1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
105 #define elf_backend_gc_keep ppc64_elf_gc_keep
106 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
107 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* __glink_PLTresolve stub instructions. We enter with the index in R0. */
191 #define GLINK_PLTRESOLVE_SIZE(htab) \
192 (8u + (htab->opd_abi ? 11 * 4 : 14 * 4))
196 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
197 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
199 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
200 /* ld %2,(0b-1b)(%11) */
201 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
202 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
208 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
209 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
210 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
211 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
212 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
215 #define NOP 0x60000000
217 /* Some other nops. */
218 #define CROR_151515 0x4def7b82
219 #define CROR_313131 0x4ffffb82
221 /* .glink entries for the first 32k functions are two instructions. */
222 #define LI_R0_0 0x38000000 /* li %r0,0 */
223 #define B_DOT 0x48000000 /* b . */
225 /* After that, we need two instructions to load the index, followed by
227 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
228 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
230 /* Instructions used by the save and restore reg functions. */
231 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
232 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
233 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
234 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
235 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
236 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
237 #define LI_R12_0 0x39800000 /* li %r12,0 */
238 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
239 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
240 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
241 #define BLR 0x4e800020 /* blr */
243 /* Since .opd is an array of descriptors and each entry will end up
244 with identical R_PPC64_RELATIVE relocs, there is really no need to
245 propagate .opd relocs; The dynamic linker should be taught to
246 relocate .opd without reloc entries. */
247 #ifndef NO_OPD_RELOCS
248 #define NO_OPD_RELOCS 0
252 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
256 abiversion (bfd
*abfd
)
258 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
262 set_abiversion (bfd
*abfd
, int ver
)
264 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
265 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
268 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
270 /* Relocation HOWTO's. */
271 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
273 static reloc_howto_type ppc64_elf_howto_raw
[] = {
274 /* This reloc does nothing. */
275 HOWTO (R_PPC64_NONE
, /* type */
277 3, /* size (0 = byte, 1 = short, 2 = long) */
279 FALSE
, /* pc_relative */
281 complain_overflow_dont
, /* complain_on_overflow */
282 bfd_elf_generic_reloc
, /* special_function */
283 "R_PPC64_NONE", /* name */
284 FALSE
, /* partial_inplace */
287 FALSE
), /* pcrel_offset */
289 /* A standard 32 bit relocation. */
290 HOWTO (R_PPC64_ADDR32
, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE
, /* pc_relative */
296 complain_overflow_bitfield
, /* complain_on_overflow */
297 bfd_elf_generic_reloc
, /* special_function */
298 "R_PPC64_ADDR32", /* name */
299 FALSE
, /* partial_inplace */
301 0xffffffff, /* dst_mask */
302 FALSE
), /* pcrel_offset */
304 /* An absolute 26 bit branch; the lower two bits must be zero.
305 FIXME: we don't check that, we just clear them. */
306 HOWTO (R_PPC64_ADDR24
, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE
, /* pc_relative */
312 complain_overflow_bitfield
, /* complain_on_overflow */
313 bfd_elf_generic_reloc
, /* special_function */
314 "R_PPC64_ADDR24", /* name */
315 FALSE
, /* partial_inplace */
317 0x03fffffc, /* dst_mask */
318 FALSE
), /* pcrel_offset */
320 /* A standard 16 bit relocation. */
321 HOWTO (R_PPC64_ADDR16
, /* type */
323 1, /* size (0 = byte, 1 = short, 2 = long) */
325 FALSE
, /* pc_relative */
327 complain_overflow_bitfield
, /* complain_on_overflow */
328 bfd_elf_generic_reloc
, /* special_function */
329 "R_PPC64_ADDR16", /* name */
330 FALSE
, /* partial_inplace */
332 0xffff, /* dst_mask */
333 FALSE
), /* pcrel_offset */
335 /* A 16 bit relocation without overflow. */
336 HOWTO (R_PPC64_ADDR16_LO
, /* type */
338 1, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE
, /* pc_relative */
342 complain_overflow_dont
,/* complain_on_overflow */
343 bfd_elf_generic_reloc
, /* special_function */
344 "R_PPC64_ADDR16_LO", /* name */
345 FALSE
, /* partial_inplace */
347 0xffff, /* dst_mask */
348 FALSE
), /* pcrel_offset */
350 /* Bits 16-31 of an address. */
351 HOWTO (R_PPC64_ADDR16_HI
, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE
, /* pc_relative */
357 complain_overflow_signed
, /* complain_on_overflow */
358 bfd_elf_generic_reloc
, /* special_function */
359 "R_PPC64_ADDR16_HI", /* name */
360 FALSE
, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE
), /* pcrel_offset */
365 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
366 bits, treated as a signed number, is negative. */
367 HOWTO (R_PPC64_ADDR16_HA
, /* type */
369 1, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE
, /* pc_relative */
373 complain_overflow_signed
, /* complain_on_overflow */
374 ppc64_elf_ha_reloc
, /* special_function */
375 "R_PPC64_ADDR16_HA", /* name */
376 FALSE
, /* partial_inplace */
378 0xffff, /* dst_mask */
379 FALSE
), /* pcrel_offset */
381 /* An absolute 16 bit branch; the lower two bits must be zero.
382 FIXME: we don't check that, we just clear them. */
383 HOWTO (R_PPC64_ADDR14
, /* type */
385 2, /* size (0 = byte, 1 = short, 2 = long) */
387 FALSE
, /* pc_relative */
389 complain_overflow_signed
, /* complain_on_overflow */
390 ppc64_elf_branch_reloc
, /* special_function */
391 "R_PPC64_ADDR14", /* name */
392 FALSE
, /* partial_inplace */
394 0x0000fffc, /* dst_mask */
395 FALSE
), /* pcrel_offset */
397 /* An absolute 16 bit branch, for which bit 10 should be set to
398 indicate that the branch is expected to be taken. The lower two
399 bits must be zero. */
400 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
404 FALSE
, /* pc_relative */
406 complain_overflow_signed
, /* complain_on_overflow */
407 ppc64_elf_brtaken_reloc
, /* special_function */
408 "R_PPC64_ADDR14_BRTAKEN",/* name */
409 FALSE
, /* partial_inplace */
411 0x0000fffc, /* dst_mask */
412 FALSE
), /* pcrel_offset */
414 /* An absolute 16 bit branch, for which bit 10 should be set to
415 indicate that the branch is not expected to be taken. The lower
416 two bits must be zero. */
417 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
419 2, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE
, /* pc_relative */
423 complain_overflow_signed
, /* complain_on_overflow */
424 ppc64_elf_brtaken_reloc
, /* special_function */
425 "R_PPC64_ADDR14_BRNTAKEN",/* name */
426 FALSE
, /* partial_inplace */
428 0x0000fffc, /* dst_mask */
429 FALSE
), /* pcrel_offset */
431 /* A relative 26 bit branch; the lower two bits must be zero. */
432 HOWTO (R_PPC64_REL24
, /* type */
434 2, /* size (0 = byte, 1 = short, 2 = long) */
436 TRUE
, /* pc_relative */
438 complain_overflow_signed
, /* complain_on_overflow */
439 ppc64_elf_branch_reloc
, /* special_function */
440 "R_PPC64_REL24", /* name */
441 FALSE
, /* partial_inplace */
443 0x03fffffc, /* dst_mask */
444 TRUE
), /* pcrel_offset */
446 /* A relative 16 bit branch; the lower two bits must be zero. */
447 HOWTO (R_PPC64_REL14
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 TRUE
, /* pc_relative */
453 complain_overflow_signed
, /* complain_on_overflow */
454 ppc64_elf_branch_reloc
, /* special_function */
455 "R_PPC64_REL14", /* name */
456 FALSE
, /* partial_inplace */
458 0x0000fffc, /* dst_mask */
459 TRUE
), /* pcrel_offset */
461 /* A relative 16 bit branch. Bit 10 should be set to indicate that
462 the branch is expected to be taken. The lower two bits must be
464 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 TRUE
, /* pc_relative */
470 complain_overflow_signed
, /* complain_on_overflow */
471 ppc64_elf_brtaken_reloc
, /* special_function */
472 "R_PPC64_REL14_BRTAKEN", /* name */
473 FALSE
, /* partial_inplace */
475 0x0000fffc, /* dst_mask */
476 TRUE
), /* pcrel_offset */
478 /* A relative 16 bit branch. Bit 10 should be set to indicate that
479 the branch is not expected to be taken. The lower two bits must
481 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
485 TRUE
, /* pc_relative */
487 complain_overflow_signed
, /* complain_on_overflow */
488 ppc64_elf_brtaken_reloc
, /* special_function */
489 "R_PPC64_REL14_BRNTAKEN",/* name */
490 FALSE
, /* partial_inplace */
492 0x0000fffc, /* dst_mask */
493 TRUE
), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
497 HOWTO (R_PPC64_GOT16
, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE
, /* pc_relative */
503 complain_overflow_signed
, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc
, /* special_function */
505 "R_PPC64_GOT16", /* name */
506 FALSE
, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE
), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_LO
, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_dont
, /* complain_on_overflow */
520 ppc64_elf_unhandled_reloc
, /* special_function */
521 "R_PPC64_GOT16_LO", /* name */
522 FALSE
, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE
), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HI
, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE
, /* pc_relative */
535 complain_overflow_signed
,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc
, /* special_function */
537 "R_PPC64_GOT16_HI", /* name */
538 FALSE
, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE
), /* pcrel_offset */
543 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
545 HOWTO (R_PPC64_GOT16_HA
, /* type */
547 1, /* size (0 = byte, 1 = short, 2 = long) */
549 FALSE
, /* pc_relative */
551 complain_overflow_signed
,/* complain_on_overflow */
552 ppc64_elf_unhandled_reloc
, /* special_function */
553 "R_PPC64_GOT16_HA", /* name */
554 FALSE
, /* partial_inplace */
556 0xffff, /* dst_mask */
557 FALSE
), /* pcrel_offset */
559 /* This is used only by the dynamic linker. The symbol should exist
560 both in the object being run and in some shared library. The
561 dynamic linker copies the data addressed by the symbol from the
562 shared library into the object, because the object being
563 run has to have the data at some particular address. */
564 HOWTO (R_PPC64_COPY
, /* type */
566 0, /* this one is variable size */
568 FALSE
, /* pc_relative */
570 complain_overflow_dont
, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc
, /* special_function */
572 "R_PPC64_COPY", /* name */
573 FALSE
, /* partial_inplace */
576 FALSE
), /* pcrel_offset */
578 /* Like R_PPC64_ADDR64, but used when setting global offset table
580 HOWTO (R_PPC64_GLOB_DAT
, /* type */
582 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
584 FALSE
, /* pc_relative */
586 complain_overflow_dont
, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc
, /* special_function */
588 "R_PPC64_GLOB_DAT", /* name */
589 FALSE
, /* partial_inplace */
591 ONES (64), /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 /* Created by the link editor. Marks a procedure linkage table
595 entry for a symbol. */
596 HOWTO (R_PPC64_JMP_SLOT
, /* type */
598 0, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE
, /* pc_relative */
602 complain_overflow_dont
, /* complain_on_overflow */
603 ppc64_elf_unhandled_reloc
, /* special_function */
604 "R_PPC64_JMP_SLOT", /* name */
605 FALSE
, /* partial_inplace */
608 FALSE
), /* pcrel_offset */
610 /* Used only by the dynamic linker. When the object is run, this
611 doubleword64 is set to the load address of the object, plus the
613 HOWTO (R_PPC64_RELATIVE
, /* type */
615 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
617 FALSE
, /* pc_relative */
619 complain_overflow_dont
, /* complain_on_overflow */
620 bfd_elf_generic_reloc
, /* special_function */
621 "R_PPC64_RELATIVE", /* name */
622 FALSE
, /* partial_inplace */
624 ONES (64), /* dst_mask */
625 FALSE
), /* pcrel_offset */
627 /* Like R_PPC64_ADDR32, but may be unaligned. */
628 HOWTO (R_PPC64_UADDR32
, /* type */
630 2, /* size (0 = byte, 1 = short, 2 = long) */
632 FALSE
, /* pc_relative */
634 complain_overflow_bitfield
, /* complain_on_overflow */
635 bfd_elf_generic_reloc
, /* special_function */
636 "R_PPC64_UADDR32", /* name */
637 FALSE
, /* partial_inplace */
639 0xffffffff, /* dst_mask */
640 FALSE
), /* pcrel_offset */
642 /* Like R_PPC64_ADDR16, but may be unaligned. */
643 HOWTO (R_PPC64_UADDR16
, /* type */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_bitfield
, /* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_PPC64_UADDR16", /* name */
652 FALSE
, /* partial_inplace */
654 0xffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 /* 32-bit PC relative. */
658 HOWTO (R_PPC64_REL32
, /* type */
660 2, /* size (0 = byte, 1 = short, 2 = long) */
662 TRUE
, /* pc_relative */
664 complain_overflow_signed
, /* complain_on_overflow */
665 bfd_elf_generic_reloc
, /* special_function */
666 "R_PPC64_REL32", /* name */
667 FALSE
, /* partial_inplace */
669 0xffffffff, /* dst_mask */
670 TRUE
), /* pcrel_offset */
672 /* 32-bit relocation to the symbol's procedure linkage table. */
673 HOWTO (R_PPC64_PLT32
, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 FALSE
, /* pc_relative */
679 complain_overflow_bitfield
, /* complain_on_overflow */
680 ppc64_elf_unhandled_reloc
, /* special_function */
681 "R_PPC64_PLT32", /* name */
682 FALSE
, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 FALSE
), /* pcrel_offset */
687 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
688 FIXME: R_PPC64_PLTREL32 not supported. */
689 HOWTO (R_PPC64_PLTREL32
, /* type */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
693 TRUE
, /* pc_relative */
695 complain_overflow_signed
, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc
, /* special_function */
697 "R_PPC64_PLTREL32", /* name */
698 FALSE
, /* partial_inplace */
700 0xffffffff, /* dst_mask */
701 TRUE
), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_LO
, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE
, /* pc_relative */
711 complain_overflow_dont
, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc
, /* special_function */
713 "R_PPC64_PLT16_LO", /* name */
714 FALSE
, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE
), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HI
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_signed
, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc
, /* special_function */
729 "R_PPC64_PLT16_HI", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
737 HOWTO (R_PPC64_PLT16_HA
, /* type */
739 1, /* size (0 = byte, 1 = short, 2 = long) */
741 FALSE
, /* pc_relative */
743 complain_overflow_signed
, /* complain_on_overflow */
744 ppc64_elf_unhandled_reloc
, /* special_function */
745 "R_PPC64_PLT16_HA", /* name */
746 FALSE
, /* partial_inplace */
748 0xffff, /* dst_mask */
749 FALSE
), /* pcrel_offset */
751 /* 16-bit section relative relocation. */
752 HOWTO (R_PPC64_SECTOFF
, /* type */
754 1, /* size (0 = byte, 1 = short, 2 = long) */
756 FALSE
, /* pc_relative */
758 complain_overflow_signed
, /* complain_on_overflow */
759 ppc64_elf_sectoff_reloc
, /* special_function */
760 "R_PPC64_SECTOFF", /* name */
761 FALSE
, /* partial_inplace */
763 0xffff, /* dst_mask */
764 FALSE
), /* pcrel_offset */
766 /* Like R_PPC64_SECTOFF, but no overflow warning. */
767 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
769 1, /* size (0 = byte, 1 = short, 2 = long) */
771 FALSE
, /* pc_relative */
773 complain_overflow_dont
, /* complain_on_overflow */
774 ppc64_elf_sectoff_reloc
, /* special_function */
775 "R_PPC64_SECTOFF_LO", /* name */
776 FALSE
, /* partial_inplace */
778 0xffff, /* dst_mask */
779 FALSE
), /* pcrel_offset */
781 /* 16-bit upper half section relative relocation. */
782 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE
, /* pc_relative */
788 complain_overflow_signed
, /* complain_on_overflow */
789 ppc64_elf_sectoff_reloc
, /* special_function */
790 "R_PPC64_SECTOFF_HI", /* name */
791 FALSE
, /* partial_inplace */
793 0xffff, /* dst_mask */
794 FALSE
), /* pcrel_offset */
796 /* 16-bit upper half adjusted section relative relocation. */
797 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
799 1, /* size (0 = byte, 1 = short, 2 = long) */
801 FALSE
, /* pc_relative */
803 complain_overflow_signed
, /* complain_on_overflow */
804 ppc64_elf_sectoff_ha_reloc
, /* special_function */
805 "R_PPC64_SECTOFF_HA", /* name */
806 FALSE
, /* partial_inplace */
808 0xffff, /* dst_mask */
809 FALSE
), /* pcrel_offset */
811 /* Like R_PPC64_REL24 without touching the two least significant bits. */
812 HOWTO (R_PPC64_REL30
, /* type */
814 2, /* size (0 = byte, 1 = short, 2 = long) */
816 TRUE
, /* pc_relative */
818 complain_overflow_dont
, /* complain_on_overflow */
819 bfd_elf_generic_reloc
, /* special_function */
820 "R_PPC64_REL30", /* name */
821 FALSE
, /* partial_inplace */
823 0xfffffffc, /* dst_mask */
824 TRUE
), /* pcrel_offset */
826 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
828 /* A standard 64-bit relocation. */
829 HOWTO (R_PPC64_ADDR64
, /* type */
831 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
833 FALSE
, /* pc_relative */
835 complain_overflow_dont
, /* complain_on_overflow */
836 bfd_elf_generic_reloc
, /* special_function */
837 "R_PPC64_ADDR64", /* name */
838 FALSE
, /* partial_inplace */
840 ONES (64), /* dst_mask */
841 FALSE
), /* pcrel_offset */
843 /* The bits 32-47 of an address. */
844 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE
, /* pc_relative */
850 complain_overflow_dont
, /* complain_on_overflow */
851 bfd_elf_generic_reloc
, /* special_function */
852 "R_PPC64_ADDR16_HIGHER", /* name */
853 FALSE
, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* The bits 32-47 of an address, plus 1 if the contents of the low
859 16 bits, treated as a signed number, is negative. */
860 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
862 1, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE
, /* pc_relative */
866 complain_overflow_dont
, /* complain_on_overflow */
867 ppc64_elf_ha_reloc
, /* special_function */
868 "R_PPC64_ADDR16_HIGHERA", /* name */
869 FALSE
, /* partial_inplace */
871 0xffff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
874 /* The bits 48-63 of an address. */
875 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE
, /* pc_relative */
881 complain_overflow_dont
, /* complain_on_overflow */
882 bfd_elf_generic_reloc
, /* special_function */
883 "R_PPC64_ADDR16_HIGHEST", /* name */
884 FALSE
, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE
), /* pcrel_offset */
889 /* The bits 48-63 of an address, plus 1 if the contents of the low
890 16 bits, treated as a signed number, is negative. */
891 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
893 1, /* size (0 = byte, 1 = short, 2 = long) */
895 FALSE
, /* pc_relative */
897 complain_overflow_dont
, /* complain_on_overflow */
898 ppc64_elf_ha_reloc
, /* special_function */
899 "R_PPC64_ADDR16_HIGHESTA", /* name */
900 FALSE
, /* partial_inplace */
902 0xffff, /* dst_mask */
903 FALSE
), /* pcrel_offset */
905 /* Like ADDR64, but may be unaligned. */
906 HOWTO (R_PPC64_UADDR64
, /* type */
908 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
910 FALSE
, /* pc_relative */
912 complain_overflow_dont
, /* complain_on_overflow */
913 bfd_elf_generic_reloc
, /* special_function */
914 "R_PPC64_UADDR64", /* name */
915 FALSE
, /* partial_inplace */
917 ONES (64), /* dst_mask */
918 FALSE
), /* pcrel_offset */
920 /* 64-bit relative relocation. */
921 HOWTO (R_PPC64_REL64
, /* type */
923 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
925 TRUE
, /* pc_relative */
927 complain_overflow_dont
, /* complain_on_overflow */
928 bfd_elf_generic_reloc
, /* special_function */
929 "R_PPC64_REL64", /* name */
930 FALSE
, /* partial_inplace */
932 ONES (64), /* dst_mask */
933 TRUE
), /* pcrel_offset */
935 /* 64-bit relocation to the symbol's procedure linkage table. */
936 HOWTO (R_PPC64_PLT64
, /* type */
938 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
940 FALSE
, /* pc_relative */
942 complain_overflow_dont
, /* complain_on_overflow */
943 ppc64_elf_unhandled_reloc
, /* special_function */
944 "R_PPC64_PLT64", /* name */
945 FALSE
, /* partial_inplace */
947 ONES (64), /* dst_mask */
948 FALSE
), /* pcrel_offset */
950 /* 64-bit PC relative relocation to the symbol's procedure linkage
952 /* FIXME: R_PPC64_PLTREL64 not supported. */
953 HOWTO (R_PPC64_PLTREL64
, /* type */
955 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
957 TRUE
, /* pc_relative */
959 complain_overflow_dont
, /* complain_on_overflow */
960 ppc64_elf_unhandled_reloc
, /* special_function */
961 "R_PPC64_PLTREL64", /* name */
962 FALSE
, /* partial_inplace */
964 ONES (64), /* dst_mask */
965 TRUE
), /* pcrel_offset */
967 /* 16 bit TOC-relative relocation. */
969 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
970 HOWTO (R_PPC64_TOC16
, /* type */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE
, /* pc_relative */
976 complain_overflow_signed
, /* complain_on_overflow */
977 ppc64_elf_toc_reloc
, /* special_function */
978 "R_PPC64_TOC16", /* name */
979 FALSE
, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE
), /* pcrel_offset */
984 /* 16 bit TOC-relative relocation without overflow. */
986 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
987 HOWTO (R_PPC64_TOC16_LO
, /* type */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE
, /* pc_relative */
993 complain_overflow_dont
, /* complain_on_overflow */
994 ppc64_elf_toc_reloc
, /* special_function */
995 "R_PPC64_TOC16_LO", /* name */
996 FALSE
, /* partial_inplace */
998 0xffff, /* dst_mask */
999 FALSE
), /* pcrel_offset */
1001 /* 16 bit TOC-relative relocation, high 16 bits. */
1003 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1004 HOWTO (R_PPC64_TOC16_HI
, /* type */
1005 16, /* rightshift */
1006 1, /* size (0 = byte, 1 = short, 2 = long) */
1008 FALSE
, /* pc_relative */
1010 complain_overflow_signed
, /* complain_on_overflow */
1011 ppc64_elf_toc_reloc
, /* special_function */
1012 "R_PPC64_TOC16_HI", /* name */
1013 FALSE
, /* partial_inplace */
1015 0xffff, /* dst_mask */
1016 FALSE
), /* pcrel_offset */
1018 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1019 contents of the low 16 bits, treated as a signed number, is
1022 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1023 HOWTO (R_PPC64_TOC16_HA
, /* type */
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_signed
, /* complain_on_overflow */
1030 ppc64_elf_toc_ha_reloc
, /* special_function */
1031 "R_PPC64_TOC16_HA", /* name */
1032 FALSE
, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1037 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1039 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1040 HOWTO (R_PPC64_TOC
, /* type */
1042 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1044 FALSE
, /* pc_relative */
1046 complain_overflow_dont
, /* complain_on_overflow */
1047 ppc64_elf_toc64_reloc
, /* special_function */
1048 "R_PPC64_TOC", /* name */
1049 FALSE
, /* partial_inplace */
1051 ONES (64), /* dst_mask */
1052 FALSE
), /* pcrel_offset */
1054 /* Like R_PPC64_GOT16, but also informs the link editor that the
1055 value to relocate may (!) refer to a PLT entry which the link
1056 editor (a) may replace with the symbol value. If the link editor
1057 is unable to fully resolve the symbol, it may (b) create a PLT
1058 entry and store the address to the new PLT entry in the GOT.
1059 This permits lazy resolution of function symbols at run time.
1060 The link editor may also skip all of this and just (c) emit a
1061 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1062 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16
, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE
, /* pc_relative */
1069 complain_overflow_signed
, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc
, /* special_function */
1071 "R_PPC64_PLTGOT16", /* name */
1072 FALSE
, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE
), /* pcrel_offset */
1077 /* Like R_PPC64_PLTGOT16, but without overflow. */
1078 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE
, /* pc_relative */
1085 complain_overflow_dont
, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc
, /* special_function */
1087 "R_PPC64_PLTGOT16_LO", /* name */
1088 FALSE
, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE
), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1094 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1095 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_signed
, /* complain_on_overflow */
1102 ppc64_elf_unhandled_reloc
, /* special_function */
1103 "R_PPC64_PLTGOT16_HI", /* name */
1104 FALSE
, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE
), /* pcrel_offset */
1109 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1110 1 if the contents of the low 16 bits, treated as a signed number,
1112 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1113 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1114 16, /* rightshift */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 FALSE
, /* pc_relative */
1119 complain_overflow_signed
, /* complain_on_overflow */
1120 ppc64_elf_unhandled_reloc
, /* special_function */
1121 "R_PPC64_PLTGOT16_HA", /* name */
1122 FALSE
, /* partial_inplace */
1124 0xffff, /* dst_mask */
1125 FALSE
), /* pcrel_offset */
1127 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1128 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1130 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 FALSE
, /* pc_relative */
1134 complain_overflow_signed
, /* complain_on_overflow */
1135 bfd_elf_generic_reloc
, /* special_function */
1136 "R_PPC64_ADDR16_DS", /* name */
1137 FALSE
, /* partial_inplace */
1139 0xfffc, /* dst_mask */
1140 FALSE
), /* pcrel_offset */
1142 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1143 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1145 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 FALSE
, /* pc_relative */
1149 complain_overflow_dont
,/* complain_on_overflow */
1150 bfd_elf_generic_reloc
, /* special_function */
1151 "R_PPC64_ADDR16_LO_DS",/* name */
1152 FALSE
, /* partial_inplace */
1154 0xfffc, /* dst_mask */
1155 FALSE
), /* pcrel_offset */
1157 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1158 HOWTO (R_PPC64_GOT16_DS
, /* type */
1160 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 FALSE
, /* pc_relative */
1164 complain_overflow_signed
, /* complain_on_overflow */
1165 ppc64_elf_unhandled_reloc
, /* special_function */
1166 "R_PPC64_GOT16_DS", /* name */
1167 FALSE
, /* partial_inplace */
1169 0xfffc, /* dst_mask */
1170 FALSE
), /* pcrel_offset */
1172 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1173 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1175 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 FALSE
, /* pc_relative */
1179 complain_overflow_dont
, /* complain_on_overflow */
1180 ppc64_elf_unhandled_reloc
, /* special_function */
1181 "R_PPC64_GOT16_LO_DS", /* name */
1182 FALSE
, /* partial_inplace */
1184 0xfffc, /* dst_mask */
1185 FALSE
), /* pcrel_offset */
1187 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1188 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1190 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 FALSE
, /* pc_relative */
1194 complain_overflow_dont
, /* complain_on_overflow */
1195 ppc64_elf_unhandled_reloc
, /* special_function */
1196 "R_PPC64_PLT16_LO_DS", /* name */
1197 FALSE
, /* partial_inplace */
1199 0xfffc, /* dst_mask */
1200 FALSE
), /* pcrel_offset */
1202 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1203 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1205 1, /* size (0 = byte, 1 = short, 2 = long) */
1207 FALSE
, /* pc_relative */
1209 complain_overflow_signed
, /* complain_on_overflow */
1210 ppc64_elf_sectoff_reloc
, /* special_function */
1211 "R_PPC64_SECTOFF_DS", /* name */
1212 FALSE
, /* partial_inplace */
1214 0xfffc, /* dst_mask */
1215 FALSE
), /* pcrel_offset */
1217 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1218 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1220 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE
, /* pc_relative */
1224 complain_overflow_dont
, /* complain_on_overflow */
1225 ppc64_elf_sectoff_reloc
, /* special_function */
1226 "R_PPC64_SECTOFF_LO_DS",/* name */
1227 FALSE
, /* partial_inplace */
1229 0xfffc, /* dst_mask */
1230 FALSE
), /* pcrel_offset */
1232 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1233 HOWTO (R_PPC64_TOC16_DS
, /* type */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE
, /* pc_relative */
1239 complain_overflow_signed
, /* complain_on_overflow */
1240 ppc64_elf_toc_reloc
, /* special_function */
1241 "R_PPC64_TOC16_DS", /* name */
1242 FALSE
, /* partial_inplace */
1244 0xfffc, /* dst_mask */
1245 FALSE
), /* pcrel_offset */
1247 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1248 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE
, /* pc_relative */
1254 complain_overflow_dont
, /* complain_on_overflow */
1255 ppc64_elf_toc_reloc
, /* special_function */
1256 "R_PPC64_TOC16_LO_DS", /* name */
1257 FALSE
, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE
), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE
, /* pc_relative */
1270 complain_overflow_signed
, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc
, /* special_function */
1272 "R_PPC64_PLTGOT16_DS", /* name */
1273 FALSE
, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE
), /* pcrel_offset */
1278 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1279 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1280 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_dont
, /* complain_on_overflow */
1287 ppc64_elf_unhandled_reloc
, /* special_function */
1288 "R_PPC64_PLTGOT16_LO_DS",/* name */
1289 FALSE
, /* partial_inplace */
1291 0xfffc, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 /* Marker relocs for TLS. */
1297 2, /* size (0 = byte, 1 = short, 2 = long) */
1299 FALSE
, /* pc_relative */
1301 complain_overflow_dont
, /* complain_on_overflow */
1302 bfd_elf_generic_reloc
, /* special_function */
1303 "R_PPC64_TLS", /* name */
1304 FALSE
, /* partial_inplace */
1307 FALSE
), /* pcrel_offset */
1309 HOWTO (R_PPC64_TLSGD
,
1311 2, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE
, /* pc_relative */
1315 complain_overflow_dont
, /* complain_on_overflow */
1316 bfd_elf_generic_reloc
, /* special_function */
1317 "R_PPC64_TLSGD", /* name */
1318 FALSE
, /* partial_inplace */
1321 FALSE
), /* pcrel_offset */
1323 HOWTO (R_PPC64_TLSLD
,
1325 2, /* size (0 = byte, 1 = short, 2 = long) */
1327 FALSE
, /* pc_relative */
1329 complain_overflow_dont
, /* complain_on_overflow */
1330 bfd_elf_generic_reloc
, /* special_function */
1331 "R_PPC64_TLSLD", /* name */
1332 FALSE
, /* partial_inplace */
1335 FALSE
), /* pcrel_offset */
1337 HOWTO (R_PPC64_TOCSAVE
,
1339 2, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE
, /* pc_relative */
1343 complain_overflow_dont
, /* complain_on_overflow */
1344 bfd_elf_generic_reloc
, /* special_function */
1345 "R_PPC64_TOCSAVE", /* name */
1346 FALSE
, /* partial_inplace */
1349 FALSE
), /* pcrel_offset */
1351 /* Computes the load module index of the load module that contains the
1352 definition of its TLS sym. */
1353 HOWTO (R_PPC64_DTPMOD64
,
1355 4, /* size (0 = byte, 1 = short, 2 = long) */
1357 FALSE
, /* pc_relative */
1359 complain_overflow_dont
, /* complain_on_overflow */
1360 ppc64_elf_unhandled_reloc
, /* special_function */
1361 "R_PPC64_DTPMOD64", /* name */
1362 FALSE
, /* partial_inplace */
1364 ONES (64), /* dst_mask */
1365 FALSE
), /* pcrel_offset */
1367 /* Computes a dtv-relative displacement, the difference between the value
1368 of sym+add and the base address of the thread-local storage block that
1369 contains the definition of sym, minus 0x8000. */
1370 HOWTO (R_PPC64_DTPREL64
,
1372 4, /* size (0 = byte, 1 = short, 2 = long) */
1374 FALSE
, /* pc_relative */
1376 complain_overflow_dont
, /* complain_on_overflow */
1377 ppc64_elf_unhandled_reloc
, /* special_function */
1378 "R_PPC64_DTPREL64", /* name */
1379 FALSE
, /* partial_inplace */
1381 ONES (64), /* dst_mask */
1382 FALSE
), /* pcrel_offset */
1384 /* A 16 bit dtprel reloc. */
1385 HOWTO (R_PPC64_DTPREL16
,
1387 1, /* size (0 = byte, 1 = short, 2 = long) */
1389 FALSE
, /* pc_relative */
1391 complain_overflow_signed
, /* complain_on_overflow */
1392 ppc64_elf_unhandled_reloc
, /* special_function */
1393 "R_PPC64_DTPREL16", /* name */
1394 FALSE
, /* partial_inplace */
1396 0xffff, /* dst_mask */
1397 FALSE
), /* pcrel_offset */
1399 /* Like DTPREL16, but no overflow. */
1400 HOWTO (R_PPC64_DTPREL16_LO
,
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 FALSE
, /* pc_relative */
1406 complain_overflow_dont
, /* complain_on_overflow */
1407 ppc64_elf_unhandled_reloc
, /* special_function */
1408 "R_PPC64_DTPREL16_LO", /* name */
1409 FALSE
, /* partial_inplace */
1411 0xffff, /* dst_mask */
1412 FALSE
), /* pcrel_offset */
1414 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1415 HOWTO (R_PPC64_DTPREL16_HI
,
1416 16, /* rightshift */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 FALSE
, /* pc_relative */
1421 complain_overflow_signed
, /* complain_on_overflow */
1422 ppc64_elf_unhandled_reloc
, /* special_function */
1423 "R_PPC64_DTPREL16_HI", /* name */
1424 FALSE
, /* partial_inplace */
1426 0xffff, /* dst_mask */
1427 FALSE
), /* pcrel_offset */
1429 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1430 HOWTO (R_PPC64_DTPREL16_HA
,
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 FALSE
, /* pc_relative */
1436 complain_overflow_signed
, /* complain_on_overflow */
1437 ppc64_elf_unhandled_reloc
, /* special_function */
1438 "R_PPC64_DTPREL16_HA", /* name */
1439 FALSE
, /* partial_inplace */
1441 0xffff, /* dst_mask */
1442 FALSE
), /* pcrel_offset */
1444 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1445 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1446 32, /* rightshift */
1447 1, /* size (0 = byte, 1 = short, 2 = long) */
1449 FALSE
, /* pc_relative */
1451 complain_overflow_dont
, /* complain_on_overflow */
1452 ppc64_elf_unhandled_reloc
, /* special_function */
1453 "R_PPC64_DTPREL16_HIGHER", /* name */
1454 FALSE
, /* partial_inplace */
1456 0xffff, /* dst_mask */
1457 FALSE
), /* pcrel_offset */
1459 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1460 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1461 32, /* rightshift */
1462 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 FALSE
, /* pc_relative */
1466 complain_overflow_dont
, /* complain_on_overflow */
1467 ppc64_elf_unhandled_reloc
, /* special_function */
1468 "R_PPC64_DTPREL16_HIGHERA", /* name */
1469 FALSE
, /* partial_inplace */
1471 0xffff, /* dst_mask */
1472 FALSE
), /* pcrel_offset */
1474 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1475 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1476 48, /* rightshift */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 FALSE
, /* pc_relative */
1481 complain_overflow_dont
, /* complain_on_overflow */
1482 ppc64_elf_unhandled_reloc
, /* special_function */
1483 "R_PPC64_DTPREL16_HIGHEST", /* name */
1484 FALSE
, /* partial_inplace */
1486 0xffff, /* dst_mask */
1487 FALSE
), /* pcrel_offset */
1489 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1490 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1491 48, /* rightshift */
1492 1, /* size (0 = byte, 1 = short, 2 = long) */
1494 FALSE
, /* pc_relative */
1496 complain_overflow_dont
, /* complain_on_overflow */
1497 ppc64_elf_unhandled_reloc
, /* special_function */
1498 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1499 FALSE
, /* partial_inplace */
1501 0xffff, /* dst_mask */
1502 FALSE
), /* pcrel_offset */
1504 /* Like DTPREL16, but for insns with a DS field. */
1505 HOWTO (R_PPC64_DTPREL16_DS
,
1507 1, /* size (0 = byte, 1 = short, 2 = long) */
1509 FALSE
, /* pc_relative */
1511 complain_overflow_signed
, /* complain_on_overflow */
1512 ppc64_elf_unhandled_reloc
, /* special_function */
1513 "R_PPC64_DTPREL16_DS", /* name */
1514 FALSE
, /* partial_inplace */
1516 0xfffc, /* dst_mask */
1517 FALSE
), /* pcrel_offset */
1519 /* Like DTPREL16_DS, but no overflow. */
1520 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1522 1, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE
, /* pc_relative */
1526 complain_overflow_dont
, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc
, /* special_function */
1528 "R_PPC64_DTPREL16_LO_DS", /* name */
1529 FALSE
, /* partial_inplace */
1531 0xfffc, /* dst_mask */
1532 FALSE
), /* pcrel_offset */
1534 /* Computes a tp-relative displacement, the difference between the value of
1535 sym+add and the value of the thread pointer (r13). */
1536 HOWTO (R_PPC64_TPREL64
,
1538 4, /* size (0 = byte, 1 = short, 2 = long) */
1540 FALSE
, /* pc_relative */
1542 complain_overflow_dont
, /* complain_on_overflow */
1543 ppc64_elf_unhandled_reloc
, /* special_function */
1544 "R_PPC64_TPREL64", /* name */
1545 FALSE
, /* partial_inplace */
1547 ONES (64), /* dst_mask */
1548 FALSE
), /* pcrel_offset */
1550 /* A 16 bit tprel reloc. */
1551 HOWTO (R_PPC64_TPREL16
,
1553 1, /* size (0 = byte, 1 = short, 2 = long) */
1555 FALSE
, /* pc_relative */
1557 complain_overflow_signed
, /* complain_on_overflow */
1558 ppc64_elf_unhandled_reloc
, /* special_function */
1559 "R_PPC64_TPREL16", /* name */
1560 FALSE
, /* partial_inplace */
1562 0xffff, /* dst_mask */
1563 FALSE
), /* pcrel_offset */
1565 /* Like TPREL16, but no overflow. */
1566 HOWTO (R_PPC64_TPREL16_LO
,
1568 1, /* size (0 = byte, 1 = short, 2 = long) */
1570 FALSE
, /* pc_relative */
1572 complain_overflow_dont
, /* complain_on_overflow */
1573 ppc64_elf_unhandled_reloc
, /* special_function */
1574 "R_PPC64_TPREL16_LO", /* name */
1575 FALSE
, /* partial_inplace */
1577 0xffff, /* dst_mask */
1578 FALSE
), /* pcrel_offset */
1580 /* Like TPREL16_LO, but next higher group of 16 bits. */
1581 HOWTO (R_PPC64_TPREL16_HI
,
1582 16, /* rightshift */
1583 1, /* size (0 = byte, 1 = short, 2 = long) */
1585 FALSE
, /* pc_relative */
1587 complain_overflow_signed
, /* complain_on_overflow */
1588 ppc64_elf_unhandled_reloc
, /* special_function */
1589 "R_PPC64_TPREL16_HI", /* name */
1590 FALSE
, /* partial_inplace */
1592 0xffff, /* dst_mask */
1593 FALSE
), /* pcrel_offset */
1595 /* Like TPREL16_HI, but adjust for low 16 bits. */
1596 HOWTO (R_PPC64_TPREL16_HA
,
1597 16, /* rightshift */
1598 1, /* size (0 = byte, 1 = short, 2 = long) */
1600 FALSE
, /* pc_relative */
1602 complain_overflow_signed
, /* complain_on_overflow */
1603 ppc64_elf_unhandled_reloc
, /* special_function */
1604 "R_PPC64_TPREL16_HA", /* name */
1605 FALSE
, /* partial_inplace */
1607 0xffff, /* dst_mask */
1608 FALSE
), /* pcrel_offset */
1610 /* Like TPREL16_HI, but next higher group of 16 bits. */
1611 HOWTO (R_PPC64_TPREL16_HIGHER
,
1612 32, /* rightshift */
1613 1, /* size (0 = byte, 1 = short, 2 = long) */
1615 FALSE
, /* pc_relative */
1617 complain_overflow_dont
, /* complain_on_overflow */
1618 ppc64_elf_unhandled_reloc
, /* special_function */
1619 "R_PPC64_TPREL16_HIGHER", /* name */
1620 FALSE
, /* partial_inplace */
1622 0xffff, /* dst_mask */
1623 FALSE
), /* pcrel_offset */
1625 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1626 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1627 32, /* rightshift */
1628 1, /* size (0 = byte, 1 = short, 2 = long) */
1630 FALSE
, /* pc_relative */
1632 complain_overflow_dont
, /* complain_on_overflow */
1633 ppc64_elf_unhandled_reloc
, /* special_function */
1634 "R_PPC64_TPREL16_HIGHERA", /* name */
1635 FALSE
, /* partial_inplace */
1637 0xffff, /* dst_mask */
1638 FALSE
), /* pcrel_offset */
1640 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1641 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1642 48, /* rightshift */
1643 1, /* size (0 = byte, 1 = short, 2 = long) */
1645 FALSE
, /* pc_relative */
1647 complain_overflow_dont
, /* complain_on_overflow */
1648 ppc64_elf_unhandled_reloc
, /* special_function */
1649 "R_PPC64_TPREL16_HIGHEST", /* name */
1650 FALSE
, /* partial_inplace */
1652 0xffff, /* dst_mask */
1653 FALSE
), /* pcrel_offset */
1655 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1656 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1657 48, /* rightshift */
1658 1, /* size (0 = byte, 1 = short, 2 = long) */
1660 FALSE
, /* pc_relative */
1662 complain_overflow_dont
, /* complain_on_overflow */
1663 ppc64_elf_unhandled_reloc
, /* special_function */
1664 "R_PPC64_TPREL16_HIGHESTA", /* name */
1665 FALSE
, /* partial_inplace */
1667 0xffff, /* dst_mask */
1668 FALSE
), /* pcrel_offset */
1670 /* Like TPREL16, but for insns with a DS field. */
1671 HOWTO (R_PPC64_TPREL16_DS
,
1673 1, /* size (0 = byte, 1 = short, 2 = long) */
1675 FALSE
, /* pc_relative */
1677 complain_overflow_signed
, /* complain_on_overflow */
1678 ppc64_elf_unhandled_reloc
, /* special_function */
1679 "R_PPC64_TPREL16_DS", /* name */
1680 FALSE
, /* partial_inplace */
1682 0xfffc, /* dst_mask */
1683 FALSE
), /* pcrel_offset */
1685 /* Like TPREL16_DS, but no overflow. */
1686 HOWTO (R_PPC64_TPREL16_LO_DS
,
1688 1, /* size (0 = byte, 1 = short, 2 = long) */
1690 FALSE
, /* pc_relative */
1692 complain_overflow_dont
, /* complain_on_overflow */
1693 ppc64_elf_unhandled_reloc
, /* special_function */
1694 "R_PPC64_TPREL16_LO_DS", /* name */
1695 FALSE
, /* partial_inplace */
1697 0xfffc, /* dst_mask */
1698 FALSE
), /* pcrel_offset */
1700 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1701 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1702 to the first entry relative to the TOC base (r2). */
1703 HOWTO (R_PPC64_GOT_TLSGD16
,
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 FALSE
, /* pc_relative */
1709 complain_overflow_signed
, /* complain_on_overflow */
1710 ppc64_elf_unhandled_reloc
, /* special_function */
1711 "R_PPC64_GOT_TLSGD16", /* name */
1712 FALSE
, /* partial_inplace */
1714 0xffff, /* dst_mask */
1715 FALSE
), /* pcrel_offset */
1717 /* Like GOT_TLSGD16, but no overflow. */
1718 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1720 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 FALSE
, /* pc_relative */
1724 complain_overflow_dont
, /* complain_on_overflow */
1725 ppc64_elf_unhandled_reloc
, /* special_function */
1726 "R_PPC64_GOT_TLSGD16_LO", /* name */
1727 FALSE
, /* partial_inplace */
1729 0xffff, /* dst_mask */
1730 FALSE
), /* pcrel_offset */
1732 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1733 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1734 16, /* rightshift */
1735 1, /* size (0 = byte, 1 = short, 2 = long) */
1737 FALSE
, /* pc_relative */
1739 complain_overflow_signed
, /* complain_on_overflow */
1740 ppc64_elf_unhandled_reloc
, /* special_function */
1741 "R_PPC64_GOT_TLSGD16_HI", /* name */
1742 FALSE
, /* partial_inplace */
1744 0xffff, /* dst_mask */
1745 FALSE
), /* pcrel_offset */
1747 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1748 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1749 16, /* rightshift */
1750 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 FALSE
, /* pc_relative */
1754 complain_overflow_signed
, /* complain_on_overflow */
1755 ppc64_elf_unhandled_reloc
, /* special_function */
1756 "R_PPC64_GOT_TLSGD16_HA", /* name */
1757 FALSE
, /* partial_inplace */
1759 0xffff, /* dst_mask */
1760 FALSE
), /* pcrel_offset */
1762 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1763 with values (sym+add)@dtpmod and zero, and computes the offset to the
1764 first entry relative to the TOC base (r2). */
1765 HOWTO (R_PPC64_GOT_TLSLD16
,
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE
, /* pc_relative */
1771 complain_overflow_signed
, /* complain_on_overflow */
1772 ppc64_elf_unhandled_reloc
, /* special_function */
1773 "R_PPC64_GOT_TLSLD16", /* name */
1774 FALSE
, /* partial_inplace */
1776 0xffff, /* dst_mask */
1777 FALSE
), /* pcrel_offset */
1779 /* Like GOT_TLSLD16, but no overflow. */
1780 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1782 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE
, /* pc_relative */
1786 complain_overflow_dont
, /* complain_on_overflow */
1787 ppc64_elf_unhandled_reloc
, /* special_function */
1788 "R_PPC64_GOT_TLSLD16_LO", /* name */
1789 FALSE
, /* partial_inplace */
1791 0xffff, /* dst_mask */
1792 FALSE
), /* pcrel_offset */
1794 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1795 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1796 16, /* rightshift */
1797 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 FALSE
, /* pc_relative */
1801 complain_overflow_signed
, /* complain_on_overflow */
1802 ppc64_elf_unhandled_reloc
, /* special_function */
1803 "R_PPC64_GOT_TLSLD16_HI", /* name */
1804 FALSE
, /* partial_inplace */
1806 0xffff, /* dst_mask */
1807 FALSE
), /* pcrel_offset */
1809 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1810 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1811 16, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE
, /* pc_relative */
1816 complain_overflow_signed
, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc
, /* special_function */
1818 "R_PPC64_GOT_TLSLD16_HA", /* name */
1819 FALSE
, /* partial_inplace */
1821 0xffff, /* dst_mask */
1822 FALSE
), /* pcrel_offset */
1824 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1825 the offset to the entry relative to the TOC base (r2). */
1826 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1828 1, /* size (0 = byte, 1 = short, 2 = long) */
1830 FALSE
, /* pc_relative */
1832 complain_overflow_signed
, /* complain_on_overflow */
1833 ppc64_elf_unhandled_reloc
, /* special_function */
1834 "R_PPC64_GOT_DTPREL16_DS", /* name */
1835 FALSE
, /* partial_inplace */
1837 0xfffc, /* dst_mask */
1838 FALSE
), /* pcrel_offset */
1840 /* Like GOT_DTPREL16_DS, but no overflow. */
1841 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1843 1, /* size (0 = byte, 1 = short, 2 = long) */
1845 FALSE
, /* pc_relative */
1847 complain_overflow_dont
, /* complain_on_overflow */
1848 ppc64_elf_unhandled_reloc
, /* special_function */
1849 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1850 FALSE
, /* partial_inplace */
1852 0xfffc, /* dst_mask */
1853 FALSE
), /* pcrel_offset */
1855 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1856 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1857 16, /* rightshift */
1858 1, /* size (0 = byte, 1 = short, 2 = long) */
1860 FALSE
, /* pc_relative */
1862 complain_overflow_signed
, /* complain_on_overflow */
1863 ppc64_elf_unhandled_reloc
, /* special_function */
1864 "R_PPC64_GOT_DTPREL16_HI", /* name */
1865 FALSE
, /* partial_inplace */
1867 0xffff, /* dst_mask */
1868 FALSE
), /* pcrel_offset */
1870 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1871 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1872 16, /* rightshift */
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE
, /* pc_relative */
1877 complain_overflow_signed
, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc
, /* special_function */
1879 "R_PPC64_GOT_DTPREL16_HA", /* name */
1880 FALSE
, /* partial_inplace */
1882 0xffff, /* dst_mask */
1883 FALSE
), /* pcrel_offset */
1885 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1886 offset to the entry relative to the TOC base (r2). */
1887 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1889 1, /* size (0 = byte, 1 = short, 2 = long) */
1891 FALSE
, /* pc_relative */
1893 complain_overflow_signed
, /* complain_on_overflow */
1894 ppc64_elf_unhandled_reloc
, /* special_function */
1895 "R_PPC64_GOT_TPREL16_DS", /* name */
1896 FALSE
, /* partial_inplace */
1898 0xfffc, /* dst_mask */
1899 FALSE
), /* pcrel_offset */
1901 /* Like GOT_TPREL16_DS, but no overflow. */
1902 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1904 1, /* size (0 = byte, 1 = short, 2 = long) */
1906 FALSE
, /* pc_relative */
1908 complain_overflow_dont
, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc
, /* special_function */
1910 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1911 FALSE
, /* partial_inplace */
1913 0xfffc, /* dst_mask */
1914 FALSE
), /* pcrel_offset */
1916 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1917 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1918 16, /* rightshift */
1919 1, /* size (0 = byte, 1 = short, 2 = long) */
1921 FALSE
, /* pc_relative */
1923 complain_overflow_signed
, /* complain_on_overflow */
1924 ppc64_elf_unhandled_reloc
, /* special_function */
1925 "R_PPC64_GOT_TPREL16_HI", /* name */
1926 FALSE
, /* partial_inplace */
1928 0xffff, /* dst_mask */
1929 FALSE
), /* pcrel_offset */
1931 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1932 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1933 16, /* rightshift */
1934 1, /* size (0 = byte, 1 = short, 2 = long) */
1936 FALSE
, /* pc_relative */
1938 complain_overflow_signed
, /* complain_on_overflow */
1939 ppc64_elf_unhandled_reloc
, /* special_function */
1940 "R_PPC64_GOT_TPREL16_HA", /* name */
1941 FALSE
, /* partial_inplace */
1943 0xffff, /* dst_mask */
1944 FALSE
), /* pcrel_offset */
1946 HOWTO (R_PPC64_JMP_IREL
, /* type */
1948 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1950 FALSE
, /* pc_relative */
1952 complain_overflow_dont
, /* complain_on_overflow */
1953 ppc64_elf_unhandled_reloc
, /* special_function */
1954 "R_PPC64_JMP_IREL", /* name */
1955 FALSE
, /* partial_inplace */
1958 FALSE
), /* pcrel_offset */
1960 HOWTO (R_PPC64_IRELATIVE
, /* type */
1962 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1964 FALSE
, /* pc_relative */
1966 complain_overflow_dont
, /* complain_on_overflow */
1967 bfd_elf_generic_reloc
, /* special_function */
1968 "R_PPC64_IRELATIVE", /* name */
1969 FALSE
, /* partial_inplace */
1971 ONES (64), /* dst_mask */
1972 FALSE
), /* pcrel_offset */
1974 /* A 16 bit relative relocation. */
1975 HOWTO (R_PPC64_REL16
, /* type */
1977 1, /* size (0 = byte, 1 = short, 2 = long) */
1979 TRUE
, /* pc_relative */
1981 complain_overflow_signed
, /* complain_on_overflow */
1982 bfd_elf_generic_reloc
, /* special_function */
1983 "R_PPC64_REL16", /* name */
1984 FALSE
, /* partial_inplace */
1986 0xffff, /* dst_mask */
1987 TRUE
), /* pcrel_offset */
1989 /* A 16 bit relative relocation without overflow. */
1990 HOWTO (R_PPC64_REL16_LO
, /* type */
1992 1, /* size (0 = byte, 1 = short, 2 = long) */
1994 TRUE
, /* pc_relative */
1996 complain_overflow_dont
,/* complain_on_overflow */
1997 bfd_elf_generic_reloc
, /* special_function */
1998 "R_PPC64_REL16_LO", /* name */
1999 FALSE
, /* partial_inplace */
2001 0xffff, /* dst_mask */
2002 TRUE
), /* pcrel_offset */
2004 /* The high order 16 bits of a relative address. */
2005 HOWTO (R_PPC64_REL16_HI
, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE
, /* pc_relative */
2011 complain_overflow_signed
, /* complain_on_overflow */
2012 bfd_elf_generic_reloc
, /* special_function */
2013 "R_PPC64_REL16_HI", /* name */
2014 FALSE
, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE
), /* pcrel_offset */
2019 /* The high order 16 bits of a relative address, plus 1 if the contents of
2020 the low 16 bits, treated as a signed number, is negative. */
2021 HOWTO (R_PPC64_REL16_HA
, /* type */
2022 16, /* rightshift */
2023 1, /* size (0 = byte, 1 = short, 2 = long) */
2025 TRUE
, /* pc_relative */
2027 complain_overflow_signed
, /* complain_on_overflow */
2028 ppc64_elf_ha_reloc
, /* special_function */
2029 "R_PPC64_REL16_HA", /* name */
2030 FALSE
, /* partial_inplace */
2032 0xffff, /* dst_mask */
2033 TRUE
), /* pcrel_offset */
2035 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2036 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2037 16, /* rightshift */
2038 2, /* size (0 = byte, 1 = short, 2 = long) */
2040 TRUE
, /* pc_relative */
2042 complain_overflow_signed
, /* complain_on_overflow */
2043 ppc64_elf_ha_reloc
, /* special_function */
2044 "R_PPC64_REL16DX_HA", /* name */
2045 FALSE
, /* partial_inplace */
2047 0x1fffc1, /* dst_mask */
2048 TRUE
), /* pcrel_offset */
2050 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2051 HOWTO (R_PPC64_16DX_HA
, /* type */
2052 16, /* rightshift */
2053 2, /* size (0 = byte, 1 = short, 2 = long) */
2055 FALSE
, /* pc_relative */
2057 complain_overflow_signed
, /* complain_on_overflow */
2058 ppc64_elf_ha_reloc
, /* special_function */
2059 "R_PPC64_16DX_HA", /* name */
2060 FALSE
, /* partial_inplace */
2062 0x1fffc1, /* dst_mask */
2063 FALSE
), /* pcrel_offset */
2065 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2066 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2067 16, /* rightshift */
2068 1, /* size (0 = byte, 1 = short, 2 = long) */
2070 FALSE
, /* pc_relative */
2072 complain_overflow_dont
, /* complain_on_overflow */
2073 bfd_elf_generic_reloc
, /* special_function */
2074 "R_PPC64_ADDR16_HIGH", /* name */
2075 FALSE
, /* partial_inplace */
2077 0xffff, /* dst_mask */
2078 FALSE
), /* pcrel_offset */
2080 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2081 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2082 16, /* rightshift */
2083 1, /* size (0 = byte, 1 = short, 2 = long) */
2085 FALSE
, /* pc_relative */
2087 complain_overflow_dont
, /* complain_on_overflow */
2088 ppc64_elf_ha_reloc
, /* special_function */
2089 "R_PPC64_ADDR16_HIGHA", /* name */
2090 FALSE
, /* partial_inplace */
2092 0xffff, /* dst_mask */
2093 FALSE
), /* pcrel_offset */
2095 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2096 HOWTO (R_PPC64_DTPREL16_HIGH
,
2097 16, /* rightshift */
2098 1, /* size (0 = byte, 1 = short, 2 = long) */
2100 FALSE
, /* pc_relative */
2102 complain_overflow_dont
, /* complain_on_overflow */
2103 ppc64_elf_unhandled_reloc
, /* special_function */
2104 "R_PPC64_DTPREL16_HIGH", /* name */
2105 FALSE
, /* partial_inplace */
2107 0xffff, /* dst_mask */
2108 FALSE
), /* pcrel_offset */
2110 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2111 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2112 16, /* rightshift */
2113 1, /* size (0 = byte, 1 = short, 2 = long) */
2115 FALSE
, /* pc_relative */
2117 complain_overflow_dont
, /* complain_on_overflow */
2118 ppc64_elf_unhandled_reloc
, /* special_function */
2119 "R_PPC64_DTPREL16_HIGHA", /* name */
2120 FALSE
, /* partial_inplace */
2122 0xffff, /* dst_mask */
2123 FALSE
), /* pcrel_offset */
2125 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2126 HOWTO (R_PPC64_TPREL16_HIGH
,
2127 16, /* rightshift */
2128 1, /* size (0 = byte, 1 = short, 2 = long) */
2130 FALSE
, /* pc_relative */
2132 complain_overflow_dont
, /* complain_on_overflow */
2133 ppc64_elf_unhandled_reloc
, /* special_function */
2134 "R_PPC64_TPREL16_HIGH", /* name */
2135 FALSE
, /* partial_inplace */
2137 0xffff, /* dst_mask */
2138 FALSE
), /* pcrel_offset */
2140 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2141 HOWTO (R_PPC64_TPREL16_HIGHA
,
2142 16, /* rightshift */
2143 1, /* size (0 = byte, 1 = short, 2 = long) */
2145 FALSE
, /* pc_relative */
2147 complain_overflow_dont
, /* complain_on_overflow */
2148 ppc64_elf_unhandled_reloc
, /* special_function */
2149 "R_PPC64_TPREL16_HIGHA", /* name */
2150 FALSE
, /* partial_inplace */
2152 0xffff, /* dst_mask */
2153 FALSE
), /* pcrel_offset */
2155 /* Marker reloc on ELFv2 large-model function entry. */
2156 HOWTO (R_PPC64_ENTRY
,
2158 2, /* size (0 = byte, 1 = short, 2 = long) */
2160 FALSE
, /* pc_relative */
2162 complain_overflow_dont
, /* complain_on_overflow */
2163 bfd_elf_generic_reloc
, /* special_function */
2164 "R_PPC64_ENTRY", /* name */
2165 FALSE
, /* partial_inplace */
2168 FALSE
), /* pcrel_offset */
2170 /* Like ADDR64, but use local entry point of function. */
2171 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2173 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2175 FALSE
, /* pc_relative */
2177 complain_overflow_dont
, /* complain_on_overflow */
2178 bfd_elf_generic_reloc
, /* special_function */
2179 "R_PPC64_ADDR64_LOCAL", /* name */
2180 FALSE
, /* partial_inplace */
2182 ONES (64), /* dst_mask */
2183 FALSE
), /* pcrel_offset */
2185 /* GNU extension to record C++ vtable hierarchy. */
2186 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2188 0, /* size (0 = byte, 1 = short, 2 = long) */
2190 FALSE
, /* pc_relative */
2192 complain_overflow_dont
, /* complain_on_overflow */
2193 NULL
, /* special_function */
2194 "R_PPC64_GNU_VTINHERIT", /* name */
2195 FALSE
, /* partial_inplace */
2198 FALSE
), /* pcrel_offset */
2200 /* GNU extension to record C++ vtable member usage. */
2201 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2203 0, /* size (0 = byte, 1 = short, 2 = long) */
2205 FALSE
, /* pc_relative */
2207 complain_overflow_dont
, /* complain_on_overflow */
2208 NULL
, /* special_function */
2209 "R_PPC64_GNU_VTENTRY", /* name */
2210 FALSE
, /* partial_inplace */
2213 FALSE
), /* pcrel_offset */
2217 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2221 ppc_howto_init (void)
2223 unsigned int i
, type
;
2225 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2227 type
= ppc64_elf_howto_raw
[i
].type
;
2228 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2229 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2233 static reloc_howto_type
*
2234 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2235 bfd_reloc_code_real_type code
)
2237 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2239 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2240 /* Initialize howto table if needed. */
2248 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2250 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2252 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2254 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2256 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2258 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2260 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2262 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2264 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2266 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2268 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2270 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2272 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2274 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2276 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2278 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2280 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2282 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2284 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2286 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2288 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2290 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2292 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2294 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2296 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2298 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2300 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2302 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2304 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2306 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2308 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2310 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2312 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2314 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2316 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2318 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2320 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2322 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2324 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2326 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2328 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2330 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2332 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2334 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2336 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2338 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2340 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2342 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2344 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2346 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2348 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2350 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2352 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2354 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2356 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2358 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2360 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2362 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2364 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2366 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2368 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2370 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2372 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2374 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2376 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2378 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2380 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2382 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2384 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2386 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2390 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2392 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2394 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2396 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2400 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2404 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2406 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2408 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2410 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2412 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2414 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2416 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2418 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2420 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2422 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2424 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2426 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2428 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2430 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2432 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2434 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2436 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2438 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2440 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2442 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2444 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2446 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2448 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2450 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2452 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2454 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2456 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2458 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2460 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2462 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2464 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2466 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2468 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2470 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC64_16DX_HA
;
2472 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2474 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2476 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2478 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2480 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2484 return ppc64_elf_howto_table
[r
];
2487 static reloc_howto_type
*
2488 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2493 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2494 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2495 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2496 return &ppc64_elf_howto_raw
[i
];
2501 /* Set the howto pointer for a PowerPC ELF reloc. */
2504 ppc64_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
2505 Elf_Internal_Rela
*dst
)
2509 /* Initialize howto table if needed. */
2510 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2513 type
= ELF64_R_TYPE (dst
->r_info
);
2514 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2516 /* xgettext:c-format */
2517 _bfd_error_handler (_("%B: invalid relocation type %d"),
2519 type
= R_PPC64_NONE
;
2521 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2524 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2526 static bfd_reloc_status_type
2527 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2528 void *data
, asection
*input_section
,
2529 bfd
*output_bfd
, char **error_message
)
2531 enum elf_ppc64_reloc_type r_type
;
2533 bfd_size_type octets
;
2536 /* If this is a relocatable link (output_bfd test tells us), just
2537 call the generic function. Any adjustment will be done at final
2539 if (output_bfd
!= NULL
)
2540 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2541 input_section
, output_bfd
, error_message
);
2543 /* Adjust the addend for sign extension of the low 16 bits.
2544 We won't actually be using the low 16 bits, so trashing them
2546 reloc_entry
->addend
+= 0x8000;
2547 r_type
= reloc_entry
->howto
->type
;
2548 if (r_type
!= R_PPC64_REL16DX_HA
)
2549 return bfd_reloc_continue
;
2552 if (!bfd_is_com_section (symbol
->section
))
2553 value
= symbol
->value
;
2554 value
+= (reloc_entry
->addend
2555 + symbol
->section
->output_offset
2556 + symbol
->section
->output_section
->vma
);
2557 value
-= (reloc_entry
->address
2558 + input_section
->output_offset
2559 + input_section
->output_section
->vma
);
2560 value
= (bfd_signed_vma
) value
>> 16;
2562 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2563 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2565 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2566 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2567 if (value
+ 0x8000 > 0xffff)
2568 return bfd_reloc_overflow
;
2569 return bfd_reloc_ok
;
2572 static bfd_reloc_status_type
2573 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2574 void *data
, asection
*input_section
,
2575 bfd
*output_bfd
, char **error_message
)
2577 if (output_bfd
!= NULL
)
2578 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2579 input_section
, output_bfd
, error_message
);
2581 if (strcmp (symbol
->section
->name
, ".opd") == 0
2582 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2584 bfd_vma dest
= opd_entry_value (symbol
->section
,
2585 symbol
->value
+ reloc_entry
->addend
,
2587 if (dest
!= (bfd_vma
) -1)
2588 reloc_entry
->addend
= dest
- (symbol
->value
2589 + symbol
->section
->output_section
->vma
2590 + symbol
->section
->output_offset
);
2594 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2596 if (symbol
->section
->owner
!= abfd
2597 && symbol
->section
->owner
!= NULL
2598 && abiversion (symbol
->section
->owner
) >= 2)
2602 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2604 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2606 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2608 elfsym
= (elf_symbol_type
*) symdef
;
2614 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2616 return bfd_reloc_continue
;
2619 static bfd_reloc_status_type
2620 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2621 void *data
, asection
*input_section
,
2622 bfd
*output_bfd
, char **error_message
)
2625 enum elf_ppc64_reloc_type r_type
;
2626 bfd_size_type octets
;
2627 /* Assume 'at' branch hints. */
2628 bfd_boolean is_isa_v2
= TRUE
;
2630 /* If this is a relocatable link (output_bfd test tells us), just
2631 call the generic function. Any adjustment will be done at final
2633 if (output_bfd
!= NULL
)
2634 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2635 input_section
, output_bfd
, error_message
);
2637 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2638 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2639 insn
&= ~(0x01 << 21);
2640 r_type
= reloc_entry
->howto
->type
;
2641 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2642 || r_type
== R_PPC64_REL14_BRTAKEN
)
2643 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2647 /* Set 'a' bit. This is 0b00010 in BO field for branch
2648 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2649 for branch on CTR insns (BO == 1a00t or 1a01t). */
2650 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2652 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2662 if (!bfd_is_com_section (symbol
->section
))
2663 target
= symbol
->value
;
2664 target
+= symbol
->section
->output_section
->vma
;
2665 target
+= symbol
->section
->output_offset
;
2666 target
+= reloc_entry
->addend
;
2668 from
= (reloc_entry
->address
2669 + input_section
->output_offset
2670 + input_section
->output_section
->vma
);
2672 /* Invert 'y' bit if not the default. */
2673 if ((bfd_signed_vma
) (target
- from
) < 0)
2676 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2678 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2679 input_section
, output_bfd
, error_message
);
2682 static bfd_reloc_status_type
2683 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2684 void *data
, asection
*input_section
,
2685 bfd
*output_bfd
, char **error_message
)
2687 /* If this is a relocatable link (output_bfd test tells us), just
2688 call the generic function. Any adjustment will be done at final
2690 if (output_bfd
!= NULL
)
2691 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2692 input_section
, output_bfd
, error_message
);
2694 /* Subtract the symbol section base address. */
2695 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2696 return bfd_reloc_continue
;
2699 static bfd_reloc_status_type
2700 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2701 void *data
, asection
*input_section
,
2702 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 /* Subtract the symbol section base address. */
2712 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2714 /* Adjust the addend for sign extension of the low 16 bits. */
2715 reloc_entry
->addend
+= 0x8000;
2716 return bfd_reloc_continue
;
2719 static bfd_reloc_status_type
2720 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2721 void *data
, asection
*input_section
,
2722 bfd
*output_bfd
, char **error_message
)
2726 /* If this is a relocatable link (output_bfd test tells us), just
2727 call the generic function. Any adjustment will be done at final
2729 if (output_bfd
!= NULL
)
2730 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2731 input_section
, output_bfd
, error_message
);
2733 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2735 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2737 /* Subtract the TOC base address. */
2738 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2739 return bfd_reloc_continue
;
2742 static bfd_reloc_status_type
2743 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2744 void *data
, asection
*input_section
,
2745 bfd
*output_bfd
, char **error_message
)
2749 /* If this is a relocatable link (output_bfd test tells us), just
2750 call the generic function. Any adjustment will be done at final
2752 if (output_bfd
!= NULL
)
2753 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2754 input_section
, output_bfd
, error_message
);
2756 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2758 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2760 /* Subtract the TOC base address. */
2761 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2763 /* Adjust the addend for sign extension of the low 16 bits. */
2764 reloc_entry
->addend
+= 0x8000;
2765 return bfd_reloc_continue
;
2768 static bfd_reloc_status_type
2769 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2770 void *data
, asection
*input_section
,
2771 bfd
*output_bfd
, char **error_message
)
2774 bfd_size_type octets
;
2776 /* If this is a relocatable link (output_bfd test tells us), just
2777 call the generic function. Any adjustment will be done at final
2779 if (output_bfd
!= NULL
)
2780 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2781 input_section
, output_bfd
, error_message
);
2783 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2785 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2787 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2788 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2789 return bfd_reloc_ok
;
2792 static bfd_reloc_status_type
2793 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2794 void *data
, asection
*input_section
,
2795 bfd
*output_bfd
, char **error_message
)
2797 /* If this is a relocatable link (output_bfd test tells us), just
2798 call the generic function. Any adjustment will be done at final
2800 if (output_bfd
!= NULL
)
2801 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2802 input_section
, output_bfd
, error_message
);
2804 if (error_message
!= NULL
)
2806 static char buf
[60];
2807 sprintf (buf
, "generic linker can't handle %s",
2808 reloc_entry
->howto
->name
);
2809 *error_message
= buf
;
2811 return bfd_reloc_dangerous
;
2814 /* Track GOT entries needed for a given symbol. We might need more
2815 than one got entry per symbol. */
2818 struct got_entry
*next
;
2820 /* The symbol addend that we'll be placing in the GOT. */
2823 /* Unlike other ELF targets, we use separate GOT entries for the same
2824 symbol referenced from different input files. This is to support
2825 automatic multiple TOC/GOT sections, where the TOC base can vary
2826 from one input file to another. After partitioning into TOC groups
2827 we merge entries within the group.
2829 Point to the BFD owning this GOT entry. */
2832 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2833 TLS_TPREL or TLS_DTPREL for tls entries. */
2834 unsigned char tls_type
;
2836 /* Non-zero if got.ent points to real entry. */
2837 unsigned char is_indirect
;
2839 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2842 bfd_signed_vma refcount
;
2844 struct got_entry
*ent
;
2848 /* The same for PLT. */
2851 struct plt_entry
*next
;
2857 bfd_signed_vma refcount
;
2862 struct ppc64_elf_obj_tdata
2864 struct elf_obj_tdata elf
;
2866 /* Shortcuts to dynamic linker sections. */
2870 /* Used during garbage collection. We attach global symbols defined
2871 on removed .opd entries to this section so that the sym is removed. */
2872 asection
*deleted_section
;
2874 /* TLS local dynamic got entry handling. Support for multiple GOT
2875 sections means we potentially need one of these for each input bfd. */
2876 struct got_entry tlsld_got
;
2879 /* A copy of relocs before they are modified for --emit-relocs. */
2880 Elf_Internal_Rela
*relocs
;
2882 /* Section contents. */
2886 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2887 the reloc to be in the range -32768 to 32767. */
2888 unsigned int has_small_toc_reloc
: 1;
2890 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2891 instruction not one we handle. */
2892 unsigned int unexpected_toc_insn
: 1;
2895 #define ppc64_elf_tdata(bfd) \
2896 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2898 #define ppc64_tlsld_got(bfd) \
2899 (&ppc64_elf_tdata (bfd)->tlsld_got)
2901 #define is_ppc64_elf(bfd) \
2902 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2903 && elf_object_id (bfd) == PPC64_ELF_DATA)
2905 /* Override the generic function because we store some extras. */
2908 ppc64_elf_mkobject (bfd
*abfd
)
2910 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2914 /* Fix bad default arch selected for a 64 bit input bfd when the
2915 default is 32 bit. Also select arch based on apuinfo. */
2918 ppc64_elf_object_p (bfd
*abfd
)
2920 if (!abfd
->arch_info
->the_default
)
2923 if (abfd
->arch_info
->bits_per_word
== 32)
2925 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2927 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2929 /* Relies on arch after 32 bit default being 64 bit default. */
2930 abfd
->arch_info
= abfd
->arch_info
->next
;
2931 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2934 return _bfd_elf_ppc_set_arch (abfd
);
2937 /* Support for core dump NOTE sections. */
2940 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2942 size_t offset
, size
;
2944 if (note
->descsz
!= 504)
2948 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2951 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2957 /* Make a ".reg/999" section. */
2958 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2959 size
, note
->descpos
+ offset
);
2963 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2965 if (note
->descsz
!= 136)
2968 elf_tdata (abfd
)->core
->pid
2969 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2970 elf_tdata (abfd
)->core
->program
2971 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2972 elf_tdata (abfd
)->core
->command
2973 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2979 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2992 va_start (ap
, note_type
);
2993 memset (data
, 0, sizeof (data
));
2994 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2995 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2997 return elfcore_write_note (abfd
, buf
, bufsiz
,
2998 "CORE", note_type
, data
, sizeof (data
));
3009 va_start (ap
, note_type
);
3010 memset (data
, 0, 112);
3011 pid
= va_arg (ap
, long);
3012 bfd_put_32 (abfd
, pid
, data
+ 32);
3013 cursig
= va_arg (ap
, int);
3014 bfd_put_16 (abfd
, cursig
, data
+ 12);
3015 greg
= va_arg (ap
, const void *);
3016 memcpy (data
+ 112, greg
, 384);
3017 memset (data
+ 496, 0, 8);
3019 return elfcore_write_note (abfd
, buf
, bufsiz
,
3020 "CORE", note_type
, data
, sizeof (data
));
3025 /* Add extra PPC sections. */
3027 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3029 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3030 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3031 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3032 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3033 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3034 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3035 { NULL
, 0, 0, 0, 0 }
3038 enum _ppc64_sec_type
{
3044 struct _ppc64_elf_section_data
3046 struct bfd_elf_section_data elf
;
3050 /* An array with one entry for each opd function descriptor,
3051 and some spares since opd entries may be either 16 or 24 bytes. */
3052 #define OPD_NDX(OFF) ((OFF) >> 4)
3053 struct _opd_sec_data
3055 /* Points to the function code section for local opd entries. */
3056 asection
**func_sec
;
3058 /* After editing .opd, adjust references to opd local syms. */
3062 /* An array for toc sections, indexed by offset/8. */
3063 struct _toc_sec_data
3065 /* Specifies the relocation symbol index used at a given toc offset. */
3068 /* And the relocation addend. */
3073 enum _ppc64_sec_type sec_type
:2;
3075 /* Flag set when small branches are detected. Used to
3076 select suitable defaults for the stub group size. */
3077 unsigned int has_14bit_branch
:1;
3080 #define ppc64_elf_section_data(sec) \
3081 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3084 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3086 if (!sec
->used_by_bfd
)
3088 struct _ppc64_elf_section_data
*sdata
;
3089 bfd_size_type amt
= sizeof (*sdata
);
3091 sdata
= bfd_zalloc (abfd
, amt
);
3094 sec
->used_by_bfd
= sdata
;
3097 return _bfd_elf_new_section_hook (abfd
, sec
);
3100 static struct _opd_sec_data
*
3101 get_opd_info (asection
* sec
)
3104 && ppc64_elf_section_data (sec
) != NULL
3105 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3106 return &ppc64_elf_section_data (sec
)->u
.opd
;
3110 /* Parameters for the qsort hook. */
3111 static bfd_boolean synthetic_relocatable
;
3112 static asection
*synthetic_opd
;
3114 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3117 compare_symbols (const void *ap
, const void *bp
)
3119 const asymbol
*a
= * (const asymbol
**) ap
;
3120 const asymbol
*b
= * (const asymbol
**) bp
;
3122 /* Section symbols first. */
3123 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3125 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3128 /* then .opd symbols. */
3129 if (synthetic_opd
!= NULL
)
3131 if (strcmp (a
->section
->name
, ".opd") == 0
3132 && strcmp (b
->section
->name
, ".opd") != 0)
3134 if (strcmp (a
->section
->name
, ".opd") != 0
3135 && strcmp (b
->section
->name
, ".opd") == 0)
3139 /* then other code symbols. */
3140 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3141 == (SEC_CODE
| SEC_ALLOC
)
3142 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3143 != (SEC_CODE
| SEC_ALLOC
))
3146 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3147 != (SEC_CODE
| SEC_ALLOC
)
3148 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3149 == (SEC_CODE
| SEC_ALLOC
))
3152 if (synthetic_relocatable
)
3154 if (a
->section
->id
< b
->section
->id
)
3157 if (a
->section
->id
> b
->section
->id
)
3161 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3164 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3167 /* For syms with the same value, prefer strong dynamic global function
3168 syms over other syms. */
3169 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3172 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3175 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3178 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3181 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3184 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3187 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3190 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3196 /* Search SYMS for a symbol of the given VALUE. */
3199 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3203 if (id
== (unsigned) -1)
3207 mid
= (lo
+ hi
) >> 1;
3208 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3210 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3220 mid
= (lo
+ hi
) >> 1;
3221 if (syms
[mid
]->section
->id
< id
)
3223 else if (syms
[mid
]->section
->id
> id
)
3225 else if (syms
[mid
]->value
< value
)
3227 else if (syms
[mid
]->value
> value
)
3237 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3239 bfd_vma vma
= *(bfd_vma
*) ptr
;
3240 return ((section
->flags
& SEC_ALLOC
) != 0
3241 && section
->vma
<= vma
3242 && vma
< section
->vma
+ section
->size
);
3245 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3246 entry syms. Also generate @plt symbols for the glink branch table.
3247 Returns count of synthetic symbols in RET or -1 on error. */
3250 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3251 long static_count
, asymbol
**static_syms
,
3252 long dyn_count
, asymbol
**dyn_syms
,
3259 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3260 asection
*opd
= NULL
;
3261 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3263 int abi
= abiversion (abfd
);
3269 opd
= bfd_get_section_by_name (abfd
, ".opd");
3270 if (opd
== NULL
&& abi
== 1)
3282 symcount
= static_count
;
3284 symcount
+= dyn_count
;
3288 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3292 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3294 /* Use both symbol tables. */
3295 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3296 memcpy (syms
+ static_count
, dyn_syms
,
3297 (dyn_count
+ 1) * sizeof (*syms
));
3299 else if (!relocatable
&& static_count
== 0)
3300 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3302 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3304 synthetic_relocatable
= relocatable
;
3305 synthetic_opd
= opd
;
3306 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3308 if (!relocatable
&& symcount
> 1)
3311 /* Trim duplicate syms, since we may have merged the normal and
3312 dynamic symbols. Actually, we only care about syms that have
3313 different values, so trim any with the same value. */
3314 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3315 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3316 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3317 syms
[j
++] = syms
[i
];
3322 /* Note that here and in compare_symbols we can't compare opd and
3323 sym->section directly. With separate debug info files, the
3324 symbols will be extracted from the debug file while abfd passed
3325 to this function is the real binary. */
3326 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3330 for (; i
< symcount
; ++i
)
3331 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3332 | SEC_THREAD_LOCAL
))
3333 != (SEC_CODE
| SEC_ALLOC
))
3334 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3338 for (; i
< symcount
; ++i
)
3339 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3343 for (; i
< symcount
; ++i
)
3344 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3348 for (; i
< symcount
; ++i
)
3349 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3350 != (SEC_CODE
| SEC_ALLOC
))
3358 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3363 if (opdsymend
== secsymend
)
3366 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3367 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3371 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3378 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3382 while (r
< opd
->relocation
+ relcount
3383 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3386 if (r
== opd
->relocation
+ relcount
)
3389 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3392 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3395 sym
= *r
->sym_ptr_ptr
;
3396 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3397 sym
->section
->id
, sym
->value
+ r
->addend
))
3400 size
+= sizeof (asymbol
);
3401 size
+= strlen (syms
[i
]->name
) + 2;
3407 s
= *ret
= bfd_malloc (size
);
3414 names
= (char *) (s
+ count
);
3416 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3420 while (r
< opd
->relocation
+ relcount
3421 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3424 if (r
== opd
->relocation
+ relcount
)
3427 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3430 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3433 sym
= *r
->sym_ptr_ptr
;
3434 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3435 sym
->section
->id
, sym
->value
+ r
->addend
))
3440 s
->flags
|= BSF_SYNTHETIC
;
3441 s
->section
= sym
->section
;
3442 s
->value
= sym
->value
+ r
->addend
;
3445 len
= strlen (syms
[i
]->name
);
3446 memcpy (names
, syms
[i
]->name
, len
+ 1);
3448 /* Have udata.p point back to the original symbol this
3449 synthetic symbol was derived from. */
3450 s
->udata
.p
= syms
[i
];
3457 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3458 bfd_byte
*contents
= NULL
;
3461 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3462 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3465 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3467 free_contents_and_exit_err
:
3469 free_contents_and_exit
:
3476 for (i
= secsymend
; i
< opdsymend
; ++i
)
3480 /* Ignore bogus symbols. */
3481 if (syms
[i
]->value
> opd
->size
- 8)
3484 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3485 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3488 size
+= sizeof (asymbol
);
3489 size
+= strlen (syms
[i
]->name
) + 2;
3493 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3495 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3497 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3499 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3501 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3502 goto free_contents_and_exit_err
;
3504 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3505 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3508 extdynend
= extdyn
+ dynamic
->size
;
3509 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3511 Elf_Internal_Dyn dyn
;
3512 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3514 if (dyn
.d_tag
== DT_NULL
)
3517 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3519 /* The first glink stub starts at DT_PPC64_GLINK plus 32.
3520 See comment in ppc64_elf_finish_dynamic_sections. */
3521 glink_vma
= dyn
.d_un
.d_val
+ 8 * 4;
3522 /* The .glink section usually does not survive the final
3523 link; search for the section (usually .text) where the
3524 glink stubs now reside. */
3525 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3536 /* Determine __glink trampoline by reading the relative branch
3537 from the first glink stub. */
3539 unsigned int off
= 0;
3541 while (bfd_get_section_contents (abfd
, glink
, buf
,
3542 glink_vma
+ off
- glink
->vma
, 4))
3544 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3546 if ((insn
& ~0x3fffffc) == 0)
3548 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3557 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3559 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3562 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3563 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3564 goto free_contents_and_exit_err
;
3566 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3567 size
+= plt_count
* sizeof (asymbol
);
3569 p
= relplt
->relocation
;
3570 for (i
= 0; i
< plt_count
; i
++, p
++)
3572 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3574 size
+= sizeof ("+0x") - 1 + 16;
3580 goto free_contents_and_exit
;
3581 s
= *ret
= bfd_malloc (size
);
3583 goto free_contents_and_exit_err
;
3585 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3587 for (i
= secsymend
; i
< opdsymend
; ++i
)
3591 if (syms
[i
]->value
> opd
->size
- 8)
3594 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3595 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3599 asection
*sec
= abfd
->sections
;
3606 long mid
= (lo
+ hi
) >> 1;
3607 if (syms
[mid
]->section
->vma
< ent
)
3609 else if (syms
[mid
]->section
->vma
> ent
)
3613 sec
= syms
[mid
]->section
;
3618 if (lo
>= hi
&& lo
> codesecsym
)
3619 sec
= syms
[lo
- 1]->section
;
3621 for (; sec
!= NULL
; sec
= sec
->next
)
3625 /* SEC_LOAD may not be set if SEC is from a separate debug
3627 if ((sec
->flags
& SEC_ALLOC
) == 0)
3629 if ((sec
->flags
& SEC_CODE
) != 0)
3632 s
->flags
|= BSF_SYNTHETIC
;
3633 s
->value
= ent
- s
->section
->vma
;
3636 len
= strlen (syms
[i
]->name
);
3637 memcpy (names
, syms
[i
]->name
, len
+ 1);
3639 /* Have udata.p point back to the original symbol this
3640 synthetic symbol was derived from. */
3641 s
->udata
.p
= syms
[i
];
3647 if (glink
!= NULL
&& relplt
!= NULL
)
3651 /* Add a symbol for the main glink trampoline. */
3652 memset (s
, 0, sizeof *s
);
3654 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3656 s
->value
= resolv_vma
- glink
->vma
;
3658 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3659 names
+= sizeof ("__glink_PLTresolve");
3664 /* FIXME: It would be very much nicer to put sym@plt on the
3665 stub rather than on the glink branch table entry. The
3666 objdump disassembler would then use a sensible symbol
3667 name on plt calls. The difficulty in doing so is
3668 a) finding the stubs, and,
3669 b) matching stubs against plt entries, and,
3670 c) there can be multiple stubs for a given plt entry.
3672 Solving (a) could be done by code scanning, but older
3673 ppc64 binaries used different stubs to current code.
3674 (b) is the tricky one since you need to known the toc
3675 pointer for at least one function that uses a pic stub to
3676 be able to calculate the plt address referenced.
3677 (c) means gdb would need to set multiple breakpoints (or
3678 find the glink branch itself) when setting breakpoints
3679 for pending shared library loads. */
3680 p
= relplt
->relocation
;
3681 for (i
= 0; i
< plt_count
; i
++, p
++)
3685 *s
= **p
->sym_ptr_ptr
;
3686 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3687 we are defining a symbol, ensure one of them is set. */
3688 if ((s
->flags
& BSF_LOCAL
) == 0)
3689 s
->flags
|= BSF_GLOBAL
;
3690 s
->flags
|= BSF_SYNTHETIC
;
3692 s
->value
= glink_vma
- glink
->vma
;
3695 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3696 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3700 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3701 names
+= sizeof ("+0x") - 1;
3702 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3703 names
+= strlen (names
);
3705 memcpy (names
, "@plt", sizeof ("@plt"));
3706 names
+= sizeof ("@plt");
3726 /* The following functions are specific to the ELF linker, while
3727 functions above are used generally. Those named ppc64_elf_* are
3728 called by the main ELF linker code. They appear in this file more
3729 or less in the order in which they are called. eg.
3730 ppc64_elf_check_relocs is called early in the link process,
3731 ppc64_elf_finish_dynamic_sections is one of the last functions
3734 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3735 functions have both a function code symbol and a function descriptor
3736 symbol. A call to foo in a relocatable object file looks like:
3743 The function definition in another object file might be:
3747 . .quad .TOC.@tocbase
3753 When the linker resolves the call during a static link, the branch
3754 unsurprisingly just goes to .foo and the .opd information is unused.
3755 If the function definition is in a shared library, things are a little
3756 different: The call goes via a plt call stub, the opd information gets
3757 copied to the plt, and the linker patches the nop.
3765 . std 2,40(1) # in practice, the call stub
3766 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3767 . addi 11,11,Lfoo@toc@l # this is the general idea
3775 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3777 The "reloc ()" notation is supposed to indicate that the linker emits
3778 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3781 What are the difficulties here? Well, firstly, the relocations
3782 examined by the linker in check_relocs are against the function code
3783 sym .foo, while the dynamic relocation in the plt is emitted against
3784 the function descriptor symbol, foo. Somewhere along the line, we need
3785 to carefully copy dynamic link information from one symbol to the other.
3786 Secondly, the generic part of the elf linker will make .foo a dynamic
3787 symbol as is normal for most other backends. We need foo dynamic
3788 instead, at least for an application final link. However, when
3789 creating a shared library containing foo, we need to have both symbols
3790 dynamic so that references to .foo are satisfied during the early
3791 stages of linking. Otherwise the linker might decide to pull in a
3792 definition from some other object, eg. a static library.
3794 Update: As of August 2004, we support a new convention. Function
3795 calls may use the function descriptor symbol, ie. "bl foo". This
3796 behaves exactly as "bl .foo". */
3798 /* Of those relocs that might be copied as dynamic relocs, this
3799 function selects those that must be copied when linking a shared
3800 library or PIE, even when the symbol is local. */
3803 must_be_dyn_reloc (struct bfd_link_info
*info
,
3804 enum elf_ppc64_reloc_type r_type
)
3809 /* Only relative relocs can be resolved when the object load
3810 address isn't fixed. DTPREL64 is excluded because the
3811 dynamic linker needs to differentiate global dynamic from
3812 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3820 case R_PPC64_TPREL16
:
3821 case R_PPC64_TPREL16_LO
:
3822 case R_PPC64_TPREL16_HI
:
3823 case R_PPC64_TPREL16_HA
:
3824 case R_PPC64_TPREL16_DS
:
3825 case R_PPC64_TPREL16_LO_DS
:
3826 case R_PPC64_TPREL16_HIGH
:
3827 case R_PPC64_TPREL16_HIGHA
:
3828 case R_PPC64_TPREL16_HIGHER
:
3829 case R_PPC64_TPREL16_HIGHERA
:
3830 case R_PPC64_TPREL16_HIGHEST
:
3831 case R_PPC64_TPREL16_HIGHESTA
:
3832 case R_PPC64_TPREL64
:
3833 /* These relocations are relative but in a shared library the
3834 linker doesn't know the thread pointer base. */
3835 return bfd_link_dll (info
);
3839 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3840 copying dynamic variables from a shared lib into an app's dynbss
3841 section, and instead use a dynamic relocation to point into the
3842 shared lib. With code that gcc generates, it's vital that this be
3843 enabled; In the PowerPC64 ABI, the address of a function is actually
3844 the address of a function descriptor, which resides in the .opd
3845 section. gcc uses the descriptor directly rather than going via the
3846 GOT as some other ABI's do, which means that initialized function
3847 pointers must reference the descriptor. Thus, a function pointer
3848 initialized to the address of a function in a shared library will
3849 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3850 redefines the function descriptor symbol to point to the copy. This
3851 presents a problem as a plt entry for that function is also
3852 initialized from the function descriptor symbol and the copy reloc
3853 may not be initialized first. */
3854 #define ELIMINATE_COPY_RELOCS 1
3856 /* Section name for stubs is the associated section name plus this
3858 #define STUB_SUFFIX ".stub"
3861 ppc_stub_long_branch:
3862 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3863 destination, but a 24 bit branch in a stub section will reach.
3866 ppc_stub_plt_branch:
3867 Similar to the above, but a 24 bit branch in the stub section won't
3868 reach its destination.
3869 . addis %r11,%r2,xxx@toc@ha
3870 . ld %r12,xxx@toc@l(%r11)
3875 Used to call a function in a shared library. If it so happens that
3876 the plt entry referenced crosses a 64k boundary, then an extra
3877 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3879 . addis %r11,%r2,xxx@toc@ha
3880 . ld %r12,xxx+0@toc@l(%r11)
3882 . ld %r2,xxx+8@toc@l(%r11)
3883 . ld %r11,xxx+16@toc@l(%r11)
3886 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3887 code to adjust the value and save r2 to support multiple toc sections.
3888 A ppc_stub_long_branch with an r2 offset looks like:
3890 . addis %r2,%r2,off@ha
3891 . addi %r2,%r2,off@l
3894 A ppc_stub_plt_branch with an r2 offset looks like:
3896 . addis %r11,%r2,xxx@toc@ha
3897 . ld %r12,xxx@toc@l(%r11)
3898 . addis %r2,%r2,off@ha
3899 . addi %r2,%r2,off@l
3903 In cases where the "addis" instruction would add zero, the "addis" is
3904 omitted and following instructions modified slightly in some cases.
3907 enum ppc_stub_type
{
3909 ppc_stub_long_branch
,
3910 ppc_stub_long_branch_r2off
,
3911 ppc_stub_plt_branch
,
3912 ppc_stub_plt_branch_r2off
,
3914 ppc_stub_plt_call_r2save
,
3915 ppc_stub_global_entry
,
3919 /* Information on stub grouping. */
3922 /* The stub section. */
3924 /* This is the section to which stubs in the group will be attached. */
3927 struct map_stub
*next
;
3928 /* Whether to emit a copy of register save/restore functions in this
3931 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3932 or -1u if no such stub with bctrl exists. */
3933 unsigned int tls_get_addr_opt_bctrl
;
3936 struct ppc_stub_hash_entry
{
3938 /* Base hash table entry structure. */
3939 struct bfd_hash_entry root
;
3941 enum ppc_stub_type stub_type
;
3943 /* Group information. */
3944 struct map_stub
*group
;
3946 /* Offset within stub_sec of the beginning of this stub. */
3947 bfd_vma stub_offset
;
3949 /* Given the symbol's value and its section we can determine its final
3950 value when building the stubs (so the stub knows where to jump. */
3951 bfd_vma target_value
;
3952 asection
*target_section
;
3954 /* The symbol table entry, if any, that this was derived from. */
3955 struct ppc_link_hash_entry
*h
;
3956 struct plt_entry
*plt_ent
;
3958 /* Symbol st_other. */
3959 unsigned char other
;
3962 struct ppc_branch_hash_entry
{
3964 /* Base hash table entry structure. */
3965 struct bfd_hash_entry root
;
3967 /* Offset within branch lookup table. */
3968 unsigned int offset
;
3970 /* Generation marker. */
3974 /* Used to track dynamic relocations for local symbols. */
3975 struct ppc_dyn_relocs
3977 struct ppc_dyn_relocs
*next
;
3979 /* The input section of the reloc. */
3982 /* Total number of relocs copied for the input section. */
3983 unsigned int count
: 31;
3985 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3986 unsigned int ifunc
: 1;
3989 struct ppc_link_hash_entry
3991 struct elf_link_hash_entry elf
;
3994 /* A pointer to the most recently used stub hash entry against this
3996 struct ppc_stub_hash_entry
*stub_cache
;
3998 /* A pointer to the next symbol starting with a '.' */
3999 struct ppc_link_hash_entry
*next_dot_sym
;
4002 /* Track dynamic relocs copied for this symbol. */
4003 struct elf_dyn_relocs
*dyn_relocs
;
4005 /* Link between function code and descriptor symbols. */
4006 struct ppc_link_hash_entry
*oh
;
4008 /* Flag function code and descriptor symbols. */
4009 unsigned int is_func
:1;
4010 unsigned int is_func_descriptor
:1;
4011 unsigned int fake
:1;
4013 /* Whether global opd/toc sym has been adjusted or not.
4014 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4015 should be set for all globals defined in any opd/toc section. */
4016 unsigned int adjust_done
:1;
4018 /* Set if this is an out-of-line register save/restore function,
4019 with non-standard calling convention. */
4020 unsigned int save_res
:1;
4022 /* Set if a duplicate symbol with non-zero localentry is detected,
4023 even when the duplicate symbol does not provide a definition. */
4024 unsigned int non_zero_localentry
:1;
4026 /* Contexts in which symbol is used in the GOT (or TOC).
4027 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4028 corresponding relocs are encountered during check_relocs.
4029 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4030 indicate the corresponding GOT entry type is not needed.
4031 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4032 a TPREL one. We use a separate flag rather than setting TPREL
4033 just for convenience in distinguishing the two cases. */
4034 #define TLS_GD 1 /* GD reloc. */
4035 #define TLS_LD 2 /* LD reloc. */
4036 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4037 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4038 #define TLS_TLS 16 /* Any TLS reloc. */
4039 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4040 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4041 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4042 unsigned char tls_mask
;
4045 /* ppc64 ELF linker hash table. */
4047 struct ppc_link_hash_table
4049 struct elf_link_hash_table elf
;
4051 /* The stub hash table. */
4052 struct bfd_hash_table stub_hash_table
;
4054 /* Another hash table for plt_branch stubs. */
4055 struct bfd_hash_table branch_hash_table
;
4057 /* Hash table for function prologue tocsave. */
4058 htab_t tocsave_htab
;
4060 /* Various options and other info passed from the linker. */
4061 struct ppc64_elf_params
*params
;
4063 /* The size of sec_info below. */
4064 unsigned int sec_info_arr_size
;
4066 /* Per-section array of extra section info. Done this way rather
4067 than as part of ppc64_elf_section_data so we have the info for
4068 non-ppc64 sections. */
4071 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4076 /* The section group that this section belongs to. */
4077 struct map_stub
*group
;
4078 /* A temp section list pointer. */
4083 /* Linked list of groups. */
4084 struct map_stub
*group
;
4086 /* Temp used when calculating TOC pointers. */
4089 asection
*toc_first_sec
;
4091 /* Used when adding symbols. */
4092 struct ppc_link_hash_entry
*dot_syms
;
4094 /* Shortcuts to get to dynamic linker sections. */
4096 asection
*global_entry
;
4100 asection
*glink_eh_frame
;
4102 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4103 struct ppc_link_hash_entry
*tls_get_addr
;
4104 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4106 /* The size of reliplt used by got entry relocs. */
4107 bfd_size_type got_reli_size
;
4110 unsigned long stub_count
[ppc_stub_global_entry
];
4112 /* Number of stubs against global syms. */
4113 unsigned long stub_globals
;
4115 /* Set if we're linking code with function descriptors. */
4116 unsigned int opd_abi
:1;
4118 /* Support for multiple toc sections. */
4119 unsigned int do_multi_toc
:1;
4120 unsigned int multi_toc_needed
:1;
4121 unsigned int second_toc_pass
:1;
4122 unsigned int do_toc_opt
:1;
4124 /* Set if tls optimization is enabled. */
4125 unsigned int do_tls_opt
:1;
4128 unsigned int stub_error
:1;
4130 /* Whether func_desc_adjust needs to be run over symbols. */
4131 unsigned int need_func_desc_adj
:1;
4133 /* Whether there exist local gnu indirect function resolvers,
4134 referenced by dynamic relocations. */
4135 unsigned int local_ifunc_resolver
:1;
4136 unsigned int maybe_local_ifunc_resolver
:1;
4138 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4139 unsigned int has_plt_localentry0
:1;
4141 /* Incremented every time we size stubs. */
4142 unsigned int stub_iteration
;
4144 /* Small local sym cache. */
4145 struct sym_cache sym_cache
;
4148 /* Rename some of the generic section flags to better document how they
4151 /* Nonzero if this section has TLS related relocations. */
4152 #define has_tls_reloc sec_flg0
4154 /* Nonzero if this section has a call to __tls_get_addr. */
4155 #define has_tls_get_addr_call sec_flg1
4157 /* Nonzero if this section has any toc or got relocs. */
4158 #define has_toc_reloc sec_flg2
4160 /* Nonzero if this section has a call to another section that uses
4162 #define makes_toc_func_call sec_flg3
4164 /* Recursion protection when determining above flag. */
4165 #define call_check_in_progress sec_flg4
4166 #define call_check_done sec_flg5
4168 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4170 #define ppc_hash_table(p) \
4171 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4172 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4174 #define ppc_stub_hash_lookup(table, string, create, copy) \
4175 ((struct ppc_stub_hash_entry *) \
4176 bfd_hash_lookup ((table), (string), (create), (copy)))
4178 #define ppc_branch_hash_lookup(table, string, create, copy) \
4179 ((struct ppc_branch_hash_entry *) \
4180 bfd_hash_lookup ((table), (string), (create), (copy)))
4182 /* Create an entry in the stub hash table. */
4184 static struct bfd_hash_entry
*
4185 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4186 struct bfd_hash_table
*table
,
4189 /* Allocate the structure if it has not already been allocated by a
4193 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4198 /* Call the allocation method of the superclass. */
4199 entry
= bfd_hash_newfunc (entry
, table
, string
);
4202 struct ppc_stub_hash_entry
*eh
;
4204 /* Initialize the local fields. */
4205 eh
= (struct ppc_stub_hash_entry
*) entry
;
4206 eh
->stub_type
= ppc_stub_none
;
4208 eh
->stub_offset
= 0;
4209 eh
->target_value
= 0;
4210 eh
->target_section
= NULL
;
4219 /* Create an entry in the branch hash table. */
4221 static struct bfd_hash_entry
*
4222 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4223 struct bfd_hash_table
*table
,
4226 /* Allocate the structure if it has not already been allocated by a
4230 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4235 /* Call the allocation method of the superclass. */
4236 entry
= bfd_hash_newfunc (entry
, table
, string
);
4239 struct ppc_branch_hash_entry
*eh
;
4241 /* Initialize the local fields. */
4242 eh
= (struct ppc_branch_hash_entry
*) entry
;
4250 /* Create an entry in a ppc64 ELF linker hash table. */
4252 static struct bfd_hash_entry
*
4253 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4254 struct bfd_hash_table
*table
,
4257 /* Allocate the structure if it has not already been allocated by a
4261 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4266 /* Call the allocation method of the superclass. */
4267 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4270 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4272 memset (&eh
->u
.stub_cache
, 0,
4273 (sizeof (struct ppc_link_hash_entry
)
4274 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4276 /* When making function calls, old ABI code references function entry
4277 points (dot symbols), while new ABI code references the function
4278 descriptor symbol. We need to make any combination of reference and
4279 definition work together, without breaking archive linking.
4281 For a defined function "foo" and an undefined call to "bar":
4282 An old object defines "foo" and ".foo", references ".bar" (possibly
4284 A new object defines "foo" and references "bar".
4286 A new object thus has no problem with its undefined symbols being
4287 satisfied by definitions in an old object. On the other hand, the
4288 old object won't have ".bar" satisfied by a new object.
4290 Keep a list of newly added dot-symbols. */
4292 if (string
[0] == '.')
4294 struct ppc_link_hash_table
*htab
;
4296 htab
= (struct ppc_link_hash_table
*) table
;
4297 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4298 htab
->dot_syms
= eh
;
4305 struct tocsave_entry
{
4311 tocsave_htab_hash (const void *p
)
4313 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4314 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4318 tocsave_htab_eq (const void *p1
, const void *p2
)
4320 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4321 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4322 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4325 /* Destroy a ppc64 ELF linker hash table. */
4328 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4330 struct ppc_link_hash_table
*htab
;
4332 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4333 if (htab
->tocsave_htab
)
4334 htab_delete (htab
->tocsave_htab
);
4335 bfd_hash_table_free (&htab
->branch_hash_table
);
4336 bfd_hash_table_free (&htab
->stub_hash_table
);
4337 _bfd_elf_link_hash_table_free (obfd
);
4340 /* Create a ppc64 ELF linker hash table. */
4342 static struct bfd_link_hash_table
*
4343 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4345 struct ppc_link_hash_table
*htab
;
4346 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4348 htab
= bfd_zmalloc (amt
);
4352 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4353 sizeof (struct ppc_link_hash_entry
),
4360 /* Init the stub hash table too. */
4361 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4362 sizeof (struct ppc_stub_hash_entry
)))
4364 _bfd_elf_link_hash_table_free (abfd
);
4368 /* And the branch hash table. */
4369 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4370 sizeof (struct ppc_branch_hash_entry
)))
4372 bfd_hash_table_free (&htab
->stub_hash_table
);
4373 _bfd_elf_link_hash_table_free (abfd
);
4377 htab
->tocsave_htab
= htab_try_create (1024,
4381 if (htab
->tocsave_htab
== NULL
)
4383 ppc64_elf_link_hash_table_free (abfd
);
4386 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4388 /* Initializing two fields of the union is just cosmetic. We really
4389 only care about glist, but when compiled on a 32-bit host the
4390 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4391 debugger inspection of these fields look nicer. */
4392 htab
->elf
.init_got_refcount
.refcount
= 0;
4393 htab
->elf
.init_got_refcount
.glist
= NULL
;
4394 htab
->elf
.init_plt_refcount
.refcount
= 0;
4395 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4396 htab
->elf
.init_got_offset
.offset
= 0;
4397 htab
->elf
.init_got_offset
.glist
= NULL
;
4398 htab
->elf
.init_plt_offset
.offset
= 0;
4399 htab
->elf
.init_plt_offset
.glist
= NULL
;
4401 return &htab
->elf
.root
;
4404 /* Create sections for linker generated code. */
4407 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4409 struct ppc_link_hash_table
*htab
;
4412 htab
= ppc_hash_table (info
);
4414 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4415 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4416 if (htab
->params
->save_restore_funcs
)
4418 /* Create .sfpr for code to save and restore fp regs. */
4419 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4421 if (htab
->sfpr
== NULL
4422 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4426 if (bfd_link_relocatable (info
))
4429 /* Create .glink for lazy dynamic linking support. */
4430 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4432 if (htab
->glink
== NULL
4433 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4436 /* The part of .glink used by global entry stubs, separate so that
4437 it can be aligned appropriately without affecting htab->glink. */
4438 htab
->global_entry
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4440 if (htab
->global_entry
== NULL
4441 || ! bfd_set_section_alignment (dynobj
, htab
->global_entry
, 2))
4444 if (!info
->no_ld_generated_unwind_info
)
4446 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4447 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4448 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4451 if (htab
->glink_eh_frame
== NULL
4452 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4456 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4457 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4458 if (htab
->elf
.iplt
== NULL
4459 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4462 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4463 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4465 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4466 if (htab
->elf
.irelplt
== NULL
4467 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4470 /* Create branch lookup table for plt_branch stubs. */
4471 flags
= (SEC_ALLOC
| SEC_LOAD
4472 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4473 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4475 if (htab
->brlt
== NULL
4476 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4479 if (!bfd_link_pic (info
))
4482 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4483 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4484 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4487 if (htab
->relbrlt
== NULL
4488 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4494 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4497 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4498 struct ppc64_elf_params
*params
)
4500 struct ppc_link_hash_table
*htab
;
4502 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4504 /* Always hook our dynamic sections into the first bfd, which is the
4505 linker created stub bfd. This ensures that the GOT header is at
4506 the start of the output TOC section. */
4507 htab
= ppc_hash_table (info
);
4508 htab
->elf
.dynobj
= params
->stub_bfd
;
4509 htab
->params
= params
;
4511 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4514 /* Build a name for an entry in the stub hash table. */
4517 ppc_stub_name (const asection
*input_section
,
4518 const asection
*sym_sec
,
4519 const struct ppc_link_hash_entry
*h
,
4520 const Elf_Internal_Rela
*rel
)
4525 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4526 offsets from a sym as a branch target? In fact, we could
4527 probably assume the addend is always zero. */
4528 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4532 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4533 stub_name
= bfd_malloc (len
);
4534 if (stub_name
== NULL
)
4537 len
= sprintf (stub_name
, "%08x.%s+%x",
4538 input_section
->id
& 0xffffffff,
4539 h
->elf
.root
.root
.string
,
4540 (int) rel
->r_addend
& 0xffffffff);
4544 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4545 stub_name
= bfd_malloc (len
);
4546 if (stub_name
== NULL
)
4549 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4550 input_section
->id
& 0xffffffff,
4551 sym_sec
->id
& 0xffffffff,
4552 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4553 (int) rel
->r_addend
& 0xffffffff);
4555 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4556 stub_name
[len
- 2] = 0;
4560 /* Look up an entry in the stub hash. Stub entries are cached because
4561 creating the stub name takes a bit of time. */
4563 static struct ppc_stub_hash_entry
*
4564 ppc_get_stub_entry (const asection
*input_section
,
4565 const asection
*sym_sec
,
4566 struct ppc_link_hash_entry
*h
,
4567 const Elf_Internal_Rela
*rel
,
4568 struct ppc_link_hash_table
*htab
)
4570 struct ppc_stub_hash_entry
*stub_entry
;
4571 struct map_stub
*group
;
4573 /* If this input section is part of a group of sections sharing one
4574 stub section, then use the id of the first section in the group.
4575 Stub names need to include a section id, as there may well be
4576 more than one stub used to reach say, printf, and we need to
4577 distinguish between them. */
4578 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4582 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4583 && h
->u
.stub_cache
->h
== h
4584 && h
->u
.stub_cache
->group
== group
)
4586 stub_entry
= h
->u
.stub_cache
;
4592 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4593 if (stub_name
== NULL
)
4596 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4597 stub_name
, FALSE
, FALSE
);
4599 h
->u
.stub_cache
= stub_entry
;
4607 /* Add a new stub entry to the stub hash. Not all fields of the new
4608 stub entry are initialised. */
4610 static struct ppc_stub_hash_entry
*
4611 ppc_add_stub (const char *stub_name
,
4613 struct bfd_link_info
*info
)
4615 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4616 struct map_stub
*group
;
4619 struct ppc_stub_hash_entry
*stub_entry
;
4621 group
= htab
->sec_info
[section
->id
].u
.group
;
4622 link_sec
= group
->link_sec
;
4623 stub_sec
= group
->stub_sec
;
4624 if (stub_sec
== NULL
)
4630 namelen
= strlen (link_sec
->name
);
4631 len
= namelen
+ sizeof (STUB_SUFFIX
);
4632 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4636 memcpy (s_name
, link_sec
->name
, namelen
);
4637 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4638 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4639 if (stub_sec
== NULL
)
4641 group
->stub_sec
= stub_sec
;
4644 /* Enter this entry into the linker stub hash table. */
4645 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4647 if (stub_entry
== NULL
)
4649 /* xgettext:c-format */
4650 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4651 section
->owner
, stub_name
);
4655 stub_entry
->group
= group
;
4656 stub_entry
->stub_offset
= 0;
4660 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4661 not already done. */
4664 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4666 asection
*got
, *relgot
;
4668 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4670 if (!is_ppc64_elf (abfd
))
4676 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4679 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4680 | SEC_LINKER_CREATED
);
4682 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4684 || !bfd_set_section_alignment (abfd
, got
, 3))
4687 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4688 flags
| SEC_READONLY
);
4690 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4693 ppc64_elf_tdata (abfd
)->got
= got
;
4694 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4698 /* Follow indirect and warning symbol links. */
4700 static inline struct bfd_link_hash_entry
*
4701 follow_link (struct bfd_link_hash_entry
*h
)
4703 while (h
->type
== bfd_link_hash_indirect
4704 || h
->type
== bfd_link_hash_warning
)
4709 static inline struct elf_link_hash_entry
*
4710 elf_follow_link (struct elf_link_hash_entry
*h
)
4712 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4715 static inline struct ppc_link_hash_entry
*
4716 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4718 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4721 /* Merge PLT info on FROM with that on TO. */
4724 move_plt_plist (struct ppc_link_hash_entry
*from
,
4725 struct ppc_link_hash_entry
*to
)
4727 if (from
->elf
.plt
.plist
!= NULL
)
4729 if (to
->elf
.plt
.plist
!= NULL
)
4731 struct plt_entry
**entp
;
4732 struct plt_entry
*ent
;
4734 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4736 struct plt_entry
*dent
;
4738 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4739 if (dent
->addend
== ent
->addend
)
4741 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4748 *entp
= to
->elf
.plt
.plist
;
4751 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4752 from
->elf
.plt
.plist
= NULL
;
4756 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4759 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4760 struct elf_link_hash_entry
*dir
,
4761 struct elf_link_hash_entry
*ind
)
4763 struct ppc_link_hash_entry
*edir
, *eind
;
4765 edir
= (struct ppc_link_hash_entry
*) dir
;
4766 eind
= (struct ppc_link_hash_entry
*) ind
;
4768 edir
->is_func
|= eind
->is_func
;
4769 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4770 edir
->tls_mask
|= eind
->tls_mask
;
4771 if (eind
->oh
!= NULL
)
4772 edir
->oh
= ppc_follow_link (eind
->oh
);
4774 if (edir
->elf
.versioned
!= versioned_hidden
)
4775 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4776 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4777 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4778 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4779 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4780 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4782 /* If we were called to copy over info for a weak sym, don't copy
4783 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4784 in order to simplify readonly_dynrelocs and save a field in the
4785 symbol hash entry, but that means dyn_relocs can't be used in any
4786 tests about a specific symbol, or affect other symbol flags which
4788 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4791 /* Copy over any dynamic relocs we may have on the indirect sym. */
4792 if (eind
->dyn_relocs
!= NULL
)
4794 if (edir
->dyn_relocs
!= NULL
)
4796 struct elf_dyn_relocs
**pp
;
4797 struct elf_dyn_relocs
*p
;
4799 /* Add reloc counts against the indirect sym to the direct sym
4800 list. Merge any entries against the same section. */
4801 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4803 struct elf_dyn_relocs
*q
;
4805 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4806 if (q
->sec
== p
->sec
)
4808 q
->pc_count
+= p
->pc_count
;
4809 q
->count
+= p
->count
;
4816 *pp
= edir
->dyn_relocs
;
4819 edir
->dyn_relocs
= eind
->dyn_relocs
;
4820 eind
->dyn_relocs
= NULL
;
4823 /* Copy over got entries that we may have already seen to the
4824 symbol which just became indirect. */
4825 if (eind
->elf
.got
.glist
!= NULL
)
4827 if (edir
->elf
.got
.glist
!= NULL
)
4829 struct got_entry
**entp
;
4830 struct got_entry
*ent
;
4832 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4834 struct got_entry
*dent
;
4836 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4837 if (dent
->addend
== ent
->addend
4838 && dent
->owner
== ent
->owner
4839 && dent
->tls_type
== ent
->tls_type
)
4841 dent
->got
.refcount
+= ent
->got
.refcount
;
4848 *entp
= edir
->elf
.got
.glist
;
4851 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4852 eind
->elf
.got
.glist
= NULL
;
4855 /* And plt entries. */
4856 move_plt_plist (eind
, edir
);
4858 if (eind
->elf
.dynindx
!= -1)
4860 if (edir
->elf
.dynindx
!= -1)
4861 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4862 edir
->elf
.dynstr_index
);
4863 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4864 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4865 eind
->elf
.dynindx
= -1;
4866 eind
->elf
.dynstr_index
= 0;
4870 /* Find the function descriptor hash entry from the given function code
4871 hash entry FH. Link the entries via their OH fields. */
4873 static struct ppc_link_hash_entry
*
4874 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4876 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4880 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4882 fdh
= (struct ppc_link_hash_entry
*)
4883 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4887 fdh
->is_func_descriptor
= 1;
4893 fdh
= ppc_follow_link (fdh
);
4894 fdh
->is_func_descriptor
= 1;
4899 /* Make a fake function descriptor sym for the undefined code sym FH. */
4901 static struct ppc_link_hash_entry
*
4902 make_fdh (struct bfd_link_info
*info
,
4903 struct ppc_link_hash_entry
*fh
)
4905 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4906 struct bfd_link_hash_entry
*bh
= NULL
;
4907 struct ppc_link_hash_entry
*fdh
;
4908 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4912 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4913 fh
->elf
.root
.root
.string
+ 1,
4914 flags
, bfd_und_section_ptr
, 0,
4915 NULL
, FALSE
, FALSE
, &bh
))
4918 fdh
= (struct ppc_link_hash_entry
*) bh
;
4919 fdh
->elf
.non_elf
= 0;
4921 fdh
->is_func_descriptor
= 1;
4928 /* Fix function descriptor symbols defined in .opd sections to be
4932 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4933 struct bfd_link_info
*info
,
4934 Elf_Internal_Sym
*isym
,
4936 flagword
*flags ATTRIBUTE_UNUSED
,
4940 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4941 && (ibfd
->flags
& DYNAMIC
) == 0
4942 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4943 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4946 && strcmp ((*sec
)->name
, ".opd") == 0)
4950 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4951 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4952 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4954 /* If the symbol is a function defined in .opd, and the function
4955 code is in a discarded group, let it appear to be undefined. */
4956 if (!bfd_link_relocatable (info
)
4957 && (*sec
)->reloc_count
!= 0
4958 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4959 FALSE
) != (bfd_vma
) -1
4960 && discarded_section (code_sec
))
4962 *sec
= bfd_und_section_ptr
;
4963 isym
->st_shndx
= SHN_UNDEF
;
4966 else if (*sec
!= NULL
4967 && strcmp ((*sec
)->name
, ".toc") == 0
4968 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4970 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4972 htab
->params
->object_in_toc
= 1;
4975 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4977 if (abiversion (ibfd
) == 0)
4978 set_abiversion (ibfd
, 2);
4979 else if (abiversion (ibfd
) == 1)
4981 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4982 " for ABI version 1\n"), name
);
4983 bfd_set_error (bfd_error_bad_value
);
4991 /* Merge non-visibility st_other attributes: local entry point. */
4994 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4995 const Elf_Internal_Sym
*isym
,
4996 bfd_boolean definition
,
4997 bfd_boolean dynamic
)
4999 if (definition
&& (!dynamic
|| !h
->def_regular
))
5000 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5001 | ELF_ST_VISIBILITY (h
->other
));
5004 /* Hook called on merging a symbol. We use this to clear "fake" since
5005 we now have a real symbol. */
5008 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5009 const Elf_Internal_Sym
*isym
,
5010 asection
**psec ATTRIBUTE_UNUSED
,
5011 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5012 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5013 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5014 const asection
*oldsec ATTRIBUTE_UNUSED
)
5016 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5017 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5018 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5022 /* This function makes an old ABI object reference to ".bar" cause the
5023 inclusion of a new ABI object archive that defines "bar".
5024 NAME is a symbol defined in an archive. Return a symbol in the hash
5025 table that might be satisfied by the archive symbols. */
5027 static struct elf_link_hash_entry
*
5028 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5029 struct bfd_link_info
*info
,
5032 struct elf_link_hash_entry
*h
;
5036 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5038 /* Don't return this sym if it is a fake function descriptor
5039 created by add_symbol_adjust. */
5040 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5046 len
= strlen (name
);
5047 dot_name
= bfd_alloc (abfd
, len
+ 2);
5048 if (dot_name
== NULL
)
5049 return (struct elf_link_hash_entry
*) -1;
5051 memcpy (dot_name
+ 1, name
, len
+ 1);
5052 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5053 bfd_release (abfd
, dot_name
);
5057 /* This function satisfies all old ABI object references to ".bar" if a
5058 new ABI object defines "bar". Well, at least, undefined dot symbols
5059 are made weak. This stops later archive searches from including an
5060 object if we already have a function descriptor definition. It also
5061 prevents the linker complaining about undefined symbols.
5062 We also check and correct mismatched symbol visibility here. The
5063 most restrictive visibility of the function descriptor and the
5064 function entry symbol is used. */
5067 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5069 struct ppc_link_hash_table
*htab
;
5070 struct ppc_link_hash_entry
*fdh
;
5072 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5073 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5075 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5078 if (eh
->elf
.root
.root
.string
[0] != '.')
5081 htab
= ppc_hash_table (info
);
5085 fdh
= lookup_fdh (eh
, htab
);
5087 && !bfd_link_relocatable (info
)
5088 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5089 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5090 && eh
->elf
.ref_regular
)
5092 /* Make an undefined function descriptor sym, in order to
5093 pull in an --as-needed shared lib. Archives are handled
5095 fdh
= make_fdh (info
, eh
);
5102 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5103 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5105 /* Make both descriptor and entry symbol have the most
5106 constraining visibility of either symbol. */
5107 if (entry_vis
< descr_vis
)
5108 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5109 else if (entry_vis
> descr_vis
)
5110 eh
->elf
.other
+= descr_vis
- entry_vis
;
5112 /* Propagate reference flags from entry symbol to function
5113 descriptor symbol. */
5114 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5115 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5116 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5117 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5119 if (!fdh
->elf
.forced_local
5120 && fdh
->elf
.dynindx
== -1
5121 && fdh
->elf
.versioned
!= versioned_hidden
5122 && (bfd_link_dll (info
)
5123 || fdh
->elf
.def_dynamic
5124 || fdh
->elf
.ref_dynamic
)
5125 && (eh
->elf
.ref_regular
5126 || eh
->elf
.def_regular
))
5128 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5136 /* Set up opd section info and abiversion for IBFD, and process list
5137 of dot-symbols we made in link_hash_newfunc. */
5140 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5142 struct ppc_link_hash_table
*htab
;
5143 struct ppc_link_hash_entry
**p
, *eh
;
5144 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5146 if (opd
!= NULL
&& opd
->size
!= 0)
5148 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5149 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5151 if (abiversion (ibfd
) == 0)
5152 set_abiversion (ibfd
, 1);
5153 else if (abiversion (ibfd
) >= 2)
5155 /* xgettext:c-format */
5156 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5158 ibfd
, abiversion (ibfd
));
5159 bfd_set_error (bfd_error_bad_value
);
5164 if (is_ppc64_elf (info
->output_bfd
))
5166 /* For input files without an explicit abiversion in e_flags
5167 we should have flagged any with symbol st_other bits set
5168 as ELFv1 and above flagged those with .opd as ELFv2.
5169 Set the output abiversion if not yet set, and for any input
5170 still ambiguous, take its abiversion from the output.
5171 Differences in ABI are reported later. */
5172 if (abiversion (info
->output_bfd
) == 0)
5173 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5174 else if (abiversion (ibfd
) == 0)
5175 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5178 htab
= ppc_hash_table (info
);
5182 if (opd
!= NULL
&& opd
->size
!= 0
5183 && (ibfd
->flags
& DYNAMIC
) == 0
5184 && (opd
->flags
& SEC_RELOC
) != 0
5185 && opd
->reloc_count
!= 0
5186 && !bfd_is_abs_section (opd
->output_section
)
5187 && info
->gc_sections
)
5189 /* Garbage collection needs some extra help with .opd sections.
5190 We don't want to necessarily keep everything referenced by
5191 relocs in .opd, as that would keep all functions. Instead,
5192 if we reference an .opd symbol (a function descriptor), we
5193 want to keep the function code symbol's section. This is
5194 easy for global symbols, but for local syms we need to keep
5195 information about the associated function section. */
5197 asection
**opd_sym_map
;
5198 Elf_Internal_Shdr
*symtab_hdr
;
5199 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5201 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5202 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5203 if (opd_sym_map
== NULL
)
5205 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5206 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5210 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5211 rel_end
= relocs
+ opd
->reloc_count
- 1;
5212 for (rel
= relocs
; rel
< rel_end
; rel
++)
5214 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5215 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5217 if (r_type
== R_PPC64_ADDR64
5218 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5219 && r_symndx
< symtab_hdr
->sh_info
)
5221 Elf_Internal_Sym
*isym
;
5224 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5227 if (elf_section_data (opd
)->relocs
!= relocs
)
5232 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5233 if (s
!= NULL
&& s
!= opd
)
5234 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5237 if (elf_section_data (opd
)->relocs
!= relocs
)
5241 p
= &htab
->dot_syms
;
5242 while ((eh
= *p
) != NULL
)
5245 if (&eh
->elf
== htab
->elf
.hgot
)
5247 else if (htab
->elf
.hgot
== NULL
5248 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5249 htab
->elf
.hgot
= &eh
->elf
;
5250 else if (abiversion (ibfd
) <= 1)
5252 htab
->need_func_desc_adj
= 1;
5253 if (!add_symbol_adjust (eh
, info
))
5256 p
= &eh
->u
.next_dot_sym
;
5261 /* Undo hash table changes when an --as-needed input file is determined
5262 not to be needed. */
5265 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5266 struct bfd_link_info
*info
,
5267 enum notice_asneeded_action act
)
5269 if (act
== notice_not_needed
)
5271 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5276 htab
->dot_syms
= NULL
;
5278 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5281 /* If --just-symbols against a final linked binary, then assume we need
5282 toc adjusting stubs when calling functions defined there. */
5285 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5287 if ((sec
->flags
& SEC_CODE
) != 0
5288 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5289 && is_ppc64_elf (sec
->owner
))
5291 if (abiversion (sec
->owner
) >= 2
5292 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5293 sec
->has_toc_reloc
= 1;
5295 _bfd_elf_link_just_syms (sec
, info
);
5298 static struct plt_entry
**
5299 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5300 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5302 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5303 struct plt_entry
**local_plt
;
5304 unsigned char *local_got_tls_masks
;
5306 if (local_got_ents
== NULL
)
5308 bfd_size_type size
= symtab_hdr
->sh_info
;
5310 size
*= (sizeof (*local_got_ents
)
5311 + sizeof (*local_plt
)
5312 + sizeof (*local_got_tls_masks
));
5313 local_got_ents
= bfd_zalloc (abfd
, size
);
5314 if (local_got_ents
== NULL
)
5316 elf_local_got_ents (abfd
) = local_got_ents
;
5319 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5321 struct got_entry
*ent
;
5323 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5324 if (ent
->addend
== r_addend
5325 && ent
->owner
== abfd
5326 && ent
->tls_type
== tls_type
)
5330 bfd_size_type amt
= sizeof (*ent
);
5331 ent
= bfd_alloc (abfd
, amt
);
5334 ent
->next
= local_got_ents
[r_symndx
];
5335 ent
->addend
= r_addend
;
5337 ent
->tls_type
= tls_type
;
5338 ent
->is_indirect
= FALSE
;
5339 ent
->got
.refcount
= 0;
5340 local_got_ents
[r_symndx
] = ent
;
5342 ent
->got
.refcount
+= 1;
5345 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5346 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5347 local_got_tls_masks
[r_symndx
] |= tls_type
;
5349 return local_plt
+ r_symndx
;
5353 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5355 struct plt_entry
*ent
;
5357 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5358 if (ent
->addend
== addend
)
5362 bfd_size_type amt
= sizeof (*ent
);
5363 ent
= bfd_alloc (abfd
, amt
);
5367 ent
->addend
= addend
;
5368 ent
->plt
.refcount
= 0;
5371 ent
->plt
.refcount
+= 1;
5376 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5378 return (r_type
== R_PPC64_REL24
5379 || r_type
== R_PPC64_REL14
5380 || r_type
== R_PPC64_REL14_BRTAKEN
5381 || r_type
== R_PPC64_REL14_BRNTAKEN
5382 || r_type
== R_PPC64_ADDR24
5383 || r_type
== R_PPC64_ADDR14
5384 || r_type
== R_PPC64_ADDR14_BRTAKEN
5385 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5388 /* Look through the relocs for a section during the first phase, and
5389 calculate needed space in the global offset table, procedure
5390 linkage table, and dynamic reloc sections. */
5393 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5394 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5396 struct ppc_link_hash_table
*htab
;
5397 Elf_Internal_Shdr
*symtab_hdr
;
5398 struct elf_link_hash_entry
**sym_hashes
;
5399 const Elf_Internal_Rela
*rel
;
5400 const Elf_Internal_Rela
*rel_end
;
5402 struct elf_link_hash_entry
*tga
, *dottga
;
5405 if (bfd_link_relocatable (info
))
5408 /* Don't do anything special with non-loaded, non-alloced sections.
5409 In particular, any relocs in such sections should not affect GOT
5410 and PLT reference counting (ie. we don't allow them to create GOT
5411 or PLT entries), there's no possibility or desire to optimize TLS
5412 relocs, and there's not much point in propagating relocs to shared
5413 libs that the dynamic linker won't relocate. */
5414 if ((sec
->flags
& SEC_ALLOC
) == 0)
5417 BFD_ASSERT (is_ppc64_elf (abfd
));
5419 htab
= ppc_hash_table (info
);
5423 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5424 FALSE
, FALSE
, TRUE
);
5425 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5426 FALSE
, FALSE
, TRUE
);
5427 symtab_hdr
= &elf_symtab_hdr (abfd
);
5428 sym_hashes
= elf_sym_hashes (abfd
);
5430 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5431 rel_end
= relocs
+ sec
->reloc_count
;
5432 for (rel
= relocs
; rel
< rel_end
; rel
++)
5434 unsigned long r_symndx
;
5435 struct elf_link_hash_entry
*h
;
5436 enum elf_ppc64_reloc_type r_type
;
5438 struct _ppc64_elf_section_data
*ppc64_sec
;
5439 struct plt_entry
**ifunc
, **plt_list
;
5441 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5442 if (r_symndx
< symtab_hdr
->sh_info
)
5446 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5447 h
= elf_follow_link (h
);
5449 if (h
== htab
->elf
.hgot
)
5450 sec
->has_toc_reloc
= 1;
5457 if (h
->type
== STT_GNU_IFUNC
)
5460 ifunc
= &h
->plt
.plist
;
5465 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5470 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5472 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5473 rel
->r_addend
, PLT_IFUNC
);
5479 r_type
= ELF64_R_TYPE (rel
->r_info
);
5484 /* These special tls relocs tie a call to __tls_get_addr with
5485 its parameter symbol. */
5488 case R_PPC64_GOT_TLSLD16
:
5489 case R_PPC64_GOT_TLSLD16_LO
:
5490 case R_PPC64_GOT_TLSLD16_HI
:
5491 case R_PPC64_GOT_TLSLD16_HA
:
5492 tls_type
= TLS_TLS
| TLS_LD
;
5495 case R_PPC64_GOT_TLSGD16
:
5496 case R_PPC64_GOT_TLSGD16_LO
:
5497 case R_PPC64_GOT_TLSGD16_HI
:
5498 case R_PPC64_GOT_TLSGD16_HA
:
5499 tls_type
= TLS_TLS
| TLS_GD
;
5502 case R_PPC64_GOT_TPREL16_DS
:
5503 case R_PPC64_GOT_TPREL16_LO_DS
:
5504 case R_PPC64_GOT_TPREL16_HI
:
5505 case R_PPC64_GOT_TPREL16_HA
:
5506 if (bfd_link_dll (info
))
5507 info
->flags
|= DF_STATIC_TLS
;
5508 tls_type
= TLS_TLS
| TLS_TPREL
;
5511 case R_PPC64_GOT_DTPREL16_DS
:
5512 case R_PPC64_GOT_DTPREL16_LO_DS
:
5513 case R_PPC64_GOT_DTPREL16_HI
:
5514 case R_PPC64_GOT_DTPREL16_HA
:
5515 tls_type
= TLS_TLS
| TLS_DTPREL
;
5517 sec
->has_tls_reloc
= 1;
5521 case R_PPC64_GOT16_DS
:
5522 case R_PPC64_GOT16_HA
:
5523 case R_PPC64_GOT16_HI
:
5524 case R_PPC64_GOT16_LO
:
5525 case R_PPC64_GOT16_LO_DS
:
5526 /* This symbol requires a global offset table entry. */
5527 sec
->has_toc_reloc
= 1;
5528 if (r_type
== R_PPC64_GOT_TLSLD16
5529 || r_type
== R_PPC64_GOT_TLSGD16
5530 || r_type
== R_PPC64_GOT_TPREL16_DS
5531 || r_type
== R_PPC64_GOT_DTPREL16_DS
5532 || r_type
== R_PPC64_GOT16
5533 || r_type
== R_PPC64_GOT16_DS
)
5535 htab
->do_multi_toc
= 1;
5536 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5539 if (ppc64_elf_tdata (abfd
)->got
== NULL
5540 && !create_got_section (abfd
, info
))
5545 struct ppc_link_hash_entry
*eh
;
5546 struct got_entry
*ent
;
5548 eh
= (struct ppc_link_hash_entry
*) h
;
5549 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5550 if (ent
->addend
== rel
->r_addend
5551 && ent
->owner
== abfd
5552 && ent
->tls_type
== tls_type
)
5556 bfd_size_type amt
= sizeof (*ent
);
5557 ent
= bfd_alloc (abfd
, amt
);
5560 ent
->next
= eh
->elf
.got
.glist
;
5561 ent
->addend
= rel
->r_addend
;
5563 ent
->tls_type
= tls_type
;
5564 ent
->is_indirect
= FALSE
;
5565 ent
->got
.refcount
= 0;
5566 eh
->elf
.got
.glist
= ent
;
5568 ent
->got
.refcount
+= 1;
5569 eh
->tls_mask
|= tls_type
;
5572 /* This is a global offset table entry for a local symbol. */
5573 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5574 rel
->r_addend
, tls_type
))
5577 /* We may also need a plt entry if the symbol turns out to be
5579 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5581 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5586 case R_PPC64_PLT16_HA
:
5587 case R_PPC64_PLT16_HI
:
5588 case R_PPC64_PLT16_LO
:
5591 /* This symbol requires a procedure linkage table entry. */
5596 if (h
->root
.root
.string
[0] == '.'
5597 && h
->root
.root
.string
[1] != '\0')
5598 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5599 plt_list
= &h
->plt
.plist
;
5601 if (plt_list
== NULL
)
5603 /* It does not make sense to have a procedure linkage
5604 table entry for a non-ifunc local symbol. */
5605 info
->callbacks
->einfo
5606 /* xgettext:c-format */
5607 (_("%H: %s reloc against local symbol\n"),
5608 abfd
, sec
, rel
->r_offset
,
5609 ppc64_elf_howto_table
[r_type
]->name
);
5610 bfd_set_error (bfd_error_bad_value
);
5613 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5617 /* The following relocations don't need to propagate the
5618 relocation if linking a shared object since they are
5619 section relative. */
5620 case R_PPC64_SECTOFF
:
5621 case R_PPC64_SECTOFF_LO
:
5622 case R_PPC64_SECTOFF_HI
:
5623 case R_PPC64_SECTOFF_HA
:
5624 case R_PPC64_SECTOFF_DS
:
5625 case R_PPC64_SECTOFF_LO_DS
:
5626 case R_PPC64_DTPREL16
:
5627 case R_PPC64_DTPREL16_LO
:
5628 case R_PPC64_DTPREL16_HI
:
5629 case R_PPC64_DTPREL16_HA
:
5630 case R_PPC64_DTPREL16_DS
:
5631 case R_PPC64_DTPREL16_LO_DS
:
5632 case R_PPC64_DTPREL16_HIGH
:
5633 case R_PPC64_DTPREL16_HIGHA
:
5634 case R_PPC64_DTPREL16_HIGHER
:
5635 case R_PPC64_DTPREL16_HIGHERA
:
5636 case R_PPC64_DTPREL16_HIGHEST
:
5637 case R_PPC64_DTPREL16_HIGHESTA
:
5642 case R_PPC64_REL16_LO
:
5643 case R_PPC64_REL16_HI
:
5644 case R_PPC64_REL16_HA
:
5645 case R_PPC64_REL16DX_HA
:
5648 /* Not supported as a dynamic relocation. */
5649 case R_PPC64_ADDR64_LOCAL
:
5650 if (bfd_link_pic (info
))
5652 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5654 /* xgettext:c-format */
5655 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5656 "in shared libraries and PIEs.\n"),
5657 abfd
, sec
, rel
->r_offset
,
5658 ppc64_elf_howto_table
[r_type
]->name
);
5659 bfd_set_error (bfd_error_bad_value
);
5665 case R_PPC64_TOC16_DS
:
5666 htab
->do_multi_toc
= 1;
5667 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5669 case R_PPC64_TOC16_LO
:
5670 case R_PPC64_TOC16_HI
:
5671 case R_PPC64_TOC16_HA
:
5672 case R_PPC64_TOC16_LO_DS
:
5673 sec
->has_toc_reloc
= 1;
5680 /* This relocation describes the C++ object vtable hierarchy.
5681 Reconstruct it for later use during GC. */
5682 case R_PPC64_GNU_VTINHERIT
:
5683 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5687 /* This relocation describes which C++ vtable entries are actually
5688 used. Record for later use during GC. */
5689 case R_PPC64_GNU_VTENTRY
:
5690 BFD_ASSERT (h
!= NULL
);
5692 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5697 case R_PPC64_REL14_BRTAKEN
:
5698 case R_PPC64_REL14_BRNTAKEN
:
5700 asection
*dest
= NULL
;
5702 /* Heuristic: If jumping outside our section, chances are
5703 we are going to need a stub. */
5706 /* If the sym is weak it may be overridden later, so
5707 don't assume we know where a weak sym lives. */
5708 if (h
->root
.type
== bfd_link_hash_defined
)
5709 dest
= h
->root
.u
.def
.section
;
5713 Elf_Internal_Sym
*isym
;
5715 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5720 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5724 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5733 if (h
->root
.root
.string
[0] == '.'
5734 && h
->root
.root
.string
[1] != '\0')
5735 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5737 if (h
== tga
|| h
== dottga
)
5739 sec
->has_tls_reloc
= 1;
5741 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5742 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5743 /* We have a new-style __tls_get_addr call with
5747 /* Mark this section as having an old-style call. */
5748 sec
->has_tls_get_addr_call
= 1;
5750 plt_list
= &h
->plt
.plist
;
5753 /* We may need a .plt entry if the function this reloc
5754 refers to is in a shared lib. */
5756 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5760 case R_PPC64_ADDR14
:
5761 case R_PPC64_ADDR14_BRNTAKEN
:
5762 case R_PPC64_ADDR14_BRTAKEN
:
5763 case R_PPC64_ADDR24
:
5766 case R_PPC64_TPREL64
:
5767 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5768 if (bfd_link_dll (info
))
5769 info
->flags
|= DF_STATIC_TLS
;
5772 case R_PPC64_DTPMOD64
:
5773 if (rel
+ 1 < rel_end
5774 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5775 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5776 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5778 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5781 case R_PPC64_DTPREL64
:
5782 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5784 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5785 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5786 /* This is the second reloc of a dtpmod, dtprel pair.
5787 Don't mark with TLS_DTPREL. */
5791 sec
->has_tls_reloc
= 1;
5794 struct ppc_link_hash_entry
*eh
;
5795 eh
= (struct ppc_link_hash_entry
*) h
;
5796 eh
->tls_mask
|= tls_type
;
5799 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5800 rel
->r_addend
, tls_type
))
5803 ppc64_sec
= ppc64_elf_section_data (sec
);
5804 if (ppc64_sec
->sec_type
!= sec_toc
)
5808 /* One extra to simplify get_tls_mask. */
5809 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5810 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5811 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5813 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5814 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5815 if (ppc64_sec
->u
.toc
.add
== NULL
)
5817 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5818 ppc64_sec
->sec_type
= sec_toc
;
5820 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5821 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5822 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5824 /* Mark the second slot of a GD or LD entry.
5825 -1 to indicate GD and -2 to indicate LD. */
5826 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5827 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5828 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5829 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5832 case R_PPC64_TPREL16
:
5833 case R_PPC64_TPREL16_LO
:
5834 case R_PPC64_TPREL16_HI
:
5835 case R_PPC64_TPREL16_HA
:
5836 case R_PPC64_TPREL16_DS
:
5837 case R_PPC64_TPREL16_LO_DS
:
5838 case R_PPC64_TPREL16_HIGH
:
5839 case R_PPC64_TPREL16_HIGHA
:
5840 case R_PPC64_TPREL16_HIGHER
:
5841 case R_PPC64_TPREL16_HIGHERA
:
5842 case R_PPC64_TPREL16_HIGHEST
:
5843 case R_PPC64_TPREL16_HIGHESTA
:
5844 if (bfd_link_dll (info
))
5845 info
->flags
|= DF_STATIC_TLS
;
5848 case R_PPC64_ADDR64
:
5850 && rel
+ 1 < rel_end
5851 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5854 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5858 case R_PPC64_ADDR16
:
5859 case R_PPC64_ADDR16_DS
:
5860 case R_PPC64_ADDR16_HA
:
5861 case R_PPC64_ADDR16_HI
:
5862 case R_PPC64_ADDR16_HIGH
:
5863 case R_PPC64_ADDR16_HIGHA
:
5864 case R_PPC64_ADDR16_HIGHER
:
5865 case R_PPC64_ADDR16_HIGHERA
:
5866 case R_PPC64_ADDR16_HIGHEST
:
5867 case R_PPC64_ADDR16_HIGHESTA
:
5868 case R_PPC64_ADDR16_LO
:
5869 case R_PPC64_ADDR16_LO_DS
:
5870 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5871 && rel
->r_addend
== 0)
5873 /* We may need a .plt entry if this reloc refers to a
5874 function in a shared lib. */
5875 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5877 h
->pointer_equality_needed
= 1;
5884 case R_PPC64_ADDR32
:
5885 case R_PPC64_UADDR16
:
5886 case R_PPC64_UADDR32
:
5887 case R_PPC64_UADDR64
:
5889 if (h
!= NULL
&& !bfd_link_pic (info
))
5890 /* We may need a copy reloc. */
5893 /* Don't propagate .opd relocs. */
5894 if (NO_OPD_RELOCS
&& is_opd
)
5897 /* If we are creating a shared library, and this is a reloc
5898 against a global symbol, or a non PC relative reloc
5899 against a local symbol, then we need to copy the reloc
5900 into the shared library. However, if we are linking with
5901 -Bsymbolic, we do not need to copy a reloc against a
5902 global symbol which is defined in an object we are
5903 including in the link (i.e., DEF_REGULAR is set). At
5904 this point we have not seen all the input files, so it is
5905 possible that DEF_REGULAR is not set now but will be set
5906 later (it is never cleared). In case of a weak definition,
5907 DEF_REGULAR may be cleared later by a strong definition in
5908 a shared library. We account for that possibility below by
5909 storing information in the dyn_relocs field of the hash
5910 table entry. A similar situation occurs when creating
5911 shared libraries and symbol visibility changes render the
5914 If on the other hand, we are creating an executable, we
5915 may need to keep relocations for symbols satisfied by a
5916 dynamic library if we manage to avoid copy relocs for the
5919 if ((bfd_link_pic (info
)
5920 && (must_be_dyn_reloc (info
, r_type
)
5922 && (!SYMBOLIC_BIND (info
, h
)
5923 || h
->root
.type
== bfd_link_hash_defweak
5924 || !h
->def_regular
))))
5925 || (ELIMINATE_COPY_RELOCS
5926 && !bfd_link_pic (info
)
5928 && (h
->root
.type
== bfd_link_hash_defweak
5929 || !h
->def_regular
))
5930 || (!bfd_link_pic (info
)
5933 /* We must copy these reloc types into the output file.
5934 Create a reloc section in dynobj and make room for
5938 sreloc
= _bfd_elf_make_dynamic_reloc_section
5939 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5945 /* If this is a global symbol, we count the number of
5946 relocations we need for this symbol. */
5949 struct elf_dyn_relocs
*p
;
5950 struct elf_dyn_relocs
**head
;
5952 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5954 if (p
== NULL
|| p
->sec
!= sec
)
5956 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5966 if (!must_be_dyn_reloc (info
, r_type
))
5971 /* Track dynamic relocs needed for local syms too.
5972 We really need local syms available to do this
5974 struct ppc_dyn_relocs
*p
;
5975 struct ppc_dyn_relocs
**head
;
5976 bfd_boolean is_ifunc
;
5979 Elf_Internal_Sym
*isym
;
5981 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5986 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5990 vpp
= &elf_section_data (s
)->local_dynrel
;
5991 head
= (struct ppc_dyn_relocs
**) vpp
;
5992 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5994 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5996 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5998 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6004 p
->ifunc
= is_ifunc
;
6020 /* Merge backend specific data from an object file to the output
6021 object file when linking. */
6024 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6026 bfd
*obfd
= info
->output_bfd
;
6027 unsigned long iflags
, oflags
;
6029 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6032 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6035 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6038 iflags
= elf_elfheader (ibfd
)->e_flags
;
6039 oflags
= elf_elfheader (obfd
)->e_flags
;
6041 if (iflags
& ~EF_PPC64_ABI
)
6044 /* xgettext:c-format */
6045 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6046 bfd_set_error (bfd_error_bad_value
);
6049 else if (iflags
!= oflags
&& iflags
!= 0)
6052 /* xgettext:c-format */
6053 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6054 ibfd
, iflags
, oflags
);
6055 bfd_set_error (bfd_error_bad_value
);
6059 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6061 /* Merge Tag_compatibility attributes and any common GNU ones. */
6062 _bfd_elf_merge_object_attributes (ibfd
, info
);
6068 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6070 /* Print normal ELF private data. */
6071 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6073 if (elf_elfheader (abfd
)->e_flags
!= 0)
6077 fprintf (file
, _("private flags = 0x%lx:"),
6078 elf_elfheader (abfd
)->e_flags
);
6080 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6081 fprintf (file
, _(" [abiv%ld]"),
6082 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6089 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6090 of the code entry point, and its section, which must be in the same
6091 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6094 opd_entry_value (asection
*opd_sec
,
6096 asection
**code_sec
,
6098 bfd_boolean in_code_sec
)
6100 bfd
*opd_bfd
= opd_sec
->owner
;
6101 Elf_Internal_Rela
*relocs
;
6102 Elf_Internal_Rela
*lo
, *hi
, *look
;
6105 /* No relocs implies we are linking a --just-symbols object, or looking
6106 at a final linked executable with addr2line or somesuch. */
6107 if (opd_sec
->reloc_count
== 0)
6109 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6111 if (contents
== NULL
)
6113 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6114 return (bfd_vma
) -1;
6115 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6118 /* PR 17512: file: 64b9dfbb. */
6119 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6120 return (bfd_vma
) -1;
6122 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6123 if (code_sec
!= NULL
)
6125 asection
*sec
, *likely
= NULL
;
6131 && val
< sec
->vma
+ sec
->size
)
6137 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6139 && (sec
->flags
& SEC_LOAD
) != 0
6140 && (sec
->flags
& SEC_ALLOC
) != 0)
6145 if (code_off
!= NULL
)
6146 *code_off
= val
- likely
->vma
;
6152 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6154 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6156 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6157 /* PR 17512: file: df8e1fd6. */
6159 return (bfd_vma
) -1;
6161 /* Go find the opd reloc at the sym address. */
6163 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6167 look
= lo
+ (hi
- lo
) / 2;
6168 if (look
->r_offset
< offset
)
6170 else if (look
->r_offset
> offset
)
6174 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6176 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6177 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6179 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6180 asection
*sec
= NULL
;
6182 if (symndx
>= symtab_hdr
->sh_info
6183 && elf_sym_hashes (opd_bfd
) != NULL
)
6185 struct elf_link_hash_entry
**sym_hashes
;
6186 struct elf_link_hash_entry
*rh
;
6188 sym_hashes
= elf_sym_hashes (opd_bfd
);
6189 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6192 rh
= elf_follow_link (rh
);
6193 if (rh
->root
.type
!= bfd_link_hash_defined
6194 && rh
->root
.type
!= bfd_link_hash_defweak
)
6196 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6198 val
= rh
->root
.u
.def
.value
;
6199 sec
= rh
->root
.u
.def
.section
;
6206 Elf_Internal_Sym
*sym
;
6208 if (symndx
< symtab_hdr
->sh_info
)
6210 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6213 size_t symcnt
= symtab_hdr
->sh_info
;
6214 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6219 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6225 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6231 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6234 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6235 val
= sym
->st_value
;
6238 val
+= look
->r_addend
;
6239 if (code_off
!= NULL
)
6241 if (code_sec
!= NULL
)
6243 if (in_code_sec
&& *code_sec
!= sec
)
6248 if (sec
->output_section
!= NULL
)
6249 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6258 /* If the ELF symbol SYM might be a function in SEC, return the
6259 function size and set *CODE_OFF to the function's entry point,
6260 otherwise return zero. */
6262 static bfd_size_type
6263 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6268 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6269 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6273 if (!(sym
->flags
& BSF_SYNTHETIC
))
6274 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6276 if (strcmp (sym
->section
->name
, ".opd") == 0)
6278 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6279 bfd_vma symval
= sym
->value
;
6282 && opd
->adjust
!= NULL
6283 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6285 /* opd_entry_value will use cached relocs that have been
6286 adjusted, but with raw symbols. That means both local
6287 and global symbols need adjusting. */
6288 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6294 if (opd_entry_value (sym
->section
, symval
,
6295 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6297 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6298 symbol. This size has nothing to do with the code size of the
6299 function, which is what we're supposed to return, but the
6300 code size isn't available without looking up the dot-sym.
6301 However, doing that would be a waste of time particularly
6302 since elf_find_function will look at the dot-sym anyway.
6303 Now, elf_find_function will keep the largest size of any
6304 function sym found at the code address of interest, so return
6305 1 here to avoid it incorrectly caching a larger function size
6306 for a small function. This does mean we return the wrong
6307 size for a new-ABI function of size 24, but all that does is
6308 disable caching for such functions. */
6314 if (sym
->section
!= sec
)
6316 *code_off
= sym
->value
;
6323 /* Return true if symbol is a strong function defined in an ELFv2
6324 object with st_other localentry bits of zero, ie. its local entry
6325 point coincides with its global entry point. */
6328 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6331 && h
->type
== STT_FUNC
6332 && h
->root
.type
== bfd_link_hash_defined
6333 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6334 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6335 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6336 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6339 /* Return true if symbol is defined in a regular object file. */
6342 is_static_defined (struct elf_link_hash_entry
*h
)
6344 return ((h
->root
.type
== bfd_link_hash_defined
6345 || h
->root
.type
== bfd_link_hash_defweak
)
6346 && h
->root
.u
.def
.section
!= NULL
6347 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6350 /* If FDH is a function descriptor symbol, return the associated code
6351 entry symbol if it is defined. Return NULL otherwise. */
6353 static struct ppc_link_hash_entry
*
6354 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6356 if (fdh
->is_func_descriptor
)
6358 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6359 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6360 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6366 /* If FH is a function code entry symbol, return the associated
6367 function descriptor symbol if it is defined. Return NULL otherwise. */
6369 static struct ppc_link_hash_entry
*
6370 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6373 && fh
->oh
->is_func_descriptor
)
6375 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6376 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6377 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6383 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6385 /* Garbage collect sections, after first dealing with dot-symbols. */
6388 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6390 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6392 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6394 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6395 htab
->need_func_desc_adj
= 0;
6397 return bfd_elf_gc_sections (abfd
, info
);
6400 /* Mark all our entry sym sections, both opd and code section. */
6403 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6405 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6406 struct bfd_sym_chain
*sym
;
6411 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6413 struct ppc_link_hash_entry
*eh
, *fh
;
6416 eh
= (struct ppc_link_hash_entry
*)
6417 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6420 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6421 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6424 fh
= defined_code_entry (eh
);
6427 sec
= fh
->elf
.root
.u
.def
.section
;
6428 sec
->flags
|= SEC_KEEP
;
6430 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6431 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6432 eh
->elf
.root
.u
.def
.value
,
6433 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6434 sec
->flags
|= SEC_KEEP
;
6436 sec
= eh
->elf
.root
.u
.def
.section
;
6437 sec
->flags
|= SEC_KEEP
;
6441 /* Mark sections containing dynamically referenced symbols. When
6442 building shared libraries, we must assume that any visible symbol is
6446 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6448 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6449 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6450 struct ppc_link_hash_entry
*fdh
;
6451 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6453 /* Dynamic linking info is on the func descriptor sym. */
6454 fdh
= defined_func_desc (eh
);
6458 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6459 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6460 && ((eh
->elf
.ref_dynamic
&& !eh
->elf
.forced_local
)
6461 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6462 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6463 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6464 && (!bfd_link_executable (info
)
6465 || info
->gc_keep_exported
6466 || info
->export_dynamic
6469 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6470 && (eh
->elf
.versioned
>= versioned
6471 || !bfd_hide_sym_by_version (info
->version_info
,
6472 eh
->elf
.root
.root
.string
)))))
6475 struct ppc_link_hash_entry
*fh
;
6477 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6479 /* Function descriptor syms cause the associated
6480 function code sym section to be marked. */
6481 fh
= defined_code_entry (eh
);
6484 code_sec
= fh
->elf
.root
.u
.def
.section
;
6485 code_sec
->flags
|= SEC_KEEP
;
6487 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6488 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6489 eh
->elf
.root
.u
.def
.value
,
6490 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6491 code_sec
->flags
|= SEC_KEEP
;
6497 /* Return the section that should be marked against GC for a given
6501 ppc64_elf_gc_mark_hook (asection
*sec
,
6502 struct bfd_link_info
*info
,
6503 Elf_Internal_Rela
*rel
,
6504 struct elf_link_hash_entry
*h
,
6505 Elf_Internal_Sym
*sym
)
6509 /* Syms return NULL if we're marking .opd, so we avoid marking all
6510 function sections, as all functions are referenced in .opd. */
6512 if (get_opd_info (sec
) != NULL
)
6517 enum elf_ppc64_reloc_type r_type
;
6518 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6520 r_type
= ELF64_R_TYPE (rel
->r_info
);
6523 case R_PPC64_GNU_VTINHERIT
:
6524 case R_PPC64_GNU_VTENTRY
:
6528 switch (h
->root
.type
)
6530 case bfd_link_hash_defined
:
6531 case bfd_link_hash_defweak
:
6532 eh
= (struct ppc_link_hash_entry
*) h
;
6533 fdh
= defined_func_desc (eh
);
6536 /* -mcall-aixdesc code references the dot-symbol on
6537 a call reloc. Mark the function descriptor too
6538 against garbage collection. */
6540 if (fdh
->elf
.is_weakalias
)
6541 weakdef (&fdh
->elf
)->mark
= 1;
6545 /* Function descriptor syms cause the associated
6546 function code sym section to be marked. */
6547 fh
= defined_code_entry (eh
);
6550 /* They also mark their opd section. */
6551 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6553 rsec
= fh
->elf
.root
.u
.def
.section
;
6555 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6556 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6557 eh
->elf
.root
.u
.def
.value
,
6558 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6559 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6561 rsec
= h
->root
.u
.def
.section
;
6564 case bfd_link_hash_common
:
6565 rsec
= h
->root
.u
.c
.p
->section
;
6569 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6575 struct _opd_sec_data
*opd
;
6577 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6578 opd
= get_opd_info (rsec
);
6579 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6583 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6590 /* The maximum size of .sfpr. */
6591 #define SFPR_MAX (218*4)
6593 struct sfpr_def_parms
6595 const char name
[12];
6596 unsigned char lo
, hi
;
6597 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6598 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6601 /* Auto-generate _save*, _rest* functions in .sfpr.
6602 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6606 sfpr_define (struct bfd_link_info
*info
,
6607 const struct sfpr_def_parms
*parm
,
6610 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6612 size_t len
= strlen (parm
->name
);
6613 bfd_boolean writing
= FALSE
;
6619 memcpy (sym
, parm
->name
, len
);
6622 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6624 struct ppc_link_hash_entry
*h
;
6626 sym
[len
+ 0] = i
/ 10 + '0';
6627 sym
[len
+ 1] = i
% 10 + '0';
6628 h
= (struct ppc_link_hash_entry
*)
6629 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6630 if (stub_sec
!= NULL
)
6633 && h
->elf
.root
.type
== bfd_link_hash_defined
6634 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6636 struct elf_link_hash_entry
*s
;
6638 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6639 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6642 if (s
->root
.type
== bfd_link_hash_new
6643 || (s
->root
.type
= bfd_link_hash_defined
6644 && s
->root
.u
.def
.section
== stub_sec
))
6646 s
->root
.type
= bfd_link_hash_defined
;
6647 s
->root
.u
.def
.section
= stub_sec
;
6648 s
->root
.u
.def
.value
= (stub_sec
->size
6649 + h
->elf
.root
.u
.def
.value
);
6652 s
->ref_regular_nonweak
= 1;
6653 s
->forced_local
= 1;
6655 s
->root
.linker_def
= 1;
6663 if (!h
->elf
.def_regular
)
6665 h
->elf
.root
.type
= bfd_link_hash_defined
;
6666 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6667 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6668 h
->elf
.type
= STT_FUNC
;
6669 h
->elf
.def_regular
= 1;
6671 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6673 if (htab
->sfpr
->contents
== NULL
)
6675 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6676 if (htab
->sfpr
->contents
== NULL
)
6683 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6685 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6687 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6688 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6696 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6698 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6703 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6705 p
= savegpr0 (abfd
, p
, r
);
6706 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6708 bfd_put_32 (abfd
, BLR
, p
);
6713 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6715 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6720 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6722 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6724 p
= restgpr0 (abfd
, p
, r
);
6725 bfd_put_32 (abfd
, MTLR_R0
, p
);
6729 p
= restgpr0 (abfd
, p
, 30);
6730 p
= restgpr0 (abfd
, p
, 31);
6732 bfd_put_32 (abfd
, BLR
, p
);
6737 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6739 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6744 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6746 p
= savegpr1 (abfd
, p
, r
);
6747 bfd_put_32 (abfd
, BLR
, p
);
6752 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6754 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6759 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6761 p
= restgpr1 (abfd
, p
, r
);
6762 bfd_put_32 (abfd
, BLR
, p
);
6767 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6769 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6774 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6776 p
= savefpr (abfd
, p
, r
);
6777 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6779 bfd_put_32 (abfd
, BLR
, p
);
6784 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6786 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6791 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6793 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6795 p
= restfpr (abfd
, p
, r
);
6796 bfd_put_32 (abfd
, MTLR_R0
, p
);
6800 p
= restfpr (abfd
, p
, 30);
6801 p
= restfpr (abfd
, p
, 31);
6803 bfd_put_32 (abfd
, BLR
, p
);
6808 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6810 p
= savefpr (abfd
, p
, r
);
6811 bfd_put_32 (abfd
, BLR
, p
);
6816 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6818 p
= restfpr (abfd
, p
, r
);
6819 bfd_put_32 (abfd
, BLR
, p
);
6824 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6826 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6828 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6833 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6835 p
= savevr (abfd
, p
, r
);
6836 bfd_put_32 (abfd
, BLR
, p
);
6841 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6843 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6845 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6850 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6852 p
= restvr (abfd
, p
, r
);
6853 bfd_put_32 (abfd
, BLR
, p
);
6857 /* Called via elf_link_hash_traverse to transfer dynamic linking
6858 information on function code symbol entries to their corresponding
6859 function descriptor symbol entries. */
6862 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6864 struct bfd_link_info
*info
;
6865 struct ppc_link_hash_table
*htab
;
6866 struct ppc_link_hash_entry
*fh
;
6867 struct ppc_link_hash_entry
*fdh
;
6868 bfd_boolean force_local
;
6870 fh
= (struct ppc_link_hash_entry
*) h
;
6871 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6877 if (fh
->elf
.root
.root
.string
[0] != '.'
6878 || fh
->elf
.root
.root
.string
[1] == '\0')
6882 htab
= ppc_hash_table (info
);
6886 /* Find the corresponding function descriptor symbol. */
6887 fdh
= lookup_fdh (fh
, htab
);
6889 /* Resolve undefined references to dot-symbols as the value
6890 in the function descriptor, if we have one in a regular object.
6891 This is to satisfy cases like ".quad .foo". Calls to functions
6892 in dynamic objects are handled elsewhere. */
6893 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
6894 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6895 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
6896 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6897 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6898 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6899 fdh
->elf
.root
.u
.def
.value
,
6900 &fh
->elf
.root
.u
.def
.section
,
6901 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6903 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6904 fh
->elf
.forced_local
= 1;
6905 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6906 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6909 if (!fh
->elf
.dynamic
)
6911 struct plt_entry
*ent
;
6913 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6914 if (ent
->plt
.refcount
> 0)
6920 /* Create a descriptor as undefined if necessary. */
6922 && !bfd_link_executable (info
)
6923 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6924 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6926 fdh
= make_fdh (info
, fh
);
6931 /* We can't support overriding of symbols on a fake descriptor. */
6934 && (fh
->elf
.root
.type
== bfd_link_hash_defined
6935 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
6936 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6938 /* Transfer dynamic linking information to the function descriptor. */
6941 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6942 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6943 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6944 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6945 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
6946 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
6947 || fh
->elf
.type
== STT_FUNC
6948 || fh
->elf
.type
== STT_GNU_IFUNC
);
6949 move_plt_plist (fh
, fdh
);
6951 if (!fdh
->elf
.forced_local
6952 && fh
->elf
.dynindx
!= -1)
6953 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6957 /* Now that the info is on the function descriptor, clear the
6958 function code sym info. Any function code syms for which we
6959 don't have a definition in a regular file, we force local.
6960 This prevents a shared library from exporting syms that have
6961 been imported from another library. Function code syms that
6962 are really in the library we must leave global to prevent the
6963 linker dragging in a definition from a static library. */
6964 force_local
= (!fh
->elf
.def_regular
6966 || !fdh
->elf
.def_regular
6967 || fdh
->elf
.forced_local
);
6968 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6973 static const struct sfpr_def_parms save_res_funcs
[] =
6975 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6976 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6977 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6978 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6979 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6980 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6981 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6982 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6983 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6984 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6985 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6986 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6989 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6990 this hook to a) provide some gcc support functions, and b) transfer
6991 dynamic linking information gathered so far on function code symbol
6992 entries, to their corresponding function descriptor symbol entries. */
6995 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6996 struct bfd_link_info
*info
)
6998 struct ppc_link_hash_table
*htab
;
7000 htab
= ppc_hash_table (info
);
7004 /* Provide any missing _save* and _rest* functions. */
7005 if (htab
->sfpr
!= NULL
)
7009 htab
->sfpr
->size
= 0;
7010 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7011 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7013 if (htab
->sfpr
->size
== 0)
7014 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7017 if (bfd_link_relocatable (info
))
7020 if (htab
->elf
.hgot
!= NULL
)
7022 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7023 /* Make .TOC. defined so as to prevent it being made dynamic.
7024 The wrong value here is fixed later in ppc64_elf_set_toc. */
7025 if (!htab
->elf
.hgot
->def_regular
7026 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7028 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7029 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7030 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7031 htab
->elf
.hgot
->def_regular
= 1;
7032 htab
->elf
.hgot
->root
.linker_def
= 1;
7034 htab
->elf
.hgot
->type
= STT_OBJECT
;
7035 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7039 if (htab
->need_func_desc_adj
)
7041 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7042 htab
->need_func_desc_adj
= 0;
7048 /* Find dynamic relocs for H that apply to read-only sections. */
7051 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7053 struct ppc_link_hash_entry
*eh
;
7054 struct elf_dyn_relocs
*p
;
7056 eh
= (struct ppc_link_hash_entry
*) h
;
7057 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7059 asection
*s
= p
->sec
->output_section
;
7061 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7067 /* Return true if we have dynamic relocs against H or any of its weak
7068 aliases, that apply to read-only sections. Cannot be used after
7069 size_dynamic_sections. */
7072 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7074 struct ppc_link_hash_entry
*eh
;
7076 eh
= (struct ppc_link_hash_entry
*) h
;
7079 if (readonly_dynrelocs (&eh
->elf
))
7081 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.u
.alias
;
7082 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7087 /* Return whether EH has pc-relative dynamic relocs. */
7090 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7092 struct elf_dyn_relocs
*p
;
7094 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7095 if (p
->pc_count
!= 0)
7100 /* Return true if a global entry stub will be created for H. Valid
7101 for ELFv2 before plt entries have been allocated. */
7104 global_entry_stub (struct elf_link_hash_entry
*h
)
7106 struct plt_entry
*pent
;
7108 if (!h
->pointer_equality_needed
7112 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7113 if (pent
->plt
.refcount
> 0
7114 && pent
->addend
== 0)
7120 /* Adjust a symbol defined by a dynamic object and referenced by a
7121 regular object. The current definition is in some section of the
7122 dynamic object, but we're not including those sections. We have to
7123 change the definition to something the rest of the link can
7127 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7128 struct elf_link_hash_entry
*h
)
7130 struct ppc_link_hash_table
*htab
;
7133 htab
= ppc_hash_table (info
);
7137 /* Deal with function syms. */
7138 if (h
->type
== STT_FUNC
7139 || h
->type
== STT_GNU_IFUNC
7142 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7143 || SYMBOL_CALLS_LOCAL (info
, h
)
7144 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7145 /* Discard dyn_relocs when non-pic if we've decided that a
7146 function symbol is local and not an ifunc. We keep dynamic
7147 relocs for ifuncs when local rather than always emitting a
7148 plt call stub for them and defining the symbol on the call
7149 stub. We can't do that for ELFv1 anyway (a function symbol
7150 is defined on a descriptor, not code) and it can be faster at
7151 run-time due to not needing to bounce through a stub. The
7152 dyn_relocs for ifuncs will be applied even in a static
7154 if (!bfd_link_pic (info
)
7155 && h
->type
!= STT_GNU_IFUNC
7157 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7159 /* Clear procedure linkage table information for any symbol that
7160 won't need a .plt entry. */
7161 struct plt_entry
*ent
;
7162 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7163 if (ent
->plt
.refcount
> 0)
7166 || (h
->type
!= STT_GNU_IFUNC
&& local
))
7168 h
->plt
.plist
= NULL
;
7170 h
->pointer_equality_needed
= 0;
7172 else if (abiversion (info
->output_bfd
) >= 2)
7174 /* Taking a function's address in a read/write section
7175 doesn't require us to define the function symbol in the
7176 executable on a global entry stub. A dynamic reloc can
7177 be used instead. The reason we prefer a few more dynamic
7178 relocs is that calling via a global entry stub costs a
7179 few more instructions, and pointer_equality_needed causes
7180 extra work in ld.so when resolving these symbols. */
7181 if (global_entry_stub (h
))
7183 if (!readonly_dynrelocs (h
))
7185 h
->pointer_equality_needed
= 0;
7186 /* If we haven't seen a branch reloc then we don't need
7189 h
->plt
.plist
= NULL
;
7191 else if (!bfd_link_pic (info
))
7192 /* We are going to be defining the function symbol on the
7193 plt stub, so no dyn_relocs needed when non-pic. */
7194 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7197 /* ELFv2 function symbols can't have copy relocs. */
7200 else if (!h
->needs_plt
7201 && !readonly_dynrelocs (h
))
7203 /* If we haven't seen a branch reloc then we don't need a
7205 h
->plt
.plist
= NULL
;
7206 h
->pointer_equality_needed
= 0;
7211 h
->plt
.plist
= NULL
;
7213 /* If this is a weak symbol, and there is a real definition, the
7214 processor independent code will have arranged for us to see the
7215 real definition first, and we can just use the same value. */
7216 if (h
->is_weakalias
)
7218 struct elf_link_hash_entry
*def
= weakdef (h
);
7219 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7220 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7221 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7222 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
7223 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
7224 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7228 /* If we are creating a shared library, we must presume that the
7229 only references to the symbol are via the global offset table.
7230 For such cases we need not do anything here; the relocations will
7231 be handled correctly by relocate_section. */
7232 if (bfd_link_pic (info
))
7235 /* If there are no references to this symbol that do not use the
7236 GOT, we don't need to generate a copy reloc. */
7237 if (!h
->non_got_ref
)
7240 /* Don't generate a copy reloc for symbols defined in the executable. */
7241 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7243 /* If -z nocopyreloc was given, don't generate them either. */
7244 || info
->nocopyreloc
7246 /* If we don't find any dynamic relocs in read-only sections, then
7247 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7248 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7250 /* Protected variables do not work with .dynbss. The copy in
7251 .dynbss won't be used by the shared library with the protected
7252 definition for the variable. Text relocations are preferable
7253 to an incorrect program. */
7254 || h
->protected_def
)
7257 if (h
->plt
.plist
!= NULL
)
7259 /* We should never get here, but unfortunately there are versions
7260 of gcc out there that improperly (for this ABI) put initialized
7261 function pointers, vtable refs and suchlike in read-only
7262 sections. Allow them to proceed, but warn that this might
7263 break at runtime. */
7264 info
->callbacks
->einfo
7265 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7266 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7267 h
->root
.root
.string
);
7270 /* This is a reference to a symbol defined by a dynamic object which
7271 is not a function. */
7273 /* We must allocate the symbol in our .dynbss section, which will
7274 become part of the .bss section of the executable. There will be
7275 an entry for this symbol in the .dynsym section. The dynamic
7276 object will contain position independent code, so all references
7277 from the dynamic object to this symbol will go through the global
7278 offset table. The dynamic linker will use the .dynsym entry to
7279 determine the address it must put in the global offset table, so
7280 both the dynamic object and the regular object will refer to the
7281 same memory location for the variable. */
7282 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7284 s
= htab
->elf
.sdynrelro
;
7285 srel
= htab
->elf
.sreldynrelro
;
7289 s
= htab
->elf
.sdynbss
;
7290 srel
= htab
->elf
.srelbss
;
7292 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7294 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7295 linker to copy the initial value out of the dynamic object
7296 and into the runtime process image. */
7297 srel
->size
+= sizeof (Elf64_External_Rela
);
7301 /* We no longer want dyn_relocs. */
7302 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7303 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7306 /* If given a function descriptor symbol, hide both the function code
7307 sym and the descriptor. */
7309 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7310 struct elf_link_hash_entry
*h
,
7311 bfd_boolean force_local
)
7313 struct ppc_link_hash_entry
*eh
;
7314 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7316 eh
= (struct ppc_link_hash_entry
*) h
;
7317 if (eh
->is_func_descriptor
)
7319 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7324 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7327 /* We aren't supposed to use alloca in BFD because on
7328 systems which do not have alloca the version in libiberty
7329 calls xmalloc, which might cause the program to crash
7330 when it runs out of memory. This function doesn't have a
7331 return status, so there's no way to gracefully return an
7332 error. So cheat. We know that string[-1] can be safely
7333 accessed; It's either a string in an ELF string table,
7334 or allocated in an objalloc structure. */
7336 p
= eh
->elf
.root
.root
.string
- 1;
7339 fh
= (struct ppc_link_hash_entry
*)
7340 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7343 /* Unfortunately, if it so happens that the string we were
7344 looking for was allocated immediately before this string,
7345 then we overwrote the string terminator. That's the only
7346 reason the lookup should fail. */
7349 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7350 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7352 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7353 fh
= (struct ppc_link_hash_entry
*)
7354 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7363 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7368 get_sym_h (struct elf_link_hash_entry
**hp
,
7369 Elf_Internal_Sym
**symp
,
7371 unsigned char **tls_maskp
,
7372 Elf_Internal_Sym
**locsymsp
,
7373 unsigned long r_symndx
,
7376 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7378 if (r_symndx
>= symtab_hdr
->sh_info
)
7380 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7381 struct elf_link_hash_entry
*h
;
7383 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7384 h
= elf_follow_link (h
);
7392 if (symsecp
!= NULL
)
7394 asection
*symsec
= NULL
;
7395 if (h
->root
.type
== bfd_link_hash_defined
7396 || h
->root
.type
== bfd_link_hash_defweak
)
7397 symsec
= h
->root
.u
.def
.section
;
7401 if (tls_maskp
!= NULL
)
7403 struct ppc_link_hash_entry
*eh
;
7405 eh
= (struct ppc_link_hash_entry
*) h
;
7406 *tls_maskp
= &eh
->tls_mask
;
7411 Elf_Internal_Sym
*sym
;
7412 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7414 if (locsyms
== NULL
)
7416 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7417 if (locsyms
== NULL
)
7418 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7419 symtab_hdr
->sh_info
,
7420 0, NULL
, NULL
, NULL
);
7421 if (locsyms
== NULL
)
7423 *locsymsp
= locsyms
;
7425 sym
= locsyms
+ r_symndx
;
7433 if (symsecp
!= NULL
)
7434 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7436 if (tls_maskp
!= NULL
)
7438 struct got_entry
**lgot_ents
;
7439 unsigned char *tls_mask
;
7442 lgot_ents
= elf_local_got_ents (ibfd
);
7443 if (lgot_ents
!= NULL
)
7445 struct plt_entry
**local_plt
= (struct plt_entry
**)
7446 (lgot_ents
+ symtab_hdr
->sh_info
);
7447 unsigned char *lgot_masks
= (unsigned char *)
7448 (local_plt
+ symtab_hdr
->sh_info
);
7449 tls_mask
= &lgot_masks
[r_symndx
];
7451 *tls_maskp
= tls_mask
;
7457 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7458 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7459 type suitable for optimization, and 1 otherwise. */
7462 get_tls_mask (unsigned char **tls_maskp
,
7463 unsigned long *toc_symndx
,
7464 bfd_vma
*toc_addend
,
7465 Elf_Internal_Sym
**locsymsp
,
7466 const Elf_Internal_Rela
*rel
,
7469 unsigned long r_symndx
;
7471 struct elf_link_hash_entry
*h
;
7472 Elf_Internal_Sym
*sym
;
7476 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7477 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7480 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7482 || ppc64_elf_section_data (sec
) == NULL
7483 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7486 /* Look inside a TOC section too. */
7489 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7490 off
= h
->root
.u
.def
.value
;
7493 off
= sym
->st_value
;
7494 off
+= rel
->r_addend
;
7495 BFD_ASSERT (off
% 8 == 0);
7496 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7497 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7498 if (toc_symndx
!= NULL
)
7499 *toc_symndx
= r_symndx
;
7500 if (toc_addend
!= NULL
)
7501 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7502 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7504 if ((h
== NULL
|| is_static_defined (h
))
7505 && (next_r
== -1 || next_r
== -2))
7510 /* Find (or create) an entry in the tocsave hash table. */
7512 static struct tocsave_entry
*
7513 tocsave_find (struct ppc_link_hash_table
*htab
,
7514 enum insert_option insert
,
7515 Elf_Internal_Sym
**local_syms
,
7516 const Elf_Internal_Rela
*irela
,
7519 unsigned long r_indx
;
7520 struct elf_link_hash_entry
*h
;
7521 Elf_Internal_Sym
*sym
;
7522 struct tocsave_entry ent
, *p
;
7524 struct tocsave_entry
**slot
;
7526 r_indx
= ELF64_R_SYM (irela
->r_info
);
7527 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7529 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7532 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7537 ent
.offset
= h
->root
.u
.def
.value
;
7539 ent
.offset
= sym
->st_value
;
7540 ent
.offset
+= irela
->r_addend
;
7542 hash
= tocsave_htab_hash (&ent
);
7543 slot
= ((struct tocsave_entry
**)
7544 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7550 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7559 /* Adjust all global syms defined in opd sections. In gcc generated
7560 code for the old ABI, these will already have been done. */
7563 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7565 struct ppc_link_hash_entry
*eh
;
7567 struct _opd_sec_data
*opd
;
7569 if (h
->root
.type
== bfd_link_hash_indirect
)
7572 if (h
->root
.type
!= bfd_link_hash_defined
7573 && h
->root
.type
!= bfd_link_hash_defweak
)
7576 eh
= (struct ppc_link_hash_entry
*) h
;
7577 if (eh
->adjust_done
)
7580 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7581 opd
= get_opd_info (sym_sec
);
7582 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7584 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7587 /* This entry has been deleted. */
7588 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7591 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7592 if (discarded_section (dsec
))
7594 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7598 eh
->elf
.root
.u
.def
.value
= 0;
7599 eh
->elf
.root
.u
.def
.section
= dsec
;
7602 eh
->elf
.root
.u
.def
.value
+= adjust
;
7603 eh
->adjust_done
= 1;
7608 /* Handles decrementing dynamic reloc counts for the reloc specified by
7609 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7610 have already been determined. */
7613 dec_dynrel_count (bfd_vma r_info
,
7615 struct bfd_link_info
*info
,
7616 Elf_Internal_Sym
**local_syms
,
7617 struct elf_link_hash_entry
*h
,
7618 Elf_Internal_Sym
*sym
)
7620 enum elf_ppc64_reloc_type r_type
;
7621 asection
*sym_sec
= NULL
;
7623 /* Can this reloc be dynamic? This switch, and later tests here
7624 should be kept in sync with the code in check_relocs. */
7625 r_type
= ELF64_R_TYPE (r_info
);
7631 case R_PPC64_TPREL16
:
7632 case R_PPC64_TPREL16_LO
:
7633 case R_PPC64_TPREL16_HI
:
7634 case R_PPC64_TPREL16_HA
:
7635 case R_PPC64_TPREL16_DS
:
7636 case R_PPC64_TPREL16_LO_DS
:
7637 case R_PPC64_TPREL16_HIGH
:
7638 case R_PPC64_TPREL16_HIGHA
:
7639 case R_PPC64_TPREL16_HIGHER
:
7640 case R_PPC64_TPREL16_HIGHERA
:
7641 case R_PPC64_TPREL16_HIGHEST
:
7642 case R_PPC64_TPREL16_HIGHESTA
:
7643 case R_PPC64_TPREL64
:
7644 case R_PPC64_DTPMOD64
:
7645 case R_PPC64_DTPREL64
:
7646 case R_PPC64_ADDR64
:
7650 case R_PPC64_ADDR14
:
7651 case R_PPC64_ADDR14_BRNTAKEN
:
7652 case R_PPC64_ADDR14_BRTAKEN
:
7653 case R_PPC64_ADDR16
:
7654 case R_PPC64_ADDR16_DS
:
7655 case R_PPC64_ADDR16_HA
:
7656 case R_PPC64_ADDR16_HI
:
7657 case R_PPC64_ADDR16_HIGH
:
7658 case R_PPC64_ADDR16_HIGHA
:
7659 case R_PPC64_ADDR16_HIGHER
:
7660 case R_PPC64_ADDR16_HIGHERA
:
7661 case R_PPC64_ADDR16_HIGHEST
:
7662 case R_PPC64_ADDR16_HIGHESTA
:
7663 case R_PPC64_ADDR16_LO
:
7664 case R_PPC64_ADDR16_LO_DS
:
7665 case R_PPC64_ADDR24
:
7666 case R_PPC64_ADDR32
:
7667 case R_PPC64_UADDR16
:
7668 case R_PPC64_UADDR32
:
7669 case R_PPC64_UADDR64
:
7674 if (local_syms
!= NULL
)
7676 unsigned long r_symndx
;
7677 bfd
*ibfd
= sec
->owner
;
7679 r_symndx
= ELF64_R_SYM (r_info
);
7680 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7684 if ((bfd_link_pic (info
)
7685 && (must_be_dyn_reloc (info
, r_type
)
7687 && (!SYMBOLIC_BIND (info
, h
)
7688 || h
->root
.type
== bfd_link_hash_defweak
7689 || !h
->def_regular
))))
7690 || (ELIMINATE_COPY_RELOCS
7691 && !bfd_link_pic (info
)
7693 && (h
->root
.type
== bfd_link_hash_defweak
7694 || !h
->def_regular
)))
7701 struct elf_dyn_relocs
*p
;
7702 struct elf_dyn_relocs
**pp
;
7703 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7705 /* elf_gc_sweep may have already removed all dyn relocs associated
7706 with local syms for a given section. Also, symbol flags are
7707 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7708 report a dynreloc miscount. */
7709 if (*pp
== NULL
&& info
->gc_sections
)
7712 while ((p
= *pp
) != NULL
)
7716 if (!must_be_dyn_reloc (info
, r_type
))
7728 struct ppc_dyn_relocs
*p
;
7729 struct ppc_dyn_relocs
**pp
;
7731 bfd_boolean is_ifunc
;
7733 if (local_syms
== NULL
)
7734 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7735 if (sym_sec
== NULL
)
7738 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7739 pp
= (struct ppc_dyn_relocs
**) vpp
;
7741 if (*pp
== NULL
&& info
->gc_sections
)
7744 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7745 while ((p
= *pp
) != NULL
)
7747 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7758 /* xgettext:c-format */
7759 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7761 bfd_set_error (bfd_error_bad_value
);
7765 /* Remove unused Official Procedure Descriptor entries. Currently we
7766 only remove those associated with functions in discarded link-once
7767 sections, or weakly defined functions that have been overridden. It
7768 would be possible to remove many more entries for statically linked
7772 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7775 bfd_boolean some_edited
= FALSE
;
7776 asection
*need_pad
= NULL
;
7777 struct ppc_link_hash_table
*htab
;
7779 htab
= ppc_hash_table (info
);
7783 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7786 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7787 Elf_Internal_Shdr
*symtab_hdr
;
7788 Elf_Internal_Sym
*local_syms
;
7789 struct _opd_sec_data
*opd
;
7790 bfd_boolean need_edit
, add_aux_fields
, broken
;
7791 bfd_size_type cnt_16b
= 0;
7793 if (!is_ppc64_elf (ibfd
))
7796 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7797 if (sec
== NULL
|| sec
->size
== 0)
7800 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7803 if (sec
->output_section
== bfd_abs_section_ptr
)
7806 /* Look through the section relocs. */
7807 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7811 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7813 /* Read the relocations. */
7814 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7816 if (relstart
== NULL
)
7819 /* First run through the relocs to check they are sane, and to
7820 determine whether we need to edit this opd section. */
7824 relend
= relstart
+ sec
->reloc_count
;
7825 for (rel
= relstart
; rel
< relend
; )
7827 enum elf_ppc64_reloc_type r_type
;
7828 unsigned long r_symndx
;
7830 struct elf_link_hash_entry
*h
;
7831 Elf_Internal_Sym
*sym
;
7834 /* .opd contains an array of 16 or 24 byte entries. We're
7835 only interested in the reloc pointing to a function entry
7837 offset
= rel
->r_offset
;
7838 if (rel
+ 1 == relend
7839 || rel
[1].r_offset
!= offset
+ 8)
7841 /* If someone messes with .opd alignment then after a
7842 "ld -r" we might have padding in the middle of .opd.
7843 Also, there's nothing to prevent someone putting
7844 something silly in .opd with the assembler. No .opd
7845 optimization for them! */
7848 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7853 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7854 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7857 /* xgettext:c-format */
7858 (_("%B: unexpected reloc type %u in .opd section"),
7864 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7865 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7869 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7871 const char *sym_name
;
7873 sym_name
= h
->root
.root
.string
;
7875 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7879 /* xgettext:c-format */
7880 (_("%B: undefined sym `%s' in .opd section"),
7886 /* opd entries are always for functions defined in the
7887 current input bfd. If the symbol isn't defined in the
7888 input bfd, then we won't be using the function in this
7889 bfd; It must be defined in a linkonce section in another
7890 bfd, or is weak. It's also possible that we are
7891 discarding the function due to a linker script /DISCARD/,
7892 which we test for via the output_section. */
7893 if (sym_sec
->owner
!= ibfd
7894 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7898 if (rel
+ 1 == relend
7899 || (rel
+ 2 < relend
7900 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7905 if (sec
->size
== offset
+ 24)
7910 if (sec
->size
== offset
+ 16)
7917 else if (rel
+ 1 < relend
7918 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7919 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7921 if (rel
[0].r_offset
== offset
+ 16)
7923 else if (rel
[0].r_offset
!= offset
+ 24)
7930 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7932 if (!broken
&& (need_edit
|| add_aux_fields
))
7934 Elf_Internal_Rela
*write_rel
;
7935 Elf_Internal_Shdr
*rel_hdr
;
7936 bfd_byte
*rptr
, *wptr
;
7937 bfd_byte
*new_contents
;
7940 new_contents
= NULL
;
7941 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7942 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7943 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7944 if (opd
->adjust
== NULL
)
7947 /* This seems a waste of time as input .opd sections are all
7948 zeros as generated by gcc, but I suppose there's no reason
7949 this will always be so. We might start putting something in
7950 the third word of .opd entries. */
7951 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7954 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7959 if (local_syms
!= NULL
7960 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7962 if (elf_section_data (sec
)->relocs
!= relstart
)
7966 sec
->contents
= loc
;
7967 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7970 elf_section_data (sec
)->relocs
= relstart
;
7972 new_contents
= sec
->contents
;
7975 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7976 if (new_contents
== NULL
)
7980 wptr
= new_contents
;
7981 rptr
= sec
->contents
;
7982 write_rel
= relstart
;
7983 for (rel
= relstart
; rel
< relend
; )
7985 unsigned long r_symndx
;
7987 struct elf_link_hash_entry
*h
;
7988 struct ppc_link_hash_entry
*fdh
= NULL
;
7989 Elf_Internal_Sym
*sym
;
7991 Elf_Internal_Rela
*next_rel
;
7994 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7995 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8000 if (next_rel
+ 1 == relend
8001 || (next_rel
+ 2 < relend
8002 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8005 /* See if the .opd entry is full 24 byte or
8006 16 byte (with fd_aux entry overlapped with next
8009 if (next_rel
== relend
)
8011 if (sec
->size
== rel
->r_offset
+ 16)
8014 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8018 && h
->root
.root
.string
[0] == '.')
8020 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8023 fdh
= ppc_follow_link (fdh
);
8024 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8025 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8030 skip
= (sym_sec
->owner
!= ibfd
8031 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8034 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8036 /* Arrange for the function descriptor sym
8038 fdh
->elf
.root
.u
.def
.value
= 0;
8039 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8041 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8043 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8048 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8052 if (++rel
== next_rel
)
8055 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8056 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8063 /* We'll be keeping this opd entry. */
8068 /* Redefine the function descriptor symbol to
8069 this location in the opd section. It is
8070 necessary to update the value here rather
8071 than using an array of adjustments as we do
8072 for local symbols, because various places
8073 in the generic ELF code use the value
8074 stored in u.def.value. */
8075 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8076 fdh
->adjust_done
= 1;
8079 /* Local syms are a bit tricky. We could
8080 tweak them as they can be cached, but
8081 we'd need to look through the local syms
8082 for the function descriptor sym which we
8083 don't have at the moment. So keep an
8084 array of adjustments. */
8085 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8086 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8089 memcpy (wptr
, rptr
, opd_ent_size
);
8090 wptr
+= opd_ent_size
;
8091 if (add_aux_fields
&& opd_ent_size
== 16)
8093 memset (wptr
, '\0', 8);
8097 /* We need to adjust any reloc offsets to point to the
8099 for ( ; rel
!= next_rel
; ++rel
)
8101 rel
->r_offset
+= adjust
;
8102 if (write_rel
!= rel
)
8103 memcpy (write_rel
, rel
, sizeof (*rel
));
8108 rptr
+= opd_ent_size
;
8111 sec
->size
= wptr
- new_contents
;
8112 sec
->reloc_count
= write_rel
- relstart
;
8115 free (sec
->contents
);
8116 sec
->contents
= new_contents
;
8119 /* Fudge the header size too, as this is used later in
8120 elf_bfd_final_link if we are emitting relocs. */
8121 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8122 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8125 else if (elf_section_data (sec
)->relocs
!= relstart
)
8128 if (local_syms
!= NULL
8129 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8131 if (!info
->keep_memory
)
8134 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8139 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8141 /* If we are doing a final link and the last .opd entry is just 16 byte
8142 long, add a 8 byte padding after it. */
8143 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8147 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8149 BFD_ASSERT (need_pad
->size
> 0);
8151 p
= bfd_malloc (need_pad
->size
+ 8);
8155 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8156 p
, 0, need_pad
->size
))
8159 need_pad
->contents
= p
;
8160 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8164 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8168 need_pad
->contents
= p
;
8171 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8172 need_pad
->size
+= 8;
8178 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8181 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8183 struct ppc_link_hash_table
*htab
;
8185 htab
= ppc_hash_table (info
);
8189 if (abiversion (info
->output_bfd
) == 1)
8192 if (htab
->params
->no_multi_toc
)
8193 htab
->do_multi_toc
= 0;
8194 else if (!htab
->do_multi_toc
)
8195 htab
->params
->no_multi_toc
= 1;
8197 /* Default to --no-plt-localentry, as this option can cause problems
8198 with symbol interposition. For example, glibc libpthread.so and
8199 libc.so duplicate many pthread symbols, with a fallback
8200 implementation in libc.so. In some cases the fallback does more
8201 work than the pthread implementation. __pthread_condattr_destroy
8202 is one such symbol: the libpthread.so implementation is
8203 localentry:0 while the libc.so implementation is localentry:8.
8204 An app that "cleverly" uses dlopen to only load necessary
8205 libraries at runtime may omit loading libpthread.so when not
8206 running multi-threaded, which then results in the libc.so
8207 fallback symbols being used and ld.so complaining. Now there
8208 are workarounds in ld (see non_zero_localentry) to detect the
8209 pthread situation, but that may not be the only case where
8210 --plt-localentry can cause trouble. */
8211 if (htab
->params
->plt_localentry0
< 0)
8212 htab
->params
->plt_localentry0
= 0;
8213 if (htab
->params
->plt_localentry0
8214 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8215 FALSE
, FALSE
, FALSE
) == NULL
)
8216 info
->callbacks
->einfo
8217 (_("%P: warning: --plt-localentry is especially dangerous without "
8218 "ld.so support to detect ABI violations.\n"));
8220 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8221 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8222 FALSE
, FALSE
, TRUE
));
8223 /* Move dynamic linking info to the function descriptor sym. */
8224 if (htab
->tls_get_addr
!= NULL
)
8225 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8226 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8227 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8228 FALSE
, FALSE
, TRUE
));
8229 if (htab
->params
->tls_get_addr_opt
)
8231 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8233 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8234 FALSE
, FALSE
, TRUE
);
8236 func_desc_adjust (opt
, info
);
8237 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8238 FALSE
, FALSE
, TRUE
);
8240 && (opt_fd
->root
.type
== bfd_link_hash_defined
8241 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8243 /* If glibc supports an optimized __tls_get_addr call stub,
8244 signalled by the presence of __tls_get_addr_opt, and we'll
8245 be calling __tls_get_addr via a plt call stub, then
8246 make __tls_get_addr point to __tls_get_addr_opt. */
8247 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8248 if (htab
->elf
.dynamic_sections_created
8250 && (tga_fd
->type
== STT_FUNC
8251 || tga_fd
->needs_plt
)
8252 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8253 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8255 struct plt_entry
*ent
;
8257 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8258 if (ent
->plt
.refcount
> 0)
8262 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8263 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8264 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8266 if (opt_fd
->dynindx
!= -1)
8268 /* Use __tls_get_addr_opt in dynamic relocations. */
8269 opt_fd
->dynindx
= -1;
8270 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8271 opt_fd
->dynstr_index
);
8272 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8275 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8276 tga
= &htab
->tls_get_addr
->elf
;
8277 if (opt
!= NULL
&& tga
!= NULL
)
8279 tga
->root
.type
= bfd_link_hash_indirect
;
8280 tga
->root
.u
.i
.link
= &opt
->root
;
8281 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8283 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8285 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8287 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8288 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8289 if (htab
->tls_get_addr
!= NULL
)
8291 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8292 htab
->tls_get_addr
->is_func
= 1;
8297 else if (htab
->params
->tls_get_addr_opt
< 0)
8298 htab
->params
->tls_get_addr_opt
= 0;
8300 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8303 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8307 branch_reloc_hash_match (const bfd
*ibfd
,
8308 const Elf_Internal_Rela
*rel
,
8309 const struct ppc_link_hash_entry
*hash1
,
8310 const struct ppc_link_hash_entry
*hash2
)
8312 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8313 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8314 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8316 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8318 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8319 struct elf_link_hash_entry
*h
;
8321 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8322 h
= elf_follow_link (h
);
8323 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8329 /* Run through all the TLS relocs looking for optimization
8330 opportunities. The linker has been hacked (see ppc64elf.em) to do
8331 a preliminary section layout so that we know the TLS segment
8332 offsets. We can't optimize earlier because some optimizations need
8333 to know the tp offset, and we need to optimize before allocating
8334 dynamic relocations. */
8337 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8341 struct ppc_link_hash_table
*htab
;
8342 unsigned char *toc_ref
;
8345 if (!bfd_link_executable (info
))
8348 htab
= ppc_hash_table (info
);
8352 /* Make two passes over the relocs. On the first pass, mark toc
8353 entries involved with tls relocs, and check that tls relocs
8354 involved in setting up a tls_get_addr call are indeed followed by
8355 such a call. If they are not, we can't do any tls optimization.
8356 On the second pass twiddle tls_mask flags to notify
8357 relocate_section that optimization can be done, and adjust got
8358 and plt refcounts. */
8360 for (pass
= 0; pass
< 2; ++pass
)
8361 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8363 Elf_Internal_Sym
*locsyms
= NULL
;
8364 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8366 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8367 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8369 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8370 bfd_boolean found_tls_get_addr_arg
= 0;
8372 /* Read the relocations. */
8373 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8375 if (relstart
== NULL
)
8381 relend
= relstart
+ sec
->reloc_count
;
8382 for (rel
= relstart
; rel
< relend
; rel
++)
8384 enum elf_ppc64_reloc_type r_type
;
8385 unsigned long r_symndx
;
8386 struct elf_link_hash_entry
*h
;
8387 Elf_Internal_Sym
*sym
;
8389 unsigned char *tls_mask
;
8390 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8392 bfd_boolean ok_tprel
, is_local
;
8393 long toc_ref_index
= 0;
8394 int expecting_tls_get_addr
= 0;
8395 bfd_boolean ret
= FALSE
;
8397 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8398 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8402 if (elf_section_data (sec
)->relocs
!= relstart
)
8404 if (toc_ref
!= NULL
)
8407 && (elf_symtab_hdr (ibfd
).contents
8408 != (unsigned char *) locsyms
))
8415 if (h
->root
.type
== bfd_link_hash_defined
8416 || h
->root
.type
== bfd_link_hash_defweak
)
8417 value
= h
->root
.u
.def
.value
;
8418 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8422 found_tls_get_addr_arg
= 0;
8427 /* Symbols referenced by TLS relocs must be of type
8428 STT_TLS. So no need for .opd local sym adjust. */
8429 value
= sym
->st_value
;
8438 && h
->root
.type
== bfd_link_hash_undefweak
)
8440 else if (sym_sec
!= NULL
8441 && sym_sec
->output_section
!= NULL
)
8443 value
+= sym_sec
->output_offset
;
8444 value
+= sym_sec
->output_section
->vma
;
8445 value
-= htab
->elf
.tls_sec
->vma
;
8446 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8447 < (bfd_vma
) 1 << 32);
8451 r_type
= ELF64_R_TYPE (rel
->r_info
);
8452 /* If this section has old-style __tls_get_addr calls
8453 without marker relocs, then check that each
8454 __tls_get_addr call reloc is preceded by a reloc
8455 that conceivably belongs to the __tls_get_addr arg
8456 setup insn. If we don't find matching arg setup
8457 relocs, don't do any tls optimization. */
8459 && sec
->has_tls_get_addr_call
8461 && (h
== &htab
->tls_get_addr
->elf
8462 || h
== &htab
->tls_get_addr_fd
->elf
)
8463 && !found_tls_get_addr_arg
8464 && is_branch_reloc (r_type
))
8466 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8467 "TLS optimization disabled\n"),
8468 ibfd
, sec
, rel
->r_offset
);
8473 found_tls_get_addr_arg
= 0;
8476 case R_PPC64_GOT_TLSLD16
:
8477 case R_PPC64_GOT_TLSLD16_LO
:
8478 expecting_tls_get_addr
= 1;
8479 found_tls_get_addr_arg
= 1;
8482 case R_PPC64_GOT_TLSLD16_HI
:
8483 case R_PPC64_GOT_TLSLD16_HA
:
8484 /* These relocs should never be against a symbol
8485 defined in a shared lib. Leave them alone if
8486 that turns out to be the case. */
8493 tls_type
= TLS_TLS
| TLS_LD
;
8496 case R_PPC64_GOT_TLSGD16
:
8497 case R_PPC64_GOT_TLSGD16_LO
:
8498 expecting_tls_get_addr
= 1;
8499 found_tls_get_addr_arg
= 1;
8502 case R_PPC64_GOT_TLSGD16_HI
:
8503 case R_PPC64_GOT_TLSGD16_HA
:
8509 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8511 tls_type
= TLS_TLS
| TLS_GD
;
8514 case R_PPC64_GOT_TPREL16_DS
:
8515 case R_PPC64_GOT_TPREL16_LO_DS
:
8516 case R_PPC64_GOT_TPREL16_HI
:
8517 case R_PPC64_GOT_TPREL16_HA
:
8522 tls_clear
= TLS_TPREL
;
8523 tls_type
= TLS_TLS
| TLS_TPREL
;
8530 found_tls_get_addr_arg
= 1;
8535 case R_PPC64_TOC16_LO
:
8536 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8539 /* Mark this toc entry as referenced by a TLS
8540 code sequence. We can do that now in the
8541 case of R_PPC64_TLS, and after checking for
8542 tls_get_addr for the TOC16 relocs. */
8543 if (toc_ref
== NULL
)
8544 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8545 if (toc_ref
== NULL
)
8549 value
= h
->root
.u
.def
.value
;
8551 value
= sym
->st_value
;
8552 value
+= rel
->r_addend
;
8555 BFD_ASSERT (value
< toc
->size
8556 && toc
->output_offset
% 8 == 0);
8557 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8558 if (r_type
== R_PPC64_TLS
8559 || r_type
== R_PPC64_TLSGD
8560 || r_type
== R_PPC64_TLSLD
)
8562 toc_ref
[toc_ref_index
] = 1;
8566 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8571 expecting_tls_get_addr
= 2;
8574 case R_PPC64_TPREL64
:
8578 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8583 tls_set
= TLS_EXPLICIT
;
8584 tls_clear
= TLS_TPREL
;
8589 case R_PPC64_DTPMOD64
:
8593 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8595 if (rel
+ 1 < relend
8597 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8598 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8602 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8605 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8614 tls_set
= TLS_EXPLICIT
;
8625 if (!expecting_tls_get_addr
8626 || !sec
->has_tls_get_addr_call
)
8629 if (rel
+ 1 < relend
8630 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8632 htab
->tls_get_addr_fd
))
8634 if (expecting_tls_get_addr
== 2)
8636 /* Check for toc tls entries. */
8637 unsigned char *toc_tls
;
8640 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8645 if (toc_tls
!= NULL
)
8647 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8648 found_tls_get_addr_arg
= 1;
8650 toc_ref
[toc_ref_index
] = 1;
8656 if (expecting_tls_get_addr
!= 1)
8659 /* Uh oh, we didn't find the expected call. We
8660 could just mark this symbol to exclude it
8661 from tls optimization but it's safer to skip
8662 the entire optimization. */
8663 /* xgettext:c-format */
8664 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8665 "TLS optimization disabled\n"),
8666 ibfd
, sec
, rel
->r_offset
);
8671 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8673 struct plt_entry
*ent
;
8674 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8677 if (ent
->addend
== 0)
8679 if (ent
->plt
.refcount
> 0)
8681 ent
->plt
.refcount
-= 1;
8682 expecting_tls_get_addr
= 0;
8688 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8690 struct plt_entry
*ent
;
8691 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8694 if (ent
->addend
== 0)
8696 if (ent
->plt
.refcount
> 0)
8697 ent
->plt
.refcount
-= 1;
8705 if ((tls_set
& TLS_EXPLICIT
) == 0)
8707 struct got_entry
*ent
;
8709 /* Adjust got entry for this reloc. */
8713 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8715 for (; ent
!= NULL
; ent
= ent
->next
)
8716 if (ent
->addend
== rel
->r_addend
8717 && ent
->owner
== ibfd
8718 && ent
->tls_type
== tls_type
)
8725 /* We managed to get rid of a got entry. */
8726 if (ent
->got
.refcount
> 0)
8727 ent
->got
.refcount
-= 1;
8732 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8733 we'll lose one or two dyn relocs. */
8734 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8738 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8740 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8746 *tls_mask
|= tls_set
;
8747 *tls_mask
&= ~tls_clear
;
8750 if (elf_section_data (sec
)->relocs
!= relstart
)
8755 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8757 if (!info
->keep_memory
)
8760 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8764 if (toc_ref
!= NULL
)
8766 htab
->do_tls_opt
= 1;
8770 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8771 the values of any global symbols in a toc section that has been
8772 edited. Globals in toc sections should be a rarity, so this function
8773 sets a flag if any are found in toc sections other than the one just
8774 edited, so that further hash table traversals can be avoided. */
8776 struct adjust_toc_info
8779 unsigned long *skip
;
8780 bfd_boolean global_toc_syms
;
8783 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8786 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8788 struct ppc_link_hash_entry
*eh
;
8789 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8792 if (h
->root
.type
!= bfd_link_hash_defined
8793 && h
->root
.type
!= bfd_link_hash_defweak
)
8796 eh
= (struct ppc_link_hash_entry
*) h
;
8797 if (eh
->adjust_done
)
8800 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8802 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8803 i
= toc_inf
->toc
->rawsize
>> 3;
8805 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8807 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8810 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8813 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8814 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8817 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8818 eh
->adjust_done
= 1;
8820 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8821 toc_inf
->global_toc_syms
= TRUE
;
8826 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8827 on a _LO variety toc/got reloc. */
8830 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8832 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8833 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8834 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8835 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8836 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8837 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8838 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8839 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8840 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8841 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8842 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8843 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8844 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8845 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8846 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8847 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8848 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8849 /* Exclude lfqu by testing reloc. If relocs are ever
8850 defined for the reduced D field in psq_lu then those
8851 will need testing too. */
8852 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8853 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8855 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8856 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8857 /* Exclude stfqu. psq_stu as above for psq_lu. */
8858 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8859 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8860 && (insn
& 1) == 0));
8863 /* Examine all relocs referencing .toc sections in order to remove
8864 unused .toc entries. */
8867 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8870 struct adjust_toc_info toc_inf
;
8871 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8873 htab
->do_toc_opt
= 1;
8874 toc_inf
.global_toc_syms
= TRUE
;
8875 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8877 asection
*toc
, *sec
;
8878 Elf_Internal_Shdr
*symtab_hdr
;
8879 Elf_Internal_Sym
*local_syms
;
8880 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8881 unsigned long *skip
, *drop
;
8882 unsigned char *used
;
8883 unsigned char *keep
, last
, some_unused
;
8885 if (!is_ppc64_elf (ibfd
))
8888 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8891 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8892 || discarded_section (toc
))
8897 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8899 /* Look at sections dropped from the final link. */
8902 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8904 if (sec
->reloc_count
== 0
8905 || !discarded_section (sec
)
8906 || get_opd_info (sec
)
8907 || (sec
->flags
& SEC_ALLOC
) == 0
8908 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8911 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8912 if (relstart
== NULL
)
8915 /* Run through the relocs to see which toc entries might be
8917 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8919 enum elf_ppc64_reloc_type r_type
;
8920 unsigned long r_symndx
;
8922 struct elf_link_hash_entry
*h
;
8923 Elf_Internal_Sym
*sym
;
8926 r_type
= ELF64_R_TYPE (rel
->r_info
);
8933 case R_PPC64_TOC16_LO
:
8934 case R_PPC64_TOC16_HI
:
8935 case R_PPC64_TOC16_HA
:
8936 case R_PPC64_TOC16_DS
:
8937 case R_PPC64_TOC16_LO_DS
:
8941 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8942 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8950 val
= h
->root
.u
.def
.value
;
8952 val
= sym
->st_value
;
8953 val
+= rel
->r_addend
;
8955 if (val
>= toc
->size
)
8958 /* Anything in the toc ought to be aligned to 8 bytes.
8959 If not, don't mark as unused. */
8965 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8970 skip
[val
>> 3] = ref_from_discarded
;
8973 if (elf_section_data (sec
)->relocs
!= relstart
)
8977 /* For largetoc loads of address constants, we can convert
8978 . addis rx,2,addr@got@ha
8979 . ld ry,addr@got@l(rx)
8981 . addis rx,2,addr@toc@ha
8982 . addi ry,rx,addr@toc@l
8983 when addr is within 2G of the toc pointer. This then means
8984 that the word storing "addr" in the toc is no longer needed. */
8986 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8987 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8988 && toc
->reloc_count
!= 0)
8990 /* Read toc relocs. */
8991 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8993 if (toc_relocs
== NULL
)
8996 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8998 enum elf_ppc64_reloc_type r_type
;
8999 unsigned long r_symndx
;
9001 struct elf_link_hash_entry
*h
;
9002 Elf_Internal_Sym
*sym
;
9005 r_type
= ELF64_R_TYPE (rel
->r_info
);
9006 if (r_type
!= R_PPC64_ADDR64
)
9009 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9010 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9015 || sym_sec
->output_section
== NULL
9016 || discarded_section (sym_sec
))
9019 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9024 if (h
->type
== STT_GNU_IFUNC
)
9026 val
= h
->root
.u
.def
.value
;
9030 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9032 val
= sym
->st_value
;
9034 val
+= rel
->r_addend
;
9035 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9037 /* We don't yet know the exact toc pointer value, but we
9038 know it will be somewhere in the toc section. Don't
9039 optimize if the difference from any possible toc
9040 pointer is outside [ff..f80008000, 7fff7fff]. */
9041 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9042 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9045 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9046 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9051 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9056 skip
[rel
->r_offset
>> 3]
9057 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9064 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9068 if (local_syms
!= NULL
9069 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9073 && elf_section_data (sec
)->relocs
!= relstart
)
9075 if (toc_relocs
!= NULL
9076 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9083 /* Now check all kept sections that might reference the toc.
9084 Check the toc itself last. */
9085 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9088 sec
= (sec
== toc
? NULL
9089 : sec
->next
== NULL
? toc
9090 : sec
->next
== toc
&& toc
->next
? toc
->next
9095 if (sec
->reloc_count
== 0
9096 || discarded_section (sec
)
9097 || get_opd_info (sec
)
9098 || (sec
->flags
& SEC_ALLOC
) == 0
9099 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9102 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9104 if (relstart
== NULL
)
9110 /* Mark toc entries referenced as used. */
9114 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9116 enum elf_ppc64_reloc_type r_type
;
9117 unsigned long r_symndx
;
9119 struct elf_link_hash_entry
*h
;
9120 Elf_Internal_Sym
*sym
;
9122 enum {no_check
, check_lo
, check_ha
} insn_check
;
9124 r_type
= ELF64_R_TYPE (rel
->r_info
);
9128 insn_check
= no_check
;
9131 case R_PPC64_GOT_TLSLD16_HA
:
9132 case R_PPC64_GOT_TLSGD16_HA
:
9133 case R_PPC64_GOT_TPREL16_HA
:
9134 case R_PPC64_GOT_DTPREL16_HA
:
9135 case R_PPC64_GOT16_HA
:
9136 case R_PPC64_TOC16_HA
:
9137 insn_check
= check_ha
;
9140 case R_PPC64_GOT_TLSLD16_LO
:
9141 case R_PPC64_GOT_TLSGD16_LO
:
9142 case R_PPC64_GOT_TPREL16_LO_DS
:
9143 case R_PPC64_GOT_DTPREL16_LO_DS
:
9144 case R_PPC64_GOT16_LO
:
9145 case R_PPC64_GOT16_LO_DS
:
9146 case R_PPC64_TOC16_LO
:
9147 case R_PPC64_TOC16_LO_DS
:
9148 insn_check
= check_lo
;
9152 if (insn_check
!= no_check
)
9154 bfd_vma off
= rel
->r_offset
& ~3;
9155 unsigned char buf
[4];
9158 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9163 insn
= bfd_get_32 (ibfd
, buf
);
9164 if (insn_check
== check_lo
9165 ? !ok_lo_toc_insn (insn
, r_type
)
9166 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9167 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9171 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9172 sprintf (str
, "%#08x", insn
);
9173 info
->callbacks
->einfo
9174 /* xgettext:c-format */
9175 (_("%H: toc optimization is not supported for"
9176 " %s instruction.\n"),
9177 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9184 case R_PPC64_TOC16_LO
:
9185 case R_PPC64_TOC16_HI
:
9186 case R_PPC64_TOC16_HA
:
9187 case R_PPC64_TOC16_DS
:
9188 case R_PPC64_TOC16_LO_DS
:
9189 /* In case we're taking addresses of toc entries. */
9190 case R_PPC64_ADDR64
:
9197 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9198 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9209 val
= h
->root
.u
.def
.value
;
9211 val
= sym
->st_value
;
9212 val
+= rel
->r_addend
;
9214 if (val
>= toc
->size
)
9217 if ((skip
[val
>> 3] & can_optimize
) != 0)
9224 case R_PPC64_TOC16_HA
:
9227 case R_PPC64_TOC16_LO_DS
:
9228 off
= rel
->r_offset
;
9229 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9230 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9236 if ((opc
& (0x3f << 2)) == (58u << 2))
9241 /* Wrong sort of reloc, or not a ld. We may
9242 as well clear ref_from_discarded too. */
9249 /* For the toc section, we only mark as used if this
9250 entry itself isn't unused. */
9251 else if ((used
[rel
->r_offset
>> 3]
9252 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9255 /* Do all the relocs again, to catch reference
9264 if (elf_section_data (sec
)->relocs
!= relstart
)
9268 /* Merge the used and skip arrays. Assume that TOC
9269 doublewords not appearing as either used or unused belong
9270 to an entry more than one doubleword in size. */
9271 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9272 drop
< skip
+ (toc
->size
+ 7) / 8;
9277 *drop
&= ~ref_from_discarded
;
9278 if ((*drop
& can_optimize
) != 0)
9282 else if ((*drop
& ref_from_discarded
) != 0)
9285 last
= ref_from_discarded
;
9295 bfd_byte
*contents
, *src
;
9297 Elf_Internal_Sym
*sym
;
9298 bfd_boolean local_toc_syms
= FALSE
;
9300 /* Shuffle the toc contents, and at the same time convert the
9301 skip array from booleans into offsets. */
9302 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9305 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9307 for (src
= contents
, off
= 0, drop
= skip
;
9308 src
< contents
+ toc
->size
;
9311 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9316 memcpy (src
- off
, src
, 8);
9320 toc
->rawsize
= toc
->size
;
9321 toc
->size
= src
- contents
- off
;
9323 /* Adjust addends for relocs against the toc section sym,
9324 and optimize any accesses we can. */
9325 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9327 if (sec
->reloc_count
== 0
9328 || discarded_section (sec
))
9331 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9333 if (relstart
== NULL
)
9336 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9338 enum elf_ppc64_reloc_type r_type
;
9339 unsigned long r_symndx
;
9341 struct elf_link_hash_entry
*h
;
9344 r_type
= ELF64_R_TYPE (rel
->r_info
);
9351 case R_PPC64_TOC16_LO
:
9352 case R_PPC64_TOC16_HI
:
9353 case R_PPC64_TOC16_HA
:
9354 case R_PPC64_TOC16_DS
:
9355 case R_PPC64_TOC16_LO_DS
:
9356 case R_PPC64_ADDR64
:
9360 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9361 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9369 val
= h
->root
.u
.def
.value
;
9372 val
= sym
->st_value
;
9374 local_toc_syms
= TRUE
;
9377 val
+= rel
->r_addend
;
9379 if (val
> toc
->rawsize
)
9381 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9383 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9385 Elf_Internal_Rela
*tocrel
9386 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9387 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9391 case R_PPC64_TOC16_HA
:
9392 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9395 case R_PPC64_TOC16_LO_DS
:
9396 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9400 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9402 info
->callbacks
->einfo
9403 /* xgettext:c-format */
9404 (_("%H: %s references "
9405 "optimized away TOC entry\n"),
9406 ibfd
, sec
, rel
->r_offset
,
9407 ppc64_elf_howto_table
[r_type
]->name
);
9408 bfd_set_error (bfd_error_bad_value
);
9411 rel
->r_addend
= tocrel
->r_addend
;
9412 elf_section_data (sec
)->relocs
= relstart
;
9416 if (h
!= NULL
|| sym
->st_value
!= 0)
9419 rel
->r_addend
-= skip
[val
>> 3];
9420 elf_section_data (sec
)->relocs
= relstart
;
9423 if (elf_section_data (sec
)->relocs
!= relstart
)
9427 /* We shouldn't have local or global symbols defined in the TOC,
9428 but handle them anyway. */
9429 if (local_syms
!= NULL
)
9430 for (sym
= local_syms
;
9431 sym
< local_syms
+ symtab_hdr
->sh_info
;
9433 if (sym
->st_value
!= 0
9434 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9438 if (sym
->st_value
> toc
->rawsize
)
9439 i
= toc
->rawsize
>> 3;
9441 i
= sym
->st_value
>> 3;
9443 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9447 (_("%s defined on removed toc entry"),
9448 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9451 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9452 sym
->st_value
= (bfd_vma
) i
<< 3;
9455 sym
->st_value
-= skip
[i
];
9456 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9459 /* Adjust any global syms defined in this toc input section. */
9460 if (toc_inf
.global_toc_syms
)
9463 toc_inf
.skip
= skip
;
9464 toc_inf
.global_toc_syms
= FALSE
;
9465 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9469 if (toc
->reloc_count
!= 0)
9471 Elf_Internal_Shdr
*rel_hdr
;
9472 Elf_Internal_Rela
*wrel
;
9475 /* Remove unused toc relocs, and adjust those we keep. */
9476 if (toc_relocs
== NULL
)
9477 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9479 if (toc_relocs
== NULL
)
9483 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9484 if ((skip
[rel
->r_offset
>> 3]
9485 & (ref_from_discarded
| can_optimize
)) == 0)
9487 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9488 wrel
->r_info
= rel
->r_info
;
9489 wrel
->r_addend
= rel
->r_addend
;
9492 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9493 &local_syms
, NULL
, NULL
))
9496 elf_section_data (toc
)->relocs
= toc_relocs
;
9497 toc
->reloc_count
= wrel
- toc_relocs
;
9498 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9499 sz
= rel_hdr
->sh_entsize
;
9500 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9503 else if (toc_relocs
!= NULL
9504 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9507 if (local_syms
!= NULL
9508 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9510 if (!info
->keep_memory
)
9513 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9521 /* Return true iff input section I references the TOC using
9522 instructions limited to +/-32k offsets. */
9525 ppc64_elf_has_small_toc_reloc (asection
*i
)
9527 return (is_ppc64_elf (i
->owner
)
9528 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9531 /* Allocate space for one GOT entry. */
9534 allocate_got (struct elf_link_hash_entry
*h
,
9535 struct bfd_link_info
*info
,
9536 struct got_entry
*gent
)
9538 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9539 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9540 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9542 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9543 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9544 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9546 gent
->got
.offset
= got
->size
;
9547 got
->size
+= entsize
;
9549 if (h
->type
== STT_GNU_IFUNC
)
9551 htab
->elf
.irelplt
->size
+= rentsize
;
9552 htab
->got_reli_size
+= rentsize
;
9554 else if (((bfd_link_pic (info
)
9555 && !((gent
->tls_type
& TLS_TPREL
) != 0
9556 && bfd_link_executable (info
)
9557 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9558 || (htab
->elf
.dynamic_sections_created
9560 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9561 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9563 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9564 relgot
->size
+= rentsize
;
9568 /* This function merges got entries in the same toc group. */
9571 merge_got_entries (struct got_entry
**pent
)
9573 struct got_entry
*ent
, *ent2
;
9575 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9576 if (!ent
->is_indirect
)
9577 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9578 if (!ent2
->is_indirect
9579 && ent2
->addend
== ent
->addend
9580 && ent2
->tls_type
== ent
->tls_type
9581 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9583 ent2
->is_indirect
= TRUE
;
9584 ent2
->got
.ent
= ent
;
9588 /* If H is undefined, make it dynamic if that makes sense. */
9591 ensure_undef_dynamic (struct bfd_link_info
*info
,
9592 struct elf_link_hash_entry
*h
)
9594 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9596 if (htab
->dynamic_sections_created
9597 && ((info
->dynamic_undefined_weak
!= 0
9598 && h
->root
.type
== bfd_link_hash_undefweak
)
9599 || h
->root
.type
== bfd_link_hash_undefined
)
9602 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9603 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9607 /* Allocate space in .plt, .got and associated reloc sections for
9611 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9613 struct bfd_link_info
*info
;
9614 struct ppc_link_hash_table
*htab
;
9616 struct ppc_link_hash_entry
*eh
;
9617 struct got_entry
**pgent
, *gent
;
9619 if (h
->root
.type
== bfd_link_hash_indirect
)
9622 info
= (struct bfd_link_info
*) inf
;
9623 htab
= ppc_hash_table (info
);
9627 eh
= (struct ppc_link_hash_entry
*) h
;
9628 /* Run through the TLS GD got entries first if we're changing them
9630 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9631 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9632 if (gent
->got
.refcount
> 0
9633 && (gent
->tls_type
& TLS_GD
) != 0)
9635 /* This was a GD entry that has been converted to TPREL. If
9636 there happens to be a TPREL entry we can use that one. */
9637 struct got_entry
*ent
;
9638 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9639 if (ent
->got
.refcount
> 0
9640 && (ent
->tls_type
& TLS_TPREL
) != 0
9641 && ent
->addend
== gent
->addend
9642 && ent
->owner
== gent
->owner
)
9644 gent
->got
.refcount
= 0;
9648 /* If not, then we'll be using our own TPREL entry. */
9649 if (gent
->got
.refcount
!= 0)
9650 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9653 /* Remove any list entry that won't generate a word in the GOT before
9654 we call merge_got_entries. Otherwise we risk merging to empty
9656 pgent
= &h
->got
.glist
;
9657 while ((gent
= *pgent
) != NULL
)
9658 if (gent
->got
.refcount
> 0)
9660 if ((gent
->tls_type
& TLS_LD
) != 0
9663 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9664 *pgent
= gent
->next
;
9667 pgent
= &gent
->next
;
9670 *pgent
= gent
->next
;
9672 if (!htab
->do_multi_toc
)
9673 merge_got_entries (&h
->got
.glist
);
9675 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9676 if (!gent
->is_indirect
)
9678 /* Make sure this symbol is output as a dynamic symbol. */
9679 if (!ensure_undef_dynamic (info
, h
))
9682 if (!is_ppc64_elf (gent
->owner
))
9685 allocate_got (h
, info
, gent
);
9688 /* If no dynamic sections we can't have dynamic relocs, except for
9689 IFUNCs which are handled even in static executables. */
9690 if (!htab
->elf
.dynamic_sections_created
9691 && h
->type
!= STT_GNU_IFUNC
)
9692 eh
->dyn_relocs
= NULL
;
9694 /* Discard relocs on undefined symbols that must be local. */
9695 else if (h
->root
.type
== bfd_link_hash_undefined
9696 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9697 eh
->dyn_relocs
= NULL
;
9699 /* Also discard relocs on undefined weak syms with non-default
9700 visibility, or when dynamic_undefined_weak says so. */
9701 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9702 eh
->dyn_relocs
= NULL
;
9704 if (eh
->dyn_relocs
!= NULL
)
9706 struct elf_dyn_relocs
*p
, **pp
;
9708 /* In the shared -Bsymbolic case, discard space allocated for
9709 dynamic pc-relative relocs against symbols which turn out to
9710 be defined in regular objects. For the normal shared case,
9711 discard space for relocs that have become local due to symbol
9712 visibility changes. */
9714 if (bfd_link_pic (info
))
9716 /* Relocs that use pc_count are those that appear on a call
9717 insn, or certain REL relocs (see must_be_dyn_reloc) that
9718 can be generated via assembly. We want calls to
9719 protected symbols to resolve directly to the function
9720 rather than going via the plt. If people want function
9721 pointer comparisons to work as expected then they should
9722 avoid writing weird assembly. */
9723 if (SYMBOL_CALLS_LOCAL (info
, h
))
9725 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9727 p
->count
-= p
->pc_count
;
9736 if (eh
->dyn_relocs
!= NULL
)
9738 /* Make sure this symbol is output as a dynamic symbol. */
9739 if (!ensure_undef_dynamic (info
, h
))
9743 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
9745 /* For the non-pic case, discard space for relocs against
9746 symbols which turn out to need copy relocs or are not
9748 if (h
->dynamic_adjusted
9750 && !ELF_COMMON_DEF_P (h
))
9752 /* Make sure this symbol is output as a dynamic symbol. */
9753 if (!ensure_undef_dynamic (info
, h
))
9756 if (h
->dynindx
== -1)
9757 eh
->dyn_relocs
= NULL
;
9760 eh
->dyn_relocs
= NULL
;
9763 /* Finally, allocate space. */
9764 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9766 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9767 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9768 sreloc
= htab
->elf
.irelplt
;
9769 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9773 if ((htab
->elf
.dynamic_sections_created
9774 && h
->dynindx
!= -1)
9775 || h
->type
== STT_GNU_IFUNC
)
9777 struct plt_entry
*pent
;
9778 bfd_boolean doneone
= FALSE
;
9779 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9780 if (pent
->plt
.refcount
> 0)
9782 if (!htab
->elf
.dynamic_sections_created
9783 || h
->dynindx
== -1)
9786 pent
->plt
.offset
= s
->size
;
9787 s
->size
+= PLT_ENTRY_SIZE (htab
);
9788 s
= htab
->elf
.irelplt
;
9792 /* If this is the first .plt entry, make room for the special
9796 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9798 pent
->plt
.offset
= s
->size
;
9800 /* Make room for this entry. */
9801 s
->size
+= PLT_ENTRY_SIZE (htab
);
9803 /* Make room for the .glink code. */
9806 s
->size
+= GLINK_PLTRESOLVE_SIZE (htab
);
9809 /* We need bigger stubs past index 32767. */
9810 if (s
->size
>= GLINK_PLTRESOLVE_SIZE (htab
) + 32768*2*4)
9817 /* We also need to make an entry in the .rela.plt section. */
9818 s
= htab
->elf
.srelplt
;
9820 s
->size
+= sizeof (Elf64_External_Rela
);
9824 pent
->plt
.offset
= (bfd_vma
) -1;
9827 h
->plt
.plist
= NULL
;
9833 h
->plt
.plist
= NULL
;
9840 #define PPC_LO(v) ((v) & 0xffff)
9841 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9842 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9844 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9845 to set up space for global entry stubs. These are put in glink,
9846 after the branch table. */
9849 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9851 struct bfd_link_info
*info
;
9852 struct ppc_link_hash_table
*htab
;
9853 struct plt_entry
*pent
;
9856 if (h
->root
.type
== bfd_link_hash_indirect
)
9859 if (!h
->pointer_equality_needed
)
9866 htab
= ppc_hash_table (info
);
9870 s
= htab
->global_entry
;
9871 plt
= htab
->elf
.splt
;
9872 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9873 if (pent
->plt
.offset
!= (bfd_vma
) -1
9874 && pent
->addend
== 0)
9876 /* For ELFv2, if this symbol is not defined in a regular file
9877 and we are not generating a shared library or pie, then we
9878 need to define the symbol in the executable on a call stub.
9879 This is to avoid text relocations. */
9880 bfd_vma off
, stub_align
, stub_off
, stub_size
;
9881 unsigned int align_power
;
9885 if (htab
->params
->plt_stub_align
>= 0)
9886 align_power
= htab
->params
->plt_stub_align
;
9888 align_power
= -htab
->params
->plt_stub_align
;
9889 /* Setting section alignment is delayed until we know it is
9890 non-empty. Otherwise the .text output section will be
9891 aligned at least to plt_stub_align even when no global
9892 entry stubs are needed. */
9893 if (s
->alignment_power
< align_power
)
9894 s
->alignment_power
= align_power
;
9895 stub_align
= (bfd_vma
) 1 << align_power
;
9896 if (htab
->params
->plt_stub_align
>= 0
9897 || ((((stub_off
+ stub_size
- 1) & -stub_align
)
9898 - (stub_off
& -stub_align
))
9899 > ((stub_size
- 1) & -stub_align
)))
9900 stub_off
= (stub_off
+ stub_align
- 1) & -stub_align
;
9901 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
9902 off
-= stub_off
+ s
->output_offset
+ s
->output_section
->vma
;
9903 /* Note that for --plt-stub-align negative we have a possible
9904 dependency between stub offset and size. Break that
9905 dependency by assuming the max stub size when calculating
9907 if (PPC_HA (off
) == 0)
9909 h
->root
.type
= bfd_link_hash_defined
;
9910 h
->root
.u
.def
.section
= s
;
9911 h
->root
.u
.def
.value
= stub_off
;
9912 s
->size
= stub_off
+ stub_size
;
9918 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9919 read-only sections. */
9922 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
9926 if (h
->root
.type
== bfd_link_hash_indirect
)
9929 sec
= readonly_dynrelocs (h
);
9932 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9934 info
->flags
|= DF_TEXTREL
;
9935 info
->callbacks
->minfo
9936 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
9937 sec
->owner
, h
->root
.root
.string
, sec
);
9939 /* Not an error, just cut short the traversal. */
9945 /* Set the sizes of the dynamic sections. */
9948 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9949 struct bfd_link_info
*info
)
9951 struct ppc_link_hash_table
*htab
;
9956 struct got_entry
*first_tlsld
;
9958 htab
= ppc_hash_table (info
);
9962 dynobj
= htab
->elf
.dynobj
;
9966 if (htab
->elf
.dynamic_sections_created
)
9968 /* Set the contents of the .interp section to the interpreter. */
9969 if (bfd_link_executable (info
) && !info
->nointerp
)
9971 s
= bfd_get_linker_section (dynobj
, ".interp");
9974 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9975 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9979 /* Set up .got offsets for local syms, and space for local dynamic
9981 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9983 struct got_entry
**lgot_ents
;
9984 struct got_entry
**end_lgot_ents
;
9985 struct plt_entry
**local_plt
;
9986 struct plt_entry
**end_local_plt
;
9987 unsigned char *lgot_masks
;
9988 bfd_size_type locsymcount
;
9989 Elf_Internal_Shdr
*symtab_hdr
;
9991 if (!is_ppc64_elf (ibfd
))
9994 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9996 struct ppc_dyn_relocs
*p
;
9998 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10000 if (!bfd_is_abs_section (p
->sec
)
10001 && bfd_is_abs_section (p
->sec
->output_section
))
10003 /* Input section has been discarded, either because
10004 it is a copy of a linkonce section or due to
10005 linker script /DISCARD/, so we'll be discarding
10008 else if (p
->count
!= 0)
10010 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10012 srel
= htab
->elf
.irelplt
;
10013 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10014 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10015 info
->flags
|= DF_TEXTREL
;
10020 lgot_ents
= elf_local_got_ents (ibfd
);
10024 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10025 locsymcount
= symtab_hdr
->sh_info
;
10026 end_lgot_ents
= lgot_ents
+ locsymcount
;
10027 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10028 end_local_plt
= local_plt
+ locsymcount
;
10029 lgot_masks
= (unsigned char *) end_local_plt
;
10030 s
= ppc64_elf_tdata (ibfd
)->got
;
10031 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10033 struct got_entry
**pent
, *ent
;
10036 while ((ent
= *pent
) != NULL
)
10037 if (ent
->got
.refcount
> 0)
10039 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10041 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10046 unsigned int ent_size
= 8;
10047 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10049 ent
->got
.offset
= s
->size
;
10050 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10055 s
->size
+= ent_size
;
10056 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10058 htab
->elf
.irelplt
->size
+= rel_size
;
10059 htab
->got_reli_size
+= rel_size
;
10061 else if (bfd_link_pic (info
)
10062 && !((ent
->tls_type
& TLS_TPREL
) != 0
10063 && bfd_link_executable (info
)))
10065 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10066 srel
->size
+= rel_size
;
10075 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10076 for (; local_plt
< end_local_plt
; ++local_plt
)
10078 struct plt_entry
*ent
;
10080 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10081 if (ent
->plt
.refcount
> 0)
10083 s
= htab
->elf
.iplt
;
10084 ent
->plt
.offset
= s
->size
;
10085 s
->size
+= PLT_ENTRY_SIZE (htab
);
10087 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10090 ent
->plt
.offset
= (bfd_vma
) -1;
10094 /* Allocate global sym .plt and .got entries, and space for global
10095 sym dynamic relocs. */
10096 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10098 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10099 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10101 first_tlsld
= NULL
;
10102 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10104 struct got_entry
*ent
;
10106 if (!is_ppc64_elf (ibfd
))
10109 ent
= ppc64_tlsld_got (ibfd
);
10110 if (ent
->got
.refcount
> 0)
10112 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10114 ent
->is_indirect
= TRUE
;
10115 ent
->got
.ent
= first_tlsld
;
10119 if (first_tlsld
== NULL
)
10121 s
= ppc64_elf_tdata (ibfd
)->got
;
10122 ent
->got
.offset
= s
->size
;
10125 if (bfd_link_pic (info
))
10127 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10128 srel
->size
+= sizeof (Elf64_External_Rela
);
10133 ent
->got
.offset
= (bfd_vma
) -1;
10136 /* We now have determined the sizes of the various dynamic sections.
10137 Allocate memory for them. */
10139 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10141 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10144 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10145 /* These haven't been allocated yet; don't strip. */
10147 else if (s
== htab
->elf
.sgot
10148 || s
== htab
->elf
.splt
10149 || s
== htab
->elf
.iplt
10150 || s
== htab
->glink
10151 || s
== htab
->global_entry
10152 || s
== htab
->elf
.sdynbss
10153 || s
== htab
->elf
.sdynrelro
)
10155 /* Strip this section if we don't need it; see the
10158 else if (s
== htab
->glink_eh_frame
)
10160 if (!bfd_is_abs_section (s
->output_section
))
10161 /* Not sized yet. */
10164 else if (CONST_STRNEQ (s
->name
, ".rela"))
10168 if (s
!= htab
->elf
.srelplt
)
10171 /* We use the reloc_count field as a counter if we need
10172 to copy relocs into the output file. */
10173 s
->reloc_count
= 0;
10178 /* It's not one of our sections, so don't allocate space. */
10184 /* If we don't need this section, strip it from the
10185 output file. This is mostly to handle .rela.bss and
10186 .rela.plt. We must create both sections in
10187 create_dynamic_sections, because they must be created
10188 before the linker maps input sections to output
10189 sections. The linker does that before
10190 adjust_dynamic_symbol is called, and it is that
10191 function which decides whether anything needs to go
10192 into these sections. */
10193 s
->flags
|= SEC_EXCLUDE
;
10197 if (bfd_is_abs_section (s
->output_section
))
10198 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10201 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10204 /* Allocate memory for the section contents. We use bfd_zalloc
10205 here in case unused entries are not reclaimed before the
10206 section's contents are written out. This should not happen,
10207 but this way if it does we get a R_PPC64_NONE reloc in .rela
10208 sections instead of garbage.
10209 We also rely on the section contents being zero when writing
10210 the GOT and .dynrelro. */
10211 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10212 if (s
->contents
== NULL
)
10216 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10218 if (!is_ppc64_elf (ibfd
))
10221 s
= ppc64_elf_tdata (ibfd
)->got
;
10222 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10225 s
->flags
|= SEC_EXCLUDE
;
10228 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10229 if (s
->contents
== NULL
)
10233 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10237 s
->flags
|= SEC_EXCLUDE
;
10240 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10241 if (s
->contents
== NULL
)
10244 s
->reloc_count
= 0;
10249 if (htab
->elf
.dynamic_sections_created
)
10251 bfd_boolean tls_opt
;
10253 /* Add some entries to the .dynamic section. We fill in the
10254 values later, in ppc64_elf_finish_dynamic_sections, but we
10255 must add the entries now so that we get the correct size for
10256 the .dynamic section. The DT_DEBUG entry is filled in by the
10257 dynamic linker and used by the debugger. */
10258 #define add_dynamic_entry(TAG, VAL) \
10259 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10261 if (bfd_link_executable (info
))
10263 if (!add_dynamic_entry (DT_DEBUG
, 0))
10267 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10269 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10270 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10271 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10272 || !add_dynamic_entry (DT_JMPREL
, 0)
10273 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10277 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10279 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10280 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10284 tls_opt
= (htab
->params
->tls_get_addr_opt
10285 && htab
->tls_get_addr_fd
!= NULL
10286 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10287 if (tls_opt
|| !htab
->opd_abi
)
10289 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10295 if (!add_dynamic_entry (DT_RELA
, 0)
10296 || !add_dynamic_entry (DT_RELASZ
, 0)
10297 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10300 /* If any dynamic relocs apply to a read-only section,
10301 then we need a DT_TEXTREL entry. */
10302 if ((info
->flags
& DF_TEXTREL
) == 0)
10303 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10305 if ((info
->flags
& DF_TEXTREL
) != 0)
10307 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10312 #undef add_dynamic_entry
10317 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10320 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10322 if (h
->plt
.plist
!= NULL
10324 && !h
->pointer_equality_needed
)
10327 return _bfd_elf_hash_symbol (h
);
10330 /* Determine the type of stub needed, if any, for a call. */
10332 static inline enum ppc_stub_type
10333 ppc_type_of_stub (asection
*input_sec
,
10334 const Elf_Internal_Rela
*rel
,
10335 struct ppc_link_hash_entry
**hash
,
10336 struct plt_entry
**plt_ent
,
10337 bfd_vma destination
,
10338 unsigned long local_off
)
10340 struct ppc_link_hash_entry
*h
= *hash
;
10342 bfd_vma branch_offset
;
10343 bfd_vma max_branch_offset
;
10344 enum elf_ppc64_reloc_type r_type
;
10348 struct plt_entry
*ent
;
10349 struct ppc_link_hash_entry
*fdh
= h
;
10351 && h
->oh
->is_func_descriptor
)
10353 fdh
= ppc_follow_link (h
->oh
);
10357 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10358 if (ent
->addend
== rel
->r_addend
10359 && ent
->plt
.offset
!= (bfd_vma
) -1)
10362 return ppc_stub_plt_call
;
10365 /* Here, we know we don't have a plt entry. If we don't have a
10366 either a defined function descriptor or a defined entry symbol
10367 in a regular object file, then it is pointless trying to make
10368 any other type of stub. */
10369 if (!is_static_defined (&fdh
->elf
)
10370 && !is_static_defined (&h
->elf
))
10371 return ppc_stub_none
;
10373 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10375 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10376 struct plt_entry
**local_plt
= (struct plt_entry
**)
10377 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10378 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10380 if (local_plt
[r_symndx
] != NULL
)
10382 struct plt_entry
*ent
;
10384 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10385 if (ent
->addend
== rel
->r_addend
10386 && ent
->plt
.offset
!= (bfd_vma
) -1)
10389 return ppc_stub_plt_call
;
10394 /* Determine where the call point is. */
10395 location
= (input_sec
->output_offset
10396 + input_sec
->output_section
->vma
10399 branch_offset
= destination
- location
;
10400 r_type
= ELF64_R_TYPE (rel
->r_info
);
10402 /* Determine if a long branch stub is needed. */
10403 max_branch_offset
= 1 << 25;
10404 if (r_type
!= R_PPC64_REL24
)
10405 max_branch_offset
= 1 << 15;
10407 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10408 /* We need a stub. Figure out whether a long_branch or plt_branch
10409 is needed later. */
10410 return ppc_stub_long_branch
;
10412 return ppc_stub_none
;
10415 /* With power7 weakly ordered memory model, it is possible for ld.so
10416 to update a plt entry in one thread and have another thread see a
10417 stale zero toc entry. To avoid this we need some sort of acquire
10418 barrier in the call stub. One solution is to make the load of the
10419 toc word seem to appear to depend on the load of the function entry
10420 word. Another solution is to test for r2 being zero, and branch to
10421 the appropriate glink entry if so.
10423 . fake dep barrier compare
10424 . ld 12,xxx(2) ld 12,xxx(2)
10425 . mtctr 12 mtctr 12
10426 . xor 11,12,12 ld 2,xxx+8(2)
10427 . add 2,2,11 cmpldi 2,0
10428 . ld 2,xxx+8(2) bnectr+
10429 . bctr b <glink_entry>
10431 The solution involving the compare turns out to be faster, so
10432 that's what we use unless the branch won't reach. */
10434 #define ALWAYS_USE_FAKE_DEP 0
10435 #define ALWAYS_EMIT_R2SAVE 0
10437 static inline unsigned int
10438 plt_stub_size (struct ppc_link_hash_table
*htab
,
10439 struct ppc_stub_hash_entry
*stub_entry
,
10442 unsigned size
= 12;
10444 if (ALWAYS_EMIT_R2SAVE
10445 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10447 if (PPC_HA (off
) != 0)
10452 if (htab
->params
->plt_static_chain
)
10454 if (htab
->params
->plt_thread_safe
10455 && htab
->elf
.dynamic_sections_created
10456 && stub_entry
->h
!= NULL
10457 && stub_entry
->h
->elf
.dynindx
!= -1)
10459 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10462 if (stub_entry
->h
!= NULL
10463 && (stub_entry
->h
== htab
->tls_get_addr_fd
10464 || stub_entry
->h
== htab
->tls_get_addr
)
10465 && htab
->params
->tls_get_addr_opt
)
10468 if (ALWAYS_EMIT_R2SAVE
10469 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10475 /* Depending on the sign of plt_stub_align:
10476 If positive, return the padding to align to a 2**plt_stub_align
10478 If negative, if this stub would cross fewer 2**plt_stub_align
10479 boundaries if we align, then return the padding needed to do so. */
10481 static inline unsigned int
10482 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10483 struct ppc_stub_hash_entry
*stub_entry
,
10487 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10488 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10490 if (htab
->params
->plt_stub_align
>= 0)
10492 stub_align
= 1 << htab
->params
->plt_stub_align
;
10493 if ((stub_off
& (stub_align
- 1)) != 0)
10494 return stub_align
- (stub_off
& (stub_align
- 1));
10498 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10499 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10500 > ((stub_size
- 1) & -stub_align
))
10501 return stub_align
- (stub_off
& (stub_align
- 1));
10505 /* Build a .plt call stub. */
10507 static inline bfd_byte
*
10508 build_plt_stub (struct ppc_link_hash_table
*htab
,
10509 struct ppc_stub_hash_entry
*stub_entry
,
10510 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10512 bfd
*obfd
= htab
->params
->stub_bfd
;
10513 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10514 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10515 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10516 && htab
->elf
.dynamic_sections_created
10517 && stub_entry
->h
!= NULL
10518 && stub_entry
->h
->elf
.dynindx
!= -1);
10519 bfd_boolean use_fake_dep
= plt_thread_safe
;
10520 bfd_vma cmp_branch_off
= 0;
10522 if (!ALWAYS_USE_FAKE_DEP
10525 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10526 || stub_entry
->h
== htab
->tls_get_addr
)
10527 && htab
->params
->tls_get_addr_opt
))
10529 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10530 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10531 / PLT_ENTRY_SIZE (htab
));
10532 bfd_vma glinkoff
= GLINK_PLTRESOLVE_SIZE (htab
) + pltindex
* 8;
10535 if (pltindex
> 32768)
10536 glinkoff
+= (pltindex
- 32768) * 4;
10538 + htab
->glink
->output_offset
10539 + htab
->glink
->output_section
->vma
);
10540 from
= (p
- stub_entry
->group
->stub_sec
->contents
10541 + 4 * (ALWAYS_EMIT_R2SAVE
10542 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10543 + 4 * (PPC_HA (offset
) != 0)
10544 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10545 != PPC_HA (offset
))
10546 + 4 * (plt_static_chain
!= 0)
10548 + stub_entry
->group
->stub_sec
->output_offset
10549 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10550 cmp_branch_off
= to
- from
;
10551 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10554 if (PPC_HA (offset
) != 0)
10558 if (ALWAYS_EMIT_R2SAVE
10559 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10560 r
[0].r_offset
+= 4;
10561 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10562 r
[1].r_offset
= r
[0].r_offset
+ 4;
10563 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10564 r
[1].r_addend
= r
[0].r_addend
;
10567 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10569 r
[2].r_offset
= r
[1].r_offset
+ 4;
10570 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10571 r
[2].r_addend
= r
[0].r_addend
;
10575 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10576 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10577 r
[2].r_addend
= r
[0].r_addend
+ 8;
10578 if (plt_static_chain
)
10580 r
[3].r_offset
= r
[2].r_offset
+ 4;
10581 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10582 r
[3].r_addend
= r
[0].r_addend
+ 16;
10587 if (ALWAYS_EMIT_R2SAVE
10588 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10589 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10592 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10593 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10597 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10598 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10601 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10603 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10606 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10611 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10612 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10614 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10615 if (plt_static_chain
)
10616 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10623 if (ALWAYS_EMIT_R2SAVE
10624 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10625 r
[0].r_offset
+= 4;
10626 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10629 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10631 r
[1].r_offset
= r
[0].r_offset
+ 4;
10632 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10633 r
[1].r_addend
= r
[0].r_addend
;
10637 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10638 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10639 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10640 if (plt_static_chain
)
10642 r
[2].r_offset
= r
[1].r_offset
+ 4;
10643 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10644 r
[2].r_addend
= r
[0].r_addend
+ 8;
10649 if (ALWAYS_EMIT_R2SAVE
10650 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10651 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10652 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10654 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10656 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10659 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10664 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10665 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10667 if (plt_static_chain
)
10668 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10669 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10672 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10674 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10675 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10676 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10679 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10683 /* Build a special .plt call stub for __tls_get_addr. */
10685 #define LD_R11_0R3 0xe9630000
10686 #define LD_R12_0R3 0xe9830000
10687 #define MR_R0_R3 0x7c601b78
10688 #define CMPDI_R11_0 0x2c2b0000
10689 #define ADD_R3_R12_R13 0x7c6c6a14
10690 #define BEQLR 0x4d820020
10691 #define MR_R3_R0 0x7c030378
10692 #define STD_R11_0R1 0xf9610000
10693 #define BCTRL 0x4e800421
10694 #define LD_R11_0R1 0xe9610000
10695 #define MTLR_R11 0x7d6803a6
10697 static inline bfd_byte
*
10698 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10699 struct ppc_stub_hash_entry
*stub_entry
,
10700 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10702 bfd
*obfd
= htab
->params
->stub_bfd
;
10704 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10705 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10706 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10707 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10708 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10709 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10710 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10712 r
[0].r_offset
+= 7 * 4;
10713 if (!ALWAYS_EMIT_R2SAVE
10714 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10715 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10717 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10718 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10721 r
[0].r_offset
+= 2 * 4;
10722 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10723 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10725 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10726 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10727 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10728 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10733 static Elf_Internal_Rela
*
10734 get_relocs (asection
*sec
, int count
)
10736 Elf_Internal_Rela
*relocs
;
10737 struct bfd_elf_section_data
*elfsec_data
;
10739 elfsec_data
= elf_section_data (sec
);
10740 relocs
= elfsec_data
->relocs
;
10741 if (relocs
== NULL
)
10743 bfd_size_type relsize
;
10744 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10745 relocs
= bfd_alloc (sec
->owner
, relsize
);
10746 if (relocs
== NULL
)
10748 elfsec_data
->relocs
= relocs
;
10749 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10750 sizeof (Elf_Internal_Shdr
));
10751 if (elfsec_data
->rela
.hdr
== NULL
)
10753 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10754 * sizeof (Elf64_External_Rela
));
10755 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10756 sec
->reloc_count
= 0;
10758 relocs
+= sec
->reloc_count
;
10759 sec
->reloc_count
+= count
;
10764 get_r2off (struct bfd_link_info
*info
,
10765 struct ppc_stub_hash_entry
*stub_entry
)
10767 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10768 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10772 /* Support linking -R objects. Get the toc pointer from the
10775 if (!htab
->opd_abi
)
10777 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10778 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10780 if (strcmp (opd
->name
, ".opd") != 0
10781 || opd
->reloc_count
!= 0)
10783 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10784 stub_entry
->h
->elf
.root
.root
.string
);
10785 bfd_set_error (bfd_error_bad_value
);
10786 return (bfd_vma
) -1;
10788 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10789 return (bfd_vma
) -1;
10790 r2off
= bfd_get_64 (opd
->owner
, buf
);
10791 r2off
-= elf_gp (info
->output_bfd
);
10793 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10798 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10800 struct ppc_stub_hash_entry
*stub_entry
;
10801 struct ppc_branch_hash_entry
*br_entry
;
10802 struct bfd_link_info
*info
;
10803 struct ppc_link_hash_table
*htab
;
10807 Elf_Internal_Rela
*r
;
10810 /* Massage our args to the form they really have. */
10811 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10814 htab
= ppc_hash_table (info
);
10818 /* Make a note of the offset within the stubs for this entry. */
10819 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10820 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10822 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10823 switch (stub_entry
->stub_type
)
10825 case ppc_stub_long_branch
:
10826 case ppc_stub_long_branch_r2off
:
10827 /* Branches are relative. This is where we are going to. */
10828 dest
= (stub_entry
->target_value
10829 + stub_entry
->target_section
->output_offset
10830 + stub_entry
->target_section
->output_section
->vma
);
10831 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10834 /* And this is where we are coming from. */
10835 off
-= (stub_entry
->stub_offset
10836 + stub_entry
->group
->stub_sec
->output_offset
10837 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10840 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10842 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10844 if (r2off
== (bfd_vma
) -1)
10846 htab
->stub_error
= TRUE
;
10849 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
10851 if (PPC_HA (r2off
) != 0)
10853 bfd_put_32 (htab
->params
->stub_bfd
,
10854 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
10857 if (PPC_LO (r2off
) != 0)
10859 bfd_put_32 (htab
->params
->stub_bfd
,
10860 ADDI_R2_R2
| PPC_LO (r2off
), p
);
10865 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), p
);
10868 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10870 info
->callbacks
->einfo
10871 (_("%P: long branch stub `%s' offset overflow\n"),
10872 stub_entry
->root
.string
);
10873 htab
->stub_error
= TRUE
;
10877 if (info
->emitrelocations
)
10879 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10882 r
->r_offset
= p
- 4 - stub_entry
->group
->stub_sec
->contents
;
10883 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10884 r
->r_addend
= dest
;
10885 if (stub_entry
->h
!= NULL
)
10887 struct elf_link_hash_entry
**hashes
;
10888 unsigned long symndx
;
10889 struct ppc_link_hash_entry
*h
;
10891 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10892 if (hashes
== NULL
)
10894 bfd_size_type hsize
;
10896 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10897 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10898 if (hashes
== NULL
)
10900 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10901 htab
->stub_globals
= 1;
10903 symndx
= htab
->stub_globals
++;
10905 hashes
[symndx
] = &h
->elf
;
10906 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10907 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10908 h
= ppc_follow_link (h
->oh
);
10909 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10910 /* H is an opd symbol. The addend must be zero. */
10914 off
= (h
->elf
.root
.u
.def
.value
10915 + h
->elf
.root
.u
.def
.section
->output_offset
10916 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10917 r
->r_addend
-= off
;
10923 case ppc_stub_plt_branch
:
10924 case ppc_stub_plt_branch_r2off
:
10925 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10926 stub_entry
->root
.string
+ 9,
10928 if (br_entry
== NULL
)
10930 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10931 stub_entry
->root
.string
);
10932 htab
->stub_error
= TRUE
;
10936 dest
= (stub_entry
->target_value
10937 + stub_entry
->target_section
->output_offset
10938 + stub_entry
->target_section
->output_section
->vma
);
10939 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10940 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10942 bfd_put_64 (htab
->brlt
->owner
, dest
,
10943 htab
->brlt
->contents
+ br_entry
->offset
);
10945 if (br_entry
->iter
== htab
->stub_iteration
)
10947 br_entry
->iter
= 0;
10949 if (htab
->relbrlt
!= NULL
)
10951 /* Create a reloc for the branch lookup table entry. */
10952 Elf_Internal_Rela rela
;
10955 rela
.r_offset
= (br_entry
->offset
10956 + htab
->brlt
->output_offset
10957 + htab
->brlt
->output_section
->vma
);
10958 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10959 rela
.r_addend
= dest
;
10961 rl
= htab
->relbrlt
->contents
;
10962 rl
+= (htab
->relbrlt
->reloc_count
++
10963 * sizeof (Elf64_External_Rela
));
10964 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10966 else if (info
->emitrelocations
)
10968 r
= get_relocs (htab
->brlt
, 1);
10971 /* brlt, being SEC_LINKER_CREATED does not go through the
10972 normal reloc processing. Symbols and offsets are not
10973 translated from input file to output file form, so
10974 set up the offset per the output file. */
10975 r
->r_offset
= (br_entry
->offset
10976 + htab
->brlt
->output_offset
10977 + htab
->brlt
->output_section
->vma
);
10978 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10979 r
->r_addend
= dest
;
10983 dest
= (br_entry
->offset
10984 + htab
->brlt
->output_offset
10985 + htab
->brlt
->output_section
->vma
);
10988 - elf_gp (info
->output_bfd
)
10989 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
10991 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10993 info
->callbacks
->einfo
10994 (_("%P: linkage table error against `%T'\n"),
10995 stub_entry
->root
.string
);
10996 bfd_set_error (bfd_error_bad_value
);
10997 htab
->stub_error
= TRUE
;
11001 if (info
->emitrelocations
)
11003 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11006 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11007 if (bfd_big_endian (info
->output_bfd
))
11008 r
[0].r_offset
+= 2;
11009 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11010 r
[0].r_offset
+= 4;
11011 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11012 r
[0].r_addend
= dest
;
11013 if (PPC_HA (off
) != 0)
11015 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11016 r
[1].r_offset
= r
[0].r_offset
+ 4;
11017 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11018 r
[1].r_addend
= r
[0].r_addend
;
11023 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11025 if (PPC_HA (off
) != 0)
11027 bfd_put_32 (htab
->params
->stub_bfd
,
11028 ADDIS_R12_R2
| PPC_HA (off
), p
);
11030 bfd_put_32 (htab
->params
->stub_bfd
,
11031 LD_R12_0R12
| PPC_LO (off
), p
);
11034 bfd_put_32 (htab
->params
->stub_bfd
,
11035 LD_R12_0R2
| PPC_LO (off
), p
);
11039 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11041 if (r2off
== (bfd_vma
) -1)
11043 htab
->stub_error
= TRUE
;
11047 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
11049 if (PPC_HA (off
) != 0)
11051 bfd_put_32 (htab
->params
->stub_bfd
,
11052 ADDIS_R12_R2
| PPC_HA (off
), p
);
11054 bfd_put_32 (htab
->params
->stub_bfd
,
11055 LD_R12_0R12
| PPC_LO (off
), p
);
11058 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), p
);
11060 if (PPC_HA (r2off
) != 0)
11063 bfd_put_32 (htab
->params
->stub_bfd
,
11064 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
11066 if (PPC_LO (r2off
) != 0)
11069 bfd_put_32 (htab
->params
->stub_bfd
,
11070 ADDI_R2_R2
| PPC_LO (r2off
), p
);
11074 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, p
);
11076 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, p
);
11080 case ppc_stub_plt_call
:
11081 case ppc_stub_plt_call_r2save
:
11082 if (stub_entry
->h
!= NULL
11083 && stub_entry
->h
->is_func_descriptor
11084 && stub_entry
->h
->oh
!= NULL
)
11086 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11088 /* If the old-ABI "dot-symbol" is undefined make it weak so
11089 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11090 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11091 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11092 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11093 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11096 /* Now build the stub. */
11097 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11098 if (dest
>= (bfd_vma
) -2)
11101 plt
= htab
->elf
.splt
;
11102 if (!htab
->elf
.dynamic_sections_created
11103 || stub_entry
->h
== NULL
11104 || stub_entry
->h
->elf
.dynindx
== -1)
11105 plt
= htab
->elf
.iplt
;
11107 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11109 if (stub_entry
->h
== NULL
11110 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11112 Elf_Internal_Rela rela
;
11115 rela
.r_offset
= dest
;
11117 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11119 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11120 rela
.r_addend
= (stub_entry
->target_value
11121 + stub_entry
->target_section
->output_offset
11122 + stub_entry
->target_section
->output_section
->vma
);
11124 rl
= (htab
->elf
.irelplt
->contents
11125 + (htab
->elf
.irelplt
->reloc_count
++
11126 * sizeof (Elf64_External_Rela
)));
11127 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11128 stub_entry
->plt_ent
->plt
.offset
|= 1;
11129 htab
->local_ifunc_resolver
= 1;
11133 - elf_gp (info
->output_bfd
)
11134 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11136 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11138 info
->callbacks
->einfo
11139 /* xgettext:c-format */
11140 (_("%P: linkage table error against `%T'\n"),
11141 stub_entry
->h
!= NULL
11142 ? stub_entry
->h
->elf
.root
.root
.string
11144 bfd_set_error (bfd_error_bad_value
);
11145 htab
->stub_error
= TRUE
;
11149 if (htab
->params
->plt_stub_align
!= 0)
11151 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11153 stub_entry
->group
->stub_sec
->size
+= pad
;
11154 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11159 if (info
->emitrelocations
)
11161 r
= get_relocs (stub_entry
->group
->stub_sec
,
11162 ((PPC_HA (off
) != 0)
11164 ? 2 + (htab
->params
->plt_static_chain
11165 && PPC_HA (off
+ 16) == PPC_HA (off
))
11169 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11170 if (bfd_big_endian (info
->output_bfd
))
11171 r
[0].r_offset
+= 2;
11172 r
[0].r_addend
= dest
;
11174 if (stub_entry
->h
!= NULL
11175 && (stub_entry
->h
== htab
->tls_get_addr_fd
11176 || stub_entry
->h
== htab
->tls_get_addr
)
11177 && htab
->params
->tls_get_addr_opt
)
11178 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11180 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11183 case ppc_stub_save_res
:
11191 stub_entry
->group
->stub_sec
->size
+= p
- loc
;
11193 if (htab
->params
->emit_stub_syms
)
11195 struct elf_link_hash_entry
*h
;
11198 const char *const stub_str
[] = { "long_branch",
11199 "long_branch_r2off",
11201 "plt_branch_r2off",
11205 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11206 len2
= strlen (stub_entry
->root
.string
);
11207 name
= bfd_malloc (len1
+ len2
+ 2);
11210 memcpy (name
, stub_entry
->root
.string
, 9);
11211 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11212 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11213 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11216 if (h
->root
.type
== bfd_link_hash_new
)
11218 h
->root
.type
= bfd_link_hash_defined
;
11219 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11220 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11221 h
->ref_regular
= 1;
11222 h
->def_regular
= 1;
11223 h
->ref_regular_nonweak
= 1;
11224 h
->forced_local
= 1;
11226 h
->root
.linker_def
= 1;
11233 /* As above, but don't actually build the stub. Just bump offset so
11234 we know stub section sizes, and select plt_branch stubs where
11235 long_branch stubs won't do. */
11238 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11240 struct ppc_stub_hash_entry
*stub_entry
;
11241 struct bfd_link_info
*info
;
11242 struct ppc_link_hash_table
*htab
;
11246 /* Massage our args to the form they really have. */
11247 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11250 htab
= ppc_hash_table (info
);
11254 if (stub_entry
->h
!= NULL
11255 && stub_entry
->h
->save_res
11256 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11257 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11259 /* Don't make stubs to out-of-line register save/restore
11260 functions. Instead, emit copies of the functions. */
11261 stub_entry
->group
->needs_save_res
= 1;
11262 stub_entry
->stub_type
= ppc_stub_save_res
;
11266 if (stub_entry
->stub_type
== ppc_stub_plt_call
11267 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11270 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11271 if (off
>= (bfd_vma
) -2)
11273 plt
= htab
->elf
.splt
;
11274 if (!htab
->elf
.dynamic_sections_created
11275 || stub_entry
->h
== NULL
11276 || stub_entry
->h
->elf
.dynindx
== -1)
11277 plt
= htab
->elf
.iplt
;
11278 off
+= (plt
->output_offset
11279 + plt
->output_section
->vma
11280 - elf_gp (info
->output_bfd
)
11281 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11283 size
= plt_stub_size (htab
, stub_entry
, off
);
11284 if (stub_entry
->h
!= NULL
11285 && (stub_entry
->h
== htab
->tls_get_addr_fd
11286 || stub_entry
->h
== htab
->tls_get_addr
)
11287 && htab
->params
->tls_get_addr_opt
11288 && (ALWAYS_EMIT_R2SAVE
11289 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11290 stub_entry
->group
->tls_get_addr_opt_bctrl
11291 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11293 if (htab
->params
->plt_stub_align
)
11294 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11295 if (info
->emitrelocations
)
11297 stub_entry
->group
->stub_sec
->reloc_count
11298 += ((PPC_HA (off
) != 0)
11300 ? 2 + (htab
->params
->plt_static_chain
11301 && PPC_HA (off
+ 16) == PPC_HA (off
))
11303 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11308 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11311 bfd_vma local_off
= 0;
11313 off
= (stub_entry
->target_value
11314 + stub_entry
->target_section
->output_offset
11315 + stub_entry
->target_section
->output_section
->vma
);
11316 off
-= (stub_entry
->group
->stub_sec
->size
11317 + stub_entry
->group
->stub_sec
->output_offset
11318 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11320 /* Reset the stub type from the plt variant in case we now
11321 can reach with a shorter stub. */
11322 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11323 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11326 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11328 r2off
= get_r2off (info
, stub_entry
);
11329 if (r2off
== (bfd_vma
) -1)
11331 htab
->stub_error
= TRUE
;
11335 if (PPC_HA (r2off
) != 0)
11337 if (PPC_LO (r2off
) != 0)
11342 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11344 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11345 Do the same for -R objects without function descriptors. */
11346 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11347 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11349 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11351 struct ppc_branch_hash_entry
*br_entry
;
11353 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11354 stub_entry
->root
.string
+ 9,
11356 if (br_entry
== NULL
)
11358 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11359 stub_entry
->root
.string
);
11360 htab
->stub_error
= TRUE
;
11364 if (br_entry
->iter
!= htab
->stub_iteration
)
11366 br_entry
->iter
= htab
->stub_iteration
;
11367 br_entry
->offset
= htab
->brlt
->size
;
11368 htab
->brlt
->size
+= 8;
11370 if (htab
->relbrlt
!= NULL
)
11371 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11372 else if (info
->emitrelocations
)
11374 htab
->brlt
->reloc_count
+= 1;
11375 htab
->brlt
->flags
|= SEC_RELOC
;
11379 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11380 off
= (br_entry
->offset
11381 + htab
->brlt
->output_offset
11382 + htab
->brlt
->output_section
->vma
11383 - elf_gp (info
->output_bfd
)
11384 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11386 if (info
->emitrelocations
)
11388 stub_entry
->group
->stub_sec
->reloc_count
11389 += 1 + (PPC_HA (off
) != 0);
11390 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11393 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11396 if (PPC_HA (off
) != 0)
11402 if (PPC_HA (off
) != 0)
11405 if (PPC_HA (r2off
) != 0)
11407 if (PPC_LO (r2off
) != 0)
11411 else if (info
->emitrelocations
)
11413 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11414 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11418 stub_entry
->group
->stub_sec
->size
+= size
;
11422 /* Set up various things so that we can make a list of input sections
11423 for each output section included in the link. Returns -1 on error,
11424 0 when no stubs will be needed, and 1 on success. */
11427 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11431 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11436 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11437 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11438 htab
->sec_info
= bfd_zmalloc (amt
);
11439 if (htab
->sec_info
== NULL
)
11442 /* Set toc_off for com, und, abs and ind sections. */
11443 for (id
= 0; id
< 3; id
++)
11444 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11449 /* Set up for first pass at multitoc partitioning. */
11452 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11454 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11456 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11457 htab
->toc_bfd
= NULL
;
11458 htab
->toc_first_sec
= NULL
;
11461 /* The linker repeatedly calls this function for each TOC input section
11462 and linker generated GOT section. Group input bfds such that the toc
11463 within a group is less than 64k in size. */
11466 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11468 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11469 bfd_vma addr
, off
, limit
;
11474 if (!htab
->second_toc_pass
)
11476 /* Keep track of the first .toc or .got section for this input bfd. */
11477 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11481 htab
->toc_bfd
= isec
->owner
;
11482 htab
->toc_first_sec
= isec
;
11485 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11486 off
= addr
- htab
->toc_curr
;
11487 limit
= 0x80008000;
11488 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11490 if (off
+ isec
->size
> limit
)
11492 addr
= (htab
->toc_first_sec
->output_offset
11493 + htab
->toc_first_sec
->output_section
->vma
);
11494 htab
->toc_curr
= addr
;
11495 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11498 /* toc_curr is the base address of this toc group. Set elf_gp
11499 for the input section to be the offset relative to the
11500 output toc base plus 0x8000. Making the input elf_gp an
11501 offset allows us to move the toc as a whole without
11502 recalculating input elf_gp. */
11503 off
= htab
->toc_curr
- elf_gp (info
->output_bfd
);
11504 off
+= TOC_BASE_OFF
;
11506 /* Die if someone uses a linker script that doesn't keep input
11507 file .toc and .got together. */
11509 && elf_gp (isec
->owner
) != 0
11510 && elf_gp (isec
->owner
) != off
)
11513 elf_gp (isec
->owner
) = off
;
11517 /* During the second pass toc_first_sec points to the start of
11518 a toc group, and toc_curr is used to track the old elf_gp.
11519 We use toc_bfd to ensure we only look at each bfd once. */
11520 if (htab
->toc_bfd
== isec
->owner
)
11522 htab
->toc_bfd
= isec
->owner
;
11524 if (htab
->toc_first_sec
== NULL
11525 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11527 htab
->toc_curr
= elf_gp (isec
->owner
);
11528 htab
->toc_first_sec
= isec
;
11530 addr
= (htab
->toc_first_sec
->output_offset
11531 + htab
->toc_first_sec
->output_section
->vma
);
11532 off
= addr
- elf_gp (info
->output_bfd
) + TOC_BASE_OFF
;
11533 elf_gp (isec
->owner
) = off
;
11538 /* Called via elf_link_hash_traverse to merge GOT entries for global
11542 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11544 if (h
->root
.type
== bfd_link_hash_indirect
)
11547 merge_got_entries (&h
->got
.glist
);
11552 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11556 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11558 struct got_entry
*gent
;
11560 if (h
->root
.type
== bfd_link_hash_indirect
)
11563 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11564 if (!gent
->is_indirect
)
11565 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11569 /* Called on the first multitoc pass after the last call to
11570 ppc64_elf_next_toc_section. This function removes duplicate GOT
11574 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11576 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11577 struct bfd
*ibfd
, *ibfd2
;
11578 bfd_boolean done_something
;
11580 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11582 if (!htab
->do_multi_toc
)
11585 /* Merge global sym got entries within a toc group. */
11586 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11588 /* And tlsld_got. */
11589 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11591 struct got_entry
*ent
, *ent2
;
11593 if (!is_ppc64_elf (ibfd
))
11596 ent
= ppc64_tlsld_got (ibfd
);
11597 if (!ent
->is_indirect
11598 && ent
->got
.offset
!= (bfd_vma
) -1)
11600 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11602 if (!is_ppc64_elf (ibfd2
))
11605 ent2
= ppc64_tlsld_got (ibfd2
);
11606 if (!ent2
->is_indirect
11607 && ent2
->got
.offset
!= (bfd_vma
) -1
11608 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11610 ent2
->is_indirect
= TRUE
;
11611 ent2
->got
.ent
= ent
;
11617 /* Zap sizes of got sections. */
11618 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11619 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11620 htab
->got_reli_size
= 0;
11622 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11624 asection
*got
, *relgot
;
11626 if (!is_ppc64_elf (ibfd
))
11629 got
= ppc64_elf_tdata (ibfd
)->got
;
11632 got
->rawsize
= got
->size
;
11634 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11635 relgot
->rawsize
= relgot
->size
;
11640 /* Now reallocate the got, local syms first. We don't need to
11641 allocate section contents again since we never increase size. */
11642 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11644 struct got_entry
**lgot_ents
;
11645 struct got_entry
**end_lgot_ents
;
11646 struct plt_entry
**local_plt
;
11647 struct plt_entry
**end_local_plt
;
11648 unsigned char *lgot_masks
;
11649 bfd_size_type locsymcount
;
11650 Elf_Internal_Shdr
*symtab_hdr
;
11653 if (!is_ppc64_elf (ibfd
))
11656 lgot_ents
= elf_local_got_ents (ibfd
);
11660 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11661 locsymcount
= symtab_hdr
->sh_info
;
11662 end_lgot_ents
= lgot_ents
+ locsymcount
;
11663 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11664 end_local_plt
= local_plt
+ locsymcount
;
11665 lgot_masks
= (unsigned char *) end_local_plt
;
11666 s
= ppc64_elf_tdata (ibfd
)->got
;
11667 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11669 struct got_entry
*ent
;
11671 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11673 unsigned int ent_size
= 8;
11674 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11676 ent
->got
.offset
= s
->size
;
11677 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11682 s
->size
+= ent_size
;
11683 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11685 htab
->elf
.irelplt
->size
+= rel_size
;
11686 htab
->got_reli_size
+= rel_size
;
11688 else if (bfd_link_pic (info
))
11690 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11691 srel
->size
+= rel_size
;
11697 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11699 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11701 struct got_entry
*ent
;
11703 if (!is_ppc64_elf (ibfd
))
11706 ent
= ppc64_tlsld_got (ibfd
);
11707 if (!ent
->is_indirect
11708 && ent
->got
.offset
!= (bfd_vma
) -1)
11710 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11711 ent
->got
.offset
= s
->size
;
11713 if (bfd_link_pic (info
))
11715 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11716 srel
->size
+= sizeof (Elf64_External_Rela
);
11721 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11722 if (!done_something
)
11723 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11727 if (!is_ppc64_elf (ibfd
))
11730 got
= ppc64_elf_tdata (ibfd
)->got
;
11733 done_something
= got
->rawsize
!= got
->size
;
11734 if (done_something
)
11739 if (done_something
)
11740 (*htab
->params
->layout_sections_again
) ();
11742 /* Set up for second pass over toc sections to recalculate elf_gp
11743 on input sections. */
11744 htab
->toc_bfd
= NULL
;
11745 htab
->toc_first_sec
= NULL
;
11746 htab
->second_toc_pass
= TRUE
;
11747 return done_something
;
11750 /* Called after second pass of multitoc partitioning. */
11753 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11755 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11757 /* After the second pass, toc_curr tracks the TOC offset used
11758 for code sections below in ppc64_elf_next_input_section. */
11759 htab
->toc_curr
= TOC_BASE_OFF
;
11762 /* No toc references were found in ISEC. If the code in ISEC makes no
11763 calls, then there's no need to use toc adjusting stubs when branching
11764 into ISEC. Actually, indirect calls from ISEC are OK as they will
11765 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11766 needed, and 2 if a cyclical call-graph was found but no other reason
11767 for a stub was detected. If called from the top level, a return of
11768 2 means the same as a return of 0. */
11771 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11775 /* Mark this section as checked. */
11776 isec
->call_check_done
= 1;
11778 /* We know none of our code bearing sections will need toc stubs. */
11779 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11782 if (isec
->size
== 0)
11785 if (isec
->output_section
== NULL
)
11789 if (isec
->reloc_count
!= 0)
11791 Elf_Internal_Rela
*relstart
, *rel
;
11792 Elf_Internal_Sym
*local_syms
;
11793 struct ppc_link_hash_table
*htab
;
11795 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11796 info
->keep_memory
);
11797 if (relstart
== NULL
)
11800 /* Look for branches to outside of this section. */
11802 htab
= ppc_hash_table (info
);
11806 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11808 enum elf_ppc64_reloc_type r_type
;
11809 unsigned long r_symndx
;
11810 struct elf_link_hash_entry
*h
;
11811 struct ppc_link_hash_entry
*eh
;
11812 Elf_Internal_Sym
*sym
;
11814 struct _opd_sec_data
*opd
;
11818 r_type
= ELF64_R_TYPE (rel
->r_info
);
11819 if (r_type
!= R_PPC64_REL24
11820 && r_type
!= R_PPC64_REL14
11821 && r_type
!= R_PPC64_REL14_BRTAKEN
11822 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11825 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11826 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11833 /* Calls to dynamic lib functions go through a plt call stub
11835 eh
= (struct ppc_link_hash_entry
*) h
;
11837 && (eh
->elf
.plt
.plist
!= NULL
11839 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11845 if (sym_sec
== NULL
)
11846 /* Ignore other undefined symbols. */
11849 /* Assume branches to other sections not included in the
11850 link need stubs too, to cover -R and absolute syms. */
11851 if (sym_sec
->output_section
== NULL
)
11858 sym_value
= sym
->st_value
;
11861 if (h
->root
.type
!= bfd_link_hash_defined
11862 && h
->root
.type
!= bfd_link_hash_defweak
)
11864 sym_value
= h
->root
.u
.def
.value
;
11866 sym_value
+= rel
->r_addend
;
11868 /* If this branch reloc uses an opd sym, find the code section. */
11869 opd
= get_opd_info (sym_sec
);
11872 if (h
== NULL
&& opd
->adjust
!= NULL
)
11876 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11878 /* Assume deleted functions won't ever be called. */
11880 sym_value
+= adjust
;
11883 dest
= opd_entry_value (sym_sec
, sym_value
,
11884 &sym_sec
, NULL
, FALSE
);
11885 if (dest
== (bfd_vma
) -1)
11890 + sym_sec
->output_offset
11891 + sym_sec
->output_section
->vma
);
11893 /* Ignore branch to self. */
11894 if (sym_sec
== isec
)
11897 /* If the called function uses the toc, we need a stub. */
11898 if (sym_sec
->has_toc_reloc
11899 || sym_sec
->makes_toc_func_call
)
11905 /* Assume any branch that needs a long branch stub might in fact
11906 need a plt_branch stub. A plt_branch stub uses r2. */
11907 else if (dest
- (isec
->output_offset
11908 + isec
->output_section
->vma
11909 + rel
->r_offset
) + (1 << 25)
11910 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11918 /* If calling back to a section in the process of being
11919 tested, we can't say for sure that no toc adjusting stubs
11920 are needed, so don't return zero. */
11921 else if (sym_sec
->call_check_in_progress
)
11924 /* Branches to another section that itself doesn't have any TOC
11925 references are OK. Recursively call ourselves to check. */
11926 else if (!sym_sec
->call_check_done
)
11930 /* Mark current section as indeterminate, so that other
11931 sections that call back to current won't be marked as
11933 isec
->call_check_in_progress
= 1;
11934 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11935 isec
->call_check_in_progress
= 0;
11946 if (local_syms
!= NULL
11947 && (elf_symtab_hdr (isec
->owner
).contents
11948 != (unsigned char *) local_syms
))
11950 if (elf_section_data (isec
)->relocs
!= relstart
)
11955 && isec
->map_head
.s
!= NULL
11956 && (strcmp (isec
->output_section
->name
, ".init") == 0
11957 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11959 if (isec
->map_head
.s
->has_toc_reloc
11960 || isec
->map_head
.s
->makes_toc_func_call
)
11962 else if (!isec
->map_head
.s
->call_check_done
)
11965 isec
->call_check_in_progress
= 1;
11966 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11967 isec
->call_check_in_progress
= 0;
11974 isec
->makes_toc_func_call
= 1;
11979 /* The linker repeatedly calls this function for each input section,
11980 in the order that input sections are linked into output sections.
11981 Build lists of input sections to determine groupings between which
11982 we may insert linker stubs. */
11985 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11987 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11992 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11993 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
11995 /* This happens to make the list in reverse order,
11996 which is what we want. */
11997 htab
->sec_info
[isec
->id
].u
.list
11998 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
11999 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12002 if (htab
->multi_toc_needed
)
12004 /* Analyse sections that aren't already flagged as needing a
12005 valid toc pointer. Exclude .fixup for the linux kernel.
12006 .fixup contains branches, but only back to the function that
12007 hit an exception. */
12008 if (!(isec
->has_toc_reloc
12009 || (isec
->flags
& SEC_CODE
) == 0
12010 || strcmp (isec
->name
, ".fixup") == 0
12011 || isec
->call_check_done
))
12013 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12016 /* Make all sections use the TOC assigned for this object file.
12017 This will be wrong for pasted sections; We fix that in
12018 check_pasted_section(). */
12019 if (elf_gp (isec
->owner
) != 0)
12020 htab
->toc_curr
= elf_gp (isec
->owner
);
12023 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12027 /* Check that all .init and .fini sections use the same toc, if they
12028 have toc relocs. */
12031 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12033 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12037 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12038 bfd_vma toc_off
= 0;
12041 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12042 if (i
->has_toc_reloc
)
12045 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12046 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12051 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12052 if (i
->makes_toc_func_call
)
12054 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12058 /* Make sure the whole pasted function uses the same toc offset. */
12060 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12061 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12067 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12069 return (check_pasted_section (info
, ".init")
12070 & check_pasted_section (info
, ".fini"));
12073 /* See whether we can group stub sections together. Grouping stub
12074 sections may result in fewer stubs. More importantly, we need to
12075 put all .init* and .fini* stubs at the beginning of the .init or
12076 .fini output sections respectively, because glibc splits the
12077 _init and _fini functions into multiple parts. Putting a stub in
12078 the middle of a function is not a good idea. */
12081 group_sections (struct bfd_link_info
*info
,
12082 bfd_size_type stub_group_size
,
12083 bfd_boolean stubs_always_before_branch
)
12085 struct ppc_link_hash_table
*htab
;
12087 bfd_boolean suppress_size_errors
;
12089 htab
= ppc_hash_table (info
);
12093 suppress_size_errors
= FALSE
;
12094 if (stub_group_size
== 1)
12096 /* Default values. */
12097 if (stubs_always_before_branch
)
12098 stub_group_size
= 0x1e00000;
12100 stub_group_size
= 0x1c00000;
12101 suppress_size_errors
= TRUE
;
12104 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12108 if (osec
->id
>= htab
->sec_info_arr_size
)
12111 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12112 while (tail
!= NULL
)
12116 bfd_size_type total
;
12117 bfd_boolean big_sec
;
12119 struct map_stub
*group
;
12120 bfd_size_type group_size
;
12123 total
= tail
->size
;
12124 group_size
= (ppc64_elf_section_data (tail
) != NULL
12125 && ppc64_elf_section_data (tail
)->has_14bit_branch
12126 ? stub_group_size
>> 10 : stub_group_size
);
12128 big_sec
= total
> group_size
;
12129 if (big_sec
&& !suppress_size_errors
)
12130 /* xgettext:c-format */
12131 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12132 tail
->owner
, tail
);
12133 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12135 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12136 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12137 < (ppc64_elf_section_data (prev
) != NULL
12138 && ppc64_elf_section_data (prev
)->has_14bit_branch
12139 ? (group_size
= stub_group_size
>> 10) : group_size
))
12140 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12143 /* OK, the size from the start of CURR to the end is less
12144 than group_size and thus can be handled by one stub
12145 section. (or the tail section is itself larger than
12146 group_size, in which case we may be toast.) We should
12147 really be keeping track of the total size of stubs added
12148 here, as stubs contribute to the final output section
12149 size. That's a little tricky, and this way will only
12150 break if stubs added make the total size more than 2^25,
12151 ie. for the default stub_group_size, if stubs total more
12152 than 2097152 bytes, or nearly 75000 plt call stubs. */
12153 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12156 group
->link_sec
= curr
;
12157 group
->stub_sec
= NULL
;
12158 group
->needs_save_res
= 0;
12159 group
->tls_get_addr_opt_bctrl
= -1u;
12160 group
->next
= htab
->group
;
12161 htab
->group
= group
;
12164 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12165 /* Set up this stub group. */
12166 htab
->sec_info
[tail
->id
].u
.group
= group
;
12168 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12170 /* But wait, there's more! Input sections up to group_size
12171 bytes before the stub section can be handled by it too.
12172 Don't do this if we have a really large section after the
12173 stubs, as adding more stubs increases the chance that
12174 branches may not reach into the stub section. */
12175 if (!stubs_always_before_branch
&& !big_sec
)
12178 while (prev
!= NULL
12179 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12180 < (ppc64_elf_section_data (prev
) != NULL
12181 && ppc64_elf_section_data (prev
)->has_14bit_branch
12182 ? (group_size
= stub_group_size
>> 10) : group_size
))
12183 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12186 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12187 htab
->sec_info
[tail
->id
].u
.group
= group
;
12196 static const unsigned char glink_eh_frame_cie
[] =
12198 0, 0, 0, 16, /* length. */
12199 0, 0, 0, 0, /* id. */
12200 1, /* CIE version. */
12201 'z', 'R', 0, /* Augmentation string. */
12202 4, /* Code alignment. */
12203 0x78, /* Data alignment. */
12205 1, /* Augmentation size. */
12206 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12207 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12211 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12213 size_t this_size
= 17;
12214 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12216 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12219 else if (to_bctrl
< 256)
12221 else if (to_bctrl
< 65536)
12227 this_size
= (this_size
+ align
- 1) & -align
;
12231 /* Stripping output sections is normally done before dynamic section
12232 symbols have been allocated. This function is called later, and
12233 handles cases like htab->brlt which is mapped to its own output
12237 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12239 if (isec
->size
== 0
12240 && isec
->output_section
->size
== 0
12241 && !(isec
->output_section
->flags
& SEC_KEEP
)
12242 && !bfd_section_removed_from_list (info
->output_bfd
,
12243 isec
->output_section
)
12244 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12246 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12247 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12248 info
->output_bfd
->section_count
--;
12252 /* Determine and set the size of the stub section for a final link.
12254 The basic idea here is to examine all the relocations looking for
12255 PC-relative calls to a target that is unreachable with a "bl"
12259 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12261 bfd_size_type stub_group_size
;
12262 bfd_boolean stubs_always_before_branch
;
12263 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12268 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12269 htab
->params
->plt_thread_safe
= 1;
12270 if (!htab
->opd_abi
)
12271 htab
->params
->plt_thread_safe
= 0;
12272 else if (htab
->params
->plt_thread_safe
== -1)
12274 static const char *const thread_starter
[] =
12278 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12280 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12281 "mq_notify", "create_timer",
12286 "GOMP_parallel_start",
12287 "GOMP_parallel_loop_static",
12288 "GOMP_parallel_loop_static_start",
12289 "GOMP_parallel_loop_dynamic",
12290 "GOMP_parallel_loop_dynamic_start",
12291 "GOMP_parallel_loop_guided",
12292 "GOMP_parallel_loop_guided_start",
12293 "GOMP_parallel_loop_runtime",
12294 "GOMP_parallel_loop_runtime_start",
12295 "GOMP_parallel_sections",
12296 "GOMP_parallel_sections_start",
12302 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12304 struct elf_link_hash_entry
*h
;
12305 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12306 FALSE
, FALSE
, TRUE
);
12307 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12308 if (htab
->params
->plt_thread_safe
)
12312 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12313 if (htab
->params
->group_size
< 0)
12314 stub_group_size
= -htab
->params
->group_size
;
12316 stub_group_size
= htab
->params
->group_size
;
12318 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12321 #define STUB_SHRINK_ITER 20
12322 /* Loop until no stubs added. After iteration 20 of this loop we may
12323 exit on a stub section shrinking. This is to break out of a
12324 pathological case where adding stubs on one iteration decreases
12325 section gaps (perhaps due to alignment), which then requires
12326 fewer or smaller stubs on the next iteration. */
12331 unsigned int bfd_indx
;
12332 struct map_stub
*group
;
12334 htab
->stub_iteration
+= 1;
12336 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12338 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12340 Elf_Internal_Shdr
*symtab_hdr
;
12342 Elf_Internal_Sym
*local_syms
= NULL
;
12344 if (!is_ppc64_elf (input_bfd
))
12347 /* We'll need the symbol table in a second. */
12348 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12349 if (symtab_hdr
->sh_info
== 0)
12352 /* Walk over each section attached to the input bfd. */
12353 for (section
= input_bfd
->sections
;
12355 section
= section
->next
)
12357 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12359 /* If there aren't any relocs, then there's nothing more
12361 if ((section
->flags
& SEC_RELOC
) == 0
12362 || (section
->flags
& SEC_ALLOC
) == 0
12363 || (section
->flags
& SEC_LOAD
) == 0
12364 || (section
->flags
& SEC_CODE
) == 0
12365 || section
->reloc_count
== 0)
12368 /* If this section is a link-once section that will be
12369 discarded, then don't create any stubs. */
12370 if (section
->output_section
== NULL
12371 || section
->output_section
->owner
!= info
->output_bfd
)
12374 /* Get the relocs. */
12376 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12377 info
->keep_memory
);
12378 if (internal_relocs
== NULL
)
12379 goto error_ret_free_local
;
12381 /* Now examine each relocation. */
12382 irela
= internal_relocs
;
12383 irelaend
= irela
+ section
->reloc_count
;
12384 for (; irela
< irelaend
; irela
++)
12386 enum elf_ppc64_reloc_type r_type
;
12387 unsigned int r_indx
;
12388 enum ppc_stub_type stub_type
;
12389 struct ppc_stub_hash_entry
*stub_entry
;
12390 asection
*sym_sec
, *code_sec
;
12391 bfd_vma sym_value
, code_value
;
12392 bfd_vma destination
;
12393 unsigned long local_off
;
12394 bfd_boolean ok_dest
;
12395 struct ppc_link_hash_entry
*hash
;
12396 struct ppc_link_hash_entry
*fdh
;
12397 struct elf_link_hash_entry
*h
;
12398 Elf_Internal_Sym
*sym
;
12400 const asection
*id_sec
;
12401 struct _opd_sec_data
*opd
;
12402 struct plt_entry
*plt_ent
;
12404 r_type
= ELF64_R_TYPE (irela
->r_info
);
12405 r_indx
= ELF64_R_SYM (irela
->r_info
);
12407 if (r_type
>= R_PPC64_max
)
12409 bfd_set_error (bfd_error_bad_value
);
12410 goto error_ret_free_internal
;
12413 /* Only look for stubs on branch instructions. */
12414 if (r_type
!= R_PPC64_REL24
12415 && r_type
!= R_PPC64_REL14
12416 && r_type
!= R_PPC64_REL14_BRTAKEN
12417 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12420 /* Now determine the call target, its name, value,
12422 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12423 r_indx
, input_bfd
))
12424 goto error_ret_free_internal
;
12425 hash
= (struct ppc_link_hash_entry
*) h
;
12432 sym_value
= sym
->st_value
;
12433 if (sym_sec
!= NULL
12434 && sym_sec
->output_section
!= NULL
)
12437 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12438 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12440 sym_value
= hash
->elf
.root
.u
.def
.value
;
12441 if (sym_sec
->output_section
!= NULL
)
12444 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12445 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12447 /* Recognise an old ABI func code entry sym, and
12448 use the func descriptor sym instead if it is
12450 if (hash
->elf
.root
.root
.string
[0] == '.'
12451 && hash
->oh
!= NULL
)
12453 fdh
= ppc_follow_link (hash
->oh
);
12454 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12455 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12457 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12458 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12459 if (sym_sec
->output_section
!= NULL
)
12468 bfd_set_error (bfd_error_bad_value
);
12469 goto error_ret_free_internal
;
12476 sym_value
+= irela
->r_addend
;
12477 destination
= (sym_value
12478 + sym_sec
->output_offset
12479 + sym_sec
->output_section
->vma
);
12480 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12485 code_sec
= sym_sec
;
12486 code_value
= sym_value
;
12487 opd
= get_opd_info (sym_sec
);
12492 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12494 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12497 code_value
+= adjust
;
12498 sym_value
+= adjust
;
12500 dest
= opd_entry_value (sym_sec
, sym_value
,
12501 &code_sec
, &code_value
, FALSE
);
12502 if (dest
!= (bfd_vma
) -1)
12504 destination
= dest
;
12507 /* Fixup old ABI sym to point at code
12509 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12510 hash
->elf
.root
.u
.def
.section
= code_sec
;
12511 hash
->elf
.root
.u
.def
.value
= code_value
;
12516 /* Determine what (if any) linker stub is needed. */
12518 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12519 &plt_ent
, destination
,
12522 if (stub_type
!= ppc_stub_plt_call
)
12524 /* Check whether we need a TOC adjusting stub.
12525 Since the linker pastes together pieces from
12526 different object files when creating the
12527 _init and _fini functions, it may be that a
12528 call to what looks like a local sym is in
12529 fact a call needing a TOC adjustment. */
12530 if (code_sec
!= NULL
12531 && code_sec
->output_section
!= NULL
12532 && (htab
->sec_info
[code_sec
->id
].toc_off
12533 != htab
->sec_info
[section
->id
].toc_off
)
12534 && (code_sec
->has_toc_reloc
12535 || code_sec
->makes_toc_func_call
))
12536 stub_type
= ppc_stub_long_branch_r2off
;
12539 if (stub_type
== ppc_stub_none
)
12542 /* __tls_get_addr calls might be eliminated. */
12543 if (stub_type
!= ppc_stub_plt_call
12545 && (hash
== htab
->tls_get_addr
12546 || hash
== htab
->tls_get_addr_fd
)
12547 && section
->has_tls_reloc
12548 && irela
!= internal_relocs
)
12550 /* Get tls info. */
12551 unsigned char *tls_mask
;
12553 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12554 irela
- 1, input_bfd
))
12555 goto error_ret_free_internal
;
12556 if (*tls_mask
!= 0)
12560 if (stub_type
== ppc_stub_plt_call
)
12563 && htab
->params
->plt_localentry0
!= 0
12564 && is_elfv2_localentry0 (&hash
->elf
))
12565 htab
->has_plt_localentry0
= 1;
12566 else if (irela
+ 1 < irelaend
12567 && irela
[1].r_offset
== irela
->r_offset
+ 4
12568 && (ELF64_R_TYPE (irela
[1].r_info
)
12569 == R_PPC64_TOCSAVE
))
12571 if (!tocsave_find (htab
, INSERT
,
12572 &local_syms
, irela
+ 1, input_bfd
))
12573 goto error_ret_free_internal
;
12576 stub_type
= ppc_stub_plt_call_r2save
;
12579 /* Support for grouping stub sections. */
12580 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12582 /* Get the name of this stub. */
12583 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12585 goto error_ret_free_internal
;
12587 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12588 stub_name
, FALSE
, FALSE
);
12589 if (stub_entry
!= NULL
)
12591 /* The proper stub has already been created. */
12593 if (stub_type
== ppc_stub_plt_call_r2save
)
12594 stub_entry
->stub_type
= stub_type
;
12598 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12599 if (stub_entry
== NULL
)
12602 error_ret_free_internal
:
12603 if (elf_section_data (section
)->relocs
== NULL
)
12604 free (internal_relocs
);
12605 error_ret_free_local
:
12606 if (local_syms
!= NULL
12607 && (symtab_hdr
->contents
12608 != (unsigned char *) local_syms
))
12613 stub_entry
->stub_type
= stub_type
;
12614 if (stub_type
!= ppc_stub_plt_call
12615 && stub_type
!= ppc_stub_plt_call_r2save
)
12617 stub_entry
->target_value
= code_value
;
12618 stub_entry
->target_section
= code_sec
;
12622 stub_entry
->target_value
= sym_value
;
12623 stub_entry
->target_section
= sym_sec
;
12625 stub_entry
->h
= hash
;
12626 stub_entry
->plt_ent
= plt_ent
;
12627 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12629 if (stub_entry
->h
!= NULL
)
12630 htab
->stub_globals
+= 1;
12633 /* We're done with the internal relocs, free them. */
12634 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12635 free (internal_relocs
);
12638 if (local_syms
!= NULL
12639 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12641 if (!info
->keep_memory
)
12644 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12648 /* We may have added some stubs. Find out the new size of the
12650 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12651 if (group
->stub_sec
!= NULL
)
12653 asection
*stub_sec
= group
->stub_sec
;
12655 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12656 || stub_sec
->rawsize
< stub_sec
->size
)
12657 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12658 stub_sec
->rawsize
= stub_sec
->size
;
12659 stub_sec
->size
= 0;
12660 stub_sec
->reloc_count
= 0;
12661 stub_sec
->flags
&= ~SEC_RELOC
;
12664 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12665 || htab
->brlt
->rawsize
< htab
->brlt
->size
)
12666 htab
->brlt
->rawsize
= htab
->brlt
->size
;
12667 htab
->brlt
->size
= 0;
12668 htab
->brlt
->reloc_count
= 0;
12669 htab
->brlt
->flags
&= ~SEC_RELOC
;
12670 if (htab
->relbrlt
!= NULL
)
12671 htab
->relbrlt
->size
= 0;
12673 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12675 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12676 if (group
->needs_save_res
)
12677 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12679 if (info
->emitrelocations
12680 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12682 htab
->glink
->reloc_count
= 1;
12683 htab
->glink
->flags
|= SEC_RELOC
;
12686 if (htab
->glink_eh_frame
!= NULL
12687 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12688 && htab
->glink_eh_frame
->output_section
->size
> 8)
12690 size_t size
= 0, align
= 4;
12692 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12693 if (group
->stub_sec
!= NULL
)
12694 size
+= stub_eh_frame_size (group
, align
);
12695 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12696 size
+= (24 + align
- 1) & -align
;
12698 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12699 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12700 size
= (size
+ align
- 1) & -align
;
12701 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12702 htab
->glink_eh_frame
->size
= size
;
12705 if (htab
->params
->plt_stub_align
!= 0)
12706 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12707 if (group
->stub_sec
!= NULL
)
12709 int align
= abs (htab
->params
->plt_stub_align
);
12710 group
->stub_sec
->size
12711 = (group
->stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
12714 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12715 if (group
->stub_sec
!= NULL
12716 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12717 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12718 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12722 && (htab
->brlt
->rawsize
== htab
->brlt
->size
12723 || (htab
->stub_iteration
> STUB_SHRINK_ITER
12724 && htab
->brlt
->rawsize
> htab
->brlt
->size
))
12725 && (htab
->glink_eh_frame
== NULL
12726 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12729 /* Ask the linker to do its stuff. */
12730 (*htab
->params
->layout_sections_again
) ();
12733 if (htab
->glink_eh_frame
!= NULL
12734 && htab
->glink_eh_frame
->size
!= 0)
12737 bfd_byte
*p
, *last_fde
;
12738 size_t last_fde_len
, size
, align
, pad
;
12739 struct map_stub
*group
;
12741 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12744 htab
->glink_eh_frame
->contents
= p
;
12748 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12749 /* CIE length (rewrite in case little-endian). */
12750 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12751 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12752 p
+= last_fde_len
+ 4;
12754 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12755 if (group
->stub_sec
!= NULL
)
12758 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12760 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12763 val
= p
- htab
->glink_eh_frame
->contents
;
12764 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12766 /* Offset to stub section, written later. */
12768 /* stub section size. */
12769 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12771 /* Augmentation. */
12773 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12775 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12777 /* This FDE needs more than just the default.
12778 Describe __tls_get_addr_opt stub LR. */
12780 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12781 else if (to_bctrl
< 256)
12783 *p
++ = DW_CFA_advance_loc1
;
12786 else if (to_bctrl
< 65536)
12788 *p
++ = DW_CFA_advance_loc2
;
12789 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12794 *p
++ = DW_CFA_advance_loc4
;
12795 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12798 *p
++ = DW_CFA_offset_extended_sf
;
12800 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12801 *p
++ = DW_CFA_advance_loc
+ 4;
12802 *p
++ = DW_CFA_restore_extended
;
12806 p
= last_fde
+ last_fde_len
+ 4;
12808 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12811 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12813 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12816 val
= p
- htab
->glink_eh_frame
->contents
;
12817 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12819 /* Offset to .glink, written later. */
12822 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12824 /* Augmentation. */
12827 *p
++ = DW_CFA_advance_loc
+ 1;
12828 *p
++ = DW_CFA_register
;
12830 *p
++ = htab
->opd_abi
? 12 : 0;
12831 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12832 *p
++ = DW_CFA_restore_extended
;
12834 p
+= ((24 + align
- 1) & -align
) - 24;
12836 /* Subsume any padding into the last FDE if user .eh_frame
12837 sections are aligned more than glink_eh_frame. Otherwise any
12838 zero padding will be seen as a terminator. */
12839 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12840 size
= p
- htab
->glink_eh_frame
->contents
;
12841 pad
= ((size
+ align
- 1) & -align
) - size
;
12842 htab
->glink_eh_frame
->size
= size
+ pad
;
12843 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12846 maybe_strip_output (info
, htab
->brlt
);
12847 if (htab
->glink_eh_frame
!= NULL
)
12848 maybe_strip_output (info
, htab
->glink_eh_frame
);
12853 /* Called after we have determined section placement. If sections
12854 move, we'll be called again. Provide a value for TOCstart. */
12857 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12860 bfd_vma TOCstart
, adjust
;
12864 struct elf_link_hash_entry
*h
;
12865 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12867 if (is_elf_hash_table (htab
)
12868 && htab
->hgot
!= NULL
)
12872 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12873 if (is_elf_hash_table (htab
))
12877 && h
->root
.type
== bfd_link_hash_defined
12878 && !h
->root
.linker_def
12879 && (!is_elf_hash_table (htab
)
12880 || h
->def_regular
))
12882 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12883 + h
->root
.u
.def
.section
->output_offset
12884 + h
->root
.u
.def
.section
->output_section
->vma
);
12885 _bfd_set_gp_value (obfd
, TOCstart
);
12890 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12891 order. The TOC starts where the first of these sections starts. */
12892 s
= bfd_get_section_by_name (obfd
, ".got");
12893 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12894 s
= bfd_get_section_by_name (obfd
, ".toc");
12895 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12896 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12897 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12898 s
= bfd_get_section_by_name (obfd
, ".plt");
12899 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12901 /* This may happen for
12902 o references to TOC base (SYM@toc / TOC[tc0]) without a
12904 o bad linker script
12905 o --gc-sections and empty TOC sections
12907 FIXME: Warn user? */
12909 /* Look for a likely section. We probably won't even be
12911 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12912 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12914 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12917 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12918 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12919 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12922 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12923 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12927 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12928 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12934 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12936 /* Force alignment. */
12937 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12938 TOCstart
-= adjust
;
12939 _bfd_set_gp_value (obfd
, TOCstart
);
12941 if (info
!= NULL
&& s
!= NULL
)
12943 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12947 if (htab
->elf
.hgot
!= NULL
)
12949 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12950 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12955 struct bfd_link_hash_entry
*bh
= NULL
;
12956 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12957 s
, TOC_BASE_OFF
- adjust
,
12958 NULL
, FALSE
, FALSE
, &bh
);
12964 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12965 write out any global entry stubs. */
12968 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12970 struct bfd_link_info
*info
;
12971 struct ppc_link_hash_table
*htab
;
12972 struct plt_entry
*pent
;
12975 if (h
->root
.type
== bfd_link_hash_indirect
)
12978 if (!h
->pointer_equality_needed
)
12981 if (h
->def_regular
)
12985 htab
= ppc_hash_table (info
);
12989 s
= htab
->global_entry
;
12990 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12991 if (pent
->plt
.offset
!= (bfd_vma
) -1
12992 && pent
->addend
== 0)
12998 p
= s
->contents
+ h
->root
.u
.def
.value
;
12999 plt
= htab
->elf
.splt
;
13000 if (!htab
->elf
.dynamic_sections_created
13001 || h
->dynindx
== -1)
13002 plt
= htab
->elf
.iplt
;
13003 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13004 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13006 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13008 info
->callbacks
->einfo
13009 (_("%P: linkage table error against `%T'\n"),
13010 h
->root
.root
.string
);
13011 bfd_set_error (bfd_error_bad_value
);
13012 htab
->stub_error
= TRUE
;
13015 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13016 if (htab
->params
->emit_stub_syms
)
13018 size_t len
= strlen (h
->root
.root
.string
);
13019 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13024 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13025 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13028 if (h
->root
.type
== bfd_link_hash_new
)
13030 h
->root
.type
= bfd_link_hash_defined
;
13031 h
->root
.u
.def
.section
= s
;
13032 h
->root
.u
.def
.value
= p
- s
->contents
;
13033 h
->ref_regular
= 1;
13034 h
->def_regular
= 1;
13035 h
->ref_regular_nonweak
= 1;
13036 h
->forced_local
= 1;
13038 h
->root
.linker_def
= 1;
13042 if (PPC_HA (off
) != 0)
13044 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13047 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13049 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13051 bfd_put_32 (s
->owner
, BCTR
, p
);
13057 /* Build all the stubs associated with the current output file.
13058 The stubs are kept in a hash table attached to the main linker
13059 hash table. This function is called via gldelf64ppc_finish. */
13062 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13065 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13066 struct map_stub
*group
;
13067 asection
*stub_sec
;
13069 int stub_sec_count
= 0;
13074 /* Allocate memory to hold the linker stubs. */
13075 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13076 if ((stub_sec
= group
->stub_sec
) != NULL
13077 && stub_sec
->size
!= 0)
13079 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13080 if (stub_sec
->contents
== NULL
)
13082 stub_sec
->size
= 0;
13085 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13090 /* Build the .glink plt call stub. */
13091 if (htab
->params
->emit_stub_syms
)
13093 struct elf_link_hash_entry
*h
;
13094 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13095 TRUE
, FALSE
, FALSE
);
13098 if (h
->root
.type
== bfd_link_hash_new
)
13100 h
->root
.type
= bfd_link_hash_defined
;
13101 h
->root
.u
.def
.section
= htab
->glink
;
13102 h
->root
.u
.def
.value
= 8;
13103 h
->ref_regular
= 1;
13104 h
->def_regular
= 1;
13105 h
->ref_regular_nonweak
= 1;
13106 h
->forced_local
= 1;
13108 h
->root
.linker_def
= 1;
13111 plt0
= (htab
->elf
.splt
->output_section
->vma
13112 + htab
->elf
.splt
->output_offset
13114 if (info
->emitrelocations
)
13116 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13119 r
->r_offset
= (htab
->glink
->output_offset
13120 + htab
->glink
->output_section
->vma
);
13121 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13122 r
->r_addend
= plt0
;
13124 p
= htab
->glink
->contents
;
13125 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13126 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13130 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13132 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13134 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13136 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13138 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13140 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13142 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13144 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13146 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13148 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13153 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13155 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13157 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13159 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13161 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13163 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13165 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13167 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13169 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13171 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13173 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13175 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13177 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13180 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13182 BFD_ASSERT (p
== htab
->glink
->contents
+ GLINK_PLTRESOLVE_SIZE (htab
));
13184 /* Build the .glink lazy link call stubs. */
13186 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
13192 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13197 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13199 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13204 bfd_put_32 (htab
->glink
->owner
,
13205 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13211 /* Build .glink global entry stubs. */
13212 if (htab
->global_entry
!= NULL
&& htab
->global_entry
->size
!= 0)
13213 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13215 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13217 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13219 if (htab
->brlt
->contents
== NULL
)
13222 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13224 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13225 htab
->relbrlt
->size
);
13226 if (htab
->relbrlt
->contents
== NULL
)
13230 /* Build the stubs as directed by the stub hash table. */
13231 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13233 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13234 if (group
->needs_save_res
)
13236 stub_sec
= group
->stub_sec
;
13237 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13239 if (htab
->params
->emit_stub_syms
)
13243 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13244 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13247 stub_sec
->size
+= htab
->sfpr
->size
;
13250 if (htab
->relbrlt
!= NULL
)
13251 htab
->relbrlt
->reloc_count
= 0;
13253 if (htab
->params
->plt_stub_align
!= 0)
13254 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13255 if ((stub_sec
= group
->stub_sec
) != NULL
)
13257 int align
= abs (htab
->params
->plt_stub_align
);
13258 stub_sec
->size
= (stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
13261 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13262 if ((stub_sec
= group
->stub_sec
) != NULL
)
13264 stub_sec_count
+= 1;
13265 if (stub_sec
->rawsize
!= stub_sec
->size
13266 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13267 || stub_sec
->rawsize
< stub_sec
->size
))
13273 htab
->stub_error
= TRUE
;
13274 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13277 if (htab
->stub_error
)
13283 *stats
= bfd_malloc (500);
13284 if (*stats
== NULL
)
13287 len
= sprintf (*stats
,
13288 ngettext ("linker stubs in %u group\n",
13289 "linker stubs in %u groups\n",
13292 sprintf (*stats
+ len
, _(" branch %lu\n"
13293 " toc adjust %lu\n"
13294 " long branch %lu\n"
13295 " long toc adj %lu\n"
13297 " plt call toc %lu\n"
13298 " global entry %lu"),
13299 htab
->stub_count
[ppc_stub_long_branch
- 1],
13300 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13301 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13302 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13303 htab
->stub_count
[ppc_stub_plt_call
- 1],
13304 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13305 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13310 /* What to do when ld finds relocations against symbols defined in
13311 discarded sections. */
13313 static unsigned int
13314 ppc64_elf_action_discarded (asection
*sec
)
13316 if (strcmp (".opd", sec
->name
) == 0)
13319 if (strcmp (".toc", sec
->name
) == 0)
13322 if (strcmp (".toc1", sec
->name
) == 0)
13325 return _bfd_elf_default_action_discarded (sec
);
13328 /* The RELOCATE_SECTION function is called by the ELF backend linker
13329 to handle the relocations for a section.
13331 The relocs are always passed as Rela structures; if the section
13332 actually uses Rel structures, the r_addend field will always be
13335 This function is responsible for adjust the section contents as
13336 necessary, and (if using Rela relocs and generating a
13337 relocatable output file) adjusting the reloc addend as
13340 This function does not have to worry about setting the reloc
13341 address or the reloc symbol index.
13343 LOCAL_SYMS is a pointer to the swapped in local symbols.
13345 LOCAL_SECTIONS is an array giving the section in the input file
13346 corresponding to the st_shndx field of each local symbol.
13348 The global hash table entry for the global symbols can be found
13349 via elf_sym_hashes (input_bfd).
13351 When generating relocatable output, this function must handle
13352 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13353 going to be the section symbol corresponding to the output
13354 section, which means that the addend must be adjusted
13358 ppc64_elf_relocate_section (bfd
*output_bfd
,
13359 struct bfd_link_info
*info
,
13361 asection
*input_section
,
13362 bfd_byte
*contents
,
13363 Elf_Internal_Rela
*relocs
,
13364 Elf_Internal_Sym
*local_syms
,
13365 asection
**local_sections
)
13367 struct ppc_link_hash_table
*htab
;
13368 Elf_Internal_Shdr
*symtab_hdr
;
13369 struct elf_link_hash_entry
**sym_hashes
;
13370 Elf_Internal_Rela
*rel
;
13371 Elf_Internal_Rela
*wrel
;
13372 Elf_Internal_Rela
*relend
;
13373 Elf_Internal_Rela outrel
;
13375 struct got_entry
**local_got_ents
;
13377 bfd_boolean ret
= TRUE
;
13378 bfd_boolean is_opd
;
13379 /* Assume 'at' branch hints. */
13380 bfd_boolean is_isa_v2
= TRUE
;
13381 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13383 /* Initialize howto table if needed. */
13384 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13387 htab
= ppc_hash_table (info
);
13391 /* Don't relocate stub sections. */
13392 if (input_section
->owner
== htab
->params
->stub_bfd
)
13395 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13397 local_got_ents
= elf_local_got_ents (input_bfd
);
13398 TOCstart
= elf_gp (output_bfd
);
13399 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13400 sym_hashes
= elf_sym_hashes (input_bfd
);
13401 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13403 rel
= wrel
= relocs
;
13404 relend
= relocs
+ input_section
->reloc_count
;
13405 for (; rel
< relend
; wrel
++, rel
++)
13407 enum elf_ppc64_reloc_type r_type
;
13409 bfd_reloc_status_type r
;
13410 Elf_Internal_Sym
*sym
;
13412 struct elf_link_hash_entry
*h_elf
;
13413 struct ppc_link_hash_entry
*h
;
13414 struct ppc_link_hash_entry
*fdh
;
13415 const char *sym_name
;
13416 unsigned long r_symndx
, toc_symndx
;
13417 bfd_vma toc_addend
;
13418 unsigned char tls_mask
, tls_gd
, tls_type
;
13419 unsigned char sym_type
;
13420 bfd_vma relocation
;
13421 bfd_boolean unresolved_reloc
;
13422 bfd_boolean warned
;
13423 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13426 struct ppc_stub_hash_entry
*stub_entry
;
13427 bfd_vma max_br_offset
;
13429 Elf_Internal_Rela orig_rel
;
13430 reloc_howto_type
*howto
;
13431 struct reloc_howto_struct alt_howto
;
13436 r_type
= ELF64_R_TYPE (rel
->r_info
);
13437 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13439 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13440 symbol of the previous ADDR64 reloc. The symbol gives us the
13441 proper TOC base to use. */
13442 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13444 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13446 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13452 unresolved_reloc
= FALSE
;
13455 if (r_symndx
< symtab_hdr
->sh_info
)
13457 /* It's a local symbol. */
13458 struct _opd_sec_data
*opd
;
13460 sym
= local_syms
+ r_symndx
;
13461 sec
= local_sections
[r_symndx
];
13462 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13463 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13464 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13465 opd
= get_opd_info (sec
);
13466 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13468 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13474 /* If this is a relocation against the opd section sym
13475 and we have edited .opd, adjust the reloc addend so
13476 that ld -r and ld --emit-relocs output is correct.
13477 If it is a reloc against some other .opd symbol,
13478 then the symbol value will be adjusted later. */
13479 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13480 rel
->r_addend
+= adjust
;
13482 relocation
+= adjust
;
13488 bfd_boolean ignored
;
13490 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13491 r_symndx
, symtab_hdr
, sym_hashes
,
13492 h_elf
, sec
, relocation
,
13493 unresolved_reloc
, warned
, ignored
);
13494 sym_name
= h_elf
->root
.root
.string
;
13495 sym_type
= h_elf
->type
;
13497 && sec
->owner
== output_bfd
13498 && strcmp (sec
->name
, ".opd") == 0)
13500 /* This is a symbol defined in a linker script. All
13501 such are defined in output sections, even those
13502 defined by simple assignment from a symbol defined in
13503 an input section. Transfer the symbol to an
13504 appropriate input .opd section, so that a branch to
13505 this symbol will be mapped to the location specified
13506 by the opd entry. */
13507 struct bfd_link_order
*lo
;
13508 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13509 if (lo
->type
== bfd_indirect_link_order
)
13511 asection
*isec
= lo
->u
.indirect
.section
;
13512 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13513 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13516 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13517 h_elf
->root
.u
.def
.section
= isec
;
13524 h
= (struct ppc_link_hash_entry
*) h_elf
;
13526 if (sec
!= NULL
&& discarded_section (sec
))
13528 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13529 input_bfd
, input_section
,
13530 contents
+ rel
->r_offset
);
13531 wrel
->r_offset
= rel
->r_offset
;
13533 wrel
->r_addend
= 0;
13535 /* For ld -r, remove relocations in debug sections against
13536 symbols defined in discarded sections. Not done for
13537 non-debug to preserve relocs in .eh_frame which the
13538 eh_frame editing code expects to be present. */
13539 if (bfd_link_relocatable (info
)
13540 && (input_section
->flags
& SEC_DEBUGGING
))
13546 if (bfd_link_relocatable (info
))
13549 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13551 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13552 sec
= bfd_abs_section_ptr
;
13553 unresolved_reloc
= FALSE
;
13556 /* TLS optimizations. Replace instruction sequences and relocs
13557 based on information we collected in tls_optimize. We edit
13558 RELOCS so that --emit-relocs will output something sensible
13559 for the final instruction stream. */
13564 tls_mask
= h
->tls_mask
;
13565 else if (local_got_ents
!= NULL
)
13567 struct plt_entry
**local_plt
= (struct plt_entry
**)
13568 (local_got_ents
+ symtab_hdr
->sh_info
);
13569 unsigned char *lgot_masks
= (unsigned char *)
13570 (local_plt
+ symtab_hdr
->sh_info
);
13571 tls_mask
= lgot_masks
[r_symndx
];
13574 && (r_type
== R_PPC64_TLS
13575 || r_type
== R_PPC64_TLSGD
13576 || r_type
== R_PPC64_TLSLD
))
13578 /* Check for toc tls entries. */
13579 unsigned char *toc_tls
;
13581 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13582 &local_syms
, rel
, input_bfd
))
13586 tls_mask
= *toc_tls
;
13589 /* Check that tls relocs are used with tls syms, and non-tls
13590 relocs are used with non-tls syms. */
13591 if (r_symndx
!= STN_UNDEF
13592 && r_type
!= R_PPC64_NONE
13594 || h
->elf
.root
.type
== bfd_link_hash_defined
13595 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13596 && (IS_PPC64_TLS_RELOC (r_type
)
13597 != (sym_type
== STT_TLS
13598 || (sym_type
== STT_SECTION
13599 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13602 && (r_type
== R_PPC64_TLS
13603 || r_type
== R_PPC64_TLSGD
13604 || r_type
== R_PPC64_TLSLD
))
13605 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13608 info
->callbacks
->einfo
13609 (!IS_PPC64_TLS_RELOC (r_type
)
13610 /* xgettext:c-format */
13611 ? _("%H: %s used with TLS symbol `%T'\n")
13612 /* xgettext:c-format */
13613 : _("%H: %s used with non-TLS symbol `%T'\n"),
13614 input_bfd
, input_section
, rel
->r_offset
,
13615 ppc64_elf_howto_table
[r_type
]->name
,
13619 /* Ensure reloc mapping code below stays sane. */
13620 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13621 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13622 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13623 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13624 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13625 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13626 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13627 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13628 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13629 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13637 case R_PPC64_LO_DS_OPT
:
13638 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13639 if ((insn
& (0x3f << 26)) != 58u << 26)
13641 insn
+= (14u << 26) - (58u << 26);
13642 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13643 r_type
= R_PPC64_TOC16_LO
;
13644 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13647 case R_PPC64_TOC16
:
13648 case R_PPC64_TOC16_LO
:
13649 case R_PPC64_TOC16_DS
:
13650 case R_PPC64_TOC16_LO_DS
:
13652 /* Check for toc tls entries. */
13653 unsigned char *toc_tls
;
13656 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13657 &local_syms
, rel
, input_bfd
);
13663 tls_mask
= *toc_tls
;
13664 if (r_type
== R_PPC64_TOC16_DS
13665 || r_type
== R_PPC64_TOC16_LO_DS
)
13668 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13673 /* If we found a GD reloc pair, then we might be
13674 doing a GD->IE transition. */
13677 tls_gd
= TLS_TPRELGD
;
13678 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13681 else if (retval
== 3)
13683 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13691 case R_PPC64_GOT_TPREL16_HI
:
13692 case R_PPC64_GOT_TPREL16_HA
:
13694 && (tls_mask
& TLS_TPREL
) == 0)
13696 rel
->r_offset
-= d_offset
;
13697 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13698 r_type
= R_PPC64_NONE
;
13699 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13703 case R_PPC64_GOT_TPREL16_DS
:
13704 case R_PPC64_GOT_TPREL16_LO_DS
:
13706 && (tls_mask
& TLS_TPREL
) == 0)
13709 insn
= bfd_get_32 (input_bfd
,
13710 contents
+ rel
->r_offset
- d_offset
);
13712 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13713 bfd_put_32 (input_bfd
, insn
,
13714 contents
+ rel
->r_offset
- d_offset
);
13715 r_type
= R_PPC64_TPREL16_HA
;
13716 if (toc_symndx
!= 0)
13718 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13719 rel
->r_addend
= toc_addend
;
13720 /* We changed the symbol. Start over in order to
13721 get h, sym, sec etc. right. */
13725 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13731 && (tls_mask
& TLS_TPREL
) == 0)
13733 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13734 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13737 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13738 /* Was PPC64_TLS which sits on insn boundary, now
13739 PPC64_TPREL16_LO which is at low-order half-word. */
13740 rel
->r_offset
+= d_offset
;
13741 r_type
= R_PPC64_TPREL16_LO
;
13742 if (toc_symndx
!= 0)
13744 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13745 rel
->r_addend
= toc_addend
;
13746 /* We changed the symbol. Start over in order to
13747 get h, sym, sec etc. right. */
13751 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13755 case R_PPC64_GOT_TLSGD16_HI
:
13756 case R_PPC64_GOT_TLSGD16_HA
:
13757 tls_gd
= TLS_TPRELGD
;
13758 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13762 case R_PPC64_GOT_TLSLD16_HI
:
13763 case R_PPC64_GOT_TLSLD16_HA
:
13764 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13767 if ((tls_mask
& tls_gd
) != 0)
13768 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13769 + R_PPC64_GOT_TPREL16_DS
);
13772 rel
->r_offset
-= d_offset
;
13773 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13774 r_type
= R_PPC64_NONE
;
13776 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13780 case R_PPC64_GOT_TLSGD16
:
13781 case R_PPC64_GOT_TLSGD16_LO
:
13782 tls_gd
= TLS_TPRELGD
;
13783 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13787 case R_PPC64_GOT_TLSLD16
:
13788 case R_PPC64_GOT_TLSLD16_LO
:
13789 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13791 unsigned int insn1
, insn2
;
13795 offset
= (bfd_vma
) -1;
13796 /* If not using the newer R_PPC64_TLSGD/LD to mark
13797 __tls_get_addr calls, we must trust that the call
13798 stays with its arg setup insns, ie. that the next
13799 reloc is the __tls_get_addr call associated with
13800 the current reloc. Edit both insns. */
13801 if (input_section
->has_tls_get_addr_call
13802 && rel
+ 1 < relend
13803 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13804 htab
->tls_get_addr
,
13805 htab
->tls_get_addr_fd
))
13806 offset
= rel
[1].r_offset
;
13807 /* We read the low GOT_TLS (or TOC16) insn because we
13808 need to keep the destination reg. It may be
13809 something other than the usual r3, and moved to r3
13810 before the call by intervening code. */
13811 insn1
= bfd_get_32 (input_bfd
,
13812 contents
+ rel
->r_offset
- d_offset
);
13813 if ((tls_mask
& tls_gd
) != 0)
13816 insn1
&= (0x1f << 21) | (0x1f << 16);
13817 insn1
|= 58 << 26; /* ld */
13818 insn2
= 0x7c636a14; /* add 3,3,13 */
13819 if (offset
!= (bfd_vma
) -1)
13820 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13821 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13822 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13823 + R_PPC64_GOT_TPREL16_DS
);
13825 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13826 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13831 insn1
&= 0x1f << 21;
13832 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13833 insn2
= 0x38630000; /* addi 3,3,0 */
13836 /* Was an LD reloc. */
13838 sec
= local_sections
[toc_symndx
];
13840 r_symndx
< symtab_hdr
->sh_info
;
13842 if (local_sections
[r_symndx
] == sec
)
13844 if (r_symndx
>= symtab_hdr
->sh_info
)
13845 r_symndx
= STN_UNDEF
;
13846 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13847 if (r_symndx
!= STN_UNDEF
)
13848 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13849 + sec
->output_offset
13850 + sec
->output_section
->vma
);
13852 else if (toc_symndx
!= 0)
13854 r_symndx
= toc_symndx
;
13855 rel
->r_addend
= toc_addend
;
13857 r_type
= R_PPC64_TPREL16_HA
;
13858 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13859 if (offset
!= (bfd_vma
) -1)
13861 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13862 R_PPC64_TPREL16_LO
);
13863 rel
[1].r_offset
= offset
+ d_offset
;
13864 rel
[1].r_addend
= rel
->r_addend
;
13867 bfd_put_32 (input_bfd
, insn1
,
13868 contents
+ rel
->r_offset
- d_offset
);
13869 if (offset
!= (bfd_vma
) -1)
13870 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13871 if ((tls_mask
& tls_gd
) == 0
13872 && (tls_gd
== 0 || toc_symndx
!= 0))
13874 /* We changed the symbol. Start over in order
13875 to get h, sym, sec etc. right. */
13881 case R_PPC64_TLSGD
:
13882 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13884 unsigned int insn2
;
13885 bfd_vma offset
= rel
->r_offset
;
13887 if ((tls_mask
& TLS_TPRELGD
) != 0)
13890 r_type
= R_PPC64_NONE
;
13891 insn2
= 0x7c636a14; /* add 3,3,13 */
13896 if (toc_symndx
!= 0)
13898 r_symndx
= toc_symndx
;
13899 rel
->r_addend
= toc_addend
;
13901 r_type
= R_PPC64_TPREL16_LO
;
13902 rel
->r_offset
= offset
+ d_offset
;
13903 insn2
= 0x38630000; /* addi 3,3,0 */
13905 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13906 /* Zap the reloc on the _tls_get_addr call too. */
13907 BFD_ASSERT (offset
== rel
[1].r_offset
);
13908 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13909 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13910 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13915 case R_PPC64_TLSLD
:
13916 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13918 unsigned int insn2
;
13919 bfd_vma offset
= rel
->r_offset
;
13922 sec
= local_sections
[toc_symndx
];
13924 r_symndx
< symtab_hdr
->sh_info
;
13926 if (local_sections
[r_symndx
] == sec
)
13928 if (r_symndx
>= symtab_hdr
->sh_info
)
13929 r_symndx
= STN_UNDEF
;
13930 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13931 if (r_symndx
!= STN_UNDEF
)
13932 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13933 + sec
->output_offset
13934 + sec
->output_section
->vma
);
13936 r_type
= R_PPC64_TPREL16_LO
;
13937 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13938 rel
->r_offset
= offset
+ d_offset
;
13939 /* Zap the reloc on the _tls_get_addr call too. */
13940 BFD_ASSERT (offset
== rel
[1].r_offset
);
13941 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13942 insn2
= 0x38630000; /* addi 3,3,0 */
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 if (stub_entry
->stub_type
== ppc_stub_plt_call
14135 && htab
->params
->plt_localentry0
!= 0
14136 && is_elfv2_localentry0 (&h
->elf
))
14138 /* The function doesn't use or change r2. */
14139 can_plt_call
= TRUE
;
14142 /* All of these stubs may modify r2, so there must be a
14143 branch and link followed by a nop. The nop is
14144 replaced by an insn to restore r2. */
14145 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14149 br
= bfd_get_32 (input_bfd
,
14150 contents
+ rel
->r_offset
);
14155 nop
= bfd_get_32 (input_bfd
,
14156 contents
+ rel
->r_offset
+ 4);
14158 || nop
== CROR_151515
|| nop
== CROR_313131
)
14161 && (h
== htab
->tls_get_addr_fd
14162 || h
== htab
->tls_get_addr
)
14163 && htab
->params
->tls_get_addr_opt
)
14165 /* Special stub used, leave nop alone. */
14168 bfd_put_32 (input_bfd
,
14169 LD_R2_0R1
+ STK_TOC (htab
),
14170 contents
+ rel
->r_offset
+ 4);
14171 can_plt_call
= TRUE
;
14176 if (!can_plt_call
&& h
!= NULL
)
14178 const char *name
= h
->elf
.root
.root
.string
;
14183 if (strncmp (name
, "__libc_start_main", 17) == 0
14184 && (name
[17] == 0 || name
[17] == '@'))
14186 /* Allow crt1 branch to go via a toc adjusting
14187 stub. Other calls that never return could do
14188 the same, if we could detect such. */
14189 can_plt_call
= TRUE
;
14195 /* g++ as of 20130507 emits self-calls without a
14196 following nop. This is arguably wrong since we
14197 have conflicting information. On the one hand a
14198 global symbol and on the other a local call
14199 sequence, but don't error for this special case.
14200 It isn't possible to cheaply verify we have
14201 exactly such a call. Allow all calls to the same
14203 asection
*code_sec
= sec
;
14205 if (get_opd_info (sec
) != NULL
)
14207 bfd_vma off
= (relocation
+ addend
14208 - sec
->output_section
->vma
14209 - sec
->output_offset
);
14211 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14213 if (code_sec
== input_section
)
14214 can_plt_call
= TRUE
;
14219 if (stub_entry
->stub_type
== ppc_stub_plt_call
14220 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14221 info
->callbacks
->einfo
14222 /* xgettext:c-format */
14223 (_("%H: call to `%T' lacks nop, can't restore toc; "
14224 "recompile with -fPIC\n"),
14225 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14227 info
->callbacks
->einfo
14228 /* xgettext:c-format */
14229 (_("%H: call to `%T' lacks nop, can't restore toc; "
14230 "(-mcmodel=small toc adjust stub)\n"),
14231 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14233 bfd_set_error (bfd_error_bad_value
);
14238 && (stub_entry
->stub_type
== ppc_stub_plt_call
14239 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14240 unresolved_reloc
= FALSE
;
14243 if ((stub_entry
== NULL
14244 || stub_entry
->stub_type
== ppc_stub_long_branch
14245 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14246 && get_opd_info (sec
) != NULL
)
14248 /* The branch destination is the value of the opd entry. */
14249 bfd_vma off
= (relocation
+ addend
14250 - sec
->output_section
->vma
14251 - sec
->output_offset
);
14252 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14253 if (dest
!= (bfd_vma
) -1)
14257 reloc_dest
= DEST_OPD
;
14261 /* If the branch is out of reach we ought to have a long
14263 from
= (rel
->r_offset
14264 + input_section
->output_offset
14265 + input_section
->output_section
->vma
);
14267 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14271 if (stub_entry
!= NULL
14272 && (stub_entry
->stub_type
== ppc_stub_long_branch
14273 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14274 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14275 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14276 || (relocation
+ addend
- from
+ max_br_offset
14277 < 2 * max_br_offset
)))
14278 /* Don't use the stub if this branch is in range. */
14281 if (stub_entry
!= NULL
)
14283 /* Munge up the value and addend so that we call the stub
14284 rather than the procedure directly. */
14285 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14287 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14288 relocation
+= (stub_sec
->output_offset
14289 + stub_sec
->output_section
->vma
14290 + stub_sec
->size
- htab
->sfpr
->size
14291 - htab
->sfpr
->output_offset
14292 - htab
->sfpr
->output_section
->vma
);
14294 relocation
= (stub_entry
->stub_offset
14295 + stub_sec
->output_offset
14296 + stub_sec
->output_section
->vma
);
14298 reloc_dest
= DEST_STUB
;
14300 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14301 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14302 && (ALWAYS_EMIT_R2SAVE
14303 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14304 && rel
+ 1 < relend
14305 && rel
[1].r_offset
== rel
->r_offset
+ 4
14306 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14314 /* Set 'a' bit. This is 0b00010 in BO field for branch
14315 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14316 for branch on CTR insns (BO == 1a00t or 1a01t). */
14317 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14318 insn
|= 0x02 << 21;
14319 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14320 insn
|= 0x08 << 21;
14326 /* Invert 'y' bit if not the default. */
14327 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14328 insn
^= 0x01 << 21;
14331 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14334 /* NOP out calls to undefined weak functions.
14335 We can thus call a weak function without first
14336 checking whether the function is defined. */
14338 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14339 && h
->elf
.dynindx
== -1
14340 && r_type
== R_PPC64_REL24
14344 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14350 /* Set `addend'. */
14355 info
->callbacks
->einfo
14356 /* xgettext:c-format */
14357 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14358 input_bfd
, (int) r_type
, sym_name
);
14360 bfd_set_error (bfd_error_bad_value
);
14366 case R_PPC64_TLSGD
:
14367 case R_PPC64_TLSLD
:
14368 case R_PPC64_TOCSAVE
:
14369 case R_PPC64_GNU_VTINHERIT
:
14370 case R_PPC64_GNU_VTENTRY
:
14371 case R_PPC64_ENTRY
:
14374 /* GOT16 relocations. Like an ADDR16 using the symbol's
14375 address in the GOT as relocation value instead of the
14376 symbol's value itself. Also, create a GOT entry for the
14377 symbol and put the symbol value there. */
14378 case R_PPC64_GOT_TLSGD16
:
14379 case R_PPC64_GOT_TLSGD16_LO
:
14380 case R_PPC64_GOT_TLSGD16_HI
:
14381 case R_PPC64_GOT_TLSGD16_HA
:
14382 tls_type
= TLS_TLS
| TLS_GD
;
14385 case R_PPC64_GOT_TLSLD16
:
14386 case R_PPC64_GOT_TLSLD16_LO
:
14387 case R_PPC64_GOT_TLSLD16_HI
:
14388 case R_PPC64_GOT_TLSLD16_HA
:
14389 tls_type
= TLS_TLS
| TLS_LD
;
14392 case R_PPC64_GOT_TPREL16_DS
:
14393 case R_PPC64_GOT_TPREL16_LO_DS
:
14394 case R_PPC64_GOT_TPREL16_HI
:
14395 case R_PPC64_GOT_TPREL16_HA
:
14396 tls_type
= TLS_TLS
| TLS_TPREL
;
14399 case R_PPC64_GOT_DTPREL16_DS
:
14400 case R_PPC64_GOT_DTPREL16_LO_DS
:
14401 case R_PPC64_GOT_DTPREL16_HI
:
14402 case R_PPC64_GOT_DTPREL16_HA
:
14403 tls_type
= TLS_TLS
| TLS_DTPREL
;
14406 case R_PPC64_GOT16
:
14407 case R_PPC64_GOT16_LO
:
14408 case R_PPC64_GOT16_HI
:
14409 case R_PPC64_GOT16_HA
:
14410 case R_PPC64_GOT16_DS
:
14411 case R_PPC64_GOT16_LO_DS
:
14414 /* Relocation is to the entry for this symbol in the global
14419 unsigned long indx
= 0;
14420 struct got_entry
*ent
;
14422 if (tls_type
== (TLS_TLS
| TLS_LD
)
14424 || !h
->elf
.def_dynamic
))
14425 ent
= ppc64_tlsld_got (input_bfd
);
14430 if (!htab
->elf
.dynamic_sections_created
14431 || h
->elf
.dynindx
== -1
14432 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14433 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14434 /* This is actually a static link, or it is a
14435 -Bsymbolic link and the symbol is defined
14436 locally, or the symbol was forced to be local
14437 because of a version file. */
14441 indx
= h
->elf
.dynindx
;
14442 unresolved_reloc
= FALSE
;
14444 ent
= h
->elf
.got
.glist
;
14448 if (local_got_ents
== NULL
)
14450 ent
= local_got_ents
[r_symndx
];
14453 for (; ent
!= NULL
; ent
= ent
->next
)
14454 if (ent
->addend
== orig_rel
.r_addend
14455 && ent
->owner
== input_bfd
14456 && ent
->tls_type
== tls_type
)
14462 if (ent
->is_indirect
)
14463 ent
= ent
->got
.ent
;
14464 offp
= &ent
->got
.offset
;
14465 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14469 /* The offset must always be a multiple of 8. We use the
14470 least significant bit to record whether we have already
14471 processed this entry. */
14473 if ((off
& 1) != 0)
14477 /* Generate relocs for the dynamic linker, except in
14478 the case of TLSLD where we'll use one entry per
14486 ? h
->elf
.type
== STT_GNU_IFUNC
14487 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14490 relgot
= htab
->elf
.irelplt
;
14492 htab
->local_ifunc_resolver
= 1;
14493 else if (is_static_defined (&h
->elf
))
14494 htab
->maybe_local_ifunc_resolver
= 1;
14497 || (bfd_link_pic (info
)
14499 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14500 || (tls_type
== (TLS_TLS
| TLS_LD
)
14501 && !h
->elf
.def_dynamic
))
14502 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
14503 && bfd_link_executable (info
)
14504 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
14505 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14506 if (relgot
!= NULL
)
14508 outrel
.r_offset
= (got
->output_section
->vma
14509 + got
->output_offset
14511 outrel
.r_addend
= addend
;
14512 if (tls_type
& (TLS_LD
| TLS_GD
))
14514 outrel
.r_addend
= 0;
14515 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14516 if (tls_type
== (TLS_TLS
| TLS_GD
))
14518 loc
= relgot
->contents
;
14519 loc
+= (relgot
->reloc_count
++
14520 * sizeof (Elf64_External_Rela
));
14521 bfd_elf64_swap_reloca_out (output_bfd
,
14523 outrel
.r_offset
+= 8;
14524 outrel
.r_addend
= addend
;
14526 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14529 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14530 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14531 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14532 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14533 else if (indx
!= 0)
14534 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14538 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14540 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14542 /* Write the .got section contents for the sake
14544 loc
= got
->contents
+ off
;
14545 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14549 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14551 outrel
.r_addend
+= relocation
;
14552 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14554 if (htab
->elf
.tls_sec
== NULL
)
14555 outrel
.r_addend
= 0;
14557 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14560 loc
= relgot
->contents
;
14561 loc
+= (relgot
->reloc_count
++
14562 * sizeof (Elf64_External_Rela
));
14563 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14566 /* Init the .got section contents here if we're not
14567 emitting a reloc. */
14570 relocation
+= addend
;
14573 if (htab
->elf
.tls_sec
== NULL
)
14577 if (tls_type
& TLS_LD
)
14580 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14581 if (tls_type
& TLS_TPREL
)
14582 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14585 if (tls_type
& (TLS_GD
| TLS_LD
))
14587 bfd_put_64 (output_bfd
, relocation
,
14588 got
->contents
+ off
+ 8);
14592 bfd_put_64 (output_bfd
, relocation
,
14593 got
->contents
+ off
);
14597 if (off
>= (bfd_vma
) -2)
14600 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14601 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14605 case R_PPC64_PLT16_HA
:
14606 case R_PPC64_PLT16_HI
:
14607 case R_PPC64_PLT16_LO
:
14608 case R_PPC64_PLT32
:
14609 case R_PPC64_PLT64
:
14610 /* Relocation is to the entry for this symbol in the
14611 procedure linkage table. */
14613 struct plt_entry
**plt_list
= NULL
;
14615 plt_list
= &h
->elf
.plt
.plist
;
14616 else if (local_got_ents
!= NULL
)
14618 struct plt_entry
**local_plt
= (struct plt_entry
**)
14619 (local_got_ents
+ symtab_hdr
->sh_info
);
14620 unsigned char *local_got_tls_masks
= (unsigned char *)
14621 (local_plt
+ symtab_hdr
->sh_info
);
14622 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14623 plt_list
= local_plt
+ r_symndx
;
14627 struct plt_entry
*ent
;
14629 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14630 if (ent
->plt
.offset
!= (bfd_vma
) -1
14631 && ent
->addend
== orig_rel
.r_addend
)
14635 plt
= htab
->elf
.splt
;
14636 if (!htab
->elf
.dynamic_sections_created
14638 || h
->elf
.dynindx
== -1)
14639 plt
= htab
->elf
.iplt
;
14640 relocation
= (plt
->output_section
->vma
14641 + plt
->output_offset
14642 + ent
->plt
.offset
);
14644 unresolved_reloc
= FALSE
;
14652 /* Relocation value is TOC base. */
14653 relocation
= TOCstart
;
14654 if (r_symndx
== STN_UNDEF
)
14655 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14656 else if (unresolved_reloc
)
14658 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14659 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14661 unresolved_reloc
= TRUE
;
14664 /* TOC16 relocs. We want the offset relative to the TOC base,
14665 which is the address of the start of the TOC plus 0x8000.
14666 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14668 case R_PPC64_TOC16
:
14669 case R_PPC64_TOC16_LO
:
14670 case R_PPC64_TOC16_HI
:
14671 case R_PPC64_TOC16_DS
:
14672 case R_PPC64_TOC16_LO_DS
:
14673 case R_PPC64_TOC16_HA
:
14674 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14677 /* Relocate against the beginning of the section. */
14678 case R_PPC64_SECTOFF
:
14679 case R_PPC64_SECTOFF_LO
:
14680 case R_PPC64_SECTOFF_HI
:
14681 case R_PPC64_SECTOFF_DS
:
14682 case R_PPC64_SECTOFF_LO_DS
:
14683 case R_PPC64_SECTOFF_HA
:
14685 addend
-= sec
->output_section
->vma
;
14688 case R_PPC64_REL16
:
14689 case R_PPC64_REL16_LO
:
14690 case R_PPC64_REL16_HI
:
14691 case R_PPC64_REL16_HA
:
14692 case R_PPC64_REL16DX_HA
:
14695 case R_PPC64_REL14
:
14696 case R_PPC64_REL14_BRNTAKEN
:
14697 case R_PPC64_REL14_BRTAKEN
:
14698 case R_PPC64_REL24
:
14701 case R_PPC64_TPREL16
:
14702 case R_PPC64_TPREL16_LO
:
14703 case R_PPC64_TPREL16_HI
:
14704 case R_PPC64_TPREL16_HA
:
14705 case R_PPC64_TPREL16_DS
:
14706 case R_PPC64_TPREL16_LO_DS
:
14707 case R_PPC64_TPREL16_HIGH
:
14708 case R_PPC64_TPREL16_HIGHA
:
14709 case R_PPC64_TPREL16_HIGHER
:
14710 case R_PPC64_TPREL16_HIGHERA
:
14711 case R_PPC64_TPREL16_HIGHEST
:
14712 case R_PPC64_TPREL16_HIGHESTA
:
14714 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14715 && h
->elf
.dynindx
== -1)
14717 /* Make this relocation against an undefined weak symbol
14718 resolve to zero. This is really just a tweak, since
14719 code using weak externs ought to check that they are
14720 defined before using them. */
14721 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14723 insn
= bfd_get_32 (input_bfd
, p
);
14724 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14726 bfd_put_32 (input_bfd
, insn
, p
);
14729 if (htab
->elf
.tls_sec
!= NULL
)
14730 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14731 /* The TPREL16 relocs shouldn't really be used in shared
14732 libs or with non-local symbols as that will result in
14733 DT_TEXTREL being set, but support them anyway. */
14736 case R_PPC64_DTPREL16
:
14737 case R_PPC64_DTPREL16_LO
:
14738 case R_PPC64_DTPREL16_HI
:
14739 case R_PPC64_DTPREL16_HA
:
14740 case R_PPC64_DTPREL16_DS
:
14741 case R_PPC64_DTPREL16_LO_DS
:
14742 case R_PPC64_DTPREL16_HIGH
:
14743 case R_PPC64_DTPREL16_HIGHA
:
14744 case R_PPC64_DTPREL16_HIGHER
:
14745 case R_PPC64_DTPREL16_HIGHERA
:
14746 case R_PPC64_DTPREL16_HIGHEST
:
14747 case R_PPC64_DTPREL16_HIGHESTA
:
14748 if (htab
->elf
.tls_sec
!= NULL
)
14749 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14752 case R_PPC64_ADDR64_LOCAL
:
14753 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14758 case R_PPC64_DTPMOD64
:
14763 case R_PPC64_TPREL64
:
14764 if (htab
->elf
.tls_sec
!= NULL
)
14765 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14768 case R_PPC64_DTPREL64
:
14769 if (htab
->elf
.tls_sec
!= NULL
)
14770 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14771 /* Fall through. */
14773 /* Relocations that may need to be propagated if this is a
14775 case R_PPC64_REL30
:
14776 case R_PPC64_REL32
:
14777 case R_PPC64_REL64
:
14778 case R_PPC64_ADDR14
:
14779 case R_PPC64_ADDR14_BRNTAKEN
:
14780 case R_PPC64_ADDR14_BRTAKEN
:
14781 case R_PPC64_ADDR16
:
14782 case R_PPC64_ADDR16_DS
:
14783 case R_PPC64_ADDR16_HA
:
14784 case R_PPC64_ADDR16_HI
:
14785 case R_PPC64_ADDR16_HIGH
:
14786 case R_PPC64_ADDR16_HIGHA
:
14787 case R_PPC64_ADDR16_HIGHER
:
14788 case R_PPC64_ADDR16_HIGHERA
:
14789 case R_PPC64_ADDR16_HIGHEST
:
14790 case R_PPC64_ADDR16_HIGHESTA
:
14791 case R_PPC64_ADDR16_LO
:
14792 case R_PPC64_ADDR16_LO_DS
:
14793 case R_PPC64_ADDR24
:
14794 case R_PPC64_ADDR32
:
14795 case R_PPC64_ADDR64
:
14796 case R_PPC64_UADDR16
:
14797 case R_PPC64_UADDR32
:
14798 case R_PPC64_UADDR64
:
14800 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14803 if (NO_OPD_RELOCS
&& is_opd
)
14806 if (bfd_link_pic (info
)
14808 || h
->dyn_relocs
!= NULL
)
14809 && ((h
!= NULL
&& pc_dynrelocs (h
))
14810 || must_be_dyn_reloc (info
, r_type
)))
14812 ? h
->dyn_relocs
!= NULL
14813 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14815 bfd_boolean skip
, relocate
;
14820 /* When generating a dynamic object, these relocations
14821 are copied into the output file to be resolved at run
14827 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14828 input_section
, rel
->r_offset
);
14829 if (out_off
== (bfd_vma
) -1)
14831 else if (out_off
== (bfd_vma
) -2)
14832 skip
= TRUE
, relocate
= TRUE
;
14833 out_off
+= (input_section
->output_section
->vma
14834 + input_section
->output_offset
);
14835 outrel
.r_offset
= out_off
;
14836 outrel
.r_addend
= rel
->r_addend
;
14838 /* Optimize unaligned reloc use. */
14839 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14840 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14841 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14842 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14843 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14844 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14845 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14846 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14847 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14850 memset (&outrel
, 0, sizeof outrel
);
14851 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14853 && r_type
!= R_PPC64_TOC
)
14855 indx
= h
->elf
.dynindx
;
14856 BFD_ASSERT (indx
!= -1);
14857 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14861 /* This symbol is local, or marked to become local,
14862 or this is an opd section reloc which must point
14863 at a local function. */
14864 outrel
.r_addend
+= relocation
;
14865 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14867 if (is_opd
&& h
!= NULL
)
14869 /* Lie about opd entries. This case occurs
14870 when building shared libraries and we
14871 reference a function in another shared
14872 lib. The same thing happens for a weak
14873 definition in an application that's
14874 overridden by a strong definition in a
14875 shared lib. (I believe this is a generic
14876 bug in binutils handling of weak syms.)
14877 In these cases we won't use the opd
14878 entry in this lib. */
14879 unresolved_reloc
= FALSE
;
14882 && r_type
== R_PPC64_ADDR64
14884 ? h
->elf
.type
== STT_GNU_IFUNC
14885 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14886 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14889 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14891 /* We need to relocate .opd contents for ld.so.
14892 Prelink also wants simple and consistent rules
14893 for relocs. This make all RELATIVE relocs have
14894 *r_offset equal to r_addend. */
14901 ? h
->elf
.type
== STT_GNU_IFUNC
14902 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14904 info
->callbacks
->einfo
14905 /* xgettext:c-format */
14906 (_("%H: %s for indirect "
14907 "function `%T' unsupported\n"),
14908 input_bfd
, input_section
, rel
->r_offset
,
14909 ppc64_elf_howto_table
[r_type
]->name
,
14913 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14915 else if (sec
== NULL
|| sec
->owner
== NULL
)
14917 bfd_set_error (bfd_error_bad_value
);
14924 osec
= sec
->output_section
;
14925 indx
= elf_section_data (osec
)->dynindx
;
14929 if ((osec
->flags
& SEC_READONLY
) == 0
14930 && htab
->elf
.data_index_section
!= NULL
)
14931 osec
= htab
->elf
.data_index_section
;
14933 osec
= htab
->elf
.text_index_section
;
14934 indx
= elf_section_data (osec
)->dynindx
;
14936 BFD_ASSERT (indx
!= 0);
14938 /* We are turning this relocation into one
14939 against a section symbol, so subtract out
14940 the output section's address but not the
14941 offset of the input section in the output
14943 outrel
.r_addend
-= osec
->vma
;
14946 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14950 sreloc
= elf_section_data (input_section
)->sreloc
;
14952 ? h
->elf
.type
== STT_GNU_IFUNC
14953 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14955 sreloc
= htab
->elf
.irelplt
;
14957 htab
->local_ifunc_resolver
= 1;
14958 else if (is_static_defined (&h
->elf
))
14959 htab
->maybe_local_ifunc_resolver
= 1;
14961 if (sreloc
== NULL
)
14964 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14967 loc
= sreloc
->contents
;
14968 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14969 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14971 /* If this reloc is against an external symbol, it will
14972 be computed at runtime, so there's no need to do
14973 anything now. However, for the sake of prelink ensure
14974 that the section contents are a known value. */
14977 unresolved_reloc
= FALSE
;
14978 /* The value chosen here is quite arbitrary as ld.so
14979 ignores section contents except for the special
14980 case of .opd where the contents might be accessed
14981 before relocation. Choose zero, as that won't
14982 cause reloc overflow. */
14985 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14986 to improve backward compatibility with older
14988 if (r_type
== R_PPC64_ADDR64
)
14989 addend
= outrel
.r_addend
;
14990 /* Adjust pc_relative relocs to have zero in *r_offset. */
14991 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14992 addend
= outrel
.r_offset
;
14998 case R_PPC64_GLOB_DAT
:
14999 case R_PPC64_JMP_SLOT
:
15000 case R_PPC64_JMP_IREL
:
15001 case R_PPC64_RELATIVE
:
15002 /* We shouldn't ever see these dynamic relocs in relocatable
15004 /* Fall through. */
15006 case R_PPC64_PLTGOT16
:
15007 case R_PPC64_PLTGOT16_DS
:
15008 case R_PPC64_PLTGOT16_HA
:
15009 case R_PPC64_PLTGOT16_HI
:
15010 case R_PPC64_PLTGOT16_LO
:
15011 case R_PPC64_PLTGOT16_LO_DS
:
15012 case R_PPC64_PLTREL32
:
15013 case R_PPC64_PLTREL64
:
15014 /* These ones haven't been implemented yet. */
15016 info
->callbacks
->einfo
15017 /* xgettext:c-format */
15018 (_("%P: %B: %s is not supported for `%T'\n"),
15020 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15022 bfd_set_error (bfd_error_invalid_operation
);
15027 /* Multi-instruction sequences that access the TOC can be
15028 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15029 to nop; addi rb,r2,x; */
15035 case R_PPC64_GOT_TLSLD16_HI
:
15036 case R_PPC64_GOT_TLSGD16_HI
:
15037 case R_PPC64_GOT_TPREL16_HI
:
15038 case R_PPC64_GOT_DTPREL16_HI
:
15039 case R_PPC64_GOT16_HI
:
15040 case R_PPC64_TOC16_HI
:
15041 /* These relocs would only be useful if building up an
15042 offset to later add to r2, perhaps in an indexed
15043 addressing mode instruction. Don't try to optimize.
15044 Unfortunately, the possibility of someone building up an
15045 offset like this or even with the HA relocs, means that
15046 we need to check the high insn when optimizing the low
15050 case R_PPC64_GOT_TLSLD16_HA
:
15051 case R_PPC64_GOT_TLSGD16_HA
:
15052 case R_PPC64_GOT_TPREL16_HA
:
15053 case R_PPC64_GOT_DTPREL16_HA
:
15054 case R_PPC64_GOT16_HA
:
15055 case R_PPC64_TOC16_HA
:
15056 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15057 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15059 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15060 bfd_put_32 (input_bfd
, NOP
, p
);
15065 case R_PPC64_GOT_TLSLD16_LO
:
15066 case R_PPC64_GOT_TLSGD16_LO
:
15067 case R_PPC64_GOT_TPREL16_LO_DS
:
15068 case R_PPC64_GOT_DTPREL16_LO_DS
:
15069 case R_PPC64_GOT16_LO
:
15070 case R_PPC64_GOT16_LO_DS
:
15071 case R_PPC64_TOC16_LO
:
15072 case R_PPC64_TOC16_LO_DS
:
15073 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15074 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15076 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15077 insn
= bfd_get_32 (input_bfd
, p
);
15078 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15080 /* Transform addic to addi when we change reg. */
15081 insn
&= ~((0x3f << 26) | (0x1f << 16));
15082 insn
|= (14u << 26) | (2 << 16);
15086 insn
&= ~(0x1f << 16);
15089 bfd_put_32 (input_bfd
, insn
, p
);
15093 case R_PPC64_TPREL16_HA
:
15094 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15096 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15097 insn
= bfd_get_32 (input_bfd
, p
);
15098 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15099 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15100 /* xgettext:c-format */
15101 info
->callbacks
->minfo
15102 (_("%H: warning: %s unexpected insn %#x.\n"),
15103 input_bfd
, input_section
, rel
->r_offset
,
15104 ppc64_elf_howto_table
[r_type
]->name
, insn
);
15107 bfd_put_32 (input_bfd
, NOP
, p
);
15113 case R_PPC64_TPREL16_LO
:
15114 case R_PPC64_TPREL16_LO_DS
:
15115 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15117 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15118 insn
= bfd_get_32 (input_bfd
, p
);
15119 insn
&= ~(0x1f << 16);
15121 bfd_put_32 (input_bfd
, insn
, p
);
15126 /* Do any further special processing. */
15132 case R_PPC64_REL16_HA
:
15133 case R_PPC64_REL16DX_HA
:
15134 case R_PPC64_ADDR16_HA
:
15135 case R_PPC64_ADDR16_HIGHA
:
15136 case R_PPC64_ADDR16_HIGHERA
:
15137 case R_PPC64_ADDR16_HIGHESTA
:
15138 case R_PPC64_TOC16_HA
:
15139 case R_PPC64_SECTOFF_HA
:
15140 case R_PPC64_TPREL16_HA
:
15141 case R_PPC64_TPREL16_HIGHA
:
15142 case R_PPC64_TPREL16_HIGHERA
:
15143 case R_PPC64_TPREL16_HIGHESTA
:
15144 case R_PPC64_DTPREL16_HA
:
15145 case R_PPC64_DTPREL16_HIGHA
:
15146 case R_PPC64_DTPREL16_HIGHERA
:
15147 case R_PPC64_DTPREL16_HIGHESTA
:
15148 /* It's just possible that this symbol is a weak symbol
15149 that's not actually defined anywhere. In that case,
15150 'sec' would be NULL, and we should leave the symbol
15151 alone (it will be set to zero elsewhere in the link). */
15154 /* Fall through. */
15156 case R_PPC64_GOT16_HA
:
15157 case R_PPC64_PLTGOT16_HA
:
15158 case R_PPC64_PLT16_HA
:
15159 case R_PPC64_GOT_TLSGD16_HA
:
15160 case R_PPC64_GOT_TLSLD16_HA
:
15161 case R_PPC64_GOT_TPREL16_HA
:
15162 case R_PPC64_GOT_DTPREL16_HA
:
15163 /* Add 0x10000 if sign bit in 0:15 is set.
15164 Bits 0:15 are not used. */
15168 case R_PPC64_ADDR16_DS
:
15169 case R_PPC64_ADDR16_LO_DS
:
15170 case R_PPC64_GOT16_DS
:
15171 case R_PPC64_GOT16_LO_DS
:
15172 case R_PPC64_PLT16_LO_DS
:
15173 case R_PPC64_SECTOFF_DS
:
15174 case R_PPC64_SECTOFF_LO_DS
:
15175 case R_PPC64_TOC16_DS
:
15176 case R_PPC64_TOC16_LO_DS
:
15177 case R_PPC64_PLTGOT16_DS
:
15178 case R_PPC64_PLTGOT16_LO_DS
:
15179 case R_PPC64_GOT_TPREL16_DS
:
15180 case R_PPC64_GOT_TPREL16_LO_DS
:
15181 case R_PPC64_GOT_DTPREL16_DS
:
15182 case R_PPC64_GOT_DTPREL16_LO_DS
:
15183 case R_PPC64_TPREL16_DS
:
15184 case R_PPC64_TPREL16_LO_DS
:
15185 case R_PPC64_DTPREL16_DS
:
15186 case R_PPC64_DTPREL16_LO_DS
:
15187 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15189 /* If this reloc is against an lq, lxv, or stxv insn, then
15190 the value must be a multiple of 16. This is somewhat of
15191 a hack, but the "correct" way to do this by defining _DQ
15192 forms of all the _DS relocs bloats all reloc switches in
15193 this file. It doesn't make much sense to use these
15194 relocs in data, so testing the insn should be safe. */
15195 if ((insn
& (0x3f << 26)) == (56u << 26)
15196 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15198 relocation
+= addend
;
15199 addend
= insn
& (mask
^ 3);
15200 if ((relocation
& mask
) != 0)
15202 relocation
^= relocation
& mask
;
15203 info
->callbacks
->einfo
15204 /* xgettext:c-format */
15205 (_("%H: error: %s not a multiple of %u\n"),
15206 input_bfd
, input_section
, rel
->r_offset
,
15207 ppc64_elf_howto_table
[r_type
]->name
,
15209 bfd_set_error (bfd_error_bad_value
);
15216 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15217 because such sections are not SEC_ALLOC and thus ld.so will
15218 not process them. */
15219 howto
= ppc64_elf_howto_table
[(int) r_type
];
15220 if (unresolved_reloc
15221 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15222 && h
->elf
.def_dynamic
)
15223 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15224 rel
->r_offset
) != (bfd_vma
) -1)
15226 info
->callbacks
->einfo
15227 /* xgettext:c-format */
15228 (_("%H: unresolvable %s against `%T'\n"),
15229 input_bfd
, input_section
, rel
->r_offset
,
15231 h
->elf
.root
.root
.string
);
15235 /* 16-bit fields in insns mostly have signed values, but a
15236 few insns have 16-bit unsigned values. Really, we should
15237 have different reloc types. */
15238 if (howto
->complain_on_overflow
!= complain_overflow_dont
15239 && howto
->dst_mask
== 0xffff
15240 && (input_section
->flags
& SEC_CODE
) != 0)
15242 enum complain_overflow complain
= complain_overflow_signed
;
15244 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15245 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15246 complain
= complain_overflow_bitfield
;
15247 else if (howto
->rightshift
== 0
15248 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15249 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15250 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15251 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15252 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15253 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15254 complain
= complain_overflow_unsigned
;
15255 if (howto
->complain_on_overflow
!= complain
)
15257 alt_howto
= *howto
;
15258 alt_howto
.complain_on_overflow
= complain
;
15259 howto
= &alt_howto
;
15263 if (r_type
== R_PPC64_REL16DX_HA
)
15265 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15266 if (rel
->r_offset
+ 4 > input_section
->size
)
15267 r
= bfd_reloc_outofrange
;
15270 relocation
+= addend
;
15271 relocation
-= (rel
->r_offset
15272 + input_section
->output_offset
15273 + input_section
->output_section
->vma
);
15274 relocation
= (bfd_signed_vma
) relocation
>> 16;
15275 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15277 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15278 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15280 if (relocation
+ 0x8000 > 0xffff)
15281 r
= bfd_reloc_overflow
;
15285 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15286 rel
->r_offset
, relocation
, addend
);
15288 if (r
!= bfd_reloc_ok
)
15290 char *more_info
= NULL
;
15291 const char *reloc_name
= howto
->name
;
15293 if (reloc_dest
!= DEST_NORMAL
)
15295 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15296 if (more_info
!= NULL
)
15298 strcpy (more_info
, reloc_name
);
15299 strcat (more_info
, (reloc_dest
== DEST_OPD
15300 ? " (OPD)" : " (stub)"));
15301 reloc_name
= more_info
;
15305 if (r
== bfd_reloc_overflow
)
15307 /* On code like "if (foo) foo();" don't report overflow
15308 on a branch to zero when foo is undefined. */
15310 && (reloc_dest
== DEST_STUB
15312 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15313 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15314 && is_branch_reloc (r_type
))))
15315 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15316 sym_name
, reloc_name
,
15318 input_bfd
, input_section
,
15323 info
->callbacks
->einfo
15324 /* xgettext:c-format */
15325 (_("%H: %s against `%T': error %d\n"),
15326 input_bfd
, input_section
, rel
->r_offset
,
15327 reloc_name
, sym_name
, (int) r
);
15330 if (more_info
!= NULL
)
15340 Elf_Internal_Shdr
*rel_hdr
;
15341 size_t deleted
= rel
- wrel
;
15343 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15344 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15345 if (rel_hdr
->sh_size
== 0)
15347 /* It is too late to remove an empty reloc section. Leave
15349 ??? What is wrong with an empty section??? */
15350 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15353 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15354 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15355 input_section
->reloc_count
-= deleted
;
15358 /* If we're emitting relocations, then shortly after this function
15359 returns, reloc offsets and addends for this section will be
15360 adjusted. Worse, reloc symbol indices will be for the output
15361 file rather than the input. Save a copy of the relocs for
15362 opd_entry_value. */
15363 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15366 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15367 rel
= bfd_alloc (input_bfd
, amt
);
15368 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15369 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15372 memcpy (rel
, relocs
, amt
);
15377 /* Adjust the value of any local symbols in opd sections. */
15380 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15381 const char *name ATTRIBUTE_UNUSED
,
15382 Elf_Internal_Sym
*elfsym
,
15383 asection
*input_sec
,
15384 struct elf_link_hash_entry
*h
)
15386 struct _opd_sec_data
*opd
;
15393 opd
= get_opd_info (input_sec
);
15394 if (opd
== NULL
|| opd
->adjust
== NULL
)
15397 value
= elfsym
->st_value
- input_sec
->output_offset
;
15398 if (!bfd_link_relocatable (info
))
15399 value
-= input_sec
->output_section
->vma
;
15401 adjust
= opd
->adjust
[OPD_NDX (value
)];
15405 elfsym
->st_value
+= adjust
;
15409 /* Finish up dynamic symbol handling. We set the contents of various
15410 dynamic sections here. */
15413 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15414 struct bfd_link_info
*info
,
15415 struct elf_link_hash_entry
*h
,
15416 Elf_Internal_Sym
*sym
)
15418 struct ppc_link_hash_table
*htab
;
15419 struct plt_entry
*ent
;
15420 Elf_Internal_Rela rela
;
15423 htab
= ppc_hash_table (info
);
15427 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15428 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15430 /* This symbol has an entry in the procedure linkage
15431 table. Set it up. */
15432 if (!htab
->elf
.dynamic_sections_created
15433 || h
->dynindx
== -1)
15435 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15437 && (h
->root
.type
== bfd_link_hash_defined
15438 || h
->root
.type
== bfd_link_hash_defweak
));
15439 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15440 + htab
->elf
.iplt
->output_offset
15441 + ent
->plt
.offset
);
15443 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15445 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15446 rela
.r_addend
= (h
->root
.u
.def
.value
15447 + h
->root
.u
.def
.section
->output_offset
15448 + h
->root
.u
.def
.section
->output_section
->vma
15450 loc
= (htab
->elf
.irelplt
->contents
15451 + (htab
->elf
.irelplt
->reloc_count
++
15452 * sizeof (Elf64_External_Rela
)));
15453 htab
->local_ifunc_resolver
= 1;
15457 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15458 + htab
->elf
.splt
->output_offset
15459 + ent
->plt
.offset
);
15460 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15461 rela
.r_addend
= ent
->addend
;
15462 loc
= (htab
->elf
.srelplt
->contents
15463 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15464 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15465 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15466 htab
->maybe_local_ifunc_resolver
= 1;
15468 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15470 if (!htab
->opd_abi
)
15472 if (!h
->def_regular
)
15474 /* Mark the symbol as undefined, rather than as
15475 defined in glink. Leave the value if there were
15476 any relocations where pointer equality matters
15477 (this is a clue for the dynamic linker, to make
15478 function pointer comparisons work between an
15479 application and shared library), otherwise set it
15481 sym
->st_shndx
= SHN_UNDEF
;
15482 if (!h
->pointer_equality_needed
)
15484 else if (!h
->ref_regular_nonweak
)
15486 /* This breaks function pointer comparisons, but
15487 that is better than breaking tests for a NULL
15488 function pointer. */
15497 /* This symbol needs a copy reloc. Set it up. */
15500 if (h
->dynindx
== -1
15501 || (h
->root
.type
!= bfd_link_hash_defined
15502 && h
->root
.type
!= bfd_link_hash_defweak
)
15503 || htab
->elf
.srelbss
== NULL
15504 || htab
->elf
.sreldynrelro
== NULL
)
15507 rela
.r_offset
= (h
->root
.u
.def
.value
15508 + h
->root
.u
.def
.section
->output_section
->vma
15509 + h
->root
.u
.def
.section
->output_offset
);
15510 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15512 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15513 srel
= htab
->elf
.sreldynrelro
;
15515 srel
= htab
->elf
.srelbss
;
15516 loc
= srel
->contents
;
15517 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15518 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15524 /* Used to decide how to sort relocs in an optimal manner for the
15525 dynamic linker, before writing them out. */
15527 static enum elf_reloc_type_class
15528 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15529 const asection
*rel_sec
,
15530 const Elf_Internal_Rela
*rela
)
15532 enum elf_ppc64_reloc_type r_type
;
15533 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15535 if (rel_sec
== htab
->elf
.irelplt
)
15536 return reloc_class_ifunc
;
15538 r_type
= ELF64_R_TYPE (rela
->r_info
);
15541 case R_PPC64_RELATIVE
:
15542 return reloc_class_relative
;
15543 case R_PPC64_JMP_SLOT
:
15544 return reloc_class_plt
;
15546 return reloc_class_copy
;
15548 return reloc_class_normal
;
15552 /* Finish up the dynamic sections. */
15555 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15556 struct bfd_link_info
*info
)
15558 struct ppc_link_hash_table
*htab
;
15562 htab
= ppc_hash_table (info
);
15566 dynobj
= htab
->elf
.dynobj
;
15567 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15569 if (htab
->elf
.dynamic_sections_created
)
15571 Elf64_External_Dyn
*dyncon
, *dynconend
;
15573 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15576 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15577 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15578 for (; dyncon
< dynconend
; dyncon
++)
15580 Elf_Internal_Dyn dyn
;
15583 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15590 case DT_PPC64_GLINK
:
15592 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15593 /* We stupidly defined DT_PPC64_GLINK to be the start
15594 of glink rather than the first entry point, which is
15595 what ld.so needs, and now have a bigger stub to
15596 support automatic multiple TOCs. */
15597 dyn
.d_un
.d_ptr
+= GLINK_PLTRESOLVE_SIZE (htab
) - 8 * 4;
15601 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15604 dyn
.d_un
.d_ptr
= s
->vma
;
15608 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15609 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15610 if (htab
->has_plt_localentry0
)
15611 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15614 case DT_PPC64_OPDSZ
:
15615 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15618 dyn
.d_un
.d_val
= s
->size
;
15622 s
= htab
->elf
.splt
;
15623 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15627 s
= htab
->elf
.srelplt
;
15628 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15632 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15636 if (htab
->local_ifunc_resolver
)
15637 info
->callbacks
->einfo
15638 (_("%X%P: text relocations and GNU indirect "
15639 "functions will result in a segfault at runtime\n"));
15640 else if (htab
->maybe_local_ifunc_resolver
)
15641 info
->callbacks
->einfo
15642 (_("%P: warning: text relocations and GNU indirect "
15643 "functions may result in a segfault at runtime\n"));
15647 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15651 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15652 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15654 /* Fill in the first entry in the global offset table.
15655 We use it to hold the link-time TOCbase. */
15656 bfd_put_64 (output_bfd
,
15657 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15658 htab
->elf
.sgot
->contents
);
15660 /* Set .got entry size. */
15661 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15664 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15665 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15667 /* Set .plt entry size. */
15668 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15669 = PLT_ENTRY_SIZE (htab
);
15672 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15673 brlt ourselves if emitrelocations. */
15674 if (htab
->brlt
!= NULL
15675 && htab
->brlt
->reloc_count
!= 0
15676 && !_bfd_elf_link_output_relocs (output_bfd
,
15678 elf_section_data (htab
->brlt
)->rela
.hdr
,
15679 elf_section_data (htab
->brlt
)->relocs
,
15683 if (htab
->glink
!= NULL
15684 && htab
->glink
->reloc_count
!= 0
15685 && !_bfd_elf_link_output_relocs (output_bfd
,
15687 elf_section_data (htab
->glink
)->rela
.hdr
,
15688 elf_section_data (htab
->glink
)->relocs
,
15692 if (htab
->glink_eh_frame
!= NULL
15693 && htab
->glink_eh_frame
->size
!= 0)
15697 struct map_stub
*group
;
15700 p
= htab
->glink_eh_frame
->contents
;
15701 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15703 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15704 if (group
->stub_sec
!= NULL
)
15706 /* Offset to stub section. */
15707 val
= (group
->stub_sec
->output_section
->vma
15708 + group
->stub_sec
->output_offset
);
15709 val
-= (htab
->glink_eh_frame
->output_section
->vma
15710 + htab
->glink_eh_frame
->output_offset
15711 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15712 if (val
+ 0x80000000 > 0xffffffff)
15714 info
->callbacks
->einfo
15715 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15716 group
->stub_sec
->name
);
15719 bfd_put_32 (dynobj
, val
, p
+ 8);
15720 p
+= stub_eh_frame_size (group
, align
);
15722 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15724 /* Offset to .glink. */
15725 val
= (htab
->glink
->output_section
->vma
15726 + htab
->glink
->output_offset
15728 val
-= (htab
->glink_eh_frame
->output_section
->vma
15729 + htab
->glink_eh_frame
->output_offset
15730 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15731 if (val
+ 0x80000000 > 0xffffffff)
15733 info
->callbacks
->einfo
15734 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15735 htab
->glink
->name
);
15738 bfd_put_32 (dynobj
, val
, p
+ 8);
15739 p
+= (24 + align
- 1) & -align
;
15742 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15743 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15744 htab
->glink_eh_frame
,
15745 htab
->glink_eh_frame
->contents
))
15749 /* We need to handle writing out multiple GOT sections ourselves,
15750 since we didn't add them to DYNOBJ. We know dynobj is the first
15752 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15756 if (!is_ppc64_elf (dynobj
))
15759 s
= ppc64_elf_tdata (dynobj
)->got
;
15762 && s
->output_section
!= bfd_abs_section_ptr
15763 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15764 s
->contents
, s
->output_offset
,
15767 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15770 && s
->output_section
!= bfd_abs_section_ptr
15771 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15772 s
->contents
, s
->output_offset
,
15780 #include "elf64-target.h"
15782 /* FreeBSD support */
15784 #undef TARGET_LITTLE_SYM
15785 #undef TARGET_LITTLE_NAME
15787 #undef TARGET_BIG_SYM
15788 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15789 #undef TARGET_BIG_NAME
15790 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15793 #define ELF_OSABI ELFOSABI_FREEBSD
15796 #define elf64_bed elf64_powerpc_fbsd_bed
15798 #include "elf64-target.h"