1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_dtrel_excludes_plt 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
85 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
86 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
87 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_before_check_relocs
99 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
112 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
113 #define elf_backend_action_discarded ppc64_elf_action_discarded
114 #define elf_backend_relocate_section ppc64_elf_relocate_section
115 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
116 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
117 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
118 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
119 #define elf_backend_special_sections ppc64_elf_special_sections
120 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
122 /* The name of the dynamic interpreter. This is put in the .interp
124 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
126 /* The size in bytes of an entry in the procedure linkage table. */
127 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
129 /* The initial size of the plt reserved for the dynamic linker. */
130 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
132 /* Offsets to some stack save slots. */
134 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
135 /* This one is dodgy. ELFv2 does not have a linker word, so use the
136 CR save slot. Used only by optimised __tls_get_addr call stub,
137 relying on __tls_get_addr_opt not saving CR.. */
138 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
140 /* TOC base pointers offset from start of TOC. */
141 #define TOC_BASE_OFF 0x8000
142 /* TOC base alignment. */
143 #define TOC_BASE_ALIGN 256
145 /* Offset of tp and dtp pointers from start of TLS block. */
146 #define TP_OFFSET 0x7000
147 #define DTP_OFFSET 0x8000
149 /* .plt call stub instructions. The normal stub is like this, but
150 sometimes the .plt entry crosses a 64k boundary and we need to
151 insert an addi to adjust r11. */
152 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
153 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
154 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
155 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
156 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
157 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
158 #define BCTR 0x4e800420 /* bctr */
160 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
161 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
162 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
164 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
165 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
166 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
167 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
168 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
169 #define BNECTR 0x4ca20420 /* bnectr+ */
170 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
172 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
173 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
174 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
176 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
177 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
178 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
180 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
181 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
182 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
183 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
184 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
186 /* glink call stub instructions. We enter with the index in R0. */
187 #define GLINK_CALL_STUB_SIZE (16*4)
191 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
192 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
194 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
195 /* ld %2,(0b-1b)(%11) */
196 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
197 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
203 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
204 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
205 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
206 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
207 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
210 #define NOP 0x60000000
212 /* Some other nops. */
213 #define CROR_151515 0x4def7b82
214 #define CROR_313131 0x4ffffb82
216 /* .glink entries for the first 32k functions are two instructions. */
217 #define LI_R0_0 0x38000000 /* li %r0,0 */
218 #define B_DOT 0x48000000 /* b . */
220 /* After that, we need two instructions to load the index, followed by
222 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
223 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
225 /* Instructions used by the save and restore reg functions. */
226 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
227 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
228 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
229 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
230 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
231 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
232 #define LI_R12_0 0x39800000 /* li %r12,0 */
233 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
234 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
235 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
236 #define BLR 0x4e800020 /* blr */
238 /* Since .opd is an array of descriptors and each entry will end up
239 with identical R_PPC64_RELATIVE relocs, there is really no need to
240 propagate .opd relocs; The dynamic linker should be taught to
241 relocate .opd without reloc entries. */
242 #ifndef NO_OPD_RELOCS
243 #define NO_OPD_RELOCS 0
247 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
251 abiversion (bfd
*abfd
)
253 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
257 set_abiversion (bfd
*abfd
, int ver
)
259 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
260 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
263 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
265 /* Relocation HOWTO's. */
266 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
268 static reloc_howto_type ppc64_elf_howto_raw
[] = {
269 /* This reloc does nothing. */
270 HOWTO (R_PPC64_NONE
, /* type */
272 3, /* size (0 = byte, 1 = short, 2 = long) */
274 FALSE
, /* pc_relative */
276 complain_overflow_dont
, /* complain_on_overflow */
277 bfd_elf_generic_reloc
, /* special_function */
278 "R_PPC64_NONE", /* name */
279 FALSE
, /* partial_inplace */
282 FALSE
), /* pcrel_offset */
284 /* A standard 32 bit relocation. */
285 HOWTO (R_PPC64_ADDR32
, /* type */
287 2, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE
, /* pc_relative */
291 complain_overflow_bitfield
, /* complain_on_overflow */
292 bfd_elf_generic_reloc
, /* special_function */
293 "R_PPC64_ADDR32", /* name */
294 FALSE
, /* partial_inplace */
296 0xffffffff, /* dst_mask */
297 FALSE
), /* pcrel_offset */
299 /* An absolute 26 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC64_ADDR24
, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_bitfield
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_PPC64_ADDR24", /* name */
310 FALSE
, /* partial_inplace */
312 0x03fffffc, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 /* A standard 16 bit relocation. */
316 HOWTO (R_PPC64_ADDR16
, /* type */
318 1, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE
, /* pc_relative */
322 complain_overflow_bitfield
, /* complain_on_overflow */
323 bfd_elf_generic_reloc
, /* special_function */
324 "R_PPC64_ADDR16", /* name */
325 FALSE
, /* partial_inplace */
327 0xffff, /* dst_mask */
328 FALSE
), /* pcrel_offset */
330 /* A 16 bit relocation without overflow. */
331 HOWTO (R_PPC64_ADDR16_LO
, /* type */
333 1, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE
, /* pc_relative */
337 complain_overflow_dont
,/* complain_on_overflow */
338 bfd_elf_generic_reloc
, /* special_function */
339 "R_PPC64_ADDR16_LO", /* name */
340 FALSE
, /* partial_inplace */
342 0xffff, /* dst_mask */
343 FALSE
), /* pcrel_offset */
345 /* Bits 16-31 of an address. */
346 HOWTO (R_PPC64_ADDR16_HI
, /* type */
348 1, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE
, /* pc_relative */
352 complain_overflow_signed
, /* complain_on_overflow */
353 bfd_elf_generic_reloc
, /* special_function */
354 "R_PPC64_ADDR16_HI", /* name */
355 FALSE
, /* partial_inplace */
357 0xffff, /* dst_mask */
358 FALSE
), /* pcrel_offset */
360 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
361 bits, treated as a signed number, is negative. */
362 HOWTO (R_PPC64_ADDR16_HA
, /* type */
364 1, /* size (0 = byte, 1 = short, 2 = long) */
366 FALSE
, /* pc_relative */
368 complain_overflow_signed
, /* complain_on_overflow */
369 ppc64_elf_ha_reloc
, /* special_function */
370 "R_PPC64_ADDR16_HA", /* name */
371 FALSE
, /* partial_inplace */
373 0xffff, /* dst_mask */
374 FALSE
), /* pcrel_offset */
376 /* An absolute 16 bit branch; the lower two bits must be zero.
377 FIXME: we don't check that, we just clear them. */
378 HOWTO (R_PPC64_ADDR14
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 FALSE
, /* pc_relative */
384 complain_overflow_signed
, /* complain_on_overflow */
385 ppc64_elf_branch_reloc
, /* special_function */
386 "R_PPC64_ADDR14", /* name */
387 FALSE
, /* partial_inplace */
389 0x0000fffc, /* dst_mask */
390 FALSE
), /* pcrel_offset */
392 /* An absolute 16 bit branch, for which bit 10 should be set to
393 indicate that the branch is expected to be taken. The lower two
394 bits must be zero. */
395 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE
, /* pc_relative */
401 complain_overflow_signed
, /* complain_on_overflow */
402 ppc64_elf_brtaken_reloc
, /* special_function */
403 "R_PPC64_ADDR14_BRTAKEN",/* name */
404 FALSE
, /* partial_inplace */
406 0x0000fffc, /* dst_mask */
407 FALSE
), /* pcrel_offset */
409 /* An absolute 16 bit branch, for which bit 10 should be set to
410 indicate that the branch is not expected to be taken. The lower
411 two bits must be zero. */
412 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
416 FALSE
, /* pc_relative */
418 complain_overflow_signed
, /* complain_on_overflow */
419 ppc64_elf_brtaken_reloc
, /* special_function */
420 "R_PPC64_ADDR14_BRNTAKEN",/* name */
421 FALSE
, /* partial_inplace */
423 0x0000fffc, /* dst_mask */
424 FALSE
), /* pcrel_offset */
426 /* A relative 26 bit branch; the lower two bits must be zero. */
427 HOWTO (R_PPC64_REL24
, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE
, /* pc_relative */
433 complain_overflow_signed
, /* complain_on_overflow */
434 ppc64_elf_branch_reloc
, /* special_function */
435 "R_PPC64_REL24", /* name */
436 FALSE
, /* partial_inplace */
438 0x03fffffc, /* dst_mask */
439 TRUE
), /* pcrel_offset */
441 /* A relative 16 bit branch; the lower two bits must be zero. */
442 HOWTO (R_PPC64_REL14
, /* type */
444 2, /* size (0 = byte, 1 = short, 2 = long) */
446 TRUE
, /* pc_relative */
448 complain_overflow_signed
, /* complain_on_overflow */
449 ppc64_elf_branch_reloc
, /* special_function */
450 "R_PPC64_REL14", /* name */
451 FALSE
, /* partial_inplace */
453 0x0000fffc, /* dst_mask */
454 TRUE
), /* pcrel_offset */
456 /* A relative 16 bit branch. Bit 10 should be set to indicate that
457 the branch is expected to be taken. The lower two bits must be
459 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
461 2, /* size (0 = byte, 1 = short, 2 = long) */
463 TRUE
, /* pc_relative */
465 complain_overflow_signed
, /* complain_on_overflow */
466 ppc64_elf_brtaken_reloc
, /* special_function */
467 "R_PPC64_REL14_BRTAKEN", /* name */
468 FALSE
, /* partial_inplace */
470 0x0000fffc, /* dst_mask */
471 TRUE
), /* pcrel_offset */
473 /* A relative 16 bit branch. Bit 10 should be set to indicate that
474 the branch is not expected to be taken. The lower two bits must
476 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 TRUE
, /* pc_relative */
482 complain_overflow_signed
, /* complain_on_overflow */
483 ppc64_elf_brtaken_reloc
, /* special_function */
484 "R_PPC64_REL14_BRNTAKEN",/* name */
485 FALSE
, /* partial_inplace */
487 0x0000fffc, /* dst_mask */
488 TRUE
), /* pcrel_offset */
490 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
492 HOWTO (R_PPC64_GOT16
, /* type */
494 1, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_signed
, /* complain_on_overflow */
499 ppc64_elf_unhandled_reloc
, /* special_function */
500 "R_PPC64_GOT16", /* name */
501 FALSE
, /* partial_inplace */
503 0xffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
508 HOWTO (R_PPC64_GOT16_LO
, /* type */
510 1, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE
, /* pc_relative */
514 complain_overflow_dont
, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc
, /* special_function */
516 "R_PPC64_GOT16_LO", /* name */
517 FALSE
, /* partial_inplace */
519 0xffff, /* dst_mask */
520 FALSE
), /* pcrel_offset */
522 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
524 HOWTO (R_PPC64_GOT16_HI
, /* type */
526 1, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE
, /* pc_relative */
530 complain_overflow_signed
,/* complain_on_overflow */
531 ppc64_elf_unhandled_reloc
, /* special_function */
532 "R_PPC64_GOT16_HI", /* name */
533 FALSE
, /* partial_inplace */
535 0xffff, /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
540 HOWTO (R_PPC64_GOT16_HA
, /* type */
542 1, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE
, /* pc_relative */
546 complain_overflow_signed
,/* complain_on_overflow */
547 ppc64_elf_unhandled_reloc
, /* special_function */
548 "R_PPC64_GOT16_HA", /* name */
549 FALSE
, /* partial_inplace */
551 0xffff, /* dst_mask */
552 FALSE
), /* pcrel_offset */
554 /* This is used only by the dynamic linker. The symbol should exist
555 both in the object being run and in some shared library. The
556 dynamic linker copies the data addressed by the symbol from the
557 shared library into the object, because the object being
558 run has to have the data at some particular address. */
559 HOWTO (R_PPC64_COPY
, /* type */
561 0, /* this one is variable size */
563 FALSE
, /* pc_relative */
565 complain_overflow_dont
, /* complain_on_overflow */
566 ppc64_elf_unhandled_reloc
, /* special_function */
567 "R_PPC64_COPY", /* name */
568 FALSE
, /* partial_inplace */
571 FALSE
), /* pcrel_offset */
573 /* Like R_PPC64_ADDR64, but used when setting global offset table
575 HOWTO (R_PPC64_GLOB_DAT
, /* type */
577 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
579 FALSE
, /* pc_relative */
581 complain_overflow_dont
, /* complain_on_overflow */
582 ppc64_elf_unhandled_reloc
, /* special_function */
583 "R_PPC64_GLOB_DAT", /* name */
584 FALSE
, /* partial_inplace */
586 ONES (64), /* dst_mask */
587 FALSE
), /* pcrel_offset */
589 /* Created by the link editor. Marks a procedure linkage table
590 entry for a symbol. */
591 HOWTO (R_PPC64_JMP_SLOT
, /* type */
593 0, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE
, /* pc_relative */
597 complain_overflow_dont
, /* complain_on_overflow */
598 ppc64_elf_unhandled_reloc
, /* special_function */
599 "R_PPC64_JMP_SLOT", /* name */
600 FALSE
, /* partial_inplace */
603 FALSE
), /* pcrel_offset */
605 /* Used only by the dynamic linker. When the object is run, this
606 doubleword64 is set to the load address of the object, plus the
608 HOWTO (R_PPC64_RELATIVE
, /* type */
610 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
612 FALSE
, /* pc_relative */
614 complain_overflow_dont
, /* complain_on_overflow */
615 bfd_elf_generic_reloc
, /* special_function */
616 "R_PPC64_RELATIVE", /* name */
617 FALSE
, /* partial_inplace */
619 ONES (64), /* dst_mask */
620 FALSE
), /* pcrel_offset */
622 /* Like R_PPC64_ADDR32, but may be unaligned. */
623 HOWTO (R_PPC64_UADDR32
, /* type */
625 2, /* size (0 = byte, 1 = short, 2 = long) */
627 FALSE
, /* pc_relative */
629 complain_overflow_bitfield
, /* complain_on_overflow */
630 bfd_elf_generic_reloc
, /* special_function */
631 "R_PPC64_UADDR32", /* name */
632 FALSE
, /* partial_inplace */
634 0xffffffff, /* dst_mask */
635 FALSE
), /* pcrel_offset */
637 /* Like R_PPC64_ADDR16, but may be unaligned. */
638 HOWTO (R_PPC64_UADDR16
, /* type */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
642 FALSE
, /* pc_relative */
644 complain_overflow_bitfield
, /* complain_on_overflow */
645 bfd_elf_generic_reloc
, /* special_function */
646 "R_PPC64_UADDR16", /* name */
647 FALSE
, /* partial_inplace */
649 0xffff, /* dst_mask */
650 FALSE
), /* pcrel_offset */
652 /* 32-bit PC relative. */
653 HOWTO (R_PPC64_REL32
, /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 TRUE
, /* pc_relative */
659 complain_overflow_signed
, /* complain_on_overflow */
660 bfd_elf_generic_reloc
, /* special_function */
661 "R_PPC64_REL32", /* name */
662 FALSE
, /* partial_inplace */
664 0xffffffff, /* dst_mask */
665 TRUE
), /* pcrel_offset */
667 /* 32-bit relocation to the symbol's procedure linkage table. */
668 HOWTO (R_PPC64_PLT32
, /* type */
670 2, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE
, /* pc_relative */
674 complain_overflow_bitfield
, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc
, /* special_function */
676 "R_PPC64_PLT32", /* name */
677 FALSE
, /* partial_inplace */
679 0xffffffff, /* dst_mask */
680 FALSE
), /* pcrel_offset */
682 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
683 FIXME: R_PPC64_PLTREL32 not supported. */
684 HOWTO (R_PPC64_PLTREL32
, /* type */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
688 TRUE
, /* pc_relative */
690 complain_overflow_signed
, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc
, /* special_function */
692 "R_PPC64_PLTREL32", /* name */
693 FALSE
, /* partial_inplace */
695 0xffffffff, /* dst_mask */
696 TRUE
), /* pcrel_offset */
698 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
700 HOWTO (R_PPC64_PLT16_LO
, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 FALSE
, /* pc_relative */
706 complain_overflow_dont
, /* complain_on_overflow */
707 ppc64_elf_unhandled_reloc
, /* special_function */
708 "R_PPC64_PLT16_LO", /* name */
709 FALSE
, /* partial_inplace */
711 0xffff, /* dst_mask */
712 FALSE
), /* pcrel_offset */
714 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
716 HOWTO (R_PPC64_PLT16_HI
, /* type */
718 1, /* size (0 = byte, 1 = short, 2 = long) */
720 FALSE
, /* pc_relative */
722 complain_overflow_signed
, /* complain_on_overflow */
723 ppc64_elf_unhandled_reloc
, /* special_function */
724 "R_PPC64_PLT16_HI", /* name */
725 FALSE
, /* partial_inplace */
727 0xffff, /* dst_mask */
728 FALSE
), /* pcrel_offset */
730 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
732 HOWTO (R_PPC64_PLT16_HA
, /* type */
734 1, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE
, /* pc_relative */
738 complain_overflow_signed
, /* complain_on_overflow */
739 ppc64_elf_unhandled_reloc
, /* special_function */
740 "R_PPC64_PLT16_HA", /* name */
741 FALSE
, /* partial_inplace */
743 0xffff, /* dst_mask */
744 FALSE
), /* pcrel_offset */
746 /* 16-bit section relative relocation. */
747 HOWTO (R_PPC64_SECTOFF
, /* type */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
751 FALSE
, /* pc_relative */
753 complain_overflow_signed
, /* complain_on_overflow */
754 ppc64_elf_sectoff_reloc
, /* special_function */
755 "R_PPC64_SECTOFF", /* name */
756 FALSE
, /* partial_inplace */
758 0xffff, /* dst_mask */
759 FALSE
), /* pcrel_offset */
761 /* Like R_PPC64_SECTOFF, but no overflow warning. */
762 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
764 1, /* size (0 = byte, 1 = short, 2 = long) */
766 FALSE
, /* pc_relative */
768 complain_overflow_dont
, /* complain_on_overflow */
769 ppc64_elf_sectoff_reloc
, /* special_function */
770 "R_PPC64_SECTOFF_LO", /* name */
771 FALSE
, /* partial_inplace */
773 0xffff, /* dst_mask */
774 FALSE
), /* pcrel_offset */
776 /* 16-bit upper half section relative relocation. */
777 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
781 FALSE
, /* pc_relative */
783 complain_overflow_signed
, /* complain_on_overflow */
784 ppc64_elf_sectoff_reloc
, /* special_function */
785 "R_PPC64_SECTOFF_HI", /* name */
786 FALSE
, /* partial_inplace */
788 0xffff, /* dst_mask */
789 FALSE
), /* pcrel_offset */
791 /* 16-bit upper half adjusted section relative relocation. */
792 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_signed
, /* complain_on_overflow */
799 ppc64_elf_sectoff_ha_reloc
, /* special_function */
800 "R_PPC64_SECTOFF_HA", /* name */
801 FALSE
, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE
), /* pcrel_offset */
806 /* Like R_PPC64_REL24 without touching the two least significant bits. */
807 HOWTO (R_PPC64_REL30
, /* type */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 TRUE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_PPC64_REL30", /* name */
816 FALSE
, /* partial_inplace */
818 0xfffffffc, /* dst_mask */
819 TRUE
), /* pcrel_offset */
821 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
823 /* A standard 64-bit relocation. */
824 HOWTO (R_PPC64_ADDR64
, /* type */
826 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
828 FALSE
, /* pc_relative */
830 complain_overflow_dont
, /* complain_on_overflow */
831 bfd_elf_generic_reloc
, /* special_function */
832 "R_PPC64_ADDR64", /* name */
833 FALSE
, /* partial_inplace */
835 ONES (64), /* dst_mask */
836 FALSE
), /* pcrel_offset */
838 /* The bits 32-47 of an address. */
839 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
841 1, /* size (0 = byte, 1 = short, 2 = long) */
843 FALSE
, /* pc_relative */
845 complain_overflow_dont
, /* complain_on_overflow */
846 bfd_elf_generic_reloc
, /* special_function */
847 "R_PPC64_ADDR16_HIGHER", /* name */
848 FALSE
, /* partial_inplace */
850 0xffff, /* dst_mask */
851 FALSE
), /* pcrel_offset */
853 /* The bits 32-47 of an address, plus 1 if the contents of the low
854 16 bits, treated as a signed number, is negative. */
855 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 FALSE
, /* pc_relative */
861 complain_overflow_dont
, /* complain_on_overflow */
862 ppc64_elf_ha_reloc
, /* special_function */
863 "R_PPC64_ADDR16_HIGHERA", /* name */
864 FALSE
, /* partial_inplace */
866 0xffff, /* dst_mask */
867 FALSE
), /* pcrel_offset */
869 /* The bits 48-63 of an address. */
870 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE
, /* pc_relative */
876 complain_overflow_dont
, /* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_PPC64_ADDR16_HIGHEST", /* name */
879 FALSE
, /* partial_inplace */
881 0xffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* The bits 48-63 of an address, plus 1 if the contents of the low
885 16 bits, treated as a signed number, is negative. */
886 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE
, /* pc_relative */
892 complain_overflow_dont
, /* complain_on_overflow */
893 ppc64_elf_ha_reloc
, /* special_function */
894 "R_PPC64_ADDR16_HIGHESTA", /* name */
895 FALSE
, /* partial_inplace */
897 0xffff, /* dst_mask */
898 FALSE
), /* pcrel_offset */
900 /* Like ADDR64, but may be unaligned. */
901 HOWTO (R_PPC64_UADDR64
, /* type */
903 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
905 FALSE
, /* pc_relative */
907 complain_overflow_dont
, /* complain_on_overflow */
908 bfd_elf_generic_reloc
, /* special_function */
909 "R_PPC64_UADDR64", /* name */
910 FALSE
, /* partial_inplace */
912 ONES (64), /* dst_mask */
913 FALSE
), /* pcrel_offset */
915 /* 64-bit relative relocation. */
916 HOWTO (R_PPC64_REL64
, /* type */
918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
920 TRUE
, /* pc_relative */
922 complain_overflow_dont
, /* complain_on_overflow */
923 bfd_elf_generic_reloc
, /* special_function */
924 "R_PPC64_REL64", /* name */
925 FALSE
, /* partial_inplace */
927 ONES (64), /* dst_mask */
928 TRUE
), /* pcrel_offset */
930 /* 64-bit relocation to the symbol's procedure linkage table. */
931 HOWTO (R_PPC64_PLT64
, /* type */
933 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
935 FALSE
, /* pc_relative */
937 complain_overflow_dont
, /* complain_on_overflow */
938 ppc64_elf_unhandled_reloc
, /* special_function */
939 "R_PPC64_PLT64", /* name */
940 FALSE
, /* partial_inplace */
942 ONES (64), /* dst_mask */
943 FALSE
), /* pcrel_offset */
945 /* 64-bit PC relative relocation to the symbol's procedure linkage
947 /* FIXME: R_PPC64_PLTREL64 not supported. */
948 HOWTO (R_PPC64_PLTREL64
, /* type */
950 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
952 TRUE
, /* pc_relative */
954 complain_overflow_dont
, /* complain_on_overflow */
955 ppc64_elf_unhandled_reloc
, /* special_function */
956 "R_PPC64_PLTREL64", /* name */
957 FALSE
, /* partial_inplace */
959 ONES (64), /* dst_mask */
960 TRUE
), /* pcrel_offset */
962 /* 16 bit TOC-relative relocation. */
964 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
965 HOWTO (R_PPC64_TOC16
, /* type */
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE
, /* pc_relative */
971 complain_overflow_signed
, /* complain_on_overflow */
972 ppc64_elf_toc_reloc
, /* special_function */
973 "R_PPC64_TOC16", /* name */
974 FALSE
, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE
), /* pcrel_offset */
979 /* 16 bit TOC-relative relocation without overflow. */
981 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
982 HOWTO (R_PPC64_TOC16_LO
, /* type */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE
, /* pc_relative */
988 complain_overflow_dont
, /* complain_on_overflow */
989 ppc64_elf_toc_reloc
, /* special_function */
990 "R_PPC64_TOC16_LO", /* name */
991 FALSE
, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE
), /* pcrel_offset */
996 /* 16 bit TOC-relative relocation, high 16 bits. */
998 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
999 HOWTO (R_PPC64_TOC16_HI
, /* type */
1000 16, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1003 FALSE
, /* pc_relative */
1005 complain_overflow_signed
, /* complain_on_overflow */
1006 ppc64_elf_toc_reloc
, /* special_function */
1007 "R_PPC64_TOC16_HI", /* name */
1008 FALSE
, /* partial_inplace */
1010 0xffff, /* dst_mask */
1011 FALSE
), /* pcrel_offset */
1013 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1014 contents of the low 16 bits, treated as a signed number, is
1017 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1018 HOWTO (R_PPC64_TOC16_HA
, /* type */
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE
, /* pc_relative */
1024 complain_overflow_signed
, /* complain_on_overflow */
1025 ppc64_elf_toc_ha_reloc
, /* special_function */
1026 "R_PPC64_TOC16_HA", /* name */
1027 FALSE
, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE
), /* pcrel_offset */
1032 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1034 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1035 HOWTO (R_PPC64_TOC
, /* type */
1037 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1039 FALSE
, /* pc_relative */
1041 complain_overflow_dont
, /* complain_on_overflow */
1042 ppc64_elf_toc64_reloc
, /* special_function */
1043 "R_PPC64_TOC", /* name */
1044 FALSE
, /* partial_inplace */
1046 ONES (64), /* dst_mask */
1047 FALSE
), /* pcrel_offset */
1049 /* Like R_PPC64_GOT16, but also informs the link editor that the
1050 value to relocate may (!) refer to a PLT entry which the link
1051 editor (a) may replace with the symbol value. If the link editor
1052 is unable to fully resolve the symbol, it may (b) create a PLT
1053 entry and store the address to the new PLT entry in the GOT.
1054 This permits lazy resolution of function symbols at run time.
1055 The link editor may also skip all of this and just (c) emit a
1056 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1057 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16
, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE
, /* pc_relative */
1064 complain_overflow_signed
, /* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc
, /* special_function */
1066 "R_PPC64_PLTGOT16", /* name */
1067 FALSE
, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE
), /* pcrel_offset */
1072 /* Like R_PPC64_PLTGOT16, but without overflow. */
1073 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1074 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_dont
, /* complain_on_overflow */
1081 ppc64_elf_unhandled_reloc
, /* special_function */
1082 "R_PPC64_PLTGOT16_LO", /* name */
1083 FALSE
, /* partial_inplace */
1085 0xffff, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1088 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1089 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1090 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_signed
, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc
, /* special_function */
1098 "R_PPC64_PLTGOT16_HI", /* name */
1099 FALSE
, /* partial_inplace */
1101 0xffff, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1105 1 if the contents of the low 16 bits, treated as a signed number,
1107 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1108 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1109 16, /* rightshift */
1110 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 FALSE
, /* pc_relative */
1114 complain_overflow_signed
, /* complain_on_overflow */
1115 ppc64_elf_unhandled_reloc
, /* special_function */
1116 "R_PPC64_PLTGOT16_HA", /* name */
1117 FALSE
, /* partial_inplace */
1119 0xffff, /* dst_mask */
1120 FALSE
), /* pcrel_offset */
1122 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1123 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1125 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 FALSE
, /* pc_relative */
1129 complain_overflow_signed
, /* complain_on_overflow */
1130 bfd_elf_generic_reloc
, /* special_function */
1131 "R_PPC64_ADDR16_DS", /* name */
1132 FALSE
, /* partial_inplace */
1134 0xfffc, /* dst_mask */
1135 FALSE
), /* pcrel_offset */
1137 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1138 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1140 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 FALSE
, /* pc_relative */
1144 complain_overflow_dont
,/* complain_on_overflow */
1145 bfd_elf_generic_reloc
, /* special_function */
1146 "R_PPC64_ADDR16_LO_DS",/* name */
1147 FALSE
, /* partial_inplace */
1149 0xfffc, /* dst_mask */
1150 FALSE
), /* pcrel_offset */
1152 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1153 HOWTO (R_PPC64_GOT16_DS
, /* type */
1155 1, /* size (0 = byte, 1 = short, 2 = long) */
1157 FALSE
, /* pc_relative */
1159 complain_overflow_signed
, /* complain_on_overflow */
1160 ppc64_elf_unhandled_reloc
, /* special_function */
1161 "R_PPC64_GOT16_DS", /* name */
1162 FALSE
, /* partial_inplace */
1164 0xfffc, /* dst_mask */
1165 FALSE
), /* pcrel_offset */
1167 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1168 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1170 1, /* size (0 = byte, 1 = short, 2 = long) */
1172 FALSE
, /* pc_relative */
1174 complain_overflow_dont
, /* complain_on_overflow */
1175 ppc64_elf_unhandled_reloc
, /* special_function */
1176 "R_PPC64_GOT16_LO_DS", /* name */
1177 FALSE
, /* partial_inplace */
1179 0xfffc, /* dst_mask */
1180 FALSE
), /* pcrel_offset */
1182 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1183 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE
, /* pc_relative */
1189 complain_overflow_dont
, /* complain_on_overflow */
1190 ppc64_elf_unhandled_reloc
, /* special_function */
1191 "R_PPC64_PLT16_LO_DS", /* name */
1192 FALSE
, /* partial_inplace */
1194 0xfffc, /* dst_mask */
1195 FALSE
), /* pcrel_offset */
1197 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1198 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 FALSE
, /* pc_relative */
1204 complain_overflow_signed
, /* complain_on_overflow */
1205 ppc64_elf_sectoff_reloc
, /* special_function */
1206 "R_PPC64_SECTOFF_DS", /* name */
1207 FALSE
, /* partial_inplace */
1209 0xfffc, /* dst_mask */
1210 FALSE
), /* pcrel_offset */
1212 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1213 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE
, /* pc_relative */
1219 complain_overflow_dont
, /* complain_on_overflow */
1220 ppc64_elf_sectoff_reloc
, /* special_function */
1221 "R_PPC64_SECTOFF_LO_DS",/* name */
1222 FALSE
, /* partial_inplace */
1224 0xfffc, /* dst_mask */
1225 FALSE
), /* pcrel_offset */
1227 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1228 HOWTO (R_PPC64_TOC16_DS
, /* type */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE
, /* pc_relative */
1234 complain_overflow_signed
, /* complain_on_overflow */
1235 ppc64_elf_toc_reloc
, /* special_function */
1236 "R_PPC64_TOC16_DS", /* name */
1237 FALSE
, /* partial_inplace */
1239 0xfffc, /* dst_mask */
1240 FALSE
), /* pcrel_offset */
1242 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1243 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1245 1, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE
, /* pc_relative */
1249 complain_overflow_dont
, /* complain_on_overflow */
1250 ppc64_elf_toc_reloc
, /* special_function */
1251 "R_PPC64_TOC16_LO_DS", /* name */
1252 FALSE
, /* partial_inplace */
1254 0xfffc, /* dst_mask */
1255 FALSE
), /* pcrel_offset */
1257 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1258 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1259 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1261 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE
, /* pc_relative */
1265 complain_overflow_signed
, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc
, /* special_function */
1267 "R_PPC64_PLTGOT16_DS", /* name */
1268 FALSE
, /* partial_inplace */
1270 0xfffc, /* dst_mask */
1271 FALSE
), /* pcrel_offset */
1273 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1274 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1275 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1279 FALSE
, /* pc_relative */
1281 complain_overflow_dont
, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc
, /* special_function */
1283 "R_PPC64_PLTGOT16_LO_DS",/* name */
1284 FALSE
, /* partial_inplace */
1286 0xfffc, /* dst_mask */
1287 FALSE
), /* pcrel_offset */
1289 /* Marker relocs for TLS. */
1292 2, /* size (0 = byte, 1 = short, 2 = long) */
1294 FALSE
, /* pc_relative */
1296 complain_overflow_dont
, /* complain_on_overflow */
1297 bfd_elf_generic_reloc
, /* special_function */
1298 "R_PPC64_TLS", /* name */
1299 FALSE
, /* partial_inplace */
1302 FALSE
), /* pcrel_offset */
1304 HOWTO (R_PPC64_TLSGD
,
1306 2, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE
, /* pc_relative */
1310 complain_overflow_dont
, /* complain_on_overflow */
1311 bfd_elf_generic_reloc
, /* special_function */
1312 "R_PPC64_TLSGD", /* name */
1313 FALSE
, /* partial_inplace */
1316 FALSE
), /* pcrel_offset */
1318 HOWTO (R_PPC64_TLSLD
,
1320 2, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_dont
, /* complain_on_overflow */
1325 bfd_elf_generic_reloc
, /* special_function */
1326 "R_PPC64_TLSLD", /* name */
1327 FALSE
, /* partial_inplace */
1330 FALSE
), /* pcrel_offset */
1332 HOWTO (R_PPC64_TOCSAVE
,
1334 2, /* size (0 = byte, 1 = short, 2 = long) */
1336 FALSE
, /* pc_relative */
1338 complain_overflow_dont
, /* complain_on_overflow */
1339 bfd_elf_generic_reloc
, /* special_function */
1340 "R_PPC64_TOCSAVE", /* name */
1341 FALSE
, /* partial_inplace */
1344 FALSE
), /* pcrel_offset */
1346 /* Computes the load module index of the load module that contains the
1347 definition of its TLS sym. */
1348 HOWTO (R_PPC64_DTPMOD64
,
1350 4, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE
, /* pc_relative */
1354 complain_overflow_dont
, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc
, /* special_function */
1356 "R_PPC64_DTPMOD64", /* name */
1357 FALSE
, /* partial_inplace */
1359 ONES (64), /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Computes a dtv-relative displacement, the difference between the value
1363 of sym+add and the base address of the thread-local storage block that
1364 contains the definition of sym, minus 0x8000. */
1365 HOWTO (R_PPC64_DTPREL64
,
1367 4, /* size (0 = byte, 1 = short, 2 = long) */
1369 FALSE
, /* pc_relative */
1371 complain_overflow_dont
, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc
, /* special_function */
1373 "R_PPC64_DTPREL64", /* name */
1374 FALSE
, /* partial_inplace */
1376 ONES (64), /* dst_mask */
1377 FALSE
), /* pcrel_offset */
1379 /* A 16 bit dtprel reloc. */
1380 HOWTO (R_PPC64_DTPREL16
,
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 FALSE
, /* pc_relative */
1386 complain_overflow_signed
, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc
, /* special_function */
1388 "R_PPC64_DTPREL16", /* name */
1389 FALSE
, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 FALSE
), /* pcrel_offset */
1394 /* Like DTPREL16, but no overflow. */
1395 HOWTO (R_PPC64_DTPREL16_LO
,
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE
, /* pc_relative */
1401 complain_overflow_dont
, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc
, /* special_function */
1403 "R_PPC64_DTPREL16_LO", /* name */
1404 FALSE
, /* partial_inplace */
1406 0xffff, /* dst_mask */
1407 FALSE
), /* pcrel_offset */
1409 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1410 HOWTO (R_PPC64_DTPREL16_HI
,
1411 16, /* rightshift */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1414 FALSE
, /* pc_relative */
1416 complain_overflow_signed
, /* complain_on_overflow */
1417 ppc64_elf_unhandled_reloc
, /* special_function */
1418 "R_PPC64_DTPREL16_HI", /* name */
1419 FALSE
, /* partial_inplace */
1421 0xffff, /* dst_mask */
1422 FALSE
), /* pcrel_offset */
1424 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1425 HOWTO (R_PPC64_DTPREL16_HA
,
1426 16, /* rightshift */
1427 1, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE
, /* pc_relative */
1431 complain_overflow_signed
, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc
, /* special_function */
1433 "R_PPC64_DTPREL16_HA", /* name */
1434 FALSE
, /* partial_inplace */
1436 0xffff, /* dst_mask */
1437 FALSE
), /* pcrel_offset */
1439 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1440 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1441 32, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE
, /* pc_relative */
1446 complain_overflow_dont
, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc
, /* special_function */
1448 "R_PPC64_DTPREL16_HIGHER", /* name */
1449 FALSE
, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE
), /* pcrel_offset */
1454 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1455 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1456 32, /* rightshift */
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE
, /* pc_relative */
1461 complain_overflow_dont
, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc
, /* special_function */
1463 "R_PPC64_DTPREL16_HIGHERA", /* name */
1464 FALSE
, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE
), /* pcrel_offset */
1469 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1471 48, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE
, /* pc_relative */
1476 complain_overflow_dont
, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc
, /* special_function */
1478 "R_PPC64_DTPREL16_HIGHEST", /* name */
1479 FALSE
, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE
), /* pcrel_offset */
1484 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1486 48, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE
, /* pc_relative */
1491 complain_overflow_dont
, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc
, /* special_function */
1493 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1494 FALSE
, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE
), /* pcrel_offset */
1499 /* Like DTPREL16, but for insns with a DS field. */
1500 HOWTO (R_PPC64_DTPREL16_DS
,
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_signed
, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc
, /* special_function */
1508 "R_PPC64_DTPREL16_DS", /* name */
1509 FALSE
, /* partial_inplace */
1511 0xfffc, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 /* Like DTPREL16_DS, but no overflow. */
1515 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE
, /* pc_relative */
1521 complain_overflow_dont
, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc
, /* special_function */
1523 "R_PPC64_DTPREL16_LO_DS", /* name */
1524 FALSE
, /* partial_inplace */
1526 0xfffc, /* dst_mask */
1527 FALSE
), /* pcrel_offset */
1529 /* Computes a tp-relative displacement, the difference between the value of
1530 sym+add and the value of the thread pointer (r13). */
1531 HOWTO (R_PPC64_TPREL64
,
1533 4, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE
, /* pc_relative */
1537 complain_overflow_dont
, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc
, /* special_function */
1539 "R_PPC64_TPREL64", /* name */
1540 FALSE
, /* partial_inplace */
1542 ONES (64), /* dst_mask */
1543 FALSE
), /* pcrel_offset */
1545 /* A 16 bit tprel reloc. */
1546 HOWTO (R_PPC64_TPREL16
,
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE
, /* pc_relative */
1552 complain_overflow_signed
, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc
, /* special_function */
1554 "R_PPC64_TPREL16", /* name */
1555 FALSE
, /* partial_inplace */
1557 0xffff, /* dst_mask */
1558 FALSE
), /* pcrel_offset */
1560 /* Like TPREL16, but no overflow. */
1561 HOWTO (R_PPC64_TPREL16_LO
,
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1565 FALSE
, /* pc_relative */
1567 complain_overflow_dont
, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc
, /* special_function */
1569 "R_PPC64_TPREL16_LO", /* name */
1570 FALSE
, /* partial_inplace */
1572 0xffff, /* dst_mask */
1573 FALSE
), /* pcrel_offset */
1575 /* Like TPREL16_LO, but next higher group of 16 bits. */
1576 HOWTO (R_PPC64_TPREL16_HI
,
1577 16, /* rightshift */
1578 1, /* size (0 = byte, 1 = short, 2 = long) */
1580 FALSE
, /* pc_relative */
1582 complain_overflow_signed
, /* complain_on_overflow */
1583 ppc64_elf_unhandled_reloc
, /* special_function */
1584 "R_PPC64_TPREL16_HI", /* name */
1585 FALSE
, /* partial_inplace */
1587 0xffff, /* dst_mask */
1588 FALSE
), /* pcrel_offset */
1590 /* Like TPREL16_HI, but adjust for low 16 bits. */
1591 HOWTO (R_PPC64_TPREL16_HA
,
1592 16, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE
, /* pc_relative */
1597 complain_overflow_signed
, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc
, /* special_function */
1599 "R_PPC64_TPREL16_HA", /* name */
1600 FALSE
, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE
), /* pcrel_offset */
1605 /* Like TPREL16_HI, but next higher group of 16 bits. */
1606 HOWTO (R_PPC64_TPREL16_HIGHER
,
1607 32, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 FALSE
, /* pc_relative */
1612 complain_overflow_dont
, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc
, /* special_function */
1614 "R_PPC64_TPREL16_HIGHER", /* name */
1615 FALSE
, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE
), /* pcrel_offset */
1620 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1621 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1622 32, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc
, /* special_function */
1629 "R_PPC64_TPREL16_HIGHERA", /* name */
1630 FALSE
, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE
), /* pcrel_offset */
1635 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1636 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1637 48, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE
, /* pc_relative */
1642 complain_overflow_dont
, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc
, /* special_function */
1644 "R_PPC64_TPREL16_HIGHEST", /* name */
1645 FALSE
, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE
), /* pcrel_offset */
1650 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1651 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1652 48, /* rightshift */
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_dont
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_TPREL16_HIGHESTA", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like TPREL16, but for insns with a DS field. */
1666 HOWTO (R_PPC64_TPREL16_DS
,
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE
, /* pc_relative */
1672 complain_overflow_signed
, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc
, /* special_function */
1674 "R_PPC64_TPREL16_DS", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xfffc, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like TPREL16_DS, but no overflow. */
1681 HOWTO (R_PPC64_TPREL16_LO_DS
,
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC64_TPREL16_LO_DS", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xfffc, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1697 to the first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSGD16
,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE
, /* pc_relative */
1704 complain_overflow_signed
, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc
, /* special_function */
1706 "R_PPC64_GOT_TLSGD16", /* name */
1707 FALSE
, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE
), /* pcrel_offset */
1712 /* Like GOT_TLSGD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE
, /* pc_relative */
1719 complain_overflow_dont
, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc
, /* special_function */
1721 "R_PPC64_GOT_TLSGD16_LO", /* name */
1722 FALSE
, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE
), /* pcrel_offset */
1727 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1729 16, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE
, /* pc_relative */
1734 complain_overflow_signed
, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc
, /* special_function */
1736 "R_PPC64_GOT_TLSGD16_HI", /* name */
1737 FALSE
, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE
, /* pc_relative */
1749 complain_overflow_signed
, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc
, /* special_function */
1751 "R_PPC64_GOT_TLSGD16_HA", /* name */
1752 FALSE
, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE
), /* pcrel_offset */
1757 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1758 with values (sym+add)@dtpmod and zero, and computes the offset to the
1759 first entry relative to the TOC base (r2). */
1760 HOWTO (R_PPC64_GOT_TLSLD16
,
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE
, /* pc_relative */
1766 complain_overflow_signed
, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc
, /* special_function */
1768 "R_PPC64_GOT_TLSLD16", /* name */
1769 FALSE
, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE
), /* pcrel_offset */
1774 /* Like GOT_TLSLD16, but no overflow. */
1775 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE
, /* pc_relative */
1781 complain_overflow_dont
, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc
, /* special_function */
1783 "R_PPC64_GOT_TLSLD16_LO", /* name */
1784 FALSE
, /* partial_inplace */
1786 0xffff, /* dst_mask */
1787 FALSE
), /* pcrel_offset */
1789 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1790 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1791 16, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE
, /* pc_relative */
1796 complain_overflow_signed
, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc
, /* special_function */
1798 "R_PPC64_GOT_TLSLD16_HI", /* name */
1799 FALSE
, /* partial_inplace */
1801 0xffff, /* dst_mask */
1802 FALSE
), /* pcrel_offset */
1804 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1805 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 FALSE
, /* pc_relative */
1811 complain_overflow_signed
, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc
, /* special_function */
1813 "R_PPC64_GOT_TLSLD16_HA", /* name */
1814 FALSE
, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE
), /* pcrel_offset */
1819 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1820 the offset to the entry relative to the TOC base (r2). */
1821 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE
, /* pc_relative */
1827 complain_overflow_signed
, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc
, /* special_function */
1829 "R_PPC64_GOT_DTPREL16_DS", /* name */
1830 FALSE
, /* partial_inplace */
1832 0xfffc, /* dst_mask */
1833 FALSE
), /* pcrel_offset */
1835 /* Like GOT_DTPREL16_DS, but no overflow. */
1836 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1838 1, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE
, /* pc_relative */
1842 complain_overflow_dont
, /* complain_on_overflow */
1843 ppc64_elf_unhandled_reloc
, /* special_function */
1844 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1845 FALSE
, /* partial_inplace */
1847 0xfffc, /* dst_mask */
1848 FALSE
), /* pcrel_offset */
1850 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1851 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1852 16, /* rightshift */
1853 1, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE
, /* pc_relative */
1857 complain_overflow_signed
, /* complain_on_overflow */
1858 ppc64_elf_unhandled_reloc
, /* special_function */
1859 "R_PPC64_GOT_DTPREL16_HI", /* name */
1860 FALSE
, /* partial_inplace */
1862 0xffff, /* dst_mask */
1863 FALSE
), /* pcrel_offset */
1865 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1866 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1867 16, /* rightshift */
1868 1, /* size (0 = byte, 1 = short, 2 = long) */
1870 FALSE
, /* pc_relative */
1872 complain_overflow_signed
, /* complain_on_overflow */
1873 ppc64_elf_unhandled_reloc
, /* special_function */
1874 "R_PPC64_GOT_DTPREL16_HA", /* name */
1875 FALSE
, /* partial_inplace */
1877 0xffff, /* dst_mask */
1878 FALSE
), /* pcrel_offset */
1880 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1881 offset to the entry relative to the TOC base (r2). */
1882 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1884 1, /* size (0 = byte, 1 = short, 2 = long) */
1886 FALSE
, /* pc_relative */
1888 complain_overflow_signed
, /* complain_on_overflow */
1889 ppc64_elf_unhandled_reloc
, /* special_function */
1890 "R_PPC64_GOT_TPREL16_DS", /* name */
1891 FALSE
, /* partial_inplace */
1893 0xfffc, /* dst_mask */
1894 FALSE
), /* pcrel_offset */
1896 /* Like GOT_TPREL16_DS, but no overflow. */
1897 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1899 1, /* size (0 = byte, 1 = short, 2 = long) */
1901 FALSE
, /* pc_relative */
1903 complain_overflow_dont
, /* complain_on_overflow */
1904 ppc64_elf_unhandled_reloc
, /* special_function */
1905 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1906 FALSE
, /* partial_inplace */
1908 0xfffc, /* dst_mask */
1909 FALSE
), /* pcrel_offset */
1911 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1912 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1913 16, /* rightshift */
1914 1, /* size (0 = byte, 1 = short, 2 = long) */
1916 FALSE
, /* pc_relative */
1918 complain_overflow_signed
, /* complain_on_overflow */
1919 ppc64_elf_unhandled_reloc
, /* special_function */
1920 "R_PPC64_GOT_TPREL16_HI", /* name */
1921 FALSE
, /* partial_inplace */
1923 0xffff, /* dst_mask */
1924 FALSE
), /* pcrel_offset */
1926 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1927 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1928 16, /* rightshift */
1929 1, /* size (0 = byte, 1 = short, 2 = long) */
1931 FALSE
, /* pc_relative */
1933 complain_overflow_signed
, /* complain_on_overflow */
1934 ppc64_elf_unhandled_reloc
, /* special_function */
1935 "R_PPC64_GOT_TPREL16_HA", /* name */
1936 FALSE
, /* partial_inplace */
1938 0xffff, /* dst_mask */
1939 FALSE
), /* pcrel_offset */
1941 HOWTO (R_PPC64_JMP_IREL
, /* type */
1943 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1945 FALSE
, /* pc_relative */
1947 complain_overflow_dont
, /* complain_on_overflow */
1948 ppc64_elf_unhandled_reloc
, /* special_function */
1949 "R_PPC64_JMP_IREL", /* name */
1950 FALSE
, /* partial_inplace */
1953 FALSE
), /* pcrel_offset */
1955 HOWTO (R_PPC64_IRELATIVE
, /* type */
1957 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1959 FALSE
, /* pc_relative */
1961 complain_overflow_dont
, /* complain_on_overflow */
1962 bfd_elf_generic_reloc
, /* special_function */
1963 "R_PPC64_IRELATIVE", /* name */
1964 FALSE
, /* partial_inplace */
1966 ONES (64), /* dst_mask */
1967 FALSE
), /* pcrel_offset */
1969 /* A 16 bit relative relocation. */
1970 HOWTO (R_PPC64_REL16
, /* type */
1972 1, /* size (0 = byte, 1 = short, 2 = long) */
1974 TRUE
, /* pc_relative */
1976 complain_overflow_signed
, /* complain_on_overflow */
1977 bfd_elf_generic_reloc
, /* special_function */
1978 "R_PPC64_REL16", /* name */
1979 FALSE
, /* partial_inplace */
1981 0xffff, /* dst_mask */
1982 TRUE
), /* pcrel_offset */
1984 /* A 16 bit relative relocation without overflow. */
1985 HOWTO (R_PPC64_REL16_LO
, /* type */
1987 1, /* size (0 = byte, 1 = short, 2 = long) */
1989 TRUE
, /* pc_relative */
1991 complain_overflow_dont
,/* complain_on_overflow */
1992 bfd_elf_generic_reloc
, /* special_function */
1993 "R_PPC64_REL16_LO", /* name */
1994 FALSE
, /* partial_inplace */
1996 0xffff, /* dst_mask */
1997 TRUE
), /* pcrel_offset */
1999 /* The high order 16 bits of a relative address. */
2000 HOWTO (R_PPC64_REL16_HI
, /* type */
2001 16, /* rightshift */
2002 1, /* size (0 = byte, 1 = short, 2 = long) */
2004 TRUE
, /* pc_relative */
2006 complain_overflow_signed
, /* complain_on_overflow */
2007 bfd_elf_generic_reloc
, /* special_function */
2008 "R_PPC64_REL16_HI", /* name */
2009 FALSE
, /* partial_inplace */
2011 0xffff, /* dst_mask */
2012 TRUE
), /* pcrel_offset */
2014 /* The high order 16 bits of a relative address, plus 1 if the contents of
2015 the low 16 bits, treated as a signed number, is negative. */
2016 HOWTO (R_PPC64_REL16_HA
, /* type */
2017 16, /* rightshift */
2018 1, /* size (0 = byte, 1 = short, 2 = long) */
2020 TRUE
, /* pc_relative */
2022 complain_overflow_signed
, /* complain_on_overflow */
2023 ppc64_elf_ha_reloc
, /* special_function */
2024 "R_PPC64_REL16_HA", /* name */
2025 FALSE
, /* partial_inplace */
2027 0xffff, /* dst_mask */
2028 TRUE
), /* pcrel_offset */
2030 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2031 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2032 16, /* rightshift */
2033 2, /* size (0 = byte, 1 = short, 2 = long) */
2035 TRUE
, /* pc_relative */
2037 complain_overflow_signed
, /* complain_on_overflow */
2038 ppc64_elf_ha_reloc
, /* special_function */
2039 "R_PPC64_REL16DX_HA", /* name */
2040 FALSE
, /* partial_inplace */
2042 0x1fffc1, /* dst_mask */
2043 TRUE
), /* pcrel_offset */
2045 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2046 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2047 16, /* rightshift */
2048 1, /* size (0 = byte, 1 = short, 2 = long) */
2050 FALSE
, /* pc_relative */
2052 complain_overflow_dont
, /* complain_on_overflow */
2053 bfd_elf_generic_reloc
, /* special_function */
2054 "R_PPC64_ADDR16_HIGH", /* name */
2055 FALSE
, /* partial_inplace */
2057 0xffff, /* dst_mask */
2058 FALSE
), /* pcrel_offset */
2060 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2061 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2062 16, /* rightshift */
2063 1, /* size (0 = byte, 1 = short, 2 = long) */
2065 FALSE
, /* pc_relative */
2067 complain_overflow_dont
, /* complain_on_overflow */
2068 ppc64_elf_ha_reloc
, /* special_function */
2069 "R_PPC64_ADDR16_HIGHA", /* name */
2070 FALSE
, /* partial_inplace */
2072 0xffff, /* dst_mask */
2073 FALSE
), /* pcrel_offset */
2075 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2076 HOWTO (R_PPC64_DTPREL16_HIGH
,
2077 16, /* rightshift */
2078 1, /* size (0 = byte, 1 = short, 2 = long) */
2080 FALSE
, /* pc_relative */
2082 complain_overflow_dont
, /* complain_on_overflow */
2083 ppc64_elf_unhandled_reloc
, /* special_function */
2084 "R_PPC64_DTPREL16_HIGH", /* name */
2085 FALSE
, /* partial_inplace */
2087 0xffff, /* dst_mask */
2088 FALSE
), /* pcrel_offset */
2090 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2091 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2092 16, /* rightshift */
2093 1, /* size (0 = byte, 1 = short, 2 = long) */
2095 FALSE
, /* pc_relative */
2097 complain_overflow_dont
, /* complain_on_overflow */
2098 ppc64_elf_unhandled_reloc
, /* special_function */
2099 "R_PPC64_DTPREL16_HIGHA", /* name */
2100 FALSE
, /* partial_inplace */
2102 0xffff, /* dst_mask */
2103 FALSE
), /* pcrel_offset */
2105 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2106 HOWTO (R_PPC64_TPREL16_HIGH
,
2107 16, /* rightshift */
2108 1, /* size (0 = byte, 1 = short, 2 = long) */
2110 FALSE
, /* pc_relative */
2112 complain_overflow_dont
, /* complain_on_overflow */
2113 ppc64_elf_unhandled_reloc
, /* special_function */
2114 "R_PPC64_TPREL16_HIGH", /* name */
2115 FALSE
, /* partial_inplace */
2117 0xffff, /* dst_mask */
2118 FALSE
), /* pcrel_offset */
2120 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2121 HOWTO (R_PPC64_TPREL16_HIGHA
,
2122 16, /* rightshift */
2123 1, /* size (0 = byte, 1 = short, 2 = long) */
2125 FALSE
, /* pc_relative */
2127 complain_overflow_dont
, /* complain_on_overflow */
2128 ppc64_elf_unhandled_reloc
, /* special_function */
2129 "R_PPC64_TPREL16_HIGHA", /* name */
2130 FALSE
, /* partial_inplace */
2132 0xffff, /* dst_mask */
2133 FALSE
), /* pcrel_offset */
2135 /* Marker reloc on ELFv2 large-model function entry. */
2136 HOWTO (R_PPC64_ENTRY
,
2138 2, /* size (0 = byte, 1 = short, 2 = long) */
2140 FALSE
, /* pc_relative */
2142 complain_overflow_dont
, /* complain_on_overflow */
2143 bfd_elf_generic_reloc
, /* special_function */
2144 "R_PPC64_ENTRY", /* name */
2145 FALSE
, /* partial_inplace */
2148 FALSE
), /* pcrel_offset */
2150 /* Like ADDR64, but use local entry point of function. */
2151 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2153 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2155 FALSE
, /* pc_relative */
2157 complain_overflow_dont
, /* complain_on_overflow */
2158 bfd_elf_generic_reloc
, /* special_function */
2159 "R_PPC64_ADDR64_LOCAL", /* name */
2160 FALSE
, /* partial_inplace */
2162 ONES (64), /* dst_mask */
2163 FALSE
), /* pcrel_offset */
2165 /* GNU extension to record C++ vtable hierarchy. */
2166 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2168 0, /* size (0 = byte, 1 = short, 2 = long) */
2170 FALSE
, /* pc_relative */
2172 complain_overflow_dont
, /* complain_on_overflow */
2173 NULL
, /* special_function */
2174 "R_PPC64_GNU_VTINHERIT", /* name */
2175 FALSE
, /* partial_inplace */
2178 FALSE
), /* pcrel_offset */
2180 /* GNU extension to record C++ vtable member usage. */
2181 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2183 0, /* size (0 = byte, 1 = short, 2 = long) */
2185 FALSE
, /* pc_relative */
2187 complain_overflow_dont
, /* complain_on_overflow */
2188 NULL
, /* special_function */
2189 "R_PPC64_GNU_VTENTRY", /* name */
2190 FALSE
, /* partial_inplace */
2193 FALSE
), /* pcrel_offset */
2197 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2201 ppc_howto_init (void)
2203 unsigned int i
, type
;
2205 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2207 type
= ppc64_elf_howto_raw
[i
].type
;
2208 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2209 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2213 static reloc_howto_type
*
2214 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2215 bfd_reloc_code_real_type code
)
2217 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2219 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2220 /* Initialize howto table if needed. */
2228 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2230 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2232 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2234 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2236 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2238 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2240 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2242 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2244 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2246 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2248 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2250 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2252 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2254 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2256 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2258 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2260 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2262 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2264 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2266 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2268 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2270 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2272 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2274 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2276 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2278 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2280 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2282 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2284 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2286 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2288 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2290 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2292 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2294 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2296 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2298 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2300 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2302 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2304 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2306 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2308 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2310 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2312 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2314 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2316 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2318 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2320 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2322 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2324 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2326 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2328 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2330 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2332 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2334 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2336 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2338 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2340 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2342 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2344 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2346 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2348 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2350 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2352 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2354 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2356 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2358 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2360 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2362 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2364 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2366 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2368 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2370 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2372 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2374 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2376 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2378 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2380 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2382 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2384 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2386 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2388 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2390 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2392 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2394 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2396 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2398 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2400 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2402 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2404 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2406 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2408 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2410 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2412 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2414 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2416 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2418 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2420 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2422 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2424 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2426 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2428 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2430 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2432 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2434 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2436 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2438 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2440 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2442 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2444 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2446 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2448 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2450 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2452 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2454 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2456 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2458 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2462 return ppc64_elf_howto_table
[r
];
2465 static reloc_howto_type
*
2466 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2471 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2472 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2473 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2474 return &ppc64_elf_howto_raw
[i
];
2479 /* Set the howto pointer for a PowerPC ELF reloc. */
2482 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2483 Elf_Internal_Rela
*dst
)
2487 /* Initialize howto table if needed. */
2488 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2491 type
= ELF64_R_TYPE (dst
->r_info
);
2492 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2494 /* xgettext:c-format */
2495 _bfd_error_handler (_("%B: invalid relocation type %d"),
2497 type
= R_PPC64_NONE
;
2499 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2502 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2504 static bfd_reloc_status_type
2505 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2506 void *data
, asection
*input_section
,
2507 bfd
*output_bfd
, char **error_message
)
2509 enum elf_ppc64_reloc_type r_type
;
2511 bfd_size_type octets
;
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd
!= NULL
)
2518 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2519 input_section
, output_bfd
, error_message
);
2521 /* Adjust the addend for sign extension of the low 16 bits.
2522 We won't actually be using the low 16 bits, so trashing them
2524 reloc_entry
->addend
+= 0x8000;
2525 r_type
= reloc_entry
->howto
->type
;
2526 if (r_type
!= R_PPC64_REL16DX_HA
)
2527 return bfd_reloc_continue
;
2530 if (!bfd_is_com_section (symbol
->section
))
2531 value
= symbol
->value
;
2532 value
+= (reloc_entry
->addend
2533 + symbol
->section
->output_offset
2534 + symbol
->section
->output_section
->vma
);
2535 value
-= (reloc_entry
->address
2536 + input_section
->output_offset
2537 + input_section
->output_section
->vma
);
2538 value
= (bfd_signed_vma
) value
>> 16;
2540 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2541 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2543 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2544 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2545 if (value
+ 0x8000 > 0xffff)
2546 return bfd_reloc_overflow
;
2547 return bfd_reloc_ok
;
2550 static bfd_reloc_status_type
2551 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2552 void *data
, asection
*input_section
,
2553 bfd
*output_bfd
, char **error_message
)
2555 if (output_bfd
!= NULL
)
2556 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2557 input_section
, output_bfd
, error_message
);
2559 if (strcmp (symbol
->section
->name
, ".opd") == 0
2560 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2562 bfd_vma dest
= opd_entry_value (symbol
->section
,
2563 symbol
->value
+ reloc_entry
->addend
,
2565 if (dest
!= (bfd_vma
) -1)
2566 reloc_entry
->addend
= dest
- (symbol
->value
2567 + symbol
->section
->output_section
->vma
2568 + symbol
->section
->output_offset
);
2572 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2574 if (symbol
->section
->owner
!= abfd
2575 && symbol
->section
->owner
!= NULL
2576 && abiversion (symbol
->section
->owner
) >= 2)
2580 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2582 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2584 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2586 elfsym
= (elf_symbol_type
*) symdef
;
2592 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2594 return bfd_reloc_continue
;
2597 static bfd_reloc_status_type
2598 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2599 void *data
, asection
*input_section
,
2600 bfd
*output_bfd
, char **error_message
)
2603 enum elf_ppc64_reloc_type r_type
;
2604 bfd_size_type octets
;
2605 /* Assume 'at' branch hints. */
2606 bfd_boolean is_isa_v2
= TRUE
;
2608 /* If this is a relocatable link (output_bfd test tells us), just
2609 call the generic function. Any adjustment will be done at final
2611 if (output_bfd
!= NULL
)
2612 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2613 input_section
, output_bfd
, error_message
);
2615 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2616 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2617 insn
&= ~(0x01 << 21);
2618 r_type
= reloc_entry
->howto
->type
;
2619 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2620 || r_type
== R_PPC64_REL14_BRTAKEN
)
2621 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2625 /* Set 'a' bit. This is 0b00010 in BO field for branch
2626 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2627 for branch on CTR insns (BO == 1a00t or 1a01t). */
2628 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2630 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2640 if (!bfd_is_com_section (symbol
->section
))
2641 target
= symbol
->value
;
2642 target
+= symbol
->section
->output_section
->vma
;
2643 target
+= symbol
->section
->output_offset
;
2644 target
+= reloc_entry
->addend
;
2646 from
= (reloc_entry
->address
2647 + input_section
->output_offset
2648 + input_section
->output_section
->vma
);
2650 /* Invert 'y' bit if not the default. */
2651 if ((bfd_signed_vma
) (target
- from
) < 0)
2654 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2656 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2657 input_section
, output_bfd
, error_message
);
2660 static bfd_reloc_status_type
2661 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2662 void *data
, asection
*input_section
,
2663 bfd
*output_bfd
, char **error_message
)
2665 /* If this is a relocatable link (output_bfd test tells us), just
2666 call the generic function. Any adjustment will be done at final
2668 if (output_bfd
!= NULL
)
2669 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2670 input_section
, output_bfd
, error_message
);
2672 /* Subtract the symbol section base address. */
2673 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2674 return bfd_reloc_continue
;
2677 static bfd_reloc_status_type
2678 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2679 void *data
, asection
*input_section
,
2680 bfd
*output_bfd
, char **error_message
)
2682 /* If this is a relocatable link (output_bfd test tells us), just
2683 call the generic function. Any adjustment will be done at final
2685 if (output_bfd
!= NULL
)
2686 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2687 input_section
, output_bfd
, error_message
);
2689 /* Subtract the symbol section base address. */
2690 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2692 /* Adjust the addend for sign extension of the low 16 bits. */
2693 reloc_entry
->addend
+= 0x8000;
2694 return bfd_reloc_continue
;
2697 static bfd_reloc_status_type
2698 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2699 void *data
, asection
*input_section
,
2700 bfd
*output_bfd
, char **error_message
)
2704 /* If this is a relocatable link (output_bfd test tells us), just
2705 call the generic function. Any adjustment will be done at final
2707 if (output_bfd
!= NULL
)
2708 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2709 input_section
, output_bfd
, error_message
);
2711 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2713 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2715 /* Subtract the TOC base address. */
2716 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2717 return bfd_reloc_continue
;
2720 static bfd_reloc_status_type
2721 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2722 void *data
, asection
*input_section
,
2723 bfd
*output_bfd
, char **error_message
)
2727 /* If this is a relocatable link (output_bfd test tells us), just
2728 call the generic function. Any adjustment will be done at final
2730 if (output_bfd
!= NULL
)
2731 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2732 input_section
, output_bfd
, error_message
);
2734 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2736 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2738 /* Subtract the TOC base address. */
2739 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2741 /* Adjust the addend for sign extension of the low 16 bits. */
2742 reloc_entry
->addend
+= 0x8000;
2743 return bfd_reloc_continue
;
2746 static bfd_reloc_status_type
2747 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2748 void *data
, asection
*input_section
,
2749 bfd
*output_bfd
, char **error_message
)
2752 bfd_size_type octets
;
2754 /* If this is a relocatable link (output_bfd test tells us), just
2755 call the generic function. Any adjustment will be done at final
2757 if (output_bfd
!= NULL
)
2758 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2759 input_section
, output_bfd
, error_message
);
2761 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2763 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2765 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2766 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2767 return bfd_reloc_ok
;
2770 static bfd_reloc_status_type
2771 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2772 void *data
, asection
*input_section
,
2773 bfd
*output_bfd
, char **error_message
)
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd
!= NULL
)
2779 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2780 input_section
, output_bfd
, error_message
);
2782 if (error_message
!= NULL
)
2784 static char buf
[60];
2785 sprintf (buf
, "generic linker can't handle %s",
2786 reloc_entry
->howto
->name
);
2787 *error_message
= buf
;
2789 return bfd_reloc_dangerous
;
2792 /* Track GOT entries needed for a given symbol. We might need more
2793 than one got entry per symbol. */
2796 struct got_entry
*next
;
2798 /* The symbol addend that we'll be placing in the GOT. */
2801 /* Unlike other ELF targets, we use separate GOT entries for the same
2802 symbol referenced from different input files. This is to support
2803 automatic multiple TOC/GOT sections, where the TOC base can vary
2804 from one input file to another. After partitioning into TOC groups
2805 we merge entries within the group.
2807 Point to the BFD owning this GOT entry. */
2810 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2811 TLS_TPREL or TLS_DTPREL for tls entries. */
2812 unsigned char tls_type
;
2814 /* Non-zero if got.ent points to real entry. */
2815 unsigned char is_indirect
;
2817 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2820 bfd_signed_vma refcount
;
2822 struct got_entry
*ent
;
2826 /* The same for PLT. */
2829 struct plt_entry
*next
;
2835 bfd_signed_vma refcount
;
2840 struct ppc64_elf_obj_tdata
2842 struct elf_obj_tdata elf
;
2844 /* Shortcuts to dynamic linker sections. */
2848 /* Used during garbage collection. We attach global symbols defined
2849 on removed .opd entries to this section so that the sym is removed. */
2850 asection
*deleted_section
;
2852 /* TLS local dynamic got entry handling. Support for multiple GOT
2853 sections means we potentially need one of these for each input bfd. */
2854 struct got_entry tlsld_got
;
2857 /* A copy of relocs before they are modified for --emit-relocs. */
2858 Elf_Internal_Rela
*relocs
;
2860 /* Section contents. */
2864 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2865 the reloc to be in the range -32768 to 32767. */
2866 unsigned int has_small_toc_reloc
: 1;
2868 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2869 instruction not one we handle. */
2870 unsigned int unexpected_toc_insn
: 1;
2873 #define ppc64_elf_tdata(bfd) \
2874 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2876 #define ppc64_tlsld_got(bfd) \
2877 (&ppc64_elf_tdata (bfd)->tlsld_got)
2879 #define is_ppc64_elf(bfd) \
2880 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2881 && elf_object_id (bfd) == PPC64_ELF_DATA)
2883 /* Override the generic function because we store some extras. */
2886 ppc64_elf_mkobject (bfd
*abfd
)
2888 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2892 /* Fix bad default arch selected for a 64 bit input bfd when the
2893 default is 32 bit. Also select arch based on apuinfo. */
2896 ppc64_elf_object_p (bfd
*abfd
)
2898 if (!abfd
->arch_info
->the_default
)
2901 if (abfd
->arch_info
->bits_per_word
== 32)
2903 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2905 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2907 /* Relies on arch after 32 bit default being 64 bit default. */
2908 abfd
->arch_info
= abfd
->arch_info
->next
;
2909 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2912 return _bfd_elf_ppc_set_arch (abfd
);
2915 /* Support for core dump NOTE sections. */
2918 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2920 size_t offset
, size
;
2922 if (note
->descsz
!= 504)
2926 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2929 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2935 /* Make a ".reg/999" section. */
2936 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2937 size
, note
->descpos
+ offset
);
2941 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2943 if (note
->descsz
!= 136)
2946 elf_tdata (abfd
)->core
->pid
2947 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2948 elf_tdata (abfd
)->core
->program
2949 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2950 elf_tdata (abfd
)->core
->command
2951 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2957 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2970 va_start (ap
, note_type
);
2971 memset (data
, 0, sizeof (data
));
2972 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2973 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2975 return elfcore_write_note (abfd
, buf
, bufsiz
,
2976 "CORE", note_type
, data
, sizeof (data
));
2987 va_start (ap
, note_type
);
2988 memset (data
, 0, 112);
2989 pid
= va_arg (ap
, long);
2990 bfd_put_32 (abfd
, pid
, data
+ 32);
2991 cursig
= va_arg (ap
, int);
2992 bfd_put_16 (abfd
, cursig
, data
+ 12);
2993 greg
= va_arg (ap
, const void *);
2994 memcpy (data
+ 112, greg
, 384);
2995 memset (data
+ 496, 0, 8);
2997 return elfcore_write_note (abfd
, buf
, bufsiz
,
2998 "CORE", note_type
, data
, sizeof (data
));
3003 /* Add extra PPC sections. */
3005 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3007 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3008 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3009 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3010 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3011 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3012 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3013 { NULL
, 0, 0, 0, 0 }
3016 enum _ppc64_sec_type
{
3022 struct _ppc64_elf_section_data
3024 struct bfd_elf_section_data elf
;
3028 /* An array with one entry for each opd function descriptor,
3029 and some spares since opd entries may be either 16 or 24 bytes. */
3030 #define OPD_NDX(OFF) ((OFF) >> 4)
3031 struct _opd_sec_data
3033 /* Points to the function code section for local opd entries. */
3034 asection
**func_sec
;
3036 /* After editing .opd, adjust references to opd local syms. */
3040 /* An array for toc sections, indexed by offset/8. */
3041 struct _toc_sec_data
3043 /* Specifies the relocation symbol index used at a given toc offset. */
3046 /* And the relocation addend. */
3051 enum _ppc64_sec_type sec_type
:2;
3053 /* Flag set when small branches are detected. Used to
3054 select suitable defaults for the stub group size. */
3055 unsigned int has_14bit_branch
:1;
3058 #define ppc64_elf_section_data(sec) \
3059 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3062 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3064 if (!sec
->used_by_bfd
)
3066 struct _ppc64_elf_section_data
*sdata
;
3067 bfd_size_type amt
= sizeof (*sdata
);
3069 sdata
= bfd_zalloc (abfd
, amt
);
3072 sec
->used_by_bfd
= sdata
;
3075 return _bfd_elf_new_section_hook (abfd
, sec
);
3078 static struct _opd_sec_data
*
3079 get_opd_info (asection
* sec
)
3082 && ppc64_elf_section_data (sec
) != NULL
3083 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3084 return &ppc64_elf_section_data (sec
)->u
.opd
;
3088 /* Parameters for the qsort hook. */
3089 static bfd_boolean synthetic_relocatable
;
3090 static asection
*synthetic_opd
;
3092 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3095 compare_symbols (const void *ap
, const void *bp
)
3097 const asymbol
*a
= * (const asymbol
**) ap
;
3098 const asymbol
*b
= * (const asymbol
**) bp
;
3100 /* Section symbols first. */
3101 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3103 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3106 /* then .opd symbols. */
3107 if (synthetic_opd
!= NULL
)
3109 if (strcmp (a
->section
->name
, ".opd") == 0
3110 && strcmp (b
->section
->name
, ".opd") != 0)
3112 if (strcmp (a
->section
->name
, ".opd") != 0
3113 && strcmp (b
->section
->name
, ".opd") == 0)
3117 /* then other code symbols. */
3118 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3119 == (SEC_CODE
| SEC_ALLOC
)
3120 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3121 != (SEC_CODE
| SEC_ALLOC
))
3124 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3125 != (SEC_CODE
| SEC_ALLOC
)
3126 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3127 == (SEC_CODE
| SEC_ALLOC
))
3130 if (synthetic_relocatable
)
3132 if (a
->section
->id
< b
->section
->id
)
3135 if (a
->section
->id
> b
->section
->id
)
3139 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3142 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3145 /* For syms with the same value, prefer strong dynamic global function
3146 syms over other syms. */
3147 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3150 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3153 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3156 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3159 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3162 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3165 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3168 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3174 /* Search SYMS for a symbol of the given VALUE. */
3177 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3181 if (id
== (unsigned) -1)
3185 mid
= (lo
+ hi
) >> 1;
3186 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3188 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3198 mid
= (lo
+ hi
) >> 1;
3199 if (syms
[mid
]->section
->id
< id
)
3201 else if (syms
[mid
]->section
->id
> id
)
3203 else if (syms
[mid
]->value
< value
)
3205 else if (syms
[mid
]->value
> value
)
3215 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3217 bfd_vma vma
= *(bfd_vma
*) ptr
;
3218 return ((section
->flags
& SEC_ALLOC
) != 0
3219 && section
->vma
<= vma
3220 && vma
< section
->vma
+ section
->size
);
3223 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3224 entry syms. Also generate @plt symbols for the glink branch table.
3225 Returns count of synthetic symbols in RET or -1 on error. */
3228 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3229 long static_count
, asymbol
**static_syms
,
3230 long dyn_count
, asymbol
**dyn_syms
,
3237 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3238 asection
*opd
= NULL
;
3239 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3241 int abi
= abiversion (abfd
);
3247 opd
= bfd_get_section_by_name (abfd
, ".opd");
3248 if (opd
== NULL
&& abi
== 1)
3252 symcount
= static_count
;
3254 symcount
+= dyn_count
;
3258 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3262 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3264 /* Use both symbol tables. */
3265 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3266 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3268 else if (!relocatable
&& static_count
== 0)
3269 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3271 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3273 synthetic_relocatable
= relocatable
;
3274 synthetic_opd
= opd
;
3275 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3277 if (!relocatable
&& symcount
> 1)
3280 /* Trim duplicate syms, since we may have merged the normal and
3281 dynamic symbols. Actually, we only care about syms that have
3282 different values, so trim any with the same value. */
3283 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3284 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3285 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3286 syms
[j
++] = syms
[i
];
3291 /* Note that here and in compare_symbols we can't compare opd and
3292 sym->section directly. With separate debug info files, the
3293 symbols will be extracted from the debug file while abfd passed
3294 to this function is the real binary. */
3295 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3299 for (; i
< symcount
; ++i
)
3300 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3301 != (SEC_CODE
| SEC_ALLOC
))
3302 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3306 for (; i
< symcount
; ++i
)
3307 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3312 for (; i
< symcount
; ++i
)
3313 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3317 for (; i
< symcount
; ++i
)
3318 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3319 != (SEC_CODE
| SEC_ALLOC
))
3327 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3332 if (opdsymend
== secsymend
)
3335 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3336 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3340 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3347 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3351 while (r
< opd
->relocation
+ relcount
3352 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3355 if (r
== opd
->relocation
+ relcount
)
3358 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3361 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3364 sym
= *r
->sym_ptr_ptr
;
3365 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3366 sym
->section
->id
, sym
->value
+ r
->addend
))
3369 size
+= sizeof (asymbol
);
3370 size
+= strlen (syms
[i
]->name
) + 2;
3376 s
= *ret
= bfd_malloc (size
);
3383 names
= (char *) (s
+ count
);
3385 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3389 while (r
< opd
->relocation
+ relcount
3390 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3393 if (r
== opd
->relocation
+ relcount
)
3396 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3399 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3402 sym
= *r
->sym_ptr_ptr
;
3403 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3404 sym
->section
->id
, sym
->value
+ r
->addend
))
3409 s
->flags
|= BSF_SYNTHETIC
;
3410 s
->section
= sym
->section
;
3411 s
->value
= sym
->value
+ r
->addend
;
3414 len
= strlen (syms
[i
]->name
);
3415 memcpy (names
, syms
[i
]->name
, len
+ 1);
3417 /* Have udata.p point back to the original symbol this
3418 synthetic symbol was derived from. */
3419 s
->udata
.p
= syms
[i
];
3426 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3427 bfd_byte
*contents
= NULL
;
3430 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3431 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3434 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3436 free_contents_and_exit_err
:
3438 free_contents_and_exit
:
3445 for (i
= secsymend
; i
< opdsymend
; ++i
)
3449 /* Ignore bogus symbols. */
3450 if (syms
[i
]->value
> opd
->size
- 8)
3453 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3454 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3457 size
+= sizeof (asymbol
);
3458 size
+= strlen (syms
[i
]->name
) + 2;
3462 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3464 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3466 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3468 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3470 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3471 goto free_contents_and_exit_err
;
3473 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3474 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3477 extdynend
= extdyn
+ dynamic
->size
;
3478 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3480 Elf_Internal_Dyn dyn
;
3481 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3483 if (dyn
.d_tag
== DT_NULL
)
3486 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3488 /* The first glink stub starts at offset 32; see
3489 comment in ppc64_elf_finish_dynamic_sections. */
3490 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3491 /* The .glink section usually does not survive the final
3492 link; search for the section (usually .text) where the
3493 glink stubs now reside. */
3494 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3505 /* Determine __glink trampoline by reading the relative branch
3506 from the first glink stub. */
3508 unsigned int off
= 0;
3510 while (bfd_get_section_contents (abfd
, glink
, buf
,
3511 glink_vma
+ off
- glink
->vma
, 4))
3513 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3515 if ((insn
& ~0x3fffffc) == 0)
3517 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3526 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3528 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3531 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3532 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3533 goto free_contents_and_exit_err
;
3535 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3536 size
+= plt_count
* sizeof (asymbol
);
3538 p
= relplt
->relocation
;
3539 for (i
= 0; i
< plt_count
; i
++, p
++)
3541 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3543 size
+= sizeof ("+0x") - 1 + 16;
3549 goto free_contents_and_exit
;
3550 s
= *ret
= bfd_malloc (size
);
3552 goto free_contents_and_exit_err
;
3554 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3556 for (i
= secsymend
; i
< opdsymend
; ++i
)
3560 if (syms
[i
]->value
> opd
->size
- 8)
3563 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3564 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3568 asection
*sec
= abfd
->sections
;
3575 long mid
= (lo
+ hi
) >> 1;
3576 if (syms
[mid
]->section
->vma
< ent
)
3578 else if (syms
[mid
]->section
->vma
> ent
)
3582 sec
= syms
[mid
]->section
;
3587 if (lo
>= hi
&& lo
> codesecsym
)
3588 sec
= syms
[lo
- 1]->section
;
3590 for (; sec
!= NULL
; sec
= sec
->next
)
3594 /* SEC_LOAD may not be set if SEC is from a separate debug
3596 if ((sec
->flags
& SEC_ALLOC
) == 0)
3598 if ((sec
->flags
& SEC_CODE
) != 0)
3601 s
->flags
|= BSF_SYNTHETIC
;
3602 s
->value
= ent
- s
->section
->vma
;
3605 len
= strlen (syms
[i
]->name
);
3606 memcpy (names
, syms
[i
]->name
, len
+ 1);
3608 /* Have udata.p point back to the original symbol this
3609 synthetic symbol was derived from. */
3610 s
->udata
.p
= syms
[i
];
3616 if (glink
!= NULL
&& relplt
!= NULL
)
3620 /* Add a symbol for the main glink trampoline. */
3621 memset (s
, 0, sizeof *s
);
3623 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3625 s
->value
= resolv_vma
- glink
->vma
;
3627 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3628 names
+= sizeof ("__glink_PLTresolve");
3633 /* FIXME: It would be very much nicer to put sym@plt on the
3634 stub rather than on the glink branch table entry. The
3635 objdump disassembler would then use a sensible symbol
3636 name on plt calls. The difficulty in doing so is
3637 a) finding the stubs, and,
3638 b) matching stubs against plt entries, and,
3639 c) there can be multiple stubs for a given plt entry.
3641 Solving (a) could be done by code scanning, but older
3642 ppc64 binaries used different stubs to current code.
3643 (b) is the tricky one since you need to known the toc
3644 pointer for at least one function that uses a pic stub to
3645 be able to calculate the plt address referenced.
3646 (c) means gdb would need to set multiple breakpoints (or
3647 find the glink branch itself) when setting breakpoints
3648 for pending shared library loads. */
3649 p
= relplt
->relocation
;
3650 for (i
= 0; i
< plt_count
; i
++, p
++)
3654 *s
= **p
->sym_ptr_ptr
;
3655 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3656 we are defining a symbol, ensure one of them is set. */
3657 if ((s
->flags
& BSF_LOCAL
) == 0)
3658 s
->flags
|= BSF_GLOBAL
;
3659 s
->flags
|= BSF_SYNTHETIC
;
3661 s
->value
= glink_vma
- glink
->vma
;
3664 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3665 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3669 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3670 names
+= sizeof ("+0x") - 1;
3671 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3672 names
+= strlen (names
);
3674 memcpy (names
, "@plt", sizeof ("@plt"));
3675 names
+= sizeof ("@plt");
3695 /* The following functions are specific to the ELF linker, while
3696 functions above are used generally. Those named ppc64_elf_* are
3697 called by the main ELF linker code. They appear in this file more
3698 or less in the order in which they are called. eg.
3699 ppc64_elf_check_relocs is called early in the link process,
3700 ppc64_elf_finish_dynamic_sections is one of the last functions
3703 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3704 functions have both a function code symbol and a function descriptor
3705 symbol. A call to foo in a relocatable object file looks like:
3712 The function definition in another object file might be:
3716 . .quad .TOC.@tocbase
3722 When the linker resolves the call during a static link, the branch
3723 unsurprisingly just goes to .foo and the .opd information is unused.
3724 If the function definition is in a shared library, things are a little
3725 different: The call goes via a plt call stub, the opd information gets
3726 copied to the plt, and the linker patches the nop.
3734 . std 2,40(1) # in practice, the call stub
3735 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3736 . addi 11,11,Lfoo@toc@l # this is the general idea
3744 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3746 The "reloc ()" notation is supposed to indicate that the linker emits
3747 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3750 What are the difficulties here? Well, firstly, the relocations
3751 examined by the linker in check_relocs are against the function code
3752 sym .foo, while the dynamic relocation in the plt is emitted against
3753 the function descriptor symbol, foo. Somewhere along the line, we need
3754 to carefully copy dynamic link information from one symbol to the other.
3755 Secondly, the generic part of the elf linker will make .foo a dynamic
3756 symbol as is normal for most other backends. We need foo dynamic
3757 instead, at least for an application final link. However, when
3758 creating a shared library containing foo, we need to have both symbols
3759 dynamic so that references to .foo are satisfied during the early
3760 stages of linking. Otherwise the linker might decide to pull in a
3761 definition from some other object, eg. a static library.
3763 Update: As of August 2004, we support a new convention. Function
3764 calls may use the function descriptor symbol, ie. "bl foo". This
3765 behaves exactly as "bl .foo". */
3767 /* Of those relocs that might be copied as dynamic relocs, this function
3768 selects those that must be copied when linking a shared library,
3769 even when the symbol is local. */
3772 must_be_dyn_reloc (struct bfd_link_info
*info
,
3773 enum elf_ppc64_reloc_type r_type
)
3785 case R_PPC64_TPREL16
:
3786 case R_PPC64_TPREL16_LO
:
3787 case R_PPC64_TPREL16_HI
:
3788 case R_PPC64_TPREL16_HA
:
3789 case R_PPC64_TPREL16_DS
:
3790 case R_PPC64_TPREL16_LO_DS
:
3791 case R_PPC64_TPREL16_HIGH
:
3792 case R_PPC64_TPREL16_HIGHA
:
3793 case R_PPC64_TPREL16_HIGHER
:
3794 case R_PPC64_TPREL16_HIGHERA
:
3795 case R_PPC64_TPREL16_HIGHEST
:
3796 case R_PPC64_TPREL16_HIGHESTA
:
3797 case R_PPC64_TPREL64
:
3798 return !bfd_link_executable (info
);
3802 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3803 copying dynamic variables from a shared lib into an app's dynbss
3804 section, and instead use a dynamic relocation to point into the
3805 shared lib. With code that gcc generates, it's vital that this be
3806 enabled; In the PowerPC64 ABI, the address of a function is actually
3807 the address of a function descriptor, which resides in the .opd
3808 section. gcc uses the descriptor directly rather than going via the
3809 GOT as some other ABI's do, which means that initialized function
3810 pointers must reference the descriptor. Thus, a function pointer
3811 initialized to the address of a function in a shared library will
3812 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3813 redefines the function descriptor symbol to point to the copy. This
3814 presents a problem as a plt entry for that function is also
3815 initialized from the function descriptor symbol and the copy reloc
3816 may not be initialized first. */
3817 #define ELIMINATE_COPY_RELOCS 1
3819 /* Section name for stubs is the associated section name plus this
3821 #define STUB_SUFFIX ".stub"
3824 ppc_stub_long_branch:
3825 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3826 destination, but a 24 bit branch in a stub section will reach.
3829 ppc_stub_plt_branch:
3830 Similar to the above, but a 24 bit branch in the stub section won't
3831 reach its destination.
3832 . addis %r11,%r2,xxx@toc@ha
3833 . ld %r12,xxx@toc@l(%r11)
3838 Used to call a function in a shared library. If it so happens that
3839 the plt entry referenced crosses a 64k boundary, then an extra
3840 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3842 . addis %r11,%r2,xxx@toc@ha
3843 . ld %r12,xxx+0@toc@l(%r11)
3845 . ld %r2,xxx+8@toc@l(%r11)
3846 . ld %r11,xxx+16@toc@l(%r11)
3849 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3850 code to adjust the value and save r2 to support multiple toc sections.
3851 A ppc_stub_long_branch with an r2 offset looks like:
3853 . addis %r2,%r2,off@ha
3854 . addi %r2,%r2,off@l
3857 A ppc_stub_plt_branch with an r2 offset looks like:
3859 . addis %r11,%r2,xxx@toc@ha
3860 . ld %r12,xxx@toc@l(%r11)
3861 . addis %r2,%r2,off@ha
3862 . addi %r2,%r2,off@l
3866 In cases where the "addis" instruction would add zero, the "addis" is
3867 omitted and following instructions modified slightly in some cases.
3870 enum ppc_stub_type
{
3872 ppc_stub_long_branch
,
3873 ppc_stub_long_branch_r2off
,
3874 ppc_stub_plt_branch
,
3875 ppc_stub_plt_branch_r2off
,
3877 ppc_stub_plt_call_r2save
,
3878 ppc_stub_global_entry
,
3882 /* Information on stub grouping. */
3885 /* The stub section. */
3887 /* This is the section to which stubs in the group will be attached. */
3890 struct map_stub
*next
;
3891 /* Whether to emit a copy of register save/restore functions in this
3896 struct ppc_stub_hash_entry
{
3898 /* Base hash table entry structure. */
3899 struct bfd_hash_entry root
;
3901 enum ppc_stub_type stub_type
;
3903 /* Group information. */
3904 struct map_stub
*group
;
3906 /* Offset within stub_sec of the beginning of this stub. */
3907 bfd_vma stub_offset
;
3909 /* Given the symbol's value and its section we can determine its final
3910 value when building the stubs (so the stub knows where to jump. */
3911 bfd_vma target_value
;
3912 asection
*target_section
;
3914 /* The symbol table entry, if any, that this was derived from. */
3915 struct ppc_link_hash_entry
*h
;
3916 struct plt_entry
*plt_ent
;
3918 /* Symbol st_other. */
3919 unsigned char other
;
3922 struct ppc_branch_hash_entry
{
3924 /* Base hash table entry structure. */
3925 struct bfd_hash_entry root
;
3927 /* Offset within branch lookup table. */
3928 unsigned int offset
;
3930 /* Generation marker. */
3934 /* Used to track dynamic relocations for local symbols. */
3935 struct ppc_dyn_relocs
3937 struct ppc_dyn_relocs
*next
;
3939 /* The input section of the reloc. */
3942 /* Total number of relocs copied for the input section. */
3943 unsigned int count
: 31;
3945 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3946 unsigned int ifunc
: 1;
3949 struct ppc_link_hash_entry
3951 struct elf_link_hash_entry elf
;
3954 /* A pointer to the most recently used stub hash entry against this
3956 struct ppc_stub_hash_entry
*stub_cache
;
3958 /* A pointer to the next symbol starting with a '.' */
3959 struct ppc_link_hash_entry
*next_dot_sym
;
3962 /* Track dynamic relocs copied for this symbol. */
3963 struct elf_dyn_relocs
*dyn_relocs
;
3965 /* Chain of aliases referring to a weakdef. */
3966 struct ppc_link_hash_entry
*weakref
;
3968 /* Link between function code and descriptor symbols. */
3969 struct ppc_link_hash_entry
*oh
;
3971 /* Flag function code and descriptor symbols. */
3972 unsigned int is_func
:1;
3973 unsigned int is_func_descriptor
:1;
3974 unsigned int fake
:1;
3976 /* Whether global opd/toc sym has been adjusted or not.
3977 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3978 should be set for all globals defined in any opd/toc section. */
3979 unsigned int adjust_done
:1;
3981 /* Set if we twiddled this symbol to weak at some stage. */
3982 unsigned int was_undefined
:1;
3984 /* Set if this is an out-of-line register save/restore function,
3985 with non-standard calling convention. */
3986 unsigned int save_res
:1;
3988 /* Contexts in which symbol is used in the GOT (or TOC).
3989 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3990 corresponding relocs are encountered during check_relocs.
3991 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3992 indicate the corresponding GOT entry type is not needed.
3993 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3994 a TPREL one. We use a separate flag rather than setting TPREL
3995 just for convenience in distinguishing the two cases. */
3996 #define TLS_GD 1 /* GD reloc. */
3997 #define TLS_LD 2 /* LD reloc. */
3998 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3999 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4000 #define TLS_TLS 16 /* Any TLS reloc. */
4001 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4002 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4003 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4004 unsigned char tls_mask
;
4007 /* ppc64 ELF linker hash table. */
4009 struct ppc_link_hash_table
4011 struct elf_link_hash_table elf
;
4013 /* The stub hash table. */
4014 struct bfd_hash_table stub_hash_table
;
4016 /* Another hash table for plt_branch stubs. */
4017 struct bfd_hash_table branch_hash_table
;
4019 /* Hash table for function prologue tocsave. */
4020 htab_t tocsave_htab
;
4022 /* Various options and other info passed from the linker. */
4023 struct ppc64_elf_params
*params
;
4025 /* The size of sec_info below. */
4026 unsigned int sec_info_arr_size
;
4028 /* Per-section array of extra section info. Done this way rather
4029 than as part of ppc64_elf_section_data so we have the info for
4030 non-ppc64 sections. */
4033 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4038 /* The section group that this section belongs to. */
4039 struct map_stub
*group
;
4040 /* A temp section list pointer. */
4045 /* Linked list of groups. */
4046 struct map_stub
*group
;
4048 /* Temp used when calculating TOC pointers. */
4051 asection
*toc_first_sec
;
4053 /* Used when adding symbols. */
4054 struct ppc_link_hash_entry
*dot_syms
;
4056 /* Shortcuts to get to dynamic linker sections. */
4063 asection
*glink_eh_frame
;
4065 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4066 struct ppc_link_hash_entry
*tls_get_addr
;
4067 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4069 /* The size of reliplt used by got entry relocs. */
4070 bfd_size_type got_reli_size
;
4073 unsigned long stub_count
[ppc_stub_global_entry
];
4075 /* Number of stubs against global syms. */
4076 unsigned long stub_globals
;
4078 /* Set if we're linking code with function descriptors. */
4079 unsigned int opd_abi
:1;
4081 /* Support for multiple toc sections. */
4082 unsigned int do_multi_toc
:1;
4083 unsigned int multi_toc_needed
:1;
4084 unsigned int second_toc_pass
:1;
4085 unsigned int do_toc_opt
:1;
4088 unsigned int stub_error
:1;
4090 /* Temp used by ppc64_elf_before_check_relocs. */
4091 unsigned int twiddled_syms
:1;
4093 /* Incremented every time we size stubs. */
4094 unsigned int stub_iteration
;
4096 /* Small local sym cache. */
4097 struct sym_cache sym_cache
;
4100 /* Rename some of the generic section flags to better document how they
4103 /* Nonzero if this section has TLS related relocations. */
4104 #define has_tls_reloc sec_flg0
4106 /* Nonzero if this section has a call to __tls_get_addr. */
4107 #define has_tls_get_addr_call sec_flg1
4109 /* Nonzero if this section has any toc or got relocs. */
4110 #define has_toc_reloc sec_flg2
4112 /* Nonzero if this section has a call to another section that uses
4114 #define makes_toc_func_call sec_flg3
4116 /* Recursion protection when determining above flag. */
4117 #define call_check_in_progress sec_flg4
4118 #define call_check_done sec_flg5
4120 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4122 #define ppc_hash_table(p) \
4123 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4124 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4126 #define ppc_stub_hash_lookup(table, string, create, copy) \
4127 ((struct ppc_stub_hash_entry *) \
4128 bfd_hash_lookup ((table), (string), (create), (copy)))
4130 #define ppc_branch_hash_lookup(table, string, create, copy) \
4131 ((struct ppc_branch_hash_entry *) \
4132 bfd_hash_lookup ((table), (string), (create), (copy)))
4134 /* Create an entry in the stub hash table. */
4136 static struct bfd_hash_entry
*
4137 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4138 struct bfd_hash_table
*table
,
4141 /* Allocate the structure if it has not already been allocated by a
4145 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4150 /* Call the allocation method of the superclass. */
4151 entry
= bfd_hash_newfunc (entry
, table
, string
);
4154 struct ppc_stub_hash_entry
*eh
;
4156 /* Initialize the local fields. */
4157 eh
= (struct ppc_stub_hash_entry
*) entry
;
4158 eh
->stub_type
= ppc_stub_none
;
4160 eh
->stub_offset
= 0;
4161 eh
->target_value
= 0;
4162 eh
->target_section
= NULL
;
4171 /* Create an entry in the branch hash table. */
4173 static struct bfd_hash_entry
*
4174 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4175 struct bfd_hash_table
*table
,
4178 /* Allocate the structure if it has not already been allocated by a
4182 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4187 /* Call the allocation method of the superclass. */
4188 entry
= bfd_hash_newfunc (entry
, table
, string
);
4191 struct ppc_branch_hash_entry
*eh
;
4193 /* Initialize the local fields. */
4194 eh
= (struct ppc_branch_hash_entry
*) entry
;
4202 /* Create an entry in a ppc64 ELF linker hash table. */
4204 static struct bfd_hash_entry
*
4205 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4206 struct bfd_hash_table
*table
,
4209 /* Allocate the structure if it has not already been allocated by a
4213 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4218 /* Call the allocation method of the superclass. */
4219 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4222 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4224 memset (&eh
->u
.stub_cache
, 0,
4225 (sizeof (struct ppc_link_hash_entry
)
4226 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4228 /* When making function calls, old ABI code references function entry
4229 points (dot symbols), while new ABI code references the function
4230 descriptor symbol. We need to make any combination of reference and
4231 definition work together, without breaking archive linking.
4233 For a defined function "foo" and an undefined call to "bar":
4234 An old object defines "foo" and ".foo", references ".bar" (possibly
4236 A new object defines "foo" and references "bar".
4238 A new object thus has no problem with its undefined symbols being
4239 satisfied by definitions in an old object. On the other hand, the
4240 old object won't have ".bar" satisfied by a new object.
4242 Keep a list of newly added dot-symbols. */
4244 if (string
[0] == '.')
4246 struct ppc_link_hash_table
*htab
;
4248 htab
= (struct ppc_link_hash_table
*) table
;
4249 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4250 htab
->dot_syms
= eh
;
4257 struct tocsave_entry
{
4263 tocsave_htab_hash (const void *p
)
4265 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4266 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4270 tocsave_htab_eq (const void *p1
, const void *p2
)
4272 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4273 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4274 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4277 /* Destroy a ppc64 ELF linker hash table. */
4280 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4282 struct ppc_link_hash_table
*htab
;
4284 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4285 if (htab
->tocsave_htab
)
4286 htab_delete (htab
->tocsave_htab
);
4287 bfd_hash_table_free (&htab
->branch_hash_table
);
4288 bfd_hash_table_free (&htab
->stub_hash_table
);
4289 _bfd_elf_link_hash_table_free (obfd
);
4292 /* Create a ppc64 ELF linker hash table. */
4294 static struct bfd_link_hash_table
*
4295 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4297 struct ppc_link_hash_table
*htab
;
4298 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4300 htab
= bfd_zmalloc (amt
);
4304 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4305 sizeof (struct ppc_link_hash_entry
),
4312 /* Init the stub hash table too. */
4313 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4314 sizeof (struct ppc_stub_hash_entry
)))
4316 _bfd_elf_link_hash_table_free (abfd
);
4320 /* And the branch hash table. */
4321 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4322 sizeof (struct ppc_branch_hash_entry
)))
4324 bfd_hash_table_free (&htab
->stub_hash_table
);
4325 _bfd_elf_link_hash_table_free (abfd
);
4329 htab
->tocsave_htab
= htab_try_create (1024,
4333 if (htab
->tocsave_htab
== NULL
)
4335 ppc64_elf_link_hash_table_free (abfd
);
4338 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4340 /* Initializing two fields of the union is just cosmetic. We really
4341 only care about glist, but when compiled on a 32-bit host the
4342 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4343 debugger inspection of these fields look nicer. */
4344 htab
->elf
.init_got_refcount
.refcount
= 0;
4345 htab
->elf
.init_got_refcount
.glist
= NULL
;
4346 htab
->elf
.init_plt_refcount
.refcount
= 0;
4347 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4348 htab
->elf
.init_got_offset
.offset
= 0;
4349 htab
->elf
.init_got_offset
.glist
= NULL
;
4350 htab
->elf
.init_plt_offset
.offset
= 0;
4351 htab
->elf
.init_plt_offset
.glist
= NULL
;
4353 return &htab
->elf
.root
;
4356 /* Create sections for linker generated code. */
4359 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4361 struct ppc_link_hash_table
*htab
;
4364 htab
= ppc_hash_table (info
);
4366 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4367 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4368 if (htab
->params
->save_restore_funcs
)
4370 /* Create .sfpr for code to save and restore fp regs. */
4371 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4373 if (htab
->sfpr
== NULL
4374 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4378 if (bfd_link_relocatable (info
))
4381 /* Create .glink for lazy dynamic linking support. */
4382 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4384 if (htab
->glink
== NULL
4385 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4388 if (!info
->no_ld_generated_unwind_info
)
4390 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4391 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4392 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4395 if (htab
->glink_eh_frame
== NULL
4396 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4400 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4401 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4402 if (htab
->elf
.iplt
== NULL
4403 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4406 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4407 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4409 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4410 if (htab
->elf
.irelplt
== NULL
4411 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4414 /* Create branch lookup table for plt_branch stubs. */
4415 flags
= (SEC_ALLOC
| SEC_LOAD
4416 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4417 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4419 if (htab
->brlt
== NULL
4420 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4423 if (!bfd_link_pic (info
))
4426 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4427 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4428 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4431 if (htab
->relbrlt
== NULL
4432 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4438 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4441 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4442 struct ppc64_elf_params
*params
)
4444 struct ppc_link_hash_table
*htab
;
4446 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4448 /* Always hook our dynamic sections into the first bfd, which is the
4449 linker created stub bfd. This ensures that the GOT header is at
4450 the start of the output TOC section. */
4451 htab
= ppc_hash_table (info
);
4452 htab
->elf
.dynobj
= params
->stub_bfd
;
4453 htab
->params
= params
;
4455 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4458 /* Build a name for an entry in the stub hash table. */
4461 ppc_stub_name (const asection
*input_section
,
4462 const asection
*sym_sec
,
4463 const struct ppc_link_hash_entry
*h
,
4464 const Elf_Internal_Rela
*rel
)
4469 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4470 offsets from a sym as a branch target? In fact, we could
4471 probably assume the addend is always zero. */
4472 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4476 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4477 stub_name
= bfd_malloc (len
);
4478 if (stub_name
== NULL
)
4481 len
= sprintf (stub_name
, "%08x.%s+%x",
4482 input_section
->id
& 0xffffffff,
4483 h
->elf
.root
.root
.string
,
4484 (int) rel
->r_addend
& 0xffffffff);
4488 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4489 stub_name
= bfd_malloc (len
);
4490 if (stub_name
== NULL
)
4493 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4494 input_section
->id
& 0xffffffff,
4495 sym_sec
->id
& 0xffffffff,
4496 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4497 (int) rel
->r_addend
& 0xffffffff);
4499 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4500 stub_name
[len
- 2] = 0;
4504 /* Look up an entry in the stub hash. Stub entries are cached because
4505 creating the stub name takes a bit of time. */
4507 static struct ppc_stub_hash_entry
*
4508 ppc_get_stub_entry (const asection
*input_section
,
4509 const asection
*sym_sec
,
4510 struct ppc_link_hash_entry
*h
,
4511 const Elf_Internal_Rela
*rel
,
4512 struct ppc_link_hash_table
*htab
)
4514 struct ppc_stub_hash_entry
*stub_entry
;
4515 struct map_stub
*group
;
4517 /* If this input section is part of a group of sections sharing one
4518 stub section, then use the id of the first section in the group.
4519 Stub names need to include a section id, as there may well be
4520 more than one stub used to reach say, printf, and we need to
4521 distinguish between them. */
4522 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4526 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4527 && h
->u
.stub_cache
->h
== h
4528 && h
->u
.stub_cache
->group
== group
)
4530 stub_entry
= h
->u
.stub_cache
;
4536 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4537 if (stub_name
== NULL
)
4540 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4541 stub_name
, FALSE
, FALSE
);
4543 h
->u
.stub_cache
= stub_entry
;
4551 /* Add a new stub entry to the stub hash. Not all fields of the new
4552 stub entry are initialised. */
4554 static struct ppc_stub_hash_entry
*
4555 ppc_add_stub (const char *stub_name
,
4557 struct bfd_link_info
*info
)
4559 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4560 struct map_stub
*group
;
4563 struct ppc_stub_hash_entry
*stub_entry
;
4565 group
= htab
->sec_info
[section
->id
].u
.group
;
4566 link_sec
= group
->link_sec
;
4567 stub_sec
= group
->stub_sec
;
4568 if (stub_sec
== NULL
)
4574 namelen
= strlen (link_sec
->name
);
4575 len
= namelen
+ sizeof (STUB_SUFFIX
);
4576 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4580 memcpy (s_name
, link_sec
->name
, namelen
);
4581 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4582 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4583 if (stub_sec
== NULL
)
4585 group
->stub_sec
= stub_sec
;
4588 /* Enter this entry into the linker stub hash table. */
4589 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4591 if (stub_entry
== NULL
)
4593 /* xgettext:c-format */
4594 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4595 section
->owner
, stub_name
);
4599 stub_entry
->group
= group
;
4600 stub_entry
->stub_offset
= 0;
4604 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4605 not already done. */
4608 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4610 asection
*got
, *relgot
;
4612 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4614 if (!is_ppc64_elf (abfd
))
4620 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4623 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4624 | SEC_LINKER_CREATED
);
4626 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4628 || !bfd_set_section_alignment (abfd
, got
, 3))
4631 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4632 flags
| SEC_READONLY
);
4634 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4637 ppc64_elf_tdata (abfd
)->got
= got
;
4638 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4642 /* Create the dynamic sections, and set up shortcuts. */
4645 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4647 struct ppc_link_hash_table
*htab
;
4649 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4652 htab
= ppc_hash_table (info
);
4656 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4657 if (!bfd_link_pic (info
))
4658 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4660 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4661 || (!bfd_link_pic (info
) && !htab
->relbss
))
4667 /* Follow indirect and warning symbol links. */
4669 static inline struct bfd_link_hash_entry
*
4670 follow_link (struct bfd_link_hash_entry
*h
)
4672 while (h
->type
== bfd_link_hash_indirect
4673 || h
->type
== bfd_link_hash_warning
)
4678 static inline struct elf_link_hash_entry
*
4679 elf_follow_link (struct elf_link_hash_entry
*h
)
4681 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4684 static inline struct ppc_link_hash_entry
*
4685 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4687 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4690 /* Merge PLT info on FROM with that on TO. */
4693 move_plt_plist (struct ppc_link_hash_entry
*from
,
4694 struct ppc_link_hash_entry
*to
)
4696 if (from
->elf
.plt
.plist
!= NULL
)
4698 if (to
->elf
.plt
.plist
!= NULL
)
4700 struct plt_entry
**entp
;
4701 struct plt_entry
*ent
;
4703 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4705 struct plt_entry
*dent
;
4707 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4708 if (dent
->addend
== ent
->addend
)
4710 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4717 *entp
= to
->elf
.plt
.plist
;
4720 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4721 from
->elf
.plt
.plist
= NULL
;
4725 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4728 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4729 struct elf_link_hash_entry
*dir
,
4730 struct elf_link_hash_entry
*ind
)
4732 struct ppc_link_hash_entry
*edir
, *eind
;
4734 edir
= (struct ppc_link_hash_entry
*) dir
;
4735 eind
= (struct ppc_link_hash_entry
*) ind
;
4737 edir
->is_func
|= eind
->is_func
;
4738 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4739 edir
->tls_mask
|= eind
->tls_mask
;
4740 if (eind
->oh
!= NULL
)
4741 edir
->oh
= ppc_follow_link (eind
->oh
);
4743 /* If called to transfer flags for a weakdef during processing
4744 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4745 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4746 if (!(ELIMINATE_COPY_RELOCS
4747 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4748 && edir
->elf
.dynamic_adjusted
))
4749 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4751 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4752 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4753 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4754 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4755 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4757 /* If we were called to copy over info for a weak sym, don't copy
4758 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4759 in order to simplify readonly_dynrelocs and save a field in the
4760 symbol hash entry, but that means dyn_relocs can't be used in any
4761 tests about a specific symbol, or affect other symbol flags which
4763 Chain weakdefs so we can get from the weakdef back to an alias.
4764 The list is circular so that we don't need to use u.weakdef as
4765 well as this list to look at all aliases. */
4766 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4768 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4773 cur
= edir
->weakref
;
4778 /* We can be called twice for the same symbols.
4779 Don't make multiple loops. */
4783 } while (cur
!= edir
);
4785 next
= add
->weakref
;
4788 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4789 edir
->weakref
= add
;
4792 } while (add
!= NULL
&& add
!= eind
);
4796 /* Copy over any dynamic relocs we may have on the indirect sym. */
4797 if (eind
->dyn_relocs
!= NULL
)
4799 if (edir
->dyn_relocs
!= NULL
)
4801 struct elf_dyn_relocs
**pp
;
4802 struct elf_dyn_relocs
*p
;
4804 /* Add reloc counts against the indirect sym to the direct sym
4805 list. Merge any entries against the same section. */
4806 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4808 struct elf_dyn_relocs
*q
;
4810 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4811 if (q
->sec
== p
->sec
)
4813 q
->pc_count
+= p
->pc_count
;
4814 q
->count
+= p
->count
;
4821 *pp
= edir
->dyn_relocs
;
4824 edir
->dyn_relocs
= eind
->dyn_relocs
;
4825 eind
->dyn_relocs
= NULL
;
4828 /* Copy over got entries that we may have already seen to the
4829 symbol which just became indirect. */
4830 if (eind
->elf
.got
.glist
!= NULL
)
4832 if (edir
->elf
.got
.glist
!= NULL
)
4834 struct got_entry
**entp
;
4835 struct got_entry
*ent
;
4837 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4839 struct got_entry
*dent
;
4841 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4842 if (dent
->addend
== ent
->addend
4843 && dent
->owner
== ent
->owner
4844 && dent
->tls_type
== ent
->tls_type
)
4846 dent
->got
.refcount
+= ent
->got
.refcount
;
4853 *entp
= edir
->elf
.got
.glist
;
4856 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4857 eind
->elf
.got
.glist
= NULL
;
4860 /* And plt entries. */
4861 move_plt_plist (eind
, edir
);
4863 if (eind
->elf
.dynindx
!= -1)
4865 if (edir
->elf
.dynindx
!= -1)
4866 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4867 edir
->elf
.dynstr_index
);
4868 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4869 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4870 eind
->elf
.dynindx
= -1;
4871 eind
->elf
.dynstr_index
= 0;
4875 /* Find the function descriptor hash entry from the given function code
4876 hash entry FH. Link the entries via their OH fields. */
4878 static struct ppc_link_hash_entry
*
4879 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4881 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4885 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4887 fdh
= (struct ppc_link_hash_entry
*)
4888 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4892 fdh
->is_func_descriptor
= 1;
4898 return ppc_follow_link (fdh
);
4901 /* Make a fake function descriptor sym for the code sym FH. */
4903 static struct ppc_link_hash_entry
*
4904 make_fdh (struct bfd_link_info
*info
,
4905 struct ppc_link_hash_entry
*fh
)
4909 struct bfd_link_hash_entry
*bh
;
4910 struct ppc_link_hash_entry
*fdh
;
4912 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4913 newsym
= bfd_make_empty_symbol (abfd
);
4914 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4915 newsym
->section
= bfd_und_section_ptr
;
4917 newsym
->flags
= BSF_WEAK
;
4920 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4921 newsym
->flags
, newsym
->section
,
4922 newsym
->value
, NULL
, FALSE
, FALSE
,
4926 fdh
= (struct ppc_link_hash_entry
*) bh
;
4927 fdh
->elf
.non_elf
= 0;
4929 fdh
->is_func_descriptor
= 1;
4936 /* Fix function descriptor symbols defined in .opd sections to be
4940 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4941 struct bfd_link_info
*info
,
4942 Elf_Internal_Sym
*isym
,
4944 flagword
*flags ATTRIBUTE_UNUSED
,
4948 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4949 && (ibfd
->flags
& DYNAMIC
) == 0
4950 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4951 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4954 && strcmp ((*sec
)->name
, ".opd") == 0)
4958 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4959 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4960 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4962 /* If the symbol is a function defined in .opd, and the function
4963 code is in a discarded group, let it appear to be undefined. */
4964 if (!bfd_link_relocatable (info
)
4965 && (*sec
)->reloc_count
!= 0
4966 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4967 FALSE
) != (bfd_vma
) -1
4968 && discarded_section (code_sec
))
4970 *sec
= bfd_und_section_ptr
;
4971 isym
->st_shndx
= SHN_UNDEF
;
4974 else if (*sec
!= NULL
4975 && strcmp ((*sec
)->name
, ".toc") == 0
4976 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4978 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4980 htab
->params
->object_in_toc
= 1;
4983 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4985 if (abiversion (ibfd
) == 0)
4986 set_abiversion (ibfd
, 2);
4987 else if (abiversion (ibfd
) == 1)
4989 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4990 " for ABI version 1\n"), name
);
4991 bfd_set_error (bfd_error_bad_value
);
4999 /* Merge non-visibility st_other attributes: local entry point. */
5002 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5003 const Elf_Internal_Sym
*isym
,
5004 bfd_boolean definition
,
5005 bfd_boolean dynamic
)
5007 if (definition
&& !dynamic
)
5008 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5009 | ELF_ST_VISIBILITY (h
->other
));
5012 /* This function makes an old ABI object reference to ".bar" cause the
5013 inclusion of a new ABI object archive that defines "bar".
5014 NAME is a symbol defined in an archive. Return a symbol in the hash
5015 table that might be satisfied by the archive symbols. */
5017 static struct elf_link_hash_entry
*
5018 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5019 struct bfd_link_info
*info
,
5022 struct elf_link_hash_entry
*h
;
5026 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5028 /* Don't return this sym if it is a fake function descriptor
5029 created by add_symbol_adjust. */
5030 && !(h
->root
.type
== bfd_link_hash_undefweak
5031 && ((struct ppc_link_hash_entry
*) h
)->fake
))
5037 len
= strlen (name
);
5038 dot_name
= bfd_alloc (abfd
, len
+ 2);
5039 if (dot_name
== NULL
)
5040 return (struct elf_link_hash_entry
*) 0 - 1;
5042 memcpy (dot_name
+ 1, name
, len
+ 1);
5043 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5044 bfd_release (abfd
, dot_name
);
5048 /* This function satisfies all old ABI object references to ".bar" if a
5049 new ABI object defines "bar". Well, at least, undefined dot symbols
5050 are made weak. This stops later archive searches from including an
5051 object if we already have a function descriptor definition. It also
5052 prevents the linker complaining about undefined symbols.
5053 We also check and correct mismatched symbol visibility here. The
5054 most restrictive visibility of the function descriptor and the
5055 function entry symbol is used. */
5058 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5060 struct ppc_link_hash_table
*htab
;
5061 struct ppc_link_hash_entry
*fdh
;
5063 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5066 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5067 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5069 if (eh
->elf
.root
.root
.string
[0] != '.')
5072 htab
= ppc_hash_table (info
);
5076 fdh
= lookup_fdh (eh
, htab
);
5079 if (!bfd_link_relocatable (info
)
5080 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5081 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5082 && eh
->elf
.ref_regular
)
5084 /* Make an undefweak function descriptor sym, which is enough to
5085 pull in an --as-needed shared lib, but won't cause link
5086 errors. Archives are handled elsewhere. */
5087 fdh
= make_fdh (info
, eh
);
5090 fdh
->elf
.ref_regular
= 1;
5095 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5096 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5097 if (entry_vis
< descr_vis
)
5098 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5099 else if (entry_vis
> descr_vis
)
5100 eh
->elf
.other
+= descr_vis
- entry_vis
;
5102 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
5103 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5104 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
5106 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
5107 eh
->was_undefined
= 1;
5108 htab
->twiddled_syms
= 1;
5115 /* Set up opd section info and abiversion for IBFD, and process list
5116 of dot-symbols we made in link_hash_newfunc. */
5119 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5121 struct ppc_link_hash_table
*htab
;
5122 struct ppc_link_hash_entry
**p
, *eh
;
5123 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5125 if (opd
!= NULL
&& opd
->size
!= 0)
5127 if (abiversion (ibfd
) == 0)
5128 set_abiversion (ibfd
, 1);
5129 else if (abiversion (ibfd
) >= 2)
5131 /* xgettext:c-format */
5132 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5134 ibfd
, abiversion (ibfd
));
5135 bfd_set_error (bfd_error_bad_value
);
5139 if ((ibfd
->flags
& DYNAMIC
) == 0
5140 && (opd
->flags
& SEC_RELOC
) != 0
5141 && opd
->reloc_count
!= 0
5142 && !bfd_is_abs_section (opd
->output_section
))
5144 /* Garbage collection needs some extra help with .opd sections.
5145 We don't want to necessarily keep everything referenced by
5146 relocs in .opd, as that would keep all functions. Instead,
5147 if we reference an .opd symbol (a function descriptor), we
5148 want to keep the function code symbol's section. This is
5149 easy for global symbols, but for local syms we need to keep
5150 information about the associated function section. */
5152 asection
**opd_sym_map
;
5154 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5155 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5156 if (opd_sym_map
== NULL
)
5158 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5159 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5160 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5164 if (!is_ppc64_elf (info
->output_bfd
))
5166 htab
= ppc_hash_table (info
);
5170 /* For input files without an explicit abiversion in e_flags
5171 we should have flagged any with symbol st_other bits set
5172 as ELFv1 and above flagged those with .opd as ELFv2.
5173 Set the output abiversion if not yet set, and for any input
5174 still ambiguous, take its abiversion from the output.
5175 Differences in ABI are reported later. */
5176 if (abiversion (info
->output_bfd
) == 0)
5177 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5178 else if (abiversion (ibfd
) == 0)
5179 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5181 p
= &htab
->dot_syms
;
5182 while ((eh
= *p
) != NULL
)
5185 if (&eh
->elf
== htab
->elf
.hgot
)
5187 else if (htab
->elf
.hgot
== NULL
5188 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5189 htab
->elf
.hgot
= &eh
->elf
;
5190 else if (!add_symbol_adjust (eh
, info
))
5192 p
= &eh
->u
.next_dot_sym
;
5195 /* Clear the list for non-ppc64 input files. */
5196 p
= &htab
->dot_syms
;
5197 while ((eh
= *p
) != NULL
)
5200 p
= &eh
->u
.next_dot_sym
;
5203 /* We need to fix the undefs list for any syms we have twiddled to
5205 if (htab
->twiddled_syms
)
5207 bfd_link_repair_undef_list (&htab
->elf
.root
);
5208 htab
->twiddled_syms
= 0;
5213 /* Undo hash table changes when an --as-needed input file is determined
5214 not to be needed. */
5217 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5218 struct bfd_link_info
*info
,
5219 enum notice_asneeded_action act
)
5221 if (act
== notice_not_needed
)
5223 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5228 htab
->dot_syms
= NULL
;
5230 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5233 /* If --just-symbols against a final linked binary, then assume we need
5234 toc adjusting stubs when calling functions defined there. */
5237 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5239 if ((sec
->flags
& SEC_CODE
) != 0
5240 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5241 && is_ppc64_elf (sec
->owner
))
5243 if (abiversion (sec
->owner
) >= 2
5244 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5245 sec
->has_toc_reloc
= 1;
5247 _bfd_elf_link_just_syms (sec
, info
);
5250 static struct plt_entry
**
5251 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5252 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5254 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5255 struct plt_entry
**local_plt
;
5256 unsigned char *local_got_tls_masks
;
5258 if (local_got_ents
== NULL
)
5260 bfd_size_type size
= symtab_hdr
->sh_info
;
5262 size
*= (sizeof (*local_got_ents
)
5263 + sizeof (*local_plt
)
5264 + sizeof (*local_got_tls_masks
));
5265 local_got_ents
= bfd_zalloc (abfd
, size
);
5266 if (local_got_ents
== NULL
)
5268 elf_local_got_ents (abfd
) = local_got_ents
;
5271 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5273 struct got_entry
*ent
;
5275 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5276 if (ent
->addend
== r_addend
5277 && ent
->owner
== abfd
5278 && ent
->tls_type
== tls_type
)
5282 bfd_size_type amt
= sizeof (*ent
);
5283 ent
= bfd_alloc (abfd
, amt
);
5286 ent
->next
= local_got_ents
[r_symndx
];
5287 ent
->addend
= r_addend
;
5289 ent
->tls_type
= tls_type
;
5290 ent
->is_indirect
= FALSE
;
5291 ent
->got
.refcount
= 0;
5292 local_got_ents
[r_symndx
] = ent
;
5294 ent
->got
.refcount
+= 1;
5297 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5298 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5299 local_got_tls_masks
[r_symndx
] |= tls_type
;
5301 return local_plt
+ r_symndx
;
5305 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5307 struct plt_entry
*ent
;
5309 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5310 if (ent
->addend
== addend
)
5314 bfd_size_type amt
= sizeof (*ent
);
5315 ent
= bfd_alloc (abfd
, amt
);
5319 ent
->addend
= addend
;
5320 ent
->plt
.refcount
= 0;
5323 ent
->plt
.refcount
+= 1;
5328 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5330 return (r_type
== R_PPC64_REL24
5331 || r_type
== R_PPC64_REL14
5332 || r_type
== R_PPC64_REL14_BRTAKEN
5333 || r_type
== R_PPC64_REL14_BRNTAKEN
5334 || r_type
== R_PPC64_ADDR24
5335 || r_type
== R_PPC64_ADDR14
5336 || r_type
== R_PPC64_ADDR14_BRTAKEN
5337 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5340 /* Look through the relocs for a section during the first phase, and
5341 calculate needed space in the global offset table, procedure
5342 linkage table, and dynamic reloc sections. */
5345 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5346 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5348 struct ppc_link_hash_table
*htab
;
5349 Elf_Internal_Shdr
*symtab_hdr
;
5350 struct elf_link_hash_entry
**sym_hashes
;
5351 const Elf_Internal_Rela
*rel
;
5352 const Elf_Internal_Rela
*rel_end
;
5354 asection
**opd_sym_map
;
5355 struct elf_link_hash_entry
*tga
, *dottga
;
5357 if (bfd_link_relocatable (info
))
5360 /* Don't do anything special with non-loaded, non-alloced sections.
5361 In particular, any relocs in such sections should not affect GOT
5362 and PLT reference counting (ie. we don't allow them to create GOT
5363 or PLT entries), there's no possibility or desire to optimize TLS
5364 relocs, and there's not much point in propagating relocs to shared
5365 libs that the dynamic linker won't relocate. */
5366 if ((sec
->flags
& SEC_ALLOC
) == 0)
5369 BFD_ASSERT (is_ppc64_elf (abfd
));
5371 htab
= ppc_hash_table (info
);
5375 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5376 FALSE
, FALSE
, TRUE
);
5377 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5378 FALSE
, FALSE
, TRUE
);
5379 symtab_hdr
= &elf_symtab_hdr (abfd
);
5380 sym_hashes
= elf_sym_hashes (abfd
);
5383 if (ppc64_elf_section_data (sec
) != NULL
5384 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5385 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5387 rel_end
= relocs
+ sec
->reloc_count
;
5388 for (rel
= relocs
; rel
< rel_end
; rel
++)
5390 unsigned long r_symndx
;
5391 struct elf_link_hash_entry
*h
;
5392 enum elf_ppc64_reloc_type r_type
;
5394 struct _ppc64_elf_section_data
*ppc64_sec
;
5395 struct plt_entry
**ifunc
, **plt_list
;
5397 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5398 if (r_symndx
< symtab_hdr
->sh_info
)
5402 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5403 h
= elf_follow_link (h
);
5405 /* PR15323, ref flags aren't set for references in the same
5407 h
->root
.non_ir_ref
= 1;
5409 if (h
== htab
->elf
.hgot
)
5410 sec
->has_toc_reloc
= 1;
5417 if (h
->type
== STT_GNU_IFUNC
)
5420 ifunc
= &h
->plt
.plist
;
5425 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5430 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5432 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5433 rel
->r_addend
, PLT_IFUNC
);
5439 r_type
= ELF64_R_TYPE (rel
->r_info
);
5444 /* These special tls relocs tie a call to __tls_get_addr with
5445 its parameter symbol. */
5448 case R_PPC64_GOT_TLSLD16
:
5449 case R_PPC64_GOT_TLSLD16_LO
:
5450 case R_PPC64_GOT_TLSLD16_HI
:
5451 case R_PPC64_GOT_TLSLD16_HA
:
5452 tls_type
= TLS_TLS
| TLS_LD
;
5455 case R_PPC64_GOT_TLSGD16
:
5456 case R_PPC64_GOT_TLSGD16_LO
:
5457 case R_PPC64_GOT_TLSGD16_HI
:
5458 case R_PPC64_GOT_TLSGD16_HA
:
5459 tls_type
= TLS_TLS
| TLS_GD
;
5462 case R_PPC64_GOT_TPREL16_DS
:
5463 case R_PPC64_GOT_TPREL16_LO_DS
:
5464 case R_PPC64_GOT_TPREL16_HI
:
5465 case R_PPC64_GOT_TPREL16_HA
:
5466 if (bfd_link_pic (info
))
5467 info
->flags
|= DF_STATIC_TLS
;
5468 tls_type
= TLS_TLS
| TLS_TPREL
;
5471 case R_PPC64_GOT_DTPREL16_DS
:
5472 case R_PPC64_GOT_DTPREL16_LO_DS
:
5473 case R_PPC64_GOT_DTPREL16_HI
:
5474 case R_PPC64_GOT_DTPREL16_HA
:
5475 tls_type
= TLS_TLS
| TLS_DTPREL
;
5477 sec
->has_tls_reloc
= 1;
5481 case R_PPC64_GOT16_DS
:
5482 case R_PPC64_GOT16_HA
:
5483 case R_PPC64_GOT16_HI
:
5484 case R_PPC64_GOT16_LO
:
5485 case R_PPC64_GOT16_LO_DS
:
5486 /* This symbol requires a global offset table entry. */
5487 sec
->has_toc_reloc
= 1;
5488 if (r_type
== R_PPC64_GOT_TLSLD16
5489 || r_type
== R_PPC64_GOT_TLSGD16
5490 || r_type
== R_PPC64_GOT_TPREL16_DS
5491 || r_type
== R_PPC64_GOT_DTPREL16_DS
5492 || r_type
== R_PPC64_GOT16
5493 || r_type
== R_PPC64_GOT16_DS
)
5495 htab
->do_multi_toc
= 1;
5496 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5499 if (ppc64_elf_tdata (abfd
)->got
== NULL
5500 && !create_got_section (abfd
, info
))
5505 struct ppc_link_hash_entry
*eh
;
5506 struct got_entry
*ent
;
5508 eh
= (struct ppc_link_hash_entry
*) h
;
5509 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5510 if (ent
->addend
== rel
->r_addend
5511 && ent
->owner
== abfd
5512 && ent
->tls_type
== tls_type
)
5516 bfd_size_type amt
= sizeof (*ent
);
5517 ent
= bfd_alloc (abfd
, amt
);
5520 ent
->next
= eh
->elf
.got
.glist
;
5521 ent
->addend
= rel
->r_addend
;
5523 ent
->tls_type
= tls_type
;
5524 ent
->is_indirect
= FALSE
;
5525 ent
->got
.refcount
= 0;
5526 eh
->elf
.got
.glist
= ent
;
5528 ent
->got
.refcount
+= 1;
5529 eh
->tls_mask
|= tls_type
;
5532 /* This is a global offset table entry for a local symbol. */
5533 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5534 rel
->r_addend
, tls_type
))
5537 /* We may also need a plt entry if the symbol turns out to be
5539 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5541 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5546 case R_PPC64_PLT16_HA
:
5547 case R_PPC64_PLT16_HI
:
5548 case R_PPC64_PLT16_LO
:
5551 /* This symbol requires a procedure linkage table entry. */
5556 if (h
->root
.root
.string
[0] == '.'
5557 && h
->root
.root
.string
[1] != '\0')
5558 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5559 plt_list
= &h
->plt
.plist
;
5561 if (plt_list
== NULL
)
5563 /* It does not make sense to have a procedure linkage
5564 table entry for a non-ifunc local symbol. */
5565 info
->callbacks
->einfo
5566 /* xgettext:c-format */
5567 (_("%P: %H: %s reloc against local symbol\n"),
5568 abfd
, sec
, rel
->r_offset
,
5569 ppc64_elf_howto_table
[r_type
]->name
);
5570 bfd_set_error (bfd_error_bad_value
);
5573 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5577 /* The following relocations don't need to propagate the
5578 relocation if linking a shared object since they are
5579 section relative. */
5580 case R_PPC64_SECTOFF
:
5581 case R_PPC64_SECTOFF_LO
:
5582 case R_PPC64_SECTOFF_HI
:
5583 case R_PPC64_SECTOFF_HA
:
5584 case R_PPC64_SECTOFF_DS
:
5585 case R_PPC64_SECTOFF_LO_DS
:
5586 case R_PPC64_DTPREL16
:
5587 case R_PPC64_DTPREL16_LO
:
5588 case R_PPC64_DTPREL16_HI
:
5589 case R_PPC64_DTPREL16_HA
:
5590 case R_PPC64_DTPREL16_DS
:
5591 case R_PPC64_DTPREL16_LO_DS
:
5592 case R_PPC64_DTPREL16_HIGH
:
5593 case R_PPC64_DTPREL16_HIGHA
:
5594 case R_PPC64_DTPREL16_HIGHER
:
5595 case R_PPC64_DTPREL16_HIGHERA
:
5596 case R_PPC64_DTPREL16_HIGHEST
:
5597 case R_PPC64_DTPREL16_HIGHESTA
:
5602 case R_PPC64_REL16_LO
:
5603 case R_PPC64_REL16_HI
:
5604 case R_PPC64_REL16_HA
:
5605 case R_PPC64_REL16DX_HA
:
5608 /* Not supported as a dynamic relocation. */
5609 case R_PPC64_ADDR64_LOCAL
:
5610 if (bfd_link_pic (info
))
5612 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5614 /* xgettext:c-format */
5615 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5616 "in shared libraries and PIEs.\n"),
5617 abfd
, sec
, rel
->r_offset
,
5618 ppc64_elf_howto_table
[r_type
]->name
);
5619 bfd_set_error (bfd_error_bad_value
);
5625 case R_PPC64_TOC16_DS
:
5626 htab
->do_multi_toc
= 1;
5627 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5629 case R_PPC64_TOC16_LO
:
5630 case R_PPC64_TOC16_HI
:
5631 case R_PPC64_TOC16_HA
:
5632 case R_PPC64_TOC16_LO_DS
:
5633 sec
->has_toc_reloc
= 1;
5640 /* This relocation describes the C++ object vtable hierarchy.
5641 Reconstruct it for later use during GC. */
5642 case R_PPC64_GNU_VTINHERIT
:
5643 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5647 /* This relocation describes which C++ vtable entries are actually
5648 used. Record for later use during GC. */
5649 case R_PPC64_GNU_VTENTRY
:
5650 BFD_ASSERT (h
!= NULL
);
5652 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5657 case R_PPC64_REL14_BRTAKEN
:
5658 case R_PPC64_REL14_BRNTAKEN
:
5660 asection
*dest
= NULL
;
5662 /* Heuristic: If jumping outside our section, chances are
5663 we are going to need a stub. */
5666 /* If the sym is weak it may be overridden later, so
5667 don't assume we know where a weak sym lives. */
5668 if (h
->root
.type
== bfd_link_hash_defined
)
5669 dest
= h
->root
.u
.def
.section
;
5673 Elf_Internal_Sym
*isym
;
5675 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5680 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5684 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5693 if (h
->root
.root
.string
[0] == '.'
5694 && h
->root
.root
.string
[1] != '\0')
5695 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5697 if (h
== tga
|| h
== dottga
)
5699 sec
->has_tls_reloc
= 1;
5701 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5702 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5703 /* We have a new-style __tls_get_addr call with
5707 /* Mark this section as having an old-style call. */
5708 sec
->has_tls_get_addr_call
= 1;
5710 plt_list
= &h
->plt
.plist
;
5713 /* We may need a .plt entry if the function this reloc
5714 refers to is in a shared lib. */
5716 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5720 case R_PPC64_ADDR14
:
5721 case R_PPC64_ADDR14_BRNTAKEN
:
5722 case R_PPC64_ADDR14_BRTAKEN
:
5723 case R_PPC64_ADDR24
:
5726 case R_PPC64_TPREL64
:
5727 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5728 if (bfd_link_pic (info
))
5729 info
->flags
|= DF_STATIC_TLS
;
5732 case R_PPC64_DTPMOD64
:
5733 if (rel
+ 1 < rel_end
5734 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5735 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5736 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5738 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5741 case R_PPC64_DTPREL64
:
5742 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5744 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5745 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5746 /* This is the second reloc of a dtpmod, dtprel pair.
5747 Don't mark with TLS_DTPREL. */
5751 sec
->has_tls_reloc
= 1;
5754 struct ppc_link_hash_entry
*eh
;
5755 eh
= (struct ppc_link_hash_entry
*) h
;
5756 eh
->tls_mask
|= tls_type
;
5759 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5760 rel
->r_addend
, tls_type
))
5763 ppc64_sec
= ppc64_elf_section_data (sec
);
5764 if (ppc64_sec
->sec_type
!= sec_toc
)
5768 /* One extra to simplify get_tls_mask. */
5769 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5770 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5771 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5773 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5774 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5775 if (ppc64_sec
->u
.toc
.add
== NULL
)
5777 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5778 ppc64_sec
->sec_type
= sec_toc
;
5780 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5781 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5782 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5784 /* Mark the second slot of a GD or LD entry.
5785 -1 to indicate GD and -2 to indicate LD. */
5786 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5787 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5788 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5789 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5792 case R_PPC64_TPREL16
:
5793 case R_PPC64_TPREL16_LO
:
5794 case R_PPC64_TPREL16_HI
:
5795 case R_PPC64_TPREL16_HA
:
5796 case R_PPC64_TPREL16_DS
:
5797 case R_PPC64_TPREL16_LO_DS
:
5798 case R_PPC64_TPREL16_HIGH
:
5799 case R_PPC64_TPREL16_HIGHA
:
5800 case R_PPC64_TPREL16_HIGHER
:
5801 case R_PPC64_TPREL16_HIGHERA
:
5802 case R_PPC64_TPREL16_HIGHEST
:
5803 case R_PPC64_TPREL16_HIGHESTA
:
5804 if (bfd_link_pic (info
))
5806 info
->flags
|= DF_STATIC_TLS
;
5811 case R_PPC64_ADDR64
:
5812 if (opd_sym_map
!= NULL
5813 && rel
+ 1 < rel_end
5814 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5818 if (h
->root
.root
.string
[0] == '.'
5819 && h
->root
.root
.string
[1] != 0
5820 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5823 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5828 Elf_Internal_Sym
*isym
;
5830 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5835 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5836 if (s
!= NULL
&& s
!= sec
)
5837 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5842 case R_PPC64_ADDR16
:
5843 case R_PPC64_ADDR16_DS
:
5844 case R_PPC64_ADDR16_HA
:
5845 case R_PPC64_ADDR16_HI
:
5846 case R_PPC64_ADDR16_HIGH
:
5847 case R_PPC64_ADDR16_HIGHA
:
5848 case R_PPC64_ADDR16_HIGHER
:
5849 case R_PPC64_ADDR16_HIGHERA
:
5850 case R_PPC64_ADDR16_HIGHEST
:
5851 case R_PPC64_ADDR16_HIGHESTA
:
5852 case R_PPC64_ADDR16_LO
:
5853 case R_PPC64_ADDR16_LO_DS
:
5854 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5855 && rel
->r_addend
== 0)
5857 /* We may need a .plt entry if this reloc refers to a
5858 function in a shared lib. */
5859 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5861 h
->pointer_equality_needed
= 1;
5868 case R_PPC64_ADDR32
:
5869 case R_PPC64_UADDR16
:
5870 case R_PPC64_UADDR32
:
5871 case R_PPC64_UADDR64
:
5873 if (h
!= NULL
&& !bfd_link_pic (info
))
5874 /* We may need a copy reloc. */
5877 /* Don't propagate .opd relocs. */
5878 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5881 /* If we are creating a shared library, and this is a reloc
5882 against a global symbol, or a non PC relative reloc
5883 against a local symbol, then we need to copy the reloc
5884 into the shared library. However, if we are linking with
5885 -Bsymbolic, we do not need to copy a reloc against a
5886 global symbol which is defined in an object we are
5887 including in the link (i.e., DEF_REGULAR is set). At
5888 this point we have not seen all the input files, so it is
5889 possible that DEF_REGULAR is not set now but will be set
5890 later (it is never cleared). In case of a weak definition,
5891 DEF_REGULAR may be cleared later by a strong definition in
5892 a shared library. We account for that possibility below by
5893 storing information in the dyn_relocs field of the hash
5894 table entry. A similar situation occurs when creating
5895 shared libraries and symbol visibility changes render the
5898 If on the other hand, we are creating an executable, we
5899 may need to keep relocations for symbols satisfied by a
5900 dynamic library if we manage to avoid copy relocs for the
5903 if ((bfd_link_pic (info
)
5904 && (must_be_dyn_reloc (info
, r_type
)
5906 && (!SYMBOLIC_BIND (info
, h
)
5907 || h
->root
.type
== bfd_link_hash_defweak
5908 || !h
->def_regular
))))
5909 || (ELIMINATE_COPY_RELOCS
5910 && !bfd_link_pic (info
)
5912 && (h
->root
.type
== bfd_link_hash_defweak
5913 || !h
->def_regular
))
5914 || (!bfd_link_pic (info
)
5917 /* We must copy these reloc types into the output file.
5918 Create a reloc section in dynobj and make room for
5922 sreloc
= _bfd_elf_make_dynamic_reloc_section
5923 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5929 /* If this is a global symbol, we count the number of
5930 relocations we need for this symbol. */
5933 struct elf_dyn_relocs
*p
;
5934 struct elf_dyn_relocs
**head
;
5936 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5938 if (p
== NULL
|| p
->sec
!= sec
)
5940 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5950 if (!must_be_dyn_reloc (info
, r_type
))
5955 /* Track dynamic relocs needed for local syms too.
5956 We really need local syms available to do this
5958 struct ppc_dyn_relocs
*p
;
5959 struct ppc_dyn_relocs
**head
;
5960 bfd_boolean is_ifunc
;
5963 Elf_Internal_Sym
*isym
;
5965 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5970 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5974 vpp
= &elf_section_data (s
)->local_dynrel
;
5975 head
= (struct ppc_dyn_relocs
**) vpp
;
5976 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5978 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5980 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5982 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5988 p
->ifunc
= is_ifunc
;
6004 /* Merge backend specific data from an object file to the output
6005 object file when linking. */
6008 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6010 bfd
*obfd
= info
->output_bfd
;
6011 unsigned long iflags
, oflags
;
6013 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6016 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6019 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6022 iflags
= elf_elfheader (ibfd
)->e_flags
;
6023 oflags
= elf_elfheader (obfd
)->e_flags
;
6025 if (iflags
& ~EF_PPC64_ABI
)
6028 /* xgettext:c-format */
6029 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6030 bfd_set_error (bfd_error_bad_value
);
6033 else if (iflags
!= oflags
&& iflags
!= 0)
6036 /* xgettext:c-format */
6037 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6038 ibfd
, iflags
, oflags
);
6039 bfd_set_error (bfd_error_bad_value
);
6043 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6045 /* Merge Tag_compatibility attributes and any common GNU ones. */
6046 _bfd_elf_merge_object_attributes (ibfd
, info
);
6052 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6054 /* Print normal ELF private data. */
6055 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6057 if (elf_elfheader (abfd
)->e_flags
!= 0)
6061 fprintf (file
, _("private flags = 0x%lx:"),
6062 elf_elfheader (abfd
)->e_flags
);
6064 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6065 fprintf (file
, _(" [abiv%ld]"),
6066 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6073 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6074 of the code entry point, and its section, which must be in the same
6075 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6078 opd_entry_value (asection
*opd_sec
,
6080 asection
**code_sec
,
6082 bfd_boolean in_code_sec
)
6084 bfd
*opd_bfd
= opd_sec
->owner
;
6085 Elf_Internal_Rela
*relocs
;
6086 Elf_Internal_Rela
*lo
, *hi
, *look
;
6089 /* No relocs implies we are linking a --just-symbols object, or looking
6090 at a final linked executable with addr2line or somesuch. */
6091 if (opd_sec
->reloc_count
== 0)
6093 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6095 if (contents
== NULL
)
6097 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6098 return (bfd_vma
) -1;
6099 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6102 /* PR 17512: file: 64b9dfbb. */
6103 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6104 return (bfd_vma
) -1;
6106 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6107 if (code_sec
!= NULL
)
6109 asection
*sec
, *likely
= NULL
;
6115 && val
< sec
->vma
+ sec
->size
)
6121 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6123 && (sec
->flags
& SEC_LOAD
) != 0
6124 && (sec
->flags
& SEC_ALLOC
) != 0)
6129 if (code_off
!= NULL
)
6130 *code_off
= val
- likely
->vma
;
6136 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6138 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6140 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6141 /* PR 17512: file: df8e1fd6. */
6143 return (bfd_vma
) -1;
6145 /* Go find the opd reloc at the sym address. */
6147 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6151 look
= lo
+ (hi
- lo
) / 2;
6152 if (look
->r_offset
< offset
)
6154 else if (look
->r_offset
> offset
)
6158 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6160 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6161 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6163 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6164 asection
*sec
= NULL
;
6166 if (symndx
>= symtab_hdr
->sh_info
6167 && elf_sym_hashes (opd_bfd
) != NULL
)
6169 struct elf_link_hash_entry
**sym_hashes
;
6170 struct elf_link_hash_entry
*rh
;
6172 sym_hashes
= elf_sym_hashes (opd_bfd
);
6173 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6176 rh
= elf_follow_link (rh
);
6177 if (rh
->root
.type
!= bfd_link_hash_defined
6178 && rh
->root
.type
!= bfd_link_hash_defweak
)
6180 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6182 val
= rh
->root
.u
.def
.value
;
6183 sec
= rh
->root
.u
.def
.section
;
6190 Elf_Internal_Sym
*sym
;
6192 if (symndx
< symtab_hdr
->sh_info
)
6194 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6197 size_t symcnt
= symtab_hdr
->sh_info
;
6198 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6203 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6209 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6215 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6218 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6219 val
= sym
->st_value
;
6222 val
+= look
->r_addend
;
6223 if (code_off
!= NULL
)
6225 if (code_sec
!= NULL
)
6227 if (in_code_sec
&& *code_sec
!= sec
)
6232 if (sec
->output_section
!= NULL
)
6233 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6242 /* If the ELF symbol SYM might be a function in SEC, return the
6243 function size and set *CODE_OFF to the function's entry point,
6244 otherwise return zero. */
6246 static bfd_size_type
6247 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6252 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6253 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6257 if (!(sym
->flags
& BSF_SYNTHETIC
))
6258 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6260 if (strcmp (sym
->section
->name
, ".opd") == 0)
6262 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6263 bfd_vma symval
= sym
->value
;
6266 && opd
->adjust
!= NULL
6267 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6269 /* opd_entry_value will use cached relocs that have been
6270 adjusted, but with raw symbols. That means both local
6271 and global symbols need adjusting. */
6272 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6278 if (opd_entry_value (sym
->section
, symval
,
6279 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6281 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6282 symbol. This size has nothing to do with the code size of the
6283 function, which is what we're supposed to return, but the
6284 code size isn't available without looking up the dot-sym.
6285 However, doing that would be a waste of time particularly
6286 since elf_find_function will look at the dot-sym anyway.
6287 Now, elf_find_function will keep the largest size of any
6288 function sym found at the code address of interest, so return
6289 1 here to avoid it incorrectly caching a larger function size
6290 for a small function. This does mean we return the wrong
6291 size for a new-ABI function of size 24, but all that does is
6292 disable caching for such functions. */
6298 if (sym
->section
!= sec
)
6300 *code_off
= sym
->value
;
6307 /* Return true if symbol is defined in a regular object file. */
6310 is_static_defined (struct elf_link_hash_entry
*h
)
6312 return ((h
->root
.type
== bfd_link_hash_defined
6313 || h
->root
.type
== bfd_link_hash_defweak
)
6314 && h
->root
.u
.def
.section
!= NULL
6315 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6318 /* If FDH is a function descriptor symbol, return the associated code
6319 entry symbol if it is defined. Return NULL otherwise. */
6321 static struct ppc_link_hash_entry
*
6322 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6324 if (fdh
->is_func_descriptor
)
6326 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6327 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6328 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6334 /* If FH is a function code entry symbol, return the associated
6335 function descriptor symbol if it is defined. Return NULL otherwise. */
6337 static struct ppc_link_hash_entry
*
6338 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6341 && fh
->oh
->is_func_descriptor
)
6343 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6344 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6345 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6351 /* Mark all our entry sym sections, both opd and code section. */
6354 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6356 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6357 struct bfd_sym_chain
*sym
;
6362 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6364 struct ppc_link_hash_entry
*eh
, *fh
;
6367 eh
= (struct ppc_link_hash_entry
*)
6368 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6371 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6372 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6375 fh
= defined_code_entry (eh
);
6378 sec
= fh
->elf
.root
.u
.def
.section
;
6379 sec
->flags
|= SEC_KEEP
;
6381 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6382 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6383 eh
->elf
.root
.u
.def
.value
,
6384 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6385 sec
->flags
|= SEC_KEEP
;
6387 sec
= eh
->elf
.root
.u
.def
.section
;
6388 sec
->flags
|= SEC_KEEP
;
6392 /* Mark sections containing dynamically referenced symbols. When
6393 building shared libraries, we must assume that any visible symbol is
6397 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6399 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6400 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6401 struct ppc_link_hash_entry
*fdh
;
6402 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6404 /* Dynamic linking info is on the func descriptor sym. */
6405 fdh
= defined_func_desc (eh
);
6409 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6410 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6411 && (eh
->elf
.ref_dynamic
6412 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6413 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6414 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6415 && (!bfd_link_executable (info
)
6416 || info
->export_dynamic
6419 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6420 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6421 || !bfd_hide_sym_by_version (info
->version_info
,
6422 eh
->elf
.root
.root
.string
)))))
6425 struct ppc_link_hash_entry
*fh
;
6427 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6429 /* Function descriptor syms cause the associated
6430 function code sym section to be marked. */
6431 fh
= defined_code_entry (eh
);
6434 code_sec
= fh
->elf
.root
.u
.def
.section
;
6435 code_sec
->flags
|= SEC_KEEP
;
6437 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6438 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6439 eh
->elf
.root
.u
.def
.value
,
6440 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6441 code_sec
->flags
|= SEC_KEEP
;
6447 /* Return the section that should be marked against GC for a given
6451 ppc64_elf_gc_mark_hook (asection
*sec
,
6452 struct bfd_link_info
*info
,
6453 Elf_Internal_Rela
*rel
,
6454 struct elf_link_hash_entry
*h
,
6455 Elf_Internal_Sym
*sym
)
6459 /* Syms return NULL if we're marking .opd, so we avoid marking all
6460 function sections, as all functions are referenced in .opd. */
6462 if (get_opd_info (sec
) != NULL
)
6467 enum elf_ppc64_reloc_type r_type
;
6468 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6470 r_type
= ELF64_R_TYPE (rel
->r_info
);
6473 case R_PPC64_GNU_VTINHERIT
:
6474 case R_PPC64_GNU_VTENTRY
:
6478 switch (h
->root
.type
)
6480 case bfd_link_hash_defined
:
6481 case bfd_link_hash_defweak
:
6482 eh
= (struct ppc_link_hash_entry
*) h
;
6483 fdh
= defined_func_desc (eh
);
6487 /* Function descriptor syms cause the associated
6488 function code sym section to be marked. */
6489 fh
= defined_code_entry (eh
);
6492 /* They also mark their opd section. */
6493 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6495 rsec
= fh
->elf
.root
.u
.def
.section
;
6497 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6498 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6499 eh
->elf
.root
.u
.def
.value
,
6500 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6501 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6503 rsec
= h
->root
.u
.def
.section
;
6506 case bfd_link_hash_common
:
6507 rsec
= h
->root
.u
.c
.p
->section
;
6511 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6517 struct _opd_sec_data
*opd
;
6519 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6520 opd
= get_opd_info (rsec
);
6521 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6525 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6532 /* Update the .got, .plt. and dynamic reloc reference counts for the
6533 section being removed. */
6536 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6537 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6539 struct ppc_link_hash_table
*htab
;
6540 Elf_Internal_Shdr
*symtab_hdr
;
6541 struct elf_link_hash_entry
**sym_hashes
;
6542 struct got_entry
**local_got_ents
;
6543 const Elf_Internal_Rela
*rel
, *relend
;
6545 if (bfd_link_relocatable (info
))
6548 if ((sec
->flags
& SEC_ALLOC
) == 0)
6551 elf_section_data (sec
)->local_dynrel
= NULL
;
6553 htab
= ppc_hash_table (info
);
6557 symtab_hdr
= &elf_symtab_hdr (abfd
);
6558 sym_hashes
= elf_sym_hashes (abfd
);
6559 local_got_ents
= elf_local_got_ents (abfd
);
6561 relend
= relocs
+ sec
->reloc_count
;
6562 for (rel
= relocs
; rel
< relend
; rel
++)
6564 unsigned long r_symndx
;
6565 enum elf_ppc64_reloc_type r_type
;
6566 struct elf_link_hash_entry
*h
= NULL
;
6567 struct plt_entry
**plt_list
;
6568 unsigned char tls_type
= 0;
6570 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6571 r_type
= ELF64_R_TYPE (rel
->r_info
);
6572 if (r_symndx
>= symtab_hdr
->sh_info
)
6574 struct ppc_link_hash_entry
*eh
;
6575 struct elf_dyn_relocs
**pp
;
6576 struct elf_dyn_relocs
*p
;
6578 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6579 h
= elf_follow_link (h
);
6580 eh
= (struct ppc_link_hash_entry
*) h
;
6582 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6585 /* Everything must go for SEC. */
6593 case R_PPC64_GOT_TLSLD16
:
6594 case R_PPC64_GOT_TLSLD16_LO
:
6595 case R_PPC64_GOT_TLSLD16_HI
:
6596 case R_PPC64_GOT_TLSLD16_HA
:
6597 tls_type
= TLS_TLS
| TLS_LD
;
6600 case R_PPC64_GOT_TLSGD16
:
6601 case R_PPC64_GOT_TLSGD16_LO
:
6602 case R_PPC64_GOT_TLSGD16_HI
:
6603 case R_PPC64_GOT_TLSGD16_HA
:
6604 tls_type
= TLS_TLS
| TLS_GD
;
6607 case R_PPC64_GOT_TPREL16_DS
:
6608 case R_PPC64_GOT_TPREL16_LO_DS
:
6609 case R_PPC64_GOT_TPREL16_HI
:
6610 case R_PPC64_GOT_TPREL16_HA
:
6611 tls_type
= TLS_TLS
| TLS_TPREL
;
6614 case R_PPC64_GOT_DTPREL16_DS
:
6615 case R_PPC64_GOT_DTPREL16_LO_DS
:
6616 case R_PPC64_GOT_DTPREL16_HI
:
6617 case R_PPC64_GOT_DTPREL16_HA
:
6618 tls_type
= TLS_TLS
| TLS_DTPREL
;
6622 case R_PPC64_GOT16_DS
:
6623 case R_PPC64_GOT16_HA
:
6624 case R_PPC64_GOT16_HI
:
6625 case R_PPC64_GOT16_LO
:
6626 case R_PPC64_GOT16_LO_DS
:
6629 struct got_entry
*ent
;
6634 ent
= local_got_ents
[r_symndx
];
6636 for (; ent
!= NULL
; ent
= ent
->next
)
6637 if (ent
->addend
== rel
->r_addend
6638 && ent
->owner
== abfd
6639 && ent
->tls_type
== tls_type
)
6643 if (ent
->got
.refcount
> 0)
6644 ent
->got
.refcount
-= 1;
6648 case R_PPC64_PLT16_HA
:
6649 case R_PPC64_PLT16_HI
:
6650 case R_PPC64_PLT16_LO
:
6654 case R_PPC64_REL14_BRNTAKEN
:
6655 case R_PPC64_REL14_BRTAKEN
:
6659 plt_list
= &h
->plt
.plist
;
6660 else if (local_got_ents
!= NULL
)
6662 struct plt_entry
**local_plt
= (struct plt_entry
**)
6663 (local_got_ents
+ symtab_hdr
->sh_info
);
6664 unsigned char *local_got_tls_masks
= (unsigned char *)
6665 (local_plt
+ symtab_hdr
->sh_info
);
6666 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6667 plt_list
= local_plt
+ r_symndx
;
6671 struct plt_entry
*ent
;
6673 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6674 if (ent
->addend
== rel
->r_addend
)
6676 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6677 ent
->plt
.refcount
-= 1;
6688 /* The maximum size of .sfpr. */
6689 #define SFPR_MAX (218*4)
6691 struct sfpr_def_parms
6693 const char name
[12];
6694 unsigned char lo
, hi
;
6695 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6696 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6699 /* Auto-generate _save*, _rest* functions in .sfpr.
6700 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6704 sfpr_define (struct bfd_link_info
*info
,
6705 const struct sfpr_def_parms
*parm
,
6708 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6710 size_t len
= strlen (parm
->name
);
6711 bfd_boolean writing
= FALSE
;
6717 memcpy (sym
, parm
->name
, len
);
6720 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6722 struct ppc_link_hash_entry
*h
;
6724 sym
[len
+ 0] = i
/ 10 + '0';
6725 sym
[len
+ 1] = i
% 10 + '0';
6726 h
= (struct ppc_link_hash_entry
*)
6727 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6728 if (stub_sec
!= NULL
)
6731 && h
->elf
.root
.type
== bfd_link_hash_defined
6732 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6734 struct elf_link_hash_entry
*s
;
6736 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6737 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6740 if (s
->root
.type
== bfd_link_hash_new
6741 || (s
->root
.type
= bfd_link_hash_defined
6742 && s
->root
.u
.def
.section
== stub_sec
))
6744 s
->root
.type
= bfd_link_hash_defined
;
6745 s
->root
.u
.def
.section
= stub_sec
;
6746 s
->root
.u
.def
.value
= (stub_sec
->size
6747 + h
->elf
.root
.u
.def
.value
);
6750 s
->ref_regular_nonweak
= 1;
6751 s
->forced_local
= 1;
6753 s
->root
.linker_def
= 1;
6761 if (!h
->elf
.def_regular
)
6763 h
->elf
.root
.type
= bfd_link_hash_defined
;
6764 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6765 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6766 h
->elf
.type
= STT_FUNC
;
6767 h
->elf
.def_regular
= 1;
6769 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6771 if (htab
->sfpr
->contents
== NULL
)
6773 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6774 if (htab
->sfpr
->contents
== NULL
)
6781 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6783 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6785 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6786 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6794 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6796 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6801 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6803 p
= savegpr0 (abfd
, p
, r
);
6804 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6806 bfd_put_32 (abfd
, BLR
, p
);
6811 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6813 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6818 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6820 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6822 p
= restgpr0 (abfd
, p
, r
);
6823 bfd_put_32 (abfd
, MTLR_R0
, p
);
6827 p
= restgpr0 (abfd
, p
, 30);
6828 p
= restgpr0 (abfd
, p
, 31);
6830 bfd_put_32 (abfd
, BLR
, p
);
6835 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6837 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6842 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6844 p
= savegpr1 (abfd
, p
, r
);
6845 bfd_put_32 (abfd
, BLR
, p
);
6850 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6852 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6857 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6859 p
= restgpr1 (abfd
, p
, r
);
6860 bfd_put_32 (abfd
, BLR
, p
);
6865 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6867 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6872 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6874 p
= savefpr (abfd
, p
, r
);
6875 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6877 bfd_put_32 (abfd
, BLR
, p
);
6882 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6884 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6889 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6891 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6893 p
= restfpr (abfd
, p
, r
);
6894 bfd_put_32 (abfd
, MTLR_R0
, p
);
6898 p
= restfpr (abfd
, p
, 30);
6899 p
= restfpr (abfd
, p
, 31);
6901 bfd_put_32 (abfd
, BLR
, p
);
6906 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6908 p
= savefpr (abfd
, p
, r
);
6909 bfd_put_32 (abfd
, BLR
, p
);
6914 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6916 p
= restfpr (abfd
, p
, r
);
6917 bfd_put_32 (abfd
, BLR
, p
);
6922 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6924 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6926 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6931 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6933 p
= savevr (abfd
, p
, r
);
6934 bfd_put_32 (abfd
, BLR
, p
);
6939 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6941 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6943 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6948 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6950 p
= restvr (abfd
, p
, r
);
6951 bfd_put_32 (abfd
, BLR
, p
);
6955 /* Called via elf_link_hash_traverse to transfer dynamic linking
6956 information on function code symbol entries to their corresponding
6957 function descriptor symbol entries. */
6960 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6962 struct bfd_link_info
*info
;
6963 struct ppc_link_hash_table
*htab
;
6964 struct plt_entry
*ent
;
6965 struct ppc_link_hash_entry
*fh
;
6966 struct ppc_link_hash_entry
*fdh
;
6967 bfd_boolean force_local
;
6969 fh
= (struct ppc_link_hash_entry
*) h
;
6970 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6974 htab
= ppc_hash_table (info
);
6978 /* Resolve undefined references to dot-symbols as the value
6979 in the function descriptor, if we have one in a regular object.
6980 This is to satisfy cases like ".quad .foo". Calls to functions
6981 in dynamic objects are handled elsewhere. */
6982 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6983 && fh
->was_undefined
6984 && (fdh
= defined_func_desc (fh
)) != NULL
6985 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6986 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6987 fdh
->elf
.root
.u
.def
.value
,
6988 &fh
->elf
.root
.u
.def
.section
,
6989 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6991 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6992 fh
->elf
.forced_local
= 1;
6993 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6994 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6997 /* If this is a function code symbol, transfer dynamic linking
6998 information to the function descriptor symbol. */
7002 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7003 if (ent
->plt
.refcount
> 0)
7006 || fh
->elf
.root
.root
.string
[0] != '.'
7007 || fh
->elf
.root
.root
.string
[1] == '\0')
7010 /* Find the corresponding function descriptor symbol. Create it
7011 as undefined if necessary. */
7013 fdh
= lookup_fdh (fh
, htab
);
7015 && !bfd_link_executable (info
)
7016 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7017 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7019 fdh
= make_fdh (info
, fh
);
7024 /* Fake function descriptors are made undefweak. If the function
7025 code symbol is strong undefined, make the fake sym the same.
7026 If the function code symbol is defined, then force the fake
7027 descriptor local; We can't support overriding of symbols in a
7028 shared library on a fake descriptor. */
7032 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7034 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
7036 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
7037 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
7039 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
7040 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
7042 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7047 && !fdh
->elf
.forced_local
7048 && (!bfd_link_executable (info
)
7049 || fdh
->elf
.def_dynamic
7050 || fdh
->elf
.ref_dynamic
7051 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
7052 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
7054 if (fdh
->elf
.dynindx
== -1)
7055 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7057 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7058 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7059 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7060 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7061 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
7063 move_plt_plist (fh
, fdh
);
7064 fdh
->elf
.needs_plt
= 1;
7066 fdh
->is_func_descriptor
= 1;
7071 /* Now that the info is on the function descriptor, clear the
7072 function code sym info. Any function code syms for which we
7073 don't have a definition in a regular file, we force local.
7074 This prevents a shared library from exporting syms that have
7075 been imported from another library. Function code syms that
7076 are really in the library we must leave global to prevent the
7077 linker dragging in a definition from a static library. */
7078 force_local
= (!fh
->elf
.def_regular
7080 || !fdh
->elf
.def_regular
7081 || fdh
->elf
.forced_local
);
7082 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7087 static const struct sfpr_def_parms save_res_funcs
[] =
7089 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7090 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7091 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7092 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7093 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7094 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7095 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7096 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7097 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7098 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7099 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7100 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7103 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7104 this hook to a) provide some gcc support functions, and b) transfer
7105 dynamic linking information gathered so far on function code symbol
7106 entries, to their corresponding function descriptor symbol entries. */
7109 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7110 struct bfd_link_info
*info
)
7112 struct ppc_link_hash_table
*htab
;
7114 htab
= ppc_hash_table (info
);
7118 /* Provide any missing _save* and _rest* functions. */
7119 if (htab
->sfpr
!= NULL
)
7123 htab
->sfpr
->size
= 0;
7124 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7125 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7127 if (htab
->sfpr
->size
== 0)
7128 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7131 if (bfd_link_relocatable (info
))
7134 if (htab
->elf
.hgot
!= NULL
)
7136 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7137 /* Make .TOC. defined so as to prevent it being made dynamic.
7138 The wrong value here is fixed later in ppc64_elf_set_toc. */
7139 if (!htab
->elf
.hgot
->def_regular
7140 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7142 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7143 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7144 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7145 htab
->elf
.hgot
->def_regular
= 1;
7146 htab
->elf
.hgot
->root
.linker_def
= 1;
7148 htab
->elf
.hgot
->type
= STT_OBJECT
;
7149 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7153 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7158 /* Return true if we have dynamic relocs against H that apply to
7159 read-only sections. */
7162 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7164 struct ppc_link_hash_entry
*eh
;
7165 struct elf_dyn_relocs
*p
;
7167 eh
= (struct ppc_link_hash_entry
*) h
;
7168 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7170 asection
*s
= p
->sec
->output_section
;
7172 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7178 /* Return true if we have dynamic relocs against H or any of its weak
7179 aliases, that apply to read-only sections. */
7182 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7184 struct ppc_link_hash_entry
*eh
;
7186 eh
= (struct ppc_link_hash_entry
*) h
;
7189 if (readonly_dynrelocs (&eh
->elf
))
7192 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7197 /* Return whether EH has pc-relative dynamic relocs. */
7200 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7202 struct elf_dyn_relocs
*p
;
7204 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7205 if (p
->pc_count
!= 0)
7210 /* Return true if a global entry stub will be created for H. Valid
7211 for ELFv2 before plt entries have been allocated. */
7214 global_entry_stub (struct elf_link_hash_entry
*h
)
7216 struct plt_entry
*pent
;
7218 if (!h
->pointer_equality_needed
7222 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7223 if (pent
->plt
.refcount
> 0
7224 && pent
->addend
== 0)
7230 /* Adjust a symbol defined by a dynamic object and referenced by a
7231 regular object. The current definition is in some section of the
7232 dynamic object, but we're not including those sections. We have to
7233 change the definition to something the rest of the link can
7237 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7238 struct elf_link_hash_entry
*h
)
7240 struct ppc_link_hash_table
*htab
;
7243 htab
= ppc_hash_table (info
);
7247 /* Deal with function syms. */
7248 if (h
->type
== STT_FUNC
7249 || h
->type
== STT_GNU_IFUNC
7252 /* Clear procedure linkage table information for any symbol that
7253 won't need a .plt entry. */
7254 struct plt_entry
*ent
;
7255 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7256 if (ent
->plt
.refcount
> 0)
7259 || (h
->type
!= STT_GNU_IFUNC
7260 && (SYMBOL_CALLS_LOCAL (info
, h
)
7261 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7262 && h
->root
.type
== bfd_link_hash_undefweak
)))
7263 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7265 h
->plt
.plist
= NULL
;
7267 h
->pointer_equality_needed
= 0;
7269 else if (abiversion (info
->output_bfd
) >= 2)
7271 /* Taking a function's address in a read/write section
7272 doesn't require us to define the function symbol in the
7273 executable on a global entry stub. A dynamic reloc can
7274 be used instead. The reason we prefer a few more dynamic
7275 relocs is that calling via a global entry stub costs a
7276 few more instructions, and pointer_equality_needed causes
7277 extra work in ld.so when resolving these symbols. */
7278 if (global_entry_stub (h
)
7279 && !alias_readonly_dynrelocs (h
))
7281 h
->pointer_equality_needed
= 0;
7282 /* After adjust_dynamic_symbol, non_got_ref set in
7283 the non-pic case means that dyn_relocs for this
7284 symbol should be discarded. */
7288 /* If making a plt entry, then we don't need copy relocs. */
7293 h
->plt
.plist
= NULL
;
7295 /* If this is a weak symbol, and there is a real definition, the
7296 processor independent code will have arranged for us to see the
7297 real definition first, and we can just use the same value. */
7298 if (h
->u
.weakdef
!= NULL
)
7300 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7301 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7302 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7303 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7304 if (ELIMINATE_COPY_RELOCS
)
7305 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7309 /* If we are creating a shared library, we must presume that the
7310 only references to the symbol are via the global offset table.
7311 For such cases we need not do anything here; the relocations will
7312 be handled correctly by relocate_section. */
7313 if (bfd_link_pic (info
))
7316 /* If there are no references to this symbol that do not use the
7317 GOT, we don't need to generate a copy reloc. */
7318 if (!h
->non_got_ref
)
7321 /* Don't generate a copy reloc for symbols defined in the executable. */
7322 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7324 /* If -z nocopyreloc was given, don't generate them either. */
7325 || info
->nocopyreloc
7327 /* If we didn't find any dynamic relocs in read-only sections, then
7328 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7329 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7331 /* Protected variables do not work with .dynbss. The copy in
7332 .dynbss won't be used by the shared library with the protected
7333 definition for the variable. Text relocations are preferable
7334 to an incorrect program. */
7335 || h
->protected_def
)
7341 if (h
->plt
.plist
!= NULL
)
7343 /* We should never get here, but unfortunately there are versions
7344 of gcc out there that improperly (for this ABI) put initialized
7345 function pointers, vtable refs and suchlike in read-only
7346 sections. Allow them to proceed, but warn that this might
7347 break at runtime. */
7348 info
->callbacks
->einfo
7349 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7350 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7351 h
->root
.root
.string
);
7354 /* This is a reference to a symbol defined by a dynamic object which
7355 is not a function. */
7357 /* We must allocate the symbol in our .dynbss section, which will
7358 become part of the .bss section of the executable. There will be
7359 an entry for this symbol in the .dynsym section. The dynamic
7360 object will contain position independent code, so all references
7361 from the dynamic object to this symbol will go through the global
7362 offset table. The dynamic linker will use the .dynsym entry to
7363 determine the address it must put in the global offset table, so
7364 both the dynamic object and the regular object will refer to the
7365 same memory location for the variable. */
7367 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7368 to copy the initial value out of the dynamic object and into the
7369 runtime process image. We need to remember the offset into the
7370 .rela.bss section we are going to use. */
7371 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7373 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7379 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7382 /* If given a function descriptor symbol, hide both the function code
7383 sym and the descriptor. */
7385 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7386 struct elf_link_hash_entry
*h
,
7387 bfd_boolean force_local
)
7389 struct ppc_link_hash_entry
*eh
;
7390 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7392 eh
= (struct ppc_link_hash_entry
*) h
;
7393 if (eh
->is_func_descriptor
)
7395 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7400 struct ppc_link_hash_table
*htab
;
7403 /* We aren't supposed to use alloca in BFD because on
7404 systems which do not have alloca the version in libiberty
7405 calls xmalloc, which might cause the program to crash
7406 when it runs out of memory. This function doesn't have a
7407 return status, so there's no way to gracefully return an
7408 error. So cheat. We know that string[-1] can be safely
7409 accessed; It's either a string in an ELF string table,
7410 or allocated in an objalloc structure. */
7412 p
= eh
->elf
.root
.root
.string
- 1;
7415 htab
= ppc_hash_table (info
);
7419 fh
= (struct ppc_link_hash_entry
*)
7420 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7423 /* Unfortunately, if it so happens that the string we were
7424 looking for was allocated immediately before this string,
7425 then we overwrote the string terminator. That's the only
7426 reason the lookup should fail. */
7429 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7430 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7432 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7433 fh
= (struct ppc_link_hash_entry
*)
7434 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7443 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7448 get_sym_h (struct elf_link_hash_entry
**hp
,
7449 Elf_Internal_Sym
**symp
,
7451 unsigned char **tls_maskp
,
7452 Elf_Internal_Sym
**locsymsp
,
7453 unsigned long r_symndx
,
7456 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7458 if (r_symndx
>= symtab_hdr
->sh_info
)
7460 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7461 struct elf_link_hash_entry
*h
;
7463 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7464 h
= elf_follow_link (h
);
7472 if (symsecp
!= NULL
)
7474 asection
*symsec
= NULL
;
7475 if (h
->root
.type
== bfd_link_hash_defined
7476 || h
->root
.type
== bfd_link_hash_defweak
)
7477 symsec
= h
->root
.u
.def
.section
;
7481 if (tls_maskp
!= NULL
)
7483 struct ppc_link_hash_entry
*eh
;
7485 eh
= (struct ppc_link_hash_entry
*) h
;
7486 *tls_maskp
= &eh
->tls_mask
;
7491 Elf_Internal_Sym
*sym
;
7492 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7494 if (locsyms
== NULL
)
7496 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7497 if (locsyms
== NULL
)
7498 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7499 symtab_hdr
->sh_info
,
7500 0, NULL
, NULL
, NULL
);
7501 if (locsyms
== NULL
)
7503 *locsymsp
= locsyms
;
7505 sym
= locsyms
+ r_symndx
;
7513 if (symsecp
!= NULL
)
7514 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7516 if (tls_maskp
!= NULL
)
7518 struct got_entry
**lgot_ents
;
7519 unsigned char *tls_mask
;
7522 lgot_ents
= elf_local_got_ents (ibfd
);
7523 if (lgot_ents
!= NULL
)
7525 struct plt_entry
**local_plt
= (struct plt_entry
**)
7526 (lgot_ents
+ symtab_hdr
->sh_info
);
7527 unsigned char *lgot_masks
= (unsigned char *)
7528 (local_plt
+ symtab_hdr
->sh_info
);
7529 tls_mask
= &lgot_masks
[r_symndx
];
7531 *tls_maskp
= tls_mask
;
7537 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7538 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7539 type suitable for optimization, and 1 otherwise. */
7542 get_tls_mask (unsigned char **tls_maskp
,
7543 unsigned long *toc_symndx
,
7544 bfd_vma
*toc_addend
,
7545 Elf_Internal_Sym
**locsymsp
,
7546 const Elf_Internal_Rela
*rel
,
7549 unsigned long r_symndx
;
7551 struct elf_link_hash_entry
*h
;
7552 Elf_Internal_Sym
*sym
;
7556 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7557 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7560 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7562 || ppc64_elf_section_data (sec
) == NULL
7563 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7566 /* Look inside a TOC section too. */
7569 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7570 off
= h
->root
.u
.def
.value
;
7573 off
= sym
->st_value
;
7574 off
+= rel
->r_addend
;
7575 BFD_ASSERT (off
% 8 == 0);
7576 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7577 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7578 if (toc_symndx
!= NULL
)
7579 *toc_symndx
= r_symndx
;
7580 if (toc_addend
!= NULL
)
7581 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7582 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7584 if ((h
== NULL
|| is_static_defined (h
))
7585 && (next_r
== -1 || next_r
== -2))
7590 /* Find (or create) an entry in the tocsave hash table. */
7592 static struct tocsave_entry
*
7593 tocsave_find (struct ppc_link_hash_table
*htab
,
7594 enum insert_option insert
,
7595 Elf_Internal_Sym
**local_syms
,
7596 const Elf_Internal_Rela
*irela
,
7599 unsigned long r_indx
;
7600 struct elf_link_hash_entry
*h
;
7601 Elf_Internal_Sym
*sym
;
7602 struct tocsave_entry ent
, *p
;
7604 struct tocsave_entry
**slot
;
7606 r_indx
= ELF64_R_SYM (irela
->r_info
);
7607 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7609 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7612 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7617 ent
.offset
= h
->root
.u
.def
.value
;
7619 ent
.offset
= sym
->st_value
;
7620 ent
.offset
+= irela
->r_addend
;
7622 hash
= tocsave_htab_hash (&ent
);
7623 slot
= ((struct tocsave_entry
**)
7624 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7630 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7639 /* Adjust all global syms defined in opd sections. In gcc generated
7640 code for the old ABI, these will already have been done. */
7643 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7645 struct ppc_link_hash_entry
*eh
;
7647 struct _opd_sec_data
*opd
;
7649 if (h
->root
.type
== bfd_link_hash_indirect
)
7652 if (h
->root
.type
!= bfd_link_hash_defined
7653 && h
->root
.type
!= bfd_link_hash_defweak
)
7656 eh
= (struct ppc_link_hash_entry
*) h
;
7657 if (eh
->adjust_done
)
7660 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7661 opd
= get_opd_info (sym_sec
);
7662 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7664 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7667 /* This entry has been deleted. */
7668 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7671 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7672 if (discarded_section (dsec
))
7674 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7678 eh
->elf
.root
.u
.def
.value
= 0;
7679 eh
->elf
.root
.u
.def
.section
= dsec
;
7682 eh
->elf
.root
.u
.def
.value
+= adjust
;
7683 eh
->adjust_done
= 1;
7688 /* Handles decrementing dynamic reloc counts for the reloc specified by
7689 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7690 have already been determined. */
7693 dec_dynrel_count (bfd_vma r_info
,
7695 struct bfd_link_info
*info
,
7696 Elf_Internal_Sym
**local_syms
,
7697 struct elf_link_hash_entry
*h
,
7698 Elf_Internal_Sym
*sym
)
7700 enum elf_ppc64_reloc_type r_type
;
7701 asection
*sym_sec
= NULL
;
7703 /* Can this reloc be dynamic? This switch, and later tests here
7704 should be kept in sync with the code in check_relocs. */
7705 r_type
= ELF64_R_TYPE (r_info
);
7711 case R_PPC64_TPREL16
:
7712 case R_PPC64_TPREL16_LO
:
7713 case R_PPC64_TPREL16_HI
:
7714 case R_PPC64_TPREL16_HA
:
7715 case R_PPC64_TPREL16_DS
:
7716 case R_PPC64_TPREL16_LO_DS
:
7717 case R_PPC64_TPREL16_HIGH
:
7718 case R_PPC64_TPREL16_HIGHA
:
7719 case R_PPC64_TPREL16_HIGHER
:
7720 case R_PPC64_TPREL16_HIGHERA
:
7721 case R_PPC64_TPREL16_HIGHEST
:
7722 case R_PPC64_TPREL16_HIGHESTA
:
7723 if (!bfd_link_pic (info
))
7726 case R_PPC64_TPREL64
:
7727 case R_PPC64_DTPMOD64
:
7728 case R_PPC64_DTPREL64
:
7729 case R_PPC64_ADDR64
:
7733 case R_PPC64_ADDR14
:
7734 case R_PPC64_ADDR14_BRNTAKEN
:
7735 case R_PPC64_ADDR14_BRTAKEN
:
7736 case R_PPC64_ADDR16
:
7737 case R_PPC64_ADDR16_DS
:
7738 case R_PPC64_ADDR16_HA
:
7739 case R_PPC64_ADDR16_HI
:
7740 case R_PPC64_ADDR16_HIGH
:
7741 case R_PPC64_ADDR16_HIGHA
:
7742 case R_PPC64_ADDR16_HIGHER
:
7743 case R_PPC64_ADDR16_HIGHERA
:
7744 case R_PPC64_ADDR16_HIGHEST
:
7745 case R_PPC64_ADDR16_HIGHESTA
:
7746 case R_PPC64_ADDR16_LO
:
7747 case R_PPC64_ADDR16_LO_DS
:
7748 case R_PPC64_ADDR24
:
7749 case R_PPC64_ADDR32
:
7750 case R_PPC64_UADDR16
:
7751 case R_PPC64_UADDR32
:
7752 case R_PPC64_UADDR64
:
7757 if (local_syms
!= NULL
)
7759 unsigned long r_symndx
;
7760 bfd
*ibfd
= sec
->owner
;
7762 r_symndx
= ELF64_R_SYM (r_info
);
7763 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7767 if ((bfd_link_pic (info
)
7768 && (must_be_dyn_reloc (info
, r_type
)
7770 && (!SYMBOLIC_BIND (info
, h
)
7771 || h
->root
.type
== bfd_link_hash_defweak
7772 || !h
->def_regular
))))
7773 || (ELIMINATE_COPY_RELOCS
7774 && !bfd_link_pic (info
)
7776 && (h
->root
.type
== bfd_link_hash_defweak
7777 || !h
->def_regular
)))
7784 struct elf_dyn_relocs
*p
;
7785 struct elf_dyn_relocs
**pp
;
7786 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7788 /* elf_gc_sweep may have already removed all dyn relocs associated
7789 with local syms for a given section. Also, symbol flags are
7790 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7791 report a dynreloc miscount. */
7792 if (*pp
== NULL
&& info
->gc_sections
)
7795 while ((p
= *pp
) != NULL
)
7799 if (!must_be_dyn_reloc (info
, r_type
))
7811 struct ppc_dyn_relocs
*p
;
7812 struct ppc_dyn_relocs
**pp
;
7814 bfd_boolean is_ifunc
;
7816 if (local_syms
== NULL
)
7817 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7818 if (sym_sec
== NULL
)
7821 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7822 pp
= (struct ppc_dyn_relocs
**) vpp
;
7824 if (*pp
== NULL
&& info
->gc_sections
)
7827 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7828 while ((p
= *pp
) != NULL
)
7830 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7841 /* xgettext:c-format */
7842 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7844 bfd_set_error (bfd_error_bad_value
);
7848 /* Remove unused Official Procedure Descriptor entries. Currently we
7849 only remove those associated with functions in discarded link-once
7850 sections, or weakly defined functions that have been overridden. It
7851 would be possible to remove many more entries for statically linked
7855 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7858 bfd_boolean some_edited
= FALSE
;
7859 asection
*need_pad
= NULL
;
7860 struct ppc_link_hash_table
*htab
;
7862 htab
= ppc_hash_table (info
);
7866 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7869 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7870 Elf_Internal_Shdr
*symtab_hdr
;
7871 Elf_Internal_Sym
*local_syms
;
7872 struct _opd_sec_data
*opd
;
7873 bfd_boolean need_edit
, add_aux_fields
, broken
;
7874 bfd_size_type cnt_16b
= 0;
7876 if (!is_ppc64_elf (ibfd
))
7879 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7880 if (sec
== NULL
|| sec
->size
== 0)
7883 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7886 if (sec
->output_section
== bfd_abs_section_ptr
)
7889 /* Look through the section relocs. */
7890 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7894 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7896 /* Read the relocations. */
7897 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7899 if (relstart
== NULL
)
7902 /* First run through the relocs to check they are sane, and to
7903 determine whether we need to edit this opd section. */
7907 relend
= relstart
+ sec
->reloc_count
;
7908 for (rel
= relstart
; rel
< relend
; )
7910 enum elf_ppc64_reloc_type r_type
;
7911 unsigned long r_symndx
;
7913 struct elf_link_hash_entry
*h
;
7914 Elf_Internal_Sym
*sym
;
7917 /* .opd contains an array of 16 or 24 byte entries. We're
7918 only interested in the reloc pointing to a function entry
7920 offset
= rel
->r_offset
;
7921 if (rel
+ 1 == relend
7922 || rel
[1].r_offset
!= offset
+ 8)
7924 /* If someone messes with .opd alignment then after a
7925 "ld -r" we might have padding in the middle of .opd.
7926 Also, there's nothing to prevent someone putting
7927 something silly in .opd with the assembler. No .opd
7928 optimization for them! */
7931 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7936 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7937 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7940 /* xgettext:c-format */
7941 (_("%B: unexpected reloc type %u in .opd section"),
7947 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7948 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7952 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7954 const char *sym_name
;
7956 sym_name
= h
->root
.root
.string
;
7958 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7962 /* xgettext:c-format */
7963 (_("%B: undefined sym `%s' in .opd section"),
7969 /* opd entries are always for functions defined in the
7970 current input bfd. If the symbol isn't defined in the
7971 input bfd, then we won't be using the function in this
7972 bfd; It must be defined in a linkonce section in another
7973 bfd, or is weak. It's also possible that we are
7974 discarding the function due to a linker script /DISCARD/,
7975 which we test for via the output_section. */
7976 if (sym_sec
->owner
!= ibfd
7977 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7981 if (rel
+ 1 == relend
7982 || (rel
+ 2 < relend
7983 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7988 if (sec
->size
== offset
+ 24)
7993 if (sec
->size
== offset
+ 16)
8000 else if (rel
+ 1 < relend
8001 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8002 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8004 if (rel
[0].r_offset
== offset
+ 16)
8006 else if (rel
[0].r_offset
!= offset
+ 24)
8013 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8015 if (!broken
&& (need_edit
|| add_aux_fields
))
8017 Elf_Internal_Rela
*write_rel
;
8018 Elf_Internal_Shdr
*rel_hdr
;
8019 bfd_byte
*rptr
, *wptr
;
8020 bfd_byte
*new_contents
;
8023 new_contents
= NULL
;
8024 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8025 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8026 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8027 if (opd
->adjust
== NULL
)
8029 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8031 /* This seems a waste of time as input .opd sections are all
8032 zeros as generated by gcc, but I suppose there's no reason
8033 this will always be so. We might start putting something in
8034 the third word of .opd entries. */
8035 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8038 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8043 if (local_syms
!= NULL
8044 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8046 if (elf_section_data (sec
)->relocs
!= relstart
)
8050 sec
->contents
= loc
;
8051 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8054 elf_section_data (sec
)->relocs
= relstart
;
8056 new_contents
= sec
->contents
;
8059 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8060 if (new_contents
== NULL
)
8064 wptr
= new_contents
;
8065 rptr
= sec
->contents
;
8066 write_rel
= relstart
;
8067 for (rel
= relstart
; rel
< relend
; )
8069 unsigned long r_symndx
;
8071 struct elf_link_hash_entry
*h
;
8072 struct ppc_link_hash_entry
*fdh
= NULL
;
8073 Elf_Internal_Sym
*sym
;
8075 Elf_Internal_Rela
*next_rel
;
8078 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8079 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8084 if (next_rel
+ 1 == relend
8085 || (next_rel
+ 2 < relend
8086 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8089 /* See if the .opd entry is full 24 byte or
8090 16 byte (with fd_aux entry overlapped with next
8093 if (next_rel
== relend
)
8095 if (sec
->size
== rel
->r_offset
+ 16)
8098 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8102 && h
->root
.root
.string
[0] == '.')
8104 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
8106 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
8107 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8111 skip
= (sym_sec
->owner
!= ibfd
8112 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8115 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8117 /* Arrange for the function descriptor sym
8119 fdh
->elf
.root
.u
.def
.value
= 0;
8120 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8122 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8124 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8129 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8133 if (++rel
== next_rel
)
8136 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8137 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8144 /* We'll be keeping this opd entry. */
8149 /* Redefine the function descriptor symbol to
8150 this location in the opd section. It is
8151 necessary to update the value here rather
8152 than using an array of adjustments as we do
8153 for local symbols, because various places
8154 in the generic ELF code use the value
8155 stored in u.def.value. */
8156 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8157 fdh
->adjust_done
= 1;
8160 /* Local syms are a bit tricky. We could
8161 tweak them as they can be cached, but
8162 we'd need to look through the local syms
8163 for the function descriptor sym which we
8164 don't have at the moment. So keep an
8165 array of adjustments. */
8166 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8167 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8170 memcpy (wptr
, rptr
, opd_ent_size
);
8171 wptr
+= opd_ent_size
;
8172 if (add_aux_fields
&& opd_ent_size
== 16)
8174 memset (wptr
, '\0', 8);
8178 /* We need to adjust any reloc offsets to point to the
8180 for ( ; rel
!= next_rel
; ++rel
)
8182 rel
->r_offset
+= adjust
;
8183 if (write_rel
!= rel
)
8184 memcpy (write_rel
, rel
, sizeof (*rel
));
8189 rptr
+= opd_ent_size
;
8192 sec
->size
= wptr
- new_contents
;
8193 sec
->reloc_count
= write_rel
- relstart
;
8196 free (sec
->contents
);
8197 sec
->contents
= new_contents
;
8200 /* Fudge the header size too, as this is used later in
8201 elf_bfd_final_link if we are emitting relocs. */
8202 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8203 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8206 else if (elf_section_data (sec
)->relocs
!= relstart
)
8209 if (local_syms
!= NULL
8210 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8212 if (!info
->keep_memory
)
8215 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8220 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8222 /* If we are doing a final link and the last .opd entry is just 16 byte
8223 long, add a 8 byte padding after it. */
8224 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8228 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8230 BFD_ASSERT (need_pad
->size
> 0);
8232 p
= bfd_malloc (need_pad
->size
+ 8);
8236 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8237 p
, 0, need_pad
->size
))
8240 need_pad
->contents
= p
;
8241 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8245 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8249 need_pad
->contents
= p
;
8252 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8253 need_pad
->size
+= 8;
8259 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8262 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8264 struct ppc_link_hash_table
*htab
;
8266 htab
= ppc_hash_table (info
);
8270 if (abiversion (info
->output_bfd
) == 1)
8273 if (htab
->params
->no_multi_toc
)
8274 htab
->do_multi_toc
= 0;
8275 else if (!htab
->do_multi_toc
)
8276 htab
->params
->no_multi_toc
= 1;
8278 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8279 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8280 FALSE
, FALSE
, TRUE
));
8281 /* Move dynamic linking info to the function descriptor sym. */
8282 if (htab
->tls_get_addr
!= NULL
)
8283 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8284 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8285 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8286 FALSE
, FALSE
, TRUE
));
8287 if (htab
->params
->tls_get_addr_opt
)
8289 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8291 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8292 FALSE
, FALSE
, TRUE
);
8294 func_desc_adjust (opt
, info
);
8295 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8296 FALSE
, FALSE
, TRUE
);
8298 && (opt_fd
->root
.type
== bfd_link_hash_defined
8299 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8301 /* If glibc supports an optimized __tls_get_addr call stub,
8302 signalled by the presence of __tls_get_addr_opt, and we'll
8303 be calling __tls_get_addr via a plt call stub, then
8304 make __tls_get_addr point to __tls_get_addr_opt. */
8305 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8306 if (htab
->elf
.dynamic_sections_created
8308 && (tga_fd
->type
== STT_FUNC
8309 || tga_fd
->needs_plt
)
8310 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8311 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8312 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8314 struct plt_entry
*ent
;
8316 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8317 if (ent
->plt
.refcount
> 0)
8321 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8322 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8323 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8324 opt_fd
->forced_local
= 0;
8325 if (opt_fd
->dynindx
!= -1)
8327 /* Use __tls_get_addr_opt in dynamic relocations. */
8328 opt_fd
->dynindx
= -1;
8329 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8330 opt_fd
->dynstr_index
);
8331 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8334 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8335 tga
= &htab
->tls_get_addr
->elf
;
8336 if (opt
!= NULL
&& tga
!= NULL
)
8338 tga
->root
.type
= bfd_link_hash_indirect
;
8339 tga
->root
.u
.i
.link
= &opt
->root
;
8340 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8341 opt
->forced_local
= 0;
8342 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8344 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8346 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8347 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8348 if (htab
->tls_get_addr
!= NULL
)
8350 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8351 htab
->tls_get_addr
->is_func
= 1;
8356 else if (htab
->params
->tls_get_addr_opt
< 0)
8357 htab
->params
->tls_get_addr_opt
= 0;
8359 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8362 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8366 branch_reloc_hash_match (const bfd
*ibfd
,
8367 const Elf_Internal_Rela
*rel
,
8368 const struct ppc_link_hash_entry
*hash1
,
8369 const struct ppc_link_hash_entry
*hash2
)
8371 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8372 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8373 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8375 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8377 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8378 struct elf_link_hash_entry
*h
;
8380 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8381 h
= elf_follow_link (h
);
8382 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8388 /* Run through all the TLS relocs looking for optimization
8389 opportunities. The linker has been hacked (see ppc64elf.em) to do
8390 a preliminary section layout so that we know the TLS segment
8391 offsets. We can't optimize earlier because some optimizations need
8392 to know the tp offset, and we need to optimize before allocating
8393 dynamic relocations. */
8396 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8400 struct ppc_link_hash_table
*htab
;
8401 unsigned char *toc_ref
;
8404 if (!bfd_link_executable (info
))
8407 htab
= ppc_hash_table (info
);
8411 /* Make two passes over the relocs. On the first pass, mark toc
8412 entries involved with tls relocs, and check that tls relocs
8413 involved in setting up a tls_get_addr call are indeed followed by
8414 such a call. If they are not, we can't do any tls optimization.
8415 On the second pass twiddle tls_mask flags to notify
8416 relocate_section that optimization can be done, and adjust got
8417 and plt refcounts. */
8419 for (pass
= 0; pass
< 2; ++pass
)
8420 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8422 Elf_Internal_Sym
*locsyms
= NULL
;
8423 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8425 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8426 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8428 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8429 bfd_boolean found_tls_get_addr_arg
= 0;
8431 /* Read the relocations. */
8432 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8434 if (relstart
== NULL
)
8440 relend
= relstart
+ sec
->reloc_count
;
8441 for (rel
= relstart
; rel
< relend
; rel
++)
8443 enum elf_ppc64_reloc_type r_type
;
8444 unsigned long r_symndx
;
8445 struct elf_link_hash_entry
*h
;
8446 Elf_Internal_Sym
*sym
;
8448 unsigned char *tls_mask
;
8449 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8451 bfd_boolean ok_tprel
, is_local
;
8452 long toc_ref_index
= 0;
8453 int expecting_tls_get_addr
= 0;
8454 bfd_boolean ret
= FALSE
;
8456 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8457 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8461 if (elf_section_data (sec
)->relocs
!= relstart
)
8463 if (toc_ref
!= NULL
)
8466 && (elf_symtab_hdr (ibfd
).contents
8467 != (unsigned char *) locsyms
))
8474 if (h
->root
.type
== bfd_link_hash_defined
8475 || h
->root
.type
== bfd_link_hash_defweak
)
8476 value
= h
->root
.u
.def
.value
;
8477 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8481 found_tls_get_addr_arg
= 0;
8486 /* Symbols referenced by TLS relocs must be of type
8487 STT_TLS. So no need for .opd local sym adjust. */
8488 value
= sym
->st_value
;
8497 && h
->root
.type
== bfd_link_hash_undefweak
)
8499 else if (sym_sec
!= NULL
8500 && sym_sec
->output_section
!= NULL
)
8502 value
+= sym_sec
->output_offset
;
8503 value
+= sym_sec
->output_section
->vma
;
8504 value
-= htab
->elf
.tls_sec
->vma
;
8505 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8506 < (bfd_vma
) 1 << 32);
8510 r_type
= ELF64_R_TYPE (rel
->r_info
);
8511 /* If this section has old-style __tls_get_addr calls
8512 without marker relocs, then check that each
8513 __tls_get_addr call reloc is preceded by a reloc
8514 that conceivably belongs to the __tls_get_addr arg
8515 setup insn. If we don't find matching arg setup
8516 relocs, don't do any tls optimization. */
8518 && sec
->has_tls_get_addr_call
8520 && (h
== &htab
->tls_get_addr
->elf
8521 || h
== &htab
->tls_get_addr_fd
->elf
)
8522 && !found_tls_get_addr_arg
8523 && is_branch_reloc (r_type
))
8525 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8526 "TLS optimization disabled\n"),
8527 ibfd
, sec
, rel
->r_offset
);
8532 found_tls_get_addr_arg
= 0;
8535 case R_PPC64_GOT_TLSLD16
:
8536 case R_PPC64_GOT_TLSLD16_LO
:
8537 expecting_tls_get_addr
= 1;
8538 found_tls_get_addr_arg
= 1;
8541 case R_PPC64_GOT_TLSLD16_HI
:
8542 case R_PPC64_GOT_TLSLD16_HA
:
8543 /* These relocs should never be against a symbol
8544 defined in a shared lib. Leave them alone if
8545 that turns out to be the case. */
8552 tls_type
= TLS_TLS
| TLS_LD
;
8555 case R_PPC64_GOT_TLSGD16
:
8556 case R_PPC64_GOT_TLSGD16_LO
:
8557 expecting_tls_get_addr
= 1;
8558 found_tls_get_addr_arg
= 1;
8561 case R_PPC64_GOT_TLSGD16_HI
:
8562 case R_PPC64_GOT_TLSGD16_HA
:
8568 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8570 tls_type
= TLS_TLS
| TLS_GD
;
8573 case R_PPC64_GOT_TPREL16_DS
:
8574 case R_PPC64_GOT_TPREL16_LO_DS
:
8575 case R_PPC64_GOT_TPREL16_HI
:
8576 case R_PPC64_GOT_TPREL16_HA
:
8581 tls_clear
= TLS_TPREL
;
8582 tls_type
= TLS_TLS
| TLS_TPREL
;
8589 found_tls_get_addr_arg
= 1;
8594 case R_PPC64_TOC16_LO
:
8595 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8598 /* Mark this toc entry as referenced by a TLS
8599 code sequence. We can do that now in the
8600 case of R_PPC64_TLS, and after checking for
8601 tls_get_addr for the TOC16 relocs. */
8602 if (toc_ref
== NULL
)
8603 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8604 if (toc_ref
== NULL
)
8608 value
= h
->root
.u
.def
.value
;
8610 value
= sym
->st_value
;
8611 value
+= rel
->r_addend
;
8614 BFD_ASSERT (value
< toc
->size
8615 && toc
->output_offset
% 8 == 0);
8616 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8617 if (r_type
== R_PPC64_TLS
8618 || r_type
== R_PPC64_TLSGD
8619 || r_type
== R_PPC64_TLSLD
)
8621 toc_ref
[toc_ref_index
] = 1;
8625 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8630 expecting_tls_get_addr
= 2;
8633 case R_PPC64_TPREL64
:
8637 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8642 tls_set
= TLS_EXPLICIT
;
8643 tls_clear
= TLS_TPREL
;
8648 case R_PPC64_DTPMOD64
:
8652 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8654 if (rel
+ 1 < relend
8656 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8657 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8661 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8664 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8673 tls_set
= TLS_EXPLICIT
;
8684 if (!expecting_tls_get_addr
8685 || !sec
->has_tls_get_addr_call
)
8688 if (rel
+ 1 < relend
8689 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8691 htab
->tls_get_addr_fd
))
8693 if (expecting_tls_get_addr
== 2)
8695 /* Check for toc tls entries. */
8696 unsigned char *toc_tls
;
8699 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8704 if (toc_tls
!= NULL
)
8706 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8707 found_tls_get_addr_arg
= 1;
8709 toc_ref
[toc_ref_index
] = 1;
8715 if (expecting_tls_get_addr
!= 1)
8718 /* Uh oh, we didn't find the expected call. We
8719 could just mark this symbol to exclude it
8720 from tls optimization but it's safer to skip
8721 the entire optimization. */
8722 /* xgettext:c-format */
8723 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8724 "TLS optimization disabled\n"),
8725 ibfd
, sec
, rel
->r_offset
);
8730 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8732 struct plt_entry
*ent
;
8733 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8736 if (ent
->addend
== 0)
8738 if (ent
->plt
.refcount
> 0)
8740 ent
->plt
.refcount
-= 1;
8741 expecting_tls_get_addr
= 0;
8747 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8749 struct plt_entry
*ent
;
8750 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8753 if (ent
->addend
== 0)
8755 if (ent
->plt
.refcount
> 0)
8756 ent
->plt
.refcount
-= 1;
8764 if ((tls_set
& TLS_EXPLICIT
) == 0)
8766 struct got_entry
*ent
;
8768 /* Adjust got entry for this reloc. */
8772 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8774 for (; ent
!= NULL
; ent
= ent
->next
)
8775 if (ent
->addend
== rel
->r_addend
8776 && ent
->owner
== ibfd
8777 && ent
->tls_type
== tls_type
)
8784 /* We managed to get rid of a got entry. */
8785 if (ent
->got
.refcount
> 0)
8786 ent
->got
.refcount
-= 1;
8791 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8792 we'll lose one or two dyn relocs. */
8793 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8797 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8799 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8805 *tls_mask
|= tls_set
;
8806 *tls_mask
&= ~tls_clear
;
8809 if (elf_section_data (sec
)->relocs
!= relstart
)
8814 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8816 if (!info
->keep_memory
)
8819 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8823 if (toc_ref
!= NULL
)
8828 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8829 the values of any global symbols in a toc section that has been
8830 edited. Globals in toc sections should be a rarity, so this function
8831 sets a flag if any are found in toc sections other than the one just
8832 edited, so that futher hash table traversals can be avoided. */
8834 struct adjust_toc_info
8837 unsigned long *skip
;
8838 bfd_boolean global_toc_syms
;
8841 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8844 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8846 struct ppc_link_hash_entry
*eh
;
8847 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8850 if (h
->root
.type
!= bfd_link_hash_defined
8851 && h
->root
.type
!= bfd_link_hash_defweak
)
8854 eh
= (struct ppc_link_hash_entry
*) h
;
8855 if (eh
->adjust_done
)
8858 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8860 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8861 i
= toc_inf
->toc
->rawsize
>> 3;
8863 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8865 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8868 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8871 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8872 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8875 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8876 eh
->adjust_done
= 1;
8878 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8879 toc_inf
->global_toc_syms
= TRUE
;
8884 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8887 ok_lo_toc_insn (unsigned int insn
)
8889 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8890 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8891 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8892 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8893 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8894 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8895 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8896 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8897 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8898 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8899 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8900 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8901 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8902 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8903 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8905 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8906 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8907 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8910 /* Examine all relocs referencing .toc sections in order to remove
8911 unused .toc entries. */
8914 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8917 struct adjust_toc_info toc_inf
;
8918 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8920 htab
->do_toc_opt
= 1;
8921 toc_inf
.global_toc_syms
= TRUE
;
8922 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8924 asection
*toc
, *sec
;
8925 Elf_Internal_Shdr
*symtab_hdr
;
8926 Elf_Internal_Sym
*local_syms
;
8927 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8928 unsigned long *skip
, *drop
;
8929 unsigned char *used
;
8930 unsigned char *keep
, last
, some_unused
;
8932 if (!is_ppc64_elf (ibfd
))
8935 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8938 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8939 || discarded_section (toc
))
8944 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8946 /* Look at sections dropped from the final link. */
8949 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8951 if (sec
->reloc_count
== 0
8952 || !discarded_section (sec
)
8953 || get_opd_info (sec
)
8954 || (sec
->flags
& SEC_ALLOC
) == 0
8955 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8958 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8959 if (relstart
== NULL
)
8962 /* Run through the relocs to see which toc entries might be
8964 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8966 enum elf_ppc64_reloc_type r_type
;
8967 unsigned long r_symndx
;
8969 struct elf_link_hash_entry
*h
;
8970 Elf_Internal_Sym
*sym
;
8973 r_type
= ELF64_R_TYPE (rel
->r_info
);
8980 case R_PPC64_TOC16_LO
:
8981 case R_PPC64_TOC16_HI
:
8982 case R_PPC64_TOC16_HA
:
8983 case R_PPC64_TOC16_DS
:
8984 case R_PPC64_TOC16_LO_DS
:
8988 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8989 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8997 val
= h
->root
.u
.def
.value
;
8999 val
= sym
->st_value
;
9000 val
+= rel
->r_addend
;
9002 if (val
>= toc
->size
)
9005 /* Anything in the toc ought to be aligned to 8 bytes.
9006 If not, don't mark as unused. */
9012 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9017 skip
[val
>> 3] = ref_from_discarded
;
9020 if (elf_section_data (sec
)->relocs
!= relstart
)
9024 /* For largetoc loads of address constants, we can convert
9025 . addis rx,2,addr@got@ha
9026 . ld ry,addr@got@l(rx)
9028 . addis rx,2,addr@toc@ha
9029 . addi ry,rx,addr@toc@l
9030 when addr is within 2G of the toc pointer. This then means
9031 that the word storing "addr" in the toc is no longer needed. */
9033 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9034 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9035 && toc
->reloc_count
!= 0)
9037 /* Read toc relocs. */
9038 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9040 if (toc_relocs
== NULL
)
9043 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9045 enum elf_ppc64_reloc_type r_type
;
9046 unsigned long r_symndx
;
9048 struct elf_link_hash_entry
*h
;
9049 Elf_Internal_Sym
*sym
;
9052 r_type
= ELF64_R_TYPE (rel
->r_info
);
9053 if (r_type
!= R_PPC64_ADDR64
)
9056 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9057 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9062 || sym_sec
->output_section
== NULL
9063 || discarded_section (sym_sec
))
9066 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9071 if (h
->type
== STT_GNU_IFUNC
)
9073 val
= h
->root
.u
.def
.value
;
9077 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9079 val
= sym
->st_value
;
9081 val
+= rel
->r_addend
;
9082 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9084 /* We don't yet know the exact toc pointer value, but we
9085 know it will be somewhere in the toc section. Don't
9086 optimize if the difference from any possible toc
9087 pointer is outside [ff..f80008000, 7fff7fff]. */
9088 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9089 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9092 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9093 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9098 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9103 skip
[rel
->r_offset
>> 3]
9104 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9111 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9115 if (local_syms
!= NULL
9116 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9120 && elf_section_data (sec
)->relocs
!= relstart
)
9122 if (toc_relocs
!= NULL
9123 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9130 /* Now check all kept sections that might reference the toc.
9131 Check the toc itself last. */
9132 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9135 sec
= (sec
== toc
? NULL
9136 : sec
->next
== NULL
? toc
9137 : sec
->next
== toc
&& toc
->next
? toc
->next
9142 if (sec
->reloc_count
== 0
9143 || discarded_section (sec
)
9144 || get_opd_info (sec
)
9145 || (sec
->flags
& SEC_ALLOC
) == 0
9146 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9149 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9151 if (relstart
== NULL
)
9157 /* Mark toc entries referenced as used. */
9161 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9163 enum elf_ppc64_reloc_type r_type
;
9164 unsigned long r_symndx
;
9166 struct elf_link_hash_entry
*h
;
9167 Elf_Internal_Sym
*sym
;
9169 enum {no_check
, check_lo
, check_ha
} insn_check
;
9171 r_type
= ELF64_R_TYPE (rel
->r_info
);
9175 insn_check
= no_check
;
9178 case R_PPC64_GOT_TLSLD16_HA
:
9179 case R_PPC64_GOT_TLSGD16_HA
:
9180 case R_PPC64_GOT_TPREL16_HA
:
9181 case R_PPC64_GOT_DTPREL16_HA
:
9182 case R_PPC64_GOT16_HA
:
9183 case R_PPC64_TOC16_HA
:
9184 insn_check
= check_ha
;
9187 case R_PPC64_GOT_TLSLD16_LO
:
9188 case R_PPC64_GOT_TLSGD16_LO
:
9189 case R_PPC64_GOT_TPREL16_LO_DS
:
9190 case R_PPC64_GOT_DTPREL16_LO_DS
:
9191 case R_PPC64_GOT16_LO
:
9192 case R_PPC64_GOT16_LO_DS
:
9193 case R_PPC64_TOC16_LO
:
9194 case R_PPC64_TOC16_LO_DS
:
9195 insn_check
= check_lo
;
9199 if (insn_check
!= no_check
)
9201 bfd_vma off
= rel
->r_offset
& ~3;
9202 unsigned char buf
[4];
9205 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9210 insn
= bfd_get_32 (ibfd
, buf
);
9211 if (insn_check
== check_lo
9212 ? !ok_lo_toc_insn (insn
)
9213 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9214 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9218 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9219 sprintf (str
, "%#08x", insn
);
9220 info
->callbacks
->einfo
9221 /* xgettext:c-format */
9222 (_("%P: %H: toc optimization is not supported for"
9223 " %s instruction.\n"),
9224 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9231 case R_PPC64_TOC16_LO
:
9232 case R_PPC64_TOC16_HI
:
9233 case R_PPC64_TOC16_HA
:
9234 case R_PPC64_TOC16_DS
:
9235 case R_PPC64_TOC16_LO_DS
:
9236 /* In case we're taking addresses of toc entries. */
9237 case R_PPC64_ADDR64
:
9244 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9245 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9256 val
= h
->root
.u
.def
.value
;
9258 val
= sym
->st_value
;
9259 val
+= rel
->r_addend
;
9261 if (val
>= toc
->size
)
9264 if ((skip
[val
>> 3] & can_optimize
) != 0)
9271 case R_PPC64_TOC16_HA
:
9274 case R_PPC64_TOC16_LO_DS
:
9275 off
= rel
->r_offset
;
9276 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9277 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9283 if ((opc
& (0x3f << 2)) == (58u << 2))
9288 /* Wrong sort of reloc, or not a ld. We may
9289 as well clear ref_from_discarded too. */
9296 /* For the toc section, we only mark as used if this
9297 entry itself isn't unused. */
9298 else if ((used
[rel
->r_offset
>> 3]
9299 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9302 /* Do all the relocs again, to catch reference
9311 if (elf_section_data (sec
)->relocs
!= relstart
)
9315 /* Merge the used and skip arrays. Assume that TOC
9316 doublewords not appearing as either used or unused belong
9317 to to an entry more than one doubleword in size. */
9318 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9319 drop
< skip
+ (toc
->size
+ 7) / 8;
9324 *drop
&= ~ref_from_discarded
;
9325 if ((*drop
& can_optimize
) != 0)
9329 else if ((*drop
& ref_from_discarded
) != 0)
9332 last
= ref_from_discarded
;
9342 bfd_byte
*contents
, *src
;
9344 Elf_Internal_Sym
*sym
;
9345 bfd_boolean local_toc_syms
= FALSE
;
9347 /* Shuffle the toc contents, and at the same time convert the
9348 skip array from booleans into offsets. */
9349 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9352 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9354 for (src
= contents
, off
= 0, drop
= skip
;
9355 src
< contents
+ toc
->size
;
9358 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9363 memcpy (src
- off
, src
, 8);
9367 toc
->rawsize
= toc
->size
;
9368 toc
->size
= src
- contents
- off
;
9370 /* Adjust addends for relocs against the toc section sym,
9371 and optimize any accesses we can. */
9372 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9374 if (sec
->reloc_count
== 0
9375 || discarded_section (sec
))
9378 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9380 if (relstart
== NULL
)
9383 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9385 enum elf_ppc64_reloc_type r_type
;
9386 unsigned long r_symndx
;
9388 struct elf_link_hash_entry
*h
;
9391 r_type
= ELF64_R_TYPE (rel
->r_info
);
9398 case R_PPC64_TOC16_LO
:
9399 case R_PPC64_TOC16_HI
:
9400 case R_PPC64_TOC16_HA
:
9401 case R_PPC64_TOC16_DS
:
9402 case R_PPC64_TOC16_LO_DS
:
9403 case R_PPC64_ADDR64
:
9407 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9408 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9416 val
= h
->root
.u
.def
.value
;
9419 val
= sym
->st_value
;
9421 local_toc_syms
= TRUE
;
9424 val
+= rel
->r_addend
;
9426 if (val
> toc
->rawsize
)
9428 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9430 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9432 Elf_Internal_Rela
*tocrel
9433 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9434 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9438 case R_PPC64_TOC16_HA
:
9439 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9442 case R_PPC64_TOC16_LO_DS
:
9443 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9447 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9449 info
->callbacks
->einfo
9450 /* xgettext:c-format */
9451 (_("%P: %H: %s references "
9452 "optimized away TOC entry\n"),
9453 ibfd
, sec
, rel
->r_offset
,
9454 ppc64_elf_howto_table
[r_type
]->name
);
9455 bfd_set_error (bfd_error_bad_value
);
9458 rel
->r_addend
= tocrel
->r_addend
;
9459 elf_section_data (sec
)->relocs
= relstart
;
9463 if (h
!= NULL
|| sym
->st_value
!= 0)
9466 rel
->r_addend
-= skip
[val
>> 3];
9467 elf_section_data (sec
)->relocs
= relstart
;
9470 if (elf_section_data (sec
)->relocs
!= relstart
)
9474 /* We shouldn't have local or global symbols defined in the TOC,
9475 but handle them anyway. */
9476 if (local_syms
!= NULL
)
9477 for (sym
= local_syms
;
9478 sym
< local_syms
+ symtab_hdr
->sh_info
;
9480 if (sym
->st_value
!= 0
9481 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9485 if (sym
->st_value
> toc
->rawsize
)
9486 i
= toc
->rawsize
>> 3;
9488 i
= sym
->st_value
>> 3;
9490 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9494 (_("%s defined on removed toc entry"),
9495 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9498 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9499 sym
->st_value
= (bfd_vma
) i
<< 3;
9502 sym
->st_value
-= skip
[i
];
9503 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9506 /* Adjust any global syms defined in this toc input section. */
9507 if (toc_inf
.global_toc_syms
)
9510 toc_inf
.skip
= skip
;
9511 toc_inf
.global_toc_syms
= FALSE
;
9512 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9516 if (toc
->reloc_count
!= 0)
9518 Elf_Internal_Shdr
*rel_hdr
;
9519 Elf_Internal_Rela
*wrel
;
9522 /* Remove unused toc relocs, and adjust those we keep. */
9523 if (toc_relocs
== NULL
)
9524 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9526 if (toc_relocs
== NULL
)
9530 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9531 if ((skip
[rel
->r_offset
>> 3]
9532 & (ref_from_discarded
| can_optimize
)) == 0)
9534 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9535 wrel
->r_info
= rel
->r_info
;
9536 wrel
->r_addend
= rel
->r_addend
;
9539 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9540 &local_syms
, NULL
, NULL
))
9543 elf_section_data (toc
)->relocs
= toc_relocs
;
9544 toc
->reloc_count
= wrel
- toc_relocs
;
9545 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9546 sz
= rel_hdr
->sh_entsize
;
9547 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9550 else if (toc_relocs
!= NULL
9551 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9554 if (local_syms
!= NULL
9555 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9557 if (!info
->keep_memory
)
9560 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9568 /* Return true iff input section I references the TOC using
9569 instructions limited to +/-32k offsets. */
9572 ppc64_elf_has_small_toc_reloc (asection
*i
)
9574 return (is_ppc64_elf (i
->owner
)
9575 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9578 /* Allocate space for one GOT entry. */
9581 allocate_got (struct elf_link_hash_entry
*h
,
9582 struct bfd_link_info
*info
,
9583 struct got_entry
*gent
)
9585 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9587 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9588 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9590 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9591 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9592 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9594 gent
->got
.offset
= got
->size
;
9595 got
->size
+= entsize
;
9597 dyn
= htab
->elf
.dynamic_sections_created
;
9598 if (h
->type
== STT_GNU_IFUNC
)
9600 htab
->elf
.irelplt
->size
+= rentsize
;
9601 htab
->got_reli_size
+= rentsize
;
9603 else if ((bfd_link_pic (info
)
9604 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9605 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9606 || h
->root
.type
!= bfd_link_hash_undefweak
))
9608 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9609 relgot
->size
+= rentsize
;
9613 /* This function merges got entries in the same toc group. */
9616 merge_got_entries (struct got_entry
**pent
)
9618 struct got_entry
*ent
, *ent2
;
9620 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9621 if (!ent
->is_indirect
)
9622 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9623 if (!ent2
->is_indirect
9624 && ent2
->addend
== ent
->addend
9625 && ent2
->tls_type
== ent
->tls_type
9626 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9628 ent2
->is_indirect
= TRUE
;
9629 ent2
->got
.ent
= ent
;
9633 /* Allocate space in .plt, .got and associated reloc sections for
9637 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9639 struct bfd_link_info
*info
;
9640 struct ppc_link_hash_table
*htab
;
9642 struct ppc_link_hash_entry
*eh
;
9643 struct got_entry
**pgent
, *gent
;
9645 if (h
->root
.type
== bfd_link_hash_indirect
)
9648 info
= (struct bfd_link_info
*) inf
;
9649 htab
= ppc_hash_table (info
);
9653 eh
= (struct ppc_link_hash_entry
*) h
;
9654 /* Run through the TLS GD got entries first if we're changing them
9656 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9657 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9658 if (gent
->got
.refcount
> 0
9659 && (gent
->tls_type
& TLS_GD
) != 0)
9661 /* This was a GD entry that has been converted to TPREL. If
9662 there happens to be a TPREL entry we can use that one. */
9663 struct got_entry
*ent
;
9664 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9665 if (ent
->got
.refcount
> 0
9666 && (ent
->tls_type
& TLS_TPREL
) != 0
9667 && ent
->addend
== gent
->addend
9668 && ent
->owner
== gent
->owner
)
9670 gent
->got
.refcount
= 0;
9674 /* If not, then we'll be using our own TPREL entry. */
9675 if (gent
->got
.refcount
!= 0)
9676 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9679 /* Remove any list entry that won't generate a word in the GOT before
9680 we call merge_got_entries. Otherwise we risk merging to empty
9682 pgent
= &h
->got
.glist
;
9683 while ((gent
= *pgent
) != NULL
)
9684 if (gent
->got
.refcount
> 0)
9686 if ((gent
->tls_type
& TLS_LD
) != 0
9689 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9690 *pgent
= gent
->next
;
9693 pgent
= &gent
->next
;
9696 *pgent
= gent
->next
;
9698 if (!htab
->do_multi_toc
)
9699 merge_got_entries (&h
->got
.glist
);
9701 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9702 if (!gent
->is_indirect
)
9704 /* Make sure this symbol is output as a dynamic symbol.
9705 Undefined weak syms won't yet be marked as dynamic,
9706 nor will all TLS symbols. */
9707 if (h
->dynindx
== -1
9709 && h
->type
!= STT_GNU_IFUNC
9710 && htab
->elf
.dynamic_sections_created
)
9712 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9716 if (!is_ppc64_elf (gent
->owner
))
9719 allocate_got (h
, info
, gent
);
9722 if (!htab
->elf
.dynamic_sections_created
9723 && h
->type
!= STT_GNU_IFUNC
)
9724 eh
->dyn_relocs
= NULL
;
9726 if (eh
->dyn_relocs
!= NULL
)
9728 struct elf_dyn_relocs
*p
, **pp
;
9730 /* In the shared -Bsymbolic case, discard space allocated for
9731 dynamic pc-relative relocs against symbols which turn out to
9732 be defined in regular objects. For the normal shared case,
9733 discard space for relocs that have become local due to symbol
9734 visibility changes. */
9736 if (bfd_link_pic (info
))
9738 /* Relocs that use pc_count are those that appear on a call
9739 insn, or certain REL relocs (see must_be_dyn_reloc) that
9740 can be generated via assembly. We want calls to
9741 protected symbols to resolve directly to the function
9742 rather than going via the plt. If people want function
9743 pointer comparisons to work as expected then they should
9744 avoid writing weird assembly. */
9745 if (SYMBOL_CALLS_LOCAL (info
, h
))
9747 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9749 p
->count
-= p
->pc_count
;
9758 /* Also discard relocs on undefined weak syms with
9759 non-default visibility. */
9760 if (eh
->dyn_relocs
!= NULL
9761 && h
->root
.type
== bfd_link_hash_undefweak
)
9763 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9764 eh
->dyn_relocs
= NULL
;
9766 /* Make sure this symbol is output as a dynamic symbol.
9767 Undefined weak syms won't yet be marked as dynamic. */
9768 else if (h
->dynindx
== -1
9769 && !h
->forced_local
)
9771 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9776 else if (h
->type
== STT_GNU_IFUNC
)
9778 /* A plt entry is always created when making direct calls to
9779 an ifunc, even when building a static executable, but
9780 that doesn't cover all cases. We may have only an ifunc
9781 initialised function pointer for a given ifunc symbol.
9783 For ELFv2, dynamic relocations are not required when
9784 generating a global entry PLT stub. */
9785 if (abiversion (info
->output_bfd
) >= 2)
9787 if (global_entry_stub (h
))
9788 eh
->dyn_relocs
= NULL
;
9791 /* For ELFv1 we have function descriptors. Descriptors need
9792 to be treated like PLT entries and thus have dynamic
9793 relocations. One exception is when the function
9794 descriptor is copied into .dynbss (which should only
9795 happen with ancient versions of gcc). */
9796 else if (h
->needs_copy
)
9797 eh
->dyn_relocs
= NULL
;
9799 else if (ELIMINATE_COPY_RELOCS
)
9801 /* For the non-pic case, discard space for relocs against
9802 symbols which turn out to need copy relocs or are not
9805 /* First make sure this symbol is output as a dynamic symbol.
9806 Undefined weak syms won't yet be marked as dynamic. */
9807 if (h
->root
.type
== bfd_link_hash_undefweak
9812 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
9817 || h
->dynindx
== -1)
9818 eh
->dyn_relocs
= NULL
;
9821 /* Finally, allocate space. */
9822 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9824 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9825 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9826 sreloc
= htab
->elf
.irelplt
;
9827 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9831 if ((htab
->elf
.dynamic_sections_created
9833 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
9834 || h
->type
== STT_GNU_IFUNC
)
9836 struct plt_entry
*pent
;
9837 bfd_boolean doneone
= FALSE
;
9838 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9839 if (pent
->plt
.refcount
> 0)
9841 if (!htab
->elf
.dynamic_sections_created
9842 || h
->dynindx
== -1)
9845 pent
->plt
.offset
= s
->size
;
9846 s
->size
+= PLT_ENTRY_SIZE (htab
);
9847 s
= htab
->elf
.irelplt
;
9851 /* If this is the first .plt entry, make room for the special
9855 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9857 pent
->plt
.offset
= s
->size
;
9859 /* Make room for this entry. */
9860 s
->size
+= PLT_ENTRY_SIZE (htab
);
9862 /* Make room for the .glink code. */
9865 s
->size
+= GLINK_CALL_STUB_SIZE
;
9868 /* We need bigger stubs past index 32767. */
9869 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9876 /* We also need to make an entry in the .rela.plt section. */
9877 s
= htab
->elf
.srelplt
;
9879 s
->size
+= sizeof (Elf64_External_Rela
);
9883 pent
->plt
.offset
= (bfd_vma
) -1;
9886 h
->plt
.plist
= NULL
;
9892 h
->plt
.plist
= NULL
;
9899 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9900 to set up space for global entry stubs. These are put in glink,
9901 after the branch table. */
9904 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9906 struct bfd_link_info
*info
;
9907 struct ppc_link_hash_table
*htab
;
9908 struct plt_entry
*pent
;
9911 if (h
->root
.type
== bfd_link_hash_indirect
)
9914 if (!h
->pointer_equality_needed
)
9921 htab
= ppc_hash_table (info
);
9926 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9927 if (pent
->plt
.offset
!= (bfd_vma
) -1
9928 && pent
->addend
== 0)
9930 /* For ELFv2, if this symbol is not defined in a regular file
9931 and we are not generating a shared library or pie, then we
9932 need to define the symbol in the executable on a call stub.
9933 This is to avoid text relocations. */
9934 s
->size
= (s
->size
+ 15) & -16;
9935 h
->root
.type
= bfd_link_hash_defined
;
9936 h
->root
.u
.def
.section
= s
;
9937 h
->root
.u
.def
.value
= s
->size
;
9944 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9945 read-only sections. */
9948 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9950 if (h
->root
.type
== bfd_link_hash_indirect
)
9953 if (readonly_dynrelocs (h
))
9955 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9957 /* Not an error, just cut short the traversal. */
9963 /* Set the sizes of the dynamic sections. */
9966 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9967 struct bfd_link_info
*info
)
9969 struct ppc_link_hash_table
*htab
;
9974 struct got_entry
*first_tlsld
;
9976 htab
= ppc_hash_table (info
);
9980 dynobj
= htab
->elf
.dynobj
;
9984 if (htab
->elf
.dynamic_sections_created
)
9986 /* Set the contents of the .interp section to the interpreter. */
9987 if (bfd_link_executable (info
) && !info
->nointerp
)
9989 s
= bfd_get_linker_section (dynobj
, ".interp");
9992 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9993 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9997 /* Set up .got offsets for local syms, and space for local dynamic
9999 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10001 struct got_entry
**lgot_ents
;
10002 struct got_entry
**end_lgot_ents
;
10003 struct plt_entry
**local_plt
;
10004 struct plt_entry
**end_local_plt
;
10005 unsigned char *lgot_masks
;
10006 bfd_size_type locsymcount
;
10007 Elf_Internal_Shdr
*symtab_hdr
;
10009 if (!is_ppc64_elf (ibfd
))
10012 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10014 struct ppc_dyn_relocs
*p
;
10016 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10018 if (!bfd_is_abs_section (p
->sec
)
10019 && bfd_is_abs_section (p
->sec
->output_section
))
10021 /* Input section has been discarded, either because
10022 it is a copy of a linkonce section or due to
10023 linker script /DISCARD/, so we'll be discarding
10026 else if (p
->count
!= 0)
10028 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10030 srel
= htab
->elf
.irelplt
;
10031 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10032 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10033 info
->flags
|= DF_TEXTREL
;
10038 lgot_ents
= elf_local_got_ents (ibfd
);
10042 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10043 locsymcount
= symtab_hdr
->sh_info
;
10044 end_lgot_ents
= lgot_ents
+ locsymcount
;
10045 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10046 end_local_plt
= local_plt
+ locsymcount
;
10047 lgot_masks
= (unsigned char *) end_local_plt
;
10048 s
= ppc64_elf_tdata (ibfd
)->got
;
10049 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10051 struct got_entry
**pent
, *ent
;
10054 while ((ent
= *pent
) != NULL
)
10055 if (ent
->got
.refcount
> 0)
10057 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10059 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10064 unsigned int ent_size
= 8;
10065 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10067 ent
->got
.offset
= s
->size
;
10068 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10073 s
->size
+= ent_size
;
10074 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10076 htab
->elf
.irelplt
->size
+= rel_size
;
10077 htab
->got_reli_size
+= rel_size
;
10079 else if (bfd_link_pic (info
))
10081 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10082 srel
->size
+= rel_size
;
10091 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10092 for (; local_plt
< end_local_plt
; ++local_plt
)
10094 struct plt_entry
*ent
;
10096 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10097 if (ent
->plt
.refcount
> 0)
10099 s
= htab
->elf
.iplt
;
10100 ent
->plt
.offset
= s
->size
;
10101 s
->size
+= PLT_ENTRY_SIZE (htab
);
10103 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10106 ent
->plt
.offset
= (bfd_vma
) -1;
10110 /* Allocate global sym .plt and .got entries, and space for global
10111 sym dynamic relocs. */
10112 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10113 /* Stash the end of glink branch table. */
10114 if (htab
->glink
!= NULL
)
10115 htab
->glink
->rawsize
= htab
->glink
->size
;
10117 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10118 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10120 first_tlsld
= NULL
;
10121 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10123 struct got_entry
*ent
;
10125 if (!is_ppc64_elf (ibfd
))
10128 ent
= ppc64_tlsld_got (ibfd
);
10129 if (ent
->got
.refcount
> 0)
10131 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10133 ent
->is_indirect
= TRUE
;
10134 ent
->got
.ent
= first_tlsld
;
10138 if (first_tlsld
== NULL
)
10140 s
= ppc64_elf_tdata (ibfd
)->got
;
10141 ent
->got
.offset
= s
->size
;
10144 if (bfd_link_pic (info
))
10146 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10147 srel
->size
+= sizeof (Elf64_External_Rela
);
10152 ent
->got
.offset
= (bfd_vma
) -1;
10155 /* We now have determined the sizes of the various dynamic sections.
10156 Allocate memory for them. */
10158 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10160 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10163 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10164 /* These haven't been allocated yet; don't strip. */
10166 else if (s
== htab
->elf
.sgot
10167 || s
== htab
->elf
.splt
10168 || s
== htab
->elf
.iplt
10169 || s
== htab
->glink
10170 || s
== htab
->dynbss
)
10172 /* Strip this section if we don't need it; see the
10175 else if (s
== htab
->glink_eh_frame
)
10177 if (!bfd_is_abs_section (s
->output_section
))
10178 /* Not sized yet. */
10181 else if (CONST_STRNEQ (s
->name
, ".rela"))
10185 if (s
!= htab
->elf
.srelplt
)
10188 /* We use the reloc_count field as a counter if we need
10189 to copy relocs into the output file. */
10190 s
->reloc_count
= 0;
10195 /* It's not one of our sections, so don't allocate space. */
10201 /* If we don't need this section, strip it from the
10202 output file. This is mostly to handle .rela.bss and
10203 .rela.plt. We must create both sections in
10204 create_dynamic_sections, because they must be created
10205 before the linker maps input sections to output
10206 sections. The linker does that before
10207 adjust_dynamic_symbol is called, and it is that
10208 function which decides whether anything needs to go
10209 into these sections. */
10210 s
->flags
|= SEC_EXCLUDE
;
10214 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10217 /* Allocate memory for the section contents. We use bfd_zalloc
10218 here in case unused entries are not reclaimed before the
10219 section's contents are written out. This should not happen,
10220 but this way if it does we get a R_PPC64_NONE reloc in .rela
10221 sections instead of garbage.
10222 We also rely on the section contents being zero when writing
10224 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10225 if (s
->contents
== NULL
)
10229 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10231 if (!is_ppc64_elf (ibfd
))
10234 s
= ppc64_elf_tdata (ibfd
)->got
;
10235 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10238 s
->flags
|= SEC_EXCLUDE
;
10241 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10242 if (s
->contents
== NULL
)
10246 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10250 s
->flags
|= SEC_EXCLUDE
;
10253 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10254 if (s
->contents
== NULL
)
10257 s
->reloc_count
= 0;
10262 if (htab
->elf
.dynamic_sections_created
)
10264 bfd_boolean tls_opt
;
10266 /* Add some entries to the .dynamic section. We fill in the
10267 values later, in ppc64_elf_finish_dynamic_sections, but we
10268 must add the entries now so that we get the correct size for
10269 the .dynamic section. The DT_DEBUG entry is filled in by the
10270 dynamic linker and used by the debugger. */
10271 #define add_dynamic_entry(TAG, VAL) \
10272 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10274 if (bfd_link_executable (info
))
10276 if (!add_dynamic_entry (DT_DEBUG
, 0))
10280 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10282 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10283 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10284 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10285 || !add_dynamic_entry (DT_JMPREL
, 0)
10286 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10290 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10292 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10293 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10297 tls_opt
= (htab
->params
->tls_get_addr_opt
10298 && htab
->tls_get_addr_fd
!= NULL
10299 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10300 if (tls_opt
|| !htab
->opd_abi
)
10302 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10308 if (!add_dynamic_entry (DT_RELA
, 0)
10309 || !add_dynamic_entry (DT_RELASZ
, 0)
10310 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10313 /* If any dynamic relocs apply to a read-only section,
10314 then we need a DT_TEXTREL entry. */
10315 if ((info
->flags
& DF_TEXTREL
) == 0)
10316 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10318 if ((info
->flags
& DF_TEXTREL
) != 0)
10320 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10325 #undef add_dynamic_entry
10330 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10333 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10335 if (h
->plt
.plist
!= NULL
10337 && !h
->pointer_equality_needed
)
10340 return _bfd_elf_hash_symbol (h
);
10343 /* Determine the type of stub needed, if any, for a call. */
10345 static inline enum ppc_stub_type
10346 ppc_type_of_stub (asection
*input_sec
,
10347 const Elf_Internal_Rela
*rel
,
10348 struct ppc_link_hash_entry
**hash
,
10349 struct plt_entry
**plt_ent
,
10350 bfd_vma destination
,
10351 unsigned long local_off
)
10353 struct ppc_link_hash_entry
*h
= *hash
;
10355 bfd_vma branch_offset
;
10356 bfd_vma max_branch_offset
;
10357 enum elf_ppc64_reloc_type r_type
;
10361 struct plt_entry
*ent
;
10362 struct ppc_link_hash_entry
*fdh
= h
;
10364 && h
->oh
->is_func_descriptor
)
10366 fdh
= ppc_follow_link (h
->oh
);
10370 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10371 if (ent
->addend
== rel
->r_addend
10372 && ent
->plt
.offset
!= (bfd_vma
) -1)
10375 return ppc_stub_plt_call
;
10378 /* Here, we know we don't have a plt entry. If we don't have a
10379 either a defined function descriptor or a defined entry symbol
10380 in a regular object file, then it is pointless trying to make
10381 any other type of stub. */
10382 if (!is_static_defined (&fdh
->elf
)
10383 && !is_static_defined (&h
->elf
))
10384 return ppc_stub_none
;
10386 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10388 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10389 struct plt_entry
**local_plt
= (struct plt_entry
**)
10390 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10391 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10393 if (local_plt
[r_symndx
] != NULL
)
10395 struct plt_entry
*ent
;
10397 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10398 if (ent
->addend
== rel
->r_addend
10399 && ent
->plt
.offset
!= (bfd_vma
) -1)
10402 return ppc_stub_plt_call
;
10407 /* Determine where the call point is. */
10408 location
= (input_sec
->output_offset
10409 + input_sec
->output_section
->vma
10412 branch_offset
= destination
- location
;
10413 r_type
= ELF64_R_TYPE (rel
->r_info
);
10415 /* Determine if a long branch stub is needed. */
10416 max_branch_offset
= 1 << 25;
10417 if (r_type
!= R_PPC64_REL24
)
10418 max_branch_offset
= 1 << 15;
10420 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10421 /* We need a stub. Figure out whether a long_branch or plt_branch
10422 is needed later. */
10423 return ppc_stub_long_branch
;
10425 return ppc_stub_none
;
10428 /* With power7 weakly ordered memory model, it is possible for ld.so
10429 to update a plt entry in one thread and have another thread see a
10430 stale zero toc entry. To avoid this we need some sort of acquire
10431 barrier in the call stub. One solution is to make the load of the
10432 toc word seem to appear to depend on the load of the function entry
10433 word. Another solution is to test for r2 being zero, and branch to
10434 the appropriate glink entry if so.
10436 . fake dep barrier compare
10437 . ld 12,xxx(2) ld 12,xxx(2)
10438 . mtctr 12 mtctr 12
10439 . xor 11,12,12 ld 2,xxx+8(2)
10440 . add 2,2,11 cmpldi 2,0
10441 . ld 2,xxx+8(2) bnectr+
10442 . bctr b <glink_entry>
10444 The solution involving the compare turns out to be faster, so
10445 that's what we use unless the branch won't reach. */
10447 #define ALWAYS_USE_FAKE_DEP 0
10448 #define ALWAYS_EMIT_R2SAVE 0
10450 #define PPC_LO(v) ((v) & 0xffff)
10451 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10452 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10454 static inline unsigned int
10455 plt_stub_size (struct ppc_link_hash_table
*htab
,
10456 struct ppc_stub_hash_entry
*stub_entry
,
10459 unsigned size
= 12;
10461 if (ALWAYS_EMIT_R2SAVE
10462 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10464 if (PPC_HA (off
) != 0)
10469 if (htab
->params
->plt_static_chain
)
10471 if (htab
->params
->plt_thread_safe
10472 && htab
->elf
.dynamic_sections_created
10473 && stub_entry
->h
!= NULL
10474 && stub_entry
->h
->elf
.dynindx
!= -1)
10476 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10479 if (stub_entry
->h
!= NULL
10480 && (stub_entry
->h
== htab
->tls_get_addr_fd
10481 || stub_entry
->h
== htab
->tls_get_addr
)
10482 && htab
->params
->tls_get_addr_opt
)
10487 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10488 then return the padding needed to do so. */
10489 static inline unsigned int
10490 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10491 struct ppc_stub_hash_entry
*stub_entry
,
10494 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10495 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10496 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10498 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10499 > ((stub_size
- 1) & -stub_align
))
10500 return stub_align
- (stub_off
& (stub_align
- 1));
10504 /* Build a .plt call stub. */
10506 static inline bfd_byte
*
10507 build_plt_stub (struct ppc_link_hash_table
*htab
,
10508 struct ppc_stub_hash_entry
*stub_entry
,
10509 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10511 bfd
*obfd
= htab
->params
->stub_bfd
;
10512 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10513 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10514 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10515 && htab
->elf
.dynamic_sections_created
10516 && stub_entry
->h
!= NULL
10517 && stub_entry
->h
->elf
.dynindx
!= -1);
10518 bfd_boolean use_fake_dep
= plt_thread_safe
;
10519 bfd_vma cmp_branch_off
= 0;
10521 if (!ALWAYS_USE_FAKE_DEP
10524 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10525 || stub_entry
->h
== htab
->tls_get_addr
)
10526 && htab
->params
->tls_get_addr_opt
))
10528 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10529 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10530 / PLT_ENTRY_SIZE (htab
));
10531 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10534 if (pltindex
> 32768)
10535 glinkoff
+= (pltindex
- 32768) * 4;
10537 + htab
->glink
->output_offset
10538 + htab
->glink
->output_section
->vma
);
10539 from
= (p
- stub_entry
->group
->stub_sec
->contents
10540 + 4 * (ALWAYS_EMIT_R2SAVE
10541 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10542 + 4 * (PPC_HA (offset
) != 0)
10543 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10544 != PPC_HA (offset
))
10545 + 4 * (plt_static_chain
!= 0)
10547 + stub_entry
->group
->stub_sec
->output_offset
10548 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10549 cmp_branch_off
= to
- from
;
10550 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10553 if (PPC_HA (offset
) != 0)
10557 if (ALWAYS_EMIT_R2SAVE
10558 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10559 r
[0].r_offset
+= 4;
10560 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10561 r
[1].r_offset
= r
[0].r_offset
+ 4;
10562 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10563 r
[1].r_addend
= r
[0].r_addend
;
10566 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10568 r
[2].r_offset
= r
[1].r_offset
+ 4;
10569 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10570 r
[2].r_addend
= r
[0].r_addend
;
10574 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10575 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10576 r
[2].r_addend
= r
[0].r_addend
+ 8;
10577 if (plt_static_chain
)
10579 r
[3].r_offset
= r
[2].r_offset
+ 4;
10580 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10581 r
[3].r_addend
= r
[0].r_addend
+ 16;
10586 if (ALWAYS_EMIT_R2SAVE
10587 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10588 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10591 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10592 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10596 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10597 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10600 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10602 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10605 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10610 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10611 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10613 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10614 if (plt_static_chain
)
10615 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10622 if (ALWAYS_EMIT_R2SAVE
10623 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10624 r
[0].r_offset
+= 4;
10625 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10628 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10630 r
[1].r_offset
= r
[0].r_offset
+ 4;
10631 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10632 r
[1].r_addend
= r
[0].r_addend
;
10636 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10637 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10638 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10639 if (plt_static_chain
)
10641 r
[2].r_offset
= r
[1].r_offset
+ 4;
10642 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10643 r
[2].r_addend
= r
[0].r_addend
+ 8;
10648 if (ALWAYS_EMIT_R2SAVE
10649 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10650 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10651 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10653 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10655 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10658 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10663 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10664 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10666 if (plt_static_chain
)
10667 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10668 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10671 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10673 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10674 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10675 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10678 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10682 /* Build a special .plt call stub for __tls_get_addr. */
10684 #define LD_R11_0R3 0xe9630000
10685 #define LD_R12_0R3 0xe9830000
10686 #define MR_R0_R3 0x7c601b78
10687 #define CMPDI_R11_0 0x2c2b0000
10688 #define ADD_R3_R12_R13 0x7c6c6a14
10689 #define BEQLR 0x4d820020
10690 #define MR_R3_R0 0x7c030378
10691 #define STD_R11_0R1 0xf9610000
10692 #define BCTRL 0x4e800421
10693 #define LD_R11_0R1 0xe9610000
10694 #define MTLR_R11 0x7d6803a6
10696 static inline bfd_byte
*
10697 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10698 struct ppc_stub_hash_entry
*stub_entry
,
10699 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10701 bfd
*obfd
= htab
->params
->stub_bfd
;
10703 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10704 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10705 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10706 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10707 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10708 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10709 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10710 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10711 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10714 r
[0].r_offset
+= 9 * 4;
10715 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10716 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10718 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10719 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10720 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10721 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10726 static Elf_Internal_Rela
*
10727 get_relocs (asection
*sec
, int count
)
10729 Elf_Internal_Rela
*relocs
;
10730 struct bfd_elf_section_data
*elfsec_data
;
10732 elfsec_data
= elf_section_data (sec
);
10733 relocs
= elfsec_data
->relocs
;
10734 if (relocs
== NULL
)
10736 bfd_size_type relsize
;
10737 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10738 relocs
= bfd_alloc (sec
->owner
, relsize
);
10739 if (relocs
== NULL
)
10741 elfsec_data
->relocs
= relocs
;
10742 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10743 sizeof (Elf_Internal_Shdr
));
10744 if (elfsec_data
->rela
.hdr
== NULL
)
10746 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10747 * sizeof (Elf64_External_Rela
));
10748 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10749 sec
->reloc_count
= 0;
10751 relocs
+= sec
->reloc_count
;
10752 sec
->reloc_count
+= count
;
10757 get_r2off (struct bfd_link_info
*info
,
10758 struct ppc_stub_hash_entry
*stub_entry
)
10760 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10761 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10765 /* Support linking -R objects. Get the toc pointer from the
10768 if (!htab
->opd_abi
)
10770 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10771 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10773 if (strcmp (opd
->name
, ".opd") != 0
10774 || opd
->reloc_count
!= 0)
10776 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10777 stub_entry
->h
->elf
.root
.root
.string
);
10778 bfd_set_error (bfd_error_bad_value
);
10779 return (bfd_vma
) -1;
10781 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10782 return (bfd_vma
) -1;
10783 r2off
= bfd_get_64 (opd
->owner
, buf
);
10784 r2off
-= elf_gp (info
->output_bfd
);
10786 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10791 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10793 struct ppc_stub_hash_entry
*stub_entry
;
10794 struct ppc_branch_hash_entry
*br_entry
;
10795 struct bfd_link_info
*info
;
10796 struct ppc_link_hash_table
*htab
;
10801 Elf_Internal_Rela
*r
;
10804 /* Massage our args to the form they really have. */
10805 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10808 htab
= ppc_hash_table (info
);
10812 /* Make a note of the offset within the stubs for this entry. */
10813 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10814 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10816 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10817 switch (stub_entry
->stub_type
)
10819 case ppc_stub_long_branch
:
10820 case ppc_stub_long_branch_r2off
:
10821 /* Branches are relative. This is where we are going to. */
10822 dest
= (stub_entry
->target_value
10823 + stub_entry
->target_section
->output_offset
10824 + stub_entry
->target_section
->output_section
->vma
);
10825 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10828 /* And this is where we are coming from. */
10829 off
-= (stub_entry
->stub_offset
10830 + stub_entry
->group
->stub_sec
->output_offset
10831 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10834 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10836 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10838 if (r2off
== (bfd_vma
) -1)
10840 htab
->stub_error
= TRUE
;
10843 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10846 if (PPC_HA (r2off
) != 0)
10848 bfd_put_32 (htab
->params
->stub_bfd
,
10849 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10853 if (PPC_LO (r2off
) != 0)
10855 bfd_put_32 (htab
->params
->stub_bfd
,
10856 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10862 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10864 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10866 info
->callbacks
->einfo
10867 (_("%P: long branch stub `%s' offset overflow\n"),
10868 stub_entry
->root
.string
);
10869 htab
->stub_error
= TRUE
;
10873 if (info
->emitrelocations
)
10875 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10878 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10879 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10880 r
->r_addend
= dest
;
10881 if (stub_entry
->h
!= NULL
)
10883 struct elf_link_hash_entry
**hashes
;
10884 unsigned long symndx
;
10885 struct ppc_link_hash_entry
*h
;
10887 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10888 if (hashes
== NULL
)
10890 bfd_size_type hsize
;
10892 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10893 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10894 if (hashes
== NULL
)
10896 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10897 htab
->stub_globals
= 1;
10899 symndx
= htab
->stub_globals
++;
10901 hashes
[symndx
] = &h
->elf
;
10902 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10903 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10904 h
= ppc_follow_link (h
->oh
);
10905 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10906 /* H is an opd symbol. The addend must be zero. */
10910 off
= (h
->elf
.root
.u
.def
.value
10911 + h
->elf
.root
.u
.def
.section
->output_offset
10912 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10913 r
->r_addend
-= off
;
10919 case ppc_stub_plt_branch
:
10920 case ppc_stub_plt_branch_r2off
:
10921 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10922 stub_entry
->root
.string
+ 9,
10924 if (br_entry
== NULL
)
10926 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10927 stub_entry
->root
.string
);
10928 htab
->stub_error
= TRUE
;
10932 dest
= (stub_entry
->target_value
10933 + stub_entry
->target_section
->output_offset
10934 + stub_entry
->target_section
->output_section
->vma
);
10935 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10936 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10938 bfd_put_64 (htab
->brlt
->owner
, dest
,
10939 htab
->brlt
->contents
+ br_entry
->offset
);
10941 if (br_entry
->iter
== htab
->stub_iteration
)
10943 br_entry
->iter
= 0;
10945 if (htab
->relbrlt
!= NULL
)
10947 /* Create a reloc for the branch lookup table entry. */
10948 Elf_Internal_Rela rela
;
10951 rela
.r_offset
= (br_entry
->offset
10952 + htab
->brlt
->output_offset
10953 + htab
->brlt
->output_section
->vma
);
10954 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10955 rela
.r_addend
= dest
;
10957 rl
= htab
->relbrlt
->contents
;
10958 rl
+= (htab
->relbrlt
->reloc_count
++
10959 * sizeof (Elf64_External_Rela
));
10960 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10962 else if (info
->emitrelocations
)
10964 r
= get_relocs (htab
->brlt
, 1);
10967 /* brlt, being SEC_LINKER_CREATED does not go through the
10968 normal reloc processing. Symbols and offsets are not
10969 translated from input file to output file form, so
10970 set up the offset per the output file. */
10971 r
->r_offset
= (br_entry
->offset
10972 + htab
->brlt
->output_offset
10973 + htab
->brlt
->output_section
->vma
);
10974 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10975 r
->r_addend
= dest
;
10979 dest
= (br_entry
->offset
10980 + htab
->brlt
->output_offset
10981 + htab
->brlt
->output_section
->vma
);
10984 - elf_gp (htab
->brlt
->output_section
->owner
)
10985 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
10987 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10989 info
->callbacks
->einfo
10990 (_("%P: linkage table error against `%T'\n"),
10991 stub_entry
->root
.string
);
10992 bfd_set_error (bfd_error_bad_value
);
10993 htab
->stub_error
= TRUE
;
10997 if (info
->emitrelocations
)
10999 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11002 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11003 if (bfd_big_endian (info
->output_bfd
))
11004 r
[0].r_offset
+= 2;
11005 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11006 r
[0].r_offset
+= 4;
11007 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11008 r
[0].r_addend
= dest
;
11009 if (PPC_HA (off
) != 0)
11011 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11012 r
[1].r_offset
= r
[0].r_offset
+ 4;
11013 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11014 r
[1].r_addend
= r
[0].r_addend
;
11018 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11020 if (PPC_HA (off
) != 0)
11023 bfd_put_32 (htab
->params
->stub_bfd
,
11024 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11026 bfd_put_32 (htab
->params
->stub_bfd
,
11027 LD_R12_0R12
| PPC_LO (off
), loc
);
11032 bfd_put_32 (htab
->params
->stub_bfd
,
11033 LD_R12_0R2
| PPC_LO (off
), loc
);
11038 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11040 if (r2off
== (bfd_vma
) -1)
11042 htab
->stub_error
= TRUE
;
11046 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11049 if (PPC_HA (off
) != 0)
11052 bfd_put_32 (htab
->params
->stub_bfd
,
11053 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11055 bfd_put_32 (htab
->params
->stub_bfd
,
11056 LD_R12_0R12
| PPC_LO (off
), loc
);
11059 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11061 if (PPC_HA (r2off
) != 0)
11065 bfd_put_32 (htab
->params
->stub_bfd
,
11066 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11068 if (PPC_LO (r2off
) != 0)
11072 bfd_put_32 (htab
->params
->stub_bfd
,
11073 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11077 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11079 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11082 case ppc_stub_plt_call
:
11083 case ppc_stub_plt_call_r2save
:
11084 if (stub_entry
->h
!= NULL
11085 && stub_entry
->h
->is_func_descriptor
11086 && stub_entry
->h
->oh
!= NULL
)
11088 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11090 /* If the old-ABI "dot-symbol" is undefined make it weak so
11091 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11092 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
11093 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11094 /* Stop undo_symbol_twiddle changing it back to undefined. */
11095 fh
->was_undefined
= 0;
11098 /* Now build the stub. */
11099 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11100 if (dest
>= (bfd_vma
) -2)
11103 plt
= htab
->elf
.splt
;
11104 if (!htab
->elf
.dynamic_sections_created
11105 || stub_entry
->h
== NULL
11106 || stub_entry
->h
->elf
.dynindx
== -1)
11107 plt
= htab
->elf
.iplt
;
11109 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11111 if (stub_entry
->h
== NULL
11112 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11114 Elf_Internal_Rela rela
;
11117 rela
.r_offset
= dest
;
11119 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11121 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11122 rela
.r_addend
= (stub_entry
->target_value
11123 + stub_entry
->target_section
->output_offset
11124 + stub_entry
->target_section
->output_section
->vma
);
11126 rl
= (htab
->elf
.irelplt
->contents
11127 + (htab
->elf
.irelplt
->reloc_count
++
11128 * sizeof (Elf64_External_Rela
)));
11129 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11130 stub_entry
->plt_ent
->plt
.offset
|= 1;
11134 - elf_gp (plt
->output_section
->owner
)
11135 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11137 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11139 info
->callbacks
->einfo
11140 /* xgettext:c-format */
11141 (_("%P: linkage table error against `%T'\n"),
11142 stub_entry
->h
!= NULL
11143 ? stub_entry
->h
->elf
.root
.root
.string
11145 bfd_set_error (bfd_error_bad_value
);
11146 htab
->stub_error
= TRUE
;
11150 if (htab
->params
->plt_stub_align
!= 0)
11152 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11154 stub_entry
->group
->stub_sec
->size
+= pad
;
11155 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11160 if (info
->emitrelocations
)
11162 r
= get_relocs (stub_entry
->group
->stub_sec
,
11163 ((PPC_HA (off
) != 0)
11165 ? 2 + (htab
->params
->plt_static_chain
11166 && PPC_HA (off
+ 16) == PPC_HA (off
))
11170 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11171 if (bfd_big_endian (info
->output_bfd
))
11172 r
[0].r_offset
+= 2;
11173 r
[0].r_addend
= dest
;
11175 if (stub_entry
->h
!= NULL
11176 && (stub_entry
->h
== htab
->tls_get_addr_fd
11177 || stub_entry
->h
== htab
->tls_get_addr
)
11178 && htab
->params
->tls_get_addr_opt
)
11179 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11181 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11185 case ppc_stub_save_res
:
11193 stub_entry
->group
->stub_sec
->size
+= size
;
11195 if (htab
->params
->emit_stub_syms
)
11197 struct elf_link_hash_entry
*h
;
11200 const char *const stub_str
[] = { "long_branch",
11201 "long_branch_r2off",
11203 "plt_branch_r2off",
11207 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11208 len2
= strlen (stub_entry
->root
.string
);
11209 name
= bfd_malloc (len1
+ len2
+ 2);
11212 memcpy (name
, stub_entry
->root
.string
, 9);
11213 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11214 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11215 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11218 if (h
->root
.type
== bfd_link_hash_new
)
11220 h
->root
.type
= bfd_link_hash_defined
;
11221 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11222 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11223 h
->ref_regular
= 1;
11224 h
->def_regular
= 1;
11225 h
->ref_regular_nonweak
= 1;
11226 h
->forced_local
= 1;
11228 h
->root
.linker_def
= 1;
11235 /* As above, but don't actually build the stub. Just bump offset so
11236 we know stub section sizes, and select plt_branch stubs where
11237 long_branch stubs won't do. */
11240 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11242 struct ppc_stub_hash_entry
*stub_entry
;
11243 struct bfd_link_info
*info
;
11244 struct ppc_link_hash_table
*htab
;
11248 /* Massage our args to the form they really have. */
11249 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11252 htab
= ppc_hash_table (info
);
11256 if (stub_entry
->h
!= NULL
11257 && stub_entry
->h
->save_res
11258 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11259 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11261 /* Don't make stubs to out-of-line register save/restore
11262 functions. Instead, emit copies of the functions. */
11263 stub_entry
->group
->needs_save_res
= 1;
11264 stub_entry
->stub_type
= ppc_stub_save_res
;
11268 if (stub_entry
->stub_type
== ppc_stub_plt_call
11269 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11272 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11273 if (off
>= (bfd_vma
) -2)
11275 plt
= htab
->elf
.splt
;
11276 if (!htab
->elf
.dynamic_sections_created
11277 || stub_entry
->h
== NULL
11278 || stub_entry
->h
->elf
.dynindx
== -1)
11279 plt
= htab
->elf
.iplt
;
11280 off
+= (plt
->output_offset
11281 + plt
->output_section
->vma
11282 - elf_gp (plt
->output_section
->owner
)
11283 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11285 size
= plt_stub_size (htab
, stub_entry
, off
);
11286 if (htab
->params
->plt_stub_align
)
11287 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11288 if (info
->emitrelocations
)
11290 stub_entry
->group
->stub_sec
->reloc_count
11291 += ((PPC_HA (off
) != 0)
11293 ? 2 + (htab
->params
->plt_static_chain
11294 && PPC_HA (off
+ 16) == PPC_HA (off
))
11296 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11301 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11304 bfd_vma local_off
= 0;
11306 off
= (stub_entry
->target_value
11307 + stub_entry
->target_section
->output_offset
11308 + stub_entry
->target_section
->output_section
->vma
);
11309 off
-= (stub_entry
->group
->stub_sec
->size
11310 + stub_entry
->group
->stub_sec
->output_offset
11311 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11313 /* Reset the stub type from the plt variant in case we now
11314 can reach with a shorter stub. */
11315 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11316 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11319 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11321 r2off
= get_r2off (info
, stub_entry
);
11322 if (r2off
== (bfd_vma
) -1)
11324 htab
->stub_error
= TRUE
;
11328 if (PPC_HA (r2off
) != 0)
11330 if (PPC_LO (r2off
) != 0)
11335 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11337 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11338 Do the same for -R objects without function descriptors. */
11339 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11340 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11342 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11344 struct ppc_branch_hash_entry
*br_entry
;
11346 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11347 stub_entry
->root
.string
+ 9,
11349 if (br_entry
== NULL
)
11351 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11352 stub_entry
->root
.string
);
11353 htab
->stub_error
= TRUE
;
11357 if (br_entry
->iter
!= htab
->stub_iteration
)
11359 br_entry
->iter
= htab
->stub_iteration
;
11360 br_entry
->offset
= htab
->brlt
->size
;
11361 htab
->brlt
->size
+= 8;
11363 if (htab
->relbrlt
!= NULL
)
11364 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11365 else if (info
->emitrelocations
)
11367 htab
->brlt
->reloc_count
+= 1;
11368 htab
->brlt
->flags
|= SEC_RELOC
;
11372 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11373 off
= (br_entry
->offset
11374 + htab
->brlt
->output_offset
11375 + htab
->brlt
->output_section
->vma
11376 - elf_gp (htab
->brlt
->output_section
->owner
)
11377 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11379 if (info
->emitrelocations
)
11381 stub_entry
->group
->stub_sec
->reloc_count
11382 += 1 + (PPC_HA (off
) != 0);
11383 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11386 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11389 if (PPC_HA (off
) != 0)
11395 if (PPC_HA (off
) != 0)
11398 if (PPC_HA (r2off
) != 0)
11400 if (PPC_LO (r2off
) != 0)
11404 else if (info
->emitrelocations
)
11406 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11407 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11411 stub_entry
->group
->stub_sec
->size
+= size
;
11415 /* Set up various things so that we can make a list of input sections
11416 for each output section included in the link. Returns -1 on error,
11417 0 when no stubs will be needed, and 1 on success. */
11420 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11424 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11429 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11430 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11431 htab
->sec_info
= bfd_zmalloc (amt
);
11432 if (htab
->sec_info
== NULL
)
11435 /* Set toc_off for com, und, abs and ind sections. */
11436 for (id
= 0; id
< 3; id
++)
11437 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11442 /* Set up for first pass at multitoc partitioning. */
11445 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11447 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11449 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11450 htab
->toc_bfd
= NULL
;
11451 htab
->toc_first_sec
= NULL
;
11454 /* The linker repeatedly calls this function for each TOC input section
11455 and linker generated GOT section. Group input bfds such that the toc
11456 within a group is less than 64k in size. */
11459 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11461 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11462 bfd_vma addr
, off
, limit
;
11467 if (!htab
->second_toc_pass
)
11469 /* Keep track of the first .toc or .got section for this input bfd. */
11470 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11474 htab
->toc_bfd
= isec
->owner
;
11475 htab
->toc_first_sec
= isec
;
11478 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11479 off
= addr
- htab
->toc_curr
;
11480 limit
= 0x80008000;
11481 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11483 if (off
+ isec
->size
> limit
)
11485 addr
= (htab
->toc_first_sec
->output_offset
11486 + htab
->toc_first_sec
->output_section
->vma
);
11487 htab
->toc_curr
= addr
;
11488 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11491 /* toc_curr is the base address of this toc group. Set elf_gp
11492 for the input section to be the offset relative to the
11493 output toc base plus 0x8000. Making the input elf_gp an
11494 offset allows us to move the toc as a whole without
11495 recalculating input elf_gp. */
11496 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11497 off
+= TOC_BASE_OFF
;
11499 /* Die if someone uses a linker script that doesn't keep input
11500 file .toc and .got together. */
11502 && elf_gp (isec
->owner
) != 0
11503 && elf_gp (isec
->owner
) != off
)
11506 elf_gp (isec
->owner
) = off
;
11510 /* During the second pass toc_first_sec points to the start of
11511 a toc group, and toc_curr is used to track the old elf_gp.
11512 We use toc_bfd to ensure we only look at each bfd once. */
11513 if (htab
->toc_bfd
== isec
->owner
)
11515 htab
->toc_bfd
= isec
->owner
;
11517 if (htab
->toc_first_sec
== NULL
11518 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11520 htab
->toc_curr
= elf_gp (isec
->owner
);
11521 htab
->toc_first_sec
= isec
;
11523 addr
= (htab
->toc_first_sec
->output_offset
11524 + htab
->toc_first_sec
->output_section
->vma
);
11525 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11526 elf_gp (isec
->owner
) = off
;
11531 /* Called via elf_link_hash_traverse to merge GOT entries for global
11535 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11537 if (h
->root
.type
== bfd_link_hash_indirect
)
11540 merge_got_entries (&h
->got
.glist
);
11545 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11549 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11551 struct got_entry
*gent
;
11553 if (h
->root
.type
== bfd_link_hash_indirect
)
11556 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11557 if (!gent
->is_indirect
)
11558 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11562 /* Called on the first multitoc pass after the last call to
11563 ppc64_elf_next_toc_section. This function removes duplicate GOT
11567 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11569 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11570 struct bfd
*ibfd
, *ibfd2
;
11571 bfd_boolean done_something
;
11573 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11575 if (!htab
->do_multi_toc
)
11578 /* Merge global sym got entries within a toc group. */
11579 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11581 /* And tlsld_got. */
11582 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11584 struct got_entry
*ent
, *ent2
;
11586 if (!is_ppc64_elf (ibfd
))
11589 ent
= ppc64_tlsld_got (ibfd
);
11590 if (!ent
->is_indirect
11591 && ent
->got
.offset
!= (bfd_vma
) -1)
11593 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11595 if (!is_ppc64_elf (ibfd2
))
11598 ent2
= ppc64_tlsld_got (ibfd2
);
11599 if (!ent2
->is_indirect
11600 && ent2
->got
.offset
!= (bfd_vma
) -1
11601 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11603 ent2
->is_indirect
= TRUE
;
11604 ent2
->got
.ent
= ent
;
11610 /* Zap sizes of got sections. */
11611 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11612 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11613 htab
->got_reli_size
= 0;
11615 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11617 asection
*got
, *relgot
;
11619 if (!is_ppc64_elf (ibfd
))
11622 got
= ppc64_elf_tdata (ibfd
)->got
;
11625 got
->rawsize
= got
->size
;
11627 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11628 relgot
->rawsize
= relgot
->size
;
11633 /* Now reallocate the got, local syms first. We don't need to
11634 allocate section contents again since we never increase size. */
11635 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11637 struct got_entry
**lgot_ents
;
11638 struct got_entry
**end_lgot_ents
;
11639 struct plt_entry
**local_plt
;
11640 struct plt_entry
**end_local_plt
;
11641 unsigned char *lgot_masks
;
11642 bfd_size_type locsymcount
;
11643 Elf_Internal_Shdr
*symtab_hdr
;
11646 if (!is_ppc64_elf (ibfd
))
11649 lgot_ents
= elf_local_got_ents (ibfd
);
11653 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11654 locsymcount
= symtab_hdr
->sh_info
;
11655 end_lgot_ents
= lgot_ents
+ locsymcount
;
11656 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11657 end_local_plt
= local_plt
+ locsymcount
;
11658 lgot_masks
= (unsigned char *) end_local_plt
;
11659 s
= ppc64_elf_tdata (ibfd
)->got
;
11660 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11662 struct got_entry
*ent
;
11664 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11666 unsigned int ent_size
= 8;
11667 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11669 ent
->got
.offset
= s
->size
;
11670 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11675 s
->size
+= ent_size
;
11676 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11678 htab
->elf
.irelplt
->size
+= rel_size
;
11679 htab
->got_reli_size
+= rel_size
;
11681 else if (bfd_link_pic (info
))
11683 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11684 srel
->size
+= rel_size
;
11690 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11692 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11694 struct got_entry
*ent
;
11696 if (!is_ppc64_elf (ibfd
))
11699 ent
= ppc64_tlsld_got (ibfd
);
11700 if (!ent
->is_indirect
11701 && ent
->got
.offset
!= (bfd_vma
) -1)
11703 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11704 ent
->got
.offset
= s
->size
;
11706 if (bfd_link_pic (info
))
11708 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11709 srel
->size
+= sizeof (Elf64_External_Rela
);
11714 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11715 if (!done_something
)
11716 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11720 if (!is_ppc64_elf (ibfd
))
11723 got
= ppc64_elf_tdata (ibfd
)->got
;
11726 done_something
= got
->rawsize
!= got
->size
;
11727 if (done_something
)
11732 if (done_something
)
11733 (*htab
->params
->layout_sections_again
) ();
11735 /* Set up for second pass over toc sections to recalculate elf_gp
11736 on input sections. */
11737 htab
->toc_bfd
= NULL
;
11738 htab
->toc_first_sec
= NULL
;
11739 htab
->second_toc_pass
= TRUE
;
11740 return done_something
;
11743 /* Called after second pass of multitoc partitioning. */
11746 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11748 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11750 /* After the second pass, toc_curr tracks the TOC offset used
11751 for code sections below in ppc64_elf_next_input_section. */
11752 htab
->toc_curr
= TOC_BASE_OFF
;
11755 /* No toc references were found in ISEC. If the code in ISEC makes no
11756 calls, then there's no need to use toc adjusting stubs when branching
11757 into ISEC. Actually, indirect calls from ISEC are OK as they will
11758 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11759 needed, and 2 if a cyclical call-graph was found but no other reason
11760 for a stub was detected. If called from the top level, a return of
11761 2 means the same as a return of 0. */
11764 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11768 /* Mark this section as checked. */
11769 isec
->call_check_done
= 1;
11771 /* We know none of our code bearing sections will need toc stubs. */
11772 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11775 if (isec
->size
== 0)
11778 if (isec
->output_section
== NULL
)
11782 if (isec
->reloc_count
!= 0)
11784 Elf_Internal_Rela
*relstart
, *rel
;
11785 Elf_Internal_Sym
*local_syms
;
11786 struct ppc_link_hash_table
*htab
;
11788 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11789 info
->keep_memory
);
11790 if (relstart
== NULL
)
11793 /* Look for branches to outside of this section. */
11795 htab
= ppc_hash_table (info
);
11799 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11801 enum elf_ppc64_reloc_type r_type
;
11802 unsigned long r_symndx
;
11803 struct elf_link_hash_entry
*h
;
11804 struct ppc_link_hash_entry
*eh
;
11805 Elf_Internal_Sym
*sym
;
11807 struct _opd_sec_data
*opd
;
11811 r_type
= ELF64_R_TYPE (rel
->r_info
);
11812 if (r_type
!= R_PPC64_REL24
11813 && r_type
!= R_PPC64_REL14
11814 && r_type
!= R_PPC64_REL14_BRTAKEN
11815 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11818 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11819 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11826 /* Calls to dynamic lib functions go through a plt call stub
11828 eh
= (struct ppc_link_hash_entry
*) h
;
11830 && (eh
->elf
.plt
.plist
!= NULL
11832 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11838 if (sym_sec
== NULL
)
11839 /* Ignore other undefined symbols. */
11842 /* Assume branches to other sections not included in the
11843 link need stubs too, to cover -R and absolute syms. */
11844 if (sym_sec
->output_section
== NULL
)
11851 sym_value
= sym
->st_value
;
11854 if (h
->root
.type
!= bfd_link_hash_defined
11855 && h
->root
.type
!= bfd_link_hash_defweak
)
11857 sym_value
= h
->root
.u
.def
.value
;
11859 sym_value
+= rel
->r_addend
;
11861 /* If this branch reloc uses an opd sym, find the code section. */
11862 opd
= get_opd_info (sym_sec
);
11865 if (h
== NULL
&& opd
->adjust
!= NULL
)
11869 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11871 /* Assume deleted functions won't ever be called. */
11873 sym_value
+= adjust
;
11876 dest
= opd_entry_value (sym_sec
, sym_value
,
11877 &sym_sec
, NULL
, FALSE
);
11878 if (dest
== (bfd_vma
) -1)
11883 + sym_sec
->output_offset
11884 + sym_sec
->output_section
->vma
);
11886 /* Ignore branch to self. */
11887 if (sym_sec
== isec
)
11890 /* If the called function uses the toc, we need a stub. */
11891 if (sym_sec
->has_toc_reloc
11892 || sym_sec
->makes_toc_func_call
)
11898 /* Assume any branch that needs a long branch stub might in fact
11899 need a plt_branch stub. A plt_branch stub uses r2. */
11900 else if (dest
- (isec
->output_offset
11901 + isec
->output_section
->vma
11902 + rel
->r_offset
) + (1 << 25)
11903 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11911 /* If calling back to a section in the process of being
11912 tested, we can't say for sure that no toc adjusting stubs
11913 are needed, so don't return zero. */
11914 else if (sym_sec
->call_check_in_progress
)
11917 /* Branches to another section that itself doesn't have any TOC
11918 references are OK. Recursively call ourselves to check. */
11919 else if (!sym_sec
->call_check_done
)
11923 /* Mark current section as indeterminate, so that other
11924 sections that call back to current won't be marked as
11926 isec
->call_check_in_progress
= 1;
11927 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11928 isec
->call_check_in_progress
= 0;
11939 if (local_syms
!= NULL
11940 && (elf_symtab_hdr (isec
->owner
).contents
11941 != (unsigned char *) local_syms
))
11943 if (elf_section_data (isec
)->relocs
!= relstart
)
11948 && isec
->map_head
.s
!= NULL
11949 && (strcmp (isec
->output_section
->name
, ".init") == 0
11950 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11952 if (isec
->map_head
.s
->has_toc_reloc
11953 || isec
->map_head
.s
->makes_toc_func_call
)
11955 else if (!isec
->map_head
.s
->call_check_done
)
11958 isec
->call_check_in_progress
= 1;
11959 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11960 isec
->call_check_in_progress
= 0;
11967 isec
->makes_toc_func_call
= 1;
11972 /* The linker repeatedly calls this function for each input section,
11973 in the order that input sections are linked into output sections.
11974 Build lists of input sections to determine groupings between which
11975 we may insert linker stubs. */
11978 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11980 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11985 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11986 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
11988 /* This happens to make the list in reverse order,
11989 which is what we want. */
11990 htab
->sec_info
[isec
->id
].u
.list
11991 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
11992 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
11995 if (htab
->multi_toc_needed
)
11997 /* Analyse sections that aren't already flagged as needing a
11998 valid toc pointer. Exclude .fixup for the linux kernel.
11999 .fixup contains branches, but only back to the function that
12000 hit an exception. */
12001 if (!(isec
->has_toc_reloc
12002 || (isec
->flags
& SEC_CODE
) == 0
12003 || strcmp (isec
->name
, ".fixup") == 0
12004 || isec
->call_check_done
))
12006 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12009 /* Make all sections use the TOC assigned for this object file.
12010 This will be wrong for pasted sections; We fix that in
12011 check_pasted_section(). */
12012 if (elf_gp (isec
->owner
) != 0)
12013 htab
->toc_curr
= elf_gp (isec
->owner
);
12016 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12020 /* Check that all .init and .fini sections use the same toc, if they
12021 have toc relocs. */
12024 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12026 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12030 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12031 bfd_vma toc_off
= 0;
12034 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12035 if (i
->has_toc_reloc
)
12038 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12039 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12044 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12045 if (i
->makes_toc_func_call
)
12047 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12051 /* Make sure the whole pasted function uses the same toc offset. */
12053 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12054 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12060 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12062 return (check_pasted_section (info
, ".init")
12063 & check_pasted_section (info
, ".fini"));
12066 /* See whether we can group stub sections together. Grouping stub
12067 sections may result in fewer stubs. More importantly, we need to
12068 put all .init* and .fini* stubs at the beginning of the .init or
12069 .fini output sections respectively, because glibc splits the
12070 _init and _fini functions into multiple parts. Putting a stub in
12071 the middle of a function is not a good idea. */
12074 group_sections (struct bfd_link_info
*info
,
12075 bfd_size_type stub_group_size
,
12076 bfd_boolean stubs_always_before_branch
)
12078 struct ppc_link_hash_table
*htab
;
12080 bfd_boolean suppress_size_errors
;
12082 htab
= ppc_hash_table (info
);
12086 suppress_size_errors
= FALSE
;
12087 if (stub_group_size
== 1)
12089 /* Default values. */
12090 if (stubs_always_before_branch
)
12091 stub_group_size
= 0x1e00000;
12093 stub_group_size
= 0x1c00000;
12094 suppress_size_errors
= TRUE
;
12097 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12101 if (osec
->id
>= htab
->sec_info_arr_size
)
12104 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12105 while (tail
!= NULL
)
12109 bfd_size_type total
;
12110 bfd_boolean big_sec
;
12112 struct map_stub
*group
;
12113 bfd_size_type group_size
;
12116 total
= tail
->size
;
12117 group_size
= (ppc64_elf_section_data (tail
) != NULL
12118 && ppc64_elf_section_data (tail
)->has_14bit_branch
12119 ? stub_group_size
>> 10 : stub_group_size
);
12121 big_sec
= total
> group_size
;
12122 if (big_sec
&& !suppress_size_errors
)
12123 /* xgettext:c-format */
12124 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12125 tail
->owner
, tail
);
12126 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12128 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12129 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12130 < (ppc64_elf_section_data (prev
) != NULL
12131 && ppc64_elf_section_data (prev
)->has_14bit_branch
12132 ? (group_size
= stub_group_size
>> 10) : group_size
))
12133 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12136 /* OK, the size from the start of CURR to the end is less
12137 than group_size and thus can be handled by one stub
12138 section. (or the tail section is itself larger than
12139 group_size, in which case we may be toast.) We should
12140 really be keeping track of the total size of stubs added
12141 here, as stubs contribute to the final output section
12142 size. That's a little tricky, and this way will only
12143 break if stubs added make the total size more than 2^25,
12144 ie. for the default stub_group_size, if stubs total more
12145 than 2097152 bytes, or nearly 75000 plt call stubs. */
12146 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12149 group
->link_sec
= curr
;
12150 group
->stub_sec
= NULL
;
12151 group
->needs_save_res
= 0;
12152 group
->next
= htab
->group
;
12153 htab
->group
= group
;
12156 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12157 /* Set up this stub group. */
12158 htab
->sec_info
[tail
->id
].u
.group
= group
;
12160 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12162 /* But wait, there's more! Input sections up to group_size
12163 bytes before the stub section can be handled by it too.
12164 Don't do this if we have a really large section after the
12165 stubs, as adding more stubs increases the chance that
12166 branches may not reach into the stub section. */
12167 if (!stubs_always_before_branch
&& !big_sec
)
12170 while (prev
!= NULL
12171 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12172 < (ppc64_elf_section_data (prev
) != NULL
12173 && ppc64_elf_section_data (prev
)->has_14bit_branch
12174 ? (group_size
= stub_group_size
>> 10) : group_size
))
12175 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12178 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12179 htab
->sec_info
[tail
->id
].u
.group
= group
;
12188 static const unsigned char glink_eh_frame_cie
[] =
12190 0, 0, 0, 16, /* length. */
12191 0, 0, 0, 0, /* id. */
12192 1, /* CIE version. */
12193 'z', 'R', 0, /* Augmentation string. */
12194 4, /* Code alignment. */
12195 0x78, /* Data alignment. */
12197 1, /* Augmentation size. */
12198 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12199 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
12203 /* Stripping output sections is normally done before dynamic section
12204 symbols have been allocated. This function is called later, and
12205 handles cases like htab->brlt which is mapped to its own output
12209 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12211 if (isec
->size
== 0
12212 && isec
->output_section
->size
== 0
12213 && !(isec
->output_section
->flags
& SEC_KEEP
)
12214 && !bfd_section_removed_from_list (info
->output_bfd
,
12215 isec
->output_section
)
12216 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12218 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12219 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12220 info
->output_bfd
->section_count
--;
12224 /* Determine and set the size of the stub section for a final link.
12226 The basic idea here is to examine all the relocations looking for
12227 PC-relative calls to a target that is unreachable with a "bl"
12231 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12233 bfd_size_type stub_group_size
;
12234 bfd_boolean stubs_always_before_branch
;
12235 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12240 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12241 htab
->params
->plt_thread_safe
= 1;
12242 if (!htab
->opd_abi
)
12243 htab
->params
->plt_thread_safe
= 0;
12244 else if (htab
->params
->plt_thread_safe
== -1)
12246 static const char *const thread_starter
[] =
12250 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12252 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12253 "mq_notify", "create_timer",
12258 "GOMP_parallel_start",
12259 "GOMP_parallel_loop_static",
12260 "GOMP_parallel_loop_static_start",
12261 "GOMP_parallel_loop_dynamic",
12262 "GOMP_parallel_loop_dynamic_start",
12263 "GOMP_parallel_loop_guided",
12264 "GOMP_parallel_loop_guided_start",
12265 "GOMP_parallel_loop_runtime",
12266 "GOMP_parallel_loop_runtime_start",
12267 "GOMP_parallel_sections",
12268 "GOMP_parallel_sections_start",
12274 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12276 struct elf_link_hash_entry
*h
;
12277 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12278 FALSE
, FALSE
, TRUE
);
12279 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12280 if (htab
->params
->plt_thread_safe
)
12284 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12285 if (htab
->params
->group_size
< 0)
12286 stub_group_size
= -htab
->params
->group_size
;
12288 stub_group_size
= htab
->params
->group_size
;
12290 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12293 #define STUB_SHRINK_ITER 20
12294 /* Loop until no stubs added. After iteration 20 of this loop we may
12295 exit on a stub section shrinking. This is to break out of a
12296 pathological case where adding stubs on one iteration decreases
12297 section gaps (perhaps due to alignment), which then requires
12298 fewer or smaller stubs on the next iteration. */
12303 unsigned int bfd_indx
;
12304 struct map_stub
*group
;
12305 asection
*stub_sec
;
12307 htab
->stub_iteration
+= 1;
12309 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12311 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12313 Elf_Internal_Shdr
*symtab_hdr
;
12315 Elf_Internal_Sym
*local_syms
= NULL
;
12317 if (!is_ppc64_elf (input_bfd
))
12320 /* We'll need the symbol table in a second. */
12321 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12322 if (symtab_hdr
->sh_info
== 0)
12325 /* Walk over each section attached to the input bfd. */
12326 for (section
= input_bfd
->sections
;
12328 section
= section
->next
)
12330 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12332 /* If there aren't any relocs, then there's nothing more
12334 if ((section
->flags
& SEC_RELOC
) == 0
12335 || (section
->flags
& SEC_ALLOC
) == 0
12336 || (section
->flags
& SEC_LOAD
) == 0
12337 || (section
->flags
& SEC_CODE
) == 0
12338 || section
->reloc_count
== 0)
12341 /* If this section is a link-once section that will be
12342 discarded, then don't create any stubs. */
12343 if (section
->output_section
== NULL
12344 || section
->output_section
->owner
!= info
->output_bfd
)
12347 /* Get the relocs. */
12349 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12350 info
->keep_memory
);
12351 if (internal_relocs
== NULL
)
12352 goto error_ret_free_local
;
12354 /* Now examine each relocation. */
12355 irela
= internal_relocs
;
12356 irelaend
= irela
+ section
->reloc_count
;
12357 for (; irela
< irelaend
; irela
++)
12359 enum elf_ppc64_reloc_type r_type
;
12360 unsigned int r_indx
;
12361 enum ppc_stub_type stub_type
;
12362 struct ppc_stub_hash_entry
*stub_entry
;
12363 asection
*sym_sec
, *code_sec
;
12364 bfd_vma sym_value
, code_value
;
12365 bfd_vma destination
;
12366 unsigned long local_off
;
12367 bfd_boolean ok_dest
;
12368 struct ppc_link_hash_entry
*hash
;
12369 struct ppc_link_hash_entry
*fdh
;
12370 struct elf_link_hash_entry
*h
;
12371 Elf_Internal_Sym
*sym
;
12373 const asection
*id_sec
;
12374 struct _opd_sec_data
*opd
;
12375 struct plt_entry
*plt_ent
;
12377 r_type
= ELF64_R_TYPE (irela
->r_info
);
12378 r_indx
= ELF64_R_SYM (irela
->r_info
);
12380 if (r_type
>= R_PPC64_max
)
12382 bfd_set_error (bfd_error_bad_value
);
12383 goto error_ret_free_internal
;
12386 /* Only look for stubs on branch instructions. */
12387 if (r_type
!= R_PPC64_REL24
12388 && r_type
!= R_PPC64_REL14
12389 && r_type
!= R_PPC64_REL14_BRTAKEN
12390 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12393 /* Now determine the call target, its name, value,
12395 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12396 r_indx
, input_bfd
))
12397 goto error_ret_free_internal
;
12398 hash
= (struct ppc_link_hash_entry
*) h
;
12405 sym_value
= sym
->st_value
;
12406 if (sym_sec
!= NULL
12407 && sym_sec
->output_section
!= NULL
)
12410 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12411 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12413 sym_value
= hash
->elf
.root
.u
.def
.value
;
12414 if (sym_sec
->output_section
!= NULL
)
12417 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12418 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12420 /* Recognise an old ABI func code entry sym, and
12421 use the func descriptor sym instead if it is
12423 if (hash
->elf
.root
.root
.string
[0] == '.'
12424 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12426 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12427 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12429 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12430 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12431 if (sym_sec
->output_section
!= NULL
)
12440 bfd_set_error (bfd_error_bad_value
);
12441 goto error_ret_free_internal
;
12448 sym_value
+= irela
->r_addend
;
12449 destination
= (sym_value
12450 + sym_sec
->output_offset
12451 + sym_sec
->output_section
->vma
);
12452 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12457 code_sec
= sym_sec
;
12458 code_value
= sym_value
;
12459 opd
= get_opd_info (sym_sec
);
12464 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12466 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12469 code_value
+= adjust
;
12470 sym_value
+= adjust
;
12472 dest
= opd_entry_value (sym_sec
, sym_value
,
12473 &code_sec
, &code_value
, FALSE
);
12474 if (dest
!= (bfd_vma
) -1)
12476 destination
= dest
;
12479 /* Fixup old ABI sym to point at code
12481 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12482 hash
->elf
.root
.u
.def
.section
= code_sec
;
12483 hash
->elf
.root
.u
.def
.value
= code_value
;
12488 /* Determine what (if any) linker stub is needed. */
12490 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12491 &plt_ent
, destination
,
12494 if (stub_type
!= ppc_stub_plt_call
)
12496 /* Check whether we need a TOC adjusting stub.
12497 Since the linker pastes together pieces from
12498 different object files when creating the
12499 _init and _fini functions, it may be that a
12500 call to what looks like a local sym is in
12501 fact a call needing a TOC adjustment. */
12502 if (code_sec
!= NULL
12503 && code_sec
->output_section
!= NULL
12504 && (htab
->sec_info
[code_sec
->id
].toc_off
12505 != htab
->sec_info
[section
->id
].toc_off
)
12506 && (code_sec
->has_toc_reloc
12507 || code_sec
->makes_toc_func_call
))
12508 stub_type
= ppc_stub_long_branch_r2off
;
12511 if (stub_type
== ppc_stub_none
)
12514 /* __tls_get_addr calls might be eliminated. */
12515 if (stub_type
!= ppc_stub_plt_call
12517 && (hash
== htab
->tls_get_addr
12518 || hash
== htab
->tls_get_addr_fd
)
12519 && section
->has_tls_reloc
12520 && irela
!= internal_relocs
)
12522 /* Get tls info. */
12523 unsigned char *tls_mask
;
12525 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12526 irela
- 1, input_bfd
))
12527 goto error_ret_free_internal
;
12528 if (*tls_mask
!= 0)
12532 if (stub_type
== ppc_stub_plt_call
12533 && irela
+ 1 < irelaend
12534 && irela
[1].r_offset
== irela
->r_offset
+ 4
12535 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12537 if (!tocsave_find (htab
, INSERT
,
12538 &local_syms
, irela
+ 1, input_bfd
))
12539 goto error_ret_free_internal
;
12541 else if (stub_type
== ppc_stub_plt_call
)
12542 stub_type
= ppc_stub_plt_call_r2save
;
12544 /* Support for grouping stub sections. */
12545 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12547 /* Get the name of this stub. */
12548 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12550 goto error_ret_free_internal
;
12552 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12553 stub_name
, FALSE
, FALSE
);
12554 if (stub_entry
!= NULL
)
12556 /* The proper stub has already been created. */
12558 if (stub_type
== ppc_stub_plt_call_r2save
)
12559 stub_entry
->stub_type
= stub_type
;
12563 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12564 if (stub_entry
== NULL
)
12567 error_ret_free_internal
:
12568 if (elf_section_data (section
)->relocs
== NULL
)
12569 free (internal_relocs
);
12570 error_ret_free_local
:
12571 if (local_syms
!= NULL
12572 && (symtab_hdr
->contents
12573 != (unsigned char *) local_syms
))
12578 stub_entry
->stub_type
= stub_type
;
12579 if (stub_type
!= ppc_stub_plt_call
12580 && stub_type
!= ppc_stub_plt_call_r2save
)
12582 stub_entry
->target_value
= code_value
;
12583 stub_entry
->target_section
= code_sec
;
12587 stub_entry
->target_value
= sym_value
;
12588 stub_entry
->target_section
= sym_sec
;
12590 stub_entry
->h
= hash
;
12591 stub_entry
->plt_ent
= plt_ent
;
12592 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12594 if (stub_entry
->h
!= NULL
)
12595 htab
->stub_globals
+= 1;
12598 /* We're done with the internal relocs, free them. */
12599 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12600 free (internal_relocs
);
12603 if (local_syms
!= NULL
12604 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12606 if (!info
->keep_memory
)
12609 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12613 /* We may have added some stubs. Find out the new size of the
12615 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12617 stub_sec
= stub_sec
->next
)
12618 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12620 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12621 || stub_sec
->rawsize
< stub_sec
->size
)
12622 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12623 stub_sec
->rawsize
= stub_sec
->size
;
12624 stub_sec
->size
= 0;
12625 stub_sec
->reloc_count
= 0;
12626 stub_sec
->flags
&= ~SEC_RELOC
;
12629 htab
->brlt
->size
= 0;
12630 htab
->brlt
->reloc_count
= 0;
12631 htab
->brlt
->flags
&= ~SEC_RELOC
;
12632 if (htab
->relbrlt
!= NULL
)
12633 htab
->relbrlt
->size
= 0;
12635 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12637 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12638 if (group
->needs_save_res
)
12639 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12641 if (info
->emitrelocations
12642 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12644 htab
->glink
->reloc_count
= 1;
12645 htab
->glink
->flags
|= SEC_RELOC
;
12648 if (htab
->glink_eh_frame
!= NULL
12649 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12650 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12652 size_t size
= 0, align
;
12654 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12656 stub_sec
= stub_sec
->next
)
12657 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12659 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12662 size
+= sizeof (glink_eh_frame_cie
);
12664 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12666 size
= (size
+ align
) & ~align
;
12667 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12668 htab
->glink_eh_frame
->size
= size
;
12671 if (htab
->params
->plt_stub_align
!= 0)
12672 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12674 stub_sec
= stub_sec
->next
)
12675 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12676 stub_sec
->size
= ((stub_sec
->size
12677 + (1 << htab
->params
->plt_stub_align
) - 1)
12678 & -(1 << htab
->params
->plt_stub_align
));
12680 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12682 stub_sec
= stub_sec
->next
)
12683 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12684 && stub_sec
->rawsize
!= stub_sec
->size
12685 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12686 || stub_sec
->rawsize
< stub_sec
->size
))
12689 if (stub_sec
== NULL
12690 && (htab
->glink_eh_frame
== NULL
12691 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12694 /* Ask the linker to do its stuff. */
12695 (*htab
->params
->layout_sections_again
) ();
12698 if (htab
->glink_eh_frame
!= NULL
12699 && htab
->glink_eh_frame
->size
!= 0)
12702 bfd_byte
*p
, *last_fde
;
12703 size_t last_fde_len
, size
, align
, pad
;
12704 asection
*stub_sec
;
12706 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12709 htab
->glink_eh_frame
->contents
= p
;
12712 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12713 /* CIE length (rewrite in case little-endian). */
12714 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12715 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12716 p
+= sizeof (glink_eh_frame_cie
);
12718 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12720 stub_sec
= stub_sec
->next
)
12721 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12726 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12729 val
= p
- htab
->glink_eh_frame
->contents
;
12730 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12732 /* Offset to stub section, written later. */
12734 /* stub section size. */
12735 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12737 /* Augmentation. */
12742 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12747 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12750 val
= p
- htab
->glink_eh_frame
->contents
;
12751 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12753 /* Offset to .glink, written later. */
12756 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12758 /* Augmentation. */
12761 *p
++ = DW_CFA_advance_loc
+ 1;
12762 *p
++ = DW_CFA_register
;
12764 *p
++ = htab
->opd_abi
? 12 : 0;
12765 *p
++ = DW_CFA_advance_loc
+ 4;
12766 *p
++ = DW_CFA_restore_extended
;
12769 /* Subsume any padding into the last FDE if user .eh_frame
12770 sections are aligned more than glink_eh_frame. Otherwise any
12771 zero padding will be seen as a terminator. */
12772 size
= p
- htab
->glink_eh_frame
->contents
;
12774 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12776 pad
= ((size
+ align
) & ~align
) - size
;
12777 htab
->glink_eh_frame
->size
= size
+ pad
;
12778 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12781 maybe_strip_output (info
, htab
->brlt
);
12782 if (htab
->glink_eh_frame
!= NULL
)
12783 maybe_strip_output (info
, htab
->glink_eh_frame
);
12788 /* Called after we have determined section placement. If sections
12789 move, we'll be called again. Provide a value for TOCstart. */
12792 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12795 bfd_vma TOCstart
, adjust
;
12799 struct elf_link_hash_entry
*h
;
12800 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12802 if (is_elf_hash_table (htab
)
12803 && htab
->hgot
!= NULL
)
12807 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12808 if (is_elf_hash_table (htab
))
12812 && h
->root
.type
== bfd_link_hash_defined
12813 && !h
->root
.linker_def
12814 && (!is_elf_hash_table (htab
)
12815 || h
->def_regular
))
12817 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12818 + h
->root
.u
.def
.section
->output_offset
12819 + h
->root
.u
.def
.section
->output_section
->vma
);
12820 _bfd_set_gp_value (obfd
, TOCstart
);
12825 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12826 order. The TOC starts where the first of these sections starts. */
12827 s
= bfd_get_section_by_name (obfd
, ".got");
12828 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12829 s
= bfd_get_section_by_name (obfd
, ".toc");
12830 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12831 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12832 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12833 s
= bfd_get_section_by_name (obfd
, ".plt");
12834 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12836 /* This may happen for
12837 o references to TOC base (SYM@toc / TOC[tc0]) without a
12839 o bad linker script
12840 o --gc-sections and empty TOC sections
12842 FIXME: Warn user? */
12844 /* Look for a likely section. We probably won't even be
12846 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12847 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12849 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12852 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12853 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12854 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12857 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12858 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12862 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12863 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12869 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12871 /* Force alignment. */
12872 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12873 TOCstart
-= adjust
;
12874 _bfd_set_gp_value (obfd
, TOCstart
);
12876 if (info
!= NULL
&& s
!= NULL
)
12878 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12882 if (htab
->elf
.hgot
!= NULL
)
12884 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12885 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12890 struct bfd_link_hash_entry
*bh
= NULL
;
12891 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12892 s
, TOC_BASE_OFF
- adjust
,
12893 NULL
, FALSE
, FALSE
, &bh
);
12899 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12900 write out any global entry stubs. */
12903 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12905 struct bfd_link_info
*info
;
12906 struct ppc_link_hash_table
*htab
;
12907 struct plt_entry
*pent
;
12910 if (h
->root
.type
== bfd_link_hash_indirect
)
12913 if (!h
->pointer_equality_needed
)
12916 if (h
->def_regular
)
12920 htab
= ppc_hash_table (info
);
12925 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12926 if (pent
->plt
.offset
!= (bfd_vma
) -1
12927 && pent
->addend
== 0)
12933 p
= s
->contents
+ h
->root
.u
.def
.value
;
12934 plt
= htab
->elf
.splt
;
12935 if (!htab
->elf
.dynamic_sections_created
12936 || h
->dynindx
== -1)
12937 plt
= htab
->elf
.iplt
;
12938 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12939 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12941 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12943 info
->callbacks
->einfo
12944 (_("%P: linkage table error against `%T'\n"),
12945 h
->root
.root
.string
);
12946 bfd_set_error (bfd_error_bad_value
);
12947 htab
->stub_error
= TRUE
;
12950 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12951 if (htab
->params
->emit_stub_syms
)
12953 size_t len
= strlen (h
->root
.root
.string
);
12954 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12959 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12960 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12963 if (h
->root
.type
== bfd_link_hash_new
)
12965 h
->root
.type
= bfd_link_hash_defined
;
12966 h
->root
.u
.def
.section
= s
;
12967 h
->root
.u
.def
.value
= p
- s
->contents
;
12968 h
->ref_regular
= 1;
12969 h
->def_regular
= 1;
12970 h
->ref_regular_nonweak
= 1;
12971 h
->forced_local
= 1;
12973 h
->root
.linker_def
= 1;
12977 if (PPC_HA (off
) != 0)
12979 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12982 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12984 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12986 bfd_put_32 (s
->owner
, BCTR
, p
);
12992 /* Build all the stubs associated with the current output file.
12993 The stubs are kept in a hash table attached to the main linker
12994 hash table. This function is called via gldelf64ppc_finish. */
12997 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13000 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13001 struct map_stub
*group
;
13002 asection
*stub_sec
;
13004 int stub_sec_count
= 0;
13009 /* Allocate memory to hold the linker stubs. */
13010 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13012 stub_sec
= stub_sec
->next
)
13013 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
13014 && stub_sec
->size
!= 0)
13016 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13017 if (stub_sec
->contents
== NULL
)
13019 stub_sec
->size
= 0;
13022 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13027 /* Build the .glink plt call stub. */
13028 if (htab
->params
->emit_stub_syms
)
13030 struct elf_link_hash_entry
*h
;
13031 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13032 TRUE
, FALSE
, FALSE
);
13035 if (h
->root
.type
== bfd_link_hash_new
)
13037 h
->root
.type
= bfd_link_hash_defined
;
13038 h
->root
.u
.def
.section
= htab
->glink
;
13039 h
->root
.u
.def
.value
= 8;
13040 h
->ref_regular
= 1;
13041 h
->def_regular
= 1;
13042 h
->ref_regular_nonweak
= 1;
13043 h
->forced_local
= 1;
13045 h
->root
.linker_def
= 1;
13048 plt0
= (htab
->elf
.splt
->output_section
->vma
13049 + htab
->elf
.splt
->output_offset
13051 if (info
->emitrelocations
)
13053 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13056 r
->r_offset
= (htab
->glink
->output_offset
13057 + htab
->glink
->output_section
->vma
);
13058 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13059 r
->r_addend
= plt0
;
13061 p
= htab
->glink
->contents
;
13062 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13063 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13067 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13069 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13071 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13073 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13075 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13077 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13079 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13081 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13083 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13085 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13090 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13092 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13094 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13096 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13098 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13100 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13102 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13104 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13106 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13108 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13110 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13112 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13115 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13117 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13119 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13123 /* Build the .glink lazy link call stubs. */
13125 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13131 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13136 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13138 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13143 bfd_put_32 (htab
->glink
->owner
,
13144 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13149 /* Build .glink global entry stubs. */
13150 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13151 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13154 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13156 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13158 if (htab
->brlt
->contents
== NULL
)
13161 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13163 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13164 htab
->relbrlt
->size
);
13165 if (htab
->relbrlt
->contents
== NULL
)
13169 /* Build the stubs as directed by the stub hash table. */
13170 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13172 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13173 if (group
->needs_save_res
)
13175 stub_sec
= group
->stub_sec
;
13176 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13178 if (htab
->params
->emit_stub_syms
)
13182 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13183 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13186 stub_sec
->size
+= htab
->sfpr
->size
;
13189 if (htab
->relbrlt
!= NULL
)
13190 htab
->relbrlt
->reloc_count
= 0;
13192 if (htab
->params
->plt_stub_align
!= 0)
13193 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13195 stub_sec
= stub_sec
->next
)
13196 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13197 stub_sec
->size
= ((stub_sec
->size
13198 + (1 << htab
->params
->plt_stub_align
) - 1)
13199 & -(1 << htab
->params
->plt_stub_align
));
13201 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13203 stub_sec
= stub_sec
->next
)
13204 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13206 stub_sec_count
+= 1;
13207 if (stub_sec
->rawsize
!= stub_sec
->size
13208 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13209 || stub_sec
->rawsize
< stub_sec
->size
))
13213 /* Note that the glink_eh_frame check here is not only testing that
13214 the generated size matched the calculated size but also that
13215 bfd_elf_discard_info didn't make any changes to the section. */
13216 if (stub_sec
!= NULL
13217 || (htab
->glink_eh_frame
!= NULL
13218 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13220 htab
->stub_error
= TRUE
;
13221 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13224 if (htab
->stub_error
)
13229 *stats
= bfd_malloc (500);
13230 if (*stats
== NULL
)
13233 sprintf (*stats
, _("linker stubs in %u group%s\n"
13235 " toc adjust %lu\n"
13236 " long branch %lu\n"
13237 " long toc adj %lu\n"
13239 " plt call toc %lu\n"
13240 " global entry %lu"),
13242 stub_sec_count
== 1 ? "" : "s",
13243 htab
->stub_count
[ppc_stub_long_branch
- 1],
13244 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13245 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13246 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13247 htab
->stub_count
[ppc_stub_plt_call
- 1],
13248 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13249 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13254 /* This function undoes the changes made by add_symbol_adjust. */
13257 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
13259 struct ppc_link_hash_entry
*eh
;
13261 if (h
->root
.type
== bfd_link_hash_indirect
)
13264 eh
= (struct ppc_link_hash_entry
*) h
;
13265 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
13268 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
13273 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
13275 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13278 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
13281 /* What to do when ld finds relocations against symbols defined in
13282 discarded sections. */
13284 static unsigned int
13285 ppc64_elf_action_discarded (asection
*sec
)
13287 if (strcmp (".opd", sec
->name
) == 0)
13290 if (strcmp (".toc", sec
->name
) == 0)
13293 if (strcmp (".toc1", sec
->name
) == 0)
13296 return _bfd_elf_default_action_discarded (sec
);
13299 /* The RELOCATE_SECTION function is called by the ELF backend linker
13300 to handle the relocations for a section.
13302 The relocs are always passed as Rela structures; if the section
13303 actually uses Rel structures, the r_addend field will always be
13306 This function is responsible for adjust the section contents as
13307 necessary, and (if using Rela relocs and generating a
13308 relocatable output file) adjusting the reloc addend as
13311 This function does not have to worry about setting the reloc
13312 address or the reloc symbol index.
13314 LOCAL_SYMS is a pointer to the swapped in local symbols.
13316 LOCAL_SECTIONS is an array giving the section in the input file
13317 corresponding to the st_shndx field of each local symbol.
13319 The global hash table entry for the global symbols can be found
13320 via elf_sym_hashes (input_bfd).
13322 When generating relocatable output, this function must handle
13323 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13324 going to be the section symbol corresponding to the output
13325 section, which means that the addend must be adjusted
13329 ppc64_elf_relocate_section (bfd
*output_bfd
,
13330 struct bfd_link_info
*info
,
13332 asection
*input_section
,
13333 bfd_byte
*contents
,
13334 Elf_Internal_Rela
*relocs
,
13335 Elf_Internal_Sym
*local_syms
,
13336 asection
**local_sections
)
13338 struct ppc_link_hash_table
*htab
;
13339 Elf_Internal_Shdr
*symtab_hdr
;
13340 struct elf_link_hash_entry
**sym_hashes
;
13341 Elf_Internal_Rela
*rel
;
13342 Elf_Internal_Rela
*wrel
;
13343 Elf_Internal_Rela
*relend
;
13344 Elf_Internal_Rela outrel
;
13346 struct got_entry
**local_got_ents
;
13348 bfd_boolean ret
= TRUE
;
13349 bfd_boolean is_opd
;
13350 /* Assume 'at' branch hints. */
13351 bfd_boolean is_isa_v2
= TRUE
;
13352 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13354 /* Initialize howto table if needed. */
13355 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13358 htab
= ppc_hash_table (info
);
13362 /* Don't relocate stub sections. */
13363 if (input_section
->owner
== htab
->params
->stub_bfd
)
13366 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13368 local_got_ents
= elf_local_got_ents (input_bfd
);
13369 TOCstart
= elf_gp (output_bfd
);
13370 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13371 sym_hashes
= elf_sym_hashes (input_bfd
);
13372 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13374 rel
= wrel
= relocs
;
13375 relend
= relocs
+ input_section
->reloc_count
;
13376 for (; rel
< relend
; wrel
++, rel
++)
13378 enum elf_ppc64_reloc_type r_type
;
13380 bfd_reloc_status_type r
;
13381 Elf_Internal_Sym
*sym
;
13383 struct elf_link_hash_entry
*h_elf
;
13384 struct ppc_link_hash_entry
*h
;
13385 struct ppc_link_hash_entry
*fdh
;
13386 const char *sym_name
;
13387 unsigned long r_symndx
, toc_symndx
;
13388 bfd_vma toc_addend
;
13389 unsigned char tls_mask
, tls_gd
, tls_type
;
13390 unsigned char sym_type
;
13391 bfd_vma relocation
;
13392 bfd_boolean unresolved_reloc
;
13393 bfd_boolean warned
;
13394 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13397 struct ppc_stub_hash_entry
*stub_entry
;
13398 bfd_vma max_br_offset
;
13400 Elf_Internal_Rela orig_rel
;
13401 reloc_howto_type
*howto
;
13402 struct reloc_howto_struct alt_howto
;
13407 r_type
= ELF64_R_TYPE (rel
->r_info
);
13408 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13410 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13411 symbol of the previous ADDR64 reloc. The symbol gives us the
13412 proper TOC base to use. */
13413 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13415 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13417 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13423 unresolved_reloc
= FALSE
;
13426 if (r_symndx
< symtab_hdr
->sh_info
)
13428 /* It's a local symbol. */
13429 struct _opd_sec_data
*opd
;
13431 sym
= local_syms
+ r_symndx
;
13432 sec
= local_sections
[r_symndx
];
13433 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13434 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13435 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13436 opd
= get_opd_info (sec
);
13437 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13439 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13445 /* If this is a relocation against the opd section sym
13446 and we have edited .opd, adjust the reloc addend so
13447 that ld -r and ld --emit-relocs output is correct.
13448 If it is a reloc against some other .opd symbol,
13449 then the symbol value will be adjusted later. */
13450 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13451 rel
->r_addend
+= adjust
;
13453 relocation
+= adjust
;
13459 bfd_boolean ignored
;
13461 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13462 r_symndx
, symtab_hdr
, sym_hashes
,
13463 h_elf
, sec
, relocation
,
13464 unresolved_reloc
, warned
, ignored
);
13465 sym_name
= h_elf
->root
.root
.string
;
13466 sym_type
= h_elf
->type
;
13468 && sec
->owner
== output_bfd
13469 && strcmp (sec
->name
, ".opd") == 0)
13471 /* This is a symbol defined in a linker script. All
13472 such are defined in output sections, even those
13473 defined by simple assignment from a symbol defined in
13474 an input section. Transfer the symbol to an
13475 appropriate input .opd section, so that a branch to
13476 this symbol will be mapped to the location specified
13477 by the opd entry. */
13478 struct bfd_link_order
*lo
;
13479 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13480 if (lo
->type
== bfd_indirect_link_order
)
13482 asection
*isec
= lo
->u
.indirect
.section
;
13483 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13484 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13487 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13488 h_elf
->root
.u
.def
.section
= isec
;
13495 h
= (struct ppc_link_hash_entry
*) h_elf
;
13497 if (sec
!= NULL
&& discarded_section (sec
))
13499 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13500 input_bfd
, input_section
,
13501 contents
+ rel
->r_offset
);
13502 wrel
->r_offset
= rel
->r_offset
;
13504 wrel
->r_addend
= 0;
13506 /* For ld -r, remove relocations in debug sections against
13507 sections defined in discarded sections. Not done for
13508 non-debug to preserve relocs in .eh_frame which the
13509 eh_frame editing code expects to be present. */
13510 if (bfd_link_relocatable (info
)
13511 && (input_section
->flags
& SEC_DEBUGGING
))
13517 if (bfd_link_relocatable (info
))
13520 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13522 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13523 sec
= bfd_abs_section_ptr
;
13524 unresolved_reloc
= FALSE
;
13527 /* TLS optimizations. Replace instruction sequences and relocs
13528 based on information we collected in tls_optimize. We edit
13529 RELOCS so that --emit-relocs will output something sensible
13530 for the final instruction stream. */
13535 tls_mask
= h
->tls_mask
;
13536 else if (local_got_ents
!= NULL
)
13538 struct plt_entry
**local_plt
= (struct plt_entry
**)
13539 (local_got_ents
+ symtab_hdr
->sh_info
);
13540 unsigned char *lgot_masks
= (unsigned char *)
13541 (local_plt
+ symtab_hdr
->sh_info
);
13542 tls_mask
= lgot_masks
[r_symndx
];
13545 && (r_type
== R_PPC64_TLS
13546 || r_type
== R_PPC64_TLSGD
13547 || r_type
== R_PPC64_TLSLD
))
13549 /* Check for toc tls entries. */
13550 unsigned char *toc_tls
;
13552 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13553 &local_syms
, rel
, input_bfd
))
13557 tls_mask
= *toc_tls
;
13560 /* Check that tls relocs are used with tls syms, and non-tls
13561 relocs are used with non-tls syms. */
13562 if (r_symndx
!= STN_UNDEF
13563 && r_type
!= R_PPC64_NONE
13565 || h
->elf
.root
.type
== bfd_link_hash_defined
13566 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13567 && (IS_PPC64_TLS_RELOC (r_type
)
13568 != (sym_type
== STT_TLS
13569 || (sym_type
== STT_SECTION
13570 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13573 && (r_type
== R_PPC64_TLS
13574 || r_type
== R_PPC64_TLSGD
13575 || r_type
== R_PPC64_TLSLD
))
13576 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13579 info
->callbacks
->einfo
13580 (!IS_PPC64_TLS_RELOC (r_type
)
13581 /* xgettext:c-format */
13582 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13583 /* xgettext:c-format */
13584 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13585 input_bfd
, input_section
, rel
->r_offset
,
13586 ppc64_elf_howto_table
[r_type
]->name
,
13590 /* Ensure reloc mapping code below stays sane. */
13591 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13592 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13593 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13594 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13595 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13596 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13597 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13598 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13599 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13600 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13608 case R_PPC64_LO_DS_OPT
:
13609 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13610 if ((insn
& (0x3f << 26)) != 58u << 26)
13612 insn
+= (14u << 26) - (58u << 26);
13613 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13614 r_type
= R_PPC64_TOC16_LO
;
13615 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13618 case R_PPC64_TOC16
:
13619 case R_PPC64_TOC16_LO
:
13620 case R_PPC64_TOC16_DS
:
13621 case R_PPC64_TOC16_LO_DS
:
13623 /* Check for toc tls entries. */
13624 unsigned char *toc_tls
;
13627 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13628 &local_syms
, rel
, input_bfd
);
13634 tls_mask
= *toc_tls
;
13635 if (r_type
== R_PPC64_TOC16_DS
13636 || r_type
== R_PPC64_TOC16_LO_DS
)
13639 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13644 /* If we found a GD reloc pair, then we might be
13645 doing a GD->IE transition. */
13648 tls_gd
= TLS_TPRELGD
;
13649 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13652 else if (retval
== 3)
13654 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13662 case R_PPC64_GOT_TPREL16_HI
:
13663 case R_PPC64_GOT_TPREL16_HA
:
13665 && (tls_mask
& TLS_TPREL
) == 0)
13667 rel
->r_offset
-= d_offset
;
13668 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13669 r_type
= R_PPC64_NONE
;
13670 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13674 case R_PPC64_GOT_TPREL16_DS
:
13675 case R_PPC64_GOT_TPREL16_LO_DS
:
13677 && (tls_mask
& TLS_TPREL
) == 0)
13680 insn
= bfd_get_32 (input_bfd
,
13681 contents
+ rel
->r_offset
- d_offset
);
13683 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13684 bfd_put_32 (input_bfd
, insn
,
13685 contents
+ rel
->r_offset
- d_offset
);
13686 r_type
= R_PPC64_TPREL16_HA
;
13687 if (toc_symndx
!= 0)
13689 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13690 rel
->r_addend
= toc_addend
;
13691 /* We changed the symbol. Start over in order to
13692 get h, sym, sec etc. right. */
13696 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13702 && (tls_mask
& TLS_TPREL
) == 0)
13704 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13705 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13708 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13709 /* Was PPC64_TLS which sits on insn boundary, now
13710 PPC64_TPREL16_LO which is at low-order half-word. */
13711 rel
->r_offset
+= d_offset
;
13712 r_type
= R_PPC64_TPREL16_LO
;
13713 if (toc_symndx
!= 0)
13715 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13716 rel
->r_addend
= toc_addend
;
13717 /* We changed the symbol. Start over in order to
13718 get h, sym, sec etc. right. */
13722 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13726 case R_PPC64_GOT_TLSGD16_HI
:
13727 case R_PPC64_GOT_TLSGD16_HA
:
13728 tls_gd
= TLS_TPRELGD
;
13729 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13733 case R_PPC64_GOT_TLSLD16_HI
:
13734 case R_PPC64_GOT_TLSLD16_HA
:
13735 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13738 if ((tls_mask
& tls_gd
) != 0)
13739 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13740 + R_PPC64_GOT_TPREL16_DS
);
13743 rel
->r_offset
-= d_offset
;
13744 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13745 r_type
= R_PPC64_NONE
;
13747 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13751 case R_PPC64_GOT_TLSGD16
:
13752 case R_PPC64_GOT_TLSGD16_LO
:
13753 tls_gd
= TLS_TPRELGD
;
13754 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13758 case R_PPC64_GOT_TLSLD16
:
13759 case R_PPC64_GOT_TLSLD16_LO
:
13760 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13762 unsigned int insn1
, insn2
, insn3
;
13766 offset
= (bfd_vma
) -1;
13767 /* If not using the newer R_PPC64_TLSGD/LD to mark
13768 __tls_get_addr calls, we must trust that the call
13769 stays with its arg setup insns, ie. that the next
13770 reloc is the __tls_get_addr call associated with
13771 the current reloc. Edit both insns. */
13772 if (input_section
->has_tls_get_addr_call
13773 && rel
+ 1 < relend
13774 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13775 htab
->tls_get_addr
,
13776 htab
->tls_get_addr_fd
))
13777 offset
= rel
[1].r_offset
;
13778 /* We read the low GOT_TLS (or TOC16) insn because we
13779 need to keep the destination reg. It may be
13780 something other than the usual r3, and moved to r3
13781 before the call by intervening code. */
13782 insn1
= bfd_get_32 (input_bfd
,
13783 contents
+ rel
->r_offset
- d_offset
);
13784 if ((tls_mask
& tls_gd
) != 0)
13787 insn1
&= (0x1f << 21) | (0x1f << 16);
13788 insn1
|= 58 << 26; /* ld */
13789 insn2
= 0x7c636a14; /* add 3,3,13 */
13790 if (offset
!= (bfd_vma
) -1)
13791 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13792 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13793 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13794 + R_PPC64_GOT_TPREL16_DS
);
13796 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13797 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13802 insn1
&= 0x1f << 21;
13803 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13804 insn2
= 0x38630000; /* addi 3,3,0 */
13807 /* Was an LD reloc. */
13809 sec
= local_sections
[toc_symndx
];
13811 r_symndx
< symtab_hdr
->sh_info
;
13813 if (local_sections
[r_symndx
] == sec
)
13815 if (r_symndx
>= symtab_hdr
->sh_info
)
13816 r_symndx
= STN_UNDEF
;
13817 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13818 if (r_symndx
!= STN_UNDEF
)
13819 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13820 + sec
->output_offset
13821 + sec
->output_section
->vma
);
13823 else if (toc_symndx
!= 0)
13825 r_symndx
= toc_symndx
;
13826 rel
->r_addend
= toc_addend
;
13828 r_type
= R_PPC64_TPREL16_HA
;
13829 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13830 if (offset
!= (bfd_vma
) -1)
13832 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13833 R_PPC64_TPREL16_LO
);
13834 rel
[1].r_offset
= offset
+ d_offset
;
13835 rel
[1].r_addend
= rel
->r_addend
;
13838 bfd_put_32 (input_bfd
, insn1
,
13839 contents
+ rel
->r_offset
- d_offset
);
13840 if (offset
!= (bfd_vma
) -1)
13842 insn3
= bfd_get_32 (input_bfd
,
13843 contents
+ offset
+ 4);
13845 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13847 rel
[1].r_offset
+= 4;
13848 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13851 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13853 if ((tls_mask
& tls_gd
) == 0
13854 && (tls_gd
== 0 || toc_symndx
!= 0))
13856 /* We changed the symbol. Start over in order
13857 to get h, sym, sec etc. right. */
13863 case R_PPC64_TLSGD
:
13864 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13866 unsigned int insn2
, insn3
;
13867 bfd_vma offset
= rel
->r_offset
;
13869 if ((tls_mask
& TLS_TPRELGD
) != 0)
13872 r_type
= R_PPC64_NONE
;
13873 insn2
= 0x7c636a14; /* add 3,3,13 */
13878 if (toc_symndx
!= 0)
13880 r_symndx
= toc_symndx
;
13881 rel
->r_addend
= toc_addend
;
13883 r_type
= R_PPC64_TPREL16_LO
;
13884 rel
->r_offset
= offset
+ d_offset
;
13885 insn2
= 0x38630000; /* addi 3,3,0 */
13887 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13888 /* Zap the reloc on the _tls_get_addr call too. */
13889 BFD_ASSERT (offset
== rel
[1].r_offset
);
13890 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13891 insn3
= bfd_get_32 (input_bfd
,
13892 contents
+ offset
+ 4);
13894 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13896 rel
->r_offset
+= 4;
13897 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13900 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13901 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13906 case R_PPC64_TLSLD
:
13907 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13909 unsigned int insn2
, insn3
;
13910 bfd_vma offset
= rel
->r_offset
;
13913 sec
= local_sections
[toc_symndx
];
13915 r_symndx
< symtab_hdr
->sh_info
;
13917 if (local_sections
[r_symndx
] == sec
)
13919 if (r_symndx
>= symtab_hdr
->sh_info
)
13920 r_symndx
= STN_UNDEF
;
13921 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13922 if (r_symndx
!= STN_UNDEF
)
13923 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13924 + sec
->output_offset
13925 + sec
->output_section
->vma
);
13927 r_type
= R_PPC64_TPREL16_LO
;
13928 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13929 rel
->r_offset
= offset
+ d_offset
;
13930 /* Zap the reloc on the _tls_get_addr call too. */
13931 BFD_ASSERT (offset
== rel
[1].r_offset
);
13932 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13933 insn2
= 0x38630000; /* addi 3,3,0 */
13934 insn3
= bfd_get_32 (input_bfd
,
13935 contents
+ offset
+ 4);
13937 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13939 rel
->r_offset
+= 4;
13940 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13943 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13948 case R_PPC64_DTPMOD64
:
13949 if (rel
+ 1 < relend
13950 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13951 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13953 if ((tls_mask
& TLS_GD
) == 0)
13955 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13956 if ((tls_mask
& TLS_TPRELGD
) != 0)
13957 r_type
= R_PPC64_TPREL64
;
13960 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13961 r_type
= R_PPC64_NONE
;
13963 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13968 if ((tls_mask
& TLS_LD
) == 0)
13970 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13971 r_type
= R_PPC64_NONE
;
13972 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13977 case R_PPC64_TPREL64
:
13978 if ((tls_mask
& TLS_TPREL
) == 0)
13980 r_type
= R_PPC64_NONE
;
13981 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13985 case R_PPC64_ENTRY
:
13986 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13987 if (!bfd_link_pic (info
)
13988 && !info
->traditional_format
13989 && relocation
+ 0x80008000 <= 0xffffffff)
13991 unsigned int insn1
, insn2
;
13993 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13994 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13995 if ((insn1
& ~0xfffc) == LD_R2_0R12
13996 && insn2
== ADD_R2_R2_R12
)
13998 bfd_put_32 (input_bfd
,
13999 LIS_R2
+ PPC_HA (relocation
),
14000 contents
+ rel
->r_offset
);
14001 bfd_put_32 (input_bfd
,
14002 ADDI_R2_R2
+ PPC_LO (relocation
),
14003 contents
+ rel
->r_offset
+ 4);
14008 relocation
-= (rel
->r_offset
14009 + input_section
->output_offset
14010 + input_section
->output_section
->vma
);
14011 if (relocation
+ 0x80008000 <= 0xffffffff)
14013 unsigned int insn1
, insn2
;
14015 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14016 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14017 if ((insn1
& ~0xfffc) == LD_R2_0R12
14018 && insn2
== ADD_R2_R2_R12
)
14020 bfd_put_32 (input_bfd
,
14021 ADDIS_R2_R12
+ PPC_HA (relocation
),
14022 contents
+ rel
->r_offset
);
14023 bfd_put_32 (input_bfd
,
14024 ADDI_R2_R2
+ PPC_LO (relocation
),
14025 contents
+ rel
->r_offset
+ 4);
14031 case R_PPC64_REL16_HA
:
14032 /* If we are generating a non-PIC executable, edit
14033 . 0: addis 2,12,.TOC.-0b@ha
14034 . addi 2,2,.TOC.-0b@l
14035 used by ELFv2 global entry points to set up r2, to
14038 if .TOC. is in range. */
14039 if (!bfd_link_pic (info
)
14040 && !info
->traditional_format
14042 && rel
->r_addend
== d_offset
14043 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14044 && rel
+ 1 < relend
14045 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14046 && rel
[1].r_offset
== rel
->r_offset
+ 4
14047 && rel
[1].r_addend
== rel
->r_addend
+ 4
14048 && relocation
+ 0x80008000 <= 0xffffffff)
14050 unsigned int insn1
, insn2
;
14051 bfd_vma offset
= rel
->r_offset
- d_offset
;
14052 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14053 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14054 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14055 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14057 r_type
= R_PPC64_ADDR16_HA
;
14058 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14059 rel
->r_addend
-= d_offset
;
14060 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14061 rel
[1].r_addend
-= d_offset
+ 4;
14062 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14068 /* Handle other relocations that tweak non-addend part of insn. */
14070 max_br_offset
= 1 << 25;
14071 addend
= rel
->r_addend
;
14072 reloc_dest
= DEST_NORMAL
;
14078 case R_PPC64_TOCSAVE
:
14079 if (relocation
+ addend
== (rel
->r_offset
14080 + input_section
->output_offset
14081 + input_section
->output_section
->vma
)
14082 && tocsave_find (htab
, NO_INSERT
,
14083 &local_syms
, rel
, input_bfd
))
14085 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14087 || insn
== CROR_151515
|| insn
== CROR_313131
)
14088 bfd_put_32 (input_bfd
,
14089 STD_R2_0R1
+ STK_TOC (htab
),
14090 contents
+ rel
->r_offset
);
14094 /* Branch taken prediction relocations. */
14095 case R_PPC64_ADDR14_BRTAKEN
:
14096 case R_PPC64_REL14_BRTAKEN
:
14097 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14098 /* Fall through. */
14100 /* Branch not taken prediction relocations. */
14101 case R_PPC64_ADDR14_BRNTAKEN
:
14102 case R_PPC64_REL14_BRNTAKEN
:
14103 insn
|= bfd_get_32 (input_bfd
,
14104 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14105 /* Fall through. */
14107 case R_PPC64_REL14
:
14108 max_br_offset
= 1 << 15;
14109 /* Fall through. */
14111 case R_PPC64_REL24
:
14112 /* Calls to functions with a different TOC, such as calls to
14113 shared objects, need to alter the TOC pointer. This is
14114 done using a linkage stub. A REL24 branching to these
14115 linkage stubs needs to be followed by a nop, as the nop
14116 will be replaced with an instruction to restore the TOC
14121 && h
->oh
->is_func_descriptor
)
14122 fdh
= ppc_follow_link (h
->oh
);
14123 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14125 if (stub_entry
!= NULL
14126 && (stub_entry
->stub_type
== ppc_stub_plt_call
14127 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14128 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14129 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14131 bfd_boolean can_plt_call
= FALSE
;
14133 /* All of these stubs will modify r2, so there must be a
14134 branch and link followed by a nop. The nop is
14135 replaced by an insn to restore r2. */
14136 if (rel
->r_offset
+ 8 <= input_section
->size
)
14140 br
= bfd_get_32 (input_bfd
,
14141 contents
+ rel
->r_offset
);
14146 nop
= bfd_get_32 (input_bfd
,
14147 contents
+ rel
->r_offset
+ 4);
14149 || nop
== CROR_151515
|| nop
== CROR_313131
)
14152 && (h
== htab
->tls_get_addr_fd
14153 || h
== htab
->tls_get_addr
)
14154 && htab
->params
->tls_get_addr_opt
)
14156 /* Special stub used, leave nop alone. */
14159 bfd_put_32 (input_bfd
,
14160 LD_R2_0R1
+ STK_TOC (htab
),
14161 contents
+ rel
->r_offset
+ 4);
14162 can_plt_call
= TRUE
;
14167 if (!can_plt_call
&& h
!= NULL
)
14169 const char *name
= h
->elf
.root
.root
.string
;
14174 if (strncmp (name
, "__libc_start_main", 17) == 0
14175 && (name
[17] == 0 || name
[17] == '@'))
14177 /* Allow crt1 branch to go via a toc adjusting
14178 stub. Other calls that never return could do
14179 the same, if we could detect such. */
14180 can_plt_call
= TRUE
;
14186 /* g++ as of 20130507 emits self-calls without a
14187 following nop. This is arguably wrong since we
14188 have conflicting information. On the one hand a
14189 global symbol and on the other a local call
14190 sequence, but don't error for this special case.
14191 It isn't possible to cheaply verify we have
14192 exactly such a call. Allow all calls to the same
14194 asection
*code_sec
= sec
;
14196 if (get_opd_info (sec
) != NULL
)
14198 bfd_vma off
= (relocation
+ addend
14199 - sec
->output_section
->vma
14200 - sec
->output_offset
);
14202 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14204 if (code_sec
== input_section
)
14205 can_plt_call
= TRUE
;
14210 if (stub_entry
->stub_type
== ppc_stub_plt_call
14211 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14212 info
->callbacks
->einfo
14213 /* xgettext:c-format */
14214 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14215 "recompile with -fPIC\n"),
14216 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14218 info
->callbacks
->einfo
14219 /* xgettext:c-format */
14220 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14221 "(-mcmodel=small toc adjust stub)\n"),
14222 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14224 bfd_set_error (bfd_error_bad_value
);
14229 && (stub_entry
->stub_type
== ppc_stub_plt_call
14230 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14231 unresolved_reloc
= FALSE
;
14234 if ((stub_entry
== NULL
14235 || stub_entry
->stub_type
== ppc_stub_long_branch
14236 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14237 && get_opd_info (sec
) != NULL
)
14239 /* The branch destination is the value of the opd entry. */
14240 bfd_vma off
= (relocation
+ addend
14241 - sec
->output_section
->vma
14242 - sec
->output_offset
);
14243 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14244 if (dest
!= (bfd_vma
) -1)
14248 reloc_dest
= DEST_OPD
;
14252 /* If the branch is out of reach we ought to have a long
14254 from
= (rel
->r_offset
14255 + input_section
->output_offset
14256 + input_section
->output_section
->vma
);
14258 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14262 if (stub_entry
!= NULL
14263 && (stub_entry
->stub_type
== ppc_stub_long_branch
14264 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14265 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14266 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14267 || (relocation
+ addend
- from
+ max_br_offset
14268 < 2 * max_br_offset
)))
14269 /* Don't use the stub if this branch is in range. */
14272 if (stub_entry
!= NULL
)
14274 /* Munge up the value and addend so that we call the stub
14275 rather than the procedure directly. */
14276 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14278 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14279 relocation
+= (stub_sec
->output_offset
14280 + stub_sec
->output_section
->vma
14281 + stub_sec
->size
- htab
->sfpr
->size
14282 - htab
->sfpr
->output_offset
14283 - htab
->sfpr
->output_section
->vma
);
14285 relocation
= (stub_entry
->stub_offset
14286 + stub_sec
->output_offset
14287 + stub_sec
->output_section
->vma
);
14289 reloc_dest
= DEST_STUB
;
14291 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14292 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14293 && (ALWAYS_EMIT_R2SAVE
14294 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14295 && rel
+ 1 < relend
14296 && rel
[1].r_offset
== rel
->r_offset
+ 4
14297 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14305 /* Set 'a' bit. This is 0b00010 in BO field for branch
14306 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14307 for branch on CTR insns (BO == 1a00t or 1a01t). */
14308 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14309 insn
|= 0x02 << 21;
14310 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14311 insn
|= 0x08 << 21;
14317 /* Invert 'y' bit if not the default. */
14318 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14319 insn
^= 0x01 << 21;
14322 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14325 /* NOP out calls to undefined weak functions.
14326 We can thus call a weak function without first
14327 checking whether the function is defined. */
14329 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14330 && h
->elf
.dynindx
== -1
14331 && r_type
== R_PPC64_REL24
14335 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14341 /* Set `addend'. */
14346 info
->callbacks
->einfo
14347 /* xgettext:c-format */
14348 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14349 input_bfd
, (int) r_type
, sym_name
);
14351 bfd_set_error (bfd_error_bad_value
);
14357 case R_PPC64_TLSGD
:
14358 case R_PPC64_TLSLD
:
14359 case R_PPC64_TOCSAVE
:
14360 case R_PPC64_GNU_VTINHERIT
:
14361 case R_PPC64_GNU_VTENTRY
:
14362 case R_PPC64_ENTRY
:
14365 /* GOT16 relocations. Like an ADDR16 using the symbol's
14366 address in the GOT as relocation value instead of the
14367 symbol's value itself. Also, create a GOT entry for the
14368 symbol and put the symbol value there. */
14369 case R_PPC64_GOT_TLSGD16
:
14370 case R_PPC64_GOT_TLSGD16_LO
:
14371 case R_PPC64_GOT_TLSGD16_HI
:
14372 case R_PPC64_GOT_TLSGD16_HA
:
14373 tls_type
= TLS_TLS
| TLS_GD
;
14376 case R_PPC64_GOT_TLSLD16
:
14377 case R_PPC64_GOT_TLSLD16_LO
:
14378 case R_PPC64_GOT_TLSLD16_HI
:
14379 case R_PPC64_GOT_TLSLD16_HA
:
14380 tls_type
= TLS_TLS
| TLS_LD
;
14383 case R_PPC64_GOT_TPREL16_DS
:
14384 case R_PPC64_GOT_TPREL16_LO_DS
:
14385 case R_PPC64_GOT_TPREL16_HI
:
14386 case R_PPC64_GOT_TPREL16_HA
:
14387 tls_type
= TLS_TLS
| TLS_TPREL
;
14390 case R_PPC64_GOT_DTPREL16_DS
:
14391 case R_PPC64_GOT_DTPREL16_LO_DS
:
14392 case R_PPC64_GOT_DTPREL16_HI
:
14393 case R_PPC64_GOT_DTPREL16_HA
:
14394 tls_type
= TLS_TLS
| TLS_DTPREL
;
14397 case R_PPC64_GOT16
:
14398 case R_PPC64_GOT16_LO
:
14399 case R_PPC64_GOT16_HI
:
14400 case R_PPC64_GOT16_HA
:
14401 case R_PPC64_GOT16_DS
:
14402 case R_PPC64_GOT16_LO_DS
:
14405 /* Relocation is to the entry for this symbol in the global
14410 unsigned long indx
= 0;
14411 struct got_entry
*ent
;
14413 if (tls_type
== (TLS_TLS
| TLS_LD
)
14415 || !h
->elf
.def_dynamic
))
14416 ent
= ppc64_tlsld_got (input_bfd
);
14422 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14423 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
),
14425 || (bfd_link_pic (info
)
14426 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14427 /* This is actually a static link, or it is a
14428 -Bsymbolic link and the symbol is defined
14429 locally, or the symbol was forced to be local
14430 because of a version file. */
14434 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14435 indx
= h
->elf
.dynindx
;
14436 unresolved_reloc
= FALSE
;
14438 ent
= h
->elf
.got
.glist
;
14442 if (local_got_ents
== NULL
)
14444 ent
= local_got_ents
[r_symndx
];
14447 for (; ent
!= NULL
; ent
= ent
->next
)
14448 if (ent
->addend
== orig_rel
.r_addend
14449 && ent
->owner
== input_bfd
14450 && ent
->tls_type
== tls_type
)
14456 if (ent
->is_indirect
)
14457 ent
= ent
->got
.ent
;
14458 offp
= &ent
->got
.offset
;
14459 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14463 /* The offset must always be a multiple of 8. We use the
14464 least significant bit to record whether we have already
14465 processed this entry. */
14467 if ((off
& 1) != 0)
14471 /* Generate relocs for the dynamic linker, except in
14472 the case of TLSLD where we'll use one entry per
14480 ? h
->elf
.type
== STT_GNU_IFUNC
14481 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14483 relgot
= htab
->elf
.irelplt
;
14484 else if ((bfd_link_pic (info
) || indx
!= 0)
14486 || (tls_type
== (TLS_TLS
| TLS_LD
)
14487 && !h
->elf
.def_dynamic
)
14488 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14489 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14490 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14491 if (relgot
!= NULL
)
14493 outrel
.r_offset
= (got
->output_section
->vma
14494 + got
->output_offset
14496 outrel
.r_addend
= addend
;
14497 if (tls_type
& (TLS_LD
| TLS_GD
))
14499 outrel
.r_addend
= 0;
14500 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14501 if (tls_type
== (TLS_TLS
| TLS_GD
))
14503 loc
= relgot
->contents
;
14504 loc
+= (relgot
->reloc_count
++
14505 * sizeof (Elf64_External_Rela
));
14506 bfd_elf64_swap_reloca_out (output_bfd
,
14508 outrel
.r_offset
+= 8;
14509 outrel
.r_addend
= addend
;
14511 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14514 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14515 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14516 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14517 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14518 else if (indx
!= 0)
14519 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14523 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14525 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14527 /* Write the .got section contents for the sake
14529 loc
= got
->contents
+ off
;
14530 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14534 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14536 outrel
.r_addend
+= relocation
;
14537 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14539 if (htab
->elf
.tls_sec
== NULL
)
14540 outrel
.r_addend
= 0;
14542 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14545 loc
= relgot
->contents
;
14546 loc
+= (relgot
->reloc_count
++
14547 * sizeof (Elf64_External_Rela
));
14548 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14551 /* Init the .got section contents here if we're not
14552 emitting a reloc. */
14555 relocation
+= addend
;
14556 if (tls_type
== (TLS_TLS
| TLS_LD
))
14558 else if (tls_type
!= 0)
14560 if (htab
->elf
.tls_sec
== NULL
)
14564 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14565 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14566 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14569 if (tls_type
== (TLS_TLS
| TLS_GD
))
14571 bfd_put_64 (output_bfd
, relocation
,
14572 got
->contents
+ off
+ 8);
14577 bfd_put_64 (output_bfd
, relocation
,
14578 got
->contents
+ off
);
14582 if (off
>= (bfd_vma
) -2)
14585 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14586 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14590 case R_PPC64_PLT16_HA
:
14591 case R_PPC64_PLT16_HI
:
14592 case R_PPC64_PLT16_LO
:
14593 case R_PPC64_PLT32
:
14594 case R_PPC64_PLT64
:
14595 /* Relocation is to the entry for this symbol in the
14596 procedure linkage table. */
14598 struct plt_entry
**plt_list
= NULL
;
14600 plt_list
= &h
->elf
.plt
.plist
;
14601 else if (local_got_ents
!= NULL
)
14603 struct plt_entry
**local_plt
= (struct plt_entry
**)
14604 (local_got_ents
+ symtab_hdr
->sh_info
);
14605 unsigned char *local_got_tls_masks
= (unsigned char *)
14606 (local_plt
+ symtab_hdr
->sh_info
);
14607 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14608 plt_list
= local_plt
+ r_symndx
;
14612 struct plt_entry
*ent
;
14614 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14615 if (ent
->plt
.offset
!= (bfd_vma
) -1
14616 && ent
->addend
== orig_rel
.r_addend
)
14620 plt
= htab
->elf
.splt
;
14621 if (!htab
->elf
.dynamic_sections_created
14623 || h
->elf
.dynindx
== -1)
14624 plt
= htab
->elf
.iplt
;
14625 relocation
= (plt
->output_section
->vma
14626 + plt
->output_offset
14627 + ent
->plt
.offset
);
14629 unresolved_reloc
= FALSE
;
14637 /* Relocation value is TOC base. */
14638 relocation
= TOCstart
;
14639 if (r_symndx
== STN_UNDEF
)
14640 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14641 else if (unresolved_reloc
)
14643 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14644 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14646 unresolved_reloc
= TRUE
;
14649 /* TOC16 relocs. We want the offset relative to the TOC base,
14650 which is the address of the start of the TOC plus 0x8000.
14651 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14653 case R_PPC64_TOC16
:
14654 case R_PPC64_TOC16_LO
:
14655 case R_PPC64_TOC16_HI
:
14656 case R_PPC64_TOC16_DS
:
14657 case R_PPC64_TOC16_LO_DS
:
14658 case R_PPC64_TOC16_HA
:
14659 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14662 /* Relocate against the beginning of the section. */
14663 case R_PPC64_SECTOFF
:
14664 case R_PPC64_SECTOFF_LO
:
14665 case R_PPC64_SECTOFF_HI
:
14666 case R_PPC64_SECTOFF_DS
:
14667 case R_PPC64_SECTOFF_LO_DS
:
14668 case R_PPC64_SECTOFF_HA
:
14670 addend
-= sec
->output_section
->vma
;
14673 case R_PPC64_REL16
:
14674 case R_PPC64_REL16_LO
:
14675 case R_PPC64_REL16_HI
:
14676 case R_PPC64_REL16_HA
:
14677 case R_PPC64_REL16DX_HA
:
14680 case R_PPC64_REL14
:
14681 case R_PPC64_REL14_BRNTAKEN
:
14682 case R_PPC64_REL14_BRTAKEN
:
14683 case R_PPC64_REL24
:
14686 case R_PPC64_TPREL16
:
14687 case R_PPC64_TPREL16_LO
:
14688 case R_PPC64_TPREL16_HI
:
14689 case R_PPC64_TPREL16_HA
:
14690 case R_PPC64_TPREL16_DS
:
14691 case R_PPC64_TPREL16_LO_DS
:
14692 case R_PPC64_TPREL16_HIGH
:
14693 case R_PPC64_TPREL16_HIGHA
:
14694 case R_PPC64_TPREL16_HIGHER
:
14695 case R_PPC64_TPREL16_HIGHERA
:
14696 case R_PPC64_TPREL16_HIGHEST
:
14697 case R_PPC64_TPREL16_HIGHESTA
:
14699 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14700 && h
->elf
.dynindx
== -1)
14702 /* Make this relocation against an undefined weak symbol
14703 resolve to zero. This is really just a tweak, since
14704 code using weak externs ought to check that they are
14705 defined before using them. */
14706 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14708 insn
= bfd_get_32 (input_bfd
, p
);
14709 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14711 bfd_put_32 (input_bfd
, insn
, p
);
14714 if (htab
->elf
.tls_sec
!= NULL
)
14715 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14716 if (bfd_link_pic (info
))
14717 /* The TPREL16 relocs shouldn't really be used in shared
14718 libs as they will result in DT_TEXTREL being set, but
14719 support them anyway. */
14723 case R_PPC64_DTPREL16
:
14724 case R_PPC64_DTPREL16_LO
:
14725 case R_PPC64_DTPREL16_HI
:
14726 case R_PPC64_DTPREL16_HA
:
14727 case R_PPC64_DTPREL16_DS
:
14728 case R_PPC64_DTPREL16_LO_DS
:
14729 case R_PPC64_DTPREL16_HIGH
:
14730 case R_PPC64_DTPREL16_HIGHA
:
14731 case R_PPC64_DTPREL16_HIGHER
:
14732 case R_PPC64_DTPREL16_HIGHERA
:
14733 case R_PPC64_DTPREL16_HIGHEST
:
14734 case R_PPC64_DTPREL16_HIGHESTA
:
14735 if (htab
->elf
.tls_sec
!= NULL
)
14736 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14739 case R_PPC64_ADDR64_LOCAL
:
14740 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14745 case R_PPC64_DTPMOD64
:
14750 case R_PPC64_TPREL64
:
14751 if (htab
->elf
.tls_sec
!= NULL
)
14752 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14755 case R_PPC64_DTPREL64
:
14756 if (htab
->elf
.tls_sec
!= NULL
)
14757 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14758 /* Fall through. */
14760 /* Relocations that may need to be propagated if this is a
14762 case R_PPC64_REL30
:
14763 case R_PPC64_REL32
:
14764 case R_PPC64_REL64
:
14765 case R_PPC64_ADDR14
:
14766 case R_PPC64_ADDR14_BRNTAKEN
:
14767 case R_PPC64_ADDR14_BRTAKEN
:
14768 case R_PPC64_ADDR16
:
14769 case R_PPC64_ADDR16_DS
:
14770 case R_PPC64_ADDR16_HA
:
14771 case R_PPC64_ADDR16_HI
:
14772 case R_PPC64_ADDR16_HIGH
:
14773 case R_PPC64_ADDR16_HIGHA
:
14774 case R_PPC64_ADDR16_HIGHER
:
14775 case R_PPC64_ADDR16_HIGHERA
:
14776 case R_PPC64_ADDR16_HIGHEST
:
14777 case R_PPC64_ADDR16_HIGHESTA
:
14778 case R_PPC64_ADDR16_LO
:
14779 case R_PPC64_ADDR16_LO_DS
:
14780 case R_PPC64_ADDR24
:
14781 case R_PPC64_ADDR32
:
14782 case R_PPC64_ADDR64
:
14783 case R_PPC64_UADDR16
:
14784 case R_PPC64_UADDR32
:
14785 case R_PPC64_UADDR64
:
14787 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14790 if (NO_OPD_RELOCS
&& is_opd
)
14793 if (bfd_link_pic (info
)
14794 ? ((h
!= NULL
&& pc_dynrelocs (h
))
14795 || must_be_dyn_reloc (info
, r_type
))
14797 ? h
->dyn_relocs
!= NULL
14798 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14800 bfd_boolean skip
, relocate
;
14804 /* When generating a dynamic object, these relocations
14805 are copied into the output file to be resolved at run
14811 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14812 input_section
, rel
->r_offset
);
14813 if (out_off
== (bfd_vma
) -1)
14815 else if (out_off
== (bfd_vma
) -2)
14816 skip
= TRUE
, relocate
= TRUE
;
14817 out_off
+= (input_section
->output_section
->vma
14818 + input_section
->output_offset
);
14819 outrel
.r_offset
= out_off
;
14820 outrel
.r_addend
= rel
->r_addend
;
14822 /* Optimize unaligned reloc use. */
14823 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14824 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14825 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14826 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14827 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14828 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14829 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14830 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14831 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14834 memset (&outrel
, 0, sizeof outrel
);
14835 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14837 && r_type
!= R_PPC64_TOC
)
14839 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14840 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14844 /* This symbol is local, or marked to become local,
14845 or this is an opd section reloc which must point
14846 at a local function. */
14847 outrel
.r_addend
+= relocation
;
14848 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14850 if (is_opd
&& h
!= NULL
)
14852 /* Lie about opd entries. This case occurs
14853 when building shared libraries and we
14854 reference a function in another shared
14855 lib. The same thing happens for a weak
14856 definition in an application that's
14857 overridden by a strong definition in a
14858 shared lib. (I believe this is a generic
14859 bug in binutils handling of weak syms.)
14860 In these cases we won't use the opd
14861 entry in this lib. */
14862 unresolved_reloc
= FALSE
;
14865 && r_type
== R_PPC64_ADDR64
14867 ? h
->elf
.type
== STT_GNU_IFUNC
14868 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14869 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14872 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14874 /* We need to relocate .opd contents for ld.so.
14875 Prelink also wants simple and consistent rules
14876 for relocs. This make all RELATIVE relocs have
14877 *r_offset equal to r_addend. */
14886 ? h
->elf
.type
== STT_GNU_IFUNC
14887 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14889 info
->callbacks
->einfo
14890 /* xgettext:c-format */
14891 (_("%P: %H: %s for indirect "
14892 "function `%T' unsupported\n"),
14893 input_bfd
, input_section
, rel
->r_offset
,
14894 ppc64_elf_howto_table
[r_type
]->name
,
14898 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14900 else if (sec
== NULL
|| sec
->owner
== NULL
)
14902 bfd_set_error (bfd_error_bad_value
);
14909 osec
= sec
->output_section
;
14910 indx
= elf_section_data (osec
)->dynindx
;
14914 if ((osec
->flags
& SEC_READONLY
) == 0
14915 && htab
->elf
.data_index_section
!= NULL
)
14916 osec
= htab
->elf
.data_index_section
;
14918 osec
= htab
->elf
.text_index_section
;
14919 indx
= elf_section_data (osec
)->dynindx
;
14921 BFD_ASSERT (indx
!= 0);
14923 /* We are turning this relocation into one
14924 against a section symbol, so subtract out
14925 the output section's address but not the
14926 offset of the input section in the output
14928 outrel
.r_addend
-= osec
->vma
;
14931 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14935 sreloc
= elf_section_data (input_section
)->sreloc
;
14937 ? h
->elf
.type
== STT_GNU_IFUNC
14938 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14939 sreloc
= htab
->elf
.irelplt
;
14940 if (sreloc
== NULL
)
14943 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14946 loc
= sreloc
->contents
;
14947 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14948 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14950 /* If this reloc is against an external symbol, it will
14951 be computed at runtime, so there's no need to do
14952 anything now. However, for the sake of prelink ensure
14953 that the section contents are a known value. */
14956 unresolved_reloc
= FALSE
;
14957 /* The value chosen here is quite arbitrary as ld.so
14958 ignores section contents except for the special
14959 case of .opd where the contents might be accessed
14960 before relocation. Choose zero, as that won't
14961 cause reloc overflow. */
14964 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14965 to improve backward compatibility with older
14967 if (r_type
== R_PPC64_ADDR64
)
14968 addend
= outrel
.r_addend
;
14969 /* Adjust pc_relative relocs to have zero in *r_offset. */
14970 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14971 addend
= (input_section
->output_section
->vma
14972 + input_section
->output_offset
14979 case R_PPC64_GLOB_DAT
:
14980 case R_PPC64_JMP_SLOT
:
14981 case R_PPC64_JMP_IREL
:
14982 case R_PPC64_RELATIVE
:
14983 /* We shouldn't ever see these dynamic relocs in relocatable
14985 /* Fall through. */
14987 case R_PPC64_PLTGOT16
:
14988 case R_PPC64_PLTGOT16_DS
:
14989 case R_PPC64_PLTGOT16_HA
:
14990 case R_PPC64_PLTGOT16_HI
:
14991 case R_PPC64_PLTGOT16_LO
:
14992 case R_PPC64_PLTGOT16_LO_DS
:
14993 case R_PPC64_PLTREL32
:
14994 case R_PPC64_PLTREL64
:
14995 /* These ones haven't been implemented yet. */
14997 info
->callbacks
->einfo
14998 /* xgettext:c-format */
14999 (_("%P: %B: %s is not supported for `%T'\n"),
15001 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15003 bfd_set_error (bfd_error_invalid_operation
);
15008 /* Multi-instruction sequences that access the TOC can be
15009 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15010 to nop; addi rb,r2,x; */
15016 case R_PPC64_GOT_TLSLD16_HI
:
15017 case R_PPC64_GOT_TLSGD16_HI
:
15018 case R_PPC64_GOT_TPREL16_HI
:
15019 case R_PPC64_GOT_DTPREL16_HI
:
15020 case R_PPC64_GOT16_HI
:
15021 case R_PPC64_TOC16_HI
:
15022 /* These relocs would only be useful if building up an
15023 offset to later add to r2, perhaps in an indexed
15024 addressing mode instruction. Don't try to optimize.
15025 Unfortunately, the possibility of someone building up an
15026 offset like this or even with the HA relocs, means that
15027 we need to check the high insn when optimizing the low
15031 case R_PPC64_GOT_TLSLD16_HA
:
15032 case R_PPC64_GOT_TLSGD16_HA
:
15033 case R_PPC64_GOT_TPREL16_HA
:
15034 case R_PPC64_GOT_DTPREL16_HA
:
15035 case R_PPC64_GOT16_HA
:
15036 case R_PPC64_TOC16_HA
:
15037 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15038 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15040 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15041 bfd_put_32 (input_bfd
, NOP
, p
);
15045 case R_PPC64_GOT_TLSLD16_LO
:
15046 case R_PPC64_GOT_TLSGD16_LO
:
15047 case R_PPC64_GOT_TPREL16_LO_DS
:
15048 case R_PPC64_GOT_DTPREL16_LO_DS
:
15049 case R_PPC64_GOT16_LO
:
15050 case R_PPC64_GOT16_LO_DS
:
15051 case R_PPC64_TOC16_LO
:
15052 case R_PPC64_TOC16_LO_DS
:
15053 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15054 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15056 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15057 insn
= bfd_get_32 (input_bfd
, p
);
15058 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15060 /* Transform addic to addi when we change reg. */
15061 insn
&= ~((0x3f << 26) | (0x1f << 16));
15062 insn
|= (14u << 26) | (2 << 16);
15066 insn
&= ~(0x1f << 16);
15069 bfd_put_32 (input_bfd
, insn
, p
);
15074 /* Do any further special processing. */
15075 howto
= ppc64_elf_howto_table
[(int) r_type
];
15081 case R_PPC64_REL16_HA
:
15082 case R_PPC64_REL16DX_HA
:
15083 case R_PPC64_ADDR16_HA
:
15084 case R_PPC64_ADDR16_HIGHA
:
15085 case R_PPC64_ADDR16_HIGHERA
:
15086 case R_PPC64_ADDR16_HIGHESTA
:
15087 case R_PPC64_TOC16_HA
:
15088 case R_PPC64_SECTOFF_HA
:
15089 case R_PPC64_TPREL16_HA
:
15090 case R_PPC64_TPREL16_HIGHA
:
15091 case R_PPC64_TPREL16_HIGHERA
:
15092 case R_PPC64_TPREL16_HIGHESTA
:
15093 case R_PPC64_DTPREL16_HA
:
15094 case R_PPC64_DTPREL16_HIGHA
:
15095 case R_PPC64_DTPREL16_HIGHERA
:
15096 case R_PPC64_DTPREL16_HIGHESTA
:
15097 /* It's just possible that this symbol is a weak symbol
15098 that's not actually defined anywhere. In that case,
15099 'sec' would be NULL, and we should leave the symbol
15100 alone (it will be set to zero elsewhere in the link). */
15103 /* Fall through. */
15105 case R_PPC64_GOT16_HA
:
15106 case R_PPC64_PLTGOT16_HA
:
15107 case R_PPC64_PLT16_HA
:
15108 case R_PPC64_GOT_TLSGD16_HA
:
15109 case R_PPC64_GOT_TLSLD16_HA
:
15110 case R_PPC64_GOT_TPREL16_HA
:
15111 case R_PPC64_GOT_DTPREL16_HA
:
15112 /* Add 0x10000 if sign bit in 0:15 is set.
15113 Bits 0:15 are not used. */
15117 case R_PPC64_ADDR16_DS
:
15118 case R_PPC64_ADDR16_LO_DS
:
15119 case R_PPC64_GOT16_DS
:
15120 case R_PPC64_GOT16_LO_DS
:
15121 case R_PPC64_PLT16_LO_DS
:
15122 case R_PPC64_SECTOFF_DS
:
15123 case R_PPC64_SECTOFF_LO_DS
:
15124 case R_PPC64_TOC16_DS
:
15125 case R_PPC64_TOC16_LO_DS
:
15126 case R_PPC64_PLTGOT16_DS
:
15127 case R_PPC64_PLTGOT16_LO_DS
:
15128 case R_PPC64_GOT_TPREL16_DS
:
15129 case R_PPC64_GOT_TPREL16_LO_DS
:
15130 case R_PPC64_GOT_DTPREL16_DS
:
15131 case R_PPC64_GOT_DTPREL16_LO_DS
:
15132 case R_PPC64_TPREL16_DS
:
15133 case R_PPC64_TPREL16_LO_DS
:
15134 case R_PPC64_DTPREL16_DS
:
15135 case R_PPC64_DTPREL16_LO_DS
:
15136 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15138 /* If this reloc is against an lq, lxv, or stxv insn, then
15139 the value must be a multiple of 16. This is somewhat of
15140 a hack, but the "correct" way to do this by defining _DQ
15141 forms of all the _DS relocs bloats all reloc switches in
15142 this file. It doesn't make much sense to use these
15143 relocs in data, so testing the insn should be safe. */
15144 if ((insn
& (0x3f << 26)) == (56u << 26)
15145 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15147 relocation
+= addend
;
15148 addend
= insn
& (mask
^ 3);
15149 if ((relocation
& mask
) != 0)
15151 relocation
^= relocation
& mask
;
15152 info
->callbacks
->einfo
15153 /* xgettext:c-format */
15154 (_("%P: %H: error: %s not a multiple of %u\n"),
15155 input_bfd
, input_section
, rel
->r_offset
,
15158 bfd_set_error (bfd_error_bad_value
);
15165 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15166 because such sections are not SEC_ALLOC and thus ld.so will
15167 not process them. */
15168 if (unresolved_reloc
15169 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15170 && h
->elf
.def_dynamic
)
15171 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15172 rel
->r_offset
) != (bfd_vma
) -1)
15174 info
->callbacks
->einfo
15175 /* xgettext:c-format */
15176 (_("%P: %H: unresolvable %s against `%T'\n"),
15177 input_bfd
, input_section
, rel
->r_offset
,
15179 h
->elf
.root
.root
.string
);
15183 /* 16-bit fields in insns mostly have signed values, but a
15184 few insns have 16-bit unsigned values. Really, we should
15185 have different reloc types. */
15186 if (howto
->complain_on_overflow
!= complain_overflow_dont
15187 && howto
->dst_mask
== 0xffff
15188 && (input_section
->flags
& SEC_CODE
) != 0)
15190 enum complain_overflow complain
= complain_overflow_signed
;
15192 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15193 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15194 complain
= complain_overflow_bitfield
;
15195 else if (howto
->rightshift
== 0
15196 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15197 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15198 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15199 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15200 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15201 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15202 complain
= complain_overflow_unsigned
;
15203 if (howto
->complain_on_overflow
!= complain
)
15205 alt_howto
= *howto
;
15206 alt_howto
.complain_on_overflow
= complain
;
15207 howto
= &alt_howto
;
15211 if (r_type
== R_PPC64_REL16DX_HA
)
15213 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15214 if (rel
->r_offset
+ 4 > input_section
->size
)
15215 r
= bfd_reloc_outofrange
;
15218 relocation
+= addend
;
15219 relocation
-= (rel
->r_offset
15220 + input_section
->output_offset
15221 + input_section
->output_section
->vma
);
15222 relocation
= (bfd_signed_vma
) relocation
>> 16;
15223 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15225 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15226 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15228 if (relocation
+ 0x8000 > 0xffff)
15229 r
= bfd_reloc_overflow
;
15233 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15234 rel
->r_offset
, relocation
, addend
);
15236 if (r
!= bfd_reloc_ok
)
15238 char *more_info
= NULL
;
15239 const char *reloc_name
= howto
->name
;
15241 if (reloc_dest
!= DEST_NORMAL
)
15243 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15244 if (more_info
!= NULL
)
15246 strcpy (more_info
, reloc_name
);
15247 strcat (more_info
, (reloc_dest
== DEST_OPD
15248 ? " (OPD)" : " (stub)"));
15249 reloc_name
= more_info
;
15253 if (r
== bfd_reloc_overflow
)
15255 /* On code like "if (foo) foo();" don't report overflow
15256 on a branch to zero when foo is undefined. */
15258 && (reloc_dest
== DEST_STUB
15260 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15261 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15262 && is_branch_reloc (r_type
))))
15263 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15264 sym_name
, reloc_name
,
15266 input_bfd
, input_section
,
15271 info
->callbacks
->einfo
15272 /* xgettext:c-format */
15273 (_("%P: %H: %s against `%T': error %d\n"),
15274 input_bfd
, input_section
, rel
->r_offset
,
15275 reloc_name
, sym_name
, (int) r
);
15278 if (more_info
!= NULL
)
15288 Elf_Internal_Shdr
*rel_hdr
;
15289 size_t deleted
= rel
- wrel
;
15291 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15292 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15293 if (rel_hdr
->sh_size
== 0)
15295 /* It is too late to remove an empty reloc section. Leave
15297 ??? What is wrong with an empty section??? */
15298 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15301 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15302 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15303 input_section
->reloc_count
-= deleted
;
15306 /* If we're emitting relocations, then shortly after this function
15307 returns, reloc offsets and addends for this section will be
15308 adjusted. Worse, reloc symbol indices will be for the output
15309 file rather than the input. Save a copy of the relocs for
15310 opd_entry_value. */
15311 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15314 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15315 rel
= bfd_alloc (input_bfd
, amt
);
15316 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15317 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15320 memcpy (rel
, relocs
, amt
);
15325 /* Adjust the value of any local symbols in opd sections. */
15328 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15329 const char *name ATTRIBUTE_UNUSED
,
15330 Elf_Internal_Sym
*elfsym
,
15331 asection
*input_sec
,
15332 struct elf_link_hash_entry
*h
)
15334 struct _opd_sec_data
*opd
;
15341 opd
= get_opd_info (input_sec
);
15342 if (opd
== NULL
|| opd
->adjust
== NULL
)
15345 value
= elfsym
->st_value
- input_sec
->output_offset
;
15346 if (!bfd_link_relocatable (info
))
15347 value
-= input_sec
->output_section
->vma
;
15349 adjust
= opd
->adjust
[OPD_NDX (value
)];
15353 elfsym
->st_value
+= adjust
;
15357 /* Finish up dynamic symbol handling. We set the contents of various
15358 dynamic sections here. */
15361 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15362 struct bfd_link_info
*info
,
15363 struct elf_link_hash_entry
*h
,
15364 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
15366 struct ppc_link_hash_table
*htab
;
15367 struct plt_entry
*ent
;
15368 Elf_Internal_Rela rela
;
15371 htab
= ppc_hash_table (info
);
15375 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15376 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15378 /* This symbol has an entry in the procedure linkage
15379 table. Set it up. */
15380 if (!htab
->elf
.dynamic_sections_created
15381 || h
->dynindx
== -1)
15383 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15385 && (h
->root
.type
== bfd_link_hash_defined
15386 || h
->root
.type
== bfd_link_hash_defweak
));
15387 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15388 + htab
->elf
.iplt
->output_offset
15389 + ent
->plt
.offset
);
15391 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15393 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15394 rela
.r_addend
= (h
->root
.u
.def
.value
15395 + h
->root
.u
.def
.section
->output_offset
15396 + h
->root
.u
.def
.section
->output_section
->vma
15398 loc
= (htab
->elf
.irelplt
->contents
15399 + (htab
->elf
.irelplt
->reloc_count
++
15400 * sizeof (Elf64_External_Rela
)));
15404 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15405 + htab
->elf
.splt
->output_offset
15406 + ent
->plt
.offset
);
15407 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15408 rela
.r_addend
= ent
->addend
;
15409 loc
= (htab
->elf
.srelplt
->contents
15410 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15411 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15413 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15415 if (!htab
->opd_abi
)
15417 if (!h
->def_regular
)
15419 /* Mark the symbol as undefined, rather than as
15420 defined in glink. Leave the value if there were
15421 any relocations where pointer equality matters
15422 (this is a clue for the dynamic linker, to make
15423 function pointer comparisons work between an
15424 application and shared library), otherwise set it
15426 sym
->st_shndx
= SHN_UNDEF
;
15427 if (!h
->pointer_equality_needed
)
15429 else if (!h
->ref_regular_nonweak
)
15431 /* This breaks function pointer comparisons, but
15432 that is better than breaking tests for a NULL
15433 function pointer. */
15442 /* This symbol needs a copy reloc. Set it up. */
15444 if (h
->dynindx
== -1
15445 || (h
->root
.type
!= bfd_link_hash_defined
15446 && h
->root
.type
!= bfd_link_hash_defweak
)
15447 || htab
->relbss
== NULL
)
15450 rela
.r_offset
= (h
->root
.u
.def
.value
15451 + h
->root
.u
.def
.section
->output_section
->vma
15452 + h
->root
.u
.def
.section
->output_offset
);
15453 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15455 loc
= htab
->relbss
->contents
;
15456 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15457 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15463 /* Used to decide how to sort relocs in an optimal manner for the
15464 dynamic linker, before writing them out. */
15466 static enum elf_reloc_type_class
15467 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15468 const asection
*rel_sec
,
15469 const Elf_Internal_Rela
*rela
)
15471 enum elf_ppc64_reloc_type r_type
;
15472 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15474 if (rel_sec
== htab
->elf
.irelplt
)
15475 return reloc_class_ifunc
;
15477 r_type
= ELF64_R_TYPE (rela
->r_info
);
15480 case R_PPC64_RELATIVE
:
15481 return reloc_class_relative
;
15482 case R_PPC64_JMP_SLOT
:
15483 return reloc_class_plt
;
15485 return reloc_class_copy
;
15487 return reloc_class_normal
;
15491 /* Finish up the dynamic sections. */
15494 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15495 struct bfd_link_info
*info
)
15497 struct ppc_link_hash_table
*htab
;
15501 htab
= ppc_hash_table (info
);
15505 dynobj
= htab
->elf
.dynobj
;
15506 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15508 if (htab
->elf
.dynamic_sections_created
)
15510 Elf64_External_Dyn
*dyncon
, *dynconend
;
15512 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15515 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15516 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15517 for (; dyncon
< dynconend
; dyncon
++)
15519 Elf_Internal_Dyn dyn
;
15522 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15529 case DT_PPC64_GLINK
:
15531 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15532 /* We stupidly defined DT_PPC64_GLINK to be the start
15533 of glink rather than the first entry point, which is
15534 what ld.so needs, and now have a bigger stub to
15535 support automatic multiple TOCs. */
15536 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15540 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15543 dyn
.d_un
.d_ptr
= s
->vma
;
15547 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15548 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15551 case DT_PPC64_OPDSZ
:
15552 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15555 dyn
.d_un
.d_val
= s
->size
;
15559 s
= htab
->elf
.splt
;
15560 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15564 s
= htab
->elf
.srelplt
;
15565 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15569 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15573 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15577 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15579 /* Fill in the first entry in the global offset table.
15580 We use it to hold the link-time TOCbase. */
15581 bfd_put_64 (output_bfd
,
15582 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15583 htab
->elf
.sgot
->contents
);
15585 /* Set .got entry size. */
15586 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15589 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15591 /* Set .plt entry size. */
15592 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15593 = PLT_ENTRY_SIZE (htab
);
15596 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15597 brlt ourselves if emitrelocations. */
15598 if (htab
->brlt
!= NULL
15599 && htab
->brlt
->reloc_count
!= 0
15600 && !_bfd_elf_link_output_relocs (output_bfd
,
15602 elf_section_data (htab
->brlt
)->rela
.hdr
,
15603 elf_section_data (htab
->brlt
)->relocs
,
15607 if (htab
->glink
!= NULL
15608 && htab
->glink
->reloc_count
!= 0
15609 && !_bfd_elf_link_output_relocs (output_bfd
,
15611 elf_section_data (htab
->glink
)->rela
.hdr
,
15612 elf_section_data (htab
->glink
)->relocs
,
15616 if (htab
->glink_eh_frame
!= NULL
15617 && htab
->glink_eh_frame
->size
!= 0)
15621 asection
*stub_sec
;
15623 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15624 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15626 stub_sec
= stub_sec
->next
)
15627 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15633 /* Offset to stub section. */
15634 val
= (stub_sec
->output_section
->vma
15635 + stub_sec
->output_offset
);
15636 val
-= (htab
->glink_eh_frame
->output_section
->vma
15637 + htab
->glink_eh_frame
->output_offset
15638 + (p
- htab
->glink_eh_frame
->contents
));
15639 if (val
+ 0x80000000 > 0xffffffff)
15641 info
->callbacks
->einfo
15642 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15646 bfd_put_32 (dynobj
, val
, p
);
15648 /* stub section size. */
15650 /* Augmentation. */
15655 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15661 /* Offset to .glink. */
15662 val
= (htab
->glink
->output_section
->vma
15663 + htab
->glink
->output_offset
15665 val
-= (htab
->glink_eh_frame
->output_section
->vma
15666 + htab
->glink_eh_frame
->output_offset
15667 + (p
- htab
->glink_eh_frame
->contents
));
15668 if (val
+ 0x80000000 > 0xffffffff)
15670 info
->callbacks
->einfo
15671 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15672 htab
->glink
->name
);
15675 bfd_put_32 (dynobj
, val
, p
);
15679 /* Augmentation. */
15685 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15686 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15687 htab
->glink_eh_frame
,
15688 htab
->glink_eh_frame
->contents
))
15692 /* We need to handle writing out multiple GOT sections ourselves,
15693 since we didn't add them to DYNOBJ. We know dynobj is the first
15695 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15699 if (!is_ppc64_elf (dynobj
))
15702 s
= ppc64_elf_tdata (dynobj
)->got
;
15705 && s
->output_section
!= bfd_abs_section_ptr
15706 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15707 s
->contents
, s
->output_offset
,
15710 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15713 && s
->output_section
!= bfd_abs_section_ptr
15714 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15715 s
->contents
, s
->output_offset
,
15723 #include "elf64-target.h"
15725 /* FreeBSD support */
15727 #undef TARGET_LITTLE_SYM
15728 #undef TARGET_LITTLE_NAME
15730 #undef TARGET_BIG_SYM
15731 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15732 #undef TARGET_BIG_NAME
15733 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15736 #define ELF_OSABI ELFOSABI_FREEBSD
15739 #define elf64_bed elf64_powerpc_fbsd_bed
15741 #include "elf64-target.h"