1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
141 /* TOC base alignment. */
142 #define TOC_BASE_ALIGN 256
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
177 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
179 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
180 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
181 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
182 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
183 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
185 /* glink call stub instructions. We enter with the index in R0. */
186 #define GLINK_CALL_STUB_SIZE (16*4)
190 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
191 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
193 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
194 /* ld %2,(0b-1b)(%11) */
195 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
196 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
202 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
205 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
206 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
209 #define NOP 0x60000000
211 /* Some other nops. */
212 #define CROR_151515 0x4def7b82
213 #define CROR_313131 0x4ffffb82
215 /* .glink entries for the first 32k functions are two instructions. */
216 #define LI_R0_0 0x38000000 /* li %r0,0 */
217 #define B_DOT 0x48000000 /* b . */
219 /* After that, we need two instructions to load the index, followed by
221 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
222 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
224 /* Instructions used by the save and restore reg functions. */
225 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
226 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
227 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
228 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
229 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
230 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
231 #define LI_R12_0 0x39800000 /* li %r12,0 */
232 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
233 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
234 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
235 #define BLR 0x4e800020 /* blr */
237 /* Since .opd is an array of descriptors and each entry will end up
238 with identical R_PPC64_RELATIVE relocs, there is really no need to
239 propagate .opd relocs; The dynamic linker should be taught to
240 relocate .opd without reloc entries. */
241 #ifndef NO_OPD_RELOCS
242 #define NO_OPD_RELOCS 0
246 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
250 abiversion (bfd
*abfd
)
252 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
256 set_abiversion (bfd
*abfd
, int ver
)
258 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
259 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
262 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
264 /* Relocation HOWTO's. */
265 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
267 static reloc_howto_type ppc64_elf_howto_raw
[] = {
268 /* This reloc does nothing. */
269 HOWTO (R_PPC64_NONE
, /* type */
271 3, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_PPC64_NONE", /* name */
278 FALSE
, /* partial_inplace */
281 FALSE
), /* pcrel_offset */
283 /* A standard 32 bit relocation. */
284 HOWTO (R_PPC64_ADDR32
, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE
, /* pc_relative */
290 complain_overflow_bitfield
, /* complain_on_overflow */
291 bfd_elf_generic_reloc
, /* special_function */
292 "R_PPC64_ADDR32", /* name */
293 FALSE
, /* partial_inplace */
295 0xffffffff, /* dst_mask */
296 FALSE
), /* pcrel_offset */
298 /* An absolute 26 bit branch; the lower two bits must be zero.
299 FIXME: we don't check that, we just clear them. */
300 HOWTO (R_PPC64_ADDR24
, /* type */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
304 FALSE
, /* pc_relative */
306 complain_overflow_bitfield
, /* complain_on_overflow */
307 bfd_elf_generic_reloc
, /* special_function */
308 "R_PPC64_ADDR24", /* name */
309 FALSE
, /* partial_inplace */
311 0x03fffffc, /* dst_mask */
312 FALSE
), /* pcrel_offset */
314 /* A standard 16 bit relocation. */
315 HOWTO (R_PPC64_ADDR16
, /* type */
317 1, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE
, /* pc_relative */
321 complain_overflow_bitfield
, /* complain_on_overflow */
322 bfd_elf_generic_reloc
, /* special_function */
323 "R_PPC64_ADDR16", /* name */
324 FALSE
, /* partial_inplace */
326 0xffff, /* dst_mask */
327 FALSE
), /* pcrel_offset */
329 /* A 16 bit relocation without overflow. */
330 HOWTO (R_PPC64_ADDR16_LO
, /* type */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_dont
,/* complain_on_overflow */
337 bfd_elf_generic_reloc
, /* special_function */
338 "R_PPC64_ADDR16_LO", /* name */
339 FALSE
, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* Bits 16-31 of an address. */
345 HOWTO (R_PPC64_ADDR16_HI
, /* type */
347 1, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE
, /* pc_relative */
351 complain_overflow_signed
, /* complain_on_overflow */
352 bfd_elf_generic_reloc
, /* special_function */
353 "R_PPC64_ADDR16_HI", /* name */
354 FALSE
, /* partial_inplace */
356 0xffff, /* dst_mask */
357 FALSE
), /* pcrel_offset */
359 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
360 bits, treated as a signed number, is negative. */
361 HOWTO (R_PPC64_ADDR16_HA
, /* type */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE
, /* pc_relative */
367 complain_overflow_signed
, /* complain_on_overflow */
368 ppc64_elf_ha_reloc
, /* special_function */
369 "R_PPC64_ADDR16_HA", /* name */
370 FALSE
, /* partial_inplace */
372 0xffff, /* dst_mask */
373 FALSE
), /* pcrel_offset */
375 /* An absolute 16 bit branch; the lower two bits must be zero.
376 FIXME: we don't check that, we just clear them. */
377 HOWTO (R_PPC64_ADDR14
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 ppc64_elf_branch_reloc
, /* special_function */
385 "R_PPC64_ADDR14", /* name */
386 FALSE
, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 /* An absolute 16 bit branch, for which bit 10 should be set to
392 indicate that the branch is expected to be taken. The lower two
393 bits must be zero. */
394 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc
, /* special_function */
402 "R_PPC64_ADDR14_BRTAKEN",/* name */
403 FALSE
, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 FALSE
), /* pcrel_offset */
408 /* An absolute 16 bit branch, for which bit 10 should be set to
409 indicate that the branch is not expected to be taken. The lower
410 two bits must be zero. */
411 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 FALSE
, /* pc_relative */
417 complain_overflow_signed
, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc
, /* special_function */
419 "R_PPC64_ADDR14_BRNTAKEN",/* name */
420 FALSE
, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 FALSE
), /* pcrel_offset */
425 /* A relative 26 bit branch; the lower two bits must be zero. */
426 HOWTO (R_PPC64_REL24
, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 TRUE
, /* pc_relative */
432 complain_overflow_signed
, /* complain_on_overflow */
433 ppc64_elf_branch_reloc
, /* special_function */
434 "R_PPC64_REL24", /* name */
435 FALSE
, /* partial_inplace */
437 0x03fffffc, /* dst_mask */
438 TRUE
), /* pcrel_offset */
440 /* A relative 16 bit branch; the lower two bits must be zero. */
441 HOWTO (R_PPC64_REL14
, /* type */
443 2, /* size (0 = byte, 1 = short, 2 = long) */
445 TRUE
, /* pc_relative */
447 complain_overflow_signed
, /* complain_on_overflow */
448 ppc64_elf_branch_reloc
, /* special_function */
449 "R_PPC64_REL14", /* name */
450 FALSE
, /* partial_inplace */
452 0x0000fffc, /* dst_mask */
453 TRUE
), /* pcrel_offset */
455 /* A relative 16 bit branch. Bit 10 should be set to indicate that
456 the branch is expected to be taken. The lower two bits must be
458 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
462 TRUE
, /* pc_relative */
464 complain_overflow_signed
, /* complain_on_overflow */
465 ppc64_elf_brtaken_reloc
, /* special_function */
466 "R_PPC64_REL14_BRTAKEN", /* name */
467 FALSE
, /* partial_inplace */
469 0x0000fffc, /* dst_mask */
470 TRUE
), /* pcrel_offset */
472 /* A relative 16 bit branch. Bit 10 should be set to indicate that
473 the branch is not expected to be taken. The lower two bits must
475 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
, /* complain_on_overflow */
482 ppc64_elf_brtaken_reloc
, /* special_function */
483 "R_PPC64_REL14_BRNTAKEN",/* name */
484 FALSE
, /* partial_inplace */
486 0x0000fffc, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
491 HOWTO (R_PPC64_GOT16
, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_signed
, /* complain_on_overflow */
498 ppc64_elf_unhandled_reloc
, /* special_function */
499 "R_PPC64_GOT16", /* name */
500 FALSE
, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
507 HOWTO (R_PPC64_GOT16_LO
, /* type */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE
, /* pc_relative */
513 complain_overflow_dont
, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc
, /* special_function */
515 "R_PPC64_GOT16_LO", /* name */
516 FALSE
, /* partial_inplace */
518 0xffff, /* dst_mask */
519 FALSE
), /* pcrel_offset */
521 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
523 HOWTO (R_PPC64_GOT16_HI
, /* type */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE
, /* pc_relative */
529 complain_overflow_signed
,/* complain_on_overflow */
530 ppc64_elf_unhandled_reloc
, /* special_function */
531 "R_PPC64_GOT16_HI", /* name */
532 FALSE
, /* partial_inplace */
534 0xffff, /* dst_mask */
535 FALSE
), /* pcrel_offset */
537 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
539 HOWTO (R_PPC64_GOT16_HA
, /* type */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE
, /* pc_relative */
545 complain_overflow_signed
,/* complain_on_overflow */
546 ppc64_elf_unhandled_reloc
, /* special_function */
547 "R_PPC64_GOT16_HA", /* name */
548 FALSE
, /* partial_inplace */
550 0xffff, /* dst_mask */
551 FALSE
), /* pcrel_offset */
553 /* This is used only by the dynamic linker. The symbol should exist
554 both in the object being run and in some shared library. The
555 dynamic linker copies the data addressed by the symbol from the
556 shared library into the object, because the object being
557 run has to have the data at some particular address. */
558 HOWTO (R_PPC64_COPY
, /* type */
560 0, /* this one is variable size */
562 FALSE
, /* pc_relative */
564 complain_overflow_dont
, /* complain_on_overflow */
565 ppc64_elf_unhandled_reloc
, /* special_function */
566 "R_PPC64_COPY", /* name */
567 FALSE
, /* partial_inplace */
570 FALSE
), /* pcrel_offset */
572 /* Like R_PPC64_ADDR64, but used when setting global offset table
574 HOWTO (R_PPC64_GLOB_DAT
, /* type */
576 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
578 FALSE
, /* pc_relative */
580 complain_overflow_dont
, /* complain_on_overflow */
581 ppc64_elf_unhandled_reloc
, /* special_function */
582 "R_PPC64_GLOB_DAT", /* name */
583 FALSE
, /* partial_inplace */
585 ONES (64), /* dst_mask */
586 FALSE
), /* pcrel_offset */
588 /* Created by the link editor. Marks a procedure linkage table
589 entry for a symbol. */
590 HOWTO (R_PPC64_JMP_SLOT
, /* type */
592 0, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_dont
, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc
, /* special_function */
598 "R_PPC64_JMP_SLOT", /* name */
599 FALSE
, /* partial_inplace */
602 FALSE
), /* pcrel_offset */
604 /* Used only by the dynamic linker. When the object is run, this
605 doubleword64 is set to the load address of the object, plus the
607 HOWTO (R_PPC64_RELATIVE
, /* type */
609 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
611 FALSE
, /* pc_relative */
613 complain_overflow_dont
, /* complain_on_overflow */
614 bfd_elf_generic_reloc
, /* special_function */
615 "R_PPC64_RELATIVE", /* name */
616 FALSE
, /* partial_inplace */
618 ONES (64), /* dst_mask */
619 FALSE
), /* pcrel_offset */
621 /* Like R_PPC64_ADDR32, but may be unaligned. */
622 HOWTO (R_PPC64_UADDR32
, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE
, /* pc_relative */
628 complain_overflow_bitfield
, /* complain_on_overflow */
629 bfd_elf_generic_reloc
, /* special_function */
630 "R_PPC64_UADDR32", /* name */
631 FALSE
, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 FALSE
), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16, but may be unaligned. */
637 HOWTO (R_PPC64_UADDR16
, /* type */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE
, /* pc_relative */
643 complain_overflow_bitfield
, /* complain_on_overflow */
644 bfd_elf_generic_reloc
, /* special_function */
645 "R_PPC64_UADDR16", /* name */
646 FALSE
, /* partial_inplace */
648 0xffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
651 /* 32-bit PC relative. */
652 HOWTO (R_PPC64_REL32
, /* type */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
656 TRUE
, /* pc_relative */
658 complain_overflow_signed
, /* complain_on_overflow */
659 bfd_elf_generic_reloc
, /* special_function */
660 "R_PPC64_REL32", /* name */
661 FALSE
, /* partial_inplace */
663 0xffffffff, /* dst_mask */
664 TRUE
), /* pcrel_offset */
666 /* 32-bit relocation to the symbol's procedure linkage table. */
667 HOWTO (R_PPC64_PLT32
, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_bitfield
, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc
, /* special_function */
675 "R_PPC64_PLT32", /* name */
676 FALSE
, /* partial_inplace */
678 0xffffffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
681 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
682 FIXME: R_PPC64_PLTREL32 not supported. */
683 HOWTO (R_PPC64_PLTREL32
, /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 TRUE
, /* pc_relative */
689 complain_overflow_signed
, /* complain_on_overflow */
690 bfd_elf_generic_reloc
, /* special_function */
691 "R_PPC64_PLTREL32", /* name */
692 FALSE
, /* partial_inplace */
694 0xffffffff, /* dst_mask */
695 TRUE
), /* pcrel_offset */
697 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
699 HOWTO (R_PPC64_PLT16_LO
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_dont
, /* complain_on_overflow */
706 ppc64_elf_unhandled_reloc
, /* special_function */
707 "R_PPC64_PLT16_LO", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
715 HOWTO (R_PPC64_PLT16_HI
, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE
, /* pc_relative */
721 complain_overflow_signed
, /* complain_on_overflow */
722 ppc64_elf_unhandled_reloc
, /* special_function */
723 "R_PPC64_PLT16_HI", /* name */
724 FALSE
, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE
), /* pcrel_offset */
729 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
731 HOWTO (R_PPC64_PLT16_HA
, /* type */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
735 FALSE
, /* pc_relative */
737 complain_overflow_signed
, /* complain_on_overflow */
738 ppc64_elf_unhandled_reloc
, /* special_function */
739 "R_PPC64_PLT16_HA", /* name */
740 FALSE
, /* partial_inplace */
742 0xffff, /* dst_mask */
743 FALSE
), /* pcrel_offset */
745 /* 16-bit section relative relocation. */
746 HOWTO (R_PPC64_SECTOFF
, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 FALSE
, /* pc_relative */
752 complain_overflow_signed
, /* complain_on_overflow */
753 ppc64_elf_sectoff_reloc
, /* special_function */
754 "R_PPC64_SECTOFF", /* name */
755 FALSE
, /* partial_inplace */
757 0xffff, /* dst_mask */
758 FALSE
), /* pcrel_offset */
760 /* Like R_PPC64_SECTOFF, but no overflow warning. */
761 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 FALSE
, /* pc_relative */
767 complain_overflow_dont
, /* complain_on_overflow */
768 ppc64_elf_sectoff_reloc
, /* special_function */
769 "R_PPC64_SECTOFF_LO", /* name */
770 FALSE
, /* partial_inplace */
772 0xffff, /* dst_mask */
773 FALSE
), /* pcrel_offset */
775 /* 16-bit upper half section relative relocation. */
776 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 FALSE
, /* pc_relative */
782 complain_overflow_signed
, /* complain_on_overflow */
783 ppc64_elf_sectoff_reloc
, /* special_function */
784 "R_PPC64_SECTOFF_HI", /* name */
785 FALSE
, /* partial_inplace */
787 0xffff, /* dst_mask */
788 FALSE
), /* pcrel_offset */
790 /* 16-bit upper half adjusted section relative relocation. */
791 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_signed
, /* complain_on_overflow */
798 ppc64_elf_sectoff_ha_reloc
, /* special_function */
799 "R_PPC64_SECTOFF_HA", /* name */
800 FALSE
, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* Like R_PPC64_REL24 without touching the two least significant bits. */
806 HOWTO (R_PPC64_REL30
, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 TRUE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_PPC64_REL30", /* name */
815 FALSE
, /* partial_inplace */
817 0xfffffffc, /* dst_mask */
818 TRUE
), /* pcrel_offset */
820 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
822 /* A standard 64-bit relocation. */
823 HOWTO (R_PPC64_ADDR64
, /* type */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 bfd_elf_generic_reloc
, /* special_function */
831 "R_PPC64_ADDR64", /* name */
832 FALSE
, /* partial_inplace */
834 ONES (64), /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* The bits 32-47 of an address. */
838 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE
, /* pc_relative */
844 complain_overflow_dont
, /* complain_on_overflow */
845 bfd_elf_generic_reloc
, /* special_function */
846 "R_PPC64_ADDR16_HIGHER", /* name */
847 FALSE
, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* The bits 32-47 of an address, plus 1 if the contents of the low
853 16 bits, treated as a signed number, is negative. */
854 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
858 FALSE
, /* pc_relative */
860 complain_overflow_dont
, /* complain_on_overflow */
861 ppc64_elf_ha_reloc
, /* special_function */
862 "R_PPC64_ADDR16_HIGHERA", /* name */
863 FALSE
, /* partial_inplace */
865 0xffff, /* dst_mask */
866 FALSE
), /* pcrel_offset */
868 /* The bits 48-63 of an address. */
869 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
873 FALSE
, /* pc_relative */
875 complain_overflow_dont
, /* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_PPC64_ADDR16_HIGHEST", /* name */
878 FALSE
, /* partial_inplace */
880 0xffff, /* dst_mask */
881 FALSE
), /* pcrel_offset */
883 /* The bits 48-63 of an address, plus 1 if the contents of the low
884 16 bits, treated as a signed number, is negative. */
885 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE
, /* pc_relative */
891 complain_overflow_dont
, /* complain_on_overflow */
892 ppc64_elf_ha_reloc
, /* special_function */
893 "R_PPC64_ADDR16_HIGHESTA", /* name */
894 FALSE
, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE
), /* pcrel_offset */
899 /* Like ADDR64, but may be unaligned. */
900 HOWTO (R_PPC64_UADDR64
, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 FALSE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_PPC64_UADDR64", /* name */
909 FALSE
, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* 64-bit relative relocation. */
915 HOWTO (R_PPC64_REL64
, /* type */
917 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
919 TRUE
, /* pc_relative */
921 complain_overflow_dont
, /* complain_on_overflow */
922 bfd_elf_generic_reloc
, /* special_function */
923 "R_PPC64_REL64", /* name */
924 FALSE
, /* partial_inplace */
926 ONES (64), /* dst_mask */
927 TRUE
), /* pcrel_offset */
929 /* 64-bit relocation to the symbol's procedure linkage table. */
930 HOWTO (R_PPC64_PLT64
, /* type */
932 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
934 FALSE
, /* pc_relative */
936 complain_overflow_dont
, /* complain_on_overflow */
937 ppc64_elf_unhandled_reloc
, /* special_function */
938 "R_PPC64_PLT64", /* name */
939 FALSE
, /* partial_inplace */
941 ONES (64), /* dst_mask */
942 FALSE
), /* pcrel_offset */
944 /* 64-bit PC relative relocation to the symbol's procedure linkage
946 /* FIXME: R_PPC64_PLTREL64 not supported. */
947 HOWTO (R_PPC64_PLTREL64
, /* type */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
951 TRUE
, /* pc_relative */
953 complain_overflow_dont
, /* complain_on_overflow */
954 ppc64_elf_unhandled_reloc
, /* special_function */
955 "R_PPC64_PLTREL64", /* name */
956 FALSE
, /* partial_inplace */
958 ONES (64), /* dst_mask */
959 TRUE
), /* pcrel_offset */
961 /* 16 bit TOC-relative relocation. */
963 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
964 HOWTO (R_PPC64_TOC16
, /* type */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 FALSE
, /* pc_relative */
970 complain_overflow_signed
, /* complain_on_overflow */
971 ppc64_elf_toc_reloc
, /* special_function */
972 "R_PPC64_TOC16", /* name */
973 FALSE
, /* partial_inplace */
975 0xffff, /* dst_mask */
976 FALSE
), /* pcrel_offset */
978 /* 16 bit TOC-relative relocation without overflow. */
980 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
981 HOWTO (R_PPC64_TOC16_LO
, /* type */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE
, /* pc_relative */
987 complain_overflow_dont
, /* complain_on_overflow */
988 ppc64_elf_toc_reloc
, /* special_function */
989 "R_PPC64_TOC16_LO", /* name */
990 FALSE
, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE
), /* pcrel_offset */
995 /* 16 bit TOC-relative relocation, high 16 bits. */
997 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
998 HOWTO (R_PPC64_TOC16_HI
, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE
, /* pc_relative */
1004 complain_overflow_signed
, /* complain_on_overflow */
1005 ppc64_elf_toc_reloc
, /* special_function */
1006 "R_PPC64_TOC16_HI", /* name */
1007 FALSE
, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE
), /* pcrel_offset */
1012 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1013 contents of the low 16 bits, treated as a signed number, is
1016 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1017 HOWTO (R_PPC64_TOC16_HA
, /* type */
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_signed
, /* complain_on_overflow */
1024 ppc64_elf_toc_ha_reloc
, /* special_function */
1025 "R_PPC64_TOC16_HA", /* name */
1026 FALSE
, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1031 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1033 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1034 HOWTO (R_PPC64_TOC
, /* type */
1036 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1038 FALSE
, /* pc_relative */
1040 complain_overflow_dont
, /* complain_on_overflow */
1041 ppc64_elf_toc64_reloc
, /* special_function */
1042 "R_PPC64_TOC", /* name */
1043 FALSE
, /* partial_inplace */
1045 ONES (64), /* dst_mask */
1046 FALSE
), /* pcrel_offset */
1048 /* Like R_PPC64_GOT16, but also informs the link editor that the
1049 value to relocate may (!) refer to a PLT entry which the link
1050 editor (a) may replace with the symbol value. If the link editor
1051 is unable to fully resolve the symbol, it may (b) create a PLT
1052 entry and store the address to the new PLT entry in the GOT.
1053 This permits lazy resolution of function symbols at run time.
1054 The link editor may also skip all of this and just (c) emit a
1055 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1056 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16
, /* type */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_signed
, /* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc
, /* special_function */
1065 "R_PPC64_PLTGOT16", /* name */
1066 FALSE
, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Like R_PPC64_PLTGOT16, but without overflow. */
1072 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1073 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_dont
, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc
, /* special_function */
1081 "R_PPC64_PLTGOT16_LO", /* name */
1082 FALSE
, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1088 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1089 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_signed
, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc
, /* special_function */
1097 "R_PPC64_PLTGOT16_HI", /* name */
1098 FALSE
, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1103 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1104 1 if the contents of the low 16 bits, treated as a signed number,
1106 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1107 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1108 16, /* rightshift */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE
, /* pc_relative */
1113 complain_overflow_signed
, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc
, /* special_function */
1115 "R_PPC64_PLTGOT16_HA", /* name */
1116 FALSE
, /* partial_inplace */
1118 0xffff, /* dst_mask */
1119 FALSE
), /* pcrel_offset */
1121 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE
, /* pc_relative */
1128 complain_overflow_signed
, /* complain_on_overflow */
1129 bfd_elf_generic_reloc
, /* special_function */
1130 "R_PPC64_ADDR16_DS", /* name */
1131 FALSE
, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE
), /* pcrel_offset */
1136 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE
, /* pc_relative */
1143 complain_overflow_dont
,/* complain_on_overflow */
1144 bfd_elf_generic_reloc
, /* special_function */
1145 "R_PPC64_ADDR16_LO_DS",/* name */
1146 FALSE
, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE
), /* pcrel_offset */
1151 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_GOT16_DS
, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE
, /* pc_relative */
1158 complain_overflow_signed
, /* complain_on_overflow */
1159 ppc64_elf_unhandled_reloc
, /* special_function */
1160 "R_PPC64_GOT16_DS", /* name */
1161 FALSE
, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE
), /* pcrel_offset */
1166 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE
, /* pc_relative */
1173 complain_overflow_dont
, /* complain_on_overflow */
1174 ppc64_elf_unhandled_reloc
, /* special_function */
1175 "R_PPC64_GOT16_LO_DS", /* name */
1176 FALSE
, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE
), /* pcrel_offset */
1181 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1182 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE
, /* pc_relative */
1188 complain_overflow_dont
, /* complain_on_overflow */
1189 ppc64_elf_unhandled_reloc
, /* special_function */
1190 "R_PPC64_PLT16_LO_DS", /* name */
1191 FALSE
, /* partial_inplace */
1193 0xfffc, /* dst_mask */
1194 FALSE
), /* pcrel_offset */
1196 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1197 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE
, /* pc_relative */
1203 complain_overflow_signed
, /* complain_on_overflow */
1204 ppc64_elf_sectoff_reloc
, /* special_function */
1205 "R_PPC64_SECTOFF_DS", /* name */
1206 FALSE
, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE
), /* pcrel_offset */
1211 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1212 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_dont
, /* complain_on_overflow */
1219 ppc64_elf_sectoff_reloc
, /* special_function */
1220 "R_PPC64_SECTOFF_LO_DS",/* name */
1221 FALSE
, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1227 HOWTO (R_PPC64_TOC16_DS
, /* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_signed
, /* complain_on_overflow */
1234 ppc64_elf_toc_reloc
, /* special_function */
1235 "R_PPC64_TOC16_DS", /* name */
1236 FALSE
, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1242 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 ppc64_elf_toc_reloc
, /* special_function */
1250 "R_PPC64_TOC16_LO_DS", /* name */
1251 FALSE
, /* partial_inplace */
1253 0xfffc, /* dst_mask */
1254 FALSE
), /* pcrel_offset */
1256 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1257 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1258 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE
, /* pc_relative */
1264 complain_overflow_signed
, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc
, /* special_function */
1266 "R_PPC64_PLTGOT16_DS", /* name */
1267 FALSE
, /* partial_inplace */
1269 0xfffc, /* dst_mask */
1270 FALSE
), /* pcrel_offset */
1272 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1273 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1274 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE
, /* pc_relative */
1280 complain_overflow_dont
, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc
, /* special_function */
1282 "R_PPC64_PLTGOT16_LO_DS",/* name */
1283 FALSE
, /* partial_inplace */
1285 0xfffc, /* dst_mask */
1286 FALSE
), /* pcrel_offset */
1288 /* Marker relocs for TLS. */
1291 2, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE
, /* pc_relative */
1295 complain_overflow_dont
, /* complain_on_overflow */
1296 bfd_elf_generic_reloc
, /* special_function */
1297 "R_PPC64_TLS", /* name */
1298 FALSE
, /* partial_inplace */
1301 FALSE
), /* pcrel_offset */
1303 HOWTO (R_PPC64_TLSGD
,
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE
, /* pc_relative */
1309 complain_overflow_dont
, /* complain_on_overflow */
1310 bfd_elf_generic_reloc
, /* special_function */
1311 "R_PPC64_TLSGD", /* name */
1312 FALSE
, /* partial_inplace */
1315 FALSE
), /* pcrel_offset */
1317 HOWTO (R_PPC64_TLSLD
,
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE
, /* pc_relative */
1323 complain_overflow_dont
, /* complain_on_overflow */
1324 bfd_elf_generic_reloc
, /* special_function */
1325 "R_PPC64_TLSLD", /* name */
1326 FALSE
, /* partial_inplace */
1329 FALSE
), /* pcrel_offset */
1331 HOWTO (R_PPC64_TOCSAVE
,
1333 2, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_dont
, /* complain_on_overflow */
1338 bfd_elf_generic_reloc
, /* special_function */
1339 "R_PPC64_TOCSAVE", /* name */
1340 FALSE
, /* partial_inplace */
1343 FALSE
), /* pcrel_offset */
1345 /* Computes the load module index of the load module that contains the
1346 definition of its TLS sym. */
1347 HOWTO (R_PPC64_DTPMOD64
,
1349 4, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE
, /* pc_relative */
1353 complain_overflow_dont
, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc
, /* special_function */
1355 "R_PPC64_DTPMOD64", /* name */
1356 FALSE
, /* partial_inplace */
1358 ONES (64), /* dst_mask */
1359 FALSE
), /* pcrel_offset */
1361 /* Computes a dtv-relative displacement, the difference between the value
1362 of sym+add and the base address of the thread-local storage block that
1363 contains the definition of sym, minus 0x8000. */
1364 HOWTO (R_PPC64_DTPREL64
,
1366 4, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE
, /* pc_relative */
1370 complain_overflow_dont
, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc
, /* special_function */
1372 "R_PPC64_DTPREL64", /* name */
1373 FALSE
, /* partial_inplace */
1375 ONES (64), /* dst_mask */
1376 FALSE
), /* pcrel_offset */
1378 /* A 16 bit dtprel reloc. */
1379 HOWTO (R_PPC64_DTPREL16
,
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE
, /* pc_relative */
1385 complain_overflow_signed
, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc
, /* special_function */
1387 "R_PPC64_DTPREL16", /* name */
1388 FALSE
, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE
), /* pcrel_offset */
1393 /* Like DTPREL16, but no overflow. */
1394 HOWTO (R_PPC64_DTPREL16_LO
,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE
, /* pc_relative */
1400 complain_overflow_dont
, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc
, /* special_function */
1402 "R_PPC64_DTPREL16_LO", /* name */
1403 FALSE
, /* partial_inplace */
1405 0xffff, /* dst_mask */
1406 FALSE
), /* pcrel_offset */
1408 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1409 HOWTO (R_PPC64_DTPREL16_HI
,
1410 16, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE
, /* pc_relative */
1415 complain_overflow_signed
, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc
, /* special_function */
1417 "R_PPC64_DTPREL16_HI", /* name */
1418 FALSE
, /* partial_inplace */
1420 0xffff, /* dst_mask */
1421 FALSE
), /* pcrel_offset */
1423 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1424 HOWTO (R_PPC64_DTPREL16_HA
,
1425 16, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE
, /* pc_relative */
1430 complain_overflow_signed
, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc
, /* special_function */
1432 "R_PPC64_DTPREL16_HA", /* name */
1433 FALSE
, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 FALSE
), /* pcrel_offset */
1438 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1439 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1440 32, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE
, /* pc_relative */
1445 complain_overflow_dont
, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc
, /* special_function */
1447 "R_PPC64_DTPREL16_HIGHER", /* name */
1448 FALSE
, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE
), /* pcrel_offset */
1453 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1454 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1455 32, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE
, /* pc_relative */
1460 complain_overflow_dont
, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc
, /* special_function */
1462 "R_PPC64_DTPREL16_HIGHERA", /* name */
1463 FALSE
, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE
), /* pcrel_offset */
1468 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1470 48, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE
, /* pc_relative */
1475 complain_overflow_dont
, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc
, /* special_function */
1477 "R_PPC64_DTPREL16_HIGHEST", /* name */
1478 FALSE
, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE
), /* pcrel_offset */
1483 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1485 48, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_dont
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1493 FALSE
, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* Like DTPREL16, but for insns with a DS field. */
1499 HOWTO (R_PPC64_DTPREL16_DS
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_signed
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_DTPREL16_DS", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xfffc, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like DTPREL16_DS, but no overflow. */
1514 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_DTPREL16_LO_DS", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xfffc, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Computes a tp-relative displacement, the difference between the value of
1529 sym+add and the value of the thread pointer (r13). */
1530 HOWTO (R_PPC64_TPREL64
,
1532 4, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE
, /* pc_relative */
1536 complain_overflow_dont
, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc
, /* special_function */
1538 "R_PPC64_TPREL64", /* name */
1539 FALSE
, /* partial_inplace */
1541 ONES (64), /* dst_mask */
1542 FALSE
), /* pcrel_offset */
1544 /* A 16 bit tprel reloc. */
1545 HOWTO (R_PPC64_TPREL16
,
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_signed
, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc
, /* special_function */
1553 "R_PPC64_TPREL16", /* name */
1554 FALSE
, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 /* Like TPREL16, but no overflow. */
1560 HOWTO (R_PPC64_TPREL16_LO
,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_dont
, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc
, /* special_function */
1568 "R_PPC64_TPREL16_LO", /* name */
1569 FALSE
, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 /* Like TPREL16_LO, but next higher group of 16 bits. */
1575 HOWTO (R_PPC64_TPREL16_HI
,
1576 16, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE
, /* pc_relative */
1581 complain_overflow_signed
, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc
, /* special_function */
1583 "R_PPC64_TPREL16_HI", /* name */
1584 FALSE
, /* partial_inplace */
1586 0xffff, /* dst_mask */
1587 FALSE
), /* pcrel_offset */
1589 /* Like TPREL16_HI, but adjust for low 16 bits. */
1590 HOWTO (R_PPC64_TPREL16_HA
,
1591 16, /* rightshift */
1592 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE
, /* pc_relative */
1596 complain_overflow_signed
, /* complain_on_overflow */
1597 ppc64_elf_unhandled_reloc
, /* special_function */
1598 "R_PPC64_TPREL16_HA", /* name */
1599 FALSE
, /* partial_inplace */
1601 0xffff, /* dst_mask */
1602 FALSE
), /* pcrel_offset */
1604 /* Like TPREL16_HI, but next higher group of 16 bits. */
1605 HOWTO (R_PPC64_TPREL16_HIGHER
,
1606 32, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE
, /* pc_relative */
1611 complain_overflow_dont
, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc
, /* special_function */
1613 "R_PPC64_TPREL16_HIGHER", /* name */
1614 FALSE
, /* partial_inplace */
1616 0xffff, /* dst_mask */
1617 FALSE
), /* pcrel_offset */
1619 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1620 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1621 32, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE
, /* pc_relative */
1626 complain_overflow_dont
, /* complain_on_overflow */
1627 ppc64_elf_unhandled_reloc
, /* special_function */
1628 "R_PPC64_TPREL16_HIGHERA", /* name */
1629 FALSE
, /* partial_inplace */
1631 0xffff, /* dst_mask */
1632 FALSE
), /* pcrel_offset */
1634 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1636 48, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc
, /* special_function */
1643 "R_PPC64_TPREL16_HIGHEST", /* name */
1644 FALSE
, /* partial_inplace */
1646 0xffff, /* dst_mask */
1647 FALSE
), /* pcrel_offset */
1649 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1651 48, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE
, /* pc_relative */
1656 complain_overflow_dont
, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc
, /* special_function */
1658 "R_PPC64_TPREL16_HIGHESTA", /* name */
1659 FALSE
, /* partial_inplace */
1661 0xffff, /* dst_mask */
1662 FALSE
), /* pcrel_offset */
1664 /* Like TPREL16, but for insns with a DS field. */
1665 HOWTO (R_PPC64_TPREL16_DS
,
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_signed
, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc
, /* special_function */
1673 "R_PPC64_TPREL16_DS", /* name */
1674 FALSE
, /* partial_inplace */
1676 0xfffc, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 /* Like TPREL16_DS, but no overflow. */
1680 HOWTO (R_PPC64_TPREL16_LO_DS
,
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 FALSE
, /* pc_relative */
1686 complain_overflow_dont
, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc
, /* special_function */
1688 "R_PPC64_TPREL16_LO_DS", /* name */
1689 FALSE
, /* partial_inplace */
1691 0xfffc, /* dst_mask */
1692 FALSE
), /* pcrel_offset */
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1696 to the first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSGD16
,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE
, /* pc_relative */
1703 complain_overflow_signed
, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc
, /* special_function */
1705 "R_PPC64_GOT_TLSGD16", /* name */
1706 FALSE
, /* partial_inplace */
1708 0xffff, /* dst_mask */
1709 FALSE
), /* pcrel_offset */
1711 /* Like GOT_TLSGD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE
, /* pc_relative */
1718 complain_overflow_dont
, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc
, /* special_function */
1720 "R_PPC64_GOT_TLSGD16_LO", /* name */
1721 FALSE
, /* partial_inplace */
1723 0xffff, /* dst_mask */
1724 FALSE
), /* pcrel_offset */
1726 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE
, /* pc_relative */
1733 complain_overflow_signed
, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc
, /* special_function */
1735 "R_PPC64_GOT_TLSGD16_HI", /* name */
1736 FALSE
, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE
), /* pcrel_offset */
1741 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE
, /* pc_relative */
1748 complain_overflow_signed
, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc
, /* special_function */
1750 "R_PPC64_GOT_TLSGD16_HA", /* name */
1751 FALSE
, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE
), /* pcrel_offset */
1756 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1757 with values (sym+add)@dtpmod and zero, and computes the offset to the
1758 first entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_TLSLD16
,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE
, /* pc_relative */
1765 complain_overflow_signed
, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc
, /* special_function */
1767 "R_PPC64_GOT_TLSLD16", /* name */
1768 FALSE
, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE
), /* pcrel_offset */
1773 /* Like GOT_TLSLD16, but no overflow. */
1774 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_dont
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_TLSLD16_LO", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xffff, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE
, /* pc_relative */
1795 complain_overflow_signed
, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc
, /* special_function */
1797 "R_PPC64_GOT_TLSLD16_HI", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_signed
, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc
, /* special_function */
1812 "R_PPC64_GOT_TLSLD16_HA", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1819 the offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE
, /* pc_relative */
1826 complain_overflow_signed
, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc
, /* special_function */
1828 "R_PPC64_GOT_DTPREL16_DS", /* name */
1829 FALSE
, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE
), /* pcrel_offset */
1834 /* Like GOT_DTPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_dont
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_signed
, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc
, /* special_function */
1858 "R_PPC64_GOT_DTPREL16_HI", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE
, /* pc_relative */
1871 complain_overflow_signed
, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc
, /* special_function */
1873 "R_PPC64_GOT_DTPREL16_HA", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1880 offset to the entry relative to the TOC base (r2). */
1881 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1883 1, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE
, /* pc_relative */
1887 complain_overflow_signed
, /* complain_on_overflow */
1888 ppc64_elf_unhandled_reloc
, /* special_function */
1889 "R_PPC64_GOT_TPREL16_DS", /* name */
1890 FALSE
, /* partial_inplace */
1892 0xfffc, /* dst_mask */
1893 FALSE
), /* pcrel_offset */
1895 /* Like GOT_TPREL16_DS, but no overflow. */
1896 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1898 1, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE
, /* pc_relative */
1902 complain_overflow_dont
, /* complain_on_overflow */
1903 ppc64_elf_unhandled_reloc
, /* special_function */
1904 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1905 FALSE
, /* partial_inplace */
1907 0xfffc, /* dst_mask */
1908 FALSE
), /* pcrel_offset */
1910 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1911 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1912 16, /* rightshift */
1913 1, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE
, /* pc_relative */
1917 complain_overflow_signed
, /* complain_on_overflow */
1918 ppc64_elf_unhandled_reloc
, /* special_function */
1919 "R_PPC64_GOT_TPREL16_HI", /* name */
1920 FALSE
, /* partial_inplace */
1922 0xffff, /* dst_mask */
1923 FALSE
), /* pcrel_offset */
1925 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1926 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1927 16, /* rightshift */
1928 1, /* size (0 = byte, 1 = short, 2 = long) */
1930 FALSE
, /* pc_relative */
1932 complain_overflow_signed
, /* complain_on_overflow */
1933 ppc64_elf_unhandled_reloc
, /* special_function */
1934 "R_PPC64_GOT_TPREL16_HA", /* name */
1935 FALSE
, /* partial_inplace */
1937 0xffff, /* dst_mask */
1938 FALSE
), /* pcrel_offset */
1940 HOWTO (R_PPC64_JMP_IREL
, /* type */
1942 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1944 FALSE
, /* pc_relative */
1946 complain_overflow_dont
, /* complain_on_overflow */
1947 ppc64_elf_unhandled_reloc
, /* special_function */
1948 "R_PPC64_JMP_IREL", /* name */
1949 FALSE
, /* partial_inplace */
1952 FALSE
), /* pcrel_offset */
1954 HOWTO (R_PPC64_IRELATIVE
, /* type */
1956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1958 FALSE
, /* pc_relative */
1960 complain_overflow_dont
, /* complain_on_overflow */
1961 bfd_elf_generic_reloc
, /* special_function */
1962 "R_PPC64_IRELATIVE", /* name */
1963 FALSE
, /* partial_inplace */
1965 ONES (64), /* dst_mask */
1966 FALSE
), /* pcrel_offset */
1968 /* A 16 bit relative relocation. */
1969 HOWTO (R_PPC64_REL16
, /* type */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE
, /* pc_relative */
1975 complain_overflow_signed
, /* complain_on_overflow */
1976 bfd_elf_generic_reloc
, /* special_function */
1977 "R_PPC64_REL16", /* name */
1978 FALSE
, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE
), /* pcrel_offset */
1983 /* A 16 bit relative relocation without overflow. */
1984 HOWTO (R_PPC64_REL16_LO
, /* type */
1986 1, /* size (0 = byte, 1 = short, 2 = long) */
1988 TRUE
, /* pc_relative */
1990 complain_overflow_dont
,/* complain_on_overflow */
1991 bfd_elf_generic_reloc
, /* special_function */
1992 "R_PPC64_REL16_LO", /* name */
1993 FALSE
, /* partial_inplace */
1995 0xffff, /* dst_mask */
1996 TRUE
), /* pcrel_offset */
1998 /* The high order 16 bits of a relative address. */
1999 HOWTO (R_PPC64_REL16_HI
, /* type */
2000 16, /* rightshift */
2001 1, /* size (0 = byte, 1 = short, 2 = long) */
2003 TRUE
, /* pc_relative */
2005 complain_overflow_signed
, /* complain_on_overflow */
2006 bfd_elf_generic_reloc
, /* special_function */
2007 "R_PPC64_REL16_HI", /* name */
2008 FALSE
, /* partial_inplace */
2010 0xffff, /* dst_mask */
2011 TRUE
), /* pcrel_offset */
2013 /* The high order 16 bits of a relative address, plus 1 if the contents of
2014 the low 16 bits, treated as a signed number, is negative. */
2015 HOWTO (R_PPC64_REL16_HA
, /* type */
2016 16, /* rightshift */
2017 1, /* size (0 = byte, 1 = short, 2 = long) */
2019 TRUE
, /* pc_relative */
2021 complain_overflow_signed
, /* complain_on_overflow */
2022 ppc64_elf_ha_reloc
, /* special_function */
2023 "R_PPC64_REL16_HA", /* name */
2024 FALSE
, /* partial_inplace */
2026 0xffff, /* dst_mask */
2027 TRUE
), /* pcrel_offset */
2029 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2030 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2031 16, /* rightshift */
2032 2, /* size (0 = byte, 1 = short, 2 = long) */
2034 TRUE
, /* pc_relative */
2036 complain_overflow_signed
, /* complain_on_overflow */
2037 ppc64_elf_ha_reloc
, /* special_function */
2038 "R_PPC64_REL16DX_HA", /* name */
2039 FALSE
, /* partial_inplace */
2041 0x1fffc1, /* dst_mask */
2042 TRUE
), /* pcrel_offset */
2044 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2045 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2046 16, /* rightshift */
2047 1, /* size (0 = byte, 1 = short, 2 = long) */
2049 FALSE
, /* pc_relative */
2051 complain_overflow_dont
, /* complain_on_overflow */
2052 bfd_elf_generic_reloc
, /* special_function */
2053 "R_PPC64_ADDR16_HIGH", /* name */
2054 FALSE
, /* partial_inplace */
2056 0xffff, /* dst_mask */
2057 FALSE
), /* pcrel_offset */
2059 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2060 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2061 16, /* rightshift */
2062 1, /* size (0 = byte, 1 = short, 2 = long) */
2064 FALSE
, /* pc_relative */
2066 complain_overflow_dont
, /* complain_on_overflow */
2067 ppc64_elf_ha_reloc
, /* special_function */
2068 "R_PPC64_ADDR16_HIGHA", /* name */
2069 FALSE
, /* partial_inplace */
2071 0xffff, /* dst_mask */
2072 FALSE
), /* pcrel_offset */
2074 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2075 HOWTO (R_PPC64_DTPREL16_HIGH
,
2076 16, /* rightshift */
2077 1, /* size (0 = byte, 1 = short, 2 = long) */
2079 FALSE
, /* pc_relative */
2081 complain_overflow_dont
, /* complain_on_overflow */
2082 ppc64_elf_unhandled_reloc
, /* special_function */
2083 "R_PPC64_DTPREL16_HIGH", /* name */
2084 FALSE
, /* partial_inplace */
2086 0xffff, /* dst_mask */
2087 FALSE
), /* pcrel_offset */
2089 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2090 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2091 16, /* rightshift */
2092 1, /* size (0 = byte, 1 = short, 2 = long) */
2094 FALSE
, /* pc_relative */
2096 complain_overflow_dont
, /* complain_on_overflow */
2097 ppc64_elf_unhandled_reloc
, /* special_function */
2098 "R_PPC64_DTPREL16_HIGHA", /* name */
2099 FALSE
, /* partial_inplace */
2101 0xffff, /* dst_mask */
2102 FALSE
), /* pcrel_offset */
2104 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2105 HOWTO (R_PPC64_TPREL16_HIGH
,
2106 16, /* rightshift */
2107 1, /* size (0 = byte, 1 = short, 2 = long) */
2109 FALSE
, /* pc_relative */
2111 complain_overflow_dont
, /* complain_on_overflow */
2112 ppc64_elf_unhandled_reloc
, /* special_function */
2113 "R_PPC64_TPREL16_HIGH", /* name */
2114 FALSE
, /* partial_inplace */
2116 0xffff, /* dst_mask */
2117 FALSE
), /* pcrel_offset */
2119 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2120 HOWTO (R_PPC64_TPREL16_HIGHA
,
2121 16, /* rightshift */
2122 1, /* size (0 = byte, 1 = short, 2 = long) */
2124 FALSE
, /* pc_relative */
2126 complain_overflow_dont
, /* complain_on_overflow */
2127 ppc64_elf_unhandled_reloc
, /* special_function */
2128 "R_PPC64_TPREL16_HIGHA", /* name */
2129 FALSE
, /* partial_inplace */
2131 0xffff, /* dst_mask */
2132 FALSE
), /* pcrel_offset */
2134 /* Marker reloc on ELFv2 large-model function entry. */
2135 HOWTO (R_PPC64_ENTRY
,
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2139 FALSE
, /* pc_relative */
2141 complain_overflow_dont
, /* complain_on_overflow */
2142 bfd_elf_generic_reloc
, /* special_function */
2143 "R_PPC64_ENTRY", /* name */
2144 FALSE
, /* partial_inplace */
2147 FALSE
), /* pcrel_offset */
2149 /* Like ADDR64, but use local entry point of function. */
2150 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2152 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2154 FALSE
, /* pc_relative */
2156 complain_overflow_dont
, /* complain_on_overflow */
2157 bfd_elf_generic_reloc
, /* special_function */
2158 "R_PPC64_ADDR64_LOCAL", /* name */
2159 FALSE
, /* partial_inplace */
2161 ONES (64), /* dst_mask */
2162 FALSE
), /* pcrel_offset */
2164 /* GNU extension to record C++ vtable hierarchy. */
2165 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2167 0, /* size (0 = byte, 1 = short, 2 = long) */
2169 FALSE
, /* pc_relative */
2171 complain_overflow_dont
, /* complain_on_overflow */
2172 NULL
, /* special_function */
2173 "R_PPC64_GNU_VTINHERIT", /* name */
2174 FALSE
, /* partial_inplace */
2177 FALSE
), /* pcrel_offset */
2179 /* GNU extension to record C++ vtable member usage. */
2180 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2182 0, /* size (0 = byte, 1 = short, 2 = long) */
2184 FALSE
, /* pc_relative */
2186 complain_overflow_dont
, /* complain_on_overflow */
2187 NULL
, /* special_function */
2188 "R_PPC64_GNU_VTENTRY", /* name */
2189 FALSE
, /* partial_inplace */
2192 FALSE
), /* pcrel_offset */
2196 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2200 ppc_howto_init (void)
2202 unsigned int i
, type
;
2204 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2206 type
= ppc64_elf_howto_raw
[i
].type
;
2207 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2208 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2212 static reloc_howto_type
*
2213 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2214 bfd_reloc_code_real_type code
)
2216 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2218 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2219 /* Initialize howto table if needed. */
2227 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2229 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2231 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2233 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2235 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2237 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2239 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2241 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2243 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2245 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2247 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2249 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2251 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2253 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2255 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2257 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2259 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2261 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2263 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2265 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2267 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2269 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2271 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2273 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2275 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2277 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2279 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2281 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2283 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2285 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2287 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2289 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2291 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2293 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2295 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2297 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2299 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2301 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2303 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2305 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2307 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2309 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2311 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2313 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2315 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2317 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2319 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2321 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2323 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2325 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2327 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2329 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2331 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2333 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2335 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2337 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2339 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2341 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2343 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2345 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2349 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2351 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2353 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2355 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2357 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2359 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2361 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2363 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2365 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2367 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2369 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2371 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2373 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2375 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2377 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2379 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2383 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2385 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2387 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2389 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2393 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2395 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2397 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2401 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2403 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2405 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2407 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2409 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2411 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2413 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2417 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2419 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2421 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2423 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2429 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2431 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2433 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2441 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2443 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2445 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2447 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2449 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2451 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2453 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2455 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2457 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2461 return ppc64_elf_howto_table
[r
];
2464 static reloc_howto_type
*
2465 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2470 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2471 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2472 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2473 return &ppc64_elf_howto_raw
[i
];
2478 /* Set the howto pointer for a PowerPC ELF reloc. */
2481 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2482 Elf_Internal_Rela
*dst
)
2486 /* Initialize howto table if needed. */
2487 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2490 type
= ELF64_R_TYPE (dst
->r_info
);
2491 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2493 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2495 type
= R_PPC64_NONE
;
2497 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2500 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2502 static bfd_reloc_status_type
2503 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2504 void *data
, asection
*input_section
,
2505 bfd
*output_bfd
, char **error_message
)
2507 enum elf_ppc64_reloc_type r_type
;
2509 bfd_size_type octets
;
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd
!= NULL
)
2516 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2517 input_section
, output_bfd
, error_message
);
2519 /* Adjust the addend for sign extension of the low 16 bits.
2520 We won't actually be using the low 16 bits, so trashing them
2522 reloc_entry
->addend
+= 0x8000;
2523 r_type
= reloc_entry
->howto
->type
;
2524 if (r_type
!= R_PPC64_REL16DX_HA
)
2525 return bfd_reloc_continue
;
2528 if (!bfd_is_com_section (symbol
->section
))
2529 value
= symbol
->value
;
2530 value
+= (reloc_entry
->addend
2531 + symbol
->section
->output_offset
2532 + symbol
->section
->output_section
->vma
);
2533 value
-= (reloc_entry
->address
2534 + input_section
->output_offset
2535 + input_section
->output_section
->vma
);
2536 value
= (bfd_signed_vma
) value
>> 16;
2538 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2539 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2541 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2542 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2543 if (value
+ 0x8000 > 0xffff)
2544 return bfd_reloc_overflow
;
2545 return bfd_reloc_ok
;
2548 static bfd_reloc_status_type
2549 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2550 void *data
, asection
*input_section
,
2551 bfd
*output_bfd
, char **error_message
)
2553 if (output_bfd
!= NULL
)
2554 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2555 input_section
, output_bfd
, error_message
);
2557 if (strcmp (symbol
->section
->name
, ".opd") == 0
2558 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2560 bfd_vma dest
= opd_entry_value (symbol
->section
,
2561 symbol
->value
+ reloc_entry
->addend
,
2563 if (dest
!= (bfd_vma
) -1)
2564 reloc_entry
->addend
= dest
- (symbol
->value
2565 + symbol
->section
->output_section
->vma
2566 + symbol
->section
->output_offset
);
2570 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2572 if (symbol
->section
->owner
!= abfd
2573 && abiversion (symbol
->section
->owner
) >= 2)
2577 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2579 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2581 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2583 elfsym
= (elf_symbol_type
*) symdef
;
2589 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2591 return bfd_reloc_continue
;
2594 static bfd_reloc_status_type
2595 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2596 void *data
, asection
*input_section
,
2597 bfd
*output_bfd
, char **error_message
)
2600 enum elf_ppc64_reloc_type r_type
;
2601 bfd_size_type octets
;
2602 /* Assume 'at' branch hints. */
2603 bfd_boolean is_isa_v2
= TRUE
;
2605 /* If this is a relocatable link (output_bfd test tells us), just
2606 call the generic function. Any adjustment will be done at final
2608 if (output_bfd
!= NULL
)
2609 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2610 input_section
, output_bfd
, error_message
);
2612 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2613 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2614 insn
&= ~(0x01 << 21);
2615 r_type
= reloc_entry
->howto
->type
;
2616 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2617 || r_type
== R_PPC64_REL14_BRTAKEN
)
2618 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2622 /* Set 'a' bit. This is 0b00010 in BO field for branch
2623 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2624 for branch on CTR insns (BO == 1a00t or 1a01t). */
2625 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2627 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2637 if (!bfd_is_com_section (symbol
->section
))
2638 target
= symbol
->value
;
2639 target
+= symbol
->section
->output_section
->vma
;
2640 target
+= symbol
->section
->output_offset
;
2641 target
+= reloc_entry
->addend
;
2643 from
= (reloc_entry
->address
2644 + input_section
->output_offset
2645 + input_section
->output_section
->vma
);
2647 /* Invert 'y' bit if not the default. */
2648 if ((bfd_signed_vma
) (target
- from
) < 0)
2651 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2653 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2654 input_section
, output_bfd
, error_message
);
2657 static bfd_reloc_status_type
2658 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2659 void *data
, asection
*input_section
,
2660 bfd
*output_bfd
, char **error_message
)
2662 /* If this is a relocatable link (output_bfd test tells us), just
2663 call the generic function. Any adjustment will be done at final
2665 if (output_bfd
!= NULL
)
2666 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2667 input_section
, output_bfd
, error_message
);
2669 /* Subtract the symbol section base address. */
2670 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2671 return bfd_reloc_continue
;
2674 static bfd_reloc_status_type
2675 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2676 void *data
, asection
*input_section
,
2677 bfd
*output_bfd
, char **error_message
)
2679 /* If this is a relocatable link (output_bfd test tells us), just
2680 call the generic function. Any adjustment will be done at final
2682 if (output_bfd
!= NULL
)
2683 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2684 input_section
, output_bfd
, error_message
);
2686 /* Subtract the symbol section base address. */
2687 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2689 /* Adjust the addend for sign extension of the low 16 bits. */
2690 reloc_entry
->addend
+= 0x8000;
2691 return bfd_reloc_continue
;
2694 static bfd_reloc_status_type
2695 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2696 void *data
, asection
*input_section
,
2697 bfd
*output_bfd
, char **error_message
)
2701 /* If this is a relocatable link (output_bfd test tells us), just
2702 call the generic function. Any adjustment will be done at final
2704 if (output_bfd
!= NULL
)
2705 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2706 input_section
, output_bfd
, error_message
);
2708 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2710 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2712 /* Subtract the TOC base address. */
2713 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2714 return bfd_reloc_continue
;
2717 static bfd_reloc_status_type
2718 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2719 void *data
, asection
*input_section
,
2720 bfd
*output_bfd
, char **error_message
)
2724 /* If this is a relocatable link (output_bfd test tells us), just
2725 call the generic function. Any adjustment will be done at final
2727 if (output_bfd
!= NULL
)
2728 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2729 input_section
, output_bfd
, error_message
);
2731 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2733 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2735 /* Subtract the TOC base address. */
2736 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2738 /* Adjust the addend for sign extension of the low 16 bits. */
2739 reloc_entry
->addend
+= 0x8000;
2740 return bfd_reloc_continue
;
2743 static bfd_reloc_status_type
2744 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2745 void *data
, asection
*input_section
,
2746 bfd
*output_bfd
, char **error_message
)
2749 bfd_size_type octets
;
2751 /* If this is a relocatable link (output_bfd test tells us), just
2752 call the generic function. Any adjustment will be done at final
2754 if (output_bfd
!= NULL
)
2755 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2756 input_section
, output_bfd
, error_message
);
2758 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2760 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2762 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2763 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2764 return bfd_reloc_ok
;
2767 static bfd_reloc_status_type
2768 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2769 void *data
, asection
*input_section
,
2770 bfd
*output_bfd
, char **error_message
)
2772 /* If this is a relocatable link (output_bfd test tells us), just
2773 call the generic function. Any adjustment will be done at final
2775 if (output_bfd
!= NULL
)
2776 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2777 input_section
, output_bfd
, error_message
);
2779 if (error_message
!= NULL
)
2781 static char buf
[60];
2782 sprintf (buf
, "generic linker can't handle %s",
2783 reloc_entry
->howto
->name
);
2784 *error_message
= buf
;
2786 return bfd_reloc_dangerous
;
2789 /* Track GOT entries needed for a given symbol. We might need more
2790 than one got entry per symbol. */
2793 struct got_entry
*next
;
2795 /* The symbol addend that we'll be placing in the GOT. */
2798 /* Unlike other ELF targets, we use separate GOT entries for the same
2799 symbol referenced from different input files. This is to support
2800 automatic multiple TOC/GOT sections, where the TOC base can vary
2801 from one input file to another. After partitioning into TOC groups
2802 we merge entries within the group.
2804 Point to the BFD owning this GOT entry. */
2807 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2808 TLS_TPREL or TLS_DTPREL for tls entries. */
2809 unsigned char tls_type
;
2811 /* Non-zero if got.ent points to real entry. */
2812 unsigned char is_indirect
;
2814 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2817 bfd_signed_vma refcount
;
2819 struct got_entry
*ent
;
2823 /* The same for PLT. */
2826 struct plt_entry
*next
;
2832 bfd_signed_vma refcount
;
2837 struct ppc64_elf_obj_tdata
2839 struct elf_obj_tdata elf
;
2841 /* Shortcuts to dynamic linker sections. */
2845 /* Used during garbage collection. We attach global symbols defined
2846 on removed .opd entries to this section so that the sym is removed. */
2847 asection
*deleted_section
;
2849 /* TLS local dynamic got entry handling. Support for multiple GOT
2850 sections means we potentially need one of these for each input bfd. */
2851 struct got_entry tlsld_got
;
2854 /* A copy of relocs before they are modified for --emit-relocs. */
2855 Elf_Internal_Rela
*relocs
;
2857 /* Section contents. */
2861 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2862 the reloc to be in the range -32768 to 32767. */
2863 unsigned int has_small_toc_reloc
: 1;
2865 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2866 instruction not one we handle. */
2867 unsigned int unexpected_toc_insn
: 1;
2870 #define ppc64_elf_tdata(bfd) \
2871 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2873 #define ppc64_tlsld_got(bfd) \
2874 (&ppc64_elf_tdata (bfd)->tlsld_got)
2876 #define is_ppc64_elf(bfd) \
2877 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2878 && elf_object_id (bfd) == PPC64_ELF_DATA)
2880 /* Override the generic function because we store some extras. */
2883 ppc64_elf_mkobject (bfd
*abfd
)
2885 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2889 /* Fix bad default arch selected for a 64 bit input bfd when the
2890 default is 32 bit. */
2893 ppc64_elf_object_p (bfd
*abfd
)
2895 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2897 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2899 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2901 /* Relies on arch after 32 bit default being 64 bit default. */
2902 abfd
->arch_info
= abfd
->arch_info
->next
;
2903 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2909 /* Support for core dump NOTE sections. */
2912 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2914 size_t offset
, size
;
2916 if (note
->descsz
!= 504)
2920 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2923 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2929 /* Make a ".reg/999" section. */
2930 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2931 size
, note
->descpos
+ offset
);
2935 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2937 if (note
->descsz
!= 136)
2940 elf_tdata (abfd
)->core
->pid
2941 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2942 elf_tdata (abfd
)->core
->program
2943 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2944 elf_tdata (abfd
)->core
->command
2945 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2951 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2964 va_start (ap
, note_type
);
2965 memset (data
, 0, sizeof (data
));
2966 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2967 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2969 return elfcore_write_note (abfd
, buf
, bufsiz
,
2970 "CORE", note_type
, data
, sizeof (data
));
2981 va_start (ap
, note_type
);
2982 memset (data
, 0, 112);
2983 pid
= va_arg (ap
, long);
2984 bfd_put_32 (abfd
, pid
, data
+ 32);
2985 cursig
= va_arg (ap
, int);
2986 bfd_put_16 (abfd
, cursig
, data
+ 12);
2987 greg
= va_arg (ap
, const void *);
2988 memcpy (data
+ 112, greg
, 384);
2989 memset (data
+ 496, 0, 8);
2991 return elfcore_write_note (abfd
, buf
, bufsiz
,
2992 "CORE", note_type
, data
, sizeof (data
));
2997 /* Add extra PPC sections. */
2999 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3001 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3002 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3003 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3004 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3005 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3006 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3007 { NULL
, 0, 0, 0, 0 }
3010 enum _ppc64_sec_type
{
3016 struct _ppc64_elf_section_data
3018 struct bfd_elf_section_data elf
;
3022 /* An array with one entry for each opd function descriptor,
3023 and some spares since opd entries may be either 16 or 24 bytes. */
3024 #define OPD_NDX(OFF) ((OFF) >> 4)
3025 struct _opd_sec_data
3027 /* Points to the function code section for local opd entries. */
3028 asection
**func_sec
;
3030 /* After editing .opd, adjust references to opd local syms. */
3034 /* An array for toc sections, indexed by offset/8. */
3035 struct _toc_sec_data
3037 /* Specifies the relocation symbol index used at a given toc offset. */
3040 /* And the relocation addend. */
3045 enum _ppc64_sec_type sec_type
:2;
3047 /* Flag set when small branches are detected. Used to
3048 select suitable defaults for the stub group size. */
3049 unsigned int has_14bit_branch
:1;
3052 #define ppc64_elf_section_data(sec) \
3053 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3056 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3058 if (!sec
->used_by_bfd
)
3060 struct _ppc64_elf_section_data
*sdata
;
3061 bfd_size_type amt
= sizeof (*sdata
);
3063 sdata
= bfd_zalloc (abfd
, amt
);
3066 sec
->used_by_bfd
= sdata
;
3069 return _bfd_elf_new_section_hook (abfd
, sec
);
3072 static struct _opd_sec_data
*
3073 get_opd_info (asection
* sec
)
3076 && ppc64_elf_section_data (sec
) != NULL
3077 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3078 return &ppc64_elf_section_data (sec
)->u
.opd
;
3082 /* Parameters for the qsort hook. */
3083 static bfd_boolean synthetic_relocatable
;
3085 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3088 compare_symbols (const void *ap
, const void *bp
)
3090 const asymbol
*a
= * (const asymbol
**) ap
;
3091 const asymbol
*b
= * (const asymbol
**) bp
;
3093 /* Section symbols first. */
3094 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3096 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3099 /* then .opd symbols. */
3100 if (strcmp (a
->section
->name
, ".opd") == 0
3101 && strcmp (b
->section
->name
, ".opd") != 0)
3103 if (strcmp (a
->section
->name
, ".opd") != 0
3104 && strcmp (b
->section
->name
, ".opd") == 0)
3107 /* then other code symbols. */
3108 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3109 == (SEC_CODE
| SEC_ALLOC
)
3110 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3111 != (SEC_CODE
| SEC_ALLOC
))
3114 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3115 != (SEC_CODE
| SEC_ALLOC
)
3116 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3117 == (SEC_CODE
| SEC_ALLOC
))
3120 if (synthetic_relocatable
)
3122 if (a
->section
->id
< b
->section
->id
)
3125 if (a
->section
->id
> b
->section
->id
)
3129 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3132 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3135 /* For syms with the same value, prefer strong dynamic global function
3136 syms over other syms. */
3137 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3140 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3143 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3146 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3149 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3152 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3155 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3158 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3164 /* Search SYMS for a symbol of the given VALUE. */
3167 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3171 if (id
== (unsigned) -1)
3175 mid
= (lo
+ hi
) >> 1;
3176 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3178 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3188 mid
= (lo
+ hi
) >> 1;
3189 if (syms
[mid
]->section
->id
< id
)
3191 else if (syms
[mid
]->section
->id
> id
)
3193 else if (syms
[mid
]->value
< value
)
3195 else if (syms
[mid
]->value
> value
)
3205 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3207 bfd_vma vma
= *(bfd_vma
*) ptr
;
3208 return ((section
->flags
& SEC_ALLOC
) != 0
3209 && section
->vma
<= vma
3210 && vma
< section
->vma
+ section
->size
);
3213 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3214 entry syms. Also generate @plt symbols for the glink branch table.
3215 Returns count of synthetic symbols in RET or -1 on error. */
3218 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3219 long static_count
, asymbol
**static_syms
,
3220 long dyn_count
, asymbol
**dyn_syms
,
3227 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3228 asection
*opd
= NULL
;
3229 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3231 int abi
= abiversion (abfd
);
3237 opd
= bfd_get_section_by_name (abfd
, ".opd");
3238 if (opd
== NULL
&& abi
== 1)
3242 symcount
= static_count
;
3244 symcount
+= dyn_count
;
3248 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3252 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3254 /* Use both symbol tables. */
3255 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3256 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3258 else if (!relocatable
&& static_count
== 0)
3259 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3261 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3263 synthetic_relocatable
= relocatable
;
3264 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3266 if (!relocatable
&& symcount
> 1)
3269 /* Trim duplicate syms, since we may have merged the normal and
3270 dynamic symbols. Actually, we only care about syms that have
3271 different values, so trim any with the same value. */
3272 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3273 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3274 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3275 syms
[j
++] = syms
[i
];
3280 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3284 for (; i
< symcount
; ++i
)
3285 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3286 != (SEC_CODE
| SEC_ALLOC
))
3287 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3291 for (; i
< symcount
; ++i
)
3292 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3296 for (; i
< symcount
; ++i
)
3297 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3301 for (; i
< symcount
; ++i
)
3302 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3303 != (SEC_CODE
| SEC_ALLOC
))
3311 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3316 if (opdsymend
== secsymend
)
3319 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3320 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3324 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3331 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3335 while (r
< opd
->relocation
+ relcount
3336 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3339 if (r
== opd
->relocation
+ relcount
)
3342 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3345 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3348 sym
= *r
->sym_ptr_ptr
;
3349 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3350 sym
->section
->id
, sym
->value
+ r
->addend
))
3353 size
+= sizeof (asymbol
);
3354 size
+= strlen (syms
[i
]->name
) + 2;
3360 s
= *ret
= bfd_malloc (size
);
3367 names
= (char *) (s
+ count
);
3369 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3373 while (r
< opd
->relocation
+ relcount
3374 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3377 if (r
== opd
->relocation
+ relcount
)
3380 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3383 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3386 sym
= *r
->sym_ptr_ptr
;
3387 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3388 sym
->section
->id
, sym
->value
+ r
->addend
))
3393 s
->flags
|= BSF_SYNTHETIC
;
3394 s
->section
= sym
->section
;
3395 s
->value
= sym
->value
+ r
->addend
;
3398 len
= strlen (syms
[i
]->name
);
3399 memcpy (names
, syms
[i
]->name
, len
+ 1);
3401 /* Have udata.p point back to the original symbol this
3402 synthetic symbol was derived from. */
3403 s
->udata
.p
= syms
[i
];
3410 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3411 bfd_byte
*contents
= NULL
;
3414 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3415 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3418 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3420 free_contents_and_exit_err
:
3422 free_contents_and_exit
:
3429 for (i
= secsymend
; i
< opdsymend
; ++i
)
3433 /* Ignore bogus symbols. */
3434 if (syms
[i
]->value
> opd
->size
- 8)
3437 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3438 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3441 size
+= sizeof (asymbol
);
3442 size
+= strlen (syms
[i
]->name
) + 2;
3446 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3448 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3450 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3452 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3454 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3455 goto free_contents_and_exit_err
;
3457 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3458 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3461 extdynend
= extdyn
+ dynamic
->size
;
3462 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3464 Elf_Internal_Dyn dyn
;
3465 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3467 if (dyn
.d_tag
== DT_NULL
)
3470 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3472 /* The first glink stub starts at offset 32; see
3473 comment in ppc64_elf_finish_dynamic_sections. */
3474 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3475 /* The .glink section usually does not survive the final
3476 link; search for the section (usually .text) where the
3477 glink stubs now reside. */
3478 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3489 /* Determine __glink trampoline by reading the relative branch
3490 from the first glink stub. */
3492 unsigned int off
= 0;
3494 while (bfd_get_section_contents (abfd
, glink
, buf
,
3495 glink_vma
+ off
- glink
->vma
, 4))
3497 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3499 if ((insn
& ~0x3fffffc) == 0)
3501 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3510 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3512 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3515 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3516 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3517 goto free_contents_and_exit_err
;
3519 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3520 size
+= plt_count
* sizeof (asymbol
);
3522 p
= relplt
->relocation
;
3523 for (i
= 0; i
< plt_count
; i
++, p
++)
3525 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3527 size
+= sizeof ("+0x") - 1 + 16;
3533 goto free_contents_and_exit
;
3534 s
= *ret
= bfd_malloc (size
);
3536 goto free_contents_and_exit_err
;
3538 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3540 for (i
= secsymend
; i
< opdsymend
; ++i
)
3544 if (syms
[i
]->value
> opd
->size
- 8)
3547 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3548 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3552 asection
*sec
= abfd
->sections
;
3559 long mid
= (lo
+ hi
) >> 1;
3560 if (syms
[mid
]->section
->vma
< ent
)
3562 else if (syms
[mid
]->section
->vma
> ent
)
3566 sec
= syms
[mid
]->section
;
3571 if (lo
>= hi
&& lo
> codesecsym
)
3572 sec
= syms
[lo
- 1]->section
;
3574 for (; sec
!= NULL
; sec
= sec
->next
)
3578 /* SEC_LOAD may not be set if SEC is from a separate debug
3580 if ((sec
->flags
& SEC_ALLOC
) == 0)
3582 if ((sec
->flags
& SEC_CODE
) != 0)
3585 s
->flags
|= BSF_SYNTHETIC
;
3586 s
->value
= ent
- s
->section
->vma
;
3589 len
= strlen (syms
[i
]->name
);
3590 memcpy (names
, syms
[i
]->name
, len
+ 1);
3592 /* Have udata.p point back to the original symbol this
3593 synthetic symbol was derived from. */
3594 s
->udata
.p
= syms
[i
];
3600 if (glink
!= NULL
&& relplt
!= NULL
)
3604 /* Add a symbol for the main glink trampoline. */
3605 memset (s
, 0, sizeof *s
);
3607 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3609 s
->value
= resolv_vma
- glink
->vma
;
3611 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3612 names
+= sizeof ("__glink_PLTresolve");
3617 /* FIXME: It would be very much nicer to put sym@plt on the
3618 stub rather than on the glink branch table entry. The
3619 objdump disassembler would then use a sensible symbol
3620 name on plt calls. The difficulty in doing so is
3621 a) finding the stubs, and,
3622 b) matching stubs against plt entries, and,
3623 c) there can be multiple stubs for a given plt entry.
3625 Solving (a) could be done by code scanning, but older
3626 ppc64 binaries used different stubs to current code.
3627 (b) is the tricky one since you need to known the toc
3628 pointer for at least one function that uses a pic stub to
3629 be able to calculate the plt address referenced.
3630 (c) means gdb would need to set multiple breakpoints (or
3631 find the glink branch itself) when setting breakpoints
3632 for pending shared library loads. */
3633 p
= relplt
->relocation
;
3634 for (i
= 0; i
< plt_count
; i
++, p
++)
3638 *s
= **p
->sym_ptr_ptr
;
3639 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3640 we are defining a symbol, ensure one of them is set. */
3641 if ((s
->flags
& BSF_LOCAL
) == 0)
3642 s
->flags
|= BSF_GLOBAL
;
3643 s
->flags
|= BSF_SYNTHETIC
;
3645 s
->value
= glink_vma
- glink
->vma
;
3648 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3649 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3653 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3654 names
+= sizeof ("+0x") - 1;
3655 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3656 names
+= strlen (names
);
3658 memcpy (names
, "@plt", sizeof ("@plt"));
3659 names
+= sizeof ("@plt");
3679 /* The following functions are specific to the ELF linker, while
3680 functions above are used generally. Those named ppc64_elf_* are
3681 called by the main ELF linker code. They appear in this file more
3682 or less in the order in which they are called. eg.
3683 ppc64_elf_check_relocs is called early in the link process,
3684 ppc64_elf_finish_dynamic_sections is one of the last functions
3687 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3688 functions have both a function code symbol and a function descriptor
3689 symbol. A call to foo in a relocatable object file looks like:
3696 The function definition in another object file might be:
3700 . .quad .TOC.@tocbase
3706 When the linker resolves the call during a static link, the branch
3707 unsurprisingly just goes to .foo and the .opd information is unused.
3708 If the function definition is in a shared library, things are a little
3709 different: The call goes via a plt call stub, the opd information gets
3710 copied to the plt, and the linker patches the nop.
3718 . std 2,40(1) # in practice, the call stub
3719 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3720 . addi 11,11,Lfoo@toc@l # this is the general idea
3728 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3730 The "reloc ()" notation is supposed to indicate that the linker emits
3731 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3734 What are the difficulties here? Well, firstly, the relocations
3735 examined by the linker in check_relocs are against the function code
3736 sym .foo, while the dynamic relocation in the plt is emitted against
3737 the function descriptor symbol, foo. Somewhere along the line, we need
3738 to carefully copy dynamic link information from one symbol to the other.
3739 Secondly, the generic part of the elf linker will make .foo a dynamic
3740 symbol as is normal for most other backends. We need foo dynamic
3741 instead, at least for an application final link. However, when
3742 creating a shared library containing foo, we need to have both symbols
3743 dynamic so that references to .foo are satisfied during the early
3744 stages of linking. Otherwise the linker might decide to pull in a
3745 definition from some other object, eg. a static library.
3747 Update: As of August 2004, we support a new convention. Function
3748 calls may use the function descriptor symbol, ie. "bl foo". This
3749 behaves exactly as "bl .foo". */
3751 /* Of those relocs that might be copied as dynamic relocs, this function
3752 selects those that must be copied when linking a shared library,
3753 even when the symbol is local. */
3756 must_be_dyn_reloc (struct bfd_link_info
*info
,
3757 enum elf_ppc64_reloc_type r_type
)
3769 case R_PPC64_TPREL16
:
3770 case R_PPC64_TPREL16_LO
:
3771 case R_PPC64_TPREL16_HI
:
3772 case R_PPC64_TPREL16_HA
:
3773 case R_PPC64_TPREL16_DS
:
3774 case R_PPC64_TPREL16_LO_DS
:
3775 case R_PPC64_TPREL16_HIGH
:
3776 case R_PPC64_TPREL16_HIGHA
:
3777 case R_PPC64_TPREL16_HIGHER
:
3778 case R_PPC64_TPREL16_HIGHERA
:
3779 case R_PPC64_TPREL16_HIGHEST
:
3780 case R_PPC64_TPREL16_HIGHESTA
:
3781 case R_PPC64_TPREL64
:
3782 return !bfd_link_executable (info
);
3786 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3787 copying dynamic variables from a shared lib into an app's dynbss
3788 section, and instead use a dynamic relocation to point into the
3789 shared lib. With code that gcc generates, it's vital that this be
3790 enabled; In the PowerPC64 ABI, the address of a function is actually
3791 the address of a function descriptor, which resides in the .opd
3792 section. gcc uses the descriptor directly rather than going via the
3793 GOT as some other ABI's do, which means that initialized function
3794 pointers must reference the descriptor. Thus, a function pointer
3795 initialized to the address of a function in a shared library will
3796 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3797 redefines the function descriptor symbol to point to the copy. This
3798 presents a problem as a plt entry for that function is also
3799 initialized from the function descriptor symbol and the copy reloc
3800 may not be initialized first. */
3801 #define ELIMINATE_COPY_RELOCS 1
3803 /* Section name for stubs is the associated section name plus this
3805 #define STUB_SUFFIX ".stub"
3808 ppc_stub_long_branch:
3809 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3810 destination, but a 24 bit branch in a stub section will reach.
3813 ppc_stub_plt_branch:
3814 Similar to the above, but a 24 bit branch in the stub section won't
3815 reach its destination.
3816 . addis %r11,%r2,xxx@toc@ha
3817 . ld %r12,xxx@toc@l(%r11)
3822 Used to call a function in a shared library. If it so happens that
3823 the plt entry referenced crosses a 64k boundary, then an extra
3824 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3826 . addis %r11,%r2,xxx@toc@ha
3827 . ld %r12,xxx+0@toc@l(%r11)
3829 . ld %r2,xxx+8@toc@l(%r11)
3830 . ld %r11,xxx+16@toc@l(%r11)
3833 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3834 code to adjust the value and save r2 to support multiple toc sections.
3835 A ppc_stub_long_branch with an r2 offset looks like:
3837 . addis %r2,%r2,off@ha
3838 . addi %r2,%r2,off@l
3841 A ppc_stub_plt_branch with an r2 offset looks like:
3843 . addis %r11,%r2,xxx@toc@ha
3844 . ld %r12,xxx@toc@l(%r11)
3845 . addis %r2,%r2,off@ha
3846 . addi %r2,%r2,off@l
3850 In cases where the "addis" instruction would add zero, the "addis" is
3851 omitted and following instructions modified slightly in some cases.
3854 enum ppc_stub_type
{
3856 ppc_stub_long_branch
,
3857 ppc_stub_long_branch_r2off
,
3858 ppc_stub_plt_branch
,
3859 ppc_stub_plt_branch_r2off
,
3861 ppc_stub_plt_call_r2save
,
3862 ppc_stub_global_entry
,
3866 /* Information on stub grouping. */
3869 /* The stub section. */
3871 /* This is the section to which stubs in the group will be attached. */
3874 struct map_stub
*next
;
3875 /* Whether to emit a copy of register save/restore functions in this
3880 struct ppc_stub_hash_entry
{
3882 /* Base hash table entry structure. */
3883 struct bfd_hash_entry root
;
3885 enum ppc_stub_type stub_type
;
3887 /* Group information. */
3888 struct map_stub
*group
;
3890 /* Offset within stub_sec of the beginning of this stub. */
3891 bfd_vma stub_offset
;
3893 /* Given the symbol's value and its section we can determine its final
3894 value when building the stubs (so the stub knows where to jump. */
3895 bfd_vma target_value
;
3896 asection
*target_section
;
3898 /* The symbol table entry, if any, that this was derived from. */
3899 struct ppc_link_hash_entry
*h
;
3900 struct plt_entry
*plt_ent
;
3902 /* Symbol st_other. */
3903 unsigned char other
;
3906 struct ppc_branch_hash_entry
{
3908 /* Base hash table entry structure. */
3909 struct bfd_hash_entry root
;
3911 /* Offset within branch lookup table. */
3912 unsigned int offset
;
3914 /* Generation marker. */
3918 /* Used to track dynamic relocations for local symbols. */
3919 struct ppc_dyn_relocs
3921 struct ppc_dyn_relocs
*next
;
3923 /* The input section of the reloc. */
3926 /* Total number of relocs copied for the input section. */
3927 unsigned int count
: 31;
3929 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3930 unsigned int ifunc
: 1;
3933 struct ppc_link_hash_entry
3935 struct elf_link_hash_entry elf
;
3938 /* A pointer to the most recently used stub hash entry against this
3940 struct ppc_stub_hash_entry
*stub_cache
;
3942 /* A pointer to the next symbol starting with a '.' */
3943 struct ppc_link_hash_entry
*next_dot_sym
;
3946 /* Track dynamic relocs copied for this symbol. */
3947 struct elf_dyn_relocs
*dyn_relocs
;
3949 /* Link between function code and descriptor symbols. */
3950 struct ppc_link_hash_entry
*oh
;
3952 /* Flag function code and descriptor symbols. */
3953 unsigned int is_func
:1;
3954 unsigned int is_func_descriptor
:1;
3955 unsigned int fake
:1;
3957 /* Whether global opd/toc sym has been adjusted or not.
3958 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3959 should be set for all globals defined in any opd/toc section. */
3960 unsigned int adjust_done
:1;
3962 /* Set if we twiddled this symbol to weak at some stage. */
3963 unsigned int was_undefined
:1;
3965 /* Set if this is an out-of-line register save/restore function,
3966 with non-standard calling convention. */
3967 unsigned int save_res
:1;
3969 /* Contexts in which symbol is used in the GOT (or TOC).
3970 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3971 corresponding relocs are encountered during check_relocs.
3972 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3973 indicate the corresponding GOT entry type is not needed.
3974 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3975 a TPREL one. We use a separate flag rather than setting TPREL
3976 just for convenience in distinguishing the two cases. */
3977 #define TLS_GD 1 /* GD reloc. */
3978 #define TLS_LD 2 /* LD reloc. */
3979 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3980 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3981 #define TLS_TLS 16 /* Any TLS reloc. */
3982 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3983 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3984 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3985 unsigned char tls_mask
;
3988 /* ppc64 ELF linker hash table. */
3990 struct ppc_link_hash_table
3992 struct elf_link_hash_table elf
;
3994 /* The stub hash table. */
3995 struct bfd_hash_table stub_hash_table
;
3997 /* Another hash table for plt_branch stubs. */
3998 struct bfd_hash_table branch_hash_table
;
4000 /* Hash table for function prologue tocsave. */
4001 htab_t tocsave_htab
;
4003 /* Various options and other info passed from the linker. */
4004 struct ppc64_elf_params
*params
;
4006 /* The size of sec_info below. */
4007 unsigned int sec_info_arr_size
;
4009 /* Per-section array of extra section info. Done this way rather
4010 than as part of ppc64_elf_section_data so we have the info for
4011 non-ppc64 sections. */
4014 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4019 /* The section group that this section belongs to. */
4020 struct map_stub
*group
;
4021 /* A temp section list pointer. */
4026 /* Linked list of groups. */
4027 struct map_stub
*group
;
4029 /* Temp used when calculating TOC pointers. */
4032 asection
*toc_first_sec
;
4034 /* Used when adding symbols. */
4035 struct ppc_link_hash_entry
*dot_syms
;
4037 /* Shortcuts to get to dynamic linker sections. */
4044 asection
*glink_eh_frame
;
4046 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4047 struct ppc_link_hash_entry
*tls_get_addr
;
4048 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4050 /* The size of reliplt used by got entry relocs. */
4051 bfd_size_type got_reli_size
;
4054 unsigned long stub_count
[ppc_stub_global_entry
];
4056 /* Number of stubs against global syms. */
4057 unsigned long stub_globals
;
4059 /* Set if we're linking code with function descriptors. */
4060 unsigned int opd_abi
:1;
4062 /* Support for multiple toc sections. */
4063 unsigned int do_multi_toc
:1;
4064 unsigned int multi_toc_needed
:1;
4065 unsigned int second_toc_pass
:1;
4066 unsigned int do_toc_opt
:1;
4069 unsigned int stub_error
:1;
4071 /* Temp used by ppc64_elf_before_check_relocs. */
4072 unsigned int twiddled_syms
:1;
4074 /* Incremented every time we size stubs. */
4075 unsigned int stub_iteration
;
4077 /* Small local sym cache. */
4078 struct sym_cache sym_cache
;
4081 /* Rename some of the generic section flags to better document how they
4084 /* Nonzero if this section has TLS related relocations. */
4085 #define has_tls_reloc sec_flg0
4087 /* Nonzero if this section has a call to __tls_get_addr. */
4088 #define has_tls_get_addr_call sec_flg1
4090 /* Nonzero if this section has any toc or got relocs. */
4091 #define has_toc_reloc sec_flg2
4093 /* Nonzero if this section has a call to another section that uses
4095 #define makes_toc_func_call sec_flg3
4097 /* Recursion protection when determining above flag. */
4098 #define call_check_in_progress sec_flg4
4099 #define call_check_done sec_flg5
4101 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4103 #define ppc_hash_table(p) \
4104 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4105 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4107 #define ppc_stub_hash_lookup(table, string, create, copy) \
4108 ((struct ppc_stub_hash_entry *) \
4109 bfd_hash_lookup ((table), (string), (create), (copy)))
4111 #define ppc_branch_hash_lookup(table, string, create, copy) \
4112 ((struct ppc_branch_hash_entry *) \
4113 bfd_hash_lookup ((table), (string), (create), (copy)))
4115 /* Create an entry in the stub hash table. */
4117 static struct bfd_hash_entry
*
4118 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4119 struct bfd_hash_table
*table
,
4122 /* Allocate the structure if it has not already been allocated by a
4126 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4131 /* Call the allocation method of the superclass. */
4132 entry
= bfd_hash_newfunc (entry
, table
, string
);
4135 struct ppc_stub_hash_entry
*eh
;
4137 /* Initialize the local fields. */
4138 eh
= (struct ppc_stub_hash_entry
*) entry
;
4139 eh
->stub_type
= ppc_stub_none
;
4141 eh
->stub_offset
= 0;
4142 eh
->target_value
= 0;
4143 eh
->target_section
= NULL
;
4152 /* Create an entry in the branch hash table. */
4154 static struct bfd_hash_entry
*
4155 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4156 struct bfd_hash_table
*table
,
4159 /* Allocate the structure if it has not already been allocated by a
4163 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4168 /* Call the allocation method of the superclass. */
4169 entry
= bfd_hash_newfunc (entry
, table
, string
);
4172 struct ppc_branch_hash_entry
*eh
;
4174 /* Initialize the local fields. */
4175 eh
= (struct ppc_branch_hash_entry
*) entry
;
4183 /* Create an entry in a ppc64 ELF linker hash table. */
4185 static struct bfd_hash_entry
*
4186 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4187 struct bfd_hash_table
*table
,
4190 /* Allocate the structure if it has not already been allocated by a
4194 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4199 /* Call the allocation method of the superclass. */
4200 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4203 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4205 memset (&eh
->u
.stub_cache
, 0,
4206 (sizeof (struct ppc_link_hash_entry
)
4207 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4209 /* When making function calls, old ABI code references function entry
4210 points (dot symbols), while new ABI code references the function
4211 descriptor symbol. We need to make any combination of reference and
4212 definition work together, without breaking archive linking.
4214 For a defined function "foo" and an undefined call to "bar":
4215 An old object defines "foo" and ".foo", references ".bar" (possibly
4217 A new object defines "foo" and references "bar".
4219 A new object thus has no problem with its undefined symbols being
4220 satisfied by definitions in an old object. On the other hand, the
4221 old object won't have ".bar" satisfied by a new object.
4223 Keep a list of newly added dot-symbols. */
4225 if (string
[0] == '.')
4227 struct ppc_link_hash_table
*htab
;
4229 htab
= (struct ppc_link_hash_table
*) table
;
4230 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4231 htab
->dot_syms
= eh
;
4238 struct tocsave_entry
{
4244 tocsave_htab_hash (const void *p
)
4246 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4247 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4251 tocsave_htab_eq (const void *p1
, const void *p2
)
4253 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4254 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4255 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4258 /* Destroy a ppc64 ELF linker hash table. */
4261 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4263 struct ppc_link_hash_table
*htab
;
4265 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4266 if (htab
->tocsave_htab
)
4267 htab_delete (htab
->tocsave_htab
);
4268 bfd_hash_table_free (&htab
->branch_hash_table
);
4269 bfd_hash_table_free (&htab
->stub_hash_table
);
4270 _bfd_elf_link_hash_table_free (obfd
);
4273 /* Create a ppc64 ELF linker hash table. */
4275 static struct bfd_link_hash_table
*
4276 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4278 struct ppc_link_hash_table
*htab
;
4279 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4281 htab
= bfd_zmalloc (amt
);
4285 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4286 sizeof (struct ppc_link_hash_entry
),
4293 /* Init the stub hash table too. */
4294 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4295 sizeof (struct ppc_stub_hash_entry
)))
4297 _bfd_elf_link_hash_table_free (abfd
);
4301 /* And the branch hash table. */
4302 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4303 sizeof (struct ppc_branch_hash_entry
)))
4305 bfd_hash_table_free (&htab
->stub_hash_table
);
4306 _bfd_elf_link_hash_table_free (abfd
);
4310 htab
->tocsave_htab
= htab_try_create (1024,
4314 if (htab
->tocsave_htab
== NULL
)
4316 ppc64_elf_link_hash_table_free (abfd
);
4319 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4321 /* Initializing two fields of the union is just cosmetic. We really
4322 only care about glist, but when compiled on a 32-bit host the
4323 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4324 debugger inspection of these fields look nicer. */
4325 htab
->elf
.init_got_refcount
.refcount
= 0;
4326 htab
->elf
.init_got_refcount
.glist
= NULL
;
4327 htab
->elf
.init_plt_refcount
.refcount
= 0;
4328 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4329 htab
->elf
.init_got_offset
.offset
= 0;
4330 htab
->elf
.init_got_offset
.glist
= NULL
;
4331 htab
->elf
.init_plt_offset
.offset
= 0;
4332 htab
->elf
.init_plt_offset
.glist
= NULL
;
4334 return &htab
->elf
.root
;
4337 /* Create sections for linker generated code. */
4340 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4342 struct ppc_link_hash_table
*htab
;
4345 htab
= ppc_hash_table (info
);
4347 /* Create .sfpr for code to save and restore fp regs. */
4348 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4349 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4350 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4352 if (htab
->sfpr
== NULL
4353 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4356 /* Create .glink for lazy dynamic linking support. */
4357 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4359 if (htab
->glink
== NULL
4360 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4363 if (!info
->no_ld_generated_unwind_info
)
4365 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4366 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4367 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4370 if (htab
->glink_eh_frame
== NULL
4371 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4375 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4376 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4377 if (htab
->elf
.iplt
== NULL
4378 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4381 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4382 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4384 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4385 if (htab
->elf
.irelplt
== NULL
4386 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4389 /* Create branch lookup table for plt_branch stubs. */
4390 flags
= (SEC_ALLOC
| SEC_LOAD
4391 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4392 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4394 if (htab
->brlt
== NULL
4395 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4398 if (!bfd_link_pic (info
))
4401 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4402 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4403 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4406 if (htab
->relbrlt
== NULL
4407 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4413 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4416 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4417 struct ppc64_elf_params
*params
)
4419 struct ppc_link_hash_table
*htab
;
4421 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4423 /* Always hook our dynamic sections into the first bfd, which is the
4424 linker created stub bfd. This ensures that the GOT header is at
4425 the start of the output TOC section. */
4426 htab
= ppc_hash_table (info
);
4429 htab
->elf
.dynobj
= params
->stub_bfd
;
4430 htab
->params
= params
;
4432 if (bfd_link_relocatable (info
))
4435 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4438 /* Build a name for an entry in the stub hash table. */
4441 ppc_stub_name (const asection
*input_section
,
4442 const asection
*sym_sec
,
4443 const struct ppc_link_hash_entry
*h
,
4444 const Elf_Internal_Rela
*rel
)
4449 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4450 offsets from a sym as a branch target? In fact, we could
4451 probably assume the addend is always zero. */
4452 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4456 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4457 stub_name
= bfd_malloc (len
);
4458 if (stub_name
== NULL
)
4461 len
= sprintf (stub_name
, "%08x.%s+%x",
4462 input_section
->id
& 0xffffffff,
4463 h
->elf
.root
.root
.string
,
4464 (int) rel
->r_addend
& 0xffffffff);
4468 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4469 stub_name
= bfd_malloc (len
);
4470 if (stub_name
== NULL
)
4473 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4474 input_section
->id
& 0xffffffff,
4475 sym_sec
->id
& 0xffffffff,
4476 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4477 (int) rel
->r_addend
& 0xffffffff);
4479 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4480 stub_name
[len
- 2] = 0;
4484 /* Look up an entry in the stub hash. Stub entries are cached because
4485 creating the stub name takes a bit of time. */
4487 static struct ppc_stub_hash_entry
*
4488 ppc_get_stub_entry (const asection
*input_section
,
4489 const asection
*sym_sec
,
4490 struct ppc_link_hash_entry
*h
,
4491 const Elf_Internal_Rela
*rel
,
4492 struct ppc_link_hash_table
*htab
)
4494 struct ppc_stub_hash_entry
*stub_entry
;
4495 struct map_stub
*group
;
4497 /* If this input section is part of a group of sections sharing one
4498 stub section, then use the id of the first section in the group.
4499 Stub names need to include a section id, as there may well be
4500 more than one stub used to reach say, printf, and we need to
4501 distinguish between them. */
4502 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4504 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4505 && h
->u
.stub_cache
->h
== h
4506 && h
->u
.stub_cache
->group
== group
)
4508 stub_entry
= h
->u
.stub_cache
;
4514 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4515 if (stub_name
== NULL
)
4518 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4519 stub_name
, FALSE
, FALSE
);
4521 h
->u
.stub_cache
= stub_entry
;
4529 /* Add a new stub entry to the stub hash. Not all fields of the new
4530 stub entry are initialised. */
4532 static struct ppc_stub_hash_entry
*
4533 ppc_add_stub (const char *stub_name
,
4535 struct bfd_link_info
*info
)
4537 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4538 struct map_stub
*group
;
4541 struct ppc_stub_hash_entry
*stub_entry
;
4543 group
= htab
->sec_info
[section
->id
].u
.group
;
4544 link_sec
= group
->link_sec
;
4545 stub_sec
= group
->stub_sec
;
4546 if (stub_sec
== NULL
)
4552 namelen
= strlen (link_sec
->name
);
4553 len
= namelen
+ sizeof (STUB_SUFFIX
);
4554 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4558 memcpy (s_name
, link_sec
->name
, namelen
);
4559 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4560 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4561 if (stub_sec
== NULL
)
4563 group
->stub_sec
= stub_sec
;
4566 /* Enter this entry into the linker stub hash table. */
4567 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4569 if (stub_entry
== NULL
)
4571 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4572 section
->owner
, stub_name
);
4576 stub_entry
->group
= group
;
4577 stub_entry
->stub_offset
= 0;
4581 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4582 not already done. */
4585 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4587 asection
*got
, *relgot
;
4589 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4591 if (!is_ppc64_elf (abfd
))
4597 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4600 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4601 | SEC_LINKER_CREATED
);
4603 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4605 || !bfd_set_section_alignment (abfd
, got
, 3))
4608 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4609 flags
| SEC_READONLY
);
4611 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4614 ppc64_elf_tdata (abfd
)->got
= got
;
4615 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4619 /* Create the dynamic sections, and set up shortcuts. */
4622 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4624 struct ppc_link_hash_table
*htab
;
4626 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4629 htab
= ppc_hash_table (info
);
4633 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4634 if (!bfd_link_pic (info
))
4635 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4637 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4638 || (!bfd_link_pic (info
) && !htab
->relbss
))
4644 /* Follow indirect and warning symbol links. */
4646 static inline struct bfd_link_hash_entry
*
4647 follow_link (struct bfd_link_hash_entry
*h
)
4649 while (h
->type
== bfd_link_hash_indirect
4650 || h
->type
== bfd_link_hash_warning
)
4655 static inline struct elf_link_hash_entry
*
4656 elf_follow_link (struct elf_link_hash_entry
*h
)
4658 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4661 static inline struct ppc_link_hash_entry
*
4662 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4664 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4667 /* Merge PLT info on FROM with that on TO. */
4670 move_plt_plist (struct ppc_link_hash_entry
*from
,
4671 struct ppc_link_hash_entry
*to
)
4673 if (from
->elf
.plt
.plist
!= NULL
)
4675 if (to
->elf
.plt
.plist
!= NULL
)
4677 struct plt_entry
**entp
;
4678 struct plt_entry
*ent
;
4680 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4682 struct plt_entry
*dent
;
4684 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4685 if (dent
->addend
== ent
->addend
)
4687 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4694 *entp
= to
->elf
.plt
.plist
;
4697 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4698 from
->elf
.plt
.plist
= NULL
;
4702 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4705 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4706 struct elf_link_hash_entry
*dir
,
4707 struct elf_link_hash_entry
*ind
)
4709 struct ppc_link_hash_entry
*edir
, *eind
;
4711 edir
= (struct ppc_link_hash_entry
*) dir
;
4712 eind
= (struct ppc_link_hash_entry
*) ind
;
4714 edir
->is_func
|= eind
->is_func
;
4715 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4716 edir
->tls_mask
|= eind
->tls_mask
;
4717 if (eind
->oh
!= NULL
)
4718 edir
->oh
= ppc_follow_link (eind
->oh
);
4720 /* If called to transfer flags for a weakdef during processing
4721 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4722 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4723 if (!(ELIMINATE_COPY_RELOCS
4724 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4725 && edir
->elf
.dynamic_adjusted
))
4726 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4728 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4729 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4730 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4731 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4732 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4734 /* Copy over any dynamic relocs we may have on the indirect sym. */
4735 if (eind
->dyn_relocs
!= NULL
)
4737 if (edir
->dyn_relocs
!= NULL
)
4739 struct elf_dyn_relocs
**pp
;
4740 struct elf_dyn_relocs
*p
;
4742 /* Add reloc counts against the indirect sym to the direct sym
4743 list. Merge any entries against the same section. */
4744 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4746 struct elf_dyn_relocs
*q
;
4748 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4749 if (q
->sec
== p
->sec
)
4751 q
->pc_count
+= p
->pc_count
;
4752 q
->count
+= p
->count
;
4759 *pp
= edir
->dyn_relocs
;
4762 edir
->dyn_relocs
= eind
->dyn_relocs
;
4763 eind
->dyn_relocs
= NULL
;
4766 /* If we were called to copy over info for a weak sym, that's all.
4767 You might think dyn_relocs need not be copied over; After all,
4768 both syms will be dynamic or both non-dynamic so we're just
4769 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4770 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4771 dyn_relocs in read-only sections, and it does so on what is the
4773 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4776 /* Copy over got entries that we may have already seen to the
4777 symbol which just became indirect. */
4778 if (eind
->elf
.got
.glist
!= NULL
)
4780 if (edir
->elf
.got
.glist
!= NULL
)
4782 struct got_entry
**entp
;
4783 struct got_entry
*ent
;
4785 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4787 struct got_entry
*dent
;
4789 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4790 if (dent
->addend
== ent
->addend
4791 && dent
->owner
== ent
->owner
4792 && dent
->tls_type
== ent
->tls_type
)
4794 dent
->got
.refcount
+= ent
->got
.refcount
;
4801 *entp
= edir
->elf
.got
.glist
;
4804 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4805 eind
->elf
.got
.glist
= NULL
;
4808 /* And plt entries. */
4809 move_plt_plist (eind
, edir
);
4811 if (eind
->elf
.dynindx
!= -1)
4813 if (edir
->elf
.dynindx
!= -1)
4814 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4815 edir
->elf
.dynstr_index
);
4816 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4817 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4818 eind
->elf
.dynindx
= -1;
4819 eind
->elf
.dynstr_index
= 0;
4823 /* Find the function descriptor hash entry from the given function code
4824 hash entry FH. Link the entries via their OH fields. */
4826 static struct ppc_link_hash_entry
*
4827 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4829 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4833 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4835 fdh
= (struct ppc_link_hash_entry
*)
4836 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4840 fdh
->is_func_descriptor
= 1;
4846 return ppc_follow_link (fdh
);
4849 /* Make a fake function descriptor sym for the code sym FH. */
4851 static struct ppc_link_hash_entry
*
4852 make_fdh (struct bfd_link_info
*info
,
4853 struct ppc_link_hash_entry
*fh
)
4857 struct bfd_link_hash_entry
*bh
;
4858 struct ppc_link_hash_entry
*fdh
;
4860 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4861 newsym
= bfd_make_empty_symbol (abfd
);
4862 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4863 newsym
->section
= bfd_und_section_ptr
;
4865 newsym
->flags
= BSF_WEAK
;
4868 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4869 newsym
->flags
, newsym
->section
,
4870 newsym
->value
, NULL
, FALSE
, FALSE
,
4874 fdh
= (struct ppc_link_hash_entry
*) bh
;
4875 fdh
->elf
.non_elf
= 0;
4877 fdh
->is_func_descriptor
= 1;
4884 /* Fix function descriptor symbols defined in .opd sections to be
4888 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4889 struct bfd_link_info
*info
,
4890 Elf_Internal_Sym
*isym
,
4892 flagword
*flags ATTRIBUTE_UNUSED
,
4896 if ((ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4897 || ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4898 && (ibfd
->flags
& DYNAMIC
) == 0
4899 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4900 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= elf_gnu_symbol_any
;
4903 && strcmp ((*sec
)->name
, ".opd") == 0)
4907 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4908 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4909 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4911 /* If the symbol is a function defined in .opd, and the function
4912 code is in a discarded group, let it appear to be undefined. */
4913 if (!bfd_link_relocatable (info
)
4914 && (*sec
)->reloc_count
!= 0
4915 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4916 FALSE
) != (bfd_vma
) -1
4917 && discarded_section (code_sec
))
4919 *sec
= bfd_und_section_ptr
;
4920 isym
->st_shndx
= SHN_UNDEF
;
4923 else if (*sec
!= NULL
4924 && strcmp ((*sec
)->name
, ".toc") == 0
4925 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4927 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4929 htab
->params
->object_in_toc
= 1;
4932 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4934 if (abiversion (ibfd
) == 0)
4935 set_abiversion (ibfd
, 2);
4936 else if (abiversion (ibfd
) == 1)
4938 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4939 " for ABI version 1\n"), name
);
4940 bfd_set_error (bfd_error_bad_value
);
4948 /* Merge non-visibility st_other attributes: local entry point. */
4951 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4952 const Elf_Internal_Sym
*isym
,
4953 bfd_boolean definition
,
4954 bfd_boolean dynamic
)
4956 if (definition
&& !dynamic
)
4957 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4958 | ELF_ST_VISIBILITY (h
->other
));
4961 /* This function makes an old ABI object reference to ".bar" cause the
4962 inclusion of a new ABI object archive that defines "bar".
4963 NAME is a symbol defined in an archive. Return a symbol in the hash
4964 table that might be satisfied by the archive symbols. */
4966 static struct elf_link_hash_entry
*
4967 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4968 struct bfd_link_info
*info
,
4971 struct elf_link_hash_entry
*h
;
4975 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4977 /* Don't return this sym if it is a fake function descriptor
4978 created by add_symbol_adjust. */
4979 && !(h
->root
.type
== bfd_link_hash_undefweak
4980 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4986 len
= strlen (name
);
4987 dot_name
= bfd_alloc (abfd
, len
+ 2);
4988 if (dot_name
== NULL
)
4989 return (struct elf_link_hash_entry
*) 0 - 1;
4991 memcpy (dot_name
+ 1, name
, len
+ 1);
4992 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4993 bfd_release (abfd
, dot_name
);
4997 /* This function satisfies all old ABI object references to ".bar" if a
4998 new ABI object defines "bar". Well, at least, undefined dot symbols
4999 are made weak. This stops later archive searches from including an
5000 object if we already have a function descriptor definition. It also
5001 prevents the linker complaining about undefined symbols.
5002 We also check and correct mismatched symbol visibility here. The
5003 most restrictive visibility of the function descriptor and the
5004 function entry symbol is used. */
5007 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5009 struct ppc_link_hash_table
*htab
;
5010 struct ppc_link_hash_entry
*fdh
;
5012 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5015 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5016 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5018 if (eh
->elf
.root
.root
.string
[0] != '.')
5021 htab
= ppc_hash_table (info
);
5025 fdh
= lookup_fdh (eh
, htab
);
5028 if (!bfd_link_relocatable (info
)
5029 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5030 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5031 && eh
->elf
.ref_regular
)
5033 /* Make an undefweak function descriptor sym, which is enough to
5034 pull in an --as-needed shared lib, but won't cause link
5035 errors. Archives are handled elsewhere. */
5036 fdh
= make_fdh (info
, eh
);
5039 fdh
->elf
.ref_regular
= 1;
5044 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5045 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5046 if (entry_vis
< descr_vis
)
5047 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5048 else if (entry_vis
> descr_vis
)
5049 eh
->elf
.other
+= descr_vis
- entry_vis
;
5051 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
5052 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5053 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
5055 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
5056 eh
->was_undefined
= 1;
5057 htab
->twiddled_syms
= 1;
5064 /* Set up opd section info and abiversion for IBFD, and process list
5065 of dot-symbols we made in link_hash_newfunc. */
5068 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5070 struct ppc_link_hash_table
*htab
;
5071 struct ppc_link_hash_entry
**p
, *eh
;
5072 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5074 if (opd
!= NULL
&& opd
->size
!= 0)
5076 if (abiversion (ibfd
) == 0)
5077 set_abiversion (ibfd
, 1);
5078 else if (abiversion (ibfd
) == 2)
5080 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5082 ibfd
, abiversion (ibfd
));
5083 bfd_set_error (bfd_error_bad_value
);
5087 if ((ibfd
->flags
& DYNAMIC
) == 0
5088 && (opd
->flags
& SEC_RELOC
) != 0
5089 && opd
->reloc_count
!= 0
5090 && !bfd_is_abs_section (opd
->output_section
))
5092 /* Garbage collection needs some extra help with .opd sections.
5093 We don't want to necessarily keep everything referenced by
5094 relocs in .opd, as that would keep all functions. Instead,
5095 if we reference an .opd symbol (a function descriptor), we
5096 want to keep the function code symbol's section. This is
5097 easy for global symbols, but for local syms we need to keep
5098 information about the associated function section. */
5100 asection
**opd_sym_map
;
5102 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5103 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5104 if (opd_sym_map
== NULL
)
5106 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5107 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5108 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5112 if (!is_ppc64_elf (info
->output_bfd
))
5114 htab
= ppc_hash_table (info
);
5118 /* For input files without an explicit abiversion in e_flags
5119 we should have flagged any with symbol st_other bits set
5120 as ELFv1 and above flagged those with .opd as ELFv2.
5121 Set the output abiversion if not yet set, and for any input
5122 still ambiguous, take its abiversion from the output.
5123 Differences in ABI are reported later. */
5124 if (abiversion (info
->output_bfd
) == 0)
5125 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5126 else if (abiversion (ibfd
) == 0)
5127 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5129 p
= &htab
->dot_syms
;
5130 while ((eh
= *p
) != NULL
)
5133 if (&eh
->elf
== htab
->elf
.hgot
)
5135 else if (htab
->elf
.hgot
== NULL
5136 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5137 htab
->elf
.hgot
= &eh
->elf
;
5138 else if (!add_symbol_adjust (eh
, info
))
5140 p
= &eh
->u
.next_dot_sym
;
5143 /* Clear the list for non-ppc64 input files. */
5144 p
= &htab
->dot_syms
;
5145 while ((eh
= *p
) != NULL
)
5148 p
= &eh
->u
.next_dot_sym
;
5151 /* We need to fix the undefs list for any syms we have twiddled to
5153 if (htab
->twiddled_syms
)
5155 bfd_link_repair_undef_list (&htab
->elf
.root
);
5156 htab
->twiddled_syms
= 0;
5161 /* Undo hash table changes when an --as-needed input file is determined
5162 not to be needed. */
5165 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5166 struct bfd_link_info
*info
,
5167 enum notice_asneeded_action act
)
5169 if (act
== notice_not_needed
)
5171 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5176 htab
->dot_syms
= NULL
;
5178 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5181 /* If --just-symbols against a final linked binary, then assume we need
5182 toc adjusting stubs when calling functions defined there. */
5185 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5187 if ((sec
->flags
& SEC_CODE
) != 0
5188 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5189 && is_ppc64_elf (sec
->owner
))
5191 if (abiversion (sec
->owner
) >= 2
5192 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5193 sec
->has_toc_reloc
= 1;
5195 _bfd_elf_link_just_syms (sec
, info
);
5198 static struct plt_entry
**
5199 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5200 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5202 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5203 struct plt_entry
**local_plt
;
5204 unsigned char *local_got_tls_masks
;
5206 if (local_got_ents
== NULL
)
5208 bfd_size_type size
= symtab_hdr
->sh_info
;
5210 size
*= (sizeof (*local_got_ents
)
5211 + sizeof (*local_plt
)
5212 + sizeof (*local_got_tls_masks
));
5213 local_got_ents
= bfd_zalloc (abfd
, size
);
5214 if (local_got_ents
== NULL
)
5216 elf_local_got_ents (abfd
) = local_got_ents
;
5219 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5221 struct got_entry
*ent
;
5223 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5224 if (ent
->addend
== r_addend
5225 && ent
->owner
== abfd
5226 && ent
->tls_type
== tls_type
)
5230 bfd_size_type amt
= sizeof (*ent
);
5231 ent
= bfd_alloc (abfd
, amt
);
5234 ent
->next
= local_got_ents
[r_symndx
];
5235 ent
->addend
= r_addend
;
5237 ent
->tls_type
= tls_type
;
5238 ent
->is_indirect
= FALSE
;
5239 ent
->got
.refcount
= 0;
5240 local_got_ents
[r_symndx
] = ent
;
5242 ent
->got
.refcount
+= 1;
5245 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5246 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5247 local_got_tls_masks
[r_symndx
] |= tls_type
;
5249 return local_plt
+ r_symndx
;
5253 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5255 struct plt_entry
*ent
;
5257 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5258 if (ent
->addend
== addend
)
5262 bfd_size_type amt
= sizeof (*ent
);
5263 ent
= bfd_alloc (abfd
, amt
);
5267 ent
->addend
= addend
;
5268 ent
->plt
.refcount
= 0;
5271 ent
->plt
.refcount
+= 1;
5276 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5278 return (r_type
== R_PPC64_REL24
5279 || r_type
== R_PPC64_REL14
5280 || r_type
== R_PPC64_REL14_BRTAKEN
5281 || r_type
== R_PPC64_REL14_BRNTAKEN
5282 || r_type
== R_PPC64_ADDR24
5283 || r_type
== R_PPC64_ADDR14
5284 || r_type
== R_PPC64_ADDR14_BRTAKEN
5285 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5288 /* Look through the relocs for a section during the first phase, and
5289 calculate needed space in the global offset table, procedure
5290 linkage table, and dynamic reloc sections. */
5293 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5294 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5296 struct ppc_link_hash_table
*htab
;
5297 Elf_Internal_Shdr
*symtab_hdr
;
5298 struct elf_link_hash_entry
**sym_hashes
;
5299 const Elf_Internal_Rela
*rel
;
5300 const Elf_Internal_Rela
*rel_end
;
5302 asection
**opd_sym_map
;
5303 struct elf_link_hash_entry
*tga
, *dottga
;
5305 if (bfd_link_relocatable (info
))
5308 /* Don't do anything special with non-loaded, non-alloced sections.
5309 In particular, any relocs in such sections should not affect GOT
5310 and PLT reference counting (ie. we don't allow them to create GOT
5311 or PLT entries), there's no possibility or desire to optimize TLS
5312 relocs, and there's not much point in propagating relocs to shared
5313 libs that the dynamic linker won't relocate. */
5314 if ((sec
->flags
& SEC_ALLOC
) == 0)
5317 BFD_ASSERT (is_ppc64_elf (abfd
));
5319 htab
= ppc_hash_table (info
);
5323 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5324 FALSE
, FALSE
, TRUE
);
5325 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5326 FALSE
, FALSE
, TRUE
);
5327 symtab_hdr
= &elf_symtab_hdr (abfd
);
5328 sym_hashes
= elf_sym_hashes (abfd
);
5331 if (ppc64_elf_section_data (sec
) != NULL
5332 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5333 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5335 rel_end
= relocs
+ sec
->reloc_count
;
5336 for (rel
= relocs
; rel
< rel_end
; rel
++)
5338 unsigned long r_symndx
;
5339 struct elf_link_hash_entry
*h
;
5340 enum elf_ppc64_reloc_type r_type
;
5342 struct _ppc64_elf_section_data
*ppc64_sec
;
5343 struct plt_entry
**ifunc
;
5345 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5346 if (r_symndx
< symtab_hdr
->sh_info
)
5350 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5351 h
= elf_follow_link (h
);
5353 /* PR15323, ref flags aren't set for references in the same
5355 h
->root
.non_ir_ref
= 1;
5357 if (h
== htab
->elf
.hgot
)
5358 sec
->has_toc_reloc
= 1;
5365 if (h
->type
== STT_GNU_IFUNC
)
5368 ifunc
= &h
->plt
.plist
;
5373 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5378 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5380 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5381 rel
->r_addend
, PLT_IFUNC
);
5386 r_type
= ELF64_R_TYPE (rel
->r_info
);
5387 if (is_branch_reloc (r_type
))
5389 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5392 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5393 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5394 /* We have a new-style __tls_get_addr call with a marker
5398 /* Mark this section as having an old-style call. */
5399 sec
->has_tls_get_addr_call
= 1;
5402 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5404 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5412 /* These special tls relocs tie a call to __tls_get_addr with
5413 its parameter symbol. */
5416 case R_PPC64_GOT_TLSLD16
:
5417 case R_PPC64_GOT_TLSLD16_LO
:
5418 case R_PPC64_GOT_TLSLD16_HI
:
5419 case R_PPC64_GOT_TLSLD16_HA
:
5420 tls_type
= TLS_TLS
| TLS_LD
;
5423 case R_PPC64_GOT_TLSGD16
:
5424 case R_PPC64_GOT_TLSGD16_LO
:
5425 case R_PPC64_GOT_TLSGD16_HI
:
5426 case R_PPC64_GOT_TLSGD16_HA
:
5427 tls_type
= TLS_TLS
| TLS_GD
;
5430 case R_PPC64_GOT_TPREL16_DS
:
5431 case R_PPC64_GOT_TPREL16_LO_DS
:
5432 case R_PPC64_GOT_TPREL16_HI
:
5433 case R_PPC64_GOT_TPREL16_HA
:
5434 if (bfd_link_pic (info
))
5435 info
->flags
|= DF_STATIC_TLS
;
5436 tls_type
= TLS_TLS
| TLS_TPREL
;
5439 case R_PPC64_GOT_DTPREL16_DS
:
5440 case R_PPC64_GOT_DTPREL16_LO_DS
:
5441 case R_PPC64_GOT_DTPREL16_HI
:
5442 case R_PPC64_GOT_DTPREL16_HA
:
5443 tls_type
= TLS_TLS
| TLS_DTPREL
;
5445 sec
->has_tls_reloc
= 1;
5449 case R_PPC64_GOT16_DS
:
5450 case R_PPC64_GOT16_HA
:
5451 case R_PPC64_GOT16_HI
:
5452 case R_PPC64_GOT16_LO
:
5453 case R_PPC64_GOT16_LO_DS
:
5454 /* This symbol requires a global offset table entry. */
5455 sec
->has_toc_reloc
= 1;
5456 if (r_type
== R_PPC64_GOT_TLSLD16
5457 || r_type
== R_PPC64_GOT_TLSGD16
5458 || r_type
== R_PPC64_GOT_TPREL16_DS
5459 || r_type
== R_PPC64_GOT_DTPREL16_DS
5460 || r_type
== R_PPC64_GOT16
5461 || r_type
== R_PPC64_GOT16_DS
)
5463 htab
->do_multi_toc
= 1;
5464 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5467 if (ppc64_elf_tdata (abfd
)->got
== NULL
5468 && !create_got_section (abfd
, info
))
5473 struct ppc_link_hash_entry
*eh
;
5474 struct got_entry
*ent
;
5476 eh
= (struct ppc_link_hash_entry
*) h
;
5477 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5478 if (ent
->addend
== rel
->r_addend
5479 && ent
->owner
== abfd
5480 && ent
->tls_type
== tls_type
)
5484 bfd_size_type amt
= sizeof (*ent
);
5485 ent
= bfd_alloc (abfd
, amt
);
5488 ent
->next
= eh
->elf
.got
.glist
;
5489 ent
->addend
= rel
->r_addend
;
5491 ent
->tls_type
= tls_type
;
5492 ent
->is_indirect
= FALSE
;
5493 ent
->got
.refcount
= 0;
5494 eh
->elf
.got
.glist
= ent
;
5496 ent
->got
.refcount
+= 1;
5497 eh
->tls_mask
|= tls_type
;
5500 /* This is a global offset table entry for a local symbol. */
5501 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5502 rel
->r_addend
, tls_type
))
5505 /* We may also need a plt entry if the symbol turns out to be
5507 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5509 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5514 case R_PPC64_PLT16_HA
:
5515 case R_PPC64_PLT16_HI
:
5516 case R_PPC64_PLT16_LO
:
5519 /* This symbol requires a procedure linkage table entry. We
5520 actually build the entry in adjust_dynamic_symbol,
5521 because this might be a case of linking PIC code without
5522 linking in any dynamic objects, in which case we don't
5523 need to generate a procedure linkage table after all. */
5526 /* It does not make sense to have a procedure linkage
5527 table entry for a local symbol. */
5528 bfd_set_error (bfd_error_bad_value
);
5533 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5536 if (h
->root
.root
.string
[0] == '.'
5537 && h
->root
.root
.string
[1] != '\0')
5538 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5542 /* The following relocations don't need to propagate the
5543 relocation if linking a shared object since they are
5544 section relative. */
5545 case R_PPC64_SECTOFF
:
5546 case R_PPC64_SECTOFF_LO
:
5547 case R_PPC64_SECTOFF_HI
:
5548 case R_PPC64_SECTOFF_HA
:
5549 case R_PPC64_SECTOFF_DS
:
5550 case R_PPC64_SECTOFF_LO_DS
:
5551 case R_PPC64_DTPREL16
:
5552 case R_PPC64_DTPREL16_LO
:
5553 case R_PPC64_DTPREL16_HI
:
5554 case R_PPC64_DTPREL16_HA
:
5555 case R_PPC64_DTPREL16_DS
:
5556 case R_PPC64_DTPREL16_LO_DS
:
5557 case R_PPC64_DTPREL16_HIGH
:
5558 case R_PPC64_DTPREL16_HIGHA
:
5559 case R_PPC64_DTPREL16_HIGHER
:
5560 case R_PPC64_DTPREL16_HIGHERA
:
5561 case R_PPC64_DTPREL16_HIGHEST
:
5562 case R_PPC64_DTPREL16_HIGHESTA
:
5567 case R_PPC64_REL16_LO
:
5568 case R_PPC64_REL16_HI
:
5569 case R_PPC64_REL16_HA
:
5570 case R_PPC64_REL16DX_HA
:
5573 /* Not supported as a dynamic relocation. */
5574 case R_PPC64_ADDR64_LOCAL
:
5575 if (bfd_link_pic (info
))
5577 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5579 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5580 "in shared libraries and PIEs.\n"),
5581 abfd
, sec
, rel
->r_offset
,
5582 ppc64_elf_howto_table
[r_type
]->name
);
5583 bfd_set_error (bfd_error_bad_value
);
5589 case R_PPC64_TOC16_DS
:
5590 htab
->do_multi_toc
= 1;
5591 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5592 case R_PPC64_TOC16_LO
:
5593 case R_PPC64_TOC16_HI
:
5594 case R_PPC64_TOC16_HA
:
5595 case R_PPC64_TOC16_LO_DS
:
5596 sec
->has_toc_reloc
= 1;
5603 /* This relocation describes the C++ object vtable hierarchy.
5604 Reconstruct it for later use during GC. */
5605 case R_PPC64_GNU_VTINHERIT
:
5606 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5610 /* This relocation describes which C++ vtable entries are actually
5611 used. Record for later use during GC. */
5612 case R_PPC64_GNU_VTENTRY
:
5613 BFD_ASSERT (h
!= NULL
);
5615 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5620 case R_PPC64_REL14_BRTAKEN
:
5621 case R_PPC64_REL14_BRNTAKEN
:
5623 asection
*dest
= NULL
;
5625 /* Heuristic: If jumping outside our section, chances are
5626 we are going to need a stub. */
5629 /* If the sym is weak it may be overridden later, so
5630 don't assume we know where a weak sym lives. */
5631 if (h
->root
.type
== bfd_link_hash_defined
)
5632 dest
= h
->root
.u
.def
.section
;
5636 Elf_Internal_Sym
*isym
;
5638 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5643 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5647 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5652 if (h
!= NULL
&& ifunc
== NULL
)
5654 /* We may need a .plt entry if the function this reloc
5655 refers to is in a shared lib. */
5656 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5659 if (h
->root
.root
.string
[0] == '.'
5660 && h
->root
.root
.string
[1] != '\0')
5661 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5662 if (h
== tga
|| h
== dottga
)
5663 sec
->has_tls_reloc
= 1;
5667 case R_PPC64_TPREL64
:
5668 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5669 if (bfd_link_pic (info
))
5670 info
->flags
|= DF_STATIC_TLS
;
5673 case R_PPC64_DTPMOD64
:
5674 if (rel
+ 1 < rel_end
5675 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5676 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5677 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5679 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5682 case R_PPC64_DTPREL64
:
5683 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5685 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5686 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5687 /* This is the second reloc of a dtpmod, dtprel pair.
5688 Don't mark with TLS_DTPREL. */
5692 sec
->has_tls_reloc
= 1;
5695 struct ppc_link_hash_entry
*eh
;
5696 eh
= (struct ppc_link_hash_entry
*) h
;
5697 eh
->tls_mask
|= tls_type
;
5700 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5701 rel
->r_addend
, tls_type
))
5704 ppc64_sec
= ppc64_elf_section_data (sec
);
5705 if (ppc64_sec
->sec_type
!= sec_toc
)
5709 /* One extra to simplify get_tls_mask. */
5710 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5711 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5712 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5714 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5715 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5716 if (ppc64_sec
->u
.toc
.add
== NULL
)
5718 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5719 ppc64_sec
->sec_type
= sec_toc
;
5721 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5722 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5723 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5725 /* Mark the second slot of a GD or LD entry.
5726 -1 to indicate GD and -2 to indicate LD. */
5727 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5728 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5729 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5730 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5733 case R_PPC64_TPREL16
:
5734 case R_PPC64_TPREL16_LO
:
5735 case R_PPC64_TPREL16_HI
:
5736 case R_PPC64_TPREL16_HA
:
5737 case R_PPC64_TPREL16_DS
:
5738 case R_PPC64_TPREL16_LO_DS
:
5739 case R_PPC64_TPREL16_HIGH
:
5740 case R_PPC64_TPREL16_HIGHA
:
5741 case R_PPC64_TPREL16_HIGHER
:
5742 case R_PPC64_TPREL16_HIGHERA
:
5743 case R_PPC64_TPREL16_HIGHEST
:
5744 case R_PPC64_TPREL16_HIGHESTA
:
5745 if (bfd_link_pic (info
))
5747 info
->flags
|= DF_STATIC_TLS
;
5752 case R_PPC64_ADDR64
:
5753 if (opd_sym_map
!= NULL
5754 && rel
+ 1 < rel_end
5755 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5759 if (h
->root
.root
.string
[0] == '.'
5760 && h
->root
.root
.string
[1] != 0
5761 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5764 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5769 Elf_Internal_Sym
*isym
;
5771 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5776 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5777 if (s
!= NULL
&& s
!= sec
)
5778 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5783 case R_PPC64_ADDR16
:
5784 case R_PPC64_ADDR16_DS
:
5785 case R_PPC64_ADDR16_HA
:
5786 case R_PPC64_ADDR16_HI
:
5787 case R_PPC64_ADDR16_HIGH
:
5788 case R_PPC64_ADDR16_HIGHA
:
5789 case R_PPC64_ADDR16_HIGHER
:
5790 case R_PPC64_ADDR16_HIGHERA
:
5791 case R_PPC64_ADDR16_HIGHEST
:
5792 case R_PPC64_ADDR16_HIGHESTA
:
5793 case R_PPC64_ADDR16_LO
:
5794 case R_PPC64_ADDR16_LO_DS
:
5795 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5796 && rel
->r_addend
== 0)
5798 /* We may need a .plt entry if this reloc refers to a
5799 function in a shared lib. */
5800 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5802 h
->pointer_equality_needed
= 1;
5809 case R_PPC64_ADDR14
:
5810 case R_PPC64_ADDR14_BRNTAKEN
:
5811 case R_PPC64_ADDR14_BRTAKEN
:
5812 case R_PPC64_ADDR24
:
5813 case R_PPC64_ADDR32
:
5814 case R_PPC64_UADDR16
:
5815 case R_PPC64_UADDR32
:
5816 case R_PPC64_UADDR64
:
5818 if (h
!= NULL
&& !bfd_link_pic (info
))
5819 /* We may need a copy reloc. */
5822 /* Don't propagate .opd relocs. */
5823 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5826 /* If we are creating a shared library, and this is a reloc
5827 against a global symbol, or a non PC relative reloc
5828 against a local symbol, then we need to copy the reloc
5829 into the shared library. However, if we are linking with
5830 -Bsymbolic, we do not need to copy a reloc against a
5831 global symbol which is defined in an object we are
5832 including in the link (i.e., DEF_REGULAR is set). At
5833 this point we have not seen all the input files, so it is
5834 possible that DEF_REGULAR is not set now but will be set
5835 later (it is never cleared). In case of a weak definition,
5836 DEF_REGULAR may be cleared later by a strong definition in
5837 a shared library. We account for that possibility below by
5838 storing information in the dyn_relocs field of the hash
5839 table entry. A similar situation occurs when creating
5840 shared libraries and symbol visibility changes render the
5843 If on the other hand, we are creating an executable, we
5844 may need to keep relocations for symbols satisfied by a
5845 dynamic library if we manage to avoid copy relocs for the
5848 if ((bfd_link_pic (info
)
5849 && (must_be_dyn_reloc (info
, r_type
)
5851 && (!SYMBOLIC_BIND (info
, h
)
5852 || h
->root
.type
== bfd_link_hash_defweak
5853 || !h
->def_regular
))))
5854 || (ELIMINATE_COPY_RELOCS
5855 && !bfd_link_pic (info
)
5857 && (h
->root
.type
== bfd_link_hash_defweak
5858 || !h
->def_regular
))
5859 || (!bfd_link_pic (info
)
5862 /* We must copy these reloc types into the output file.
5863 Create a reloc section in dynobj and make room for
5867 sreloc
= _bfd_elf_make_dynamic_reloc_section
5868 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5874 /* If this is a global symbol, we count the number of
5875 relocations we need for this symbol. */
5878 struct elf_dyn_relocs
*p
;
5879 struct elf_dyn_relocs
**head
;
5881 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5883 if (p
== NULL
|| p
->sec
!= sec
)
5885 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5895 if (!must_be_dyn_reloc (info
, r_type
))
5900 /* Track dynamic relocs needed for local syms too.
5901 We really need local syms available to do this
5903 struct ppc_dyn_relocs
*p
;
5904 struct ppc_dyn_relocs
**head
;
5905 bfd_boolean is_ifunc
;
5908 Elf_Internal_Sym
*isym
;
5910 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5915 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5919 vpp
= &elf_section_data (s
)->local_dynrel
;
5920 head
= (struct ppc_dyn_relocs
**) vpp
;
5921 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5923 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5925 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5927 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5933 p
->ifunc
= is_ifunc
;
5949 /* Merge backend specific data from an object file to the output
5950 object file when linking. */
5953 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5955 unsigned long iflags
, oflags
;
5957 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5960 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5963 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5966 iflags
= elf_elfheader (ibfd
)->e_flags
;
5967 oflags
= elf_elfheader (obfd
)->e_flags
;
5969 if (iflags
& ~EF_PPC64_ABI
)
5971 (*_bfd_error_handler
)
5972 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5973 bfd_set_error (bfd_error_bad_value
);
5976 else if (iflags
!= oflags
&& iflags
!= 0)
5978 (*_bfd_error_handler
)
5979 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5980 ibfd
, iflags
, oflags
);
5981 bfd_set_error (bfd_error_bad_value
);
5985 /* Merge Tag_compatibility attributes and any common GNU ones. */
5986 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5992 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5994 /* Print normal ELF private data. */
5995 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5997 if (elf_elfheader (abfd
)->e_flags
!= 0)
6001 /* xgettext:c-format */
6002 fprintf (file
, _("private flags = 0x%lx:"),
6003 elf_elfheader (abfd
)->e_flags
);
6005 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6006 fprintf (file
, _(" [abiv%ld]"),
6007 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6014 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6015 of the code entry point, and its section, which must be in the same
6016 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6019 opd_entry_value (asection
*opd_sec
,
6021 asection
**code_sec
,
6023 bfd_boolean in_code_sec
)
6025 bfd
*opd_bfd
= opd_sec
->owner
;
6026 Elf_Internal_Rela
*relocs
;
6027 Elf_Internal_Rela
*lo
, *hi
, *look
;
6030 /* No relocs implies we are linking a --just-symbols object, or looking
6031 at a final linked executable with addr2line or somesuch. */
6032 if (opd_sec
->reloc_count
== 0)
6034 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6036 if (contents
== NULL
)
6038 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6039 return (bfd_vma
) -1;
6040 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6043 /* PR 17512: file: 64b9dfbb. */
6044 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6045 return (bfd_vma
) -1;
6047 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6048 if (code_sec
!= NULL
)
6050 asection
*sec
, *likely
= NULL
;
6056 && val
< sec
->vma
+ sec
->size
)
6062 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6064 && (sec
->flags
& SEC_LOAD
) != 0
6065 && (sec
->flags
& SEC_ALLOC
) != 0)
6070 if (code_off
!= NULL
)
6071 *code_off
= val
- likely
->vma
;
6077 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6079 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6081 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6082 /* PR 17512: file: df8e1fd6. */
6084 return (bfd_vma
) -1;
6086 /* Go find the opd reloc at the sym address. */
6088 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6092 look
= lo
+ (hi
- lo
) / 2;
6093 if (look
->r_offset
< offset
)
6095 else if (look
->r_offset
> offset
)
6099 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6101 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6102 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6104 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6105 asection
*sec
= NULL
;
6107 if (symndx
>= symtab_hdr
->sh_info
6108 && elf_sym_hashes (opd_bfd
) != NULL
)
6110 struct elf_link_hash_entry
**sym_hashes
;
6111 struct elf_link_hash_entry
*rh
;
6113 sym_hashes
= elf_sym_hashes (opd_bfd
);
6114 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6117 rh
= elf_follow_link (rh
);
6118 if (rh
->root
.type
!= bfd_link_hash_defined
6119 && rh
->root
.type
!= bfd_link_hash_defweak
)
6121 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6123 val
= rh
->root
.u
.def
.value
;
6124 sec
= rh
->root
.u
.def
.section
;
6131 Elf_Internal_Sym
*sym
;
6133 if (symndx
< symtab_hdr
->sh_info
)
6135 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6138 size_t symcnt
= symtab_hdr
->sh_info
;
6139 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6144 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6150 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6156 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6159 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6160 val
= sym
->st_value
;
6163 val
+= look
->r_addend
;
6164 if (code_off
!= NULL
)
6166 if (code_sec
!= NULL
)
6168 if (in_code_sec
&& *code_sec
!= sec
)
6173 if (sec
->output_section
!= NULL
)
6174 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6183 /* If the ELF symbol SYM might be a function in SEC, return the
6184 function size and set *CODE_OFF to the function's entry point,
6185 otherwise return zero. */
6187 static bfd_size_type
6188 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6193 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6194 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6198 if (!(sym
->flags
& BSF_SYNTHETIC
))
6199 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6201 if (strcmp (sym
->section
->name
, ".opd") == 0)
6203 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6204 bfd_vma symval
= sym
->value
;
6207 && opd
->adjust
!= NULL
6208 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6210 /* opd_entry_value will use cached relocs that have been
6211 adjusted, but with raw symbols. That means both local
6212 and global symbols need adjusting. */
6213 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6219 if (opd_entry_value (sym
->section
, symval
,
6220 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6222 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6223 symbol. This size has nothing to do with the code size of the
6224 function, which is what we're supposed to return, but the
6225 code size isn't available without looking up the dot-sym.
6226 However, doing that would be a waste of time particularly
6227 since elf_find_function will look at the dot-sym anyway.
6228 Now, elf_find_function will keep the largest size of any
6229 function sym found at the code address of interest, so return
6230 1 here to avoid it incorrectly caching a larger function size
6231 for a small function. This does mean we return the wrong
6232 size for a new-ABI function of size 24, but all that does is
6233 disable caching for such functions. */
6239 if (sym
->section
!= sec
)
6241 *code_off
= sym
->value
;
6248 /* Return true if symbol is defined in a regular object file. */
6251 is_static_defined (struct elf_link_hash_entry
*h
)
6253 return ((h
->root
.type
== bfd_link_hash_defined
6254 || h
->root
.type
== bfd_link_hash_defweak
)
6255 && h
->root
.u
.def
.section
!= NULL
6256 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6259 /* If FDH is a function descriptor symbol, return the associated code
6260 entry symbol if it is defined. Return NULL otherwise. */
6262 static struct ppc_link_hash_entry
*
6263 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6265 if (fdh
->is_func_descriptor
)
6267 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6268 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6269 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6275 /* If FH is a function code entry symbol, return the associated
6276 function descriptor symbol if it is defined. Return NULL otherwise. */
6278 static struct ppc_link_hash_entry
*
6279 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6282 && fh
->oh
->is_func_descriptor
)
6284 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6285 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6286 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6292 /* Mark all our entry sym sections, both opd and code section. */
6295 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6297 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6298 struct bfd_sym_chain
*sym
;
6303 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6305 struct ppc_link_hash_entry
*eh
, *fh
;
6308 eh
= (struct ppc_link_hash_entry
*)
6309 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6312 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6313 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6316 fh
= defined_code_entry (eh
);
6319 sec
= fh
->elf
.root
.u
.def
.section
;
6320 sec
->flags
|= SEC_KEEP
;
6322 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6323 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6324 eh
->elf
.root
.u
.def
.value
,
6325 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6326 sec
->flags
|= SEC_KEEP
;
6328 sec
= eh
->elf
.root
.u
.def
.section
;
6329 sec
->flags
|= SEC_KEEP
;
6333 /* Mark sections containing dynamically referenced symbols. When
6334 building shared libraries, we must assume that any visible symbol is
6338 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6340 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6341 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6342 struct ppc_link_hash_entry
*fdh
;
6343 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6345 /* Dynamic linking info is on the func descriptor sym. */
6346 fdh
= defined_func_desc (eh
);
6350 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6351 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6352 && (eh
->elf
.ref_dynamic
6353 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6354 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6355 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6356 && (!bfd_link_executable (info
)
6357 || info
->export_dynamic
6360 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6361 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6362 || !bfd_hide_sym_by_version (info
->version_info
,
6363 eh
->elf
.root
.root
.string
)))))
6366 struct ppc_link_hash_entry
*fh
;
6368 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6370 /* Function descriptor syms cause the associated
6371 function code sym section to be marked. */
6372 fh
= defined_code_entry (eh
);
6375 code_sec
= fh
->elf
.root
.u
.def
.section
;
6376 code_sec
->flags
|= SEC_KEEP
;
6378 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6379 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6380 eh
->elf
.root
.u
.def
.value
,
6381 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6382 code_sec
->flags
|= SEC_KEEP
;
6388 /* Return the section that should be marked against GC for a given
6392 ppc64_elf_gc_mark_hook (asection
*sec
,
6393 struct bfd_link_info
*info
,
6394 Elf_Internal_Rela
*rel
,
6395 struct elf_link_hash_entry
*h
,
6396 Elf_Internal_Sym
*sym
)
6400 /* Syms return NULL if we're marking .opd, so we avoid marking all
6401 function sections, as all functions are referenced in .opd. */
6403 if (get_opd_info (sec
) != NULL
)
6408 enum elf_ppc64_reloc_type r_type
;
6409 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6411 r_type
= ELF64_R_TYPE (rel
->r_info
);
6414 case R_PPC64_GNU_VTINHERIT
:
6415 case R_PPC64_GNU_VTENTRY
:
6419 switch (h
->root
.type
)
6421 case bfd_link_hash_defined
:
6422 case bfd_link_hash_defweak
:
6423 eh
= (struct ppc_link_hash_entry
*) h
;
6424 fdh
= defined_func_desc (eh
);
6428 /* Function descriptor syms cause the associated
6429 function code sym section to be marked. */
6430 fh
= defined_code_entry (eh
);
6433 /* They also mark their opd section. */
6434 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6436 rsec
= fh
->elf
.root
.u
.def
.section
;
6438 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6439 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6440 eh
->elf
.root
.u
.def
.value
,
6441 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6442 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6444 rsec
= h
->root
.u
.def
.section
;
6447 case bfd_link_hash_common
:
6448 rsec
= h
->root
.u
.c
.p
->section
;
6452 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6458 struct _opd_sec_data
*opd
;
6460 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6461 opd
= get_opd_info (rsec
);
6462 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6466 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6473 /* Update the .got, .plt. and dynamic reloc reference counts for the
6474 section being removed. */
6477 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6478 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6480 struct ppc_link_hash_table
*htab
;
6481 Elf_Internal_Shdr
*symtab_hdr
;
6482 struct elf_link_hash_entry
**sym_hashes
;
6483 struct got_entry
**local_got_ents
;
6484 const Elf_Internal_Rela
*rel
, *relend
;
6486 if (bfd_link_relocatable (info
))
6489 if ((sec
->flags
& SEC_ALLOC
) == 0)
6492 elf_section_data (sec
)->local_dynrel
= NULL
;
6494 htab
= ppc_hash_table (info
);
6498 symtab_hdr
= &elf_symtab_hdr (abfd
);
6499 sym_hashes
= elf_sym_hashes (abfd
);
6500 local_got_ents
= elf_local_got_ents (abfd
);
6502 relend
= relocs
+ sec
->reloc_count
;
6503 for (rel
= relocs
; rel
< relend
; rel
++)
6505 unsigned long r_symndx
;
6506 enum elf_ppc64_reloc_type r_type
;
6507 struct elf_link_hash_entry
*h
= NULL
;
6508 unsigned char tls_type
= 0;
6510 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6511 r_type
= ELF64_R_TYPE (rel
->r_info
);
6512 if (r_symndx
>= symtab_hdr
->sh_info
)
6514 struct ppc_link_hash_entry
*eh
;
6515 struct elf_dyn_relocs
**pp
;
6516 struct elf_dyn_relocs
*p
;
6518 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6519 h
= elf_follow_link (h
);
6520 eh
= (struct ppc_link_hash_entry
*) h
;
6522 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6525 /* Everything must go for SEC. */
6531 if (is_branch_reloc (r_type
))
6533 struct plt_entry
**ifunc
= NULL
;
6536 if (h
->type
== STT_GNU_IFUNC
)
6537 ifunc
= &h
->plt
.plist
;
6539 else if (local_got_ents
!= NULL
)
6541 struct plt_entry
**local_plt
= (struct plt_entry
**)
6542 (local_got_ents
+ symtab_hdr
->sh_info
);
6543 unsigned char *local_got_tls_masks
= (unsigned char *)
6544 (local_plt
+ symtab_hdr
->sh_info
);
6545 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6546 ifunc
= local_plt
+ r_symndx
;
6550 struct plt_entry
*ent
;
6552 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6553 if (ent
->addend
== rel
->r_addend
)
6557 if (ent
->plt
.refcount
> 0)
6558 ent
->plt
.refcount
-= 1;
6565 case R_PPC64_GOT_TLSLD16
:
6566 case R_PPC64_GOT_TLSLD16_LO
:
6567 case R_PPC64_GOT_TLSLD16_HI
:
6568 case R_PPC64_GOT_TLSLD16_HA
:
6569 tls_type
= TLS_TLS
| TLS_LD
;
6572 case R_PPC64_GOT_TLSGD16
:
6573 case R_PPC64_GOT_TLSGD16_LO
:
6574 case R_PPC64_GOT_TLSGD16_HI
:
6575 case R_PPC64_GOT_TLSGD16_HA
:
6576 tls_type
= TLS_TLS
| TLS_GD
;
6579 case R_PPC64_GOT_TPREL16_DS
:
6580 case R_PPC64_GOT_TPREL16_LO_DS
:
6581 case R_PPC64_GOT_TPREL16_HI
:
6582 case R_PPC64_GOT_TPREL16_HA
:
6583 tls_type
= TLS_TLS
| TLS_TPREL
;
6586 case R_PPC64_GOT_DTPREL16_DS
:
6587 case R_PPC64_GOT_DTPREL16_LO_DS
:
6588 case R_PPC64_GOT_DTPREL16_HI
:
6589 case R_PPC64_GOT_DTPREL16_HA
:
6590 tls_type
= TLS_TLS
| TLS_DTPREL
;
6594 case R_PPC64_GOT16_DS
:
6595 case R_PPC64_GOT16_HA
:
6596 case R_PPC64_GOT16_HI
:
6597 case R_PPC64_GOT16_LO
:
6598 case R_PPC64_GOT16_LO_DS
:
6601 struct got_entry
*ent
;
6606 ent
= local_got_ents
[r_symndx
];
6608 for (; ent
!= NULL
; ent
= ent
->next
)
6609 if (ent
->addend
== rel
->r_addend
6610 && ent
->owner
== abfd
6611 && ent
->tls_type
== tls_type
)
6615 if (ent
->got
.refcount
> 0)
6616 ent
->got
.refcount
-= 1;
6620 case R_PPC64_PLT16_HA
:
6621 case R_PPC64_PLT16_HI
:
6622 case R_PPC64_PLT16_LO
:
6626 case R_PPC64_REL14_BRNTAKEN
:
6627 case R_PPC64_REL14_BRTAKEN
:
6631 struct plt_entry
*ent
;
6633 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6634 if (ent
->addend
== rel
->r_addend
)
6636 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6637 ent
->plt
.refcount
-= 1;
6648 /* The maximum size of .sfpr. */
6649 #define SFPR_MAX (218*4)
6651 struct sfpr_def_parms
6653 const char name
[12];
6654 unsigned char lo
, hi
;
6655 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6656 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6659 /* Auto-generate _save*, _rest* functions in .sfpr.
6660 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6664 sfpr_define (struct bfd_link_info
*info
,
6665 const struct sfpr_def_parms
*parm
,
6668 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6670 size_t len
= strlen (parm
->name
);
6671 bfd_boolean writing
= FALSE
;
6677 memcpy (sym
, parm
->name
, len
);
6680 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6682 struct ppc_link_hash_entry
*h
;
6684 sym
[len
+ 0] = i
/ 10 + '0';
6685 sym
[len
+ 1] = i
% 10 + '0';
6686 h
= (struct ppc_link_hash_entry
*)
6687 elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6688 if (stub_sec
!= NULL
)
6691 && h
->elf
.root
.type
== bfd_link_hash_defined
6692 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6694 struct elf_link_hash_entry
*s
;
6696 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6697 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6700 if (s
->root
.type
== bfd_link_hash_new
6701 || (s
->root
.type
= bfd_link_hash_defined
6702 && s
->root
.u
.def
.section
== stub_sec
))
6704 s
->root
.type
= bfd_link_hash_defined
;
6705 s
->root
.u
.def
.section
= stub_sec
;
6706 s
->root
.u
.def
.value
= (stub_sec
->size
6707 + h
->elf
.root
.u
.def
.value
);
6710 s
->ref_regular_nonweak
= 1;
6711 s
->forced_local
= 1;
6713 s
->root
.linker_def
= 1;
6721 if (!h
->elf
.def_regular
)
6723 h
->elf
.root
.type
= bfd_link_hash_defined
;
6724 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6725 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6726 h
->elf
.type
= STT_FUNC
;
6727 h
->elf
.def_regular
= 1;
6728 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6730 if (htab
->sfpr
->contents
== NULL
)
6732 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6733 if (htab
->sfpr
->contents
== NULL
)
6740 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6742 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6744 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6745 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6753 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6755 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6760 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6762 p
= savegpr0 (abfd
, p
, r
);
6763 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6765 bfd_put_32 (abfd
, BLR
, p
);
6770 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6772 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6777 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6779 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6781 p
= restgpr0 (abfd
, p
, r
);
6782 bfd_put_32 (abfd
, MTLR_R0
, p
);
6786 p
= restgpr0 (abfd
, p
, 30);
6787 p
= restgpr0 (abfd
, p
, 31);
6789 bfd_put_32 (abfd
, BLR
, p
);
6794 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6796 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6801 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6803 p
= savegpr1 (abfd
, p
, r
);
6804 bfd_put_32 (abfd
, BLR
, p
);
6809 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6811 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6816 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6818 p
= restgpr1 (abfd
, p
, r
);
6819 bfd_put_32 (abfd
, BLR
, p
);
6824 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6826 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6831 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6833 p
= savefpr (abfd
, p
, r
);
6834 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6836 bfd_put_32 (abfd
, BLR
, p
);
6841 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6843 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6848 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6850 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6852 p
= restfpr (abfd
, p
, r
);
6853 bfd_put_32 (abfd
, MTLR_R0
, p
);
6857 p
= restfpr (abfd
, p
, 30);
6858 p
= restfpr (abfd
, p
, 31);
6860 bfd_put_32 (abfd
, BLR
, p
);
6865 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6867 p
= savefpr (abfd
, p
, r
);
6868 bfd_put_32 (abfd
, BLR
, p
);
6873 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6875 p
= restfpr (abfd
, p
, r
);
6876 bfd_put_32 (abfd
, BLR
, p
);
6881 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6883 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6885 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6890 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6892 p
= savevr (abfd
, p
, r
);
6893 bfd_put_32 (abfd
, BLR
, p
);
6898 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6900 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6902 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6907 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6909 p
= restvr (abfd
, p
, r
);
6910 bfd_put_32 (abfd
, BLR
, p
);
6914 /* Called via elf_link_hash_traverse to transfer dynamic linking
6915 information on function code symbol entries to their corresponding
6916 function descriptor symbol entries. */
6919 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6921 struct bfd_link_info
*info
;
6922 struct ppc_link_hash_table
*htab
;
6923 struct plt_entry
*ent
;
6924 struct ppc_link_hash_entry
*fh
;
6925 struct ppc_link_hash_entry
*fdh
;
6926 bfd_boolean force_local
;
6928 fh
= (struct ppc_link_hash_entry
*) h
;
6929 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6933 htab
= ppc_hash_table (info
);
6937 /* Resolve undefined references to dot-symbols as the value
6938 in the function descriptor, if we have one in a regular object.
6939 This is to satisfy cases like ".quad .foo". Calls to functions
6940 in dynamic objects are handled elsewhere. */
6941 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6942 && fh
->was_undefined
6943 && (fdh
= defined_func_desc (fh
)) != NULL
6944 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6945 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6946 fdh
->elf
.root
.u
.def
.value
,
6947 &fh
->elf
.root
.u
.def
.section
,
6948 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6950 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6951 fh
->elf
.forced_local
= 1;
6952 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6953 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6956 /* If this is a function code symbol, transfer dynamic linking
6957 information to the function descriptor symbol. */
6961 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6962 if (ent
->plt
.refcount
> 0)
6965 || fh
->elf
.root
.root
.string
[0] != '.'
6966 || fh
->elf
.root
.root
.string
[1] == '\0')
6969 /* Find the corresponding function descriptor symbol. Create it
6970 as undefined if necessary. */
6972 fdh
= lookup_fdh (fh
, htab
);
6974 && !bfd_link_executable (info
)
6975 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6976 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6978 fdh
= make_fdh (info
, fh
);
6983 /* Fake function descriptors are made undefweak. If the function
6984 code symbol is strong undefined, make the fake sym the same.
6985 If the function code symbol is defined, then force the fake
6986 descriptor local; We can't support overriding of symbols in a
6987 shared library on a fake descriptor. */
6991 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6993 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6995 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6996 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6998 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6999 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
7001 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7006 && !fdh
->elf
.forced_local
7007 && (!bfd_link_executable (info
)
7008 || fdh
->elf
.def_dynamic
7009 || fdh
->elf
.ref_dynamic
7010 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
7011 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
7013 if (fdh
->elf
.dynindx
== -1)
7014 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7016 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7017 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7018 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7019 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7020 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
7022 move_plt_plist (fh
, fdh
);
7023 fdh
->elf
.needs_plt
= 1;
7025 fdh
->is_func_descriptor
= 1;
7030 /* Now that the info is on the function descriptor, clear the
7031 function code sym info. Any function code syms for which we
7032 don't have a definition in a regular file, we force local.
7033 This prevents a shared library from exporting syms that have
7034 been imported from another library. Function code syms that
7035 are really in the library we must leave global to prevent the
7036 linker dragging in a definition from a static library. */
7037 force_local
= (!fh
->elf
.def_regular
7039 || !fdh
->elf
.def_regular
7040 || fdh
->elf
.forced_local
);
7041 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7046 static const struct sfpr_def_parms save_res_funcs
[] =
7048 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7049 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7050 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7051 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7052 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7053 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7054 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7055 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7056 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7057 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7058 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7059 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7062 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7063 this hook to a) provide some gcc support functions, and b) transfer
7064 dynamic linking information gathered so far on function code symbol
7065 entries, to their corresponding function descriptor symbol entries. */
7068 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7069 struct bfd_link_info
*info
)
7071 struct ppc_link_hash_table
*htab
;
7074 htab
= ppc_hash_table (info
);
7078 if (!bfd_link_relocatable (info
)
7079 && htab
->elf
.hgot
!= NULL
)
7081 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7082 /* Make .TOC. defined so as to prevent it being made dynamic.
7083 The wrong value here is fixed later in ppc64_elf_set_toc. */
7084 if (!htab
->elf
.hgot
->def_regular
7085 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7087 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7088 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7089 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7090 htab
->elf
.hgot
->def_regular
= 1;
7091 htab
->elf
.hgot
->root
.linker_def
= 1;
7093 htab
->elf
.hgot
->type
= STT_OBJECT
;
7094 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7098 if (htab
->sfpr
== NULL
)
7099 /* We don't have any relocs. */
7102 /* Provide any missing _save* and _rest* functions. */
7103 htab
->sfpr
->size
= 0;
7104 if (htab
->params
->save_restore_funcs
)
7105 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7106 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7109 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7111 if (htab
->sfpr
->size
== 0)
7112 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7117 /* Return true if we have dynamic relocs that apply to read-only sections. */
7120 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7122 struct ppc_link_hash_entry
*eh
;
7123 struct elf_dyn_relocs
*p
;
7125 eh
= (struct ppc_link_hash_entry
*) h
;
7126 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7128 asection
*s
= p
->sec
->output_section
;
7130 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7136 /* Adjust a symbol defined by a dynamic object and referenced by a
7137 regular object. The current definition is in some section of the
7138 dynamic object, but we're not including those sections. We have to
7139 change the definition to something the rest of the link can
7143 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7144 struct elf_link_hash_entry
*h
)
7146 struct ppc_link_hash_table
*htab
;
7149 htab
= ppc_hash_table (info
);
7153 /* Deal with function syms. */
7154 if (h
->type
== STT_FUNC
7155 || h
->type
== STT_GNU_IFUNC
7158 /* Clear procedure linkage table information for any symbol that
7159 won't need a .plt entry. */
7160 struct plt_entry
*ent
;
7161 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7162 if (ent
->plt
.refcount
> 0)
7165 || (h
->type
!= STT_GNU_IFUNC
7166 && (SYMBOL_CALLS_LOCAL (info
, h
)
7167 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7168 && h
->root
.type
== bfd_link_hash_undefweak
)))
7169 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7171 h
->plt
.plist
= NULL
;
7173 h
->pointer_equality_needed
= 0;
7175 else if (abiversion (info
->output_bfd
) == 2)
7177 /* Taking a function's address in a read/write section
7178 doesn't require us to define the function symbol in the
7179 executable on a global entry stub. A dynamic reloc can
7181 if (h
->pointer_equality_needed
7182 && h
->type
!= STT_GNU_IFUNC
7183 && !readonly_dynrelocs (h
))
7185 h
->pointer_equality_needed
= 0;
7189 /* After adjust_dynamic_symbol, non_got_ref set in the
7190 non-shared case means that we have allocated space in
7191 .dynbss for the symbol and thus dyn_relocs for this
7192 symbol should be discarded.
7193 If we get here we know we are making a PLT entry for this
7194 symbol, and in an executable we'd normally resolve
7195 relocations against this symbol to the PLT entry. Allow
7196 dynamic relocs if the reference is weak, and the dynamic
7197 relocs will not cause text relocation. */
7198 else if (!h
->ref_regular_nonweak
7200 && h
->type
!= STT_GNU_IFUNC
7201 && !readonly_dynrelocs (h
))
7204 /* If making a plt entry, then we don't need copy relocs. */
7209 h
->plt
.plist
= NULL
;
7211 /* If this is a weak symbol, and there is a real definition, the
7212 processor independent code will have arranged for us to see the
7213 real definition first, and we can just use the same value. */
7214 if (h
->u
.weakdef
!= NULL
)
7216 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7217 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7218 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7219 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7220 if (ELIMINATE_COPY_RELOCS
)
7221 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7225 /* If we are creating a shared library, we must presume that the
7226 only references to the symbol are via the global offset table.
7227 For such cases we need not do anything here; the relocations will
7228 be handled correctly by relocate_section. */
7229 if (bfd_link_pic (info
))
7232 /* If there are no references to this symbol that do not use the
7233 GOT, we don't need to generate a copy reloc. */
7234 if (!h
->non_got_ref
)
7237 /* Don't generate a copy reloc for symbols defined in the executable. */
7238 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7241 /* If -z nocopyreloc was given, don't generate them either. */
7242 if (info
->nocopyreloc
)
7248 /* If we didn't find any dynamic relocs in read-only sections, then
7249 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7250 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7256 /* Protected variables do not work with .dynbss. The copy in
7257 .dynbss won't be used by the shared library with the protected
7258 definition for the variable. Text relocations are preferable
7259 to an incorrect program. */
7260 if (h
->protected_def
)
7266 if (h
->plt
.plist
!= NULL
)
7268 /* We should never get here, but unfortunately there are versions
7269 of gcc out there that improperly (for this ABI) put initialized
7270 function pointers, vtable refs and suchlike in read-only
7271 sections. Allow them to proceed, but warn that this might
7272 break at runtime. */
7273 info
->callbacks
->einfo
7274 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7275 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7276 h
->root
.root
.string
);
7279 /* This is a reference to a symbol defined by a dynamic object which
7280 is not a function. */
7282 /* We must allocate the symbol in our .dynbss section, which will
7283 become part of the .bss section of the executable. There will be
7284 an entry for this symbol in the .dynsym section. The dynamic
7285 object will contain position independent code, so all references
7286 from the dynamic object to this symbol will go through the global
7287 offset table. The dynamic linker will use the .dynsym entry to
7288 determine the address it must put in the global offset table, so
7289 both the dynamic object and the regular object will refer to the
7290 same memory location for the variable. */
7292 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7293 to copy the initial value out of the dynamic object and into the
7294 runtime process image. We need to remember the offset into the
7295 .rela.bss section we are going to use. */
7296 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7298 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7304 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7307 /* If given a function descriptor symbol, hide both the function code
7308 sym and the descriptor. */
7310 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7311 struct elf_link_hash_entry
*h
,
7312 bfd_boolean force_local
)
7314 struct ppc_link_hash_entry
*eh
;
7315 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7317 eh
= (struct ppc_link_hash_entry
*) h
;
7318 if (eh
->is_func_descriptor
)
7320 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7325 struct ppc_link_hash_table
*htab
;
7328 /* We aren't supposed to use alloca in BFD because on
7329 systems which do not have alloca the version in libiberty
7330 calls xmalloc, which might cause the program to crash
7331 when it runs out of memory. This function doesn't have a
7332 return status, so there's no way to gracefully return an
7333 error. So cheat. We know that string[-1] can be safely
7334 accessed; It's either a string in an ELF string table,
7335 or allocated in an objalloc structure. */
7337 p
= eh
->elf
.root
.root
.string
- 1;
7340 htab
= ppc_hash_table (info
);
7344 fh
= (struct ppc_link_hash_entry
*)
7345 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7348 /* Unfortunately, if it so happens that the string we were
7349 looking for was allocated immediately before this string,
7350 then we overwrote the string terminator. That's the only
7351 reason the lookup should fail. */
7354 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7355 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7357 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7358 fh
= (struct ppc_link_hash_entry
*)
7359 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7368 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7373 get_sym_h (struct elf_link_hash_entry
**hp
,
7374 Elf_Internal_Sym
**symp
,
7376 unsigned char **tls_maskp
,
7377 Elf_Internal_Sym
**locsymsp
,
7378 unsigned long r_symndx
,
7381 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7383 if (r_symndx
>= symtab_hdr
->sh_info
)
7385 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7386 struct elf_link_hash_entry
*h
;
7388 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7389 h
= elf_follow_link (h
);
7397 if (symsecp
!= NULL
)
7399 asection
*symsec
= NULL
;
7400 if (h
->root
.type
== bfd_link_hash_defined
7401 || h
->root
.type
== bfd_link_hash_defweak
)
7402 symsec
= h
->root
.u
.def
.section
;
7406 if (tls_maskp
!= NULL
)
7408 struct ppc_link_hash_entry
*eh
;
7410 eh
= (struct ppc_link_hash_entry
*) h
;
7411 *tls_maskp
= &eh
->tls_mask
;
7416 Elf_Internal_Sym
*sym
;
7417 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7419 if (locsyms
== NULL
)
7421 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7422 if (locsyms
== NULL
)
7423 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7424 symtab_hdr
->sh_info
,
7425 0, NULL
, NULL
, NULL
);
7426 if (locsyms
== NULL
)
7428 *locsymsp
= locsyms
;
7430 sym
= locsyms
+ r_symndx
;
7438 if (symsecp
!= NULL
)
7439 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7441 if (tls_maskp
!= NULL
)
7443 struct got_entry
**lgot_ents
;
7444 unsigned char *tls_mask
;
7447 lgot_ents
= elf_local_got_ents (ibfd
);
7448 if (lgot_ents
!= NULL
)
7450 struct plt_entry
**local_plt
= (struct plt_entry
**)
7451 (lgot_ents
+ symtab_hdr
->sh_info
);
7452 unsigned char *lgot_masks
= (unsigned char *)
7453 (local_plt
+ symtab_hdr
->sh_info
);
7454 tls_mask
= &lgot_masks
[r_symndx
];
7456 *tls_maskp
= tls_mask
;
7462 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7463 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7464 type suitable for optimization, and 1 otherwise. */
7467 get_tls_mask (unsigned char **tls_maskp
,
7468 unsigned long *toc_symndx
,
7469 bfd_vma
*toc_addend
,
7470 Elf_Internal_Sym
**locsymsp
,
7471 const Elf_Internal_Rela
*rel
,
7474 unsigned long r_symndx
;
7476 struct elf_link_hash_entry
*h
;
7477 Elf_Internal_Sym
*sym
;
7481 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7482 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7485 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7487 || ppc64_elf_section_data (sec
) == NULL
7488 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7491 /* Look inside a TOC section too. */
7494 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7495 off
= h
->root
.u
.def
.value
;
7498 off
= sym
->st_value
;
7499 off
+= rel
->r_addend
;
7500 BFD_ASSERT (off
% 8 == 0);
7501 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7502 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7503 if (toc_symndx
!= NULL
)
7504 *toc_symndx
= r_symndx
;
7505 if (toc_addend
!= NULL
)
7506 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7507 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7509 if ((h
== NULL
|| is_static_defined (h
))
7510 && (next_r
== -1 || next_r
== -2))
7515 /* Find (or create) an entry in the tocsave hash table. */
7517 static struct tocsave_entry
*
7518 tocsave_find (struct ppc_link_hash_table
*htab
,
7519 enum insert_option insert
,
7520 Elf_Internal_Sym
**local_syms
,
7521 const Elf_Internal_Rela
*irela
,
7524 unsigned long r_indx
;
7525 struct elf_link_hash_entry
*h
;
7526 Elf_Internal_Sym
*sym
;
7527 struct tocsave_entry ent
, *p
;
7529 struct tocsave_entry
**slot
;
7531 r_indx
= ELF64_R_SYM (irela
->r_info
);
7532 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7534 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7536 (*_bfd_error_handler
)
7537 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7542 ent
.offset
= h
->root
.u
.def
.value
;
7544 ent
.offset
= sym
->st_value
;
7545 ent
.offset
+= irela
->r_addend
;
7547 hash
= tocsave_htab_hash (&ent
);
7548 slot
= ((struct tocsave_entry
**)
7549 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7555 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7564 /* Adjust all global syms defined in opd sections. In gcc generated
7565 code for the old ABI, these will already have been done. */
7568 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7570 struct ppc_link_hash_entry
*eh
;
7572 struct _opd_sec_data
*opd
;
7574 if (h
->root
.type
== bfd_link_hash_indirect
)
7577 if (h
->root
.type
!= bfd_link_hash_defined
7578 && h
->root
.type
!= bfd_link_hash_defweak
)
7581 eh
= (struct ppc_link_hash_entry
*) h
;
7582 if (eh
->adjust_done
)
7585 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7586 opd
= get_opd_info (sym_sec
);
7587 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7589 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7592 /* This entry has been deleted. */
7593 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7596 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7597 if (discarded_section (dsec
))
7599 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7603 eh
->elf
.root
.u
.def
.value
= 0;
7604 eh
->elf
.root
.u
.def
.section
= dsec
;
7607 eh
->elf
.root
.u
.def
.value
+= adjust
;
7608 eh
->adjust_done
= 1;
7613 /* Handles decrementing dynamic reloc counts for the reloc specified by
7614 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7615 have already been determined. */
7618 dec_dynrel_count (bfd_vma r_info
,
7620 struct bfd_link_info
*info
,
7621 Elf_Internal_Sym
**local_syms
,
7622 struct elf_link_hash_entry
*h
,
7623 Elf_Internal_Sym
*sym
)
7625 enum elf_ppc64_reloc_type r_type
;
7626 asection
*sym_sec
= NULL
;
7628 /* Can this reloc be dynamic? This switch, and later tests here
7629 should be kept in sync with the code in check_relocs. */
7630 r_type
= ELF64_R_TYPE (r_info
);
7636 case R_PPC64_TPREL16
:
7637 case R_PPC64_TPREL16_LO
:
7638 case R_PPC64_TPREL16_HI
:
7639 case R_PPC64_TPREL16_HA
:
7640 case R_PPC64_TPREL16_DS
:
7641 case R_PPC64_TPREL16_LO_DS
:
7642 case R_PPC64_TPREL16_HIGH
:
7643 case R_PPC64_TPREL16_HIGHA
:
7644 case R_PPC64_TPREL16_HIGHER
:
7645 case R_PPC64_TPREL16_HIGHERA
:
7646 case R_PPC64_TPREL16_HIGHEST
:
7647 case R_PPC64_TPREL16_HIGHESTA
:
7648 if (!bfd_link_pic (info
))
7651 case R_PPC64_TPREL64
:
7652 case R_PPC64_DTPMOD64
:
7653 case R_PPC64_DTPREL64
:
7654 case R_PPC64_ADDR64
:
7658 case R_PPC64_ADDR14
:
7659 case R_PPC64_ADDR14_BRNTAKEN
:
7660 case R_PPC64_ADDR14_BRTAKEN
:
7661 case R_PPC64_ADDR16
:
7662 case R_PPC64_ADDR16_DS
:
7663 case R_PPC64_ADDR16_HA
:
7664 case R_PPC64_ADDR16_HI
:
7665 case R_PPC64_ADDR16_HIGH
:
7666 case R_PPC64_ADDR16_HIGHA
:
7667 case R_PPC64_ADDR16_HIGHER
:
7668 case R_PPC64_ADDR16_HIGHERA
:
7669 case R_PPC64_ADDR16_HIGHEST
:
7670 case R_PPC64_ADDR16_HIGHESTA
:
7671 case R_PPC64_ADDR16_LO
:
7672 case R_PPC64_ADDR16_LO_DS
:
7673 case R_PPC64_ADDR24
:
7674 case R_PPC64_ADDR32
:
7675 case R_PPC64_UADDR16
:
7676 case R_PPC64_UADDR32
:
7677 case R_PPC64_UADDR64
:
7682 if (local_syms
!= NULL
)
7684 unsigned long r_symndx
;
7685 bfd
*ibfd
= sec
->owner
;
7687 r_symndx
= ELF64_R_SYM (r_info
);
7688 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7692 if ((bfd_link_pic (info
)
7693 && (must_be_dyn_reloc (info
, r_type
)
7695 && (!SYMBOLIC_BIND (info
, h
)
7696 || h
->root
.type
== bfd_link_hash_defweak
7697 || !h
->def_regular
))))
7698 || (ELIMINATE_COPY_RELOCS
7699 && !bfd_link_pic (info
)
7701 && (h
->root
.type
== bfd_link_hash_defweak
7702 || !h
->def_regular
)))
7709 struct elf_dyn_relocs
*p
;
7710 struct elf_dyn_relocs
**pp
;
7711 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7713 /* elf_gc_sweep may have already removed all dyn relocs associated
7714 with local syms for a given section. Also, symbol flags are
7715 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7716 report a dynreloc miscount. */
7717 if (*pp
== NULL
&& info
->gc_sections
)
7720 while ((p
= *pp
) != NULL
)
7724 if (!must_be_dyn_reloc (info
, r_type
))
7736 struct ppc_dyn_relocs
*p
;
7737 struct ppc_dyn_relocs
**pp
;
7739 bfd_boolean is_ifunc
;
7741 if (local_syms
== NULL
)
7742 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7743 if (sym_sec
== NULL
)
7746 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7747 pp
= (struct ppc_dyn_relocs
**) vpp
;
7749 if (*pp
== NULL
&& info
->gc_sections
)
7752 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7753 while ((p
= *pp
) != NULL
)
7755 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7766 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7768 bfd_set_error (bfd_error_bad_value
);
7772 /* Remove unused Official Procedure Descriptor entries. Currently we
7773 only remove those associated with functions in discarded link-once
7774 sections, or weakly defined functions that have been overridden. It
7775 would be possible to remove many more entries for statically linked
7779 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7782 bfd_boolean some_edited
= FALSE
;
7783 asection
*need_pad
= NULL
;
7784 struct ppc_link_hash_table
*htab
;
7786 htab
= ppc_hash_table (info
);
7790 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7793 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7794 Elf_Internal_Shdr
*symtab_hdr
;
7795 Elf_Internal_Sym
*local_syms
;
7796 struct _opd_sec_data
*opd
;
7797 bfd_boolean need_edit
, add_aux_fields
, broken
;
7798 bfd_size_type cnt_16b
= 0;
7800 if (!is_ppc64_elf (ibfd
))
7803 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7804 if (sec
== NULL
|| sec
->size
== 0)
7807 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7810 if (sec
->output_section
== bfd_abs_section_ptr
)
7813 /* Look through the section relocs. */
7814 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7818 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7820 /* Read the relocations. */
7821 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7823 if (relstart
== NULL
)
7826 /* First run through the relocs to check they are sane, and to
7827 determine whether we need to edit this opd section. */
7831 relend
= relstart
+ sec
->reloc_count
;
7832 for (rel
= relstart
; rel
< relend
; )
7834 enum elf_ppc64_reloc_type r_type
;
7835 unsigned long r_symndx
;
7837 struct elf_link_hash_entry
*h
;
7838 Elf_Internal_Sym
*sym
;
7841 /* .opd contains an array of 16 or 24 byte entries. We're
7842 only interested in the reloc pointing to a function entry
7844 offset
= rel
->r_offset
;
7845 if (rel
+ 1 == relend
7846 || rel
[1].r_offset
!= offset
+ 8)
7848 /* If someone messes with .opd alignment then after a
7849 "ld -r" we might have padding in the middle of .opd.
7850 Also, there's nothing to prevent someone putting
7851 something silly in .opd with the assembler. No .opd
7852 optimization for them! */
7854 (*_bfd_error_handler
)
7855 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7860 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7861 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7863 (*_bfd_error_handler
)
7864 (_("%B: unexpected reloc type %u in .opd section"),
7870 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7871 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7875 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7877 const char *sym_name
;
7879 sym_name
= h
->root
.root
.string
;
7881 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7884 (*_bfd_error_handler
)
7885 (_("%B: undefined sym `%s' in .opd section"),
7891 /* opd entries are always for functions defined in the
7892 current input bfd. If the symbol isn't defined in the
7893 input bfd, then we won't be using the function in this
7894 bfd; It must be defined in a linkonce section in another
7895 bfd, or is weak. It's also possible that we are
7896 discarding the function due to a linker script /DISCARD/,
7897 which we test for via the output_section. */
7898 if (sym_sec
->owner
!= ibfd
7899 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7903 if (rel
+ 1 == relend
7904 || (rel
+ 2 < relend
7905 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7910 if (sec
->size
== offset
+ 24)
7915 if (sec
->size
== offset
+ 16)
7922 else if (rel
+ 1 < relend
7923 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7924 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7926 if (rel
[0].r_offset
== offset
+ 16)
7928 else if (rel
[0].r_offset
!= offset
+ 24)
7935 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7937 if (!broken
&& (need_edit
|| add_aux_fields
))
7939 Elf_Internal_Rela
*write_rel
;
7940 Elf_Internal_Shdr
*rel_hdr
;
7941 bfd_byte
*rptr
, *wptr
;
7942 bfd_byte
*new_contents
;
7945 new_contents
= NULL
;
7946 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7947 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7948 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7949 if (opd
->adjust
== NULL
)
7951 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7953 /* This seems a waste of time as input .opd sections are all
7954 zeros as generated by gcc, but I suppose there's no reason
7955 this will always be so. We might start putting something in
7956 the third word of .opd entries. */
7957 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7960 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7965 if (local_syms
!= NULL
7966 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7968 if (elf_section_data (sec
)->relocs
!= relstart
)
7972 sec
->contents
= loc
;
7973 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7976 elf_section_data (sec
)->relocs
= relstart
;
7978 new_contents
= sec
->contents
;
7981 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7982 if (new_contents
== NULL
)
7986 wptr
= new_contents
;
7987 rptr
= sec
->contents
;
7988 write_rel
= relstart
;
7989 for (rel
= relstart
; rel
< relend
; )
7991 unsigned long r_symndx
;
7993 struct elf_link_hash_entry
*h
;
7994 struct ppc_link_hash_entry
*fdh
= NULL
;
7995 Elf_Internal_Sym
*sym
;
7997 Elf_Internal_Rela
*next_rel
;
8000 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8001 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8006 if (next_rel
+ 1 == relend
8007 || (next_rel
+ 2 < relend
8008 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8011 /* See if the .opd entry is full 24 byte or
8012 16 byte (with fd_aux entry overlapped with next
8015 if (next_rel
== relend
)
8017 if (sec
->size
== rel
->r_offset
+ 16)
8020 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8024 && h
->root
.root
.string
[0] == '.')
8026 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
8028 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
8029 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8033 skip
= (sym_sec
->owner
!= ibfd
8034 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8037 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8039 /* Arrange for the function descriptor sym
8041 fdh
->elf
.root
.u
.def
.value
= 0;
8042 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8044 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8046 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8051 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8055 if (++rel
== next_rel
)
8058 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8059 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8066 /* We'll be keeping this opd entry. */
8071 /* Redefine the function descriptor symbol to
8072 this location in the opd section. It is
8073 necessary to update the value here rather
8074 than using an array of adjustments as we do
8075 for local symbols, because various places
8076 in the generic ELF code use the value
8077 stored in u.def.value. */
8078 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8079 fdh
->adjust_done
= 1;
8082 /* Local syms are a bit tricky. We could
8083 tweak them as they can be cached, but
8084 we'd need to look through the local syms
8085 for the function descriptor sym which we
8086 don't have at the moment. So keep an
8087 array of adjustments. */
8088 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8089 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8092 memcpy (wptr
, rptr
, opd_ent_size
);
8093 wptr
+= opd_ent_size
;
8094 if (add_aux_fields
&& opd_ent_size
== 16)
8096 memset (wptr
, '\0', 8);
8100 /* We need to adjust any reloc offsets to point to the
8102 for ( ; rel
!= next_rel
; ++rel
)
8104 rel
->r_offset
+= adjust
;
8105 if (write_rel
!= rel
)
8106 memcpy (write_rel
, rel
, sizeof (*rel
));
8111 rptr
+= opd_ent_size
;
8114 sec
->size
= wptr
- new_contents
;
8115 sec
->reloc_count
= write_rel
- relstart
;
8118 free (sec
->contents
);
8119 sec
->contents
= new_contents
;
8122 /* Fudge the header size too, as this is used later in
8123 elf_bfd_final_link if we are emitting relocs. */
8124 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8125 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8128 else if (elf_section_data (sec
)->relocs
!= relstart
)
8131 if (local_syms
!= NULL
8132 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8134 if (!info
->keep_memory
)
8137 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8142 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8144 /* If we are doing a final link and the last .opd entry is just 16 byte
8145 long, add a 8 byte padding after it. */
8146 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8150 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8152 BFD_ASSERT (need_pad
->size
> 0);
8154 p
= bfd_malloc (need_pad
->size
+ 8);
8158 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8159 p
, 0, need_pad
->size
))
8162 need_pad
->contents
= p
;
8163 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8167 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8171 need_pad
->contents
= p
;
8174 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8175 need_pad
->size
+= 8;
8181 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8184 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8186 struct ppc_link_hash_table
*htab
;
8188 htab
= ppc_hash_table (info
);
8192 if (abiversion (info
->output_bfd
) == 1)
8195 if (htab
->params
->no_multi_toc
)
8196 htab
->do_multi_toc
= 0;
8197 else if (!htab
->do_multi_toc
)
8198 htab
->params
->no_multi_toc
= 1;
8200 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8201 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8202 FALSE
, FALSE
, TRUE
));
8203 /* Move dynamic linking info to the function descriptor sym. */
8204 if (htab
->tls_get_addr
!= NULL
)
8205 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8206 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8207 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8208 FALSE
, FALSE
, TRUE
));
8209 if (htab
->params
->tls_get_addr_opt
)
8211 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8213 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8214 FALSE
, FALSE
, TRUE
);
8216 func_desc_adjust (opt
, info
);
8217 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8218 FALSE
, FALSE
, TRUE
);
8220 && (opt_fd
->root
.type
== bfd_link_hash_defined
8221 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8223 /* If glibc supports an optimized __tls_get_addr call stub,
8224 signalled by the presence of __tls_get_addr_opt, and we'll
8225 be calling __tls_get_addr via a plt call stub, then
8226 make __tls_get_addr point to __tls_get_addr_opt. */
8227 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8228 if (htab
->elf
.dynamic_sections_created
8230 && (tga_fd
->type
== STT_FUNC
8231 || tga_fd
->needs_plt
)
8232 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8233 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8234 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8236 struct plt_entry
*ent
;
8238 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8239 if (ent
->plt
.refcount
> 0)
8243 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8244 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8245 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8246 if (opt_fd
->dynindx
!= -1)
8248 /* Use __tls_get_addr_opt in dynamic relocations. */
8249 opt_fd
->dynindx
= -1;
8250 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8251 opt_fd
->dynstr_index
);
8252 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8255 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8256 tga
= &htab
->tls_get_addr
->elf
;
8257 if (opt
!= NULL
&& tga
!= NULL
)
8259 tga
->root
.type
= bfd_link_hash_indirect
;
8260 tga
->root
.u
.i
.link
= &opt
->root
;
8261 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8262 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8264 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8266 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8267 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8268 if (htab
->tls_get_addr
!= NULL
)
8270 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8271 htab
->tls_get_addr
->is_func
= 1;
8276 else if (htab
->params
->tls_get_addr_opt
< 0)
8277 htab
->params
->tls_get_addr_opt
= 0;
8279 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8282 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8286 branch_reloc_hash_match (const bfd
*ibfd
,
8287 const Elf_Internal_Rela
*rel
,
8288 const struct ppc_link_hash_entry
*hash1
,
8289 const struct ppc_link_hash_entry
*hash2
)
8291 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8292 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8293 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8295 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8297 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8298 struct elf_link_hash_entry
*h
;
8300 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8301 h
= elf_follow_link (h
);
8302 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8308 /* Run through all the TLS relocs looking for optimization
8309 opportunities. The linker has been hacked (see ppc64elf.em) to do
8310 a preliminary section layout so that we know the TLS segment
8311 offsets. We can't optimize earlier because some optimizations need
8312 to know the tp offset, and we need to optimize before allocating
8313 dynamic relocations. */
8316 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8320 struct ppc_link_hash_table
*htab
;
8321 unsigned char *toc_ref
;
8324 if (!bfd_link_executable (info
))
8327 htab
= ppc_hash_table (info
);
8331 /* Make two passes over the relocs. On the first pass, mark toc
8332 entries involved with tls relocs, and check that tls relocs
8333 involved in setting up a tls_get_addr call are indeed followed by
8334 such a call. If they are not, we can't do any tls optimization.
8335 On the second pass twiddle tls_mask flags to notify
8336 relocate_section that optimization can be done, and adjust got
8337 and plt refcounts. */
8339 for (pass
= 0; pass
< 2; ++pass
)
8340 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8342 Elf_Internal_Sym
*locsyms
= NULL
;
8343 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8345 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8346 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8348 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8349 bfd_boolean found_tls_get_addr_arg
= 0;
8351 /* Read the relocations. */
8352 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8354 if (relstart
== NULL
)
8360 relend
= relstart
+ sec
->reloc_count
;
8361 for (rel
= relstart
; rel
< relend
; rel
++)
8363 enum elf_ppc64_reloc_type r_type
;
8364 unsigned long r_symndx
;
8365 struct elf_link_hash_entry
*h
;
8366 Elf_Internal_Sym
*sym
;
8368 unsigned char *tls_mask
;
8369 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8371 bfd_boolean ok_tprel
, is_local
;
8372 long toc_ref_index
= 0;
8373 int expecting_tls_get_addr
= 0;
8374 bfd_boolean ret
= FALSE
;
8376 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8377 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8381 if (elf_section_data (sec
)->relocs
!= relstart
)
8383 if (toc_ref
!= NULL
)
8386 && (elf_symtab_hdr (ibfd
).contents
8387 != (unsigned char *) locsyms
))
8394 if (h
->root
.type
== bfd_link_hash_defined
8395 || h
->root
.type
== bfd_link_hash_defweak
)
8396 value
= h
->root
.u
.def
.value
;
8397 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8401 found_tls_get_addr_arg
= 0;
8406 /* Symbols referenced by TLS relocs must be of type
8407 STT_TLS. So no need for .opd local sym adjust. */
8408 value
= sym
->st_value
;
8417 && h
->root
.type
== bfd_link_hash_undefweak
)
8419 else if (sym_sec
!= NULL
8420 && sym_sec
->output_section
!= NULL
)
8422 value
+= sym_sec
->output_offset
;
8423 value
+= sym_sec
->output_section
->vma
;
8424 value
-= htab
->elf
.tls_sec
->vma
;
8425 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8426 < (bfd_vma
) 1 << 32);
8430 r_type
= ELF64_R_TYPE (rel
->r_info
);
8431 /* If this section has old-style __tls_get_addr calls
8432 without marker relocs, then check that each
8433 __tls_get_addr call reloc is preceded by a reloc
8434 that conceivably belongs to the __tls_get_addr arg
8435 setup insn. If we don't find matching arg setup
8436 relocs, don't do any tls optimization. */
8438 && sec
->has_tls_get_addr_call
8440 && (h
== &htab
->tls_get_addr
->elf
8441 || h
== &htab
->tls_get_addr_fd
->elf
)
8442 && !found_tls_get_addr_arg
8443 && is_branch_reloc (r_type
))
8445 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8446 "TLS optimization disabled\n"),
8447 ibfd
, sec
, rel
->r_offset
);
8452 found_tls_get_addr_arg
= 0;
8455 case R_PPC64_GOT_TLSLD16
:
8456 case R_PPC64_GOT_TLSLD16_LO
:
8457 expecting_tls_get_addr
= 1;
8458 found_tls_get_addr_arg
= 1;
8461 case R_PPC64_GOT_TLSLD16_HI
:
8462 case R_PPC64_GOT_TLSLD16_HA
:
8463 /* These relocs should never be against a symbol
8464 defined in a shared lib. Leave them alone if
8465 that turns out to be the case. */
8472 tls_type
= TLS_TLS
| TLS_LD
;
8475 case R_PPC64_GOT_TLSGD16
:
8476 case R_PPC64_GOT_TLSGD16_LO
:
8477 expecting_tls_get_addr
= 1;
8478 found_tls_get_addr_arg
= 1;
8481 case R_PPC64_GOT_TLSGD16_HI
:
8482 case R_PPC64_GOT_TLSGD16_HA
:
8488 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8490 tls_type
= TLS_TLS
| TLS_GD
;
8493 case R_PPC64_GOT_TPREL16_DS
:
8494 case R_PPC64_GOT_TPREL16_LO_DS
:
8495 case R_PPC64_GOT_TPREL16_HI
:
8496 case R_PPC64_GOT_TPREL16_HA
:
8501 tls_clear
= TLS_TPREL
;
8502 tls_type
= TLS_TLS
| TLS_TPREL
;
8509 found_tls_get_addr_arg
= 1;
8514 case R_PPC64_TOC16_LO
:
8515 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8518 /* Mark this toc entry as referenced by a TLS
8519 code sequence. We can do that now in the
8520 case of R_PPC64_TLS, and after checking for
8521 tls_get_addr for the TOC16 relocs. */
8522 if (toc_ref
== NULL
)
8523 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8524 if (toc_ref
== NULL
)
8528 value
= h
->root
.u
.def
.value
;
8530 value
= sym
->st_value
;
8531 value
+= rel
->r_addend
;
8534 BFD_ASSERT (value
< toc
->size
8535 && toc
->output_offset
% 8 == 0);
8536 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8537 if (r_type
== R_PPC64_TLS
8538 || r_type
== R_PPC64_TLSGD
8539 || r_type
== R_PPC64_TLSLD
)
8541 toc_ref
[toc_ref_index
] = 1;
8545 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8550 expecting_tls_get_addr
= 2;
8553 case R_PPC64_TPREL64
:
8557 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8562 tls_set
= TLS_EXPLICIT
;
8563 tls_clear
= TLS_TPREL
;
8568 case R_PPC64_DTPMOD64
:
8572 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8574 if (rel
+ 1 < relend
8576 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8577 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8581 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8584 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8593 tls_set
= TLS_EXPLICIT
;
8604 if (!expecting_tls_get_addr
8605 || !sec
->has_tls_get_addr_call
)
8608 if (rel
+ 1 < relend
8609 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8611 htab
->tls_get_addr_fd
))
8613 if (expecting_tls_get_addr
== 2)
8615 /* Check for toc tls entries. */
8616 unsigned char *toc_tls
;
8619 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8624 if (toc_tls
!= NULL
)
8626 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8627 found_tls_get_addr_arg
= 1;
8629 toc_ref
[toc_ref_index
] = 1;
8635 if (expecting_tls_get_addr
!= 1)
8638 /* Uh oh, we didn't find the expected call. We
8639 could just mark this symbol to exclude it
8640 from tls optimization but it's safer to skip
8641 the entire optimization. */
8642 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8643 "TLS optimization disabled\n"),
8644 ibfd
, sec
, rel
->r_offset
);
8649 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8651 struct plt_entry
*ent
;
8652 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8655 if (ent
->addend
== 0)
8657 if (ent
->plt
.refcount
> 0)
8659 ent
->plt
.refcount
-= 1;
8660 expecting_tls_get_addr
= 0;
8666 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8668 struct plt_entry
*ent
;
8669 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8672 if (ent
->addend
== 0)
8674 if (ent
->plt
.refcount
> 0)
8675 ent
->plt
.refcount
-= 1;
8683 if ((tls_set
& TLS_EXPLICIT
) == 0)
8685 struct got_entry
*ent
;
8687 /* Adjust got entry for this reloc. */
8691 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8693 for (; ent
!= NULL
; ent
= ent
->next
)
8694 if (ent
->addend
== rel
->r_addend
8695 && ent
->owner
== ibfd
8696 && ent
->tls_type
== tls_type
)
8703 /* We managed to get rid of a got entry. */
8704 if (ent
->got
.refcount
> 0)
8705 ent
->got
.refcount
-= 1;
8710 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8711 we'll lose one or two dyn relocs. */
8712 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8716 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8718 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8724 *tls_mask
|= tls_set
;
8725 *tls_mask
&= ~tls_clear
;
8728 if (elf_section_data (sec
)->relocs
!= relstart
)
8733 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8735 if (!info
->keep_memory
)
8738 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8742 if (toc_ref
!= NULL
)
8747 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8748 the values of any global symbols in a toc section that has been
8749 edited. Globals in toc sections should be a rarity, so this function
8750 sets a flag if any are found in toc sections other than the one just
8751 edited, so that futher hash table traversals can be avoided. */
8753 struct adjust_toc_info
8756 unsigned long *skip
;
8757 bfd_boolean global_toc_syms
;
8760 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8763 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8765 struct ppc_link_hash_entry
*eh
;
8766 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8769 if (h
->root
.type
!= bfd_link_hash_defined
8770 && h
->root
.type
!= bfd_link_hash_defweak
)
8773 eh
= (struct ppc_link_hash_entry
*) h
;
8774 if (eh
->adjust_done
)
8777 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8779 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8780 i
= toc_inf
->toc
->rawsize
>> 3;
8782 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8784 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8786 (*_bfd_error_handler
)
8787 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8790 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8791 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8794 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8795 eh
->adjust_done
= 1;
8797 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8798 toc_inf
->global_toc_syms
= TRUE
;
8803 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8806 ok_lo_toc_insn (unsigned int insn
)
8808 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8809 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8810 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8811 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8812 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8813 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8814 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8815 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8816 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8817 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8818 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8819 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8820 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8821 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8822 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8824 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8825 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8826 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8829 /* Examine all relocs referencing .toc sections in order to remove
8830 unused .toc entries. */
8833 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8836 struct adjust_toc_info toc_inf
;
8837 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8839 htab
->do_toc_opt
= 1;
8840 toc_inf
.global_toc_syms
= TRUE
;
8841 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8843 asection
*toc
, *sec
;
8844 Elf_Internal_Shdr
*symtab_hdr
;
8845 Elf_Internal_Sym
*local_syms
;
8846 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8847 unsigned long *skip
, *drop
;
8848 unsigned char *used
;
8849 unsigned char *keep
, last
, some_unused
;
8851 if (!is_ppc64_elf (ibfd
))
8854 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8857 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8858 || discarded_section (toc
))
8863 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8865 /* Look at sections dropped from the final link. */
8868 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8870 if (sec
->reloc_count
== 0
8871 || !discarded_section (sec
)
8872 || get_opd_info (sec
)
8873 || (sec
->flags
& SEC_ALLOC
) == 0
8874 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8877 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8878 if (relstart
== NULL
)
8881 /* Run through the relocs to see which toc entries might be
8883 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8885 enum elf_ppc64_reloc_type r_type
;
8886 unsigned long r_symndx
;
8888 struct elf_link_hash_entry
*h
;
8889 Elf_Internal_Sym
*sym
;
8892 r_type
= ELF64_R_TYPE (rel
->r_info
);
8899 case R_PPC64_TOC16_LO
:
8900 case R_PPC64_TOC16_HI
:
8901 case R_PPC64_TOC16_HA
:
8902 case R_PPC64_TOC16_DS
:
8903 case R_PPC64_TOC16_LO_DS
:
8907 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8908 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8916 val
= h
->root
.u
.def
.value
;
8918 val
= sym
->st_value
;
8919 val
+= rel
->r_addend
;
8921 if (val
>= toc
->size
)
8924 /* Anything in the toc ought to be aligned to 8 bytes.
8925 If not, don't mark as unused. */
8931 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8936 skip
[val
>> 3] = ref_from_discarded
;
8939 if (elf_section_data (sec
)->relocs
!= relstart
)
8943 /* For largetoc loads of address constants, we can convert
8944 . addis rx,2,addr@got@ha
8945 . ld ry,addr@got@l(rx)
8947 . addis rx,2,addr@toc@ha
8948 . addi ry,rx,addr@toc@l
8949 when addr is within 2G of the toc pointer. This then means
8950 that the word storing "addr" in the toc is no longer needed. */
8952 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8953 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8954 && toc
->reloc_count
!= 0)
8956 /* Read toc relocs. */
8957 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8959 if (toc_relocs
== NULL
)
8962 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8964 enum elf_ppc64_reloc_type r_type
;
8965 unsigned long r_symndx
;
8967 struct elf_link_hash_entry
*h
;
8968 Elf_Internal_Sym
*sym
;
8971 r_type
= ELF64_R_TYPE (rel
->r_info
);
8972 if (r_type
!= R_PPC64_ADDR64
)
8975 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8976 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8981 || sym_sec
->output_section
== NULL
8982 || discarded_section (sym_sec
))
8985 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8990 if (h
->type
== STT_GNU_IFUNC
)
8992 val
= h
->root
.u
.def
.value
;
8996 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8998 val
= sym
->st_value
;
9000 val
+= rel
->r_addend
;
9001 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9003 /* We don't yet know the exact toc pointer value, but we
9004 know it will be somewhere in the toc section. Don't
9005 optimize if the difference from any possible toc
9006 pointer is outside [ff..f80008000, 7fff7fff]. */
9007 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9008 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9011 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9012 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9017 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9022 skip
[rel
->r_offset
>> 3]
9023 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9030 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9034 if (local_syms
!= NULL
9035 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9039 && elf_section_data (sec
)->relocs
!= relstart
)
9041 if (toc_relocs
!= NULL
9042 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9049 /* Now check all kept sections that might reference the toc.
9050 Check the toc itself last. */
9051 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9054 sec
= (sec
== toc
? NULL
9055 : sec
->next
== NULL
? toc
9056 : sec
->next
== toc
&& toc
->next
? toc
->next
9061 if (sec
->reloc_count
== 0
9062 || discarded_section (sec
)
9063 || get_opd_info (sec
)
9064 || (sec
->flags
& SEC_ALLOC
) == 0
9065 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9068 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9070 if (relstart
== NULL
)
9076 /* Mark toc entries referenced as used. */
9080 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9082 enum elf_ppc64_reloc_type r_type
;
9083 unsigned long r_symndx
;
9085 struct elf_link_hash_entry
*h
;
9086 Elf_Internal_Sym
*sym
;
9088 enum {no_check
, check_lo
, check_ha
} insn_check
;
9090 r_type
= ELF64_R_TYPE (rel
->r_info
);
9094 insn_check
= no_check
;
9097 case R_PPC64_GOT_TLSLD16_HA
:
9098 case R_PPC64_GOT_TLSGD16_HA
:
9099 case R_PPC64_GOT_TPREL16_HA
:
9100 case R_PPC64_GOT_DTPREL16_HA
:
9101 case R_PPC64_GOT16_HA
:
9102 case R_PPC64_TOC16_HA
:
9103 insn_check
= check_ha
;
9106 case R_PPC64_GOT_TLSLD16_LO
:
9107 case R_PPC64_GOT_TLSGD16_LO
:
9108 case R_PPC64_GOT_TPREL16_LO_DS
:
9109 case R_PPC64_GOT_DTPREL16_LO_DS
:
9110 case R_PPC64_GOT16_LO
:
9111 case R_PPC64_GOT16_LO_DS
:
9112 case R_PPC64_TOC16_LO
:
9113 case R_PPC64_TOC16_LO_DS
:
9114 insn_check
= check_lo
;
9118 if (insn_check
!= no_check
)
9120 bfd_vma off
= rel
->r_offset
& ~3;
9121 unsigned char buf
[4];
9124 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9129 insn
= bfd_get_32 (ibfd
, buf
);
9130 if (insn_check
== check_lo
9131 ? !ok_lo_toc_insn (insn
)
9132 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9133 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9137 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9138 sprintf (str
, "%#08x", insn
);
9139 info
->callbacks
->einfo
9140 (_("%P: %H: toc optimization is not supported for"
9141 " %s instruction.\n"),
9142 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9149 case R_PPC64_TOC16_LO
:
9150 case R_PPC64_TOC16_HI
:
9151 case R_PPC64_TOC16_HA
:
9152 case R_PPC64_TOC16_DS
:
9153 case R_PPC64_TOC16_LO_DS
:
9154 /* In case we're taking addresses of toc entries. */
9155 case R_PPC64_ADDR64
:
9162 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9163 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9174 val
= h
->root
.u
.def
.value
;
9176 val
= sym
->st_value
;
9177 val
+= rel
->r_addend
;
9179 if (val
>= toc
->size
)
9182 if ((skip
[val
>> 3] & can_optimize
) != 0)
9189 case R_PPC64_TOC16_HA
:
9192 case R_PPC64_TOC16_LO_DS
:
9193 off
= rel
->r_offset
;
9194 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9195 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9201 if ((opc
& (0x3f << 2)) == (58u << 2))
9206 /* Wrong sort of reloc, or not a ld. We may
9207 as well clear ref_from_discarded too. */
9214 /* For the toc section, we only mark as used if this
9215 entry itself isn't unused. */
9216 else if ((used
[rel
->r_offset
>> 3]
9217 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9220 /* Do all the relocs again, to catch reference
9229 if (elf_section_data (sec
)->relocs
!= relstart
)
9233 /* Merge the used and skip arrays. Assume that TOC
9234 doublewords not appearing as either used or unused belong
9235 to to an entry more than one doubleword in size. */
9236 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9237 drop
< skip
+ (toc
->size
+ 7) / 8;
9242 *drop
&= ~ref_from_discarded
;
9243 if ((*drop
& can_optimize
) != 0)
9247 else if ((*drop
& ref_from_discarded
) != 0)
9250 last
= ref_from_discarded
;
9260 bfd_byte
*contents
, *src
;
9262 Elf_Internal_Sym
*sym
;
9263 bfd_boolean local_toc_syms
= FALSE
;
9265 /* Shuffle the toc contents, and at the same time convert the
9266 skip array from booleans into offsets. */
9267 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9270 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9272 for (src
= contents
, off
= 0, drop
= skip
;
9273 src
< contents
+ toc
->size
;
9276 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9281 memcpy (src
- off
, src
, 8);
9285 toc
->rawsize
= toc
->size
;
9286 toc
->size
= src
- contents
- off
;
9288 /* Adjust addends for relocs against the toc section sym,
9289 and optimize any accesses we can. */
9290 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9292 if (sec
->reloc_count
== 0
9293 || discarded_section (sec
))
9296 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9298 if (relstart
== NULL
)
9301 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9303 enum elf_ppc64_reloc_type r_type
;
9304 unsigned long r_symndx
;
9306 struct elf_link_hash_entry
*h
;
9309 r_type
= ELF64_R_TYPE (rel
->r_info
);
9316 case R_PPC64_TOC16_LO
:
9317 case R_PPC64_TOC16_HI
:
9318 case R_PPC64_TOC16_HA
:
9319 case R_PPC64_TOC16_DS
:
9320 case R_PPC64_TOC16_LO_DS
:
9321 case R_PPC64_ADDR64
:
9325 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9326 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9334 val
= h
->root
.u
.def
.value
;
9337 val
= sym
->st_value
;
9339 local_toc_syms
= TRUE
;
9342 val
+= rel
->r_addend
;
9344 if (val
> toc
->rawsize
)
9346 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9348 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9350 Elf_Internal_Rela
*tocrel
9351 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9352 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9356 case R_PPC64_TOC16_HA
:
9357 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9360 case R_PPC64_TOC16_LO_DS
:
9361 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9365 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9367 info
->callbacks
->einfo
9368 (_("%P: %H: %s references "
9369 "optimized away TOC entry\n"),
9370 ibfd
, sec
, rel
->r_offset
,
9371 ppc64_elf_howto_table
[r_type
]->name
);
9372 bfd_set_error (bfd_error_bad_value
);
9375 rel
->r_addend
= tocrel
->r_addend
;
9376 elf_section_data (sec
)->relocs
= relstart
;
9380 if (h
!= NULL
|| sym
->st_value
!= 0)
9383 rel
->r_addend
-= skip
[val
>> 3];
9384 elf_section_data (sec
)->relocs
= relstart
;
9387 if (elf_section_data (sec
)->relocs
!= relstart
)
9391 /* We shouldn't have local or global symbols defined in the TOC,
9392 but handle them anyway. */
9393 if (local_syms
!= NULL
)
9394 for (sym
= local_syms
;
9395 sym
< local_syms
+ symtab_hdr
->sh_info
;
9397 if (sym
->st_value
!= 0
9398 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9402 if (sym
->st_value
> toc
->rawsize
)
9403 i
= toc
->rawsize
>> 3;
9405 i
= sym
->st_value
>> 3;
9407 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9410 (*_bfd_error_handler
)
9411 (_("%s defined on removed toc entry"),
9412 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9415 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9416 sym
->st_value
= (bfd_vma
) i
<< 3;
9419 sym
->st_value
-= skip
[i
];
9420 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9423 /* Adjust any global syms defined in this toc input section. */
9424 if (toc_inf
.global_toc_syms
)
9427 toc_inf
.skip
= skip
;
9428 toc_inf
.global_toc_syms
= FALSE
;
9429 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9433 if (toc
->reloc_count
!= 0)
9435 Elf_Internal_Shdr
*rel_hdr
;
9436 Elf_Internal_Rela
*wrel
;
9439 /* Remove unused toc relocs, and adjust those we keep. */
9440 if (toc_relocs
== NULL
)
9441 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9443 if (toc_relocs
== NULL
)
9447 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9448 if ((skip
[rel
->r_offset
>> 3]
9449 & (ref_from_discarded
| can_optimize
)) == 0)
9451 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9452 wrel
->r_info
= rel
->r_info
;
9453 wrel
->r_addend
= rel
->r_addend
;
9456 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9457 &local_syms
, NULL
, NULL
))
9460 elf_section_data (toc
)->relocs
= toc_relocs
;
9461 toc
->reloc_count
= wrel
- toc_relocs
;
9462 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9463 sz
= rel_hdr
->sh_entsize
;
9464 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9467 else if (toc_relocs
!= NULL
9468 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9471 if (local_syms
!= NULL
9472 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9474 if (!info
->keep_memory
)
9477 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9485 /* Return true iff input section I references the TOC using
9486 instructions limited to +/-32k offsets. */
9489 ppc64_elf_has_small_toc_reloc (asection
*i
)
9491 return (is_ppc64_elf (i
->owner
)
9492 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9495 /* Allocate space for one GOT entry. */
9498 allocate_got (struct elf_link_hash_entry
*h
,
9499 struct bfd_link_info
*info
,
9500 struct got_entry
*gent
)
9502 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9504 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9505 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9507 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9508 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9509 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9511 gent
->got
.offset
= got
->size
;
9512 got
->size
+= entsize
;
9514 dyn
= htab
->elf
.dynamic_sections_created
;
9515 if (h
->type
== STT_GNU_IFUNC
)
9517 htab
->elf
.irelplt
->size
+= rentsize
;
9518 htab
->got_reli_size
+= rentsize
;
9520 else if ((bfd_link_pic (info
)
9521 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9522 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9523 || h
->root
.type
!= bfd_link_hash_undefweak
))
9525 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9526 relgot
->size
+= rentsize
;
9530 /* This function merges got entries in the same toc group. */
9533 merge_got_entries (struct got_entry
**pent
)
9535 struct got_entry
*ent
, *ent2
;
9537 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9538 if (!ent
->is_indirect
)
9539 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9540 if (!ent2
->is_indirect
9541 && ent2
->addend
== ent
->addend
9542 && ent2
->tls_type
== ent
->tls_type
9543 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9545 ent2
->is_indirect
= TRUE
;
9546 ent2
->got
.ent
= ent
;
9550 /* Allocate space in .plt, .got and associated reloc sections for
9554 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9556 struct bfd_link_info
*info
;
9557 struct ppc_link_hash_table
*htab
;
9559 struct ppc_link_hash_entry
*eh
;
9560 struct elf_dyn_relocs
*p
;
9561 struct got_entry
**pgent
, *gent
;
9563 if (h
->root
.type
== bfd_link_hash_indirect
)
9566 info
= (struct bfd_link_info
*) inf
;
9567 htab
= ppc_hash_table (info
);
9571 if ((htab
->elf
.dynamic_sections_created
9573 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
9574 || h
->type
== STT_GNU_IFUNC
)
9576 struct plt_entry
*pent
;
9577 bfd_boolean doneone
= FALSE
;
9578 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9579 if (pent
->plt
.refcount
> 0)
9581 if (!htab
->elf
.dynamic_sections_created
9582 || h
->dynindx
== -1)
9585 pent
->plt
.offset
= s
->size
;
9586 s
->size
+= PLT_ENTRY_SIZE (htab
);
9587 s
= htab
->elf
.irelplt
;
9591 /* If this is the first .plt entry, make room for the special
9595 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9597 pent
->plt
.offset
= s
->size
;
9599 /* Make room for this entry. */
9600 s
->size
+= PLT_ENTRY_SIZE (htab
);
9602 /* Make room for the .glink code. */
9605 s
->size
+= GLINK_CALL_STUB_SIZE
;
9608 /* We need bigger stubs past index 32767. */
9609 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9616 /* We also need to make an entry in the .rela.plt section. */
9617 s
= htab
->elf
.srelplt
;
9619 s
->size
+= sizeof (Elf64_External_Rela
);
9623 pent
->plt
.offset
= (bfd_vma
) -1;
9626 h
->plt
.plist
= NULL
;
9632 h
->plt
.plist
= NULL
;
9636 eh
= (struct ppc_link_hash_entry
*) h
;
9637 /* Run through the TLS GD got entries first if we're changing them
9639 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9640 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9641 if (gent
->got
.refcount
> 0
9642 && (gent
->tls_type
& TLS_GD
) != 0)
9644 /* This was a GD entry that has been converted to TPREL. If
9645 there happens to be a TPREL entry we can use that one. */
9646 struct got_entry
*ent
;
9647 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9648 if (ent
->got
.refcount
> 0
9649 && (ent
->tls_type
& TLS_TPREL
) != 0
9650 && ent
->addend
== gent
->addend
9651 && ent
->owner
== gent
->owner
)
9653 gent
->got
.refcount
= 0;
9657 /* If not, then we'll be using our own TPREL entry. */
9658 if (gent
->got
.refcount
!= 0)
9659 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9662 /* Remove any list entry that won't generate a word in the GOT before
9663 we call merge_got_entries. Otherwise we risk merging to empty
9665 pgent
= &h
->got
.glist
;
9666 while ((gent
= *pgent
) != NULL
)
9667 if (gent
->got
.refcount
> 0)
9669 if ((gent
->tls_type
& TLS_LD
) != 0
9672 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9673 *pgent
= gent
->next
;
9676 pgent
= &gent
->next
;
9679 *pgent
= gent
->next
;
9681 if (!htab
->do_multi_toc
)
9682 merge_got_entries (&h
->got
.glist
);
9684 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9685 if (!gent
->is_indirect
)
9687 /* Make sure this symbol is output as a dynamic symbol.
9688 Undefined weak syms won't yet be marked as dynamic,
9689 nor will all TLS symbols. */
9690 if (h
->dynindx
== -1
9692 && h
->type
!= STT_GNU_IFUNC
9693 && htab
->elf
.dynamic_sections_created
)
9695 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9699 if (!is_ppc64_elf (gent
->owner
))
9702 allocate_got (h
, info
, gent
);
9705 if (eh
->dyn_relocs
== NULL
9706 || (!htab
->elf
.dynamic_sections_created
9707 && h
->type
!= STT_GNU_IFUNC
))
9710 /* In the shared -Bsymbolic case, discard space allocated for
9711 dynamic pc-relative relocs against symbols which turn out to be
9712 defined in regular objects. For the normal shared case, discard
9713 space for relocs that have become local due to symbol visibility
9716 if (bfd_link_pic (info
))
9718 /* Relocs that use pc_count are those that appear on a call insn,
9719 or certain REL relocs (see must_be_dyn_reloc) that can be
9720 generated via assembly. We want calls to protected symbols to
9721 resolve directly to the function rather than going via the plt.
9722 If people want function pointer comparisons to work as expected
9723 then they should avoid writing weird assembly. */
9724 if (SYMBOL_CALLS_LOCAL (info
, h
))
9726 struct elf_dyn_relocs
**pp
;
9728 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9730 p
->count
-= p
->pc_count
;
9739 /* Also discard relocs on undefined weak syms with non-default
9741 if (eh
->dyn_relocs
!= NULL
9742 && h
->root
.type
== bfd_link_hash_undefweak
)
9744 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9745 eh
->dyn_relocs
= NULL
;
9747 /* Make sure this symbol is output as a dynamic symbol.
9748 Undefined weak syms won't yet be marked as dynamic. */
9749 else if (h
->dynindx
== -1
9750 && !h
->forced_local
)
9752 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9757 else if (h
->type
== STT_GNU_IFUNC
)
9759 if (!h
->non_got_ref
)
9760 eh
->dyn_relocs
= NULL
;
9762 else if (ELIMINATE_COPY_RELOCS
)
9764 /* For the non-shared case, discard space for relocs against
9765 symbols which turn out to need copy relocs or are not
9771 /* Make sure this symbol is output as a dynamic symbol.
9772 Undefined weak syms won't yet be marked as dynamic. */
9773 if (h
->dynindx
== -1
9774 && !h
->forced_local
)
9776 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9780 /* If that succeeded, we know we'll be keeping all the
9782 if (h
->dynindx
!= -1)
9786 eh
->dyn_relocs
= NULL
;
9791 /* Finally, allocate space. */
9792 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9794 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9795 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9796 sreloc
= htab
->elf
.irelplt
;
9797 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9803 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9804 to set up space for global entry stubs. These are put in glink,
9805 after the branch table. */
9808 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9810 struct bfd_link_info
*info
;
9811 struct ppc_link_hash_table
*htab
;
9812 struct plt_entry
*pent
;
9815 if (h
->root
.type
== bfd_link_hash_indirect
)
9818 if (!h
->pointer_equality_needed
)
9825 htab
= ppc_hash_table (info
);
9830 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9831 if (pent
->plt
.offset
!= (bfd_vma
) -1
9832 && pent
->addend
== 0)
9834 /* For ELFv2, if this symbol is not defined in a regular file
9835 and we are not generating a shared library or pie, then we
9836 need to define the symbol in the executable on a call stub.
9837 This is to avoid text relocations. */
9838 s
->size
= (s
->size
+ 15) & -16;
9839 h
->root
.u
.def
.section
= s
;
9840 h
->root
.u
.def
.value
= s
->size
;
9847 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9848 read-only sections. */
9851 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9853 if (h
->root
.type
== bfd_link_hash_indirect
)
9856 if (readonly_dynrelocs (h
))
9858 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9860 /* Not an error, just cut short the traversal. */
9866 /* Set the sizes of the dynamic sections. */
9869 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9870 struct bfd_link_info
*info
)
9872 struct ppc_link_hash_table
*htab
;
9877 struct got_entry
*first_tlsld
;
9879 htab
= ppc_hash_table (info
);
9883 dynobj
= htab
->elf
.dynobj
;
9887 if (htab
->elf
.dynamic_sections_created
)
9889 /* Set the contents of the .interp section to the interpreter. */
9890 if (bfd_link_executable (info
) && !info
->nointerp
)
9892 s
= bfd_get_linker_section (dynobj
, ".interp");
9895 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9896 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9900 /* Set up .got offsets for local syms, and space for local dynamic
9902 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9904 struct got_entry
**lgot_ents
;
9905 struct got_entry
**end_lgot_ents
;
9906 struct plt_entry
**local_plt
;
9907 struct plt_entry
**end_local_plt
;
9908 unsigned char *lgot_masks
;
9909 bfd_size_type locsymcount
;
9910 Elf_Internal_Shdr
*symtab_hdr
;
9912 if (!is_ppc64_elf (ibfd
))
9915 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9917 struct ppc_dyn_relocs
*p
;
9919 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9921 if (!bfd_is_abs_section (p
->sec
)
9922 && bfd_is_abs_section (p
->sec
->output_section
))
9924 /* Input section has been discarded, either because
9925 it is a copy of a linkonce section or due to
9926 linker script /DISCARD/, so we'll be discarding
9929 else if (p
->count
!= 0)
9931 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9933 srel
= htab
->elf
.irelplt
;
9934 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9935 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9936 info
->flags
|= DF_TEXTREL
;
9941 lgot_ents
= elf_local_got_ents (ibfd
);
9945 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9946 locsymcount
= symtab_hdr
->sh_info
;
9947 end_lgot_ents
= lgot_ents
+ locsymcount
;
9948 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9949 end_local_plt
= local_plt
+ locsymcount
;
9950 lgot_masks
= (unsigned char *) end_local_plt
;
9951 s
= ppc64_elf_tdata (ibfd
)->got
;
9952 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9954 struct got_entry
**pent
, *ent
;
9957 while ((ent
= *pent
) != NULL
)
9958 if (ent
->got
.refcount
> 0)
9960 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9962 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9967 unsigned int ent_size
= 8;
9968 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9970 ent
->got
.offset
= s
->size
;
9971 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9976 s
->size
+= ent_size
;
9977 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9979 htab
->elf
.irelplt
->size
+= rel_size
;
9980 htab
->got_reli_size
+= rel_size
;
9982 else if (bfd_link_pic (info
))
9984 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9985 srel
->size
+= rel_size
;
9994 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9995 for (; local_plt
< end_local_plt
; ++local_plt
)
9997 struct plt_entry
*ent
;
9999 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10000 if (ent
->plt
.refcount
> 0)
10002 s
= htab
->elf
.iplt
;
10003 ent
->plt
.offset
= s
->size
;
10004 s
->size
+= PLT_ENTRY_SIZE (htab
);
10006 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10009 ent
->plt
.offset
= (bfd_vma
) -1;
10013 /* Allocate global sym .plt and .got entries, and space for global
10014 sym dynamic relocs. */
10015 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10016 /* Stash the end of glink branch table. */
10017 if (htab
->glink
!= NULL
)
10018 htab
->glink
->rawsize
= htab
->glink
->size
;
10020 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10021 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10023 first_tlsld
= NULL
;
10024 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10026 struct got_entry
*ent
;
10028 if (!is_ppc64_elf (ibfd
))
10031 ent
= ppc64_tlsld_got (ibfd
);
10032 if (ent
->got
.refcount
> 0)
10034 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10036 ent
->is_indirect
= TRUE
;
10037 ent
->got
.ent
= first_tlsld
;
10041 if (first_tlsld
== NULL
)
10043 s
= ppc64_elf_tdata (ibfd
)->got
;
10044 ent
->got
.offset
= s
->size
;
10047 if (bfd_link_pic (info
))
10049 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10050 srel
->size
+= sizeof (Elf64_External_Rela
);
10055 ent
->got
.offset
= (bfd_vma
) -1;
10058 /* We now have determined the sizes of the various dynamic sections.
10059 Allocate memory for them. */
10061 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10063 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10066 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10067 /* These haven't been allocated yet; don't strip. */
10069 else if (s
== htab
->elf
.sgot
10070 || s
== htab
->elf
.splt
10071 || s
== htab
->elf
.iplt
10072 || s
== htab
->glink
10073 || s
== htab
->dynbss
)
10075 /* Strip this section if we don't need it; see the
10078 else if (s
== htab
->glink_eh_frame
)
10080 if (!bfd_is_abs_section (s
->output_section
))
10081 /* Not sized yet. */
10084 else if (CONST_STRNEQ (s
->name
, ".rela"))
10088 if (s
!= htab
->elf
.srelplt
)
10091 /* We use the reloc_count field as a counter if we need
10092 to copy relocs into the output file. */
10093 s
->reloc_count
= 0;
10098 /* It's not one of our sections, so don't allocate space. */
10104 /* If we don't need this section, strip it from the
10105 output file. This is mostly to handle .rela.bss and
10106 .rela.plt. We must create both sections in
10107 create_dynamic_sections, because they must be created
10108 before the linker maps input sections to output
10109 sections. The linker does that before
10110 adjust_dynamic_symbol is called, and it is that
10111 function which decides whether anything needs to go
10112 into these sections. */
10113 s
->flags
|= SEC_EXCLUDE
;
10117 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10120 /* Allocate memory for the section contents. We use bfd_zalloc
10121 here in case unused entries are not reclaimed before the
10122 section's contents are written out. This should not happen,
10123 but this way if it does we get a R_PPC64_NONE reloc in .rela
10124 sections instead of garbage.
10125 We also rely on the section contents being zero when writing
10127 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10128 if (s
->contents
== NULL
)
10132 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10134 if (!is_ppc64_elf (ibfd
))
10137 s
= ppc64_elf_tdata (ibfd
)->got
;
10138 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10141 s
->flags
|= SEC_EXCLUDE
;
10144 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10145 if (s
->contents
== NULL
)
10149 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10153 s
->flags
|= SEC_EXCLUDE
;
10156 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10157 if (s
->contents
== NULL
)
10160 s
->reloc_count
= 0;
10165 if (htab
->elf
.dynamic_sections_created
)
10167 bfd_boolean tls_opt
;
10169 /* Add some entries to the .dynamic section. We fill in the
10170 values later, in ppc64_elf_finish_dynamic_sections, but we
10171 must add the entries now so that we get the correct size for
10172 the .dynamic section. The DT_DEBUG entry is filled in by the
10173 dynamic linker and used by the debugger. */
10174 #define add_dynamic_entry(TAG, VAL) \
10175 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10177 if (bfd_link_executable (info
))
10179 if (!add_dynamic_entry (DT_DEBUG
, 0))
10183 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10185 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10186 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10187 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10188 || !add_dynamic_entry (DT_JMPREL
, 0)
10189 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10193 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10195 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10196 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10200 tls_opt
= (htab
->params
->tls_get_addr_opt
10201 && htab
->tls_get_addr_fd
!= NULL
10202 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10203 if (tls_opt
|| !htab
->opd_abi
)
10205 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10211 if (!add_dynamic_entry (DT_RELA
, 0)
10212 || !add_dynamic_entry (DT_RELASZ
, 0)
10213 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10216 /* If any dynamic relocs apply to a read-only section,
10217 then we need a DT_TEXTREL entry. */
10218 if ((info
->flags
& DF_TEXTREL
) == 0)
10219 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10221 if ((info
->flags
& DF_TEXTREL
) != 0)
10223 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10228 #undef add_dynamic_entry
10233 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10236 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10238 if (h
->plt
.plist
!= NULL
10240 && !h
->pointer_equality_needed
)
10243 return _bfd_elf_hash_symbol (h
);
10246 /* Determine the type of stub needed, if any, for a call. */
10248 static inline enum ppc_stub_type
10249 ppc_type_of_stub (asection
*input_sec
,
10250 const Elf_Internal_Rela
*rel
,
10251 struct ppc_link_hash_entry
**hash
,
10252 struct plt_entry
**plt_ent
,
10253 bfd_vma destination
,
10254 unsigned long local_off
)
10256 struct ppc_link_hash_entry
*h
= *hash
;
10258 bfd_vma branch_offset
;
10259 bfd_vma max_branch_offset
;
10260 enum elf_ppc64_reloc_type r_type
;
10264 struct plt_entry
*ent
;
10265 struct ppc_link_hash_entry
*fdh
= h
;
10267 && h
->oh
->is_func_descriptor
)
10269 fdh
= ppc_follow_link (h
->oh
);
10273 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10274 if (ent
->addend
== rel
->r_addend
10275 && ent
->plt
.offset
!= (bfd_vma
) -1)
10278 return ppc_stub_plt_call
;
10281 /* Here, we know we don't have a plt entry. If we don't have a
10282 either a defined function descriptor or a defined entry symbol
10283 in a regular object file, then it is pointless trying to make
10284 any other type of stub. */
10285 if (!is_static_defined (&fdh
->elf
)
10286 && !is_static_defined (&h
->elf
))
10287 return ppc_stub_none
;
10289 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10291 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10292 struct plt_entry
**local_plt
= (struct plt_entry
**)
10293 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10294 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10296 if (local_plt
[r_symndx
] != NULL
)
10298 struct plt_entry
*ent
;
10300 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10301 if (ent
->addend
== rel
->r_addend
10302 && ent
->plt
.offset
!= (bfd_vma
) -1)
10305 return ppc_stub_plt_call
;
10310 /* Determine where the call point is. */
10311 location
= (input_sec
->output_offset
10312 + input_sec
->output_section
->vma
10315 branch_offset
= destination
- location
;
10316 r_type
= ELF64_R_TYPE (rel
->r_info
);
10318 /* Determine if a long branch stub is needed. */
10319 max_branch_offset
= 1 << 25;
10320 if (r_type
!= R_PPC64_REL24
)
10321 max_branch_offset
= 1 << 15;
10323 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10324 /* We need a stub. Figure out whether a long_branch or plt_branch
10325 is needed later. */
10326 return ppc_stub_long_branch
;
10328 return ppc_stub_none
;
10331 /* With power7 weakly ordered memory model, it is possible for ld.so
10332 to update a plt entry in one thread and have another thread see a
10333 stale zero toc entry. To avoid this we need some sort of acquire
10334 barrier in the call stub. One solution is to make the load of the
10335 toc word seem to appear to depend on the load of the function entry
10336 word. Another solution is to test for r2 being zero, and branch to
10337 the appropriate glink entry if so.
10339 . fake dep barrier compare
10340 . ld 12,xxx(2) ld 12,xxx(2)
10341 . mtctr 12 mtctr 12
10342 . xor 11,12,12 ld 2,xxx+8(2)
10343 . add 2,2,11 cmpldi 2,0
10344 . ld 2,xxx+8(2) bnectr+
10345 . bctr b <glink_entry>
10347 The solution involving the compare turns out to be faster, so
10348 that's what we use unless the branch won't reach. */
10350 #define ALWAYS_USE_FAKE_DEP 0
10351 #define ALWAYS_EMIT_R2SAVE 0
10353 #define PPC_LO(v) ((v) & 0xffff)
10354 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10355 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10357 static inline unsigned int
10358 plt_stub_size (struct ppc_link_hash_table
*htab
,
10359 struct ppc_stub_hash_entry
*stub_entry
,
10362 unsigned size
= 12;
10364 if (ALWAYS_EMIT_R2SAVE
10365 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10367 if (PPC_HA (off
) != 0)
10372 if (htab
->params
->plt_static_chain
)
10374 if (htab
->params
->plt_thread_safe
10375 && htab
->elf
.dynamic_sections_created
10376 && stub_entry
->h
!= NULL
10377 && stub_entry
->h
->elf
.dynindx
!= -1)
10379 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10382 if (stub_entry
->h
!= NULL
10383 && (stub_entry
->h
== htab
->tls_get_addr_fd
10384 || stub_entry
->h
== htab
->tls_get_addr
)
10385 && htab
->params
->tls_get_addr_opt
)
10390 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10391 then return the padding needed to do so. */
10392 static inline unsigned int
10393 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10394 struct ppc_stub_hash_entry
*stub_entry
,
10397 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10398 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10399 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10401 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10402 > ((stub_size
- 1) & -stub_align
))
10403 return stub_align
- (stub_off
& (stub_align
- 1));
10407 /* Build a .plt call stub. */
10409 static inline bfd_byte
*
10410 build_plt_stub (struct ppc_link_hash_table
*htab
,
10411 struct ppc_stub_hash_entry
*stub_entry
,
10412 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10414 bfd
*obfd
= htab
->params
->stub_bfd
;
10415 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10416 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10417 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10418 && htab
->elf
.dynamic_sections_created
10419 && stub_entry
->h
!= NULL
10420 && stub_entry
->h
->elf
.dynindx
!= -1);
10421 bfd_boolean use_fake_dep
= plt_thread_safe
;
10422 bfd_vma cmp_branch_off
= 0;
10424 if (!ALWAYS_USE_FAKE_DEP
10427 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10428 || stub_entry
->h
== htab
->tls_get_addr
)
10429 && htab
->params
->tls_get_addr_opt
))
10431 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10432 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10433 / PLT_ENTRY_SIZE (htab
));
10434 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10437 if (pltindex
> 32768)
10438 glinkoff
+= (pltindex
- 32768) * 4;
10440 + htab
->glink
->output_offset
10441 + htab
->glink
->output_section
->vma
);
10442 from
= (p
- stub_entry
->group
->stub_sec
->contents
10443 + 4 * (ALWAYS_EMIT_R2SAVE
10444 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10445 + 4 * (PPC_HA (offset
) != 0)
10446 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10447 != PPC_HA (offset
))
10448 + 4 * (plt_static_chain
!= 0)
10450 + stub_entry
->group
->stub_sec
->output_offset
10451 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10452 cmp_branch_off
= to
- from
;
10453 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10456 if (PPC_HA (offset
) != 0)
10460 if (ALWAYS_EMIT_R2SAVE
10461 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10462 r
[0].r_offset
+= 4;
10463 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10464 r
[1].r_offset
= r
[0].r_offset
+ 4;
10465 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10466 r
[1].r_addend
= r
[0].r_addend
;
10469 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10471 r
[2].r_offset
= r
[1].r_offset
+ 4;
10472 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10473 r
[2].r_addend
= r
[0].r_addend
;
10477 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10478 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10479 r
[2].r_addend
= r
[0].r_addend
+ 8;
10480 if (plt_static_chain
)
10482 r
[3].r_offset
= r
[2].r_offset
+ 4;
10483 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10484 r
[3].r_addend
= r
[0].r_addend
+ 16;
10489 if (ALWAYS_EMIT_R2SAVE
10490 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10491 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10494 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10495 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10499 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10500 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10503 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10505 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10508 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10513 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10514 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10516 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10517 if (plt_static_chain
)
10518 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10525 if (ALWAYS_EMIT_R2SAVE
10526 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10527 r
[0].r_offset
+= 4;
10528 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10531 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10533 r
[1].r_offset
= r
[0].r_offset
+ 4;
10534 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10535 r
[1].r_addend
= r
[0].r_addend
;
10539 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10540 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10541 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10542 if (plt_static_chain
)
10544 r
[2].r_offset
= r
[1].r_offset
+ 4;
10545 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10546 r
[2].r_addend
= r
[0].r_addend
+ 8;
10551 if (ALWAYS_EMIT_R2SAVE
10552 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10553 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10554 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10556 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10558 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10561 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10566 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10567 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10569 if (plt_static_chain
)
10570 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10571 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10574 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10576 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10577 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10578 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10581 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10585 /* Build a special .plt call stub for __tls_get_addr. */
10587 #define LD_R11_0R3 0xe9630000
10588 #define LD_R12_0R3 0xe9830000
10589 #define MR_R0_R3 0x7c601b78
10590 #define CMPDI_R11_0 0x2c2b0000
10591 #define ADD_R3_R12_R13 0x7c6c6a14
10592 #define BEQLR 0x4d820020
10593 #define MR_R3_R0 0x7c030378
10594 #define STD_R11_0R1 0xf9610000
10595 #define BCTRL 0x4e800421
10596 #define LD_R11_0R1 0xe9610000
10597 #define MTLR_R11 0x7d6803a6
10599 static inline bfd_byte
*
10600 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10601 struct ppc_stub_hash_entry
*stub_entry
,
10602 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10604 bfd
*obfd
= htab
->params
->stub_bfd
;
10606 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10607 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10608 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10609 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10610 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10611 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10612 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10613 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10614 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10617 r
[0].r_offset
+= 9 * 4;
10618 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10619 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10621 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10622 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10623 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10624 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10629 static Elf_Internal_Rela
*
10630 get_relocs (asection
*sec
, int count
)
10632 Elf_Internal_Rela
*relocs
;
10633 struct bfd_elf_section_data
*elfsec_data
;
10635 elfsec_data
= elf_section_data (sec
);
10636 relocs
= elfsec_data
->relocs
;
10637 if (relocs
== NULL
)
10639 bfd_size_type relsize
;
10640 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10641 relocs
= bfd_alloc (sec
->owner
, relsize
);
10642 if (relocs
== NULL
)
10644 elfsec_data
->relocs
= relocs
;
10645 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10646 sizeof (Elf_Internal_Shdr
));
10647 if (elfsec_data
->rela
.hdr
== NULL
)
10649 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10650 * sizeof (Elf64_External_Rela
));
10651 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10652 sec
->reloc_count
= 0;
10654 relocs
+= sec
->reloc_count
;
10655 sec
->reloc_count
+= count
;
10660 get_r2off (struct bfd_link_info
*info
,
10661 struct ppc_stub_hash_entry
*stub_entry
)
10663 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10664 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10668 /* Support linking -R objects. Get the toc pointer from the
10671 if (!htab
->opd_abi
)
10673 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10674 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10676 if (strcmp (opd
->name
, ".opd") != 0
10677 || opd
->reloc_count
!= 0)
10679 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10680 stub_entry
->h
->elf
.root
.root
.string
);
10681 bfd_set_error (bfd_error_bad_value
);
10682 return (bfd_vma
) -1;
10684 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10685 return (bfd_vma
) -1;
10686 r2off
= bfd_get_64 (opd
->owner
, buf
);
10687 r2off
-= elf_gp (info
->output_bfd
);
10689 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10694 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10696 struct ppc_stub_hash_entry
*stub_entry
;
10697 struct ppc_branch_hash_entry
*br_entry
;
10698 struct bfd_link_info
*info
;
10699 struct ppc_link_hash_table
*htab
;
10704 Elf_Internal_Rela
*r
;
10707 /* Massage our args to the form they really have. */
10708 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10711 htab
= ppc_hash_table (info
);
10715 /* Make a note of the offset within the stubs for this entry. */
10716 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10717 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10719 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10720 switch (stub_entry
->stub_type
)
10722 case ppc_stub_long_branch
:
10723 case ppc_stub_long_branch_r2off
:
10724 /* Branches are relative. This is where we are going to. */
10725 dest
= (stub_entry
->target_value
10726 + stub_entry
->target_section
->output_offset
10727 + stub_entry
->target_section
->output_section
->vma
);
10728 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10731 /* And this is where we are coming from. */
10732 off
-= (stub_entry
->stub_offset
10733 + stub_entry
->group
->stub_sec
->output_offset
10734 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10737 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10739 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10741 if (r2off
== (bfd_vma
) -1)
10743 htab
->stub_error
= TRUE
;
10746 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10749 if (PPC_HA (r2off
) != 0)
10751 bfd_put_32 (htab
->params
->stub_bfd
,
10752 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10756 if (PPC_LO (r2off
) != 0)
10758 bfd_put_32 (htab
->params
->stub_bfd
,
10759 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10765 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10767 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10769 info
->callbacks
->einfo
10770 (_("%P: long branch stub `%s' offset overflow\n"),
10771 stub_entry
->root
.string
);
10772 htab
->stub_error
= TRUE
;
10776 if (info
->emitrelocations
)
10778 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10781 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10782 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10783 r
->r_addend
= dest
;
10784 if (stub_entry
->h
!= NULL
)
10786 struct elf_link_hash_entry
**hashes
;
10787 unsigned long symndx
;
10788 struct ppc_link_hash_entry
*h
;
10790 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10791 if (hashes
== NULL
)
10793 bfd_size_type hsize
;
10795 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10796 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10797 if (hashes
== NULL
)
10799 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10800 htab
->stub_globals
= 1;
10802 symndx
= htab
->stub_globals
++;
10804 hashes
[symndx
] = &h
->elf
;
10805 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10806 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10807 h
= ppc_follow_link (h
->oh
);
10808 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10809 /* H is an opd symbol. The addend must be zero. */
10813 off
= (h
->elf
.root
.u
.def
.value
10814 + h
->elf
.root
.u
.def
.section
->output_offset
10815 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10816 r
->r_addend
-= off
;
10822 case ppc_stub_plt_branch
:
10823 case ppc_stub_plt_branch_r2off
:
10824 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10825 stub_entry
->root
.string
+ 9,
10827 if (br_entry
== NULL
)
10829 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10830 stub_entry
->root
.string
);
10831 htab
->stub_error
= TRUE
;
10835 dest
= (stub_entry
->target_value
10836 + stub_entry
->target_section
->output_offset
10837 + stub_entry
->target_section
->output_section
->vma
);
10838 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10839 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10841 bfd_put_64 (htab
->brlt
->owner
, dest
,
10842 htab
->brlt
->contents
+ br_entry
->offset
);
10844 if (br_entry
->iter
== htab
->stub_iteration
)
10846 br_entry
->iter
= 0;
10848 if (htab
->relbrlt
!= NULL
)
10850 /* Create a reloc for the branch lookup table entry. */
10851 Elf_Internal_Rela rela
;
10854 rela
.r_offset
= (br_entry
->offset
10855 + htab
->brlt
->output_offset
10856 + htab
->brlt
->output_section
->vma
);
10857 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10858 rela
.r_addend
= dest
;
10860 rl
= htab
->relbrlt
->contents
;
10861 rl
+= (htab
->relbrlt
->reloc_count
++
10862 * sizeof (Elf64_External_Rela
));
10863 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10865 else if (info
->emitrelocations
)
10867 r
= get_relocs (htab
->brlt
, 1);
10870 /* brlt, being SEC_LINKER_CREATED does not go through the
10871 normal reloc processing. Symbols and offsets are not
10872 translated from input file to output file form, so
10873 set up the offset per the output file. */
10874 r
->r_offset
= (br_entry
->offset
10875 + htab
->brlt
->output_offset
10876 + htab
->brlt
->output_section
->vma
);
10877 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10878 r
->r_addend
= dest
;
10882 dest
= (br_entry
->offset
10883 + htab
->brlt
->output_offset
10884 + htab
->brlt
->output_section
->vma
);
10887 - elf_gp (htab
->brlt
->output_section
->owner
)
10888 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
10890 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10892 info
->callbacks
->einfo
10893 (_("%P: linkage table error against `%T'\n"),
10894 stub_entry
->root
.string
);
10895 bfd_set_error (bfd_error_bad_value
);
10896 htab
->stub_error
= TRUE
;
10900 if (info
->emitrelocations
)
10902 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10905 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10906 if (bfd_big_endian (info
->output_bfd
))
10907 r
[0].r_offset
+= 2;
10908 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10909 r
[0].r_offset
+= 4;
10910 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10911 r
[0].r_addend
= dest
;
10912 if (PPC_HA (off
) != 0)
10914 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10915 r
[1].r_offset
= r
[0].r_offset
+ 4;
10916 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10917 r
[1].r_addend
= r
[0].r_addend
;
10921 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10923 if (PPC_HA (off
) != 0)
10926 bfd_put_32 (htab
->params
->stub_bfd
,
10927 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10929 bfd_put_32 (htab
->params
->stub_bfd
,
10930 LD_R12_0R12
| PPC_LO (off
), loc
);
10935 bfd_put_32 (htab
->params
->stub_bfd
,
10936 LD_R12_0R2
| PPC_LO (off
), loc
);
10941 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10943 if (r2off
== (bfd_vma
) -1)
10945 htab
->stub_error
= TRUE
;
10949 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10952 if (PPC_HA (off
) != 0)
10955 bfd_put_32 (htab
->params
->stub_bfd
,
10956 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10958 bfd_put_32 (htab
->params
->stub_bfd
,
10959 LD_R12_0R12
| PPC_LO (off
), loc
);
10962 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10964 if (PPC_HA (r2off
) != 0)
10968 bfd_put_32 (htab
->params
->stub_bfd
,
10969 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10971 if (PPC_LO (r2off
) != 0)
10975 bfd_put_32 (htab
->params
->stub_bfd
,
10976 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10980 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10982 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10985 case ppc_stub_plt_call
:
10986 case ppc_stub_plt_call_r2save
:
10987 if (stub_entry
->h
!= NULL
10988 && stub_entry
->h
->is_func_descriptor
10989 && stub_entry
->h
->oh
!= NULL
)
10991 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10993 /* If the old-ABI "dot-symbol" is undefined make it weak so
10994 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
10995 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10996 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10997 /* Stop undo_symbol_twiddle changing it back to undefined. */
10998 fh
->was_undefined
= 0;
11001 /* Now build the stub. */
11002 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11003 if (dest
>= (bfd_vma
) -2)
11006 plt
= htab
->elf
.splt
;
11007 if (!htab
->elf
.dynamic_sections_created
11008 || stub_entry
->h
== NULL
11009 || stub_entry
->h
->elf
.dynindx
== -1)
11010 plt
= htab
->elf
.iplt
;
11012 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11014 if (stub_entry
->h
== NULL
11015 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11017 Elf_Internal_Rela rela
;
11020 rela
.r_offset
= dest
;
11022 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11024 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11025 rela
.r_addend
= (stub_entry
->target_value
11026 + stub_entry
->target_section
->output_offset
11027 + stub_entry
->target_section
->output_section
->vma
);
11029 rl
= (htab
->elf
.irelplt
->contents
11030 + (htab
->elf
.irelplt
->reloc_count
++
11031 * sizeof (Elf64_External_Rela
)));
11032 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11033 stub_entry
->plt_ent
->plt
.offset
|= 1;
11037 - elf_gp (plt
->output_section
->owner
)
11038 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11040 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11042 info
->callbacks
->einfo
11043 (_("%P: linkage table error against `%T'\n"),
11044 stub_entry
->h
!= NULL
11045 ? stub_entry
->h
->elf
.root
.root
.string
11047 bfd_set_error (bfd_error_bad_value
);
11048 htab
->stub_error
= TRUE
;
11052 if (htab
->params
->plt_stub_align
!= 0)
11054 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11056 stub_entry
->group
->stub_sec
->size
+= pad
;
11057 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11062 if (info
->emitrelocations
)
11064 r
= get_relocs (stub_entry
->group
->stub_sec
,
11065 ((PPC_HA (off
) != 0)
11067 ? 2 + (htab
->params
->plt_static_chain
11068 && PPC_HA (off
+ 16) == PPC_HA (off
))
11072 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11073 if (bfd_big_endian (info
->output_bfd
))
11074 r
[0].r_offset
+= 2;
11075 r
[0].r_addend
= dest
;
11077 if (stub_entry
->h
!= NULL
11078 && (stub_entry
->h
== htab
->tls_get_addr_fd
11079 || stub_entry
->h
== htab
->tls_get_addr
)
11080 && htab
->params
->tls_get_addr_opt
)
11081 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11083 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11087 case ppc_stub_save_res
:
11095 stub_entry
->group
->stub_sec
->size
+= size
;
11097 if (htab
->params
->emit_stub_syms
)
11099 struct elf_link_hash_entry
*h
;
11102 const char *const stub_str
[] = { "long_branch",
11103 "long_branch_r2off",
11105 "plt_branch_r2off",
11109 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11110 len2
= strlen (stub_entry
->root
.string
);
11111 name
= bfd_malloc (len1
+ len2
+ 2);
11114 memcpy (name
, stub_entry
->root
.string
, 9);
11115 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11116 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11117 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11120 if (h
->root
.type
== bfd_link_hash_new
)
11122 h
->root
.type
= bfd_link_hash_defined
;
11123 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11124 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11125 h
->ref_regular
= 1;
11126 h
->def_regular
= 1;
11127 h
->ref_regular_nonweak
= 1;
11128 h
->forced_local
= 1;
11130 h
->root
.linker_def
= 1;
11137 /* As above, but don't actually build the stub. Just bump offset so
11138 we know stub section sizes, and select plt_branch stubs where
11139 long_branch stubs won't do. */
11142 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11144 struct ppc_stub_hash_entry
*stub_entry
;
11145 struct bfd_link_info
*info
;
11146 struct ppc_link_hash_table
*htab
;
11150 /* Massage our args to the form they really have. */
11151 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11154 htab
= ppc_hash_table (info
);
11158 if (stub_entry
->h
!= NULL
11159 && stub_entry
->h
->save_res
11160 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11161 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11163 /* Don't make stubs to out-of-line register save/restore
11164 functions. Instead, emit copies of the functions. */
11165 stub_entry
->group
->needs_save_res
= 1;
11166 stub_entry
->stub_type
= ppc_stub_save_res
;
11170 if (stub_entry
->stub_type
== ppc_stub_plt_call
11171 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11174 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11175 if (off
>= (bfd_vma
) -2)
11177 plt
= htab
->elf
.splt
;
11178 if (!htab
->elf
.dynamic_sections_created
11179 || stub_entry
->h
== NULL
11180 || stub_entry
->h
->elf
.dynindx
== -1)
11181 plt
= htab
->elf
.iplt
;
11182 off
+= (plt
->output_offset
11183 + plt
->output_section
->vma
11184 - elf_gp (plt
->output_section
->owner
)
11185 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11187 size
= plt_stub_size (htab
, stub_entry
, off
);
11188 if (htab
->params
->plt_stub_align
)
11189 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11190 if (info
->emitrelocations
)
11192 stub_entry
->group
->stub_sec
->reloc_count
11193 += ((PPC_HA (off
) != 0)
11195 ? 2 + (htab
->params
->plt_static_chain
11196 && PPC_HA (off
+ 16) == PPC_HA (off
))
11198 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11203 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11206 bfd_vma local_off
= 0;
11208 off
= (stub_entry
->target_value
11209 + stub_entry
->target_section
->output_offset
11210 + stub_entry
->target_section
->output_section
->vma
);
11211 off
-= (stub_entry
->group
->stub_sec
->size
11212 + stub_entry
->group
->stub_sec
->output_offset
11213 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11215 /* Reset the stub type from the plt variant in case we now
11216 can reach with a shorter stub. */
11217 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11218 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11221 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11223 r2off
= get_r2off (info
, stub_entry
);
11224 if (r2off
== (bfd_vma
) -1)
11226 htab
->stub_error
= TRUE
;
11230 if (PPC_HA (r2off
) != 0)
11232 if (PPC_LO (r2off
) != 0)
11237 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11239 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11240 Do the same for -R objects without function descriptors. */
11241 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11242 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11244 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11246 struct ppc_branch_hash_entry
*br_entry
;
11248 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11249 stub_entry
->root
.string
+ 9,
11251 if (br_entry
== NULL
)
11253 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11254 stub_entry
->root
.string
);
11255 htab
->stub_error
= TRUE
;
11259 if (br_entry
->iter
!= htab
->stub_iteration
)
11261 br_entry
->iter
= htab
->stub_iteration
;
11262 br_entry
->offset
= htab
->brlt
->size
;
11263 htab
->brlt
->size
+= 8;
11265 if (htab
->relbrlt
!= NULL
)
11266 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11267 else if (info
->emitrelocations
)
11269 htab
->brlt
->reloc_count
+= 1;
11270 htab
->brlt
->flags
|= SEC_RELOC
;
11274 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11275 off
= (br_entry
->offset
11276 + htab
->brlt
->output_offset
11277 + htab
->brlt
->output_section
->vma
11278 - elf_gp (htab
->brlt
->output_section
->owner
)
11279 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11281 if (info
->emitrelocations
)
11283 stub_entry
->group
->stub_sec
->reloc_count
11284 += 1 + (PPC_HA (off
) != 0);
11285 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11288 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11291 if (PPC_HA (off
) != 0)
11297 if (PPC_HA (off
) != 0)
11300 if (PPC_HA (r2off
) != 0)
11302 if (PPC_LO (r2off
) != 0)
11306 else if (info
->emitrelocations
)
11308 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11309 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11313 stub_entry
->group
->stub_sec
->size
+= size
;
11317 /* Set up various things so that we can make a list of input sections
11318 for each output section included in the link. Returns -1 on error,
11319 0 when no stubs will be needed, and 1 on success. */
11322 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11326 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11331 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11332 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11333 htab
->sec_info
= bfd_zmalloc (amt
);
11334 if (htab
->sec_info
== NULL
)
11337 /* Set toc_off for com, und, abs and ind sections. */
11338 for (id
= 0; id
< 3; id
++)
11339 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11344 /* Set up for first pass at multitoc partitioning. */
11347 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11349 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11351 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11352 htab
->toc_bfd
= NULL
;
11353 htab
->toc_first_sec
= NULL
;
11356 /* The linker repeatedly calls this function for each TOC input section
11357 and linker generated GOT section. Group input bfds such that the toc
11358 within a group is less than 64k in size. */
11361 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11363 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11364 bfd_vma addr
, off
, limit
;
11369 if (!htab
->second_toc_pass
)
11371 /* Keep track of the first .toc or .got section for this input bfd. */
11372 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11376 htab
->toc_bfd
= isec
->owner
;
11377 htab
->toc_first_sec
= isec
;
11380 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11381 off
= addr
- htab
->toc_curr
;
11382 limit
= 0x80008000;
11383 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11385 if (off
+ isec
->size
> limit
)
11387 addr
= (htab
->toc_first_sec
->output_offset
11388 + htab
->toc_first_sec
->output_section
->vma
);
11389 htab
->toc_curr
= addr
;
11390 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11393 /* toc_curr is the base address of this toc group. Set elf_gp
11394 for the input section to be the offset relative to the
11395 output toc base plus 0x8000. Making the input elf_gp an
11396 offset allows us to move the toc as a whole without
11397 recalculating input elf_gp. */
11398 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11399 off
+= TOC_BASE_OFF
;
11401 /* Die if someone uses a linker script that doesn't keep input
11402 file .toc and .got together. */
11404 && elf_gp (isec
->owner
) != 0
11405 && elf_gp (isec
->owner
) != off
)
11408 elf_gp (isec
->owner
) = off
;
11412 /* During the second pass toc_first_sec points to the start of
11413 a toc group, and toc_curr is used to track the old elf_gp.
11414 We use toc_bfd to ensure we only look at each bfd once. */
11415 if (htab
->toc_bfd
== isec
->owner
)
11417 htab
->toc_bfd
= isec
->owner
;
11419 if (htab
->toc_first_sec
== NULL
11420 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11422 htab
->toc_curr
= elf_gp (isec
->owner
);
11423 htab
->toc_first_sec
= isec
;
11425 addr
= (htab
->toc_first_sec
->output_offset
11426 + htab
->toc_first_sec
->output_section
->vma
);
11427 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11428 elf_gp (isec
->owner
) = off
;
11433 /* Called via elf_link_hash_traverse to merge GOT entries for global
11437 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11439 if (h
->root
.type
== bfd_link_hash_indirect
)
11442 merge_got_entries (&h
->got
.glist
);
11447 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11451 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11453 struct got_entry
*gent
;
11455 if (h
->root
.type
== bfd_link_hash_indirect
)
11458 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11459 if (!gent
->is_indirect
)
11460 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11464 /* Called on the first multitoc pass after the last call to
11465 ppc64_elf_next_toc_section. This function removes duplicate GOT
11469 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11471 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11472 struct bfd
*ibfd
, *ibfd2
;
11473 bfd_boolean done_something
;
11475 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11477 if (!htab
->do_multi_toc
)
11480 /* Merge global sym got entries within a toc group. */
11481 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11483 /* And tlsld_got. */
11484 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11486 struct got_entry
*ent
, *ent2
;
11488 if (!is_ppc64_elf (ibfd
))
11491 ent
= ppc64_tlsld_got (ibfd
);
11492 if (!ent
->is_indirect
11493 && ent
->got
.offset
!= (bfd_vma
) -1)
11495 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11497 if (!is_ppc64_elf (ibfd2
))
11500 ent2
= ppc64_tlsld_got (ibfd2
);
11501 if (!ent2
->is_indirect
11502 && ent2
->got
.offset
!= (bfd_vma
) -1
11503 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11505 ent2
->is_indirect
= TRUE
;
11506 ent2
->got
.ent
= ent
;
11512 /* Zap sizes of got sections. */
11513 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11514 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11515 htab
->got_reli_size
= 0;
11517 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11519 asection
*got
, *relgot
;
11521 if (!is_ppc64_elf (ibfd
))
11524 got
= ppc64_elf_tdata (ibfd
)->got
;
11527 got
->rawsize
= got
->size
;
11529 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11530 relgot
->rawsize
= relgot
->size
;
11535 /* Now reallocate the got, local syms first. We don't need to
11536 allocate section contents again since we never increase size. */
11537 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11539 struct got_entry
**lgot_ents
;
11540 struct got_entry
**end_lgot_ents
;
11541 struct plt_entry
**local_plt
;
11542 struct plt_entry
**end_local_plt
;
11543 unsigned char *lgot_masks
;
11544 bfd_size_type locsymcount
;
11545 Elf_Internal_Shdr
*symtab_hdr
;
11548 if (!is_ppc64_elf (ibfd
))
11551 lgot_ents
= elf_local_got_ents (ibfd
);
11555 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11556 locsymcount
= symtab_hdr
->sh_info
;
11557 end_lgot_ents
= lgot_ents
+ locsymcount
;
11558 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11559 end_local_plt
= local_plt
+ locsymcount
;
11560 lgot_masks
= (unsigned char *) end_local_plt
;
11561 s
= ppc64_elf_tdata (ibfd
)->got
;
11562 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11564 struct got_entry
*ent
;
11566 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11568 unsigned int ent_size
= 8;
11569 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11571 ent
->got
.offset
= s
->size
;
11572 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11577 s
->size
+= ent_size
;
11578 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11580 htab
->elf
.irelplt
->size
+= rel_size
;
11581 htab
->got_reli_size
+= rel_size
;
11583 else if (bfd_link_pic (info
))
11585 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11586 srel
->size
+= rel_size
;
11592 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11594 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11596 struct got_entry
*ent
;
11598 if (!is_ppc64_elf (ibfd
))
11601 ent
= ppc64_tlsld_got (ibfd
);
11602 if (!ent
->is_indirect
11603 && ent
->got
.offset
!= (bfd_vma
) -1)
11605 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11606 ent
->got
.offset
= s
->size
;
11608 if (bfd_link_pic (info
))
11610 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11611 srel
->size
+= sizeof (Elf64_External_Rela
);
11616 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11617 if (!done_something
)
11618 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11622 if (!is_ppc64_elf (ibfd
))
11625 got
= ppc64_elf_tdata (ibfd
)->got
;
11628 done_something
= got
->rawsize
!= got
->size
;
11629 if (done_something
)
11634 if (done_something
)
11635 (*htab
->params
->layout_sections_again
) ();
11637 /* Set up for second pass over toc sections to recalculate elf_gp
11638 on input sections. */
11639 htab
->toc_bfd
= NULL
;
11640 htab
->toc_first_sec
= NULL
;
11641 htab
->second_toc_pass
= TRUE
;
11642 return done_something
;
11645 /* Called after second pass of multitoc partitioning. */
11648 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11650 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11652 /* After the second pass, toc_curr tracks the TOC offset used
11653 for code sections below in ppc64_elf_next_input_section. */
11654 htab
->toc_curr
= TOC_BASE_OFF
;
11657 /* No toc references were found in ISEC. If the code in ISEC makes no
11658 calls, then there's no need to use toc adjusting stubs when branching
11659 into ISEC. Actually, indirect calls from ISEC are OK as they will
11660 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11661 needed, and 2 if a cyclical call-graph was found but no other reason
11662 for a stub was detected. If called from the top level, a return of
11663 2 means the same as a return of 0. */
11666 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11670 /* Mark this section as checked. */
11671 isec
->call_check_done
= 1;
11673 /* We know none of our code bearing sections will need toc stubs. */
11674 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11677 if (isec
->size
== 0)
11680 if (isec
->output_section
== NULL
)
11684 if (isec
->reloc_count
!= 0)
11686 Elf_Internal_Rela
*relstart
, *rel
;
11687 Elf_Internal_Sym
*local_syms
;
11688 struct ppc_link_hash_table
*htab
;
11690 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11691 info
->keep_memory
);
11692 if (relstart
== NULL
)
11695 /* Look for branches to outside of this section. */
11697 htab
= ppc_hash_table (info
);
11701 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11703 enum elf_ppc64_reloc_type r_type
;
11704 unsigned long r_symndx
;
11705 struct elf_link_hash_entry
*h
;
11706 struct ppc_link_hash_entry
*eh
;
11707 Elf_Internal_Sym
*sym
;
11709 struct _opd_sec_data
*opd
;
11713 r_type
= ELF64_R_TYPE (rel
->r_info
);
11714 if (r_type
!= R_PPC64_REL24
11715 && r_type
!= R_PPC64_REL14
11716 && r_type
!= R_PPC64_REL14_BRTAKEN
11717 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11720 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11721 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11728 /* Calls to dynamic lib functions go through a plt call stub
11730 eh
= (struct ppc_link_hash_entry
*) h
;
11732 && (eh
->elf
.plt
.plist
!= NULL
11734 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11740 if (sym_sec
== NULL
)
11741 /* Ignore other undefined symbols. */
11744 /* Assume branches to other sections not included in the
11745 link need stubs too, to cover -R and absolute syms. */
11746 if (sym_sec
->output_section
== NULL
)
11753 sym_value
= sym
->st_value
;
11756 if (h
->root
.type
!= bfd_link_hash_defined
11757 && h
->root
.type
!= bfd_link_hash_defweak
)
11759 sym_value
= h
->root
.u
.def
.value
;
11761 sym_value
+= rel
->r_addend
;
11763 /* If this branch reloc uses an opd sym, find the code section. */
11764 opd
= get_opd_info (sym_sec
);
11767 if (h
== NULL
&& opd
->adjust
!= NULL
)
11771 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11773 /* Assume deleted functions won't ever be called. */
11775 sym_value
+= adjust
;
11778 dest
= opd_entry_value (sym_sec
, sym_value
,
11779 &sym_sec
, NULL
, FALSE
);
11780 if (dest
== (bfd_vma
) -1)
11785 + sym_sec
->output_offset
11786 + sym_sec
->output_section
->vma
);
11788 /* Ignore branch to self. */
11789 if (sym_sec
== isec
)
11792 /* If the called function uses the toc, we need a stub. */
11793 if (sym_sec
->has_toc_reloc
11794 || sym_sec
->makes_toc_func_call
)
11800 /* Assume any branch that needs a long branch stub might in fact
11801 need a plt_branch stub. A plt_branch stub uses r2. */
11802 else if (dest
- (isec
->output_offset
11803 + isec
->output_section
->vma
11804 + rel
->r_offset
) + (1 << 25)
11805 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11813 /* If calling back to a section in the process of being
11814 tested, we can't say for sure that no toc adjusting stubs
11815 are needed, so don't return zero. */
11816 else if (sym_sec
->call_check_in_progress
)
11819 /* Branches to another section that itself doesn't have any TOC
11820 references are OK. Recursively call ourselves to check. */
11821 else if (!sym_sec
->call_check_done
)
11825 /* Mark current section as indeterminate, so that other
11826 sections that call back to current won't be marked as
11828 isec
->call_check_in_progress
= 1;
11829 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11830 isec
->call_check_in_progress
= 0;
11841 if (local_syms
!= NULL
11842 && (elf_symtab_hdr (isec
->owner
).contents
11843 != (unsigned char *) local_syms
))
11845 if (elf_section_data (isec
)->relocs
!= relstart
)
11850 && isec
->map_head
.s
!= NULL
11851 && (strcmp (isec
->output_section
->name
, ".init") == 0
11852 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11854 if (isec
->map_head
.s
->has_toc_reloc
11855 || isec
->map_head
.s
->makes_toc_func_call
)
11857 else if (!isec
->map_head
.s
->call_check_done
)
11860 isec
->call_check_in_progress
= 1;
11861 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11862 isec
->call_check_in_progress
= 0;
11869 isec
->makes_toc_func_call
= 1;
11874 /* The linker repeatedly calls this function for each input section,
11875 in the order that input sections are linked into output sections.
11876 Build lists of input sections to determine groupings between which
11877 we may insert linker stubs. */
11880 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11882 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11887 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11888 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
11890 /* This happens to make the list in reverse order,
11891 which is what we want. */
11892 htab
->sec_info
[isec
->id
].u
.list
11893 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
11894 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
11897 if (htab
->multi_toc_needed
)
11899 /* Analyse sections that aren't already flagged as needing a
11900 valid toc pointer. Exclude .fixup for the linux kernel.
11901 .fixup contains branches, but only back to the function that
11902 hit an exception. */
11903 if (!(isec
->has_toc_reloc
11904 || (isec
->flags
& SEC_CODE
) == 0
11905 || strcmp (isec
->name
, ".fixup") == 0
11906 || isec
->call_check_done
))
11908 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11911 /* Make all sections use the TOC assigned for this object file.
11912 This will be wrong for pasted sections; We fix that in
11913 check_pasted_section(). */
11914 if (elf_gp (isec
->owner
) != 0)
11915 htab
->toc_curr
= elf_gp (isec
->owner
);
11918 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
11922 /* Check that all .init and .fini sections use the same toc, if they
11923 have toc relocs. */
11926 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11928 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11932 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11933 bfd_vma toc_off
= 0;
11936 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11937 if (i
->has_toc_reloc
)
11940 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
11941 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
11946 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11947 if (i
->makes_toc_func_call
)
11949 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
11953 /* Make sure the whole pasted function uses the same toc offset. */
11955 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11956 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
11962 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11964 return (check_pasted_section (info
, ".init")
11965 & check_pasted_section (info
, ".fini"));
11968 /* See whether we can group stub sections together. Grouping stub
11969 sections may result in fewer stubs. More importantly, we need to
11970 put all .init* and .fini* stubs at the beginning of the .init or
11971 .fini output sections respectively, because glibc splits the
11972 _init and _fini functions into multiple parts. Putting a stub in
11973 the middle of a function is not a good idea. */
11976 group_sections (struct bfd_link_info
*info
,
11977 bfd_size_type stub_group_size
,
11978 bfd_boolean stubs_always_before_branch
)
11980 struct ppc_link_hash_table
*htab
;
11982 bfd_size_type stub14_group_size
;
11983 bfd_boolean suppress_size_errors
;
11985 htab
= ppc_hash_table (info
);
11989 suppress_size_errors
= FALSE
;
11990 stub14_group_size
= stub_group_size
>> 10;
11991 if (stub_group_size
== 1)
11993 /* Default values. */
11994 if (stubs_always_before_branch
)
11996 stub_group_size
= 0x1e00000;
11997 stub14_group_size
= 0x7800;
12001 stub_group_size
= 0x1c00000;
12002 stub14_group_size
= 0x7000;
12004 suppress_size_errors
= TRUE
;
12007 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12011 if (osec
->id
>= htab
->sec_info_arr_size
)
12014 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12015 while (tail
!= NULL
)
12019 bfd_size_type total
;
12020 bfd_boolean big_sec
;
12022 struct map_stub
*group
;
12025 total
= tail
->size
;
12026 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
12027 && ppc64_elf_section_data (tail
)->has_14bit_branch
12028 ? stub14_group_size
: stub_group_size
);
12029 if (big_sec
&& !suppress_size_errors
)
12030 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
12031 tail
->owner
, tail
);
12032 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12034 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12035 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12036 < (ppc64_elf_section_data (prev
) != NULL
12037 && ppc64_elf_section_data (prev
)->has_14bit_branch
12038 ? stub14_group_size
: stub_group_size
))
12039 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12042 /* OK, the size from the start of CURR to the end is less
12043 than stub_group_size and thus can be handled by one stub
12044 section. (or the tail section is itself larger than
12045 stub_group_size, in which case we may be toast.) We
12046 should really be keeping track of the total size of stubs
12047 added here, as stubs contribute to the final output
12048 section size. That's a little tricky, and this way will
12049 only break if stubs added make the total size more than
12050 2^25, ie. for the default stub_group_size, if stubs total
12051 more than 2097152 bytes, or nearly 75000 plt call stubs. */
12052 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12055 group
->link_sec
= curr
;
12056 group
->stub_sec
= NULL
;
12057 group
->needs_save_res
= 0;
12058 group
->next
= htab
->group
;
12059 htab
->group
= group
;
12062 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12063 /* Set up this stub group. */
12064 htab
->sec_info
[tail
->id
].u
.group
= group
;
12066 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12068 /* But wait, there's more! Input sections up to stub_group_size
12069 bytes before the stub section can be handled by it too.
12070 Don't do this if we have a really large section after the
12071 stubs, as adding more stubs increases the chance that
12072 branches may not reach into the stub section. */
12073 if (!stubs_always_before_branch
&& !big_sec
)
12076 while (prev
!= NULL
12077 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12078 < (ppc64_elf_section_data (prev
) != NULL
12079 && ppc64_elf_section_data (prev
)->has_14bit_branch
12080 ? stub14_group_size
: stub_group_size
))
12081 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12084 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12085 htab
->sec_info
[tail
->id
].u
.group
= group
;
12094 static const unsigned char glink_eh_frame_cie
[] =
12096 0, 0, 0, 16, /* length. */
12097 0, 0, 0, 0, /* id. */
12098 1, /* CIE version. */
12099 'z', 'R', 0, /* Augmentation string. */
12100 4, /* Code alignment. */
12101 0x78, /* Data alignment. */
12103 1, /* Augmentation size. */
12104 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12105 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
12109 /* Stripping output sections is normally done before dynamic section
12110 symbols have been allocated. This function is called later, and
12111 handles cases like htab->brlt which is mapped to its own output
12115 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12117 if (isec
->size
== 0
12118 && isec
->output_section
->size
== 0
12119 && !(isec
->output_section
->flags
& SEC_KEEP
)
12120 && !bfd_section_removed_from_list (info
->output_bfd
,
12121 isec
->output_section
)
12122 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12124 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12125 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12126 info
->output_bfd
->section_count
--;
12130 /* Determine and set the size of the stub section for a final link.
12132 The basic idea here is to examine all the relocations looking for
12133 PC-relative calls to a target that is unreachable with a "bl"
12137 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12139 bfd_size_type stub_group_size
;
12140 bfd_boolean stubs_always_before_branch
;
12141 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12146 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12147 htab
->params
->plt_thread_safe
= 1;
12148 if (!htab
->opd_abi
)
12149 htab
->params
->plt_thread_safe
= 0;
12150 else if (htab
->params
->plt_thread_safe
== -1)
12152 static const char *const thread_starter
[] =
12156 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12158 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12159 "mq_notify", "create_timer",
12164 "GOMP_parallel_start",
12165 "GOMP_parallel_loop_static",
12166 "GOMP_parallel_loop_static_start",
12167 "GOMP_parallel_loop_dynamic",
12168 "GOMP_parallel_loop_dynamic_start",
12169 "GOMP_parallel_loop_guided",
12170 "GOMP_parallel_loop_guided_start",
12171 "GOMP_parallel_loop_runtime",
12172 "GOMP_parallel_loop_runtime_start",
12173 "GOMP_parallel_sections",
12174 "GOMP_parallel_sections_start",
12180 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12182 struct elf_link_hash_entry
*h
;
12183 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12184 FALSE
, FALSE
, TRUE
);
12185 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12186 if (htab
->params
->plt_thread_safe
)
12190 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12191 if (htab
->params
->group_size
< 0)
12192 stub_group_size
= -htab
->params
->group_size
;
12194 stub_group_size
= htab
->params
->group_size
;
12196 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12202 unsigned int bfd_indx
;
12203 struct map_stub
*group
;
12204 asection
*stub_sec
;
12206 htab
->stub_iteration
+= 1;
12208 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12210 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12212 Elf_Internal_Shdr
*symtab_hdr
;
12214 Elf_Internal_Sym
*local_syms
= NULL
;
12216 if (!is_ppc64_elf (input_bfd
))
12219 /* We'll need the symbol table in a second. */
12220 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12221 if (symtab_hdr
->sh_info
== 0)
12224 /* Walk over each section attached to the input bfd. */
12225 for (section
= input_bfd
->sections
;
12227 section
= section
->next
)
12229 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12231 /* If there aren't any relocs, then there's nothing more
12233 if ((section
->flags
& SEC_RELOC
) == 0
12234 || (section
->flags
& SEC_ALLOC
) == 0
12235 || (section
->flags
& SEC_LOAD
) == 0
12236 || (section
->flags
& SEC_CODE
) == 0
12237 || section
->reloc_count
== 0)
12240 /* If this section is a link-once section that will be
12241 discarded, then don't create any stubs. */
12242 if (section
->output_section
== NULL
12243 || section
->output_section
->owner
!= info
->output_bfd
)
12246 /* Get the relocs. */
12248 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12249 info
->keep_memory
);
12250 if (internal_relocs
== NULL
)
12251 goto error_ret_free_local
;
12253 /* Now examine each relocation. */
12254 irela
= internal_relocs
;
12255 irelaend
= irela
+ section
->reloc_count
;
12256 for (; irela
< irelaend
; irela
++)
12258 enum elf_ppc64_reloc_type r_type
;
12259 unsigned int r_indx
;
12260 enum ppc_stub_type stub_type
;
12261 struct ppc_stub_hash_entry
*stub_entry
;
12262 asection
*sym_sec
, *code_sec
;
12263 bfd_vma sym_value
, code_value
;
12264 bfd_vma destination
;
12265 unsigned long local_off
;
12266 bfd_boolean ok_dest
;
12267 struct ppc_link_hash_entry
*hash
;
12268 struct ppc_link_hash_entry
*fdh
;
12269 struct elf_link_hash_entry
*h
;
12270 Elf_Internal_Sym
*sym
;
12272 const asection
*id_sec
;
12273 struct _opd_sec_data
*opd
;
12274 struct plt_entry
*plt_ent
;
12276 r_type
= ELF64_R_TYPE (irela
->r_info
);
12277 r_indx
= ELF64_R_SYM (irela
->r_info
);
12279 if (r_type
>= R_PPC64_max
)
12281 bfd_set_error (bfd_error_bad_value
);
12282 goto error_ret_free_internal
;
12285 /* Only look for stubs on branch instructions. */
12286 if (r_type
!= R_PPC64_REL24
12287 && r_type
!= R_PPC64_REL14
12288 && r_type
!= R_PPC64_REL14_BRTAKEN
12289 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12292 /* Now determine the call target, its name, value,
12294 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12295 r_indx
, input_bfd
))
12296 goto error_ret_free_internal
;
12297 hash
= (struct ppc_link_hash_entry
*) h
;
12304 sym_value
= sym
->st_value
;
12305 if (sym_sec
!= NULL
12306 && sym_sec
->output_section
!= NULL
)
12309 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12310 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12312 sym_value
= hash
->elf
.root
.u
.def
.value
;
12313 if (sym_sec
->output_section
!= NULL
)
12316 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12317 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12319 /* Recognise an old ABI func code entry sym, and
12320 use the func descriptor sym instead if it is
12322 if (hash
->elf
.root
.root
.string
[0] == '.'
12323 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12325 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12326 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12328 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12329 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12330 if (sym_sec
->output_section
!= NULL
)
12339 bfd_set_error (bfd_error_bad_value
);
12340 goto error_ret_free_internal
;
12347 sym_value
+= irela
->r_addend
;
12348 destination
= (sym_value
12349 + sym_sec
->output_offset
12350 + sym_sec
->output_section
->vma
);
12351 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12356 code_sec
= sym_sec
;
12357 code_value
= sym_value
;
12358 opd
= get_opd_info (sym_sec
);
12363 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12365 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12368 code_value
+= adjust
;
12369 sym_value
+= adjust
;
12371 dest
= opd_entry_value (sym_sec
, sym_value
,
12372 &code_sec
, &code_value
, FALSE
);
12373 if (dest
!= (bfd_vma
) -1)
12375 destination
= dest
;
12378 /* Fixup old ABI sym to point at code
12380 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12381 hash
->elf
.root
.u
.def
.section
= code_sec
;
12382 hash
->elf
.root
.u
.def
.value
= code_value
;
12387 /* Determine what (if any) linker stub is needed. */
12389 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12390 &plt_ent
, destination
,
12393 if (stub_type
!= ppc_stub_plt_call
)
12395 /* Check whether we need a TOC adjusting stub.
12396 Since the linker pastes together pieces from
12397 different object files when creating the
12398 _init and _fini functions, it may be that a
12399 call to what looks like a local sym is in
12400 fact a call needing a TOC adjustment. */
12401 if (code_sec
!= NULL
12402 && code_sec
->output_section
!= NULL
12403 && (htab
->sec_info
[code_sec
->id
].toc_off
12404 != htab
->sec_info
[section
->id
].toc_off
)
12405 && (code_sec
->has_toc_reloc
12406 || code_sec
->makes_toc_func_call
))
12407 stub_type
= ppc_stub_long_branch_r2off
;
12410 if (stub_type
== ppc_stub_none
)
12413 /* __tls_get_addr calls might be eliminated. */
12414 if (stub_type
!= ppc_stub_plt_call
12416 && (hash
== htab
->tls_get_addr
12417 || hash
== htab
->tls_get_addr_fd
)
12418 && section
->has_tls_reloc
12419 && irela
!= internal_relocs
)
12421 /* Get tls info. */
12422 unsigned char *tls_mask
;
12424 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12425 irela
- 1, input_bfd
))
12426 goto error_ret_free_internal
;
12427 if (*tls_mask
!= 0)
12431 if (stub_type
== ppc_stub_plt_call
12432 && irela
+ 1 < irelaend
12433 && irela
[1].r_offset
== irela
->r_offset
+ 4
12434 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12436 if (!tocsave_find (htab
, INSERT
,
12437 &local_syms
, irela
+ 1, input_bfd
))
12438 goto error_ret_free_internal
;
12440 else if (stub_type
== ppc_stub_plt_call
)
12441 stub_type
= ppc_stub_plt_call_r2save
;
12443 /* Support for grouping stub sections. */
12444 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12446 /* Get the name of this stub. */
12447 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12449 goto error_ret_free_internal
;
12451 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12452 stub_name
, FALSE
, FALSE
);
12453 if (stub_entry
!= NULL
)
12455 /* The proper stub has already been created. */
12457 if (stub_type
== ppc_stub_plt_call_r2save
)
12458 stub_entry
->stub_type
= stub_type
;
12462 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12463 if (stub_entry
== NULL
)
12466 error_ret_free_internal
:
12467 if (elf_section_data (section
)->relocs
== NULL
)
12468 free (internal_relocs
);
12469 error_ret_free_local
:
12470 if (local_syms
!= NULL
12471 && (symtab_hdr
->contents
12472 != (unsigned char *) local_syms
))
12477 stub_entry
->stub_type
= stub_type
;
12478 if (stub_type
!= ppc_stub_plt_call
12479 && stub_type
!= ppc_stub_plt_call_r2save
)
12481 stub_entry
->target_value
= code_value
;
12482 stub_entry
->target_section
= code_sec
;
12486 stub_entry
->target_value
= sym_value
;
12487 stub_entry
->target_section
= sym_sec
;
12489 stub_entry
->h
= hash
;
12490 stub_entry
->plt_ent
= plt_ent
;
12491 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12493 if (stub_entry
->h
!= NULL
)
12494 htab
->stub_globals
+= 1;
12497 /* We're done with the internal relocs, free them. */
12498 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12499 free (internal_relocs
);
12502 if (local_syms
!= NULL
12503 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12505 if (!info
->keep_memory
)
12508 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12512 /* We may have added some stubs. Find out the new size of the
12514 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12516 stub_sec
= stub_sec
->next
)
12517 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12519 stub_sec
->rawsize
= stub_sec
->size
;
12520 stub_sec
->size
= 0;
12521 stub_sec
->reloc_count
= 0;
12522 stub_sec
->flags
&= ~SEC_RELOC
;
12525 htab
->brlt
->size
= 0;
12526 htab
->brlt
->reloc_count
= 0;
12527 htab
->brlt
->flags
&= ~SEC_RELOC
;
12528 if (htab
->relbrlt
!= NULL
)
12529 htab
->relbrlt
->size
= 0;
12531 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12533 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12534 if (group
->needs_save_res
)
12535 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12537 if (info
->emitrelocations
12538 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12540 htab
->glink
->reloc_count
= 1;
12541 htab
->glink
->flags
|= SEC_RELOC
;
12544 if (htab
->glink_eh_frame
!= NULL
12545 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12546 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12548 size_t size
= 0, align
;
12550 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12552 stub_sec
= stub_sec
->next
)
12553 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12555 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12558 size
+= sizeof (glink_eh_frame_cie
);
12560 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12562 size
= (size
+ align
) & ~align
;
12563 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12564 htab
->glink_eh_frame
->size
= size
;
12567 if (htab
->params
->plt_stub_align
!= 0)
12568 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12570 stub_sec
= stub_sec
->next
)
12571 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12572 stub_sec
->size
= ((stub_sec
->size
12573 + (1 << htab
->params
->plt_stub_align
) - 1)
12574 & -(1 << htab
->params
->plt_stub_align
));
12576 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12578 stub_sec
= stub_sec
->next
)
12579 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12580 && stub_sec
->rawsize
!= stub_sec
->size
)
12583 /* Exit from this loop when no stubs have been added, and no stubs
12584 have changed size. */
12585 if (stub_sec
== NULL
12586 && (htab
->glink_eh_frame
== NULL
12587 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12590 /* Ask the linker to do its stuff. */
12591 (*htab
->params
->layout_sections_again
) ();
12594 if (htab
->glink_eh_frame
!= NULL
12595 && htab
->glink_eh_frame
->size
!= 0)
12598 bfd_byte
*p
, *last_fde
;
12599 size_t last_fde_len
, size
, align
, pad
;
12600 asection
*stub_sec
;
12602 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12605 htab
->glink_eh_frame
->contents
= p
;
12608 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12609 /* CIE length (rewrite in case little-endian). */
12610 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12611 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12612 p
+= sizeof (glink_eh_frame_cie
);
12614 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12616 stub_sec
= stub_sec
->next
)
12617 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12622 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12625 val
= p
- htab
->glink_eh_frame
->contents
;
12626 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12628 /* Offset to stub section, written later. */
12630 /* stub section size. */
12631 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12633 /* Augmentation. */
12638 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12643 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12646 val
= p
- htab
->glink_eh_frame
->contents
;
12647 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12649 /* Offset to .glink, written later. */
12652 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12654 /* Augmentation. */
12657 *p
++ = DW_CFA_advance_loc
+ 1;
12658 *p
++ = DW_CFA_register
;
12660 *p
++ = htab
->opd_abi
? 12 : 0;
12661 *p
++ = DW_CFA_advance_loc
+ 4;
12662 *p
++ = DW_CFA_restore_extended
;
12665 /* Subsume any padding into the last FDE if user .eh_frame
12666 sections are aligned more than glink_eh_frame. Otherwise any
12667 zero padding will be seen as a terminator. */
12668 size
= p
- htab
->glink_eh_frame
->contents
;
12670 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12672 pad
= ((size
+ align
) & ~align
) - size
;
12673 htab
->glink_eh_frame
->size
= size
+ pad
;
12674 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12677 maybe_strip_output (info
, htab
->brlt
);
12678 if (htab
->glink_eh_frame
!= NULL
)
12679 maybe_strip_output (info
, htab
->glink_eh_frame
);
12684 /* Called after we have determined section placement. If sections
12685 move, we'll be called again. Provide a value for TOCstart. */
12688 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12691 bfd_vma TOCstart
, adjust
;
12695 struct elf_link_hash_entry
*h
;
12696 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12698 if (is_elf_hash_table (htab
)
12699 && htab
->hgot
!= NULL
)
12703 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12704 if (is_elf_hash_table (htab
))
12708 && h
->root
.type
== bfd_link_hash_defined
12709 && !h
->root
.linker_def
12710 && (!is_elf_hash_table (htab
)
12711 || h
->def_regular
))
12713 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12714 + h
->root
.u
.def
.section
->output_offset
12715 + h
->root
.u
.def
.section
->output_section
->vma
);
12716 _bfd_set_gp_value (obfd
, TOCstart
);
12721 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12722 order. The TOC starts where the first of these sections starts. */
12723 s
= bfd_get_section_by_name (obfd
, ".got");
12724 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12725 s
= bfd_get_section_by_name (obfd
, ".toc");
12726 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12727 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12728 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12729 s
= bfd_get_section_by_name (obfd
, ".plt");
12730 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12732 /* This may happen for
12733 o references to TOC base (SYM@toc / TOC[tc0]) without a
12735 o bad linker script
12736 o --gc-sections and empty TOC sections
12738 FIXME: Warn user? */
12740 /* Look for a likely section. We probably won't even be
12742 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12743 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12745 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12748 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12749 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12750 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12753 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12754 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12758 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12759 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12765 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12767 /* Force alignment. */
12768 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12769 TOCstart
-= adjust
;
12770 _bfd_set_gp_value (obfd
, TOCstart
);
12772 if (info
!= NULL
&& s
!= NULL
)
12774 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12778 if (htab
->elf
.hgot
!= NULL
)
12780 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12781 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12786 struct bfd_link_hash_entry
*bh
= NULL
;
12787 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12788 s
, TOC_BASE_OFF
- adjust
,
12789 NULL
, FALSE
, FALSE
, &bh
);
12795 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12796 write out any global entry stubs. */
12799 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12801 struct bfd_link_info
*info
;
12802 struct ppc_link_hash_table
*htab
;
12803 struct plt_entry
*pent
;
12806 if (h
->root
.type
== bfd_link_hash_indirect
)
12809 if (!h
->pointer_equality_needed
)
12812 if (h
->def_regular
)
12816 htab
= ppc_hash_table (info
);
12821 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12822 if (pent
->plt
.offset
!= (bfd_vma
) -1
12823 && pent
->addend
== 0)
12829 p
= s
->contents
+ h
->root
.u
.def
.value
;
12830 plt
= htab
->elf
.splt
;
12831 if (!htab
->elf
.dynamic_sections_created
12832 || h
->dynindx
== -1)
12833 plt
= htab
->elf
.iplt
;
12834 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12835 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12837 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12839 info
->callbacks
->einfo
12840 (_("%P: linkage table error against `%T'\n"),
12841 h
->root
.root
.string
);
12842 bfd_set_error (bfd_error_bad_value
);
12843 htab
->stub_error
= TRUE
;
12846 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12847 if (htab
->params
->emit_stub_syms
)
12849 size_t len
= strlen (h
->root
.root
.string
);
12850 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12855 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12856 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12859 if (h
->root
.type
== bfd_link_hash_new
)
12861 h
->root
.type
= bfd_link_hash_defined
;
12862 h
->root
.u
.def
.section
= s
;
12863 h
->root
.u
.def
.value
= p
- s
->contents
;
12864 h
->ref_regular
= 1;
12865 h
->def_regular
= 1;
12866 h
->ref_regular_nonweak
= 1;
12867 h
->forced_local
= 1;
12869 h
->root
.linker_def
= 1;
12873 if (PPC_HA (off
) != 0)
12875 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12878 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12880 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12882 bfd_put_32 (s
->owner
, BCTR
, p
);
12888 /* Build all the stubs associated with the current output file.
12889 The stubs are kept in a hash table attached to the main linker
12890 hash table. This function is called via gldelf64ppc_finish. */
12893 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12896 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12897 struct map_stub
*group
;
12898 asection
*stub_sec
;
12900 int stub_sec_count
= 0;
12905 /* Allocate memory to hold the linker stubs. */
12906 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12908 stub_sec
= stub_sec
->next
)
12909 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12910 && stub_sec
->size
!= 0)
12912 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12913 if (stub_sec
->contents
== NULL
)
12915 /* We want to check that built size is the same as calculated
12916 size. rawsize is a convenient location to use. */
12917 stub_sec
->rawsize
= stub_sec
->size
;
12918 stub_sec
->size
= 0;
12921 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12926 /* Build the .glink plt call stub. */
12927 if (htab
->params
->emit_stub_syms
)
12929 struct elf_link_hash_entry
*h
;
12930 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12931 TRUE
, FALSE
, FALSE
);
12934 if (h
->root
.type
== bfd_link_hash_new
)
12936 h
->root
.type
= bfd_link_hash_defined
;
12937 h
->root
.u
.def
.section
= htab
->glink
;
12938 h
->root
.u
.def
.value
= 8;
12939 h
->ref_regular
= 1;
12940 h
->def_regular
= 1;
12941 h
->ref_regular_nonweak
= 1;
12942 h
->forced_local
= 1;
12944 h
->root
.linker_def
= 1;
12947 plt0
= (htab
->elf
.splt
->output_section
->vma
12948 + htab
->elf
.splt
->output_offset
12950 if (info
->emitrelocations
)
12952 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12955 r
->r_offset
= (htab
->glink
->output_offset
12956 + htab
->glink
->output_section
->vma
);
12957 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12958 r
->r_addend
= plt0
;
12960 p
= htab
->glink
->contents
;
12961 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12962 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12966 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12968 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12970 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12972 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12974 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12976 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12978 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12980 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12982 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12984 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12989 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12991 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12993 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12995 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12997 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12999 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13001 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13003 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13005 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13007 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13009 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13011 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13014 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13016 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13018 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13022 /* Build the .glink lazy link call stubs. */
13024 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13030 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13035 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13037 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13042 bfd_put_32 (htab
->glink
->owner
,
13043 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13048 /* Build .glink global entry stubs. */
13049 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13050 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13053 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13055 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13057 if (htab
->brlt
->contents
== NULL
)
13060 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13062 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13063 htab
->relbrlt
->size
);
13064 if (htab
->relbrlt
->contents
== NULL
)
13068 /* Build the stubs as directed by the stub hash table. */
13069 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13071 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13072 if (group
->needs_save_res
)
13074 stub_sec
= group
->stub_sec
;
13075 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13077 if (htab
->params
->emit_stub_syms
)
13081 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13082 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13085 stub_sec
->size
+= htab
->sfpr
->size
;
13088 if (htab
->relbrlt
!= NULL
)
13089 htab
->relbrlt
->reloc_count
= 0;
13091 if (htab
->params
->plt_stub_align
!= 0)
13092 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13094 stub_sec
= stub_sec
->next
)
13095 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13096 stub_sec
->size
= ((stub_sec
->size
13097 + (1 << htab
->params
->plt_stub_align
) - 1)
13098 & -(1 << htab
->params
->plt_stub_align
));
13100 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13102 stub_sec
= stub_sec
->next
)
13103 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13105 stub_sec_count
+= 1;
13106 if (stub_sec
->rawsize
!= stub_sec
->size
)
13110 /* Note that the glink_eh_frame check here is not only testing that
13111 the generated size matched the calculated size but also that
13112 bfd_elf_discard_info didn't make any changes to the section. */
13113 if (stub_sec
!= NULL
13114 || (htab
->glink_eh_frame
!= NULL
13115 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13117 htab
->stub_error
= TRUE
;
13118 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13121 if (htab
->stub_error
)
13126 *stats
= bfd_malloc (500);
13127 if (*stats
== NULL
)
13130 sprintf (*stats
, _("linker stubs in %u group%s\n"
13132 " toc adjust %lu\n"
13133 " long branch %lu\n"
13134 " long toc adj %lu\n"
13136 " plt call toc %lu\n"
13137 " global entry %lu"),
13139 stub_sec_count
== 1 ? "" : "s",
13140 htab
->stub_count
[ppc_stub_long_branch
- 1],
13141 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13142 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13143 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13144 htab
->stub_count
[ppc_stub_plt_call
- 1],
13145 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13146 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13151 /* This function undoes the changes made by add_symbol_adjust. */
13154 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
13156 struct ppc_link_hash_entry
*eh
;
13158 if (h
->root
.type
== bfd_link_hash_indirect
)
13161 eh
= (struct ppc_link_hash_entry
*) h
;
13162 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
13165 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
13170 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
13172 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13175 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
13178 /* What to do when ld finds relocations against symbols defined in
13179 discarded sections. */
13181 static unsigned int
13182 ppc64_elf_action_discarded (asection
*sec
)
13184 if (strcmp (".opd", sec
->name
) == 0)
13187 if (strcmp (".toc", sec
->name
) == 0)
13190 if (strcmp (".toc1", sec
->name
) == 0)
13193 return _bfd_elf_default_action_discarded (sec
);
13196 /* The RELOCATE_SECTION function is called by the ELF backend linker
13197 to handle the relocations for a section.
13199 The relocs are always passed as Rela structures; if the section
13200 actually uses Rel structures, the r_addend field will always be
13203 This function is responsible for adjust the section contents as
13204 necessary, and (if using Rela relocs and generating a
13205 relocatable output file) adjusting the reloc addend as
13208 This function does not have to worry about setting the reloc
13209 address or the reloc symbol index.
13211 LOCAL_SYMS is a pointer to the swapped in local symbols.
13213 LOCAL_SECTIONS is an array giving the section in the input file
13214 corresponding to the st_shndx field of each local symbol.
13216 The global hash table entry for the global symbols can be found
13217 via elf_sym_hashes (input_bfd).
13219 When generating relocatable output, this function must handle
13220 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13221 going to be the section symbol corresponding to the output
13222 section, which means that the addend must be adjusted
13226 ppc64_elf_relocate_section (bfd
*output_bfd
,
13227 struct bfd_link_info
*info
,
13229 asection
*input_section
,
13230 bfd_byte
*contents
,
13231 Elf_Internal_Rela
*relocs
,
13232 Elf_Internal_Sym
*local_syms
,
13233 asection
**local_sections
)
13235 struct ppc_link_hash_table
*htab
;
13236 Elf_Internal_Shdr
*symtab_hdr
;
13237 struct elf_link_hash_entry
**sym_hashes
;
13238 Elf_Internal_Rela
*rel
;
13239 Elf_Internal_Rela
*wrel
;
13240 Elf_Internal_Rela
*relend
;
13241 Elf_Internal_Rela outrel
;
13243 struct got_entry
**local_got_ents
;
13245 bfd_boolean ret
= TRUE
;
13246 bfd_boolean is_opd
;
13247 /* Assume 'at' branch hints. */
13248 bfd_boolean is_isa_v2
= TRUE
;
13249 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
13251 /* Initialize howto table if needed. */
13252 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13255 htab
= ppc_hash_table (info
);
13259 /* Don't relocate stub sections. */
13260 if (input_section
->owner
== htab
->params
->stub_bfd
)
13263 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13265 local_got_ents
= elf_local_got_ents (input_bfd
);
13266 TOCstart
= elf_gp (output_bfd
);
13267 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13268 sym_hashes
= elf_sym_hashes (input_bfd
);
13269 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13271 rel
= wrel
= relocs
;
13272 relend
= relocs
+ input_section
->reloc_count
;
13273 for (; rel
< relend
; wrel
++, rel
++)
13275 enum elf_ppc64_reloc_type r_type
;
13277 bfd_reloc_status_type r
;
13278 Elf_Internal_Sym
*sym
;
13280 struct elf_link_hash_entry
*h_elf
;
13281 struct ppc_link_hash_entry
*h
;
13282 struct ppc_link_hash_entry
*fdh
;
13283 const char *sym_name
;
13284 unsigned long r_symndx
, toc_symndx
;
13285 bfd_vma toc_addend
;
13286 unsigned char tls_mask
, tls_gd
, tls_type
;
13287 unsigned char sym_type
;
13288 bfd_vma relocation
;
13289 bfd_boolean unresolved_reloc
;
13290 bfd_boolean warned
;
13291 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13294 struct ppc_stub_hash_entry
*stub_entry
;
13295 bfd_vma max_br_offset
;
13297 Elf_Internal_Rela orig_rel
;
13298 reloc_howto_type
*howto
;
13299 struct reloc_howto_struct alt_howto
;
13304 r_type
= ELF64_R_TYPE (rel
->r_info
);
13305 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13307 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13308 symbol of the previous ADDR64 reloc. The symbol gives us the
13309 proper TOC base to use. */
13310 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13312 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13314 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13320 unresolved_reloc
= FALSE
;
13323 if (r_symndx
< symtab_hdr
->sh_info
)
13325 /* It's a local symbol. */
13326 struct _opd_sec_data
*opd
;
13328 sym
= local_syms
+ r_symndx
;
13329 sec
= local_sections
[r_symndx
];
13330 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13331 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13332 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13333 opd
= get_opd_info (sec
);
13334 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13336 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13342 /* If this is a relocation against the opd section sym
13343 and we have edited .opd, adjust the reloc addend so
13344 that ld -r and ld --emit-relocs output is correct.
13345 If it is a reloc against some other .opd symbol,
13346 then the symbol value will be adjusted later. */
13347 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13348 rel
->r_addend
+= adjust
;
13350 relocation
+= adjust
;
13356 bfd_boolean ignored
;
13358 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13359 r_symndx
, symtab_hdr
, sym_hashes
,
13360 h_elf
, sec
, relocation
,
13361 unresolved_reloc
, warned
, ignored
);
13362 sym_name
= h_elf
->root
.root
.string
;
13363 sym_type
= h_elf
->type
;
13365 && sec
->owner
== output_bfd
13366 && strcmp (sec
->name
, ".opd") == 0)
13368 /* This is a symbol defined in a linker script. All
13369 such are defined in output sections, even those
13370 defined by simple assignment from a symbol defined in
13371 an input section. Transfer the symbol to an
13372 appropriate input .opd section, so that a branch to
13373 this symbol will be mapped to the location specified
13374 by the opd entry. */
13375 struct bfd_link_order
*lo
;
13376 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13377 if (lo
->type
== bfd_indirect_link_order
)
13379 asection
*isec
= lo
->u
.indirect
.section
;
13380 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13381 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13384 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13385 h_elf
->root
.u
.def
.section
= isec
;
13392 h
= (struct ppc_link_hash_entry
*) h_elf
;
13394 if (sec
!= NULL
&& discarded_section (sec
))
13396 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13397 input_bfd
, input_section
,
13398 contents
+ rel
->r_offset
);
13399 wrel
->r_offset
= rel
->r_offset
;
13401 wrel
->r_addend
= 0;
13403 /* For ld -r, remove relocations in debug sections against
13404 sections defined in discarded sections. Not done for
13405 non-debug to preserve relocs in .eh_frame which the
13406 eh_frame editing code expects to be present. */
13407 if (bfd_link_relocatable (info
)
13408 && (input_section
->flags
& SEC_DEBUGGING
))
13414 if (bfd_link_relocatable (info
))
13417 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13419 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13420 sec
= bfd_abs_section_ptr
;
13421 unresolved_reloc
= FALSE
;
13424 /* TLS optimizations. Replace instruction sequences and relocs
13425 based on information we collected in tls_optimize. We edit
13426 RELOCS so that --emit-relocs will output something sensible
13427 for the final instruction stream. */
13432 tls_mask
= h
->tls_mask
;
13433 else if (local_got_ents
!= NULL
)
13435 struct plt_entry
**local_plt
= (struct plt_entry
**)
13436 (local_got_ents
+ symtab_hdr
->sh_info
);
13437 unsigned char *lgot_masks
= (unsigned char *)
13438 (local_plt
+ symtab_hdr
->sh_info
);
13439 tls_mask
= lgot_masks
[r_symndx
];
13442 && (r_type
== R_PPC64_TLS
13443 || r_type
== R_PPC64_TLSGD
13444 || r_type
== R_PPC64_TLSLD
))
13446 /* Check for toc tls entries. */
13447 unsigned char *toc_tls
;
13449 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13450 &local_syms
, rel
, input_bfd
))
13454 tls_mask
= *toc_tls
;
13457 /* Check that tls relocs are used with tls syms, and non-tls
13458 relocs are used with non-tls syms. */
13459 if (r_symndx
!= STN_UNDEF
13460 && r_type
!= R_PPC64_NONE
13462 || h
->elf
.root
.type
== bfd_link_hash_defined
13463 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13464 && (IS_PPC64_TLS_RELOC (r_type
)
13465 != (sym_type
== STT_TLS
13466 || (sym_type
== STT_SECTION
13467 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13470 && (r_type
== R_PPC64_TLS
13471 || r_type
== R_PPC64_TLSGD
13472 || r_type
== R_PPC64_TLSLD
))
13473 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13476 info
->callbacks
->einfo
13477 (!IS_PPC64_TLS_RELOC (r_type
)
13478 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13479 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13480 input_bfd
, input_section
, rel
->r_offset
,
13481 ppc64_elf_howto_table
[r_type
]->name
,
13485 /* Ensure reloc mapping code below stays sane. */
13486 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13487 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13488 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13489 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13490 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13491 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13492 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13493 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13494 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13495 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13503 case R_PPC64_LO_DS_OPT
:
13504 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13505 if ((insn
& (0x3f << 26)) != 58u << 26)
13507 insn
+= (14u << 26) - (58u << 26);
13508 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13509 r_type
= R_PPC64_TOC16_LO
;
13510 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13513 case R_PPC64_TOC16
:
13514 case R_PPC64_TOC16_LO
:
13515 case R_PPC64_TOC16_DS
:
13516 case R_PPC64_TOC16_LO_DS
:
13518 /* Check for toc tls entries. */
13519 unsigned char *toc_tls
;
13522 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13523 &local_syms
, rel
, input_bfd
);
13529 tls_mask
= *toc_tls
;
13530 if (r_type
== R_PPC64_TOC16_DS
13531 || r_type
== R_PPC64_TOC16_LO_DS
)
13534 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13539 /* If we found a GD reloc pair, then we might be
13540 doing a GD->IE transition. */
13543 tls_gd
= TLS_TPRELGD
;
13544 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13547 else if (retval
== 3)
13549 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13557 case R_PPC64_GOT_TPREL16_HI
:
13558 case R_PPC64_GOT_TPREL16_HA
:
13560 && (tls_mask
& TLS_TPREL
) == 0)
13562 rel
->r_offset
-= d_offset
;
13563 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13564 r_type
= R_PPC64_NONE
;
13565 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13569 case R_PPC64_GOT_TPREL16_DS
:
13570 case R_PPC64_GOT_TPREL16_LO_DS
:
13572 && (tls_mask
& TLS_TPREL
) == 0)
13575 insn
= bfd_get_32 (output_bfd
,
13576 contents
+ rel
->r_offset
- d_offset
);
13578 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13579 bfd_put_32 (output_bfd
, insn
,
13580 contents
+ rel
->r_offset
- d_offset
);
13581 r_type
= R_PPC64_TPREL16_HA
;
13582 if (toc_symndx
!= 0)
13584 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13585 rel
->r_addend
= toc_addend
;
13586 /* We changed the symbol. Start over in order to
13587 get h, sym, sec etc. right. */
13591 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13597 && (tls_mask
& TLS_TPREL
) == 0)
13599 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13600 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13603 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13604 /* Was PPC64_TLS which sits on insn boundary, now
13605 PPC64_TPREL16_LO which is at low-order half-word. */
13606 rel
->r_offset
+= d_offset
;
13607 r_type
= R_PPC64_TPREL16_LO
;
13608 if (toc_symndx
!= 0)
13610 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13611 rel
->r_addend
= toc_addend
;
13612 /* We changed the symbol. Start over in order to
13613 get h, sym, sec etc. right. */
13617 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13621 case R_PPC64_GOT_TLSGD16_HI
:
13622 case R_PPC64_GOT_TLSGD16_HA
:
13623 tls_gd
= TLS_TPRELGD
;
13624 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13628 case R_PPC64_GOT_TLSLD16_HI
:
13629 case R_PPC64_GOT_TLSLD16_HA
:
13630 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13633 if ((tls_mask
& tls_gd
) != 0)
13634 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13635 + R_PPC64_GOT_TPREL16_DS
);
13638 rel
->r_offset
-= d_offset
;
13639 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13640 r_type
= R_PPC64_NONE
;
13642 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13646 case R_PPC64_GOT_TLSGD16
:
13647 case R_PPC64_GOT_TLSGD16_LO
:
13648 tls_gd
= TLS_TPRELGD
;
13649 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13653 case R_PPC64_GOT_TLSLD16
:
13654 case R_PPC64_GOT_TLSLD16_LO
:
13655 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13657 unsigned int insn1
, insn2
, insn3
;
13661 offset
= (bfd_vma
) -1;
13662 /* If not using the newer R_PPC64_TLSGD/LD to mark
13663 __tls_get_addr calls, we must trust that the call
13664 stays with its arg setup insns, ie. that the next
13665 reloc is the __tls_get_addr call associated with
13666 the current reloc. Edit both insns. */
13667 if (input_section
->has_tls_get_addr_call
13668 && rel
+ 1 < relend
13669 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13670 htab
->tls_get_addr
,
13671 htab
->tls_get_addr_fd
))
13672 offset
= rel
[1].r_offset
;
13673 /* We read the low GOT_TLS (or TOC16) insn because we
13674 need to keep the destination reg. It may be
13675 something other than the usual r3, and moved to r3
13676 before the call by intervening code. */
13677 insn1
= bfd_get_32 (output_bfd
,
13678 contents
+ rel
->r_offset
- d_offset
);
13679 if ((tls_mask
& tls_gd
) != 0)
13682 insn1
&= (0x1f << 21) | (0x1f << 16);
13683 insn1
|= 58 << 26; /* ld */
13684 insn2
= 0x7c636a14; /* add 3,3,13 */
13685 if (offset
!= (bfd_vma
) -1)
13686 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13687 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13688 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13689 + R_PPC64_GOT_TPREL16_DS
);
13691 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13692 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13697 insn1
&= 0x1f << 21;
13698 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13699 insn2
= 0x38630000; /* addi 3,3,0 */
13702 /* Was an LD reloc. */
13704 sec
= local_sections
[toc_symndx
];
13706 r_symndx
< symtab_hdr
->sh_info
;
13708 if (local_sections
[r_symndx
] == sec
)
13710 if (r_symndx
>= symtab_hdr
->sh_info
)
13711 r_symndx
= STN_UNDEF
;
13712 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13713 if (r_symndx
!= STN_UNDEF
)
13714 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13715 + sec
->output_offset
13716 + sec
->output_section
->vma
);
13718 else if (toc_symndx
!= 0)
13720 r_symndx
= toc_symndx
;
13721 rel
->r_addend
= toc_addend
;
13723 r_type
= R_PPC64_TPREL16_HA
;
13724 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13725 if (offset
!= (bfd_vma
) -1)
13727 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13728 R_PPC64_TPREL16_LO
);
13729 rel
[1].r_offset
= offset
+ d_offset
;
13730 rel
[1].r_addend
= rel
->r_addend
;
13733 bfd_put_32 (output_bfd
, insn1
,
13734 contents
+ rel
->r_offset
- d_offset
);
13735 if (offset
!= (bfd_vma
) -1)
13737 insn3
= bfd_get_32 (output_bfd
,
13738 contents
+ offset
+ 4);
13740 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13742 rel
[1].r_offset
+= 4;
13743 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13746 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13748 if ((tls_mask
& tls_gd
) == 0
13749 && (tls_gd
== 0 || toc_symndx
!= 0))
13751 /* We changed the symbol. Start over in order
13752 to get h, sym, sec etc. right. */
13758 case R_PPC64_TLSGD
:
13759 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13761 unsigned int insn2
, insn3
;
13762 bfd_vma offset
= rel
->r_offset
;
13764 if ((tls_mask
& TLS_TPRELGD
) != 0)
13767 r_type
= R_PPC64_NONE
;
13768 insn2
= 0x7c636a14; /* add 3,3,13 */
13773 if (toc_symndx
!= 0)
13775 r_symndx
= toc_symndx
;
13776 rel
->r_addend
= toc_addend
;
13778 r_type
= R_PPC64_TPREL16_LO
;
13779 rel
->r_offset
= offset
+ d_offset
;
13780 insn2
= 0x38630000; /* addi 3,3,0 */
13782 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13783 /* Zap the reloc on the _tls_get_addr call too. */
13784 BFD_ASSERT (offset
== rel
[1].r_offset
);
13785 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13786 insn3
= bfd_get_32 (output_bfd
,
13787 contents
+ offset
+ 4);
13789 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13791 rel
->r_offset
+= 4;
13792 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13795 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13796 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13801 case R_PPC64_TLSLD
:
13802 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13804 unsigned int insn2
, insn3
;
13805 bfd_vma offset
= rel
->r_offset
;
13808 sec
= local_sections
[toc_symndx
];
13810 r_symndx
< symtab_hdr
->sh_info
;
13812 if (local_sections
[r_symndx
] == sec
)
13814 if (r_symndx
>= symtab_hdr
->sh_info
)
13815 r_symndx
= STN_UNDEF
;
13816 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13817 if (r_symndx
!= STN_UNDEF
)
13818 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13819 + sec
->output_offset
13820 + sec
->output_section
->vma
);
13822 r_type
= R_PPC64_TPREL16_LO
;
13823 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13824 rel
->r_offset
= offset
+ d_offset
;
13825 /* Zap the reloc on the _tls_get_addr call too. */
13826 BFD_ASSERT (offset
== rel
[1].r_offset
);
13827 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13828 insn2
= 0x38630000; /* addi 3,3,0 */
13829 insn3
= bfd_get_32 (output_bfd
,
13830 contents
+ offset
+ 4);
13832 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13834 rel
->r_offset
+= 4;
13835 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13838 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13843 case R_PPC64_DTPMOD64
:
13844 if (rel
+ 1 < relend
13845 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13846 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13848 if ((tls_mask
& TLS_GD
) == 0)
13850 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13851 if ((tls_mask
& TLS_TPRELGD
) != 0)
13852 r_type
= R_PPC64_TPREL64
;
13855 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13856 r_type
= R_PPC64_NONE
;
13858 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13863 if ((tls_mask
& TLS_LD
) == 0)
13865 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13866 r_type
= R_PPC64_NONE
;
13867 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13872 case R_PPC64_TPREL64
:
13873 if ((tls_mask
& TLS_TPREL
) == 0)
13875 r_type
= R_PPC64_NONE
;
13876 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13880 case R_PPC64_ENTRY
:
13881 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13882 if (!bfd_link_pic (info
)
13883 && !info
->traditional_format
13884 && relocation
+ 0x80008000 <= 0xffffffff)
13886 unsigned int insn1
, insn2
;
13888 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13889 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13890 if ((insn1
& ~0xfffc) == LD_R2_0R12
13891 && insn2
== ADD_R2_R2_R12
)
13893 bfd_put_32 (output_bfd
,
13894 LIS_R2
+ PPC_HA (relocation
),
13895 contents
+ rel
->r_offset
);
13896 bfd_put_32 (output_bfd
,
13897 ADDI_R2_R2
+ PPC_LO (relocation
),
13898 contents
+ rel
->r_offset
+ 4);
13903 relocation
-= (rel
->r_offset
13904 + input_section
->output_offset
13905 + input_section
->output_section
->vma
);
13906 if (relocation
+ 0x80008000 <= 0xffffffff)
13908 unsigned int insn1
, insn2
;
13910 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13911 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13912 if ((insn1
& ~0xfffc) == LD_R2_0R12
13913 && insn2
== ADD_R2_R2_R12
)
13915 bfd_put_32 (output_bfd
,
13916 ADDIS_R2_R12
+ PPC_HA (relocation
),
13917 contents
+ rel
->r_offset
);
13918 bfd_put_32 (output_bfd
,
13919 ADDI_R2_R2
+ PPC_LO (relocation
),
13920 contents
+ rel
->r_offset
+ 4);
13926 case R_PPC64_REL16_HA
:
13927 /* If we are generating a non-PIC executable, edit
13928 . 0: addis 2,12,.TOC.-0b@ha
13929 . addi 2,2,.TOC.-0b@l
13930 used by ELFv2 global entry points to set up r2, to
13933 if .TOC. is in range. */
13934 if (!bfd_link_pic (info
)
13935 && !info
->traditional_format
13937 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13938 && rel
+ 1 < relend
13939 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13940 && rel
[1].r_offset
== rel
->r_offset
+ 4
13941 && rel
[1].r_addend
== rel
->r_addend
+ 4
13942 && relocation
+ 0x80008000 <= 0xffffffff)
13944 unsigned int insn1
, insn2
;
13945 bfd_vma offset
= rel
->r_offset
- d_offset
;
13946 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13947 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13948 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
13949 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
13951 r_type
= R_PPC64_ADDR16_HA
;
13952 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13953 rel
->r_addend
-= d_offset
;
13954 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13955 rel
[1].r_addend
-= d_offset
+ 4;
13956 bfd_put_32 (output_bfd
, LIS_R2
, contents
+ offset
);
13962 /* Handle other relocations that tweak non-addend part of insn. */
13964 max_br_offset
= 1 << 25;
13965 addend
= rel
->r_addend
;
13966 reloc_dest
= DEST_NORMAL
;
13972 case R_PPC64_TOCSAVE
:
13973 if (relocation
+ addend
== (rel
->r_offset
13974 + input_section
->output_offset
13975 + input_section
->output_section
->vma
)
13976 && tocsave_find (htab
, NO_INSERT
,
13977 &local_syms
, rel
, input_bfd
))
13979 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13981 || insn
== CROR_151515
|| insn
== CROR_313131
)
13982 bfd_put_32 (input_bfd
,
13983 STD_R2_0R1
+ STK_TOC (htab
),
13984 contents
+ rel
->r_offset
);
13988 /* Branch taken prediction relocations. */
13989 case R_PPC64_ADDR14_BRTAKEN
:
13990 case R_PPC64_REL14_BRTAKEN
:
13991 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13994 /* Branch not taken prediction relocations. */
13995 case R_PPC64_ADDR14_BRNTAKEN
:
13996 case R_PPC64_REL14_BRNTAKEN
:
13997 insn
|= bfd_get_32 (output_bfd
,
13998 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14001 case R_PPC64_REL14
:
14002 max_br_offset
= 1 << 15;
14005 case R_PPC64_REL24
:
14006 /* Calls to functions with a different TOC, such as calls to
14007 shared objects, need to alter the TOC pointer. This is
14008 done using a linkage stub. A REL24 branching to these
14009 linkage stubs needs to be followed by a nop, as the nop
14010 will be replaced with an instruction to restore the TOC
14015 && h
->oh
->is_func_descriptor
)
14016 fdh
= ppc_follow_link (h
->oh
);
14017 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14019 if (stub_entry
!= NULL
14020 && (stub_entry
->stub_type
== ppc_stub_plt_call
14021 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14022 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14023 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14025 bfd_boolean can_plt_call
= FALSE
;
14027 /* All of these stubs will modify r2, so there must be a
14028 branch and link followed by a nop. The nop is
14029 replaced by an insn to restore r2. */
14030 if (rel
->r_offset
+ 8 <= input_section
->size
)
14034 br
= bfd_get_32 (input_bfd
,
14035 contents
+ rel
->r_offset
);
14040 nop
= bfd_get_32 (input_bfd
,
14041 contents
+ rel
->r_offset
+ 4);
14043 || nop
== CROR_151515
|| nop
== CROR_313131
)
14046 && (h
== htab
->tls_get_addr_fd
14047 || h
== htab
->tls_get_addr
)
14048 && htab
->params
->tls_get_addr_opt
)
14050 /* Special stub used, leave nop alone. */
14053 bfd_put_32 (input_bfd
,
14054 LD_R2_0R1
+ STK_TOC (htab
),
14055 contents
+ rel
->r_offset
+ 4);
14056 can_plt_call
= TRUE
;
14061 if (!can_plt_call
&& h
!= NULL
)
14063 const char *name
= h
->elf
.root
.root
.string
;
14068 if (strncmp (name
, "__libc_start_main", 17) == 0
14069 && (name
[17] == 0 || name
[17] == '@'))
14071 /* Allow crt1 branch to go via a toc adjusting
14072 stub. Other calls that never return could do
14073 the same, if we could detect such. */
14074 can_plt_call
= TRUE
;
14080 /* g++ as of 20130507 emits self-calls without a
14081 following nop. This is arguably wrong since we
14082 have conflicting information. On the one hand a
14083 global symbol and on the other a local call
14084 sequence, but don't error for this special case.
14085 It isn't possible to cheaply verify we have
14086 exactly such a call. Allow all calls to the same
14088 asection
*code_sec
= sec
;
14090 if (get_opd_info (sec
) != NULL
)
14092 bfd_vma off
= (relocation
+ addend
14093 - sec
->output_section
->vma
14094 - sec
->output_offset
);
14096 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14098 if (code_sec
== input_section
)
14099 can_plt_call
= TRUE
;
14104 if (stub_entry
->stub_type
== ppc_stub_plt_call
14105 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14106 info
->callbacks
->einfo
14107 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14108 "recompile with -fPIC\n"),
14109 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14111 info
->callbacks
->einfo
14112 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14113 "(-mcmodel=small toc adjust stub)\n"),
14114 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14116 bfd_set_error (bfd_error_bad_value
);
14121 && (stub_entry
->stub_type
== ppc_stub_plt_call
14122 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14123 unresolved_reloc
= FALSE
;
14126 if ((stub_entry
== NULL
14127 || stub_entry
->stub_type
== ppc_stub_long_branch
14128 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14129 && get_opd_info (sec
) != NULL
)
14131 /* The branch destination is the value of the opd entry. */
14132 bfd_vma off
= (relocation
+ addend
14133 - sec
->output_section
->vma
14134 - sec
->output_offset
);
14135 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14136 if (dest
!= (bfd_vma
) -1)
14140 reloc_dest
= DEST_OPD
;
14144 /* If the branch is out of reach we ought to have a long
14146 from
= (rel
->r_offset
14147 + input_section
->output_offset
14148 + input_section
->output_section
->vma
);
14150 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14154 if (stub_entry
!= NULL
14155 && (stub_entry
->stub_type
== ppc_stub_long_branch
14156 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14157 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14158 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14159 || (relocation
+ addend
- from
+ max_br_offset
14160 < 2 * max_br_offset
)))
14161 /* Don't use the stub if this branch is in range. */
14164 if (stub_entry
!= NULL
)
14166 /* Munge up the value and addend so that we call the stub
14167 rather than the procedure directly. */
14168 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14170 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14171 relocation
+= (stub_sec
->output_offset
14172 + stub_sec
->output_section
->vma
14173 + stub_sec
->size
- htab
->sfpr
->size
14174 - htab
->sfpr
->output_offset
14175 - htab
->sfpr
->output_section
->vma
);
14177 relocation
= (stub_entry
->stub_offset
14178 + stub_sec
->output_offset
14179 + stub_sec
->output_section
->vma
);
14181 reloc_dest
= DEST_STUB
;
14183 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14184 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14185 && (ALWAYS_EMIT_R2SAVE
14186 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14187 && rel
+ 1 < relend
14188 && rel
[1].r_offset
== rel
->r_offset
+ 4
14189 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14197 /* Set 'a' bit. This is 0b00010 in BO field for branch
14198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14199 for branch on CTR insns (BO == 1a00t or 1a01t). */
14200 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14201 insn
|= 0x02 << 21;
14202 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14203 insn
|= 0x08 << 21;
14209 /* Invert 'y' bit if not the default. */
14210 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14211 insn
^= 0x01 << 21;
14214 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
14217 /* NOP out calls to undefined weak functions.
14218 We can thus call a weak function without first
14219 checking whether the function is defined. */
14221 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14222 && h
->elf
.dynindx
== -1
14223 && r_type
== R_PPC64_REL24
14227 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
14233 /* Set `addend'. */
14238 info
->callbacks
->einfo
14239 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14240 input_bfd
, (int) r_type
, sym_name
);
14242 bfd_set_error (bfd_error_bad_value
);
14248 case R_PPC64_TLSGD
:
14249 case R_PPC64_TLSLD
:
14250 case R_PPC64_TOCSAVE
:
14251 case R_PPC64_GNU_VTINHERIT
:
14252 case R_PPC64_GNU_VTENTRY
:
14253 case R_PPC64_ENTRY
:
14256 /* GOT16 relocations. Like an ADDR16 using the symbol's
14257 address in the GOT as relocation value instead of the
14258 symbol's value itself. Also, create a GOT entry for the
14259 symbol and put the symbol value there. */
14260 case R_PPC64_GOT_TLSGD16
:
14261 case R_PPC64_GOT_TLSGD16_LO
:
14262 case R_PPC64_GOT_TLSGD16_HI
:
14263 case R_PPC64_GOT_TLSGD16_HA
:
14264 tls_type
= TLS_TLS
| TLS_GD
;
14267 case R_PPC64_GOT_TLSLD16
:
14268 case R_PPC64_GOT_TLSLD16_LO
:
14269 case R_PPC64_GOT_TLSLD16_HI
:
14270 case R_PPC64_GOT_TLSLD16_HA
:
14271 tls_type
= TLS_TLS
| TLS_LD
;
14274 case R_PPC64_GOT_TPREL16_DS
:
14275 case R_PPC64_GOT_TPREL16_LO_DS
:
14276 case R_PPC64_GOT_TPREL16_HI
:
14277 case R_PPC64_GOT_TPREL16_HA
:
14278 tls_type
= TLS_TLS
| TLS_TPREL
;
14281 case R_PPC64_GOT_DTPREL16_DS
:
14282 case R_PPC64_GOT_DTPREL16_LO_DS
:
14283 case R_PPC64_GOT_DTPREL16_HI
:
14284 case R_PPC64_GOT_DTPREL16_HA
:
14285 tls_type
= TLS_TLS
| TLS_DTPREL
;
14288 case R_PPC64_GOT16
:
14289 case R_PPC64_GOT16_LO
:
14290 case R_PPC64_GOT16_HI
:
14291 case R_PPC64_GOT16_HA
:
14292 case R_PPC64_GOT16_DS
:
14293 case R_PPC64_GOT16_LO_DS
:
14296 /* Relocation is to the entry for this symbol in the global
14301 unsigned long indx
= 0;
14302 struct got_entry
*ent
;
14304 if (tls_type
== (TLS_TLS
| TLS_LD
)
14306 || !h
->elf
.def_dynamic
))
14307 ent
= ppc64_tlsld_got (input_bfd
);
14313 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14314 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
),
14316 || (bfd_link_pic (info
)
14317 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14318 /* This is actually a static link, or it is a
14319 -Bsymbolic link and the symbol is defined
14320 locally, or the symbol was forced to be local
14321 because of a version file. */
14325 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14326 indx
= h
->elf
.dynindx
;
14327 unresolved_reloc
= FALSE
;
14329 ent
= h
->elf
.got
.glist
;
14333 if (local_got_ents
== NULL
)
14335 ent
= local_got_ents
[r_symndx
];
14338 for (; ent
!= NULL
; ent
= ent
->next
)
14339 if (ent
->addend
== orig_rel
.r_addend
14340 && ent
->owner
== input_bfd
14341 && ent
->tls_type
== tls_type
)
14347 if (ent
->is_indirect
)
14348 ent
= ent
->got
.ent
;
14349 offp
= &ent
->got
.offset
;
14350 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14354 /* The offset must always be a multiple of 8. We use the
14355 least significant bit to record whether we have already
14356 processed this entry. */
14358 if ((off
& 1) != 0)
14362 /* Generate relocs for the dynamic linker, except in
14363 the case of TLSLD where we'll use one entry per
14371 ? h
->elf
.type
== STT_GNU_IFUNC
14372 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14374 relgot
= htab
->elf
.irelplt
;
14375 else if ((bfd_link_pic (info
) || indx
!= 0)
14377 || (tls_type
== (TLS_TLS
| TLS_LD
)
14378 && !h
->elf
.def_dynamic
)
14379 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14380 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14381 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14382 if (relgot
!= NULL
)
14384 outrel
.r_offset
= (got
->output_section
->vma
14385 + got
->output_offset
14387 outrel
.r_addend
= addend
;
14388 if (tls_type
& (TLS_LD
| TLS_GD
))
14390 outrel
.r_addend
= 0;
14391 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14392 if (tls_type
== (TLS_TLS
| TLS_GD
))
14394 loc
= relgot
->contents
;
14395 loc
+= (relgot
->reloc_count
++
14396 * sizeof (Elf64_External_Rela
));
14397 bfd_elf64_swap_reloca_out (output_bfd
,
14399 outrel
.r_offset
+= 8;
14400 outrel
.r_addend
= addend
;
14402 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14405 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14406 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14407 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14408 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14409 else if (indx
!= 0)
14410 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14414 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14416 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14418 /* Write the .got section contents for the sake
14420 loc
= got
->contents
+ off
;
14421 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14425 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14427 outrel
.r_addend
+= relocation
;
14428 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14430 if (htab
->elf
.tls_sec
== NULL
)
14431 outrel
.r_addend
= 0;
14433 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14436 loc
= relgot
->contents
;
14437 loc
+= (relgot
->reloc_count
++
14438 * sizeof (Elf64_External_Rela
));
14439 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14442 /* Init the .got section contents here if we're not
14443 emitting a reloc. */
14446 relocation
+= addend
;
14447 if (tls_type
== (TLS_TLS
| TLS_LD
))
14449 else if (tls_type
!= 0)
14451 if (htab
->elf
.tls_sec
== NULL
)
14455 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14456 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14457 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14460 if (tls_type
== (TLS_TLS
| TLS_GD
))
14462 bfd_put_64 (output_bfd
, relocation
,
14463 got
->contents
+ off
+ 8);
14468 bfd_put_64 (output_bfd
, relocation
,
14469 got
->contents
+ off
);
14473 if (off
>= (bfd_vma
) -2)
14476 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14477 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14481 case R_PPC64_PLT16_HA
:
14482 case R_PPC64_PLT16_HI
:
14483 case R_PPC64_PLT16_LO
:
14484 case R_PPC64_PLT32
:
14485 case R_PPC64_PLT64
:
14486 /* Relocation is to the entry for this symbol in the
14487 procedure linkage table. */
14489 /* Resolve a PLT reloc against a local symbol directly,
14490 without using the procedure linkage table. */
14494 /* It's possible that we didn't make a PLT entry for this
14495 symbol. This happens when statically linking PIC code,
14496 or when using -Bsymbolic. Go find a match if there is a
14498 if (htab
->elf
.splt
!= NULL
)
14500 struct plt_entry
*ent
;
14501 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14502 if (ent
->plt
.offset
!= (bfd_vma
) -1
14503 && ent
->addend
== orig_rel
.r_addend
)
14505 relocation
= (htab
->elf
.splt
->output_section
->vma
14506 + htab
->elf
.splt
->output_offset
14507 + ent
->plt
.offset
);
14508 unresolved_reloc
= FALSE
;
14515 /* Relocation value is TOC base. */
14516 relocation
= TOCstart
;
14517 if (r_symndx
== STN_UNDEF
)
14518 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14519 else if (unresolved_reloc
)
14521 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14522 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14524 unresolved_reloc
= TRUE
;
14527 /* TOC16 relocs. We want the offset relative to the TOC base,
14528 which is the address of the start of the TOC plus 0x8000.
14529 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14531 case R_PPC64_TOC16
:
14532 case R_PPC64_TOC16_LO
:
14533 case R_PPC64_TOC16_HI
:
14534 case R_PPC64_TOC16_DS
:
14535 case R_PPC64_TOC16_LO_DS
:
14536 case R_PPC64_TOC16_HA
:
14537 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14540 /* Relocate against the beginning of the section. */
14541 case R_PPC64_SECTOFF
:
14542 case R_PPC64_SECTOFF_LO
:
14543 case R_PPC64_SECTOFF_HI
:
14544 case R_PPC64_SECTOFF_DS
:
14545 case R_PPC64_SECTOFF_LO_DS
:
14546 case R_PPC64_SECTOFF_HA
:
14548 addend
-= sec
->output_section
->vma
;
14551 case R_PPC64_REL16
:
14552 case R_PPC64_REL16_LO
:
14553 case R_PPC64_REL16_HI
:
14554 case R_PPC64_REL16_HA
:
14555 case R_PPC64_REL16DX_HA
:
14558 case R_PPC64_REL14
:
14559 case R_PPC64_REL14_BRNTAKEN
:
14560 case R_PPC64_REL14_BRTAKEN
:
14561 case R_PPC64_REL24
:
14564 case R_PPC64_TPREL16
:
14565 case R_PPC64_TPREL16_LO
:
14566 case R_PPC64_TPREL16_HI
:
14567 case R_PPC64_TPREL16_HA
:
14568 case R_PPC64_TPREL16_DS
:
14569 case R_PPC64_TPREL16_LO_DS
:
14570 case R_PPC64_TPREL16_HIGH
:
14571 case R_PPC64_TPREL16_HIGHA
:
14572 case R_PPC64_TPREL16_HIGHER
:
14573 case R_PPC64_TPREL16_HIGHERA
:
14574 case R_PPC64_TPREL16_HIGHEST
:
14575 case R_PPC64_TPREL16_HIGHESTA
:
14577 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14578 && h
->elf
.dynindx
== -1)
14580 /* Make this relocation against an undefined weak symbol
14581 resolve to zero. This is really just a tweak, since
14582 code using weak externs ought to check that they are
14583 defined before using them. */
14584 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14586 insn
= bfd_get_32 (output_bfd
, p
);
14587 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14589 bfd_put_32 (output_bfd
, insn
, p
);
14592 if (htab
->elf
.tls_sec
!= NULL
)
14593 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14594 if (bfd_link_pic (info
))
14595 /* The TPREL16 relocs shouldn't really be used in shared
14596 libs as they will result in DT_TEXTREL being set, but
14597 support them anyway. */
14601 case R_PPC64_DTPREL16
:
14602 case R_PPC64_DTPREL16_LO
:
14603 case R_PPC64_DTPREL16_HI
:
14604 case R_PPC64_DTPREL16_HA
:
14605 case R_PPC64_DTPREL16_DS
:
14606 case R_PPC64_DTPREL16_LO_DS
:
14607 case R_PPC64_DTPREL16_HIGH
:
14608 case R_PPC64_DTPREL16_HIGHA
:
14609 case R_PPC64_DTPREL16_HIGHER
:
14610 case R_PPC64_DTPREL16_HIGHERA
:
14611 case R_PPC64_DTPREL16_HIGHEST
:
14612 case R_PPC64_DTPREL16_HIGHESTA
:
14613 if (htab
->elf
.tls_sec
!= NULL
)
14614 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14617 case R_PPC64_ADDR64_LOCAL
:
14618 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14623 case R_PPC64_DTPMOD64
:
14628 case R_PPC64_TPREL64
:
14629 if (htab
->elf
.tls_sec
!= NULL
)
14630 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14633 case R_PPC64_DTPREL64
:
14634 if (htab
->elf
.tls_sec
!= NULL
)
14635 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14638 /* Relocations that may need to be propagated if this is a
14640 case R_PPC64_REL30
:
14641 case R_PPC64_REL32
:
14642 case R_PPC64_REL64
:
14643 case R_PPC64_ADDR14
:
14644 case R_PPC64_ADDR14_BRNTAKEN
:
14645 case R_PPC64_ADDR14_BRTAKEN
:
14646 case R_PPC64_ADDR16
:
14647 case R_PPC64_ADDR16_DS
:
14648 case R_PPC64_ADDR16_HA
:
14649 case R_PPC64_ADDR16_HI
:
14650 case R_PPC64_ADDR16_HIGH
:
14651 case R_PPC64_ADDR16_HIGHA
:
14652 case R_PPC64_ADDR16_HIGHER
:
14653 case R_PPC64_ADDR16_HIGHERA
:
14654 case R_PPC64_ADDR16_HIGHEST
:
14655 case R_PPC64_ADDR16_HIGHESTA
:
14656 case R_PPC64_ADDR16_LO
:
14657 case R_PPC64_ADDR16_LO_DS
:
14658 case R_PPC64_ADDR24
:
14659 case R_PPC64_ADDR32
:
14660 case R_PPC64_ADDR64
:
14661 case R_PPC64_UADDR16
:
14662 case R_PPC64_UADDR32
:
14663 case R_PPC64_UADDR64
:
14665 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14668 if (NO_OPD_RELOCS
&& is_opd
)
14671 if ((bfd_link_pic (info
)
14673 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14674 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14675 && (must_be_dyn_reloc (info
, r_type
)
14676 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14677 || (ELIMINATE_COPY_RELOCS
14678 && !bfd_link_pic (info
)
14680 && h
->elf
.dynindx
!= -1
14681 && !h
->elf
.non_got_ref
14682 && !h
->elf
.def_regular
)
14683 || (!bfd_link_pic (info
)
14685 ? h
->elf
.type
== STT_GNU_IFUNC
14686 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14688 bfd_boolean skip
, relocate
;
14692 /* When generating a dynamic object, these relocations
14693 are copied into the output file to be resolved at run
14699 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14700 input_section
, rel
->r_offset
);
14701 if (out_off
== (bfd_vma
) -1)
14703 else if (out_off
== (bfd_vma
) -2)
14704 skip
= TRUE
, relocate
= TRUE
;
14705 out_off
+= (input_section
->output_section
->vma
14706 + input_section
->output_offset
);
14707 outrel
.r_offset
= out_off
;
14708 outrel
.r_addend
= rel
->r_addend
;
14710 /* Optimize unaligned reloc use. */
14711 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14712 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14713 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14714 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14715 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14716 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14717 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14718 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14719 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14722 memset (&outrel
, 0, sizeof outrel
);
14723 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14725 && r_type
!= R_PPC64_TOC
)
14727 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14728 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14732 /* This symbol is local, or marked to become local,
14733 or this is an opd section reloc which must point
14734 at a local function. */
14735 outrel
.r_addend
+= relocation
;
14736 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14738 if (is_opd
&& h
!= NULL
)
14740 /* Lie about opd entries. This case occurs
14741 when building shared libraries and we
14742 reference a function in another shared
14743 lib. The same thing happens for a weak
14744 definition in an application that's
14745 overridden by a strong definition in a
14746 shared lib. (I believe this is a generic
14747 bug in binutils handling of weak syms.)
14748 In these cases we won't use the opd
14749 entry in this lib. */
14750 unresolved_reloc
= FALSE
;
14753 && r_type
== R_PPC64_ADDR64
14755 ? h
->elf
.type
== STT_GNU_IFUNC
14756 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14757 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14760 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14762 /* We need to relocate .opd contents for ld.so.
14763 Prelink also wants simple and consistent rules
14764 for relocs. This make all RELATIVE relocs have
14765 *r_offset equal to r_addend. */
14774 ? h
->elf
.type
== STT_GNU_IFUNC
14775 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14777 info
->callbacks
->einfo
14778 (_("%P: %H: %s for indirect "
14779 "function `%T' unsupported\n"),
14780 input_bfd
, input_section
, rel
->r_offset
,
14781 ppc64_elf_howto_table
[r_type
]->name
,
14785 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14787 else if (sec
== NULL
|| sec
->owner
== NULL
)
14789 bfd_set_error (bfd_error_bad_value
);
14796 osec
= sec
->output_section
;
14797 indx
= elf_section_data (osec
)->dynindx
;
14801 if ((osec
->flags
& SEC_READONLY
) == 0
14802 && htab
->elf
.data_index_section
!= NULL
)
14803 osec
= htab
->elf
.data_index_section
;
14805 osec
= htab
->elf
.text_index_section
;
14806 indx
= elf_section_data (osec
)->dynindx
;
14808 BFD_ASSERT (indx
!= 0);
14810 /* We are turning this relocation into one
14811 against a section symbol, so subtract out
14812 the output section's address but not the
14813 offset of the input section in the output
14815 outrel
.r_addend
-= osec
->vma
;
14818 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14822 sreloc
= elf_section_data (input_section
)->sreloc
;
14824 ? h
->elf
.type
== STT_GNU_IFUNC
14825 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14826 sreloc
= htab
->elf
.irelplt
;
14827 if (sreloc
== NULL
)
14830 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14833 loc
= sreloc
->contents
;
14834 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14835 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14837 /* If this reloc is against an external symbol, it will
14838 be computed at runtime, so there's no need to do
14839 anything now. However, for the sake of prelink ensure
14840 that the section contents are a known value. */
14843 unresolved_reloc
= FALSE
;
14844 /* The value chosen here is quite arbitrary as ld.so
14845 ignores section contents except for the special
14846 case of .opd where the contents might be accessed
14847 before relocation. Choose zero, as that won't
14848 cause reloc overflow. */
14851 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14852 to improve backward compatibility with older
14854 if (r_type
== R_PPC64_ADDR64
)
14855 addend
= outrel
.r_addend
;
14856 /* Adjust pc_relative relocs to have zero in *r_offset. */
14857 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14858 addend
= (input_section
->output_section
->vma
14859 + input_section
->output_offset
14866 case R_PPC64_GLOB_DAT
:
14867 case R_PPC64_JMP_SLOT
:
14868 case R_PPC64_JMP_IREL
:
14869 case R_PPC64_RELATIVE
:
14870 /* We shouldn't ever see these dynamic relocs in relocatable
14872 /* Fall through. */
14874 case R_PPC64_PLTGOT16
:
14875 case R_PPC64_PLTGOT16_DS
:
14876 case R_PPC64_PLTGOT16_HA
:
14877 case R_PPC64_PLTGOT16_HI
:
14878 case R_PPC64_PLTGOT16_LO
:
14879 case R_PPC64_PLTGOT16_LO_DS
:
14880 case R_PPC64_PLTREL32
:
14881 case R_PPC64_PLTREL64
:
14882 /* These ones haven't been implemented yet. */
14884 info
->callbacks
->einfo
14885 (_("%P: %B: %s is not supported for `%T'\n"),
14887 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14889 bfd_set_error (bfd_error_invalid_operation
);
14894 /* Multi-instruction sequences that access the TOC can be
14895 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14896 to nop; addi rb,r2,x; */
14902 case R_PPC64_GOT_TLSLD16_HI
:
14903 case R_PPC64_GOT_TLSGD16_HI
:
14904 case R_PPC64_GOT_TPREL16_HI
:
14905 case R_PPC64_GOT_DTPREL16_HI
:
14906 case R_PPC64_GOT16_HI
:
14907 case R_PPC64_TOC16_HI
:
14908 /* These relocs would only be useful if building up an
14909 offset to later add to r2, perhaps in an indexed
14910 addressing mode instruction. Don't try to optimize.
14911 Unfortunately, the possibility of someone building up an
14912 offset like this or even with the HA relocs, means that
14913 we need to check the high insn when optimizing the low
14917 case R_PPC64_GOT_TLSLD16_HA
:
14918 case R_PPC64_GOT_TLSGD16_HA
:
14919 case R_PPC64_GOT_TPREL16_HA
:
14920 case R_PPC64_GOT_DTPREL16_HA
:
14921 case R_PPC64_GOT16_HA
:
14922 case R_PPC64_TOC16_HA
:
14923 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14924 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14926 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14927 bfd_put_32 (input_bfd
, NOP
, p
);
14931 case R_PPC64_GOT_TLSLD16_LO
:
14932 case R_PPC64_GOT_TLSGD16_LO
:
14933 case R_PPC64_GOT_TPREL16_LO_DS
:
14934 case R_PPC64_GOT_DTPREL16_LO_DS
:
14935 case R_PPC64_GOT16_LO
:
14936 case R_PPC64_GOT16_LO_DS
:
14937 case R_PPC64_TOC16_LO
:
14938 case R_PPC64_TOC16_LO_DS
:
14939 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14940 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14942 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14943 insn
= bfd_get_32 (input_bfd
, p
);
14944 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14946 /* Transform addic to addi when we change reg. */
14947 insn
&= ~((0x3f << 26) | (0x1f << 16));
14948 insn
|= (14u << 26) | (2 << 16);
14952 insn
&= ~(0x1f << 16);
14955 bfd_put_32 (input_bfd
, insn
, p
);
14960 /* Do any further special processing. */
14961 howto
= ppc64_elf_howto_table
[(int) r_type
];
14967 case R_PPC64_REL16_HA
:
14968 case R_PPC64_REL16DX_HA
:
14969 case R_PPC64_ADDR16_HA
:
14970 case R_PPC64_ADDR16_HIGHA
:
14971 case R_PPC64_ADDR16_HIGHERA
:
14972 case R_PPC64_ADDR16_HIGHESTA
:
14973 case R_PPC64_TOC16_HA
:
14974 case R_PPC64_SECTOFF_HA
:
14975 case R_PPC64_TPREL16_HA
:
14976 case R_PPC64_TPREL16_HIGHA
:
14977 case R_PPC64_TPREL16_HIGHERA
:
14978 case R_PPC64_TPREL16_HIGHESTA
:
14979 case R_PPC64_DTPREL16_HA
:
14980 case R_PPC64_DTPREL16_HIGHA
:
14981 case R_PPC64_DTPREL16_HIGHERA
:
14982 case R_PPC64_DTPREL16_HIGHESTA
:
14983 /* It's just possible that this symbol is a weak symbol
14984 that's not actually defined anywhere. In that case,
14985 'sec' would be NULL, and we should leave the symbol
14986 alone (it will be set to zero elsewhere in the link). */
14991 case R_PPC64_GOT16_HA
:
14992 case R_PPC64_PLTGOT16_HA
:
14993 case R_PPC64_PLT16_HA
:
14994 case R_PPC64_GOT_TLSGD16_HA
:
14995 case R_PPC64_GOT_TLSLD16_HA
:
14996 case R_PPC64_GOT_TPREL16_HA
:
14997 case R_PPC64_GOT_DTPREL16_HA
:
14998 /* Add 0x10000 if sign bit in 0:15 is set.
14999 Bits 0:15 are not used. */
15003 case R_PPC64_ADDR16_DS
:
15004 case R_PPC64_ADDR16_LO_DS
:
15005 case R_PPC64_GOT16_DS
:
15006 case R_PPC64_GOT16_LO_DS
:
15007 case R_PPC64_PLT16_LO_DS
:
15008 case R_PPC64_SECTOFF_DS
:
15009 case R_PPC64_SECTOFF_LO_DS
:
15010 case R_PPC64_TOC16_DS
:
15011 case R_PPC64_TOC16_LO_DS
:
15012 case R_PPC64_PLTGOT16_DS
:
15013 case R_PPC64_PLTGOT16_LO_DS
:
15014 case R_PPC64_GOT_TPREL16_DS
:
15015 case R_PPC64_GOT_TPREL16_LO_DS
:
15016 case R_PPC64_GOT_DTPREL16_DS
:
15017 case R_PPC64_GOT_DTPREL16_LO_DS
:
15018 case R_PPC64_TPREL16_DS
:
15019 case R_PPC64_TPREL16_LO_DS
:
15020 case R_PPC64_DTPREL16_DS
:
15021 case R_PPC64_DTPREL16_LO_DS
:
15022 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15024 /* If this reloc is against an lq, lxv, or stxv insn, then
15025 the value must be a multiple of 16. This is somewhat of
15026 a hack, but the "correct" way to do this by defining _DQ
15027 forms of all the _DS relocs bloats all reloc switches in
15028 this file. It doesn't make much sense to use these
15029 relocs in data, so testing the insn should be safe. */
15030 if ((insn
& (0x3f << 26)) == (56u << 26)
15031 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15033 relocation
+= addend
;
15034 addend
= insn
& (mask
^ 3);
15035 if ((relocation
& mask
) != 0)
15037 relocation
^= relocation
& mask
;
15038 info
->callbacks
->einfo
15039 (_("%P: %H: error: %s not a multiple of %u\n"),
15040 input_bfd
, input_section
, rel
->r_offset
,
15043 bfd_set_error (bfd_error_bad_value
);
15050 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15051 because such sections are not SEC_ALLOC and thus ld.so will
15052 not process them. */
15053 if (unresolved_reloc
15054 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15055 && h
->elf
.def_dynamic
)
15056 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15057 rel
->r_offset
) != (bfd_vma
) -1)
15059 info
->callbacks
->einfo
15060 (_("%P: %H: unresolvable %s against `%T'\n"),
15061 input_bfd
, input_section
, rel
->r_offset
,
15063 h
->elf
.root
.root
.string
);
15067 /* 16-bit fields in insns mostly have signed values, but a
15068 few insns have 16-bit unsigned values. Really, we should
15069 have different reloc types. */
15070 if (howto
->complain_on_overflow
!= complain_overflow_dont
15071 && howto
->dst_mask
== 0xffff
15072 && (input_section
->flags
& SEC_CODE
) != 0)
15074 enum complain_overflow complain
= complain_overflow_signed
;
15076 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15077 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15078 complain
= complain_overflow_bitfield
;
15079 else if (howto
->rightshift
== 0
15080 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15081 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15082 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15083 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15084 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15085 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15086 complain
= complain_overflow_unsigned
;
15087 if (howto
->complain_on_overflow
!= complain
)
15089 alt_howto
= *howto
;
15090 alt_howto
.complain_on_overflow
= complain
;
15091 howto
= &alt_howto
;
15095 if (r_type
== R_PPC64_REL16DX_HA
)
15097 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15098 if (rel
->r_offset
+ 4 > input_section
->size
)
15099 r
= bfd_reloc_outofrange
;
15102 relocation
+= addend
;
15103 relocation
-= (rel
->r_offset
15104 + input_section
->output_offset
15105 + input_section
->output_section
->vma
);
15106 relocation
= (bfd_signed_vma
) relocation
>> 16;
15107 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15109 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15110 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15112 if (relocation
+ 0x8000 > 0xffff)
15113 r
= bfd_reloc_overflow
;
15117 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15118 rel
->r_offset
, relocation
, addend
);
15120 if (r
!= bfd_reloc_ok
)
15122 char *more_info
= NULL
;
15123 const char *reloc_name
= howto
->name
;
15125 if (reloc_dest
!= DEST_NORMAL
)
15127 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15128 if (more_info
!= NULL
)
15130 strcpy (more_info
, reloc_name
);
15131 strcat (more_info
, (reloc_dest
== DEST_OPD
15132 ? " (OPD)" : " (stub)"));
15133 reloc_name
= more_info
;
15137 if (r
== bfd_reloc_overflow
)
15139 /* On code like "if (foo) foo();" don't report overflow
15140 on a branch to zero when foo is undefined. */
15142 && (reloc_dest
== DEST_STUB
15144 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15145 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15146 && is_branch_reloc (r_type
))))
15148 if (!((*info
->callbacks
->reloc_overflow
)
15149 (info
, &h
->elf
.root
, sym_name
,
15150 reloc_name
, orig_rel
.r_addend
,
15151 input_bfd
, input_section
, rel
->r_offset
)))
15157 info
->callbacks
->einfo
15158 (_("%P: %H: %s against `%T': error %d\n"),
15159 input_bfd
, input_section
, rel
->r_offset
,
15160 reloc_name
, sym_name
, (int) r
);
15163 if (more_info
!= NULL
)
15173 Elf_Internal_Shdr
*rel_hdr
;
15174 size_t deleted
= rel
- wrel
;
15176 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15177 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15178 if (rel_hdr
->sh_size
== 0)
15180 /* It is too late to remove an empty reloc section. Leave
15182 ??? What is wrong with an empty section??? */
15183 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15186 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15187 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15188 input_section
->reloc_count
-= deleted
;
15191 /* If we're emitting relocations, then shortly after this function
15192 returns, reloc offsets and addends for this section will be
15193 adjusted. Worse, reloc symbol indices will be for the output
15194 file rather than the input. Save a copy of the relocs for
15195 opd_entry_value. */
15196 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15199 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15200 rel
= bfd_alloc (input_bfd
, amt
);
15201 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15202 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15205 memcpy (rel
, relocs
, amt
);
15210 /* Adjust the value of any local symbols in opd sections. */
15213 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15214 const char *name ATTRIBUTE_UNUSED
,
15215 Elf_Internal_Sym
*elfsym
,
15216 asection
*input_sec
,
15217 struct elf_link_hash_entry
*h
)
15219 struct _opd_sec_data
*opd
;
15226 opd
= get_opd_info (input_sec
);
15227 if (opd
== NULL
|| opd
->adjust
== NULL
)
15230 value
= elfsym
->st_value
- input_sec
->output_offset
;
15231 if (!bfd_link_relocatable (info
))
15232 value
-= input_sec
->output_section
->vma
;
15234 adjust
= opd
->adjust
[OPD_NDX (value
)];
15238 elfsym
->st_value
+= adjust
;
15242 /* Finish up dynamic symbol handling. We set the contents of various
15243 dynamic sections here. */
15246 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15247 struct bfd_link_info
*info
,
15248 struct elf_link_hash_entry
*h
,
15249 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
15251 struct ppc_link_hash_table
*htab
;
15252 struct plt_entry
*ent
;
15253 Elf_Internal_Rela rela
;
15256 htab
= ppc_hash_table (info
);
15260 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15261 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15263 /* This symbol has an entry in the procedure linkage
15264 table. Set it up. */
15265 if (!htab
->elf
.dynamic_sections_created
15266 || h
->dynindx
== -1)
15268 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15270 && (h
->root
.type
== bfd_link_hash_defined
15271 || h
->root
.type
== bfd_link_hash_defweak
));
15272 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15273 + htab
->elf
.iplt
->output_offset
15274 + ent
->plt
.offset
);
15276 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15278 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15279 rela
.r_addend
= (h
->root
.u
.def
.value
15280 + h
->root
.u
.def
.section
->output_offset
15281 + h
->root
.u
.def
.section
->output_section
->vma
15283 loc
= (htab
->elf
.irelplt
->contents
15284 + (htab
->elf
.irelplt
->reloc_count
++
15285 * sizeof (Elf64_External_Rela
)));
15289 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15290 + htab
->elf
.splt
->output_offset
15291 + ent
->plt
.offset
);
15292 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15293 rela
.r_addend
= ent
->addend
;
15294 loc
= (htab
->elf
.srelplt
->contents
15295 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15296 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15298 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15300 if (!htab
->opd_abi
)
15302 if (!h
->def_regular
)
15304 /* Mark the symbol as undefined, rather than as
15305 defined in glink. Leave the value if there were
15306 any relocations where pointer equality matters
15307 (this is a clue for the dynamic linker, to make
15308 function pointer comparisons work between an
15309 application and shared library), otherwise set it
15311 sym
->st_shndx
= SHN_UNDEF
;
15312 if (!h
->pointer_equality_needed
)
15314 else if (!h
->ref_regular_nonweak
)
15316 /* This breaks function pointer comparisons, but
15317 that is better than breaking tests for a NULL
15318 function pointer. */
15327 /* This symbol needs a copy reloc. Set it up. */
15329 if (h
->dynindx
== -1
15330 || (h
->root
.type
!= bfd_link_hash_defined
15331 && h
->root
.type
!= bfd_link_hash_defweak
)
15332 || htab
->relbss
== NULL
)
15335 rela
.r_offset
= (h
->root
.u
.def
.value
15336 + h
->root
.u
.def
.section
->output_section
->vma
15337 + h
->root
.u
.def
.section
->output_offset
);
15338 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15340 loc
= htab
->relbss
->contents
;
15341 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15342 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15348 /* Used to decide how to sort relocs in an optimal manner for the
15349 dynamic linker, before writing them out. */
15351 static enum elf_reloc_type_class
15352 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15353 const asection
*rel_sec
,
15354 const Elf_Internal_Rela
*rela
)
15356 enum elf_ppc64_reloc_type r_type
;
15357 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15359 if (rel_sec
== htab
->elf
.irelplt
)
15360 return reloc_class_ifunc
;
15362 r_type
= ELF64_R_TYPE (rela
->r_info
);
15365 case R_PPC64_RELATIVE
:
15366 return reloc_class_relative
;
15367 case R_PPC64_JMP_SLOT
:
15368 return reloc_class_plt
;
15370 return reloc_class_copy
;
15372 return reloc_class_normal
;
15376 /* Finish up the dynamic sections. */
15379 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15380 struct bfd_link_info
*info
)
15382 struct ppc_link_hash_table
*htab
;
15386 htab
= ppc_hash_table (info
);
15390 dynobj
= htab
->elf
.dynobj
;
15391 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15393 if (htab
->elf
.dynamic_sections_created
)
15395 Elf64_External_Dyn
*dyncon
, *dynconend
;
15397 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15400 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15401 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15402 for (; dyncon
< dynconend
; dyncon
++)
15404 Elf_Internal_Dyn dyn
;
15407 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15414 case DT_PPC64_GLINK
:
15416 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15417 /* We stupidly defined DT_PPC64_GLINK to be the start
15418 of glink rather than the first entry point, which is
15419 what ld.so needs, and now have a bigger stub to
15420 support automatic multiple TOCs. */
15421 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15425 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15428 dyn
.d_un
.d_ptr
= s
->vma
;
15432 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15433 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15436 case DT_PPC64_OPDSZ
:
15437 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15440 dyn
.d_un
.d_val
= s
->size
;
15444 s
= htab
->elf
.splt
;
15445 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15449 s
= htab
->elf
.srelplt
;
15450 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15454 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15458 /* Don't count procedure linkage table relocs in the
15459 overall reloc count. */
15460 s
= htab
->elf
.srelplt
;
15463 dyn
.d_un
.d_val
-= s
->size
;
15467 /* We may not be using the standard ELF linker script.
15468 If .rela.plt is the first .rela section, we adjust
15469 DT_RELA to not include it. */
15470 s
= htab
->elf
.srelplt
;
15473 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
15475 dyn
.d_un
.d_ptr
+= s
->size
;
15479 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15483 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15485 /* Fill in the first entry in the global offset table.
15486 We use it to hold the link-time TOCbase. */
15487 bfd_put_64 (output_bfd
,
15488 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15489 htab
->elf
.sgot
->contents
);
15491 /* Set .got entry size. */
15492 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15495 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15497 /* Set .plt entry size. */
15498 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15499 = PLT_ENTRY_SIZE (htab
);
15502 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15503 brlt ourselves if emitrelocations. */
15504 if (htab
->brlt
!= NULL
15505 && htab
->brlt
->reloc_count
!= 0
15506 && !_bfd_elf_link_output_relocs (output_bfd
,
15508 elf_section_data (htab
->brlt
)->rela
.hdr
,
15509 elf_section_data (htab
->brlt
)->relocs
,
15513 if (htab
->glink
!= NULL
15514 && htab
->glink
->reloc_count
!= 0
15515 && !_bfd_elf_link_output_relocs (output_bfd
,
15517 elf_section_data (htab
->glink
)->rela
.hdr
,
15518 elf_section_data (htab
->glink
)->relocs
,
15522 if (htab
->glink_eh_frame
!= NULL
15523 && htab
->glink_eh_frame
->size
!= 0)
15527 asection
*stub_sec
;
15529 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15530 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15532 stub_sec
= stub_sec
->next
)
15533 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15539 /* Offset to stub section. */
15540 val
= (stub_sec
->output_section
->vma
15541 + stub_sec
->output_offset
);
15542 val
-= (htab
->glink_eh_frame
->output_section
->vma
15543 + htab
->glink_eh_frame
->output_offset
15544 + (p
- htab
->glink_eh_frame
->contents
));
15545 if (val
+ 0x80000000 > 0xffffffff)
15547 info
->callbacks
->einfo
15548 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15552 bfd_put_32 (dynobj
, val
, p
);
15554 /* stub section size. */
15556 /* Augmentation. */
15561 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15567 /* Offset to .glink. */
15568 val
= (htab
->glink
->output_section
->vma
15569 + htab
->glink
->output_offset
15571 val
-= (htab
->glink_eh_frame
->output_section
->vma
15572 + htab
->glink_eh_frame
->output_offset
15573 + (p
- htab
->glink_eh_frame
->contents
));
15574 if (val
+ 0x80000000 > 0xffffffff)
15576 info
->callbacks
->einfo
15577 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15578 htab
->glink
->name
);
15581 bfd_put_32 (dynobj
, val
, p
);
15585 /* Augmentation. */
15591 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15592 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15593 htab
->glink_eh_frame
,
15594 htab
->glink_eh_frame
->contents
))
15598 /* We need to handle writing out multiple GOT sections ourselves,
15599 since we didn't add them to DYNOBJ. We know dynobj is the first
15601 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15605 if (!is_ppc64_elf (dynobj
))
15608 s
= ppc64_elf_tdata (dynobj
)->got
;
15611 && s
->output_section
!= bfd_abs_section_ptr
15612 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15613 s
->contents
, s
->output_offset
,
15616 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15619 && s
->output_section
!= bfd_abs_section_ptr
15620 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15621 s
->contents
, s
->output_offset
,
15629 #include "elf64-target.h"
15631 /* FreeBSD support */
15633 #undef TARGET_LITTLE_SYM
15634 #undef TARGET_LITTLE_NAME
15636 #undef TARGET_BIG_SYM
15637 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15638 #undef TARGET_BIG_NAME
15639 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15642 #define ELF_OSABI ELFOSABI_FREEBSD
15645 #define elf64_bed elf64_powerpc_fbsd_bed
15647 #include "elf64-target.h"