1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 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_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
105 #define elf_backend_gc_keep ppc64_elf_gc_keep
106 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
107 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* glink call stub instructions. We enter with the index in R0. */
191 #define GLINK_CALL_STUB_SIZE (16*4)
195 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
196 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
198 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
199 /* ld %2,(0b-1b)(%11) */
200 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
201 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
207 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
208 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
209 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
210 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
211 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
214 #define NOP 0x60000000
216 /* Some other nops. */
217 #define CROR_151515 0x4def7b82
218 #define CROR_313131 0x4ffffb82
220 /* .glink entries for the first 32k functions are two instructions. */
221 #define LI_R0_0 0x38000000 /* li %r0,0 */
222 #define B_DOT 0x48000000 /* b . */
224 /* After that, we need two instructions to load the index, followed by
226 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
227 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
229 /* Instructions used by the save and restore reg functions. */
230 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
231 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
232 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
233 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
234 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
235 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
236 #define LI_R12_0 0x39800000 /* li %r12,0 */
237 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
238 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
239 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
240 #define BLR 0x4e800020 /* blr */
242 /* Since .opd is an array of descriptors and each entry will end up
243 with identical R_PPC64_RELATIVE relocs, there is really no need to
244 propagate .opd relocs; The dynamic linker should be taught to
245 relocate .opd without reloc entries. */
246 #ifndef NO_OPD_RELOCS
247 #define NO_OPD_RELOCS 0
251 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
255 abiversion (bfd *abfd)
257 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
261 set_abiversion (bfd *abfd, int ver)
263 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
264 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
267 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
269 /* Relocation HOWTO's. */
270 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
272 static reloc_howto_type ppc64_elf_howto_raw[] = {
273 /* This reloc does nothing. */
274 HOWTO (R_PPC64_NONE, /* type */
276 3, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_dont, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_NONE", /* name */
283 FALSE, /* partial_inplace */
286 FALSE), /* pcrel_offset */
288 /* A standard 32 bit relocation. */
289 HOWTO (R_PPC64_ADDR32, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC64_ADDR32", /* name */
298 FALSE, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 /* An absolute 26 bit branch; the lower two bits must be zero.
304 FIXME: we don't check that, we just clear them. */
305 HOWTO (R_PPC64_ADDR24, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR24", /* name */
314 FALSE, /* partial_inplace */
316 0x03fffffc, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A standard 16 bit relocation. */
320 HOWTO (R_PPC64_ADDR16, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_bitfield, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* A 16 bit relocation without overflow. */
335 HOWTO (R_PPC64_ADDR16_LO, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_dont,/* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_LO", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address. */
350 HOWTO (R_PPC64_ADDR16_HI, /* type */
352 1, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE, /* pc_relative */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC64_ADDR16_HI", /* name */
359 FALSE, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
364 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
365 bits, treated as a signed number, is negative. */
366 HOWTO (R_PPC64_ADDR16_HA, /* type */
368 1, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_signed, /* complain_on_overflow */
373 ppc64_elf_ha_reloc, /* special_function */
374 "R_PPC64_ADDR16_HA", /* name */
375 FALSE, /* partial_inplace */
377 0xffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 /* An absolute 16 bit branch; the lower two bits must be zero.
381 FIXME: we don't check that, we just clear them. */
382 HOWTO (R_PPC64_ADDR14, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 FALSE, /* pc_relative */
388 complain_overflow_signed, /* complain_on_overflow */
389 ppc64_elf_branch_reloc, /* special_function */
390 "R_PPC64_ADDR14", /* name */
391 FALSE, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 FALSE), /* pcrel_offset */
396 /* An absolute 16 bit branch, for which bit 10 should be set to
397 indicate that the branch is expected to be taken. The lower two
398 bits must be zero. */
399 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 FALSE, /* pc_relative */
405 complain_overflow_signed, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc, /* special_function */
407 "R_PPC64_ADDR14_BRTAKEN",/* name */
408 FALSE, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 FALSE), /* pcrel_offset */
413 /* An absolute 16 bit branch, for which bit 10 should be set to
414 indicate that the branch is not expected to be taken. The lower
415 two bits must be zero. */
416 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_brtaken_reloc, /* special_function */
424 "R_PPC64_ADDR14_BRNTAKEN",/* name */
425 FALSE, /* partial_inplace */
427 0x0000fffc, /* dst_mask */
428 FALSE), /* pcrel_offset */
430 /* A relative 26 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL24, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL24", /* name */
440 FALSE, /* partial_inplace */
442 0x03fffffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch; the lower two bits must be zero. */
446 HOWTO (R_PPC64_REL14, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE, /* pc_relative */
452 complain_overflow_signed, /* complain_on_overflow */
453 ppc64_elf_branch_reloc, /* special_function */
454 "R_PPC64_REL14", /* name */
455 FALSE, /* partial_inplace */
457 0x0000fffc, /* dst_mask */
458 TRUE), /* pcrel_offset */
460 /* A relative 16 bit branch. Bit 10 should be set to indicate that
461 the branch is expected to be taken. The lower two bits must be
463 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
467 TRUE, /* pc_relative */
469 complain_overflow_signed, /* complain_on_overflow */
470 ppc64_elf_brtaken_reloc, /* special_function */
471 "R_PPC64_REL14_BRTAKEN", /* name */
472 FALSE, /* partial_inplace */
474 0x0000fffc, /* dst_mask */
475 TRUE), /* pcrel_offset */
477 /* A relative 16 bit branch. Bit 10 should be set to indicate that
478 the branch is not expected to be taken. The lower two bits must
480 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 TRUE, /* pc_relative */
486 complain_overflow_signed, /* complain_on_overflow */
487 ppc64_elf_brtaken_reloc, /* special_function */
488 "R_PPC64_REL14_BRNTAKEN",/* name */
489 FALSE, /* partial_inplace */
491 0x0000fffc, /* dst_mask */
492 TRUE), /* pcrel_offset */
494 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
496 HOWTO (R_PPC64_GOT16, /* type */
498 1, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_signed, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_GOT16", /* name */
505 FALSE, /* partial_inplace */
507 0xffff, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
512 HOWTO (R_PPC64_GOT16_LO, /* type */
514 1, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_GOT16_LO", /* name */
521 FALSE, /* partial_inplace */
523 0xffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
528 HOWTO (R_PPC64_GOT16_HI, /* type */
530 1, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE, /* pc_relative */
534 complain_overflow_signed,/* complain_on_overflow */
535 ppc64_elf_unhandled_reloc, /* special_function */
536 "R_PPC64_GOT16_HI", /* name */
537 FALSE, /* partial_inplace */
539 0xffff, /* dst_mask */
540 FALSE), /* pcrel_offset */
542 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
544 HOWTO (R_PPC64_GOT16_HA, /* type */
546 1, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_signed,/* complain_on_overflow */
551 ppc64_elf_unhandled_reloc, /* special_function */
552 "R_PPC64_GOT16_HA", /* name */
553 FALSE, /* partial_inplace */
555 0xffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* This is used only by the dynamic linker. The symbol should exist
559 both in the object being run and in some shared library. The
560 dynamic linker copies the data addressed by the symbol from the
561 shared library into the object, because the object being
562 run has to have the data at some particular address. */
563 HOWTO (R_PPC64_COPY, /* type */
565 0, /* this one is variable size */
567 FALSE, /* pc_relative */
569 complain_overflow_dont, /* complain_on_overflow */
570 ppc64_elf_unhandled_reloc, /* special_function */
571 "R_PPC64_COPY", /* name */
572 FALSE, /* partial_inplace */
575 FALSE), /* pcrel_offset */
577 /* Like R_PPC64_ADDR64, but used when setting global offset table
579 HOWTO (R_PPC64_GLOB_DAT, /* type */
581 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
583 FALSE, /* pc_relative */
585 complain_overflow_dont, /* complain_on_overflow */
586 ppc64_elf_unhandled_reloc, /* special_function */
587 "R_PPC64_GLOB_DAT", /* name */
588 FALSE, /* partial_inplace */
590 ONES (64), /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* Created by the link editor. Marks a procedure linkage table
594 entry for a symbol. */
595 HOWTO (R_PPC64_JMP_SLOT, /* type */
597 0, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE, /* pc_relative */
601 complain_overflow_dont, /* complain_on_overflow */
602 ppc64_elf_unhandled_reloc, /* special_function */
603 "R_PPC64_JMP_SLOT", /* name */
604 FALSE, /* partial_inplace */
607 FALSE), /* pcrel_offset */
609 /* Used only by the dynamic linker. When the object is run, this
610 doubleword64 is set to the load address of the object, plus the
612 HOWTO (R_PPC64_RELATIVE, /* type */
614 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
616 FALSE, /* pc_relative */
618 complain_overflow_dont, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_RELATIVE", /* name */
621 FALSE, /* partial_inplace */
623 ONES (64), /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR32, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR32, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR32", /* name */
636 FALSE, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16, but may be unaligned. */
642 HOWTO (R_PPC64_UADDR16, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_UADDR16", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* 32-bit PC relative. */
657 HOWTO (R_PPC64_REL32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 TRUE, /* pc_relative */
663 complain_overflow_signed, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC64_REL32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
671 /* 32-bit relocation to the symbol's procedure linkage table. */
672 HOWTO (R_PPC64_PLT32, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE, /* pc_relative */
678 complain_overflow_bitfield, /* complain_on_overflow */
679 ppc64_elf_unhandled_reloc, /* special_function */
680 "R_PPC64_PLT32", /* name */
681 FALSE, /* partial_inplace */
683 0xffffffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
686 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
687 FIXME: R_PPC64_PLTREL32 not supported. */
688 HOWTO (R_PPC64_PLTREL32, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 TRUE, /* pc_relative */
694 complain_overflow_signed, /* complain_on_overflow */
695 ppc64_elf_unhandled_reloc, /* special_function */
696 "R_PPC64_PLTREL32", /* name */
697 FALSE, /* partial_inplace */
699 0xffffffff, /* dst_mask */
700 TRUE), /* pcrel_offset */
702 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
704 HOWTO (R_PPC64_PLT16_LO, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 ppc64_elf_unhandled_reloc, /* special_function */
712 "R_PPC64_PLT16_LO", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
720 HOWTO (R_PPC64_PLT16_HI, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_signed, /* complain_on_overflow */
727 ppc64_elf_unhandled_reloc, /* special_function */
728 "R_PPC64_PLT16_HI", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
736 HOWTO (R_PPC64_PLT16_HA, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_unhandled_reloc, /* special_function */
744 "R_PPC64_PLT16_HA", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* 16-bit section relative relocation. */
751 HOWTO (R_PPC64_SECTOFF, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_signed, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* Like R_PPC64_SECTOFF, but no overflow warning. */
766 HOWTO (R_PPC64_SECTOFF_LO, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_LO", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HI, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HI", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* 16-bit upper half adjusted section relative relocation. */
796 HOWTO (R_PPC64_SECTOFF_HA, /* type */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE, /* pc_relative */
802 complain_overflow_signed, /* complain_on_overflow */
803 ppc64_elf_sectoff_ha_reloc, /* special_function */
804 "R_PPC64_SECTOFF_HA", /* name */
805 FALSE, /* partial_inplace */
807 0xffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
810 /* Like R_PPC64_REL24 without touching the two least significant bits. */
811 HOWTO (R_PPC64_REL30, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE, /* pc_relative */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_PPC64_REL30", /* name */
820 FALSE, /* partial_inplace */
822 0xfffffffc, /* dst_mask */
823 TRUE), /* pcrel_offset */
825 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
827 /* A standard 64-bit relocation. */
828 HOWTO (R_PPC64_ADDR64, /* type */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR64", /* name */
837 FALSE, /* partial_inplace */
839 ONES (64), /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address. */
843 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE, /* pc_relative */
849 complain_overflow_dont, /* complain_on_overflow */
850 bfd_elf_generic_reloc, /* special_function */
851 "R_PPC64_ADDR16_HIGHER", /* name */
852 FALSE, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
857 /* The bits 32-47 of an address, plus 1 if the contents of the low
858 16 bits, treated as a signed number, is negative. */
859 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 ppc64_elf_ha_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHERA", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address. */
874 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE, /* pc_relative */
880 complain_overflow_dont, /* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_PPC64_ADDR16_HIGHEST", /* name */
883 FALSE, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* The bits 48-63 of an address, plus 1 if the contents of the low
889 16 bits, treated as a signed number, is negative. */
890 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 ppc64_elf_ha_reloc, /* special_function */
898 "R_PPC64_ADDR16_HIGHESTA", /* name */
899 FALSE, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* Like ADDR64, but may be unaligned. */
905 HOWTO (R_PPC64_UADDR64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 FALSE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_UADDR64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 FALSE), /* pcrel_offset */
919 /* 64-bit relative relocation. */
920 HOWTO (R_PPC64_REL64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 TRUE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 bfd_elf_generic_reloc, /* special_function */
928 "R_PPC64_REL64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 TRUE), /* pcrel_offset */
934 /* 64-bit relocation to the symbol's procedure linkage table. */
935 HOWTO (R_PPC64_PLT64, /* type */
937 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_unhandled_reloc, /* special_function */
943 "R_PPC64_PLT64", /* name */
944 FALSE, /* partial_inplace */
946 ONES (64), /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 64-bit PC relative relocation to the symbol's procedure linkage
951 /* FIXME: R_PPC64_PLTREL64 not supported. */
952 HOWTO (R_PPC64_PLTREL64, /* type */
954 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
956 TRUE, /* pc_relative */
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc64_elf_unhandled_reloc, /* special_function */
960 "R_PPC64_PLTREL64", /* name */
961 FALSE, /* partial_inplace */
963 ONES (64), /* dst_mask */
964 TRUE), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation. */
968 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
969 HOWTO (R_PPC64_TOC16, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE, /* pc_relative */
975 complain_overflow_signed, /* complain_on_overflow */
976 ppc64_elf_toc_reloc, /* special_function */
977 "R_PPC64_TOC16", /* name */
978 FALSE, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE), /* pcrel_offset */
983 /* 16 bit TOC-relative relocation without overflow. */
985 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
986 HOWTO (R_PPC64_TOC16_LO, /* type */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc64_elf_toc_reloc, /* special_function */
994 "R_PPC64_TOC16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* 16 bit TOC-relative relocation, high 16 bits. */
1002 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1003 HOWTO (R_PPC64_TOC16_HI, /* type */
1004 16, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_signed, /* complain_on_overflow */
1010 ppc64_elf_toc_reloc, /* special_function */
1011 "R_PPC64_TOC16_HI", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1018 contents of the low 16 bits, treated as a signed number, is
1021 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1022 HOWTO (R_PPC64_TOC16_HA, /* type */
1023 16, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 FALSE, /* pc_relative */
1028 complain_overflow_signed, /* complain_on_overflow */
1029 ppc64_elf_toc_ha_reloc, /* special_function */
1030 "R_PPC64_TOC16_HA", /* name */
1031 FALSE, /* partial_inplace */
1033 0xffff, /* dst_mask */
1034 FALSE), /* pcrel_offset */
1036 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1038 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1039 HOWTO (R_PPC64_TOC, /* type */
1041 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1043 FALSE, /* pc_relative */
1045 complain_overflow_dont, /* complain_on_overflow */
1046 ppc64_elf_toc64_reloc, /* special_function */
1047 "R_PPC64_TOC", /* name */
1048 FALSE, /* partial_inplace */
1050 ONES (64), /* dst_mask */
1051 FALSE), /* pcrel_offset */
1053 /* Like R_PPC64_GOT16, but also informs the link editor that the
1054 value to relocate may (!) refer to a PLT entry which the link
1055 editor (a) may replace with the symbol value. If the link editor
1056 is unable to fully resolve the symbol, it may (b) create a PLT
1057 entry and store the address to the new PLT entry in the GOT.
1058 This permits lazy resolution of function symbols at run time.
1059 The link editor may also skip all of this and just (c) emit a
1060 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1061 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1062 HOWTO (R_PPC64_PLTGOT16, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_signed, /* complain_on_overflow */
1069 ppc64_elf_unhandled_reloc, /* special_function */
1070 "R_PPC64_PLTGOT16", /* name */
1071 FALSE, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* Like R_PPC64_PLTGOT16, but without overflow. */
1077 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1078 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc64_elf_unhandled_reloc, /* special_function */
1086 "R_PPC64_PLTGOT16_LO", /* name */
1087 FALSE, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1092 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1093 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1094 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc, /* special_function */
1102 "R_PPC64_PLTGOT16_HI", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1109 1 if the contents of the low 16 bits, treated as a signed number,
1111 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1112 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1113 16, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 ppc64_elf_unhandled_reloc, /* special_function */
1120 "R_PPC64_PLTGOT16_HA", /* name */
1121 FALSE, /* partial_inplace */
1123 0xffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_DS", /* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_PPC64_ADDR16_LO_DS",/* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_signed, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_GOT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc64_elf_unhandled_reloc, /* special_function */
1195 "R_PPC64_PLT16_LO_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_signed, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_DS", /* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc64_elf_sectoff_reloc, /* special_function */
1225 "R_PPC64_SECTOFF_LO_DS",/* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_signed, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1247 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1249 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE, /* pc_relative */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 ppc64_elf_toc_reloc, /* special_function */
1255 "R_PPC64_TOC16_LO_DS", /* name */
1256 FALSE, /* partial_inplace */
1258 0xfffc, /* dst_mask */
1259 FALSE), /* pcrel_offset */
1261 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1262 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1263 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_signed, /* complain_on_overflow */
1270 ppc64_elf_unhandled_reloc, /* special_function */
1271 "R_PPC64_PLTGOT16_DS", /* name */
1272 FALSE, /* partial_inplace */
1274 0xfffc, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1278 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1279 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc, /* special_function */
1287 "R_PPC64_PLTGOT16_LO_DS",/* name */
1288 FALSE, /* partial_inplace */
1290 0xfffc, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* Marker relocs for TLS. */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC64_TLS", /* name */
1303 FALSE, /* partial_inplace */
1306 FALSE), /* pcrel_offset */
1308 HOWTO (R_PPC64_TLSGD,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE, /* pc_relative */
1314 complain_overflow_dont, /* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_PPC64_TLSGD", /* name */
1317 FALSE, /* partial_inplace */
1320 FALSE), /* pcrel_offset */
1322 HOWTO (R_PPC64_TLSLD,
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_dont, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC64_TLSLD", /* name */
1331 FALSE, /* partial_inplace */
1334 FALSE), /* pcrel_offset */
1336 HOWTO (R_PPC64_TOCSAVE,
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_dont, /* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_PPC64_TOCSAVE", /* name */
1345 FALSE, /* partial_inplace */
1348 FALSE), /* pcrel_offset */
1350 /* Computes the load module index of the load module that contains the
1351 definition of its TLS sym. */
1352 HOWTO (R_PPC64_DTPMOD64,
1354 4, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE, /* pc_relative */
1358 complain_overflow_dont, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc, /* special_function */
1360 "R_PPC64_DTPMOD64", /* name */
1361 FALSE, /* partial_inplace */
1363 ONES (64), /* dst_mask */
1364 FALSE), /* pcrel_offset */
1366 /* Computes a dtv-relative displacement, the difference between the value
1367 of sym+add and the base address of the thread-local storage block that
1368 contains the definition of sym, minus 0x8000. */
1369 HOWTO (R_PPC64_DTPREL64,
1371 4, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_dont, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL64", /* name */
1378 FALSE, /* partial_inplace */
1380 ONES (64), /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* A 16 bit dtprel reloc. */
1384 HOWTO (R_PPC64_DTPREL16,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_signed, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16, but no overflow. */
1399 HOWTO (R_PPC64_DTPREL16_LO,
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_dont, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_LO", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HI,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HI", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HA,
1430 16, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_signed, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HA", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHER,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHER", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1460 32, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHERA", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHEST", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1489 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1490 48, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_dont, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1498 FALSE, /* partial_inplace */
1500 0xffff, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16, but for insns with a DS field. */
1504 HOWTO (R_PPC64_DTPREL16_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_signed, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Like DTPREL16_DS, but no overflow. */
1519 HOWTO (R_PPC64_DTPREL16_LO_DS,
1521 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE, /* pc_relative */
1525 complain_overflow_dont, /* complain_on_overflow */
1526 ppc64_elf_unhandled_reloc, /* special_function */
1527 "R_PPC64_DTPREL16_LO_DS", /* name */
1528 FALSE, /* partial_inplace */
1530 0xfffc, /* dst_mask */
1531 FALSE), /* pcrel_offset */
1533 /* Computes a tp-relative displacement, the difference between the value of
1534 sym+add and the value of the thread pointer (r13). */
1535 HOWTO (R_PPC64_TPREL64,
1537 4, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_dont, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL64", /* name */
1544 FALSE, /* partial_inplace */
1546 ONES (64), /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* A 16 bit tprel reloc. */
1550 HOWTO (R_PPC64_TPREL16,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_signed, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16, but no overflow. */
1565 HOWTO (R_PPC64_TPREL16_LO,
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_dont, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_LO", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_LO, but next higher group of 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HI,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HI", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but adjust for low 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HA,
1596 16, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_signed, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HA", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HI, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHER,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHER", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHERA,
1626 32, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHERA", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHEST,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHEST", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1655 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1656 48, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_HIGHESTA", /* name */
1664 FALSE, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16, but for insns with a DS field. */
1670 HOWTO (R_PPC64_TPREL16_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_signed, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Like TPREL16_DS, but no overflow. */
1685 HOWTO (R_PPC64_TPREL16_LO_DS,
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE, /* pc_relative */
1691 complain_overflow_dont, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc, /* special_function */
1693 "R_PPC64_TPREL16_LO_DS", /* name */
1694 FALSE, /* partial_inplace */
1696 0xfffc, /* dst_mask */
1697 FALSE), /* pcrel_offset */
1699 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1700 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1701 to the first entry relative to the TOC base (r2). */
1702 HOWTO (R_PPC64_GOT_TLSGD16,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_signed, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16, but no overflow. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_dont, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_LO", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HI", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1747 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE, /* pc_relative */
1753 complain_overflow_signed, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc, /* special_function */
1755 "R_PPC64_GOT_TLSGD16_HA", /* name */
1756 FALSE, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE), /* pcrel_offset */
1761 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1762 with values (sym+add)@dtpmod and zero, and computes the offset to the
1763 first entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TLSLD16,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_signed, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_dont, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_LO", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HI", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE, /* pc_relative */
1815 complain_overflow_signed, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc, /* special_function */
1817 "R_PPC64_GOT_TLSLD16_HA", /* name */
1818 FALSE, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE), /* pcrel_offset */
1823 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1824 the offset to the entry relative to the TOC base (r2). */
1825 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_signed, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_DS, but no overflow. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_dont, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1849 FALSE, /* partial_inplace */
1851 0xfffc, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HI", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1870 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1871 16, /* rightshift */
1872 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE, /* pc_relative */
1876 complain_overflow_signed, /* complain_on_overflow */
1877 ppc64_elf_unhandled_reloc, /* special_function */
1878 "R_PPC64_GOT_DTPREL16_HA", /* name */
1879 FALSE, /* partial_inplace */
1881 0xffff, /* dst_mask */
1882 FALSE), /* pcrel_offset */
1884 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1885 offset to the entry relative to the TOC base (r2). */
1886 HOWTO (R_PPC64_GOT_TPREL16_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_signed, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_DS, but no overflow. */
1901 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_dont, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1910 FALSE, /* partial_inplace */
1912 0xfffc, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HI,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HI", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1931 HOWTO (R_PPC64_GOT_TPREL16_HA,
1932 16, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE, /* pc_relative */
1937 complain_overflow_signed, /* complain_on_overflow */
1938 ppc64_elf_unhandled_reloc, /* special_function */
1939 "R_PPC64_GOT_TPREL16_HA", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 FALSE), /* pcrel_offset */
1945 HOWTO (R_PPC64_JMP_IREL, /* type */
1947 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 FALSE, /* pc_relative */
1951 complain_overflow_dont, /* complain_on_overflow */
1952 ppc64_elf_unhandled_reloc, /* special_function */
1953 "R_PPC64_JMP_IREL", /* name */
1954 FALSE, /* partial_inplace */
1957 FALSE), /* pcrel_offset */
1959 HOWTO (R_PPC64_IRELATIVE, /* type */
1961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1963 FALSE, /* pc_relative */
1965 complain_overflow_dont, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_IRELATIVE", /* name */
1968 FALSE, /* partial_inplace */
1970 ONES (64), /* dst_mask */
1971 FALSE), /* pcrel_offset */
1973 /* A 16 bit relative relocation. */
1974 HOWTO (R_PPC64_REL16, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_signed, /* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* A 16 bit relative relocation without overflow. */
1989 HOWTO (R_PPC64_REL16_LO, /* type */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_dont,/* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_LO", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address. */
2004 HOWTO (R_PPC64_REL16_HI, /* type */
2005 16, /* rightshift */
2006 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 TRUE, /* pc_relative */
2010 complain_overflow_signed, /* complain_on_overflow */
2011 bfd_elf_generic_reloc, /* special_function */
2012 "R_PPC64_REL16_HI", /* name */
2013 FALSE, /* partial_inplace */
2015 0xffff, /* dst_mask */
2016 TRUE), /* pcrel_offset */
2018 /* The high order 16 bits of a relative address, plus 1 if the contents of
2019 the low 16 bits, treated as a signed number, is negative. */
2020 HOWTO (R_PPC64_REL16_HA, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 TRUE, /* pc_relative */
2026 complain_overflow_signed, /* complain_on_overflow */
2027 ppc64_elf_ha_reloc, /* special_function */
2028 "R_PPC64_REL16_HA", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 TRUE), /* pcrel_offset */
2034 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2035 HOWTO (R_PPC64_REL16DX_HA, /* type */
2036 16, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2039 TRUE, /* pc_relative */
2041 complain_overflow_signed, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_REL16DX_HA", /* name */
2044 FALSE, /* partial_inplace */
2046 0x1fffc1, /* dst_mask */
2047 TRUE), /* pcrel_offset */
2049 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2050 HOWTO (R_PPC64_16DX_HA, /* type */
2051 16, /* rightshift */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_signed, /* complain_on_overflow */
2057 ppc64_elf_ha_reloc, /* special_function */
2058 "R_PPC64_16DX_HA", /* name */
2059 FALSE, /* partial_inplace */
2061 0x1fffc1, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2065 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 bfd_elf_generic_reloc, /* special_function */
2073 "R_PPC64_ADDR16_HIGH", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2080 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_ha_reloc, /* special_function */
2088 "R_PPC64_ADDR16_HIGHA", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2095 HOWTO (R_PPC64_DTPREL16_HIGH,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_DTPREL16_HIGH", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2110 HOWTO (R_PPC64_DTPREL16_HIGHA,
2111 16, /* rightshift */
2112 1, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 ppc64_elf_unhandled_reloc, /* special_function */
2118 "R_PPC64_DTPREL16_HIGHA", /* name */
2119 FALSE, /* partial_inplace */
2121 0xffff, /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2125 HOWTO (R_PPC64_TPREL16_HIGH,
2126 16, /* rightshift */
2127 1, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 ppc64_elf_unhandled_reloc, /* special_function */
2133 "R_PPC64_TPREL16_HIGH", /* name */
2134 FALSE, /* partial_inplace */
2136 0xffff, /* dst_mask */
2137 FALSE), /* pcrel_offset */
2139 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2140 HOWTO (R_PPC64_TPREL16_HIGHA,
2141 16, /* rightshift */
2142 1, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 ppc64_elf_unhandled_reloc, /* special_function */
2148 "R_PPC64_TPREL16_HIGHA", /* name */
2149 FALSE, /* partial_inplace */
2151 0xffff, /* dst_mask */
2152 FALSE), /* pcrel_offset */
2154 /* Marker reloc on ELFv2 large-model function entry. */
2155 HOWTO (R_PPC64_ENTRY,
2157 2, /* size (0 = byte, 1 = short, 2 = long) */
2159 FALSE, /* pc_relative */
2161 complain_overflow_dont, /* complain_on_overflow */
2162 bfd_elf_generic_reloc, /* special_function */
2163 "R_PPC64_ENTRY", /* name */
2164 FALSE, /* partial_inplace */
2167 FALSE), /* pcrel_offset */
2169 /* Like ADDR64, but use local entry point of function. */
2170 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2172 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2174 FALSE, /* pc_relative */
2176 complain_overflow_dont, /* complain_on_overflow */
2177 bfd_elf_generic_reloc, /* special_function */
2178 "R_PPC64_ADDR64_LOCAL", /* name */
2179 FALSE, /* partial_inplace */
2181 ONES (64), /* dst_mask */
2182 FALSE), /* pcrel_offset */
2184 /* GNU extension to record C++ vtable hierarchy. */
2185 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2187 0, /* size (0 = byte, 1 = short, 2 = long) */
2189 FALSE, /* pc_relative */
2191 complain_overflow_dont, /* complain_on_overflow */
2192 NULL, /* special_function */
2193 "R_PPC64_GNU_VTINHERIT", /* name */
2194 FALSE, /* partial_inplace */
2197 FALSE), /* pcrel_offset */
2199 /* GNU extension to record C++ vtable member usage. */
2200 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2202 0, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE, /* pc_relative */
2206 complain_overflow_dont, /* complain_on_overflow */
2207 NULL, /* special_function */
2208 "R_PPC64_GNU_VTENTRY", /* name */
2209 FALSE, /* partial_inplace */
2212 FALSE), /* pcrel_offset */
2216 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2220 ppc_howto_init (void)
2222 unsigned int i, type;
2224 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2226 type = ppc64_elf_howto_raw[i].type;
2227 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2228 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2232 static reloc_howto_type *
2233 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2234 bfd_reloc_code_real_type code)
2236 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2238 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2239 /* Initialize howto table if needed. */
2247 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2249 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2251 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2253 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2255 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2257 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2259 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2261 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2263 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2265 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2267 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2269 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2271 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2273 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2275 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2277 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2279 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2281 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2283 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2285 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2287 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2289 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2291 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2293 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2295 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2297 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2299 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2301 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2303 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2305 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2307 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2309 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2311 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2313 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2315 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2317 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2319 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2321 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2323 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2325 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2327 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2329 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2331 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2333 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2335 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2337 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2339 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2341 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2343 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2345 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2347 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2349 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2351 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2353 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2355 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2357 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2359 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2361 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2363 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2365 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2367 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2369 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2371 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2373 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2375 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2377 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2379 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2381 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2383 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2385 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2387 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2389 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2391 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2393 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2395 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2397 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2399 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2401 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2403 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2405 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2407 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2409 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2411 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2413 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2415 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2417 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2419 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2421 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2423 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2425 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2427 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2429 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2431 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2433 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2435 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2437 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2439 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2441 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2443 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2445 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2447 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2449 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2451 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2453 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2455 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2457 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2459 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2461 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2463 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2465 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2467 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2469 case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA;
2471 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2473 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2475 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2477 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2479 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2483 return ppc64_elf_howto_table[r];
2486 static reloc_howto_type *
2487 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2492 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2493 if (ppc64_elf_howto_raw[i].name != NULL
2494 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2495 return &ppc64_elf_howto_raw[i];
2500 /* Set the howto pointer for a PowerPC ELF reloc. */
2503 ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
2504 Elf_Internal_Rela *dst)
2508 /* Initialize howto table if needed. */
2509 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2512 type = ELF64_R_TYPE (dst->r_info);
2513 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2515 /* xgettext:c-format */
2516 _bfd_error_handler (_("%B: invalid relocation type %d"),
2518 type = R_PPC64_NONE;
2520 cache_ptr->howto = ppc64_elf_howto_table[type];
2523 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2525 static bfd_reloc_status_type
2526 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2527 void *data, asection *input_section,
2528 bfd *output_bfd, char **error_message)
2530 enum elf_ppc64_reloc_type r_type;
2532 bfd_size_type octets;
2535 /* If this is a relocatable link (output_bfd test tells us), just
2536 call the generic function. Any adjustment will be done at final
2538 if (output_bfd != NULL)
2539 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2540 input_section, output_bfd, error_message);
2542 /* Adjust the addend for sign extension of the low 16 bits.
2543 We won't actually be using the low 16 bits, so trashing them
2545 reloc_entry->addend += 0x8000;
2546 r_type = reloc_entry->howto->type;
2547 if (r_type != R_PPC64_REL16DX_HA)
2548 return bfd_reloc_continue;
2551 if (!bfd_is_com_section (symbol->section))
2552 value = symbol->value;
2553 value += (reloc_entry->addend
2554 + symbol->section->output_offset
2555 + symbol->section->output_section->vma);
2556 value -= (reloc_entry->address
2557 + input_section->output_offset
2558 + input_section->output_section->vma);
2559 value = (bfd_signed_vma) value >> 16;
2561 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2562 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2564 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2565 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2566 if (value + 0x8000 > 0xffff)
2567 return bfd_reloc_overflow;
2568 return bfd_reloc_ok;
2571 static bfd_reloc_status_type
2572 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2573 void *data, asection *input_section,
2574 bfd *output_bfd, char **error_message)
2576 if (output_bfd != NULL)
2577 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2578 input_section, output_bfd, error_message);
2580 if (strcmp (symbol->section->name, ".opd") == 0
2581 && (symbol->section->owner->flags & DYNAMIC) == 0)
2583 bfd_vma dest = opd_entry_value (symbol->section,
2584 symbol->value + reloc_entry->addend,
2586 if (dest != (bfd_vma) -1)
2587 reloc_entry->addend = dest - (symbol->value
2588 + symbol->section->output_section->vma
2589 + symbol->section->output_offset);
2593 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2595 if (symbol->section->owner != abfd
2596 && symbol->section->owner != NULL
2597 && abiversion (symbol->section->owner) >= 2)
2601 for (i = 0; i < symbol->section->owner->symcount; ++i)
2603 asymbol *symdef = symbol->section->owner->outsymbols[i];
2605 if (strcmp (symdef->name, symbol->name) == 0)
2607 elfsym = (elf_symbol_type *) symdef;
2613 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2615 return bfd_reloc_continue;
2618 static bfd_reloc_status_type
2619 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2620 void *data, asection *input_section,
2621 bfd *output_bfd, char **error_message)
2624 enum elf_ppc64_reloc_type r_type;
2625 bfd_size_type octets;
2626 /* Assume 'at' branch hints. */
2627 bfd_boolean is_isa_v2 = TRUE;
2629 /* If this is a relocatable link (output_bfd test tells us), just
2630 call the generic function. Any adjustment will be done at final
2632 if (output_bfd != NULL)
2633 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2634 input_section, output_bfd, error_message);
2636 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2637 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2638 insn &= ~(0x01 << 21);
2639 r_type = reloc_entry->howto->type;
2640 if (r_type == R_PPC64_ADDR14_BRTAKEN
2641 || r_type == R_PPC64_REL14_BRTAKEN)
2642 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2646 /* Set 'a' bit. This is 0b00010 in BO field for branch
2647 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2648 for branch on CTR insns (BO == 1a00t or 1a01t). */
2649 if ((insn & (0x14 << 21)) == (0x04 << 21))
2651 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2661 if (!bfd_is_com_section (symbol->section))
2662 target = symbol->value;
2663 target += symbol->section->output_section->vma;
2664 target += symbol->section->output_offset;
2665 target += reloc_entry->addend;
2667 from = (reloc_entry->address
2668 + input_section->output_offset
2669 + input_section->output_section->vma);
2671 /* Invert 'y' bit if not the default. */
2672 if ((bfd_signed_vma) (target - from) < 0)
2675 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2677 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2678 input_section, output_bfd, error_message);
2681 static bfd_reloc_status_type
2682 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2683 void *data, asection *input_section,
2684 bfd *output_bfd, char **error_message)
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 /* Subtract the symbol section base address. */
2694 reloc_entry->addend -= symbol->section->output_section->vma;
2695 return bfd_reloc_continue;
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2700 void *data, asection *input_section,
2701 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 /* Subtract the symbol section base address. */
2711 reloc_entry->addend -= symbol->section->output_section->vma;
2713 /* Adjust the addend for sign extension of the low 16 bits. */
2714 reloc_entry->addend += 0x8000;
2715 return bfd_reloc_continue;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2720 void *data, asection *input_section,
2721 bfd *output_bfd, char **error_message)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd != NULL)
2729 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2730 input_section, output_bfd, error_message);
2732 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2734 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2736 /* Subtract the TOC base address. */
2737 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2738 return bfd_reloc_continue;
2741 static bfd_reloc_status_type
2742 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2743 void *data, asection *input_section,
2744 bfd *output_bfd, char **error_message)
2748 /* If this is a relocatable link (output_bfd test tells us), just
2749 call the generic function. Any adjustment will be done at final
2751 if (output_bfd != NULL)
2752 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2753 input_section, output_bfd, error_message);
2755 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2757 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2759 /* Subtract the TOC base address. */
2760 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry->addend += 0x8000;
2764 return bfd_reloc_continue;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2769 void *data, asection *input_section,
2770 bfd *output_bfd, char **error_message)
2773 bfd_size_type octets;
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd != NULL)
2779 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2780 input_section, output_bfd, error_message);
2782 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2784 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2786 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2787 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2788 return bfd_reloc_ok;
2791 static bfd_reloc_status_type
2792 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2793 void *data, asection *input_section,
2794 bfd *output_bfd, char **error_message)
2796 /* If this is a relocatable link (output_bfd test tells us), just
2797 call the generic function. Any adjustment will be done at final
2799 if (output_bfd != NULL)
2800 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2801 input_section, output_bfd, error_message);
2803 if (error_message != NULL)
2805 static char buf[60];
2806 sprintf (buf, "generic linker can't handle %s",
2807 reloc_entry->howto->name);
2808 *error_message = buf;
2810 return bfd_reloc_dangerous;
2813 /* Track GOT entries needed for a given symbol. We might need more
2814 than one got entry per symbol. */
2817 struct got_entry *next;
2819 /* The symbol addend that we'll be placing in the GOT. */
2822 /* Unlike other ELF targets, we use separate GOT entries for the same
2823 symbol referenced from different input files. This is to support
2824 automatic multiple TOC/GOT sections, where the TOC base can vary
2825 from one input file to another. After partitioning into TOC groups
2826 we merge entries within the group.
2828 Point to the BFD owning this GOT entry. */
2831 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2832 TLS_TPREL or TLS_DTPREL for tls entries. */
2833 unsigned char tls_type;
2835 /* Non-zero if got.ent points to real entry. */
2836 unsigned char is_indirect;
2838 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2841 bfd_signed_vma refcount;
2843 struct got_entry *ent;
2847 /* The same for PLT. */
2850 struct plt_entry *next;
2856 bfd_signed_vma refcount;
2861 struct ppc64_elf_obj_tdata
2863 struct elf_obj_tdata elf;
2865 /* Shortcuts to dynamic linker sections. */
2869 /* Used during garbage collection. We attach global symbols defined
2870 on removed .opd entries to this section so that the sym is removed. */
2871 asection *deleted_section;
2873 /* TLS local dynamic got entry handling. Support for multiple GOT
2874 sections means we potentially need one of these for each input bfd. */
2875 struct got_entry tlsld_got;
2878 /* A copy of relocs before they are modified for --emit-relocs. */
2879 Elf_Internal_Rela *relocs;
2881 /* Section contents. */
2885 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2886 the reloc to be in the range -32768 to 32767. */
2887 unsigned int has_small_toc_reloc : 1;
2889 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2890 instruction not one we handle. */
2891 unsigned int unexpected_toc_insn : 1;
2894 #define ppc64_elf_tdata(bfd) \
2895 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2897 #define ppc64_tlsld_got(bfd) \
2898 (&ppc64_elf_tdata (bfd)->tlsld_got)
2900 #define is_ppc64_elf(bfd) \
2901 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2902 && elf_object_id (bfd) == PPC64_ELF_DATA)
2904 /* Override the generic function because we store some extras. */
2907 ppc64_elf_mkobject (bfd *abfd)
2909 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2913 /* Fix bad default arch selected for a 64 bit input bfd when the
2914 default is 32 bit. Also select arch based on apuinfo. */
2917 ppc64_elf_object_p (bfd *abfd)
2919 if (!abfd->arch_info->the_default)
2922 if (abfd->arch_info->bits_per_word == 32)
2924 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2926 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2928 /* Relies on arch after 32 bit default being 64 bit default. */
2929 abfd->arch_info = abfd->arch_info->next;
2930 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2933 return _bfd_elf_ppc_set_arch (abfd);
2936 /* Support for core dump NOTE sections. */
2939 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2941 size_t offset, size;
2943 if (note->descsz != 504)
2947 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2950 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2956 /* Make a ".reg/999" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2958 size, note->descpos + offset);
2962 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2964 if (note->descsz != 136)
2967 elf_tdata (abfd)->core->pid
2968 = bfd_get_32 (abfd, note->descdata + 24);
2969 elf_tdata (abfd)->core->program
2970 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2971 elf_tdata (abfd)->core->command
2972 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2978 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2991 va_start (ap, note_type);
2992 memset (data, 0, sizeof (data));
2993 strncpy (data + 40, va_arg (ap, const char *), 16);
2994 strncpy (data + 56, va_arg (ap, const char *), 80);
2996 return elfcore_write_note (abfd, buf, bufsiz,
2997 "CORE", note_type, data, sizeof (data));
3008 va_start (ap, note_type);
3009 memset (data, 0, 112);
3010 pid = va_arg (ap, long);
3011 bfd_put_32 (abfd, pid, data + 32);
3012 cursig = va_arg (ap, int);
3013 bfd_put_16 (abfd, cursig, data + 12);
3014 greg = va_arg (ap, const void *);
3015 memcpy (data + 112, greg, 384);
3016 memset (data + 496, 0, 8);
3018 return elfcore_write_note (abfd, buf, bufsiz,
3019 "CORE", note_type, data, sizeof (data));
3024 /* Add extra PPC sections. */
3026 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3028 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3029 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3030 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3031 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3032 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3033 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3034 { NULL, 0, 0, 0, 0 }
3037 enum _ppc64_sec_type {
3043 struct _ppc64_elf_section_data
3045 struct bfd_elf_section_data elf;
3049 /* An array with one entry for each opd function descriptor,
3050 and some spares since opd entries may be either 16 or 24 bytes. */
3051 #define OPD_NDX(OFF) ((OFF) >> 4)
3052 struct _opd_sec_data
3054 /* Points to the function code section for local opd entries. */
3055 asection **func_sec;
3057 /* After editing .opd, adjust references to opd local syms. */
3061 /* An array for toc sections, indexed by offset/8. */
3062 struct _toc_sec_data
3064 /* Specifies the relocation symbol index used at a given toc offset. */
3067 /* And the relocation addend. */
3072 enum _ppc64_sec_type sec_type:2;
3074 /* Flag set when small branches are detected. Used to
3075 select suitable defaults for the stub group size. */
3076 unsigned int has_14bit_branch:1;
3079 #define ppc64_elf_section_data(sec) \
3080 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3083 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3085 if (!sec->used_by_bfd)
3087 struct _ppc64_elf_section_data *sdata;
3088 bfd_size_type amt = sizeof (*sdata);
3090 sdata = bfd_zalloc (abfd, amt);
3093 sec->used_by_bfd = sdata;
3096 return _bfd_elf_new_section_hook (abfd, sec);
3099 static struct _opd_sec_data *
3100 get_opd_info (asection * sec)
3103 && ppc64_elf_section_data (sec) != NULL
3104 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3105 return &ppc64_elf_section_data (sec)->u.opd;
3109 /* Parameters for the qsort hook. */
3110 static bfd_boolean synthetic_relocatable;
3111 static asection *synthetic_opd;
3113 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3116 compare_symbols (const void *ap, const void *bp)
3118 const asymbol *a = * (const asymbol **) ap;
3119 const asymbol *b = * (const asymbol **) bp;
3121 /* Section symbols first. */
3122 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3124 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3127 /* then .opd symbols. */
3128 if (synthetic_opd != NULL)
3130 if (strcmp (a->section->name, ".opd") == 0
3131 && strcmp (b->section->name, ".opd") != 0)
3133 if (strcmp (a->section->name, ".opd") != 0
3134 && strcmp (b->section->name, ".opd") == 0)
3138 /* then other code symbols. */
3139 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3140 == (SEC_CODE | SEC_ALLOC)
3141 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3142 != (SEC_CODE | SEC_ALLOC))
3145 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3146 != (SEC_CODE | SEC_ALLOC)
3147 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3148 == (SEC_CODE | SEC_ALLOC))
3151 if (synthetic_relocatable)
3153 if (a->section->id < b->section->id)
3156 if (a->section->id > b->section->id)
3160 if (a->value + a->section->vma < b->value + b->section->vma)
3163 if (a->value + a->section->vma > b->value + b->section->vma)
3166 /* For syms with the same value, prefer strong dynamic global function
3167 syms over other syms. */
3168 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3171 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3174 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3177 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3180 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3183 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3186 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3189 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3195 /* Search SYMS for a symbol of the given VALUE. */
3198 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3202 if (id == (unsigned) -1)
3206 mid = (lo + hi) >> 1;
3207 if (syms[mid]->value + syms[mid]->section->vma < value)
3209 else if (syms[mid]->value + syms[mid]->section->vma > value)
3219 mid = (lo + hi) >> 1;
3220 if (syms[mid]->section->id < id)
3222 else if (syms[mid]->section->id > id)
3224 else if (syms[mid]->value < value)
3226 else if (syms[mid]->value > value)
3236 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3238 bfd_vma vma = *(bfd_vma *) ptr;
3239 return ((section->flags & SEC_ALLOC) != 0
3240 && section->vma <= vma
3241 && vma < section->vma + section->size);
3244 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3245 entry syms. Also generate @plt symbols for the glink branch table.
3246 Returns count of synthetic symbols in RET or -1 on error. */
3249 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3250 long static_count, asymbol **static_syms,
3251 long dyn_count, asymbol **dyn_syms,
3258 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3259 asection *opd = NULL;
3260 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3262 int abi = abiversion (abfd);
3268 opd = bfd_get_section_by_name (abfd, ".opd");
3269 if (opd == NULL && abi == 1)
3281 symcount = static_count;
3283 symcount += dyn_count;
3287 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3291 if (!relocatable && static_count != 0 && dyn_count != 0)
3293 /* Use both symbol tables. */
3294 memcpy (syms, static_syms, static_count * sizeof (*syms));
3295 memcpy (syms + static_count, dyn_syms,
3296 (dyn_count + 1) * sizeof (*syms));
3298 else if (!relocatable && static_count == 0)
3299 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3301 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3303 synthetic_relocatable = relocatable;
3304 synthetic_opd = opd;
3305 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3307 if (!relocatable && symcount > 1)
3310 /* Trim duplicate syms, since we may have merged the normal and
3311 dynamic symbols. Actually, we only care about syms that have
3312 different values, so trim any with the same value. */
3313 for (i = 1, j = 1; i < symcount; ++i)
3314 if (syms[i - 1]->value + syms[i - 1]->section->vma
3315 != syms[i]->value + syms[i]->section->vma)
3316 syms[j++] = syms[i];
3321 /* Note that here and in compare_symbols we can't compare opd and
3322 sym->section directly. With separate debug info files, the
3323 symbols will be extracted from the debug file while abfd passed
3324 to this function is the real binary. */
3325 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3329 for (; i < symcount; ++i)
3330 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC
3331 | SEC_THREAD_LOCAL))
3332 != (SEC_CODE | SEC_ALLOC))
3333 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3337 for (; i < symcount; ++i)
3338 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3342 for (; i < symcount; ++i)
3343 if (strcmp (syms[i]->section->name, ".opd") != 0)
3347 for (; i < symcount; ++i)
3348 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3349 != (SEC_CODE | SEC_ALLOC))
3357 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3362 if (opdsymend == secsymend)
3365 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3366 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3370 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3377 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3381 while (r < opd->relocation + relcount
3382 && r->address < syms[i]->value + opd->vma)
3385 if (r == opd->relocation + relcount)
3388 if (r->address != syms[i]->value + opd->vma)
3391 if (r->howto->type != R_PPC64_ADDR64)
3394 sym = *r->sym_ptr_ptr;
3395 if (!sym_exists_at (syms, opdsymend, symcount,
3396 sym->section->id, sym->value + r->addend))
3399 size += sizeof (asymbol);
3400 size += strlen (syms[i]->name) + 2;
3406 s = *ret = bfd_malloc (size);
3413 names = (char *) (s + count);
3415 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3419 while (r < opd->relocation + relcount
3420 && r->address < syms[i]->value + opd->vma)
3423 if (r == opd->relocation + relcount)
3426 if (r->address != syms[i]->value + opd->vma)
3429 if (r->howto->type != R_PPC64_ADDR64)
3432 sym = *r->sym_ptr_ptr;
3433 if (!sym_exists_at (syms, opdsymend, symcount,
3434 sym->section->id, sym->value + r->addend))
3439 s->flags |= BSF_SYNTHETIC;
3440 s->section = sym->section;
3441 s->value = sym->value + r->addend;
3444 len = strlen (syms[i]->name);
3445 memcpy (names, syms[i]->name, len + 1);
3447 /* Have udata.p point back to the original symbol this
3448 synthetic symbol was derived from. */
3449 s->udata.p = syms[i];
3456 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3457 bfd_byte *contents = NULL;
3460 bfd_vma glink_vma = 0, resolv_vma = 0;
3461 asection *dynamic, *glink = NULL, *relplt = NULL;
3464 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3466 free_contents_and_exit_err:
3468 free_contents_and_exit:
3475 for (i = secsymend; i < opdsymend; ++i)
3479 /* Ignore bogus symbols. */
3480 if (syms[i]->value > opd->size - 8)
3483 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3484 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3487 size += sizeof (asymbol);
3488 size += strlen (syms[i]->name) + 2;
3492 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3494 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3496 bfd_byte *dynbuf, *extdyn, *extdynend;
3498 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3500 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3501 goto free_contents_and_exit_err;
3503 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3504 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3507 extdynend = extdyn + dynamic->size;
3508 for (; extdyn < extdynend; extdyn += extdynsize)
3510 Elf_Internal_Dyn dyn;
3511 (*swap_dyn_in) (abfd, extdyn, &dyn);
3513 if (dyn.d_tag == DT_NULL)
3516 if (dyn.d_tag == DT_PPC64_GLINK)
3518 /* The first glink stub starts at offset 32; see
3519 comment in ppc64_elf_finish_dynamic_sections. */
3520 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3521 /* The .glink section usually does not survive the final
3522 link; search for the section (usually .text) where the
3523 glink stubs now reside. */
3524 glink = bfd_sections_find_if (abfd, section_covers_vma,
3535 /* Determine __glink trampoline by reading the relative branch
3536 from the first glink stub. */
3538 unsigned int off = 0;
3540 while (bfd_get_section_contents (abfd, glink, buf,
3541 glink_vma + off - glink->vma, 4))
3543 unsigned int insn = bfd_get_32 (abfd, buf);
3545 if ((insn & ~0x3fffffc) == 0)
3547 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3556 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3558 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3561 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3562 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3563 goto free_contents_and_exit_err;
3565 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3566 size += plt_count * sizeof (asymbol);
3568 p = relplt->relocation;
3569 for (i = 0; i < plt_count; i++, p++)
3571 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3573 size += sizeof ("+0x") - 1 + 16;
3579 goto free_contents_and_exit;
3580 s = *ret = bfd_malloc (size);
3582 goto free_contents_and_exit_err;
3584 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3586 for (i = secsymend; i < opdsymend; ++i)
3590 if (syms[i]->value > opd->size - 8)
3593 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3594 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3598 asection *sec = abfd->sections;
3605 long mid = (lo + hi) >> 1;
3606 if (syms[mid]->section->vma < ent)
3608 else if (syms[mid]->section->vma > ent)
3612 sec = syms[mid]->section;
3617 if (lo >= hi && lo > codesecsym)
3618 sec = syms[lo - 1]->section;
3620 for (; sec != NULL; sec = sec->next)
3624 /* SEC_LOAD may not be set if SEC is from a separate debug
3626 if ((sec->flags & SEC_ALLOC) == 0)
3628 if ((sec->flags & SEC_CODE) != 0)
3631 s->flags |= BSF_SYNTHETIC;
3632 s->value = ent - s->section->vma;
3635 len = strlen (syms[i]->name);
3636 memcpy (names, syms[i]->name, len + 1);
3638 /* Have udata.p point back to the original symbol this
3639 synthetic symbol was derived from. */
3640 s->udata.p = syms[i];
3646 if (glink != NULL && relplt != NULL)
3650 /* Add a symbol for the main glink trampoline. */
3651 memset (s, 0, sizeof *s);
3653 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3655 s->value = resolv_vma - glink->vma;
3657 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3658 names += sizeof ("__glink_PLTresolve");
3663 /* FIXME: It would be very much nicer to put sym@plt on the
3664 stub rather than on the glink branch table entry. The
3665 objdump disassembler would then use a sensible symbol
3666 name on plt calls. The difficulty in doing so is
3667 a) finding the stubs, and,
3668 b) matching stubs against plt entries, and,
3669 c) there can be multiple stubs for a given plt entry.
3671 Solving (a) could be done by code scanning, but older
3672 ppc64 binaries used different stubs to current code.
3673 (b) is the tricky one since you need to known the toc
3674 pointer for at least one function that uses a pic stub to
3675 be able to calculate the plt address referenced.
3676 (c) means gdb would need to set multiple breakpoints (or
3677 find the glink branch itself) when setting breakpoints
3678 for pending shared library loads. */
3679 p = relplt->relocation;
3680 for (i = 0; i < plt_count; i++, p++)
3684 *s = **p->sym_ptr_ptr;
3685 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3686 we are defining a symbol, ensure one of them is set. */
3687 if ((s->flags & BSF_LOCAL) == 0)
3688 s->flags |= BSF_GLOBAL;
3689 s->flags |= BSF_SYNTHETIC;
3691 s->value = glink_vma - glink->vma;
3694 len = strlen ((*p->sym_ptr_ptr)->name);
3695 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3699 memcpy (names, "+0x", sizeof ("+0x") - 1);
3700 names += sizeof ("+0x") - 1;
3701 bfd_sprintf_vma (abfd, names, p->addend);
3702 names += strlen (names);
3704 memcpy (names, "@plt", sizeof ("@plt"));
3705 names += sizeof ("@plt");
3725 /* The following functions are specific to the ELF linker, while
3726 functions above are used generally. Those named ppc64_elf_* are
3727 called by the main ELF linker code. They appear in this file more
3728 or less in the order in which they are called. eg.
3729 ppc64_elf_check_relocs is called early in the link process,
3730 ppc64_elf_finish_dynamic_sections is one of the last functions
3733 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3734 functions have both a function code symbol and a function descriptor
3735 symbol. A call to foo in a relocatable object file looks like:
3742 The function definition in another object file might be:
3746 . .quad .TOC.@tocbase
3752 When the linker resolves the call during a static link, the branch
3753 unsurprisingly just goes to .foo and the .opd information is unused.
3754 If the function definition is in a shared library, things are a little
3755 different: The call goes via a plt call stub, the opd information gets
3756 copied to the plt, and the linker patches the nop.
3764 . std 2,40(1) # in practice, the call stub
3765 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3766 . addi 11,11,Lfoo@toc@l # this is the general idea
3774 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3776 The "reloc ()" notation is supposed to indicate that the linker emits
3777 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3780 What are the difficulties here? Well, firstly, the relocations
3781 examined by the linker in check_relocs are against the function code
3782 sym .foo, while the dynamic relocation in the plt is emitted against
3783 the function descriptor symbol, foo. Somewhere along the line, we need
3784 to carefully copy dynamic link information from one symbol to the other.
3785 Secondly, the generic part of the elf linker will make .foo a dynamic
3786 symbol as is normal for most other backends. We need foo dynamic
3787 instead, at least for an application final link. However, when
3788 creating a shared library containing foo, we need to have both symbols
3789 dynamic so that references to .foo are satisfied during the early
3790 stages of linking. Otherwise the linker might decide to pull in a
3791 definition from some other object, eg. a static library.
3793 Update: As of August 2004, we support a new convention. Function
3794 calls may use the function descriptor symbol, ie. "bl foo". This
3795 behaves exactly as "bl .foo". */
3797 /* Of those relocs that might be copied as dynamic relocs, this
3798 function selects those that must be copied when linking a shared
3799 library or PIE, even when the symbol is local. */
3802 must_be_dyn_reloc (struct bfd_link_info *info,
3803 enum elf_ppc64_reloc_type r_type)
3808 /* Only relative relocs can be resolved when the object load
3809 address isn't fixed. DTPREL64 is excluded because the
3810 dynamic linker needs to differentiate global dynamic from
3811 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3819 case R_PPC64_TPREL16:
3820 case R_PPC64_TPREL16_LO:
3821 case R_PPC64_TPREL16_HI:
3822 case R_PPC64_TPREL16_HA:
3823 case R_PPC64_TPREL16_DS:
3824 case R_PPC64_TPREL16_LO_DS:
3825 case R_PPC64_TPREL16_HIGH:
3826 case R_PPC64_TPREL16_HIGHA:
3827 case R_PPC64_TPREL16_HIGHER:
3828 case R_PPC64_TPREL16_HIGHERA:
3829 case R_PPC64_TPREL16_HIGHEST:
3830 case R_PPC64_TPREL16_HIGHESTA:
3831 case R_PPC64_TPREL64:
3832 /* These relocations are relative but in a shared library the
3833 linker doesn't know the thread pointer base. */
3834 return bfd_link_dll (info);
3838 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3839 copying dynamic variables from a shared lib into an app's dynbss
3840 section, and instead use a dynamic relocation to point into the
3841 shared lib. With code that gcc generates, it's vital that this be
3842 enabled; In the PowerPC64 ABI, the address of a function is actually
3843 the address of a function descriptor, which resides in the .opd
3844 section. gcc uses the descriptor directly rather than going via the
3845 GOT as some other ABI's do, which means that initialized function
3846 pointers must reference the descriptor. Thus, a function pointer
3847 initialized to the address of a function in a shared library will
3848 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3849 redefines the function descriptor symbol to point to the copy. This
3850 presents a problem as a plt entry for that function is also
3851 initialized from the function descriptor symbol and the copy reloc
3852 may not be initialized first. */
3853 #define ELIMINATE_COPY_RELOCS 1
3855 /* Section name for stubs is the associated section name plus this
3857 #define STUB_SUFFIX ".stub"
3860 ppc_stub_long_branch:
3861 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3862 destination, but a 24 bit branch in a stub section will reach.
3865 ppc_stub_plt_branch:
3866 Similar to the above, but a 24 bit branch in the stub section won't
3867 reach its destination.
3868 . addis %r11,%r2,xxx@toc@ha
3869 . ld %r12,xxx@toc@l(%r11)
3874 Used to call a function in a shared library. If it so happens that
3875 the plt entry referenced crosses a 64k boundary, then an extra
3876 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3878 . addis %r11,%r2,xxx@toc@ha
3879 . ld %r12,xxx+0@toc@l(%r11)
3881 . ld %r2,xxx+8@toc@l(%r11)
3882 . ld %r11,xxx+16@toc@l(%r11)
3885 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3886 code to adjust the value and save r2 to support multiple toc sections.
3887 A ppc_stub_long_branch with an r2 offset looks like:
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3893 A ppc_stub_plt_branch with an r2 offset looks like:
3895 . addis %r11,%r2,xxx@toc@ha
3896 . ld %r12,xxx@toc@l(%r11)
3897 . addis %r2,%r2,off@ha
3898 . addi %r2,%r2,off@l
3902 In cases where the "addis" instruction would add zero, the "addis" is
3903 omitted and following instructions modified slightly in some cases.
3906 enum ppc_stub_type {
3908 ppc_stub_long_branch,
3909 ppc_stub_long_branch_r2off,
3910 ppc_stub_plt_branch,
3911 ppc_stub_plt_branch_r2off,
3913 ppc_stub_plt_call_r2save,
3914 ppc_stub_global_entry,
3918 /* Information on stub grouping. */
3921 /* The stub section. */
3923 /* This is the section to which stubs in the group will be attached. */
3926 struct map_stub *next;
3927 /* Whether to emit a copy of register save/restore functions in this
3930 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3931 or -1u if no such stub with bctrl exists. */
3932 unsigned int tls_get_addr_opt_bctrl;
3935 struct ppc_stub_hash_entry {
3937 /* Base hash table entry structure. */
3938 struct bfd_hash_entry root;
3940 enum ppc_stub_type stub_type;
3942 /* Group information. */
3943 struct map_stub *group;
3945 /* Offset within stub_sec of the beginning of this stub. */
3946 bfd_vma stub_offset;
3948 /* Given the symbol's value and its section we can determine its final
3949 value when building the stubs (so the stub knows where to jump. */
3950 bfd_vma target_value;
3951 asection *target_section;
3953 /* The symbol table entry, if any, that this was derived from. */
3954 struct ppc_link_hash_entry *h;
3955 struct plt_entry *plt_ent;
3957 /* Symbol st_other. */
3958 unsigned char other;
3961 struct ppc_branch_hash_entry {
3963 /* Base hash table entry structure. */
3964 struct bfd_hash_entry root;
3966 /* Offset within branch lookup table. */
3967 unsigned int offset;
3969 /* Generation marker. */
3973 /* Used to track dynamic relocations for local symbols. */
3974 struct ppc_dyn_relocs
3976 struct ppc_dyn_relocs *next;
3978 /* The input section of the reloc. */
3981 /* Total number of relocs copied for the input section. */
3982 unsigned int count : 31;
3984 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3985 unsigned int ifunc : 1;
3988 struct ppc_link_hash_entry
3990 struct elf_link_hash_entry elf;
3993 /* A pointer to the most recently used stub hash entry against this
3995 struct ppc_stub_hash_entry *stub_cache;
3997 /* A pointer to the next symbol starting with a '.' */
3998 struct ppc_link_hash_entry *next_dot_sym;
4001 /* Track dynamic relocs copied for this symbol. */
4002 struct elf_dyn_relocs *dyn_relocs;
4004 /* Link between function code and descriptor symbols. */
4005 struct ppc_link_hash_entry *oh;
4007 /* Flag function code and descriptor symbols. */
4008 unsigned int is_func:1;
4009 unsigned int is_func_descriptor:1;
4010 unsigned int fake:1;
4012 /* Whether global opd/toc sym has been adjusted or not.
4013 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4014 should be set for all globals defined in any opd/toc section. */
4015 unsigned int adjust_done:1;
4017 /* Set if this is an out-of-line register save/restore function,
4018 with non-standard calling convention. */
4019 unsigned int save_res:1;
4021 /* Set if a duplicate symbol with non-zero localentry is detected,
4022 even when the duplicate symbol does not provide a definition. */
4023 unsigned int non_zero_localentry:1;
4025 /* Contexts in which symbol is used in the GOT (or TOC).
4026 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4027 corresponding relocs are encountered during check_relocs.
4028 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4029 indicate the corresponding GOT entry type is not needed.
4030 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4031 a TPREL one. We use a separate flag rather than setting TPREL
4032 just for convenience in distinguishing the two cases. */
4033 #define TLS_GD 1 /* GD reloc. */
4034 #define TLS_LD 2 /* LD reloc. */
4035 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4036 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4037 #define TLS_TLS 16 /* Any TLS reloc. */
4038 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4039 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4040 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4041 unsigned char tls_mask;
4044 /* ppc64 ELF linker hash table. */
4046 struct ppc_link_hash_table
4048 struct elf_link_hash_table elf;
4050 /* The stub hash table. */
4051 struct bfd_hash_table stub_hash_table;
4053 /* Another hash table for plt_branch stubs. */
4054 struct bfd_hash_table branch_hash_table;
4056 /* Hash table for function prologue tocsave. */
4057 htab_t tocsave_htab;
4059 /* Various options and other info passed from the linker. */
4060 struct ppc64_elf_params *params;
4062 /* The size of sec_info below. */
4063 unsigned int sec_info_arr_size;
4065 /* Per-section array of extra section info. Done this way rather
4066 than as part of ppc64_elf_section_data so we have the info for
4067 non-ppc64 sections. */
4070 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4075 /* The section group that this section belongs to. */
4076 struct map_stub *group;
4077 /* A temp section list pointer. */
4082 /* Linked list of groups. */
4083 struct map_stub *group;
4085 /* Temp used when calculating TOC pointers. */
4088 asection *toc_first_sec;
4090 /* Used when adding symbols. */
4091 struct ppc_link_hash_entry *dot_syms;
4093 /* Shortcuts to get to dynamic linker sections. */
4098 asection *glink_eh_frame;
4100 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4101 struct ppc_link_hash_entry *tls_get_addr;
4102 struct ppc_link_hash_entry *tls_get_addr_fd;
4104 /* The size of reliplt used by got entry relocs. */
4105 bfd_size_type got_reli_size;
4108 unsigned long stub_count[ppc_stub_global_entry];
4110 /* Number of stubs against global syms. */
4111 unsigned long stub_globals;
4113 /* Set if we're linking code with function descriptors. */
4114 unsigned int opd_abi:1;
4116 /* Support for multiple toc sections. */
4117 unsigned int do_multi_toc:1;
4118 unsigned int multi_toc_needed:1;
4119 unsigned int second_toc_pass:1;
4120 unsigned int do_toc_opt:1;
4122 /* Set if tls optimization is enabled. */
4123 unsigned int do_tls_opt:1;
4126 unsigned int stub_error:1;
4128 /* Whether func_desc_adjust needs to be run over symbols. */
4129 unsigned int need_func_desc_adj:1;
4131 /* Whether there exist local gnu indirect function resolvers,
4132 referenced by dynamic relocations. */
4133 unsigned int local_ifunc_resolver:1;
4134 unsigned int maybe_local_ifunc_resolver:1;
4136 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4137 unsigned int has_plt_localentry0:1;
4139 /* Incremented every time we size stubs. */
4140 unsigned int stub_iteration;
4142 /* Small local sym cache. */
4143 struct sym_cache sym_cache;
4146 /* Rename some of the generic section flags to better document how they
4149 /* Nonzero if this section has TLS related relocations. */
4150 #define has_tls_reloc sec_flg0
4152 /* Nonzero if this section has a call to __tls_get_addr. */
4153 #define has_tls_get_addr_call sec_flg1
4155 /* Nonzero if this section has any toc or got relocs. */
4156 #define has_toc_reloc sec_flg2
4158 /* Nonzero if this section has a call to another section that uses
4160 #define makes_toc_func_call sec_flg3
4162 /* Recursion protection when determining above flag. */
4163 #define call_check_in_progress sec_flg4
4164 #define call_check_done sec_flg5
4166 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4168 #define ppc_hash_table(p) \
4169 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4170 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4172 #define ppc_stub_hash_lookup(table, string, create, copy) \
4173 ((struct ppc_stub_hash_entry *) \
4174 bfd_hash_lookup ((table), (string), (create), (copy)))
4176 #define ppc_branch_hash_lookup(table, string, create, copy) \
4177 ((struct ppc_branch_hash_entry *) \
4178 bfd_hash_lookup ((table), (string), (create), (copy)))
4180 /* Create an entry in the stub hash table. */
4182 static struct bfd_hash_entry *
4183 stub_hash_newfunc (struct bfd_hash_entry *entry,
4184 struct bfd_hash_table *table,
4187 /* Allocate the structure if it has not already been allocated by a
4191 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4196 /* Call the allocation method of the superclass. */
4197 entry = bfd_hash_newfunc (entry, table, string);
4200 struct ppc_stub_hash_entry *eh;
4202 /* Initialize the local fields. */
4203 eh = (struct ppc_stub_hash_entry *) entry;
4204 eh->stub_type = ppc_stub_none;
4206 eh->stub_offset = 0;
4207 eh->target_value = 0;
4208 eh->target_section = NULL;
4217 /* Create an entry in the branch hash table. */
4219 static struct bfd_hash_entry *
4220 branch_hash_newfunc (struct bfd_hash_entry *entry,
4221 struct bfd_hash_table *table,
4224 /* Allocate the structure if it has not already been allocated by a
4228 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4233 /* Call the allocation method of the superclass. */
4234 entry = bfd_hash_newfunc (entry, table, string);
4237 struct ppc_branch_hash_entry *eh;
4239 /* Initialize the local fields. */
4240 eh = (struct ppc_branch_hash_entry *) entry;
4248 /* Create an entry in a ppc64 ELF linker hash table. */
4250 static struct bfd_hash_entry *
4251 link_hash_newfunc (struct bfd_hash_entry *entry,
4252 struct bfd_hash_table *table,
4255 /* Allocate the structure if it has not already been allocated by a
4259 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4264 /* Call the allocation method of the superclass. */
4265 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4268 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4270 memset (&eh->u.stub_cache, 0,
4271 (sizeof (struct ppc_link_hash_entry)
4272 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4274 /* When making function calls, old ABI code references function entry
4275 points (dot symbols), while new ABI code references the function
4276 descriptor symbol. We need to make any combination of reference and
4277 definition work together, without breaking archive linking.
4279 For a defined function "foo" and an undefined call to "bar":
4280 An old object defines "foo" and ".foo", references ".bar" (possibly
4282 A new object defines "foo" and references "bar".
4284 A new object thus has no problem with its undefined symbols being
4285 satisfied by definitions in an old object. On the other hand, the
4286 old object won't have ".bar" satisfied by a new object.
4288 Keep a list of newly added dot-symbols. */
4290 if (string[0] == '.')
4292 struct ppc_link_hash_table *htab;
4294 htab = (struct ppc_link_hash_table *) table;
4295 eh->u.next_dot_sym = htab->dot_syms;
4296 htab->dot_syms = eh;
4303 struct tocsave_entry {
4309 tocsave_htab_hash (const void *p)
4311 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4312 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4316 tocsave_htab_eq (const void *p1, const void *p2)
4318 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4319 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4320 return e1->sec == e2->sec && e1->offset == e2->offset;
4323 /* Destroy a ppc64 ELF linker hash table. */
4326 ppc64_elf_link_hash_table_free (bfd *obfd)
4328 struct ppc_link_hash_table *htab;
4330 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4331 if (htab->tocsave_htab)
4332 htab_delete (htab->tocsave_htab);
4333 bfd_hash_table_free (&htab->branch_hash_table);
4334 bfd_hash_table_free (&htab->stub_hash_table);
4335 _bfd_elf_link_hash_table_free (obfd);
4338 /* Create a ppc64 ELF linker hash table. */
4340 static struct bfd_link_hash_table *
4341 ppc64_elf_link_hash_table_create (bfd *abfd)
4343 struct ppc_link_hash_table *htab;
4344 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4346 htab = bfd_zmalloc (amt);
4350 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4351 sizeof (struct ppc_link_hash_entry),
4358 /* Init the stub hash table too. */
4359 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4360 sizeof (struct ppc_stub_hash_entry)))
4362 _bfd_elf_link_hash_table_free (abfd);
4366 /* And the branch hash table. */
4367 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4368 sizeof (struct ppc_branch_hash_entry)))
4370 bfd_hash_table_free (&htab->stub_hash_table);
4371 _bfd_elf_link_hash_table_free (abfd);
4375 htab->tocsave_htab = htab_try_create (1024,
4379 if (htab->tocsave_htab == NULL)
4381 ppc64_elf_link_hash_table_free (abfd);
4384 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4386 /* Initializing two fields of the union is just cosmetic. We really
4387 only care about glist, but when compiled on a 32-bit host the
4388 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4389 debugger inspection of these fields look nicer. */
4390 htab->elf.init_got_refcount.refcount = 0;
4391 htab->elf.init_got_refcount.glist = NULL;
4392 htab->elf.init_plt_refcount.refcount = 0;
4393 htab->elf.init_plt_refcount.glist = NULL;
4394 htab->elf.init_got_offset.offset = 0;
4395 htab->elf.init_got_offset.glist = NULL;
4396 htab->elf.init_plt_offset.offset = 0;
4397 htab->elf.init_plt_offset.glist = NULL;
4399 return &htab->elf.root;
4402 /* Create sections for linker generated code. */
4405 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4407 struct ppc_link_hash_table *htab;
4410 htab = ppc_hash_table (info);
4412 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4413 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4414 if (htab->params->save_restore_funcs)
4416 /* Create .sfpr for code to save and restore fp regs. */
4417 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4419 if (htab->sfpr == NULL
4420 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4424 if (bfd_link_relocatable (info))
4427 /* Create .glink for lazy dynamic linking support. */
4428 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4430 if (htab->glink == NULL
4431 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4434 if (!info->no_ld_generated_unwind_info)
4436 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4437 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4438 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4441 if (htab->glink_eh_frame == NULL
4442 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4446 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4447 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4448 if (htab->elf.iplt == NULL
4449 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4452 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4453 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4455 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4456 if (htab->elf.irelplt == NULL
4457 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4460 /* Create branch lookup table for plt_branch stubs. */
4461 flags = (SEC_ALLOC | SEC_LOAD
4462 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4463 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4465 if (htab->brlt == NULL
4466 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4469 if (!bfd_link_pic (info))
4472 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4473 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4474 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4477 if (htab->relbrlt == NULL
4478 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4484 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4487 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4488 struct ppc64_elf_params *params)
4490 struct ppc_link_hash_table *htab;
4492 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4494 /* Always hook our dynamic sections into the first bfd, which is the
4495 linker created stub bfd. This ensures that the GOT header is at
4496 the start of the output TOC section. */
4497 htab = ppc_hash_table (info);
4498 htab->elf.dynobj = params->stub_bfd;
4499 htab->params = params;
4501 return create_linkage_sections (htab->elf.dynobj, info);
4504 /* Build a name for an entry in the stub hash table. */
4507 ppc_stub_name (const asection *input_section,
4508 const asection *sym_sec,
4509 const struct ppc_link_hash_entry *h,
4510 const Elf_Internal_Rela *rel)
4515 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4516 offsets from a sym as a branch target? In fact, we could
4517 probably assume the addend is always zero. */
4518 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4522 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4523 stub_name = bfd_malloc (len);
4524 if (stub_name == NULL)
4527 len = sprintf (stub_name, "%08x.%s+%x",
4528 input_section->id & 0xffffffff,
4529 h->elf.root.root.string,
4530 (int) rel->r_addend & 0xffffffff);
4534 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4535 stub_name = bfd_malloc (len);
4536 if (stub_name == NULL)
4539 len = sprintf (stub_name, "%08x.%x:%x+%x",
4540 input_section->id & 0xffffffff,
4541 sym_sec->id & 0xffffffff,
4542 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4543 (int) rel->r_addend & 0xffffffff);
4545 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4546 stub_name[len - 2] = 0;
4550 /* Look up an entry in the stub hash. Stub entries are cached because
4551 creating the stub name takes a bit of time. */
4553 static struct ppc_stub_hash_entry *
4554 ppc_get_stub_entry (const asection *input_section,
4555 const asection *sym_sec,
4556 struct ppc_link_hash_entry *h,
4557 const Elf_Internal_Rela *rel,
4558 struct ppc_link_hash_table *htab)
4560 struct ppc_stub_hash_entry *stub_entry;
4561 struct map_stub *group;
4563 /* If this input section is part of a group of sections sharing one
4564 stub section, then use the id of the first section in the group.
4565 Stub names need to include a section id, as there may well be
4566 more than one stub used to reach say, printf, and we need to
4567 distinguish between them. */
4568 group = htab->sec_info[input_section->id].u.group;
4572 if (h != NULL && h->u.stub_cache != NULL
4573 && h->u.stub_cache->h == h
4574 && h->u.stub_cache->group == group)
4576 stub_entry = h->u.stub_cache;
4582 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4583 if (stub_name == NULL)
4586 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4587 stub_name, FALSE, FALSE);
4589 h->u.stub_cache = stub_entry;
4597 /* Add a new stub entry to the stub hash. Not all fields of the new
4598 stub entry are initialised. */
4600 static struct ppc_stub_hash_entry *
4601 ppc_add_stub (const char *stub_name,
4603 struct bfd_link_info *info)
4605 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4606 struct map_stub *group;
4609 struct ppc_stub_hash_entry *stub_entry;
4611 group = htab->sec_info[section->id].u.group;
4612 link_sec = group->link_sec;
4613 stub_sec = group->stub_sec;
4614 if (stub_sec == NULL)
4620 namelen = strlen (link_sec->name);
4621 len = namelen + sizeof (STUB_SUFFIX);
4622 s_name = bfd_alloc (htab->params->stub_bfd, len);
4626 memcpy (s_name, link_sec->name, namelen);
4627 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4628 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4629 if (stub_sec == NULL)
4631 group->stub_sec = stub_sec;
4634 /* Enter this entry into the linker stub hash table. */
4635 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4637 if (stub_entry == NULL)
4639 /* xgettext:c-format */
4640 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4641 section->owner, stub_name);
4645 stub_entry->group = group;
4646 stub_entry->stub_offset = 0;
4650 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4651 not already done. */
4654 create_got_section (bfd *abfd, struct bfd_link_info *info)
4656 asection *got, *relgot;
4658 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4660 if (!is_ppc64_elf (abfd))
4666 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4669 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4670 | SEC_LINKER_CREATED);
4672 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4674 || !bfd_set_section_alignment (abfd, got, 3))
4677 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4678 flags | SEC_READONLY);
4680 || ! bfd_set_section_alignment (abfd, relgot, 3))
4683 ppc64_elf_tdata (abfd)->got = got;
4684 ppc64_elf_tdata (abfd)->relgot = relgot;
4688 /* Follow indirect and warning symbol links. */
4690 static inline struct bfd_link_hash_entry *
4691 follow_link (struct bfd_link_hash_entry *h)
4693 while (h->type == bfd_link_hash_indirect
4694 || h->type == bfd_link_hash_warning)
4699 static inline struct elf_link_hash_entry *
4700 elf_follow_link (struct elf_link_hash_entry *h)
4702 return (struct elf_link_hash_entry *) follow_link (&h->root);
4705 static inline struct ppc_link_hash_entry *
4706 ppc_follow_link (struct ppc_link_hash_entry *h)
4708 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4711 /* Merge PLT info on FROM with that on TO. */
4714 move_plt_plist (struct ppc_link_hash_entry *from,
4715 struct ppc_link_hash_entry *to)
4717 if (from->elf.plt.plist != NULL)
4719 if (to->elf.plt.plist != NULL)
4721 struct plt_entry **entp;
4722 struct plt_entry *ent;
4724 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4726 struct plt_entry *dent;
4728 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4729 if (dent->addend == ent->addend)
4731 dent->plt.refcount += ent->plt.refcount;
4738 *entp = to->elf.plt.plist;
4741 to->elf.plt.plist = from->elf.plt.plist;
4742 from->elf.plt.plist = NULL;
4746 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4749 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4750 struct elf_link_hash_entry *dir,
4751 struct elf_link_hash_entry *ind)
4753 struct ppc_link_hash_entry *edir, *eind;
4755 edir = (struct ppc_link_hash_entry *) dir;
4756 eind = (struct ppc_link_hash_entry *) ind;
4758 edir->is_func |= eind->is_func;
4759 edir->is_func_descriptor |= eind->is_func_descriptor;
4760 edir->tls_mask |= eind->tls_mask;
4761 if (eind->oh != NULL)
4762 edir->oh = ppc_follow_link (eind->oh);
4764 if (edir->elf.versioned != versioned_hidden)
4765 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4766 edir->elf.ref_regular |= eind->elf.ref_regular;
4767 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4768 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4769 edir->elf.needs_plt |= eind->elf.needs_plt;
4770 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4772 /* If we were called to copy over info for a weak sym, don't copy
4773 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4774 in order to simplify readonly_dynrelocs and save a field in the
4775 symbol hash entry, but that means dyn_relocs can't be used in any
4776 tests about a specific symbol, or affect other symbol flags which
4778 if (eind->elf.root.type != bfd_link_hash_indirect)
4781 /* Copy over any dynamic relocs we may have on the indirect sym. */
4782 if (eind->dyn_relocs != NULL)
4784 if (edir->dyn_relocs != NULL)
4786 struct elf_dyn_relocs **pp;
4787 struct elf_dyn_relocs *p;
4789 /* Add reloc counts against the indirect sym to the direct sym
4790 list. Merge any entries against the same section. */
4791 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4793 struct elf_dyn_relocs *q;
4795 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4796 if (q->sec == p->sec)
4798 q->pc_count += p->pc_count;
4799 q->count += p->count;
4806 *pp = edir->dyn_relocs;
4809 edir->dyn_relocs = eind->dyn_relocs;
4810 eind->dyn_relocs = NULL;
4813 /* Copy over got entries that we may have already seen to the
4814 symbol which just became indirect. */
4815 if (eind->elf.got.glist != NULL)
4817 if (edir->elf.got.glist != NULL)
4819 struct got_entry **entp;
4820 struct got_entry *ent;
4822 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4824 struct got_entry *dent;
4826 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4827 if (dent->addend == ent->addend
4828 && dent->owner == ent->owner
4829 && dent->tls_type == ent->tls_type)
4831 dent->got.refcount += ent->got.refcount;
4838 *entp = edir->elf.got.glist;
4841 edir->elf.got.glist = eind->elf.got.glist;
4842 eind->elf.got.glist = NULL;
4845 /* And plt entries. */
4846 move_plt_plist (eind, edir);
4848 if (eind->elf.dynindx != -1)
4850 if (edir->elf.dynindx != -1)
4851 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4852 edir->elf.dynstr_index);
4853 edir->elf.dynindx = eind->elf.dynindx;
4854 edir->elf.dynstr_index = eind->elf.dynstr_index;
4855 eind->elf.dynindx = -1;
4856 eind->elf.dynstr_index = 0;
4860 /* Find the function descriptor hash entry from the given function code
4861 hash entry FH. Link the entries via their OH fields. */
4863 static struct ppc_link_hash_entry *
4864 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4866 struct ppc_link_hash_entry *fdh = fh->oh;
4870 const char *fd_name = fh->elf.root.root.string + 1;
4872 fdh = (struct ppc_link_hash_entry *)
4873 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4877 fdh->is_func_descriptor = 1;
4883 fdh = ppc_follow_link (fdh);
4884 fdh->is_func_descriptor = 1;
4889 /* Make a fake function descriptor sym for the undefined code sym FH. */
4891 static struct ppc_link_hash_entry *
4892 make_fdh (struct bfd_link_info *info,
4893 struct ppc_link_hash_entry *fh)
4895 bfd *abfd = fh->elf.root.u.undef.abfd;
4896 struct bfd_link_hash_entry *bh = NULL;
4897 struct ppc_link_hash_entry *fdh;
4898 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4902 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4903 fh->elf.root.root.string + 1,
4904 flags, bfd_und_section_ptr, 0,
4905 NULL, FALSE, FALSE, &bh))
4908 fdh = (struct ppc_link_hash_entry *) bh;
4909 fdh->elf.non_elf = 0;
4911 fdh->is_func_descriptor = 1;
4918 /* Fix function descriptor symbols defined in .opd sections to be
4922 ppc64_elf_add_symbol_hook (bfd *ibfd,
4923 struct bfd_link_info *info,
4924 Elf_Internal_Sym *isym,
4926 flagword *flags ATTRIBUTE_UNUSED,
4930 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4931 && (ibfd->flags & DYNAMIC) == 0
4932 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4933 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4936 && strcmp ((*sec)->name, ".opd") == 0)
4940 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4941 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4942 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4944 /* If the symbol is a function defined in .opd, and the function
4945 code is in a discarded group, let it appear to be undefined. */
4946 if (!bfd_link_relocatable (info)
4947 && (*sec)->reloc_count != 0
4948 && opd_entry_value (*sec, *value, &code_sec, NULL,
4949 FALSE) != (bfd_vma) -1
4950 && discarded_section (code_sec))
4952 *sec = bfd_und_section_ptr;
4953 isym->st_shndx = SHN_UNDEF;
4956 else if (*sec != NULL
4957 && strcmp ((*sec)->name, ".toc") == 0
4958 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4960 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4962 htab->params->object_in_toc = 1;
4965 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4967 if (abiversion (ibfd) == 0)
4968 set_abiversion (ibfd, 2);
4969 else if (abiversion (ibfd) == 1)
4971 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4972 " for ABI version 1\n"), name);
4973 bfd_set_error (bfd_error_bad_value);
4981 /* Merge non-visibility st_other attributes: local entry point. */
4984 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4985 const Elf_Internal_Sym *isym,
4986 bfd_boolean definition,
4987 bfd_boolean dynamic)
4989 if (definition && (!dynamic || !h->def_regular))
4990 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4991 | ELF_ST_VISIBILITY (h->other));
4994 /* Hook called on merging a symbol. We use this to clear "fake" since
4995 we now have a real symbol. */
4998 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
4999 const Elf_Internal_Sym *isym,
5000 asection **psec ATTRIBUTE_UNUSED,
5001 bfd_boolean newdef ATTRIBUTE_UNUSED,
5002 bfd_boolean olddef ATTRIBUTE_UNUSED,
5003 bfd *oldbfd ATTRIBUTE_UNUSED,
5004 const asection *oldsec ATTRIBUTE_UNUSED)
5006 ((struct ppc_link_hash_entry *) h)->fake = 0;
5007 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5008 ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1;
5012 /* This function makes an old ABI object reference to ".bar" cause the
5013 inclusion of a new ABI object archive that defines "bar".
5014 NAME is a symbol defined in an archive. Return a symbol in the hash
5015 table that might be satisfied by the archive symbols. */
5017 static struct elf_link_hash_entry *
5018 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5019 struct bfd_link_info *info,
5022 struct elf_link_hash_entry *h;
5026 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5028 /* Don't return this sym if it is a fake function descriptor
5029 created by add_symbol_adjust. */
5030 && !((struct ppc_link_hash_entry *) h)->fake)
5036 len = strlen (name);
5037 dot_name = bfd_alloc (abfd, len + 2);
5038 if (dot_name == NULL)
5039 return (struct elf_link_hash_entry *) 0 - 1;
5041 memcpy (dot_name + 1, name, len + 1);
5042 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5043 bfd_release (abfd, dot_name);
5047 /* This function satisfies all old ABI object references to ".bar" if a
5048 new ABI object defines "bar". Well, at least, undefined dot symbols
5049 are made weak. This stops later archive searches from including an
5050 object if we already have a function descriptor definition. It also
5051 prevents the linker complaining about undefined symbols.
5052 We also check and correct mismatched symbol visibility here. The
5053 most restrictive visibility of the function descriptor and the
5054 function entry symbol is used. */
5057 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5059 struct ppc_link_hash_table *htab;
5060 struct ppc_link_hash_entry *fdh;
5062 if (eh->elf.root.type == bfd_link_hash_warning)
5063 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5065 if (eh->elf.root.type == bfd_link_hash_indirect)
5068 if (eh->elf.root.root.string[0] != '.')
5071 htab = ppc_hash_table (info);
5075 fdh = lookup_fdh (eh, htab);
5077 && !bfd_link_relocatable (info)
5078 && (eh->elf.root.type == bfd_link_hash_undefined
5079 || eh->elf.root.type == bfd_link_hash_undefweak)
5080 && eh->elf.ref_regular)
5082 /* Make an undefined function descriptor sym, in order to
5083 pull in an --as-needed shared lib. Archives are handled
5085 fdh = make_fdh (info, eh);
5092 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5093 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5095 /* Make both descriptor and entry symbol have the most
5096 constraining visibility of either symbol. */
5097 if (entry_vis < descr_vis)
5098 fdh->elf.other += entry_vis - descr_vis;
5099 else if (entry_vis > descr_vis)
5100 eh->elf.other += descr_vis - entry_vis;
5102 /* Propagate reference flags from entry symbol to function
5103 descriptor symbol. */
5104 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5105 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5106 fdh->elf.ref_regular |= eh->elf.ref_regular;
5107 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5109 if (!fdh->elf.forced_local
5110 && fdh->elf.dynindx == -1
5111 && fdh->elf.versioned != versioned_hidden
5112 && (bfd_link_dll (info)
5113 || fdh->elf.def_dynamic
5114 || fdh->elf.ref_dynamic)
5115 && (eh->elf.ref_regular
5116 || eh->elf.def_regular))
5118 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5126 /* Set up opd section info and abiversion for IBFD, and process list
5127 of dot-symbols we made in link_hash_newfunc. */
5130 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5132 struct ppc_link_hash_table *htab;
5133 struct ppc_link_hash_entry **p, *eh;
5134 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5136 if (opd != NULL && opd->size != 0)
5138 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5139 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5141 if (abiversion (ibfd) == 0)
5142 set_abiversion (ibfd, 1);
5143 else if (abiversion (ibfd) >= 2)
5145 /* xgettext:c-format */
5146 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5148 ibfd, abiversion (ibfd));
5149 bfd_set_error (bfd_error_bad_value);
5154 if (is_ppc64_elf (info->output_bfd))
5156 /* For input files without an explicit abiversion in e_flags
5157 we should have flagged any with symbol st_other bits set
5158 as ELFv1 and above flagged those with .opd as ELFv2.
5159 Set the output abiversion if not yet set, and for any input
5160 still ambiguous, take its abiversion from the output.
5161 Differences in ABI are reported later. */
5162 if (abiversion (info->output_bfd) == 0)
5163 set_abiversion (info->output_bfd, abiversion (ibfd));
5164 else if (abiversion (ibfd) == 0)
5165 set_abiversion (ibfd, abiversion (info->output_bfd));
5168 htab = ppc_hash_table (info);
5172 if (opd != NULL && opd->size != 0
5173 && (ibfd->flags & DYNAMIC) == 0
5174 && (opd->flags & SEC_RELOC) != 0
5175 && opd->reloc_count != 0
5176 && !bfd_is_abs_section (opd->output_section)
5177 && info->gc_sections)
5179 /* Garbage collection needs some extra help with .opd sections.
5180 We don't want to necessarily keep everything referenced by
5181 relocs in .opd, as that would keep all functions. Instead,
5182 if we reference an .opd symbol (a function descriptor), we
5183 want to keep the function code symbol's section. This is
5184 easy for global symbols, but for local syms we need to keep
5185 information about the associated function section. */
5187 asection **opd_sym_map;
5188 Elf_Internal_Shdr *symtab_hdr;
5189 Elf_Internal_Rela *relocs, *rel_end, *rel;
5191 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5192 opd_sym_map = bfd_zalloc (ibfd, amt);
5193 if (opd_sym_map == NULL)
5195 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5196 relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL,
5200 symtab_hdr = &elf_symtab_hdr (ibfd);
5201 rel_end = relocs + opd->reloc_count - 1;
5202 for (rel = relocs; rel < rel_end; rel++)
5204 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
5205 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
5207 if (r_type == R_PPC64_ADDR64
5208 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC
5209 && r_symndx < symtab_hdr->sh_info)
5211 Elf_Internal_Sym *isym;
5214 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx);
5217 if (elf_section_data (opd)->relocs != relocs)
5222 s = bfd_section_from_elf_index (ibfd, isym->st_shndx);
5223 if (s != NULL && s != opd)
5224 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5227 if (elf_section_data (opd)->relocs != relocs)
5231 p = &htab->dot_syms;
5232 while ((eh = *p) != NULL)
5235 if (&eh->elf == htab->elf.hgot)
5237 else if (htab->elf.hgot == NULL
5238 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5239 htab->elf.hgot = &eh->elf;
5240 else if (abiversion (ibfd) <= 1)
5242 htab->need_func_desc_adj = 1;
5243 if (!add_symbol_adjust (eh, info))
5246 p = &eh->u.next_dot_sym;
5251 /* Undo hash table changes when an --as-needed input file is determined
5252 not to be needed. */
5255 ppc64_elf_notice_as_needed (bfd *ibfd,
5256 struct bfd_link_info *info,
5257 enum notice_asneeded_action act)
5259 if (act == notice_not_needed)
5261 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5266 htab->dot_syms = NULL;
5268 return _bfd_elf_notice_as_needed (ibfd, info, act);
5271 /* If --just-symbols against a final linked binary, then assume we need
5272 toc adjusting stubs when calling functions defined there. */
5275 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5277 if ((sec->flags & SEC_CODE) != 0
5278 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5279 && is_ppc64_elf (sec->owner))
5281 if (abiversion (sec->owner) >= 2
5282 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5283 sec->has_toc_reloc = 1;
5285 _bfd_elf_link_just_syms (sec, info);
5288 static struct plt_entry **
5289 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5290 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5292 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5293 struct plt_entry **local_plt;
5294 unsigned char *local_got_tls_masks;
5296 if (local_got_ents == NULL)
5298 bfd_size_type size = symtab_hdr->sh_info;
5300 size *= (sizeof (*local_got_ents)
5301 + sizeof (*local_plt)
5302 + sizeof (*local_got_tls_masks));
5303 local_got_ents = bfd_zalloc (abfd, size);
5304 if (local_got_ents == NULL)
5306 elf_local_got_ents (abfd) = local_got_ents;
5309 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5311 struct got_entry *ent;
5313 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5314 if (ent->addend == r_addend
5315 && ent->owner == abfd
5316 && ent->tls_type == tls_type)
5320 bfd_size_type amt = sizeof (*ent);
5321 ent = bfd_alloc (abfd, amt);
5324 ent->next = local_got_ents[r_symndx];
5325 ent->addend = r_addend;
5327 ent->tls_type = tls_type;
5328 ent->is_indirect = FALSE;
5329 ent->got.refcount = 0;
5330 local_got_ents[r_symndx] = ent;
5332 ent->got.refcount += 1;
5335 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5336 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5337 local_got_tls_masks[r_symndx] |= tls_type;
5339 return local_plt + r_symndx;
5343 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5345 struct plt_entry *ent;
5347 for (ent = *plist; ent != NULL; ent = ent->next)
5348 if (ent->addend == addend)
5352 bfd_size_type amt = sizeof (*ent);
5353 ent = bfd_alloc (abfd, amt);
5357 ent->addend = addend;
5358 ent->plt.refcount = 0;
5361 ent->plt.refcount += 1;
5366 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5368 return (r_type == R_PPC64_REL24
5369 || r_type == R_PPC64_REL14
5370 || r_type == R_PPC64_REL14_BRTAKEN
5371 || r_type == R_PPC64_REL14_BRNTAKEN
5372 || r_type == R_PPC64_ADDR24
5373 || r_type == R_PPC64_ADDR14
5374 || r_type == R_PPC64_ADDR14_BRTAKEN
5375 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5378 /* Look through the relocs for a section during the first phase, and
5379 calculate needed space in the global offset table, procedure
5380 linkage table, and dynamic reloc sections. */
5383 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5384 asection *sec, const Elf_Internal_Rela *relocs)
5386 struct ppc_link_hash_table *htab;
5387 Elf_Internal_Shdr *symtab_hdr;
5388 struct elf_link_hash_entry **sym_hashes;
5389 const Elf_Internal_Rela *rel;
5390 const Elf_Internal_Rela *rel_end;
5392 struct elf_link_hash_entry *tga, *dottga;
5395 if (bfd_link_relocatable (info))
5398 /* Don't do anything special with non-loaded, non-alloced sections.
5399 In particular, any relocs in such sections should not affect GOT
5400 and PLT reference counting (ie. we don't allow them to create GOT
5401 or PLT entries), there's no possibility or desire to optimize TLS
5402 relocs, and there's not much point in propagating relocs to shared
5403 libs that the dynamic linker won't relocate. */
5404 if ((sec->flags & SEC_ALLOC) == 0)
5407 BFD_ASSERT (is_ppc64_elf (abfd));
5409 htab = ppc_hash_table (info);
5413 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5414 FALSE, FALSE, TRUE);
5415 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5416 FALSE, FALSE, TRUE);
5417 symtab_hdr = &elf_symtab_hdr (abfd);
5418 sym_hashes = elf_sym_hashes (abfd);
5420 is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd;
5421 rel_end = relocs + sec->reloc_count;
5422 for (rel = relocs; rel < rel_end; rel++)
5424 unsigned long r_symndx;
5425 struct elf_link_hash_entry *h;
5426 enum elf_ppc64_reloc_type r_type;
5428 struct _ppc64_elf_section_data *ppc64_sec;
5429 struct plt_entry **ifunc, **plt_list;
5431 r_symndx = ELF64_R_SYM (rel->r_info);
5432 if (r_symndx < symtab_hdr->sh_info)
5436 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5437 h = elf_follow_link (h);
5439 if (h == htab->elf.hgot)
5440 sec->has_toc_reloc = 1;
5447 if (h->type == STT_GNU_IFUNC)
5450 ifunc = &h->plt.plist;
5455 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5460 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5462 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5463 rel->r_addend, PLT_IFUNC);
5469 r_type = ELF64_R_TYPE (rel->r_info);
5474 /* These special tls relocs tie a call to __tls_get_addr with
5475 its parameter symbol. */
5478 case R_PPC64_GOT_TLSLD16:
5479 case R_PPC64_GOT_TLSLD16_LO:
5480 case R_PPC64_GOT_TLSLD16_HI:
5481 case R_PPC64_GOT_TLSLD16_HA:
5482 tls_type = TLS_TLS | TLS_LD;
5485 case R_PPC64_GOT_TLSGD16:
5486 case R_PPC64_GOT_TLSGD16_LO:
5487 case R_PPC64_GOT_TLSGD16_HI:
5488 case R_PPC64_GOT_TLSGD16_HA:
5489 tls_type = TLS_TLS | TLS_GD;
5492 case R_PPC64_GOT_TPREL16_DS:
5493 case R_PPC64_GOT_TPREL16_LO_DS:
5494 case R_PPC64_GOT_TPREL16_HI:
5495 case R_PPC64_GOT_TPREL16_HA:
5496 if (bfd_link_dll (info))
5497 info->flags |= DF_STATIC_TLS;
5498 tls_type = TLS_TLS | TLS_TPREL;
5501 case R_PPC64_GOT_DTPREL16_DS:
5502 case R_PPC64_GOT_DTPREL16_LO_DS:
5503 case R_PPC64_GOT_DTPREL16_HI:
5504 case R_PPC64_GOT_DTPREL16_HA:
5505 tls_type = TLS_TLS | TLS_DTPREL;
5507 sec->has_tls_reloc = 1;
5511 case R_PPC64_GOT16_DS:
5512 case R_PPC64_GOT16_HA:
5513 case R_PPC64_GOT16_HI:
5514 case R_PPC64_GOT16_LO:
5515 case R_PPC64_GOT16_LO_DS:
5516 /* This symbol requires a global offset table entry. */
5517 sec->has_toc_reloc = 1;
5518 if (r_type == R_PPC64_GOT_TLSLD16
5519 || r_type == R_PPC64_GOT_TLSGD16
5520 || r_type == R_PPC64_GOT_TPREL16_DS
5521 || r_type == R_PPC64_GOT_DTPREL16_DS
5522 || r_type == R_PPC64_GOT16
5523 || r_type == R_PPC64_GOT16_DS)
5525 htab->do_multi_toc = 1;
5526 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5529 if (ppc64_elf_tdata (abfd)->got == NULL
5530 && !create_got_section (abfd, info))
5535 struct ppc_link_hash_entry *eh;
5536 struct got_entry *ent;
5538 eh = (struct ppc_link_hash_entry *) h;
5539 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5540 if (ent->addend == rel->r_addend
5541 && ent->owner == abfd
5542 && ent->tls_type == tls_type)
5546 bfd_size_type amt = sizeof (*ent);
5547 ent = bfd_alloc (abfd, amt);
5550 ent->next = eh->elf.got.glist;
5551 ent->addend = rel->r_addend;
5553 ent->tls_type = tls_type;
5554 ent->is_indirect = FALSE;
5555 ent->got.refcount = 0;
5556 eh->elf.got.glist = ent;
5558 ent->got.refcount += 1;
5559 eh->tls_mask |= tls_type;
5562 /* This is a global offset table entry for a local symbol. */
5563 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5564 rel->r_addend, tls_type))
5567 /* We may also need a plt entry if the symbol turns out to be
5569 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5571 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5576 case R_PPC64_PLT16_HA:
5577 case R_PPC64_PLT16_HI:
5578 case R_PPC64_PLT16_LO:
5581 /* This symbol requires a procedure linkage table entry. */
5586 if (h->root.root.string[0] == '.'
5587 && h->root.root.string[1] != '\0')
5588 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5589 plt_list = &h->plt.plist;
5591 if (plt_list == NULL)
5593 /* It does not make sense to have a procedure linkage
5594 table entry for a non-ifunc local symbol. */
5595 info->callbacks->einfo
5596 /* xgettext:c-format */
5597 (_("%H: %s reloc against local symbol\n"),
5598 abfd, sec, rel->r_offset,
5599 ppc64_elf_howto_table[r_type]->name);
5600 bfd_set_error (bfd_error_bad_value);
5603 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5607 /* The following relocations don't need to propagate the
5608 relocation if linking a shared object since they are
5609 section relative. */
5610 case R_PPC64_SECTOFF:
5611 case R_PPC64_SECTOFF_LO:
5612 case R_PPC64_SECTOFF_HI:
5613 case R_PPC64_SECTOFF_HA:
5614 case R_PPC64_SECTOFF_DS:
5615 case R_PPC64_SECTOFF_LO_DS:
5616 case R_PPC64_DTPREL16:
5617 case R_PPC64_DTPREL16_LO:
5618 case R_PPC64_DTPREL16_HI:
5619 case R_PPC64_DTPREL16_HA:
5620 case R_PPC64_DTPREL16_DS:
5621 case R_PPC64_DTPREL16_LO_DS:
5622 case R_PPC64_DTPREL16_HIGH:
5623 case R_PPC64_DTPREL16_HIGHA:
5624 case R_PPC64_DTPREL16_HIGHER:
5625 case R_PPC64_DTPREL16_HIGHERA:
5626 case R_PPC64_DTPREL16_HIGHEST:
5627 case R_PPC64_DTPREL16_HIGHESTA:
5632 case R_PPC64_REL16_LO:
5633 case R_PPC64_REL16_HI:
5634 case R_PPC64_REL16_HA:
5635 case R_PPC64_REL16DX_HA:
5638 /* Not supported as a dynamic relocation. */
5639 case R_PPC64_ADDR64_LOCAL:
5640 if (bfd_link_pic (info))
5642 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5644 /* xgettext:c-format */
5645 info->callbacks->einfo (_("%H: %s reloc unsupported "
5646 "in shared libraries and PIEs.\n"),
5647 abfd, sec, rel->r_offset,
5648 ppc64_elf_howto_table[r_type]->name);
5649 bfd_set_error (bfd_error_bad_value);
5655 case R_PPC64_TOC16_DS:
5656 htab->do_multi_toc = 1;
5657 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5659 case R_PPC64_TOC16_LO:
5660 case R_PPC64_TOC16_HI:
5661 case R_PPC64_TOC16_HA:
5662 case R_PPC64_TOC16_LO_DS:
5663 sec->has_toc_reloc = 1;
5670 /* This relocation describes the C++ object vtable hierarchy.
5671 Reconstruct it for later use during GC. */
5672 case R_PPC64_GNU_VTINHERIT:
5673 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5677 /* This relocation describes which C++ vtable entries are actually
5678 used. Record for later use during GC. */
5679 case R_PPC64_GNU_VTENTRY:
5680 BFD_ASSERT (h != NULL);
5682 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5687 case R_PPC64_REL14_BRTAKEN:
5688 case R_PPC64_REL14_BRNTAKEN:
5690 asection *dest = NULL;
5692 /* Heuristic: If jumping outside our section, chances are
5693 we are going to need a stub. */
5696 /* If the sym is weak it may be overridden later, so
5697 don't assume we know where a weak sym lives. */
5698 if (h->root.type == bfd_link_hash_defined)
5699 dest = h->root.u.def.section;
5703 Elf_Internal_Sym *isym;
5705 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5710 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5714 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5723 if (h->root.root.string[0] == '.'
5724 && h->root.root.string[1] != '\0')
5725 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5727 if (h == tga || h == dottga)
5729 sec->has_tls_reloc = 1;
5731 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5732 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5733 /* We have a new-style __tls_get_addr call with
5737 /* Mark this section as having an old-style call. */
5738 sec->has_tls_get_addr_call = 1;
5740 plt_list = &h->plt.plist;
5743 /* We may need a .plt entry if the function this reloc
5744 refers to is in a shared lib. */
5746 && !update_plt_info (abfd, plt_list, rel->r_addend))
5750 case R_PPC64_ADDR14:
5751 case R_PPC64_ADDR14_BRNTAKEN:
5752 case R_PPC64_ADDR14_BRTAKEN:
5753 case R_PPC64_ADDR24:
5756 case R_PPC64_TPREL64:
5757 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5758 if (bfd_link_dll (info))
5759 info->flags |= DF_STATIC_TLS;
5762 case R_PPC64_DTPMOD64:
5763 if (rel + 1 < rel_end
5764 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5765 && rel[1].r_offset == rel->r_offset + 8)
5766 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5768 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5771 case R_PPC64_DTPREL64:
5772 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5774 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5775 && rel[-1].r_offset == rel->r_offset - 8)
5776 /* This is the second reloc of a dtpmod, dtprel pair.
5777 Don't mark with TLS_DTPREL. */
5781 sec->has_tls_reloc = 1;
5784 struct ppc_link_hash_entry *eh;
5785 eh = (struct ppc_link_hash_entry *) h;
5786 eh->tls_mask |= tls_type;
5789 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5790 rel->r_addend, tls_type))
5793 ppc64_sec = ppc64_elf_section_data (sec);
5794 if (ppc64_sec->sec_type != sec_toc)
5798 /* One extra to simplify get_tls_mask. */
5799 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5800 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5801 if (ppc64_sec->u.toc.symndx == NULL)
5803 amt = sec->size * sizeof (bfd_vma) / 8;
5804 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5805 if (ppc64_sec->u.toc.add == NULL)
5807 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5808 ppc64_sec->sec_type = sec_toc;
5810 BFD_ASSERT (rel->r_offset % 8 == 0);
5811 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5812 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5814 /* Mark the second slot of a GD or LD entry.
5815 -1 to indicate GD and -2 to indicate LD. */
5816 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5817 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5818 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5819 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5822 case R_PPC64_TPREL16:
5823 case R_PPC64_TPREL16_LO:
5824 case R_PPC64_TPREL16_HI:
5825 case R_PPC64_TPREL16_HA:
5826 case R_PPC64_TPREL16_DS:
5827 case R_PPC64_TPREL16_LO_DS:
5828 case R_PPC64_TPREL16_HIGH:
5829 case R_PPC64_TPREL16_HIGHA:
5830 case R_PPC64_TPREL16_HIGHER:
5831 case R_PPC64_TPREL16_HIGHERA:
5832 case R_PPC64_TPREL16_HIGHEST:
5833 case R_PPC64_TPREL16_HIGHESTA:
5834 if (bfd_link_dll (info))
5835 info->flags |= DF_STATIC_TLS;
5838 case R_PPC64_ADDR64:
5840 && rel + 1 < rel_end
5841 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5844 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5848 case R_PPC64_ADDR16:
5849 case R_PPC64_ADDR16_DS:
5850 case R_PPC64_ADDR16_HA:
5851 case R_PPC64_ADDR16_HI:
5852 case R_PPC64_ADDR16_HIGH:
5853 case R_PPC64_ADDR16_HIGHA:
5854 case R_PPC64_ADDR16_HIGHER:
5855 case R_PPC64_ADDR16_HIGHERA:
5856 case R_PPC64_ADDR16_HIGHEST:
5857 case R_PPC64_ADDR16_HIGHESTA:
5858 case R_PPC64_ADDR16_LO:
5859 case R_PPC64_ADDR16_LO_DS:
5860 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5861 && rel->r_addend == 0)
5863 /* We may need a .plt entry if this reloc refers to a
5864 function in a shared lib. */
5865 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5867 h->pointer_equality_needed = 1;
5874 case R_PPC64_ADDR32:
5875 case R_PPC64_UADDR16:
5876 case R_PPC64_UADDR32:
5877 case R_PPC64_UADDR64:
5879 if (h != NULL && !bfd_link_pic (info))
5880 /* We may need a copy reloc. */
5883 /* Don't propagate .opd relocs. */
5884 if (NO_OPD_RELOCS && is_opd)
5887 /* If we are creating a shared library, and this is a reloc
5888 against a global symbol, or a non PC relative reloc
5889 against a local symbol, then we need to copy the reloc
5890 into the shared library. However, if we are linking with
5891 -Bsymbolic, we do not need to copy a reloc against a
5892 global symbol which is defined in an object we are
5893 including in the link (i.e., DEF_REGULAR is set). At
5894 this point we have not seen all the input files, so it is
5895 possible that DEF_REGULAR is not set now but will be set
5896 later (it is never cleared). In case of a weak definition,
5897 DEF_REGULAR may be cleared later by a strong definition in
5898 a shared library. We account for that possibility below by
5899 storing information in the dyn_relocs field of the hash
5900 table entry. A similar situation occurs when creating
5901 shared libraries and symbol visibility changes render the
5904 If on the other hand, we are creating an executable, we
5905 may need to keep relocations for symbols satisfied by a
5906 dynamic library if we manage to avoid copy relocs for the
5909 if ((bfd_link_pic (info)
5910 && (must_be_dyn_reloc (info, r_type)
5912 && (!SYMBOLIC_BIND (info, h)
5913 || h->root.type == bfd_link_hash_defweak
5914 || !h->def_regular))))
5915 || (ELIMINATE_COPY_RELOCS
5916 && !bfd_link_pic (info)
5918 && (h->root.type == bfd_link_hash_defweak
5919 || !h->def_regular))
5920 || (!bfd_link_pic (info)
5923 /* We must copy these reloc types into the output file.
5924 Create a reloc section in dynobj and make room for
5928 sreloc = _bfd_elf_make_dynamic_reloc_section
5929 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5935 /* If this is a global symbol, we count the number of
5936 relocations we need for this symbol. */
5939 struct elf_dyn_relocs *p;
5940 struct elf_dyn_relocs **head;
5942 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5944 if (p == NULL || p->sec != sec)
5946 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5956 if (!must_be_dyn_reloc (info, r_type))
5961 /* Track dynamic relocs needed for local syms too.
5962 We really need local syms available to do this
5964 struct ppc_dyn_relocs *p;
5965 struct ppc_dyn_relocs **head;
5966 bfd_boolean is_ifunc;
5969 Elf_Internal_Sym *isym;
5971 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5976 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5980 vpp = &elf_section_data (s)->local_dynrel;
5981 head = (struct ppc_dyn_relocs **) vpp;
5982 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5984 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5986 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5988 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5994 p->ifunc = is_ifunc;
6010 /* Merge backend specific data from an object file to the output
6011 object file when linking. */
6014 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6016 bfd *obfd = info->output_bfd;
6017 unsigned long iflags, oflags;
6019 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6022 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6025 if (!_bfd_generic_verify_endian_match (ibfd, info))
6028 iflags = elf_elfheader (ibfd)->e_flags;
6029 oflags = elf_elfheader (obfd)->e_flags;
6031 if (iflags & ~EF_PPC64_ABI)
6034 /* xgettext:c-format */
6035 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6036 bfd_set_error (bfd_error_bad_value);
6039 else if (iflags != oflags && iflags != 0)
6042 /* xgettext:c-format */
6043 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6044 ibfd, iflags, oflags);
6045 bfd_set_error (bfd_error_bad_value);
6049 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6051 /* Merge Tag_compatibility attributes and any common GNU ones. */
6052 _bfd_elf_merge_object_attributes (ibfd, info);
6058 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6060 /* Print normal ELF private data. */
6061 _bfd_elf_print_private_bfd_data (abfd, ptr);
6063 if (elf_elfheader (abfd)->e_flags != 0)
6067 fprintf (file, _("private flags = 0x%lx:"),
6068 elf_elfheader (abfd)->e_flags);
6070 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6071 fprintf (file, _(" [abiv%ld]"),
6072 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6079 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6080 of the code entry point, and its section, which must be in the same
6081 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6084 opd_entry_value (asection *opd_sec,
6086 asection **code_sec,
6088 bfd_boolean in_code_sec)
6090 bfd *opd_bfd = opd_sec->owner;
6091 Elf_Internal_Rela *relocs;
6092 Elf_Internal_Rela *lo, *hi, *look;
6095 /* No relocs implies we are linking a --just-symbols object, or looking
6096 at a final linked executable with addr2line or somesuch. */
6097 if (opd_sec->reloc_count == 0)
6099 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6101 if (contents == NULL)
6103 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6104 return (bfd_vma) -1;
6105 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6108 /* PR 17512: file: 64b9dfbb. */
6109 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6110 return (bfd_vma) -1;
6112 val = bfd_get_64 (opd_bfd, contents + offset);
6113 if (code_sec != NULL)
6115 asection *sec, *likely = NULL;
6121 && val < sec->vma + sec->size)
6127 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6129 && (sec->flags & SEC_LOAD) != 0
6130 && (sec->flags & SEC_ALLOC) != 0)
6135 if (code_off != NULL)
6136 *code_off = val - likely->vma;
6142 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6144 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6146 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6147 /* PR 17512: file: df8e1fd6. */
6149 return (bfd_vma) -1;
6151 /* Go find the opd reloc at the sym address. */
6153 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6157 look = lo + (hi - lo) / 2;
6158 if (look->r_offset < offset)
6160 else if (look->r_offset > offset)
6164 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6166 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6167 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6169 unsigned long symndx = ELF64_R_SYM (look->r_info);
6170 asection *sec = NULL;
6172 if (symndx >= symtab_hdr->sh_info
6173 && elf_sym_hashes (opd_bfd) != NULL)
6175 struct elf_link_hash_entry **sym_hashes;
6176 struct elf_link_hash_entry *rh;
6178 sym_hashes = elf_sym_hashes (opd_bfd);
6179 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6182 rh = elf_follow_link (rh);
6183 if (rh->root.type != bfd_link_hash_defined
6184 && rh->root.type != bfd_link_hash_defweak)
6186 if (rh->root.u.def.section->owner == opd_bfd)
6188 val = rh->root.u.def.value;
6189 sec = rh->root.u.def.section;
6196 Elf_Internal_Sym *sym;
6198 if (symndx < symtab_hdr->sh_info)
6200 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6203 size_t symcnt = symtab_hdr->sh_info;
6204 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6209 symtab_hdr->contents = (bfd_byte *) sym;
6215 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6221 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6224 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6225 val = sym->st_value;
6228 val += look->r_addend;
6229 if (code_off != NULL)
6231 if (code_sec != NULL)
6233 if (in_code_sec && *code_sec != sec)
6238 if (sec->output_section != NULL)
6239 val += sec->output_section->vma + sec->output_offset;
6248 /* If the ELF symbol SYM might be a function in SEC, return the
6249 function size and set *CODE_OFF to the function's entry point,
6250 otherwise return zero. */
6252 static bfd_size_type
6253 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6258 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6259 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6263 if (!(sym->flags & BSF_SYNTHETIC))
6264 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6266 if (strcmp (sym->section->name, ".opd") == 0)
6268 struct _opd_sec_data *opd = get_opd_info (sym->section);
6269 bfd_vma symval = sym->value;
6272 && opd->adjust != NULL
6273 && elf_section_data (sym->section)->relocs != NULL)
6275 /* opd_entry_value will use cached relocs that have been
6276 adjusted, but with raw symbols. That means both local
6277 and global symbols need adjusting. */
6278 long adjust = opd->adjust[OPD_NDX (symval)];
6284 if (opd_entry_value (sym->section, symval,
6285 &sec, code_off, TRUE) == (bfd_vma) -1)
6287 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6288 symbol. This size has nothing to do with the code size of the
6289 function, which is what we're supposed to return, but the
6290 code size isn't available without looking up the dot-sym.
6291 However, doing that would be a waste of time particularly
6292 since elf_find_function will look at the dot-sym anyway.
6293 Now, elf_find_function will keep the largest size of any
6294 function sym found at the code address of interest, so return
6295 1 here to avoid it incorrectly caching a larger function size
6296 for a small function. This does mean we return the wrong
6297 size for a new-ABI function of size 24, but all that does is
6298 disable caching for such functions. */
6304 if (sym->section != sec)
6306 *code_off = sym->value;
6313 /* Return true if symbol is a strong function defined in an ELFv2
6314 object with st_other localentry bits of zero, ie. its local entry
6315 point coincides with its global entry point. */
6318 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6321 && h->type == STT_FUNC
6322 && h->root.type == bfd_link_hash_defined
6323 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6324 && !((struct ppc_link_hash_entry *) h)->non_zero_localentry
6325 && is_ppc64_elf (h->root.u.def.section->owner)
6326 && abiversion (h->root.u.def.section->owner) >= 2);
6329 /* Return true if symbol is defined in a regular object file. */
6332 is_static_defined (struct elf_link_hash_entry *h)
6334 return ((h->root.type == bfd_link_hash_defined
6335 || h->root.type == bfd_link_hash_defweak)
6336 && h->root.u.def.section != NULL
6337 && h->root.u.def.section->output_section != NULL);
6340 /* If FDH is a function descriptor symbol, return the associated code
6341 entry symbol if it is defined. Return NULL otherwise. */
6343 static struct ppc_link_hash_entry *
6344 defined_code_entry (struct ppc_link_hash_entry *fdh)
6346 if (fdh->is_func_descriptor)
6348 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6349 if (fh->elf.root.type == bfd_link_hash_defined
6350 || fh->elf.root.type == bfd_link_hash_defweak)
6356 /* If FH is a function code entry symbol, return the associated
6357 function descriptor symbol if it is defined. Return NULL otherwise. */
6359 static struct ppc_link_hash_entry *
6360 defined_func_desc (struct ppc_link_hash_entry *fh)
6363 && fh->oh->is_func_descriptor)
6365 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6366 if (fdh->elf.root.type == bfd_link_hash_defined
6367 || fdh->elf.root.type == bfd_link_hash_defweak)
6373 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6375 /* Garbage collect sections, after first dealing with dot-symbols. */
6378 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6380 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6382 if (htab != NULL && htab->need_func_desc_adj)
6384 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6385 htab->need_func_desc_adj = 0;
6387 return bfd_elf_gc_sections (abfd, info);
6390 /* Mark all our entry sym sections, both opd and code section. */
6393 ppc64_elf_gc_keep (struct bfd_link_info *info)
6395 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6396 struct bfd_sym_chain *sym;
6401 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6403 struct ppc_link_hash_entry *eh, *fh;
6406 eh = (struct ppc_link_hash_entry *)
6407 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6410 if (eh->elf.root.type != bfd_link_hash_defined
6411 && eh->elf.root.type != bfd_link_hash_defweak)
6414 fh = defined_code_entry (eh);
6417 sec = fh->elf.root.u.def.section;
6418 sec->flags |= SEC_KEEP;
6420 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6421 && opd_entry_value (eh->elf.root.u.def.section,
6422 eh->elf.root.u.def.value,
6423 &sec, NULL, FALSE) != (bfd_vma) -1)
6424 sec->flags |= SEC_KEEP;
6426 sec = eh->elf.root.u.def.section;
6427 sec->flags |= SEC_KEEP;
6431 /* Mark sections containing dynamically referenced symbols. When
6432 building shared libraries, we must assume that any visible symbol is
6436 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6438 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6439 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6440 struct ppc_link_hash_entry *fdh;
6441 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6443 /* Dynamic linking info is on the func descriptor sym. */
6444 fdh = defined_func_desc (eh);
6448 if ((eh->elf.root.type == bfd_link_hash_defined
6449 || eh->elf.root.type == bfd_link_hash_defweak)
6450 && (eh->elf.ref_dynamic
6451 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6452 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6453 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6454 && (!bfd_link_executable (info)
6455 || info->gc_keep_exported
6456 || info->export_dynamic
6459 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6460 && (eh->elf.versioned >= versioned
6461 || !bfd_hide_sym_by_version (info->version_info,
6462 eh->elf.root.root.string)))))
6465 struct ppc_link_hash_entry *fh;
6467 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6469 /* Function descriptor syms cause the associated
6470 function code sym section to be marked. */
6471 fh = defined_code_entry (eh);
6474 code_sec = fh->elf.root.u.def.section;
6475 code_sec->flags |= SEC_KEEP;
6477 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6478 && opd_entry_value (eh->elf.root.u.def.section,
6479 eh->elf.root.u.def.value,
6480 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6481 code_sec->flags |= SEC_KEEP;
6487 /* Return the section that should be marked against GC for a given
6491 ppc64_elf_gc_mark_hook (asection *sec,
6492 struct bfd_link_info *info,
6493 Elf_Internal_Rela *rel,
6494 struct elf_link_hash_entry *h,
6495 Elf_Internal_Sym *sym)
6499 /* Syms return NULL if we're marking .opd, so we avoid marking all
6500 function sections, as all functions are referenced in .opd. */
6502 if (get_opd_info (sec) != NULL)
6507 enum elf_ppc64_reloc_type r_type;
6508 struct ppc_link_hash_entry *eh, *fh, *fdh;
6510 r_type = ELF64_R_TYPE (rel->r_info);
6513 case R_PPC64_GNU_VTINHERIT:
6514 case R_PPC64_GNU_VTENTRY:
6518 switch (h->root.type)
6520 case bfd_link_hash_defined:
6521 case bfd_link_hash_defweak:
6522 eh = (struct ppc_link_hash_entry *) h;
6523 fdh = defined_func_desc (eh);
6526 /* -mcall-aixdesc code references the dot-symbol on
6527 a call reloc. Mark the function descriptor too
6528 against garbage collection. */
6530 if (fdh->elf.is_weakalias)
6531 weakdef (&fdh->elf)->mark = 1;
6535 /* Function descriptor syms cause the associated
6536 function code sym section to be marked. */
6537 fh = defined_code_entry (eh);
6540 /* They also mark their opd section. */
6541 eh->elf.root.u.def.section->gc_mark = 1;
6543 rsec = fh->elf.root.u.def.section;
6545 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6546 && opd_entry_value (eh->elf.root.u.def.section,
6547 eh->elf.root.u.def.value,
6548 &rsec, NULL, FALSE) != (bfd_vma) -1)
6549 eh->elf.root.u.def.section->gc_mark = 1;
6551 rsec = h->root.u.def.section;
6554 case bfd_link_hash_common:
6555 rsec = h->root.u.c.p->section;
6559 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6565 struct _opd_sec_data *opd;
6567 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6568 opd = get_opd_info (rsec);
6569 if (opd != NULL && opd->func_sec != NULL)
6573 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6580 /* The maximum size of .sfpr. */
6581 #define SFPR_MAX (218*4)
6583 struct sfpr_def_parms
6585 const char name[12];
6586 unsigned char lo, hi;
6587 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6588 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6591 /* Auto-generate _save*, _rest* functions in .sfpr.
6592 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6596 sfpr_define (struct bfd_link_info *info,
6597 const struct sfpr_def_parms *parm,
6600 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6602 size_t len = strlen (parm->name);
6603 bfd_boolean writing = FALSE;
6609 memcpy (sym, parm->name, len);
6612 for (i = parm->lo; i <= parm->hi; i++)
6614 struct ppc_link_hash_entry *h;
6616 sym[len + 0] = i / 10 + '0';
6617 sym[len + 1] = i % 10 + '0';
6618 h = (struct ppc_link_hash_entry *)
6619 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6620 if (stub_sec != NULL)
6623 && h->elf.root.type == bfd_link_hash_defined
6624 && h->elf.root.u.def.section == htab->sfpr)
6626 struct elf_link_hash_entry *s;
6628 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6629 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6632 if (s->root.type == bfd_link_hash_new
6633 || (s->root.type = bfd_link_hash_defined
6634 && s->root.u.def.section == stub_sec))
6636 s->root.type = bfd_link_hash_defined;
6637 s->root.u.def.section = stub_sec;
6638 s->root.u.def.value = (stub_sec->size
6639 + h->elf.root.u.def.value);
6642 s->ref_regular_nonweak = 1;
6643 s->forced_local = 1;
6645 s->root.linker_def = 1;
6653 if (!h->elf.def_regular)
6655 h->elf.root.type = bfd_link_hash_defined;
6656 h->elf.root.u.def.section = htab->sfpr;
6657 h->elf.root.u.def.value = htab->sfpr->size;
6658 h->elf.type = STT_FUNC;
6659 h->elf.def_regular = 1;
6661 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6663 if (htab->sfpr->contents == NULL)
6665 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6666 if (htab->sfpr->contents == NULL)
6673 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6675 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6677 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6678 htab->sfpr->size = p - htab->sfpr->contents;
6686 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6688 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6693 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6695 p = savegpr0 (abfd, p, r);
6696 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6698 bfd_put_32 (abfd, BLR, p);
6703 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6705 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6710 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6712 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6714 p = restgpr0 (abfd, p, r);
6715 bfd_put_32 (abfd, MTLR_R0, p);
6719 p = restgpr0 (abfd, p, 30);
6720 p = restgpr0 (abfd, p, 31);
6722 bfd_put_32 (abfd, BLR, p);
6727 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6729 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6734 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6736 p = savegpr1 (abfd, p, r);
6737 bfd_put_32 (abfd, BLR, p);
6742 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6744 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6749 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6751 p = restgpr1 (abfd, p, r);
6752 bfd_put_32 (abfd, BLR, p);
6757 savefpr (bfd *abfd, bfd_byte *p, int r)
6759 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6764 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6766 p = savefpr (abfd, p, r);
6767 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6769 bfd_put_32 (abfd, BLR, p);
6774 restfpr (bfd *abfd, bfd_byte *p, int r)
6776 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6781 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6783 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6785 p = restfpr (abfd, p, r);
6786 bfd_put_32 (abfd, MTLR_R0, p);
6790 p = restfpr (abfd, p, 30);
6791 p = restfpr (abfd, p, 31);
6793 bfd_put_32 (abfd, BLR, p);
6798 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6800 p = savefpr (abfd, p, r);
6801 bfd_put_32 (abfd, BLR, p);
6806 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6808 p = restfpr (abfd, p, r);
6809 bfd_put_32 (abfd, BLR, p);
6814 savevr (bfd *abfd, bfd_byte *p, int r)
6816 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6818 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6823 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6825 p = savevr (abfd, p, r);
6826 bfd_put_32 (abfd, BLR, p);
6831 restvr (bfd *abfd, bfd_byte *p, int r)
6833 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6835 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6840 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6842 p = restvr (abfd, p, r);
6843 bfd_put_32 (abfd, BLR, p);
6847 /* Called via elf_link_hash_traverse to transfer dynamic linking
6848 information on function code symbol entries to their corresponding
6849 function descriptor symbol entries. */
6852 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6854 struct bfd_link_info *info;
6855 struct ppc_link_hash_table *htab;
6856 struct ppc_link_hash_entry *fh;
6857 struct ppc_link_hash_entry *fdh;
6858 bfd_boolean force_local;
6860 fh = (struct ppc_link_hash_entry *) h;
6861 if (fh->elf.root.type == bfd_link_hash_indirect)
6867 if (fh->elf.root.root.string[0] != '.'
6868 || fh->elf.root.root.string[1] == '\0')
6872 htab = ppc_hash_table (info);
6876 /* Find the corresponding function descriptor symbol. */
6877 fdh = lookup_fdh (fh, htab);
6879 /* Resolve undefined references to dot-symbols as the value
6880 in the function descriptor, if we have one in a regular object.
6881 This is to satisfy cases like ".quad .foo". Calls to functions
6882 in dynamic objects are handled elsewhere. */
6883 if ((fh->elf.root.type == bfd_link_hash_undefined
6884 || fh->elf.root.type == bfd_link_hash_undefweak)
6885 && (fdh->elf.root.type == bfd_link_hash_defined
6886 || fdh->elf.root.type == bfd_link_hash_defweak)
6887 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6888 && opd_entry_value (fdh->elf.root.u.def.section,
6889 fdh->elf.root.u.def.value,
6890 &fh->elf.root.u.def.section,
6891 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6893 fh->elf.root.type = fdh->elf.root.type;
6894 fh->elf.forced_local = 1;
6895 fh->elf.def_regular = fdh->elf.def_regular;
6896 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6899 if (!fh->elf.dynamic)
6901 struct plt_entry *ent;
6903 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6904 if (ent->plt.refcount > 0)
6910 /* Create a descriptor as undefined if necessary. */
6912 && !bfd_link_executable (info)
6913 && (fh->elf.root.type == bfd_link_hash_undefined
6914 || fh->elf.root.type == bfd_link_hash_undefweak))
6916 fdh = make_fdh (info, fh);
6921 /* We can't support overriding of symbols on a fake descriptor. */
6924 && (fh->elf.root.type == bfd_link_hash_defined
6925 || fh->elf.root.type == bfd_link_hash_defweak))
6926 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6928 /* Transfer dynamic linking information to the function descriptor. */
6931 fdh->elf.ref_regular |= fh->elf.ref_regular;
6932 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6933 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6934 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6935 fdh->elf.dynamic |= fh->elf.dynamic;
6936 fdh->elf.needs_plt |= (fh->elf.needs_plt
6937 || fh->elf.type == STT_FUNC
6938 || fh->elf.type == STT_GNU_IFUNC);
6939 move_plt_plist (fh, fdh);
6941 if (!fdh->elf.forced_local
6942 && fh->elf.dynindx != -1)
6943 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6947 /* Now that the info is on the function descriptor, clear the
6948 function code sym info. Any function code syms for which we
6949 don't have a definition in a regular file, we force local.
6950 This prevents a shared library from exporting syms that have
6951 been imported from another library. Function code syms that
6952 are really in the library we must leave global to prevent the
6953 linker dragging in a definition from a static library. */
6954 force_local = (!fh->elf.def_regular
6956 || !fdh->elf.def_regular
6957 || fdh->elf.forced_local);
6958 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6963 static const struct sfpr_def_parms save_res_funcs[] =
6965 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6966 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6967 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6968 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6969 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6970 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6971 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6972 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6973 { "._savef", 14, 31, savefpr, savefpr1_tail },
6974 { "._restf", 14, 31, restfpr, restfpr1_tail },
6975 { "_savevr_", 20, 31, savevr, savevr_tail },
6976 { "_restvr_", 20, 31, restvr, restvr_tail }
6979 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6980 this hook to a) provide some gcc support functions, and b) transfer
6981 dynamic linking information gathered so far on function code symbol
6982 entries, to their corresponding function descriptor symbol entries. */
6985 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6986 struct bfd_link_info *info)
6988 struct ppc_link_hash_table *htab;
6990 htab = ppc_hash_table (info);
6994 /* Provide any missing _save* and _rest* functions. */
6995 if (htab->sfpr != NULL)
6999 htab->sfpr->size = 0;
7000 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7001 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7003 if (htab->sfpr->size == 0)
7004 htab->sfpr->flags |= SEC_EXCLUDE;
7007 if (bfd_link_relocatable (info))
7010 if (htab->elf.hgot != NULL)
7012 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7013 /* Make .TOC. defined so as to prevent it being made dynamic.
7014 The wrong value here is fixed later in ppc64_elf_set_toc. */
7015 if (!htab->elf.hgot->def_regular
7016 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7018 htab->elf.hgot->root.type = bfd_link_hash_defined;
7019 htab->elf.hgot->root.u.def.value = 0;
7020 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7021 htab->elf.hgot->def_regular = 1;
7022 htab->elf.hgot->root.linker_def = 1;
7024 htab->elf.hgot->type = STT_OBJECT;
7025 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7029 if (htab->need_func_desc_adj)
7031 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7032 htab->need_func_desc_adj = 0;
7038 /* Find dynamic relocs for H that apply to read-only sections. */
7041 readonly_dynrelocs (struct elf_link_hash_entry *h)
7043 struct ppc_link_hash_entry *eh;
7044 struct elf_dyn_relocs *p;
7046 eh = (struct ppc_link_hash_entry *) h;
7047 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7049 asection *s = p->sec->output_section;
7051 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7057 /* Return true if we have dynamic relocs against H or any of its weak
7058 aliases, that apply to read-only sections. Cannot be used after
7059 size_dynamic_sections. */
7062 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7064 struct ppc_link_hash_entry *eh;
7066 eh = (struct ppc_link_hash_entry *) h;
7069 if (readonly_dynrelocs (&eh->elf))
7071 eh = (struct ppc_link_hash_entry *) eh->elf.u.alias;
7072 } while (eh != NULL && &eh->elf != h);
7077 /* Return whether EH has pc-relative dynamic relocs. */
7080 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7082 struct elf_dyn_relocs *p;
7084 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7085 if (p->pc_count != 0)
7090 /* Return true if a global entry stub will be created for H. Valid
7091 for ELFv2 before plt entries have been allocated. */
7094 global_entry_stub (struct elf_link_hash_entry *h)
7096 struct plt_entry *pent;
7098 if (!h->pointer_equality_needed
7102 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7103 if (pent->plt.refcount > 0
7104 && pent->addend == 0)
7110 /* Adjust a symbol defined by a dynamic object and referenced by a
7111 regular object. The current definition is in some section of the
7112 dynamic object, but we're not including those sections. We have to
7113 change the definition to something the rest of the link can
7117 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7118 struct elf_link_hash_entry *h)
7120 struct ppc_link_hash_table *htab;
7123 htab = ppc_hash_table (info);
7127 /* Deal with function syms. */
7128 if (h->type == STT_FUNC
7129 || h->type == STT_GNU_IFUNC
7132 bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res
7133 || SYMBOL_CALLS_LOCAL (info, h)
7134 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
7135 /* Discard dyn_relocs when non-pic if we've decided that a
7136 function symbol is local and not an ifunc. We keep dynamic
7137 relocs for ifuncs when local rather than always emitting a
7138 plt call stub for them and defining the symbol on the call
7139 stub. We can't do that for ELFv1 anyway (a function symbol
7140 is defined on a descriptor, not code) and it can be faster at
7141 run-time due to not needing to bounce through a stub. The
7142 dyn_relocs for ifuncs will be applied even in a static
7144 if (!bfd_link_pic (info)
7145 && h->type != STT_GNU_IFUNC
7147 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7149 /* Clear procedure linkage table information for any symbol that
7150 won't need a .plt entry. */
7151 struct plt_entry *ent;
7152 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7153 if (ent->plt.refcount > 0)
7156 || (h->type != STT_GNU_IFUNC && local))
7158 h->plt.plist = NULL;
7160 h->pointer_equality_needed = 0;
7162 else if (abiversion (info->output_bfd) >= 2)
7164 /* Taking a function's address in a read/write section
7165 doesn't require us to define the function symbol in the
7166 executable on a global entry stub. A dynamic reloc can
7167 be used instead. The reason we prefer a few more dynamic
7168 relocs is that calling via a global entry stub costs a
7169 few more instructions, and pointer_equality_needed causes
7170 extra work in ld.so when resolving these symbols. */
7171 if (global_entry_stub (h))
7173 if (!readonly_dynrelocs (h))
7175 h->pointer_equality_needed = 0;
7176 /* If we haven't seen a branch reloc then we don't need
7179 h->plt.plist = NULL;
7181 else if (!bfd_link_pic (info))
7182 /* We are going to be defining the function symbol on the
7183 plt stub, so no dyn_relocs needed when non-pic. */
7184 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7187 /* ELFv2 function symbols can't have copy relocs. */
7190 else if (!h->needs_plt
7191 && !readonly_dynrelocs (h))
7193 /* If we haven't seen a branch reloc then we don't need a
7195 h->plt.plist = NULL;
7196 h->pointer_equality_needed = 0;
7201 h->plt.plist = NULL;
7203 /* If this is a weak symbol, and there is a real definition, the
7204 processor independent code will have arranged for us to see the
7205 real definition first, and we can just use the same value. */
7206 if (h->is_weakalias)
7208 struct elf_link_hash_entry *def = weakdef (h);
7209 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7210 h->root.u.def.section = def->root.u.def.section;
7211 h->root.u.def.value = def->root.u.def.value;
7212 if (def->root.u.def.section == htab->elf.sdynbss
7213 || def->root.u.def.section == htab->elf.sdynrelro)
7214 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7218 /* If we are creating a shared library, we must presume that the
7219 only references to the symbol are via the global offset table.
7220 For such cases we need not do anything here; the relocations will
7221 be handled correctly by relocate_section. */
7222 if (bfd_link_pic (info))
7225 /* If there are no references to this symbol that do not use the
7226 GOT, we don't need to generate a copy reloc. */
7227 if (!h->non_got_ref)
7230 /* Don't generate a copy reloc for symbols defined in the executable. */
7231 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7233 /* If -z nocopyreloc was given, don't generate them either. */
7234 || info->nocopyreloc
7236 /* If we didn't find any dynamic relocs in read-only sections, then
7237 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7238 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7240 /* Protected variables do not work with .dynbss. The copy in
7241 .dynbss won't be used by the shared library with the protected
7242 definition for the variable. Text relocations are preferable
7243 to an incorrect program. */
7244 || h->protected_def)
7247 if (h->plt.plist != NULL)
7249 /* We should never get here, but unfortunately there are versions
7250 of gcc out there that improperly (for this ABI) put initialized
7251 function pointers, vtable refs and suchlike in read-only
7252 sections. Allow them to proceed, but warn that this might
7253 break at runtime. */
7254 info->callbacks->einfo
7255 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7256 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7257 h->root.root.string);
7260 /* This is a reference to a symbol defined by a dynamic object which
7261 is not a function. */
7263 /* We must allocate the symbol in our .dynbss section, which will
7264 become part of the .bss section of the executable. There will be
7265 an entry for this symbol in the .dynsym section. The dynamic
7266 object will contain position independent code, so all references
7267 from the dynamic object to this symbol will go through the global
7268 offset table. The dynamic linker will use the .dynsym entry to
7269 determine the address it must put in the global offset table, so
7270 both the dynamic object and the regular object will refer to the
7271 same memory location for the variable. */
7272 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7274 s = htab->elf.sdynrelro;
7275 srel = htab->elf.sreldynrelro;
7279 s = htab->elf.sdynbss;
7280 srel = htab->elf.srelbss;
7282 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7284 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7285 linker to copy the initial value out of the dynamic object
7286 and into the runtime process image. */
7287 srel->size += sizeof (Elf64_External_Rela);
7291 /* We no longer want dyn_relocs. */
7292 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7293 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7296 /* If given a function descriptor symbol, hide both the function code
7297 sym and the descriptor. */
7299 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7300 struct elf_link_hash_entry *h,
7301 bfd_boolean force_local)
7303 struct ppc_link_hash_entry *eh;
7304 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7306 eh = (struct ppc_link_hash_entry *) h;
7307 if (eh->is_func_descriptor)
7309 struct ppc_link_hash_entry *fh = eh->oh;
7314 struct elf_link_hash_table *htab = elf_hash_table (info);
7317 /* We aren't supposed to use alloca in BFD because on
7318 systems which do not have alloca the version in libiberty
7319 calls xmalloc, which might cause the program to crash
7320 when it runs out of memory. This function doesn't have a
7321 return status, so there's no way to gracefully return an
7322 error. So cheat. We know that string[-1] can be safely
7323 accessed; It's either a string in an ELF string table,
7324 or allocated in an objalloc structure. */
7326 p = eh->elf.root.root.string - 1;
7329 fh = (struct ppc_link_hash_entry *)
7330 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7333 /* Unfortunately, if it so happens that the string we were
7334 looking for was allocated immediately before this string,
7335 then we overwrote the string terminator. That's the only
7336 reason the lookup should fail. */
7339 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7340 while (q >= eh->elf.root.root.string && *q == *p)
7342 if (q < eh->elf.root.root.string && *p == '.')
7343 fh = (struct ppc_link_hash_entry *)
7344 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7353 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7358 get_sym_h (struct elf_link_hash_entry **hp,
7359 Elf_Internal_Sym **symp,
7361 unsigned char **tls_maskp,
7362 Elf_Internal_Sym **locsymsp,
7363 unsigned long r_symndx,
7366 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7368 if (r_symndx >= symtab_hdr->sh_info)
7370 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7371 struct elf_link_hash_entry *h;
7373 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7374 h = elf_follow_link (h);
7382 if (symsecp != NULL)
7384 asection *symsec = NULL;
7385 if (h->root.type == bfd_link_hash_defined
7386 || h->root.type == bfd_link_hash_defweak)
7387 symsec = h->root.u.def.section;
7391 if (tls_maskp != NULL)
7393 struct ppc_link_hash_entry *eh;
7395 eh = (struct ppc_link_hash_entry *) h;
7396 *tls_maskp = &eh->tls_mask;
7401 Elf_Internal_Sym *sym;
7402 Elf_Internal_Sym *locsyms = *locsymsp;
7404 if (locsyms == NULL)
7406 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7407 if (locsyms == NULL)
7408 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7409 symtab_hdr->sh_info,
7410 0, NULL, NULL, NULL);
7411 if (locsyms == NULL)
7413 *locsymsp = locsyms;
7415 sym = locsyms + r_symndx;
7423 if (symsecp != NULL)
7424 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7426 if (tls_maskp != NULL)
7428 struct got_entry **lgot_ents;
7429 unsigned char *tls_mask;
7432 lgot_ents = elf_local_got_ents (ibfd);
7433 if (lgot_ents != NULL)
7435 struct plt_entry **local_plt = (struct plt_entry **)
7436 (lgot_ents + symtab_hdr->sh_info);
7437 unsigned char *lgot_masks = (unsigned char *)
7438 (local_plt + symtab_hdr->sh_info);
7439 tls_mask = &lgot_masks[r_symndx];
7441 *tls_maskp = tls_mask;
7447 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7448 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7449 type suitable for optimization, and 1 otherwise. */
7452 get_tls_mask (unsigned char **tls_maskp,
7453 unsigned long *toc_symndx,
7454 bfd_vma *toc_addend,
7455 Elf_Internal_Sym **locsymsp,
7456 const Elf_Internal_Rela *rel,
7459 unsigned long r_symndx;
7461 struct elf_link_hash_entry *h;
7462 Elf_Internal_Sym *sym;
7466 r_symndx = ELF64_R_SYM (rel->r_info);
7467 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7470 if ((*tls_maskp != NULL && **tls_maskp != 0)
7472 || ppc64_elf_section_data (sec) == NULL
7473 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7476 /* Look inside a TOC section too. */
7479 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7480 off = h->root.u.def.value;
7483 off = sym->st_value;
7484 off += rel->r_addend;
7485 BFD_ASSERT (off % 8 == 0);
7486 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7487 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7488 if (toc_symndx != NULL)
7489 *toc_symndx = r_symndx;
7490 if (toc_addend != NULL)
7491 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7492 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7494 if ((h == NULL || is_static_defined (h))
7495 && (next_r == -1 || next_r == -2))
7500 /* Find (or create) an entry in the tocsave hash table. */
7502 static struct tocsave_entry *
7503 tocsave_find (struct ppc_link_hash_table *htab,
7504 enum insert_option insert,
7505 Elf_Internal_Sym **local_syms,
7506 const Elf_Internal_Rela *irela,
7509 unsigned long r_indx;
7510 struct elf_link_hash_entry *h;
7511 Elf_Internal_Sym *sym;
7512 struct tocsave_entry ent, *p;
7514 struct tocsave_entry **slot;
7516 r_indx = ELF64_R_SYM (irela->r_info);
7517 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7519 if (ent.sec == NULL || ent.sec->output_section == NULL)
7522 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7527 ent.offset = h->root.u.def.value;
7529 ent.offset = sym->st_value;
7530 ent.offset += irela->r_addend;
7532 hash = tocsave_htab_hash (&ent);
7533 slot = ((struct tocsave_entry **)
7534 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7540 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7549 /* Adjust all global syms defined in opd sections. In gcc generated
7550 code for the old ABI, these will already have been done. */
7553 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7555 struct ppc_link_hash_entry *eh;
7557 struct _opd_sec_data *opd;
7559 if (h->root.type == bfd_link_hash_indirect)
7562 if (h->root.type != bfd_link_hash_defined
7563 && h->root.type != bfd_link_hash_defweak)
7566 eh = (struct ppc_link_hash_entry *) h;
7567 if (eh->adjust_done)
7570 sym_sec = eh->elf.root.u.def.section;
7571 opd = get_opd_info (sym_sec);
7572 if (opd != NULL && opd->adjust != NULL)
7574 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7577 /* This entry has been deleted. */
7578 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7581 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7582 if (discarded_section (dsec))
7584 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7588 eh->elf.root.u.def.value = 0;
7589 eh->elf.root.u.def.section = dsec;
7592 eh->elf.root.u.def.value += adjust;
7593 eh->adjust_done = 1;
7598 /* Handles decrementing dynamic reloc counts for the reloc specified by
7599 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7600 have already been determined. */
7603 dec_dynrel_count (bfd_vma r_info,
7605 struct bfd_link_info *info,
7606 Elf_Internal_Sym **local_syms,
7607 struct elf_link_hash_entry *h,
7608 Elf_Internal_Sym *sym)
7610 enum elf_ppc64_reloc_type r_type;
7611 asection *sym_sec = NULL;
7613 /* Can this reloc be dynamic? This switch, and later tests here
7614 should be kept in sync with the code in check_relocs. */
7615 r_type = ELF64_R_TYPE (r_info);
7621 case R_PPC64_TPREL16:
7622 case R_PPC64_TPREL16_LO:
7623 case R_PPC64_TPREL16_HI:
7624 case R_PPC64_TPREL16_HA:
7625 case R_PPC64_TPREL16_DS:
7626 case R_PPC64_TPREL16_LO_DS:
7627 case R_PPC64_TPREL16_HIGH:
7628 case R_PPC64_TPREL16_HIGHA:
7629 case R_PPC64_TPREL16_HIGHER:
7630 case R_PPC64_TPREL16_HIGHERA:
7631 case R_PPC64_TPREL16_HIGHEST:
7632 case R_PPC64_TPREL16_HIGHESTA:
7633 case R_PPC64_TPREL64:
7634 case R_PPC64_DTPMOD64:
7635 case R_PPC64_DTPREL64:
7636 case R_PPC64_ADDR64:
7640 case R_PPC64_ADDR14:
7641 case R_PPC64_ADDR14_BRNTAKEN:
7642 case R_PPC64_ADDR14_BRTAKEN:
7643 case R_PPC64_ADDR16:
7644 case R_PPC64_ADDR16_DS:
7645 case R_PPC64_ADDR16_HA:
7646 case R_PPC64_ADDR16_HI:
7647 case R_PPC64_ADDR16_HIGH:
7648 case R_PPC64_ADDR16_HIGHA:
7649 case R_PPC64_ADDR16_HIGHER:
7650 case R_PPC64_ADDR16_HIGHERA:
7651 case R_PPC64_ADDR16_HIGHEST:
7652 case R_PPC64_ADDR16_HIGHESTA:
7653 case R_PPC64_ADDR16_LO:
7654 case R_PPC64_ADDR16_LO_DS:
7655 case R_PPC64_ADDR24:
7656 case R_PPC64_ADDR32:
7657 case R_PPC64_UADDR16:
7658 case R_PPC64_UADDR32:
7659 case R_PPC64_UADDR64:
7664 if (local_syms != NULL)
7666 unsigned long r_symndx;
7667 bfd *ibfd = sec->owner;
7669 r_symndx = ELF64_R_SYM (r_info);
7670 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7674 if ((bfd_link_pic (info)
7675 && (must_be_dyn_reloc (info, r_type)
7677 && (!SYMBOLIC_BIND (info, h)
7678 || h->root.type == bfd_link_hash_defweak
7679 || !h->def_regular))))
7680 || (ELIMINATE_COPY_RELOCS
7681 && !bfd_link_pic (info)
7683 && (h->root.type == bfd_link_hash_defweak
7684 || !h->def_regular)))
7691 struct elf_dyn_relocs *p;
7692 struct elf_dyn_relocs **pp;
7693 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7695 /* elf_gc_sweep may have already removed all dyn relocs associated
7696 with local syms for a given section. Also, symbol flags are
7697 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7698 report a dynreloc miscount. */
7699 if (*pp == NULL && info->gc_sections)
7702 while ((p = *pp) != NULL)
7706 if (!must_be_dyn_reloc (info, r_type))
7718 struct ppc_dyn_relocs *p;
7719 struct ppc_dyn_relocs **pp;
7721 bfd_boolean is_ifunc;
7723 if (local_syms == NULL)
7724 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7725 if (sym_sec == NULL)
7728 vpp = &elf_section_data (sym_sec)->local_dynrel;
7729 pp = (struct ppc_dyn_relocs **) vpp;
7731 if (*pp == NULL && info->gc_sections)
7734 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7735 while ((p = *pp) != NULL)
7737 if (p->sec == sec && p->ifunc == is_ifunc)
7748 /* xgettext:c-format */
7749 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7751 bfd_set_error (bfd_error_bad_value);
7755 /* Remove unused Official Procedure Descriptor entries. Currently we
7756 only remove those associated with functions in discarded link-once
7757 sections, or weakly defined functions that have been overridden. It
7758 would be possible to remove many more entries for statically linked
7762 ppc64_elf_edit_opd (struct bfd_link_info *info)
7765 bfd_boolean some_edited = FALSE;
7766 asection *need_pad = NULL;
7767 struct ppc_link_hash_table *htab;
7769 htab = ppc_hash_table (info);
7773 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7776 Elf_Internal_Rela *relstart, *rel, *relend;
7777 Elf_Internal_Shdr *symtab_hdr;
7778 Elf_Internal_Sym *local_syms;
7779 struct _opd_sec_data *opd;
7780 bfd_boolean need_edit, add_aux_fields, broken;
7781 bfd_size_type cnt_16b = 0;
7783 if (!is_ppc64_elf (ibfd))
7786 sec = bfd_get_section_by_name (ibfd, ".opd");
7787 if (sec == NULL || sec->size == 0)
7790 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7793 if (sec->output_section == bfd_abs_section_ptr)
7796 /* Look through the section relocs. */
7797 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7801 symtab_hdr = &elf_symtab_hdr (ibfd);
7803 /* Read the relocations. */
7804 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7806 if (relstart == NULL)
7809 /* First run through the relocs to check they are sane, and to
7810 determine whether we need to edit this opd section. */
7814 relend = relstart + sec->reloc_count;
7815 for (rel = relstart; rel < relend; )
7817 enum elf_ppc64_reloc_type r_type;
7818 unsigned long r_symndx;
7820 struct elf_link_hash_entry *h;
7821 Elf_Internal_Sym *sym;
7824 /* .opd contains an array of 16 or 24 byte entries. We're
7825 only interested in the reloc pointing to a function entry
7827 offset = rel->r_offset;
7828 if (rel + 1 == relend
7829 || rel[1].r_offset != offset + 8)
7831 /* If someone messes with .opd alignment then after a
7832 "ld -r" we might have padding in the middle of .opd.
7833 Also, there's nothing to prevent someone putting
7834 something silly in .opd with the assembler. No .opd
7835 optimization for them! */
7838 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7843 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7844 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7847 /* xgettext:c-format */
7848 (_("%B: unexpected reloc type %u in .opd section"),
7854 r_symndx = ELF64_R_SYM (rel->r_info);
7855 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7859 if (sym_sec == NULL || sym_sec->owner == NULL)
7861 const char *sym_name;
7863 sym_name = h->root.root.string;
7865 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7869 /* xgettext:c-format */
7870 (_("%B: undefined sym `%s' in .opd section"),
7876 /* opd entries are always for functions defined in the
7877 current input bfd. If the symbol isn't defined in the
7878 input bfd, then we won't be using the function in this
7879 bfd; It must be defined in a linkonce section in another
7880 bfd, or is weak. It's also possible that we are
7881 discarding the function due to a linker script /DISCARD/,
7882 which we test for via the output_section. */
7883 if (sym_sec->owner != ibfd
7884 || sym_sec->output_section == bfd_abs_section_ptr)
7888 if (rel + 1 == relend
7889 || (rel + 2 < relend
7890 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7895 if (sec->size == offset + 24)
7900 if (sec->size == offset + 16)
7907 else if (rel + 1 < relend
7908 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7909 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7911 if (rel[0].r_offset == offset + 16)
7913 else if (rel[0].r_offset != offset + 24)
7920 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7922 if (!broken && (need_edit || add_aux_fields))
7924 Elf_Internal_Rela *write_rel;
7925 Elf_Internal_Shdr *rel_hdr;
7926 bfd_byte *rptr, *wptr;
7927 bfd_byte *new_contents;
7930 new_contents = NULL;
7931 amt = OPD_NDX (sec->size) * sizeof (long);
7932 opd = &ppc64_elf_section_data (sec)->u.opd;
7933 opd->adjust = bfd_zalloc (sec->owner, amt);
7934 if (opd->adjust == NULL)
7937 /* This seems a waste of time as input .opd sections are all
7938 zeros as generated by gcc, but I suppose there's no reason
7939 this will always be so. We might start putting something in
7940 the third word of .opd entries. */
7941 if ((sec->flags & SEC_IN_MEMORY) == 0)
7944 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7949 if (local_syms != NULL
7950 && symtab_hdr->contents != (unsigned char *) local_syms)
7952 if (elf_section_data (sec)->relocs != relstart)
7956 sec->contents = loc;
7957 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7960 elf_section_data (sec)->relocs = relstart;
7962 new_contents = sec->contents;
7965 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7966 if (new_contents == NULL)
7970 wptr = new_contents;
7971 rptr = sec->contents;
7972 write_rel = relstart;
7973 for (rel = relstart; rel < relend; )
7975 unsigned long r_symndx;
7977 struct elf_link_hash_entry *h;
7978 struct ppc_link_hash_entry *fdh = NULL;
7979 Elf_Internal_Sym *sym;
7981 Elf_Internal_Rela *next_rel;
7984 r_symndx = ELF64_R_SYM (rel->r_info);
7985 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7990 if (next_rel + 1 == relend
7991 || (next_rel + 2 < relend
7992 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7995 /* See if the .opd entry is full 24 byte or
7996 16 byte (with fd_aux entry overlapped with next
7999 if (next_rel == relend)
8001 if (sec->size == rel->r_offset + 16)
8004 else if (next_rel->r_offset == rel->r_offset + 16)
8008 && h->root.root.string[0] == '.')
8010 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8013 fdh = ppc_follow_link (fdh);
8014 if (fdh->elf.root.type != bfd_link_hash_defined
8015 && fdh->elf.root.type != bfd_link_hash_defweak)
8020 skip = (sym_sec->owner != ibfd
8021 || sym_sec->output_section == bfd_abs_section_ptr);
8024 if (fdh != NULL && sym_sec->owner == ibfd)
8026 /* Arrange for the function descriptor sym
8028 fdh->elf.root.u.def.value = 0;
8029 fdh->elf.root.u.def.section = sym_sec;
8031 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8033 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8038 if (!dec_dynrel_count (rel->r_info, sec, info,
8042 if (++rel == next_rel)
8045 r_symndx = ELF64_R_SYM (rel->r_info);
8046 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8053 /* We'll be keeping this opd entry. */
8058 /* Redefine the function descriptor symbol to
8059 this location in the opd section. It is
8060 necessary to update the value here rather
8061 than using an array of adjustments as we do
8062 for local symbols, because various places
8063 in the generic ELF code use the value
8064 stored in u.def.value. */
8065 fdh->elf.root.u.def.value = wptr - new_contents;
8066 fdh->adjust_done = 1;
8069 /* Local syms are a bit tricky. We could
8070 tweak them as they can be cached, but
8071 we'd need to look through the local syms
8072 for the function descriptor sym which we
8073 don't have at the moment. So keep an
8074 array of adjustments. */
8075 adjust = (wptr - new_contents) - (rptr - sec->contents);
8076 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8079 memcpy (wptr, rptr, opd_ent_size);
8080 wptr += opd_ent_size;
8081 if (add_aux_fields && opd_ent_size == 16)
8083 memset (wptr, '\0', 8);
8087 /* We need to adjust any reloc offsets to point to the
8089 for ( ; rel != next_rel; ++rel)
8091 rel->r_offset += adjust;
8092 if (write_rel != rel)
8093 memcpy (write_rel, rel, sizeof (*rel));
8098 rptr += opd_ent_size;
8101 sec->size = wptr - new_contents;
8102 sec->reloc_count = write_rel - relstart;
8105 free (sec->contents);
8106 sec->contents = new_contents;
8109 /* Fudge the header size too, as this is used later in
8110 elf_bfd_final_link if we are emitting relocs. */
8111 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8112 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8115 else if (elf_section_data (sec)->relocs != relstart)
8118 if (local_syms != NULL
8119 && symtab_hdr->contents != (unsigned char *) local_syms)
8121 if (!info->keep_memory)
8124 symtab_hdr->contents = (unsigned char *) local_syms;
8129 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8131 /* If we are doing a final link and the last .opd entry is just 16 byte
8132 long, add a 8 byte padding after it. */
8133 if (need_pad != NULL && !bfd_link_relocatable (info))
8137 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8139 BFD_ASSERT (need_pad->size > 0);
8141 p = bfd_malloc (need_pad->size + 8);
8145 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8146 p, 0, need_pad->size))
8149 need_pad->contents = p;
8150 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8154 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8158 need_pad->contents = p;
8161 memset (need_pad->contents + need_pad->size, 0, 8);
8162 need_pad->size += 8;
8168 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8171 ppc64_elf_tls_setup (struct bfd_link_info *info)
8173 struct ppc_link_hash_table *htab;
8175 htab = ppc_hash_table (info);
8179 if (abiversion (info->output_bfd) == 1)
8182 if (htab->params->no_multi_toc)
8183 htab->do_multi_toc = 0;
8184 else if (!htab->do_multi_toc)
8185 htab->params->no_multi_toc = 1;
8187 /* Default to --no-plt-localentry, as this option can cause problems
8188 with symbol interposition. For example, glibc libpthread.so and
8189 libc.so duplicate many pthread symbols, with a fallback
8190 implementation in libc.so. In some cases the fallback does more
8191 work than the pthread implementation. __pthread_condattr_destroy
8192 is one such symbol: the libpthread.so implementation is
8193 localentry:0 while the libc.so implementation is localentry:8.
8194 An app that "cleverly" uses dlopen to only load necessary
8195 libraries at runtime may omit loading libpthread.so when not
8196 running multi-threaded, which then results in the libc.so
8197 fallback symbols being used and ld.so complaining. Now there
8198 are workarounds in ld (see non_zero_localentry) to detect the
8199 pthread situation, but that may not be the only case where
8200 --plt-localentry can cause trouble. */
8201 if (htab->params->plt_localentry0 < 0)
8202 htab->params->plt_localentry0 = 0;
8203 if (htab->params->plt_localentry0
8204 && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8205 FALSE, FALSE, FALSE) == NULL)
8206 info->callbacks->einfo
8207 (_("%P: warning: --plt-localentry is especially dangerous without "
8208 "ld.so support to detect ABI violations.\n"));
8210 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8211 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8212 FALSE, FALSE, TRUE));
8213 /* Move dynamic linking info to the function descriptor sym. */
8214 if (htab->tls_get_addr != NULL)
8215 func_desc_adjust (&htab->tls_get_addr->elf, info);
8216 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8217 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8218 FALSE, FALSE, TRUE));
8219 if (htab->params->tls_get_addr_opt)
8221 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8223 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8224 FALSE, FALSE, TRUE);
8226 func_desc_adjust (opt, info);
8227 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8228 FALSE, FALSE, TRUE);
8230 && (opt_fd->root.type == bfd_link_hash_defined
8231 || opt_fd->root.type == bfd_link_hash_defweak))
8233 /* If glibc supports an optimized __tls_get_addr call stub,
8234 signalled by the presence of __tls_get_addr_opt, and we'll
8235 be calling __tls_get_addr via a plt call stub, then
8236 make __tls_get_addr point to __tls_get_addr_opt. */
8237 tga_fd = &htab->tls_get_addr_fd->elf;
8238 if (htab->elf.dynamic_sections_created
8240 && (tga_fd->type == STT_FUNC
8241 || tga_fd->needs_plt)
8242 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8243 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8245 struct plt_entry *ent;
8247 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8248 if (ent->plt.refcount > 0)
8252 tga_fd->root.type = bfd_link_hash_indirect;
8253 tga_fd->root.u.i.link = &opt_fd->root;
8254 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8256 if (opt_fd->dynindx != -1)
8258 /* Use __tls_get_addr_opt in dynamic relocations. */
8259 opt_fd->dynindx = -1;
8260 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8261 opt_fd->dynstr_index);
8262 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8265 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8266 tga = &htab->tls_get_addr->elf;
8267 if (opt != NULL && tga != NULL)
8269 tga->root.type = bfd_link_hash_indirect;
8270 tga->root.u.i.link = &opt->root;
8271 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8273 _bfd_elf_link_hash_hide_symbol (info, opt,
8275 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8277 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8278 htab->tls_get_addr_fd->is_func_descriptor = 1;
8279 if (htab->tls_get_addr != NULL)
8281 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8282 htab->tls_get_addr->is_func = 1;
8287 else if (htab->params->tls_get_addr_opt < 0)
8288 htab->params->tls_get_addr_opt = 0;
8290 return _bfd_elf_tls_setup (info->output_bfd, info);
8293 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8297 branch_reloc_hash_match (const bfd *ibfd,
8298 const Elf_Internal_Rela *rel,
8299 const struct ppc_link_hash_entry *hash1,
8300 const struct ppc_link_hash_entry *hash2)
8302 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8303 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8304 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8306 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8308 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8309 struct elf_link_hash_entry *h;
8311 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8312 h = elf_follow_link (h);
8313 if (h == &hash1->elf || h == &hash2->elf)
8319 /* Run through all the TLS relocs looking for optimization
8320 opportunities. The linker has been hacked (see ppc64elf.em) to do
8321 a preliminary section layout so that we know the TLS segment
8322 offsets. We can't optimize earlier because some optimizations need
8323 to know the tp offset, and we need to optimize before allocating
8324 dynamic relocations. */
8327 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8331 struct ppc_link_hash_table *htab;
8332 unsigned char *toc_ref;
8335 if (!bfd_link_executable (info))
8338 htab = ppc_hash_table (info);
8342 /* Make two passes over the relocs. On the first pass, mark toc
8343 entries involved with tls relocs, and check that tls relocs
8344 involved in setting up a tls_get_addr call are indeed followed by
8345 such a call. If they are not, we can't do any tls optimization.
8346 On the second pass twiddle tls_mask flags to notify
8347 relocate_section that optimization can be done, and adjust got
8348 and plt refcounts. */
8350 for (pass = 0; pass < 2; ++pass)
8351 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8353 Elf_Internal_Sym *locsyms = NULL;
8354 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8356 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8357 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8359 Elf_Internal_Rela *relstart, *rel, *relend;
8360 bfd_boolean found_tls_get_addr_arg = 0;
8362 /* Read the relocations. */
8363 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8365 if (relstart == NULL)
8371 relend = relstart + sec->reloc_count;
8372 for (rel = relstart; rel < relend; rel++)
8374 enum elf_ppc64_reloc_type r_type;
8375 unsigned long r_symndx;
8376 struct elf_link_hash_entry *h;
8377 Elf_Internal_Sym *sym;
8379 unsigned char *tls_mask;
8380 unsigned char tls_set, tls_clear, tls_type = 0;
8382 bfd_boolean ok_tprel, is_local;
8383 long toc_ref_index = 0;
8384 int expecting_tls_get_addr = 0;
8385 bfd_boolean ret = FALSE;
8387 r_symndx = ELF64_R_SYM (rel->r_info);
8388 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8392 if (elf_section_data (sec)->relocs != relstart)
8394 if (toc_ref != NULL)
8397 && (elf_symtab_hdr (ibfd).contents
8398 != (unsigned char *) locsyms))
8405 if (h->root.type == bfd_link_hash_defined
8406 || h->root.type == bfd_link_hash_defweak)
8407 value = h->root.u.def.value;
8408 else if (h->root.type == bfd_link_hash_undefweak)
8412 found_tls_get_addr_arg = 0;
8417 /* Symbols referenced by TLS relocs must be of type
8418 STT_TLS. So no need for .opd local sym adjust. */
8419 value = sym->st_value;
8428 && h->root.type == bfd_link_hash_undefweak)
8430 else if (sym_sec != NULL
8431 && sym_sec->output_section != NULL)
8433 value += sym_sec->output_offset;
8434 value += sym_sec->output_section->vma;
8435 value -= htab->elf.tls_sec->vma;
8436 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8437 < (bfd_vma) 1 << 32);
8441 r_type = ELF64_R_TYPE (rel->r_info);
8442 /* If this section has old-style __tls_get_addr calls
8443 without marker relocs, then check that each
8444 __tls_get_addr call reloc is preceded by a reloc
8445 that conceivably belongs to the __tls_get_addr arg
8446 setup insn. If we don't find matching arg setup
8447 relocs, don't do any tls optimization. */
8449 && sec->has_tls_get_addr_call
8451 && (h == &htab->tls_get_addr->elf
8452 || h == &htab->tls_get_addr_fd->elf)
8453 && !found_tls_get_addr_arg
8454 && is_branch_reloc (r_type))
8456 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8457 "TLS optimization disabled\n"),
8458 ibfd, sec, rel->r_offset);
8463 found_tls_get_addr_arg = 0;
8466 case R_PPC64_GOT_TLSLD16:
8467 case R_PPC64_GOT_TLSLD16_LO:
8468 expecting_tls_get_addr = 1;
8469 found_tls_get_addr_arg = 1;
8472 case R_PPC64_GOT_TLSLD16_HI:
8473 case R_PPC64_GOT_TLSLD16_HA:
8474 /* These relocs should never be against a symbol
8475 defined in a shared lib. Leave them alone if
8476 that turns out to be the case. */
8483 tls_type = TLS_TLS | TLS_LD;
8486 case R_PPC64_GOT_TLSGD16:
8487 case R_PPC64_GOT_TLSGD16_LO:
8488 expecting_tls_get_addr = 1;
8489 found_tls_get_addr_arg = 1;
8492 case R_PPC64_GOT_TLSGD16_HI:
8493 case R_PPC64_GOT_TLSGD16_HA:
8499 tls_set = TLS_TLS | TLS_TPRELGD;
8501 tls_type = TLS_TLS | TLS_GD;
8504 case R_PPC64_GOT_TPREL16_DS:
8505 case R_PPC64_GOT_TPREL16_LO_DS:
8506 case R_PPC64_GOT_TPREL16_HI:
8507 case R_PPC64_GOT_TPREL16_HA:
8512 tls_clear = TLS_TPREL;
8513 tls_type = TLS_TLS | TLS_TPREL;
8520 found_tls_get_addr_arg = 1;
8525 case R_PPC64_TOC16_LO:
8526 if (sym_sec == NULL || sym_sec != toc)
8529 /* Mark this toc entry as referenced by a TLS
8530 code sequence. We can do that now in the
8531 case of R_PPC64_TLS, and after checking for
8532 tls_get_addr for the TOC16 relocs. */
8533 if (toc_ref == NULL)
8534 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8535 if (toc_ref == NULL)
8539 value = h->root.u.def.value;
8541 value = sym->st_value;
8542 value += rel->r_addend;
8545 BFD_ASSERT (value < toc->size
8546 && toc->output_offset % 8 == 0);
8547 toc_ref_index = (value + toc->output_offset) / 8;
8548 if (r_type == R_PPC64_TLS
8549 || r_type == R_PPC64_TLSGD
8550 || r_type == R_PPC64_TLSLD)
8552 toc_ref[toc_ref_index] = 1;
8556 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8561 expecting_tls_get_addr = 2;
8564 case R_PPC64_TPREL64:
8568 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8573 tls_set = TLS_EXPLICIT;
8574 tls_clear = TLS_TPREL;
8579 case R_PPC64_DTPMOD64:
8583 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8585 if (rel + 1 < relend
8587 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8588 && rel[1].r_offset == rel->r_offset + 8)
8592 tls_set = TLS_EXPLICIT | TLS_GD;
8595 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8604 tls_set = TLS_EXPLICIT;
8615 if (!expecting_tls_get_addr
8616 || !sec->has_tls_get_addr_call)
8619 if (rel + 1 < relend
8620 && branch_reloc_hash_match (ibfd, rel + 1,
8622 htab->tls_get_addr_fd))
8624 if (expecting_tls_get_addr == 2)
8626 /* Check for toc tls entries. */
8627 unsigned char *toc_tls;
8630 retval = get_tls_mask (&toc_tls, NULL, NULL,
8635 if (toc_tls != NULL)
8637 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8638 found_tls_get_addr_arg = 1;
8640 toc_ref[toc_ref_index] = 1;
8646 if (expecting_tls_get_addr != 1)
8649 /* Uh oh, we didn't find the expected call. We
8650 could just mark this symbol to exclude it
8651 from tls optimization but it's safer to skip
8652 the entire optimization. */
8653 /* xgettext:c-format */
8654 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8655 "TLS optimization disabled\n"),
8656 ibfd, sec, rel->r_offset);
8661 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8663 struct plt_entry *ent;
8664 for (ent = htab->tls_get_addr->elf.plt.plist;
8667 if (ent->addend == 0)
8669 if (ent->plt.refcount > 0)
8671 ent->plt.refcount -= 1;
8672 expecting_tls_get_addr = 0;
8678 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8680 struct plt_entry *ent;
8681 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8684 if (ent->addend == 0)
8686 if (ent->plt.refcount > 0)
8687 ent->plt.refcount -= 1;
8695 if ((tls_set & TLS_EXPLICIT) == 0)
8697 struct got_entry *ent;
8699 /* Adjust got entry for this reloc. */
8703 ent = elf_local_got_ents (ibfd)[r_symndx];
8705 for (; ent != NULL; ent = ent->next)
8706 if (ent->addend == rel->r_addend
8707 && ent->owner == ibfd
8708 && ent->tls_type == tls_type)
8715 /* We managed to get rid of a got entry. */
8716 if (ent->got.refcount > 0)
8717 ent->got.refcount -= 1;
8722 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8723 we'll lose one or two dyn relocs. */
8724 if (!dec_dynrel_count (rel->r_info, sec, info,
8728 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8730 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8736 *tls_mask |= tls_set;
8737 *tls_mask &= ~tls_clear;
8740 if (elf_section_data (sec)->relocs != relstart)
8745 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8747 if (!info->keep_memory)
8750 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8754 if (toc_ref != NULL)
8756 htab->do_tls_opt = 1;
8760 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8761 the values of any global symbols in a toc section that has been
8762 edited. Globals in toc sections should be a rarity, so this function
8763 sets a flag if any are found in toc sections other than the one just
8764 edited, so that further hash table traversals can be avoided. */
8766 struct adjust_toc_info
8769 unsigned long *skip;
8770 bfd_boolean global_toc_syms;
8773 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8776 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8778 struct ppc_link_hash_entry *eh;
8779 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8782 if (h->root.type != bfd_link_hash_defined
8783 && h->root.type != bfd_link_hash_defweak)
8786 eh = (struct ppc_link_hash_entry *) h;
8787 if (eh->adjust_done)
8790 if (eh->elf.root.u.def.section == toc_inf->toc)
8792 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8793 i = toc_inf->toc->rawsize >> 3;
8795 i = eh->elf.root.u.def.value >> 3;
8797 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8800 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8803 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8804 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8807 eh->elf.root.u.def.value -= toc_inf->skip[i];
8808 eh->adjust_done = 1;
8810 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8811 toc_inf->global_toc_syms = TRUE;
8816 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8817 on a _LO variety toc/got reloc. */
8820 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8822 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8823 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8824 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8825 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8826 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8827 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8828 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8829 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8830 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8831 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8832 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8833 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8834 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8835 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8836 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8837 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
8838 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8839 /* Exclude lfqu by testing reloc. If relocs are ever
8840 defined for the reduced D field in psq_lu then those
8841 will need testing too. */
8842 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8843 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
8845 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
8846 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8847 /* Exclude stfqu. psq_stu as above for psq_lu. */
8848 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8849 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
8850 && (insn & 1) == 0));
8853 /* Examine all relocs referencing .toc sections in order to remove
8854 unused .toc entries. */
8857 ppc64_elf_edit_toc (struct bfd_link_info *info)
8860 struct adjust_toc_info toc_inf;
8861 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8863 htab->do_toc_opt = 1;
8864 toc_inf.global_toc_syms = TRUE;
8865 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8867 asection *toc, *sec;
8868 Elf_Internal_Shdr *symtab_hdr;
8869 Elf_Internal_Sym *local_syms;
8870 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8871 unsigned long *skip, *drop;
8872 unsigned char *used;
8873 unsigned char *keep, last, some_unused;
8875 if (!is_ppc64_elf (ibfd))
8878 toc = bfd_get_section_by_name (ibfd, ".toc");
8881 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8882 || discarded_section (toc))
8887 symtab_hdr = &elf_symtab_hdr (ibfd);
8889 /* Look at sections dropped from the final link. */
8892 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8894 if (sec->reloc_count == 0
8895 || !discarded_section (sec)
8896 || get_opd_info (sec)
8897 || (sec->flags & SEC_ALLOC) == 0
8898 || (sec->flags & SEC_DEBUGGING) != 0)
8901 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8902 if (relstart == NULL)
8905 /* Run through the relocs to see which toc entries might be
8907 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8909 enum elf_ppc64_reloc_type r_type;
8910 unsigned long r_symndx;
8912 struct elf_link_hash_entry *h;
8913 Elf_Internal_Sym *sym;
8916 r_type = ELF64_R_TYPE (rel->r_info);
8923 case R_PPC64_TOC16_LO:
8924 case R_PPC64_TOC16_HI:
8925 case R_PPC64_TOC16_HA:
8926 case R_PPC64_TOC16_DS:
8927 case R_PPC64_TOC16_LO_DS:
8931 r_symndx = ELF64_R_SYM (rel->r_info);
8932 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8940 val = h->root.u.def.value;
8942 val = sym->st_value;
8943 val += rel->r_addend;
8945 if (val >= toc->size)
8948 /* Anything in the toc ought to be aligned to 8 bytes.
8949 If not, don't mark as unused. */
8955 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8960 skip[val >> 3] = ref_from_discarded;
8963 if (elf_section_data (sec)->relocs != relstart)
8967 /* For largetoc loads of address constants, we can convert
8968 . addis rx,2,addr@got@ha
8969 . ld ry,addr@got@l(rx)
8971 . addis rx,2,addr@toc@ha
8972 . addi ry,rx,addr@toc@l
8973 when addr is within 2G of the toc pointer. This then means
8974 that the word storing "addr" in the toc is no longer needed. */
8976 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8977 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8978 && toc->reloc_count != 0)
8980 /* Read toc relocs. */
8981 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8983 if (toc_relocs == NULL)
8986 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8988 enum elf_ppc64_reloc_type r_type;
8989 unsigned long r_symndx;
8991 struct elf_link_hash_entry *h;
8992 Elf_Internal_Sym *sym;
8995 r_type = ELF64_R_TYPE (rel->r_info);
8996 if (r_type != R_PPC64_ADDR64)
8999 r_symndx = ELF64_R_SYM (rel->r_info);
9000 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9005 || sym_sec->output_section == NULL
9006 || discarded_section (sym_sec))
9009 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9014 if (h->type == STT_GNU_IFUNC)
9016 val = h->root.u.def.value;
9020 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9022 val = sym->st_value;
9024 val += rel->r_addend;
9025 val += sym_sec->output_section->vma + sym_sec->output_offset;
9027 /* We don't yet know the exact toc pointer value, but we
9028 know it will be somewhere in the toc section. Don't
9029 optimize if the difference from any possible toc
9030 pointer is outside [ff..f80008000, 7fff7fff]. */
9031 addr = toc->output_section->vma + TOC_BASE_OFF;
9032 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9035 addr = toc->output_section->vma + toc->output_section->rawsize;
9036 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9041 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9046 skip[rel->r_offset >> 3]
9047 |= can_optimize | ((rel - toc_relocs) << 2);
9054 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9058 if (local_syms != NULL
9059 && symtab_hdr->contents != (unsigned char *) local_syms)
9063 && elf_section_data (sec)->relocs != relstart)
9065 if (toc_relocs != NULL
9066 && elf_section_data (toc)->relocs != toc_relocs)
9073 /* Now check all kept sections that might reference the toc.
9074 Check the toc itself last. */
9075 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9078 sec = (sec == toc ? NULL
9079 : sec->next == NULL ? toc
9080 : sec->next == toc && toc->next ? toc->next
9085 if (sec->reloc_count == 0
9086 || discarded_section (sec)
9087 || get_opd_info (sec)
9088 || (sec->flags & SEC_ALLOC) == 0
9089 || (sec->flags & SEC_DEBUGGING) != 0)
9092 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9094 if (relstart == NULL)
9100 /* Mark toc entries referenced as used. */
9104 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9106 enum elf_ppc64_reloc_type r_type;
9107 unsigned long r_symndx;
9109 struct elf_link_hash_entry *h;
9110 Elf_Internal_Sym *sym;
9112 enum {no_check, check_lo, check_ha} insn_check;
9114 r_type = ELF64_R_TYPE (rel->r_info);
9118 insn_check = no_check;
9121 case R_PPC64_GOT_TLSLD16_HA:
9122 case R_PPC64_GOT_TLSGD16_HA:
9123 case R_PPC64_GOT_TPREL16_HA:
9124 case R_PPC64_GOT_DTPREL16_HA:
9125 case R_PPC64_GOT16_HA:
9126 case R_PPC64_TOC16_HA:
9127 insn_check = check_ha;
9130 case R_PPC64_GOT_TLSLD16_LO:
9131 case R_PPC64_GOT_TLSGD16_LO:
9132 case R_PPC64_GOT_TPREL16_LO_DS:
9133 case R_PPC64_GOT_DTPREL16_LO_DS:
9134 case R_PPC64_GOT16_LO:
9135 case R_PPC64_GOT16_LO_DS:
9136 case R_PPC64_TOC16_LO:
9137 case R_PPC64_TOC16_LO_DS:
9138 insn_check = check_lo;
9142 if (insn_check != no_check)
9144 bfd_vma off = rel->r_offset & ~3;
9145 unsigned char buf[4];
9148 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9153 insn = bfd_get_32 (ibfd, buf);
9154 if (insn_check == check_lo
9155 ? !ok_lo_toc_insn (insn, r_type)
9156 : ((insn & ((0x3f << 26) | 0x1f << 16))
9157 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9161 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9162 sprintf (str, "%#08x", insn);
9163 info->callbacks->einfo
9164 /* xgettext:c-format */
9165 (_("%H: toc optimization is not supported for"
9166 " %s instruction.\n"),
9167 ibfd, sec, rel->r_offset & ~3, str);
9174 case R_PPC64_TOC16_LO:
9175 case R_PPC64_TOC16_HI:
9176 case R_PPC64_TOC16_HA:
9177 case R_PPC64_TOC16_DS:
9178 case R_PPC64_TOC16_LO_DS:
9179 /* In case we're taking addresses of toc entries. */
9180 case R_PPC64_ADDR64:
9187 r_symndx = ELF64_R_SYM (rel->r_info);
9188 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9199 val = h->root.u.def.value;
9201 val = sym->st_value;
9202 val += rel->r_addend;
9204 if (val >= toc->size)
9207 if ((skip[val >> 3] & can_optimize) != 0)
9214 case R_PPC64_TOC16_HA:
9217 case R_PPC64_TOC16_LO_DS:
9218 off = rel->r_offset;
9219 off += (bfd_big_endian (ibfd) ? -2 : 3);
9220 if (!bfd_get_section_contents (ibfd, sec, &opc,
9226 if ((opc & (0x3f << 2)) == (58u << 2))
9231 /* Wrong sort of reloc, or not a ld. We may
9232 as well clear ref_from_discarded too. */
9239 /* For the toc section, we only mark as used if this
9240 entry itself isn't unused. */
9241 else if ((used[rel->r_offset >> 3]
9242 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9245 /* Do all the relocs again, to catch reference
9254 if (elf_section_data (sec)->relocs != relstart)
9258 /* Merge the used and skip arrays. Assume that TOC
9259 doublewords not appearing as either used or unused belong
9260 to an entry more than one doubleword in size. */
9261 for (drop = skip, keep = used, last = 0, some_unused = 0;
9262 drop < skip + (toc->size + 7) / 8;
9267 *drop &= ~ref_from_discarded;
9268 if ((*drop & can_optimize) != 0)
9272 else if ((*drop & ref_from_discarded) != 0)
9275 last = ref_from_discarded;
9285 bfd_byte *contents, *src;
9287 Elf_Internal_Sym *sym;
9288 bfd_boolean local_toc_syms = FALSE;
9290 /* Shuffle the toc contents, and at the same time convert the
9291 skip array from booleans into offsets. */
9292 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9295 elf_section_data (toc)->this_hdr.contents = contents;
9297 for (src = contents, off = 0, drop = skip;
9298 src < contents + toc->size;
9301 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9306 memcpy (src - off, src, 8);
9310 toc->rawsize = toc->size;
9311 toc->size = src - contents - off;
9313 /* Adjust addends for relocs against the toc section sym,
9314 and optimize any accesses we can. */
9315 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9317 if (sec->reloc_count == 0
9318 || discarded_section (sec))
9321 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9323 if (relstart == NULL)
9326 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9328 enum elf_ppc64_reloc_type r_type;
9329 unsigned long r_symndx;
9331 struct elf_link_hash_entry *h;
9334 r_type = ELF64_R_TYPE (rel->r_info);
9341 case R_PPC64_TOC16_LO:
9342 case R_PPC64_TOC16_HI:
9343 case R_PPC64_TOC16_HA:
9344 case R_PPC64_TOC16_DS:
9345 case R_PPC64_TOC16_LO_DS:
9346 case R_PPC64_ADDR64:
9350 r_symndx = ELF64_R_SYM (rel->r_info);
9351 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9359 val = h->root.u.def.value;
9362 val = sym->st_value;
9364 local_toc_syms = TRUE;
9367 val += rel->r_addend;
9369 if (val > toc->rawsize)
9371 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9373 else if ((skip[val >> 3] & can_optimize) != 0)
9375 Elf_Internal_Rela *tocrel
9376 = toc_relocs + (skip[val >> 3] >> 2);
9377 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9381 case R_PPC64_TOC16_HA:
9382 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9385 case R_PPC64_TOC16_LO_DS:
9386 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9390 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9392 info->callbacks->einfo
9393 /* xgettext:c-format */
9394 (_("%H: %s references "
9395 "optimized away TOC entry\n"),
9396 ibfd, sec, rel->r_offset,
9397 ppc64_elf_howto_table[r_type]->name);
9398 bfd_set_error (bfd_error_bad_value);
9401 rel->r_addend = tocrel->r_addend;
9402 elf_section_data (sec)->relocs = relstart;
9406 if (h != NULL || sym->st_value != 0)
9409 rel->r_addend -= skip[val >> 3];
9410 elf_section_data (sec)->relocs = relstart;
9413 if (elf_section_data (sec)->relocs != relstart)
9417 /* We shouldn't have local or global symbols defined in the TOC,
9418 but handle them anyway. */
9419 if (local_syms != NULL)
9420 for (sym = local_syms;
9421 sym < local_syms + symtab_hdr->sh_info;
9423 if (sym->st_value != 0
9424 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9428 if (sym->st_value > toc->rawsize)
9429 i = toc->rawsize >> 3;
9431 i = sym->st_value >> 3;
9433 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9437 (_("%s defined on removed toc entry"),
9438 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9441 while ((skip[i] & (ref_from_discarded | can_optimize)));
9442 sym->st_value = (bfd_vma) i << 3;
9445 sym->st_value -= skip[i];
9446 symtab_hdr->contents = (unsigned char *) local_syms;
9449 /* Adjust any global syms defined in this toc input section. */
9450 if (toc_inf.global_toc_syms)
9453 toc_inf.skip = skip;
9454 toc_inf.global_toc_syms = FALSE;
9455 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9459 if (toc->reloc_count != 0)
9461 Elf_Internal_Shdr *rel_hdr;
9462 Elf_Internal_Rela *wrel;
9465 /* Remove unused toc relocs, and adjust those we keep. */
9466 if (toc_relocs == NULL)
9467 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9469 if (toc_relocs == NULL)
9473 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9474 if ((skip[rel->r_offset >> 3]
9475 & (ref_from_discarded | can_optimize)) == 0)
9477 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9478 wrel->r_info = rel->r_info;
9479 wrel->r_addend = rel->r_addend;
9482 else if (!dec_dynrel_count (rel->r_info, toc, info,
9483 &local_syms, NULL, NULL))
9486 elf_section_data (toc)->relocs = toc_relocs;
9487 toc->reloc_count = wrel - toc_relocs;
9488 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9489 sz = rel_hdr->sh_entsize;
9490 rel_hdr->sh_size = toc->reloc_count * sz;
9493 else if (toc_relocs != NULL
9494 && elf_section_data (toc)->relocs != toc_relocs)
9497 if (local_syms != NULL
9498 && symtab_hdr->contents != (unsigned char *) local_syms)
9500 if (!info->keep_memory)
9503 symtab_hdr->contents = (unsigned char *) local_syms;
9511 /* Return true iff input section I references the TOC using
9512 instructions limited to +/-32k offsets. */
9515 ppc64_elf_has_small_toc_reloc (asection *i)
9517 return (is_ppc64_elf (i->owner)
9518 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9521 /* Allocate space for one GOT entry. */
9524 allocate_got (struct elf_link_hash_entry *h,
9525 struct bfd_link_info *info,
9526 struct got_entry *gent)
9528 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9529 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9530 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9532 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9533 ? 2 : 1) * sizeof (Elf64_External_Rela);
9534 asection *got = ppc64_elf_tdata (gent->owner)->got;
9536 gent->got.offset = got->size;
9537 got->size += entsize;
9539 if (h->type == STT_GNU_IFUNC)
9541 htab->elf.irelplt->size += rentsize;
9542 htab->got_reli_size += rentsize;
9544 else if (((bfd_link_pic (info)
9545 && !((gent->tls_type & TLS_TPREL) != 0
9546 && bfd_link_executable (info)
9547 && SYMBOL_REFERENCES_LOCAL (info, h)))
9548 || (htab->elf.dynamic_sections_created
9550 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9551 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9553 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9554 relgot->size += rentsize;
9558 /* This function merges got entries in the same toc group. */
9561 merge_got_entries (struct got_entry **pent)
9563 struct got_entry *ent, *ent2;
9565 for (ent = *pent; ent != NULL; ent = ent->next)
9566 if (!ent->is_indirect)
9567 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9568 if (!ent2->is_indirect
9569 && ent2->addend == ent->addend
9570 && ent2->tls_type == ent->tls_type
9571 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9573 ent2->is_indirect = TRUE;
9574 ent2->got.ent = ent;
9578 /* If H is undefined, make it dynamic if that makes sense. */
9581 ensure_undef_dynamic (struct bfd_link_info *info,
9582 struct elf_link_hash_entry *h)
9584 struct elf_link_hash_table *htab = elf_hash_table (info);
9586 if (htab->dynamic_sections_created
9587 && ((info->dynamic_undefined_weak != 0
9588 && h->root.type == bfd_link_hash_undefweak)
9589 || h->root.type == bfd_link_hash_undefined)
9592 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9593 return bfd_elf_link_record_dynamic_symbol (info, h);
9597 /* Allocate space in .plt, .got and associated reloc sections for
9601 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9603 struct bfd_link_info *info;
9604 struct ppc_link_hash_table *htab;
9606 struct ppc_link_hash_entry *eh;
9607 struct got_entry **pgent, *gent;
9609 if (h->root.type == bfd_link_hash_indirect)
9612 info = (struct bfd_link_info *) inf;
9613 htab = ppc_hash_table (info);
9617 eh = (struct ppc_link_hash_entry *) h;
9618 /* Run through the TLS GD got entries first if we're changing them
9620 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9621 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9622 if (gent->got.refcount > 0
9623 && (gent->tls_type & TLS_GD) != 0)
9625 /* This was a GD entry that has been converted to TPREL. If
9626 there happens to be a TPREL entry we can use that one. */
9627 struct got_entry *ent;
9628 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9629 if (ent->got.refcount > 0
9630 && (ent->tls_type & TLS_TPREL) != 0
9631 && ent->addend == gent->addend
9632 && ent->owner == gent->owner)
9634 gent->got.refcount = 0;
9638 /* If not, then we'll be using our own TPREL entry. */
9639 if (gent->got.refcount != 0)
9640 gent->tls_type = TLS_TLS | TLS_TPREL;
9643 /* Remove any list entry that won't generate a word in the GOT before
9644 we call merge_got_entries. Otherwise we risk merging to empty
9646 pgent = &h->got.glist;
9647 while ((gent = *pgent) != NULL)
9648 if (gent->got.refcount > 0)
9650 if ((gent->tls_type & TLS_LD) != 0
9653 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9654 *pgent = gent->next;
9657 pgent = &gent->next;
9660 *pgent = gent->next;
9662 if (!htab->do_multi_toc)
9663 merge_got_entries (&h->got.glist);
9665 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9666 if (!gent->is_indirect)
9668 /* Make sure this symbol is output as a dynamic symbol. */
9669 if (!ensure_undef_dynamic (info, h))
9672 if (!is_ppc64_elf (gent->owner))
9675 allocate_got (h, info, gent);
9678 /* If no dynamic sections we can't have dynamic relocs, except for
9679 IFUNCs which are handled even in static executables. */
9680 if (!htab->elf.dynamic_sections_created
9681 && h->type != STT_GNU_IFUNC)
9682 eh->dyn_relocs = NULL;
9684 /* Discard relocs on undefined symbols that must be local. */
9685 else if (h->root.type == bfd_link_hash_undefined
9686 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9687 eh->dyn_relocs = NULL;
9689 /* Also discard relocs on undefined weak syms with non-default
9690 visibility, or when dynamic_undefined_weak says so. */
9691 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9692 eh->dyn_relocs = NULL;
9694 if (eh->dyn_relocs != NULL)
9696 struct elf_dyn_relocs *p, **pp;
9698 /* In the shared -Bsymbolic case, discard space allocated for
9699 dynamic pc-relative relocs against symbols which turn out to
9700 be defined in regular objects. For the normal shared case,
9701 discard space for relocs that have become local due to symbol
9702 visibility changes. */
9704 if (bfd_link_pic (info))
9706 /* Relocs that use pc_count are those that appear on a call
9707 insn, or certain REL relocs (see must_be_dyn_reloc) that
9708 can be generated via assembly. We want calls to
9709 protected symbols to resolve directly to the function
9710 rather than going via the plt. If people want function
9711 pointer comparisons to work as expected then they should
9712 avoid writing weird assembly. */
9713 if (SYMBOL_CALLS_LOCAL (info, h))
9715 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9717 p->count -= p->pc_count;
9726 if (eh->dyn_relocs != NULL)
9728 /* Make sure this symbol is output as a dynamic symbol. */
9729 if (!ensure_undef_dynamic (info, h))
9733 else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC)
9735 /* For the non-pic case, discard space for relocs against
9736 symbols which turn out to need copy relocs or are not
9738 if (h->dynamic_adjusted
9740 && !ELF_COMMON_DEF_P (h))
9742 /* Make sure this symbol is output as a dynamic symbol. */
9743 if (!ensure_undef_dynamic (info, h))
9746 if (h->dynindx == -1)
9747 eh->dyn_relocs = NULL;
9750 eh->dyn_relocs = NULL;
9753 /* Finally, allocate space. */
9754 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9756 asection *sreloc = elf_section_data (p->sec)->sreloc;
9757 if (eh->elf.type == STT_GNU_IFUNC)
9758 sreloc = htab->elf.irelplt;
9759 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9763 if ((htab->elf.dynamic_sections_created
9764 && h->dynindx != -1)
9765 || h->type == STT_GNU_IFUNC)
9767 struct plt_entry *pent;
9768 bfd_boolean doneone = FALSE;
9769 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9770 if (pent->plt.refcount > 0)
9772 if (!htab->elf.dynamic_sections_created
9773 || h->dynindx == -1)
9776 pent->plt.offset = s->size;
9777 s->size += PLT_ENTRY_SIZE (htab);
9778 s = htab->elf.irelplt;
9782 /* If this is the first .plt entry, make room for the special
9786 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9788 pent->plt.offset = s->size;
9790 /* Make room for this entry. */
9791 s->size += PLT_ENTRY_SIZE (htab);
9793 /* Make room for the .glink code. */
9796 s->size += GLINK_CALL_STUB_SIZE;
9799 /* We need bigger stubs past index 32767. */
9800 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9807 /* We also need to make an entry in the .rela.plt section. */
9808 s = htab->elf.srelplt;
9810 s->size += sizeof (Elf64_External_Rela);
9814 pent->plt.offset = (bfd_vma) -1;
9817 h->plt.plist = NULL;
9823 h->plt.plist = NULL;
9830 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9831 to set up space for global entry stubs. These are put in glink,
9832 after the branch table. */
9835 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9837 struct bfd_link_info *info;
9838 struct ppc_link_hash_table *htab;
9839 struct plt_entry *pent;
9842 if (h->root.type == bfd_link_hash_indirect)
9845 if (!h->pointer_equality_needed)
9852 htab = ppc_hash_table (info);
9857 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9858 if (pent->plt.offset != (bfd_vma) -1
9859 && pent->addend == 0)
9861 /* For ELFv2, if this symbol is not defined in a regular file
9862 and we are not generating a shared library or pie, then we
9863 need to define the symbol in the executable on a call stub.
9864 This is to avoid text relocations. */
9865 s->size = (s->size + 15) & -16;
9866 h->root.type = bfd_link_hash_defined;
9867 h->root.u.def.section = s;
9868 h->root.u.def.value = s->size;
9875 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9876 read-only sections. */
9879 maybe_set_textrel (struct elf_link_hash_entry *h, void *inf)
9883 if (h->root.type == bfd_link_hash_indirect)
9886 sec = readonly_dynrelocs (h);
9889 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9891 info->flags |= DF_TEXTREL;
9892 info->callbacks->minfo
9893 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
9894 sec->owner, h->root.root.string, sec);
9896 /* Not an error, just cut short the traversal. */
9902 /* Set the sizes of the dynamic sections. */
9905 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9906 struct bfd_link_info *info)
9908 struct ppc_link_hash_table *htab;
9913 struct got_entry *first_tlsld;
9915 htab = ppc_hash_table (info);
9919 dynobj = htab->elf.dynobj;
9923 if (htab->elf.dynamic_sections_created)
9925 /* Set the contents of the .interp section to the interpreter. */
9926 if (bfd_link_executable (info) && !info->nointerp)
9928 s = bfd_get_linker_section (dynobj, ".interp");
9931 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9932 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9936 /* Set up .got offsets for local syms, and space for local dynamic
9938 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9940 struct got_entry **lgot_ents;
9941 struct got_entry **end_lgot_ents;
9942 struct plt_entry **local_plt;
9943 struct plt_entry **end_local_plt;
9944 unsigned char *lgot_masks;
9945 bfd_size_type locsymcount;
9946 Elf_Internal_Shdr *symtab_hdr;
9948 if (!is_ppc64_elf (ibfd))
9951 for (s = ibfd->sections; s != NULL; s = s->next)
9953 struct ppc_dyn_relocs *p;
9955 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9957 if (!bfd_is_abs_section (p->sec)
9958 && bfd_is_abs_section (p->sec->output_section))
9960 /* Input section has been discarded, either because
9961 it is a copy of a linkonce section or due to
9962 linker script /DISCARD/, so we'll be discarding
9965 else if (p->count != 0)
9967 asection *srel = elf_section_data (p->sec)->sreloc;
9969 srel = htab->elf.irelplt;
9970 srel->size += p->count * sizeof (Elf64_External_Rela);
9971 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9972 info->flags |= DF_TEXTREL;
9977 lgot_ents = elf_local_got_ents (ibfd);
9981 symtab_hdr = &elf_symtab_hdr (ibfd);
9982 locsymcount = symtab_hdr->sh_info;
9983 end_lgot_ents = lgot_ents + locsymcount;
9984 local_plt = (struct plt_entry **) end_lgot_ents;
9985 end_local_plt = local_plt + locsymcount;
9986 lgot_masks = (unsigned char *) end_local_plt;
9987 s = ppc64_elf_tdata (ibfd)->got;
9988 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9990 struct got_entry **pent, *ent;
9993 while ((ent = *pent) != NULL)
9994 if (ent->got.refcount > 0)
9996 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9998 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10003 unsigned int ent_size = 8;
10004 unsigned int rel_size = sizeof (Elf64_External_Rela);
10006 ent->got.offset = s->size;
10007 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10012 s->size += ent_size;
10013 if ((*lgot_masks & PLT_IFUNC) != 0)
10015 htab->elf.irelplt->size += rel_size;
10016 htab->got_reli_size += rel_size;
10018 else if (bfd_link_pic (info)
10019 && !((ent->tls_type & TLS_TPREL) != 0
10020 && bfd_link_executable (info)))
10022 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10023 srel->size += rel_size;
10032 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10033 for (; local_plt < end_local_plt; ++local_plt)
10035 struct plt_entry *ent;
10037 for (ent = *local_plt; ent != NULL; ent = ent->next)
10038 if (ent->plt.refcount > 0)
10040 s = htab->elf.iplt;
10041 ent->plt.offset = s->size;
10042 s->size += PLT_ENTRY_SIZE (htab);
10044 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10047 ent->plt.offset = (bfd_vma) -1;
10051 /* Allocate global sym .plt and .got entries, and space for global
10052 sym dynamic relocs. */
10053 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10054 /* Stash the end of glink branch table. */
10055 if (htab->glink != NULL)
10056 htab->glink->rawsize = htab->glink->size;
10058 if (!htab->opd_abi && !bfd_link_pic (info))
10059 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10061 first_tlsld = NULL;
10062 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10064 struct got_entry *ent;
10066 if (!is_ppc64_elf (ibfd))
10069 ent = ppc64_tlsld_got (ibfd);
10070 if (ent->got.refcount > 0)
10072 if (!htab->do_multi_toc && first_tlsld != NULL)
10074 ent->is_indirect = TRUE;
10075 ent->got.ent = first_tlsld;
10079 if (first_tlsld == NULL)
10081 s = ppc64_elf_tdata (ibfd)->got;
10082 ent->got.offset = s->size;
10085 if (bfd_link_pic (info))
10087 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10088 srel->size += sizeof (Elf64_External_Rela);
10093 ent->got.offset = (bfd_vma) -1;
10096 /* We now have determined the sizes of the various dynamic sections.
10097 Allocate memory for them. */
10099 for (s = dynobj->sections; s != NULL; s = s->next)
10101 if ((s->flags & SEC_LINKER_CREATED) == 0)
10104 if (s == htab->brlt || s == htab->relbrlt)
10105 /* These haven't been allocated yet; don't strip. */
10107 else if (s == htab->elf.sgot
10108 || s == htab->elf.splt
10109 || s == htab->elf.iplt
10110 || s == htab->glink
10111 || s == htab->elf.sdynbss
10112 || s == htab->elf.sdynrelro)
10114 /* Strip this section if we don't need it; see the
10117 else if (s == htab->glink_eh_frame)
10119 if (!bfd_is_abs_section (s->output_section))
10120 /* Not sized yet. */
10123 else if (CONST_STRNEQ (s->name, ".rela"))
10127 if (s != htab->elf.srelplt)
10130 /* We use the reloc_count field as a counter if we need
10131 to copy relocs into the output file. */
10132 s->reloc_count = 0;
10137 /* It's not one of our sections, so don't allocate space. */
10143 /* If we don't need this section, strip it from the
10144 output file. This is mostly to handle .rela.bss and
10145 .rela.plt. We must create both sections in
10146 create_dynamic_sections, because they must be created
10147 before the linker maps input sections to output
10148 sections. The linker does that before
10149 adjust_dynamic_symbol is called, and it is that
10150 function which decides whether anything needs to go
10151 into these sections. */
10152 s->flags |= SEC_EXCLUDE;
10156 if (bfd_is_abs_section (s->output_section))
10157 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10160 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10163 /* Allocate memory for the section contents. We use bfd_zalloc
10164 here in case unused entries are not reclaimed before the
10165 section's contents are written out. This should not happen,
10166 but this way if it does we get a R_PPC64_NONE reloc in .rela
10167 sections instead of garbage.
10168 We also rely on the section contents being zero when writing
10169 the GOT and .dynrelro. */
10170 s->contents = bfd_zalloc (dynobj, s->size);
10171 if (s->contents == NULL)
10175 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10177 if (!is_ppc64_elf (ibfd))
10180 s = ppc64_elf_tdata (ibfd)->got;
10181 if (s != NULL && s != htab->elf.sgot)
10184 s->flags |= SEC_EXCLUDE;
10187 s->contents = bfd_zalloc (ibfd, s->size);
10188 if (s->contents == NULL)
10192 s = ppc64_elf_tdata (ibfd)->relgot;
10196 s->flags |= SEC_EXCLUDE;
10199 s->contents = bfd_zalloc (ibfd, s->size);
10200 if (s->contents == NULL)
10203 s->reloc_count = 0;
10208 if (htab->elf.dynamic_sections_created)
10210 bfd_boolean tls_opt;
10212 /* Add some entries to the .dynamic section. We fill in the
10213 values later, in ppc64_elf_finish_dynamic_sections, but we
10214 must add the entries now so that we get the correct size for
10215 the .dynamic section. The DT_DEBUG entry is filled in by the
10216 dynamic linker and used by the debugger. */
10217 #define add_dynamic_entry(TAG, VAL) \
10218 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10220 if (bfd_link_executable (info))
10222 if (!add_dynamic_entry (DT_DEBUG, 0))
10226 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10228 if (!add_dynamic_entry (DT_PLTGOT, 0)
10229 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10230 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10231 || !add_dynamic_entry (DT_JMPREL, 0)
10232 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10236 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10238 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10239 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10243 tls_opt = (htab->params->tls_get_addr_opt
10244 && htab->tls_get_addr_fd != NULL
10245 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10246 if (tls_opt || !htab->opd_abi)
10248 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10254 if (!add_dynamic_entry (DT_RELA, 0)
10255 || !add_dynamic_entry (DT_RELASZ, 0)
10256 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10259 /* If any dynamic relocs apply to a read-only section,
10260 then we need a DT_TEXTREL entry. */
10261 if ((info->flags & DF_TEXTREL) == 0)
10262 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10264 if ((info->flags & DF_TEXTREL) != 0)
10266 if (!add_dynamic_entry (DT_TEXTREL, 0))
10271 #undef add_dynamic_entry
10276 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10279 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10281 if (h->plt.plist != NULL
10283 && !h->pointer_equality_needed)
10286 return _bfd_elf_hash_symbol (h);
10289 /* Determine the type of stub needed, if any, for a call. */
10291 static inline enum ppc_stub_type
10292 ppc_type_of_stub (asection *input_sec,
10293 const Elf_Internal_Rela *rel,
10294 struct ppc_link_hash_entry **hash,
10295 struct plt_entry **plt_ent,
10296 bfd_vma destination,
10297 unsigned long local_off)
10299 struct ppc_link_hash_entry *h = *hash;
10301 bfd_vma branch_offset;
10302 bfd_vma max_branch_offset;
10303 enum elf_ppc64_reloc_type r_type;
10307 struct plt_entry *ent;
10308 struct ppc_link_hash_entry *fdh = h;
10310 && h->oh->is_func_descriptor)
10312 fdh = ppc_follow_link (h->oh);
10316 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10317 if (ent->addend == rel->r_addend
10318 && ent->plt.offset != (bfd_vma) -1)
10321 return ppc_stub_plt_call;
10324 /* Here, we know we don't have a plt entry. If we don't have a
10325 either a defined function descriptor or a defined entry symbol
10326 in a regular object file, then it is pointless trying to make
10327 any other type of stub. */
10328 if (!is_static_defined (&fdh->elf)
10329 && !is_static_defined (&h->elf))
10330 return ppc_stub_none;
10332 else if (elf_local_got_ents (input_sec->owner) != NULL)
10334 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10335 struct plt_entry **local_plt = (struct plt_entry **)
10336 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10337 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10339 if (local_plt[r_symndx] != NULL)
10341 struct plt_entry *ent;
10343 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10344 if (ent->addend == rel->r_addend
10345 && ent->plt.offset != (bfd_vma) -1)
10348 return ppc_stub_plt_call;
10353 /* Determine where the call point is. */
10354 location = (input_sec->output_offset
10355 + input_sec->output_section->vma
10358 branch_offset = destination - location;
10359 r_type = ELF64_R_TYPE (rel->r_info);
10361 /* Determine if a long branch stub is needed. */
10362 max_branch_offset = 1 << 25;
10363 if (r_type != R_PPC64_REL24)
10364 max_branch_offset = 1 << 15;
10366 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10367 /* We need a stub. Figure out whether a long_branch or plt_branch
10368 is needed later. */
10369 return ppc_stub_long_branch;
10371 return ppc_stub_none;
10374 /* With power7 weakly ordered memory model, it is possible for ld.so
10375 to update a plt entry in one thread and have another thread see a
10376 stale zero toc entry. To avoid this we need some sort of acquire
10377 barrier in the call stub. One solution is to make the load of the
10378 toc word seem to appear to depend on the load of the function entry
10379 word. Another solution is to test for r2 being zero, and branch to
10380 the appropriate glink entry if so.
10382 . fake dep barrier compare
10383 . ld 12,xxx(2) ld 12,xxx(2)
10384 . mtctr 12 mtctr 12
10385 . xor 11,12,12 ld 2,xxx+8(2)
10386 . add 2,2,11 cmpldi 2,0
10387 . ld 2,xxx+8(2) bnectr+
10388 . bctr b <glink_entry>
10390 The solution involving the compare turns out to be faster, so
10391 that's what we use unless the branch won't reach. */
10393 #define ALWAYS_USE_FAKE_DEP 0
10394 #define ALWAYS_EMIT_R2SAVE 0
10396 #define PPC_LO(v) ((v) & 0xffff)
10397 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10398 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10400 static inline unsigned int
10401 plt_stub_size (struct ppc_link_hash_table *htab,
10402 struct ppc_stub_hash_entry *stub_entry,
10405 unsigned size = 12;
10407 if (ALWAYS_EMIT_R2SAVE
10408 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10410 if (PPC_HA (off) != 0)
10415 if (htab->params->plt_static_chain)
10417 if (htab->params->plt_thread_safe
10418 && htab->elf.dynamic_sections_created
10419 && stub_entry->h != NULL
10420 && stub_entry->h->elf.dynindx != -1)
10422 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10425 if (stub_entry->h != NULL
10426 && (stub_entry->h == htab->tls_get_addr_fd
10427 || stub_entry->h == htab->tls_get_addr)
10428 && htab->params->tls_get_addr_opt)
10431 if (ALWAYS_EMIT_R2SAVE
10432 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10438 /* Depending on the sign of plt_stub_align:
10439 If positive, return the padding to align to a 2**plt_stub_align
10441 If negative, if this stub would cross fewer 2**plt_stub_align
10442 boundaries if we align, then return the padding needed to do so. */
10444 static inline unsigned int
10445 plt_stub_pad (struct ppc_link_hash_table *htab,
10446 struct ppc_stub_hash_entry *stub_entry,
10450 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10451 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10453 if (htab->params->plt_stub_align >= 0)
10455 stub_align = 1 << htab->params->plt_stub_align;
10456 if ((stub_off & (stub_align - 1)) != 0)
10457 return stub_align - (stub_off & (stub_align - 1));
10461 stub_align = 1 << -htab->params->plt_stub_align;
10462 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10463 > ((stub_size - 1) & -stub_align))
10464 return stub_align - (stub_off & (stub_align - 1));
10468 /* Build a .plt call stub. */
10470 static inline bfd_byte *
10471 build_plt_stub (struct ppc_link_hash_table *htab,
10472 struct ppc_stub_hash_entry *stub_entry,
10473 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10475 bfd *obfd = htab->params->stub_bfd;
10476 bfd_boolean plt_load_toc = htab->opd_abi;
10477 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10478 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10479 && htab->elf.dynamic_sections_created
10480 && stub_entry->h != NULL
10481 && stub_entry->h->elf.dynindx != -1);
10482 bfd_boolean use_fake_dep = plt_thread_safe;
10483 bfd_vma cmp_branch_off = 0;
10485 if (!ALWAYS_USE_FAKE_DEP
10488 && !((stub_entry->h == htab->tls_get_addr_fd
10489 || stub_entry->h == htab->tls_get_addr)
10490 && htab->params->tls_get_addr_opt))
10492 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10493 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10494 / PLT_ENTRY_SIZE (htab));
10495 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10498 if (pltindex > 32768)
10499 glinkoff += (pltindex - 32768) * 4;
10501 + htab->glink->output_offset
10502 + htab->glink->output_section->vma);
10503 from = (p - stub_entry->group->stub_sec->contents
10504 + 4 * (ALWAYS_EMIT_R2SAVE
10505 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10506 + 4 * (PPC_HA (offset) != 0)
10507 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10508 != PPC_HA (offset))
10509 + 4 * (plt_static_chain != 0)
10511 + stub_entry->group->stub_sec->output_offset
10512 + stub_entry->group->stub_sec->output_section->vma);
10513 cmp_branch_off = to - from;
10514 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10517 if (PPC_HA (offset) != 0)
10521 if (ALWAYS_EMIT_R2SAVE
10522 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10523 r[0].r_offset += 4;
10524 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10525 r[1].r_offset = r[0].r_offset + 4;
10526 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10527 r[1].r_addend = r[0].r_addend;
10530 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10532 r[2].r_offset = r[1].r_offset + 4;
10533 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10534 r[2].r_addend = r[0].r_addend;
10538 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10539 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10540 r[2].r_addend = r[0].r_addend + 8;
10541 if (plt_static_chain)
10543 r[3].r_offset = r[2].r_offset + 4;
10544 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10545 r[3].r_addend = r[0].r_addend + 16;
10550 if (ALWAYS_EMIT_R2SAVE
10551 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10552 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10555 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10556 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10560 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10561 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10564 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10566 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10569 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10574 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10575 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10577 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10578 if (plt_static_chain)
10579 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10586 if (ALWAYS_EMIT_R2SAVE
10587 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10588 r[0].r_offset += 4;
10589 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10592 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10594 r[1].r_offset = r[0].r_offset + 4;
10595 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10596 r[1].r_addend = r[0].r_addend;
10600 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10601 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10602 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10603 if (plt_static_chain)
10605 r[2].r_offset = r[1].r_offset + 4;
10606 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10607 r[2].r_addend = r[0].r_addend + 8;
10612 if (ALWAYS_EMIT_R2SAVE
10613 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10614 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10615 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10617 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10619 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10622 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10627 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10628 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10630 if (plt_static_chain)
10631 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10632 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10635 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10637 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10638 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10639 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10642 bfd_put_32 (obfd, BCTR, p), p += 4;
10646 /* Build a special .plt call stub for __tls_get_addr. */
10648 #define LD_R11_0R3 0xe9630000
10649 #define LD_R12_0R3 0xe9830000
10650 #define MR_R0_R3 0x7c601b78
10651 #define CMPDI_R11_0 0x2c2b0000
10652 #define ADD_R3_R12_R13 0x7c6c6a14
10653 #define BEQLR 0x4d820020
10654 #define MR_R3_R0 0x7c030378
10655 #define STD_R11_0R1 0xf9610000
10656 #define BCTRL 0x4e800421
10657 #define LD_R11_0R1 0xe9610000
10658 #define MTLR_R11 0x7d6803a6
10660 static inline bfd_byte *
10661 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10662 struct ppc_stub_hash_entry *stub_entry,
10663 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10665 bfd *obfd = htab->params->stub_bfd;
10667 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10668 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10669 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10670 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10671 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10672 bfd_put_32 (obfd, BEQLR, p), p += 4;
10673 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10675 r[0].r_offset += 7 * 4;
10676 if (!ALWAYS_EMIT_R2SAVE
10677 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10678 return build_plt_stub (htab, stub_entry, p, offset, r);
10680 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10681 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10684 r[0].r_offset += 2 * 4;
10685 p = build_plt_stub (htab, stub_entry, p, offset, r);
10686 bfd_put_32 (obfd, BCTRL, p - 4);
10688 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10689 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10690 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10691 bfd_put_32 (obfd, BLR, p), p += 4;
10696 static Elf_Internal_Rela *
10697 get_relocs (asection *sec, int count)
10699 Elf_Internal_Rela *relocs;
10700 struct bfd_elf_section_data *elfsec_data;
10702 elfsec_data = elf_section_data (sec);
10703 relocs = elfsec_data->relocs;
10704 if (relocs == NULL)
10706 bfd_size_type relsize;
10707 relsize = sec->reloc_count * sizeof (*relocs);
10708 relocs = bfd_alloc (sec->owner, relsize);
10709 if (relocs == NULL)
10711 elfsec_data->relocs = relocs;
10712 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10713 sizeof (Elf_Internal_Shdr));
10714 if (elfsec_data->rela.hdr == NULL)
10716 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10717 * sizeof (Elf64_External_Rela));
10718 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10719 sec->reloc_count = 0;
10721 relocs += sec->reloc_count;
10722 sec->reloc_count += count;
10727 get_r2off (struct bfd_link_info *info,
10728 struct ppc_stub_hash_entry *stub_entry)
10730 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10731 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10735 /* Support linking -R objects. Get the toc pointer from the
10738 if (!htab->opd_abi)
10740 asection *opd = stub_entry->h->elf.root.u.def.section;
10741 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10743 if (strcmp (opd->name, ".opd") != 0
10744 || opd->reloc_count != 0)
10746 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10747 stub_entry->h->elf.root.root.string);
10748 bfd_set_error (bfd_error_bad_value);
10749 return (bfd_vma) -1;
10751 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10752 return (bfd_vma) -1;
10753 r2off = bfd_get_64 (opd->owner, buf);
10754 r2off -= elf_gp (info->output_bfd);
10756 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10761 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10763 struct ppc_stub_hash_entry *stub_entry;
10764 struct ppc_branch_hash_entry *br_entry;
10765 struct bfd_link_info *info;
10766 struct ppc_link_hash_table *htab;
10771 Elf_Internal_Rela *r;
10774 /* Massage our args to the form they really have. */
10775 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10778 htab = ppc_hash_table (info);
10782 /* Make a note of the offset within the stubs for this entry. */
10783 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10784 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10786 htab->stub_count[stub_entry->stub_type - 1] += 1;
10787 switch (stub_entry->stub_type)
10789 case ppc_stub_long_branch:
10790 case ppc_stub_long_branch_r2off:
10791 /* Branches are relative. This is where we are going to. */
10792 dest = (stub_entry->target_value
10793 + stub_entry->target_section->output_offset
10794 + stub_entry->target_section->output_section->vma);
10795 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10798 /* And this is where we are coming from. */
10799 off -= (stub_entry->stub_offset
10800 + stub_entry->group->stub_sec->output_offset
10801 + stub_entry->group->stub_sec->output_section->vma);
10804 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10806 bfd_vma r2off = get_r2off (info, stub_entry);
10808 if (r2off == (bfd_vma) -1)
10810 htab->stub_error = TRUE;
10813 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10816 if (PPC_HA (r2off) != 0)
10818 bfd_put_32 (htab->params->stub_bfd,
10819 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10823 if (PPC_LO (r2off) != 0)
10825 bfd_put_32 (htab->params->stub_bfd,
10826 ADDI_R2_R2 | PPC_LO (r2off), loc);
10832 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10834 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10836 info->callbacks->einfo
10837 (_("%P: long branch stub `%s' offset overflow\n"),
10838 stub_entry->root.string);
10839 htab->stub_error = TRUE;
10843 if (info->emitrelocations)
10845 r = get_relocs (stub_entry->group->stub_sec, 1);
10848 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10849 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10850 r->r_addend = dest;
10851 if (stub_entry->h != NULL)
10853 struct elf_link_hash_entry **hashes;
10854 unsigned long symndx;
10855 struct ppc_link_hash_entry *h;
10857 hashes = elf_sym_hashes (htab->params->stub_bfd);
10858 if (hashes == NULL)
10860 bfd_size_type hsize;
10862 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10863 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10864 if (hashes == NULL)
10866 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10867 htab->stub_globals = 1;
10869 symndx = htab->stub_globals++;
10871 hashes[symndx] = &h->elf;
10872 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10873 if (h->oh != NULL && h->oh->is_func)
10874 h = ppc_follow_link (h->oh);
10875 if (h->elf.root.u.def.section != stub_entry->target_section)
10876 /* H is an opd symbol. The addend must be zero. */
10880 off = (h->elf.root.u.def.value
10881 + h->elf.root.u.def.section->output_offset
10882 + h->elf.root.u.def.section->output_section->vma);
10883 r->r_addend -= off;
10889 case ppc_stub_plt_branch:
10890 case ppc_stub_plt_branch_r2off:
10891 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10892 stub_entry->root.string + 9,
10894 if (br_entry == NULL)
10896 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10897 stub_entry->root.string);
10898 htab->stub_error = TRUE;
10902 dest = (stub_entry->target_value
10903 + stub_entry->target_section->output_offset
10904 + stub_entry->target_section->output_section->vma);
10905 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10906 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10908 bfd_put_64 (htab->brlt->owner, dest,
10909 htab->brlt->contents + br_entry->offset);
10911 if (br_entry->iter == htab->stub_iteration)
10913 br_entry->iter = 0;
10915 if (htab->relbrlt != NULL)
10917 /* Create a reloc for the branch lookup table entry. */
10918 Elf_Internal_Rela rela;
10921 rela.r_offset = (br_entry->offset
10922 + htab->brlt->output_offset
10923 + htab->brlt->output_section->vma);
10924 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10925 rela.r_addend = dest;
10927 rl = htab->relbrlt->contents;
10928 rl += (htab->relbrlt->reloc_count++
10929 * sizeof (Elf64_External_Rela));
10930 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10932 else if (info->emitrelocations)
10934 r = get_relocs (htab->brlt, 1);
10937 /* brlt, being SEC_LINKER_CREATED does not go through the
10938 normal reloc processing. Symbols and offsets are not
10939 translated from input file to output file form, so
10940 set up the offset per the output file. */
10941 r->r_offset = (br_entry->offset
10942 + htab->brlt->output_offset
10943 + htab->brlt->output_section->vma);
10944 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10945 r->r_addend = dest;
10949 dest = (br_entry->offset
10950 + htab->brlt->output_offset
10951 + htab->brlt->output_section->vma);
10954 - elf_gp (info->output_bfd)
10955 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10957 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10959 info->callbacks->einfo
10960 (_("%P: linkage table error against `%T'\n"),
10961 stub_entry->root.string);
10962 bfd_set_error (bfd_error_bad_value);
10963 htab->stub_error = TRUE;
10967 if (info->emitrelocations)
10969 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10972 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10973 if (bfd_big_endian (info->output_bfd))
10974 r[0].r_offset += 2;
10975 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10976 r[0].r_offset += 4;
10977 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10978 r[0].r_addend = dest;
10979 if (PPC_HA (off) != 0)
10981 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10982 r[1].r_offset = r[0].r_offset + 4;
10983 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10984 r[1].r_addend = r[0].r_addend;
10988 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10990 if (PPC_HA (off) != 0)
10993 bfd_put_32 (htab->params->stub_bfd,
10994 ADDIS_R12_R2 | PPC_HA (off), loc);
10996 bfd_put_32 (htab->params->stub_bfd,
10997 LD_R12_0R12 | PPC_LO (off), loc);
11002 bfd_put_32 (htab->params->stub_bfd,
11003 LD_R12_0R2 | PPC_LO (off), loc);
11008 bfd_vma r2off = get_r2off (info, stub_entry);
11010 if (r2off == (bfd_vma) -1)
11012 htab->stub_error = TRUE;
11016 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11019 if (PPC_HA (off) != 0)
11022 bfd_put_32 (htab->params->stub_bfd,
11023 ADDIS_R12_R2 | PPC_HA (off), loc);
11025 bfd_put_32 (htab->params->stub_bfd,
11026 LD_R12_0R12 | PPC_LO (off), loc);
11029 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11031 if (PPC_HA (r2off) != 0)
11035 bfd_put_32 (htab->params->stub_bfd,
11036 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11038 if (PPC_LO (r2off) != 0)
11042 bfd_put_32 (htab->params->stub_bfd,
11043 ADDI_R2_R2 | PPC_LO (r2off), loc);
11047 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11049 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11052 case ppc_stub_plt_call:
11053 case ppc_stub_plt_call_r2save:
11054 if (stub_entry->h != NULL
11055 && stub_entry->h->is_func_descriptor
11056 && stub_entry->h->oh != NULL)
11058 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11060 /* If the old-ABI "dot-symbol" is undefined make it weak so
11061 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11062 if (fh->elf.root.type == bfd_link_hash_undefined
11063 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11064 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11065 fh->elf.root.type = bfd_link_hash_undefweak;
11068 /* Now build the stub. */
11069 dest = stub_entry->plt_ent->plt.offset & ~1;
11070 if (dest >= (bfd_vma) -2)
11073 plt = htab->elf.splt;
11074 if (!htab->elf.dynamic_sections_created
11075 || stub_entry->h == NULL
11076 || stub_entry->h->elf.dynindx == -1)
11077 plt = htab->elf.iplt;
11079 dest += plt->output_offset + plt->output_section->vma;
11081 if (stub_entry->h == NULL
11082 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11084 Elf_Internal_Rela rela;
11087 rela.r_offset = dest;
11089 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11091 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11092 rela.r_addend = (stub_entry->target_value
11093 + stub_entry->target_section->output_offset
11094 + stub_entry->target_section->output_section->vma);
11096 rl = (htab->elf.irelplt->contents
11097 + (htab->elf.irelplt->reloc_count++
11098 * sizeof (Elf64_External_Rela)));
11099 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11100 stub_entry->plt_ent->plt.offset |= 1;
11101 htab->local_ifunc_resolver = 1;
11105 - elf_gp (info->output_bfd)
11106 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11108 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11110 info->callbacks->einfo
11111 /* xgettext:c-format */
11112 (_("%P: linkage table error against `%T'\n"),
11113 stub_entry->h != NULL
11114 ? stub_entry->h->elf.root.root.string
11116 bfd_set_error (bfd_error_bad_value);
11117 htab->stub_error = TRUE;
11121 if (htab->params->plt_stub_align != 0)
11123 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11125 stub_entry->group->stub_sec->size += pad;
11126 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11131 if (info->emitrelocations)
11133 r = get_relocs (stub_entry->group->stub_sec,
11134 ((PPC_HA (off) != 0)
11136 ? 2 + (htab->params->plt_static_chain
11137 && PPC_HA (off + 16) == PPC_HA (off))
11141 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11142 if (bfd_big_endian (info->output_bfd))
11143 r[0].r_offset += 2;
11144 r[0].r_addend = dest;
11146 if (stub_entry->h != NULL
11147 && (stub_entry->h == htab->tls_get_addr_fd
11148 || stub_entry->h == htab->tls_get_addr)
11149 && htab->params->tls_get_addr_opt)
11150 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11152 p = build_plt_stub (htab, stub_entry, loc, off, r);
11156 case ppc_stub_save_res:
11164 stub_entry->group->stub_sec->size += size;
11166 if (htab->params->emit_stub_syms)
11168 struct elf_link_hash_entry *h;
11171 const char *const stub_str[] = { "long_branch",
11172 "long_branch_r2off",
11174 "plt_branch_r2off",
11178 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11179 len2 = strlen (stub_entry->root.string);
11180 name = bfd_malloc (len1 + len2 + 2);
11183 memcpy (name, stub_entry->root.string, 9);
11184 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11185 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11186 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11189 if (h->root.type == bfd_link_hash_new)
11191 h->root.type = bfd_link_hash_defined;
11192 h->root.u.def.section = stub_entry->group->stub_sec;
11193 h->root.u.def.value = stub_entry->stub_offset;
11194 h->ref_regular = 1;
11195 h->def_regular = 1;
11196 h->ref_regular_nonweak = 1;
11197 h->forced_local = 1;
11199 h->root.linker_def = 1;
11206 /* As above, but don't actually build the stub. Just bump offset so
11207 we know stub section sizes, and select plt_branch stubs where
11208 long_branch stubs won't do. */
11211 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11213 struct ppc_stub_hash_entry *stub_entry;
11214 struct bfd_link_info *info;
11215 struct ppc_link_hash_table *htab;
11219 /* Massage our args to the form they really have. */
11220 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11223 htab = ppc_hash_table (info);
11227 if (stub_entry->h != NULL
11228 && stub_entry->h->save_res
11229 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11230 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11232 /* Don't make stubs to out-of-line register save/restore
11233 functions. Instead, emit copies of the functions. */
11234 stub_entry->group->needs_save_res = 1;
11235 stub_entry->stub_type = ppc_stub_save_res;
11239 if (stub_entry->stub_type == ppc_stub_plt_call
11240 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11243 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11244 if (off >= (bfd_vma) -2)
11246 plt = htab->elf.splt;
11247 if (!htab->elf.dynamic_sections_created
11248 || stub_entry->h == NULL
11249 || stub_entry->h->elf.dynindx == -1)
11250 plt = htab->elf.iplt;
11251 off += (plt->output_offset
11252 + plt->output_section->vma
11253 - elf_gp (info->output_bfd)
11254 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11256 size = plt_stub_size (htab, stub_entry, off);
11257 if (stub_entry->h != NULL
11258 && (stub_entry->h == htab->tls_get_addr_fd
11259 || stub_entry->h == htab->tls_get_addr)
11260 && htab->params->tls_get_addr_opt
11261 && (ALWAYS_EMIT_R2SAVE
11262 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11263 stub_entry->group->tls_get_addr_opt_bctrl
11264 = stub_entry->group->stub_sec->size + size - 5 * 4;
11266 if (htab->params->plt_stub_align)
11267 size += plt_stub_pad (htab, stub_entry, off);
11268 if (info->emitrelocations)
11270 stub_entry->group->stub_sec->reloc_count
11271 += ((PPC_HA (off) != 0)
11273 ? 2 + (htab->params->plt_static_chain
11274 && PPC_HA (off + 16) == PPC_HA (off))
11276 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11281 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11284 bfd_vma local_off = 0;
11286 off = (stub_entry->target_value
11287 + stub_entry->target_section->output_offset
11288 + stub_entry->target_section->output_section->vma);
11289 off -= (stub_entry->group->stub_sec->size
11290 + stub_entry->group->stub_sec->output_offset
11291 + stub_entry->group->stub_sec->output_section->vma);
11293 /* Reset the stub type from the plt variant in case we now
11294 can reach with a shorter stub. */
11295 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11296 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11299 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11301 r2off = get_r2off (info, stub_entry);
11302 if (r2off == (bfd_vma) -1)
11304 htab->stub_error = TRUE;
11308 if (PPC_HA (r2off) != 0)
11310 if (PPC_LO (r2off) != 0)
11315 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11317 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11318 Do the same for -R objects without function descriptors. */
11319 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11320 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11322 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11324 struct ppc_branch_hash_entry *br_entry;
11326 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11327 stub_entry->root.string + 9,
11329 if (br_entry == NULL)
11331 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11332 stub_entry->root.string);
11333 htab->stub_error = TRUE;
11337 if (br_entry->iter != htab->stub_iteration)
11339 br_entry->iter = htab->stub_iteration;
11340 br_entry->offset = htab->brlt->size;
11341 htab->brlt->size += 8;
11343 if (htab->relbrlt != NULL)
11344 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11345 else if (info->emitrelocations)
11347 htab->brlt->reloc_count += 1;
11348 htab->brlt->flags |= SEC_RELOC;
11352 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11353 off = (br_entry->offset
11354 + htab->brlt->output_offset
11355 + htab->brlt->output_section->vma
11356 - elf_gp (info->output_bfd)
11357 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11359 if (info->emitrelocations)
11361 stub_entry->group->stub_sec->reloc_count
11362 += 1 + (PPC_HA (off) != 0);
11363 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11366 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11369 if (PPC_HA (off) != 0)
11375 if (PPC_HA (off) != 0)
11378 if (PPC_HA (r2off) != 0)
11380 if (PPC_LO (r2off) != 0)
11384 else if (info->emitrelocations)
11386 stub_entry->group->stub_sec->reloc_count += 1;
11387 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11391 stub_entry->group->stub_sec->size += size;
11395 /* Set up various things so that we can make a list of input sections
11396 for each output section included in the link. Returns -1 on error,
11397 0 when no stubs will be needed, and 1 on success. */
11400 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11404 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11409 htab->sec_info_arr_size = bfd_get_next_section_id ();
11410 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11411 htab->sec_info = bfd_zmalloc (amt);
11412 if (htab->sec_info == NULL)
11415 /* Set toc_off for com, und, abs and ind sections. */
11416 for (id = 0; id < 3; id++)
11417 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11422 /* Set up for first pass at multitoc partitioning. */
11425 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11427 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11429 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11430 htab->toc_bfd = NULL;
11431 htab->toc_first_sec = NULL;
11434 /* The linker repeatedly calls this function for each TOC input section
11435 and linker generated GOT section. Group input bfds such that the toc
11436 within a group is less than 64k in size. */
11439 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11441 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11442 bfd_vma addr, off, limit;
11447 if (!htab->second_toc_pass)
11449 /* Keep track of the first .toc or .got section for this input bfd. */
11450 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11454 htab->toc_bfd = isec->owner;
11455 htab->toc_first_sec = isec;
11458 addr = isec->output_offset + isec->output_section->vma;
11459 off = addr - htab->toc_curr;
11460 limit = 0x80008000;
11461 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11463 if (off + isec->size > limit)
11465 addr = (htab->toc_first_sec->output_offset
11466 + htab->toc_first_sec->output_section->vma);
11467 htab->toc_curr = addr;
11468 htab->toc_curr &= -TOC_BASE_ALIGN;
11471 /* toc_curr is the base address of this toc group. Set elf_gp
11472 for the input section to be the offset relative to the
11473 output toc base plus 0x8000. Making the input elf_gp an
11474 offset allows us to move the toc as a whole without
11475 recalculating input elf_gp. */
11476 off = htab->toc_curr - elf_gp (info->output_bfd);
11477 off += TOC_BASE_OFF;
11479 /* Die if someone uses a linker script that doesn't keep input
11480 file .toc and .got together. */
11482 && elf_gp (isec->owner) != 0
11483 && elf_gp (isec->owner) != off)
11486 elf_gp (isec->owner) = off;
11490 /* During the second pass toc_first_sec points to the start of
11491 a toc group, and toc_curr is used to track the old elf_gp.
11492 We use toc_bfd to ensure we only look at each bfd once. */
11493 if (htab->toc_bfd == isec->owner)
11495 htab->toc_bfd = isec->owner;
11497 if (htab->toc_first_sec == NULL
11498 || htab->toc_curr != elf_gp (isec->owner))
11500 htab->toc_curr = elf_gp (isec->owner);
11501 htab->toc_first_sec = isec;
11503 addr = (htab->toc_first_sec->output_offset
11504 + htab->toc_first_sec->output_section->vma);
11505 off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF;
11506 elf_gp (isec->owner) = off;
11511 /* Called via elf_link_hash_traverse to merge GOT entries for global
11515 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11517 if (h->root.type == bfd_link_hash_indirect)
11520 merge_got_entries (&h->got.glist);
11525 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11529 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11531 struct got_entry *gent;
11533 if (h->root.type == bfd_link_hash_indirect)
11536 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11537 if (!gent->is_indirect)
11538 allocate_got (h, (struct bfd_link_info *) inf, gent);
11542 /* Called on the first multitoc pass after the last call to
11543 ppc64_elf_next_toc_section. This function removes duplicate GOT
11547 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11549 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11550 struct bfd *ibfd, *ibfd2;
11551 bfd_boolean done_something;
11553 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11555 if (!htab->do_multi_toc)
11558 /* Merge global sym got entries within a toc group. */
11559 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11561 /* And tlsld_got. */
11562 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11564 struct got_entry *ent, *ent2;
11566 if (!is_ppc64_elf (ibfd))
11569 ent = ppc64_tlsld_got (ibfd);
11570 if (!ent->is_indirect
11571 && ent->got.offset != (bfd_vma) -1)
11573 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11575 if (!is_ppc64_elf (ibfd2))
11578 ent2 = ppc64_tlsld_got (ibfd2);
11579 if (!ent2->is_indirect
11580 && ent2->got.offset != (bfd_vma) -1
11581 && elf_gp (ibfd2) == elf_gp (ibfd))
11583 ent2->is_indirect = TRUE;
11584 ent2->got.ent = ent;
11590 /* Zap sizes of got sections. */
11591 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11592 htab->elf.irelplt->size -= htab->got_reli_size;
11593 htab->got_reli_size = 0;
11595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11597 asection *got, *relgot;
11599 if (!is_ppc64_elf (ibfd))
11602 got = ppc64_elf_tdata (ibfd)->got;
11605 got->rawsize = got->size;
11607 relgot = ppc64_elf_tdata (ibfd)->relgot;
11608 relgot->rawsize = relgot->size;
11613 /* Now reallocate the got, local syms first. We don't need to
11614 allocate section contents again since we never increase size. */
11615 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11617 struct got_entry **lgot_ents;
11618 struct got_entry **end_lgot_ents;
11619 struct plt_entry **local_plt;
11620 struct plt_entry **end_local_plt;
11621 unsigned char *lgot_masks;
11622 bfd_size_type locsymcount;
11623 Elf_Internal_Shdr *symtab_hdr;
11626 if (!is_ppc64_elf (ibfd))
11629 lgot_ents = elf_local_got_ents (ibfd);
11633 symtab_hdr = &elf_symtab_hdr (ibfd);
11634 locsymcount = symtab_hdr->sh_info;
11635 end_lgot_ents = lgot_ents + locsymcount;
11636 local_plt = (struct plt_entry **) end_lgot_ents;
11637 end_local_plt = local_plt + locsymcount;
11638 lgot_masks = (unsigned char *) end_local_plt;
11639 s = ppc64_elf_tdata (ibfd)->got;
11640 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11642 struct got_entry *ent;
11644 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11646 unsigned int ent_size = 8;
11647 unsigned int rel_size = sizeof (Elf64_External_Rela);
11649 ent->got.offset = s->size;
11650 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11655 s->size += ent_size;
11656 if ((*lgot_masks & PLT_IFUNC) != 0)
11658 htab->elf.irelplt->size += rel_size;
11659 htab->got_reli_size += rel_size;
11661 else if (bfd_link_pic (info))
11663 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11664 srel->size += rel_size;
11670 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11672 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11674 struct got_entry *ent;
11676 if (!is_ppc64_elf (ibfd))
11679 ent = ppc64_tlsld_got (ibfd);
11680 if (!ent->is_indirect
11681 && ent->got.offset != (bfd_vma) -1)
11683 asection *s = ppc64_elf_tdata (ibfd)->got;
11684 ent->got.offset = s->size;
11686 if (bfd_link_pic (info))
11688 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11689 srel->size += sizeof (Elf64_External_Rela);
11694 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11695 if (!done_something)
11696 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11700 if (!is_ppc64_elf (ibfd))
11703 got = ppc64_elf_tdata (ibfd)->got;
11706 done_something = got->rawsize != got->size;
11707 if (done_something)
11712 if (done_something)
11713 (*htab->params->layout_sections_again) ();
11715 /* Set up for second pass over toc sections to recalculate elf_gp
11716 on input sections. */
11717 htab->toc_bfd = NULL;
11718 htab->toc_first_sec = NULL;
11719 htab->second_toc_pass = TRUE;
11720 return done_something;
11723 /* Called after second pass of multitoc partitioning. */
11726 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11728 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11730 /* After the second pass, toc_curr tracks the TOC offset used
11731 for code sections below in ppc64_elf_next_input_section. */
11732 htab->toc_curr = TOC_BASE_OFF;
11735 /* No toc references were found in ISEC. If the code in ISEC makes no
11736 calls, then there's no need to use toc adjusting stubs when branching
11737 into ISEC. Actually, indirect calls from ISEC are OK as they will
11738 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11739 needed, and 2 if a cyclical call-graph was found but no other reason
11740 for a stub was detected. If called from the top level, a return of
11741 2 means the same as a return of 0. */
11744 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11748 /* Mark this section as checked. */
11749 isec->call_check_done = 1;
11751 /* We know none of our code bearing sections will need toc stubs. */
11752 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11755 if (isec->size == 0)
11758 if (isec->output_section == NULL)
11762 if (isec->reloc_count != 0)
11764 Elf_Internal_Rela *relstart, *rel;
11765 Elf_Internal_Sym *local_syms;
11766 struct ppc_link_hash_table *htab;
11768 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11769 info->keep_memory);
11770 if (relstart == NULL)
11773 /* Look for branches to outside of this section. */
11775 htab = ppc_hash_table (info);
11779 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11781 enum elf_ppc64_reloc_type r_type;
11782 unsigned long r_symndx;
11783 struct elf_link_hash_entry *h;
11784 struct ppc_link_hash_entry *eh;
11785 Elf_Internal_Sym *sym;
11787 struct _opd_sec_data *opd;
11791 r_type = ELF64_R_TYPE (rel->r_info);
11792 if (r_type != R_PPC64_REL24
11793 && r_type != R_PPC64_REL14
11794 && r_type != R_PPC64_REL14_BRTAKEN
11795 && r_type != R_PPC64_REL14_BRNTAKEN)
11798 r_symndx = ELF64_R_SYM (rel->r_info);
11799 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11806 /* Calls to dynamic lib functions go through a plt call stub
11808 eh = (struct ppc_link_hash_entry *) h;
11810 && (eh->elf.plt.plist != NULL
11812 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11818 if (sym_sec == NULL)
11819 /* Ignore other undefined symbols. */
11822 /* Assume branches to other sections not included in the
11823 link need stubs too, to cover -R and absolute syms. */
11824 if (sym_sec->output_section == NULL)
11831 sym_value = sym->st_value;
11834 if (h->root.type != bfd_link_hash_defined
11835 && h->root.type != bfd_link_hash_defweak)
11837 sym_value = h->root.u.def.value;
11839 sym_value += rel->r_addend;
11841 /* If this branch reloc uses an opd sym, find the code section. */
11842 opd = get_opd_info (sym_sec);
11845 if (h == NULL && opd->adjust != NULL)
11849 adjust = opd->adjust[OPD_NDX (sym_value)];
11851 /* Assume deleted functions won't ever be called. */
11853 sym_value += adjust;
11856 dest = opd_entry_value (sym_sec, sym_value,
11857 &sym_sec, NULL, FALSE);
11858 if (dest == (bfd_vma) -1)
11863 + sym_sec->output_offset
11864 + sym_sec->output_section->vma);
11866 /* Ignore branch to self. */
11867 if (sym_sec == isec)
11870 /* If the called function uses the toc, we need a stub. */
11871 if (sym_sec->has_toc_reloc
11872 || sym_sec->makes_toc_func_call)
11878 /* Assume any branch that needs a long branch stub might in fact
11879 need a plt_branch stub. A plt_branch stub uses r2. */
11880 else if (dest - (isec->output_offset
11881 + isec->output_section->vma
11882 + rel->r_offset) + (1 << 25)
11883 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11891 /* If calling back to a section in the process of being
11892 tested, we can't say for sure that no toc adjusting stubs
11893 are needed, so don't return zero. */
11894 else if (sym_sec->call_check_in_progress)
11897 /* Branches to another section that itself doesn't have any TOC
11898 references are OK. Recursively call ourselves to check. */
11899 else if (!sym_sec->call_check_done)
11903 /* Mark current section as indeterminate, so that other
11904 sections that call back to current won't be marked as
11906 isec->call_check_in_progress = 1;
11907 recur = toc_adjusting_stub_needed (info, sym_sec);
11908 isec->call_check_in_progress = 0;
11919 if (local_syms != NULL
11920 && (elf_symtab_hdr (isec->owner).contents
11921 != (unsigned char *) local_syms))
11923 if (elf_section_data (isec)->relocs != relstart)
11928 && isec->map_head.s != NULL
11929 && (strcmp (isec->output_section->name, ".init") == 0
11930 || strcmp (isec->output_section->name, ".fini") == 0))
11932 if (isec->map_head.s->has_toc_reloc
11933 || isec->map_head.s->makes_toc_func_call)
11935 else if (!isec->map_head.s->call_check_done)
11938 isec->call_check_in_progress = 1;
11939 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11940 isec->call_check_in_progress = 0;
11947 isec->makes_toc_func_call = 1;
11952 /* The linker repeatedly calls this function for each input section,
11953 in the order that input sections are linked into output sections.
11954 Build lists of input sections to determine groupings between which
11955 we may insert linker stubs. */
11958 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11960 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11965 if ((isec->output_section->flags & SEC_CODE) != 0
11966 && isec->output_section->id < htab->sec_info_arr_size)
11968 /* This happens to make the list in reverse order,
11969 which is what we want. */
11970 htab->sec_info[isec->id].u.list
11971 = htab->sec_info[isec->output_section->id].u.list;
11972 htab->sec_info[isec->output_section->id].u.list = isec;
11975 if (htab->multi_toc_needed)
11977 /* Analyse sections that aren't already flagged as needing a
11978 valid toc pointer. Exclude .fixup for the linux kernel.
11979 .fixup contains branches, but only back to the function that
11980 hit an exception. */
11981 if (!(isec->has_toc_reloc
11982 || (isec->flags & SEC_CODE) == 0
11983 || strcmp (isec->name, ".fixup") == 0
11984 || isec->call_check_done))
11986 if (toc_adjusting_stub_needed (info, isec) < 0)
11989 /* Make all sections use the TOC assigned for this object file.
11990 This will be wrong for pasted sections; We fix that in
11991 check_pasted_section(). */
11992 if (elf_gp (isec->owner) != 0)
11993 htab->toc_curr = elf_gp (isec->owner);
11996 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12000 /* Check that all .init and .fini sections use the same toc, if they
12001 have toc relocs. */
12004 check_pasted_section (struct bfd_link_info *info, const char *name)
12006 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12010 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12011 bfd_vma toc_off = 0;
12014 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12015 if (i->has_toc_reloc)
12018 toc_off = htab->sec_info[i->id].toc_off;
12019 else if (toc_off != htab->sec_info[i->id].toc_off)
12024 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12025 if (i->makes_toc_func_call)
12027 toc_off = htab->sec_info[i->id].toc_off;
12031 /* Make sure the whole pasted function uses the same toc offset. */
12033 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12034 htab->sec_info[i->id].toc_off = toc_off;
12040 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12042 return (check_pasted_section (info, ".init")
12043 & check_pasted_section (info, ".fini"));
12046 /* See whether we can group stub sections together. Grouping stub
12047 sections may result in fewer stubs. More importantly, we need to
12048 put all .init* and .fini* stubs at the beginning of the .init or
12049 .fini output sections respectively, because glibc splits the
12050 _init and _fini functions into multiple parts. Putting a stub in
12051 the middle of a function is not a good idea. */
12054 group_sections (struct bfd_link_info *info,
12055 bfd_size_type stub_group_size,
12056 bfd_boolean stubs_always_before_branch)
12058 struct ppc_link_hash_table *htab;
12060 bfd_boolean suppress_size_errors;
12062 htab = ppc_hash_table (info);
12066 suppress_size_errors = FALSE;
12067 if (stub_group_size == 1)
12069 /* Default values. */
12070 if (stubs_always_before_branch)
12071 stub_group_size = 0x1e00000;
12073 stub_group_size = 0x1c00000;
12074 suppress_size_errors = TRUE;
12077 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12081 if (osec->id >= htab->sec_info_arr_size)
12084 tail = htab->sec_info[osec->id].u.list;
12085 while (tail != NULL)
12089 bfd_size_type total;
12090 bfd_boolean big_sec;
12092 struct map_stub *group;
12093 bfd_size_type group_size;
12096 total = tail->size;
12097 group_size = (ppc64_elf_section_data (tail) != NULL
12098 && ppc64_elf_section_data (tail)->has_14bit_branch
12099 ? stub_group_size >> 10 : stub_group_size);
12101 big_sec = total > group_size;
12102 if (big_sec && !suppress_size_errors)
12103 /* xgettext:c-format */
12104 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12105 tail->owner, tail);
12106 curr_toc = htab->sec_info[tail->id].toc_off;
12108 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12109 && ((total += curr->output_offset - prev->output_offset)
12110 < (ppc64_elf_section_data (prev) != NULL
12111 && ppc64_elf_section_data (prev)->has_14bit_branch
12112 ? (group_size = stub_group_size >> 10) : group_size))
12113 && htab->sec_info[prev->id].toc_off == curr_toc)
12116 /* OK, the size from the start of CURR to the end is less
12117 than group_size and thus can be handled by one stub
12118 section. (or the tail section is itself larger than
12119 group_size, in which case we may be toast.) We should
12120 really be keeping track of the total size of stubs added
12121 here, as stubs contribute to the final output section
12122 size. That's a little tricky, and this way will only
12123 break if stubs added make the total size more than 2^25,
12124 ie. for the default stub_group_size, if stubs total more
12125 than 2097152 bytes, or nearly 75000 plt call stubs. */
12126 group = bfd_alloc (curr->owner, sizeof (*group));
12129 group->link_sec = curr;
12130 group->stub_sec = NULL;
12131 group->needs_save_res = 0;
12132 group->tls_get_addr_opt_bctrl = -1u;
12133 group->next = htab->group;
12134 htab->group = group;
12137 prev = htab->sec_info[tail->id].u.list;
12138 /* Set up this stub group. */
12139 htab->sec_info[tail->id].u.group = group;
12141 while (tail != curr && (tail = prev) != NULL);
12143 /* But wait, there's more! Input sections up to group_size
12144 bytes before the stub section can be handled by it too.
12145 Don't do this if we have a really large section after the
12146 stubs, as adding more stubs increases the chance that
12147 branches may not reach into the stub section. */
12148 if (!stubs_always_before_branch && !big_sec)
12151 while (prev != NULL
12152 && ((total += tail->output_offset - prev->output_offset)
12153 < (ppc64_elf_section_data (prev) != NULL
12154 && ppc64_elf_section_data (prev)->has_14bit_branch
12155 ? (group_size = stub_group_size >> 10) : group_size))
12156 && htab->sec_info[prev->id].toc_off == curr_toc)
12159 prev = htab->sec_info[tail->id].u.list;
12160 htab->sec_info[tail->id].u.group = group;
12169 static const unsigned char glink_eh_frame_cie[] =
12171 0, 0, 0, 16, /* length. */
12172 0, 0, 0, 0, /* id. */
12173 1, /* CIE version. */
12174 'z', 'R', 0, /* Augmentation string. */
12175 4, /* Code alignment. */
12176 0x78, /* Data alignment. */
12178 1, /* Augmentation size. */
12179 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12180 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12184 stub_eh_frame_size (struct map_stub *group, size_t align)
12186 size_t this_size = 17;
12187 if (group->tls_get_addr_opt_bctrl != -1u)
12189 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12192 else if (to_bctrl < 256)
12194 else if (to_bctrl < 65536)
12200 this_size = (this_size + align - 1) & -align;
12204 /* Stripping output sections is normally done before dynamic section
12205 symbols have been allocated. This function is called later, and
12206 handles cases like htab->brlt which is mapped to its own output
12210 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12212 if (isec->size == 0
12213 && isec->output_section->size == 0
12214 && !(isec->output_section->flags & SEC_KEEP)
12215 && !bfd_section_removed_from_list (info->output_bfd,
12216 isec->output_section)
12217 && elf_section_data (isec->output_section)->dynindx == 0)
12219 isec->output_section->flags |= SEC_EXCLUDE;
12220 bfd_section_list_remove (info->output_bfd, isec->output_section);
12221 info->output_bfd->section_count--;
12225 /* Determine and set the size of the stub section for a final link.
12227 The basic idea here is to examine all the relocations looking for
12228 PC-relative calls to a target that is unreachable with a "bl"
12232 ppc64_elf_size_stubs (struct bfd_link_info *info)
12234 bfd_size_type stub_group_size;
12235 bfd_boolean stubs_always_before_branch;
12236 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12241 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12242 htab->params->plt_thread_safe = 1;
12243 if (!htab->opd_abi)
12244 htab->params->plt_thread_safe = 0;
12245 else if (htab->params->plt_thread_safe == -1)
12247 static const char *const thread_starter[] =
12251 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12253 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12254 "mq_notify", "create_timer",
12259 "GOMP_parallel_start",
12260 "GOMP_parallel_loop_static",
12261 "GOMP_parallel_loop_static_start",
12262 "GOMP_parallel_loop_dynamic",
12263 "GOMP_parallel_loop_dynamic_start",
12264 "GOMP_parallel_loop_guided",
12265 "GOMP_parallel_loop_guided_start",
12266 "GOMP_parallel_loop_runtime",
12267 "GOMP_parallel_loop_runtime_start",
12268 "GOMP_parallel_sections",
12269 "GOMP_parallel_sections_start",
12275 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12277 struct elf_link_hash_entry *h;
12278 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12279 FALSE, FALSE, TRUE);
12280 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12281 if (htab->params->plt_thread_safe)
12285 stubs_always_before_branch = htab->params->group_size < 0;
12286 if (htab->params->group_size < 0)
12287 stub_group_size = -htab->params->group_size;
12289 stub_group_size = htab->params->group_size;
12291 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12294 #define STUB_SHRINK_ITER 20
12295 /* Loop until no stubs added. After iteration 20 of this loop we may
12296 exit on a stub section shrinking. This is to break out of a
12297 pathological case where adding stubs on one iteration decreases
12298 section gaps (perhaps due to alignment), which then requires
12299 fewer or smaller stubs on the next iteration. */
12304 unsigned int bfd_indx;
12305 struct map_stub *group;
12307 htab->stub_iteration += 1;
12309 for (input_bfd = info->input_bfds, bfd_indx = 0;
12311 input_bfd = input_bfd->link.next, bfd_indx++)
12313 Elf_Internal_Shdr *symtab_hdr;
12315 Elf_Internal_Sym *local_syms = NULL;
12317 if (!is_ppc64_elf (input_bfd))
12320 /* We'll need the symbol table in a second. */
12321 symtab_hdr = &elf_symtab_hdr (input_bfd);
12322 if (symtab_hdr->sh_info == 0)
12325 /* Walk over each section attached to the input bfd. */
12326 for (section = input_bfd->sections;
12328 section = section->next)
12330 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12332 /* If there aren't any relocs, then there's nothing more
12334 if ((section->flags & SEC_RELOC) == 0
12335 || (section->flags & SEC_ALLOC) == 0
12336 || (section->flags & SEC_LOAD) == 0
12337 || (section->flags & SEC_CODE) == 0
12338 || section->reloc_count == 0)
12341 /* If this section is a link-once section that will be
12342 discarded, then don't create any stubs. */
12343 if (section->output_section == NULL
12344 || section->output_section->owner != info->output_bfd)
12347 /* Get the relocs. */
12349 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12350 info->keep_memory);
12351 if (internal_relocs == NULL)
12352 goto error_ret_free_local;
12354 /* Now examine each relocation. */
12355 irela = internal_relocs;
12356 irelaend = irela + section->reloc_count;
12357 for (; irela < irelaend; irela++)
12359 enum elf_ppc64_reloc_type r_type;
12360 unsigned int r_indx;
12361 enum ppc_stub_type stub_type;
12362 struct ppc_stub_hash_entry *stub_entry;
12363 asection *sym_sec, *code_sec;
12364 bfd_vma sym_value, code_value;
12365 bfd_vma destination;
12366 unsigned long local_off;
12367 bfd_boolean ok_dest;
12368 struct ppc_link_hash_entry *hash;
12369 struct ppc_link_hash_entry *fdh;
12370 struct elf_link_hash_entry *h;
12371 Elf_Internal_Sym *sym;
12373 const asection *id_sec;
12374 struct _opd_sec_data *opd;
12375 struct plt_entry *plt_ent;
12377 r_type = ELF64_R_TYPE (irela->r_info);
12378 r_indx = ELF64_R_SYM (irela->r_info);
12380 if (r_type >= R_PPC64_max)
12382 bfd_set_error (bfd_error_bad_value);
12383 goto error_ret_free_internal;
12386 /* Only look for stubs on branch instructions. */
12387 if (r_type != R_PPC64_REL24
12388 && r_type != R_PPC64_REL14
12389 && r_type != R_PPC64_REL14_BRTAKEN
12390 && r_type != R_PPC64_REL14_BRNTAKEN)
12393 /* Now determine the call target, its name, value,
12395 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12396 r_indx, input_bfd))
12397 goto error_ret_free_internal;
12398 hash = (struct ppc_link_hash_entry *) h;
12405 sym_value = sym->st_value;
12406 if (sym_sec != NULL
12407 && sym_sec->output_section != NULL)
12410 else if (hash->elf.root.type == bfd_link_hash_defined
12411 || hash->elf.root.type == bfd_link_hash_defweak)
12413 sym_value = hash->elf.root.u.def.value;
12414 if (sym_sec->output_section != NULL)
12417 else if (hash->elf.root.type == bfd_link_hash_undefweak
12418 || hash->elf.root.type == bfd_link_hash_undefined)
12420 /* Recognise an old ABI func code entry sym, and
12421 use the func descriptor sym instead if it is
12423 if (hash->elf.root.root.string[0] == '.'
12424 && hash->oh != NULL)
12426 fdh = ppc_follow_link (hash->oh);
12427 if (fdh->elf.root.type == bfd_link_hash_defined
12428 || fdh->elf.root.type == bfd_link_hash_defweak)
12430 sym_sec = fdh->elf.root.u.def.section;
12431 sym_value = fdh->elf.root.u.def.value;
12432 if (sym_sec->output_section != NULL)
12441 bfd_set_error (bfd_error_bad_value);
12442 goto error_ret_free_internal;
12449 sym_value += irela->r_addend;
12450 destination = (sym_value
12451 + sym_sec->output_offset
12452 + sym_sec->output_section->vma);
12453 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12458 code_sec = sym_sec;
12459 code_value = sym_value;
12460 opd = get_opd_info (sym_sec);
12465 if (hash == NULL && opd->adjust != NULL)
12467 long adjust = opd->adjust[OPD_NDX (sym_value)];
12470 code_value += adjust;
12471 sym_value += adjust;
12473 dest = opd_entry_value (sym_sec, sym_value,
12474 &code_sec, &code_value, FALSE);
12475 if (dest != (bfd_vma) -1)
12477 destination = dest;
12480 /* Fixup old ABI sym to point at code
12482 hash->elf.root.type = bfd_link_hash_defweak;
12483 hash->elf.root.u.def.section = code_sec;
12484 hash->elf.root.u.def.value = code_value;
12489 /* Determine what (if any) linker stub is needed. */
12491 stub_type = ppc_type_of_stub (section, irela, &hash,
12492 &plt_ent, destination,
12495 if (stub_type != ppc_stub_plt_call)
12497 /* Check whether we need a TOC adjusting stub.
12498 Since the linker pastes together pieces from
12499 different object files when creating the
12500 _init and _fini functions, it may be that a
12501 call to what looks like a local sym is in
12502 fact a call needing a TOC adjustment. */
12503 if (code_sec != NULL
12504 && code_sec->output_section != NULL
12505 && (htab->sec_info[code_sec->id].toc_off
12506 != htab->sec_info[section->id].toc_off)
12507 && (code_sec->has_toc_reloc
12508 || code_sec->makes_toc_func_call))
12509 stub_type = ppc_stub_long_branch_r2off;
12512 if (stub_type == ppc_stub_none)
12515 /* __tls_get_addr calls might be eliminated. */
12516 if (stub_type != ppc_stub_plt_call
12518 && (hash == htab->tls_get_addr
12519 || hash == htab->tls_get_addr_fd)
12520 && section->has_tls_reloc
12521 && irela != internal_relocs)
12523 /* Get tls info. */
12524 unsigned char *tls_mask;
12526 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12527 irela - 1, input_bfd))
12528 goto error_ret_free_internal;
12529 if (*tls_mask != 0)
12533 if (stub_type == ppc_stub_plt_call)
12536 && htab->params->plt_localentry0 != 0
12537 && is_elfv2_localentry0 (&hash->elf))
12538 htab->has_plt_localentry0 = 1;
12539 else if (irela + 1 < irelaend
12540 && irela[1].r_offset == irela->r_offset + 4
12541 && (ELF64_R_TYPE (irela[1].r_info)
12542 == R_PPC64_TOCSAVE))
12544 if (!tocsave_find (htab, INSERT,
12545 &local_syms, irela + 1, input_bfd))
12546 goto error_ret_free_internal;
12549 stub_type = ppc_stub_plt_call_r2save;
12552 /* Support for grouping stub sections. */
12553 id_sec = htab->sec_info[section->id].u.group->link_sec;
12555 /* Get the name of this stub. */
12556 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12558 goto error_ret_free_internal;
12560 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12561 stub_name, FALSE, FALSE);
12562 if (stub_entry != NULL)
12564 /* The proper stub has already been created. */
12566 if (stub_type == ppc_stub_plt_call_r2save)
12567 stub_entry->stub_type = stub_type;
12571 stub_entry = ppc_add_stub (stub_name, section, info);
12572 if (stub_entry == NULL)
12575 error_ret_free_internal:
12576 if (elf_section_data (section)->relocs == NULL)
12577 free (internal_relocs);
12578 error_ret_free_local:
12579 if (local_syms != NULL
12580 && (symtab_hdr->contents
12581 != (unsigned char *) local_syms))
12586 stub_entry->stub_type = stub_type;
12587 if (stub_type != ppc_stub_plt_call
12588 && stub_type != ppc_stub_plt_call_r2save)
12590 stub_entry->target_value = code_value;
12591 stub_entry->target_section = code_sec;
12595 stub_entry->target_value = sym_value;
12596 stub_entry->target_section = sym_sec;
12598 stub_entry->h = hash;
12599 stub_entry->plt_ent = plt_ent;
12600 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12602 if (stub_entry->h != NULL)
12603 htab->stub_globals += 1;
12606 /* We're done with the internal relocs, free them. */
12607 if (elf_section_data (section)->relocs != internal_relocs)
12608 free (internal_relocs);
12611 if (local_syms != NULL
12612 && symtab_hdr->contents != (unsigned char *) local_syms)
12614 if (!info->keep_memory)
12617 symtab_hdr->contents = (unsigned char *) local_syms;
12621 /* We may have added some stubs. Find out the new size of the
12623 for (group = htab->group; group != NULL; group = group->next)
12624 if (group->stub_sec != NULL)
12626 asection *stub_sec = group->stub_sec;
12628 if (htab->stub_iteration <= STUB_SHRINK_ITER
12629 || stub_sec->rawsize < stub_sec->size)
12630 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12631 stub_sec->rawsize = stub_sec->size;
12632 stub_sec->size = 0;
12633 stub_sec->reloc_count = 0;
12634 stub_sec->flags &= ~SEC_RELOC;
12637 htab->brlt->size = 0;
12638 htab->brlt->reloc_count = 0;
12639 htab->brlt->flags &= ~SEC_RELOC;
12640 if (htab->relbrlt != NULL)
12641 htab->relbrlt->size = 0;
12643 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12645 for (group = htab->group; group != NULL; group = group->next)
12646 if (group->needs_save_res)
12647 group->stub_sec->size += htab->sfpr->size;
12649 if (info->emitrelocations
12650 && htab->glink != NULL && htab->glink->size != 0)
12652 htab->glink->reloc_count = 1;
12653 htab->glink->flags |= SEC_RELOC;
12656 if (htab->glink_eh_frame != NULL
12657 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12658 && htab->glink_eh_frame->output_section->size > 8)
12660 size_t size = 0, align = 4;
12662 for (group = htab->group; group != NULL; group = group->next)
12663 if (group->stub_sec != NULL)
12664 size += stub_eh_frame_size (group, align);
12665 if (htab->glink != NULL && htab->glink->size != 0)
12666 size += (24 + align - 1) & -align;
12668 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12669 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12670 size = (size + align - 1) & -align;
12671 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12672 htab->glink_eh_frame->size = size;
12675 if (htab->params->plt_stub_align != 0)
12676 for (group = htab->group; group != NULL; group = group->next)
12677 if (group->stub_sec != NULL)
12678 group->stub_sec->size = ((group->stub_sec->size
12679 + (1 << htab->params->plt_stub_align) - 1)
12680 & -(1 << htab->params->plt_stub_align));
12682 for (group = htab->group; group != NULL; group = group->next)
12683 if (group->stub_sec != NULL
12684 && group->stub_sec->rawsize != group->stub_sec->size
12685 && (htab->stub_iteration <= STUB_SHRINK_ITER
12686 || group->stub_sec->rawsize < group->stub_sec->size))
12690 && (htab->glink_eh_frame == NULL
12691 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12694 /* Ask the linker to do its stuff. */
12695 (*htab->params->layout_sections_again) ();
12698 if (htab->glink_eh_frame != NULL
12699 && htab->glink_eh_frame->size != 0)
12702 bfd_byte *p, *last_fde;
12703 size_t last_fde_len, size, align, pad;
12704 struct map_stub *group;
12706 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12709 htab->glink_eh_frame->contents = p;
12713 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12714 /* CIE length (rewrite in case little-endian). */
12715 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12716 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12717 p += last_fde_len + 4;
12719 for (group = htab->group; group != NULL; group = group->next)
12720 if (group->stub_sec != NULL)
12723 last_fde_len = stub_eh_frame_size (group, align) - 4;
12725 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12728 val = p - htab->glink_eh_frame->contents;
12729 bfd_put_32 (htab->elf.dynobj, val, p);
12731 /* Offset to stub section, written later. */
12733 /* stub section size. */
12734 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
12736 /* Augmentation. */
12738 if (group->tls_get_addr_opt_bctrl != -1u)
12740 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12742 /* This FDE needs more than just the default.
12743 Describe __tls_get_addr_opt stub LR. */
12745 *p++ = DW_CFA_advance_loc + to_bctrl;
12746 else if (to_bctrl < 256)
12748 *p++ = DW_CFA_advance_loc1;
12751 else if (to_bctrl < 65536)
12753 *p++ = DW_CFA_advance_loc2;
12754 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
12759 *p++ = DW_CFA_advance_loc4;
12760 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
12763 *p++ = DW_CFA_offset_extended_sf;
12765 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
12766 *p++ = DW_CFA_advance_loc + 4;
12767 *p++ = DW_CFA_restore_extended;
12771 p = last_fde + last_fde_len + 4;
12773 if (htab->glink != NULL && htab->glink->size != 0)
12776 last_fde_len = ((24 + align - 1) & -align) - 4;
12778 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12781 val = p - htab->glink_eh_frame->contents;
12782 bfd_put_32 (htab->elf.dynobj, val, p);
12784 /* Offset to .glink, written later. */
12787 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12789 /* Augmentation. */
12792 *p++ = DW_CFA_advance_loc + 1;
12793 *p++ = DW_CFA_register;
12795 *p++ = htab->opd_abi ? 12 : 0;
12796 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
12797 *p++ = DW_CFA_restore_extended;
12799 p += ((24 + align - 1) & -align) - 24;
12801 /* Subsume any padding into the last FDE if user .eh_frame
12802 sections are aligned more than glink_eh_frame. Otherwise any
12803 zero padding will be seen as a terminator. */
12804 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12805 size = p - htab->glink_eh_frame->contents;
12806 pad = ((size + align - 1) & -align) - size;
12807 htab->glink_eh_frame->size = size + pad;
12808 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12811 maybe_strip_output (info, htab->brlt);
12812 if (htab->glink_eh_frame != NULL)
12813 maybe_strip_output (info, htab->glink_eh_frame);
12818 /* Called after we have determined section placement. If sections
12819 move, we'll be called again. Provide a value for TOCstart. */
12822 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12825 bfd_vma TOCstart, adjust;
12829 struct elf_link_hash_entry *h;
12830 struct elf_link_hash_table *htab = elf_hash_table (info);
12832 if (is_elf_hash_table (htab)
12833 && htab->hgot != NULL)
12837 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12838 if (is_elf_hash_table (htab))
12842 && h->root.type == bfd_link_hash_defined
12843 && !h->root.linker_def
12844 && (!is_elf_hash_table (htab)
12845 || h->def_regular))
12847 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12848 + h->root.u.def.section->output_offset
12849 + h->root.u.def.section->output_section->vma);
12850 _bfd_set_gp_value (obfd, TOCstart);
12855 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12856 order. The TOC starts where the first of these sections starts. */
12857 s = bfd_get_section_by_name (obfd, ".got");
12858 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12859 s = bfd_get_section_by_name (obfd, ".toc");
12860 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12861 s = bfd_get_section_by_name (obfd, ".tocbss");
12862 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12863 s = bfd_get_section_by_name (obfd, ".plt");
12864 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12866 /* This may happen for
12867 o references to TOC base (SYM@toc / TOC[tc0]) without a
12869 o bad linker script
12870 o --gc-sections and empty TOC sections
12872 FIXME: Warn user? */
12874 /* Look for a likely section. We probably won't even be
12876 for (s = obfd->sections; s != NULL; s = s->next)
12877 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12879 == (SEC_ALLOC | SEC_SMALL_DATA))
12882 for (s = obfd->sections; s != NULL; s = s->next)
12883 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12884 == (SEC_ALLOC | SEC_SMALL_DATA))
12887 for (s = obfd->sections; s != NULL; s = s->next)
12888 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12892 for (s = obfd->sections; s != NULL; s = s->next)
12893 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12899 TOCstart = s->output_section->vma + s->output_offset;
12901 /* Force alignment. */
12902 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12903 TOCstart -= adjust;
12904 _bfd_set_gp_value (obfd, TOCstart);
12906 if (info != NULL && s != NULL)
12908 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12912 if (htab->elf.hgot != NULL)
12914 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12915 htab->elf.hgot->root.u.def.section = s;
12920 struct bfd_link_hash_entry *bh = NULL;
12921 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12922 s, TOC_BASE_OFF - adjust,
12923 NULL, FALSE, FALSE, &bh);
12929 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12930 write out any global entry stubs. */
12933 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12935 struct bfd_link_info *info;
12936 struct ppc_link_hash_table *htab;
12937 struct plt_entry *pent;
12940 if (h->root.type == bfd_link_hash_indirect)
12943 if (!h->pointer_equality_needed)
12946 if (h->def_regular)
12950 htab = ppc_hash_table (info);
12955 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12956 if (pent->plt.offset != (bfd_vma) -1
12957 && pent->addend == 0)
12963 p = s->contents + h->root.u.def.value;
12964 plt = htab->elf.splt;
12965 if (!htab->elf.dynamic_sections_created
12966 || h->dynindx == -1)
12967 plt = htab->elf.iplt;
12968 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12969 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12971 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12973 info->callbacks->einfo
12974 (_("%P: linkage table error against `%T'\n"),
12975 h->root.root.string);
12976 bfd_set_error (bfd_error_bad_value);
12977 htab->stub_error = TRUE;
12980 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12981 if (htab->params->emit_stub_syms)
12983 size_t len = strlen (h->root.root.string);
12984 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12989 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12990 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12993 if (h->root.type == bfd_link_hash_new)
12995 h->root.type = bfd_link_hash_defined;
12996 h->root.u.def.section = s;
12997 h->root.u.def.value = p - s->contents;
12998 h->ref_regular = 1;
12999 h->def_regular = 1;
13000 h->ref_regular_nonweak = 1;
13001 h->forced_local = 1;
13003 h->root.linker_def = 1;
13007 if (PPC_HA (off) != 0)
13009 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13012 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13014 bfd_put_32 (s->owner, MTCTR_R12, p);
13016 bfd_put_32 (s->owner, BCTR, p);
13022 /* Build all the stubs associated with the current output file.
13023 The stubs are kept in a hash table attached to the main linker
13024 hash table. This function is called via gldelf64ppc_finish. */
13027 ppc64_elf_build_stubs (struct bfd_link_info *info,
13030 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13031 struct map_stub *group;
13032 asection *stub_sec;
13034 int stub_sec_count = 0;
13039 /* Allocate memory to hold the linker stubs. */
13040 for (group = htab->group; group != NULL; group = group->next)
13041 if ((stub_sec = group->stub_sec) != NULL
13042 && stub_sec->size != 0)
13044 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13045 if (stub_sec->contents == NULL)
13047 stub_sec->size = 0;
13050 if (htab->glink != NULL && htab->glink->size != 0)
13055 /* Build the .glink plt call stub. */
13056 if (htab->params->emit_stub_syms)
13058 struct elf_link_hash_entry *h;
13059 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13060 TRUE, FALSE, FALSE);
13063 if (h->root.type == bfd_link_hash_new)
13065 h->root.type = bfd_link_hash_defined;
13066 h->root.u.def.section = htab->glink;
13067 h->root.u.def.value = 8;
13068 h->ref_regular = 1;
13069 h->def_regular = 1;
13070 h->ref_regular_nonweak = 1;
13071 h->forced_local = 1;
13073 h->root.linker_def = 1;
13076 plt0 = (htab->elf.splt->output_section->vma
13077 + htab->elf.splt->output_offset
13079 if (info->emitrelocations)
13081 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13084 r->r_offset = (htab->glink->output_offset
13085 + htab->glink->output_section->vma);
13086 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13087 r->r_addend = plt0;
13089 p = htab->glink->contents;
13090 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13091 bfd_put_64 (htab->glink->owner, plt0, p);
13095 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13097 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13099 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13101 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13103 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13105 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13107 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13109 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13111 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13113 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13118 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13120 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13122 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13124 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13126 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13128 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13130 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13132 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13134 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13136 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13138 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13140 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13142 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13145 bfd_put_32 (htab->glink->owner, BCTR, p);
13147 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13149 bfd_put_32 (htab->glink->owner, NOP, p);
13153 /* Build the .glink lazy link call stubs. */
13155 while (p < htab->glink->contents + htab->glink->rawsize)
13161 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13166 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13168 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13173 bfd_put_32 (htab->glink->owner,
13174 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13179 /* Build .glink global entry stubs. */
13180 if (htab->glink->size > htab->glink->rawsize)
13181 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13184 if (htab->brlt != NULL && htab->brlt->size != 0)
13186 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13188 if (htab->brlt->contents == NULL)
13191 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13193 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13194 htab->relbrlt->size);
13195 if (htab->relbrlt->contents == NULL)
13199 /* Build the stubs as directed by the stub hash table. */
13200 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13202 for (group = htab->group; group != NULL; group = group->next)
13203 if (group->needs_save_res)
13205 stub_sec = group->stub_sec;
13206 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13208 if (htab->params->emit_stub_syms)
13212 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13213 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13216 stub_sec->size += htab->sfpr->size;
13219 if (htab->relbrlt != NULL)
13220 htab->relbrlt->reloc_count = 0;
13222 if (htab->params->plt_stub_align != 0)
13223 for (group = htab->group; group != NULL; group = group->next)
13224 if ((stub_sec = group->stub_sec) != NULL)
13225 stub_sec->size = ((stub_sec->size
13226 + (1 << htab->params->plt_stub_align) - 1)
13227 & -(1 << htab->params->plt_stub_align));
13229 for (group = htab->group; group != NULL; group = group->next)
13230 if ((stub_sec = group->stub_sec) != NULL)
13232 stub_sec_count += 1;
13233 if (stub_sec->rawsize != stub_sec->size
13234 && (htab->stub_iteration <= STUB_SHRINK_ITER
13235 || stub_sec->rawsize < stub_sec->size))
13241 htab->stub_error = TRUE;
13242 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13245 if (htab->stub_error)
13251 *stats = bfd_malloc (500);
13252 if (*stats == NULL)
13255 len = sprintf (*stats,
13256 ngettext ("linker stubs in %u group\n",
13257 "linker stubs in %u groups\n",
13260 sprintf (*stats + len, _(" branch %lu\n"
13261 " toc adjust %lu\n"
13262 " long branch %lu\n"
13263 " long toc adj %lu\n"
13265 " plt call toc %lu\n"
13266 " global entry %lu"),
13267 htab->stub_count[ppc_stub_long_branch - 1],
13268 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13269 htab->stub_count[ppc_stub_plt_branch - 1],
13270 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13271 htab->stub_count[ppc_stub_plt_call - 1],
13272 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13273 htab->stub_count[ppc_stub_global_entry - 1]);
13278 /* What to do when ld finds relocations against symbols defined in
13279 discarded sections. */
13281 static unsigned int
13282 ppc64_elf_action_discarded (asection *sec)
13284 if (strcmp (".opd", sec->name) == 0)
13287 if (strcmp (".toc", sec->name) == 0)
13290 if (strcmp (".toc1", sec->name) == 0)
13293 return _bfd_elf_default_action_discarded (sec);
13296 /* The RELOCATE_SECTION function is called by the ELF backend linker
13297 to handle the relocations for a section.
13299 The relocs are always passed as Rela structures; if the section
13300 actually uses Rel structures, the r_addend field will always be
13303 This function is responsible for adjust the section contents as
13304 necessary, and (if using Rela relocs and generating a
13305 relocatable output file) adjusting the reloc addend as
13308 This function does not have to worry about setting the reloc
13309 address or the reloc symbol index.
13311 LOCAL_SYMS is a pointer to the swapped in local symbols.
13313 LOCAL_SECTIONS is an array giving the section in the input file
13314 corresponding to the st_shndx field of each local symbol.
13316 The global hash table entry for the global symbols can be found
13317 via elf_sym_hashes (input_bfd).
13319 When generating relocatable output, this function must handle
13320 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13321 going to be the section symbol corresponding to the output
13322 section, which means that the addend must be adjusted
13326 ppc64_elf_relocate_section (bfd *output_bfd,
13327 struct bfd_link_info *info,
13329 asection *input_section,
13330 bfd_byte *contents,
13331 Elf_Internal_Rela *relocs,
13332 Elf_Internal_Sym *local_syms,
13333 asection **local_sections)
13335 struct ppc_link_hash_table *htab;
13336 Elf_Internal_Shdr *symtab_hdr;
13337 struct elf_link_hash_entry **sym_hashes;
13338 Elf_Internal_Rela *rel;
13339 Elf_Internal_Rela *wrel;
13340 Elf_Internal_Rela *relend;
13341 Elf_Internal_Rela outrel;
13343 struct got_entry **local_got_ents;
13345 bfd_boolean ret = TRUE;
13346 bfd_boolean is_opd;
13347 /* Assume 'at' branch hints. */
13348 bfd_boolean is_isa_v2 = TRUE;
13349 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13351 /* Initialize howto table if needed. */
13352 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13355 htab = ppc_hash_table (info);
13359 /* Don't relocate stub sections. */
13360 if (input_section->owner == htab->params->stub_bfd)
13363 BFD_ASSERT (is_ppc64_elf (input_bfd));
13365 local_got_ents = elf_local_got_ents (input_bfd);
13366 TOCstart = elf_gp (output_bfd);
13367 symtab_hdr = &elf_symtab_hdr (input_bfd);
13368 sym_hashes = elf_sym_hashes (input_bfd);
13369 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13371 rel = wrel = relocs;
13372 relend = relocs + input_section->reloc_count;
13373 for (; rel < relend; wrel++, rel++)
13375 enum elf_ppc64_reloc_type r_type;
13377 bfd_reloc_status_type r;
13378 Elf_Internal_Sym *sym;
13380 struct elf_link_hash_entry *h_elf;
13381 struct ppc_link_hash_entry *h;
13382 struct ppc_link_hash_entry *fdh;
13383 const char *sym_name;
13384 unsigned long r_symndx, toc_symndx;
13385 bfd_vma toc_addend;
13386 unsigned char tls_mask, tls_gd, tls_type;
13387 unsigned char sym_type;
13388 bfd_vma relocation;
13389 bfd_boolean unresolved_reloc;
13390 bfd_boolean warned;
13391 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13394 struct ppc_stub_hash_entry *stub_entry;
13395 bfd_vma max_br_offset;
13397 Elf_Internal_Rela orig_rel;
13398 reloc_howto_type *howto;
13399 struct reloc_howto_struct alt_howto;
13404 r_type = ELF64_R_TYPE (rel->r_info);
13405 r_symndx = ELF64_R_SYM (rel->r_info);
13407 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13408 symbol of the previous ADDR64 reloc. The symbol gives us the
13409 proper TOC base to use. */
13410 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13412 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13414 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13420 unresolved_reloc = FALSE;
13423 if (r_symndx < symtab_hdr->sh_info)
13425 /* It's a local symbol. */
13426 struct _opd_sec_data *opd;
13428 sym = local_syms + r_symndx;
13429 sec = local_sections[r_symndx];
13430 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13431 sym_type = ELF64_ST_TYPE (sym->st_info);
13432 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13433 opd = get_opd_info (sec);
13434 if (opd != NULL && opd->adjust != NULL)
13436 long adjust = opd->adjust[OPD_NDX (sym->st_value
13442 /* If this is a relocation against the opd section sym
13443 and we have edited .opd, adjust the reloc addend so
13444 that ld -r and ld --emit-relocs output is correct.
13445 If it is a reloc against some other .opd symbol,
13446 then the symbol value will be adjusted later. */
13447 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13448 rel->r_addend += adjust;
13450 relocation += adjust;
13456 bfd_boolean ignored;
13458 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13459 r_symndx, symtab_hdr, sym_hashes,
13460 h_elf, sec, relocation,
13461 unresolved_reloc, warned, ignored);
13462 sym_name = h_elf->root.root.string;
13463 sym_type = h_elf->type;
13465 && sec->owner == output_bfd
13466 && strcmp (sec->name, ".opd") == 0)
13468 /* This is a symbol defined in a linker script. All
13469 such are defined in output sections, even those
13470 defined by simple assignment from a symbol defined in
13471 an input section. Transfer the symbol to an
13472 appropriate input .opd section, so that a branch to
13473 this symbol will be mapped to the location specified
13474 by the opd entry. */
13475 struct bfd_link_order *lo;
13476 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13477 if (lo->type == bfd_indirect_link_order)
13479 asection *isec = lo->u.indirect.section;
13480 if (h_elf->root.u.def.value >= isec->output_offset
13481 && h_elf->root.u.def.value < (isec->output_offset
13484 h_elf->root.u.def.value -= isec->output_offset;
13485 h_elf->root.u.def.section = isec;
13492 h = (struct ppc_link_hash_entry *) h_elf;
13494 if (sec != NULL && discarded_section (sec))
13496 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13497 input_bfd, input_section,
13498 contents + rel->r_offset);
13499 wrel->r_offset = rel->r_offset;
13501 wrel->r_addend = 0;
13503 /* For ld -r, remove relocations in debug sections against
13504 symbols defined in discarded sections. Not done for
13505 non-debug to preserve relocs in .eh_frame which the
13506 eh_frame editing code expects to be present. */
13507 if (bfd_link_relocatable (info)
13508 && (input_section->flags & SEC_DEBUGGING))
13514 if (bfd_link_relocatable (info))
13517 if (h != NULL && &h->elf == htab->elf.hgot)
13519 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13520 sec = bfd_abs_section_ptr;
13521 unresolved_reloc = FALSE;
13524 /* TLS optimizations. Replace instruction sequences and relocs
13525 based on information we collected in tls_optimize. We edit
13526 RELOCS so that --emit-relocs will output something sensible
13527 for the final instruction stream. */
13532 tls_mask = h->tls_mask;
13533 else if (local_got_ents != NULL)
13535 struct plt_entry **local_plt = (struct plt_entry **)
13536 (local_got_ents + symtab_hdr->sh_info);
13537 unsigned char *lgot_masks = (unsigned char *)
13538 (local_plt + symtab_hdr->sh_info);
13539 tls_mask = lgot_masks[r_symndx];
13542 && (r_type == R_PPC64_TLS
13543 || r_type == R_PPC64_TLSGD
13544 || r_type == R_PPC64_TLSLD))
13546 /* Check for toc tls entries. */
13547 unsigned char *toc_tls;
13549 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13550 &local_syms, rel, input_bfd))
13554 tls_mask = *toc_tls;
13557 /* Check that tls relocs are used with tls syms, and non-tls
13558 relocs are used with non-tls syms. */
13559 if (r_symndx != STN_UNDEF
13560 && r_type != R_PPC64_NONE
13562 || h->elf.root.type == bfd_link_hash_defined
13563 || h->elf.root.type == bfd_link_hash_defweak)
13564 && (IS_PPC64_TLS_RELOC (r_type)
13565 != (sym_type == STT_TLS
13566 || (sym_type == STT_SECTION
13567 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13570 && (r_type == R_PPC64_TLS
13571 || r_type == R_PPC64_TLSGD
13572 || r_type == R_PPC64_TLSLD))
13573 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13576 info->callbacks->einfo
13577 (!IS_PPC64_TLS_RELOC (r_type)
13578 /* xgettext:c-format */
13579 ? _("%H: %s used with TLS symbol `%T'\n")
13580 /* xgettext:c-format */
13581 : _("%H: %s used with non-TLS symbol `%T'\n"),
13582 input_bfd, input_section, rel->r_offset,
13583 ppc64_elf_howto_table[r_type]->name,
13587 /* Ensure reloc mapping code below stays sane. */
13588 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13589 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13590 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13591 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13592 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13593 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13594 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13595 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13596 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13597 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13605 case R_PPC64_LO_DS_OPT:
13606 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13607 if ((insn & (0x3f << 26)) != 58u << 26)
13609 insn += (14u << 26) - (58u << 26);
13610 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13611 r_type = R_PPC64_TOC16_LO;
13612 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13615 case R_PPC64_TOC16:
13616 case R_PPC64_TOC16_LO:
13617 case R_PPC64_TOC16_DS:
13618 case R_PPC64_TOC16_LO_DS:
13620 /* Check for toc tls entries. */
13621 unsigned char *toc_tls;
13624 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13625 &local_syms, rel, input_bfd);
13631 tls_mask = *toc_tls;
13632 if (r_type == R_PPC64_TOC16_DS
13633 || r_type == R_PPC64_TOC16_LO_DS)
13636 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13641 /* If we found a GD reloc pair, then we might be
13642 doing a GD->IE transition. */
13645 tls_gd = TLS_TPRELGD;
13646 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13649 else if (retval == 3)
13651 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13659 case R_PPC64_GOT_TPREL16_HI:
13660 case R_PPC64_GOT_TPREL16_HA:
13662 && (tls_mask & TLS_TPREL) == 0)
13664 rel->r_offset -= d_offset;
13665 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13666 r_type = R_PPC64_NONE;
13667 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13671 case R_PPC64_GOT_TPREL16_DS:
13672 case R_PPC64_GOT_TPREL16_LO_DS:
13674 && (tls_mask & TLS_TPREL) == 0)
13677 insn = bfd_get_32 (input_bfd,
13678 contents + rel->r_offset - d_offset);
13680 insn |= 0x3c0d0000; /* addis 0,13,0 */
13681 bfd_put_32 (input_bfd, insn,
13682 contents + rel->r_offset - d_offset);
13683 r_type = R_PPC64_TPREL16_HA;
13684 if (toc_symndx != 0)
13686 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13687 rel->r_addend = toc_addend;
13688 /* We changed the symbol. Start over in order to
13689 get h, sym, sec etc. right. */
13693 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13699 && (tls_mask & TLS_TPREL) == 0)
13701 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13702 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13705 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13706 /* Was PPC64_TLS which sits on insn boundary, now
13707 PPC64_TPREL16_LO which is at low-order half-word. */
13708 rel->r_offset += d_offset;
13709 r_type = R_PPC64_TPREL16_LO;
13710 if (toc_symndx != 0)
13712 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13713 rel->r_addend = toc_addend;
13714 /* We changed the symbol. Start over in order to
13715 get h, sym, sec etc. right. */
13719 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13723 case R_PPC64_GOT_TLSGD16_HI:
13724 case R_PPC64_GOT_TLSGD16_HA:
13725 tls_gd = TLS_TPRELGD;
13726 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13730 case R_PPC64_GOT_TLSLD16_HI:
13731 case R_PPC64_GOT_TLSLD16_HA:
13732 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13735 if ((tls_mask & tls_gd) != 0)
13736 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13737 + R_PPC64_GOT_TPREL16_DS);
13740 rel->r_offset -= d_offset;
13741 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13742 r_type = R_PPC64_NONE;
13744 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13748 case R_PPC64_GOT_TLSGD16:
13749 case R_PPC64_GOT_TLSGD16_LO:
13750 tls_gd = TLS_TPRELGD;
13751 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13755 case R_PPC64_GOT_TLSLD16:
13756 case R_PPC64_GOT_TLSLD16_LO:
13757 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13759 unsigned int insn1, insn2;
13763 offset = (bfd_vma) -1;
13764 /* If not using the newer R_PPC64_TLSGD/LD to mark
13765 __tls_get_addr calls, we must trust that the call
13766 stays with its arg setup insns, ie. that the next
13767 reloc is the __tls_get_addr call associated with
13768 the current reloc. Edit both insns. */
13769 if (input_section->has_tls_get_addr_call
13770 && rel + 1 < relend
13771 && branch_reloc_hash_match (input_bfd, rel + 1,
13772 htab->tls_get_addr,
13773 htab->tls_get_addr_fd))
13774 offset = rel[1].r_offset;
13775 /* We read the low GOT_TLS (or TOC16) insn because we
13776 need to keep the destination reg. It may be
13777 something other than the usual r3, and moved to r3
13778 before the call by intervening code. */
13779 insn1 = bfd_get_32 (input_bfd,
13780 contents + rel->r_offset - d_offset);
13781 if ((tls_mask & tls_gd) != 0)
13784 insn1 &= (0x1f << 21) | (0x1f << 16);
13785 insn1 |= 58 << 26; /* ld */
13786 insn2 = 0x7c636a14; /* add 3,3,13 */
13787 if (offset != (bfd_vma) -1)
13788 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13789 if ((tls_mask & TLS_EXPLICIT) == 0)
13790 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13791 + R_PPC64_GOT_TPREL16_DS);
13793 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13794 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13799 insn1 &= 0x1f << 21;
13800 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13801 insn2 = 0x38630000; /* addi 3,3,0 */
13804 /* Was an LD reloc. */
13806 sec = local_sections[toc_symndx];
13808 r_symndx < symtab_hdr->sh_info;
13810 if (local_sections[r_symndx] == sec)
13812 if (r_symndx >= symtab_hdr->sh_info)
13813 r_symndx = STN_UNDEF;
13814 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13815 if (r_symndx != STN_UNDEF)
13816 rel->r_addend -= (local_syms[r_symndx].st_value
13817 + sec->output_offset
13818 + sec->output_section->vma);
13820 else if (toc_symndx != 0)
13822 r_symndx = toc_symndx;
13823 rel->r_addend = toc_addend;
13825 r_type = R_PPC64_TPREL16_HA;
13826 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13827 if (offset != (bfd_vma) -1)
13829 rel[1].r_info = ELF64_R_INFO (r_symndx,
13830 R_PPC64_TPREL16_LO);
13831 rel[1].r_offset = offset + d_offset;
13832 rel[1].r_addend = rel->r_addend;
13835 bfd_put_32 (input_bfd, insn1,
13836 contents + rel->r_offset - d_offset);
13837 if (offset != (bfd_vma) -1)
13838 bfd_put_32 (input_bfd, insn2, contents + offset);
13839 if ((tls_mask & tls_gd) == 0
13840 && (tls_gd == 0 || toc_symndx != 0))
13842 /* We changed the symbol. Start over in order
13843 to get h, sym, sec etc. right. */
13849 case R_PPC64_TLSGD:
13850 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13852 unsigned int insn2;
13853 bfd_vma offset = rel->r_offset;
13855 if ((tls_mask & TLS_TPRELGD) != 0)
13858 r_type = R_PPC64_NONE;
13859 insn2 = 0x7c636a14; /* add 3,3,13 */
13864 if (toc_symndx != 0)
13866 r_symndx = toc_symndx;
13867 rel->r_addend = toc_addend;
13869 r_type = R_PPC64_TPREL16_LO;
13870 rel->r_offset = offset + d_offset;
13871 insn2 = 0x38630000; /* addi 3,3,0 */
13873 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13874 /* Zap the reloc on the _tls_get_addr call too. */
13875 BFD_ASSERT (offset == rel[1].r_offset);
13876 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13877 bfd_put_32 (input_bfd, insn2, contents + offset);
13878 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13883 case R_PPC64_TLSLD:
13884 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13886 unsigned int insn2;
13887 bfd_vma offset = rel->r_offset;
13890 sec = local_sections[toc_symndx];
13892 r_symndx < symtab_hdr->sh_info;
13894 if (local_sections[r_symndx] == sec)
13896 if (r_symndx >= symtab_hdr->sh_info)
13897 r_symndx = STN_UNDEF;
13898 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13899 if (r_symndx != STN_UNDEF)
13900 rel->r_addend -= (local_syms[r_symndx].st_value
13901 + sec->output_offset
13902 + sec->output_section->vma);
13904 r_type = R_PPC64_TPREL16_LO;
13905 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13906 rel->r_offset = offset + d_offset;
13907 /* Zap the reloc on the _tls_get_addr call too. */
13908 BFD_ASSERT (offset == rel[1].r_offset);
13909 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13910 insn2 = 0x38630000; /* addi 3,3,0 */
13911 bfd_put_32 (input_bfd, insn2, contents + offset);
13916 case R_PPC64_DTPMOD64:
13917 if (rel + 1 < relend
13918 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13919 && rel[1].r_offset == rel->r_offset + 8)
13921 if ((tls_mask & TLS_GD) == 0)
13923 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13924 if ((tls_mask & TLS_TPRELGD) != 0)
13925 r_type = R_PPC64_TPREL64;
13928 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13929 r_type = R_PPC64_NONE;
13931 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13936 if ((tls_mask & TLS_LD) == 0)
13938 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13939 r_type = R_PPC64_NONE;
13940 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13945 case R_PPC64_TPREL64:
13946 if ((tls_mask & TLS_TPREL) == 0)
13948 r_type = R_PPC64_NONE;
13949 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13953 case R_PPC64_ENTRY:
13954 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13955 if (!bfd_link_pic (info)
13956 && !info->traditional_format
13957 && relocation + 0x80008000 <= 0xffffffff)
13959 unsigned int insn1, insn2;
13961 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13962 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13963 if ((insn1 & ~0xfffc) == LD_R2_0R12
13964 && insn2 == ADD_R2_R2_R12)
13966 bfd_put_32 (input_bfd,
13967 LIS_R2 + PPC_HA (relocation),
13968 contents + rel->r_offset);
13969 bfd_put_32 (input_bfd,
13970 ADDI_R2_R2 + PPC_LO (relocation),
13971 contents + rel->r_offset + 4);
13976 relocation -= (rel->r_offset
13977 + input_section->output_offset
13978 + input_section->output_section->vma);
13979 if (relocation + 0x80008000 <= 0xffffffff)
13981 unsigned int insn1, insn2;
13983 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13984 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13985 if ((insn1 & ~0xfffc) == LD_R2_0R12
13986 && insn2 == ADD_R2_R2_R12)
13988 bfd_put_32 (input_bfd,
13989 ADDIS_R2_R12 + PPC_HA (relocation),
13990 contents + rel->r_offset);
13991 bfd_put_32 (input_bfd,
13992 ADDI_R2_R2 + PPC_LO (relocation),
13993 contents + rel->r_offset + 4);
13999 case R_PPC64_REL16_HA:
14000 /* If we are generating a non-PIC executable, edit
14001 . 0: addis 2,12,.TOC.-0b@ha
14002 . addi 2,2,.TOC.-0b@l
14003 used by ELFv2 global entry points to set up r2, to
14006 if .TOC. is in range. */
14007 if (!bfd_link_pic (info)
14008 && !info->traditional_format
14010 && rel->r_addend == d_offset
14011 && h != NULL && &h->elf == htab->elf.hgot
14012 && rel + 1 < relend
14013 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14014 && rel[1].r_offset == rel->r_offset + 4
14015 && rel[1].r_addend == rel->r_addend + 4
14016 && relocation + 0x80008000 <= 0xffffffff)
14018 unsigned int insn1, insn2;
14019 bfd_vma offset = rel->r_offset - d_offset;
14020 insn1 = bfd_get_32 (input_bfd, contents + offset);
14021 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14022 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14023 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14025 r_type = R_PPC64_ADDR16_HA;
14026 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14027 rel->r_addend -= d_offset;
14028 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14029 rel[1].r_addend -= d_offset + 4;
14030 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14036 /* Handle other relocations that tweak non-addend part of insn. */
14038 max_br_offset = 1 << 25;
14039 addend = rel->r_addend;
14040 reloc_dest = DEST_NORMAL;
14046 case R_PPC64_TOCSAVE:
14047 if (relocation + addend == (rel->r_offset
14048 + input_section->output_offset
14049 + input_section->output_section->vma)
14050 && tocsave_find (htab, NO_INSERT,
14051 &local_syms, rel, input_bfd))
14053 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14055 || insn == CROR_151515 || insn == CROR_313131)
14056 bfd_put_32 (input_bfd,
14057 STD_R2_0R1 + STK_TOC (htab),
14058 contents + rel->r_offset);
14062 /* Branch taken prediction relocations. */
14063 case R_PPC64_ADDR14_BRTAKEN:
14064 case R_PPC64_REL14_BRTAKEN:
14065 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14066 /* Fall through. */
14068 /* Branch not taken prediction relocations. */
14069 case R_PPC64_ADDR14_BRNTAKEN:
14070 case R_PPC64_REL14_BRNTAKEN:
14071 insn |= bfd_get_32 (input_bfd,
14072 contents + rel->r_offset) & ~(0x01 << 21);
14073 /* Fall through. */
14075 case R_PPC64_REL14:
14076 max_br_offset = 1 << 15;
14077 /* Fall through. */
14079 case R_PPC64_REL24:
14080 /* Calls to functions with a different TOC, such as calls to
14081 shared objects, need to alter the TOC pointer. This is
14082 done using a linkage stub. A REL24 branching to these
14083 linkage stubs needs to be followed by a nop, as the nop
14084 will be replaced with an instruction to restore the TOC
14089 && h->oh->is_func_descriptor)
14090 fdh = ppc_follow_link (h->oh);
14091 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14093 if (stub_entry != NULL
14094 && (stub_entry->stub_type == ppc_stub_plt_call
14095 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14096 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14097 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14099 bfd_boolean can_plt_call = FALSE;
14101 if (stub_entry->stub_type == ppc_stub_plt_call
14103 && htab->params->plt_localentry0 != 0
14104 && is_elfv2_localentry0 (&h->elf))
14106 /* The function doesn't use or change r2. */
14107 can_plt_call = TRUE;
14110 /* All of these stubs may modify r2, so there must be a
14111 branch and link followed by a nop. The nop is
14112 replaced by an insn to restore r2. */
14113 else if (rel->r_offset + 8 <= input_section->size)
14117 br = bfd_get_32 (input_bfd,
14118 contents + rel->r_offset);
14123 nop = bfd_get_32 (input_bfd,
14124 contents + rel->r_offset + 4);
14126 || nop == CROR_151515 || nop == CROR_313131)
14129 && (h == htab->tls_get_addr_fd
14130 || h == htab->tls_get_addr)
14131 && htab->params->tls_get_addr_opt)
14133 /* Special stub used, leave nop alone. */
14136 bfd_put_32 (input_bfd,
14137 LD_R2_0R1 + STK_TOC (htab),
14138 contents + rel->r_offset + 4);
14139 can_plt_call = TRUE;
14144 if (!can_plt_call && h != NULL)
14146 const char *name = h->elf.root.root.string;
14151 if (strncmp (name, "__libc_start_main", 17) == 0
14152 && (name[17] == 0 || name[17] == '@'))
14154 /* Allow crt1 branch to go via a toc adjusting
14155 stub. Other calls that never return could do
14156 the same, if we could detect such. */
14157 can_plt_call = TRUE;
14163 /* g++ as of 20130507 emits self-calls without a
14164 following nop. This is arguably wrong since we
14165 have conflicting information. On the one hand a
14166 global symbol and on the other a local call
14167 sequence, but don't error for this special case.
14168 It isn't possible to cheaply verify we have
14169 exactly such a call. Allow all calls to the same
14171 asection *code_sec = sec;
14173 if (get_opd_info (sec) != NULL)
14175 bfd_vma off = (relocation + addend
14176 - sec->output_section->vma
14177 - sec->output_offset);
14179 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14181 if (code_sec == input_section)
14182 can_plt_call = TRUE;
14187 if (stub_entry->stub_type == ppc_stub_plt_call
14188 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14189 info->callbacks->einfo
14190 /* xgettext:c-format */
14191 (_("%H: call to `%T' lacks nop, can't restore toc; "
14192 "recompile with -fPIC\n"),
14193 input_bfd, input_section, rel->r_offset, sym_name);
14195 info->callbacks->einfo
14196 /* xgettext:c-format */
14197 (_("%H: call to `%T' lacks nop, can't restore toc; "
14198 "(-mcmodel=small toc adjust stub)\n"),
14199 input_bfd, input_section, rel->r_offset, sym_name);
14201 bfd_set_error (bfd_error_bad_value);
14206 && (stub_entry->stub_type == ppc_stub_plt_call
14207 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14208 unresolved_reloc = FALSE;
14211 if ((stub_entry == NULL
14212 || stub_entry->stub_type == ppc_stub_long_branch
14213 || stub_entry->stub_type == ppc_stub_plt_branch)
14214 && get_opd_info (sec) != NULL)
14216 /* The branch destination is the value of the opd entry. */
14217 bfd_vma off = (relocation + addend
14218 - sec->output_section->vma
14219 - sec->output_offset);
14220 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14221 if (dest != (bfd_vma) -1)
14225 reloc_dest = DEST_OPD;
14229 /* If the branch is out of reach we ought to have a long
14231 from = (rel->r_offset
14232 + input_section->output_offset
14233 + input_section->output_section->vma);
14235 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14239 if (stub_entry != NULL
14240 && (stub_entry->stub_type == ppc_stub_long_branch
14241 || stub_entry->stub_type == ppc_stub_plt_branch)
14242 && (r_type == R_PPC64_ADDR14_BRTAKEN
14243 || r_type == R_PPC64_ADDR14_BRNTAKEN
14244 || (relocation + addend - from + max_br_offset
14245 < 2 * max_br_offset)))
14246 /* Don't use the stub if this branch is in range. */
14249 if (stub_entry != NULL)
14251 /* Munge up the value and addend so that we call the stub
14252 rather than the procedure directly. */
14253 asection *stub_sec = stub_entry->group->stub_sec;
14255 if (stub_entry->stub_type == ppc_stub_save_res)
14256 relocation += (stub_sec->output_offset
14257 + stub_sec->output_section->vma
14258 + stub_sec->size - htab->sfpr->size
14259 - htab->sfpr->output_offset
14260 - htab->sfpr->output_section->vma);
14262 relocation = (stub_entry->stub_offset
14263 + stub_sec->output_offset
14264 + stub_sec->output_section->vma);
14266 reloc_dest = DEST_STUB;
14268 if ((stub_entry->stub_type == ppc_stub_plt_call
14269 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14270 && (ALWAYS_EMIT_R2SAVE
14271 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14272 && rel + 1 < relend
14273 && rel[1].r_offset == rel->r_offset + 4
14274 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14282 /* Set 'a' bit. This is 0b00010 in BO field for branch
14283 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14284 for branch on CTR insns (BO == 1a00t or 1a01t). */
14285 if ((insn & (0x14 << 21)) == (0x04 << 21))
14286 insn |= 0x02 << 21;
14287 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14288 insn |= 0x08 << 21;
14294 /* Invert 'y' bit if not the default. */
14295 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14296 insn ^= 0x01 << 21;
14299 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14302 /* NOP out calls to undefined weak functions.
14303 We can thus call a weak function without first
14304 checking whether the function is defined. */
14306 && h->elf.root.type == bfd_link_hash_undefweak
14307 && h->elf.dynindx == -1
14308 && r_type == R_PPC64_REL24
14312 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14318 /* Set `addend'. */
14323 info->callbacks->einfo
14324 /* xgettext:c-format */
14325 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14326 input_bfd, (int) r_type, sym_name);
14328 bfd_set_error (bfd_error_bad_value);
14334 case R_PPC64_TLSGD:
14335 case R_PPC64_TLSLD:
14336 case R_PPC64_TOCSAVE:
14337 case R_PPC64_GNU_VTINHERIT:
14338 case R_PPC64_GNU_VTENTRY:
14339 case R_PPC64_ENTRY:
14342 /* GOT16 relocations. Like an ADDR16 using the symbol's
14343 address in the GOT as relocation value instead of the
14344 symbol's value itself. Also, create a GOT entry for the
14345 symbol and put the symbol value there. */
14346 case R_PPC64_GOT_TLSGD16:
14347 case R_PPC64_GOT_TLSGD16_LO:
14348 case R_PPC64_GOT_TLSGD16_HI:
14349 case R_PPC64_GOT_TLSGD16_HA:
14350 tls_type = TLS_TLS | TLS_GD;
14353 case R_PPC64_GOT_TLSLD16:
14354 case R_PPC64_GOT_TLSLD16_LO:
14355 case R_PPC64_GOT_TLSLD16_HI:
14356 case R_PPC64_GOT_TLSLD16_HA:
14357 tls_type = TLS_TLS | TLS_LD;
14360 case R_PPC64_GOT_TPREL16_DS:
14361 case R_PPC64_GOT_TPREL16_LO_DS:
14362 case R_PPC64_GOT_TPREL16_HI:
14363 case R_PPC64_GOT_TPREL16_HA:
14364 tls_type = TLS_TLS | TLS_TPREL;
14367 case R_PPC64_GOT_DTPREL16_DS:
14368 case R_PPC64_GOT_DTPREL16_LO_DS:
14369 case R_PPC64_GOT_DTPREL16_HI:
14370 case R_PPC64_GOT_DTPREL16_HA:
14371 tls_type = TLS_TLS | TLS_DTPREL;
14374 case R_PPC64_GOT16:
14375 case R_PPC64_GOT16_LO:
14376 case R_PPC64_GOT16_HI:
14377 case R_PPC64_GOT16_HA:
14378 case R_PPC64_GOT16_DS:
14379 case R_PPC64_GOT16_LO_DS:
14382 /* Relocation is to the entry for this symbol in the global
14387 unsigned long indx = 0;
14388 struct got_entry *ent;
14390 if (tls_type == (TLS_TLS | TLS_LD)
14392 || !h->elf.def_dynamic))
14393 ent = ppc64_tlsld_got (input_bfd);
14398 if (!htab->elf.dynamic_sections_created
14399 || h->elf.dynindx == -1
14400 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14401 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14402 /* This is actually a static link, or it is a
14403 -Bsymbolic link and the symbol is defined
14404 locally, or the symbol was forced to be local
14405 because of a version file. */
14409 indx = h->elf.dynindx;
14410 unresolved_reloc = FALSE;
14412 ent = h->elf.got.glist;
14416 if (local_got_ents == NULL)
14418 ent = local_got_ents[r_symndx];
14421 for (; ent != NULL; ent = ent->next)
14422 if (ent->addend == orig_rel.r_addend
14423 && ent->owner == input_bfd
14424 && ent->tls_type == tls_type)
14430 if (ent->is_indirect)
14431 ent = ent->got.ent;
14432 offp = &ent->got.offset;
14433 got = ppc64_elf_tdata (ent->owner)->got;
14437 /* The offset must always be a multiple of 8. We use the
14438 least significant bit to record whether we have already
14439 processed this entry. */
14441 if ((off & 1) != 0)
14445 /* Generate relocs for the dynamic linker, except in
14446 the case of TLSLD where we'll use one entry per
14454 ? h->elf.type == STT_GNU_IFUNC
14455 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14458 relgot = htab->elf.irelplt;
14460 htab->local_ifunc_resolver = 1;
14461 else if (is_static_defined (&h->elf))
14462 htab->maybe_local_ifunc_resolver = 1;
14465 || (bfd_link_pic (info)
14467 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14468 || (tls_type == (TLS_TLS | TLS_LD)
14469 && !h->elf.def_dynamic))
14470 && !(tls_type == (TLS_TLS | TLS_TPREL)
14471 && bfd_link_executable (info)
14472 && SYMBOL_REFERENCES_LOCAL (info, &h->elf))))
14473 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14474 if (relgot != NULL)
14476 outrel.r_offset = (got->output_section->vma
14477 + got->output_offset
14479 outrel.r_addend = addend;
14480 if (tls_type & (TLS_LD | TLS_GD))
14482 outrel.r_addend = 0;
14483 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14484 if (tls_type == (TLS_TLS | TLS_GD))
14486 loc = relgot->contents;
14487 loc += (relgot->reloc_count++
14488 * sizeof (Elf64_External_Rela));
14489 bfd_elf64_swap_reloca_out (output_bfd,
14491 outrel.r_offset += 8;
14492 outrel.r_addend = addend;
14494 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14497 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14498 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14499 else if (tls_type == (TLS_TLS | TLS_TPREL))
14500 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14501 else if (indx != 0)
14502 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14506 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14508 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14510 /* Write the .got section contents for the sake
14512 loc = got->contents + off;
14513 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14517 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14519 outrel.r_addend += relocation;
14520 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14522 if (htab->elf.tls_sec == NULL)
14523 outrel.r_addend = 0;
14525 outrel.r_addend -= htab->elf.tls_sec->vma;
14528 loc = relgot->contents;
14529 loc += (relgot->reloc_count++
14530 * sizeof (Elf64_External_Rela));
14531 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14534 /* Init the .got section contents here if we're not
14535 emitting a reloc. */
14538 relocation += addend;
14541 if (htab->elf.tls_sec == NULL)
14545 if (tls_type & TLS_LD)
14548 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14549 if (tls_type & TLS_TPREL)
14550 relocation += DTP_OFFSET - TP_OFFSET;
14553 if (tls_type & (TLS_GD | TLS_LD))
14555 bfd_put_64 (output_bfd, relocation,
14556 got->contents + off + 8);
14560 bfd_put_64 (output_bfd, relocation,
14561 got->contents + off);
14565 if (off >= (bfd_vma) -2)
14568 relocation = got->output_section->vma + got->output_offset + off;
14569 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14573 case R_PPC64_PLT16_HA:
14574 case R_PPC64_PLT16_HI:
14575 case R_PPC64_PLT16_LO:
14576 case R_PPC64_PLT32:
14577 case R_PPC64_PLT64:
14578 /* Relocation is to the entry for this symbol in the
14579 procedure linkage table. */
14581 struct plt_entry **plt_list = NULL;
14583 plt_list = &h->elf.plt.plist;
14584 else if (local_got_ents != NULL)
14586 struct plt_entry **local_plt = (struct plt_entry **)
14587 (local_got_ents + symtab_hdr->sh_info);
14588 unsigned char *local_got_tls_masks = (unsigned char *)
14589 (local_plt + symtab_hdr->sh_info);
14590 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14591 plt_list = local_plt + r_symndx;
14595 struct plt_entry *ent;
14597 for (ent = *plt_list; ent != NULL; ent = ent->next)
14598 if (ent->plt.offset != (bfd_vma) -1
14599 && ent->addend == orig_rel.r_addend)
14603 plt = htab->elf.splt;
14604 if (!htab->elf.dynamic_sections_created
14606 || h->elf.dynindx == -1)
14607 plt = htab->elf.iplt;
14608 relocation = (plt->output_section->vma
14609 + plt->output_offset
14610 + ent->plt.offset);
14612 unresolved_reloc = FALSE;
14620 /* Relocation value is TOC base. */
14621 relocation = TOCstart;
14622 if (r_symndx == STN_UNDEF)
14623 relocation += htab->sec_info[input_section->id].toc_off;
14624 else if (unresolved_reloc)
14626 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14627 relocation += htab->sec_info[sec->id].toc_off;
14629 unresolved_reloc = TRUE;
14632 /* TOC16 relocs. We want the offset relative to the TOC base,
14633 which is the address of the start of the TOC plus 0x8000.
14634 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14636 case R_PPC64_TOC16:
14637 case R_PPC64_TOC16_LO:
14638 case R_PPC64_TOC16_HI:
14639 case R_PPC64_TOC16_DS:
14640 case R_PPC64_TOC16_LO_DS:
14641 case R_PPC64_TOC16_HA:
14642 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14645 /* Relocate against the beginning of the section. */
14646 case R_PPC64_SECTOFF:
14647 case R_PPC64_SECTOFF_LO:
14648 case R_PPC64_SECTOFF_HI:
14649 case R_PPC64_SECTOFF_DS:
14650 case R_PPC64_SECTOFF_LO_DS:
14651 case R_PPC64_SECTOFF_HA:
14653 addend -= sec->output_section->vma;
14656 case R_PPC64_REL16:
14657 case R_PPC64_REL16_LO:
14658 case R_PPC64_REL16_HI:
14659 case R_PPC64_REL16_HA:
14660 case R_PPC64_REL16DX_HA:
14663 case R_PPC64_REL14:
14664 case R_PPC64_REL14_BRNTAKEN:
14665 case R_PPC64_REL14_BRTAKEN:
14666 case R_PPC64_REL24:
14669 case R_PPC64_TPREL16:
14670 case R_PPC64_TPREL16_LO:
14671 case R_PPC64_TPREL16_HI:
14672 case R_PPC64_TPREL16_HA:
14673 case R_PPC64_TPREL16_DS:
14674 case R_PPC64_TPREL16_LO_DS:
14675 case R_PPC64_TPREL16_HIGH:
14676 case R_PPC64_TPREL16_HIGHA:
14677 case R_PPC64_TPREL16_HIGHER:
14678 case R_PPC64_TPREL16_HIGHERA:
14679 case R_PPC64_TPREL16_HIGHEST:
14680 case R_PPC64_TPREL16_HIGHESTA:
14682 && h->elf.root.type == bfd_link_hash_undefweak
14683 && h->elf.dynindx == -1)
14685 /* Make this relocation against an undefined weak symbol
14686 resolve to zero. This is really just a tweak, since
14687 code using weak externs ought to check that they are
14688 defined before using them. */
14689 bfd_byte *p = contents + rel->r_offset - d_offset;
14691 insn = bfd_get_32 (input_bfd, p);
14692 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14694 bfd_put_32 (input_bfd, insn, p);
14697 if (htab->elf.tls_sec != NULL)
14698 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14699 /* The TPREL16 relocs shouldn't really be used in shared
14700 libs or with non-local symbols as that will result in
14701 DT_TEXTREL being set, but support them anyway. */
14704 case R_PPC64_DTPREL16:
14705 case R_PPC64_DTPREL16_LO:
14706 case R_PPC64_DTPREL16_HI:
14707 case R_PPC64_DTPREL16_HA:
14708 case R_PPC64_DTPREL16_DS:
14709 case R_PPC64_DTPREL16_LO_DS:
14710 case R_PPC64_DTPREL16_HIGH:
14711 case R_PPC64_DTPREL16_HIGHA:
14712 case R_PPC64_DTPREL16_HIGHER:
14713 case R_PPC64_DTPREL16_HIGHERA:
14714 case R_PPC64_DTPREL16_HIGHEST:
14715 case R_PPC64_DTPREL16_HIGHESTA:
14716 if (htab->elf.tls_sec != NULL)
14717 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14720 case R_PPC64_ADDR64_LOCAL:
14721 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14726 case R_PPC64_DTPMOD64:
14731 case R_PPC64_TPREL64:
14732 if (htab->elf.tls_sec != NULL)
14733 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14736 case R_PPC64_DTPREL64:
14737 if (htab->elf.tls_sec != NULL)
14738 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14739 /* Fall through. */
14741 /* Relocations that may need to be propagated if this is a
14743 case R_PPC64_REL30:
14744 case R_PPC64_REL32:
14745 case R_PPC64_REL64:
14746 case R_PPC64_ADDR14:
14747 case R_PPC64_ADDR14_BRNTAKEN:
14748 case R_PPC64_ADDR14_BRTAKEN:
14749 case R_PPC64_ADDR16:
14750 case R_PPC64_ADDR16_DS:
14751 case R_PPC64_ADDR16_HA:
14752 case R_PPC64_ADDR16_HI:
14753 case R_PPC64_ADDR16_HIGH:
14754 case R_PPC64_ADDR16_HIGHA:
14755 case R_PPC64_ADDR16_HIGHER:
14756 case R_PPC64_ADDR16_HIGHERA:
14757 case R_PPC64_ADDR16_HIGHEST:
14758 case R_PPC64_ADDR16_HIGHESTA:
14759 case R_PPC64_ADDR16_LO:
14760 case R_PPC64_ADDR16_LO_DS:
14761 case R_PPC64_ADDR24:
14762 case R_PPC64_ADDR32:
14763 case R_PPC64_ADDR64:
14764 case R_PPC64_UADDR16:
14765 case R_PPC64_UADDR32:
14766 case R_PPC64_UADDR64:
14768 if ((input_section->flags & SEC_ALLOC) == 0)
14771 if (NO_OPD_RELOCS && is_opd)
14774 if (bfd_link_pic (info)
14776 || h->dyn_relocs != NULL)
14777 && ((h != NULL && pc_dynrelocs (h))
14778 || must_be_dyn_reloc (info, r_type)))
14780 ? h->dyn_relocs != NULL
14781 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14783 bfd_boolean skip, relocate;
14788 /* When generating a dynamic object, these relocations
14789 are copied into the output file to be resolved at run
14795 out_off = _bfd_elf_section_offset (output_bfd, info,
14796 input_section, rel->r_offset);
14797 if (out_off == (bfd_vma) -1)
14799 else if (out_off == (bfd_vma) -2)
14800 skip = TRUE, relocate = TRUE;
14801 out_off += (input_section->output_section->vma
14802 + input_section->output_offset);
14803 outrel.r_offset = out_off;
14804 outrel.r_addend = rel->r_addend;
14806 /* Optimize unaligned reloc use. */
14807 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14808 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14809 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14810 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14811 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14812 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14813 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14814 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14815 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14818 memset (&outrel, 0, sizeof outrel);
14819 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14821 && r_type != R_PPC64_TOC)
14823 indx = h->elf.dynindx;
14824 BFD_ASSERT (indx != -1);
14825 outrel.r_info = ELF64_R_INFO (indx, r_type);
14829 /* This symbol is local, or marked to become local,
14830 or this is an opd section reloc which must point
14831 at a local function. */
14832 outrel.r_addend += relocation;
14833 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14835 if (is_opd && h != NULL)
14837 /* Lie about opd entries. This case occurs
14838 when building shared libraries and we
14839 reference a function in another shared
14840 lib. The same thing happens for a weak
14841 definition in an application that's
14842 overridden by a strong definition in a
14843 shared lib. (I believe this is a generic
14844 bug in binutils handling of weak syms.)
14845 In these cases we won't use the opd
14846 entry in this lib. */
14847 unresolved_reloc = FALSE;
14850 && r_type == R_PPC64_ADDR64
14852 ? h->elf.type == STT_GNU_IFUNC
14853 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14854 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14857 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14859 /* We need to relocate .opd contents for ld.so.
14860 Prelink also wants simple and consistent rules
14861 for relocs. This make all RELATIVE relocs have
14862 *r_offset equal to r_addend. */
14869 ? h->elf.type == STT_GNU_IFUNC
14870 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14872 info->callbacks->einfo
14873 /* xgettext:c-format */
14874 (_("%H: %s for indirect "
14875 "function `%T' unsupported\n"),
14876 input_bfd, input_section, rel->r_offset,
14877 ppc64_elf_howto_table[r_type]->name,
14881 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14883 else if (sec == NULL || sec->owner == NULL)
14885 bfd_set_error (bfd_error_bad_value);
14892 osec = sec->output_section;
14893 indx = elf_section_data (osec)->dynindx;
14897 if ((osec->flags & SEC_READONLY) == 0
14898 && htab->elf.data_index_section != NULL)
14899 osec = htab->elf.data_index_section;
14901 osec = htab->elf.text_index_section;
14902 indx = elf_section_data (osec)->dynindx;
14904 BFD_ASSERT (indx != 0);
14906 /* We are turning this relocation into one
14907 against a section symbol, so subtract out
14908 the output section's address but not the
14909 offset of the input section in the output
14911 outrel.r_addend -= osec->vma;
14914 outrel.r_info = ELF64_R_INFO (indx, r_type);
14918 sreloc = elf_section_data (input_section)->sreloc;
14920 ? h->elf.type == STT_GNU_IFUNC
14921 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14923 sreloc = htab->elf.irelplt;
14925 htab->local_ifunc_resolver = 1;
14926 else if (is_static_defined (&h->elf))
14927 htab->maybe_local_ifunc_resolver = 1;
14929 if (sreloc == NULL)
14932 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14935 loc = sreloc->contents;
14936 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14937 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14939 /* If this reloc is against an external symbol, it will
14940 be computed at runtime, so there's no need to do
14941 anything now. However, for the sake of prelink ensure
14942 that the section contents are a known value. */
14945 unresolved_reloc = FALSE;
14946 /* The value chosen here is quite arbitrary as ld.so
14947 ignores section contents except for the special
14948 case of .opd where the contents might be accessed
14949 before relocation. Choose zero, as that won't
14950 cause reloc overflow. */
14953 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14954 to improve backward compatibility with older
14956 if (r_type == R_PPC64_ADDR64)
14957 addend = outrel.r_addend;
14958 /* Adjust pc_relative relocs to have zero in *r_offset. */
14959 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14960 addend = outrel.r_offset;
14966 case R_PPC64_GLOB_DAT:
14967 case R_PPC64_JMP_SLOT:
14968 case R_PPC64_JMP_IREL:
14969 case R_PPC64_RELATIVE:
14970 /* We shouldn't ever see these dynamic relocs in relocatable
14972 /* Fall through. */
14974 case R_PPC64_PLTGOT16:
14975 case R_PPC64_PLTGOT16_DS:
14976 case R_PPC64_PLTGOT16_HA:
14977 case R_PPC64_PLTGOT16_HI:
14978 case R_PPC64_PLTGOT16_LO:
14979 case R_PPC64_PLTGOT16_LO_DS:
14980 case R_PPC64_PLTREL32:
14981 case R_PPC64_PLTREL64:
14982 /* These ones haven't been implemented yet. */
14984 info->callbacks->einfo
14985 /* xgettext:c-format */
14986 (_("%P: %B: %s is not supported for `%T'\n"),
14988 ppc64_elf_howto_table[r_type]->name, sym_name);
14990 bfd_set_error (bfd_error_invalid_operation);
14995 /* Multi-instruction sequences that access the TOC can be
14996 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14997 to nop; addi rb,r2,x; */
14998 howto = ppc64_elf_howto_table[(int) r_type];
15004 case R_PPC64_GOT_TLSLD16_HI:
15005 case R_PPC64_GOT_TLSGD16_HI:
15006 case R_PPC64_GOT_TPREL16_HI:
15007 case R_PPC64_GOT_DTPREL16_HI:
15008 case R_PPC64_GOT16_HI:
15009 case R_PPC64_TOC16_HI:
15010 /* These relocs would only be useful if building up an
15011 offset to later add to r2, perhaps in an indexed
15012 addressing mode instruction. Don't try to optimize.
15013 Unfortunately, the possibility of someone building up an
15014 offset like this or even with the HA relocs, means that
15015 we need to check the high insn when optimizing the low
15019 case R_PPC64_GOT_TLSLD16_HA:
15020 case R_PPC64_GOT_TLSGD16_HA:
15021 case R_PPC64_GOT_TPREL16_HA:
15022 case R_PPC64_GOT_DTPREL16_HA:
15023 case R_PPC64_GOT16_HA:
15024 case R_PPC64_TOC16_HA:
15025 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15026 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15028 bfd_byte *p = contents + (rel->r_offset & ~3);
15029 bfd_put_32 (input_bfd, NOP, p);
15033 case R_PPC64_GOT_TLSLD16_LO:
15034 case R_PPC64_GOT_TLSGD16_LO:
15035 case R_PPC64_GOT_TPREL16_LO_DS:
15036 case R_PPC64_GOT_DTPREL16_LO_DS:
15037 case R_PPC64_GOT16_LO:
15038 case R_PPC64_GOT16_LO_DS:
15039 case R_PPC64_TOC16_LO:
15040 case R_PPC64_TOC16_LO_DS:
15041 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15042 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15044 bfd_byte *p = contents + (rel->r_offset & ~3);
15045 insn = bfd_get_32 (input_bfd, p);
15046 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15048 /* Transform addic to addi when we change reg. */
15049 insn &= ~((0x3f << 26) | (0x1f << 16));
15050 insn |= (14u << 26) | (2 << 16);
15054 insn &= ~(0x1f << 16);
15057 bfd_put_32 (input_bfd, insn, p);
15061 case R_PPC64_TPREL16_HA:
15062 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15064 bfd_byte *p = contents + (rel->r_offset & ~3);
15065 insn = bfd_get_32 (input_bfd, p);
15066 if ((insn & ((0x3f << 26) | 0x1f << 16))
15067 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15068 /* xgettext:c-format */
15069 info->callbacks->minfo
15070 (_("%H: warning: %s unexpected insn %#x.\n"),
15071 input_bfd, input_section, rel->r_offset, howto->name, insn);
15073 bfd_put_32 (input_bfd, NOP, p);
15077 case R_PPC64_TPREL16_LO:
15078 case R_PPC64_TPREL16_LO_DS:
15079 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15081 bfd_byte *p = contents + (rel->r_offset & ~3);
15082 insn = bfd_get_32 (input_bfd, p);
15083 insn &= ~(0x1f << 16);
15085 bfd_put_32 (input_bfd, insn, p);
15090 /* Do any further special processing. */
15096 case R_PPC64_REL16_HA:
15097 case R_PPC64_REL16DX_HA:
15098 case R_PPC64_ADDR16_HA:
15099 case R_PPC64_ADDR16_HIGHA:
15100 case R_PPC64_ADDR16_HIGHERA:
15101 case R_PPC64_ADDR16_HIGHESTA:
15102 case R_PPC64_TOC16_HA:
15103 case R_PPC64_SECTOFF_HA:
15104 case R_PPC64_TPREL16_HA:
15105 case R_PPC64_TPREL16_HIGHA:
15106 case R_PPC64_TPREL16_HIGHERA:
15107 case R_PPC64_TPREL16_HIGHESTA:
15108 case R_PPC64_DTPREL16_HA:
15109 case R_PPC64_DTPREL16_HIGHA:
15110 case R_PPC64_DTPREL16_HIGHERA:
15111 case R_PPC64_DTPREL16_HIGHESTA:
15112 /* It's just possible that this symbol is a weak symbol
15113 that's not actually defined anywhere. In that case,
15114 'sec' would be NULL, and we should leave the symbol
15115 alone (it will be set to zero elsewhere in the link). */
15118 /* Fall through. */
15120 case R_PPC64_GOT16_HA:
15121 case R_PPC64_PLTGOT16_HA:
15122 case R_PPC64_PLT16_HA:
15123 case R_PPC64_GOT_TLSGD16_HA:
15124 case R_PPC64_GOT_TLSLD16_HA:
15125 case R_PPC64_GOT_TPREL16_HA:
15126 case R_PPC64_GOT_DTPREL16_HA:
15127 /* Add 0x10000 if sign bit in 0:15 is set.
15128 Bits 0:15 are not used. */
15132 case R_PPC64_ADDR16_DS:
15133 case R_PPC64_ADDR16_LO_DS:
15134 case R_PPC64_GOT16_DS:
15135 case R_PPC64_GOT16_LO_DS:
15136 case R_PPC64_PLT16_LO_DS:
15137 case R_PPC64_SECTOFF_DS:
15138 case R_PPC64_SECTOFF_LO_DS:
15139 case R_PPC64_TOC16_DS:
15140 case R_PPC64_TOC16_LO_DS:
15141 case R_PPC64_PLTGOT16_DS:
15142 case R_PPC64_PLTGOT16_LO_DS:
15143 case R_PPC64_GOT_TPREL16_DS:
15144 case R_PPC64_GOT_TPREL16_LO_DS:
15145 case R_PPC64_GOT_DTPREL16_DS:
15146 case R_PPC64_GOT_DTPREL16_LO_DS:
15147 case R_PPC64_TPREL16_DS:
15148 case R_PPC64_TPREL16_LO_DS:
15149 case R_PPC64_DTPREL16_DS:
15150 case R_PPC64_DTPREL16_LO_DS:
15151 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15153 /* If this reloc is against an lq, lxv, or stxv insn, then
15154 the value must be a multiple of 16. This is somewhat of
15155 a hack, but the "correct" way to do this by defining _DQ
15156 forms of all the _DS relocs bloats all reloc switches in
15157 this file. It doesn't make much sense to use these
15158 relocs in data, so testing the insn should be safe. */
15159 if ((insn & (0x3f << 26)) == (56u << 26)
15160 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15162 relocation += addend;
15163 addend = insn & (mask ^ 3);
15164 if ((relocation & mask) != 0)
15166 relocation ^= relocation & mask;
15167 info->callbacks->einfo
15168 /* xgettext:c-format */
15169 (_("%H: error: %s not a multiple of %u\n"),
15170 input_bfd, input_section, rel->r_offset,
15173 bfd_set_error (bfd_error_bad_value);
15180 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15181 because such sections are not SEC_ALLOC and thus ld.so will
15182 not process them. */
15183 if (unresolved_reloc
15184 && !((input_section->flags & SEC_DEBUGGING) != 0
15185 && h->elf.def_dynamic)
15186 && _bfd_elf_section_offset (output_bfd, info, input_section,
15187 rel->r_offset) != (bfd_vma) -1)
15189 info->callbacks->einfo
15190 /* xgettext:c-format */
15191 (_("%H: unresolvable %s against `%T'\n"),
15192 input_bfd, input_section, rel->r_offset,
15194 h->elf.root.root.string);
15198 /* 16-bit fields in insns mostly have signed values, but a
15199 few insns have 16-bit unsigned values. Really, we should
15200 have different reloc types. */
15201 if (howto->complain_on_overflow != complain_overflow_dont
15202 && howto->dst_mask == 0xffff
15203 && (input_section->flags & SEC_CODE) != 0)
15205 enum complain_overflow complain = complain_overflow_signed;
15207 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15208 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15209 complain = complain_overflow_bitfield;
15210 else if (howto->rightshift == 0
15211 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15212 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15213 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15214 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15215 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15216 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15217 complain = complain_overflow_unsigned;
15218 if (howto->complain_on_overflow != complain)
15220 alt_howto = *howto;
15221 alt_howto.complain_on_overflow = complain;
15222 howto = &alt_howto;
15226 if (r_type == R_PPC64_REL16DX_HA)
15228 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15229 if (rel->r_offset + 4 > input_section->size)
15230 r = bfd_reloc_outofrange;
15233 relocation += addend;
15234 relocation -= (rel->r_offset
15235 + input_section->output_offset
15236 + input_section->output_section->vma);
15237 relocation = (bfd_signed_vma) relocation >> 16;
15238 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15240 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15241 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15243 if (relocation + 0x8000 > 0xffff)
15244 r = bfd_reloc_overflow;
15248 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15249 rel->r_offset, relocation, addend);
15251 if (r != bfd_reloc_ok)
15253 char *more_info = NULL;
15254 const char *reloc_name = howto->name;
15256 if (reloc_dest != DEST_NORMAL)
15258 more_info = bfd_malloc (strlen (reloc_name) + 8);
15259 if (more_info != NULL)
15261 strcpy (more_info, reloc_name);
15262 strcat (more_info, (reloc_dest == DEST_OPD
15263 ? " (OPD)" : " (stub)"));
15264 reloc_name = more_info;
15268 if (r == bfd_reloc_overflow)
15270 /* On code like "if (foo) foo();" don't report overflow
15271 on a branch to zero when foo is undefined. */
15273 && (reloc_dest == DEST_STUB
15275 && (h->elf.root.type == bfd_link_hash_undefweak
15276 || h->elf.root.type == bfd_link_hash_undefined)
15277 && is_branch_reloc (r_type))))
15278 info->callbacks->reloc_overflow (info, &h->elf.root,
15279 sym_name, reloc_name,
15281 input_bfd, input_section,
15286 info->callbacks->einfo
15287 /* xgettext:c-format */
15288 (_("%H: %s against `%T': error %d\n"),
15289 input_bfd, input_section, rel->r_offset,
15290 reloc_name, sym_name, (int) r);
15293 if (more_info != NULL)
15303 Elf_Internal_Shdr *rel_hdr;
15304 size_t deleted = rel - wrel;
15306 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15307 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15308 if (rel_hdr->sh_size == 0)
15310 /* It is too late to remove an empty reloc section. Leave
15312 ??? What is wrong with an empty section??? */
15313 rel_hdr->sh_size = rel_hdr->sh_entsize;
15316 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15317 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15318 input_section->reloc_count -= deleted;
15321 /* If we're emitting relocations, then shortly after this function
15322 returns, reloc offsets and addends for this section will be
15323 adjusted. Worse, reloc symbol indices will be for the output
15324 file rather than the input. Save a copy of the relocs for
15325 opd_entry_value. */
15326 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15329 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15330 rel = bfd_alloc (input_bfd, amt);
15331 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15332 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15335 memcpy (rel, relocs, amt);
15340 /* Adjust the value of any local symbols in opd sections. */
15343 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15344 const char *name ATTRIBUTE_UNUSED,
15345 Elf_Internal_Sym *elfsym,
15346 asection *input_sec,
15347 struct elf_link_hash_entry *h)
15349 struct _opd_sec_data *opd;
15356 opd = get_opd_info (input_sec);
15357 if (opd == NULL || opd->adjust == NULL)
15360 value = elfsym->st_value - input_sec->output_offset;
15361 if (!bfd_link_relocatable (info))
15362 value -= input_sec->output_section->vma;
15364 adjust = opd->adjust[OPD_NDX (value)];
15368 elfsym->st_value += adjust;
15372 /* Finish up dynamic symbol handling. We set the contents of various
15373 dynamic sections here. */
15376 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15377 struct bfd_link_info *info,
15378 struct elf_link_hash_entry *h,
15379 Elf_Internal_Sym *sym)
15381 struct ppc_link_hash_table *htab;
15382 struct plt_entry *ent;
15383 Elf_Internal_Rela rela;
15386 htab = ppc_hash_table (info);
15390 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15391 if (ent->plt.offset != (bfd_vma) -1)
15393 /* This symbol has an entry in the procedure linkage
15394 table. Set it up. */
15395 if (!htab->elf.dynamic_sections_created
15396 || h->dynindx == -1)
15398 BFD_ASSERT (h->type == STT_GNU_IFUNC
15400 && (h->root.type == bfd_link_hash_defined
15401 || h->root.type == bfd_link_hash_defweak));
15402 rela.r_offset = (htab->elf.iplt->output_section->vma
15403 + htab->elf.iplt->output_offset
15404 + ent->plt.offset);
15406 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15408 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15409 rela.r_addend = (h->root.u.def.value
15410 + h->root.u.def.section->output_offset
15411 + h->root.u.def.section->output_section->vma
15413 loc = (htab->elf.irelplt->contents
15414 + (htab->elf.irelplt->reloc_count++
15415 * sizeof (Elf64_External_Rela)));
15416 htab->local_ifunc_resolver = 1;
15420 rela.r_offset = (htab->elf.splt->output_section->vma
15421 + htab->elf.splt->output_offset
15422 + ent->plt.offset);
15423 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15424 rela.r_addend = ent->addend;
15425 loc = (htab->elf.srelplt->contents
15426 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15427 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15428 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15429 htab->maybe_local_ifunc_resolver = 1;
15431 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15433 if (!htab->opd_abi)
15435 if (!h->def_regular)
15437 /* Mark the symbol as undefined, rather than as
15438 defined in glink. Leave the value if there were
15439 any relocations where pointer equality matters
15440 (this is a clue for the dynamic linker, to make
15441 function pointer comparisons work between an
15442 application and shared library), otherwise set it
15444 sym->st_shndx = SHN_UNDEF;
15445 if (!h->pointer_equality_needed)
15447 else if (!h->ref_regular_nonweak)
15449 /* This breaks function pointer comparisons, but
15450 that is better than breaking tests for a NULL
15451 function pointer. */
15460 /* This symbol needs a copy reloc. Set it up. */
15463 if (h->dynindx == -1
15464 || (h->root.type != bfd_link_hash_defined
15465 && h->root.type != bfd_link_hash_defweak)
15466 || htab->elf.srelbss == NULL
15467 || htab->elf.sreldynrelro == NULL)
15470 rela.r_offset = (h->root.u.def.value
15471 + h->root.u.def.section->output_section->vma
15472 + h->root.u.def.section->output_offset);
15473 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15475 if (h->root.u.def.section == htab->elf.sdynrelro)
15476 srel = htab->elf.sreldynrelro;
15478 srel = htab->elf.srelbss;
15479 loc = srel->contents;
15480 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15481 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15487 /* Used to decide how to sort relocs in an optimal manner for the
15488 dynamic linker, before writing them out. */
15490 static enum elf_reloc_type_class
15491 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15492 const asection *rel_sec,
15493 const Elf_Internal_Rela *rela)
15495 enum elf_ppc64_reloc_type r_type;
15496 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15498 if (rel_sec == htab->elf.irelplt)
15499 return reloc_class_ifunc;
15501 r_type = ELF64_R_TYPE (rela->r_info);
15504 case R_PPC64_RELATIVE:
15505 return reloc_class_relative;
15506 case R_PPC64_JMP_SLOT:
15507 return reloc_class_plt;
15509 return reloc_class_copy;
15511 return reloc_class_normal;
15515 /* Finish up the dynamic sections. */
15518 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15519 struct bfd_link_info *info)
15521 struct ppc_link_hash_table *htab;
15525 htab = ppc_hash_table (info);
15529 dynobj = htab->elf.dynobj;
15530 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15532 if (htab->elf.dynamic_sections_created)
15534 Elf64_External_Dyn *dyncon, *dynconend;
15536 if (sdyn == NULL || htab->elf.sgot == NULL)
15539 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15540 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15541 for (; dyncon < dynconend; dyncon++)
15543 Elf_Internal_Dyn dyn;
15546 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15553 case DT_PPC64_GLINK:
15555 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15556 /* We stupidly defined DT_PPC64_GLINK to be the start
15557 of glink rather than the first entry point, which is
15558 what ld.so needs, and now have a bigger stub to
15559 support automatic multiple TOCs. */
15560 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15564 s = bfd_get_section_by_name (output_bfd, ".opd");
15567 dyn.d_un.d_ptr = s->vma;
15571 if (htab->do_multi_toc && htab->multi_toc_needed)
15572 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15573 if (htab->has_plt_localentry0)
15574 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15577 case DT_PPC64_OPDSZ:
15578 s = bfd_get_section_by_name (output_bfd, ".opd");
15581 dyn.d_un.d_val = s->size;
15585 s = htab->elf.splt;
15586 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15590 s = htab->elf.srelplt;
15591 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15595 dyn.d_un.d_val = htab->elf.srelplt->size;
15599 if (htab->local_ifunc_resolver)
15600 info->callbacks->einfo
15601 (_("%X%P: text relocations and GNU indirect "
15602 "functions will result in a segfault at runtime\n"));
15603 else if (htab->maybe_local_ifunc_resolver)
15604 info->callbacks->einfo
15605 (_("%P: warning: text relocations and GNU indirect "
15606 "functions may result in a segfault at runtime\n"));
15610 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15614 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15615 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15617 /* Fill in the first entry in the global offset table.
15618 We use it to hold the link-time TOCbase. */
15619 bfd_put_64 (output_bfd,
15620 elf_gp (output_bfd) + TOC_BASE_OFF,
15621 htab->elf.sgot->contents);
15623 /* Set .got entry size. */
15624 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15627 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15628 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15630 /* Set .plt entry size. */
15631 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15632 = PLT_ENTRY_SIZE (htab);
15635 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15636 brlt ourselves if emitrelocations. */
15637 if (htab->brlt != NULL
15638 && htab->brlt->reloc_count != 0
15639 && !_bfd_elf_link_output_relocs (output_bfd,
15641 elf_section_data (htab->brlt)->rela.hdr,
15642 elf_section_data (htab->brlt)->relocs,
15646 if (htab->glink != NULL
15647 && htab->glink->reloc_count != 0
15648 && !_bfd_elf_link_output_relocs (output_bfd,
15650 elf_section_data (htab->glink)->rela.hdr,
15651 elf_section_data (htab->glink)->relocs,
15655 if (htab->glink_eh_frame != NULL
15656 && htab->glink_eh_frame->size != 0)
15660 struct map_stub *group;
15663 p = htab->glink_eh_frame->contents;
15664 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15666 for (group = htab->group; group != NULL; group = group->next)
15667 if (group->stub_sec != NULL)
15669 /* Offset to stub section. */
15670 val = (group->stub_sec->output_section->vma
15671 + group->stub_sec->output_offset);
15672 val -= (htab->glink_eh_frame->output_section->vma
15673 + htab->glink_eh_frame->output_offset
15674 + (p + 8 - htab->glink_eh_frame->contents));
15675 if (val + 0x80000000 > 0xffffffff)
15677 info->callbacks->einfo
15678 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15679 group->stub_sec->name);
15682 bfd_put_32 (dynobj, val, p + 8);
15683 p += stub_eh_frame_size (group, align);
15685 if (htab->glink != NULL && htab->glink->size != 0)
15687 /* Offset to .glink. */
15688 val = (htab->glink->output_section->vma
15689 + htab->glink->output_offset
15691 val -= (htab->glink_eh_frame->output_section->vma
15692 + htab->glink_eh_frame->output_offset
15693 + (p + 8 - htab->glink_eh_frame->contents));
15694 if (val + 0x80000000 > 0xffffffff)
15696 info->callbacks->einfo
15697 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15698 htab->glink->name);
15701 bfd_put_32 (dynobj, val, p + 8);
15702 p += (24 + align - 1) & -align;
15705 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15706 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15707 htab->glink_eh_frame,
15708 htab->glink_eh_frame->contents))
15712 /* We need to handle writing out multiple GOT sections ourselves,
15713 since we didn't add them to DYNOBJ. We know dynobj is the first
15715 while ((dynobj = dynobj->link.next) != NULL)
15719 if (!is_ppc64_elf (dynobj))
15722 s = ppc64_elf_tdata (dynobj)->got;
15725 && s->output_section != bfd_abs_section_ptr
15726 && !bfd_set_section_contents (output_bfd, s->output_section,
15727 s->contents, s->output_offset,
15730 s = ppc64_elf_tdata (dynobj)->relgot;
15733 && s->output_section != bfd_abs_section_ptr
15734 && !bfd_set_section_contents (output_bfd, s->output_section,
15735 s->contents, s->output_offset,
15743 #include "elf64-target.h"
15745 /* FreeBSD support */
15747 #undef TARGET_LITTLE_SYM
15748 #undef TARGET_LITTLE_NAME
15750 #undef TARGET_BIG_SYM
15751 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15752 #undef TARGET_BIG_NAME
15753 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15756 #define ELF_OSABI ELFOSABI_FREEBSD
15759 #define elf64_bed elf64_powerpc_fbsd_bed
15761 #include "elf64-target.h"