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
,
3274 size_t symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3275 asection
*opd
= NULL
;
3276 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3278 int abi
= abiversion (abfd
);
3284 opd
= bfd_get_section_by_name (abfd
, ".opd");
3285 if (opd
== NULL
&& abi
== 1)
3297 symcount
= static_count
;
3299 symcount
+= dyn_count
;
3303 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3307 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3309 /* Use both symbol tables. */
3310 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3311 memcpy (syms
+ static_count
, dyn_syms
,
3312 (dyn_count
+ 1) * sizeof (*syms
));
3314 else if (!relocatable
&& static_count
== 0)
3315 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3317 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3319 /* Trim uninteresting symbols. Interesting symbols are section,
3320 function, and notype symbols. */
3321 for (i
= 0, j
= 0; i
< symcount
; ++i
)
3322 if ((syms
[i
]->flags
& (BSF_FILE
| BSF_OBJECT
| BSF_THREAD_LOCAL
3323 | BSF_RELC
| BSF_SRELC
)) == 0)
3324 syms
[j
++] = syms
[i
];
3327 synthetic_relocatable
= relocatable
;
3328 synthetic_opd
= opd
;
3329 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3331 if (!relocatable
&& symcount
> 1)
3333 /* Trim duplicate syms, since we may have merged the normal and
3334 dynamic symbols. Actually, we only care about syms that have
3335 different values, so trim any with the same value. */
3336 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3337 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3338 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3339 syms
[j
++] = syms
[i
];
3344 /* Note that here and in compare_symbols we can't compare opd and
3345 sym->section directly. With separate debug info files, the
3346 symbols will be extracted from the debug file while abfd passed
3347 to this function is the real binary. */
3348 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3352 for (; i
< symcount
; ++i
)
3353 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3354 | SEC_THREAD_LOCAL
))
3355 != (SEC_CODE
| SEC_ALLOC
))
3356 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3360 for (; i
< symcount
; ++i
)
3361 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3365 for (; i
< symcount
; ++i
)
3366 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3370 for (; i
< symcount
; ++i
)
3371 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3372 != (SEC_CODE
| SEC_ALLOC
))
3380 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3385 if (opdsymend
== secsymend
)
3388 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3389 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3393 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3400 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3404 while (r
< opd
->relocation
+ relcount
3405 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3408 if (r
== opd
->relocation
+ relcount
)
3411 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3414 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3417 sym
= *r
->sym_ptr_ptr
;
3418 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3419 sym
->section
->id
, sym
->value
+ r
->addend
))
3422 size
+= sizeof (asymbol
);
3423 size
+= strlen (syms
[i
]->name
) + 2;
3429 s
= *ret
= bfd_malloc (size
);
3436 names
= (char *) (s
+ count
);
3438 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3442 while (r
< opd
->relocation
+ relcount
3443 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3446 if (r
== opd
->relocation
+ relcount
)
3449 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3452 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3455 sym
= *r
->sym_ptr_ptr
;
3456 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3457 sym
->section
->id
, sym
->value
+ r
->addend
))
3462 s
->flags
|= BSF_SYNTHETIC
;
3463 s
->section
= sym
->section
;
3464 s
->value
= sym
->value
+ r
->addend
;
3467 len
= strlen (syms
[i
]->name
);
3468 memcpy (names
, syms
[i
]->name
, len
+ 1);
3470 /* Have udata.p point back to the original symbol this
3471 synthetic symbol was derived from. */
3472 s
->udata
.p
= syms
[i
];
3479 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3480 bfd_byte
*contents
= NULL
;
3482 size_t plt_count
= 0;
3483 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3484 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3487 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3489 free_contents_and_exit_err
:
3491 free_contents_and_exit
:
3498 for (i
= secsymend
; i
< opdsymend
; ++i
)
3502 /* Ignore bogus symbols. */
3503 if (syms
[i
]->value
> opd
->size
- 8)
3506 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3507 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3510 size
+= sizeof (asymbol
);
3511 size
+= strlen (syms
[i
]->name
) + 2;
3515 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3517 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3519 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3521 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3523 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3524 goto free_contents_and_exit_err
;
3526 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3527 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3530 extdynend
= extdyn
+ dynamic
->size
;
3531 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3533 Elf_Internal_Dyn dyn
;
3534 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3536 if (dyn
.d_tag
== DT_NULL
)
3539 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3541 /* The first glink stub starts at DT_PPC64_GLINK plus 32.
3542 See comment in ppc64_elf_finish_dynamic_sections. */
3543 glink_vma
= dyn
.d_un
.d_val
+ 8 * 4;
3544 /* The .glink section usually does not survive the final
3545 link; search for the section (usually .text) where the
3546 glink stubs now reside. */
3547 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3558 /* Determine __glink trampoline by reading the relative branch
3559 from the first glink stub. */
3561 unsigned int off
= 0;
3563 while (bfd_get_section_contents (abfd
, glink
, buf
,
3564 glink_vma
+ off
- glink
->vma
, 4))
3566 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3568 if ((insn
& ~0x3fffffc) == 0)
3570 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3579 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3581 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3584 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3585 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3586 goto free_contents_and_exit_err
;
3588 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3589 size
+= plt_count
* sizeof (asymbol
);
3591 p
= relplt
->relocation
;
3592 for (i
= 0; i
< plt_count
; i
++, p
++)
3594 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3596 size
+= sizeof ("+0x") - 1 + 16;
3602 goto free_contents_and_exit
;
3603 s
= *ret
= bfd_malloc (size
);
3605 goto free_contents_and_exit_err
;
3607 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3609 for (i
= secsymend
; i
< opdsymend
; ++i
)
3613 if (syms
[i
]->value
> opd
->size
- 8)
3616 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3617 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3621 asection
*sec
= abfd
->sections
;
3628 size_t mid
= (lo
+ hi
) >> 1;
3629 if (syms
[mid
]->section
->vma
< ent
)
3631 else if (syms
[mid
]->section
->vma
> ent
)
3635 sec
= syms
[mid
]->section
;
3640 if (lo
>= hi
&& lo
> codesecsym
)
3641 sec
= syms
[lo
- 1]->section
;
3643 for (; sec
!= NULL
; sec
= sec
->next
)
3647 /* SEC_LOAD may not be set if SEC is from a separate debug
3649 if ((sec
->flags
& SEC_ALLOC
) == 0)
3651 if ((sec
->flags
& SEC_CODE
) != 0)
3654 s
->flags
|= BSF_SYNTHETIC
;
3655 s
->value
= ent
- s
->section
->vma
;
3658 len
= strlen (syms
[i
]->name
);
3659 memcpy (names
, syms
[i
]->name
, len
+ 1);
3661 /* Have udata.p point back to the original symbol this
3662 synthetic symbol was derived from. */
3663 s
->udata
.p
= syms
[i
];
3669 if (glink
!= NULL
&& relplt
!= NULL
)
3673 /* Add a symbol for the main glink trampoline. */
3674 memset (s
, 0, sizeof *s
);
3676 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3678 s
->value
= resolv_vma
- glink
->vma
;
3680 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3681 names
+= sizeof ("__glink_PLTresolve");
3686 /* FIXME: It would be very much nicer to put sym@plt on the
3687 stub rather than on the glink branch table entry. The
3688 objdump disassembler would then use a sensible symbol
3689 name on plt calls. The difficulty in doing so is
3690 a) finding the stubs, and,
3691 b) matching stubs against plt entries, and,
3692 c) there can be multiple stubs for a given plt entry.
3694 Solving (a) could be done by code scanning, but older
3695 ppc64 binaries used different stubs to current code.
3696 (b) is the tricky one since you need to known the toc
3697 pointer for at least one function that uses a pic stub to
3698 be able to calculate the plt address referenced.
3699 (c) means gdb would need to set multiple breakpoints (or
3700 find the glink branch itself) when setting breakpoints
3701 for pending shared library loads. */
3702 p
= relplt
->relocation
;
3703 for (i
= 0; i
< plt_count
; i
++, p
++)
3707 *s
= **p
->sym_ptr_ptr
;
3708 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3709 we are defining a symbol, ensure one of them is set. */
3710 if ((s
->flags
& BSF_LOCAL
) == 0)
3711 s
->flags
|= BSF_GLOBAL
;
3712 s
->flags
|= BSF_SYNTHETIC
;
3714 s
->value
= glink_vma
- glink
->vma
;
3717 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3718 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3722 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3723 names
+= sizeof ("+0x") - 1;
3724 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3725 names
+= strlen (names
);
3727 memcpy (names
, "@plt", sizeof ("@plt"));
3728 names
+= sizeof ("@plt");
3748 /* The following functions are specific to the ELF linker, while
3749 functions above are used generally. Those named ppc64_elf_* are
3750 called by the main ELF linker code. They appear in this file more
3751 or less in the order in which they are called. eg.
3752 ppc64_elf_check_relocs is called early in the link process,
3753 ppc64_elf_finish_dynamic_sections is one of the last functions
3756 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3757 functions have both a function code symbol and a function descriptor
3758 symbol. A call to foo in a relocatable object file looks like:
3765 The function definition in another object file might be:
3769 . .quad .TOC.@tocbase
3775 When the linker resolves the call during a static link, the branch
3776 unsurprisingly just goes to .foo and the .opd information is unused.
3777 If the function definition is in a shared library, things are a little
3778 different: The call goes via a plt call stub, the opd information gets
3779 copied to the plt, and the linker patches the nop.
3787 . std 2,40(1) # in practice, the call stub
3788 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3789 . addi 11,11,Lfoo@toc@l # this is the general idea
3797 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3799 The "reloc ()" notation is supposed to indicate that the linker emits
3800 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3803 What are the difficulties here? Well, firstly, the relocations
3804 examined by the linker in check_relocs are against the function code
3805 sym .foo, while the dynamic relocation in the plt is emitted against
3806 the function descriptor symbol, foo. Somewhere along the line, we need
3807 to carefully copy dynamic link information from one symbol to the other.
3808 Secondly, the generic part of the elf linker will make .foo a dynamic
3809 symbol as is normal for most other backends. We need foo dynamic
3810 instead, at least for an application final link. However, when
3811 creating a shared library containing foo, we need to have both symbols
3812 dynamic so that references to .foo are satisfied during the early
3813 stages of linking. Otherwise the linker might decide to pull in a
3814 definition from some other object, eg. a static library.
3816 Update: As of August 2004, we support a new convention. Function
3817 calls may use the function descriptor symbol, ie. "bl foo". This
3818 behaves exactly as "bl .foo". */
3820 /* Of those relocs that might be copied as dynamic relocs, this
3821 function selects those that must be copied when linking a shared
3822 library or PIE, even when the symbol is local. */
3825 must_be_dyn_reloc (struct bfd_link_info
*info
,
3826 enum elf_ppc64_reloc_type r_type
)
3831 /* Only relative relocs can be resolved when the object load
3832 address isn't fixed. DTPREL64 is excluded because the
3833 dynamic linker needs to differentiate global dynamic from
3834 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3842 case R_PPC64_TPREL16
:
3843 case R_PPC64_TPREL16_LO
:
3844 case R_PPC64_TPREL16_HI
:
3845 case R_PPC64_TPREL16_HA
:
3846 case R_PPC64_TPREL16_DS
:
3847 case R_PPC64_TPREL16_LO_DS
:
3848 case R_PPC64_TPREL16_HIGH
:
3849 case R_PPC64_TPREL16_HIGHA
:
3850 case R_PPC64_TPREL16_HIGHER
:
3851 case R_PPC64_TPREL16_HIGHERA
:
3852 case R_PPC64_TPREL16_HIGHEST
:
3853 case R_PPC64_TPREL16_HIGHESTA
:
3854 case R_PPC64_TPREL64
:
3855 /* These relocations are relative but in a shared library the
3856 linker doesn't know the thread pointer base. */
3857 return bfd_link_dll (info
);
3861 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3862 copying dynamic variables from a shared lib into an app's dynbss
3863 section, and instead use a dynamic relocation to point into the
3864 shared lib. With code that gcc generates, it's vital that this be
3865 enabled; In the PowerPC64 ABI, the address of a function is actually
3866 the address of a function descriptor, which resides in the .opd
3867 section. gcc uses the descriptor directly rather than going via the
3868 GOT as some other ABI's do, which means that initialized function
3869 pointers must reference the descriptor. Thus, a function pointer
3870 initialized to the address of a function in a shared library will
3871 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3872 redefines the function descriptor symbol to point to the copy. This
3873 presents a problem as a plt entry for that function is also
3874 initialized from the function descriptor symbol and the copy reloc
3875 may not be initialized first. */
3876 #define ELIMINATE_COPY_RELOCS 1
3878 /* Section name for stubs is the associated section name plus this
3880 #define STUB_SUFFIX ".stub"
3883 ppc_stub_long_branch:
3884 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3885 destination, but a 24 bit branch in a stub section will reach.
3888 ppc_stub_plt_branch:
3889 Similar to the above, but a 24 bit branch in the stub section won't
3890 reach its destination.
3891 . addis %r11,%r2,xxx@toc@ha
3892 . ld %r12,xxx@toc@l(%r11)
3897 Used to call a function in a shared library. If it so happens that
3898 the plt entry referenced crosses a 64k boundary, then an extra
3899 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3901 . addis %r11,%r2,xxx@toc@ha
3902 . ld %r12,xxx+0@toc@l(%r11)
3904 . ld %r2,xxx+8@toc@l(%r11)
3905 . ld %r11,xxx+16@toc@l(%r11)
3908 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3909 code to adjust the value and save r2 to support multiple toc sections.
3910 A ppc_stub_long_branch with an r2 offset looks like:
3912 . addis %r2,%r2,off@ha
3913 . addi %r2,%r2,off@l
3916 A ppc_stub_plt_branch with an r2 offset looks like:
3918 . addis %r11,%r2,xxx@toc@ha
3919 . ld %r12,xxx@toc@l(%r11)
3920 . addis %r2,%r2,off@ha
3921 . addi %r2,%r2,off@l
3925 In cases where the "addis" instruction would add zero, the "addis" is
3926 omitted and following instructions modified slightly in some cases.
3929 enum ppc_stub_type
{
3931 ppc_stub_long_branch
,
3932 ppc_stub_long_branch_r2off
,
3933 ppc_stub_plt_branch
,
3934 ppc_stub_plt_branch_r2off
,
3936 ppc_stub_plt_call_r2save
,
3937 ppc_stub_global_entry
,
3941 /* Information on stub grouping. */
3944 /* The stub section. */
3946 /* This is the section to which stubs in the group will be attached. */
3949 struct map_stub
*next
;
3950 /* Whether to emit a copy of register save/restore functions in this
3953 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3954 or -1u if no such stub with bctrl exists. */
3955 unsigned int tls_get_addr_opt_bctrl
;
3958 struct ppc_stub_hash_entry
{
3960 /* Base hash table entry structure. */
3961 struct bfd_hash_entry root
;
3963 enum ppc_stub_type stub_type
;
3965 /* Group information. */
3966 struct map_stub
*group
;
3968 /* Offset within stub_sec of the beginning of this stub. */
3969 bfd_vma stub_offset
;
3971 /* Given the symbol's value and its section we can determine its final
3972 value when building the stubs (so the stub knows where to jump. */
3973 bfd_vma target_value
;
3974 asection
*target_section
;
3976 /* The symbol table entry, if any, that this was derived from. */
3977 struct ppc_link_hash_entry
*h
;
3978 struct plt_entry
*plt_ent
;
3980 /* Symbol st_other. */
3981 unsigned char other
;
3984 struct ppc_branch_hash_entry
{
3986 /* Base hash table entry structure. */
3987 struct bfd_hash_entry root
;
3989 /* Offset within branch lookup table. */
3990 unsigned int offset
;
3992 /* Generation marker. */
3996 /* Used to track dynamic relocations for local symbols. */
3997 struct ppc_dyn_relocs
3999 struct ppc_dyn_relocs
*next
;
4001 /* The input section of the reloc. */
4004 /* Total number of relocs copied for the input section. */
4005 unsigned int count
: 31;
4007 /* Whether this entry is for STT_GNU_IFUNC symbols. */
4008 unsigned int ifunc
: 1;
4011 struct ppc_link_hash_entry
4013 struct elf_link_hash_entry elf
;
4016 /* A pointer to the most recently used stub hash entry against this
4018 struct ppc_stub_hash_entry
*stub_cache
;
4020 /* A pointer to the next symbol starting with a '.' */
4021 struct ppc_link_hash_entry
*next_dot_sym
;
4024 /* Track dynamic relocs copied for this symbol. */
4025 struct elf_dyn_relocs
*dyn_relocs
;
4027 /* Link between function code and descriptor symbols. */
4028 struct ppc_link_hash_entry
*oh
;
4030 /* Flag function code and descriptor symbols. */
4031 unsigned int is_func
:1;
4032 unsigned int is_func_descriptor
:1;
4033 unsigned int fake
:1;
4035 /* Whether global opd/toc sym has been adjusted or not.
4036 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4037 should be set for all globals defined in any opd/toc section. */
4038 unsigned int adjust_done
:1;
4040 /* Set if this is an out-of-line register save/restore function,
4041 with non-standard calling convention. */
4042 unsigned int save_res
:1;
4044 /* Set if a duplicate symbol with non-zero localentry is detected,
4045 even when the duplicate symbol does not provide a definition. */
4046 unsigned int non_zero_localentry
:1;
4048 /* Contexts in which symbol is used in the GOT (or TOC).
4049 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4050 corresponding relocs are encountered during check_relocs.
4051 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4052 indicate the corresponding GOT entry type is not needed.
4053 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4054 a TPREL one. We use a separate flag rather than setting TPREL
4055 just for convenience in distinguishing the two cases. */
4056 #define TLS_GD 1 /* GD reloc. */
4057 #define TLS_LD 2 /* LD reloc. */
4058 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4059 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4060 #define TLS_TLS 16 /* Any TLS reloc. */
4061 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4062 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4063 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4064 unsigned char tls_mask
;
4067 /* ppc64 ELF linker hash table. */
4069 struct ppc_link_hash_table
4071 struct elf_link_hash_table elf
;
4073 /* The stub hash table. */
4074 struct bfd_hash_table stub_hash_table
;
4076 /* Another hash table for plt_branch stubs. */
4077 struct bfd_hash_table branch_hash_table
;
4079 /* Hash table for function prologue tocsave. */
4080 htab_t tocsave_htab
;
4082 /* Various options and other info passed from the linker. */
4083 struct ppc64_elf_params
*params
;
4085 /* The size of sec_info below. */
4086 unsigned int sec_info_arr_size
;
4088 /* Per-section array of extra section info. Done this way rather
4089 than as part of ppc64_elf_section_data so we have the info for
4090 non-ppc64 sections. */
4093 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4098 /* The section group that this section belongs to. */
4099 struct map_stub
*group
;
4100 /* A temp section list pointer. */
4105 /* Linked list of groups. */
4106 struct map_stub
*group
;
4108 /* Temp used when calculating TOC pointers. */
4111 asection
*toc_first_sec
;
4113 /* Used when adding symbols. */
4114 struct ppc_link_hash_entry
*dot_syms
;
4116 /* Shortcuts to get to dynamic linker sections. */
4118 asection
*global_entry
;
4122 asection
*glink_eh_frame
;
4124 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4125 struct ppc_link_hash_entry
*tls_get_addr
;
4126 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4128 /* The size of reliplt used by got entry relocs. */
4129 bfd_size_type got_reli_size
;
4132 unsigned long stub_count
[ppc_stub_global_entry
];
4134 /* Number of stubs against global syms. */
4135 unsigned long stub_globals
;
4137 /* Set if we're linking code with function descriptors. */
4138 unsigned int opd_abi
:1;
4140 /* Support for multiple toc sections. */
4141 unsigned int do_multi_toc
:1;
4142 unsigned int multi_toc_needed
:1;
4143 unsigned int second_toc_pass
:1;
4144 unsigned int do_toc_opt
:1;
4146 /* Set if tls optimization is enabled. */
4147 unsigned int do_tls_opt
:1;
4150 unsigned int stub_error
:1;
4152 /* Whether func_desc_adjust needs to be run over symbols. */
4153 unsigned int need_func_desc_adj
:1;
4155 /* Whether there exist local gnu indirect function resolvers,
4156 referenced by dynamic relocations. */
4157 unsigned int local_ifunc_resolver
:1;
4158 unsigned int maybe_local_ifunc_resolver
:1;
4160 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4161 unsigned int has_plt_localentry0
:1;
4163 /* Incremented every time we size stubs. */
4164 unsigned int stub_iteration
;
4166 /* Small local sym cache. */
4167 struct sym_cache sym_cache
;
4170 /* Rename some of the generic section flags to better document how they
4173 /* Nonzero if this section has TLS related relocations. */
4174 #define has_tls_reloc sec_flg0
4176 /* Nonzero if this section has a call to __tls_get_addr. */
4177 #define has_tls_get_addr_call sec_flg1
4179 /* Nonzero if this section has any toc or got relocs. */
4180 #define has_toc_reloc sec_flg2
4182 /* Nonzero if this section has a call to another section that uses
4184 #define makes_toc_func_call sec_flg3
4186 /* Recursion protection when determining above flag. */
4187 #define call_check_in_progress sec_flg4
4188 #define call_check_done sec_flg5
4190 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4192 #define ppc_hash_table(p) \
4193 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4194 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4196 #define ppc_stub_hash_lookup(table, string, create, copy) \
4197 ((struct ppc_stub_hash_entry *) \
4198 bfd_hash_lookup ((table), (string), (create), (copy)))
4200 #define ppc_branch_hash_lookup(table, string, create, copy) \
4201 ((struct ppc_branch_hash_entry *) \
4202 bfd_hash_lookup ((table), (string), (create), (copy)))
4204 /* Create an entry in the stub hash table. */
4206 static struct bfd_hash_entry
*
4207 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4208 struct bfd_hash_table
*table
,
4211 /* Allocate the structure if it has not already been allocated by a
4215 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4220 /* Call the allocation method of the superclass. */
4221 entry
= bfd_hash_newfunc (entry
, table
, string
);
4224 struct ppc_stub_hash_entry
*eh
;
4226 /* Initialize the local fields. */
4227 eh
= (struct ppc_stub_hash_entry
*) entry
;
4228 eh
->stub_type
= ppc_stub_none
;
4230 eh
->stub_offset
= 0;
4231 eh
->target_value
= 0;
4232 eh
->target_section
= NULL
;
4241 /* Create an entry in the branch hash table. */
4243 static struct bfd_hash_entry
*
4244 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4245 struct bfd_hash_table
*table
,
4248 /* Allocate the structure if it has not already been allocated by a
4252 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4257 /* Call the allocation method of the superclass. */
4258 entry
= bfd_hash_newfunc (entry
, table
, string
);
4261 struct ppc_branch_hash_entry
*eh
;
4263 /* Initialize the local fields. */
4264 eh
= (struct ppc_branch_hash_entry
*) entry
;
4272 /* Create an entry in a ppc64 ELF linker hash table. */
4274 static struct bfd_hash_entry
*
4275 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4276 struct bfd_hash_table
*table
,
4279 /* Allocate the structure if it has not already been allocated by a
4283 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4288 /* Call the allocation method of the superclass. */
4289 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4292 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4294 memset (&eh
->u
.stub_cache
, 0,
4295 (sizeof (struct ppc_link_hash_entry
)
4296 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4298 /* When making function calls, old ABI code references function entry
4299 points (dot symbols), while new ABI code references the function
4300 descriptor symbol. We need to make any combination of reference and
4301 definition work together, without breaking archive linking.
4303 For a defined function "foo" and an undefined call to "bar":
4304 An old object defines "foo" and ".foo", references ".bar" (possibly
4306 A new object defines "foo" and references "bar".
4308 A new object thus has no problem with its undefined symbols being
4309 satisfied by definitions in an old object. On the other hand, the
4310 old object won't have ".bar" satisfied by a new object.
4312 Keep a list of newly added dot-symbols. */
4314 if (string
[0] == '.')
4316 struct ppc_link_hash_table
*htab
;
4318 htab
= (struct ppc_link_hash_table
*) table
;
4319 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4320 htab
->dot_syms
= eh
;
4327 struct tocsave_entry
{
4333 tocsave_htab_hash (const void *p
)
4335 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4336 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4340 tocsave_htab_eq (const void *p1
, const void *p2
)
4342 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4343 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4344 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4347 /* Destroy a ppc64 ELF linker hash table. */
4350 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4352 struct ppc_link_hash_table
*htab
;
4354 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4355 if (htab
->tocsave_htab
)
4356 htab_delete (htab
->tocsave_htab
);
4357 bfd_hash_table_free (&htab
->branch_hash_table
);
4358 bfd_hash_table_free (&htab
->stub_hash_table
);
4359 _bfd_elf_link_hash_table_free (obfd
);
4362 /* Create a ppc64 ELF linker hash table. */
4364 static struct bfd_link_hash_table
*
4365 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4367 struct ppc_link_hash_table
*htab
;
4368 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4370 htab
= bfd_zmalloc (amt
);
4374 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4375 sizeof (struct ppc_link_hash_entry
),
4382 /* Init the stub hash table too. */
4383 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4384 sizeof (struct ppc_stub_hash_entry
)))
4386 _bfd_elf_link_hash_table_free (abfd
);
4390 /* And the branch hash table. */
4391 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4392 sizeof (struct ppc_branch_hash_entry
)))
4394 bfd_hash_table_free (&htab
->stub_hash_table
);
4395 _bfd_elf_link_hash_table_free (abfd
);
4399 htab
->tocsave_htab
= htab_try_create (1024,
4403 if (htab
->tocsave_htab
== NULL
)
4405 ppc64_elf_link_hash_table_free (abfd
);
4408 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4410 /* Initializing two fields of the union is just cosmetic. We really
4411 only care about glist, but when compiled on a 32-bit host the
4412 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4413 debugger inspection of these fields look nicer. */
4414 htab
->elf
.init_got_refcount
.refcount
= 0;
4415 htab
->elf
.init_got_refcount
.glist
= NULL
;
4416 htab
->elf
.init_plt_refcount
.refcount
= 0;
4417 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4418 htab
->elf
.init_got_offset
.offset
= 0;
4419 htab
->elf
.init_got_offset
.glist
= NULL
;
4420 htab
->elf
.init_plt_offset
.offset
= 0;
4421 htab
->elf
.init_plt_offset
.glist
= NULL
;
4423 return &htab
->elf
.root
;
4426 /* Create sections for linker generated code. */
4429 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4431 struct ppc_link_hash_table
*htab
;
4434 htab
= ppc_hash_table (info
);
4436 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4437 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4438 if (htab
->params
->save_restore_funcs
)
4440 /* Create .sfpr for code to save and restore fp regs. */
4441 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4443 if (htab
->sfpr
== NULL
4444 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4448 if (bfd_link_relocatable (info
))
4451 /* Create .glink for lazy dynamic linking support. */
4452 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4454 if (htab
->glink
== NULL
4455 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4458 /* The part of .glink used by global entry stubs, separate so that
4459 it can be aligned appropriately without affecting htab->glink. */
4460 htab
->global_entry
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4462 if (htab
->global_entry
== NULL
4463 || ! bfd_set_section_alignment (dynobj
, htab
->global_entry
, 2))
4466 if (!info
->no_ld_generated_unwind_info
)
4468 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4469 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4470 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4473 if (htab
->glink_eh_frame
== NULL
4474 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4478 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4479 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4480 if (htab
->elf
.iplt
== NULL
4481 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4484 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4485 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4487 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4488 if (htab
->elf
.irelplt
== NULL
4489 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4492 /* Create branch lookup table for plt_branch stubs. */
4493 flags
= (SEC_ALLOC
| SEC_LOAD
4494 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4495 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4497 if (htab
->brlt
== NULL
4498 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4501 if (!bfd_link_pic (info
))
4504 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4505 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4506 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4509 if (htab
->relbrlt
== NULL
4510 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4516 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4519 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4520 struct ppc64_elf_params
*params
)
4522 struct ppc_link_hash_table
*htab
;
4524 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4526 /* Always hook our dynamic sections into the first bfd, which is the
4527 linker created stub bfd. This ensures that the GOT header is at
4528 the start of the output TOC section. */
4529 htab
= ppc_hash_table (info
);
4530 htab
->elf
.dynobj
= params
->stub_bfd
;
4531 htab
->params
= params
;
4533 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4536 /* Build a name for an entry in the stub hash table. */
4539 ppc_stub_name (const asection
*input_section
,
4540 const asection
*sym_sec
,
4541 const struct ppc_link_hash_entry
*h
,
4542 const Elf_Internal_Rela
*rel
)
4547 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4548 offsets from a sym as a branch target? In fact, we could
4549 probably assume the addend is always zero. */
4550 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4554 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4555 stub_name
= bfd_malloc (len
);
4556 if (stub_name
== NULL
)
4559 len
= sprintf (stub_name
, "%08x.%s+%x",
4560 input_section
->id
& 0xffffffff,
4561 h
->elf
.root
.root
.string
,
4562 (int) rel
->r_addend
& 0xffffffff);
4566 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4567 stub_name
= bfd_malloc (len
);
4568 if (stub_name
== NULL
)
4571 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4572 input_section
->id
& 0xffffffff,
4573 sym_sec
->id
& 0xffffffff,
4574 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4575 (int) rel
->r_addend
& 0xffffffff);
4577 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4578 stub_name
[len
- 2] = 0;
4582 /* Look up an entry in the stub hash. Stub entries are cached because
4583 creating the stub name takes a bit of time. */
4585 static struct ppc_stub_hash_entry
*
4586 ppc_get_stub_entry (const asection
*input_section
,
4587 const asection
*sym_sec
,
4588 struct ppc_link_hash_entry
*h
,
4589 const Elf_Internal_Rela
*rel
,
4590 struct ppc_link_hash_table
*htab
)
4592 struct ppc_stub_hash_entry
*stub_entry
;
4593 struct map_stub
*group
;
4595 /* If this input section is part of a group of sections sharing one
4596 stub section, then use the id of the first section in the group.
4597 Stub names need to include a section id, as there may well be
4598 more than one stub used to reach say, printf, and we need to
4599 distinguish between them. */
4600 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4604 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4605 && h
->u
.stub_cache
->h
== h
4606 && h
->u
.stub_cache
->group
== group
)
4608 stub_entry
= h
->u
.stub_cache
;
4614 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4615 if (stub_name
== NULL
)
4618 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4619 stub_name
, FALSE
, FALSE
);
4621 h
->u
.stub_cache
= stub_entry
;
4629 /* Add a new stub entry to the stub hash. Not all fields of the new
4630 stub entry are initialised. */
4632 static struct ppc_stub_hash_entry
*
4633 ppc_add_stub (const char *stub_name
,
4635 struct bfd_link_info
*info
)
4637 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4638 struct map_stub
*group
;
4641 struct ppc_stub_hash_entry
*stub_entry
;
4643 group
= htab
->sec_info
[section
->id
].u
.group
;
4644 link_sec
= group
->link_sec
;
4645 stub_sec
= group
->stub_sec
;
4646 if (stub_sec
== NULL
)
4652 namelen
= strlen (link_sec
->name
);
4653 len
= namelen
+ sizeof (STUB_SUFFIX
);
4654 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4658 memcpy (s_name
, link_sec
->name
, namelen
);
4659 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4660 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4661 if (stub_sec
== NULL
)
4663 group
->stub_sec
= stub_sec
;
4666 /* Enter this entry into the linker stub hash table. */
4667 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4669 if (stub_entry
== NULL
)
4671 /* xgettext:c-format */
4672 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4673 section
->owner
, stub_name
);
4677 stub_entry
->group
= group
;
4678 stub_entry
->stub_offset
= 0;
4682 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4683 not already done. */
4686 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4688 asection
*got
, *relgot
;
4690 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4692 if (!is_ppc64_elf (abfd
))
4698 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4701 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4702 | SEC_LINKER_CREATED
);
4704 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4706 || !bfd_set_section_alignment (abfd
, got
, 3))
4709 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4710 flags
| SEC_READONLY
);
4712 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4715 ppc64_elf_tdata (abfd
)->got
= got
;
4716 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4720 /* Follow indirect and warning symbol links. */
4722 static inline struct bfd_link_hash_entry
*
4723 follow_link (struct bfd_link_hash_entry
*h
)
4725 while (h
->type
== bfd_link_hash_indirect
4726 || h
->type
== bfd_link_hash_warning
)
4731 static inline struct elf_link_hash_entry
*
4732 elf_follow_link (struct elf_link_hash_entry
*h
)
4734 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4737 static inline struct ppc_link_hash_entry
*
4738 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4740 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4743 /* Merge PLT info on FROM with that on TO. */
4746 move_plt_plist (struct ppc_link_hash_entry
*from
,
4747 struct ppc_link_hash_entry
*to
)
4749 if (from
->elf
.plt
.plist
!= NULL
)
4751 if (to
->elf
.plt
.plist
!= NULL
)
4753 struct plt_entry
**entp
;
4754 struct plt_entry
*ent
;
4756 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4758 struct plt_entry
*dent
;
4760 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4761 if (dent
->addend
== ent
->addend
)
4763 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4770 *entp
= to
->elf
.plt
.plist
;
4773 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4774 from
->elf
.plt
.plist
= NULL
;
4778 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4781 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4782 struct elf_link_hash_entry
*dir
,
4783 struct elf_link_hash_entry
*ind
)
4785 struct ppc_link_hash_entry
*edir
, *eind
;
4787 edir
= (struct ppc_link_hash_entry
*) dir
;
4788 eind
= (struct ppc_link_hash_entry
*) ind
;
4790 edir
->is_func
|= eind
->is_func
;
4791 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4792 edir
->tls_mask
|= eind
->tls_mask
;
4793 if (eind
->oh
!= NULL
)
4794 edir
->oh
= ppc_follow_link (eind
->oh
);
4796 if (edir
->elf
.versioned
!= versioned_hidden
)
4797 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4798 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4799 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4800 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4801 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4802 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4804 /* If we were called to copy over info for a weak sym, don't copy
4805 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4806 in order to simplify readonly_dynrelocs and save a field in the
4807 symbol hash entry, but that means dyn_relocs can't be used in any
4808 tests about a specific symbol, or affect other symbol flags which
4810 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4813 /* Copy over any dynamic relocs we may have on the indirect sym. */
4814 if (eind
->dyn_relocs
!= NULL
)
4816 if (edir
->dyn_relocs
!= NULL
)
4818 struct elf_dyn_relocs
**pp
;
4819 struct elf_dyn_relocs
*p
;
4821 /* Add reloc counts against the indirect sym to the direct sym
4822 list. Merge any entries against the same section. */
4823 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4825 struct elf_dyn_relocs
*q
;
4827 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4828 if (q
->sec
== p
->sec
)
4830 q
->pc_count
+= p
->pc_count
;
4831 q
->count
+= p
->count
;
4838 *pp
= edir
->dyn_relocs
;
4841 edir
->dyn_relocs
= eind
->dyn_relocs
;
4842 eind
->dyn_relocs
= NULL
;
4845 /* Copy over got entries that we may have already seen to the
4846 symbol which just became indirect. */
4847 if (eind
->elf
.got
.glist
!= NULL
)
4849 if (edir
->elf
.got
.glist
!= NULL
)
4851 struct got_entry
**entp
;
4852 struct got_entry
*ent
;
4854 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4856 struct got_entry
*dent
;
4858 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4859 if (dent
->addend
== ent
->addend
4860 && dent
->owner
== ent
->owner
4861 && dent
->tls_type
== ent
->tls_type
)
4863 dent
->got
.refcount
+= ent
->got
.refcount
;
4870 *entp
= edir
->elf
.got
.glist
;
4873 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4874 eind
->elf
.got
.glist
= NULL
;
4877 /* And plt entries. */
4878 move_plt_plist (eind
, edir
);
4880 if (eind
->elf
.dynindx
!= -1)
4882 if (edir
->elf
.dynindx
!= -1)
4883 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4884 edir
->elf
.dynstr_index
);
4885 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4886 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4887 eind
->elf
.dynindx
= -1;
4888 eind
->elf
.dynstr_index
= 0;
4892 /* Find the function descriptor hash entry from the given function code
4893 hash entry FH. Link the entries via their OH fields. */
4895 static struct ppc_link_hash_entry
*
4896 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4898 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4902 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4904 fdh
= (struct ppc_link_hash_entry
*)
4905 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4909 fdh
->is_func_descriptor
= 1;
4915 fdh
= ppc_follow_link (fdh
);
4916 fdh
->is_func_descriptor
= 1;
4921 /* Make a fake function descriptor sym for the undefined code sym FH. */
4923 static struct ppc_link_hash_entry
*
4924 make_fdh (struct bfd_link_info
*info
,
4925 struct ppc_link_hash_entry
*fh
)
4927 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4928 struct bfd_link_hash_entry
*bh
= NULL
;
4929 struct ppc_link_hash_entry
*fdh
;
4930 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4934 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4935 fh
->elf
.root
.root
.string
+ 1,
4936 flags
, bfd_und_section_ptr
, 0,
4937 NULL
, FALSE
, FALSE
, &bh
))
4940 fdh
= (struct ppc_link_hash_entry
*) bh
;
4941 fdh
->elf
.non_elf
= 0;
4943 fdh
->is_func_descriptor
= 1;
4950 /* Fix function descriptor symbols defined in .opd sections to be
4954 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4955 struct bfd_link_info
*info
,
4956 Elf_Internal_Sym
*isym
,
4958 flagword
*flags ATTRIBUTE_UNUSED
,
4962 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4963 && (ibfd
->flags
& DYNAMIC
) == 0
4964 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4965 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4968 && strcmp ((*sec
)->name
, ".opd") == 0)
4972 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4973 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4974 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4976 /* If the symbol is a function defined in .opd, and the function
4977 code is in a discarded group, let it appear to be undefined. */
4978 if (!bfd_link_relocatable (info
)
4979 && (*sec
)->reloc_count
!= 0
4980 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4981 FALSE
) != (bfd_vma
) -1
4982 && discarded_section (code_sec
))
4984 *sec
= bfd_und_section_ptr
;
4985 isym
->st_shndx
= SHN_UNDEF
;
4988 else if (*sec
!= NULL
4989 && strcmp ((*sec
)->name
, ".toc") == 0
4990 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4992 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4994 htab
->params
->object_in_toc
= 1;
4997 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4999 if (abiversion (ibfd
) == 0)
5000 set_abiversion (ibfd
, 2);
5001 else if (abiversion (ibfd
) == 1)
5003 _bfd_error_handler (_("symbol '%s' has invalid st_other"
5004 " for ABI version 1"), *name
);
5005 bfd_set_error (bfd_error_bad_value
);
5013 /* Merge non-visibility st_other attributes: local entry point. */
5016 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5017 const Elf_Internal_Sym
*isym
,
5018 bfd_boolean definition
,
5019 bfd_boolean dynamic
)
5021 if (definition
&& (!dynamic
|| !h
->def_regular
))
5022 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5023 | ELF_ST_VISIBILITY (h
->other
));
5026 /* Hook called on merging a symbol. We use this to clear "fake" since
5027 we now have a real symbol. */
5030 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5031 const Elf_Internal_Sym
*isym
,
5032 asection
**psec ATTRIBUTE_UNUSED
,
5033 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5034 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5035 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5036 const asection
*oldsec ATTRIBUTE_UNUSED
)
5038 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5039 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5040 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5044 /* This function makes an old ABI object reference to ".bar" cause the
5045 inclusion of a new ABI object archive that defines "bar".
5046 NAME is a symbol defined in an archive. Return a symbol in the hash
5047 table that might be satisfied by the archive symbols. */
5049 static struct elf_link_hash_entry
*
5050 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5051 struct bfd_link_info
*info
,
5054 struct elf_link_hash_entry
*h
;
5058 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5060 /* Don't return this sym if it is a fake function descriptor
5061 created by add_symbol_adjust. */
5062 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5068 len
= strlen (name
);
5069 dot_name
= bfd_alloc (abfd
, len
+ 2);
5070 if (dot_name
== NULL
)
5071 return (struct elf_link_hash_entry
*) -1;
5073 memcpy (dot_name
+ 1, name
, len
+ 1);
5074 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5075 bfd_release (abfd
, dot_name
);
5079 /* This function satisfies all old ABI object references to ".bar" if a
5080 new ABI object defines "bar". Well, at least, undefined dot symbols
5081 are made weak. This stops later archive searches from including an
5082 object if we already have a function descriptor definition. It also
5083 prevents the linker complaining about undefined symbols.
5084 We also check and correct mismatched symbol visibility here. The
5085 most restrictive visibility of the function descriptor and the
5086 function entry symbol is used. */
5089 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5091 struct ppc_link_hash_table
*htab
;
5092 struct ppc_link_hash_entry
*fdh
;
5094 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5095 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5097 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5100 if (eh
->elf
.root
.root
.string
[0] != '.')
5103 htab
= ppc_hash_table (info
);
5107 fdh
= lookup_fdh (eh
, htab
);
5109 && !bfd_link_relocatable (info
)
5110 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5111 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5112 && eh
->elf
.ref_regular
)
5114 /* Make an undefined function descriptor sym, in order to
5115 pull in an --as-needed shared lib. Archives are handled
5117 fdh
= make_fdh (info
, eh
);
5124 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5125 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5127 /* Make both descriptor and entry symbol have the most
5128 constraining visibility of either symbol. */
5129 if (entry_vis
< descr_vis
)
5130 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5131 else if (entry_vis
> descr_vis
)
5132 eh
->elf
.other
+= descr_vis
- entry_vis
;
5134 /* Propagate reference flags from entry symbol to function
5135 descriptor symbol. */
5136 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5137 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5138 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5139 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5141 if (!fdh
->elf
.forced_local
5142 && fdh
->elf
.dynindx
== -1
5143 && fdh
->elf
.versioned
!= versioned_hidden
5144 && (bfd_link_dll (info
)
5145 || fdh
->elf
.def_dynamic
5146 || fdh
->elf
.ref_dynamic
)
5147 && (eh
->elf
.ref_regular
5148 || eh
->elf
.def_regular
))
5150 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5158 /* Set up opd section info and abiversion for IBFD, and process list
5159 of dot-symbols we made in link_hash_newfunc. */
5162 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5164 struct ppc_link_hash_table
*htab
;
5165 struct ppc_link_hash_entry
**p
, *eh
;
5166 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5168 if (opd
!= NULL
&& opd
->size
!= 0)
5170 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5171 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5173 if (abiversion (ibfd
) == 0)
5174 set_abiversion (ibfd
, 1);
5175 else if (abiversion (ibfd
) >= 2)
5177 /* xgettext:c-format */
5178 _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"),
5179 ibfd
, abiversion (ibfd
));
5180 bfd_set_error (bfd_error_bad_value
);
5185 if (is_ppc64_elf (info
->output_bfd
))
5187 /* For input files without an explicit abiversion in e_flags
5188 we should have flagged any with symbol st_other bits set
5189 as ELFv1 and above flagged those with .opd as ELFv2.
5190 Set the output abiversion if not yet set, and for any input
5191 still ambiguous, take its abiversion from the output.
5192 Differences in ABI are reported later. */
5193 if (abiversion (info
->output_bfd
) == 0)
5194 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5195 else if (abiversion (ibfd
) == 0)
5196 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5199 htab
= ppc_hash_table (info
);
5203 if (opd
!= NULL
&& opd
->size
!= 0
5204 && (ibfd
->flags
& DYNAMIC
) == 0
5205 && (opd
->flags
& SEC_RELOC
) != 0
5206 && opd
->reloc_count
!= 0
5207 && !bfd_is_abs_section (opd
->output_section
)
5208 && info
->gc_sections
)
5210 /* Garbage collection needs some extra help with .opd sections.
5211 We don't want to necessarily keep everything referenced by
5212 relocs in .opd, as that would keep all functions. Instead,
5213 if we reference an .opd symbol (a function descriptor), we
5214 want to keep the function code symbol's section. This is
5215 easy for global symbols, but for local syms we need to keep
5216 information about the associated function section. */
5218 asection
**opd_sym_map
;
5219 Elf_Internal_Shdr
*symtab_hdr
;
5220 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5222 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5223 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5224 if (opd_sym_map
== NULL
)
5226 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5227 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5231 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5232 rel_end
= relocs
+ opd
->reloc_count
- 1;
5233 for (rel
= relocs
; rel
< rel_end
; rel
++)
5235 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5236 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5238 if (r_type
== R_PPC64_ADDR64
5239 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5240 && r_symndx
< symtab_hdr
->sh_info
)
5242 Elf_Internal_Sym
*isym
;
5245 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5248 if (elf_section_data (opd
)->relocs
!= relocs
)
5253 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5254 if (s
!= NULL
&& s
!= opd
)
5255 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5258 if (elf_section_data (opd
)->relocs
!= relocs
)
5262 p
= &htab
->dot_syms
;
5263 while ((eh
= *p
) != NULL
)
5266 if (&eh
->elf
== htab
->elf
.hgot
)
5268 else if (htab
->elf
.hgot
== NULL
5269 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5270 htab
->elf
.hgot
= &eh
->elf
;
5271 else if (abiversion (ibfd
) <= 1)
5273 htab
->need_func_desc_adj
= 1;
5274 if (!add_symbol_adjust (eh
, info
))
5277 p
= &eh
->u
.next_dot_sym
;
5282 /* Undo hash table changes when an --as-needed input file is determined
5283 not to be needed. */
5286 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5287 struct bfd_link_info
*info
,
5288 enum notice_asneeded_action act
)
5290 if (act
== notice_not_needed
)
5292 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5297 htab
->dot_syms
= NULL
;
5299 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5302 /* If --just-symbols against a final linked binary, then assume we need
5303 toc adjusting stubs when calling functions defined there. */
5306 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5308 if ((sec
->flags
& SEC_CODE
) != 0
5309 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5310 && is_ppc64_elf (sec
->owner
))
5312 if (abiversion (sec
->owner
) >= 2
5313 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5314 sec
->has_toc_reloc
= 1;
5316 _bfd_elf_link_just_syms (sec
, info
);
5319 static struct plt_entry
**
5320 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5321 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5323 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5324 struct plt_entry
**local_plt
;
5325 unsigned char *local_got_tls_masks
;
5327 if (local_got_ents
== NULL
)
5329 bfd_size_type size
= symtab_hdr
->sh_info
;
5331 size
*= (sizeof (*local_got_ents
)
5332 + sizeof (*local_plt
)
5333 + sizeof (*local_got_tls_masks
));
5334 local_got_ents
= bfd_zalloc (abfd
, size
);
5335 if (local_got_ents
== NULL
)
5337 elf_local_got_ents (abfd
) = local_got_ents
;
5340 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5342 struct got_entry
*ent
;
5344 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5345 if (ent
->addend
== r_addend
5346 && ent
->owner
== abfd
5347 && ent
->tls_type
== tls_type
)
5351 bfd_size_type amt
= sizeof (*ent
);
5352 ent
= bfd_alloc (abfd
, amt
);
5355 ent
->next
= local_got_ents
[r_symndx
];
5356 ent
->addend
= r_addend
;
5358 ent
->tls_type
= tls_type
;
5359 ent
->is_indirect
= FALSE
;
5360 ent
->got
.refcount
= 0;
5361 local_got_ents
[r_symndx
] = ent
;
5363 ent
->got
.refcount
+= 1;
5366 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5367 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5368 local_got_tls_masks
[r_symndx
] |= tls_type
;
5370 return local_plt
+ r_symndx
;
5374 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5376 struct plt_entry
*ent
;
5378 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5379 if (ent
->addend
== addend
)
5383 bfd_size_type amt
= sizeof (*ent
);
5384 ent
= bfd_alloc (abfd
, amt
);
5388 ent
->addend
= addend
;
5389 ent
->plt
.refcount
= 0;
5392 ent
->plt
.refcount
+= 1;
5397 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5399 return (r_type
== R_PPC64_REL24
5400 || r_type
== R_PPC64_REL14
5401 || r_type
== R_PPC64_REL14_BRTAKEN
5402 || r_type
== R_PPC64_REL14_BRNTAKEN
5403 || r_type
== R_PPC64_ADDR24
5404 || r_type
== R_PPC64_ADDR14
5405 || r_type
== R_PPC64_ADDR14_BRTAKEN
5406 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5409 /* Look through the relocs for a section during the first phase, and
5410 calculate needed space in the global offset table, procedure
5411 linkage table, and dynamic reloc sections. */
5414 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5415 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5417 struct ppc_link_hash_table
*htab
;
5418 Elf_Internal_Shdr
*symtab_hdr
;
5419 struct elf_link_hash_entry
**sym_hashes
;
5420 const Elf_Internal_Rela
*rel
;
5421 const Elf_Internal_Rela
*rel_end
;
5423 struct elf_link_hash_entry
*tga
, *dottga
;
5426 if (bfd_link_relocatable (info
))
5429 /* Don't do anything special with non-loaded, non-alloced sections.
5430 In particular, any relocs in such sections should not affect GOT
5431 and PLT reference counting (ie. we don't allow them to create GOT
5432 or PLT entries), there's no possibility or desire to optimize TLS
5433 relocs, and there's not much point in propagating relocs to shared
5434 libs that the dynamic linker won't relocate. */
5435 if ((sec
->flags
& SEC_ALLOC
) == 0)
5438 BFD_ASSERT (is_ppc64_elf (abfd
));
5440 htab
= ppc_hash_table (info
);
5444 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5445 FALSE
, FALSE
, TRUE
);
5446 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5447 FALSE
, FALSE
, TRUE
);
5448 symtab_hdr
= &elf_symtab_hdr (abfd
);
5449 sym_hashes
= elf_sym_hashes (abfd
);
5451 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5452 rel_end
= relocs
+ sec
->reloc_count
;
5453 for (rel
= relocs
; rel
< rel_end
; rel
++)
5455 unsigned long r_symndx
;
5456 struct elf_link_hash_entry
*h
;
5457 enum elf_ppc64_reloc_type r_type
;
5459 struct _ppc64_elf_section_data
*ppc64_sec
;
5460 struct plt_entry
**ifunc
, **plt_list
;
5462 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5463 if (r_symndx
< symtab_hdr
->sh_info
)
5467 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5468 h
= elf_follow_link (h
);
5470 if (h
== htab
->elf
.hgot
)
5471 sec
->has_toc_reloc
= 1;
5478 if (h
->type
== STT_GNU_IFUNC
)
5481 ifunc
= &h
->plt
.plist
;
5486 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5491 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5493 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5494 rel
->r_addend
, PLT_IFUNC
);
5500 r_type
= ELF64_R_TYPE (rel
->r_info
);
5505 /* These special tls relocs tie a call to __tls_get_addr with
5506 its parameter symbol. */
5509 case R_PPC64_GOT_TLSLD16
:
5510 case R_PPC64_GOT_TLSLD16_LO
:
5511 case R_PPC64_GOT_TLSLD16_HI
:
5512 case R_PPC64_GOT_TLSLD16_HA
:
5513 tls_type
= TLS_TLS
| TLS_LD
;
5516 case R_PPC64_GOT_TLSGD16
:
5517 case R_PPC64_GOT_TLSGD16_LO
:
5518 case R_PPC64_GOT_TLSGD16_HI
:
5519 case R_PPC64_GOT_TLSGD16_HA
:
5520 tls_type
= TLS_TLS
| TLS_GD
;
5523 case R_PPC64_GOT_TPREL16_DS
:
5524 case R_PPC64_GOT_TPREL16_LO_DS
:
5525 case R_PPC64_GOT_TPREL16_HI
:
5526 case R_PPC64_GOT_TPREL16_HA
:
5527 if (bfd_link_dll (info
))
5528 info
->flags
|= DF_STATIC_TLS
;
5529 tls_type
= TLS_TLS
| TLS_TPREL
;
5532 case R_PPC64_GOT_DTPREL16_DS
:
5533 case R_PPC64_GOT_DTPREL16_LO_DS
:
5534 case R_PPC64_GOT_DTPREL16_HI
:
5535 case R_PPC64_GOT_DTPREL16_HA
:
5536 tls_type
= TLS_TLS
| TLS_DTPREL
;
5538 sec
->has_tls_reloc
= 1;
5542 case R_PPC64_GOT16_DS
:
5543 case R_PPC64_GOT16_HA
:
5544 case R_PPC64_GOT16_HI
:
5545 case R_PPC64_GOT16_LO
:
5546 case R_PPC64_GOT16_LO_DS
:
5547 /* This symbol requires a global offset table entry. */
5548 sec
->has_toc_reloc
= 1;
5549 if (r_type
== R_PPC64_GOT_TLSLD16
5550 || r_type
== R_PPC64_GOT_TLSGD16
5551 || r_type
== R_PPC64_GOT_TPREL16_DS
5552 || r_type
== R_PPC64_GOT_DTPREL16_DS
5553 || r_type
== R_PPC64_GOT16
5554 || r_type
== R_PPC64_GOT16_DS
)
5556 htab
->do_multi_toc
= 1;
5557 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5560 if (ppc64_elf_tdata (abfd
)->got
== NULL
5561 && !create_got_section (abfd
, info
))
5566 struct ppc_link_hash_entry
*eh
;
5567 struct got_entry
*ent
;
5569 eh
= (struct ppc_link_hash_entry
*) h
;
5570 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5571 if (ent
->addend
== rel
->r_addend
5572 && ent
->owner
== abfd
5573 && ent
->tls_type
== tls_type
)
5577 bfd_size_type amt
= sizeof (*ent
);
5578 ent
= bfd_alloc (abfd
, amt
);
5581 ent
->next
= eh
->elf
.got
.glist
;
5582 ent
->addend
= rel
->r_addend
;
5584 ent
->tls_type
= tls_type
;
5585 ent
->is_indirect
= FALSE
;
5586 ent
->got
.refcount
= 0;
5587 eh
->elf
.got
.glist
= ent
;
5589 ent
->got
.refcount
+= 1;
5590 eh
->tls_mask
|= tls_type
;
5593 /* This is a global offset table entry for a local symbol. */
5594 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5595 rel
->r_addend
, tls_type
))
5598 /* We may also need a plt entry if the symbol turns out to be
5600 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5602 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5607 case R_PPC64_PLT16_HA
:
5608 case R_PPC64_PLT16_HI
:
5609 case R_PPC64_PLT16_LO
:
5612 /* This symbol requires a procedure linkage table entry. */
5617 if (h
->root
.root
.string
[0] == '.'
5618 && h
->root
.root
.string
[1] != '\0')
5619 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5620 plt_list
= &h
->plt
.plist
;
5622 if (plt_list
== NULL
)
5624 /* It does not make sense to have a procedure linkage
5625 table entry for a non-ifunc local symbol. */
5626 info
->callbacks
->einfo
5627 /* xgettext:c-format */
5628 (_("%H: %s reloc against local symbol\n"),
5629 abfd
, sec
, rel
->r_offset
,
5630 ppc64_elf_howto_table
[r_type
]->name
);
5631 bfd_set_error (bfd_error_bad_value
);
5634 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5638 /* The following relocations don't need to propagate the
5639 relocation if linking a shared object since they are
5640 section relative. */
5641 case R_PPC64_SECTOFF
:
5642 case R_PPC64_SECTOFF_LO
:
5643 case R_PPC64_SECTOFF_HI
:
5644 case R_PPC64_SECTOFF_HA
:
5645 case R_PPC64_SECTOFF_DS
:
5646 case R_PPC64_SECTOFF_LO_DS
:
5647 case R_PPC64_DTPREL16
:
5648 case R_PPC64_DTPREL16_LO
:
5649 case R_PPC64_DTPREL16_HI
:
5650 case R_PPC64_DTPREL16_HA
:
5651 case R_PPC64_DTPREL16_DS
:
5652 case R_PPC64_DTPREL16_LO_DS
:
5653 case R_PPC64_DTPREL16_HIGH
:
5654 case R_PPC64_DTPREL16_HIGHA
:
5655 case R_PPC64_DTPREL16_HIGHER
:
5656 case R_PPC64_DTPREL16_HIGHERA
:
5657 case R_PPC64_DTPREL16_HIGHEST
:
5658 case R_PPC64_DTPREL16_HIGHESTA
:
5663 case R_PPC64_REL16_LO
:
5664 case R_PPC64_REL16_HI
:
5665 case R_PPC64_REL16_HA
:
5666 case R_PPC64_REL16DX_HA
:
5669 /* Not supported as a dynamic relocation. */
5670 case R_PPC64_ADDR64_LOCAL
:
5671 if (bfd_link_pic (info
))
5673 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5675 /* xgettext:c-format */
5676 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5677 "in shared libraries and PIEs\n"),
5678 abfd
, sec
, rel
->r_offset
,
5679 ppc64_elf_howto_table
[r_type
]->name
);
5680 bfd_set_error (bfd_error_bad_value
);
5686 case R_PPC64_TOC16_DS
:
5687 htab
->do_multi_toc
= 1;
5688 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5690 case R_PPC64_TOC16_LO
:
5691 case R_PPC64_TOC16_HI
:
5692 case R_PPC64_TOC16_HA
:
5693 case R_PPC64_TOC16_LO_DS
:
5694 sec
->has_toc_reloc
= 1;
5701 /* This relocation describes the C++ object vtable hierarchy.
5702 Reconstruct it for later use during GC. */
5703 case R_PPC64_GNU_VTINHERIT
:
5704 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5708 /* This relocation describes which C++ vtable entries are actually
5709 used. Record for later use during GC. */
5710 case R_PPC64_GNU_VTENTRY
:
5711 BFD_ASSERT (h
!= NULL
);
5713 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5718 case R_PPC64_REL14_BRTAKEN
:
5719 case R_PPC64_REL14_BRNTAKEN
:
5721 asection
*dest
= NULL
;
5723 /* Heuristic: If jumping outside our section, chances are
5724 we are going to need a stub. */
5727 /* If the sym is weak it may be overridden later, so
5728 don't assume we know where a weak sym lives. */
5729 if (h
->root
.type
== bfd_link_hash_defined
)
5730 dest
= h
->root
.u
.def
.section
;
5734 Elf_Internal_Sym
*isym
;
5736 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5741 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5745 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5754 if (h
->root
.root
.string
[0] == '.'
5755 && h
->root
.root
.string
[1] != '\0')
5756 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5758 if (h
== tga
|| h
== dottga
)
5760 sec
->has_tls_reloc
= 1;
5762 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5763 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5764 /* We have a new-style __tls_get_addr call with
5768 /* Mark this section as having an old-style call. */
5769 sec
->has_tls_get_addr_call
= 1;
5771 plt_list
= &h
->plt
.plist
;
5774 /* We may need a .plt entry if the function this reloc
5775 refers to is in a shared lib. */
5777 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5781 case R_PPC64_ADDR14
:
5782 case R_PPC64_ADDR14_BRNTAKEN
:
5783 case R_PPC64_ADDR14_BRTAKEN
:
5784 case R_PPC64_ADDR24
:
5787 case R_PPC64_TPREL64
:
5788 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5789 if (bfd_link_dll (info
))
5790 info
->flags
|= DF_STATIC_TLS
;
5793 case R_PPC64_DTPMOD64
:
5794 if (rel
+ 1 < rel_end
5795 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5796 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5797 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5799 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5802 case R_PPC64_DTPREL64
:
5803 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5805 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5806 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5807 /* This is the second reloc of a dtpmod, dtprel pair.
5808 Don't mark with TLS_DTPREL. */
5812 sec
->has_tls_reloc
= 1;
5815 struct ppc_link_hash_entry
*eh
;
5816 eh
= (struct ppc_link_hash_entry
*) h
;
5817 eh
->tls_mask
|= tls_type
;
5820 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5821 rel
->r_addend
, tls_type
))
5824 ppc64_sec
= ppc64_elf_section_data (sec
);
5825 if (ppc64_sec
->sec_type
!= sec_toc
)
5829 /* One extra to simplify get_tls_mask. */
5830 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5831 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5832 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5834 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5835 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5836 if (ppc64_sec
->u
.toc
.add
== NULL
)
5838 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5839 ppc64_sec
->sec_type
= sec_toc
;
5841 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5842 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5843 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5845 /* Mark the second slot of a GD or LD entry.
5846 -1 to indicate GD and -2 to indicate LD. */
5847 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5848 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5849 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5850 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5853 case R_PPC64_TPREL16
:
5854 case R_PPC64_TPREL16_LO
:
5855 case R_PPC64_TPREL16_HI
:
5856 case R_PPC64_TPREL16_HA
:
5857 case R_PPC64_TPREL16_DS
:
5858 case R_PPC64_TPREL16_LO_DS
:
5859 case R_PPC64_TPREL16_HIGH
:
5860 case R_PPC64_TPREL16_HIGHA
:
5861 case R_PPC64_TPREL16_HIGHER
:
5862 case R_PPC64_TPREL16_HIGHERA
:
5863 case R_PPC64_TPREL16_HIGHEST
:
5864 case R_PPC64_TPREL16_HIGHESTA
:
5865 if (bfd_link_dll (info
))
5866 info
->flags
|= DF_STATIC_TLS
;
5869 case R_PPC64_ADDR64
:
5871 && rel
+ 1 < rel_end
5872 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5875 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5879 case R_PPC64_ADDR16
:
5880 case R_PPC64_ADDR16_DS
:
5881 case R_PPC64_ADDR16_HA
:
5882 case R_PPC64_ADDR16_HI
:
5883 case R_PPC64_ADDR16_HIGH
:
5884 case R_PPC64_ADDR16_HIGHA
:
5885 case R_PPC64_ADDR16_HIGHER
:
5886 case R_PPC64_ADDR16_HIGHERA
:
5887 case R_PPC64_ADDR16_HIGHEST
:
5888 case R_PPC64_ADDR16_HIGHESTA
:
5889 case R_PPC64_ADDR16_LO
:
5890 case R_PPC64_ADDR16_LO_DS
:
5891 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5892 && rel
->r_addend
== 0)
5894 /* We may need a .plt entry if this reloc refers to a
5895 function in a shared lib. */
5896 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5898 h
->pointer_equality_needed
= 1;
5905 case R_PPC64_ADDR32
:
5906 case R_PPC64_UADDR16
:
5907 case R_PPC64_UADDR32
:
5908 case R_PPC64_UADDR64
:
5910 if (h
!= NULL
&& !bfd_link_pic (info
))
5911 /* We may need a copy reloc. */
5914 /* Don't propagate .opd relocs. */
5915 if (NO_OPD_RELOCS
&& is_opd
)
5918 /* If we are creating a shared library, and this is a reloc
5919 against a global symbol, or a non PC relative reloc
5920 against a local symbol, then we need to copy the reloc
5921 into the shared library. However, if we are linking with
5922 -Bsymbolic, we do not need to copy a reloc against a
5923 global symbol which is defined in an object we are
5924 including in the link (i.e., DEF_REGULAR is set). At
5925 this point we have not seen all the input files, so it is
5926 possible that DEF_REGULAR is not set now but will be set
5927 later (it is never cleared). In case of a weak definition,
5928 DEF_REGULAR may be cleared later by a strong definition in
5929 a shared library. We account for that possibility below by
5930 storing information in the dyn_relocs field of the hash
5931 table entry. A similar situation occurs when creating
5932 shared libraries and symbol visibility changes render the
5935 If on the other hand, we are creating an executable, we
5936 may need to keep relocations for symbols satisfied by a
5937 dynamic library if we manage to avoid copy relocs for the
5940 if ((bfd_link_pic (info
)
5941 && (must_be_dyn_reloc (info
, r_type
)
5943 && (!SYMBOLIC_BIND (info
, h
)
5944 || h
->root
.type
== bfd_link_hash_defweak
5945 || !h
->def_regular
))))
5946 || (ELIMINATE_COPY_RELOCS
5947 && !bfd_link_pic (info
)
5949 && (h
->root
.type
== bfd_link_hash_defweak
5950 || !h
->def_regular
))
5951 || (!bfd_link_pic (info
)
5954 /* We must copy these reloc types into the output file.
5955 Create a reloc section in dynobj and make room for
5959 sreloc
= _bfd_elf_make_dynamic_reloc_section
5960 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5966 /* If this is a global symbol, we count the number of
5967 relocations we need for this symbol. */
5970 struct elf_dyn_relocs
*p
;
5971 struct elf_dyn_relocs
**head
;
5973 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5975 if (p
== NULL
|| p
->sec
!= sec
)
5977 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5987 if (!must_be_dyn_reloc (info
, r_type
))
5992 /* Track dynamic relocs needed for local syms too.
5993 We really need local syms available to do this
5995 struct ppc_dyn_relocs
*p
;
5996 struct ppc_dyn_relocs
**head
;
5997 bfd_boolean is_ifunc
;
6000 Elf_Internal_Sym
*isym
;
6002 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6007 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6011 vpp
= &elf_section_data (s
)->local_dynrel
;
6012 head
= (struct ppc_dyn_relocs
**) vpp
;
6013 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6015 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6017 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6019 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6025 p
->ifunc
= is_ifunc
;
6041 /* Merge backend specific data from an object file to the output
6042 object file when linking. */
6045 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6047 bfd
*obfd
= info
->output_bfd
;
6048 unsigned long iflags
, oflags
;
6050 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6053 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6056 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6059 iflags
= elf_elfheader (ibfd
)->e_flags
;
6060 oflags
= elf_elfheader (obfd
)->e_flags
;
6062 if (iflags
& ~EF_PPC64_ABI
)
6065 /* xgettext:c-format */
6066 (_("%pB uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6067 bfd_set_error (bfd_error_bad_value
);
6070 else if (iflags
!= oflags
&& iflags
!= 0)
6073 /* xgettext:c-format */
6074 (_("%pB: ABI version %ld is not compatible with ABI version %ld output"),
6075 ibfd
, iflags
, oflags
);
6076 bfd_set_error (bfd_error_bad_value
);
6080 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6082 /* Merge Tag_compatibility attributes and any common GNU ones. */
6083 _bfd_elf_merge_object_attributes (ibfd
, info
);
6089 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6091 /* Print normal ELF private data. */
6092 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6094 if (elf_elfheader (abfd
)->e_flags
!= 0)
6098 fprintf (file
, _("private flags = 0x%lx:"),
6099 elf_elfheader (abfd
)->e_flags
);
6101 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6102 fprintf (file
, _(" [abiv%ld]"),
6103 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6110 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6111 of the code entry point, and its section, which must be in the same
6112 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6115 opd_entry_value (asection
*opd_sec
,
6117 asection
**code_sec
,
6119 bfd_boolean in_code_sec
)
6121 bfd
*opd_bfd
= opd_sec
->owner
;
6122 Elf_Internal_Rela
*relocs
;
6123 Elf_Internal_Rela
*lo
, *hi
, *look
;
6126 /* No relocs implies we are linking a --just-symbols object, or looking
6127 at a final linked executable with addr2line or somesuch. */
6128 if (opd_sec
->reloc_count
== 0)
6130 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6132 if (contents
== NULL
)
6134 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6135 return (bfd_vma
) -1;
6136 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6139 /* PR 17512: file: 64b9dfbb. */
6140 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6141 return (bfd_vma
) -1;
6143 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6144 if (code_sec
!= NULL
)
6146 asection
*sec
, *likely
= NULL
;
6152 && val
< sec
->vma
+ sec
->size
)
6158 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6160 && (sec
->flags
& SEC_LOAD
) != 0
6161 && (sec
->flags
& SEC_ALLOC
) != 0)
6166 if (code_off
!= NULL
)
6167 *code_off
= val
- likely
->vma
;
6173 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6175 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6177 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6178 /* PR 17512: file: df8e1fd6. */
6180 return (bfd_vma
) -1;
6182 /* Go find the opd reloc at the sym address. */
6184 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6188 look
= lo
+ (hi
- lo
) / 2;
6189 if (look
->r_offset
< offset
)
6191 else if (look
->r_offset
> offset
)
6195 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6197 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6198 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6200 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6201 asection
*sec
= NULL
;
6203 if (symndx
>= symtab_hdr
->sh_info
6204 && elf_sym_hashes (opd_bfd
) != NULL
)
6206 struct elf_link_hash_entry
**sym_hashes
;
6207 struct elf_link_hash_entry
*rh
;
6209 sym_hashes
= elf_sym_hashes (opd_bfd
);
6210 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6213 rh
= elf_follow_link (rh
);
6214 if (rh
->root
.type
!= bfd_link_hash_defined
6215 && rh
->root
.type
!= bfd_link_hash_defweak
)
6217 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6219 val
= rh
->root
.u
.def
.value
;
6220 sec
= rh
->root
.u
.def
.section
;
6227 Elf_Internal_Sym
*sym
;
6229 if (symndx
< symtab_hdr
->sh_info
)
6231 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6234 size_t symcnt
= symtab_hdr
->sh_info
;
6235 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6240 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6246 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6252 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6255 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6256 val
= sym
->st_value
;
6259 val
+= look
->r_addend
;
6260 if (code_off
!= NULL
)
6262 if (code_sec
!= NULL
)
6264 if (in_code_sec
&& *code_sec
!= sec
)
6269 if (sec
->output_section
!= NULL
)
6270 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6279 /* If the ELF symbol SYM might be a function in SEC, return the
6280 function size and set *CODE_OFF to the function's entry point,
6281 otherwise return zero. */
6283 static bfd_size_type
6284 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6289 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6290 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6294 if (!(sym
->flags
& BSF_SYNTHETIC
))
6295 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6297 if (strcmp (sym
->section
->name
, ".opd") == 0)
6299 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6300 bfd_vma symval
= sym
->value
;
6303 && opd
->adjust
!= NULL
6304 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6306 /* opd_entry_value will use cached relocs that have been
6307 adjusted, but with raw symbols. That means both local
6308 and global symbols need adjusting. */
6309 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6315 if (opd_entry_value (sym
->section
, symval
,
6316 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6318 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6319 symbol. This size has nothing to do with the code size of the
6320 function, which is what we're supposed to return, but the
6321 code size isn't available without looking up the dot-sym.
6322 However, doing that would be a waste of time particularly
6323 since elf_find_function will look at the dot-sym anyway.
6324 Now, elf_find_function will keep the largest size of any
6325 function sym found at the code address of interest, so return
6326 1 here to avoid it incorrectly caching a larger function size
6327 for a small function. This does mean we return the wrong
6328 size for a new-ABI function of size 24, but all that does is
6329 disable caching for such functions. */
6335 if (sym
->section
!= sec
)
6337 *code_off
= sym
->value
;
6344 /* Return true if symbol is a strong function defined in an ELFv2
6345 object with st_other localentry bits of zero, ie. its local entry
6346 point coincides with its global entry point. */
6349 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6352 && h
->type
== STT_FUNC
6353 && h
->root
.type
== bfd_link_hash_defined
6354 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6355 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6356 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6357 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6360 /* Return true if symbol is defined in a regular object file. */
6363 is_static_defined (struct elf_link_hash_entry
*h
)
6365 return ((h
->root
.type
== bfd_link_hash_defined
6366 || h
->root
.type
== bfd_link_hash_defweak
)
6367 && h
->root
.u
.def
.section
!= NULL
6368 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6371 /* If FDH is a function descriptor symbol, return the associated code
6372 entry symbol if it is defined. Return NULL otherwise. */
6374 static struct ppc_link_hash_entry
*
6375 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6377 if (fdh
->is_func_descriptor
)
6379 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6380 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6381 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6387 /* If FH is a function code entry symbol, return the associated
6388 function descriptor symbol if it is defined. Return NULL otherwise. */
6390 static struct ppc_link_hash_entry
*
6391 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6394 && fh
->oh
->is_func_descriptor
)
6396 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6397 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6398 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6404 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6406 /* Garbage collect sections, after first dealing with dot-symbols. */
6409 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6411 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6413 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6415 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6416 htab
->need_func_desc_adj
= 0;
6418 return bfd_elf_gc_sections (abfd
, info
);
6421 /* Mark all our entry sym sections, both opd and code section. */
6424 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6426 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6427 struct bfd_sym_chain
*sym
;
6432 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6434 struct ppc_link_hash_entry
*eh
, *fh
;
6437 eh
= (struct ppc_link_hash_entry
*)
6438 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6441 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6442 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6445 fh
= defined_code_entry (eh
);
6448 sec
= fh
->elf
.root
.u
.def
.section
;
6449 sec
->flags
|= SEC_KEEP
;
6451 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6452 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6453 eh
->elf
.root
.u
.def
.value
,
6454 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6455 sec
->flags
|= SEC_KEEP
;
6457 sec
= eh
->elf
.root
.u
.def
.section
;
6458 sec
->flags
|= SEC_KEEP
;
6462 /* Mark sections containing dynamically referenced symbols. When
6463 building shared libraries, we must assume that any visible symbol is
6467 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6469 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6470 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6471 struct ppc_link_hash_entry
*fdh
;
6472 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6474 /* Dynamic linking info is on the func descriptor sym. */
6475 fdh
= defined_func_desc (eh
);
6479 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6480 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6481 && ((eh
->elf
.ref_dynamic
&& !eh
->elf
.forced_local
)
6482 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6483 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6484 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6485 && (!bfd_link_executable (info
)
6486 || info
->gc_keep_exported
6487 || info
->export_dynamic
6490 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6491 && (eh
->elf
.versioned
>= versioned
6492 || !bfd_hide_sym_by_version (info
->version_info
,
6493 eh
->elf
.root
.root
.string
)))))
6496 struct ppc_link_hash_entry
*fh
;
6498 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6500 /* Function descriptor syms cause the associated
6501 function code sym section to be marked. */
6502 fh
= defined_code_entry (eh
);
6505 code_sec
= fh
->elf
.root
.u
.def
.section
;
6506 code_sec
->flags
|= SEC_KEEP
;
6508 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6509 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6510 eh
->elf
.root
.u
.def
.value
,
6511 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6512 code_sec
->flags
|= SEC_KEEP
;
6518 /* Return the section that should be marked against GC for a given
6522 ppc64_elf_gc_mark_hook (asection
*sec
,
6523 struct bfd_link_info
*info
,
6524 Elf_Internal_Rela
*rel
,
6525 struct elf_link_hash_entry
*h
,
6526 Elf_Internal_Sym
*sym
)
6530 /* Syms return NULL if we're marking .opd, so we avoid marking all
6531 function sections, as all functions are referenced in .opd. */
6533 if (get_opd_info (sec
) != NULL
)
6538 enum elf_ppc64_reloc_type r_type
;
6539 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6541 r_type
= ELF64_R_TYPE (rel
->r_info
);
6544 case R_PPC64_GNU_VTINHERIT
:
6545 case R_PPC64_GNU_VTENTRY
:
6549 switch (h
->root
.type
)
6551 case bfd_link_hash_defined
:
6552 case bfd_link_hash_defweak
:
6553 eh
= (struct ppc_link_hash_entry
*) h
;
6554 fdh
= defined_func_desc (eh
);
6557 /* -mcall-aixdesc code references the dot-symbol on
6558 a call reloc. Mark the function descriptor too
6559 against garbage collection. */
6561 if (fdh
->elf
.is_weakalias
)
6562 weakdef (&fdh
->elf
)->mark
= 1;
6566 /* Function descriptor syms cause the associated
6567 function code sym section to be marked. */
6568 fh
= defined_code_entry (eh
);
6571 /* They also mark their opd section. */
6572 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6574 rsec
= fh
->elf
.root
.u
.def
.section
;
6576 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6577 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6578 eh
->elf
.root
.u
.def
.value
,
6579 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6580 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6582 rsec
= h
->root
.u
.def
.section
;
6585 case bfd_link_hash_common
:
6586 rsec
= h
->root
.u
.c
.p
->section
;
6590 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6596 struct _opd_sec_data
*opd
;
6598 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6599 opd
= get_opd_info (rsec
);
6600 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6604 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6611 /* The maximum size of .sfpr. */
6612 #define SFPR_MAX (218*4)
6614 struct sfpr_def_parms
6616 const char name
[12];
6617 unsigned char lo
, hi
;
6618 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6619 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6622 /* Auto-generate _save*, _rest* functions in .sfpr.
6623 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6627 sfpr_define (struct bfd_link_info
*info
,
6628 const struct sfpr_def_parms
*parm
,
6631 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6633 size_t len
= strlen (parm
->name
);
6634 bfd_boolean writing
= FALSE
;
6640 memcpy (sym
, parm
->name
, len
);
6643 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6645 struct ppc_link_hash_entry
*h
;
6647 sym
[len
+ 0] = i
/ 10 + '0';
6648 sym
[len
+ 1] = i
% 10 + '0';
6649 h
= (struct ppc_link_hash_entry
*)
6650 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6651 if (stub_sec
!= NULL
)
6654 && h
->elf
.root
.type
== bfd_link_hash_defined
6655 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6657 struct elf_link_hash_entry
*s
;
6659 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6660 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6663 if (s
->root
.type
== bfd_link_hash_new
6664 || (s
->root
.type
= bfd_link_hash_defined
6665 && s
->root
.u
.def
.section
== stub_sec
))
6667 s
->root
.type
= bfd_link_hash_defined
;
6668 s
->root
.u
.def
.section
= stub_sec
;
6669 s
->root
.u
.def
.value
= (stub_sec
->size
- htab
->sfpr
->size
6670 + h
->elf
.root
.u
.def
.value
);
6673 s
->ref_regular_nonweak
= 1;
6674 s
->forced_local
= 1;
6676 s
->root
.linker_def
= 1;
6684 if (!h
->elf
.def_regular
)
6686 h
->elf
.root
.type
= bfd_link_hash_defined
;
6687 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6688 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6689 h
->elf
.type
= STT_FUNC
;
6690 h
->elf
.def_regular
= 1;
6692 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6694 if (htab
->sfpr
->contents
== NULL
)
6696 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6697 if (htab
->sfpr
->contents
== NULL
)
6704 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6706 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6708 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6709 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6717 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6719 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6724 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6726 p
= savegpr0 (abfd
, p
, r
);
6727 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6729 bfd_put_32 (abfd
, BLR
, p
);
6734 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6736 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6741 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6743 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6745 p
= restgpr0 (abfd
, p
, r
);
6746 bfd_put_32 (abfd
, MTLR_R0
, p
);
6750 p
= restgpr0 (abfd
, p
, 30);
6751 p
= restgpr0 (abfd
, p
, 31);
6753 bfd_put_32 (abfd
, BLR
, p
);
6758 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6760 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6765 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6767 p
= savegpr1 (abfd
, p
, r
);
6768 bfd_put_32 (abfd
, BLR
, p
);
6773 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6775 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6780 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6782 p
= restgpr1 (abfd
, p
, r
);
6783 bfd_put_32 (abfd
, BLR
, p
);
6788 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6790 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6795 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6797 p
= savefpr (abfd
, p
, r
);
6798 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6800 bfd_put_32 (abfd
, BLR
, p
);
6805 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6807 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6812 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6814 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6816 p
= restfpr (abfd
, p
, r
);
6817 bfd_put_32 (abfd
, MTLR_R0
, p
);
6821 p
= restfpr (abfd
, p
, 30);
6822 p
= restfpr (abfd
, p
, 31);
6824 bfd_put_32 (abfd
, BLR
, p
);
6829 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6831 p
= savefpr (abfd
, p
, r
);
6832 bfd_put_32 (abfd
, BLR
, p
);
6837 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6839 p
= restfpr (abfd
, p
, r
);
6840 bfd_put_32 (abfd
, BLR
, p
);
6845 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6847 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6849 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6854 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6856 p
= savevr (abfd
, p
, r
);
6857 bfd_put_32 (abfd
, BLR
, p
);
6862 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6864 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6866 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6871 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6873 p
= restvr (abfd
, p
, r
);
6874 bfd_put_32 (abfd
, BLR
, p
);
6878 /* Called via elf_link_hash_traverse to transfer dynamic linking
6879 information on function code symbol entries to their corresponding
6880 function descriptor symbol entries. */
6883 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6885 struct bfd_link_info
*info
;
6886 struct ppc_link_hash_table
*htab
;
6887 struct ppc_link_hash_entry
*fh
;
6888 struct ppc_link_hash_entry
*fdh
;
6889 bfd_boolean force_local
;
6891 fh
= (struct ppc_link_hash_entry
*) h
;
6892 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6898 if (fh
->elf
.root
.root
.string
[0] != '.'
6899 || fh
->elf
.root
.root
.string
[1] == '\0')
6903 htab
= ppc_hash_table (info
);
6907 /* Find the corresponding function descriptor symbol. */
6908 fdh
= lookup_fdh (fh
, htab
);
6910 /* Resolve undefined references to dot-symbols as the value
6911 in the function descriptor, if we have one in a regular object.
6912 This is to satisfy cases like ".quad .foo". Calls to functions
6913 in dynamic objects are handled elsewhere. */
6914 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
6915 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6916 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
6917 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6918 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6919 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6920 fdh
->elf
.root
.u
.def
.value
,
6921 &fh
->elf
.root
.u
.def
.section
,
6922 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6924 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6925 fh
->elf
.forced_local
= 1;
6926 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6927 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6930 if (!fh
->elf
.dynamic
)
6932 struct plt_entry
*ent
;
6934 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6935 if (ent
->plt
.refcount
> 0)
6941 /* Create a descriptor as undefined if necessary. */
6943 && !bfd_link_executable (info
)
6944 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6945 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6947 fdh
= make_fdh (info
, fh
);
6952 /* We can't support overriding of symbols on a fake descriptor. */
6955 && (fh
->elf
.root
.type
== bfd_link_hash_defined
6956 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
6957 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6959 /* Transfer dynamic linking information to the function descriptor. */
6962 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6963 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6964 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6965 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6966 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
6967 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
6968 || fh
->elf
.type
== STT_FUNC
6969 || fh
->elf
.type
== STT_GNU_IFUNC
);
6970 move_plt_plist (fh
, fdh
);
6972 if (!fdh
->elf
.forced_local
6973 && fh
->elf
.dynindx
!= -1)
6974 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6978 /* Now that the info is on the function descriptor, clear the
6979 function code sym info. Any function code syms for which we
6980 don't have a definition in a regular file, we force local.
6981 This prevents a shared library from exporting syms that have
6982 been imported from another library. Function code syms that
6983 are really in the library we must leave global to prevent the
6984 linker dragging in a definition from a static library. */
6985 force_local
= (!fh
->elf
.def_regular
6987 || !fdh
->elf
.def_regular
6988 || fdh
->elf
.forced_local
);
6989 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6994 static const struct sfpr_def_parms save_res_funcs
[] =
6996 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6997 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6998 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6999 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7000 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7001 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7002 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7003 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7004 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7005 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7006 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7007 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7010 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7011 this hook to a) provide some gcc support functions, and b) transfer
7012 dynamic linking information gathered so far on function code symbol
7013 entries, to their corresponding function descriptor symbol entries. */
7016 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7017 struct bfd_link_info
*info
)
7019 struct ppc_link_hash_table
*htab
;
7021 htab
= ppc_hash_table (info
);
7025 /* Provide any missing _save* and _rest* functions. */
7026 if (htab
->sfpr
!= NULL
)
7030 htab
->sfpr
->size
= 0;
7031 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7032 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7034 if (htab
->sfpr
->size
== 0)
7035 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7038 if (bfd_link_relocatable (info
))
7041 if (htab
->elf
.hgot
!= NULL
)
7043 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7044 /* Make .TOC. defined so as to prevent it being made dynamic.
7045 The wrong value here is fixed later in ppc64_elf_set_toc. */
7046 if (!htab
->elf
.hgot
->def_regular
7047 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7049 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7050 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7051 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7052 htab
->elf
.hgot
->def_regular
= 1;
7053 htab
->elf
.hgot
->root
.linker_def
= 1;
7055 htab
->elf
.hgot
->type
= STT_OBJECT
;
7056 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7060 if (htab
->need_func_desc_adj
)
7062 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7063 htab
->need_func_desc_adj
= 0;
7069 /* Find dynamic relocs for H that apply to read-only sections. */
7072 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7074 struct ppc_link_hash_entry
*eh
;
7075 struct elf_dyn_relocs
*p
;
7077 eh
= (struct ppc_link_hash_entry
*) h
;
7078 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7080 asection
*s
= p
->sec
->output_section
;
7082 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7088 /* Return true if we have dynamic relocs against H or any of its weak
7089 aliases, that apply to read-only sections. Cannot be used after
7090 size_dynamic_sections. */
7093 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7095 struct ppc_link_hash_entry
*eh
;
7097 eh
= (struct ppc_link_hash_entry
*) h
;
7100 if (readonly_dynrelocs (&eh
->elf
))
7102 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.u
.alias
;
7103 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7108 /* Return whether EH has pc-relative dynamic relocs. */
7111 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7113 struct elf_dyn_relocs
*p
;
7115 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7116 if (p
->pc_count
!= 0)
7121 /* Return true if a global entry stub will be created for H. Valid
7122 for ELFv2 before plt entries have been allocated. */
7125 global_entry_stub (struct elf_link_hash_entry
*h
)
7127 struct plt_entry
*pent
;
7129 if (!h
->pointer_equality_needed
7133 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7134 if (pent
->plt
.refcount
> 0
7135 && pent
->addend
== 0)
7141 /* Adjust a symbol defined by a dynamic object and referenced by a
7142 regular object. The current definition is in some section of the
7143 dynamic object, but we're not including those sections. We have to
7144 change the definition to something the rest of the link can
7148 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7149 struct elf_link_hash_entry
*h
)
7151 struct ppc_link_hash_table
*htab
;
7154 htab
= ppc_hash_table (info
);
7158 /* Deal with function syms. */
7159 if (h
->type
== STT_FUNC
7160 || h
->type
== STT_GNU_IFUNC
7163 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7164 || SYMBOL_CALLS_LOCAL (info
, h
)
7165 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7166 /* Discard dyn_relocs when non-pic if we've decided that a
7167 function symbol is local and not an ifunc. We keep dynamic
7168 relocs for ifuncs when local rather than always emitting a
7169 plt call stub for them and defining the symbol on the call
7170 stub. We can't do that for ELFv1 anyway (a function symbol
7171 is defined on a descriptor, not code) and it can be faster at
7172 run-time due to not needing to bounce through a stub. The
7173 dyn_relocs for ifuncs will be applied even in a static
7175 if (!bfd_link_pic (info
)
7176 && h
->type
!= STT_GNU_IFUNC
7178 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7180 /* Clear procedure linkage table information for any symbol that
7181 won't need a .plt entry. */
7182 struct plt_entry
*ent
;
7183 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7184 if (ent
->plt
.refcount
> 0)
7187 || (h
->type
!= STT_GNU_IFUNC
&& local
))
7189 h
->plt
.plist
= NULL
;
7191 h
->pointer_equality_needed
= 0;
7193 else if (abiversion (info
->output_bfd
) >= 2)
7195 /* Taking a function's address in a read/write section
7196 doesn't require us to define the function symbol in the
7197 executable on a global entry stub. A dynamic reloc can
7198 be used instead. The reason we prefer a few more dynamic
7199 relocs is that calling via a global entry stub costs a
7200 few more instructions, and pointer_equality_needed causes
7201 extra work in ld.so when resolving these symbols. */
7202 if (global_entry_stub (h
))
7204 if (!readonly_dynrelocs (h
))
7206 h
->pointer_equality_needed
= 0;
7207 /* If we haven't seen a branch reloc then we don't need
7210 h
->plt
.plist
= NULL
;
7212 else if (!bfd_link_pic (info
))
7213 /* We are going to be defining the function symbol on the
7214 plt stub, so no dyn_relocs needed when non-pic. */
7215 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7218 /* ELFv2 function symbols can't have copy relocs. */
7221 else if (!h
->needs_plt
7222 && !readonly_dynrelocs (h
))
7224 /* If we haven't seen a branch reloc then we don't need a
7226 h
->plt
.plist
= NULL
;
7227 h
->pointer_equality_needed
= 0;
7232 h
->plt
.plist
= NULL
;
7234 /* If this is a weak symbol, and there is a real definition, the
7235 processor independent code will have arranged for us to see the
7236 real definition first, and we can just use the same value. */
7237 if (h
->is_weakalias
)
7239 struct elf_link_hash_entry
*def
= weakdef (h
);
7240 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7241 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7242 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7243 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
7244 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
7245 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7249 /* If we are creating a shared library, we must presume that the
7250 only references to the symbol are via the global offset table.
7251 For such cases we need not do anything here; the relocations will
7252 be handled correctly by relocate_section. */
7253 if (bfd_link_pic (info
))
7256 /* If there are no references to this symbol that do not use the
7257 GOT, we don't need to generate a copy reloc. */
7258 if (!h
->non_got_ref
)
7261 /* Don't generate a copy reloc for symbols defined in the executable. */
7262 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7264 /* If -z nocopyreloc was given, don't generate them either. */
7265 || info
->nocopyreloc
7267 /* If we don't find any dynamic relocs in read-only sections, then
7268 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7269 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7271 /* Protected variables do not work with .dynbss. The copy in
7272 .dynbss won't be used by the shared library with the protected
7273 definition for the variable. Text relocations are preferable
7274 to an incorrect program. */
7275 || h
->protected_def
)
7278 if (h
->plt
.plist
!= NULL
)
7280 /* We should never get here, but unfortunately there are versions
7281 of gcc out there that improperly (for this ABI) put initialized
7282 function pointers, vtable refs and suchlike in read-only
7283 sections. Allow them to proceed, but warn that this might
7284 break at runtime. */
7285 info
->callbacks
->einfo
7286 (_("%P: copy reloc against `%pT' requires lazy plt linking; "
7287 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7288 h
->root
.root
.string
);
7291 /* This is a reference to a symbol defined by a dynamic object which
7292 is not a function. */
7294 /* We must allocate the symbol in our .dynbss section, which will
7295 become part of the .bss section of the executable. There will be
7296 an entry for this symbol in the .dynsym section. The dynamic
7297 object will contain position independent code, so all references
7298 from the dynamic object to this symbol will go through the global
7299 offset table. The dynamic linker will use the .dynsym entry to
7300 determine the address it must put in the global offset table, so
7301 both the dynamic object and the regular object will refer to the
7302 same memory location for the variable. */
7303 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7305 s
= htab
->elf
.sdynrelro
;
7306 srel
= htab
->elf
.sreldynrelro
;
7310 s
= htab
->elf
.sdynbss
;
7311 srel
= htab
->elf
.srelbss
;
7313 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7315 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7316 linker to copy the initial value out of the dynamic object
7317 and into the runtime process image. */
7318 srel
->size
+= sizeof (Elf64_External_Rela
);
7322 /* We no longer want dyn_relocs. */
7323 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7324 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7327 /* If given a function descriptor symbol, hide both the function code
7328 sym and the descriptor. */
7330 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7331 struct elf_link_hash_entry
*h
,
7332 bfd_boolean force_local
)
7334 struct ppc_link_hash_entry
*eh
;
7335 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7337 eh
= (struct ppc_link_hash_entry
*) h
;
7338 if (eh
->is_func_descriptor
)
7340 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7345 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7348 /* We aren't supposed to use alloca in BFD because on
7349 systems which do not have alloca the version in libiberty
7350 calls xmalloc, which might cause the program to crash
7351 when it runs out of memory. This function doesn't have a
7352 return status, so there's no way to gracefully return an
7353 error. So cheat. We know that string[-1] can be safely
7354 accessed; It's either a string in an ELF string table,
7355 or allocated in an objalloc structure. */
7357 p
= eh
->elf
.root
.root
.string
- 1;
7360 fh
= (struct ppc_link_hash_entry
*)
7361 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7364 /* Unfortunately, if it so happens that the string we were
7365 looking for was allocated immediately before this string,
7366 then we overwrote the string terminator. That's the only
7367 reason the lookup should fail. */
7370 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7371 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7373 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7374 fh
= (struct ppc_link_hash_entry
*)
7375 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7384 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7389 get_sym_h (struct elf_link_hash_entry
**hp
,
7390 Elf_Internal_Sym
**symp
,
7392 unsigned char **tls_maskp
,
7393 Elf_Internal_Sym
**locsymsp
,
7394 unsigned long r_symndx
,
7397 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7399 if (r_symndx
>= symtab_hdr
->sh_info
)
7401 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7402 struct elf_link_hash_entry
*h
;
7404 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7405 h
= elf_follow_link (h
);
7413 if (symsecp
!= NULL
)
7415 asection
*symsec
= NULL
;
7416 if (h
->root
.type
== bfd_link_hash_defined
7417 || h
->root
.type
== bfd_link_hash_defweak
)
7418 symsec
= h
->root
.u
.def
.section
;
7422 if (tls_maskp
!= NULL
)
7424 struct ppc_link_hash_entry
*eh
;
7426 eh
= (struct ppc_link_hash_entry
*) h
;
7427 *tls_maskp
= &eh
->tls_mask
;
7432 Elf_Internal_Sym
*sym
;
7433 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7435 if (locsyms
== NULL
)
7437 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7438 if (locsyms
== NULL
)
7439 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7440 symtab_hdr
->sh_info
,
7441 0, NULL
, NULL
, NULL
);
7442 if (locsyms
== NULL
)
7444 *locsymsp
= locsyms
;
7446 sym
= locsyms
+ r_symndx
;
7454 if (symsecp
!= NULL
)
7455 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7457 if (tls_maskp
!= NULL
)
7459 struct got_entry
**lgot_ents
;
7460 unsigned char *tls_mask
;
7463 lgot_ents
= elf_local_got_ents (ibfd
);
7464 if (lgot_ents
!= NULL
)
7466 struct plt_entry
**local_plt
= (struct plt_entry
**)
7467 (lgot_ents
+ symtab_hdr
->sh_info
);
7468 unsigned char *lgot_masks
= (unsigned char *)
7469 (local_plt
+ symtab_hdr
->sh_info
);
7470 tls_mask
= &lgot_masks
[r_symndx
];
7472 *tls_maskp
= tls_mask
;
7478 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7479 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7480 type suitable for optimization, and 1 otherwise. */
7483 get_tls_mask (unsigned char **tls_maskp
,
7484 unsigned long *toc_symndx
,
7485 bfd_vma
*toc_addend
,
7486 Elf_Internal_Sym
**locsymsp
,
7487 const Elf_Internal_Rela
*rel
,
7490 unsigned long r_symndx
;
7492 struct elf_link_hash_entry
*h
;
7493 Elf_Internal_Sym
*sym
;
7497 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7498 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7501 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7503 || ppc64_elf_section_data (sec
) == NULL
7504 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7507 /* Look inside a TOC section too. */
7510 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7511 off
= h
->root
.u
.def
.value
;
7514 off
= sym
->st_value
;
7515 off
+= rel
->r_addend
;
7516 BFD_ASSERT (off
% 8 == 0);
7517 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7518 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7519 if (toc_symndx
!= NULL
)
7520 *toc_symndx
= r_symndx
;
7521 if (toc_addend
!= NULL
)
7522 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7523 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7525 if ((h
== NULL
|| is_static_defined (h
))
7526 && (next_r
== -1 || next_r
== -2))
7531 /* Find (or create) an entry in the tocsave hash table. */
7533 static struct tocsave_entry
*
7534 tocsave_find (struct ppc_link_hash_table
*htab
,
7535 enum insert_option insert
,
7536 Elf_Internal_Sym
**local_syms
,
7537 const Elf_Internal_Rela
*irela
,
7540 unsigned long r_indx
;
7541 struct elf_link_hash_entry
*h
;
7542 Elf_Internal_Sym
*sym
;
7543 struct tocsave_entry ent
, *p
;
7545 struct tocsave_entry
**slot
;
7547 r_indx
= ELF64_R_SYM (irela
->r_info
);
7548 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7550 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7553 (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7558 ent
.offset
= h
->root
.u
.def
.value
;
7560 ent
.offset
= sym
->st_value
;
7561 ent
.offset
+= irela
->r_addend
;
7563 hash
= tocsave_htab_hash (&ent
);
7564 slot
= ((struct tocsave_entry
**)
7565 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7571 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7580 /* Adjust all global syms defined in opd sections. In gcc generated
7581 code for the old ABI, these will already have been done. */
7584 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7586 struct ppc_link_hash_entry
*eh
;
7588 struct _opd_sec_data
*opd
;
7590 if (h
->root
.type
== bfd_link_hash_indirect
)
7593 if (h
->root
.type
!= bfd_link_hash_defined
7594 && h
->root
.type
!= bfd_link_hash_defweak
)
7597 eh
= (struct ppc_link_hash_entry
*) h
;
7598 if (eh
->adjust_done
)
7601 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7602 opd
= get_opd_info (sym_sec
);
7603 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7605 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7608 /* This entry has been deleted. */
7609 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7612 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7613 if (discarded_section (dsec
))
7615 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7619 eh
->elf
.root
.u
.def
.value
= 0;
7620 eh
->elf
.root
.u
.def
.section
= dsec
;
7623 eh
->elf
.root
.u
.def
.value
+= adjust
;
7624 eh
->adjust_done
= 1;
7629 /* Handles decrementing dynamic reloc counts for the reloc specified by
7630 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7631 have already been determined. */
7634 dec_dynrel_count (bfd_vma r_info
,
7636 struct bfd_link_info
*info
,
7637 Elf_Internal_Sym
**local_syms
,
7638 struct elf_link_hash_entry
*h
,
7639 Elf_Internal_Sym
*sym
)
7641 enum elf_ppc64_reloc_type r_type
;
7642 asection
*sym_sec
= NULL
;
7644 /* Can this reloc be dynamic? This switch, and later tests here
7645 should be kept in sync with the code in check_relocs. */
7646 r_type
= ELF64_R_TYPE (r_info
);
7652 case R_PPC64_TPREL16
:
7653 case R_PPC64_TPREL16_LO
:
7654 case R_PPC64_TPREL16_HI
:
7655 case R_PPC64_TPREL16_HA
:
7656 case R_PPC64_TPREL16_DS
:
7657 case R_PPC64_TPREL16_LO_DS
:
7658 case R_PPC64_TPREL16_HIGH
:
7659 case R_PPC64_TPREL16_HIGHA
:
7660 case R_PPC64_TPREL16_HIGHER
:
7661 case R_PPC64_TPREL16_HIGHERA
:
7662 case R_PPC64_TPREL16_HIGHEST
:
7663 case R_PPC64_TPREL16_HIGHESTA
:
7664 case R_PPC64_TPREL64
:
7665 case R_PPC64_DTPMOD64
:
7666 case R_PPC64_DTPREL64
:
7667 case R_PPC64_ADDR64
:
7671 case R_PPC64_ADDR14
:
7672 case R_PPC64_ADDR14_BRNTAKEN
:
7673 case R_PPC64_ADDR14_BRTAKEN
:
7674 case R_PPC64_ADDR16
:
7675 case R_PPC64_ADDR16_DS
:
7676 case R_PPC64_ADDR16_HA
:
7677 case R_PPC64_ADDR16_HI
:
7678 case R_PPC64_ADDR16_HIGH
:
7679 case R_PPC64_ADDR16_HIGHA
:
7680 case R_PPC64_ADDR16_HIGHER
:
7681 case R_PPC64_ADDR16_HIGHERA
:
7682 case R_PPC64_ADDR16_HIGHEST
:
7683 case R_PPC64_ADDR16_HIGHESTA
:
7684 case R_PPC64_ADDR16_LO
:
7685 case R_PPC64_ADDR16_LO_DS
:
7686 case R_PPC64_ADDR24
:
7687 case R_PPC64_ADDR32
:
7688 case R_PPC64_UADDR16
:
7689 case R_PPC64_UADDR32
:
7690 case R_PPC64_UADDR64
:
7695 if (local_syms
!= NULL
)
7697 unsigned long r_symndx
;
7698 bfd
*ibfd
= sec
->owner
;
7700 r_symndx
= ELF64_R_SYM (r_info
);
7701 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7705 if ((bfd_link_pic (info
)
7706 && (must_be_dyn_reloc (info
, r_type
)
7708 && (!SYMBOLIC_BIND (info
, h
)
7709 || h
->root
.type
== bfd_link_hash_defweak
7710 || !h
->def_regular
))))
7711 || (ELIMINATE_COPY_RELOCS
7712 && !bfd_link_pic (info
)
7714 && (h
->root
.type
== bfd_link_hash_defweak
7715 || !h
->def_regular
)))
7722 struct elf_dyn_relocs
*p
;
7723 struct elf_dyn_relocs
**pp
;
7724 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7726 /* elf_gc_sweep may have already removed all dyn relocs associated
7727 with local syms for a given section. Also, symbol flags are
7728 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7729 report a dynreloc miscount. */
7730 if (*pp
== NULL
&& info
->gc_sections
)
7733 while ((p
= *pp
) != NULL
)
7737 if (!must_be_dyn_reloc (info
, r_type
))
7749 struct ppc_dyn_relocs
*p
;
7750 struct ppc_dyn_relocs
**pp
;
7752 bfd_boolean is_ifunc
;
7754 if (local_syms
== NULL
)
7755 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7756 if (sym_sec
== NULL
)
7759 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7760 pp
= (struct ppc_dyn_relocs
**) vpp
;
7762 if (*pp
== NULL
&& info
->gc_sections
)
7765 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7766 while ((p
= *pp
) != NULL
)
7768 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7779 /* xgettext:c-format */
7780 _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"),
7782 bfd_set_error (bfd_error_bad_value
);
7786 /* Remove unused Official Procedure Descriptor entries. Currently we
7787 only remove those associated with functions in discarded link-once
7788 sections, or weakly defined functions that have been overridden. It
7789 would be possible to remove many more entries for statically linked
7793 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7796 bfd_boolean some_edited
= FALSE
;
7797 asection
*need_pad
= NULL
;
7798 struct ppc_link_hash_table
*htab
;
7800 htab
= ppc_hash_table (info
);
7804 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7807 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7808 Elf_Internal_Shdr
*symtab_hdr
;
7809 Elf_Internal_Sym
*local_syms
;
7810 struct _opd_sec_data
*opd
;
7811 bfd_boolean need_edit
, add_aux_fields
, broken
;
7812 bfd_size_type cnt_16b
= 0;
7814 if (!is_ppc64_elf (ibfd
))
7817 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7818 if (sec
== NULL
|| sec
->size
== 0)
7821 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7824 if (sec
->output_section
== bfd_abs_section_ptr
)
7827 /* Look through the section relocs. */
7828 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7832 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7834 /* Read the relocations. */
7835 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7837 if (relstart
== NULL
)
7840 /* First run through the relocs to check they are sane, and to
7841 determine whether we need to edit this opd section. */
7845 relend
= relstart
+ sec
->reloc_count
;
7846 for (rel
= relstart
; rel
< relend
; )
7848 enum elf_ppc64_reloc_type r_type
;
7849 unsigned long r_symndx
;
7851 struct elf_link_hash_entry
*h
;
7852 Elf_Internal_Sym
*sym
;
7855 /* .opd contains an array of 16 or 24 byte entries. We're
7856 only interested in the reloc pointing to a function entry
7858 offset
= rel
->r_offset
;
7859 if (rel
+ 1 == relend
7860 || rel
[1].r_offset
!= offset
+ 8)
7862 /* If someone messes with .opd alignment then after a
7863 "ld -r" we might have padding in the middle of .opd.
7864 Also, there's nothing to prevent someone putting
7865 something silly in .opd with the assembler. No .opd
7866 optimization for them! */
7869 (_("%pB: .opd is not a regular array of opd entries"), ibfd
);
7874 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7875 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7878 /* xgettext:c-format */
7879 (_("%pB: unexpected reloc type %u in .opd section"),
7885 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7886 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7890 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7892 const char *sym_name
;
7894 sym_name
= h
->root
.root
.string
;
7896 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7900 /* xgettext:c-format */
7901 (_("%pB: undefined sym `%s' in .opd section"),
7907 /* opd entries are always for functions defined in the
7908 current input bfd. If the symbol isn't defined in the
7909 input bfd, then we won't be using the function in this
7910 bfd; It must be defined in a linkonce section in another
7911 bfd, or is weak. It's also possible that we are
7912 discarding the function due to a linker script /DISCARD/,
7913 which we test for via the output_section. */
7914 if (sym_sec
->owner
!= ibfd
7915 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7919 if (rel
+ 1 == relend
7920 || (rel
+ 2 < relend
7921 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7926 if (sec
->size
== offset
+ 24)
7931 if (sec
->size
== offset
+ 16)
7938 else if (rel
+ 1 < relend
7939 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7940 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7942 if (rel
[0].r_offset
== offset
+ 16)
7944 else if (rel
[0].r_offset
!= offset
+ 24)
7951 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7953 if (!broken
&& (need_edit
|| add_aux_fields
))
7955 Elf_Internal_Rela
*write_rel
;
7956 Elf_Internal_Shdr
*rel_hdr
;
7957 bfd_byte
*rptr
, *wptr
;
7958 bfd_byte
*new_contents
;
7961 new_contents
= NULL
;
7962 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7963 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7964 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7965 if (opd
->adjust
== NULL
)
7968 /* This seems a waste of time as input .opd sections are all
7969 zeros as generated by gcc, but I suppose there's no reason
7970 this will always be so. We might start putting something in
7971 the third word of .opd entries. */
7972 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7975 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7980 if (local_syms
!= NULL
7981 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7983 if (elf_section_data (sec
)->relocs
!= relstart
)
7987 sec
->contents
= loc
;
7988 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7991 elf_section_data (sec
)->relocs
= relstart
;
7993 new_contents
= sec
->contents
;
7996 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7997 if (new_contents
== NULL
)
8001 wptr
= new_contents
;
8002 rptr
= sec
->contents
;
8003 write_rel
= relstart
;
8004 for (rel
= relstart
; rel
< relend
; )
8006 unsigned long r_symndx
;
8008 struct elf_link_hash_entry
*h
;
8009 struct ppc_link_hash_entry
*fdh
= NULL
;
8010 Elf_Internal_Sym
*sym
;
8012 Elf_Internal_Rela
*next_rel
;
8015 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8016 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8021 if (next_rel
+ 1 == relend
8022 || (next_rel
+ 2 < relend
8023 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8026 /* See if the .opd entry is full 24 byte or
8027 16 byte (with fd_aux entry overlapped with next
8030 if (next_rel
== relend
)
8032 if (sec
->size
== rel
->r_offset
+ 16)
8035 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8039 && h
->root
.root
.string
[0] == '.')
8041 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8044 fdh
= ppc_follow_link (fdh
);
8045 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8046 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8051 skip
= (sym_sec
->owner
!= ibfd
8052 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8055 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8057 /* Arrange for the function descriptor sym
8059 fdh
->elf
.root
.u
.def
.value
= 0;
8060 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8062 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8064 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8069 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8073 if (++rel
== next_rel
)
8076 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8077 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8084 /* We'll be keeping this opd entry. */
8089 /* Redefine the function descriptor symbol to
8090 this location in the opd section. It is
8091 necessary to update the value here rather
8092 than using an array of adjustments as we do
8093 for local symbols, because various places
8094 in the generic ELF code use the value
8095 stored in u.def.value. */
8096 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8097 fdh
->adjust_done
= 1;
8100 /* Local syms are a bit tricky. We could
8101 tweak them as they can be cached, but
8102 we'd need to look through the local syms
8103 for the function descriptor sym which we
8104 don't have at the moment. So keep an
8105 array of adjustments. */
8106 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8107 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8110 memcpy (wptr
, rptr
, opd_ent_size
);
8111 wptr
+= opd_ent_size
;
8112 if (add_aux_fields
&& opd_ent_size
== 16)
8114 memset (wptr
, '\0', 8);
8118 /* We need to adjust any reloc offsets to point to the
8120 for ( ; rel
!= next_rel
; ++rel
)
8122 rel
->r_offset
+= adjust
;
8123 if (write_rel
!= rel
)
8124 memcpy (write_rel
, rel
, sizeof (*rel
));
8129 rptr
+= opd_ent_size
;
8132 sec
->size
= wptr
- new_contents
;
8133 sec
->reloc_count
= write_rel
- relstart
;
8136 free (sec
->contents
);
8137 sec
->contents
= new_contents
;
8140 /* Fudge the header size too, as this is used later in
8141 elf_bfd_final_link if we are emitting relocs. */
8142 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8143 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8146 else if (elf_section_data (sec
)->relocs
!= relstart
)
8149 if (local_syms
!= NULL
8150 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8152 if (!info
->keep_memory
)
8155 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8160 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8162 /* If we are doing a final link and the last .opd entry is just 16 byte
8163 long, add a 8 byte padding after it. */
8164 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8168 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8170 BFD_ASSERT (need_pad
->size
> 0);
8172 p
= bfd_malloc (need_pad
->size
+ 8);
8176 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8177 p
, 0, need_pad
->size
))
8180 need_pad
->contents
= p
;
8181 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8185 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8189 need_pad
->contents
= p
;
8192 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8193 need_pad
->size
+= 8;
8199 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8202 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8204 struct ppc_link_hash_table
*htab
;
8206 htab
= ppc_hash_table (info
);
8210 if (abiversion (info
->output_bfd
) == 1)
8213 if (htab
->params
->no_multi_toc
)
8214 htab
->do_multi_toc
= 0;
8215 else if (!htab
->do_multi_toc
)
8216 htab
->params
->no_multi_toc
= 1;
8218 /* Default to --no-plt-localentry, as this option can cause problems
8219 with symbol interposition. For example, glibc libpthread.so and
8220 libc.so duplicate many pthread symbols, with a fallback
8221 implementation in libc.so. In some cases the fallback does more
8222 work than the pthread implementation. __pthread_condattr_destroy
8223 is one such symbol: the libpthread.so implementation is
8224 localentry:0 while the libc.so implementation is localentry:8.
8225 An app that "cleverly" uses dlopen to only load necessary
8226 libraries at runtime may omit loading libpthread.so when not
8227 running multi-threaded, which then results in the libc.so
8228 fallback symbols being used and ld.so complaining. Now there
8229 are workarounds in ld (see non_zero_localentry) to detect the
8230 pthread situation, but that may not be the only case where
8231 --plt-localentry can cause trouble. */
8232 if (htab
->params
->plt_localentry0
< 0)
8233 htab
->params
->plt_localentry0
= 0;
8234 if (htab
->params
->plt_localentry0
8235 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8236 FALSE
, FALSE
, FALSE
) == NULL
)
8238 (_("warning: --plt-localentry is especially dangerous without "
8239 "ld.so support to detect ABI violations"));
8241 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8242 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8243 FALSE
, FALSE
, TRUE
));
8244 /* Move dynamic linking info to the function descriptor sym. */
8245 if (htab
->tls_get_addr
!= NULL
)
8246 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8247 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8248 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8249 FALSE
, FALSE
, TRUE
));
8250 if (htab
->params
->tls_get_addr_opt
)
8252 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8254 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8255 FALSE
, FALSE
, TRUE
);
8257 func_desc_adjust (opt
, info
);
8258 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8259 FALSE
, FALSE
, TRUE
);
8261 && (opt_fd
->root
.type
== bfd_link_hash_defined
8262 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8264 /* If glibc supports an optimized __tls_get_addr call stub,
8265 signalled by the presence of __tls_get_addr_opt, and we'll
8266 be calling __tls_get_addr via a plt call stub, then
8267 make __tls_get_addr point to __tls_get_addr_opt. */
8268 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8269 if (htab
->elf
.dynamic_sections_created
8271 && (tga_fd
->type
== STT_FUNC
8272 || tga_fd
->needs_plt
)
8273 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8274 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8276 struct plt_entry
*ent
;
8278 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8279 if (ent
->plt
.refcount
> 0)
8283 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8284 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8285 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8287 if (opt_fd
->dynindx
!= -1)
8289 /* Use __tls_get_addr_opt in dynamic relocations. */
8290 opt_fd
->dynindx
= -1;
8291 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8292 opt_fd
->dynstr_index
);
8293 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8296 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8297 tga
= &htab
->tls_get_addr
->elf
;
8298 if (opt
!= NULL
&& tga
!= NULL
)
8300 tga
->root
.type
= bfd_link_hash_indirect
;
8301 tga
->root
.u
.i
.link
= &opt
->root
;
8302 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8304 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8306 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8308 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8309 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8310 if (htab
->tls_get_addr
!= NULL
)
8312 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8313 htab
->tls_get_addr
->is_func
= 1;
8318 else if (htab
->params
->tls_get_addr_opt
< 0)
8319 htab
->params
->tls_get_addr_opt
= 0;
8321 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8324 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8328 branch_reloc_hash_match (const bfd
*ibfd
,
8329 const Elf_Internal_Rela
*rel
,
8330 const struct ppc_link_hash_entry
*hash1
,
8331 const struct ppc_link_hash_entry
*hash2
)
8333 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8334 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8335 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8337 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8339 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8340 struct elf_link_hash_entry
*h
;
8342 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8343 h
= elf_follow_link (h
);
8344 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8350 /* Run through all the TLS relocs looking for optimization
8351 opportunities. The linker has been hacked (see ppc64elf.em) to do
8352 a preliminary section layout so that we know the TLS segment
8353 offsets. We can't optimize earlier because some optimizations need
8354 to know the tp offset, and we need to optimize before allocating
8355 dynamic relocations. */
8358 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8362 struct ppc_link_hash_table
*htab
;
8363 unsigned char *toc_ref
;
8366 if (!bfd_link_executable (info
))
8369 htab
= ppc_hash_table (info
);
8373 /* Make two passes over the relocs. On the first pass, mark toc
8374 entries involved with tls relocs, and check that tls relocs
8375 involved in setting up a tls_get_addr call are indeed followed by
8376 such a call. If they are not, we can't do any tls optimization.
8377 On the second pass twiddle tls_mask flags to notify
8378 relocate_section that optimization can be done, and adjust got
8379 and plt refcounts. */
8381 for (pass
= 0; pass
< 2; ++pass
)
8382 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8384 Elf_Internal_Sym
*locsyms
= NULL
;
8385 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8387 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8388 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8390 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8391 bfd_boolean found_tls_get_addr_arg
= 0;
8393 /* Read the relocations. */
8394 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8396 if (relstart
== NULL
)
8402 relend
= relstart
+ sec
->reloc_count
;
8403 for (rel
= relstart
; rel
< relend
; rel
++)
8405 enum elf_ppc64_reloc_type r_type
;
8406 unsigned long r_symndx
;
8407 struct elf_link_hash_entry
*h
;
8408 Elf_Internal_Sym
*sym
;
8410 unsigned char *tls_mask
;
8411 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8413 bfd_boolean ok_tprel
, is_local
;
8414 long toc_ref_index
= 0;
8415 int expecting_tls_get_addr
= 0;
8416 bfd_boolean ret
= FALSE
;
8418 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8419 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8423 if (elf_section_data (sec
)->relocs
!= relstart
)
8425 if (toc_ref
!= NULL
)
8428 && (elf_symtab_hdr (ibfd
).contents
8429 != (unsigned char *) locsyms
))
8436 if (h
->root
.type
== bfd_link_hash_defined
8437 || h
->root
.type
== bfd_link_hash_defweak
)
8438 value
= h
->root
.u
.def
.value
;
8439 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8443 found_tls_get_addr_arg
= 0;
8448 /* Symbols referenced by TLS relocs must be of type
8449 STT_TLS. So no need for .opd local sym adjust. */
8450 value
= sym
->st_value
;
8459 && h
->root
.type
== bfd_link_hash_undefweak
)
8461 else if (sym_sec
!= NULL
8462 && sym_sec
->output_section
!= NULL
)
8464 value
+= sym_sec
->output_offset
;
8465 value
+= sym_sec
->output_section
->vma
;
8466 value
-= htab
->elf
.tls_sec
->vma
;
8467 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8468 < (bfd_vma
) 1 << 32);
8472 r_type
= ELF64_R_TYPE (rel
->r_info
);
8473 /* If this section has old-style __tls_get_addr calls
8474 without marker relocs, then check that each
8475 __tls_get_addr call reloc is preceded by a reloc
8476 that conceivably belongs to the __tls_get_addr arg
8477 setup insn. If we don't find matching arg setup
8478 relocs, don't do any tls optimization. */
8480 && sec
->has_tls_get_addr_call
8482 && (h
== &htab
->tls_get_addr
->elf
8483 || h
== &htab
->tls_get_addr_fd
->elf
)
8484 && !found_tls_get_addr_arg
8485 && is_branch_reloc (r_type
))
8487 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8488 "TLS optimization disabled\n"),
8489 ibfd
, sec
, rel
->r_offset
);
8494 found_tls_get_addr_arg
= 0;
8497 case R_PPC64_GOT_TLSLD16
:
8498 case R_PPC64_GOT_TLSLD16_LO
:
8499 expecting_tls_get_addr
= 1;
8500 found_tls_get_addr_arg
= 1;
8503 case R_PPC64_GOT_TLSLD16_HI
:
8504 case R_PPC64_GOT_TLSLD16_HA
:
8505 /* These relocs should never be against a symbol
8506 defined in a shared lib. Leave them alone if
8507 that turns out to be the case. */
8514 tls_type
= TLS_TLS
| TLS_LD
;
8517 case R_PPC64_GOT_TLSGD16
:
8518 case R_PPC64_GOT_TLSGD16_LO
:
8519 expecting_tls_get_addr
= 1;
8520 found_tls_get_addr_arg
= 1;
8523 case R_PPC64_GOT_TLSGD16_HI
:
8524 case R_PPC64_GOT_TLSGD16_HA
:
8530 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8532 tls_type
= TLS_TLS
| TLS_GD
;
8535 case R_PPC64_GOT_TPREL16_DS
:
8536 case R_PPC64_GOT_TPREL16_LO_DS
:
8537 case R_PPC64_GOT_TPREL16_HI
:
8538 case R_PPC64_GOT_TPREL16_HA
:
8543 tls_clear
= TLS_TPREL
;
8544 tls_type
= TLS_TLS
| TLS_TPREL
;
8551 found_tls_get_addr_arg
= 1;
8556 case R_PPC64_TOC16_LO
:
8557 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8560 /* Mark this toc entry as referenced by a TLS
8561 code sequence. We can do that now in the
8562 case of R_PPC64_TLS, and after checking for
8563 tls_get_addr for the TOC16 relocs. */
8564 if (toc_ref
== NULL
)
8565 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8566 if (toc_ref
== NULL
)
8570 value
= h
->root
.u
.def
.value
;
8572 value
= sym
->st_value
;
8573 value
+= rel
->r_addend
;
8576 BFD_ASSERT (value
< toc
->size
8577 && toc
->output_offset
% 8 == 0);
8578 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8579 if (r_type
== R_PPC64_TLS
8580 || r_type
== R_PPC64_TLSGD
8581 || r_type
== R_PPC64_TLSLD
)
8583 toc_ref
[toc_ref_index
] = 1;
8587 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8592 expecting_tls_get_addr
= 2;
8595 case R_PPC64_TPREL64
:
8599 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8604 tls_set
= TLS_EXPLICIT
;
8605 tls_clear
= TLS_TPREL
;
8610 case R_PPC64_DTPMOD64
:
8614 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8616 if (rel
+ 1 < relend
8618 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8619 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8623 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8626 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8635 tls_set
= TLS_EXPLICIT
;
8646 if (!expecting_tls_get_addr
8647 || !sec
->has_tls_get_addr_call
)
8650 if (rel
+ 1 < relend
8651 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8653 htab
->tls_get_addr_fd
))
8655 if (expecting_tls_get_addr
== 2)
8657 /* Check for toc tls entries. */
8658 unsigned char *toc_tls
;
8661 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8666 if (toc_tls
!= NULL
)
8668 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8669 found_tls_get_addr_arg
= 1;
8671 toc_ref
[toc_ref_index
] = 1;
8677 if (expecting_tls_get_addr
!= 1)
8680 /* Uh oh, we didn't find the expected call. We
8681 could just mark this symbol to exclude it
8682 from tls optimization but it's safer to skip
8683 the entire optimization. */
8684 /* xgettext:c-format */
8685 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8686 "TLS optimization disabled\n"),
8687 ibfd
, sec
, rel
->r_offset
);
8692 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8694 struct plt_entry
*ent
;
8695 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8698 if (ent
->addend
== 0)
8700 if (ent
->plt
.refcount
> 0)
8702 ent
->plt
.refcount
-= 1;
8703 expecting_tls_get_addr
= 0;
8709 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8711 struct plt_entry
*ent
;
8712 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8715 if (ent
->addend
== 0)
8717 if (ent
->plt
.refcount
> 0)
8718 ent
->plt
.refcount
-= 1;
8726 if ((tls_set
& TLS_EXPLICIT
) == 0)
8728 struct got_entry
*ent
;
8730 /* Adjust got entry for this reloc. */
8734 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8736 for (; ent
!= NULL
; ent
= ent
->next
)
8737 if (ent
->addend
== rel
->r_addend
8738 && ent
->owner
== ibfd
8739 && ent
->tls_type
== tls_type
)
8746 /* We managed to get rid of a got entry. */
8747 if (ent
->got
.refcount
> 0)
8748 ent
->got
.refcount
-= 1;
8753 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8754 we'll lose one or two dyn relocs. */
8755 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8759 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8761 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8767 *tls_mask
|= tls_set
;
8768 *tls_mask
&= ~tls_clear
;
8771 if (elf_section_data (sec
)->relocs
!= relstart
)
8776 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8778 if (!info
->keep_memory
)
8781 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8785 if (toc_ref
!= NULL
)
8787 htab
->do_tls_opt
= 1;
8791 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8792 the values of any global symbols in a toc section that has been
8793 edited. Globals in toc sections should be a rarity, so this function
8794 sets a flag if any are found in toc sections other than the one just
8795 edited, so that further hash table traversals can be avoided. */
8797 struct adjust_toc_info
8800 unsigned long *skip
;
8801 bfd_boolean global_toc_syms
;
8804 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8807 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8809 struct ppc_link_hash_entry
*eh
;
8810 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8813 if (h
->root
.type
!= bfd_link_hash_defined
8814 && h
->root
.type
!= bfd_link_hash_defweak
)
8817 eh
= (struct ppc_link_hash_entry
*) h
;
8818 if (eh
->adjust_done
)
8821 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8823 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8824 i
= toc_inf
->toc
->rawsize
>> 3;
8826 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8828 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8831 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8834 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8835 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8838 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8839 eh
->adjust_done
= 1;
8841 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8842 toc_inf
->global_toc_syms
= TRUE
;
8847 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8848 on a _LO variety toc/got reloc. */
8851 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8853 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8854 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8855 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8856 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8857 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8858 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8859 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8860 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8861 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8862 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8863 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8864 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8865 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8866 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8867 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8868 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8869 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8870 /* Exclude lfqu by testing reloc. If relocs are ever
8871 defined for the reduced D field in psq_lu then those
8872 will need testing too. */
8873 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8874 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8876 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8877 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8878 /* Exclude stfqu. psq_stu as above for psq_lu. */
8879 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8880 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8881 && (insn
& 1) == 0));
8884 /* Examine all relocs referencing .toc sections in order to remove
8885 unused .toc entries. */
8888 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8891 struct adjust_toc_info toc_inf
;
8892 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8894 htab
->do_toc_opt
= 1;
8895 toc_inf
.global_toc_syms
= TRUE
;
8896 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8898 asection
*toc
, *sec
;
8899 Elf_Internal_Shdr
*symtab_hdr
;
8900 Elf_Internal_Sym
*local_syms
;
8901 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8902 unsigned long *skip
, *drop
;
8903 unsigned char *used
;
8904 unsigned char *keep
, last
, some_unused
;
8906 if (!is_ppc64_elf (ibfd
))
8909 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8912 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8913 || discarded_section (toc
))
8918 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8920 /* Look at sections dropped from the final link. */
8923 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8925 if (sec
->reloc_count
== 0
8926 || !discarded_section (sec
)
8927 || get_opd_info (sec
)
8928 || (sec
->flags
& SEC_ALLOC
) == 0
8929 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8932 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8933 if (relstart
== NULL
)
8936 /* Run through the relocs to see which toc entries might be
8938 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8940 enum elf_ppc64_reloc_type r_type
;
8941 unsigned long r_symndx
;
8943 struct elf_link_hash_entry
*h
;
8944 Elf_Internal_Sym
*sym
;
8947 r_type
= ELF64_R_TYPE (rel
->r_info
);
8954 case R_PPC64_TOC16_LO
:
8955 case R_PPC64_TOC16_HI
:
8956 case R_PPC64_TOC16_HA
:
8957 case R_PPC64_TOC16_DS
:
8958 case R_PPC64_TOC16_LO_DS
:
8962 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8963 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8971 val
= h
->root
.u
.def
.value
;
8973 val
= sym
->st_value
;
8974 val
+= rel
->r_addend
;
8976 if (val
>= toc
->size
)
8979 /* Anything in the toc ought to be aligned to 8 bytes.
8980 If not, don't mark as unused. */
8986 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8991 skip
[val
>> 3] = ref_from_discarded
;
8994 if (elf_section_data (sec
)->relocs
!= relstart
)
8998 /* For largetoc loads of address constants, we can convert
8999 . addis rx,2,addr@got@ha
9000 . ld ry,addr@got@l(rx)
9002 . addis rx,2,addr@toc@ha
9003 . addi ry,rx,addr@toc@l
9004 when addr is within 2G of the toc pointer. This then means
9005 that the word storing "addr" in the toc is no longer needed. */
9007 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9008 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9009 && toc
->reloc_count
!= 0)
9011 /* Read toc relocs. */
9012 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9014 if (toc_relocs
== NULL
)
9017 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9019 enum elf_ppc64_reloc_type r_type
;
9020 unsigned long r_symndx
;
9022 struct elf_link_hash_entry
*h
;
9023 Elf_Internal_Sym
*sym
;
9026 r_type
= ELF64_R_TYPE (rel
->r_info
);
9027 if (r_type
!= R_PPC64_ADDR64
)
9030 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9031 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9036 || sym_sec
->output_section
== NULL
9037 || discarded_section (sym_sec
))
9040 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9045 if (h
->type
== STT_GNU_IFUNC
)
9047 val
= h
->root
.u
.def
.value
;
9051 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9053 val
= sym
->st_value
;
9055 val
+= rel
->r_addend
;
9056 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9058 /* We don't yet know the exact toc pointer value, but we
9059 know it will be somewhere in the toc section. Don't
9060 optimize if the difference from any possible toc
9061 pointer is outside [ff..f80008000, 7fff7fff]. */
9062 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9063 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9066 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9067 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9072 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9077 skip
[rel
->r_offset
>> 3]
9078 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9085 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9089 if (local_syms
!= NULL
9090 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9094 && elf_section_data (sec
)->relocs
!= relstart
)
9096 if (toc_relocs
!= NULL
9097 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9104 /* Now check all kept sections that might reference the toc.
9105 Check the toc itself last. */
9106 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9109 sec
= (sec
== toc
? NULL
9110 : sec
->next
== NULL
? toc
9111 : sec
->next
== toc
&& toc
->next
? toc
->next
9116 if (sec
->reloc_count
== 0
9117 || discarded_section (sec
)
9118 || get_opd_info (sec
)
9119 || (sec
->flags
& SEC_ALLOC
) == 0
9120 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9123 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9125 if (relstart
== NULL
)
9131 /* Mark toc entries referenced as used. */
9135 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9137 enum elf_ppc64_reloc_type r_type
;
9138 unsigned long r_symndx
;
9140 struct elf_link_hash_entry
*h
;
9141 Elf_Internal_Sym
*sym
;
9143 enum {no_check
, check_lo
, check_ha
} insn_check
;
9145 r_type
= ELF64_R_TYPE (rel
->r_info
);
9149 insn_check
= no_check
;
9152 case R_PPC64_GOT_TLSLD16_HA
:
9153 case R_PPC64_GOT_TLSGD16_HA
:
9154 case R_PPC64_GOT_TPREL16_HA
:
9155 case R_PPC64_GOT_DTPREL16_HA
:
9156 case R_PPC64_GOT16_HA
:
9157 case R_PPC64_TOC16_HA
:
9158 insn_check
= check_ha
;
9161 case R_PPC64_GOT_TLSLD16_LO
:
9162 case R_PPC64_GOT_TLSGD16_LO
:
9163 case R_PPC64_GOT_TPREL16_LO_DS
:
9164 case R_PPC64_GOT_DTPREL16_LO_DS
:
9165 case R_PPC64_GOT16_LO
:
9166 case R_PPC64_GOT16_LO_DS
:
9167 case R_PPC64_TOC16_LO
:
9168 case R_PPC64_TOC16_LO_DS
:
9169 insn_check
= check_lo
;
9173 if (insn_check
!= no_check
)
9175 bfd_vma off
= rel
->r_offset
& ~3;
9176 unsigned char buf
[4];
9179 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9184 insn
= bfd_get_32 (ibfd
, buf
);
9185 if (insn_check
== check_lo
9186 ? !ok_lo_toc_insn (insn
, r_type
)
9187 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9188 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9192 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9193 sprintf (str
, "%#08x", insn
);
9194 info
->callbacks
->einfo
9195 /* xgettext:c-format */
9196 (_("%H: toc optimization is not supported for"
9197 " %s instruction\n"),
9198 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9205 case R_PPC64_TOC16_LO
:
9206 case R_PPC64_TOC16_HI
:
9207 case R_PPC64_TOC16_HA
:
9208 case R_PPC64_TOC16_DS
:
9209 case R_PPC64_TOC16_LO_DS
:
9210 /* In case we're taking addresses of toc entries. */
9211 case R_PPC64_ADDR64
:
9218 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9219 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9230 val
= h
->root
.u
.def
.value
;
9232 val
= sym
->st_value
;
9233 val
+= rel
->r_addend
;
9235 if (val
>= toc
->size
)
9238 if ((skip
[val
>> 3] & can_optimize
) != 0)
9245 case R_PPC64_TOC16_HA
:
9248 case R_PPC64_TOC16_LO_DS
:
9249 off
= rel
->r_offset
;
9250 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9251 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9257 if ((opc
& (0x3f << 2)) == (58u << 2))
9262 /* Wrong sort of reloc, or not a ld. We may
9263 as well clear ref_from_discarded too. */
9270 /* For the toc section, we only mark as used if this
9271 entry itself isn't unused. */
9272 else if ((used
[rel
->r_offset
>> 3]
9273 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9276 /* Do all the relocs again, to catch reference
9285 if (elf_section_data (sec
)->relocs
!= relstart
)
9289 /* Merge the used and skip arrays. Assume that TOC
9290 doublewords not appearing as either used or unused belong
9291 to an entry more than one doubleword in size. */
9292 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9293 drop
< skip
+ (toc
->size
+ 7) / 8;
9298 *drop
&= ~ref_from_discarded
;
9299 if ((*drop
& can_optimize
) != 0)
9303 else if ((*drop
& ref_from_discarded
) != 0)
9306 last
= ref_from_discarded
;
9316 bfd_byte
*contents
, *src
;
9318 Elf_Internal_Sym
*sym
;
9319 bfd_boolean local_toc_syms
= FALSE
;
9321 /* Shuffle the toc contents, and at the same time convert the
9322 skip array from booleans into offsets. */
9323 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9326 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9328 for (src
= contents
, off
= 0, drop
= skip
;
9329 src
< contents
+ toc
->size
;
9332 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9337 memcpy (src
- off
, src
, 8);
9341 toc
->rawsize
= toc
->size
;
9342 toc
->size
= src
- contents
- off
;
9344 /* Adjust addends for relocs against the toc section sym,
9345 and optimize any accesses we can. */
9346 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9348 if (sec
->reloc_count
== 0
9349 || discarded_section (sec
))
9352 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9354 if (relstart
== NULL
)
9357 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9359 enum elf_ppc64_reloc_type r_type
;
9360 unsigned long r_symndx
;
9362 struct elf_link_hash_entry
*h
;
9365 r_type
= ELF64_R_TYPE (rel
->r_info
);
9372 case R_PPC64_TOC16_LO
:
9373 case R_PPC64_TOC16_HI
:
9374 case R_PPC64_TOC16_HA
:
9375 case R_PPC64_TOC16_DS
:
9376 case R_PPC64_TOC16_LO_DS
:
9377 case R_PPC64_ADDR64
:
9381 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9382 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9390 val
= h
->root
.u
.def
.value
;
9393 val
= sym
->st_value
;
9395 local_toc_syms
= TRUE
;
9398 val
+= rel
->r_addend
;
9400 if (val
> toc
->rawsize
)
9402 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9404 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9406 Elf_Internal_Rela
*tocrel
9407 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9408 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9412 case R_PPC64_TOC16_HA
:
9413 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9416 case R_PPC64_TOC16_LO_DS
:
9417 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9421 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9423 info
->callbacks
->einfo
9424 /* xgettext:c-format */
9425 (_("%H: %s references "
9426 "optimized away TOC entry\n"),
9427 ibfd
, sec
, rel
->r_offset
,
9428 ppc64_elf_howto_table
[r_type
]->name
);
9429 bfd_set_error (bfd_error_bad_value
);
9432 rel
->r_addend
= tocrel
->r_addend
;
9433 elf_section_data (sec
)->relocs
= relstart
;
9437 if (h
!= NULL
|| sym
->st_value
!= 0)
9440 rel
->r_addend
-= skip
[val
>> 3];
9441 elf_section_data (sec
)->relocs
= relstart
;
9444 if (elf_section_data (sec
)->relocs
!= relstart
)
9448 /* We shouldn't have local or global symbols defined in the TOC,
9449 but handle them anyway. */
9450 if (local_syms
!= NULL
)
9451 for (sym
= local_syms
;
9452 sym
< local_syms
+ symtab_hdr
->sh_info
;
9454 if (sym
->st_value
!= 0
9455 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9459 if (sym
->st_value
> toc
->rawsize
)
9460 i
= toc
->rawsize
>> 3;
9462 i
= sym
->st_value
>> 3;
9464 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9468 (_("%s defined on removed toc entry"),
9469 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9472 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9473 sym
->st_value
= (bfd_vma
) i
<< 3;
9476 sym
->st_value
-= skip
[i
];
9477 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9480 /* Adjust any global syms defined in this toc input section. */
9481 if (toc_inf
.global_toc_syms
)
9484 toc_inf
.skip
= skip
;
9485 toc_inf
.global_toc_syms
= FALSE
;
9486 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9490 if (toc
->reloc_count
!= 0)
9492 Elf_Internal_Shdr
*rel_hdr
;
9493 Elf_Internal_Rela
*wrel
;
9496 /* Remove unused toc relocs, and adjust those we keep. */
9497 if (toc_relocs
== NULL
)
9498 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9500 if (toc_relocs
== NULL
)
9504 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9505 if ((skip
[rel
->r_offset
>> 3]
9506 & (ref_from_discarded
| can_optimize
)) == 0)
9508 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9509 wrel
->r_info
= rel
->r_info
;
9510 wrel
->r_addend
= rel
->r_addend
;
9513 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9514 &local_syms
, NULL
, NULL
))
9517 elf_section_data (toc
)->relocs
= toc_relocs
;
9518 toc
->reloc_count
= wrel
- toc_relocs
;
9519 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9520 sz
= rel_hdr
->sh_entsize
;
9521 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9524 else if (toc_relocs
!= NULL
9525 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9528 if (local_syms
!= NULL
9529 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9531 if (!info
->keep_memory
)
9534 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9542 /* Return true iff input section I references the TOC using
9543 instructions limited to +/-32k offsets. */
9546 ppc64_elf_has_small_toc_reloc (asection
*i
)
9548 return (is_ppc64_elf (i
->owner
)
9549 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9552 /* Allocate space for one GOT entry. */
9555 allocate_got (struct elf_link_hash_entry
*h
,
9556 struct bfd_link_info
*info
,
9557 struct got_entry
*gent
)
9559 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9560 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9561 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9563 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9564 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9565 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9567 gent
->got
.offset
= got
->size
;
9568 got
->size
+= entsize
;
9570 if (h
->type
== STT_GNU_IFUNC
)
9572 htab
->elf
.irelplt
->size
+= rentsize
;
9573 htab
->got_reli_size
+= rentsize
;
9575 else if (((bfd_link_pic (info
)
9576 && !((gent
->tls_type
& TLS_TPREL
) != 0
9577 && bfd_link_executable (info
)
9578 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9579 || (htab
->elf
.dynamic_sections_created
9581 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9582 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9584 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9585 relgot
->size
+= rentsize
;
9589 /* This function merges got entries in the same toc group. */
9592 merge_got_entries (struct got_entry
**pent
)
9594 struct got_entry
*ent
, *ent2
;
9596 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9597 if (!ent
->is_indirect
)
9598 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9599 if (!ent2
->is_indirect
9600 && ent2
->addend
== ent
->addend
9601 && ent2
->tls_type
== ent
->tls_type
9602 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9604 ent2
->is_indirect
= TRUE
;
9605 ent2
->got
.ent
= ent
;
9609 /* If H is undefined, make it dynamic if that makes sense. */
9612 ensure_undef_dynamic (struct bfd_link_info
*info
,
9613 struct elf_link_hash_entry
*h
)
9615 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9617 if (htab
->dynamic_sections_created
9618 && ((info
->dynamic_undefined_weak
!= 0
9619 && h
->root
.type
== bfd_link_hash_undefweak
)
9620 || h
->root
.type
== bfd_link_hash_undefined
)
9623 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9624 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9628 /* Allocate space in .plt, .got and associated reloc sections for
9632 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9634 struct bfd_link_info
*info
;
9635 struct ppc_link_hash_table
*htab
;
9637 struct ppc_link_hash_entry
*eh
;
9638 struct got_entry
**pgent
, *gent
;
9640 if (h
->root
.type
== bfd_link_hash_indirect
)
9643 info
= (struct bfd_link_info
*) inf
;
9644 htab
= ppc_hash_table (info
);
9648 eh
= (struct ppc_link_hash_entry
*) h
;
9649 /* Run through the TLS GD got entries first if we're changing them
9651 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9652 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9653 if (gent
->got
.refcount
> 0
9654 && (gent
->tls_type
& TLS_GD
) != 0)
9656 /* This was a GD entry that has been converted to TPREL. If
9657 there happens to be a TPREL entry we can use that one. */
9658 struct got_entry
*ent
;
9659 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9660 if (ent
->got
.refcount
> 0
9661 && (ent
->tls_type
& TLS_TPREL
) != 0
9662 && ent
->addend
== gent
->addend
9663 && ent
->owner
== gent
->owner
)
9665 gent
->got
.refcount
= 0;
9669 /* If not, then we'll be using our own TPREL entry. */
9670 if (gent
->got
.refcount
!= 0)
9671 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9674 /* Remove any list entry that won't generate a word in the GOT before
9675 we call merge_got_entries. Otherwise we risk merging to empty
9677 pgent
= &h
->got
.glist
;
9678 while ((gent
= *pgent
) != NULL
)
9679 if (gent
->got
.refcount
> 0)
9681 if ((gent
->tls_type
& TLS_LD
) != 0
9684 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9685 *pgent
= gent
->next
;
9688 pgent
= &gent
->next
;
9691 *pgent
= gent
->next
;
9693 if (!htab
->do_multi_toc
)
9694 merge_got_entries (&h
->got
.glist
);
9696 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9697 if (!gent
->is_indirect
)
9699 /* Make sure this symbol is output as a dynamic symbol. */
9700 if (!ensure_undef_dynamic (info
, h
))
9703 if (!is_ppc64_elf (gent
->owner
))
9706 allocate_got (h
, info
, gent
);
9709 /* If no dynamic sections we can't have dynamic relocs, except for
9710 IFUNCs which are handled even in static executables. */
9711 if (!htab
->elf
.dynamic_sections_created
9712 && h
->type
!= STT_GNU_IFUNC
)
9713 eh
->dyn_relocs
= NULL
;
9715 /* Discard relocs on undefined symbols that must be local. */
9716 else if (h
->root
.type
== bfd_link_hash_undefined
9717 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9718 eh
->dyn_relocs
= NULL
;
9720 /* Also discard relocs on undefined weak syms with non-default
9721 visibility, or when dynamic_undefined_weak says so. */
9722 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9723 eh
->dyn_relocs
= NULL
;
9725 if (eh
->dyn_relocs
!= NULL
)
9727 struct elf_dyn_relocs
*p
, **pp
;
9729 /* In the shared -Bsymbolic case, discard space allocated for
9730 dynamic pc-relative relocs against symbols which turn out to
9731 be defined in regular objects. For the normal shared case,
9732 discard space for relocs that have become local due to symbol
9733 visibility changes. */
9735 if (bfd_link_pic (info
))
9737 /* Relocs that use pc_count are those that appear on a call
9738 insn, or certain REL relocs (see must_be_dyn_reloc) that
9739 can be generated via assembly. We want calls to
9740 protected symbols to resolve directly to the function
9741 rather than going via the plt. If people want function
9742 pointer comparisons to work as expected then they should
9743 avoid writing weird assembly. */
9744 if (SYMBOL_CALLS_LOCAL (info
, h
))
9746 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9748 p
->count
-= p
->pc_count
;
9757 if (eh
->dyn_relocs
!= NULL
)
9759 /* Make sure this symbol is output as a dynamic symbol. */
9760 if (!ensure_undef_dynamic (info
, h
))
9764 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
9766 /* For the non-pic case, discard space for relocs against
9767 symbols which turn out to need copy relocs or are not
9769 if (h
->dynamic_adjusted
9771 && !ELF_COMMON_DEF_P (h
))
9773 /* Make sure this symbol is output as a dynamic symbol. */
9774 if (!ensure_undef_dynamic (info
, h
))
9777 if (h
->dynindx
== -1)
9778 eh
->dyn_relocs
= NULL
;
9781 eh
->dyn_relocs
= NULL
;
9784 /* Finally, allocate space. */
9785 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9787 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9788 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9789 sreloc
= htab
->elf
.irelplt
;
9790 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9794 if ((htab
->elf
.dynamic_sections_created
9795 && h
->dynindx
!= -1)
9796 || h
->type
== STT_GNU_IFUNC
)
9798 struct plt_entry
*pent
;
9799 bfd_boolean doneone
= FALSE
;
9800 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9801 if (pent
->plt
.refcount
> 0)
9803 if (!htab
->elf
.dynamic_sections_created
9804 || h
->dynindx
== -1)
9807 pent
->plt
.offset
= s
->size
;
9808 s
->size
+= PLT_ENTRY_SIZE (htab
);
9809 s
= htab
->elf
.irelplt
;
9813 /* If this is the first .plt entry, make room for the special
9817 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9819 pent
->plt
.offset
= s
->size
;
9821 /* Make room for this entry. */
9822 s
->size
+= PLT_ENTRY_SIZE (htab
);
9824 /* Make room for the .glink code. */
9827 s
->size
+= GLINK_PLTRESOLVE_SIZE (htab
);
9830 /* We need bigger stubs past index 32767. */
9831 if (s
->size
>= GLINK_PLTRESOLVE_SIZE (htab
) + 32768*2*4)
9838 /* We also need to make an entry in the .rela.plt section. */
9839 s
= htab
->elf
.srelplt
;
9841 s
->size
+= sizeof (Elf64_External_Rela
);
9845 pent
->plt
.offset
= (bfd_vma
) -1;
9848 h
->plt
.plist
= NULL
;
9854 h
->plt
.plist
= NULL
;
9861 #define PPC_LO(v) ((v) & 0xffff)
9862 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9863 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9865 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9866 to set up space for global entry stubs. These are put in glink,
9867 after the branch table. */
9870 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9872 struct bfd_link_info
*info
;
9873 struct ppc_link_hash_table
*htab
;
9874 struct plt_entry
*pent
;
9877 if (h
->root
.type
== bfd_link_hash_indirect
)
9880 if (!h
->pointer_equality_needed
)
9887 htab
= ppc_hash_table (info
);
9891 s
= htab
->global_entry
;
9892 plt
= htab
->elf
.splt
;
9893 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9894 if (pent
->plt
.offset
!= (bfd_vma
) -1
9895 && pent
->addend
== 0)
9897 /* For ELFv2, if this symbol is not defined in a regular file
9898 and we are not generating a shared library or pie, then we
9899 need to define the symbol in the executable on a call stub.
9900 This is to avoid text relocations. */
9901 bfd_vma off
, stub_align
, stub_off
, stub_size
;
9902 unsigned int align_power
;
9906 if (htab
->params
->plt_stub_align
>= 0)
9907 align_power
= htab
->params
->plt_stub_align
;
9909 align_power
= -htab
->params
->plt_stub_align
;
9910 /* Setting section alignment is delayed until we know it is
9911 non-empty. Otherwise the .text output section will be
9912 aligned at least to plt_stub_align even when no global
9913 entry stubs are needed. */
9914 if (s
->alignment_power
< align_power
)
9915 s
->alignment_power
= align_power
;
9916 stub_align
= (bfd_vma
) 1 << align_power
;
9917 if (htab
->params
->plt_stub_align
>= 0
9918 || ((((stub_off
+ stub_size
- 1) & -stub_align
)
9919 - (stub_off
& -stub_align
))
9920 > ((stub_size
- 1) & -stub_align
)))
9921 stub_off
= (stub_off
+ stub_align
- 1) & -stub_align
;
9922 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
9923 off
-= stub_off
+ s
->output_offset
+ s
->output_section
->vma
;
9924 /* Note that for --plt-stub-align negative we have a possible
9925 dependency between stub offset and size. Break that
9926 dependency by assuming the max stub size when calculating
9928 if (PPC_HA (off
) == 0)
9930 h
->root
.type
= bfd_link_hash_defined
;
9931 h
->root
.u
.def
.section
= s
;
9932 h
->root
.u
.def
.value
= stub_off
;
9933 s
->size
= stub_off
+ stub_size
;
9939 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9940 read-only sections. */
9943 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
9947 if (h
->root
.type
== bfd_link_hash_indirect
)
9950 sec
= readonly_dynrelocs (h
);
9953 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9955 info
->flags
|= DF_TEXTREL
;
9956 info
->callbacks
->minfo
9957 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
9958 sec
->owner
, h
->root
.root
.string
, sec
);
9960 /* Not an error, just cut short the traversal. */
9966 /* Set the sizes of the dynamic sections. */
9969 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9970 struct bfd_link_info
*info
)
9972 struct ppc_link_hash_table
*htab
;
9977 struct got_entry
*first_tlsld
;
9979 htab
= ppc_hash_table (info
);
9983 dynobj
= htab
->elf
.dynobj
;
9987 if (htab
->elf
.dynamic_sections_created
)
9989 /* Set the contents of the .interp section to the interpreter. */
9990 if (bfd_link_executable (info
) && !info
->nointerp
)
9992 s
= bfd_get_linker_section (dynobj
, ".interp");
9995 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9996 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10000 /* Set up .got offsets for local syms, and space for local dynamic
10002 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10004 struct got_entry
**lgot_ents
;
10005 struct got_entry
**end_lgot_ents
;
10006 struct plt_entry
**local_plt
;
10007 struct plt_entry
**end_local_plt
;
10008 unsigned char *lgot_masks
;
10009 bfd_size_type locsymcount
;
10010 Elf_Internal_Shdr
*symtab_hdr
;
10012 if (!is_ppc64_elf (ibfd
))
10015 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10017 struct ppc_dyn_relocs
*p
;
10019 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10021 if (!bfd_is_abs_section (p
->sec
)
10022 && bfd_is_abs_section (p
->sec
->output_section
))
10024 /* Input section has been discarded, either because
10025 it is a copy of a linkonce section or due to
10026 linker script /DISCARD/, so we'll be discarding
10029 else if (p
->count
!= 0)
10031 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10033 srel
= htab
->elf
.irelplt
;
10034 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10035 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10036 info
->flags
|= DF_TEXTREL
;
10041 lgot_ents
= elf_local_got_ents (ibfd
);
10045 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10046 locsymcount
= symtab_hdr
->sh_info
;
10047 end_lgot_ents
= lgot_ents
+ locsymcount
;
10048 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10049 end_local_plt
= local_plt
+ locsymcount
;
10050 lgot_masks
= (unsigned char *) end_local_plt
;
10051 s
= ppc64_elf_tdata (ibfd
)->got
;
10052 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10054 struct got_entry
**pent
, *ent
;
10057 while ((ent
= *pent
) != NULL
)
10058 if (ent
->got
.refcount
> 0)
10060 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10062 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10067 unsigned int ent_size
= 8;
10068 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10070 ent
->got
.offset
= s
->size
;
10071 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10076 s
->size
+= ent_size
;
10077 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10079 htab
->elf
.irelplt
->size
+= rel_size
;
10080 htab
->got_reli_size
+= rel_size
;
10082 else if (bfd_link_pic (info
)
10083 && !((ent
->tls_type
& TLS_TPREL
) != 0
10084 && bfd_link_executable (info
)))
10086 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10087 srel
->size
+= rel_size
;
10096 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10097 for (; local_plt
< end_local_plt
; ++local_plt
)
10099 struct plt_entry
*ent
;
10101 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10102 if (ent
->plt
.refcount
> 0)
10104 s
= htab
->elf
.iplt
;
10105 ent
->plt
.offset
= s
->size
;
10106 s
->size
+= PLT_ENTRY_SIZE (htab
);
10108 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10111 ent
->plt
.offset
= (bfd_vma
) -1;
10115 /* Allocate global sym .plt and .got entries, and space for global
10116 sym dynamic relocs. */
10117 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10119 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10120 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10122 first_tlsld
= NULL
;
10123 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10125 struct got_entry
*ent
;
10127 if (!is_ppc64_elf (ibfd
))
10130 ent
= ppc64_tlsld_got (ibfd
);
10131 if (ent
->got
.refcount
> 0)
10133 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10135 ent
->is_indirect
= TRUE
;
10136 ent
->got
.ent
= first_tlsld
;
10140 if (first_tlsld
== NULL
)
10142 s
= ppc64_elf_tdata (ibfd
)->got
;
10143 ent
->got
.offset
= s
->size
;
10146 if (bfd_link_pic (info
))
10148 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10149 srel
->size
+= sizeof (Elf64_External_Rela
);
10154 ent
->got
.offset
= (bfd_vma
) -1;
10157 /* We now have determined the sizes of the various dynamic sections.
10158 Allocate memory for them. */
10160 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10162 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10165 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10166 /* These haven't been allocated yet; don't strip. */
10168 else if (s
== htab
->elf
.sgot
10169 || s
== htab
->elf
.splt
10170 || s
== htab
->elf
.iplt
10171 || s
== htab
->glink
10172 || s
== htab
->global_entry
10173 || s
== htab
->elf
.sdynbss
10174 || s
== htab
->elf
.sdynrelro
)
10176 /* Strip this section if we don't need it; see the
10179 else if (s
== htab
->glink_eh_frame
)
10181 if (!bfd_is_abs_section (s
->output_section
))
10182 /* Not sized yet. */
10185 else if (CONST_STRNEQ (s
->name
, ".rela"))
10189 if (s
!= htab
->elf
.srelplt
)
10192 /* We use the reloc_count field as a counter if we need
10193 to copy relocs into the output file. */
10194 s
->reloc_count
= 0;
10199 /* It's not one of our sections, so don't allocate space. */
10205 /* If we don't need this section, strip it from the
10206 output file. This is mostly to handle .rela.bss and
10207 .rela.plt. We must create both sections in
10208 create_dynamic_sections, because they must be created
10209 before the linker maps input sections to output
10210 sections. The linker does that before
10211 adjust_dynamic_symbol is called, and it is that
10212 function which decides whether anything needs to go
10213 into these sections. */
10214 s
->flags
|= SEC_EXCLUDE
;
10218 if (bfd_is_abs_section (s
->output_section
))
10219 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10222 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10225 /* Allocate memory for the section contents. We use bfd_zalloc
10226 here in case unused entries are not reclaimed before the
10227 section's contents are written out. This should not happen,
10228 but this way if it does we get a R_PPC64_NONE reloc in .rela
10229 sections instead of garbage.
10230 We also rely on the section contents being zero when writing
10231 the GOT and .dynrelro. */
10232 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10233 if (s
->contents
== NULL
)
10237 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10239 if (!is_ppc64_elf (ibfd
))
10242 s
= ppc64_elf_tdata (ibfd
)->got
;
10243 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10246 s
->flags
|= SEC_EXCLUDE
;
10249 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10250 if (s
->contents
== NULL
)
10254 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10258 s
->flags
|= SEC_EXCLUDE
;
10261 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10262 if (s
->contents
== NULL
)
10265 s
->reloc_count
= 0;
10270 if (htab
->elf
.dynamic_sections_created
)
10272 bfd_boolean tls_opt
;
10274 /* Add some entries to the .dynamic section. We fill in the
10275 values later, in ppc64_elf_finish_dynamic_sections, but we
10276 must add the entries now so that we get the correct size for
10277 the .dynamic section. The DT_DEBUG entry is filled in by the
10278 dynamic linker and used by the debugger. */
10279 #define add_dynamic_entry(TAG, VAL) \
10280 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10282 if (bfd_link_executable (info
))
10284 if (!add_dynamic_entry (DT_DEBUG
, 0))
10288 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10290 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10291 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10292 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10293 || !add_dynamic_entry (DT_JMPREL
, 0)
10294 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10298 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10300 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10301 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10305 tls_opt
= (htab
->params
->tls_get_addr_opt
10306 && htab
->tls_get_addr_fd
!= NULL
10307 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10308 if (tls_opt
|| !htab
->opd_abi
)
10310 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10316 if (!add_dynamic_entry (DT_RELA
, 0)
10317 || !add_dynamic_entry (DT_RELASZ
, 0)
10318 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10321 /* If any dynamic relocs apply to a read-only section,
10322 then we need a DT_TEXTREL entry. */
10323 if ((info
->flags
& DF_TEXTREL
) == 0)
10324 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10326 if ((info
->flags
& DF_TEXTREL
) != 0)
10328 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10333 #undef add_dynamic_entry
10338 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10341 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10343 if (h
->plt
.plist
!= NULL
10345 && !h
->pointer_equality_needed
)
10348 return _bfd_elf_hash_symbol (h
);
10351 /* Determine the type of stub needed, if any, for a call. */
10353 static inline enum ppc_stub_type
10354 ppc_type_of_stub (asection
*input_sec
,
10355 const Elf_Internal_Rela
*rel
,
10356 struct ppc_link_hash_entry
**hash
,
10357 struct plt_entry
**plt_ent
,
10358 bfd_vma destination
,
10359 unsigned long local_off
)
10361 struct ppc_link_hash_entry
*h
= *hash
;
10363 bfd_vma branch_offset
;
10364 bfd_vma max_branch_offset
;
10365 enum elf_ppc64_reloc_type r_type
;
10369 struct plt_entry
*ent
;
10370 struct ppc_link_hash_entry
*fdh
= h
;
10372 && h
->oh
->is_func_descriptor
)
10374 fdh
= ppc_follow_link (h
->oh
);
10378 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10379 if (ent
->addend
== rel
->r_addend
10380 && ent
->plt
.offset
!= (bfd_vma
) -1)
10383 return ppc_stub_plt_call
;
10386 /* Here, we know we don't have a plt entry. If we don't have a
10387 either a defined function descriptor or a defined entry symbol
10388 in a regular object file, then it is pointless trying to make
10389 any other type of stub. */
10390 if (!is_static_defined (&fdh
->elf
)
10391 && !is_static_defined (&h
->elf
))
10392 return ppc_stub_none
;
10394 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10396 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10397 struct plt_entry
**local_plt
= (struct plt_entry
**)
10398 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10399 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10401 if (local_plt
[r_symndx
] != NULL
)
10403 struct plt_entry
*ent
;
10405 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10406 if (ent
->addend
== rel
->r_addend
10407 && ent
->plt
.offset
!= (bfd_vma
) -1)
10410 return ppc_stub_plt_call
;
10415 /* Determine where the call point is. */
10416 location
= (input_sec
->output_offset
10417 + input_sec
->output_section
->vma
10420 branch_offset
= destination
- location
;
10421 r_type
= ELF64_R_TYPE (rel
->r_info
);
10423 /* Determine if a long branch stub is needed. */
10424 max_branch_offset
= 1 << 25;
10425 if (r_type
!= R_PPC64_REL24
)
10426 max_branch_offset
= 1 << 15;
10428 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10429 /* We need a stub. Figure out whether a long_branch or plt_branch
10430 is needed later. */
10431 return ppc_stub_long_branch
;
10433 return ppc_stub_none
;
10436 /* With power7 weakly ordered memory model, it is possible for ld.so
10437 to update a plt entry in one thread and have another thread see a
10438 stale zero toc entry. To avoid this we need some sort of acquire
10439 barrier in the call stub. One solution is to make the load of the
10440 toc word seem to appear to depend on the load of the function entry
10441 word. Another solution is to test for r2 being zero, and branch to
10442 the appropriate glink entry if so.
10444 . fake dep barrier compare
10445 . ld 12,xxx(2) ld 12,xxx(2)
10446 . mtctr 12 mtctr 12
10447 . xor 11,12,12 ld 2,xxx+8(2)
10448 . add 2,2,11 cmpldi 2,0
10449 . ld 2,xxx+8(2) bnectr+
10450 . bctr b <glink_entry>
10452 The solution involving the compare turns out to be faster, so
10453 that's what we use unless the branch won't reach. */
10455 #define ALWAYS_USE_FAKE_DEP 0
10456 #define ALWAYS_EMIT_R2SAVE 0
10458 static inline unsigned int
10459 plt_stub_size (struct ppc_link_hash_table
*htab
,
10460 struct ppc_stub_hash_entry
*stub_entry
,
10463 unsigned size
= 12;
10465 if (ALWAYS_EMIT_R2SAVE
10466 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10468 if (PPC_HA (off
) != 0)
10473 if (htab
->params
->plt_static_chain
)
10475 if (htab
->params
->plt_thread_safe
10476 && htab
->elf
.dynamic_sections_created
10477 && stub_entry
->h
!= NULL
10478 && stub_entry
->h
->elf
.dynindx
!= -1)
10480 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10483 if (stub_entry
->h
!= NULL
10484 && (stub_entry
->h
== htab
->tls_get_addr_fd
10485 || stub_entry
->h
== htab
->tls_get_addr
)
10486 && htab
->params
->tls_get_addr_opt
)
10489 if (ALWAYS_EMIT_R2SAVE
10490 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10496 /* Depending on the sign of plt_stub_align:
10497 If positive, return the padding to align to a 2**plt_stub_align
10499 If negative, if this stub would cross fewer 2**plt_stub_align
10500 boundaries if we align, then return the padding needed to do so. */
10502 static inline unsigned int
10503 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10504 struct ppc_stub_hash_entry
*stub_entry
,
10508 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10509 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10511 if (htab
->params
->plt_stub_align
>= 0)
10513 stub_align
= 1 << htab
->params
->plt_stub_align
;
10514 if ((stub_off
& (stub_align
- 1)) != 0)
10515 return stub_align
- (stub_off
& (stub_align
- 1));
10519 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10520 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10521 > ((stub_size
- 1) & -stub_align
))
10522 return stub_align
- (stub_off
& (stub_align
- 1));
10526 /* Build a .plt call stub. */
10528 static inline bfd_byte
*
10529 build_plt_stub (struct ppc_link_hash_table
*htab
,
10530 struct ppc_stub_hash_entry
*stub_entry
,
10531 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10533 bfd
*obfd
= htab
->params
->stub_bfd
;
10534 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10535 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10536 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10537 && htab
->elf
.dynamic_sections_created
10538 && stub_entry
->h
!= NULL
10539 && stub_entry
->h
->elf
.dynindx
!= -1);
10540 bfd_boolean use_fake_dep
= plt_thread_safe
;
10541 bfd_vma cmp_branch_off
= 0;
10543 if (!ALWAYS_USE_FAKE_DEP
10546 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10547 || stub_entry
->h
== htab
->tls_get_addr
)
10548 && htab
->params
->tls_get_addr_opt
))
10550 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10551 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10552 / PLT_ENTRY_SIZE (htab
));
10553 bfd_vma glinkoff
= GLINK_PLTRESOLVE_SIZE (htab
) + pltindex
* 8;
10556 if (pltindex
> 32768)
10557 glinkoff
+= (pltindex
- 32768) * 4;
10559 + htab
->glink
->output_offset
10560 + htab
->glink
->output_section
->vma
);
10561 from
= (p
- stub_entry
->group
->stub_sec
->contents
10562 + 4 * (ALWAYS_EMIT_R2SAVE
10563 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10564 + 4 * (PPC_HA (offset
) != 0)
10565 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10566 != PPC_HA (offset
))
10567 + 4 * (plt_static_chain
!= 0)
10569 + stub_entry
->group
->stub_sec
->output_offset
10570 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10571 cmp_branch_off
= to
- from
;
10572 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10575 if (PPC_HA (offset
) != 0)
10579 if (ALWAYS_EMIT_R2SAVE
10580 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10581 r
[0].r_offset
+= 4;
10582 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10583 r
[1].r_offset
= r
[0].r_offset
+ 4;
10584 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10585 r
[1].r_addend
= r
[0].r_addend
;
10588 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10590 r
[2].r_offset
= r
[1].r_offset
+ 4;
10591 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10592 r
[2].r_addend
= r
[0].r_addend
;
10596 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10597 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10598 r
[2].r_addend
= r
[0].r_addend
+ 8;
10599 if (plt_static_chain
)
10601 r
[3].r_offset
= r
[2].r_offset
+ 4;
10602 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10603 r
[3].r_addend
= r
[0].r_addend
+ 16;
10608 if (ALWAYS_EMIT_R2SAVE
10609 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10610 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10613 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10614 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10618 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10619 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10622 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10624 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10627 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10632 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10633 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10635 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10636 if (plt_static_chain
)
10637 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10644 if (ALWAYS_EMIT_R2SAVE
10645 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10646 r
[0].r_offset
+= 4;
10647 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10650 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10652 r
[1].r_offset
= r
[0].r_offset
+ 4;
10653 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10654 r
[1].r_addend
= r
[0].r_addend
;
10658 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10659 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10660 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10661 if (plt_static_chain
)
10663 r
[2].r_offset
= r
[1].r_offset
+ 4;
10664 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10665 r
[2].r_addend
= r
[0].r_addend
+ 8;
10670 if (ALWAYS_EMIT_R2SAVE
10671 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10672 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10673 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10675 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10677 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10680 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10685 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10686 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10688 if (plt_static_chain
)
10689 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10690 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10693 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10695 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10696 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10697 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10700 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10704 /* Build a special .plt call stub for __tls_get_addr. */
10706 #define LD_R11_0R3 0xe9630000
10707 #define LD_R12_0R3 0xe9830000
10708 #define MR_R0_R3 0x7c601b78
10709 #define CMPDI_R11_0 0x2c2b0000
10710 #define ADD_R3_R12_R13 0x7c6c6a14
10711 #define BEQLR 0x4d820020
10712 #define MR_R3_R0 0x7c030378
10713 #define STD_R11_0R1 0xf9610000
10714 #define BCTRL 0x4e800421
10715 #define LD_R11_0R1 0xe9610000
10716 #define MTLR_R11 0x7d6803a6
10718 static inline bfd_byte
*
10719 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10720 struct ppc_stub_hash_entry
*stub_entry
,
10721 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10723 bfd
*obfd
= htab
->params
->stub_bfd
;
10725 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10726 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10727 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10728 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10729 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10730 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10731 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10733 r
[0].r_offset
+= 7 * 4;
10734 if (!ALWAYS_EMIT_R2SAVE
10735 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10736 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10738 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10739 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10742 r
[0].r_offset
+= 2 * 4;
10743 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10744 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10746 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10747 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10748 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10749 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10754 static Elf_Internal_Rela
*
10755 get_relocs (asection
*sec
, int count
)
10757 Elf_Internal_Rela
*relocs
;
10758 struct bfd_elf_section_data
*elfsec_data
;
10760 elfsec_data
= elf_section_data (sec
);
10761 relocs
= elfsec_data
->relocs
;
10762 if (relocs
== NULL
)
10764 bfd_size_type relsize
;
10765 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10766 relocs
= bfd_alloc (sec
->owner
, relsize
);
10767 if (relocs
== NULL
)
10769 elfsec_data
->relocs
= relocs
;
10770 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10771 sizeof (Elf_Internal_Shdr
));
10772 if (elfsec_data
->rela
.hdr
== NULL
)
10774 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10775 * sizeof (Elf64_External_Rela
));
10776 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10777 sec
->reloc_count
= 0;
10779 relocs
+= sec
->reloc_count
;
10780 sec
->reloc_count
+= count
;
10785 get_r2off (struct bfd_link_info
*info
,
10786 struct ppc_stub_hash_entry
*stub_entry
)
10788 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10789 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10793 /* Support linking -R objects. Get the toc pointer from the
10796 if (!htab
->opd_abi
)
10798 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10799 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10801 if (strcmp (opd
->name
, ".opd") != 0
10802 || opd
->reloc_count
!= 0)
10804 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%pT'\n"),
10805 stub_entry
->h
->elf
.root
.root
.string
);
10806 bfd_set_error (bfd_error_bad_value
);
10807 return (bfd_vma
) -1;
10809 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10810 return (bfd_vma
) -1;
10811 r2off
= bfd_get_64 (opd
->owner
, buf
);
10812 r2off
-= elf_gp (info
->output_bfd
);
10814 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10819 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10821 struct ppc_stub_hash_entry
*stub_entry
;
10822 struct ppc_branch_hash_entry
*br_entry
;
10823 struct bfd_link_info
*info
;
10824 struct ppc_link_hash_table
*htab
;
10828 Elf_Internal_Rela
*r
;
10831 /* Massage our args to the form they really have. */
10832 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10835 htab
= ppc_hash_table (info
);
10839 /* Make a note of the offset within the stubs for this entry. */
10840 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10841 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10843 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10844 switch (stub_entry
->stub_type
)
10846 case ppc_stub_long_branch
:
10847 case ppc_stub_long_branch_r2off
:
10848 /* Branches are relative. This is where we are going to. */
10849 dest
= (stub_entry
->target_value
10850 + stub_entry
->target_section
->output_offset
10851 + stub_entry
->target_section
->output_section
->vma
);
10852 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10855 /* And this is where we are coming from. */
10856 off
-= (stub_entry
->stub_offset
10857 + stub_entry
->group
->stub_sec
->output_offset
10858 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10861 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10863 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10865 if (r2off
== (bfd_vma
) -1)
10867 htab
->stub_error
= TRUE
;
10870 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
10872 if (PPC_HA (r2off
) != 0)
10874 bfd_put_32 (htab
->params
->stub_bfd
,
10875 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
10878 if (PPC_LO (r2off
) != 0)
10880 bfd_put_32 (htab
->params
->stub_bfd
,
10881 ADDI_R2_R2
| PPC_LO (r2off
), p
);
10886 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), p
);
10889 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10892 (_("long branch stub `%s' offset overflow"),
10893 stub_entry
->root
.string
);
10894 htab
->stub_error
= TRUE
;
10898 if (info
->emitrelocations
)
10900 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10903 r
->r_offset
= p
- 4 - stub_entry
->group
->stub_sec
->contents
;
10904 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10905 r
->r_addend
= dest
;
10906 if (stub_entry
->h
!= NULL
)
10908 struct elf_link_hash_entry
**hashes
;
10909 unsigned long symndx
;
10910 struct ppc_link_hash_entry
*h
;
10912 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10913 if (hashes
== NULL
)
10915 bfd_size_type hsize
;
10917 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10918 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10919 if (hashes
== NULL
)
10921 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10922 htab
->stub_globals
= 1;
10924 symndx
= htab
->stub_globals
++;
10926 hashes
[symndx
] = &h
->elf
;
10927 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10928 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10929 h
= ppc_follow_link (h
->oh
);
10930 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10931 /* H is an opd symbol. The addend must be zero. */
10935 off
= (h
->elf
.root
.u
.def
.value
10936 + h
->elf
.root
.u
.def
.section
->output_offset
10937 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10938 r
->r_addend
-= off
;
10944 case ppc_stub_plt_branch
:
10945 case ppc_stub_plt_branch_r2off
:
10946 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10947 stub_entry
->root
.string
+ 9,
10949 if (br_entry
== NULL
)
10951 _bfd_error_handler (_("can't find branch stub `%s'"),
10952 stub_entry
->root
.string
);
10953 htab
->stub_error
= TRUE
;
10957 dest
= (stub_entry
->target_value
10958 + stub_entry
->target_section
->output_offset
10959 + stub_entry
->target_section
->output_section
->vma
);
10960 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10961 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10963 bfd_put_64 (htab
->brlt
->owner
, dest
,
10964 htab
->brlt
->contents
+ br_entry
->offset
);
10966 if (br_entry
->iter
== htab
->stub_iteration
)
10968 br_entry
->iter
= 0;
10970 if (htab
->relbrlt
!= NULL
)
10972 /* Create a reloc for the branch lookup table entry. */
10973 Elf_Internal_Rela rela
;
10976 rela
.r_offset
= (br_entry
->offset
10977 + htab
->brlt
->output_offset
10978 + htab
->brlt
->output_section
->vma
);
10979 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10980 rela
.r_addend
= dest
;
10982 rl
= htab
->relbrlt
->contents
;
10983 rl
+= (htab
->relbrlt
->reloc_count
++
10984 * sizeof (Elf64_External_Rela
));
10985 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10987 else if (info
->emitrelocations
)
10989 r
= get_relocs (htab
->brlt
, 1);
10992 /* brlt, being SEC_LINKER_CREATED does not go through the
10993 normal reloc processing. Symbols and offsets are not
10994 translated from input file to output file form, so
10995 set up the offset per the output file. */
10996 r
->r_offset
= (br_entry
->offset
10997 + htab
->brlt
->output_offset
10998 + htab
->brlt
->output_section
->vma
);
10999 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11000 r
->r_addend
= dest
;
11004 dest
= (br_entry
->offset
11005 + htab
->brlt
->output_offset
11006 + htab
->brlt
->output_section
->vma
);
11009 - elf_gp (info
->output_bfd
)
11010 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11012 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11014 info
->callbacks
->einfo
11015 (_("%P: linkage table error against `%pT'\n"),
11016 stub_entry
->root
.string
);
11017 bfd_set_error (bfd_error_bad_value
);
11018 htab
->stub_error
= TRUE
;
11022 if (info
->emitrelocations
)
11024 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11027 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11028 if (bfd_big_endian (info
->output_bfd
))
11029 r
[0].r_offset
+= 2;
11030 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11031 r
[0].r_offset
+= 4;
11032 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11033 r
[0].r_addend
= dest
;
11034 if (PPC_HA (off
) != 0)
11036 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11037 r
[1].r_offset
= r
[0].r_offset
+ 4;
11038 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11039 r
[1].r_addend
= r
[0].r_addend
;
11044 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11046 if (PPC_HA (off
) != 0)
11048 bfd_put_32 (htab
->params
->stub_bfd
,
11049 ADDIS_R12_R2
| PPC_HA (off
), p
);
11051 bfd_put_32 (htab
->params
->stub_bfd
,
11052 LD_R12_0R12
| PPC_LO (off
), p
);
11055 bfd_put_32 (htab
->params
->stub_bfd
,
11056 LD_R12_0R2
| PPC_LO (off
), p
);
11060 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11062 if (r2off
== (bfd_vma
) -1)
11064 htab
->stub_error
= TRUE
;
11068 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
11070 if (PPC_HA (off
) != 0)
11072 bfd_put_32 (htab
->params
->stub_bfd
,
11073 ADDIS_R12_R2
| PPC_HA (off
), p
);
11075 bfd_put_32 (htab
->params
->stub_bfd
,
11076 LD_R12_0R12
| PPC_LO (off
), p
);
11079 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), p
);
11081 if (PPC_HA (r2off
) != 0)
11084 bfd_put_32 (htab
->params
->stub_bfd
,
11085 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
11087 if (PPC_LO (r2off
) != 0)
11090 bfd_put_32 (htab
->params
->stub_bfd
,
11091 ADDI_R2_R2
| PPC_LO (r2off
), p
);
11095 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, p
);
11097 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, p
);
11101 case ppc_stub_plt_call
:
11102 case ppc_stub_plt_call_r2save
:
11103 if (stub_entry
->h
!= NULL
11104 && stub_entry
->h
->is_func_descriptor
11105 && stub_entry
->h
->oh
!= NULL
)
11107 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11109 /* If the old-ABI "dot-symbol" is undefined make it weak so
11110 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11111 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11112 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11113 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11114 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11117 /* Now build the stub. */
11118 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11119 if (dest
>= (bfd_vma
) -2)
11122 plt
= htab
->elf
.splt
;
11123 if (!htab
->elf
.dynamic_sections_created
11124 || stub_entry
->h
== NULL
11125 || stub_entry
->h
->elf
.dynindx
== -1)
11126 plt
= htab
->elf
.iplt
;
11128 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11130 if (stub_entry
->h
== NULL
11131 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11133 Elf_Internal_Rela rela
;
11136 rela
.r_offset
= dest
;
11138 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11140 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11141 rela
.r_addend
= (stub_entry
->target_value
11142 + stub_entry
->target_section
->output_offset
11143 + stub_entry
->target_section
->output_section
->vma
);
11145 rl
= (htab
->elf
.irelplt
->contents
11146 + (htab
->elf
.irelplt
->reloc_count
++
11147 * sizeof (Elf64_External_Rela
)));
11148 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11149 stub_entry
->plt_ent
->plt
.offset
|= 1;
11150 htab
->local_ifunc_resolver
= 1;
11154 - elf_gp (info
->output_bfd
)
11155 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11157 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11159 info
->callbacks
->einfo
11160 /* xgettext:c-format */
11161 (_("%P: linkage table error against `%pT'\n"),
11162 stub_entry
->h
!= NULL
11163 ? stub_entry
->h
->elf
.root
.root
.string
11165 bfd_set_error (bfd_error_bad_value
);
11166 htab
->stub_error
= TRUE
;
11170 if (htab
->params
->plt_stub_align
!= 0)
11172 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11174 stub_entry
->group
->stub_sec
->size
+= pad
;
11175 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11180 if (info
->emitrelocations
)
11182 r
= get_relocs (stub_entry
->group
->stub_sec
,
11183 ((PPC_HA (off
) != 0)
11185 ? 2 + (htab
->params
->plt_static_chain
11186 && PPC_HA (off
+ 16) == PPC_HA (off
))
11190 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11191 if (bfd_big_endian (info
->output_bfd
))
11192 r
[0].r_offset
+= 2;
11193 r
[0].r_addend
= dest
;
11195 if (stub_entry
->h
!= NULL
11196 && (stub_entry
->h
== htab
->tls_get_addr_fd
11197 || stub_entry
->h
== htab
->tls_get_addr
)
11198 && htab
->params
->tls_get_addr_opt
)
11199 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11201 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11204 case ppc_stub_save_res
:
11212 stub_entry
->group
->stub_sec
->size
+= p
- loc
;
11214 if (htab
->params
->emit_stub_syms
)
11216 struct elf_link_hash_entry
*h
;
11219 const char *const stub_str
[] = { "long_branch",
11220 "long_branch_r2off",
11222 "plt_branch_r2off",
11226 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11227 len2
= strlen (stub_entry
->root
.string
);
11228 name
= bfd_malloc (len1
+ len2
+ 2);
11231 memcpy (name
, stub_entry
->root
.string
, 9);
11232 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11233 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11234 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11237 if (h
->root
.type
== bfd_link_hash_new
)
11239 h
->root
.type
= bfd_link_hash_defined
;
11240 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11241 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11242 h
->ref_regular
= 1;
11243 h
->def_regular
= 1;
11244 h
->ref_regular_nonweak
= 1;
11245 h
->forced_local
= 1;
11247 h
->root
.linker_def
= 1;
11254 /* As above, but don't actually build the stub. Just bump offset so
11255 we know stub section sizes, and select plt_branch stubs where
11256 long_branch stubs won't do. */
11259 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11261 struct ppc_stub_hash_entry
*stub_entry
;
11262 struct bfd_link_info
*info
;
11263 struct ppc_link_hash_table
*htab
;
11267 /* Massage our args to the form they really have. */
11268 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11271 htab
= ppc_hash_table (info
);
11275 if (stub_entry
->h
!= NULL
11276 && stub_entry
->h
->save_res
11277 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11278 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11280 /* Don't make stubs to out-of-line register save/restore
11281 functions. Instead, emit copies of the functions. */
11282 stub_entry
->group
->needs_save_res
= 1;
11283 stub_entry
->stub_type
= ppc_stub_save_res
;
11287 if (stub_entry
->stub_type
== ppc_stub_plt_call
11288 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11291 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11292 if (off
>= (bfd_vma
) -2)
11294 plt
= htab
->elf
.splt
;
11295 if (!htab
->elf
.dynamic_sections_created
11296 || stub_entry
->h
== NULL
11297 || stub_entry
->h
->elf
.dynindx
== -1)
11298 plt
= htab
->elf
.iplt
;
11299 off
+= (plt
->output_offset
11300 + plt
->output_section
->vma
11301 - elf_gp (info
->output_bfd
)
11302 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11304 size
= plt_stub_size (htab
, stub_entry
, off
);
11305 if (stub_entry
->h
!= NULL
11306 && (stub_entry
->h
== htab
->tls_get_addr_fd
11307 || stub_entry
->h
== htab
->tls_get_addr
)
11308 && htab
->params
->tls_get_addr_opt
11309 && (ALWAYS_EMIT_R2SAVE
11310 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11311 stub_entry
->group
->tls_get_addr_opt_bctrl
11312 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11314 if (htab
->params
->plt_stub_align
)
11315 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11316 if (info
->emitrelocations
)
11318 stub_entry
->group
->stub_sec
->reloc_count
11319 += ((PPC_HA (off
) != 0)
11321 ? 2 + (htab
->params
->plt_static_chain
11322 && PPC_HA (off
+ 16) == PPC_HA (off
))
11324 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11329 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11332 bfd_vma local_off
= 0;
11334 off
= (stub_entry
->target_value
11335 + stub_entry
->target_section
->output_offset
11336 + stub_entry
->target_section
->output_section
->vma
);
11337 off
-= (stub_entry
->group
->stub_sec
->size
11338 + stub_entry
->group
->stub_sec
->output_offset
11339 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11341 /* Reset the stub type from the plt variant in case we now
11342 can reach with a shorter stub. */
11343 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11344 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11347 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11349 r2off
= get_r2off (info
, stub_entry
);
11350 if (r2off
== (bfd_vma
) -1)
11352 htab
->stub_error
= TRUE
;
11356 if (PPC_HA (r2off
) != 0)
11358 if (PPC_LO (r2off
) != 0)
11363 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11365 /* If the branch offset is too big, use a ppc_stub_plt_branch.
11366 Do the same for -R objects without function descriptors. */
11367 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11368 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11370 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11372 struct ppc_branch_hash_entry
*br_entry
;
11374 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11375 stub_entry
->root
.string
+ 9,
11377 if (br_entry
== NULL
)
11379 _bfd_error_handler (_("can't build branch stub `%s'"),
11380 stub_entry
->root
.string
);
11381 htab
->stub_error
= TRUE
;
11385 if (br_entry
->iter
!= htab
->stub_iteration
)
11387 br_entry
->iter
= htab
->stub_iteration
;
11388 br_entry
->offset
= htab
->brlt
->size
;
11389 htab
->brlt
->size
+= 8;
11391 if (htab
->relbrlt
!= NULL
)
11392 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11393 else if (info
->emitrelocations
)
11395 htab
->brlt
->reloc_count
+= 1;
11396 htab
->brlt
->flags
|= SEC_RELOC
;
11400 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11401 off
= (br_entry
->offset
11402 + htab
->brlt
->output_offset
11403 + htab
->brlt
->output_section
->vma
11404 - elf_gp (info
->output_bfd
)
11405 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11407 if (info
->emitrelocations
)
11409 stub_entry
->group
->stub_sec
->reloc_count
11410 += 1 + (PPC_HA (off
) != 0);
11411 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11414 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11417 if (PPC_HA (off
) != 0)
11423 if (PPC_HA (off
) != 0)
11426 if (PPC_HA (r2off
) != 0)
11428 if (PPC_LO (r2off
) != 0)
11432 else if (info
->emitrelocations
)
11434 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11435 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11439 stub_entry
->group
->stub_sec
->size
+= size
;
11443 /* Set up various things so that we can make a list of input sections
11444 for each output section included in the link. Returns -1 on error,
11445 0 when no stubs will be needed, and 1 on success. */
11448 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11452 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11457 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11458 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11459 htab
->sec_info
= bfd_zmalloc (amt
);
11460 if (htab
->sec_info
== NULL
)
11463 /* Set toc_off for com, und, abs and ind sections. */
11464 for (id
= 0; id
< 3; id
++)
11465 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11470 /* Set up for first pass at multitoc partitioning. */
11473 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11475 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11477 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11478 htab
->toc_bfd
= NULL
;
11479 htab
->toc_first_sec
= NULL
;
11482 /* The linker repeatedly calls this function for each TOC input section
11483 and linker generated GOT section. Group input bfds such that the toc
11484 within a group is less than 64k in size. */
11487 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11489 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11490 bfd_vma addr
, off
, limit
;
11495 if (!htab
->second_toc_pass
)
11497 /* Keep track of the first .toc or .got section for this input bfd. */
11498 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11502 htab
->toc_bfd
= isec
->owner
;
11503 htab
->toc_first_sec
= isec
;
11506 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11507 off
= addr
- htab
->toc_curr
;
11508 limit
= 0x80008000;
11509 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11511 if (off
+ isec
->size
> limit
)
11513 addr
= (htab
->toc_first_sec
->output_offset
11514 + htab
->toc_first_sec
->output_section
->vma
);
11515 htab
->toc_curr
= addr
;
11516 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11519 /* toc_curr is the base address of this toc group. Set elf_gp
11520 for the input section to be the offset relative to the
11521 output toc base plus 0x8000. Making the input elf_gp an
11522 offset allows us to move the toc as a whole without
11523 recalculating input elf_gp. */
11524 off
= htab
->toc_curr
- elf_gp (info
->output_bfd
);
11525 off
+= TOC_BASE_OFF
;
11527 /* Die if someone uses a linker script that doesn't keep input
11528 file .toc and .got together. */
11530 && elf_gp (isec
->owner
) != 0
11531 && elf_gp (isec
->owner
) != off
)
11534 elf_gp (isec
->owner
) = off
;
11538 /* During the second pass toc_first_sec points to the start of
11539 a toc group, and toc_curr is used to track the old elf_gp.
11540 We use toc_bfd to ensure we only look at each bfd once. */
11541 if (htab
->toc_bfd
== isec
->owner
)
11543 htab
->toc_bfd
= isec
->owner
;
11545 if (htab
->toc_first_sec
== NULL
11546 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11548 htab
->toc_curr
= elf_gp (isec
->owner
);
11549 htab
->toc_first_sec
= isec
;
11551 addr
= (htab
->toc_first_sec
->output_offset
11552 + htab
->toc_first_sec
->output_section
->vma
);
11553 off
= addr
- elf_gp (info
->output_bfd
) + TOC_BASE_OFF
;
11554 elf_gp (isec
->owner
) = off
;
11559 /* Called via elf_link_hash_traverse to merge GOT entries for global
11563 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11565 if (h
->root
.type
== bfd_link_hash_indirect
)
11568 merge_got_entries (&h
->got
.glist
);
11573 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11577 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11579 struct got_entry
*gent
;
11581 if (h
->root
.type
== bfd_link_hash_indirect
)
11584 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11585 if (!gent
->is_indirect
)
11586 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11590 /* Called on the first multitoc pass after the last call to
11591 ppc64_elf_next_toc_section. This function removes duplicate GOT
11595 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11597 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11598 struct bfd
*ibfd
, *ibfd2
;
11599 bfd_boolean done_something
;
11601 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11603 if (!htab
->do_multi_toc
)
11606 /* Merge global sym got entries within a toc group. */
11607 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11609 /* And tlsld_got. */
11610 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11612 struct got_entry
*ent
, *ent2
;
11614 if (!is_ppc64_elf (ibfd
))
11617 ent
= ppc64_tlsld_got (ibfd
);
11618 if (!ent
->is_indirect
11619 && ent
->got
.offset
!= (bfd_vma
) -1)
11621 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11623 if (!is_ppc64_elf (ibfd2
))
11626 ent2
= ppc64_tlsld_got (ibfd2
);
11627 if (!ent2
->is_indirect
11628 && ent2
->got
.offset
!= (bfd_vma
) -1
11629 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11631 ent2
->is_indirect
= TRUE
;
11632 ent2
->got
.ent
= ent
;
11638 /* Zap sizes of got sections. */
11639 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11640 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11641 htab
->got_reli_size
= 0;
11643 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11645 asection
*got
, *relgot
;
11647 if (!is_ppc64_elf (ibfd
))
11650 got
= ppc64_elf_tdata (ibfd
)->got
;
11653 got
->rawsize
= got
->size
;
11655 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11656 relgot
->rawsize
= relgot
->size
;
11661 /* Now reallocate the got, local syms first. We don't need to
11662 allocate section contents again since we never increase size. */
11663 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11665 struct got_entry
**lgot_ents
;
11666 struct got_entry
**end_lgot_ents
;
11667 struct plt_entry
**local_plt
;
11668 struct plt_entry
**end_local_plt
;
11669 unsigned char *lgot_masks
;
11670 bfd_size_type locsymcount
;
11671 Elf_Internal_Shdr
*symtab_hdr
;
11674 if (!is_ppc64_elf (ibfd
))
11677 lgot_ents
= elf_local_got_ents (ibfd
);
11681 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11682 locsymcount
= symtab_hdr
->sh_info
;
11683 end_lgot_ents
= lgot_ents
+ locsymcount
;
11684 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11685 end_local_plt
= local_plt
+ locsymcount
;
11686 lgot_masks
= (unsigned char *) end_local_plt
;
11687 s
= ppc64_elf_tdata (ibfd
)->got
;
11688 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11690 struct got_entry
*ent
;
11692 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11694 unsigned int ent_size
= 8;
11695 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11697 ent
->got
.offset
= s
->size
;
11698 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11703 s
->size
+= ent_size
;
11704 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11706 htab
->elf
.irelplt
->size
+= rel_size
;
11707 htab
->got_reli_size
+= rel_size
;
11709 else if (bfd_link_pic (info
)
11710 && !((ent
->tls_type
& TLS_TPREL
) != 0
11711 && bfd_link_executable (info
)))
11713 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11714 srel
->size
+= rel_size
;
11720 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11722 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11724 struct got_entry
*ent
;
11726 if (!is_ppc64_elf (ibfd
))
11729 ent
= ppc64_tlsld_got (ibfd
);
11730 if (!ent
->is_indirect
11731 && ent
->got
.offset
!= (bfd_vma
) -1)
11733 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11734 ent
->got
.offset
= s
->size
;
11736 if (bfd_link_pic (info
))
11738 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11739 srel
->size
+= sizeof (Elf64_External_Rela
);
11744 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11745 if (!done_something
)
11746 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11750 if (!is_ppc64_elf (ibfd
))
11753 got
= ppc64_elf_tdata (ibfd
)->got
;
11756 done_something
= got
->rawsize
!= got
->size
;
11757 if (done_something
)
11762 if (done_something
)
11763 (*htab
->params
->layout_sections_again
) ();
11765 /* Set up for second pass over toc sections to recalculate elf_gp
11766 on input sections. */
11767 htab
->toc_bfd
= NULL
;
11768 htab
->toc_first_sec
= NULL
;
11769 htab
->second_toc_pass
= TRUE
;
11770 return done_something
;
11773 /* Called after second pass of multitoc partitioning. */
11776 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11778 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11780 /* After the second pass, toc_curr tracks the TOC offset used
11781 for code sections below in ppc64_elf_next_input_section. */
11782 htab
->toc_curr
= TOC_BASE_OFF
;
11785 /* No toc references were found in ISEC. If the code in ISEC makes no
11786 calls, then there's no need to use toc adjusting stubs when branching
11787 into ISEC. Actually, indirect calls from ISEC are OK as they will
11788 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11789 needed, and 2 if a cyclical call-graph was found but no other reason
11790 for a stub was detected. If called from the top level, a return of
11791 2 means the same as a return of 0. */
11794 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11798 /* Mark this section as checked. */
11799 isec
->call_check_done
= 1;
11801 /* We know none of our code bearing sections will need toc stubs. */
11802 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11805 if (isec
->size
== 0)
11808 if (isec
->output_section
== NULL
)
11812 if (isec
->reloc_count
!= 0)
11814 Elf_Internal_Rela
*relstart
, *rel
;
11815 Elf_Internal_Sym
*local_syms
;
11816 struct ppc_link_hash_table
*htab
;
11818 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11819 info
->keep_memory
);
11820 if (relstart
== NULL
)
11823 /* Look for branches to outside of this section. */
11825 htab
= ppc_hash_table (info
);
11829 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11831 enum elf_ppc64_reloc_type r_type
;
11832 unsigned long r_symndx
;
11833 struct elf_link_hash_entry
*h
;
11834 struct ppc_link_hash_entry
*eh
;
11835 Elf_Internal_Sym
*sym
;
11837 struct _opd_sec_data
*opd
;
11841 r_type
= ELF64_R_TYPE (rel
->r_info
);
11842 if (r_type
!= R_PPC64_REL24
11843 && r_type
!= R_PPC64_REL14
11844 && r_type
!= R_PPC64_REL14_BRTAKEN
11845 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11848 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11849 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11856 /* Calls to dynamic lib functions go through a plt call stub
11858 eh
= (struct ppc_link_hash_entry
*) h
;
11860 && (eh
->elf
.plt
.plist
!= NULL
11862 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11868 if (sym_sec
== NULL
)
11869 /* Ignore other undefined symbols. */
11872 /* Assume branches to other sections not included in the
11873 link need stubs too, to cover -R and absolute syms. */
11874 if (sym_sec
->output_section
== NULL
)
11881 sym_value
= sym
->st_value
;
11884 if (h
->root
.type
!= bfd_link_hash_defined
11885 && h
->root
.type
!= bfd_link_hash_defweak
)
11887 sym_value
= h
->root
.u
.def
.value
;
11889 sym_value
+= rel
->r_addend
;
11891 /* If this branch reloc uses an opd sym, find the code section. */
11892 opd
= get_opd_info (sym_sec
);
11895 if (h
== NULL
&& opd
->adjust
!= NULL
)
11899 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11901 /* Assume deleted functions won't ever be called. */
11903 sym_value
+= adjust
;
11906 dest
= opd_entry_value (sym_sec
, sym_value
,
11907 &sym_sec
, NULL
, FALSE
);
11908 if (dest
== (bfd_vma
) -1)
11913 + sym_sec
->output_offset
11914 + sym_sec
->output_section
->vma
);
11916 /* Ignore branch to self. */
11917 if (sym_sec
== isec
)
11920 /* If the called function uses the toc, we need a stub. */
11921 if (sym_sec
->has_toc_reloc
11922 || sym_sec
->makes_toc_func_call
)
11928 /* Assume any branch that needs a long branch stub might in fact
11929 need a plt_branch stub. A plt_branch stub uses r2. */
11930 else if (dest
- (isec
->output_offset
11931 + isec
->output_section
->vma
11932 + rel
->r_offset
) + (1 << 25)
11933 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11941 /* If calling back to a section in the process of being
11942 tested, we can't say for sure that no toc adjusting stubs
11943 are needed, so don't return zero. */
11944 else if (sym_sec
->call_check_in_progress
)
11947 /* Branches to another section that itself doesn't have any TOC
11948 references are OK. Recursively call ourselves to check. */
11949 else if (!sym_sec
->call_check_done
)
11953 /* Mark current section as indeterminate, so that other
11954 sections that call back to current won't be marked as
11956 isec
->call_check_in_progress
= 1;
11957 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11958 isec
->call_check_in_progress
= 0;
11969 if (local_syms
!= NULL
11970 && (elf_symtab_hdr (isec
->owner
).contents
11971 != (unsigned char *) local_syms
))
11973 if (elf_section_data (isec
)->relocs
!= relstart
)
11978 && isec
->map_head
.s
!= NULL
11979 && (strcmp (isec
->output_section
->name
, ".init") == 0
11980 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11982 if (isec
->map_head
.s
->has_toc_reloc
11983 || isec
->map_head
.s
->makes_toc_func_call
)
11985 else if (!isec
->map_head
.s
->call_check_done
)
11988 isec
->call_check_in_progress
= 1;
11989 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11990 isec
->call_check_in_progress
= 0;
11997 isec
->makes_toc_func_call
= 1;
12002 /* The linker repeatedly calls this function for each input section,
12003 in the order that input sections are linked into output sections.
12004 Build lists of input sections to determine groupings between which
12005 we may insert linker stubs. */
12008 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12010 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12015 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12016 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12018 /* This happens to make the list in reverse order,
12019 which is what we want. */
12020 htab
->sec_info
[isec
->id
].u
.list
12021 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12022 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12025 if (htab
->multi_toc_needed
)
12027 /* Analyse sections that aren't already flagged as needing a
12028 valid toc pointer. Exclude .fixup for the linux kernel.
12029 .fixup contains branches, but only back to the function that
12030 hit an exception. */
12031 if (!(isec
->has_toc_reloc
12032 || (isec
->flags
& SEC_CODE
) == 0
12033 || strcmp (isec
->name
, ".fixup") == 0
12034 || isec
->call_check_done
))
12036 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12039 /* Make all sections use the TOC assigned for this object file.
12040 This will be wrong for pasted sections; We fix that in
12041 check_pasted_section(). */
12042 if (elf_gp (isec
->owner
) != 0)
12043 htab
->toc_curr
= elf_gp (isec
->owner
);
12046 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12050 /* Check that all .init and .fini sections use the same toc, if they
12051 have toc relocs. */
12054 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12056 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12060 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12061 bfd_vma toc_off
= 0;
12064 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12065 if (i
->has_toc_reloc
)
12068 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12069 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12074 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12075 if (i
->makes_toc_func_call
)
12077 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12081 /* Make sure the whole pasted function uses the same toc offset. */
12083 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12084 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12090 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12092 return (check_pasted_section (info
, ".init")
12093 & check_pasted_section (info
, ".fini"));
12096 /* See whether we can group stub sections together. Grouping stub
12097 sections may result in fewer stubs. More importantly, we need to
12098 put all .init* and .fini* stubs at the beginning of the .init or
12099 .fini output sections respectively, because glibc splits the
12100 _init and _fini functions into multiple parts. Putting a stub in
12101 the middle of a function is not a good idea. */
12104 group_sections (struct bfd_link_info
*info
,
12105 bfd_size_type stub_group_size
,
12106 bfd_boolean stubs_always_before_branch
)
12108 struct ppc_link_hash_table
*htab
;
12110 bfd_boolean suppress_size_errors
;
12112 htab
= ppc_hash_table (info
);
12116 suppress_size_errors
= FALSE
;
12117 if (stub_group_size
== 1)
12119 /* Default values. */
12120 if (stubs_always_before_branch
)
12121 stub_group_size
= 0x1e00000;
12123 stub_group_size
= 0x1c00000;
12124 suppress_size_errors
= TRUE
;
12127 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12131 if (osec
->id
>= htab
->sec_info_arr_size
)
12134 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12135 while (tail
!= NULL
)
12139 bfd_size_type total
;
12140 bfd_boolean big_sec
;
12142 struct map_stub
*group
;
12143 bfd_size_type group_size
;
12146 total
= tail
->size
;
12147 group_size
= (ppc64_elf_section_data (tail
) != NULL
12148 && ppc64_elf_section_data (tail
)->has_14bit_branch
12149 ? stub_group_size
>> 10 : stub_group_size
);
12151 big_sec
= total
> group_size
;
12152 if (big_sec
&& !suppress_size_errors
)
12153 /* xgettext:c-format */
12154 _bfd_error_handler (_("%pB section %pA exceeds stub group size"),
12155 tail
->owner
, tail
);
12156 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12158 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12159 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12160 < (ppc64_elf_section_data (prev
) != NULL
12161 && ppc64_elf_section_data (prev
)->has_14bit_branch
12162 ? (group_size
= stub_group_size
>> 10) : group_size
))
12163 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12166 /* OK, the size from the start of CURR to the end is less
12167 than group_size and thus can be handled by one stub
12168 section. (or the tail section is itself larger than
12169 group_size, in which case we may be toast.) We should
12170 really be keeping track of the total size of stubs added
12171 here, as stubs contribute to the final output section
12172 size. That's a little tricky, and this way will only
12173 break if stubs added make the total size more than 2^25,
12174 ie. for the default stub_group_size, if stubs total more
12175 than 2097152 bytes, or nearly 75000 plt call stubs. */
12176 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12179 group
->link_sec
= curr
;
12180 group
->stub_sec
= NULL
;
12181 group
->needs_save_res
= 0;
12182 group
->tls_get_addr_opt_bctrl
= -1u;
12183 group
->next
= htab
->group
;
12184 htab
->group
= group
;
12187 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12188 /* Set up this stub group. */
12189 htab
->sec_info
[tail
->id
].u
.group
= group
;
12191 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12193 /* But wait, there's more! Input sections up to group_size
12194 bytes before the stub section can be handled by it too.
12195 Don't do this if we have a really large section after the
12196 stubs, as adding more stubs increases the chance that
12197 branches may not reach into the stub section. */
12198 if (!stubs_always_before_branch
&& !big_sec
)
12201 while (prev
!= NULL
12202 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12203 < (ppc64_elf_section_data (prev
) != NULL
12204 && ppc64_elf_section_data (prev
)->has_14bit_branch
12205 ? (group_size
= stub_group_size
>> 10) : group_size
))
12206 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12209 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12210 htab
->sec_info
[tail
->id
].u
.group
= group
;
12219 static const unsigned char glink_eh_frame_cie
[] =
12221 0, 0, 0, 16, /* length. */
12222 0, 0, 0, 0, /* id. */
12223 1, /* CIE version. */
12224 'z', 'R', 0, /* Augmentation string. */
12225 4, /* Code alignment. */
12226 0x78, /* Data alignment. */
12228 1, /* Augmentation size. */
12229 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12230 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12234 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12236 size_t this_size
= 17;
12237 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12239 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12242 else if (to_bctrl
< 256)
12244 else if (to_bctrl
< 65536)
12250 this_size
= (this_size
+ align
- 1) & -align
;
12254 /* Stripping output sections is normally done before dynamic section
12255 symbols have been allocated. This function is called later, and
12256 handles cases like htab->brlt which is mapped to its own output
12260 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12262 if (isec
->size
== 0
12263 && isec
->output_section
->size
== 0
12264 && !(isec
->output_section
->flags
& SEC_KEEP
)
12265 && !bfd_section_removed_from_list (info
->output_bfd
,
12266 isec
->output_section
)
12267 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12269 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12270 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12271 info
->output_bfd
->section_count
--;
12275 /* Determine and set the size of the stub section for a final link.
12277 The basic idea here is to examine all the relocations looking for
12278 PC-relative calls to a target that is unreachable with a "bl"
12282 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12284 bfd_size_type stub_group_size
;
12285 bfd_boolean stubs_always_before_branch
;
12286 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12291 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12292 htab
->params
->plt_thread_safe
= 1;
12293 if (!htab
->opd_abi
)
12294 htab
->params
->plt_thread_safe
= 0;
12295 else if (htab
->params
->plt_thread_safe
== -1)
12297 static const char *const thread_starter
[] =
12301 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12303 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12304 "mq_notify", "create_timer",
12309 "GOMP_parallel_start",
12310 "GOMP_parallel_loop_static",
12311 "GOMP_parallel_loop_static_start",
12312 "GOMP_parallel_loop_dynamic",
12313 "GOMP_parallel_loop_dynamic_start",
12314 "GOMP_parallel_loop_guided",
12315 "GOMP_parallel_loop_guided_start",
12316 "GOMP_parallel_loop_runtime",
12317 "GOMP_parallel_loop_runtime_start",
12318 "GOMP_parallel_sections",
12319 "GOMP_parallel_sections_start",
12325 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12327 struct elf_link_hash_entry
*h
;
12328 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12329 FALSE
, FALSE
, TRUE
);
12330 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12331 if (htab
->params
->plt_thread_safe
)
12335 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12336 if (htab
->params
->group_size
< 0)
12337 stub_group_size
= -htab
->params
->group_size
;
12339 stub_group_size
= htab
->params
->group_size
;
12341 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12344 #define STUB_SHRINK_ITER 20
12345 /* Loop until no stubs added. After iteration 20 of this loop we may
12346 exit on a stub section shrinking. This is to break out of a
12347 pathological case where adding stubs on one iteration decreases
12348 section gaps (perhaps due to alignment), which then requires
12349 fewer or smaller stubs on the next iteration. */
12354 unsigned int bfd_indx
;
12355 struct map_stub
*group
;
12357 htab
->stub_iteration
+= 1;
12359 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12361 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12363 Elf_Internal_Shdr
*symtab_hdr
;
12365 Elf_Internal_Sym
*local_syms
= NULL
;
12367 if (!is_ppc64_elf (input_bfd
))
12370 /* We'll need the symbol table in a second. */
12371 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12372 if (symtab_hdr
->sh_info
== 0)
12375 /* Walk over each section attached to the input bfd. */
12376 for (section
= input_bfd
->sections
;
12378 section
= section
->next
)
12380 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12382 /* If there aren't any relocs, then there's nothing more
12384 if ((section
->flags
& SEC_RELOC
) == 0
12385 || (section
->flags
& SEC_ALLOC
) == 0
12386 || (section
->flags
& SEC_LOAD
) == 0
12387 || (section
->flags
& SEC_CODE
) == 0
12388 || section
->reloc_count
== 0)
12391 /* If this section is a link-once section that will be
12392 discarded, then don't create any stubs. */
12393 if (section
->output_section
== NULL
12394 || section
->output_section
->owner
!= info
->output_bfd
)
12397 /* Get the relocs. */
12399 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12400 info
->keep_memory
);
12401 if (internal_relocs
== NULL
)
12402 goto error_ret_free_local
;
12404 /* Now examine each relocation. */
12405 irela
= internal_relocs
;
12406 irelaend
= irela
+ section
->reloc_count
;
12407 for (; irela
< irelaend
; irela
++)
12409 enum elf_ppc64_reloc_type r_type
;
12410 unsigned int r_indx
;
12411 enum ppc_stub_type stub_type
;
12412 struct ppc_stub_hash_entry
*stub_entry
;
12413 asection
*sym_sec
, *code_sec
;
12414 bfd_vma sym_value
, code_value
;
12415 bfd_vma destination
;
12416 unsigned long local_off
;
12417 bfd_boolean ok_dest
;
12418 struct ppc_link_hash_entry
*hash
;
12419 struct ppc_link_hash_entry
*fdh
;
12420 struct elf_link_hash_entry
*h
;
12421 Elf_Internal_Sym
*sym
;
12423 const asection
*id_sec
;
12424 struct _opd_sec_data
*opd
;
12425 struct plt_entry
*plt_ent
;
12427 r_type
= ELF64_R_TYPE (irela
->r_info
);
12428 r_indx
= ELF64_R_SYM (irela
->r_info
);
12430 if (r_type
>= R_PPC64_max
)
12432 bfd_set_error (bfd_error_bad_value
);
12433 goto error_ret_free_internal
;
12436 /* Only look for stubs on branch instructions. */
12437 if (r_type
!= R_PPC64_REL24
12438 && r_type
!= R_PPC64_REL14
12439 && r_type
!= R_PPC64_REL14_BRTAKEN
12440 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12443 /* Now determine the call target, its name, value,
12445 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12446 r_indx
, input_bfd
))
12447 goto error_ret_free_internal
;
12448 hash
= (struct ppc_link_hash_entry
*) h
;
12455 sym_value
= sym
->st_value
;
12456 if (sym_sec
!= NULL
12457 && sym_sec
->output_section
!= NULL
)
12460 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12461 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12463 sym_value
= hash
->elf
.root
.u
.def
.value
;
12464 if (sym_sec
->output_section
!= NULL
)
12467 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12468 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12470 /* Recognise an old ABI func code entry sym, and
12471 use the func descriptor sym instead if it is
12473 if (hash
->elf
.root
.root
.string
[0] == '.'
12474 && hash
->oh
!= NULL
)
12476 fdh
= ppc_follow_link (hash
->oh
);
12477 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12478 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12480 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12481 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12482 if (sym_sec
->output_section
!= NULL
)
12491 bfd_set_error (bfd_error_bad_value
);
12492 goto error_ret_free_internal
;
12499 sym_value
+= irela
->r_addend
;
12500 destination
= (sym_value
12501 + sym_sec
->output_offset
12502 + sym_sec
->output_section
->vma
);
12503 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12508 code_sec
= sym_sec
;
12509 code_value
= sym_value
;
12510 opd
= get_opd_info (sym_sec
);
12515 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12517 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12520 code_value
+= adjust
;
12521 sym_value
+= adjust
;
12523 dest
= opd_entry_value (sym_sec
, sym_value
,
12524 &code_sec
, &code_value
, FALSE
);
12525 if (dest
!= (bfd_vma
) -1)
12527 destination
= dest
;
12530 /* Fixup old ABI sym to point at code
12532 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12533 hash
->elf
.root
.u
.def
.section
= code_sec
;
12534 hash
->elf
.root
.u
.def
.value
= code_value
;
12539 /* Determine what (if any) linker stub is needed. */
12541 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12542 &plt_ent
, destination
,
12545 if (stub_type
!= ppc_stub_plt_call
)
12547 /* Check whether we need a TOC adjusting stub.
12548 Since the linker pastes together pieces from
12549 different object files when creating the
12550 _init and _fini functions, it may be that a
12551 call to what looks like a local sym is in
12552 fact a call needing a TOC adjustment. */
12553 if (code_sec
!= NULL
12554 && code_sec
->output_section
!= NULL
12555 && (htab
->sec_info
[code_sec
->id
].toc_off
12556 != htab
->sec_info
[section
->id
].toc_off
)
12557 && (code_sec
->has_toc_reloc
12558 || code_sec
->makes_toc_func_call
))
12559 stub_type
= ppc_stub_long_branch_r2off
;
12562 if (stub_type
== ppc_stub_none
)
12565 /* __tls_get_addr calls might be eliminated. */
12566 if (stub_type
!= ppc_stub_plt_call
12568 && (hash
== htab
->tls_get_addr
12569 || hash
== htab
->tls_get_addr_fd
)
12570 && section
->has_tls_reloc
12571 && irela
!= internal_relocs
)
12573 /* Get tls info. */
12574 unsigned char *tls_mask
;
12576 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12577 irela
- 1, input_bfd
))
12578 goto error_ret_free_internal
;
12579 if (*tls_mask
!= 0)
12583 if (stub_type
== ppc_stub_plt_call
)
12586 && htab
->params
->plt_localentry0
!= 0
12587 && is_elfv2_localentry0 (&hash
->elf
))
12588 htab
->has_plt_localentry0
= 1;
12589 else if (irela
+ 1 < irelaend
12590 && irela
[1].r_offset
== irela
->r_offset
+ 4
12591 && (ELF64_R_TYPE (irela
[1].r_info
)
12592 == R_PPC64_TOCSAVE
))
12594 if (!tocsave_find (htab
, INSERT
,
12595 &local_syms
, irela
+ 1, input_bfd
))
12596 goto error_ret_free_internal
;
12599 stub_type
= ppc_stub_plt_call_r2save
;
12602 /* Support for grouping stub sections. */
12603 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12605 /* Get the name of this stub. */
12606 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12608 goto error_ret_free_internal
;
12610 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12611 stub_name
, FALSE
, FALSE
);
12612 if (stub_entry
!= NULL
)
12614 /* The proper stub has already been created. */
12616 if (stub_type
== ppc_stub_plt_call_r2save
)
12617 stub_entry
->stub_type
= stub_type
;
12621 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12622 if (stub_entry
== NULL
)
12625 error_ret_free_internal
:
12626 if (elf_section_data (section
)->relocs
== NULL
)
12627 free (internal_relocs
);
12628 error_ret_free_local
:
12629 if (local_syms
!= NULL
12630 && (symtab_hdr
->contents
12631 != (unsigned char *) local_syms
))
12636 stub_entry
->stub_type
= stub_type
;
12637 if (stub_type
!= ppc_stub_plt_call
12638 && stub_type
!= ppc_stub_plt_call_r2save
)
12640 stub_entry
->target_value
= code_value
;
12641 stub_entry
->target_section
= code_sec
;
12645 stub_entry
->target_value
= sym_value
;
12646 stub_entry
->target_section
= sym_sec
;
12648 stub_entry
->h
= hash
;
12649 stub_entry
->plt_ent
= plt_ent
;
12650 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12652 if (stub_entry
->h
!= NULL
)
12653 htab
->stub_globals
+= 1;
12656 /* We're done with the internal relocs, free them. */
12657 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12658 free (internal_relocs
);
12661 if (local_syms
!= NULL
12662 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12664 if (!info
->keep_memory
)
12667 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12671 /* We may have added some stubs. Find out the new size of the
12673 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12674 if (group
->stub_sec
!= NULL
)
12676 asection
*stub_sec
= group
->stub_sec
;
12678 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12679 || stub_sec
->rawsize
< stub_sec
->size
)
12680 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12681 stub_sec
->rawsize
= stub_sec
->size
;
12682 stub_sec
->size
= 0;
12683 stub_sec
->reloc_count
= 0;
12684 stub_sec
->flags
&= ~SEC_RELOC
;
12687 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12688 || htab
->brlt
->rawsize
< htab
->brlt
->size
)
12689 htab
->brlt
->rawsize
= htab
->brlt
->size
;
12690 htab
->brlt
->size
= 0;
12691 htab
->brlt
->reloc_count
= 0;
12692 htab
->brlt
->flags
&= ~SEC_RELOC
;
12693 if (htab
->relbrlt
!= NULL
)
12694 htab
->relbrlt
->size
= 0;
12696 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12698 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12699 if (group
->needs_save_res
)
12700 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12702 if (info
->emitrelocations
12703 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12705 htab
->glink
->reloc_count
= 1;
12706 htab
->glink
->flags
|= SEC_RELOC
;
12709 if (htab
->glink_eh_frame
!= NULL
12710 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12711 && htab
->glink_eh_frame
->output_section
->size
> 8)
12713 size_t size
= 0, align
= 4;
12715 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12716 if (group
->stub_sec
!= NULL
)
12717 size
+= stub_eh_frame_size (group
, align
);
12718 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12719 size
+= (24 + align
- 1) & -align
;
12721 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12722 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12723 size
= (size
+ align
- 1) & -align
;
12724 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12725 htab
->glink_eh_frame
->size
= size
;
12728 if (htab
->params
->plt_stub_align
!= 0)
12729 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12730 if (group
->stub_sec
!= NULL
)
12732 int align
= abs (htab
->params
->plt_stub_align
);
12733 group
->stub_sec
->size
12734 = (group
->stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
12737 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12738 if (group
->stub_sec
!= NULL
12739 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12740 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12741 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12745 && (htab
->brlt
->rawsize
== htab
->brlt
->size
12746 || (htab
->stub_iteration
> STUB_SHRINK_ITER
12747 && htab
->brlt
->rawsize
> htab
->brlt
->size
))
12748 && (htab
->glink_eh_frame
== NULL
12749 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12752 /* Ask the linker to do its stuff. */
12753 (*htab
->params
->layout_sections_again
) ();
12756 if (htab
->glink_eh_frame
!= NULL
12757 && htab
->glink_eh_frame
->size
!= 0)
12760 bfd_byte
*p
, *last_fde
;
12761 size_t last_fde_len
, size
, align
, pad
;
12762 struct map_stub
*group
;
12764 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12767 htab
->glink_eh_frame
->contents
= p
;
12771 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12772 /* CIE length (rewrite in case little-endian). */
12773 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12774 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12775 p
+= last_fde_len
+ 4;
12777 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12778 if (group
->stub_sec
!= NULL
)
12781 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12783 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12786 val
= p
- htab
->glink_eh_frame
->contents
;
12787 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12789 /* Offset to stub section, written later. */
12791 /* stub section size. */
12792 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12794 /* Augmentation. */
12796 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12798 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12800 /* This FDE needs more than just the default.
12801 Describe __tls_get_addr_opt stub LR. */
12803 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12804 else if (to_bctrl
< 256)
12806 *p
++ = DW_CFA_advance_loc1
;
12809 else if (to_bctrl
< 65536)
12811 *p
++ = DW_CFA_advance_loc2
;
12812 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12817 *p
++ = DW_CFA_advance_loc4
;
12818 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12821 *p
++ = DW_CFA_offset_extended_sf
;
12823 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12824 *p
++ = DW_CFA_advance_loc
+ 4;
12825 *p
++ = DW_CFA_restore_extended
;
12829 p
= last_fde
+ last_fde_len
+ 4;
12831 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12834 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12836 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12839 val
= p
- htab
->glink_eh_frame
->contents
;
12840 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12842 /* Offset to .glink, written later. */
12845 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12847 /* Augmentation. */
12850 *p
++ = DW_CFA_advance_loc
+ 1;
12851 *p
++ = DW_CFA_register
;
12853 *p
++ = htab
->opd_abi
? 12 : 0;
12854 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12855 *p
++ = DW_CFA_restore_extended
;
12857 p
+= ((24 + align
- 1) & -align
) - 24;
12859 /* Subsume any padding into the last FDE if user .eh_frame
12860 sections are aligned more than glink_eh_frame. Otherwise any
12861 zero padding will be seen as a terminator. */
12862 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12863 size
= p
- htab
->glink_eh_frame
->contents
;
12864 pad
= ((size
+ align
- 1) & -align
) - size
;
12865 htab
->glink_eh_frame
->size
= size
+ pad
;
12866 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12869 maybe_strip_output (info
, htab
->brlt
);
12870 if (htab
->glink_eh_frame
!= NULL
)
12871 maybe_strip_output (info
, htab
->glink_eh_frame
);
12876 /* Called after we have determined section placement. If sections
12877 move, we'll be called again. Provide a value for TOCstart. */
12880 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12883 bfd_vma TOCstart
, adjust
;
12887 struct elf_link_hash_entry
*h
;
12888 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12890 if (is_elf_hash_table (htab
)
12891 && htab
->hgot
!= NULL
)
12895 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12896 if (is_elf_hash_table (htab
))
12900 && h
->root
.type
== bfd_link_hash_defined
12901 && !h
->root
.linker_def
12902 && (!is_elf_hash_table (htab
)
12903 || h
->def_regular
))
12905 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12906 + h
->root
.u
.def
.section
->output_offset
12907 + h
->root
.u
.def
.section
->output_section
->vma
);
12908 _bfd_set_gp_value (obfd
, TOCstart
);
12913 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12914 order. The TOC starts where the first of these sections starts. */
12915 s
= bfd_get_section_by_name (obfd
, ".got");
12916 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12917 s
= bfd_get_section_by_name (obfd
, ".toc");
12918 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12919 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12920 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12921 s
= bfd_get_section_by_name (obfd
, ".plt");
12922 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12924 /* This may happen for
12925 o references to TOC base (SYM@toc / TOC[tc0]) without a
12927 o bad linker script
12928 o --gc-sections and empty TOC sections
12930 FIXME: Warn user? */
12932 /* Look for a likely section. We probably won't even be
12934 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12935 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12937 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12940 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12941 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12942 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12945 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12946 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12950 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12951 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12957 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12959 /* Force alignment. */
12960 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12961 TOCstart
-= adjust
;
12962 _bfd_set_gp_value (obfd
, TOCstart
);
12964 if (info
!= NULL
&& s
!= NULL
)
12966 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12970 if (htab
->elf
.hgot
!= NULL
)
12972 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12973 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12978 struct bfd_link_hash_entry
*bh
= NULL
;
12979 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12980 s
, TOC_BASE_OFF
- adjust
,
12981 NULL
, FALSE
, FALSE
, &bh
);
12987 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12988 write out any global entry stubs. */
12991 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12993 struct bfd_link_info
*info
;
12994 struct ppc_link_hash_table
*htab
;
12995 struct plt_entry
*pent
;
12998 if (h
->root
.type
== bfd_link_hash_indirect
)
13001 if (!h
->pointer_equality_needed
)
13004 if (h
->def_regular
)
13008 htab
= ppc_hash_table (info
);
13012 s
= htab
->global_entry
;
13013 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13014 if (pent
->plt
.offset
!= (bfd_vma
) -1
13015 && pent
->addend
== 0)
13021 p
= s
->contents
+ h
->root
.u
.def
.value
;
13022 plt
= htab
->elf
.splt
;
13023 if (!htab
->elf
.dynamic_sections_created
13024 || h
->dynindx
== -1)
13025 plt
= htab
->elf
.iplt
;
13026 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13027 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13029 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13031 info
->callbacks
->einfo
13032 (_("%P: linkage table error against `%pT'\n"),
13033 h
->root
.root
.string
);
13034 bfd_set_error (bfd_error_bad_value
);
13035 htab
->stub_error
= TRUE
;
13038 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13039 if (htab
->params
->emit_stub_syms
)
13041 size_t len
= strlen (h
->root
.root
.string
);
13042 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13047 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13048 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13051 if (h
->root
.type
== bfd_link_hash_new
)
13053 h
->root
.type
= bfd_link_hash_defined
;
13054 h
->root
.u
.def
.section
= s
;
13055 h
->root
.u
.def
.value
= p
- s
->contents
;
13056 h
->ref_regular
= 1;
13057 h
->def_regular
= 1;
13058 h
->ref_regular_nonweak
= 1;
13059 h
->forced_local
= 1;
13061 h
->root
.linker_def
= 1;
13065 if (PPC_HA (off
) != 0)
13067 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13070 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13072 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13074 bfd_put_32 (s
->owner
, BCTR
, p
);
13080 /* Build all the stubs associated with the current output file.
13081 The stubs are kept in a hash table attached to the main linker
13082 hash table. This function is called via gldelf64ppc_finish. */
13085 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13088 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13089 struct map_stub
*group
;
13090 asection
*stub_sec
;
13092 int stub_sec_count
= 0;
13097 /* Allocate memory to hold the linker stubs. */
13098 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13099 if ((stub_sec
= group
->stub_sec
) != NULL
13100 && stub_sec
->size
!= 0)
13102 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13103 if (stub_sec
->contents
== NULL
)
13105 stub_sec
->size
= 0;
13108 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13113 /* Build the .glink plt call stub. */
13114 if (htab
->params
->emit_stub_syms
)
13116 struct elf_link_hash_entry
*h
;
13117 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13118 TRUE
, FALSE
, FALSE
);
13121 if (h
->root
.type
== bfd_link_hash_new
)
13123 h
->root
.type
= bfd_link_hash_defined
;
13124 h
->root
.u
.def
.section
= htab
->glink
;
13125 h
->root
.u
.def
.value
= 8;
13126 h
->ref_regular
= 1;
13127 h
->def_regular
= 1;
13128 h
->ref_regular_nonweak
= 1;
13129 h
->forced_local
= 1;
13131 h
->root
.linker_def
= 1;
13134 plt0
= (htab
->elf
.splt
->output_section
->vma
13135 + htab
->elf
.splt
->output_offset
13137 if (info
->emitrelocations
)
13139 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13142 r
->r_offset
= (htab
->glink
->output_offset
13143 + htab
->glink
->output_section
->vma
);
13144 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13145 r
->r_addend
= plt0
;
13147 p
= htab
->glink
->contents
;
13148 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13149 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13153 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13155 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13157 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13159 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13161 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13163 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13165 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13167 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13169 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13171 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13176 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13178 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13180 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13182 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13184 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13186 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13188 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13190 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13192 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13194 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13196 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13198 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13200 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13203 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13205 BFD_ASSERT (p
== htab
->glink
->contents
+ GLINK_PLTRESOLVE_SIZE (htab
));
13207 /* Build the .glink lazy link call stubs. */
13209 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
13215 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13220 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13222 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13227 bfd_put_32 (htab
->glink
->owner
,
13228 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13234 /* Build .glink global entry stubs. */
13235 if (htab
->global_entry
!= NULL
&& htab
->global_entry
->size
!= 0)
13236 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13238 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13240 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13242 if (htab
->brlt
->contents
== NULL
)
13245 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13247 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13248 htab
->relbrlt
->size
);
13249 if (htab
->relbrlt
->contents
== NULL
)
13253 /* Build the stubs as directed by the stub hash table. */
13254 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13256 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13257 if (group
->needs_save_res
)
13258 group
->stub_sec
->size
+= htab
->sfpr
->size
;
13260 if (htab
->relbrlt
!= NULL
)
13261 htab
->relbrlt
->reloc_count
= 0;
13263 if (htab
->params
->plt_stub_align
!= 0)
13264 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13265 if ((stub_sec
= group
->stub_sec
) != NULL
)
13267 int align
= abs (htab
->params
->plt_stub_align
);
13268 stub_sec
->size
= (stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
13271 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13272 if (group
->needs_save_res
)
13274 stub_sec
= group
->stub_sec
;
13275 memcpy (stub_sec
->contents
+ stub_sec
->size
- htab
->sfpr
->size
,
13276 htab
->sfpr
->contents
, htab
->sfpr
->size
);
13277 if (htab
->params
->emit_stub_syms
)
13281 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13282 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13287 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13288 if ((stub_sec
= group
->stub_sec
) != NULL
)
13290 stub_sec_count
+= 1;
13291 if (stub_sec
->rawsize
!= stub_sec
->size
13292 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13293 || stub_sec
->rawsize
< stub_sec
->size
))
13299 htab
->stub_error
= TRUE
;
13300 _bfd_error_handler (_("stubs don't match calculated size"));
13303 if (htab
->stub_error
)
13309 *stats
= bfd_malloc (500);
13310 if (*stats
== NULL
)
13313 len
= sprintf (*stats
,
13314 ngettext ("linker stubs in %u group\n",
13315 "linker stubs in %u groups\n",
13318 sprintf (*stats
+ len
, _(" branch %lu\n"
13319 " toc adjust %lu\n"
13320 " long branch %lu\n"
13321 " long toc adj %lu\n"
13323 " plt call toc %lu\n"
13324 " global entry %lu"),
13325 htab
->stub_count
[ppc_stub_long_branch
- 1],
13326 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13327 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13328 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13329 htab
->stub_count
[ppc_stub_plt_call
- 1],
13330 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13331 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13336 /* What to do when ld finds relocations against symbols defined in
13337 discarded sections. */
13339 static unsigned int
13340 ppc64_elf_action_discarded (asection
*sec
)
13342 if (strcmp (".opd", sec
->name
) == 0)
13345 if (strcmp (".toc", sec
->name
) == 0)
13348 if (strcmp (".toc1", sec
->name
) == 0)
13351 return _bfd_elf_default_action_discarded (sec
);
13354 /* The RELOCATE_SECTION function is called by the ELF backend linker
13355 to handle the relocations for a section.
13357 The relocs are always passed as Rela structures; if the section
13358 actually uses Rel structures, the r_addend field will always be
13361 This function is responsible for adjust the section contents as
13362 necessary, and (if using Rela relocs and generating a
13363 relocatable output file) adjusting the reloc addend as
13366 This function does not have to worry about setting the reloc
13367 address or the reloc symbol index.
13369 LOCAL_SYMS is a pointer to the swapped in local symbols.
13371 LOCAL_SECTIONS is an array giving the section in the input file
13372 corresponding to the st_shndx field of each local symbol.
13374 The global hash table entry for the global symbols can be found
13375 via elf_sym_hashes (input_bfd).
13377 When generating relocatable output, this function must handle
13378 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13379 going to be the section symbol corresponding to the output
13380 section, which means that the addend must be adjusted
13384 ppc64_elf_relocate_section (bfd
*output_bfd
,
13385 struct bfd_link_info
*info
,
13387 asection
*input_section
,
13388 bfd_byte
*contents
,
13389 Elf_Internal_Rela
*relocs
,
13390 Elf_Internal_Sym
*local_syms
,
13391 asection
**local_sections
)
13393 struct ppc_link_hash_table
*htab
;
13394 Elf_Internal_Shdr
*symtab_hdr
;
13395 struct elf_link_hash_entry
**sym_hashes
;
13396 Elf_Internal_Rela
*rel
;
13397 Elf_Internal_Rela
*wrel
;
13398 Elf_Internal_Rela
*relend
;
13399 Elf_Internal_Rela outrel
;
13401 struct got_entry
**local_got_ents
;
13403 bfd_boolean ret
= TRUE
;
13404 bfd_boolean is_opd
;
13405 /* Assume 'at' branch hints. */
13406 bfd_boolean is_isa_v2
= TRUE
;
13407 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13409 /* Initialize howto table if needed. */
13410 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13413 htab
= ppc_hash_table (info
);
13417 /* Don't relocate stub sections. */
13418 if (input_section
->owner
== htab
->params
->stub_bfd
)
13421 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13423 local_got_ents
= elf_local_got_ents (input_bfd
);
13424 TOCstart
= elf_gp (output_bfd
);
13425 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13426 sym_hashes
= elf_sym_hashes (input_bfd
);
13427 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13429 rel
= wrel
= relocs
;
13430 relend
= relocs
+ input_section
->reloc_count
;
13431 for (; rel
< relend
; wrel
++, rel
++)
13433 enum elf_ppc64_reloc_type r_type
;
13435 bfd_reloc_status_type r
;
13436 Elf_Internal_Sym
*sym
;
13438 struct elf_link_hash_entry
*h_elf
;
13439 struct ppc_link_hash_entry
*h
;
13440 struct ppc_link_hash_entry
*fdh
;
13441 const char *sym_name
;
13442 unsigned long r_symndx
, toc_symndx
;
13443 bfd_vma toc_addend
;
13444 unsigned char tls_mask
, tls_gd
, tls_type
;
13445 unsigned char sym_type
;
13446 bfd_vma relocation
;
13447 bfd_boolean unresolved_reloc
;
13448 bfd_boolean warned
;
13449 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13452 struct ppc_stub_hash_entry
*stub_entry
;
13453 bfd_vma max_br_offset
;
13455 Elf_Internal_Rela orig_rel
;
13456 reloc_howto_type
*howto
;
13457 struct reloc_howto_struct alt_howto
;
13462 r_type
= ELF64_R_TYPE (rel
->r_info
);
13463 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13465 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13466 symbol of the previous ADDR64 reloc. The symbol gives us the
13467 proper TOC base to use. */
13468 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13470 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13472 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13478 unresolved_reloc
= FALSE
;
13481 if (r_symndx
< symtab_hdr
->sh_info
)
13483 /* It's a local symbol. */
13484 struct _opd_sec_data
*opd
;
13486 sym
= local_syms
+ r_symndx
;
13487 sec
= local_sections
[r_symndx
];
13488 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13489 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13490 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13491 opd
= get_opd_info (sec
);
13492 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13494 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13500 /* If this is a relocation against the opd section sym
13501 and we have edited .opd, adjust the reloc addend so
13502 that ld -r and ld --emit-relocs output is correct.
13503 If it is a reloc against some other .opd symbol,
13504 then the symbol value will be adjusted later. */
13505 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13506 rel
->r_addend
+= adjust
;
13508 relocation
+= adjust
;
13514 bfd_boolean ignored
;
13516 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13517 r_symndx
, symtab_hdr
, sym_hashes
,
13518 h_elf
, sec
, relocation
,
13519 unresolved_reloc
, warned
, ignored
);
13520 sym_name
= h_elf
->root
.root
.string
;
13521 sym_type
= h_elf
->type
;
13523 && sec
->owner
== output_bfd
13524 && strcmp (sec
->name
, ".opd") == 0)
13526 /* This is a symbol defined in a linker script. All
13527 such are defined in output sections, even those
13528 defined by simple assignment from a symbol defined in
13529 an input section. Transfer the symbol to an
13530 appropriate input .opd section, so that a branch to
13531 this symbol will be mapped to the location specified
13532 by the opd entry. */
13533 struct bfd_link_order
*lo
;
13534 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13535 if (lo
->type
== bfd_indirect_link_order
)
13537 asection
*isec
= lo
->u
.indirect
.section
;
13538 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13539 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13542 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13543 h_elf
->root
.u
.def
.section
= isec
;
13550 h
= (struct ppc_link_hash_entry
*) h_elf
;
13552 if (sec
!= NULL
&& discarded_section (sec
))
13554 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13555 input_bfd
, input_section
,
13556 contents
+ rel
->r_offset
);
13557 wrel
->r_offset
= rel
->r_offset
;
13559 wrel
->r_addend
= 0;
13561 /* For ld -r, remove relocations in debug sections against
13562 symbols defined in discarded sections. Not done for
13563 non-debug to preserve relocs in .eh_frame which the
13564 eh_frame editing code expects to be present. */
13565 if (bfd_link_relocatable (info
)
13566 && (input_section
->flags
& SEC_DEBUGGING
))
13572 if (bfd_link_relocatable (info
))
13575 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13577 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13578 sec
= bfd_abs_section_ptr
;
13579 unresolved_reloc
= FALSE
;
13582 /* TLS optimizations. Replace instruction sequences and relocs
13583 based on information we collected in tls_optimize. We edit
13584 RELOCS so that --emit-relocs will output something sensible
13585 for the final instruction stream. */
13590 tls_mask
= h
->tls_mask
;
13591 else if (local_got_ents
!= NULL
)
13593 struct plt_entry
**local_plt
= (struct plt_entry
**)
13594 (local_got_ents
+ symtab_hdr
->sh_info
);
13595 unsigned char *lgot_masks
= (unsigned char *)
13596 (local_plt
+ symtab_hdr
->sh_info
);
13597 tls_mask
= lgot_masks
[r_symndx
];
13600 && (r_type
== R_PPC64_TLS
13601 || r_type
== R_PPC64_TLSGD
13602 || r_type
== R_PPC64_TLSLD
))
13604 /* Check for toc tls entries. */
13605 unsigned char *toc_tls
;
13607 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13608 &local_syms
, rel
, input_bfd
))
13612 tls_mask
= *toc_tls
;
13615 /* Check that tls relocs are used with tls syms, and non-tls
13616 relocs are used with non-tls syms. */
13617 if (r_symndx
!= STN_UNDEF
13618 && r_type
!= R_PPC64_NONE
13620 || h
->elf
.root
.type
== bfd_link_hash_defined
13621 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13622 && (IS_PPC64_TLS_RELOC (r_type
)
13623 != (sym_type
== STT_TLS
13624 || (sym_type
== STT_SECTION
13625 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13628 && (r_type
== R_PPC64_TLS
13629 || r_type
== R_PPC64_TLSGD
13630 || r_type
== R_PPC64_TLSLD
))
13631 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13634 info
->callbacks
->einfo
13635 (!IS_PPC64_TLS_RELOC (r_type
)
13636 /* xgettext:c-format */
13637 ? _("%H: %s used with TLS symbol `%pT'\n")
13638 /* xgettext:c-format */
13639 : _("%H: %s used with non-TLS symbol `%pT'\n"),
13640 input_bfd
, input_section
, rel
->r_offset
,
13641 ppc64_elf_howto_table
[r_type
]->name
,
13645 /* Ensure reloc mapping code below stays sane. */
13646 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13647 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13648 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13649 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13650 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13651 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13652 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13653 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13654 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13655 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13663 case R_PPC64_LO_DS_OPT
:
13664 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13665 if ((insn
& (0x3f << 26)) != 58u << 26)
13667 insn
+= (14u << 26) - (58u << 26);
13668 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13669 r_type
= R_PPC64_TOC16_LO
;
13670 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13673 case R_PPC64_TOC16
:
13674 case R_PPC64_TOC16_LO
:
13675 case R_PPC64_TOC16_DS
:
13676 case R_PPC64_TOC16_LO_DS
:
13678 /* Check for toc tls entries. */
13679 unsigned char *toc_tls
;
13682 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13683 &local_syms
, rel
, input_bfd
);
13689 tls_mask
= *toc_tls
;
13690 if (r_type
== R_PPC64_TOC16_DS
13691 || r_type
== R_PPC64_TOC16_LO_DS
)
13694 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13699 /* If we found a GD reloc pair, then we might be
13700 doing a GD->IE transition. */
13703 tls_gd
= TLS_TPRELGD
;
13704 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13707 else if (retval
== 3)
13709 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13717 case R_PPC64_GOT_TPREL16_HI
:
13718 case R_PPC64_GOT_TPREL16_HA
:
13720 && (tls_mask
& TLS_TPREL
) == 0)
13722 rel
->r_offset
-= d_offset
;
13723 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13724 r_type
= R_PPC64_NONE
;
13725 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13729 case R_PPC64_GOT_TPREL16_DS
:
13730 case R_PPC64_GOT_TPREL16_LO_DS
:
13732 && (tls_mask
& TLS_TPREL
) == 0)
13735 insn
= bfd_get_32 (input_bfd
,
13736 contents
+ rel
->r_offset
- d_offset
);
13738 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13739 bfd_put_32 (input_bfd
, insn
,
13740 contents
+ rel
->r_offset
- d_offset
);
13741 r_type
= R_PPC64_TPREL16_HA
;
13742 if (toc_symndx
!= 0)
13744 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13745 rel
->r_addend
= toc_addend
;
13746 /* We changed the symbol. Start over in order to
13747 get h, sym, sec etc. right. */
13751 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13757 && (tls_mask
& TLS_TPREL
) == 0)
13759 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13760 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13763 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13764 /* Was PPC64_TLS which sits on insn boundary, now
13765 PPC64_TPREL16_LO which is at low-order half-word. */
13766 rel
->r_offset
+= d_offset
;
13767 r_type
= R_PPC64_TPREL16_LO
;
13768 if (toc_symndx
!= 0)
13770 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13771 rel
->r_addend
= toc_addend
;
13772 /* We changed the symbol. Start over in order to
13773 get h, sym, sec etc. right. */
13777 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13781 case R_PPC64_GOT_TLSGD16_HI
:
13782 case R_PPC64_GOT_TLSGD16_HA
:
13783 tls_gd
= TLS_TPRELGD
;
13784 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13788 case R_PPC64_GOT_TLSLD16_HI
:
13789 case R_PPC64_GOT_TLSLD16_HA
:
13790 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13793 if ((tls_mask
& tls_gd
) != 0)
13794 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13795 + R_PPC64_GOT_TPREL16_DS
);
13798 rel
->r_offset
-= d_offset
;
13799 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13800 r_type
= R_PPC64_NONE
;
13802 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13806 case R_PPC64_GOT_TLSGD16
:
13807 case R_PPC64_GOT_TLSGD16_LO
:
13808 tls_gd
= TLS_TPRELGD
;
13809 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13813 case R_PPC64_GOT_TLSLD16
:
13814 case R_PPC64_GOT_TLSLD16_LO
:
13815 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13817 unsigned int insn1
, insn2
;
13821 offset
= (bfd_vma
) -1;
13822 /* If not using the newer R_PPC64_TLSGD/LD to mark
13823 __tls_get_addr calls, we must trust that the call
13824 stays with its arg setup insns, ie. that the next
13825 reloc is the __tls_get_addr call associated with
13826 the current reloc. Edit both insns. */
13827 if (input_section
->has_tls_get_addr_call
13828 && rel
+ 1 < relend
13829 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13830 htab
->tls_get_addr
,
13831 htab
->tls_get_addr_fd
))
13832 offset
= rel
[1].r_offset
;
13833 /* We read the low GOT_TLS (or TOC16) insn because we
13834 need to keep the destination reg. It may be
13835 something other than the usual r3, and moved to r3
13836 before the call by intervening code. */
13837 insn1
= bfd_get_32 (input_bfd
,
13838 contents
+ rel
->r_offset
- d_offset
);
13839 if ((tls_mask
& tls_gd
) != 0)
13842 insn1
&= (0x1f << 21) | (0x1f << 16);
13843 insn1
|= 58 << 26; /* ld */
13844 insn2
= 0x7c636a14; /* add 3,3,13 */
13845 if (offset
!= (bfd_vma
) -1)
13846 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13847 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13848 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13849 + R_PPC64_GOT_TPREL16_DS
);
13851 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13852 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13857 insn1
&= 0x1f << 21;
13858 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13859 insn2
= 0x38630000; /* addi 3,3,0 */
13862 /* Was an LD reloc. */
13864 sec
= local_sections
[toc_symndx
];
13866 r_symndx
< symtab_hdr
->sh_info
;
13868 if (local_sections
[r_symndx
] == sec
)
13870 if (r_symndx
>= symtab_hdr
->sh_info
)
13871 r_symndx
= STN_UNDEF
;
13872 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13873 if (r_symndx
!= STN_UNDEF
)
13874 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13875 + sec
->output_offset
13876 + sec
->output_section
->vma
);
13878 else if (toc_symndx
!= 0)
13880 r_symndx
= toc_symndx
;
13881 rel
->r_addend
= toc_addend
;
13883 r_type
= R_PPC64_TPREL16_HA
;
13884 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13885 if (offset
!= (bfd_vma
) -1)
13887 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13888 R_PPC64_TPREL16_LO
);
13889 rel
[1].r_offset
= offset
+ d_offset
;
13890 rel
[1].r_addend
= rel
->r_addend
;
13893 bfd_put_32 (input_bfd
, insn1
,
13894 contents
+ rel
->r_offset
- d_offset
);
13895 if (offset
!= (bfd_vma
) -1)
13896 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13897 if ((tls_mask
& tls_gd
) == 0
13898 && (tls_gd
== 0 || toc_symndx
!= 0))
13900 /* We changed the symbol. Start over in order
13901 to get h, sym, sec etc. right. */
13907 case R_PPC64_TLSGD
:
13908 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0
13909 && rel
+ 1 < relend
)
13911 unsigned int insn2
;
13912 bfd_vma offset
= rel
->r_offset
;
13914 if ((tls_mask
& TLS_TPRELGD
) != 0)
13917 r_type
= R_PPC64_NONE
;
13918 insn2
= 0x7c636a14; /* add 3,3,13 */
13923 if (toc_symndx
!= 0)
13925 r_symndx
= toc_symndx
;
13926 rel
->r_addend
= toc_addend
;
13928 r_type
= R_PPC64_TPREL16_LO
;
13929 rel
->r_offset
= offset
+ d_offset
;
13930 insn2
= 0x38630000; /* addi 3,3,0 */
13932 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13933 /* Zap the reloc on the _tls_get_addr call too. */
13934 BFD_ASSERT (offset
== rel
[1].r_offset
);
13935 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13936 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13937 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13942 case R_PPC64_TLSLD
:
13943 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0
13944 && rel
+ 1 < relend
)
13946 unsigned int insn2
;
13947 bfd_vma offset
= rel
->r_offset
;
13950 sec
= local_sections
[toc_symndx
];
13952 r_symndx
< symtab_hdr
->sh_info
;
13954 if (local_sections
[r_symndx
] == sec
)
13956 if (r_symndx
>= symtab_hdr
->sh_info
)
13957 r_symndx
= STN_UNDEF
;
13958 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13959 if (r_symndx
!= STN_UNDEF
)
13960 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13961 + sec
->output_offset
13962 + sec
->output_section
->vma
);
13964 r_type
= R_PPC64_TPREL16_LO
;
13965 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13966 rel
->r_offset
= offset
+ d_offset
;
13967 /* Zap the reloc on the _tls_get_addr call too. */
13968 BFD_ASSERT (offset
== rel
[1].r_offset
);
13969 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13970 insn2
= 0x38630000; /* addi 3,3,0 */
13971 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13976 case R_PPC64_DTPMOD64
:
13977 if (rel
+ 1 < relend
13978 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13979 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13981 if ((tls_mask
& TLS_GD
) == 0)
13983 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13984 if ((tls_mask
& TLS_TPRELGD
) != 0)
13985 r_type
= R_PPC64_TPREL64
;
13988 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13989 r_type
= R_PPC64_NONE
;
13991 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13996 if ((tls_mask
& TLS_LD
) == 0)
13998 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13999 r_type
= R_PPC64_NONE
;
14000 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14005 case R_PPC64_TPREL64
:
14006 if ((tls_mask
& TLS_TPREL
) == 0)
14008 r_type
= R_PPC64_NONE
;
14009 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14013 case R_PPC64_ENTRY
:
14014 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14015 if (!bfd_link_pic (info
)
14016 && !info
->traditional_format
14017 && relocation
+ 0x80008000 <= 0xffffffff)
14019 unsigned int insn1
, insn2
;
14021 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14022 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14023 if ((insn1
& ~0xfffc) == LD_R2_0R12
14024 && insn2
== ADD_R2_R2_R12
)
14026 bfd_put_32 (input_bfd
,
14027 LIS_R2
+ PPC_HA (relocation
),
14028 contents
+ rel
->r_offset
);
14029 bfd_put_32 (input_bfd
,
14030 ADDI_R2_R2
+ PPC_LO (relocation
),
14031 contents
+ rel
->r_offset
+ 4);
14036 relocation
-= (rel
->r_offset
14037 + input_section
->output_offset
14038 + input_section
->output_section
->vma
);
14039 if (relocation
+ 0x80008000 <= 0xffffffff)
14041 unsigned int insn1
, insn2
;
14043 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14044 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14045 if ((insn1
& ~0xfffc) == LD_R2_0R12
14046 && insn2
== ADD_R2_R2_R12
)
14048 bfd_put_32 (input_bfd
,
14049 ADDIS_R2_R12
+ PPC_HA (relocation
),
14050 contents
+ rel
->r_offset
);
14051 bfd_put_32 (input_bfd
,
14052 ADDI_R2_R2
+ PPC_LO (relocation
),
14053 contents
+ rel
->r_offset
+ 4);
14059 case R_PPC64_REL16_HA
:
14060 /* If we are generating a non-PIC executable, edit
14061 . 0: addis 2,12,.TOC.-0b@ha
14062 . addi 2,2,.TOC.-0b@l
14063 used by ELFv2 global entry points to set up r2, to
14066 if .TOC. is in range. */
14067 if (!bfd_link_pic (info
)
14068 && !info
->traditional_format
14070 && rel
->r_addend
== d_offset
14071 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14072 && rel
+ 1 < relend
14073 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14074 && rel
[1].r_offset
== rel
->r_offset
+ 4
14075 && rel
[1].r_addend
== rel
->r_addend
+ 4
14076 && relocation
+ 0x80008000 <= 0xffffffff)
14078 unsigned int insn1
, insn2
;
14079 bfd_vma offset
= rel
->r_offset
- d_offset
;
14080 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14081 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14082 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14083 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14085 r_type
= R_PPC64_ADDR16_HA
;
14086 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14087 rel
->r_addend
-= d_offset
;
14088 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14089 rel
[1].r_addend
-= d_offset
+ 4;
14090 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14096 /* Handle other relocations that tweak non-addend part of insn. */
14098 max_br_offset
= 1 << 25;
14099 addend
= rel
->r_addend
;
14100 reloc_dest
= DEST_NORMAL
;
14106 case R_PPC64_TOCSAVE
:
14107 if (relocation
+ addend
== (rel
->r_offset
14108 + input_section
->output_offset
14109 + input_section
->output_section
->vma
)
14110 && tocsave_find (htab
, NO_INSERT
,
14111 &local_syms
, rel
, input_bfd
))
14113 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14115 || insn
== CROR_151515
|| insn
== CROR_313131
)
14116 bfd_put_32 (input_bfd
,
14117 STD_R2_0R1
+ STK_TOC (htab
),
14118 contents
+ rel
->r_offset
);
14122 /* Branch taken prediction relocations. */
14123 case R_PPC64_ADDR14_BRTAKEN
:
14124 case R_PPC64_REL14_BRTAKEN
:
14125 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14126 /* Fall through. */
14128 /* Branch not taken prediction relocations. */
14129 case R_PPC64_ADDR14_BRNTAKEN
:
14130 case R_PPC64_REL14_BRNTAKEN
:
14131 insn
|= bfd_get_32 (input_bfd
,
14132 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14133 /* Fall through. */
14135 case R_PPC64_REL14
:
14136 max_br_offset
= 1 << 15;
14137 /* Fall through. */
14139 case R_PPC64_REL24
:
14140 /* Calls to functions with a different TOC, such as calls to
14141 shared objects, need to alter the TOC pointer. This is
14142 done using a linkage stub. A REL24 branching to these
14143 linkage stubs needs to be followed by a nop, as the nop
14144 will be replaced with an instruction to restore the TOC
14149 && h
->oh
->is_func_descriptor
)
14150 fdh
= ppc_follow_link (h
->oh
);
14151 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14153 if (stub_entry
!= NULL
14154 && (stub_entry
->stub_type
== ppc_stub_plt_call
14155 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14156 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14157 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14159 bfd_boolean can_plt_call
= FALSE
;
14161 if (stub_entry
->stub_type
== ppc_stub_plt_call
14163 && htab
->params
->plt_localentry0
!= 0
14164 && is_elfv2_localentry0 (&h
->elf
))
14166 /* The function doesn't use or change r2. */
14167 can_plt_call
= TRUE
;
14170 /* All of these stubs may modify r2, so there must be a
14171 branch and link followed by a nop. The nop is
14172 replaced by an insn to restore r2. */
14173 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14177 br
= bfd_get_32 (input_bfd
,
14178 contents
+ rel
->r_offset
);
14183 nop
= bfd_get_32 (input_bfd
,
14184 contents
+ rel
->r_offset
+ 4);
14186 || nop
== CROR_151515
|| nop
== CROR_313131
)
14189 && (h
== htab
->tls_get_addr_fd
14190 || h
== htab
->tls_get_addr
)
14191 && htab
->params
->tls_get_addr_opt
)
14193 /* Special stub used, leave nop alone. */
14196 bfd_put_32 (input_bfd
,
14197 LD_R2_0R1
+ STK_TOC (htab
),
14198 contents
+ rel
->r_offset
+ 4);
14199 can_plt_call
= TRUE
;
14204 if (!can_plt_call
&& h
!= NULL
)
14206 const char *name
= h
->elf
.root
.root
.string
;
14211 if (strncmp (name
, "__libc_start_main", 17) == 0
14212 && (name
[17] == 0 || name
[17] == '@'))
14214 /* Allow crt1 branch to go via a toc adjusting
14215 stub. Other calls that never return could do
14216 the same, if we could detect such. */
14217 can_plt_call
= TRUE
;
14223 /* g++ as of 20130507 emits self-calls without a
14224 following nop. This is arguably wrong since we
14225 have conflicting information. On the one hand a
14226 global symbol and on the other a local call
14227 sequence, but don't error for this special case.
14228 It isn't possible to cheaply verify we have
14229 exactly such a call. Allow all calls to the same
14231 asection
*code_sec
= sec
;
14233 if (get_opd_info (sec
) != NULL
)
14235 bfd_vma off
= (relocation
+ addend
14236 - sec
->output_section
->vma
14237 - sec
->output_offset
);
14239 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14241 if (code_sec
== input_section
)
14242 can_plt_call
= TRUE
;
14247 if (stub_entry
->stub_type
== ppc_stub_plt_call
14248 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14249 info
->callbacks
->einfo
14250 /* xgettext:c-format */
14251 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14252 "recompile with -fPIC\n"),
14253 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14255 info
->callbacks
->einfo
14256 /* xgettext:c-format */
14257 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14258 "(-mcmodel=small toc adjust stub)\n"),
14259 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14261 bfd_set_error (bfd_error_bad_value
);
14266 && (stub_entry
->stub_type
== ppc_stub_plt_call
14267 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14268 unresolved_reloc
= FALSE
;
14271 if ((stub_entry
== NULL
14272 || stub_entry
->stub_type
== ppc_stub_long_branch
14273 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14274 && get_opd_info (sec
) != NULL
)
14276 /* The branch destination is the value of the opd entry. */
14277 bfd_vma off
= (relocation
+ addend
14278 - sec
->output_section
->vma
14279 - sec
->output_offset
);
14280 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14281 if (dest
!= (bfd_vma
) -1)
14285 reloc_dest
= DEST_OPD
;
14289 /* If the branch is out of reach we ought to have a long
14291 from
= (rel
->r_offset
14292 + input_section
->output_offset
14293 + input_section
->output_section
->vma
);
14295 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14299 if (stub_entry
!= NULL
14300 && (stub_entry
->stub_type
== ppc_stub_long_branch
14301 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14302 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14303 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14304 || (relocation
+ addend
- from
+ max_br_offset
14305 < 2 * max_br_offset
)))
14306 /* Don't use the stub if this branch is in range. */
14309 if (stub_entry
!= NULL
)
14311 /* Munge up the value and addend so that we call the stub
14312 rather than the procedure directly. */
14313 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14315 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14316 relocation
+= (stub_sec
->output_offset
14317 + stub_sec
->output_section
->vma
14318 + stub_sec
->size
- htab
->sfpr
->size
14319 - htab
->sfpr
->output_offset
14320 - htab
->sfpr
->output_section
->vma
);
14322 relocation
= (stub_entry
->stub_offset
14323 + stub_sec
->output_offset
14324 + stub_sec
->output_section
->vma
);
14326 reloc_dest
= DEST_STUB
;
14328 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14329 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14330 && (ALWAYS_EMIT_R2SAVE
14331 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14332 && rel
+ 1 < relend
14333 && rel
[1].r_offset
== rel
->r_offset
+ 4
14334 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14342 /* Set 'a' bit. This is 0b00010 in BO field for branch
14343 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14344 for branch on CTR insns (BO == 1a00t or 1a01t). */
14345 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14346 insn
|= 0x02 << 21;
14347 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14348 insn
|= 0x08 << 21;
14354 /* Invert 'y' bit if not the default. */
14355 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14356 insn
^= 0x01 << 21;
14359 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14362 /* NOP out calls to undefined weak functions.
14363 We can thus call a weak function without first
14364 checking whether the function is defined. */
14366 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14367 && h
->elf
.dynindx
== -1
14368 && r_type
== R_PPC64_REL24
14372 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14378 /* Set `addend'. */
14383 /* xgettext:c-format */
14384 _bfd_error_handler (_("%pB: %s unsupported"),
14385 input_bfd
, ppc64_elf_howto_table
[r_type
]->name
);
14387 bfd_set_error (bfd_error_bad_value
);
14393 case R_PPC64_TLSGD
:
14394 case R_PPC64_TLSLD
:
14395 case R_PPC64_TOCSAVE
:
14396 case R_PPC64_GNU_VTINHERIT
:
14397 case R_PPC64_GNU_VTENTRY
:
14398 case R_PPC64_ENTRY
:
14401 /* GOT16 relocations. Like an ADDR16 using the symbol's
14402 address in the GOT as relocation value instead of the
14403 symbol's value itself. Also, create a GOT entry for the
14404 symbol and put the symbol value there. */
14405 case R_PPC64_GOT_TLSGD16
:
14406 case R_PPC64_GOT_TLSGD16_LO
:
14407 case R_PPC64_GOT_TLSGD16_HI
:
14408 case R_PPC64_GOT_TLSGD16_HA
:
14409 tls_type
= TLS_TLS
| TLS_GD
;
14412 case R_PPC64_GOT_TLSLD16
:
14413 case R_PPC64_GOT_TLSLD16_LO
:
14414 case R_PPC64_GOT_TLSLD16_HI
:
14415 case R_PPC64_GOT_TLSLD16_HA
:
14416 tls_type
= TLS_TLS
| TLS_LD
;
14419 case R_PPC64_GOT_TPREL16_DS
:
14420 case R_PPC64_GOT_TPREL16_LO_DS
:
14421 case R_PPC64_GOT_TPREL16_HI
:
14422 case R_PPC64_GOT_TPREL16_HA
:
14423 tls_type
= TLS_TLS
| TLS_TPREL
;
14426 case R_PPC64_GOT_DTPREL16_DS
:
14427 case R_PPC64_GOT_DTPREL16_LO_DS
:
14428 case R_PPC64_GOT_DTPREL16_HI
:
14429 case R_PPC64_GOT_DTPREL16_HA
:
14430 tls_type
= TLS_TLS
| TLS_DTPREL
;
14433 case R_PPC64_GOT16
:
14434 case R_PPC64_GOT16_LO
:
14435 case R_PPC64_GOT16_HI
:
14436 case R_PPC64_GOT16_HA
:
14437 case R_PPC64_GOT16_DS
:
14438 case R_PPC64_GOT16_LO_DS
:
14441 /* Relocation is to the entry for this symbol in the global
14446 unsigned long indx
= 0;
14447 struct got_entry
*ent
;
14449 if (tls_type
== (TLS_TLS
| TLS_LD
)
14451 || !h
->elf
.def_dynamic
))
14452 ent
= ppc64_tlsld_got (input_bfd
);
14457 if (!htab
->elf
.dynamic_sections_created
14458 || h
->elf
.dynindx
== -1
14459 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14460 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14461 /* This is actually a static link, or it is a
14462 -Bsymbolic link and the symbol is defined
14463 locally, or the symbol was forced to be local
14464 because of a version file. */
14468 indx
= h
->elf
.dynindx
;
14469 unresolved_reloc
= FALSE
;
14471 ent
= h
->elf
.got
.glist
;
14475 if (local_got_ents
== NULL
)
14477 ent
= local_got_ents
[r_symndx
];
14480 for (; ent
!= NULL
; ent
= ent
->next
)
14481 if (ent
->addend
== orig_rel
.r_addend
14482 && ent
->owner
== input_bfd
14483 && ent
->tls_type
== tls_type
)
14489 if (ent
->is_indirect
)
14490 ent
= ent
->got
.ent
;
14491 offp
= &ent
->got
.offset
;
14492 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14496 /* The offset must always be a multiple of 8. We use the
14497 least significant bit to record whether we have already
14498 processed this entry. */
14500 if ((off
& 1) != 0)
14504 /* Generate relocs for the dynamic linker, except in
14505 the case of TLSLD where we'll use one entry per
14513 ? h
->elf
.type
== STT_GNU_IFUNC
14514 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14517 relgot
= htab
->elf
.irelplt
;
14519 htab
->local_ifunc_resolver
= 1;
14520 else if (is_static_defined (&h
->elf
))
14521 htab
->maybe_local_ifunc_resolver
= 1;
14524 || (bfd_link_pic (info
)
14526 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14527 || (tls_type
== (TLS_TLS
| TLS_LD
)
14528 && !h
->elf
.def_dynamic
))
14529 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
14530 && bfd_link_executable (info
)
14531 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
14532 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14533 if (relgot
!= NULL
)
14535 outrel
.r_offset
= (got
->output_section
->vma
14536 + got
->output_offset
14538 outrel
.r_addend
= addend
;
14539 if (tls_type
& (TLS_LD
| TLS_GD
))
14541 outrel
.r_addend
= 0;
14542 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14543 if (tls_type
== (TLS_TLS
| TLS_GD
))
14545 loc
= relgot
->contents
;
14546 loc
+= (relgot
->reloc_count
++
14547 * sizeof (Elf64_External_Rela
));
14548 bfd_elf64_swap_reloca_out (output_bfd
,
14550 outrel
.r_offset
+= 8;
14551 outrel
.r_addend
= addend
;
14553 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14556 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14557 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14558 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14559 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14560 else if (indx
!= 0)
14561 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14565 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14567 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14569 /* Write the .got section contents for the sake
14571 loc
= got
->contents
+ off
;
14572 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14576 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14578 outrel
.r_addend
+= relocation
;
14579 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14581 if (htab
->elf
.tls_sec
== NULL
)
14582 outrel
.r_addend
= 0;
14584 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14587 loc
= relgot
->contents
;
14588 loc
+= (relgot
->reloc_count
++
14589 * sizeof (Elf64_External_Rela
));
14590 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14593 /* Init the .got section contents here if we're not
14594 emitting a reloc. */
14597 relocation
+= addend
;
14600 if (htab
->elf
.tls_sec
== NULL
)
14604 if (tls_type
& TLS_LD
)
14607 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14608 if (tls_type
& TLS_TPREL
)
14609 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14612 if (tls_type
& (TLS_GD
| TLS_LD
))
14614 bfd_put_64 (output_bfd
, relocation
,
14615 got
->contents
+ off
+ 8);
14619 bfd_put_64 (output_bfd
, relocation
,
14620 got
->contents
+ off
);
14624 if (off
>= (bfd_vma
) -2)
14627 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14628 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14632 case R_PPC64_PLT16_HA
:
14633 case R_PPC64_PLT16_HI
:
14634 case R_PPC64_PLT16_LO
:
14635 case R_PPC64_PLT32
:
14636 case R_PPC64_PLT64
:
14637 /* Relocation is to the entry for this symbol in the
14638 procedure linkage table. */
14640 struct plt_entry
**plt_list
= NULL
;
14642 plt_list
= &h
->elf
.plt
.plist
;
14643 else if (local_got_ents
!= NULL
)
14645 struct plt_entry
**local_plt
= (struct plt_entry
**)
14646 (local_got_ents
+ symtab_hdr
->sh_info
);
14647 unsigned char *local_got_tls_masks
= (unsigned char *)
14648 (local_plt
+ symtab_hdr
->sh_info
);
14649 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14650 plt_list
= local_plt
+ r_symndx
;
14654 struct plt_entry
*ent
;
14656 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14657 if (ent
->plt
.offset
!= (bfd_vma
) -1
14658 && ent
->addend
== orig_rel
.r_addend
)
14662 plt
= htab
->elf
.splt
;
14663 if (!htab
->elf
.dynamic_sections_created
14665 || h
->elf
.dynindx
== -1)
14666 plt
= htab
->elf
.iplt
;
14667 relocation
= (plt
->output_section
->vma
14668 + plt
->output_offset
14669 + ent
->plt
.offset
);
14671 unresolved_reloc
= FALSE
;
14679 /* Relocation value is TOC base. */
14680 relocation
= TOCstart
;
14681 if (r_symndx
== STN_UNDEF
)
14682 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14683 else if (unresolved_reloc
)
14685 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14686 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14688 unresolved_reloc
= TRUE
;
14691 /* TOC16 relocs. We want the offset relative to the TOC base,
14692 which is the address of the start of the TOC plus 0x8000.
14693 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14695 case R_PPC64_TOC16
:
14696 case R_PPC64_TOC16_LO
:
14697 case R_PPC64_TOC16_HI
:
14698 case R_PPC64_TOC16_DS
:
14699 case R_PPC64_TOC16_LO_DS
:
14700 case R_PPC64_TOC16_HA
:
14701 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14704 /* Relocate against the beginning of the section. */
14705 case R_PPC64_SECTOFF
:
14706 case R_PPC64_SECTOFF_LO
:
14707 case R_PPC64_SECTOFF_HI
:
14708 case R_PPC64_SECTOFF_DS
:
14709 case R_PPC64_SECTOFF_LO_DS
:
14710 case R_PPC64_SECTOFF_HA
:
14712 addend
-= sec
->output_section
->vma
;
14715 case R_PPC64_REL16
:
14716 case R_PPC64_REL16_LO
:
14717 case R_PPC64_REL16_HI
:
14718 case R_PPC64_REL16_HA
:
14719 case R_PPC64_REL16DX_HA
:
14722 case R_PPC64_REL14
:
14723 case R_PPC64_REL14_BRNTAKEN
:
14724 case R_PPC64_REL14_BRTAKEN
:
14725 case R_PPC64_REL24
:
14728 case R_PPC64_TPREL16
:
14729 case R_PPC64_TPREL16_LO
:
14730 case R_PPC64_TPREL16_HI
:
14731 case R_PPC64_TPREL16_HA
:
14732 case R_PPC64_TPREL16_DS
:
14733 case R_PPC64_TPREL16_LO_DS
:
14734 case R_PPC64_TPREL16_HIGH
:
14735 case R_PPC64_TPREL16_HIGHA
:
14736 case R_PPC64_TPREL16_HIGHER
:
14737 case R_PPC64_TPREL16_HIGHERA
:
14738 case R_PPC64_TPREL16_HIGHEST
:
14739 case R_PPC64_TPREL16_HIGHESTA
:
14741 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14742 && h
->elf
.dynindx
== -1)
14744 /* Make this relocation against an undefined weak symbol
14745 resolve to zero. This is really just a tweak, since
14746 code using weak externs ought to check that they are
14747 defined before using them. */
14748 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14750 insn
= bfd_get_32 (input_bfd
, p
);
14751 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14753 bfd_put_32 (input_bfd
, insn
, p
);
14756 if (htab
->elf
.tls_sec
!= NULL
)
14757 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14758 /* The TPREL16 relocs shouldn't really be used in shared
14759 libs or with non-local symbols as that will result in
14760 DT_TEXTREL being set, but support them anyway. */
14763 case R_PPC64_DTPREL16
:
14764 case R_PPC64_DTPREL16_LO
:
14765 case R_PPC64_DTPREL16_HI
:
14766 case R_PPC64_DTPREL16_HA
:
14767 case R_PPC64_DTPREL16_DS
:
14768 case R_PPC64_DTPREL16_LO_DS
:
14769 case R_PPC64_DTPREL16_HIGH
:
14770 case R_PPC64_DTPREL16_HIGHA
:
14771 case R_PPC64_DTPREL16_HIGHER
:
14772 case R_PPC64_DTPREL16_HIGHERA
:
14773 case R_PPC64_DTPREL16_HIGHEST
:
14774 case R_PPC64_DTPREL16_HIGHESTA
:
14775 if (htab
->elf
.tls_sec
!= NULL
)
14776 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14779 case R_PPC64_ADDR64_LOCAL
:
14780 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14785 case R_PPC64_DTPMOD64
:
14790 case R_PPC64_TPREL64
:
14791 if (htab
->elf
.tls_sec
!= NULL
)
14792 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14795 case R_PPC64_DTPREL64
:
14796 if (htab
->elf
.tls_sec
!= NULL
)
14797 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14798 /* Fall through. */
14800 /* Relocations that may need to be propagated if this is a
14802 case R_PPC64_REL30
:
14803 case R_PPC64_REL32
:
14804 case R_PPC64_REL64
:
14805 case R_PPC64_ADDR14
:
14806 case R_PPC64_ADDR14_BRNTAKEN
:
14807 case R_PPC64_ADDR14_BRTAKEN
:
14808 case R_PPC64_ADDR16
:
14809 case R_PPC64_ADDR16_DS
:
14810 case R_PPC64_ADDR16_HA
:
14811 case R_PPC64_ADDR16_HI
:
14812 case R_PPC64_ADDR16_HIGH
:
14813 case R_PPC64_ADDR16_HIGHA
:
14814 case R_PPC64_ADDR16_HIGHER
:
14815 case R_PPC64_ADDR16_HIGHERA
:
14816 case R_PPC64_ADDR16_HIGHEST
:
14817 case R_PPC64_ADDR16_HIGHESTA
:
14818 case R_PPC64_ADDR16_LO
:
14819 case R_PPC64_ADDR16_LO_DS
:
14820 case R_PPC64_ADDR24
:
14821 case R_PPC64_ADDR32
:
14822 case R_PPC64_ADDR64
:
14823 case R_PPC64_UADDR16
:
14824 case R_PPC64_UADDR32
:
14825 case R_PPC64_UADDR64
:
14827 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14830 if (NO_OPD_RELOCS
&& is_opd
)
14833 if (bfd_link_pic (info
)
14835 || h
->dyn_relocs
!= NULL
)
14836 && ((h
!= NULL
&& pc_dynrelocs (h
))
14837 || must_be_dyn_reloc (info
, r_type
)))
14839 ? h
->dyn_relocs
!= NULL
14840 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14842 bfd_boolean skip
, relocate
;
14847 /* When generating a dynamic object, these relocations
14848 are copied into the output file to be resolved at run
14854 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14855 input_section
, rel
->r_offset
);
14856 if (out_off
== (bfd_vma
) -1)
14858 else if (out_off
== (bfd_vma
) -2)
14859 skip
= TRUE
, relocate
= TRUE
;
14860 out_off
+= (input_section
->output_section
->vma
14861 + input_section
->output_offset
);
14862 outrel
.r_offset
= out_off
;
14863 outrel
.r_addend
= rel
->r_addend
;
14865 /* Optimize unaligned reloc use. */
14866 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14867 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14868 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14869 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14870 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14871 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14872 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14873 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14874 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14877 memset (&outrel
, 0, sizeof outrel
);
14878 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14880 && r_type
!= R_PPC64_TOC
)
14882 indx
= h
->elf
.dynindx
;
14883 BFD_ASSERT (indx
!= -1);
14884 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14888 /* This symbol is local, or marked to become local,
14889 or this is an opd section reloc which must point
14890 at a local function. */
14891 outrel
.r_addend
+= relocation
;
14892 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14894 if (is_opd
&& h
!= NULL
)
14896 /* Lie about opd entries. This case occurs
14897 when building shared libraries and we
14898 reference a function in another shared
14899 lib. The same thing happens for a weak
14900 definition in an application that's
14901 overridden by a strong definition in a
14902 shared lib. (I believe this is a generic
14903 bug in binutils handling of weak syms.)
14904 In these cases we won't use the opd
14905 entry in this lib. */
14906 unresolved_reloc
= FALSE
;
14909 && r_type
== R_PPC64_ADDR64
14911 ? h
->elf
.type
== STT_GNU_IFUNC
14912 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14913 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14916 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14918 /* We need to relocate .opd contents for ld.so.
14919 Prelink also wants simple and consistent rules
14920 for relocs. This make all RELATIVE relocs have
14921 *r_offset equal to r_addend. */
14928 ? h
->elf
.type
== STT_GNU_IFUNC
14929 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14931 info
->callbacks
->einfo
14932 /* xgettext:c-format */
14933 (_("%H: %s for indirect "
14934 "function `%pT' unsupported\n"),
14935 input_bfd
, input_section
, rel
->r_offset
,
14936 ppc64_elf_howto_table
[r_type
]->name
,
14940 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14942 else if (sec
== NULL
|| sec
->owner
== NULL
)
14944 bfd_set_error (bfd_error_bad_value
);
14951 osec
= sec
->output_section
;
14952 indx
= elf_section_data (osec
)->dynindx
;
14956 if ((osec
->flags
& SEC_READONLY
) == 0
14957 && htab
->elf
.data_index_section
!= NULL
)
14958 osec
= htab
->elf
.data_index_section
;
14960 osec
= htab
->elf
.text_index_section
;
14961 indx
= elf_section_data (osec
)->dynindx
;
14963 BFD_ASSERT (indx
!= 0);
14965 /* We are turning this relocation into one
14966 against a section symbol, so subtract out
14967 the output section's address but not the
14968 offset of the input section in the output
14970 outrel
.r_addend
-= osec
->vma
;
14973 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14977 sreloc
= elf_section_data (input_section
)->sreloc
;
14979 ? h
->elf
.type
== STT_GNU_IFUNC
14980 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14982 sreloc
= htab
->elf
.irelplt
;
14984 htab
->local_ifunc_resolver
= 1;
14985 else if (is_static_defined (&h
->elf
))
14986 htab
->maybe_local_ifunc_resolver
= 1;
14988 if (sreloc
== NULL
)
14991 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14994 loc
= sreloc
->contents
;
14995 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14996 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14998 /* If this reloc is against an external symbol, it will
14999 be computed at runtime, so there's no need to do
15000 anything now. However, for the sake of prelink ensure
15001 that the section contents are a known value. */
15004 unresolved_reloc
= FALSE
;
15005 /* The value chosen here is quite arbitrary as ld.so
15006 ignores section contents except for the special
15007 case of .opd where the contents might be accessed
15008 before relocation. Choose zero, as that won't
15009 cause reloc overflow. */
15012 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15013 to improve backward compatibility with older
15015 if (r_type
== R_PPC64_ADDR64
)
15016 addend
= outrel
.r_addend
;
15017 /* Adjust pc_relative relocs to have zero in *r_offset. */
15018 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15019 addend
= outrel
.r_offset
;
15025 case R_PPC64_GLOB_DAT
:
15026 case R_PPC64_JMP_SLOT
:
15027 case R_PPC64_JMP_IREL
:
15028 case R_PPC64_RELATIVE
:
15029 /* We shouldn't ever see these dynamic relocs in relocatable
15031 /* Fall through. */
15033 case R_PPC64_PLTGOT16
:
15034 case R_PPC64_PLTGOT16_DS
:
15035 case R_PPC64_PLTGOT16_HA
:
15036 case R_PPC64_PLTGOT16_HI
:
15037 case R_PPC64_PLTGOT16_LO
:
15038 case R_PPC64_PLTGOT16_LO_DS
:
15039 case R_PPC64_PLTREL32
:
15040 case R_PPC64_PLTREL64
:
15041 /* These ones haven't been implemented yet. */
15043 info
->callbacks
->einfo
15044 /* xgettext:c-format */
15045 (_("%P: %pB: %s is not supported for `%pT'\n"),
15047 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15049 bfd_set_error (bfd_error_invalid_operation
);
15054 /* Multi-instruction sequences that access the TOC can be
15055 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15056 to nop; addi rb,r2,x; */
15062 case R_PPC64_GOT_TLSLD16_HI
:
15063 case R_PPC64_GOT_TLSGD16_HI
:
15064 case R_PPC64_GOT_TPREL16_HI
:
15065 case R_PPC64_GOT_DTPREL16_HI
:
15066 case R_PPC64_GOT16_HI
:
15067 case R_PPC64_TOC16_HI
:
15068 /* These relocs would only be useful if building up an
15069 offset to later add to r2, perhaps in an indexed
15070 addressing mode instruction. Don't try to optimize.
15071 Unfortunately, the possibility of someone building up an
15072 offset like this or even with the HA relocs, means that
15073 we need to check the high insn when optimizing the low
15077 case R_PPC64_GOT_TLSLD16_HA
:
15078 case R_PPC64_GOT_TLSGD16_HA
:
15079 case R_PPC64_GOT_TPREL16_HA
:
15080 case R_PPC64_GOT_DTPREL16_HA
:
15081 case R_PPC64_GOT16_HA
:
15082 case R_PPC64_TOC16_HA
:
15083 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15084 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15086 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15087 bfd_put_32 (input_bfd
, NOP
, p
);
15092 case R_PPC64_GOT_TLSLD16_LO
:
15093 case R_PPC64_GOT_TLSGD16_LO
:
15094 case R_PPC64_GOT_TPREL16_LO_DS
:
15095 case R_PPC64_GOT_DTPREL16_LO_DS
:
15096 case R_PPC64_GOT16_LO
:
15097 case R_PPC64_GOT16_LO_DS
:
15098 case R_PPC64_TOC16_LO
:
15099 case R_PPC64_TOC16_LO_DS
:
15100 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15101 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15103 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15104 insn
= bfd_get_32 (input_bfd
, p
);
15105 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15107 /* Transform addic to addi when we change reg. */
15108 insn
&= ~((0x3f << 26) | (0x1f << 16));
15109 insn
|= (14u << 26) | (2 << 16);
15113 insn
&= ~(0x1f << 16);
15116 bfd_put_32 (input_bfd
, insn
, p
);
15120 case R_PPC64_TPREL16_HA
:
15121 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15123 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15124 insn
= bfd_get_32 (input_bfd
, p
);
15125 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15126 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15127 /* xgettext:c-format */
15128 info
->callbacks
->minfo
15129 (_("%H: warning: %s unexpected insn %#x.\n"),
15130 input_bfd
, input_section
, rel
->r_offset
,
15131 ppc64_elf_howto_table
[r_type
]->name
, insn
);
15134 bfd_put_32 (input_bfd
, NOP
, p
);
15140 case R_PPC64_TPREL16_LO
:
15141 case R_PPC64_TPREL16_LO_DS
:
15142 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15144 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15145 insn
= bfd_get_32 (input_bfd
, p
);
15146 insn
&= ~(0x1f << 16);
15148 bfd_put_32 (input_bfd
, insn
, p
);
15153 /* Do any further special processing. */
15159 case R_PPC64_REL16_HA
:
15160 case R_PPC64_REL16DX_HA
:
15161 case R_PPC64_ADDR16_HA
:
15162 case R_PPC64_ADDR16_HIGHA
:
15163 case R_PPC64_ADDR16_HIGHERA
:
15164 case R_PPC64_ADDR16_HIGHESTA
:
15165 case R_PPC64_TOC16_HA
:
15166 case R_PPC64_SECTOFF_HA
:
15167 case R_PPC64_TPREL16_HA
:
15168 case R_PPC64_TPREL16_HIGHA
:
15169 case R_PPC64_TPREL16_HIGHERA
:
15170 case R_PPC64_TPREL16_HIGHESTA
:
15171 case R_PPC64_DTPREL16_HA
:
15172 case R_PPC64_DTPREL16_HIGHA
:
15173 case R_PPC64_DTPREL16_HIGHERA
:
15174 case R_PPC64_DTPREL16_HIGHESTA
:
15175 /* It's just possible that this symbol is a weak symbol
15176 that's not actually defined anywhere. In that case,
15177 'sec' would be NULL, and we should leave the symbol
15178 alone (it will be set to zero elsewhere in the link). */
15181 /* Fall through. */
15183 case R_PPC64_GOT16_HA
:
15184 case R_PPC64_PLTGOT16_HA
:
15185 case R_PPC64_PLT16_HA
:
15186 case R_PPC64_GOT_TLSGD16_HA
:
15187 case R_PPC64_GOT_TLSLD16_HA
:
15188 case R_PPC64_GOT_TPREL16_HA
:
15189 case R_PPC64_GOT_DTPREL16_HA
:
15190 /* Add 0x10000 if sign bit in 0:15 is set.
15191 Bits 0:15 are not used. */
15195 case R_PPC64_ADDR16_DS
:
15196 case R_PPC64_ADDR16_LO_DS
:
15197 case R_PPC64_GOT16_DS
:
15198 case R_PPC64_GOT16_LO_DS
:
15199 case R_PPC64_PLT16_LO_DS
:
15200 case R_PPC64_SECTOFF_DS
:
15201 case R_PPC64_SECTOFF_LO_DS
:
15202 case R_PPC64_TOC16_DS
:
15203 case R_PPC64_TOC16_LO_DS
:
15204 case R_PPC64_PLTGOT16_DS
:
15205 case R_PPC64_PLTGOT16_LO_DS
:
15206 case R_PPC64_GOT_TPREL16_DS
:
15207 case R_PPC64_GOT_TPREL16_LO_DS
:
15208 case R_PPC64_GOT_DTPREL16_DS
:
15209 case R_PPC64_GOT_DTPREL16_LO_DS
:
15210 case R_PPC64_TPREL16_DS
:
15211 case R_PPC64_TPREL16_LO_DS
:
15212 case R_PPC64_DTPREL16_DS
:
15213 case R_PPC64_DTPREL16_LO_DS
:
15214 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15216 /* If this reloc is against an lq, lxv, or stxv insn, then
15217 the value must be a multiple of 16. This is somewhat of
15218 a hack, but the "correct" way to do this by defining _DQ
15219 forms of all the _DS relocs bloats all reloc switches in
15220 this file. It doesn't make much sense to use these
15221 relocs in data, so testing the insn should be safe. */
15222 if ((insn
& (0x3f << 26)) == (56u << 26)
15223 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15225 relocation
+= addend
;
15226 addend
= insn
& (mask
^ 3);
15227 if ((relocation
& mask
) != 0)
15229 relocation
^= relocation
& mask
;
15230 info
->callbacks
->einfo
15231 /* xgettext:c-format */
15232 (_("%H: error: %s not a multiple of %u\n"),
15233 input_bfd
, input_section
, rel
->r_offset
,
15234 ppc64_elf_howto_table
[r_type
]->name
,
15236 bfd_set_error (bfd_error_bad_value
);
15243 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15244 because such sections are not SEC_ALLOC and thus ld.so will
15245 not process them. */
15246 howto
= ppc64_elf_howto_table
[(int) r_type
];
15247 if (unresolved_reloc
15248 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15249 && h
->elf
.def_dynamic
)
15250 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15251 rel
->r_offset
) != (bfd_vma
) -1)
15253 info
->callbacks
->einfo
15254 /* xgettext:c-format */
15255 (_("%H: unresolvable %s against `%pT'\n"),
15256 input_bfd
, input_section
, rel
->r_offset
,
15258 h
->elf
.root
.root
.string
);
15262 /* 16-bit fields in insns mostly have signed values, but a
15263 few insns have 16-bit unsigned values. Really, we should
15264 have different reloc types. */
15265 if (howto
->complain_on_overflow
!= complain_overflow_dont
15266 && howto
->dst_mask
== 0xffff
15267 && (input_section
->flags
& SEC_CODE
) != 0)
15269 enum complain_overflow complain
= complain_overflow_signed
;
15271 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15272 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15273 complain
= complain_overflow_bitfield
;
15274 else if (howto
->rightshift
== 0
15275 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15276 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15277 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15278 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15279 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15280 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15281 complain
= complain_overflow_unsigned
;
15282 if (howto
->complain_on_overflow
!= complain
)
15284 alt_howto
= *howto
;
15285 alt_howto
.complain_on_overflow
= complain
;
15286 howto
= &alt_howto
;
15290 if (r_type
== R_PPC64_REL16DX_HA
)
15292 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15293 if (rel
->r_offset
+ 4 > input_section
->size
)
15294 r
= bfd_reloc_outofrange
;
15297 relocation
+= addend
;
15298 relocation
-= (rel
->r_offset
15299 + input_section
->output_offset
15300 + input_section
->output_section
->vma
);
15301 relocation
= (bfd_signed_vma
) relocation
>> 16;
15302 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15304 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15305 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15307 if (relocation
+ 0x8000 > 0xffff)
15308 r
= bfd_reloc_overflow
;
15312 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15313 rel
->r_offset
, relocation
, addend
);
15315 if (r
!= bfd_reloc_ok
)
15317 char *more_info
= NULL
;
15318 const char *reloc_name
= howto
->name
;
15320 if (reloc_dest
!= DEST_NORMAL
)
15322 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15323 if (more_info
!= NULL
)
15325 strcpy (more_info
, reloc_name
);
15326 strcat (more_info
, (reloc_dest
== DEST_OPD
15327 ? " (OPD)" : " (stub)"));
15328 reloc_name
= more_info
;
15332 if (r
== bfd_reloc_overflow
)
15334 /* On code like "if (foo) foo();" don't report overflow
15335 on a branch to zero when foo is undefined. */
15337 && (reloc_dest
== DEST_STUB
15339 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15340 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15341 && is_branch_reloc (r_type
))))
15342 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15343 sym_name
, reloc_name
,
15345 input_bfd
, input_section
,
15350 info
->callbacks
->einfo
15351 /* xgettext:c-format */
15352 (_("%H: %s against `%pT': error %d\n"),
15353 input_bfd
, input_section
, rel
->r_offset
,
15354 reloc_name
, sym_name
, (int) r
);
15357 if (more_info
!= NULL
)
15367 Elf_Internal_Shdr
*rel_hdr
;
15368 size_t deleted
= rel
- wrel
;
15370 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15371 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15372 if (rel_hdr
->sh_size
== 0)
15374 /* It is too late to remove an empty reloc section. Leave
15376 ??? What is wrong with an empty section??? */
15377 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15380 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15381 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15382 input_section
->reloc_count
-= deleted
;
15385 /* If we're emitting relocations, then shortly after this function
15386 returns, reloc offsets and addends for this section will be
15387 adjusted. Worse, reloc symbol indices will be for the output
15388 file rather than the input. Save a copy of the relocs for
15389 opd_entry_value. */
15390 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15393 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15394 rel
= bfd_alloc (input_bfd
, amt
);
15395 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15396 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15399 memcpy (rel
, relocs
, amt
);
15404 /* Adjust the value of any local symbols in opd sections. */
15407 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15408 const char *name ATTRIBUTE_UNUSED
,
15409 Elf_Internal_Sym
*elfsym
,
15410 asection
*input_sec
,
15411 struct elf_link_hash_entry
*h
)
15413 struct _opd_sec_data
*opd
;
15420 opd
= get_opd_info (input_sec
);
15421 if (opd
== NULL
|| opd
->adjust
== NULL
)
15424 value
= elfsym
->st_value
- input_sec
->output_offset
;
15425 if (!bfd_link_relocatable (info
))
15426 value
-= input_sec
->output_section
->vma
;
15428 adjust
= opd
->adjust
[OPD_NDX (value
)];
15432 elfsym
->st_value
+= adjust
;
15436 /* Finish up dynamic symbol handling. We set the contents of various
15437 dynamic sections here. */
15440 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15441 struct bfd_link_info
*info
,
15442 struct elf_link_hash_entry
*h
,
15443 Elf_Internal_Sym
*sym
)
15445 struct ppc_link_hash_table
*htab
;
15446 struct plt_entry
*ent
;
15447 Elf_Internal_Rela rela
;
15450 htab
= ppc_hash_table (info
);
15454 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15455 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15457 /* This symbol has an entry in the procedure linkage
15458 table. Set it up. */
15459 if (!htab
->elf
.dynamic_sections_created
15460 || h
->dynindx
== -1)
15462 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15464 && (h
->root
.type
== bfd_link_hash_defined
15465 || h
->root
.type
== bfd_link_hash_defweak
));
15466 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15467 + htab
->elf
.iplt
->output_offset
15468 + ent
->plt
.offset
);
15470 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15472 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15473 rela
.r_addend
= (h
->root
.u
.def
.value
15474 + h
->root
.u
.def
.section
->output_offset
15475 + h
->root
.u
.def
.section
->output_section
->vma
15477 loc
= (htab
->elf
.irelplt
->contents
15478 + (htab
->elf
.irelplt
->reloc_count
++
15479 * sizeof (Elf64_External_Rela
)));
15480 htab
->local_ifunc_resolver
= 1;
15484 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15485 + htab
->elf
.splt
->output_offset
15486 + ent
->plt
.offset
);
15487 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15488 rela
.r_addend
= ent
->addend
;
15489 loc
= (htab
->elf
.srelplt
->contents
15490 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15491 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15492 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15493 htab
->maybe_local_ifunc_resolver
= 1;
15495 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15497 if (!htab
->opd_abi
)
15499 if (!h
->def_regular
)
15501 /* Mark the symbol as undefined, rather than as
15502 defined in glink. Leave the value if there were
15503 any relocations where pointer equality matters
15504 (this is a clue for the dynamic linker, to make
15505 function pointer comparisons work between an
15506 application and shared library), otherwise set it
15508 sym
->st_shndx
= SHN_UNDEF
;
15509 if (!h
->pointer_equality_needed
)
15511 else if (!h
->ref_regular_nonweak
)
15513 /* This breaks function pointer comparisons, but
15514 that is better than breaking tests for a NULL
15515 function pointer. */
15524 /* This symbol needs a copy reloc. Set it up. */
15527 if (h
->dynindx
== -1
15528 || (h
->root
.type
!= bfd_link_hash_defined
15529 && h
->root
.type
!= bfd_link_hash_defweak
)
15530 || htab
->elf
.srelbss
== NULL
15531 || htab
->elf
.sreldynrelro
== NULL
)
15534 rela
.r_offset
= (h
->root
.u
.def
.value
15535 + h
->root
.u
.def
.section
->output_section
->vma
15536 + h
->root
.u
.def
.section
->output_offset
);
15537 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15539 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15540 srel
= htab
->elf
.sreldynrelro
;
15542 srel
= htab
->elf
.srelbss
;
15543 loc
= srel
->contents
;
15544 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15545 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15551 /* Used to decide how to sort relocs in an optimal manner for the
15552 dynamic linker, before writing them out. */
15554 static enum elf_reloc_type_class
15555 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15556 const asection
*rel_sec
,
15557 const Elf_Internal_Rela
*rela
)
15559 enum elf_ppc64_reloc_type r_type
;
15560 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15562 if (rel_sec
== htab
->elf
.irelplt
)
15563 return reloc_class_ifunc
;
15565 r_type
= ELF64_R_TYPE (rela
->r_info
);
15568 case R_PPC64_RELATIVE
:
15569 return reloc_class_relative
;
15570 case R_PPC64_JMP_SLOT
:
15571 return reloc_class_plt
;
15573 return reloc_class_copy
;
15575 return reloc_class_normal
;
15579 /* Finish up the dynamic sections. */
15582 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15583 struct bfd_link_info
*info
)
15585 struct ppc_link_hash_table
*htab
;
15589 htab
= ppc_hash_table (info
);
15593 dynobj
= htab
->elf
.dynobj
;
15594 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15596 if (htab
->elf
.dynamic_sections_created
)
15598 Elf64_External_Dyn
*dyncon
, *dynconend
;
15600 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15603 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15604 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15605 for (; dyncon
< dynconend
; dyncon
++)
15607 Elf_Internal_Dyn dyn
;
15610 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15617 case DT_PPC64_GLINK
:
15619 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15620 /* We stupidly defined DT_PPC64_GLINK to be the start
15621 of glink rather than the first entry point, which is
15622 what ld.so needs, and now have a bigger stub to
15623 support automatic multiple TOCs. */
15624 dyn
.d_un
.d_ptr
+= GLINK_PLTRESOLVE_SIZE (htab
) - 8 * 4;
15628 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15631 dyn
.d_un
.d_ptr
= s
->vma
;
15635 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15636 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15637 if (htab
->has_plt_localentry0
)
15638 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15641 case DT_PPC64_OPDSZ
:
15642 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15645 dyn
.d_un
.d_val
= s
->size
;
15649 s
= htab
->elf
.splt
;
15650 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15654 s
= htab
->elf
.srelplt
;
15655 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15659 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15663 if (htab
->local_ifunc_resolver
)
15664 info
->callbacks
->einfo
15665 (_("%X%P: text relocations and GNU indirect "
15666 "functions will result in a segfault at runtime\n"));
15667 else if (htab
->maybe_local_ifunc_resolver
)
15668 info
->callbacks
->einfo
15669 (_("%P: warning: text relocations and GNU indirect "
15670 "functions may result in a segfault at runtime\n"));
15674 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15678 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15679 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15681 /* Fill in the first entry in the global offset table.
15682 We use it to hold the link-time TOCbase. */
15683 bfd_put_64 (output_bfd
,
15684 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15685 htab
->elf
.sgot
->contents
);
15687 /* Set .got entry size. */
15688 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15691 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15692 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15694 /* Set .plt entry size. */
15695 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15696 = PLT_ENTRY_SIZE (htab
);
15699 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15700 brlt ourselves if emitrelocations. */
15701 if (htab
->brlt
!= NULL
15702 && htab
->brlt
->reloc_count
!= 0
15703 && !_bfd_elf_link_output_relocs (output_bfd
,
15705 elf_section_data (htab
->brlt
)->rela
.hdr
,
15706 elf_section_data (htab
->brlt
)->relocs
,
15710 if (htab
->glink
!= NULL
15711 && htab
->glink
->reloc_count
!= 0
15712 && !_bfd_elf_link_output_relocs (output_bfd
,
15714 elf_section_data (htab
->glink
)->rela
.hdr
,
15715 elf_section_data (htab
->glink
)->relocs
,
15719 if (htab
->glink_eh_frame
!= NULL
15720 && htab
->glink_eh_frame
->size
!= 0)
15724 struct map_stub
*group
;
15727 p
= htab
->glink_eh_frame
->contents
;
15728 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15730 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15731 if (group
->stub_sec
!= NULL
)
15733 /* Offset to stub section. */
15734 val
= (group
->stub_sec
->output_section
->vma
15735 + group
->stub_sec
->output_offset
);
15736 val
-= (htab
->glink_eh_frame
->output_section
->vma
15737 + htab
->glink_eh_frame
->output_offset
15738 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15739 if (val
+ 0x80000000 > 0xffffffff)
15742 (_("%s offset too large for .eh_frame sdata4 encoding"),
15743 group
->stub_sec
->name
);
15746 bfd_put_32 (dynobj
, val
, p
+ 8);
15747 p
+= stub_eh_frame_size (group
, align
);
15749 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15751 /* Offset to .glink. */
15752 val
= (htab
->glink
->output_section
->vma
15753 + htab
->glink
->output_offset
15755 val
-= (htab
->glink_eh_frame
->output_section
->vma
15756 + htab
->glink_eh_frame
->output_offset
15757 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15758 if (val
+ 0x80000000 > 0xffffffff)
15761 (_("%s offset too large for .eh_frame sdata4 encoding"),
15762 htab
->glink
->name
);
15765 bfd_put_32 (dynobj
, val
, p
+ 8);
15766 p
+= (24 + align
- 1) & -align
;
15769 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15770 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15771 htab
->glink_eh_frame
,
15772 htab
->glink_eh_frame
->contents
))
15776 /* We need to handle writing out multiple GOT sections ourselves,
15777 since we didn't add them to DYNOBJ. We know dynobj is the first
15779 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15783 if (!is_ppc64_elf (dynobj
))
15786 s
= ppc64_elf_tdata (dynobj
)->got
;
15789 && s
->output_section
!= bfd_abs_section_ptr
15790 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15791 s
->contents
, s
->output_offset
,
15794 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15797 && s
->output_section
!= bfd_abs_section_ptr
15798 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15799 s
->contents
, s
->output_offset
,
15807 #include "elf64-target.h"
15809 /* FreeBSD support */
15811 #undef TARGET_LITTLE_SYM
15812 #undef TARGET_LITTLE_NAME
15814 #undef TARGET_BIG_SYM
15815 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15816 #undef TARGET_BIG_NAME
15817 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15820 #define ELF_OSABI ELFOSABI_FREEBSD
15823 #define elf64_bed elf64_powerpc_fbsd_bed
15825 #include "elf64-target.h"