1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
125 /* The name of the dynamic interpreter. This is put in the .interp
127 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
129 /* The size in bytes of an entry in the procedure linkage table. */
130 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
132 /* The initial size of the plt reserved for the dynamic linker. */
133 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
135 /* Offsets to some stack save slots. */
137 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
138 /* This one is dodgy. ELFv2 does not have a linker word, so use the
139 CR save slot. Used only by optimised __tls_get_addr call stub,
140 relying on __tls_get_addr_opt not saving CR.. */
141 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
143 /* TOC base pointers offset from start of TOC. */
144 #define TOC_BASE_OFF 0x8000
145 /* TOC base alignment. */
146 #define TOC_BASE_ALIGN 256
148 /* Offset of tp and dtp pointers from start of TLS block. */
149 #define TP_OFFSET 0x7000
150 #define DTP_OFFSET 0x8000
152 /* .plt call stub instructions. The normal stub is like this, but
153 sometimes the .plt entry crosses a 64k boundary and we need to
154 insert an addi to adjust r11. */
155 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
156 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
157 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
158 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
159 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
160 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
161 #define BCTR 0x4e800420 /* bctr */
163 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
164 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
165 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
167 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
168 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
169 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
170 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
171 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
172 #define BNECTR 0x4ca20420 /* bnectr+ */
173 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
175 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
176 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
177 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
179 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
180 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
181 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
183 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
184 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
185 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
186 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
187 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
189 /* glink call stub instructions. We enter with the index in R0. */
190 #define GLINK_CALL_STUB_SIZE (16*4)
194 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
195 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
197 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
198 /* ld %2,(0b-1b)(%11) */
199 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
200 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
206 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
207 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
208 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
209 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
210 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
213 #define NOP 0x60000000
215 /* Some other nops. */
216 #define CROR_151515 0x4def7b82
217 #define CROR_313131 0x4ffffb82
219 /* .glink entries for the first 32k functions are two instructions. */
220 #define LI_R0_0 0x38000000 /* li %r0,0 */
221 #define B_DOT 0x48000000 /* b . */
223 /* After that, we need two instructions to load the index, followed by
225 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
226 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
228 /* Instructions used by the save and restore reg functions. */
229 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
230 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
231 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
232 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
233 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
234 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
235 #define LI_R12_0 0x39800000 /* li %r12,0 */
236 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
237 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
238 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
239 #define BLR 0x4e800020 /* blr */
241 /* Since .opd is an array of descriptors and each entry will end up
242 with identical R_PPC64_RELATIVE relocs, there is really no need to
243 propagate .opd relocs; The dynamic linker should be taught to
244 relocate .opd without reloc entries. */
245 #ifndef NO_OPD_RELOCS
246 #define NO_OPD_RELOCS 0
250 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
254 abiversion (bfd
*abfd
)
256 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
260 set_abiversion (bfd
*abfd
, int ver
)
262 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
263 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
266 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
268 /* Relocation HOWTO's. */
269 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
271 static reloc_howto_type ppc64_elf_howto_raw
[] = {
272 /* This reloc does nothing. */
273 HOWTO (R_PPC64_NONE
, /* type */
275 3, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_dont
, /* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_PPC64_NONE", /* name */
282 FALSE
, /* partial_inplace */
285 FALSE
), /* pcrel_offset */
287 /* A standard 32 bit relocation. */
288 HOWTO (R_PPC64_ADDR32
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE
, /* pc_relative */
294 complain_overflow_bitfield
, /* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_PPC64_ADDR32", /* name */
297 FALSE
, /* partial_inplace */
299 0xffffffff, /* dst_mask */
300 FALSE
), /* pcrel_offset */
302 /* An absolute 26 bit branch; the lower two bits must be zero.
303 FIXME: we don't check that, we just clear them. */
304 HOWTO (R_PPC64_ADDR24
, /* type */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE
, /* pc_relative */
310 complain_overflow_bitfield
, /* complain_on_overflow */
311 bfd_elf_generic_reloc
, /* special_function */
312 "R_PPC64_ADDR24", /* name */
313 FALSE
, /* partial_inplace */
315 0x03fffffc, /* dst_mask */
316 FALSE
), /* pcrel_offset */
318 /* A standard 16 bit relocation. */
319 HOWTO (R_PPC64_ADDR16
, /* type */
321 1, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE
, /* pc_relative */
325 complain_overflow_bitfield
, /* complain_on_overflow */
326 bfd_elf_generic_reloc
, /* special_function */
327 "R_PPC64_ADDR16", /* name */
328 FALSE
, /* partial_inplace */
330 0xffff, /* dst_mask */
331 FALSE
), /* pcrel_offset */
333 /* A 16 bit relocation without overflow. */
334 HOWTO (R_PPC64_ADDR16_LO
, /* type */
336 1, /* size (0 = byte, 1 = short, 2 = long) */
338 FALSE
, /* pc_relative */
340 complain_overflow_dont
,/* complain_on_overflow */
341 bfd_elf_generic_reloc
, /* special_function */
342 "R_PPC64_ADDR16_LO", /* name */
343 FALSE
, /* partial_inplace */
345 0xffff, /* dst_mask */
346 FALSE
), /* pcrel_offset */
348 /* Bits 16-31 of an address. */
349 HOWTO (R_PPC64_ADDR16_HI
, /* type */
351 1, /* size (0 = byte, 1 = short, 2 = long) */
353 FALSE
, /* pc_relative */
355 complain_overflow_signed
, /* complain_on_overflow */
356 bfd_elf_generic_reloc
, /* special_function */
357 "R_PPC64_ADDR16_HI", /* name */
358 FALSE
, /* partial_inplace */
360 0xffff, /* dst_mask */
361 FALSE
), /* pcrel_offset */
363 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
364 bits, treated as a signed number, is negative. */
365 HOWTO (R_PPC64_ADDR16_HA
, /* type */
367 1, /* size (0 = byte, 1 = short, 2 = long) */
369 FALSE
, /* pc_relative */
371 complain_overflow_signed
, /* complain_on_overflow */
372 ppc64_elf_ha_reloc
, /* special_function */
373 "R_PPC64_ADDR16_HA", /* name */
374 FALSE
, /* partial_inplace */
376 0xffff, /* dst_mask */
377 FALSE
), /* pcrel_offset */
379 /* An absolute 16 bit branch; the lower two bits must be zero.
380 FIXME: we don't check that, we just clear them. */
381 HOWTO (R_PPC64_ADDR14
, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE
, /* pc_relative */
387 complain_overflow_signed
, /* complain_on_overflow */
388 ppc64_elf_branch_reloc
, /* special_function */
389 "R_PPC64_ADDR14", /* name */
390 FALSE
, /* partial_inplace */
392 0x0000fffc, /* dst_mask */
393 FALSE
), /* pcrel_offset */
395 /* An absolute 16 bit branch, for which bit 10 should be set to
396 indicate that the branch is expected to be taken. The lower two
397 bits must be zero. */
398 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
400 2, /* size (0 = byte, 1 = short, 2 = long) */
402 FALSE
, /* pc_relative */
404 complain_overflow_signed
, /* complain_on_overflow */
405 ppc64_elf_brtaken_reloc
, /* special_function */
406 "R_PPC64_ADDR14_BRTAKEN",/* name */
407 FALSE
, /* partial_inplace */
409 0x0000fffc, /* dst_mask */
410 FALSE
), /* pcrel_offset */
412 /* An absolute 16 bit branch, for which bit 10 should be set to
413 indicate that the branch is not expected to be taken. The lower
414 two bits must be zero. */
415 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
417 2, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE
, /* pc_relative */
421 complain_overflow_signed
, /* complain_on_overflow */
422 ppc64_elf_brtaken_reloc
, /* special_function */
423 "R_PPC64_ADDR14_BRNTAKEN",/* name */
424 FALSE
, /* partial_inplace */
426 0x0000fffc, /* dst_mask */
427 FALSE
), /* pcrel_offset */
429 /* A relative 26 bit branch; the lower two bits must be zero. */
430 HOWTO (R_PPC64_REL24
, /* type */
432 2, /* size (0 = byte, 1 = short, 2 = long) */
434 TRUE
, /* pc_relative */
436 complain_overflow_signed
, /* complain_on_overflow */
437 ppc64_elf_branch_reloc
, /* special_function */
438 "R_PPC64_REL24", /* name */
439 FALSE
, /* partial_inplace */
441 0x03fffffc, /* dst_mask */
442 TRUE
), /* pcrel_offset */
444 /* A relative 16 bit branch; the lower two bits must be zero. */
445 HOWTO (R_PPC64_REL14
, /* type */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
449 TRUE
, /* pc_relative */
451 complain_overflow_signed
, /* complain_on_overflow */
452 ppc64_elf_branch_reloc
, /* special_function */
453 "R_PPC64_REL14", /* name */
454 FALSE
, /* partial_inplace */
456 0x0000fffc, /* dst_mask */
457 TRUE
), /* pcrel_offset */
459 /* A relative 16 bit branch. Bit 10 should be set to indicate that
460 the branch is expected to be taken. The lower two bits must be
462 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
466 TRUE
, /* pc_relative */
468 complain_overflow_signed
, /* complain_on_overflow */
469 ppc64_elf_brtaken_reloc
, /* special_function */
470 "R_PPC64_REL14_BRTAKEN", /* name */
471 FALSE
, /* partial_inplace */
473 0x0000fffc, /* dst_mask */
474 TRUE
), /* pcrel_offset */
476 /* A relative 16 bit branch. Bit 10 should be set to indicate that
477 the branch is not expected to be taken. The lower two bits must
479 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE
, /* pc_relative */
485 complain_overflow_signed
, /* complain_on_overflow */
486 ppc64_elf_brtaken_reloc
, /* special_function */
487 "R_PPC64_REL14_BRNTAKEN",/* name */
488 FALSE
, /* partial_inplace */
490 0x0000fffc, /* dst_mask */
491 TRUE
), /* pcrel_offset */
493 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
495 HOWTO (R_PPC64_GOT16
, /* type */
497 1, /* size (0 = byte, 1 = short, 2 = long) */
499 FALSE
, /* pc_relative */
501 complain_overflow_signed
, /* complain_on_overflow */
502 ppc64_elf_unhandled_reloc
, /* special_function */
503 "R_PPC64_GOT16", /* name */
504 FALSE
, /* partial_inplace */
506 0xffff, /* dst_mask */
507 FALSE
), /* pcrel_offset */
509 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
511 HOWTO (R_PPC64_GOT16_LO
, /* type */
513 1, /* size (0 = byte, 1 = short, 2 = long) */
515 FALSE
, /* pc_relative */
517 complain_overflow_dont
, /* complain_on_overflow */
518 ppc64_elf_unhandled_reloc
, /* special_function */
519 "R_PPC64_GOT16_LO", /* name */
520 FALSE
, /* partial_inplace */
522 0xffff, /* dst_mask */
523 FALSE
), /* pcrel_offset */
525 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
527 HOWTO (R_PPC64_GOT16_HI
, /* type */
529 1, /* size (0 = byte, 1 = short, 2 = long) */
531 FALSE
, /* pc_relative */
533 complain_overflow_signed
,/* complain_on_overflow */
534 ppc64_elf_unhandled_reloc
, /* special_function */
535 "R_PPC64_GOT16_HI", /* name */
536 FALSE
, /* partial_inplace */
538 0xffff, /* dst_mask */
539 FALSE
), /* pcrel_offset */
541 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
543 HOWTO (R_PPC64_GOT16_HA
, /* type */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE
, /* pc_relative */
549 complain_overflow_signed
,/* complain_on_overflow */
550 ppc64_elf_unhandled_reloc
, /* special_function */
551 "R_PPC64_GOT16_HA", /* name */
552 FALSE
, /* partial_inplace */
554 0xffff, /* dst_mask */
555 FALSE
), /* pcrel_offset */
557 /* This is used only by the dynamic linker. The symbol should exist
558 both in the object being run and in some shared library. The
559 dynamic linker copies the data addressed by the symbol from the
560 shared library into the object, because the object being
561 run has to have the data at some particular address. */
562 HOWTO (R_PPC64_COPY
, /* type */
564 0, /* this one is variable size */
566 FALSE
, /* pc_relative */
568 complain_overflow_dont
, /* complain_on_overflow */
569 ppc64_elf_unhandled_reloc
, /* special_function */
570 "R_PPC64_COPY", /* name */
571 FALSE
, /* partial_inplace */
574 FALSE
), /* pcrel_offset */
576 /* Like R_PPC64_ADDR64, but used when setting global offset table
578 HOWTO (R_PPC64_GLOB_DAT
, /* type */
580 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
582 FALSE
, /* pc_relative */
584 complain_overflow_dont
, /* complain_on_overflow */
585 ppc64_elf_unhandled_reloc
, /* special_function */
586 "R_PPC64_GLOB_DAT", /* name */
587 FALSE
, /* partial_inplace */
589 ONES (64), /* dst_mask */
590 FALSE
), /* pcrel_offset */
592 /* Created by the link editor. Marks a procedure linkage table
593 entry for a symbol. */
594 HOWTO (R_PPC64_JMP_SLOT
, /* type */
596 0, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE
, /* pc_relative */
600 complain_overflow_dont
, /* complain_on_overflow */
601 ppc64_elf_unhandled_reloc
, /* special_function */
602 "R_PPC64_JMP_SLOT", /* name */
603 FALSE
, /* partial_inplace */
606 FALSE
), /* pcrel_offset */
608 /* Used only by the dynamic linker. When the object is run, this
609 doubleword64 is set to the load address of the object, plus the
611 HOWTO (R_PPC64_RELATIVE
, /* type */
613 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
615 FALSE
, /* pc_relative */
617 complain_overflow_dont
, /* complain_on_overflow */
618 bfd_elf_generic_reloc
, /* special_function */
619 "R_PPC64_RELATIVE", /* name */
620 FALSE
, /* partial_inplace */
622 ONES (64), /* dst_mask */
623 FALSE
), /* pcrel_offset */
625 /* Like R_PPC64_ADDR32, but may be unaligned. */
626 HOWTO (R_PPC64_UADDR32
, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE
, /* pc_relative */
632 complain_overflow_bitfield
, /* complain_on_overflow */
633 bfd_elf_generic_reloc
, /* special_function */
634 "R_PPC64_UADDR32", /* name */
635 FALSE
, /* partial_inplace */
637 0xffffffff, /* dst_mask */
638 FALSE
), /* pcrel_offset */
640 /* Like R_PPC64_ADDR16, but may be unaligned. */
641 HOWTO (R_PPC64_UADDR16
, /* type */
643 1, /* size (0 = byte, 1 = short, 2 = long) */
645 FALSE
, /* pc_relative */
647 complain_overflow_bitfield
, /* complain_on_overflow */
648 bfd_elf_generic_reloc
, /* special_function */
649 "R_PPC64_UADDR16", /* name */
650 FALSE
, /* partial_inplace */
652 0xffff, /* dst_mask */
653 FALSE
), /* pcrel_offset */
655 /* 32-bit PC relative. */
656 HOWTO (R_PPC64_REL32
, /* type */
658 2, /* size (0 = byte, 1 = short, 2 = long) */
660 TRUE
, /* pc_relative */
662 complain_overflow_signed
, /* complain_on_overflow */
663 bfd_elf_generic_reloc
, /* special_function */
664 "R_PPC64_REL32", /* name */
665 FALSE
, /* partial_inplace */
667 0xffffffff, /* dst_mask */
668 TRUE
), /* pcrel_offset */
670 /* 32-bit relocation to the symbol's procedure linkage table. */
671 HOWTO (R_PPC64_PLT32
, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 FALSE
, /* pc_relative */
677 complain_overflow_bitfield
, /* complain_on_overflow */
678 ppc64_elf_unhandled_reloc
, /* special_function */
679 "R_PPC64_PLT32", /* name */
680 FALSE
, /* partial_inplace */
682 0xffffffff, /* dst_mask */
683 FALSE
), /* pcrel_offset */
685 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
686 FIXME: R_PPC64_PLTREL32 not supported. */
687 HOWTO (R_PPC64_PLTREL32
, /* type */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
691 TRUE
, /* pc_relative */
693 complain_overflow_signed
, /* complain_on_overflow */
694 ppc64_elf_unhandled_reloc
, /* special_function */
695 "R_PPC64_PLTREL32", /* name */
696 FALSE
, /* partial_inplace */
698 0xffffffff, /* dst_mask */
699 TRUE
), /* pcrel_offset */
701 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
703 HOWTO (R_PPC64_PLT16_LO
, /* type */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE
, /* pc_relative */
709 complain_overflow_dont
, /* complain_on_overflow */
710 ppc64_elf_unhandled_reloc
, /* special_function */
711 "R_PPC64_PLT16_LO", /* name */
712 FALSE
, /* partial_inplace */
714 0xffff, /* dst_mask */
715 FALSE
), /* pcrel_offset */
717 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
719 HOWTO (R_PPC64_PLT16_HI
, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE
, /* pc_relative */
725 complain_overflow_signed
, /* complain_on_overflow */
726 ppc64_elf_unhandled_reloc
, /* special_function */
727 "R_PPC64_PLT16_HI", /* name */
728 FALSE
, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE
), /* pcrel_offset */
733 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
735 HOWTO (R_PPC64_PLT16_HA
, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE
, /* pc_relative */
741 complain_overflow_signed
, /* complain_on_overflow */
742 ppc64_elf_unhandled_reloc
, /* special_function */
743 "R_PPC64_PLT16_HA", /* name */
744 FALSE
, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE
), /* pcrel_offset */
749 /* 16-bit section relative relocation. */
750 HOWTO (R_PPC64_SECTOFF
, /* type */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE
, /* pc_relative */
756 complain_overflow_signed
, /* complain_on_overflow */
757 ppc64_elf_sectoff_reloc
, /* special_function */
758 "R_PPC64_SECTOFF", /* name */
759 FALSE
, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE
), /* pcrel_offset */
764 /* Like R_PPC64_SECTOFF, but no overflow warning. */
765 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
767 1, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE
, /* pc_relative */
771 complain_overflow_dont
, /* complain_on_overflow */
772 ppc64_elf_sectoff_reloc
, /* special_function */
773 "R_PPC64_SECTOFF_LO", /* name */
774 FALSE
, /* partial_inplace */
776 0xffff, /* dst_mask */
777 FALSE
), /* pcrel_offset */
779 /* 16-bit upper half section relative relocation. */
780 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
782 1, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE
, /* pc_relative */
786 complain_overflow_signed
, /* complain_on_overflow */
787 ppc64_elf_sectoff_reloc
, /* special_function */
788 "R_PPC64_SECTOFF_HI", /* name */
789 FALSE
, /* partial_inplace */
791 0xffff, /* dst_mask */
792 FALSE
), /* pcrel_offset */
794 /* 16-bit upper half adjusted section relative relocation. */
795 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
797 1, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE
, /* pc_relative */
801 complain_overflow_signed
, /* complain_on_overflow */
802 ppc64_elf_sectoff_ha_reloc
, /* special_function */
803 "R_PPC64_SECTOFF_HA", /* name */
804 FALSE
, /* partial_inplace */
806 0xffff, /* dst_mask */
807 FALSE
), /* pcrel_offset */
809 /* Like R_PPC64_REL24 without touching the two least significant bits. */
810 HOWTO (R_PPC64_REL30
, /* type */
812 2, /* size (0 = byte, 1 = short, 2 = long) */
814 TRUE
, /* pc_relative */
816 complain_overflow_dont
, /* complain_on_overflow */
817 bfd_elf_generic_reloc
, /* special_function */
818 "R_PPC64_REL30", /* name */
819 FALSE
, /* partial_inplace */
821 0xfffffffc, /* dst_mask */
822 TRUE
), /* pcrel_offset */
824 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
826 /* A standard 64-bit relocation. */
827 HOWTO (R_PPC64_ADDR64
, /* type */
829 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
831 FALSE
, /* pc_relative */
833 complain_overflow_dont
, /* complain_on_overflow */
834 bfd_elf_generic_reloc
, /* special_function */
835 "R_PPC64_ADDR64", /* name */
836 FALSE
, /* partial_inplace */
838 ONES (64), /* dst_mask */
839 FALSE
), /* pcrel_offset */
841 /* The bits 32-47 of an address. */
842 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE
, /* pc_relative */
848 complain_overflow_dont
, /* complain_on_overflow */
849 bfd_elf_generic_reloc
, /* special_function */
850 "R_PPC64_ADDR16_HIGHER", /* name */
851 FALSE
, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE
), /* pcrel_offset */
856 /* The bits 32-47 of an address, plus 1 if the contents of the low
857 16 bits, treated as a signed number, is negative. */
858 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
860 1, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE
, /* pc_relative */
864 complain_overflow_dont
, /* complain_on_overflow */
865 ppc64_elf_ha_reloc
, /* special_function */
866 "R_PPC64_ADDR16_HIGHERA", /* name */
867 FALSE
, /* partial_inplace */
869 0xffff, /* dst_mask */
870 FALSE
), /* pcrel_offset */
872 /* The bits 48-63 of an address. */
873 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE
, /* pc_relative */
879 complain_overflow_dont
, /* complain_on_overflow */
880 bfd_elf_generic_reloc
, /* special_function */
881 "R_PPC64_ADDR16_HIGHEST", /* name */
882 FALSE
, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE
), /* pcrel_offset */
887 /* The bits 48-63 of an address, plus 1 if the contents of the low
888 16 bits, treated as a signed number, is negative. */
889 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE
, /* pc_relative */
895 complain_overflow_dont
, /* complain_on_overflow */
896 ppc64_elf_ha_reloc
, /* special_function */
897 "R_PPC64_ADDR16_HIGHESTA", /* name */
898 FALSE
, /* partial_inplace */
900 0xffff, /* dst_mask */
901 FALSE
), /* pcrel_offset */
903 /* Like ADDR64, but may be unaligned. */
904 HOWTO (R_PPC64_UADDR64
, /* type */
906 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 FALSE
, /* pc_relative */
910 complain_overflow_dont
, /* complain_on_overflow */
911 bfd_elf_generic_reloc
, /* special_function */
912 "R_PPC64_UADDR64", /* name */
913 FALSE
, /* partial_inplace */
915 ONES (64), /* dst_mask */
916 FALSE
), /* pcrel_offset */
918 /* 64-bit relative relocation. */
919 HOWTO (R_PPC64_REL64
, /* type */
921 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
923 TRUE
, /* pc_relative */
925 complain_overflow_dont
, /* complain_on_overflow */
926 bfd_elf_generic_reloc
, /* special_function */
927 "R_PPC64_REL64", /* name */
928 FALSE
, /* partial_inplace */
930 ONES (64), /* dst_mask */
931 TRUE
), /* pcrel_offset */
933 /* 64-bit relocation to the symbol's procedure linkage table. */
934 HOWTO (R_PPC64_PLT64
, /* type */
936 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
, /* complain_on_overflow */
941 ppc64_elf_unhandled_reloc
, /* special_function */
942 "R_PPC64_PLT64", /* name */
943 FALSE
, /* partial_inplace */
945 ONES (64), /* dst_mask */
946 FALSE
), /* pcrel_offset */
948 /* 64-bit PC relative relocation to the symbol's procedure linkage
950 /* FIXME: R_PPC64_PLTREL64 not supported. */
951 HOWTO (R_PPC64_PLTREL64
, /* type */
953 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
955 TRUE
, /* pc_relative */
957 complain_overflow_dont
, /* complain_on_overflow */
958 ppc64_elf_unhandled_reloc
, /* special_function */
959 "R_PPC64_PLTREL64", /* name */
960 FALSE
, /* partial_inplace */
962 ONES (64), /* dst_mask */
963 TRUE
), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation. */
967 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
968 HOWTO (R_PPC64_TOC16
, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE
, /* pc_relative */
974 complain_overflow_signed
, /* complain_on_overflow */
975 ppc64_elf_toc_reloc
, /* special_function */
976 "R_PPC64_TOC16", /* name */
977 FALSE
, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE
), /* pcrel_offset */
982 /* 16 bit TOC-relative relocation without overflow. */
984 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
985 HOWTO (R_PPC64_TOC16_LO
, /* type */
987 1, /* size (0 = byte, 1 = short, 2 = long) */
989 FALSE
, /* pc_relative */
991 complain_overflow_dont
, /* complain_on_overflow */
992 ppc64_elf_toc_reloc
, /* special_function */
993 "R_PPC64_TOC16_LO", /* name */
994 FALSE
, /* partial_inplace */
996 0xffff, /* dst_mask */
997 FALSE
), /* pcrel_offset */
999 /* 16 bit TOC-relative relocation, high 16 bits. */
1001 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1002 HOWTO (R_PPC64_TOC16_HI
, /* type */
1003 16, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE
, /* pc_relative */
1008 complain_overflow_signed
, /* complain_on_overflow */
1009 ppc64_elf_toc_reloc
, /* special_function */
1010 "R_PPC64_TOC16_HI", /* name */
1011 FALSE
, /* partial_inplace */
1013 0xffff, /* dst_mask */
1014 FALSE
), /* pcrel_offset */
1016 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1017 contents of the low 16 bits, treated as a signed number, is
1020 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1021 HOWTO (R_PPC64_TOC16_HA
, /* type */
1022 16, /* rightshift */
1023 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 FALSE
, /* pc_relative */
1027 complain_overflow_signed
, /* complain_on_overflow */
1028 ppc64_elf_toc_ha_reloc
, /* special_function */
1029 "R_PPC64_TOC16_HA", /* name */
1030 FALSE
, /* partial_inplace */
1032 0xffff, /* dst_mask */
1033 FALSE
), /* pcrel_offset */
1035 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1037 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1038 HOWTO (R_PPC64_TOC
, /* type */
1040 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1042 FALSE
, /* pc_relative */
1044 complain_overflow_dont
, /* complain_on_overflow */
1045 ppc64_elf_toc64_reloc
, /* special_function */
1046 "R_PPC64_TOC", /* name */
1047 FALSE
, /* partial_inplace */
1049 ONES (64), /* dst_mask */
1050 FALSE
), /* pcrel_offset */
1052 /* Like R_PPC64_GOT16, but also informs the link editor that the
1053 value to relocate may (!) refer to a PLT entry which the link
1054 editor (a) may replace with the symbol value. If the link editor
1055 is unable to fully resolve the symbol, it may (b) create a PLT
1056 entry and store the address to the new PLT entry in the GOT.
1057 This permits lazy resolution of function symbols at run time.
1058 The link editor may also skip all of this and just (c) emit a
1059 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1060 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1061 HOWTO (R_PPC64_PLTGOT16
, /* type */
1063 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE
, /* pc_relative */
1067 complain_overflow_signed
, /* complain_on_overflow */
1068 ppc64_elf_unhandled_reloc
, /* special_function */
1069 "R_PPC64_PLTGOT16", /* name */
1070 FALSE
, /* partial_inplace */
1072 0xffff, /* dst_mask */
1073 FALSE
), /* pcrel_offset */
1075 /* Like R_PPC64_PLTGOT16, but without overflow. */
1076 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1077 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 FALSE
, /* pc_relative */
1083 complain_overflow_dont
, /* complain_on_overflow */
1084 ppc64_elf_unhandled_reloc
, /* special_function */
1085 "R_PPC64_PLTGOT16_LO", /* name */
1086 FALSE
, /* partial_inplace */
1088 0xffff, /* dst_mask */
1089 FALSE
), /* pcrel_offset */
1091 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1092 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1093 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1094 16, /* rightshift */
1095 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 FALSE
, /* pc_relative */
1099 complain_overflow_signed
, /* complain_on_overflow */
1100 ppc64_elf_unhandled_reloc
, /* special_function */
1101 "R_PPC64_PLTGOT16_HI", /* name */
1102 FALSE
, /* partial_inplace */
1104 0xffff, /* dst_mask */
1105 FALSE
), /* pcrel_offset */
1107 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1108 1 if the contents of the low 16 bits, treated as a signed number,
1110 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1111 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE
, /* pc_relative */
1117 complain_overflow_signed
, /* complain_on_overflow */
1118 ppc64_elf_unhandled_reloc
, /* special_function */
1119 "R_PPC64_PLTGOT16_HA", /* name */
1120 FALSE
, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE
), /* pcrel_offset */
1125 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1126 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_signed
, /* complain_on_overflow */
1133 bfd_elf_generic_reloc
, /* special_function */
1134 "R_PPC64_ADDR16_DS", /* name */
1135 FALSE
, /* partial_inplace */
1137 0xfffc, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1140 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1141 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE
, /* pc_relative */
1147 complain_overflow_dont
,/* complain_on_overflow */
1148 bfd_elf_generic_reloc
, /* special_function */
1149 "R_PPC64_ADDR16_LO_DS",/* name */
1150 FALSE
, /* partial_inplace */
1152 0xfffc, /* dst_mask */
1153 FALSE
), /* pcrel_offset */
1155 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1156 HOWTO (R_PPC64_GOT16_DS
, /* type */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE
, /* pc_relative */
1162 complain_overflow_signed
, /* complain_on_overflow */
1163 ppc64_elf_unhandled_reloc
, /* special_function */
1164 "R_PPC64_GOT16_DS", /* name */
1165 FALSE
, /* partial_inplace */
1167 0xfffc, /* dst_mask */
1168 FALSE
), /* pcrel_offset */
1170 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1171 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE
, /* pc_relative */
1177 complain_overflow_dont
, /* complain_on_overflow */
1178 ppc64_elf_unhandled_reloc
, /* special_function */
1179 "R_PPC64_GOT16_LO_DS", /* name */
1180 FALSE
, /* partial_inplace */
1182 0xfffc, /* dst_mask */
1183 FALSE
), /* pcrel_offset */
1185 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1186 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE
, /* pc_relative */
1192 complain_overflow_dont
, /* complain_on_overflow */
1193 ppc64_elf_unhandled_reloc
, /* special_function */
1194 "R_PPC64_PLT16_LO_DS", /* name */
1195 FALSE
, /* partial_inplace */
1197 0xfffc, /* dst_mask */
1198 FALSE
), /* pcrel_offset */
1200 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1201 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 FALSE
, /* pc_relative */
1207 complain_overflow_signed
, /* complain_on_overflow */
1208 ppc64_elf_sectoff_reloc
, /* special_function */
1209 "R_PPC64_SECTOFF_DS", /* name */
1210 FALSE
, /* partial_inplace */
1212 0xfffc, /* dst_mask */
1213 FALSE
), /* pcrel_offset */
1215 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1216 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE
, /* pc_relative */
1222 complain_overflow_dont
, /* complain_on_overflow */
1223 ppc64_elf_sectoff_reloc
, /* special_function */
1224 "R_PPC64_SECTOFF_LO_DS",/* name */
1225 FALSE
, /* partial_inplace */
1227 0xfffc, /* dst_mask */
1228 FALSE
), /* pcrel_offset */
1230 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1231 HOWTO (R_PPC64_TOC16_DS
, /* type */
1233 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 FALSE
, /* pc_relative */
1237 complain_overflow_signed
, /* complain_on_overflow */
1238 ppc64_elf_toc_reloc
, /* special_function */
1239 "R_PPC64_TOC16_DS", /* name */
1240 FALSE
, /* partial_inplace */
1242 0xfffc, /* dst_mask */
1243 FALSE
), /* pcrel_offset */
1245 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1246 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1250 FALSE
, /* pc_relative */
1252 complain_overflow_dont
, /* complain_on_overflow */
1253 ppc64_elf_toc_reloc
, /* special_function */
1254 "R_PPC64_TOC16_LO_DS", /* name */
1255 FALSE
, /* partial_inplace */
1257 0xfffc, /* dst_mask */
1258 FALSE
), /* pcrel_offset */
1260 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1261 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1262 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 FALSE
, /* pc_relative */
1268 complain_overflow_signed
, /* complain_on_overflow */
1269 ppc64_elf_unhandled_reloc
, /* special_function */
1270 "R_PPC64_PLTGOT16_DS", /* name */
1271 FALSE
, /* partial_inplace */
1273 0xfffc, /* dst_mask */
1274 FALSE
), /* pcrel_offset */
1276 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1277 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1278 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE
, /* pc_relative */
1284 complain_overflow_dont
, /* complain_on_overflow */
1285 ppc64_elf_unhandled_reloc
, /* special_function */
1286 "R_PPC64_PLTGOT16_LO_DS",/* name */
1287 FALSE
, /* partial_inplace */
1289 0xfffc, /* dst_mask */
1290 FALSE
), /* pcrel_offset */
1292 /* Marker relocs for TLS. */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE
, /* pc_relative */
1299 complain_overflow_dont
, /* complain_on_overflow */
1300 bfd_elf_generic_reloc
, /* special_function */
1301 "R_PPC64_TLS", /* name */
1302 FALSE
, /* partial_inplace */
1305 FALSE
), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSGD
,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE
, /* pc_relative */
1313 complain_overflow_dont
, /* complain_on_overflow */
1314 bfd_elf_generic_reloc
, /* special_function */
1315 "R_PPC64_TLSGD", /* name */
1316 FALSE
, /* partial_inplace */
1319 FALSE
), /* pcrel_offset */
1321 HOWTO (R_PPC64_TLSLD
,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE
, /* pc_relative */
1327 complain_overflow_dont
, /* complain_on_overflow */
1328 bfd_elf_generic_reloc
, /* special_function */
1329 "R_PPC64_TLSLD", /* name */
1330 FALSE
, /* partial_inplace */
1333 FALSE
), /* pcrel_offset */
1335 HOWTO (R_PPC64_TOCSAVE
,
1337 2, /* size (0 = byte, 1 = short, 2 = long) */
1339 FALSE
, /* pc_relative */
1341 complain_overflow_dont
, /* complain_on_overflow */
1342 bfd_elf_generic_reloc
, /* special_function */
1343 "R_PPC64_TOCSAVE", /* name */
1344 FALSE
, /* partial_inplace */
1347 FALSE
), /* pcrel_offset */
1349 /* Computes the load module index of the load module that contains the
1350 definition of its TLS sym. */
1351 HOWTO (R_PPC64_DTPMOD64
,
1353 4, /* size (0 = byte, 1 = short, 2 = long) */
1355 FALSE
, /* pc_relative */
1357 complain_overflow_dont
, /* complain_on_overflow */
1358 ppc64_elf_unhandled_reloc
, /* special_function */
1359 "R_PPC64_DTPMOD64", /* name */
1360 FALSE
, /* partial_inplace */
1362 ONES (64), /* dst_mask */
1363 FALSE
), /* pcrel_offset */
1365 /* Computes a dtv-relative displacement, the difference between the value
1366 of sym+add and the base address of the thread-local storage block that
1367 contains the definition of sym, minus 0x8000. */
1368 HOWTO (R_PPC64_DTPREL64
,
1370 4, /* size (0 = byte, 1 = short, 2 = long) */
1372 FALSE
, /* pc_relative */
1374 complain_overflow_dont
, /* complain_on_overflow */
1375 ppc64_elf_unhandled_reloc
, /* special_function */
1376 "R_PPC64_DTPREL64", /* name */
1377 FALSE
, /* partial_inplace */
1379 ONES (64), /* dst_mask */
1380 FALSE
), /* pcrel_offset */
1382 /* A 16 bit dtprel reloc. */
1383 HOWTO (R_PPC64_DTPREL16
,
1385 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 FALSE
, /* pc_relative */
1389 complain_overflow_signed
, /* complain_on_overflow */
1390 ppc64_elf_unhandled_reloc
, /* special_function */
1391 "R_PPC64_DTPREL16", /* name */
1392 FALSE
, /* partial_inplace */
1394 0xffff, /* dst_mask */
1395 FALSE
), /* pcrel_offset */
1397 /* Like DTPREL16, but no overflow. */
1398 HOWTO (R_PPC64_DTPREL16_LO
,
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 FALSE
, /* pc_relative */
1404 complain_overflow_dont
, /* complain_on_overflow */
1405 ppc64_elf_unhandled_reloc
, /* special_function */
1406 "R_PPC64_DTPREL16_LO", /* name */
1407 FALSE
, /* partial_inplace */
1409 0xffff, /* dst_mask */
1410 FALSE
), /* pcrel_offset */
1412 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1413 HOWTO (R_PPC64_DTPREL16_HI
,
1414 16, /* rightshift */
1415 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE
, /* pc_relative */
1419 complain_overflow_signed
, /* complain_on_overflow */
1420 ppc64_elf_unhandled_reloc
, /* special_function */
1421 "R_PPC64_DTPREL16_HI", /* name */
1422 FALSE
, /* partial_inplace */
1424 0xffff, /* dst_mask */
1425 FALSE
), /* pcrel_offset */
1427 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1428 HOWTO (R_PPC64_DTPREL16_HA
,
1429 16, /* rightshift */
1430 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_signed
, /* complain_on_overflow */
1435 ppc64_elf_unhandled_reloc
, /* special_function */
1436 "R_PPC64_DTPREL16_HA", /* name */
1437 FALSE
, /* partial_inplace */
1439 0xffff, /* dst_mask */
1440 FALSE
), /* pcrel_offset */
1442 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1443 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1444 32, /* rightshift */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 ppc64_elf_unhandled_reloc
, /* special_function */
1451 "R_PPC64_DTPREL16_HIGHER", /* name */
1452 FALSE
, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE
), /* pcrel_offset */
1457 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1458 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1459 32, /* rightshift */
1460 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 FALSE
, /* pc_relative */
1464 complain_overflow_dont
, /* complain_on_overflow */
1465 ppc64_elf_unhandled_reloc
, /* special_function */
1466 "R_PPC64_DTPREL16_HIGHERA", /* name */
1467 FALSE
, /* partial_inplace */
1469 0xffff, /* dst_mask */
1470 FALSE
), /* pcrel_offset */
1472 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1473 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1474 48, /* rightshift */
1475 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE
, /* pc_relative */
1479 complain_overflow_dont
, /* complain_on_overflow */
1480 ppc64_elf_unhandled_reloc
, /* special_function */
1481 "R_PPC64_DTPREL16_HIGHEST", /* name */
1482 FALSE
, /* partial_inplace */
1484 0xffff, /* dst_mask */
1485 FALSE
), /* pcrel_offset */
1487 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1488 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1489 48, /* rightshift */
1490 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 FALSE
, /* pc_relative */
1494 complain_overflow_dont
, /* complain_on_overflow */
1495 ppc64_elf_unhandled_reloc
, /* special_function */
1496 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1497 FALSE
, /* partial_inplace */
1499 0xffff, /* dst_mask */
1500 FALSE
), /* pcrel_offset */
1502 /* Like DTPREL16, but for insns with a DS field. */
1503 HOWTO (R_PPC64_DTPREL16_DS
,
1505 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE
, /* pc_relative */
1509 complain_overflow_signed
, /* complain_on_overflow */
1510 ppc64_elf_unhandled_reloc
, /* special_function */
1511 "R_PPC64_DTPREL16_DS", /* name */
1512 FALSE
, /* partial_inplace */
1514 0xfffc, /* dst_mask */
1515 FALSE
), /* pcrel_offset */
1517 /* Like DTPREL16_DS, but no overflow. */
1518 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1520 1, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE
, /* pc_relative */
1524 complain_overflow_dont
, /* complain_on_overflow */
1525 ppc64_elf_unhandled_reloc
, /* special_function */
1526 "R_PPC64_DTPREL16_LO_DS", /* name */
1527 FALSE
, /* partial_inplace */
1529 0xfffc, /* dst_mask */
1530 FALSE
), /* pcrel_offset */
1532 /* Computes a tp-relative displacement, the difference between the value of
1533 sym+add and the value of the thread pointer (r13). */
1534 HOWTO (R_PPC64_TPREL64
,
1536 4, /* size (0 = byte, 1 = short, 2 = long) */
1538 FALSE
, /* pc_relative */
1540 complain_overflow_dont
, /* complain_on_overflow */
1541 ppc64_elf_unhandled_reloc
, /* special_function */
1542 "R_PPC64_TPREL64", /* name */
1543 FALSE
, /* partial_inplace */
1545 ONES (64), /* dst_mask */
1546 FALSE
), /* pcrel_offset */
1548 /* A 16 bit tprel reloc. */
1549 HOWTO (R_PPC64_TPREL16
,
1551 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 FALSE
, /* pc_relative */
1555 complain_overflow_signed
, /* complain_on_overflow */
1556 ppc64_elf_unhandled_reloc
, /* special_function */
1557 "R_PPC64_TPREL16", /* name */
1558 FALSE
, /* partial_inplace */
1560 0xffff, /* dst_mask */
1561 FALSE
), /* pcrel_offset */
1563 /* Like TPREL16, but no overflow. */
1564 HOWTO (R_PPC64_TPREL16_LO
,
1566 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 FALSE
, /* pc_relative */
1570 complain_overflow_dont
, /* complain_on_overflow */
1571 ppc64_elf_unhandled_reloc
, /* special_function */
1572 "R_PPC64_TPREL16_LO", /* name */
1573 FALSE
, /* partial_inplace */
1575 0xffff, /* dst_mask */
1576 FALSE
), /* pcrel_offset */
1578 /* Like TPREL16_LO, but next higher group of 16 bits. */
1579 HOWTO (R_PPC64_TPREL16_HI
,
1580 16, /* rightshift */
1581 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 FALSE
, /* pc_relative */
1585 complain_overflow_signed
, /* complain_on_overflow */
1586 ppc64_elf_unhandled_reloc
, /* special_function */
1587 "R_PPC64_TPREL16_HI", /* name */
1588 FALSE
, /* partial_inplace */
1590 0xffff, /* dst_mask */
1591 FALSE
), /* pcrel_offset */
1593 /* Like TPREL16_HI, but adjust for low 16 bits. */
1594 HOWTO (R_PPC64_TPREL16_HA
,
1595 16, /* rightshift */
1596 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 FALSE
, /* pc_relative */
1600 complain_overflow_signed
, /* complain_on_overflow */
1601 ppc64_elf_unhandled_reloc
, /* special_function */
1602 "R_PPC64_TPREL16_HA", /* name */
1603 FALSE
, /* partial_inplace */
1605 0xffff, /* dst_mask */
1606 FALSE
), /* pcrel_offset */
1608 /* Like TPREL16_HI, but next higher group of 16 bits. */
1609 HOWTO (R_PPC64_TPREL16_HIGHER
,
1610 32, /* rightshift */
1611 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 FALSE
, /* pc_relative */
1615 complain_overflow_dont
, /* complain_on_overflow */
1616 ppc64_elf_unhandled_reloc
, /* special_function */
1617 "R_PPC64_TPREL16_HIGHER", /* name */
1618 FALSE
, /* partial_inplace */
1620 0xffff, /* dst_mask */
1621 FALSE
), /* pcrel_offset */
1623 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1624 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1625 32, /* rightshift */
1626 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE
, /* pc_relative */
1630 complain_overflow_dont
, /* complain_on_overflow */
1631 ppc64_elf_unhandled_reloc
, /* special_function */
1632 "R_PPC64_TPREL16_HIGHERA", /* name */
1633 FALSE
, /* partial_inplace */
1635 0xffff, /* dst_mask */
1636 FALSE
), /* pcrel_offset */
1638 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1639 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1640 48, /* rightshift */
1641 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE
, /* pc_relative */
1645 complain_overflow_dont
, /* complain_on_overflow */
1646 ppc64_elf_unhandled_reloc
, /* special_function */
1647 "R_PPC64_TPREL16_HIGHEST", /* name */
1648 FALSE
, /* partial_inplace */
1650 0xffff, /* dst_mask */
1651 FALSE
), /* pcrel_offset */
1653 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1654 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1655 48, /* rightshift */
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE
, /* pc_relative */
1660 complain_overflow_dont
, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc
, /* special_function */
1662 "R_PPC64_TPREL16_HIGHESTA", /* name */
1663 FALSE
, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE
), /* pcrel_offset */
1668 /* Like TPREL16, but for insns with a DS field. */
1669 HOWTO (R_PPC64_TPREL16_DS
,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE
, /* pc_relative */
1675 complain_overflow_signed
, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc
, /* special_function */
1677 "R_PPC64_TPREL16_DS", /* name */
1678 FALSE
, /* partial_inplace */
1680 0xfffc, /* dst_mask */
1681 FALSE
), /* pcrel_offset */
1683 /* Like TPREL16_DS, but no overflow. */
1684 HOWTO (R_PPC64_TPREL16_LO_DS
,
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE
, /* pc_relative */
1690 complain_overflow_dont
, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc
, /* special_function */
1692 "R_PPC64_TPREL16_LO_DS", /* name */
1693 FALSE
, /* partial_inplace */
1695 0xfffc, /* dst_mask */
1696 FALSE
), /* pcrel_offset */
1698 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1699 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1700 to the first entry relative to the TOC base (r2). */
1701 HOWTO (R_PPC64_GOT_TLSGD16
,
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 FALSE
, /* pc_relative */
1707 complain_overflow_signed
, /* complain_on_overflow */
1708 ppc64_elf_unhandled_reloc
, /* special_function */
1709 "R_PPC64_GOT_TLSGD16", /* name */
1710 FALSE
, /* partial_inplace */
1712 0xffff, /* dst_mask */
1713 FALSE
), /* pcrel_offset */
1715 /* Like GOT_TLSGD16, but no overflow. */
1716 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE
, /* pc_relative */
1722 complain_overflow_dont
, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc
, /* special_function */
1724 "R_PPC64_GOT_TLSGD16_LO", /* name */
1725 FALSE
, /* partial_inplace */
1727 0xffff, /* dst_mask */
1728 FALSE
), /* pcrel_offset */
1730 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1731 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1732 16, /* rightshift */
1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 FALSE
, /* pc_relative */
1737 complain_overflow_signed
, /* complain_on_overflow */
1738 ppc64_elf_unhandled_reloc
, /* special_function */
1739 "R_PPC64_GOT_TLSGD16_HI", /* name */
1740 FALSE
, /* partial_inplace */
1742 0xffff, /* dst_mask */
1743 FALSE
), /* pcrel_offset */
1745 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1746 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1750 FALSE
, /* pc_relative */
1752 complain_overflow_signed
, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc
, /* special_function */
1754 "R_PPC64_GOT_TLSGD16_HA", /* name */
1755 FALSE
, /* partial_inplace */
1757 0xffff, /* dst_mask */
1758 FALSE
), /* pcrel_offset */
1760 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1761 with values (sym+add)@dtpmod and zero, and computes the offset to the
1762 first entry relative to the TOC base (r2). */
1763 HOWTO (R_PPC64_GOT_TLSLD16
,
1765 1, /* size (0 = byte, 1 = short, 2 = long) */
1767 FALSE
, /* pc_relative */
1769 complain_overflow_signed
, /* complain_on_overflow */
1770 ppc64_elf_unhandled_reloc
, /* special_function */
1771 "R_PPC64_GOT_TLSLD16", /* name */
1772 FALSE
, /* partial_inplace */
1774 0xffff, /* dst_mask */
1775 FALSE
), /* pcrel_offset */
1777 /* Like GOT_TLSLD16, but no overflow. */
1778 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1780 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 FALSE
, /* pc_relative */
1784 complain_overflow_dont
, /* complain_on_overflow */
1785 ppc64_elf_unhandled_reloc
, /* special_function */
1786 "R_PPC64_GOT_TLSLD16_LO", /* name */
1787 FALSE
, /* partial_inplace */
1789 0xffff, /* dst_mask */
1790 FALSE
), /* pcrel_offset */
1792 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1793 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1794 16, /* rightshift */
1795 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 FALSE
, /* pc_relative */
1799 complain_overflow_signed
, /* complain_on_overflow */
1800 ppc64_elf_unhandled_reloc
, /* special_function */
1801 "R_PPC64_GOT_TLSLD16_HI", /* name */
1802 FALSE
, /* partial_inplace */
1804 0xffff, /* dst_mask */
1805 FALSE
), /* pcrel_offset */
1807 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1808 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1809 16, /* rightshift */
1810 1, /* size (0 = byte, 1 = short, 2 = long) */
1812 FALSE
, /* pc_relative */
1814 complain_overflow_signed
, /* complain_on_overflow */
1815 ppc64_elf_unhandled_reloc
, /* special_function */
1816 "R_PPC64_GOT_TLSLD16_HA", /* name */
1817 FALSE
, /* partial_inplace */
1819 0xffff, /* dst_mask */
1820 FALSE
), /* pcrel_offset */
1822 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1823 the offset to the entry relative to the TOC base (r2). */
1824 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1826 1, /* size (0 = byte, 1 = short, 2 = long) */
1828 FALSE
, /* pc_relative */
1830 complain_overflow_signed
, /* complain_on_overflow */
1831 ppc64_elf_unhandled_reloc
, /* special_function */
1832 "R_PPC64_GOT_DTPREL16_DS", /* name */
1833 FALSE
, /* partial_inplace */
1835 0xfffc, /* dst_mask */
1836 FALSE
), /* pcrel_offset */
1838 /* Like GOT_DTPREL16_DS, but no overflow. */
1839 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1841 1, /* size (0 = byte, 1 = short, 2 = long) */
1843 FALSE
, /* pc_relative */
1845 complain_overflow_dont
, /* complain_on_overflow */
1846 ppc64_elf_unhandled_reloc
, /* special_function */
1847 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1848 FALSE
, /* partial_inplace */
1850 0xfffc, /* dst_mask */
1851 FALSE
), /* pcrel_offset */
1853 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1854 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1855 16, /* rightshift */
1856 1, /* size (0 = byte, 1 = short, 2 = long) */
1858 FALSE
, /* pc_relative */
1860 complain_overflow_signed
, /* complain_on_overflow */
1861 ppc64_elf_unhandled_reloc
, /* special_function */
1862 "R_PPC64_GOT_DTPREL16_HI", /* name */
1863 FALSE
, /* partial_inplace */
1865 0xffff, /* dst_mask */
1866 FALSE
), /* pcrel_offset */
1868 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1869 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1870 16, /* rightshift */
1871 1, /* size (0 = byte, 1 = short, 2 = long) */
1873 FALSE
, /* pc_relative */
1875 complain_overflow_signed
, /* complain_on_overflow */
1876 ppc64_elf_unhandled_reloc
, /* special_function */
1877 "R_PPC64_GOT_DTPREL16_HA", /* name */
1878 FALSE
, /* partial_inplace */
1880 0xffff, /* dst_mask */
1881 FALSE
), /* pcrel_offset */
1883 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1884 offset to the entry relative to the TOC base (r2). */
1885 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1887 1, /* size (0 = byte, 1 = short, 2 = long) */
1889 FALSE
, /* pc_relative */
1891 complain_overflow_signed
, /* complain_on_overflow */
1892 ppc64_elf_unhandled_reloc
, /* special_function */
1893 "R_PPC64_GOT_TPREL16_DS", /* name */
1894 FALSE
, /* partial_inplace */
1896 0xfffc, /* dst_mask */
1897 FALSE
), /* pcrel_offset */
1899 /* Like GOT_TPREL16_DS, but no overflow. */
1900 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1902 1, /* size (0 = byte, 1 = short, 2 = long) */
1904 FALSE
, /* pc_relative */
1906 complain_overflow_dont
, /* complain_on_overflow */
1907 ppc64_elf_unhandled_reloc
, /* special_function */
1908 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1909 FALSE
, /* partial_inplace */
1911 0xfffc, /* dst_mask */
1912 FALSE
), /* pcrel_offset */
1914 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1915 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1916 16, /* rightshift */
1917 1, /* size (0 = byte, 1 = short, 2 = long) */
1919 FALSE
, /* pc_relative */
1921 complain_overflow_signed
, /* complain_on_overflow */
1922 ppc64_elf_unhandled_reloc
, /* special_function */
1923 "R_PPC64_GOT_TPREL16_HI", /* name */
1924 FALSE
, /* partial_inplace */
1926 0xffff, /* dst_mask */
1927 FALSE
), /* pcrel_offset */
1929 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1930 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1931 16, /* rightshift */
1932 1, /* size (0 = byte, 1 = short, 2 = long) */
1934 FALSE
, /* pc_relative */
1936 complain_overflow_signed
, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc
, /* special_function */
1938 "R_PPC64_GOT_TPREL16_HA", /* name */
1939 FALSE
, /* partial_inplace */
1941 0xffff, /* dst_mask */
1942 FALSE
), /* pcrel_offset */
1944 HOWTO (R_PPC64_JMP_IREL
, /* type */
1946 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE
, /* pc_relative */
1950 complain_overflow_dont
, /* complain_on_overflow */
1951 ppc64_elf_unhandled_reloc
, /* special_function */
1952 "R_PPC64_JMP_IREL", /* name */
1953 FALSE
, /* partial_inplace */
1956 FALSE
), /* pcrel_offset */
1958 HOWTO (R_PPC64_IRELATIVE
, /* type */
1960 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1962 FALSE
, /* pc_relative */
1964 complain_overflow_dont
, /* complain_on_overflow */
1965 bfd_elf_generic_reloc
, /* special_function */
1966 "R_PPC64_IRELATIVE", /* name */
1967 FALSE
, /* partial_inplace */
1969 ONES (64), /* dst_mask */
1970 FALSE
), /* pcrel_offset */
1972 /* A 16 bit relative relocation. */
1973 HOWTO (R_PPC64_REL16
, /* type */
1975 1, /* size (0 = byte, 1 = short, 2 = long) */
1977 TRUE
, /* pc_relative */
1979 complain_overflow_signed
, /* complain_on_overflow */
1980 bfd_elf_generic_reloc
, /* special_function */
1981 "R_PPC64_REL16", /* name */
1982 FALSE
, /* partial_inplace */
1984 0xffff, /* dst_mask */
1985 TRUE
), /* pcrel_offset */
1987 /* A 16 bit relative relocation without overflow. */
1988 HOWTO (R_PPC64_REL16_LO
, /* type */
1990 1, /* size (0 = byte, 1 = short, 2 = long) */
1992 TRUE
, /* pc_relative */
1994 complain_overflow_dont
,/* complain_on_overflow */
1995 bfd_elf_generic_reloc
, /* special_function */
1996 "R_PPC64_REL16_LO", /* name */
1997 FALSE
, /* partial_inplace */
1999 0xffff, /* dst_mask */
2000 TRUE
), /* pcrel_offset */
2002 /* The high order 16 bits of a relative address. */
2003 HOWTO (R_PPC64_REL16_HI
, /* type */
2004 16, /* rightshift */
2005 1, /* size (0 = byte, 1 = short, 2 = long) */
2007 TRUE
, /* pc_relative */
2009 complain_overflow_signed
, /* complain_on_overflow */
2010 bfd_elf_generic_reloc
, /* special_function */
2011 "R_PPC64_REL16_HI", /* name */
2012 FALSE
, /* partial_inplace */
2014 0xffff, /* dst_mask */
2015 TRUE
), /* pcrel_offset */
2017 /* The high order 16 bits of a relative address, plus 1 if the contents of
2018 the low 16 bits, treated as a signed number, is negative. */
2019 HOWTO (R_PPC64_REL16_HA
, /* type */
2020 16, /* rightshift */
2021 1, /* size (0 = byte, 1 = short, 2 = long) */
2023 TRUE
, /* pc_relative */
2025 complain_overflow_signed
, /* complain_on_overflow */
2026 ppc64_elf_ha_reloc
, /* special_function */
2027 "R_PPC64_REL16_HA", /* name */
2028 FALSE
, /* partial_inplace */
2030 0xffff, /* dst_mask */
2031 TRUE
), /* pcrel_offset */
2033 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2034 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2035 16, /* rightshift */
2036 2, /* size (0 = byte, 1 = short, 2 = long) */
2038 TRUE
, /* pc_relative */
2040 complain_overflow_signed
, /* complain_on_overflow */
2041 ppc64_elf_ha_reloc
, /* special_function */
2042 "R_PPC64_REL16DX_HA", /* name */
2043 FALSE
, /* partial_inplace */
2045 0x1fffc1, /* dst_mask */
2046 TRUE
), /* pcrel_offset */
2048 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2049 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2050 16, /* rightshift */
2051 1, /* size (0 = byte, 1 = short, 2 = long) */
2053 FALSE
, /* pc_relative */
2055 complain_overflow_dont
, /* complain_on_overflow */
2056 bfd_elf_generic_reloc
, /* special_function */
2057 "R_PPC64_ADDR16_HIGH", /* name */
2058 FALSE
, /* partial_inplace */
2060 0xffff, /* dst_mask */
2061 FALSE
), /* pcrel_offset */
2063 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2064 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2065 16, /* rightshift */
2066 1, /* size (0 = byte, 1 = short, 2 = long) */
2068 FALSE
, /* pc_relative */
2070 complain_overflow_dont
, /* complain_on_overflow */
2071 ppc64_elf_ha_reloc
, /* special_function */
2072 "R_PPC64_ADDR16_HIGHA", /* name */
2073 FALSE
, /* partial_inplace */
2075 0xffff, /* dst_mask */
2076 FALSE
), /* pcrel_offset */
2078 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2079 HOWTO (R_PPC64_DTPREL16_HIGH
,
2080 16, /* rightshift */
2081 1, /* size (0 = byte, 1 = short, 2 = long) */
2083 FALSE
, /* pc_relative */
2085 complain_overflow_dont
, /* complain_on_overflow */
2086 ppc64_elf_unhandled_reloc
, /* special_function */
2087 "R_PPC64_DTPREL16_HIGH", /* name */
2088 FALSE
, /* partial_inplace */
2090 0xffff, /* dst_mask */
2091 FALSE
), /* pcrel_offset */
2093 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2094 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2095 16, /* rightshift */
2096 1, /* size (0 = byte, 1 = short, 2 = long) */
2098 FALSE
, /* pc_relative */
2100 complain_overflow_dont
, /* complain_on_overflow */
2101 ppc64_elf_unhandled_reloc
, /* special_function */
2102 "R_PPC64_DTPREL16_HIGHA", /* name */
2103 FALSE
, /* partial_inplace */
2105 0xffff, /* dst_mask */
2106 FALSE
), /* pcrel_offset */
2108 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2109 HOWTO (R_PPC64_TPREL16_HIGH
,
2110 16, /* rightshift */
2111 1, /* size (0 = byte, 1 = short, 2 = long) */
2113 FALSE
, /* pc_relative */
2115 complain_overflow_dont
, /* complain_on_overflow */
2116 ppc64_elf_unhandled_reloc
, /* special_function */
2117 "R_PPC64_TPREL16_HIGH", /* name */
2118 FALSE
, /* partial_inplace */
2120 0xffff, /* dst_mask */
2121 FALSE
), /* pcrel_offset */
2123 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2124 HOWTO (R_PPC64_TPREL16_HIGHA
,
2125 16, /* rightshift */
2126 1, /* size (0 = byte, 1 = short, 2 = long) */
2128 FALSE
, /* pc_relative */
2130 complain_overflow_dont
, /* complain_on_overflow */
2131 ppc64_elf_unhandled_reloc
, /* special_function */
2132 "R_PPC64_TPREL16_HIGHA", /* name */
2133 FALSE
, /* partial_inplace */
2135 0xffff, /* dst_mask */
2136 FALSE
), /* pcrel_offset */
2138 /* Marker reloc on ELFv2 large-model function entry. */
2139 HOWTO (R_PPC64_ENTRY
,
2141 2, /* size (0 = byte, 1 = short, 2 = long) */
2143 FALSE
, /* pc_relative */
2145 complain_overflow_dont
, /* complain_on_overflow */
2146 bfd_elf_generic_reloc
, /* special_function */
2147 "R_PPC64_ENTRY", /* name */
2148 FALSE
, /* partial_inplace */
2151 FALSE
), /* pcrel_offset */
2153 /* Like ADDR64, but use local entry point of function. */
2154 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2156 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2158 FALSE
, /* pc_relative */
2160 complain_overflow_dont
, /* complain_on_overflow */
2161 bfd_elf_generic_reloc
, /* special_function */
2162 "R_PPC64_ADDR64_LOCAL", /* name */
2163 FALSE
, /* partial_inplace */
2165 ONES (64), /* dst_mask */
2166 FALSE
), /* pcrel_offset */
2168 /* GNU extension to record C++ vtable hierarchy. */
2169 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2171 0, /* size (0 = byte, 1 = short, 2 = long) */
2173 FALSE
, /* pc_relative */
2175 complain_overflow_dont
, /* complain_on_overflow */
2176 NULL
, /* special_function */
2177 "R_PPC64_GNU_VTINHERIT", /* name */
2178 FALSE
, /* partial_inplace */
2181 FALSE
), /* pcrel_offset */
2183 /* GNU extension to record C++ vtable member usage. */
2184 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2186 0, /* size (0 = byte, 1 = short, 2 = long) */
2188 FALSE
, /* pc_relative */
2190 complain_overflow_dont
, /* complain_on_overflow */
2191 NULL
, /* special_function */
2192 "R_PPC64_GNU_VTENTRY", /* name */
2193 FALSE
, /* partial_inplace */
2196 FALSE
), /* pcrel_offset */
2200 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2204 ppc_howto_init (void)
2206 unsigned int i
, type
;
2208 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2210 type
= ppc64_elf_howto_raw
[i
].type
;
2211 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2212 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2216 static reloc_howto_type
*
2217 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2218 bfd_reloc_code_real_type code
)
2220 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2222 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2223 /* Initialize howto table if needed. */
2231 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2233 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2235 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2237 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2239 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2241 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2243 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2245 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2247 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2249 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2251 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2253 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2255 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2257 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2259 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2261 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2263 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2265 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2267 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2269 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2271 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2273 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2275 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2277 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2279 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2281 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2283 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2285 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2287 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2289 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2291 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2293 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2295 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2297 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2299 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2301 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2303 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2305 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2307 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2309 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2311 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2313 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2315 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2317 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2319 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2321 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2323 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2325 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2327 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2329 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2331 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2333 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2335 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2337 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2339 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2341 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2343 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2345 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2347 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2349 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2351 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2353 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2355 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2357 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2359 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2361 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2363 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2365 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2367 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2369 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2371 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2373 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2375 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2377 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2379 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2383 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2385 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2387 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2389 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2393 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2395 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2397 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2401 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2403 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2405 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2407 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2409 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2411 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2413 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2417 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2419 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2421 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2423 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2429 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2431 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2433 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2435 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2441 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2443 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2445 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2447 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2449 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2451 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2453 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2455 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2457 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2459 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2461 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2465 return ppc64_elf_howto_table
[r
];
2468 static reloc_howto_type
*
2469 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2474 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2475 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2476 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2477 return &ppc64_elf_howto_raw
[i
];
2482 /* Set the howto pointer for a PowerPC ELF reloc. */
2485 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2486 Elf_Internal_Rela
*dst
)
2490 /* Initialize howto table if needed. */
2491 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2494 type
= ELF64_R_TYPE (dst
->r_info
);
2495 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2497 /* xgettext:c-format */
2498 _bfd_error_handler (_("%B: invalid relocation type %d"),
2500 type
= R_PPC64_NONE
;
2502 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2505 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2507 static bfd_reloc_status_type
2508 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2509 void *data
, asection
*input_section
,
2510 bfd
*output_bfd
, char **error_message
)
2512 enum elf_ppc64_reloc_type r_type
;
2514 bfd_size_type octets
;
2517 /* If this is a relocatable link (output_bfd test tells us), just
2518 call the generic function. Any adjustment will be done at final
2520 if (output_bfd
!= NULL
)
2521 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2522 input_section
, output_bfd
, error_message
);
2524 /* Adjust the addend for sign extension of the low 16 bits.
2525 We won't actually be using the low 16 bits, so trashing them
2527 reloc_entry
->addend
+= 0x8000;
2528 r_type
= reloc_entry
->howto
->type
;
2529 if (r_type
!= R_PPC64_REL16DX_HA
)
2530 return bfd_reloc_continue
;
2533 if (!bfd_is_com_section (symbol
->section
))
2534 value
= symbol
->value
;
2535 value
+= (reloc_entry
->addend
2536 + symbol
->section
->output_offset
2537 + symbol
->section
->output_section
->vma
);
2538 value
-= (reloc_entry
->address
2539 + input_section
->output_offset
2540 + input_section
->output_section
->vma
);
2541 value
= (bfd_signed_vma
) value
>> 16;
2543 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2544 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2546 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2547 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2548 if (value
+ 0x8000 > 0xffff)
2549 return bfd_reloc_overflow
;
2550 return bfd_reloc_ok
;
2553 static bfd_reloc_status_type
2554 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2555 void *data
, asection
*input_section
,
2556 bfd
*output_bfd
, char **error_message
)
2558 if (output_bfd
!= NULL
)
2559 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2560 input_section
, output_bfd
, error_message
);
2562 if (strcmp (symbol
->section
->name
, ".opd") == 0
2563 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2565 bfd_vma dest
= opd_entry_value (symbol
->section
,
2566 symbol
->value
+ reloc_entry
->addend
,
2568 if (dest
!= (bfd_vma
) -1)
2569 reloc_entry
->addend
= dest
- (symbol
->value
2570 + symbol
->section
->output_section
->vma
2571 + symbol
->section
->output_offset
);
2575 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2577 if (symbol
->section
->owner
!= abfd
2578 && symbol
->section
->owner
!= NULL
2579 && abiversion (symbol
->section
->owner
) >= 2)
2583 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2585 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2587 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2589 elfsym
= (elf_symbol_type
*) symdef
;
2595 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2597 return bfd_reloc_continue
;
2600 static bfd_reloc_status_type
2601 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2602 void *data
, asection
*input_section
,
2603 bfd
*output_bfd
, char **error_message
)
2606 enum elf_ppc64_reloc_type r_type
;
2607 bfd_size_type octets
;
2608 /* Assume 'at' branch hints. */
2609 bfd_boolean is_isa_v2
= TRUE
;
2611 /* If this is a relocatable link (output_bfd test tells us), just
2612 call the generic function. Any adjustment will be done at final
2614 if (output_bfd
!= NULL
)
2615 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2616 input_section
, output_bfd
, error_message
);
2618 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2619 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2620 insn
&= ~(0x01 << 21);
2621 r_type
= reloc_entry
->howto
->type
;
2622 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2623 || r_type
== R_PPC64_REL14_BRTAKEN
)
2624 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2628 /* Set 'a' bit. This is 0b00010 in BO field for branch
2629 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2630 for branch on CTR insns (BO == 1a00t or 1a01t). */
2631 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2633 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2643 if (!bfd_is_com_section (symbol
->section
))
2644 target
= symbol
->value
;
2645 target
+= symbol
->section
->output_section
->vma
;
2646 target
+= symbol
->section
->output_offset
;
2647 target
+= reloc_entry
->addend
;
2649 from
= (reloc_entry
->address
2650 + input_section
->output_offset
2651 + input_section
->output_section
->vma
);
2653 /* Invert 'y' bit if not the default. */
2654 if ((bfd_signed_vma
) (target
- from
) < 0)
2657 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2659 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2660 input_section
, output_bfd
, error_message
);
2663 static bfd_reloc_status_type
2664 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2665 void *data
, asection
*input_section
,
2666 bfd
*output_bfd
, char **error_message
)
2668 /* If this is a relocatable link (output_bfd test tells us), just
2669 call the generic function. Any adjustment will be done at final
2671 if (output_bfd
!= NULL
)
2672 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2673 input_section
, output_bfd
, error_message
);
2675 /* Subtract the symbol section base address. */
2676 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2677 return bfd_reloc_continue
;
2680 static bfd_reloc_status_type
2681 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2682 void *data
, asection
*input_section
,
2683 bfd
*output_bfd
, char **error_message
)
2685 /* If this is a relocatable link (output_bfd test tells us), just
2686 call the generic function. Any adjustment will be done at final
2688 if (output_bfd
!= NULL
)
2689 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2690 input_section
, output_bfd
, error_message
);
2692 /* Subtract the symbol section base address. */
2693 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2695 /* Adjust the addend for sign extension of the low 16 bits. */
2696 reloc_entry
->addend
+= 0x8000;
2697 return bfd_reloc_continue
;
2700 static bfd_reloc_status_type
2701 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2702 void *data
, asection
*input_section
,
2703 bfd
*output_bfd
, char **error_message
)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd
!= NULL
)
2711 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2712 input_section
, output_bfd
, error_message
);
2714 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2716 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2718 /* Subtract the TOC base address. */
2719 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2720 return bfd_reloc_continue
;
2723 static bfd_reloc_status_type
2724 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2725 void *data
, asection
*input_section
,
2726 bfd
*output_bfd
, char **error_message
)
2730 /* If this is a relocatable link (output_bfd test tells us), just
2731 call the generic function. Any adjustment will be done at final
2733 if (output_bfd
!= NULL
)
2734 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2735 input_section
, output_bfd
, error_message
);
2737 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2739 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2741 /* Subtract the TOC base address. */
2742 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2744 /* Adjust the addend for sign extension of the low 16 bits. */
2745 reloc_entry
->addend
+= 0x8000;
2746 return bfd_reloc_continue
;
2749 static bfd_reloc_status_type
2750 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2751 void *data
, asection
*input_section
,
2752 bfd
*output_bfd
, char **error_message
)
2755 bfd_size_type octets
;
2757 /* If this is a relocatable link (output_bfd test tells us), just
2758 call the generic function. Any adjustment will be done at final
2760 if (output_bfd
!= NULL
)
2761 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2762 input_section
, output_bfd
, error_message
);
2764 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2766 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2768 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2769 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2770 return bfd_reloc_ok
;
2773 static bfd_reloc_status_type
2774 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2775 void *data
, asection
*input_section
,
2776 bfd
*output_bfd
, char **error_message
)
2778 /* If this is a relocatable link (output_bfd test tells us), just
2779 call the generic function. Any adjustment will be done at final
2781 if (output_bfd
!= NULL
)
2782 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2783 input_section
, output_bfd
, error_message
);
2785 if (error_message
!= NULL
)
2787 static char buf
[60];
2788 sprintf (buf
, "generic linker can't handle %s",
2789 reloc_entry
->howto
->name
);
2790 *error_message
= buf
;
2792 return bfd_reloc_dangerous
;
2795 /* Track GOT entries needed for a given symbol. We might need more
2796 than one got entry per symbol. */
2799 struct got_entry
*next
;
2801 /* The symbol addend that we'll be placing in the GOT. */
2804 /* Unlike other ELF targets, we use separate GOT entries for the same
2805 symbol referenced from different input files. This is to support
2806 automatic multiple TOC/GOT sections, where the TOC base can vary
2807 from one input file to another. After partitioning into TOC groups
2808 we merge entries within the group.
2810 Point to the BFD owning this GOT entry. */
2813 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2814 TLS_TPREL or TLS_DTPREL for tls entries. */
2815 unsigned char tls_type
;
2817 /* Non-zero if got.ent points to real entry. */
2818 unsigned char is_indirect
;
2820 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2823 bfd_signed_vma refcount
;
2825 struct got_entry
*ent
;
2829 /* The same for PLT. */
2832 struct plt_entry
*next
;
2838 bfd_signed_vma refcount
;
2843 struct ppc64_elf_obj_tdata
2845 struct elf_obj_tdata elf
;
2847 /* Shortcuts to dynamic linker sections. */
2851 /* Used during garbage collection. We attach global symbols defined
2852 on removed .opd entries to this section so that the sym is removed. */
2853 asection
*deleted_section
;
2855 /* TLS local dynamic got entry handling. Support for multiple GOT
2856 sections means we potentially need one of these for each input bfd. */
2857 struct got_entry tlsld_got
;
2860 /* A copy of relocs before they are modified for --emit-relocs. */
2861 Elf_Internal_Rela
*relocs
;
2863 /* Section contents. */
2867 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2868 the reloc to be in the range -32768 to 32767. */
2869 unsigned int has_small_toc_reloc
: 1;
2871 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2872 instruction not one we handle. */
2873 unsigned int unexpected_toc_insn
: 1;
2876 #define ppc64_elf_tdata(bfd) \
2877 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2879 #define ppc64_tlsld_got(bfd) \
2880 (&ppc64_elf_tdata (bfd)->tlsld_got)
2882 #define is_ppc64_elf(bfd) \
2883 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2884 && elf_object_id (bfd) == PPC64_ELF_DATA)
2886 /* Override the generic function because we store some extras. */
2889 ppc64_elf_mkobject (bfd
*abfd
)
2891 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2895 /* Fix bad default arch selected for a 64 bit input bfd when the
2896 default is 32 bit. Also select arch based on apuinfo. */
2899 ppc64_elf_object_p (bfd
*abfd
)
2901 if (!abfd
->arch_info
->the_default
)
2904 if (abfd
->arch_info
->bits_per_word
== 32)
2906 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2908 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2910 /* Relies on arch after 32 bit default being 64 bit default. */
2911 abfd
->arch_info
= abfd
->arch_info
->next
;
2912 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2915 return _bfd_elf_ppc_set_arch (abfd
);
2918 /* Support for core dump NOTE sections. */
2921 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2923 size_t offset
, size
;
2925 if (note
->descsz
!= 504)
2929 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2932 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2938 /* Make a ".reg/999" section. */
2939 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2940 size
, note
->descpos
+ offset
);
2944 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2946 if (note
->descsz
!= 136)
2949 elf_tdata (abfd
)->core
->pid
2950 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2951 elf_tdata (abfd
)->core
->program
2952 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2953 elf_tdata (abfd
)->core
->command
2954 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2960 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2973 va_start (ap
, note_type
);
2974 memset (data
, 0, sizeof (data
));
2975 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2976 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2978 return elfcore_write_note (abfd
, buf
, bufsiz
,
2979 "CORE", note_type
, data
, sizeof (data
));
2990 va_start (ap
, note_type
);
2991 memset (data
, 0, 112);
2992 pid
= va_arg (ap
, long);
2993 bfd_put_32 (abfd
, pid
, data
+ 32);
2994 cursig
= va_arg (ap
, int);
2995 bfd_put_16 (abfd
, cursig
, data
+ 12);
2996 greg
= va_arg (ap
, const void *);
2997 memcpy (data
+ 112, greg
, 384);
2998 memset (data
+ 496, 0, 8);
3000 return elfcore_write_note (abfd
, buf
, bufsiz
,
3001 "CORE", note_type
, data
, sizeof (data
));
3006 /* Add extra PPC sections. */
3008 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3010 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3011 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3012 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3013 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3014 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3015 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3016 { NULL
, 0, 0, 0, 0 }
3019 enum _ppc64_sec_type
{
3025 struct _ppc64_elf_section_data
3027 struct bfd_elf_section_data elf
;
3031 /* An array with one entry for each opd function descriptor,
3032 and some spares since opd entries may be either 16 or 24 bytes. */
3033 #define OPD_NDX(OFF) ((OFF) >> 4)
3034 struct _opd_sec_data
3036 /* Points to the function code section for local opd entries. */
3037 asection
**func_sec
;
3039 /* After editing .opd, adjust references to opd local syms. */
3043 /* An array for toc sections, indexed by offset/8. */
3044 struct _toc_sec_data
3046 /* Specifies the relocation symbol index used at a given toc offset. */
3049 /* And the relocation addend. */
3054 enum _ppc64_sec_type sec_type
:2;
3056 /* Flag set when small branches are detected. Used to
3057 select suitable defaults for the stub group size. */
3058 unsigned int has_14bit_branch
:1;
3061 #define ppc64_elf_section_data(sec) \
3062 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3065 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3067 if (!sec
->used_by_bfd
)
3069 struct _ppc64_elf_section_data
*sdata
;
3070 bfd_size_type amt
= sizeof (*sdata
);
3072 sdata
= bfd_zalloc (abfd
, amt
);
3075 sec
->used_by_bfd
= sdata
;
3078 return _bfd_elf_new_section_hook (abfd
, sec
);
3081 static struct _opd_sec_data
*
3082 get_opd_info (asection
* sec
)
3085 && ppc64_elf_section_data (sec
) != NULL
3086 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3087 return &ppc64_elf_section_data (sec
)->u
.opd
;
3091 /* Parameters for the qsort hook. */
3092 static bfd_boolean synthetic_relocatable
;
3093 static asection
*synthetic_opd
;
3095 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3098 compare_symbols (const void *ap
, const void *bp
)
3100 const asymbol
*a
= * (const asymbol
**) ap
;
3101 const asymbol
*b
= * (const asymbol
**) bp
;
3103 /* Section symbols first. */
3104 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3106 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3109 /* then .opd symbols. */
3110 if (synthetic_opd
!= NULL
)
3112 if (strcmp (a
->section
->name
, ".opd") == 0
3113 && strcmp (b
->section
->name
, ".opd") != 0)
3115 if (strcmp (a
->section
->name
, ".opd") != 0
3116 && strcmp (b
->section
->name
, ".opd") == 0)
3120 /* then other code symbols. */
3121 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3122 == (SEC_CODE
| SEC_ALLOC
)
3123 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3124 != (SEC_CODE
| SEC_ALLOC
))
3127 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3128 != (SEC_CODE
| SEC_ALLOC
)
3129 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3130 == (SEC_CODE
| SEC_ALLOC
))
3133 if (synthetic_relocatable
)
3135 if (a
->section
->id
< b
->section
->id
)
3138 if (a
->section
->id
> b
->section
->id
)
3142 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3145 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3148 /* For syms with the same value, prefer strong dynamic global function
3149 syms over other syms. */
3150 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3153 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3156 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3159 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3162 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3165 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3168 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3171 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3177 /* Search SYMS for a symbol of the given VALUE. */
3180 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3184 if (id
== (unsigned) -1)
3188 mid
= (lo
+ hi
) >> 1;
3189 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3191 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3201 mid
= (lo
+ hi
) >> 1;
3202 if (syms
[mid
]->section
->id
< id
)
3204 else if (syms
[mid
]->section
->id
> id
)
3206 else if (syms
[mid
]->value
< value
)
3208 else if (syms
[mid
]->value
> value
)
3218 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3220 bfd_vma vma
= *(bfd_vma
*) ptr
;
3221 return ((section
->flags
& SEC_ALLOC
) != 0
3222 && section
->vma
<= vma
3223 && vma
< section
->vma
+ section
->size
);
3226 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3227 entry syms. Also generate @plt symbols for the glink branch table.
3228 Returns count of synthetic symbols in RET or -1 on error. */
3231 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3232 long static_count
, asymbol
**static_syms
,
3233 long dyn_count
, asymbol
**dyn_syms
,
3240 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3241 asection
*opd
= NULL
;
3242 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3244 int abi
= abiversion (abfd
);
3250 opd
= bfd_get_section_by_name (abfd
, ".opd");
3251 if (opd
== NULL
&& abi
== 1)
3255 symcount
= static_count
;
3257 symcount
+= dyn_count
;
3261 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3265 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3267 /* Use both symbol tables. */
3268 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3269 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3271 else if (!relocatable
&& static_count
== 0)
3272 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3274 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3276 synthetic_relocatable
= relocatable
;
3277 synthetic_opd
= opd
;
3278 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3280 if (!relocatable
&& symcount
> 1)
3283 /* Trim duplicate syms, since we may have merged the normal and
3284 dynamic symbols. Actually, we only care about syms that have
3285 different values, so trim any with the same value. */
3286 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3287 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3288 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3289 syms
[j
++] = syms
[i
];
3294 /* Note that here and in compare_symbols we can't compare opd and
3295 sym->section directly. With separate debug info files, the
3296 symbols will be extracted from the debug file while abfd passed
3297 to this function is the real binary. */
3298 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3302 for (; i
< symcount
; ++i
)
3303 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3304 != (SEC_CODE
| SEC_ALLOC
))
3305 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3309 for (; i
< symcount
; ++i
)
3310 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3315 for (; i
< symcount
; ++i
)
3316 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3320 for (; i
< symcount
; ++i
)
3321 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3322 != (SEC_CODE
| SEC_ALLOC
))
3330 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3335 if (opdsymend
== secsymend
)
3338 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3339 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3343 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3350 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3354 while (r
< opd
->relocation
+ relcount
3355 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3358 if (r
== opd
->relocation
+ relcount
)
3361 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3364 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3367 sym
= *r
->sym_ptr_ptr
;
3368 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3369 sym
->section
->id
, sym
->value
+ r
->addend
))
3372 size
+= sizeof (asymbol
);
3373 size
+= strlen (syms
[i
]->name
) + 2;
3379 s
= *ret
= bfd_malloc (size
);
3386 names
= (char *) (s
+ count
);
3388 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3392 while (r
< opd
->relocation
+ relcount
3393 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3396 if (r
== opd
->relocation
+ relcount
)
3399 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3402 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3405 sym
= *r
->sym_ptr_ptr
;
3406 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3407 sym
->section
->id
, sym
->value
+ r
->addend
))
3412 s
->flags
|= BSF_SYNTHETIC
;
3413 s
->section
= sym
->section
;
3414 s
->value
= sym
->value
+ r
->addend
;
3417 len
= strlen (syms
[i
]->name
);
3418 memcpy (names
, syms
[i
]->name
, len
+ 1);
3420 /* Have udata.p point back to the original symbol this
3421 synthetic symbol was derived from. */
3422 s
->udata
.p
= syms
[i
];
3429 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3430 bfd_byte
*contents
= NULL
;
3433 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3434 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3437 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3439 free_contents_and_exit_err
:
3441 free_contents_and_exit
:
3448 for (i
= secsymend
; i
< opdsymend
; ++i
)
3452 /* Ignore bogus symbols. */
3453 if (syms
[i
]->value
> opd
->size
- 8)
3456 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3457 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3460 size
+= sizeof (asymbol
);
3461 size
+= strlen (syms
[i
]->name
) + 2;
3465 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3467 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3469 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3471 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3473 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3474 goto free_contents_and_exit_err
;
3476 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3477 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3480 extdynend
= extdyn
+ dynamic
->size
;
3481 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3483 Elf_Internal_Dyn dyn
;
3484 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3486 if (dyn
.d_tag
== DT_NULL
)
3489 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3491 /* The first glink stub starts at offset 32; see
3492 comment in ppc64_elf_finish_dynamic_sections. */
3493 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3494 /* The .glink section usually does not survive the final
3495 link; search for the section (usually .text) where the
3496 glink stubs now reside. */
3497 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3508 /* Determine __glink trampoline by reading the relative branch
3509 from the first glink stub. */
3511 unsigned int off
= 0;
3513 while (bfd_get_section_contents (abfd
, glink
, buf
,
3514 glink_vma
+ off
- glink
->vma
, 4))
3516 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3518 if ((insn
& ~0x3fffffc) == 0)
3520 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3529 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3531 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3534 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3535 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3536 goto free_contents_and_exit_err
;
3538 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3539 size
+= plt_count
* sizeof (asymbol
);
3541 p
= relplt
->relocation
;
3542 for (i
= 0; i
< plt_count
; i
++, p
++)
3544 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3546 size
+= sizeof ("+0x") - 1 + 16;
3552 goto free_contents_and_exit
;
3553 s
= *ret
= bfd_malloc (size
);
3555 goto free_contents_and_exit_err
;
3557 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3559 for (i
= secsymend
; i
< opdsymend
; ++i
)
3563 if (syms
[i
]->value
> opd
->size
- 8)
3566 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3567 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3571 asection
*sec
= abfd
->sections
;
3578 long mid
= (lo
+ hi
) >> 1;
3579 if (syms
[mid
]->section
->vma
< ent
)
3581 else if (syms
[mid
]->section
->vma
> ent
)
3585 sec
= syms
[mid
]->section
;
3590 if (lo
>= hi
&& lo
> codesecsym
)
3591 sec
= syms
[lo
- 1]->section
;
3593 for (; sec
!= NULL
; sec
= sec
->next
)
3597 /* SEC_LOAD may not be set if SEC is from a separate debug
3599 if ((sec
->flags
& SEC_ALLOC
) == 0)
3601 if ((sec
->flags
& SEC_CODE
) != 0)
3604 s
->flags
|= BSF_SYNTHETIC
;
3605 s
->value
= ent
- s
->section
->vma
;
3608 len
= strlen (syms
[i
]->name
);
3609 memcpy (names
, syms
[i
]->name
, len
+ 1);
3611 /* Have udata.p point back to the original symbol this
3612 synthetic symbol was derived from. */
3613 s
->udata
.p
= syms
[i
];
3619 if (glink
!= NULL
&& relplt
!= NULL
)
3623 /* Add a symbol for the main glink trampoline. */
3624 memset (s
, 0, sizeof *s
);
3626 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3628 s
->value
= resolv_vma
- glink
->vma
;
3630 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3631 names
+= sizeof ("__glink_PLTresolve");
3636 /* FIXME: It would be very much nicer to put sym@plt on the
3637 stub rather than on the glink branch table entry. The
3638 objdump disassembler would then use a sensible symbol
3639 name on plt calls. The difficulty in doing so is
3640 a) finding the stubs, and,
3641 b) matching stubs against plt entries, and,
3642 c) there can be multiple stubs for a given plt entry.
3644 Solving (a) could be done by code scanning, but older
3645 ppc64 binaries used different stubs to current code.
3646 (b) is the tricky one since you need to known the toc
3647 pointer for at least one function that uses a pic stub to
3648 be able to calculate the plt address referenced.
3649 (c) means gdb would need to set multiple breakpoints (or
3650 find the glink branch itself) when setting breakpoints
3651 for pending shared library loads. */
3652 p
= relplt
->relocation
;
3653 for (i
= 0; i
< plt_count
; i
++, p
++)
3657 *s
= **p
->sym_ptr_ptr
;
3658 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3659 we are defining a symbol, ensure one of them is set. */
3660 if ((s
->flags
& BSF_LOCAL
) == 0)
3661 s
->flags
|= BSF_GLOBAL
;
3662 s
->flags
|= BSF_SYNTHETIC
;
3664 s
->value
= glink_vma
- glink
->vma
;
3667 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3668 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3672 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3673 names
+= sizeof ("+0x") - 1;
3674 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3675 names
+= strlen (names
);
3677 memcpy (names
, "@plt", sizeof ("@plt"));
3678 names
+= sizeof ("@plt");
3698 /* The following functions are specific to the ELF linker, while
3699 functions above are used generally. Those named ppc64_elf_* are
3700 called by the main ELF linker code. They appear in this file more
3701 or less in the order in which they are called. eg.
3702 ppc64_elf_check_relocs is called early in the link process,
3703 ppc64_elf_finish_dynamic_sections is one of the last functions
3706 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3707 functions have both a function code symbol and a function descriptor
3708 symbol. A call to foo in a relocatable object file looks like:
3715 The function definition in another object file might be:
3719 . .quad .TOC.@tocbase
3725 When the linker resolves the call during a static link, the branch
3726 unsurprisingly just goes to .foo and the .opd information is unused.
3727 If the function definition is in a shared library, things are a little
3728 different: The call goes via a plt call stub, the opd information gets
3729 copied to the plt, and the linker patches the nop.
3737 . std 2,40(1) # in practice, the call stub
3738 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3739 . addi 11,11,Lfoo@toc@l # this is the general idea
3747 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3749 The "reloc ()" notation is supposed to indicate that the linker emits
3750 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3753 What are the difficulties here? Well, firstly, the relocations
3754 examined by the linker in check_relocs are against the function code
3755 sym .foo, while the dynamic relocation in the plt is emitted against
3756 the function descriptor symbol, foo. Somewhere along the line, we need
3757 to carefully copy dynamic link information from one symbol to the other.
3758 Secondly, the generic part of the elf linker will make .foo a dynamic
3759 symbol as is normal for most other backends. We need foo dynamic
3760 instead, at least for an application final link. However, when
3761 creating a shared library containing foo, we need to have both symbols
3762 dynamic so that references to .foo are satisfied during the early
3763 stages of linking. Otherwise the linker might decide to pull in a
3764 definition from some other object, eg. a static library.
3766 Update: As of August 2004, we support a new convention. Function
3767 calls may use the function descriptor symbol, ie. "bl foo". This
3768 behaves exactly as "bl .foo". */
3770 /* Of those relocs that might be copied as dynamic relocs, this function
3771 selects those that must be copied when linking a shared library,
3772 even when the symbol is local. */
3775 must_be_dyn_reloc (struct bfd_link_info
*info
,
3776 enum elf_ppc64_reloc_type r_type
)
3788 case R_PPC64_TPREL16
:
3789 case R_PPC64_TPREL16_LO
:
3790 case R_PPC64_TPREL16_HI
:
3791 case R_PPC64_TPREL16_HA
:
3792 case R_PPC64_TPREL16_DS
:
3793 case R_PPC64_TPREL16_LO_DS
:
3794 case R_PPC64_TPREL16_HIGH
:
3795 case R_PPC64_TPREL16_HIGHA
:
3796 case R_PPC64_TPREL16_HIGHER
:
3797 case R_PPC64_TPREL16_HIGHERA
:
3798 case R_PPC64_TPREL16_HIGHEST
:
3799 case R_PPC64_TPREL16_HIGHESTA
:
3800 case R_PPC64_TPREL64
:
3801 return !bfd_link_executable (info
);
3805 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3806 copying dynamic variables from a shared lib into an app's dynbss
3807 section, and instead use a dynamic relocation to point into the
3808 shared lib. With code that gcc generates, it's vital that this be
3809 enabled; In the PowerPC64 ABI, the address of a function is actually
3810 the address of a function descriptor, which resides in the .opd
3811 section. gcc uses the descriptor directly rather than going via the
3812 GOT as some other ABI's do, which means that initialized function
3813 pointers must reference the descriptor. Thus, a function pointer
3814 initialized to the address of a function in a shared library will
3815 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3816 redefines the function descriptor symbol to point to the copy. This
3817 presents a problem as a plt entry for that function is also
3818 initialized from the function descriptor symbol and the copy reloc
3819 may not be initialized first. */
3820 #define ELIMINATE_COPY_RELOCS 1
3822 /* Section name for stubs is the associated section name plus this
3824 #define STUB_SUFFIX ".stub"
3827 ppc_stub_long_branch:
3828 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3829 destination, but a 24 bit branch in a stub section will reach.
3832 ppc_stub_plt_branch:
3833 Similar to the above, but a 24 bit branch in the stub section won't
3834 reach its destination.
3835 . addis %r11,%r2,xxx@toc@ha
3836 . ld %r12,xxx@toc@l(%r11)
3841 Used to call a function in a shared library. If it so happens that
3842 the plt entry referenced crosses a 64k boundary, then an extra
3843 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3845 . addis %r11,%r2,xxx@toc@ha
3846 . ld %r12,xxx+0@toc@l(%r11)
3848 . ld %r2,xxx+8@toc@l(%r11)
3849 . ld %r11,xxx+16@toc@l(%r11)
3852 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3853 code to adjust the value and save r2 to support multiple toc sections.
3854 A ppc_stub_long_branch with an r2 offset looks like:
3856 . addis %r2,%r2,off@ha
3857 . addi %r2,%r2,off@l
3860 A ppc_stub_plt_branch with an r2 offset looks like:
3862 . addis %r11,%r2,xxx@toc@ha
3863 . ld %r12,xxx@toc@l(%r11)
3864 . addis %r2,%r2,off@ha
3865 . addi %r2,%r2,off@l
3869 In cases where the "addis" instruction would add zero, the "addis" is
3870 omitted and following instructions modified slightly in some cases.
3873 enum ppc_stub_type
{
3875 ppc_stub_long_branch
,
3876 ppc_stub_long_branch_r2off
,
3877 ppc_stub_plt_branch
,
3878 ppc_stub_plt_branch_r2off
,
3880 ppc_stub_plt_call_r2save
,
3881 ppc_stub_global_entry
,
3885 /* Information on stub grouping. */
3888 /* The stub section. */
3890 /* This is the section to which stubs in the group will be attached. */
3893 struct map_stub
*next
;
3894 /* Whether to emit a copy of register save/restore functions in this
3899 struct ppc_stub_hash_entry
{
3901 /* Base hash table entry structure. */
3902 struct bfd_hash_entry root
;
3904 enum ppc_stub_type stub_type
;
3906 /* Group information. */
3907 struct map_stub
*group
;
3909 /* Offset within stub_sec of the beginning of this stub. */
3910 bfd_vma stub_offset
;
3912 /* Given the symbol's value and its section we can determine its final
3913 value when building the stubs (so the stub knows where to jump. */
3914 bfd_vma target_value
;
3915 asection
*target_section
;
3917 /* The symbol table entry, if any, that this was derived from. */
3918 struct ppc_link_hash_entry
*h
;
3919 struct plt_entry
*plt_ent
;
3921 /* Symbol st_other. */
3922 unsigned char other
;
3925 struct ppc_branch_hash_entry
{
3927 /* Base hash table entry structure. */
3928 struct bfd_hash_entry root
;
3930 /* Offset within branch lookup table. */
3931 unsigned int offset
;
3933 /* Generation marker. */
3937 /* Used to track dynamic relocations for local symbols. */
3938 struct ppc_dyn_relocs
3940 struct ppc_dyn_relocs
*next
;
3942 /* The input section of the reloc. */
3945 /* Total number of relocs copied for the input section. */
3946 unsigned int count
: 31;
3948 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3949 unsigned int ifunc
: 1;
3952 struct ppc_link_hash_entry
3954 struct elf_link_hash_entry elf
;
3957 /* A pointer to the most recently used stub hash entry against this
3959 struct ppc_stub_hash_entry
*stub_cache
;
3961 /* A pointer to the next symbol starting with a '.' */
3962 struct ppc_link_hash_entry
*next_dot_sym
;
3965 /* Track dynamic relocs copied for this symbol. */
3966 struct elf_dyn_relocs
*dyn_relocs
;
3968 /* Chain of aliases referring to a weakdef. */
3969 struct ppc_link_hash_entry
*weakref
;
3971 /* Link between function code and descriptor symbols. */
3972 struct ppc_link_hash_entry
*oh
;
3974 /* Flag function code and descriptor symbols. */
3975 unsigned int is_func
:1;
3976 unsigned int is_func_descriptor
:1;
3977 unsigned int fake
:1;
3979 /* Whether global opd/toc sym has been adjusted or not.
3980 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3981 should be set for all globals defined in any opd/toc section. */
3982 unsigned int adjust_done
:1;
3984 /* Set if this is an out-of-line register save/restore function,
3985 with non-standard calling convention. */
3986 unsigned int save_res
:1;
3988 /* Contexts in which symbol is used in the GOT (or TOC).
3989 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3990 corresponding relocs are encountered during check_relocs.
3991 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3992 indicate the corresponding GOT entry type is not needed.
3993 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3994 a TPREL one. We use a separate flag rather than setting TPREL
3995 just for convenience in distinguishing the two cases. */
3996 #define TLS_GD 1 /* GD reloc. */
3997 #define TLS_LD 2 /* LD reloc. */
3998 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3999 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4000 #define TLS_TLS 16 /* Any TLS reloc. */
4001 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4002 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4003 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4004 unsigned char tls_mask
;
4007 /* ppc64 ELF linker hash table. */
4009 struct ppc_link_hash_table
4011 struct elf_link_hash_table elf
;
4013 /* The stub hash table. */
4014 struct bfd_hash_table stub_hash_table
;
4016 /* Another hash table for plt_branch stubs. */
4017 struct bfd_hash_table branch_hash_table
;
4019 /* Hash table for function prologue tocsave. */
4020 htab_t tocsave_htab
;
4022 /* Various options and other info passed from the linker. */
4023 struct ppc64_elf_params
*params
;
4025 /* The size of sec_info below. */
4026 unsigned int sec_info_arr_size
;
4028 /* Per-section array of extra section info. Done this way rather
4029 than as part of ppc64_elf_section_data so we have the info for
4030 non-ppc64 sections. */
4033 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4038 /* The section group that this section belongs to. */
4039 struct map_stub
*group
;
4040 /* A temp section list pointer. */
4045 /* Linked list of groups. */
4046 struct map_stub
*group
;
4048 /* Temp used when calculating TOC pointers. */
4051 asection
*toc_first_sec
;
4053 /* Used when adding symbols. */
4054 struct ppc_link_hash_entry
*dot_syms
;
4056 /* Shortcuts to get to dynamic linker sections. */
4061 asection
*glink_eh_frame
;
4063 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4064 struct ppc_link_hash_entry
*tls_get_addr
;
4065 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4067 /* The size of reliplt used by got entry relocs. */
4068 bfd_size_type got_reli_size
;
4071 unsigned long stub_count
[ppc_stub_global_entry
];
4073 /* Number of stubs against global syms. */
4074 unsigned long stub_globals
;
4076 /* Set if we're linking code with function descriptors. */
4077 unsigned int opd_abi
:1;
4079 /* Support for multiple toc sections. */
4080 unsigned int do_multi_toc
:1;
4081 unsigned int multi_toc_needed
:1;
4082 unsigned int second_toc_pass
:1;
4083 unsigned int do_toc_opt
:1;
4086 unsigned int stub_error
:1;
4088 /* Whether func_desc_adjust needs to be run over symbols. */
4089 unsigned int need_func_desc_adj
:1;
4091 /* Incremented every time we size stubs. */
4092 unsigned int stub_iteration
;
4094 /* Small local sym cache. */
4095 struct sym_cache sym_cache
;
4098 /* Rename some of the generic section flags to better document how they
4101 /* Nonzero if this section has TLS related relocations. */
4102 #define has_tls_reloc sec_flg0
4104 /* Nonzero if this section has a call to __tls_get_addr. */
4105 #define has_tls_get_addr_call sec_flg1
4107 /* Nonzero if this section has any toc or got relocs. */
4108 #define has_toc_reloc sec_flg2
4110 /* Nonzero if this section has a call to another section that uses
4112 #define makes_toc_func_call sec_flg3
4114 /* Recursion protection when determining above flag. */
4115 #define call_check_in_progress sec_flg4
4116 #define call_check_done sec_flg5
4118 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4120 #define ppc_hash_table(p) \
4121 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4122 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4124 #define ppc_stub_hash_lookup(table, string, create, copy) \
4125 ((struct ppc_stub_hash_entry *) \
4126 bfd_hash_lookup ((table), (string), (create), (copy)))
4128 #define ppc_branch_hash_lookup(table, string, create, copy) \
4129 ((struct ppc_branch_hash_entry *) \
4130 bfd_hash_lookup ((table), (string), (create), (copy)))
4132 /* Create an entry in the stub hash table. */
4134 static struct bfd_hash_entry
*
4135 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4136 struct bfd_hash_table
*table
,
4139 /* Allocate the structure if it has not already been allocated by a
4143 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4148 /* Call the allocation method of the superclass. */
4149 entry
= bfd_hash_newfunc (entry
, table
, string
);
4152 struct ppc_stub_hash_entry
*eh
;
4154 /* Initialize the local fields. */
4155 eh
= (struct ppc_stub_hash_entry
*) entry
;
4156 eh
->stub_type
= ppc_stub_none
;
4158 eh
->stub_offset
= 0;
4159 eh
->target_value
= 0;
4160 eh
->target_section
= NULL
;
4169 /* Create an entry in the branch hash table. */
4171 static struct bfd_hash_entry
*
4172 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4173 struct bfd_hash_table
*table
,
4176 /* Allocate the structure if it has not already been allocated by a
4180 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4185 /* Call the allocation method of the superclass. */
4186 entry
= bfd_hash_newfunc (entry
, table
, string
);
4189 struct ppc_branch_hash_entry
*eh
;
4191 /* Initialize the local fields. */
4192 eh
= (struct ppc_branch_hash_entry
*) entry
;
4200 /* Create an entry in a ppc64 ELF linker hash table. */
4202 static struct bfd_hash_entry
*
4203 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4204 struct bfd_hash_table
*table
,
4207 /* Allocate the structure if it has not already been allocated by a
4211 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4216 /* Call the allocation method of the superclass. */
4217 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4220 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4222 memset (&eh
->u
.stub_cache
, 0,
4223 (sizeof (struct ppc_link_hash_entry
)
4224 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4226 /* When making function calls, old ABI code references function entry
4227 points (dot symbols), while new ABI code references the function
4228 descriptor symbol. We need to make any combination of reference and
4229 definition work together, without breaking archive linking.
4231 For a defined function "foo" and an undefined call to "bar":
4232 An old object defines "foo" and ".foo", references ".bar" (possibly
4234 A new object defines "foo" and references "bar".
4236 A new object thus has no problem with its undefined symbols being
4237 satisfied by definitions in an old object. On the other hand, the
4238 old object won't have ".bar" satisfied by a new object.
4240 Keep a list of newly added dot-symbols. */
4242 if (string
[0] == '.')
4244 struct ppc_link_hash_table
*htab
;
4246 htab
= (struct ppc_link_hash_table
*) table
;
4247 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4248 htab
->dot_syms
= eh
;
4255 struct tocsave_entry
{
4261 tocsave_htab_hash (const void *p
)
4263 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4264 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4268 tocsave_htab_eq (const void *p1
, const void *p2
)
4270 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4271 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4272 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4275 /* Destroy a ppc64 ELF linker hash table. */
4278 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4280 struct ppc_link_hash_table
*htab
;
4282 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4283 if (htab
->tocsave_htab
)
4284 htab_delete (htab
->tocsave_htab
);
4285 bfd_hash_table_free (&htab
->branch_hash_table
);
4286 bfd_hash_table_free (&htab
->stub_hash_table
);
4287 _bfd_elf_link_hash_table_free (obfd
);
4290 /* Create a ppc64 ELF linker hash table. */
4292 static struct bfd_link_hash_table
*
4293 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4295 struct ppc_link_hash_table
*htab
;
4296 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4298 htab
= bfd_zmalloc (amt
);
4302 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4303 sizeof (struct ppc_link_hash_entry
),
4310 /* Init the stub hash table too. */
4311 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4312 sizeof (struct ppc_stub_hash_entry
)))
4314 _bfd_elf_link_hash_table_free (abfd
);
4318 /* And the branch hash table. */
4319 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4320 sizeof (struct ppc_branch_hash_entry
)))
4322 bfd_hash_table_free (&htab
->stub_hash_table
);
4323 _bfd_elf_link_hash_table_free (abfd
);
4327 htab
->tocsave_htab
= htab_try_create (1024,
4331 if (htab
->tocsave_htab
== NULL
)
4333 ppc64_elf_link_hash_table_free (abfd
);
4336 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4338 /* Initializing two fields of the union is just cosmetic. We really
4339 only care about glist, but when compiled on a 32-bit host the
4340 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4341 debugger inspection of these fields look nicer. */
4342 htab
->elf
.init_got_refcount
.refcount
= 0;
4343 htab
->elf
.init_got_refcount
.glist
= NULL
;
4344 htab
->elf
.init_plt_refcount
.refcount
= 0;
4345 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4346 htab
->elf
.init_got_offset
.offset
= 0;
4347 htab
->elf
.init_got_offset
.glist
= NULL
;
4348 htab
->elf
.init_plt_offset
.offset
= 0;
4349 htab
->elf
.init_plt_offset
.glist
= NULL
;
4351 return &htab
->elf
.root
;
4354 /* Create sections for linker generated code. */
4357 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4359 struct ppc_link_hash_table
*htab
;
4362 htab
= ppc_hash_table (info
);
4364 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4365 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4366 if (htab
->params
->save_restore_funcs
)
4368 /* Create .sfpr for code to save and restore fp regs. */
4369 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4371 if (htab
->sfpr
== NULL
4372 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4376 if (bfd_link_relocatable (info
))
4379 /* Create .glink for lazy dynamic linking support. */
4380 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4382 if (htab
->glink
== NULL
4383 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4386 if (!info
->no_ld_generated_unwind_info
)
4388 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4389 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4390 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4393 if (htab
->glink_eh_frame
== NULL
4394 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4398 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4399 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4400 if (htab
->elf
.iplt
== NULL
4401 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4404 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4405 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4407 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4408 if (htab
->elf
.irelplt
== NULL
4409 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4412 /* Create branch lookup table for plt_branch stubs. */
4413 flags
= (SEC_ALLOC
| SEC_LOAD
4414 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4415 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4417 if (htab
->brlt
== NULL
4418 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4421 if (!bfd_link_pic (info
))
4424 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4425 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4426 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4429 if (htab
->relbrlt
== NULL
4430 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4436 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4439 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4440 struct ppc64_elf_params
*params
)
4442 struct ppc_link_hash_table
*htab
;
4444 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4446 /* Always hook our dynamic sections into the first bfd, which is the
4447 linker created stub bfd. This ensures that the GOT header is at
4448 the start of the output TOC section. */
4449 htab
= ppc_hash_table (info
);
4450 htab
->elf
.dynobj
= params
->stub_bfd
;
4451 htab
->params
= params
;
4453 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4456 /* Build a name for an entry in the stub hash table. */
4459 ppc_stub_name (const asection
*input_section
,
4460 const asection
*sym_sec
,
4461 const struct ppc_link_hash_entry
*h
,
4462 const Elf_Internal_Rela
*rel
)
4467 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4468 offsets from a sym as a branch target? In fact, we could
4469 probably assume the addend is always zero. */
4470 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4474 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4475 stub_name
= bfd_malloc (len
);
4476 if (stub_name
== NULL
)
4479 len
= sprintf (stub_name
, "%08x.%s+%x",
4480 input_section
->id
& 0xffffffff,
4481 h
->elf
.root
.root
.string
,
4482 (int) rel
->r_addend
& 0xffffffff);
4486 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4487 stub_name
= bfd_malloc (len
);
4488 if (stub_name
== NULL
)
4491 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4492 input_section
->id
& 0xffffffff,
4493 sym_sec
->id
& 0xffffffff,
4494 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4495 (int) rel
->r_addend
& 0xffffffff);
4497 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4498 stub_name
[len
- 2] = 0;
4502 /* Look up an entry in the stub hash. Stub entries are cached because
4503 creating the stub name takes a bit of time. */
4505 static struct ppc_stub_hash_entry
*
4506 ppc_get_stub_entry (const asection
*input_section
,
4507 const asection
*sym_sec
,
4508 struct ppc_link_hash_entry
*h
,
4509 const Elf_Internal_Rela
*rel
,
4510 struct ppc_link_hash_table
*htab
)
4512 struct ppc_stub_hash_entry
*stub_entry
;
4513 struct map_stub
*group
;
4515 /* If this input section is part of a group of sections sharing one
4516 stub section, then use the id of the first section in the group.
4517 Stub names need to include a section id, as there may well be
4518 more than one stub used to reach say, printf, and we need to
4519 distinguish between them. */
4520 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4524 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4525 && h
->u
.stub_cache
->h
== h
4526 && h
->u
.stub_cache
->group
== group
)
4528 stub_entry
= h
->u
.stub_cache
;
4534 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4535 if (stub_name
== NULL
)
4538 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4539 stub_name
, FALSE
, FALSE
);
4541 h
->u
.stub_cache
= stub_entry
;
4549 /* Add a new stub entry to the stub hash. Not all fields of the new
4550 stub entry are initialised. */
4552 static struct ppc_stub_hash_entry
*
4553 ppc_add_stub (const char *stub_name
,
4555 struct bfd_link_info
*info
)
4557 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4558 struct map_stub
*group
;
4561 struct ppc_stub_hash_entry
*stub_entry
;
4563 group
= htab
->sec_info
[section
->id
].u
.group
;
4564 link_sec
= group
->link_sec
;
4565 stub_sec
= group
->stub_sec
;
4566 if (stub_sec
== NULL
)
4572 namelen
= strlen (link_sec
->name
);
4573 len
= namelen
+ sizeof (STUB_SUFFIX
);
4574 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4578 memcpy (s_name
, link_sec
->name
, namelen
);
4579 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4580 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4581 if (stub_sec
== NULL
)
4583 group
->stub_sec
= stub_sec
;
4586 /* Enter this entry into the linker stub hash table. */
4587 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4589 if (stub_entry
== NULL
)
4591 /* xgettext:c-format */
4592 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4593 section
->owner
, stub_name
);
4597 stub_entry
->group
= group
;
4598 stub_entry
->stub_offset
= 0;
4602 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4603 not already done. */
4606 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4608 asection
*got
, *relgot
;
4610 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4612 if (!is_ppc64_elf (abfd
))
4618 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4621 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4622 | SEC_LINKER_CREATED
);
4624 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4626 || !bfd_set_section_alignment (abfd
, got
, 3))
4629 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4630 flags
| SEC_READONLY
);
4632 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4635 ppc64_elf_tdata (abfd
)->got
= got
;
4636 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4640 /* Follow indirect and warning symbol links. */
4642 static inline struct bfd_link_hash_entry
*
4643 follow_link (struct bfd_link_hash_entry
*h
)
4645 while (h
->type
== bfd_link_hash_indirect
4646 || h
->type
== bfd_link_hash_warning
)
4651 static inline struct elf_link_hash_entry
*
4652 elf_follow_link (struct elf_link_hash_entry
*h
)
4654 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4657 static inline struct ppc_link_hash_entry
*
4658 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4660 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4663 /* Merge PLT info on FROM with that on TO. */
4666 move_plt_plist (struct ppc_link_hash_entry
*from
,
4667 struct ppc_link_hash_entry
*to
)
4669 if (from
->elf
.plt
.plist
!= NULL
)
4671 if (to
->elf
.plt
.plist
!= NULL
)
4673 struct plt_entry
**entp
;
4674 struct plt_entry
*ent
;
4676 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4678 struct plt_entry
*dent
;
4680 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4681 if (dent
->addend
== ent
->addend
)
4683 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4690 *entp
= to
->elf
.plt
.plist
;
4693 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4694 from
->elf
.plt
.plist
= NULL
;
4698 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4701 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4702 struct elf_link_hash_entry
*dir
,
4703 struct elf_link_hash_entry
*ind
)
4705 struct ppc_link_hash_entry
*edir
, *eind
;
4707 edir
= (struct ppc_link_hash_entry
*) dir
;
4708 eind
= (struct ppc_link_hash_entry
*) ind
;
4710 edir
->is_func
|= eind
->is_func
;
4711 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4712 edir
->tls_mask
|= eind
->tls_mask
;
4713 if (eind
->oh
!= NULL
)
4714 edir
->oh
= ppc_follow_link (eind
->oh
);
4716 if (edir
->elf
.versioned
!= versioned_hidden
)
4718 /* If called to transfer flags for a weakdef during processing
4719 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4720 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4721 if (!(ELIMINATE_COPY_RELOCS
4722 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4723 && edir
->elf
.dynamic_adjusted
))
4724 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4726 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4727 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4728 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4729 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4730 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4733 /* If we were called to copy over info for a weak sym, don't copy
4734 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4735 in order to simplify readonly_dynrelocs and save a field in the
4736 symbol hash entry, but that means dyn_relocs can't be used in any
4737 tests about a specific symbol, or affect other symbol flags which
4739 Chain weakdefs so we can get from the weakdef back to an alias.
4740 The list is circular so that we don't need to use u.weakdef as
4741 well as this list to look at all aliases. */
4742 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4744 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4749 cur
= edir
->weakref
;
4754 /* We can be called twice for the same symbols.
4755 Don't make multiple loops. */
4759 } while (cur
!= edir
);
4761 next
= add
->weakref
;
4764 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4765 edir
->weakref
= add
;
4768 } while (add
!= NULL
&& add
!= eind
);
4772 /* Copy over any dynamic relocs we may have on the indirect sym. */
4773 if (eind
->dyn_relocs
!= NULL
)
4775 if (edir
->dyn_relocs
!= NULL
)
4777 struct elf_dyn_relocs
**pp
;
4778 struct elf_dyn_relocs
*p
;
4780 /* Add reloc counts against the indirect sym to the direct sym
4781 list. Merge any entries against the same section. */
4782 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4784 struct elf_dyn_relocs
*q
;
4786 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4787 if (q
->sec
== p
->sec
)
4789 q
->pc_count
+= p
->pc_count
;
4790 q
->count
+= p
->count
;
4797 *pp
= edir
->dyn_relocs
;
4800 edir
->dyn_relocs
= eind
->dyn_relocs
;
4801 eind
->dyn_relocs
= NULL
;
4804 /* Copy over got entries that we may have already seen to the
4805 symbol which just became indirect. */
4806 if (eind
->elf
.got
.glist
!= NULL
)
4808 if (edir
->elf
.got
.glist
!= NULL
)
4810 struct got_entry
**entp
;
4811 struct got_entry
*ent
;
4813 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4815 struct got_entry
*dent
;
4817 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4818 if (dent
->addend
== ent
->addend
4819 && dent
->owner
== ent
->owner
4820 && dent
->tls_type
== ent
->tls_type
)
4822 dent
->got
.refcount
+= ent
->got
.refcount
;
4829 *entp
= edir
->elf
.got
.glist
;
4832 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4833 eind
->elf
.got
.glist
= NULL
;
4836 /* And plt entries. */
4837 move_plt_plist (eind
, edir
);
4839 if (eind
->elf
.dynindx
!= -1)
4841 if (edir
->elf
.dynindx
!= -1)
4842 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4843 edir
->elf
.dynstr_index
);
4844 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4845 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4846 eind
->elf
.dynindx
= -1;
4847 eind
->elf
.dynstr_index
= 0;
4851 /* Find the function descriptor hash entry from the given function code
4852 hash entry FH. Link the entries via their OH fields. */
4854 static struct ppc_link_hash_entry
*
4855 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4857 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4861 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4863 fdh
= (struct ppc_link_hash_entry
*)
4864 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4868 fdh
->is_func_descriptor
= 1;
4874 fdh
= ppc_follow_link (fdh
);
4875 fdh
->is_func_descriptor
= 1;
4880 /* Make a fake function descriptor sym for the undefined code sym FH. */
4882 static struct ppc_link_hash_entry
*
4883 make_fdh (struct bfd_link_info
*info
,
4884 struct ppc_link_hash_entry
*fh
)
4886 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4887 struct bfd_link_hash_entry
*bh
= NULL
;
4888 struct ppc_link_hash_entry
*fdh
;
4889 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4893 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4894 fh
->elf
.root
.root
.string
+ 1,
4895 flags
, bfd_und_section_ptr
, 0,
4896 NULL
, FALSE
, FALSE
, &bh
))
4899 fdh
= (struct ppc_link_hash_entry
*) bh
;
4900 fdh
->elf
.non_elf
= 0;
4902 fdh
->is_func_descriptor
= 1;
4909 /* Fix function descriptor symbols defined in .opd sections to be
4913 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4914 struct bfd_link_info
*info
,
4915 Elf_Internal_Sym
*isym
,
4917 flagword
*flags ATTRIBUTE_UNUSED
,
4921 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4922 && (ibfd
->flags
& DYNAMIC
) == 0
4923 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4924 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4927 && strcmp ((*sec
)->name
, ".opd") == 0)
4931 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4932 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4933 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4935 /* If the symbol is a function defined in .opd, and the function
4936 code is in a discarded group, let it appear to be undefined. */
4937 if (!bfd_link_relocatable (info
)
4938 && (*sec
)->reloc_count
!= 0
4939 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4940 FALSE
) != (bfd_vma
) -1
4941 && discarded_section (code_sec
))
4943 *sec
= bfd_und_section_ptr
;
4944 isym
->st_shndx
= SHN_UNDEF
;
4947 else if (*sec
!= NULL
4948 && strcmp ((*sec
)->name
, ".toc") == 0
4949 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4951 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4953 htab
->params
->object_in_toc
= 1;
4956 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4958 if (abiversion (ibfd
) == 0)
4959 set_abiversion (ibfd
, 2);
4960 else if (abiversion (ibfd
) == 1)
4962 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4963 " for ABI version 1\n"), name
);
4964 bfd_set_error (bfd_error_bad_value
);
4972 /* Merge non-visibility st_other attributes: local entry point. */
4975 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4976 const Elf_Internal_Sym
*isym
,
4977 bfd_boolean definition
,
4978 bfd_boolean dynamic
)
4980 if (definition
&& !dynamic
)
4981 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4982 | ELF_ST_VISIBILITY (h
->other
));
4985 /* Hook called on merging a symbol. We use this to clear "fake" since
4986 we now have a real symbol. */
4989 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
4990 const Elf_Internal_Sym
*isym ATTRIBUTE_UNUSED
,
4991 asection
**psec ATTRIBUTE_UNUSED
,
4992 bfd_boolean newdef ATTRIBUTE_UNUSED
,
4993 bfd_boolean olddef ATTRIBUTE_UNUSED
,
4994 bfd
*oldbfd ATTRIBUTE_UNUSED
,
4995 const asection
*oldsec ATTRIBUTE_UNUSED
)
4997 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5001 /* This function makes an old ABI object reference to ".bar" cause the
5002 inclusion of a new ABI object archive that defines "bar".
5003 NAME is a symbol defined in an archive. Return a symbol in the hash
5004 table that might be satisfied by the archive symbols. */
5006 static struct elf_link_hash_entry
*
5007 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5008 struct bfd_link_info
*info
,
5011 struct elf_link_hash_entry
*h
;
5015 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5017 /* Don't return this sym if it is a fake function descriptor
5018 created by add_symbol_adjust. */
5019 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5025 len
= strlen (name
);
5026 dot_name
= bfd_alloc (abfd
, len
+ 2);
5027 if (dot_name
== NULL
)
5028 return (struct elf_link_hash_entry
*) 0 - 1;
5030 memcpy (dot_name
+ 1, name
, len
+ 1);
5031 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5032 bfd_release (abfd
, dot_name
);
5036 /* This function satisfies all old ABI object references to ".bar" if a
5037 new ABI object defines "bar". Well, at least, undefined dot symbols
5038 are made weak. This stops later archive searches from including an
5039 object if we already have a function descriptor definition. It also
5040 prevents the linker complaining about undefined symbols.
5041 We also check and correct mismatched symbol visibility here. The
5042 most restrictive visibility of the function descriptor and the
5043 function entry symbol is used. */
5046 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5048 struct ppc_link_hash_table
*htab
;
5049 struct ppc_link_hash_entry
*fdh
;
5051 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5052 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5054 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5057 if (eh
->elf
.root
.root
.string
[0] != '.')
5060 htab
= ppc_hash_table (info
);
5064 fdh
= lookup_fdh (eh
, htab
);
5066 && !bfd_link_relocatable (info
)
5067 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5068 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5069 && eh
->elf
.ref_regular
)
5071 /* Make an undefined function descriptor sym, in order to
5072 pull in an --as-needed shared lib. Archives are handled
5074 fdh
= make_fdh (info
, eh
);
5081 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5082 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5084 /* Make both descriptor and entry symbol have the most
5085 constraining visibility of either symbol. */
5086 if (entry_vis
< descr_vis
)
5087 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5088 else if (entry_vis
> descr_vis
)
5089 eh
->elf
.other
+= descr_vis
- entry_vis
;
5091 /* Propagate reference flags from entry symbol to function
5092 descriptor symbol. */
5093 fdh
->elf
.root
.non_ir_ref
|= eh
->elf
.root
.non_ir_ref
;
5094 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5095 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5097 if (!fdh
->elf
.forced_local
5098 && fdh
->elf
.dynindx
== -1
5099 && fdh
->elf
.versioned
!= versioned_hidden
5100 && (bfd_link_dll (info
)
5101 || fdh
->elf
.def_dynamic
5102 || fdh
->elf
.ref_dynamic
)
5103 && (eh
->elf
.ref_regular
5104 || eh
->elf
.def_regular
))
5106 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5114 /* Set up opd section info and abiversion for IBFD, and process list
5115 of dot-symbols we made in link_hash_newfunc. */
5118 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5120 struct ppc_link_hash_table
*htab
;
5121 struct ppc_link_hash_entry
**p
, *eh
;
5122 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5124 if (opd
!= NULL
&& opd
->size
!= 0)
5126 if (abiversion (ibfd
) == 0)
5127 set_abiversion (ibfd
, 1);
5128 else if (abiversion (ibfd
) >= 2)
5130 /* xgettext:c-format */
5131 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5133 ibfd
, abiversion (ibfd
));
5134 bfd_set_error (bfd_error_bad_value
);
5138 if ((ibfd
->flags
& DYNAMIC
) == 0
5139 && (opd
->flags
& SEC_RELOC
) != 0
5140 && opd
->reloc_count
!= 0
5141 && !bfd_is_abs_section (opd
->output_section
))
5143 /* Garbage collection needs some extra help with .opd sections.
5144 We don't want to necessarily keep everything referenced by
5145 relocs in .opd, as that would keep all functions. Instead,
5146 if we reference an .opd symbol (a function descriptor), we
5147 want to keep the function code symbol's section. This is
5148 easy for global symbols, but for local syms we need to keep
5149 information about the associated function section. */
5151 asection
**opd_sym_map
;
5153 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5154 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5155 if (opd_sym_map
== NULL
)
5157 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5158 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5159 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5163 if (!is_ppc64_elf (info
->output_bfd
))
5165 htab
= ppc_hash_table (info
);
5169 /* For input files without an explicit abiversion in e_flags
5170 we should have flagged any with symbol st_other bits set
5171 as ELFv1 and above flagged those with .opd as ELFv2.
5172 Set the output abiversion if not yet set, and for any input
5173 still ambiguous, take its abiversion from the output.
5174 Differences in ABI are reported later. */
5175 if (abiversion (info
->output_bfd
) == 0)
5176 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5177 else if (abiversion (ibfd
) == 0)
5178 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5180 p
= &htab
->dot_syms
;
5181 while ((eh
= *p
) != NULL
)
5184 if (&eh
->elf
== htab
->elf
.hgot
)
5186 else if (htab
->elf
.hgot
== NULL
5187 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5188 htab
->elf
.hgot
= &eh
->elf
;
5189 else if (abiversion (ibfd
) <= 1)
5191 htab
->need_func_desc_adj
= 1;
5192 if (!add_symbol_adjust (eh
, info
))
5195 p
= &eh
->u
.next_dot_sym
;
5200 /* Undo hash table changes when an --as-needed input file is determined
5201 not to be needed. */
5204 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5205 struct bfd_link_info
*info
,
5206 enum notice_asneeded_action act
)
5208 if (act
== notice_not_needed
)
5210 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5215 htab
->dot_syms
= NULL
;
5217 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5220 /* If --just-symbols against a final linked binary, then assume we need
5221 toc adjusting stubs when calling functions defined there. */
5224 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5226 if ((sec
->flags
& SEC_CODE
) != 0
5227 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5228 && is_ppc64_elf (sec
->owner
))
5230 if (abiversion (sec
->owner
) >= 2
5231 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5232 sec
->has_toc_reloc
= 1;
5234 _bfd_elf_link_just_syms (sec
, info
);
5237 static struct plt_entry
**
5238 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5239 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5241 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5242 struct plt_entry
**local_plt
;
5243 unsigned char *local_got_tls_masks
;
5245 if (local_got_ents
== NULL
)
5247 bfd_size_type size
= symtab_hdr
->sh_info
;
5249 size
*= (sizeof (*local_got_ents
)
5250 + sizeof (*local_plt
)
5251 + sizeof (*local_got_tls_masks
));
5252 local_got_ents
= bfd_zalloc (abfd
, size
);
5253 if (local_got_ents
== NULL
)
5255 elf_local_got_ents (abfd
) = local_got_ents
;
5258 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5260 struct got_entry
*ent
;
5262 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5263 if (ent
->addend
== r_addend
5264 && ent
->owner
== abfd
5265 && ent
->tls_type
== tls_type
)
5269 bfd_size_type amt
= sizeof (*ent
);
5270 ent
= bfd_alloc (abfd
, amt
);
5273 ent
->next
= local_got_ents
[r_symndx
];
5274 ent
->addend
= r_addend
;
5276 ent
->tls_type
= tls_type
;
5277 ent
->is_indirect
= FALSE
;
5278 ent
->got
.refcount
= 0;
5279 local_got_ents
[r_symndx
] = ent
;
5281 ent
->got
.refcount
+= 1;
5284 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5285 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5286 local_got_tls_masks
[r_symndx
] |= tls_type
;
5288 return local_plt
+ r_symndx
;
5292 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5294 struct plt_entry
*ent
;
5296 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5297 if (ent
->addend
== addend
)
5301 bfd_size_type amt
= sizeof (*ent
);
5302 ent
= bfd_alloc (abfd
, amt
);
5306 ent
->addend
= addend
;
5307 ent
->plt
.refcount
= 0;
5310 ent
->plt
.refcount
+= 1;
5315 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5317 return (r_type
== R_PPC64_REL24
5318 || r_type
== R_PPC64_REL14
5319 || r_type
== R_PPC64_REL14_BRTAKEN
5320 || r_type
== R_PPC64_REL14_BRNTAKEN
5321 || r_type
== R_PPC64_ADDR24
5322 || r_type
== R_PPC64_ADDR14
5323 || r_type
== R_PPC64_ADDR14_BRTAKEN
5324 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5327 /* Look through the relocs for a section during the first phase, and
5328 calculate needed space in the global offset table, procedure
5329 linkage table, and dynamic reloc sections. */
5332 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5333 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5335 struct ppc_link_hash_table
*htab
;
5336 Elf_Internal_Shdr
*symtab_hdr
;
5337 struct elf_link_hash_entry
**sym_hashes
;
5338 const Elf_Internal_Rela
*rel
;
5339 const Elf_Internal_Rela
*rel_end
;
5341 asection
**opd_sym_map
;
5342 struct elf_link_hash_entry
*tga
, *dottga
;
5344 if (bfd_link_relocatable (info
))
5347 /* Don't do anything special with non-loaded, non-alloced sections.
5348 In particular, any relocs in such sections should not affect GOT
5349 and PLT reference counting (ie. we don't allow them to create GOT
5350 or PLT entries), there's no possibility or desire to optimize TLS
5351 relocs, and there's not much point in propagating relocs to shared
5352 libs that the dynamic linker won't relocate. */
5353 if ((sec
->flags
& SEC_ALLOC
) == 0)
5356 BFD_ASSERT (is_ppc64_elf (abfd
));
5358 htab
= ppc_hash_table (info
);
5362 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5363 FALSE
, FALSE
, TRUE
);
5364 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5365 FALSE
, FALSE
, TRUE
);
5366 symtab_hdr
= &elf_symtab_hdr (abfd
);
5367 sym_hashes
= elf_sym_hashes (abfd
);
5370 if (ppc64_elf_section_data (sec
) != NULL
5371 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5372 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5374 rel_end
= relocs
+ sec
->reloc_count
;
5375 for (rel
= relocs
; rel
< rel_end
; rel
++)
5377 unsigned long r_symndx
;
5378 struct elf_link_hash_entry
*h
;
5379 enum elf_ppc64_reloc_type r_type
;
5381 struct _ppc64_elf_section_data
*ppc64_sec
;
5382 struct plt_entry
**ifunc
, **plt_list
;
5384 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5385 if (r_symndx
< symtab_hdr
->sh_info
)
5389 struct ppc_link_hash_entry
*eh
;
5391 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5392 h
= elf_follow_link (h
);
5393 eh
= (struct ppc_link_hash_entry
*) h
;
5395 /* PR15323, ref flags aren't set for references in the same
5397 h
->root
.non_ir_ref
= 1;
5398 if (eh
->is_func
&& eh
->oh
!= NULL
)
5399 eh
->oh
->elf
.root
.non_ir_ref
= 1;
5401 if (h
== htab
->elf
.hgot
)
5402 sec
->has_toc_reloc
= 1;
5409 if (h
->type
== STT_GNU_IFUNC
)
5412 ifunc
= &h
->plt
.plist
;
5417 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5422 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5424 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5425 rel
->r_addend
, PLT_IFUNC
);
5431 r_type
= ELF64_R_TYPE (rel
->r_info
);
5436 /* These special tls relocs tie a call to __tls_get_addr with
5437 its parameter symbol. */
5440 case R_PPC64_GOT_TLSLD16
:
5441 case R_PPC64_GOT_TLSLD16_LO
:
5442 case R_PPC64_GOT_TLSLD16_HI
:
5443 case R_PPC64_GOT_TLSLD16_HA
:
5444 tls_type
= TLS_TLS
| TLS_LD
;
5447 case R_PPC64_GOT_TLSGD16
:
5448 case R_PPC64_GOT_TLSGD16_LO
:
5449 case R_PPC64_GOT_TLSGD16_HI
:
5450 case R_PPC64_GOT_TLSGD16_HA
:
5451 tls_type
= TLS_TLS
| TLS_GD
;
5454 case R_PPC64_GOT_TPREL16_DS
:
5455 case R_PPC64_GOT_TPREL16_LO_DS
:
5456 case R_PPC64_GOT_TPREL16_HI
:
5457 case R_PPC64_GOT_TPREL16_HA
:
5458 if (bfd_link_pic (info
))
5459 info
->flags
|= DF_STATIC_TLS
;
5460 tls_type
= TLS_TLS
| TLS_TPREL
;
5463 case R_PPC64_GOT_DTPREL16_DS
:
5464 case R_PPC64_GOT_DTPREL16_LO_DS
:
5465 case R_PPC64_GOT_DTPREL16_HI
:
5466 case R_PPC64_GOT_DTPREL16_HA
:
5467 tls_type
= TLS_TLS
| TLS_DTPREL
;
5469 sec
->has_tls_reloc
= 1;
5473 case R_PPC64_GOT16_DS
:
5474 case R_PPC64_GOT16_HA
:
5475 case R_PPC64_GOT16_HI
:
5476 case R_PPC64_GOT16_LO
:
5477 case R_PPC64_GOT16_LO_DS
:
5478 /* This symbol requires a global offset table entry. */
5479 sec
->has_toc_reloc
= 1;
5480 if (r_type
== R_PPC64_GOT_TLSLD16
5481 || r_type
== R_PPC64_GOT_TLSGD16
5482 || r_type
== R_PPC64_GOT_TPREL16_DS
5483 || r_type
== R_PPC64_GOT_DTPREL16_DS
5484 || r_type
== R_PPC64_GOT16
5485 || r_type
== R_PPC64_GOT16_DS
)
5487 htab
->do_multi_toc
= 1;
5488 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5491 if (ppc64_elf_tdata (abfd
)->got
== NULL
5492 && !create_got_section (abfd
, info
))
5497 struct ppc_link_hash_entry
*eh
;
5498 struct got_entry
*ent
;
5500 eh
= (struct ppc_link_hash_entry
*) h
;
5501 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5502 if (ent
->addend
== rel
->r_addend
5503 && ent
->owner
== abfd
5504 && ent
->tls_type
== tls_type
)
5508 bfd_size_type amt
= sizeof (*ent
);
5509 ent
= bfd_alloc (abfd
, amt
);
5512 ent
->next
= eh
->elf
.got
.glist
;
5513 ent
->addend
= rel
->r_addend
;
5515 ent
->tls_type
= tls_type
;
5516 ent
->is_indirect
= FALSE
;
5517 ent
->got
.refcount
= 0;
5518 eh
->elf
.got
.glist
= ent
;
5520 ent
->got
.refcount
+= 1;
5521 eh
->tls_mask
|= tls_type
;
5524 /* This is a global offset table entry for a local symbol. */
5525 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5526 rel
->r_addend
, tls_type
))
5529 /* We may also need a plt entry if the symbol turns out to be
5531 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5533 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5538 case R_PPC64_PLT16_HA
:
5539 case R_PPC64_PLT16_HI
:
5540 case R_PPC64_PLT16_LO
:
5543 /* This symbol requires a procedure linkage table entry. */
5548 if (h
->root
.root
.string
[0] == '.'
5549 && h
->root
.root
.string
[1] != '\0')
5550 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5551 plt_list
= &h
->plt
.plist
;
5553 if (plt_list
== NULL
)
5555 /* It does not make sense to have a procedure linkage
5556 table entry for a non-ifunc local symbol. */
5557 info
->callbacks
->einfo
5558 /* xgettext:c-format */
5559 (_("%P: %H: %s reloc against local symbol\n"),
5560 abfd
, sec
, rel
->r_offset
,
5561 ppc64_elf_howto_table
[r_type
]->name
);
5562 bfd_set_error (bfd_error_bad_value
);
5565 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5569 /* The following relocations don't need to propagate the
5570 relocation if linking a shared object since they are
5571 section relative. */
5572 case R_PPC64_SECTOFF
:
5573 case R_PPC64_SECTOFF_LO
:
5574 case R_PPC64_SECTOFF_HI
:
5575 case R_PPC64_SECTOFF_HA
:
5576 case R_PPC64_SECTOFF_DS
:
5577 case R_PPC64_SECTOFF_LO_DS
:
5578 case R_PPC64_DTPREL16
:
5579 case R_PPC64_DTPREL16_LO
:
5580 case R_PPC64_DTPREL16_HI
:
5581 case R_PPC64_DTPREL16_HA
:
5582 case R_PPC64_DTPREL16_DS
:
5583 case R_PPC64_DTPREL16_LO_DS
:
5584 case R_PPC64_DTPREL16_HIGH
:
5585 case R_PPC64_DTPREL16_HIGHA
:
5586 case R_PPC64_DTPREL16_HIGHER
:
5587 case R_PPC64_DTPREL16_HIGHERA
:
5588 case R_PPC64_DTPREL16_HIGHEST
:
5589 case R_PPC64_DTPREL16_HIGHESTA
:
5594 case R_PPC64_REL16_LO
:
5595 case R_PPC64_REL16_HI
:
5596 case R_PPC64_REL16_HA
:
5597 case R_PPC64_REL16DX_HA
:
5600 /* Not supported as a dynamic relocation. */
5601 case R_PPC64_ADDR64_LOCAL
:
5602 if (bfd_link_pic (info
))
5604 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5606 /* xgettext:c-format */
5607 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5608 "in shared libraries and PIEs.\n"),
5609 abfd
, sec
, rel
->r_offset
,
5610 ppc64_elf_howto_table
[r_type
]->name
);
5611 bfd_set_error (bfd_error_bad_value
);
5617 case R_PPC64_TOC16_DS
:
5618 htab
->do_multi_toc
= 1;
5619 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5621 case R_PPC64_TOC16_LO
:
5622 case R_PPC64_TOC16_HI
:
5623 case R_PPC64_TOC16_HA
:
5624 case R_PPC64_TOC16_LO_DS
:
5625 sec
->has_toc_reloc
= 1;
5632 /* This relocation describes the C++ object vtable hierarchy.
5633 Reconstruct it for later use during GC. */
5634 case R_PPC64_GNU_VTINHERIT
:
5635 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5639 /* This relocation describes which C++ vtable entries are actually
5640 used. Record for later use during GC. */
5641 case R_PPC64_GNU_VTENTRY
:
5642 BFD_ASSERT (h
!= NULL
);
5644 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5649 case R_PPC64_REL14_BRTAKEN
:
5650 case R_PPC64_REL14_BRNTAKEN
:
5652 asection
*dest
= NULL
;
5654 /* Heuristic: If jumping outside our section, chances are
5655 we are going to need a stub. */
5658 /* If the sym is weak it may be overridden later, so
5659 don't assume we know where a weak sym lives. */
5660 if (h
->root
.type
== bfd_link_hash_defined
)
5661 dest
= h
->root
.u
.def
.section
;
5665 Elf_Internal_Sym
*isym
;
5667 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5672 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5676 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5685 if (h
->root
.root
.string
[0] == '.'
5686 && h
->root
.root
.string
[1] != '\0')
5687 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5689 if (h
== tga
|| h
== dottga
)
5691 sec
->has_tls_reloc
= 1;
5693 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5694 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5695 /* We have a new-style __tls_get_addr call with
5699 /* Mark this section as having an old-style call. */
5700 sec
->has_tls_get_addr_call
= 1;
5702 plt_list
= &h
->plt
.plist
;
5705 /* We may need a .plt entry if the function this reloc
5706 refers to is in a shared lib. */
5708 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5712 case R_PPC64_ADDR14
:
5713 case R_PPC64_ADDR14_BRNTAKEN
:
5714 case R_PPC64_ADDR14_BRTAKEN
:
5715 case R_PPC64_ADDR24
:
5718 case R_PPC64_TPREL64
:
5719 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5720 if (bfd_link_pic (info
))
5721 info
->flags
|= DF_STATIC_TLS
;
5724 case R_PPC64_DTPMOD64
:
5725 if (rel
+ 1 < rel_end
5726 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5727 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5728 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5730 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5733 case R_PPC64_DTPREL64
:
5734 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5736 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5737 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5738 /* This is the second reloc of a dtpmod, dtprel pair.
5739 Don't mark with TLS_DTPREL. */
5743 sec
->has_tls_reloc
= 1;
5746 struct ppc_link_hash_entry
*eh
;
5747 eh
= (struct ppc_link_hash_entry
*) h
;
5748 eh
->tls_mask
|= tls_type
;
5751 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5752 rel
->r_addend
, tls_type
))
5755 ppc64_sec
= ppc64_elf_section_data (sec
);
5756 if (ppc64_sec
->sec_type
!= sec_toc
)
5760 /* One extra to simplify get_tls_mask. */
5761 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5762 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5763 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5765 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5766 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5767 if (ppc64_sec
->u
.toc
.add
== NULL
)
5769 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5770 ppc64_sec
->sec_type
= sec_toc
;
5772 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5773 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5774 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5776 /* Mark the second slot of a GD or LD entry.
5777 -1 to indicate GD and -2 to indicate LD. */
5778 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5779 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5780 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5781 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5784 case R_PPC64_TPREL16
:
5785 case R_PPC64_TPREL16_LO
:
5786 case R_PPC64_TPREL16_HI
:
5787 case R_PPC64_TPREL16_HA
:
5788 case R_PPC64_TPREL16_DS
:
5789 case R_PPC64_TPREL16_LO_DS
:
5790 case R_PPC64_TPREL16_HIGH
:
5791 case R_PPC64_TPREL16_HIGHA
:
5792 case R_PPC64_TPREL16_HIGHER
:
5793 case R_PPC64_TPREL16_HIGHERA
:
5794 case R_PPC64_TPREL16_HIGHEST
:
5795 case R_PPC64_TPREL16_HIGHESTA
:
5796 if (bfd_link_pic (info
))
5798 info
->flags
|= DF_STATIC_TLS
;
5803 case R_PPC64_ADDR64
:
5804 if (opd_sym_map
!= NULL
5805 && rel
+ 1 < rel_end
5806 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5809 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5813 Elf_Internal_Sym
*isym
;
5815 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5820 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5821 if (s
!= NULL
&& s
!= sec
)
5822 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5827 case R_PPC64_ADDR16
:
5828 case R_PPC64_ADDR16_DS
:
5829 case R_PPC64_ADDR16_HA
:
5830 case R_PPC64_ADDR16_HI
:
5831 case R_PPC64_ADDR16_HIGH
:
5832 case R_PPC64_ADDR16_HIGHA
:
5833 case R_PPC64_ADDR16_HIGHER
:
5834 case R_PPC64_ADDR16_HIGHERA
:
5835 case R_PPC64_ADDR16_HIGHEST
:
5836 case R_PPC64_ADDR16_HIGHESTA
:
5837 case R_PPC64_ADDR16_LO
:
5838 case R_PPC64_ADDR16_LO_DS
:
5839 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5840 && rel
->r_addend
== 0)
5842 /* We may need a .plt entry if this reloc refers to a
5843 function in a shared lib. */
5844 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5846 h
->pointer_equality_needed
= 1;
5853 case R_PPC64_ADDR32
:
5854 case R_PPC64_UADDR16
:
5855 case R_PPC64_UADDR32
:
5856 case R_PPC64_UADDR64
:
5858 if (h
!= NULL
&& !bfd_link_pic (info
))
5859 /* We may need a copy reloc. */
5862 /* Don't propagate .opd relocs. */
5863 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5866 /* If we are creating a shared library, and this is a reloc
5867 against a global symbol, or a non PC relative reloc
5868 against a local symbol, then we need to copy the reloc
5869 into the shared library. However, if we are linking with
5870 -Bsymbolic, we do not need to copy a reloc against a
5871 global symbol which is defined in an object we are
5872 including in the link (i.e., DEF_REGULAR is set). At
5873 this point we have not seen all the input files, so it is
5874 possible that DEF_REGULAR is not set now but will be set
5875 later (it is never cleared). In case of a weak definition,
5876 DEF_REGULAR may be cleared later by a strong definition in
5877 a shared library. We account for that possibility below by
5878 storing information in the dyn_relocs field of the hash
5879 table entry. A similar situation occurs when creating
5880 shared libraries and symbol visibility changes render the
5883 If on the other hand, we are creating an executable, we
5884 may need to keep relocations for symbols satisfied by a
5885 dynamic library if we manage to avoid copy relocs for the
5888 if ((bfd_link_pic (info
)
5889 && (must_be_dyn_reloc (info
, r_type
)
5891 && (!SYMBOLIC_BIND (info
, h
)
5892 || h
->root
.type
== bfd_link_hash_defweak
5893 || !h
->def_regular
))))
5894 || (ELIMINATE_COPY_RELOCS
5895 && !bfd_link_pic (info
)
5897 && (h
->root
.type
== bfd_link_hash_defweak
5898 || !h
->def_regular
))
5899 || (!bfd_link_pic (info
)
5902 /* We must copy these reloc types into the output file.
5903 Create a reloc section in dynobj and make room for
5907 sreloc
= _bfd_elf_make_dynamic_reloc_section
5908 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5914 /* If this is a global symbol, we count the number of
5915 relocations we need for this symbol. */
5918 struct elf_dyn_relocs
*p
;
5919 struct elf_dyn_relocs
**head
;
5921 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5923 if (p
== NULL
|| p
->sec
!= sec
)
5925 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5935 if (!must_be_dyn_reloc (info
, r_type
))
5940 /* Track dynamic relocs needed for local syms too.
5941 We really need local syms available to do this
5943 struct ppc_dyn_relocs
*p
;
5944 struct ppc_dyn_relocs
**head
;
5945 bfd_boolean is_ifunc
;
5948 Elf_Internal_Sym
*isym
;
5950 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5955 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5959 vpp
= &elf_section_data (s
)->local_dynrel
;
5960 head
= (struct ppc_dyn_relocs
**) vpp
;
5961 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5963 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5965 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5967 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5973 p
->ifunc
= is_ifunc
;
5989 /* Merge backend specific data from an object file to the output
5990 object file when linking. */
5993 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5995 bfd
*obfd
= info
->output_bfd
;
5996 unsigned long iflags
, oflags
;
5998 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6001 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6004 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6007 iflags
= elf_elfheader (ibfd
)->e_flags
;
6008 oflags
= elf_elfheader (obfd
)->e_flags
;
6010 if (iflags
& ~EF_PPC64_ABI
)
6013 /* xgettext:c-format */
6014 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6015 bfd_set_error (bfd_error_bad_value
);
6018 else if (iflags
!= oflags
&& iflags
!= 0)
6021 /* xgettext:c-format */
6022 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6023 ibfd
, iflags
, oflags
);
6024 bfd_set_error (bfd_error_bad_value
);
6028 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6030 /* Merge Tag_compatibility attributes and any common GNU ones. */
6031 _bfd_elf_merge_object_attributes (ibfd
, info
);
6037 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6039 /* Print normal ELF private data. */
6040 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6042 if (elf_elfheader (abfd
)->e_flags
!= 0)
6046 fprintf (file
, _("private flags = 0x%lx:"),
6047 elf_elfheader (abfd
)->e_flags
);
6049 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6050 fprintf (file
, _(" [abiv%ld]"),
6051 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6058 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6059 of the code entry point, and its section, which must be in the same
6060 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6063 opd_entry_value (asection
*opd_sec
,
6065 asection
**code_sec
,
6067 bfd_boolean in_code_sec
)
6069 bfd
*opd_bfd
= opd_sec
->owner
;
6070 Elf_Internal_Rela
*relocs
;
6071 Elf_Internal_Rela
*lo
, *hi
, *look
;
6074 /* No relocs implies we are linking a --just-symbols object, or looking
6075 at a final linked executable with addr2line or somesuch. */
6076 if (opd_sec
->reloc_count
== 0)
6078 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6080 if (contents
== NULL
)
6082 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6083 return (bfd_vma
) -1;
6084 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6087 /* PR 17512: file: 64b9dfbb. */
6088 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6089 return (bfd_vma
) -1;
6091 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6092 if (code_sec
!= NULL
)
6094 asection
*sec
, *likely
= NULL
;
6100 && val
< sec
->vma
+ sec
->size
)
6106 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6108 && (sec
->flags
& SEC_LOAD
) != 0
6109 && (sec
->flags
& SEC_ALLOC
) != 0)
6114 if (code_off
!= NULL
)
6115 *code_off
= val
- likely
->vma
;
6121 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6123 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6125 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6126 /* PR 17512: file: df8e1fd6. */
6128 return (bfd_vma
) -1;
6130 /* Go find the opd reloc at the sym address. */
6132 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6136 look
= lo
+ (hi
- lo
) / 2;
6137 if (look
->r_offset
< offset
)
6139 else if (look
->r_offset
> offset
)
6143 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6145 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6146 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6148 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6149 asection
*sec
= NULL
;
6151 if (symndx
>= symtab_hdr
->sh_info
6152 && elf_sym_hashes (opd_bfd
) != NULL
)
6154 struct elf_link_hash_entry
**sym_hashes
;
6155 struct elf_link_hash_entry
*rh
;
6157 sym_hashes
= elf_sym_hashes (opd_bfd
);
6158 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6161 rh
= elf_follow_link (rh
);
6162 if (rh
->root
.type
!= bfd_link_hash_defined
6163 && rh
->root
.type
!= bfd_link_hash_defweak
)
6165 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6167 val
= rh
->root
.u
.def
.value
;
6168 sec
= rh
->root
.u
.def
.section
;
6175 Elf_Internal_Sym
*sym
;
6177 if (symndx
< symtab_hdr
->sh_info
)
6179 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6182 size_t symcnt
= symtab_hdr
->sh_info
;
6183 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6188 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6194 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6200 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6203 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6204 val
= sym
->st_value
;
6207 val
+= look
->r_addend
;
6208 if (code_off
!= NULL
)
6210 if (code_sec
!= NULL
)
6212 if (in_code_sec
&& *code_sec
!= sec
)
6217 if (sec
->output_section
!= NULL
)
6218 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6227 /* If the ELF symbol SYM might be a function in SEC, return the
6228 function size and set *CODE_OFF to the function's entry point,
6229 otherwise return zero. */
6231 static bfd_size_type
6232 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6237 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6238 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6242 if (!(sym
->flags
& BSF_SYNTHETIC
))
6243 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6245 if (strcmp (sym
->section
->name
, ".opd") == 0)
6247 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6248 bfd_vma symval
= sym
->value
;
6251 && opd
->adjust
!= NULL
6252 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6254 /* opd_entry_value will use cached relocs that have been
6255 adjusted, but with raw symbols. That means both local
6256 and global symbols need adjusting. */
6257 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6263 if (opd_entry_value (sym
->section
, symval
,
6264 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6266 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6267 symbol. This size has nothing to do with the code size of the
6268 function, which is what we're supposed to return, but the
6269 code size isn't available without looking up the dot-sym.
6270 However, doing that would be a waste of time particularly
6271 since elf_find_function will look at the dot-sym anyway.
6272 Now, elf_find_function will keep the largest size of any
6273 function sym found at the code address of interest, so return
6274 1 here to avoid it incorrectly caching a larger function size
6275 for a small function. This does mean we return the wrong
6276 size for a new-ABI function of size 24, but all that does is
6277 disable caching for such functions. */
6283 if (sym
->section
!= sec
)
6285 *code_off
= sym
->value
;
6292 /* Return true if symbol is defined in a regular object file. */
6295 is_static_defined (struct elf_link_hash_entry
*h
)
6297 return ((h
->root
.type
== bfd_link_hash_defined
6298 || h
->root
.type
== bfd_link_hash_defweak
)
6299 && h
->root
.u
.def
.section
!= NULL
6300 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6303 /* If FDH is a function descriptor symbol, return the associated code
6304 entry symbol if it is defined. Return NULL otherwise. */
6306 static struct ppc_link_hash_entry
*
6307 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6309 if (fdh
->is_func_descriptor
)
6311 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6312 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6313 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6319 /* If FH is a function code entry symbol, return the associated
6320 function descriptor symbol if it is defined. Return NULL otherwise. */
6322 static struct ppc_link_hash_entry
*
6323 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6326 && fh
->oh
->is_func_descriptor
)
6328 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6329 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6330 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6336 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6338 /* Garbage collect sections, after first dealing with dot-symbols. */
6341 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6343 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6345 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6347 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6348 htab
->need_func_desc_adj
= 0;
6350 return bfd_elf_gc_sections (abfd
, info
);
6353 /* Mark all our entry sym sections, both opd and code section. */
6356 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6358 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6359 struct bfd_sym_chain
*sym
;
6364 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6366 struct ppc_link_hash_entry
*eh
, *fh
;
6369 eh
= (struct ppc_link_hash_entry
*)
6370 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6373 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6374 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6377 fh
= defined_code_entry (eh
);
6380 sec
= fh
->elf
.root
.u
.def
.section
;
6381 sec
->flags
|= SEC_KEEP
;
6383 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6384 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6385 eh
->elf
.root
.u
.def
.value
,
6386 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6387 sec
->flags
|= SEC_KEEP
;
6389 sec
= eh
->elf
.root
.u
.def
.section
;
6390 sec
->flags
|= SEC_KEEP
;
6394 /* Mark sections containing dynamically referenced symbols. When
6395 building shared libraries, we must assume that any visible symbol is
6399 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6401 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6402 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6403 struct ppc_link_hash_entry
*fdh
;
6404 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6406 /* Dynamic linking info is on the func descriptor sym. */
6407 fdh
= defined_func_desc (eh
);
6411 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6412 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6413 && (eh
->elf
.ref_dynamic
6414 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6415 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6416 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6417 && (!bfd_link_executable (info
)
6418 || info
->export_dynamic
6421 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6422 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6423 || !bfd_hide_sym_by_version (info
->version_info
,
6424 eh
->elf
.root
.root
.string
)))))
6427 struct ppc_link_hash_entry
*fh
;
6429 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6431 /* Function descriptor syms cause the associated
6432 function code sym section to be marked. */
6433 fh
= defined_code_entry (eh
);
6436 code_sec
= fh
->elf
.root
.u
.def
.section
;
6437 code_sec
->flags
|= SEC_KEEP
;
6439 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6440 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6441 eh
->elf
.root
.u
.def
.value
,
6442 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6443 code_sec
->flags
|= SEC_KEEP
;
6449 /* Return the section that should be marked against GC for a given
6453 ppc64_elf_gc_mark_hook (asection
*sec
,
6454 struct bfd_link_info
*info
,
6455 Elf_Internal_Rela
*rel
,
6456 struct elf_link_hash_entry
*h
,
6457 Elf_Internal_Sym
*sym
)
6461 /* Syms return NULL if we're marking .opd, so we avoid marking all
6462 function sections, as all functions are referenced in .opd. */
6464 if (get_opd_info (sec
) != NULL
)
6469 enum elf_ppc64_reloc_type r_type
;
6470 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6472 r_type
= ELF64_R_TYPE (rel
->r_info
);
6475 case R_PPC64_GNU_VTINHERIT
:
6476 case R_PPC64_GNU_VTENTRY
:
6480 switch (h
->root
.type
)
6482 case bfd_link_hash_defined
:
6483 case bfd_link_hash_defweak
:
6484 eh
= (struct ppc_link_hash_entry
*) h
;
6485 fdh
= defined_func_desc (eh
);
6488 /* -mcall-aixdesc code references the dot-symbol on
6489 a call reloc. Mark the function descriptor too
6490 against garbage collection. */
6492 if (fdh
->elf
.u
.weakdef
!= NULL
)
6493 fdh
->elf
.u
.weakdef
->mark
= 1;
6497 /* Function descriptor syms cause the associated
6498 function code sym section to be marked. */
6499 fh
= defined_code_entry (eh
);
6502 /* They also mark their opd section. */
6503 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6505 rsec
= fh
->elf
.root
.u
.def
.section
;
6507 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6508 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6509 eh
->elf
.root
.u
.def
.value
,
6510 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6511 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6513 rsec
= h
->root
.u
.def
.section
;
6516 case bfd_link_hash_common
:
6517 rsec
= h
->root
.u
.c
.p
->section
;
6521 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6527 struct _opd_sec_data
*opd
;
6529 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6530 opd
= get_opd_info (rsec
);
6531 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6535 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6542 /* Update the .got, .plt. and dynamic reloc reference counts for the
6543 section being removed. */
6546 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6547 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6549 struct ppc_link_hash_table
*htab
;
6550 Elf_Internal_Shdr
*symtab_hdr
;
6551 struct elf_link_hash_entry
**sym_hashes
;
6552 struct got_entry
**local_got_ents
;
6553 const Elf_Internal_Rela
*rel
, *relend
;
6555 if (bfd_link_relocatable (info
))
6558 if ((sec
->flags
& SEC_ALLOC
) == 0)
6561 elf_section_data (sec
)->local_dynrel
= NULL
;
6563 htab
= ppc_hash_table (info
);
6567 symtab_hdr
= &elf_symtab_hdr (abfd
);
6568 sym_hashes
= elf_sym_hashes (abfd
);
6569 local_got_ents
= elf_local_got_ents (abfd
);
6571 relend
= relocs
+ sec
->reloc_count
;
6572 for (rel
= relocs
; rel
< relend
; rel
++)
6574 unsigned long r_symndx
;
6575 enum elf_ppc64_reloc_type r_type
;
6576 struct elf_link_hash_entry
*h
= NULL
;
6577 struct plt_entry
**plt_list
;
6578 unsigned char tls_type
= 0;
6580 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6581 r_type
= ELF64_R_TYPE (rel
->r_info
);
6582 if (r_symndx
>= symtab_hdr
->sh_info
)
6584 struct ppc_link_hash_entry
*eh
;
6585 struct elf_dyn_relocs
**pp
;
6586 struct elf_dyn_relocs
*p
;
6588 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6589 h
= elf_follow_link (h
);
6590 eh
= (struct ppc_link_hash_entry
*) h
;
6592 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6595 /* Everything must go for SEC. */
6603 case R_PPC64_GOT_TLSLD16
:
6604 case R_PPC64_GOT_TLSLD16_LO
:
6605 case R_PPC64_GOT_TLSLD16_HI
:
6606 case R_PPC64_GOT_TLSLD16_HA
:
6607 tls_type
= TLS_TLS
| TLS_LD
;
6610 case R_PPC64_GOT_TLSGD16
:
6611 case R_PPC64_GOT_TLSGD16_LO
:
6612 case R_PPC64_GOT_TLSGD16_HI
:
6613 case R_PPC64_GOT_TLSGD16_HA
:
6614 tls_type
= TLS_TLS
| TLS_GD
;
6617 case R_PPC64_GOT_TPREL16_DS
:
6618 case R_PPC64_GOT_TPREL16_LO_DS
:
6619 case R_PPC64_GOT_TPREL16_HI
:
6620 case R_PPC64_GOT_TPREL16_HA
:
6621 tls_type
= TLS_TLS
| TLS_TPREL
;
6624 case R_PPC64_GOT_DTPREL16_DS
:
6625 case R_PPC64_GOT_DTPREL16_LO_DS
:
6626 case R_PPC64_GOT_DTPREL16_HI
:
6627 case R_PPC64_GOT_DTPREL16_HA
:
6628 tls_type
= TLS_TLS
| TLS_DTPREL
;
6632 case R_PPC64_GOT16_DS
:
6633 case R_PPC64_GOT16_HA
:
6634 case R_PPC64_GOT16_HI
:
6635 case R_PPC64_GOT16_LO
:
6636 case R_PPC64_GOT16_LO_DS
:
6639 struct got_entry
*ent
;
6644 ent
= local_got_ents
[r_symndx
];
6646 for (; ent
!= NULL
; ent
= ent
->next
)
6647 if (ent
->addend
== rel
->r_addend
6648 && ent
->owner
== abfd
6649 && ent
->tls_type
== tls_type
)
6653 if (ent
->got
.refcount
> 0)
6654 ent
->got
.refcount
-= 1;
6658 case R_PPC64_PLT16_HA
:
6659 case R_PPC64_PLT16_HI
:
6660 case R_PPC64_PLT16_LO
:
6664 case R_PPC64_REL14_BRNTAKEN
:
6665 case R_PPC64_REL14_BRTAKEN
:
6669 plt_list
= &h
->plt
.plist
;
6670 else if (local_got_ents
!= NULL
)
6672 struct plt_entry
**local_plt
= (struct plt_entry
**)
6673 (local_got_ents
+ symtab_hdr
->sh_info
);
6674 unsigned char *local_got_tls_masks
= (unsigned char *)
6675 (local_plt
+ symtab_hdr
->sh_info
);
6676 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6677 plt_list
= local_plt
+ r_symndx
;
6681 struct plt_entry
*ent
;
6683 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6684 if (ent
->addend
== rel
->r_addend
)
6686 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6687 ent
->plt
.refcount
-= 1;
6698 /* The maximum size of .sfpr. */
6699 #define SFPR_MAX (218*4)
6701 struct sfpr_def_parms
6703 const char name
[12];
6704 unsigned char lo
, hi
;
6705 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6706 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6709 /* Auto-generate _save*, _rest* functions in .sfpr.
6710 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6714 sfpr_define (struct bfd_link_info
*info
,
6715 const struct sfpr_def_parms
*parm
,
6718 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6720 size_t len
= strlen (parm
->name
);
6721 bfd_boolean writing
= FALSE
;
6727 memcpy (sym
, parm
->name
, len
);
6730 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6732 struct ppc_link_hash_entry
*h
;
6734 sym
[len
+ 0] = i
/ 10 + '0';
6735 sym
[len
+ 1] = i
% 10 + '0';
6736 h
= (struct ppc_link_hash_entry
*)
6737 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6738 if (stub_sec
!= NULL
)
6741 && h
->elf
.root
.type
== bfd_link_hash_defined
6742 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6744 struct elf_link_hash_entry
*s
;
6746 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6747 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6750 if (s
->root
.type
== bfd_link_hash_new
6751 || (s
->root
.type
= bfd_link_hash_defined
6752 && s
->root
.u
.def
.section
== stub_sec
))
6754 s
->root
.type
= bfd_link_hash_defined
;
6755 s
->root
.u
.def
.section
= stub_sec
;
6756 s
->root
.u
.def
.value
= (stub_sec
->size
6757 + h
->elf
.root
.u
.def
.value
);
6760 s
->ref_regular_nonweak
= 1;
6761 s
->forced_local
= 1;
6763 s
->root
.linker_def
= 1;
6771 if (!h
->elf
.def_regular
)
6773 h
->elf
.root
.type
= bfd_link_hash_defined
;
6774 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6775 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6776 h
->elf
.type
= STT_FUNC
;
6777 h
->elf
.def_regular
= 1;
6779 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6781 if (htab
->sfpr
->contents
== NULL
)
6783 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6784 if (htab
->sfpr
->contents
== NULL
)
6791 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6793 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6795 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6796 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6804 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6806 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6811 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6813 p
= savegpr0 (abfd
, p
, r
);
6814 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6816 bfd_put_32 (abfd
, BLR
, p
);
6821 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6823 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6828 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6830 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6832 p
= restgpr0 (abfd
, p
, r
);
6833 bfd_put_32 (abfd
, MTLR_R0
, p
);
6837 p
= restgpr0 (abfd
, p
, 30);
6838 p
= restgpr0 (abfd
, p
, 31);
6840 bfd_put_32 (abfd
, BLR
, p
);
6845 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6847 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6852 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6854 p
= savegpr1 (abfd
, p
, r
);
6855 bfd_put_32 (abfd
, BLR
, p
);
6860 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6862 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6867 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6869 p
= restgpr1 (abfd
, p
, r
);
6870 bfd_put_32 (abfd
, BLR
, p
);
6875 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6877 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6882 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6884 p
= savefpr (abfd
, p
, r
);
6885 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6887 bfd_put_32 (abfd
, BLR
, p
);
6892 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6894 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6899 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6901 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6903 p
= restfpr (abfd
, p
, r
);
6904 bfd_put_32 (abfd
, MTLR_R0
, p
);
6908 p
= restfpr (abfd
, p
, 30);
6909 p
= restfpr (abfd
, p
, 31);
6911 bfd_put_32 (abfd
, BLR
, p
);
6916 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6918 p
= savefpr (abfd
, p
, r
);
6919 bfd_put_32 (abfd
, BLR
, p
);
6924 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6926 p
= restfpr (abfd
, p
, r
);
6927 bfd_put_32 (abfd
, BLR
, p
);
6932 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6934 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6936 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6941 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6943 p
= savevr (abfd
, p
, r
);
6944 bfd_put_32 (abfd
, BLR
, p
);
6949 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6951 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6953 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6958 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6960 p
= restvr (abfd
, p
, r
);
6961 bfd_put_32 (abfd
, BLR
, p
);
6965 /* Called via elf_link_hash_traverse to transfer dynamic linking
6966 information on function code symbol entries to their corresponding
6967 function descriptor symbol entries. */
6970 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6972 struct bfd_link_info
*info
;
6973 struct ppc_link_hash_table
*htab
;
6974 struct ppc_link_hash_entry
*fh
;
6975 struct ppc_link_hash_entry
*fdh
;
6976 bfd_boolean force_local
;
6978 fh
= (struct ppc_link_hash_entry
*) h
;
6979 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6985 if (fh
->elf
.root
.root
.string
[0] != '.'
6986 || fh
->elf
.root
.root
.string
[1] == '\0')
6990 htab
= ppc_hash_table (info
);
6994 /* Find the corresponding function descriptor symbol. */
6995 fdh
= lookup_fdh (fh
, htab
);
6997 /* Resolve undefined references to dot-symbols as the value
6998 in the function descriptor, if we have one in a regular object.
6999 This is to satisfy cases like ".quad .foo". Calls to functions
7000 in dynamic objects are handled elsewhere. */
7001 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7002 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7003 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7004 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7005 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7006 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7007 fdh
->elf
.root
.u
.def
.value
,
7008 &fh
->elf
.root
.u
.def
.section
,
7009 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7011 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7012 fh
->elf
.forced_local
= 1;
7013 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7014 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7017 if (!fh
->elf
.dynamic
)
7019 struct plt_entry
*ent
;
7021 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7022 if (ent
->plt
.refcount
> 0)
7028 /* Create a descriptor as undefined if necessary. */
7030 && !bfd_link_executable (info
)
7031 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7032 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7034 fdh
= make_fdh (info
, fh
);
7039 /* We can't support overriding of symbols on a fake descriptor. */
7042 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7043 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7044 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7046 /* Transfer dynamic linking information to the function descriptor. */
7049 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7050 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7051 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7052 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7053 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7054 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7055 || fh
->elf
.type
== STT_FUNC
7056 || fh
->elf
.type
== STT_GNU_IFUNC
);
7057 move_plt_plist (fh
, fdh
);
7059 if (!fdh
->elf
.forced_local
7060 && fh
->elf
.dynindx
!= -1)
7061 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7065 /* Now that the info is on the function descriptor, clear the
7066 function code sym info. Any function code syms for which we
7067 don't have a definition in a regular file, we force local.
7068 This prevents a shared library from exporting syms that have
7069 been imported from another library. Function code syms that
7070 are really in the library we must leave global to prevent the
7071 linker dragging in a definition from a static library. */
7072 force_local
= (!fh
->elf
.def_regular
7074 || !fdh
->elf
.def_regular
7075 || fdh
->elf
.forced_local
);
7076 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7081 static const struct sfpr_def_parms save_res_funcs
[] =
7083 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7084 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7085 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7086 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7087 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7088 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7089 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7090 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7091 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7092 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7093 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7094 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7097 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7098 this hook to a) provide some gcc support functions, and b) transfer
7099 dynamic linking information gathered so far on function code symbol
7100 entries, to their corresponding function descriptor symbol entries. */
7103 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7104 struct bfd_link_info
*info
)
7106 struct ppc_link_hash_table
*htab
;
7108 htab
= ppc_hash_table (info
);
7112 /* Provide any missing _save* and _rest* functions. */
7113 if (htab
->sfpr
!= NULL
)
7117 htab
->sfpr
->size
= 0;
7118 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7119 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7121 if (htab
->sfpr
->size
== 0)
7122 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7125 if (bfd_link_relocatable (info
))
7128 if (htab
->elf
.hgot
!= NULL
)
7130 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7131 /* Make .TOC. defined so as to prevent it being made dynamic.
7132 The wrong value here is fixed later in ppc64_elf_set_toc. */
7133 if (!htab
->elf
.hgot
->def_regular
7134 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7136 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7137 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7138 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7139 htab
->elf
.hgot
->def_regular
= 1;
7140 htab
->elf
.hgot
->root
.linker_def
= 1;
7142 htab
->elf
.hgot
->type
= STT_OBJECT
;
7143 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7147 if (htab
->need_func_desc_adj
)
7149 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7150 htab
->need_func_desc_adj
= 0;
7156 /* Return true if we have dynamic relocs against H that apply to
7157 read-only sections. */
7160 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7162 struct ppc_link_hash_entry
*eh
;
7163 struct elf_dyn_relocs
*p
;
7165 eh
= (struct ppc_link_hash_entry
*) h
;
7166 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7168 asection
*s
= p
->sec
->output_section
;
7170 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7176 /* Return true if we have dynamic relocs against H or any of its weak
7177 aliases, that apply to read-only sections. */
7180 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7182 struct ppc_link_hash_entry
*eh
;
7184 eh
= (struct ppc_link_hash_entry
*) h
;
7187 if (readonly_dynrelocs (&eh
->elf
))
7190 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7195 /* Return whether EH has pc-relative dynamic relocs. */
7198 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7200 struct elf_dyn_relocs
*p
;
7202 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7203 if (p
->pc_count
!= 0)
7208 /* Return true if a global entry stub will be created for H. Valid
7209 for ELFv2 before plt entries have been allocated. */
7212 global_entry_stub (struct elf_link_hash_entry
*h
)
7214 struct plt_entry
*pent
;
7216 if (!h
->pointer_equality_needed
7220 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7221 if (pent
->plt
.refcount
> 0
7222 && pent
->addend
== 0)
7228 /* Adjust a symbol defined by a dynamic object and referenced by a
7229 regular object. The current definition is in some section of the
7230 dynamic object, but we're not including those sections. We have to
7231 change the definition to something the rest of the link can
7235 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7236 struct elf_link_hash_entry
*h
)
7238 struct ppc_link_hash_table
*htab
;
7241 htab
= ppc_hash_table (info
);
7245 /* Deal with function syms. */
7246 if (h
->type
== STT_FUNC
7247 || h
->type
== STT_GNU_IFUNC
7250 /* Clear procedure linkage table information for any symbol that
7251 won't need a .plt entry. */
7252 struct plt_entry
*ent
;
7253 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7254 if (ent
->plt
.refcount
> 0)
7257 || (h
->type
!= STT_GNU_IFUNC
7258 && (SYMBOL_CALLS_LOCAL (info
, h
)
7259 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7260 && h
->root
.type
== bfd_link_hash_undefweak
)))
7261 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7263 h
->plt
.plist
= NULL
;
7265 h
->pointer_equality_needed
= 0;
7267 else if (abiversion (info
->output_bfd
) >= 2)
7269 /* Taking a function's address in a read/write section
7270 doesn't require us to define the function symbol in the
7271 executable on a global entry stub. A dynamic reloc can
7272 be used instead. The reason we prefer a few more dynamic
7273 relocs is that calling via a global entry stub costs a
7274 few more instructions, and pointer_equality_needed causes
7275 extra work in ld.so when resolving these symbols. */
7276 if (global_entry_stub (h
)
7277 && !alias_readonly_dynrelocs (h
))
7279 h
->pointer_equality_needed
= 0;
7280 /* After adjust_dynamic_symbol, non_got_ref set in
7281 the non-pic case means that dyn_relocs for this
7282 symbol should be discarded. */
7286 /* If making a plt entry, then we don't need copy relocs. */
7291 h
->plt
.plist
= NULL
;
7293 /* If this is a weak symbol, and there is a real definition, the
7294 processor independent code will have arranged for us to see the
7295 real definition first, and we can just use the same value. */
7296 if (h
->u
.weakdef
!= NULL
)
7298 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7299 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7300 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7301 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7302 if (ELIMINATE_COPY_RELOCS
)
7303 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7307 /* If we are creating a shared library, we must presume that the
7308 only references to the symbol are via the global offset table.
7309 For such cases we need not do anything here; the relocations will
7310 be handled correctly by relocate_section. */
7311 if (bfd_link_pic (info
))
7314 /* If there are no references to this symbol that do not use the
7315 GOT, we don't need to generate a copy reloc. */
7316 if (!h
->non_got_ref
)
7319 /* Don't generate a copy reloc for symbols defined in the executable. */
7320 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7322 /* If -z nocopyreloc was given, don't generate them either. */
7323 || info
->nocopyreloc
7325 /* If we didn't find any dynamic relocs in read-only sections, then
7326 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7327 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7329 /* Protected variables do not work with .dynbss. The copy in
7330 .dynbss won't be used by the shared library with the protected
7331 definition for the variable. Text relocations are preferable
7332 to an incorrect program. */
7333 || h
->protected_def
)
7339 if (h
->plt
.plist
!= NULL
)
7341 /* We should never get here, but unfortunately there are versions
7342 of gcc out there that improperly (for this ABI) put initialized
7343 function pointers, vtable refs and suchlike in read-only
7344 sections. Allow them to proceed, but warn that this might
7345 break at runtime. */
7346 info
->callbacks
->einfo
7347 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7348 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7349 h
->root
.root
.string
);
7352 /* This is a reference to a symbol defined by a dynamic object which
7353 is not a function. */
7355 /* We must allocate the symbol in our .dynbss section, which will
7356 become part of the .bss section of the executable. There will be
7357 an entry for this symbol in the .dynsym section. The dynamic
7358 object will contain position independent code, so all references
7359 from the dynamic object to this symbol will go through the global
7360 offset table. The dynamic linker will use the .dynsym entry to
7361 determine the address it must put in the global offset table, so
7362 both the dynamic object and the regular object will refer to the
7363 same memory location for the variable. */
7365 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7366 to copy the initial value out of the dynamic object and into the
7367 runtime process image. We need to remember the offset into the
7368 .rela.bss section we are going to use. */
7369 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7371 s
= htab
->elf
.sdynrelro
;
7372 srel
= htab
->elf
.sreldynrelro
;
7376 s
= htab
->elf
.sdynbss
;
7377 srel
= htab
->elf
.srelbss
;
7379 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7381 srel
->size
+= sizeof (Elf64_External_Rela
);
7385 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7388 /* If given a function descriptor symbol, hide both the function code
7389 sym and the descriptor. */
7391 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7392 struct elf_link_hash_entry
*h
,
7393 bfd_boolean force_local
)
7395 struct ppc_link_hash_entry
*eh
;
7396 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7398 eh
= (struct ppc_link_hash_entry
*) h
;
7399 if (eh
->is_func_descriptor
)
7401 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7406 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7409 /* We aren't supposed to use alloca in BFD because on
7410 systems which do not have alloca the version in libiberty
7411 calls xmalloc, which might cause the program to crash
7412 when it runs out of memory. This function doesn't have a
7413 return status, so there's no way to gracefully return an
7414 error. So cheat. We know that string[-1] can be safely
7415 accessed; It's either a string in an ELF string table,
7416 or allocated in an objalloc structure. */
7418 p
= eh
->elf
.root
.root
.string
- 1;
7421 fh
= (struct ppc_link_hash_entry
*)
7422 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7425 /* Unfortunately, if it so happens that the string we were
7426 looking for was allocated immediately before this string,
7427 then we overwrote the string terminator. That's the only
7428 reason the lookup should fail. */
7431 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7432 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7434 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7435 fh
= (struct ppc_link_hash_entry
*)
7436 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7445 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7450 get_sym_h (struct elf_link_hash_entry
**hp
,
7451 Elf_Internal_Sym
**symp
,
7453 unsigned char **tls_maskp
,
7454 Elf_Internal_Sym
**locsymsp
,
7455 unsigned long r_symndx
,
7458 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7460 if (r_symndx
>= symtab_hdr
->sh_info
)
7462 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7463 struct elf_link_hash_entry
*h
;
7465 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7466 h
= elf_follow_link (h
);
7474 if (symsecp
!= NULL
)
7476 asection
*symsec
= NULL
;
7477 if (h
->root
.type
== bfd_link_hash_defined
7478 || h
->root
.type
== bfd_link_hash_defweak
)
7479 symsec
= h
->root
.u
.def
.section
;
7483 if (tls_maskp
!= NULL
)
7485 struct ppc_link_hash_entry
*eh
;
7487 eh
= (struct ppc_link_hash_entry
*) h
;
7488 *tls_maskp
= &eh
->tls_mask
;
7493 Elf_Internal_Sym
*sym
;
7494 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7496 if (locsyms
== NULL
)
7498 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7499 if (locsyms
== NULL
)
7500 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7501 symtab_hdr
->sh_info
,
7502 0, NULL
, NULL
, NULL
);
7503 if (locsyms
== NULL
)
7505 *locsymsp
= locsyms
;
7507 sym
= locsyms
+ r_symndx
;
7515 if (symsecp
!= NULL
)
7516 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7518 if (tls_maskp
!= NULL
)
7520 struct got_entry
**lgot_ents
;
7521 unsigned char *tls_mask
;
7524 lgot_ents
= elf_local_got_ents (ibfd
);
7525 if (lgot_ents
!= NULL
)
7527 struct plt_entry
**local_plt
= (struct plt_entry
**)
7528 (lgot_ents
+ symtab_hdr
->sh_info
);
7529 unsigned char *lgot_masks
= (unsigned char *)
7530 (local_plt
+ symtab_hdr
->sh_info
);
7531 tls_mask
= &lgot_masks
[r_symndx
];
7533 *tls_maskp
= tls_mask
;
7539 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7540 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7541 type suitable for optimization, and 1 otherwise. */
7544 get_tls_mask (unsigned char **tls_maskp
,
7545 unsigned long *toc_symndx
,
7546 bfd_vma
*toc_addend
,
7547 Elf_Internal_Sym
**locsymsp
,
7548 const Elf_Internal_Rela
*rel
,
7551 unsigned long r_symndx
;
7553 struct elf_link_hash_entry
*h
;
7554 Elf_Internal_Sym
*sym
;
7558 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7559 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7562 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7564 || ppc64_elf_section_data (sec
) == NULL
7565 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7568 /* Look inside a TOC section too. */
7571 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7572 off
= h
->root
.u
.def
.value
;
7575 off
= sym
->st_value
;
7576 off
+= rel
->r_addend
;
7577 BFD_ASSERT (off
% 8 == 0);
7578 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7579 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7580 if (toc_symndx
!= NULL
)
7581 *toc_symndx
= r_symndx
;
7582 if (toc_addend
!= NULL
)
7583 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7584 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7586 if ((h
== NULL
|| is_static_defined (h
))
7587 && (next_r
== -1 || next_r
== -2))
7592 /* Find (or create) an entry in the tocsave hash table. */
7594 static struct tocsave_entry
*
7595 tocsave_find (struct ppc_link_hash_table
*htab
,
7596 enum insert_option insert
,
7597 Elf_Internal_Sym
**local_syms
,
7598 const Elf_Internal_Rela
*irela
,
7601 unsigned long r_indx
;
7602 struct elf_link_hash_entry
*h
;
7603 Elf_Internal_Sym
*sym
;
7604 struct tocsave_entry ent
, *p
;
7606 struct tocsave_entry
**slot
;
7608 r_indx
= ELF64_R_SYM (irela
->r_info
);
7609 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7611 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7614 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7619 ent
.offset
= h
->root
.u
.def
.value
;
7621 ent
.offset
= sym
->st_value
;
7622 ent
.offset
+= irela
->r_addend
;
7624 hash
= tocsave_htab_hash (&ent
);
7625 slot
= ((struct tocsave_entry
**)
7626 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7632 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7641 /* Adjust all global syms defined in opd sections. In gcc generated
7642 code for the old ABI, these will already have been done. */
7645 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7647 struct ppc_link_hash_entry
*eh
;
7649 struct _opd_sec_data
*opd
;
7651 if (h
->root
.type
== bfd_link_hash_indirect
)
7654 if (h
->root
.type
!= bfd_link_hash_defined
7655 && h
->root
.type
!= bfd_link_hash_defweak
)
7658 eh
= (struct ppc_link_hash_entry
*) h
;
7659 if (eh
->adjust_done
)
7662 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7663 opd
= get_opd_info (sym_sec
);
7664 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7666 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7669 /* This entry has been deleted. */
7670 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7673 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7674 if (discarded_section (dsec
))
7676 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7680 eh
->elf
.root
.u
.def
.value
= 0;
7681 eh
->elf
.root
.u
.def
.section
= dsec
;
7684 eh
->elf
.root
.u
.def
.value
+= adjust
;
7685 eh
->adjust_done
= 1;
7690 /* Handles decrementing dynamic reloc counts for the reloc specified by
7691 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7692 have already been determined. */
7695 dec_dynrel_count (bfd_vma r_info
,
7697 struct bfd_link_info
*info
,
7698 Elf_Internal_Sym
**local_syms
,
7699 struct elf_link_hash_entry
*h
,
7700 Elf_Internal_Sym
*sym
)
7702 enum elf_ppc64_reloc_type r_type
;
7703 asection
*sym_sec
= NULL
;
7705 /* Can this reloc be dynamic? This switch, and later tests here
7706 should be kept in sync with the code in check_relocs. */
7707 r_type
= ELF64_R_TYPE (r_info
);
7713 case R_PPC64_TPREL16
:
7714 case R_PPC64_TPREL16_LO
:
7715 case R_PPC64_TPREL16_HI
:
7716 case R_PPC64_TPREL16_HA
:
7717 case R_PPC64_TPREL16_DS
:
7718 case R_PPC64_TPREL16_LO_DS
:
7719 case R_PPC64_TPREL16_HIGH
:
7720 case R_PPC64_TPREL16_HIGHA
:
7721 case R_PPC64_TPREL16_HIGHER
:
7722 case R_PPC64_TPREL16_HIGHERA
:
7723 case R_PPC64_TPREL16_HIGHEST
:
7724 case R_PPC64_TPREL16_HIGHESTA
:
7725 if (!bfd_link_pic (info
))
7728 case R_PPC64_TPREL64
:
7729 case R_PPC64_DTPMOD64
:
7730 case R_PPC64_DTPREL64
:
7731 case R_PPC64_ADDR64
:
7735 case R_PPC64_ADDR14
:
7736 case R_PPC64_ADDR14_BRNTAKEN
:
7737 case R_PPC64_ADDR14_BRTAKEN
:
7738 case R_PPC64_ADDR16
:
7739 case R_PPC64_ADDR16_DS
:
7740 case R_PPC64_ADDR16_HA
:
7741 case R_PPC64_ADDR16_HI
:
7742 case R_PPC64_ADDR16_HIGH
:
7743 case R_PPC64_ADDR16_HIGHA
:
7744 case R_PPC64_ADDR16_HIGHER
:
7745 case R_PPC64_ADDR16_HIGHERA
:
7746 case R_PPC64_ADDR16_HIGHEST
:
7747 case R_PPC64_ADDR16_HIGHESTA
:
7748 case R_PPC64_ADDR16_LO
:
7749 case R_PPC64_ADDR16_LO_DS
:
7750 case R_PPC64_ADDR24
:
7751 case R_PPC64_ADDR32
:
7752 case R_PPC64_UADDR16
:
7753 case R_PPC64_UADDR32
:
7754 case R_PPC64_UADDR64
:
7759 if (local_syms
!= NULL
)
7761 unsigned long r_symndx
;
7762 bfd
*ibfd
= sec
->owner
;
7764 r_symndx
= ELF64_R_SYM (r_info
);
7765 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7769 if ((bfd_link_pic (info
)
7770 && (must_be_dyn_reloc (info
, r_type
)
7772 && (!SYMBOLIC_BIND (info
, h
)
7773 || h
->root
.type
== bfd_link_hash_defweak
7774 || !h
->def_regular
))))
7775 || (ELIMINATE_COPY_RELOCS
7776 && !bfd_link_pic (info
)
7778 && (h
->root
.type
== bfd_link_hash_defweak
7779 || !h
->def_regular
)))
7786 struct elf_dyn_relocs
*p
;
7787 struct elf_dyn_relocs
**pp
;
7788 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7790 /* elf_gc_sweep may have already removed all dyn relocs associated
7791 with local syms for a given section. Also, symbol flags are
7792 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7793 report a dynreloc miscount. */
7794 if (*pp
== NULL
&& info
->gc_sections
)
7797 while ((p
= *pp
) != NULL
)
7801 if (!must_be_dyn_reloc (info
, r_type
))
7813 struct ppc_dyn_relocs
*p
;
7814 struct ppc_dyn_relocs
**pp
;
7816 bfd_boolean is_ifunc
;
7818 if (local_syms
== NULL
)
7819 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7820 if (sym_sec
== NULL
)
7823 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7824 pp
= (struct ppc_dyn_relocs
**) vpp
;
7826 if (*pp
== NULL
&& info
->gc_sections
)
7829 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7830 while ((p
= *pp
) != NULL
)
7832 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7843 /* xgettext:c-format */
7844 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7846 bfd_set_error (bfd_error_bad_value
);
7850 /* Remove unused Official Procedure Descriptor entries. Currently we
7851 only remove those associated with functions in discarded link-once
7852 sections, or weakly defined functions that have been overridden. It
7853 would be possible to remove many more entries for statically linked
7857 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7860 bfd_boolean some_edited
= FALSE
;
7861 asection
*need_pad
= NULL
;
7862 struct ppc_link_hash_table
*htab
;
7864 htab
= ppc_hash_table (info
);
7868 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7871 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7872 Elf_Internal_Shdr
*symtab_hdr
;
7873 Elf_Internal_Sym
*local_syms
;
7874 struct _opd_sec_data
*opd
;
7875 bfd_boolean need_edit
, add_aux_fields
, broken
;
7876 bfd_size_type cnt_16b
= 0;
7878 if (!is_ppc64_elf (ibfd
))
7881 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7882 if (sec
== NULL
|| sec
->size
== 0)
7885 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7888 if (sec
->output_section
== bfd_abs_section_ptr
)
7891 /* Look through the section relocs. */
7892 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7896 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7898 /* Read the relocations. */
7899 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7901 if (relstart
== NULL
)
7904 /* First run through the relocs to check they are sane, and to
7905 determine whether we need to edit this opd section. */
7909 relend
= relstart
+ sec
->reloc_count
;
7910 for (rel
= relstart
; rel
< relend
; )
7912 enum elf_ppc64_reloc_type r_type
;
7913 unsigned long r_symndx
;
7915 struct elf_link_hash_entry
*h
;
7916 Elf_Internal_Sym
*sym
;
7919 /* .opd contains an array of 16 or 24 byte entries. We're
7920 only interested in the reloc pointing to a function entry
7922 offset
= rel
->r_offset
;
7923 if (rel
+ 1 == relend
7924 || rel
[1].r_offset
!= offset
+ 8)
7926 /* If someone messes with .opd alignment then after a
7927 "ld -r" we might have padding in the middle of .opd.
7928 Also, there's nothing to prevent someone putting
7929 something silly in .opd with the assembler. No .opd
7930 optimization for them! */
7933 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7938 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7939 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7942 /* xgettext:c-format */
7943 (_("%B: unexpected reloc type %u in .opd section"),
7949 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7950 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7954 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7956 const char *sym_name
;
7958 sym_name
= h
->root
.root
.string
;
7960 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7964 /* xgettext:c-format */
7965 (_("%B: undefined sym `%s' in .opd section"),
7971 /* opd entries are always for functions defined in the
7972 current input bfd. If the symbol isn't defined in the
7973 input bfd, then we won't be using the function in this
7974 bfd; It must be defined in a linkonce section in another
7975 bfd, or is weak. It's also possible that we are
7976 discarding the function due to a linker script /DISCARD/,
7977 which we test for via the output_section. */
7978 if (sym_sec
->owner
!= ibfd
7979 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7983 if (rel
+ 1 == relend
7984 || (rel
+ 2 < relend
7985 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7990 if (sec
->size
== offset
+ 24)
7995 if (sec
->size
== offset
+ 16)
8002 else if (rel
+ 1 < relend
8003 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8004 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8006 if (rel
[0].r_offset
== offset
+ 16)
8008 else if (rel
[0].r_offset
!= offset
+ 24)
8015 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8017 if (!broken
&& (need_edit
|| add_aux_fields
))
8019 Elf_Internal_Rela
*write_rel
;
8020 Elf_Internal_Shdr
*rel_hdr
;
8021 bfd_byte
*rptr
, *wptr
;
8022 bfd_byte
*new_contents
;
8025 new_contents
= NULL
;
8026 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8027 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8028 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8029 if (opd
->adjust
== NULL
)
8031 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8033 /* This seems a waste of time as input .opd sections are all
8034 zeros as generated by gcc, but I suppose there's no reason
8035 this will always be so. We might start putting something in
8036 the third word of .opd entries. */
8037 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8040 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8045 if (local_syms
!= NULL
8046 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8048 if (elf_section_data (sec
)->relocs
!= relstart
)
8052 sec
->contents
= loc
;
8053 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8056 elf_section_data (sec
)->relocs
= relstart
;
8058 new_contents
= sec
->contents
;
8061 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8062 if (new_contents
== NULL
)
8066 wptr
= new_contents
;
8067 rptr
= sec
->contents
;
8068 write_rel
= relstart
;
8069 for (rel
= relstart
; rel
< relend
; )
8071 unsigned long r_symndx
;
8073 struct elf_link_hash_entry
*h
;
8074 struct ppc_link_hash_entry
*fdh
= NULL
;
8075 Elf_Internal_Sym
*sym
;
8077 Elf_Internal_Rela
*next_rel
;
8080 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8081 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8086 if (next_rel
+ 1 == relend
8087 || (next_rel
+ 2 < relend
8088 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8091 /* See if the .opd entry is full 24 byte or
8092 16 byte (with fd_aux entry overlapped with next
8095 if (next_rel
== relend
)
8097 if (sec
->size
== rel
->r_offset
+ 16)
8100 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8104 && h
->root
.root
.string
[0] == '.')
8106 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8109 fdh
= ppc_follow_link (fdh
);
8110 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8111 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8116 skip
= (sym_sec
->owner
!= ibfd
8117 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8120 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8122 /* Arrange for the function descriptor sym
8124 fdh
->elf
.root
.u
.def
.value
= 0;
8125 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8127 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8129 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8134 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8138 if (++rel
== next_rel
)
8141 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8142 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8149 /* We'll be keeping this opd entry. */
8154 /* Redefine the function descriptor symbol to
8155 this location in the opd section. It is
8156 necessary to update the value here rather
8157 than using an array of adjustments as we do
8158 for local symbols, because various places
8159 in the generic ELF code use the value
8160 stored in u.def.value. */
8161 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8162 fdh
->adjust_done
= 1;
8165 /* Local syms are a bit tricky. We could
8166 tweak them as they can be cached, but
8167 we'd need to look through the local syms
8168 for the function descriptor sym which we
8169 don't have at the moment. So keep an
8170 array of adjustments. */
8171 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8172 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8175 memcpy (wptr
, rptr
, opd_ent_size
);
8176 wptr
+= opd_ent_size
;
8177 if (add_aux_fields
&& opd_ent_size
== 16)
8179 memset (wptr
, '\0', 8);
8183 /* We need to adjust any reloc offsets to point to the
8185 for ( ; rel
!= next_rel
; ++rel
)
8187 rel
->r_offset
+= adjust
;
8188 if (write_rel
!= rel
)
8189 memcpy (write_rel
, rel
, sizeof (*rel
));
8194 rptr
+= opd_ent_size
;
8197 sec
->size
= wptr
- new_contents
;
8198 sec
->reloc_count
= write_rel
- relstart
;
8201 free (sec
->contents
);
8202 sec
->contents
= new_contents
;
8205 /* Fudge the header size too, as this is used later in
8206 elf_bfd_final_link if we are emitting relocs. */
8207 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8208 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8211 else if (elf_section_data (sec
)->relocs
!= relstart
)
8214 if (local_syms
!= NULL
8215 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8217 if (!info
->keep_memory
)
8220 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8225 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8227 /* If we are doing a final link and the last .opd entry is just 16 byte
8228 long, add a 8 byte padding after it. */
8229 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8233 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8235 BFD_ASSERT (need_pad
->size
> 0);
8237 p
= bfd_malloc (need_pad
->size
+ 8);
8241 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8242 p
, 0, need_pad
->size
))
8245 need_pad
->contents
= p
;
8246 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8250 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8254 need_pad
->contents
= p
;
8257 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8258 need_pad
->size
+= 8;
8264 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8267 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8269 struct ppc_link_hash_table
*htab
;
8271 htab
= ppc_hash_table (info
);
8275 if (abiversion (info
->output_bfd
) == 1)
8278 if (htab
->params
->no_multi_toc
)
8279 htab
->do_multi_toc
= 0;
8280 else if (!htab
->do_multi_toc
)
8281 htab
->params
->no_multi_toc
= 1;
8283 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8284 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8285 FALSE
, FALSE
, TRUE
));
8286 /* Move dynamic linking info to the function descriptor sym. */
8287 if (htab
->tls_get_addr
!= NULL
)
8288 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8289 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8290 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8291 FALSE
, FALSE
, TRUE
));
8292 if (htab
->params
->tls_get_addr_opt
)
8294 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8296 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8297 FALSE
, FALSE
, TRUE
);
8299 func_desc_adjust (opt
, info
);
8300 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8301 FALSE
, FALSE
, TRUE
);
8303 && (opt_fd
->root
.type
== bfd_link_hash_defined
8304 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8306 /* If glibc supports an optimized __tls_get_addr call stub,
8307 signalled by the presence of __tls_get_addr_opt, and we'll
8308 be calling __tls_get_addr via a plt call stub, then
8309 make __tls_get_addr point to __tls_get_addr_opt. */
8310 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8311 if (htab
->elf
.dynamic_sections_created
8313 && (tga_fd
->type
== STT_FUNC
8314 || tga_fd
->needs_plt
)
8315 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8316 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8317 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8319 struct plt_entry
*ent
;
8321 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8322 if (ent
->plt
.refcount
> 0)
8326 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8327 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8328 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8329 opt_fd
->forced_local
= 0;
8330 if (opt_fd
->dynindx
!= -1)
8332 /* Use __tls_get_addr_opt in dynamic relocations. */
8333 opt_fd
->dynindx
= -1;
8334 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8335 opt_fd
->dynstr_index
);
8336 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8339 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8340 tga
= &htab
->tls_get_addr
->elf
;
8341 if (opt
!= NULL
&& tga
!= NULL
)
8343 tga
->root
.type
= bfd_link_hash_indirect
;
8344 tga
->root
.u
.i
.link
= &opt
->root
;
8345 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8346 opt
->forced_local
= 0;
8347 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8349 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8351 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8352 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8353 if (htab
->tls_get_addr
!= NULL
)
8355 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8356 htab
->tls_get_addr
->is_func
= 1;
8361 else if (htab
->params
->tls_get_addr_opt
< 0)
8362 htab
->params
->tls_get_addr_opt
= 0;
8364 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8367 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8371 branch_reloc_hash_match (const bfd
*ibfd
,
8372 const Elf_Internal_Rela
*rel
,
8373 const struct ppc_link_hash_entry
*hash1
,
8374 const struct ppc_link_hash_entry
*hash2
)
8376 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8377 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8378 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8380 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8382 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8383 struct elf_link_hash_entry
*h
;
8385 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8386 h
= elf_follow_link (h
);
8387 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8393 /* Run through all the TLS relocs looking for optimization
8394 opportunities. The linker has been hacked (see ppc64elf.em) to do
8395 a preliminary section layout so that we know the TLS segment
8396 offsets. We can't optimize earlier because some optimizations need
8397 to know the tp offset, and we need to optimize before allocating
8398 dynamic relocations. */
8401 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8405 struct ppc_link_hash_table
*htab
;
8406 unsigned char *toc_ref
;
8409 if (!bfd_link_executable (info
))
8412 htab
= ppc_hash_table (info
);
8416 /* Make two passes over the relocs. On the first pass, mark toc
8417 entries involved with tls relocs, and check that tls relocs
8418 involved in setting up a tls_get_addr call are indeed followed by
8419 such a call. If they are not, we can't do any tls optimization.
8420 On the second pass twiddle tls_mask flags to notify
8421 relocate_section that optimization can be done, and adjust got
8422 and plt refcounts. */
8424 for (pass
= 0; pass
< 2; ++pass
)
8425 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8427 Elf_Internal_Sym
*locsyms
= NULL
;
8428 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8430 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8431 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8433 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8434 bfd_boolean found_tls_get_addr_arg
= 0;
8436 /* Read the relocations. */
8437 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8439 if (relstart
== NULL
)
8445 relend
= relstart
+ sec
->reloc_count
;
8446 for (rel
= relstart
; rel
< relend
; rel
++)
8448 enum elf_ppc64_reloc_type r_type
;
8449 unsigned long r_symndx
;
8450 struct elf_link_hash_entry
*h
;
8451 Elf_Internal_Sym
*sym
;
8453 unsigned char *tls_mask
;
8454 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8456 bfd_boolean ok_tprel
, is_local
;
8457 long toc_ref_index
= 0;
8458 int expecting_tls_get_addr
= 0;
8459 bfd_boolean ret
= FALSE
;
8461 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8462 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8466 if (elf_section_data (sec
)->relocs
!= relstart
)
8468 if (toc_ref
!= NULL
)
8471 && (elf_symtab_hdr (ibfd
).contents
8472 != (unsigned char *) locsyms
))
8479 if (h
->root
.type
== bfd_link_hash_defined
8480 || h
->root
.type
== bfd_link_hash_defweak
)
8481 value
= h
->root
.u
.def
.value
;
8482 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8486 found_tls_get_addr_arg
= 0;
8491 /* Symbols referenced by TLS relocs must be of type
8492 STT_TLS. So no need for .opd local sym adjust. */
8493 value
= sym
->st_value
;
8502 && h
->root
.type
== bfd_link_hash_undefweak
)
8504 else if (sym_sec
!= NULL
8505 && sym_sec
->output_section
!= NULL
)
8507 value
+= sym_sec
->output_offset
;
8508 value
+= sym_sec
->output_section
->vma
;
8509 value
-= htab
->elf
.tls_sec
->vma
;
8510 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8511 < (bfd_vma
) 1 << 32);
8515 r_type
= ELF64_R_TYPE (rel
->r_info
);
8516 /* If this section has old-style __tls_get_addr calls
8517 without marker relocs, then check that each
8518 __tls_get_addr call reloc is preceded by a reloc
8519 that conceivably belongs to the __tls_get_addr arg
8520 setup insn. If we don't find matching arg setup
8521 relocs, don't do any tls optimization. */
8523 && sec
->has_tls_get_addr_call
8525 && (h
== &htab
->tls_get_addr
->elf
8526 || h
== &htab
->tls_get_addr_fd
->elf
)
8527 && !found_tls_get_addr_arg
8528 && is_branch_reloc (r_type
))
8530 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8531 "TLS optimization disabled\n"),
8532 ibfd
, sec
, rel
->r_offset
);
8537 found_tls_get_addr_arg
= 0;
8540 case R_PPC64_GOT_TLSLD16
:
8541 case R_PPC64_GOT_TLSLD16_LO
:
8542 expecting_tls_get_addr
= 1;
8543 found_tls_get_addr_arg
= 1;
8546 case R_PPC64_GOT_TLSLD16_HI
:
8547 case R_PPC64_GOT_TLSLD16_HA
:
8548 /* These relocs should never be against a symbol
8549 defined in a shared lib. Leave them alone if
8550 that turns out to be the case. */
8557 tls_type
= TLS_TLS
| TLS_LD
;
8560 case R_PPC64_GOT_TLSGD16
:
8561 case R_PPC64_GOT_TLSGD16_LO
:
8562 expecting_tls_get_addr
= 1;
8563 found_tls_get_addr_arg
= 1;
8566 case R_PPC64_GOT_TLSGD16_HI
:
8567 case R_PPC64_GOT_TLSGD16_HA
:
8573 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8575 tls_type
= TLS_TLS
| TLS_GD
;
8578 case R_PPC64_GOT_TPREL16_DS
:
8579 case R_PPC64_GOT_TPREL16_LO_DS
:
8580 case R_PPC64_GOT_TPREL16_HI
:
8581 case R_PPC64_GOT_TPREL16_HA
:
8586 tls_clear
= TLS_TPREL
;
8587 tls_type
= TLS_TLS
| TLS_TPREL
;
8594 found_tls_get_addr_arg
= 1;
8599 case R_PPC64_TOC16_LO
:
8600 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8603 /* Mark this toc entry as referenced by a TLS
8604 code sequence. We can do that now in the
8605 case of R_PPC64_TLS, and after checking for
8606 tls_get_addr for the TOC16 relocs. */
8607 if (toc_ref
== NULL
)
8608 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8609 if (toc_ref
== NULL
)
8613 value
= h
->root
.u
.def
.value
;
8615 value
= sym
->st_value
;
8616 value
+= rel
->r_addend
;
8619 BFD_ASSERT (value
< toc
->size
8620 && toc
->output_offset
% 8 == 0);
8621 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8622 if (r_type
== R_PPC64_TLS
8623 || r_type
== R_PPC64_TLSGD
8624 || r_type
== R_PPC64_TLSLD
)
8626 toc_ref
[toc_ref_index
] = 1;
8630 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8635 expecting_tls_get_addr
= 2;
8638 case R_PPC64_TPREL64
:
8642 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8647 tls_set
= TLS_EXPLICIT
;
8648 tls_clear
= TLS_TPREL
;
8653 case R_PPC64_DTPMOD64
:
8657 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8659 if (rel
+ 1 < relend
8661 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8662 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8666 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8669 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8678 tls_set
= TLS_EXPLICIT
;
8689 if (!expecting_tls_get_addr
8690 || !sec
->has_tls_get_addr_call
)
8693 if (rel
+ 1 < relend
8694 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8696 htab
->tls_get_addr_fd
))
8698 if (expecting_tls_get_addr
== 2)
8700 /* Check for toc tls entries. */
8701 unsigned char *toc_tls
;
8704 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8709 if (toc_tls
!= NULL
)
8711 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8712 found_tls_get_addr_arg
= 1;
8714 toc_ref
[toc_ref_index
] = 1;
8720 if (expecting_tls_get_addr
!= 1)
8723 /* Uh oh, we didn't find the expected call. We
8724 could just mark this symbol to exclude it
8725 from tls optimization but it's safer to skip
8726 the entire optimization. */
8727 /* xgettext:c-format */
8728 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8729 "TLS optimization disabled\n"),
8730 ibfd
, sec
, rel
->r_offset
);
8735 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8737 struct plt_entry
*ent
;
8738 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8741 if (ent
->addend
== 0)
8743 if (ent
->plt
.refcount
> 0)
8745 ent
->plt
.refcount
-= 1;
8746 expecting_tls_get_addr
= 0;
8752 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8754 struct plt_entry
*ent
;
8755 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8758 if (ent
->addend
== 0)
8760 if (ent
->plt
.refcount
> 0)
8761 ent
->plt
.refcount
-= 1;
8769 if ((tls_set
& TLS_EXPLICIT
) == 0)
8771 struct got_entry
*ent
;
8773 /* Adjust got entry for this reloc. */
8777 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8779 for (; ent
!= NULL
; ent
= ent
->next
)
8780 if (ent
->addend
== rel
->r_addend
8781 && ent
->owner
== ibfd
8782 && ent
->tls_type
== tls_type
)
8789 /* We managed to get rid of a got entry. */
8790 if (ent
->got
.refcount
> 0)
8791 ent
->got
.refcount
-= 1;
8796 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8797 we'll lose one or two dyn relocs. */
8798 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8802 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8804 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8810 *tls_mask
|= tls_set
;
8811 *tls_mask
&= ~tls_clear
;
8814 if (elf_section_data (sec
)->relocs
!= relstart
)
8819 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8821 if (!info
->keep_memory
)
8824 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8828 if (toc_ref
!= NULL
)
8833 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8834 the values of any global symbols in a toc section that has been
8835 edited. Globals in toc sections should be a rarity, so this function
8836 sets a flag if any are found in toc sections other than the one just
8837 edited, so that futher hash table traversals can be avoided. */
8839 struct adjust_toc_info
8842 unsigned long *skip
;
8843 bfd_boolean global_toc_syms
;
8846 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8849 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8851 struct ppc_link_hash_entry
*eh
;
8852 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8855 if (h
->root
.type
!= bfd_link_hash_defined
8856 && h
->root
.type
!= bfd_link_hash_defweak
)
8859 eh
= (struct ppc_link_hash_entry
*) h
;
8860 if (eh
->adjust_done
)
8863 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8865 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8866 i
= toc_inf
->toc
->rawsize
>> 3;
8868 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8870 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8873 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8876 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8877 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8880 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8881 eh
->adjust_done
= 1;
8883 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8884 toc_inf
->global_toc_syms
= TRUE
;
8889 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8890 on a _LO variety toc/got reloc. */
8893 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8895 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8896 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8897 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8898 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8899 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8900 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8901 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8902 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8903 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8904 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8905 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8906 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8907 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8908 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8909 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8910 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8911 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8912 /* Exclude lfqu by testing reloc. If relocs are ever
8913 defined for the reduced D field in psq_lu then those
8914 will need testing too. */
8915 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8916 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8918 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8919 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8920 /* Exclude stfqu. psq_stu as above for psq_lu. */
8921 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8922 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8923 && (insn
& 1) == 0));
8926 /* Examine all relocs referencing .toc sections in order to remove
8927 unused .toc entries. */
8930 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8933 struct adjust_toc_info toc_inf
;
8934 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8936 htab
->do_toc_opt
= 1;
8937 toc_inf
.global_toc_syms
= TRUE
;
8938 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8940 asection
*toc
, *sec
;
8941 Elf_Internal_Shdr
*symtab_hdr
;
8942 Elf_Internal_Sym
*local_syms
;
8943 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8944 unsigned long *skip
, *drop
;
8945 unsigned char *used
;
8946 unsigned char *keep
, last
, some_unused
;
8948 if (!is_ppc64_elf (ibfd
))
8951 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8954 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8955 || discarded_section (toc
))
8960 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8962 /* Look at sections dropped from the final link. */
8965 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8967 if (sec
->reloc_count
== 0
8968 || !discarded_section (sec
)
8969 || get_opd_info (sec
)
8970 || (sec
->flags
& SEC_ALLOC
) == 0
8971 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8974 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8975 if (relstart
== NULL
)
8978 /* Run through the relocs to see which toc entries might be
8980 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8982 enum elf_ppc64_reloc_type r_type
;
8983 unsigned long r_symndx
;
8985 struct elf_link_hash_entry
*h
;
8986 Elf_Internal_Sym
*sym
;
8989 r_type
= ELF64_R_TYPE (rel
->r_info
);
8996 case R_PPC64_TOC16_LO
:
8997 case R_PPC64_TOC16_HI
:
8998 case R_PPC64_TOC16_HA
:
8999 case R_PPC64_TOC16_DS
:
9000 case R_PPC64_TOC16_LO_DS
:
9004 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9005 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9013 val
= h
->root
.u
.def
.value
;
9015 val
= sym
->st_value
;
9016 val
+= rel
->r_addend
;
9018 if (val
>= toc
->size
)
9021 /* Anything in the toc ought to be aligned to 8 bytes.
9022 If not, don't mark as unused. */
9028 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9033 skip
[val
>> 3] = ref_from_discarded
;
9036 if (elf_section_data (sec
)->relocs
!= relstart
)
9040 /* For largetoc loads of address constants, we can convert
9041 . addis rx,2,addr@got@ha
9042 . ld ry,addr@got@l(rx)
9044 . addis rx,2,addr@toc@ha
9045 . addi ry,rx,addr@toc@l
9046 when addr is within 2G of the toc pointer. This then means
9047 that the word storing "addr" in the toc is no longer needed. */
9049 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9050 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9051 && toc
->reloc_count
!= 0)
9053 /* Read toc relocs. */
9054 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9056 if (toc_relocs
== NULL
)
9059 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9061 enum elf_ppc64_reloc_type r_type
;
9062 unsigned long r_symndx
;
9064 struct elf_link_hash_entry
*h
;
9065 Elf_Internal_Sym
*sym
;
9068 r_type
= ELF64_R_TYPE (rel
->r_info
);
9069 if (r_type
!= R_PPC64_ADDR64
)
9072 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9073 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9078 || sym_sec
->output_section
== NULL
9079 || discarded_section (sym_sec
))
9082 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9087 if (h
->type
== STT_GNU_IFUNC
)
9089 val
= h
->root
.u
.def
.value
;
9093 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9095 val
= sym
->st_value
;
9097 val
+= rel
->r_addend
;
9098 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9100 /* We don't yet know the exact toc pointer value, but we
9101 know it will be somewhere in the toc section. Don't
9102 optimize if the difference from any possible toc
9103 pointer is outside [ff..f80008000, 7fff7fff]. */
9104 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9105 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9108 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9109 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9114 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9119 skip
[rel
->r_offset
>> 3]
9120 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9127 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9131 if (local_syms
!= NULL
9132 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9136 && elf_section_data (sec
)->relocs
!= relstart
)
9138 if (toc_relocs
!= NULL
9139 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9146 /* Now check all kept sections that might reference the toc.
9147 Check the toc itself last. */
9148 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9151 sec
= (sec
== toc
? NULL
9152 : sec
->next
== NULL
? toc
9153 : sec
->next
== toc
&& toc
->next
? toc
->next
9158 if (sec
->reloc_count
== 0
9159 || discarded_section (sec
)
9160 || get_opd_info (sec
)
9161 || (sec
->flags
& SEC_ALLOC
) == 0
9162 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9165 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9167 if (relstart
== NULL
)
9173 /* Mark toc entries referenced as used. */
9177 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9179 enum elf_ppc64_reloc_type r_type
;
9180 unsigned long r_symndx
;
9182 struct elf_link_hash_entry
*h
;
9183 Elf_Internal_Sym
*sym
;
9185 enum {no_check
, check_lo
, check_ha
} insn_check
;
9187 r_type
= ELF64_R_TYPE (rel
->r_info
);
9191 insn_check
= no_check
;
9194 case R_PPC64_GOT_TLSLD16_HA
:
9195 case R_PPC64_GOT_TLSGD16_HA
:
9196 case R_PPC64_GOT_TPREL16_HA
:
9197 case R_PPC64_GOT_DTPREL16_HA
:
9198 case R_PPC64_GOT16_HA
:
9199 case R_PPC64_TOC16_HA
:
9200 insn_check
= check_ha
;
9203 case R_PPC64_GOT_TLSLD16_LO
:
9204 case R_PPC64_GOT_TLSGD16_LO
:
9205 case R_PPC64_GOT_TPREL16_LO_DS
:
9206 case R_PPC64_GOT_DTPREL16_LO_DS
:
9207 case R_PPC64_GOT16_LO
:
9208 case R_PPC64_GOT16_LO_DS
:
9209 case R_PPC64_TOC16_LO
:
9210 case R_PPC64_TOC16_LO_DS
:
9211 insn_check
= check_lo
;
9215 if (insn_check
!= no_check
)
9217 bfd_vma off
= rel
->r_offset
& ~3;
9218 unsigned char buf
[4];
9221 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9226 insn
= bfd_get_32 (ibfd
, buf
);
9227 if (insn_check
== check_lo
9228 ? !ok_lo_toc_insn (insn
, r_type
)
9229 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9230 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9234 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9235 sprintf (str
, "%#08x", insn
);
9236 info
->callbacks
->einfo
9237 /* xgettext:c-format */
9238 (_("%P: %H: toc optimization is not supported for"
9239 " %s instruction.\n"),
9240 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9247 case R_PPC64_TOC16_LO
:
9248 case R_PPC64_TOC16_HI
:
9249 case R_PPC64_TOC16_HA
:
9250 case R_PPC64_TOC16_DS
:
9251 case R_PPC64_TOC16_LO_DS
:
9252 /* In case we're taking addresses of toc entries. */
9253 case R_PPC64_ADDR64
:
9260 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9261 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9272 val
= h
->root
.u
.def
.value
;
9274 val
= sym
->st_value
;
9275 val
+= rel
->r_addend
;
9277 if (val
>= toc
->size
)
9280 if ((skip
[val
>> 3] & can_optimize
) != 0)
9287 case R_PPC64_TOC16_HA
:
9290 case R_PPC64_TOC16_LO_DS
:
9291 off
= rel
->r_offset
;
9292 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9293 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9299 if ((opc
& (0x3f << 2)) == (58u << 2))
9304 /* Wrong sort of reloc, or not a ld. We may
9305 as well clear ref_from_discarded too. */
9312 /* For the toc section, we only mark as used if this
9313 entry itself isn't unused. */
9314 else if ((used
[rel
->r_offset
>> 3]
9315 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9318 /* Do all the relocs again, to catch reference
9327 if (elf_section_data (sec
)->relocs
!= relstart
)
9331 /* Merge the used and skip arrays. Assume that TOC
9332 doublewords not appearing as either used or unused belong
9333 to to an entry more than one doubleword in size. */
9334 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9335 drop
< skip
+ (toc
->size
+ 7) / 8;
9340 *drop
&= ~ref_from_discarded
;
9341 if ((*drop
& can_optimize
) != 0)
9345 else if ((*drop
& ref_from_discarded
) != 0)
9348 last
= ref_from_discarded
;
9358 bfd_byte
*contents
, *src
;
9360 Elf_Internal_Sym
*sym
;
9361 bfd_boolean local_toc_syms
= FALSE
;
9363 /* Shuffle the toc contents, and at the same time convert the
9364 skip array from booleans into offsets. */
9365 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9368 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9370 for (src
= contents
, off
= 0, drop
= skip
;
9371 src
< contents
+ toc
->size
;
9374 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9379 memcpy (src
- off
, src
, 8);
9383 toc
->rawsize
= toc
->size
;
9384 toc
->size
= src
- contents
- off
;
9386 /* Adjust addends for relocs against the toc section sym,
9387 and optimize any accesses we can. */
9388 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9390 if (sec
->reloc_count
== 0
9391 || discarded_section (sec
))
9394 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9396 if (relstart
== NULL
)
9399 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9401 enum elf_ppc64_reloc_type r_type
;
9402 unsigned long r_symndx
;
9404 struct elf_link_hash_entry
*h
;
9407 r_type
= ELF64_R_TYPE (rel
->r_info
);
9414 case R_PPC64_TOC16_LO
:
9415 case R_PPC64_TOC16_HI
:
9416 case R_PPC64_TOC16_HA
:
9417 case R_PPC64_TOC16_DS
:
9418 case R_PPC64_TOC16_LO_DS
:
9419 case R_PPC64_ADDR64
:
9423 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9424 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9432 val
= h
->root
.u
.def
.value
;
9435 val
= sym
->st_value
;
9437 local_toc_syms
= TRUE
;
9440 val
+= rel
->r_addend
;
9442 if (val
> toc
->rawsize
)
9444 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9446 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9448 Elf_Internal_Rela
*tocrel
9449 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9450 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9454 case R_PPC64_TOC16_HA
:
9455 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9458 case R_PPC64_TOC16_LO_DS
:
9459 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9463 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9465 info
->callbacks
->einfo
9466 /* xgettext:c-format */
9467 (_("%P: %H: %s references "
9468 "optimized away TOC entry\n"),
9469 ibfd
, sec
, rel
->r_offset
,
9470 ppc64_elf_howto_table
[r_type
]->name
);
9471 bfd_set_error (bfd_error_bad_value
);
9474 rel
->r_addend
= tocrel
->r_addend
;
9475 elf_section_data (sec
)->relocs
= relstart
;
9479 if (h
!= NULL
|| sym
->st_value
!= 0)
9482 rel
->r_addend
-= skip
[val
>> 3];
9483 elf_section_data (sec
)->relocs
= relstart
;
9486 if (elf_section_data (sec
)->relocs
!= relstart
)
9490 /* We shouldn't have local or global symbols defined in the TOC,
9491 but handle them anyway. */
9492 if (local_syms
!= NULL
)
9493 for (sym
= local_syms
;
9494 sym
< local_syms
+ symtab_hdr
->sh_info
;
9496 if (sym
->st_value
!= 0
9497 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9501 if (sym
->st_value
> toc
->rawsize
)
9502 i
= toc
->rawsize
>> 3;
9504 i
= sym
->st_value
>> 3;
9506 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9510 (_("%s defined on removed toc entry"),
9511 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9514 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9515 sym
->st_value
= (bfd_vma
) i
<< 3;
9518 sym
->st_value
-= skip
[i
];
9519 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9522 /* Adjust any global syms defined in this toc input section. */
9523 if (toc_inf
.global_toc_syms
)
9526 toc_inf
.skip
= skip
;
9527 toc_inf
.global_toc_syms
= FALSE
;
9528 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9532 if (toc
->reloc_count
!= 0)
9534 Elf_Internal_Shdr
*rel_hdr
;
9535 Elf_Internal_Rela
*wrel
;
9538 /* Remove unused toc relocs, and adjust those we keep. */
9539 if (toc_relocs
== NULL
)
9540 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9542 if (toc_relocs
== NULL
)
9546 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9547 if ((skip
[rel
->r_offset
>> 3]
9548 & (ref_from_discarded
| can_optimize
)) == 0)
9550 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9551 wrel
->r_info
= rel
->r_info
;
9552 wrel
->r_addend
= rel
->r_addend
;
9555 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9556 &local_syms
, NULL
, NULL
))
9559 elf_section_data (toc
)->relocs
= toc_relocs
;
9560 toc
->reloc_count
= wrel
- toc_relocs
;
9561 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9562 sz
= rel_hdr
->sh_entsize
;
9563 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9566 else if (toc_relocs
!= NULL
9567 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9570 if (local_syms
!= NULL
9571 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9573 if (!info
->keep_memory
)
9576 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9584 /* Return true iff input section I references the TOC using
9585 instructions limited to +/-32k offsets. */
9588 ppc64_elf_has_small_toc_reloc (asection
*i
)
9590 return (is_ppc64_elf (i
->owner
)
9591 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9594 /* Allocate space for one GOT entry. */
9597 allocate_got (struct elf_link_hash_entry
*h
,
9598 struct bfd_link_info
*info
,
9599 struct got_entry
*gent
)
9601 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9603 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9604 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9606 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9607 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9608 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9610 gent
->got
.offset
= got
->size
;
9611 got
->size
+= entsize
;
9613 dyn
= htab
->elf
.dynamic_sections_created
;
9614 if (h
->type
== STT_GNU_IFUNC
)
9616 htab
->elf
.irelplt
->size
+= rentsize
;
9617 htab
->got_reli_size
+= rentsize
;
9619 else if ((bfd_link_pic (info
)
9620 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9621 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9622 || h
->root
.type
!= bfd_link_hash_undefweak
))
9624 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9625 relgot
->size
+= rentsize
;
9629 /* This function merges got entries in the same toc group. */
9632 merge_got_entries (struct got_entry
**pent
)
9634 struct got_entry
*ent
, *ent2
;
9636 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9637 if (!ent
->is_indirect
)
9638 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9639 if (!ent2
->is_indirect
9640 && ent2
->addend
== ent
->addend
9641 && ent2
->tls_type
== ent
->tls_type
9642 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9644 ent2
->is_indirect
= TRUE
;
9645 ent2
->got
.ent
= ent
;
9649 /* Allocate space in .plt, .got and associated reloc sections for
9653 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9655 struct bfd_link_info
*info
;
9656 struct ppc_link_hash_table
*htab
;
9658 struct ppc_link_hash_entry
*eh
;
9659 struct got_entry
**pgent
, *gent
;
9661 if (h
->root
.type
== bfd_link_hash_indirect
)
9664 info
= (struct bfd_link_info
*) inf
;
9665 htab
= ppc_hash_table (info
);
9669 eh
= (struct ppc_link_hash_entry
*) h
;
9670 /* Run through the TLS GD got entries first if we're changing them
9672 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9673 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9674 if (gent
->got
.refcount
> 0
9675 && (gent
->tls_type
& TLS_GD
) != 0)
9677 /* This was a GD entry that has been converted to TPREL. If
9678 there happens to be a TPREL entry we can use that one. */
9679 struct got_entry
*ent
;
9680 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9681 if (ent
->got
.refcount
> 0
9682 && (ent
->tls_type
& TLS_TPREL
) != 0
9683 && ent
->addend
== gent
->addend
9684 && ent
->owner
== gent
->owner
)
9686 gent
->got
.refcount
= 0;
9690 /* If not, then we'll be using our own TPREL entry. */
9691 if (gent
->got
.refcount
!= 0)
9692 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9695 /* Remove any list entry that won't generate a word in the GOT before
9696 we call merge_got_entries. Otherwise we risk merging to empty
9698 pgent
= &h
->got
.glist
;
9699 while ((gent
= *pgent
) != NULL
)
9700 if (gent
->got
.refcount
> 0)
9702 if ((gent
->tls_type
& TLS_LD
) != 0
9705 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9706 *pgent
= gent
->next
;
9709 pgent
= &gent
->next
;
9712 *pgent
= gent
->next
;
9714 if (!htab
->do_multi_toc
)
9715 merge_got_entries (&h
->got
.glist
);
9717 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9718 if (!gent
->is_indirect
)
9720 /* Make sure this symbol is output as a dynamic symbol.
9721 Undefined weak syms won't yet be marked as dynamic,
9722 nor will all TLS symbols. */
9723 if (h
->dynindx
== -1
9725 && h
->type
!= STT_GNU_IFUNC
9726 && htab
->elf
.dynamic_sections_created
)
9728 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9732 if (!is_ppc64_elf (gent
->owner
))
9735 allocate_got (h
, info
, gent
);
9738 if (!htab
->elf
.dynamic_sections_created
9739 && h
->type
!= STT_GNU_IFUNC
)
9740 eh
->dyn_relocs
= NULL
;
9742 if (eh
->dyn_relocs
!= NULL
)
9744 struct elf_dyn_relocs
*p
, **pp
;
9746 /* In the shared -Bsymbolic case, discard space allocated for
9747 dynamic pc-relative relocs against symbols which turn out to
9748 be defined in regular objects. For the normal shared case,
9749 discard space for relocs that have become local due to symbol
9750 visibility changes. */
9752 if (bfd_link_pic (info
))
9754 /* Relocs that use pc_count are those that appear on a call
9755 insn, or certain REL relocs (see must_be_dyn_reloc) that
9756 can be generated via assembly. We want calls to
9757 protected symbols to resolve directly to the function
9758 rather than going via the plt. If people want function
9759 pointer comparisons to work as expected then they should
9760 avoid writing weird assembly. */
9761 if (SYMBOL_CALLS_LOCAL (info
, h
))
9763 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9765 p
->count
-= p
->pc_count
;
9774 /* Also discard relocs on undefined weak syms with
9775 non-default visibility. */
9776 if (eh
->dyn_relocs
!= NULL
9777 && h
->root
.type
== bfd_link_hash_undefweak
)
9779 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9780 eh
->dyn_relocs
= NULL
;
9782 /* Make sure this symbol is output as a dynamic symbol.
9783 Undefined weak syms won't yet be marked as dynamic. */
9784 else if (h
->dynindx
== -1
9785 && !h
->forced_local
)
9787 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9792 else if (h
->type
== STT_GNU_IFUNC
)
9794 /* A plt entry is always created when making direct calls to
9795 an ifunc, even when building a static executable, but
9796 that doesn't cover all cases. We may have only an ifunc
9797 initialised function pointer for a given ifunc symbol.
9799 For ELFv2, dynamic relocations are not required when
9800 generating a global entry PLT stub. */
9801 if (abiversion (info
->output_bfd
) >= 2)
9803 if (global_entry_stub (h
))
9804 eh
->dyn_relocs
= NULL
;
9807 /* For ELFv1 we have function descriptors. Descriptors need
9808 to be treated like PLT entries and thus have dynamic
9809 relocations. One exception is when the function
9810 descriptor is copied into .dynbss (which should only
9811 happen with ancient versions of gcc). */
9812 else if (h
->needs_copy
)
9813 eh
->dyn_relocs
= NULL
;
9815 else if (ELIMINATE_COPY_RELOCS
)
9817 /* For the non-pic case, discard space for relocs against
9818 symbols which turn out to need copy relocs or are not
9821 /* First make sure this symbol is output as a dynamic symbol.
9822 Undefined weak syms won't yet be marked as dynamic. */
9823 if (h
->root
.type
== bfd_link_hash_undefweak
9828 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
9833 || h
->dynindx
== -1)
9834 eh
->dyn_relocs
= NULL
;
9837 /* Finally, allocate space. */
9838 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9840 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9841 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9842 sreloc
= htab
->elf
.irelplt
;
9843 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9847 if ((htab
->elf
.dynamic_sections_created
9849 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
9850 || h
->type
== STT_GNU_IFUNC
)
9852 struct plt_entry
*pent
;
9853 bfd_boolean doneone
= FALSE
;
9854 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9855 if (pent
->plt
.refcount
> 0)
9857 if (!htab
->elf
.dynamic_sections_created
9858 || h
->dynindx
== -1)
9861 pent
->plt
.offset
= s
->size
;
9862 s
->size
+= PLT_ENTRY_SIZE (htab
);
9863 s
= htab
->elf
.irelplt
;
9867 /* If this is the first .plt entry, make room for the special
9871 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9873 pent
->plt
.offset
= s
->size
;
9875 /* Make room for this entry. */
9876 s
->size
+= PLT_ENTRY_SIZE (htab
);
9878 /* Make room for the .glink code. */
9881 s
->size
+= GLINK_CALL_STUB_SIZE
;
9884 /* We need bigger stubs past index 32767. */
9885 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9892 /* We also need to make an entry in the .rela.plt section. */
9893 s
= htab
->elf
.srelplt
;
9895 s
->size
+= sizeof (Elf64_External_Rela
);
9899 pent
->plt
.offset
= (bfd_vma
) -1;
9902 h
->plt
.plist
= NULL
;
9908 h
->plt
.plist
= NULL
;
9915 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9916 to set up space for global entry stubs. These are put in glink,
9917 after the branch table. */
9920 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9922 struct bfd_link_info
*info
;
9923 struct ppc_link_hash_table
*htab
;
9924 struct plt_entry
*pent
;
9927 if (h
->root
.type
== bfd_link_hash_indirect
)
9930 if (!h
->pointer_equality_needed
)
9937 htab
= ppc_hash_table (info
);
9942 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9943 if (pent
->plt
.offset
!= (bfd_vma
) -1
9944 && pent
->addend
== 0)
9946 /* For ELFv2, if this symbol is not defined in a regular file
9947 and we are not generating a shared library or pie, then we
9948 need to define the symbol in the executable on a call stub.
9949 This is to avoid text relocations. */
9950 s
->size
= (s
->size
+ 15) & -16;
9951 h
->root
.type
= bfd_link_hash_defined
;
9952 h
->root
.u
.def
.section
= s
;
9953 h
->root
.u
.def
.value
= s
->size
;
9960 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9961 read-only sections. */
9964 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9966 if (h
->root
.type
== bfd_link_hash_indirect
)
9969 if (readonly_dynrelocs (h
))
9971 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9973 /* Not an error, just cut short the traversal. */
9979 /* Set the sizes of the dynamic sections. */
9982 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9983 struct bfd_link_info
*info
)
9985 struct ppc_link_hash_table
*htab
;
9990 struct got_entry
*first_tlsld
;
9992 htab
= ppc_hash_table (info
);
9996 dynobj
= htab
->elf
.dynobj
;
10000 if (htab
->elf
.dynamic_sections_created
)
10002 /* Set the contents of the .interp section to the interpreter. */
10003 if (bfd_link_executable (info
) && !info
->nointerp
)
10005 s
= bfd_get_linker_section (dynobj
, ".interp");
10008 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10009 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10013 /* Set up .got offsets for local syms, and space for local dynamic
10015 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10017 struct got_entry
**lgot_ents
;
10018 struct got_entry
**end_lgot_ents
;
10019 struct plt_entry
**local_plt
;
10020 struct plt_entry
**end_local_plt
;
10021 unsigned char *lgot_masks
;
10022 bfd_size_type locsymcount
;
10023 Elf_Internal_Shdr
*symtab_hdr
;
10025 if (!is_ppc64_elf (ibfd
))
10028 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10030 struct ppc_dyn_relocs
*p
;
10032 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10034 if (!bfd_is_abs_section (p
->sec
)
10035 && bfd_is_abs_section (p
->sec
->output_section
))
10037 /* Input section has been discarded, either because
10038 it is a copy of a linkonce section or due to
10039 linker script /DISCARD/, so we'll be discarding
10042 else if (p
->count
!= 0)
10044 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10046 srel
= htab
->elf
.irelplt
;
10047 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10048 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10049 info
->flags
|= DF_TEXTREL
;
10054 lgot_ents
= elf_local_got_ents (ibfd
);
10058 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10059 locsymcount
= symtab_hdr
->sh_info
;
10060 end_lgot_ents
= lgot_ents
+ locsymcount
;
10061 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10062 end_local_plt
= local_plt
+ locsymcount
;
10063 lgot_masks
= (unsigned char *) end_local_plt
;
10064 s
= ppc64_elf_tdata (ibfd
)->got
;
10065 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10067 struct got_entry
**pent
, *ent
;
10070 while ((ent
= *pent
) != NULL
)
10071 if (ent
->got
.refcount
> 0)
10073 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10075 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10080 unsigned int ent_size
= 8;
10081 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10083 ent
->got
.offset
= s
->size
;
10084 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10089 s
->size
+= ent_size
;
10090 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10092 htab
->elf
.irelplt
->size
+= rel_size
;
10093 htab
->got_reli_size
+= rel_size
;
10095 else if (bfd_link_pic (info
))
10097 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10098 srel
->size
+= rel_size
;
10107 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10108 for (; local_plt
< end_local_plt
; ++local_plt
)
10110 struct plt_entry
*ent
;
10112 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10113 if (ent
->plt
.refcount
> 0)
10115 s
= htab
->elf
.iplt
;
10116 ent
->plt
.offset
= s
->size
;
10117 s
->size
+= PLT_ENTRY_SIZE (htab
);
10119 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10122 ent
->plt
.offset
= (bfd_vma
) -1;
10126 /* Allocate global sym .plt and .got entries, and space for global
10127 sym dynamic relocs. */
10128 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10129 /* Stash the end of glink branch table. */
10130 if (htab
->glink
!= NULL
)
10131 htab
->glink
->rawsize
= htab
->glink
->size
;
10133 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10134 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10136 first_tlsld
= NULL
;
10137 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10139 struct got_entry
*ent
;
10141 if (!is_ppc64_elf (ibfd
))
10144 ent
= ppc64_tlsld_got (ibfd
);
10145 if (ent
->got
.refcount
> 0)
10147 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10149 ent
->is_indirect
= TRUE
;
10150 ent
->got
.ent
= first_tlsld
;
10154 if (first_tlsld
== NULL
)
10156 s
= ppc64_elf_tdata (ibfd
)->got
;
10157 ent
->got
.offset
= s
->size
;
10160 if (bfd_link_pic (info
))
10162 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10163 srel
->size
+= sizeof (Elf64_External_Rela
);
10168 ent
->got
.offset
= (bfd_vma
) -1;
10171 /* We now have determined the sizes of the various dynamic sections.
10172 Allocate memory for them. */
10174 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10176 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10179 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10180 /* These haven't been allocated yet; don't strip. */
10182 else if (s
== htab
->elf
.sgot
10183 || s
== htab
->elf
.splt
10184 || s
== htab
->elf
.iplt
10185 || s
== htab
->glink
10186 || s
== htab
->elf
.sdynbss
10187 || s
== htab
->elf
.sdynrelro
)
10189 /* Strip this section if we don't need it; see the
10192 else if (s
== htab
->glink_eh_frame
)
10194 if (!bfd_is_abs_section (s
->output_section
))
10195 /* Not sized yet. */
10198 else if (CONST_STRNEQ (s
->name
, ".rela"))
10202 if (s
!= htab
->elf
.srelplt
)
10205 /* We use the reloc_count field as a counter if we need
10206 to copy relocs into the output file. */
10207 s
->reloc_count
= 0;
10212 /* It's not one of our sections, so don't allocate space. */
10218 /* If we don't need this section, strip it from the
10219 output file. This is mostly to handle .rela.bss and
10220 .rela.plt. We must create both sections in
10221 create_dynamic_sections, because they must be created
10222 before the linker maps input sections to output
10223 sections. The linker does that before
10224 adjust_dynamic_symbol is called, and it is that
10225 function which decides whether anything needs to go
10226 into these sections. */
10227 s
->flags
|= SEC_EXCLUDE
;
10231 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10234 /* Allocate memory for the section contents. We use bfd_zalloc
10235 here in case unused entries are not reclaimed before the
10236 section's contents are written out. This should not happen,
10237 but this way if it does we get a R_PPC64_NONE reloc in .rela
10238 sections instead of garbage.
10239 We also rely on the section contents being zero when writing
10240 the GOT and .dynrelro. */
10241 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10242 if (s
->contents
== NULL
)
10246 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10248 if (!is_ppc64_elf (ibfd
))
10251 s
= ppc64_elf_tdata (ibfd
)->got
;
10252 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10255 s
->flags
|= SEC_EXCLUDE
;
10258 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10259 if (s
->contents
== NULL
)
10263 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10267 s
->flags
|= SEC_EXCLUDE
;
10270 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10271 if (s
->contents
== NULL
)
10274 s
->reloc_count
= 0;
10279 if (htab
->elf
.dynamic_sections_created
)
10281 bfd_boolean tls_opt
;
10283 /* Add some entries to the .dynamic section. We fill in the
10284 values later, in ppc64_elf_finish_dynamic_sections, but we
10285 must add the entries now so that we get the correct size for
10286 the .dynamic section. The DT_DEBUG entry is filled in by the
10287 dynamic linker and used by the debugger. */
10288 #define add_dynamic_entry(TAG, VAL) \
10289 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10291 if (bfd_link_executable (info
))
10293 if (!add_dynamic_entry (DT_DEBUG
, 0))
10297 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10299 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10300 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10301 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10302 || !add_dynamic_entry (DT_JMPREL
, 0)
10303 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10307 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10309 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10310 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10314 tls_opt
= (htab
->params
->tls_get_addr_opt
10315 && htab
->tls_get_addr_fd
!= NULL
10316 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10317 if (tls_opt
|| !htab
->opd_abi
)
10319 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10325 if (!add_dynamic_entry (DT_RELA
, 0)
10326 || !add_dynamic_entry (DT_RELASZ
, 0)
10327 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10330 /* If any dynamic relocs apply to a read-only section,
10331 then we need a DT_TEXTREL entry. */
10332 if ((info
->flags
& DF_TEXTREL
) == 0)
10333 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10335 if ((info
->flags
& DF_TEXTREL
) != 0)
10337 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10342 #undef add_dynamic_entry
10347 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10350 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10352 if (h
->plt
.plist
!= NULL
10354 && !h
->pointer_equality_needed
)
10357 return _bfd_elf_hash_symbol (h
);
10360 /* Determine the type of stub needed, if any, for a call. */
10362 static inline enum ppc_stub_type
10363 ppc_type_of_stub (asection
*input_sec
,
10364 const Elf_Internal_Rela
*rel
,
10365 struct ppc_link_hash_entry
**hash
,
10366 struct plt_entry
**plt_ent
,
10367 bfd_vma destination
,
10368 unsigned long local_off
)
10370 struct ppc_link_hash_entry
*h
= *hash
;
10372 bfd_vma branch_offset
;
10373 bfd_vma max_branch_offset
;
10374 enum elf_ppc64_reloc_type r_type
;
10378 struct plt_entry
*ent
;
10379 struct ppc_link_hash_entry
*fdh
= h
;
10381 && h
->oh
->is_func_descriptor
)
10383 fdh
= ppc_follow_link (h
->oh
);
10387 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10388 if (ent
->addend
== rel
->r_addend
10389 && ent
->plt
.offset
!= (bfd_vma
) -1)
10392 return ppc_stub_plt_call
;
10395 /* Here, we know we don't have a plt entry. If we don't have a
10396 either a defined function descriptor or a defined entry symbol
10397 in a regular object file, then it is pointless trying to make
10398 any other type of stub. */
10399 if (!is_static_defined (&fdh
->elf
)
10400 && !is_static_defined (&h
->elf
))
10401 return ppc_stub_none
;
10403 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10405 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10406 struct plt_entry
**local_plt
= (struct plt_entry
**)
10407 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10408 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10410 if (local_plt
[r_symndx
] != NULL
)
10412 struct plt_entry
*ent
;
10414 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10415 if (ent
->addend
== rel
->r_addend
10416 && ent
->plt
.offset
!= (bfd_vma
) -1)
10419 return ppc_stub_plt_call
;
10424 /* Determine where the call point is. */
10425 location
= (input_sec
->output_offset
10426 + input_sec
->output_section
->vma
10429 branch_offset
= destination
- location
;
10430 r_type
= ELF64_R_TYPE (rel
->r_info
);
10432 /* Determine if a long branch stub is needed. */
10433 max_branch_offset
= 1 << 25;
10434 if (r_type
!= R_PPC64_REL24
)
10435 max_branch_offset
= 1 << 15;
10437 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10438 /* We need a stub. Figure out whether a long_branch or plt_branch
10439 is needed later. */
10440 return ppc_stub_long_branch
;
10442 return ppc_stub_none
;
10445 /* With power7 weakly ordered memory model, it is possible for ld.so
10446 to update a plt entry in one thread and have another thread see a
10447 stale zero toc entry. To avoid this we need some sort of acquire
10448 barrier in the call stub. One solution is to make the load of the
10449 toc word seem to appear to depend on the load of the function entry
10450 word. Another solution is to test for r2 being zero, and branch to
10451 the appropriate glink entry if so.
10453 . fake dep barrier compare
10454 . ld 12,xxx(2) ld 12,xxx(2)
10455 . mtctr 12 mtctr 12
10456 . xor 11,12,12 ld 2,xxx+8(2)
10457 . add 2,2,11 cmpldi 2,0
10458 . ld 2,xxx+8(2) bnectr+
10459 . bctr b <glink_entry>
10461 The solution involving the compare turns out to be faster, so
10462 that's what we use unless the branch won't reach. */
10464 #define ALWAYS_USE_FAKE_DEP 0
10465 #define ALWAYS_EMIT_R2SAVE 0
10467 #define PPC_LO(v) ((v) & 0xffff)
10468 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10469 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10471 static inline unsigned int
10472 plt_stub_size (struct ppc_link_hash_table
*htab
,
10473 struct ppc_stub_hash_entry
*stub_entry
,
10476 unsigned size
= 12;
10478 if (ALWAYS_EMIT_R2SAVE
10479 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10481 if (PPC_HA (off
) != 0)
10486 if (htab
->params
->plt_static_chain
)
10488 if (htab
->params
->plt_thread_safe
10489 && htab
->elf
.dynamic_sections_created
10490 && stub_entry
->h
!= NULL
10491 && stub_entry
->h
->elf
.dynindx
!= -1)
10493 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10496 if (stub_entry
->h
!= NULL
10497 && (stub_entry
->h
== htab
->tls_get_addr_fd
10498 || stub_entry
->h
== htab
->tls_get_addr
)
10499 && htab
->params
->tls_get_addr_opt
)
10504 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10505 then return the padding needed to do so. */
10506 static inline unsigned int
10507 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10508 struct ppc_stub_hash_entry
*stub_entry
,
10511 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10512 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10513 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10515 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10516 > ((stub_size
- 1) & -stub_align
))
10517 return stub_align
- (stub_off
& (stub_align
- 1));
10521 /* Build a .plt call stub. */
10523 static inline bfd_byte
*
10524 build_plt_stub (struct ppc_link_hash_table
*htab
,
10525 struct ppc_stub_hash_entry
*stub_entry
,
10526 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10528 bfd
*obfd
= htab
->params
->stub_bfd
;
10529 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10530 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10531 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10532 && htab
->elf
.dynamic_sections_created
10533 && stub_entry
->h
!= NULL
10534 && stub_entry
->h
->elf
.dynindx
!= -1);
10535 bfd_boolean use_fake_dep
= plt_thread_safe
;
10536 bfd_vma cmp_branch_off
= 0;
10538 if (!ALWAYS_USE_FAKE_DEP
10541 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10542 || stub_entry
->h
== htab
->tls_get_addr
)
10543 && htab
->params
->tls_get_addr_opt
))
10545 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10546 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10547 / PLT_ENTRY_SIZE (htab
));
10548 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10551 if (pltindex
> 32768)
10552 glinkoff
+= (pltindex
- 32768) * 4;
10554 + htab
->glink
->output_offset
10555 + htab
->glink
->output_section
->vma
);
10556 from
= (p
- stub_entry
->group
->stub_sec
->contents
10557 + 4 * (ALWAYS_EMIT_R2SAVE
10558 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10559 + 4 * (PPC_HA (offset
) != 0)
10560 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10561 != PPC_HA (offset
))
10562 + 4 * (plt_static_chain
!= 0)
10564 + stub_entry
->group
->stub_sec
->output_offset
10565 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10566 cmp_branch_off
= to
- from
;
10567 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10570 if (PPC_HA (offset
) != 0)
10574 if (ALWAYS_EMIT_R2SAVE
10575 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10576 r
[0].r_offset
+= 4;
10577 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10578 r
[1].r_offset
= r
[0].r_offset
+ 4;
10579 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10580 r
[1].r_addend
= r
[0].r_addend
;
10583 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10585 r
[2].r_offset
= r
[1].r_offset
+ 4;
10586 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10587 r
[2].r_addend
= r
[0].r_addend
;
10591 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10592 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10593 r
[2].r_addend
= r
[0].r_addend
+ 8;
10594 if (plt_static_chain
)
10596 r
[3].r_offset
= r
[2].r_offset
+ 4;
10597 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10598 r
[3].r_addend
= r
[0].r_addend
+ 16;
10603 if (ALWAYS_EMIT_R2SAVE
10604 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10605 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10608 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10609 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10613 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10614 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10617 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10619 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10622 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10627 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10628 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10630 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10631 if (plt_static_chain
)
10632 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10639 if (ALWAYS_EMIT_R2SAVE
10640 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10641 r
[0].r_offset
+= 4;
10642 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10645 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10647 r
[1].r_offset
= r
[0].r_offset
+ 4;
10648 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10649 r
[1].r_addend
= r
[0].r_addend
;
10653 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10654 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10655 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10656 if (plt_static_chain
)
10658 r
[2].r_offset
= r
[1].r_offset
+ 4;
10659 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10660 r
[2].r_addend
= r
[0].r_addend
+ 8;
10665 if (ALWAYS_EMIT_R2SAVE
10666 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10667 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10668 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10670 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10672 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10675 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10680 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10681 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10683 if (plt_static_chain
)
10684 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10685 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10688 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10690 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10691 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10692 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10695 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10699 /* Build a special .plt call stub for __tls_get_addr. */
10701 #define LD_R11_0R3 0xe9630000
10702 #define LD_R12_0R3 0xe9830000
10703 #define MR_R0_R3 0x7c601b78
10704 #define CMPDI_R11_0 0x2c2b0000
10705 #define ADD_R3_R12_R13 0x7c6c6a14
10706 #define BEQLR 0x4d820020
10707 #define MR_R3_R0 0x7c030378
10708 #define STD_R11_0R1 0xf9610000
10709 #define BCTRL 0x4e800421
10710 #define LD_R11_0R1 0xe9610000
10711 #define MTLR_R11 0x7d6803a6
10713 static inline bfd_byte
*
10714 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10715 struct ppc_stub_hash_entry
*stub_entry
,
10716 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10718 bfd
*obfd
= htab
->params
->stub_bfd
;
10720 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10721 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10722 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10723 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10724 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10725 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10726 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10727 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10728 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10731 r
[0].r_offset
+= 9 * 4;
10732 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10733 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10735 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10736 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10737 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10738 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10743 static Elf_Internal_Rela
*
10744 get_relocs (asection
*sec
, int count
)
10746 Elf_Internal_Rela
*relocs
;
10747 struct bfd_elf_section_data
*elfsec_data
;
10749 elfsec_data
= elf_section_data (sec
);
10750 relocs
= elfsec_data
->relocs
;
10751 if (relocs
== NULL
)
10753 bfd_size_type relsize
;
10754 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10755 relocs
= bfd_alloc (sec
->owner
, relsize
);
10756 if (relocs
== NULL
)
10758 elfsec_data
->relocs
= relocs
;
10759 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10760 sizeof (Elf_Internal_Shdr
));
10761 if (elfsec_data
->rela
.hdr
== NULL
)
10763 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10764 * sizeof (Elf64_External_Rela
));
10765 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10766 sec
->reloc_count
= 0;
10768 relocs
+= sec
->reloc_count
;
10769 sec
->reloc_count
+= count
;
10774 get_r2off (struct bfd_link_info
*info
,
10775 struct ppc_stub_hash_entry
*stub_entry
)
10777 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10778 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10782 /* Support linking -R objects. Get the toc pointer from the
10785 if (!htab
->opd_abi
)
10787 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10788 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10790 if (strcmp (opd
->name
, ".opd") != 0
10791 || opd
->reloc_count
!= 0)
10793 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10794 stub_entry
->h
->elf
.root
.root
.string
);
10795 bfd_set_error (bfd_error_bad_value
);
10796 return (bfd_vma
) -1;
10798 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10799 return (bfd_vma
) -1;
10800 r2off
= bfd_get_64 (opd
->owner
, buf
);
10801 r2off
-= elf_gp (info
->output_bfd
);
10803 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10808 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10810 struct ppc_stub_hash_entry
*stub_entry
;
10811 struct ppc_branch_hash_entry
*br_entry
;
10812 struct bfd_link_info
*info
;
10813 struct ppc_link_hash_table
*htab
;
10818 Elf_Internal_Rela
*r
;
10821 /* Massage our args to the form they really have. */
10822 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10825 htab
= ppc_hash_table (info
);
10829 /* Make a note of the offset within the stubs for this entry. */
10830 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10831 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10833 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10834 switch (stub_entry
->stub_type
)
10836 case ppc_stub_long_branch
:
10837 case ppc_stub_long_branch_r2off
:
10838 /* Branches are relative. This is where we are going to. */
10839 dest
= (stub_entry
->target_value
10840 + stub_entry
->target_section
->output_offset
10841 + stub_entry
->target_section
->output_section
->vma
);
10842 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10845 /* And this is where we are coming from. */
10846 off
-= (stub_entry
->stub_offset
10847 + stub_entry
->group
->stub_sec
->output_offset
10848 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10851 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10853 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10855 if (r2off
== (bfd_vma
) -1)
10857 htab
->stub_error
= TRUE
;
10860 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10863 if (PPC_HA (r2off
) != 0)
10865 bfd_put_32 (htab
->params
->stub_bfd
,
10866 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10870 if (PPC_LO (r2off
) != 0)
10872 bfd_put_32 (htab
->params
->stub_bfd
,
10873 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10879 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10881 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10883 info
->callbacks
->einfo
10884 (_("%P: long branch stub `%s' offset overflow\n"),
10885 stub_entry
->root
.string
);
10886 htab
->stub_error
= TRUE
;
10890 if (info
->emitrelocations
)
10892 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10895 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10896 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10897 r
->r_addend
= dest
;
10898 if (stub_entry
->h
!= NULL
)
10900 struct elf_link_hash_entry
**hashes
;
10901 unsigned long symndx
;
10902 struct ppc_link_hash_entry
*h
;
10904 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10905 if (hashes
== NULL
)
10907 bfd_size_type hsize
;
10909 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10910 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10911 if (hashes
== NULL
)
10913 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10914 htab
->stub_globals
= 1;
10916 symndx
= htab
->stub_globals
++;
10918 hashes
[symndx
] = &h
->elf
;
10919 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10920 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10921 h
= ppc_follow_link (h
->oh
);
10922 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10923 /* H is an opd symbol. The addend must be zero. */
10927 off
= (h
->elf
.root
.u
.def
.value
10928 + h
->elf
.root
.u
.def
.section
->output_offset
10929 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10930 r
->r_addend
-= off
;
10936 case ppc_stub_plt_branch
:
10937 case ppc_stub_plt_branch_r2off
:
10938 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10939 stub_entry
->root
.string
+ 9,
10941 if (br_entry
== NULL
)
10943 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10944 stub_entry
->root
.string
);
10945 htab
->stub_error
= TRUE
;
10949 dest
= (stub_entry
->target_value
10950 + stub_entry
->target_section
->output_offset
10951 + stub_entry
->target_section
->output_section
->vma
);
10952 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10953 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10955 bfd_put_64 (htab
->brlt
->owner
, dest
,
10956 htab
->brlt
->contents
+ br_entry
->offset
);
10958 if (br_entry
->iter
== htab
->stub_iteration
)
10960 br_entry
->iter
= 0;
10962 if (htab
->relbrlt
!= NULL
)
10964 /* Create a reloc for the branch lookup table entry. */
10965 Elf_Internal_Rela rela
;
10968 rela
.r_offset
= (br_entry
->offset
10969 + htab
->brlt
->output_offset
10970 + htab
->brlt
->output_section
->vma
);
10971 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10972 rela
.r_addend
= dest
;
10974 rl
= htab
->relbrlt
->contents
;
10975 rl
+= (htab
->relbrlt
->reloc_count
++
10976 * sizeof (Elf64_External_Rela
));
10977 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10979 else if (info
->emitrelocations
)
10981 r
= get_relocs (htab
->brlt
, 1);
10984 /* brlt, being SEC_LINKER_CREATED does not go through the
10985 normal reloc processing. Symbols and offsets are not
10986 translated from input file to output file form, so
10987 set up the offset per the output file. */
10988 r
->r_offset
= (br_entry
->offset
10989 + htab
->brlt
->output_offset
10990 + htab
->brlt
->output_section
->vma
);
10991 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10992 r
->r_addend
= dest
;
10996 dest
= (br_entry
->offset
10997 + htab
->brlt
->output_offset
10998 + htab
->brlt
->output_section
->vma
);
11001 - elf_gp (htab
->brlt
->output_section
->owner
)
11002 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11004 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11006 info
->callbacks
->einfo
11007 (_("%P: linkage table error against `%T'\n"),
11008 stub_entry
->root
.string
);
11009 bfd_set_error (bfd_error_bad_value
);
11010 htab
->stub_error
= TRUE
;
11014 if (info
->emitrelocations
)
11016 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11019 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11020 if (bfd_big_endian (info
->output_bfd
))
11021 r
[0].r_offset
+= 2;
11022 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11023 r
[0].r_offset
+= 4;
11024 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11025 r
[0].r_addend
= dest
;
11026 if (PPC_HA (off
) != 0)
11028 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11029 r
[1].r_offset
= r
[0].r_offset
+ 4;
11030 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11031 r
[1].r_addend
= r
[0].r_addend
;
11035 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11037 if (PPC_HA (off
) != 0)
11040 bfd_put_32 (htab
->params
->stub_bfd
,
11041 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11043 bfd_put_32 (htab
->params
->stub_bfd
,
11044 LD_R12_0R12
| PPC_LO (off
), loc
);
11049 bfd_put_32 (htab
->params
->stub_bfd
,
11050 LD_R12_0R2
| PPC_LO (off
), loc
);
11055 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11057 if (r2off
== (bfd_vma
) -1)
11059 htab
->stub_error
= TRUE
;
11063 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11066 if (PPC_HA (off
) != 0)
11069 bfd_put_32 (htab
->params
->stub_bfd
,
11070 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11072 bfd_put_32 (htab
->params
->stub_bfd
,
11073 LD_R12_0R12
| PPC_LO (off
), loc
);
11076 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11078 if (PPC_HA (r2off
) != 0)
11082 bfd_put_32 (htab
->params
->stub_bfd
,
11083 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11085 if (PPC_LO (r2off
) != 0)
11089 bfd_put_32 (htab
->params
->stub_bfd
,
11090 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11094 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11096 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11099 case ppc_stub_plt_call
:
11100 case ppc_stub_plt_call_r2save
:
11101 if (stub_entry
->h
!= NULL
11102 && stub_entry
->h
->is_func_descriptor
11103 && stub_entry
->h
->oh
!= NULL
)
11105 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11107 /* If the old-ABI "dot-symbol" is undefined make it weak so
11108 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11109 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11110 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11111 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11112 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11115 /* Now build the stub. */
11116 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11117 if (dest
>= (bfd_vma
) -2)
11120 plt
= htab
->elf
.splt
;
11121 if (!htab
->elf
.dynamic_sections_created
11122 || stub_entry
->h
== NULL
11123 || stub_entry
->h
->elf
.dynindx
== -1)
11124 plt
= htab
->elf
.iplt
;
11126 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11128 if (stub_entry
->h
== NULL
11129 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11131 Elf_Internal_Rela rela
;
11134 rela
.r_offset
= dest
;
11136 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11138 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11139 rela
.r_addend
= (stub_entry
->target_value
11140 + stub_entry
->target_section
->output_offset
11141 + stub_entry
->target_section
->output_section
->vma
);
11143 rl
= (htab
->elf
.irelplt
->contents
11144 + (htab
->elf
.irelplt
->reloc_count
++
11145 * sizeof (Elf64_External_Rela
)));
11146 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11147 stub_entry
->plt_ent
->plt
.offset
|= 1;
11151 - elf_gp (plt
->output_section
->owner
)
11152 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11154 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11156 info
->callbacks
->einfo
11157 /* xgettext:c-format */
11158 (_("%P: linkage table error against `%T'\n"),
11159 stub_entry
->h
!= NULL
11160 ? stub_entry
->h
->elf
.root
.root
.string
11162 bfd_set_error (bfd_error_bad_value
);
11163 htab
->stub_error
= TRUE
;
11167 if (htab
->params
->plt_stub_align
!= 0)
11169 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11171 stub_entry
->group
->stub_sec
->size
+= pad
;
11172 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11177 if (info
->emitrelocations
)
11179 r
= get_relocs (stub_entry
->group
->stub_sec
,
11180 ((PPC_HA (off
) != 0)
11182 ? 2 + (htab
->params
->plt_static_chain
11183 && PPC_HA (off
+ 16) == PPC_HA (off
))
11187 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11188 if (bfd_big_endian (info
->output_bfd
))
11189 r
[0].r_offset
+= 2;
11190 r
[0].r_addend
= dest
;
11192 if (stub_entry
->h
!= NULL
11193 && (stub_entry
->h
== htab
->tls_get_addr_fd
11194 || stub_entry
->h
== htab
->tls_get_addr
)
11195 && htab
->params
->tls_get_addr_opt
)
11196 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11198 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11202 case ppc_stub_save_res
:
11210 stub_entry
->group
->stub_sec
->size
+= size
;
11212 if (htab
->params
->emit_stub_syms
)
11214 struct elf_link_hash_entry
*h
;
11217 const char *const stub_str
[] = { "long_branch",
11218 "long_branch_r2off",
11220 "plt_branch_r2off",
11224 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11225 len2
= strlen (stub_entry
->root
.string
);
11226 name
= bfd_malloc (len1
+ len2
+ 2);
11229 memcpy (name
, stub_entry
->root
.string
, 9);
11230 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11231 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11232 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11235 if (h
->root
.type
== bfd_link_hash_new
)
11237 h
->root
.type
= bfd_link_hash_defined
;
11238 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11239 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11240 h
->ref_regular
= 1;
11241 h
->def_regular
= 1;
11242 h
->ref_regular_nonweak
= 1;
11243 h
->forced_local
= 1;
11245 h
->root
.linker_def
= 1;
11252 /* As above, but don't actually build the stub. Just bump offset so
11253 we know stub section sizes, and select plt_branch stubs where
11254 long_branch stubs won't do. */
11257 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11259 struct ppc_stub_hash_entry
*stub_entry
;
11260 struct bfd_link_info
*info
;
11261 struct ppc_link_hash_table
*htab
;
11265 /* Massage our args to the form they really have. */
11266 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11269 htab
= ppc_hash_table (info
);
11273 if (stub_entry
->h
!= NULL
11274 && stub_entry
->h
->save_res
11275 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11276 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11278 /* Don't make stubs to out-of-line register save/restore
11279 functions. Instead, emit copies of the functions. */
11280 stub_entry
->group
->needs_save_res
= 1;
11281 stub_entry
->stub_type
= ppc_stub_save_res
;
11285 if (stub_entry
->stub_type
== ppc_stub_plt_call
11286 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11289 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11290 if (off
>= (bfd_vma
) -2)
11292 plt
= htab
->elf
.splt
;
11293 if (!htab
->elf
.dynamic_sections_created
11294 || stub_entry
->h
== NULL
11295 || stub_entry
->h
->elf
.dynindx
== -1)
11296 plt
= htab
->elf
.iplt
;
11297 off
+= (plt
->output_offset
11298 + plt
->output_section
->vma
11299 - elf_gp (plt
->output_section
->owner
)
11300 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11302 size
= plt_stub_size (htab
, stub_entry
, off
);
11303 if (htab
->params
->plt_stub_align
)
11304 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11305 if (info
->emitrelocations
)
11307 stub_entry
->group
->stub_sec
->reloc_count
11308 += ((PPC_HA (off
) != 0)
11310 ? 2 + (htab
->params
->plt_static_chain
11311 && PPC_HA (off
+ 16) == PPC_HA (off
))
11313 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11318 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11321 bfd_vma local_off
= 0;
11323 off
= (stub_entry
->target_value
11324 + stub_entry
->target_section
->output_offset
11325 + stub_entry
->target_section
->output_section
->vma
);
11326 off
-= (stub_entry
->group
->stub_sec
->size
11327 + stub_entry
->group
->stub_sec
->output_offset
11328 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11330 /* Reset the stub type from the plt variant in case we now
11331 can reach with a shorter stub. */
11332 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11333 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11336 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11338 r2off
= get_r2off (info
, stub_entry
);
11339 if (r2off
== (bfd_vma
) -1)
11341 htab
->stub_error
= TRUE
;
11345 if (PPC_HA (r2off
) != 0)
11347 if (PPC_LO (r2off
) != 0)
11352 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11354 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11355 Do the same for -R objects without function descriptors. */
11356 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11357 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11359 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11361 struct ppc_branch_hash_entry
*br_entry
;
11363 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11364 stub_entry
->root
.string
+ 9,
11366 if (br_entry
== NULL
)
11368 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11369 stub_entry
->root
.string
);
11370 htab
->stub_error
= TRUE
;
11374 if (br_entry
->iter
!= htab
->stub_iteration
)
11376 br_entry
->iter
= htab
->stub_iteration
;
11377 br_entry
->offset
= htab
->brlt
->size
;
11378 htab
->brlt
->size
+= 8;
11380 if (htab
->relbrlt
!= NULL
)
11381 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11382 else if (info
->emitrelocations
)
11384 htab
->brlt
->reloc_count
+= 1;
11385 htab
->brlt
->flags
|= SEC_RELOC
;
11389 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11390 off
= (br_entry
->offset
11391 + htab
->brlt
->output_offset
11392 + htab
->brlt
->output_section
->vma
11393 - elf_gp (htab
->brlt
->output_section
->owner
)
11394 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11396 if (info
->emitrelocations
)
11398 stub_entry
->group
->stub_sec
->reloc_count
11399 += 1 + (PPC_HA (off
) != 0);
11400 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11403 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11406 if (PPC_HA (off
) != 0)
11412 if (PPC_HA (off
) != 0)
11415 if (PPC_HA (r2off
) != 0)
11417 if (PPC_LO (r2off
) != 0)
11421 else if (info
->emitrelocations
)
11423 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11424 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11428 stub_entry
->group
->stub_sec
->size
+= size
;
11432 /* Set up various things so that we can make a list of input sections
11433 for each output section included in the link. Returns -1 on error,
11434 0 when no stubs will be needed, and 1 on success. */
11437 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11441 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11446 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11447 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11448 htab
->sec_info
= bfd_zmalloc (amt
);
11449 if (htab
->sec_info
== NULL
)
11452 /* Set toc_off for com, und, abs and ind sections. */
11453 for (id
= 0; id
< 3; id
++)
11454 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11459 /* Set up for first pass at multitoc partitioning. */
11462 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11464 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11466 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11467 htab
->toc_bfd
= NULL
;
11468 htab
->toc_first_sec
= NULL
;
11471 /* The linker repeatedly calls this function for each TOC input section
11472 and linker generated GOT section. Group input bfds such that the toc
11473 within a group is less than 64k in size. */
11476 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11478 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11479 bfd_vma addr
, off
, limit
;
11484 if (!htab
->second_toc_pass
)
11486 /* Keep track of the first .toc or .got section for this input bfd. */
11487 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11491 htab
->toc_bfd
= isec
->owner
;
11492 htab
->toc_first_sec
= isec
;
11495 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11496 off
= addr
- htab
->toc_curr
;
11497 limit
= 0x80008000;
11498 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11500 if (off
+ isec
->size
> limit
)
11502 addr
= (htab
->toc_first_sec
->output_offset
11503 + htab
->toc_first_sec
->output_section
->vma
);
11504 htab
->toc_curr
= addr
;
11505 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11508 /* toc_curr is the base address of this toc group. Set elf_gp
11509 for the input section to be the offset relative to the
11510 output toc base plus 0x8000. Making the input elf_gp an
11511 offset allows us to move the toc as a whole without
11512 recalculating input elf_gp. */
11513 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11514 off
+= TOC_BASE_OFF
;
11516 /* Die if someone uses a linker script that doesn't keep input
11517 file .toc and .got together. */
11519 && elf_gp (isec
->owner
) != 0
11520 && elf_gp (isec
->owner
) != off
)
11523 elf_gp (isec
->owner
) = off
;
11527 /* During the second pass toc_first_sec points to the start of
11528 a toc group, and toc_curr is used to track the old elf_gp.
11529 We use toc_bfd to ensure we only look at each bfd once. */
11530 if (htab
->toc_bfd
== isec
->owner
)
11532 htab
->toc_bfd
= isec
->owner
;
11534 if (htab
->toc_first_sec
== NULL
11535 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11537 htab
->toc_curr
= elf_gp (isec
->owner
);
11538 htab
->toc_first_sec
= isec
;
11540 addr
= (htab
->toc_first_sec
->output_offset
11541 + htab
->toc_first_sec
->output_section
->vma
);
11542 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11543 elf_gp (isec
->owner
) = off
;
11548 /* Called via elf_link_hash_traverse to merge GOT entries for global
11552 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11554 if (h
->root
.type
== bfd_link_hash_indirect
)
11557 merge_got_entries (&h
->got
.glist
);
11562 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11566 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11568 struct got_entry
*gent
;
11570 if (h
->root
.type
== bfd_link_hash_indirect
)
11573 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11574 if (!gent
->is_indirect
)
11575 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11579 /* Called on the first multitoc pass after the last call to
11580 ppc64_elf_next_toc_section. This function removes duplicate GOT
11584 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11586 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11587 struct bfd
*ibfd
, *ibfd2
;
11588 bfd_boolean done_something
;
11590 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11592 if (!htab
->do_multi_toc
)
11595 /* Merge global sym got entries within a toc group. */
11596 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11598 /* And tlsld_got. */
11599 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11601 struct got_entry
*ent
, *ent2
;
11603 if (!is_ppc64_elf (ibfd
))
11606 ent
= ppc64_tlsld_got (ibfd
);
11607 if (!ent
->is_indirect
11608 && ent
->got
.offset
!= (bfd_vma
) -1)
11610 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11612 if (!is_ppc64_elf (ibfd2
))
11615 ent2
= ppc64_tlsld_got (ibfd2
);
11616 if (!ent2
->is_indirect
11617 && ent2
->got
.offset
!= (bfd_vma
) -1
11618 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11620 ent2
->is_indirect
= TRUE
;
11621 ent2
->got
.ent
= ent
;
11627 /* Zap sizes of got sections. */
11628 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11629 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11630 htab
->got_reli_size
= 0;
11632 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11634 asection
*got
, *relgot
;
11636 if (!is_ppc64_elf (ibfd
))
11639 got
= ppc64_elf_tdata (ibfd
)->got
;
11642 got
->rawsize
= got
->size
;
11644 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11645 relgot
->rawsize
= relgot
->size
;
11650 /* Now reallocate the got, local syms first. We don't need to
11651 allocate section contents again since we never increase size. */
11652 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11654 struct got_entry
**lgot_ents
;
11655 struct got_entry
**end_lgot_ents
;
11656 struct plt_entry
**local_plt
;
11657 struct plt_entry
**end_local_plt
;
11658 unsigned char *lgot_masks
;
11659 bfd_size_type locsymcount
;
11660 Elf_Internal_Shdr
*symtab_hdr
;
11663 if (!is_ppc64_elf (ibfd
))
11666 lgot_ents
= elf_local_got_ents (ibfd
);
11670 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11671 locsymcount
= symtab_hdr
->sh_info
;
11672 end_lgot_ents
= lgot_ents
+ locsymcount
;
11673 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11674 end_local_plt
= local_plt
+ locsymcount
;
11675 lgot_masks
= (unsigned char *) end_local_plt
;
11676 s
= ppc64_elf_tdata (ibfd
)->got
;
11677 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11679 struct got_entry
*ent
;
11681 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11683 unsigned int ent_size
= 8;
11684 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11686 ent
->got
.offset
= s
->size
;
11687 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11692 s
->size
+= ent_size
;
11693 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11695 htab
->elf
.irelplt
->size
+= rel_size
;
11696 htab
->got_reli_size
+= rel_size
;
11698 else if (bfd_link_pic (info
))
11700 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11701 srel
->size
+= rel_size
;
11707 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11709 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11711 struct got_entry
*ent
;
11713 if (!is_ppc64_elf (ibfd
))
11716 ent
= ppc64_tlsld_got (ibfd
);
11717 if (!ent
->is_indirect
11718 && ent
->got
.offset
!= (bfd_vma
) -1)
11720 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11721 ent
->got
.offset
= s
->size
;
11723 if (bfd_link_pic (info
))
11725 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11726 srel
->size
+= sizeof (Elf64_External_Rela
);
11731 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11732 if (!done_something
)
11733 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11737 if (!is_ppc64_elf (ibfd
))
11740 got
= ppc64_elf_tdata (ibfd
)->got
;
11743 done_something
= got
->rawsize
!= got
->size
;
11744 if (done_something
)
11749 if (done_something
)
11750 (*htab
->params
->layout_sections_again
) ();
11752 /* Set up for second pass over toc sections to recalculate elf_gp
11753 on input sections. */
11754 htab
->toc_bfd
= NULL
;
11755 htab
->toc_first_sec
= NULL
;
11756 htab
->second_toc_pass
= TRUE
;
11757 return done_something
;
11760 /* Called after second pass of multitoc partitioning. */
11763 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11765 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11767 /* After the second pass, toc_curr tracks the TOC offset used
11768 for code sections below in ppc64_elf_next_input_section. */
11769 htab
->toc_curr
= TOC_BASE_OFF
;
11772 /* No toc references were found in ISEC. If the code in ISEC makes no
11773 calls, then there's no need to use toc adjusting stubs when branching
11774 into ISEC. Actually, indirect calls from ISEC are OK as they will
11775 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11776 needed, and 2 if a cyclical call-graph was found but no other reason
11777 for a stub was detected. If called from the top level, a return of
11778 2 means the same as a return of 0. */
11781 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11785 /* Mark this section as checked. */
11786 isec
->call_check_done
= 1;
11788 /* We know none of our code bearing sections will need toc stubs. */
11789 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11792 if (isec
->size
== 0)
11795 if (isec
->output_section
== NULL
)
11799 if (isec
->reloc_count
!= 0)
11801 Elf_Internal_Rela
*relstart
, *rel
;
11802 Elf_Internal_Sym
*local_syms
;
11803 struct ppc_link_hash_table
*htab
;
11805 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11806 info
->keep_memory
);
11807 if (relstart
== NULL
)
11810 /* Look for branches to outside of this section. */
11812 htab
= ppc_hash_table (info
);
11816 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11818 enum elf_ppc64_reloc_type r_type
;
11819 unsigned long r_symndx
;
11820 struct elf_link_hash_entry
*h
;
11821 struct ppc_link_hash_entry
*eh
;
11822 Elf_Internal_Sym
*sym
;
11824 struct _opd_sec_data
*opd
;
11828 r_type
= ELF64_R_TYPE (rel
->r_info
);
11829 if (r_type
!= R_PPC64_REL24
11830 && r_type
!= R_PPC64_REL14
11831 && r_type
!= R_PPC64_REL14_BRTAKEN
11832 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11835 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11836 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11843 /* Calls to dynamic lib functions go through a plt call stub
11845 eh
= (struct ppc_link_hash_entry
*) h
;
11847 && (eh
->elf
.plt
.plist
!= NULL
11849 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11855 if (sym_sec
== NULL
)
11856 /* Ignore other undefined symbols. */
11859 /* Assume branches to other sections not included in the
11860 link need stubs too, to cover -R and absolute syms. */
11861 if (sym_sec
->output_section
== NULL
)
11868 sym_value
= sym
->st_value
;
11871 if (h
->root
.type
!= bfd_link_hash_defined
11872 && h
->root
.type
!= bfd_link_hash_defweak
)
11874 sym_value
= h
->root
.u
.def
.value
;
11876 sym_value
+= rel
->r_addend
;
11878 /* If this branch reloc uses an opd sym, find the code section. */
11879 opd
= get_opd_info (sym_sec
);
11882 if (h
== NULL
&& opd
->adjust
!= NULL
)
11886 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11888 /* Assume deleted functions won't ever be called. */
11890 sym_value
+= adjust
;
11893 dest
= opd_entry_value (sym_sec
, sym_value
,
11894 &sym_sec
, NULL
, FALSE
);
11895 if (dest
== (bfd_vma
) -1)
11900 + sym_sec
->output_offset
11901 + sym_sec
->output_section
->vma
);
11903 /* Ignore branch to self. */
11904 if (sym_sec
== isec
)
11907 /* If the called function uses the toc, we need a stub. */
11908 if (sym_sec
->has_toc_reloc
11909 || sym_sec
->makes_toc_func_call
)
11915 /* Assume any branch that needs a long branch stub might in fact
11916 need a plt_branch stub. A plt_branch stub uses r2. */
11917 else if (dest
- (isec
->output_offset
11918 + isec
->output_section
->vma
11919 + rel
->r_offset
) + (1 << 25)
11920 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11928 /* If calling back to a section in the process of being
11929 tested, we can't say for sure that no toc adjusting stubs
11930 are needed, so don't return zero. */
11931 else if (sym_sec
->call_check_in_progress
)
11934 /* Branches to another section that itself doesn't have any TOC
11935 references are OK. Recursively call ourselves to check. */
11936 else if (!sym_sec
->call_check_done
)
11940 /* Mark current section as indeterminate, so that other
11941 sections that call back to current won't be marked as
11943 isec
->call_check_in_progress
= 1;
11944 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11945 isec
->call_check_in_progress
= 0;
11956 if (local_syms
!= NULL
11957 && (elf_symtab_hdr (isec
->owner
).contents
11958 != (unsigned char *) local_syms
))
11960 if (elf_section_data (isec
)->relocs
!= relstart
)
11965 && isec
->map_head
.s
!= NULL
11966 && (strcmp (isec
->output_section
->name
, ".init") == 0
11967 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11969 if (isec
->map_head
.s
->has_toc_reloc
11970 || isec
->map_head
.s
->makes_toc_func_call
)
11972 else if (!isec
->map_head
.s
->call_check_done
)
11975 isec
->call_check_in_progress
= 1;
11976 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11977 isec
->call_check_in_progress
= 0;
11984 isec
->makes_toc_func_call
= 1;
11989 /* The linker repeatedly calls this function for each input section,
11990 in the order that input sections are linked into output sections.
11991 Build lists of input sections to determine groupings between which
11992 we may insert linker stubs. */
11995 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11997 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12002 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12003 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12005 /* This happens to make the list in reverse order,
12006 which is what we want. */
12007 htab
->sec_info
[isec
->id
].u
.list
12008 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12009 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12012 if (htab
->multi_toc_needed
)
12014 /* Analyse sections that aren't already flagged as needing a
12015 valid toc pointer. Exclude .fixup for the linux kernel.
12016 .fixup contains branches, but only back to the function that
12017 hit an exception. */
12018 if (!(isec
->has_toc_reloc
12019 || (isec
->flags
& SEC_CODE
) == 0
12020 || strcmp (isec
->name
, ".fixup") == 0
12021 || isec
->call_check_done
))
12023 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12026 /* Make all sections use the TOC assigned for this object file.
12027 This will be wrong for pasted sections; We fix that in
12028 check_pasted_section(). */
12029 if (elf_gp (isec
->owner
) != 0)
12030 htab
->toc_curr
= elf_gp (isec
->owner
);
12033 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12037 /* Check that all .init and .fini sections use the same toc, if they
12038 have toc relocs. */
12041 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12043 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12047 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12048 bfd_vma toc_off
= 0;
12051 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12052 if (i
->has_toc_reloc
)
12055 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12056 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12061 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12062 if (i
->makes_toc_func_call
)
12064 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12068 /* Make sure the whole pasted function uses the same toc offset. */
12070 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12071 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12077 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12079 return (check_pasted_section (info
, ".init")
12080 & check_pasted_section (info
, ".fini"));
12083 /* See whether we can group stub sections together. Grouping stub
12084 sections may result in fewer stubs. More importantly, we need to
12085 put all .init* and .fini* stubs at the beginning of the .init or
12086 .fini output sections respectively, because glibc splits the
12087 _init and _fini functions into multiple parts. Putting a stub in
12088 the middle of a function is not a good idea. */
12091 group_sections (struct bfd_link_info
*info
,
12092 bfd_size_type stub_group_size
,
12093 bfd_boolean stubs_always_before_branch
)
12095 struct ppc_link_hash_table
*htab
;
12097 bfd_boolean suppress_size_errors
;
12099 htab
= ppc_hash_table (info
);
12103 suppress_size_errors
= FALSE
;
12104 if (stub_group_size
== 1)
12106 /* Default values. */
12107 if (stubs_always_before_branch
)
12108 stub_group_size
= 0x1e00000;
12110 stub_group_size
= 0x1c00000;
12111 suppress_size_errors
= TRUE
;
12114 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12118 if (osec
->id
>= htab
->sec_info_arr_size
)
12121 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12122 while (tail
!= NULL
)
12126 bfd_size_type total
;
12127 bfd_boolean big_sec
;
12129 struct map_stub
*group
;
12130 bfd_size_type group_size
;
12133 total
= tail
->size
;
12134 group_size
= (ppc64_elf_section_data (tail
) != NULL
12135 && ppc64_elf_section_data (tail
)->has_14bit_branch
12136 ? stub_group_size
>> 10 : stub_group_size
);
12138 big_sec
= total
> group_size
;
12139 if (big_sec
&& !suppress_size_errors
)
12140 /* xgettext:c-format */
12141 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12142 tail
->owner
, tail
);
12143 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12145 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12146 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12147 < (ppc64_elf_section_data (prev
) != NULL
12148 && ppc64_elf_section_data (prev
)->has_14bit_branch
12149 ? (group_size
= stub_group_size
>> 10) : group_size
))
12150 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12153 /* OK, the size from the start of CURR to the end is less
12154 than group_size and thus can be handled by one stub
12155 section. (or the tail section is itself larger than
12156 group_size, in which case we may be toast.) We should
12157 really be keeping track of the total size of stubs added
12158 here, as stubs contribute to the final output section
12159 size. That's a little tricky, and this way will only
12160 break if stubs added make the total size more than 2^25,
12161 ie. for the default stub_group_size, if stubs total more
12162 than 2097152 bytes, or nearly 75000 plt call stubs. */
12163 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12166 group
->link_sec
= curr
;
12167 group
->stub_sec
= NULL
;
12168 group
->needs_save_res
= 0;
12169 group
->next
= htab
->group
;
12170 htab
->group
= group
;
12173 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12174 /* Set up this stub group. */
12175 htab
->sec_info
[tail
->id
].u
.group
= group
;
12177 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12179 /* But wait, there's more! Input sections up to group_size
12180 bytes before the stub section can be handled by it too.
12181 Don't do this if we have a really large section after the
12182 stubs, as adding more stubs increases the chance that
12183 branches may not reach into the stub section. */
12184 if (!stubs_always_before_branch
&& !big_sec
)
12187 while (prev
!= NULL
12188 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12189 < (ppc64_elf_section_data (prev
) != NULL
12190 && ppc64_elf_section_data (prev
)->has_14bit_branch
12191 ? (group_size
= stub_group_size
>> 10) : group_size
))
12192 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12195 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12196 htab
->sec_info
[tail
->id
].u
.group
= group
;
12205 static const unsigned char glink_eh_frame_cie
[] =
12207 0, 0, 0, 16, /* length. */
12208 0, 0, 0, 0, /* id. */
12209 1, /* CIE version. */
12210 'z', 'R', 0, /* Augmentation string. */
12211 4, /* Code alignment. */
12212 0x78, /* Data alignment. */
12214 1, /* Augmentation size. */
12215 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12216 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
12220 /* Stripping output sections is normally done before dynamic section
12221 symbols have been allocated. This function is called later, and
12222 handles cases like htab->brlt which is mapped to its own output
12226 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12228 if (isec
->size
== 0
12229 && isec
->output_section
->size
== 0
12230 && !(isec
->output_section
->flags
& SEC_KEEP
)
12231 && !bfd_section_removed_from_list (info
->output_bfd
,
12232 isec
->output_section
)
12233 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12235 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12236 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12237 info
->output_bfd
->section_count
--;
12241 /* Determine and set the size of the stub section for a final link.
12243 The basic idea here is to examine all the relocations looking for
12244 PC-relative calls to a target that is unreachable with a "bl"
12248 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12250 bfd_size_type stub_group_size
;
12251 bfd_boolean stubs_always_before_branch
;
12252 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12257 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12258 htab
->params
->plt_thread_safe
= 1;
12259 if (!htab
->opd_abi
)
12260 htab
->params
->plt_thread_safe
= 0;
12261 else if (htab
->params
->plt_thread_safe
== -1)
12263 static const char *const thread_starter
[] =
12267 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12269 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12270 "mq_notify", "create_timer",
12275 "GOMP_parallel_start",
12276 "GOMP_parallel_loop_static",
12277 "GOMP_parallel_loop_static_start",
12278 "GOMP_parallel_loop_dynamic",
12279 "GOMP_parallel_loop_dynamic_start",
12280 "GOMP_parallel_loop_guided",
12281 "GOMP_parallel_loop_guided_start",
12282 "GOMP_parallel_loop_runtime",
12283 "GOMP_parallel_loop_runtime_start",
12284 "GOMP_parallel_sections",
12285 "GOMP_parallel_sections_start",
12291 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12293 struct elf_link_hash_entry
*h
;
12294 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12295 FALSE
, FALSE
, TRUE
);
12296 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12297 if (htab
->params
->plt_thread_safe
)
12301 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12302 if (htab
->params
->group_size
< 0)
12303 stub_group_size
= -htab
->params
->group_size
;
12305 stub_group_size
= htab
->params
->group_size
;
12307 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12310 #define STUB_SHRINK_ITER 20
12311 /* Loop until no stubs added. After iteration 20 of this loop we may
12312 exit on a stub section shrinking. This is to break out of a
12313 pathological case where adding stubs on one iteration decreases
12314 section gaps (perhaps due to alignment), which then requires
12315 fewer or smaller stubs on the next iteration. */
12320 unsigned int bfd_indx
;
12321 struct map_stub
*group
;
12322 asection
*stub_sec
;
12324 htab
->stub_iteration
+= 1;
12326 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12328 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12330 Elf_Internal_Shdr
*symtab_hdr
;
12332 Elf_Internal_Sym
*local_syms
= NULL
;
12334 if (!is_ppc64_elf (input_bfd
))
12337 /* We'll need the symbol table in a second. */
12338 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12339 if (symtab_hdr
->sh_info
== 0)
12342 /* Walk over each section attached to the input bfd. */
12343 for (section
= input_bfd
->sections
;
12345 section
= section
->next
)
12347 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12349 /* If there aren't any relocs, then there's nothing more
12351 if ((section
->flags
& SEC_RELOC
) == 0
12352 || (section
->flags
& SEC_ALLOC
) == 0
12353 || (section
->flags
& SEC_LOAD
) == 0
12354 || (section
->flags
& SEC_CODE
) == 0
12355 || section
->reloc_count
== 0)
12358 /* If this section is a link-once section that will be
12359 discarded, then don't create any stubs. */
12360 if (section
->output_section
== NULL
12361 || section
->output_section
->owner
!= info
->output_bfd
)
12364 /* Get the relocs. */
12366 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12367 info
->keep_memory
);
12368 if (internal_relocs
== NULL
)
12369 goto error_ret_free_local
;
12371 /* Now examine each relocation. */
12372 irela
= internal_relocs
;
12373 irelaend
= irela
+ section
->reloc_count
;
12374 for (; irela
< irelaend
; irela
++)
12376 enum elf_ppc64_reloc_type r_type
;
12377 unsigned int r_indx
;
12378 enum ppc_stub_type stub_type
;
12379 struct ppc_stub_hash_entry
*stub_entry
;
12380 asection
*sym_sec
, *code_sec
;
12381 bfd_vma sym_value
, code_value
;
12382 bfd_vma destination
;
12383 unsigned long local_off
;
12384 bfd_boolean ok_dest
;
12385 struct ppc_link_hash_entry
*hash
;
12386 struct ppc_link_hash_entry
*fdh
;
12387 struct elf_link_hash_entry
*h
;
12388 Elf_Internal_Sym
*sym
;
12390 const asection
*id_sec
;
12391 struct _opd_sec_data
*opd
;
12392 struct plt_entry
*plt_ent
;
12394 r_type
= ELF64_R_TYPE (irela
->r_info
);
12395 r_indx
= ELF64_R_SYM (irela
->r_info
);
12397 if (r_type
>= R_PPC64_max
)
12399 bfd_set_error (bfd_error_bad_value
);
12400 goto error_ret_free_internal
;
12403 /* Only look for stubs on branch instructions. */
12404 if (r_type
!= R_PPC64_REL24
12405 && r_type
!= R_PPC64_REL14
12406 && r_type
!= R_PPC64_REL14_BRTAKEN
12407 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12410 /* Now determine the call target, its name, value,
12412 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12413 r_indx
, input_bfd
))
12414 goto error_ret_free_internal
;
12415 hash
= (struct ppc_link_hash_entry
*) h
;
12422 sym_value
= sym
->st_value
;
12423 if (sym_sec
!= NULL
12424 && sym_sec
->output_section
!= NULL
)
12427 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12428 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12430 sym_value
= hash
->elf
.root
.u
.def
.value
;
12431 if (sym_sec
->output_section
!= NULL
)
12434 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12435 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12437 /* Recognise an old ABI func code entry sym, and
12438 use the func descriptor sym instead if it is
12440 if (hash
->elf
.root
.root
.string
[0] == '.'
12441 && hash
->oh
!= NULL
)
12443 fdh
= ppc_follow_link (hash
->oh
);
12444 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12445 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12447 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12448 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12449 if (sym_sec
->output_section
!= NULL
)
12458 bfd_set_error (bfd_error_bad_value
);
12459 goto error_ret_free_internal
;
12466 sym_value
+= irela
->r_addend
;
12467 destination
= (sym_value
12468 + sym_sec
->output_offset
12469 + sym_sec
->output_section
->vma
);
12470 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12475 code_sec
= sym_sec
;
12476 code_value
= sym_value
;
12477 opd
= get_opd_info (sym_sec
);
12482 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12484 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12487 code_value
+= adjust
;
12488 sym_value
+= adjust
;
12490 dest
= opd_entry_value (sym_sec
, sym_value
,
12491 &code_sec
, &code_value
, FALSE
);
12492 if (dest
!= (bfd_vma
) -1)
12494 destination
= dest
;
12497 /* Fixup old ABI sym to point at code
12499 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12500 hash
->elf
.root
.u
.def
.section
= code_sec
;
12501 hash
->elf
.root
.u
.def
.value
= code_value
;
12506 /* Determine what (if any) linker stub is needed. */
12508 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12509 &plt_ent
, destination
,
12512 if (stub_type
!= ppc_stub_plt_call
)
12514 /* Check whether we need a TOC adjusting stub.
12515 Since the linker pastes together pieces from
12516 different object files when creating the
12517 _init and _fini functions, it may be that a
12518 call to what looks like a local sym is in
12519 fact a call needing a TOC adjustment. */
12520 if (code_sec
!= NULL
12521 && code_sec
->output_section
!= NULL
12522 && (htab
->sec_info
[code_sec
->id
].toc_off
12523 != htab
->sec_info
[section
->id
].toc_off
)
12524 && (code_sec
->has_toc_reloc
12525 || code_sec
->makes_toc_func_call
))
12526 stub_type
= ppc_stub_long_branch_r2off
;
12529 if (stub_type
== ppc_stub_none
)
12532 /* __tls_get_addr calls might be eliminated. */
12533 if (stub_type
!= ppc_stub_plt_call
12535 && (hash
== htab
->tls_get_addr
12536 || hash
== htab
->tls_get_addr_fd
)
12537 && section
->has_tls_reloc
12538 && irela
!= internal_relocs
)
12540 /* Get tls info. */
12541 unsigned char *tls_mask
;
12543 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12544 irela
- 1, input_bfd
))
12545 goto error_ret_free_internal
;
12546 if (*tls_mask
!= 0)
12550 if (stub_type
== ppc_stub_plt_call
12551 && irela
+ 1 < irelaend
12552 && irela
[1].r_offset
== irela
->r_offset
+ 4
12553 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12555 if (!tocsave_find (htab
, INSERT
,
12556 &local_syms
, irela
+ 1, input_bfd
))
12557 goto error_ret_free_internal
;
12559 else if (stub_type
== ppc_stub_plt_call
)
12560 stub_type
= ppc_stub_plt_call_r2save
;
12562 /* Support for grouping stub sections. */
12563 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12565 /* Get the name of this stub. */
12566 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12568 goto error_ret_free_internal
;
12570 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12571 stub_name
, FALSE
, FALSE
);
12572 if (stub_entry
!= NULL
)
12574 /* The proper stub has already been created. */
12576 if (stub_type
== ppc_stub_plt_call_r2save
)
12577 stub_entry
->stub_type
= stub_type
;
12581 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12582 if (stub_entry
== NULL
)
12585 error_ret_free_internal
:
12586 if (elf_section_data (section
)->relocs
== NULL
)
12587 free (internal_relocs
);
12588 error_ret_free_local
:
12589 if (local_syms
!= NULL
12590 && (symtab_hdr
->contents
12591 != (unsigned char *) local_syms
))
12596 stub_entry
->stub_type
= stub_type
;
12597 if (stub_type
!= ppc_stub_plt_call
12598 && stub_type
!= ppc_stub_plt_call_r2save
)
12600 stub_entry
->target_value
= code_value
;
12601 stub_entry
->target_section
= code_sec
;
12605 stub_entry
->target_value
= sym_value
;
12606 stub_entry
->target_section
= sym_sec
;
12608 stub_entry
->h
= hash
;
12609 stub_entry
->plt_ent
= plt_ent
;
12610 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12612 if (stub_entry
->h
!= NULL
)
12613 htab
->stub_globals
+= 1;
12616 /* We're done with the internal relocs, free them. */
12617 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12618 free (internal_relocs
);
12621 if (local_syms
!= NULL
12622 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12624 if (!info
->keep_memory
)
12627 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12631 /* We may have added some stubs. Find out the new size of the
12633 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12635 stub_sec
= stub_sec
->next
)
12636 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12638 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12639 || stub_sec
->rawsize
< stub_sec
->size
)
12640 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12641 stub_sec
->rawsize
= stub_sec
->size
;
12642 stub_sec
->size
= 0;
12643 stub_sec
->reloc_count
= 0;
12644 stub_sec
->flags
&= ~SEC_RELOC
;
12647 htab
->brlt
->size
= 0;
12648 htab
->brlt
->reloc_count
= 0;
12649 htab
->brlt
->flags
&= ~SEC_RELOC
;
12650 if (htab
->relbrlt
!= NULL
)
12651 htab
->relbrlt
->size
= 0;
12653 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12655 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12656 if (group
->needs_save_res
)
12657 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12659 if (info
->emitrelocations
12660 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12662 htab
->glink
->reloc_count
= 1;
12663 htab
->glink
->flags
|= SEC_RELOC
;
12666 if (htab
->glink_eh_frame
!= NULL
12667 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12668 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12670 size_t size
= 0, align
;
12672 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12674 stub_sec
= stub_sec
->next
)
12675 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12677 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12680 size
+= sizeof (glink_eh_frame_cie
);
12682 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12684 size
= (size
+ align
) & ~align
;
12685 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12686 htab
->glink_eh_frame
->size
= size
;
12689 if (htab
->params
->plt_stub_align
!= 0)
12690 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12692 stub_sec
= stub_sec
->next
)
12693 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12694 stub_sec
->size
= ((stub_sec
->size
12695 + (1 << htab
->params
->plt_stub_align
) - 1)
12696 & -(1 << htab
->params
->plt_stub_align
));
12698 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12700 stub_sec
= stub_sec
->next
)
12701 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12702 && stub_sec
->rawsize
!= stub_sec
->size
12703 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12704 || stub_sec
->rawsize
< stub_sec
->size
))
12707 if (stub_sec
== NULL
12708 && (htab
->glink_eh_frame
== NULL
12709 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12712 /* Ask the linker to do its stuff. */
12713 (*htab
->params
->layout_sections_again
) ();
12716 if (htab
->glink_eh_frame
!= NULL
12717 && htab
->glink_eh_frame
->size
!= 0)
12720 bfd_byte
*p
, *last_fde
;
12721 size_t last_fde_len
, size
, align
, pad
;
12722 asection
*stub_sec
;
12724 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12727 htab
->glink_eh_frame
->contents
= p
;
12730 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12731 /* CIE length (rewrite in case little-endian). */
12732 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12733 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12734 p
+= sizeof (glink_eh_frame_cie
);
12736 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12738 stub_sec
= stub_sec
->next
)
12739 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12744 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12747 val
= p
- htab
->glink_eh_frame
->contents
;
12748 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12750 /* Offset to stub section, written later. */
12752 /* stub section size. */
12753 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12755 /* Augmentation. */
12760 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12765 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12768 val
= p
- htab
->glink_eh_frame
->contents
;
12769 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12771 /* Offset to .glink, written later. */
12774 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12776 /* Augmentation. */
12779 *p
++ = DW_CFA_advance_loc
+ 1;
12780 *p
++ = DW_CFA_register
;
12782 *p
++ = htab
->opd_abi
? 12 : 0;
12783 *p
++ = DW_CFA_advance_loc
+ 4;
12784 *p
++ = DW_CFA_restore_extended
;
12787 /* Subsume any padding into the last FDE if user .eh_frame
12788 sections are aligned more than glink_eh_frame. Otherwise any
12789 zero padding will be seen as a terminator. */
12790 size
= p
- htab
->glink_eh_frame
->contents
;
12792 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12794 pad
= ((size
+ align
) & ~align
) - size
;
12795 htab
->glink_eh_frame
->size
= size
+ pad
;
12796 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12799 maybe_strip_output (info
, htab
->brlt
);
12800 if (htab
->glink_eh_frame
!= NULL
)
12801 maybe_strip_output (info
, htab
->glink_eh_frame
);
12806 /* Called after we have determined section placement. If sections
12807 move, we'll be called again. Provide a value for TOCstart. */
12810 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12813 bfd_vma TOCstart
, adjust
;
12817 struct elf_link_hash_entry
*h
;
12818 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12820 if (is_elf_hash_table (htab
)
12821 && htab
->hgot
!= NULL
)
12825 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12826 if (is_elf_hash_table (htab
))
12830 && h
->root
.type
== bfd_link_hash_defined
12831 && !h
->root
.linker_def
12832 && (!is_elf_hash_table (htab
)
12833 || h
->def_regular
))
12835 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12836 + h
->root
.u
.def
.section
->output_offset
12837 + h
->root
.u
.def
.section
->output_section
->vma
);
12838 _bfd_set_gp_value (obfd
, TOCstart
);
12843 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12844 order. The TOC starts where the first of these sections starts. */
12845 s
= bfd_get_section_by_name (obfd
, ".got");
12846 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12847 s
= bfd_get_section_by_name (obfd
, ".toc");
12848 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12849 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12850 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12851 s
= bfd_get_section_by_name (obfd
, ".plt");
12852 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12854 /* This may happen for
12855 o references to TOC base (SYM@toc / TOC[tc0]) without a
12857 o bad linker script
12858 o --gc-sections and empty TOC sections
12860 FIXME: Warn user? */
12862 /* Look for a likely section. We probably won't even be
12864 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12865 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12867 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12870 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12871 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12872 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12875 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12876 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12880 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12881 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12887 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12889 /* Force alignment. */
12890 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12891 TOCstart
-= adjust
;
12892 _bfd_set_gp_value (obfd
, TOCstart
);
12894 if (info
!= NULL
&& s
!= NULL
)
12896 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12900 if (htab
->elf
.hgot
!= NULL
)
12902 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12903 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12908 struct bfd_link_hash_entry
*bh
= NULL
;
12909 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12910 s
, TOC_BASE_OFF
- adjust
,
12911 NULL
, FALSE
, FALSE
, &bh
);
12917 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12918 write out any global entry stubs. */
12921 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12923 struct bfd_link_info
*info
;
12924 struct ppc_link_hash_table
*htab
;
12925 struct plt_entry
*pent
;
12928 if (h
->root
.type
== bfd_link_hash_indirect
)
12931 if (!h
->pointer_equality_needed
)
12934 if (h
->def_regular
)
12938 htab
= ppc_hash_table (info
);
12943 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12944 if (pent
->plt
.offset
!= (bfd_vma
) -1
12945 && pent
->addend
== 0)
12951 p
= s
->contents
+ h
->root
.u
.def
.value
;
12952 plt
= htab
->elf
.splt
;
12953 if (!htab
->elf
.dynamic_sections_created
12954 || h
->dynindx
== -1)
12955 plt
= htab
->elf
.iplt
;
12956 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12957 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12959 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12961 info
->callbacks
->einfo
12962 (_("%P: linkage table error against `%T'\n"),
12963 h
->root
.root
.string
);
12964 bfd_set_error (bfd_error_bad_value
);
12965 htab
->stub_error
= TRUE
;
12968 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12969 if (htab
->params
->emit_stub_syms
)
12971 size_t len
= strlen (h
->root
.root
.string
);
12972 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12977 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12978 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12981 if (h
->root
.type
== bfd_link_hash_new
)
12983 h
->root
.type
= bfd_link_hash_defined
;
12984 h
->root
.u
.def
.section
= s
;
12985 h
->root
.u
.def
.value
= p
- s
->contents
;
12986 h
->ref_regular
= 1;
12987 h
->def_regular
= 1;
12988 h
->ref_regular_nonweak
= 1;
12989 h
->forced_local
= 1;
12991 h
->root
.linker_def
= 1;
12995 if (PPC_HA (off
) != 0)
12997 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13000 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13002 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13004 bfd_put_32 (s
->owner
, BCTR
, p
);
13010 /* Build all the stubs associated with the current output file.
13011 The stubs are kept in a hash table attached to the main linker
13012 hash table. This function is called via gldelf64ppc_finish. */
13015 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13018 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13019 struct map_stub
*group
;
13020 asection
*stub_sec
;
13022 int stub_sec_count
= 0;
13027 /* Allocate memory to hold the linker stubs. */
13028 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13030 stub_sec
= stub_sec
->next
)
13031 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
13032 && stub_sec
->size
!= 0)
13034 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13035 if (stub_sec
->contents
== NULL
)
13037 stub_sec
->size
= 0;
13040 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13045 /* Build the .glink plt call stub. */
13046 if (htab
->params
->emit_stub_syms
)
13048 struct elf_link_hash_entry
*h
;
13049 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13050 TRUE
, FALSE
, FALSE
);
13053 if (h
->root
.type
== bfd_link_hash_new
)
13055 h
->root
.type
= bfd_link_hash_defined
;
13056 h
->root
.u
.def
.section
= htab
->glink
;
13057 h
->root
.u
.def
.value
= 8;
13058 h
->ref_regular
= 1;
13059 h
->def_regular
= 1;
13060 h
->ref_regular_nonweak
= 1;
13061 h
->forced_local
= 1;
13063 h
->root
.linker_def
= 1;
13066 plt0
= (htab
->elf
.splt
->output_section
->vma
13067 + htab
->elf
.splt
->output_offset
13069 if (info
->emitrelocations
)
13071 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13074 r
->r_offset
= (htab
->glink
->output_offset
13075 + htab
->glink
->output_section
->vma
);
13076 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13077 r
->r_addend
= plt0
;
13079 p
= htab
->glink
->contents
;
13080 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13081 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13085 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13087 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13089 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13091 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13093 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13095 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13097 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13099 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13101 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13103 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13108 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13110 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13112 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13114 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13116 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13118 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13120 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13122 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13124 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13126 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13128 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13130 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13133 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13135 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13137 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13141 /* Build the .glink lazy link call stubs. */
13143 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13149 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13154 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13156 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13161 bfd_put_32 (htab
->glink
->owner
,
13162 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13167 /* Build .glink global entry stubs. */
13168 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13169 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13172 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13174 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13176 if (htab
->brlt
->contents
== NULL
)
13179 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13181 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13182 htab
->relbrlt
->size
);
13183 if (htab
->relbrlt
->contents
== NULL
)
13187 /* Build the stubs as directed by the stub hash table. */
13188 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13190 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13191 if (group
->needs_save_res
)
13193 stub_sec
= group
->stub_sec
;
13194 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13196 if (htab
->params
->emit_stub_syms
)
13200 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13201 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13204 stub_sec
->size
+= htab
->sfpr
->size
;
13207 if (htab
->relbrlt
!= NULL
)
13208 htab
->relbrlt
->reloc_count
= 0;
13210 if (htab
->params
->plt_stub_align
!= 0)
13211 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13213 stub_sec
= stub_sec
->next
)
13214 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13215 stub_sec
->size
= ((stub_sec
->size
13216 + (1 << htab
->params
->plt_stub_align
) - 1)
13217 & -(1 << htab
->params
->plt_stub_align
));
13219 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13221 stub_sec
= stub_sec
->next
)
13222 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13224 stub_sec_count
+= 1;
13225 if (stub_sec
->rawsize
!= stub_sec
->size
13226 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13227 || stub_sec
->rawsize
< stub_sec
->size
))
13231 /* Note that the glink_eh_frame check here is not only testing that
13232 the generated size matched the calculated size but also that
13233 bfd_elf_discard_info didn't make any changes to the section. */
13234 if (stub_sec
!= NULL
13235 || (htab
->glink_eh_frame
!= NULL
13236 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13238 htab
->stub_error
= TRUE
;
13239 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13242 if (htab
->stub_error
)
13247 *stats
= bfd_malloc (500);
13248 if (*stats
== NULL
)
13251 sprintf (*stats
, _("linker stubs in %u group%s\n"
13253 " toc adjust %lu\n"
13254 " long branch %lu\n"
13255 " long toc adj %lu\n"
13257 " plt call toc %lu\n"
13258 " global entry %lu"),
13260 stub_sec_count
== 1 ? "" : "s",
13261 htab
->stub_count
[ppc_stub_long_branch
- 1],
13262 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13263 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13264 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13265 htab
->stub_count
[ppc_stub_plt_call
- 1],
13266 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13267 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13272 /* What to do when ld finds relocations against symbols defined in
13273 discarded sections. */
13275 static unsigned int
13276 ppc64_elf_action_discarded (asection
*sec
)
13278 if (strcmp (".opd", sec
->name
) == 0)
13281 if (strcmp (".toc", sec
->name
) == 0)
13284 if (strcmp (".toc1", sec
->name
) == 0)
13287 return _bfd_elf_default_action_discarded (sec
);
13290 /* The RELOCATE_SECTION function is called by the ELF backend linker
13291 to handle the relocations for a section.
13293 The relocs are always passed as Rela structures; if the section
13294 actually uses Rel structures, the r_addend field will always be
13297 This function is responsible for adjust the section contents as
13298 necessary, and (if using Rela relocs and generating a
13299 relocatable output file) adjusting the reloc addend as
13302 This function does not have to worry about setting the reloc
13303 address or the reloc symbol index.
13305 LOCAL_SYMS is a pointer to the swapped in local symbols.
13307 LOCAL_SECTIONS is an array giving the section in the input file
13308 corresponding to the st_shndx field of each local symbol.
13310 The global hash table entry for the global symbols can be found
13311 via elf_sym_hashes (input_bfd).
13313 When generating relocatable output, this function must handle
13314 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13315 going to be the section symbol corresponding to the output
13316 section, which means that the addend must be adjusted
13320 ppc64_elf_relocate_section (bfd
*output_bfd
,
13321 struct bfd_link_info
*info
,
13323 asection
*input_section
,
13324 bfd_byte
*contents
,
13325 Elf_Internal_Rela
*relocs
,
13326 Elf_Internal_Sym
*local_syms
,
13327 asection
**local_sections
)
13329 struct ppc_link_hash_table
*htab
;
13330 Elf_Internal_Shdr
*symtab_hdr
;
13331 struct elf_link_hash_entry
**sym_hashes
;
13332 Elf_Internal_Rela
*rel
;
13333 Elf_Internal_Rela
*wrel
;
13334 Elf_Internal_Rela
*relend
;
13335 Elf_Internal_Rela outrel
;
13337 struct got_entry
**local_got_ents
;
13339 bfd_boolean ret
= TRUE
;
13340 bfd_boolean is_opd
;
13341 /* Assume 'at' branch hints. */
13342 bfd_boolean is_isa_v2
= TRUE
;
13343 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13345 /* Initialize howto table if needed. */
13346 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13349 htab
= ppc_hash_table (info
);
13353 /* Don't relocate stub sections. */
13354 if (input_section
->owner
== htab
->params
->stub_bfd
)
13357 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13359 local_got_ents
= elf_local_got_ents (input_bfd
);
13360 TOCstart
= elf_gp (output_bfd
);
13361 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13362 sym_hashes
= elf_sym_hashes (input_bfd
);
13363 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13365 rel
= wrel
= relocs
;
13366 relend
= relocs
+ input_section
->reloc_count
;
13367 for (; rel
< relend
; wrel
++, rel
++)
13369 enum elf_ppc64_reloc_type r_type
;
13371 bfd_reloc_status_type r
;
13372 Elf_Internal_Sym
*sym
;
13374 struct elf_link_hash_entry
*h_elf
;
13375 struct ppc_link_hash_entry
*h
;
13376 struct ppc_link_hash_entry
*fdh
;
13377 const char *sym_name
;
13378 unsigned long r_symndx
, toc_symndx
;
13379 bfd_vma toc_addend
;
13380 unsigned char tls_mask
, tls_gd
, tls_type
;
13381 unsigned char sym_type
;
13382 bfd_vma relocation
;
13383 bfd_boolean unresolved_reloc
;
13384 bfd_boolean warned
;
13385 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13388 struct ppc_stub_hash_entry
*stub_entry
;
13389 bfd_vma max_br_offset
;
13391 Elf_Internal_Rela orig_rel
;
13392 reloc_howto_type
*howto
;
13393 struct reloc_howto_struct alt_howto
;
13398 r_type
= ELF64_R_TYPE (rel
->r_info
);
13399 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13401 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13402 symbol of the previous ADDR64 reloc. The symbol gives us the
13403 proper TOC base to use. */
13404 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13406 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13408 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13414 unresolved_reloc
= FALSE
;
13417 if (r_symndx
< symtab_hdr
->sh_info
)
13419 /* It's a local symbol. */
13420 struct _opd_sec_data
*opd
;
13422 sym
= local_syms
+ r_symndx
;
13423 sec
= local_sections
[r_symndx
];
13424 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13425 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13426 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13427 opd
= get_opd_info (sec
);
13428 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13430 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13436 /* If this is a relocation against the opd section sym
13437 and we have edited .opd, adjust the reloc addend so
13438 that ld -r and ld --emit-relocs output is correct.
13439 If it is a reloc against some other .opd symbol,
13440 then the symbol value will be adjusted later. */
13441 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13442 rel
->r_addend
+= adjust
;
13444 relocation
+= adjust
;
13450 bfd_boolean ignored
;
13452 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13453 r_symndx
, symtab_hdr
, sym_hashes
,
13454 h_elf
, sec
, relocation
,
13455 unresolved_reloc
, warned
, ignored
);
13456 sym_name
= h_elf
->root
.root
.string
;
13457 sym_type
= h_elf
->type
;
13459 && sec
->owner
== output_bfd
13460 && strcmp (sec
->name
, ".opd") == 0)
13462 /* This is a symbol defined in a linker script. All
13463 such are defined in output sections, even those
13464 defined by simple assignment from a symbol defined in
13465 an input section. Transfer the symbol to an
13466 appropriate input .opd section, so that a branch to
13467 this symbol will be mapped to the location specified
13468 by the opd entry. */
13469 struct bfd_link_order
*lo
;
13470 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13471 if (lo
->type
== bfd_indirect_link_order
)
13473 asection
*isec
= lo
->u
.indirect
.section
;
13474 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13475 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13478 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13479 h_elf
->root
.u
.def
.section
= isec
;
13486 h
= (struct ppc_link_hash_entry
*) h_elf
;
13488 if (sec
!= NULL
&& discarded_section (sec
))
13490 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13491 input_bfd
, input_section
,
13492 contents
+ rel
->r_offset
);
13493 wrel
->r_offset
= rel
->r_offset
;
13495 wrel
->r_addend
= 0;
13497 /* For ld -r, remove relocations in debug sections against
13498 sections defined in discarded sections. Not done for
13499 non-debug to preserve relocs in .eh_frame which the
13500 eh_frame editing code expects to be present. */
13501 if (bfd_link_relocatable (info
)
13502 && (input_section
->flags
& SEC_DEBUGGING
))
13508 if (bfd_link_relocatable (info
))
13511 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13513 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13514 sec
= bfd_abs_section_ptr
;
13515 unresolved_reloc
= FALSE
;
13518 /* TLS optimizations. Replace instruction sequences and relocs
13519 based on information we collected in tls_optimize. We edit
13520 RELOCS so that --emit-relocs will output something sensible
13521 for the final instruction stream. */
13526 tls_mask
= h
->tls_mask
;
13527 else if (local_got_ents
!= NULL
)
13529 struct plt_entry
**local_plt
= (struct plt_entry
**)
13530 (local_got_ents
+ symtab_hdr
->sh_info
);
13531 unsigned char *lgot_masks
= (unsigned char *)
13532 (local_plt
+ symtab_hdr
->sh_info
);
13533 tls_mask
= lgot_masks
[r_symndx
];
13536 && (r_type
== R_PPC64_TLS
13537 || r_type
== R_PPC64_TLSGD
13538 || r_type
== R_PPC64_TLSLD
))
13540 /* Check for toc tls entries. */
13541 unsigned char *toc_tls
;
13543 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13544 &local_syms
, rel
, input_bfd
))
13548 tls_mask
= *toc_tls
;
13551 /* Check that tls relocs are used with tls syms, and non-tls
13552 relocs are used with non-tls syms. */
13553 if (r_symndx
!= STN_UNDEF
13554 && r_type
!= R_PPC64_NONE
13556 || h
->elf
.root
.type
== bfd_link_hash_defined
13557 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13558 && (IS_PPC64_TLS_RELOC (r_type
)
13559 != (sym_type
== STT_TLS
13560 || (sym_type
== STT_SECTION
13561 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13564 && (r_type
== R_PPC64_TLS
13565 || r_type
== R_PPC64_TLSGD
13566 || r_type
== R_PPC64_TLSLD
))
13567 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13570 info
->callbacks
->einfo
13571 (!IS_PPC64_TLS_RELOC (r_type
)
13572 /* xgettext:c-format */
13573 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13574 /* xgettext:c-format */
13575 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13576 input_bfd
, input_section
, rel
->r_offset
,
13577 ppc64_elf_howto_table
[r_type
]->name
,
13581 /* Ensure reloc mapping code below stays sane. */
13582 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13583 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13584 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13585 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13586 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13587 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13588 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13589 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13590 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13591 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13599 case R_PPC64_LO_DS_OPT
:
13600 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13601 if ((insn
& (0x3f << 26)) != 58u << 26)
13603 insn
+= (14u << 26) - (58u << 26);
13604 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13605 r_type
= R_PPC64_TOC16_LO
;
13606 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13609 case R_PPC64_TOC16
:
13610 case R_PPC64_TOC16_LO
:
13611 case R_PPC64_TOC16_DS
:
13612 case R_PPC64_TOC16_LO_DS
:
13614 /* Check for toc tls entries. */
13615 unsigned char *toc_tls
;
13618 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13619 &local_syms
, rel
, input_bfd
);
13625 tls_mask
= *toc_tls
;
13626 if (r_type
== R_PPC64_TOC16_DS
13627 || r_type
== R_PPC64_TOC16_LO_DS
)
13630 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13635 /* If we found a GD reloc pair, then we might be
13636 doing a GD->IE transition. */
13639 tls_gd
= TLS_TPRELGD
;
13640 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13643 else if (retval
== 3)
13645 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13653 case R_PPC64_GOT_TPREL16_HI
:
13654 case R_PPC64_GOT_TPREL16_HA
:
13656 && (tls_mask
& TLS_TPREL
) == 0)
13658 rel
->r_offset
-= d_offset
;
13659 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13660 r_type
= R_PPC64_NONE
;
13661 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13665 case R_PPC64_GOT_TPREL16_DS
:
13666 case R_PPC64_GOT_TPREL16_LO_DS
:
13668 && (tls_mask
& TLS_TPREL
) == 0)
13671 insn
= bfd_get_32 (input_bfd
,
13672 contents
+ rel
->r_offset
- d_offset
);
13674 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13675 bfd_put_32 (input_bfd
, insn
,
13676 contents
+ rel
->r_offset
- d_offset
);
13677 r_type
= R_PPC64_TPREL16_HA
;
13678 if (toc_symndx
!= 0)
13680 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13681 rel
->r_addend
= toc_addend
;
13682 /* We changed the symbol. Start over in order to
13683 get h, sym, sec etc. right. */
13687 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13693 && (tls_mask
& TLS_TPREL
) == 0)
13695 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13696 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13699 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13700 /* Was PPC64_TLS which sits on insn boundary, now
13701 PPC64_TPREL16_LO which is at low-order half-word. */
13702 rel
->r_offset
+= d_offset
;
13703 r_type
= R_PPC64_TPREL16_LO
;
13704 if (toc_symndx
!= 0)
13706 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13707 rel
->r_addend
= toc_addend
;
13708 /* We changed the symbol. Start over in order to
13709 get h, sym, sec etc. right. */
13713 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13717 case R_PPC64_GOT_TLSGD16_HI
:
13718 case R_PPC64_GOT_TLSGD16_HA
:
13719 tls_gd
= TLS_TPRELGD
;
13720 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13724 case R_PPC64_GOT_TLSLD16_HI
:
13725 case R_PPC64_GOT_TLSLD16_HA
:
13726 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13729 if ((tls_mask
& tls_gd
) != 0)
13730 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13731 + R_PPC64_GOT_TPREL16_DS
);
13734 rel
->r_offset
-= d_offset
;
13735 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13736 r_type
= R_PPC64_NONE
;
13738 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13742 case R_PPC64_GOT_TLSGD16
:
13743 case R_PPC64_GOT_TLSGD16_LO
:
13744 tls_gd
= TLS_TPRELGD
;
13745 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13749 case R_PPC64_GOT_TLSLD16
:
13750 case R_PPC64_GOT_TLSLD16_LO
:
13751 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13753 unsigned int insn1
, insn2
, insn3
;
13757 offset
= (bfd_vma
) -1;
13758 /* If not using the newer R_PPC64_TLSGD/LD to mark
13759 __tls_get_addr calls, we must trust that the call
13760 stays with its arg setup insns, ie. that the next
13761 reloc is the __tls_get_addr call associated with
13762 the current reloc. Edit both insns. */
13763 if (input_section
->has_tls_get_addr_call
13764 && rel
+ 1 < relend
13765 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13766 htab
->tls_get_addr
,
13767 htab
->tls_get_addr_fd
))
13768 offset
= rel
[1].r_offset
;
13769 /* We read the low GOT_TLS (or TOC16) insn because we
13770 need to keep the destination reg. It may be
13771 something other than the usual r3, and moved to r3
13772 before the call by intervening code. */
13773 insn1
= bfd_get_32 (input_bfd
,
13774 contents
+ rel
->r_offset
- d_offset
);
13775 if ((tls_mask
& tls_gd
) != 0)
13778 insn1
&= (0x1f << 21) | (0x1f << 16);
13779 insn1
|= 58 << 26; /* ld */
13780 insn2
= 0x7c636a14; /* add 3,3,13 */
13781 if (offset
!= (bfd_vma
) -1)
13782 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13783 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13784 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13785 + R_PPC64_GOT_TPREL16_DS
);
13787 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13788 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13793 insn1
&= 0x1f << 21;
13794 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13795 insn2
= 0x38630000; /* addi 3,3,0 */
13798 /* Was an LD reloc. */
13800 sec
= local_sections
[toc_symndx
];
13802 r_symndx
< symtab_hdr
->sh_info
;
13804 if (local_sections
[r_symndx
] == sec
)
13806 if (r_symndx
>= symtab_hdr
->sh_info
)
13807 r_symndx
= STN_UNDEF
;
13808 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13809 if (r_symndx
!= STN_UNDEF
)
13810 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13811 + sec
->output_offset
13812 + sec
->output_section
->vma
);
13814 else if (toc_symndx
!= 0)
13816 r_symndx
= toc_symndx
;
13817 rel
->r_addend
= toc_addend
;
13819 r_type
= R_PPC64_TPREL16_HA
;
13820 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13821 if (offset
!= (bfd_vma
) -1)
13823 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13824 R_PPC64_TPREL16_LO
);
13825 rel
[1].r_offset
= offset
+ d_offset
;
13826 rel
[1].r_addend
= rel
->r_addend
;
13829 bfd_put_32 (input_bfd
, insn1
,
13830 contents
+ rel
->r_offset
- d_offset
);
13831 if (offset
!= (bfd_vma
) -1)
13833 insn3
= bfd_get_32 (input_bfd
,
13834 contents
+ offset
+ 4);
13836 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13838 rel
[1].r_offset
+= 4;
13839 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13842 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13844 if ((tls_mask
& tls_gd
) == 0
13845 && (tls_gd
== 0 || toc_symndx
!= 0))
13847 /* We changed the symbol. Start over in order
13848 to get h, sym, sec etc. right. */
13854 case R_PPC64_TLSGD
:
13855 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13857 unsigned int insn2
, insn3
;
13858 bfd_vma offset
= rel
->r_offset
;
13860 if ((tls_mask
& TLS_TPRELGD
) != 0)
13863 r_type
= R_PPC64_NONE
;
13864 insn2
= 0x7c636a14; /* add 3,3,13 */
13869 if (toc_symndx
!= 0)
13871 r_symndx
= toc_symndx
;
13872 rel
->r_addend
= toc_addend
;
13874 r_type
= R_PPC64_TPREL16_LO
;
13875 rel
->r_offset
= offset
+ d_offset
;
13876 insn2
= 0x38630000; /* addi 3,3,0 */
13878 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13879 /* Zap the reloc on the _tls_get_addr call too. */
13880 BFD_ASSERT (offset
== rel
[1].r_offset
);
13881 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13882 insn3
= bfd_get_32 (input_bfd
,
13883 contents
+ offset
+ 4);
13885 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13887 rel
->r_offset
+= 4;
13888 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13891 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13892 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13897 case R_PPC64_TLSLD
:
13898 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13900 unsigned int insn2
, insn3
;
13901 bfd_vma offset
= rel
->r_offset
;
13904 sec
= local_sections
[toc_symndx
];
13906 r_symndx
< symtab_hdr
->sh_info
;
13908 if (local_sections
[r_symndx
] == sec
)
13910 if (r_symndx
>= symtab_hdr
->sh_info
)
13911 r_symndx
= STN_UNDEF
;
13912 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13913 if (r_symndx
!= STN_UNDEF
)
13914 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13915 + sec
->output_offset
13916 + sec
->output_section
->vma
);
13918 r_type
= R_PPC64_TPREL16_LO
;
13919 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13920 rel
->r_offset
= offset
+ d_offset
;
13921 /* Zap the reloc on the _tls_get_addr call too. */
13922 BFD_ASSERT (offset
== rel
[1].r_offset
);
13923 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13924 insn2
= 0x38630000; /* addi 3,3,0 */
13925 insn3
= bfd_get_32 (input_bfd
,
13926 contents
+ offset
+ 4);
13928 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13930 rel
->r_offset
+= 4;
13931 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13934 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13939 case R_PPC64_DTPMOD64
:
13940 if (rel
+ 1 < relend
13941 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13942 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13944 if ((tls_mask
& TLS_GD
) == 0)
13946 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13947 if ((tls_mask
& TLS_TPRELGD
) != 0)
13948 r_type
= R_PPC64_TPREL64
;
13951 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13952 r_type
= R_PPC64_NONE
;
13954 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13959 if ((tls_mask
& TLS_LD
) == 0)
13961 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13962 r_type
= R_PPC64_NONE
;
13963 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13968 case R_PPC64_TPREL64
:
13969 if ((tls_mask
& TLS_TPREL
) == 0)
13971 r_type
= R_PPC64_NONE
;
13972 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13976 case R_PPC64_ENTRY
:
13977 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13978 if (!bfd_link_pic (info
)
13979 && !info
->traditional_format
13980 && relocation
+ 0x80008000 <= 0xffffffff)
13982 unsigned int insn1
, insn2
;
13984 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13985 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13986 if ((insn1
& ~0xfffc) == LD_R2_0R12
13987 && insn2
== ADD_R2_R2_R12
)
13989 bfd_put_32 (input_bfd
,
13990 LIS_R2
+ PPC_HA (relocation
),
13991 contents
+ rel
->r_offset
);
13992 bfd_put_32 (input_bfd
,
13993 ADDI_R2_R2
+ PPC_LO (relocation
),
13994 contents
+ rel
->r_offset
+ 4);
13999 relocation
-= (rel
->r_offset
14000 + input_section
->output_offset
14001 + input_section
->output_section
->vma
);
14002 if (relocation
+ 0x80008000 <= 0xffffffff)
14004 unsigned int insn1
, insn2
;
14006 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14007 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14008 if ((insn1
& ~0xfffc) == LD_R2_0R12
14009 && insn2
== ADD_R2_R2_R12
)
14011 bfd_put_32 (input_bfd
,
14012 ADDIS_R2_R12
+ PPC_HA (relocation
),
14013 contents
+ rel
->r_offset
);
14014 bfd_put_32 (input_bfd
,
14015 ADDI_R2_R2
+ PPC_LO (relocation
),
14016 contents
+ rel
->r_offset
+ 4);
14022 case R_PPC64_REL16_HA
:
14023 /* If we are generating a non-PIC executable, edit
14024 . 0: addis 2,12,.TOC.-0b@ha
14025 . addi 2,2,.TOC.-0b@l
14026 used by ELFv2 global entry points to set up r2, to
14029 if .TOC. is in range. */
14030 if (!bfd_link_pic (info
)
14031 && !info
->traditional_format
14033 && rel
->r_addend
== d_offset
14034 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14035 && rel
+ 1 < relend
14036 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14037 && rel
[1].r_offset
== rel
->r_offset
+ 4
14038 && rel
[1].r_addend
== rel
->r_addend
+ 4
14039 && relocation
+ 0x80008000 <= 0xffffffff)
14041 unsigned int insn1
, insn2
;
14042 bfd_vma offset
= rel
->r_offset
- d_offset
;
14043 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14044 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14045 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14046 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14048 r_type
= R_PPC64_ADDR16_HA
;
14049 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14050 rel
->r_addend
-= d_offset
;
14051 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14052 rel
[1].r_addend
-= d_offset
+ 4;
14053 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14059 /* Handle other relocations that tweak non-addend part of insn. */
14061 max_br_offset
= 1 << 25;
14062 addend
= rel
->r_addend
;
14063 reloc_dest
= DEST_NORMAL
;
14069 case R_PPC64_TOCSAVE
:
14070 if (relocation
+ addend
== (rel
->r_offset
14071 + input_section
->output_offset
14072 + input_section
->output_section
->vma
)
14073 && tocsave_find (htab
, NO_INSERT
,
14074 &local_syms
, rel
, input_bfd
))
14076 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14078 || insn
== CROR_151515
|| insn
== CROR_313131
)
14079 bfd_put_32 (input_bfd
,
14080 STD_R2_0R1
+ STK_TOC (htab
),
14081 contents
+ rel
->r_offset
);
14085 /* Branch taken prediction relocations. */
14086 case R_PPC64_ADDR14_BRTAKEN
:
14087 case R_PPC64_REL14_BRTAKEN
:
14088 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14089 /* Fall through. */
14091 /* Branch not taken prediction relocations. */
14092 case R_PPC64_ADDR14_BRNTAKEN
:
14093 case R_PPC64_REL14_BRNTAKEN
:
14094 insn
|= bfd_get_32 (input_bfd
,
14095 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14096 /* Fall through. */
14098 case R_PPC64_REL14
:
14099 max_br_offset
= 1 << 15;
14100 /* Fall through. */
14102 case R_PPC64_REL24
:
14103 /* Calls to functions with a different TOC, such as calls to
14104 shared objects, need to alter the TOC pointer. This is
14105 done using a linkage stub. A REL24 branching to these
14106 linkage stubs needs to be followed by a nop, as the nop
14107 will be replaced with an instruction to restore the TOC
14112 && h
->oh
->is_func_descriptor
)
14113 fdh
= ppc_follow_link (h
->oh
);
14114 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14116 if (stub_entry
!= NULL
14117 && (stub_entry
->stub_type
== ppc_stub_plt_call
14118 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14119 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14120 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14122 bfd_boolean can_plt_call
= FALSE
;
14124 /* All of these stubs will modify r2, so there must be a
14125 branch and link followed by a nop. The nop is
14126 replaced by an insn to restore r2. */
14127 if (rel
->r_offset
+ 8 <= input_section
->size
)
14131 br
= bfd_get_32 (input_bfd
,
14132 contents
+ rel
->r_offset
);
14137 nop
= bfd_get_32 (input_bfd
,
14138 contents
+ rel
->r_offset
+ 4);
14140 || nop
== CROR_151515
|| nop
== CROR_313131
)
14143 && (h
== htab
->tls_get_addr_fd
14144 || h
== htab
->tls_get_addr
)
14145 && htab
->params
->tls_get_addr_opt
)
14147 /* Special stub used, leave nop alone. */
14150 bfd_put_32 (input_bfd
,
14151 LD_R2_0R1
+ STK_TOC (htab
),
14152 contents
+ rel
->r_offset
+ 4);
14153 can_plt_call
= TRUE
;
14158 if (!can_plt_call
&& h
!= NULL
)
14160 const char *name
= h
->elf
.root
.root
.string
;
14165 if (strncmp (name
, "__libc_start_main", 17) == 0
14166 && (name
[17] == 0 || name
[17] == '@'))
14168 /* Allow crt1 branch to go via a toc adjusting
14169 stub. Other calls that never return could do
14170 the same, if we could detect such. */
14171 can_plt_call
= TRUE
;
14177 /* g++ as of 20130507 emits self-calls without a
14178 following nop. This is arguably wrong since we
14179 have conflicting information. On the one hand a
14180 global symbol and on the other a local call
14181 sequence, but don't error for this special case.
14182 It isn't possible to cheaply verify we have
14183 exactly such a call. Allow all calls to the same
14185 asection
*code_sec
= sec
;
14187 if (get_opd_info (sec
) != NULL
)
14189 bfd_vma off
= (relocation
+ addend
14190 - sec
->output_section
->vma
14191 - sec
->output_offset
);
14193 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14195 if (code_sec
== input_section
)
14196 can_plt_call
= TRUE
;
14201 if (stub_entry
->stub_type
== ppc_stub_plt_call
14202 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14203 info
->callbacks
->einfo
14204 /* xgettext:c-format */
14205 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14206 "recompile with -fPIC\n"),
14207 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14209 info
->callbacks
->einfo
14210 /* xgettext:c-format */
14211 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14212 "(-mcmodel=small toc adjust stub)\n"),
14213 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14215 bfd_set_error (bfd_error_bad_value
);
14220 && (stub_entry
->stub_type
== ppc_stub_plt_call
14221 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14222 unresolved_reloc
= FALSE
;
14225 if ((stub_entry
== NULL
14226 || stub_entry
->stub_type
== ppc_stub_long_branch
14227 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14228 && get_opd_info (sec
) != NULL
)
14230 /* The branch destination is the value of the opd entry. */
14231 bfd_vma off
= (relocation
+ addend
14232 - sec
->output_section
->vma
14233 - sec
->output_offset
);
14234 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14235 if (dest
!= (bfd_vma
) -1)
14239 reloc_dest
= DEST_OPD
;
14243 /* If the branch is out of reach we ought to have a long
14245 from
= (rel
->r_offset
14246 + input_section
->output_offset
14247 + input_section
->output_section
->vma
);
14249 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14253 if (stub_entry
!= NULL
14254 && (stub_entry
->stub_type
== ppc_stub_long_branch
14255 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14256 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14257 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14258 || (relocation
+ addend
- from
+ max_br_offset
14259 < 2 * max_br_offset
)))
14260 /* Don't use the stub if this branch is in range. */
14263 if (stub_entry
!= NULL
)
14265 /* Munge up the value and addend so that we call the stub
14266 rather than the procedure directly. */
14267 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14269 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14270 relocation
+= (stub_sec
->output_offset
14271 + stub_sec
->output_section
->vma
14272 + stub_sec
->size
- htab
->sfpr
->size
14273 - htab
->sfpr
->output_offset
14274 - htab
->sfpr
->output_section
->vma
);
14276 relocation
= (stub_entry
->stub_offset
14277 + stub_sec
->output_offset
14278 + stub_sec
->output_section
->vma
);
14280 reloc_dest
= DEST_STUB
;
14282 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14283 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14284 && (ALWAYS_EMIT_R2SAVE
14285 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14286 && rel
+ 1 < relend
14287 && rel
[1].r_offset
== rel
->r_offset
+ 4
14288 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14296 /* Set 'a' bit. This is 0b00010 in BO field for branch
14297 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14298 for branch on CTR insns (BO == 1a00t or 1a01t). */
14299 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14300 insn
|= 0x02 << 21;
14301 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14302 insn
|= 0x08 << 21;
14308 /* Invert 'y' bit if not the default. */
14309 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14310 insn
^= 0x01 << 21;
14313 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14316 /* NOP out calls to undefined weak functions.
14317 We can thus call a weak function without first
14318 checking whether the function is defined. */
14320 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14321 && h
->elf
.dynindx
== -1
14322 && r_type
== R_PPC64_REL24
14326 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14332 /* Set `addend'. */
14337 info
->callbacks
->einfo
14338 /* xgettext:c-format */
14339 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14340 input_bfd
, (int) r_type
, sym_name
);
14342 bfd_set_error (bfd_error_bad_value
);
14348 case R_PPC64_TLSGD
:
14349 case R_PPC64_TLSLD
:
14350 case R_PPC64_TOCSAVE
:
14351 case R_PPC64_GNU_VTINHERIT
:
14352 case R_PPC64_GNU_VTENTRY
:
14353 case R_PPC64_ENTRY
:
14356 /* GOT16 relocations. Like an ADDR16 using the symbol's
14357 address in the GOT as relocation value instead of the
14358 symbol's value itself. Also, create a GOT entry for the
14359 symbol and put the symbol value there. */
14360 case R_PPC64_GOT_TLSGD16
:
14361 case R_PPC64_GOT_TLSGD16_LO
:
14362 case R_PPC64_GOT_TLSGD16_HI
:
14363 case R_PPC64_GOT_TLSGD16_HA
:
14364 tls_type
= TLS_TLS
| TLS_GD
;
14367 case R_PPC64_GOT_TLSLD16
:
14368 case R_PPC64_GOT_TLSLD16_LO
:
14369 case R_PPC64_GOT_TLSLD16_HI
:
14370 case R_PPC64_GOT_TLSLD16_HA
:
14371 tls_type
= TLS_TLS
| TLS_LD
;
14374 case R_PPC64_GOT_TPREL16_DS
:
14375 case R_PPC64_GOT_TPREL16_LO_DS
:
14376 case R_PPC64_GOT_TPREL16_HI
:
14377 case R_PPC64_GOT_TPREL16_HA
:
14378 tls_type
= TLS_TLS
| TLS_TPREL
;
14381 case R_PPC64_GOT_DTPREL16_DS
:
14382 case R_PPC64_GOT_DTPREL16_LO_DS
:
14383 case R_PPC64_GOT_DTPREL16_HI
:
14384 case R_PPC64_GOT_DTPREL16_HA
:
14385 tls_type
= TLS_TLS
| TLS_DTPREL
;
14388 case R_PPC64_GOT16
:
14389 case R_PPC64_GOT16_LO
:
14390 case R_PPC64_GOT16_HI
:
14391 case R_PPC64_GOT16_HA
:
14392 case R_PPC64_GOT16_DS
:
14393 case R_PPC64_GOT16_LO_DS
:
14396 /* Relocation is to the entry for this symbol in the global
14401 unsigned long indx
= 0;
14402 struct got_entry
*ent
;
14404 if (tls_type
== (TLS_TLS
| TLS_LD
)
14406 || !h
->elf
.def_dynamic
))
14407 ent
= ppc64_tlsld_got (input_bfd
);
14413 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14414 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
),
14416 || (bfd_link_pic (info
)
14417 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14418 /* This is actually a static link, or it is a
14419 -Bsymbolic link and the symbol is defined
14420 locally, or the symbol was forced to be local
14421 because of a version file. */
14425 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14426 indx
= h
->elf
.dynindx
;
14427 unresolved_reloc
= FALSE
;
14429 ent
= h
->elf
.got
.glist
;
14433 if (local_got_ents
== NULL
)
14435 ent
= local_got_ents
[r_symndx
];
14438 for (; ent
!= NULL
; ent
= ent
->next
)
14439 if (ent
->addend
== orig_rel
.r_addend
14440 && ent
->owner
== input_bfd
14441 && ent
->tls_type
== tls_type
)
14447 if (ent
->is_indirect
)
14448 ent
= ent
->got
.ent
;
14449 offp
= &ent
->got
.offset
;
14450 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14454 /* The offset must always be a multiple of 8. We use the
14455 least significant bit to record whether we have already
14456 processed this entry. */
14458 if ((off
& 1) != 0)
14462 /* Generate relocs for the dynamic linker, except in
14463 the case of TLSLD where we'll use one entry per
14471 ? h
->elf
.type
== STT_GNU_IFUNC
14472 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14474 relgot
= htab
->elf
.irelplt
;
14475 else if ((bfd_link_pic (info
) || indx
!= 0)
14477 || (tls_type
== (TLS_TLS
| TLS_LD
)
14478 && !h
->elf
.def_dynamic
)
14479 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14480 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14481 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14482 if (relgot
!= NULL
)
14484 outrel
.r_offset
= (got
->output_section
->vma
14485 + got
->output_offset
14487 outrel
.r_addend
= addend
;
14488 if (tls_type
& (TLS_LD
| TLS_GD
))
14490 outrel
.r_addend
= 0;
14491 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14492 if (tls_type
== (TLS_TLS
| TLS_GD
))
14494 loc
= relgot
->contents
;
14495 loc
+= (relgot
->reloc_count
++
14496 * sizeof (Elf64_External_Rela
));
14497 bfd_elf64_swap_reloca_out (output_bfd
,
14499 outrel
.r_offset
+= 8;
14500 outrel
.r_addend
= addend
;
14502 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14505 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14506 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14507 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14508 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14509 else if (indx
!= 0)
14510 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14514 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14516 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14518 /* Write the .got section contents for the sake
14520 loc
= got
->contents
+ off
;
14521 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14525 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14527 outrel
.r_addend
+= relocation
;
14528 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14530 if (htab
->elf
.tls_sec
== NULL
)
14531 outrel
.r_addend
= 0;
14533 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14536 loc
= relgot
->contents
;
14537 loc
+= (relgot
->reloc_count
++
14538 * sizeof (Elf64_External_Rela
));
14539 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14542 /* Init the .got section contents here if we're not
14543 emitting a reloc. */
14546 relocation
+= addend
;
14547 if (tls_type
== (TLS_TLS
| TLS_LD
))
14549 else if (tls_type
!= 0)
14551 if (htab
->elf
.tls_sec
== NULL
)
14555 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14556 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14557 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14560 if (tls_type
== (TLS_TLS
| TLS_GD
))
14562 bfd_put_64 (output_bfd
, relocation
,
14563 got
->contents
+ off
+ 8);
14568 bfd_put_64 (output_bfd
, relocation
,
14569 got
->contents
+ off
);
14573 if (off
>= (bfd_vma
) -2)
14576 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14577 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14581 case R_PPC64_PLT16_HA
:
14582 case R_PPC64_PLT16_HI
:
14583 case R_PPC64_PLT16_LO
:
14584 case R_PPC64_PLT32
:
14585 case R_PPC64_PLT64
:
14586 /* Relocation is to the entry for this symbol in the
14587 procedure linkage table. */
14589 struct plt_entry
**plt_list
= NULL
;
14591 plt_list
= &h
->elf
.plt
.plist
;
14592 else if (local_got_ents
!= NULL
)
14594 struct plt_entry
**local_plt
= (struct plt_entry
**)
14595 (local_got_ents
+ symtab_hdr
->sh_info
);
14596 unsigned char *local_got_tls_masks
= (unsigned char *)
14597 (local_plt
+ symtab_hdr
->sh_info
);
14598 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14599 plt_list
= local_plt
+ r_symndx
;
14603 struct plt_entry
*ent
;
14605 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14606 if (ent
->plt
.offset
!= (bfd_vma
) -1
14607 && ent
->addend
== orig_rel
.r_addend
)
14611 plt
= htab
->elf
.splt
;
14612 if (!htab
->elf
.dynamic_sections_created
14614 || h
->elf
.dynindx
== -1)
14615 plt
= htab
->elf
.iplt
;
14616 relocation
= (plt
->output_section
->vma
14617 + plt
->output_offset
14618 + ent
->plt
.offset
);
14620 unresolved_reloc
= FALSE
;
14628 /* Relocation value is TOC base. */
14629 relocation
= TOCstart
;
14630 if (r_symndx
== STN_UNDEF
)
14631 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14632 else if (unresolved_reloc
)
14634 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14635 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14637 unresolved_reloc
= TRUE
;
14640 /* TOC16 relocs. We want the offset relative to the TOC base,
14641 which is the address of the start of the TOC plus 0x8000.
14642 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14644 case R_PPC64_TOC16
:
14645 case R_PPC64_TOC16_LO
:
14646 case R_PPC64_TOC16_HI
:
14647 case R_PPC64_TOC16_DS
:
14648 case R_PPC64_TOC16_LO_DS
:
14649 case R_PPC64_TOC16_HA
:
14650 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14653 /* Relocate against the beginning of the section. */
14654 case R_PPC64_SECTOFF
:
14655 case R_PPC64_SECTOFF_LO
:
14656 case R_PPC64_SECTOFF_HI
:
14657 case R_PPC64_SECTOFF_DS
:
14658 case R_PPC64_SECTOFF_LO_DS
:
14659 case R_PPC64_SECTOFF_HA
:
14661 addend
-= sec
->output_section
->vma
;
14664 case R_PPC64_REL16
:
14665 case R_PPC64_REL16_LO
:
14666 case R_PPC64_REL16_HI
:
14667 case R_PPC64_REL16_HA
:
14668 case R_PPC64_REL16DX_HA
:
14671 case R_PPC64_REL14
:
14672 case R_PPC64_REL14_BRNTAKEN
:
14673 case R_PPC64_REL14_BRTAKEN
:
14674 case R_PPC64_REL24
:
14677 case R_PPC64_TPREL16
:
14678 case R_PPC64_TPREL16_LO
:
14679 case R_PPC64_TPREL16_HI
:
14680 case R_PPC64_TPREL16_HA
:
14681 case R_PPC64_TPREL16_DS
:
14682 case R_PPC64_TPREL16_LO_DS
:
14683 case R_PPC64_TPREL16_HIGH
:
14684 case R_PPC64_TPREL16_HIGHA
:
14685 case R_PPC64_TPREL16_HIGHER
:
14686 case R_PPC64_TPREL16_HIGHERA
:
14687 case R_PPC64_TPREL16_HIGHEST
:
14688 case R_PPC64_TPREL16_HIGHESTA
:
14690 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14691 && h
->elf
.dynindx
== -1)
14693 /* Make this relocation against an undefined weak symbol
14694 resolve to zero. This is really just a tweak, since
14695 code using weak externs ought to check that they are
14696 defined before using them. */
14697 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14699 insn
= bfd_get_32 (input_bfd
, p
);
14700 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14702 bfd_put_32 (input_bfd
, insn
, p
);
14705 if (htab
->elf
.tls_sec
!= NULL
)
14706 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14707 if (bfd_link_pic (info
))
14708 /* The TPREL16 relocs shouldn't really be used in shared
14709 libs as they will result in DT_TEXTREL being set, but
14710 support them anyway. */
14714 case R_PPC64_DTPREL16
:
14715 case R_PPC64_DTPREL16_LO
:
14716 case R_PPC64_DTPREL16_HI
:
14717 case R_PPC64_DTPREL16_HA
:
14718 case R_PPC64_DTPREL16_DS
:
14719 case R_PPC64_DTPREL16_LO_DS
:
14720 case R_PPC64_DTPREL16_HIGH
:
14721 case R_PPC64_DTPREL16_HIGHA
:
14722 case R_PPC64_DTPREL16_HIGHER
:
14723 case R_PPC64_DTPREL16_HIGHERA
:
14724 case R_PPC64_DTPREL16_HIGHEST
:
14725 case R_PPC64_DTPREL16_HIGHESTA
:
14726 if (htab
->elf
.tls_sec
!= NULL
)
14727 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14730 case R_PPC64_ADDR64_LOCAL
:
14731 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14736 case R_PPC64_DTPMOD64
:
14741 case R_PPC64_TPREL64
:
14742 if (htab
->elf
.tls_sec
!= NULL
)
14743 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14746 case R_PPC64_DTPREL64
:
14747 if (htab
->elf
.tls_sec
!= NULL
)
14748 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14749 /* Fall through. */
14751 /* Relocations that may need to be propagated if this is a
14753 case R_PPC64_REL30
:
14754 case R_PPC64_REL32
:
14755 case R_PPC64_REL64
:
14756 case R_PPC64_ADDR14
:
14757 case R_PPC64_ADDR14_BRNTAKEN
:
14758 case R_PPC64_ADDR14_BRTAKEN
:
14759 case R_PPC64_ADDR16
:
14760 case R_PPC64_ADDR16_DS
:
14761 case R_PPC64_ADDR16_HA
:
14762 case R_PPC64_ADDR16_HI
:
14763 case R_PPC64_ADDR16_HIGH
:
14764 case R_PPC64_ADDR16_HIGHA
:
14765 case R_PPC64_ADDR16_HIGHER
:
14766 case R_PPC64_ADDR16_HIGHERA
:
14767 case R_PPC64_ADDR16_HIGHEST
:
14768 case R_PPC64_ADDR16_HIGHESTA
:
14769 case R_PPC64_ADDR16_LO
:
14770 case R_PPC64_ADDR16_LO_DS
:
14771 case R_PPC64_ADDR24
:
14772 case R_PPC64_ADDR32
:
14773 case R_PPC64_ADDR64
:
14774 case R_PPC64_UADDR16
:
14775 case R_PPC64_UADDR32
:
14776 case R_PPC64_UADDR64
:
14778 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14781 if (NO_OPD_RELOCS
&& is_opd
)
14784 if (bfd_link_pic (info
)
14785 ? ((h
!= NULL
&& pc_dynrelocs (h
))
14786 || must_be_dyn_reloc (info
, r_type
))
14788 ? h
->dyn_relocs
!= NULL
14789 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14791 bfd_boolean skip
, relocate
;
14795 /* When generating a dynamic object, these relocations
14796 are copied into the output file to be resolved at run
14802 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14803 input_section
, rel
->r_offset
);
14804 if (out_off
== (bfd_vma
) -1)
14806 else if (out_off
== (bfd_vma
) -2)
14807 skip
= TRUE
, relocate
= TRUE
;
14808 out_off
+= (input_section
->output_section
->vma
14809 + input_section
->output_offset
);
14810 outrel
.r_offset
= out_off
;
14811 outrel
.r_addend
= rel
->r_addend
;
14813 /* Optimize unaligned reloc use. */
14814 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14815 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14816 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14817 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14818 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14819 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14820 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14821 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14822 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14825 memset (&outrel
, 0, sizeof outrel
);
14826 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14828 && r_type
!= R_PPC64_TOC
)
14830 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14831 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14835 /* This symbol is local, or marked to become local,
14836 or this is an opd section reloc which must point
14837 at a local function. */
14838 outrel
.r_addend
+= relocation
;
14839 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14841 if (is_opd
&& h
!= NULL
)
14843 /* Lie about opd entries. This case occurs
14844 when building shared libraries and we
14845 reference a function in another shared
14846 lib. The same thing happens for a weak
14847 definition in an application that's
14848 overridden by a strong definition in a
14849 shared lib. (I believe this is a generic
14850 bug in binutils handling of weak syms.)
14851 In these cases we won't use the opd
14852 entry in this lib. */
14853 unresolved_reloc
= FALSE
;
14856 && r_type
== R_PPC64_ADDR64
14858 ? h
->elf
.type
== STT_GNU_IFUNC
14859 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14860 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14863 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14865 /* We need to relocate .opd contents for ld.so.
14866 Prelink also wants simple and consistent rules
14867 for relocs. This make all RELATIVE relocs have
14868 *r_offset equal to r_addend. */
14877 ? h
->elf
.type
== STT_GNU_IFUNC
14878 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14880 info
->callbacks
->einfo
14881 /* xgettext:c-format */
14882 (_("%P: %H: %s for indirect "
14883 "function `%T' unsupported\n"),
14884 input_bfd
, input_section
, rel
->r_offset
,
14885 ppc64_elf_howto_table
[r_type
]->name
,
14889 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14891 else if (sec
== NULL
|| sec
->owner
== NULL
)
14893 bfd_set_error (bfd_error_bad_value
);
14900 osec
= sec
->output_section
;
14901 indx
= elf_section_data (osec
)->dynindx
;
14905 if ((osec
->flags
& SEC_READONLY
) == 0
14906 && htab
->elf
.data_index_section
!= NULL
)
14907 osec
= htab
->elf
.data_index_section
;
14909 osec
= htab
->elf
.text_index_section
;
14910 indx
= elf_section_data (osec
)->dynindx
;
14912 BFD_ASSERT (indx
!= 0);
14914 /* We are turning this relocation into one
14915 against a section symbol, so subtract out
14916 the output section's address but not the
14917 offset of the input section in the output
14919 outrel
.r_addend
-= osec
->vma
;
14922 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14926 sreloc
= elf_section_data (input_section
)->sreloc
;
14928 ? h
->elf
.type
== STT_GNU_IFUNC
14929 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14930 sreloc
= htab
->elf
.irelplt
;
14931 if (sreloc
== NULL
)
14934 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14937 loc
= sreloc
->contents
;
14938 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14939 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14941 /* If this reloc is against an external symbol, it will
14942 be computed at runtime, so there's no need to do
14943 anything now. However, for the sake of prelink ensure
14944 that the section contents are a known value. */
14947 unresolved_reloc
= FALSE
;
14948 /* The value chosen here is quite arbitrary as ld.so
14949 ignores section contents except for the special
14950 case of .opd where the contents might be accessed
14951 before relocation. Choose zero, as that won't
14952 cause reloc overflow. */
14955 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14956 to improve backward compatibility with older
14958 if (r_type
== R_PPC64_ADDR64
)
14959 addend
= outrel
.r_addend
;
14960 /* Adjust pc_relative relocs to have zero in *r_offset. */
14961 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14962 addend
= (input_section
->output_section
->vma
14963 + input_section
->output_offset
14970 case R_PPC64_GLOB_DAT
:
14971 case R_PPC64_JMP_SLOT
:
14972 case R_PPC64_JMP_IREL
:
14973 case R_PPC64_RELATIVE
:
14974 /* We shouldn't ever see these dynamic relocs in relocatable
14976 /* Fall through. */
14978 case R_PPC64_PLTGOT16
:
14979 case R_PPC64_PLTGOT16_DS
:
14980 case R_PPC64_PLTGOT16_HA
:
14981 case R_PPC64_PLTGOT16_HI
:
14982 case R_PPC64_PLTGOT16_LO
:
14983 case R_PPC64_PLTGOT16_LO_DS
:
14984 case R_PPC64_PLTREL32
:
14985 case R_PPC64_PLTREL64
:
14986 /* These ones haven't been implemented yet. */
14988 info
->callbacks
->einfo
14989 /* xgettext:c-format */
14990 (_("%P: %B: %s is not supported for `%T'\n"),
14992 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14994 bfd_set_error (bfd_error_invalid_operation
);
14999 /* Multi-instruction sequences that access the TOC can be
15000 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15001 to nop; addi rb,r2,x; */
15007 case R_PPC64_GOT_TLSLD16_HI
:
15008 case R_PPC64_GOT_TLSGD16_HI
:
15009 case R_PPC64_GOT_TPREL16_HI
:
15010 case R_PPC64_GOT_DTPREL16_HI
:
15011 case R_PPC64_GOT16_HI
:
15012 case R_PPC64_TOC16_HI
:
15013 /* These relocs would only be useful if building up an
15014 offset to later add to r2, perhaps in an indexed
15015 addressing mode instruction. Don't try to optimize.
15016 Unfortunately, the possibility of someone building up an
15017 offset like this or even with the HA relocs, means that
15018 we need to check the high insn when optimizing the low
15022 case R_PPC64_GOT_TLSLD16_HA
:
15023 case R_PPC64_GOT_TLSGD16_HA
:
15024 case R_PPC64_GOT_TPREL16_HA
:
15025 case R_PPC64_GOT_DTPREL16_HA
:
15026 case R_PPC64_GOT16_HA
:
15027 case R_PPC64_TOC16_HA
:
15028 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15029 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15031 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15032 bfd_put_32 (input_bfd
, NOP
, p
);
15036 case R_PPC64_GOT_TLSLD16_LO
:
15037 case R_PPC64_GOT_TLSGD16_LO
:
15038 case R_PPC64_GOT_TPREL16_LO_DS
:
15039 case R_PPC64_GOT_DTPREL16_LO_DS
:
15040 case R_PPC64_GOT16_LO
:
15041 case R_PPC64_GOT16_LO_DS
:
15042 case R_PPC64_TOC16_LO
:
15043 case R_PPC64_TOC16_LO_DS
:
15044 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15045 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15047 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15048 insn
= bfd_get_32 (input_bfd
, p
);
15049 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15051 /* Transform addic to addi when we change reg. */
15052 insn
&= ~((0x3f << 26) | (0x1f << 16));
15053 insn
|= (14u << 26) | (2 << 16);
15057 insn
&= ~(0x1f << 16);
15060 bfd_put_32 (input_bfd
, insn
, p
);
15065 /* Do any further special processing. */
15066 howto
= ppc64_elf_howto_table
[(int) r_type
];
15072 case R_PPC64_REL16_HA
:
15073 case R_PPC64_REL16DX_HA
:
15074 case R_PPC64_ADDR16_HA
:
15075 case R_PPC64_ADDR16_HIGHA
:
15076 case R_PPC64_ADDR16_HIGHERA
:
15077 case R_PPC64_ADDR16_HIGHESTA
:
15078 case R_PPC64_TOC16_HA
:
15079 case R_PPC64_SECTOFF_HA
:
15080 case R_PPC64_TPREL16_HA
:
15081 case R_PPC64_TPREL16_HIGHA
:
15082 case R_PPC64_TPREL16_HIGHERA
:
15083 case R_PPC64_TPREL16_HIGHESTA
:
15084 case R_PPC64_DTPREL16_HA
:
15085 case R_PPC64_DTPREL16_HIGHA
:
15086 case R_PPC64_DTPREL16_HIGHERA
:
15087 case R_PPC64_DTPREL16_HIGHESTA
:
15088 /* It's just possible that this symbol is a weak symbol
15089 that's not actually defined anywhere. In that case,
15090 'sec' would be NULL, and we should leave the symbol
15091 alone (it will be set to zero elsewhere in the link). */
15094 /* Fall through. */
15096 case R_PPC64_GOT16_HA
:
15097 case R_PPC64_PLTGOT16_HA
:
15098 case R_PPC64_PLT16_HA
:
15099 case R_PPC64_GOT_TLSGD16_HA
:
15100 case R_PPC64_GOT_TLSLD16_HA
:
15101 case R_PPC64_GOT_TPREL16_HA
:
15102 case R_PPC64_GOT_DTPREL16_HA
:
15103 /* Add 0x10000 if sign bit in 0:15 is set.
15104 Bits 0:15 are not used. */
15108 case R_PPC64_ADDR16_DS
:
15109 case R_PPC64_ADDR16_LO_DS
:
15110 case R_PPC64_GOT16_DS
:
15111 case R_PPC64_GOT16_LO_DS
:
15112 case R_PPC64_PLT16_LO_DS
:
15113 case R_PPC64_SECTOFF_DS
:
15114 case R_PPC64_SECTOFF_LO_DS
:
15115 case R_PPC64_TOC16_DS
:
15116 case R_PPC64_TOC16_LO_DS
:
15117 case R_PPC64_PLTGOT16_DS
:
15118 case R_PPC64_PLTGOT16_LO_DS
:
15119 case R_PPC64_GOT_TPREL16_DS
:
15120 case R_PPC64_GOT_TPREL16_LO_DS
:
15121 case R_PPC64_GOT_DTPREL16_DS
:
15122 case R_PPC64_GOT_DTPREL16_LO_DS
:
15123 case R_PPC64_TPREL16_DS
:
15124 case R_PPC64_TPREL16_LO_DS
:
15125 case R_PPC64_DTPREL16_DS
:
15126 case R_PPC64_DTPREL16_LO_DS
:
15127 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15129 /* If this reloc is against an lq, lxv, or stxv insn, then
15130 the value must be a multiple of 16. This is somewhat of
15131 a hack, but the "correct" way to do this by defining _DQ
15132 forms of all the _DS relocs bloats all reloc switches in
15133 this file. It doesn't make much sense to use these
15134 relocs in data, so testing the insn should be safe. */
15135 if ((insn
& (0x3f << 26)) == (56u << 26)
15136 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15138 relocation
+= addend
;
15139 addend
= insn
& (mask
^ 3);
15140 if ((relocation
& mask
) != 0)
15142 relocation
^= relocation
& mask
;
15143 info
->callbacks
->einfo
15144 /* xgettext:c-format */
15145 (_("%P: %H: error: %s not a multiple of %u\n"),
15146 input_bfd
, input_section
, rel
->r_offset
,
15149 bfd_set_error (bfd_error_bad_value
);
15156 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15157 because such sections are not SEC_ALLOC and thus ld.so will
15158 not process them. */
15159 if (unresolved_reloc
15160 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15161 && h
->elf
.def_dynamic
)
15162 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15163 rel
->r_offset
) != (bfd_vma
) -1)
15165 info
->callbacks
->einfo
15166 /* xgettext:c-format */
15167 (_("%P: %H: unresolvable %s against `%T'\n"),
15168 input_bfd
, input_section
, rel
->r_offset
,
15170 h
->elf
.root
.root
.string
);
15174 /* 16-bit fields in insns mostly have signed values, but a
15175 few insns have 16-bit unsigned values. Really, we should
15176 have different reloc types. */
15177 if (howto
->complain_on_overflow
!= complain_overflow_dont
15178 && howto
->dst_mask
== 0xffff
15179 && (input_section
->flags
& SEC_CODE
) != 0)
15181 enum complain_overflow complain
= complain_overflow_signed
;
15183 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15184 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15185 complain
= complain_overflow_bitfield
;
15186 else if (howto
->rightshift
== 0
15187 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15188 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15189 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15190 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15191 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15192 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15193 complain
= complain_overflow_unsigned
;
15194 if (howto
->complain_on_overflow
!= complain
)
15196 alt_howto
= *howto
;
15197 alt_howto
.complain_on_overflow
= complain
;
15198 howto
= &alt_howto
;
15202 if (r_type
== R_PPC64_REL16DX_HA
)
15204 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15205 if (rel
->r_offset
+ 4 > input_section
->size
)
15206 r
= bfd_reloc_outofrange
;
15209 relocation
+= addend
;
15210 relocation
-= (rel
->r_offset
15211 + input_section
->output_offset
15212 + input_section
->output_section
->vma
);
15213 relocation
= (bfd_signed_vma
) relocation
>> 16;
15214 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15216 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15217 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15219 if (relocation
+ 0x8000 > 0xffff)
15220 r
= bfd_reloc_overflow
;
15224 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15225 rel
->r_offset
, relocation
, addend
);
15227 if (r
!= bfd_reloc_ok
)
15229 char *more_info
= NULL
;
15230 const char *reloc_name
= howto
->name
;
15232 if (reloc_dest
!= DEST_NORMAL
)
15234 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15235 if (more_info
!= NULL
)
15237 strcpy (more_info
, reloc_name
);
15238 strcat (more_info
, (reloc_dest
== DEST_OPD
15239 ? " (OPD)" : " (stub)"));
15240 reloc_name
= more_info
;
15244 if (r
== bfd_reloc_overflow
)
15246 /* On code like "if (foo) foo();" don't report overflow
15247 on a branch to zero when foo is undefined. */
15249 && (reloc_dest
== DEST_STUB
15251 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15252 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15253 && is_branch_reloc (r_type
))))
15254 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15255 sym_name
, reloc_name
,
15257 input_bfd
, input_section
,
15262 info
->callbacks
->einfo
15263 /* xgettext:c-format */
15264 (_("%P: %H: %s against `%T': error %d\n"),
15265 input_bfd
, input_section
, rel
->r_offset
,
15266 reloc_name
, sym_name
, (int) r
);
15269 if (more_info
!= NULL
)
15279 Elf_Internal_Shdr
*rel_hdr
;
15280 size_t deleted
= rel
- wrel
;
15282 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15283 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15284 if (rel_hdr
->sh_size
== 0)
15286 /* It is too late to remove an empty reloc section. Leave
15288 ??? What is wrong with an empty section??? */
15289 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15292 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15293 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15294 input_section
->reloc_count
-= deleted
;
15297 /* If we're emitting relocations, then shortly after this function
15298 returns, reloc offsets and addends for this section will be
15299 adjusted. Worse, reloc symbol indices will be for the output
15300 file rather than the input. Save a copy of the relocs for
15301 opd_entry_value. */
15302 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15305 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15306 rel
= bfd_alloc (input_bfd
, amt
);
15307 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15308 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15311 memcpy (rel
, relocs
, amt
);
15316 /* Adjust the value of any local symbols in opd sections. */
15319 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15320 const char *name ATTRIBUTE_UNUSED
,
15321 Elf_Internal_Sym
*elfsym
,
15322 asection
*input_sec
,
15323 struct elf_link_hash_entry
*h
)
15325 struct _opd_sec_data
*opd
;
15332 opd
= get_opd_info (input_sec
);
15333 if (opd
== NULL
|| opd
->adjust
== NULL
)
15336 value
= elfsym
->st_value
- input_sec
->output_offset
;
15337 if (!bfd_link_relocatable (info
))
15338 value
-= input_sec
->output_section
->vma
;
15340 adjust
= opd
->adjust
[OPD_NDX (value
)];
15344 elfsym
->st_value
+= adjust
;
15348 /* Finish up dynamic symbol handling. We set the contents of various
15349 dynamic sections here. */
15352 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15353 struct bfd_link_info
*info
,
15354 struct elf_link_hash_entry
*h
,
15355 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
15357 struct ppc_link_hash_table
*htab
;
15358 struct plt_entry
*ent
;
15359 Elf_Internal_Rela rela
;
15362 htab
= ppc_hash_table (info
);
15366 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15367 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15369 /* This symbol has an entry in the procedure linkage
15370 table. Set it up. */
15371 if (!htab
->elf
.dynamic_sections_created
15372 || h
->dynindx
== -1)
15374 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15376 && (h
->root
.type
== bfd_link_hash_defined
15377 || h
->root
.type
== bfd_link_hash_defweak
));
15378 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15379 + htab
->elf
.iplt
->output_offset
15380 + ent
->plt
.offset
);
15382 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15384 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15385 rela
.r_addend
= (h
->root
.u
.def
.value
15386 + h
->root
.u
.def
.section
->output_offset
15387 + h
->root
.u
.def
.section
->output_section
->vma
15389 loc
= (htab
->elf
.irelplt
->contents
15390 + (htab
->elf
.irelplt
->reloc_count
++
15391 * sizeof (Elf64_External_Rela
)));
15395 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15396 + htab
->elf
.splt
->output_offset
15397 + ent
->plt
.offset
);
15398 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15399 rela
.r_addend
= ent
->addend
;
15400 loc
= (htab
->elf
.srelplt
->contents
15401 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15402 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15404 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15406 if (!htab
->opd_abi
)
15408 if (!h
->def_regular
)
15410 /* Mark the symbol as undefined, rather than as
15411 defined in glink. Leave the value if there were
15412 any relocations where pointer equality matters
15413 (this is a clue for the dynamic linker, to make
15414 function pointer comparisons work between an
15415 application and shared library), otherwise set it
15417 sym
->st_shndx
= SHN_UNDEF
;
15418 if (!h
->pointer_equality_needed
)
15420 else if (!h
->ref_regular_nonweak
)
15422 /* This breaks function pointer comparisons, but
15423 that is better than breaking tests for a NULL
15424 function pointer. */
15433 /* This symbol needs a copy reloc. Set it up. */
15436 if (h
->dynindx
== -1
15437 || (h
->root
.type
!= bfd_link_hash_defined
15438 && h
->root
.type
!= bfd_link_hash_defweak
)
15439 || htab
->elf
.srelbss
== NULL
15440 || htab
->elf
.sreldynrelro
== NULL
)
15443 rela
.r_offset
= (h
->root
.u
.def
.value
15444 + h
->root
.u
.def
.section
->output_section
->vma
15445 + h
->root
.u
.def
.section
->output_offset
);
15446 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15448 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
15449 srel
= htab
->elf
.sreldynrelro
;
15451 srel
= htab
->elf
.srelbss
;
15452 loc
= srel
->contents
;
15453 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15454 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15460 /* Used to decide how to sort relocs in an optimal manner for the
15461 dynamic linker, before writing them out. */
15463 static enum elf_reloc_type_class
15464 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15465 const asection
*rel_sec
,
15466 const Elf_Internal_Rela
*rela
)
15468 enum elf_ppc64_reloc_type r_type
;
15469 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15471 if (rel_sec
== htab
->elf
.irelplt
)
15472 return reloc_class_ifunc
;
15474 r_type
= ELF64_R_TYPE (rela
->r_info
);
15477 case R_PPC64_RELATIVE
:
15478 return reloc_class_relative
;
15479 case R_PPC64_JMP_SLOT
:
15480 return reloc_class_plt
;
15482 return reloc_class_copy
;
15484 return reloc_class_normal
;
15488 /* Finish up the dynamic sections. */
15491 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15492 struct bfd_link_info
*info
)
15494 struct ppc_link_hash_table
*htab
;
15498 htab
= ppc_hash_table (info
);
15502 dynobj
= htab
->elf
.dynobj
;
15503 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15505 if (htab
->elf
.dynamic_sections_created
)
15507 Elf64_External_Dyn
*dyncon
, *dynconend
;
15509 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15512 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15513 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15514 for (; dyncon
< dynconend
; dyncon
++)
15516 Elf_Internal_Dyn dyn
;
15519 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15526 case DT_PPC64_GLINK
:
15528 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15529 /* We stupidly defined DT_PPC64_GLINK to be the start
15530 of glink rather than the first entry point, which is
15531 what ld.so needs, and now have a bigger stub to
15532 support automatic multiple TOCs. */
15533 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15537 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15540 dyn
.d_un
.d_ptr
= s
->vma
;
15544 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15545 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15548 case DT_PPC64_OPDSZ
:
15549 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15552 dyn
.d_un
.d_val
= s
->size
;
15556 s
= htab
->elf
.splt
;
15557 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15561 s
= htab
->elf
.srelplt
;
15562 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15566 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15570 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15574 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15576 /* Fill in the first entry in the global offset table.
15577 We use it to hold the link-time TOCbase. */
15578 bfd_put_64 (output_bfd
,
15579 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15580 htab
->elf
.sgot
->contents
);
15582 /* Set .got entry size. */
15583 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15586 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15588 /* Set .plt entry size. */
15589 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15590 = PLT_ENTRY_SIZE (htab
);
15593 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15594 brlt ourselves if emitrelocations. */
15595 if (htab
->brlt
!= NULL
15596 && htab
->brlt
->reloc_count
!= 0
15597 && !_bfd_elf_link_output_relocs (output_bfd
,
15599 elf_section_data (htab
->brlt
)->rela
.hdr
,
15600 elf_section_data (htab
->brlt
)->relocs
,
15604 if (htab
->glink
!= NULL
15605 && htab
->glink
->reloc_count
!= 0
15606 && !_bfd_elf_link_output_relocs (output_bfd
,
15608 elf_section_data (htab
->glink
)->rela
.hdr
,
15609 elf_section_data (htab
->glink
)->relocs
,
15613 if (htab
->glink_eh_frame
!= NULL
15614 && htab
->glink_eh_frame
->size
!= 0)
15618 asection
*stub_sec
;
15620 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15621 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15623 stub_sec
= stub_sec
->next
)
15624 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15630 /* Offset to stub section. */
15631 val
= (stub_sec
->output_section
->vma
15632 + stub_sec
->output_offset
);
15633 val
-= (htab
->glink_eh_frame
->output_section
->vma
15634 + htab
->glink_eh_frame
->output_offset
15635 + (p
- htab
->glink_eh_frame
->contents
));
15636 if (val
+ 0x80000000 > 0xffffffff)
15638 info
->callbacks
->einfo
15639 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15643 bfd_put_32 (dynobj
, val
, p
);
15645 /* stub section size. */
15647 /* Augmentation. */
15652 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15658 /* Offset to .glink. */
15659 val
= (htab
->glink
->output_section
->vma
15660 + htab
->glink
->output_offset
15662 val
-= (htab
->glink_eh_frame
->output_section
->vma
15663 + htab
->glink_eh_frame
->output_offset
15664 + (p
- htab
->glink_eh_frame
->contents
));
15665 if (val
+ 0x80000000 > 0xffffffff)
15667 info
->callbacks
->einfo
15668 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15669 htab
->glink
->name
);
15672 bfd_put_32 (dynobj
, val
, p
);
15676 /* Augmentation. */
15682 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15683 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15684 htab
->glink_eh_frame
,
15685 htab
->glink_eh_frame
->contents
))
15689 /* We need to handle writing out multiple GOT sections ourselves,
15690 since we didn't add them to DYNOBJ. We know dynobj is the first
15692 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15696 if (!is_ppc64_elf (dynobj
))
15699 s
= ppc64_elf_tdata (dynobj
)->got
;
15702 && s
->output_section
!= bfd_abs_section_ptr
15703 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15704 s
->contents
, s
->output_offset
,
15707 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15710 && s
->output_section
!= bfd_abs_section_ptr
15711 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15712 s
->contents
, s
->output_offset
,
15720 #include "elf64-target.h"
15722 /* FreeBSD support */
15724 #undef TARGET_LITTLE_SYM
15725 #undef TARGET_LITTLE_NAME
15727 #undef TARGET_BIG_SYM
15728 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15729 #undef TARGET_BIG_NAME
15730 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15733 #define ELF_OSABI ELFOSABI_FREEBSD
15736 #define elf64_bed elf64_powerpc_fbsd_bed
15738 #include "elf64-target.h"