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
141 /* TOC base alignment. */
142 #define TOC_BASE_ALIGN 256
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
177 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
178 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
179 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
181 /* glink call stub instructions. We enter with the index in R0. */
182 #define GLINK_CALL_STUB_SIZE (16*4)
186 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
187 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
189 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
190 /* ld %2,(0b-1b)(%11) */
191 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
192 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
198 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
199 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
200 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
201 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
202 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
205 #define NOP 0x60000000
207 /* Some other nops. */
208 #define CROR_151515 0x4def7b82
209 #define CROR_313131 0x4ffffb82
211 /* .glink entries for the first 32k functions are two instructions. */
212 #define LI_R0_0 0x38000000 /* li %r0,0 */
213 #define B_DOT 0x48000000 /* b . */
215 /* After that, we need two instructions to load the index, followed by
217 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
218 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
220 /* Instructions used by the save and restore reg functions. */
221 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
222 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
223 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
224 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
225 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
226 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
227 #define LI_R12_0 0x39800000 /* li %r12,0 */
228 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
229 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
230 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
231 #define BLR 0x4e800020 /* blr */
233 /* Since .opd is an array of descriptors and each entry will end up
234 with identical R_PPC64_RELATIVE relocs, there is really no need to
235 propagate .opd relocs; The dynamic linker should be taught to
236 relocate .opd without reloc entries. */
237 #ifndef NO_OPD_RELOCS
238 #define NO_OPD_RELOCS 0
242 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
246 abiversion (bfd *abfd)
248 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
252 set_abiversion (bfd *abfd, int ver)
254 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
255 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
258 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
260 /* Relocation HOWTO's. */
261 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
263 static reloc_howto_type ppc64_elf_howto_raw[] = {
264 /* This reloc does nothing. */
265 HOWTO (R_PPC64_NONE, /* type */
267 3, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_dont, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_NONE", /* name */
274 FALSE, /* partial_inplace */
277 FALSE), /* pcrel_offset */
279 /* A standard 32 bit relocation. */
280 HOWTO (R_PPC64_ADDR32, /* type */
282 2, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_bitfield, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR32", /* name */
289 FALSE, /* partial_inplace */
291 0xffffffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* An absolute 26 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC64_ADDR24, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC64_ADDR24", /* name */
305 FALSE, /* partial_inplace */
307 0x03fffffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* A standard 16 bit relocation. */
311 HOWTO (R_PPC64_ADDR16, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE, /* pc_relative */
317 complain_overflow_bitfield, /* complain_on_overflow */
318 bfd_elf_generic_reloc, /* special_function */
319 "R_PPC64_ADDR16", /* name */
320 FALSE, /* partial_inplace */
322 0xffff, /* dst_mask */
323 FALSE), /* pcrel_offset */
325 /* A 16 bit relocation without overflow. */
326 HOWTO (R_PPC64_ADDR16_LO, /* type */
328 1, /* size (0 = byte, 1 = short, 2 = long) */
330 FALSE, /* pc_relative */
332 complain_overflow_dont,/* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_PPC64_ADDR16_LO", /* name */
335 FALSE, /* partial_inplace */
337 0xffff, /* dst_mask */
338 FALSE), /* pcrel_offset */
340 /* Bits 16-31 of an address. */
341 HOWTO (R_PPC64_ADDR16_HI, /* type */
343 1, /* size (0 = byte, 1 = short, 2 = long) */
345 FALSE, /* pc_relative */
347 complain_overflow_signed, /* complain_on_overflow */
348 bfd_elf_generic_reloc, /* special_function */
349 "R_PPC64_ADDR16_HI", /* name */
350 FALSE, /* partial_inplace */
352 0xffff, /* dst_mask */
353 FALSE), /* pcrel_offset */
355 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
356 bits, treated as a signed number, is negative. */
357 HOWTO (R_PPC64_ADDR16_HA, /* type */
359 1, /* size (0 = byte, 1 = short, 2 = long) */
361 FALSE, /* pc_relative */
363 complain_overflow_signed, /* complain_on_overflow */
364 ppc64_elf_ha_reloc, /* special_function */
365 "R_PPC64_ADDR16_HA", /* name */
366 FALSE, /* partial_inplace */
368 0xffff, /* dst_mask */
369 FALSE), /* pcrel_offset */
371 /* An absolute 16 bit branch; the lower two bits must be zero.
372 FIXME: we don't check that, we just clear them. */
373 HOWTO (R_PPC64_ADDR14, /* type */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
377 FALSE, /* pc_relative */
379 complain_overflow_signed, /* complain_on_overflow */
380 ppc64_elf_branch_reloc, /* special_function */
381 "R_PPC64_ADDR14", /* name */
382 FALSE, /* partial_inplace */
384 0x0000fffc, /* dst_mask */
385 FALSE), /* pcrel_offset */
387 /* An absolute 16 bit branch, for which bit 10 should be set to
388 indicate that the branch is expected to be taken. The lower two
389 bits must be zero. */
390 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
394 FALSE, /* pc_relative */
396 complain_overflow_signed, /* complain_on_overflow */
397 ppc64_elf_brtaken_reloc, /* special_function */
398 "R_PPC64_ADDR14_BRTAKEN",/* name */
399 FALSE, /* partial_inplace */
401 0x0000fffc, /* dst_mask */
402 FALSE), /* pcrel_offset */
404 /* An absolute 16 bit branch, for which bit 10 should be set to
405 indicate that the branch is not expected to be taken. The lower
406 two bits must be zero. */
407 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
411 FALSE, /* pc_relative */
413 complain_overflow_signed, /* complain_on_overflow */
414 ppc64_elf_brtaken_reloc, /* special_function */
415 "R_PPC64_ADDR14_BRNTAKEN",/* name */
416 FALSE, /* partial_inplace */
418 0x0000fffc, /* dst_mask */
419 FALSE), /* pcrel_offset */
421 /* A relative 26 bit branch; the lower two bits must be zero. */
422 HOWTO (R_PPC64_REL24, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 TRUE, /* pc_relative */
428 complain_overflow_signed, /* complain_on_overflow */
429 ppc64_elf_branch_reloc, /* special_function */
430 "R_PPC64_REL24", /* name */
431 FALSE, /* partial_inplace */
433 0x03fffffc, /* dst_mask */
434 TRUE), /* pcrel_offset */
436 /* A relative 16 bit branch; the lower two bits must be zero. */
437 HOWTO (R_PPC64_REL14, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 TRUE, /* pc_relative */
443 complain_overflow_signed, /* complain_on_overflow */
444 ppc64_elf_branch_reloc, /* special_function */
445 "R_PPC64_REL14", /* name */
446 FALSE, /* partial_inplace */
448 0x0000fffc, /* dst_mask */
449 TRUE), /* pcrel_offset */
451 /* A relative 16 bit branch. Bit 10 should be set to indicate that
452 the branch is expected to be taken. The lower two bits must be
454 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 TRUE, /* pc_relative */
460 complain_overflow_signed, /* complain_on_overflow */
461 ppc64_elf_brtaken_reloc, /* special_function */
462 "R_PPC64_REL14_BRTAKEN", /* name */
463 FALSE, /* partial_inplace */
465 0x0000fffc, /* dst_mask */
466 TRUE), /* pcrel_offset */
468 /* A relative 16 bit branch. Bit 10 should be set to indicate that
469 the branch is not expected to be taken. The lower two bits must
471 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
475 TRUE, /* pc_relative */
477 complain_overflow_signed, /* complain_on_overflow */
478 ppc64_elf_brtaken_reloc, /* special_function */
479 "R_PPC64_REL14_BRNTAKEN",/* name */
480 FALSE, /* partial_inplace */
482 0x0000fffc, /* dst_mask */
483 TRUE), /* pcrel_offset */
485 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
487 HOWTO (R_PPC64_GOT16, /* type */
489 1, /* size (0 = byte, 1 = short, 2 = long) */
491 FALSE, /* pc_relative */
493 complain_overflow_signed, /* complain_on_overflow */
494 ppc64_elf_unhandled_reloc, /* special_function */
495 "R_PPC64_GOT16", /* name */
496 FALSE, /* partial_inplace */
498 0xffff, /* dst_mask */
499 FALSE), /* pcrel_offset */
501 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
503 HOWTO (R_PPC64_GOT16_LO, /* type */
505 1, /* size (0 = byte, 1 = short, 2 = long) */
507 FALSE, /* pc_relative */
509 complain_overflow_dont, /* complain_on_overflow */
510 ppc64_elf_unhandled_reloc, /* special_function */
511 "R_PPC64_GOT16_LO", /* name */
512 FALSE, /* partial_inplace */
514 0xffff, /* dst_mask */
515 FALSE), /* pcrel_offset */
517 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
519 HOWTO (R_PPC64_GOT16_HI, /* type */
521 1, /* size (0 = byte, 1 = short, 2 = long) */
523 FALSE, /* pc_relative */
525 complain_overflow_signed,/* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
527 "R_PPC64_GOT16_HI", /* name */
528 FALSE, /* partial_inplace */
530 0xffff, /* dst_mask */
531 FALSE), /* pcrel_offset */
533 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
535 HOWTO (R_PPC64_GOT16_HA, /* type */
537 1, /* size (0 = byte, 1 = short, 2 = long) */
539 FALSE, /* pc_relative */
541 complain_overflow_signed,/* complain_on_overflow */
542 ppc64_elf_unhandled_reloc, /* special_function */
543 "R_PPC64_GOT16_HA", /* name */
544 FALSE, /* partial_inplace */
546 0xffff, /* dst_mask */
547 FALSE), /* pcrel_offset */
549 /* This is used only by the dynamic linker. The symbol should exist
550 both in the object being run and in some shared library. The
551 dynamic linker copies the data addressed by the symbol from the
552 shared library into the object, because the object being
553 run has to have the data at some particular address. */
554 HOWTO (R_PPC64_COPY, /* type */
556 0, /* this one is variable size */
558 FALSE, /* pc_relative */
560 complain_overflow_dont, /* complain_on_overflow */
561 ppc64_elf_unhandled_reloc, /* special_function */
562 "R_PPC64_COPY", /* name */
563 FALSE, /* partial_inplace */
566 FALSE), /* pcrel_offset */
568 /* Like R_PPC64_ADDR64, but used when setting global offset table
570 HOWTO (R_PPC64_GLOB_DAT, /* type */
572 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
574 FALSE, /* pc_relative */
576 complain_overflow_dont, /* complain_on_overflow */
577 ppc64_elf_unhandled_reloc, /* special_function */
578 "R_PPC64_GLOB_DAT", /* name */
579 FALSE, /* partial_inplace */
581 ONES (64), /* dst_mask */
582 FALSE), /* pcrel_offset */
584 /* Created by the link editor. Marks a procedure linkage table
585 entry for a symbol. */
586 HOWTO (R_PPC64_JMP_SLOT, /* type */
588 0, /* size (0 = byte, 1 = short, 2 = long) */
590 FALSE, /* pc_relative */
592 complain_overflow_dont, /* complain_on_overflow */
593 ppc64_elf_unhandled_reloc, /* special_function */
594 "R_PPC64_JMP_SLOT", /* name */
595 FALSE, /* partial_inplace */
598 FALSE), /* pcrel_offset */
600 /* Used only by the dynamic linker. When the object is run, this
601 doubleword64 is set to the load address of the object, plus the
603 HOWTO (R_PPC64_RELATIVE, /* type */
605 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
607 FALSE, /* pc_relative */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC64_RELATIVE", /* name */
612 FALSE, /* partial_inplace */
614 ONES (64), /* dst_mask */
615 FALSE), /* pcrel_offset */
617 /* Like R_PPC64_ADDR32, but may be unaligned. */
618 HOWTO (R_PPC64_UADDR32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC64_UADDR32", /* name */
627 FALSE, /* partial_inplace */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
632 /* Like R_PPC64_ADDR16, but may be unaligned. */
633 HOWTO (R_PPC64_UADDR16, /* type */
635 1, /* size (0 = byte, 1 = short, 2 = long) */
637 FALSE, /* pc_relative */
639 complain_overflow_bitfield, /* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_PPC64_UADDR16", /* name */
642 FALSE, /* partial_inplace */
644 0xffff, /* dst_mask */
645 FALSE), /* pcrel_offset */
647 /* 32-bit PC relative. */
648 HOWTO (R_PPC64_REL32, /* type */
650 2, /* size (0 = byte, 1 = short, 2 = long) */
652 TRUE, /* pc_relative */
654 complain_overflow_signed, /* complain_on_overflow */
655 bfd_elf_generic_reloc, /* special_function */
656 "R_PPC64_REL32", /* name */
657 FALSE, /* partial_inplace */
659 0xffffffff, /* dst_mask */
660 TRUE), /* pcrel_offset */
662 /* 32-bit relocation to the symbol's procedure linkage table. */
663 HOWTO (R_PPC64_PLT32, /* type */
665 2, /* size (0 = byte, 1 = short, 2 = long) */
667 FALSE, /* pc_relative */
669 complain_overflow_bitfield, /* complain_on_overflow */
670 ppc64_elf_unhandled_reloc, /* special_function */
671 "R_PPC64_PLT32", /* name */
672 FALSE, /* partial_inplace */
674 0xffffffff, /* dst_mask */
675 FALSE), /* pcrel_offset */
677 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
678 FIXME: R_PPC64_PLTREL32 not supported. */
679 HOWTO (R_PPC64_PLTREL32, /* type */
681 2, /* size (0 = byte, 1 = short, 2 = long) */
683 TRUE, /* pc_relative */
685 complain_overflow_signed, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_PPC64_PLTREL32", /* name */
688 FALSE, /* partial_inplace */
690 0xffffffff, /* dst_mask */
691 TRUE), /* pcrel_offset */
693 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
695 HOWTO (R_PPC64_PLT16_LO, /* type */
697 1, /* size (0 = byte, 1 = short, 2 = long) */
699 FALSE, /* pc_relative */
701 complain_overflow_dont, /* complain_on_overflow */
702 ppc64_elf_unhandled_reloc, /* special_function */
703 "R_PPC64_PLT16_LO", /* name */
704 FALSE, /* partial_inplace */
706 0xffff, /* dst_mask */
707 FALSE), /* pcrel_offset */
709 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
711 HOWTO (R_PPC64_PLT16_HI, /* type */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
715 FALSE, /* pc_relative */
717 complain_overflow_signed, /* complain_on_overflow */
718 ppc64_elf_unhandled_reloc, /* special_function */
719 "R_PPC64_PLT16_HI", /* name */
720 FALSE, /* partial_inplace */
722 0xffff, /* dst_mask */
723 FALSE), /* pcrel_offset */
725 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
727 HOWTO (R_PPC64_PLT16_HA, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_signed, /* complain_on_overflow */
734 ppc64_elf_unhandled_reloc, /* special_function */
735 "R_PPC64_PLT16_HA", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* 16-bit section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE, /* pc_relative */
748 complain_overflow_signed, /* complain_on_overflow */
749 ppc64_elf_sectoff_reloc, /* special_function */
750 "R_PPC64_SECTOFF", /* name */
751 FALSE, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE), /* pcrel_offset */
756 /* Like R_PPC64_SECTOFF, but no overflow warning. */
757 HOWTO (R_PPC64_SECTOFF_LO, /* type */
759 1, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 ppc64_elf_sectoff_reloc, /* special_function */
765 "R_PPC64_SECTOFF_LO", /* name */
766 FALSE, /* partial_inplace */
768 0xffff, /* dst_mask */
769 FALSE), /* pcrel_offset */
771 /* 16-bit upper half section relative relocation. */
772 HOWTO (R_PPC64_SECTOFF_HI, /* type */
774 1, /* size (0 = byte, 1 = short, 2 = long) */
776 FALSE, /* pc_relative */
778 complain_overflow_signed, /* complain_on_overflow */
779 ppc64_elf_sectoff_reloc, /* special_function */
780 "R_PPC64_SECTOFF_HI", /* name */
781 FALSE, /* partial_inplace */
783 0xffff, /* dst_mask */
784 FALSE), /* pcrel_offset */
786 /* 16-bit upper half adjusted section relative relocation. */
787 HOWTO (R_PPC64_SECTOFF_HA, /* type */
789 1, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE, /* pc_relative */
793 complain_overflow_signed, /* complain_on_overflow */
794 ppc64_elf_sectoff_ha_reloc, /* special_function */
795 "R_PPC64_SECTOFF_HA", /* name */
796 FALSE, /* partial_inplace */
798 0xffff, /* dst_mask */
799 FALSE), /* pcrel_offset */
801 /* Like R_PPC64_REL24 without touching the two least significant bits. */
802 HOWTO (R_PPC64_REL30, /* type */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 TRUE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC64_REL30", /* name */
811 FALSE, /* partial_inplace */
813 0xfffffffc, /* dst_mask */
814 TRUE), /* pcrel_offset */
816 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
818 /* A standard 64-bit relocation. */
819 HOWTO (R_PPC64_ADDR64, /* type */
821 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
823 FALSE, /* pc_relative */
825 complain_overflow_dont, /* complain_on_overflow */
826 bfd_elf_generic_reloc, /* special_function */
827 "R_PPC64_ADDR64", /* name */
828 FALSE, /* partial_inplace */
830 ONES (64), /* dst_mask */
831 FALSE), /* pcrel_offset */
833 /* The bits 32-47 of an address. */
834 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
836 1, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE, /* pc_relative */
840 complain_overflow_dont, /* complain_on_overflow */
841 bfd_elf_generic_reloc, /* special_function */
842 "R_PPC64_ADDR16_HIGHER", /* name */
843 FALSE, /* partial_inplace */
845 0xffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
848 /* The bits 32-47 of an address, plus 1 if the contents of the low
849 16 bits, treated as a signed number, is negative. */
850 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_dont, /* complain_on_overflow */
857 ppc64_elf_ha_reloc, /* special_function */
858 "R_PPC64_ADDR16_HIGHERA", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* The bits 48-63 of an address. */
865 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 bfd_elf_generic_reloc, /* special_function */
873 "R_PPC64_ADDR16_HIGHEST", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* The bits 48-63 of an address, plus 1 if the contents of the low
880 16 bits, treated as a signed number, is negative. */
881 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
883 1, /* size (0 = byte, 1 = short, 2 = long) */
885 FALSE, /* pc_relative */
887 complain_overflow_dont, /* complain_on_overflow */
888 ppc64_elf_ha_reloc, /* special_function */
889 "R_PPC64_ADDR16_HIGHESTA", /* name */
890 FALSE, /* partial_inplace */
892 0xffff, /* dst_mask */
893 FALSE), /* pcrel_offset */
895 /* Like ADDR64, but may be unaligned. */
896 HOWTO (R_PPC64_UADDR64, /* type */
898 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
900 FALSE, /* pc_relative */
902 complain_overflow_dont, /* complain_on_overflow */
903 bfd_elf_generic_reloc, /* special_function */
904 "R_PPC64_UADDR64", /* name */
905 FALSE, /* partial_inplace */
907 ONES (64), /* dst_mask */
908 FALSE), /* pcrel_offset */
910 /* 64-bit relative relocation. */
911 HOWTO (R_PPC64_REL64, /* type */
913 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
915 TRUE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 bfd_elf_generic_reloc, /* special_function */
919 "R_PPC64_REL64", /* name */
920 FALSE, /* partial_inplace */
922 ONES (64), /* dst_mask */
923 TRUE), /* pcrel_offset */
925 /* 64-bit relocation to the symbol's procedure linkage table. */
926 HOWTO (R_PPC64_PLT64, /* type */
928 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
930 FALSE, /* pc_relative */
932 complain_overflow_dont, /* complain_on_overflow */
933 ppc64_elf_unhandled_reloc, /* special_function */
934 "R_PPC64_PLT64", /* name */
935 FALSE, /* partial_inplace */
937 ONES (64), /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* 64-bit PC relative relocation to the symbol's procedure linkage
942 /* FIXME: R_PPC64_PLTREL64 not supported. */
943 HOWTO (R_PPC64_PLTREL64, /* type */
945 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
947 TRUE, /* pc_relative */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc64_elf_unhandled_reloc, /* special_function */
951 "R_PPC64_PLTREL64", /* name */
952 FALSE, /* partial_inplace */
954 ONES (64), /* dst_mask */
955 TRUE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation. */
959 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
960 HOWTO (R_PPC64_TOC16, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_signed, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation without overflow. */
976 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
977 HOWTO (R_PPC64_TOC16_LO, /* type */
979 1, /* size (0 = byte, 1 = short, 2 = long) */
981 FALSE, /* pc_relative */
983 complain_overflow_dont, /* complain_on_overflow */
984 ppc64_elf_toc_reloc, /* special_function */
985 "R_PPC64_TOC16_LO", /* name */
986 FALSE, /* partial_inplace */
988 0xffff, /* dst_mask */
989 FALSE), /* pcrel_offset */
991 /* 16 bit TOC-relative relocation, high 16 bits. */
993 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
994 HOWTO (R_PPC64_TOC16_HI, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_signed, /* complain_on_overflow */
1001 ppc64_elf_toc_reloc, /* special_function */
1002 "R_PPC64_TOC16_HI", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1009 contents of the low 16 bits, treated as a signed number, is
1012 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1013 HOWTO (R_PPC64_TOC16_HA, /* type */
1014 16, /* rightshift */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 FALSE, /* pc_relative */
1019 complain_overflow_signed, /* complain_on_overflow */
1020 ppc64_elf_toc_ha_reloc, /* special_function */
1021 "R_PPC64_TOC16_HA", /* name */
1022 FALSE, /* partial_inplace */
1024 0xffff, /* dst_mask */
1025 FALSE), /* pcrel_offset */
1027 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1029 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1030 HOWTO (R_PPC64_TOC, /* type */
1032 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1034 FALSE, /* pc_relative */
1036 complain_overflow_dont, /* complain_on_overflow */
1037 ppc64_elf_toc64_reloc, /* special_function */
1038 "R_PPC64_TOC", /* name */
1039 FALSE, /* partial_inplace */
1041 ONES (64), /* dst_mask */
1042 FALSE), /* pcrel_offset */
1044 /* Like R_PPC64_GOT16, but also informs the link editor that the
1045 value to relocate may (!) refer to a PLT entry which the link
1046 editor (a) may replace with the symbol value. If the link editor
1047 is unable to fully resolve the symbol, it may (b) create a PLT
1048 entry and store the address to the new PLT entry in the GOT.
1049 This permits lazy resolution of function symbols at run time.
1050 The link editor may also skip all of this and just (c) emit a
1051 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1052 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1053 HOWTO (R_PPC64_PLTGOT16, /* type */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1057 FALSE, /* pc_relative */
1059 complain_overflow_signed, /* complain_on_overflow */
1060 ppc64_elf_unhandled_reloc, /* special_function */
1061 "R_PPC64_PLTGOT16", /* name */
1062 FALSE, /* partial_inplace */
1064 0xffff, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1067 /* Like R_PPC64_PLTGOT16, but without overflow. */
1068 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_dont, /* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_LO", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1084 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1085 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 FALSE, /* pc_relative */
1091 complain_overflow_signed, /* complain_on_overflow */
1092 ppc64_elf_unhandled_reloc, /* special_function */
1093 "R_PPC64_PLTGOT16_HI", /* name */
1094 FALSE, /* partial_inplace */
1096 0xffff, /* dst_mask */
1097 FALSE), /* pcrel_offset */
1099 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1100 1 if the contents of the low 16 bits, treated as a signed number,
1102 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1103 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1104 16, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_PLTGOT16_HA", /* name */
1112 FALSE, /* partial_inplace */
1114 0xffff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_ADDR16_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_signed, /* complain_on_overflow */
1125 bfd_elf_generic_reloc, /* special_function */
1126 "R_PPC64_ADDR16_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_dont,/* complain_on_overflow */
1140 bfd_elf_generic_reloc, /* special_function */
1141 "R_PPC64_ADDR16_LO_DS",/* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_GOT16_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_signed, /* complain_on_overflow */
1155 ppc64_elf_unhandled_reloc, /* special_function */
1156 "R_PPC64_GOT16_DS", /* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_unhandled_reloc, /* special_function */
1171 "R_PPC64_GOT16_LO_DS", /* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_unhandled_reloc, /* special_function */
1186 "R_PPC64_PLT16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_signed, /* complain_on_overflow */
1200 ppc64_elf_sectoff_reloc, /* special_function */
1201 "R_PPC64_SECTOFF_DS", /* name */
1202 FALSE, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1208 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE, /* pc_relative */
1214 complain_overflow_dont, /* complain_on_overflow */
1215 ppc64_elf_sectoff_reloc, /* special_function */
1216 "R_PPC64_SECTOFF_LO_DS",/* name */
1217 FALSE, /* partial_inplace */
1219 0xfffc, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1222 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1223 HOWTO (R_PPC64_TOC16_DS, /* type */
1225 1, /* size (0 = byte, 1 = short, 2 = long) */
1227 FALSE, /* pc_relative */
1229 complain_overflow_signed, /* complain_on_overflow */
1230 ppc64_elf_toc_reloc, /* special_function */
1231 "R_PPC64_TOC16_DS", /* name */
1232 FALSE, /* partial_inplace */
1234 0xfffc, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1237 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1238 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1240 1, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE, /* pc_relative */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 ppc64_elf_toc_reloc, /* special_function */
1246 "R_PPC64_TOC16_LO_DS", /* name */
1247 FALSE, /* partial_inplace */
1249 0xfffc, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1252 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1253 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1254 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1256 1, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE, /* pc_relative */
1260 complain_overflow_signed, /* complain_on_overflow */
1261 ppc64_elf_unhandled_reloc, /* special_function */
1262 "R_PPC64_PLTGOT16_DS", /* name */
1263 FALSE, /* partial_inplace */
1265 0xfffc, /* dst_mask */
1266 FALSE), /* pcrel_offset */
1268 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1269 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1270 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE, /* pc_relative */
1276 complain_overflow_dont, /* complain_on_overflow */
1277 ppc64_elf_unhandled_reloc, /* special_function */
1278 "R_PPC64_PLTGOT16_LO_DS",/* name */
1279 FALSE, /* partial_inplace */
1281 0xfffc, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1284 /* Marker relocs for TLS. */
1287 2, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE, /* pc_relative */
1291 complain_overflow_dont, /* complain_on_overflow */
1292 bfd_elf_generic_reloc, /* special_function */
1293 "R_PPC64_TLS", /* name */
1294 FALSE, /* partial_inplace */
1297 FALSE), /* pcrel_offset */
1299 HOWTO (R_PPC64_TLSGD,
1301 2, /* size (0 = byte, 1 = short, 2 = long) */
1303 FALSE, /* pc_relative */
1305 complain_overflow_dont, /* complain_on_overflow */
1306 bfd_elf_generic_reloc, /* special_function */
1307 "R_PPC64_TLSGD", /* name */
1308 FALSE, /* partial_inplace */
1311 FALSE), /* pcrel_offset */
1313 HOWTO (R_PPC64_TLSLD,
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_dont, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC64_TLSLD", /* name */
1322 FALSE, /* partial_inplace */
1325 FALSE), /* pcrel_offset */
1327 HOWTO (R_PPC64_TOCSAVE,
1329 2, /* size (0 = byte, 1 = short, 2 = long) */
1331 FALSE, /* pc_relative */
1333 complain_overflow_dont, /* complain_on_overflow */
1334 bfd_elf_generic_reloc, /* special_function */
1335 "R_PPC64_TOCSAVE", /* name */
1336 FALSE, /* partial_inplace */
1339 FALSE), /* pcrel_offset */
1341 /* Computes the load module index of the load module that contains the
1342 definition of its TLS sym. */
1343 HOWTO (R_PPC64_DTPMOD64,
1345 4, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE, /* pc_relative */
1349 complain_overflow_dont, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc, /* special_function */
1351 "R_PPC64_DTPMOD64", /* name */
1352 FALSE, /* partial_inplace */
1354 ONES (64), /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* Computes a dtv-relative displacement, the difference between the value
1358 of sym+add and the base address of the thread-local storage block that
1359 contains the definition of sym, minus 0x8000. */
1360 HOWTO (R_PPC64_DTPREL64,
1362 4, /* size (0 = byte, 1 = short, 2 = long) */
1364 FALSE, /* pc_relative */
1366 complain_overflow_dont, /* complain_on_overflow */
1367 ppc64_elf_unhandled_reloc, /* special_function */
1368 "R_PPC64_DTPREL64", /* name */
1369 FALSE, /* partial_inplace */
1371 ONES (64), /* dst_mask */
1372 FALSE), /* pcrel_offset */
1374 /* A 16 bit dtprel reloc. */
1375 HOWTO (R_PPC64_DTPREL16,
1377 1, /* size (0 = byte, 1 = short, 2 = long) */
1379 FALSE, /* pc_relative */
1381 complain_overflow_signed, /* complain_on_overflow */
1382 ppc64_elf_unhandled_reloc, /* special_function */
1383 "R_PPC64_DTPREL16", /* name */
1384 FALSE, /* partial_inplace */
1386 0xffff, /* dst_mask */
1387 FALSE), /* pcrel_offset */
1389 /* Like DTPREL16, but no overflow. */
1390 HOWTO (R_PPC64_DTPREL16_LO,
1392 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 FALSE, /* pc_relative */
1396 complain_overflow_dont, /* complain_on_overflow */
1397 ppc64_elf_unhandled_reloc, /* special_function */
1398 "R_PPC64_DTPREL16_LO", /* name */
1399 FALSE, /* partial_inplace */
1401 0xffff, /* dst_mask */
1402 FALSE), /* pcrel_offset */
1404 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1405 HOWTO (R_PPC64_DTPREL16_HI,
1406 16, /* rightshift */
1407 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 FALSE, /* pc_relative */
1411 complain_overflow_signed, /* complain_on_overflow */
1412 ppc64_elf_unhandled_reloc, /* special_function */
1413 "R_PPC64_DTPREL16_HI", /* name */
1414 FALSE, /* partial_inplace */
1416 0xffff, /* dst_mask */
1417 FALSE), /* pcrel_offset */
1419 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1420 HOWTO (R_PPC64_DTPREL16_HA,
1421 16, /* rightshift */
1422 1, /* size (0 = byte, 1 = short, 2 = long) */
1424 FALSE, /* pc_relative */
1426 complain_overflow_signed, /* complain_on_overflow */
1427 ppc64_elf_unhandled_reloc, /* special_function */
1428 "R_PPC64_DTPREL16_HA", /* name */
1429 FALSE, /* partial_inplace */
1431 0xffff, /* dst_mask */
1432 FALSE), /* pcrel_offset */
1434 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1435 HOWTO (R_PPC64_DTPREL16_HIGHER,
1436 32, /* rightshift */
1437 1, /* size (0 = byte, 1 = short, 2 = long) */
1439 FALSE, /* pc_relative */
1441 complain_overflow_dont, /* complain_on_overflow */
1442 ppc64_elf_unhandled_reloc, /* special_function */
1443 "R_PPC64_DTPREL16_HIGHER", /* name */
1444 FALSE, /* partial_inplace */
1446 0xffff, /* dst_mask */
1447 FALSE), /* pcrel_offset */
1449 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1450 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1451 32, /* rightshift */
1452 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 FALSE, /* pc_relative */
1456 complain_overflow_dont, /* complain_on_overflow */
1457 ppc64_elf_unhandled_reloc, /* special_function */
1458 "R_PPC64_DTPREL16_HIGHERA", /* name */
1459 FALSE, /* partial_inplace */
1461 0xffff, /* dst_mask */
1462 FALSE), /* pcrel_offset */
1464 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1465 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1466 48, /* rightshift */
1467 1, /* size (0 = byte, 1 = short, 2 = long) */
1469 FALSE, /* pc_relative */
1471 complain_overflow_dont, /* complain_on_overflow */
1472 ppc64_elf_unhandled_reloc, /* special_function */
1473 "R_PPC64_DTPREL16_HIGHEST", /* name */
1474 FALSE, /* partial_inplace */
1476 0xffff, /* dst_mask */
1477 FALSE), /* pcrel_offset */
1479 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1480 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1481 48, /* rightshift */
1482 1, /* size (0 = byte, 1 = short, 2 = long) */
1484 FALSE, /* pc_relative */
1486 complain_overflow_dont, /* complain_on_overflow */
1487 ppc64_elf_unhandled_reloc, /* special_function */
1488 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1489 FALSE, /* partial_inplace */
1491 0xffff, /* dst_mask */
1492 FALSE), /* pcrel_offset */
1494 /* Like DTPREL16, but for insns with a DS field. */
1495 HOWTO (R_PPC64_DTPREL16_DS,
1497 1, /* size (0 = byte, 1 = short, 2 = long) */
1499 FALSE, /* pc_relative */
1501 complain_overflow_signed, /* complain_on_overflow */
1502 ppc64_elf_unhandled_reloc, /* special_function */
1503 "R_PPC64_DTPREL16_DS", /* name */
1504 FALSE, /* partial_inplace */
1506 0xfffc, /* dst_mask */
1507 FALSE), /* pcrel_offset */
1509 /* Like DTPREL16_DS, but no overflow. */
1510 HOWTO (R_PPC64_DTPREL16_LO_DS,
1512 1, /* size (0 = byte, 1 = short, 2 = long) */
1514 FALSE, /* pc_relative */
1516 complain_overflow_dont, /* complain_on_overflow */
1517 ppc64_elf_unhandled_reloc, /* special_function */
1518 "R_PPC64_DTPREL16_LO_DS", /* name */
1519 FALSE, /* partial_inplace */
1521 0xfffc, /* dst_mask */
1522 FALSE), /* pcrel_offset */
1524 /* Computes a tp-relative displacement, the difference between the value of
1525 sym+add and the value of the thread pointer (r13). */
1526 HOWTO (R_PPC64_TPREL64,
1528 4, /* size (0 = byte, 1 = short, 2 = long) */
1530 FALSE, /* pc_relative */
1532 complain_overflow_dont, /* complain_on_overflow */
1533 ppc64_elf_unhandled_reloc, /* special_function */
1534 "R_PPC64_TPREL64", /* name */
1535 FALSE, /* partial_inplace */
1537 ONES (64), /* dst_mask */
1538 FALSE), /* pcrel_offset */
1540 /* A 16 bit tprel reloc. */
1541 HOWTO (R_PPC64_TPREL16,
1543 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 FALSE, /* pc_relative */
1547 complain_overflow_signed, /* complain_on_overflow */
1548 ppc64_elf_unhandled_reloc, /* special_function */
1549 "R_PPC64_TPREL16", /* name */
1550 FALSE, /* partial_inplace */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1555 /* Like TPREL16, but no overflow. */
1556 HOWTO (R_PPC64_TPREL16_LO,
1558 1, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE, /* pc_relative */
1562 complain_overflow_dont, /* complain_on_overflow */
1563 ppc64_elf_unhandled_reloc, /* special_function */
1564 "R_PPC64_TPREL16_LO", /* name */
1565 FALSE, /* partial_inplace */
1567 0xffff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1570 /* Like TPREL16_LO, but next higher group of 16 bits. */
1571 HOWTO (R_PPC64_TPREL16_HI,
1572 16, /* rightshift */
1573 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 FALSE, /* pc_relative */
1577 complain_overflow_signed, /* complain_on_overflow */
1578 ppc64_elf_unhandled_reloc, /* special_function */
1579 "R_PPC64_TPREL16_HI", /* name */
1580 FALSE, /* partial_inplace */
1582 0xffff, /* dst_mask */
1583 FALSE), /* pcrel_offset */
1585 /* Like TPREL16_HI, but adjust for low 16 bits. */
1586 HOWTO (R_PPC64_TPREL16_HA,
1587 16, /* rightshift */
1588 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 FALSE, /* pc_relative */
1592 complain_overflow_signed, /* complain_on_overflow */
1593 ppc64_elf_unhandled_reloc, /* special_function */
1594 "R_PPC64_TPREL16_HA", /* name */
1595 FALSE, /* partial_inplace */
1597 0xffff, /* dst_mask */
1598 FALSE), /* pcrel_offset */
1600 /* Like TPREL16_HI, but next higher group of 16 bits. */
1601 HOWTO (R_PPC64_TPREL16_HIGHER,
1602 32, /* rightshift */
1603 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 FALSE, /* pc_relative */
1607 complain_overflow_dont, /* complain_on_overflow */
1608 ppc64_elf_unhandled_reloc, /* special_function */
1609 "R_PPC64_TPREL16_HIGHER", /* name */
1610 FALSE, /* partial_inplace */
1612 0xffff, /* dst_mask */
1613 FALSE), /* pcrel_offset */
1615 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1616 HOWTO (R_PPC64_TPREL16_HIGHERA,
1617 32, /* rightshift */
1618 1, /* size (0 = byte, 1 = short, 2 = long) */
1620 FALSE, /* pc_relative */
1622 complain_overflow_dont, /* complain_on_overflow */
1623 ppc64_elf_unhandled_reloc, /* special_function */
1624 "R_PPC64_TPREL16_HIGHERA", /* name */
1625 FALSE, /* partial_inplace */
1627 0xffff, /* dst_mask */
1628 FALSE), /* pcrel_offset */
1630 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1631 HOWTO (R_PPC64_TPREL16_HIGHEST,
1632 48, /* rightshift */
1633 1, /* size (0 = byte, 1 = short, 2 = long) */
1635 FALSE, /* pc_relative */
1637 complain_overflow_dont, /* complain_on_overflow */
1638 ppc64_elf_unhandled_reloc, /* special_function */
1639 "R_PPC64_TPREL16_HIGHEST", /* name */
1640 FALSE, /* partial_inplace */
1642 0xffff, /* dst_mask */
1643 FALSE), /* pcrel_offset */
1645 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1646 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1647 48, /* rightshift */
1648 1, /* size (0 = byte, 1 = short, 2 = long) */
1650 FALSE, /* pc_relative */
1652 complain_overflow_dont, /* complain_on_overflow */
1653 ppc64_elf_unhandled_reloc, /* special_function */
1654 "R_PPC64_TPREL16_HIGHESTA", /* name */
1655 FALSE, /* partial_inplace */
1657 0xffff, /* dst_mask */
1658 FALSE), /* pcrel_offset */
1660 /* Like TPREL16, but for insns with a DS field. */
1661 HOWTO (R_PPC64_TPREL16_DS,
1663 1, /* size (0 = byte, 1 = short, 2 = long) */
1665 FALSE, /* pc_relative */
1667 complain_overflow_signed, /* complain_on_overflow */
1668 ppc64_elf_unhandled_reloc, /* special_function */
1669 "R_PPC64_TPREL16_DS", /* name */
1670 FALSE, /* partial_inplace */
1672 0xfffc, /* dst_mask */
1673 FALSE), /* pcrel_offset */
1675 /* Like TPREL16_DS, but no overflow. */
1676 HOWTO (R_PPC64_TPREL16_LO_DS,
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 FALSE, /* pc_relative */
1682 complain_overflow_dont, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc, /* special_function */
1684 "R_PPC64_TPREL16_LO_DS", /* name */
1685 FALSE, /* partial_inplace */
1687 0xfffc, /* dst_mask */
1688 FALSE), /* pcrel_offset */
1690 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1691 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1692 to the first entry relative to the TOC base (r2). */
1693 HOWTO (R_PPC64_GOT_TLSGD16,
1695 1, /* size (0 = byte, 1 = short, 2 = long) */
1697 FALSE, /* pc_relative */
1699 complain_overflow_signed, /* complain_on_overflow */
1700 ppc64_elf_unhandled_reloc, /* special_function */
1701 "R_PPC64_GOT_TLSGD16", /* name */
1702 FALSE, /* partial_inplace */
1704 0xffff, /* dst_mask */
1705 FALSE), /* pcrel_offset */
1707 /* Like GOT_TLSGD16, but no overflow. */
1708 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1710 1, /* size (0 = byte, 1 = short, 2 = long) */
1712 FALSE, /* pc_relative */
1714 complain_overflow_dont, /* complain_on_overflow */
1715 ppc64_elf_unhandled_reloc, /* special_function */
1716 "R_PPC64_GOT_TLSGD16_LO", /* name */
1717 FALSE, /* partial_inplace */
1719 0xffff, /* dst_mask */
1720 FALSE), /* pcrel_offset */
1722 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1723 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1724 16, /* rightshift */
1725 1, /* size (0 = byte, 1 = short, 2 = long) */
1727 FALSE, /* pc_relative */
1729 complain_overflow_signed, /* complain_on_overflow */
1730 ppc64_elf_unhandled_reloc, /* special_function */
1731 "R_PPC64_GOT_TLSGD16_HI", /* name */
1732 FALSE, /* partial_inplace */
1734 0xffff, /* dst_mask */
1735 FALSE), /* pcrel_offset */
1737 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1738 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1739 16, /* rightshift */
1740 1, /* size (0 = byte, 1 = short, 2 = long) */
1742 FALSE, /* pc_relative */
1744 complain_overflow_signed, /* complain_on_overflow */
1745 ppc64_elf_unhandled_reloc, /* special_function */
1746 "R_PPC64_GOT_TLSGD16_HA", /* name */
1747 FALSE, /* partial_inplace */
1749 0xffff, /* dst_mask */
1750 FALSE), /* pcrel_offset */
1752 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1753 with values (sym+add)@dtpmod and zero, and computes the offset to the
1754 first entry relative to the TOC base (r2). */
1755 HOWTO (R_PPC64_GOT_TLSLD16,
1757 1, /* size (0 = byte, 1 = short, 2 = long) */
1759 FALSE, /* pc_relative */
1761 complain_overflow_signed, /* complain_on_overflow */
1762 ppc64_elf_unhandled_reloc, /* special_function */
1763 "R_PPC64_GOT_TLSLD16", /* name */
1764 FALSE, /* partial_inplace */
1766 0xffff, /* dst_mask */
1767 FALSE), /* pcrel_offset */
1769 /* Like GOT_TLSLD16, but no overflow. */
1770 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1772 1, /* size (0 = byte, 1 = short, 2 = long) */
1774 FALSE, /* pc_relative */
1776 complain_overflow_dont, /* complain_on_overflow */
1777 ppc64_elf_unhandled_reloc, /* special_function */
1778 "R_PPC64_GOT_TLSLD16_LO", /* name */
1779 FALSE, /* partial_inplace */
1781 0xffff, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1784 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1785 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1786 16, /* rightshift */
1787 1, /* size (0 = byte, 1 = short, 2 = long) */
1789 FALSE, /* pc_relative */
1791 complain_overflow_signed, /* complain_on_overflow */
1792 ppc64_elf_unhandled_reloc, /* special_function */
1793 "R_PPC64_GOT_TLSLD16_HI", /* name */
1794 FALSE, /* partial_inplace */
1796 0xffff, /* dst_mask */
1797 FALSE), /* pcrel_offset */
1799 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1800 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1801 16, /* rightshift */
1802 1, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE, /* pc_relative */
1806 complain_overflow_signed, /* complain_on_overflow */
1807 ppc64_elf_unhandled_reloc, /* special_function */
1808 "R_PPC64_GOT_TLSLD16_HA", /* name */
1809 FALSE, /* partial_inplace */
1811 0xffff, /* dst_mask */
1812 FALSE), /* pcrel_offset */
1814 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1815 the offset to the entry relative to the TOC base (r2). */
1816 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1818 1, /* size (0 = byte, 1 = short, 2 = long) */
1820 FALSE, /* pc_relative */
1822 complain_overflow_signed, /* complain_on_overflow */
1823 ppc64_elf_unhandled_reloc, /* special_function */
1824 "R_PPC64_GOT_DTPREL16_DS", /* name */
1825 FALSE, /* partial_inplace */
1827 0xfffc, /* dst_mask */
1828 FALSE), /* pcrel_offset */
1830 /* Like GOT_DTPREL16_DS, but no overflow. */
1831 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1833 1, /* size (0 = byte, 1 = short, 2 = long) */
1835 FALSE, /* pc_relative */
1837 complain_overflow_dont, /* complain_on_overflow */
1838 ppc64_elf_unhandled_reloc, /* special_function */
1839 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1840 FALSE, /* partial_inplace */
1842 0xfffc, /* dst_mask */
1843 FALSE), /* pcrel_offset */
1845 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1846 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1847 16, /* rightshift */
1848 1, /* size (0 = byte, 1 = short, 2 = long) */
1850 FALSE, /* pc_relative */
1852 complain_overflow_signed, /* complain_on_overflow */
1853 ppc64_elf_unhandled_reloc, /* special_function */
1854 "R_PPC64_GOT_DTPREL16_HI", /* name */
1855 FALSE, /* partial_inplace */
1857 0xffff, /* dst_mask */
1858 FALSE), /* pcrel_offset */
1860 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1861 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1862 16, /* rightshift */
1863 1, /* size (0 = byte, 1 = short, 2 = long) */
1865 FALSE, /* pc_relative */
1867 complain_overflow_signed, /* complain_on_overflow */
1868 ppc64_elf_unhandled_reloc, /* special_function */
1869 "R_PPC64_GOT_DTPREL16_HA", /* name */
1870 FALSE, /* partial_inplace */
1872 0xffff, /* dst_mask */
1873 FALSE), /* pcrel_offset */
1875 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1876 offset to the entry relative to the TOC base (r2). */
1877 HOWTO (R_PPC64_GOT_TPREL16_DS,
1879 1, /* size (0 = byte, 1 = short, 2 = long) */
1881 FALSE, /* pc_relative */
1883 complain_overflow_signed, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc, /* special_function */
1885 "R_PPC64_GOT_TPREL16_DS", /* name */
1886 FALSE, /* partial_inplace */
1888 0xfffc, /* dst_mask */
1889 FALSE), /* pcrel_offset */
1891 /* Like GOT_TPREL16_DS, but no overflow. */
1892 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1894 1, /* size (0 = byte, 1 = short, 2 = long) */
1896 FALSE, /* pc_relative */
1898 complain_overflow_dont, /* complain_on_overflow */
1899 ppc64_elf_unhandled_reloc, /* special_function */
1900 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1901 FALSE, /* partial_inplace */
1903 0xfffc, /* dst_mask */
1904 FALSE), /* pcrel_offset */
1906 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1907 HOWTO (R_PPC64_GOT_TPREL16_HI,
1908 16, /* rightshift */
1909 1, /* size (0 = byte, 1 = short, 2 = long) */
1911 FALSE, /* pc_relative */
1913 complain_overflow_signed, /* complain_on_overflow */
1914 ppc64_elf_unhandled_reloc, /* special_function */
1915 "R_PPC64_GOT_TPREL16_HI", /* name */
1916 FALSE, /* partial_inplace */
1918 0xffff, /* dst_mask */
1919 FALSE), /* pcrel_offset */
1921 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1922 HOWTO (R_PPC64_GOT_TPREL16_HA,
1923 16, /* rightshift */
1924 1, /* size (0 = byte, 1 = short, 2 = long) */
1926 FALSE, /* pc_relative */
1928 complain_overflow_signed, /* complain_on_overflow */
1929 ppc64_elf_unhandled_reloc, /* special_function */
1930 "R_PPC64_GOT_TPREL16_HA", /* name */
1931 FALSE, /* partial_inplace */
1933 0xffff, /* dst_mask */
1934 FALSE), /* pcrel_offset */
1936 HOWTO (R_PPC64_JMP_IREL, /* type */
1938 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1940 FALSE, /* pc_relative */
1942 complain_overflow_dont, /* complain_on_overflow */
1943 ppc64_elf_unhandled_reloc, /* special_function */
1944 "R_PPC64_JMP_IREL", /* name */
1945 FALSE, /* partial_inplace */
1948 FALSE), /* pcrel_offset */
1950 HOWTO (R_PPC64_IRELATIVE, /* type */
1952 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1954 FALSE, /* pc_relative */
1956 complain_overflow_dont, /* complain_on_overflow */
1957 bfd_elf_generic_reloc, /* special_function */
1958 "R_PPC64_IRELATIVE", /* name */
1959 FALSE, /* partial_inplace */
1961 ONES (64), /* dst_mask */
1962 FALSE), /* pcrel_offset */
1964 /* A 16 bit relative relocation. */
1965 HOWTO (R_PPC64_REL16, /* type */
1967 1, /* size (0 = byte, 1 = short, 2 = long) */
1969 TRUE, /* pc_relative */
1971 complain_overflow_signed, /* complain_on_overflow */
1972 bfd_elf_generic_reloc, /* special_function */
1973 "R_PPC64_REL16", /* name */
1974 FALSE, /* partial_inplace */
1976 0xffff, /* dst_mask */
1977 TRUE), /* pcrel_offset */
1979 /* A 16 bit relative relocation without overflow. */
1980 HOWTO (R_PPC64_REL16_LO, /* type */
1982 1, /* size (0 = byte, 1 = short, 2 = long) */
1984 TRUE, /* pc_relative */
1986 complain_overflow_dont,/* complain_on_overflow */
1987 bfd_elf_generic_reloc, /* special_function */
1988 "R_PPC64_REL16_LO", /* name */
1989 FALSE, /* partial_inplace */
1991 0xffff, /* dst_mask */
1992 TRUE), /* pcrel_offset */
1994 /* The high order 16 bits of a relative address. */
1995 HOWTO (R_PPC64_REL16_HI, /* type */
1996 16, /* rightshift */
1997 1, /* size (0 = byte, 1 = short, 2 = long) */
1999 TRUE, /* pc_relative */
2001 complain_overflow_signed, /* complain_on_overflow */
2002 bfd_elf_generic_reloc, /* special_function */
2003 "R_PPC64_REL16_HI", /* name */
2004 FALSE, /* partial_inplace */
2006 0xffff, /* dst_mask */
2007 TRUE), /* pcrel_offset */
2009 /* The high order 16 bits of a relative address, plus 1 if the contents of
2010 the low 16 bits, treated as a signed number, is negative. */
2011 HOWTO (R_PPC64_REL16_HA, /* type */
2012 16, /* rightshift */
2013 1, /* size (0 = byte, 1 = short, 2 = long) */
2015 TRUE, /* pc_relative */
2017 complain_overflow_signed, /* complain_on_overflow */
2018 ppc64_elf_ha_reloc, /* special_function */
2019 "R_PPC64_REL16_HA", /* name */
2020 FALSE, /* partial_inplace */
2022 0xffff, /* dst_mask */
2023 TRUE), /* pcrel_offset */
2025 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2026 HOWTO (R_PPC64_REL16DX_HA, /* type */
2027 16, /* rightshift */
2028 2, /* size (0 = byte, 1 = short, 2 = long) */
2030 TRUE, /* pc_relative */
2032 complain_overflow_signed, /* complain_on_overflow */
2033 ppc64_elf_ha_reloc, /* special_function */
2034 "R_PPC64_REL16DX_HA", /* name */
2035 FALSE, /* partial_inplace */
2037 0x1fffc1, /* dst_mask */
2038 TRUE), /* pcrel_offset */
2040 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2041 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2042 16, /* rightshift */
2043 1, /* size (0 = byte, 1 = short, 2 = long) */
2045 FALSE, /* pc_relative */
2047 complain_overflow_dont, /* complain_on_overflow */
2048 bfd_elf_generic_reloc, /* special_function */
2049 "R_PPC64_ADDR16_HIGH", /* name */
2050 FALSE, /* partial_inplace */
2052 0xffff, /* dst_mask */
2053 FALSE), /* pcrel_offset */
2055 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2056 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2057 16, /* rightshift */
2058 1, /* size (0 = byte, 1 = short, 2 = long) */
2060 FALSE, /* pc_relative */
2062 complain_overflow_dont, /* complain_on_overflow */
2063 ppc64_elf_ha_reloc, /* special_function */
2064 "R_PPC64_ADDR16_HIGHA", /* name */
2065 FALSE, /* partial_inplace */
2067 0xffff, /* dst_mask */
2068 FALSE), /* pcrel_offset */
2070 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2071 HOWTO (R_PPC64_DTPREL16_HIGH,
2072 16, /* rightshift */
2073 1, /* size (0 = byte, 1 = short, 2 = long) */
2075 FALSE, /* pc_relative */
2077 complain_overflow_dont, /* complain_on_overflow */
2078 ppc64_elf_unhandled_reloc, /* special_function */
2079 "R_PPC64_DTPREL16_HIGH", /* name */
2080 FALSE, /* partial_inplace */
2082 0xffff, /* dst_mask */
2083 FALSE), /* pcrel_offset */
2085 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2086 HOWTO (R_PPC64_DTPREL16_HIGHA,
2087 16, /* rightshift */
2088 1, /* size (0 = byte, 1 = short, 2 = long) */
2090 FALSE, /* pc_relative */
2092 complain_overflow_dont, /* complain_on_overflow */
2093 ppc64_elf_unhandled_reloc, /* special_function */
2094 "R_PPC64_DTPREL16_HIGHA", /* name */
2095 FALSE, /* partial_inplace */
2097 0xffff, /* dst_mask */
2098 FALSE), /* pcrel_offset */
2100 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2101 HOWTO (R_PPC64_TPREL16_HIGH,
2102 16, /* rightshift */
2103 1, /* size (0 = byte, 1 = short, 2 = long) */
2105 FALSE, /* pc_relative */
2107 complain_overflow_dont, /* complain_on_overflow */
2108 ppc64_elf_unhandled_reloc, /* special_function */
2109 "R_PPC64_TPREL16_HIGH", /* name */
2110 FALSE, /* partial_inplace */
2112 0xffff, /* dst_mask */
2113 FALSE), /* pcrel_offset */
2115 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2116 HOWTO (R_PPC64_TPREL16_HIGHA,
2117 16, /* rightshift */
2118 1, /* size (0 = byte, 1 = short, 2 = long) */
2120 FALSE, /* pc_relative */
2122 complain_overflow_dont, /* complain_on_overflow */
2123 ppc64_elf_unhandled_reloc, /* special_function */
2124 "R_PPC64_TPREL16_HIGHA", /* name */
2125 FALSE, /* partial_inplace */
2127 0xffff, /* dst_mask */
2128 FALSE), /* pcrel_offset */
2130 /* Like ADDR64, but use local entry point of function. */
2131 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2133 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2135 FALSE, /* pc_relative */
2137 complain_overflow_dont, /* complain_on_overflow */
2138 bfd_elf_generic_reloc, /* special_function */
2139 "R_PPC64_ADDR64_LOCAL", /* name */
2140 FALSE, /* partial_inplace */
2142 ONES (64), /* dst_mask */
2143 FALSE), /* pcrel_offset */
2145 /* GNU extension to record C++ vtable hierarchy. */
2146 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2148 0, /* size (0 = byte, 1 = short, 2 = long) */
2150 FALSE, /* pc_relative */
2152 complain_overflow_dont, /* complain_on_overflow */
2153 NULL, /* special_function */
2154 "R_PPC64_GNU_VTINHERIT", /* name */
2155 FALSE, /* partial_inplace */
2158 FALSE), /* pcrel_offset */
2160 /* GNU extension to record C++ vtable member usage. */
2161 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2163 0, /* size (0 = byte, 1 = short, 2 = long) */
2165 FALSE, /* pc_relative */
2167 complain_overflow_dont, /* complain_on_overflow */
2168 NULL, /* special_function */
2169 "R_PPC64_GNU_VTENTRY", /* name */
2170 FALSE, /* partial_inplace */
2173 FALSE), /* pcrel_offset */
2177 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2181 ppc_howto_init (void)
2183 unsigned int i, type;
2185 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2187 type = ppc64_elf_howto_raw[i].type;
2188 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2189 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2193 static reloc_howto_type *
2194 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2195 bfd_reloc_code_real_type code)
2197 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2199 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2200 /* Initialize howto table if needed. */
2208 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2210 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2212 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2214 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2216 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2218 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2220 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2222 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2224 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2226 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2228 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2230 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2232 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2234 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2236 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2238 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2240 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2242 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2244 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2246 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2248 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2250 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2252 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2254 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2256 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2258 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2260 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2262 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2264 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2266 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2268 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2270 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2272 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2274 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2276 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2278 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2280 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2282 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2284 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2286 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2288 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2290 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2292 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2294 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2296 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2298 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2300 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2302 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2304 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2306 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2308 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2310 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2312 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2314 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2316 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2318 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2320 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2322 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2324 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2326 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2328 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2330 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2332 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2334 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2336 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2338 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2340 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2342 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2344 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2346 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2348 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2350 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2352 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2354 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2356 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2358 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2360 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2362 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2364 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2366 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2368 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2370 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2372 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2374 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2376 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2378 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2380 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2382 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2384 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2386 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2388 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2390 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2392 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2394 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2396 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2398 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2400 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2402 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2404 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2406 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2408 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2410 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2412 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2414 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2416 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2418 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2420 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2422 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2424 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2426 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2428 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2430 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2432 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2434 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2436 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2440 return ppc64_elf_howto_table[r];
2443 static reloc_howto_type *
2444 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2449 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2450 if (ppc64_elf_howto_raw[i].name != NULL
2451 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2452 return &ppc64_elf_howto_raw[i];
2457 /* Set the howto pointer for a PowerPC ELF reloc. */
2460 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2461 Elf_Internal_Rela *dst)
2465 /* Initialize howto table if needed. */
2466 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2469 type = ELF64_R_TYPE (dst->r_info);
2470 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2472 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2474 type = R_PPC64_NONE;
2476 cache_ptr->howto = ppc64_elf_howto_table[type];
2479 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2481 static bfd_reloc_status_type
2482 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2483 void *data, asection *input_section,
2484 bfd *output_bfd, char **error_message)
2486 enum elf_ppc64_reloc_type r_type;
2488 bfd_size_type octets;
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2494 if (output_bfd != NULL)
2495 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2496 input_section, output_bfd, error_message);
2498 /* Adjust the addend for sign extension of the low 16 bits.
2499 We won't actually be using the low 16 bits, so trashing them
2501 reloc_entry->addend += 0x8000;
2502 r_type = reloc_entry->howto->type;
2503 if (r_type != R_PPC64_REL16DX_HA)
2504 return bfd_reloc_continue;
2507 if (!bfd_is_com_section (symbol->section))
2508 value = symbol->value;
2509 value += (reloc_entry->addend
2510 + symbol->section->output_offset
2511 + symbol->section->output_section->vma);
2512 value -= (reloc_entry->address
2513 + input_section->output_offset
2514 + input_section->output_section->vma);
2515 value = (bfd_signed_vma) value >> 16;
2517 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2518 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2520 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2521 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2522 if (value + 0x8000 > 0xffff)
2523 return bfd_reloc_overflow;
2524 return bfd_reloc_ok;
2527 static bfd_reloc_status_type
2528 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2529 void *data, asection *input_section,
2530 bfd *output_bfd, char **error_message)
2532 if (output_bfd != NULL)
2533 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2534 input_section, output_bfd, error_message);
2536 if (strcmp (symbol->section->name, ".opd") == 0
2537 && (symbol->section->owner->flags & DYNAMIC) == 0)
2539 bfd_vma dest = opd_entry_value (symbol->section,
2540 symbol->value + reloc_entry->addend,
2542 if (dest != (bfd_vma) -1)
2543 reloc_entry->addend = dest - (symbol->value
2544 + symbol->section->output_section->vma
2545 + symbol->section->output_offset);
2549 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2551 if (symbol->section->owner != abfd
2552 && abiversion (symbol->section->owner) >= 2)
2556 for (i = 0; i < symbol->section->owner->symcount; ++i)
2558 asymbol *symdef = symbol->section->owner->outsymbols[i];
2560 if (strcmp (symdef->name, symbol->name) == 0)
2562 elfsym = (elf_symbol_type *) symdef;
2568 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2570 return bfd_reloc_continue;
2573 static bfd_reloc_status_type
2574 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2575 void *data, asection *input_section,
2576 bfd *output_bfd, char **error_message)
2579 enum elf_ppc64_reloc_type r_type;
2580 bfd_size_type octets;
2581 /* Assume 'at' branch hints. */
2582 bfd_boolean is_isa_v2 = TRUE;
2584 /* If this is a relocatable link (output_bfd test tells us), just
2585 call the generic function. Any adjustment will be done at final
2587 if (output_bfd != NULL)
2588 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
2591 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2592 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2593 insn &= ~(0x01 << 21);
2594 r_type = reloc_entry->howto->type;
2595 if (r_type == R_PPC64_ADDR14_BRTAKEN
2596 || r_type == R_PPC64_REL14_BRTAKEN)
2597 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2601 /* Set 'a' bit. This is 0b00010 in BO field for branch
2602 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2603 for branch on CTR insns (BO == 1a00t or 1a01t). */
2604 if ((insn & (0x14 << 21)) == (0x04 << 21))
2606 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2616 if (!bfd_is_com_section (symbol->section))
2617 target = symbol->value;
2618 target += symbol->section->output_section->vma;
2619 target += symbol->section->output_offset;
2620 target += reloc_entry->addend;
2622 from = (reloc_entry->address
2623 + input_section->output_offset
2624 + input_section->output_section->vma);
2626 /* Invert 'y' bit if not the default. */
2627 if ((bfd_signed_vma) (target - from) < 0)
2630 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2632 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2633 input_section, output_bfd, error_message);
2636 static bfd_reloc_status_type
2637 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2638 void *data, asection *input_section,
2639 bfd *output_bfd, char **error_message)
2641 /* If this is a relocatable link (output_bfd test tells us), just
2642 call the generic function. Any adjustment will be done at final
2644 if (output_bfd != NULL)
2645 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2646 input_section, output_bfd, error_message);
2648 /* Subtract the symbol section base address. */
2649 reloc_entry->addend -= symbol->section->output_section->vma;
2650 return bfd_reloc_continue;
2653 static bfd_reloc_status_type
2654 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2655 void *data, asection *input_section,
2656 bfd *output_bfd, char **error_message)
2658 /* If this is a relocatable link (output_bfd test tells us), just
2659 call the generic function. Any adjustment will be done at final
2661 if (output_bfd != NULL)
2662 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2663 input_section, output_bfd, error_message);
2665 /* Subtract the symbol section base address. */
2666 reloc_entry->addend -= symbol->section->output_section->vma;
2668 /* Adjust the addend for sign extension of the low 16 bits. */
2669 reloc_entry->addend += 0x8000;
2670 return bfd_reloc_continue;
2673 static bfd_reloc_status_type
2674 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2675 void *data, asection *input_section,
2676 bfd *output_bfd, char **error_message)
2680 /* If this is a relocatable link (output_bfd test tells us), just
2681 call the generic function. Any adjustment will be done at final
2683 if (output_bfd != NULL)
2684 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2685 input_section, output_bfd, error_message);
2687 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2689 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2691 /* Subtract the TOC base address. */
2692 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2693 return bfd_reloc_continue;
2696 static bfd_reloc_status_type
2697 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2698 void *data, asection *input_section,
2699 bfd *output_bfd, char **error_message)
2703 /* If this is a relocatable link (output_bfd test tells us), just
2704 call the generic function. Any adjustment will be done at final
2706 if (output_bfd != NULL)
2707 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2708 input_section, output_bfd, error_message);
2710 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2712 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2714 /* Subtract the TOC base address. */
2715 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2717 /* Adjust the addend for sign extension of the low 16 bits. */
2718 reloc_entry->addend += 0x8000;
2719 return bfd_reloc_continue;
2722 static bfd_reloc_status_type
2723 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2724 void *data, asection *input_section,
2725 bfd *output_bfd, char **error_message)
2728 bfd_size_type octets;
2730 /* If this is a relocatable link (output_bfd test tells us), just
2731 call the generic function. Any adjustment will be done at final
2733 if (output_bfd != NULL)
2734 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2735 input_section, output_bfd, error_message);
2737 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2739 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2741 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2742 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2743 return bfd_reloc_ok;
2746 static bfd_reloc_status_type
2747 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2748 void *data, asection *input_section,
2749 bfd *output_bfd, char **error_message)
2751 /* If this is a relocatable link (output_bfd test tells us), just
2752 call the generic function. Any adjustment will be done at final
2754 if (output_bfd != NULL)
2755 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2756 input_section, output_bfd, error_message);
2758 if (error_message != NULL)
2760 static char buf[60];
2761 sprintf (buf, "generic linker can't handle %s",
2762 reloc_entry->howto->name);
2763 *error_message = buf;
2765 return bfd_reloc_dangerous;
2768 /* Track GOT entries needed for a given symbol. We might need more
2769 than one got entry per symbol. */
2772 struct got_entry *next;
2774 /* The symbol addend that we'll be placing in the GOT. */
2777 /* Unlike other ELF targets, we use separate GOT entries for the same
2778 symbol referenced from different input files. This is to support
2779 automatic multiple TOC/GOT sections, where the TOC base can vary
2780 from one input file to another. After partitioning into TOC groups
2781 we merge entries within the group.
2783 Point to the BFD owning this GOT entry. */
2786 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2787 TLS_TPREL or TLS_DTPREL for tls entries. */
2788 unsigned char tls_type;
2790 /* Non-zero if got.ent points to real entry. */
2791 unsigned char is_indirect;
2793 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2796 bfd_signed_vma refcount;
2798 struct got_entry *ent;
2802 /* The same for PLT. */
2805 struct plt_entry *next;
2811 bfd_signed_vma refcount;
2816 struct ppc64_elf_obj_tdata
2818 struct elf_obj_tdata elf;
2820 /* Shortcuts to dynamic linker sections. */
2824 /* Used during garbage collection. We attach global symbols defined
2825 on removed .opd entries to this section so that the sym is removed. */
2826 asection *deleted_section;
2828 /* TLS local dynamic got entry handling. Support for multiple GOT
2829 sections means we potentially need one of these for each input bfd. */
2830 struct got_entry tlsld_got;
2833 /* A copy of relocs before they are modified for --emit-relocs. */
2834 Elf_Internal_Rela *relocs;
2836 /* Section contents. */
2840 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2841 the reloc to be in the range -32768 to 32767. */
2842 unsigned int has_small_toc_reloc : 1;
2844 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2845 instruction not one we handle. */
2846 unsigned int unexpected_toc_insn : 1;
2849 #define ppc64_elf_tdata(bfd) \
2850 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2852 #define ppc64_tlsld_got(bfd) \
2853 (&ppc64_elf_tdata (bfd)->tlsld_got)
2855 #define is_ppc64_elf(bfd) \
2856 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2857 && elf_object_id (bfd) == PPC64_ELF_DATA)
2859 /* Override the generic function because we store some extras. */
2862 ppc64_elf_mkobject (bfd *abfd)
2864 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2868 /* Fix bad default arch selected for a 64 bit input bfd when the
2869 default is 32 bit. */
2872 ppc64_elf_object_p (bfd *abfd)
2874 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2876 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2878 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2880 /* Relies on arch after 32 bit default being 64 bit default. */
2881 abfd->arch_info = abfd->arch_info->next;
2882 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2888 /* Support for core dump NOTE sections. */
2891 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2893 size_t offset, size;
2895 if (note->descsz != 504)
2899 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2902 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2908 /* Make a ".reg/999" section. */
2909 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2910 size, note->descpos + offset);
2914 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2916 if (note->descsz != 136)
2919 elf_tdata (abfd)->core->pid
2920 = bfd_get_32 (abfd, note->descdata + 24);
2921 elf_tdata (abfd)->core->program
2922 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2923 elf_tdata (abfd)->core->command
2924 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2930 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2943 va_start (ap, note_type);
2944 memset (data, 0, sizeof (data));
2945 strncpy (data + 40, va_arg (ap, const char *), 16);
2946 strncpy (data + 56, va_arg (ap, const char *), 80);
2948 return elfcore_write_note (abfd, buf, bufsiz,
2949 "CORE", note_type, data, sizeof (data));
2960 va_start (ap, note_type);
2961 memset (data, 0, 112);
2962 pid = va_arg (ap, long);
2963 bfd_put_32 (abfd, pid, data + 32);
2964 cursig = va_arg (ap, int);
2965 bfd_put_16 (abfd, cursig, data + 12);
2966 greg = va_arg (ap, const void *);
2967 memcpy (data + 112, greg, 384);
2968 memset (data + 496, 0, 8);
2970 return elfcore_write_note (abfd, buf, bufsiz,
2971 "CORE", note_type, data, sizeof (data));
2976 /* Add extra PPC sections. */
2978 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2980 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2981 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2982 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2983 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2984 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2985 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2986 { NULL, 0, 0, 0, 0 }
2989 enum _ppc64_sec_type {
2995 struct _ppc64_elf_section_data
2997 struct bfd_elf_section_data elf;
3001 /* An array with one entry for each opd function descriptor,
3002 and some spares since opd entries may be either 16 or 24 bytes. */
3003 #define OPD_NDX(OFF) ((OFF) >> 4)
3004 struct _opd_sec_data
3006 /* Points to the function code section for local opd entries. */
3007 asection **func_sec;
3009 /* After editing .opd, adjust references to opd local syms. */
3013 /* An array for toc sections, indexed by offset/8. */
3014 struct _toc_sec_data
3016 /* Specifies the relocation symbol index used at a given toc offset. */
3019 /* And the relocation addend. */
3024 enum _ppc64_sec_type sec_type:2;
3026 /* Flag set when small branches are detected. Used to
3027 select suitable defaults for the stub group size. */
3028 unsigned int has_14bit_branch:1;
3031 #define ppc64_elf_section_data(sec) \
3032 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3035 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3037 if (!sec->used_by_bfd)
3039 struct _ppc64_elf_section_data *sdata;
3040 bfd_size_type amt = sizeof (*sdata);
3042 sdata = bfd_zalloc (abfd, amt);
3045 sec->used_by_bfd = sdata;
3048 return _bfd_elf_new_section_hook (abfd, sec);
3051 static struct _opd_sec_data *
3052 get_opd_info (asection * sec)
3055 && ppc64_elf_section_data (sec) != NULL
3056 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3057 return &ppc64_elf_section_data (sec)->u.opd;
3061 /* Parameters for the qsort hook. */
3062 static bfd_boolean synthetic_relocatable;
3064 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3067 compare_symbols (const void *ap, const void *bp)
3069 const asymbol *a = * (const asymbol **) ap;
3070 const asymbol *b = * (const asymbol **) bp;
3072 /* Section symbols first. */
3073 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3075 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3078 /* then .opd symbols. */
3079 if (strcmp (a->section->name, ".opd") == 0
3080 && strcmp (b->section->name, ".opd") != 0)
3082 if (strcmp (a->section->name, ".opd") != 0
3083 && strcmp (b->section->name, ".opd") == 0)
3086 /* then other code symbols. */
3087 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3088 == (SEC_CODE | SEC_ALLOC)
3089 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3090 != (SEC_CODE | SEC_ALLOC))
3093 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3094 != (SEC_CODE | SEC_ALLOC)
3095 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3096 == (SEC_CODE | SEC_ALLOC))
3099 if (synthetic_relocatable)
3101 if (a->section->id < b->section->id)
3104 if (a->section->id > b->section->id)
3108 if (a->value + a->section->vma < b->value + b->section->vma)
3111 if (a->value + a->section->vma > b->value + b->section->vma)
3114 /* For syms with the same value, prefer strong dynamic global function
3115 syms over other syms. */
3116 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3119 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3122 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3125 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3128 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3131 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3134 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3137 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3143 /* Search SYMS for a symbol of the given VALUE. */
3146 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3150 if (id == (unsigned) -1)
3154 mid = (lo + hi) >> 1;
3155 if (syms[mid]->value + syms[mid]->section->vma < value)
3157 else if (syms[mid]->value + syms[mid]->section->vma > value)
3167 mid = (lo + hi) >> 1;
3168 if (syms[mid]->section->id < id)
3170 else if (syms[mid]->section->id > id)
3172 else if (syms[mid]->value < value)
3174 else if (syms[mid]->value > value)
3184 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3186 bfd_vma vma = *(bfd_vma *) ptr;
3187 return ((section->flags & SEC_ALLOC) != 0
3188 && section->vma <= vma
3189 && vma < section->vma + section->size);
3192 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3193 entry syms. Also generate @plt symbols for the glink branch table.
3194 Returns count of synthetic symbols in RET or -1 on error. */
3197 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3198 long static_count, asymbol **static_syms,
3199 long dyn_count, asymbol **dyn_syms,
3206 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3207 asection *opd = NULL;
3208 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3210 int abi = abiversion (abfd);
3216 opd = bfd_get_section_by_name (abfd, ".opd");
3217 if (opd == NULL && abi == 1)
3221 symcount = static_count;
3223 symcount += dyn_count;
3227 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3231 if (!relocatable && static_count != 0 && dyn_count != 0)
3233 /* Use both symbol tables. */
3234 memcpy (syms, static_syms, static_count * sizeof (*syms));
3235 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3237 else if (!relocatable && static_count == 0)
3238 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3240 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3242 synthetic_relocatable = relocatable;
3243 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3245 if (!relocatable && symcount > 1)
3248 /* Trim duplicate syms, since we may have merged the normal and
3249 dynamic symbols. Actually, we only care about syms that have
3250 different values, so trim any with the same value. */
3251 for (i = 1, j = 1; i < symcount; ++i)
3252 if (syms[i - 1]->value + syms[i - 1]->section->vma
3253 != syms[i]->value + syms[i]->section->vma)
3254 syms[j++] = syms[i];
3259 if (strcmp (syms[i]->section->name, ".opd") == 0)
3263 for (; i < symcount; ++i)
3264 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3265 != (SEC_CODE | SEC_ALLOC))
3266 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3270 for (; i < symcount; ++i)
3271 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3275 for (; i < symcount; ++i)
3276 if (strcmp (syms[i]->section->name, ".opd") != 0)
3280 for (; i < symcount; ++i)
3281 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3282 != (SEC_CODE | SEC_ALLOC))
3290 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3295 if (opdsymend == secsymend)
3298 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3299 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3303 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3310 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3314 while (r < opd->relocation + relcount
3315 && r->address < syms[i]->value + opd->vma)
3318 if (r == opd->relocation + relcount)
3321 if (r->address != syms[i]->value + opd->vma)
3324 if (r->howto->type != R_PPC64_ADDR64)
3327 sym = *r->sym_ptr_ptr;
3328 if (!sym_exists_at (syms, opdsymend, symcount,
3329 sym->section->id, sym->value + r->addend))
3332 size += sizeof (asymbol);
3333 size += strlen (syms[i]->name) + 2;
3339 s = *ret = bfd_malloc (size);
3346 names = (char *) (s + count);
3348 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3352 while (r < opd->relocation + relcount
3353 && r->address < syms[i]->value + opd->vma)
3356 if (r == opd->relocation + relcount)
3359 if (r->address != syms[i]->value + opd->vma)
3362 if (r->howto->type != R_PPC64_ADDR64)
3365 sym = *r->sym_ptr_ptr;
3366 if (!sym_exists_at (syms, opdsymend, symcount,
3367 sym->section->id, sym->value + r->addend))
3372 s->flags |= BSF_SYNTHETIC;
3373 s->section = sym->section;
3374 s->value = sym->value + r->addend;
3377 len = strlen (syms[i]->name);
3378 memcpy (names, syms[i]->name, len + 1);
3380 /* Have udata.p point back to the original symbol this
3381 synthetic symbol was derived from. */
3382 s->udata.p = syms[i];
3389 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3390 bfd_byte *contents = NULL;
3393 bfd_vma glink_vma = 0, resolv_vma = 0;
3394 asection *dynamic, *glink = NULL, *relplt = NULL;
3397 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3399 free_contents_and_exit_err:
3401 free_contents_and_exit:
3408 for (i = secsymend; i < opdsymend; ++i)
3412 /* Ignore bogus symbols. */
3413 if (syms[i]->value > opd->size - 8)
3416 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3417 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3420 size += sizeof (asymbol);
3421 size += strlen (syms[i]->name) + 2;
3425 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3427 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3429 bfd_byte *dynbuf, *extdyn, *extdynend;
3431 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3433 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3434 goto free_contents_and_exit_err;
3436 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3437 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3440 extdynend = extdyn + dynamic->size;
3441 for (; extdyn < extdynend; extdyn += extdynsize)
3443 Elf_Internal_Dyn dyn;
3444 (*swap_dyn_in) (abfd, extdyn, &dyn);
3446 if (dyn.d_tag == DT_NULL)
3449 if (dyn.d_tag == DT_PPC64_GLINK)
3451 /* The first glink stub starts at offset 32; see
3452 comment in ppc64_elf_finish_dynamic_sections. */
3453 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3454 /* The .glink section usually does not survive the final
3455 link; search for the section (usually .text) where the
3456 glink stubs now reside. */
3457 glink = bfd_sections_find_if (abfd, section_covers_vma,
3468 /* Determine __glink trampoline by reading the relative branch
3469 from the first glink stub. */
3471 unsigned int off = 0;
3473 while (bfd_get_section_contents (abfd, glink, buf,
3474 glink_vma + off - glink->vma, 4))
3476 unsigned int insn = bfd_get_32 (abfd, buf);
3478 if ((insn & ~0x3fffffc) == 0)
3480 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3489 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3491 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3494 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3495 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3496 goto free_contents_and_exit_err;
3498 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3499 size += plt_count * sizeof (asymbol);
3501 p = relplt->relocation;
3502 for (i = 0; i < plt_count; i++, p++)
3504 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3506 size += sizeof ("+0x") - 1 + 16;
3512 goto free_contents_and_exit;
3513 s = *ret = bfd_malloc (size);
3515 goto free_contents_and_exit_err;
3517 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3519 for (i = secsymend; i < opdsymend; ++i)
3523 if (syms[i]->value > opd->size - 8)
3526 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3527 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3531 asection *sec = abfd->sections;
3538 long mid = (lo + hi) >> 1;
3539 if (syms[mid]->section->vma < ent)
3541 else if (syms[mid]->section->vma > ent)
3545 sec = syms[mid]->section;
3550 if (lo >= hi && lo > codesecsym)
3551 sec = syms[lo - 1]->section;
3553 for (; sec != NULL; sec = sec->next)
3557 /* SEC_LOAD may not be set if SEC is from a separate debug
3559 if ((sec->flags & SEC_ALLOC) == 0)
3561 if ((sec->flags & SEC_CODE) != 0)
3564 s->flags |= BSF_SYNTHETIC;
3565 s->value = ent - s->section->vma;
3568 len = strlen (syms[i]->name);
3569 memcpy (names, syms[i]->name, len + 1);
3571 /* Have udata.p point back to the original symbol this
3572 synthetic symbol was derived from. */
3573 s->udata.p = syms[i];
3579 if (glink != NULL && relplt != NULL)
3583 /* Add a symbol for the main glink trampoline. */
3584 memset (s, 0, sizeof *s);
3586 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3588 s->value = resolv_vma - glink->vma;
3590 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3591 names += sizeof ("__glink_PLTresolve");
3596 /* FIXME: It would be very much nicer to put sym@plt on the
3597 stub rather than on the glink branch table entry. The
3598 objdump disassembler would then use a sensible symbol
3599 name on plt calls. The difficulty in doing so is
3600 a) finding the stubs, and,
3601 b) matching stubs against plt entries, and,
3602 c) there can be multiple stubs for a given plt entry.
3604 Solving (a) could be done by code scanning, but older
3605 ppc64 binaries used different stubs to current code.
3606 (b) is the tricky one since you need to known the toc
3607 pointer for at least one function that uses a pic stub to
3608 be able to calculate the plt address referenced.
3609 (c) means gdb would need to set multiple breakpoints (or
3610 find the glink branch itself) when setting breakpoints
3611 for pending shared library loads. */
3612 p = relplt->relocation;
3613 for (i = 0; i < plt_count; i++, p++)
3617 *s = **p->sym_ptr_ptr;
3618 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3619 we are defining a symbol, ensure one of them is set. */
3620 if ((s->flags & BSF_LOCAL) == 0)
3621 s->flags |= BSF_GLOBAL;
3622 s->flags |= BSF_SYNTHETIC;
3624 s->value = glink_vma - glink->vma;
3627 len = strlen ((*p->sym_ptr_ptr)->name);
3628 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3632 memcpy (names, "+0x", sizeof ("+0x") - 1);
3633 names += sizeof ("+0x") - 1;
3634 bfd_sprintf_vma (abfd, names, p->addend);
3635 names += strlen (names);
3637 memcpy (names, "@plt", sizeof ("@plt"));
3638 names += sizeof ("@plt");
3658 /* The following functions are specific to the ELF linker, while
3659 functions above are used generally. Those named ppc64_elf_* are
3660 called by the main ELF linker code. They appear in this file more
3661 or less in the order in which they are called. eg.
3662 ppc64_elf_check_relocs is called early in the link process,
3663 ppc64_elf_finish_dynamic_sections is one of the last functions
3666 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3667 functions have both a function code symbol and a function descriptor
3668 symbol. A call to foo in a relocatable object file looks like:
3675 The function definition in another object file might be:
3679 . .quad .TOC.@tocbase
3685 When the linker resolves the call during a static link, the branch
3686 unsurprisingly just goes to .foo and the .opd information is unused.
3687 If the function definition is in a shared library, things are a little
3688 different: The call goes via a plt call stub, the opd information gets
3689 copied to the plt, and the linker patches the nop.
3697 . std 2,40(1) # in practice, the call stub
3698 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3699 . addi 11,11,Lfoo@toc@l # this is the general idea
3707 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3709 The "reloc ()" notation is supposed to indicate that the linker emits
3710 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3713 What are the difficulties here? Well, firstly, the relocations
3714 examined by the linker in check_relocs are against the function code
3715 sym .foo, while the dynamic relocation in the plt is emitted against
3716 the function descriptor symbol, foo. Somewhere along the line, we need
3717 to carefully copy dynamic link information from one symbol to the other.
3718 Secondly, the generic part of the elf linker will make .foo a dynamic
3719 symbol as is normal for most other backends. We need foo dynamic
3720 instead, at least for an application final link. However, when
3721 creating a shared library containing foo, we need to have both symbols
3722 dynamic so that references to .foo are satisfied during the early
3723 stages of linking. Otherwise the linker might decide to pull in a
3724 definition from some other object, eg. a static library.
3726 Update: As of August 2004, we support a new convention. Function
3727 calls may use the function descriptor symbol, ie. "bl foo". This
3728 behaves exactly as "bl .foo". */
3730 /* Of those relocs that might be copied as dynamic relocs, this function
3731 selects those that must be copied when linking a shared library,
3732 even when the symbol is local. */
3735 must_be_dyn_reloc (struct bfd_link_info *info,
3736 enum elf_ppc64_reloc_type r_type)
3748 case R_PPC64_TPREL16:
3749 case R_PPC64_TPREL16_LO:
3750 case R_PPC64_TPREL16_HI:
3751 case R_PPC64_TPREL16_HA:
3752 case R_PPC64_TPREL16_DS:
3753 case R_PPC64_TPREL16_LO_DS:
3754 case R_PPC64_TPREL16_HIGH:
3755 case R_PPC64_TPREL16_HIGHA:
3756 case R_PPC64_TPREL16_HIGHER:
3757 case R_PPC64_TPREL16_HIGHERA:
3758 case R_PPC64_TPREL16_HIGHEST:
3759 case R_PPC64_TPREL16_HIGHESTA:
3760 case R_PPC64_TPREL64:
3761 return !bfd_link_executable (info);
3765 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3766 copying dynamic variables from a shared lib into an app's dynbss
3767 section, and instead use a dynamic relocation to point into the
3768 shared lib. With code that gcc generates, it's vital that this be
3769 enabled; In the PowerPC64 ABI, the address of a function is actually
3770 the address of a function descriptor, which resides in the .opd
3771 section. gcc uses the descriptor directly rather than going via the
3772 GOT as some other ABI's do, which means that initialized function
3773 pointers must reference the descriptor. Thus, a function pointer
3774 initialized to the address of a function in a shared library will
3775 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3776 redefines the function descriptor symbol to point to the copy. This
3777 presents a problem as a plt entry for that function is also
3778 initialized from the function descriptor symbol and the copy reloc
3779 may not be initialized first. */
3780 #define ELIMINATE_COPY_RELOCS 1
3782 /* Section name for stubs is the associated section name plus this
3784 #define STUB_SUFFIX ".stub"
3787 ppc_stub_long_branch:
3788 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3789 destination, but a 24 bit branch in a stub section will reach.
3792 ppc_stub_plt_branch:
3793 Similar to the above, but a 24 bit branch in the stub section won't
3794 reach its destination.
3795 . addis %r11,%r2,xxx@toc@ha
3796 . ld %r12,xxx@toc@l(%r11)
3801 Used to call a function in a shared library. If it so happens that
3802 the plt entry referenced crosses a 64k boundary, then an extra
3803 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3805 . addis %r11,%r2,xxx@toc@ha
3806 . ld %r12,xxx+0@toc@l(%r11)
3808 . ld %r2,xxx+8@toc@l(%r11)
3809 . ld %r11,xxx+16@toc@l(%r11)
3812 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3813 code to adjust the value and save r2 to support multiple toc sections.
3814 A ppc_stub_long_branch with an r2 offset looks like:
3816 . addis %r2,%r2,off@ha
3817 . addi %r2,%r2,off@l
3820 A ppc_stub_plt_branch with an r2 offset looks like:
3822 . addis %r11,%r2,xxx@toc@ha
3823 . ld %r12,xxx@toc@l(%r11)
3824 . addis %r2,%r2,off@ha
3825 . addi %r2,%r2,off@l
3829 In cases where the "addis" instruction would add zero, the "addis" is
3830 omitted and following instructions modified slightly in some cases.
3833 enum ppc_stub_type {
3835 ppc_stub_long_branch,
3836 ppc_stub_long_branch_r2off,
3837 ppc_stub_plt_branch,
3838 ppc_stub_plt_branch_r2off,
3840 ppc_stub_plt_call_r2save,
3841 ppc_stub_global_entry,
3845 /* Information on stub grouping. */
3848 /* The stub section. */
3850 /* This is the section to which stubs in the group will be attached. */
3853 struct map_stub *next;
3854 /* Whether to emit a copy of register save/restore functions in this
3859 struct ppc_stub_hash_entry {
3861 /* Base hash table entry structure. */
3862 struct bfd_hash_entry root;
3864 enum ppc_stub_type stub_type;
3866 /* Group information. */
3867 struct map_stub *group;
3869 /* Offset within stub_sec of the beginning of this stub. */
3870 bfd_vma stub_offset;
3872 /* Given the symbol's value and its section we can determine its final
3873 value when building the stubs (so the stub knows where to jump. */
3874 bfd_vma target_value;
3875 asection *target_section;
3877 /* The symbol table entry, if any, that this was derived from. */
3878 struct ppc_link_hash_entry *h;
3879 struct plt_entry *plt_ent;
3881 /* Symbol st_other. */
3882 unsigned char other;
3885 struct ppc_branch_hash_entry {
3887 /* Base hash table entry structure. */
3888 struct bfd_hash_entry root;
3890 /* Offset within branch lookup table. */
3891 unsigned int offset;
3893 /* Generation marker. */
3897 /* Used to track dynamic relocations for local symbols. */
3898 struct ppc_dyn_relocs
3900 struct ppc_dyn_relocs *next;
3902 /* The input section of the reloc. */
3905 /* Total number of relocs copied for the input section. */
3906 unsigned int count : 31;
3908 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3909 unsigned int ifunc : 1;
3912 struct ppc_link_hash_entry
3914 struct elf_link_hash_entry elf;
3917 /* A pointer to the most recently used stub hash entry against this
3919 struct ppc_stub_hash_entry *stub_cache;
3921 /* A pointer to the next symbol starting with a '.' */
3922 struct ppc_link_hash_entry *next_dot_sym;
3925 /* Track dynamic relocs copied for this symbol. */
3926 struct elf_dyn_relocs *dyn_relocs;
3928 /* Link between function code and descriptor symbols. */
3929 struct ppc_link_hash_entry *oh;
3931 /* Flag function code and descriptor symbols. */
3932 unsigned int is_func:1;
3933 unsigned int is_func_descriptor:1;
3934 unsigned int fake:1;
3936 /* Whether global opd/toc sym has been adjusted or not.
3937 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3938 should be set for all globals defined in any opd/toc section. */
3939 unsigned int adjust_done:1;
3941 /* Set if we twiddled this symbol to weak at some stage. */
3942 unsigned int was_undefined:1;
3944 /* Set if this is an out-of-line register save/restore function,
3945 with non-standard calling convention. */
3946 unsigned int save_res:1;
3948 /* Contexts in which symbol is used in the GOT (or TOC).
3949 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3950 corresponding relocs are encountered during check_relocs.
3951 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3952 indicate the corresponding GOT entry type is not needed.
3953 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3954 a TPREL one. We use a separate flag rather than setting TPREL
3955 just for convenience in distinguishing the two cases. */
3956 #define TLS_GD 1 /* GD reloc. */
3957 #define TLS_LD 2 /* LD reloc. */
3958 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3959 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3960 #define TLS_TLS 16 /* Any TLS reloc. */
3961 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3962 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3963 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3964 unsigned char tls_mask;
3967 /* ppc64 ELF linker hash table. */
3969 struct ppc_link_hash_table
3971 struct elf_link_hash_table elf;
3973 /* The stub hash table. */
3974 struct bfd_hash_table stub_hash_table;
3976 /* Another hash table for plt_branch stubs. */
3977 struct bfd_hash_table branch_hash_table;
3979 /* Hash table for function prologue tocsave. */
3980 htab_t tocsave_htab;
3982 /* Various options and other info passed from the linker. */
3983 struct ppc64_elf_params *params;
3985 /* The size of sec_info below. */
3986 unsigned int sec_info_arr_size;
3988 /* Per-section array of extra section info. Done this way rather
3989 than as part of ppc64_elf_section_data so we have the info for
3990 non-ppc64 sections. */
3993 /* Along with elf_gp, specifies the TOC pointer used by this section. */
3998 /* The section group that this section belongs to. */
3999 struct map_stub *group;
4000 /* A temp section list pointer. */
4005 /* Linked list of groups. */
4006 struct map_stub *group;
4008 /* Temp used when calculating TOC pointers. */
4011 asection *toc_first_sec;
4013 /* Used when adding symbols. */
4014 struct ppc_link_hash_entry *dot_syms;
4016 /* Shortcuts to get to dynamic linker sections. */
4023 asection *glink_eh_frame;
4025 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4026 struct ppc_link_hash_entry *tls_get_addr;
4027 struct ppc_link_hash_entry *tls_get_addr_fd;
4029 /* The size of reliplt used by got entry relocs. */
4030 bfd_size_type got_reli_size;
4033 unsigned long stub_count[ppc_stub_global_entry];
4035 /* Number of stubs against global syms. */
4036 unsigned long stub_globals;
4038 /* Set if we're linking code with function descriptors. */
4039 unsigned int opd_abi:1;
4041 /* Support for multiple toc sections. */
4042 unsigned int do_multi_toc:1;
4043 unsigned int multi_toc_needed:1;
4044 unsigned int second_toc_pass:1;
4045 unsigned int do_toc_opt:1;
4048 unsigned int stub_error:1;
4050 /* Temp used by ppc64_elf_before_check_relocs. */
4051 unsigned int twiddled_syms:1;
4053 /* Incremented every time we size stubs. */
4054 unsigned int stub_iteration;
4056 /* Small local sym cache. */
4057 struct sym_cache sym_cache;
4060 /* Rename some of the generic section flags to better document how they
4063 /* Nonzero if this section has TLS related relocations. */
4064 #define has_tls_reloc sec_flg0
4066 /* Nonzero if this section has a call to __tls_get_addr. */
4067 #define has_tls_get_addr_call sec_flg1
4069 /* Nonzero if this section has any toc or got relocs. */
4070 #define has_toc_reloc sec_flg2
4072 /* Nonzero if this section has a call to another section that uses
4074 #define makes_toc_func_call sec_flg3
4076 /* Recursion protection when determining above flag. */
4077 #define call_check_in_progress sec_flg4
4078 #define call_check_done sec_flg5
4080 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4082 #define ppc_hash_table(p) \
4083 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4084 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4086 #define ppc_stub_hash_lookup(table, string, create, copy) \
4087 ((struct ppc_stub_hash_entry *) \
4088 bfd_hash_lookup ((table), (string), (create), (copy)))
4090 #define ppc_branch_hash_lookup(table, string, create, copy) \
4091 ((struct ppc_branch_hash_entry *) \
4092 bfd_hash_lookup ((table), (string), (create), (copy)))
4094 /* Create an entry in the stub hash table. */
4096 static struct bfd_hash_entry *
4097 stub_hash_newfunc (struct bfd_hash_entry *entry,
4098 struct bfd_hash_table *table,
4101 /* Allocate the structure if it has not already been allocated by a
4105 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4110 /* Call the allocation method of the superclass. */
4111 entry = bfd_hash_newfunc (entry, table, string);
4114 struct ppc_stub_hash_entry *eh;
4116 /* Initialize the local fields. */
4117 eh = (struct ppc_stub_hash_entry *) entry;
4118 eh->stub_type = ppc_stub_none;
4120 eh->stub_offset = 0;
4121 eh->target_value = 0;
4122 eh->target_section = NULL;
4131 /* Create an entry in the branch hash table. */
4133 static struct bfd_hash_entry *
4134 branch_hash_newfunc (struct bfd_hash_entry *entry,
4135 struct bfd_hash_table *table,
4138 /* Allocate the structure if it has not already been allocated by a
4142 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4147 /* Call the allocation method of the superclass. */
4148 entry = bfd_hash_newfunc (entry, table, string);
4151 struct ppc_branch_hash_entry *eh;
4153 /* Initialize the local fields. */
4154 eh = (struct ppc_branch_hash_entry *) entry;
4162 /* Create an entry in a ppc64 ELF linker hash table. */
4164 static struct bfd_hash_entry *
4165 link_hash_newfunc (struct bfd_hash_entry *entry,
4166 struct bfd_hash_table *table,
4169 /* Allocate the structure if it has not already been allocated by a
4173 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4178 /* Call the allocation method of the superclass. */
4179 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4182 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4184 memset (&eh->u.stub_cache, 0,
4185 (sizeof (struct ppc_link_hash_entry)
4186 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4188 /* When making function calls, old ABI code references function entry
4189 points (dot symbols), while new ABI code references the function
4190 descriptor symbol. We need to make any combination of reference and
4191 definition work together, without breaking archive linking.
4193 For a defined function "foo" and an undefined call to "bar":
4194 An old object defines "foo" and ".foo", references ".bar" (possibly
4196 A new object defines "foo" and references "bar".
4198 A new object thus has no problem with its undefined symbols being
4199 satisfied by definitions in an old object. On the other hand, the
4200 old object won't have ".bar" satisfied by a new object.
4202 Keep a list of newly added dot-symbols. */
4204 if (string[0] == '.')
4206 struct ppc_link_hash_table *htab;
4208 htab = (struct ppc_link_hash_table *) table;
4209 eh->u.next_dot_sym = htab->dot_syms;
4210 htab->dot_syms = eh;
4217 struct tocsave_entry {
4223 tocsave_htab_hash (const void *p)
4225 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4226 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4230 tocsave_htab_eq (const void *p1, const void *p2)
4232 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4233 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4234 return e1->sec == e2->sec && e1->offset == e2->offset;
4237 /* Destroy a ppc64 ELF linker hash table. */
4240 ppc64_elf_link_hash_table_free (bfd *obfd)
4242 struct ppc_link_hash_table *htab;
4244 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4245 if (htab->tocsave_htab)
4246 htab_delete (htab->tocsave_htab);
4247 bfd_hash_table_free (&htab->branch_hash_table);
4248 bfd_hash_table_free (&htab->stub_hash_table);
4249 _bfd_elf_link_hash_table_free (obfd);
4252 /* Create a ppc64 ELF linker hash table. */
4254 static struct bfd_link_hash_table *
4255 ppc64_elf_link_hash_table_create (bfd *abfd)
4257 struct ppc_link_hash_table *htab;
4258 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4260 htab = bfd_zmalloc (amt);
4264 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4265 sizeof (struct ppc_link_hash_entry),
4272 /* Init the stub hash table too. */
4273 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4274 sizeof (struct ppc_stub_hash_entry)))
4276 _bfd_elf_link_hash_table_free (abfd);
4280 /* And the branch hash table. */
4281 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4282 sizeof (struct ppc_branch_hash_entry)))
4284 bfd_hash_table_free (&htab->stub_hash_table);
4285 _bfd_elf_link_hash_table_free (abfd);
4289 htab->tocsave_htab = htab_try_create (1024,
4293 if (htab->tocsave_htab == NULL)
4295 ppc64_elf_link_hash_table_free (abfd);
4298 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4300 /* Initializing two fields of the union is just cosmetic. We really
4301 only care about glist, but when compiled on a 32-bit host the
4302 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4303 debugger inspection of these fields look nicer. */
4304 htab->elf.init_got_refcount.refcount = 0;
4305 htab->elf.init_got_refcount.glist = NULL;
4306 htab->elf.init_plt_refcount.refcount = 0;
4307 htab->elf.init_plt_refcount.glist = NULL;
4308 htab->elf.init_got_offset.offset = 0;
4309 htab->elf.init_got_offset.glist = NULL;
4310 htab->elf.init_plt_offset.offset = 0;
4311 htab->elf.init_plt_offset.glist = NULL;
4313 return &htab->elf.root;
4316 /* Create sections for linker generated code. */
4319 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4321 struct ppc_link_hash_table *htab;
4324 htab = ppc_hash_table (info);
4326 /* Create .sfpr for code to save and restore fp regs. */
4327 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4328 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4329 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4331 if (htab->sfpr == NULL
4332 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4335 /* Create .glink for lazy dynamic linking support. */
4336 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4338 if (htab->glink == NULL
4339 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4342 if (!info->no_ld_generated_unwind_info)
4344 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4345 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4346 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4349 if (htab->glink_eh_frame == NULL
4350 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4354 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4355 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4356 if (htab->elf.iplt == NULL
4357 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4360 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4361 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4363 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4364 if (htab->elf.irelplt == NULL
4365 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4368 /* Create branch lookup table for plt_branch stubs. */
4369 flags = (SEC_ALLOC | SEC_LOAD
4370 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4371 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4373 if (htab->brlt == NULL
4374 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4377 if (!bfd_link_pic (info))
4380 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4381 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4382 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4385 if (htab->relbrlt == NULL
4386 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4392 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4395 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4396 struct ppc64_elf_params *params)
4398 struct ppc_link_hash_table *htab;
4400 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4402 /* Always hook our dynamic sections into the first bfd, which is the
4403 linker created stub bfd. This ensures that the GOT header is at
4404 the start of the output TOC section. */
4405 htab = ppc_hash_table (info);
4408 htab->elf.dynobj = params->stub_bfd;
4409 htab->params = params;
4411 if (bfd_link_relocatable (info))
4414 return create_linkage_sections (htab->elf.dynobj, info);
4417 /* Build a name for an entry in the stub hash table. */
4420 ppc_stub_name (const asection *input_section,
4421 const asection *sym_sec,
4422 const struct ppc_link_hash_entry *h,
4423 const Elf_Internal_Rela *rel)
4428 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4429 offsets from a sym as a branch target? In fact, we could
4430 probably assume the addend is always zero. */
4431 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4435 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4436 stub_name = bfd_malloc (len);
4437 if (stub_name == NULL)
4440 len = sprintf (stub_name, "%08x.%s+%x",
4441 input_section->id & 0xffffffff,
4442 h->elf.root.root.string,
4443 (int) rel->r_addend & 0xffffffff);
4447 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4448 stub_name = bfd_malloc (len);
4449 if (stub_name == NULL)
4452 len = sprintf (stub_name, "%08x.%x:%x+%x",
4453 input_section->id & 0xffffffff,
4454 sym_sec->id & 0xffffffff,
4455 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4456 (int) rel->r_addend & 0xffffffff);
4458 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4459 stub_name[len - 2] = 0;
4463 /* Look up an entry in the stub hash. Stub entries are cached because
4464 creating the stub name takes a bit of time. */
4466 static struct ppc_stub_hash_entry *
4467 ppc_get_stub_entry (const asection *input_section,
4468 const asection *sym_sec,
4469 struct ppc_link_hash_entry *h,
4470 const Elf_Internal_Rela *rel,
4471 struct ppc_link_hash_table *htab)
4473 struct ppc_stub_hash_entry *stub_entry;
4474 struct map_stub *group;
4476 /* If this input section is part of a group of sections sharing one
4477 stub section, then use the id of the first section in the group.
4478 Stub names need to include a section id, as there may well be
4479 more than one stub used to reach say, printf, and we need to
4480 distinguish between them. */
4481 group = htab->sec_info[input_section->id].u.group;
4483 if (h != NULL && h->u.stub_cache != NULL
4484 && h->u.stub_cache->h == h
4485 && h->u.stub_cache->group == group)
4487 stub_entry = h->u.stub_cache;
4493 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4494 if (stub_name == NULL)
4497 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4498 stub_name, FALSE, FALSE);
4500 h->u.stub_cache = stub_entry;
4508 /* Add a new stub entry to the stub hash. Not all fields of the new
4509 stub entry are initialised. */
4511 static struct ppc_stub_hash_entry *
4512 ppc_add_stub (const char *stub_name,
4514 struct bfd_link_info *info)
4516 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4517 struct map_stub *group;
4520 struct ppc_stub_hash_entry *stub_entry;
4522 group = htab->sec_info[section->id].u.group;
4523 link_sec = group->link_sec;
4524 stub_sec = group->stub_sec;
4525 if (stub_sec == NULL)
4531 namelen = strlen (link_sec->name);
4532 len = namelen + sizeof (STUB_SUFFIX);
4533 s_name = bfd_alloc (htab->params->stub_bfd, len);
4537 memcpy (s_name, link_sec->name, namelen);
4538 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4539 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4540 if (stub_sec == NULL)
4542 group->stub_sec = stub_sec;
4545 /* Enter this entry into the linker stub hash table. */
4546 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4548 if (stub_entry == NULL)
4550 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4551 section->owner, stub_name);
4555 stub_entry->group = group;
4556 stub_entry->stub_offset = 0;
4560 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4561 not already done. */
4564 create_got_section (bfd *abfd, struct bfd_link_info *info)
4566 asection *got, *relgot;
4568 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4570 if (!is_ppc64_elf (abfd))
4576 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4579 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4580 | SEC_LINKER_CREATED);
4582 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4584 || !bfd_set_section_alignment (abfd, got, 3))
4587 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4588 flags | SEC_READONLY);
4590 || ! bfd_set_section_alignment (abfd, relgot, 3))
4593 ppc64_elf_tdata (abfd)->got = got;
4594 ppc64_elf_tdata (abfd)->relgot = relgot;
4598 /* Create the dynamic sections, and set up shortcuts. */
4601 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4603 struct ppc_link_hash_table *htab;
4605 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4608 htab = ppc_hash_table (info);
4612 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4613 if (!bfd_link_pic (info))
4614 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4616 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4617 || (!bfd_link_pic (info) && !htab->relbss))
4623 /* Follow indirect and warning symbol links. */
4625 static inline struct bfd_link_hash_entry *
4626 follow_link (struct bfd_link_hash_entry *h)
4628 while (h->type == bfd_link_hash_indirect
4629 || h->type == bfd_link_hash_warning)
4634 static inline struct elf_link_hash_entry *
4635 elf_follow_link (struct elf_link_hash_entry *h)
4637 return (struct elf_link_hash_entry *) follow_link (&h->root);
4640 static inline struct ppc_link_hash_entry *
4641 ppc_follow_link (struct ppc_link_hash_entry *h)
4643 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4646 /* Merge PLT info on FROM with that on TO. */
4649 move_plt_plist (struct ppc_link_hash_entry *from,
4650 struct ppc_link_hash_entry *to)
4652 if (from->elf.plt.plist != NULL)
4654 if (to->elf.plt.plist != NULL)
4656 struct plt_entry **entp;
4657 struct plt_entry *ent;
4659 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4661 struct plt_entry *dent;
4663 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4664 if (dent->addend == ent->addend)
4666 dent->plt.refcount += ent->plt.refcount;
4673 *entp = to->elf.plt.plist;
4676 to->elf.plt.plist = from->elf.plt.plist;
4677 from->elf.plt.plist = NULL;
4681 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4684 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4685 struct elf_link_hash_entry *dir,
4686 struct elf_link_hash_entry *ind)
4688 struct ppc_link_hash_entry *edir, *eind;
4690 edir = (struct ppc_link_hash_entry *) dir;
4691 eind = (struct ppc_link_hash_entry *) ind;
4693 edir->is_func |= eind->is_func;
4694 edir->is_func_descriptor |= eind->is_func_descriptor;
4695 edir->tls_mask |= eind->tls_mask;
4696 if (eind->oh != NULL)
4697 edir->oh = ppc_follow_link (eind->oh);
4699 /* If called to transfer flags for a weakdef during processing
4700 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4701 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4702 if (!(ELIMINATE_COPY_RELOCS
4703 && eind->elf.root.type != bfd_link_hash_indirect
4704 && edir->elf.dynamic_adjusted))
4705 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4707 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4708 edir->elf.ref_regular |= eind->elf.ref_regular;
4709 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4710 edir->elf.needs_plt |= eind->elf.needs_plt;
4711 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4713 /* Copy over any dynamic relocs we may have on the indirect sym. */
4714 if (eind->dyn_relocs != NULL)
4716 if (edir->dyn_relocs != NULL)
4718 struct elf_dyn_relocs **pp;
4719 struct elf_dyn_relocs *p;
4721 /* Add reloc counts against the indirect sym to the direct sym
4722 list. Merge any entries against the same section. */
4723 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4725 struct elf_dyn_relocs *q;
4727 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4728 if (q->sec == p->sec)
4730 q->pc_count += p->pc_count;
4731 q->count += p->count;
4738 *pp = edir->dyn_relocs;
4741 edir->dyn_relocs = eind->dyn_relocs;
4742 eind->dyn_relocs = NULL;
4745 /* If we were called to copy over info for a weak sym, that's all.
4746 You might think dyn_relocs need not be copied over; After all,
4747 both syms will be dynamic or both non-dynamic so we're just
4748 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4749 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4750 dyn_relocs in read-only sections, and it does so on what is the
4752 if (eind->elf.root.type != bfd_link_hash_indirect)
4755 /* Copy over got entries that we may have already seen to the
4756 symbol which just became indirect. */
4757 if (eind->elf.got.glist != NULL)
4759 if (edir->elf.got.glist != NULL)
4761 struct got_entry **entp;
4762 struct got_entry *ent;
4764 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4766 struct got_entry *dent;
4768 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4769 if (dent->addend == ent->addend
4770 && dent->owner == ent->owner
4771 && dent->tls_type == ent->tls_type)
4773 dent->got.refcount += ent->got.refcount;
4780 *entp = edir->elf.got.glist;
4783 edir->elf.got.glist = eind->elf.got.glist;
4784 eind->elf.got.glist = NULL;
4787 /* And plt entries. */
4788 move_plt_plist (eind, edir);
4790 if (eind->elf.dynindx != -1)
4792 if (edir->elf.dynindx != -1)
4793 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4794 edir->elf.dynstr_index);
4795 edir->elf.dynindx = eind->elf.dynindx;
4796 edir->elf.dynstr_index = eind->elf.dynstr_index;
4797 eind->elf.dynindx = -1;
4798 eind->elf.dynstr_index = 0;
4802 /* Find the function descriptor hash entry from the given function code
4803 hash entry FH. Link the entries via their OH fields. */
4805 static struct ppc_link_hash_entry *
4806 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4808 struct ppc_link_hash_entry *fdh = fh->oh;
4812 const char *fd_name = fh->elf.root.root.string + 1;
4814 fdh = (struct ppc_link_hash_entry *)
4815 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4819 fdh->is_func_descriptor = 1;
4825 return ppc_follow_link (fdh);
4828 /* Make a fake function descriptor sym for the code sym FH. */
4830 static struct ppc_link_hash_entry *
4831 make_fdh (struct bfd_link_info *info,
4832 struct ppc_link_hash_entry *fh)
4836 struct bfd_link_hash_entry *bh;
4837 struct ppc_link_hash_entry *fdh;
4839 abfd = fh->elf.root.u.undef.abfd;
4840 newsym = bfd_make_empty_symbol (abfd);
4841 newsym->name = fh->elf.root.root.string + 1;
4842 newsym->section = bfd_und_section_ptr;
4844 newsym->flags = BSF_WEAK;
4847 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4848 newsym->flags, newsym->section,
4849 newsym->value, NULL, FALSE, FALSE,
4853 fdh = (struct ppc_link_hash_entry *) bh;
4854 fdh->elf.non_elf = 0;
4856 fdh->is_func_descriptor = 1;
4863 /* Fix function descriptor symbols defined in .opd sections to be
4867 ppc64_elf_add_symbol_hook (bfd *ibfd,
4868 struct bfd_link_info *info,
4869 Elf_Internal_Sym *isym,
4871 flagword *flags ATTRIBUTE_UNUSED,
4875 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4876 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4877 && (ibfd->flags & DYNAMIC) == 0
4878 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4879 elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
4882 && strcmp ((*sec)->name, ".opd") == 0)
4886 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4887 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4888 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4890 /* If the symbol is a function defined in .opd, and the function
4891 code is in a discarded group, let it appear to be undefined. */
4892 if (!bfd_link_relocatable (info)
4893 && (*sec)->reloc_count != 0
4894 && opd_entry_value (*sec, *value, &code_sec, NULL,
4895 FALSE) != (bfd_vma) -1
4896 && discarded_section (code_sec))
4898 *sec = bfd_und_section_ptr;
4899 isym->st_shndx = SHN_UNDEF;
4902 else if (*sec != NULL
4903 && strcmp ((*sec)->name, ".toc") == 0
4904 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4906 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4908 htab->params->object_in_toc = 1;
4911 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4913 if (abiversion (ibfd) == 0)
4914 set_abiversion (ibfd, 2);
4915 else if (abiversion (ibfd) == 1)
4917 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4918 " for ABI version 1\n"), name);
4919 bfd_set_error (bfd_error_bad_value);
4927 /* Merge non-visibility st_other attributes: local entry point. */
4930 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4931 const Elf_Internal_Sym *isym,
4932 bfd_boolean definition,
4933 bfd_boolean dynamic)
4935 if (definition && !dynamic)
4936 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4937 | ELF_ST_VISIBILITY (h->other));
4940 /* This function makes an old ABI object reference to ".bar" cause the
4941 inclusion of a new ABI object archive that defines "bar".
4942 NAME is a symbol defined in an archive. Return a symbol in the hash
4943 table that might be satisfied by the archive symbols. */
4945 static struct elf_link_hash_entry *
4946 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4947 struct bfd_link_info *info,
4950 struct elf_link_hash_entry *h;
4954 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4956 /* Don't return this sym if it is a fake function descriptor
4957 created by add_symbol_adjust. */
4958 && !(h->root.type == bfd_link_hash_undefweak
4959 && ((struct ppc_link_hash_entry *) h)->fake))
4965 len = strlen (name);
4966 dot_name = bfd_alloc (abfd, len + 2);
4967 if (dot_name == NULL)
4968 return (struct elf_link_hash_entry *) 0 - 1;
4970 memcpy (dot_name + 1, name, len + 1);
4971 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4972 bfd_release (abfd, dot_name);
4976 /* This function satisfies all old ABI object references to ".bar" if a
4977 new ABI object defines "bar". Well, at least, undefined dot symbols
4978 are made weak. This stops later archive searches from including an
4979 object if we already have a function descriptor definition. It also
4980 prevents the linker complaining about undefined symbols.
4981 We also check and correct mismatched symbol visibility here. The
4982 most restrictive visibility of the function descriptor and the
4983 function entry symbol is used. */
4986 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4988 struct ppc_link_hash_table *htab;
4989 struct ppc_link_hash_entry *fdh;
4991 if (eh->elf.root.type == bfd_link_hash_indirect)
4994 if (eh->elf.root.type == bfd_link_hash_warning)
4995 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4997 if (eh->elf.root.root.string[0] != '.')
5000 htab = ppc_hash_table (info);
5004 fdh = lookup_fdh (eh, htab);
5007 if (!bfd_link_relocatable (info)
5008 && (eh->elf.root.type == bfd_link_hash_undefined
5009 || eh->elf.root.type == bfd_link_hash_undefweak)
5010 && eh->elf.ref_regular)
5012 /* Make an undefweak function descriptor sym, which is enough to
5013 pull in an --as-needed shared lib, but won't cause link
5014 errors. Archives are handled elsewhere. */
5015 fdh = make_fdh (info, eh);
5018 fdh->elf.ref_regular = 1;
5023 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5024 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5025 if (entry_vis < descr_vis)
5026 fdh->elf.other += entry_vis - descr_vis;
5027 else if (entry_vis > descr_vis)
5028 eh->elf.other += descr_vis - entry_vis;
5030 if ((fdh->elf.root.type == bfd_link_hash_defined
5031 || fdh->elf.root.type == bfd_link_hash_defweak)
5032 && eh->elf.root.type == bfd_link_hash_undefined)
5034 eh->elf.root.type = bfd_link_hash_undefweak;
5035 eh->was_undefined = 1;
5036 htab->twiddled_syms = 1;
5043 /* Set up opd section info and abiversion for IBFD, and process list
5044 of dot-symbols we made in link_hash_newfunc. */
5047 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5049 struct ppc_link_hash_table *htab;
5050 struct ppc_link_hash_entry **p, *eh;
5051 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5053 if (opd != NULL && opd->size != 0)
5055 if (abiversion (ibfd) == 0)
5056 set_abiversion (ibfd, 1);
5057 else if (abiversion (ibfd) == 2)
5059 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5061 ibfd, abiversion (ibfd));
5062 bfd_set_error (bfd_error_bad_value);
5066 if ((ibfd->flags & DYNAMIC) == 0
5067 && (opd->flags & SEC_RELOC) != 0
5068 && opd->reloc_count != 0
5069 && !bfd_is_abs_section (opd->output_section))
5071 /* Garbage collection needs some extra help with .opd sections.
5072 We don't want to necessarily keep everything referenced by
5073 relocs in .opd, as that would keep all functions. Instead,
5074 if we reference an .opd symbol (a function descriptor), we
5075 want to keep the function code symbol's section. This is
5076 easy for global symbols, but for local syms we need to keep
5077 information about the associated function section. */
5079 asection **opd_sym_map;
5081 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5082 opd_sym_map = bfd_zalloc (ibfd, amt);
5083 if (opd_sym_map == NULL)
5085 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5086 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5087 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5091 if (!is_ppc64_elf (info->output_bfd))
5093 htab = ppc_hash_table (info);
5097 /* For input files without an explicit abiversion in e_flags
5098 we should have flagged any with symbol st_other bits set
5099 as ELFv1 and above flagged those with .opd as ELFv2.
5100 Set the output abiversion if not yet set, and for any input
5101 still ambiguous, take its abiversion from the output.
5102 Differences in ABI are reported later. */
5103 if (abiversion (info->output_bfd) == 0)
5104 set_abiversion (info->output_bfd, abiversion (ibfd));
5105 else if (abiversion (ibfd) == 0)
5106 set_abiversion (ibfd, abiversion (info->output_bfd));
5108 p = &htab->dot_syms;
5109 while ((eh = *p) != NULL)
5112 if (&eh->elf == htab->elf.hgot)
5114 else if (htab->elf.hgot == NULL
5115 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5116 htab->elf.hgot = &eh->elf;
5117 else if (!add_symbol_adjust (eh, info))
5119 p = &eh->u.next_dot_sym;
5122 /* Clear the list for non-ppc64 input files. */
5123 p = &htab->dot_syms;
5124 while ((eh = *p) != NULL)
5127 p = &eh->u.next_dot_sym;
5130 /* We need to fix the undefs list for any syms we have twiddled to
5132 if (htab->twiddled_syms)
5134 bfd_link_repair_undef_list (&htab->elf.root);
5135 htab->twiddled_syms = 0;
5140 /* Undo hash table changes when an --as-needed input file is determined
5141 not to be needed. */
5144 ppc64_elf_notice_as_needed (bfd *ibfd,
5145 struct bfd_link_info *info,
5146 enum notice_asneeded_action act)
5148 if (act == notice_not_needed)
5150 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5155 htab->dot_syms = NULL;
5157 return _bfd_elf_notice_as_needed (ibfd, info, act);
5160 /* If --just-symbols against a final linked binary, then assume we need
5161 toc adjusting stubs when calling functions defined there. */
5164 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5166 if ((sec->flags & SEC_CODE) != 0
5167 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5168 && is_ppc64_elf (sec->owner))
5170 if (abiversion (sec->owner) >= 2
5171 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5172 sec->has_toc_reloc = 1;
5174 _bfd_elf_link_just_syms (sec, info);
5177 static struct plt_entry **
5178 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5179 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5181 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5182 struct plt_entry **local_plt;
5183 unsigned char *local_got_tls_masks;
5185 if (local_got_ents == NULL)
5187 bfd_size_type size = symtab_hdr->sh_info;
5189 size *= (sizeof (*local_got_ents)
5190 + sizeof (*local_plt)
5191 + sizeof (*local_got_tls_masks));
5192 local_got_ents = bfd_zalloc (abfd, size);
5193 if (local_got_ents == NULL)
5195 elf_local_got_ents (abfd) = local_got_ents;
5198 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5200 struct got_entry *ent;
5202 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5203 if (ent->addend == r_addend
5204 && ent->owner == abfd
5205 && ent->tls_type == tls_type)
5209 bfd_size_type amt = sizeof (*ent);
5210 ent = bfd_alloc (abfd, amt);
5213 ent->next = local_got_ents[r_symndx];
5214 ent->addend = r_addend;
5216 ent->tls_type = tls_type;
5217 ent->is_indirect = FALSE;
5218 ent->got.refcount = 0;
5219 local_got_ents[r_symndx] = ent;
5221 ent->got.refcount += 1;
5224 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5225 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5226 local_got_tls_masks[r_symndx] |= tls_type;
5228 return local_plt + r_symndx;
5232 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5234 struct plt_entry *ent;
5236 for (ent = *plist; ent != NULL; ent = ent->next)
5237 if (ent->addend == addend)
5241 bfd_size_type amt = sizeof (*ent);
5242 ent = bfd_alloc (abfd, amt);
5246 ent->addend = addend;
5247 ent->plt.refcount = 0;
5250 ent->plt.refcount += 1;
5255 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5257 return (r_type == R_PPC64_REL24
5258 || r_type == R_PPC64_REL14
5259 || r_type == R_PPC64_REL14_BRTAKEN
5260 || r_type == R_PPC64_REL14_BRNTAKEN
5261 || r_type == R_PPC64_ADDR24
5262 || r_type == R_PPC64_ADDR14
5263 || r_type == R_PPC64_ADDR14_BRTAKEN
5264 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5267 /* Look through the relocs for a section during the first phase, and
5268 calculate needed space in the global offset table, procedure
5269 linkage table, and dynamic reloc sections. */
5272 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5273 asection *sec, const Elf_Internal_Rela *relocs)
5275 struct ppc_link_hash_table *htab;
5276 Elf_Internal_Shdr *symtab_hdr;
5277 struct elf_link_hash_entry **sym_hashes;
5278 const Elf_Internal_Rela *rel;
5279 const Elf_Internal_Rela *rel_end;
5281 asection **opd_sym_map;
5282 struct elf_link_hash_entry *tga, *dottga;
5284 if (bfd_link_relocatable (info))
5287 /* Don't do anything special with non-loaded, non-alloced sections.
5288 In particular, any relocs in such sections should not affect GOT
5289 and PLT reference counting (ie. we don't allow them to create GOT
5290 or PLT entries), there's no possibility or desire to optimize TLS
5291 relocs, and there's not much point in propagating relocs to shared
5292 libs that the dynamic linker won't relocate. */
5293 if ((sec->flags & SEC_ALLOC) == 0)
5296 BFD_ASSERT (is_ppc64_elf (abfd));
5298 htab = ppc_hash_table (info);
5302 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5303 FALSE, FALSE, TRUE);
5304 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5305 FALSE, FALSE, TRUE);
5306 symtab_hdr = &elf_symtab_hdr (abfd);
5307 sym_hashes = elf_sym_hashes (abfd);
5310 if (ppc64_elf_section_data (sec) != NULL
5311 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5312 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5314 rel_end = relocs + sec->reloc_count;
5315 for (rel = relocs; rel < rel_end; rel++)
5317 unsigned long r_symndx;
5318 struct elf_link_hash_entry *h;
5319 enum elf_ppc64_reloc_type r_type;
5321 struct _ppc64_elf_section_data *ppc64_sec;
5322 struct plt_entry **ifunc;
5324 r_symndx = ELF64_R_SYM (rel->r_info);
5325 if (r_symndx < symtab_hdr->sh_info)
5329 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5330 h = elf_follow_link (h);
5332 /* PR15323, ref flags aren't set for references in the same
5334 h->root.non_ir_ref = 1;
5336 if (h == htab->elf.hgot)
5337 sec->has_toc_reloc = 1;
5344 if (h->type == STT_GNU_IFUNC)
5347 ifunc = &h->plt.plist;
5352 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5357 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5359 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5360 rel->r_addend, PLT_IFUNC);
5365 r_type = ELF64_R_TYPE (rel->r_info);
5366 if (is_branch_reloc (r_type))
5368 if (h != NULL && (h == tga || h == dottga))
5371 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5372 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5373 /* We have a new-style __tls_get_addr call with a marker
5377 /* Mark this section as having an old-style call. */
5378 sec->has_tls_get_addr_call = 1;
5381 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5383 && !update_plt_info (abfd, ifunc, rel->r_addend))
5391 /* These special tls relocs tie a call to __tls_get_addr with
5392 its parameter symbol. */
5395 case R_PPC64_GOT_TLSLD16:
5396 case R_PPC64_GOT_TLSLD16_LO:
5397 case R_PPC64_GOT_TLSLD16_HI:
5398 case R_PPC64_GOT_TLSLD16_HA:
5399 tls_type = TLS_TLS | TLS_LD;
5402 case R_PPC64_GOT_TLSGD16:
5403 case R_PPC64_GOT_TLSGD16_LO:
5404 case R_PPC64_GOT_TLSGD16_HI:
5405 case R_PPC64_GOT_TLSGD16_HA:
5406 tls_type = TLS_TLS | TLS_GD;
5409 case R_PPC64_GOT_TPREL16_DS:
5410 case R_PPC64_GOT_TPREL16_LO_DS:
5411 case R_PPC64_GOT_TPREL16_HI:
5412 case R_PPC64_GOT_TPREL16_HA:
5413 if (bfd_link_pic (info))
5414 info->flags |= DF_STATIC_TLS;
5415 tls_type = TLS_TLS | TLS_TPREL;
5418 case R_PPC64_GOT_DTPREL16_DS:
5419 case R_PPC64_GOT_DTPREL16_LO_DS:
5420 case R_PPC64_GOT_DTPREL16_HI:
5421 case R_PPC64_GOT_DTPREL16_HA:
5422 tls_type = TLS_TLS | TLS_DTPREL;
5424 sec->has_tls_reloc = 1;
5428 case R_PPC64_GOT16_DS:
5429 case R_PPC64_GOT16_HA:
5430 case R_PPC64_GOT16_HI:
5431 case R_PPC64_GOT16_LO:
5432 case R_PPC64_GOT16_LO_DS:
5433 /* This symbol requires a global offset table entry. */
5434 sec->has_toc_reloc = 1;
5435 if (r_type == R_PPC64_GOT_TLSLD16
5436 || r_type == R_PPC64_GOT_TLSGD16
5437 || r_type == R_PPC64_GOT_TPREL16_DS
5438 || r_type == R_PPC64_GOT_DTPREL16_DS
5439 || r_type == R_PPC64_GOT16
5440 || r_type == R_PPC64_GOT16_DS)
5442 htab->do_multi_toc = 1;
5443 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5446 if (ppc64_elf_tdata (abfd)->got == NULL
5447 && !create_got_section (abfd, info))
5452 struct ppc_link_hash_entry *eh;
5453 struct got_entry *ent;
5455 eh = (struct ppc_link_hash_entry *) h;
5456 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5457 if (ent->addend == rel->r_addend
5458 && ent->owner == abfd
5459 && ent->tls_type == tls_type)
5463 bfd_size_type amt = sizeof (*ent);
5464 ent = bfd_alloc (abfd, amt);
5467 ent->next = eh->elf.got.glist;
5468 ent->addend = rel->r_addend;
5470 ent->tls_type = tls_type;
5471 ent->is_indirect = FALSE;
5472 ent->got.refcount = 0;
5473 eh->elf.got.glist = ent;
5475 ent->got.refcount += 1;
5476 eh->tls_mask |= tls_type;
5479 /* This is a global offset table entry for a local symbol. */
5480 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5481 rel->r_addend, tls_type))
5484 /* We may also need a plt entry if the symbol turns out to be
5486 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5488 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5493 case R_PPC64_PLT16_HA:
5494 case R_PPC64_PLT16_HI:
5495 case R_PPC64_PLT16_LO:
5498 /* This symbol requires a procedure linkage table entry. We
5499 actually build the entry in adjust_dynamic_symbol,
5500 because this might be a case of linking PIC code without
5501 linking in any dynamic objects, in which case we don't
5502 need to generate a procedure linkage table after all. */
5505 /* It does not make sense to have a procedure linkage
5506 table entry for a local symbol. */
5507 bfd_set_error (bfd_error_bad_value);
5512 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5515 if (h->root.root.string[0] == '.'
5516 && h->root.root.string[1] != '\0')
5517 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5521 /* The following relocations don't need to propagate the
5522 relocation if linking a shared object since they are
5523 section relative. */
5524 case R_PPC64_SECTOFF:
5525 case R_PPC64_SECTOFF_LO:
5526 case R_PPC64_SECTOFF_HI:
5527 case R_PPC64_SECTOFF_HA:
5528 case R_PPC64_SECTOFF_DS:
5529 case R_PPC64_SECTOFF_LO_DS:
5530 case R_PPC64_DTPREL16:
5531 case R_PPC64_DTPREL16_LO:
5532 case R_PPC64_DTPREL16_HI:
5533 case R_PPC64_DTPREL16_HA:
5534 case R_PPC64_DTPREL16_DS:
5535 case R_PPC64_DTPREL16_LO_DS:
5536 case R_PPC64_DTPREL16_HIGH:
5537 case R_PPC64_DTPREL16_HIGHA:
5538 case R_PPC64_DTPREL16_HIGHER:
5539 case R_PPC64_DTPREL16_HIGHERA:
5540 case R_PPC64_DTPREL16_HIGHEST:
5541 case R_PPC64_DTPREL16_HIGHESTA:
5546 case R_PPC64_REL16_LO:
5547 case R_PPC64_REL16_HI:
5548 case R_PPC64_REL16_HA:
5549 case R_PPC64_REL16DX_HA:
5552 /* Not supported as a dynamic relocation. */
5553 case R_PPC64_ADDR64_LOCAL:
5554 if (bfd_link_pic (info))
5556 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5558 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5559 "in shared libraries and PIEs.\n"),
5560 abfd, sec, rel->r_offset,
5561 ppc64_elf_howto_table[r_type]->name);
5562 bfd_set_error (bfd_error_bad_value);
5568 case R_PPC64_TOC16_DS:
5569 htab->do_multi_toc = 1;
5570 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5571 case R_PPC64_TOC16_LO:
5572 case R_PPC64_TOC16_HI:
5573 case R_PPC64_TOC16_HA:
5574 case R_PPC64_TOC16_LO_DS:
5575 sec->has_toc_reloc = 1;
5578 /* This relocation describes the C++ object vtable hierarchy.
5579 Reconstruct it for later use during GC. */
5580 case R_PPC64_GNU_VTINHERIT:
5581 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5585 /* This relocation describes which C++ vtable entries are actually
5586 used. Record for later use during GC. */
5587 case R_PPC64_GNU_VTENTRY:
5588 BFD_ASSERT (h != NULL);
5590 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5595 case R_PPC64_REL14_BRTAKEN:
5596 case R_PPC64_REL14_BRNTAKEN:
5598 asection *dest = NULL;
5600 /* Heuristic: If jumping outside our section, chances are
5601 we are going to need a stub. */
5604 /* If the sym is weak it may be overridden later, so
5605 don't assume we know where a weak sym lives. */
5606 if (h->root.type == bfd_link_hash_defined)
5607 dest = h->root.u.def.section;
5611 Elf_Internal_Sym *isym;
5613 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5618 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5622 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5627 if (h != NULL && ifunc == NULL)
5629 /* We may need a .plt entry if the function this reloc
5630 refers to is in a shared lib. */
5631 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5634 if (h->root.root.string[0] == '.'
5635 && h->root.root.string[1] != '\0')
5636 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5637 if (h == tga || h == dottga)
5638 sec->has_tls_reloc = 1;
5642 case R_PPC64_TPREL64:
5643 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5644 if (bfd_link_pic (info))
5645 info->flags |= DF_STATIC_TLS;
5648 case R_PPC64_DTPMOD64:
5649 if (rel + 1 < rel_end
5650 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5651 && rel[1].r_offset == rel->r_offset + 8)
5652 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5654 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5657 case R_PPC64_DTPREL64:
5658 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5660 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5661 && rel[-1].r_offset == rel->r_offset - 8)
5662 /* This is the second reloc of a dtpmod, dtprel pair.
5663 Don't mark with TLS_DTPREL. */
5667 sec->has_tls_reloc = 1;
5670 struct ppc_link_hash_entry *eh;
5671 eh = (struct ppc_link_hash_entry *) h;
5672 eh->tls_mask |= tls_type;
5675 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5676 rel->r_addend, tls_type))
5679 ppc64_sec = ppc64_elf_section_data (sec);
5680 if (ppc64_sec->sec_type != sec_toc)
5684 /* One extra to simplify get_tls_mask. */
5685 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5686 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5687 if (ppc64_sec->u.toc.symndx == NULL)
5689 amt = sec->size * sizeof (bfd_vma) / 8;
5690 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5691 if (ppc64_sec->u.toc.add == NULL)
5693 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5694 ppc64_sec->sec_type = sec_toc;
5696 BFD_ASSERT (rel->r_offset % 8 == 0);
5697 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5698 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5700 /* Mark the second slot of a GD or LD entry.
5701 -1 to indicate GD and -2 to indicate LD. */
5702 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5703 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5704 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5705 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5708 case R_PPC64_TPREL16:
5709 case R_PPC64_TPREL16_LO:
5710 case R_PPC64_TPREL16_HI:
5711 case R_PPC64_TPREL16_HA:
5712 case R_PPC64_TPREL16_DS:
5713 case R_PPC64_TPREL16_LO_DS:
5714 case R_PPC64_TPREL16_HIGH:
5715 case R_PPC64_TPREL16_HIGHA:
5716 case R_PPC64_TPREL16_HIGHER:
5717 case R_PPC64_TPREL16_HIGHERA:
5718 case R_PPC64_TPREL16_HIGHEST:
5719 case R_PPC64_TPREL16_HIGHESTA:
5720 if (bfd_link_pic (info))
5722 info->flags |= DF_STATIC_TLS;
5727 case R_PPC64_ADDR64:
5728 if (opd_sym_map != NULL
5729 && rel + 1 < rel_end
5730 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5734 if (h->root.root.string[0] == '.'
5735 && h->root.root.string[1] != 0
5736 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5739 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5744 Elf_Internal_Sym *isym;
5746 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5751 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5752 if (s != NULL && s != sec)
5753 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5758 case R_PPC64_ADDR16:
5759 case R_PPC64_ADDR16_DS:
5760 case R_PPC64_ADDR16_HA:
5761 case R_PPC64_ADDR16_HI:
5762 case R_PPC64_ADDR16_HIGH:
5763 case R_PPC64_ADDR16_HIGHA:
5764 case R_PPC64_ADDR16_HIGHER:
5765 case R_PPC64_ADDR16_HIGHERA:
5766 case R_PPC64_ADDR16_HIGHEST:
5767 case R_PPC64_ADDR16_HIGHESTA:
5768 case R_PPC64_ADDR16_LO:
5769 case R_PPC64_ADDR16_LO_DS:
5770 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5771 && rel->r_addend == 0)
5773 /* We may need a .plt entry if this reloc refers to a
5774 function in a shared lib. */
5775 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5777 h->pointer_equality_needed = 1;
5784 case R_PPC64_ADDR14:
5785 case R_PPC64_ADDR14_BRNTAKEN:
5786 case R_PPC64_ADDR14_BRTAKEN:
5787 case R_PPC64_ADDR24:
5788 case R_PPC64_ADDR32:
5789 case R_PPC64_UADDR16:
5790 case R_PPC64_UADDR32:
5791 case R_PPC64_UADDR64:
5793 if (h != NULL && !bfd_link_pic (info))
5794 /* We may need a copy reloc. */
5797 /* Don't propagate .opd relocs. */
5798 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5801 /* If we are creating a shared library, and this is a reloc
5802 against a global symbol, or a non PC relative reloc
5803 against a local symbol, then we need to copy the reloc
5804 into the shared library. However, if we are linking with
5805 -Bsymbolic, we do not need to copy a reloc against a
5806 global symbol which is defined in an object we are
5807 including in the link (i.e., DEF_REGULAR is set). At
5808 this point we have not seen all the input files, so it is
5809 possible that DEF_REGULAR is not set now but will be set
5810 later (it is never cleared). In case of a weak definition,
5811 DEF_REGULAR may be cleared later by a strong definition in
5812 a shared library. We account for that possibility below by
5813 storing information in the dyn_relocs field of the hash
5814 table entry. A similar situation occurs when creating
5815 shared libraries and symbol visibility changes render the
5818 If on the other hand, we are creating an executable, we
5819 may need to keep relocations for symbols satisfied by a
5820 dynamic library if we manage to avoid copy relocs for the
5823 if ((bfd_link_pic (info)
5824 && (must_be_dyn_reloc (info, r_type)
5826 && (!SYMBOLIC_BIND (info, h)
5827 || h->root.type == bfd_link_hash_defweak
5828 || !h->def_regular))))
5829 || (ELIMINATE_COPY_RELOCS
5830 && !bfd_link_pic (info)
5832 && (h->root.type == bfd_link_hash_defweak
5833 || !h->def_regular))
5834 || (!bfd_link_pic (info)
5837 /* We must copy these reloc types into the output file.
5838 Create a reloc section in dynobj and make room for
5842 sreloc = _bfd_elf_make_dynamic_reloc_section
5843 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5849 /* If this is a global symbol, we count the number of
5850 relocations we need for this symbol. */
5853 struct elf_dyn_relocs *p;
5854 struct elf_dyn_relocs **head;
5856 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5858 if (p == NULL || p->sec != sec)
5860 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5870 if (!must_be_dyn_reloc (info, r_type))
5875 /* Track dynamic relocs needed for local syms too.
5876 We really need local syms available to do this
5878 struct ppc_dyn_relocs *p;
5879 struct ppc_dyn_relocs **head;
5880 bfd_boolean is_ifunc;
5883 Elf_Internal_Sym *isym;
5885 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5890 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5894 vpp = &elf_section_data (s)->local_dynrel;
5895 head = (struct ppc_dyn_relocs **) vpp;
5896 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5898 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5900 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5902 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5908 p->ifunc = is_ifunc;
5924 /* Merge backend specific data from an object file to the output
5925 object file when linking. */
5928 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5930 unsigned long iflags, oflags;
5932 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5935 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5938 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5941 iflags = elf_elfheader (ibfd)->e_flags;
5942 oflags = elf_elfheader (obfd)->e_flags;
5944 if (iflags & ~EF_PPC64_ABI)
5946 (*_bfd_error_handler)
5947 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5948 bfd_set_error (bfd_error_bad_value);
5951 else if (iflags != oflags && iflags != 0)
5953 (*_bfd_error_handler)
5954 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5955 ibfd, iflags, oflags);
5956 bfd_set_error (bfd_error_bad_value);
5960 /* Merge Tag_compatibility attributes and any common GNU ones. */
5961 _bfd_elf_merge_object_attributes (ibfd, obfd);
5967 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5969 /* Print normal ELF private data. */
5970 _bfd_elf_print_private_bfd_data (abfd, ptr);
5972 if (elf_elfheader (abfd)->e_flags != 0)
5976 /* xgettext:c-format */
5977 fprintf (file, _("private flags = 0x%lx:"),
5978 elf_elfheader (abfd)->e_flags);
5980 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5981 fprintf (file, _(" [abiv%ld]"),
5982 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5989 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5990 of the code entry point, and its section, which must be in the same
5991 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5994 opd_entry_value (asection *opd_sec,
5996 asection **code_sec,
5998 bfd_boolean in_code_sec)
6000 bfd *opd_bfd = opd_sec->owner;
6001 Elf_Internal_Rela *relocs;
6002 Elf_Internal_Rela *lo, *hi, *look;
6005 /* No relocs implies we are linking a --just-symbols object, or looking
6006 at a final linked executable with addr2line or somesuch. */
6007 if (opd_sec->reloc_count == 0)
6009 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6011 if (contents == NULL)
6013 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6014 return (bfd_vma) -1;
6015 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6018 /* PR 17512: file: 64b9dfbb. */
6019 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6020 return (bfd_vma) -1;
6022 val = bfd_get_64 (opd_bfd, contents + offset);
6023 if (code_sec != NULL)
6025 asection *sec, *likely = NULL;
6031 && val < sec->vma + sec->size)
6037 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6039 && (sec->flags & SEC_LOAD) != 0
6040 && (sec->flags & SEC_ALLOC) != 0)
6045 if (code_off != NULL)
6046 *code_off = val - likely->vma;
6052 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6054 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6056 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6057 /* PR 17512: file: df8e1fd6. */
6059 return (bfd_vma) -1;
6061 /* Go find the opd reloc at the sym address. */
6063 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6067 look = lo + (hi - lo) / 2;
6068 if (look->r_offset < offset)
6070 else if (look->r_offset > offset)
6074 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6076 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6077 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6079 unsigned long symndx = ELF64_R_SYM (look->r_info);
6080 asection *sec = NULL;
6082 if (symndx >= symtab_hdr->sh_info
6083 && elf_sym_hashes (opd_bfd) != NULL)
6085 struct elf_link_hash_entry **sym_hashes;
6086 struct elf_link_hash_entry *rh;
6088 sym_hashes = elf_sym_hashes (opd_bfd);
6089 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6092 rh = elf_follow_link (rh);
6093 if (rh->root.type != bfd_link_hash_defined
6094 && rh->root.type != bfd_link_hash_defweak)
6096 if (rh->root.u.def.section->owner == opd_bfd)
6098 val = rh->root.u.def.value;
6099 sec = rh->root.u.def.section;
6106 Elf_Internal_Sym *sym;
6108 if (symndx < symtab_hdr->sh_info)
6110 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6113 size_t symcnt = symtab_hdr->sh_info;
6114 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6119 symtab_hdr->contents = (bfd_byte *) sym;
6125 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6131 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6134 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6135 val = sym->st_value;
6138 val += look->r_addend;
6139 if (code_off != NULL)
6141 if (code_sec != NULL)
6143 if (in_code_sec && *code_sec != sec)
6148 if (sec->output_section != NULL)
6149 val += sec->output_section->vma + sec->output_offset;
6158 /* If the ELF symbol SYM might be a function in SEC, return the
6159 function size and set *CODE_OFF to the function's entry point,
6160 otherwise return zero. */
6162 static bfd_size_type
6163 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6168 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6169 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6173 if (!(sym->flags & BSF_SYNTHETIC))
6174 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6176 if (strcmp (sym->section->name, ".opd") == 0)
6178 struct _opd_sec_data *opd = get_opd_info (sym->section);
6179 bfd_vma symval = sym->value;
6182 && opd->adjust != NULL
6183 && elf_section_data (sym->section)->relocs != NULL)
6185 /* opd_entry_value will use cached relocs that have been
6186 adjusted, but with raw symbols. That means both local
6187 and global symbols need adjusting. */
6188 long adjust = opd->adjust[OPD_NDX (symval)];
6194 if (opd_entry_value (sym->section, symval,
6195 &sec, code_off, TRUE) == (bfd_vma) -1)
6197 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6198 symbol. This size has nothing to do with the code size of the
6199 function, which is what we're supposed to return, but the
6200 code size isn't available without looking up the dot-sym.
6201 However, doing that would be a waste of time particularly
6202 since elf_find_function will look at the dot-sym anyway.
6203 Now, elf_find_function will keep the largest size of any
6204 function sym found at the code address of interest, so return
6205 1 here to avoid it incorrectly caching a larger function size
6206 for a small function. This does mean we return the wrong
6207 size for a new-ABI function of size 24, but all that does is
6208 disable caching for such functions. */
6214 if (sym->section != sec)
6216 *code_off = sym->value;
6223 /* Return true if symbol is defined in a regular object file. */
6226 is_static_defined (struct elf_link_hash_entry *h)
6228 return ((h->root.type == bfd_link_hash_defined
6229 || h->root.type == bfd_link_hash_defweak)
6230 && h->root.u.def.section != NULL
6231 && h->root.u.def.section->output_section != NULL);
6234 /* If FDH is a function descriptor symbol, return the associated code
6235 entry symbol if it is defined. Return NULL otherwise. */
6237 static struct ppc_link_hash_entry *
6238 defined_code_entry (struct ppc_link_hash_entry *fdh)
6240 if (fdh->is_func_descriptor)
6242 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6243 if (fh->elf.root.type == bfd_link_hash_defined
6244 || fh->elf.root.type == bfd_link_hash_defweak)
6250 /* If FH is a function code entry symbol, return the associated
6251 function descriptor symbol if it is defined. Return NULL otherwise. */
6253 static struct ppc_link_hash_entry *
6254 defined_func_desc (struct ppc_link_hash_entry *fh)
6257 && fh->oh->is_func_descriptor)
6259 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6260 if (fdh->elf.root.type == bfd_link_hash_defined
6261 || fdh->elf.root.type == bfd_link_hash_defweak)
6267 /* Mark all our entry sym sections, both opd and code section. */
6270 ppc64_elf_gc_keep (struct bfd_link_info *info)
6272 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6273 struct bfd_sym_chain *sym;
6278 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6280 struct ppc_link_hash_entry *eh, *fh;
6283 eh = (struct ppc_link_hash_entry *)
6284 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6287 if (eh->elf.root.type != bfd_link_hash_defined
6288 && eh->elf.root.type != bfd_link_hash_defweak)
6291 fh = defined_code_entry (eh);
6294 sec = fh->elf.root.u.def.section;
6295 sec->flags |= SEC_KEEP;
6297 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6298 && opd_entry_value (eh->elf.root.u.def.section,
6299 eh->elf.root.u.def.value,
6300 &sec, NULL, FALSE) != (bfd_vma) -1)
6301 sec->flags |= SEC_KEEP;
6303 sec = eh->elf.root.u.def.section;
6304 sec->flags |= SEC_KEEP;
6308 /* Mark sections containing dynamically referenced symbols. When
6309 building shared libraries, we must assume that any visible symbol is
6313 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6315 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6316 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6317 struct ppc_link_hash_entry *fdh;
6318 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6320 /* Dynamic linking info is on the func descriptor sym. */
6321 fdh = defined_func_desc (eh);
6325 if ((eh->elf.root.type == bfd_link_hash_defined
6326 || eh->elf.root.type == bfd_link_hash_defweak)
6327 && (eh->elf.ref_dynamic
6328 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6329 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6330 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6331 && (!bfd_link_executable (info)
6332 || info->export_dynamic
6335 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6336 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6337 || !bfd_hide_sym_by_version (info->version_info,
6338 eh->elf.root.root.string)))))
6341 struct ppc_link_hash_entry *fh;
6343 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6345 /* Function descriptor syms cause the associated
6346 function code sym section to be marked. */
6347 fh = defined_code_entry (eh);
6350 code_sec = fh->elf.root.u.def.section;
6351 code_sec->flags |= SEC_KEEP;
6353 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6354 && opd_entry_value (eh->elf.root.u.def.section,
6355 eh->elf.root.u.def.value,
6356 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6357 code_sec->flags |= SEC_KEEP;
6363 /* Return the section that should be marked against GC for a given
6367 ppc64_elf_gc_mark_hook (asection *sec,
6368 struct bfd_link_info *info,
6369 Elf_Internal_Rela *rel,
6370 struct elf_link_hash_entry *h,
6371 Elf_Internal_Sym *sym)
6375 /* Syms return NULL if we're marking .opd, so we avoid marking all
6376 function sections, as all functions are referenced in .opd. */
6378 if (get_opd_info (sec) != NULL)
6383 enum elf_ppc64_reloc_type r_type;
6384 struct ppc_link_hash_entry *eh, *fh, *fdh;
6386 r_type = ELF64_R_TYPE (rel->r_info);
6389 case R_PPC64_GNU_VTINHERIT:
6390 case R_PPC64_GNU_VTENTRY:
6394 switch (h->root.type)
6396 case bfd_link_hash_defined:
6397 case bfd_link_hash_defweak:
6398 eh = (struct ppc_link_hash_entry *) h;
6399 fdh = defined_func_desc (eh);
6403 /* Function descriptor syms cause the associated
6404 function code sym section to be marked. */
6405 fh = defined_code_entry (eh);
6408 /* They also mark their opd section. */
6409 eh->elf.root.u.def.section->gc_mark = 1;
6411 rsec = fh->elf.root.u.def.section;
6413 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6414 && opd_entry_value (eh->elf.root.u.def.section,
6415 eh->elf.root.u.def.value,
6416 &rsec, NULL, FALSE) != (bfd_vma) -1)
6417 eh->elf.root.u.def.section->gc_mark = 1;
6419 rsec = h->root.u.def.section;
6422 case bfd_link_hash_common:
6423 rsec = h->root.u.c.p->section;
6427 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6433 struct _opd_sec_data *opd;
6435 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6436 opd = get_opd_info (rsec);
6437 if (opd != NULL && opd->func_sec != NULL)
6441 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6448 /* Update the .got, .plt. and dynamic reloc reference counts for the
6449 section being removed. */
6452 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6453 asection *sec, const Elf_Internal_Rela *relocs)
6455 struct ppc_link_hash_table *htab;
6456 Elf_Internal_Shdr *symtab_hdr;
6457 struct elf_link_hash_entry **sym_hashes;
6458 struct got_entry **local_got_ents;
6459 const Elf_Internal_Rela *rel, *relend;
6461 if (bfd_link_relocatable (info))
6464 if ((sec->flags & SEC_ALLOC) == 0)
6467 elf_section_data (sec)->local_dynrel = NULL;
6469 htab = ppc_hash_table (info);
6473 symtab_hdr = &elf_symtab_hdr (abfd);
6474 sym_hashes = elf_sym_hashes (abfd);
6475 local_got_ents = elf_local_got_ents (abfd);
6477 relend = relocs + sec->reloc_count;
6478 for (rel = relocs; rel < relend; rel++)
6480 unsigned long r_symndx;
6481 enum elf_ppc64_reloc_type r_type;
6482 struct elf_link_hash_entry *h = NULL;
6483 unsigned char tls_type = 0;
6485 r_symndx = ELF64_R_SYM (rel->r_info);
6486 r_type = ELF64_R_TYPE (rel->r_info);
6487 if (r_symndx >= symtab_hdr->sh_info)
6489 struct ppc_link_hash_entry *eh;
6490 struct elf_dyn_relocs **pp;
6491 struct elf_dyn_relocs *p;
6493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6494 h = elf_follow_link (h);
6495 eh = (struct ppc_link_hash_entry *) h;
6497 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6500 /* Everything must go for SEC. */
6506 if (is_branch_reloc (r_type))
6508 struct plt_entry **ifunc = NULL;
6511 if (h->type == STT_GNU_IFUNC)
6512 ifunc = &h->plt.plist;
6514 else if (local_got_ents != NULL)
6516 struct plt_entry **local_plt = (struct plt_entry **)
6517 (local_got_ents + symtab_hdr->sh_info);
6518 unsigned char *local_got_tls_masks = (unsigned char *)
6519 (local_plt + symtab_hdr->sh_info);
6520 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6521 ifunc = local_plt + r_symndx;
6525 struct plt_entry *ent;
6527 for (ent = *ifunc; ent != NULL; ent = ent->next)
6528 if (ent->addend == rel->r_addend)
6532 if (ent->plt.refcount > 0)
6533 ent->plt.refcount -= 1;
6540 case R_PPC64_GOT_TLSLD16:
6541 case R_PPC64_GOT_TLSLD16_LO:
6542 case R_PPC64_GOT_TLSLD16_HI:
6543 case R_PPC64_GOT_TLSLD16_HA:
6544 tls_type = TLS_TLS | TLS_LD;
6547 case R_PPC64_GOT_TLSGD16:
6548 case R_PPC64_GOT_TLSGD16_LO:
6549 case R_PPC64_GOT_TLSGD16_HI:
6550 case R_PPC64_GOT_TLSGD16_HA:
6551 tls_type = TLS_TLS | TLS_GD;
6554 case R_PPC64_GOT_TPREL16_DS:
6555 case R_PPC64_GOT_TPREL16_LO_DS:
6556 case R_PPC64_GOT_TPREL16_HI:
6557 case R_PPC64_GOT_TPREL16_HA:
6558 tls_type = TLS_TLS | TLS_TPREL;
6561 case R_PPC64_GOT_DTPREL16_DS:
6562 case R_PPC64_GOT_DTPREL16_LO_DS:
6563 case R_PPC64_GOT_DTPREL16_HI:
6564 case R_PPC64_GOT_DTPREL16_HA:
6565 tls_type = TLS_TLS | TLS_DTPREL;
6569 case R_PPC64_GOT16_DS:
6570 case R_PPC64_GOT16_HA:
6571 case R_PPC64_GOT16_HI:
6572 case R_PPC64_GOT16_LO:
6573 case R_PPC64_GOT16_LO_DS:
6576 struct got_entry *ent;
6581 ent = local_got_ents[r_symndx];
6583 for (; ent != NULL; ent = ent->next)
6584 if (ent->addend == rel->r_addend
6585 && ent->owner == abfd
6586 && ent->tls_type == tls_type)
6590 if (ent->got.refcount > 0)
6591 ent->got.refcount -= 1;
6595 case R_PPC64_PLT16_HA:
6596 case R_PPC64_PLT16_HI:
6597 case R_PPC64_PLT16_LO:
6601 case R_PPC64_REL14_BRNTAKEN:
6602 case R_PPC64_REL14_BRTAKEN:
6606 struct plt_entry *ent;
6608 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6609 if (ent->addend == rel->r_addend)
6611 if (ent != NULL && ent->plt.refcount > 0)
6612 ent->plt.refcount -= 1;
6623 /* The maximum size of .sfpr. */
6624 #define SFPR_MAX (218*4)
6626 struct sfpr_def_parms
6628 const char name[12];
6629 unsigned char lo, hi;
6630 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6631 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6634 /* Auto-generate _save*, _rest* functions in .sfpr.
6635 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6639 sfpr_define (struct bfd_link_info *info,
6640 const struct sfpr_def_parms *parm,
6643 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6645 size_t len = strlen (parm->name);
6646 bfd_boolean writing = FALSE;
6652 memcpy (sym, parm->name, len);
6655 for (i = parm->lo; i <= parm->hi; i++)
6657 struct ppc_link_hash_entry *h;
6659 sym[len + 0] = i / 10 + '0';
6660 sym[len + 1] = i % 10 + '0';
6661 h = (struct ppc_link_hash_entry *)
6662 elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6663 if (stub_sec != NULL)
6666 && h->elf.root.type == bfd_link_hash_defined
6667 && h->elf.root.u.def.section == htab->sfpr)
6669 struct elf_link_hash_entry *s;
6671 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6672 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6675 if (s->root.type == bfd_link_hash_new
6676 || (s->root.type = bfd_link_hash_defined
6677 && s->root.u.def.section == stub_sec))
6679 s->root.type = bfd_link_hash_defined;
6680 s->root.u.def.section = stub_sec;
6681 s->root.u.def.value = (stub_sec->size
6682 + h->elf.root.u.def.value);
6685 s->ref_regular_nonweak = 1;
6686 s->forced_local = 1;
6688 s->root.linker_def = 1;
6696 if (!h->elf.def_regular)
6698 h->elf.root.type = bfd_link_hash_defined;
6699 h->elf.root.u.def.section = htab->sfpr;
6700 h->elf.root.u.def.value = htab->sfpr->size;
6701 h->elf.type = STT_FUNC;
6702 h->elf.def_regular = 1;
6703 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6705 if (htab->sfpr->contents == NULL)
6707 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6708 if (htab->sfpr->contents == NULL)
6715 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6717 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6719 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6720 htab->sfpr->size = p - htab->sfpr->contents;
6728 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6730 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6735 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6737 p = savegpr0 (abfd, p, r);
6738 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6740 bfd_put_32 (abfd, BLR, p);
6745 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6747 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6752 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6754 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6756 p = restgpr0 (abfd, p, r);
6757 bfd_put_32 (abfd, MTLR_R0, p);
6761 p = restgpr0 (abfd, p, 30);
6762 p = restgpr0 (abfd, p, 31);
6764 bfd_put_32 (abfd, BLR, p);
6769 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6771 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6776 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6778 p = savegpr1 (abfd, p, r);
6779 bfd_put_32 (abfd, BLR, p);
6784 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6786 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6791 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6793 p = restgpr1 (abfd, p, r);
6794 bfd_put_32 (abfd, BLR, p);
6799 savefpr (bfd *abfd, bfd_byte *p, int r)
6801 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6806 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6808 p = savefpr (abfd, p, r);
6809 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6811 bfd_put_32 (abfd, BLR, p);
6816 restfpr (bfd *abfd, bfd_byte *p, int r)
6818 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6823 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6825 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6827 p = restfpr (abfd, p, r);
6828 bfd_put_32 (abfd, MTLR_R0, p);
6832 p = restfpr (abfd, p, 30);
6833 p = restfpr (abfd, p, 31);
6835 bfd_put_32 (abfd, BLR, p);
6840 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6842 p = savefpr (abfd, p, r);
6843 bfd_put_32 (abfd, BLR, p);
6848 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6850 p = restfpr (abfd, p, r);
6851 bfd_put_32 (abfd, BLR, p);
6856 savevr (bfd *abfd, bfd_byte *p, int r)
6858 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6860 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6865 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6867 p = savevr (abfd, p, r);
6868 bfd_put_32 (abfd, BLR, p);
6873 restvr (bfd *abfd, bfd_byte *p, int r)
6875 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6877 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6882 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6884 p = restvr (abfd, p, r);
6885 bfd_put_32 (abfd, BLR, p);
6889 /* Called via elf_link_hash_traverse to transfer dynamic linking
6890 information on function code symbol entries to their corresponding
6891 function descriptor symbol entries. */
6894 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6896 struct bfd_link_info *info;
6897 struct ppc_link_hash_table *htab;
6898 struct plt_entry *ent;
6899 struct ppc_link_hash_entry *fh;
6900 struct ppc_link_hash_entry *fdh;
6901 bfd_boolean force_local;
6903 fh = (struct ppc_link_hash_entry *) h;
6904 if (fh->elf.root.type == bfd_link_hash_indirect)
6908 htab = ppc_hash_table (info);
6912 /* Resolve undefined references to dot-symbols as the value
6913 in the function descriptor, if we have one in a regular object.
6914 This is to satisfy cases like ".quad .foo". Calls to functions
6915 in dynamic objects are handled elsewhere. */
6916 if (fh->elf.root.type == bfd_link_hash_undefweak
6917 && fh->was_undefined
6918 && (fdh = defined_func_desc (fh)) != NULL
6919 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6920 && opd_entry_value (fdh->elf.root.u.def.section,
6921 fdh->elf.root.u.def.value,
6922 &fh->elf.root.u.def.section,
6923 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6925 fh->elf.root.type = fdh->elf.root.type;
6926 fh->elf.forced_local = 1;
6927 fh->elf.def_regular = fdh->elf.def_regular;
6928 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6931 /* If this is a function code symbol, transfer dynamic linking
6932 information to the function descriptor symbol. */
6936 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6937 if (ent->plt.refcount > 0)
6940 || fh->elf.root.root.string[0] != '.'
6941 || fh->elf.root.root.string[1] == '\0')
6944 /* Find the corresponding function descriptor symbol. Create it
6945 as undefined if necessary. */
6947 fdh = lookup_fdh (fh, htab);
6949 && !bfd_link_executable (info)
6950 && (fh->elf.root.type == bfd_link_hash_undefined
6951 || fh->elf.root.type == bfd_link_hash_undefweak))
6953 fdh = make_fdh (info, fh);
6958 /* Fake function descriptors are made undefweak. If the function
6959 code symbol is strong undefined, make the fake sym the same.
6960 If the function code symbol is defined, then force the fake
6961 descriptor local; We can't support overriding of symbols in a
6962 shared library on a fake descriptor. */
6966 && fdh->elf.root.type == bfd_link_hash_undefweak)
6968 if (fh->elf.root.type == bfd_link_hash_undefined)
6970 fdh->elf.root.type = bfd_link_hash_undefined;
6971 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6973 else if (fh->elf.root.type == bfd_link_hash_defined
6974 || fh->elf.root.type == bfd_link_hash_defweak)
6976 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6981 && !fdh->elf.forced_local
6982 && (!bfd_link_executable (info)
6983 || fdh->elf.def_dynamic
6984 || fdh->elf.ref_dynamic
6985 || (fdh->elf.root.type == bfd_link_hash_undefweak
6986 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6988 if (fdh->elf.dynindx == -1)
6989 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6991 fdh->elf.ref_regular |= fh->elf.ref_regular;
6992 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6993 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6994 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6995 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6997 move_plt_plist (fh, fdh);
6998 fdh->elf.needs_plt = 1;
7000 fdh->is_func_descriptor = 1;
7005 /* Now that the info is on the function descriptor, clear the
7006 function code sym info. Any function code syms for which we
7007 don't have a definition in a regular file, we force local.
7008 This prevents a shared library from exporting syms that have
7009 been imported from another library. Function code syms that
7010 are really in the library we must leave global to prevent the
7011 linker dragging in a definition from a static library. */
7012 force_local = (!fh->elf.def_regular
7014 || !fdh->elf.def_regular
7015 || fdh->elf.forced_local);
7016 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7021 static const struct sfpr_def_parms save_res_funcs[] =
7023 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7024 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7025 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7026 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7027 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7028 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7029 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7030 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7031 { "._savef", 14, 31, savefpr, savefpr1_tail },
7032 { "._restf", 14, 31, restfpr, restfpr1_tail },
7033 { "_savevr_", 20, 31, savevr, savevr_tail },
7034 { "_restvr_", 20, 31, restvr, restvr_tail }
7037 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7038 this hook to a) provide some gcc support functions, and b) transfer
7039 dynamic linking information gathered so far on function code symbol
7040 entries, to their corresponding function descriptor symbol entries. */
7043 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7044 struct bfd_link_info *info)
7046 struct ppc_link_hash_table *htab;
7049 htab = ppc_hash_table (info);
7053 if (!bfd_link_relocatable (info)
7054 && htab->elf.hgot != NULL)
7056 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7057 /* Make .TOC. defined so as to prevent it being made dynamic.
7058 The wrong value here is fixed later in ppc64_elf_set_toc. */
7059 if (!htab->elf.hgot->def_regular
7060 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7062 htab->elf.hgot->root.type = bfd_link_hash_defined;
7063 htab->elf.hgot->root.u.def.value = 0;
7064 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7065 htab->elf.hgot->def_regular = 1;
7066 htab->elf.hgot->root.linker_def = 1;
7068 htab->elf.hgot->type = STT_OBJECT;
7069 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7073 if (htab->sfpr == NULL)
7074 /* We don't have any relocs. */
7077 /* Provide any missing _save* and _rest* functions. */
7078 htab->sfpr->size = 0;
7079 if (htab->params->save_restore_funcs)
7080 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7081 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7084 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7086 if (htab->sfpr->size == 0)
7087 htab->sfpr->flags |= SEC_EXCLUDE;
7092 /* Return true if we have dynamic relocs that apply to read-only sections. */
7095 readonly_dynrelocs (struct elf_link_hash_entry *h)
7097 struct ppc_link_hash_entry *eh;
7098 struct elf_dyn_relocs *p;
7100 eh = (struct ppc_link_hash_entry *) h;
7101 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7103 asection *s = p->sec->output_section;
7105 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7111 /* Adjust a symbol defined by a dynamic object and referenced by a
7112 regular object. The current definition is in some section of the
7113 dynamic object, but we're not including those sections. We have to
7114 change the definition to something the rest of the link can
7118 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7119 struct elf_link_hash_entry *h)
7121 struct ppc_link_hash_table *htab;
7124 htab = ppc_hash_table (info);
7128 /* Deal with function syms. */
7129 if (h->type == STT_FUNC
7130 || h->type == STT_GNU_IFUNC
7133 /* Clear procedure linkage table information for any symbol that
7134 won't need a .plt entry. */
7135 struct plt_entry *ent;
7136 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7137 if (ent->plt.refcount > 0)
7140 || (h->type != STT_GNU_IFUNC
7141 && (SYMBOL_CALLS_LOCAL (info, h)
7142 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7143 && h->root.type == bfd_link_hash_undefweak)))
7144 || ((struct ppc_link_hash_entry *) h)->save_res)
7146 h->plt.plist = NULL;
7148 h->pointer_equality_needed = 0;
7150 else if (abiversion (info->output_bfd) == 2)
7152 /* Taking a function's address in a read/write section
7153 doesn't require us to define the function symbol in the
7154 executable on a global entry stub. A dynamic reloc can
7156 if (h->pointer_equality_needed
7157 && h->type != STT_GNU_IFUNC
7158 && !readonly_dynrelocs (h))
7160 h->pointer_equality_needed = 0;
7164 /* After adjust_dynamic_symbol, non_got_ref set in the
7165 non-shared case means that we have allocated space in
7166 .dynbss for the symbol and thus dyn_relocs for this
7167 symbol should be discarded.
7168 If we get here we know we are making a PLT entry for this
7169 symbol, and in an executable we'd normally resolve
7170 relocations against this symbol to the PLT entry. Allow
7171 dynamic relocs if the reference is weak, and the dynamic
7172 relocs will not cause text relocation. */
7173 else if (!h->ref_regular_nonweak
7175 && h->type != STT_GNU_IFUNC
7176 && !readonly_dynrelocs (h))
7179 /* If making a plt entry, then we don't need copy relocs. */
7184 h->plt.plist = NULL;
7186 /* If this is a weak symbol, and there is a real definition, the
7187 processor independent code will have arranged for us to see the
7188 real definition first, and we can just use the same value. */
7189 if (h->u.weakdef != NULL)
7191 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7192 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7193 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7194 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7195 if (ELIMINATE_COPY_RELOCS)
7196 h->non_got_ref = h->u.weakdef->non_got_ref;
7200 /* If we are creating a shared library, we must presume that the
7201 only references to the symbol are via the global offset table.
7202 For such cases we need not do anything here; the relocations will
7203 be handled correctly by relocate_section. */
7204 if (bfd_link_pic (info))
7207 /* If there are no references to this symbol that do not use the
7208 GOT, we don't need to generate a copy reloc. */
7209 if (!h->non_got_ref)
7212 /* Don't generate a copy reloc for symbols defined in the executable. */
7213 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7216 /* If -z nocopyreloc was given, don't generate them either. */
7217 if (info->nocopyreloc)
7223 /* If we didn't find any dynamic relocs in read-only sections, then
7224 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7225 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7231 /* Protected variables do not work with .dynbss. The copy in
7232 .dynbss won't be used by the shared library with the protected
7233 definition for the variable. Text relocations are preferable
7234 to an incorrect program. */
7235 if (h->protected_def)
7241 if (h->plt.plist != NULL)
7243 /* We should never get here, but unfortunately there are versions
7244 of gcc out there that improperly (for this ABI) put initialized
7245 function pointers, vtable refs and suchlike in read-only
7246 sections. Allow them to proceed, but warn that this might
7247 break at runtime. */
7248 info->callbacks->einfo
7249 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7250 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7251 h->root.root.string);
7254 /* This is a reference to a symbol defined by a dynamic object which
7255 is not a function. */
7257 /* We must allocate the symbol in our .dynbss section, which will
7258 become part of the .bss section of the executable. There will be
7259 an entry for this symbol in the .dynsym section. The dynamic
7260 object will contain position independent code, so all references
7261 from the dynamic object to this symbol will go through the global
7262 offset table. The dynamic linker will use the .dynsym entry to
7263 determine the address it must put in the global offset table, so
7264 both the dynamic object and the regular object will refer to the
7265 same memory location for the variable. */
7267 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7268 to copy the initial value out of the dynamic object and into the
7269 runtime process image. We need to remember the offset into the
7270 .rela.bss section we are going to use. */
7271 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7273 htab->relbss->size += sizeof (Elf64_External_Rela);
7279 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7282 /* If given a function descriptor symbol, hide both the function code
7283 sym and the descriptor. */
7285 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7286 struct elf_link_hash_entry *h,
7287 bfd_boolean force_local)
7289 struct ppc_link_hash_entry *eh;
7290 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7292 eh = (struct ppc_link_hash_entry *) h;
7293 if (eh->is_func_descriptor)
7295 struct ppc_link_hash_entry *fh = eh->oh;
7300 struct ppc_link_hash_table *htab;
7303 /* We aren't supposed to use alloca in BFD because on
7304 systems which do not have alloca the version in libiberty
7305 calls xmalloc, which might cause the program to crash
7306 when it runs out of memory. This function doesn't have a
7307 return status, so there's no way to gracefully return an
7308 error. So cheat. We know that string[-1] can be safely
7309 accessed; It's either a string in an ELF string table,
7310 or allocated in an objalloc structure. */
7312 p = eh->elf.root.root.string - 1;
7315 htab = ppc_hash_table (info);
7319 fh = (struct ppc_link_hash_entry *)
7320 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7323 /* Unfortunately, if it so happens that the string we were
7324 looking for was allocated immediately before this string,
7325 then we overwrote the string terminator. That's the only
7326 reason the lookup should fail. */
7329 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7330 while (q >= eh->elf.root.root.string && *q == *p)
7332 if (q < eh->elf.root.root.string && *p == '.')
7333 fh = (struct ppc_link_hash_entry *)
7334 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7343 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7348 get_sym_h (struct elf_link_hash_entry **hp,
7349 Elf_Internal_Sym **symp,
7351 unsigned char **tls_maskp,
7352 Elf_Internal_Sym **locsymsp,
7353 unsigned long r_symndx,
7356 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7358 if (r_symndx >= symtab_hdr->sh_info)
7360 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7361 struct elf_link_hash_entry *h;
7363 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7364 h = elf_follow_link (h);
7372 if (symsecp != NULL)
7374 asection *symsec = NULL;
7375 if (h->root.type == bfd_link_hash_defined
7376 || h->root.type == bfd_link_hash_defweak)
7377 symsec = h->root.u.def.section;
7381 if (tls_maskp != NULL)
7383 struct ppc_link_hash_entry *eh;
7385 eh = (struct ppc_link_hash_entry *) h;
7386 *tls_maskp = &eh->tls_mask;
7391 Elf_Internal_Sym *sym;
7392 Elf_Internal_Sym *locsyms = *locsymsp;
7394 if (locsyms == NULL)
7396 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7397 if (locsyms == NULL)
7398 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7399 symtab_hdr->sh_info,
7400 0, NULL, NULL, NULL);
7401 if (locsyms == NULL)
7403 *locsymsp = locsyms;
7405 sym = locsyms + r_symndx;
7413 if (symsecp != NULL)
7414 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7416 if (tls_maskp != NULL)
7418 struct got_entry **lgot_ents;
7419 unsigned char *tls_mask;
7422 lgot_ents = elf_local_got_ents (ibfd);
7423 if (lgot_ents != NULL)
7425 struct plt_entry **local_plt = (struct plt_entry **)
7426 (lgot_ents + symtab_hdr->sh_info);
7427 unsigned char *lgot_masks = (unsigned char *)
7428 (local_plt + symtab_hdr->sh_info);
7429 tls_mask = &lgot_masks[r_symndx];
7431 *tls_maskp = tls_mask;
7437 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7438 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7439 type suitable for optimization, and 1 otherwise. */
7442 get_tls_mask (unsigned char **tls_maskp,
7443 unsigned long *toc_symndx,
7444 bfd_vma *toc_addend,
7445 Elf_Internal_Sym **locsymsp,
7446 const Elf_Internal_Rela *rel,
7449 unsigned long r_symndx;
7451 struct elf_link_hash_entry *h;
7452 Elf_Internal_Sym *sym;
7456 r_symndx = ELF64_R_SYM (rel->r_info);
7457 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7460 if ((*tls_maskp != NULL && **tls_maskp != 0)
7462 || ppc64_elf_section_data (sec) == NULL
7463 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7466 /* Look inside a TOC section too. */
7469 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7470 off = h->root.u.def.value;
7473 off = sym->st_value;
7474 off += rel->r_addend;
7475 BFD_ASSERT (off % 8 == 0);
7476 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7477 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7478 if (toc_symndx != NULL)
7479 *toc_symndx = r_symndx;
7480 if (toc_addend != NULL)
7481 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7482 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7484 if ((h == NULL || is_static_defined (h))
7485 && (next_r == -1 || next_r == -2))
7490 /* Find (or create) an entry in the tocsave hash table. */
7492 static struct tocsave_entry *
7493 tocsave_find (struct ppc_link_hash_table *htab,
7494 enum insert_option insert,
7495 Elf_Internal_Sym **local_syms,
7496 const Elf_Internal_Rela *irela,
7499 unsigned long r_indx;
7500 struct elf_link_hash_entry *h;
7501 Elf_Internal_Sym *sym;
7502 struct tocsave_entry ent, *p;
7504 struct tocsave_entry **slot;
7506 r_indx = ELF64_R_SYM (irela->r_info);
7507 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7509 if (ent.sec == NULL || ent.sec->output_section == NULL)
7511 (*_bfd_error_handler)
7512 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7517 ent.offset = h->root.u.def.value;
7519 ent.offset = sym->st_value;
7520 ent.offset += irela->r_addend;
7522 hash = tocsave_htab_hash (&ent);
7523 slot = ((struct tocsave_entry **)
7524 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7530 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7539 /* Adjust all global syms defined in opd sections. In gcc generated
7540 code for the old ABI, these will already have been done. */
7543 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7545 struct ppc_link_hash_entry *eh;
7547 struct _opd_sec_data *opd;
7549 if (h->root.type == bfd_link_hash_indirect)
7552 if (h->root.type != bfd_link_hash_defined
7553 && h->root.type != bfd_link_hash_defweak)
7556 eh = (struct ppc_link_hash_entry *) h;
7557 if (eh->adjust_done)
7560 sym_sec = eh->elf.root.u.def.section;
7561 opd = get_opd_info (sym_sec);
7562 if (opd != NULL && opd->adjust != NULL)
7564 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7567 /* This entry has been deleted. */
7568 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7571 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7572 if (discarded_section (dsec))
7574 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7578 eh->elf.root.u.def.value = 0;
7579 eh->elf.root.u.def.section = dsec;
7582 eh->elf.root.u.def.value += adjust;
7583 eh->adjust_done = 1;
7588 /* Handles decrementing dynamic reloc counts for the reloc specified by
7589 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7590 have already been determined. */
7593 dec_dynrel_count (bfd_vma r_info,
7595 struct bfd_link_info *info,
7596 Elf_Internal_Sym **local_syms,
7597 struct elf_link_hash_entry *h,
7598 Elf_Internal_Sym *sym)
7600 enum elf_ppc64_reloc_type r_type;
7601 asection *sym_sec = NULL;
7603 /* Can this reloc be dynamic? This switch, and later tests here
7604 should be kept in sync with the code in check_relocs. */
7605 r_type = ELF64_R_TYPE (r_info);
7611 case R_PPC64_TPREL16:
7612 case R_PPC64_TPREL16_LO:
7613 case R_PPC64_TPREL16_HI:
7614 case R_PPC64_TPREL16_HA:
7615 case R_PPC64_TPREL16_DS:
7616 case R_PPC64_TPREL16_LO_DS:
7617 case R_PPC64_TPREL16_HIGH:
7618 case R_PPC64_TPREL16_HIGHA:
7619 case R_PPC64_TPREL16_HIGHER:
7620 case R_PPC64_TPREL16_HIGHERA:
7621 case R_PPC64_TPREL16_HIGHEST:
7622 case R_PPC64_TPREL16_HIGHESTA:
7623 if (!bfd_link_pic (info))
7626 case R_PPC64_TPREL64:
7627 case R_PPC64_DTPMOD64:
7628 case R_PPC64_DTPREL64:
7629 case R_PPC64_ADDR64:
7633 case R_PPC64_ADDR14:
7634 case R_PPC64_ADDR14_BRNTAKEN:
7635 case R_PPC64_ADDR14_BRTAKEN:
7636 case R_PPC64_ADDR16:
7637 case R_PPC64_ADDR16_DS:
7638 case R_PPC64_ADDR16_HA:
7639 case R_PPC64_ADDR16_HI:
7640 case R_PPC64_ADDR16_HIGH:
7641 case R_PPC64_ADDR16_HIGHA:
7642 case R_PPC64_ADDR16_HIGHER:
7643 case R_PPC64_ADDR16_HIGHERA:
7644 case R_PPC64_ADDR16_HIGHEST:
7645 case R_PPC64_ADDR16_HIGHESTA:
7646 case R_PPC64_ADDR16_LO:
7647 case R_PPC64_ADDR16_LO_DS:
7648 case R_PPC64_ADDR24:
7649 case R_PPC64_ADDR32:
7650 case R_PPC64_UADDR16:
7651 case R_PPC64_UADDR32:
7652 case R_PPC64_UADDR64:
7657 if (local_syms != NULL)
7659 unsigned long r_symndx;
7660 bfd *ibfd = sec->owner;
7662 r_symndx = ELF64_R_SYM (r_info);
7663 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7667 if ((bfd_link_pic (info)
7668 && (must_be_dyn_reloc (info, r_type)
7670 && (!SYMBOLIC_BIND (info, h)
7671 || h->root.type == bfd_link_hash_defweak
7672 || !h->def_regular))))
7673 || (ELIMINATE_COPY_RELOCS
7674 && !bfd_link_pic (info)
7676 && (h->root.type == bfd_link_hash_defweak
7677 || !h->def_regular)))
7684 struct elf_dyn_relocs *p;
7685 struct elf_dyn_relocs **pp;
7686 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7688 /* elf_gc_sweep may have already removed all dyn relocs associated
7689 with local syms for a given section. Also, symbol flags are
7690 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7691 report a dynreloc miscount. */
7692 if (*pp == NULL && info->gc_sections)
7695 while ((p = *pp) != NULL)
7699 if (!must_be_dyn_reloc (info, r_type))
7711 struct ppc_dyn_relocs *p;
7712 struct ppc_dyn_relocs **pp;
7714 bfd_boolean is_ifunc;
7716 if (local_syms == NULL)
7717 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7718 if (sym_sec == NULL)
7721 vpp = &elf_section_data (sym_sec)->local_dynrel;
7722 pp = (struct ppc_dyn_relocs **) vpp;
7724 if (*pp == NULL && info->gc_sections)
7727 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7728 while ((p = *pp) != NULL)
7730 if (p->sec == sec && p->ifunc == is_ifunc)
7741 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7743 bfd_set_error (bfd_error_bad_value);
7747 /* Remove unused Official Procedure Descriptor entries. Currently we
7748 only remove those associated with functions in discarded link-once
7749 sections, or weakly defined functions that have been overridden. It
7750 would be possible to remove many more entries for statically linked
7754 ppc64_elf_edit_opd (struct bfd_link_info *info)
7757 bfd_boolean some_edited = FALSE;
7758 asection *need_pad = NULL;
7759 struct ppc_link_hash_table *htab;
7761 htab = ppc_hash_table (info);
7765 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7768 Elf_Internal_Rela *relstart, *rel, *relend;
7769 Elf_Internal_Shdr *symtab_hdr;
7770 Elf_Internal_Sym *local_syms;
7771 struct _opd_sec_data *opd;
7772 bfd_boolean need_edit, add_aux_fields, broken;
7773 bfd_size_type cnt_16b = 0;
7775 if (!is_ppc64_elf (ibfd))
7778 sec = bfd_get_section_by_name (ibfd, ".opd");
7779 if (sec == NULL || sec->size == 0)
7782 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7785 if (sec->output_section == bfd_abs_section_ptr)
7788 /* Look through the section relocs. */
7789 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7793 symtab_hdr = &elf_symtab_hdr (ibfd);
7795 /* Read the relocations. */
7796 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7798 if (relstart == NULL)
7801 /* First run through the relocs to check they are sane, and to
7802 determine whether we need to edit this opd section. */
7806 relend = relstart + sec->reloc_count;
7807 for (rel = relstart; rel < relend; )
7809 enum elf_ppc64_reloc_type r_type;
7810 unsigned long r_symndx;
7812 struct elf_link_hash_entry *h;
7813 Elf_Internal_Sym *sym;
7816 /* .opd contains an array of 16 or 24 byte entries. We're
7817 only interested in the reloc pointing to a function entry
7819 offset = rel->r_offset;
7820 if (rel + 1 == relend
7821 || rel[1].r_offset != offset + 8)
7823 /* If someone messes with .opd alignment then after a
7824 "ld -r" we might have padding in the middle of .opd.
7825 Also, there's nothing to prevent someone putting
7826 something silly in .opd with the assembler. No .opd
7827 optimization for them! */
7829 (*_bfd_error_handler)
7830 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7835 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7836 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7838 (*_bfd_error_handler)
7839 (_("%B: unexpected reloc type %u in .opd section"),
7845 r_symndx = ELF64_R_SYM (rel->r_info);
7846 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7850 if (sym_sec == NULL || sym_sec->owner == NULL)
7852 const char *sym_name;
7854 sym_name = h->root.root.string;
7856 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7859 (*_bfd_error_handler)
7860 (_("%B: undefined sym `%s' in .opd section"),
7866 /* opd entries are always for functions defined in the
7867 current input bfd. If the symbol isn't defined in the
7868 input bfd, then we won't be using the function in this
7869 bfd; It must be defined in a linkonce section in another
7870 bfd, or is weak. It's also possible that we are
7871 discarding the function due to a linker script /DISCARD/,
7872 which we test for via the output_section. */
7873 if (sym_sec->owner != ibfd
7874 || sym_sec->output_section == bfd_abs_section_ptr)
7878 if (rel + 1 == relend
7879 || (rel + 2 < relend
7880 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7885 if (sec->size == offset + 24)
7890 if (sec->size == offset + 16)
7897 else if (rel + 1 < relend
7898 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7899 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7901 if (rel[0].r_offset == offset + 16)
7903 else if (rel[0].r_offset != offset + 24)
7910 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7912 if (!broken && (need_edit || add_aux_fields))
7914 Elf_Internal_Rela *write_rel;
7915 Elf_Internal_Shdr *rel_hdr;
7916 bfd_byte *rptr, *wptr;
7917 bfd_byte *new_contents;
7920 new_contents = NULL;
7921 amt = OPD_NDX (sec->size) * sizeof (long);
7922 opd = &ppc64_elf_section_data (sec)->u.opd;
7923 opd->adjust = bfd_zalloc (sec->owner, amt);
7924 if (opd->adjust == NULL)
7926 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7928 /* This seems a waste of time as input .opd sections are all
7929 zeros as generated by gcc, but I suppose there's no reason
7930 this will always be so. We might start putting something in
7931 the third word of .opd entries. */
7932 if ((sec->flags & SEC_IN_MEMORY) == 0)
7935 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7940 if (local_syms != NULL
7941 && symtab_hdr->contents != (unsigned char *) local_syms)
7943 if (elf_section_data (sec)->relocs != relstart)
7947 sec->contents = loc;
7948 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7951 elf_section_data (sec)->relocs = relstart;
7953 new_contents = sec->contents;
7956 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7957 if (new_contents == NULL)
7961 wptr = new_contents;
7962 rptr = sec->contents;
7963 write_rel = relstart;
7964 for (rel = relstart; rel < relend; )
7966 unsigned long r_symndx;
7968 struct elf_link_hash_entry *h;
7969 struct ppc_link_hash_entry *fdh = NULL;
7970 Elf_Internal_Sym *sym;
7972 Elf_Internal_Rela *next_rel;
7975 r_symndx = ELF64_R_SYM (rel->r_info);
7976 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7981 if (next_rel + 1 == relend
7982 || (next_rel + 2 < relend
7983 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7986 /* See if the .opd entry is full 24 byte or
7987 16 byte (with fd_aux entry overlapped with next
7990 if (next_rel == relend)
7992 if (sec->size == rel->r_offset + 16)
7995 else if (next_rel->r_offset == rel->r_offset + 16)
7999 && h->root.root.string[0] == '.')
8001 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8003 && fdh->elf.root.type != bfd_link_hash_defined
8004 && fdh->elf.root.type != bfd_link_hash_defweak)
8008 skip = (sym_sec->owner != ibfd
8009 || sym_sec->output_section == bfd_abs_section_ptr);
8012 if (fdh != NULL && sym_sec->owner == ibfd)
8014 /* Arrange for the function descriptor sym
8016 fdh->elf.root.u.def.value = 0;
8017 fdh->elf.root.u.def.section = sym_sec;
8019 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8021 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8026 if (!dec_dynrel_count (rel->r_info, sec, info,
8030 if (++rel == next_rel)
8033 r_symndx = ELF64_R_SYM (rel->r_info);
8034 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8041 /* We'll be keeping this opd entry. */
8046 /* Redefine the function descriptor symbol to
8047 this location in the opd section. It is
8048 necessary to update the value here rather
8049 than using an array of adjustments as we do
8050 for local symbols, because various places
8051 in the generic ELF code use the value
8052 stored in u.def.value. */
8053 fdh->elf.root.u.def.value = wptr - new_contents;
8054 fdh->adjust_done = 1;
8057 /* Local syms are a bit tricky. We could
8058 tweak them as they can be cached, but
8059 we'd need to look through the local syms
8060 for the function descriptor sym which we
8061 don't have at the moment. So keep an
8062 array of adjustments. */
8063 adjust = (wptr - new_contents) - (rptr - sec->contents);
8064 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8067 memcpy (wptr, rptr, opd_ent_size);
8068 wptr += opd_ent_size;
8069 if (add_aux_fields && opd_ent_size == 16)
8071 memset (wptr, '\0', 8);
8075 /* We need to adjust any reloc offsets to point to the
8077 for ( ; rel != next_rel; ++rel)
8079 rel->r_offset += adjust;
8080 if (write_rel != rel)
8081 memcpy (write_rel, rel, sizeof (*rel));
8086 rptr += opd_ent_size;
8089 sec->size = wptr - new_contents;
8090 sec->reloc_count = write_rel - relstart;
8093 free (sec->contents);
8094 sec->contents = new_contents;
8097 /* Fudge the header size too, as this is used later in
8098 elf_bfd_final_link if we are emitting relocs. */
8099 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8100 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8103 else if (elf_section_data (sec)->relocs != relstart)
8106 if (local_syms != NULL
8107 && symtab_hdr->contents != (unsigned char *) local_syms)
8109 if (!info->keep_memory)
8112 symtab_hdr->contents = (unsigned char *) local_syms;
8117 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8119 /* If we are doing a final link and the last .opd entry is just 16 byte
8120 long, add a 8 byte padding after it. */
8121 if (need_pad != NULL && !bfd_link_relocatable (info))
8125 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8127 BFD_ASSERT (need_pad->size > 0);
8129 p = bfd_malloc (need_pad->size + 8);
8133 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8134 p, 0, need_pad->size))
8137 need_pad->contents = p;
8138 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8142 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8146 need_pad->contents = p;
8149 memset (need_pad->contents + need_pad->size, 0, 8);
8150 need_pad->size += 8;
8156 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8159 ppc64_elf_tls_setup (struct bfd_link_info *info)
8161 struct ppc_link_hash_table *htab;
8163 htab = ppc_hash_table (info);
8167 if (abiversion (info->output_bfd) == 1)
8170 if (htab->params->no_multi_toc)
8171 htab->do_multi_toc = 0;
8172 else if (!htab->do_multi_toc)
8173 htab->params->no_multi_toc = 1;
8175 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8176 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8177 FALSE, FALSE, TRUE));
8178 /* Move dynamic linking info to the function descriptor sym. */
8179 if (htab->tls_get_addr != NULL)
8180 func_desc_adjust (&htab->tls_get_addr->elf, info);
8181 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8182 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8183 FALSE, FALSE, TRUE));
8184 if (htab->params->tls_get_addr_opt)
8186 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8188 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8189 FALSE, FALSE, TRUE);
8191 func_desc_adjust (opt, info);
8192 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8193 FALSE, FALSE, TRUE);
8195 && (opt_fd->root.type == bfd_link_hash_defined
8196 || opt_fd->root.type == bfd_link_hash_defweak))
8198 /* If glibc supports an optimized __tls_get_addr call stub,
8199 signalled by the presence of __tls_get_addr_opt, and we'll
8200 be calling __tls_get_addr via a plt call stub, then
8201 make __tls_get_addr point to __tls_get_addr_opt. */
8202 tga_fd = &htab->tls_get_addr_fd->elf;
8203 if (htab->elf.dynamic_sections_created
8205 && (tga_fd->type == STT_FUNC
8206 || tga_fd->needs_plt)
8207 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8208 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8209 && tga_fd->root.type == bfd_link_hash_undefweak)))
8211 struct plt_entry *ent;
8213 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8214 if (ent->plt.refcount > 0)
8218 tga_fd->root.type = bfd_link_hash_indirect;
8219 tga_fd->root.u.i.link = &opt_fd->root;
8220 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8221 if (opt_fd->dynindx != -1)
8223 /* Use __tls_get_addr_opt in dynamic relocations. */
8224 opt_fd->dynindx = -1;
8225 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8226 opt_fd->dynstr_index);
8227 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8230 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8231 tga = &htab->tls_get_addr->elf;
8232 if (opt != NULL && tga != NULL)
8234 tga->root.type = bfd_link_hash_indirect;
8235 tga->root.u.i.link = &opt->root;
8236 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8237 _bfd_elf_link_hash_hide_symbol (info, opt,
8239 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8241 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8242 htab->tls_get_addr_fd->is_func_descriptor = 1;
8243 if (htab->tls_get_addr != NULL)
8245 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8246 htab->tls_get_addr->is_func = 1;
8251 else if (htab->params->tls_get_addr_opt < 0)
8252 htab->params->tls_get_addr_opt = 0;
8254 return _bfd_elf_tls_setup (info->output_bfd, info);
8257 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8261 branch_reloc_hash_match (const bfd *ibfd,
8262 const Elf_Internal_Rela *rel,
8263 const struct ppc_link_hash_entry *hash1,
8264 const struct ppc_link_hash_entry *hash2)
8266 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8267 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8268 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8270 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8272 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8273 struct elf_link_hash_entry *h;
8275 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8276 h = elf_follow_link (h);
8277 if (h == &hash1->elf || h == &hash2->elf)
8283 /* Run through all the TLS relocs looking for optimization
8284 opportunities. The linker has been hacked (see ppc64elf.em) to do
8285 a preliminary section layout so that we know the TLS segment
8286 offsets. We can't optimize earlier because some optimizations need
8287 to know the tp offset, and we need to optimize before allocating
8288 dynamic relocations. */
8291 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8295 struct ppc_link_hash_table *htab;
8296 unsigned char *toc_ref;
8299 if (!bfd_link_executable (info))
8302 htab = ppc_hash_table (info);
8306 /* Make two passes over the relocs. On the first pass, mark toc
8307 entries involved with tls relocs, and check that tls relocs
8308 involved in setting up a tls_get_addr call are indeed followed by
8309 such a call. If they are not, we can't do any tls optimization.
8310 On the second pass twiddle tls_mask flags to notify
8311 relocate_section that optimization can be done, and adjust got
8312 and plt refcounts. */
8314 for (pass = 0; pass < 2; ++pass)
8315 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8317 Elf_Internal_Sym *locsyms = NULL;
8318 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8320 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8321 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8323 Elf_Internal_Rela *relstart, *rel, *relend;
8324 bfd_boolean found_tls_get_addr_arg = 0;
8326 /* Read the relocations. */
8327 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8329 if (relstart == NULL)
8335 relend = relstart + sec->reloc_count;
8336 for (rel = relstart; rel < relend; rel++)
8338 enum elf_ppc64_reloc_type r_type;
8339 unsigned long r_symndx;
8340 struct elf_link_hash_entry *h;
8341 Elf_Internal_Sym *sym;
8343 unsigned char *tls_mask;
8344 unsigned char tls_set, tls_clear, tls_type = 0;
8346 bfd_boolean ok_tprel, is_local;
8347 long toc_ref_index = 0;
8348 int expecting_tls_get_addr = 0;
8349 bfd_boolean ret = FALSE;
8351 r_symndx = ELF64_R_SYM (rel->r_info);
8352 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8356 if (elf_section_data (sec)->relocs != relstart)
8358 if (toc_ref != NULL)
8361 && (elf_symtab_hdr (ibfd).contents
8362 != (unsigned char *) locsyms))
8369 if (h->root.type == bfd_link_hash_defined
8370 || h->root.type == bfd_link_hash_defweak)
8371 value = h->root.u.def.value;
8372 else if (h->root.type == bfd_link_hash_undefweak)
8376 found_tls_get_addr_arg = 0;
8381 /* Symbols referenced by TLS relocs must be of type
8382 STT_TLS. So no need for .opd local sym adjust. */
8383 value = sym->st_value;
8392 && h->root.type == bfd_link_hash_undefweak)
8394 else if (sym_sec != NULL
8395 && sym_sec->output_section != NULL)
8397 value += sym_sec->output_offset;
8398 value += sym_sec->output_section->vma;
8399 value -= htab->elf.tls_sec->vma;
8400 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8401 < (bfd_vma) 1 << 32);
8405 r_type = ELF64_R_TYPE (rel->r_info);
8406 /* If this section has old-style __tls_get_addr calls
8407 without marker relocs, then check that each
8408 __tls_get_addr call reloc is preceded by a reloc
8409 that conceivably belongs to the __tls_get_addr arg
8410 setup insn. If we don't find matching arg setup
8411 relocs, don't do any tls optimization. */
8413 && sec->has_tls_get_addr_call
8415 && (h == &htab->tls_get_addr->elf
8416 || h == &htab->tls_get_addr_fd->elf)
8417 && !found_tls_get_addr_arg
8418 && is_branch_reloc (r_type))
8420 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8421 "TLS optimization disabled\n"),
8422 ibfd, sec, rel->r_offset);
8427 found_tls_get_addr_arg = 0;
8430 case R_PPC64_GOT_TLSLD16:
8431 case R_PPC64_GOT_TLSLD16_LO:
8432 expecting_tls_get_addr = 1;
8433 found_tls_get_addr_arg = 1;
8436 case R_PPC64_GOT_TLSLD16_HI:
8437 case R_PPC64_GOT_TLSLD16_HA:
8438 /* These relocs should never be against a symbol
8439 defined in a shared lib. Leave them alone if
8440 that turns out to be the case. */
8447 tls_type = TLS_TLS | TLS_LD;
8450 case R_PPC64_GOT_TLSGD16:
8451 case R_PPC64_GOT_TLSGD16_LO:
8452 expecting_tls_get_addr = 1;
8453 found_tls_get_addr_arg = 1;
8456 case R_PPC64_GOT_TLSGD16_HI:
8457 case R_PPC64_GOT_TLSGD16_HA:
8463 tls_set = TLS_TLS | TLS_TPRELGD;
8465 tls_type = TLS_TLS | TLS_GD;
8468 case R_PPC64_GOT_TPREL16_DS:
8469 case R_PPC64_GOT_TPREL16_LO_DS:
8470 case R_PPC64_GOT_TPREL16_HI:
8471 case R_PPC64_GOT_TPREL16_HA:
8476 tls_clear = TLS_TPREL;
8477 tls_type = TLS_TLS | TLS_TPREL;
8484 found_tls_get_addr_arg = 1;
8489 case R_PPC64_TOC16_LO:
8490 if (sym_sec == NULL || sym_sec != toc)
8493 /* Mark this toc entry as referenced by a TLS
8494 code sequence. We can do that now in the
8495 case of R_PPC64_TLS, and after checking for
8496 tls_get_addr for the TOC16 relocs. */
8497 if (toc_ref == NULL)
8498 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8499 if (toc_ref == NULL)
8503 value = h->root.u.def.value;
8505 value = sym->st_value;
8506 value += rel->r_addend;
8509 BFD_ASSERT (value < toc->size
8510 && toc->output_offset % 8 == 0);
8511 toc_ref_index = (value + toc->output_offset) / 8;
8512 if (r_type == R_PPC64_TLS
8513 || r_type == R_PPC64_TLSGD
8514 || r_type == R_PPC64_TLSLD)
8516 toc_ref[toc_ref_index] = 1;
8520 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8525 expecting_tls_get_addr = 2;
8528 case R_PPC64_TPREL64:
8532 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8537 tls_set = TLS_EXPLICIT;
8538 tls_clear = TLS_TPREL;
8543 case R_PPC64_DTPMOD64:
8547 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8549 if (rel + 1 < relend
8551 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8552 && rel[1].r_offset == rel->r_offset + 8)
8556 tls_set = TLS_EXPLICIT | TLS_GD;
8559 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8568 tls_set = TLS_EXPLICIT;
8579 if (!expecting_tls_get_addr
8580 || !sec->has_tls_get_addr_call)
8583 if (rel + 1 < relend
8584 && branch_reloc_hash_match (ibfd, rel + 1,
8586 htab->tls_get_addr_fd))
8588 if (expecting_tls_get_addr == 2)
8590 /* Check for toc tls entries. */
8591 unsigned char *toc_tls;
8594 retval = get_tls_mask (&toc_tls, NULL, NULL,
8599 if (toc_tls != NULL)
8601 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8602 found_tls_get_addr_arg = 1;
8604 toc_ref[toc_ref_index] = 1;
8610 if (expecting_tls_get_addr != 1)
8613 /* Uh oh, we didn't find the expected call. We
8614 could just mark this symbol to exclude it
8615 from tls optimization but it's safer to skip
8616 the entire optimization. */
8617 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8618 "TLS optimization disabled\n"),
8619 ibfd, sec, rel->r_offset);
8624 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8626 struct plt_entry *ent;
8627 for (ent = htab->tls_get_addr->elf.plt.plist;
8630 if (ent->addend == 0)
8632 if (ent->plt.refcount > 0)
8634 ent->plt.refcount -= 1;
8635 expecting_tls_get_addr = 0;
8641 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8643 struct plt_entry *ent;
8644 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8647 if (ent->addend == 0)
8649 if (ent->plt.refcount > 0)
8650 ent->plt.refcount -= 1;
8658 if ((tls_set & TLS_EXPLICIT) == 0)
8660 struct got_entry *ent;
8662 /* Adjust got entry for this reloc. */
8666 ent = elf_local_got_ents (ibfd)[r_symndx];
8668 for (; ent != NULL; ent = ent->next)
8669 if (ent->addend == rel->r_addend
8670 && ent->owner == ibfd
8671 && ent->tls_type == tls_type)
8678 /* We managed to get rid of a got entry. */
8679 if (ent->got.refcount > 0)
8680 ent->got.refcount -= 1;
8685 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8686 we'll lose one or two dyn relocs. */
8687 if (!dec_dynrel_count (rel->r_info, sec, info,
8691 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8693 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8699 *tls_mask |= tls_set;
8700 *tls_mask &= ~tls_clear;
8703 if (elf_section_data (sec)->relocs != relstart)
8708 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8710 if (!info->keep_memory)
8713 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8717 if (toc_ref != NULL)
8722 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8723 the values of any global symbols in a toc section that has been
8724 edited. Globals in toc sections should be a rarity, so this function
8725 sets a flag if any are found in toc sections other than the one just
8726 edited, so that futher hash table traversals can be avoided. */
8728 struct adjust_toc_info
8731 unsigned long *skip;
8732 bfd_boolean global_toc_syms;
8735 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8738 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8740 struct ppc_link_hash_entry *eh;
8741 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8744 if (h->root.type != bfd_link_hash_defined
8745 && h->root.type != bfd_link_hash_defweak)
8748 eh = (struct ppc_link_hash_entry *) h;
8749 if (eh->adjust_done)
8752 if (eh->elf.root.u.def.section == toc_inf->toc)
8754 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8755 i = toc_inf->toc->rawsize >> 3;
8757 i = eh->elf.root.u.def.value >> 3;
8759 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8761 (*_bfd_error_handler)
8762 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8765 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8766 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8769 eh->elf.root.u.def.value -= toc_inf->skip[i];
8770 eh->adjust_done = 1;
8772 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8773 toc_inf->global_toc_syms = TRUE;
8778 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8781 ok_lo_toc_insn (unsigned int insn)
8783 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8784 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8785 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8786 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8787 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8788 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8789 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8790 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8791 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8792 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8793 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8794 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8795 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8796 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8797 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8799 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8800 && ((insn & 3) == 0 || (insn & 3) == 3))
8801 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8804 /* Examine all relocs referencing .toc sections in order to remove
8805 unused .toc entries. */
8808 ppc64_elf_edit_toc (struct bfd_link_info *info)
8811 struct adjust_toc_info toc_inf;
8812 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8814 htab->do_toc_opt = 1;
8815 toc_inf.global_toc_syms = TRUE;
8816 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8818 asection *toc, *sec;
8819 Elf_Internal_Shdr *symtab_hdr;
8820 Elf_Internal_Sym *local_syms;
8821 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8822 unsigned long *skip, *drop;
8823 unsigned char *used;
8824 unsigned char *keep, last, some_unused;
8826 if (!is_ppc64_elf (ibfd))
8829 toc = bfd_get_section_by_name (ibfd, ".toc");
8832 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8833 || discarded_section (toc))
8838 symtab_hdr = &elf_symtab_hdr (ibfd);
8840 /* Look at sections dropped from the final link. */
8843 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8845 if (sec->reloc_count == 0
8846 || !discarded_section (sec)
8847 || get_opd_info (sec)
8848 || (sec->flags & SEC_ALLOC) == 0
8849 || (sec->flags & SEC_DEBUGGING) != 0)
8852 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8853 if (relstart == NULL)
8856 /* Run through the relocs to see which toc entries might be
8858 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8860 enum elf_ppc64_reloc_type r_type;
8861 unsigned long r_symndx;
8863 struct elf_link_hash_entry *h;
8864 Elf_Internal_Sym *sym;
8867 r_type = ELF64_R_TYPE (rel->r_info);
8874 case R_PPC64_TOC16_LO:
8875 case R_PPC64_TOC16_HI:
8876 case R_PPC64_TOC16_HA:
8877 case R_PPC64_TOC16_DS:
8878 case R_PPC64_TOC16_LO_DS:
8882 r_symndx = ELF64_R_SYM (rel->r_info);
8883 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8891 val = h->root.u.def.value;
8893 val = sym->st_value;
8894 val += rel->r_addend;
8896 if (val >= toc->size)
8899 /* Anything in the toc ought to be aligned to 8 bytes.
8900 If not, don't mark as unused. */
8906 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8911 skip[val >> 3] = ref_from_discarded;
8914 if (elf_section_data (sec)->relocs != relstart)
8918 /* For largetoc loads of address constants, we can convert
8919 . addis rx,2,addr@got@ha
8920 . ld ry,addr@got@l(rx)
8922 . addis rx,2,addr@toc@ha
8923 . addi ry,rx,addr@toc@l
8924 when addr is within 2G of the toc pointer. This then means
8925 that the word storing "addr" in the toc is no longer needed. */
8927 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8928 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8929 && toc->reloc_count != 0)
8931 /* Read toc relocs. */
8932 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8934 if (toc_relocs == NULL)
8937 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8939 enum elf_ppc64_reloc_type r_type;
8940 unsigned long r_symndx;
8942 struct elf_link_hash_entry *h;
8943 Elf_Internal_Sym *sym;
8946 r_type = ELF64_R_TYPE (rel->r_info);
8947 if (r_type != R_PPC64_ADDR64)
8950 r_symndx = ELF64_R_SYM (rel->r_info);
8951 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8956 || sym_sec->output_section == NULL
8957 || discarded_section (sym_sec))
8960 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8965 if (h->type == STT_GNU_IFUNC)
8967 val = h->root.u.def.value;
8971 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8973 val = sym->st_value;
8975 val += rel->r_addend;
8976 val += sym_sec->output_section->vma + sym_sec->output_offset;
8978 /* We don't yet know the exact toc pointer value, but we
8979 know it will be somewhere in the toc section. Don't
8980 optimize if the difference from any possible toc
8981 pointer is outside [ff..f80008000, 7fff7fff]. */
8982 addr = toc->output_section->vma + TOC_BASE_OFF;
8983 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8986 addr = toc->output_section->vma + toc->output_section->rawsize;
8987 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8992 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8997 skip[rel->r_offset >> 3]
8998 |= can_optimize | ((rel - toc_relocs) << 2);
9005 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9009 if (local_syms != NULL
9010 && symtab_hdr->contents != (unsigned char *) local_syms)
9014 && elf_section_data (sec)->relocs != relstart)
9016 if (toc_relocs != NULL
9017 && elf_section_data (toc)->relocs != toc_relocs)
9024 /* Now check all kept sections that might reference the toc.
9025 Check the toc itself last. */
9026 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9029 sec = (sec == toc ? NULL
9030 : sec->next == NULL ? toc
9031 : sec->next == toc && toc->next ? toc->next
9036 if (sec->reloc_count == 0
9037 || discarded_section (sec)
9038 || get_opd_info (sec)
9039 || (sec->flags & SEC_ALLOC) == 0
9040 || (sec->flags & SEC_DEBUGGING) != 0)
9043 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9045 if (relstart == NULL)
9051 /* Mark toc entries referenced as used. */
9055 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9057 enum elf_ppc64_reloc_type r_type;
9058 unsigned long r_symndx;
9060 struct elf_link_hash_entry *h;
9061 Elf_Internal_Sym *sym;
9063 enum {no_check, check_lo, check_ha} insn_check;
9065 r_type = ELF64_R_TYPE (rel->r_info);
9069 insn_check = no_check;
9072 case R_PPC64_GOT_TLSLD16_HA:
9073 case R_PPC64_GOT_TLSGD16_HA:
9074 case R_PPC64_GOT_TPREL16_HA:
9075 case R_PPC64_GOT_DTPREL16_HA:
9076 case R_PPC64_GOT16_HA:
9077 case R_PPC64_TOC16_HA:
9078 insn_check = check_ha;
9081 case R_PPC64_GOT_TLSLD16_LO:
9082 case R_PPC64_GOT_TLSGD16_LO:
9083 case R_PPC64_GOT_TPREL16_LO_DS:
9084 case R_PPC64_GOT_DTPREL16_LO_DS:
9085 case R_PPC64_GOT16_LO:
9086 case R_PPC64_GOT16_LO_DS:
9087 case R_PPC64_TOC16_LO:
9088 case R_PPC64_TOC16_LO_DS:
9089 insn_check = check_lo;
9093 if (insn_check != no_check)
9095 bfd_vma off = rel->r_offset & ~3;
9096 unsigned char buf[4];
9099 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9104 insn = bfd_get_32 (ibfd, buf);
9105 if (insn_check == check_lo
9106 ? !ok_lo_toc_insn (insn)
9107 : ((insn & ((0x3f << 26) | 0x1f << 16))
9108 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9112 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9113 sprintf (str, "%#08x", insn);
9114 info->callbacks->einfo
9115 (_("%P: %H: toc optimization is not supported for"
9116 " %s instruction.\n"),
9117 ibfd, sec, rel->r_offset & ~3, str);
9124 case R_PPC64_TOC16_LO:
9125 case R_PPC64_TOC16_HI:
9126 case R_PPC64_TOC16_HA:
9127 case R_PPC64_TOC16_DS:
9128 case R_PPC64_TOC16_LO_DS:
9129 /* In case we're taking addresses of toc entries. */
9130 case R_PPC64_ADDR64:
9137 r_symndx = ELF64_R_SYM (rel->r_info);
9138 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9149 val = h->root.u.def.value;
9151 val = sym->st_value;
9152 val += rel->r_addend;
9154 if (val >= toc->size)
9157 if ((skip[val >> 3] & can_optimize) != 0)
9164 case R_PPC64_TOC16_HA:
9167 case R_PPC64_TOC16_LO_DS:
9168 off = rel->r_offset;
9169 off += (bfd_big_endian (ibfd) ? -2 : 3);
9170 if (!bfd_get_section_contents (ibfd, sec, &opc,
9176 if ((opc & (0x3f << 2)) == (58u << 2))
9181 /* Wrong sort of reloc, or not a ld. We may
9182 as well clear ref_from_discarded too. */
9189 /* For the toc section, we only mark as used if this
9190 entry itself isn't unused. */
9191 else if ((used[rel->r_offset >> 3]
9192 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9195 /* Do all the relocs again, to catch reference
9204 if (elf_section_data (sec)->relocs != relstart)
9208 /* Merge the used and skip arrays. Assume that TOC
9209 doublewords not appearing as either used or unused belong
9210 to to an entry more than one doubleword in size. */
9211 for (drop = skip, keep = used, last = 0, some_unused = 0;
9212 drop < skip + (toc->size + 7) / 8;
9217 *drop &= ~ref_from_discarded;
9218 if ((*drop & can_optimize) != 0)
9222 else if ((*drop & ref_from_discarded) != 0)
9225 last = ref_from_discarded;
9235 bfd_byte *contents, *src;
9237 Elf_Internal_Sym *sym;
9238 bfd_boolean local_toc_syms = FALSE;
9240 /* Shuffle the toc contents, and at the same time convert the
9241 skip array from booleans into offsets. */
9242 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9245 elf_section_data (toc)->this_hdr.contents = contents;
9247 for (src = contents, off = 0, drop = skip;
9248 src < contents + toc->size;
9251 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9256 memcpy (src - off, src, 8);
9260 toc->rawsize = toc->size;
9261 toc->size = src - contents - off;
9263 /* Adjust addends for relocs against the toc section sym,
9264 and optimize any accesses we can. */
9265 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9267 if (sec->reloc_count == 0
9268 || discarded_section (sec))
9271 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9273 if (relstart == NULL)
9276 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9278 enum elf_ppc64_reloc_type r_type;
9279 unsigned long r_symndx;
9281 struct elf_link_hash_entry *h;
9284 r_type = ELF64_R_TYPE (rel->r_info);
9291 case R_PPC64_TOC16_LO:
9292 case R_PPC64_TOC16_HI:
9293 case R_PPC64_TOC16_HA:
9294 case R_PPC64_TOC16_DS:
9295 case R_PPC64_TOC16_LO_DS:
9296 case R_PPC64_ADDR64:
9300 r_symndx = ELF64_R_SYM (rel->r_info);
9301 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9309 val = h->root.u.def.value;
9312 val = sym->st_value;
9314 local_toc_syms = TRUE;
9317 val += rel->r_addend;
9319 if (val > toc->rawsize)
9321 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9323 else if ((skip[val >> 3] & can_optimize) != 0)
9325 Elf_Internal_Rela *tocrel
9326 = toc_relocs + (skip[val >> 3] >> 2);
9327 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9331 case R_PPC64_TOC16_HA:
9332 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9335 case R_PPC64_TOC16_LO_DS:
9336 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9340 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9342 info->callbacks->einfo
9343 (_("%P: %H: %s references "
9344 "optimized away TOC entry\n"),
9345 ibfd, sec, rel->r_offset,
9346 ppc64_elf_howto_table[r_type]->name);
9347 bfd_set_error (bfd_error_bad_value);
9350 rel->r_addend = tocrel->r_addend;
9351 elf_section_data (sec)->relocs = relstart;
9355 if (h != NULL || sym->st_value != 0)
9358 rel->r_addend -= skip[val >> 3];
9359 elf_section_data (sec)->relocs = relstart;
9362 if (elf_section_data (sec)->relocs != relstart)
9366 /* We shouldn't have local or global symbols defined in the TOC,
9367 but handle them anyway. */
9368 if (local_syms != NULL)
9369 for (sym = local_syms;
9370 sym < local_syms + symtab_hdr->sh_info;
9372 if (sym->st_value != 0
9373 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9377 if (sym->st_value > toc->rawsize)
9378 i = toc->rawsize >> 3;
9380 i = sym->st_value >> 3;
9382 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9385 (*_bfd_error_handler)
9386 (_("%s defined on removed toc entry"),
9387 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9390 while ((skip[i] & (ref_from_discarded | can_optimize)));
9391 sym->st_value = (bfd_vma) i << 3;
9394 sym->st_value -= skip[i];
9395 symtab_hdr->contents = (unsigned char *) local_syms;
9398 /* Adjust any global syms defined in this toc input section. */
9399 if (toc_inf.global_toc_syms)
9402 toc_inf.skip = skip;
9403 toc_inf.global_toc_syms = FALSE;
9404 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9408 if (toc->reloc_count != 0)
9410 Elf_Internal_Shdr *rel_hdr;
9411 Elf_Internal_Rela *wrel;
9414 /* Remove unused toc relocs, and adjust those we keep. */
9415 if (toc_relocs == NULL)
9416 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9418 if (toc_relocs == NULL)
9422 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9423 if ((skip[rel->r_offset >> 3]
9424 & (ref_from_discarded | can_optimize)) == 0)
9426 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9427 wrel->r_info = rel->r_info;
9428 wrel->r_addend = rel->r_addend;
9431 else if (!dec_dynrel_count (rel->r_info, toc, info,
9432 &local_syms, NULL, NULL))
9435 elf_section_data (toc)->relocs = toc_relocs;
9436 toc->reloc_count = wrel - toc_relocs;
9437 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9438 sz = rel_hdr->sh_entsize;
9439 rel_hdr->sh_size = toc->reloc_count * sz;
9442 else if (toc_relocs != NULL
9443 && elf_section_data (toc)->relocs != toc_relocs)
9446 if (local_syms != NULL
9447 && symtab_hdr->contents != (unsigned char *) local_syms)
9449 if (!info->keep_memory)
9452 symtab_hdr->contents = (unsigned char *) local_syms;
9460 /* Return true iff input section I references the TOC using
9461 instructions limited to +/-32k offsets. */
9464 ppc64_elf_has_small_toc_reloc (asection *i)
9466 return (is_ppc64_elf (i->owner)
9467 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9470 /* Allocate space for one GOT entry. */
9473 allocate_got (struct elf_link_hash_entry *h,
9474 struct bfd_link_info *info,
9475 struct got_entry *gent)
9477 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9479 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9480 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9482 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9483 ? 2 : 1) * sizeof (Elf64_External_Rela);
9484 asection *got = ppc64_elf_tdata (gent->owner)->got;
9486 gent->got.offset = got->size;
9487 got->size += entsize;
9489 dyn = htab->elf.dynamic_sections_created;
9490 if (h->type == STT_GNU_IFUNC)
9492 htab->elf.irelplt->size += rentsize;
9493 htab->got_reli_size += rentsize;
9495 else if ((bfd_link_pic (info)
9496 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9497 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9498 || h->root.type != bfd_link_hash_undefweak))
9500 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9501 relgot->size += rentsize;
9505 /* This function merges got entries in the same toc group. */
9508 merge_got_entries (struct got_entry **pent)
9510 struct got_entry *ent, *ent2;
9512 for (ent = *pent; ent != NULL; ent = ent->next)
9513 if (!ent->is_indirect)
9514 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9515 if (!ent2->is_indirect
9516 && ent2->addend == ent->addend
9517 && ent2->tls_type == ent->tls_type
9518 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9520 ent2->is_indirect = TRUE;
9521 ent2->got.ent = ent;
9525 /* Allocate space in .plt, .got and associated reloc sections for
9529 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9531 struct bfd_link_info *info;
9532 struct ppc_link_hash_table *htab;
9534 struct ppc_link_hash_entry *eh;
9535 struct elf_dyn_relocs *p;
9536 struct got_entry **pgent, *gent;
9538 if (h->root.type == bfd_link_hash_indirect)
9541 info = (struct bfd_link_info *) inf;
9542 htab = ppc_hash_table (info);
9546 if ((htab->elf.dynamic_sections_created
9548 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9549 || h->type == STT_GNU_IFUNC)
9551 struct plt_entry *pent;
9552 bfd_boolean doneone = FALSE;
9553 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9554 if (pent->plt.refcount > 0)
9556 if (!htab->elf.dynamic_sections_created
9557 || h->dynindx == -1)
9560 pent->plt.offset = s->size;
9561 s->size += PLT_ENTRY_SIZE (htab);
9562 s = htab->elf.irelplt;
9566 /* If this is the first .plt entry, make room for the special
9570 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9572 pent->plt.offset = s->size;
9574 /* Make room for this entry. */
9575 s->size += PLT_ENTRY_SIZE (htab);
9577 /* Make room for the .glink code. */
9580 s->size += GLINK_CALL_STUB_SIZE;
9583 /* We need bigger stubs past index 32767. */
9584 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9591 /* We also need to make an entry in the .rela.plt section. */
9592 s = htab->elf.srelplt;
9594 s->size += sizeof (Elf64_External_Rela);
9598 pent->plt.offset = (bfd_vma) -1;
9601 h->plt.plist = NULL;
9607 h->plt.plist = NULL;
9611 eh = (struct ppc_link_hash_entry *) h;
9612 /* Run through the TLS GD got entries first if we're changing them
9614 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9615 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9616 if (gent->got.refcount > 0
9617 && (gent->tls_type & TLS_GD) != 0)
9619 /* This was a GD entry that has been converted to TPREL. If
9620 there happens to be a TPREL entry we can use that one. */
9621 struct got_entry *ent;
9622 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9623 if (ent->got.refcount > 0
9624 && (ent->tls_type & TLS_TPREL) != 0
9625 && ent->addend == gent->addend
9626 && ent->owner == gent->owner)
9628 gent->got.refcount = 0;
9632 /* If not, then we'll be using our own TPREL entry. */
9633 if (gent->got.refcount != 0)
9634 gent->tls_type = TLS_TLS | TLS_TPREL;
9637 /* Remove any list entry that won't generate a word in the GOT before
9638 we call merge_got_entries. Otherwise we risk merging to empty
9640 pgent = &h->got.glist;
9641 while ((gent = *pgent) != NULL)
9642 if (gent->got.refcount > 0)
9644 if ((gent->tls_type & TLS_LD) != 0
9647 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9648 *pgent = gent->next;
9651 pgent = &gent->next;
9654 *pgent = gent->next;
9656 if (!htab->do_multi_toc)
9657 merge_got_entries (&h->got.glist);
9659 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9660 if (!gent->is_indirect)
9662 /* Make sure this symbol is output as a dynamic symbol.
9663 Undefined weak syms won't yet be marked as dynamic,
9664 nor will all TLS symbols. */
9665 if (h->dynindx == -1
9667 && h->type != STT_GNU_IFUNC
9668 && htab->elf.dynamic_sections_created)
9670 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9674 if (!is_ppc64_elf (gent->owner))
9677 allocate_got (h, info, gent);
9680 if (eh->dyn_relocs == NULL
9681 || (!htab->elf.dynamic_sections_created
9682 && h->type != STT_GNU_IFUNC))
9685 /* In the shared -Bsymbolic case, discard space allocated for
9686 dynamic pc-relative relocs against symbols which turn out to be
9687 defined in regular objects. For the normal shared case, discard
9688 space for relocs that have become local due to symbol visibility
9691 if (bfd_link_pic (info))
9693 /* Relocs that use pc_count are those that appear on a call insn,
9694 or certain REL relocs (see must_be_dyn_reloc) that can be
9695 generated via assembly. We want calls to protected symbols to
9696 resolve directly to the function rather than going via the plt.
9697 If people want function pointer comparisons to work as expected
9698 then they should avoid writing weird assembly. */
9699 if (SYMBOL_CALLS_LOCAL (info, h))
9701 struct elf_dyn_relocs **pp;
9703 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9705 p->count -= p->pc_count;
9714 /* Also discard relocs on undefined weak syms with non-default
9716 if (eh->dyn_relocs != NULL
9717 && h->root.type == bfd_link_hash_undefweak)
9719 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9720 eh->dyn_relocs = NULL;
9722 /* Make sure this symbol is output as a dynamic symbol.
9723 Undefined weak syms won't yet be marked as dynamic. */
9724 else if (h->dynindx == -1
9725 && !h->forced_local)
9727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9732 else if (h->type == STT_GNU_IFUNC)
9734 if (!h->non_got_ref)
9735 eh->dyn_relocs = NULL;
9737 else if (ELIMINATE_COPY_RELOCS)
9739 /* For the non-shared case, discard space for relocs against
9740 symbols which turn out to need copy relocs or are not
9746 /* Make sure this symbol is output as a dynamic symbol.
9747 Undefined weak syms won't yet be marked as dynamic. */
9748 if (h->dynindx == -1
9749 && !h->forced_local)
9751 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9755 /* If that succeeded, we know we'll be keeping all the
9757 if (h->dynindx != -1)
9761 eh->dyn_relocs = NULL;
9766 /* Finally, allocate space. */
9767 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9769 asection *sreloc = elf_section_data (p->sec)->sreloc;
9770 if (eh->elf.type == STT_GNU_IFUNC)
9771 sreloc = htab->elf.irelplt;
9772 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9778 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9779 to set up space for global entry stubs. These are put in glink,
9780 after the branch table. */
9783 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9785 struct bfd_link_info *info;
9786 struct ppc_link_hash_table *htab;
9787 struct plt_entry *pent;
9790 if (h->root.type == bfd_link_hash_indirect)
9793 if (!h->pointer_equality_needed)
9800 htab = ppc_hash_table (info);
9805 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9806 if (pent->plt.offset != (bfd_vma) -1
9807 && pent->addend == 0)
9809 /* For ELFv2, if this symbol is not defined in a regular file
9810 and we are not generating a shared library or pie, then we
9811 need to define the symbol in the executable on a call stub.
9812 This is to avoid text relocations. */
9813 s->size = (s->size + 15) & -16;
9814 h->root.u.def.section = s;
9815 h->root.u.def.value = s->size;
9822 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9823 read-only sections. */
9826 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9828 if (h->root.type == bfd_link_hash_indirect)
9831 if (readonly_dynrelocs (h))
9833 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9835 /* Not an error, just cut short the traversal. */
9841 /* Set the sizes of the dynamic sections. */
9844 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9845 struct bfd_link_info *info)
9847 struct ppc_link_hash_table *htab;
9852 struct got_entry *first_tlsld;
9854 htab = ppc_hash_table (info);
9858 dynobj = htab->elf.dynobj;
9862 if (htab->elf.dynamic_sections_created)
9864 /* Set the contents of the .interp section to the interpreter. */
9865 if (bfd_link_executable (info) && !info->nointerp)
9867 s = bfd_get_linker_section (dynobj, ".interp");
9870 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9871 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9875 /* Set up .got offsets for local syms, and space for local dynamic
9877 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9879 struct got_entry **lgot_ents;
9880 struct got_entry **end_lgot_ents;
9881 struct plt_entry **local_plt;
9882 struct plt_entry **end_local_plt;
9883 unsigned char *lgot_masks;
9884 bfd_size_type locsymcount;
9885 Elf_Internal_Shdr *symtab_hdr;
9887 if (!is_ppc64_elf (ibfd))
9890 for (s = ibfd->sections; s != NULL; s = s->next)
9892 struct ppc_dyn_relocs *p;
9894 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9896 if (!bfd_is_abs_section (p->sec)
9897 && bfd_is_abs_section (p->sec->output_section))
9899 /* Input section has been discarded, either because
9900 it is a copy of a linkonce section or due to
9901 linker script /DISCARD/, so we'll be discarding
9904 else if (p->count != 0)
9906 asection *srel = elf_section_data (p->sec)->sreloc;
9908 srel = htab->elf.irelplt;
9909 srel->size += p->count * sizeof (Elf64_External_Rela);
9910 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9911 info->flags |= DF_TEXTREL;
9916 lgot_ents = elf_local_got_ents (ibfd);
9920 symtab_hdr = &elf_symtab_hdr (ibfd);
9921 locsymcount = symtab_hdr->sh_info;
9922 end_lgot_ents = lgot_ents + locsymcount;
9923 local_plt = (struct plt_entry **) end_lgot_ents;
9924 end_local_plt = local_plt + locsymcount;
9925 lgot_masks = (unsigned char *) end_local_plt;
9926 s = ppc64_elf_tdata (ibfd)->got;
9927 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9929 struct got_entry **pent, *ent;
9932 while ((ent = *pent) != NULL)
9933 if (ent->got.refcount > 0)
9935 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9937 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9942 unsigned int ent_size = 8;
9943 unsigned int rel_size = sizeof (Elf64_External_Rela);
9945 ent->got.offset = s->size;
9946 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9951 s->size += ent_size;
9952 if ((*lgot_masks & PLT_IFUNC) != 0)
9954 htab->elf.irelplt->size += rel_size;
9955 htab->got_reli_size += rel_size;
9957 else if (bfd_link_pic (info))
9959 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9960 srel->size += rel_size;
9969 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9970 for (; local_plt < end_local_plt; ++local_plt)
9972 struct plt_entry *ent;
9974 for (ent = *local_plt; ent != NULL; ent = ent->next)
9975 if (ent->plt.refcount > 0)
9978 ent->plt.offset = s->size;
9979 s->size += PLT_ENTRY_SIZE (htab);
9981 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9984 ent->plt.offset = (bfd_vma) -1;
9988 /* Allocate global sym .plt and .got entries, and space for global
9989 sym dynamic relocs. */
9990 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9991 /* Stash the end of glink branch table. */
9992 if (htab->glink != NULL)
9993 htab->glink->rawsize = htab->glink->size;
9995 if (!htab->opd_abi && !bfd_link_pic (info))
9996 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9999 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10001 struct got_entry *ent;
10003 if (!is_ppc64_elf (ibfd))
10006 ent = ppc64_tlsld_got (ibfd);
10007 if (ent->got.refcount > 0)
10009 if (!htab->do_multi_toc && first_tlsld != NULL)
10011 ent->is_indirect = TRUE;
10012 ent->got.ent = first_tlsld;
10016 if (first_tlsld == NULL)
10018 s = ppc64_elf_tdata (ibfd)->got;
10019 ent->got.offset = s->size;
10022 if (bfd_link_pic (info))
10024 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10025 srel->size += sizeof (Elf64_External_Rela);
10030 ent->got.offset = (bfd_vma) -1;
10033 /* We now have determined the sizes of the various dynamic sections.
10034 Allocate memory for them. */
10036 for (s = dynobj->sections; s != NULL; s = s->next)
10038 if ((s->flags & SEC_LINKER_CREATED) == 0)
10041 if (s == htab->brlt || s == htab->relbrlt)
10042 /* These haven't been allocated yet; don't strip. */
10044 else if (s == htab->elf.sgot
10045 || s == htab->elf.splt
10046 || s == htab->elf.iplt
10047 || s == htab->glink
10048 || s == htab->dynbss)
10050 /* Strip this section if we don't need it; see the
10053 else if (s == htab->glink_eh_frame)
10055 if (!bfd_is_abs_section (s->output_section))
10056 /* Not sized yet. */
10059 else if (CONST_STRNEQ (s->name, ".rela"))
10063 if (s != htab->elf.srelplt)
10066 /* We use the reloc_count field as a counter if we need
10067 to copy relocs into the output file. */
10068 s->reloc_count = 0;
10073 /* It's not one of our sections, so don't allocate space. */
10079 /* If we don't need this section, strip it from the
10080 output file. This is mostly to handle .rela.bss and
10081 .rela.plt. We must create both sections in
10082 create_dynamic_sections, because they must be created
10083 before the linker maps input sections to output
10084 sections. The linker does that before
10085 adjust_dynamic_symbol is called, and it is that
10086 function which decides whether anything needs to go
10087 into these sections. */
10088 s->flags |= SEC_EXCLUDE;
10092 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10095 /* Allocate memory for the section contents. We use bfd_zalloc
10096 here in case unused entries are not reclaimed before the
10097 section's contents are written out. This should not happen,
10098 but this way if it does we get a R_PPC64_NONE reloc in .rela
10099 sections instead of garbage.
10100 We also rely on the section contents being zero when writing
10102 s->contents = bfd_zalloc (dynobj, s->size);
10103 if (s->contents == NULL)
10107 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10109 if (!is_ppc64_elf (ibfd))
10112 s = ppc64_elf_tdata (ibfd)->got;
10113 if (s != NULL && s != htab->elf.sgot)
10116 s->flags |= SEC_EXCLUDE;
10119 s->contents = bfd_zalloc (ibfd, s->size);
10120 if (s->contents == NULL)
10124 s = ppc64_elf_tdata (ibfd)->relgot;
10128 s->flags |= SEC_EXCLUDE;
10131 s->contents = bfd_zalloc (ibfd, s->size);
10132 if (s->contents == NULL)
10135 s->reloc_count = 0;
10140 if (htab->elf.dynamic_sections_created)
10142 bfd_boolean tls_opt;
10144 /* Add some entries to the .dynamic section. We fill in the
10145 values later, in ppc64_elf_finish_dynamic_sections, but we
10146 must add the entries now so that we get the correct size for
10147 the .dynamic section. The DT_DEBUG entry is filled in by the
10148 dynamic linker and used by the debugger. */
10149 #define add_dynamic_entry(TAG, VAL) \
10150 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10152 if (bfd_link_executable (info))
10154 if (!add_dynamic_entry (DT_DEBUG, 0))
10158 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10160 if (!add_dynamic_entry (DT_PLTGOT, 0)
10161 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10162 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10163 || !add_dynamic_entry (DT_JMPREL, 0)
10164 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10168 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10170 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10171 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10175 tls_opt = (htab->params->tls_get_addr_opt
10176 && htab->tls_get_addr_fd != NULL
10177 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10178 if (tls_opt || !htab->opd_abi)
10180 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10186 if (!add_dynamic_entry (DT_RELA, 0)
10187 || !add_dynamic_entry (DT_RELASZ, 0)
10188 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10191 /* If any dynamic relocs apply to a read-only section,
10192 then we need a DT_TEXTREL entry. */
10193 if ((info->flags & DF_TEXTREL) == 0)
10194 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10196 if ((info->flags & DF_TEXTREL) != 0)
10198 if (!add_dynamic_entry (DT_TEXTREL, 0))
10203 #undef add_dynamic_entry
10208 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10211 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10213 if (h->plt.plist != NULL
10215 && !h->pointer_equality_needed)
10218 return _bfd_elf_hash_symbol (h);
10221 /* Determine the type of stub needed, if any, for a call. */
10223 static inline enum ppc_stub_type
10224 ppc_type_of_stub (asection *input_sec,
10225 const Elf_Internal_Rela *rel,
10226 struct ppc_link_hash_entry **hash,
10227 struct plt_entry **plt_ent,
10228 bfd_vma destination,
10229 unsigned long local_off)
10231 struct ppc_link_hash_entry *h = *hash;
10233 bfd_vma branch_offset;
10234 bfd_vma max_branch_offset;
10235 enum elf_ppc64_reloc_type r_type;
10239 struct plt_entry *ent;
10240 struct ppc_link_hash_entry *fdh = h;
10242 && h->oh->is_func_descriptor)
10244 fdh = ppc_follow_link (h->oh);
10248 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10249 if (ent->addend == rel->r_addend
10250 && ent->plt.offset != (bfd_vma) -1)
10253 return ppc_stub_plt_call;
10256 /* Here, we know we don't have a plt entry. If we don't have a
10257 either a defined function descriptor or a defined entry symbol
10258 in a regular object file, then it is pointless trying to make
10259 any other type of stub. */
10260 if (!is_static_defined (&fdh->elf)
10261 && !is_static_defined (&h->elf))
10262 return ppc_stub_none;
10264 else if (elf_local_got_ents (input_sec->owner) != NULL)
10266 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10267 struct plt_entry **local_plt = (struct plt_entry **)
10268 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10269 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10271 if (local_plt[r_symndx] != NULL)
10273 struct plt_entry *ent;
10275 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10276 if (ent->addend == rel->r_addend
10277 && ent->plt.offset != (bfd_vma) -1)
10280 return ppc_stub_plt_call;
10285 /* Determine where the call point is. */
10286 location = (input_sec->output_offset
10287 + input_sec->output_section->vma
10290 branch_offset = destination - location;
10291 r_type = ELF64_R_TYPE (rel->r_info);
10293 /* Determine if a long branch stub is needed. */
10294 max_branch_offset = 1 << 25;
10295 if (r_type != R_PPC64_REL24)
10296 max_branch_offset = 1 << 15;
10298 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10299 /* We need a stub. Figure out whether a long_branch or plt_branch
10300 is needed later. */
10301 return ppc_stub_long_branch;
10303 return ppc_stub_none;
10306 /* With power7 weakly ordered memory model, it is possible for ld.so
10307 to update a plt entry in one thread and have another thread see a
10308 stale zero toc entry. To avoid this we need some sort of acquire
10309 barrier in the call stub. One solution is to make the load of the
10310 toc word seem to appear to depend on the load of the function entry
10311 word. Another solution is to test for r2 being zero, and branch to
10312 the appropriate glink entry if so.
10314 . fake dep barrier compare
10315 . ld 12,xxx(2) ld 12,xxx(2)
10316 . mtctr 12 mtctr 12
10317 . xor 11,12,12 ld 2,xxx+8(2)
10318 . add 2,2,11 cmpldi 2,0
10319 . ld 2,xxx+8(2) bnectr+
10320 . bctr b <glink_entry>
10322 The solution involving the compare turns out to be faster, so
10323 that's what we use unless the branch won't reach. */
10325 #define ALWAYS_USE_FAKE_DEP 0
10326 #define ALWAYS_EMIT_R2SAVE 0
10328 #define PPC_LO(v) ((v) & 0xffff)
10329 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10330 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10332 static inline unsigned int
10333 plt_stub_size (struct ppc_link_hash_table *htab,
10334 struct ppc_stub_hash_entry *stub_entry,
10337 unsigned size = 12;
10339 if (ALWAYS_EMIT_R2SAVE
10340 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10342 if (PPC_HA (off) != 0)
10347 if (htab->params->plt_static_chain)
10349 if (htab->params->plt_thread_safe
10350 && htab->elf.dynamic_sections_created
10351 && stub_entry->h != NULL
10352 && stub_entry->h->elf.dynindx != -1)
10354 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10357 if (stub_entry->h != NULL
10358 && (stub_entry->h == htab->tls_get_addr_fd
10359 || stub_entry->h == htab->tls_get_addr)
10360 && htab->params->tls_get_addr_opt)
10365 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10366 then return the padding needed to do so. */
10367 static inline unsigned int
10368 plt_stub_pad (struct ppc_link_hash_table *htab,
10369 struct ppc_stub_hash_entry *stub_entry,
10372 int stub_align = 1 << htab->params->plt_stub_align;
10373 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10374 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10376 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10377 > ((stub_size - 1) & -stub_align))
10378 return stub_align - (stub_off & (stub_align - 1));
10382 /* Build a .plt call stub. */
10384 static inline bfd_byte *
10385 build_plt_stub (struct ppc_link_hash_table *htab,
10386 struct ppc_stub_hash_entry *stub_entry,
10387 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10389 bfd *obfd = htab->params->stub_bfd;
10390 bfd_boolean plt_load_toc = htab->opd_abi;
10391 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10392 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10393 && htab->elf.dynamic_sections_created
10394 && stub_entry->h != NULL
10395 && stub_entry->h->elf.dynindx != -1);
10396 bfd_boolean use_fake_dep = plt_thread_safe;
10397 bfd_vma cmp_branch_off = 0;
10399 if (!ALWAYS_USE_FAKE_DEP
10402 && !((stub_entry->h == htab->tls_get_addr_fd
10403 || stub_entry->h == htab->tls_get_addr)
10404 && htab->params->tls_get_addr_opt))
10406 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10407 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10408 / PLT_ENTRY_SIZE (htab));
10409 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10412 if (pltindex > 32768)
10413 glinkoff += (pltindex - 32768) * 4;
10415 + htab->glink->output_offset
10416 + htab->glink->output_section->vma);
10417 from = (p - stub_entry->group->stub_sec->contents
10418 + 4 * (ALWAYS_EMIT_R2SAVE
10419 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10420 + 4 * (PPC_HA (offset) != 0)
10421 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10422 != PPC_HA (offset))
10423 + 4 * (plt_static_chain != 0)
10425 + stub_entry->group->stub_sec->output_offset
10426 + stub_entry->group->stub_sec->output_section->vma);
10427 cmp_branch_off = to - from;
10428 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10431 if (PPC_HA (offset) != 0)
10435 if (ALWAYS_EMIT_R2SAVE
10436 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10437 r[0].r_offset += 4;
10438 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10439 r[1].r_offset = r[0].r_offset + 4;
10440 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10441 r[1].r_addend = r[0].r_addend;
10444 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10446 r[2].r_offset = r[1].r_offset + 4;
10447 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10448 r[2].r_addend = r[0].r_addend;
10452 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10453 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10454 r[2].r_addend = r[0].r_addend + 8;
10455 if (plt_static_chain)
10457 r[3].r_offset = r[2].r_offset + 4;
10458 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10459 r[3].r_addend = r[0].r_addend + 16;
10464 if (ALWAYS_EMIT_R2SAVE
10465 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10466 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10469 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10470 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10474 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10475 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10478 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10480 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10483 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10488 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10489 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10491 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10492 if (plt_static_chain)
10493 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10500 if (ALWAYS_EMIT_R2SAVE
10501 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10502 r[0].r_offset += 4;
10503 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10506 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10508 r[1].r_offset = r[0].r_offset + 4;
10509 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10510 r[1].r_addend = r[0].r_addend;
10514 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10515 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10516 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10517 if (plt_static_chain)
10519 r[2].r_offset = r[1].r_offset + 4;
10520 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10521 r[2].r_addend = r[0].r_addend + 8;
10526 if (ALWAYS_EMIT_R2SAVE
10527 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10528 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10529 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10531 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10533 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10536 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10541 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10542 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10544 if (plt_static_chain)
10545 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10546 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10549 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10551 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10552 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10553 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10556 bfd_put_32 (obfd, BCTR, p), p += 4;
10560 /* Build a special .plt call stub for __tls_get_addr. */
10562 #define LD_R11_0R3 0xe9630000
10563 #define LD_R12_0R3 0xe9830000
10564 #define MR_R0_R3 0x7c601b78
10565 #define CMPDI_R11_0 0x2c2b0000
10566 #define ADD_R3_R12_R13 0x7c6c6a14
10567 #define BEQLR 0x4d820020
10568 #define MR_R3_R0 0x7c030378
10569 #define STD_R11_0R1 0xf9610000
10570 #define BCTRL 0x4e800421
10571 #define LD_R11_0R1 0xe9610000
10572 #define MTLR_R11 0x7d6803a6
10574 static inline bfd_byte *
10575 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10576 struct ppc_stub_hash_entry *stub_entry,
10577 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10579 bfd *obfd = htab->params->stub_bfd;
10581 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10582 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10583 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10584 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10585 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10586 bfd_put_32 (obfd, BEQLR, p), p += 4;
10587 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10588 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10589 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10592 r[0].r_offset += 9 * 4;
10593 p = build_plt_stub (htab, stub_entry, p, offset, r);
10594 bfd_put_32 (obfd, BCTRL, p - 4);
10596 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10597 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10598 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10599 bfd_put_32 (obfd, BLR, p), p += 4;
10604 static Elf_Internal_Rela *
10605 get_relocs (asection *sec, int count)
10607 Elf_Internal_Rela *relocs;
10608 struct bfd_elf_section_data *elfsec_data;
10610 elfsec_data = elf_section_data (sec);
10611 relocs = elfsec_data->relocs;
10612 if (relocs == NULL)
10614 bfd_size_type relsize;
10615 relsize = sec->reloc_count * sizeof (*relocs);
10616 relocs = bfd_alloc (sec->owner, relsize);
10617 if (relocs == NULL)
10619 elfsec_data->relocs = relocs;
10620 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10621 sizeof (Elf_Internal_Shdr));
10622 if (elfsec_data->rela.hdr == NULL)
10624 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10625 * sizeof (Elf64_External_Rela));
10626 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10627 sec->reloc_count = 0;
10629 relocs += sec->reloc_count;
10630 sec->reloc_count += count;
10635 get_r2off (struct bfd_link_info *info,
10636 struct ppc_stub_hash_entry *stub_entry)
10638 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10639 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10643 /* Support linking -R objects. Get the toc pointer from the
10646 if (!htab->opd_abi)
10648 asection *opd = stub_entry->h->elf.root.u.def.section;
10649 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10651 if (strcmp (opd->name, ".opd") != 0
10652 || opd->reloc_count != 0)
10654 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10655 stub_entry->h->elf.root.root.string);
10656 bfd_set_error (bfd_error_bad_value);
10657 return (bfd_vma) -1;
10659 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10660 return (bfd_vma) -1;
10661 r2off = bfd_get_64 (opd->owner, buf);
10662 r2off -= elf_gp (info->output_bfd);
10664 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10669 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10671 struct ppc_stub_hash_entry *stub_entry;
10672 struct ppc_branch_hash_entry *br_entry;
10673 struct bfd_link_info *info;
10674 struct ppc_link_hash_table *htab;
10679 Elf_Internal_Rela *r;
10682 /* Massage our args to the form they really have. */
10683 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10686 htab = ppc_hash_table (info);
10690 /* Make a note of the offset within the stubs for this entry. */
10691 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10692 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10694 htab->stub_count[stub_entry->stub_type - 1] += 1;
10695 switch (stub_entry->stub_type)
10697 case ppc_stub_long_branch:
10698 case ppc_stub_long_branch_r2off:
10699 /* Branches are relative. This is where we are going to. */
10700 dest = (stub_entry->target_value
10701 + stub_entry->target_section->output_offset
10702 + stub_entry->target_section->output_section->vma);
10703 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10706 /* And this is where we are coming from. */
10707 off -= (stub_entry->stub_offset
10708 + stub_entry->group->stub_sec->output_offset
10709 + stub_entry->group->stub_sec->output_section->vma);
10712 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10714 bfd_vma r2off = get_r2off (info, stub_entry);
10716 if (r2off == (bfd_vma) -1)
10718 htab->stub_error = TRUE;
10721 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10724 if (PPC_HA (r2off) != 0)
10726 bfd_put_32 (htab->params->stub_bfd,
10727 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10731 if (PPC_LO (r2off) != 0)
10733 bfd_put_32 (htab->params->stub_bfd,
10734 ADDI_R2_R2 | PPC_LO (r2off), loc);
10740 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10742 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10744 info->callbacks->einfo
10745 (_("%P: long branch stub `%s' offset overflow\n"),
10746 stub_entry->root.string);
10747 htab->stub_error = TRUE;
10751 if (info->emitrelocations)
10753 r = get_relocs (stub_entry->group->stub_sec, 1);
10756 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10757 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10758 r->r_addend = dest;
10759 if (stub_entry->h != NULL)
10761 struct elf_link_hash_entry **hashes;
10762 unsigned long symndx;
10763 struct ppc_link_hash_entry *h;
10765 hashes = elf_sym_hashes (htab->params->stub_bfd);
10766 if (hashes == NULL)
10768 bfd_size_type hsize;
10770 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10771 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10772 if (hashes == NULL)
10774 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10775 htab->stub_globals = 1;
10777 symndx = htab->stub_globals++;
10779 hashes[symndx] = &h->elf;
10780 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10781 if (h->oh != NULL && h->oh->is_func)
10782 h = ppc_follow_link (h->oh);
10783 if (h->elf.root.u.def.section != stub_entry->target_section)
10784 /* H is an opd symbol. The addend must be zero. */
10788 off = (h->elf.root.u.def.value
10789 + h->elf.root.u.def.section->output_offset
10790 + h->elf.root.u.def.section->output_section->vma);
10791 r->r_addend -= off;
10797 case ppc_stub_plt_branch:
10798 case ppc_stub_plt_branch_r2off:
10799 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10800 stub_entry->root.string + 9,
10802 if (br_entry == NULL)
10804 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10805 stub_entry->root.string);
10806 htab->stub_error = TRUE;
10810 dest = (stub_entry->target_value
10811 + stub_entry->target_section->output_offset
10812 + stub_entry->target_section->output_section->vma);
10813 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10814 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10816 bfd_put_64 (htab->brlt->owner, dest,
10817 htab->brlt->contents + br_entry->offset);
10819 if (br_entry->iter == htab->stub_iteration)
10821 br_entry->iter = 0;
10823 if (htab->relbrlt != NULL)
10825 /* Create a reloc for the branch lookup table entry. */
10826 Elf_Internal_Rela rela;
10829 rela.r_offset = (br_entry->offset
10830 + htab->brlt->output_offset
10831 + htab->brlt->output_section->vma);
10832 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10833 rela.r_addend = dest;
10835 rl = htab->relbrlt->contents;
10836 rl += (htab->relbrlt->reloc_count++
10837 * sizeof (Elf64_External_Rela));
10838 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10840 else if (info->emitrelocations)
10842 r = get_relocs (htab->brlt, 1);
10845 /* brlt, being SEC_LINKER_CREATED does not go through the
10846 normal reloc processing. Symbols and offsets are not
10847 translated from input file to output file form, so
10848 set up the offset per the output file. */
10849 r->r_offset = (br_entry->offset
10850 + htab->brlt->output_offset
10851 + htab->brlt->output_section->vma);
10852 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10853 r->r_addend = dest;
10857 dest = (br_entry->offset
10858 + htab->brlt->output_offset
10859 + htab->brlt->output_section->vma);
10862 - elf_gp (htab->brlt->output_section->owner)
10863 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10865 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10867 info->callbacks->einfo
10868 (_("%P: linkage table error against `%T'\n"),
10869 stub_entry->root.string);
10870 bfd_set_error (bfd_error_bad_value);
10871 htab->stub_error = TRUE;
10875 if (info->emitrelocations)
10877 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10880 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10881 if (bfd_big_endian (info->output_bfd))
10882 r[0].r_offset += 2;
10883 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10884 r[0].r_offset += 4;
10885 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10886 r[0].r_addend = dest;
10887 if (PPC_HA (off) != 0)
10889 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10890 r[1].r_offset = r[0].r_offset + 4;
10891 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10892 r[1].r_addend = r[0].r_addend;
10896 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10898 if (PPC_HA (off) != 0)
10901 bfd_put_32 (htab->params->stub_bfd,
10902 ADDIS_R12_R2 | PPC_HA (off), loc);
10904 bfd_put_32 (htab->params->stub_bfd,
10905 LD_R12_0R12 | PPC_LO (off), loc);
10910 bfd_put_32 (htab->params->stub_bfd,
10911 LD_R12_0R2 | PPC_LO (off), loc);
10916 bfd_vma r2off = get_r2off (info, stub_entry);
10918 if (r2off == (bfd_vma) -1)
10920 htab->stub_error = TRUE;
10924 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10927 if (PPC_HA (off) != 0)
10930 bfd_put_32 (htab->params->stub_bfd,
10931 ADDIS_R12_R2 | PPC_HA (off), loc);
10933 bfd_put_32 (htab->params->stub_bfd,
10934 LD_R12_0R12 | PPC_LO (off), loc);
10937 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10939 if (PPC_HA (r2off) != 0)
10943 bfd_put_32 (htab->params->stub_bfd,
10944 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10946 if (PPC_LO (r2off) != 0)
10950 bfd_put_32 (htab->params->stub_bfd,
10951 ADDI_R2_R2 | PPC_LO (r2off), loc);
10955 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10957 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10960 case ppc_stub_plt_call:
10961 case ppc_stub_plt_call_r2save:
10962 if (stub_entry->h != NULL
10963 && stub_entry->h->is_func_descriptor
10964 && stub_entry->h->oh != NULL)
10966 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10968 /* If the old-ABI "dot-symbol" is undefined make it weak so
10969 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
10970 if (fh->elf.root.type == bfd_link_hash_undefined)
10971 fh->elf.root.type = bfd_link_hash_undefweak;
10972 /* Stop undo_symbol_twiddle changing it back to undefined. */
10973 fh->was_undefined = 0;
10976 /* Now build the stub. */
10977 dest = stub_entry->plt_ent->plt.offset & ~1;
10978 if (dest >= (bfd_vma) -2)
10981 plt = htab->elf.splt;
10982 if (!htab->elf.dynamic_sections_created
10983 || stub_entry->h == NULL
10984 || stub_entry->h->elf.dynindx == -1)
10985 plt = htab->elf.iplt;
10987 dest += plt->output_offset + plt->output_section->vma;
10989 if (stub_entry->h == NULL
10990 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10992 Elf_Internal_Rela rela;
10995 rela.r_offset = dest;
10997 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10999 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11000 rela.r_addend = (stub_entry->target_value
11001 + stub_entry->target_section->output_offset
11002 + stub_entry->target_section->output_section->vma);
11004 rl = (htab->elf.irelplt->contents
11005 + (htab->elf.irelplt->reloc_count++
11006 * sizeof (Elf64_External_Rela)));
11007 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11008 stub_entry->plt_ent->plt.offset |= 1;
11012 - elf_gp (plt->output_section->owner)
11013 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11015 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11017 info->callbacks->einfo
11018 (_("%P: linkage table error against `%T'\n"),
11019 stub_entry->h != NULL
11020 ? stub_entry->h->elf.root.root.string
11022 bfd_set_error (bfd_error_bad_value);
11023 htab->stub_error = TRUE;
11027 if (htab->params->plt_stub_align != 0)
11029 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11031 stub_entry->group->stub_sec->size += pad;
11032 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11037 if (info->emitrelocations)
11039 r = get_relocs (stub_entry->group->stub_sec,
11040 ((PPC_HA (off) != 0)
11042 ? 2 + (htab->params->plt_static_chain
11043 && PPC_HA (off + 16) == PPC_HA (off))
11047 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11048 if (bfd_big_endian (info->output_bfd))
11049 r[0].r_offset += 2;
11050 r[0].r_addend = dest;
11052 if (stub_entry->h != NULL
11053 && (stub_entry->h == htab->tls_get_addr_fd
11054 || stub_entry->h == htab->tls_get_addr)
11055 && htab->params->tls_get_addr_opt)
11056 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11058 p = build_plt_stub (htab, stub_entry, loc, off, r);
11062 case ppc_stub_save_res:
11070 stub_entry->group->stub_sec->size += size;
11072 if (htab->params->emit_stub_syms)
11074 struct elf_link_hash_entry *h;
11077 const char *const stub_str[] = { "long_branch",
11078 "long_branch_r2off",
11080 "plt_branch_r2off",
11084 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11085 len2 = strlen (stub_entry->root.string);
11086 name = bfd_malloc (len1 + len2 + 2);
11089 memcpy (name, stub_entry->root.string, 9);
11090 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11091 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11092 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11095 if (h->root.type == bfd_link_hash_new)
11097 h->root.type = bfd_link_hash_defined;
11098 h->root.u.def.section = stub_entry->group->stub_sec;
11099 h->root.u.def.value = stub_entry->stub_offset;
11100 h->ref_regular = 1;
11101 h->def_regular = 1;
11102 h->ref_regular_nonweak = 1;
11103 h->forced_local = 1;
11105 h->root.linker_def = 1;
11112 /* As above, but don't actually build the stub. Just bump offset so
11113 we know stub section sizes, and select plt_branch stubs where
11114 long_branch stubs won't do. */
11117 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11119 struct ppc_stub_hash_entry *stub_entry;
11120 struct bfd_link_info *info;
11121 struct ppc_link_hash_table *htab;
11125 /* Massage our args to the form they really have. */
11126 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11129 htab = ppc_hash_table (info);
11133 if (stub_entry->h != NULL
11134 && stub_entry->h->save_res
11135 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11136 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11138 /* Don't make stubs to out-of-line register save/restore
11139 functions. Instead, emit copies of the functions. */
11140 stub_entry->group->needs_save_res = 1;
11141 stub_entry->stub_type = ppc_stub_save_res;
11145 if (stub_entry->stub_type == ppc_stub_plt_call
11146 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11149 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11150 if (off >= (bfd_vma) -2)
11152 plt = htab->elf.splt;
11153 if (!htab->elf.dynamic_sections_created
11154 || stub_entry->h == NULL
11155 || stub_entry->h->elf.dynindx == -1)
11156 plt = htab->elf.iplt;
11157 off += (plt->output_offset
11158 + plt->output_section->vma
11159 - elf_gp (plt->output_section->owner)
11160 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11162 size = plt_stub_size (htab, stub_entry, off);
11163 if (htab->params->plt_stub_align)
11164 size += plt_stub_pad (htab, stub_entry, off);
11165 if (info->emitrelocations)
11167 stub_entry->group->stub_sec->reloc_count
11168 += ((PPC_HA (off) != 0)
11170 ? 2 + (htab->params->plt_static_chain
11171 && PPC_HA (off + 16) == PPC_HA (off))
11173 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11178 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11181 bfd_vma local_off = 0;
11183 off = (stub_entry->target_value
11184 + stub_entry->target_section->output_offset
11185 + stub_entry->target_section->output_section->vma);
11186 off -= (stub_entry->group->stub_sec->size
11187 + stub_entry->group->stub_sec->output_offset
11188 + stub_entry->group->stub_sec->output_section->vma);
11190 /* Reset the stub type from the plt variant in case we now
11191 can reach with a shorter stub. */
11192 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11193 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11196 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11198 r2off = get_r2off (info, stub_entry);
11199 if (r2off == (bfd_vma) -1)
11201 htab->stub_error = TRUE;
11205 if (PPC_HA (r2off) != 0)
11207 if (PPC_LO (r2off) != 0)
11212 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11214 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11215 Do the same for -R objects without function descriptors. */
11216 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11217 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11219 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11221 struct ppc_branch_hash_entry *br_entry;
11223 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11224 stub_entry->root.string + 9,
11226 if (br_entry == NULL)
11228 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11229 stub_entry->root.string);
11230 htab->stub_error = TRUE;
11234 if (br_entry->iter != htab->stub_iteration)
11236 br_entry->iter = htab->stub_iteration;
11237 br_entry->offset = htab->brlt->size;
11238 htab->brlt->size += 8;
11240 if (htab->relbrlt != NULL)
11241 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11242 else if (info->emitrelocations)
11244 htab->brlt->reloc_count += 1;
11245 htab->brlt->flags |= SEC_RELOC;
11249 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11250 off = (br_entry->offset
11251 + htab->brlt->output_offset
11252 + htab->brlt->output_section->vma
11253 - elf_gp (htab->brlt->output_section->owner)
11254 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11256 if (info->emitrelocations)
11258 stub_entry->group->stub_sec->reloc_count
11259 += 1 + (PPC_HA (off) != 0);
11260 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11263 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11266 if (PPC_HA (off) != 0)
11272 if (PPC_HA (off) != 0)
11275 if (PPC_HA (r2off) != 0)
11277 if (PPC_LO (r2off) != 0)
11281 else if (info->emitrelocations)
11283 stub_entry->group->stub_sec->reloc_count += 1;
11284 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11288 stub_entry->group->stub_sec->size += size;
11292 /* Set up various things so that we can make a list of input sections
11293 for each output section included in the link. Returns -1 on error,
11294 0 when no stubs will be needed, and 1 on success. */
11297 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11301 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11306 htab->sec_info_arr_size = bfd_get_next_section_id ();
11307 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11308 htab->sec_info = bfd_zmalloc (amt);
11309 if (htab->sec_info == NULL)
11312 /* Set toc_off for com, und, abs and ind sections. */
11313 for (id = 0; id < 3; id++)
11314 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11319 /* Set up for first pass at multitoc partitioning. */
11322 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11324 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11326 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11327 htab->toc_bfd = NULL;
11328 htab->toc_first_sec = NULL;
11331 /* The linker repeatedly calls this function for each TOC input section
11332 and linker generated GOT section. Group input bfds such that the toc
11333 within a group is less than 64k in size. */
11336 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11338 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11339 bfd_vma addr, off, limit;
11344 if (!htab->second_toc_pass)
11346 /* Keep track of the first .toc or .got section for this input bfd. */
11347 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11351 htab->toc_bfd = isec->owner;
11352 htab->toc_first_sec = isec;
11355 addr = isec->output_offset + isec->output_section->vma;
11356 off = addr - htab->toc_curr;
11357 limit = 0x80008000;
11358 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11360 if (off + isec->size > limit)
11362 addr = (htab->toc_first_sec->output_offset
11363 + htab->toc_first_sec->output_section->vma);
11364 htab->toc_curr = addr;
11365 htab->toc_curr &= -TOC_BASE_ALIGN;
11368 /* toc_curr is the base address of this toc group. Set elf_gp
11369 for the input section to be the offset relative to the
11370 output toc base plus 0x8000. Making the input elf_gp an
11371 offset allows us to move the toc as a whole without
11372 recalculating input elf_gp. */
11373 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11374 off += TOC_BASE_OFF;
11376 /* Die if someone uses a linker script that doesn't keep input
11377 file .toc and .got together. */
11379 && elf_gp (isec->owner) != 0
11380 && elf_gp (isec->owner) != off)
11383 elf_gp (isec->owner) = off;
11387 /* During the second pass toc_first_sec points to the start of
11388 a toc group, and toc_curr is used to track the old elf_gp.
11389 We use toc_bfd to ensure we only look at each bfd once. */
11390 if (htab->toc_bfd == isec->owner)
11392 htab->toc_bfd = isec->owner;
11394 if (htab->toc_first_sec == NULL
11395 || htab->toc_curr != elf_gp (isec->owner))
11397 htab->toc_curr = elf_gp (isec->owner);
11398 htab->toc_first_sec = isec;
11400 addr = (htab->toc_first_sec->output_offset
11401 + htab->toc_first_sec->output_section->vma);
11402 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11403 elf_gp (isec->owner) = off;
11408 /* Called via elf_link_hash_traverse to merge GOT entries for global
11412 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11414 if (h->root.type == bfd_link_hash_indirect)
11417 merge_got_entries (&h->got.glist);
11422 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11426 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11428 struct got_entry *gent;
11430 if (h->root.type == bfd_link_hash_indirect)
11433 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11434 if (!gent->is_indirect)
11435 allocate_got (h, (struct bfd_link_info *) inf, gent);
11439 /* Called on the first multitoc pass after the last call to
11440 ppc64_elf_next_toc_section. This function removes duplicate GOT
11444 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11446 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11447 struct bfd *ibfd, *ibfd2;
11448 bfd_boolean done_something;
11450 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11452 if (!htab->do_multi_toc)
11455 /* Merge global sym got entries within a toc group. */
11456 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11458 /* And tlsld_got. */
11459 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11461 struct got_entry *ent, *ent2;
11463 if (!is_ppc64_elf (ibfd))
11466 ent = ppc64_tlsld_got (ibfd);
11467 if (!ent->is_indirect
11468 && ent->got.offset != (bfd_vma) -1)
11470 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11472 if (!is_ppc64_elf (ibfd2))
11475 ent2 = ppc64_tlsld_got (ibfd2);
11476 if (!ent2->is_indirect
11477 && ent2->got.offset != (bfd_vma) -1
11478 && elf_gp (ibfd2) == elf_gp (ibfd))
11480 ent2->is_indirect = TRUE;
11481 ent2->got.ent = ent;
11487 /* Zap sizes of got sections. */
11488 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11489 htab->elf.irelplt->size -= htab->got_reli_size;
11490 htab->got_reli_size = 0;
11492 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11494 asection *got, *relgot;
11496 if (!is_ppc64_elf (ibfd))
11499 got = ppc64_elf_tdata (ibfd)->got;
11502 got->rawsize = got->size;
11504 relgot = ppc64_elf_tdata (ibfd)->relgot;
11505 relgot->rawsize = relgot->size;
11510 /* Now reallocate the got, local syms first. We don't need to
11511 allocate section contents again since we never increase size. */
11512 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11514 struct got_entry **lgot_ents;
11515 struct got_entry **end_lgot_ents;
11516 struct plt_entry **local_plt;
11517 struct plt_entry **end_local_plt;
11518 unsigned char *lgot_masks;
11519 bfd_size_type locsymcount;
11520 Elf_Internal_Shdr *symtab_hdr;
11523 if (!is_ppc64_elf (ibfd))
11526 lgot_ents = elf_local_got_ents (ibfd);
11530 symtab_hdr = &elf_symtab_hdr (ibfd);
11531 locsymcount = symtab_hdr->sh_info;
11532 end_lgot_ents = lgot_ents + locsymcount;
11533 local_plt = (struct plt_entry **) end_lgot_ents;
11534 end_local_plt = local_plt + locsymcount;
11535 lgot_masks = (unsigned char *) end_local_plt;
11536 s = ppc64_elf_tdata (ibfd)->got;
11537 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11539 struct got_entry *ent;
11541 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11543 unsigned int ent_size = 8;
11544 unsigned int rel_size = sizeof (Elf64_External_Rela);
11546 ent->got.offset = s->size;
11547 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11552 s->size += ent_size;
11553 if ((*lgot_masks & PLT_IFUNC) != 0)
11555 htab->elf.irelplt->size += rel_size;
11556 htab->got_reli_size += rel_size;
11558 else if (bfd_link_pic (info))
11560 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11561 srel->size += rel_size;
11567 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11569 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11571 struct got_entry *ent;
11573 if (!is_ppc64_elf (ibfd))
11576 ent = ppc64_tlsld_got (ibfd);
11577 if (!ent->is_indirect
11578 && ent->got.offset != (bfd_vma) -1)
11580 asection *s = ppc64_elf_tdata (ibfd)->got;
11581 ent->got.offset = s->size;
11583 if (bfd_link_pic (info))
11585 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11586 srel->size += sizeof (Elf64_External_Rela);
11591 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11592 if (!done_something)
11593 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11597 if (!is_ppc64_elf (ibfd))
11600 got = ppc64_elf_tdata (ibfd)->got;
11603 done_something = got->rawsize != got->size;
11604 if (done_something)
11609 if (done_something)
11610 (*htab->params->layout_sections_again) ();
11612 /* Set up for second pass over toc sections to recalculate elf_gp
11613 on input sections. */
11614 htab->toc_bfd = NULL;
11615 htab->toc_first_sec = NULL;
11616 htab->second_toc_pass = TRUE;
11617 return done_something;
11620 /* Called after second pass of multitoc partitioning. */
11623 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11625 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11627 /* After the second pass, toc_curr tracks the TOC offset used
11628 for code sections below in ppc64_elf_next_input_section. */
11629 htab->toc_curr = TOC_BASE_OFF;
11632 /* No toc references were found in ISEC. If the code in ISEC makes no
11633 calls, then there's no need to use toc adjusting stubs when branching
11634 into ISEC. Actually, indirect calls from ISEC are OK as they will
11635 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11636 needed, and 2 if a cyclical call-graph was found but no other reason
11637 for a stub was detected. If called from the top level, a return of
11638 2 means the same as a return of 0. */
11641 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11645 /* Mark this section as checked. */
11646 isec->call_check_done = 1;
11648 /* We know none of our code bearing sections will need toc stubs. */
11649 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11652 if (isec->size == 0)
11655 if (isec->output_section == NULL)
11659 if (isec->reloc_count != 0)
11661 Elf_Internal_Rela *relstart, *rel;
11662 Elf_Internal_Sym *local_syms;
11663 struct ppc_link_hash_table *htab;
11665 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11666 info->keep_memory);
11667 if (relstart == NULL)
11670 /* Look for branches to outside of this section. */
11672 htab = ppc_hash_table (info);
11676 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11678 enum elf_ppc64_reloc_type r_type;
11679 unsigned long r_symndx;
11680 struct elf_link_hash_entry *h;
11681 struct ppc_link_hash_entry *eh;
11682 Elf_Internal_Sym *sym;
11684 struct _opd_sec_data *opd;
11688 r_type = ELF64_R_TYPE (rel->r_info);
11689 if (r_type != R_PPC64_REL24
11690 && r_type != R_PPC64_REL14
11691 && r_type != R_PPC64_REL14_BRTAKEN
11692 && r_type != R_PPC64_REL14_BRNTAKEN)
11695 r_symndx = ELF64_R_SYM (rel->r_info);
11696 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11703 /* Calls to dynamic lib functions go through a plt call stub
11705 eh = (struct ppc_link_hash_entry *) h;
11707 && (eh->elf.plt.plist != NULL
11709 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11715 if (sym_sec == NULL)
11716 /* Ignore other undefined symbols. */
11719 /* Assume branches to other sections not included in the
11720 link need stubs too, to cover -R and absolute syms. */
11721 if (sym_sec->output_section == NULL)
11728 sym_value = sym->st_value;
11731 if (h->root.type != bfd_link_hash_defined
11732 && h->root.type != bfd_link_hash_defweak)
11734 sym_value = h->root.u.def.value;
11736 sym_value += rel->r_addend;
11738 /* If this branch reloc uses an opd sym, find the code section. */
11739 opd = get_opd_info (sym_sec);
11742 if (h == NULL && opd->adjust != NULL)
11746 adjust = opd->adjust[OPD_NDX (sym_value)];
11748 /* Assume deleted functions won't ever be called. */
11750 sym_value += adjust;
11753 dest = opd_entry_value (sym_sec, sym_value,
11754 &sym_sec, NULL, FALSE);
11755 if (dest == (bfd_vma) -1)
11760 + sym_sec->output_offset
11761 + sym_sec->output_section->vma);
11763 /* Ignore branch to self. */
11764 if (sym_sec == isec)
11767 /* If the called function uses the toc, we need a stub. */
11768 if (sym_sec->has_toc_reloc
11769 || sym_sec->makes_toc_func_call)
11775 /* Assume any branch that needs a long branch stub might in fact
11776 need a plt_branch stub. A plt_branch stub uses r2. */
11777 else if (dest - (isec->output_offset
11778 + isec->output_section->vma
11779 + rel->r_offset) + (1 << 25)
11780 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11788 /* If calling back to a section in the process of being
11789 tested, we can't say for sure that no toc adjusting stubs
11790 are needed, so don't return zero. */
11791 else if (sym_sec->call_check_in_progress)
11794 /* Branches to another section that itself doesn't have any TOC
11795 references are OK. Recursively call ourselves to check. */
11796 else if (!sym_sec->call_check_done)
11800 /* Mark current section as indeterminate, so that other
11801 sections that call back to current won't be marked as
11803 isec->call_check_in_progress = 1;
11804 recur = toc_adjusting_stub_needed (info, sym_sec);
11805 isec->call_check_in_progress = 0;
11816 if (local_syms != NULL
11817 && (elf_symtab_hdr (isec->owner).contents
11818 != (unsigned char *) local_syms))
11820 if (elf_section_data (isec)->relocs != relstart)
11825 && isec->map_head.s != NULL
11826 && (strcmp (isec->output_section->name, ".init") == 0
11827 || strcmp (isec->output_section->name, ".fini") == 0))
11829 if (isec->map_head.s->has_toc_reloc
11830 || isec->map_head.s->makes_toc_func_call)
11832 else if (!isec->map_head.s->call_check_done)
11835 isec->call_check_in_progress = 1;
11836 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11837 isec->call_check_in_progress = 0;
11844 isec->makes_toc_func_call = 1;
11849 /* The linker repeatedly calls this function for each input section,
11850 in the order that input sections are linked into output sections.
11851 Build lists of input sections to determine groupings between which
11852 we may insert linker stubs. */
11855 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11857 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11862 if ((isec->output_section->flags & SEC_CODE) != 0
11863 && isec->output_section->id < htab->sec_info_arr_size)
11865 /* This happens to make the list in reverse order,
11866 which is what we want. */
11867 htab->sec_info[isec->id].u.list
11868 = htab->sec_info[isec->output_section->id].u.list;
11869 htab->sec_info[isec->output_section->id].u.list = isec;
11872 if (htab->multi_toc_needed)
11874 /* Analyse sections that aren't already flagged as needing a
11875 valid toc pointer. Exclude .fixup for the linux kernel.
11876 .fixup contains branches, but only back to the function that
11877 hit an exception. */
11878 if (!(isec->has_toc_reloc
11879 || (isec->flags & SEC_CODE) == 0
11880 || strcmp (isec->name, ".fixup") == 0
11881 || isec->call_check_done))
11883 if (toc_adjusting_stub_needed (info, isec) < 0)
11886 /* Make all sections use the TOC assigned for this object file.
11887 This will be wrong for pasted sections; We fix that in
11888 check_pasted_section(). */
11889 if (elf_gp (isec->owner) != 0)
11890 htab->toc_curr = elf_gp (isec->owner);
11893 htab->sec_info[isec->id].toc_off = htab->toc_curr;
11897 /* Check that all .init and .fini sections use the same toc, if they
11898 have toc relocs. */
11901 check_pasted_section (struct bfd_link_info *info, const char *name)
11903 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11907 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11908 bfd_vma toc_off = 0;
11911 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11912 if (i->has_toc_reloc)
11915 toc_off = htab->sec_info[i->id].toc_off;
11916 else if (toc_off != htab->sec_info[i->id].toc_off)
11921 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11922 if (i->makes_toc_func_call)
11924 toc_off = htab->sec_info[i->id].toc_off;
11928 /* Make sure the whole pasted function uses the same toc offset. */
11930 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11931 htab->sec_info[i->id].toc_off = toc_off;
11937 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11939 return (check_pasted_section (info, ".init")
11940 & check_pasted_section (info, ".fini"));
11943 /* See whether we can group stub sections together. Grouping stub
11944 sections may result in fewer stubs. More importantly, we need to
11945 put all .init* and .fini* stubs at the beginning of the .init or
11946 .fini output sections respectively, because glibc splits the
11947 _init and _fini functions into multiple parts. Putting a stub in
11948 the middle of a function is not a good idea. */
11951 group_sections (struct bfd_link_info *info,
11952 bfd_size_type stub_group_size,
11953 bfd_boolean stubs_always_before_branch)
11955 struct ppc_link_hash_table *htab;
11957 bfd_size_type stub14_group_size;
11958 bfd_boolean suppress_size_errors;
11960 htab = ppc_hash_table (info);
11964 suppress_size_errors = FALSE;
11965 stub14_group_size = stub_group_size >> 10;
11966 if (stub_group_size == 1)
11968 /* Default values. */
11969 if (stubs_always_before_branch)
11971 stub_group_size = 0x1e00000;
11972 stub14_group_size = 0x7800;
11976 stub_group_size = 0x1c00000;
11977 stub14_group_size = 0x7000;
11979 suppress_size_errors = TRUE;
11982 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
11986 if (osec->id >= htab->sec_info_arr_size)
11989 tail = htab->sec_info[osec->id].u.list;
11990 while (tail != NULL)
11994 bfd_size_type total;
11995 bfd_boolean big_sec;
11997 struct map_stub *group;
12000 total = tail->size;
12001 big_sec = total > (ppc64_elf_section_data (tail) != NULL
12002 && ppc64_elf_section_data (tail)->has_14bit_branch
12003 ? stub14_group_size : stub_group_size);
12004 if (big_sec && !suppress_size_errors)
12005 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
12006 tail->owner, tail);
12007 curr_toc = htab->sec_info[tail->id].toc_off;
12009 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12010 && ((total += curr->output_offset - prev->output_offset)
12011 < (ppc64_elf_section_data (prev) != NULL
12012 && ppc64_elf_section_data (prev)->has_14bit_branch
12013 ? stub14_group_size : stub_group_size))
12014 && htab->sec_info[prev->id].toc_off == curr_toc)
12017 /* OK, the size from the start of CURR to the end is less
12018 than stub_group_size and thus can be handled by one stub
12019 section. (or the tail section is itself larger than
12020 stub_group_size, in which case we may be toast.) We
12021 should really be keeping track of the total size of stubs
12022 added here, as stubs contribute to the final output
12023 section size. That's a little tricky, and this way will
12024 only break if stubs added make the total size more than
12025 2^25, ie. for the default stub_group_size, if stubs total
12026 more than 2097152 bytes, or nearly 75000 plt call stubs. */
12027 group = bfd_alloc (curr->owner, sizeof (*group));
12030 group->link_sec = curr;
12031 group->stub_sec = NULL;
12032 group->needs_save_res = 0;
12033 group->next = htab->group;
12034 htab->group = group;
12037 prev = htab->sec_info[tail->id].u.list;
12038 /* Set up this stub group. */
12039 htab->sec_info[tail->id].u.group = group;
12041 while (tail != curr && (tail = prev) != NULL);
12043 /* But wait, there's more! Input sections up to stub_group_size
12044 bytes before the stub section can be handled by it too.
12045 Don't do this if we have a really large section after the
12046 stubs, as adding more stubs increases the chance that
12047 branches may not reach into the stub section. */
12048 if (!stubs_always_before_branch && !big_sec)
12051 while (prev != NULL
12052 && ((total += tail->output_offset - prev->output_offset)
12053 < (ppc64_elf_section_data (prev) != NULL
12054 && ppc64_elf_section_data (prev)->has_14bit_branch
12055 ? stub14_group_size : stub_group_size))
12056 && htab->sec_info[prev->id].toc_off == curr_toc)
12059 prev = htab->sec_info[tail->id].u.list;
12060 htab->sec_info[tail->id].u.group = group;
12069 static const unsigned char glink_eh_frame_cie[] =
12071 0, 0, 0, 16, /* length. */
12072 0, 0, 0, 0, /* id. */
12073 1, /* CIE version. */
12074 'z', 'R', 0, /* Augmentation string. */
12075 4, /* Code alignment. */
12076 0x78, /* Data alignment. */
12078 1, /* Augmentation size. */
12079 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12080 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12084 /* Stripping output sections is normally done before dynamic section
12085 symbols have been allocated. This function is called later, and
12086 handles cases like htab->brlt which is mapped to its own output
12090 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12092 if (isec->size == 0
12093 && isec->output_section->size == 0
12094 && !(isec->output_section->flags & SEC_KEEP)
12095 && !bfd_section_removed_from_list (info->output_bfd,
12096 isec->output_section)
12097 && elf_section_data (isec->output_section)->dynindx == 0)
12099 isec->output_section->flags |= SEC_EXCLUDE;
12100 bfd_section_list_remove (info->output_bfd, isec->output_section);
12101 info->output_bfd->section_count--;
12105 /* Determine and set the size of the stub section for a final link.
12107 The basic idea here is to examine all the relocations looking for
12108 PC-relative calls to a target that is unreachable with a "bl"
12112 ppc64_elf_size_stubs (struct bfd_link_info *info)
12114 bfd_size_type stub_group_size;
12115 bfd_boolean stubs_always_before_branch;
12116 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12121 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12122 htab->params->plt_thread_safe = 1;
12123 if (!htab->opd_abi)
12124 htab->params->plt_thread_safe = 0;
12125 else if (htab->params->plt_thread_safe == -1)
12127 static const char *const thread_starter[] =
12131 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12133 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12134 "mq_notify", "create_timer",
12139 "GOMP_parallel_start",
12140 "GOMP_parallel_loop_static",
12141 "GOMP_parallel_loop_static_start",
12142 "GOMP_parallel_loop_dynamic",
12143 "GOMP_parallel_loop_dynamic_start",
12144 "GOMP_parallel_loop_guided",
12145 "GOMP_parallel_loop_guided_start",
12146 "GOMP_parallel_loop_runtime",
12147 "GOMP_parallel_loop_runtime_start",
12148 "GOMP_parallel_sections",
12149 "GOMP_parallel_sections_start",
12155 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12157 struct elf_link_hash_entry *h;
12158 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12159 FALSE, FALSE, TRUE);
12160 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12161 if (htab->params->plt_thread_safe)
12165 stubs_always_before_branch = htab->params->group_size < 0;
12166 if (htab->params->group_size < 0)
12167 stub_group_size = -htab->params->group_size;
12169 stub_group_size = htab->params->group_size;
12171 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12177 unsigned int bfd_indx;
12178 struct map_stub *group;
12179 asection *stub_sec;
12181 htab->stub_iteration += 1;
12183 for (input_bfd = info->input_bfds, bfd_indx = 0;
12185 input_bfd = input_bfd->link.next, bfd_indx++)
12187 Elf_Internal_Shdr *symtab_hdr;
12189 Elf_Internal_Sym *local_syms = NULL;
12191 if (!is_ppc64_elf (input_bfd))
12194 /* We'll need the symbol table in a second. */
12195 symtab_hdr = &elf_symtab_hdr (input_bfd);
12196 if (symtab_hdr->sh_info == 0)
12199 /* Walk over each section attached to the input bfd. */
12200 for (section = input_bfd->sections;
12202 section = section->next)
12204 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12206 /* If there aren't any relocs, then there's nothing more
12208 if ((section->flags & SEC_RELOC) == 0
12209 || (section->flags & SEC_ALLOC) == 0
12210 || (section->flags & SEC_LOAD) == 0
12211 || (section->flags & SEC_CODE) == 0
12212 || section->reloc_count == 0)
12215 /* If this section is a link-once section that will be
12216 discarded, then don't create any stubs. */
12217 if (section->output_section == NULL
12218 || section->output_section->owner != info->output_bfd)
12221 /* Get the relocs. */
12223 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12224 info->keep_memory);
12225 if (internal_relocs == NULL)
12226 goto error_ret_free_local;
12228 /* Now examine each relocation. */
12229 irela = internal_relocs;
12230 irelaend = irela + section->reloc_count;
12231 for (; irela < irelaend; irela++)
12233 enum elf_ppc64_reloc_type r_type;
12234 unsigned int r_indx;
12235 enum ppc_stub_type stub_type;
12236 struct ppc_stub_hash_entry *stub_entry;
12237 asection *sym_sec, *code_sec;
12238 bfd_vma sym_value, code_value;
12239 bfd_vma destination;
12240 unsigned long local_off;
12241 bfd_boolean ok_dest;
12242 struct ppc_link_hash_entry *hash;
12243 struct ppc_link_hash_entry *fdh;
12244 struct elf_link_hash_entry *h;
12245 Elf_Internal_Sym *sym;
12247 const asection *id_sec;
12248 struct _opd_sec_data *opd;
12249 struct plt_entry *plt_ent;
12251 r_type = ELF64_R_TYPE (irela->r_info);
12252 r_indx = ELF64_R_SYM (irela->r_info);
12254 if (r_type >= R_PPC64_max)
12256 bfd_set_error (bfd_error_bad_value);
12257 goto error_ret_free_internal;
12260 /* Only look for stubs on branch instructions. */
12261 if (r_type != R_PPC64_REL24
12262 && r_type != R_PPC64_REL14
12263 && r_type != R_PPC64_REL14_BRTAKEN
12264 && r_type != R_PPC64_REL14_BRNTAKEN)
12267 /* Now determine the call target, its name, value,
12269 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12270 r_indx, input_bfd))
12271 goto error_ret_free_internal;
12272 hash = (struct ppc_link_hash_entry *) h;
12279 sym_value = sym->st_value;
12280 if (sym_sec != NULL
12281 && sym_sec->output_section != NULL)
12284 else if (hash->elf.root.type == bfd_link_hash_defined
12285 || hash->elf.root.type == bfd_link_hash_defweak)
12287 sym_value = hash->elf.root.u.def.value;
12288 if (sym_sec->output_section != NULL)
12291 else if (hash->elf.root.type == bfd_link_hash_undefweak
12292 || hash->elf.root.type == bfd_link_hash_undefined)
12294 /* Recognise an old ABI func code entry sym, and
12295 use the func descriptor sym instead if it is
12297 if (hash->elf.root.root.string[0] == '.'
12298 && (fdh = lookup_fdh (hash, htab)) != NULL)
12300 if (fdh->elf.root.type == bfd_link_hash_defined
12301 || fdh->elf.root.type == bfd_link_hash_defweak)
12303 sym_sec = fdh->elf.root.u.def.section;
12304 sym_value = fdh->elf.root.u.def.value;
12305 if (sym_sec->output_section != NULL)
12314 bfd_set_error (bfd_error_bad_value);
12315 goto error_ret_free_internal;
12322 sym_value += irela->r_addend;
12323 destination = (sym_value
12324 + sym_sec->output_offset
12325 + sym_sec->output_section->vma);
12326 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12331 code_sec = sym_sec;
12332 code_value = sym_value;
12333 opd = get_opd_info (sym_sec);
12338 if (hash == NULL && opd->adjust != NULL)
12340 long adjust = opd->adjust[OPD_NDX (sym_value)];
12343 code_value += adjust;
12344 sym_value += adjust;
12346 dest = opd_entry_value (sym_sec, sym_value,
12347 &code_sec, &code_value, FALSE);
12348 if (dest != (bfd_vma) -1)
12350 destination = dest;
12353 /* Fixup old ABI sym to point at code
12355 hash->elf.root.type = bfd_link_hash_defweak;
12356 hash->elf.root.u.def.section = code_sec;
12357 hash->elf.root.u.def.value = code_value;
12362 /* Determine what (if any) linker stub is needed. */
12364 stub_type = ppc_type_of_stub (section, irela, &hash,
12365 &plt_ent, destination,
12368 if (stub_type != ppc_stub_plt_call)
12370 /* Check whether we need a TOC adjusting stub.
12371 Since the linker pastes together pieces from
12372 different object files when creating the
12373 _init and _fini functions, it may be that a
12374 call to what looks like a local sym is in
12375 fact a call needing a TOC adjustment. */
12376 if (code_sec != NULL
12377 && code_sec->output_section != NULL
12378 && (htab->sec_info[code_sec->id].toc_off
12379 != htab->sec_info[section->id].toc_off)
12380 && (code_sec->has_toc_reloc
12381 || code_sec->makes_toc_func_call))
12382 stub_type = ppc_stub_long_branch_r2off;
12385 if (stub_type == ppc_stub_none)
12388 /* __tls_get_addr calls might be eliminated. */
12389 if (stub_type != ppc_stub_plt_call
12391 && (hash == htab->tls_get_addr
12392 || hash == htab->tls_get_addr_fd)
12393 && section->has_tls_reloc
12394 && irela != internal_relocs)
12396 /* Get tls info. */
12397 unsigned char *tls_mask;
12399 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12400 irela - 1, input_bfd))
12401 goto error_ret_free_internal;
12402 if (*tls_mask != 0)
12406 if (stub_type == ppc_stub_plt_call
12407 && irela + 1 < irelaend
12408 && irela[1].r_offset == irela->r_offset + 4
12409 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12411 if (!tocsave_find (htab, INSERT,
12412 &local_syms, irela + 1, input_bfd))
12413 goto error_ret_free_internal;
12415 else if (stub_type == ppc_stub_plt_call)
12416 stub_type = ppc_stub_plt_call_r2save;
12418 /* Support for grouping stub sections. */
12419 id_sec = htab->sec_info[section->id].u.group->link_sec;
12421 /* Get the name of this stub. */
12422 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12424 goto error_ret_free_internal;
12426 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12427 stub_name, FALSE, FALSE);
12428 if (stub_entry != NULL)
12430 /* The proper stub has already been created. */
12432 if (stub_type == ppc_stub_plt_call_r2save)
12433 stub_entry->stub_type = stub_type;
12437 stub_entry = ppc_add_stub (stub_name, section, info);
12438 if (stub_entry == NULL)
12441 error_ret_free_internal:
12442 if (elf_section_data (section)->relocs == NULL)
12443 free (internal_relocs);
12444 error_ret_free_local:
12445 if (local_syms != NULL
12446 && (symtab_hdr->contents
12447 != (unsigned char *) local_syms))
12452 stub_entry->stub_type = stub_type;
12453 if (stub_type != ppc_stub_plt_call
12454 && stub_type != ppc_stub_plt_call_r2save)
12456 stub_entry->target_value = code_value;
12457 stub_entry->target_section = code_sec;
12461 stub_entry->target_value = sym_value;
12462 stub_entry->target_section = sym_sec;
12464 stub_entry->h = hash;
12465 stub_entry->plt_ent = plt_ent;
12466 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12468 if (stub_entry->h != NULL)
12469 htab->stub_globals += 1;
12472 /* We're done with the internal relocs, free them. */
12473 if (elf_section_data (section)->relocs != internal_relocs)
12474 free (internal_relocs);
12477 if (local_syms != NULL
12478 && symtab_hdr->contents != (unsigned char *) local_syms)
12480 if (!info->keep_memory)
12483 symtab_hdr->contents = (unsigned char *) local_syms;
12487 /* We may have added some stubs. Find out the new size of the
12489 for (stub_sec = htab->params->stub_bfd->sections;
12491 stub_sec = stub_sec->next)
12492 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12494 stub_sec->rawsize = stub_sec->size;
12495 stub_sec->size = 0;
12496 stub_sec->reloc_count = 0;
12497 stub_sec->flags &= ~SEC_RELOC;
12500 htab->brlt->size = 0;
12501 htab->brlt->reloc_count = 0;
12502 htab->brlt->flags &= ~SEC_RELOC;
12503 if (htab->relbrlt != NULL)
12504 htab->relbrlt->size = 0;
12506 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12508 for (group = htab->group; group != NULL; group = group->next)
12509 if (group->needs_save_res)
12510 group->stub_sec->size += htab->sfpr->size;
12512 if (info->emitrelocations
12513 && htab->glink != NULL && htab->glink->size != 0)
12515 htab->glink->reloc_count = 1;
12516 htab->glink->flags |= SEC_RELOC;
12519 if (htab->glink_eh_frame != NULL
12520 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12521 && htab->glink_eh_frame->output_section->size != 0)
12523 size_t size = 0, align;
12525 for (stub_sec = htab->params->stub_bfd->sections;
12527 stub_sec = stub_sec->next)
12528 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12530 if (htab->glink != NULL && htab->glink->size != 0)
12533 size += sizeof (glink_eh_frame_cie);
12535 align <<= htab->glink_eh_frame->output_section->alignment_power;
12537 size = (size + align) & ~align;
12538 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12539 htab->glink_eh_frame->size = size;
12542 if (htab->params->plt_stub_align != 0)
12543 for (stub_sec = htab->params->stub_bfd->sections;
12545 stub_sec = stub_sec->next)
12546 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12547 stub_sec->size = ((stub_sec->size
12548 + (1 << htab->params->plt_stub_align) - 1)
12549 & -(1 << htab->params->plt_stub_align));
12551 for (stub_sec = htab->params->stub_bfd->sections;
12553 stub_sec = stub_sec->next)
12554 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12555 && stub_sec->rawsize != stub_sec->size)
12558 /* Exit from this loop when no stubs have been added, and no stubs
12559 have changed size. */
12560 if (stub_sec == NULL
12561 && (htab->glink_eh_frame == NULL
12562 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12565 /* Ask the linker to do its stuff. */
12566 (*htab->params->layout_sections_again) ();
12569 if (htab->glink_eh_frame != NULL
12570 && htab->glink_eh_frame->size != 0)
12573 bfd_byte *p, *last_fde;
12574 size_t last_fde_len, size, align, pad;
12575 asection *stub_sec;
12577 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12580 htab->glink_eh_frame->contents = p;
12583 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12584 /* CIE length (rewrite in case little-endian). */
12585 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12586 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12587 p += sizeof (glink_eh_frame_cie);
12589 for (stub_sec = htab->params->stub_bfd->sections;
12591 stub_sec = stub_sec->next)
12592 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12597 bfd_put_32 (htab->elf.dynobj, 20, p);
12600 val = p - htab->glink_eh_frame->contents;
12601 bfd_put_32 (htab->elf.dynobj, val, p);
12603 /* Offset to stub section, written later. */
12605 /* stub section size. */
12606 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12608 /* Augmentation. */
12613 if (htab->glink != NULL && htab->glink->size != 0)
12618 bfd_put_32 (htab->elf.dynobj, 20, p);
12621 val = p - htab->glink_eh_frame->contents;
12622 bfd_put_32 (htab->elf.dynobj, val, p);
12624 /* Offset to .glink, written later. */
12627 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12629 /* Augmentation. */
12632 *p++ = DW_CFA_advance_loc + 1;
12633 *p++ = DW_CFA_register;
12635 *p++ = htab->opd_abi ? 12 : 0;
12636 *p++ = DW_CFA_advance_loc + 4;
12637 *p++ = DW_CFA_restore_extended;
12640 /* Subsume any padding into the last FDE if user .eh_frame
12641 sections are aligned more than glink_eh_frame. Otherwise any
12642 zero padding will be seen as a terminator. */
12643 size = p - htab->glink_eh_frame->contents;
12645 align <<= htab->glink_eh_frame->output_section->alignment_power;
12647 pad = ((size + align) & ~align) - size;
12648 htab->glink_eh_frame->size = size + pad;
12649 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12652 maybe_strip_output (info, htab->brlt);
12653 if (htab->glink_eh_frame != NULL)
12654 maybe_strip_output (info, htab->glink_eh_frame);
12659 /* Called after we have determined section placement. If sections
12660 move, we'll be called again. Provide a value for TOCstart. */
12663 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12666 bfd_vma TOCstart, adjust;
12670 struct elf_link_hash_entry *h;
12671 struct elf_link_hash_table *htab = elf_hash_table (info);
12673 if (is_elf_hash_table (htab)
12674 && htab->hgot != NULL)
12678 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12679 if (is_elf_hash_table (htab))
12683 && h->root.type == bfd_link_hash_defined
12684 && !h->root.linker_def
12685 && (!is_elf_hash_table (htab)
12686 || h->def_regular))
12688 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12689 + h->root.u.def.section->output_offset
12690 + h->root.u.def.section->output_section->vma);
12691 _bfd_set_gp_value (obfd, TOCstart);
12696 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12697 order. The TOC starts where the first of these sections starts. */
12698 s = bfd_get_section_by_name (obfd, ".got");
12699 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12700 s = bfd_get_section_by_name (obfd, ".toc");
12701 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12702 s = bfd_get_section_by_name (obfd, ".tocbss");
12703 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12704 s = bfd_get_section_by_name (obfd, ".plt");
12705 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12707 /* This may happen for
12708 o references to TOC base (SYM@toc / TOC[tc0]) without a
12710 o bad linker script
12711 o --gc-sections and empty TOC sections
12713 FIXME: Warn user? */
12715 /* Look for a likely section. We probably won't even be
12717 for (s = obfd->sections; s != NULL; s = s->next)
12718 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12720 == (SEC_ALLOC | SEC_SMALL_DATA))
12723 for (s = obfd->sections; s != NULL; s = s->next)
12724 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12725 == (SEC_ALLOC | SEC_SMALL_DATA))
12728 for (s = obfd->sections; s != NULL; s = s->next)
12729 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12733 for (s = obfd->sections; s != NULL; s = s->next)
12734 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12740 TOCstart = s->output_section->vma + s->output_offset;
12742 /* Force alignment. */
12743 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12744 TOCstart -= adjust;
12745 _bfd_set_gp_value (obfd, TOCstart);
12747 if (info != NULL && s != NULL)
12749 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12753 if (htab->elf.hgot != NULL)
12755 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12756 htab->elf.hgot->root.u.def.section = s;
12761 struct bfd_link_hash_entry *bh = NULL;
12762 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12763 s, TOC_BASE_OFF - adjust,
12764 NULL, FALSE, FALSE, &bh);
12770 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12771 write out any global entry stubs. */
12774 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12776 struct bfd_link_info *info;
12777 struct ppc_link_hash_table *htab;
12778 struct plt_entry *pent;
12781 if (h->root.type == bfd_link_hash_indirect)
12784 if (!h->pointer_equality_needed)
12787 if (h->def_regular)
12791 htab = ppc_hash_table (info);
12796 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12797 if (pent->plt.offset != (bfd_vma) -1
12798 && pent->addend == 0)
12804 p = s->contents + h->root.u.def.value;
12805 plt = htab->elf.splt;
12806 if (!htab->elf.dynamic_sections_created
12807 || h->dynindx == -1)
12808 plt = htab->elf.iplt;
12809 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12810 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12812 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12814 info->callbacks->einfo
12815 (_("%P: linkage table error against `%T'\n"),
12816 h->root.root.string);
12817 bfd_set_error (bfd_error_bad_value);
12818 htab->stub_error = TRUE;
12821 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12822 if (htab->params->emit_stub_syms)
12824 size_t len = strlen (h->root.root.string);
12825 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12830 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12831 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12834 if (h->root.type == bfd_link_hash_new)
12836 h->root.type = bfd_link_hash_defined;
12837 h->root.u.def.section = s;
12838 h->root.u.def.value = p - s->contents;
12839 h->ref_regular = 1;
12840 h->def_regular = 1;
12841 h->ref_regular_nonweak = 1;
12842 h->forced_local = 1;
12844 h->root.linker_def = 1;
12848 if (PPC_HA (off) != 0)
12850 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12853 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12855 bfd_put_32 (s->owner, MTCTR_R12, p);
12857 bfd_put_32 (s->owner, BCTR, p);
12863 /* Build all the stubs associated with the current output file.
12864 The stubs are kept in a hash table attached to the main linker
12865 hash table. This function is called via gldelf64ppc_finish. */
12868 ppc64_elf_build_stubs (struct bfd_link_info *info,
12871 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12872 struct map_stub *group;
12873 asection *stub_sec;
12875 int stub_sec_count = 0;
12880 /* Allocate memory to hold the linker stubs. */
12881 for (stub_sec = htab->params->stub_bfd->sections;
12883 stub_sec = stub_sec->next)
12884 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12885 && stub_sec->size != 0)
12887 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12888 if (stub_sec->contents == NULL)
12890 /* We want to check that built size is the same as calculated
12891 size. rawsize is a convenient location to use. */
12892 stub_sec->rawsize = stub_sec->size;
12893 stub_sec->size = 0;
12896 if (htab->glink != NULL && htab->glink->size != 0)
12901 /* Build the .glink plt call stub. */
12902 if (htab->params->emit_stub_syms)
12904 struct elf_link_hash_entry *h;
12905 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12906 TRUE, FALSE, FALSE);
12909 if (h->root.type == bfd_link_hash_new)
12911 h->root.type = bfd_link_hash_defined;
12912 h->root.u.def.section = htab->glink;
12913 h->root.u.def.value = 8;
12914 h->ref_regular = 1;
12915 h->def_regular = 1;
12916 h->ref_regular_nonweak = 1;
12917 h->forced_local = 1;
12919 h->root.linker_def = 1;
12922 plt0 = (htab->elf.splt->output_section->vma
12923 + htab->elf.splt->output_offset
12925 if (info->emitrelocations)
12927 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12930 r->r_offset = (htab->glink->output_offset
12931 + htab->glink->output_section->vma);
12932 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12933 r->r_addend = plt0;
12935 p = htab->glink->contents;
12936 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12937 bfd_put_64 (htab->glink->owner, plt0, p);
12941 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12943 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12945 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12947 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12949 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12951 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12953 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12955 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12957 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12959 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12964 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12966 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12968 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12970 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12972 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12974 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12976 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12978 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12980 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12982 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12984 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12986 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12989 bfd_put_32 (htab->glink->owner, BCTR, p);
12991 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12993 bfd_put_32 (htab->glink->owner, NOP, p);
12997 /* Build the .glink lazy link call stubs. */
12999 while (p < htab->glink->contents + htab->glink->rawsize)
13005 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13010 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13012 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13017 bfd_put_32 (htab->glink->owner,
13018 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13023 /* Build .glink global entry stubs. */
13024 if (htab->glink->size > htab->glink->rawsize)
13025 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13028 if (htab->brlt != NULL && htab->brlt->size != 0)
13030 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13032 if (htab->brlt->contents == NULL)
13035 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13037 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13038 htab->relbrlt->size);
13039 if (htab->relbrlt->contents == NULL)
13043 /* Build the stubs as directed by the stub hash table. */
13044 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13046 for (group = htab->group; group != NULL; group = group->next)
13047 if (group->needs_save_res)
13049 stub_sec = group->stub_sec;
13050 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13052 if (htab->params->emit_stub_syms)
13056 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13057 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13060 stub_sec->size += htab->sfpr->size;
13063 if (htab->relbrlt != NULL)
13064 htab->relbrlt->reloc_count = 0;
13066 if (htab->params->plt_stub_align != 0)
13067 for (stub_sec = htab->params->stub_bfd->sections;
13069 stub_sec = stub_sec->next)
13070 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13071 stub_sec->size = ((stub_sec->size
13072 + (1 << htab->params->plt_stub_align) - 1)
13073 & -(1 << htab->params->plt_stub_align));
13075 for (stub_sec = htab->params->stub_bfd->sections;
13077 stub_sec = stub_sec->next)
13078 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13080 stub_sec_count += 1;
13081 if (stub_sec->rawsize != stub_sec->size)
13085 /* Note that the glink_eh_frame check here is not only testing that
13086 the generated size matched the calculated size but also that
13087 bfd_elf_discard_info didn't make any changes to the section. */
13088 if (stub_sec != NULL
13089 || (htab->glink_eh_frame != NULL
13090 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13092 htab->stub_error = TRUE;
13093 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13096 if (htab->stub_error)
13101 *stats = bfd_malloc (500);
13102 if (*stats == NULL)
13105 sprintf (*stats, _("linker stubs in %u group%s\n"
13107 " toc adjust %lu\n"
13108 " long branch %lu\n"
13109 " long toc adj %lu\n"
13111 " plt call toc %lu\n"
13112 " global entry %lu"),
13114 stub_sec_count == 1 ? "" : "s",
13115 htab->stub_count[ppc_stub_long_branch - 1],
13116 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13117 htab->stub_count[ppc_stub_plt_branch - 1],
13118 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13119 htab->stub_count[ppc_stub_plt_call - 1],
13120 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13121 htab->stub_count[ppc_stub_global_entry - 1]);
13126 /* This function undoes the changes made by add_symbol_adjust. */
13129 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13131 struct ppc_link_hash_entry *eh;
13133 if (h->root.type == bfd_link_hash_indirect)
13136 eh = (struct ppc_link_hash_entry *) h;
13137 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13140 eh->elf.root.type = bfd_link_hash_undefined;
13145 ppc64_elf_restore_symbols (struct bfd_link_info *info)
13147 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13150 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
13153 /* What to do when ld finds relocations against symbols defined in
13154 discarded sections. */
13156 static unsigned int
13157 ppc64_elf_action_discarded (asection *sec)
13159 if (strcmp (".opd", sec->name) == 0)
13162 if (strcmp (".toc", sec->name) == 0)
13165 if (strcmp (".toc1", sec->name) == 0)
13168 return _bfd_elf_default_action_discarded (sec);
13171 /* The RELOCATE_SECTION function is called by the ELF backend linker
13172 to handle the relocations for a section.
13174 The relocs are always passed as Rela structures; if the section
13175 actually uses Rel structures, the r_addend field will always be
13178 This function is responsible for adjust the section contents as
13179 necessary, and (if using Rela relocs and generating a
13180 relocatable output file) adjusting the reloc addend as
13183 This function does not have to worry about setting the reloc
13184 address or the reloc symbol index.
13186 LOCAL_SYMS is a pointer to the swapped in local symbols.
13188 LOCAL_SECTIONS is an array giving the section in the input file
13189 corresponding to the st_shndx field of each local symbol.
13191 The global hash table entry for the global symbols can be found
13192 via elf_sym_hashes (input_bfd).
13194 When generating relocatable output, this function must handle
13195 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13196 going to be the section symbol corresponding to the output
13197 section, which means that the addend must be adjusted
13201 ppc64_elf_relocate_section (bfd *output_bfd,
13202 struct bfd_link_info *info,
13204 asection *input_section,
13205 bfd_byte *contents,
13206 Elf_Internal_Rela *relocs,
13207 Elf_Internal_Sym *local_syms,
13208 asection **local_sections)
13210 struct ppc_link_hash_table *htab;
13211 Elf_Internal_Shdr *symtab_hdr;
13212 struct elf_link_hash_entry **sym_hashes;
13213 Elf_Internal_Rela *rel;
13214 Elf_Internal_Rela *wrel;
13215 Elf_Internal_Rela *relend;
13216 Elf_Internal_Rela outrel;
13218 struct got_entry **local_got_ents;
13220 bfd_boolean ret = TRUE;
13221 bfd_boolean is_opd;
13222 /* Assume 'at' branch hints. */
13223 bfd_boolean is_isa_v2 = TRUE;
13224 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13226 /* Initialize howto table if needed. */
13227 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13230 htab = ppc_hash_table (info);
13234 /* Don't relocate stub sections. */
13235 if (input_section->owner == htab->params->stub_bfd)
13238 BFD_ASSERT (is_ppc64_elf (input_bfd));
13240 local_got_ents = elf_local_got_ents (input_bfd);
13241 TOCstart = elf_gp (output_bfd);
13242 symtab_hdr = &elf_symtab_hdr (input_bfd);
13243 sym_hashes = elf_sym_hashes (input_bfd);
13244 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13246 rel = wrel = relocs;
13247 relend = relocs + input_section->reloc_count;
13248 for (; rel < relend; wrel++, rel++)
13250 enum elf_ppc64_reloc_type r_type;
13252 bfd_reloc_status_type r;
13253 Elf_Internal_Sym *sym;
13255 struct elf_link_hash_entry *h_elf;
13256 struct ppc_link_hash_entry *h;
13257 struct ppc_link_hash_entry *fdh;
13258 const char *sym_name;
13259 unsigned long r_symndx, toc_symndx;
13260 bfd_vma toc_addend;
13261 unsigned char tls_mask, tls_gd, tls_type;
13262 unsigned char sym_type;
13263 bfd_vma relocation;
13264 bfd_boolean unresolved_reloc;
13265 bfd_boolean warned;
13266 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13269 struct ppc_stub_hash_entry *stub_entry;
13270 bfd_vma max_br_offset;
13272 Elf_Internal_Rela orig_rel;
13273 reloc_howto_type *howto;
13274 struct reloc_howto_struct alt_howto;
13279 r_type = ELF64_R_TYPE (rel->r_info);
13280 r_symndx = ELF64_R_SYM (rel->r_info);
13282 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13283 symbol of the previous ADDR64 reloc. The symbol gives us the
13284 proper TOC base to use. */
13285 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13287 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13289 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13295 unresolved_reloc = FALSE;
13298 if (r_symndx < symtab_hdr->sh_info)
13300 /* It's a local symbol. */
13301 struct _opd_sec_data *opd;
13303 sym = local_syms + r_symndx;
13304 sec = local_sections[r_symndx];
13305 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13306 sym_type = ELF64_ST_TYPE (sym->st_info);
13307 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13308 opd = get_opd_info (sec);
13309 if (opd != NULL && opd->adjust != NULL)
13311 long adjust = opd->adjust[OPD_NDX (sym->st_value
13317 /* If this is a relocation against the opd section sym
13318 and we have edited .opd, adjust the reloc addend so
13319 that ld -r and ld --emit-relocs output is correct.
13320 If it is a reloc against some other .opd symbol,
13321 then the symbol value will be adjusted later. */
13322 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13323 rel->r_addend += adjust;
13325 relocation += adjust;
13331 bfd_boolean ignored;
13333 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13334 r_symndx, symtab_hdr, sym_hashes,
13335 h_elf, sec, relocation,
13336 unresolved_reloc, warned, ignored);
13337 sym_name = h_elf->root.root.string;
13338 sym_type = h_elf->type;
13340 && sec->owner == output_bfd
13341 && strcmp (sec->name, ".opd") == 0)
13343 /* This is a symbol defined in a linker script. All
13344 such are defined in output sections, even those
13345 defined by simple assignment from a symbol defined in
13346 an input section. Transfer the symbol to an
13347 appropriate input .opd section, so that a branch to
13348 this symbol will be mapped to the location specified
13349 by the opd entry. */
13350 struct bfd_link_order *lo;
13351 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13352 if (lo->type == bfd_indirect_link_order)
13354 asection *isec = lo->u.indirect.section;
13355 if (h_elf->root.u.def.value >= isec->output_offset
13356 && h_elf->root.u.def.value < (isec->output_offset
13359 h_elf->root.u.def.value -= isec->output_offset;
13360 h_elf->root.u.def.section = isec;
13367 h = (struct ppc_link_hash_entry *) h_elf;
13369 if (sec != NULL && discarded_section (sec))
13371 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13372 input_bfd, input_section,
13373 contents + rel->r_offset);
13374 wrel->r_offset = rel->r_offset;
13376 wrel->r_addend = 0;
13378 /* For ld -r, remove relocations in debug sections against
13379 sections defined in discarded sections. Not done for
13380 non-debug to preserve relocs in .eh_frame which the
13381 eh_frame editing code expects to be present. */
13382 if (bfd_link_relocatable (info)
13383 && (input_section->flags & SEC_DEBUGGING))
13389 if (bfd_link_relocatable (info))
13392 if (h != NULL && &h->elf == htab->elf.hgot)
13394 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13395 sec = bfd_abs_section_ptr;
13396 unresolved_reloc = FALSE;
13399 /* TLS optimizations. Replace instruction sequences and relocs
13400 based on information we collected in tls_optimize. We edit
13401 RELOCS so that --emit-relocs will output something sensible
13402 for the final instruction stream. */
13407 tls_mask = h->tls_mask;
13408 else if (local_got_ents != NULL)
13410 struct plt_entry **local_plt = (struct plt_entry **)
13411 (local_got_ents + symtab_hdr->sh_info);
13412 unsigned char *lgot_masks = (unsigned char *)
13413 (local_plt + symtab_hdr->sh_info);
13414 tls_mask = lgot_masks[r_symndx];
13417 && (r_type == R_PPC64_TLS
13418 || r_type == R_PPC64_TLSGD
13419 || r_type == R_PPC64_TLSLD))
13421 /* Check for toc tls entries. */
13422 unsigned char *toc_tls;
13424 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13425 &local_syms, rel, input_bfd))
13429 tls_mask = *toc_tls;
13432 /* Check that tls relocs are used with tls syms, and non-tls
13433 relocs are used with non-tls syms. */
13434 if (r_symndx != STN_UNDEF
13435 && r_type != R_PPC64_NONE
13437 || h->elf.root.type == bfd_link_hash_defined
13438 || h->elf.root.type == bfd_link_hash_defweak)
13439 && (IS_PPC64_TLS_RELOC (r_type)
13440 != (sym_type == STT_TLS
13441 || (sym_type == STT_SECTION
13442 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13445 && (r_type == R_PPC64_TLS
13446 || r_type == R_PPC64_TLSGD
13447 || r_type == R_PPC64_TLSLD))
13448 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13451 info->callbacks->einfo
13452 (!IS_PPC64_TLS_RELOC (r_type)
13453 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13454 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13455 input_bfd, input_section, rel->r_offset,
13456 ppc64_elf_howto_table[r_type]->name,
13460 /* Ensure reloc mapping code below stays sane. */
13461 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13462 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13463 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13464 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13465 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13466 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13467 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13468 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13469 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13470 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13478 case R_PPC64_LO_DS_OPT:
13479 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13480 if ((insn & (0x3f << 26)) != 58u << 26)
13482 insn += (14u << 26) - (58u << 26);
13483 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13484 r_type = R_PPC64_TOC16_LO;
13485 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13488 case R_PPC64_TOC16:
13489 case R_PPC64_TOC16_LO:
13490 case R_PPC64_TOC16_DS:
13491 case R_PPC64_TOC16_LO_DS:
13493 /* Check for toc tls entries. */
13494 unsigned char *toc_tls;
13497 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13498 &local_syms, rel, input_bfd);
13504 tls_mask = *toc_tls;
13505 if (r_type == R_PPC64_TOC16_DS
13506 || r_type == R_PPC64_TOC16_LO_DS)
13509 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13514 /* If we found a GD reloc pair, then we might be
13515 doing a GD->IE transition. */
13518 tls_gd = TLS_TPRELGD;
13519 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13522 else if (retval == 3)
13524 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13532 case R_PPC64_GOT_TPREL16_HI:
13533 case R_PPC64_GOT_TPREL16_HA:
13535 && (tls_mask & TLS_TPREL) == 0)
13537 rel->r_offset -= d_offset;
13538 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13539 r_type = R_PPC64_NONE;
13540 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13544 case R_PPC64_GOT_TPREL16_DS:
13545 case R_PPC64_GOT_TPREL16_LO_DS:
13547 && (tls_mask & TLS_TPREL) == 0)
13550 insn = bfd_get_32 (output_bfd,
13551 contents + rel->r_offset - d_offset);
13553 insn |= 0x3c0d0000; /* addis 0,13,0 */
13554 bfd_put_32 (output_bfd, insn,
13555 contents + rel->r_offset - d_offset);
13556 r_type = R_PPC64_TPREL16_HA;
13557 if (toc_symndx != 0)
13559 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13560 rel->r_addend = toc_addend;
13561 /* We changed the symbol. Start over in order to
13562 get h, sym, sec etc. right. */
13566 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13572 && (tls_mask & TLS_TPREL) == 0)
13574 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13575 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13578 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13579 /* Was PPC64_TLS which sits on insn boundary, now
13580 PPC64_TPREL16_LO which is at low-order half-word. */
13581 rel->r_offset += d_offset;
13582 r_type = R_PPC64_TPREL16_LO;
13583 if (toc_symndx != 0)
13585 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13586 rel->r_addend = toc_addend;
13587 /* We changed the symbol. Start over in order to
13588 get h, sym, sec etc. right. */
13592 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13596 case R_PPC64_GOT_TLSGD16_HI:
13597 case R_PPC64_GOT_TLSGD16_HA:
13598 tls_gd = TLS_TPRELGD;
13599 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13603 case R_PPC64_GOT_TLSLD16_HI:
13604 case R_PPC64_GOT_TLSLD16_HA:
13605 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13608 if ((tls_mask & tls_gd) != 0)
13609 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13610 + R_PPC64_GOT_TPREL16_DS);
13613 rel->r_offset -= d_offset;
13614 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13615 r_type = R_PPC64_NONE;
13617 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13621 case R_PPC64_GOT_TLSGD16:
13622 case R_PPC64_GOT_TLSGD16_LO:
13623 tls_gd = TLS_TPRELGD;
13624 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13628 case R_PPC64_GOT_TLSLD16:
13629 case R_PPC64_GOT_TLSLD16_LO:
13630 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13632 unsigned int insn1, insn2, insn3;
13636 offset = (bfd_vma) -1;
13637 /* If not using the newer R_PPC64_TLSGD/LD to mark
13638 __tls_get_addr calls, we must trust that the call
13639 stays with its arg setup insns, ie. that the next
13640 reloc is the __tls_get_addr call associated with
13641 the current reloc. Edit both insns. */
13642 if (input_section->has_tls_get_addr_call
13643 && rel + 1 < relend
13644 && branch_reloc_hash_match (input_bfd, rel + 1,
13645 htab->tls_get_addr,
13646 htab->tls_get_addr_fd))
13647 offset = rel[1].r_offset;
13648 /* We read the low GOT_TLS (or TOC16) insn because we
13649 need to keep the destination reg. It may be
13650 something other than the usual r3, and moved to r3
13651 before the call by intervening code. */
13652 insn1 = bfd_get_32 (output_bfd,
13653 contents + rel->r_offset - d_offset);
13654 if ((tls_mask & tls_gd) != 0)
13657 insn1 &= (0x1f << 21) | (0x1f << 16);
13658 insn1 |= 58 << 26; /* ld */
13659 insn2 = 0x7c636a14; /* add 3,3,13 */
13660 if (offset != (bfd_vma) -1)
13661 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13662 if ((tls_mask & TLS_EXPLICIT) == 0)
13663 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13664 + R_PPC64_GOT_TPREL16_DS);
13666 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13667 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13672 insn1 &= 0x1f << 21;
13673 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13674 insn2 = 0x38630000; /* addi 3,3,0 */
13677 /* Was an LD reloc. */
13679 sec = local_sections[toc_symndx];
13681 r_symndx < symtab_hdr->sh_info;
13683 if (local_sections[r_symndx] == sec)
13685 if (r_symndx >= symtab_hdr->sh_info)
13686 r_symndx = STN_UNDEF;
13687 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13688 if (r_symndx != STN_UNDEF)
13689 rel->r_addend -= (local_syms[r_symndx].st_value
13690 + sec->output_offset
13691 + sec->output_section->vma);
13693 else if (toc_symndx != 0)
13695 r_symndx = toc_symndx;
13696 rel->r_addend = toc_addend;
13698 r_type = R_PPC64_TPREL16_HA;
13699 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13700 if (offset != (bfd_vma) -1)
13702 rel[1].r_info = ELF64_R_INFO (r_symndx,
13703 R_PPC64_TPREL16_LO);
13704 rel[1].r_offset = offset + d_offset;
13705 rel[1].r_addend = rel->r_addend;
13708 bfd_put_32 (output_bfd, insn1,
13709 contents + rel->r_offset - d_offset);
13710 if (offset != (bfd_vma) -1)
13712 insn3 = bfd_get_32 (output_bfd,
13713 contents + offset + 4);
13715 || insn3 == CROR_151515 || insn3 == CROR_313131)
13717 rel[1].r_offset += 4;
13718 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13721 bfd_put_32 (output_bfd, insn2, contents + offset);
13723 if ((tls_mask & tls_gd) == 0
13724 && (tls_gd == 0 || toc_symndx != 0))
13726 /* We changed the symbol. Start over in order
13727 to get h, sym, sec etc. right. */
13733 case R_PPC64_TLSGD:
13734 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13736 unsigned int insn2, insn3;
13737 bfd_vma offset = rel->r_offset;
13739 if ((tls_mask & TLS_TPRELGD) != 0)
13742 r_type = R_PPC64_NONE;
13743 insn2 = 0x7c636a14; /* add 3,3,13 */
13748 if (toc_symndx != 0)
13750 r_symndx = toc_symndx;
13751 rel->r_addend = toc_addend;
13753 r_type = R_PPC64_TPREL16_LO;
13754 rel->r_offset = offset + d_offset;
13755 insn2 = 0x38630000; /* addi 3,3,0 */
13757 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13758 /* Zap the reloc on the _tls_get_addr call too. */
13759 BFD_ASSERT (offset == rel[1].r_offset);
13760 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13761 insn3 = bfd_get_32 (output_bfd,
13762 contents + offset + 4);
13764 || insn3 == CROR_151515 || insn3 == CROR_313131)
13766 rel->r_offset += 4;
13767 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13770 bfd_put_32 (output_bfd, insn2, contents + offset);
13771 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13776 case R_PPC64_TLSLD:
13777 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13779 unsigned int insn2, insn3;
13780 bfd_vma offset = rel->r_offset;
13783 sec = local_sections[toc_symndx];
13785 r_symndx < symtab_hdr->sh_info;
13787 if (local_sections[r_symndx] == sec)
13789 if (r_symndx >= symtab_hdr->sh_info)
13790 r_symndx = STN_UNDEF;
13791 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13792 if (r_symndx != STN_UNDEF)
13793 rel->r_addend -= (local_syms[r_symndx].st_value
13794 + sec->output_offset
13795 + sec->output_section->vma);
13797 r_type = R_PPC64_TPREL16_LO;
13798 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13799 rel->r_offset = offset + d_offset;
13800 /* Zap the reloc on the _tls_get_addr call too. */
13801 BFD_ASSERT (offset == rel[1].r_offset);
13802 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13803 insn2 = 0x38630000; /* addi 3,3,0 */
13804 insn3 = bfd_get_32 (output_bfd,
13805 contents + offset + 4);
13807 || insn3 == CROR_151515 || insn3 == CROR_313131)
13809 rel->r_offset += 4;
13810 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13813 bfd_put_32 (output_bfd, insn2, contents + offset);
13818 case R_PPC64_DTPMOD64:
13819 if (rel + 1 < relend
13820 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13821 && rel[1].r_offset == rel->r_offset + 8)
13823 if ((tls_mask & TLS_GD) == 0)
13825 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13826 if ((tls_mask & TLS_TPRELGD) != 0)
13827 r_type = R_PPC64_TPREL64;
13830 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13831 r_type = R_PPC64_NONE;
13833 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13838 if ((tls_mask & TLS_LD) == 0)
13840 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13841 r_type = R_PPC64_NONE;
13842 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13847 case R_PPC64_TPREL64:
13848 if ((tls_mask & TLS_TPREL) == 0)
13850 r_type = R_PPC64_NONE;
13851 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13855 case R_PPC64_REL16_HA:
13856 /* If we are generating a non-PIC executable, edit
13857 . 0: addis 2,12,.TOC.-0b@ha
13858 . addi 2,2,.TOC.-0b@l
13859 used by ELFv2 global entry points to set up r2, to
13862 if .TOC. is in range. */
13863 if (!bfd_link_pic (info)
13864 && !info->traditional_format
13865 && h != NULL && &h->elf == htab->elf.hgot
13866 && rel + 1 < relend
13867 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13868 && rel[1].r_offset == rel->r_offset + 4
13869 && rel[1].r_addend == rel->r_addend + 4
13870 && relocation + 0x80008000 <= 0xffffffff)
13872 unsigned int insn1, insn2;
13873 bfd_vma offset = rel->r_offset - d_offset;
13874 insn1 = bfd_get_32 (output_bfd, contents + offset);
13875 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13876 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13877 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13879 r_type = R_PPC64_ADDR16_HA;
13880 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13881 rel->r_addend -= d_offset;
13882 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13883 rel[1].r_addend -= d_offset + 4;
13884 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13890 /* Handle other relocations that tweak non-addend part of insn. */
13892 max_br_offset = 1 << 25;
13893 addend = rel->r_addend;
13894 reloc_dest = DEST_NORMAL;
13900 case R_PPC64_TOCSAVE:
13901 if (relocation + addend == (rel->r_offset
13902 + input_section->output_offset
13903 + input_section->output_section->vma)
13904 && tocsave_find (htab, NO_INSERT,
13905 &local_syms, rel, input_bfd))
13907 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13909 || insn == CROR_151515 || insn == CROR_313131)
13910 bfd_put_32 (input_bfd,
13911 STD_R2_0R1 + STK_TOC (htab),
13912 contents + rel->r_offset);
13916 /* Branch taken prediction relocations. */
13917 case R_PPC64_ADDR14_BRTAKEN:
13918 case R_PPC64_REL14_BRTAKEN:
13919 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13922 /* Branch not taken prediction relocations. */
13923 case R_PPC64_ADDR14_BRNTAKEN:
13924 case R_PPC64_REL14_BRNTAKEN:
13925 insn |= bfd_get_32 (output_bfd,
13926 contents + rel->r_offset) & ~(0x01 << 21);
13929 case R_PPC64_REL14:
13930 max_br_offset = 1 << 15;
13933 case R_PPC64_REL24:
13934 /* Calls to functions with a different TOC, such as calls to
13935 shared objects, need to alter the TOC pointer. This is
13936 done using a linkage stub. A REL24 branching to these
13937 linkage stubs needs to be followed by a nop, as the nop
13938 will be replaced with an instruction to restore the TOC
13943 && h->oh->is_func_descriptor)
13944 fdh = ppc_follow_link (h->oh);
13945 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13947 if (stub_entry != NULL
13948 && (stub_entry->stub_type == ppc_stub_plt_call
13949 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13950 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13951 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13953 bfd_boolean can_plt_call = FALSE;
13955 /* All of these stubs will modify r2, so there must be a
13956 branch and link followed by a nop. The nop is
13957 replaced by an insn to restore r2. */
13958 if (rel->r_offset + 8 <= input_section->size)
13962 br = bfd_get_32 (input_bfd,
13963 contents + rel->r_offset);
13968 nop = bfd_get_32 (input_bfd,
13969 contents + rel->r_offset + 4);
13971 || nop == CROR_151515 || nop == CROR_313131)
13974 && (h == htab->tls_get_addr_fd
13975 || h == htab->tls_get_addr)
13976 && htab->params->tls_get_addr_opt)
13978 /* Special stub used, leave nop alone. */
13981 bfd_put_32 (input_bfd,
13982 LD_R2_0R1 + STK_TOC (htab),
13983 contents + rel->r_offset + 4);
13984 can_plt_call = TRUE;
13989 if (!can_plt_call && h != NULL)
13991 const char *name = h->elf.root.root.string;
13996 if (strncmp (name, "__libc_start_main", 17) == 0
13997 && (name[17] == 0 || name[17] == '@'))
13999 /* Allow crt1 branch to go via a toc adjusting
14000 stub. Other calls that never return could do
14001 the same, if we could detect such. */
14002 can_plt_call = TRUE;
14008 /* g++ as of 20130507 emits self-calls without a
14009 following nop. This is arguably wrong since we
14010 have conflicting information. On the one hand a
14011 global symbol and on the other a local call
14012 sequence, but don't error for this special case.
14013 It isn't possible to cheaply verify we have
14014 exactly such a call. Allow all calls to the same
14016 asection *code_sec = sec;
14018 if (get_opd_info (sec) != NULL)
14020 bfd_vma off = (relocation + addend
14021 - sec->output_section->vma
14022 - sec->output_offset);
14024 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14026 if (code_sec == input_section)
14027 can_plt_call = TRUE;
14032 if (stub_entry->stub_type == ppc_stub_plt_call
14033 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14034 info->callbacks->einfo
14035 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14036 "recompile with -fPIC\n"),
14037 input_bfd, input_section, rel->r_offset, sym_name);
14039 info->callbacks->einfo
14040 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14041 "(-mcmodel=small toc adjust stub)\n"),
14042 input_bfd, input_section, rel->r_offset, sym_name);
14044 bfd_set_error (bfd_error_bad_value);
14049 && (stub_entry->stub_type == ppc_stub_plt_call
14050 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14051 unresolved_reloc = FALSE;
14054 if ((stub_entry == NULL
14055 || stub_entry->stub_type == ppc_stub_long_branch
14056 || stub_entry->stub_type == ppc_stub_plt_branch)
14057 && get_opd_info (sec) != NULL)
14059 /* The branch destination is the value of the opd entry. */
14060 bfd_vma off = (relocation + addend
14061 - sec->output_section->vma
14062 - sec->output_offset);
14063 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14064 if (dest != (bfd_vma) -1)
14068 reloc_dest = DEST_OPD;
14072 /* If the branch is out of reach we ought to have a long
14074 from = (rel->r_offset
14075 + input_section->output_offset
14076 + input_section->output_section->vma);
14078 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14082 if (stub_entry != NULL
14083 && (stub_entry->stub_type == ppc_stub_long_branch
14084 || stub_entry->stub_type == ppc_stub_plt_branch)
14085 && (r_type == R_PPC64_ADDR14_BRTAKEN
14086 || r_type == R_PPC64_ADDR14_BRNTAKEN
14087 || (relocation + addend - from + max_br_offset
14088 < 2 * max_br_offset)))
14089 /* Don't use the stub if this branch is in range. */
14092 if (stub_entry != NULL)
14094 /* Munge up the value and addend so that we call the stub
14095 rather than the procedure directly. */
14096 asection *stub_sec = stub_entry->group->stub_sec;
14098 if (stub_entry->stub_type == ppc_stub_save_res)
14099 relocation += (stub_sec->output_offset
14100 + stub_sec->output_section->vma
14101 + stub_sec->size - htab->sfpr->size
14102 - htab->sfpr->output_offset
14103 - htab->sfpr->output_section->vma);
14105 relocation = (stub_entry->stub_offset
14106 + stub_sec->output_offset
14107 + stub_sec->output_section->vma);
14109 reloc_dest = DEST_STUB;
14111 if ((stub_entry->stub_type == ppc_stub_plt_call
14112 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14113 && (ALWAYS_EMIT_R2SAVE
14114 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14115 && rel + 1 < relend
14116 && rel[1].r_offset == rel->r_offset + 4
14117 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14125 /* Set 'a' bit. This is 0b00010 in BO field for branch
14126 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14127 for branch on CTR insns (BO == 1a00t or 1a01t). */
14128 if ((insn & (0x14 << 21)) == (0x04 << 21))
14129 insn |= 0x02 << 21;
14130 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14131 insn |= 0x08 << 21;
14137 /* Invert 'y' bit if not the default. */
14138 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14139 insn ^= 0x01 << 21;
14142 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
14145 /* NOP out calls to undefined weak functions.
14146 We can thus call a weak function without first
14147 checking whether the function is defined. */
14149 && h->elf.root.type == bfd_link_hash_undefweak
14150 && h->elf.dynindx == -1
14151 && r_type == R_PPC64_REL24
14155 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
14161 /* Set `addend'. */
14166 info->callbacks->einfo
14167 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14168 input_bfd, (int) r_type, sym_name);
14170 bfd_set_error (bfd_error_bad_value);
14176 case R_PPC64_TLSGD:
14177 case R_PPC64_TLSLD:
14178 case R_PPC64_TOCSAVE:
14179 case R_PPC64_GNU_VTINHERIT:
14180 case R_PPC64_GNU_VTENTRY:
14183 /* GOT16 relocations. Like an ADDR16 using the symbol's
14184 address in the GOT as relocation value instead of the
14185 symbol's value itself. Also, create a GOT entry for the
14186 symbol and put the symbol value there. */
14187 case R_PPC64_GOT_TLSGD16:
14188 case R_PPC64_GOT_TLSGD16_LO:
14189 case R_PPC64_GOT_TLSGD16_HI:
14190 case R_PPC64_GOT_TLSGD16_HA:
14191 tls_type = TLS_TLS | TLS_GD;
14194 case R_PPC64_GOT_TLSLD16:
14195 case R_PPC64_GOT_TLSLD16_LO:
14196 case R_PPC64_GOT_TLSLD16_HI:
14197 case R_PPC64_GOT_TLSLD16_HA:
14198 tls_type = TLS_TLS | TLS_LD;
14201 case R_PPC64_GOT_TPREL16_DS:
14202 case R_PPC64_GOT_TPREL16_LO_DS:
14203 case R_PPC64_GOT_TPREL16_HI:
14204 case R_PPC64_GOT_TPREL16_HA:
14205 tls_type = TLS_TLS | TLS_TPREL;
14208 case R_PPC64_GOT_DTPREL16_DS:
14209 case R_PPC64_GOT_DTPREL16_LO_DS:
14210 case R_PPC64_GOT_DTPREL16_HI:
14211 case R_PPC64_GOT_DTPREL16_HA:
14212 tls_type = TLS_TLS | TLS_DTPREL;
14215 case R_PPC64_GOT16:
14216 case R_PPC64_GOT16_LO:
14217 case R_PPC64_GOT16_HI:
14218 case R_PPC64_GOT16_HA:
14219 case R_PPC64_GOT16_DS:
14220 case R_PPC64_GOT16_LO_DS:
14223 /* Relocation is to the entry for this symbol in the global
14228 unsigned long indx = 0;
14229 struct got_entry *ent;
14231 if (tls_type == (TLS_TLS | TLS_LD)
14233 || !h->elf.def_dynamic))
14234 ent = ppc64_tlsld_got (input_bfd);
14240 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14241 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
14243 || (bfd_link_pic (info)
14244 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14245 /* This is actually a static link, or it is a
14246 -Bsymbolic link and the symbol is defined
14247 locally, or the symbol was forced to be local
14248 because of a version file. */
14252 BFD_ASSERT (h->elf.dynindx != -1);
14253 indx = h->elf.dynindx;
14254 unresolved_reloc = FALSE;
14256 ent = h->elf.got.glist;
14260 if (local_got_ents == NULL)
14262 ent = local_got_ents[r_symndx];
14265 for (; ent != NULL; ent = ent->next)
14266 if (ent->addend == orig_rel.r_addend
14267 && ent->owner == input_bfd
14268 && ent->tls_type == tls_type)
14274 if (ent->is_indirect)
14275 ent = ent->got.ent;
14276 offp = &ent->got.offset;
14277 got = ppc64_elf_tdata (ent->owner)->got;
14281 /* The offset must always be a multiple of 8. We use the
14282 least significant bit to record whether we have already
14283 processed this entry. */
14285 if ((off & 1) != 0)
14289 /* Generate relocs for the dynamic linker, except in
14290 the case of TLSLD where we'll use one entry per
14298 ? h->elf.type == STT_GNU_IFUNC
14299 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14301 relgot = htab->elf.irelplt;
14302 else if ((bfd_link_pic (info) || indx != 0)
14304 || (tls_type == (TLS_TLS | TLS_LD)
14305 && !h->elf.def_dynamic)
14306 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14307 || h->elf.root.type != bfd_link_hash_undefweak))
14308 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14309 if (relgot != NULL)
14311 outrel.r_offset = (got->output_section->vma
14312 + got->output_offset
14314 outrel.r_addend = addend;
14315 if (tls_type & (TLS_LD | TLS_GD))
14317 outrel.r_addend = 0;
14318 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14319 if (tls_type == (TLS_TLS | TLS_GD))
14321 loc = relgot->contents;
14322 loc += (relgot->reloc_count++
14323 * sizeof (Elf64_External_Rela));
14324 bfd_elf64_swap_reloca_out (output_bfd,
14326 outrel.r_offset += 8;
14327 outrel.r_addend = addend;
14329 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14332 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14333 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14334 else if (tls_type == (TLS_TLS | TLS_TPREL))
14335 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14336 else if (indx != 0)
14337 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14341 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14343 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14345 /* Write the .got section contents for the sake
14347 loc = got->contents + off;
14348 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14352 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14354 outrel.r_addend += relocation;
14355 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14357 if (htab->elf.tls_sec == NULL)
14358 outrel.r_addend = 0;
14360 outrel.r_addend -= htab->elf.tls_sec->vma;
14363 loc = relgot->contents;
14364 loc += (relgot->reloc_count++
14365 * sizeof (Elf64_External_Rela));
14366 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14369 /* Init the .got section contents here if we're not
14370 emitting a reloc. */
14373 relocation += addend;
14374 if (tls_type == (TLS_TLS | TLS_LD))
14376 else if (tls_type != 0)
14378 if (htab->elf.tls_sec == NULL)
14382 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14383 if (tls_type == (TLS_TLS | TLS_TPREL))
14384 relocation += DTP_OFFSET - TP_OFFSET;
14387 if (tls_type == (TLS_TLS | TLS_GD))
14389 bfd_put_64 (output_bfd, relocation,
14390 got->contents + off + 8);
14395 bfd_put_64 (output_bfd, relocation,
14396 got->contents + off);
14400 if (off >= (bfd_vma) -2)
14403 relocation = got->output_section->vma + got->output_offset + off;
14404 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14408 case R_PPC64_PLT16_HA:
14409 case R_PPC64_PLT16_HI:
14410 case R_PPC64_PLT16_LO:
14411 case R_PPC64_PLT32:
14412 case R_PPC64_PLT64:
14413 /* Relocation is to the entry for this symbol in the
14414 procedure linkage table. */
14416 /* Resolve a PLT reloc against a local symbol directly,
14417 without using the procedure linkage table. */
14421 /* It's possible that we didn't make a PLT entry for this
14422 symbol. This happens when statically linking PIC code,
14423 or when using -Bsymbolic. Go find a match if there is a
14425 if (htab->elf.splt != NULL)
14427 struct plt_entry *ent;
14428 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14429 if (ent->plt.offset != (bfd_vma) -1
14430 && ent->addend == orig_rel.r_addend)
14432 relocation = (htab->elf.splt->output_section->vma
14433 + htab->elf.splt->output_offset
14434 + ent->plt.offset);
14435 unresolved_reloc = FALSE;
14442 /* Relocation value is TOC base. */
14443 relocation = TOCstart;
14444 if (r_symndx == STN_UNDEF)
14445 relocation += htab->sec_info[input_section->id].toc_off;
14446 else if (unresolved_reloc)
14448 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14449 relocation += htab->sec_info[sec->id].toc_off;
14451 unresolved_reloc = TRUE;
14454 /* TOC16 relocs. We want the offset relative to the TOC base,
14455 which is the address of the start of the TOC plus 0x8000.
14456 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14458 case R_PPC64_TOC16:
14459 case R_PPC64_TOC16_LO:
14460 case R_PPC64_TOC16_HI:
14461 case R_PPC64_TOC16_DS:
14462 case R_PPC64_TOC16_LO_DS:
14463 case R_PPC64_TOC16_HA:
14464 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14467 /* Relocate against the beginning of the section. */
14468 case R_PPC64_SECTOFF:
14469 case R_PPC64_SECTOFF_LO:
14470 case R_PPC64_SECTOFF_HI:
14471 case R_PPC64_SECTOFF_DS:
14472 case R_PPC64_SECTOFF_LO_DS:
14473 case R_PPC64_SECTOFF_HA:
14475 addend -= sec->output_section->vma;
14478 case R_PPC64_REL16:
14479 case R_PPC64_REL16_LO:
14480 case R_PPC64_REL16_HI:
14481 case R_PPC64_REL16_HA:
14482 case R_PPC64_REL16DX_HA:
14485 case R_PPC64_REL14:
14486 case R_PPC64_REL14_BRNTAKEN:
14487 case R_PPC64_REL14_BRTAKEN:
14488 case R_PPC64_REL24:
14491 case R_PPC64_TPREL16:
14492 case R_PPC64_TPREL16_LO:
14493 case R_PPC64_TPREL16_HI:
14494 case R_PPC64_TPREL16_HA:
14495 case R_PPC64_TPREL16_DS:
14496 case R_PPC64_TPREL16_LO_DS:
14497 case R_PPC64_TPREL16_HIGH:
14498 case R_PPC64_TPREL16_HIGHA:
14499 case R_PPC64_TPREL16_HIGHER:
14500 case R_PPC64_TPREL16_HIGHERA:
14501 case R_PPC64_TPREL16_HIGHEST:
14502 case R_PPC64_TPREL16_HIGHESTA:
14504 && h->elf.root.type == bfd_link_hash_undefweak
14505 && h->elf.dynindx == -1)
14507 /* Make this relocation against an undefined weak symbol
14508 resolve to zero. This is really just a tweak, since
14509 code using weak externs ought to check that they are
14510 defined before using them. */
14511 bfd_byte *p = contents + rel->r_offset - d_offset;
14513 insn = bfd_get_32 (output_bfd, p);
14514 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14516 bfd_put_32 (output_bfd, insn, p);
14519 if (htab->elf.tls_sec != NULL)
14520 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14521 if (bfd_link_pic (info))
14522 /* The TPREL16 relocs shouldn't really be used in shared
14523 libs as they will result in DT_TEXTREL being set, but
14524 support them anyway. */
14528 case R_PPC64_DTPREL16:
14529 case R_PPC64_DTPREL16_LO:
14530 case R_PPC64_DTPREL16_HI:
14531 case R_PPC64_DTPREL16_HA:
14532 case R_PPC64_DTPREL16_DS:
14533 case R_PPC64_DTPREL16_LO_DS:
14534 case R_PPC64_DTPREL16_HIGH:
14535 case R_PPC64_DTPREL16_HIGHA:
14536 case R_PPC64_DTPREL16_HIGHER:
14537 case R_PPC64_DTPREL16_HIGHERA:
14538 case R_PPC64_DTPREL16_HIGHEST:
14539 case R_PPC64_DTPREL16_HIGHESTA:
14540 if (htab->elf.tls_sec != NULL)
14541 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14544 case R_PPC64_ADDR64_LOCAL:
14545 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14550 case R_PPC64_DTPMOD64:
14555 case R_PPC64_TPREL64:
14556 if (htab->elf.tls_sec != NULL)
14557 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14560 case R_PPC64_DTPREL64:
14561 if (htab->elf.tls_sec != NULL)
14562 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14565 /* Relocations that may need to be propagated if this is a
14567 case R_PPC64_REL30:
14568 case R_PPC64_REL32:
14569 case R_PPC64_REL64:
14570 case R_PPC64_ADDR14:
14571 case R_PPC64_ADDR14_BRNTAKEN:
14572 case R_PPC64_ADDR14_BRTAKEN:
14573 case R_PPC64_ADDR16:
14574 case R_PPC64_ADDR16_DS:
14575 case R_PPC64_ADDR16_HA:
14576 case R_PPC64_ADDR16_HI:
14577 case R_PPC64_ADDR16_HIGH:
14578 case R_PPC64_ADDR16_HIGHA:
14579 case R_PPC64_ADDR16_HIGHER:
14580 case R_PPC64_ADDR16_HIGHERA:
14581 case R_PPC64_ADDR16_HIGHEST:
14582 case R_PPC64_ADDR16_HIGHESTA:
14583 case R_PPC64_ADDR16_LO:
14584 case R_PPC64_ADDR16_LO_DS:
14585 case R_PPC64_ADDR24:
14586 case R_PPC64_ADDR32:
14587 case R_PPC64_ADDR64:
14588 case R_PPC64_UADDR16:
14589 case R_PPC64_UADDR32:
14590 case R_PPC64_UADDR64:
14592 if ((input_section->flags & SEC_ALLOC) == 0)
14595 if (NO_OPD_RELOCS && is_opd)
14598 if ((bfd_link_pic (info)
14600 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14601 || h->elf.root.type != bfd_link_hash_undefweak)
14602 && (must_be_dyn_reloc (info, r_type)
14603 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14604 || (ELIMINATE_COPY_RELOCS
14605 && !bfd_link_pic (info)
14607 && h->elf.dynindx != -1
14608 && !h->elf.non_got_ref
14609 && !h->elf.def_regular)
14610 || (!bfd_link_pic (info)
14612 ? h->elf.type == STT_GNU_IFUNC
14613 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14615 bfd_boolean skip, relocate;
14619 /* When generating a dynamic object, these relocations
14620 are copied into the output file to be resolved at run
14626 out_off = _bfd_elf_section_offset (output_bfd, info,
14627 input_section, rel->r_offset);
14628 if (out_off == (bfd_vma) -1)
14630 else if (out_off == (bfd_vma) -2)
14631 skip = TRUE, relocate = TRUE;
14632 out_off += (input_section->output_section->vma
14633 + input_section->output_offset);
14634 outrel.r_offset = out_off;
14635 outrel.r_addend = rel->r_addend;
14637 /* Optimize unaligned reloc use. */
14638 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14639 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14640 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14641 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14642 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14643 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14644 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14645 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14646 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14649 memset (&outrel, 0, sizeof outrel);
14650 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14652 && r_type != R_PPC64_TOC)
14654 BFD_ASSERT (h->elf.dynindx != -1);
14655 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14659 /* This symbol is local, or marked to become local,
14660 or this is an opd section reloc which must point
14661 at a local function. */
14662 outrel.r_addend += relocation;
14663 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14665 if (is_opd && h != NULL)
14667 /* Lie about opd entries. This case occurs
14668 when building shared libraries and we
14669 reference a function in another shared
14670 lib. The same thing happens for a weak
14671 definition in an application that's
14672 overridden by a strong definition in a
14673 shared lib. (I believe this is a generic
14674 bug in binutils handling of weak syms.)
14675 In these cases we won't use the opd
14676 entry in this lib. */
14677 unresolved_reloc = FALSE;
14680 && r_type == R_PPC64_ADDR64
14682 ? h->elf.type == STT_GNU_IFUNC
14683 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14684 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14687 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14689 /* We need to relocate .opd contents for ld.so.
14690 Prelink also wants simple and consistent rules
14691 for relocs. This make all RELATIVE relocs have
14692 *r_offset equal to r_addend. */
14701 ? h->elf.type == STT_GNU_IFUNC
14702 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14704 info->callbacks->einfo
14705 (_("%P: %H: %s for indirect "
14706 "function `%T' unsupported\n"),
14707 input_bfd, input_section, rel->r_offset,
14708 ppc64_elf_howto_table[r_type]->name,
14712 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14714 else if (sec == NULL || sec->owner == NULL)
14716 bfd_set_error (bfd_error_bad_value);
14723 osec = sec->output_section;
14724 indx = elf_section_data (osec)->dynindx;
14728 if ((osec->flags & SEC_READONLY) == 0
14729 && htab->elf.data_index_section != NULL)
14730 osec = htab->elf.data_index_section;
14732 osec = htab->elf.text_index_section;
14733 indx = elf_section_data (osec)->dynindx;
14735 BFD_ASSERT (indx != 0);
14737 /* We are turning this relocation into one
14738 against a section symbol, so subtract out
14739 the output section's address but not the
14740 offset of the input section in the output
14742 outrel.r_addend -= osec->vma;
14745 outrel.r_info = ELF64_R_INFO (indx, r_type);
14749 sreloc = elf_section_data (input_section)->sreloc;
14751 ? h->elf.type == STT_GNU_IFUNC
14752 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14753 sreloc = htab->elf.irelplt;
14754 if (sreloc == NULL)
14757 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14760 loc = sreloc->contents;
14761 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14762 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14764 /* If this reloc is against an external symbol, it will
14765 be computed at runtime, so there's no need to do
14766 anything now. However, for the sake of prelink ensure
14767 that the section contents are a known value. */
14770 unresolved_reloc = FALSE;
14771 /* The value chosen here is quite arbitrary as ld.so
14772 ignores section contents except for the special
14773 case of .opd where the contents might be accessed
14774 before relocation. Choose zero, as that won't
14775 cause reloc overflow. */
14778 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14779 to improve backward compatibility with older
14781 if (r_type == R_PPC64_ADDR64)
14782 addend = outrel.r_addend;
14783 /* Adjust pc_relative relocs to have zero in *r_offset. */
14784 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14785 addend = (input_section->output_section->vma
14786 + input_section->output_offset
14793 case R_PPC64_GLOB_DAT:
14794 case R_PPC64_JMP_SLOT:
14795 case R_PPC64_JMP_IREL:
14796 case R_PPC64_RELATIVE:
14797 /* We shouldn't ever see these dynamic relocs in relocatable
14799 /* Fall through. */
14801 case R_PPC64_PLTGOT16:
14802 case R_PPC64_PLTGOT16_DS:
14803 case R_PPC64_PLTGOT16_HA:
14804 case R_PPC64_PLTGOT16_HI:
14805 case R_PPC64_PLTGOT16_LO:
14806 case R_PPC64_PLTGOT16_LO_DS:
14807 case R_PPC64_PLTREL32:
14808 case R_PPC64_PLTREL64:
14809 /* These ones haven't been implemented yet. */
14811 info->callbacks->einfo
14812 (_("%P: %B: %s is not supported for `%T'\n"),
14814 ppc64_elf_howto_table[r_type]->name, sym_name);
14816 bfd_set_error (bfd_error_invalid_operation);
14821 /* Multi-instruction sequences that access the TOC can be
14822 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14823 to nop; addi rb,r2,x; */
14829 case R_PPC64_GOT_TLSLD16_HI:
14830 case R_PPC64_GOT_TLSGD16_HI:
14831 case R_PPC64_GOT_TPREL16_HI:
14832 case R_PPC64_GOT_DTPREL16_HI:
14833 case R_PPC64_GOT16_HI:
14834 case R_PPC64_TOC16_HI:
14835 /* These relocs would only be useful if building up an
14836 offset to later add to r2, perhaps in an indexed
14837 addressing mode instruction. Don't try to optimize.
14838 Unfortunately, the possibility of someone building up an
14839 offset like this or even with the HA relocs, means that
14840 we need to check the high insn when optimizing the low
14844 case R_PPC64_GOT_TLSLD16_HA:
14845 case R_PPC64_GOT_TLSGD16_HA:
14846 case R_PPC64_GOT_TPREL16_HA:
14847 case R_PPC64_GOT_DTPREL16_HA:
14848 case R_PPC64_GOT16_HA:
14849 case R_PPC64_TOC16_HA:
14850 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14851 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14853 bfd_byte *p = contents + (rel->r_offset & ~3);
14854 bfd_put_32 (input_bfd, NOP, p);
14858 case R_PPC64_GOT_TLSLD16_LO:
14859 case R_PPC64_GOT_TLSGD16_LO:
14860 case R_PPC64_GOT_TPREL16_LO_DS:
14861 case R_PPC64_GOT_DTPREL16_LO_DS:
14862 case R_PPC64_GOT16_LO:
14863 case R_PPC64_GOT16_LO_DS:
14864 case R_PPC64_TOC16_LO:
14865 case R_PPC64_TOC16_LO_DS:
14866 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14867 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14869 bfd_byte *p = contents + (rel->r_offset & ~3);
14870 insn = bfd_get_32 (input_bfd, p);
14871 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14873 /* Transform addic to addi when we change reg. */
14874 insn &= ~((0x3f << 26) | (0x1f << 16));
14875 insn |= (14u << 26) | (2 << 16);
14879 insn &= ~(0x1f << 16);
14882 bfd_put_32 (input_bfd, insn, p);
14887 /* Do any further special processing. */
14888 howto = ppc64_elf_howto_table[(int) r_type];
14894 case R_PPC64_REL16_HA:
14895 case R_PPC64_REL16DX_HA:
14896 case R_PPC64_ADDR16_HA:
14897 case R_PPC64_ADDR16_HIGHA:
14898 case R_PPC64_ADDR16_HIGHERA:
14899 case R_PPC64_ADDR16_HIGHESTA:
14900 case R_PPC64_TOC16_HA:
14901 case R_PPC64_SECTOFF_HA:
14902 case R_PPC64_TPREL16_HA:
14903 case R_PPC64_TPREL16_HIGHA:
14904 case R_PPC64_TPREL16_HIGHERA:
14905 case R_PPC64_TPREL16_HIGHESTA:
14906 case R_PPC64_DTPREL16_HA:
14907 case R_PPC64_DTPREL16_HIGHA:
14908 case R_PPC64_DTPREL16_HIGHERA:
14909 case R_PPC64_DTPREL16_HIGHESTA:
14910 /* It's just possible that this symbol is a weak symbol
14911 that's not actually defined anywhere. In that case,
14912 'sec' would be NULL, and we should leave the symbol
14913 alone (it will be set to zero elsewhere in the link). */
14918 case R_PPC64_GOT16_HA:
14919 case R_PPC64_PLTGOT16_HA:
14920 case R_PPC64_PLT16_HA:
14921 case R_PPC64_GOT_TLSGD16_HA:
14922 case R_PPC64_GOT_TLSLD16_HA:
14923 case R_PPC64_GOT_TPREL16_HA:
14924 case R_PPC64_GOT_DTPREL16_HA:
14925 /* Add 0x10000 if sign bit in 0:15 is set.
14926 Bits 0:15 are not used. */
14930 case R_PPC64_ADDR16_DS:
14931 case R_PPC64_ADDR16_LO_DS:
14932 case R_PPC64_GOT16_DS:
14933 case R_PPC64_GOT16_LO_DS:
14934 case R_PPC64_PLT16_LO_DS:
14935 case R_PPC64_SECTOFF_DS:
14936 case R_PPC64_SECTOFF_LO_DS:
14937 case R_PPC64_TOC16_DS:
14938 case R_PPC64_TOC16_LO_DS:
14939 case R_PPC64_PLTGOT16_DS:
14940 case R_PPC64_PLTGOT16_LO_DS:
14941 case R_PPC64_GOT_TPREL16_DS:
14942 case R_PPC64_GOT_TPREL16_LO_DS:
14943 case R_PPC64_GOT_DTPREL16_DS:
14944 case R_PPC64_GOT_DTPREL16_LO_DS:
14945 case R_PPC64_TPREL16_DS:
14946 case R_PPC64_TPREL16_LO_DS:
14947 case R_PPC64_DTPREL16_DS:
14948 case R_PPC64_DTPREL16_LO_DS:
14949 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14951 /* If this reloc is against an lq, lxv, or stxv insn, then
14952 the value must be a multiple of 16. This is somewhat of
14953 a hack, but the "correct" way to do this by defining _DQ
14954 forms of all the _DS relocs bloats all reloc switches in
14955 this file. It doesn't make much sense to use these
14956 relocs in data, so testing the insn should be safe. */
14957 if ((insn & (0x3f << 26)) == (56u << 26)
14958 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
14960 relocation += addend;
14961 addend = insn & (mask ^ 3);
14962 if ((relocation & mask) != 0)
14964 relocation ^= relocation & mask;
14965 info->callbacks->einfo
14966 (_("%P: %H: error: %s not a multiple of %u\n"),
14967 input_bfd, input_section, rel->r_offset,
14970 bfd_set_error (bfd_error_bad_value);
14977 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14978 because such sections are not SEC_ALLOC and thus ld.so will
14979 not process them. */
14980 if (unresolved_reloc
14981 && !((input_section->flags & SEC_DEBUGGING) != 0
14982 && h->elf.def_dynamic)
14983 && _bfd_elf_section_offset (output_bfd, info, input_section,
14984 rel->r_offset) != (bfd_vma) -1)
14986 info->callbacks->einfo
14987 (_("%P: %H: unresolvable %s against `%T'\n"),
14988 input_bfd, input_section, rel->r_offset,
14990 h->elf.root.root.string);
14994 /* 16-bit fields in insns mostly have signed values, but a
14995 few insns have 16-bit unsigned values. Really, we should
14996 have different reloc types. */
14997 if (howto->complain_on_overflow != complain_overflow_dont
14998 && howto->dst_mask == 0xffff
14999 && (input_section->flags & SEC_CODE) != 0)
15001 enum complain_overflow complain = complain_overflow_signed;
15003 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15004 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15005 complain = complain_overflow_bitfield;
15006 else if (howto->rightshift == 0
15007 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15008 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15009 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15010 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15011 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15012 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15013 complain = complain_overflow_unsigned;
15014 if (howto->complain_on_overflow != complain)
15016 alt_howto = *howto;
15017 alt_howto.complain_on_overflow = complain;
15018 howto = &alt_howto;
15022 if (r_type == R_PPC64_REL16DX_HA)
15024 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15025 if (rel->r_offset + 4 > input_section->size)
15026 r = bfd_reloc_outofrange;
15029 relocation += addend;
15030 relocation -= (rel->r_offset
15031 + input_section->output_offset
15032 + input_section->output_section->vma);
15033 relocation = (bfd_signed_vma) relocation >> 16;
15034 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15036 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15037 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15039 if (relocation + 0x8000 > 0xffff)
15040 r = bfd_reloc_overflow;
15044 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15045 rel->r_offset, relocation, addend);
15047 if (r != bfd_reloc_ok)
15049 char *more_info = NULL;
15050 const char *reloc_name = howto->name;
15052 if (reloc_dest != DEST_NORMAL)
15054 more_info = bfd_malloc (strlen (reloc_name) + 8);
15055 if (more_info != NULL)
15057 strcpy (more_info, reloc_name);
15058 strcat (more_info, (reloc_dest == DEST_OPD
15059 ? " (OPD)" : " (stub)"));
15060 reloc_name = more_info;
15064 if (r == bfd_reloc_overflow)
15066 /* On code like "if (foo) foo();" don't report overflow
15067 on a branch to zero when foo is undefined. */
15069 && (reloc_dest == DEST_STUB
15071 && (h->elf.root.type == bfd_link_hash_undefweak
15072 || h->elf.root.type == bfd_link_hash_undefined)
15073 && is_branch_reloc (r_type))))
15075 if (!((*info->callbacks->reloc_overflow)
15076 (info, &h->elf.root, sym_name,
15077 reloc_name, orig_rel.r_addend,
15078 input_bfd, input_section, rel->r_offset)))
15084 info->callbacks->einfo
15085 (_("%P: %H: %s against `%T': error %d\n"),
15086 input_bfd, input_section, rel->r_offset,
15087 reloc_name, sym_name, (int) r);
15090 if (more_info != NULL)
15100 Elf_Internal_Shdr *rel_hdr;
15101 size_t deleted = rel - wrel;
15103 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15104 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15105 if (rel_hdr->sh_size == 0)
15107 /* It is too late to remove an empty reloc section. Leave
15109 ??? What is wrong with an empty section??? */
15110 rel_hdr->sh_size = rel_hdr->sh_entsize;
15113 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15114 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15115 input_section->reloc_count -= deleted;
15118 /* If we're emitting relocations, then shortly after this function
15119 returns, reloc offsets and addends for this section will be
15120 adjusted. Worse, reloc symbol indices will be for the output
15121 file rather than the input. Save a copy of the relocs for
15122 opd_entry_value. */
15123 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15126 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15127 rel = bfd_alloc (input_bfd, amt);
15128 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15129 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15132 memcpy (rel, relocs, amt);
15137 /* Adjust the value of any local symbols in opd sections. */
15140 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15141 const char *name ATTRIBUTE_UNUSED,
15142 Elf_Internal_Sym *elfsym,
15143 asection *input_sec,
15144 struct elf_link_hash_entry *h)
15146 struct _opd_sec_data *opd;
15153 opd = get_opd_info (input_sec);
15154 if (opd == NULL || opd->adjust == NULL)
15157 value = elfsym->st_value - input_sec->output_offset;
15158 if (!bfd_link_relocatable (info))
15159 value -= input_sec->output_section->vma;
15161 adjust = opd->adjust[OPD_NDX (value)];
15165 elfsym->st_value += adjust;
15169 /* Finish up dynamic symbol handling. We set the contents of various
15170 dynamic sections here. */
15173 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15174 struct bfd_link_info *info,
15175 struct elf_link_hash_entry *h,
15176 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15178 struct ppc_link_hash_table *htab;
15179 struct plt_entry *ent;
15180 Elf_Internal_Rela rela;
15183 htab = ppc_hash_table (info);
15187 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15188 if (ent->plt.offset != (bfd_vma) -1)
15190 /* This symbol has an entry in the procedure linkage
15191 table. Set it up. */
15192 if (!htab->elf.dynamic_sections_created
15193 || h->dynindx == -1)
15195 BFD_ASSERT (h->type == STT_GNU_IFUNC
15197 && (h->root.type == bfd_link_hash_defined
15198 || h->root.type == bfd_link_hash_defweak));
15199 rela.r_offset = (htab->elf.iplt->output_section->vma
15200 + htab->elf.iplt->output_offset
15201 + ent->plt.offset);
15203 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15205 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15206 rela.r_addend = (h->root.u.def.value
15207 + h->root.u.def.section->output_offset
15208 + h->root.u.def.section->output_section->vma
15210 loc = (htab->elf.irelplt->contents
15211 + (htab->elf.irelplt->reloc_count++
15212 * sizeof (Elf64_External_Rela)));
15216 rela.r_offset = (htab->elf.splt->output_section->vma
15217 + htab->elf.splt->output_offset
15218 + ent->plt.offset);
15219 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15220 rela.r_addend = ent->addend;
15221 loc = (htab->elf.srelplt->contents
15222 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15223 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15225 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15227 if (!htab->opd_abi)
15229 if (!h->def_regular)
15231 /* Mark the symbol as undefined, rather than as
15232 defined in glink. Leave the value if there were
15233 any relocations where pointer equality matters
15234 (this is a clue for the dynamic linker, to make
15235 function pointer comparisons work between an
15236 application and shared library), otherwise set it
15238 sym->st_shndx = SHN_UNDEF;
15239 if (!h->pointer_equality_needed)
15241 else if (!h->ref_regular_nonweak)
15243 /* This breaks function pointer comparisons, but
15244 that is better than breaking tests for a NULL
15245 function pointer. */
15254 /* This symbol needs a copy reloc. Set it up. */
15256 if (h->dynindx == -1
15257 || (h->root.type != bfd_link_hash_defined
15258 && h->root.type != bfd_link_hash_defweak)
15259 || htab->relbss == NULL)
15262 rela.r_offset = (h->root.u.def.value
15263 + h->root.u.def.section->output_section->vma
15264 + h->root.u.def.section->output_offset);
15265 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15267 loc = htab->relbss->contents;
15268 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
15269 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15275 /* Used to decide how to sort relocs in an optimal manner for the
15276 dynamic linker, before writing them out. */
15278 static enum elf_reloc_type_class
15279 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15280 const asection *rel_sec,
15281 const Elf_Internal_Rela *rela)
15283 enum elf_ppc64_reloc_type r_type;
15284 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15286 if (rel_sec == htab->elf.irelplt)
15287 return reloc_class_ifunc;
15289 r_type = ELF64_R_TYPE (rela->r_info);
15292 case R_PPC64_RELATIVE:
15293 return reloc_class_relative;
15294 case R_PPC64_JMP_SLOT:
15295 return reloc_class_plt;
15297 return reloc_class_copy;
15299 return reloc_class_normal;
15303 /* Finish up the dynamic sections. */
15306 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15307 struct bfd_link_info *info)
15309 struct ppc_link_hash_table *htab;
15313 htab = ppc_hash_table (info);
15317 dynobj = htab->elf.dynobj;
15318 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15320 if (htab->elf.dynamic_sections_created)
15322 Elf64_External_Dyn *dyncon, *dynconend;
15324 if (sdyn == NULL || htab->elf.sgot == NULL)
15327 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15328 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15329 for (; dyncon < dynconend; dyncon++)
15331 Elf_Internal_Dyn dyn;
15334 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15341 case DT_PPC64_GLINK:
15343 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15344 /* We stupidly defined DT_PPC64_GLINK to be the start
15345 of glink rather than the first entry point, which is
15346 what ld.so needs, and now have a bigger stub to
15347 support automatic multiple TOCs. */
15348 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15352 s = bfd_get_section_by_name (output_bfd, ".opd");
15355 dyn.d_un.d_ptr = s->vma;
15359 if (htab->do_multi_toc && htab->multi_toc_needed)
15360 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15363 case DT_PPC64_OPDSZ:
15364 s = bfd_get_section_by_name (output_bfd, ".opd");
15367 dyn.d_un.d_val = s->size;
15371 s = htab->elf.splt;
15372 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15376 s = htab->elf.srelplt;
15377 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15381 dyn.d_un.d_val = htab->elf.srelplt->size;
15385 /* Don't count procedure linkage table relocs in the
15386 overall reloc count. */
15387 s = htab->elf.srelplt;
15390 dyn.d_un.d_val -= s->size;
15394 /* We may not be using the standard ELF linker script.
15395 If .rela.plt is the first .rela section, we adjust
15396 DT_RELA to not include it. */
15397 s = htab->elf.srelplt;
15400 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15402 dyn.d_un.d_ptr += s->size;
15406 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15410 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15412 /* Fill in the first entry in the global offset table.
15413 We use it to hold the link-time TOCbase. */
15414 bfd_put_64 (output_bfd,
15415 elf_gp (output_bfd) + TOC_BASE_OFF,
15416 htab->elf.sgot->contents);
15418 /* Set .got entry size. */
15419 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15422 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15424 /* Set .plt entry size. */
15425 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15426 = PLT_ENTRY_SIZE (htab);
15429 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15430 brlt ourselves if emitrelocations. */
15431 if (htab->brlt != NULL
15432 && htab->brlt->reloc_count != 0
15433 && !_bfd_elf_link_output_relocs (output_bfd,
15435 elf_section_data (htab->brlt)->rela.hdr,
15436 elf_section_data (htab->brlt)->relocs,
15440 if (htab->glink != NULL
15441 && htab->glink->reloc_count != 0
15442 && !_bfd_elf_link_output_relocs (output_bfd,
15444 elf_section_data (htab->glink)->rela.hdr,
15445 elf_section_data (htab->glink)->relocs,
15449 if (htab->glink_eh_frame != NULL
15450 && htab->glink_eh_frame->size != 0)
15454 asection *stub_sec;
15456 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15457 for (stub_sec = htab->params->stub_bfd->sections;
15459 stub_sec = stub_sec->next)
15460 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15466 /* Offset to stub section. */
15467 val = (stub_sec->output_section->vma
15468 + stub_sec->output_offset);
15469 val -= (htab->glink_eh_frame->output_section->vma
15470 + htab->glink_eh_frame->output_offset
15471 + (p - htab->glink_eh_frame->contents));
15472 if (val + 0x80000000 > 0xffffffff)
15474 info->callbacks->einfo
15475 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15479 bfd_put_32 (dynobj, val, p);
15481 /* stub section size. */
15483 /* Augmentation. */
15488 if (htab->glink != NULL && htab->glink->size != 0)
15494 /* Offset to .glink. */
15495 val = (htab->glink->output_section->vma
15496 + htab->glink->output_offset
15498 val -= (htab->glink_eh_frame->output_section->vma
15499 + htab->glink_eh_frame->output_offset
15500 + (p - htab->glink_eh_frame->contents));
15501 if (val + 0x80000000 > 0xffffffff)
15503 info->callbacks->einfo
15504 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15505 htab->glink->name);
15508 bfd_put_32 (dynobj, val, p);
15512 /* Augmentation. */
15518 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15519 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15520 htab->glink_eh_frame,
15521 htab->glink_eh_frame->contents))
15525 /* We need to handle writing out multiple GOT sections ourselves,
15526 since we didn't add them to DYNOBJ. We know dynobj is the first
15528 while ((dynobj = dynobj->link.next) != NULL)
15532 if (!is_ppc64_elf (dynobj))
15535 s = ppc64_elf_tdata (dynobj)->got;
15538 && s->output_section != bfd_abs_section_ptr
15539 && !bfd_set_section_contents (output_bfd, s->output_section,
15540 s->contents, s->output_offset,
15543 s = ppc64_elf_tdata (dynobj)->relgot;
15546 && s->output_section != bfd_abs_section_ptr
15547 && !bfd_set_section_contents (output_bfd, s->output_section,
15548 s->contents, s->output_offset,
15556 #include "elf64-target.h"
15558 /* FreeBSD support */
15560 #undef TARGET_LITTLE_SYM
15561 #undef TARGET_LITTLE_NAME
15563 #undef TARGET_BIG_SYM
15564 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15565 #undef TARGET_BIG_NAME
15566 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15569 #define ELF_OSABI ELFOSABI_FREEBSD
15572 #define elf64_bed elf64_powerpc_fbsd_bed
15574 #include "elf64-target.h"