)
10096 return ppc_stub_plt_call;
10099 /* Here, we know we don't have a plt entry. If we don't have a
10100 either a defined function descriptor or a defined entry symbol
10101 in a regular object file, then it is pointless trying to make
10102 any other type of stub. */
10103 if (!is_static_defined (&fdh->elf)
10104 && !is_static_defined (&h->elf))
10105 return ppc_stub_none;
10107 else if (elf_local_got_ents (input_sec->owner) != NULL)
10109 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10110 struct plt_entry **local_plt = (struct plt_entry **)
10111 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10112 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10114 if (local_plt[r_symndx] != NULL)
10116 struct plt_entry *ent;
10118 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10119 if (ent->addend == rel->r_addend
10120 && ent->plt.offset != (bfd_vma) -1)
10123 return ppc_stub_plt_call;
10128 /* Determine where the call point is. */
10129 location = (input_sec->output_offset
10130 + input_sec->output_section->vma
10133 branch_offset = destination - location;
10134 r_type = ELF64_R_TYPE (rel->r_info);
10136 /* Determine if a long branch stub is needed. */
10137 max_branch_offset = 1 << 25;
10138 if (r_type != R_PPC64_REL24)
10139 max_branch_offset = 1 << 15;
10141 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10142 /* We need a stub. Figure out whether a long_branch or plt_branch
10143 is needed later. */
10144 return ppc_stub_long_branch;
10146 return ppc_stub_none;
10149 /* With power7 weakly ordered memory model, it is possible for ld.so
10150 to update a plt entry in one thread and have another thread see a
10151 stale zero toc entry. To avoid this we need some sort of acquire
10152 barrier in the call stub. One solution is to make the load of the
10153 toc word seem to appear to depend on the load of the function entry
10154 word. Another solution is to test for r2 being zero, and branch to
10155 the appropriate glink entry if so.
10157 . fake dep barrier compare
10158 . ld 12,xxx(2) ld 12,xxx(2)
10159 . mtctr 12 mtctr 12
10160 . xor 11,12,12 ld 2,xxx+8(2)
10161 . add 2,2,11 cmpldi 2,0
10162 . ld 2,xxx+8(2) bnectr+
10163 . bctr b <glink_entry>
10165 The solution involving the compare turns out to be faster, so
10166 that's what we use unless the branch won't reach. */
10168 #define ALWAYS_USE_FAKE_DEP 0
10169 #define ALWAYS_EMIT_R2SAVE 0
10171 #define PPC_LO(v) ((v) & 0xffff)
10172 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10173 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10175 static inline unsigned int
10176 plt_stub_size (struct ppc_link_hash_table *htab,
10177 struct ppc_stub_hash_entry *stub_entry,
10180 unsigned size = 12;
10182 if (ALWAYS_EMIT_R2SAVE
10183 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10185 if (PPC_HA (off) != 0)
10190 if (htab->params->plt_static_chain)
10192 if (htab->params->plt_thread_safe)
10194 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10197 if (stub_entry->h != NULL
10198 && (stub_entry->h == htab->tls_get_addr_fd
10199 || stub_entry->h == htab->tls_get_addr)
10200 && !htab->params->no_tls_get_addr_opt)
10205 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10206 then return the padding needed to do so. */
10207 static inline unsigned int
10208 plt_stub_pad (struct ppc_link_hash_table *htab,
10209 struct ppc_stub_hash_entry *stub_entry,
10212 int stub_align = 1 << htab->params->plt_stub_align;
10213 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10214 bfd_vma stub_off = stub_entry->stub_sec->size;
10216 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10217 > ((stub_size - 1) & -stub_align))
10218 return stub_align - (stub_off & (stub_align - 1));
10222 /* Build a .plt call stub. */
10224 static inline bfd_byte *
10225 build_plt_stub (struct ppc_link_hash_table *htab,
10226 struct ppc_stub_hash_entry *stub_entry,
10227 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10229 bfd *obfd = htab->params->stub_bfd;
10230 bfd_boolean plt_load_toc = htab->opd_abi;
10231 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10232 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10233 bfd_boolean use_fake_dep = plt_thread_safe;
10234 bfd_vma cmp_branch_off = 0;
10236 if (!ALWAYS_USE_FAKE_DEP
10239 && !(stub_entry->h != NULL
10240 && (stub_entry->h == htab->tls_get_addr_fd
10241 || stub_entry->h == htab->tls_get_addr)
10242 && !htab->params->no_tls_get_addr_opt))
10244 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10245 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10246 / PLT_ENTRY_SIZE (htab));
10247 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10250 if (pltindex > 32768)
10251 glinkoff += (pltindex - 32768) * 4;
10253 + htab->glink->output_offset
10254 + htab->glink->output_section->vma);
10255 from = (p - stub_entry->stub_sec->contents
10256 + 4 * (ALWAYS_EMIT_R2SAVE
10257 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10258 + 4 * (PPC_HA (offset) != 0)
10259 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10260 != PPC_HA (offset))
10261 + 4 * (plt_static_chain != 0)
10263 + stub_entry->stub_sec->output_offset
10264 + stub_entry->stub_sec->output_section->vma);
10265 cmp_branch_off = to - from;
10266 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10269 if (PPC_HA (offset) != 0)
10273 if (ALWAYS_EMIT_R2SAVE
10274 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10275 r[0].r_offset += 4;
10276 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10277 r[1].r_offset = r[0].r_offset + 4;
10278 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10279 r[1].r_addend = r[0].r_addend;
10282 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10284 r[2].r_offset = r[1].r_offset + 4;
10285 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10286 r[2].r_addend = r[0].r_addend;
10290 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10291 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10292 r[2].r_addend = r[0].r_addend + 8;
10293 if (plt_static_chain)
10295 r[3].r_offset = r[2].r_offset + 4;
10296 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10297 r[3].r_addend = r[0].r_addend + 16;
10302 if (ALWAYS_EMIT_R2SAVE
10303 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10304 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10307 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10308 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10312 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10313 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10316 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10318 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10321 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10326 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10327 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10329 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10330 if (plt_static_chain)
10331 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10338 if (ALWAYS_EMIT_R2SAVE
10339 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10340 r[0].r_offset += 4;
10341 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10344 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10346 r[1].r_offset = r[0].r_offset + 4;
10347 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10348 r[1].r_addend = r[0].r_addend;
10352 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10353 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10354 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10355 if (plt_static_chain)
10357 r[2].r_offset = r[1].r_offset + 4;
10358 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10359 r[2].r_addend = r[0].r_addend + 8;
10364 if (ALWAYS_EMIT_R2SAVE
10365 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10366 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10367 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10369 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10371 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10374 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10379 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10380 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10382 if (plt_static_chain)
10383 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10384 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10387 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10389 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10390 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10391 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10394 bfd_put_32 (obfd, BCTR, p), p += 4;
10398 /* Build a special .plt call stub for __tls_get_addr. */
10400 #define LD_R11_0R3 0xe9630000
10401 #define LD_R12_0R3 0xe9830000
10402 #define MR_R0_R3 0x7c601b78
10403 #define CMPDI_R11_0 0x2c2b0000
10404 #define ADD_R3_R12_R13 0x7c6c6a14
10405 #define BEQLR 0x4d820020
10406 #define MR_R3_R0 0x7c030378
10407 #define STD_R11_0R1 0xf9610000
10408 #define BCTRL 0x4e800421
10409 #define LD_R11_0R1 0xe9610000
10410 #define MTLR_R11 0x7d6803a6
10412 static inline bfd_byte *
10413 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10414 struct ppc_stub_hash_entry *stub_entry,
10415 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10417 bfd *obfd = htab->params->stub_bfd;
10419 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10420 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10421 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10422 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10423 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10424 bfd_put_32 (obfd, BEQLR, p), p += 4;
10425 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10426 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10427 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10430 r[0].r_offset += 9 * 4;
10431 p = build_plt_stub (htab, stub_entry, p, offset, r);
10432 bfd_put_32 (obfd, BCTRL, p - 4);
10434 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10435 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10436 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10437 bfd_put_32 (obfd, BLR, p), p += 4;
10442 static Elf_Internal_Rela *
10443 get_relocs (asection *sec, int count)
10445 Elf_Internal_Rela *relocs;
10446 struct bfd_elf_section_data *elfsec_data;
10448 elfsec_data = elf_section_data (sec);
10449 relocs = elfsec_data->relocs;
10450 if (relocs == NULL)
10452 bfd_size_type relsize;
10453 relsize = sec->reloc_count * sizeof (*relocs);
10454 relocs = bfd_alloc (sec->owner, relsize);
10455 if (relocs == NULL)
10457 elfsec_data->relocs = relocs;
10458 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10459 sizeof (Elf_Internal_Shdr));
10460 if (elfsec_data->rela.hdr == NULL)
10462 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10463 * sizeof (Elf64_External_Rela));
10464 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10465 sec->reloc_count = 0;
10467 relocs += sec->reloc_count;
10468 sec->reloc_count += count;
10473 get_r2off (struct bfd_link_info *info,
10474 struct ppc_stub_hash_entry *stub_entry)
10476 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10477 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10481 /* Support linking -R objects. Get the toc pointer from the
10484 if (!htab->opd_abi)
10486 asection *opd = stub_entry->h->elf.root.u.def.section;
10487 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10489 if (strcmp (opd->name, ".opd") != 0
10490 || opd->reloc_count != 0)
10492 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10493 stub_entry->h->elf.root.root.string);
10494 bfd_set_error (bfd_error_bad_value);
10497 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10499 r2off = bfd_get_64 (opd->owner, buf);
10500 r2off -= elf_gp (info->output_bfd);
10502 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10507 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10509 struct ppc_stub_hash_entry *stub_entry;
10510 struct ppc_branch_hash_entry *br_entry;
10511 struct bfd_link_info *info;
10512 struct ppc_link_hash_table *htab;
10517 Elf_Internal_Rela *r;
10520 /* Massage our args to the form they really have. */
10521 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10524 htab = ppc_hash_table (info);
10528 /* Make a note of the offset within the stubs for this entry. */
10529 stub_entry->stub_offset = stub_entry->stub_sec->size;
10530 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10532 htab->stub_count[stub_entry->stub_type - 1] += 1;
10533 switch (stub_entry->stub_type)
10535 case ppc_stub_long_branch:
10536 case ppc_stub_long_branch_r2off:
10537 /* Branches are relative. This is where we are going to. */
10538 dest = (stub_entry->target_value
10539 + stub_entry->target_section->output_offset
10540 + stub_entry->target_section->output_section->vma);
10541 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10544 /* And this is where we are coming from. */
10545 off -= (stub_entry->stub_offset
10546 + stub_entry->stub_sec->output_offset
10547 + stub_entry->stub_sec->output_section->vma);
10550 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10552 bfd_vma r2off = get_r2off (info, stub_entry);
10556 htab->stub_error = TRUE;
10559 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10562 if (PPC_HA (r2off) != 0)
10565 bfd_put_32 (htab->params->stub_bfd,
10566 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10569 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10573 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10575 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10577 info->callbacks->einfo
10578 (_("%P: long branch stub `%s' offset overflow\n"),
10579 stub_entry->root.string);
10580 htab->stub_error = TRUE;
10584 if (info->emitrelocations)
10586 r = get_relocs (stub_entry->stub_sec, 1);
10589 r->r_offset = loc - stub_entry->stub_sec->contents;
10590 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10591 r->r_addend = dest;
10592 if (stub_entry->h != NULL)
10594 struct elf_link_hash_entry **hashes;
10595 unsigned long symndx;
10596 struct ppc_link_hash_entry *h;
10598 hashes = elf_sym_hashes (htab->params->stub_bfd);
10599 if (hashes == NULL)
10601 bfd_size_type hsize;
10603 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10604 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10605 if (hashes == NULL)
10607 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10608 htab->stub_globals = 1;
10610 symndx = htab->stub_globals++;
10612 hashes[symndx] = &h->elf;
10613 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10614 if (h->oh != NULL && h->oh->is_func)
10615 h = ppc_follow_link (h->oh);
10616 if (h->elf.root.u.def.section != stub_entry->target_section)
10617 /* H is an opd symbol. The addend must be zero. */
10621 off = (h->elf.root.u.def.value
10622 + h->elf.root.u.def.section->output_offset
10623 + h->elf.root.u.def.section->output_section->vma);
10624 r->r_addend -= off;
10630 case ppc_stub_plt_branch:
10631 case ppc_stub_plt_branch_r2off:
10632 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10633 stub_entry->root.string + 9,
10635 if (br_entry == NULL)
10637 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10638 stub_entry->root.string);
10639 htab->stub_error = TRUE;
10643 dest = (stub_entry->target_value
10644 + stub_entry->target_section->output_offset
10645 + stub_entry->target_section->output_section->vma);
10646 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10647 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10649 bfd_put_64 (htab->brlt->owner, dest,
10650 htab->brlt->contents + br_entry->offset);
10652 if (br_entry->iter == htab->stub_iteration)
10654 br_entry->iter = 0;
10656 if (htab->relbrlt != NULL)
10658 /* Create a reloc for the branch lookup table entry. */
10659 Elf_Internal_Rela rela;
10662 rela.r_offset = (br_entry->offset
10663 + htab->brlt->output_offset
10664 + htab->brlt->output_section->vma);
10665 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10666 rela.r_addend = dest;
10668 rl = htab->relbrlt->contents;
10669 rl += (htab->relbrlt->reloc_count++
10670 * sizeof (Elf64_External_Rela));
10671 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10673 else if (info->emitrelocations)
10675 r = get_relocs (htab->brlt, 1);
10678 /* brlt, being SEC_LINKER_CREATED does not go through the
10679 normal reloc processing. Symbols and offsets are not
10680 translated from input file to output file form, so
10681 set up the offset per the output file. */
10682 r->r_offset = (br_entry->offset
10683 + htab->brlt->output_offset
10684 + htab->brlt->output_section->vma);
10685 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10686 r->r_addend = dest;
10690 dest = (br_entry->offset
10691 + htab->brlt->output_offset
10692 + htab->brlt->output_section->vma);
10695 - elf_gp (htab->brlt->output_section->owner)
10696 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10698 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10700 info->callbacks->einfo
10701 (_("%P: linkage table error against `%T'\n"),
10702 stub_entry->root.string);
10703 bfd_set_error (bfd_error_bad_value);
10704 htab->stub_error = TRUE;
10708 if (info->emitrelocations)
10710 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10713 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10714 if (bfd_big_endian (info->output_bfd))
10715 r[0].r_offset += 2;
10716 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10717 r[0].r_offset += 4;
10718 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10719 r[0].r_addend = dest;
10720 if (PPC_HA (off) != 0)
10722 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10723 r[1].r_offset = r[0].r_offset + 4;
10724 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10725 r[1].r_addend = r[0].r_addend;
10729 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10731 if (PPC_HA (off) != 0)
10734 bfd_put_32 (htab->params->stub_bfd,
10735 ADDIS_R12_R2 | PPC_HA (off), loc);
10737 bfd_put_32 (htab->params->stub_bfd,
10738 LD_R12_0R12 | PPC_LO (off), loc);
10743 bfd_put_32 (htab->params->stub_bfd,
10744 LD_R12_0R2 | PPC_LO (off), loc);
10749 bfd_vma r2off = get_r2off (info, stub_entry);
10751 if (r2off == 0 && htab->opd_abi)
10753 htab->stub_error = TRUE;
10757 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10760 if (PPC_HA (off) != 0)
10763 bfd_put_32 (htab->params->stub_bfd,
10764 ADDIS_R12_R2 | PPC_HA (off), loc);
10766 bfd_put_32 (htab->params->stub_bfd,
10767 LD_R12_0R12 | PPC_LO (off), loc);
10770 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10772 if (PPC_HA (r2off) != 0)
10776 bfd_put_32 (htab->params->stub_bfd,
10777 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10779 if (PPC_LO (r2off) != 0)
10783 bfd_put_32 (htab->params->stub_bfd,
10784 ADDI_R2_R2 | PPC_LO (r2off), loc);
10788 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10790 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10793 case ppc_stub_plt_call:
10794 case ppc_stub_plt_call_r2save:
10795 if (stub_entry->h != NULL
10796 && stub_entry->h->is_func_descriptor
10797 && stub_entry->h->oh != NULL)
10799 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10801 /* If the old-ABI "dot-symbol" is undefined make it weak so
10802 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10803 FIXME: We used to define the symbol on one of the call
10804 stubs instead, which is why we test symbol section id
10805 against htab->top_id in various places. Likely all
10806 these checks could now disappear. */
10807 if (fh->elf.root.type == bfd_link_hash_undefined)
10808 fh->elf.root.type = bfd_link_hash_undefweak;
10809 /* Stop undo_symbol_twiddle changing it back to undefined. */
10810 fh->was_undefined = 0;
10813 /* Now build the stub. */
10814 dest = stub_entry->plt_ent->plt.offset & ~1;
10815 if (dest >= (bfd_vma) -2)
10818 plt = htab->elf.splt;
10819 if (!htab->elf.dynamic_sections_created
10820 || stub_entry->h == NULL
10821 || stub_entry->h->elf.dynindx == -1)
10822 plt = htab->elf.iplt;
10824 dest += plt->output_offset + plt->output_section->vma;
10826 if (stub_entry->h == NULL
10827 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10829 Elf_Internal_Rela rela;
10832 rela.r_offset = dest;
10834 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10836 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10837 rela.r_addend = (stub_entry->target_value
10838 + stub_entry->target_section->output_offset
10839 + stub_entry->target_section->output_section->vma);
10841 rl = (htab->elf.irelplt->contents
10842 + (htab->elf.irelplt->reloc_count++
10843 * sizeof (Elf64_External_Rela)));
10844 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10845 stub_entry->plt_ent->plt.offset |= 1;
10849 - elf_gp (plt->output_section->owner)
10850 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10852 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10854 info->callbacks->einfo
10855 (_("%P: linkage table error against `%T'\n"),
10856 stub_entry->h != NULL
10857 ? stub_entry->h->elf.root.root.string
10859 bfd_set_error (bfd_error_bad_value);
10860 htab->stub_error = TRUE;
10864 if (htab->params->plt_stub_align != 0)
10866 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10868 stub_entry->stub_sec->size += pad;
10869 stub_entry->stub_offset = stub_entry->stub_sec->size;
10874 if (info->emitrelocations)
10876 r = get_relocs (stub_entry->stub_sec,
10877 ((PPC_HA (off) != 0)
10879 ? 2 + (htab->params->plt_static_chain
10880 && PPC_HA (off + 16) == PPC_HA (off))
10884 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10885 if (bfd_big_endian (info->output_bfd))
10886 r[0].r_offset += 2;
10887 r[0].r_addend = dest;
10889 if (stub_entry->h != NULL
10890 && (stub_entry->h == htab->tls_get_addr_fd
10891 || stub_entry->h == htab->tls_get_addr)
10892 && !htab->params->no_tls_get_addr_opt)
10893 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10895 p = build_plt_stub (htab, stub_entry, loc, off, r);
10904 stub_entry->stub_sec->size += size;
10906 if (htab->params->emit_stub_syms)
10908 struct elf_link_hash_entry *h;
10911 const char *const stub_str[] = { "long_branch",
10912 "long_branch_r2off",
10914 "plt_branch_r2off",
10918 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10919 len2 = strlen (stub_entry->root.string);
10920 name = bfd_malloc (len1 + len2 + 2);
10923 memcpy (name, stub_entry->root.string, 9);
10924 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10925 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10926 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10929 if (h->root.type == bfd_link_hash_new)
10931 h->root.type = bfd_link_hash_defined;
10932 h->root.u.def.section = stub_entry->stub_sec;
10933 h->root.u.def.value = stub_entry->stub_offset;
10934 h->ref_regular = 1;
10935 h->def_regular = 1;
10936 h->ref_regular_nonweak = 1;
10937 h->forced_local = 1;
10945 /* As above, but don't actually build the stub. Just bump offset so
10946 we know stub section sizes, and select plt_branch stubs where
10947 long_branch stubs won't do. */
10950 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10952 struct ppc_stub_hash_entry *stub_entry;
10953 struct bfd_link_info *info;
10954 struct ppc_link_hash_table *htab;
10958 /* Massage our args to the form they really have. */
10959 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10962 htab = ppc_hash_table (info);
10966 if (stub_entry->stub_type == ppc_stub_plt_call
10967 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10970 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10971 if (off >= (bfd_vma) -2)
10973 plt = htab->elf.splt;
10974 if (!htab->elf.dynamic_sections_created
10975 || stub_entry->h == NULL
10976 || stub_entry->h->elf.dynindx == -1)
10977 plt = htab->elf.iplt;
10978 off += (plt->output_offset
10979 + plt->output_section->vma
10980 - elf_gp (plt->output_section->owner)
10981 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10983 size = plt_stub_size (htab, stub_entry, off);
10984 if (htab->params->plt_stub_align)
10985 size += plt_stub_pad (htab, stub_entry, off);
10986 if (info->emitrelocations)
10988 stub_entry->stub_sec->reloc_count
10989 += ((PPC_HA (off) != 0)
10991 ? 2 + (htab->params->plt_static_chain
10992 && PPC_HA (off + 16) == PPC_HA (off))
10994 stub_entry->stub_sec->flags |= SEC_RELOC;
10999 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11002 bfd_vma local_off = 0;
11004 off = (stub_entry->target_value
11005 + stub_entry->target_section->output_offset
11006 + stub_entry->target_section->output_section->vma);
11007 off -= (stub_entry->stub_sec->size
11008 + stub_entry->stub_sec->output_offset
11009 + stub_entry->stub_sec->output_section->vma);
11011 /* Reset the stub type from the plt variant in case we now
11012 can reach with a shorter stub. */
11013 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11014 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11017 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11019 r2off = get_r2off (info, stub_entry);
11020 if (r2off == 0 && htab->opd_abi)
11022 htab->stub_error = TRUE;
11026 if (PPC_HA (r2off) != 0)
11031 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11033 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11034 Do the same for -R objects without function descriptors. */
11035 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11036 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11039 struct ppc_branch_hash_entry *br_entry;
11041 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11042 stub_entry->root.string + 9,
11044 if (br_entry == NULL)
11046 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11047 stub_entry->root.string);
11048 htab->stub_error = TRUE;
11052 if (br_entry->iter != htab->stub_iteration)
11054 br_entry->iter = htab->stub_iteration;
11055 br_entry->offset = htab->brlt->size;
11056 htab->brlt->size += 8;
11058 if (htab->relbrlt != NULL)
11059 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11060 else if (info->emitrelocations)
11062 htab->brlt->reloc_count += 1;
11063 htab->brlt->flags |= SEC_RELOC;
11067 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11068 off = (br_entry->offset
11069 + htab->brlt->output_offset
11070 + htab->brlt->output_section->vma
11071 - elf_gp (htab->brlt->output_section->owner)
11072 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11074 if (info->emitrelocations)
11076 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11077 stub_entry->stub_sec->flags |= SEC_RELOC;
11080 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11083 if (PPC_HA (off) != 0)
11089 if (PPC_HA (off) != 0)
11092 if (PPC_HA (r2off) != 0)
11094 if (PPC_LO (r2off) != 0)
11098 else if (info->emitrelocations)
11100 stub_entry->stub_sec->reloc_count += 1;
11101 stub_entry->stub_sec->flags |= SEC_RELOC;
11105 stub_entry->stub_sec->size += size;
11109 /* Set up various things so that we can make a list of input sections
11110 for each output section included in the link. Returns -1 on error,
11111 0 when no stubs will be needed, and 1 on success. */
11114 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11117 int top_id, top_index, id;
11119 asection **input_list;
11121 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11126 /* Find the top input section id. */
11127 for (input_bfd = info->input_bfds, top_id = 3;
11129 input_bfd = input_bfd->link.next)
11131 for (section = input_bfd->sections;
11133 section = section->next)
11135 if (top_id < section->id)
11136 top_id = section->id;
11140 htab->top_id = top_id;
11141 amt = sizeof (struct map_stub) * (top_id + 1);
11142 htab->stub_group = bfd_zmalloc (amt);
11143 if (htab->stub_group == NULL)
11146 /* Set toc_off for com, und, abs and ind sections. */
11147 for (id = 0; id < 3; id++)
11148 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11150 /* We can't use output_bfd->section_count here to find the top output
11151 section index as some sections may have been removed, and
11152 strip_excluded_output_sections doesn't renumber the indices. */
11153 for (section = info->output_bfd->sections, top_index = 0;
11155 section = section->next)
11157 if (top_index < section->index)
11158 top_index = section->index;
11161 htab->top_index = top_index;
11162 amt = sizeof (asection *) * (top_index + 1);
11163 input_list = bfd_zmalloc (amt);
11164 htab->input_list = input_list;
11165 if (input_list == NULL)
11171 /* Set up for first pass at multitoc partitioning. */
11174 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11176 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11178 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11179 htab->toc_bfd = NULL;
11180 htab->toc_first_sec = NULL;
11183 /* The linker repeatedly calls this function for each TOC input section
11184 and linker generated GOT section. Group input bfds such that the toc
11185 within a group is less than 64k in size. */
11188 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11190 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11191 bfd_vma addr, off, limit;
11196 if (!htab->second_toc_pass)
11198 /* Keep track of the first .toc or .got section for this input bfd. */
11199 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11203 htab->toc_bfd = isec->owner;
11204 htab->toc_first_sec = isec;
11207 addr = isec->output_offset + isec->output_section->vma;
11208 off = addr - htab->toc_curr;
11209 limit = 0x80008000;
11210 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11212 if (off + isec->size > limit)
11214 addr = (htab->toc_first_sec->output_offset
11215 + htab->toc_first_sec->output_section->vma);
11216 htab->toc_curr = addr;
11219 /* toc_curr is the base address of this toc group. Set elf_gp
11220 for the input section to be the offset relative to the
11221 output toc base plus 0x8000. Making the input elf_gp an
11222 offset allows us to move the toc as a whole without
11223 recalculating input elf_gp. */
11224 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11225 off += TOC_BASE_OFF;
11227 /* Die if someone uses a linker script that doesn't keep input
11228 file .toc and .got together. */
11230 && elf_gp (isec->owner) != 0
11231 && elf_gp (isec->owner) != off)
11234 elf_gp (isec->owner) = off;
11238 /* During the second pass toc_first_sec points to the start of
11239 a toc group, and toc_curr is used to track the old elf_gp.
11240 We use toc_bfd to ensure we only look at each bfd once. */
11241 if (htab->toc_bfd == isec->owner)
11243 htab->toc_bfd = isec->owner;
11245 if (htab->toc_first_sec == NULL
11246 || htab->toc_curr != elf_gp (isec->owner))
11248 htab->toc_curr = elf_gp (isec->owner);
11249 htab->toc_first_sec = isec;
11251 addr = (htab->toc_first_sec->output_offset
11252 + htab->toc_first_sec->output_section->vma);
11253 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11254 elf_gp (isec->owner) = off;
11259 /* Called via elf_link_hash_traverse to merge GOT entries for global
11263 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11265 if (h->root.type == bfd_link_hash_indirect)
11268 merge_got_entries (&h->got.glist);
11273 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11277 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11279 struct got_entry *gent;
11281 if (h->root.type == bfd_link_hash_indirect)
11284 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11285 if (!gent->is_indirect)
11286 allocate_got (h, (struct bfd_link_info *) inf, gent);
11290 /* Called on the first multitoc pass after the last call to
11291 ppc64_elf_next_toc_section. This function removes duplicate GOT
11295 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11297 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11298 struct bfd *ibfd, *ibfd2;
11299 bfd_boolean done_something;
11301 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11303 if (!htab->do_multi_toc)
11306 /* Merge global sym got entries within a toc group. */
11307 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11309 /* And tlsld_got. */
11310 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11312 struct got_entry *ent, *ent2;
11314 if (!is_ppc64_elf (ibfd))
11317 ent = ppc64_tlsld_got (ibfd);
11318 if (!ent->is_indirect
11319 && ent->got.offset != (bfd_vma) -1)
11321 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11323 if (!is_ppc64_elf (ibfd2))
11326 ent2 = ppc64_tlsld_got (ibfd2);
11327 if (!ent2->is_indirect
11328 && ent2->got.offset != (bfd_vma) -1
11329 && elf_gp (ibfd2) == elf_gp (ibfd))
11331 ent2->is_indirect = TRUE;
11332 ent2->got.ent = ent;
11338 /* Zap sizes of got sections. */
11339 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11340 htab->elf.irelplt->size -= htab->got_reli_size;
11341 htab->got_reli_size = 0;
11343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11345 asection *got, *relgot;
11347 if (!is_ppc64_elf (ibfd))
11350 got = ppc64_elf_tdata (ibfd)->got;
11353 got->rawsize = got->size;
11355 relgot = ppc64_elf_tdata (ibfd)->relgot;
11356 relgot->rawsize = relgot->size;
11361 /* Now reallocate the got, local syms first. We don't need to
11362 allocate section contents again since we never increase size. */
11363 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11365 struct got_entry **lgot_ents;
11366 struct got_entry **end_lgot_ents;
11367 struct plt_entry **local_plt;
11368 struct plt_entry **end_local_plt;
11369 unsigned char *lgot_masks;
11370 bfd_size_type locsymcount;
11371 Elf_Internal_Shdr *symtab_hdr;
11374 if (!is_ppc64_elf (ibfd))
11377 lgot_ents = elf_local_got_ents (ibfd);
11381 symtab_hdr = &elf_symtab_hdr (ibfd);
11382 locsymcount = symtab_hdr->sh_info;
11383 end_lgot_ents = lgot_ents + locsymcount;
11384 local_plt = (struct plt_entry **) end_lgot_ents;
11385 end_local_plt = local_plt + locsymcount;
11386 lgot_masks = (unsigned char *) end_local_plt;
11387 s = ppc64_elf_tdata (ibfd)->got;
11388 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11390 struct got_entry *ent;
11392 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11394 unsigned int ent_size = 8;
11395 unsigned int rel_size = sizeof (Elf64_External_Rela);
11397 ent->got.offset = s->size;
11398 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11403 s->size += ent_size;
11404 if ((*lgot_masks & PLT_IFUNC) != 0)
11406 htab->elf.irelplt->size += rel_size;
11407 htab->got_reli_size += rel_size;
11409 else if (info->shared)
11411 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11412 srel->size += rel_size;
11418 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11420 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11422 struct got_entry *ent;
11424 if (!is_ppc64_elf (ibfd))
11427 ent = ppc64_tlsld_got (ibfd);
11428 if (!ent->is_indirect
11429 && ent->got.offset != (bfd_vma) -1)
11431 asection *s = ppc64_elf_tdata (ibfd)->got;
11432 ent->got.offset = s->size;
11436 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11437 srel->size += sizeof (Elf64_External_Rela);
11442 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11443 if (!done_something)
11444 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11448 if (!is_ppc64_elf (ibfd))
11451 got = ppc64_elf_tdata (ibfd)->got;
11454 done_something = got->rawsize != got->size;
11455 if (done_something)
11460 if (done_something)
11461 (*htab->params->layout_sections_again) ();
11463 /* Set up for second pass over toc sections to recalculate elf_gp
11464 on input sections. */
11465 htab->toc_bfd = NULL;
11466 htab->toc_first_sec = NULL;
11467 htab->second_toc_pass = TRUE;
11468 return done_something;
11471 /* Called after second pass of multitoc partitioning. */
11474 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11476 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11478 /* After the second pass, toc_curr tracks the TOC offset used
11479 for code sections below in ppc64_elf_next_input_section. */
11480 htab->toc_curr = TOC_BASE_OFF;
11483 /* No toc references were found in ISEC. If the code in ISEC makes no
11484 calls, then there's no need to use toc adjusting stubs when branching
11485 into ISEC. Actually, indirect calls from ISEC are OK as they will
11486 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11487 needed, and 2 if a cyclical call-graph was found but no other reason
11488 for a stub was detected. If called from the top level, a return of
11489 2 means the same as a return of 0. */
11492 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11496 /* Mark this section as checked. */
11497 isec->call_check_done = 1;
11499 /* We know none of our code bearing sections will need toc stubs. */
11500 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11503 if (isec->size == 0)
11506 if (isec->output_section == NULL)
11510 if (isec->reloc_count != 0)
11512 Elf_Internal_Rela *relstart, *rel;
11513 Elf_Internal_Sym *local_syms;
11514 struct ppc_link_hash_table *htab;
11516 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11517 info->keep_memory);
11518 if (relstart == NULL)
11521 /* Look for branches to outside of this section. */
11523 htab = ppc_hash_table (info);
11527 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11529 enum elf_ppc64_reloc_type r_type;
11530 unsigned long r_symndx;
11531 struct elf_link_hash_entry *h;
11532 struct ppc_link_hash_entry *eh;
11533 Elf_Internal_Sym *sym;
11535 struct _opd_sec_data *opd;
11539 r_type = ELF64_R_TYPE (rel->r_info);
11540 if (r_type != R_PPC64_REL24
11541 && r_type != R_PPC64_REL14
11542 && r_type != R_PPC64_REL14_BRTAKEN
11543 && r_type != R_PPC64_REL14_BRNTAKEN)
11546 r_symndx = ELF64_R_SYM (rel->r_info);
11547 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11554 /* Calls to dynamic lib functions go through a plt call stub
11556 eh = (struct ppc_link_hash_entry *) h;
11558 && (eh->elf.plt.plist != NULL
11560 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11566 if (sym_sec == NULL)
11567 /* Ignore other undefined symbols. */
11570 /* Assume branches to other sections not included in the
11571 link need stubs too, to cover -R and absolute syms. */
11572 if (sym_sec->output_section == NULL)
11579 sym_value = sym->st_value;
11582 if (h->root.type != bfd_link_hash_defined
11583 && h->root.type != bfd_link_hash_defweak)
11585 sym_value = h->root.u.def.value;
11587 sym_value += rel->r_addend;
11589 /* If this branch reloc uses an opd sym, find the code section. */
11590 opd = get_opd_info (sym_sec);
11593 if (h == NULL && opd->adjust != NULL)
11597 adjust = opd->adjust[OPD_NDX (sym->st_value)];
11599 /* Assume deleted functions won't ever be called. */
11601 sym_value += adjust;
11604 dest = opd_entry_value (sym_sec, sym_value,
11605 &sym_sec, NULL, FALSE);
11606 if (dest == (bfd_vma) -1)
11611 + sym_sec->output_offset
11612 + sym_sec->output_section->vma);
11614 /* Ignore branch to self. */
11615 if (sym_sec == isec)
11618 /* If the called function uses the toc, we need a stub. */
11619 if (sym_sec->has_toc_reloc
11620 || sym_sec->makes_toc_func_call)
11626 /* Assume any branch that needs a long branch stub might in fact
11627 need a plt_branch stub. A plt_branch stub uses r2. */
11628 else if (dest - (isec->output_offset
11629 + isec->output_section->vma
11630 + rel->r_offset) + (1 << 25)
11631 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11639 /* If calling back to a section in the process of being
11640 tested, we can't say for sure that no toc adjusting stubs
11641 are needed, so don't return zero. */
11642 else if (sym_sec->call_check_in_progress)
11645 /* Branches to another section that itself doesn't have any TOC
11646 references are OK. Recursively call ourselves to check. */
11647 else if (!sym_sec->call_check_done)
11651 /* Mark current section as indeterminate, so that other
11652 sections that call back to current won't be marked as
11654 isec->call_check_in_progress = 1;
11655 recur = toc_adjusting_stub_needed (info, sym_sec);
11656 isec->call_check_in_progress = 0;
11667 if (local_syms != NULL
11668 && (elf_symtab_hdr (isec->owner).contents
11669 != (unsigned char *) local_syms))
11671 if (elf_section_data (isec)->relocs != relstart)
11676 && isec->map_head.s != NULL
11677 && (strcmp (isec->output_section->name, ".init") == 0
11678 || strcmp (isec->output_section->name, ".fini") == 0))
11680 if (isec->map_head.s->has_toc_reloc
11681 || isec->map_head.s->makes_toc_func_call)
11683 else if (!isec->map_head.s->call_check_done)
11686 isec->call_check_in_progress = 1;
11687 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11688 isec->call_check_in_progress = 0;
11695 isec->makes_toc_func_call = 1;
11700 /* The linker repeatedly calls this function for each input section,
11701 in the order that input sections are linked into output sections.
11702 Build lists of input sections to determine groupings between which
11703 we may insert linker stubs. */
11706 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11708 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11713 if ((isec->output_section->flags & SEC_CODE) != 0
11714 && isec->output_section->index <= htab->top_index)
11716 asection **list = htab->input_list + isec->output_section->index;
11717 /* Steal the link_sec pointer for our list. */
11718 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11719 /* This happens to make the list in reverse order,
11720 which is what we want. */
11721 PREV_SEC (isec) = *list;
11725 if (htab->multi_toc_needed)
11727 /* Analyse sections that aren't already flagged as needing a
11728 valid toc pointer. Exclude .fixup for the linux kernel.
11729 .fixup contains branches, but only back to the function that
11730 hit an exception. */
11731 if (!(isec->has_toc_reloc
11732 || (isec->flags & SEC_CODE) == 0
11733 || strcmp (isec->name, ".fixup") == 0
11734 || isec->call_check_done))
11736 if (toc_adjusting_stub_needed (info, isec) < 0)
11739 /* Make all sections use the TOC assigned for this object file.
11740 This will be wrong for pasted sections; We fix that in
11741 check_pasted_section(). */
11742 if (elf_gp (isec->owner) != 0)
11743 htab->toc_curr = elf_gp (isec->owner);
11746 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11750 /* Check that all .init and .fini sections use the same toc, if they
11751 have toc relocs. */
11754 check_pasted_section (struct bfd_link_info *info, const char *name)
11756 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11760 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11761 bfd_vma toc_off = 0;
11764 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11765 if (i->has_toc_reloc)
11768 toc_off = htab->stub_group[i->id].toc_off;
11769 else if (toc_off != htab->stub_group[i->id].toc_off)
11774 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11775 if (i->makes_toc_func_call)
11777 toc_off = htab->stub_group[i->id].toc_off;
11781 /* Make sure the whole pasted function uses the same toc offset. */
11783 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11784 htab->stub_group[i->id].toc_off = toc_off;
11790 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11792 return (check_pasted_section (info, ".init")
11793 & check_pasted_section (info, ".fini"));
11796 /* See whether we can group stub sections together. Grouping stub
11797 sections may result in fewer stubs. More importantly, we need to
11798 put all .init* and .fini* stubs at the beginning of the .init or
11799 .fini output sections respectively, because glibc splits the
11800 _init and _fini functions into multiple parts. Putting a stub in
11801 the middle of a function is not a good idea. */
11804 group_sections (struct ppc_link_hash_table *htab,
11805 bfd_size_type stub_group_size,
11806 bfd_boolean stubs_always_before_branch)
11809 bfd_size_type stub14_group_size;
11810 bfd_boolean suppress_size_errors;
11812 suppress_size_errors = FALSE;
11813 stub14_group_size = stub_group_size >> 10;
11814 if (stub_group_size == 1)
11816 /* Default values. */
11817 if (stubs_always_before_branch)
11819 stub_group_size = 0x1e00000;
11820 stub14_group_size = 0x7800;
11824 stub_group_size = 0x1c00000;
11825 stub14_group_size = 0x7000;
11827 suppress_size_errors = TRUE;
11830 list = htab->input_list + htab->top_index;
11833 asection *tail = *list;
11834 while (tail != NULL)
11838 bfd_size_type total;
11839 bfd_boolean big_sec;
11843 total = tail->size;
11844 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11845 && ppc64_elf_section_data (tail)->has_14bit_branch
11846 ? stub14_group_size : stub_group_size);
11847 if (big_sec && !suppress_size_errors)
11848 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11849 tail->owner, tail);
11850 curr_toc = htab->stub_group[tail->id].toc_off;
11852 while ((prev = PREV_SEC (curr)) != NULL
11853 && ((total += curr->output_offset - prev->output_offset)
11854 < (ppc64_elf_section_data (prev) != NULL
11855 && ppc64_elf_section_data (prev)->has_14bit_branch
11856 ? stub14_group_size : stub_group_size))
11857 && htab->stub_group[prev->id].toc_off == curr_toc)
11860 /* OK, the size from the start of CURR to the end is less
11861 than stub_group_size and thus can be handled by one stub
11862 section. (or the tail section is itself larger than
11863 stub_group_size, in which case we may be toast.) We
11864 should really be keeping track of the total size of stubs
11865 added here, as stubs contribute to the final output
11866 section size. That's a little tricky, and this way will
11867 only break if stubs added make the total size more than
11868 2^25, ie. for the default stub_group_size, if stubs total
11869 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11872 prev = PREV_SEC (tail);
11873 /* Set up this stub group. */
11874 htab->stub_group[tail->id].link_sec = curr;
11876 while (tail != curr && (tail = prev) != NULL);
11878 /* But wait, there's more! Input sections up to stub_group_size
11879 bytes before the stub section can be handled by it too.
11880 Don't do this if we have a really large section after the
11881 stubs, as adding more stubs increases the chance that
11882 branches may not reach into the stub section. */
11883 if (!stubs_always_before_branch && !big_sec)
11886 while (prev != NULL
11887 && ((total += tail->output_offset - prev->output_offset)
11888 < (ppc64_elf_section_data (prev) != NULL
11889 && ppc64_elf_section_data (prev)->has_14bit_branch
11890 ? stub14_group_size : stub_group_size))
11891 && htab->stub_group[prev->id].toc_off == curr_toc)
11894 prev = PREV_SEC (tail);
11895 htab->stub_group[tail->id].link_sec = curr;
11901 while (list-- != htab->input_list);
11902 free (htab->input_list);
11906 static const unsigned char glink_eh_frame_cie[] =
11908 0, 0, 0, 16, /* length. */
11909 0, 0, 0, 0, /* id. */
11910 1, /* CIE version. */
11911 'z', 'R', 0, /* Augmentation string. */
11912 4, /* Code alignment. */
11913 0x78, /* Data alignment. */
11915 1, /* Augmentation size. */
11916 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11917 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11921 /* Stripping output sections is normally done before dynamic section
11922 symbols have been allocated. This function is called later, and
11923 handles cases like htab->brlt which is mapped to its own output
11927 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11929 if (isec->size == 0
11930 && isec->output_section->size == 0
11931 && !(isec->output_section->flags & SEC_KEEP)
11932 && !bfd_section_removed_from_list (info->output_bfd,
11933 isec->output_section)
11934 && elf_section_data (isec->output_section)->dynindx == 0)
11936 isec->output_section->flags |= SEC_EXCLUDE;
11937 bfd_section_list_remove (info->output_bfd, isec->output_section);
11938 info->output_bfd->section_count--;
11942 /* Determine and set the size of the stub section for a final link.
11944 The basic idea here is to examine all the relocations looking for
11945 PC-relative calls to a target that is unreachable with a "bl"
11949 ppc64_elf_size_stubs (struct bfd_link_info *info)
11951 bfd_size_type stub_group_size;
11952 bfd_boolean stubs_always_before_branch;
11953 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11958 if (htab->params->plt_thread_safe == -1 && !info->executable)
11959 htab->params->plt_thread_safe = 1;
11960 if (!htab->opd_abi)
11961 htab->params->plt_thread_safe = 0;
11962 else if (htab->params->plt_thread_safe == -1)
11964 static const char *const thread_starter[] =
11968 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11970 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11971 "mq_notify", "create_timer",
11976 "GOMP_parallel_start",
11977 "GOMP_parallel_loop_static",
11978 "GOMP_parallel_loop_static_start",
11979 "GOMP_parallel_loop_dynamic",
11980 "GOMP_parallel_loop_dynamic_start",
11981 "GOMP_parallel_loop_guided",
11982 "GOMP_parallel_loop_guided_start",
11983 "GOMP_parallel_loop_runtime",
11984 "GOMP_parallel_loop_runtime_start",
11985 "GOMP_parallel_sections",
11986 "GOMP_parallel_sections_start",
11992 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11994 struct elf_link_hash_entry *h;
11995 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11996 FALSE, FALSE, TRUE);
11997 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11998 if (htab->params->plt_thread_safe)
12002 stubs_always_before_branch = htab->params->group_size < 0;
12003 if (htab->params->group_size < 0)
12004 stub_group_size = -htab->params->group_size;
12006 stub_group_size = htab->params->group_size;
12008 group_sections (htab, stub_group_size, stubs_always_before_branch);
12013 unsigned int bfd_indx;
12014 asection *stub_sec;
12016 htab->stub_iteration += 1;
12018 for (input_bfd = info->input_bfds, bfd_indx = 0;
12020 input_bfd = input_bfd->link.next, bfd_indx++)
12022 Elf_Internal_Shdr *symtab_hdr;
12024 Elf_Internal_Sym *local_syms = NULL;
12026 if (!is_ppc64_elf (input_bfd))
12029 /* We'll need the symbol table in a second. */
12030 symtab_hdr = &elf_symtab_hdr (input_bfd);
12031 if (symtab_hdr->sh_info == 0)
12034 /* Walk over each section attached to the input bfd. */
12035 for (section = input_bfd->sections;
12037 section = section->next)
12039 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12041 /* If there aren't any relocs, then there's nothing more
12043 if ((section->flags & SEC_RELOC) == 0
12044 || (section->flags & SEC_ALLOC) == 0
12045 || (section->flags & SEC_LOAD) == 0
12046 || (section->flags & SEC_CODE) == 0
12047 || section->reloc_count == 0)
12050 /* If this section is a link-once section that will be
12051 discarded, then don't create any stubs. */
12052 if (section->output_section == NULL
12053 || section->output_section->owner != info->output_bfd)
12056 /* Get the relocs. */
12058 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12059 info->keep_memory);
12060 if (internal_relocs == NULL)
12061 goto error_ret_free_local;
12063 /* Now examine each relocation. */
12064 irela = internal_relocs;
12065 irelaend = irela + section->reloc_count;
12066 for (; irela < irelaend; irela++)
12068 enum elf_ppc64_reloc_type r_type;
12069 unsigned int r_indx;
12070 enum ppc_stub_type stub_type;
12071 struct ppc_stub_hash_entry *stub_entry;
12072 asection *sym_sec, *code_sec;
12073 bfd_vma sym_value, code_value;
12074 bfd_vma destination;
12075 unsigned long local_off;
12076 bfd_boolean ok_dest;
12077 struct ppc_link_hash_entry *hash;
12078 struct ppc_link_hash_entry *fdh;
12079 struct elf_link_hash_entry *h;
12080 Elf_Internal_Sym *sym;
12082 const asection *id_sec;
12083 struct _opd_sec_data *opd;
12084 struct plt_entry *plt_ent;
12086 r_type = ELF64_R_TYPE (irela->r_info);
12087 r_indx = ELF64_R_SYM (irela->r_info);
12089 if (r_type >= R_PPC64_max)
12091 bfd_set_error (bfd_error_bad_value);
12092 goto error_ret_free_internal;
12095 /* Only look for stubs on branch instructions. */
12096 if (r_type != R_PPC64_REL24
12097 && r_type != R_PPC64_REL14
12098 && r_type != R_PPC64_REL14_BRTAKEN
12099 && r_type != R_PPC64_REL14_BRNTAKEN)
12102 /* Now determine the call target, its name, value,
12104 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12105 r_indx, input_bfd))
12106 goto error_ret_free_internal;
12107 hash = (struct ppc_link_hash_entry *) h;
12114 sym_value = sym->st_value;
12117 else if (hash->elf.root.type == bfd_link_hash_defined
12118 || hash->elf.root.type == bfd_link_hash_defweak)
12120 sym_value = hash->elf.root.u.def.value;
12121 if (sym_sec->output_section != NULL)
12124 else if (hash->elf.root.type == bfd_link_hash_undefweak
12125 || hash->elf.root.type == bfd_link_hash_undefined)
12127 /* Recognise an old ABI func code entry sym, and
12128 use the func descriptor sym instead if it is
12130 if (hash->elf.root.root.string[0] == '.'
12131 && (fdh = lookup_fdh (hash, htab)) != NULL)
12133 if (fdh->elf.root.type == bfd_link_hash_defined
12134 || fdh->elf.root.type == bfd_link_hash_defweak)
12136 sym_sec = fdh->elf.root.u.def.section;
12137 sym_value = fdh->elf.root.u.def.value;
12138 if (sym_sec->output_section != NULL)
12147 bfd_set_error (bfd_error_bad_value);
12148 goto error_ret_free_internal;
12155 sym_value += irela->r_addend;
12156 destination = (sym_value
12157 + sym_sec->output_offset
12158 + sym_sec->output_section->vma);
12159 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12164 code_sec = sym_sec;
12165 code_value = sym_value;
12166 opd = get_opd_info (sym_sec);
12171 if (hash == NULL && opd->adjust != NULL)
12173 long adjust = opd->adjust[OPD_NDX (sym_value)];
12176 code_value += adjust;
12177 sym_value += adjust;
12179 dest = opd_entry_value (sym_sec, sym_value,
12180 &code_sec, &code_value, FALSE);
12181 if (dest != (bfd_vma) -1)
12183 destination = dest;
12186 /* Fixup old ABI sym to point at code
12188 hash->elf.root.type = bfd_link_hash_defweak;
12189 hash->elf.root.u.def.section = code_sec;
12190 hash->elf.root.u.def.value = code_value;
12195 /* Determine what (if any) linker stub is needed. */
12197 stub_type = ppc_type_of_stub (section, irela, &hash,
12198 &plt_ent, destination,
12201 if (stub_type != ppc_stub_plt_call)
12203 /* Check whether we need a TOC adjusting stub.
12204 Since the linker pastes together pieces from
12205 different object files when creating the
12206 _init and _fini functions, it may be that a
12207 call to what looks like a local sym is in
12208 fact a call needing a TOC adjustment. */
12209 if (code_sec != NULL
12210 && code_sec->output_section != NULL
12211 && (htab->stub_group[code_sec->id].toc_off
12212 != htab->stub_group[section->id].toc_off)
12213 && (code_sec->has_toc_reloc
12214 || code_sec->makes_toc_func_call))
12215 stub_type = ppc_stub_long_branch_r2off;
12218 if (stub_type == ppc_stub_none)
12221 /* __tls_get_addr calls might be eliminated. */
12222 if (stub_type != ppc_stub_plt_call
12224 && (hash == htab->tls_get_addr
12225 || hash == htab->tls_get_addr_fd)
12226 && section->has_tls_reloc
12227 && irela != internal_relocs)
12229 /* Get tls info. */
12230 unsigned char *tls_mask;
12232 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12233 irela - 1, input_bfd))
12234 goto error_ret_free_internal;
12235 if (*tls_mask != 0)
12239 if (stub_type == ppc_stub_plt_call
12240 && irela + 1 < irelaend
12241 && irela[1].r_offset == irela->r_offset + 4
12242 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12244 if (!tocsave_find (htab, INSERT,
12245 &local_syms, irela + 1, input_bfd))
12246 goto error_ret_free_internal;
12248 else if (stub_type == ppc_stub_plt_call)
12249 stub_type = ppc_stub_plt_call_r2save;
12251 /* Support for grouping stub sections. */
12252 id_sec = htab->stub_group[section->id].link_sec;
12254 /* Get the name of this stub. */
12255 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12257 goto error_ret_free_internal;
12259 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12260 stub_name, FALSE, FALSE);
12261 if (stub_entry != NULL)
12263 /* The proper stub has already been created. */
12265 if (stub_type == ppc_stub_plt_call_r2save)
12266 stub_entry->stub_type = stub_type;
12270 stub_entry = ppc_add_stub (stub_name, section, info);
12271 if (stub_entry == NULL)
12274 error_ret_free_internal:
12275 if (elf_section_data (section)->relocs == NULL)
12276 free (internal_relocs);
12277 error_ret_free_local:
12278 if (local_syms != NULL
12279 && (symtab_hdr->contents
12280 != (unsigned char *) local_syms))
12285 stub_entry->stub_type = stub_type;
12286 if (stub_type != ppc_stub_plt_call
12287 && stub_type != ppc_stub_plt_call_r2save)
12289 stub_entry->target_value = code_value;
12290 stub_entry->target_section = code_sec;
12294 stub_entry->target_value = sym_value;
12295 stub_entry->target_section = sym_sec;
12297 stub_entry->h = hash;
12298 stub_entry->plt_ent = plt_ent;
12299 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12301 if (stub_entry->h != NULL)
12302 htab->stub_globals += 1;
12305 /* We're done with the internal relocs, free them. */
12306 if (elf_section_data (section)->relocs != internal_relocs)
12307 free (internal_relocs);
12310 if (local_syms != NULL
12311 && symtab_hdr->contents != (unsigned char *) local_syms)
12313 if (!info->keep_memory)
12316 symtab_hdr->contents = (unsigned char *) local_syms;
12320 /* We may have added some stubs. Find out the new size of the
12322 for (stub_sec = htab->params->stub_bfd->sections;
12324 stub_sec = stub_sec->next)
12325 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12327 stub_sec->rawsize = stub_sec->size;
12328 stub_sec->size = 0;
12329 stub_sec->reloc_count = 0;
12330 stub_sec->flags &= ~SEC_RELOC;
12333 htab->brlt->size = 0;
12334 htab->brlt->reloc_count = 0;
12335 htab->brlt->flags &= ~SEC_RELOC;
12336 if (htab->relbrlt != NULL)
12337 htab->relbrlt->size = 0;
12339 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12341 if (info->emitrelocations
12342 && htab->glink != NULL && htab->glink->size != 0)
12344 htab->glink->reloc_count = 1;
12345 htab->glink->flags |= SEC_RELOC;
12348 if (htab->glink_eh_frame != NULL
12349 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12350 && htab->glink_eh_frame->output_section->size != 0)
12352 size_t size = 0, align;
12354 for (stub_sec = htab->params->stub_bfd->sections;
12356 stub_sec = stub_sec->next)
12357 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12359 if (htab->glink != NULL && htab->glink->size != 0)
12362 size += sizeof (glink_eh_frame_cie);
12364 align <<= htab->glink_eh_frame->output_section->alignment_power;
12366 size = (size + align) & ~align;
12367 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12368 htab->glink_eh_frame->size = size;
12371 if (htab->params->plt_stub_align != 0)
12372 for (stub_sec = htab->params->stub_bfd->sections;
12374 stub_sec = stub_sec->next)
12375 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12376 stub_sec->size = ((stub_sec->size
12377 + (1 << htab->params->plt_stub_align) - 1)
12378 & (-1 << htab->params->plt_stub_align));
12380 for (stub_sec = htab->params->stub_bfd->sections;
12382 stub_sec = stub_sec->next)
12383 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12384 && stub_sec->rawsize != stub_sec->size)
12387 /* Exit from this loop when no stubs have been added, and no stubs
12388 have changed size. */
12389 if (stub_sec == NULL
12390 && (htab->glink_eh_frame == NULL
12391 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12394 /* Ask the linker to do its stuff. */
12395 (*htab->params->layout_sections_again) ();
12398 if (htab->glink_eh_frame != NULL
12399 && htab->glink_eh_frame->size != 0)
12402 bfd_byte *p, *last_fde;
12403 size_t last_fde_len, size, align, pad;
12404 asection *stub_sec;
12406 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12409 htab->glink_eh_frame->contents = p;
12412 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12413 /* CIE length (rewrite in case little-endian). */
12414 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12415 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12416 p += sizeof (glink_eh_frame_cie);
12418 for (stub_sec = htab->params->stub_bfd->sections;
12420 stub_sec = stub_sec->next)
12421 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12426 bfd_put_32 (htab->elf.dynobj, 20, p);
12429 val = p - htab->glink_eh_frame->contents;
12430 bfd_put_32 (htab->elf.dynobj, val, p);
12432 /* Offset to stub section, written later. */
12434 /* stub section size. */
12435 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12437 /* Augmentation. */
12442 if (htab->glink != NULL && htab->glink->size != 0)
12447 bfd_put_32 (htab->elf.dynobj, 20, p);
12450 val = p - htab->glink_eh_frame->contents;
12451 bfd_put_32 (htab->elf.dynobj, val, p);
12453 /* Offset to .glink, written later. */
12456 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12458 /* Augmentation. */
12461 *p++ = DW_CFA_advance_loc + 1;
12462 *p++ = DW_CFA_register;
12465 *p++ = DW_CFA_advance_loc + 4;
12466 *p++ = DW_CFA_restore_extended;
12469 /* Subsume any padding into the last FDE if user .eh_frame
12470 sections are aligned more than glink_eh_frame. Otherwise any
12471 zero padding will be seen as a terminator. */
12472 size = p - htab->glink_eh_frame->contents;
12474 align <<= htab->glink_eh_frame->output_section->alignment_power;
12476 pad = ((size + align) & ~align) - size;
12477 htab->glink_eh_frame->size = size + pad;
12478 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12481 maybe_strip_output (info, htab->brlt);
12482 if (htab->glink_eh_frame != NULL)
12483 maybe_strip_output (info, htab->glink_eh_frame);
12488 /* Called after we have determined section placement. If sections
12489 move, we'll be called again. Provide a value for TOCstart. */
12492 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12497 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12498 order. The TOC starts where the first of these sections starts. */
12499 s = bfd_get_section_by_name (obfd, ".got");
12500 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12501 s = bfd_get_section_by_name (obfd, ".toc");
12502 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12503 s = bfd_get_section_by_name (obfd, ".tocbss");
12504 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12505 s = bfd_get_section_by_name (obfd, ".plt");
12506 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12508 /* This may happen for
12509 o references to TOC base (SYM@toc / TOC[tc0]) without a
12511 o bad linker script
12512 o --gc-sections and empty TOC sections
12514 FIXME: Warn user? */
12516 /* Look for a likely section. We probably won't even be
12518 for (s = obfd->sections; s != NULL; s = s->next)
12519 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12521 == (SEC_ALLOC | SEC_SMALL_DATA))
12524 for (s = obfd->sections; s != NULL; s = s->next)
12525 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12526 == (SEC_ALLOC | SEC_SMALL_DATA))
12529 for (s = obfd->sections; s != NULL; s = s->next)
12530 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12534 for (s = obfd->sections; s != NULL; s = s->next)
12535 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12541 TOCstart = s->output_section->vma + s->output_offset;
12543 _bfd_set_gp_value (obfd, TOCstart);
12545 if (info != NULL && s != NULL)
12547 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12551 if (htab->elf.hgot != NULL)
12553 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12554 htab->elf.hgot->root.u.def.section = s;
12559 struct bfd_link_hash_entry *bh = NULL;
12560 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12561 s, TOC_BASE_OFF, NULL, FALSE,
12568 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12569 write out any global entry stubs. */
12572 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12574 struct bfd_link_info *info;
12575 struct ppc_link_hash_table *htab;
12576 struct plt_entry *pent;
12579 if (h->root.type == bfd_link_hash_indirect)
12582 if (!h->pointer_equality_needed)
12585 if (h->def_regular)
12589 htab = ppc_hash_table (info);
12594 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12595 if (pent->plt.offset != (bfd_vma) -1
12596 && pent->addend == 0)
12602 p = s->contents + h->root.u.def.value;
12603 plt = htab->elf.splt;
12604 if (!htab->elf.dynamic_sections_created
12605 || h->dynindx == -1)
12606 plt = htab->elf.iplt;
12607 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12608 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12610 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12612 info->callbacks->einfo
12613 (_("%P: linkage table error against `%T'\n"),
12614 h->root.root.string);
12615 bfd_set_error (bfd_error_bad_value);
12616 htab->stub_error = TRUE;
12619 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12620 if (htab->params->emit_stub_syms)
12622 size_t len = strlen (h->root.root.string);
12623 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12628 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12629 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12632 if (h->root.type == bfd_link_hash_new)
12634 h->root.type = bfd_link_hash_defined;
12635 h->root.u.def.section = s;
12636 h->root.u.def.value = p - s->contents;
12637 h->ref_regular = 1;
12638 h->def_regular = 1;
12639 h->ref_regular_nonweak = 1;
12640 h->forced_local = 1;
12645 if (PPC_HA (off) != 0)
12647 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12650 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12652 bfd_put_32 (s->owner, MTCTR_R12, p);
12654 bfd_put_32 (s->owner, BCTR, p);
12660 /* Build all the stubs associated with the current output file.
12661 The stubs are kept in a hash table attached to the main linker
12662 hash table. This function is called via gldelf64ppc_finish. */
12665 ppc64_elf_build_stubs (struct bfd_link_info *info,
12668 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12669 asection *stub_sec;
12671 int stub_sec_count = 0;
12676 /* Allocate memory to hold the linker stubs. */
12677 for (stub_sec = htab->params->stub_bfd->sections;
12679 stub_sec = stub_sec->next)
12680 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12681 && stub_sec->size != 0)
12683 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12684 if (stub_sec->contents == NULL)
12686 /* We want to check that built size is the same as calculated
12687 size. rawsize is a convenient location to use. */
12688 stub_sec->rawsize = stub_sec->size;
12689 stub_sec->size = 0;
12692 if (htab->glink != NULL && htab->glink->size != 0)
12697 /* Build the .glink plt call stub. */
12698 if (htab->params->emit_stub_syms)
12700 struct elf_link_hash_entry *h;
12701 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12702 TRUE, FALSE, FALSE);
12705 if (h->root.type == bfd_link_hash_new)
12707 h->root.type = bfd_link_hash_defined;
12708 h->root.u.def.section = htab->glink;
12709 h->root.u.def.value = 8;
12710 h->ref_regular = 1;
12711 h->def_regular = 1;
12712 h->ref_regular_nonweak = 1;
12713 h->forced_local = 1;
12717 plt0 = (htab->elf.splt->output_section->vma
12718 + htab->elf.splt->output_offset
12720 if (info->emitrelocations)
12722 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12725 r->r_offset = (htab->glink->output_offset
12726 + htab->glink->output_section->vma);
12727 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12728 r->r_addend = plt0;
12730 p = htab->glink->contents;
12731 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12732 bfd_put_64 (htab->glink->owner, plt0, p);
12736 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12738 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12740 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12742 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12744 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12746 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12748 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12750 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12752 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12754 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12759 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12761 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12763 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12765 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12767 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12769 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12771 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12773 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12775 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12777 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12779 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12781 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12784 bfd_put_32 (htab->glink->owner, BCTR, p);
12786 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12788 bfd_put_32 (htab->glink->owner, NOP, p);
12792 /* Build the .glink lazy link call stubs. */
12794 while (p < htab->glink->contents + htab->glink->rawsize)
12800 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12805 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12807 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12812 bfd_put_32 (htab->glink->owner,
12813 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12818 /* Build .glink global entry stubs. */
12819 if (htab->glink->size > htab->glink->rawsize)
12820 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12823 if (htab->brlt != NULL && htab->brlt->size != 0)
12825 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12827 if (htab->brlt->contents == NULL)
12830 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12832 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12833 htab->relbrlt->size);
12834 if (htab->relbrlt->contents == NULL)
12838 /* Build the stubs as directed by the stub hash table. */
12839 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12841 if (htab->relbrlt != NULL)
12842 htab->relbrlt->reloc_count = 0;
12844 if (htab->params->plt_stub_align != 0)
12845 for (stub_sec = htab->params->stub_bfd->sections;
12847 stub_sec = stub_sec->next)
12848 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12849 stub_sec->size = ((stub_sec->size
12850 + (1 << htab->params->plt_stub_align) - 1)
12851 & (-1 << htab->params->plt_stub_align));
12853 for (stub_sec = htab->params->stub_bfd->sections;
12855 stub_sec = stub_sec->next)
12856 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12858 stub_sec_count += 1;
12859 if (stub_sec->rawsize != stub_sec->size)
12863 /* Note that the glink_eh_frame check here is not only testing that
12864 the generated size matched the calculated size but also that
12865 bfd_elf_discard_info didn't make any changes to the section. */
12866 if (stub_sec != NULL
12867 || (htab->glink_eh_frame != NULL
12868 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12870 htab->stub_error = TRUE;
12871 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12874 if (htab->stub_error)
12879 *stats = bfd_malloc (500);
12880 if (*stats == NULL)
12883 sprintf (*stats, _("linker stubs in %u group%s\n"
12885 " toc adjust %lu\n"
12886 " long branch %lu\n"
12887 " long toc adj %lu\n"
12889 " plt call toc %lu\n"
12890 " global entry %lu"),
12892 stub_sec_count == 1 ? "" : "s",
12893 htab->stub_count[ppc_stub_long_branch - 1],
12894 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12895 htab->stub_count[ppc_stub_plt_branch - 1],
12896 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12897 htab->stub_count[ppc_stub_plt_call - 1],
12898 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12899 htab->stub_count[ppc_stub_global_entry - 1]);
12904 /* This function undoes the changes made by add_symbol_adjust. */
12907 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12909 struct ppc_link_hash_entry *eh;
12911 if (h->root.type == bfd_link_hash_indirect)
12914 eh = (struct ppc_link_hash_entry *) h;
12915 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12918 eh->elf.root.type = bfd_link_hash_undefined;
12923 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12925 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12928 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12931 /* What to do when ld finds relocations against symbols defined in
12932 discarded sections. */
12934 static unsigned int
12935 ppc64_elf_action_discarded (asection *sec)
12937 if (strcmp (".opd", sec->name) == 0)
12940 if (strcmp (".toc", sec->name) == 0)
12943 if (strcmp (".toc1", sec->name) == 0)
12946 return _bfd_elf_default_action_discarded (sec);
12949 /* The RELOCATE_SECTION function is called by the ELF backend linker
12950 to handle the relocations for a section.
12952 The relocs are always passed as Rela structures; if the section
12953 actually uses Rel structures, the r_addend field will always be
12956 This function is responsible for adjust the section contents as
12957 necessary, and (if using Rela relocs and generating a
12958 relocatable output file) adjusting the reloc addend as
12961 This function does not have to worry about setting the reloc
12962 address or the reloc symbol index.
12964 LOCAL_SYMS is a pointer to the swapped in local symbols.
12966 LOCAL_SECTIONS is an array giving the section in the input file
12967 corresponding to the st_shndx field of each local symbol.
12969 The global hash table entry for the global symbols can be found
12970 via elf_sym_hashes (input_bfd).
12972 When generating relocatable output, this function must handle
12973 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12974 going to be the section symbol corresponding to the output
12975 section, which means that the addend must be adjusted
12979 ppc64_elf_relocate_section (bfd *output_bfd,
12980 struct bfd_link_info *info,
12982 asection *input_section,
12983 bfd_byte *contents,
12984 Elf_Internal_Rela *relocs,
12985 Elf_Internal_Sym *local_syms,
12986 asection **local_sections)
12988 struct ppc_link_hash_table *htab;
12989 Elf_Internal_Shdr *symtab_hdr;
12990 struct elf_link_hash_entry **sym_hashes;
12991 Elf_Internal_Rela *rel;
12992 Elf_Internal_Rela *relend;
12993 Elf_Internal_Rela outrel;
12995 struct got_entry **local_got_ents;
12997 bfd_boolean ret = TRUE;
12998 bfd_boolean is_opd;
12999 /* Assume 'at' branch hints. */
13000 bfd_boolean is_isa_v2 = TRUE;
13001 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13003 /* Initialize howto table if needed. */
13004 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13007 htab = ppc_hash_table (info);
13011 /* Don't relocate stub sections. */
13012 if (input_section->owner == htab->params->stub_bfd)
13015 BFD_ASSERT (is_ppc64_elf (input_bfd));
13017 local_got_ents = elf_local_got_ents (input_bfd);
13018 TOCstart = elf_gp (output_bfd);
13019 symtab_hdr = &elf_symtab_hdr (input_bfd);
13020 sym_hashes = elf_sym_hashes (input_bfd);
13021 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13024 relend = relocs + input_section->reloc_count;
13025 for (; rel < relend; rel++)
13027 enum elf_ppc64_reloc_type r_type;
13029 bfd_reloc_status_type r;
13030 Elf_Internal_Sym *sym;
13032 struct elf_link_hash_entry *h_elf;
13033 struct ppc_link_hash_entry *h;
13034 struct ppc_link_hash_entry *fdh;
13035 const char *sym_name;
13036 unsigned long r_symndx, toc_symndx;
13037 bfd_vma toc_addend;
13038 unsigned char tls_mask, tls_gd, tls_type;
13039 unsigned char sym_type;
13040 bfd_vma relocation;
13041 bfd_boolean unresolved_reloc;
13042 bfd_boolean warned;
13043 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13046 struct ppc_stub_hash_entry *stub_entry;
13047 bfd_vma max_br_offset;
13049 const Elf_Internal_Rela orig_rel = *rel;
13050 reloc_howto_type *howto;
13051 struct reloc_howto_struct alt_howto;
13053 r_type = ELF64_R_TYPE (rel->r_info);
13054 r_symndx = ELF64_R_SYM (rel->r_info);
13056 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13057 symbol of the previous ADDR64 reloc. The symbol gives us the
13058 proper TOC base to use. */
13059 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13061 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13063 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13069 unresolved_reloc = FALSE;
13072 if (r_symndx < symtab_hdr->sh_info)
13074 /* It's a local symbol. */
13075 struct _opd_sec_data *opd;
13077 sym = local_syms + r_symndx;
13078 sec = local_sections[r_symndx];
13079 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13080 sym_type = ELF64_ST_TYPE (sym->st_info);
13081 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13082 opd = get_opd_info (sec);
13083 if (opd != NULL && opd->adjust != NULL)
13085 long adjust = opd->adjust[OPD_NDX (sym->st_value
13091 /* If this is a relocation against the opd section sym
13092 and we have edited .opd, adjust the reloc addend so
13093 that ld -r and ld --emit-relocs output is correct.
13094 If it is a reloc against some other .opd symbol,
13095 then the symbol value will be adjusted later. */
13096 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13097 rel->r_addend += adjust;
13099 relocation += adjust;
13105 bfd_boolean ignored;
13107 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13108 r_symndx, symtab_hdr, sym_hashes,
13109 h_elf, sec, relocation,
13110 unresolved_reloc, warned, ignored);
13111 sym_name = h_elf->root.root.string;
13112 sym_type = h_elf->type;
13114 && sec->owner == output_bfd
13115 && strcmp (sec->name, ".opd") == 0)
13117 /* This is a symbol defined in a linker script. All
13118 such are defined in output sections, even those
13119 defined by simple assignment from a symbol defined in
13120 an input section. Transfer the symbol to an
13121 appropriate input .opd section, so that a branch to
13122 this symbol will be mapped to the location specified
13123 by the opd entry. */
13124 struct bfd_link_order *lo;
13125 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13126 if (lo->type == bfd_indirect_link_order)
13128 asection *isec = lo->u.indirect.section;
13129 if (h_elf->root.u.def.value >= isec->output_offset
13130 && h_elf->root.u.def.value < (isec->output_offset
13133 h_elf->root.u.def.value -= isec->output_offset;
13134 h_elf->root.u.def.section = isec;
13141 h = (struct ppc_link_hash_entry *) h_elf;
13143 if (sec != NULL && discarded_section (sec))
13144 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13146 ppc64_elf_howto_table[r_type], 0,
13149 if (info->relocatable)
13152 if (h != NULL && &h->elf == htab->elf.hgot)
13154 relocation = (TOCstart
13155 + htab->stub_group[input_section->id].toc_off);
13156 sec = bfd_abs_section_ptr;
13157 unresolved_reloc = FALSE;
13160 /* TLS optimizations. Replace instruction sequences and relocs
13161 based on information we collected in tls_optimize. We edit
13162 RELOCS so that --emit-relocs will output something sensible
13163 for the final instruction stream. */
13168 tls_mask = h->tls_mask;
13169 else if (local_got_ents != NULL)
13171 struct plt_entry **local_plt = (struct plt_entry **)
13172 (local_got_ents + symtab_hdr->sh_info);
13173 unsigned char *lgot_masks = (unsigned char *)
13174 (local_plt + symtab_hdr->sh_info);
13175 tls_mask = lgot_masks[r_symndx];
13178 && (r_type == R_PPC64_TLS
13179 || r_type == R_PPC64_TLSGD
13180 || r_type == R_PPC64_TLSLD))
13182 /* Check for toc tls entries. */
13183 unsigned char *toc_tls;
13185 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13186 &local_syms, rel, input_bfd))
13190 tls_mask = *toc_tls;
13193 /* Check that tls relocs are used with tls syms, and non-tls
13194 relocs are used with non-tls syms. */
13195 if (r_symndx != STN_UNDEF
13196 && r_type != R_PPC64_NONE
13198 || h->elf.root.type == bfd_link_hash_defined
13199 || h->elf.root.type == bfd_link_hash_defweak)
13200 && (IS_PPC64_TLS_RELOC (r_type)
13201 != (sym_type == STT_TLS
13202 || (sym_type == STT_SECTION
13203 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13206 && (r_type == R_PPC64_TLS
13207 || r_type == R_PPC64_TLSGD
13208 || r_type == R_PPC64_TLSLD))
13209 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13212 info->callbacks->einfo
13213 (!IS_PPC64_TLS_RELOC (r_type)
13214 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13215 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13216 input_bfd, input_section, rel->r_offset,
13217 ppc64_elf_howto_table[r_type]->name,
13221 /* Ensure reloc mapping code below stays sane. */
13222 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13223 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13224 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13225 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13226 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13227 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13228 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13229 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13230 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13231 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13239 case R_PPC64_LO_DS_OPT:
13240 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13241 if ((insn & (0x3f << 26)) != 58u << 26)
13243 insn += (14u << 26) - (58u << 26);
13244 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13245 r_type = R_PPC64_TOC16_LO;
13246 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13249 case R_PPC64_TOC16:
13250 case R_PPC64_TOC16_LO:
13251 case R_PPC64_TOC16_DS:
13252 case R_PPC64_TOC16_LO_DS:
13254 /* Check for toc tls entries. */
13255 unsigned char *toc_tls;
13258 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13259 &local_syms, rel, input_bfd);
13265 tls_mask = *toc_tls;
13266 if (r_type == R_PPC64_TOC16_DS
13267 || r_type == R_PPC64_TOC16_LO_DS)
13270 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13275 /* If we found a GD reloc pair, then we might be
13276 doing a GD->IE transition. */
13279 tls_gd = TLS_TPRELGD;
13280 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13283 else if (retval == 3)
13285 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13293 case R_PPC64_GOT_TPREL16_HI:
13294 case R_PPC64_GOT_TPREL16_HA:
13296 && (tls_mask & TLS_TPREL) == 0)
13298 rel->r_offset -= d_offset;
13299 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13300 r_type = R_PPC64_NONE;
13301 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13305 case R_PPC64_GOT_TPREL16_DS:
13306 case R_PPC64_GOT_TPREL16_LO_DS:
13308 && (tls_mask & TLS_TPREL) == 0)
13311 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13313 insn |= 0x3c0d0000; /* addis 0,13,0 */
13314 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13315 r_type = R_PPC64_TPREL16_HA;
13316 if (toc_symndx != 0)
13318 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13319 rel->r_addend = toc_addend;
13320 /* We changed the symbol. Start over in order to
13321 get h, sym, sec etc. right. */
13326 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13332 && (tls_mask & TLS_TPREL) == 0)
13334 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13335 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13338 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13339 /* Was PPC64_TLS which sits on insn boundary, now
13340 PPC64_TPREL16_LO which is at low-order half-word. */
13341 rel->r_offset += d_offset;
13342 r_type = R_PPC64_TPREL16_LO;
13343 if (toc_symndx != 0)
13345 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13346 rel->r_addend = toc_addend;
13347 /* We changed the symbol. Start over in order to
13348 get h, sym, sec etc. right. */
13353 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13357 case R_PPC64_GOT_TLSGD16_HI:
13358 case R_PPC64_GOT_TLSGD16_HA:
13359 tls_gd = TLS_TPRELGD;
13360 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13364 case R_PPC64_GOT_TLSLD16_HI:
13365 case R_PPC64_GOT_TLSLD16_HA:
13366 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13369 if ((tls_mask & tls_gd) != 0)
13370 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13371 + R_PPC64_GOT_TPREL16_DS);
13374 rel->r_offset -= d_offset;
13375 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13376 r_type = R_PPC64_NONE;
13378 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13382 case R_PPC64_GOT_TLSGD16:
13383 case R_PPC64_GOT_TLSGD16_LO:
13384 tls_gd = TLS_TPRELGD;
13385 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13389 case R_PPC64_GOT_TLSLD16:
13390 case R_PPC64_GOT_TLSLD16_LO:
13391 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13393 unsigned int insn1, insn2, insn3;
13397 offset = (bfd_vma) -1;
13398 /* If not using the newer R_PPC64_TLSGD/LD to mark
13399 __tls_get_addr calls, we must trust that the call
13400 stays with its arg setup insns, ie. that the next
13401 reloc is the __tls_get_addr call associated with
13402 the current reloc. Edit both insns. */
13403 if (input_section->has_tls_get_addr_call
13404 && rel + 1 < relend
13405 && branch_reloc_hash_match (input_bfd, rel + 1,
13406 htab->tls_get_addr,
13407 htab->tls_get_addr_fd))
13408 offset = rel[1].r_offset;
13409 if ((tls_mask & tls_gd) != 0)
13412 insn1 = bfd_get_32 (output_bfd,
13413 contents + rel->r_offset - d_offset);
13414 insn1 &= (1 << 26) - (1 << 2);
13415 insn1 |= 58 << 26; /* ld */
13416 insn2 = 0x7c636a14; /* add 3,3,13 */
13417 if (offset != (bfd_vma) -1)
13418 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13419 if ((tls_mask & TLS_EXPLICIT) == 0)
13420 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13421 + R_PPC64_GOT_TPREL16_DS);
13423 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13424 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13429 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13430 insn2 = 0x38630000; /* addi 3,3,0 */
13433 /* Was an LD reloc. */
13435 sec = local_sections[toc_symndx];
13437 r_symndx < symtab_hdr->sh_info;
13439 if (local_sections[r_symndx] == sec)
13441 if (r_symndx >= symtab_hdr->sh_info)
13442 r_symndx = STN_UNDEF;
13443 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13444 if (r_symndx != STN_UNDEF)
13445 rel->r_addend -= (local_syms[r_symndx].st_value
13446 + sec->output_offset
13447 + sec->output_section->vma);
13449 else if (toc_symndx != 0)
13451 r_symndx = toc_symndx;
13452 rel->r_addend = toc_addend;
13454 r_type = R_PPC64_TPREL16_HA;
13455 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13456 if (offset != (bfd_vma) -1)
13458 rel[1].r_info = ELF64_R_INFO (r_symndx,
13459 R_PPC64_TPREL16_LO);
13460 rel[1].r_offset = offset + d_offset;
13461 rel[1].r_addend = rel->r_addend;
13464 bfd_put_32 (output_bfd, insn1,
13465 contents + rel->r_offset - d_offset);
13466 if (offset != (bfd_vma) -1)
13468 insn3 = bfd_get_32 (output_bfd,
13469 contents + offset + 4);
13471 || insn3 == CROR_151515 || insn3 == CROR_313131)
13473 rel[1].r_offset += 4;
13474 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13477 bfd_put_32 (output_bfd, insn2, contents + offset);
13479 if ((tls_mask & tls_gd) == 0
13480 && (tls_gd == 0 || toc_symndx != 0))
13482 /* We changed the symbol. Start over in order
13483 to get h, sym, sec etc. right. */
13490 case R_PPC64_TLSGD:
13491 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13493 unsigned int insn2, insn3;
13494 bfd_vma offset = rel->r_offset;
13496 if ((tls_mask & TLS_TPRELGD) != 0)
13499 r_type = R_PPC64_NONE;
13500 insn2 = 0x7c636a14; /* add 3,3,13 */
13505 if (toc_symndx != 0)
13507 r_symndx = toc_symndx;
13508 rel->r_addend = toc_addend;
13510 r_type = R_PPC64_TPREL16_LO;
13511 rel->r_offset = offset + d_offset;
13512 insn2 = 0x38630000; /* addi 3,3,0 */
13514 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13515 /* Zap the reloc on the _tls_get_addr call too. */
13516 BFD_ASSERT (offset == rel[1].r_offset);
13517 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13518 insn3 = bfd_get_32 (output_bfd,
13519 contents + offset + 4);
13521 || insn3 == CROR_151515 || insn3 == CROR_313131)
13523 rel->r_offset += 4;
13524 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13527 bfd_put_32 (output_bfd, insn2, contents + offset);
13528 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13536 case R_PPC64_TLSLD:
13537 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13539 unsigned int insn2, insn3;
13540 bfd_vma offset = rel->r_offset;
13543 sec = local_sections[toc_symndx];
13545 r_symndx < symtab_hdr->sh_info;
13547 if (local_sections[r_symndx] == sec)
13549 if (r_symndx >= symtab_hdr->sh_info)
13550 r_symndx = STN_UNDEF;
13551 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13552 if (r_symndx != STN_UNDEF)
13553 rel->r_addend -= (local_syms[r_symndx].st_value
13554 + sec->output_offset
13555 + sec->output_section->vma);
13557 r_type = R_PPC64_TPREL16_LO;
13558 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13559 rel->r_offset = offset + d_offset;
13560 /* Zap the reloc on the _tls_get_addr call too. */
13561 BFD_ASSERT (offset == rel[1].r_offset);
13562 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13563 insn2 = 0x38630000; /* addi 3,3,0 */
13564 insn3 = bfd_get_32 (output_bfd,
13565 contents + offset + 4);
13567 || insn3 == CROR_151515 || insn3 == CROR_313131)
13569 rel->r_offset += 4;
13570 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13573 bfd_put_32 (output_bfd, insn2, contents + offset);
13579 case R_PPC64_DTPMOD64:
13580 if (rel + 1 < relend
13581 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13582 && rel[1].r_offset == rel->r_offset + 8)
13584 if ((tls_mask & TLS_GD) == 0)
13586 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13587 if ((tls_mask & TLS_TPRELGD) != 0)
13588 r_type = R_PPC64_TPREL64;
13591 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13592 r_type = R_PPC64_NONE;
13594 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13599 if ((tls_mask & TLS_LD) == 0)
13601 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13602 r_type = R_PPC64_NONE;
13603 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13608 case R_PPC64_TPREL64:
13609 if ((tls_mask & TLS_TPREL) == 0)
13611 r_type = R_PPC64_NONE;
13612 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13616 case R_PPC64_REL16_HA:
13617 /* If we are generating a non-PIC executable, edit
13618 . 0: addis 2,12,.TOC.-0b@ha
13619 . addi 2,2,.TOC.-0b@l
13620 used by ELFv2 global entry points to set up r2, to
13623 if .TOC. is in range. */
13625 && !info->traditional_format
13626 && h != NULL && &h->elf == htab->elf.hgot
13627 && rel + 1 < relend
13628 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13629 && rel[1].r_offset == rel->r_offset + 4
13630 && rel[1].r_addend == rel->r_addend + 4
13631 && relocation + 0x80008000 <= 0xffffffff)
13633 unsigned int insn1, insn2;
13634 bfd_vma offset = rel->r_offset - d_offset;
13635 insn1 = bfd_get_32 (output_bfd, contents + offset);
13636 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13637 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13638 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13640 r_type = R_PPC64_ADDR16_HA;
13641 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13642 rel->r_addend -= d_offset;
13643 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13644 rel[1].r_addend -= d_offset + 4;
13645 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13651 /* Handle other relocations that tweak non-addend part of insn. */
13653 max_br_offset = 1 << 25;
13654 addend = rel->r_addend;
13655 reloc_dest = DEST_NORMAL;
13661 case R_PPC64_TOCSAVE:
13662 if (relocation + addend == (rel->r_offset
13663 + input_section->output_offset
13664 + input_section->output_section->vma)
13665 && tocsave_find (htab, NO_INSERT,
13666 &local_syms, rel, input_bfd))
13668 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13670 || insn == CROR_151515 || insn == CROR_313131)
13671 bfd_put_32 (input_bfd,
13672 STD_R2_0R1 + STK_TOC (htab),
13673 contents + rel->r_offset);
13677 /* Branch taken prediction relocations. */
13678 case R_PPC64_ADDR14_BRTAKEN:
13679 case R_PPC64_REL14_BRTAKEN:
13680 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13683 /* Branch not taken prediction relocations. */
13684 case R_PPC64_ADDR14_BRNTAKEN:
13685 case R_PPC64_REL14_BRNTAKEN:
13686 insn |= bfd_get_32 (output_bfd,
13687 contents + rel->r_offset) & ~(0x01 << 21);
13690 case R_PPC64_REL14:
13691 max_br_offset = 1 << 15;
13694 case R_PPC64_REL24:
13695 /* Calls to functions with a different TOC, such as calls to
13696 shared objects, need to alter the TOC pointer. This is
13697 done using a linkage stub. A REL24 branching to these
13698 linkage stubs needs to be followed by a nop, as the nop
13699 will be replaced with an instruction to restore the TOC
13704 && h->oh->is_func_descriptor)
13705 fdh = ppc_follow_link (h->oh);
13706 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13708 if (stub_entry != NULL
13709 && (stub_entry->stub_type == ppc_stub_plt_call
13710 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13711 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13712 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13714 bfd_boolean can_plt_call = FALSE;
13716 /* All of these stubs will modify r2, so there must be a
13717 branch and link followed by a nop. The nop is
13718 replaced by an insn to restore r2. */
13719 if (rel->r_offset + 8 <= input_section->size)
13723 br = bfd_get_32 (input_bfd,
13724 contents + rel->r_offset);
13729 nop = bfd_get_32 (input_bfd,
13730 contents + rel->r_offset + 4);
13732 || nop == CROR_151515 || nop == CROR_313131)
13735 && (h == htab->tls_get_addr_fd
13736 || h == htab->tls_get_addr)
13737 && !htab->params->no_tls_get_addr_opt)
13739 /* Special stub used, leave nop alone. */
13742 bfd_put_32 (input_bfd,
13743 LD_R2_0R1 + STK_TOC (htab),
13744 contents + rel->r_offset + 4);
13745 can_plt_call = TRUE;
13750 if (!can_plt_call && h != NULL)
13752 const char *name = h->elf.root.root.string;
13757 if (strncmp (name, "__libc_start_main", 17) == 0
13758 && (name[17] == 0 || name[17] == '@'))
13760 /* Allow crt1 branch to go via a toc adjusting
13761 stub. Other calls that never return could do
13762 the same, if we could detect such. */
13763 can_plt_call = TRUE;
13769 /* g++ as of 20130507 emits self-calls without a
13770 following nop. This is arguably wrong since we
13771 have conflicting information. On the one hand a
13772 global symbol and on the other a local call
13773 sequence, but don't error for this special case.
13774 It isn't possible to cheaply verify we have
13775 exactly such a call. Allow all calls to the same
13777 asection *code_sec = sec;
13779 if (get_opd_info (sec) != NULL)
13781 bfd_vma off = (relocation + addend
13782 - sec->output_section->vma
13783 - sec->output_offset);
13785 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13787 if (code_sec == input_section)
13788 can_plt_call = TRUE;
13793 if (stub_entry->stub_type == ppc_stub_plt_call
13794 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13795 info->callbacks->einfo
13796 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13797 "recompile with -fPIC\n"),
13798 input_bfd, input_section, rel->r_offset, sym_name);
13800 info->callbacks->einfo
13801 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13802 "(-mcmodel=small toc adjust stub)\n"),
13803 input_bfd, input_section, rel->r_offset, sym_name);
13805 bfd_set_error (bfd_error_bad_value);
13810 && (stub_entry->stub_type == ppc_stub_plt_call
13811 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13812 unresolved_reloc = FALSE;
13815 if ((stub_entry == NULL
13816 || stub_entry->stub_type == ppc_stub_long_branch
13817 || stub_entry->stub_type == ppc_stub_plt_branch)
13818 && get_opd_info (sec) != NULL)
13820 /* The branch destination is the value of the opd entry. */
13821 bfd_vma off = (relocation + addend
13822 - sec->output_section->vma
13823 - sec->output_offset);
13824 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13825 if (dest != (bfd_vma) -1)
13829 reloc_dest = DEST_OPD;
13833 /* If the branch is out of reach we ought to have a long
13835 from = (rel->r_offset
13836 + input_section->output_offset
13837 + input_section->output_section->vma);
13839 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13843 if (stub_entry != NULL
13844 && (stub_entry->stub_type == ppc_stub_long_branch
13845 || stub_entry->stub_type == ppc_stub_plt_branch)
13846 && (r_type == R_PPC64_ADDR14_BRTAKEN
13847 || r_type == R_PPC64_ADDR14_BRNTAKEN
13848 || (relocation + addend - from + max_br_offset
13849 < 2 * max_br_offset)))
13850 /* Don't use the stub if this branch is in range. */
13853 if (stub_entry != NULL)
13855 /* Munge up the value and addend so that we call the stub
13856 rather than the procedure directly. */
13857 relocation = (stub_entry->stub_offset
13858 + stub_entry->stub_sec->output_offset
13859 + stub_entry->stub_sec->output_section->vma);
13861 reloc_dest = DEST_STUB;
13863 if ((stub_entry->stub_type == ppc_stub_plt_call
13864 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13865 && (ALWAYS_EMIT_R2SAVE
13866 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13867 && rel + 1 < relend
13868 && rel[1].r_offset == rel->r_offset + 4
13869 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13877 /* Set 'a' bit. This is 0b00010 in BO field for branch
13878 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13879 for branch on CTR insns (BO == 1a00t or 1a01t). */
13880 if ((insn & (0x14 << 21)) == (0x04 << 21))
13881 insn |= 0x02 << 21;
13882 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13883 insn |= 0x08 << 21;
13889 /* Invert 'y' bit if not the default. */
13890 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13891 insn ^= 0x01 << 21;
13894 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13897 /* NOP out calls to undefined weak functions.
13898 We can thus call a weak function without first
13899 checking whether the function is defined. */
13901 && h->elf.root.type == bfd_link_hash_undefweak
13902 && h->elf.dynindx == -1
13903 && r_type == R_PPC64_REL24
13907 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13913 /* Set `addend'. */
13918 info->callbacks->einfo
13919 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13920 input_bfd, (int) r_type, sym_name);
13922 bfd_set_error (bfd_error_bad_value);
13928 case R_PPC64_TLSGD:
13929 case R_PPC64_TLSLD:
13930 case R_PPC64_TOCSAVE:
13931 case R_PPC64_GNU_VTINHERIT:
13932 case R_PPC64_GNU_VTENTRY:
13935 /* GOT16 relocations. Like an ADDR16 using the symbol's
13936 address in the GOT as relocation value instead of the
13937 symbol's value itself. Also, create a GOT entry for the
13938 symbol and put the symbol value there. */
13939 case R_PPC64_GOT_TLSGD16:
13940 case R_PPC64_GOT_TLSGD16_LO:
13941 case R_PPC64_GOT_TLSGD16_HI:
13942 case R_PPC64_GOT_TLSGD16_HA:
13943 tls_type = TLS_TLS | TLS_GD;
13946 case R_PPC64_GOT_TLSLD16:
13947 case R_PPC64_GOT_TLSLD16_LO:
13948 case R_PPC64_GOT_TLSLD16_HI:
13949 case R_PPC64_GOT_TLSLD16_HA:
13950 tls_type = TLS_TLS | TLS_LD;
13953 case R_PPC64_GOT_TPREL16_DS:
13954 case R_PPC64_GOT_TPREL16_LO_DS:
13955 case R_PPC64_GOT_TPREL16_HI:
13956 case R_PPC64_GOT_TPREL16_HA:
13957 tls_type = TLS_TLS | TLS_TPREL;
13960 case R_PPC64_GOT_DTPREL16_DS:
13961 case R_PPC64_GOT_DTPREL16_LO_DS:
13962 case R_PPC64_GOT_DTPREL16_HI:
13963 case R_PPC64_GOT_DTPREL16_HA:
13964 tls_type = TLS_TLS | TLS_DTPREL;
13967 case R_PPC64_GOT16:
13968 case R_PPC64_GOT16_LO:
13969 case R_PPC64_GOT16_HI:
13970 case R_PPC64_GOT16_HA:
13971 case R_PPC64_GOT16_DS:
13972 case R_PPC64_GOT16_LO_DS:
13975 /* Relocation is to the entry for this symbol in the global
13980 unsigned long indx = 0;
13981 struct got_entry *ent;
13983 if (tls_type == (TLS_TLS | TLS_LD)
13985 || !h->elf.def_dynamic))
13986 ent = ppc64_tlsld_got (input_bfd);
13992 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13993 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13996 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13997 /* This is actually a static link, or it is a
13998 -Bsymbolic link and the symbol is defined
13999 locally, or the symbol was forced to be local
14000 because of a version file. */
14004 BFD_ASSERT (h->elf.dynindx != -1);
14005 indx = h->elf.dynindx;
14006 unresolved_reloc = FALSE;
14008 ent = h->elf.got.glist;
14012 if (local_got_ents == NULL)
14014 ent = local_got_ents[r_symndx];
14017 for (; ent != NULL; ent = ent->next)
14018 if (ent->addend == orig_rel.r_addend
14019 && ent->owner == input_bfd
14020 && ent->tls_type == tls_type)
14026 if (ent->is_indirect)
14027 ent = ent->got.ent;
14028 offp = &ent->got.offset;
14029 got = ppc64_elf_tdata (ent->owner)->got;
14033 /* The offset must always be a multiple of 8. We use the
14034 least significant bit to record whether we have already
14035 processed this entry. */
14037 if ((off & 1) != 0)
14041 /* Generate relocs for the dynamic linker, except in
14042 the case of TLSLD where we'll use one entry per
14050 ? h->elf.type == STT_GNU_IFUNC
14051 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14053 relgot = htab->elf.irelplt;
14054 else if ((info->shared || indx != 0)
14056 || (tls_type == (TLS_TLS | TLS_LD)
14057 && !h->elf.def_dynamic)
14058 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14059 || h->elf.root.type != bfd_link_hash_undefweak))
14060 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14061 if (relgot != NULL)
14063 outrel.r_offset = (got->output_section->vma
14064 + got->output_offset
14066 outrel.r_addend = addend;
14067 if (tls_type & (TLS_LD | TLS_GD))
14069 outrel.r_addend = 0;
14070 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14071 if (tls_type == (TLS_TLS | TLS_GD))
14073 loc = relgot->contents;
14074 loc += (relgot->reloc_count++
14075 * sizeof (Elf64_External_Rela));
14076 bfd_elf64_swap_reloca_out (output_bfd,
14078 outrel.r_offset += 8;
14079 outrel.r_addend = addend;
14081 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14084 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14085 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14086 else if (tls_type == (TLS_TLS | TLS_TPREL))
14087 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14088 else if (indx != 0)
14089 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14093 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14095 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14097 /* Write the .got section contents for the sake
14099 loc = got->contents + off;
14100 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14104 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14106 outrel.r_addend += relocation;
14107 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14108 outrel.r_addend -= htab->elf.tls_sec->vma;
14110 loc = relgot->contents;
14111 loc += (relgot->reloc_count++
14112 * sizeof (Elf64_External_Rela));
14113 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14116 /* Init the .got section contents here if we're not
14117 emitting a reloc. */
14120 relocation += addend;
14121 if (tls_type == (TLS_TLS | TLS_LD))
14123 else if (tls_type != 0)
14125 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14126 if (tls_type == (TLS_TLS | TLS_TPREL))
14127 relocation += DTP_OFFSET - TP_OFFSET;
14129 if (tls_type == (TLS_TLS | TLS_GD))
14131 bfd_put_64 (output_bfd, relocation,
14132 got->contents + off + 8);
14137 bfd_put_64 (output_bfd, relocation,
14138 got->contents + off);
14142 if (off >= (bfd_vma) -2)
14145 relocation = got->output_section->vma + got->output_offset + off;
14146 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14150 case R_PPC64_PLT16_HA:
14151 case R_PPC64_PLT16_HI:
14152 case R_PPC64_PLT16_LO:
14153 case R_PPC64_PLT32:
14154 case R_PPC64_PLT64:
14155 /* Relocation is to the entry for this symbol in the
14156 procedure linkage table. */
14158 /* Resolve a PLT reloc against a local symbol directly,
14159 without using the procedure linkage table. */
14163 /* It's possible that we didn't make a PLT entry for this
14164 symbol. This happens when statically linking PIC code,
14165 or when using -Bsymbolic. Go find a match if there is a
14167 if (htab->elf.splt != NULL)
14169 struct plt_entry *ent;
14170 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14171 if (ent->plt.offset != (bfd_vma) -1
14172 && ent->addend == orig_rel.r_addend)
14174 relocation = (htab->elf.splt->output_section->vma
14175 + htab->elf.splt->output_offset
14176 + ent->plt.offset);
14177 unresolved_reloc = FALSE;
14184 /* Relocation value is TOC base. */
14185 relocation = TOCstart;
14186 if (r_symndx == STN_UNDEF)
14187 relocation += htab->stub_group[input_section->id].toc_off;
14188 else if (unresolved_reloc)
14190 else if (sec != NULL && sec->id <= htab->top_id)
14191 relocation += htab->stub_group[sec->id].toc_off;
14193 unresolved_reloc = TRUE;
14196 /* TOC16 relocs. We want the offset relative to the TOC base,
14197 which is the address of the start of the TOC plus 0x8000.
14198 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14200 case R_PPC64_TOC16:
14201 case R_PPC64_TOC16_LO:
14202 case R_PPC64_TOC16_HI:
14203 case R_PPC64_TOC16_DS:
14204 case R_PPC64_TOC16_LO_DS:
14205 case R_PPC64_TOC16_HA:
14206 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14209 /* Relocate against the beginning of the section. */
14210 case R_PPC64_SECTOFF:
14211 case R_PPC64_SECTOFF_LO:
14212 case R_PPC64_SECTOFF_HI:
14213 case R_PPC64_SECTOFF_DS:
14214 case R_PPC64_SECTOFF_LO_DS:
14215 case R_PPC64_SECTOFF_HA:
14217 addend -= sec->output_section->vma;
14220 case R_PPC64_REL16:
14221 case R_PPC64_REL16_LO:
14222 case R_PPC64_REL16_HI:
14223 case R_PPC64_REL16_HA:
14226 case R_PPC64_REL14:
14227 case R_PPC64_REL14_BRNTAKEN:
14228 case R_PPC64_REL14_BRTAKEN:
14229 case R_PPC64_REL24:
14232 case R_PPC64_TPREL16:
14233 case R_PPC64_TPREL16_LO:
14234 case R_PPC64_TPREL16_HI:
14235 case R_PPC64_TPREL16_HA:
14236 case R_PPC64_TPREL16_DS:
14237 case R_PPC64_TPREL16_LO_DS:
14238 case R_PPC64_TPREL16_HIGH:
14239 case R_PPC64_TPREL16_HIGHA:
14240 case R_PPC64_TPREL16_HIGHER:
14241 case R_PPC64_TPREL16_HIGHERA:
14242 case R_PPC64_TPREL16_HIGHEST:
14243 case R_PPC64_TPREL16_HIGHESTA:
14245 && h->elf.root.type == bfd_link_hash_undefweak
14246 && h->elf.dynindx == -1)
14248 /* Make this relocation against an undefined weak symbol
14249 resolve to zero. This is really just a tweak, since
14250 code using weak externs ought to check that they are
14251 defined before using them. */
14252 bfd_byte *p = contents + rel->r_offset - d_offset;
14254 insn = bfd_get_32 (output_bfd, p);
14255 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14257 bfd_put_32 (output_bfd, insn, p);
14260 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14262 /* The TPREL16 relocs shouldn't really be used in shared
14263 libs as they will result in DT_TEXTREL being set, but
14264 support them anyway. */
14268 case R_PPC64_DTPREL16:
14269 case R_PPC64_DTPREL16_LO:
14270 case R_PPC64_DTPREL16_HI:
14271 case R_PPC64_DTPREL16_HA:
14272 case R_PPC64_DTPREL16_DS:
14273 case R_PPC64_DTPREL16_LO_DS:
14274 case R_PPC64_DTPREL16_HIGH:
14275 case R_PPC64_DTPREL16_HIGHA:
14276 case R_PPC64_DTPREL16_HIGHER:
14277 case R_PPC64_DTPREL16_HIGHERA:
14278 case R_PPC64_DTPREL16_HIGHEST:
14279 case R_PPC64_DTPREL16_HIGHESTA:
14280 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14283 case R_PPC64_ADDR64_LOCAL:
14284 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14289 case R_PPC64_DTPMOD64:
14294 case R_PPC64_TPREL64:
14295 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14298 case R_PPC64_DTPREL64:
14299 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14302 /* Relocations that may need to be propagated if this is a
14304 case R_PPC64_REL30:
14305 case R_PPC64_REL32:
14306 case R_PPC64_REL64:
14307 case R_PPC64_ADDR14:
14308 case R_PPC64_ADDR14_BRNTAKEN:
14309 case R_PPC64_ADDR14_BRTAKEN:
14310 case R_PPC64_ADDR16:
14311 case R_PPC64_ADDR16_DS:
14312 case R_PPC64_ADDR16_HA:
14313 case R_PPC64_ADDR16_HI:
14314 case R_PPC64_ADDR16_HIGH:
14315 case R_PPC64_ADDR16_HIGHA:
14316 case R_PPC64_ADDR16_HIGHER:
14317 case R_PPC64_ADDR16_HIGHERA:
14318 case R_PPC64_ADDR16_HIGHEST:
14319 case R_PPC64_ADDR16_HIGHESTA:
14320 case R_PPC64_ADDR16_LO:
14321 case R_PPC64_ADDR16_LO_DS:
14322 case R_PPC64_ADDR24:
14323 case R_PPC64_ADDR32:
14324 case R_PPC64_ADDR64:
14325 case R_PPC64_UADDR16:
14326 case R_PPC64_UADDR32:
14327 case R_PPC64_UADDR64:
14329 if ((input_section->flags & SEC_ALLOC) == 0)
14332 if (NO_OPD_RELOCS && is_opd)
14337 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14338 || h->elf.root.type != bfd_link_hash_undefweak)
14339 && (must_be_dyn_reloc (info, r_type)
14340 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14341 || (ELIMINATE_COPY_RELOCS
14344 && h->elf.dynindx != -1
14345 && !h->elf.non_got_ref
14346 && !h->elf.def_regular)
14349 ? h->elf.type == STT_GNU_IFUNC
14350 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14352 bfd_boolean skip, relocate;
14356 /* When generating a dynamic object, these relocations
14357 are copied into the output file to be resolved at run
14363 out_off = _bfd_elf_section_offset (output_bfd, info,
14364 input_section, rel->r_offset);
14365 if (out_off == (bfd_vma) -1)
14367 else if (out_off == (bfd_vma) -2)
14368 skip = TRUE, relocate = TRUE;
14369 out_off += (input_section->output_section->vma
14370 + input_section->output_offset);
14371 outrel.r_offset = out_off;
14372 outrel.r_addend = rel->r_addend;
14374 /* Optimize unaligned reloc use. */
14375 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14376 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14377 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14378 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14379 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14380 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14381 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14382 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14383 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14386 memset (&outrel, 0, sizeof outrel);
14387 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14389 && r_type != R_PPC64_TOC)
14391 BFD_ASSERT (h->elf.dynindx != -1);
14392 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14396 /* This symbol is local, or marked to become local,
14397 or this is an opd section reloc which must point
14398 at a local function. */
14399 outrel.r_addend += relocation;
14400 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14402 if (is_opd && h != NULL)
14404 /* Lie about opd entries. This case occurs
14405 when building shared libraries and we
14406 reference a function in another shared
14407 lib. The same thing happens for a weak
14408 definition in an application that's
14409 overridden by a strong definition in a
14410 shared lib. (I believe this is a generic
14411 bug in binutils handling of weak syms.)
14412 In these cases we won't use the opd
14413 entry in this lib. */
14414 unresolved_reloc = FALSE;
14417 && r_type == R_PPC64_ADDR64
14419 ? h->elf.type == STT_GNU_IFUNC
14420 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14421 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14424 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14426 /* We need to relocate .opd contents for ld.so.
14427 Prelink also wants simple and consistent rules
14428 for relocs. This make all RELATIVE relocs have
14429 *r_offset equal to r_addend. */
14438 ? h->elf.type == STT_GNU_IFUNC
14439 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14441 info->callbacks->einfo
14442 (_("%P: %H: %s for indirect "
14443 "function `%T' unsupported\n"),
14444 input_bfd, input_section, rel->r_offset,
14445 ppc64_elf_howto_table[r_type]->name,
14449 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14451 else if (sec == NULL || sec->owner == NULL)
14453 bfd_set_error (bfd_error_bad_value);
14460 osec = sec->output_section;
14461 indx = elf_section_data (osec)->dynindx;
14465 if ((osec->flags & SEC_READONLY) == 0
14466 && htab->elf.data_index_section != NULL)
14467 osec = htab->elf.data_index_section;
14469 osec = htab->elf.text_index_section;
14470 indx = elf_section_data (osec)->dynindx;
14472 BFD_ASSERT (indx != 0);
14474 /* We are turning this relocation into one
14475 against a section symbol, so subtract out
14476 the output section's address but not the
14477 offset of the input section in the output
14479 outrel.r_addend -= osec->vma;
14482 outrel.r_info = ELF64_R_INFO (indx, r_type);
14486 sreloc = elf_section_data (input_section)->sreloc;
14488 ? h->elf.type == STT_GNU_IFUNC
14489 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14490 sreloc = htab->elf.irelplt;
14491 if (sreloc == NULL)
14494 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14497 loc = sreloc->contents;
14498 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14499 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14501 /* If this reloc is against an external symbol, it will
14502 be computed at runtime, so there's no need to do
14503 anything now. However, for the sake of prelink ensure
14504 that the section contents are a known value. */
14507 unresolved_reloc = FALSE;
14508 /* The value chosen here is quite arbitrary as ld.so
14509 ignores section contents except for the special
14510 case of .opd where the contents might be accessed
14511 before relocation. Choose zero, as that won't
14512 cause reloc overflow. */
14515 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14516 to improve backward compatibility with older
14518 if (r_type == R_PPC64_ADDR64)
14519 addend = outrel.r_addend;
14520 /* Adjust pc_relative relocs to have zero in *r_offset. */
14521 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14522 addend = (input_section->output_section->vma
14523 + input_section->output_offset
14530 case R_PPC64_GLOB_DAT:
14531 case R_PPC64_JMP_SLOT:
14532 case R_PPC64_JMP_IREL:
14533 case R_PPC64_RELATIVE:
14534 /* We shouldn't ever see these dynamic relocs in relocatable
14536 /* Fall through. */
14538 case R_PPC64_PLTGOT16:
14539 case R_PPC64_PLTGOT16_DS:
14540 case R_PPC64_PLTGOT16_HA:
14541 case R_PPC64_PLTGOT16_HI:
14542 case R_PPC64_PLTGOT16_LO:
14543 case R_PPC64_PLTGOT16_LO_DS:
14544 case R_PPC64_PLTREL32:
14545 case R_PPC64_PLTREL64:
14546 /* These ones haven't been implemented yet. */
14548 info->callbacks->einfo
14549 (_("%P: %B: %s is not supported for `%T'\n"),
14551 ppc64_elf_howto_table[r_type]->name, sym_name);
14553 bfd_set_error (bfd_error_invalid_operation);
14558 /* Multi-instruction sequences that access the TOC can be
14559 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14560 to nop; addi rb,r2,x; */
14566 case R_PPC64_GOT_TLSLD16_HI:
14567 case R_PPC64_GOT_TLSGD16_HI:
14568 case R_PPC64_GOT_TPREL16_HI:
14569 case R_PPC64_GOT_DTPREL16_HI:
14570 case R_PPC64_GOT16_HI:
14571 case R_PPC64_TOC16_HI:
14572 /* These relocs would only be useful if building up an
14573 offset to later add to r2, perhaps in an indexed
14574 addressing mode instruction. Don't try to optimize.
14575 Unfortunately, the possibility of someone building up an
14576 offset like this or even with the HA relocs, means that
14577 we need to check the high insn when optimizing the low
14581 case R_PPC64_GOT_TLSLD16_HA:
14582 case R_PPC64_GOT_TLSGD16_HA:
14583 case R_PPC64_GOT_TPREL16_HA:
14584 case R_PPC64_GOT_DTPREL16_HA:
14585 case R_PPC64_GOT16_HA:
14586 case R_PPC64_TOC16_HA:
14587 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14588 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14590 bfd_byte *p = contents + (rel->r_offset & ~3);
14591 bfd_put_32 (input_bfd, NOP, p);
14595 case R_PPC64_GOT_TLSLD16_LO:
14596 case R_PPC64_GOT_TLSGD16_LO:
14597 case R_PPC64_GOT_TPREL16_LO_DS:
14598 case R_PPC64_GOT_DTPREL16_LO_DS:
14599 case R_PPC64_GOT16_LO:
14600 case R_PPC64_GOT16_LO_DS:
14601 case R_PPC64_TOC16_LO:
14602 case R_PPC64_TOC16_LO_DS:
14603 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14604 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14606 bfd_byte *p = contents + (rel->r_offset & ~3);
14607 insn = bfd_get_32 (input_bfd, p);
14608 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14610 /* Transform addic to addi when we change reg. */
14611 insn &= ~((0x3f << 26) | (0x1f << 16));
14612 insn |= (14u << 26) | (2 << 16);
14616 insn &= ~(0x1f << 16);
14619 bfd_put_32 (input_bfd, insn, p);
14624 /* Do any further special processing. */
14625 howto = ppc64_elf_howto_table[(int) r_type];
14631 case R_PPC64_REL16_HA:
14632 case R_PPC64_ADDR16_HA:
14633 case R_PPC64_ADDR16_HIGHA:
14634 case R_PPC64_ADDR16_HIGHERA:
14635 case R_PPC64_ADDR16_HIGHESTA:
14636 case R_PPC64_TOC16_HA:
14637 case R_PPC64_SECTOFF_HA:
14638 case R_PPC64_TPREL16_HA:
14639 case R_PPC64_TPREL16_HIGHA:
14640 case R_PPC64_TPREL16_HIGHERA:
14641 case R_PPC64_TPREL16_HIGHESTA:
14642 case R_PPC64_DTPREL16_HA:
14643 case R_PPC64_DTPREL16_HIGHA:
14644 case R_PPC64_DTPREL16_HIGHERA:
14645 case R_PPC64_DTPREL16_HIGHESTA:
14646 /* It's just possible that this symbol is a weak symbol
14647 that's not actually defined anywhere. In that case,
14648 'sec' would be NULL, and we should leave the symbol
14649 alone (it will be set to zero elsewhere in the link). */
14654 case R_PPC64_GOT16_HA:
14655 case R_PPC64_PLTGOT16_HA:
14656 case R_PPC64_PLT16_HA:
14657 case R_PPC64_GOT_TLSGD16_HA:
14658 case R_PPC64_GOT_TLSLD16_HA:
14659 case R_PPC64_GOT_TPREL16_HA:
14660 case R_PPC64_GOT_DTPREL16_HA:
14661 /* Add 0x10000 if sign bit in 0:15 is set.
14662 Bits 0:15 are not used. */
14666 case R_PPC64_ADDR16_DS:
14667 case R_PPC64_ADDR16_LO_DS:
14668 case R_PPC64_GOT16_DS:
14669 case R_PPC64_GOT16_LO_DS:
14670 case R_PPC64_PLT16_LO_DS:
14671 case R_PPC64_SECTOFF_DS:
14672 case R_PPC64_SECTOFF_LO_DS:
14673 case R_PPC64_TOC16_DS:
14674 case R_PPC64_TOC16_LO_DS:
14675 case R_PPC64_PLTGOT16_DS:
14676 case R_PPC64_PLTGOT16_LO_DS:
14677 case R_PPC64_GOT_TPREL16_DS:
14678 case R_PPC64_GOT_TPREL16_LO_DS:
14679 case R_PPC64_GOT_DTPREL16_DS:
14680 case R_PPC64_GOT_DTPREL16_LO_DS:
14681 case R_PPC64_TPREL16_DS:
14682 case R_PPC64_TPREL16_LO_DS:
14683 case R_PPC64_DTPREL16_DS:
14684 case R_PPC64_DTPREL16_LO_DS:
14685 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14687 /* If this reloc is against an lq insn, then the value must be
14688 a multiple of 16. This is somewhat of a hack, but the
14689 "correct" way to do this by defining _DQ forms of all the
14690 _DS relocs bloats all reloc switches in this file. It
14691 doesn't seem to make much sense to use any of these relocs
14692 in data, so testing the insn should be safe. */
14693 if ((insn & (0x3f << 26)) == (56u << 26))
14695 if (((relocation + addend) & mask) != 0)
14697 info->callbacks->einfo
14698 (_("%P: %H: error: %s not a multiple of %u\n"),
14699 input_bfd, input_section, rel->r_offset,
14702 bfd_set_error (bfd_error_bad_value);
14709 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14710 because such sections are not SEC_ALLOC and thus ld.so will
14711 not process them. */
14712 if (unresolved_reloc
14713 && !((input_section->flags & SEC_DEBUGGING) != 0
14714 && h->elf.def_dynamic)
14715 && _bfd_elf_section_offset (output_bfd, info, input_section,
14716 rel->r_offset) != (bfd_vma) -1)
14718 info->callbacks->einfo
14719 (_("%P: %H: unresolvable %s against `%T'\n"),
14720 input_bfd, input_section, rel->r_offset,
14722 h->elf.root.root.string);
14726 /* 16-bit fields in insns mostly have signed values, but a
14727 few insns have 16-bit unsigned values. Really, we should
14728 have different reloc types. */
14729 if (howto->complain_on_overflow != complain_overflow_dont
14730 && howto->dst_mask == 0xffff
14731 && (input_section->flags & SEC_CODE) != 0)
14733 enum complain_overflow complain = complain_overflow_signed;
14735 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14736 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14737 complain = complain_overflow_bitfield;
14738 else if (howto->rightshift == 0
14739 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14740 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14741 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14742 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14743 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14744 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14745 complain = complain_overflow_unsigned;
14746 if (howto->complain_on_overflow != complain)
14748 alt_howto = *howto;
14749 alt_howto.complain_on_overflow = complain;
14750 howto = &alt_howto;
14754 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14755 rel->r_offset, relocation, addend);
14757 if (r != bfd_reloc_ok)
14759 char *more_info = NULL;
14760 const char *reloc_name = howto->name;
14762 if (reloc_dest != DEST_NORMAL)
14764 more_info = bfd_malloc (strlen (reloc_name) + 8);
14765 if (more_info != NULL)
14767 strcpy (more_info, reloc_name);
14768 strcat (more_info, (reloc_dest == DEST_OPD
14769 ? " (OPD)" : " (stub)"));
14770 reloc_name = more_info;
14774 if (r == bfd_reloc_overflow)
14779 && h->elf.root.type == bfd_link_hash_undefweak
14780 && howto->pc_relative)
14782 /* Assume this is a call protected by other code that
14783 detects the symbol is undefined. If this is the case,
14784 we can safely ignore the overflow. If not, the
14785 program is hosed anyway, and a little warning isn't
14791 if (!((*info->callbacks->reloc_overflow)
14792 (info, &h->elf.root, sym_name,
14793 reloc_name, orig_rel.r_addend,
14794 input_bfd, input_section, rel->r_offset)))
14799 info->callbacks->einfo
14800 (_("%P: %H: %s against `%T': error %d\n"),
14801 input_bfd, input_section, rel->r_offset,
14802 reloc_name, sym_name, (int) r);
14805 if (more_info != NULL)
14810 /* If we're emitting relocations, then shortly after this function
14811 returns, reloc offsets and addends for this section will be
14812 adjusted. Worse, reloc symbol indices will be for the output
14813 file rather than the input. Save a copy of the relocs for
14814 opd_entry_value. */
14815 if (is_opd && (info->emitrelocations || info->relocatable))
14818 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14819 rel = bfd_alloc (input_bfd, amt);
14820 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14821 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14824 memcpy (rel, relocs, amt);
14829 /* Adjust the value of any local symbols in opd sections. */
14832 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14833 const char *name ATTRIBUTE_UNUSED,
14834 Elf_Internal_Sym *elfsym,
14835 asection *input_sec,
14836 struct elf_link_hash_entry *h)
14838 struct _opd_sec_data *opd;
14845 opd = get_opd_info (input_sec);
14846 if (opd == NULL || opd->adjust == NULL)
14849 value = elfsym->st_value - input_sec->output_offset;
14850 if (!info->relocatable)
14851 value -= input_sec->output_section->vma;
14853 adjust = opd->adjust[OPD_NDX (value)];
14857 elfsym->st_value += adjust;
14861 /* Finish up dynamic symbol handling. We set the contents of various
14862 dynamic sections here. */
14865 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14866 struct bfd_link_info *info,
14867 struct elf_link_hash_entry *h,
14868 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14870 struct ppc_link_hash_table *htab;
14871 struct plt_entry *ent;
14872 Elf_Internal_Rela rela;
14875 htab = ppc_hash_table (info);
14879 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14880 if (ent->plt.offset != (bfd_vma) -1)
14882 /* This symbol has an entry in the procedure linkage
14883 table. Set it up. */
14884 if (!htab->elf.dynamic_sections_created
14885 || h->dynindx == -1)
14887 BFD_ASSERT (h->type == STT_GNU_IFUNC
14889 && (h->root.type == bfd_link_hash_defined
14890 || h->root.type == bfd_link_hash_defweak));
14891 rela.r_offset = (htab->elf.iplt->output_section->vma
14892 + htab->elf.iplt->output_offset
14893 + ent->plt.offset);
14895 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14897 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14898 rela.r_addend = (h->root.u.def.value
14899 + h->root.u.def.section->output_offset
14900 + h->root.u.def.section->output_section->vma
14902 loc = (htab->elf.irelplt->contents
14903 + (htab->elf.irelplt->reloc_count++
14904 * sizeof (Elf64_External_Rela)));
14908 rela.r_offset = (htab->elf.splt->output_section->vma
14909 + htab->elf.splt->output_offset
14910 + ent->plt.offset);
14911 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14912 rela.r_addend = ent->addend;
14913 loc = (htab->elf.srelplt->contents
14914 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14915 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14917 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14919 if (!htab->opd_abi)
14921 if (!h->def_regular)
14923 /* Mark the symbol as undefined, rather than as
14924 defined in glink. Leave the value if there were
14925 any relocations where pointer equality matters
14926 (this is a clue for the dynamic linker, to make
14927 function pointer comparisons work between an
14928 application and shared library), otherwise set it
14930 sym->st_shndx = SHN_UNDEF;
14931 if (!h->pointer_equality_needed)
14933 else if (!h->ref_regular_nonweak)
14935 /* This breaks function pointer comparisons, but
14936 that is better than breaking tests for a NULL
14937 function pointer. */
14946 /* This symbol needs a copy reloc. Set it up. */
14948 if (h->dynindx == -1
14949 || (h->root.type != bfd_link_hash_defined
14950 && h->root.type != bfd_link_hash_defweak)
14951 || htab->relbss == NULL)
14954 rela.r_offset = (h->root.u.def.value
14955 + h->root.u.def.section->output_section->vma
14956 + h->root.u.def.section->output_offset);
14957 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14959 loc = htab->relbss->contents;
14960 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14961 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14967 /* Used to decide how to sort relocs in an optimal manner for the
14968 dynamic linker, before writing them out. */
14970 static enum elf_reloc_type_class
14971 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14972 const asection *rel_sec,
14973 const Elf_Internal_Rela *rela)
14975 enum elf_ppc64_reloc_type r_type;
14976 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14978 if (rel_sec == htab->elf.irelplt)
14979 return reloc_class_ifunc;
14981 r_type = ELF64_R_TYPE (rela->r_info);
14984 case R_PPC64_RELATIVE:
14985 return reloc_class_relative;
14986 case R_PPC64_JMP_SLOT:
14987 return reloc_class_plt;
14989 return reloc_class_copy;
14991 return reloc_class_normal;
14995 /* Finish up the dynamic sections. */
14998 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14999 struct bfd_link_info *info)
15001 struct ppc_link_hash_table *htab;
15005 htab = ppc_hash_table (info);
15009 dynobj = htab->elf.dynobj;
15010 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15012 if (htab->elf.dynamic_sections_created)
15014 Elf64_External_Dyn *dyncon, *dynconend;
15016 if (sdyn == NULL || htab->elf.sgot == NULL)
15019 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15020 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15021 for (; dyncon < dynconend; dyncon++)
15023 Elf_Internal_Dyn dyn;
15026 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15033 case DT_PPC64_GLINK:
15035 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15036 /* We stupidly defined DT_PPC64_GLINK to be the start
15037 of glink rather than the first entry point, which is
15038 what ld.so needs, and now have a bigger stub to
15039 support automatic multiple TOCs. */
15040 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15044 s = bfd_get_section_by_name (output_bfd, ".opd");
15047 dyn.d_un.d_ptr = s->vma;
15051 if (htab->do_multi_toc && htab->multi_toc_needed)
15052 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15055 case DT_PPC64_OPDSZ:
15056 s = bfd_get_section_by_name (output_bfd, ".opd");
15059 dyn.d_un.d_val = s->size;
15063 s = htab->elf.splt;
15064 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15068 s = htab->elf.srelplt;
15069 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15073 dyn.d_un.d_val = htab->elf.srelplt->size;
15077 /* Don't count procedure linkage table relocs in the
15078 overall reloc count. */
15079 s = htab->elf.srelplt;
15082 dyn.d_un.d_val -= s->size;
15086 /* We may not be using the standard ELF linker script.
15087 If .rela.plt is the first .rela section, we adjust
15088 DT_RELA to not include it. */
15089 s = htab->elf.srelplt;
15092 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15094 dyn.d_un.d_ptr += s->size;
15098 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15102 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15104 /* Fill in the first entry in the global offset table.
15105 We use it to hold the link-time TOCbase. */
15106 bfd_put_64 (output_bfd,
15107 elf_gp (output_bfd) + TOC_BASE_OFF,
15108 htab->elf.sgot->contents);
15110 /* Set .got entry size. */
15111 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15114 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15116 /* Set .plt entry size. */
15117 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15118 = PLT_ENTRY_SIZE (htab);
15121 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15122 brlt ourselves if emitrelocations. */
15123 if (htab->brlt != NULL
15124 && htab->brlt->reloc_count != 0
15125 && !_bfd_elf_link_output_relocs (output_bfd,
15127 elf_section_data (htab->brlt)->rela.hdr,
15128 elf_section_data (htab->brlt)->relocs,
15132 if (htab->glink != NULL
15133 && htab->glink->reloc_count != 0
15134 && !_bfd_elf_link_output_relocs (output_bfd,
15136 elf_section_data (htab->glink)->rela.hdr,
15137 elf_section_data (htab->glink)->relocs,
15141 if (htab->glink_eh_frame != NULL
15142 && htab->glink_eh_frame->size != 0)
15146 asection *stub_sec;
15148 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15149 for (stub_sec = htab->params->stub_bfd->sections;
15151 stub_sec = stub_sec->next)
15152 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15158 /* Offset to stub section. */
15159 val = (stub_sec->output_section->vma
15160 + stub_sec->output_offset);
15161 val -= (htab->glink_eh_frame->output_section->vma
15162 + htab->glink_eh_frame->output_offset
15163 + (p - htab->glink_eh_frame->contents));
15164 if (val + 0x80000000 > 0xffffffff)
15166 info->callbacks->einfo
15167 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15171 bfd_put_32 (dynobj, val, p);
15173 /* stub section size. */
15175 /* Augmentation. */
15180 if (htab->glink != NULL && htab->glink->size != 0)
15186 /* Offset to .glink. */
15187 val = (htab->glink->output_section->vma
15188 + htab->glink->output_offset
15190 val -= (htab->glink_eh_frame->output_section->vma
15191 + htab->glink_eh_frame->output_offset
15192 + (p - htab->glink_eh_frame->contents));
15193 if (val + 0x80000000 > 0xffffffff)
15195 info->callbacks->einfo
15196 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15197 htab->glink->name);
15200 bfd_put_32 (dynobj, val, p);
15204 /* Augmentation. */
15210 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15211 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15212 htab->glink_eh_frame,
15213 htab->glink_eh_frame->contents))
15217 /* We need to handle writing out multiple GOT sections ourselves,
15218 since we didn't add them to DYNOBJ. We know dynobj is the first
15220 while ((dynobj = dynobj->link.next) != NULL)
15224 if (!is_ppc64_elf (dynobj))
15227 s = ppc64_elf_tdata (dynobj)->got;
15230 && s->output_section != bfd_abs_section_ptr
15231 && !bfd_set_section_contents (output_bfd, s->output_section,
15232 s->contents, s->output_offset,
15235 s = ppc64_elf_tdata (dynobj)->relgot;
15238 && s->output_section != bfd_abs_section_ptr
15239 && !bfd_set_section_contents (output_bfd, s->output_section,
15240 s->contents, s->output_offset,
15248 #include "elf64-target.h"
15250 /* FreeBSD support */
15252 #undef TARGET_LITTLE_SYM
15253 #undef TARGET_LITTLE_NAME
15255 #undef TARGET_BIG_SYM
15256 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15257 #undef TARGET_BIG_NAME
15258 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15261 #define ELF_OSABI ELFOSABI_FREEBSD
15264 #define elf64_bed elf64_powerpc_fbsd_bed
15266 #include "elf64-target.h"