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 called to transfer flags for a weakdef during processing
4765 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4766 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4767 if (!(ELIMINATE_COPY_RELOCS
4768 && eind->elf.root.type != bfd_link_hash_indirect
4769 && edir->elf.dynamic_adjusted))
4770 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4772 if (edir->elf.versioned != versioned_hidden)
4773 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4774 edir->elf.ref_regular |= eind->elf.ref_regular;
4775 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4776 edir->elf.needs_plt |= eind->elf.needs_plt;
4777 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4779 /* If we were called to copy over info for a weak sym, don't copy
4780 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4781 in order to simplify readonly_dynrelocs and save a field in the
4782 symbol hash entry, but that means dyn_relocs can't be used in any
4783 tests about a specific symbol, or affect other symbol flags which
4785 if (eind->elf.root.type != bfd_link_hash_indirect)
4788 /* Copy over any dynamic relocs we may have on the indirect sym. */
4789 if (eind->dyn_relocs != NULL)
4791 if (edir->dyn_relocs != NULL)
4793 struct elf_dyn_relocs **pp;
4794 struct elf_dyn_relocs *p;
4796 /* Add reloc counts against the indirect sym to the direct sym
4797 list. Merge any entries against the same section. */
4798 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4800 struct elf_dyn_relocs *q;
4802 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4803 if (q->sec == p->sec)
4805 q->pc_count += p->pc_count;
4806 q->count += p->count;
4813 *pp = edir->dyn_relocs;
4816 edir->dyn_relocs = eind->dyn_relocs;
4817 eind->dyn_relocs = NULL;
4820 /* Copy over got entries that we may have already seen to the
4821 symbol which just became indirect. */
4822 if (eind->elf.got.glist != NULL)
4824 if (edir->elf.got.glist != NULL)
4826 struct got_entry **entp;
4827 struct got_entry *ent;
4829 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4831 struct got_entry *dent;
4833 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4834 if (dent->addend == ent->addend
4835 && dent->owner == ent->owner
4836 && dent->tls_type == ent->tls_type)
4838 dent->got.refcount += ent->got.refcount;
4845 *entp = edir->elf.got.glist;
4848 edir->elf.got.glist = eind->elf.got.glist;
4849 eind->elf.got.glist = NULL;
4852 /* And plt entries. */
4853 move_plt_plist (eind, edir);
4855 if (eind->elf.dynindx != -1)
4857 if (edir->elf.dynindx != -1)
4858 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4859 edir->elf.dynstr_index);
4860 edir->elf.dynindx = eind->elf.dynindx;
4861 edir->elf.dynstr_index = eind->elf.dynstr_index;
4862 eind->elf.dynindx = -1;
4863 eind->elf.dynstr_index = 0;
4867 /* Find the function descriptor hash entry from the given function code
4868 hash entry FH. Link the entries via their OH fields. */
4870 static struct ppc_link_hash_entry *
4871 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4873 struct ppc_link_hash_entry *fdh = fh->oh;
4877 const char *fd_name = fh->elf.root.root.string + 1;
4879 fdh = (struct ppc_link_hash_entry *)
4880 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4884 fdh->is_func_descriptor = 1;
4890 fdh = ppc_follow_link (fdh);
4891 fdh->is_func_descriptor = 1;
4896 /* Make a fake function descriptor sym for the undefined code sym FH. */
4898 static struct ppc_link_hash_entry *
4899 make_fdh (struct bfd_link_info *info,
4900 struct ppc_link_hash_entry *fh)
4902 bfd *abfd = fh->elf.root.u.undef.abfd;
4903 struct bfd_link_hash_entry *bh = NULL;
4904 struct ppc_link_hash_entry *fdh;
4905 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4909 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4910 fh->elf.root.root.string + 1,
4911 flags, bfd_und_section_ptr, 0,
4912 NULL, FALSE, FALSE, &bh))
4915 fdh = (struct ppc_link_hash_entry *) bh;
4916 fdh->elf.non_elf = 0;
4918 fdh->is_func_descriptor = 1;
4925 /* Fix function descriptor symbols defined in .opd sections to be
4929 ppc64_elf_add_symbol_hook (bfd *ibfd,
4930 struct bfd_link_info *info,
4931 Elf_Internal_Sym *isym,
4933 flagword *flags ATTRIBUTE_UNUSED,
4937 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4938 && (ibfd->flags & DYNAMIC) == 0
4939 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4940 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4943 && strcmp ((*sec)->name, ".opd") == 0)
4947 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4948 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4949 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4951 /* If the symbol is a function defined in .opd, and the function
4952 code is in a discarded group, let it appear to be undefined. */
4953 if (!bfd_link_relocatable (info)
4954 && (*sec)->reloc_count != 0
4955 && opd_entry_value (*sec, *value, &code_sec, NULL,
4956 FALSE) != (bfd_vma) -1
4957 && discarded_section (code_sec))
4959 *sec = bfd_und_section_ptr;
4960 isym->st_shndx = SHN_UNDEF;
4963 else if (*sec != NULL
4964 && strcmp ((*sec)->name, ".toc") == 0
4965 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4967 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4969 htab->params->object_in_toc = 1;
4972 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4974 if (abiversion (ibfd) == 0)
4975 set_abiversion (ibfd, 2);
4976 else if (abiversion (ibfd) == 1)
4978 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4979 " for ABI version 1\n"), name);
4980 bfd_set_error (bfd_error_bad_value);
4988 /* Merge non-visibility st_other attributes: local entry point. */
4991 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4992 const Elf_Internal_Sym *isym,
4993 bfd_boolean definition,
4994 bfd_boolean dynamic)
4996 if (definition && (!dynamic || !h->def_regular))
4997 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4998 | ELF_ST_VISIBILITY (h->other));
5001 /* Hook called on merging a symbol. We use this to clear "fake" since
5002 we now have a real symbol. */
5005 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5006 const Elf_Internal_Sym *isym,
5007 asection **psec ATTRIBUTE_UNUSED,
5008 bfd_boolean newdef ATTRIBUTE_UNUSED,
5009 bfd_boolean olddef ATTRIBUTE_UNUSED,
5010 bfd *oldbfd ATTRIBUTE_UNUSED,
5011 const asection *oldsec ATTRIBUTE_UNUSED)
5013 ((struct ppc_link_hash_entry *) h)->fake = 0;
5014 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5015 ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1;
5019 /* This function makes an old ABI object reference to ".bar" cause the
5020 inclusion of a new ABI object archive that defines "bar".
5021 NAME is a symbol defined in an archive. Return a symbol in the hash
5022 table that might be satisfied by the archive symbols. */
5024 static struct elf_link_hash_entry *
5025 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5026 struct bfd_link_info *info,
5029 struct elf_link_hash_entry *h;
5033 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5035 /* Don't return this sym if it is a fake function descriptor
5036 created by add_symbol_adjust. */
5037 && !((struct ppc_link_hash_entry *) h)->fake)
5043 len = strlen (name);
5044 dot_name = bfd_alloc (abfd, len + 2);
5045 if (dot_name == NULL)
5046 return (struct elf_link_hash_entry *) 0 - 1;
5048 memcpy (dot_name + 1, name, len + 1);
5049 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5050 bfd_release (abfd, dot_name);
5054 /* This function satisfies all old ABI object references to ".bar" if a
5055 new ABI object defines "bar". Well, at least, undefined dot symbols
5056 are made weak. This stops later archive searches from including an
5057 object if we already have a function descriptor definition. It also
5058 prevents the linker complaining about undefined symbols.
5059 We also check and correct mismatched symbol visibility here. The
5060 most restrictive visibility of the function descriptor and the
5061 function entry symbol is used. */
5064 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5066 struct ppc_link_hash_table *htab;
5067 struct ppc_link_hash_entry *fdh;
5069 if (eh->elf.root.type == bfd_link_hash_warning)
5070 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5072 if (eh->elf.root.type == bfd_link_hash_indirect)
5075 if (eh->elf.root.root.string[0] != '.')
5078 htab = ppc_hash_table (info);
5082 fdh = lookup_fdh (eh, htab);
5084 && !bfd_link_relocatable (info)
5085 && (eh->elf.root.type == bfd_link_hash_undefined
5086 || eh->elf.root.type == bfd_link_hash_undefweak)
5087 && eh->elf.ref_regular)
5089 /* Make an undefined function descriptor sym, in order to
5090 pull in an --as-needed shared lib. Archives are handled
5092 fdh = make_fdh (info, eh);
5099 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5100 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5102 /* Make both descriptor and entry symbol have the most
5103 constraining visibility of either symbol. */
5104 if (entry_vis < descr_vis)
5105 fdh->elf.other += entry_vis - descr_vis;
5106 else if (entry_vis > descr_vis)
5107 eh->elf.other += descr_vis - entry_vis;
5109 /* Propagate reference flags from entry symbol to function
5110 descriptor symbol. */
5111 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5112 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5113 fdh->elf.ref_regular |= eh->elf.ref_regular;
5114 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5116 if (!fdh->elf.forced_local
5117 && fdh->elf.dynindx == -1
5118 && fdh->elf.versioned != versioned_hidden
5119 && (bfd_link_dll (info)
5120 || fdh->elf.def_dynamic
5121 || fdh->elf.ref_dynamic)
5122 && (eh->elf.ref_regular
5123 || eh->elf.def_regular))
5125 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5133 /* Set up opd section info and abiversion for IBFD, and process list
5134 of dot-symbols we made in link_hash_newfunc. */
5137 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5139 struct ppc_link_hash_table *htab;
5140 struct ppc_link_hash_entry **p, *eh;
5141 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5143 if (opd != NULL && opd->size != 0)
5145 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5146 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5148 if (abiversion (ibfd) == 0)
5149 set_abiversion (ibfd, 1);
5150 else if (abiversion (ibfd) >= 2)
5152 /* xgettext:c-format */
5153 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5155 ibfd, abiversion (ibfd));
5156 bfd_set_error (bfd_error_bad_value);
5161 if (is_ppc64_elf (info->output_bfd))
5163 /* For input files without an explicit abiversion in e_flags
5164 we should have flagged any with symbol st_other bits set
5165 as ELFv1 and above flagged those with .opd as ELFv2.
5166 Set the output abiversion if not yet set, and for any input
5167 still ambiguous, take its abiversion from the output.
5168 Differences in ABI are reported later. */
5169 if (abiversion (info->output_bfd) == 0)
5170 set_abiversion (info->output_bfd, abiversion (ibfd));
5171 else if (abiversion (ibfd) == 0)
5172 set_abiversion (ibfd, abiversion (info->output_bfd));
5175 htab = ppc_hash_table (info);
5179 if (opd != NULL && opd->size != 0
5180 && (ibfd->flags & DYNAMIC) == 0
5181 && (opd->flags & SEC_RELOC) != 0
5182 && opd->reloc_count != 0
5183 && !bfd_is_abs_section (opd->output_section)
5184 && info->gc_sections)
5186 /* Garbage collection needs some extra help with .opd sections.
5187 We don't want to necessarily keep everything referenced by
5188 relocs in .opd, as that would keep all functions. Instead,
5189 if we reference an .opd symbol (a function descriptor), we
5190 want to keep the function code symbol's section. This is
5191 easy for global symbols, but for local syms we need to keep
5192 information about the associated function section. */
5194 asection **opd_sym_map;
5195 Elf_Internal_Shdr *symtab_hdr;
5196 Elf_Internal_Rela *relocs, *rel_end, *rel;
5198 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5199 opd_sym_map = bfd_zalloc (ibfd, amt);
5200 if (opd_sym_map == NULL)
5202 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5203 relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL,
5207 symtab_hdr = &elf_symtab_hdr (ibfd);
5208 rel_end = relocs + opd->reloc_count - 1;
5209 for (rel = relocs; rel < rel_end; rel++)
5211 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
5212 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
5214 if (r_type == R_PPC64_ADDR64
5215 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC
5216 && r_symndx < symtab_hdr->sh_info)
5218 Elf_Internal_Sym *isym;
5221 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx);
5224 if (elf_section_data (opd)->relocs != relocs)
5229 s = bfd_section_from_elf_index (ibfd, isym->st_shndx);
5230 if (s != NULL && s != opd)
5231 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5234 if (elf_section_data (opd)->relocs != relocs)
5238 p = &htab->dot_syms;
5239 while ((eh = *p) != NULL)
5242 if (&eh->elf == htab->elf.hgot)
5244 else if (htab->elf.hgot == NULL
5245 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5246 htab->elf.hgot = &eh->elf;
5247 else if (abiversion (ibfd) <= 1)
5249 htab->need_func_desc_adj = 1;
5250 if (!add_symbol_adjust (eh, info))
5253 p = &eh->u.next_dot_sym;
5258 /* Undo hash table changes when an --as-needed input file is determined
5259 not to be needed. */
5262 ppc64_elf_notice_as_needed (bfd *ibfd,
5263 struct bfd_link_info *info,
5264 enum notice_asneeded_action act)
5266 if (act == notice_not_needed)
5268 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5273 htab->dot_syms = NULL;
5275 return _bfd_elf_notice_as_needed (ibfd, info, act);
5278 /* If --just-symbols against a final linked binary, then assume we need
5279 toc adjusting stubs when calling functions defined there. */
5282 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5284 if ((sec->flags & SEC_CODE) != 0
5285 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5286 && is_ppc64_elf (sec->owner))
5288 if (abiversion (sec->owner) >= 2
5289 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5290 sec->has_toc_reloc = 1;
5292 _bfd_elf_link_just_syms (sec, info);
5295 static struct plt_entry **
5296 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5297 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5299 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5300 struct plt_entry **local_plt;
5301 unsigned char *local_got_tls_masks;
5303 if (local_got_ents == NULL)
5305 bfd_size_type size = symtab_hdr->sh_info;
5307 size *= (sizeof (*local_got_ents)
5308 + sizeof (*local_plt)
5309 + sizeof (*local_got_tls_masks));
5310 local_got_ents = bfd_zalloc (abfd, size);
5311 if (local_got_ents == NULL)
5313 elf_local_got_ents (abfd) = local_got_ents;
5316 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5318 struct got_entry *ent;
5320 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5321 if (ent->addend == r_addend
5322 && ent->owner == abfd
5323 && ent->tls_type == tls_type)
5327 bfd_size_type amt = sizeof (*ent);
5328 ent = bfd_alloc (abfd, amt);
5331 ent->next = local_got_ents[r_symndx];
5332 ent->addend = r_addend;
5334 ent->tls_type = tls_type;
5335 ent->is_indirect = FALSE;
5336 ent->got.refcount = 0;
5337 local_got_ents[r_symndx] = ent;
5339 ent->got.refcount += 1;
5342 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5343 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5344 local_got_tls_masks[r_symndx] |= tls_type;
5346 return local_plt + r_symndx;
5350 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5352 struct plt_entry *ent;
5354 for (ent = *plist; ent != NULL; ent = ent->next)
5355 if (ent->addend == addend)
5359 bfd_size_type amt = sizeof (*ent);
5360 ent = bfd_alloc (abfd, amt);
5364 ent->addend = addend;
5365 ent->plt.refcount = 0;
5368 ent->plt.refcount += 1;
5373 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5375 return (r_type == R_PPC64_REL24
5376 || r_type == R_PPC64_REL14
5377 || r_type == R_PPC64_REL14_BRTAKEN
5378 || r_type == R_PPC64_REL14_BRNTAKEN
5379 || r_type == R_PPC64_ADDR24
5380 || r_type == R_PPC64_ADDR14
5381 || r_type == R_PPC64_ADDR14_BRTAKEN
5382 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5385 /* Look through the relocs for a section during the first phase, and
5386 calculate needed space in the global offset table, procedure
5387 linkage table, and dynamic reloc sections. */
5390 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5391 asection *sec, const Elf_Internal_Rela *relocs)
5393 struct ppc_link_hash_table *htab;
5394 Elf_Internal_Shdr *symtab_hdr;
5395 struct elf_link_hash_entry **sym_hashes;
5396 const Elf_Internal_Rela *rel;
5397 const Elf_Internal_Rela *rel_end;
5399 struct elf_link_hash_entry *tga, *dottga;
5402 if (bfd_link_relocatable (info))
5405 /* Don't do anything special with non-loaded, non-alloced sections.
5406 In particular, any relocs in such sections should not affect GOT
5407 and PLT reference counting (ie. we don't allow them to create GOT
5408 or PLT entries), there's no possibility or desire to optimize TLS
5409 relocs, and there's not much point in propagating relocs to shared
5410 libs that the dynamic linker won't relocate. */
5411 if ((sec->flags & SEC_ALLOC) == 0)
5414 BFD_ASSERT (is_ppc64_elf (abfd));
5416 htab = ppc_hash_table (info);
5420 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5421 FALSE, FALSE, TRUE);
5422 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5423 FALSE, FALSE, TRUE);
5424 symtab_hdr = &elf_symtab_hdr (abfd);
5425 sym_hashes = elf_sym_hashes (abfd);
5427 is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd;
5428 rel_end = relocs + sec->reloc_count;
5429 for (rel = relocs; rel < rel_end; rel++)
5431 unsigned long r_symndx;
5432 struct elf_link_hash_entry *h;
5433 enum elf_ppc64_reloc_type r_type;
5435 struct _ppc64_elf_section_data *ppc64_sec;
5436 struct plt_entry **ifunc, **plt_list;
5438 r_symndx = ELF64_R_SYM (rel->r_info);
5439 if (r_symndx < symtab_hdr->sh_info)
5443 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5444 h = elf_follow_link (h);
5446 if (h == htab->elf.hgot)
5447 sec->has_toc_reloc = 1;
5454 if (h->type == STT_GNU_IFUNC)
5457 ifunc = &h->plt.plist;
5462 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5467 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5469 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5470 rel->r_addend, PLT_IFUNC);
5476 r_type = ELF64_R_TYPE (rel->r_info);
5481 /* These special tls relocs tie a call to __tls_get_addr with
5482 its parameter symbol. */
5485 case R_PPC64_GOT_TLSLD16:
5486 case R_PPC64_GOT_TLSLD16_LO:
5487 case R_PPC64_GOT_TLSLD16_HI:
5488 case R_PPC64_GOT_TLSLD16_HA:
5489 tls_type = TLS_TLS | TLS_LD;
5492 case R_PPC64_GOT_TLSGD16:
5493 case R_PPC64_GOT_TLSGD16_LO:
5494 case R_PPC64_GOT_TLSGD16_HI:
5495 case R_PPC64_GOT_TLSGD16_HA:
5496 tls_type = TLS_TLS | TLS_GD;
5499 case R_PPC64_GOT_TPREL16_DS:
5500 case R_PPC64_GOT_TPREL16_LO_DS:
5501 case R_PPC64_GOT_TPREL16_HI:
5502 case R_PPC64_GOT_TPREL16_HA:
5503 if (bfd_link_dll (info))
5504 info->flags |= DF_STATIC_TLS;
5505 tls_type = TLS_TLS | TLS_TPREL;
5508 case R_PPC64_GOT_DTPREL16_DS:
5509 case R_PPC64_GOT_DTPREL16_LO_DS:
5510 case R_PPC64_GOT_DTPREL16_HI:
5511 case R_PPC64_GOT_DTPREL16_HA:
5512 tls_type = TLS_TLS | TLS_DTPREL;
5514 sec->has_tls_reloc = 1;
5518 case R_PPC64_GOT16_DS:
5519 case R_PPC64_GOT16_HA:
5520 case R_PPC64_GOT16_HI:
5521 case R_PPC64_GOT16_LO:
5522 case R_PPC64_GOT16_LO_DS:
5523 /* This symbol requires a global offset table entry. */
5524 sec->has_toc_reloc = 1;
5525 if (r_type == R_PPC64_GOT_TLSLD16
5526 || r_type == R_PPC64_GOT_TLSGD16
5527 || r_type == R_PPC64_GOT_TPREL16_DS
5528 || r_type == R_PPC64_GOT_DTPREL16_DS
5529 || r_type == R_PPC64_GOT16
5530 || r_type == R_PPC64_GOT16_DS)
5532 htab->do_multi_toc = 1;
5533 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5536 if (ppc64_elf_tdata (abfd)->got == NULL
5537 && !create_got_section (abfd, info))
5542 struct ppc_link_hash_entry *eh;
5543 struct got_entry *ent;
5545 eh = (struct ppc_link_hash_entry *) h;
5546 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5547 if (ent->addend == rel->r_addend
5548 && ent->owner == abfd
5549 && ent->tls_type == tls_type)
5553 bfd_size_type amt = sizeof (*ent);
5554 ent = bfd_alloc (abfd, amt);
5557 ent->next = eh->elf.got.glist;
5558 ent->addend = rel->r_addend;
5560 ent->tls_type = tls_type;
5561 ent->is_indirect = FALSE;
5562 ent->got.refcount = 0;
5563 eh->elf.got.glist = ent;
5565 ent->got.refcount += 1;
5566 eh->tls_mask |= tls_type;
5569 /* This is a global offset table entry for a local symbol. */
5570 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5571 rel->r_addend, tls_type))
5574 /* We may also need a plt entry if the symbol turns out to be
5576 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5578 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5583 case R_PPC64_PLT16_HA:
5584 case R_PPC64_PLT16_HI:
5585 case R_PPC64_PLT16_LO:
5588 /* This symbol requires a procedure linkage table entry. */
5593 if (h->root.root.string[0] == '.'
5594 && h->root.root.string[1] != '\0')
5595 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5596 plt_list = &h->plt.plist;
5598 if (plt_list == NULL)
5600 /* It does not make sense to have a procedure linkage
5601 table entry for a non-ifunc local symbol. */
5602 info->callbacks->einfo
5603 /* xgettext:c-format */
5604 (_("%H: %s reloc against local symbol\n"),
5605 abfd, sec, rel->r_offset,
5606 ppc64_elf_howto_table[r_type]->name);
5607 bfd_set_error (bfd_error_bad_value);
5610 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5614 /* The following relocations don't need to propagate the
5615 relocation if linking a shared object since they are
5616 section relative. */
5617 case R_PPC64_SECTOFF:
5618 case R_PPC64_SECTOFF_LO:
5619 case R_PPC64_SECTOFF_HI:
5620 case R_PPC64_SECTOFF_HA:
5621 case R_PPC64_SECTOFF_DS:
5622 case R_PPC64_SECTOFF_LO_DS:
5623 case R_PPC64_DTPREL16:
5624 case R_PPC64_DTPREL16_LO:
5625 case R_PPC64_DTPREL16_HI:
5626 case R_PPC64_DTPREL16_HA:
5627 case R_PPC64_DTPREL16_DS:
5628 case R_PPC64_DTPREL16_LO_DS:
5629 case R_PPC64_DTPREL16_HIGH:
5630 case R_PPC64_DTPREL16_HIGHA:
5631 case R_PPC64_DTPREL16_HIGHER:
5632 case R_PPC64_DTPREL16_HIGHERA:
5633 case R_PPC64_DTPREL16_HIGHEST:
5634 case R_PPC64_DTPREL16_HIGHESTA:
5639 case R_PPC64_REL16_LO:
5640 case R_PPC64_REL16_HI:
5641 case R_PPC64_REL16_HA:
5642 case R_PPC64_REL16DX_HA:
5645 /* Not supported as a dynamic relocation. */
5646 case R_PPC64_ADDR64_LOCAL:
5647 if (bfd_link_pic (info))
5649 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5651 /* xgettext:c-format */
5652 info->callbacks->einfo (_("%H: %s reloc unsupported "
5653 "in shared libraries and PIEs.\n"),
5654 abfd, sec, rel->r_offset,
5655 ppc64_elf_howto_table[r_type]->name);
5656 bfd_set_error (bfd_error_bad_value);
5662 case R_PPC64_TOC16_DS:
5663 htab->do_multi_toc = 1;
5664 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5666 case R_PPC64_TOC16_LO:
5667 case R_PPC64_TOC16_HI:
5668 case R_PPC64_TOC16_HA:
5669 case R_PPC64_TOC16_LO_DS:
5670 sec->has_toc_reloc = 1;
5677 /* This relocation describes the C++ object vtable hierarchy.
5678 Reconstruct it for later use during GC. */
5679 case R_PPC64_GNU_VTINHERIT:
5680 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5684 /* This relocation describes which C++ vtable entries are actually
5685 used. Record for later use during GC. */
5686 case R_PPC64_GNU_VTENTRY:
5687 BFD_ASSERT (h != NULL);
5689 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5694 case R_PPC64_REL14_BRTAKEN:
5695 case R_PPC64_REL14_BRNTAKEN:
5697 asection *dest = NULL;
5699 /* Heuristic: If jumping outside our section, chances are
5700 we are going to need a stub. */
5703 /* If the sym is weak it may be overridden later, so
5704 don't assume we know where a weak sym lives. */
5705 if (h->root.type == bfd_link_hash_defined)
5706 dest = h->root.u.def.section;
5710 Elf_Internal_Sym *isym;
5712 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5717 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5721 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5730 if (h->root.root.string[0] == '.'
5731 && h->root.root.string[1] != '\0')
5732 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5734 if (h == tga || h == dottga)
5736 sec->has_tls_reloc = 1;
5738 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5739 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5740 /* We have a new-style __tls_get_addr call with
5744 /* Mark this section as having an old-style call. */
5745 sec->has_tls_get_addr_call = 1;
5747 plt_list = &h->plt.plist;
5750 /* We may need a .plt entry if the function this reloc
5751 refers to is in a shared lib. */
5753 && !update_plt_info (abfd, plt_list, rel->r_addend))
5757 case R_PPC64_ADDR14:
5758 case R_PPC64_ADDR14_BRNTAKEN:
5759 case R_PPC64_ADDR14_BRTAKEN:
5760 case R_PPC64_ADDR24:
5763 case R_PPC64_TPREL64:
5764 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5765 if (bfd_link_dll (info))
5766 info->flags |= DF_STATIC_TLS;
5769 case R_PPC64_DTPMOD64:
5770 if (rel + 1 < rel_end
5771 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5772 && rel[1].r_offset == rel->r_offset + 8)
5773 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5775 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5778 case R_PPC64_DTPREL64:
5779 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5781 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5782 && rel[-1].r_offset == rel->r_offset - 8)
5783 /* This is the second reloc of a dtpmod, dtprel pair.
5784 Don't mark with TLS_DTPREL. */
5788 sec->has_tls_reloc = 1;
5791 struct ppc_link_hash_entry *eh;
5792 eh = (struct ppc_link_hash_entry *) h;
5793 eh->tls_mask |= tls_type;
5796 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5797 rel->r_addend, tls_type))
5800 ppc64_sec = ppc64_elf_section_data (sec);
5801 if (ppc64_sec->sec_type != sec_toc)
5805 /* One extra to simplify get_tls_mask. */
5806 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5807 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5808 if (ppc64_sec->u.toc.symndx == NULL)
5810 amt = sec->size * sizeof (bfd_vma) / 8;
5811 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5812 if (ppc64_sec->u.toc.add == NULL)
5814 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5815 ppc64_sec->sec_type = sec_toc;
5817 BFD_ASSERT (rel->r_offset % 8 == 0);
5818 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5819 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5821 /* Mark the second slot of a GD or LD entry.
5822 -1 to indicate GD and -2 to indicate LD. */
5823 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5824 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5825 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5826 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5829 case R_PPC64_TPREL16:
5830 case R_PPC64_TPREL16_LO:
5831 case R_PPC64_TPREL16_HI:
5832 case R_PPC64_TPREL16_HA:
5833 case R_PPC64_TPREL16_DS:
5834 case R_PPC64_TPREL16_LO_DS:
5835 case R_PPC64_TPREL16_HIGH:
5836 case R_PPC64_TPREL16_HIGHA:
5837 case R_PPC64_TPREL16_HIGHER:
5838 case R_PPC64_TPREL16_HIGHERA:
5839 case R_PPC64_TPREL16_HIGHEST:
5840 case R_PPC64_TPREL16_HIGHESTA:
5841 if (bfd_link_dll (info))
5842 info->flags |= DF_STATIC_TLS;
5845 case R_PPC64_ADDR64:
5847 && rel + 1 < rel_end
5848 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5851 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5855 case R_PPC64_ADDR16:
5856 case R_PPC64_ADDR16_DS:
5857 case R_PPC64_ADDR16_HA:
5858 case R_PPC64_ADDR16_HI:
5859 case R_PPC64_ADDR16_HIGH:
5860 case R_PPC64_ADDR16_HIGHA:
5861 case R_PPC64_ADDR16_HIGHER:
5862 case R_PPC64_ADDR16_HIGHERA:
5863 case R_PPC64_ADDR16_HIGHEST:
5864 case R_PPC64_ADDR16_HIGHESTA:
5865 case R_PPC64_ADDR16_LO:
5866 case R_PPC64_ADDR16_LO_DS:
5867 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5868 && rel->r_addend == 0)
5870 /* We may need a .plt entry if this reloc refers to a
5871 function in a shared lib. */
5872 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5874 h->pointer_equality_needed = 1;
5881 case R_PPC64_ADDR32:
5882 case R_PPC64_UADDR16:
5883 case R_PPC64_UADDR32:
5884 case R_PPC64_UADDR64:
5886 if (h != NULL && !bfd_link_pic (info))
5887 /* We may need a copy reloc. */
5890 /* Don't propagate .opd relocs. */
5891 if (NO_OPD_RELOCS && is_opd)
5894 /* If we are creating a shared library, and this is a reloc
5895 against a global symbol, or a non PC relative reloc
5896 against a local symbol, then we need to copy the reloc
5897 into the shared library. However, if we are linking with
5898 -Bsymbolic, we do not need to copy a reloc against a
5899 global symbol which is defined in an object we are
5900 including in the link (i.e., DEF_REGULAR is set). At
5901 this point we have not seen all the input files, so it is
5902 possible that DEF_REGULAR is not set now but will be set
5903 later (it is never cleared). In case of a weak definition,
5904 DEF_REGULAR may be cleared later by a strong definition in
5905 a shared library. We account for that possibility below by
5906 storing information in the dyn_relocs field of the hash
5907 table entry. A similar situation occurs when creating
5908 shared libraries and symbol visibility changes render the
5911 If on the other hand, we are creating an executable, we
5912 may need to keep relocations for symbols satisfied by a
5913 dynamic library if we manage to avoid copy relocs for the
5916 if ((bfd_link_pic (info)
5917 && (must_be_dyn_reloc (info, r_type)
5919 && (!SYMBOLIC_BIND (info, h)
5920 || h->root.type == bfd_link_hash_defweak
5921 || !h->def_regular))))
5922 || (ELIMINATE_COPY_RELOCS
5923 && !bfd_link_pic (info)
5925 && (h->root.type == bfd_link_hash_defweak
5926 || !h->def_regular))
5927 || (!bfd_link_pic (info)
5930 /* We must copy these reloc types into the output file.
5931 Create a reloc section in dynobj and make room for
5935 sreloc = _bfd_elf_make_dynamic_reloc_section
5936 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5942 /* If this is a global symbol, we count the number of
5943 relocations we need for this symbol. */
5946 struct elf_dyn_relocs *p;
5947 struct elf_dyn_relocs **head;
5949 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5951 if (p == NULL || p->sec != sec)
5953 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5963 if (!must_be_dyn_reloc (info, r_type))
5968 /* Track dynamic relocs needed for local syms too.
5969 We really need local syms available to do this
5971 struct ppc_dyn_relocs *p;
5972 struct ppc_dyn_relocs **head;
5973 bfd_boolean is_ifunc;
5976 Elf_Internal_Sym *isym;
5978 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5983 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5987 vpp = &elf_section_data (s)->local_dynrel;
5988 head = (struct ppc_dyn_relocs **) vpp;
5989 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5991 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5993 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5995 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6001 p->ifunc = is_ifunc;
6017 /* Merge backend specific data from an object file to the output
6018 object file when linking. */
6021 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6023 bfd *obfd = info->output_bfd;
6024 unsigned long iflags, oflags;
6026 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6029 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6032 if (!_bfd_generic_verify_endian_match (ibfd, info))
6035 iflags = elf_elfheader (ibfd)->e_flags;
6036 oflags = elf_elfheader (obfd)->e_flags;
6038 if (iflags & ~EF_PPC64_ABI)
6041 /* xgettext:c-format */
6042 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6043 bfd_set_error (bfd_error_bad_value);
6046 else if (iflags != oflags && iflags != 0)
6049 /* xgettext:c-format */
6050 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6051 ibfd, iflags, oflags);
6052 bfd_set_error (bfd_error_bad_value);
6056 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6058 /* Merge Tag_compatibility attributes and any common GNU ones. */
6059 _bfd_elf_merge_object_attributes (ibfd, info);
6065 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6067 /* Print normal ELF private data. */
6068 _bfd_elf_print_private_bfd_data (abfd, ptr);
6070 if (elf_elfheader (abfd)->e_flags != 0)
6074 fprintf (file, _("private flags = 0x%lx:"),
6075 elf_elfheader (abfd)->e_flags);
6077 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6078 fprintf (file, _(" [abiv%ld]"),
6079 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6086 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6087 of the code entry point, and its section, which must be in the same
6088 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6091 opd_entry_value (asection *opd_sec,
6093 asection **code_sec,
6095 bfd_boolean in_code_sec)
6097 bfd *opd_bfd = opd_sec->owner;
6098 Elf_Internal_Rela *relocs;
6099 Elf_Internal_Rela *lo, *hi, *look;
6102 /* No relocs implies we are linking a --just-symbols object, or looking
6103 at a final linked executable with addr2line or somesuch. */
6104 if (opd_sec->reloc_count == 0)
6106 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6108 if (contents == NULL)
6110 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6111 return (bfd_vma) -1;
6112 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6115 /* PR 17512: file: 64b9dfbb. */
6116 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6117 return (bfd_vma) -1;
6119 val = bfd_get_64 (opd_bfd, contents + offset);
6120 if (code_sec != NULL)
6122 asection *sec, *likely = NULL;
6128 && val < sec->vma + sec->size)
6134 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6136 && (sec->flags & SEC_LOAD) != 0
6137 && (sec->flags & SEC_ALLOC) != 0)
6142 if (code_off != NULL)
6143 *code_off = val - likely->vma;
6149 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6151 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6153 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6154 /* PR 17512: file: df8e1fd6. */
6156 return (bfd_vma) -1;
6158 /* Go find the opd reloc at the sym address. */
6160 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6164 look = lo + (hi - lo) / 2;
6165 if (look->r_offset < offset)
6167 else if (look->r_offset > offset)
6171 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6173 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6174 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6176 unsigned long symndx = ELF64_R_SYM (look->r_info);
6177 asection *sec = NULL;
6179 if (symndx >= symtab_hdr->sh_info
6180 && elf_sym_hashes (opd_bfd) != NULL)
6182 struct elf_link_hash_entry **sym_hashes;
6183 struct elf_link_hash_entry *rh;
6185 sym_hashes = elf_sym_hashes (opd_bfd);
6186 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6189 rh = elf_follow_link (rh);
6190 if (rh->root.type != bfd_link_hash_defined
6191 && rh->root.type != bfd_link_hash_defweak)
6193 if (rh->root.u.def.section->owner == opd_bfd)
6195 val = rh->root.u.def.value;
6196 sec = rh->root.u.def.section;
6203 Elf_Internal_Sym *sym;
6205 if (symndx < symtab_hdr->sh_info)
6207 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6210 size_t symcnt = symtab_hdr->sh_info;
6211 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6216 symtab_hdr->contents = (bfd_byte *) sym;
6222 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6228 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6231 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6232 val = sym->st_value;
6235 val += look->r_addend;
6236 if (code_off != NULL)
6238 if (code_sec != NULL)
6240 if (in_code_sec && *code_sec != sec)
6245 if (sec->output_section != NULL)
6246 val += sec->output_section->vma + sec->output_offset;
6255 /* If the ELF symbol SYM might be a function in SEC, return the
6256 function size and set *CODE_OFF to the function's entry point,
6257 otherwise return zero. */
6259 static bfd_size_type
6260 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6265 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6266 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6270 if (!(sym->flags & BSF_SYNTHETIC))
6271 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6273 if (strcmp (sym->section->name, ".opd") == 0)
6275 struct _opd_sec_data *opd = get_opd_info (sym->section);
6276 bfd_vma symval = sym->value;
6279 && opd->adjust != NULL
6280 && elf_section_data (sym->section)->relocs != NULL)
6282 /* opd_entry_value will use cached relocs that have been
6283 adjusted, but with raw symbols. That means both local
6284 and global symbols need adjusting. */
6285 long adjust = opd->adjust[OPD_NDX (symval)];
6291 if (opd_entry_value (sym->section, symval,
6292 &sec, code_off, TRUE) == (bfd_vma) -1)
6294 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6295 symbol. This size has nothing to do with the code size of the
6296 function, which is what we're supposed to return, but the
6297 code size isn't available without looking up the dot-sym.
6298 However, doing that would be a waste of time particularly
6299 since elf_find_function will look at the dot-sym anyway.
6300 Now, elf_find_function will keep the largest size of any
6301 function sym found at the code address of interest, so return
6302 1 here to avoid it incorrectly caching a larger function size
6303 for a small function. This does mean we return the wrong
6304 size for a new-ABI function of size 24, but all that does is
6305 disable caching for such functions. */
6311 if (sym->section != sec)
6313 *code_off = sym->value;
6320 /* Return true if symbol is a strong function defined in an ELFv2
6321 object with st_other localentry bits of zero, ie. its local entry
6322 point coincides with its global entry point. */
6325 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6328 && h->type == STT_FUNC
6329 && h->root.type == bfd_link_hash_defined
6330 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6331 && !((struct ppc_link_hash_entry *) h)->non_zero_localentry
6332 && is_ppc64_elf (h->root.u.def.section->owner)
6333 && abiversion (h->root.u.def.section->owner) >= 2);
6336 /* Return true if symbol is defined in a regular object file. */
6339 is_static_defined (struct elf_link_hash_entry *h)
6341 return ((h->root.type == bfd_link_hash_defined
6342 || h->root.type == bfd_link_hash_defweak)
6343 && h->root.u.def.section != NULL
6344 && h->root.u.def.section->output_section != NULL);
6347 /* If FDH is a function descriptor symbol, return the associated code
6348 entry symbol if it is defined. Return NULL otherwise. */
6350 static struct ppc_link_hash_entry *
6351 defined_code_entry (struct ppc_link_hash_entry *fdh)
6353 if (fdh->is_func_descriptor)
6355 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6356 if (fh->elf.root.type == bfd_link_hash_defined
6357 || fh->elf.root.type == bfd_link_hash_defweak)
6363 /* If FH is a function code entry symbol, return the associated
6364 function descriptor symbol if it is defined. Return NULL otherwise. */
6366 static struct ppc_link_hash_entry *
6367 defined_func_desc (struct ppc_link_hash_entry *fh)
6370 && fh->oh->is_func_descriptor)
6372 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6373 if (fdh->elf.root.type == bfd_link_hash_defined
6374 || fdh->elf.root.type == bfd_link_hash_defweak)
6380 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6382 /* Garbage collect sections, after first dealing with dot-symbols. */
6385 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6387 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6389 if (htab != NULL && htab->need_func_desc_adj)
6391 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6392 htab->need_func_desc_adj = 0;
6394 return bfd_elf_gc_sections (abfd, info);
6397 /* Mark all our entry sym sections, both opd and code section. */
6400 ppc64_elf_gc_keep (struct bfd_link_info *info)
6402 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6403 struct bfd_sym_chain *sym;
6408 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6410 struct ppc_link_hash_entry *eh, *fh;
6413 eh = (struct ppc_link_hash_entry *)
6414 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6417 if (eh->elf.root.type != bfd_link_hash_defined
6418 && eh->elf.root.type != bfd_link_hash_defweak)
6421 fh = defined_code_entry (eh);
6424 sec = fh->elf.root.u.def.section;
6425 sec->flags |= SEC_KEEP;
6427 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6428 && opd_entry_value (eh->elf.root.u.def.section,
6429 eh->elf.root.u.def.value,
6430 &sec, NULL, FALSE) != (bfd_vma) -1)
6431 sec->flags |= SEC_KEEP;
6433 sec = eh->elf.root.u.def.section;
6434 sec->flags |= SEC_KEEP;
6438 /* Mark sections containing dynamically referenced symbols. When
6439 building shared libraries, we must assume that any visible symbol is
6443 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6445 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6446 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6447 struct ppc_link_hash_entry *fdh;
6448 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6450 /* Dynamic linking info is on the func descriptor sym. */
6451 fdh = defined_func_desc (eh);
6455 if ((eh->elf.root.type == bfd_link_hash_defined
6456 || eh->elf.root.type == bfd_link_hash_defweak)
6457 && (eh->elf.ref_dynamic
6458 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6459 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6460 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6461 && (!bfd_link_executable (info)
6462 || info->gc_keep_exported
6463 || info->export_dynamic
6466 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6467 && (eh->elf.versioned >= versioned
6468 || !bfd_hide_sym_by_version (info->version_info,
6469 eh->elf.root.root.string)))))
6472 struct ppc_link_hash_entry *fh;
6474 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6476 /* Function descriptor syms cause the associated
6477 function code sym section to be marked. */
6478 fh = defined_code_entry (eh);
6481 code_sec = fh->elf.root.u.def.section;
6482 code_sec->flags |= SEC_KEEP;
6484 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6485 && opd_entry_value (eh->elf.root.u.def.section,
6486 eh->elf.root.u.def.value,
6487 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6488 code_sec->flags |= SEC_KEEP;
6494 /* Return the section that should be marked against GC for a given
6498 ppc64_elf_gc_mark_hook (asection *sec,
6499 struct bfd_link_info *info,
6500 Elf_Internal_Rela *rel,
6501 struct elf_link_hash_entry *h,
6502 Elf_Internal_Sym *sym)
6506 /* Syms return NULL if we're marking .opd, so we avoid marking all
6507 function sections, as all functions are referenced in .opd. */
6509 if (get_opd_info (sec) != NULL)
6514 enum elf_ppc64_reloc_type r_type;
6515 struct ppc_link_hash_entry *eh, *fh, *fdh;
6517 r_type = ELF64_R_TYPE (rel->r_info);
6520 case R_PPC64_GNU_VTINHERIT:
6521 case R_PPC64_GNU_VTENTRY:
6525 switch (h->root.type)
6527 case bfd_link_hash_defined:
6528 case bfd_link_hash_defweak:
6529 eh = (struct ppc_link_hash_entry *) h;
6530 fdh = defined_func_desc (eh);
6533 /* -mcall-aixdesc code references the dot-symbol on
6534 a call reloc. Mark the function descriptor too
6535 against garbage collection. */
6537 if (fdh->elf.is_weakalias)
6538 weakdef (&fdh->elf)->mark = 1;
6542 /* Function descriptor syms cause the associated
6543 function code sym section to be marked. */
6544 fh = defined_code_entry (eh);
6547 /* They also mark their opd section. */
6548 eh->elf.root.u.def.section->gc_mark = 1;
6550 rsec = fh->elf.root.u.def.section;
6552 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6553 && opd_entry_value (eh->elf.root.u.def.section,
6554 eh->elf.root.u.def.value,
6555 &rsec, NULL, FALSE) != (bfd_vma) -1)
6556 eh->elf.root.u.def.section->gc_mark = 1;
6558 rsec = h->root.u.def.section;
6561 case bfd_link_hash_common:
6562 rsec = h->root.u.c.p->section;
6566 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6572 struct _opd_sec_data *opd;
6574 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6575 opd = get_opd_info (rsec);
6576 if (opd != NULL && opd->func_sec != NULL)
6580 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6587 /* The maximum size of .sfpr. */
6588 #define SFPR_MAX (218*4)
6590 struct sfpr_def_parms
6592 const char name[12];
6593 unsigned char lo, hi;
6594 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6595 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6598 /* Auto-generate _save*, _rest* functions in .sfpr.
6599 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6603 sfpr_define (struct bfd_link_info *info,
6604 const struct sfpr_def_parms *parm,
6607 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6609 size_t len = strlen (parm->name);
6610 bfd_boolean writing = FALSE;
6616 memcpy (sym, parm->name, len);
6619 for (i = parm->lo; i <= parm->hi; i++)
6621 struct ppc_link_hash_entry *h;
6623 sym[len + 0] = i / 10 + '0';
6624 sym[len + 1] = i % 10 + '0';
6625 h = (struct ppc_link_hash_entry *)
6626 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6627 if (stub_sec != NULL)
6630 && h->elf.root.type == bfd_link_hash_defined
6631 && h->elf.root.u.def.section == htab->sfpr)
6633 struct elf_link_hash_entry *s;
6635 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6636 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6639 if (s->root.type == bfd_link_hash_new
6640 || (s->root.type = bfd_link_hash_defined
6641 && s->root.u.def.section == stub_sec))
6643 s->root.type = bfd_link_hash_defined;
6644 s->root.u.def.section = stub_sec;
6645 s->root.u.def.value = (stub_sec->size
6646 + h->elf.root.u.def.value);
6649 s->ref_regular_nonweak = 1;
6650 s->forced_local = 1;
6652 s->root.linker_def = 1;
6660 if (!h->elf.def_regular)
6662 h->elf.root.type = bfd_link_hash_defined;
6663 h->elf.root.u.def.section = htab->sfpr;
6664 h->elf.root.u.def.value = htab->sfpr->size;
6665 h->elf.type = STT_FUNC;
6666 h->elf.def_regular = 1;
6668 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6670 if (htab->sfpr->contents == NULL)
6672 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6673 if (htab->sfpr->contents == NULL)
6680 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6682 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6684 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6685 htab->sfpr->size = p - htab->sfpr->contents;
6693 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6695 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6700 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6702 p = savegpr0 (abfd, p, r);
6703 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6705 bfd_put_32 (abfd, BLR, p);
6710 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6712 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6717 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6719 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6721 p = restgpr0 (abfd, p, r);
6722 bfd_put_32 (abfd, MTLR_R0, p);
6726 p = restgpr0 (abfd, p, 30);
6727 p = restgpr0 (abfd, p, 31);
6729 bfd_put_32 (abfd, BLR, p);
6734 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6736 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6741 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6743 p = savegpr1 (abfd, p, r);
6744 bfd_put_32 (abfd, BLR, p);
6749 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6751 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6756 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6758 p = restgpr1 (abfd, p, r);
6759 bfd_put_32 (abfd, BLR, p);
6764 savefpr (bfd *abfd, bfd_byte *p, int r)
6766 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6771 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6773 p = savefpr (abfd, p, r);
6774 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6776 bfd_put_32 (abfd, BLR, p);
6781 restfpr (bfd *abfd, bfd_byte *p, int r)
6783 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6788 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6790 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6792 p = restfpr (abfd, p, r);
6793 bfd_put_32 (abfd, MTLR_R0, p);
6797 p = restfpr (abfd, p, 30);
6798 p = restfpr (abfd, p, 31);
6800 bfd_put_32 (abfd, BLR, p);
6805 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6807 p = savefpr (abfd, p, r);
6808 bfd_put_32 (abfd, BLR, p);
6813 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6815 p = restfpr (abfd, p, r);
6816 bfd_put_32 (abfd, BLR, p);
6821 savevr (bfd *abfd, bfd_byte *p, int r)
6823 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6825 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6830 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6832 p = savevr (abfd, p, r);
6833 bfd_put_32 (abfd, BLR, p);
6838 restvr (bfd *abfd, bfd_byte *p, int r)
6840 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6842 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6847 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6849 p = restvr (abfd, p, r);
6850 bfd_put_32 (abfd, BLR, p);
6854 /* Called via elf_link_hash_traverse to transfer dynamic linking
6855 information on function code symbol entries to their corresponding
6856 function descriptor symbol entries. */
6859 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6861 struct bfd_link_info *info;
6862 struct ppc_link_hash_table *htab;
6863 struct ppc_link_hash_entry *fh;
6864 struct ppc_link_hash_entry *fdh;
6865 bfd_boolean force_local;
6867 fh = (struct ppc_link_hash_entry *) h;
6868 if (fh->elf.root.type == bfd_link_hash_indirect)
6874 if (fh->elf.root.root.string[0] != '.'
6875 || fh->elf.root.root.string[1] == '\0')
6879 htab = ppc_hash_table (info);
6883 /* Find the corresponding function descriptor symbol. */
6884 fdh = lookup_fdh (fh, htab);
6886 /* Resolve undefined references to dot-symbols as the value
6887 in the function descriptor, if we have one in a regular object.
6888 This is to satisfy cases like ".quad .foo". Calls to functions
6889 in dynamic objects are handled elsewhere. */
6890 if ((fh->elf.root.type == bfd_link_hash_undefined
6891 || fh->elf.root.type == bfd_link_hash_undefweak)
6892 && (fdh->elf.root.type == bfd_link_hash_defined
6893 || fdh->elf.root.type == bfd_link_hash_defweak)
6894 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6895 && opd_entry_value (fdh->elf.root.u.def.section,
6896 fdh->elf.root.u.def.value,
6897 &fh->elf.root.u.def.section,
6898 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6900 fh->elf.root.type = fdh->elf.root.type;
6901 fh->elf.forced_local = 1;
6902 fh->elf.def_regular = fdh->elf.def_regular;
6903 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6906 if (!fh->elf.dynamic)
6908 struct plt_entry *ent;
6910 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6911 if (ent->plt.refcount > 0)
6917 /* Create a descriptor as undefined if necessary. */
6919 && !bfd_link_executable (info)
6920 && (fh->elf.root.type == bfd_link_hash_undefined
6921 || fh->elf.root.type == bfd_link_hash_undefweak))
6923 fdh = make_fdh (info, fh);
6928 /* We can't support overriding of symbols on a fake descriptor. */
6931 && (fh->elf.root.type == bfd_link_hash_defined
6932 || fh->elf.root.type == bfd_link_hash_defweak))
6933 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6935 /* Transfer dynamic linking information to the function descriptor. */
6938 fdh->elf.ref_regular |= fh->elf.ref_regular;
6939 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6940 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6941 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6942 fdh->elf.dynamic |= fh->elf.dynamic;
6943 fdh->elf.needs_plt |= (fh->elf.needs_plt
6944 || fh->elf.type == STT_FUNC
6945 || fh->elf.type == STT_GNU_IFUNC);
6946 move_plt_plist (fh, fdh);
6948 if (!fdh->elf.forced_local
6949 && fh->elf.dynindx != -1)
6950 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6954 /* Now that the info is on the function descriptor, clear the
6955 function code sym info. Any function code syms for which we
6956 don't have a definition in a regular file, we force local.
6957 This prevents a shared library from exporting syms that have
6958 been imported from another library. Function code syms that
6959 are really in the library we must leave global to prevent the
6960 linker dragging in a definition from a static library. */
6961 force_local = (!fh->elf.def_regular
6963 || !fdh->elf.def_regular
6964 || fdh->elf.forced_local);
6965 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6970 static const struct sfpr_def_parms save_res_funcs[] =
6972 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6973 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6974 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6975 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6976 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6977 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6978 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6979 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6980 { "._savef", 14, 31, savefpr, savefpr1_tail },
6981 { "._restf", 14, 31, restfpr, restfpr1_tail },
6982 { "_savevr_", 20, 31, savevr, savevr_tail },
6983 { "_restvr_", 20, 31, restvr, restvr_tail }
6986 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6987 this hook to a) provide some gcc support functions, and b) transfer
6988 dynamic linking information gathered so far on function code symbol
6989 entries, to their corresponding function descriptor symbol entries. */
6992 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6993 struct bfd_link_info *info)
6995 struct ppc_link_hash_table *htab;
6997 htab = ppc_hash_table (info);
7001 /* Provide any missing _save* and _rest* functions. */
7002 if (htab->sfpr != NULL)
7006 htab->sfpr->size = 0;
7007 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7008 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7010 if (htab->sfpr->size == 0)
7011 htab->sfpr->flags |= SEC_EXCLUDE;
7014 if (bfd_link_relocatable (info))
7017 if (htab->elf.hgot != NULL)
7019 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7020 /* Make .TOC. defined so as to prevent it being made dynamic.
7021 The wrong value here is fixed later in ppc64_elf_set_toc. */
7022 if (!htab->elf.hgot->def_regular
7023 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7025 htab->elf.hgot->root.type = bfd_link_hash_defined;
7026 htab->elf.hgot->root.u.def.value = 0;
7027 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7028 htab->elf.hgot->def_regular = 1;
7029 htab->elf.hgot->root.linker_def = 1;
7031 htab->elf.hgot->type = STT_OBJECT;
7032 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7036 if (htab->need_func_desc_adj)
7038 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7039 htab->need_func_desc_adj = 0;
7045 /* Find dynamic relocs for H that apply to read-only sections. */
7048 readonly_dynrelocs (struct elf_link_hash_entry *h)
7050 struct ppc_link_hash_entry *eh;
7051 struct elf_dyn_relocs *p;
7053 eh = (struct ppc_link_hash_entry *) h;
7054 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7056 asection *s = p->sec->output_section;
7058 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7064 /* Return true if we have dynamic relocs against H or any of its weak
7065 aliases, that apply to read-only sections. Cannot be used after
7066 size_dynamic_sections. */
7069 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7071 struct ppc_link_hash_entry *eh;
7073 eh = (struct ppc_link_hash_entry *) h;
7076 if (readonly_dynrelocs (&eh->elf))
7078 eh = (struct ppc_link_hash_entry *) eh->elf.u.alias;
7079 } while (eh != NULL && &eh->elf != h);
7084 /* Return whether EH has pc-relative dynamic relocs. */
7087 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7089 struct elf_dyn_relocs *p;
7091 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7092 if (p->pc_count != 0)
7097 /* Return true if a global entry stub will be created for H. Valid
7098 for ELFv2 before plt entries have been allocated. */
7101 global_entry_stub (struct elf_link_hash_entry *h)
7103 struct plt_entry *pent;
7105 if (!h->pointer_equality_needed
7109 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7110 if (pent->plt.refcount > 0
7111 && pent->addend == 0)
7117 /* Adjust a symbol defined by a dynamic object and referenced by a
7118 regular object. The current definition is in some section of the
7119 dynamic object, but we're not including those sections. We have to
7120 change the definition to something the rest of the link can
7124 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7125 struct elf_link_hash_entry *h)
7127 struct ppc_link_hash_table *htab;
7130 htab = ppc_hash_table (info);
7134 /* Deal with function syms. */
7135 if (h->type == STT_FUNC
7136 || h->type == STT_GNU_IFUNC
7139 bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res
7140 || SYMBOL_CALLS_LOCAL (info, h)
7141 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
7142 /* Discard dyn_relocs when non-pic if we've decided that a
7143 function symbol is local and not an ifunc. We keep dynamic
7144 relocs for ifuncs when local rather than always emitting a
7145 plt call stub for them and defining the symbol on the call
7146 stub. We can't do that for ELFv1 anyway (a function symbol
7147 is defined on a descriptor, not code) and it can be faster at
7148 run-time due to not needing to bounce through a stub. The
7149 dyn_relocs for ifuncs will be applied even in a static
7151 if (!bfd_link_pic (info)
7152 && h->type != STT_GNU_IFUNC
7154 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7156 /* Clear procedure linkage table information for any symbol that
7157 won't need a .plt entry. */
7158 struct plt_entry *ent;
7159 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7160 if (ent->plt.refcount > 0)
7163 || (h->type != STT_GNU_IFUNC && local))
7165 h->plt.plist = NULL;
7167 h->pointer_equality_needed = 0;
7169 else if (abiversion (info->output_bfd) >= 2)
7171 /* Taking a function's address in a read/write section
7172 doesn't require us to define the function symbol in the
7173 executable on a global entry stub. A dynamic reloc can
7174 be used instead. The reason we prefer a few more dynamic
7175 relocs is that calling via a global entry stub costs a
7176 few more instructions, and pointer_equality_needed causes
7177 extra work in ld.so when resolving these symbols. */
7178 if (global_entry_stub (h))
7180 if (!readonly_dynrelocs (h))
7182 h->pointer_equality_needed = 0;
7183 /* If we haven't seen a branch reloc then we don't need
7186 h->plt.plist = NULL;
7188 else if (!bfd_link_pic (info))
7189 /* We are going to be defining the function symbol on the
7190 plt stub, so no dyn_relocs needed when non-pic. */
7191 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7194 /* ELFv2 function symbols can't have copy relocs. */
7197 else if (!h->needs_plt
7198 && !readonly_dynrelocs (h))
7200 /* If we haven't seen a branch reloc then we don't need a
7202 h->plt.plist = NULL;
7203 h->pointer_equality_needed = 0;
7208 h->plt.plist = NULL;
7210 /* If this is a weak symbol, and there is a real definition, the
7211 processor independent code will have arranged for us to see the
7212 real definition first, and we can just use the same value. */
7213 if (h->is_weakalias)
7215 struct elf_link_hash_entry *def = weakdef (h);
7216 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7217 h->root.u.def.section = def->root.u.def.section;
7218 h->root.u.def.value = def->root.u.def.value;
7219 if (ELIMINATE_COPY_RELOCS)
7220 h->non_got_ref = def->non_got_ref;
7224 /* If we are creating a shared library, we must presume that the
7225 only references to the symbol are via the global offset table.
7226 For such cases we need not do anything here; the relocations will
7227 be handled correctly by relocate_section. */
7228 if (bfd_link_pic (info))
7231 /* If there are no references to this symbol that do not use the
7232 GOT, we don't need to generate a copy reloc. */
7233 if (!h->non_got_ref)
7236 /* Don't generate a copy reloc for symbols defined in the executable. */
7237 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7239 /* If -z nocopyreloc was given, don't generate them either. */
7240 || info->nocopyreloc
7242 /* If we didn't find any dynamic relocs in read-only sections, then
7243 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7244 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7246 /* Protected variables do not work with .dynbss. The copy in
7247 .dynbss won't be used by the shared library with the protected
7248 definition for the variable. Text relocations are preferable
7249 to an incorrect program. */
7250 || h->protected_def)
7253 if (h->plt.plist != NULL)
7255 /* We should never get here, but unfortunately there are versions
7256 of gcc out there that improperly (for this ABI) put initialized
7257 function pointers, vtable refs and suchlike in read-only
7258 sections. Allow them to proceed, but warn that this might
7259 break at runtime. */
7260 info->callbacks->einfo
7261 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7262 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7263 h->root.root.string);
7266 /* This is a reference to a symbol defined by a dynamic object which
7267 is not a function. */
7269 /* We must allocate the symbol in our .dynbss section, which will
7270 become part of the .bss section of the executable. There will be
7271 an entry for this symbol in the .dynsym section. The dynamic
7272 object will contain position independent code, so all references
7273 from the dynamic object to this symbol will go through the global
7274 offset table. The dynamic linker will use the .dynsym entry to
7275 determine the address it must put in the global offset table, so
7276 both the dynamic object and the regular object will refer to the
7277 same memory location for the variable. */
7279 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7280 to copy the initial value out of the dynamic object and into the
7281 runtime process image. We need to remember the offset into the
7282 .rela.bss section we are going to use. */
7283 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7285 s = htab->elf.sdynrelro;
7286 srel = htab->elf.sreldynrelro;
7290 s = htab->elf.sdynbss;
7291 srel = htab->elf.srelbss;
7293 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7295 srel->size += sizeof (Elf64_External_Rela);
7299 /* We no longer want dyn_relocs. */
7300 ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
7301 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7304 /* If given a function descriptor symbol, hide both the function code
7305 sym and the descriptor. */
7307 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7308 struct elf_link_hash_entry *h,
7309 bfd_boolean force_local)
7311 struct ppc_link_hash_entry *eh;
7312 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7314 eh = (struct ppc_link_hash_entry *) h;
7315 if (eh->is_func_descriptor)
7317 struct ppc_link_hash_entry *fh = eh->oh;
7322 struct elf_link_hash_table *htab = elf_hash_table (info);
7325 /* We aren't supposed to use alloca in BFD because on
7326 systems which do not have alloca the version in libiberty
7327 calls xmalloc, which might cause the program to crash
7328 when it runs out of memory. This function doesn't have a
7329 return status, so there's no way to gracefully return an
7330 error. So cheat. We know that string[-1] can be safely
7331 accessed; It's either a string in an ELF string table,
7332 or allocated in an objalloc structure. */
7334 p = eh->elf.root.root.string - 1;
7337 fh = (struct ppc_link_hash_entry *)
7338 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7341 /* Unfortunately, if it so happens that the string we were
7342 looking for was allocated immediately before this string,
7343 then we overwrote the string terminator. That's the only
7344 reason the lookup should fail. */
7347 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7348 while (q >= eh->elf.root.root.string && *q == *p)
7350 if (q < eh->elf.root.root.string && *p == '.')
7351 fh = (struct ppc_link_hash_entry *)
7352 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7361 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7366 get_sym_h (struct elf_link_hash_entry **hp,
7367 Elf_Internal_Sym **symp,
7369 unsigned char **tls_maskp,
7370 Elf_Internal_Sym **locsymsp,
7371 unsigned long r_symndx,
7374 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7376 if (r_symndx >= symtab_hdr->sh_info)
7378 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7379 struct elf_link_hash_entry *h;
7381 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7382 h = elf_follow_link (h);
7390 if (symsecp != NULL)
7392 asection *symsec = NULL;
7393 if (h->root.type == bfd_link_hash_defined
7394 || h->root.type == bfd_link_hash_defweak)
7395 symsec = h->root.u.def.section;
7399 if (tls_maskp != NULL)
7401 struct ppc_link_hash_entry *eh;
7403 eh = (struct ppc_link_hash_entry *) h;
7404 *tls_maskp = &eh->tls_mask;
7409 Elf_Internal_Sym *sym;
7410 Elf_Internal_Sym *locsyms = *locsymsp;
7412 if (locsyms == NULL)
7414 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7415 if (locsyms == NULL)
7416 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7417 symtab_hdr->sh_info,
7418 0, NULL, NULL, NULL);
7419 if (locsyms == NULL)
7421 *locsymsp = locsyms;
7423 sym = locsyms + r_symndx;
7431 if (symsecp != NULL)
7432 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7434 if (tls_maskp != NULL)
7436 struct got_entry **lgot_ents;
7437 unsigned char *tls_mask;
7440 lgot_ents = elf_local_got_ents (ibfd);
7441 if (lgot_ents != NULL)
7443 struct plt_entry **local_plt = (struct plt_entry **)
7444 (lgot_ents + symtab_hdr->sh_info);
7445 unsigned char *lgot_masks = (unsigned char *)
7446 (local_plt + symtab_hdr->sh_info);
7447 tls_mask = &lgot_masks[r_symndx];
7449 *tls_maskp = tls_mask;
7455 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7456 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7457 type suitable for optimization, and 1 otherwise. */
7460 get_tls_mask (unsigned char **tls_maskp,
7461 unsigned long *toc_symndx,
7462 bfd_vma *toc_addend,
7463 Elf_Internal_Sym **locsymsp,
7464 const Elf_Internal_Rela *rel,
7467 unsigned long r_symndx;
7469 struct elf_link_hash_entry *h;
7470 Elf_Internal_Sym *sym;
7474 r_symndx = ELF64_R_SYM (rel->r_info);
7475 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7478 if ((*tls_maskp != NULL && **tls_maskp != 0)
7480 || ppc64_elf_section_data (sec) == NULL
7481 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7484 /* Look inside a TOC section too. */
7487 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7488 off = h->root.u.def.value;
7491 off = sym->st_value;
7492 off += rel->r_addend;
7493 BFD_ASSERT (off % 8 == 0);
7494 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7495 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7496 if (toc_symndx != NULL)
7497 *toc_symndx = r_symndx;
7498 if (toc_addend != NULL)
7499 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7500 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7502 if ((h == NULL || is_static_defined (h))
7503 && (next_r == -1 || next_r == -2))
7508 /* Find (or create) an entry in the tocsave hash table. */
7510 static struct tocsave_entry *
7511 tocsave_find (struct ppc_link_hash_table *htab,
7512 enum insert_option insert,
7513 Elf_Internal_Sym **local_syms,
7514 const Elf_Internal_Rela *irela,
7517 unsigned long r_indx;
7518 struct elf_link_hash_entry *h;
7519 Elf_Internal_Sym *sym;
7520 struct tocsave_entry ent, *p;
7522 struct tocsave_entry **slot;
7524 r_indx = ELF64_R_SYM (irela->r_info);
7525 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7527 if (ent.sec == NULL || ent.sec->output_section == NULL)
7530 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7535 ent.offset = h->root.u.def.value;
7537 ent.offset = sym->st_value;
7538 ent.offset += irela->r_addend;
7540 hash = tocsave_htab_hash (&ent);
7541 slot = ((struct tocsave_entry **)
7542 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7548 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7557 /* Adjust all global syms defined in opd sections. In gcc generated
7558 code for the old ABI, these will already have been done. */
7561 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7563 struct ppc_link_hash_entry *eh;
7565 struct _opd_sec_data *opd;
7567 if (h->root.type == bfd_link_hash_indirect)
7570 if (h->root.type != bfd_link_hash_defined
7571 && h->root.type != bfd_link_hash_defweak)
7574 eh = (struct ppc_link_hash_entry *) h;
7575 if (eh->adjust_done)
7578 sym_sec = eh->elf.root.u.def.section;
7579 opd = get_opd_info (sym_sec);
7580 if (opd != NULL && opd->adjust != NULL)
7582 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7585 /* This entry has been deleted. */
7586 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7589 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7590 if (discarded_section (dsec))
7592 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7596 eh->elf.root.u.def.value = 0;
7597 eh->elf.root.u.def.section = dsec;
7600 eh->elf.root.u.def.value += adjust;
7601 eh->adjust_done = 1;
7606 /* Handles decrementing dynamic reloc counts for the reloc specified by
7607 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7608 have already been determined. */
7611 dec_dynrel_count (bfd_vma r_info,
7613 struct bfd_link_info *info,
7614 Elf_Internal_Sym **local_syms,
7615 struct elf_link_hash_entry *h,
7616 Elf_Internal_Sym *sym)
7618 enum elf_ppc64_reloc_type r_type;
7619 asection *sym_sec = NULL;
7621 /* Can this reloc be dynamic? This switch, and later tests here
7622 should be kept in sync with the code in check_relocs. */
7623 r_type = ELF64_R_TYPE (r_info);
7629 case R_PPC64_TPREL16:
7630 case R_PPC64_TPREL16_LO:
7631 case R_PPC64_TPREL16_HI:
7632 case R_PPC64_TPREL16_HA:
7633 case R_PPC64_TPREL16_DS:
7634 case R_PPC64_TPREL16_LO_DS:
7635 case R_PPC64_TPREL16_HIGH:
7636 case R_PPC64_TPREL16_HIGHA:
7637 case R_PPC64_TPREL16_HIGHER:
7638 case R_PPC64_TPREL16_HIGHERA:
7639 case R_PPC64_TPREL16_HIGHEST:
7640 case R_PPC64_TPREL16_HIGHESTA:
7641 case R_PPC64_TPREL64:
7642 case R_PPC64_DTPMOD64:
7643 case R_PPC64_DTPREL64:
7644 case R_PPC64_ADDR64:
7648 case R_PPC64_ADDR14:
7649 case R_PPC64_ADDR14_BRNTAKEN:
7650 case R_PPC64_ADDR14_BRTAKEN:
7651 case R_PPC64_ADDR16:
7652 case R_PPC64_ADDR16_DS:
7653 case R_PPC64_ADDR16_HA:
7654 case R_PPC64_ADDR16_HI:
7655 case R_PPC64_ADDR16_HIGH:
7656 case R_PPC64_ADDR16_HIGHA:
7657 case R_PPC64_ADDR16_HIGHER:
7658 case R_PPC64_ADDR16_HIGHERA:
7659 case R_PPC64_ADDR16_HIGHEST:
7660 case R_PPC64_ADDR16_HIGHESTA:
7661 case R_PPC64_ADDR16_LO:
7662 case R_PPC64_ADDR16_LO_DS:
7663 case R_PPC64_ADDR24:
7664 case R_PPC64_ADDR32:
7665 case R_PPC64_UADDR16:
7666 case R_PPC64_UADDR32:
7667 case R_PPC64_UADDR64:
7672 if (local_syms != NULL)
7674 unsigned long r_symndx;
7675 bfd *ibfd = sec->owner;
7677 r_symndx = ELF64_R_SYM (r_info);
7678 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7682 if ((bfd_link_pic (info)
7683 && (must_be_dyn_reloc (info, r_type)
7685 && (!SYMBOLIC_BIND (info, h)
7686 || h->root.type == bfd_link_hash_defweak
7687 || !h->def_regular))))
7688 || (ELIMINATE_COPY_RELOCS
7689 && !bfd_link_pic (info)
7691 && (h->root.type == bfd_link_hash_defweak
7692 || !h->def_regular)))
7699 struct elf_dyn_relocs *p;
7700 struct elf_dyn_relocs **pp;
7701 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7703 /* elf_gc_sweep may have already removed all dyn relocs associated
7704 with local syms for a given section. Also, symbol flags are
7705 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7706 report a dynreloc miscount. */
7707 if (*pp == NULL && info->gc_sections)
7710 while ((p = *pp) != NULL)
7714 if (!must_be_dyn_reloc (info, r_type))
7726 struct ppc_dyn_relocs *p;
7727 struct ppc_dyn_relocs **pp;
7729 bfd_boolean is_ifunc;
7731 if (local_syms == NULL)
7732 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7733 if (sym_sec == NULL)
7736 vpp = &elf_section_data (sym_sec)->local_dynrel;
7737 pp = (struct ppc_dyn_relocs **) vpp;
7739 if (*pp == NULL && info->gc_sections)
7742 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7743 while ((p = *pp) != NULL)
7745 if (p->sec == sec && p->ifunc == is_ifunc)
7756 /* xgettext:c-format */
7757 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7759 bfd_set_error (bfd_error_bad_value);
7763 /* Remove unused Official Procedure Descriptor entries. Currently we
7764 only remove those associated with functions in discarded link-once
7765 sections, or weakly defined functions that have been overridden. It
7766 would be possible to remove many more entries for statically linked
7770 ppc64_elf_edit_opd (struct bfd_link_info *info)
7773 bfd_boolean some_edited = FALSE;
7774 asection *need_pad = NULL;
7775 struct ppc_link_hash_table *htab;
7777 htab = ppc_hash_table (info);
7781 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7784 Elf_Internal_Rela *relstart, *rel, *relend;
7785 Elf_Internal_Shdr *symtab_hdr;
7786 Elf_Internal_Sym *local_syms;
7787 struct _opd_sec_data *opd;
7788 bfd_boolean need_edit, add_aux_fields, broken;
7789 bfd_size_type cnt_16b = 0;
7791 if (!is_ppc64_elf (ibfd))
7794 sec = bfd_get_section_by_name (ibfd, ".opd");
7795 if (sec == NULL || sec->size == 0)
7798 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7801 if (sec->output_section == bfd_abs_section_ptr)
7804 /* Look through the section relocs. */
7805 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7809 symtab_hdr = &elf_symtab_hdr (ibfd);
7811 /* Read the relocations. */
7812 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7814 if (relstart == NULL)
7817 /* First run through the relocs to check they are sane, and to
7818 determine whether we need to edit this opd section. */
7822 relend = relstart + sec->reloc_count;
7823 for (rel = relstart; rel < relend; )
7825 enum elf_ppc64_reloc_type r_type;
7826 unsigned long r_symndx;
7828 struct elf_link_hash_entry *h;
7829 Elf_Internal_Sym *sym;
7832 /* .opd contains an array of 16 or 24 byte entries. We're
7833 only interested in the reloc pointing to a function entry
7835 offset = rel->r_offset;
7836 if (rel + 1 == relend
7837 || rel[1].r_offset != offset + 8)
7839 /* If someone messes with .opd alignment then after a
7840 "ld -r" we might have padding in the middle of .opd.
7841 Also, there's nothing to prevent someone putting
7842 something silly in .opd with the assembler. No .opd
7843 optimization for them! */
7846 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7851 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7852 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7855 /* xgettext:c-format */
7856 (_("%B: unexpected reloc type %u in .opd section"),
7862 r_symndx = ELF64_R_SYM (rel->r_info);
7863 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7867 if (sym_sec == NULL || sym_sec->owner == NULL)
7869 const char *sym_name;
7871 sym_name = h->root.root.string;
7873 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7877 /* xgettext:c-format */
7878 (_("%B: undefined sym `%s' in .opd section"),
7884 /* opd entries are always for functions defined in the
7885 current input bfd. If the symbol isn't defined in the
7886 input bfd, then we won't be using the function in this
7887 bfd; It must be defined in a linkonce section in another
7888 bfd, or is weak. It's also possible that we are
7889 discarding the function due to a linker script /DISCARD/,
7890 which we test for via the output_section. */
7891 if (sym_sec->owner != ibfd
7892 || sym_sec->output_section == bfd_abs_section_ptr)
7896 if (rel + 1 == relend
7897 || (rel + 2 < relend
7898 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7903 if (sec->size == offset + 24)
7908 if (sec->size == offset + 16)
7915 else if (rel + 1 < relend
7916 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7917 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7919 if (rel[0].r_offset == offset + 16)
7921 else if (rel[0].r_offset != offset + 24)
7928 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7930 if (!broken && (need_edit || add_aux_fields))
7932 Elf_Internal_Rela *write_rel;
7933 Elf_Internal_Shdr *rel_hdr;
7934 bfd_byte *rptr, *wptr;
7935 bfd_byte *new_contents;
7938 new_contents = NULL;
7939 amt = OPD_NDX (sec->size) * sizeof (long);
7940 opd = &ppc64_elf_section_data (sec)->u.opd;
7941 opd->adjust = bfd_zalloc (sec->owner, amt);
7942 if (opd->adjust == NULL)
7945 /* This seems a waste of time as input .opd sections are all
7946 zeros as generated by gcc, but I suppose there's no reason
7947 this will always be so. We might start putting something in
7948 the third word of .opd entries. */
7949 if ((sec->flags & SEC_IN_MEMORY) == 0)
7952 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7957 if (local_syms != NULL
7958 && symtab_hdr->contents != (unsigned char *) local_syms)
7960 if (elf_section_data (sec)->relocs != relstart)
7964 sec->contents = loc;
7965 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7968 elf_section_data (sec)->relocs = relstart;
7970 new_contents = sec->contents;
7973 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7974 if (new_contents == NULL)
7978 wptr = new_contents;
7979 rptr = sec->contents;
7980 write_rel = relstart;
7981 for (rel = relstart; rel < relend; )
7983 unsigned long r_symndx;
7985 struct elf_link_hash_entry *h;
7986 struct ppc_link_hash_entry *fdh = NULL;
7987 Elf_Internal_Sym *sym;
7989 Elf_Internal_Rela *next_rel;
7992 r_symndx = ELF64_R_SYM (rel->r_info);
7993 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7998 if (next_rel + 1 == relend
7999 || (next_rel + 2 < relend
8000 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8003 /* See if the .opd entry is full 24 byte or
8004 16 byte (with fd_aux entry overlapped with next
8007 if (next_rel == relend)
8009 if (sec->size == rel->r_offset + 16)
8012 else if (next_rel->r_offset == rel->r_offset + 16)
8016 && h->root.root.string[0] == '.')
8018 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8021 fdh = ppc_follow_link (fdh);
8022 if (fdh->elf.root.type != bfd_link_hash_defined
8023 && fdh->elf.root.type != bfd_link_hash_defweak)
8028 skip = (sym_sec->owner != ibfd
8029 || sym_sec->output_section == bfd_abs_section_ptr);
8032 if (fdh != NULL && sym_sec->owner == ibfd)
8034 /* Arrange for the function descriptor sym
8036 fdh->elf.root.u.def.value = 0;
8037 fdh->elf.root.u.def.section = sym_sec;
8039 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8041 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8046 if (!dec_dynrel_count (rel->r_info, sec, info,
8050 if (++rel == next_rel)
8053 r_symndx = ELF64_R_SYM (rel->r_info);
8054 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8061 /* We'll be keeping this opd entry. */
8066 /* Redefine the function descriptor symbol to
8067 this location in the opd section. It is
8068 necessary to update the value here rather
8069 than using an array of adjustments as we do
8070 for local symbols, because various places
8071 in the generic ELF code use the value
8072 stored in u.def.value. */
8073 fdh->elf.root.u.def.value = wptr - new_contents;
8074 fdh->adjust_done = 1;
8077 /* Local syms are a bit tricky. We could
8078 tweak them as they can be cached, but
8079 we'd need to look through the local syms
8080 for the function descriptor sym which we
8081 don't have at the moment. So keep an
8082 array of adjustments. */
8083 adjust = (wptr - new_contents) - (rptr - sec->contents);
8084 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8087 memcpy (wptr, rptr, opd_ent_size);
8088 wptr += opd_ent_size;
8089 if (add_aux_fields && opd_ent_size == 16)
8091 memset (wptr, '\0', 8);
8095 /* We need to adjust any reloc offsets to point to the
8097 for ( ; rel != next_rel; ++rel)
8099 rel->r_offset += adjust;
8100 if (write_rel != rel)
8101 memcpy (write_rel, rel, sizeof (*rel));
8106 rptr += opd_ent_size;
8109 sec->size = wptr - new_contents;
8110 sec->reloc_count = write_rel - relstart;
8113 free (sec->contents);
8114 sec->contents = new_contents;
8117 /* Fudge the header size too, as this is used later in
8118 elf_bfd_final_link if we are emitting relocs. */
8119 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8120 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8123 else if (elf_section_data (sec)->relocs != relstart)
8126 if (local_syms != NULL
8127 && symtab_hdr->contents != (unsigned char *) local_syms)
8129 if (!info->keep_memory)
8132 symtab_hdr->contents = (unsigned char *) local_syms;
8137 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8139 /* If we are doing a final link and the last .opd entry is just 16 byte
8140 long, add a 8 byte padding after it. */
8141 if (need_pad != NULL && !bfd_link_relocatable (info))
8145 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8147 BFD_ASSERT (need_pad->size > 0);
8149 p = bfd_malloc (need_pad->size + 8);
8153 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8154 p, 0, need_pad->size))
8157 need_pad->contents = p;
8158 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8162 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8166 need_pad->contents = p;
8169 memset (need_pad->contents + need_pad->size, 0, 8);
8170 need_pad->size += 8;
8176 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8179 ppc64_elf_tls_setup (struct bfd_link_info *info)
8181 struct ppc_link_hash_table *htab;
8183 htab = ppc_hash_table (info);
8187 if (abiversion (info->output_bfd) == 1)
8190 if (htab->params->no_multi_toc)
8191 htab->do_multi_toc = 0;
8192 else if (!htab->do_multi_toc)
8193 htab->params->no_multi_toc = 1;
8195 /* Default to --no-plt-localentry, as this option can cause problems
8196 with symbol interposition. For example, glibc libpthread.so and
8197 libc.so duplicate many pthread symbols, with a fallback
8198 implementation in libc.so. In some cases the fallback does more
8199 work than the pthread implementation. __pthread_condattr_destroy
8200 is one such symbol: the libpthread.so implementation is
8201 localentry:0 while the libc.so implementation is localentry:8.
8202 An app that "cleverly" uses dlopen to only load necessary
8203 libraries at runtime may omit loading libpthread.so when not
8204 running multi-threaded, which then results in the libc.so
8205 fallback symbols being used and ld.so complaining. Now there
8206 are workarounds in ld (see non_zero_localentry) to detect the
8207 pthread situation, but that may not be the only case where
8208 --plt-localentry can cause trouble. */
8209 if (htab->params->plt_localentry0 < 0)
8210 htab->params->plt_localentry0 = 0;
8211 if (htab->params->plt_localentry0
8212 && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8213 FALSE, FALSE, FALSE) == NULL)
8214 info->callbacks->einfo
8215 (_("%P: warning: --plt-localentry is especially dangerous without "
8216 "ld.so support to detect ABI violations.\n"));
8218 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8219 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8220 FALSE, FALSE, TRUE));
8221 /* Move dynamic linking info to the function descriptor sym. */
8222 if (htab->tls_get_addr != NULL)
8223 func_desc_adjust (&htab->tls_get_addr->elf, info);
8224 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8225 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8226 FALSE, FALSE, TRUE));
8227 if (htab->params->tls_get_addr_opt)
8229 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8231 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8232 FALSE, FALSE, TRUE);
8234 func_desc_adjust (opt, info);
8235 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8236 FALSE, FALSE, TRUE);
8238 && (opt_fd->root.type == bfd_link_hash_defined
8239 || opt_fd->root.type == bfd_link_hash_defweak))
8241 /* If glibc supports an optimized __tls_get_addr call stub,
8242 signalled by the presence of __tls_get_addr_opt, and we'll
8243 be calling __tls_get_addr via a plt call stub, then
8244 make __tls_get_addr point to __tls_get_addr_opt. */
8245 tga_fd = &htab->tls_get_addr_fd->elf;
8246 if (htab->elf.dynamic_sections_created
8248 && (tga_fd->type == STT_FUNC
8249 || tga_fd->needs_plt)
8250 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8251 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8253 struct plt_entry *ent;
8255 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8256 if (ent->plt.refcount > 0)
8260 tga_fd->root.type = bfd_link_hash_indirect;
8261 tga_fd->root.u.i.link = &opt_fd->root;
8262 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8264 if (opt_fd->dynindx != -1)
8266 /* Use __tls_get_addr_opt in dynamic relocations. */
8267 opt_fd->dynindx = -1;
8268 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8269 opt_fd->dynstr_index);
8270 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8273 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8274 tga = &htab->tls_get_addr->elf;
8275 if (opt != NULL && tga != NULL)
8277 tga->root.type = bfd_link_hash_indirect;
8278 tga->root.u.i.link = &opt->root;
8279 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8281 _bfd_elf_link_hash_hide_symbol (info, opt,
8283 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8285 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8286 htab->tls_get_addr_fd->is_func_descriptor = 1;
8287 if (htab->tls_get_addr != NULL)
8289 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8290 htab->tls_get_addr->is_func = 1;
8295 else if (htab->params->tls_get_addr_opt < 0)
8296 htab->params->tls_get_addr_opt = 0;
8298 return _bfd_elf_tls_setup (info->output_bfd, info);
8301 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8305 branch_reloc_hash_match (const bfd *ibfd,
8306 const Elf_Internal_Rela *rel,
8307 const struct ppc_link_hash_entry *hash1,
8308 const struct ppc_link_hash_entry *hash2)
8310 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8311 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8312 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8314 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8316 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8317 struct elf_link_hash_entry *h;
8319 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8320 h = elf_follow_link (h);
8321 if (h == &hash1->elf || h == &hash2->elf)
8327 /* Run through all the TLS relocs looking for optimization
8328 opportunities. The linker has been hacked (see ppc64elf.em) to do
8329 a preliminary section layout so that we know the TLS segment
8330 offsets. We can't optimize earlier because some optimizations need
8331 to know the tp offset, and we need to optimize before allocating
8332 dynamic relocations. */
8335 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8339 struct ppc_link_hash_table *htab;
8340 unsigned char *toc_ref;
8343 if (!bfd_link_executable (info))
8346 htab = ppc_hash_table (info);
8350 /* Make two passes over the relocs. On the first pass, mark toc
8351 entries involved with tls relocs, and check that tls relocs
8352 involved in setting up a tls_get_addr call are indeed followed by
8353 such a call. If they are not, we can't do any tls optimization.
8354 On the second pass twiddle tls_mask flags to notify
8355 relocate_section that optimization can be done, and adjust got
8356 and plt refcounts. */
8358 for (pass = 0; pass < 2; ++pass)
8359 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8361 Elf_Internal_Sym *locsyms = NULL;
8362 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8364 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8365 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8367 Elf_Internal_Rela *relstart, *rel, *relend;
8368 bfd_boolean found_tls_get_addr_arg = 0;
8370 /* Read the relocations. */
8371 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8373 if (relstart == NULL)
8379 relend = relstart + sec->reloc_count;
8380 for (rel = relstart; rel < relend; rel++)
8382 enum elf_ppc64_reloc_type r_type;
8383 unsigned long r_symndx;
8384 struct elf_link_hash_entry *h;
8385 Elf_Internal_Sym *sym;
8387 unsigned char *tls_mask;
8388 unsigned char tls_set, tls_clear, tls_type = 0;
8390 bfd_boolean ok_tprel, is_local;
8391 long toc_ref_index = 0;
8392 int expecting_tls_get_addr = 0;
8393 bfd_boolean ret = FALSE;
8395 r_symndx = ELF64_R_SYM (rel->r_info);
8396 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8400 if (elf_section_data (sec)->relocs != relstart)
8402 if (toc_ref != NULL)
8405 && (elf_symtab_hdr (ibfd).contents
8406 != (unsigned char *) locsyms))
8413 if (h->root.type == bfd_link_hash_defined
8414 || h->root.type == bfd_link_hash_defweak)
8415 value = h->root.u.def.value;
8416 else if (h->root.type == bfd_link_hash_undefweak)
8420 found_tls_get_addr_arg = 0;
8425 /* Symbols referenced by TLS relocs must be of type
8426 STT_TLS. So no need for .opd local sym adjust. */
8427 value = sym->st_value;
8436 && h->root.type == bfd_link_hash_undefweak)
8438 else if (sym_sec != NULL
8439 && sym_sec->output_section != NULL)
8441 value += sym_sec->output_offset;
8442 value += sym_sec->output_section->vma;
8443 value -= htab->elf.tls_sec->vma;
8444 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8445 < (bfd_vma) 1 << 32);
8449 r_type = ELF64_R_TYPE (rel->r_info);
8450 /* If this section has old-style __tls_get_addr calls
8451 without marker relocs, then check that each
8452 __tls_get_addr call reloc is preceded by a reloc
8453 that conceivably belongs to the __tls_get_addr arg
8454 setup insn. If we don't find matching arg setup
8455 relocs, don't do any tls optimization. */
8457 && sec->has_tls_get_addr_call
8459 && (h == &htab->tls_get_addr->elf
8460 || h == &htab->tls_get_addr_fd->elf)
8461 && !found_tls_get_addr_arg
8462 && is_branch_reloc (r_type))
8464 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8465 "TLS optimization disabled\n"),
8466 ibfd, sec, rel->r_offset);
8471 found_tls_get_addr_arg = 0;
8474 case R_PPC64_GOT_TLSLD16:
8475 case R_PPC64_GOT_TLSLD16_LO:
8476 expecting_tls_get_addr = 1;
8477 found_tls_get_addr_arg = 1;
8480 case R_PPC64_GOT_TLSLD16_HI:
8481 case R_PPC64_GOT_TLSLD16_HA:
8482 /* These relocs should never be against a symbol
8483 defined in a shared lib. Leave them alone if
8484 that turns out to be the case. */
8491 tls_type = TLS_TLS | TLS_LD;
8494 case R_PPC64_GOT_TLSGD16:
8495 case R_PPC64_GOT_TLSGD16_LO:
8496 expecting_tls_get_addr = 1;
8497 found_tls_get_addr_arg = 1;
8500 case R_PPC64_GOT_TLSGD16_HI:
8501 case R_PPC64_GOT_TLSGD16_HA:
8507 tls_set = TLS_TLS | TLS_TPRELGD;
8509 tls_type = TLS_TLS | TLS_GD;
8512 case R_PPC64_GOT_TPREL16_DS:
8513 case R_PPC64_GOT_TPREL16_LO_DS:
8514 case R_PPC64_GOT_TPREL16_HI:
8515 case R_PPC64_GOT_TPREL16_HA:
8520 tls_clear = TLS_TPREL;
8521 tls_type = TLS_TLS | TLS_TPREL;
8528 found_tls_get_addr_arg = 1;
8533 case R_PPC64_TOC16_LO:
8534 if (sym_sec == NULL || sym_sec != toc)
8537 /* Mark this toc entry as referenced by a TLS
8538 code sequence. We can do that now in the
8539 case of R_PPC64_TLS, and after checking for
8540 tls_get_addr for the TOC16 relocs. */
8541 if (toc_ref == NULL)
8542 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8543 if (toc_ref == NULL)
8547 value = h->root.u.def.value;
8549 value = sym->st_value;
8550 value += rel->r_addend;
8553 BFD_ASSERT (value < toc->size
8554 && toc->output_offset % 8 == 0);
8555 toc_ref_index = (value + toc->output_offset) / 8;
8556 if (r_type == R_PPC64_TLS
8557 || r_type == R_PPC64_TLSGD
8558 || r_type == R_PPC64_TLSLD)
8560 toc_ref[toc_ref_index] = 1;
8564 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8569 expecting_tls_get_addr = 2;
8572 case R_PPC64_TPREL64:
8576 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8581 tls_set = TLS_EXPLICIT;
8582 tls_clear = TLS_TPREL;
8587 case R_PPC64_DTPMOD64:
8591 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8593 if (rel + 1 < relend
8595 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8596 && rel[1].r_offset == rel->r_offset + 8)
8600 tls_set = TLS_EXPLICIT | TLS_GD;
8603 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8612 tls_set = TLS_EXPLICIT;
8623 if (!expecting_tls_get_addr
8624 || !sec->has_tls_get_addr_call)
8627 if (rel + 1 < relend
8628 && branch_reloc_hash_match (ibfd, rel + 1,
8630 htab->tls_get_addr_fd))
8632 if (expecting_tls_get_addr == 2)
8634 /* Check for toc tls entries. */
8635 unsigned char *toc_tls;
8638 retval = get_tls_mask (&toc_tls, NULL, NULL,
8643 if (toc_tls != NULL)
8645 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8646 found_tls_get_addr_arg = 1;
8648 toc_ref[toc_ref_index] = 1;
8654 if (expecting_tls_get_addr != 1)
8657 /* Uh oh, we didn't find the expected call. We
8658 could just mark this symbol to exclude it
8659 from tls optimization but it's safer to skip
8660 the entire optimization. */
8661 /* xgettext:c-format */
8662 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8663 "TLS optimization disabled\n"),
8664 ibfd, sec, rel->r_offset);
8669 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8671 struct plt_entry *ent;
8672 for (ent = htab->tls_get_addr->elf.plt.plist;
8675 if (ent->addend == 0)
8677 if (ent->plt.refcount > 0)
8679 ent->plt.refcount -= 1;
8680 expecting_tls_get_addr = 0;
8686 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8688 struct plt_entry *ent;
8689 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8692 if (ent->addend == 0)
8694 if (ent->plt.refcount > 0)
8695 ent->plt.refcount -= 1;
8703 if ((tls_set & TLS_EXPLICIT) == 0)
8705 struct got_entry *ent;
8707 /* Adjust got entry for this reloc. */
8711 ent = elf_local_got_ents (ibfd)[r_symndx];
8713 for (; ent != NULL; ent = ent->next)
8714 if (ent->addend == rel->r_addend
8715 && ent->owner == ibfd
8716 && ent->tls_type == tls_type)
8723 /* We managed to get rid of a got entry. */
8724 if (ent->got.refcount > 0)
8725 ent->got.refcount -= 1;
8730 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8731 we'll lose one or two dyn relocs. */
8732 if (!dec_dynrel_count (rel->r_info, sec, info,
8736 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8738 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8744 *tls_mask |= tls_set;
8745 *tls_mask &= ~tls_clear;
8748 if (elf_section_data (sec)->relocs != relstart)
8753 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8755 if (!info->keep_memory)
8758 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8762 if (toc_ref != NULL)
8764 htab->do_tls_opt = 1;
8768 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8769 the values of any global symbols in a toc section that has been
8770 edited. Globals in toc sections should be a rarity, so this function
8771 sets a flag if any are found in toc sections other than the one just
8772 edited, so that further hash table traversals can be avoided. */
8774 struct adjust_toc_info
8777 unsigned long *skip;
8778 bfd_boolean global_toc_syms;
8781 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8784 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8786 struct ppc_link_hash_entry *eh;
8787 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8790 if (h->root.type != bfd_link_hash_defined
8791 && h->root.type != bfd_link_hash_defweak)
8794 eh = (struct ppc_link_hash_entry *) h;
8795 if (eh->adjust_done)
8798 if (eh->elf.root.u.def.section == toc_inf->toc)
8800 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8801 i = toc_inf->toc->rawsize >> 3;
8803 i = eh->elf.root.u.def.value >> 3;
8805 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8808 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8811 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8812 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8815 eh->elf.root.u.def.value -= toc_inf->skip[i];
8816 eh->adjust_done = 1;
8818 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8819 toc_inf->global_toc_syms = TRUE;
8824 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8825 on a _LO variety toc/got reloc. */
8828 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8830 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8831 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8832 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8833 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8834 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8835 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8836 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8837 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8838 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8839 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8840 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8841 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8842 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8843 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8844 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8845 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
8846 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8847 /* Exclude lfqu by testing reloc. If relocs are ever
8848 defined for the reduced D field in psq_lu then those
8849 will need testing too. */
8850 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8851 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
8853 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
8854 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8855 /* Exclude stfqu. psq_stu as above for psq_lu. */
8856 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8857 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
8858 && (insn & 1) == 0));
8861 /* Examine all relocs referencing .toc sections in order to remove
8862 unused .toc entries. */
8865 ppc64_elf_edit_toc (struct bfd_link_info *info)
8868 struct adjust_toc_info toc_inf;
8869 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8871 htab->do_toc_opt = 1;
8872 toc_inf.global_toc_syms = TRUE;
8873 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8875 asection *toc, *sec;
8876 Elf_Internal_Shdr *symtab_hdr;
8877 Elf_Internal_Sym *local_syms;
8878 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8879 unsigned long *skip, *drop;
8880 unsigned char *used;
8881 unsigned char *keep, last, some_unused;
8883 if (!is_ppc64_elf (ibfd))
8886 toc = bfd_get_section_by_name (ibfd, ".toc");
8889 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8890 || discarded_section (toc))
8895 symtab_hdr = &elf_symtab_hdr (ibfd);
8897 /* Look at sections dropped from the final link. */
8900 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8902 if (sec->reloc_count == 0
8903 || !discarded_section (sec)
8904 || get_opd_info (sec)
8905 || (sec->flags & SEC_ALLOC) == 0
8906 || (sec->flags & SEC_DEBUGGING) != 0)
8909 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8910 if (relstart == NULL)
8913 /* Run through the relocs to see which toc entries might be
8915 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8917 enum elf_ppc64_reloc_type r_type;
8918 unsigned long r_symndx;
8920 struct elf_link_hash_entry *h;
8921 Elf_Internal_Sym *sym;
8924 r_type = ELF64_R_TYPE (rel->r_info);
8931 case R_PPC64_TOC16_LO:
8932 case R_PPC64_TOC16_HI:
8933 case R_PPC64_TOC16_HA:
8934 case R_PPC64_TOC16_DS:
8935 case R_PPC64_TOC16_LO_DS:
8939 r_symndx = ELF64_R_SYM (rel->r_info);
8940 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8948 val = h->root.u.def.value;
8950 val = sym->st_value;
8951 val += rel->r_addend;
8953 if (val >= toc->size)
8956 /* Anything in the toc ought to be aligned to 8 bytes.
8957 If not, don't mark as unused. */
8963 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8968 skip[val >> 3] = ref_from_discarded;
8971 if (elf_section_data (sec)->relocs != relstart)
8975 /* For largetoc loads of address constants, we can convert
8976 . addis rx,2,addr@got@ha
8977 . ld ry,addr@got@l(rx)
8979 . addis rx,2,addr@toc@ha
8980 . addi ry,rx,addr@toc@l
8981 when addr is within 2G of the toc pointer. This then means
8982 that the word storing "addr" in the toc is no longer needed. */
8984 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8985 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8986 && toc->reloc_count != 0)
8988 /* Read toc relocs. */
8989 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8991 if (toc_relocs == NULL)
8994 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8996 enum elf_ppc64_reloc_type r_type;
8997 unsigned long r_symndx;
8999 struct elf_link_hash_entry *h;
9000 Elf_Internal_Sym *sym;
9003 r_type = ELF64_R_TYPE (rel->r_info);
9004 if (r_type != R_PPC64_ADDR64)
9007 r_symndx = ELF64_R_SYM (rel->r_info);
9008 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9013 || sym_sec->output_section == NULL
9014 || discarded_section (sym_sec))
9017 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9022 if (h->type == STT_GNU_IFUNC)
9024 val = h->root.u.def.value;
9028 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9030 val = sym->st_value;
9032 val += rel->r_addend;
9033 val += sym_sec->output_section->vma + sym_sec->output_offset;
9035 /* We don't yet know the exact toc pointer value, but we
9036 know it will be somewhere in the toc section. Don't
9037 optimize if the difference from any possible toc
9038 pointer is outside [ff..f80008000, 7fff7fff]. */
9039 addr = toc->output_section->vma + TOC_BASE_OFF;
9040 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9043 addr = toc->output_section->vma + toc->output_section->rawsize;
9044 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9049 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9054 skip[rel->r_offset >> 3]
9055 |= can_optimize | ((rel - toc_relocs) << 2);
9062 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9066 if (local_syms != NULL
9067 && symtab_hdr->contents != (unsigned char *) local_syms)
9071 && elf_section_data (sec)->relocs != relstart)
9073 if (toc_relocs != NULL
9074 && elf_section_data (toc)->relocs != toc_relocs)
9081 /* Now check all kept sections that might reference the toc.
9082 Check the toc itself last. */
9083 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9086 sec = (sec == toc ? NULL
9087 : sec->next == NULL ? toc
9088 : sec->next == toc && toc->next ? toc->next
9093 if (sec->reloc_count == 0
9094 || discarded_section (sec)
9095 || get_opd_info (sec)
9096 || (sec->flags & SEC_ALLOC) == 0
9097 || (sec->flags & SEC_DEBUGGING) != 0)
9100 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9102 if (relstart == NULL)
9108 /* Mark toc entries referenced as used. */
9112 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9114 enum elf_ppc64_reloc_type r_type;
9115 unsigned long r_symndx;
9117 struct elf_link_hash_entry *h;
9118 Elf_Internal_Sym *sym;
9120 enum {no_check, check_lo, check_ha} insn_check;
9122 r_type = ELF64_R_TYPE (rel->r_info);
9126 insn_check = no_check;
9129 case R_PPC64_GOT_TLSLD16_HA:
9130 case R_PPC64_GOT_TLSGD16_HA:
9131 case R_PPC64_GOT_TPREL16_HA:
9132 case R_PPC64_GOT_DTPREL16_HA:
9133 case R_PPC64_GOT16_HA:
9134 case R_PPC64_TOC16_HA:
9135 insn_check = check_ha;
9138 case R_PPC64_GOT_TLSLD16_LO:
9139 case R_PPC64_GOT_TLSGD16_LO:
9140 case R_PPC64_GOT_TPREL16_LO_DS:
9141 case R_PPC64_GOT_DTPREL16_LO_DS:
9142 case R_PPC64_GOT16_LO:
9143 case R_PPC64_GOT16_LO_DS:
9144 case R_PPC64_TOC16_LO:
9145 case R_PPC64_TOC16_LO_DS:
9146 insn_check = check_lo;
9150 if (insn_check != no_check)
9152 bfd_vma off = rel->r_offset & ~3;
9153 unsigned char buf[4];
9156 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9161 insn = bfd_get_32 (ibfd, buf);
9162 if (insn_check == check_lo
9163 ? !ok_lo_toc_insn (insn, r_type)
9164 : ((insn & ((0x3f << 26) | 0x1f << 16))
9165 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9169 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9170 sprintf (str, "%#08x", insn);
9171 info->callbacks->einfo
9172 /* xgettext:c-format */
9173 (_("%H: toc optimization is not supported for"
9174 " %s instruction.\n"),
9175 ibfd, sec, rel->r_offset & ~3, str);
9182 case R_PPC64_TOC16_LO:
9183 case R_PPC64_TOC16_HI:
9184 case R_PPC64_TOC16_HA:
9185 case R_PPC64_TOC16_DS:
9186 case R_PPC64_TOC16_LO_DS:
9187 /* In case we're taking addresses of toc entries. */
9188 case R_PPC64_ADDR64:
9195 r_symndx = ELF64_R_SYM (rel->r_info);
9196 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9207 val = h->root.u.def.value;
9209 val = sym->st_value;
9210 val += rel->r_addend;
9212 if (val >= toc->size)
9215 if ((skip[val >> 3] & can_optimize) != 0)
9222 case R_PPC64_TOC16_HA:
9225 case R_PPC64_TOC16_LO_DS:
9226 off = rel->r_offset;
9227 off += (bfd_big_endian (ibfd) ? -2 : 3);
9228 if (!bfd_get_section_contents (ibfd, sec, &opc,
9234 if ((opc & (0x3f << 2)) == (58u << 2))
9239 /* Wrong sort of reloc, or not a ld. We may
9240 as well clear ref_from_discarded too. */
9247 /* For the toc section, we only mark as used if this
9248 entry itself isn't unused. */
9249 else if ((used[rel->r_offset >> 3]
9250 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9253 /* Do all the relocs again, to catch reference
9262 if (elf_section_data (sec)->relocs != relstart)
9266 /* Merge the used and skip arrays. Assume that TOC
9267 doublewords not appearing as either used or unused belong
9268 to an entry more than one doubleword in size. */
9269 for (drop = skip, keep = used, last = 0, some_unused = 0;
9270 drop < skip + (toc->size + 7) / 8;
9275 *drop &= ~ref_from_discarded;
9276 if ((*drop & can_optimize) != 0)
9280 else if ((*drop & ref_from_discarded) != 0)
9283 last = ref_from_discarded;
9293 bfd_byte *contents, *src;
9295 Elf_Internal_Sym *sym;
9296 bfd_boolean local_toc_syms = FALSE;
9298 /* Shuffle the toc contents, and at the same time convert the
9299 skip array from booleans into offsets. */
9300 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9303 elf_section_data (toc)->this_hdr.contents = contents;
9305 for (src = contents, off = 0, drop = skip;
9306 src < contents + toc->size;
9309 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9314 memcpy (src - off, src, 8);
9318 toc->rawsize = toc->size;
9319 toc->size = src - contents - off;
9321 /* Adjust addends for relocs against the toc section sym,
9322 and optimize any accesses we can. */
9323 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9325 if (sec->reloc_count == 0
9326 || discarded_section (sec))
9329 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9331 if (relstart == NULL)
9334 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9336 enum elf_ppc64_reloc_type r_type;
9337 unsigned long r_symndx;
9339 struct elf_link_hash_entry *h;
9342 r_type = ELF64_R_TYPE (rel->r_info);
9349 case R_PPC64_TOC16_LO:
9350 case R_PPC64_TOC16_HI:
9351 case R_PPC64_TOC16_HA:
9352 case R_PPC64_TOC16_DS:
9353 case R_PPC64_TOC16_LO_DS:
9354 case R_PPC64_ADDR64:
9358 r_symndx = ELF64_R_SYM (rel->r_info);
9359 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9367 val = h->root.u.def.value;
9370 val = sym->st_value;
9372 local_toc_syms = TRUE;
9375 val += rel->r_addend;
9377 if (val > toc->rawsize)
9379 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9381 else if ((skip[val >> 3] & can_optimize) != 0)
9383 Elf_Internal_Rela *tocrel
9384 = toc_relocs + (skip[val >> 3] >> 2);
9385 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9389 case R_PPC64_TOC16_HA:
9390 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9393 case R_PPC64_TOC16_LO_DS:
9394 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9398 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9400 info->callbacks->einfo
9401 /* xgettext:c-format */
9402 (_("%H: %s references "
9403 "optimized away TOC entry\n"),
9404 ibfd, sec, rel->r_offset,
9405 ppc64_elf_howto_table[r_type]->name);
9406 bfd_set_error (bfd_error_bad_value);
9409 rel->r_addend = tocrel->r_addend;
9410 elf_section_data (sec)->relocs = relstart;
9414 if (h != NULL || sym->st_value != 0)
9417 rel->r_addend -= skip[val >> 3];
9418 elf_section_data (sec)->relocs = relstart;
9421 if (elf_section_data (sec)->relocs != relstart)
9425 /* We shouldn't have local or global symbols defined in the TOC,
9426 but handle them anyway. */
9427 if (local_syms != NULL)
9428 for (sym = local_syms;
9429 sym < local_syms + symtab_hdr->sh_info;
9431 if (sym->st_value != 0
9432 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9436 if (sym->st_value > toc->rawsize)
9437 i = toc->rawsize >> 3;
9439 i = sym->st_value >> 3;
9441 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9445 (_("%s defined on removed toc entry"),
9446 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9449 while ((skip[i] & (ref_from_discarded | can_optimize)));
9450 sym->st_value = (bfd_vma) i << 3;
9453 sym->st_value -= skip[i];
9454 symtab_hdr->contents = (unsigned char *) local_syms;
9457 /* Adjust any global syms defined in this toc input section. */
9458 if (toc_inf.global_toc_syms)
9461 toc_inf.skip = skip;
9462 toc_inf.global_toc_syms = FALSE;
9463 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9467 if (toc->reloc_count != 0)
9469 Elf_Internal_Shdr *rel_hdr;
9470 Elf_Internal_Rela *wrel;
9473 /* Remove unused toc relocs, and adjust those we keep. */
9474 if (toc_relocs == NULL)
9475 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9477 if (toc_relocs == NULL)
9481 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9482 if ((skip[rel->r_offset >> 3]
9483 & (ref_from_discarded | can_optimize)) == 0)
9485 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9486 wrel->r_info = rel->r_info;
9487 wrel->r_addend = rel->r_addend;
9490 else if (!dec_dynrel_count (rel->r_info, toc, info,
9491 &local_syms, NULL, NULL))
9494 elf_section_data (toc)->relocs = toc_relocs;
9495 toc->reloc_count = wrel - toc_relocs;
9496 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9497 sz = rel_hdr->sh_entsize;
9498 rel_hdr->sh_size = toc->reloc_count * sz;
9501 else if (toc_relocs != NULL
9502 && elf_section_data (toc)->relocs != toc_relocs)
9505 if (local_syms != NULL
9506 && symtab_hdr->contents != (unsigned char *) local_syms)
9508 if (!info->keep_memory)
9511 symtab_hdr->contents = (unsigned char *) local_syms;
9519 /* Return true iff input section I references the TOC using
9520 instructions limited to +/-32k offsets. */
9523 ppc64_elf_has_small_toc_reloc (asection *i)
9525 return (is_ppc64_elf (i->owner)
9526 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9529 /* Allocate space for one GOT entry. */
9532 allocate_got (struct elf_link_hash_entry *h,
9533 struct bfd_link_info *info,
9534 struct got_entry *gent)
9536 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9537 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9538 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9540 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9541 ? 2 : 1) * sizeof (Elf64_External_Rela);
9542 asection *got = ppc64_elf_tdata (gent->owner)->got;
9544 gent->got.offset = got->size;
9545 got->size += entsize;
9547 if (h->type == STT_GNU_IFUNC)
9549 htab->elf.irelplt->size += rentsize;
9550 htab->got_reli_size += rentsize;
9552 else if (((bfd_link_pic (info)
9553 && !((gent->tls_type & TLS_TPREL) != 0
9554 && bfd_link_executable (info)
9555 && SYMBOL_REFERENCES_LOCAL (info, h)))
9556 || (htab->elf.dynamic_sections_created
9558 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9559 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9561 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9562 relgot->size += rentsize;
9566 /* This function merges got entries in the same toc group. */
9569 merge_got_entries (struct got_entry **pent)
9571 struct got_entry *ent, *ent2;
9573 for (ent = *pent; ent != NULL; ent = ent->next)
9574 if (!ent->is_indirect)
9575 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9576 if (!ent2->is_indirect
9577 && ent2->addend == ent->addend
9578 && ent2->tls_type == ent->tls_type
9579 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9581 ent2->is_indirect = TRUE;
9582 ent2->got.ent = ent;
9586 /* If H is undefined, make it dynamic if that makes sense. */
9589 ensure_undef_dynamic (struct bfd_link_info *info,
9590 struct elf_link_hash_entry *h)
9592 struct elf_link_hash_table *htab = elf_hash_table (info);
9594 if (htab->dynamic_sections_created
9595 && ((info->dynamic_undefined_weak != 0
9596 && h->root.type == bfd_link_hash_undefweak)
9597 || h->root.type == bfd_link_hash_undefined)
9600 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9601 return bfd_elf_link_record_dynamic_symbol (info, h);
9605 /* Allocate space in .plt, .got and associated reloc sections for
9609 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9611 struct bfd_link_info *info;
9612 struct ppc_link_hash_table *htab;
9614 struct ppc_link_hash_entry *eh;
9615 struct got_entry **pgent, *gent;
9617 if (h->root.type == bfd_link_hash_indirect)
9620 info = (struct bfd_link_info *) inf;
9621 htab = ppc_hash_table (info);
9625 eh = (struct ppc_link_hash_entry *) h;
9626 /* Run through the TLS GD got entries first if we're changing them
9628 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9629 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9630 if (gent->got.refcount > 0
9631 && (gent->tls_type & TLS_GD) != 0)
9633 /* This was a GD entry that has been converted to TPREL. If
9634 there happens to be a TPREL entry we can use that one. */
9635 struct got_entry *ent;
9636 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9637 if (ent->got.refcount > 0
9638 && (ent->tls_type & TLS_TPREL) != 0
9639 && ent->addend == gent->addend
9640 && ent->owner == gent->owner)
9642 gent->got.refcount = 0;
9646 /* If not, then we'll be using our own TPREL entry. */
9647 if (gent->got.refcount != 0)
9648 gent->tls_type = TLS_TLS | TLS_TPREL;
9651 /* Remove any list entry that won't generate a word in the GOT before
9652 we call merge_got_entries. Otherwise we risk merging to empty
9654 pgent = &h->got.glist;
9655 while ((gent = *pgent) != NULL)
9656 if (gent->got.refcount > 0)
9658 if ((gent->tls_type & TLS_LD) != 0
9661 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9662 *pgent = gent->next;
9665 pgent = &gent->next;
9668 *pgent = gent->next;
9670 if (!htab->do_multi_toc)
9671 merge_got_entries (&h->got.glist);
9673 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9674 if (!gent->is_indirect)
9676 /* Make sure this symbol is output as a dynamic symbol. */
9677 if (!ensure_undef_dynamic (info, h))
9680 if (!is_ppc64_elf (gent->owner))
9683 allocate_got (h, info, gent);
9686 /* If no dynamic sections we can't have dynamic relocs, except for
9687 IFUNCs which are handled even in static executables. */
9688 if (!htab->elf.dynamic_sections_created
9689 && h->type != STT_GNU_IFUNC)
9690 eh->dyn_relocs = NULL;
9692 /* Discard relocs on undefined symbols that must be local. */
9693 else if (h->root.type == bfd_link_hash_undefined
9694 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9695 eh->dyn_relocs = NULL;
9697 /* Also discard relocs on undefined weak syms with non-default
9698 visibility, or when dynamic_undefined_weak says so. */
9699 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9700 eh->dyn_relocs = NULL;
9702 if (eh->dyn_relocs != NULL)
9704 struct elf_dyn_relocs *p, **pp;
9706 /* In the shared -Bsymbolic case, discard space allocated for
9707 dynamic pc-relative relocs against symbols which turn out to
9708 be defined in regular objects. For the normal shared case,
9709 discard space for relocs that have become local due to symbol
9710 visibility changes. */
9712 if (bfd_link_pic (info))
9714 /* Relocs that use pc_count are those that appear on a call
9715 insn, or certain REL relocs (see must_be_dyn_reloc) that
9716 can be generated via assembly. We want calls to
9717 protected symbols to resolve directly to the function
9718 rather than going via the plt. If people want function
9719 pointer comparisons to work as expected then they should
9720 avoid writing weird assembly. */
9721 if (SYMBOL_CALLS_LOCAL (info, h))
9723 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9725 p->count -= p->pc_count;
9734 if (eh->dyn_relocs != NULL)
9736 /* Make sure this symbol is output as a dynamic symbol. */
9737 if (!ensure_undef_dynamic (info, h))
9741 else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC)
9743 /* For the non-pic case, discard space for relocs against
9744 symbols which turn out to need copy relocs or are not
9746 if (h->dynamic_adjusted
9748 && !ELF_COMMON_DEF_P (h))
9750 /* Make sure this symbol is output as a dynamic symbol. */
9751 if (!ensure_undef_dynamic (info, h))
9754 if (h->dynindx == -1)
9755 eh->dyn_relocs = NULL;
9758 eh->dyn_relocs = NULL;
9761 /* Finally, allocate space. */
9762 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9764 asection *sreloc = elf_section_data (p->sec)->sreloc;
9765 if (eh->elf.type == STT_GNU_IFUNC)
9766 sreloc = htab->elf.irelplt;
9767 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9771 if ((htab->elf.dynamic_sections_created
9772 && h->dynindx != -1)
9773 || h->type == STT_GNU_IFUNC)
9775 struct plt_entry *pent;
9776 bfd_boolean doneone = FALSE;
9777 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9778 if (pent->plt.refcount > 0)
9780 if (!htab->elf.dynamic_sections_created
9781 || h->dynindx == -1)
9784 pent->plt.offset = s->size;
9785 s->size += PLT_ENTRY_SIZE (htab);
9786 s = htab->elf.irelplt;
9790 /* If this is the first .plt entry, make room for the special
9794 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9796 pent->plt.offset = s->size;
9798 /* Make room for this entry. */
9799 s->size += PLT_ENTRY_SIZE (htab);
9801 /* Make room for the .glink code. */
9804 s->size += GLINK_CALL_STUB_SIZE;
9807 /* We need bigger stubs past index 32767. */
9808 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9815 /* We also need to make an entry in the .rela.plt section. */
9816 s = htab->elf.srelplt;
9818 s->size += sizeof (Elf64_External_Rela);
9822 pent->plt.offset = (bfd_vma) -1;
9825 h->plt.plist = NULL;
9831 h->plt.plist = NULL;
9838 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9839 to set up space for global entry stubs. These are put in glink,
9840 after the branch table. */
9843 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9845 struct bfd_link_info *info;
9846 struct ppc_link_hash_table *htab;
9847 struct plt_entry *pent;
9850 if (h->root.type == bfd_link_hash_indirect)
9853 if (!h->pointer_equality_needed)
9860 htab = ppc_hash_table (info);
9865 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9866 if (pent->plt.offset != (bfd_vma) -1
9867 && pent->addend == 0)
9869 /* For ELFv2, if this symbol is not defined in a regular file
9870 and we are not generating a shared library or pie, then we
9871 need to define the symbol in the executable on a call stub.
9872 This is to avoid text relocations. */
9873 s->size = (s->size + 15) & -16;
9874 h->root.type = bfd_link_hash_defined;
9875 h->root.u.def.section = s;
9876 h->root.u.def.value = s->size;
9883 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9884 read-only sections. */
9887 maybe_set_textrel (struct elf_link_hash_entry *h, void *inf)
9891 if (h->root.type == bfd_link_hash_indirect)
9894 sec = readonly_dynrelocs (h);
9897 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9899 info->flags |= DF_TEXTREL;
9900 info->callbacks->minfo
9901 (_("%B: dynamic relocation in read-only section `%A'\n"),
9904 /* Not an error, just cut short the traversal. */
9910 /* Set the sizes of the dynamic sections. */
9913 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9914 struct bfd_link_info *info)
9916 struct ppc_link_hash_table *htab;
9921 struct got_entry *first_tlsld;
9923 htab = ppc_hash_table (info);
9927 dynobj = htab->elf.dynobj;
9931 if (htab->elf.dynamic_sections_created)
9933 /* Set the contents of the .interp section to the interpreter. */
9934 if (bfd_link_executable (info) && !info->nointerp)
9936 s = bfd_get_linker_section (dynobj, ".interp");
9939 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9940 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9944 /* Set up .got offsets for local syms, and space for local dynamic
9946 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9948 struct got_entry **lgot_ents;
9949 struct got_entry **end_lgot_ents;
9950 struct plt_entry **local_plt;
9951 struct plt_entry **end_local_plt;
9952 unsigned char *lgot_masks;
9953 bfd_size_type locsymcount;
9954 Elf_Internal_Shdr *symtab_hdr;
9956 if (!is_ppc64_elf (ibfd))
9959 for (s = ibfd->sections; s != NULL; s = s->next)
9961 struct ppc_dyn_relocs *p;
9963 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9965 if (!bfd_is_abs_section (p->sec)
9966 && bfd_is_abs_section (p->sec->output_section))
9968 /* Input section has been discarded, either because
9969 it is a copy of a linkonce section or due to
9970 linker script /DISCARD/, so we'll be discarding
9973 else if (p->count != 0)
9975 asection *srel = elf_section_data (p->sec)->sreloc;
9977 srel = htab->elf.irelplt;
9978 srel->size += p->count * sizeof (Elf64_External_Rela);
9979 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9980 info->flags |= DF_TEXTREL;
9985 lgot_ents = elf_local_got_ents (ibfd);
9989 symtab_hdr = &elf_symtab_hdr (ibfd);
9990 locsymcount = symtab_hdr->sh_info;
9991 end_lgot_ents = lgot_ents + locsymcount;
9992 local_plt = (struct plt_entry **) end_lgot_ents;
9993 end_local_plt = local_plt + locsymcount;
9994 lgot_masks = (unsigned char *) end_local_plt;
9995 s = ppc64_elf_tdata (ibfd)->got;
9996 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9998 struct got_entry **pent, *ent;
10001 while ((ent = *pent) != NULL)
10002 if (ent->got.refcount > 0)
10004 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10006 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10011 unsigned int ent_size = 8;
10012 unsigned int rel_size = sizeof (Elf64_External_Rela);
10014 ent->got.offset = s->size;
10015 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10020 s->size += ent_size;
10021 if ((*lgot_masks & PLT_IFUNC) != 0)
10023 htab->elf.irelplt->size += rel_size;
10024 htab->got_reli_size += rel_size;
10026 else if (bfd_link_pic (info)
10027 && !((ent->tls_type & TLS_TPREL) != 0
10028 && bfd_link_executable (info)))
10030 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10031 srel->size += rel_size;
10040 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10041 for (; local_plt < end_local_plt; ++local_plt)
10043 struct plt_entry *ent;
10045 for (ent = *local_plt; ent != NULL; ent = ent->next)
10046 if (ent->plt.refcount > 0)
10048 s = htab->elf.iplt;
10049 ent->plt.offset = s->size;
10050 s->size += PLT_ENTRY_SIZE (htab);
10052 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10055 ent->plt.offset = (bfd_vma) -1;
10059 /* Allocate global sym .plt and .got entries, and space for global
10060 sym dynamic relocs. */
10061 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10062 /* Stash the end of glink branch table. */
10063 if (htab->glink != NULL)
10064 htab->glink->rawsize = htab->glink->size;
10066 if (!htab->opd_abi && !bfd_link_pic (info))
10067 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10069 first_tlsld = NULL;
10070 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10072 struct got_entry *ent;
10074 if (!is_ppc64_elf (ibfd))
10077 ent = ppc64_tlsld_got (ibfd);
10078 if (ent->got.refcount > 0)
10080 if (!htab->do_multi_toc && first_tlsld != NULL)
10082 ent->is_indirect = TRUE;
10083 ent->got.ent = first_tlsld;
10087 if (first_tlsld == NULL)
10089 s = ppc64_elf_tdata (ibfd)->got;
10090 ent->got.offset = s->size;
10093 if (bfd_link_pic (info))
10095 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10096 srel->size += sizeof (Elf64_External_Rela);
10101 ent->got.offset = (bfd_vma) -1;
10104 /* We now have determined the sizes of the various dynamic sections.
10105 Allocate memory for them. */
10107 for (s = dynobj->sections; s != NULL; s = s->next)
10109 if ((s->flags & SEC_LINKER_CREATED) == 0)
10112 if (s == htab->brlt || s == htab->relbrlt)
10113 /* These haven't been allocated yet; don't strip. */
10115 else if (s == htab->elf.sgot
10116 || s == htab->elf.splt
10117 || s == htab->elf.iplt
10118 || s == htab->glink
10119 || s == htab->elf.sdynbss
10120 || s == htab->elf.sdynrelro)
10122 /* Strip this section if we don't need it; see the
10125 else if (s == htab->glink_eh_frame)
10127 if (!bfd_is_abs_section (s->output_section))
10128 /* Not sized yet. */
10131 else if (CONST_STRNEQ (s->name, ".rela"))
10135 if (s != htab->elf.srelplt)
10138 /* We use the reloc_count field as a counter if we need
10139 to copy relocs into the output file. */
10140 s->reloc_count = 0;
10145 /* It's not one of our sections, so don't allocate space. */
10151 /* If we don't need this section, strip it from the
10152 output file. This is mostly to handle .rela.bss and
10153 .rela.plt. We must create both sections in
10154 create_dynamic_sections, because they must be created
10155 before the linker maps input sections to output
10156 sections. The linker does that before
10157 adjust_dynamic_symbol is called, and it is that
10158 function which decides whether anything needs to go
10159 into these sections. */
10160 s->flags |= SEC_EXCLUDE;
10164 if (bfd_is_abs_section (s->output_section))
10165 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10168 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10171 /* Allocate memory for the section contents. We use bfd_zalloc
10172 here in case unused entries are not reclaimed before the
10173 section's contents are written out. This should not happen,
10174 but this way if it does we get a R_PPC64_NONE reloc in .rela
10175 sections instead of garbage.
10176 We also rely on the section contents being zero when writing
10177 the GOT and .dynrelro. */
10178 s->contents = bfd_zalloc (dynobj, s->size);
10179 if (s->contents == NULL)
10183 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10185 if (!is_ppc64_elf (ibfd))
10188 s = ppc64_elf_tdata (ibfd)->got;
10189 if (s != NULL && s != htab->elf.sgot)
10192 s->flags |= SEC_EXCLUDE;
10195 s->contents = bfd_zalloc (ibfd, s->size);
10196 if (s->contents == NULL)
10200 s = ppc64_elf_tdata (ibfd)->relgot;
10204 s->flags |= SEC_EXCLUDE;
10207 s->contents = bfd_zalloc (ibfd, s->size);
10208 if (s->contents == NULL)
10211 s->reloc_count = 0;
10216 if (htab->elf.dynamic_sections_created)
10218 bfd_boolean tls_opt;
10220 /* Add some entries to the .dynamic section. We fill in the
10221 values later, in ppc64_elf_finish_dynamic_sections, but we
10222 must add the entries now so that we get the correct size for
10223 the .dynamic section. The DT_DEBUG entry is filled in by the
10224 dynamic linker and used by the debugger. */
10225 #define add_dynamic_entry(TAG, VAL) \
10226 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10228 if (bfd_link_executable (info))
10230 if (!add_dynamic_entry (DT_DEBUG, 0))
10234 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10236 if (!add_dynamic_entry (DT_PLTGOT, 0)
10237 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10238 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10239 || !add_dynamic_entry (DT_JMPREL, 0)
10240 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10244 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10246 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10247 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10251 tls_opt = (htab->params->tls_get_addr_opt
10252 && htab->tls_get_addr_fd != NULL
10253 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10254 if (tls_opt || !htab->opd_abi)
10256 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10262 if (!add_dynamic_entry (DT_RELA, 0)
10263 || !add_dynamic_entry (DT_RELASZ, 0)
10264 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10267 /* If any dynamic relocs apply to a read-only section,
10268 then we need a DT_TEXTREL entry. */
10269 if ((info->flags & DF_TEXTREL) == 0)
10270 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10272 if ((info->flags & DF_TEXTREL) != 0)
10274 if (!add_dynamic_entry (DT_TEXTREL, 0))
10279 #undef add_dynamic_entry
10284 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10287 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10289 if (h->plt.plist != NULL
10291 && !h->pointer_equality_needed)
10294 return _bfd_elf_hash_symbol (h);
10297 /* Determine the type of stub needed, if any, for a call. */
10299 static inline enum ppc_stub_type
10300 ppc_type_of_stub (asection *input_sec,
10301 const Elf_Internal_Rela *rel,
10302 struct ppc_link_hash_entry **hash,
10303 struct plt_entry **plt_ent,
10304 bfd_vma destination,
10305 unsigned long local_off)
10307 struct ppc_link_hash_entry *h = *hash;
10309 bfd_vma branch_offset;
10310 bfd_vma max_branch_offset;
10311 enum elf_ppc64_reloc_type r_type;
10315 struct plt_entry *ent;
10316 struct ppc_link_hash_entry *fdh = h;
10318 && h->oh->is_func_descriptor)
10320 fdh = ppc_follow_link (h->oh);
10324 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10325 if (ent->addend == rel->r_addend
10326 && ent->plt.offset != (bfd_vma) -1)
10329 return ppc_stub_plt_call;
10332 /* Here, we know we don't have a plt entry. If we don't have a
10333 either a defined function descriptor or a defined entry symbol
10334 in a regular object file, then it is pointless trying to make
10335 any other type of stub. */
10336 if (!is_static_defined (&fdh->elf)
10337 && !is_static_defined (&h->elf))
10338 return ppc_stub_none;
10340 else if (elf_local_got_ents (input_sec->owner) != NULL)
10342 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10343 struct plt_entry **local_plt = (struct plt_entry **)
10344 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10345 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10347 if (local_plt[r_symndx] != NULL)
10349 struct plt_entry *ent;
10351 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10352 if (ent->addend == rel->r_addend
10353 && ent->plt.offset != (bfd_vma) -1)
10356 return ppc_stub_plt_call;
10361 /* Determine where the call point is. */
10362 location = (input_sec->output_offset
10363 + input_sec->output_section->vma
10366 branch_offset = destination - location;
10367 r_type = ELF64_R_TYPE (rel->r_info);
10369 /* Determine if a long branch stub is needed. */
10370 max_branch_offset = 1 << 25;
10371 if (r_type != R_PPC64_REL24)
10372 max_branch_offset = 1 << 15;
10374 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10375 /* We need a stub. Figure out whether a long_branch or plt_branch
10376 is needed later. */
10377 return ppc_stub_long_branch;
10379 return ppc_stub_none;
10382 /* With power7 weakly ordered memory model, it is possible for ld.so
10383 to update a plt entry in one thread and have another thread see a
10384 stale zero toc entry. To avoid this we need some sort of acquire
10385 barrier in the call stub. One solution is to make the load of the
10386 toc word seem to appear to depend on the load of the function entry
10387 word. Another solution is to test for r2 being zero, and branch to
10388 the appropriate glink entry if so.
10390 . fake dep barrier compare
10391 . ld 12,xxx(2) ld 12,xxx(2)
10392 . mtctr 12 mtctr 12
10393 . xor 11,12,12 ld 2,xxx+8(2)
10394 . add 2,2,11 cmpldi 2,0
10395 . ld 2,xxx+8(2) bnectr+
10396 . bctr b <glink_entry>
10398 The solution involving the compare turns out to be faster, so
10399 that's what we use unless the branch won't reach. */
10401 #define ALWAYS_USE_FAKE_DEP 0
10402 #define ALWAYS_EMIT_R2SAVE 0
10404 #define PPC_LO(v) ((v) & 0xffff)
10405 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10406 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10408 static inline unsigned int
10409 plt_stub_size (struct ppc_link_hash_table *htab,
10410 struct ppc_stub_hash_entry *stub_entry,
10413 unsigned size = 12;
10415 if (ALWAYS_EMIT_R2SAVE
10416 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10418 if (PPC_HA (off) != 0)
10423 if (htab->params->plt_static_chain)
10425 if (htab->params->plt_thread_safe
10426 && htab->elf.dynamic_sections_created
10427 && stub_entry->h != NULL
10428 && stub_entry->h->elf.dynindx != -1)
10430 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10433 if (stub_entry->h != NULL
10434 && (stub_entry->h == htab->tls_get_addr_fd
10435 || stub_entry->h == htab->tls_get_addr)
10436 && htab->params->tls_get_addr_opt)
10439 if (ALWAYS_EMIT_R2SAVE
10440 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10446 /* Depending on the sign of plt_stub_align:
10447 If positive, return the padding to align to a 2**plt_stub_align
10449 If negative, if this stub would cross fewer 2**plt_stub_align
10450 boundaries if we align, then return the padding needed to do so. */
10452 static inline unsigned int
10453 plt_stub_pad (struct ppc_link_hash_table *htab,
10454 struct ppc_stub_hash_entry *stub_entry,
10458 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10459 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10461 if (htab->params->plt_stub_align >= 0)
10463 stub_align = 1 << htab->params->plt_stub_align;
10464 if ((stub_off & (stub_align - 1)) != 0)
10465 return stub_align - (stub_off & (stub_align - 1));
10469 stub_align = 1 << -htab->params->plt_stub_align;
10470 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10471 > ((stub_size - 1) & -stub_align))
10472 return stub_align - (stub_off & (stub_align - 1));
10476 /* Build a .plt call stub. */
10478 static inline bfd_byte *
10479 build_plt_stub (struct ppc_link_hash_table *htab,
10480 struct ppc_stub_hash_entry *stub_entry,
10481 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10483 bfd *obfd = htab->params->stub_bfd;
10484 bfd_boolean plt_load_toc = htab->opd_abi;
10485 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10486 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10487 && htab->elf.dynamic_sections_created
10488 && stub_entry->h != NULL
10489 && stub_entry->h->elf.dynindx != -1);
10490 bfd_boolean use_fake_dep = plt_thread_safe;
10491 bfd_vma cmp_branch_off = 0;
10493 if (!ALWAYS_USE_FAKE_DEP
10496 && !((stub_entry->h == htab->tls_get_addr_fd
10497 || stub_entry->h == htab->tls_get_addr)
10498 && htab->params->tls_get_addr_opt))
10500 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10501 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10502 / PLT_ENTRY_SIZE (htab));
10503 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10506 if (pltindex > 32768)
10507 glinkoff += (pltindex - 32768) * 4;
10509 + htab->glink->output_offset
10510 + htab->glink->output_section->vma);
10511 from = (p - stub_entry->group->stub_sec->contents
10512 + 4 * (ALWAYS_EMIT_R2SAVE
10513 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10514 + 4 * (PPC_HA (offset) != 0)
10515 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10516 != PPC_HA (offset))
10517 + 4 * (plt_static_chain != 0)
10519 + stub_entry->group->stub_sec->output_offset
10520 + stub_entry->group->stub_sec->output_section->vma);
10521 cmp_branch_off = to - from;
10522 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10525 if (PPC_HA (offset) != 0)
10529 if (ALWAYS_EMIT_R2SAVE
10530 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10531 r[0].r_offset += 4;
10532 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10533 r[1].r_offset = r[0].r_offset + 4;
10534 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10535 r[1].r_addend = r[0].r_addend;
10538 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10540 r[2].r_offset = r[1].r_offset + 4;
10541 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10542 r[2].r_addend = r[0].r_addend;
10546 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10547 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10548 r[2].r_addend = r[0].r_addend + 8;
10549 if (plt_static_chain)
10551 r[3].r_offset = r[2].r_offset + 4;
10552 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10553 r[3].r_addend = r[0].r_addend + 16;
10558 if (ALWAYS_EMIT_R2SAVE
10559 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10560 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10563 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10564 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10568 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10569 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10572 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10574 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10577 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10582 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10583 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10585 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10586 if (plt_static_chain)
10587 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10594 if (ALWAYS_EMIT_R2SAVE
10595 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10596 r[0].r_offset += 4;
10597 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10600 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10602 r[1].r_offset = r[0].r_offset + 4;
10603 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10604 r[1].r_addend = r[0].r_addend;
10608 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10609 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10610 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10611 if (plt_static_chain)
10613 r[2].r_offset = r[1].r_offset + 4;
10614 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10615 r[2].r_addend = r[0].r_addend + 8;
10620 if (ALWAYS_EMIT_R2SAVE
10621 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10622 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10623 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10625 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10627 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10630 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10635 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10636 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10638 if (plt_static_chain)
10639 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10640 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10643 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10645 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10646 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10647 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10650 bfd_put_32 (obfd, BCTR, p), p += 4;
10654 /* Build a special .plt call stub for __tls_get_addr. */
10656 #define LD_R11_0R3 0xe9630000
10657 #define LD_R12_0R3 0xe9830000
10658 #define MR_R0_R3 0x7c601b78
10659 #define CMPDI_R11_0 0x2c2b0000
10660 #define ADD_R3_R12_R13 0x7c6c6a14
10661 #define BEQLR 0x4d820020
10662 #define MR_R3_R0 0x7c030378
10663 #define STD_R11_0R1 0xf9610000
10664 #define BCTRL 0x4e800421
10665 #define LD_R11_0R1 0xe9610000
10666 #define MTLR_R11 0x7d6803a6
10668 static inline bfd_byte *
10669 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10670 struct ppc_stub_hash_entry *stub_entry,
10671 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10673 bfd *obfd = htab->params->stub_bfd;
10675 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10676 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10677 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10678 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10679 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10680 bfd_put_32 (obfd, BEQLR, p), p += 4;
10681 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10683 r[0].r_offset += 7 * 4;
10684 if (!ALWAYS_EMIT_R2SAVE
10685 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10686 return build_plt_stub (htab, stub_entry, p, offset, r);
10688 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10689 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10692 r[0].r_offset += 2 * 4;
10693 p = build_plt_stub (htab, stub_entry, p, offset, r);
10694 bfd_put_32 (obfd, BCTRL, p - 4);
10696 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10697 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10698 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10699 bfd_put_32 (obfd, BLR, p), p += 4;
10704 static Elf_Internal_Rela *
10705 get_relocs (asection *sec, int count)
10707 Elf_Internal_Rela *relocs;
10708 struct bfd_elf_section_data *elfsec_data;
10710 elfsec_data = elf_section_data (sec);
10711 relocs = elfsec_data->relocs;
10712 if (relocs == NULL)
10714 bfd_size_type relsize;
10715 relsize = sec->reloc_count * sizeof (*relocs);
10716 relocs = bfd_alloc (sec->owner, relsize);
10717 if (relocs == NULL)
10719 elfsec_data->relocs = relocs;
10720 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10721 sizeof (Elf_Internal_Shdr));
10722 if (elfsec_data->rela.hdr == NULL)
10724 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10725 * sizeof (Elf64_External_Rela));
10726 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10727 sec->reloc_count = 0;
10729 relocs += sec->reloc_count;
10730 sec->reloc_count += count;
10735 get_r2off (struct bfd_link_info *info,
10736 struct ppc_stub_hash_entry *stub_entry)
10738 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10739 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10743 /* Support linking -R objects. Get the toc pointer from the
10746 if (!htab->opd_abi)
10748 asection *opd = stub_entry->h->elf.root.u.def.section;
10749 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10751 if (strcmp (opd->name, ".opd") != 0
10752 || opd->reloc_count != 0)
10754 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10755 stub_entry->h->elf.root.root.string);
10756 bfd_set_error (bfd_error_bad_value);
10757 return (bfd_vma) -1;
10759 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10760 return (bfd_vma) -1;
10761 r2off = bfd_get_64 (opd->owner, buf);
10762 r2off -= elf_gp (info->output_bfd);
10764 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10769 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10771 struct ppc_stub_hash_entry *stub_entry;
10772 struct ppc_branch_hash_entry *br_entry;
10773 struct bfd_link_info *info;
10774 struct ppc_link_hash_table *htab;
10779 Elf_Internal_Rela *r;
10782 /* Massage our args to the form they really have. */
10783 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10786 htab = ppc_hash_table (info);
10790 /* Make a note of the offset within the stubs for this entry. */
10791 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10792 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10794 htab->stub_count[stub_entry->stub_type - 1] += 1;
10795 switch (stub_entry->stub_type)
10797 case ppc_stub_long_branch:
10798 case ppc_stub_long_branch_r2off:
10799 /* Branches are relative. This is where we are going to. */
10800 dest = (stub_entry->target_value
10801 + stub_entry->target_section->output_offset
10802 + stub_entry->target_section->output_section->vma);
10803 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10806 /* And this is where we are coming from. */
10807 off -= (stub_entry->stub_offset
10808 + stub_entry->group->stub_sec->output_offset
10809 + stub_entry->group->stub_sec->output_section->vma);
10812 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10814 bfd_vma r2off = get_r2off (info, stub_entry);
10816 if (r2off == (bfd_vma) -1)
10818 htab->stub_error = TRUE;
10821 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10824 if (PPC_HA (r2off) != 0)
10826 bfd_put_32 (htab->params->stub_bfd,
10827 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10831 if (PPC_LO (r2off) != 0)
10833 bfd_put_32 (htab->params->stub_bfd,
10834 ADDI_R2_R2 | PPC_LO (r2off), loc);
10840 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10842 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10844 info->callbacks->einfo
10845 (_("%P: long branch stub `%s' offset overflow\n"),
10846 stub_entry->root.string);
10847 htab->stub_error = TRUE;
10851 if (info->emitrelocations)
10853 r = get_relocs (stub_entry->group->stub_sec, 1);
10856 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10857 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10858 r->r_addend = dest;
10859 if (stub_entry->h != NULL)
10861 struct elf_link_hash_entry **hashes;
10862 unsigned long symndx;
10863 struct ppc_link_hash_entry *h;
10865 hashes = elf_sym_hashes (htab->params->stub_bfd);
10866 if (hashes == NULL)
10868 bfd_size_type hsize;
10870 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10871 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10872 if (hashes == NULL)
10874 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10875 htab->stub_globals = 1;
10877 symndx = htab->stub_globals++;
10879 hashes[symndx] = &h->elf;
10880 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10881 if (h->oh != NULL && h->oh->is_func)
10882 h = ppc_follow_link (h->oh);
10883 if (h->elf.root.u.def.section != stub_entry->target_section)
10884 /* H is an opd symbol. The addend must be zero. */
10888 off = (h->elf.root.u.def.value
10889 + h->elf.root.u.def.section->output_offset
10890 + h->elf.root.u.def.section->output_section->vma);
10891 r->r_addend -= off;
10897 case ppc_stub_plt_branch:
10898 case ppc_stub_plt_branch_r2off:
10899 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10900 stub_entry->root.string + 9,
10902 if (br_entry == NULL)
10904 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10905 stub_entry->root.string);
10906 htab->stub_error = TRUE;
10910 dest = (stub_entry->target_value
10911 + stub_entry->target_section->output_offset
10912 + stub_entry->target_section->output_section->vma);
10913 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10914 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10916 bfd_put_64 (htab->brlt->owner, dest,
10917 htab->brlt->contents + br_entry->offset);
10919 if (br_entry->iter == htab->stub_iteration)
10921 br_entry->iter = 0;
10923 if (htab->relbrlt != NULL)
10925 /* Create a reloc for the branch lookup table entry. */
10926 Elf_Internal_Rela rela;
10929 rela.r_offset = (br_entry->offset
10930 + htab->brlt->output_offset
10931 + htab->brlt->output_section->vma);
10932 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10933 rela.r_addend = dest;
10935 rl = htab->relbrlt->contents;
10936 rl += (htab->relbrlt->reloc_count++
10937 * sizeof (Elf64_External_Rela));
10938 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10940 else if (info->emitrelocations)
10942 r = get_relocs (htab->brlt, 1);
10945 /* brlt, being SEC_LINKER_CREATED does not go through the
10946 normal reloc processing. Symbols and offsets are not
10947 translated from input file to output file form, so
10948 set up the offset per the output file. */
10949 r->r_offset = (br_entry->offset
10950 + htab->brlt->output_offset
10951 + htab->brlt->output_section->vma);
10952 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10953 r->r_addend = dest;
10957 dest = (br_entry->offset
10958 + htab->brlt->output_offset
10959 + htab->brlt->output_section->vma);
10962 - elf_gp (info->output_bfd)
10963 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
10965 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10967 info->callbacks->einfo
10968 (_("%P: linkage table error against `%T'\n"),
10969 stub_entry->root.string);
10970 bfd_set_error (bfd_error_bad_value);
10971 htab->stub_error = TRUE;
10975 if (info->emitrelocations)
10977 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
10980 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
10981 if (bfd_big_endian (info->output_bfd))
10982 r[0].r_offset += 2;
10983 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10984 r[0].r_offset += 4;
10985 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10986 r[0].r_addend = dest;
10987 if (PPC_HA (off) != 0)
10989 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10990 r[1].r_offset = r[0].r_offset + 4;
10991 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10992 r[1].r_addend = r[0].r_addend;
10996 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10998 if (PPC_HA (off) != 0)
11001 bfd_put_32 (htab->params->stub_bfd,
11002 ADDIS_R12_R2 | PPC_HA (off), loc);
11004 bfd_put_32 (htab->params->stub_bfd,
11005 LD_R12_0R12 | PPC_LO (off), loc);
11010 bfd_put_32 (htab->params->stub_bfd,
11011 LD_R12_0R2 | PPC_LO (off), loc);
11016 bfd_vma r2off = get_r2off (info, stub_entry);
11018 if (r2off == (bfd_vma) -1)
11020 htab->stub_error = TRUE;
11024 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11027 if (PPC_HA (off) != 0)
11030 bfd_put_32 (htab->params->stub_bfd,
11031 ADDIS_R12_R2 | PPC_HA (off), loc);
11033 bfd_put_32 (htab->params->stub_bfd,
11034 LD_R12_0R12 | PPC_LO (off), loc);
11037 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11039 if (PPC_HA (r2off) != 0)
11043 bfd_put_32 (htab->params->stub_bfd,
11044 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11046 if (PPC_LO (r2off) != 0)
11050 bfd_put_32 (htab->params->stub_bfd,
11051 ADDI_R2_R2 | PPC_LO (r2off), loc);
11055 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11057 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11060 case ppc_stub_plt_call:
11061 case ppc_stub_plt_call_r2save:
11062 if (stub_entry->h != NULL
11063 && stub_entry->h->is_func_descriptor
11064 && stub_entry->h->oh != NULL)
11066 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11068 /* If the old-ABI "dot-symbol" is undefined make it weak so
11069 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11070 if (fh->elf.root.type == bfd_link_hash_undefined
11071 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11072 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11073 fh->elf.root.type = bfd_link_hash_undefweak;
11076 /* Now build the stub. */
11077 dest = stub_entry->plt_ent->plt.offset & ~1;
11078 if (dest >= (bfd_vma) -2)
11081 plt = htab->elf.splt;
11082 if (!htab->elf.dynamic_sections_created
11083 || stub_entry->h == NULL
11084 || stub_entry->h->elf.dynindx == -1)
11085 plt = htab->elf.iplt;
11087 dest += plt->output_offset + plt->output_section->vma;
11089 if (stub_entry->h == NULL
11090 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11092 Elf_Internal_Rela rela;
11095 rela.r_offset = dest;
11097 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11099 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11100 rela.r_addend = (stub_entry->target_value
11101 + stub_entry->target_section->output_offset
11102 + stub_entry->target_section->output_section->vma);
11104 rl = (htab->elf.irelplt->contents
11105 + (htab->elf.irelplt->reloc_count++
11106 * sizeof (Elf64_External_Rela)));
11107 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11108 stub_entry->plt_ent->plt.offset |= 1;
11109 htab->local_ifunc_resolver = 1;
11113 - elf_gp (info->output_bfd)
11114 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11116 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11118 info->callbacks->einfo
11119 /* xgettext:c-format */
11120 (_("%P: linkage table error against `%T'\n"),
11121 stub_entry->h != NULL
11122 ? stub_entry->h->elf.root.root.string
11124 bfd_set_error (bfd_error_bad_value);
11125 htab->stub_error = TRUE;
11129 if (htab->params->plt_stub_align != 0)
11131 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11133 stub_entry->group->stub_sec->size += pad;
11134 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11139 if (info->emitrelocations)
11141 r = get_relocs (stub_entry->group->stub_sec,
11142 ((PPC_HA (off) != 0)
11144 ? 2 + (htab->params->plt_static_chain
11145 && PPC_HA (off + 16) == PPC_HA (off))
11149 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11150 if (bfd_big_endian (info->output_bfd))
11151 r[0].r_offset += 2;
11152 r[0].r_addend = dest;
11154 if (stub_entry->h != NULL
11155 && (stub_entry->h == htab->tls_get_addr_fd
11156 || stub_entry->h == htab->tls_get_addr)
11157 && htab->params->tls_get_addr_opt)
11158 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11160 p = build_plt_stub (htab, stub_entry, loc, off, r);
11164 case ppc_stub_save_res:
11172 stub_entry->group->stub_sec->size += size;
11174 if (htab->params->emit_stub_syms)
11176 struct elf_link_hash_entry *h;
11179 const char *const stub_str[] = { "long_branch",
11180 "long_branch_r2off",
11182 "plt_branch_r2off",
11186 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11187 len2 = strlen (stub_entry->root.string);
11188 name = bfd_malloc (len1 + len2 + 2);
11191 memcpy (name, stub_entry->root.string, 9);
11192 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11193 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11194 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11197 if (h->root.type == bfd_link_hash_new)
11199 h->root.type = bfd_link_hash_defined;
11200 h->root.u.def.section = stub_entry->group->stub_sec;
11201 h->root.u.def.value = stub_entry->stub_offset;
11202 h->ref_regular = 1;
11203 h->def_regular = 1;
11204 h->ref_regular_nonweak = 1;
11205 h->forced_local = 1;
11207 h->root.linker_def = 1;
11214 /* As above, but don't actually build the stub. Just bump offset so
11215 we know stub section sizes, and select plt_branch stubs where
11216 long_branch stubs won't do. */
11219 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11221 struct ppc_stub_hash_entry *stub_entry;
11222 struct bfd_link_info *info;
11223 struct ppc_link_hash_table *htab;
11227 /* Massage our args to the form they really have. */
11228 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11231 htab = ppc_hash_table (info);
11235 if (stub_entry->h != NULL
11236 && stub_entry->h->save_res
11237 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11238 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11240 /* Don't make stubs to out-of-line register save/restore
11241 functions. Instead, emit copies of the functions. */
11242 stub_entry->group->needs_save_res = 1;
11243 stub_entry->stub_type = ppc_stub_save_res;
11247 if (stub_entry->stub_type == ppc_stub_plt_call
11248 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11251 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11252 if (off >= (bfd_vma) -2)
11254 plt = htab->elf.splt;
11255 if (!htab->elf.dynamic_sections_created
11256 || stub_entry->h == NULL
11257 || stub_entry->h->elf.dynindx == -1)
11258 plt = htab->elf.iplt;
11259 off += (plt->output_offset
11260 + plt->output_section->vma
11261 - elf_gp (info->output_bfd)
11262 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11264 size = plt_stub_size (htab, stub_entry, off);
11265 if (stub_entry->h != NULL
11266 && (stub_entry->h == htab->tls_get_addr_fd
11267 || stub_entry->h == htab->tls_get_addr)
11268 && htab->params->tls_get_addr_opt
11269 && (ALWAYS_EMIT_R2SAVE
11270 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11271 stub_entry->group->tls_get_addr_opt_bctrl
11272 = stub_entry->group->stub_sec->size + size - 5 * 4;
11274 if (htab->params->plt_stub_align)
11275 size += plt_stub_pad (htab, stub_entry, off);
11276 if (info->emitrelocations)
11278 stub_entry->group->stub_sec->reloc_count
11279 += ((PPC_HA (off) != 0)
11281 ? 2 + (htab->params->plt_static_chain
11282 && PPC_HA (off + 16) == PPC_HA (off))
11284 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11289 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11292 bfd_vma local_off = 0;
11294 off = (stub_entry->target_value
11295 + stub_entry->target_section->output_offset
11296 + stub_entry->target_section->output_section->vma);
11297 off -= (stub_entry->group->stub_sec->size
11298 + stub_entry->group->stub_sec->output_offset
11299 + stub_entry->group->stub_sec->output_section->vma);
11301 /* Reset the stub type from the plt variant in case we now
11302 can reach with a shorter stub. */
11303 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11304 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11307 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11309 r2off = get_r2off (info, stub_entry);
11310 if (r2off == (bfd_vma) -1)
11312 htab->stub_error = TRUE;
11316 if (PPC_HA (r2off) != 0)
11318 if (PPC_LO (r2off) != 0)
11323 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11325 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11326 Do the same for -R objects without function descriptors. */
11327 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11328 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11330 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11332 struct ppc_branch_hash_entry *br_entry;
11334 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11335 stub_entry->root.string + 9,
11337 if (br_entry == NULL)
11339 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11340 stub_entry->root.string);
11341 htab->stub_error = TRUE;
11345 if (br_entry->iter != htab->stub_iteration)
11347 br_entry->iter = htab->stub_iteration;
11348 br_entry->offset = htab->brlt->size;
11349 htab->brlt->size += 8;
11351 if (htab->relbrlt != NULL)
11352 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11353 else if (info->emitrelocations)
11355 htab->brlt->reloc_count += 1;
11356 htab->brlt->flags |= SEC_RELOC;
11360 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11361 off = (br_entry->offset
11362 + htab->brlt->output_offset
11363 + htab->brlt->output_section->vma
11364 - elf_gp (info->output_bfd)
11365 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11367 if (info->emitrelocations)
11369 stub_entry->group->stub_sec->reloc_count
11370 += 1 + (PPC_HA (off) != 0);
11371 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11374 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11377 if (PPC_HA (off) != 0)
11383 if (PPC_HA (off) != 0)
11386 if (PPC_HA (r2off) != 0)
11388 if (PPC_LO (r2off) != 0)
11392 else if (info->emitrelocations)
11394 stub_entry->group->stub_sec->reloc_count += 1;
11395 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11399 stub_entry->group->stub_sec->size += size;
11403 /* Set up various things so that we can make a list of input sections
11404 for each output section included in the link. Returns -1 on error,
11405 0 when no stubs will be needed, and 1 on success. */
11408 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11412 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11417 htab->sec_info_arr_size = bfd_get_next_section_id ();
11418 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11419 htab->sec_info = bfd_zmalloc (amt);
11420 if (htab->sec_info == NULL)
11423 /* Set toc_off for com, und, abs and ind sections. */
11424 for (id = 0; id < 3; id++)
11425 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11430 /* Set up for first pass at multitoc partitioning. */
11433 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11435 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11437 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11438 htab->toc_bfd = NULL;
11439 htab->toc_first_sec = NULL;
11442 /* The linker repeatedly calls this function for each TOC input section
11443 and linker generated GOT section. Group input bfds such that the toc
11444 within a group is less than 64k in size. */
11447 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11450 bfd_vma addr, off, limit;
11455 if (!htab->second_toc_pass)
11457 /* Keep track of the first .toc or .got section for this input bfd. */
11458 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11462 htab->toc_bfd = isec->owner;
11463 htab->toc_first_sec = isec;
11466 addr = isec->output_offset + isec->output_section->vma;
11467 off = addr - htab->toc_curr;
11468 limit = 0x80008000;
11469 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11471 if (off + isec->size > limit)
11473 addr = (htab->toc_first_sec->output_offset
11474 + htab->toc_first_sec->output_section->vma);
11475 htab->toc_curr = addr;
11476 htab->toc_curr &= -TOC_BASE_ALIGN;
11479 /* toc_curr is the base address of this toc group. Set elf_gp
11480 for the input section to be the offset relative to the
11481 output toc base plus 0x8000. Making the input elf_gp an
11482 offset allows us to move the toc as a whole without
11483 recalculating input elf_gp. */
11484 off = htab->toc_curr - elf_gp (info->output_bfd);
11485 off += TOC_BASE_OFF;
11487 /* Die if someone uses a linker script that doesn't keep input
11488 file .toc and .got together. */
11490 && elf_gp (isec->owner) != 0
11491 && elf_gp (isec->owner) != off)
11494 elf_gp (isec->owner) = off;
11498 /* During the second pass toc_first_sec points to the start of
11499 a toc group, and toc_curr is used to track the old elf_gp.
11500 We use toc_bfd to ensure we only look at each bfd once. */
11501 if (htab->toc_bfd == isec->owner)
11503 htab->toc_bfd = isec->owner;
11505 if (htab->toc_first_sec == NULL
11506 || htab->toc_curr != elf_gp (isec->owner))
11508 htab->toc_curr = elf_gp (isec->owner);
11509 htab->toc_first_sec = isec;
11511 addr = (htab->toc_first_sec->output_offset
11512 + htab->toc_first_sec->output_section->vma);
11513 off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF;
11514 elf_gp (isec->owner) = off;
11519 /* Called via elf_link_hash_traverse to merge GOT entries for global
11523 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11525 if (h->root.type == bfd_link_hash_indirect)
11528 merge_got_entries (&h->got.glist);
11533 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11537 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11539 struct got_entry *gent;
11541 if (h->root.type == bfd_link_hash_indirect)
11544 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11545 if (!gent->is_indirect)
11546 allocate_got (h, (struct bfd_link_info *) inf, gent);
11550 /* Called on the first multitoc pass after the last call to
11551 ppc64_elf_next_toc_section. This function removes duplicate GOT
11555 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11558 struct bfd *ibfd, *ibfd2;
11559 bfd_boolean done_something;
11561 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11563 if (!htab->do_multi_toc)
11566 /* Merge global sym got entries within a toc group. */
11567 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11569 /* And tlsld_got. */
11570 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11572 struct got_entry *ent, *ent2;
11574 if (!is_ppc64_elf (ibfd))
11577 ent = ppc64_tlsld_got (ibfd);
11578 if (!ent->is_indirect
11579 && ent->got.offset != (bfd_vma) -1)
11581 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11583 if (!is_ppc64_elf (ibfd2))
11586 ent2 = ppc64_tlsld_got (ibfd2);
11587 if (!ent2->is_indirect
11588 && ent2->got.offset != (bfd_vma) -1
11589 && elf_gp (ibfd2) == elf_gp (ibfd))
11591 ent2->is_indirect = TRUE;
11592 ent2->got.ent = ent;
11598 /* Zap sizes of got sections. */
11599 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11600 htab->elf.irelplt->size -= htab->got_reli_size;
11601 htab->got_reli_size = 0;
11603 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11605 asection *got, *relgot;
11607 if (!is_ppc64_elf (ibfd))
11610 got = ppc64_elf_tdata (ibfd)->got;
11613 got->rawsize = got->size;
11615 relgot = ppc64_elf_tdata (ibfd)->relgot;
11616 relgot->rawsize = relgot->size;
11621 /* Now reallocate the got, local syms first. We don't need to
11622 allocate section contents again since we never increase size. */
11623 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11625 struct got_entry **lgot_ents;
11626 struct got_entry **end_lgot_ents;
11627 struct plt_entry **local_plt;
11628 struct plt_entry **end_local_plt;
11629 unsigned char *lgot_masks;
11630 bfd_size_type locsymcount;
11631 Elf_Internal_Shdr *symtab_hdr;
11634 if (!is_ppc64_elf (ibfd))
11637 lgot_ents = elf_local_got_ents (ibfd);
11641 symtab_hdr = &elf_symtab_hdr (ibfd);
11642 locsymcount = symtab_hdr->sh_info;
11643 end_lgot_ents = lgot_ents + locsymcount;
11644 local_plt = (struct plt_entry **) end_lgot_ents;
11645 end_local_plt = local_plt + locsymcount;
11646 lgot_masks = (unsigned char *) end_local_plt;
11647 s = ppc64_elf_tdata (ibfd)->got;
11648 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11650 struct got_entry *ent;
11652 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11654 unsigned int ent_size = 8;
11655 unsigned int rel_size = sizeof (Elf64_External_Rela);
11657 ent->got.offset = s->size;
11658 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11663 s->size += ent_size;
11664 if ((*lgot_masks & PLT_IFUNC) != 0)
11666 htab->elf.irelplt->size += rel_size;
11667 htab->got_reli_size += rel_size;
11669 else if (bfd_link_pic (info))
11671 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11672 srel->size += rel_size;
11678 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11680 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11682 struct got_entry *ent;
11684 if (!is_ppc64_elf (ibfd))
11687 ent = ppc64_tlsld_got (ibfd);
11688 if (!ent->is_indirect
11689 && ent->got.offset != (bfd_vma) -1)
11691 asection *s = ppc64_elf_tdata (ibfd)->got;
11692 ent->got.offset = s->size;
11694 if (bfd_link_pic (info))
11696 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11697 srel->size += sizeof (Elf64_External_Rela);
11702 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11703 if (!done_something)
11704 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11708 if (!is_ppc64_elf (ibfd))
11711 got = ppc64_elf_tdata (ibfd)->got;
11714 done_something = got->rawsize != got->size;
11715 if (done_something)
11720 if (done_something)
11721 (*htab->params->layout_sections_again) ();
11723 /* Set up for second pass over toc sections to recalculate elf_gp
11724 on input sections. */
11725 htab->toc_bfd = NULL;
11726 htab->toc_first_sec = NULL;
11727 htab->second_toc_pass = TRUE;
11728 return done_something;
11731 /* Called after second pass of multitoc partitioning. */
11734 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11736 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11738 /* After the second pass, toc_curr tracks the TOC offset used
11739 for code sections below in ppc64_elf_next_input_section. */
11740 htab->toc_curr = TOC_BASE_OFF;
11743 /* No toc references were found in ISEC. If the code in ISEC makes no
11744 calls, then there's no need to use toc adjusting stubs when branching
11745 into ISEC. Actually, indirect calls from ISEC are OK as they will
11746 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11747 needed, and 2 if a cyclical call-graph was found but no other reason
11748 for a stub was detected. If called from the top level, a return of
11749 2 means the same as a return of 0. */
11752 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11756 /* Mark this section as checked. */
11757 isec->call_check_done = 1;
11759 /* We know none of our code bearing sections will need toc stubs. */
11760 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11763 if (isec->size == 0)
11766 if (isec->output_section == NULL)
11770 if (isec->reloc_count != 0)
11772 Elf_Internal_Rela *relstart, *rel;
11773 Elf_Internal_Sym *local_syms;
11774 struct ppc_link_hash_table *htab;
11776 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11777 info->keep_memory);
11778 if (relstart == NULL)
11781 /* Look for branches to outside of this section. */
11783 htab = ppc_hash_table (info);
11787 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11789 enum elf_ppc64_reloc_type r_type;
11790 unsigned long r_symndx;
11791 struct elf_link_hash_entry *h;
11792 struct ppc_link_hash_entry *eh;
11793 Elf_Internal_Sym *sym;
11795 struct _opd_sec_data *opd;
11799 r_type = ELF64_R_TYPE (rel->r_info);
11800 if (r_type != R_PPC64_REL24
11801 && r_type != R_PPC64_REL14
11802 && r_type != R_PPC64_REL14_BRTAKEN
11803 && r_type != R_PPC64_REL14_BRNTAKEN)
11806 r_symndx = ELF64_R_SYM (rel->r_info);
11807 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11814 /* Calls to dynamic lib functions go through a plt call stub
11816 eh = (struct ppc_link_hash_entry *) h;
11818 && (eh->elf.plt.plist != NULL
11820 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11826 if (sym_sec == NULL)
11827 /* Ignore other undefined symbols. */
11830 /* Assume branches to other sections not included in the
11831 link need stubs too, to cover -R and absolute syms. */
11832 if (sym_sec->output_section == NULL)
11839 sym_value = sym->st_value;
11842 if (h->root.type != bfd_link_hash_defined
11843 && h->root.type != bfd_link_hash_defweak)
11845 sym_value = h->root.u.def.value;
11847 sym_value += rel->r_addend;
11849 /* If this branch reloc uses an opd sym, find the code section. */
11850 opd = get_opd_info (sym_sec);
11853 if (h == NULL && opd->adjust != NULL)
11857 adjust = opd->adjust[OPD_NDX (sym_value)];
11859 /* Assume deleted functions won't ever be called. */
11861 sym_value += adjust;
11864 dest = opd_entry_value (sym_sec, sym_value,
11865 &sym_sec, NULL, FALSE);
11866 if (dest == (bfd_vma) -1)
11871 + sym_sec->output_offset
11872 + sym_sec->output_section->vma);
11874 /* Ignore branch to self. */
11875 if (sym_sec == isec)
11878 /* If the called function uses the toc, we need a stub. */
11879 if (sym_sec->has_toc_reloc
11880 || sym_sec->makes_toc_func_call)
11886 /* Assume any branch that needs a long branch stub might in fact
11887 need a plt_branch stub. A plt_branch stub uses r2. */
11888 else if (dest - (isec->output_offset
11889 + isec->output_section->vma
11890 + rel->r_offset) + (1 << 25)
11891 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11899 /* If calling back to a section in the process of being
11900 tested, we can't say for sure that no toc adjusting stubs
11901 are needed, so don't return zero. */
11902 else if (sym_sec->call_check_in_progress)
11905 /* Branches to another section that itself doesn't have any TOC
11906 references are OK. Recursively call ourselves to check. */
11907 else if (!sym_sec->call_check_done)
11911 /* Mark current section as indeterminate, so that other
11912 sections that call back to current won't be marked as
11914 isec->call_check_in_progress = 1;
11915 recur = toc_adjusting_stub_needed (info, sym_sec);
11916 isec->call_check_in_progress = 0;
11927 if (local_syms != NULL
11928 && (elf_symtab_hdr (isec->owner).contents
11929 != (unsigned char *) local_syms))
11931 if (elf_section_data (isec)->relocs != relstart)
11936 && isec->map_head.s != NULL
11937 && (strcmp (isec->output_section->name, ".init") == 0
11938 || strcmp (isec->output_section->name, ".fini") == 0))
11940 if (isec->map_head.s->has_toc_reloc
11941 || isec->map_head.s->makes_toc_func_call)
11943 else if (!isec->map_head.s->call_check_done)
11946 isec->call_check_in_progress = 1;
11947 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11948 isec->call_check_in_progress = 0;
11955 isec->makes_toc_func_call = 1;
11960 /* The linker repeatedly calls this function for each input section,
11961 in the order that input sections are linked into output sections.
11962 Build lists of input sections to determine groupings between which
11963 we may insert linker stubs. */
11966 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11968 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11973 if ((isec->output_section->flags & SEC_CODE) != 0
11974 && isec->output_section->id < htab->sec_info_arr_size)
11976 /* This happens to make the list in reverse order,
11977 which is what we want. */
11978 htab->sec_info[isec->id].u.list
11979 = htab->sec_info[isec->output_section->id].u.list;
11980 htab->sec_info[isec->output_section->id].u.list = isec;
11983 if (htab->multi_toc_needed)
11985 /* Analyse sections that aren't already flagged as needing a
11986 valid toc pointer. Exclude .fixup for the linux kernel.
11987 .fixup contains branches, but only back to the function that
11988 hit an exception. */
11989 if (!(isec->has_toc_reloc
11990 || (isec->flags & SEC_CODE) == 0
11991 || strcmp (isec->name, ".fixup") == 0
11992 || isec->call_check_done))
11994 if (toc_adjusting_stub_needed (info, isec) < 0)
11997 /* Make all sections use the TOC assigned for this object file.
11998 This will be wrong for pasted sections; We fix that in
11999 check_pasted_section(). */
12000 if (elf_gp (isec->owner) != 0)
12001 htab->toc_curr = elf_gp (isec->owner);
12004 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12008 /* Check that all .init and .fini sections use the same toc, if they
12009 have toc relocs. */
12012 check_pasted_section (struct bfd_link_info *info, const char *name)
12014 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12018 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12019 bfd_vma toc_off = 0;
12022 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12023 if (i->has_toc_reloc)
12026 toc_off = htab->sec_info[i->id].toc_off;
12027 else if (toc_off != htab->sec_info[i->id].toc_off)
12032 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12033 if (i->makes_toc_func_call)
12035 toc_off = htab->sec_info[i->id].toc_off;
12039 /* Make sure the whole pasted function uses the same toc offset. */
12041 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12042 htab->sec_info[i->id].toc_off = toc_off;
12048 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12050 return (check_pasted_section (info, ".init")
12051 & check_pasted_section (info, ".fini"));
12054 /* See whether we can group stub sections together. Grouping stub
12055 sections may result in fewer stubs. More importantly, we need to
12056 put all .init* and .fini* stubs at the beginning of the .init or
12057 .fini output sections respectively, because glibc splits the
12058 _init and _fini functions into multiple parts. Putting a stub in
12059 the middle of a function is not a good idea. */
12062 group_sections (struct bfd_link_info *info,
12063 bfd_size_type stub_group_size,
12064 bfd_boolean stubs_always_before_branch)
12066 struct ppc_link_hash_table *htab;
12068 bfd_boolean suppress_size_errors;
12070 htab = ppc_hash_table (info);
12074 suppress_size_errors = FALSE;
12075 if (stub_group_size == 1)
12077 /* Default values. */
12078 if (stubs_always_before_branch)
12079 stub_group_size = 0x1e00000;
12081 stub_group_size = 0x1c00000;
12082 suppress_size_errors = TRUE;
12085 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12089 if (osec->id >= htab->sec_info_arr_size)
12092 tail = htab->sec_info[osec->id].u.list;
12093 while (tail != NULL)
12097 bfd_size_type total;
12098 bfd_boolean big_sec;
12100 struct map_stub *group;
12101 bfd_size_type group_size;
12104 total = tail->size;
12105 group_size = (ppc64_elf_section_data (tail) != NULL
12106 && ppc64_elf_section_data (tail)->has_14bit_branch
12107 ? stub_group_size >> 10 : stub_group_size);
12109 big_sec = total > group_size;
12110 if (big_sec && !suppress_size_errors)
12111 /* xgettext:c-format */
12112 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12113 tail->owner, tail);
12114 curr_toc = htab->sec_info[tail->id].toc_off;
12116 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12117 && ((total += curr->output_offset - prev->output_offset)
12118 < (ppc64_elf_section_data (prev) != NULL
12119 && ppc64_elf_section_data (prev)->has_14bit_branch
12120 ? (group_size = stub_group_size >> 10) : group_size))
12121 && htab->sec_info[prev->id].toc_off == curr_toc)
12124 /* OK, the size from the start of CURR to the end is less
12125 than group_size and thus can be handled by one stub
12126 section. (or the tail section is itself larger than
12127 group_size, in which case we may be toast.) We should
12128 really be keeping track of the total size of stubs added
12129 here, as stubs contribute to the final output section
12130 size. That's a little tricky, and this way will only
12131 break if stubs added make the total size more than 2^25,
12132 ie. for the default stub_group_size, if stubs total more
12133 than 2097152 bytes, or nearly 75000 plt call stubs. */
12134 group = bfd_alloc (curr->owner, sizeof (*group));
12137 group->link_sec = curr;
12138 group->stub_sec = NULL;
12139 group->needs_save_res = 0;
12140 group->tls_get_addr_opt_bctrl = -1u;
12141 group->next = htab->group;
12142 htab->group = group;
12145 prev = htab->sec_info[tail->id].u.list;
12146 /* Set up this stub group. */
12147 htab->sec_info[tail->id].u.group = group;
12149 while (tail != curr && (tail = prev) != NULL);
12151 /* But wait, there's more! Input sections up to group_size
12152 bytes before the stub section can be handled by it too.
12153 Don't do this if we have a really large section after the
12154 stubs, as adding more stubs increases the chance that
12155 branches may not reach into the stub section. */
12156 if (!stubs_always_before_branch && !big_sec)
12159 while (prev != NULL
12160 && ((total += tail->output_offset - prev->output_offset)
12161 < (ppc64_elf_section_data (prev) != NULL
12162 && ppc64_elf_section_data (prev)->has_14bit_branch
12163 ? (group_size = stub_group_size >> 10) : group_size))
12164 && htab->sec_info[prev->id].toc_off == curr_toc)
12167 prev = htab->sec_info[tail->id].u.list;
12168 htab->sec_info[tail->id].u.group = group;
12177 static const unsigned char glink_eh_frame_cie[] =
12179 0, 0, 0, 16, /* length. */
12180 0, 0, 0, 0, /* id. */
12181 1, /* CIE version. */
12182 'z', 'R', 0, /* Augmentation string. */
12183 4, /* Code alignment. */
12184 0x78, /* Data alignment. */
12186 1, /* Augmentation size. */
12187 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12188 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12192 stub_eh_frame_size (struct map_stub *group, size_t align)
12194 size_t this_size = 17;
12195 if (group->tls_get_addr_opt_bctrl != -1u)
12197 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12200 else if (to_bctrl < 256)
12202 else if (to_bctrl < 65536)
12208 this_size = (this_size + align - 1) & -align;
12212 /* Stripping output sections is normally done before dynamic section
12213 symbols have been allocated. This function is called later, and
12214 handles cases like htab->brlt which is mapped to its own output
12218 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12220 if (isec->size == 0
12221 && isec->output_section->size == 0
12222 && !(isec->output_section->flags & SEC_KEEP)
12223 && !bfd_section_removed_from_list (info->output_bfd,
12224 isec->output_section)
12225 && elf_section_data (isec->output_section)->dynindx == 0)
12227 isec->output_section->flags |= SEC_EXCLUDE;
12228 bfd_section_list_remove (info->output_bfd, isec->output_section);
12229 info->output_bfd->section_count--;
12233 /* Determine and set the size of the stub section for a final link.
12235 The basic idea here is to examine all the relocations looking for
12236 PC-relative calls to a target that is unreachable with a "bl"
12240 ppc64_elf_size_stubs (struct bfd_link_info *info)
12242 bfd_size_type stub_group_size;
12243 bfd_boolean stubs_always_before_branch;
12244 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12249 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12250 htab->params->plt_thread_safe = 1;
12251 if (!htab->opd_abi)
12252 htab->params->plt_thread_safe = 0;
12253 else if (htab->params->plt_thread_safe == -1)
12255 static const char *const thread_starter[] =
12259 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12261 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12262 "mq_notify", "create_timer",
12267 "GOMP_parallel_start",
12268 "GOMP_parallel_loop_static",
12269 "GOMP_parallel_loop_static_start",
12270 "GOMP_parallel_loop_dynamic",
12271 "GOMP_parallel_loop_dynamic_start",
12272 "GOMP_parallel_loop_guided",
12273 "GOMP_parallel_loop_guided_start",
12274 "GOMP_parallel_loop_runtime",
12275 "GOMP_parallel_loop_runtime_start",
12276 "GOMP_parallel_sections",
12277 "GOMP_parallel_sections_start",
12283 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12285 struct elf_link_hash_entry *h;
12286 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12287 FALSE, FALSE, TRUE);
12288 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12289 if (htab->params->plt_thread_safe)
12293 stubs_always_before_branch = htab->params->group_size < 0;
12294 if (htab->params->group_size < 0)
12295 stub_group_size = -htab->params->group_size;
12297 stub_group_size = htab->params->group_size;
12299 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12302 #define STUB_SHRINK_ITER 20
12303 /* Loop until no stubs added. After iteration 20 of this loop we may
12304 exit on a stub section shrinking. This is to break out of a
12305 pathological case where adding stubs on one iteration decreases
12306 section gaps (perhaps due to alignment), which then requires
12307 fewer or smaller stubs on the next iteration. */
12312 unsigned int bfd_indx;
12313 struct map_stub *group;
12315 htab->stub_iteration += 1;
12317 for (input_bfd = info->input_bfds, bfd_indx = 0;
12319 input_bfd = input_bfd->link.next, bfd_indx++)
12321 Elf_Internal_Shdr *symtab_hdr;
12323 Elf_Internal_Sym *local_syms = NULL;
12325 if (!is_ppc64_elf (input_bfd))
12328 /* We'll need the symbol table in a second. */
12329 symtab_hdr = &elf_symtab_hdr (input_bfd);
12330 if (symtab_hdr->sh_info == 0)
12333 /* Walk over each section attached to the input bfd. */
12334 for (section = input_bfd->sections;
12336 section = section->next)
12338 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12340 /* If there aren't any relocs, then there's nothing more
12342 if ((section->flags & SEC_RELOC) == 0
12343 || (section->flags & SEC_ALLOC) == 0
12344 || (section->flags & SEC_LOAD) == 0
12345 || (section->flags & SEC_CODE) == 0
12346 || section->reloc_count == 0)
12349 /* If this section is a link-once section that will be
12350 discarded, then don't create any stubs. */
12351 if (section->output_section == NULL
12352 || section->output_section->owner != info->output_bfd)
12355 /* Get the relocs. */
12357 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12358 info->keep_memory);
12359 if (internal_relocs == NULL)
12360 goto error_ret_free_local;
12362 /* Now examine each relocation. */
12363 irela = internal_relocs;
12364 irelaend = irela + section->reloc_count;
12365 for (; irela < irelaend; irela++)
12367 enum elf_ppc64_reloc_type r_type;
12368 unsigned int r_indx;
12369 enum ppc_stub_type stub_type;
12370 struct ppc_stub_hash_entry *stub_entry;
12371 asection *sym_sec, *code_sec;
12372 bfd_vma sym_value, code_value;
12373 bfd_vma destination;
12374 unsigned long local_off;
12375 bfd_boolean ok_dest;
12376 struct ppc_link_hash_entry *hash;
12377 struct ppc_link_hash_entry *fdh;
12378 struct elf_link_hash_entry *h;
12379 Elf_Internal_Sym *sym;
12381 const asection *id_sec;
12382 struct _opd_sec_data *opd;
12383 struct plt_entry *plt_ent;
12385 r_type = ELF64_R_TYPE (irela->r_info);
12386 r_indx = ELF64_R_SYM (irela->r_info);
12388 if (r_type >= R_PPC64_max)
12390 bfd_set_error (bfd_error_bad_value);
12391 goto error_ret_free_internal;
12394 /* Only look for stubs on branch instructions. */
12395 if (r_type != R_PPC64_REL24
12396 && r_type != R_PPC64_REL14
12397 && r_type != R_PPC64_REL14_BRTAKEN
12398 && r_type != R_PPC64_REL14_BRNTAKEN)
12401 /* Now determine the call target, its name, value,
12403 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12404 r_indx, input_bfd))
12405 goto error_ret_free_internal;
12406 hash = (struct ppc_link_hash_entry *) h;
12413 sym_value = sym->st_value;
12414 if (sym_sec != NULL
12415 && sym_sec->output_section != NULL)
12418 else if (hash->elf.root.type == bfd_link_hash_defined
12419 || hash->elf.root.type == bfd_link_hash_defweak)
12421 sym_value = hash->elf.root.u.def.value;
12422 if (sym_sec->output_section != NULL)
12425 else if (hash->elf.root.type == bfd_link_hash_undefweak
12426 || hash->elf.root.type == bfd_link_hash_undefined)
12428 /* Recognise an old ABI func code entry sym, and
12429 use the func descriptor sym instead if it is
12431 if (hash->elf.root.root.string[0] == '.'
12432 && hash->oh != NULL)
12434 fdh = ppc_follow_link (hash->oh);
12435 if (fdh->elf.root.type == bfd_link_hash_defined
12436 || fdh->elf.root.type == bfd_link_hash_defweak)
12438 sym_sec = fdh->elf.root.u.def.section;
12439 sym_value = fdh->elf.root.u.def.value;
12440 if (sym_sec->output_section != NULL)
12449 bfd_set_error (bfd_error_bad_value);
12450 goto error_ret_free_internal;
12457 sym_value += irela->r_addend;
12458 destination = (sym_value
12459 + sym_sec->output_offset
12460 + sym_sec->output_section->vma);
12461 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12466 code_sec = sym_sec;
12467 code_value = sym_value;
12468 opd = get_opd_info (sym_sec);
12473 if (hash == NULL && opd->adjust != NULL)
12475 long adjust = opd->adjust[OPD_NDX (sym_value)];
12478 code_value += adjust;
12479 sym_value += adjust;
12481 dest = opd_entry_value (sym_sec, sym_value,
12482 &code_sec, &code_value, FALSE);
12483 if (dest != (bfd_vma) -1)
12485 destination = dest;
12488 /* Fixup old ABI sym to point at code
12490 hash->elf.root.type = bfd_link_hash_defweak;
12491 hash->elf.root.u.def.section = code_sec;
12492 hash->elf.root.u.def.value = code_value;
12497 /* Determine what (if any) linker stub is needed. */
12499 stub_type = ppc_type_of_stub (section, irela, &hash,
12500 &plt_ent, destination,
12503 if (stub_type != ppc_stub_plt_call)
12505 /* Check whether we need a TOC adjusting stub.
12506 Since the linker pastes together pieces from
12507 different object files when creating the
12508 _init and _fini functions, it may be that a
12509 call to what looks like a local sym is in
12510 fact a call needing a TOC adjustment. */
12511 if (code_sec != NULL
12512 && code_sec->output_section != NULL
12513 && (htab->sec_info[code_sec->id].toc_off
12514 != htab->sec_info[section->id].toc_off)
12515 && (code_sec->has_toc_reloc
12516 || code_sec->makes_toc_func_call))
12517 stub_type = ppc_stub_long_branch_r2off;
12520 if (stub_type == ppc_stub_none)
12523 /* __tls_get_addr calls might be eliminated. */
12524 if (stub_type != ppc_stub_plt_call
12526 && (hash == htab->tls_get_addr
12527 || hash == htab->tls_get_addr_fd)
12528 && section->has_tls_reloc
12529 && irela != internal_relocs)
12531 /* Get tls info. */
12532 unsigned char *tls_mask;
12534 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12535 irela - 1, input_bfd))
12536 goto error_ret_free_internal;
12537 if (*tls_mask != 0)
12541 if (stub_type == ppc_stub_plt_call)
12544 && htab->params->plt_localentry0 != 0
12545 && is_elfv2_localentry0 (&hash->elf))
12546 htab->has_plt_localentry0 = 1;
12547 else if (irela + 1 < irelaend
12548 && irela[1].r_offset == irela->r_offset + 4
12549 && (ELF64_R_TYPE (irela[1].r_info)
12550 == R_PPC64_TOCSAVE))
12552 if (!tocsave_find (htab, INSERT,
12553 &local_syms, irela + 1, input_bfd))
12554 goto error_ret_free_internal;
12557 stub_type = ppc_stub_plt_call_r2save;
12560 /* Support for grouping stub sections. */
12561 id_sec = htab->sec_info[section->id].u.group->link_sec;
12563 /* Get the name of this stub. */
12564 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12566 goto error_ret_free_internal;
12568 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12569 stub_name, FALSE, FALSE);
12570 if (stub_entry != NULL)
12572 /* The proper stub has already been created. */
12574 if (stub_type == ppc_stub_plt_call_r2save)
12575 stub_entry->stub_type = stub_type;
12579 stub_entry = ppc_add_stub (stub_name, section, info);
12580 if (stub_entry == NULL)
12583 error_ret_free_internal:
12584 if (elf_section_data (section)->relocs == NULL)
12585 free (internal_relocs);
12586 error_ret_free_local:
12587 if (local_syms != NULL
12588 && (symtab_hdr->contents
12589 != (unsigned char *) local_syms))
12594 stub_entry->stub_type = stub_type;
12595 if (stub_type != ppc_stub_plt_call
12596 && stub_type != ppc_stub_plt_call_r2save)
12598 stub_entry->target_value = code_value;
12599 stub_entry->target_section = code_sec;
12603 stub_entry->target_value = sym_value;
12604 stub_entry->target_section = sym_sec;
12606 stub_entry->h = hash;
12607 stub_entry->plt_ent = plt_ent;
12608 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12610 if (stub_entry->h != NULL)
12611 htab->stub_globals += 1;
12614 /* We're done with the internal relocs, free them. */
12615 if (elf_section_data (section)->relocs != internal_relocs)
12616 free (internal_relocs);
12619 if (local_syms != NULL
12620 && symtab_hdr->contents != (unsigned char *) local_syms)
12622 if (!info->keep_memory)
12625 symtab_hdr->contents = (unsigned char *) local_syms;
12629 /* We may have added some stubs. Find out the new size of the
12631 for (group = htab->group; group != NULL; group = group->next)
12632 if (group->stub_sec != NULL)
12634 asection *stub_sec = group->stub_sec;
12636 if (htab->stub_iteration <= STUB_SHRINK_ITER
12637 || stub_sec->rawsize < stub_sec->size)
12638 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12639 stub_sec->rawsize = stub_sec->size;
12640 stub_sec->size = 0;
12641 stub_sec->reloc_count = 0;
12642 stub_sec->flags &= ~SEC_RELOC;
12645 htab->brlt->size = 0;
12646 htab->brlt->reloc_count = 0;
12647 htab->brlt->flags &= ~SEC_RELOC;
12648 if (htab->relbrlt != NULL)
12649 htab->relbrlt->size = 0;
12651 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12653 for (group = htab->group; group != NULL; group = group->next)
12654 if (group->needs_save_res)
12655 group->stub_sec->size += htab->sfpr->size;
12657 if (info->emitrelocations
12658 && htab->glink != NULL && htab->glink->size != 0)
12660 htab->glink->reloc_count = 1;
12661 htab->glink->flags |= SEC_RELOC;
12664 if (htab->glink_eh_frame != NULL
12665 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12666 && htab->glink_eh_frame->output_section->size > 8)
12668 size_t size = 0, align = 4;
12670 for (group = htab->group; group != NULL; group = group->next)
12671 if (group->stub_sec != NULL)
12672 size += stub_eh_frame_size (group, align);
12673 if (htab->glink != NULL && htab->glink->size != 0)
12674 size += (24 + align - 1) & -align;
12676 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12677 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12678 size = (size + align - 1) & -align;
12679 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12680 htab->glink_eh_frame->size = size;
12683 if (htab->params->plt_stub_align != 0)
12684 for (group = htab->group; group != NULL; group = group->next)
12685 if (group->stub_sec != NULL)
12686 group->stub_sec->size = ((group->stub_sec->size
12687 + (1 << htab->params->plt_stub_align) - 1)
12688 & -(1 << htab->params->plt_stub_align));
12690 for (group = htab->group; group != NULL; group = group->next)
12691 if (group->stub_sec != NULL
12692 && group->stub_sec->rawsize != group->stub_sec->size
12693 && (htab->stub_iteration <= STUB_SHRINK_ITER
12694 || group->stub_sec->rawsize < group->stub_sec->size))
12698 && (htab->glink_eh_frame == NULL
12699 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12702 /* Ask the linker to do its stuff. */
12703 (*htab->params->layout_sections_again) ();
12706 if (htab->glink_eh_frame != NULL
12707 && htab->glink_eh_frame->size != 0)
12710 bfd_byte *p, *last_fde;
12711 size_t last_fde_len, size, align, pad;
12712 struct map_stub *group;
12714 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12717 htab->glink_eh_frame->contents = p;
12721 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12722 /* CIE length (rewrite in case little-endian). */
12723 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12724 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12725 p += last_fde_len + 4;
12727 for (group = htab->group; group != NULL; group = group->next)
12728 if (group->stub_sec != NULL)
12731 last_fde_len = stub_eh_frame_size (group, align) - 4;
12733 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12736 val = p - htab->glink_eh_frame->contents;
12737 bfd_put_32 (htab->elf.dynobj, val, p);
12739 /* Offset to stub section, written later. */
12741 /* stub section size. */
12742 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
12744 /* Augmentation. */
12746 if (group->tls_get_addr_opt_bctrl != -1u)
12748 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12750 /* This FDE needs more than just the default.
12751 Describe __tls_get_addr_opt stub LR. */
12753 *p++ = DW_CFA_advance_loc + to_bctrl;
12754 else if (to_bctrl < 256)
12756 *p++ = DW_CFA_advance_loc1;
12759 else if (to_bctrl < 65536)
12761 *p++ = DW_CFA_advance_loc2;
12762 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
12767 *p++ = DW_CFA_advance_loc4;
12768 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
12771 *p++ = DW_CFA_offset_extended_sf;
12773 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
12774 *p++ = DW_CFA_advance_loc + 4;
12775 *p++ = DW_CFA_restore_extended;
12779 p = last_fde + last_fde_len + 4;
12781 if (htab->glink != NULL && htab->glink->size != 0)
12784 last_fde_len = ((24 + align - 1) & -align) - 4;
12786 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12789 val = p - htab->glink_eh_frame->contents;
12790 bfd_put_32 (htab->elf.dynobj, val, p);
12792 /* Offset to .glink, written later. */
12795 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12797 /* Augmentation. */
12800 *p++ = DW_CFA_advance_loc + 1;
12801 *p++ = DW_CFA_register;
12803 *p++ = htab->opd_abi ? 12 : 0;
12804 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
12805 *p++ = DW_CFA_restore_extended;
12807 p += ((24 + align - 1) & -align) - 24;
12809 /* Subsume any padding into the last FDE if user .eh_frame
12810 sections are aligned more than glink_eh_frame. Otherwise any
12811 zero padding will be seen as a terminator. */
12812 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12813 size = p - htab->glink_eh_frame->contents;
12814 pad = ((size + align - 1) & -align) - size;
12815 htab->glink_eh_frame->size = size + pad;
12816 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12819 maybe_strip_output (info, htab->brlt);
12820 if (htab->glink_eh_frame != NULL)
12821 maybe_strip_output (info, htab->glink_eh_frame);
12826 /* Called after we have determined section placement. If sections
12827 move, we'll be called again. Provide a value for TOCstart. */
12830 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12833 bfd_vma TOCstart, adjust;
12837 struct elf_link_hash_entry *h;
12838 struct elf_link_hash_table *htab = elf_hash_table (info);
12840 if (is_elf_hash_table (htab)
12841 && htab->hgot != NULL)
12845 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12846 if (is_elf_hash_table (htab))
12850 && h->root.type == bfd_link_hash_defined
12851 && !h->root.linker_def
12852 && (!is_elf_hash_table (htab)
12853 || h->def_regular))
12855 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12856 + h->root.u.def.section->output_offset
12857 + h->root.u.def.section->output_section->vma);
12858 _bfd_set_gp_value (obfd, TOCstart);
12863 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12864 order. The TOC starts where the first of these sections starts. */
12865 s = bfd_get_section_by_name (obfd, ".got");
12866 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12867 s = bfd_get_section_by_name (obfd, ".toc");
12868 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12869 s = bfd_get_section_by_name (obfd, ".tocbss");
12870 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12871 s = bfd_get_section_by_name (obfd, ".plt");
12872 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12874 /* This may happen for
12875 o references to TOC base (SYM@toc / TOC[tc0]) without a
12877 o bad linker script
12878 o --gc-sections and empty TOC sections
12880 FIXME: Warn user? */
12882 /* Look for a likely section. We probably won't even be
12884 for (s = obfd->sections; s != NULL; s = s->next)
12885 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12887 == (SEC_ALLOC | SEC_SMALL_DATA))
12890 for (s = obfd->sections; s != NULL; s = s->next)
12891 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12892 == (SEC_ALLOC | SEC_SMALL_DATA))
12895 for (s = obfd->sections; s != NULL; s = s->next)
12896 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12900 for (s = obfd->sections; s != NULL; s = s->next)
12901 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12907 TOCstart = s->output_section->vma + s->output_offset;
12909 /* Force alignment. */
12910 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12911 TOCstart -= adjust;
12912 _bfd_set_gp_value (obfd, TOCstart);
12914 if (info != NULL && s != NULL)
12916 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12920 if (htab->elf.hgot != NULL)
12922 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12923 htab->elf.hgot->root.u.def.section = s;
12928 struct bfd_link_hash_entry *bh = NULL;
12929 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12930 s, TOC_BASE_OFF - adjust,
12931 NULL, FALSE, FALSE, &bh);
12937 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12938 write out any global entry stubs. */
12941 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12943 struct bfd_link_info *info;
12944 struct ppc_link_hash_table *htab;
12945 struct plt_entry *pent;
12948 if (h->root.type == bfd_link_hash_indirect)
12951 if (!h->pointer_equality_needed)
12954 if (h->def_regular)
12958 htab = ppc_hash_table (info);
12963 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12964 if (pent->plt.offset != (bfd_vma) -1
12965 && pent->addend == 0)
12971 p = s->contents + h->root.u.def.value;
12972 plt = htab->elf.splt;
12973 if (!htab->elf.dynamic_sections_created
12974 || h->dynindx == -1)
12975 plt = htab->elf.iplt;
12976 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12977 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12979 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12981 info->callbacks->einfo
12982 (_("%P: linkage table error against `%T'\n"),
12983 h->root.root.string);
12984 bfd_set_error (bfd_error_bad_value);
12985 htab->stub_error = TRUE;
12988 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12989 if (htab->params->emit_stub_syms)
12991 size_t len = strlen (h->root.root.string);
12992 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12997 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12998 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13001 if (h->root.type == bfd_link_hash_new)
13003 h->root.type = bfd_link_hash_defined;
13004 h->root.u.def.section = s;
13005 h->root.u.def.value = p - s->contents;
13006 h->ref_regular = 1;
13007 h->def_regular = 1;
13008 h->ref_regular_nonweak = 1;
13009 h->forced_local = 1;
13011 h->root.linker_def = 1;
13015 if (PPC_HA (off) != 0)
13017 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13020 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13022 bfd_put_32 (s->owner, MTCTR_R12, p);
13024 bfd_put_32 (s->owner, BCTR, p);
13030 /* Build all the stubs associated with the current output file.
13031 The stubs are kept in a hash table attached to the main linker
13032 hash table. This function is called via gldelf64ppc_finish. */
13035 ppc64_elf_build_stubs (struct bfd_link_info *info,
13038 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13039 struct map_stub *group;
13040 asection *stub_sec;
13042 int stub_sec_count = 0;
13047 /* Allocate memory to hold the linker stubs. */
13048 for (group = htab->group; group != NULL; group = group->next)
13049 if ((stub_sec = group->stub_sec) != NULL
13050 && stub_sec->size != 0)
13052 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13053 if (stub_sec->contents == NULL)
13055 stub_sec->size = 0;
13058 if (htab->glink != NULL && htab->glink->size != 0)
13063 /* Build the .glink plt call stub. */
13064 if (htab->params->emit_stub_syms)
13066 struct elf_link_hash_entry *h;
13067 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13068 TRUE, FALSE, FALSE);
13071 if (h->root.type == bfd_link_hash_new)
13073 h->root.type = bfd_link_hash_defined;
13074 h->root.u.def.section = htab->glink;
13075 h->root.u.def.value = 8;
13076 h->ref_regular = 1;
13077 h->def_regular = 1;
13078 h->ref_regular_nonweak = 1;
13079 h->forced_local = 1;
13081 h->root.linker_def = 1;
13084 plt0 = (htab->elf.splt->output_section->vma
13085 + htab->elf.splt->output_offset
13087 if (info->emitrelocations)
13089 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13092 r->r_offset = (htab->glink->output_offset
13093 + htab->glink->output_section->vma);
13094 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13095 r->r_addend = plt0;
13097 p = htab->glink->contents;
13098 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13099 bfd_put_64 (htab->glink->owner, plt0, p);
13103 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13105 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13107 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13109 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13111 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13113 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13115 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13117 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13119 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13121 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13126 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13128 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13130 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13132 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13134 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13136 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13138 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13140 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13142 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13144 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13146 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13148 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13150 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13153 bfd_put_32 (htab->glink->owner, BCTR, p);
13155 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13157 bfd_put_32 (htab->glink->owner, NOP, p);
13161 /* Build the .glink lazy link call stubs. */
13163 while (p < htab->glink->contents + htab->glink->rawsize)
13169 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13174 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13176 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13181 bfd_put_32 (htab->glink->owner,
13182 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13187 /* Build .glink global entry stubs. */
13188 if (htab->glink->size > htab->glink->rawsize)
13189 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13192 if (htab->brlt != NULL && htab->brlt->size != 0)
13194 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13196 if (htab->brlt->contents == NULL)
13199 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13201 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13202 htab->relbrlt->size);
13203 if (htab->relbrlt->contents == NULL)
13207 /* Build the stubs as directed by the stub hash table. */
13208 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13210 for (group = htab->group; group != NULL; group = group->next)
13211 if (group->needs_save_res)
13213 stub_sec = group->stub_sec;
13214 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13216 if (htab->params->emit_stub_syms)
13220 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13221 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13224 stub_sec->size += htab->sfpr->size;
13227 if (htab->relbrlt != NULL)
13228 htab->relbrlt->reloc_count = 0;
13230 if (htab->params->plt_stub_align != 0)
13231 for (group = htab->group; group != NULL; group = group->next)
13232 if ((stub_sec = group->stub_sec) != NULL)
13233 stub_sec->size = ((stub_sec->size
13234 + (1 << htab->params->plt_stub_align) - 1)
13235 & -(1 << htab->params->plt_stub_align));
13237 for (group = htab->group; group != NULL; group = group->next)
13238 if ((stub_sec = group->stub_sec) != NULL)
13240 stub_sec_count += 1;
13241 if (stub_sec->rawsize != stub_sec->size
13242 && (htab->stub_iteration <= STUB_SHRINK_ITER
13243 || stub_sec->rawsize < stub_sec->size))
13249 htab->stub_error = TRUE;
13250 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13253 if (htab->stub_error)
13259 *stats = bfd_malloc (500);
13260 if (*stats == NULL)
13263 len = sprintf (*stats,
13264 ngettext ("linker stubs in %u group\n",
13265 "linker stubs in %u groups\n",
13268 sprintf (*stats + len, _(" branch %lu\n"
13269 " toc adjust %lu\n"
13270 " long branch %lu\n"
13271 " long toc adj %lu\n"
13273 " plt call toc %lu\n"
13274 " global entry %lu"),
13275 htab->stub_count[ppc_stub_long_branch - 1],
13276 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13277 htab->stub_count[ppc_stub_plt_branch - 1],
13278 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13279 htab->stub_count[ppc_stub_plt_call - 1],
13280 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13281 htab->stub_count[ppc_stub_global_entry - 1]);
13286 /* What to do when ld finds relocations against symbols defined in
13287 discarded sections. */
13289 static unsigned int
13290 ppc64_elf_action_discarded (asection *sec)
13292 if (strcmp (".opd", sec->name) == 0)
13295 if (strcmp (".toc", sec->name) == 0)
13298 if (strcmp (".toc1", sec->name) == 0)
13301 return _bfd_elf_default_action_discarded (sec);
13304 /* The RELOCATE_SECTION function is called by the ELF backend linker
13305 to handle the relocations for a section.
13307 The relocs are always passed as Rela structures; if the section
13308 actually uses Rel structures, the r_addend field will always be
13311 This function is responsible for adjust the section contents as
13312 necessary, and (if using Rela relocs and generating a
13313 relocatable output file) adjusting the reloc addend as
13316 This function does not have to worry about setting the reloc
13317 address or the reloc symbol index.
13319 LOCAL_SYMS is a pointer to the swapped in local symbols.
13321 LOCAL_SECTIONS is an array giving the section in the input file
13322 corresponding to the st_shndx field of each local symbol.
13324 The global hash table entry for the global symbols can be found
13325 via elf_sym_hashes (input_bfd).
13327 When generating relocatable output, this function must handle
13328 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13329 going to be the section symbol corresponding to the output
13330 section, which means that the addend must be adjusted
13334 ppc64_elf_relocate_section (bfd *output_bfd,
13335 struct bfd_link_info *info,
13337 asection *input_section,
13338 bfd_byte *contents,
13339 Elf_Internal_Rela *relocs,
13340 Elf_Internal_Sym *local_syms,
13341 asection **local_sections)
13343 struct ppc_link_hash_table *htab;
13344 Elf_Internal_Shdr *symtab_hdr;
13345 struct elf_link_hash_entry **sym_hashes;
13346 Elf_Internal_Rela *rel;
13347 Elf_Internal_Rela *wrel;
13348 Elf_Internal_Rela *relend;
13349 Elf_Internal_Rela outrel;
13351 struct got_entry **local_got_ents;
13353 bfd_boolean ret = TRUE;
13354 bfd_boolean is_opd;
13355 /* Assume 'at' branch hints. */
13356 bfd_boolean is_isa_v2 = TRUE;
13357 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13359 /* Initialize howto table if needed. */
13360 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13363 htab = ppc_hash_table (info);
13367 /* Don't relocate stub sections. */
13368 if (input_section->owner == htab->params->stub_bfd)
13371 BFD_ASSERT (is_ppc64_elf (input_bfd));
13373 local_got_ents = elf_local_got_ents (input_bfd);
13374 TOCstart = elf_gp (output_bfd);
13375 symtab_hdr = &elf_symtab_hdr (input_bfd);
13376 sym_hashes = elf_sym_hashes (input_bfd);
13377 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13379 rel = wrel = relocs;
13380 relend = relocs + input_section->reloc_count;
13381 for (; rel < relend; wrel++, rel++)
13383 enum elf_ppc64_reloc_type r_type;
13385 bfd_reloc_status_type r;
13386 Elf_Internal_Sym *sym;
13388 struct elf_link_hash_entry *h_elf;
13389 struct ppc_link_hash_entry *h;
13390 struct ppc_link_hash_entry *fdh;
13391 const char *sym_name;
13392 unsigned long r_symndx, toc_symndx;
13393 bfd_vma toc_addend;
13394 unsigned char tls_mask, tls_gd, tls_type;
13395 unsigned char sym_type;
13396 bfd_vma relocation;
13397 bfd_boolean unresolved_reloc;
13398 bfd_boolean warned;
13399 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13402 struct ppc_stub_hash_entry *stub_entry;
13403 bfd_vma max_br_offset;
13405 Elf_Internal_Rela orig_rel;
13406 reloc_howto_type *howto;
13407 struct reloc_howto_struct alt_howto;
13412 r_type = ELF64_R_TYPE (rel->r_info);
13413 r_symndx = ELF64_R_SYM (rel->r_info);
13415 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13416 symbol of the previous ADDR64 reloc. The symbol gives us the
13417 proper TOC base to use. */
13418 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13420 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13422 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13428 unresolved_reloc = FALSE;
13431 if (r_symndx < symtab_hdr->sh_info)
13433 /* It's a local symbol. */
13434 struct _opd_sec_data *opd;
13436 sym = local_syms + r_symndx;
13437 sec = local_sections[r_symndx];
13438 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13439 sym_type = ELF64_ST_TYPE (sym->st_info);
13440 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13441 opd = get_opd_info (sec);
13442 if (opd != NULL && opd->adjust != NULL)
13444 long adjust = opd->adjust[OPD_NDX (sym->st_value
13450 /* If this is a relocation against the opd section sym
13451 and we have edited .opd, adjust the reloc addend so
13452 that ld -r and ld --emit-relocs output is correct.
13453 If it is a reloc against some other .opd symbol,
13454 then the symbol value will be adjusted later. */
13455 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13456 rel->r_addend += adjust;
13458 relocation += adjust;
13464 bfd_boolean ignored;
13466 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13467 r_symndx, symtab_hdr, sym_hashes,
13468 h_elf, sec, relocation,
13469 unresolved_reloc, warned, ignored);
13470 sym_name = h_elf->root.root.string;
13471 sym_type = h_elf->type;
13473 && sec->owner == output_bfd
13474 && strcmp (sec->name, ".opd") == 0)
13476 /* This is a symbol defined in a linker script. All
13477 such are defined in output sections, even those
13478 defined by simple assignment from a symbol defined in
13479 an input section. Transfer the symbol to an
13480 appropriate input .opd section, so that a branch to
13481 this symbol will be mapped to the location specified
13482 by the opd entry. */
13483 struct bfd_link_order *lo;
13484 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13485 if (lo->type == bfd_indirect_link_order)
13487 asection *isec = lo->u.indirect.section;
13488 if (h_elf->root.u.def.value >= isec->output_offset
13489 && h_elf->root.u.def.value < (isec->output_offset
13492 h_elf->root.u.def.value -= isec->output_offset;
13493 h_elf->root.u.def.section = isec;
13500 h = (struct ppc_link_hash_entry *) h_elf;
13502 if (sec != NULL && discarded_section (sec))
13504 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13505 input_bfd, input_section,
13506 contents + rel->r_offset);
13507 wrel->r_offset = rel->r_offset;
13509 wrel->r_addend = 0;
13511 /* For ld -r, remove relocations in debug sections against
13512 symbols defined in discarded sections. Not done for
13513 non-debug to preserve relocs in .eh_frame which the
13514 eh_frame editing code expects to be present. */
13515 if (bfd_link_relocatable (info)
13516 && (input_section->flags & SEC_DEBUGGING))
13522 if (bfd_link_relocatable (info))
13525 if (h != NULL && &h->elf == htab->elf.hgot)
13527 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13528 sec = bfd_abs_section_ptr;
13529 unresolved_reloc = FALSE;
13532 /* TLS optimizations. Replace instruction sequences and relocs
13533 based on information we collected in tls_optimize. We edit
13534 RELOCS so that --emit-relocs will output something sensible
13535 for the final instruction stream. */
13540 tls_mask = h->tls_mask;
13541 else if (local_got_ents != NULL)
13543 struct plt_entry **local_plt = (struct plt_entry **)
13544 (local_got_ents + symtab_hdr->sh_info);
13545 unsigned char *lgot_masks = (unsigned char *)
13546 (local_plt + symtab_hdr->sh_info);
13547 tls_mask = lgot_masks[r_symndx];
13550 && (r_type == R_PPC64_TLS
13551 || r_type == R_PPC64_TLSGD
13552 || r_type == R_PPC64_TLSLD))
13554 /* Check for toc tls entries. */
13555 unsigned char *toc_tls;
13557 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13558 &local_syms, rel, input_bfd))
13562 tls_mask = *toc_tls;
13565 /* Check that tls relocs are used with tls syms, and non-tls
13566 relocs are used with non-tls syms. */
13567 if (r_symndx != STN_UNDEF
13568 && r_type != R_PPC64_NONE
13570 || h->elf.root.type == bfd_link_hash_defined
13571 || h->elf.root.type == bfd_link_hash_defweak)
13572 && (IS_PPC64_TLS_RELOC (r_type)
13573 != (sym_type == STT_TLS
13574 || (sym_type == STT_SECTION
13575 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13578 && (r_type == R_PPC64_TLS
13579 || r_type == R_PPC64_TLSGD
13580 || r_type == R_PPC64_TLSLD))
13581 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13584 info->callbacks->einfo
13585 (!IS_PPC64_TLS_RELOC (r_type)
13586 /* xgettext:c-format */
13587 ? _("%H: %s used with TLS symbol `%T'\n")
13588 /* xgettext:c-format */
13589 : _("%H: %s used with non-TLS symbol `%T'\n"),
13590 input_bfd, input_section, rel->r_offset,
13591 ppc64_elf_howto_table[r_type]->name,
13595 /* Ensure reloc mapping code below stays sane. */
13596 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13597 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13598 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13599 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13600 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13601 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13602 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13603 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13604 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13605 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13613 case R_PPC64_LO_DS_OPT:
13614 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13615 if ((insn & (0x3f << 26)) != 58u << 26)
13617 insn += (14u << 26) - (58u << 26);
13618 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13619 r_type = R_PPC64_TOC16_LO;
13620 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13623 case R_PPC64_TOC16:
13624 case R_PPC64_TOC16_LO:
13625 case R_PPC64_TOC16_DS:
13626 case R_PPC64_TOC16_LO_DS:
13628 /* Check for toc tls entries. */
13629 unsigned char *toc_tls;
13632 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13633 &local_syms, rel, input_bfd);
13639 tls_mask = *toc_tls;
13640 if (r_type == R_PPC64_TOC16_DS
13641 || r_type == R_PPC64_TOC16_LO_DS)
13644 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13649 /* If we found a GD reloc pair, then we might be
13650 doing a GD->IE transition. */
13653 tls_gd = TLS_TPRELGD;
13654 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13657 else if (retval == 3)
13659 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13667 case R_PPC64_GOT_TPREL16_HI:
13668 case R_PPC64_GOT_TPREL16_HA:
13670 && (tls_mask & TLS_TPREL) == 0)
13672 rel->r_offset -= d_offset;
13673 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13674 r_type = R_PPC64_NONE;
13675 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13679 case R_PPC64_GOT_TPREL16_DS:
13680 case R_PPC64_GOT_TPREL16_LO_DS:
13682 && (tls_mask & TLS_TPREL) == 0)
13685 insn = bfd_get_32 (input_bfd,
13686 contents + rel->r_offset - d_offset);
13688 insn |= 0x3c0d0000; /* addis 0,13,0 */
13689 bfd_put_32 (input_bfd, insn,
13690 contents + rel->r_offset - d_offset);
13691 r_type = R_PPC64_TPREL16_HA;
13692 if (toc_symndx != 0)
13694 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13695 rel->r_addend = toc_addend;
13696 /* We changed the symbol. Start over in order to
13697 get h, sym, sec etc. right. */
13701 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13707 && (tls_mask & TLS_TPREL) == 0)
13709 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13710 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13713 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13714 /* Was PPC64_TLS which sits on insn boundary, now
13715 PPC64_TPREL16_LO which is at low-order half-word. */
13716 rel->r_offset += d_offset;
13717 r_type = R_PPC64_TPREL16_LO;
13718 if (toc_symndx != 0)
13720 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13721 rel->r_addend = toc_addend;
13722 /* We changed the symbol. Start over in order to
13723 get h, sym, sec etc. right. */
13727 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13731 case R_PPC64_GOT_TLSGD16_HI:
13732 case R_PPC64_GOT_TLSGD16_HA:
13733 tls_gd = TLS_TPRELGD;
13734 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13738 case R_PPC64_GOT_TLSLD16_HI:
13739 case R_PPC64_GOT_TLSLD16_HA:
13740 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13743 if ((tls_mask & tls_gd) != 0)
13744 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13745 + R_PPC64_GOT_TPREL16_DS);
13748 rel->r_offset -= d_offset;
13749 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13750 r_type = R_PPC64_NONE;
13752 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13756 case R_PPC64_GOT_TLSGD16:
13757 case R_PPC64_GOT_TLSGD16_LO:
13758 tls_gd = TLS_TPRELGD;
13759 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13763 case R_PPC64_GOT_TLSLD16:
13764 case R_PPC64_GOT_TLSLD16_LO:
13765 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13767 unsigned int insn1, insn2;
13771 offset = (bfd_vma) -1;
13772 /* If not using the newer R_PPC64_TLSGD/LD to mark
13773 __tls_get_addr calls, we must trust that the call
13774 stays with its arg setup insns, ie. that the next
13775 reloc is the __tls_get_addr call associated with
13776 the current reloc. Edit both insns. */
13777 if (input_section->has_tls_get_addr_call
13778 && rel + 1 < relend
13779 && branch_reloc_hash_match (input_bfd, rel + 1,
13780 htab->tls_get_addr,
13781 htab->tls_get_addr_fd))
13782 offset = rel[1].r_offset;
13783 /* We read the low GOT_TLS (or TOC16) insn because we
13784 need to keep the destination reg. It may be
13785 something other than the usual r3, and moved to r3
13786 before the call by intervening code. */
13787 insn1 = bfd_get_32 (input_bfd,
13788 contents + rel->r_offset - d_offset);
13789 if ((tls_mask & tls_gd) != 0)
13792 insn1 &= (0x1f << 21) | (0x1f << 16);
13793 insn1 |= 58 << 26; /* ld */
13794 insn2 = 0x7c636a14; /* add 3,3,13 */
13795 if (offset != (bfd_vma) -1)
13796 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13797 if ((tls_mask & TLS_EXPLICIT) == 0)
13798 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13799 + R_PPC64_GOT_TPREL16_DS);
13801 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13802 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13807 insn1 &= 0x1f << 21;
13808 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13809 insn2 = 0x38630000; /* addi 3,3,0 */
13812 /* Was an LD reloc. */
13814 sec = local_sections[toc_symndx];
13816 r_symndx < symtab_hdr->sh_info;
13818 if (local_sections[r_symndx] == sec)
13820 if (r_symndx >= symtab_hdr->sh_info)
13821 r_symndx = STN_UNDEF;
13822 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13823 if (r_symndx != STN_UNDEF)
13824 rel->r_addend -= (local_syms[r_symndx].st_value
13825 + sec->output_offset
13826 + sec->output_section->vma);
13828 else if (toc_symndx != 0)
13830 r_symndx = toc_symndx;
13831 rel->r_addend = toc_addend;
13833 r_type = R_PPC64_TPREL16_HA;
13834 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13835 if (offset != (bfd_vma) -1)
13837 rel[1].r_info = ELF64_R_INFO (r_symndx,
13838 R_PPC64_TPREL16_LO);
13839 rel[1].r_offset = offset + d_offset;
13840 rel[1].r_addend = rel->r_addend;
13843 bfd_put_32 (input_bfd, insn1,
13844 contents + rel->r_offset - d_offset);
13845 if (offset != (bfd_vma) -1)
13846 bfd_put_32 (input_bfd, insn2, contents + offset);
13847 if ((tls_mask & tls_gd) == 0
13848 && (tls_gd == 0 || toc_symndx != 0))
13850 /* We changed the symbol. Start over in order
13851 to get h, sym, sec etc. right. */
13857 case R_PPC64_TLSGD:
13858 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13860 unsigned int insn2;
13861 bfd_vma offset = rel->r_offset;
13863 if ((tls_mask & TLS_TPRELGD) != 0)
13866 r_type = R_PPC64_NONE;
13867 insn2 = 0x7c636a14; /* add 3,3,13 */
13872 if (toc_symndx != 0)
13874 r_symndx = toc_symndx;
13875 rel->r_addend = toc_addend;
13877 r_type = R_PPC64_TPREL16_LO;
13878 rel->r_offset = offset + d_offset;
13879 insn2 = 0x38630000; /* addi 3,3,0 */
13881 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13882 /* Zap the reloc on the _tls_get_addr call too. */
13883 BFD_ASSERT (offset == rel[1].r_offset);
13884 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13885 bfd_put_32 (input_bfd, insn2, contents + offset);
13886 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13891 case R_PPC64_TLSLD:
13892 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13894 unsigned int insn2;
13895 bfd_vma offset = rel->r_offset;
13898 sec = local_sections[toc_symndx];
13900 r_symndx < symtab_hdr->sh_info;
13902 if (local_sections[r_symndx] == sec)
13904 if (r_symndx >= symtab_hdr->sh_info)
13905 r_symndx = STN_UNDEF;
13906 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13907 if (r_symndx != STN_UNDEF)
13908 rel->r_addend -= (local_syms[r_symndx].st_value
13909 + sec->output_offset
13910 + sec->output_section->vma);
13912 r_type = R_PPC64_TPREL16_LO;
13913 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13914 rel->r_offset = offset + d_offset;
13915 /* Zap the reloc on the _tls_get_addr call too. */
13916 BFD_ASSERT (offset == rel[1].r_offset);
13917 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13918 insn2 = 0x38630000; /* addi 3,3,0 */
13919 bfd_put_32 (input_bfd, insn2, contents + offset);
13924 case R_PPC64_DTPMOD64:
13925 if (rel + 1 < relend
13926 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13927 && rel[1].r_offset == rel->r_offset + 8)
13929 if ((tls_mask & TLS_GD) == 0)
13931 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13932 if ((tls_mask & TLS_TPRELGD) != 0)
13933 r_type = R_PPC64_TPREL64;
13936 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13937 r_type = R_PPC64_NONE;
13939 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13944 if ((tls_mask & TLS_LD) == 0)
13946 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13947 r_type = R_PPC64_NONE;
13948 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13953 case R_PPC64_TPREL64:
13954 if ((tls_mask & TLS_TPREL) == 0)
13956 r_type = R_PPC64_NONE;
13957 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13961 case R_PPC64_ENTRY:
13962 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13963 if (!bfd_link_pic (info)
13964 && !info->traditional_format
13965 && relocation + 0x80008000 <= 0xffffffff)
13967 unsigned int insn1, insn2;
13969 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13970 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13971 if ((insn1 & ~0xfffc) == LD_R2_0R12
13972 && insn2 == ADD_R2_R2_R12)
13974 bfd_put_32 (input_bfd,
13975 LIS_R2 + PPC_HA (relocation),
13976 contents + rel->r_offset);
13977 bfd_put_32 (input_bfd,
13978 ADDI_R2_R2 + PPC_LO (relocation),
13979 contents + rel->r_offset + 4);
13984 relocation -= (rel->r_offset
13985 + input_section->output_offset
13986 + input_section->output_section->vma);
13987 if (relocation + 0x80008000 <= 0xffffffff)
13989 unsigned int insn1, insn2;
13991 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13992 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13993 if ((insn1 & ~0xfffc) == LD_R2_0R12
13994 && insn2 == ADD_R2_R2_R12)
13996 bfd_put_32 (input_bfd,
13997 ADDIS_R2_R12 + PPC_HA (relocation),
13998 contents + rel->r_offset);
13999 bfd_put_32 (input_bfd,
14000 ADDI_R2_R2 + PPC_LO (relocation),
14001 contents + rel->r_offset + 4);
14007 case R_PPC64_REL16_HA:
14008 /* If we are generating a non-PIC executable, edit
14009 . 0: addis 2,12,.TOC.-0b@ha
14010 . addi 2,2,.TOC.-0b@l
14011 used by ELFv2 global entry points to set up r2, to
14014 if .TOC. is in range. */
14015 if (!bfd_link_pic (info)
14016 && !info->traditional_format
14018 && rel->r_addend == d_offset
14019 && h != NULL && &h->elf == htab->elf.hgot
14020 && rel + 1 < relend
14021 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14022 && rel[1].r_offset == rel->r_offset + 4
14023 && rel[1].r_addend == rel->r_addend + 4
14024 && relocation + 0x80008000 <= 0xffffffff)
14026 unsigned int insn1, insn2;
14027 bfd_vma offset = rel->r_offset - d_offset;
14028 insn1 = bfd_get_32 (input_bfd, contents + offset);
14029 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14030 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14031 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14033 r_type = R_PPC64_ADDR16_HA;
14034 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14035 rel->r_addend -= d_offset;
14036 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14037 rel[1].r_addend -= d_offset + 4;
14038 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14044 /* Handle other relocations that tweak non-addend part of insn. */
14046 max_br_offset = 1 << 25;
14047 addend = rel->r_addend;
14048 reloc_dest = DEST_NORMAL;
14054 case R_PPC64_TOCSAVE:
14055 if (relocation + addend == (rel->r_offset
14056 + input_section->output_offset
14057 + input_section->output_section->vma)
14058 && tocsave_find (htab, NO_INSERT,
14059 &local_syms, rel, input_bfd))
14061 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14063 || insn == CROR_151515 || insn == CROR_313131)
14064 bfd_put_32 (input_bfd,
14065 STD_R2_0R1 + STK_TOC (htab),
14066 contents + rel->r_offset);
14070 /* Branch taken prediction relocations. */
14071 case R_PPC64_ADDR14_BRTAKEN:
14072 case R_PPC64_REL14_BRTAKEN:
14073 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14074 /* Fall through. */
14076 /* Branch not taken prediction relocations. */
14077 case R_PPC64_ADDR14_BRNTAKEN:
14078 case R_PPC64_REL14_BRNTAKEN:
14079 insn |= bfd_get_32 (input_bfd,
14080 contents + rel->r_offset) & ~(0x01 << 21);
14081 /* Fall through. */
14083 case R_PPC64_REL14:
14084 max_br_offset = 1 << 15;
14085 /* Fall through. */
14087 case R_PPC64_REL24:
14088 /* Calls to functions with a different TOC, such as calls to
14089 shared objects, need to alter the TOC pointer. This is
14090 done using a linkage stub. A REL24 branching to these
14091 linkage stubs needs to be followed by a nop, as the nop
14092 will be replaced with an instruction to restore the TOC
14097 && h->oh->is_func_descriptor)
14098 fdh = ppc_follow_link (h->oh);
14099 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14101 if (stub_entry != NULL
14102 && (stub_entry->stub_type == ppc_stub_plt_call
14103 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14104 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14105 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14107 bfd_boolean can_plt_call = FALSE;
14109 if (stub_entry->stub_type == ppc_stub_plt_call
14111 && htab->params->plt_localentry0 != 0
14112 && is_elfv2_localentry0 (&h->elf))
14114 /* The function doesn't use or change r2. */
14115 can_plt_call = TRUE;
14118 /* All of these stubs may modify r2, so there must be a
14119 branch and link followed by a nop. The nop is
14120 replaced by an insn to restore r2. */
14121 else if (rel->r_offset + 8 <= input_section->size)
14125 br = bfd_get_32 (input_bfd,
14126 contents + rel->r_offset);
14131 nop = bfd_get_32 (input_bfd,
14132 contents + rel->r_offset + 4);
14134 || nop == CROR_151515 || nop == CROR_313131)
14137 && (h == htab->tls_get_addr_fd
14138 || h == htab->tls_get_addr)
14139 && htab->params->tls_get_addr_opt)
14141 /* Special stub used, leave nop alone. */
14144 bfd_put_32 (input_bfd,
14145 LD_R2_0R1 + STK_TOC (htab),
14146 contents + rel->r_offset + 4);
14147 can_plt_call = TRUE;
14152 if (!can_plt_call && h != NULL)
14154 const char *name = h->elf.root.root.string;
14159 if (strncmp (name, "__libc_start_main", 17) == 0
14160 && (name[17] == 0 || name[17] == '@'))
14162 /* Allow crt1 branch to go via a toc adjusting
14163 stub. Other calls that never return could do
14164 the same, if we could detect such. */
14165 can_plt_call = TRUE;
14171 /* g++ as of 20130507 emits self-calls without a
14172 following nop. This is arguably wrong since we
14173 have conflicting information. On the one hand a
14174 global symbol and on the other a local call
14175 sequence, but don't error for this special case.
14176 It isn't possible to cheaply verify we have
14177 exactly such a call. Allow all calls to the same
14179 asection *code_sec = sec;
14181 if (get_opd_info (sec) != NULL)
14183 bfd_vma off = (relocation + addend
14184 - sec->output_section->vma
14185 - sec->output_offset);
14187 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14189 if (code_sec == input_section)
14190 can_plt_call = TRUE;
14195 if (stub_entry->stub_type == ppc_stub_plt_call
14196 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14197 info->callbacks->einfo
14198 /* xgettext:c-format */
14199 (_("%H: call to `%T' lacks nop, can't restore toc; "
14200 "recompile with -fPIC\n"),
14201 input_bfd, input_section, rel->r_offset, sym_name);
14203 info->callbacks->einfo
14204 /* xgettext:c-format */
14205 (_("%H: call to `%T' lacks nop, can't restore toc; "
14206 "(-mcmodel=small toc adjust stub)\n"),
14207 input_bfd, input_section, rel->r_offset, sym_name);
14209 bfd_set_error (bfd_error_bad_value);
14214 && (stub_entry->stub_type == ppc_stub_plt_call
14215 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14216 unresolved_reloc = FALSE;
14219 if ((stub_entry == NULL
14220 || stub_entry->stub_type == ppc_stub_long_branch
14221 || stub_entry->stub_type == ppc_stub_plt_branch)
14222 && get_opd_info (sec) != NULL)
14224 /* The branch destination is the value of the opd entry. */
14225 bfd_vma off = (relocation + addend
14226 - sec->output_section->vma
14227 - sec->output_offset);
14228 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14229 if (dest != (bfd_vma) -1)
14233 reloc_dest = DEST_OPD;
14237 /* If the branch is out of reach we ought to have a long
14239 from = (rel->r_offset
14240 + input_section->output_offset
14241 + input_section->output_section->vma);
14243 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14247 if (stub_entry != NULL
14248 && (stub_entry->stub_type == ppc_stub_long_branch
14249 || stub_entry->stub_type == ppc_stub_plt_branch)
14250 && (r_type == R_PPC64_ADDR14_BRTAKEN
14251 || r_type == R_PPC64_ADDR14_BRNTAKEN
14252 || (relocation + addend - from + max_br_offset
14253 < 2 * max_br_offset)))
14254 /* Don't use the stub if this branch is in range. */
14257 if (stub_entry != NULL)
14259 /* Munge up the value and addend so that we call the stub
14260 rather than the procedure directly. */
14261 asection *stub_sec = stub_entry->group->stub_sec;
14263 if (stub_entry->stub_type == ppc_stub_save_res)
14264 relocation += (stub_sec->output_offset
14265 + stub_sec->output_section->vma
14266 + stub_sec->size - htab->sfpr->size
14267 - htab->sfpr->output_offset
14268 - htab->sfpr->output_section->vma);
14270 relocation = (stub_entry->stub_offset
14271 + stub_sec->output_offset
14272 + stub_sec->output_section->vma);
14274 reloc_dest = DEST_STUB;
14276 if ((stub_entry->stub_type == ppc_stub_plt_call
14277 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14278 && (ALWAYS_EMIT_R2SAVE
14279 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14280 && rel + 1 < relend
14281 && rel[1].r_offset == rel->r_offset + 4
14282 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14290 /* Set 'a' bit. This is 0b00010 in BO field for branch
14291 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14292 for branch on CTR insns (BO == 1a00t or 1a01t). */
14293 if ((insn & (0x14 << 21)) == (0x04 << 21))
14294 insn |= 0x02 << 21;
14295 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14296 insn |= 0x08 << 21;
14302 /* Invert 'y' bit if not the default. */
14303 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14304 insn ^= 0x01 << 21;
14307 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14310 /* NOP out calls to undefined weak functions.
14311 We can thus call a weak function without first
14312 checking whether the function is defined. */
14314 && h->elf.root.type == bfd_link_hash_undefweak
14315 && h->elf.dynindx == -1
14316 && r_type == R_PPC64_REL24
14320 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14326 /* Set `addend'. */
14331 info->callbacks->einfo
14332 /* xgettext:c-format */
14333 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14334 input_bfd, (int) r_type, sym_name);
14336 bfd_set_error (bfd_error_bad_value);
14342 case R_PPC64_TLSGD:
14343 case R_PPC64_TLSLD:
14344 case R_PPC64_TOCSAVE:
14345 case R_PPC64_GNU_VTINHERIT:
14346 case R_PPC64_GNU_VTENTRY:
14347 case R_PPC64_ENTRY:
14350 /* GOT16 relocations. Like an ADDR16 using the symbol's
14351 address in the GOT as relocation value instead of the
14352 symbol's value itself. Also, create a GOT entry for the
14353 symbol and put the symbol value there. */
14354 case R_PPC64_GOT_TLSGD16:
14355 case R_PPC64_GOT_TLSGD16_LO:
14356 case R_PPC64_GOT_TLSGD16_HI:
14357 case R_PPC64_GOT_TLSGD16_HA:
14358 tls_type = TLS_TLS | TLS_GD;
14361 case R_PPC64_GOT_TLSLD16:
14362 case R_PPC64_GOT_TLSLD16_LO:
14363 case R_PPC64_GOT_TLSLD16_HI:
14364 case R_PPC64_GOT_TLSLD16_HA:
14365 tls_type = TLS_TLS | TLS_LD;
14368 case R_PPC64_GOT_TPREL16_DS:
14369 case R_PPC64_GOT_TPREL16_LO_DS:
14370 case R_PPC64_GOT_TPREL16_HI:
14371 case R_PPC64_GOT_TPREL16_HA:
14372 tls_type = TLS_TLS | TLS_TPREL;
14375 case R_PPC64_GOT_DTPREL16_DS:
14376 case R_PPC64_GOT_DTPREL16_LO_DS:
14377 case R_PPC64_GOT_DTPREL16_HI:
14378 case R_PPC64_GOT_DTPREL16_HA:
14379 tls_type = TLS_TLS | TLS_DTPREL;
14382 case R_PPC64_GOT16:
14383 case R_PPC64_GOT16_LO:
14384 case R_PPC64_GOT16_HI:
14385 case R_PPC64_GOT16_HA:
14386 case R_PPC64_GOT16_DS:
14387 case R_PPC64_GOT16_LO_DS:
14390 /* Relocation is to the entry for this symbol in the global
14395 unsigned long indx = 0;
14396 struct got_entry *ent;
14398 if (tls_type == (TLS_TLS | TLS_LD)
14400 || !h->elf.def_dynamic))
14401 ent = ppc64_tlsld_got (input_bfd);
14406 if (!htab->elf.dynamic_sections_created
14407 || h->elf.dynindx == -1
14408 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14409 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14410 /* This is actually a static link, or it is a
14411 -Bsymbolic link and the symbol is defined
14412 locally, or the symbol was forced to be local
14413 because of a version file. */
14417 indx = h->elf.dynindx;
14418 unresolved_reloc = FALSE;
14420 ent = h->elf.got.glist;
14424 if (local_got_ents == NULL)
14426 ent = local_got_ents[r_symndx];
14429 for (; ent != NULL; ent = ent->next)
14430 if (ent->addend == orig_rel.r_addend
14431 && ent->owner == input_bfd
14432 && ent->tls_type == tls_type)
14438 if (ent->is_indirect)
14439 ent = ent->got.ent;
14440 offp = &ent->got.offset;
14441 got = ppc64_elf_tdata (ent->owner)->got;
14445 /* The offset must always be a multiple of 8. We use the
14446 least significant bit to record whether we have already
14447 processed this entry. */
14449 if ((off & 1) != 0)
14453 /* Generate relocs for the dynamic linker, except in
14454 the case of TLSLD where we'll use one entry per
14462 ? h->elf.type == STT_GNU_IFUNC
14463 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14466 relgot = htab->elf.irelplt;
14468 htab->local_ifunc_resolver = 1;
14469 else if (is_static_defined (&h->elf))
14470 htab->maybe_local_ifunc_resolver = 1;
14473 || (bfd_link_pic (info)
14475 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14476 || (tls_type == (TLS_TLS | TLS_LD)
14477 && !h->elf.def_dynamic))
14478 && !(tls_type == (TLS_TLS | TLS_TPREL)
14479 && bfd_link_executable (info)
14480 && SYMBOL_REFERENCES_LOCAL (info, &h->elf))))
14481 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14482 if (relgot != NULL)
14484 outrel.r_offset = (got->output_section->vma
14485 + got->output_offset
14487 outrel.r_addend = addend;
14488 if (tls_type & (TLS_LD | TLS_GD))
14490 outrel.r_addend = 0;
14491 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14492 if (tls_type == (TLS_TLS | TLS_GD))
14494 loc = relgot->contents;
14495 loc += (relgot->reloc_count++
14496 * sizeof (Elf64_External_Rela));
14497 bfd_elf64_swap_reloca_out (output_bfd,
14499 outrel.r_offset += 8;
14500 outrel.r_addend = addend;
14502 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14505 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14506 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14507 else if (tls_type == (TLS_TLS | TLS_TPREL))
14508 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14509 else if (indx != 0)
14510 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14514 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14516 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14518 /* Write the .got section contents for the sake
14520 loc = got->contents + off;
14521 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14525 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14527 outrel.r_addend += relocation;
14528 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14530 if (htab->elf.tls_sec == NULL)
14531 outrel.r_addend = 0;
14533 outrel.r_addend -= htab->elf.tls_sec->vma;
14536 loc = relgot->contents;
14537 loc += (relgot->reloc_count++
14538 * sizeof (Elf64_External_Rela));
14539 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14542 /* Init the .got section contents here if we're not
14543 emitting a reloc. */
14546 relocation += addend;
14549 if (htab->elf.tls_sec == NULL)
14553 if (tls_type & TLS_LD)
14556 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14557 if (tls_type & TLS_TPREL)
14558 relocation += DTP_OFFSET - TP_OFFSET;
14561 if (tls_type & (TLS_GD | TLS_LD))
14563 bfd_put_64 (output_bfd, relocation,
14564 got->contents + off + 8);
14568 bfd_put_64 (output_bfd, relocation,
14569 got->contents + off);
14573 if (off >= (bfd_vma) -2)
14576 relocation = got->output_section->vma + got->output_offset + off;
14577 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14581 case R_PPC64_PLT16_HA:
14582 case R_PPC64_PLT16_HI:
14583 case R_PPC64_PLT16_LO:
14584 case R_PPC64_PLT32:
14585 case R_PPC64_PLT64:
14586 /* Relocation is to the entry for this symbol in the
14587 procedure linkage table. */
14589 struct plt_entry **plt_list = NULL;
14591 plt_list = &h->elf.plt.plist;
14592 else if (local_got_ents != NULL)
14594 struct plt_entry **local_plt = (struct plt_entry **)
14595 (local_got_ents + symtab_hdr->sh_info);
14596 unsigned char *local_got_tls_masks = (unsigned char *)
14597 (local_plt + symtab_hdr->sh_info);
14598 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14599 plt_list = local_plt + r_symndx;
14603 struct plt_entry *ent;
14605 for (ent = *plt_list; ent != NULL; ent = ent->next)
14606 if (ent->plt.offset != (bfd_vma) -1
14607 && ent->addend == orig_rel.r_addend)
14611 plt = htab->elf.splt;
14612 if (!htab->elf.dynamic_sections_created
14614 || h->elf.dynindx == -1)
14615 plt = htab->elf.iplt;
14616 relocation = (plt->output_section->vma
14617 + plt->output_offset
14618 + ent->plt.offset);
14620 unresolved_reloc = FALSE;
14628 /* Relocation value is TOC base. */
14629 relocation = TOCstart;
14630 if (r_symndx == STN_UNDEF)
14631 relocation += htab->sec_info[input_section->id].toc_off;
14632 else if (unresolved_reloc)
14634 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14635 relocation += htab->sec_info[sec->id].toc_off;
14637 unresolved_reloc = TRUE;
14640 /* TOC16 relocs. We want the offset relative to the TOC base,
14641 which is the address of the start of the TOC plus 0x8000.
14642 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14644 case R_PPC64_TOC16:
14645 case R_PPC64_TOC16_LO:
14646 case R_PPC64_TOC16_HI:
14647 case R_PPC64_TOC16_DS:
14648 case R_PPC64_TOC16_LO_DS:
14649 case R_PPC64_TOC16_HA:
14650 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14653 /* Relocate against the beginning of the section. */
14654 case R_PPC64_SECTOFF:
14655 case R_PPC64_SECTOFF_LO:
14656 case R_PPC64_SECTOFF_HI:
14657 case R_PPC64_SECTOFF_DS:
14658 case R_PPC64_SECTOFF_LO_DS:
14659 case R_PPC64_SECTOFF_HA:
14661 addend -= sec->output_section->vma;
14664 case R_PPC64_REL16:
14665 case R_PPC64_REL16_LO:
14666 case R_PPC64_REL16_HI:
14667 case R_PPC64_REL16_HA:
14668 case R_PPC64_REL16DX_HA:
14671 case R_PPC64_REL14:
14672 case R_PPC64_REL14_BRNTAKEN:
14673 case R_PPC64_REL14_BRTAKEN:
14674 case R_PPC64_REL24:
14677 case R_PPC64_TPREL16:
14678 case R_PPC64_TPREL16_LO:
14679 case R_PPC64_TPREL16_HI:
14680 case R_PPC64_TPREL16_HA:
14681 case R_PPC64_TPREL16_DS:
14682 case R_PPC64_TPREL16_LO_DS:
14683 case R_PPC64_TPREL16_HIGH:
14684 case R_PPC64_TPREL16_HIGHA:
14685 case R_PPC64_TPREL16_HIGHER:
14686 case R_PPC64_TPREL16_HIGHERA:
14687 case R_PPC64_TPREL16_HIGHEST:
14688 case R_PPC64_TPREL16_HIGHESTA:
14690 && h->elf.root.type == bfd_link_hash_undefweak
14691 && h->elf.dynindx == -1)
14693 /* Make this relocation against an undefined weak symbol
14694 resolve to zero. This is really just a tweak, since
14695 code using weak externs ought to check that they are
14696 defined before using them. */
14697 bfd_byte *p = contents + rel->r_offset - d_offset;
14699 insn = bfd_get_32 (input_bfd, p);
14700 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14702 bfd_put_32 (input_bfd, insn, p);
14705 if (htab->elf.tls_sec != NULL)
14706 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14707 /* The TPREL16 relocs shouldn't really be used in shared
14708 libs or with non-local symbols as that will result in
14709 DT_TEXTREL being set, but support them anyway. */
14712 case R_PPC64_DTPREL16:
14713 case R_PPC64_DTPREL16_LO:
14714 case R_PPC64_DTPREL16_HI:
14715 case R_PPC64_DTPREL16_HA:
14716 case R_PPC64_DTPREL16_DS:
14717 case R_PPC64_DTPREL16_LO_DS:
14718 case R_PPC64_DTPREL16_HIGH:
14719 case R_PPC64_DTPREL16_HIGHA:
14720 case R_PPC64_DTPREL16_HIGHER:
14721 case R_PPC64_DTPREL16_HIGHERA:
14722 case R_PPC64_DTPREL16_HIGHEST:
14723 case R_PPC64_DTPREL16_HIGHESTA:
14724 if (htab->elf.tls_sec != NULL)
14725 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14728 case R_PPC64_ADDR64_LOCAL:
14729 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14734 case R_PPC64_DTPMOD64:
14739 case R_PPC64_TPREL64:
14740 if (htab->elf.tls_sec != NULL)
14741 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14744 case R_PPC64_DTPREL64:
14745 if (htab->elf.tls_sec != NULL)
14746 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14747 /* Fall through. */
14749 /* Relocations that may need to be propagated if this is a
14751 case R_PPC64_REL30:
14752 case R_PPC64_REL32:
14753 case R_PPC64_REL64:
14754 case R_PPC64_ADDR14:
14755 case R_PPC64_ADDR14_BRNTAKEN:
14756 case R_PPC64_ADDR14_BRTAKEN:
14757 case R_PPC64_ADDR16:
14758 case R_PPC64_ADDR16_DS:
14759 case R_PPC64_ADDR16_HA:
14760 case R_PPC64_ADDR16_HI:
14761 case R_PPC64_ADDR16_HIGH:
14762 case R_PPC64_ADDR16_HIGHA:
14763 case R_PPC64_ADDR16_HIGHER:
14764 case R_PPC64_ADDR16_HIGHERA:
14765 case R_PPC64_ADDR16_HIGHEST:
14766 case R_PPC64_ADDR16_HIGHESTA:
14767 case R_PPC64_ADDR16_LO:
14768 case R_PPC64_ADDR16_LO_DS:
14769 case R_PPC64_ADDR24:
14770 case R_PPC64_ADDR32:
14771 case R_PPC64_ADDR64:
14772 case R_PPC64_UADDR16:
14773 case R_PPC64_UADDR32:
14774 case R_PPC64_UADDR64:
14776 if ((input_section->flags & SEC_ALLOC) == 0)
14779 if (NO_OPD_RELOCS && is_opd)
14782 if (bfd_link_pic (info)
14784 || h->dyn_relocs != NULL)
14785 && ((h != NULL && pc_dynrelocs (h))
14786 || must_be_dyn_reloc (info, r_type)))
14788 ? h->dyn_relocs != NULL
14789 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14791 bfd_boolean skip, relocate;
14796 /* When generating a dynamic object, these relocations
14797 are copied into the output file to be resolved at run
14803 out_off = _bfd_elf_section_offset (output_bfd, info,
14804 input_section, rel->r_offset);
14805 if (out_off == (bfd_vma) -1)
14807 else if (out_off == (bfd_vma) -2)
14808 skip = TRUE, relocate = TRUE;
14809 out_off += (input_section->output_section->vma
14810 + input_section->output_offset);
14811 outrel.r_offset = out_off;
14812 outrel.r_addend = rel->r_addend;
14814 /* Optimize unaligned reloc use. */
14815 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14816 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14817 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14818 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14819 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14820 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14821 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14822 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14823 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14826 memset (&outrel, 0, sizeof outrel);
14827 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14829 && r_type != R_PPC64_TOC)
14831 indx = h->elf.dynindx;
14832 BFD_ASSERT (indx != -1);
14833 outrel.r_info = ELF64_R_INFO (indx, r_type);
14837 /* This symbol is local, or marked to become local,
14838 or this is an opd section reloc which must point
14839 at a local function. */
14840 outrel.r_addend += relocation;
14841 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14843 if (is_opd && h != NULL)
14845 /* Lie about opd entries. This case occurs
14846 when building shared libraries and we
14847 reference a function in another shared
14848 lib. The same thing happens for a weak
14849 definition in an application that's
14850 overridden by a strong definition in a
14851 shared lib. (I believe this is a generic
14852 bug in binutils handling of weak syms.)
14853 In these cases we won't use the opd
14854 entry in this lib. */
14855 unresolved_reloc = FALSE;
14858 && r_type == R_PPC64_ADDR64
14860 ? h->elf.type == STT_GNU_IFUNC
14861 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14862 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14865 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14867 /* We need to relocate .opd contents for ld.so.
14868 Prelink also wants simple and consistent rules
14869 for relocs. This make all RELATIVE relocs have
14870 *r_offset equal to r_addend. */
14877 ? h->elf.type == STT_GNU_IFUNC
14878 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14880 info->callbacks->einfo
14881 /* xgettext:c-format */
14882 (_("%H: %s for indirect "
14883 "function `%T' unsupported\n"),
14884 input_bfd, input_section, rel->r_offset,
14885 ppc64_elf_howto_table[r_type]->name,
14889 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14891 else if (sec == NULL || sec->owner == NULL)
14893 bfd_set_error (bfd_error_bad_value);
14900 osec = sec->output_section;
14901 indx = elf_section_data (osec)->dynindx;
14905 if ((osec->flags & SEC_READONLY) == 0
14906 && htab->elf.data_index_section != NULL)
14907 osec = htab->elf.data_index_section;
14909 osec = htab->elf.text_index_section;
14910 indx = elf_section_data (osec)->dynindx;
14912 BFD_ASSERT (indx != 0);
14914 /* We are turning this relocation into one
14915 against a section symbol, so subtract out
14916 the output section's address but not the
14917 offset of the input section in the output
14919 outrel.r_addend -= osec->vma;
14922 outrel.r_info = ELF64_R_INFO (indx, r_type);
14926 sreloc = elf_section_data (input_section)->sreloc;
14928 ? h->elf.type == STT_GNU_IFUNC
14929 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14931 sreloc = htab->elf.irelplt;
14933 htab->local_ifunc_resolver = 1;
14934 else if (is_static_defined (&h->elf))
14935 htab->maybe_local_ifunc_resolver = 1;
14937 if (sreloc == NULL)
14940 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14943 loc = sreloc->contents;
14944 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14945 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14947 /* If this reloc is against an external symbol, it will
14948 be computed at runtime, so there's no need to do
14949 anything now. However, for the sake of prelink ensure
14950 that the section contents are a known value. */
14953 unresolved_reloc = FALSE;
14954 /* The value chosen here is quite arbitrary as ld.so
14955 ignores section contents except for the special
14956 case of .opd where the contents might be accessed
14957 before relocation. Choose zero, as that won't
14958 cause reloc overflow. */
14961 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14962 to improve backward compatibility with older
14964 if (r_type == R_PPC64_ADDR64)
14965 addend = outrel.r_addend;
14966 /* Adjust pc_relative relocs to have zero in *r_offset. */
14967 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14968 addend = outrel.r_offset;
14974 case R_PPC64_GLOB_DAT:
14975 case R_PPC64_JMP_SLOT:
14976 case R_PPC64_JMP_IREL:
14977 case R_PPC64_RELATIVE:
14978 /* We shouldn't ever see these dynamic relocs in relocatable
14980 /* Fall through. */
14982 case R_PPC64_PLTGOT16:
14983 case R_PPC64_PLTGOT16_DS:
14984 case R_PPC64_PLTGOT16_HA:
14985 case R_PPC64_PLTGOT16_HI:
14986 case R_PPC64_PLTGOT16_LO:
14987 case R_PPC64_PLTGOT16_LO_DS:
14988 case R_PPC64_PLTREL32:
14989 case R_PPC64_PLTREL64:
14990 /* These ones haven't been implemented yet. */
14992 info->callbacks->einfo
14993 /* xgettext:c-format */
14994 (_("%P: %B: %s is not supported for `%T'\n"),
14996 ppc64_elf_howto_table[r_type]->name, sym_name);
14998 bfd_set_error (bfd_error_invalid_operation);
15003 /* Multi-instruction sequences that access the TOC can be
15004 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15005 to nop; addi rb,r2,x; */
15006 howto = ppc64_elf_howto_table[(int) r_type];
15012 case R_PPC64_GOT_TLSLD16_HI:
15013 case R_PPC64_GOT_TLSGD16_HI:
15014 case R_PPC64_GOT_TPREL16_HI:
15015 case R_PPC64_GOT_DTPREL16_HI:
15016 case R_PPC64_GOT16_HI:
15017 case R_PPC64_TOC16_HI:
15018 /* These relocs would only be useful if building up an
15019 offset to later add to r2, perhaps in an indexed
15020 addressing mode instruction. Don't try to optimize.
15021 Unfortunately, the possibility of someone building up an
15022 offset like this or even with the HA relocs, means that
15023 we need to check the high insn when optimizing the low
15027 case R_PPC64_GOT_TLSLD16_HA:
15028 case R_PPC64_GOT_TLSGD16_HA:
15029 case R_PPC64_GOT_TPREL16_HA:
15030 case R_PPC64_GOT_DTPREL16_HA:
15031 case R_PPC64_GOT16_HA:
15032 case R_PPC64_TOC16_HA:
15033 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15034 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15036 bfd_byte *p = contents + (rel->r_offset & ~3);
15037 bfd_put_32 (input_bfd, NOP, p);
15041 case R_PPC64_GOT_TLSLD16_LO:
15042 case R_PPC64_GOT_TLSGD16_LO:
15043 case R_PPC64_GOT_TPREL16_LO_DS:
15044 case R_PPC64_GOT_DTPREL16_LO_DS:
15045 case R_PPC64_GOT16_LO:
15046 case R_PPC64_GOT16_LO_DS:
15047 case R_PPC64_TOC16_LO:
15048 case R_PPC64_TOC16_LO_DS:
15049 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15050 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15052 bfd_byte *p = contents + (rel->r_offset & ~3);
15053 insn = bfd_get_32 (input_bfd, p);
15054 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15056 /* Transform addic to addi when we change reg. */
15057 insn &= ~((0x3f << 26) | (0x1f << 16));
15058 insn |= (14u << 26) | (2 << 16);
15062 insn &= ~(0x1f << 16);
15065 bfd_put_32 (input_bfd, insn, p);
15069 case R_PPC64_TPREL16_HA:
15070 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15072 bfd_byte *p = contents + (rel->r_offset & ~3);
15073 insn = bfd_get_32 (input_bfd, p);
15074 if ((insn & ((0x3f << 26) | 0x1f << 16))
15075 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15076 /* xgettext:c-format */
15077 info->callbacks->minfo
15078 (_("%H: warning: %s unexpected insn %#x.\n"),
15079 input_bfd, input_section, rel->r_offset, howto->name, insn);
15081 bfd_put_32 (input_bfd, NOP, p);
15085 case R_PPC64_TPREL16_LO:
15086 case R_PPC64_TPREL16_LO_DS:
15087 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15089 bfd_byte *p = contents + (rel->r_offset & ~3);
15090 insn = bfd_get_32 (input_bfd, p);
15091 insn &= ~(0x1f << 16);
15093 bfd_put_32 (input_bfd, insn, p);
15098 /* Do any further special processing. */
15104 case R_PPC64_REL16_HA:
15105 case R_PPC64_REL16DX_HA:
15106 case R_PPC64_ADDR16_HA:
15107 case R_PPC64_ADDR16_HIGHA:
15108 case R_PPC64_ADDR16_HIGHERA:
15109 case R_PPC64_ADDR16_HIGHESTA:
15110 case R_PPC64_TOC16_HA:
15111 case R_PPC64_SECTOFF_HA:
15112 case R_PPC64_TPREL16_HA:
15113 case R_PPC64_TPREL16_HIGHA:
15114 case R_PPC64_TPREL16_HIGHERA:
15115 case R_PPC64_TPREL16_HIGHESTA:
15116 case R_PPC64_DTPREL16_HA:
15117 case R_PPC64_DTPREL16_HIGHA:
15118 case R_PPC64_DTPREL16_HIGHERA:
15119 case R_PPC64_DTPREL16_HIGHESTA:
15120 /* It's just possible that this symbol is a weak symbol
15121 that's not actually defined anywhere. In that case,
15122 'sec' would be NULL, and we should leave the symbol
15123 alone (it will be set to zero elsewhere in the link). */
15126 /* Fall through. */
15128 case R_PPC64_GOT16_HA:
15129 case R_PPC64_PLTGOT16_HA:
15130 case R_PPC64_PLT16_HA:
15131 case R_PPC64_GOT_TLSGD16_HA:
15132 case R_PPC64_GOT_TLSLD16_HA:
15133 case R_PPC64_GOT_TPREL16_HA:
15134 case R_PPC64_GOT_DTPREL16_HA:
15135 /* Add 0x10000 if sign bit in 0:15 is set.
15136 Bits 0:15 are not used. */
15140 case R_PPC64_ADDR16_DS:
15141 case R_PPC64_ADDR16_LO_DS:
15142 case R_PPC64_GOT16_DS:
15143 case R_PPC64_GOT16_LO_DS:
15144 case R_PPC64_PLT16_LO_DS:
15145 case R_PPC64_SECTOFF_DS:
15146 case R_PPC64_SECTOFF_LO_DS:
15147 case R_PPC64_TOC16_DS:
15148 case R_PPC64_TOC16_LO_DS:
15149 case R_PPC64_PLTGOT16_DS:
15150 case R_PPC64_PLTGOT16_LO_DS:
15151 case R_PPC64_GOT_TPREL16_DS:
15152 case R_PPC64_GOT_TPREL16_LO_DS:
15153 case R_PPC64_GOT_DTPREL16_DS:
15154 case R_PPC64_GOT_DTPREL16_LO_DS:
15155 case R_PPC64_TPREL16_DS:
15156 case R_PPC64_TPREL16_LO_DS:
15157 case R_PPC64_DTPREL16_DS:
15158 case R_PPC64_DTPREL16_LO_DS:
15159 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15161 /* If this reloc is against an lq, lxv, or stxv insn, then
15162 the value must be a multiple of 16. This is somewhat of
15163 a hack, but the "correct" way to do this by defining _DQ
15164 forms of all the _DS relocs bloats all reloc switches in
15165 this file. It doesn't make much sense to use these
15166 relocs in data, so testing the insn should be safe. */
15167 if ((insn & (0x3f << 26)) == (56u << 26)
15168 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15170 relocation += addend;
15171 addend = insn & (mask ^ 3);
15172 if ((relocation & mask) != 0)
15174 relocation ^= relocation & mask;
15175 info->callbacks->einfo
15176 /* xgettext:c-format */
15177 (_("%H: error: %s not a multiple of %u\n"),
15178 input_bfd, input_section, rel->r_offset,
15181 bfd_set_error (bfd_error_bad_value);
15188 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15189 because such sections are not SEC_ALLOC and thus ld.so will
15190 not process them. */
15191 if (unresolved_reloc
15192 && !((input_section->flags & SEC_DEBUGGING) != 0
15193 && h->elf.def_dynamic)
15194 && _bfd_elf_section_offset (output_bfd, info, input_section,
15195 rel->r_offset) != (bfd_vma) -1)
15197 info->callbacks->einfo
15198 /* xgettext:c-format */
15199 (_("%H: unresolvable %s against `%T'\n"),
15200 input_bfd, input_section, rel->r_offset,
15202 h->elf.root.root.string);
15206 /* 16-bit fields in insns mostly have signed values, but a
15207 few insns have 16-bit unsigned values. Really, we should
15208 have different reloc types. */
15209 if (howto->complain_on_overflow != complain_overflow_dont
15210 && howto->dst_mask == 0xffff
15211 && (input_section->flags & SEC_CODE) != 0)
15213 enum complain_overflow complain = complain_overflow_signed;
15215 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15216 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15217 complain = complain_overflow_bitfield;
15218 else if (howto->rightshift == 0
15219 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15220 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15221 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15222 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15223 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15224 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15225 complain = complain_overflow_unsigned;
15226 if (howto->complain_on_overflow != complain)
15228 alt_howto = *howto;
15229 alt_howto.complain_on_overflow = complain;
15230 howto = &alt_howto;
15234 if (r_type == R_PPC64_REL16DX_HA)
15236 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15237 if (rel->r_offset + 4 > input_section->size)
15238 r = bfd_reloc_outofrange;
15241 relocation += addend;
15242 relocation -= (rel->r_offset
15243 + input_section->output_offset
15244 + input_section->output_section->vma);
15245 relocation = (bfd_signed_vma) relocation >> 16;
15246 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15248 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15249 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15251 if (relocation + 0x8000 > 0xffff)
15252 r = bfd_reloc_overflow;
15256 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15257 rel->r_offset, relocation, addend);
15259 if (r != bfd_reloc_ok)
15261 char *more_info = NULL;
15262 const char *reloc_name = howto->name;
15264 if (reloc_dest != DEST_NORMAL)
15266 more_info = bfd_malloc (strlen (reloc_name) + 8);
15267 if (more_info != NULL)
15269 strcpy (more_info, reloc_name);
15270 strcat (more_info, (reloc_dest == DEST_OPD
15271 ? " (OPD)" : " (stub)"));
15272 reloc_name = more_info;
15276 if (r == bfd_reloc_overflow)
15278 /* On code like "if (foo) foo();" don't report overflow
15279 on a branch to zero when foo is undefined. */
15281 && (reloc_dest == DEST_STUB
15283 && (h->elf.root.type == bfd_link_hash_undefweak
15284 || h->elf.root.type == bfd_link_hash_undefined)
15285 && is_branch_reloc (r_type))))
15286 info->callbacks->reloc_overflow (info, &h->elf.root,
15287 sym_name, reloc_name,
15289 input_bfd, input_section,
15294 info->callbacks->einfo
15295 /* xgettext:c-format */
15296 (_("%H: %s against `%T': error %d\n"),
15297 input_bfd, input_section, rel->r_offset,
15298 reloc_name, sym_name, (int) r);
15301 if (more_info != NULL)
15311 Elf_Internal_Shdr *rel_hdr;
15312 size_t deleted = rel - wrel;
15314 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15315 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15316 if (rel_hdr->sh_size == 0)
15318 /* It is too late to remove an empty reloc section. Leave
15320 ??? What is wrong with an empty section??? */
15321 rel_hdr->sh_size = rel_hdr->sh_entsize;
15324 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15325 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15326 input_section->reloc_count -= deleted;
15329 /* If we're emitting relocations, then shortly after this function
15330 returns, reloc offsets and addends for this section will be
15331 adjusted. Worse, reloc symbol indices will be for the output
15332 file rather than the input. Save a copy of the relocs for
15333 opd_entry_value. */
15334 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15337 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15338 rel = bfd_alloc (input_bfd, amt);
15339 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15340 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15343 memcpy (rel, relocs, amt);
15348 /* Adjust the value of any local symbols in opd sections. */
15351 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15352 const char *name ATTRIBUTE_UNUSED,
15353 Elf_Internal_Sym *elfsym,
15354 asection *input_sec,
15355 struct elf_link_hash_entry *h)
15357 struct _opd_sec_data *opd;
15364 opd = get_opd_info (input_sec);
15365 if (opd == NULL || opd->adjust == NULL)
15368 value = elfsym->st_value - input_sec->output_offset;
15369 if (!bfd_link_relocatable (info))
15370 value -= input_sec->output_section->vma;
15372 adjust = opd->adjust[OPD_NDX (value)];
15376 elfsym->st_value += adjust;
15380 /* Finish up dynamic symbol handling. We set the contents of various
15381 dynamic sections here. */
15384 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15385 struct bfd_link_info *info,
15386 struct elf_link_hash_entry *h,
15387 Elf_Internal_Sym *sym)
15389 struct ppc_link_hash_table *htab;
15390 struct plt_entry *ent;
15391 Elf_Internal_Rela rela;
15394 htab = ppc_hash_table (info);
15398 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15399 if (ent->plt.offset != (bfd_vma) -1)
15401 /* This symbol has an entry in the procedure linkage
15402 table. Set it up. */
15403 if (!htab->elf.dynamic_sections_created
15404 || h->dynindx == -1)
15406 BFD_ASSERT (h->type == STT_GNU_IFUNC
15408 && (h->root.type == bfd_link_hash_defined
15409 || h->root.type == bfd_link_hash_defweak));
15410 rela.r_offset = (htab->elf.iplt->output_section->vma
15411 + htab->elf.iplt->output_offset
15412 + ent->plt.offset);
15414 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15416 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15417 rela.r_addend = (h->root.u.def.value
15418 + h->root.u.def.section->output_offset
15419 + h->root.u.def.section->output_section->vma
15421 loc = (htab->elf.irelplt->contents
15422 + (htab->elf.irelplt->reloc_count++
15423 * sizeof (Elf64_External_Rela)));
15424 htab->local_ifunc_resolver = 1;
15428 rela.r_offset = (htab->elf.splt->output_section->vma
15429 + htab->elf.splt->output_offset
15430 + ent->plt.offset);
15431 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15432 rela.r_addend = ent->addend;
15433 loc = (htab->elf.srelplt->contents
15434 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15435 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15436 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15437 htab->maybe_local_ifunc_resolver = 1;
15439 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15441 if (!htab->opd_abi)
15443 if (!h->def_regular)
15445 /* Mark the symbol as undefined, rather than as
15446 defined in glink. Leave the value if there were
15447 any relocations where pointer equality matters
15448 (this is a clue for the dynamic linker, to make
15449 function pointer comparisons work between an
15450 application and shared library), otherwise set it
15452 sym->st_shndx = SHN_UNDEF;
15453 if (!h->pointer_equality_needed)
15455 else if (!h->ref_regular_nonweak)
15457 /* This breaks function pointer comparisons, but
15458 that is better than breaking tests for a NULL
15459 function pointer. */
15468 /* This symbol needs a copy reloc. Set it up. */
15471 if (h->dynindx == -1
15472 || (h->root.type != bfd_link_hash_defined
15473 && h->root.type != bfd_link_hash_defweak)
15474 || htab->elf.srelbss == NULL
15475 || htab->elf.sreldynrelro == NULL)
15478 rela.r_offset = (h->root.u.def.value
15479 + h->root.u.def.section->output_section->vma
15480 + h->root.u.def.section->output_offset);
15481 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15483 if (h->root.u.def.section == htab->elf.sdynrelro)
15484 srel = htab->elf.sreldynrelro;
15486 srel = htab->elf.srelbss;
15487 loc = srel->contents;
15488 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15489 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15495 /* Used to decide how to sort relocs in an optimal manner for the
15496 dynamic linker, before writing them out. */
15498 static enum elf_reloc_type_class
15499 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15500 const asection *rel_sec,
15501 const Elf_Internal_Rela *rela)
15503 enum elf_ppc64_reloc_type r_type;
15504 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15506 if (rel_sec == htab->elf.irelplt)
15507 return reloc_class_ifunc;
15509 r_type = ELF64_R_TYPE (rela->r_info);
15512 case R_PPC64_RELATIVE:
15513 return reloc_class_relative;
15514 case R_PPC64_JMP_SLOT:
15515 return reloc_class_plt;
15517 return reloc_class_copy;
15519 return reloc_class_normal;
15523 /* Finish up the dynamic sections. */
15526 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15527 struct bfd_link_info *info)
15529 struct ppc_link_hash_table *htab;
15533 htab = ppc_hash_table (info);
15537 dynobj = htab->elf.dynobj;
15538 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15540 if (htab->elf.dynamic_sections_created)
15542 Elf64_External_Dyn *dyncon, *dynconend;
15544 if (sdyn == NULL || htab->elf.sgot == NULL)
15547 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15548 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15549 for (; dyncon < dynconend; dyncon++)
15551 Elf_Internal_Dyn dyn;
15554 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15561 case DT_PPC64_GLINK:
15563 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15564 /* We stupidly defined DT_PPC64_GLINK to be the start
15565 of glink rather than the first entry point, which is
15566 what ld.so needs, and now have a bigger stub to
15567 support automatic multiple TOCs. */
15568 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15572 s = bfd_get_section_by_name (output_bfd, ".opd");
15575 dyn.d_un.d_ptr = s->vma;
15579 if (htab->do_multi_toc && htab->multi_toc_needed)
15580 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15581 if (htab->has_plt_localentry0)
15582 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15585 case DT_PPC64_OPDSZ:
15586 s = bfd_get_section_by_name (output_bfd, ".opd");
15589 dyn.d_un.d_val = s->size;
15593 s = htab->elf.splt;
15594 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15598 s = htab->elf.srelplt;
15599 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15603 dyn.d_un.d_val = htab->elf.srelplt->size;
15607 if (htab->local_ifunc_resolver)
15608 info->callbacks->einfo
15609 (_("%X%P: text relocations and GNU indirect "
15610 "functions will result in a segfault at runtime\n"));
15611 else if (htab->maybe_local_ifunc_resolver)
15612 info->callbacks->einfo
15613 (_("%P: warning: text relocations and GNU indirect "
15614 "functions may result in a segfault at runtime\n"));
15618 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15622 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15623 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15625 /* Fill in the first entry in the global offset table.
15626 We use it to hold the link-time TOCbase. */
15627 bfd_put_64 (output_bfd,
15628 elf_gp (output_bfd) + TOC_BASE_OFF,
15629 htab->elf.sgot->contents);
15631 /* Set .got entry size. */
15632 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15635 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15636 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15638 /* Set .plt entry size. */
15639 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15640 = PLT_ENTRY_SIZE (htab);
15643 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15644 brlt ourselves if emitrelocations. */
15645 if (htab->brlt != NULL
15646 && htab->brlt->reloc_count != 0
15647 && !_bfd_elf_link_output_relocs (output_bfd,
15649 elf_section_data (htab->brlt)->rela.hdr,
15650 elf_section_data (htab->brlt)->relocs,
15654 if (htab->glink != NULL
15655 && htab->glink->reloc_count != 0
15656 && !_bfd_elf_link_output_relocs (output_bfd,
15658 elf_section_data (htab->glink)->rela.hdr,
15659 elf_section_data (htab->glink)->relocs,
15663 if (htab->glink_eh_frame != NULL
15664 && htab->glink_eh_frame->size != 0)
15668 struct map_stub *group;
15671 p = htab->glink_eh_frame->contents;
15672 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15674 for (group = htab->group; group != NULL; group = group->next)
15675 if (group->stub_sec != NULL)
15677 /* Offset to stub section. */
15678 val = (group->stub_sec->output_section->vma
15679 + group->stub_sec->output_offset);
15680 val -= (htab->glink_eh_frame->output_section->vma
15681 + htab->glink_eh_frame->output_offset
15682 + (p + 8 - htab->glink_eh_frame->contents));
15683 if (val + 0x80000000 > 0xffffffff)
15685 info->callbacks->einfo
15686 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15687 group->stub_sec->name);
15690 bfd_put_32 (dynobj, val, p + 8);
15691 p += stub_eh_frame_size (group, align);
15693 if (htab->glink != NULL && htab->glink->size != 0)
15695 /* Offset to .glink. */
15696 val = (htab->glink->output_section->vma
15697 + htab->glink->output_offset
15699 val -= (htab->glink_eh_frame->output_section->vma
15700 + htab->glink_eh_frame->output_offset
15701 + (p + 8 - htab->glink_eh_frame->contents));
15702 if (val + 0x80000000 > 0xffffffff)
15704 info->callbacks->einfo
15705 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15706 htab->glink->name);
15709 bfd_put_32 (dynobj, val, p + 8);
15710 p += (24 + align - 1) & -align;
15713 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15714 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15715 htab->glink_eh_frame,
15716 htab->glink_eh_frame->contents))
15720 /* We need to handle writing out multiple GOT sections ourselves,
15721 since we didn't add them to DYNOBJ. We know dynobj is the first
15723 while ((dynobj = dynobj->link.next) != NULL)
15727 if (!is_ppc64_elf (dynobj))
15730 s = ppc64_elf_tdata (dynobj)->got;
15733 && s->output_section != bfd_abs_section_ptr
15734 && !bfd_set_section_contents (output_bfd, s->output_section,
15735 s->contents, s->output_offset,
15738 s = ppc64_elf_tdata (dynobj)->relgot;
15741 && s->output_section != bfd_abs_section_ptr
15742 && !bfd_set_section_contents (output_bfd, s->output_section,
15743 s->contents, s->output_offset,
15751 #include "elf64-target.h"
15753 /* FreeBSD support */
15755 #undef TARGET_LITTLE_SYM
15756 #undef TARGET_LITTLE_NAME
15758 #undef TARGET_BIG_SYM
15759 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15760 #undef TARGET_BIG_NAME
15761 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15764 #define ELF_OSABI ELFOSABI_FREEBSD
15767 #define elf64_bed elf64_powerpc_fbsd_bed
15769 #include "elf64-target.h"