1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2018 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_PLTresolve stub instructions. We enter with the index in R0. */
191 #define GLINK_PLTRESOLVE_SIZE(htab) \
192 (8u + (htab->opd_abi ? 11 * 4 : 14 * 4))
196 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
197 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
199 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
200 /* ld %2,(0b-1b)(%11) */
201 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
202 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
208 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
209 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
210 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
211 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
212 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
215 #define NOP 0x60000000
217 /* Some other nops. */
218 #define CROR_151515 0x4def7b82
219 #define CROR_313131 0x4ffffb82
221 /* .glink entries for the first 32k functions are two instructions. */
222 #define LI_R0_0 0x38000000 /* li %r0,0 */
223 #define B_DOT 0x48000000 /* b . */
225 /* After that, we need two instructions to load the index, followed by
227 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
228 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
230 /* Instructions used by the save and restore reg functions. */
231 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
232 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
233 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
234 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
235 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
236 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
237 #define LI_R12_0 0x39800000 /* li %r12,0 */
238 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
239 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
240 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
241 #define BLR 0x4e800020 /* blr */
243 /* Since .opd is an array of descriptors and each entry will end up
244 with identical R_PPC64_RELATIVE relocs, there is really no need to
245 propagate .opd relocs; The dynamic linker should be taught to
246 relocate .opd without reloc entries. */
247 #ifndef NO_OPD_RELOCS
248 #define NO_OPD_RELOCS 0
252 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
256 abiversion (bfd
*abfd
)
258 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
262 set_abiversion (bfd
*abfd
, int ver
)
264 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
265 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
268 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
270 /* Relocation HOWTO's. */
271 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
273 static reloc_howto_type ppc64_elf_howto_raw
[] =
275 /* This reloc does nothing. */
276 HOWTO (R_PPC64_NONE
, /* type */
278 3, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE
, /* pc_relative */
282 complain_overflow_dont
, /* complain_on_overflow */
283 bfd_elf_generic_reloc
, /* special_function */
284 "R_PPC64_NONE", /* name */
285 FALSE
, /* partial_inplace */
288 FALSE
), /* pcrel_offset */
290 /* A standard 32 bit relocation. */
291 HOWTO (R_PPC64_ADDR32
, /* type */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE
, /* pc_relative */
297 complain_overflow_bitfield
, /* complain_on_overflow */
298 bfd_elf_generic_reloc
, /* special_function */
299 "R_PPC64_ADDR32", /* name */
300 FALSE
, /* partial_inplace */
302 0xffffffff, /* dst_mask */
303 FALSE
), /* pcrel_offset */
305 /* An absolute 26 bit branch; the lower two bits must be zero.
306 FIXME: we don't check that, we just clear them. */
307 HOWTO (R_PPC64_ADDR24
, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE
, /* pc_relative */
313 complain_overflow_bitfield
, /* complain_on_overflow */
314 bfd_elf_generic_reloc
, /* special_function */
315 "R_PPC64_ADDR24", /* name */
316 FALSE
, /* partial_inplace */
318 0x03fffffc, /* dst_mask */
319 FALSE
), /* pcrel_offset */
321 /* A standard 16 bit relocation. */
322 HOWTO (R_PPC64_ADDR16
, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_bitfield
, /* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_PPC64_ADDR16", /* name */
331 FALSE
, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 /* A 16 bit relocation without overflow. */
337 HOWTO (R_PPC64_ADDR16_LO
, /* type */
339 1, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE
, /* pc_relative */
343 complain_overflow_dont
,/* complain_on_overflow */
344 bfd_elf_generic_reloc
, /* special_function */
345 "R_PPC64_ADDR16_LO", /* name */
346 FALSE
, /* partial_inplace */
348 0xffff, /* dst_mask */
349 FALSE
), /* pcrel_offset */
351 /* Bits 16-31 of an address. */
352 HOWTO (R_PPC64_ADDR16_HI
, /* type */
354 1, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE
, /* pc_relative */
358 complain_overflow_signed
, /* complain_on_overflow */
359 bfd_elf_generic_reloc
, /* special_function */
360 "R_PPC64_ADDR16_HI", /* name */
361 FALSE
, /* partial_inplace */
363 0xffff, /* dst_mask */
364 FALSE
), /* pcrel_offset */
366 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
367 bits, treated as a signed number, is negative. */
368 HOWTO (R_PPC64_ADDR16_HA
, /* type */
370 1, /* size (0 = byte, 1 = short, 2 = long) */
372 FALSE
, /* pc_relative */
374 complain_overflow_signed
, /* complain_on_overflow */
375 ppc64_elf_ha_reloc
, /* special_function */
376 "R_PPC64_ADDR16_HA", /* name */
377 FALSE
, /* partial_inplace */
379 0xffff, /* dst_mask */
380 FALSE
), /* pcrel_offset */
382 /* An absolute 16 bit branch; the lower two bits must be zero.
383 FIXME: we don't check that, we just clear them. */
384 HOWTO (R_PPC64_ADDR14
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE
, /* pc_relative */
390 complain_overflow_signed
, /* complain_on_overflow */
391 ppc64_elf_branch_reloc
, /* special_function */
392 "R_PPC64_ADDR14", /* name */
393 FALSE
, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE
), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is expected to be taken. The lower two
400 bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_signed
, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc
, /* special_function */
409 "R_PPC64_ADDR14_BRTAKEN",/* name */
410 FALSE
, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE
), /* pcrel_offset */
415 /* An absolute 16 bit branch, for which bit 10 should be set to
416 indicate that the branch is not expected to be taken. The lower
417 two bits must be zero. */
418 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 FALSE
, /* pc_relative */
424 complain_overflow_signed
, /* complain_on_overflow */
425 ppc64_elf_brtaken_reloc
, /* special_function */
426 "R_PPC64_ADDR14_BRNTAKEN",/* name */
427 FALSE
, /* partial_inplace */
429 0x0000fffc, /* dst_mask */
430 FALSE
), /* pcrel_offset */
432 /* A relative 26 bit branch; the lower two bits must be zero. */
433 HOWTO (R_PPC64_REL24
, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_signed
, /* complain_on_overflow */
440 ppc64_elf_branch_reloc
, /* special_function */
441 "R_PPC64_REL24", /* name */
442 FALSE
, /* partial_inplace */
444 0x03fffffc, /* dst_mask */
445 TRUE
), /* pcrel_offset */
447 /* A relative 16 bit branch; the lower two bits must be zero. */
448 HOWTO (R_PPC64_REL14
, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE
, /* pc_relative */
454 complain_overflow_signed
, /* complain_on_overflow */
455 ppc64_elf_branch_reloc
, /* special_function */
456 "R_PPC64_REL14", /* name */
457 FALSE
, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE
), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is expected to be taken. The lower two bits must be
465 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE
, /* pc_relative */
471 complain_overflow_signed
, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc
, /* special_function */
473 "R_PPC64_REL14_BRTAKEN", /* name */
474 FALSE
, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE
), /* pcrel_offset */
479 /* A relative 16 bit branch. Bit 10 should be set to indicate that
480 the branch is not expected to be taken. The lower two bits must
482 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 TRUE
, /* pc_relative */
488 complain_overflow_signed
, /* complain_on_overflow */
489 ppc64_elf_brtaken_reloc
, /* special_function */
490 "R_PPC64_REL14_BRNTAKEN",/* name */
491 FALSE
, /* partial_inplace */
493 0x0000fffc, /* dst_mask */
494 TRUE
), /* pcrel_offset */
496 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
498 HOWTO (R_PPC64_GOT16
, /* type */
500 1, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE
, /* pc_relative */
504 complain_overflow_signed
, /* complain_on_overflow */
505 ppc64_elf_unhandled_reloc
, /* special_function */
506 "R_PPC64_GOT16", /* name */
507 FALSE
, /* partial_inplace */
509 0xffff, /* dst_mask */
510 FALSE
), /* pcrel_offset */
512 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
514 HOWTO (R_PPC64_GOT16_LO
, /* type */
516 1, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE
, /* pc_relative */
520 complain_overflow_dont
, /* complain_on_overflow */
521 ppc64_elf_unhandled_reloc
, /* special_function */
522 "R_PPC64_GOT16_LO", /* name */
523 FALSE
, /* partial_inplace */
525 0xffff, /* dst_mask */
526 FALSE
), /* pcrel_offset */
528 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
530 HOWTO (R_PPC64_GOT16_HI
, /* type */
532 1, /* size (0 = byte, 1 = short, 2 = long) */
534 FALSE
, /* pc_relative */
536 complain_overflow_signed
,/* complain_on_overflow */
537 ppc64_elf_unhandled_reloc
, /* special_function */
538 "R_PPC64_GOT16_HI", /* name */
539 FALSE
, /* partial_inplace */
541 0xffff, /* dst_mask */
542 FALSE
), /* pcrel_offset */
544 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
546 HOWTO (R_PPC64_GOT16_HA
, /* type */
548 1, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE
, /* pc_relative */
552 complain_overflow_signed
,/* complain_on_overflow */
553 ppc64_elf_unhandled_reloc
, /* special_function */
554 "R_PPC64_GOT16_HA", /* name */
555 FALSE
, /* partial_inplace */
557 0xffff, /* dst_mask */
558 FALSE
), /* pcrel_offset */
560 /* This is used only by the dynamic linker. The symbol should exist
561 both in the object being run and in some shared library. The
562 dynamic linker copies the data addressed by the symbol from the
563 shared library into the object, because the object being
564 run has to have the data at some particular address. */
565 HOWTO (R_PPC64_COPY
, /* type */
567 0, /* this one is variable size */
569 FALSE
, /* pc_relative */
571 complain_overflow_dont
, /* complain_on_overflow */
572 ppc64_elf_unhandled_reloc
, /* special_function */
573 "R_PPC64_COPY", /* name */
574 FALSE
, /* partial_inplace */
577 FALSE
), /* pcrel_offset */
579 /* Like R_PPC64_ADDR64, but used when setting global offset table
581 HOWTO (R_PPC64_GLOB_DAT
, /* type */
583 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
585 FALSE
, /* pc_relative */
587 complain_overflow_dont
, /* complain_on_overflow */
588 ppc64_elf_unhandled_reloc
, /* special_function */
589 "R_PPC64_GLOB_DAT", /* name */
590 FALSE
, /* partial_inplace */
592 ONES (64), /* dst_mask */
593 FALSE
), /* pcrel_offset */
595 /* Created by the link editor. Marks a procedure linkage table
596 entry for a symbol. */
597 HOWTO (R_PPC64_JMP_SLOT
, /* type */
599 0, /* size (0 = byte, 1 = short, 2 = long) */
601 FALSE
, /* pc_relative */
603 complain_overflow_dont
, /* complain_on_overflow */
604 ppc64_elf_unhandled_reloc
, /* special_function */
605 "R_PPC64_JMP_SLOT", /* name */
606 FALSE
, /* partial_inplace */
609 FALSE
), /* pcrel_offset */
611 /* Used only by the dynamic linker. When the object is run, this
612 doubleword64 is set to the load address of the object, plus the
614 HOWTO (R_PPC64_RELATIVE
, /* type */
616 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
618 FALSE
, /* pc_relative */
620 complain_overflow_dont
, /* complain_on_overflow */
621 bfd_elf_generic_reloc
, /* special_function */
622 "R_PPC64_RELATIVE", /* name */
623 FALSE
, /* partial_inplace */
625 ONES (64), /* dst_mask */
626 FALSE
), /* pcrel_offset */
628 /* Like R_PPC64_ADDR32, but may be unaligned. */
629 HOWTO (R_PPC64_UADDR32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_bitfield
, /* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_PPC64_UADDR32", /* name */
638 FALSE
, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 /* Like R_PPC64_ADDR16, but may be unaligned. */
644 HOWTO (R_PPC64_UADDR16
, /* type */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE
, /* pc_relative */
650 complain_overflow_bitfield
, /* complain_on_overflow */
651 bfd_elf_generic_reloc
, /* special_function */
652 "R_PPC64_UADDR16", /* name */
653 FALSE
, /* partial_inplace */
655 0xffff, /* dst_mask */
656 FALSE
), /* pcrel_offset */
658 /* 32-bit PC relative. */
659 HOWTO (R_PPC64_REL32
, /* type */
661 2, /* size (0 = byte, 1 = short, 2 = long) */
663 TRUE
, /* pc_relative */
665 complain_overflow_signed
, /* complain_on_overflow */
666 bfd_elf_generic_reloc
, /* special_function */
667 "R_PPC64_REL32", /* name */
668 FALSE
, /* partial_inplace */
670 0xffffffff, /* dst_mask */
671 TRUE
), /* pcrel_offset */
673 /* 32-bit relocation to the symbol's procedure linkage table. */
674 HOWTO (R_PPC64_PLT32
, /* type */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE
, /* pc_relative */
680 complain_overflow_bitfield
, /* complain_on_overflow */
681 ppc64_elf_unhandled_reloc
, /* special_function */
682 "R_PPC64_PLT32", /* name */
683 FALSE
, /* partial_inplace */
685 0xffffffff, /* dst_mask */
686 FALSE
), /* pcrel_offset */
688 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
689 FIXME: R_PPC64_PLTREL32 not supported. */
690 HOWTO (R_PPC64_PLTREL32
, /* type */
692 2, /* size (0 = byte, 1 = short, 2 = long) */
694 TRUE
, /* pc_relative */
696 complain_overflow_signed
, /* complain_on_overflow */
697 ppc64_elf_unhandled_reloc
, /* special_function */
698 "R_PPC64_PLTREL32", /* name */
699 FALSE
, /* partial_inplace */
701 0xffffffff, /* dst_mask */
702 TRUE
), /* pcrel_offset */
704 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
706 HOWTO (R_PPC64_PLT16_LO
, /* type */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
710 FALSE
, /* pc_relative */
712 complain_overflow_dont
, /* complain_on_overflow */
713 ppc64_elf_unhandled_reloc
, /* special_function */
714 "R_PPC64_PLT16_LO", /* name */
715 FALSE
, /* partial_inplace */
717 0xffff, /* dst_mask */
718 FALSE
), /* pcrel_offset */
720 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
722 HOWTO (R_PPC64_PLT16_HI
, /* type */
724 1, /* size (0 = byte, 1 = short, 2 = long) */
726 FALSE
, /* pc_relative */
728 complain_overflow_signed
, /* complain_on_overflow */
729 ppc64_elf_unhandled_reloc
, /* special_function */
730 "R_PPC64_PLT16_HI", /* name */
731 FALSE
, /* partial_inplace */
733 0xffff, /* dst_mask */
734 FALSE
), /* pcrel_offset */
736 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
738 HOWTO (R_PPC64_PLT16_HA
, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE
, /* pc_relative */
744 complain_overflow_signed
, /* complain_on_overflow */
745 ppc64_elf_unhandled_reloc
, /* special_function */
746 "R_PPC64_PLT16_HA", /* name */
747 FALSE
, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE
), /* pcrel_offset */
752 /* 16-bit section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF
, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE
, /* pc_relative */
759 complain_overflow_signed
, /* complain_on_overflow */
760 ppc64_elf_sectoff_reloc
, /* special_function */
761 "R_PPC64_SECTOFF", /* name */
762 FALSE
, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE
), /* pcrel_offset */
767 /* Like R_PPC64_SECTOFF, but no overflow warning. */
768 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
770 1, /* size (0 = byte, 1 = short, 2 = long) */
772 FALSE
, /* pc_relative */
774 complain_overflow_dont
, /* complain_on_overflow */
775 ppc64_elf_sectoff_reloc
, /* special_function */
776 "R_PPC64_SECTOFF_LO", /* name */
777 FALSE
, /* partial_inplace */
779 0xffff, /* dst_mask */
780 FALSE
), /* pcrel_offset */
782 /* 16-bit upper half section relative relocation. */
783 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
785 1, /* size (0 = byte, 1 = short, 2 = long) */
787 FALSE
, /* pc_relative */
789 complain_overflow_signed
, /* complain_on_overflow */
790 ppc64_elf_sectoff_reloc
, /* special_function */
791 "R_PPC64_SECTOFF_HI", /* name */
792 FALSE
, /* partial_inplace */
794 0xffff, /* dst_mask */
795 FALSE
), /* pcrel_offset */
797 /* 16-bit upper half adjusted section relative relocation. */
798 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE
, /* pc_relative */
804 complain_overflow_signed
, /* complain_on_overflow */
805 ppc64_elf_sectoff_ha_reloc
, /* special_function */
806 "R_PPC64_SECTOFF_HA", /* name */
807 FALSE
, /* partial_inplace */
809 0xffff, /* dst_mask */
810 FALSE
), /* pcrel_offset */
812 /* Like R_PPC64_REL24 without touching the two least significant bits. */
813 HOWTO (R_PPC64_REL30
, /* type */
815 2, /* size (0 = byte, 1 = short, 2 = long) */
817 TRUE
, /* pc_relative */
819 complain_overflow_dont
, /* complain_on_overflow */
820 bfd_elf_generic_reloc
, /* special_function */
821 "R_PPC64_REL30", /* name */
822 FALSE
, /* partial_inplace */
824 0xfffffffc, /* dst_mask */
825 TRUE
), /* pcrel_offset */
827 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
829 /* A standard 64-bit relocation. */
830 HOWTO (R_PPC64_ADDR64
, /* type */
832 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
834 FALSE
, /* pc_relative */
836 complain_overflow_dont
, /* complain_on_overflow */
837 bfd_elf_generic_reloc
, /* special_function */
838 "R_PPC64_ADDR64", /* name */
839 FALSE
, /* partial_inplace */
841 ONES (64), /* dst_mask */
842 FALSE
), /* pcrel_offset */
844 /* The bits 32-47 of an address. */
845 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
847 1, /* size (0 = byte, 1 = short, 2 = long) */
849 FALSE
, /* pc_relative */
851 complain_overflow_dont
, /* complain_on_overflow */
852 bfd_elf_generic_reloc
, /* special_function */
853 "R_PPC64_ADDR16_HIGHER", /* name */
854 FALSE
, /* partial_inplace */
856 0xffff, /* dst_mask */
857 FALSE
), /* pcrel_offset */
859 /* The bits 32-47 of an address, plus 1 if the contents of the low
860 16 bits, treated as a signed number, is negative. */
861 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
863 1, /* size (0 = byte, 1 = short, 2 = long) */
865 FALSE
, /* pc_relative */
867 complain_overflow_dont
, /* complain_on_overflow */
868 ppc64_elf_ha_reloc
, /* special_function */
869 "R_PPC64_ADDR16_HIGHERA", /* name */
870 FALSE
, /* partial_inplace */
872 0xffff, /* dst_mask */
873 FALSE
), /* pcrel_offset */
875 /* The bits 48-63 of an address. */
876 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
878 1, /* size (0 = byte, 1 = short, 2 = long) */
880 FALSE
, /* pc_relative */
882 complain_overflow_dont
, /* complain_on_overflow */
883 bfd_elf_generic_reloc
, /* special_function */
884 "R_PPC64_ADDR16_HIGHEST", /* name */
885 FALSE
, /* partial_inplace */
887 0xffff, /* dst_mask */
888 FALSE
), /* pcrel_offset */
890 /* The bits 48-63 of an address, plus 1 if the contents of the low
891 16 bits, treated as a signed number, is negative. */
892 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
894 1, /* size (0 = byte, 1 = short, 2 = long) */
896 FALSE
, /* pc_relative */
898 complain_overflow_dont
, /* complain_on_overflow */
899 ppc64_elf_ha_reloc
, /* special_function */
900 "R_PPC64_ADDR16_HIGHESTA", /* name */
901 FALSE
, /* partial_inplace */
903 0xffff, /* dst_mask */
904 FALSE
), /* pcrel_offset */
906 /* Like ADDR64, but may be unaligned. */
907 HOWTO (R_PPC64_UADDR64
, /* type */
909 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
911 FALSE
, /* pc_relative */
913 complain_overflow_dont
, /* complain_on_overflow */
914 bfd_elf_generic_reloc
, /* special_function */
915 "R_PPC64_UADDR64", /* name */
916 FALSE
, /* partial_inplace */
918 ONES (64), /* dst_mask */
919 FALSE
), /* pcrel_offset */
921 /* 64-bit relative relocation. */
922 HOWTO (R_PPC64_REL64
, /* type */
924 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
926 TRUE
, /* pc_relative */
928 complain_overflow_dont
, /* complain_on_overflow */
929 bfd_elf_generic_reloc
, /* special_function */
930 "R_PPC64_REL64", /* name */
931 FALSE
, /* partial_inplace */
933 ONES (64), /* dst_mask */
934 TRUE
), /* pcrel_offset */
936 /* 64-bit relocation to the symbol's procedure linkage table. */
937 HOWTO (R_PPC64_PLT64
, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 FALSE
, /* pc_relative */
943 complain_overflow_dont
, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc
, /* special_function */
945 "R_PPC64_PLT64", /* name */
946 FALSE
, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 FALSE
), /* pcrel_offset */
951 /* 64-bit PC relative relocation to the symbol's procedure linkage
953 /* FIXME: R_PPC64_PLTREL64 not supported. */
954 HOWTO (R_PPC64_PLTREL64
, /* type */
956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
958 TRUE
, /* pc_relative */
960 complain_overflow_dont
, /* complain_on_overflow */
961 ppc64_elf_unhandled_reloc
, /* special_function */
962 "R_PPC64_PLTREL64", /* name */
963 FALSE
, /* partial_inplace */
965 ONES (64), /* dst_mask */
966 TRUE
), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation. */
970 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
971 HOWTO (R_PPC64_TOC16
, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_signed
, /* complain_on_overflow */
978 ppc64_elf_toc_reloc
, /* special_function */
979 "R_PPC64_TOC16", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation without overflow. */
987 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_LO
, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE
, /* pc_relative */
994 complain_overflow_dont
, /* complain_on_overflow */
995 ppc64_elf_toc_reloc
, /* special_function */
996 "R_PPC64_TOC16_LO", /* name */
997 FALSE
, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits. */
1004 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1005 HOWTO (R_PPC64_TOC16_HI
, /* type */
1006 16, /* rightshift */
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE
, /* pc_relative */
1011 complain_overflow_signed
, /* complain_on_overflow */
1012 ppc64_elf_toc_reloc
, /* special_function */
1013 "R_PPC64_TOC16_HI", /* name */
1014 FALSE
, /* partial_inplace */
1016 0xffff, /* dst_mask */
1017 FALSE
), /* pcrel_offset */
1019 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1020 contents of the low 16 bits, treated as a signed number, is
1023 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1024 HOWTO (R_PPC64_TOC16_HA
, /* type */
1025 16, /* rightshift */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE
, /* pc_relative */
1030 complain_overflow_signed
, /* complain_on_overflow */
1031 ppc64_elf_toc_ha_reloc
, /* special_function */
1032 "R_PPC64_TOC16_HA", /* name */
1033 FALSE
, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE
), /* pcrel_offset */
1038 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1040 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1041 HOWTO (R_PPC64_TOC
, /* type */
1043 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1045 FALSE
, /* pc_relative */
1047 complain_overflow_dont
, /* complain_on_overflow */
1048 ppc64_elf_toc64_reloc
, /* special_function */
1049 "R_PPC64_TOC", /* name */
1050 FALSE
, /* partial_inplace */
1052 ONES (64), /* dst_mask */
1053 FALSE
), /* pcrel_offset */
1055 /* Like R_PPC64_GOT16, but also informs the link editor that the
1056 value to relocate may (!) refer to a PLT entry which the link
1057 editor (a) may replace with the symbol value. If the link editor
1058 is unable to fully resolve the symbol, it may (b) create a PLT
1059 entry and store the address to the new PLT entry in the GOT.
1060 This permits lazy resolution of function symbols at run time.
1061 The link editor may also skip all of this and just (c) emit a
1062 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1063 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1064 HOWTO (R_PPC64_PLTGOT16
, /* type */
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 FALSE
, /* pc_relative */
1070 complain_overflow_signed
, /* complain_on_overflow */
1071 ppc64_elf_unhandled_reloc
, /* special_function */
1072 "R_PPC64_PLTGOT16", /* name */
1073 FALSE
, /* partial_inplace */
1075 0xffff, /* dst_mask */
1076 FALSE
), /* pcrel_offset */
1078 /* Like R_PPC64_PLTGOT16, but without overflow. */
1079 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1080 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE
, /* pc_relative */
1086 complain_overflow_dont
, /* complain_on_overflow */
1087 ppc64_elf_unhandled_reloc
, /* special_function */
1088 "R_PPC64_PLTGOT16_LO", /* name */
1089 FALSE
, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE
), /* pcrel_offset */
1094 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1095 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1096 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE
, /* pc_relative */
1102 complain_overflow_signed
, /* complain_on_overflow */
1103 ppc64_elf_unhandled_reloc
, /* special_function */
1104 "R_PPC64_PLTGOT16_HI", /* name */
1105 FALSE
, /* partial_inplace */
1107 0xffff, /* dst_mask */
1108 FALSE
), /* pcrel_offset */
1110 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1111 1 if the contents of the low 16 bits, treated as a signed number,
1113 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1114 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1115 16, /* rightshift */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE
, /* pc_relative */
1120 complain_overflow_signed
, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc
, /* special_function */
1122 "R_PPC64_PLTGOT16_HA", /* name */
1123 FALSE
, /* partial_inplace */
1125 0xffff, /* dst_mask */
1126 FALSE
), /* pcrel_offset */
1128 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE
, /* pc_relative */
1135 complain_overflow_signed
, /* complain_on_overflow */
1136 bfd_elf_generic_reloc
, /* special_function */
1137 "R_PPC64_ADDR16_DS", /* name */
1138 FALSE
, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE
), /* pcrel_offset */
1143 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE
, /* pc_relative */
1150 complain_overflow_dont
,/* complain_on_overflow */
1151 bfd_elf_generic_reloc
, /* special_function */
1152 "R_PPC64_ADDR16_LO_DS",/* name */
1153 FALSE
, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE
), /* pcrel_offset */
1158 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_GOT16_DS
, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE
, /* pc_relative */
1165 complain_overflow_signed
, /* complain_on_overflow */
1166 ppc64_elf_unhandled_reloc
, /* special_function */
1167 "R_PPC64_GOT16_DS", /* name */
1168 FALSE
, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE
), /* pcrel_offset */
1173 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE
, /* pc_relative */
1180 complain_overflow_dont
, /* complain_on_overflow */
1181 ppc64_elf_unhandled_reloc
, /* special_function */
1182 "R_PPC64_GOT16_LO_DS", /* name */
1183 FALSE
, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE
), /* pcrel_offset */
1188 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE
, /* pc_relative */
1195 complain_overflow_dont
, /* complain_on_overflow */
1196 ppc64_elf_unhandled_reloc
, /* special_function */
1197 "R_PPC64_PLT16_LO_DS", /* name */
1198 FALSE
, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE
), /* pcrel_offset */
1203 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE
, /* pc_relative */
1210 complain_overflow_signed
, /* complain_on_overflow */
1211 ppc64_elf_sectoff_reloc
, /* special_function */
1212 "R_PPC64_SECTOFF_DS", /* name */
1213 FALSE
, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE
), /* pcrel_offset */
1218 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1219 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 FALSE
, /* pc_relative */
1225 complain_overflow_dont
, /* complain_on_overflow */
1226 ppc64_elf_sectoff_reloc
, /* special_function */
1227 "R_PPC64_SECTOFF_LO_DS",/* name */
1228 FALSE
, /* partial_inplace */
1230 0xfffc, /* dst_mask */
1231 FALSE
), /* pcrel_offset */
1233 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1234 HOWTO (R_PPC64_TOC16_DS
, /* type */
1236 1, /* size (0 = byte, 1 = short, 2 = long) */
1238 FALSE
, /* pc_relative */
1240 complain_overflow_signed
, /* complain_on_overflow */
1241 ppc64_elf_toc_reloc
, /* special_function */
1242 "R_PPC64_TOC16_DS", /* name */
1243 FALSE
, /* partial_inplace */
1245 0xfffc, /* dst_mask */
1246 FALSE
), /* pcrel_offset */
1248 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1249 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE
, /* pc_relative */
1255 complain_overflow_dont
, /* complain_on_overflow */
1256 ppc64_elf_toc_reloc
, /* special_function */
1257 "R_PPC64_TOC16_LO_DS", /* name */
1258 FALSE
, /* partial_inplace */
1260 0xfffc, /* dst_mask */
1261 FALSE
), /* pcrel_offset */
1263 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1264 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1265 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE
, /* pc_relative */
1271 complain_overflow_signed
, /* complain_on_overflow */
1272 ppc64_elf_unhandled_reloc
, /* special_function */
1273 "R_PPC64_PLTGOT16_DS", /* name */
1274 FALSE
, /* partial_inplace */
1276 0xfffc, /* dst_mask */
1277 FALSE
), /* pcrel_offset */
1279 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1280 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1281 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1283 1, /* size (0 = byte, 1 = short, 2 = long) */
1285 FALSE
, /* pc_relative */
1287 complain_overflow_dont
, /* complain_on_overflow */
1288 ppc64_elf_unhandled_reloc
, /* special_function */
1289 "R_PPC64_PLTGOT16_LO_DS",/* name */
1290 FALSE
, /* partial_inplace */
1292 0xfffc, /* dst_mask */
1293 FALSE
), /* pcrel_offset */
1295 /* Marker relocs for TLS. */
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 bfd_elf_generic_reloc
, /* special_function */
1304 "R_PPC64_TLS", /* name */
1305 FALSE
, /* partial_inplace */
1308 FALSE
), /* pcrel_offset */
1310 HOWTO (R_PPC64_TLSGD
,
1312 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 FALSE
, /* pc_relative */
1316 complain_overflow_dont
, /* complain_on_overflow */
1317 bfd_elf_generic_reloc
, /* special_function */
1318 "R_PPC64_TLSGD", /* name */
1319 FALSE
, /* partial_inplace */
1322 FALSE
), /* pcrel_offset */
1324 HOWTO (R_PPC64_TLSLD
,
1326 2, /* size (0 = byte, 1 = short, 2 = long) */
1328 FALSE
, /* pc_relative */
1330 complain_overflow_dont
, /* complain_on_overflow */
1331 bfd_elf_generic_reloc
, /* special_function */
1332 "R_PPC64_TLSLD", /* name */
1333 FALSE
, /* partial_inplace */
1336 FALSE
), /* pcrel_offset */
1338 HOWTO (R_PPC64_TOCSAVE
,
1340 2, /* size (0 = byte, 1 = short, 2 = long) */
1342 FALSE
, /* pc_relative */
1344 complain_overflow_dont
, /* complain_on_overflow */
1345 bfd_elf_generic_reloc
, /* special_function */
1346 "R_PPC64_TOCSAVE", /* name */
1347 FALSE
, /* partial_inplace */
1350 FALSE
), /* pcrel_offset */
1352 /* Computes the load module index of the load module that contains the
1353 definition of its TLS sym. */
1354 HOWTO (R_PPC64_DTPMOD64
,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE
, /* pc_relative */
1360 complain_overflow_dont
, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc
, /* special_function */
1362 "R_PPC64_DTPMOD64", /* name */
1363 FALSE
, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE
), /* pcrel_offset */
1368 /* Computes a dtv-relative displacement, the difference between the value
1369 of sym+add and the base address of the thread-local storage block that
1370 contains the definition of sym, minus 0x8000. */
1371 HOWTO (R_PPC64_DTPREL64
,
1373 4, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc
, /* special_function */
1379 "R_PPC64_DTPREL64", /* name */
1380 FALSE
, /* partial_inplace */
1382 ONES (64), /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* A 16 bit dtprel reloc. */
1386 HOWTO (R_PPC64_DTPREL16
,
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE
, /* pc_relative */
1392 complain_overflow_signed
, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc
, /* special_function */
1394 "R_PPC64_DTPREL16", /* name */
1395 FALSE
, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE
), /* pcrel_offset */
1400 /* Like DTPREL16, but no overflow. */
1401 HOWTO (R_PPC64_DTPREL16_LO
,
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_dont
, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc
, /* special_function */
1409 "R_PPC64_DTPREL16_LO", /* name */
1410 FALSE
, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HI
,
1417 16, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE
, /* pc_relative */
1422 complain_overflow_signed
, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc
, /* special_function */
1424 "R_PPC64_DTPREL16_HI", /* name */
1425 FALSE
, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE
), /* pcrel_offset */
1430 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HA
,
1432 16, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE
, /* pc_relative */
1437 complain_overflow_signed
, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc
, /* special_function */
1439 "R_PPC64_DTPREL16_HA", /* name */
1440 FALSE
, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE
), /* pcrel_offset */
1445 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1447 32, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE
, /* pc_relative */
1452 complain_overflow_dont
, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc
, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHER", /* name */
1455 FALSE
, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE
), /* pcrel_offset */
1460 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1461 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1462 32, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE
, /* pc_relative */
1467 complain_overflow_dont
, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc
, /* special_function */
1469 "R_PPC64_DTPREL16_HIGHERA", /* name */
1470 FALSE
, /* partial_inplace */
1472 0xffff, /* dst_mask */
1473 FALSE
), /* pcrel_offset */
1475 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1476 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1477 48, /* rightshift */
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE
, /* pc_relative */
1482 complain_overflow_dont
, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc
, /* special_function */
1484 "R_PPC64_DTPREL16_HIGHEST", /* name */
1485 FALSE
, /* partial_inplace */
1487 0xffff, /* dst_mask */
1488 FALSE
), /* pcrel_offset */
1490 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1491 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1492 48, /* rightshift */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE
, /* pc_relative */
1497 complain_overflow_dont
, /* complain_on_overflow */
1498 ppc64_elf_unhandled_reloc
, /* special_function */
1499 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1500 FALSE
, /* partial_inplace */
1502 0xffff, /* dst_mask */
1503 FALSE
), /* pcrel_offset */
1505 /* Like DTPREL16, but for insns with a DS field. */
1506 HOWTO (R_PPC64_DTPREL16_DS
,
1508 1, /* size (0 = byte, 1 = short, 2 = long) */
1510 FALSE
, /* pc_relative */
1512 complain_overflow_signed
, /* complain_on_overflow */
1513 ppc64_elf_unhandled_reloc
, /* special_function */
1514 "R_PPC64_DTPREL16_DS", /* name */
1515 FALSE
, /* partial_inplace */
1517 0xfffc, /* dst_mask */
1518 FALSE
), /* pcrel_offset */
1520 /* Like DTPREL16_DS, but no overflow. */
1521 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1523 1, /* size (0 = byte, 1 = short, 2 = long) */
1525 FALSE
, /* pc_relative */
1527 complain_overflow_dont
, /* complain_on_overflow */
1528 ppc64_elf_unhandled_reloc
, /* special_function */
1529 "R_PPC64_DTPREL16_LO_DS", /* name */
1530 FALSE
, /* partial_inplace */
1532 0xfffc, /* dst_mask */
1533 FALSE
), /* pcrel_offset */
1535 /* Computes a tp-relative displacement, the difference between the value of
1536 sym+add and the value of the thread pointer (r13). */
1537 HOWTO (R_PPC64_TPREL64
,
1539 4, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE
, /* pc_relative */
1543 complain_overflow_dont
, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc
, /* special_function */
1545 "R_PPC64_TPREL64", /* name */
1546 FALSE
, /* partial_inplace */
1548 ONES (64), /* dst_mask */
1549 FALSE
), /* pcrel_offset */
1551 /* A 16 bit tprel reloc. */
1552 HOWTO (R_PPC64_TPREL16
,
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE
, /* pc_relative */
1558 complain_overflow_signed
, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc
, /* special_function */
1560 "R_PPC64_TPREL16", /* name */
1561 FALSE
, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE
), /* pcrel_offset */
1566 /* Like TPREL16, but no overflow. */
1567 HOWTO (R_PPC64_TPREL16_LO
,
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE
, /* pc_relative */
1573 complain_overflow_dont
, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc
, /* special_function */
1575 "R_PPC64_TPREL16_LO", /* name */
1576 FALSE
, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE
), /* pcrel_offset */
1581 /* Like TPREL16_LO, but next higher group of 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HI
,
1583 16, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE
, /* pc_relative */
1588 complain_overflow_signed
, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc
, /* special_function */
1590 "R_PPC64_TPREL16_HI", /* name */
1591 FALSE
, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE
), /* pcrel_offset */
1596 /* Like TPREL16_HI, but adjust for low 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HA
,
1598 16, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE
, /* pc_relative */
1603 complain_overflow_signed
, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc
, /* special_function */
1605 "R_PPC64_TPREL16_HA", /* name */
1606 FALSE
, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE
), /* pcrel_offset */
1611 /* Like TPREL16_HI, but next higher group of 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHER
,
1613 32, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE
, /* pc_relative */
1618 complain_overflow_dont
, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc
, /* special_function */
1620 "R_PPC64_TPREL16_HIGHER", /* name */
1621 FALSE
, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE
), /* pcrel_offset */
1626 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1627 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1628 32, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE
, /* pc_relative */
1633 complain_overflow_dont
, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc
, /* special_function */
1635 "R_PPC64_TPREL16_HIGHERA", /* name */
1636 FALSE
, /* partial_inplace */
1638 0xffff, /* dst_mask */
1639 FALSE
), /* pcrel_offset */
1641 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1642 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1643 48, /* rightshift */
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE
, /* pc_relative */
1648 complain_overflow_dont
, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc
, /* special_function */
1650 "R_PPC64_TPREL16_HIGHEST", /* name */
1651 FALSE
, /* partial_inplace */
1653 0xffff, /* dst_mask */
1654 FALSE
), /* pcrel_offset */
1656 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1657 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1658 48, /* rightshift */
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1661 FALSE
, /* pc_relative */
1663 complain_overflow_dont
, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc
, /* special_function */
1665 "R_PPC64_TPREL16_HIGHESTA", /* name */
1666 FALSE
, /* partial_inplace */
1668 0xffff, /* dst_mask */
1669 FALSE
), /* pcrel_offset */
1671 /* Like TPREL16, but for insns with a DS field. */
1672 HOWTO (R_PPC64_TPREL16_DS
,
1674 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 FALSE
, /* pc_relative */
1678 complain_overflow_signed
, /* complain_on_overflow */
1679 ppc64_elf_unhandled_reloc
, /* special_function */
1680 "R_PPC64_TPREL16_DS", /* name */
1681 FALSE
, /* partial_inplace */
1683 0xfffc, /* dst_mask */
1684 FALSE
), /* pcrel_offset */
1686 /* Like TPREL16_DS, but no overflow. */
1687 HOWTO (R_PPC64_TPREL16_LO_DS
,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE
, /* pc_relative */
1693 complain_overflow_dont
, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc
, /* special_function */
1695 "R_PPC64_TPREL16_LO_DS", /* name */
1696 FALSE
, /* partial_inplace */
1698 0xfffc, /* dst_mask */
1699 FALSE
), /* pcrel_offset */
1701 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1702 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1703 to the first entry relative to the TOC base (r2). */
1704 HOWTO (R_PPC64_GOT_TLSGD16
,
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE
, /* pc_relative */
1710 complain_overflow_signed
, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc
, /* special_function */
1712 "R_PPC64_GOT_TLSGD16", /* name */
1713 FALSE
, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE
), /* pcrel_offset */
1718 /* Like GOT_TLSGD16, but no overflow. */
1719 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 FALSE
, /* pc_relative */
1725 complain_overflow_dont
, /* complain_on_overflow */
1726 ppc64_elf_unhandled_reloc
, /* special_function */
1727 "R_PPC64_GOT_TLSGD16_LO", /* name */
1728 FALSE
, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 FALSE
), /* pcrel_offset */
1733 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1734 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1735 16, /* rightshift */
1736 1, /* size (0 = byte, 1 = short, 2 = long) */
1738 FALSE
, /* pc_relative */
1740 complain_overflow_signed
, /* complain_on_overflow */
1741 ppc64_elf_unhandled_reloc
, /* special_function */
1742 "R_PPC64_GOT_TLSGD16_HI", /* name */
1743 FALSE
, /* partial_inplace */
1745 0xffff, /* dst_mask */
1746 FALSE
), /* pcrel_offset */
1748 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1749 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1750 16, /* rightshift */
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE
, /* pc_relative */
1755 complain_overflow_signed
, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc
, /* special_function */
1757 "R_PPC64_GOT_TLSGD16_HA", /* name */
1758 FALSE
, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE
), /* pcrel_offset */
1763 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1764 with values (sym+add)@dtpmod and zero, and computes the offset to the
1765 first entry relative to the TOC base (r2). */
1766 HOWTO (R_PPC64_GOT_TLSLD16
,
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE
, /* pc_relative */
1772 complain_overflow_signed
, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc
, /* special_function */
1774 "R_PPC64_GOT_TLSLD16", /* name */
1775 FALSE
, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE
), /* pcrel_offset */
1780 /* Like GOT_TLSLD16, but no overflow. */
1781 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1785 FALSE
, /* pc_relative */
1787 complain_overflow_dont
, /* complain_on_overflow */
1788 ppc64_elf_unhandled_reloc
, /* special_function */
1789 "R_PPC64_GOT_TLSLD16_LO", /* name */
1790 FALSE
, /* partial_inplace */
1792 0xffff, /* dst_mask */
1793 FALSE
), /* pcrel_offset */
1795 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1796 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1797 16, /* rightshift */
1798 1, /* size (0 = byte, 1 = short, 2 = long) */
1800 FALSE
, /* pc_relative */
1802 complain_overflow_signed
, /* complain_on_overflow */
1803 ppc64_elf_unhandled_reloc
, /* special_function */
1804 "R_PPC64_GOT_TLSLD16_HI", /* name */
1805 FALSE
, /* partial_inplace */
1807 0xffff, /* dst_mask */
1808 FALSE
), /* pcrel_offset */
1810 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1811 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1812 16, /* rightshift */
1813 1, /* size (0 = byte, 1 = short, 2 = long) */
1815 FALSE
, /* pc_relative */
1817 complain_overflow_signed
, /* complain_on_overflow */
1818 ppc64_elf_unhandled_reloc
, /* special_function */
1819 "R_PPC64_GOT_TLSLD16_HA", /* name */
1820 FALSE
, /* partial_inplace */
1822 0xffff, /* dst_mask */
1823 FALSE
), /* pcrel_offset */
1825 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1826 the offset to the entry relative to the TOC base (r2). */
1827 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE
, /* pc_relative */
1833 complain_overflow_signed
, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc
, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_DS", /* name */
1836 FALSE
, /* partial_inplace */
1838 0xfffc, /* dst_mask */
1839 FALSE
), /* pcrel_offset */
1841 /* Like GOT_DTPREL16_DS, but no overflow. */
1842 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1844 1, /* size (0 = byte, 1 = short, 2 = long) */
1846 FALSE
, /* pc_relative */
1848 complain_overflow_dont
, /* complain_on_overflow */
1849 ppc64_elf_unhandled_reloc
, /* special_function */
1850 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1851 FALSE
, /* partial_inplace */
1853 0xfffc, /* dst_mask */
1854 FALSE
), /* pcrel_offset */
1856 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1857 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1858 16, /* rightshift */
1859 1, /* size (0 = byte, 1 = short, 2 = long) */
1861 FALSE
, /* pc_relative */
1863 complain_overflow_signed
, /* complain_on_overflow */
1864 ppc64_elf_unhandled_reloc
, /* special_function */
1865 "R_PPC64_GOT_DTPREL16_HI", /* name */
1866 FALSE
, /* partial_inplace */
1868 0xffff, /* dst_mask */
1869 FALSE
), /* pcrel_offset */
1871 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1872 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1873 16, /* rightshift */
1874 1, /* size (0 = byte, 1 = short, 2 = long) */
1876 FALSE
, /* pc_relative */
1878 complain_overflow_signed
, /* complain_on_overflow */
1879 ppc64_elf_unhandled_reloc
, /* special_function */
1880 "R_PPC64_GOT_DTPREL16_HA", /* name */
1881 FALSE
, /* partial_inplace */
1883 0xffff, /* dst_mask */
1884 FALSE
), /* pcrel_offset */
1886 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1887 offset to the entry relative to the TOC base (r2). */
1888 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE
, /* pc_relative */
1894 complain_overflow_signed
, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc
, /* special_function */
1896 "R_PPC64_GOT_TPREL16_DS", /* name */
1897 FALSE
, /* partial_inplace */
1899 0xfffc, /* dst_mask */
1900 FALSE
), /* pcrel_offset */
1902 /* Like GOT_TPREL16_DS, but no overflow. */
1903 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1905 1, /* size (0 = byte, 1 = short, 2 = long) */
1907 FALSE
, /* pc_relative */
1909 complain_overflow_dont
, /* complain_on_overflow */
1910 ppc64_elf_unhandled_reloc
, /* special_function */
1911 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1912 FALSE
, /* partial_inplace */
1914 0xfffc, /* dst_mask */
1915 FALSE
), /* pcrel_offset */
1917 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1918 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1919 16, /* rightshift */
1920 1, /* size (0 = byte, 1 = short, 2 = long) */
1922 FALSE
, /* pc_relative */
1924 complain_overflow_signed
, /* complain_on_overflow */
1925 ppc64_elf_unhandled_reloc
, /* special_function */
1926 "R_PPC64_GOT_TPREL16_HI", /* name */
1927 FALSE
, /* partial_inplace */
1929 0xffff, /* dst_mask */
1930 FALSE
), /* pcrel_offset */
1932 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1933 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1934 16, /* rightshift */
1935 1, /* size (0 = byte, 1 = short, 2 = long) */
1937 FALSE
, /* pc_relative */
1939 complain_overflow_signed
, /* complain_on_overflow */
1940 ppc64_elf_unhandled_reloc
, /* special_function */
1941 "R_PPC64_GOT_TPREL16_HA", /* name */
1942 FALSE
, /* partial_inplace */
1944 0xffff, /* dst_mask */
1945 FALSE
), /* pcrel_offset */
1947 HOWTO (R_PPC64_JMP_IREL
, /* type */
1949 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1951 FALSE
, /* pc_relative */
1953 complain_overflow_dont
, /* complain_on_overflow */
1954 ppc64_elf_unhandled_reloc
, /* special_function */
1955 "R_PPC64_JMP_IREL", /* name */
1956 FALSE
, /* partial_inplace */
1959 FALSE
), /* pcrel_offset */
1961 HOWTO (R_PPC64_IRELATIVE
, /* type */
1963 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1965 FALSE
, /* pc_relative */
1967 complain_overflow_dont
, /* complain_on_overflow */
1968 bfd_elf_generic_reloc
, /* special_function */
1969 "R_PPC64_IRELATIVE", /* name */
1970 FALSE
, /* partial_inplace */
1972 ONES (64), /* dst_mask */
1973 FALSE
), /* pcrel_offset */
1975 /* A 16 bit relative relocation. */
1976 HOWTO (R_PPC64_REL16
, /* type */
1978 1, /* size (0 = byte, 1 = short, 2 = long) */
1980 TRUE
, /* pc_relative */
1982 complain_overflow_signed
, /* complain_on_overflow */
1983 bfd_elf_generic_reloc
, /* special_function */
1984 "R_PPC64_REL16", /* name */
1985 FALSE
, /* partial_inplace */
1987 0xffff, /* dst_mask */
1988 TRUE
), /* pcrel_offset */
1990 /* A 16 bit relative relocation without overflow. */
1991 HOWTO (R_PPC64_REL16_LO
, /* type */
1993 1, /* size (0 = byte, 1 = short, 2 = long) */
1995 TRUE
, /* pc_relative */
1997 complain_overflow_dont
,/* complain_on_overflow */
1998 bfd_elf_generic_reloc
, /* special_function */
1999 "R_PPC64_REL16_LO", /* name */
2000 FALSE
, /* partial_inplace */
2002 0xffff, /* dst_mask */
2003 TRUE
), /* pcrel_offset */
2005 /* The high order 16 bits of a relative address. */
2006 HOWTO (R_PPC64_REL16_HI
, /* type */
2007 16, /* rightshift */
2008 1, /* size (0 = byte, 1 = short, 2 = long) */
2010 TRUE
, /* pc_relative */
2012 complain_overflow_signed
, /* complain_on_overflow */
2013 bfd_elf_generic_reloc
, /* special_function */
2014 "R_PPC64_REL16_HI", /* name */
2015 FALSE
, /* partial_inplace */
2017 0xffff, /* dst_mask */
2018 TRUE
), /* pcrel_offset */
2020 /* The high order 16 bits of a relative address, plus 1 if the contents of
2021 the low 16 bits, treated as a signed number, is negative. */
2022 HOWTO (R_PPC64_REL16_HA
, /* type */
2023 16, /* rightshift */
2024 1, /* size (0 = byte, 1 = short, 2 = long) */
2026 TRUE
, /* pc_relative */
2028 complain_overflow_signed
, /* complain_on_overflow */
2029 ppc64_elf_ha_reloc
, /* special_function */
2030 "R_PPC64_REL16_HA", /* name */
2031 FALSE
, /* partial_inplace */
2033 0xffff, /* dst_mask */
2034 TRUE
), /* pcrel_offset */
2036 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2037 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2038 16, /* rightshift */
2039 2, /* size (0 = byte, 1 = short, 2 = long) */
2041 TRUE
, /* pc_relative */
2043 complain_overflow_signed
, /* complain_on_overflow */
2044 ppc64_elf_ha_reloc
, /* special_function */
2045 "R_PPC64_REL16DX_HA", /* name */
2046 FALSE
, /* partial_inplace */
2048 0x1fffc1, /* dst_mask */
2049 TRUE
), /* pcrel_offset */
2051 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2052 HOWTO (R_PPC64_16DX_HA
, /* type */
2053 16, /* rightshift */
2054 2, /* size (0 = byte, 1 = short, 2 = long) */
2056 FALSE
, /* pc_relative */
2058 complain_overflow_signed
, /* complain_on_overflow */
2059 ppc64_elf_ha_reloc
, /* special_function */
2060 "R_PPC64_16DX_HA", /* name */
2061 FALSE
, /* partial_inplace */
2063 0x1fffc1, /* dst_mask */
2064 FALSE
), /* pcrel_offset */
2066 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2067 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2068 16, /* rightshift */
2069 1, /* size (0 = byte, 1 = short, 2 = long) */
2071 FALSE
, /* pc_relative */
2073 complain_overflow_dont
, /* complain_on_overflow */
2074 bfd_elf_generic_reloc
, /* special_function */
2075 "R_PPC64_ADDR16_HIGH", /* name */
2076 FALSE
, /* partial_inplace */
2078 0xffff, /* dst_mask */
2079 FALSE
), /* pcrel_offset */
2081 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2082 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2083 16, /* rightshift */
2084 1, /* size (0 = byte, 1 = short, 2 = long) */
2086 FALSE
, /* pc_relative */
2088 complain_overflow_dont
, /* complain_on_overflow */
2089 ppc64_elf_ha_reloc
, /* special_function */
2090 "R_PPC64_ADDR16_HIGHA", /* name */
2091 FALSE
, /* partial_inplace */
2093 0xffff, /* dst_mask */
2094 FALSE
), /* pcrel_offset */
2096 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2097 HOWTO (R_PPC64_DTPREL16_HIGH
,
2098 16, /* rightshift */
2099 1, /* size (0 = byte, 1 = short, 2 = long) */
2101 FALSE
, /* pc_relative */
2103 complain_overflow_dont
, /* complain_on_overflow */
2104 ppc64_elf_unhandled_reloc
, /* special_function */
2105 "R_PPC64_DTPREL16_HIGH", /* name */
2106 FALSE
, /* partial_inplace */
2108 0xffff, /* dst_mask */
2109 FALSE
), /* pcrel_offset */
2111 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2112 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2113 16, /* rightshift */
2114 1, /* size (0 = byte, 1 = short, 2 = long) */
2116 FALSE
, /* pc_relative */
2118 complain_overflow_dont
, /* complain_on_overflow */
2119 ppc64_elf_unhandled_reloc
, /* special_function */
2120 "R_PPC64_DTPREL16_HIGHA", /* name */
2121 FALSE
, /* partial_inplace */
2123 0xffff, /* dst_mask */
2124 FALSE
), /* pcrel_offset */
2126 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2127 HOWTO (R_PPC64_TPREL16_HIGH
,
2128 16, /* rightshift */
2129 1, /* size (0 = byte, 1 = short, 2 = long) */
2131 FALSE
, /* pc_relative */
2133 complain_overflow_dont
, /* complain_on_overflow */
2134 ppc64_elf_unhandled_reloc
, /* special_function */
2135 "R_PPC64_TPREL16_HIGH", /* name */
2136 FALSE
, /* partial_inplace */
2138 0xffff, /* dst_mask */
2139 FALSE
), /* pcrel_offset */
2141 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2142 HOWTO (R_PPC64_TPREL16_HIGHA
,
2143 16, /* rightshift */
2144 1, /* size (0 = byte, 1 = short, 2 = long) */
2146 FALSE
, /* pc_relative */
2148 complain_overflow_dont
, /* complain_on_overflow */
2149 ppc64_elf_unhandled_reloc
, /* special_function */
2150 "R_PPC64_TPREL16_HIGHA", /* name */
2151 FALSE
, /* partial_inplace */
2153 0xffff, /* dst_mask */
2154 FALSE
), /* pcrel_offset */
2156 /* Marker reloc on ELFv2 large-model function entry. */
2157 HOWTO (R_PPC64_ENTRY
,
2159 2, /* size (0 = byte, 1 = short, 2 = long) */
2161 FALSE
, /* pc_relative */
2163 complain_overflow_dont
, /* complain_on_overflow */
2164 bfd_elf_generic_reloc
, /* special_function */
2165 "R_PPC64_ENTRY", /* name */
2166 FALSE
, /* partial_inplace */
2169 FALSE
), /* pcrel_offset */
2171 /* Like ADDR64, but use local entry point of function. */
2172 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2174 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2176 FALSE
, /* pc_relative */
2178 complain_overflow_dont
, /* complain_on_overflow */
2179 bfd_elf_generic_reloc
, /* special_function */
2180 "R_PPC64_ADDR64_LOCAL", /* name */
2181 FALSE
, /* partial_inplace */
2183 ONES (64), /* dst_mask */
2184 FALSE
), /* pcrel_offset */
2186 /* GNU extension to record C++ vtable hierarchy. */
2187 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2189 0, /* size (0 = byte, 1 = short, 2 = long) */
2191 FALSE
, /* pc_relative */
2193 complain_overflow_dont
, /* complain_on_overflow */
2194 NULL
, /* special_function */
2195 "R_PPC64_GNU_VTINHERIT", /* name */
2196 FALSE
, /* partial_inplace */
2199 FALSE
), /* pcrel_offset */
2201 /* GNU extension to record C++ vtable member usage. */
2202 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2204 0, /* size (0 = byte, 1 = short, 2 = long) */
2206 FALSE
, /* pc_relative */
2208 complain_overflow_dont
, /* complain_on_overflow */
2209 NULL
, /* special_function */
2210 "R_PPC64_GNU_VTENTRY", /* name */
2211 FALSE
, /* partial_inplace */
2214 FALSE
), /* pcrel_offset */
2218 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2222 ppc_howto_init (void)
2224 unsigned int i
, type
;
2226 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2228 type
= ppc64_elf_howto_raw
[i
].type
;
2229 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2230 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2234 static reloc_howto_type
*
2235 ppc64_elf_reloc_type_lookup (bfd
*abfd
,
2236 bfd_reloc_code_real_type code
)
2238 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2240 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2241 /* Initialize howto table if needed. */
2247 /* xgettext:c-format */
2248 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, (int) code
);
2249 bfd_set_error (bfd_error_bad_value
);
2252 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2254 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2256 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2258 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2260 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2262 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2264 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2266 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2268 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2270 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2272 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2274 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2276 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2278 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2280 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2282 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2284 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2286 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2288 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2290 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2292 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2294 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2296 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2298 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2300 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2302 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2304 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2306 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2308 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2310 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2312 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2314 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2316 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2318 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2320 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2322 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2324 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2326 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2328 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2330 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2332 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2334 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2336 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2338 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2340 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2342 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2344 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2346 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2348 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2350 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2352 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2354 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2356 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2358 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2360 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2362 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2364 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2366 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2368 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2370 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2372 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2374 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2376 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2378 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2380 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2382 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2384 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2386 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2388 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2390 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2392 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2394 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2396 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2398 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2400 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2404 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2406 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2408 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2410 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2412 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2414 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2416 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2418 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2420 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2422 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2424 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2426 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2428 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2430 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2432 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2434 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2436 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2438 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2440 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2442 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2444 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2446 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2448 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2450 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2452 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2454 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2456 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2458 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2460 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2462 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2464 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2466 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2468 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2470 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2472 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2474 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC64_16DX_HA
;
2476 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2478 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2480 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2482 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2484 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2488 return ppc64_elf_howto_table
[r
];
2491 static reloc_howto_type
*
2492 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2497 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2498 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2499 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2500 return &ppc64_elf_howto_raw
[i
];
2506 /* Set the howto pointer for a PowerPC ELF reloc. */
2509 ppc64_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
2510 Elf_Internal_Rela
*dst
)
2514 /* Initialize howto table if needed. */
2515 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2518 type
= ELF64_R_TYPE (dst
->r_info
);
2519 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2521 /* xgettext:c-format */
2522 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2524 bfd_set_error (bfd_error_bad_value
);
2527 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2528 if (cache_ptr
->howto
== NULL
|| cache_ptr
->howto
->name
== NULL
)
2530 /* xgettext:c-format */
2531 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2533 bfd_set_error (bfd_error_bad_value
);
2540 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2542 static bfd_reloc_status_type
2543 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2544 void *data
, asection
*input_section
,
2545 bfd
*output_bfd
, char **error_message
)
2547 enum elf_ppc64_reloc_type r_type
;
2549 bfd_size_type octets
;
2552 /* If this is a relocatable link (output_bfd test tells us), just
2553 call the generic function. Any adjustment will be done at final
2555 if (output_bfd
!= NULL
)
2556 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2557 input_section
, output_bfd
, error_message
);
2559 /* Adjust the addend for sign extension of the low 16 bits.
2560 We won't actually be using the low 16 bits, so trashing them
2562 reloc_entry
->addend
+= 0x8000;
2563 r_type
= reloc_entry
->howto
->type
;
2564 if (r_type
!= R_PPC64_REL16DX_HA
)
2565 return bfd_reloc_continue
;
2568 if (!bfd_is_com_section (symbol
->section
))
2569 value
= symbol
->value
;
2570 value
+= (reloc_entry
->addend
2571 + symbol
->section
->output_offset
2572 + symbol
->section
->output_section
->vma
);
2573 value
-= (reloc_entry
->address
2574 + input_section
->output_offset
2575 + input_section
->output_section
->vma
);
2576 value
= (bfd_signed_vma
) value
>> 16;
2578 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2579 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2581 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2582 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2583 if (value
+ 0x8000 > 0xffff)
2584 return bfd_reloc_overflow
;
2585 return bfd_reloc_ok
;
2588 static bfd_reloc_status_type
2589 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2590 void *data
, asection
*input_section
,
2591 bfd
*output_bfd
, char **error_message
)
2593 if (output_bfd
!= NULL
)
2594 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2595 input_section
, output_bfd
, error_message
);
2597 if (strcmp (symbol
->section
->name
, ".opd") == 0
2598 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2600 bfd_vma dest
= opd_entry_value (symbol
->section
,
2601 symbol
->value
+ reloc_entry
->addend
,
2603 if (dest
!= (bfd_vma
) -1)
2604 reloc_entry
->addend
= dest
- (symbol
->value
2605 + symbol
->section
->output_section
->vma
2606 + symbol
->section
->output_offset
);
2610 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2612 if (symbol
->section
->owner
!= abfd
2613 && symbol
->section
->owner
!= NULL
2614 && abiversion (symbol
->section
->owner
) >= 2)
2618 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2620 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2622 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2624 elfsym
= (elf_symbol_type
*) symdef
;
2630 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2632 return bfd_reloc_continue
;
2635 static bfd_reloc_status_type
2636 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2637 void *data
, asection
*input_section
,
2638 bfd
*output_bfd
, char **error_message
)
2641 enum elf_ppc64_reloc_type r_type
;
2642 bfd_size_type octets
;
2643 /* Assume 'at' branch hints. */
2644 bfd_boolean is_isa_v2
= TRUE
;
2646 /* If this is a relocatable link (output_bfd test tells us), just
2647 call the generic function. Any adjustment will be done at final
2649 if (output_bfd
!= NULL
)
2650 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2651 input_section
, output_bfd
, error_message
);
2653 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2654 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2655 insn
&= ~(0x01 << 21);
2656 r_type
= reloc_entry
->howto
->type
;
2657 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2658 || r_type
== R_PPC64_REL14_BRTAKEN
)
2659 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2663 /* Set 'a' bit. This is 0b00010 in BO field for branch
2664 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2665 for branch on CTR insns (BO == 1a00t or 1a01t). */
2666 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2668 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2678 if (!bfd_is_com_section (symbol
->section
))
2679 target
= symbol
->value
;
2680 target
+= symbol
->section
->output_section
->vma
;
2681 target
+= symbol
->section
->output_offset
;
2682 target
+= reloc_entry
->addend
;
2684 from
= (reloc_entry
->address
2685 + input_section
->output_offset
2686 + input_section
->output_section
->vma
);
2688 /* Invert 'y' bit if not the default. */
2689 if ((bfd_signed_vma
) (target
- from
) < 0)
2692 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2694 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2695 input_section
, output_bfd
, error_message
);
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_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
;
2712 return bfd_reloc_continue
;
2715 static bfd_reloc_status_type
2716 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2717 void *data
, asection
*input_section
,
2718 bfd
*output_bfd
, char **error_message
)
2720 /* If this is a relocatable link (output_bfd test tells us), just
2721 call the generic function. Any adjustment will be done at final
2723 if (output_bfd
!= NULL
)
2724 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2725 input_section
, output_bfd
, error_message
);
2727 /* Subtract the symbol section base address. */
2728 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2730 /* Adjust the addend for sign extension of the low 16 bits. */
2731 reloc_entry
->addend
+= 0x8000;
2732 return bfd_reloc_continue
;
2735 static bfd_reloc_status_type
2736 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2737 void *data
, asection
*input_section
,
2738 bfd
*output_bfd
, char **error_message
)
2742 /* If this is a relocatable link (output_bfd test tells us), just
2743 call the generic function. Any adjustment will be done at final
2745 if (output_bfd
!= NULL
)
2746 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2747 input_section
, output_bfd
, error_message
);
2749 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2751 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2753 /* Subtract the TOC base address. */
2754 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2755 return bfd_reloc_continue
;
2758 static bfd_reloc_status_type
2759 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2760 void *data
, asection
*input_section
,
2761 bfd
*output_bfd
, char **error_message
)
2765 /* If this is a relocatable link (output_bfd test tells us), just
2766 call the generic function. Any adjustment will be done at final
2768 if (output_bfd
!= NULL
)
2769 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2770 input_section
, output_bfd
, error_message
);
2772 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2774 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2776 /* Subtract the TOC base address. */
2777 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2779 /* Adjust the addend for sign extension of the low 16 bits. */
2780 reloc_entry
->addend
+= 0x8000;
2781 return bfd_reloc_continue
;
2784 static bfd_reloc_status_type
2785 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2786 void *data
, asection
*input_section
,
2787 bfd
*output_bfd
, char **error_message
)
2790 bfd_size_type octets
;
2792 /* If this is a relocatable link (output_bfd test tells us), just
2793 call the generic function. Any adjustment will be done at final
2795 if (output_bfd
!= NULL
)
2796 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2797 input_section
, output_bfd
, error_message
);
2799 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2801 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2803 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2804 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2805 return bfd_reloc_ok
;
2808 static bfd_reloc_status_type
2809 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2810 void *data
, asection
*input_section
,
2811 bfd
*output_bfd
, char **error_message
)
2813 /* If this is a relocatable link (output_bfd test tells us), just
2814 call the generic function. Any adjustment will be done at final
2816 if (output_bfd
!= NULL
)
2817 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2818 input_section
, output_bfd
, error_message
);
2820 if (error_message
!= NULL
)
2822 static char buf
[60];
2823 sprintf (buf
, "generic linker can't handle %s",
2824 reloc_entry
->howto
->name
);
2825 *error_message
= buf
;
2827 return bfd_reloc_dangerous
;
2830 /* Track GOT entries needed for a given symbol. We might need more
2831 than one got entry per symbol. */
2834 struct got_entry
*next
;
2836 /* The symbol addend that we'll be placing in the GOT. */
2839 /* Unlike other ELF targets, we use separate GOT entries for the same
2840 symbol referenced from different input files. This is to support
2841 automatic multiple TOC/GOT sections, where the TOC base can vary
2842 from one input file to another. After partitioning into TOC groups
2843 we merge entries within the group.
2845 Point to the BFD owning this GOT entry. */
2848 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2849 TLS_TPREL or TLS_DTPREL for tls entries. */
2850 unsigned char tls_type
;
2852 /* Non-zero if got.ent points to real entry. */
2853 unsigned char is_indirect
;
2855 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2858 bfd_signed_vma refcount
;
2860 struct got_entry
*ent
;
2864 /* The same for PLT. */
2867 struct plt_entry
*next
;
2873 bfd_signed_vma refcount
;
2878 struct ppc64_elf_obj_tdata
2880 struct elf_obj_tdata elf
;
2882 /* Shortcuts to dynamic linker sections. */
2886 /* Used during garbage collection. We attach global symbols defined
2887 on removed .opd entries to this section so that the sym is removed. */
2888 asection
*deleted_section
;
2890 /* TLS local dynamic got entry handling. Support for multiple GOT
2891 sections means we potentially need one of these for each input bfd. */
2892 struct got_entry tlsld_got
;
2895 /* A copy of relocs before they are modified for --emit-relocs. */
2896 Elf_Internal_Rela
*relocs
;
2898 /* Section contents. */
2902 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2903 the reloc to be in the range -32768 to 32767. */
2904 unsigned int has_small_toc_reloc
: 1;
2906 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2907 instruction not one we handle. */
2908 unsigned int unexpected_toc_insn
: 1;
2911 #define ppc64_elf_tdata(bfd) \
2912 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2914 #define ppc64_tlsld_got(bfd) \
2915 (&ppc64_elf_tdata (bfd)->tlsld_got)
2917 #define is_ppc64_elf(bfd) \
2918 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2919 && elf_object_id (bfd) == PPC64_ELF_DATA)
2921 /* Override the generic function because we store some extras. */
2924 ppc64_elf_mkobject (bfd
*abfd
)
2926 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2930 /* Fix bad default arch selected for a 64 bit input bfd when the
2931 default is 32 bit. Also select arch based on apuinfo. */
2934 ppc64_elf_object_p (bfd
*abfd
)
2936 if (!abfd
->arch_info
->the_default
)
2939 if (abfd
->arch_info
->bits_per_word
== 32)
2941 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2943 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2945 /* Relies on arch after 32 bit default being 64 bit default. */
2946 abfd
->arch_info
= abfd
->arch_info
->next
;
2947 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2950 return _bfd_elf_ppc_set_arch (abfd
);
2953 /* Support for core dump NOTE sections. */
2956 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2958 size_t offset
, size
;
2960 if (note
->descsz
!= 504)
2964 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2967 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2973 /* Make a ".reg/999" section. */
2974 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2975 size
, note
->descpos
+ offset
);
2979 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2981 if (note
->descsz
!= 136)
2984 elf_tdata (abfd
)->core
->pid
2985 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2986 elf_tdata (abfd
)->core
->program
2987 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2988 elf_tdata (abfd
)->core
->command
2989 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2995 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
3008 va_start (ap
, note_type
);
3009 memset (data
, 0, sizeof (data
));
3010 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
3011 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
3013 return elfcore_write_note (abfd
, buf
, bufsiz
,
3014 "CORE", note_type
, data
, sizeof (data
));
3025 va_start (ap
, note_type
);
3026 memset (data
, 0, 112);
3027 pid
= va_arg (ap
, long);
3028 bfd_put_32 (abfd
, pid
, data
+ 32);
3029 cursig
= va_arg (ap
, int);
3030 bfd_put_16 (abfd
, cursig
, data
+ 12);
3031 greg
= va_arg (ap
, const void *);
3032 memcpy (data
+ 112, greg
, 384);
3033 memset (data
+ 496, 0, 8);
3035 return elfcore_write_note (abfd
, buf
, bufsiz
,
3036 "CORE", note_type
, data
, sizeof (data
));
3041 /* Add extra PPC sections. */
3043 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3045 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3046 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3047 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3048 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3049 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3050 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3051 { NULL
, 0, 0, 0, 0 }
3054 enum _ppc64_sec_type
{
3060 struct _ppc64_elf_section_data
3062 struct bfd_elf_section_data elf
;
3066 /* An array with one entry for each opd function descriptor,
3067 and some spares since opd entries may be either 16 or 24 bytes. */
3068 #define OPD_NDX(OFF) ((OFF) >> 4)
3069 struct _opd_sec_data
3071 /* Points to the function code section for local opd entries. */
3072 asection
**func_sec
;
3074 /* After editing .opd, adjust references to opd local syms. */
3078 /* An array for toc sections, indexed by offset/8. */
3079 struct _toc_sec_data
3081 /* Specifies the relocation symbol index used at a given toc offset. */
3084 /* And the relocation addend. */
3089 enum _ppc64_sec_type sec_type
:2;
3091 /* Flag set when small branches are detected. Used to
3092 select suitable defaults for the stub group size. */
3093 unsigned int has_14bit_branch
:1;
3096 #define ppc64_elf_section_data(sec) \
3097 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3100 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3102 if (!sec
->used_by_bfd
)
3104 struct _ppc64_elf_section_data
*sdata
;
3105 bfd_size_type amt
= sizeof (*sdata
);
3107 sdata
= bfd_zalloc (abfd
, amt
);
3110 sec
->used_by_bfd
= sdata
;
3113 return _bfd_elf_new_section_hook (abfd
, sec
);
3116 static struct _opd_sec_data
*
3117 get_opd_info (asection
* sec
)
3120 && ppc64_elf_section_data (sec
) != NULL
3121 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3122 return &ppc64_elf_section_data (sec
)->u
.opd
;
3126 /* Parameters for the qsort hook. */
3127 static bfd_boolean synthetic_relocatable
;
3128 static asection
*synthetic_opd
;
3130 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3133 compare_symbols (const void *ap
, const void *bp
)
3135 const asymbol
*a
= * (const asymbol
**) ap
;
3136 const asymbol
*b
= * (const asymbol
**) bp
;
3138 /* Section symbols first. */
3139 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3141 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3144 /* then .opd symbols. */
3145 if (synthetic_opd
!= NULL
)
3147 if (strcmp (a
->section
->name
, ".opd") == 0
3148 && strcmp (b
->section
->name
, ".opd") != 0)
3150 if (strcmp (a
->section
->name
, ".opd") != 0
3151 && strcmp (b
->section
->name
, ".opd") == 0)
3155 /* then other code symbols. */
3156 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3157 == (SEC_CODE
| SEC_ALLOC
)
3158 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3159 != (SEC_CODE
| SEC_ALLOC
))
3162 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3163 != (SEC_CODE
| SEC_ALLOC
)
3164 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3165 == (SEC_CODE
| SEC_ALLOC
))
3168 if (synthetic_relocatable
)
3170 if (a
->section
->id
< b
->section
->id
)
3173 if (a
->section
->id
> b
->section
->id
)
3177 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3180 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3183 /* For syms with the same value, prefer strong dynamic global function
3184 syms over other syms. */
3185 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3188 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3191 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3194 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3197 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3200 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3203 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3206 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3212 /* Search SYMS for a symbol of the given VALUE. */
3215 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3219 if (id
== (unsigned) -1)
3223 mid
= (lo
+ hi
) >> 1;
3224 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3226 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3236 mid
= (lo
+ hi
) >> 1;
3237 if (syms
[mid
]->section
->id
< id
)
3239 else if (syms
[mid
]->section
->id
> id
)
3241 else if (syms
[mid
]->value
< value
)
3243 else if (syms
[mid
]->value
> value
)
3253 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3255 bfd_vma vma
= *(bfd_vma
*) ptr
;
3256 return ((section
->flags
& SEC_ALLOC
) != 0
3257 && section
->vma
<= vma
3258 && vma
< section
->vma
+ section
->size
);
3261 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3262 entry syms. Also generate @plt symbols for the glink branch table.
3263 Returns count of synthetic symbols in RET or -1 on error. */
3266 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3267 long static_count
, asymbol
**static_syms
,
3268 long dyn_count
, asymbol
**dyn_syms
,
3275 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3276 asection
*opd
= NULL
;
3277 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3279 int abi
= abiversion (abfd
);
3285 opd
= bfd_get_section_by_name (abfd
, ".opd");
3286 if (opd
== NULL
&& abi
== 1)
3298 symcount
= static_count
;
3300 symcount
+= dyn_count
;
3304 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3308 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3310 /* Use both symbol tables. */
3311 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3312 memcpy (syms
+ static_count
, dyn_syms
,
3313 (dyn_count
+ 1) * sizeof (*syms
));
3315 else if (!relocatable
&& static_count
== 0)
3316 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3318 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3320 synthetic_relocatable
= relocatable
;
3321 synthetic_opd
= opd
;
3322 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3324 if (!relocatable
&& symcount
> 1)
3327 /* Trim duplicate syms, since we may have merged the normal and
3328 dynamic symbols. Actually, we only care about syms that have
3329 different values, so trim any with the same value. */
3330 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3331 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3332 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3333 syms
[j
++] = syms
[i
];
3338 /* Note that here and in compare_symbols we can't compare opd and
3339 sym->section directly. With separate debug info files, the
3340 symbols will be extracted from the debug file while abfd passed
3341 to this function is the real binary. */
3342 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3346 for (; i
< symcount
; ++i
)
3347 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3348 | SEC_THREAD_LOCAL
))
3349 != (SEC_CODE
| SEC_ALLOC
))
3350 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3354 for (; i
< symcount
; ++i
)
3355 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3359 for (; i
< symcount
; ++i
)
3360 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3364 for (; i
< symcount
; ++i
)
3365 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3366 != (SEC_CODE
| SEC_ALLOC
))
3374 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3379 if (opdsymend
== secsymend
)
3382 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3383 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3387 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3394 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3398 while (r
< opd
->relocation
+ relcount
3399 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3402 if (r
== opd
->relocation
+ relcount
)
3405 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3408 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3411 sym
= *r
->sym_ptr_ptr
;
3412 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3413 sym
->section
->id
, sym
->value
+ r
->addend
))
3416 size
+= sizeof (asymbol
);
3417 size
+= strlen (syms
[i
]->name
) + 2;
3423 s
= *ret
= bfd_malloc (size
);
3430 names
= (char *) (s
+ count
);
3432 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3436 while (r
< opd
->relocation
+ relcount
3437 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3440 if (r
== opd
->relocation
+ relcount
)
3443 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3446 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3449 sym
= *r
->sym_ptr_ptr
;
3450 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3451 sym
->section
->id
, sym
->value
+ r
->addend
))
3456 s
->flags
|= BSF_SYNTHETIC
;
3457 s
->section
= sym
->section
;
3458 s
->value
= sym
->value
+ r
->addend
;
3461 len
= strlen (syms
[i
]->name
);
3462 memcpy (names
, syms
[i
]->name
, len
+ 1);
3464 /* Have udata.p point back to the original symbol this
3465 synthetic symbol was derived from. */
3466 s
->udata
.p
= syms
[i
];
3473 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3474 bfd_byte
*contents
= NULL
;
3477 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3478 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3481 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3483 free_contents_and_exit_err
:
3485 free_contents_and_exit
:
3492 for (i
= secsymend
; i
< opdsymend
; ++i
)
3496 /* Ignore bogus symbols. */
3497 if (syms
[i
]->value
> opd
->size
- 8)
3500 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3501 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3504 size
+= sizeof (asymbol
);
3505 size
+= strlen (syms
[i
]->name
) + 2;
3509 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3511 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3513 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3515 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3517 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3518 goto free_contents_and_exit_err
;
3520 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3521 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3524 extdynend
= extdyn
+ dynamic
->size
;
3525 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3527 Elf_Internal_Dyn dyn
;
3528 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3530 if (dyn
.d_tag
== DT_NULL
)
3533 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3535 /* The first glink stub starts at DT_PPC64_GLINK plus 32.
3536 See comment in ppc64_elf_finish_dynamic_sections. */
3537 glink_vma
= dyn
.d_un
.d_val
+ 8 * 4;
3538 /* The .glink section usually does not survive the final
3539 link; search for the section (usually .text) where the
3540 glink stubs now reside. */
3541 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3552 /* Determine __glink trampoline by reading the relative branch
3553 from the first glink stub. */
3555 unsigned int off
= 0;
3557 while (bfd_get_section_contents (abfd
, glink
, buf
,
3558 glink_vma
+ off
- glink
->vma
, 4))
3560 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3562 if ((insn
& ~0x3fffffc) == 0)
3564 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3573 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3575 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3578 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3579 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3580 goto free_contents_and_exit_err
;
3582 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3583 size
+= plt_count
* sizeof (asymbol
);
3585 p
= relplt
->relocation
;
3586 for (i
= 0; i
< plt_count
; i
++, p
++)
3588 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3590 size
+= sizeof ("+0x") - 1 + 16;
3596 goto free_contents_and_exit
;
3597 s
= *ret
= bfd_malloc (size
);
3599 goto free_contents_and_exit_err
;
3601 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3603 for (i
= secsymend
; i
< opdsymend
; ++i
)
3607 if (syms
[i
]->value
> opd
->size
- 8)
3610 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3611 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3615 asection
*sec
= abfd
->sections
;
3622 long mid
= (lo
+ hi
) >> 1;
3623 if (syms
[mid
]->section
->vma
< ent
)
3625 else if (syms
[mid
]->section
->vma
> ent
)
3629 sec
= syms
[mid
]->section
;
3634 if (lo
>= hi
&& lo
> codesecsym
)
3635 sec
= syms
[lo
- 1]->section
;
3637 for (; sec
!= NULL
; sec
= sec
->next
)
3641 /* SEC_LOAD may not be set if SEC is from a separate debug
3643 if ((sec
->flags
& SEC_ALLOC
) == 0)
3645 if ((sec
->flags
& SEC_CODE
) != 0)
3648 s
->flags
|= BSF_SYNTHETIC
;
3649 s
->value
= ent
- s
->section
->vma
;
3652 len
= strlen (syms
[i
]->name
);
3653 memcpy (names
, syms
[i
]->name
, len
+ 1);
3655 /* Have udata.p point back to the original symbol this
3656 synthetic symbol was derived from. */
3657 s
->udata
.p
= syms
[i
];
3663 if (glink
!= NULL
&& relplt
!= NULL
)
3667 /* Add a symbol for the main glink trampoline. */
3668 memset (s
, 0, sizeof *s
);
3670 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3672 s
->value
= resolv_vma
- glink
->vma
;
3674 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3675 names
+= sizeof ("__glink_PLTresolve");
3680 /* FIXME: It would be very much nicer to put sym@plt on the
3681 stub rather than on the glink branch table entry. The
3682 objdump disassembler would then use a sensible symbol
3683 name on plt calls. The difficulty in doing so is
3684 a) finding the stubs, and,
3685 b) matching stubs against plt entries, and,
3686 c) there can be multiple stubs for a given plt entry.
3688 Solving (a) could be done by code scanning, but older
3689 ppc64 binaries used different stubs to current code.
3690 (b) is the tricky one since you need to known the toc
3691 pointer for at least one function that uses a pic stub to
3692 be able to calculate the plt address referenced.
3693 (c) means gdb would need to set multiple breakpoints (or
3694 find the glink branch itself) when setting breakpoints
3695 for pending shared library loads. */
3696 p
= relplt
->relocation
;
3697 for (i
= 0; i
< plt_count
; i
++, p
++)
3701 *s
= **p
->sym_ptr_ptr
;
3702 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3703 we are defining a symbol, ensure one of them is set. */
3704 if ((s
->flags
& BSF_LOCAL
) == 0)
3705 s
->flags
|= BSF_GLOBAL
;
3706 s
->flags
|= BSF_SYNTHETIC
;
3708 s
->value
= glink_vma
- glink
->vma
;
3711 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3712 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3716 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3717 names
+= sizeof ("+0x") - 1;
3718 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3719 names
+= strlen (names
);
3721 memcpy (names
, "@plt", sizeof ("@plt"));
3722 names
+= sizeof ("@plt");
3742 /* The following functions are specific to the ELF linker, while
3743 functions above are used generally. Those named ppc64_elf_* are
3744 called by the main ELF linker code. They appear in this file more
3745 or less in the order in which they are called. eg.
3746 ppc64_elf_check_relocs is called early in the link process,
3747 ppc64_elf_finish_dynamic_sections is one of the last functions
3750 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3751 functions have both a function code symbol and a function descriptor
3752 symbol. A call to foo in a relocatable object file looks like:
3759 The function definition in another object file might be:
3763 . .quad .TOC.@tocbase
3769 When the linker resolves the call during a static link, the branch
3770 unsurprisingly just goes to .foo and the .opd information is unused.
3771 If the function definition is in a shared library, things are a little
3772 different: The call goes via a plt call stub, the opd information gets
3773 copied to the plt, and the linker patches the nop.
3781 . std 2,40(1) # in practice, the call stub
3782 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3783 . addi 11,11,Lfoo@toc@l # this is the general idea
3791 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3793 The "reloc ()" notation is supposed to indicate that the linker emits
3794 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3797 What are the difficulties here? Well, firstly, the relocations
3798 examined by the linker in check_relocs are against the function code
3799 sym .foo, while the dynamic relocation in the plt is emitted against
3800 the function descriptor symbol, foo. Somewhere along the line, we need
3801 to carefully copy dynamic link information from one symbol to the other.
3802 Secondly, the generic part of the elf linker will make .foo a dynamic
3803 symbol as is normal for most other backends. We need foo dynamic
3804 instead, at least for an application final link. However, when
3805 creating a shared library containing foo, we need to have both symbols
3806 dynamic so that references to .foo are satisfied during the early
3807 stages of linking. Otherwise the linker might decide to pull in a
3808 definition from some other object, eg. a static library.
3810 Update: As of August 2004, we support a new convention. Function
3811 calls may use the function descriptor symbol, ie. "bl foo". This
3812 behaves exactly as "bl .foo". */
3814 /* Of those relocs that might be copied as dynamic relocs, this
3815 function selects those that must be copied when linking a shared
3816 library or PIE, even when the symbol is local. */
3819 must_be_dyn_reloc (struct bfd_link_info
*info
,
3820 enum elf_ppc64_reloc_type r_type
)
3825 /* Only relative relocs can be resolved when the object load
3826 address isn't fixed. DTPREL64 is excluded because the
3827 dynamic linker needs to differentiate global dynamic from
3828 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3836 case R_PPC64_TPREL16
:
3837 case R_PPC64_TPREL16_LO
:
3838 case R_PPC64_TPREL16_HI
:
3839 case R_PPC64_TPREL16_HA
:
3840 case R_PPC64_TPREL16_DS
:
3841 case R_PPC64_TPREL16_LO_DS
:
3842 case R_PPC64_TPREL16_HIGH
:
3843 case R_PPC64_TPREL16_HIGHA
:
3844 case R_PPC64_TPREL16_HIGHER
:
3845 case R_PPC64_TPREL16_HIGHERA
:
3846 case R_PPC64_TPREL16_HIGHEST
:
3847 case R_PPC64_TPREL16_HIGHESTA
:
3848 case R_PPC64_TPREL64
:
3849 /* These relocations are relative but in a shared library the
3850 linker doesn't know the thread pointer base. */
3851 return bfd_link_dll (info
);
3855 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3856 copying dynamic variables from a shared lib into an app's dynbss
3857 section, and instead use a dynamic relocation to point into the
3858 shared lib. With code that gcc generates, it's vital that this be
3859 enabled; In the PowerPC64 ABI, the address of a function is actually
3860 the address of a function descriptor, which resides in the .opd
3861 section. gcc uses the descriptor directly rather than going via the
3862 GOT as some other ABI's do, which means that initialized function
3863 pointers must reference the descriptor. Thus, a function pointer
3864 initialized to the address of a function in a shared library will
3865 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3866 redefines the function descriptor symbol to point to the copy. This
3867 presents a problem as a plt entry for that function is also
3868 initialized from the function descriptor symbol and the copy reloc
3869 may not be initialized first. */
3870 #define ELIMINATE_COPY_RELOCS 1
3872 /* Section name for stubs is the associated section name plus this
3874 #define STUB_SUFFIX ".stub"
3877 ppc_stub_long_branch:
3878 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3879 destination, but a 24 bit branch in a stub section will reach.
3882 ppc_stub_plt_branch:
3883 Similar to the above, but a 24 bit branch in the stub section won't
3884 reach its destination.
3885 . addis %r11,%r2,xxx@toc@ha
3886 . ld %r12,xxx@toc@l(%r11)
3891 Used to call a function in a shared library. If it so happens that
3892 the plt entry referenced crosses a 64k boundary, then an extra
3893 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3895 . addis %r11,%r2,xxx@toc@ha
3896 . ld %r12,xxx+0@toc@l(%r11)
3898 . ld %r2,xxx+8@toc@l(%r11)
3899 . ld %r11,xxx+16@toc@l(%r11)
3902 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3903 code to adjust the value and save r2 to support multiple toc sections.
3904 A ppc_stub_long_branch with an r2 offset looks like:
3906 . addis %r2,%r2,off@ha
3907 . addi %r2,%r2,off@l
3910 A ppc_stub_plt_branch with an r2 offset looks like:
3912 . addis %r11,%r2,xxx@toc@ha
3913 . ld %r12,xxx@toc@l(%r11)
3914 . addis %r2,%r2,off@ha
3915 . addi %r2,%r2,off@l
3919 In cases where the "addis" instruction would add zero, the "addis" is
3920 omitted and following instructions modified slightly in some cases.
3923 enum ppc_stub_type
{
3925 ppc_stub_long_branch
,
3926 ppc_stub_long_branch_r2off
,
3927 ppc_stub_plt_branch
,
3928 ppc_stub_plt_branch_r2off
,
3930 ppc_stub_plt_call_r2save
,
3931 ppc_stub_global_entry
,
3935 /* Information on stub grouping. */
3938 /* The stub section. */
3940 /* This is the section to which stubs in the group will be attached. */
3943 struct map_stub
*next
;
3944 /* Whether to emit a copy of register save/restore functions in this
3947 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3948 or -1u if no such stub with bctrl exists. */
3949 unsigned int tls_get_addr_opt_bctrl
;
3952 struct ppc_stub_hash_entry
{
3954 /* Base hash table entry structure. */
3955 struct bfd_hash_entry root
;
3957 enum ppc_stub_type stub_type
;
3959 /* Group information. */
3960 struct map_stub
*group
;
3962 /* Offset within stub_sec of the beginning of this stub. */
3963 bfd_vma stub_offset
;
3965 /* Given the symbol's value and its section we can determine its final
3966 value when building the stubs (so the stub knows where to jump. */
3967 bfd_vma target_value
;
3968 asection
*target_section
;
3970 /* The symbol table entry, if any, that this was derived from. */
3971 struct ppc_link_hash_entry
*h
;
3972 struct plt_entry
*plt_ent
;
3974 /* Symbol st_other. */
3975 unsigned char other
;
3978 struct ppc_branch_hash_entry
{
3980 /* Base hash table entry structure. */
3981 struct bfd_hash_entry root
;
3983 /* Offset within branch lookup table. */
3984 unsigned int offset
;
3986 /* Generation marker. */
3990 /* Used to track dynamic relocations for local symbols. */
3991 struct ppc_dyn_relocs
3993 struct ppc_dyn_relocs
*next
;
3995 /* The input section of the reloc. */
3998 /* Total number of relocs copied for the input section. */
3999 unsigned int count
: 31;
4001 /* Whether this entry is for STT_GNU_IFUNC symbols. */
4002 unsigned int ifunc
: 1;
4005 struct ppc_link_hash_entry
4007 struct elf_link_hash_entry elf
;
4010 /* A pointer to the most recently used stub hash entry against this
4012 struct ppc_stub_hash_entry
*stub_cache
;
4014 /* A pointer to the next symbol starting with a '.' */
4015 struct ppc_link_hash_entry
*next_dot_sym
;
4018 /* Track dynamic relocs copied for this symbol. */
4019 struct elf_dyn_relocs
*dyn_relocs
;
4021 /* Link between function code and descriptor symbols. */
4022 struct ppc_link_hash_entry
*oh
;
4024 /* Flag function code and descriptor symbols. */
4025 unsigned int is_func
:1;
4026 unsigned int is_func_descriptor
:1;
4027 unsigned int fake
:1;
4029 /* Whether global opd/toc sym has been adjusted or not.
4030 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4031 should be set for all globals defined in any opd/toc section. */
4032 unsigned int adjust_done
:1;
4034 /* Set if this is an out-of-line register save/restore function,
4035 with non-standard calling convention. */
4036 unsigned int save_res
:1;
4038 /* Set if a duplicate symbol with non-zero localentry is detected,
4039 even when the duplicate symbol does not provide a definition. */
4040 unsigned int non_zero_localentry
:1;
4042 /* Contexts in which symbol is used in the GOT (or TOC).
4043 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4044 corresponding relocs are encountered during check_relocs.
4045 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4046 indicate the corresponding GOT entry type is not needed.
4047 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4048 a TPREL one. We use a separate flag rather than setting TPREL
4049 just for convenience in distinguishing the two cases. */
4050 #define TLS_GD 1 /* GD reloc. */
4051 #define TLS_LD 2 /* LD reloc. */
4052 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4053 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4054 #define TLS_TLS 16 /* Any TLS reloc. */
4055 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4056 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4057 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4058 unsigned char tls_mask
;
4061 /* ppc64 ELF linker hash table. */
4063 struct ppc_link_hash_table
4065 struct elf_link_hash_table elf
;
4067 /* The stub hash table. */
4068 struct bfd_hash_table stub_hash_table
;
4070 /* Another hash table for plt_branch stubs. */
4071 struct bfd_hash_table branch_hash_table
;
4073 /* Hash table for function prologue tocsave. */
4074 htab_t tocsave_htab
;
4076 /* Various options and other info passed from the linker. */
4077 struct ppc64_elf_params
*params
;
4079 /* The size of sec_info below. */
4080 unsigned int sec_info_arr_size
;
4082 /* Per-section array of extra section info. Done this way rather
4083 than as part of ppc64_elf_section_data so we have the info for
4084 non-ppc64 sections. */
4087 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4092 /* The section group that this section belongs to. */
4093 struct map_stub
*group
;
4094 /* A temp section list pointer. */
4099 /* Linked list of groups. */
4100 struct map_stub
*group
;
4102 /* Temp used when calculating TOC pointers. */
4105 asection
*toc_first_sec
;
4107 /* Used when adding symbols. */
4108 struct ppc_link_hash_entry
*dot_syms
;
4110 /* Shortcuts to get to dynamic linker sections. */
4112 asection
*global_entry
;
4116 asection
*glink_eh_frame
;
4118 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4119 struct ppc_link_hash_entry
*tls_get_addr
;
4120 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4122 /* The size of reliplt used by got entry relocs. */
4123 bfd_size_type got_reli_size
;
4126 unsigned long stub_count
[ppc_stub_global_entry
];
4128 /* Number of stubs against global syms. */
4129 unsigned long stub_globals
;
4131 /* Set if we're linking code with function descriptors. */
4132 unsigned int opd_abi
:1;
4134 /* Support for multiple toc sections. */
4135 unsigned int do_multi_toc
:1;
4136 unsigned int multi_toc_needed
:1;
4137 unsigned int second_toc_pass
:1;
4138 unsigned int do_toc_opt
:1;
4140 /* Set if tls optimization is enabled. */
4141 unsigned int do_tls_opt
:1;
4144 unsigned int stub_error
:1;
4146 /* Whether func_desc_adjust needs to be run over symbols. */
4147 unsigned int need_func_desc_adj
:1;
4149 /* Whether there exist local gnu indirect function resolvers,
4150 referenced by dynamic relocations. */
4151 unsigned int local_ifunc_resolver
:1;
4152 unsigned int maybe_local_ifunc_resolver
:1;
4154 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4155 unsigned int has_plt_localentry0
:1;
4157 /* Incremented every time we size stubs. */
4158 unsigned int stub_iteration
;
4160 /* Small local sym cache. */
4161 struct sym_cache sym_cache
;
4164 /* Rename some of the generic section flags to better document how they
4167 /* Nonzero if this section has TLS related relocations. */
4168 #define has_tls_reloc sec_flg0
4170 /* Nonzero if this section has a call to __tls_get_addr. */
4171 #define has_tls_get_addr_call sec_flg1
4173 /* Nonzero if this section has any toc or got relocs. */
4174 #define has_toc_reloc sec_flg2
4176 /* Nonzero if this section has a call to another section that uses
4178 #define makes_toc_func_call sec_flg3
4180 /* Recursion protection when determining above flag. */
4181 #define call_check_in_progress sec_flg4
4182 #define call_check_done sec_flg5
4184 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4186 #define ppc_hash_table(p) \
4187 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4188 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4190 #define ppc_stub_hash_lookup(table, string, create, copy) \
4191 ((struct ppc_stub_hash_entry *) \
4192 bfd_hash_lookup ((table), (string), (create), (copy)))
4194 #define ppc_branch_hash_lookup(table, string, create, copy) \
4195 ((struct ppc_branch_hash_entry *) \
4196 bfd_hash_lookup ((table), (string), (create), (copy)))
4198 /* Create an entry in the stub hash table. */
4200 static struct bfd_hash_entry
*
4201 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4202 struct bfd_hash_table
*table
,
4205 /* Allocate the structure if it has not already been allocated by a
4209 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4214 /* Call the allocation method of the superclass. */
4215 entry
= bfd_hash_newfunc (entry
, table
, string
);
4218 struct ppc_stub_hash_entry
*eh
;
4220 /* Initialize the local fields. */
4221 eh
= (struct ppc_stub_hash_entry
*) entry
;
4222 eh
->stub_type
= ppc_stub_none
;
4224 eh
->stub_offset
= 0;
4225 eh
->target_value
= 0;
4226 eh
->target_section
= NULL
;
4235 /* Create an entry in the branch hash table. */
4237 static struct bfd_hash_entry
*
4238 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4239 struct bfd_hash_table
*table
,
4242 /* Allocate the structure if it has not already been allocated by a
4246 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4251 /* Call the allocation method of the superclass. */
4252 entry
= bfd_hash_newfunc (entry
, table
, string
);
4255 struct ppc_branch_hash_entry
*eh
;
4257 /* Initialize the local fields. */
4258 eh
= (struct ppc_branch_hash_entry
*) entry
;
4266 /* Create an entry in a ppc64 ELF linker hash table. */
4268 static struct bfd_hash_entry
*
4269 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4270 struct bfd_hash_table
*table
,
4273 /* Allocate the structure if it has not already been allocated by a
4277 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4282 /* Call the allocation method of the superclass. */
4283 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4286 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4288 memset (&eh
->u
.stub_cache
, 0,
4289 (sizeof (struct ppc_link_hash_entry
)
4290 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4292 /* When making function calls, old ABI code references function entry
4293 points (dot symbols), while new ABI code references the function
4294 descriptor symbol. We need to make any combination of reference and
4295 definition work together, without breaking archive linking.
4297 For a defined function "foo" and an undefined call to "bar":
4298 An old object defines "foo" and ".foo", references ".bar" (possibly
4300 A new object defines "foo" and references "bar".
4302 A new object thus has no problem with its undefined symbols being
4303 satisfied by definitions in an old object. On the other hand, the
4304 old object won't have ".bar" satisfied by a new object.
4306 Keep a list of newly added dot-symbols. */
4308 if (string
[0] == '.')
4310 struct ppc_link_hash_table
*htab
;
4312 htab
= (struct ppc_link_hash_table
*) table
;
4313 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4314 htab
->dot_syms
= eh
;
4321 struct tocsave_entry
{
4327 tocsave_htab_hash (const void *p
)
4329 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4330 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4334 tocsave_htab_eq (const void *p1
, const void *p2
)
4336 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4337 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4338 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4341 /* Destroy a ppc64 ELF linker hash table. */
4344 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4346 struct ppc_link_hash_table
*htab
;
4348 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4349 if (htab
->tocsave_htab
)
4350 htab_delete (htab
->tocsave_htab
);
4351 bfd_hash_table_free (&htab
->branch_hash_table
);
4352 bfd_hash_table_free (&htab
->stub_hash_table
);
4353 _bfd_elf_link_hash_table_free (obfd
);
4356 /* Create a ppc64 ELF linker hash table. */
4358 static struct bfd_link_hash_table
*
4359 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4361 struct ppc_link_hash_table
*htab
;
4362 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4364 htab
= bfd_zmalloc (amt
);
4368 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4369 sizeof (struct ppc_link_hash_entry
),
4376 /* Init the stub hash table too. */
4377 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4378 sizeof (struct ppc_stub_hash_entry
)))
4380 _bfd_elf_link_hash_table_free (abfd
);
4384 /* And the branch hash table. */
4385 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4386 sizeof (struct ppc_branch_hash_entry
)))
4388 bfd_hash_table_free (&htab
->stub_hash_table
);
4389 _bfd_elf_link_hash_table_free (abfd
);
4393 htab
->tocsave_htab
= htab_try_create (1024,
4397 if (htab
->tocsave_htab
== NULL
)
4399 ppc64_elf_link_hash_table_free (abfd
);
4402 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4404 /* Initializing two fields of the union is just cosmetic. We really
4405 only care about glist, but when compiled on a 32-bit host the
4406 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4407 debugger inspection of these fields look nicer. */
4408 htab
->elf
.init_got_refcount
.refcount
= 0;
4409 htab
->elf
.init_got_refcount
.glist
= NULL
;
4410 htab
->elf
.init_plt_refcount
.refcount
= 0;
4411 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4412 htab
->elf
.init_got_offset
.offset
= 0;
4413 htab
->elf
.init_got_offset
.glist
= NULL
;
4414 htab
->elf
.init_plt_offset
.offset
= 0;
4415 htab
->elf
.init_plt_offset
.glist
= NULL
;
4417 return &htab
->elf
.root
;
4420 /* Create sections for linker generated code. */
4423 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4425 struct ppc_link_hash_table
*htab
;
4428 htab
= ppc_hash_table (info
);
4430 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4431 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4432 if (htab
->params
->save_restore_funcs
)
4434 /* Create .sfpr for code to save and restore fp regs. */
4435 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4437 if (htab
->sfpr
== NULL
4438 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4442 if (bfd_link_relocatable (info
))
4445 /* Create .glink for lazy dynamic linking support. */
4446 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4448 if (htab
->glink
== NULL
4449 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4452 /* The part of .glink used by global entry stubs, separate so that
4453 it can be aligned appropriately without affecting htab->glink. */
4454 htab
->global_entry
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4456 if (htab
->global_entry
== NULL
4457 || ! bfd_set_section_alignment (dynobj
, htab
->global_entry
, 2))
4460 if (!info
->no_ld_generated_unwind_info
)
4462 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4463 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4464 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4467 if (htab
->glink_eh_frame
== NULL
4468 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4472 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4473 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4474 if (htab
->elf
.iplt
== NULL
4475 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4478 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4479 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4481 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4482 if (htab
->elf
.irelplt
== NULL
4483 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4486 /* Create branch lookup table for plt_branch stubs. */
4487 flags
= (SEC_ALLOC
| SEC_LOAD
4488 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4489 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4491 if (htab
->brlt
== NULL
4492 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4495 if (!bfd_link_pic (info
))
4498 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4499 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4500 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4503 if (htab
->relbrlt
== NULL
4504 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4510 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4513 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4514 struct ppc64_elf_params
*params
)
4516 struct ppc_link_hash_table
*htab
;
4518 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4520 /* Always hook our dynamic sections into the first bfd, which is the
4521 linker created stub bfd. This ensures that the GOT header is at
4522 the start of the output TOC section. */
4523 htab
= ppc_hash_table (info
);
4524 htab
->elf
.dynobj
= params
->stub_bfd
;
4525 htab
->params
= params
;
4527 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4530 /* Build a name for an entry in the stub hash table. */
4533 ppc_stub_name (const asection
*input_section
,
4534 const asection
*sym_sec
,
4535 const struct ppc_link_hash_entry
*h
,
4536 const Elf_Internal_Rela
*rel
)
4541 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4542 offsets from a sym as a branch target? In fact, we could
4543 probably assume the addend is always zero. */
4544 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4548 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4549 stub_name
= bfd_malloc (len
);
4550 if (stub_name
== NULL
)
4553 len
= sprintf (stub_name
, "%08x.%s+%x",
4554 input_section
->id
& 0xffffffff,
4555 h
->elf
.root
.root
.string
,
4556 (int) rel
->r_addend
& 0xffffffff);
4560 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4561 stub_name
= bfd_malloc (len
);
4562 if (stub_name
== NULL
)
4565 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4566 input_section
->id
& 0xffffffff,
4567 sym_sec
->id
& 0xffffffff,
4568 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4569 (int) rel
->r_addend
& 0xffffffff);
4571 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4572 stub_name
[len
- 2] = 0;
4576 /* Look up an entry in the stub hash. Stub entries are cached because
4577 creating the stub name takes a bit of time. */
4579 static struct ppc_stub_hash_entry
*
4580 ppc_get_stub_entry (const asection
*input_section
,
4581 const asection
*sym_sec
,
4582 struct ppc_link_hash_entry
*h
,
4583 const Elf_Internal_Rela
*rel
,
4584 struct ppc_link_hash_table
*htab
)
4586 struct ppc_stub_hash_entry
*stub_entry
;
4587 struct map_stub
*group
;
4589 /* If this input section is part of a group of sections sharing one
4590 stub section, then use the id of the first section in the group.
4591 Stub names need to include a section id, as there may well be
4592 more than one stub used to reach say, printf, and we need to
4593 distinguish between them. */
4594 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4598 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4599 && h
->u
.stub_cache
->h
== h
4600 && h
->u
.stub_cache
->group
== group
)
4602 stub_entry
= h
->u
.stub_cache
;
4608 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4609 if (stub_name
== NULL
)
4612 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4613 stub_name
, FALSE
, FALSE
);
4615 h
->u
.stub_cache
= stub_entry
;
4623 /* Add a new stub entry to the stub hash. Not all fields of the new
4624 stub entry are initialised. */
4626 static struct ppc_stub_hash_entry
*
4627 ppc_add_stub (const char *stub_name
,
4629 struct bfd_link_info
*info
)
4631 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4632 struct map_stub
*group
;
4635 struct ppc_stub_hash_entry
*stub_entry
;
4637 group
= htab
->sec_info
[section
->id
].u
.group
;
4638 link_sec
= group
->link_sec
;
4639 stub_sec
= group
->stub_sec
;
4640 if (stub_sec
== NULL
)
4646 namelen
= strlen (link_sec
->name
);
4647 len
= namelen
+ sizeof (STUB_SUFFIX
);
4648 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4652 memcpy (s_name
, link_sec
->name
, namelen
);
4653 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4654 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4655 if (stub_sec
== NULL
)
4657 group
->stub_sec
= stub_sec
;
4660 /* Enter this entry into the linker stub hash table. */
4661 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4663 if (stub_entry
== NULL
)
4665 /* xgettext:c-format */
4666 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4667 section
->owner
, stub_name
);
4671 stub_entry
->group
= group
;
4672 stub_entry
->stub_offset
= 0;
4676 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4677 not already done. */
4680 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4682 asection
*got
, *relgot
;
4684 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4686 if (!is_ppc64_elf (abfd
))
4692 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4695 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4696 | SEC_LINKER_CREATED
);
4698 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4700 || !bfd_set_section_alignment (abfd
, got
, 3))
4703 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4704 flags
| SEC_READONLY
);
4706 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4709 ppc64_elf_tdata (abfd
)->got
= got
;
4710 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4714 /* Follow indirect and warning symbol links. */
4716 static inline struct bfd_link_hash_entry
*
4717 follow_link (struct bfd_link_hash_entry
*h
)
4719 while (h
->type
== bfd_link_hash_indirect
4720 || h
->type
== bfd_link_hash_warning
)
4725 static inline struct elf_link_hash_entry
*
4726 elf_follow_link (struct elf_link_hash_entry
*h
)
4728 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4731 static inline struct ppc_link_hash_entry
*
4732 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4734 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4737 /* Merge PLT info on FROM with that on TO. */
4740 move_plt_plist (struct ppc_link_hash_entry
*from
,
4741 struct ppc_link_hash_entry
*to
)
4743 if (from
->elf
.plt
.plist
!= NULL
)
4745 if (to
->elf
.plt
.plist
!= NULL
)
4747 struct plt_entry
**entp
;
4748 struct plt_entry
*ent
;
4750 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4752 struct plt_entry
*dent
;
4754 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4755 if (dent
->addend
== ent
->addend
)
4757 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4764 *entp
= to
->elf
.plt
.plist
;
4767 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4768 from
->elf
.plt
.plist
= NULL
;
4772 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4775 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4776 struct elf_link_hash_entry
*dir
,
4777 struct elf_link_hash_entry
*ind
)
4779 struct ppc_link_hash_entry
*edir
, *eind
;
4781 edir
= (struct ppc_link_hash_entry
*) dir
;
4782 eind
= (struct ppc_link_hash_entry
*) ind
;
4784 edir
->is_func
|= eind
->is_func
;
4785 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4786 edir
->tls_mask
|= eind
->tls_mask
;
4787 if (eind
->oh
!= NULL
)
4788 edir
->oh
= ppc_follow_link (eind
->oh
);
4790 if (edir
->elf
.versioned
!= versioned_hidden
)
4791 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4792 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4793 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4794 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4795 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4796 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4798 /* If we were called to copy over info for a weak sym, don't copy
4799 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4800 in order to simplify readonly_dynrelocs and save a field in the
4801 symbol hash entry, but that means dyn_relocs can't be used in any
4802 tests about a specific symbol, or affect other symbol flags which
4804 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4807 /* Copy over any dynamic relocs we may have on the indirect sym. */
4808 if (eind
->dyn_relocs
!= NULL
)
4810 if (edir
->dyn_relocs
!= NULL
)
4812 struct elf_dyn_relocs
**pp
;
4813 struct elf_dyn_relocs
*p
;
4815 /* Add reloc counts against the indirect sym to the direct sym
4816 list. Merge any entries against the same section. */
4817 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4819 struct elf_dyn_relocs
*q
;
4821 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4822 if (q
->sec
== p
->sec
)
4824 q
->pc_count
+= p
->pc_count
;
4825 q
->count
+= p
->count
;
4832 *pp
= edir
->dyn_relocs
;
4835 edir
->dyn_relocs
= eind
->dyn_relocs
;
4836 eind
->dyn_relocs
= NULL
;
4839 /* Copy over got entries that we may have already seen to the
4840 symbol which just became indirect. */
4841 if (eind
->elf
.got
.glist
!= NULL
)
4843 if (edir
->elf
.got
.glist
!= NULL
)
4845 struct got_entry
**entp
;
4846 struct got_entry
*ent
;
4848 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4850 struct got_entry
*dent
;
4852 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4853 if (dent
->addend
== ent
->addend
4854 && dent
->owner
== ent
->owner
4855 && dent
->tls_type
== ent
->tls_type
)
4857 dent
->got
.refcount
+= ent
->got
.refcount
;
4864 *entp
= edir
->elf
.got
.glist
;
4867 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4868 eind
->elf
.got
.glist
= NULL
;
4871 /* And plt entries. */
4872 move_plt_plist (eind
, edir
);
4874 if (eind
->elf
.dynindx
!= -1)
4876 if (edir
->elf
.dynindx
!= -1)
4877 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4878 edir
->elf
.dynstr_index
);
4879 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4880 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4881 eind
->elf
.dynindx
= -1;
4882 eind
->elf
.dynstr_index
= 0;
4886 /* Find the function descriptor hash entry from the given function code
4887 hash entry FH. Link the entries via their OH fields. */
4889 static struct ppc_link_hash_entry
*
4890 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4892 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4896 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4898 fdh
= (struct ppc_link_hash_entry
*)
4899 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4903 fdh
->is_func_descriptor
= 1;
4909 fdh
= ppc_follow_link (fdh
);
4910 fdh
->is_func_descriptor
= 1;
4915 /* Make a fake function descriptor sym for the undefined code sym FH. */
4917 static struct ppc_link_hash_entry
*
4918 make_fdh (struct bfd_link_info
*info
,
4919 struct ppc_link_hash_entry
*fh
)
4921 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4922 struct bfd_link_hash_entry
*bh
= NULL
;
4923 struct ppc_link_hash_entry
*fdh
;
4924 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4928 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4929 fh
->elf
.root
.root
.string
+ 1,
4930 flags
, bfd_und_section_ptr
, 0,
4931 NULL
, FALSE
, FALSE
, &bh
))
4934 fdh
= (struct ppc_link_hash_entry
*) bh
;
4935 fdh
->elf
.non_elf
= 0;
4937 fdh
->is_func_descriptor
= 1;
4944 /* Fix function descriptor symbols defined in .opd sections to be
4948 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4949 struct bfd_link_info
*info
,
4950 Elf_Internal_Sym
*isym
,
4952 flagword
*flags ATTRIBUTE_UNUSED
,
4956 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4957 && (ibfd
->flags
& DYNAMIC
) == 0
4958 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4959 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4962 && strcmp ((*sec
)->name
, ".opd") == 0)
4966 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4967 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4968 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4970 /* If the symbol is a function defined in .opd, and the function
4971 code is in a discarded group, let it appear to be undefined. */
4972 if (!bfd_link_relocatable (info
)
4973 && (*sec
)->reloc_count
!= 0
4974 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4975 FALSE
) != (bfd_vma
) -1
4976 && discarded_section (code_sec
))
4978 *sec
= bfd_und_section_ptr
;
4979 isym
->st_shndx
= SHN_UNDEF
;
4982 else if (*sec
!= NULL
4983 && strcmp ((*sec
)->name
, ".toc") == 0
4984 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4986 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4988 htab
->params
->object_in_toc
= 1;
4991 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4993 if (abiversion (ibfd
) == 0)
4994 set_abiversion (ibfd
, 2);
4995 else if (abiversion (ibfd
) == 1)
4997 _bfd_error_handler (_("symbol '%s' has invalid st_other"
4998 " for ABI version 1"), *name
);
4999 bfd_set_error (bfd_error_bad_value
);
5007 /* Merge non-visibility st_other attributes: local entry point. */
5010 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5011 const Elf_Internal_Sym
*isym
,
5012 bfd_boolean definition
,
5013 bfd_boolean dynamic
)
5015 if (definition
&& (!dynamic
|| !h
->def_regular
))
5016 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5017 | ELF_ST_VISIBILITY (h
->other
));
5020 /* Hook called on merging a symbol. We use this to clear "fake" since
5021 we now have a real symbol. */
5024 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5025 const Elf_Internal_Sym
*isym
,
5026 asection
**psec ATTRIBUTE_UNUSED
,
5027 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5028 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5029 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5030 const asection
*oldsec ATTRIBUTE_UNUSED
)
5032 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5033 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5034 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5038 /* This function makes an old ABI object reference to ".bar" cause the
5039 inclusion of a new ABI object archive that defines "bar".
5040 NAME is a symbol defined in an archive. Return a symbol in the hash
5041 table that might be satisfied by the archive symbols. */
5043 static struct elf_link_hash_entry
*
5044 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5045 struct bfd_link_info
*info
,
5048 struct elf_link_hash_entry
*h
;
5052 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5054 /* Don't return this sym if it is a fake function descriptor
5055 created by add_symbol_adjust. */
5056 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5062 len
= strlen (name
);
5063 dot_name
= bfd_alloc (abfd
, len
+ 2);
5064 if (dot_name
== NULL
)
5065 return (struct elf_link_hash_entry
*) -1;
5067 memcpy (dot_name
+ 1, name
, len
+ 1);
5068 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5069 bfd_release (abfd
, dot_name
);
5073 /* This function satisfies all old ABI object references to ".bar" if a
5074 new ABI object defines "bar". Well, at least, undefined dot symbols
5075 are made weak. This stops later archive searches from including an
5076 object if we already have a function descriptor definition. It also
5077 prevents the linker complaining about undefined symbols.
5078 We also check and correct mismatched symbol visibility here. The
5079 most restrictive visibility of the function descriptor and the
5080 function entry symbol is used. */
5083 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5085 struct ppc_link_hash_table
*htab
;
5086 struct ppc_link_hash_entry
*fdh
;
5088 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5089 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5091 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5094 if (eh
->elf
.root
.root
.string
[0] != '.')
5097 htab
= ppc_hash_table (info
);
5101 fdh
= lookup_fdh (eh
, htab
);
5103 && !bfd_link_relocatable (info
)
5104 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5105 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5106 && eh
->elf
.ref_regular
)
5108 /* Make an undefined function descriptor sym, in order to
5109 pull in an --as-needed shared lib. Archives are handled
5111 fdh
= make_fdh (info
, eh
);
5118 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5119 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5121 /* Make both descriptor and entry symbol have the most
5122 constraining visibility of either symbol. */
5123 if (entry_vis
< descr_vis
)
5124 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5125 else if (entry_vis
> descr_vis
)
5126 eh
->elf
.other
+= descr_vis
- entry_vis
;
5128 /* Propagate reference flags from entry symbol to function
5129 descriptor symbol. */
5130 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5131 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5132 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5133 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5135 if (!fdh
->elf
.forced_local
5136 && fdh
->elf
.dynindx
== -1
5137 && fdh
->elf
.versioned
!= versioned_hidden
5138 && (bfd_link_dll (info
)
5139 || fdh
->elf
.def_dynamic
5140 || fdh
->elf
.ref_dynamic
)
5141 && (eh
->elf
.ref_regular
5142 || eh
->elf
.def_regular
))
5144 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5152 /* Set up opd section info and abiversion for IBFD, and process list
5153 of dot-symbols we made in link_hash_newfunc. */
5156 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5158 struct ppc_link_hash_table
*htab
;
5159 struct ppc_link_hash_entry
**p
, *eh
;
5160 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5162 if (opd
!= NULL
&& opd
->size
!= 0)
5164 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5165 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5167 if (abiversion (ibfd
) == 0)
5168 set_abiversion (ibfd
, 1);
5169 else if (abiversion (ibfd
) >= 2)
5171 /* xgettext:c-format */
5172 _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"),
5173 ibfd
, abiversion (ibfd
));
5174 bfd_set_error (bfd_error_bad_value
);
5179 if (is_ppc64_elf (info
->output_bfd
))
5181 /* For input files without an explicit abiversion in e_flags
5182 we should have flagged any with symbol st_other bits set
5183 as ELFv1 and above flagged those with .opd as ELFv2.
5184 Set the output abiversion if not yet set, and for any input
5185 still ambiguous, take its abiversion from the output.
5186 Differences in ABI are reported later. */
5187 if (abiversion (info
->output_bfd
) == 0)
5188 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5189 else if (abiversion (ibfd
) == 0)
5190 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5193 htab
= ppc_hash_table (info
);
5197 if (opd
!= NULL
&& opd
->size
!= 0
5198 && (ibfd
->flags
& DYNAMIC
) == 0
5199 && (opd
->flags
& SEC_RELOC
) != 0
5200 && opd
->reloc_count
!= 0
5201 && !bfd_is_abs_section (opd
->output_section
)
5202 && info
->gc_sections
)
5204 /* Garbage collection needs some extra help with .opd sections.
5205 We don't want to necessarily keep everything referenced by
5206 relocs in .opd, as that would keep all functions. Instead,
5207 if we reference an .opd symbol (a function descriptor), we
5208 want to keep the function code symbol's section. This is
5209 easy for global symbols, but for local syms we need to keep
5210 information about the associated function section. */
5212 asection
**opd_sym_map
;
5213 Elf_Internal_Shdr
*symtab_hdr
;
5214 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5216 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5217 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5218 if (opd_sym_map
== NULL
)
5220 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5221 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5225 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5226 rel_end
= relocs
+ opd
->reloc_count
- 1;
5227 for (rel
= relocs
; rel
< rel_end
; rel
++)
5229 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5230 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5232 if (r_type
== R_PPC64_ADDR64
5233 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5234 && r_symndx
< symtab_hdr
->sh_info
)
5236 Elf_Internal_Sym
*isym
;
5239 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5242 if (elf_section_data (opd
)->relocs
!= relocs
)
5247 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5248 if (s
!= NULL
&& s
!= opd
)
5249 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5252 if (elf_section_data (opd
)->relocs
!= relocs
)
5256 p
= &htab
->dot_syms
;
5257 while ((eh
= *p
) != NULL
)
5260 if (&eh
->elf
== htab
->elf
.hgot
)
5262 else if (htab
->elf
.hgot
== NULL
5263 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5264 htab
->elf
.hgot
= &eh
->elf
;
5265 else if (abiversion (ibfd
) <= 1)
5267 htab
->need_func_desc_adj
= 1;
5268 if (!add_symbol_adjust (eh
, info
))
5271 p
= &eh
->u
.next_dot_sym
;
5276 /* Undo hash table changes when an --as-needed input file is determined
5277 not to be needed. */
5280 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5281 struct bfd_link_info
*info
,
5282 enum notice_asneeded_action act
)
5284 if (act
== notice_not_needed
)
5286 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5291 htab
->dot_syms
= NULL
;
5293 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5296 /* If --just-symbols against a final linked binary, then assume we need
5297 toc adjusting stubs when calling functions defined there. */
5300 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5302 if ((sec
->flags
& SEC_CODE
) != 0
5303 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5304 && is_ppc64_elf (sec
->owner
))
5306 if (abiversion (sec
->owner
) >= 2
5307 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5308 sec
->has_toc_reloc
= 1;
5310 _bfd_elf_link_just_syms (sec
, info
);
5313 static struct plt_entry
**
5314 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5315 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5317 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5318 struct plt_entry
**local_plt
;
5319 unsigned char *local_got_tls_masks
;
5321 if (local_got_ents
== NULL
)
5323 bfd_size_type size
= symtab_hdr
->sh_info
;
5325 size
*= (sizeof (*local_got_ents
)
5326 + sizeof (*local_plt
)
5327 + sizeof (*local_got_tls_masks
));
5328 local_got_ents
= bfd_zalloc (abfd
, size
);
5329 if (local_got_ents
== NULL
)
5331 elf_local_got_ents (abfd
) = local_got_ents
;
5334 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5336 struct got_entry
*ent
;
5338 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5339 if (ent
->addend
== r_addend
5340 && ent
->owner
== abfd
5341 && ent
->tls_type
== tls_type
)
5345 bfd_size_type amt
= sizeof (*ent
);
5346 ent
= bfd_alloc (abfd
, amt
);
5349 ent
->next
= local_got_ents
[r_symndx
];
5350 ent
->addend
= r_addend
;
5352 ent
->tls_type
= tls_type
;
5353 ent
->is_indirect
= FALSE
;
5354 ent
->got
.refcount
= 0;
5355 local_got_ents
[r_symndx
] = ent
;
5357 ent
->got
.refcount
+= 1;
5360 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5361 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5362 local_got_tls_masks
[r_symndx
] |= tls_type
;
5364 return local_plt
+ r_symndx
;
5368 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5370 struct plt_entry
*ent
;
5372 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5373 if (ent
->addend
== addend
)
5377 bfd_size_type amt
= sizeof (*ent
);
5378 ent
= bfd_alloc (abfd
, amt
);
5382 ent
->addend
= addend
;
5383 ent
->plt
.refcount
= 0;
5386 ent
->plt
.refcount
+= 1;
5391 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5393 return (r_type
== R_PPC64_REL24
5394 || r_type
== R_PPC64_REL14
5395 || r_type
== R_PPC64_REL14_BRTAKEN
5396 || r_type
== R_PPC64_REL14_BRNTAKEN
5397 || r_type
== R_PPC64_ADDR24
5398 || r_type
== R_PPC64_ADDR14
5399 || r_type
== R_PPC64_ADDR14_BRTAKEN
5400 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5403 /* Look through the relocs for a section during the first phase, and
5404 calculate needed space in the global offset table, procedure
5405 linkage table, and dynamic reloc sections. */
5408 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5409 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5411 struct ppc_link_hash_table
*htab
;
5412 Elf_Internal_Shdr
*symtab_hdr
;
5413 struct elf_link_hash_entry
**sym_hashes
;
5414 const Elf_Internal_Rela
*rel
;
5415 const Elf_Internal_Rela
*rel_end
;
5417 struct elf_link_hash_entry
*tga
, *dottga
;
5420 if (bfd_link_relocatable (info
))
5423 /* Don't do anything special with non-loaded, non-alloced sections.
5424 In particular, any relocs in such sections should not affect GOT
5425 and PLT reference counting (ie. we don't allow them to create GOT
5426 or PLT entries), there's no possibility or desire to optimize TLS
5427 relocs, and there's not much point in propagating relocs to shared
5428 libs that the dynamic linker won't relocate. */
5429 if ((sec
->flags
& SEC_ALLOC
) == 0)
5432 BFD_ASSERT (is_ppc64_elf (abfd
));
5434 htab
= ppc_hash_table (info
);
5438 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5439 FALSE
, FALSE
, TRUE
);
5440 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5441 FALSE
, FALSE
, TRUE
);
5442 symtab_hdr
= &elf_symtab_hdr (abfd
);
5443 sym_hashes
= elf_sym_hashes (abfd
);
5445 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5446 rel_end
= relocs
+ sec
->reloc_count
;
5447 for (rel
= relocs
; rel
< rel_end
; rel
++)
5449 unsigned long r_symndx
;
5450 struct elf_link_hash_entry
*h
;
5451 enum elf_ppc64_reloc_type r_type
;
5453 struct _ppc64_elf_section_data
*ppc64_sec
;
5454 struct plt_entry
**ifunc
, **plt_list
;
5456 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5457 if (r_symndx
< symtab_hdr
->sh_info
)
5461 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5462 h
= elf_follow_link (h
);
5464 if (h
== htab
->elf
.hgot
)
5465 sec
->has_toc_reloc
= 1;
5472 if (h
->type
== STT_GNU_IFUNC
)
5475 ifunc
= &h
->plt
.plist
;
5480 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5485 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5487 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5488 rel
->r_addend
, PLT_IFUNC
);
5494 r_type
= ELF64_R_TYPE (rel
->r_info
);
5499 /* These special tls relocs tie a call to __tls_get_addr with
5500 its parameter symbol. */
5503 case R_PPC64_GOT_TLSLD16
:
5504 case R_PPC64_GOT_TLSLD16_LO
:
5505 case R_PPC64_GOT_TLSLD16_HI
:
5506 case R_PPC64_GOT_TLSLD16_HA
:
5507 tls_type
= TLS_TLS
| TLS_LD
;
5510 case R_PPC64_GOT_TLSGD16
:
5511 case R_PPC64_GOT_TLSGD16_LO
:
5512 case R_PPC64_GOT_TLSGD16_HI
:
5513 case R_PPC64_GOT_TLSGD16_HA
:
5514 tls_type
= TLS_TLS
| TLS_GD
;
5517 case R_PPC64_GOT_TPREL16_DS
:
5518 case R_PPC64_GOT_TPREL16_LO_DS
:
5519 case R_PPC64_GOT_TPREL16_HI
:
5520 case R_PPC64_GOT_TPREL16_HA
:
5521 if (bfd_link_dll (info
))
5522 info
->flags
|= DF_STATIC_TLS
;
5523 tls_type
= TLS_TLS
| TLS_TPREL
;
5526 case R_PPC64_GOT_DTPREL16_DS
:
5527 case R_PPC64_GOT_DTPREL16_LO_DS
:
5528 case R_PPC64_GOT_DTPREL16_HI
:
5529 case R_PPC64_GOT_DTPREL16_HA
:
5530 tls_type
= TLS_TLS
| TLS_DTPREL
;
5532 sec
->has_tls_reloc
= 1;
5536 case R_PPC64_GOT16_DS
:
5537 case R_PPC64_GOT16_HA
:
5538 case R_PPC64_GOT16_HI
:
5539 case R_PPC64_GOT16_LO
:
5540 case R_PPC64_GOT16_LO_DS
:
5541 /* This symbol requires a global offset table entry. */
5542 sec
->has_toc_reloc
= 1;
5543 if (r_type
== R_PPC64_GOT_TLSLD16
5544 || r_type
== R_PPC64_GOT_TLSGD16
5545 || r_type
== R_PPC64_GOT_TPREL16_DS
5546 || r_type
== R_PPC64_GOT_DTPREL16_DS
5547 || r_type
== R_PPC64_GOT16
5548 || r_type
== R_PPC64_GOT16_DS
)
5550 htab
->do_multi_toc
= 1;
5551 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5554 if (ppc64_elf_tdata (abfd
)->got
== NULL
5555 && !create_got_section (abfd
, info
))
5560 struct ppc_link_hash_entry
*eh
;
5561 struct got_entry
*ent
;
5563 eh
= (struct ppc_link_hash_entry
*) h
;
5564 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5565 if (ent
->addend
== rel
->r_addend
5566 && ent
->owner
== abfd
5567 && ent
->tls_type
== tls_type
)
5571 bfd_size_type amt
= sizeof (*ent
);
5572 ent
= bfd_alloc (abfd
, amt
);
5575 ent
->next
= eh
->elf
.got
.glist
;
5576 ent
->addend
= rel
->r_addend
;
5578 ent
->tls_type
= tls_type
;
5579 ent
->is_indirect
= FALSE
;
5580 ent
->got
.refcount
= 0;
5581 eh
->elf
.got
.glist
= ent
;
5583 ent
->got
.refcount
+= 1;
5584 eh
->tls_mask
|= tls_type
;
5587 /* This is a global offset table entry for a local symbol. */
5588 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5589 rel
->r_addend
, tls_type
))
5592 /* We may also need a plt entry if the symbol turns out to be
5594 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5596 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5601 case R_PPC64_PLT16_HA
:
5602 case R_PPC64_PLT16_HI
:
5603 case R_PPC64_PLT16_LO
:
5606 /* This symbol requires a procedure linkage table entry. */
5611 if (h
->root
.root
.string
[0] == '.'
5612 && h
->root
.root
.string
[1] != '\0')
5613 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5614 plt_list
= &h
->plt
.plist
;
5616 if (plt_list
== NULL
)
5618 /* It does not make sense to have a procedure linkage
5619 table entry for a non-ifunc local symbol. */
5620 info
->callbacks
->einfo
5621 /* xgettext:c-format */
5622 (_("%H: %s reloc against local symbol\n"),
5623 abfd
, sec
, rel
->r_offset
,
5624 ppc64_elf_howto_table
[r_type
]->name
);
5625 bfd_set_error (bfd_error_bad_value
);
5628 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5632 /* The following relocations don't need to propagate the
5633 relocation if linking a shared object since they are
5634 section relative. */
5635 case R_PPC64_SECTOFF
:
5636 case R_PPC64_SECTOFF_LO
:
5637 case R_PPC64_SECTOFF_HI
:
5638 case R_PPC64_SECTOFF_HA
:
5639 case R_PPC64_SECTOFF_DS
:
5640 case R_PPC64_SECTOFF_LO_DS
:
5641 case R_PPC64_DTPREL16
:
5642 case R_PPC64_DTPREL16_LO
:
5643 case R_PPC64_DTPREL16_HI
:
5644 case R_PPC64_DTPREL16_HA
:
5645 case R_PPC64_DTPREL16_DS
:
5646 case R_PPC64_DTPREL16_LO_DS
:
5647 case R_PPC64_DTPREL16_HIGH
:
5648 case R_PPC64_DTPREL16_HIGHA
:
5649 case R_PPC64_DTPREL16_HIGHER
:
5650 case R_PPC64_DTPREL16_HIGHERA
:
5651 case R_PPC64_DTPREL16_HIGHEST
:
5652 case R_PPC64_DTPREL16_HIGHESTA
:
5657 case R_PPC64_REL16_LO
:
5658 case R_PPC64_REL16_HI
:
5659 case R_PPC64_REL16_HA
:
5660 case R_PPC64_REL16DX_HA
:
5663 /* Not supported as a dynamic relocation. */
5664 case R_PPC64_ADDR64_LOCAL
:
5665 if (bfd_link_pic (info
))
5667 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5669 /* xgettext:c-format */
5670 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5671 "in shared libraries and PIEs\n"),
5672 abfd
, sec
, rel
->r_offset
,
5673 ppc64_elf_howto_table
[r_type
]->name
);
5674 bfd_set_error (bfd_error_bad_value
);
5680 case R_PPC64_TOC16_DS
:
5681 htab
->do_multi_toc
= 1;
5682 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5684 case R_PPC64_TOC16_LO
:
5685 case R_PPC64_TOC16_HI
:
5686 case R_PPC64_TOC16_HA
:
5687 case R_PPC64_TOC16_LO_DS
:
5688 sec
->has_toc_reloc
= 1;
5695 /* This relocation describes the C++ object vtable hierarchy.
5696 Reconstruct it for later use during GC. */
5697 case R_PPC64_GNU_VTINHERIT
:
5698 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5702 /* This relocation describes which C++ vtable entries are actually
5703 used. Record for later use during GC. */
5704 case R_PPC64_GNU_VTENTRY
:
5705 BFD_ASSERT (h
!= NULL
);
5707 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5712 case R_PPC64_REL14_BRTAKEN
:
5713 case R_PPC64_REL14_BRNTAKEN
:
5715 asection
*dest
= NULL
;
5717 /* Heuristic: If jumping outside our section, chances are
5718 we are going to need a stub. */
5721 /* If the sym is weak it may be overridden later, so
5722 don't assume we know where a weak sym lives. */
5723 if (h
->root
.type
== bfd_link_hash_defined
)
5724 dest
= h
->root
.u
.def
.section
;
5728 Elf_Internal_Sym
*isym
;
5730 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5735 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5739 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5748 if (h
->root
.root
.string
[0] == '.'
5749 && h
->root
.root
.string
[1] != '\0')
5750 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5752 if (h
== tga
|| h
== dottga
)
5754 sec
->has_tls_reloc
= 1;
5756 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5757 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5758 /* We have a new-style __tls_get_addr call with
5762 /* Mark this section as having an old-style call. */
5763 sec
->has_tls_get_addr_call
= 1;
5765 plt_list
= &h
->plt
.plist
;
5768 /* We may need a .plt entry if the function this reloc
5769 refers to is in a shared lib. */
5771 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5775 case R_PPC64_ADDR14
:
5776 case R_PPC64_ADDR14_BRNTAKEN
:
5777 case R_PPC64_ADDR14_BRTAKEN
:
5778 case R_PPC64_ADDR24
:
5781 case R_PPC64_TPREL64
:
5782 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5783 if (bfd_link_dll (info
))
5784 info
->flags
|= DF_STATIC_TLS
;
5787 case R_PPC64_DTPMOD64
:
5788 if (rel
+ 1 < rel_end
5789 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5790 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5791 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5793 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5796 case R_PPC64_DTPREL64
:
5797 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5799 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5800 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5801 /* This is the second reloc of a dtpmod, dtprel pair.
5802 Don't mark with TLS_DTPREL. */
5806 sec
->has_tls_reloc
= 1;
5809 struct ppc_link_hash_entry
*eh
;
5810 eh
= (struct ppc_link_hash_entry
*) h
;
5811 eh
->tls_mask
|= tls_type
;
5814 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5815 rel
->r_addend
, tls_type
))
5818 ppc64_sec
= ppc64_elf_section_data (sec
);
5819 if (ppc64_sec
->sec_type
!= sec_toc
)
5823 /* One extra to simplify get_tls_mask. */
5824 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5825 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5826 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5828 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5829 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5830 if (ppc64_sec
->u
.toc
.add
== NULL
)
5832 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5833 ppc64_sec
->sec_type
= sec_toc
;
5835 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5836 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5837 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5839 /* Mark the second slot of a GD or LD entry.
5840 -1 to indicate GD and -2 to indicate LD. */
5841 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5842 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5843 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5844 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5847 case R_PPC64_TPREL16
:
5848 case R_PPC64_TPREL16_LO
:
5849 case R_PPC64_TPREL16_HI
:
5850 case R_PPC64_TPREL16_HA
:
5851 case R_PPC64_TPREL16_DS
:
5852 case R_PPC64_TPREL16_LO_DS
:
5853 case R_PPC64_TPREL16_HIGH
:
5854 case R_PPC64_TPREL16_HIGHA
:
5855 case R_PPC64_TPREL16_HIGHER
:
5856 case R_PPC64_TPREL16_HIGHERA
:
5857 case R_PPC64_TPREL16_HIGHEST
:
5858 case R_PPC64_TPREL16_HIGHESTA
:
5859 if (bfd_link_dll (info
))
5860 info
->flags
|= DF_STATIC_TLS
;
5863 case R_PPC64_ADDR64
:
5865 && rel
+ 1 < rel_end
5866 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5869 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5873 case R_PPC64_ADDR16
:
5874 case R_PPC64_ADDR16_DS
:
5875 case R_PPC64_ADDR16_HA
:
5876 case R_PPC64_ADDR16_HI
:
5877 case R_PPC64_ADDR16_HIGH
:
5878 case R_PPC64_ADDR16_HIGHA
:
5879 case R_PPC64_ADDR16_HIGHER
:
5880 case R_PPC64_ADDR16_HIGHERA
:
5881 case R_PPC64_ADDR16_HIGHEST
:
5882 case R_PPC64_ADDR16_HIGHESTA
:
5883 case R_PPC64_ADDR16_LO
:
5884 case R_PPC64_ADDR16_LO_DS
:
5885 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5886 && rel
->r_addend
== 0)
5888 /* We may need a .plt entry if this reloc refers to a
5889 function in a shared lib. */
5890 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5892 h
->pointer_equality_needed
= 1;
5899 case R_PPC64_ADDR32
:
5900 case R_PPC64_UADDR16
:
5901 case R_PPC64_UADDR32
:
5902 case R_PPC64_UADDR64
:
5904 if (h
!= NULL
&& !bfd_link_pic (info
))
5905 /* We may need a copy reloc. */
5908 /* Don't propagate .opd relocs. */
5909 if (NO_OPD_RELOCS
&& is_opd
)
5912 /* If we are creating a shared library, and this is a reloc
5913 against a global symbol, or a non PC relative reloc
5914 against a local symbol, then we need to copy the reloc
5915 into the shared library. However, if we are linking with
5916 -Bsymbolic, we do not need to copy a reloc against a
5917 global symbol which is defined in an object we are
5918 including in the link (i.e., DEF_REGULAR is set). At
5919 this point we have not seen all the input files, so it is
5920 possible that DEF_REGULAR is not set now but will be set
5921 later (it is never cleared). In case of a weak definition,
5922 DEF_REGULAR may be cleared later by a strong definition in
5923 a shared library. We account for that possibility below by
5924 storing information in the dyn_relocs field of the hash
5925 table entry. A similar situation occurs when creating
5926 shared libraries and symbol visibility changes render the
5929 If on the other hand, we are creating an executable, we
5930 may need to keep relocations for symbols satisfied by a
5931 dynamic library if we manage to avoid copy relocs for the
5934 if ((bfd_link_pic (info
)
5935 && (must_be_dyn_reloc (info
, r_type
)
5937 && (!SYMBOLIC_BIND (info
, h
)
5938 || h
->root
.type
== bfd_link_hash_defweak
5939 || !h
->def_regular
))))
5940 || (ELIMINATE_COPY_RELOCS
5941 && !bfd_link_pic (info
)
5943 && (h
->root
.type
== bfd_link_hash_defweak
5944 || !h
->def_regular
))
5945 || (!bfd_link_pic (info
)
5948 /* We must copy these reloc types into the output file.
5949 Create a reloc section in dynobj and make room for
5953 sreloc
= _bfd_elf_make_dynamic_reloc_section
5954 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5960 /* If this is a global symbol, we count the number of
5961 relocations we need for this symbol. */
5964 struct elf_dyn_relocs
*p
;
5965 struct elf_dyn_relocs
**head
;
5967 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5969 if (p
== NULL
|| p
->sec
!= sec
)
5971 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5981 if (!must_be_dyn_reloc (info
, r_type
))
5986 /* Track dynamic relocs needed for local syms too.
5987 We really need local syms available to do this
5989 struct ppc_dyn_relocs
*p
;
5990 struct ppc_dyn_relocs
**head
;
5991 bfd_boolean is_ifunc
;
5994 Elf_Internal_Sym
*isym
;
5996 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6001 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6005 vpp
= &elf_section_data (s
)->local_dynrel
;
6006 head
= (struct ppc_dyn_relocs
**) vpp
;
6007 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6009 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6011 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6013 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6019 p
->ifunc
= is_ifunc
;
6035 /* Merge backend specific data from an object file to the output
6036 object file when linking. */
6039 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6041 bfd
*obfd
= info
->output_bfd
;
6042 unsigned long iflags
, oflags
;
6044 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6047 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6050 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6053 iflags
= elf_elfheader (ibfd
)->e_flags
;
6054 oflags
= elf_elfheader (obfd
)->e_flags
;
6056 if (iflags
& ~EF_PPC64_ABI
)
6059 /* xgettext:c-format */
6060 (_("%pB uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6061 bfd_set_error (bfd_error_bad_value
);
6064 else if (iflags
!= oflags
&& iflags
!= 0)
6067 /* xgettext:c-format */
6068 (_("%pB: ABI version %ld is not compatible with ABI version %ld output"),
6069 ibfd
, iflags
, oflags
);
6070 bfd_set_error (bfd_error_bad_value
);
6074 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6076 /* Merge Tag_compatibility attributes and any common GNU ones. */
6077 _bfd_elf_merge_object_attributes (ibfd
, info
);
6083 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6085 /* Print normal ELF private data. */
6086 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6088 if (elf_elfheader (abfd
)->e_flags
!= 0)
6092 fprintf (file
, _("private flags = 0x%lx:"),
6093 elf_elfheader (abfd
)->e_flags
);
6095 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6096 fprintf (file
, _(" [abiv%ld]"),
6097 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6104 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6105 of the code entry point, and its section, which must be in the same
6106 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6109 opd_entry_value (asection
*opd_sec
,
6111 asection
**code_sec
,
6113 bfd_boolean in_code_sec
)
6115 bfd
*opd_bfd
= opd_sec
->owner
;
6116 Elf_Internal_Rela
*relocs
;
6117 Elf_Internal_Rela
*lo
, *hi
, *look
;
6120 /* No relocs implies we are linking a --just-symbols object, or looking
6121 at a final linked executable with addr2line or somesuch. */
6122 if (opd_sec
->reloc_count
== 0)
6124 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6126 if (contents
== NULL
)
6128 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6129 return (bfd_vma
) -1;
6130 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6133 /* PR 17512: file: 64b9dfbb. */
6134 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6135 return (bfd_vma
) -1;
6137 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6138 if (code_sec
!= NULL
)
6140 asection
*sec
, *likely
= NULL
;
6146 && val
< sec
->vma
+ sec
->size
)
6152 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6154 && (sec
->flags
& SEC_LOAD
) != 0
6155 && (sec
->flags
& SEC_ALLOC
) != 0)
6160 if (code_off
!= NULL
)
6161 *code_off
= val
- likely
->vma
;
6167 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6169 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6171 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6172 /* PR 17512: file: df8e1fd6. */
6174 return (bfd_vma
) -1;
6176 /* Go find the opd reloc at the sym address. */
6178 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6182 look
= lo
+ (hi
- lo
) / 2;
6183 if (look
->r_offset
< offset
)
6185 else if (look
->r_offset
> offset
)
6189 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6191 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6192 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6194 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6195 asection
*sec
= NULL
;
6197 if (symndx
>= symtab_hdr
->sh_info
6198 && elf_sym_hashes (opd_bfd
) != NULL
)
6200 struct elf_link_hash_entry
**sym_hashes
;
6201 struct elf_link_hash_entry
*rh
;
6203 sym_hashes
= elf_sym_hashes (opd_bfd
);
6204 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6207 rh
= elf_follow_link (rh
);
6208 if (rh
->root
.type
!= bfd_link_hash_defined
6209 && rh
->root
.type
!= bfd_link_hash_defweak
)
6211 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6213 val
= rh
->root
.u
.def
.value
;
6214 sec
= rh
->root
.u
.def
.section
;
6221 Elf_Internal_Sym
*sym
;
6223 if (symndx
< symtab_hdr
->sh_info
)
6225 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6228 size_t symcnt
= symtab_hdr
->sh_info
;
6229 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6234 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6240 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6246 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6249 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6250 val
= sym
->st_value
;
6253 val
+= look
->r_addend
;
6254 if (code_off
!= NULL
)
6256 if (code_sec
!= NULL
)
6258 if (in_code_sec
&& *code_sec
!= sec
)
6263 if (sec
->output_section
!= NULL
)
6264 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6273 /* If the ELF symbol SYM might be a function in SEC, return the
6274 function size and set *CODE_OFF to the function's entry point,
6275 otherwise return zero. */
6277 static bfd_size_type
6278 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6283 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6284 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6288 if (!(sym
->flags
& BSF_SYNTHETIC
))
6289 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6291 if (strcmp (sym
->section
->name
, ".opd") == 0)
6293 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6294 bfd_vma symval
= sym
->value
;
6297 && opd
->adjust
!= NULL
6298 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6300 /* opd_entry_value will use cached relocs that have been
6301 adjusted, but with raw symbols. That means both local
6302 and global symbols need adjusting. */
6303 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6309 if (opd_entry_value (sym
->section
, symval
,
6310 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6312 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6313 symbol. This size has nothing to do with the code size of the
6314 function, which is what we're supposed to return, but the
6315 code size isn't available without looking up the dot-sym.
6316 However, doing that would be a waste of time particularly
6317 since elf_find_function will look at the dot-sym anyway.
6318 Now, elf_find_function will keep the largest size of any
6319 function sym found at the code address of interest, so return
6320 1 here to avoid it incorrectly caching a larger function size
6321 for a small function. This does mean we return the wrong
6322 size for a new-ABI function of size 24, but all that does is
6323 disable caching for such functions. */
6329 if (sym
->section
!= sec
)
6331 *code_off
= sym
->value
;
6338 /* Return true if symbol is a strong function defined in an ELFv2
6339 object with st_other localentry bits of zero, ie. its local entry
6340 point coincides with its global entry point. */
6343 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6346 && h
->type
== STT_FUNC
6347 && h
->root
.type
== bfd_link_hash_defined
6348 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6349 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6350 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6351 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6354 /* Return true if symbol is defined in a regular object file. */
6357 is_static_defined (struct elf_link_hash_entry
*h
)
6359 return ((h
->root
.type
== bfd_link_hash_defined
6360 || h
->root
.type
== bfd_link_hash_defweak
)
6361 && h
->root
.u
.def
.section
!= NULL
6362 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6365 /* If FDH is a function descriptor symbol, return the associated code
6366 entry symbol if it is defined. Return NULL otherwise. */
6368 static struct ppc_link_hash_entry
*
6369 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6371 if (fdh
->is_func_descriptor
)
6373 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6374 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6375 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6381 /* If FH is a function code entry symbol, return the associated
6382 function descriptor symbol if it is defined. Return NULL otherwise. */
6384 static struct ppc_link_hash_entry
*
6385 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6388 && fh
->oh
->is_func_descriptor
)
6390 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6391 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6392 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6398 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6400 /* Garbage collect sections, after first dealing with dot-symbols. */
6403 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6405 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6407 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6409 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6410 htab
->need_func_desc_adj
= 0;
6412 return bfd_elf_gc_sections (abfd
, info
);
6415 /* Mark all our entry sym sections, both opd and code section. */
6418 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6420 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6421 struct bfd_sym_chain
*sym
;
6426 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6428 struct ppc_link_hash_entry
*eh
, *fh
;
6431 eh
= (struct ppc_link_hash_entry
*)
6432 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6435 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6436 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6439 fh
= defined_code_entry (eh
);
6442 sec
= fh
->elf
.root
.u
.def
.section
;
6443 sec
->flags
|= SEC_KEEP
;
6445 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6446 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6447 eh
->elf
.root
.u
.def
.value
,
6448 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6449 sec
->flags
|= SEC_KEEP
;
6451 sec
= eh
->elf
.root
.u
.def
.section
;
6452 sec
->flags
|= SEC_KEEP
;
6456 /* Mark sections containing dynamically referenced symbols. When
6457 building shared libraries, we must assume that any visible symbol is
6461 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6463 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6464 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6465 struct ppc_link_hash_entry
*fdh
;
6466 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6468 /* Dynamic linking info is on the func descriptor sym. */
6469 fdh
= defined_func_desc (eh
);
6473 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6474 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6475 && ((eh
->elf
.ref_dynamic
&& !eh
->elf
.forced_local
)
6476 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6477 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6478 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6479 && (!bfd_link_executable (info
)
6480 || info
->gc_keep_exported
6481 || info
->export_dynamic
6484 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6485 && (eh
->elf
.versioned
>= versioned
6486 || !bfd_hide_sym_by_version (info
->version_info
,
6487 eh
->elf
.root
.root
.string
)))))
6490 struct ppc_link_hash_entry
*fh
;
6492 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6494 /* Function descriptor syms cause the associated
6495 function code sym section to be marked. */
6496 fh
= defined_code_entry (eh
);
6499 code_sec
= fh
->elf
.root
.u
.def
.section
;
6500 code_sec
->flags
|= SEC_KEEP
;
6502 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6503 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6504 eh
->elf
.root
.u
.def
.value
,
6505 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6506 code_sec
->flags
|= SEC_KEEP
;
6512 /* Return the section that should be marked against GC for a given
6516 ppc64_elf_gc_mark_hook (asection
*sec
,
6517 struct bfd_link_info
*info
,
6518 Elf_Internal_Rela
*rel
,
6519 struct elf_link_hash_entry
*h
,
6520 Elf_Internal_Sym
*sym
)
6524 /* Syms return NULL if we're marking .opd, so we avoid marking all
6525 function sections, as all functions are referenced in .opd. */
6527 if (get_opd_info (sec
) != NULL
)
6532 enum elf_ppc64_reloc_type r_type
;
6533 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6535 r_type
= ELF64_R_TYPE (rel
->r_info
);
6538 case R_PPC64_GNU_VTINHERIT
:
6539 case R_PPC64_GNU_VTENTRY
:
6543 switch (h
->root
.type
)
6545 case bfd_link_hash_defined
:
6546 case bfd_link_hash_defweak
:
6547 eh
= (struct ppc_link_hash_entry
*) h
;
6548 fdh
= defined_func_desc (eh
);
6551 /* -mcall-aixdesc code references the dot-symbol on
6552 a call reloc. Mark the function descriptor too
6553 against garbage collection. */
6555 if (fdh
->elf
.is_weakalias
)
6556 weakdef (&fdh
->elf
)->mark
= 1;
6560 /* Function descriptor syms cause the associated
6561 function code sym section to be marked. */
6562 fh
= defined_code_entry (eh
);
6565 /* They also mark their opd section. */
6566 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6568 rsec
= fh
->elf
.root
.u
.def
.section
;
6570 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6571 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6572 eh
->elf
.root
.u
.def
.value
,
6573 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6574 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6576 rsec
= h
->root
.u
.def
.section
;
6579 case bfd_link_hash_common
:
6580 rsec
= h
->root
.u
.c
.p
->section
;
6584 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6590 struct _opd_sec_data
*opd
;
6592 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6593 opd
= get_opd_info (rsec
);
6594 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6598 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6605 /* The maximum size of .sfpr. */
6606 #define SFPR_MAX (218*4)
6608 struct sfpr_def_parms
6610 const char name
[12];
6611 unsigned char lo
, hi
;
6612 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6613 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6616 /* Auto-generate _save*, _rest* functions in .sfpr.
6617 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6621 sfpr_define (struct bfd_link_info
*info
,
6622 const struct sfpr_def_parms
*parm
,
6625 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6627 size_t len
= strlen (parm
->name
);
6628 bfd_boolean writing
= FALSE
;
6634 memcpy (sym
, parm
->name
, len
);
6637 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6639 struct ppc_link_hash_entry
*h
;
6641 sym
[len
+ 0] = i
/ 10 + '0';
6642 sym
[len
+ 1] = i
% 10 + '0';
6643 h
= (struct ppc_link_hash_entry
*)
6644 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6645 if (stub_sec
!= NULL
)
6648 && h
->elf
.root
.type
== bfd_link_hash_defined
6649 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6651 struct elf_link_hash_entry
*s
;
6653 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6654 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6657 if (s
->root
.type
== bfd_link_hash_new
6658 || (s
->root
.type
= bfd_link_hash_defined
6659 && s
->root
.u
.def
.section
== stub_sec
))
6661 s
->root
.type
= bfd_link_hash_defined
;
6662 s
->root
.u
.def
.section
= stub_sec
;
6663 s
->root
.u
.def
.value
= (stub_sec
->size
6664 + h
->elf
.root
.u
.def
.value
);
6667 s
->ref_regular_nonweak
= 1;
6668 s
->forced_local
= 1;
6670 s
->root
.linker_def
= 1;
6678 if (!h
->elf
.def_regular
)
6680 h
->elf
.root
.type
= bfd_link_hash_defined
;
6681 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6682 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6683 h
->elf
.type
= STT_FUNC
;
6684 h
->elf
.def_regular
= 1;
6686 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6688 if (htab
->sfpr
->contents
== NULL
)
6690 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6691 if (htab
->sfpr
->contents
== NULL
)
6698 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6700 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6702 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6703 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6711 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6713 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6718 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6720 p
= savegpr0 (abfd
, p
, r
);
6721 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6723 bfd_put_32 (abfd
, BLR
, p
);
6728 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6730 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6735 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6737 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6739 p
= restgpr0 (abfd
, p
, r
);
6740 bfd_put_32 (abfd
, MTLR_R0
, p
);
6744 p
= restgpr0 (abfd
, p
, 30);
6745 p
= restgpr0 (abfd
, p
, 31);
6747 bfd_put_32 (abfd
, BLR
, p
);
6752 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6754 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6759 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6761 p
= savegpr1 (abfd
, p
, r
);
6762 bfd_put_32 (abfd
, BLR
, p
);
6767 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6769 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6774 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6776 p
= restgpr1 (abfd
, p
, r
);
6777 bfd_put_32 (abfd
, BLR
, p
);
6782 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6784 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6789 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6791 p
= savefpr (abfd
, p
, r
);
6792 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6794 bfd_put_32 (abfd
, BLR
, p
);
6799 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6801 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6806 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6808 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6810 p
= restfpr (abfd
, p
, r
);
6811 bfd_put_32 (abfd
, MTLR_R0
, p
);
6815 p
= restfpr (abfd
, p
, 30);
6816 p
= restfpr (abfd
, p
, 31);
6818 bfd_put_32 (abfd
, BLR
, p
);
6823 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6825 p
= savefpr (abfd
, p
, r
);
6826 bfd_put_32 (abfd
, BLR
, p
);
6831 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6833 p
= restfpr (abfd
, p
, r
);
6834 bfd_put_32 (abfd
, BLR
, p
);
6839 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6841 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6843 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6848 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6850 p
= savevr (abfd
, p
, r
);
6851 bfd_put_32 (abfd
, BLR
, p
);
6856 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6858 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6860 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6865 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6867 p
= restvr (abfd
, p
, r
);
6868 bfd_put_32 (abfd
, BLR
, p
);
6872 /* Called via elf_link_hash_traverse to transfer dynamic linking
6873 information on function code symbol entries to their corresponding
6874 function descriptor symbol entries. */
6877 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6879 struct bfd_link_info
*info
;
6880 struct ppc_link_hash_table
*htab
;
6881 struct ppc_link_hash_entry
*fh
;
6882 struct ppc_link_hash_entry
*fdh
;
6883 bfd_boolean force_local
;
6885 fh
= (struct ppc_link_hash_entry
*) h
;
6886 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6892 if (fh
->elf
.root
.root
.string
[0] != '.'
6893 || fh
->elf
.root
.root
.string
[1] == '\0')
6897 htab
= ppc_hash_table (info
);
6901 /* Find the corresponding function descriptor symbol. */
6902 fdh
= lookup_fdh (fh
, htab
);
6904 /* Resolve undefined references to dot-symbols as the value
6905 in the function descriptor, if we have one in a regular object.
6906 This is to satisfy cases like ".quad .foo". Calls to functions
6907 in dynamic objects are handled elsewhere. */
6908 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
6909 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6910 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
6911 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6912 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6913 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6914 fdh
->elf
.root
.u
.def
.value
,
6915 &fh
->elf
.root
.u
.def
.section
,
6916 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6918 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6919 fh
->elf
.forced_local
= 1;
6920 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6921 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6924 if (!fh
->elf
.dynamic
)
6926 struct plt_entry
*ent
;
6928 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6929 if (ent
->plt
.refcount
> 0)
6935 /* Create a descriptor as undefined if necessary. */
6937 && !bfd_link_executable (info
)
6938 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6939 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6941 fdh
= make_fdh (info
, fh
);
6946 /* We can't support overriding of symbols on a fake descriptor. */
6949 && (fh
->elf
.root
.type
== bfd_link_hash_defined
6950 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
6951 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6953 /* Transfer dynamic linking information to the function descriptor. */
6956 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6957 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6958 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6959 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6960 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
6961 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
6962 || fh
->elf
.type
== STT_FUNC
6963 || fh
->elf
.type
== STT_GNU_IFUNC
);
6964 move_plt_plist (fh
, fdh
);
6966 if (!fdh
->elf
.forced_local
6967 && fh
->elf
.dynindx
!= -1)
6968 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6972 /* Now that the info is on the function descriptor, clear the
6973 function code sym info. Any function code syms for which we
6974 don't have a definition in a regular file, we force local.
6975 This prevents a shared library from exporting syms that have
6976 been imported from another library. Function code syms that
6977 are really in the library we must leave global to prevent the
6978 linker dragging in a definition from a static library. */
6979 force_local
= (!fh
->elf
.def_regular
6981 || !fdh
->elf
.def_regular
6982 || fdh
->elf
.forced_local
);
6983 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6988 static const struct sfpr_def_parms save_res_funcs
[] =
6990 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6991 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6992 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6993 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6994 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6995 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6996 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6997 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6998 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6999 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7000 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7001 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7004 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7005 this hook to a) provide some gcc support functions, and b) transfer
7006 dynamic linking information gathered so far on function code symbol
7007 entries, to their corresponding function descriptor symbol entries. */
7010 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7011 struct bfd_link_info
*info
)
7013 struct ppc_link_hash_table
*htab
;
7015 htab
= ppc_hash_table (info
);
7019 /* Provide any missing _save* and _rest* functions. */
7020 if (htab
->sfpr
!= NULL
)
7024 htab
->sfpr
->size
= 0;
7025 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7026 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7028 if (htab
->sfpr
->size
== 0)
7029 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7032 if (bfd_link_relocatable (info
))
7035 if (htab
->elf
.hgot
!= NULL
)
7037 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7038 /* Make .TOC. defined so as to prevent it being made dynamic.
7039 The wrong value here is fixed later in ppc64_elf_set_toc. */
7040 if (!htab
->elf
.hgot
->def_regular
7041 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7043 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7044 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7045 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7046 htab
->elf
.hgot
->def_regular
= 1;
7047 htab
->elf
.hgot
->root
.linker_def
= 1;
7049 htab
->elf
.hgot
->type
= STT_OBJECT
;
7050 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7054 if (htab
->need_func_desc_adj
)
7056 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7057 htab
->need_func_desc_adj
= 0;
7063 /* Find dynamic relocs for H that apply to read-only sections. */
7066 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7068 struct ppc_link_hash_entry
*eh
;
7069 struct elf_dyn_relocs
*p
;
7071 eh
= (struct ppc_link_hash_entry
*) h
;
7072 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7074 asection
*s
= p
->sec
->output_section
;
7076 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7082 /* Return true if we have dynamic relocs against H or any of its weak
7083 aliases, that apply to read-only sections. Cannot be used after
7084 size_dynamic_sections. */
7087 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7089 struct ppc_link_hash_entry
*eh
;
7091 eh
= (struct ppc_link_hash_entry
*) h
;
7094 if (readonly_dynrelocs (&eh
->elf
))
7096 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.u
.alias
;
7097 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7102 /* Return whether EH has pc-relative dynamic relocs. */
7105 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7107 struct elf_dyn_relocs
*p
;
7109 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7110 if (p
->pc_count
!= 0)
7115 /* Return true if a global entry stub will be created for H. Valid
7116 for ELFv2 before plt entries have been allocated. */
7119 global_entry_stub (struct elf_link_hash_entry
*h
)
7121 struct plt_entry
*pent
;
7123 if (!h
->pointer_equality_needed
7127 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7128 if (pent
->plt
.refcount
> 0
7129 && pent
->addend
== 0)
7135 /* Adjust a symbol defined by a dynamic object and referenced by a
7136 regular object. The current definition is in some section of the
7137 dynamic object, but we're not including those sections. We have to
7138 change the definition to something the rest of the link can
7142 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7143 struct elf_link_hash_entry
*h
)
7145 struct ppc_link_hash_table
*htab
;
7148 htab
= ppc_hash_table (info
);
7152 /* Deal with function syms. */
7153 if (h
->type
== STT_FUNC
7154 || h
->type
== STT_GNU_IFUNC
7157 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7158 || SYMBOL_CALLS_LOCAL (info
, h
)
7159 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7160 /* Discard dyn_relocs when non-pic if we've decided that a
7161 function symbol is local and not an ifunc. We keep dynamic
7162 relocs for ifuncs when local rather than always emitting a
7163 plt call stub for them and defining the symbol on the call
7164 stub. We can't do that for ELFv1 anyway (a function symbol
7165 is defined on a descriptor, not code) and it can be faster at
7166 run-time due to not needing to bounce through a stub. The
7167 dyn_relocs for ifuncs will be applied even in a static
7169 if (!bfd_link_pic (info
)
7170 && h
->type
!= STT_GNU_IFUNC
7172 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7174 /* Clear procedure linkage table information for any symbol that
7175 won't need a .plt entry. */
7176 struct plt_entry
*ent
;
7177 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7178 if (ent
->plt
.refcount
> 0)
7181 || (h
->type
!= STT_GNU_IFUNC
&& local
))
7183 h
->plt
.plist
= NULL
;
7185 h
->pointer_equality_needed
= 0;
7187 else if (abiversion (info
->output_bfd
) >= 2)
7189 /* Taking a function's address in a read/write section
7190 doesn't require us to define the function symbol in the
7191 executable on a global entry stub. A dynamic reloc can
7192 be used instead. The reason we prefer a few more dynamic
7193 relocs is that calling via a global entry stub costs a
7194 few more instructions, and pointer_equality_needed causes
7195 extra work in ld.so when resolving these symbols. */
7196 if (global_entry_stub (h
))
7198 if (!readonly_dynrelocs (h
))
7200 h
->pointer_equality_needed
= 0;
7201 /* If we haven't seen a branch reloc then we don't need
7204 h
->plt
.plist
= NULL
;
7206 else if (!bfd_link_pic (info
))
7207 /* We are going to be defining the function symbol on the
7208 plt stub, so no dyn_relocs needed when non-pic. */
7209 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7212 /* ELFv2 function symbols can't have copy relocs. */
7215 else if (!h
->needs_plt
7216 && !readonly_dynrelocs (h
))
7218 /* If we haven't seen a branch reloc then we don't need a
7220 h
->plt
.plist
= NULL
;
7221 h
->pointer_equality_needed
= 0;
7226 h
->plt
.plist
= NULL
;
7228 /* If this is a weak symbol, and there is a real definition, the
7229 processor independent code will have arranged for us to see the
7230 real definition first, and we can just use the same value. */
7231 if (h
->is_weakalias
)
7233 struct elf_link_hash_entry
*def
= weakdef (h
);
7234 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7235 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7236 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7237 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
7238 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
7239 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7243 /* If we are creating a shared library, we must presume that the
7244 only references to the symbol are via the global offset table.
7245 For such cases we need not do anything here; the relocations will
7246 be handled correctly by relocate_section. */
7247 if (bfd_link_pic (info
))
7250 /* If there are no references to this symbol that do not use the
7251 GOT, we don't need to generate a copy reloc. */
7252 if (!h
->non_got_ref
)
7255 /* Don't generate a copy reloc for symbols defined in the executable. */
7256 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7258 /* If -z nocopyreloc was given, don't generate them either. */
7259 || info
->nocopyreloc
7261 /* If we don't find any dynamic relocs in read-only sections, then
7262 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7263 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7265 /* Protected variables do not work with .dynbss. The copy in
7266 .dynbss won't be used by the shared library with the protected
7267 definition for the variable. Text relocations are preferable
7268 to an incorrect program. */
7269 || h
->protected_def
)
7272 if (h
->plt
.plist
!= NULL
)
7274 /* We should never get here, but unfortunately there are versions
7275 of gcc out there that improperly (for this ABI) put initialized
7276 function pointers, vtable refs and suchlike in read-only
7277 sections. Allow them to proceed, but warn that this might
7278 break at runtime. */
7279 info
->callbacks
->einfo
7280 (_("%P: copy reloc against `%pT' requires lazy plt linking; "
7281 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7282 h
->root
.root
.string
);
7285 /* This is a reference to a symbol defined by a dynamic object which
7286 is not a function. */
7288 /* We must allocate the symbol in our .dynbss section, which will
7289 become part of the .bss section of the executable. There will be
7290 an entry for this symbol in the .dynsym section. The dynamic
7291 object will contain position independent code, so all references
7292 from the dynamic object to this symbol will go through the global
7293 offset table. The dynamic linker will use the .dynsym entry to
7294 determine the address it must put in the global offset table, so
7295 both the dynamic object and the regular object will refer to the
7296 same memory location for the variable. */
7297 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7299 s
= htab
->elf
.sdynrelro
;
7300 srel
= htab
->elf
.sreldynrelro
;
7304 s
= htab
->elf
.sdynbss
;
7305 srel
= htab
->elf
.srelbss
;
7307 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7309 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7310 linker to copy the initial value out of the dynamic object
7311 and into the runtime process image. */
7312 srel
->size
+= sizeof (Elf64_External_Rela
);
7316 /* We no longer want dyn_relocs. */
7317 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7318 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7321 /* If given a function descriptor symbol, hide both the function code
7322 sym and the descriptor. */
7324 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7325 struct elf_link_hash_entry
*h
,
7326 bfd_boolean force_local
)
7328 struct ppc_link_hash_entry
*eh
;
7329 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7331 eh
= (struct ppc_link_hash_entry
*) h
;
7332 if (eh
->is_func_descriptor
)
7334 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7339 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7342 /* We aren't supposed to use alloca in BFD because on
7343 systems which do not have alloca the version in libiberty
7344 calls xmalloc, which might cause the program to crash
7345 when it runs out of memory. This function doesn't have a
7346 return status, so there's no way to gracefully return an
7347 error. So cheat. We know that string[-1] can be safely
7348 accessed; It's either a string in an ELF string table,
7349 or allocated in an objalloc structure. */
7351 p
= eh
->elf
.root
.root
.string
- 1;
7354 fh
= (struct ppc_link_hash_entry
*)
7355 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7358 /* Unfortunately, if it so happens that the string we were
7359 looking for was allocated immediately before this string,
7360 then we overwrote the string terminator. That's the only
7361 reason the lookup should fail. */
7364 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7365 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7367 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7368 fh
= (struct ppc_link_hash_entry
*)
7369 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7378 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7383 get_sym_h (struct elf_link_hash_entry
**hp
,
7384 Elf_Internal_Sym
**symp
,
7386 unsigned char **tls_maskp
,
7387 Elf_Internal_Sym
**locsymsp
,
7388 unsigned long r_symndx
,
7391 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7393 if (r_symndx
>= symtab_hdr
->sh_info
)
7395 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7396 struct elf_link_hash_entry
*h
;
7398 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7399 h
= elf_follow_link (h
);
7407 if (symsecp
!= NULL
)
7409 asection
*symsec
= NULL
;
7410 if (h
->root
.type
== bfd_link_hash_defined
7411 || h
->root
.type
== bfd_link_hash_defweak
)
7412 symsec
= h
->root
.u
.def
.section
;
7416 if (tls_maskp
!= NULL
)
7418 struct ppc_link_hash_entry
*eh
;
7420 eh
= (struct ppc_link_hash_entry
*) h
;
7421 *tls_maskp
= &eh
->tls_mask
;
7426 Elf_Internal_Sym
*sym
;
7427 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7429 if (locsyms
== NULL
)
7431 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7432 if (locsyms
== NULL
)
7433 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7434 symtab_hdr
->sh_info
,
7435 0, NULL
, NULL
, NULL
);
7436 if (locsyms
== NULL
)
7438 *locsymsp
= locsyms
;
7440 sym
= locsyms
+ r_symndx
;
7448 if (symsecp
!= NULL
)
7449 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7451 if (tls_maskp
!= NULL
)
7453 struct got_entry
**lgot_ents
;
7454 unsigned char *tls_mask
;
7457 lgot_ents
= elf_local_got_ents (ibfd
);
7458 if (lgot_ents
!= NULL
)
7460 struct plt_entry
**local_plt
= (struct plt_entry
**)
7461 (lgot_ents
+ symtab_hdr
->sh_info
);
7462 unsigned char *lgot_masks
= (unsigned char *)
7463 (local_plt
+ symtab_hdr
->sh_info
);
7464 tls_mask
= &lgot_masks
[r_symndx
];
7466 *tls_maskp
= tls_mask
;
7472 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7473 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7474 type suitable for optimization, and 1 otherwise. */
7477 get_tls_mask (unsigned char **tls_maskp
,
7478 unsigned long *toc_symndx
,
7479 bfd_vma
*toc_addend
,
7480 Elf_Internal_Sym
**locsymsp
,
7481 const Elf_Internal_Rela
*rel
,
7484 unsigned long r_symndx
;
7486 struct elf_link_hash_entry
*h
;
7487 Elf_Internal_Sym
*sym
;
7491 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7492 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7495 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7497 || ppc64_elf_section_data (sec
) == NULL
7498 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7501 /* Look inside a TOC section too. */
7504 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7505 off
= h
->root
.u
.def
.value
;
7508 off
= sym
->st_value
;
7509 off
+= rel
->r_addend
;
7510 BFD_ASSERT (off
% 8 == 0);
7511 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7512 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7513 if (toc_symndx
!= NULL
)
7514 *toc_symndx
= r_symndx
;
7515 if (toc_addend
!= NULL
)
7516 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7517 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7519 if ((h
== NULL
|| is_static_defined (h
))
7520 && (next_r
== -1 || next_r
== -2))
7525 /* Find (or create) an entry in the tocsave hash table. */
7527 static struct tocsave_entry
*
7528 tocsave_find (struct ppc_link_hash_table
*htab
,
7529 enum insert_option insert
,
7530 Elf_Internal_Sym
**local_syms
,
7531 const Elf_Internal_Rela
*irela
,
7534 unsigned long r_indx
;
7535 struct elf_link_hash_entry
*h
;
7536 Elf_Internal_Sym
*sym
;
7537 struct tocsave_entry ent
, *p
;
7539 struct tocsave_entry
**slot
;
7541 r_indx
= ELF64_R_SYM (irela
->r_info
);
7542 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7544 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7547 (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7552 ent
.offset
= h
->root
.u
.def
.value
;
7554 ent
.offset
= sym
->st_value
;
7555 ent
.offset
+= irela
->r_addend
;
7557 hash
= tocsave_htab_hash (&ent
);
7558 slot
= ((struct tocsave_entry
**)
7559 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7565 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7574 /* Adjust all global syms defined in opd sections. In gcc generated
7575 code for the old ABI, these will already have been done. */
7578 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7580 struct ppc_link_hash_entry
*eh
;
7582 struct _opd_sec_data
*opd
;
7584 if (h
->root
.type
== bfd_link_hash_indirect
)
7587 if (h
->root
.type
!= bfd_link_hash_defined
7588 && h
->root
.type
!= bfd_link_hash_defweak
)
7591 eh
= (struct ppc_link_hash_entry
*) h
;
7592 if (eh
->adjust_done
)
7595 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7596 opd
= get_opd_info (sym_sec
);
7597 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7599 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7602 /* This entry has been deleted. */
7603 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7606 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7607 if (discarded_section (dsec
))
7609 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7613 eh
->elf
.root
.u
.def
.value
= 0;
7614 eh
->elf
.root
.u
.def
.section
= dsec
;
7617 eh
->elf
.root
.u
.def
.value
+= adjust
;
7618 eh
->adjust_done
= 1;
7623 /* Handles decrementing dynamic reloc counts for the reloc specified by
7624 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7625 have already been determined. */
7628 dec_dynrel_count (bfd_vma r_info
,
7630 struct bfd_link_info
*info
,
7631 Elf_Internal_Sym
**local_syms
,
7632 struct elf_link_hash_entry
*h
,
7633 Elf_Internal_Sym
*sym
)
7635 enum elf_ppc64_reloc_type r_type
;
7636 asection
*sym_sec
= NULL
;
7638 /* Can this reloc be dynamic? This switch, and later tests here
7639 should be kept in sync with the code in check_relocs. */
7640 r_type
= ELF64_R_TYPE (r_info
);
7646 case R_PPC64_TPREL16
:
7647 case R_PPC64_TPREL16_LO
:
7648 case R_PPC64_TPREL16_HI
:
7649 case R_PPC64_TPREL16_HA
:
7650 case R_PPC64_TPREL16_DS
:
7651 case R_PPC64_TPREL16_LO_DS
:
7652 case R_PPC64_TPREL16_HIGH
:
7653 case R_PPC64_TPREL16_HIGHA
:
7654 case R_PPC64_TPREL16_HIGHER
:
7655 case R_PPC64_TPREL16_HIGHERA
:
7656 case R_PPC64_TPREL16_HIGHEST
:
7657 case R_PPC64_TPREL16_HIGHESTA
:
7658 case R_PPC64_TPREL64
:
7659 case R_PPC64_DTPMOD64
:
7660 case R_PPC64_DTPREL64
:
7661 case R_PPC64_ADDR64
:
7665 case R_PPC64_ADDR14
:
7666 case R_PPC64_ADDR14_BRNTAKEN
:
7667 case R_PPC64_ADDR14_BRTAKEN
:
7668 case R_PPC64_ADDR16
:
7669 case R_PPC64_ADDR16_DS
:
7670 case R_PPC64_ADDR16_HA
:
7671 case R_PPC64_ADDR16_HI
:
7672 case R_PPC64_ADDR16_HIGH
:
7673 case R_PPC64_ADDR16_HIGHA
:
7674 case R_PPC64_ADDR16_HIGHER
:
7675 case R_PPC64_ADDR16_HIGHERA
:
7676 case R_PPC64_ADDR16_HIGHEST
:
7677 case R_PPC64_ADDR16_HIGHESTA
:
7678 case R_PPC64_ADDR16_LO
:
7679 case R_PPC64_ADDR16_LO_DS
:
7680 case R_PPC64_ADDR24
:
7681 case R_PPC64_ADDR32
:
7682 case R_PPC64_UADDR16
:
7683 case R_PPC64_UADDR32
:
7684 case R_PPC64_UADDR64
:
7689 if (local_syms
!= NULL
)
7691 unsigned long r_symndx
;
7692 bfd
*ibfd
= sec
->owner
;
7694 r_symndx
= ELF64_R_SYM (r_info
);
7695 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7699 if ((bfd_link_pic (info
)
7700 && (must_be_dyn_reloc (info
, r_type
)
7702 && (!SYMBOLIC_BIND (info
, h
)
7703 || h
->root
.type
== bfd_link_hash_defweak
7704 || !h
->def_regular
))))
7705 || (ELIMINATE_COPY_RELOCS
7706 && !bfd_link_pic (info
)
7708 && (h
->root
.type
== bfd_link_hash_defweak
7709 || !h
->def_regular
)))
7716 struct elf_dyn_relocs
*p
;
7717 struct elf_dyn_relocs
**pp
;
7718 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7720 /* elf_gc_sweep may have already removed all dyn relocs associated
7721 with local syms for a given section. Also, symbol flags are
7722 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7723 report a dynreloc miscount. */
7724 if (*pp
== NULL
&& info
->gc_sections
)
7727 while ((p
= *pp
) != NULL
)
7731 if (!must_be_dyn_reloc (info
, r_type
))
7743 struct ppc_dyn_relocs
*p
;
7744 struct ppc_dyn_relocs
**pp
;
7746 bfd_boolean is_ifunc
;
7748 if (local_syms
== NULL
)
7749 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7750 if (sym_sec
== NULL
)
7753 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7754 pp
= (struct ppc_dyn_relocs
**) vpp
;
7756 if (*pp
== NULL
&& info
->gc_sections
)
7759 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7760 while ((p
= *pp
) != NULL
)
7762 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7773 /* xgettext:c-format */
7774 _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"),
7776 bfd_set_error (bfd_error_bad_value
);
7780 /* Remove unused Official Procedure Descriptor entries. Currently we
7781 only remove those associated with functions in discarded link-once
7782 sections, or weakly defined functions that have been overridden. It
7783 would be possible to remove many more entries for statically linked
7787 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7790 bfd_boolean some_edited
= FALSE
;
7791 asection
*need_pad
= NULL
;
7792 struct ppc_link_hash_table
*htab
;
7794 htab
= ppc_hash_table (info
);
7798 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7801 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7802 Elf_Internal_Shdr
*symtab_hdr
;
7803 Elf_Internal_Sym
*local_syms
;
7804 struct _opd_sec_data
*opd
;
7805 bfd_boolean need_edit
, add_aux_fields
, broken
;
7806 bfd_size_type cnt_16b
= 0;
7808 if (!is_ppc64_elf (ibfd
))
7811 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7812 if (sec
== NULL
|| sec
->size
== 0)
7815 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7818 if (sec
->output_section
== bfd_abs_section_ptr
)
7821 /* Look through the section relocs. */
7822 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7826 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7828 /* Read the relocations. */
7829 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7831 if (relstart
== NULL
)
7834 /* First run through the relocs to check they are sane, and to
7835 determine whether we need to edit this opd section. */
7839 relend
= relstart
+ sec
->reloc_count
;
7840 for (rel
= relstart
; rel
< relend
; )
7842 enum elf_ppc64_reloc_type r_type
;
7843 unsigned long r_symndx
;
7845 struct elf_link_hash_entry
*h
;
7846 Elf_Internal_Sym
*sym
;
7849 /* .opd contains an array of 16 or 24 byte entries. We're
7850 only interested in the reloc pointing to a function entry
7852 offset
= rel
->r_offset
;
7853 if (rel
+ 1 == relend
7854 || rel
[1].r_offset
!= offset
+ 8)
7856 /* If someone messes with .opd alignment then after a
7857 "ld -r" we might have padding in the middle of .opd.
7858 Also, there's nothing to prevent someone putting
7859 something silly in .opd with the assembler. No .opd
7860 optimization for them! */
7863 (_("%pB: .opd is not a regular array of opd entries"), ibfd
);
7868 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7869 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7872 /* xgettext:c-format */
7873 (_("%pB: unexpected reloc type %u in .opd section"),
7879 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7880 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7884 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7886 const char *sym_name
;
7888 sym_name
= h
->root
.root
.string
;
7890 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7894 /* xgettext:c-format */
7895 (_("%pB: undefined sym `%s' in .opd section"),
7901 /* opd entries are always for functions defined in the
7902 current input bfd. If the symbol isn't defined in the
7903 input bfd, then we won't be using the function in this
7904 bfd; It must be defined in a linkonce section in another
7905 bfd, or is weak. It's also possible that we are
7906 discarding the function due to a linker script /DISCARD/,
7907 which we test for via the output_section. */
7908 if (sym_sec
->owner
!= ibfd
7909 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7913 if (rel
+ 1 == relend
7914 || (rel
+ 2 < relend
7915 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7920 if (sec
->size
== offset
+ 24)
7925 if (sec
->size
== offset
+ 16)
7932 else if (rel
+ 1 < relend
7933 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7934 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7936 if (rel
[0].r_offset
== offset
+ 16)
7938 else if (rel
[0].r_offset
!= offset
+ 24)
7945 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7947 if (!broken
&& (need_edit
|| add_aux_fields
))
7949 Elf_Internal_Rela
*write_rel
;
7950 Elf_Internal_Shdr
*rel_hdr
;
7951 bfd_byte
*rptr
, *wptr
;
7952 bfd_byte
*new_contents
;
7955 new_contents
= NULL
;
7956 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7957 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7958 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7959 if (opd
->adjust
== NULL
)
7962 /* This seems a waste of time as input .opd sections are all
7963 zeros as generated by gcc, but I suppose there's no reason
7964 this will always be so. We might start putting something in
7965 the third word of .opd entries. */
7966 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7969 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7974 if (local_syms
!= NULL
7975 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7977 if (elf_section_data (sec
)->relocs
!= relstart
)
7981 sec
->contents
= loc
;
7982 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7985 elf_section_data (sec
)->relocs
= relstart
;
7987 new_contents
= sec
->contents
;
7990 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7991 if (new_contents
== NULL
)
7995 wptr
= new_contents
;
7996 rptr
= sec
->contents
;
7997 write_rel
= relstart
;
7998 for (rel
= relstart
; rel
< relend
; )
8000 unsigned long r_symndx
;
8002 struct elf_link_hash_entry
*h
;
8003 struct ppc_link_hash_entry
*fdh
= NULL
;
8004 Elf_Internal_Sym
*sym
;
8006 Elf_Internal_Rela
*next_rel
;
8009 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8010 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8015 if (next_rel
+ 1 == relend
8016 || (next_rel
+ 2 < relend
8017 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8020 /* See if the .opd entry is full 24 byte or
8021 16 byte (with fd_aux entry overlapped with next
8024 if (next_rel
== relend
)
8026 if (sec
->size
== rel
->r_offset
+ 16)
8029 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8033 && h
->root
.root
.string
[0] == '.')
8035 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8038 fdh
= ppc_follow_link (fdh
);
8039 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8040 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8045 skip
= (sym_sec
->owner
!= ibfd
8046 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8049 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8051 /* Arrange for the function descriptor sym
8053 fdh
->elf
.root
.u
.def
.value
= 0;
8054 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8056 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8058 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8063 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8067 if (++rel
== next_rel
)
8070 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8071 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8078 /* We'll be keeping this opd entry. */
8083 /* Redefine the function descriptor symbol to
8084 this location in the opd section. It is
8085 necessary to update the value here rather
8086 than using an array of adjustments as we do
8087 for local symbols, because various places
8088 in the generic ELF code use the value
8089 stored in u.def.value. */
8090 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8091 fdh
->adjust_done
= 1;
8094 /* Local syms are a bit tricky. We could
8095 tweak them as they can be cached, but
8096 we'd need to look through the local syms
8097 for the function descriptor sym which we
8098 don't have at the moment. So keep an
8099 array of adjustments. */
8100 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8101 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8104 memcpy (wptr
, rptr
, opd_ent_size
);
8105 wptr
+= opd_ent_size
;
8106 if (add_aux_fields
&& opd_ent_size
== 16)
8108 memset (wptr
, '\0', 8);
8112 /* We need to adjust any reloc offsets to point to the
8114 for ( ; rel
!= next_rel
; ++rel
)
8116 rel
->r_offset
+= adjust
;
8117 if (write_rel
!= rel
)
8118 memcpy (write_rel
, rel
, sizeof (*rel
));
8123 rptr
+= opd_ent_size
;
8126 sec
->size
= wptr
- new_contents
;
8127 sec
->reloc_count
= write_rel
- relstart
;
8130 free (sec
->contents
);
8131 sec
->contents
= new_contents
;
8134 /* Fudge the header size too, as this is used later in
8135 elf_bfd_final_link if we are emitting relocs. */
8136 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8137 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8140 else if (elf_section_data (sec
)->relocs
!= relstart
)
8143 if (local_syms
!= NULL
8144 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8146 if (!info
->keep_memory
)
8149 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8154 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8156 /* If we are doing a final link and the last .opd entry is just 16 byte
8157 long, add a 8 byte padding after it. */
8158 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8162 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8164 BFD_ASSERT (need_pad
->size
> 0);
8166 p
= bfd_malloc (need_pad
->size
+ 8);
8170 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8171 p
, 0, need_pad
->size
))
8174 need_pad
->contents
= p
;
8175 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8179 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8183 need_pad
->contents
= p
;
8186 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8187 need_pad
->size
+= 8;
8193 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8196 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8198 struct ppc_link_hash_table
*htab
;
8200 htab
= ppc_hash_table (info
);
8204 if (abiversion (info
->output_bfd
) == 1)
8207 if (htab
->params
->no_multi_toc
)
8208 htab
->do_multi_toc
= 0;
8209 else if (!htab
->do_multi_toc
)
8210 htab
->params
->no_multi_toc
= 1;
8212 /* Default to --no-plt-localentry, as this option can cause problems
8213 with symbol interposition. For example, glibc libpthread.so and
8214 libc.so duplicate many pthread symbols, with a fallback
8215 implementation in libc.so. In some cases the fallback does more
8216 work than the pthread implementation. __pthread_condattr_destroy
8217 is one such symbol: the libpthread.so implementation is
8218 localentry:0 while the libc.so implementation is localentry:8.
8219 An app that "cleverly" uses dlopen to only load necessary
8220 libraries at runtime may omit loading libpthread.so when not
8221 running multi-threaded, which then results in the libc.so
8222 fallback symbols being used and ld.so complaining. Now there
8223 are workarounds in ld (see non_zero_localentry) to detect the
8224 pthread situation, but that may not be the only case where
8225 --plt-localentry can cause trouble. */
8226 if (htab
->params
->plt_localentry0
< 0)
8227 htab
->params
->plt_localentry0
= 0;
8228 if (htab
->params
->plt_localentry0
8229 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8230 FALSE
, FALSE
, FALSE
) == NULL
)
8232 (_("warning: --plt-localentry is especially dangerous without "
8233 "ld.so support to detect ABI violations"));
8235 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8236 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8237 FALSE
, FALSE
, TRUE
));
8238 /* Move dynamic linking info to the function descriptor sym. */
8239 if (htab
->tls_get_addr
!= NULL
)
8240 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8241 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8242 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8243 FALSE
, FALSE
, TRUE
));
8244 if (htab
->params
->tls_get_addr_opt
)
8246 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8248 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8249 FALSE
, FALSE
, TRUE
);
8251 func_desc_adjust (opt
, info
);
8252 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8253 FALSE
, FALSE
, TRUE
);
8255 && (opt_fd
->root
.type
== bfd_link_hash_defined
8256 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8258 /* If glibc supports an optimized __tls_get_addr call stub,
8259 signalled by the presence of __tls_get_addr_opt, and we'll
8260 be calling __tls_get_addr via a plt call stub, then
8261 make __tls_get_addr point to __tls_get_addr_opt. */
8262 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8263 if (htab
->elf
.dynamic_sections_created
8265 && (tga_fd
->type
== STT_FUNC
8266 || tga_fd
->needs_plt
)
8267 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8268 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8270 struct plt_entry
*ent
;
8272 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8273 if (ent
->plt
.refcount
> 0)
8277 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8278 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8279 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8281 if (opt_fd
->dynindx
!= -1)
8283 /* Use __tls_get_addr_opt in dynamic relocations. */
8284 opt_fd
->dynindx
= -1;
8285 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8286 opt_fd
->dynstr_index
);
8287 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8290 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8291 tga
= &htab
->tls_get_addr
->elf
;
8292 if (opt
!= NULL
&& tga
!= NULL
)
8294 tga
->root
.type
= bfd_link_hash_indirect
;
8295 tga
->root
.u
.i
.link
= &opt
->root
;
8296 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8298 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8300 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8302 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8303 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8304 if (htab
->tls_get_addr
!= NULL
)
8306 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8307 htab
->tls_get_addr
->is_func
= 1;
8312 else if (htab
->params
->tls_get_addr_opt
< 0)
8313 htab
->params
->tls_get_addr_opt
= 0;
8315 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8318 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8322 branch_reloc_hash_match (const bfd
*ibfd
,
8323 const Elf_Internal_Rela
*rel
,
8324 const struct ppc_link_hash_entry
*hash1
,
8325 const struct ppc_link_hash_entry
*hash2
)
8327 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8328 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8329 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8331 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8333 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8334 struct elf_link_hash_entry
*h
;
8336 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8337 h
= elf_follow_link (h
);
8338 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8344 /* Run through all the TLS relocs looking for optimization
8345 opportunities. The linker has been hacked (see ppc64elf.em) to do
8346 a preliminary section layout so that we know the TLS segment
8347 offsets. We can't optimize earlier because some optimizations need
8348 to know the tp offset, and we need to optimize before allocating
8349 dynamic relocations. */
8352 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8356 struct ppc_link_hash_table
*htab
;
8357 unsigned char *toc_ref
;
8360 if (!bfd_link_executable (info
))
8363 htab
= ppc_hash_table (info
);
8367 /* Make two passes over the relocs. On the first pass, mark toc
8368 entries involved with tls relocs, and check that tls relocs
8369 involved in setting up a tls_get_addr call are indeed followed by
8370 such a call. If they are not, we can't do any tls optimization.
8371 On the second pass twiddle tls_mask flags to notify
8372 relocate_section that optimization can be done, and adjust got
8373 and plt refcounts. */
8375 for (pass
= 0; pass
< 2; ++pass
)
8376 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8378 Elf_Internal_Sym
*locsyms
= NULL
;
8379 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8381 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8382 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8384 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8385 bfd_boolean found_tls_get_addr_arg
= 0;
8387 /* Read the relocations. */
8388 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8390 if (relstart
== NULL
)
8396 relend
= relstart
+ sec
->reloc_count
;
8397 for (rel
= relstart
; rel
< relend
; rel
++)
8399 enum elf_ppc64_reloc_type r_type
;
8400 unsigned long r_symndx
;
8401 struct elf_link_hash_entry
*h
;
8402 Elf_Internal_Sym
*sym
;
8404 unsigned char *tls_mask
;
8405 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8407 bfd_boolean ok_tprel
, is_local
;
8408 long toc_ref_index
= 0;
8409 int expecting_tls_get_addr
= 0;
8410 bfd_boolean ret
= FALSE
;
8412 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8413 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8417 if (elf_section_data (sec
)->relocs
!= relstart
)
8419 if (toc_ref
!= NULL
)
8422 && (elf_symtab_hdr (ibfd
).contents
8423 != (unsigned char *) locsyms
))
8430 if (h
->root
.type
== bfd_link_hash_defined
8431 || h
->root
.type
== bfd_link_hash_defweak
)
8432 value
= h
->root
.u
.def
.value
;
8433 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8437 found_tls_get_addr_arg
= 0;
8442 /* Symbols referenced by TLS relocs must be of type
8443 STT_TLS. So no need for .opd local sym adjust. */
8444 value
= sym
->st_value
;
8453 && h
->root
.type
== bfd_link_hash_undefweak
)
8455 else if (sym_sec
!= NULL
8456 && sym_sec
->output_section
!= NULL
)
8458 value
+= sym_sec
->output_offset
;
8459 value
+= sym_sec
->output_section
->vma
;
8460 value
-= htab
->elf
.tls_sec
->vma
;
8461 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8462 < (bfd_vma
) 1 << 32);
8466 r_type
= ELF64_R_TYPE (rel
->r_info
);
8467 /* If this section has old-style __tls_get_addr calls
8468 without marker relocs, then check that each
8469 __tls_get_addr call reloc is preceded by a reloc
8470 that conceivably belongs to the __tls_get_addr arg
8471 setup insn. If we don't find matching arg setup
8472 relocs, don't do any tls optimization. */
8474 && sec
->has_tls_get_addr_call
8476 && (h
== &htab
->tls_get_addr
->elf
8477 || h
== &htab
->tls_get_addr_fd
->elf
)
8478 && !found_tls_get_addr_arg
8479 && is_branch_reloc (r_type
))
8481 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8482 "TLS optimization disabled\n"),
8483 ibfd
, sec
, rel
->r_offset
);
8488 found_tls_get_addr_arg
= 0;
8491 case R_PPC64_GOT_TLSLD16
:
8492 case R_PPC64_GOT_TLSLD16_LO
:
8493 expecting_tls_get_addr
= 1;
8494 found_tls_get_addr_arg
= 1;
8497 case R_PPC64_GOT_TLSLD16_HI
:
8498 case R_PPC64_GOT_TLSLD16_HA
:
8499 /* These relocs should never be against a symbol
8500 defined in a shared lib. Leave them alone if
8501 that turns out to be the case. */
8508 tls_type
= TLS_TLS
| TLS_LD
;
8511 case R_PPC64_GOT_TLSGD16
:
8512 case R_PPC64_GOT_TLSGD16_LO
:
8513 expecting_tls_get_addr
= 1;
8514 found_tls_get_addr_arg
= 1;
8517 case R_PPC64_GOT_TLSGD16_HI
:
8518 case R_PPC64_GOT_TLSGD16_HA
:
8524 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8526 tls_type
= TLS_TLS
| TLS_GD
;
8529 case R_PPC64_GOT_TPREL16_DS
:
8530 case R_PPC64_GOT_TPREL16_LO_DS
:
8531 case R_PPC64_GOT_TPREL16_HI
:
8532 case R_PPC64_GOT_TPREL16_HA
:
8537 tls_clear
= TLS_TPREL
;
8538 tls_type
= TLS_TLS
| TLS_TPREL
;
8545 found_tls_get_addr_arg
= 1;
8550 case R_PPC64_TOC16_LO
:
8551 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8554 /* Mark this toc entry as referenced by a TLS
8555 code sequence. We can do that now in the
8556 case of R_PPC64_TLS, and after checking for
8557 tls_get_addr for the TOC16 relocs. */
8558 if (toc_ref
== NULL
)
8559 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8560 if (toc_ref
== NULL
)
8564 value
= h
->root
.u
.def
.value
;
8566 value
= sym
->st_value
;
8567 value
+= rel
->r_addend
;
8570 BFD_ASSERT (value
< toc
->size
8571 && toc
->output_offset
% 8 == 0);
8572 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8573 if (r_type
== R_PPC64_TLS
8574 || r_type
== R_PPC64_TLSGD
8575 || r_type
== R_PPC64_TLSLD
)
8577 toc_ref
[toc_ref_index
] = 1;
8581 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8586 expecting_tls_get_addr
= 2;
8589 case R_PPC64_TPREL64
:
8593 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8598 tls_set
= TLS_EXPLICIT
;
8599 tls_clear
= TLS_TPREL
;
8604 case R_PPC64_DTPMOD64
:
8608 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8610 if (rel
+ 1 < relend
8612 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8613 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8617 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8620 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8629 tls_set
= TLS_EXPLICIT
;
8640 if (!expecting_tls_get_addr
8641 || !sec
->has_tls_get_addr_call
)
8644 if (rel
+ 1 < relend
8645 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8647 htab
->tls_get_addr_fd
))
8649 if (expecting_tls_get_addr
== 2)
8651 /* Check for toc tls entries. */
8652 unsigned char *toc_tls
;
8655 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8660 if (toc_tls
!= NULL
)
8662 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8663 found_tls_get_addr_arg
= 1;
8665 toc_ref
[toc_ref_index
] = 1;
8671 if (expecting_tls_get_addr
!= 1)
8674 /* Uh oh, we didn't find the expected call. We
8675 could just mark this symbol to exclude it
8676 from tls optimization but it's safer to skip
8677 the entire optimization. */
8678 /* xgettext:c-format */
8679 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8680 "TLS optimization disabled\n"),
8681 ibfd
, sec
, rel
->r_offset
);
8686 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8688 struct plt_entry
*ent
;
8689 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8692 if (ent
->addend
== 0)
8694 if (ent
->plt
.refcount
> 0)
8696 ent
->plt
.refcount
-= 1;
8697 expecting_tls_get_addr
= 0;
8703 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8705 struct plt_entry
*ent
;
8706 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8709 if (ent
->addend
== 0)
8711 if (ent
->plt
.refcount
> 0)
8712 ent
->plt
.refcount
-= 1;
8720 if ((tls_set
& TLS_EXPLICIT
) == 0)
8722 struct got_entry
*ent
;
8724 /* Adjust got entry for this reloc. */
8728 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8730 for (; ent
!= NULL
; ent
= ent
->next
)
8731 if (ent
->addend
== rel
->r_addend
8732 && ent
->owner
== ibfd
8733 && ent
->tls_type
== tls_type
)
8740 /* We managed to get rid of a got entry. */
8741 if (ent
->got
.refcount
> 0)
8742 ent
->got
.refcount
-= 1;
8747 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8748 we'll lose one or two dyn relocs. */
8749 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8753 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8755 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8761 *tls_mask
|= tls_set
;
8762 *tls_mask
&= ~tls_clear
;
8765 if (elf_section_data (sec
)->relocs
!= relstart
)
8770 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8772 if (!info
->keep_memory
)
8775 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8779 if (toc_ref
!= NULL
)
8781 htab
->do_tls_opt
= 1;
8785 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8786 the values of any global symbols in a toc section that has been
8787 edited. Globals in toc sections should be a rarity, so this function
8788 sets a flag if any are found in toc sections other than the one just
8789 edited, so that further hash table traversals can be avoided. */
8791 struct adjust_toc_info
8794 unsigned long *skip
;
8795 bfd_boolean global_toc_syms
;
8798 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8801 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8803 struct ppc_link_hash_entry
*eh
;
8804 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8807 if (h
->root
.type
!= bfd_link_hash_defined
8808 && h
->root
.type
!= bfd_link_hash_defweak
)
8811 eh
= (struct ppc_link_hash_entry
*) h
;
8812 if (eh
->adjust_done
)
8815 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8817 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8818 i
= toc_inf
->toc
->rawsize
>> 3;
8820 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8822 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8825 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8828 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8829 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8832 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8833 eh
->adjust_done
= 1;
8835 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8836 toc_inf
->global_toc_syms
= TRUE
;
8841 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8842 on a _LO variety toc/got reloc. */
8845 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8847 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8848 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8849 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8850 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8851 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8852 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8853 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8854 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8855 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8856 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8857 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8858 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8859 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8860 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8861 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8862 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8863 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8864 /* Exclude lfqu by testing reloc. If relocs are ever
8865 defined for the reduced D field in psq_lu then those
8866 will need testing too. */
8867 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8868 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8870 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8871 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8872 /* Exclude stfqu. psq_stu as above for psq_lu. */
8873 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8874 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8875 && (insn
& 1) == 0));
8878 /* Examine all relocs referencing .toc sections in order to remove
8879 unused .toc entries. */
8882 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8885 struct adjust_toc_info toc_inf
;
8886 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8888 htab
->do_toc_opt
= 1;
8889 toc_inf
.global_toc_syms
= TRUE
;
8890 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8892 asection
*toc
, *sec
;
8893 Elf_Internal_Shdr
*symtab_hdr
;
8894 Elf_Internal_Sym
*local_syms
;
8895 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8896 unsigned long *skip
, *drop
;
8897 unsigned char *used
;
8898 unsigned char *keep
, last
, some_unused
;
8900 if (!is_ppc64_elf (ibfd
))
8903 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8906 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8907 || discarded_section (toc
))
8912 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8914 /* Look at sections dropped from the final link. */
8917 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8919 if (sec
->reloc_count
== 0
8920 || !discarded_section (sec
)
8921 || get_opd_info (sec
)
8922 || (sec
->flags
& SEC_ALLOC
) == 0
8923 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8926 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8927 if (relstart
== NULL
)
8930 /* Run through the relocs to see which toc entries might be
8932 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8934 enum elf_ppc64_reloc_type r_type
;
8935 unsigned long r_symndx
;
8937 struct elf_link_hash_entry
*h
;
8938 Elf_Internal_Sym
*sym
;
8941 r_type
= ELF64_R_TYPE (rel
->r_info
);
8948 case R_PPC64_TOC16_LO
:
8949 case R_PPC64_TOC16_HI
:
8950 case R_PPC64_TOC16_HA
:
8951 case R_PPC64_TOC16_DS
:
8952 case R_PPC64_TOC16_LO_DS
:
8956 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8957 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8965 val
= h
->root
.u
.def
.value
;
8967 val
= sym
->st_value
;
8968 val
+= rel
->r_addend
;
8970 if (val
>= toc
->size
)
8973 /* Anything in the toc ought to be aligned to 8 bytes.
8974 If not, don't mark as unused. */
8980 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8985 skip
[val
>> 3] = ref_from_discarded
;
8988 if (elf_section_data (sec
)->relocs
!= relstart
)
8992 /* For largetoc loads of address constants, we can convert
8993 . addis rx,2,addr@got@ha
8994 . ld ry,addr@got@l(rx)
8996 . addis rx,2,addr@toc@ha
8997 . addi ry,rx,addr@toc@l
8998 when addr is within 2G of the toc pointer. This then means
8999 that the word storing "addr" in the toc is no longer needed. */
9001 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9002 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9003 && toc
->reloc_count
!= 0)
9005 /* Read toc relocs. */
9006 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9008 if (toc_relocs
== NULL
)
9011 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9013 enum elf_ppc64_reloc_type r_type
;
9014 unsigned long r_symndx
;
9016 struct elf_link_hash_entry
*h
;
9017 Elf_Internal_Sym
*sym
;
9020 r_type
= ELF64_R_TYPE (rel
->r_info
);
9021 if (r_type
!= R_PPC64_ADDR64
)
9024 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9025 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9030 || sym_sec
->output_section
== NULL
9031 || discarded_section (sym_sec
))
9034 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9039 if (h
->type
== STT_GNU_IFUNC
)
9041 val
= h
->root
.u
.def
.value
;
9045 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9047 val
= sym
->st_value
;
9049 val
+= rel
->r_addend
;
9050 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9052 /* We don't yet know the exact toc pointer value, but we
9053 know it will be somewhere in the toc section. Don't
9054 optimize if the difference from any possible toc
9055 pointer is outside [ff..f80008000, 7fff7fff]. */
9056 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9057 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9060 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9061 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9066 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9071 skip
[rel
->r_offset
>> 3]
9072 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9079 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9083 if (local_syms
!= NULL
9084 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9088 && elf_section_data (sec
)->relocs
!= relstart
)
9090 if (toc_relocs
!= NULL
9091 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9098 /* Now check all kept sections that might reference the toc.
9099 Check the toc itself last. */
9100 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9103 sec
= (sec
== toc
? NULL
9104 : sec
->next
== NULL
? toc
9105 : sec
->next
== toc
&& toc
->next
? toc
->next
9110 if (sec
->reloc_count
== 0
9111 || discarded_section (sec
)
9112 || get_opd_info (sec
)
9113 || (sec
->flags
& SEC_ALLOC
) == 0
9114 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9117 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9119 if (relstart
== NULL
)
9125 /* Mark toc entries referenced as used. */
9129 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9131 enum elf_ppc64_reloc_type r_type
;
9132 unsigned long r_symndx
;
9134 struct elf_link_hash_entry
*h
;
9135 Elf_Internal_Sym
*sym
;
9137 enum {no_check
, check_lo
, check_ha
} insn_check
;
9139 r_type
= ELF64_R_TYPE (rel
->r_info
);
9143 insn_check
= no_check
;
9146 case R_PPC64_GOT_TLSLD16_HA
:
9147 case R_PPC64_GOT_TLSGD16_HA
:
9148 case R_PPC64_GOT_TPREL16_HA
:
9149 case R_PPC64_GOT_DTPREL16_HA
:
9150 case R_PPC64_GOT16_HA
:
9151 case R_PPC64_TOC16_HA
:
9152 insn_check
= check_ha
;
9155 case R_PPC64_GOT_TLSLD16_LO
:
9156 case R_PPC64_GOT_TLSGD16_LO
:
9157 case R_PPC64_GOT_TPREL16_LO_DS
:
9158 case R_PPC64_GOT_DTPREL16_LO_DS
:
9159 case R_PPC64_GOT16_LO
:
9160 case R_PPC64_GOT16_LO_DS
:
9161 case R_PPC64_TOC16_LO
:
9162 case R_PPC64_TOC16_LO_DS
:
9163 insn_check
= check_lo
;
9167 if (insn_check
!= no_check
)
9169 bfd_vma off
= rel
->r_offset
& ~3;
9170 unsigned char buf
[4];
9173 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9178 insn
= bfd_get_32 (ibfd
, buf
);
9179 if (insn_check
== check_lo
9180 ? !ok_lo_toc_insn (insn
, r_type
)
9181 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9182 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9186 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9187 sprintf (str
, "%#08x", insn
);
9188 info
->callbacks
->einfo
9189 /* xgettext:c-format */
9190 (_("%H: toc optimization is not supported for"
9191 " %s instruction\n"),
9192 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9199 case R_PPC64_TOC16_LO
:
9200 case R_PPC64_TOC16_HI
:
9201 case R_PPC64_TOC16_HA
:
9202 case R_PPC64_TOC16_DS
:
9203 case R_PPC64_TOC16_LO_DS
:
9204 /* In case we're taking addresses of toc entries. */
9205 case R_PPC64_ADDR64
:
9212 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9213 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9224 val
= h
->root
.u
.def
.value
;
9226 val
= sym
->st_value
;
9227 val
+= rel
->r_addend
;
9229 if (val
>= toc
->size
)
9232 if ((skip
[val
>> 3] & can_optimize
) != 0)
9239 case R_PPC64_TOC16_HA
:
9242 case R_PPC64_TOC16_LO_DS
:
9243 off
= rel
->r_offset
;
9244 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9245 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9251 if ((opc
& (0x3f << 2)) == (58u << 2))
9256 /* Wrong sort of reloc, or not a ld. We may
9257 as well clear ref_from_discarded too. */
9264 /* For the toc section, we only mark as used if this
9265 entry itself isn't unused. */
9266 else if ((used
[rel
->r_offset
>> 3]
9267 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9270 /* Do all the relocs again, to catch reference
9279 if (elf_section_data (sec
)->relocs
!= relstart
)
9283 /* Merge the used and skip arrays. Assume that TOC
9284 doublewords not appearing as either used or unused belong
9285 to an entry more than one doubleword in size. */
9286 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9287 drop
< skip
+ (toc
->size
+ 7) / 8;
9292 *drop
&= ~ref_from_discarded
;
9293 if ((*drop
& can_optimize
) != 0)
9297 else if ((*drop
& ref_from_discarded
) != 0)
9300 last
= ref_from_discarded
;
9310 bfd_byte
*contents
, *src
;
9312 Elf_Internal_Sym
*sym
;
9313 bfd_boolean local_toc_syms
= FALSE
;
9315 /* Shuffle the toc contents, and at the same time convert the
9316 skip array from booleans into offsets. */
9317 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9320 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9322 for (src
= contents
, off
= 0, drop
= skip
;
9323 src
< contents
+ toc
->size
;
9326 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9331 memcpy (src
- off
, src
, 8);
9335 toc
->rawsize
= toc
->size
;
9336 toc
->size
= src
- contents
- off
;
9338 /* Adjust addends for relocs against the toc section sym,
9339 and optimize any accesses we can. */
9340 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9342 if (sec
->reloc_count
== 0
9343 || discarded_section (sec
))
9346 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9348 if (relstart
== NULL
)
9351 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9353 enum elf_ppc64_reloc_type r_type
;
9354 unsigned long r_symndx
;
9356 struct elf_link_hash_entry
*h
;
9359 r_type
= ELF64_R_TYPE (rel
->r_info
);
9366 case R_PPC64_TOC16_LO
:
9367 case R_PPC64_TOC16_HI
:
9368 case R_PPC64_TOC16_HA
:
9369 case R_PPC64_TOC16_DS
:
9370 case R_PPC64_TOC16_LO_DS
:
9371 case R_PPC64_ADDR64
:
9375 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9376 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9384 val
= h
->root
.u
.def
.value
;
9387 val
= sym
->st_value
;
9389 local_toc_syms
= TRUE
;
9392 val
+= rel
->r_addend
;
9394 if (val
> toc
->rawsize
)
9396 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9398 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9400 Elf_Internal_Rela
*tocrel
9401 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9402 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9406 case R_PPC64_TOC16_HA
:
9407 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9410 case R_PPC64_TOC16_LO_DS
:
9411 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9415 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9417 info
->callbacks
->einfo
9418 /* xgettext:c-format */
9419 (_("%H: %s references "
9420 "optimized away TOC entry\n"),
9421 ibfd
, sec
, rel
->r_offset
,
9422 ppc64_elf_howto_table
[r_type
]->name
);
9423 bfd_set_error (bfd_error_bad_value
);
9426 rel
->r_addend
= tocrel
->r_addend
;
9427 elf_section_data (sec
)->relocs
= relstart
;
9431 if (h
!= NULL
|| sym
->st_value
!= 0)
9434 rel
->r_addend
-= skip
[val
>> 3];
9435 elf_section_data (sec
)->relocs
= relstart
;
9438 if (elf_section_data (sec
)->relocs
!= relstart
)
9442 /* We shouldn't have local or global symbols defined in the TOC,
9443 but handle them anyway. */
9444 if (local_syms
!= NULL
)
9445 for (sym
= local_syms
;
9446 sym
< local_syms
+ symtab_hdr
->sh_info
;
9448 if (sym
->st_value
!= 0
9449 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9453 if (sym
->st_value
> toc
->rawsize
)
9454 i
= toc
->rawsize
>> 3;
9456 i
= sym
->st_value
>> 3;
9458 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9462 (_("%s defined on removed toc entry"),
9463 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9466 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9467 sym
->st_value
= (bfd_vma
) i
<< 3;
9470 sym
->st_value
-= skip
[i
];
9471 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9474 /* Adjust any global syms defined in this toc input section. */
9475 if (toc_inf
.global_toc_syms
)
9478 toc_inf
.skip
= skip
;
9479 toc_inf
.global_toc_syms
= FALSE
;
9480 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9484 if (toc
->reloc_count
!= 0)
9486 Elf_Internal_Shdr
*rel_hdr
;
9487 Elf_Internal_Rela
*wrel
;
9490 /* Remove unused toc relocs, and adjust those we keep. */
9491 if (toc_relocs
== NULL
)
9492 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9494 if (toc_relocs
== NULL
)
9498 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9499 if ((skip
[rel
->r_offset
>> 3]
9500 & (ref_from_discarded
| can_optimize
)) == 0)
9502 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9503 wrel
->r_info
= rel
->r_info
;
9504 wrel
->r_addend
= rel
->r_addend
;
9507 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9508 &local_syms
, NULL
, NULL
))
9511 elf_section_data (toc
)->relocs
= toc_relocs
;
9512 toc
->reloc_count
= wrel
- toc_relocs
;
9513 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9514 sz
= rel_hdr
->sh_entsize
;
9515 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9518 else if (toc_relocs
!= NULL
9519 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9522 if (local_syms
!= NULL
9523 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9525 if (!info
->keep_memory
)
9528 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9536 /* Return true iff input section I references the TOC using
9537 instructions limited to +/-32k offsets. */
9540 ppc64_elf_has_small_toc_reloc (asection
*i
)
9542 return (is_ppc64_elf (i
->owner
)
9543 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9546 /* Allocate space for one GOT entry. */
9549 allocate_got (struct elf_link_hash_entry
*h
,
9550 struct bfd_link_info
*info
,
9551 struct got_entry
*gent
)
9553 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9554 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9555 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9557 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9558 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9559 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9561 gent
->got
.offset
= got
->size
;
9562 got
->size
+= entsize
;
9564 if (h
->type
== STT_GNU_IFUNC
)
9566 htab
->elf
.irelplt
->size
+= rentsize
;
9567 htab
->got_reli_size
+= rentsize
;
9569 else if (((bfd_link_pic (info
)
9570 && !((gent
->tls_type
& TLS_TPREL
) != 0
9571 && bfd_link_executable (info
)
9572 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9573 || (htab
->elf
.dynamic_sections_created
9575 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9576 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9578 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9579 relgot
->size
+= rentsize
;
9583 /* This function merges got entries in the same toc group. */
9586 merge_got_entries (struct got_entry
**pent
)
9588 struct got_entry
*ent
, *ent2
;
9590 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9591 if (!ent
->is_indirect
)
9592 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9593 if (!ent2
->is_indirect
9594 && ent2
->addend
== ent
->addend
9595 && ent2
->tls_type
== ent
->tls_type
9596 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9598 ent2
->is_indirect
= TRUE
;
9599 ent2
->got
.ent
= ent
;
9603 /* If H is undefined, make it dynamic if that makes sense. */
9606 ensure_undef_dynamic (struct bfd_link_info
*info
,
9607 struct elf_link_hash_entry
*h
)
9609 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9611 if (htab
->dynamic_sections_created
9612 && ((info
->dynamic_undefined_weak
!= 0
9613 && h
->root
.type
== bfd_link_hash_undefweak
)
9614 || h
->root
.type
== bfd_link_hash_undefined
)
9617 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9618 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9622 /* Allocate space in .plt, .got and associated reloc sections for
9626 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9628 struct bfd_link_info
*info
;
9629 struct ppc_link_hash_table
*htab
;
9631 struct ppc_link_hash_entry
*eh
;
9632 struct got_entry
**pgent
, *gent
;
9634 if (h
->root
.type
== bfd_link_hash_indirect
)
9637 info
= (struct bfd_link_info
*) inf
;
9638 htab
= ppc_hash_table (info
);
9642 eh
= (struct ppc_link_hash_entry
*) h
;
9643 /* Run through the TLS GD got entries first if we're changing them
9645 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9646 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9647 if (gent
->got
.refcount
> 0
9648 && (gent
->tls_type
& TLS_GD
) != 0)
9650 /* This was a GD entry that has been converted to TPREL. If
9651 there happens to be a TPREL entry we can use that one. */
9652 struct got_entry
*ent
;
9653 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9654 if (ent
->got
.refcount
> 0
9655 && (ent
->tls_type
& TLS_TPREL
) != 0
9656 && ent
->addend
== gent
->addend
9657 && ent
->owner
== gent
->owner
)
9659 gent
->got
.refcount
= 0;
9663 /* If not, then we'll be using our own TPREL entry. */
9664 if (gent
->got
.refcount
!= 0)
9665 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9668 /* Remove any list entry that won't generate a word in the GOT before
9669 we call merge_got_entries. Otherwise we risk merging to empty
9671 pgent
= &h
->got
.glist
;
9672 while ((gent
= *pgent
) != NULL
)
9673 if (gent
->got
.refcount
> 0)
9675 if ((gent
->tls_type
& TLS_LD
) != 0
9678 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9679 *pgent
= gent
->next
;
9682 pgent
= &gent
->next
;
9685 *pgent
= gent
->next
;
9687 if (!htab
->do_multi_toc
)
9688 merge_got_entries (&h
->got
.glist
);
9690 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9691 if (!gent
->is_indirect
)
9693 /* Make sure this symbol is output as a dynamic symbol. */
9694 if (!ensure_undef_dynamic (info
, h
))
9697 if (!is_ppc64_elf (gent
->owner
))
9700 allocate_got (h
, info
, gent
);
9703 /* If no dynamic sections we can't have dynamic relocs, except for
9704 IFUNCs which are handled even in static executables. */
9705 if (!htab
->elf
.dynamic_sections_created
9706 && h
->type
!= STT_GNU_IFUNC
)
9707 eh
->dyn_relocs
= NULL
;
9709 /* Discard relocs on undefined symbols that must be local. */
9710 else if (h
->root
.type
== bfd_link_hash_undefined
9711 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9712 eh
->dyn_relocs
= NULL
;
9714 /* Also discard relocs on undefined weak syms with non-default
9715 visibility, or when dynamic_undefined_weak says so. */
9716 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9717 eh
->dyn_relocs
= NULL
;
9719 if (eh
->dyn_relocs
!= NULL
)
9721 struct elf_dyn_relocs
*p
, **pp
;
9723 /* In the shared -Bsymbolic case, discard space allocated for
9724 dynamic pc-relative relocs against symbols which turn out to
9725 be defined in regular objects. For the normal shared case,
9726 discard space for relocs that have become local due to symbol
9727 visibility changes. */
9729 if (bfd_link_pic (info
))
9731 /* Relocs that use pc_count are those that appear on a call
9732 insn, or certain REL relocs (see must_be_dyn_reloc) that
9733 can be generated via assembly. We want calls to
9734 protected symbols to resolve directly to the function
9735 rather than going via the plt. If people want function
9736 pointer comparisons to work as expected then they should
9737 avoid writing weird assembly. */
9738 if (SYMBOL_CALLS_LOCAL (info
, h
))
9740 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9742 p
->count
-= p
->pc_count
;
9751 if (eh
->dyn_relocs
!= NULL
)
9753 /* Make sure this symbol is output as a dynamic symbol. */
9754 if (!ensure_undef_dynamic (info
, h
))
9758 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
9760 /* For the non-pic case, discard space for relocs against
9761 symbols which turn out to need copy relocs or are not
9763 if (h
->dynamic_adjusted
9765 && !ELF_COMMON_DEF_P (h
))
9767 /* Make sure this symbol is output as a dynamic symbol. */
9768 if (!ensure_undef_dynamic (info
, h
))
9771 if (h
->dynindx
== -1)
9772 eh
->dyn_relocs
= NULL
;
9775 eh
->dyn_relocs
= NULL
;
9778 /* Finally, allocate space. */
9779 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9781 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9782 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9783 sreloc
= htab
->elf
.irelplt
;
9784 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9788 if ((htab
->elf
.dynamic_sections_created
9789 && h
->dynindx
!= -1)
9790 || h
->type
== STT_GNU_IFUNC
)
9792 struct plt_entry
*pent
;
9793 bfd_boolean doneone
= FALSE
;
9794 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9795 if (pent
->plt
.refcount
> 0)
9797 if (!htab
->elf
.dynamic_sections_created
9798 || h
->dynindx
== -1)
9801 pent
->plt
.offset
= s
->size
;
9802 s
->size
+= PLT_ENTRY_SIZE (htab
);
9803 s
= htab
->elf
.irelplt
;
9807 /* If this is the first .plt entry, make room for the special
9811 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9813 pent
->plt
.offset
= s
->size
;
9815 /* Make room for this entry. */
9816 s
->size
+= PLT_ENTRY_SIZE (htab
);
9818 /* Make room for the .glink code. */
9821 s
->size
+= GLINK_PLTRESOLVE_SIZE (htab
);
9824 /* We need bigger stubs past index 32767. */
9825 if (s
->size
>= GLINK_PLTRESOLVE_SIZE (htab
) + 32768*2*4)
9832 /* We also need to make an entry in the .rela.plt section. */
9833 s
= htab
->elf
.srelplt
;
9835 s
->size
+= sizeof (Elf64_External_Rela
);
9839 pent
->plt
.offset
= (bfd_vma
) -1;
9842 h
->plt
.plist
= NULL
;
9848 h
->plt
.plist
= NULL
;
9855 #define PPC_LO(v) ((v) & 0xffff)
9856 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9857 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9859 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9860 to set up space for global entry stubs. These are put in glink,
9861 after the branch table. */
9864 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9866 struct bfd_link_info
*info
;
9867 struct ppc_link_hash_table
*htab
;
9868 struct plt_entry
*pent
;
9871 if (h
->root
.type
== bfd_link_hash_indirect
)
9874 if (!h
->pointer_equality_needed
)
9881 htab
= ppc_hash_table (info
);
9885 s
= htab
->global_entry
;
9886 plt
= htab
->elf
.splt
;
9887 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9888 if (pent
->plt
.offset
!= (bfd_vma
) -1
9889 && pent
->addend
== 0)
9891 /* For ELFv2, if this symbol is not defined in a regular file
9892 and we are not generating a shared library or pie, then we
9893 need to define the symbol in the executable on a call stub.
9894 This is to avoid text relocations. */
9895 bfd_vma off
, stub_align
, stub_off
, stub_size
;
9896 unsigned int align_power
;
9900 if (htab
->params
->plt_stub_align
>= 0)
9901 align_power
= htab
->params
->plt_stub_align
;
9903 align_power
= -htab
->params
->plt_stub_align
;
9904 /* Setting section alignment is delayed until we know it is
9905 non-empty. Otherwise the .text output section will be
9906 aligned at least to plt_stub_align even when no global
9907 entry stubs are needed. */
9908 if (s
->alignment_power
< align_power
)
9909 s
->alignment_power
= align_power
;
9910 stub_align
= (bfd_vma
) 1 << align_power
;
9911 if (htab
->params
->plt_stub_align
>= 0
9912 || ((((stub_off
+ stub_size
- 1) & -stub_align
)
9913 - (stub_off
& -stub_align
))
9914 > ((stub_size
- 1) & -stub_align
)))
9915 stub_off
= (stub_off
+ stub_align
- 1) & -stub_align
;
9916 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
9917 off
-= stub_off
+ s
->output_offset
+ s
->output_section
->vma
;
9918 /* Note that for --plt-stub-align negative we have a possible
9919 dependency between stub offset and size. Break that
9920 dependency by assuming the max stub size when calculating
9922 if (PPC_HA (off
) == 0)
9924 h
->root
.type
= bfd_link_hash_defined
;
9925 h
->root
.u
.def
.section
= s
;
9926 h
->root
.u
.def
.value
= stub_off
;
9927 s
->size
= stub_off
+ stub_size
;
9933 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9934 read-only sections. */
9937 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
9941 if (h
->root
.type
== bfd_link_hash_indirect
)
9944 sec
= readonly_dynrelocs (h
);
9947 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9949 info
->flags
|= DF_TEXTREL
;
9950 info
->callbacks
->minfo
9951 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
9952 sec
->owner
, h
->root
.root
.string
, sec
);
9954 /* Not an error, just cut short the traversal. */
9960 /* Set the sizes of the dynamic sections. */
9963 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9964 struct bfd_link_info
*info
)
9966 struct ppc_link_hash_table
*htab
;
9971 struct got_entry
*first_tlsld
;
9973 htab
= ppc_hash_table (info
);
9977 dynobj
= htab
->elf
.dynobj
;
9981 if (htab
->elf
.dynamic_sections_created
)
9983 /* Set the contents of the .interp section to the interpreter. */
9984 if (bfd_link_executable (info
) && !info
->nointerp
)
9986 s
= bfd_get_linker_section (dynobj
, ".interp");
9989 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9990 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9994 /* Set up .got offsets for local syms, and space for local dynamic
9996 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9998 struct got_entry
**lgot_ents
;
9999 struct got_entry
**end_lgot_ents
;
10000 struct plt_entry
**local_plt
;
10001 struct plt_entry
**end_local_plt
;
10002 unsigned char *lgot_masks
;
10003 bfd_size_type locsymcount
;
10004 Elf_Internal_Shdr
*symtab_hdr
;
10006 if (!is_ppc64_elf (ibfd
))
10009 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10011 struct ppc_dyn_relocs
*p
;
10013 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10015 if (!bfd_is_abs_section (p
->sec
)
10016 && bfd_is_abs_section (p
->sec
->output_section
))
10018 /* Input section has been discarded, either because
10019 it is a copy of a linkonce section or due to
10020 linker script /DISCARD/, so we'll be discarding
10023 else if (p
->count
!= 0)
10025 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10027 srel
= htab
->elf
.irelplt
;
10028 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10029 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10030 info
->flags
|= DF_TEXTREL
;
10035 lgot_ents
= elf_local_got_ents (ibfd
);
10039 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10040 locsymcount
= symtab_hdr
->sh_info
;
10041 end_lgot_ents
= lgot_ents
+ locsymcount
;
10042 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10043 end_local_plt
= local_plt
+ locsymcount
;
10044 lgot_masks
= (unsigned char *) end_local_plt
;
10045 s
= ppc64_elf_tdata (ibfd
)->got
;
10046 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10048 struct got_entry
**pent
, *ent
;
10051 while ((ent
= *pent
) != NULL
)
10052 if (ent
->got
.refcount
> 0)
10054 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10056 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10061 unsigned int ent_size
= 8;
10062 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10064 ent
->got
.offset
= s
->size
;
10065 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10070 s
->size
+= ent_size
;
10071 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10073 htab
->elf
.irelplt
->size
+= rel_size
;
10074 htab
->got_reli_size
+= rel_size
;
10076 else if (bfd_link_pic (info
)
10077 && !((ent
->tls_type
& TLS_TPREL
) != 0
10078 && bfd_link_executable (info
)))
10080 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10081 srel
->size
+= rel_size
;
10090 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10091 for (; local_plt
< end_local_plt
; ++local_plt
)
10093 struct plt_entry
*ent
;
10095 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10096 if (ent
->plt
.refcount
> 0)
10098 s
= htab
->elf
.iplt
;
10099 ent
->plt
.offset
= s
->size
;
10100 s
->size
+= PLT_ENTRY_SIZE (htab
);
10102 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10105 ent
->plt
.offset
= (bfd_vma
) -1;
10109 /* Allocate global sym .plt and .got entries, and space for global
10110 sym dynamic relocs. */
10111 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10113 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10114 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10116 first_tlsld
= NULL
;
10117 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10119 struct got_entry
*ent
;
10121 if (!is_ppc64_elf (ibfd
))
10124 ent
= ppc64_tlsld_got (ibfd
);
10125 if (ent
->got
.refcount
> 0)
10127 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10129 ent
->is_indirect
= TRUE
;
10130 ent
->got
.ent
= first_tlsld
;
10134 if (first_tlsld
== NULL
)
10136 s
= ppc64_elf_tdata (ibfd
)->got
;
10137 ent
->got
.offset
= s
->size
;
10140 if (bfd_link_pic (info
))
10142 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10143 srel
->size
+= sizeof (Elf64_External_Rela
);
10148 ent
->got
.offset
= (bfd_vma
) -1;
10151 /* We now have determined the sizes of the various dynamic sections.
10152 Allocate memory for them. */
10154 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10156 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10159 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10160 /* These haven't been allocated yet; don't strip. */
10162 else if (s
== htab
->elf
.sgot
10163 || s
== htab
->elf
.splt
10164 || s
== htab
->elf
.iplt
10165 || s
== htab
->glink
10166 || s
== htab
->global_entry
10167 || s
== htab
->elf
.sdynbss
10168 || s
== htab
->elf
.sdynrelro
)
10170 /* Strip this section if we don't need it; see the
10173 else if (s
== htab
->glink_eh_frame
)
10175 if (!bfd_is_abs_section (s
->output_section
))
10176 /* Not sized yet. */
10179 else if (CONST_STRNEQ (s
->name
, ".rela"))
10183 if (s
!= htab
->elf
.srelplt
)
10186 /* We use the reloc_count field as a counter if we need
10187 to copy relocs into the output file. */
10188 s
->reloc_count
= 0;
10193 /* It's not one of our sections, so don't allocate space. */
10199 /* If we don't need this section, strip it from the
10200 output file. This is mostly to handle .rela.bss and
10201 .rela.plt. We must create both sections in
10202 create_dynamic_sections, because they must be created
10203 before the linker maps input sections to output
10204 sections. The linker does that before
10205 adjust_dynamic_symbol is called, and it is that
10206 function which decides whether anything needs to go
10207 into these sections. */
10208 s
->flags
|= SEC_EXCLUDE
;
10212 if (bfd_is_abs_section (s
->output_section
))
10213 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10216 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10219 /* Allocate memory for the section contents. We use bfd_zalloc
10220 here in case unused entries are not reclaimed before the
10221 section's contents are written out. This should not happen,
10222 but this way if it does we get a R_PPC64_NONE reloc in .rela
10223 sections instead of garbage.
10224 We also rely on the section contents being zero when writing
10225 the GOT and .dynrelro. */
10226 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10227 if (s
->contents
== NULL
)
10231 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10233 if (!is_ppc64_elf (ibfd
))
10236 s
= ppc64_elf_tdata (ibfd
)->got
;
10237 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10240 s
->flags
|= SEC_EXCLUDE
;
10243 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10244 if (s
->contents
== NULL
)
10248 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10252 s
->flags
|= SEC_EXCLUDE
;
10255 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10256 if (s
->contents
== NULL
)
10259 s
->reloc_count
= 0;
10264 if (htab
->elf
.dynamic_sections_created
)
10266 bfd_boolean tls_opt
;
10268 /* Add some entries to the .dynamic section. We fill in the
10269 values later, in ppc64_elf_finish_dynamic_sections, but we
10270 must add the entries now so that we get the correct size for
10271 the .dynamic section. The DT_DEBUG entry is filled in by the
10272 dynamic linker and used by the debugger. */
10273 #define add_dynamic_entry(TAG, VAL) \
10274 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10276 if (bfd_link_executable (info
))
10278 if (!add_dynamic_entry (DT_DEBUG
, 0))
10282 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10284 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10285 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10286 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10287 || !add_dynamic_entry (DT_JMPREL
, 0)
10288 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10292 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10294 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10295 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10299 tls_opt
= (htab
->params
->tls_get_addr_opt
10300 && htab
->tls_get_addr_fd
!= NULL
10301 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10302 if (tls_opt
|| !htab
->opd_abi
)
10304 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10310 if (!add_dynamic_entry (DT_RELA
, 0)
10311 || !add_dynamic_entry (DT_RELASZ
, 0)
10312 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10315 /* If any dynamic relocs apply to a read-only section,
10316 then we need a DT_TEXTREL entry. */
10317 if ((info
->flags
& DF_TEXTREL
) == 0)
10318 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10320 if ((info
->flags
& DF_TEXTREL
) != 0)
10322 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10327 #undef add_dynamic_entry
10332 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10335 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10337 if (h
->plt
.plist
!= NULL
10339 && !h
->pointer_equality_needed
)
10342 return _bfd_elf_hash_symbol (h
);
10345 /* Determine the type of stub needed, if any, for a call. */
10347 static inline enum ppc_stub_type
10348 ppc_type_of_stub (asection
*input_sec
,
10349 const Elf_Internal_Rela
*rel
,
10350 struct ppc_link_hash_entry
**hash
,
10351 struct plt_entry
**plt_ent
,
10352 bfd_vma destination
,
10353 unsigned long local_off
)
10355 struct ppc_link_hash_entry
*h
= *hash
;
10357 bfd_vma branch_offset
;
10358 bfd_vma max_branch_offset
;
10359 enum elf_ppc64_reloc_type r_type
;
10363 struct plt_entry
*ent
;
10364 struct ppc_link_hash_entry
*fdh
= h
;
10366 && h
->oh
->is_func_descriptor
)
10368 fdh
= ppc_follow_link (h
->oh
);
10372 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10373 if (ent
->addend
== rel
->r_addend
10374 && ent
->plt
.offset
!= (bfd_vma
) -1)
10377 return ppc_stub_plt_call
;
10380 /* Here, we know we don't have a plt entry. If we don't have a
10381 either a defined function descriptor or a defined entry symbol
10382 in a regular object file, then it is pointless trying to make
10383 any other type of stub. */
10384 if (!is_static_defined (&fdh
->elf
)
10385 && !is_static_defined (&h
->elf
))
10386 return ppc_stub_none
;
10388 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10390 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10391 struct plt_entry
**local_plt
= (struct plt_entry
**)
10392 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10393 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10395 if (local_plt
[r_symndx
] != NULL
)
10397 struct plt_entry
*ent
;
10399 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10400 if (ent
->addend
== rel
->r_addend
10401 && ent
->plt
.offset
!= (bfd_vma
) -1)
10404 return ppc_stub_plt_call
;
10409 /* Determine where the call point is. */
10410 location
= (input_sec
->output_offset
10411 + input_sec
->output_section
->vma
10414 branch_offset
= destination
- location
;
10415 r_type
= ELF64_R_TYPE (rel
->r_info
);
10417 /* Determine if a long branch stub is needed. */
10418 max_branch_offset
= 1 << 25;
10419 if (r_type
!= R_PPC64_REL24
)
10420 max_branch_offset
= 1 << 15;
10422 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10423 /* We need a stub. Figure out whether a long_branch or plt_branch
10424 is needed later. */
10425 return ppc_stub_long_branch
;
10427 return ppc_stub_none
;
10430 /* With power7 weakly ordered memory model, it is possible for ld.so
10431 to update a plt entry in one thread and have another thread see a
10432 stale zero toc entry. To avoid this we need some sort of acquire
10433 barrier in the call stub. One solution is to make the load of the
10434 toc word seem to appear to depend on the load of the function entry
10435 word. Another solution is to test for r2 being zero, and branch to
10436 the appropriate glink entry if so.
10438 . fake dep barrier compare
10439 . ld 12,xxx(2) ld 12,xxx(2)
10440 . mtctr 12 mtctr 12
10441 . xor 11,12,12 ld 2,xxx+8(2)
10442 . add 2,2,11 cmpldi 2,0
10443 . ld 2,xxx+8(2) bnectr+
10444 . bctr b <glink_entry>
10446 The solution involving the compare turns out to be faster, so
10447 that's what we use unless the branch won't reach. */
10449 #define ALWAYS_USE_FAKE_DEP 0
10450 #define ALWAYS_EMIT_R2SAVE 0
10452 static inline unsigned int
10453 plt_stub_size (struct ppc_link_hash_table
*htab
,
10454 struct ppc_stub_hash_entry
*stub_entry
,
10457 unsigned size
= 12;
10459 if (ALWAYS_EMIT_R2SAVE
10460 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10462 if (PPC_HA (off
) != 0)
10467 if (htab
->params
->plt_static_chain
)
10469 if (htab
->params
->plt_thread_safe
10470 && htab
->elf
.dynamic_sections_created
10471 && stub_entry
->h
!= NULL
10472 && stub_entry
->h
->elf
.dynindx
!= -1)
10474 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10477 if (stub_entry
->h
!= NULL
10478 && (stub_entry
->h
== htab
->tls_get_addr_fd
10479 || stub_entry
->h
== htab
->tls_get_addr
)
10480 && htab
->params
->tls_get_addr_opt
)
10483 if (ALWAYS_EMIT_R2SAVE
10484 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10490 /* Depending on the sign of plt_stub_align:
10491 If positive, return the padding to align to a 2**plt_stub_align
10493 If negative, if this stub would cross fewer 2**plt_stub_align
10494 boundaries if we align, then return the padding needed to do so. */
10496 static inline unsigned int
10497 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10498 struct ppc_stub_hash_entry
*stub_entry
,
10502 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10503 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10505 if (htab
->params
->plt_stub_align
>= 0)
10507 stub_align
= 1 << htab
->params
->plt_stub_align
;
10508 if ((stub_off
& (stub_align
- 1)) != 0)
10509 return stub_align
- (stub_off
& (stub_align
- 1));
10513 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10514 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10515 > ((stub_size
- 1) & -stub_align
))
10516 return stub_align
- (stub_off
& (stub_align
- 1));
10520 /* Build a .plt call stub. */
10522 static inline bfd_byte
*
10523 build_plt_stub (struct ppc_link_hash_table
*htab
,
10524 struct ppc_stub_hash_entry
*stub_entry
,
10525 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10527 bfd
*obfd
= htab
->params
->stub_bfd
;
10528 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10529 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10530 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10531 && htab
->elf
.dynamic_sections_created
10532 && stub_entry
->h
!= NULL
10533 && stub_entry
->h
->elf
.dynindx
!= -1);
10534 bfd_boolean use_fake_dep
= plt_thread_safe
;
10535 bfd_vma cmp_branch_off
= 0;
10537 if (!ALWAYS_USE_FAKE_DEP
10540 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10541 || stub_entry
->h
== htab
->tls_get_addr
)
10542 && htab
->params
->tls_get_addr_opt
))
10544 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10545 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10546 / PLT_ENTRY_SIZE (htab
));
10547 bfd_vma glinkoff
= GLINK_PLTRESOLVE_SIZE (htab
) + pltindex
* 8;
10550 if (pltindex
> 32768)
10551 glinkoff
+= (pltindex
- 32768) * 4;
10553 + htab
->glink
->output_offset
10554 + htab
->glink
->output_section
->vma
);
10555 from
= (p
- stub_entry
->group
->stub_sec
->contents
10556 + 4 * (ALWAYS_EMIT_R2SAVE
10557 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10558 + 4 * (PPC_HA (offset
) != 0)
10559 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10560 != PPC_HA (offset
))
10561 + 4 * (plt_static_chain
!= 0)
10563 + stub_entry
->group
->stub_sec
->output_offset
10564 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10565 cmp_branch_off
= to
- from
;
10566 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10569 if (PPC_HA (offset
) != 0)
10573 if (ALWAYS_EMIT_R2SAVE
10574 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10575 r
[0].r_offset
+= 4;
10576 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10577 r
[1].r_offset
= r
[0].r_offset
+ 4;
10578 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10579 r
[1].r_addend
= r
[0].r_addend
;
10582 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10584 r
[2].r_offset
= r
[1].r_offset
+ 4;
10585 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10586 r
[2].r_addend
= r
[0].r_addend
;
10590 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10591 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10592 r
[2].r_addend
= r
[0].r_addend
+ 8;
10593 if (plt_static_chain
)
10595 r
[3].r_offset
= r
[2].r_offset
+ 4;
10596 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10597 r
[3].r_addend
= r
[0].r_addend
+ 16;
10602 if (ALWAYS_EMIT_R2SAVE
10603 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10604 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10607 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10608 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10612 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10613 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10616 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10618 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10621 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10626 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10627 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10629 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10630 if (plt_static_chain
)
10631 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10638 if (ALWAYS_EMIT_R2SAVE
10639 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10640 r
[0].r_offset
+= 4;
10641 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10644 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10646 r
[1].r_offset
= r
[0].r_offset
+ 4;
10647 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10648 r
[1].r_addend
= r
[0].r_addend
;
10652 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10653 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10654 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10655 if (plt_static_chain
)
10657 r
[2].r_offset
= r
[1].r_offset
+ 4;
10658 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10659 r
[2].r_addend
= r
[0].r_addend
+ 8;
10664 if (ALWAYS_EMIT_R2SAVE
10665 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10666 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10667 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10669 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10671 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10674 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10679 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10680 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10682 if (plt_static_chain
)
10683 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10684 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10687 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10689 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10690 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10691 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10694 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10698 /* Build a special .plt call stub for __tls_get_addr. */
10700 #define LD_R11_0R3 0xe9630000
10701 #define LD_R12_0R3 0xe9830000
10702 #define MR_R0_R3 0x7c601b78
10703 #define CMPDI_R11_0 0x2c2b0000
10704 #define ADD_R3_R12_R13 0x7c6c6a14
10705 #define BEQLR 0x4d820020
10706 #define MR_R3_R0 0x7c030378
10707 #define STD_R11_0R1 0xf9610000
10708 #define BCTRL 0x4e800421
10709 #define LD_R11_0R1 0xe9610000
10710 #define MTLR_R11 0x7d6803a6
10712 static inline bfd_byte
*
10713 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10714 struct ppc_stub_hash_entry
*stub_entry
,
10715 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10717 bfd
*obfd
= htab
->params
->stub_bfd
;
10719 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10720 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10721 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10722 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10723 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10724 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10725 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10727 r
[0].r_offset
+= 7 * 4;
10728 if (!ALWAYS_EMIT_R2SAVE
10729 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10730 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10732 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10733 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10736 r
[0].r_offset
+= 2 * 4;
10737 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10738 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10740 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10741 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10742 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10743 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10748 static Elf_Internal_Rela
*
10749 get_relocs (asection
*sec
, int count
)
10751 Elf_Internal_Rela
*relocs
;
10752 struct bfd_elf_section_data
*elfsec_data
;
10754 elfsec_data
= elf_section_data (sec
);
10755 relocs
= elfsec_data
->relocs
;
10756 if (relocs
== NULL
)
10758 bfd_size_type relsize
;
10759 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10760 relocs
= bfd_alloc (sec
->owner
, relsize
);
10761 if (relocs
== NULL
)
10763 elfsec_data
->relocs
= relocs
;
10764 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10765 sizeof (Elf_Internal_Shdr
));
10766 if (elfsec_data
->rela
.hdr
== NULL
)
10768 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10769 * sizeof (Elf64_External_Rela
));
10770 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10771 sec
->reloc_count
= 0;
10773 relocs
+= sec
->reloc_count
;
10774 sec
->reloc_count
+= count
;
10779 get_r2off (struct bfd_link_info
*info
,
10780 struct ppc_stub_hash_entry
*stub_entry
)
10782 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10783 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10787 /* Support linking -R objects. Get the toc pointer from the
10790 if (!htab
->opd_abi
)
10792 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10793 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10795 if (strcmp (opd
->name
, ".opd") != 0
10796 || opd
->reloc_count
!= 0)
10798 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%pT'\n"),
10799 stub_entry
->h
->elf
.root
.root
.string
);
10800 bfd_set_error (bfd_error_bad_value
);
10801 return (bfd_vma
) -1;
10803 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10804 return (bfd_vma
) -1;
10805 r2off
= bfd_get_64 (opd
->owner
, buf
);
10806 r2off
-= elf_gp (info
->output_bfd
);
10808 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10813 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10815 struct ppc_stub_hash_entry
*stub_entry
;
10816 struct ppc_branch_hash_entry
*br_entry
;
10817 struct bfd_link_info
*info
;
10818 struct ppc_link_hash_table
*htab
;
10822 Elf_Internal_Rela
*r
;
10825 /* Massage our args to the form they really have. */
10826 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10829 htab
= ppc_hash_table (info
);
10833 /* Make a note of the offset within the stubs for this entry. */
10834 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10835 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10837 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10838 switch (stub_entry
->stub_type
)
10840 case ppc_stub_long_branch
:
10841 case ppc_stub_long_branch_r2off
:
10842 /* Branches are relative. This is where we are going to. */
10843 dest
= (stub_entry
->target_value
10844 + stub_entry
->target_section
->output_offset
10845 + stub_entry
->target_section
->output_section
->vma
);
10846 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10849 /* And this is where we are coming from. */
10850 off
-= (stub_entry
->stub_offset
10851 + stub_entry
->group
->stub_sec
->output_offset
10852 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10855 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10857 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10859 if (r2off
== (bfd_vma
) -1)
10861 htab
->stub_error
= TRUE
;
10864 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
10866 if (PPC_HA (r2off
) != 0)
10868 bfd_put_32 (htab
->params
->stub_bfd
,
10869 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
10872 if (PPC_LO (r2off
) != 0)
10874 bfd_put_32 (htab
->params
->stub_bfd
,
10875 ADDI_R2_R2
| PPC_LO (r2off
), p
);
10880 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), p
);
10883 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10886 (_("long branch stub `%s' offset overflow"),
10887 stub_entry
->root
.string
);
10888 htab
->stub_error
= TRUE
;
10892 if (info
->emitrelocations
)
10894 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10897 r
->r_offset
= p
- 4 - stub_entry
->group
->stub_sec
->contents
;
10898 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10899 r
->r_addend
= dest
;
10900 if (stub_entry
->h
!= NULL
)
10902 struct elf_link_hash_entry
**hashes
;
10903 unsigned long symndx
;
10904 struct ppc_link_hash_entry
*h
;
10906 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10907 if (hashes
== NULL
)
10909 bfd_size_type hsize
;
10911 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10912 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10913 if (hashes
== NULL
)
10915 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10916 htab
->stub_globals
= 1;
10918 symndx
= htab
->stub_globals
++;
10920 hashes
[symndx
] = &h
->elf
;
10921 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10922 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10923 h
= ppc_follow_link (h
->oh
);
10924 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10925 /* H is an opd symbol. The addend must be zero. */
10929 off
= (h
->elf
.root
.u
.def
.value
10930 + h
->elf
.root
.u
.def
.section
->output_offset
10931 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10932 r
->r_addend
-= off
;
10938 case ppc_stub_plt_branch
:
10939 case ppc_stub_plt_branch_r2off
:
10940 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10941 stub_entry
->root
.string
+ 9,
10943 if (br_entry
== NULL
)
10945 _bfd_error_handler (_("can't find branch stub `%s'"),
10946 stub_entry
->root
.string
);
10947 htab
->stub_error
= TRUE
;
10951 dest
= (stub_entry
->target_value
10952 + stub_entry
->target_section
->output_offset
10953 + stub_entry
->target_section
->output_section
->vma
);
10954 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10955 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10957 bfd_put_64 (htab
->brlt
->owner
, dest
,
10958 htab
->brlt
->contents
+ br_entry
->offset
);
10960 if (br_entry
->iter
== htab
->stub_iteration
)
10962 br_entry
->iter
= 0;
10964 if (htab
->relbrlt
!= NULL
)
10966 /* Create a reloc for the branch lookup table entry. */
10967 Elf_Internal_Rela rela
;
10970 rela
.r_offset
= (br_entry
->offset
10971 + htab
->brlt
->output_offset
10972 + htab
->brlt
->output_section
->vma
);
10973 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10974 rela
.r_addend
= dest
;
10976 rl
= htab
->relbrlt
->contents
;
10977 rl
+= (htab
->relbrlt
->reloc_count
++
10978 * sizeof (Elf64_External_Rela
));
10979 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10981 else if (info
->emitrelocations
)
10983 r
= get_relocs (htab
->brlt
, 1);
10986 /* brlt, being SEC_LINKER_CREATED does not go through the
10987 normal reloc processing. Symbols and offsets are not
10988 translated from input file to output file form, so
10989 set up the offset per the output file. */
10990 r
->r_offset
= (br_entry
->offset
10991 + htab
->brlt
->output_offset
10992 + htab
->brlt
->output_section
->vma
);
10993 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10994 r
->r_addend
= dest
;
10998 dest
= (br_entry
->offset
10999 + htab
->brlt
->output_offset
11000 + htab
->brlt
->output_section
->vma
);
11003 - elf_gp (info
->output_bfd
)
11004 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11006 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11008 info
->callbacks
->einfo
11009 (_("%P: linkage table error against `%pT'\n"),
11010 stub_entry
->root
.string
);
11011 bfd_set_error (bfd_error_bad_value
);
11012 htab
->stub_error
= TRUE
;
11016 if (info
->emitrelocations
)
11018 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11021 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11022 if (bfd_big_endian (info
->output_bfd
))
11023 r
[0].r_offset
+= 2;
11024 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11025 r
[0].r_offset
+= 4;
11026 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11027 r
[0].r_addend
= dest
;
11028 if (PPC_HA (off
) != 0)
11030 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11031 r
[1].r_offset
= r
[0].r_offset
+ 4;
11032 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11033 r
[1].r_addend
= r
[0].r_addend
;
11038 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11040 if (PPC_HA (off
) != 0)
11042 bfd_put_32 (htab
->params
->stub_bfd
,
11043 ADDIS_R12_R2
| PPC_HA (off
), p
);
11045 bfd_put_32 (htab
->params
->stub_bfd
,
11046 LD_R12_0R12
| PPC_LO (off
), p
);
11049 bfd_put_32 (htab
->params
->stub_bfd
,
11050 LD_R12_0R2
| PPC_LO (off
), p
);
11054 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11056 if (r2off
== (bfd_vma
) -1)
11058 htab
->stub_error
= TRUE
;
11062 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
11064 if (PPC_HA (off
) != 0)
11066 bfd_put_32 (htab
->params
->stub_bfd
,
11067 ADDIS_R12_R2
| PPC_HA (off
), p
);
11069 bfd_put_32 (htab
->params
->stub_bfd
,
11070 LD_R12_0R12
| PPC_LO (off
), p
);
11073 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), p
);
11075 if (PPC_HA (r2off
) != 0)
11078 bfd_put_32 (htab
->params
->stub_bfd
,
11079 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
11081 if (PPC_LO (r2off
) != 0)
11084 bfd_put_32 (htab
->params
->stub_bfd
,
11085 ADDI_R2_R2
| PPC_LO (r2off
), p
);
11089 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, p
);
11091 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, p
);
11095 case ppc_stub_plt_call
:
11096 case ppc_stub_plt_call_r2save
:
11097 if (stub_entry
->h
!= NULL
11098 && stub_entry
->h
->is_func_descriptor
11099 && stub_entry
->h
->oh
!= NULL
)
11101 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11103 /* If the old-ABI "dot-symbol" is undefined make it weak so
11104 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11105 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11106 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11107 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11108 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11111 /* Now build the stub. */
11112 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11113 if (dest
>= (bfd_vma
) -2)
11116 plt
= htab
->elf
.splt
;
11117 if (!htab
->elf
.dynamic_sections_created
11118 || stub_entry
->h
== NULL
11119 || stub_entry
->h
->elf
.dynindx
== -1)
11120 plt
= htab
->elf
.iplt
;
11122 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11124 if (stub_entry
->h
== NULL
11125 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11127 Elf_Internal_Rela rela
;
11130 rela
.r_offset
= dest
;
11132 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11134 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11135 rela
.r_addend
= (stub_entry
->target_value
11136 + stub_entry
->target_section
->output_offset
11137 + stub_entry
->target_section
->output_section
->vma
);
11139 rl
= (htab
->elf
.irelplt
->contents
11140 + (htab
->elf
.irelplt
->reloc_count
++
11141 * sizeof (Elf64_External_Rela
)));
11142 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11143 stub_entry
->plt_ent
->plt
.offset
|= 1;
11144 htab
->local_ifunc_resolver
= 1;
11148 - elf_gp (info
->output_bfd
)
11149 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11151 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11153 info
->callbacks
->einfo
11154 /* xgettext:c-format */
11155 (_("%P: linkage table error against `%pT'\n"),
11156 stub_entry
->h
!= NULL
11157 ? stub_entry
->h
->elf
.root
.root
.string
11159 bfd_set_error (bfd_error_bad_value
);
11160 htab
->stub_error
= TRUE
;
11164 if (htab
->params
->plt_stub_align
!= 0)
11166 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11168 stub_entry
->group
->stub_sec
->size
+= pad
;
11169 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11174 if (info
->emitrelocations
)
11176 r
= get_relocs (stub_entry
->group
->stub_sec
,
11177 ((PPC_HA (off
) != 0)
11179 ? 2 + (htab
->params
->plt_static_chain
11180 && PPC_HA (off
+ 16) == PPC_HA (off
))
11184 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11185 if (bfd_big_endian (info
->output_bfd
))
11186 r
[0].r_offset
+= 2;
11187 r
[0].r_addend
= dest
;
11189 if (stub_entry
->h
!= NULL
11190 && (stub_entry
->h
== htab
->tls_get_addr_fd
11191 || stub_entry
->h
== htab
->tls_get_addr
)
11192 && htab
->params
->tls_get_addr_opt
)
11193 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11195 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11198 case ppc_stub_save_res
:
11206 stub_entry
->group
->stub_sec
->size
+= p
- loc
;
11208 if (htab
->params
->emit_stub_syms
)
11210 struct elf_link_hash_entry
*h
;
11213 const char *const stub_str
[] = { "long_branch",
11214 "long_branch_r2off",
11216 "plt_branch_r2off",
11220 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11221 len2
= strlen (stub_entry
->root
.string
);
11222 name
= bfd_malloc (len1
+ len2
+ 2);
11225 memcpy (name
, stub_entry
->root
.string
, 9);
11226 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11227 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11228 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11231 if (h
->root
.type
== bfd_link_hash_new
)
11233 h
->root
.type
= bfd_link_hash_defined
;
11234 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11235 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11236 h
->ref_regular
= 1;
11237 h
->def_regular
= 1;
11238 h
->ref_regular_nonweak
= 1;
11239 h
->forced_local
= 1;
11241 h
->root
.linker_def
= 1;
11248 /* As above, but don't actually build the stub. Just bump offset so
11249 we know stub section sizes, and select plt_branch stubs where
11250 long_branch stubs won't do. */
11253 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11255 struct ppc_stub_hash_entry
*stub_entry
;
11256 struct bfd_link_info
*info
;
11257 struct ppc_link_hash_table
*htab
;
11261 /* Massage our args to the form they really have. */
11262 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11265 htab
= ppc_hash_table (info
);
11269 if (stub_entry
->h
!= NULL
11270 && stub_entry
->h
->save_res
11271 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11272 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11274 /* Don't make stubs to out-of-line register save/restore
11275 functions. Instead, emit copies of the functions. */
11276 stub_entry
->group
->needs_save_res
= 1;
11277 stub_entry
->stub_type
= ppc_stub_save_res
;
11281 if (stub_entry
->stub_type
== ppc_stub_plt_call
11282 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11285 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11286 if (off
>= (bfd_vma
) -2)
11288 plt
= htab
->elf
.splt
;
11289 if (!htab
->elf
.dynamic_sections_created
11290 || stub_entry
->h
== NULL
11291 || stub_entry
->h
->elf
.dynindx
== -1)
11292 plt
= htab
->elf
.iplt
;
11293 off
+= (plt
->output_offset
11294 + plt
->output_section
->vma
11295 - elf_gp (info
->output_bfd
)
11296 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11298 size
= plt_stub_size (htab
, stub_entry
, off
);
11299 if (stub_entry
->h
!= NULL
11300 && (stub_entry
->h
== htab
->tls_get_addr_fd
11301 || stub_entry
->h
== htab
->tls_get_addr
)
11302 && htab
->params
->tls_get_addr_opt
11303 && (ALWAYS_EMIT_R2SAVE
11304 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11305 stub_entry
->group
->tls_get_addr_opt_bctrl
11306 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11308 if (htab
->params
->plt_stub_align
)
11309 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11310 if (info
->emitrelocations
)
11312 stub_entry
->group
->stub_sec
->reloc_count
11313 += ((PPC_HA (off
) != 0)
11315 ? 2 + (htab
->params
->plt_static_chain
11316 && PPC_HA (off
+ 16) == PPC_HA (off
))
11318 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11323 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11326 bfd_vma local_off
= 0;
11328 off
= (stub_entry
->target_value
11329 + stub_entry
->target_section
->output_offset
11330 + stub_entry
->target_section
->output_section
->vma
);
11331 off
-= (stub_entry
->group
->stub_sec
->size
11332 + stub_entry
->group
->stub_sec
->output_offset
11333 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11335 /* Reset the stub type from the plt variant in case we now
11336 can reach with a shorter stub. */
11337 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11338 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11341 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11343 r2off
= get_r2off (info
, stub_entry
);
11344 if (r2off
== (bfd_vma
) -1)
11346 htab
->stub_error
= TRUE
;
11350 if (PPC_HA (r2off
) != 0)
11352 if (PPC_LO (r2off
) != 0)
11357 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11359 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11360 Do the same for -R objects without function descriptors. */
11361 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11362 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11364 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11366 struct ppc_branch_hash_entry
*br_entry
;
11368 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11369 stub_entry
->root
.string
+ 9,
11371 if (br_entry
== NULL
)
11373 _bfd_error_handler (_("can't build branch stub `%s'"),
11374 stub_entry
->root
.string
);
11375 htab
->stub_error
= TRUE
;
11379 if (br_entry
->iter
!= htab
->stub_iteration
)
11381 br_entry
->iter
= htab
->stub_iteration
;
11382 br_entry
->offset
= htab
->brlt
->size
;
11383 htab
->brlt
->size
+= 8;
11385 if (htab
->relbrlt
!= NULL
)
11386 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11387 else if (info
->emitrelocations
)
11389 htab
->brlt
->reloc_count
+= 1;
11390 htab
->brlt
->flags
|= SEC_RELOC
;
11394 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11395 off
= (br_entry
->offset
11396 + htab
->brlt
->output_offset
11397 + htab
->brlt
->output_section
->vma
11398 - elf_gp (info
->output_bfd
)
11399 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11401 if (info
->emitrelocations
)
11403 stub_entry
->group
->stub_sec
->reloc_count
11404 += 1 + (PPC_HA (off
) != 0);
11405 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11408 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11411 if (PPC_HA (off
) != 0)
11417 if (PPC_HA (off
) != 0)
11420 if (PPC_HA (r2off
) != 0)
11422 if (PPC_LO (r2off
) != 0)
11426 else if (info
->emitrelocations
)
11428 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11429 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11433 stub_entry
->group
->stub_sec
->size
+= size
;
11437 /* Set up various things so that we can make a list of input sections
11438 for each output section included in the link. Returns -1 on error,
11439 0 when no stubs will be needed, and 1 on success. */
11442 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11446 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11451 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11452 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11453 htab
->sec_info
= bfd_zmalloc (amt
);
11454 if (htab
->sec_info
== NULL
)
11457 /* Set toc_off for com, und, abs and ind sections. */
11458 for (id
= 0; id
< 3; id
++)
11459 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11464 /* Set up for first pass at multitoc partitioning. */
11467 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11469 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11471 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11472 htab
->toc_bfd
= NULL
;
11473 htab
->toc_first_sec
= NULL
;
11476 /* The linker repeatedly calls this function for each TOC input section
11477 and linker generated GOT section. Group input bfds such that the toc
11478 within a group is less than 64k in size. */
11481 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11483 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11484 bfd_vma addr
, off
, limit
;
11489 if (!htab
->second_toc_pass
)
11491 /* Keep track of the first .toc or .got section for this input bfd. */
11492 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11496 htab
->toc_bfd
= isec
->owner
;
11497 htab
->toc_first_sec
= isec
;
11500 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11501 off
= addr
- htab
->toc_curr
;
11502 limit
= 0x80008000;
11503 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11505 if (off
+ isec
->size
> limit
)
11507 addr
= (htab
->toc_first_sec
->output_offset
11508 + htab
->toc_first_sec
->output_section
->vma
);
11509 htab
->toc_curr
= addr
;
11510 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11513 /* toc_curr is the base address of this toc group. Set elf_gp
11514 for the input section to be the offset relative to the
11515 output toc base plus 0x8000. Making the input elf_gp an
11516 offset allows us to move the toc as a whole without
11517 recalculating input elf_gp. */
11518 off
= htab
->toc_curr
- elf_gp (info
->output_bfd
);
11519 off
+= TOC_BASE_OFF
;
11521 /* Die if someone uses a linker script that doesn't keep input
11522 file .toc and .got together. */
11524 && elf_gp (isec
->owner
) != 0
11525 && elf_gp (isec
->owner
) != off
)
11528 elf_gp (isec
->owner
) = off
;
11532 /* During the second pass toc_first_sec points to the start of
11533 a toc group, and toc_curr is used to track the old elf_gp.
11534 We use toc_bfd to ensure we only look at each bfd once. */
11535 if (htab
->toc_bfd
== isec
->owner
)
11537 htab
->toc_bfd
= isec
->owner
;
11539 if (htab
->toc_first_sec
== NULL
11540 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11542 htab
->toc_curr
= elf_gp (isec
->owner
);
11543 htab
->toc_first_sec
= isec
;
11545 addr
= (htab
->toc_first_sec
->output_offset
11546 + htab
->toc_first_sec
->output_section
->vma
);
11547 off
= addr
- elf_gp (info
->output_bfd
) + TOC_BASE_OFF
;
11548 elf_gp (isec
->owner
) = off
;
11553 /* Called via elf_link_hash_traverse to merge GOT entries for global
11557 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11559 if (h
->root
.type
== bfd_link_hash_indirect
)
11562 merge_got_entries (&h
->got
.glist
);
11567 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11571 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11573 struct got_entry
*gent
;
11575 if (h
->root
.type
== bfd_link_hash_indirect
)
11578 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11579 if (!gent
->is_indirect
)
11580 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11584 /* Called on the first multitoc pass after the last call to
11585 ppc64_elf_next_toc_section. This function removes duplicate GOT
11589 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11591 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11592 struct bfd
*ibfd
, *ibfd2
;
11593 bfd_boolean done_something
;
11595 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11597 if (!htab
->do_multi_toc
)
11600 /* Merge global sym got entries within a toc group. */
11601 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11603 /* And tlsld_got. */
11604 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11606 struct got_entry
*ent
, *ent2
;
11608 if (!is_ppc64_elf (ibfd
))
11611 ent
= ppc64_tlsld_got (ibfd
);
11612 if (!ent
->is_indirect
11613 && ent
->got
.offset
!= (bfd_vma
) -1)
11615 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11617 if (!is_ppc64_elf (ibfd2
))
11620 ent2
= ppc64_tlsld_got (ibfd2
);
11621 if (!ent2
->is_indirect
11622 && ent2
->got
.offset
!= (bfd_vma
) -1
11623 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11625 ent2
->is_indirect
= TRUE
;
11626 ent2
->got
.ent
= ent
;
11632 /* Zap sizes of got sections. */
11633 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11634 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11635 htab
->got_reli_size
= 0;
11637 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11639 asection
*got
, *relgot
;
11641 if (!is_ppc64_elf (ibfd
))
11644 got
= ppc64_elf_tdata (ibfd
)->got
;
11647 got
->rawsize
= got
->size
;
11649 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11650 relgot
->rawsize
= relgot
->size
;
11655 /* Now reallocate the got, local syms first. We don't need to
11656 allocate section contents again since we never increase size. */
11657 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11659 struct got_entry
**lgot_ents
;
11660 struct got_entry
**end_lgot_ents
;
11661 struct plt_entry
**local_plt
;
11662 struct plt_entry
**end_local_plt
;
11663 unsigned char *lgot_masks
;
11664 bfd_size_type locsymcount
;
11665 Elf_Internal_Shdr
*symtab_hdr
;
11668 if (!is_ppc64_elf (ibfd
))
11671 lgot_ents
= elf_local_got_ents (ibfd
);
11675 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11676 locsymcount
= symtab_hdr
->sh_info
;
11677 end_lgot_ents
= lgot_ents
+ locsymcount
;
11678 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11679 end_local_plt
= local_plt
+ locsymcount
;
11680 lgot_masks
= (unsigned char *) end_local_plt
;
11681 s
= ppc64_elf_tdata (ibfd
)->got
;
11682 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11684 struct got_entry
*ent
;
11686 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11688 unsigned int ent_size
= 8;
11689 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11691 ent
->got
.offset
= s
->size
;
11692 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11697 s
->size
+= ent_size
;
11698 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11700 htab
->elf
.irelplt
->size
+= rel_size
;
11701 htab
->got_reli_size
+= rel_size
;
11703 else if (bfd_link_pic (info
))
11705 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11706 srel
->size
+= rel_size
;
11712 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11714 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11716 struct got_entry
*ent
;
11718 if (!is_ppc64_elf (ibfd
))
11721 ent
= ppc64_tlsld_got (ibfd
);
11722 if (!ent
->is_indirect
11723 && ent
->got
.offset
!= (bfd_vma
) -1)
11725 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11726 ent
->got
.offset
= s
->size
;
11728 if (bfd_link_pic (info
))
11730 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11731 srel
->size
+= sizeof (Elf64_External_Rela
);
11736 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11737 if (!done_something
)
11738 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11742 if (!is_ppc64_elf (ibfd
))
11745 got
= ppc64_elf_tdata (ibfd
)->got
;
11748 done_something
= got
->rawsize
!= got
->size
;
11749 if (done_something
)
11754 if (done_something
)
11755 (*htab
->params
->layout_sections_again
) ();
11757 /* Set up for second pass over toc sections to recalculate elf_gp
11758 on input sections. */
11759 htab
->toc_bfd
= NULL
;
11760 htab
->toc_first_sec
= NULL
;
11761 htab
->second_toc_pass
= TRUE
;
11762 return done_something
;
11765 /* Called after second pass of multitoc partitioning. */
11768 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11770 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11772 /* After the second pass, toc_curr tracks the TOC offset used
11773 for code sections below in ppc64_elf_next_input_section. */
11774 htab
->toc_curr
= TOC_BASE_OFF
;
11777 /* No toc references were found in ISEC. If the code in ISEC makes no
11778 calls, then there's no need to use toc adjusting stubs when branching
11779 into ISEC. Actually, indirect calls from ISEC are OK as they will
11780 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11781 needed, and 2 if a cyclical call-graph was found but no other reason
11782 for a stub was detected. If called from the top level, a return of
11783 2 means the same as a return of 0. */
11786 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11790 /* Mark this section as checked. */
11791 isec
->call_check_done
= 1;
11793 /* We know none of our code bearing sections will need toc stubs. */
11794 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11797 if (isec
->size
== 0)
11800 if (isec
->output_section
== NULL
)
11804 if (isec
->reloc_count
!= 0)
11806 Elf_Internal_Rela
*relstart
, *rel
;
11807 Elf_Internal_Sym
*local_syms
;
11808 struct ppc_link_hash_table
*htab
;
11810 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11811 info
->keep_memory
);
11812 if (relstart
== NULL
)
11815 /* Look for branches to outside of this section. */
11817 htab
= ppc_hash_table (info
);
11821 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11823 enum elf_ppc64_reloc_type r_type
;
11824 unsigned long r_symndx
;
11825 struct elf_link_hash_entry
*h
;
11826 struct ppc_link_hash_entry
*eh
;
11827 Elf_Internal_Sym
*sym
;
11829 struct _opd_sec_data
*opd
;
11833 r_type
= ELF64_R_TYPE (rel
->r_info
);
11834 if (r_type
!= R_PPC64_REL24
11835 && r_type
!= R_PPC64_REL14
11836 && r_type
!= R_PPC64_REL14_BRTAKEN
11837 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11840 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11841 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11848 /* Calls to dynamic lib functions go through a plt call stub
11850 eh
= (struct ppc_link_hash_entry
*) h
;
11852 && (eh
->elf
.plt
.plist
!= NULL
11854 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11860 if (sym_sec
== NULL
)
11861 /* Ignore other undefined symbols. */
11864 /* Assume branches to other sections not included in the
11865 link need stubs too, to cover -R and absolute syms. */
11866 if (sym_sec
->output_section
== NULL
)
11873 sym_value
= sym
->st_value
;
11876 if (h
->root
.type
!= bfd_link_hash_defined
11877 && h
->root
.type
!= bfd_link_hash_defweak
)
11879 sym_value
= h
->root
.u
.def
.value
;
11881 sym_value
+= rel
->r_addend
;
11883 /* If this branch reloc uses an opd sym, find the code section. */
11884 opd
= get_opd_info (sym_sec
);
11887 if (h
== NULL
&& opd
->adjust
!= NULL
)
11891 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11893 /* Assume deleted functions won't ever be called. */
11895 sym_value
+= adjust
;
11898 dest
= opd_entry_value (sym_sec
, sym_value
,
11899 &sym_sec
, NULL
, FALSE
);
11900 if (dest
== (bfd_vma
) -1)
11905 + sym_sec
->output_offset
11906 + sym_sec
->output_section
->vma
);
11908 /* Ignore branch to self. */
11909 if (sym_sec
== isec
)
11912 /* If the called function uses the toc, we need a stub. */
11913 if (sym_sec
->has_toc_reloc
11914 || sym_sec
->makes_toc_func_call
)
11920 /* Assume any branch that needs a long branch stub might in fact
11921 need a plt_branch stub. A plt_branch stub uses r2. */
11922 else if (dest
- (isec
->output_offset
11923 + isec
->output_section
->vma
11924 + rel
->r_offset
) + (1 << 25)
11925 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11933 /* If calling back to a section in the process of being
11934 tested, we can't say for sure that no toc adjusting stubs
11935 are needed, so don't return zero. */
11936 else if (sym_sec
->call_check_in_progress
)
11939 /* Branches to another section that itself doesn't have any TOC
11940 references are OK. Recursively call ourselves to check. */
11941 else if (!sym_sec
->call_check_done
)
11945 /* Mark current section as indeterminate, so that other
11946 sections that call back to current won't be marked as
11948 isec
->call_check_in_progress
= 1;
11949 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11950 isec
->call_check_in_progress
= 0;
11961 if (local_syms
!= NULL
11962 && (elf_symtab_hdr (isec
->owner
).contents
11963 != (unsigned char *) local_syms
))
11965 if (elf_section_data (isec
)->relocs
!= relstart
)
11970 && isec
->map_head
.s
!= NULL
11971 && (strcmp (isec
->output_section
->name
, ".init") == 0
11972 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11974 if (isec
->map_head
.s
->has_toc_reloc
11975 || isec
->map_head
.s
->makes_toc_func_call
)
11977 else if (!isec
->map_head
.s
->call_check_done
)
11980 isec
->call_check_in_progress
= 1;
11981 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11982 isec
->call_check_in_progress
= 0;
11989 isec
->makes_toc_func_call
= 1;
11994 /* The linker repeatedly calls this function for each input section,
11995 in the order that input sections are linked into output sections.
11996 Build lists of input sections to determine groupings between which
11997 we may insert linker stubs. */
12000 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12002 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12007 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12008 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12010 /* This happens to make the list in reverse order,
12011 which is what we want. */
12012 htab
->sec_info
[isec
->id
].u
.list
12013 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12014 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12017 if (htab
->multi_toc_needed
)
12019 /* Analyse sections that aren't already flagged as needing a
12020 valid toc pointer. Exclude .fixup for the linux kernel.
12021 .fixup contains branches, but only back to the function that
12022 hit an exception. */
12023 if (!(isec
->has_toc_reloc
12024 || (isec
->flags
& SEC_CODE
) == 0
12025 || strcmp (isec
->name
, ".fixup") == 0
12026 || isec
->call_check_done
))
12028 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12031 /* Make all sections use the TOC assigned for this object file.
12032 This will be wrong for pasted sections; We fix that in
12033 check_pasted_section(). */
12034 if (elf_gp (isec
->owner
) != 0)
12035 htab
->toc_curr
= elf_gp (isec
->owner
);
12038 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12042 /* Check that all .init and .fini sections use the same toc, if they
12043 have toc relocs. */
12046 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12048 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12052 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12053 bfd_vma toc_off
= 0;
12056 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12057 if (i
->has_toc_reloc
)
12060 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12061 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12066 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12067 if (i
->makes_toc_func_call
)
12069 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12073 /* Make sure the whole pasted function uses the same toc offset. */
12075 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12076 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12082 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12084 return (check_pasted_section (info
, ".init")
12085 & check_pasted_section (info
, ".fini"));
12088 /* See whether we can group stub sections together. Grouping stub
12089 sections may result in fewer stubs. More importantly, we need to
12090 put all .init* and .fini* stubs at the beginning of the .init or
12091 .fini output sections respectively, because glibc splits the
12092 _init and _fini functions into multiple parts. Putting a stub in
12093 the middle of a function is not a good idea. */
12096 group_sections (struct bfd_link_info
*info
,
12097 bfd_size_type stub_group_size
,
12098 bfd_boolean stubs_always_before_branch
)
12100 struct ppc_link_hash_table
*htab
;
12102 bfd_boolean suppress_size_errors
;
12104 htab
= ppc_hash_table (info
);
12108 suppress_size_errors
= FALSE
;
12109 if (stub_group_size
== 1)
12111 /* Default values. */
12112 if (stubs_always_before_branch
)
12113 stub_group_size
= 0x1e00000;
12115 stub_group_size
= 0x1c00000;
12116 suppress_size_errors
= TRUE
;
12119 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12123 if (osec
->id
>= htab
->sec_info_arr_size
)
12126 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12127 while (tail
!= NULL
)
12131 bfd_size_type total
;
12132 bfd_boolean big_sec
;
12134 struct map_stub
*group
;
12135 bfd_size_type group_size
;
12138 total
= tail
->size
;
12139 group_size
= (ppc64_elf_section_data (tail
) != NULL
12140 && ppc64_elf_section_data (tail
)->has_14bit_branch
12141 ? stub_group_size
>> 10 : stub_group_size
);
12143 big_sec
= total
> group_size
;
12144 if (big_sec
&& !suppress_size_errors
)
12145 /* xgettext:c-format */
12146 _bfd_error_handler (_("%pB section %pA exceeds stub group size"),
12147 tail
->owner
, tail
);
12148 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12150 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12151 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12152 < (ppc64_elf_section_data (prev
) != NULL
12153 && ppc64_elf_section_data (prev
)->has_14bit_branch
12154 ? (group_size
= stub_group_size
>> 10) : group_size
))
12155 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12158 /* OK, the size from the start of CURR to the end is less
12159 than group_size and thus can be handled by one stub
12160 section. (or the tail section is itself larger than
12161 group_size, in which case we may be toast.) We should
12162 really be keeping track of the total size of stubs added
12163 here, as stubs contribute to the final output section
12164 size. That's a little tricky, and this way will only
12165 break if stubs added make the total size more than 2^25,
12166 ie. for the default stub_group_size, if stubs total more
12167 than 2097152 bytes, or nearly 75000 plt call stubs. */
12168 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12171 group
->link_sec
= curr
;
12172 group
->stub_sec
= NULL
;
12173 group
->needs_save_res
= 0;
12174 group
->tls_get_addr_opt_bctrl
= -1u;
12175 group
->next
= htab
->group
;
12176 htab
->group
= group
;
12179 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12180 /* Set up this stub group. */
12181 htab
->sec_info
[tail
->id
].u
.group
= group
;
12183 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12185 /* But wait, there's more! Input sections up to group_size
12186 bytes before the stub section can be handled by it too.
12187 Don't do this if we have a really large section after the
12188 stubs, as adding more stubs increases the chance that
12189 branches may not reach into the stub section. */
12190 if (!stubs_always_before_branch
&& !big_sec
)
12193 while (prev
!= NULL
12194 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12195 < (ppc64_elf_section_data (prev
) != NULL
12196 && ppc64_elf_section_data (prev
)->has_14bit_branch
12197 ? (group_size
= stub_group_size
>> 10) : group_size
))
12198 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12201 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12202 htab
->sec_info
[tail
->id
].u
.group
= group
;
12211 static const unsigned char glink_eh_frame_cie
[] =
12213 0, 0, 0, 16, /* length. */
12214 0, 0, 0, 0, /* id. */
12215 1, /* CIE version. */
12216 'z', 'R', 0, /* Augmentation string. */
12217 4, /* Code alignment. */
12218 0x78, /* Data alignment. */
12220 1, /* Augmentation size. */
12221 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12222 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12226 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12228 size_t this_size
= 17;
12229 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12231 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12234 else if (to_bctrl
< 256)
12236 else if (to_bctrl
< 65536)
12242 this_size
= (this_size
+ align
- 1) & -align
;
12246 /* Stripping output sections is normally done before dynamic section
12247 symbols have been allocated. This function is called later, and
12248 handles cases like htab->brlt which is mapped to its own output
12252 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12254 if (isec
->size
== 0
12255 && isec
->output_section
->size
== 0
12256 && !(isec
->output_section
->flags
& SEC_KEEP
)
12257 && !bfd_section_removed_from_list (info
->output_bfd
,
12258 isec
->output_section
)
12259 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12261 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12262 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12263 info
->output_bfd
->section_count
--;
12267 /* Determine and set the size of the stub section for a final link.
12269 The basic idea here is to examine all the relocations looking for
12270 PC-relative calls to a target that is unreachable with a "bl"
12274 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12276 bfd_size_type stub_group_size
;
12277 bfd_boolean stubs_always_before_branch
;
12278 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12283 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12284 htab
->params
->plt_thread_safe
= 1;
12285 if (!htab
->opd_abi
)
12286 htab
->params
->plt_thread_safe
= 0;
12287 else if (htab
->params
->plt_thread_safe
== -1)
12289 static const char *const thread_starter
[] =
12293 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12295 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12296 "mq_notify", "create_timer",
12301 "GOMP_parallel_start",
12302 "GOMP_parallel_loop_static",
12303 "GOMP_parallel_loop_static_start",
12304 "GOMP_parallel_loop_dynamic",
12305 "GOMP_parallel_loop_dynamic_start",
12306 "GOMP_parallel_loop_guided",
12307 "GOMP_parallel_loop_guided_start",
12308 "GOMP_parallel_loop_runtime",
12309 "GOMP_parallel_loop_runtime_start",
12310 "GOMP_parallel_sections",
12311 "GOMP_parallel_sections_start",
12317 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12319 struct elf_link_hash_entry
*h
;
12320 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12321 FALSE
, FALSE
, TRUE
);
12322 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12323 if (htab
->params
->plt_thread_safe
)
12327 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12328 if (htab
->params
->group_size
< 0)
12329 stub_group_size
= -htab
->params
->group_size
;
12331 stub_group_size
= htab
->params
->group_size
;
12333 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12336 #define STUB_SHRINK_ITER 20
12337 /* Loop until no stubs added. After iteration 20 of this loop we may
12338 exit on a stub section shrinking. This is to break out of a
12339 pathological case where adding stubs on one iteration decreases
12340 section gaps (perhaps due to alignment), which then requires
12341 fewer or smaller stubs on the next iteration. */
12346 unsigned int bfd_indx
;
12347 struct map_stub
*group
;
12349 htab
->stub_iteration
+= 1;
12351 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12353 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12355 Elf_Internal_Shdr
*symtab_hdr
;
12357 Elf_Internal_Sym
*local_syms
= NULL
;
12359 if (!is_ppc64_elf (input_bfd
))
12362 /* We'll need the symbol table in a second. */
12363 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12364 if (symtab_hdr
->sh_info
== 0)
12367 /* Walk over each section attached to the input bfd. */
12368 for (section
= input_bfd
->sections
;
12370 section
= section
->next
)
12372 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12374 /* If there aren't any relocs, then there's nothing more
12376 if ((section
->flags
& SEC_RELOC
) == 0
12377 || (section
->flags
& SEC_ALLOC
) == 0
12378 || (section
->flags
& SEC_LOAD
) == 0
12379 || (section
->flags
& SEC_CODE
) == 0
12380 || section
->reloc_count
== 0)
12383 /* If this section is a link-once section that will be
12384 discarded, then don't create any stubs. */
12385 if (section
->output_section
== NULL
12386 || section
->output_section
->owner
!= info
->output_bfd
)
12389 /* Get the relocs. */
12391 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12392 info
->keep_memory
);
12393 if (internal_relocs
== NULL
)
12394 goto error_ret_free_local
;
12396 /* Now examine each relocation. */
12397 irela
= internal_relocs
;
12398 irelaend
= irela
+ section
->reloc_count
;
12399 for (; irela
< irelaend
; irela
++)
12401 enum elf_ppc64_reloc_type r_type
;
12402 unsigned int r_indx
;
12403 enum ppc_stub_type stub_type
;
12404 struct ppc_stub_hash_entry
*stub_entry
;
12405 asection
*sym_sec
, *code_sec
;
12406 bfd_vma sym_value
, code_value
;
12407 bfd_vma destination
;
12408 unsigned long local_off
;
12409 bfd_boolean ok_dest
;
12410 struct ppc_link_hash_entry
*hash
;
12411 struct ppc_link_hash_entry
*fdh
;
12412 struct elf_link_hash_entry
*h
;
12413 Elf_Internal_Sym
*sym
;
12415 const asection
*id_sec
;
12416 struct _opd_sec_data
*opd
;
12417 struct plt_entry
*plt_ent
;
12419 r_type
= ELF64_R_TYPE (irela
->r_info
);
12420 r_indx
= ELF64_R_SYM (irela
->r_info
);
12422 if (r_type
>= R_PPC64_max
)
12424 bfd_set_error (bfd_error_bad_value
);
12425 goto error_ret_free_internal
;
12428 /* Only look for stubs on branch instructions. */
12429 if (r_type
!= R_PPC64_REL24
12430 && r_type
!= R_PPC64_REL14
12431 && r_type
!= R_PPC64_REL14_BRTAKEN
12432 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12435 /* Now determine the call target, its name, value,
12437 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12438 r_indx
, input_bfd
))
12439 goto error_ret_free_internal
;
12440 hash
= (struct ppc_link_hash_entry
*) h
;
12447 sym_value
= sym
->st_value
;
12448 if (sym_sec
!= NULL
12449 && sym_sec
->output_section
!= NULL
)
12452 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12453 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12455 sym_value
= hash
->elf
.root
.u
.def
.value
;
12456 if (sym_sec
->output_section
!= NULL
)
12459 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12460 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12462 /* Recognise an old ABI func code entry sym, and
12463 use the func descriptor sym instead if it is
12465 if (hash
->elf
.root
.root
.string
[0] == '.'
12466 && hash
->oh
!= NULL
)
12468 fdh
= ppc_follow_link (hash
->oh
);
12469 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12470 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12472 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12473 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12474 if (sym_sec
->output_section
!= NULL
)
12483 bfd_set_error (bfd_error_bad_value
);
12484 goto error_ret_free_internal
;
12491 sym_value
+= irela
->r_addend
;
12492 destination
= (sym_value
12493 + sym_sec
->output_offset
12494 + sym_sec
->output_section
->vma
);
12495 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12500 code_sec
= sym_sec
;
12501 code_value
= sym_value
;
12502 opd
= get_opd_info (sym_sec
);
12507 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12509 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12512 code_value
+= adjust
;
12513 sym_value
+= adjust
;
12515 dest
= opd_entry_value (sym_sec
, sym_value
,
12516 &code_sec
, &code_value
, FALSE
);
12517 if (dest
!= (bfd_vma
) -1)
12519 destination
= dest
;
12522 /* Fixup old ABI sym to point at code
12524 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12525 hash
->elf
.root
.u
.def
.section
= code_sec
;
12526 hash
->elf
.root
.u
.def
.value
= code_value
;
12531 /* Determine what (if any) linker stub is needed. */
12533 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12534 &plt_ent
, destination
,
12537 if (stub_type
!= ppc_stub_plt_call
)
12539 /* Check whether we need a TOC adjusting stub.
12540 Since the linker pastes together pieces from
12541 different object files when creating the
12542 _init and _fini functions, it may be that a
12543 call to what looks like a local sym is in
12544 fact a call needing a TOC adjustment. */
12545 if (code_sec
!= NULL
12546 && code_sec
->output_section
!= NULL
12547 && (htab
->sec_info
[code_sec
->id
].toc_off
12548 != htab
->sec_info
[section
->id
].toc_off
)
12549 && (code_sec
->has_toc_reloc
12550 || code_sec
->makes_toc_func_call
))
12551 stub_type
= ppc_stub_long_branch_r2off
;
12554 if (stub_type
== ppc_stub_none
)
12557 /* __tls_get_addr calls might be eliminated. */
12558 if (stub_type
!= ppc_stub_plt_call
12560 && (hash
== htab
->tls_get_addr
12561 || hash
== htab
->tls_get_addr_fd
)
12562 && section
->has_tls_reloc
12563 && irela
!= internal_relocs
)
12565 /* Get tls info. */
12566 unsigned char *tls_mask
;
12568 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12569 irela
- 1, input_bfd
))
12570 goto error_ret_free_internal
;
12571 if (*tls_mask
!= 0)
12575 if (stub_type
== ppc_stub_plt_call
)
12578 && htab
->params
->plt_localentry0
!= 0
12579 && is_elfv2_localentry0 (&hash
->elf
))
12580 htab
->has_plt_localentry0
= 1;
12581 else if (irela
+ 1 < irelaend
12582 && irela
[1].r_offset
== irela
->r_offset
+ 4
12583 && (ELF64_R_TYPE (irela
[1].r_info
)
12584 == R_PPC64_TOCSAVE
))
12586 if (!tocsave_find (htab
, INSERT
,
12587 &local_syms
, irela
+ 1, input_bfd
))
12588 goto error_ret_free_internal
;
12591 stub_type
= ppc_stub_plt_call_r2save
;
12594 /* Support for grouping stub sections. */
12595 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12597 /* Get the name of this stub. */
12598 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12600 goto error_ret_free_internal
;
12602 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12603 stub_name
, FALSE
, FALSE
);
12604 if (stub_entry
!= NULL
)
12606 /* The proper stub has already been created. */
12608 if (stub_type
== ppc_stub_plt_call_r2save
)
12609 stub_entry
->stub_type
= stub_type
;
12613 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12614 if (stub_entry
== NULL
)
12617 error_ret_free_internal
:
12618 if (elf_section_data (section
)->relocs
== NULL
)
12619 free (internal_relocs
);
12620 error_ret_free_local
:
12621 if (local_syms
!= NULL
12622 && (symtab_hdr
->contents
12623 != (unsigned char *) local_syms
))
12628 stub_entry
->stub_type
= stub_type
;
12629 if (stub_type
!= ppc_stub_plt_call
12630 && stub_type
!= ppc_stub_plt_call_r2save
)
12632 stub_entry
->target_value
= code_value
;
12633 stub_entry
->target_section
= code_sec
;
12637 stub_entry
->target_value
= sym_value
;
12638 stub_entry
->target_section
= sym_sec
;
12640 stub_entry
->h
= hash
;
12641 stub_entry
->plt_ent
= plt_ent
;
12642 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12644 if (stub_entry
->h
!= NULL
)
12645 htab
->stub_globals
+= 1;
12648 /* We're done with the internal relocs, free them. */
12649 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12650 free (internal_relocs
);
12653 if (local_syms
!= NULL
12654 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12656 if (!info
->keep_memory
)
12659 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12663 /* We may have added some stubs. Find out the new size of the
12665 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12666 if (group
->stub_sec
!= NULL
)
12668 asection
*stub_sec
= group
->stub_sec
;
12670 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12671 || stub_sec
->rawsize
< stub_sec
->size
)
12672 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12673 stub_sec
->rawsize
= stub_sec
->size
;
12674 stub_sec
->size
= 0;
12675 stub_sec
->reloc_count
= 0;
12676 stub_sec
->flags
&= ~SEC_RELOC
;
12679 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12680 || htab
->brlt
->rawsize
< htab
->brlt
->size
)
12681 htab
->brlt
->rawsize
= htab
->brlt
->size
;
12682 htab
->brlt
->size
= 0;
12683 htab
->brlt
->reloc_count
= 0;
12684 htab
->brlt
->flags
&= ~SEC_RELOC
;
12685 if (htab
->relbrlt
!= NULL
)
12686 htab
->relbrlt
->size
= 0;
12688 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12690 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12691 if (group
->needs_save_res
)
12692 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12694 if (info
->emitrelocations
12695 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12697 htab
->glink
->reloc_count
= 1;
12698 htab
->glink
->flags
|= SEC_RELOC
;
12701 if (htab
->glink_eh_frame
!= NULL
12702 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12703 && htab
->glink_eh_frame
->output_section
->size
> 8)
12705 size_t size
= 0, align
= 4;
12707 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12708 if (group
->stub_sec
!= NULL
)
12709 size
+= stub_eh_frame_size (group
, align
);
12710 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12711 size
+= (24 + align
- 1) & -align
;
12713 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12714 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12715 size
= (size
+ align
- 1) & -align
;
12716 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12717 htab
->glink_eh_frame
->size
= size
;
12720 if (htab
->params
->plt_stub_align
!= 0)
12721 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12722 if (group
->stub_sec
!= NULL
)
12724 int align
= abs (htab
->params
->plt_stub_align
);
12725 group
->stub_sec
->size
12726 = (group
->stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
12729 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12730 if (group
->stub_sec
!= NULL
12731 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12732 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12733 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12737 && (htab
->brlt
->rawsize
== htab
->brlt
->size
12738 || (htab
->stub_iteration
> STUB_SHRINK_ITER
12739 && htab
->brlt
->rawsize
> htab
->brlt
->size
))
12740 && (htab
->glink_eh_frame
== NULL
12741 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12744 /* Ask the linker to do its stuff. */
12745 (*htab
->params
->layout_sections_again
) ();
12748 if (htab
->glink_eh_frame
!= NULL
12749 && htab
->glink_eh_frame
->size
!= 0)
12752 bfd_byte
*p
, *last_fde
;
12753 size_t last_fde_len
, size
, align
, pad
;
12754 struct map_stub
*group
;
12756 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12759 htab
->glink_eh_frame
->contents
= p
;
12763 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12764 /* CIE length (rewrite in case little-endian). */
12765 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12766 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12767 p
+= last_fde_len
+ 4;
12769 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12770 if (group
->stub_sec
!= NULL
)
12773 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12775 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12778 val
= p
- htab
->glink_eh_frame
->contents
;
12779 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12781 /* Offset to stub section, written later. */
12783 /* stub section size. */
12784 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12786 /* Augmentation. */
12788 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12790 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12792 /* This FDE needs more than just the default.
12793 Describe __tls_get_addr_opt stub LR. */
12795 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12796 else if (to_bctrl
< 256)
12798 *p
++ = DW_CFA_advance_loc1
;
12801 else if (to_bctrl
< 65536)
12803 *p
++ = DW_CFA_advance_loc2
;
12804 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12809 *p
++ = DW_CFA_advance_loc4
;
12810 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12813 *p
++ = DW_CFA_offset_extended_sf
;
12815 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12816 *p
++ = DW_CFA_advance_loc
+ 4;
12817 *p
++ = DW_CFA_restore_extended
;
12821 p
= last_fde
+ last_fde_len
+ 4;
12823 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12826 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12828 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12831 val
= p
- htab
->glink_eh_frame
->contents
;
12832 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12834 /* Offset to .glink, written later. */
12837 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12839 /* Augmentation. */
12842 *p
++ = DW_CFA_advance_loc
+ 1;
12843 *p
++ = DW_CFA_register
;
12845 *p
++ = htab
->opd_abi
? 12 : 0;
12846 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12847 *p
++ = DW_CFA_restore_extended
;
12849 p
+= ((24 + align
- 1) & -align
) - 24;
12851 /* Subsume any padding into the last FDE if user .eh_frame
12852 sections are aligned more than glink_eh_frame. Otherwise any
12853 zero padding will be seen as a terminator. */
12854 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12855 size
= p
- htab
->glink_eh_frame
->contents
;
12856 pad
= ((size
+ align
- 1) & -align
) - size
;
12857 htab
->glink_eh_frame
->size
= size
+ pad
;
12858 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12861 maybe_strip_output (info
, htab
->brlt
);
12862 if (htab
->glink_eh_frame
!= NULL
)
12863 maybe_strip_output (info
, htab
->glink_eh_frame
);
12868 /* Called after we have determined section placement. If sections
12869 move, we'll be called again. Provide a value for TOCstart. */
12872 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12875 bfd_vma TOCstart
, adjust
;
12879 struct elf_link_hash_entry
*h
;
12880 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12882 if (is_elf_hash_table (htab
)
12883 && htab
->hgot
!= NULL
)
12887 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12888 if (is_elf_hash_table (htab
))
12892 && h
->root
.type
== bfd_link_hash_defined
12893 && !h
->root
.linker_def
12894 && (!is_elf_hash_table (htab
)
12895 || h
->def_regular
))
12897 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12898 + h
->root
.u
.def
.section
->output_offset
12899 + h
->root
.u
.def
.section
->output_section
->vma
);
12900 _bfd_set_gp_value (obfd
, TOCstart
);
12905 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12906 order. The TOC starts where the first of these sections starts. */
12907 s
= bfd_get_section_by_name (obfd
, ".got");
12908 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12909 s
= bfd_get_section_by_name (obfd
, ".toc");
12910 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12911 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12912 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12913 s
= bfd_get_section_by_name (obfd
, ".plt");
12914 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12916 /* This may happen for
12917 o references to TOC base (SYM@toc / TOC[tc0]) without a
12919 o bad linker script
12920 o --gc-sections and empty TOC sections
12922 FIXME: Warn user? */
12924 /* Look for a likely section. We probably won't even be
12926 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12927 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12929 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12932 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12933 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12934 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12937 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12938 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12942 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12943 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12949 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12951 /* Force alignment. */
12952 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12953 TOCstart
-= adjust
;
12954 _bfd_set_gp_value (obfd
, TOCstart
);
12956 if (info
!= NULL
&& s
!= NULL
)
12958 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12962 if (htab
->elf
.hgot
!= NULL
)
12964 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12965 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12970 struct bfd_link_hash_entry
*bh
= NULL
;
12971 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12972 s
, TOC_BASE_OFF
- adjust
,
12973 NULL
, FALSE
, FALSE
, &bh
);
12979 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12980 write out any global entry stubs. */
12983 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12985 struct bfd_link_info
*info
;
12986 struct ppc_link_hash_table
*htab
;
12987 struct plt_entry
*pent
;
12990 if (h
->root
.type
== bfd_link_hash_indirect
)
12993 if (!h
->pointer_equality_needed
)
12996 if (h
->def_regular
)
13000 htab
= ppc_hash_table (info
);
13004 s
= htab
->global_entry
;
13005 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13006 if (pent
->plt
.offset
!= (bfd_vma
) -1
13007 && pent
->addend
== 0)
13013 p
= s
->contents
+ h
->root
.u
.def
.value
;
13014 plt
= htab
->elf
.splt
;
13015 if (!htab
->elf
.dynamic_sections_created
13016 || h
->dynindx
== -1)
13017 plt
= htab
->elf
.iplt
;
13018 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13019 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13021 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13023 info
->callbacks
->einfo
13024 (_("%P: linkage table error against `%pT'\n"),
13025 h
->root
.root
.string
);
13026 bfd_set_error (bfd_error_bad_value
);
13027 htab
->stub_error
= TRUE
;
13030 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13031 if (htab
->params
->emit_stub_syms
)
13033 size_t len
= strlen (h
->root
.root
.string
);
13034 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13039 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13040 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13043 if (h
->root
.type
== bfd_link_hash_new
)
13045 h
->root
.type
= bfd_link_hash_defined
;
13046 h
->root
.u
.def
.section
= s
;
13047 h
->root
.u
.def
.value
= p
- s
->contents
;
13048 h
->ref_regular
= 1;
13049 h
->def_regular
= 1;
13050 h
->ref_regular_nonweak
= 1;
13051 h
->forced_local
= 1;
13053 h
->root
.linker_def
= 1;
13057 if (PPC_HA (off
) != 0)
13059 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13062 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13064 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13066 bfd_put_32 (s
->owner
, BCTR
, p
);
13072 /* Build all the stubs associated with the current output file.
13073 The stubs are kept in a hash table attached to the main linker
13074 hash table. This function is called via gldelf64ppc_finish. */
13077 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13080 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13081 struct map_stub
*group
;
13082 asection
*stub_sec
;
13084 int stub_sec_count
= 0;
13089 /* Allocate memory to hold the linker stubs. */
13090 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13091 if ((stub_sec
= group
->stub_sec
) != NULL
13092 && stub_sec
->size
!= 0)
13094 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13095 if (stub_sec
->contents
== NULL
)
13097 stub_sec
->size
= 0;
13100 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13105 /* Build the .glink plt call stub. */
13106 if (htab
->params
->emit_stub_syms
)
13108 struct elf_link_hash_entry
*h
;
13109 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13110 TRUE
, FALSE
, FALSE
);
13113 if (h
->root
.type
== bfd_link_hash_new
)
13115 h
->root
.type
= bfd_link_hash_defined
;
13116 h
->root
.u
.def
.section
= htab
->glink
;
13117 h
->root
.u
.def
.value
= 8;
13118 h
->ref_regular
= 1;
13119 h
->def_regular
= 1;
13120 h
->ref_regular_nonweak
= 1;
13121 h
->forced_local
= 1;
13123 h
->root
.linker_def
= 1;
13126 plt0
= (htab
->elf
.splt
->output_section
->vma
13127 + htab
->elf
.splt
->output_offset
13129 if (info
->emitrelocations
)
13131 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13134 r
->r_offset
= (htab
->glink
->output_offset
13135 + htab
->glink
->output_section
->vma
);
13136 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13137 r
->r_addend
= plt0
;
13139 p
= htab
->glink
->contents
;
13140 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13141 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13145 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13147 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13149 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13151 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13153 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13155 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13157 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13159 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13161 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13163 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13168 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13170 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13172 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13174 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13176 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13178 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13180 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13182 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13184 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13186 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13188 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13190 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13192 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13195 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13197 BFD_ASSERT (p
== htab
->glink
->contents
+ GLINK_PLTRESOLVE_SIZE (htab
));
13199 /* Build the .glink lazy link call stubs. */
13201 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
13207 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13212 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13214 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13219 bfd_put_32 (htab
->glink
->owner
,
13220 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13226 /* Build .glink global entry stubs. */
13227 if (htab
->global_entry
!= NULL
&& htab
->global_entry
->size
!= 0)
13228 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13230 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13232 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13234 if (htab
->brlt
->contents
== NULL
)
13237 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13239 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13240 htab
->relbrlt
->size
);
13241 if (htab
->relbrlt
->contents
== NULL
)
13245 /* Build the stubs as directed by the stub hash table. */
13246 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13248 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13249 if (group
->needs_save_res
)
13251 stub_sec
= group
->stub_sec
;
13252 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13254 if (htab
->params
->emit_stub_syms
)
13258 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13259 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13262 stub_sec
->size
+= htab
->sfpr
->size
;
13265 if (htab
->relbrlt
!= NULL
)
13266 htab
->relbrlt
->reloc_count
= 0;
13268 if (htab
->params
->plt_stub_align
!= 0)
13269 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13270 if ((stub_sec
= group
->stub_sec
) != NULL
)
13272 int align
= abs (htab
->params
->plt_stub_align
);
13273 stub_sec
->size
= (stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
13276 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13277 if ((stub_sec
= group
->stub_sec
) != NULL
)
13279 stub_sec_count
+= 1;
13280 if (stub_sec
->rawsize
!= stub_sec
->size
13281 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13282 || stub_sec
->rawsize
< stub_sec
->size
))
13288 htab
->stub_error
= TRUE
;
13289 _bfd_error_handler (_("stubs don't match calculated size"));
13292 if (htab
->stub_error
)
13298 *stats
= bfd_malloc (500);
13299 if (*stats
== NULL
)
13302 len
= sprintf (*stats
,
13303 ngettext ("linker stubs in %u group\n",
13304 "linker stubs in %u groups\n",
13307 sprintf (*stats
+ len
, _(" branch %lu\n"
13308 " toc adjust %lu\n"
13309 " long branch %lu\n"
13310 " long toc adj %lu\n"
13312 " plt call toc %lu\n"
13313 " global entry %lu"),
13314 htab
->stub_count
[ppc_stub_long_branch
- 1],
13315 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13316 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13317 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13318 htab
->stub_count
[ppc_stub_plt_call
- 1],
13319 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13320 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13325 /* What to do when ld finds relocations against symbols defined in
13326 discarded sections. */
13328 static unsigned int
13329 ppc64_elf_action_discarded (asection
*sec
)
13331 if (strcmp (".opd", sec
->name
) == 0)
13334 if (strcmp (".toc", sec
->name
) == 0)
13337 if (strcmp (".toc1", sec
->name
) == 0)
13340 return _bfd_elf_default_action_discarded (sec
);
13343 /* The RELOCATE_SECTION function is called by the ELF backend linker
13344 to handle the relocations for a section.
13346 The relocs are always passed as Rela structures; if the section
13347 actually uses Rel structures, the r_addend field will always be
13350 This function is responsible for adjust the section contents as
13351 necessary, and (if using Rela relocs and generating a
13352 relocatable output file) adjusting the reloc addend as
13355 This function does not have to worry about setting the reloc
13356 address or the reloc symbol index.
13358 LOCAL_SYMS is a pointer to the swapped in local symbols.
13360 LOCAL_SECTIONS is an array giving the section in the input file
13361 corresponding to the st_shndx field of each local symbol.
13363 The global hash table entry for the global symbols can be found
13364 via elf_sym_hashes (input_bfd).
13366 When generating relocatable output, this function must handle
13367 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13368 going to be the section symbol corresponding to the output
13369 section, which means that the addend must be adjusted
13373 ppc64_elf_relocate_section (bfd
*output_bfd
,
13374 struct bfd_link_info
*info
,
13376 asection
*input_section
,
13377 bfd_byte
*contents
,
13378 Elf_Internal_Rela
*relocs
,
13379 Elf_Internal_Sym
*local_syms
,
13380 asection
**local_sections
)
13382 struct ppc_link_hash_table
*htab
;
13383 Elf_Internal_Shdr
*symtab_hdr
;
13384 struct elf_link_hash_entry
**sym_hashes
;
13385 Elf_Internal_Rela
*rel
;
13386 Elf_Internal_Rela
*wrel
;
13387 Elf_Internal_Rela
*relend
;
13388 Elf_Internal_Rela outrel
;
13390 struct got_entry
**local_got_ents
;
13392 bfd_boolean ret
= TRUE
;
13393 bfd_boolean is_opd
;
13394 /* Assume 'at' branch hints. */
13395 bfd_boolean is_isa_v2
= TRUE
;
13396 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13398 /* Initialize howto table if needed. */
13399 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13402 htab
= ppc_hash_table (info
);
13406 /* Don't relocate stub sections. */
13407 if (input_section
->owner
== htab
->params
->stub_bfd
)
13410 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13412 local_got_ents
= elf_local_got_ents (input_bfd
);
13413 TOCstart
= elf_gp (output_bfd
);
13414 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13415 sym_hashes
= elf_sym_hashes (input_bfd
);
13416 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13418 rel
= wrel
= relocs
;
13419 relend
= relocs
+ input_section
->reloc_count
;
13420 for (; rel
< relend
; wrel
++, rel
++)
13422 enum elf_ppc64_reloc_type r_type
;
13424 bfd_reloc_status_type r
;
13425 Elf_Internal_Sym
*sym
;
13427 struct elf_link_hash_entry
*h_elf
;
13428 struct ppc_link_hash_entry
*h
;
13429 struct ppc_link_hash_entry
*fdh
;
13430 const char *sym_name
;
13431 unsigned long r_symndx
, toc_symndx
;
13432 bfd_vma toc_addend
;
13433 unsigned char tls_mask
, tls_gd
, tls_type
;
13434 unsigned char sym_type
;
13435 bfd_vma relocation
;
13436 bfd_boolean unresolved_reloc
;
13437 bfd_boolean warned
;
13438 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13441 struct ppc_stub_hash_entry
*stub_entry
;
13442 bfd_vma max_br_offset
;
13444 Elf_Internal_Rela orig_rel
;
13445 reloc_howto_type
*howto
;
13446 struct reloc_howto_struct alt_howto
;
13451 r_type
= ELF64_R_TYPE (rel
->r_info
);
13452 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13454 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13455 symbol of the previous ADDR64 reloc. The symbol gives us the
13456 proper TOC base to use. */
13457 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13459 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13461 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13467 unresolved_reloc
= FALSE
;
13470 if (r_symndx
< symtab_hdr
->sh_info
)
13472 /* It's a local symbol. */
13473 struct _opd_sec_data
*opd
;
13475 sym
= local_syms
+ r_symndx
;
13476 sec
= local_sections
[r_symndx
];
13477 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13478 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13479 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13480 opd
= get_opd_info (sec
);
13481 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13483 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13489 /* If this is a relocation against the opd section sym
13490 and we have edited .opd, adjust the reloc addend so
13491 that ld -r and ld --emit-relocs output is correct.
13492 If it is a reloc against some other .opd symbol,
13493 then the symbol value will be adjusted later. */
13494 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13495 rel
->r_addend
+= adjust
;
13497 relocation
+= adjust
;
13503 bfd_boolean ignored
;
13505 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13506 r_symndx
, symtab_hdr
, sym_hashes
,
13507 h_elf
, sec
, relocation
,
13508 unresolved_reloc
, warned
, ignored
);
13509 sym_name
= h_elf
->root
.root
.string
;
13510 sym_type
= h_elf
->type
;
13512 && sec
->owner
== output_bfd
13513 && strcmp (sec
->name
, ".opd") == 0)
13515 /* This is a symbol defined in a linker script. All
13516 such are defined in output sections, even those
13517 defined by simple assignment from a symbol defined in
13518 an input section. Transfer the symbol to an
13519 appropriate input .opd section, so that a branch to
13520 this symbol will be mapped to the location specified
13521 by the opd entry. */
13522 struct bfd_link_order
*lo
;
13523 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13524 if (lo
->type
== bfd_indirect_link_order
)
13526 asection
*isec
= lo
->u
.indirect
.section
;
13527 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13528 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13531 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13532 h_elf
->root
.u
.def
.section
= isec
;
13539 h
= (struct ppc_link_hash_entry
*) h_elf
;
13541 if (sec
!= NULL
&& discarded_section (sec
))
13543 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13544 input_bfd
, input_section
,
13545 contents
+ rel
->r_offset
);
13546 wrel
->r_offset
= rel
->r_offset
;
13548 wrel
->r_addend
= 0;
13550 /* For ld -r, remove relocations in debug sections against
13551 symbols defined in discarded sections. Not done for
13552 non-debug to preserve relocs in .eh_frame which the
13553 eh_frame editing code expects to be present. */
13554 if (bfd_link_relocatable (info
)
13555 && (input_section
->flags
& SEC_DEBUGGING
))
13561 if (bfd_link_relocatable (info
))
13564 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13566 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13567 sec
= bfd_abs_section_ptr
;
13568 unresolved_reloc
= FALSE
;
13571 /* TLS optimizations. Replace instruction sequences and relocs
13572 based on information we collected in tls_optimize. We edit
13573 RELOCS so that --emit-relocs will output something sensible
13574 for the final instruction stream. */
13579 tls_mask
= h
->tls_mask
;
13580 else if (local_got_ents
!= NULL
)
13582 struct plt_entry
**local_plt
= (struct plt_entry
**)
13583 (local_got_ents
+ symtab_hdr
->sh_info
);
13584 unsigned char *lgot_masks
= (unsigned char *)
13585 (local_plt
+ symtab_hdr
->sh_info
);
13586 tls_mask
= lgot_masks
[r_symndx
];
13589 && (r_type
== R_PPC64_TLS
13590 || r_type
== R_PPC64_TLSGD
13591 || r_type
== R_PPC64_TLSLD
))
13593 /* Check for toc tls entries. */
13594 unsigned char *toc_tls
;
13596 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13597 &local_syms
, rel
, input_bfd
))
13601 tls_mask
= *toc_tls
;
13604 /* Check that tls relocs are used with tls syms, and non-tls
13605 relocs are used with non-tls syms. */
13606 if (r_symndx
!= STN_UNDEF
13607 && r_type
!= R_PPC64_NONE
13609 || h
->elf
.root
.type
== bfd_link_hash_defined
13610 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13611 && (IS_PPC64_TLS_RELOC (r_type
)
13612 != (sym_type
== STT_TLS
13613 || (sym_type
== STT_SECTION
13614 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13617 && (r_type
== R_PPC64_TLS
13618 || r_type
== R_PPC64_TLSGD
13619 || r_type
== R_PPC64_TLSLD
))
13620 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13623 info
->callbacks
->einfo
13624 (!IS_PPC64_TLS_RELOC (r_type
)
13625 /* xgettext:c-format */
13626 ? _("%H: %s used with TLS symbol `%pT'\n")
13627 /* xgettext:c-format */
13628 : _("%H: %s used with non-TLS symbol `%pT'\n"),
13629 input_bfd
, input_section
, rel
->r_offset
,
13630 ppc64_elf_howto_table
[r_type
]->name
,
13634 /* Ensure reloc mapping code below stays sane. */
13635 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13636 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13637 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13638 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13639 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13640 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13641 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13642 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13643 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13644 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13652 case R_PPC64_LO_DS_OPT
:
13653 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13654 if ((insn
& (0x3f << 26)) != 58u << 26)
13656 insn
+= (14u << 26) - (58u << 26);
13657 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13658 r_type
= R_PPC64_TOC16_LO
;
13659 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13662 case R_PPC64_TOC16
:
13663 case R_PPC64_TOC16_LO
:
13664 case R_PPC64_TOC16_DS
:
13665 case R_PPC64_TOC16_LO_DS
:
13667 /* Check for toc tls entries. */
13668 unsigned char *toc_tls
;
13671 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13672 &local_syms
, rel
, input_bfd
);
13678 tls_mask
= *toc_tls
;
13679 if (r_type
== R_PPC64_TOC16_DS
13680 || r_type
== R_PPC64_TOC16_LO_DS
)
13683 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13688 /* If we found a GD reloc pair, then we might be
13689 doing a GD->IE transition. */
13692 tls_gd
= TLS_TPRELGD
;
13693 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13696 else if (retval
== 3)
13698 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13706 case R_PPC64_GOT_TPREL16_HI
:
13707 case R_PPC64_GOT_TPREL16_HA
:
13709 && (tls_mask
& TLS_TPREL
) == 0)
13711 rel
->r_offset
-= d_offset
;
13712 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13713 r_type
= R_PPC64_NONE
;
13714 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13718 case R_PPC64_GOT_TPREL16_DS
:
13719 case R_PPC64_GOT_TPREL16_LO_DS
:
13721 && (tls_mask
& TLS_TPREL
) == 0)
13724 insn
= bfd_get_32 (input_bfd
,
13725 contents
+ rel
->r_offset
- d_offset
);
13727 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13728 bfd_put_32 (input_bfd
, insn
,
13729 contents
+ rel
->r_offset
- d_offset
);
13730 r_type
= R_PPC64_TPREL16_HA
;
13731 if (toc_symndx
!= 0)
13733 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13734 rel
->r_addend
= toc_addend
;
13735 /* We changed the symbol. Start over in order to
13736 get h, sym, sec etc. right. */
13740 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13746 && (tls_mask
& TLS_TPREL
) == 0)
13748 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13749 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13752 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13753 /* Was PPC64_TLS which sits on insn boundary, now
13754 PPC64_TPREL16_LO which is at low-order half-word. */
13755 rel
->r_offset
+= d_offset
;
13756 r_type
= R_PPC64_TPREL16_LO
;
13757 if (toc_symndx
!= 0)
13759 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13760 rel
->r_addend
= toc_addend
;
13761 /* We changed the symbol. Start over in order to
13762 get h, sym, sec etc. right. */
13766 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13770 case R_PPC64_GOT_TLSGD16_HI
:
13771 case R_PPC64_GOT_TLSGD16_HA
:
13772 tls_gd
= TLS_TPRELGD
;
13773 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13777 case R_PPC64_GOT_TLSLD16_HI
:
13778 case R_PPC64_GOT_TLSLD16_HA
:
13779 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13782 if ((tls_mask
& tls_gd
) != 0)
13783 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13784 + R_PPC64_GOT_TPREL16_DS
);
13787 rel
->r_offset
-= d_offset
;
13788 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13789 r_type
= R_PPC64_NONE
;
13791 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13795 case R_PPC64_GOT_TLSGD16
:
13796 case R_PPC64_GOT_TLSGD16_LO
:
13797 tls_gd
= TLS_TPRELGD
;
13798 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13802 case R_PPC64_GOT_TLSLD16
:
13803 case R_PPC64_GOT_TLSLD16_LO
:
13804 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13806 unsigned int insn1
, insn2
;
13810 offset
= (bfd_vma
) -1;
13811 /* If not using the newer R_PPC64_TLSGD/LD to mark
13812 __tls_get_addr calls, we must trust that the call
13813 stays with its arg setup insns, ie. that the next
13814 reloc is the __tls_get_addr call associated with
13815 the current reloc. Edit both insns. */
13816 if (input_section
->has_tls_get_addr_call
13817 && rel
+ 1 < relend
13818 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13819 htab
->tls_get_addr
,
13820 htab
->tls_get_addr_fd
))
13821 offset
= rel
[1].r_offset
;
13822 /* We read the low GOT_TLS (or TOC16) insn because we
13823 need to keep the destination reg. It may be
13824 something other than the usual r3, and moved to r3
13825 before the call by intervening code. */
13826 insn1
= bfd_get_32 (input_bfd
,
13827 contents
+ rel
->r_offset
- d_offset
);
13828 if ((tls_mask
& tls_gd
) != 0)
13831 insn1
&= (0x1f << 21) | (0x1f << 16);
13832 insn1
|= 58 << 26; /* ld */
13833 insn2
= 0x7c636a14; /* add 3,3,13 */
13834 if (offset
!= (bfd_vma
) -1)
13835 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13836 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13837 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13838 + R_PPC64_GOT_TPREL16_DS
);
13840 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13841 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13846 insn1
&= 0x1f << 21;
13847 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13848 insn2
= 0x38630000; /* addi 3,3,0 */
13851 /* Was an LD reloc. */
13853 sec
= local_sections
[toc_symndx
];
13855 r_symndx
< symtab_hdr
->sh_info
;
13857 if (local_sections
[r_symndx
] == sec
)
13859 if (r_symndx
>= symtab_hdr
->sh_info
)
13860 r_symndx
= STN_UNDEF
;
13861 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13862 if (r_symndx
!= STN_UNDEF
)
13863 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13864 + sec
->output_offset
13865 + sec
->output_section
->vma
);
13867 else if (toc_symndx
!= 0)
13869 r_symndx
= toc_symndx
;
13870 rel
->r_addend
= toc_addend
;
13872 r_type
= R_PPC64_TPREL16_HA
;
13873 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13874 if (offset
!= (bfd_vma
) -1)
13876 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13877 R_PPC64_TPREL16_LO
);
13878 rel
[1].r_offset
= offset
+ d_offset
;
13879 rel
[1].r_addend
= rel
->r_addend
;
13882 bfd_put_32 (input_bfd
, insn1
,
13883 contents
+ rel
->r_offset
- d_offset
);
13884 if (offset
!= (bfd_vma
) -1)
13885 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13886 if ((tls_mask
& tls_gd
) == 0
13887 && (tls_gd
== 0 || toc_symndx
!= 0))
13889 /* We changed the symbol. Start over in order
13890 to get h, sym, sec etc. right. */
13896 case R_PPC64_TLSGD
:
13897 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13899 unsigned int insn2
;
13900 bfd_vma offset
= rel
->r_offset
;
13902 if ((tls_mask
& TLS_TPRELGD
) != 0)
13905 r_type
= R_PPC64_NONE
;
13906 insn2
= 0x7c636a14; /* add 3,3,13 */
13911 if (toc_symndx
!= 0)
13913 r_symndx
= toc_symndx
;
13914 rel
->r_addend
= toc_addend
;
13916 r_type
= R_PPC64_TPREL16_LO
;
13917 rel
->r_offset
= offset
+ d_offset
;
13918 insn2
= 0x38630000; /* addi 3,3,0 */
13920 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13921 /* Zap the reloc on the _tls_get_addr call too. */
13922 BFD_ASSERT (offset
== rel
[1].r_offset
);
13923 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13924 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13925 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13930 case R_PPC64_TLSLD
:
13931 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13933 unsigned int insn2
;
13934 bfd_vma offset
= rel
->r_offset
;
13937 sec
= local_sections
[toc_symndx
];
13939 r_symndx
< symtab_hdr
->sh_info
;
13941 if (local_sections
[r_symndx
] == sec
)
13943 if (r_symndx
>= symtab_hdr
->sh_info
)
13944 r_symndx
= STN_UNDEF
;
13945 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13946 if (r_symndx
!= STN_UNDEF
)
13947 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13948 + sec
->output_offset
13949 + sec
->output_section
->vma
);
13951 r_type
= R_PPC64_TPREL16_LO
;
13952 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13953 rel
->r_offset
= offset
+ d_offset
;
13954 /* Zap the reloc on the _tls_get_addr call too. */
13955 BFD_ASSERT (offset
== rel
[1].r_offset
);
13956 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13957 insn2
= 0x38630000; /* addi 3,3,0 */
13958 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13963 case R_PPC64_DTPMOD64
:
13964 if (rel
+ 1 < relend
13965 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13966 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13968 if ((tls_mask
& TLS_GD
) == 0)
13970 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13971 if ((tls_mask
& TLS_TPRELGD
) != 0)
13972 r_type
= R_PPC64_TPREL64
;
13975 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13976 r_type
= R_PPC64_NONE
;
13978 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13983 if ((tls_mask
& TLS_LD
) == 0)
13985 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13986 r_type
= R_PPC64_NONE
;
13987 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13992 case R_PPC64_TPREL64
:
13993 if ((tls_mask
& TLS_TPREL
) == 0)
13995 r_type
= R_PPC64_NONE
;
13996 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14000 case R_PPC64_ENTRY
:
14001 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14002 if (!bfd_link_pic (info
)
14003 && !info
->traditional_format
14004 && relocation
+ 0x80008000 <= 0xffffffff)
14006 unsigned int insn1
, insn2
;
14008 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14009 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14010 if ((insn1
& ~0xfffc) == LD_R2_0R12
14011 && insn2
== ADD_R2_R2_R12
)
14013 bfd_put_32 (input_bfd
,
14014 LIS_R2
+ PPC_HA (relocation
),
14015 contents
+ rel
->r_offset
);
14016 bfd_put_32 (input_bfd
,
14017 ADDI_R2_R2
+ PPC_LO (relocation
),
14018 contents
+ rel
->r_offset
+ 4);
14023 relocation
-= (rel
->r_offset
14024 + input_section
->output_offset
14025 + input_section
->output_section
->vma
);
14026 if (relocation
+ 0x80008000 <= 0xffffffff)
14028 unsigned int insn1
, insn2
;
14030 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14031 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14032 if ((insn1
& ~0xfffc) == LD_R2_0R12
14033 && insn2
== ADD_R2_R2_R12
)
14035 bfd_put_32 (input_bfd
,
14036 ADDIS_R2_R12
+ PPC_HA (relocation
),
14037 contents
+ rel
->r_offset
);
14038 bfd_put_32 (input_bfd
,
14039 ADDI_R2_R2
+ PPC_LO (relocation
),
14040 contents
+ rel
->r_offset
+ 4);
14046 case R_PPC64_REL16_HA
:
14047 /* If we are generating a non-PIC executable, edit
14048 . 0: addis 2,12,.TOC.-0b@ha
14049 . addi 2,2,.TOC.-0b@l
14050 used by ELFv2 global entry points to set up r2, to
14053 if .TOC. is in range. */
14054 if (!bfd_link_pic (info
)
14055 && !info
->traditional_format
14057 && rel
->r_addend
== d_offset
14058 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14059 && rel
+ 1 < relend
14060 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14061 && rel
[1].r_offset
== rel
->r_offset
+ 4
14062 && rel
[1].r_addend
== rel
->r_addend
+ 4
14063 && relocation
+ 0x80008000 <= 0xffffffff)
14065 unsigned int insn1
, insn2
;
14066 bfd_vma offset
= rel
->r_offset
- d_offset
;
14067 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14068 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14069 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14070 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14072 r_type
= R_PPC64_ADDR16_HA
;
14073 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14074 rel
->r_addend
-= d_offset
;
14075 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14076 rel
[1].r_addend
-= d_offset
+ 4;
14077 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14083 /* Handle other relocations that tweak non-addend part of insn. */
14085 max_br_offset
= 1 << 25;
14086 addend
= rel
->r_addend
;
14087 reloc_dest
= DEST_NORMAL
;
14093 case R_PPC64_TOCSAVE
:
14094 if (relocation
+ addend
== (rel
->r_offset
14095 + input_section
->output_offset
14096 + input_section
->output_section
->vma
)
14097 && tocsave_find (htab
, NO_INSERT
,
14098 &local_syms
, rel
, input_bfd
))
14100 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14102 || insn
== CROR_151515
|| insn
== CROR_313131
)
14103 bfd_put_32 (input_bfd
,
14104 STD_R2_0R1
+ STK_TOC (htab
),
14105 contents
+ rel
->r_offset
);
14109 /* Branch taken prediction relocations. */
14110 case R_PPC64_ADDR14_BRTAKEN
:
14111 case R_PPC64_REL14_BRTAKEN
:
14112 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14113 /* Fall through. */
14115 /* Branch not taken prediction relocations. */
14116 case R_PPC64_ADDR14_BRNTAKEN
:
14117 case R_PPC64_REL14_BRNTAKEN
:
14118 insn
|= bfd_get_32 (input_bfd
,
14119 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14120 /* Fall through. */
14122 case R_PPC64_REL14
:
14123 max_br_offset
= 1 << 15;
14124 /* Fall through. */
14126 case R_PPC64_REL24
:
14127 /* Calls to functions with a different TOC, such as calls to
14128 shared objects, need to alter the TOC pointer. This is
14129 done using a linkage stub. A REL24 branching to these
14130 linkage stubs needs to be followed by a nop, as the nop
14131 will be replaced with an instruction to restore the TOC
14136 && h
->oh
->is_func_descriptor
)
14137 fdh
= ppc_follow_link (h
->oh
);
14138 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14140 if (stub_entry
!= NULL
14141 && (stub_entry
->stub_type
== ppc_stub_plt_call
14142 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14143 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14144 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14146 bfd_boolean can_plt_call
= FALSE
;
14148 if (stub_entry
->stub_type
== ppc_stub_plt_call
14150 && htab
->params
->plt_localentry0
!= 0
14151 && is_elfv2_localentry0 (&h
->elf
))
14153 /* The function doesn't use or change r2. */
14154 can_plt_call
= TRUE
;
14157 /* All of these stubs may modify r2, so there must be a
14158 branch and link followed by a nop. The nop is
14159 replaced by an insn to restore r2. */
14160 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14164 br
= bfd_get_32 (input_bfd
,
14165 contents
+ rel
->r_offset
);
14170 nop
= bfd_get_32 (input_bfd
,
14171 contents
+ rel
->r_offset
+ 4);
14173 || nop
== CROR_151515
|| nop
== CROR_313131
)
14176 && (h
== htab
->tls_get_addr_fd
14177 || h
== htab
->tls_get_addr
)
14178 && htab
->params
->tls_get_addr_opt
)
14180 /* Special stub used, leave nop alone. */
14183 bfd_put_32 (input_bfd
,
14184 LD_R2_0R1
+ STK_TOC (htab
),
14185 contents
+ rel
->r_offset
+ 4);
14186 can_plt_call
= TRUE
;
14191 if (!can_plt_call
&& h
!= NULL
)
14193 const char *name
= h
->elf
.root
.root
.string
;
14198 if (strncmp (name
, "__libc_start_main", 17) == 0
14199 && (name
[17] == 0 || name
[17] == '@'))
14201 /* Allow crt1 branch to go via a toc adjusting
14202 stub. Other calls that never return could do
14203 the same, if we could detect such. */
14204 can_plt_call
= TRUE
;
14210 /* g++ as of 20130507 emits self-calls without a
14211 following nop. This is arguably wrong since we
14212 have conflicting information. On the one hand a
14213 global symbol and on the other a local call
14214 sequence, but don't error for this special case.
14215 It isn't possible to cheaply verify we have
14216 exactly such a call. Allow all calls to the same
14218 asection
*code_sec
= sec
;
14220 if (get_opd_info (sec
) != NULL
)
14222 bfd_vma off
= (relocation
+ addend
14223 - sec
->output_section
->vma
14224 - sec
->output_offset
);
14226 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14228 if (code_sec
== input_section
)
14229 can_plt_call
= TRUE
;
14234 if (stub_entry
->stub_type
== ppc_stub_plt_call
14235 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14236 info
->callbacks
->einfo
14237 /* xgettext:c-format */
14238 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14239 "recompile with -fPIC\n"),
14240 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14242 info
->callbacks
->einfo
14243 /* xgettext:c-format */
14244 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14245 "(-mcmodel=small toc adjust stub)\n"),
14246 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14248 bfd_set_error (bfd_error_bad_value
);
14253 && (stub_entry
->stub_type
== ppc_stub_plt_call
14254 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14255 unresolved_reloc
= FALSE
;
14258 if ((stub_entry
== NULL
14259 || stub_entry
->stub_type
== ppc_stub_long_branch
14260 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14261 && get_opd_info (sec
) != NULL
)
14263 /* The branch destination is the value of the opd entry. */
14264 bfd_vma off
= (relocation
+ addend
14265 - sec
->output_section
->vma
14266 - sec
->output_offset
);
14267 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14268 if (dest
!= (bfd_vma
) -1)
14272 reloc_dest
= DEST_OPD
;
14276 /* If the branch is out of reach we ought to have a long
14278 from
= (rel
->r_offset
14279 + input_section
->output_offset
14280 + input_section
->output_section
->vma
);
14282 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14286 if (stub_entry
!= NULL
14287 && (stub_entry
->stub_type
== ppc_stub_long_branch
14288 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14289 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14290 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14291 || (relocation
+ addend
- from
+ max_br_offset
14292 < 2 * max_br_offset
)))
14293 /* Don't use the stub if this branch is in range. */
14296 if (stub_entry
!= NULL
)
14298 /* Munge up the value and addend so that we call the stub
14299 rather than the procedure directly. */
14300 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14302 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14303 relocation
+= (stub_sec
->output_offset
14304 + stub_sec
->output_section
->vma
14305 + stub_sec
->size
- htab
->sfpr
->size
14306 - htab
->sfpr
->output_offset
14307 - htab
->sfpr
->output_section
->vma
);
14309 relocation
= (stub_entry
->stub_offset
14310 + stub_sec
->output_offset
14311 + stub_sec
->output_section
->vma
);
14313 reloc_dest
= DEST_STUB
;
14315 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14316 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14317 && (ALWAYS_EMIT_R2SAVE
14318 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14319 && rel
+ 1 < relend
14320 && rel
[1].r_offset
== rel
->r_offset
+ 4
14321 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14329 /* Set 'a' bit. This is 0b00010 in BO field for branch
14330 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14331 for branch on CTR insns (BO == 1a00t or 1a01t). */
14332 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14333 insn
|= 0x02 << 21;
14334 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14335 insn
|= 0x08 << 21;
14341 /* Invert 'y' bit if not the default. */
14342 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14343 insn
^= 0x01 << 21;
14346 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14349 /* NOP out calls to undefined weak functions.
14350 We can thus call a weak function without first
14351 checking whether the function is defined. */
14353 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14354 && h
->elf
.dynindx
== -1
14355 && r_type
== R_PPC64_REL24
14359 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14365 /* Set `addend'. */
14370 /* xgettext:c-format */
14371 _bfd_error_handler (_("%pB: %s unsupported"),
14372 input_bfd
, ppc64_elf_howto_table
[r_type
]->name
);
14374 bfd_set_error (bfd_error_bad_value
);
14380 case R_PPC64_TLSGD
:
14381 case R_PPC64_TLSLD
:
14382 case R_PPC64_TOCSAVE
:
14383 case R_PPC64_GNU_VTINHERIT
:
14384 case R_PPC64_GNU_VTENTRY
:
14385 case R_PPC64_ENTRY
:
14388 /* GOT16 relocations. Like an ADDR16 using the symbol's
14389 address in the GOT as relocation value instead of the
14390 symbol's value itself. Also, create a GOT entry for the
14391 symbol and put the symbol value there. */
14392 case R_PPC64_GOT_TLSGD16
:
14393 case R_PPC64_GOT_TLSGD16_LO
:
14394 case R_PPC64_GOT_TLSGD16_HI
:
14395 case R_PPC64_GOT_TLSGD16_HA
:
14396 tls_type
= TLS_TLS
| TLS_GD
;
14399 case R_PPC64_GOT_TLSLD16
:
14400 case R_PPC64_GOT_TLSLD16_LO
:
14401 case R_PPC64_GOT_TLSLD16_HI
:
14402 case R_PPC64_GOT_TLSLD16_HA
:
14403 tls_type
= TLS_TLS
| TLS_LD
;
14406 case R_PPC64_GOT_TPREL16_DS
:
14407 case R_PPC64_GOT_TPREL16_LO_DS
:
14408 case R_PPC64_GOT_TPREL16_HI
:
14409 case R_PPC64_GOT_TPREL16_HA
:
14410 tls_type
= TLS_TLS
| TLS_TPREL
;
14413 case R_PPC64_GOT_DTPREL16_DS
:
14414 case R_PPC64_GOT_DTPREL16_LO_DS
:
14415 case R_PPC64_GOT_DTPREL16_HI
:
14416 case R_PPC64_GOT_DTPREL16_HA
:
14417 tls_type
= TLS_TLS
| TLS_DTPREL
;
14420 case R_PPC64_GOT16
:
14421 case R_PPC64_GOT16_LO
:
14422 case R_PPC64_GOT16_HI
:
14423 case R_PPC64_GOT16_HA
:
14424 case R_PPC64_GOT16_DS
:
14425 case R_PPC64_GOT16_LO_DS
:
14428 /* Relocation is to the entry for this symbol in the global
14433 unsigned long indx
= 0;
14434 struct got_entry
*ent
;
14436 if (tls_type
== (TLS_TLS
| TLS_LD
)
14438 || !h
->elf
.def_dynamic
))
14439 ent
= ppc64_tlsld_got (input_bfd
);
14444 if (!htab
->elf
.dynamic_sections_created
14445 || h
->elf
.dynindx
== -1
14446 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14447 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14448 /* This is actually a static link, or it is a
14449 -Bsymbolic link and the symbol is defined
14450 locally, or the symbol was forced to be local
14451 because of a version file. */
14455 indx
= h
->elf
.dynindx
;
14456 unresolved_reloc
= FALSE
;
14458 ent
= h
->elf
.got
.glist
;
14462 if (local_got_ents
== NULL
)
14464 ent
= local_got_ents
[r_symndx
];
14467 for (; ent
!= NULL
; ent
= ent
->next
)
14468 if (ent
->addend
== orig_rel
.r_addend
14469 && ent
->owner
== input_bfd
14470 && ent
->tls_type
== tls_type
)
14476 if (ent
->is_indirect
)
14477 ent
= ent
->got
.ent
;
14478 offp
= &ent
->got
.offset
;
14479 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14483 /* The offset must always be a multiple of 8. We use the
14484 least significant bit to record whether we have already
14485 processed this entry. */
14487 if ((off
& 1) != 0)
14491 /* Generate relocs for the dynamic linker, except in
14492 the case of TLSLD where we'll use one entry per
14500 ? h
->elf
.type
== STT_GNU_IFUNC
14501 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14504 relgot
= htab
->elf
.irelplt
;
14506 htab
->local_ifunc_resolver
= 1;
14507 else if (is_static_defined (&h
->elf
))
14508 htab
->maybe_local_ifunc_resolver
= 1;
14511 || (bfd_link_pic (info
)
14513 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14514 || (tls_type
== (TLS_TLS
| TLS_LD
)
14515 && !h
->elf
.def_dynamic
))
14516 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
14517 && bfd_link_executable (info
)
14518 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
14519 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14520 if (relgot
!= NULL
)
14522 outrel
.r_offset
= (got
->output_section
->vma
14523 + got
->output_offset
14525 outrel
.r_addend
= addend
;
14526 if (tls_type
& (TLS_LD
| TLS_GD
))
14528 outrel
.r_addend
= 0;
14529 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14530 if (tls_type
== (TLS_TLS
| TLS_GD
))
14532 loc
= relgot
->contents
;
14533 loc
+= (relgot
->reloc_count
++
14534 * sizeof (Elf64_External_Rela
));
14535 bfd_elf64_swap_reloca_out (output_bfd
,
14537 outrel
.r_offset
+= 8;
14538 outrel
.r_addend
= addend
;
14540 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14543 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14544 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14545 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14546 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14547 else if (indx
!= 0)
14548 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14552 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14554 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14556 /* Write the .got section contents for the sake
14558 loc
= got
->contents
+ off
;
14559 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14563 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14565 outrel
.r_addend
+= relocation
;
14566 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14568 if (htab
->elf
.tls_sec
== NULL
)
14569 outrel
.r_addend
= 0;
14571 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14574 loc
= relgot
->contents
;
14575 loc
+= (relgot
->reloc_count
++
14576 * sizeof (Elf64_External_Rela
));
14577 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14580 /* Init the .got section contents here if we're not
14581 emitting a reloc. */
14584 relocation
+= addend
;
14587 if (htab
->elf
.tls_sec
== NULL
)
14591 if (tls_type
& TLS_LD
)
14594 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14595 if (tls_type
& TLS_TPREL
)
14596 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14599 if (tls_type
& (TLS_GD
| TLS_LD
))
14601 bfd_put_64 (output_bfd
, relocation
,
14602 got
->contents
+ off
+ 8);
14606 bfd_put_64 (output_bfd
, relocation
,
14607 got
->contents
+ off
);
14611 if (off
>= (bfd_vma
) -2)
14614 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14615 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14619 case R_PPC64_PLT16_HA
:
14620 case R_PPC64_PLT16_HI
:
14621 case R_PPC64_PLT16_LO
:
14622 case R_PPC64_PLT32
:
14623 case R_PPC64_PLT64
:
14624 /* Relocation is to the entry for this symbol in the
14625 procedure linkage table. */
14627 struct plt_entry
**plt_list
= NULL
;
14629 plt_list
= &h
->elf
.plt
.plist
;
14630 else if (local_got_ents
!= NULL
)
14632 struct plt_entry
**local_plt
= (struct plt_entry
**)
14633 (local_got_ents
+ symtab_hdr
->sh_info
);
14634 unsigned char *local_got_tls_masks
= (unsigned char *)
14635 (local_plt
+ symtab_hdr
->sh_info
);
14636 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14637 plt_list
= local_plt
+ r_symndx
;
14641 struct plt_entry
*ent
;
14643 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14644 if (ent
->plt
.offset
!= (bfd_vma
) -1
14645 && ent
->addend
== orig_rel
.r_addend
)
14649 plt
= htab
->elf
.splt
;
14650 if (!htab
->elf
.dynamic_sections_created
14652 || h
->elf
.dynindx
== -1)
14653 plt
= htab
->elf
.iplt
;
14654 relocation
= (plt
->output_section
->vma
14655 + plt
->output_offset
14656 + ent
->plt
.offset
);
14658 unresolved_reloc
= FALSE
;
14666 /* Relocation value is TOC base. */
14667 relocation
= TOCstart
;
14668 if (r_symndx
== STN_UNDEF
)
14669 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14670 else if (unresolved_reloc
)
14672 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14673 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14675 unresolved_reloc
= TRUE
;
14678 /* TOC16 relocs. We want the offset relative to the TOC base,
14679 which is the address of the start of the TOC plus 0x8000.
14680 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14682 case R_PPC64_TOC16
:
14683 case R_PPC64_TOC16_LO
:
14684 case R_PPC64_TOC16_HI
:
14685 case R_PPC64_TOC16_DS
:
14686 case R_PPC64_TOC16_LO_DS
:
14687 case R_PPC64_TOC16_HA
:
14688 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14691 /* Relocate against the beginning of the section. */
14692 case R_PPC64_SECTOFF
:
14693 case R_PPC64_SECTOFF_LO
:
14694 case R_PPC64_SECTOFF_HI
:
14695 case R_PPC64_SECTOFF_DS
:
14696 case R_PPC64_SECTOFF_LO_DS
:
14697 case R_PPC64_SECTOFF_HA
:
14699 addend
-= sec
->output_section
->vma
;
14702 case R_PPC64_REL16
:
14703 case R_PPC64_REL16_LO
:
14704 case R_PPC64_REL16_HI
:
14705 case R_PPC64_REL16_HA
:
14706 case R_PPC64_REL16DX_HA
:
14709 case R_PPC64_REL14
:
14710 case R_PPC64_REL14_BRNTAKEN
:
14711 case R_PPC64_REL14_BRTAKEN
:
14712 case R_PPC64_REL24
:
14715 case R_PPC64_TPREL16
:
14716 case R_PPC64_TPREL16_LO
:
14717 case R_PPC64_TPREL16_HI
:
14718 case R_PPC64_TPREL16_HA
:
14719 case R_PPC64_TPREL16_DS
:
14720 case R_PPC64_TPREL16_LO_DS
:
14721 case R_PPC64_TPREL16_HIGH
:
14722 case R_PPC64_TPREL16_HIGHA
:
14723 case R_PPC64_TPREL16_HIGHER
:
14724 case R_PPC64_TPREL16_HIGHERA
:
14725 case R_PPC64_TPREL16_HIGHEST
:
14726 case R_PPC64_TPREL16_HIGHESTA
:
14728 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14729 && h
->elf
.dynindx
== -1)
14731 /* Make this relocation against an undefined weak symbol
14732 resolve to zero. This is really just a tweak, since
14733 code using weak externs ought to check that they are
14734 defined before using them. */
14735 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14737 insn
= bfd_get_32 (input_bfd
, p
);
14738 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14740 bfd_put_32 (input_bfd
, insn
, p
);
14743 if (htab
->elf
.tls_sec
!= NULL
)
14744 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14745 /* The TPREL16 relocs shouldn't really be used in shared
14746 libs or with non-local symbols as that will result in
14747 DT_TEXTREL being set, but support them anyway. */
14750 case R_PPC64_DTPREL16
:
14751 case R_PPC64_DTPREL16_LO
:
14752 case R_PPC64_DTPREL16_HI
:
14753 case R_PPC64_DTPREL16_HA
:
14754 case R_PPC64_DTPREL16_DS
:
14755 case R_PPC64_DTPREL16_LO_DS
:
14756 case R_PPC64_DTPREL16_HIGH
:
14757 case R_PPC64_DTPREL16_HIGHA
:
14758 case R_PPC64_DTPREL16_HIGHER
:
14759 case R_PPC64_DTPREL16_HIGHERA
:
14760 case R_PPC64_DTPREL16_HIGHEST
:
14761 case R_PPC64_DTPREL16_HIGHESTA
:
14762 if (htab
->elf
.tls_sec
!= NULL
)
14763 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14766 case R_PPC64_ADDR64_LOCAL
:
14767 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14772 case R_PPC64_DTPMOD64
:
14777 case R_PPC64_TPREL64
:
14778 if (htab
->elf
.tls_sec
!= NULL
)
14779 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14782 case R_PPC64_DTPREL64
:
14783 if (htab
->elf
.tls_sec
!= NULL
)
14784 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14785 /* Fall through. */
14787 /* Relocations that may need to be propagated if this is a
14789 case R_PPC64_REL30
:
14790 case R_PPC64_REL32
:
14791 case R_PPC64_REL64
:
14792 case R_PPC64_ADDR14
:
14793 case R_PPC64_ADDR14_BRNTAKEN
:
14794 case R_PPC64_ADDR14_BRTAKEN
:
14795 case R_PPC64_ADDR16
:
14796 case R_PPC64_ADDR16_DS
:
14797 case R_PPC64_ADDR16_HA
:
14798 case R_PPC64_ADDR16_HI
:
14799 case R_PPC64_ADDR16_HIGH
:
14800 case R_PPC64_ADDR16_HIGHA
:
14801 case R_PPC64_ADDR16_HIGHER
:
14802 case R_PPC64_ADDR16_HIGHERA
:
14803 case R_PPC64_ADDR16_HIGHEST
:
14804 case R_PPC64_ADDR16_HIGHESTA
:
14805 case R_PPC64_ADDR16_LO
:
14806 case R_PPC64_ADDR16_LO_DS
:
14807 case R_PPC64_ADDR24
:
14808 case R_PPC64_ADDR32
:
14809 case R_PPC64_ADDR64
:
14810 case R_PPC64_UADDR16
:
14811 case R_PPC64_UADDR32
:
14812 case R_PPC64_UADDR64
:
14814 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14817 if (NO_OPD_RELOCS
&& is_opd
)
14820 if (bfd_link_pic (info
)
14822 || h
->dyn_relocs
!= NULL
)
14823 && ((h
!= NULL
&& pc_dynrelocs (h
))
14824 || must_be_dyn_reloc (info
, r_type
)))
14826 ? h
->dyn_relocs
!= NULL
14827 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14829 bfd_boolean skip
, relocate
;
14834 /* When generating a dynamic object, these relocations
14835 are copied into the output file to be resolved at run
14841 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14842 input_section
, rel
->r_offset
);
14843 if (out_off
== (bfd_vma
) -1)
14845 else if (out_off
== (bfd_vma
) -2)
14846 skip
= TRUE
, relocate
= TRUE
;
14847 out_off
+= (input_section
->output_section
->vma
14848 + input_section
->output_offset
);
14849 outrel
.r_offset
= out_off
;
14850 outrel
.r_addend
= rel
->r_addend
;
14852 /* Optimize unaligned reloc use. */
14853 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14854 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14855 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14856 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14857 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14858 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14859 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14860 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14861 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14864 memset (&outrel
, 0, sizeof outrel
);
14865 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14867 && r_type
!= R_PPC64_TOC
)
14869 indx
= h
->elf
.dynindx
;
14870 BFD_ASSERT (indx
!= -1);
14871 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14875 /* This symbol is local, or marked to become local,
14876 or this is an opd section reloc which must point
14877 at a local function. */
14878 outrel
.r_addend
+= relocation
;
14879 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14881 if (is_opd
&& h
!= NULL
)
14883 /* Lie about opd entries. This case occurs
14884 when building shared libraries and we
14885 reference a function in another shared
14886 lib. The same thing happens for a weak
14887 definition in an application that's
14888 overridden by a strong definition in a
14889 shared lib. (I believe this is a generic
14890 bug in binutils handling of weak syms.)
14891 In these cases we won't use the opd
14892 entry in this lib. */
14893 unresolved_reloc
= FALSE
;
14896 && r_type
== R_PPC64_ADDR64
14898 ? h
->elf
.type
== STT_GNU_IFUNC
14899 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14900 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14903 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14905 /* We need to relocate .opd contents for ld.so.
14906 Prelink also wants simple and consistent rules
14907 for relocs. This make all RELATIVE relocs have
14908 *r_offset equal to r_addend. */
14915 ? h
->elf
.type
== STT_GNU_IFUNC
14916 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14918 info
->callbacks
->einfo
14919 /* xgettext:c-format */
14920 (_("%H: %s for indirect "
14921 "function `%pT' unsupported\n"),
14922 input_bfd
, input_section
, rel
->r_offset
,
14923 ppc64_elf_howto_table
[r_type
]->name
,
14927 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14929 else if (sec
== NULL
|| sec
->owner
== NULL
)
14931 bfd_set_error (bfd_error_bad_value
);
14938 osec
= sec
->output_section
;
14939 indx
= elf_section_data (osec
)->dynindx
;
14943 if ((osec
->flags
& SEC_READONLY
) == 0
14944 && htab
->elf
.data_index_section
!= NULL
)
14945 osec
= htab
->elf
.data_index_section
;
14947 osec
= htab
->elf
.text_index_section
;
14948 indx
= elf_section_data (osec
)->dynindx
;
14950 BFD_ASSERT (indx
!= 0);
14952 /* We are turning this relocation into one
14953 against a section symbol, so subtract out
14954 the output section's address but not the
14955 offset of the input section in the output
14957 outrel
.r_addend
-= osec
->vma
;
14960 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14964 sreloc
= elf_section_data (input_section
)->sreloc
;
14966 ? h
->elf
.type
== STT_GNU_IFUNC
14967 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14969 sreloc
= htab
->elf
.irelplt
;
14971 htab
->local_ifunc_resolver
= 1;
14972 else if (is_static_defined (&h
->elf
))
14973 htab
->maybe_local_ifunc_resolver
= 1;
14975 if (sreloc
== NULL
)
14978 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14981 loc
= sreloc
->contents
;
14982 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14983 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14985 /* If this reloc is against an external symbol, it will
14986 be computed at runtime, so there's no need to do
14987 anything now. However, for the sake of prelink ensure
14988 that the section contents are a known value. */
14991 unresolved_reloc
= FALSE
;
14992 /* The value chosen here is quite arbitrary as ld.so
14993 ignores section contents except for the special
14994 case of .opd where the contents might be accessed
14995 before relocation. Choose zero, as that won't
14996 cause reloc overflow. */
14999 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15000 to improve backward compatibility with older
15002 if (r_type
== R_PPC64_ADDR64
)
15003 addend
= outrel
.r_addend
;
15004 /* Adjust pc_relative relocs to have zero in *r_offset. */
15005 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15006 addend
= outrel
.r_offset
;
15012 case R_PPC64_GLOB_DAT
:
15013 case R_PPC64_JMP_SLOT
:
15014 case R_PPC64_JMP_IREL
:
15015 case R_PPC64_RELATIVE
:
15016 /* We shouldn't ever see these dynamic relocs in relocatable
15018 /* Fall through. */
15020 case R_PPC64_PLTGOT16
:
15021 case R_PPC64_PLTGOT16_DS
:
15022 case R_PPC64_PLTGOT16_HA
:
15023 case R_PPC64_PLTGOT16_HI
:
15024 case R_PPC64_PLTGOT16_LO
:
15025 case R_PPC64_PLTGOT16_LO_DS
:
15026 case R_PPC64_PLTREL32
:
15027 case R_PPC64_PLTREL64
:
15028 /* These ones haven't been implemented yet. */
15030 info
->callbacks
->einfo
15031 /* xgettext:c-format */
15032 (_("%P: %pB: %s is not supported for `%pT'\n"),
15034 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15036 bfd_set_error (bfd_error_invalid_operation
);
15041 /* Multi-instruction sequences that access the TOC can be
15042 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15043 to nop; addi rb,r2,x; */
15049 case R_PPC64_GOT_TLSLD16_HI
:
15050 case R_PPC64_GOT_TLSGD16_HI
:
15051 case R_PPC64_GOT_TPREL16_HI
:
15052 case R_PPC64_GOT_DTPREL16_HI
:
15053 case R_PPC64_GOT16_HI
:
15054 case R_PPC64_TOC16_HI
:
15055 /* These relocs would only be useful if building up an
15056 offset to later add to r2, perhaps in an indexed
15057 addressing mode instruction. Don't try to optimize.
15058 Unfortunately, the possibility of someone building up an
15059 offset like this or even with the HA relocs, means that
15060 we need to check the high insn when optimizing the low
15064 case R_PPC64_GOT_TLSLD16_HA
:
15065 case R_PPC64_GOT_TLSGD16_HA
:
15066 case R_PPC64_GOT_TPREL16_HA
:
15067 case R_PPC64_GOT_DTPREL16_HA
:
15068 case R_PPC64_GOT16_HA
:
15069 case R_PPC64_TOC16_HA
:
15070 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15071 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15073 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15074 bfd_put_32 (input_bfd
, NOP
, p
);
15079 case R_PPC64_GOT_TLSLD16_LO
:
15080 case R_PPC64_GOT_TLSGD16_LO
:
15081 case R_PPC64_GOT_TPREL16_LO_DS
:
15082 case R_PPC64_GOT_DTPREL16_LO_DS
:
15083 case R_PPC64_GOT16_LO
:
15084 case R_PPC64_GOT16_LO_DS
:
15085 case R_PPC64_TOC16_LO
:
15086 case R_PPC64_TOC16_LO_DS
:
15087 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15088 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15090 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15091 insn
= bfd_get_32 (input_bfd
, p
);
15092 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15094 /* Transform addic to addi when we change reg. */
15095 insn
&= ~((0x3f << 26) | (0x1f << 16));
15096 insn
|= (14u << 26) | (2 << 16);
15100 insn
&= ~(0x1f << 16);
15103 bfd_put_32 (input_bfd
, insn
, p
);
15107 case R_PPC64_TPREL16_HA
:
15108 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15110 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15111 insn
= bfd_get_32 (input_bfd
, p
);
15112 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15113 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15114 /* xgettext:c-format */
15115 info
->callbacks
->minfo
15116 (_("%H: warning: %s unexpected insn %#x.\n"),
15117 input_bfd
, input_section
, rel
->r_offset
,
15118 ppc64_elf_howto_table
[r_type
]->name
, insn
);
15121 bfd_put_32 (input_bfd
, NOP
, p
);
15127 case R_PPC64_TPREL16_LO
:
15128 case R_PPC64_TPREL16_LO_DS
:
15129 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15131 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15132 insn
= bfd_get_32 (input_bfd
, p
);
15133 insn
&= ~(0x1f << 16);
15135 bfd_put_32 (input_bfd
, insn
, p
);
15140 /* Do any further special processing. */
15146 case R_PPC64_REL16_HA
:
15147 case R_PPC64_REL16DX_HA
:
15148 case R_PPC64_ADDR16_HA
:
15149 case R_PPC64_ADDR16_HIGHA
:
15150 case R_PPC64_ADDR16_HIGHERA
:
15151 case R_PPC64_ADDR16_HIGHESTA
:
15152 case R_PPC64_TOC16_HA
:
15153 case R_PPC64_SECTOFF_HA
:
15154 case R_PPC64_TPREL16_HA
:
15155 case R_PPC64_TPREL16_HIGHA
:
15156 case R_PPC64_TPREL16_HIGHERA
:
15157 case R_PPC64_TPREL16_HIGHESTA
:
15158 case R_PPC64_DTPREL16_HA
:
15159 case R_PPC64_DTPREL16_HIGHA
:
15160 case R_PPC64_DTPREL16_HIGHERA
:
15161 case R_PPC64_DTPREL16_HIGHESTA
:
15162 /* It's just possible that this symbol is a weak symbol
15163 that's not actually defined anywhere. In that case,
15164 'sec' would be NULL, and we should leave the symbol
15165 alone (it will be set to zero elsewhere in the link). */
15168 /* Fall through. */
15170 case R_PPC64_GOT16_HA
:
15171 case R_PPC64_PLTGOT16_HA
:
15172 case R_PPC64_PLT16_HA
:
15173 case R_PPC64_GOT_TLSGD16_HA
:
15174 case R_PPC64_GOT_TLSLD16_HA
:
15175 case R_PPC64_GOT_TPREL16_HA
:
15176 case R_PPC64_GOT_DTPREL16_HA
:
15177 /* Add 0x10000 if sign bit in 0:15 is set.
15178 Bits 0:15 are not used. */
15182 case R_PPC64_ADDR16_DS
:
15183 case R_PPC64_ADDR16_LO_DS
:
15184 case R_PPC64_GOT16_DS
:
15185 case R_PPC64_GOT16_LO_DS
:
15186 case R_PPC64_PLT16_LO_DS
:
15187 case R_PPC64_SECTOFF_DS
:
15188 case R_PPC64_SECTOFF_LO_DS
:
15189 case R_PPC64_TOC16_DS
:
15190 case R_PPC64_TOC16_LO_DS
:
15191 case R_PPC64_PLTGOT16_DS
:
15192 case R_PPC64_PLTGOT16_LO_DS
:
15193 case R_PPC64_GOT_TPREL16_DS
:
15194 case R_PPC64_GOT_TPREL16_LO_DS
:
15195 case R_PPC64_GOT_DTPREL16_DS
:
15196 case R_PPC64_GOT_DTPREL16_LO_DS
:
15197 case R_PPC64_TPREL16_DS
:
15198 case R_PPC64_TPREL16_LO_DS
:
15199 case R_PPC64_DTPREL16_DS
:
15200 case R_PPC64_DTPREL16_LO_DS
:
15201 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15203 /* If this reloc is against an lq, lxv, or stxv insn, then
15204 the value must be a multiple of 16. This is somewhat of
15205 a hack, but the "correct" way to do this by defining _DQ
15206 forms of all the _DS relocs bloats all reloc switches in
15207 this file. It doesn't make much sense to use these
15208 relocs in data, so testing the insn should be safe. */
15209 if ((insn
& (0x3f << 26)) == (56u << 26)
15210 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15212 relocation
+= addend
;
15213 addend
= insn
& (mask
^ 3);
15214 if ((relocation
& mask
) != 0)
15216 relocation
^= relocation
& mask
;
15217 info
->callbacks
->einfo
15218 /* xgettext:c-format */
15219 (_("%H: error: %s not a multiple of %u\n"),
15220 input_bfd
, input_section
, rel
->r_offset
,
15221 ppc64_elf_howto_table
[r_type
]->name
,
15223 bfd_set_error (bfd_error_bad_value
);
15230 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15231 because such sections are not SEC_ALLOC and thus ld.so will
15232 not process them. */
15233 howto
= ppc64_elf_howto_table
[(int) r_type
];
15234 if (unresolved_reloc
15235 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15236 && h
->elf
.def_dynamic
)
15237 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15238 rel
->r_offset
) != (bfd_vma
) -1)
15240 info
->callbacks
->einfo
15241 /* xgettext:c-format */
15242 (_("%H: unresolvable %s against `%pT'\n"),
15243 input_bfd
, input_section
, rel
->r_offset
,
15245 h
->elf
.root
.root
.string
);
15249 /* 16-bit fields in insns mostly have signed values, but a
15250 few insns have 16-bit unsigned values. Really, we should
15251 have different reloc types. */
15252 if (howto
->complain_on_overflow
!= complain_overflow_dont
15253 && howto
->dst_mask
== 0xffff
15254 && (input_section
->flags
& SEC_CODE
) != 0)
15256 enum complain_overflow complain
= complain_overflow_signed
;
15258 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15259 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15260 complain
= complain_overflow_bitfield
;
15261 else if (howto
->rightshift
== 0
15262 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15263 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15264 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15265 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15266 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15267 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15268 complain
= complain_overflow_unsigned
;
15269 if (howto
->complain_on_overflow
!= complain
)
15271 alt_howto
= *howto
;
15272 alt_howto
.complain_on_overflow
= complain
;
15273 howto
= &alt_howto
;
15277 if (r_type
== R_PPC64_REL16DX_HA
)
15279 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15280 if (rel
->r_offset
+ 4 > input_section
->size
)
15281 r
= bfd_reloc_outofrange
;
15284 relocation
+= addend
;
15285 relocation
-= (rel
->r_offset
15286 + input_section
->output_offset
15287 + input_section
->output_section
->vma
);
15288 relocation
= (bfd_signed_vma
) relocation
>> 16;
15289 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15291 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15292 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15294 if (relocation
+ 0x8000 > 0xffff)
15295 r
= bfd_reloc_overflow
;
15299 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15300 rel
->r_offset
, relocation
, addend
);
15302 if (r
!= bfd_reloc_ok
)
15304 char *more_info
= NULL
;
15305 const char *reloc_name
= howto
->name
;
15307 if (reloc_dest
!= DEST_NORMAL
)
15309 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15310 if (more_info
!= NULL
)
15312 strcpy (more_info
, reloc_name
);
15313 strcat (more_info
, (reloc_dest
== DEST_OPD
15314 ? " (OPD)" : " (stub)"));
15315 reloc_name
= more_info
;
15319 if (r
== bfd_reloc_overflow
)
15321 /* On code like "if (foo) foo();" don't report overflow
15322 on a branch to zero when foo is undefined. */
15324 && (reloc_dest
== DEST_STUB
15326 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15327 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15328 && is_branch_reloc (r_type
))))
15329 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15330 sym_name
, reloc_name
,
15332 input_bfd
, input_section
,
15337 info
->callbacks
->einfo
15338 /* xgettext:c-format */
15339 (_("%H: %s against `%pT': error %d\n"),
15340 input_bfd
, input_section
, rel
->r_offset
,
15341 reloc_name
, sym_name
, (int) r
);
15344 if (more_info
!= NULL
)
15354 Elf_Internal_Shdr
*rel_hdr
;
15355 size_t deleted
= rel
- wrel
;
15357 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15358 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15359 if (rel_hdr
->sh_size
== 0)
15361 /* It is too late to remove an empty reloc section. Leave
15363 ??? What is wrong with an empty section??? */
15364 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15367 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15368 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15369 input_section
->reloc_count
-= deleted
;
15372 /* If we're emitting relocations, then shortly after this function
15373 returns, reloc offsets and addends for this section will be
15374 adjusted. Worse, reloc symbol indices will be for the output
15375 file rather than the input. Save a copy of the relocs for
15376 opd_entry_value. */
15377 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15380 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15381 rel
= bfd_alloc (input_bfd
, amt
);
15382 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15383 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15386 memcpy (rel
, relocs
, amt
);
15391 /* Adjust the value of any local symbols in opd sections. */
15394 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15395 const char *name ATTRIBUTE_UNUSED
,
15396 Elf_Internal_Sym
*elfsym
,
15397 asection
*input_sec
,
15398 struct elf_link_hash_entry
*h
)
15400 struct _opd_sec_data
*opd
;
15407 opd
= get_opd_info (input_sec
);
15408 if (opd
== NULL
|| opd
->adjust
== NULL
)
15411 value
= elfsym
->st_value
- input_sec
->output_offset
;
15412 if (!bfd_link_relocatable (info
))
15413 value
-= input_sec
->output_section
->vma
;
15415 adjust
= opd
->adjust
[OPD_NDX (value
)];
15419 elfsym
->st_value
+= adjust
;
15423 /* Finish up dynamic symbol handling. We set the contents of various
15424 dynamic sections here. */
15427 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15428 struct bfd_link_info
*info
,
15429 struct elf_link_hash_entry
*h
,
15430 Elf_Internal_Sym
*sym
)
15432 struct ppc_link_hash_table
*htab
;
15433 struct plt_entry
*ent
;
15434 Elf_Internal_Rela rela
;
15437 htab
= ppc_hash_table (info
);
15441 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15442 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15444 /* This symbol has an entry in the procedure linkage
15445 table. Set it up. */
15446 if (!htab
->elf
.dynamic_sections_created
15447 || h
->dynindx
== -1)
15449 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15451 && (h
->root
.type
== bfd_link_hash_defined
15452 || h
->root
.type
== bfd_link_hash_defweak
));
15453 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15454 + htab
->elf
.iplt
->output_offset
15455 + ent
->plt
.offset
);
15457 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15459 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15460 rela
.r_addend
= (h
->root
.u
.def
.value
15461 + h
->root
.u
.def
.section
->output_offset
15462 + h
->root
.u
.def
.section
->output_section
->vma
15464 loc
= (htab
->elf
.irelplt
->contents
15465 + (htab
->elf
.irelplt
->reloc_count
++
15466 * sizeof (Elf64_External_Rela
)));
15467 htab
->local_ifunc_resolver
= 1;
15471 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15472 + htab
->elf
.splt
->output_offset
15473 + ent
->plt
.offset
);
15474 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15475 rela
.r_addend
= ent
->addend
;
15476 loc
= (htab
->elf
.srelplt
->contents
15477 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15478 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15479 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15480 htab
->maybe_local_ifunc_resolver
= 1;
15482 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15484 if (!htab
->opd_abi
)
15486 if (!h
->def_regular
)
15488 /* Mark the symbol as undefined, rather than as
15489 defined in glink. Leave the value if there were
15490 any relocations where pointer equality matters
15491 (this is a clue for the dynamic linker, to make
15492 function pointer comparisons work between an
15493 application and shared library), otherwise set it
15495 sym
->st_shndx
= SHN_UNDEF
;
15496 if (!h
->pointer_equality_needed
)
15498 else if (!h
->ref_regular_nonweak
)
15500 /* This breaks function pointer comparisons, but
15501 that is better than breaking tests for a NULL
15502 function pointer. */
15511 /* This symbol needs a copy reloc. Set it up. */
15514 if (h
->dynindx
== -1
15515 || (h
->root
.type
!= bfd_link_hash_defined
15516 && h
->root
.type
!= bfd_link_hash_defweak
)
15517 || htab
->elf
.srelbss
== NULL
15518 || htab
->elf
.sreldynrelro
== NULL
)
15521 rela
.r_offset
= (h
->root
.u
.def
.value
15522 + h
->root
.u
.def
.section
->output_section
->vma
15523 + h
->root
.u
.def
.section
->output_offset
);
15524 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15526 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15527 srel
= htab
->elf
.sreldynrelro
;
15529 srel
= htab
->elf
.srelbss
;
15530 loc
= srel
->contents
;
15531 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15532 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15538 /* Used to decide how to sort relocs in an optimal manner for the
15539 dynamic linker, before writing them out. */
15541 static enum elf_reloc_type_class
15542 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15543 const asection
*rel_sec
,
15544 const Elf_Internal_Rela
*rela
)
15546 enum elf_ppc64_reloc_type r_type
;
15547 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15549 if (rel_sec
== htab
->elf
.irelplt
)
15550 return reloc_class_ifunc
;
15552 r_type
= ELF64_R_TYPE (rela
->r_info
);
15555 case R_PPC64_RELATIVE
:
15556 return reloc_class_relative
;
15557 case R_PPC64_JMP_SLOT
:
15558 return reloc_class_plt
;
15560 return reloc_class_copy
;
15562 return reloc_class_normal
;
15566 /* Finish up the dynamic sections. */
15569 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15570 struct bfd_link_info
*info
)
15572 struct ppc_link_hash_table
*htab
;
15576 htab
= ppc_hash_table (info
);
15580 dynobj
= htab
->elf
.dynobj
;
15581 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15583 if (htab
->elf
.dynamic_sections_created
)
15585 Elf64_External_Dyn
*dyncon
, *dynconend
;
15587 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15590 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15591 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15592 for (; dyncon
< dynconend
; dyncon
++)
15594 Elf_Internal_Dyn dyn
;
15597 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15604 case DT_PPC64_GLINK
:
15606 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15607 /* We stupidly defined DT_PPC64_GLINK to be the start
15608 of glink rather than the first entry point, which is
15609 what ld.so needs, and now have a bigger stub to
15610 support automatic multiple TOCs. */
15611 dyn
.d_un
.d_ptr
+= GLINK_PLTRESOLVE_SIZE (htab
) - 8 * 4;
15615 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15618 dyn
.d_un
.d_ptr
= s
->vma
;
15622 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15623 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15624 if (htab
->has_plt_localentry0
)
15625 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15628 case DT_PPC64_OPDSZ
:
15629 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15632 dyn
.d_un
.d_val
= s
->size
;
15636 s
= htab
->elf
.splt
;
15637 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15641 s
= htab
->elf
.srelplt
;
15642 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15646 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15650 if (htab
->local_ifunc_resolver
)
15651 info
->callbacks
->einfo
15652 (_("%X%P: text relocations and GNU indirect "
15653 "functions will result in a segfault at runtime\n"));
15654 else if (htab
->maybe_local_ifunc_resolver
)
15655 info
->callbacks
->einfo
15656 (_("%P: warning: text relocations and GNU indirect "
15657 "functions may result in a segfault at runtime\n"));
15661 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15665 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15666 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15668 /* Fill in the first entry in the global offset table.
15669 We use it to hold the link-time TOCbase. */
15670 bfd_put_64 (output_bfd
,
15671 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15672 htab
->elf
.sgot
->contents
);
15674 /* Set .got entry size. */
15675 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15678 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15679 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15681 /* Set .plt entry size. */
15682 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15683 = PLT_ENTRY_SIZE (htab
);
15686 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15687 brlt ourselves if emitrelocations. */
15688 if (htab
->brlt
!= NULL
15689 && htab
->brlt
->reloc_count
!= 0
15690 && !_bfd_elf_link_output_relocs (output_bfd
,
15692 elf_section_data (htab
->brlt
)->rela
.hdr
,
15693 elf_section_data (htab
->brlt
)->relocs
,
15697 if (htab
->glink
!= NULL
15698 && htab
->glink
->reloc_count
!= 0
15699 && !_bfd_elf_link_output_relocs (output_bfd
,
15701 elf_section_data (htab
->glink
)->rela
.hdr
,
15702 elf_section_data (htab
->glink
)->relocs
,
15706 if (htab
->glink_eh_frame
!= NULL
15707 && htab
->glink_eh_frame
->size
!= 0)
15711 struct map_stub
*group
;
15714 p
= htab
->glink_eh_frame
->contents
;
15715 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15717 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15718 if (group
->stub_sec
!= NULL
)
15720 /* Offset to stub section. */
15721 val
= (group
->stub_sec
->output_section
->vma
15722 + group
->stub_sec
->output_offset
);
15723 val
-= (htab
->glink_eh_frame
->output_section
->vma
15724 + htab
->glink_eh_frame
->output_offset
15725 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15726 if (val
+ 0x80000000 > 0xffffffff)
15729 (_("%s offset too large for .eh_frame sdata4 encoding"),
15730 group
->stub_sec
->name
);
15733 bfd_put_32 (dynobj
, val
, p
+ 8);
15734 p
+= stub_eh_frame_size (group
, align
);
15736 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15738 /* Offset to .glink. */
15739 val
= (htab
->glink
->output_section
->vma
15740 + htab
->glink
->output_offset
15742 val
-= (htab
->glink_eh_frame
->output_section
->vma
15743 + htab
->glink_eh_frame
->output_offset
15744 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15745 if (val
+ 0x80000000 > 0xffffffff)
15748 (_("%s offset too large for .eh_frame sdata4 encoding"),
15749 htab
->glink
->name
);
15752 bfd_put_32 (dynobj
, val
, p
+ 8);
15753 p
+= (24 + align
- 1) & -align
;
15756 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15757 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15758 htab
->glink_eh_frame
,
15759 htab
->glink_eh_frame
->contents
))
15763 /* We need to handle writing out multiple GOT sections ourselves,
15764 since we didn't add them to DYNOBJ. We know dynobj is the first
15766 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15770 if (!is_ppc64_elf (dynobj
))
15773 s
= ppc64_elf_tdata (dynobj
)->got
;
15776 && s
->output_section
!= bfd_abs_section_ptr
15777 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15778 s
->contents
, s
->output_offset
,
15781 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15784 && s
->output_section
!= bfd_abs_section_ptr
15785 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15786 s
->contents
, s
->output_offset
,
15794 #include "elf64-target.h"
15796 /* FreeBSD support */
15798 #undef TARGET_LITTLE_SYM
15799 #undef TARGET_LITTLE_NAME
15801 #undef TARGET_BIG_SYM
15802 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15803 #undef TARGET_BIG_NAME
15804 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15807 #define ELF_OSABI ELFOSABI_FREEBSD
15810 #define elf64_bed elf64_powerpc_fbsd_bed
15812 #include "elf64-target.h"