1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 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 called to transfer flags for a weakdef during processing
4717 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4718 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4719 if (!(ELIMINATE_COPY_RELOCS
4720 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4721 && edir
->elf
.dynamic_adjusted
))
4722 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4724 if (edir
->elf
.versioned
!= versioned_hidden
)
4725 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4726 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4727 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4728 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4729 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4731 /* If we were called to copy over info for a weak sym, don't copy
4732 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4733 in order to simplify readonly_dynrelocs and save a field in the
4734 symbol hash entry, but that means dyn_relocs can't be used in any
4735 tests about a specific symbol, or affect other symbol flags which
4737 Chain weakdefs so we can get from the weakdef back to an alias.
4738 The list is circular so that we don't need to use u.weakdef as
4739 well as this list to look at all aliases. */
4740 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4742 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4747 cur
= edir
->weakref
;
4752 /* We can be called twice for the same symbols.
4753 Don't make multiple loops. */
4757 } while (cur
!= edir
);
4759 next
= add
->weakref
;
4762 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4763 edir
->weakref
= add
;
4766 } while (add
!= NULL
&& add
!= eind
);
4770 /* Copy over any dynamic relocs we may have on the indirect sym. */
4771 if (eind
->dyn_relocs
!= NULL
)
4773 if (edir
->dyn_relocs
!= NULL
)
4775 struct elf_dyn_relocs
**pp
;
4776 struct elf_dyn_relocs
*p
;
4778 /* Add reloc counts against the indirect sym to the direct sym
4779 list. Merge any entries against the same section. */
4780 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4782 struct elf_dyn_relocs
*q
;
4784 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4785 if (q
->sec
== p
->sec
)
4787 q
->pc_count
+= p
->pc_count
;
4788 q
->count
+= p
->count
;
4795 *pp
= edir
->dyn_relocs
;
4798 edir
->dyn_relocs
= eind
->dyn_relocs
;
4799 eind
->dyn_relocs
= NULL
;
4802 /* Copy over got entries that we may have already seen to the
4803 symbol which just became indirect. */
4804 if (eind
->elf
.got
.glist
!= NULL
)
4806 if (edir
->elf
.got
.glist
!= NULL
)
4808 struct got_entry
**entp
;
4809 struct got_entry
*ent
;
4811 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4813 struct got_entry
*dent
;
4815 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4816 if (dent
->addend
== ent
->addend
4817 && dent
->owner
== ent
->owner
4818 && dent
->tls_type
== ent
->tls_type
)
4820 dent
->got
.refcount
+= ent
->got
.refcount
;
4827 *entp
= edir
->elf
.got
.glist
;
4830 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4831 eind
->elf
.got
.glist
= NULL
;
4834 /* And plt entries. */
4835 move_plt_plist (eind
, edir
);
4837 if (eind
->elf
.dynindx
!= -1)
4839 if (edir
->elf
.dynindx
!= -1)
4840 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4841 edir
->elf
.dynstr_index
);
4842 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4843 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4844 eind
->elf
.dynindx
= -1;
4845 eind
->elf
.dynstr_index
= 0;
4849 /* Find the function descriptor hash entry from the given function code
4850 hash entry FH. Link the entries via their OH fields. */
4852 static struct ppc_link_hash_entry
*
4853 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4855 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4859 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4861 fdh
= (struct ppc_link_hash_entry
*)
4862 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4866 fdh
->is_func_descriptor
= 1;
4872 fdh
= ppc_follow_link (fdh
);
4873 fdh
->is_func_descriptor
= 1;
4878 /* Make a fake function descriptor sym for the undefined code sym FH. */
4880 static struct ppc_link_hash_entry
*
4881 make_fdh (struct bfd_link_info
*info
,
4882 struct ppc_link_hash_entry
*fh
)
4884 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4885 struct bfd_link_hash_entry
*bh
= NULL
;
4886 struct ppc_link_hash_entry
*fdh
;
4887 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4891 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4892 fh
->elf
.root
.root
.string
+ 1,
4893 flags
, bfd_und_section_ptr
, 0,
4894 NULL
, FALSE
, FALSE
, &bh
))
4897 fdh
= (struct ppc_link_hash_entry
*) bh
;
4898 fdh
->elf
.non_elf
= 0;
4900 fdh
->is_func_descriptor
= 1;
4907 /* Fix function descriptor symbols defined in .opd sections to be
4911 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4912 struct bfd_link_info
*info
,
4913 Elf_Internal_Sym
*isym
,
4915 flagword
*flags ATTRIBUTE_UNUSED
,
4919 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4920 && (ibfd
->flags
& DYNAMIC
) == 0
4921 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4922 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4925 && strcmp ((*sec
)->name
, ".opd") == 0)
4929 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4930 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4931 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4933 /* If the symbol is a function defined in .opd, and the function
4934 code is in a discarded group, let it appear to be undefined. */
4935 if (!bfd_link_relocatable (info
)
4936 && (*sec
)->reloc_count
!= 0
4937 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4938 FALSE
) != (bfd_vma
) -1
4939 && discarded_section (code_sec
))
4941 *sec
= bfd_und_section_ptr
;
4942 isym
->st_shndx
= SHN_UNDEF
;
4945 else if (*sec
!= NULL
4946 && strcmp ((*sec
)->name
, ".toc") == 0
4947 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4949 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4951 htab
->params
->object_in_toc
= 1;
4954 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4956 if (abiversion (ibfd
) == 0)
4957 set_abiversion (ibfd
, 2);
4958 else if (abiversion (ibfd
) == 1)
4960 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4961 " for ABI version 1\n"), name
);
4962 bfd_set_error (bfd_error_bad_value
);
4970 /* Merge non-visibility st_other attributes: local entry point. */
4973 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4974 const Elf_Internal_Sym
*isym
,
4975 bfd_boolean definition
,
4976 bfd_boolean dynamic
)
4978 if (definition
&& !dynamic
)
4979 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4980 | ELF_ST_VISIBILITY (h
->other
));
4983 /* Hook called on merging a symbol. We use this to clear "fake" since
4984 we now have a real symbol. */
4987 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
4988 const Elf_Internal_Sym
*isym ATTRIBUTE_UNUSED
,
4989 asection
**psec ATTRIBUTE_UNUSED
,
4990 bfd_boolean newdef ATTRIBUTE_UNUSED
,
4991 bfd_boolean olddef ATTRIBUTE_UNUSED
,
4992 bfd
*oldbfd ATTRIBUTE_UNUSED
,
4993 const asection
*oldsec ATTRIBUTE_UNUSED
)
4995 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
4999 /* This function makes an old ABI object reference to ".bar" cause the
5000 inclusion of a new ABI object archive that defines "bar".
5001 NAME is a symbol defined in an archive. Return a symbol in the hash
5002 table that might be satisfied by the archive symbols. */
5004 static struct elf_link_hash_entry
*
5005 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5006 struct bfd_link_info
*info
,
5009 struct elf_link_hash_entry
*h
;
5013 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5015 /* Don't return this sym if it is a fake function descriptor
5016 created by add_symbol_adjust. */
5017 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5023 len
= strlen (name
);
5024 dot_name
= bfd_alloc (abfd
, len
+ 2);
5025 if (dot_name
== NULL
)
5026 return (struct elf_link_hash_entry
*) 0 - 1;
5028 memcpy (dot_name
+ 1, name
, len
+ 1);
5029 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5030 bfd_release (abfd
, dot_name
);
5034 /* This function satisfies all old ABI object references to ".bar" if a
5035 new ABI object defines "bar". Well, at least, undefined dot symbols
5036 are made weak. This stops later archive searches from including an
5037 object if we already have a function descriptor definition. It also
5038 prevents the linker complaining about undefined symbols.
5039 We also check and correct mismatched symbol visibility here. The
5040 most restrictive visibility of the function descriptor and the
5041 function entry symbol is used. */
5044 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5046 struct ppc_link_hash_table
*htab
;
5047 struct ppc_link_hash_entry
*fdh
;
5049 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5050 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5052 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5055 if (eh
->elf
.root
.root
.string
[0] != '.')
5058 htab
= ppc_hash_table (info
);
5062 fdh
= lookup_fdh (eh
, htab
);
5064 && !bfd_link_relocatable (info
)
5065 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5066 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5067 && eh
->elf
.ref_regular
)
5069 /* Make an undefined function descriptor sym, in order to
5070 pull in an --as-needed shared lib. Archives are handled
5072 fdh
= make_fdh (info
, eh
);
5079 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5080 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5082 /* Make both descriptor and entry symbol have the most
5083 constraining visibility of either symbol. */
5084 if (entry_vis
< descr_vis
)
5085 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5086 else if (entry_vis
> descr_vis
)
5087 eh
->elf
.other
+= descr_vis
- entry_vis
;
5089 /* Propagate reference flags from entry symbol to function
5090 descriptor symbol. */
5091 fdh
->elf
.root
.non_ir_ref
|= eh
->elf
.root
.non_ir_ref
;
5092 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5093 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5095 if (!fdh
->elf
.forced_local
5096 && fdh
->elf
.dynindx
== -1
5097 && fdh
->elf
.versioned
!= versioned_hidden
5098 && (bfd_link_dll (info
)
5099 || fdh
->elf
.def_dynamic
5100 || fdh
->elf
.ref_dynamic
)
5101 && (eh
->elf
.ref_regular
5102 || eh
->elf
.def_regular
))
5104 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5112 /* Set up opd section info and abiversion for IBFD, and process list
5113 of dot-symbols we made in link_hash_newfunc. */
5116 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5118 struct ppc_link_hash_table
*htab
;
5119 struct ppc_link_hash_entry
**p
, *eh
;
5120 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5122 if (opd
!= NULL
&& opd
->size
!= 0)
5124 if (abiversion (ibfd
) == 0)
5125 set_abiversion (ibfd
, 1);
5126 else if (abiversion (ibfd
) >= 2)
5128 /* xgettext:c-format */
5129 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5131 ibfd
, abiversion (ibfd
));
5132 bfd_set_error (bfd_error_bad_value
);
5136 if ((ibfd
->flags
& DYNAMIC
) == 0
5137 && (opd
->flags
& SEC_RELOC
) != 0
5138 && opd
->reloc_count
!= 0
5139 && !bfd_is_abs_section (opd
->output_section
))
5141 /* Garbage collection needs some extra help with .opd sections.
5142 We don't want to necessarily keep everything referenced by
5143 relocs in .opd, as that would keep all functions. Instead,
5144 if we reference an .opd symbol (a function descriptor), we
5145 want to keep the function code symbol's section. This is
5146 easy for global symbols, but for local syms we need to keep
5147 information about the associated function section. */
5149 asection
**opd_sym_map
;
5151 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5152 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5153 if (opd_sym_map
== NULL
)
5155 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5156 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5157 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5161 if (!is_ppc64_elf (info
->output_bfd
))
5163 htab
= ppc_hash_table (info
);
5167 /* For input files without an explicit abiversion in e_flags
5168 we should have flagged any with symbol st_other bits set
5169 as ELFv1 and above flagged those with .opd as ELFv2.
5170 Set the output abiversion if not yet set, and for any input
5171 still ambiguous, take its abiversion from the output.
5172 Differences in ABI are reported later. */
5173 if (abiversion (info
->output_bfd
) == 0)
5174 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5175 else if (abiversion (ibfd
) == 0)
5176 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5178 p
= &htab
->dot_syms
;
5179 while ((eh
= *p
) != NULL
)
5182 if (&eh
->elf
== htab
->elf
.hgot
)
5184 else if (htab
->elf
.hgot
== NULL
5185 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5186 htab
->elf
.hgot
= &eh
->elf
;
5187 else if (abiversion (ibfd
) <= 1)
5189 htab
->need_func_desc_adj
= 1;
5190 if (!add_symbol_adjust (eh
, info
))
5193 p
= &eh
->u
.next_dot_sym
;
5198 /* Undo hash table changes when an --as-needed input file is determined
5199 not to be needed. */
5202 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5203 struct bfd_link_info
*info
,
5204 enum notice_asneeded_action act
)
5206 if (act
== notice_not_needed
)
5208 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5213 htab
->dot_syms
= NULL
;
5215 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5218 /* If --just-symbols against a final linked binary, then assume we need
5219 toc adjusting stubs when calling functions defined there. */
5222 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5224 if ((sec
->flags
& SEC_CODE
) != 0
5225 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5226 && is_ppc64_elf (sec
->owner
))
5228 if (abiversion (sec
->owner
) >= 2
5229 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5230 sec
->has_toc_reloc
= 1;
5232 _bfd_elf_link_just_syms (sec
, info
);
5235 static struct plt_entry
**
5236 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5237 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5239 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5240 struct plt_entry
**local_plt
;
5241 unsigned char *local_got_tls_masks
;
5243 if (local_got_ents
== NULL
)
5245 bfd_size_type size
= symtab_hdr
->sh_info
;
5247 size
*= (sizeof (*local_got_ents
)
5248 + sizeof (*local_plt
)
5249 + sizeof (*local_got_tls_masks
));
5250 local_got_ents
= bfd_zalloc (abfd
, size
);
5251 if (local_got_ents
== NULL
)
5253 elf_local_got_ents (abfd
) = local_got_ents
;
5256 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5258 struct got_entry
*ent
;
5260 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5261 if (ent
->addend
== r_addend
5262 && ent
->owner
== abfd
5263 && ent
->tls_type
== tls_type
)
5267 bfd_size_type amt
= sizeof (*ent
);
5268 ent
= bfd_alloc (abfd
, amt
);
5271 ent
->next
= local_got_ents
[r_symndx
];
5272 ent
->addend
= r_addend
;
5274 ent
->tls_type
= tls_type
;
5275 ent
->is_indirect
= FALSE
;
5276 ent
->got
.refcount
= 0;
5277 local_got_ents
[r_symndx
] = ent
;
5279 ent
->got
.refcount
+= 1;
5282 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5283 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5284 local_got_tls_masks
[r_symndx
] |= tls_type
;
5286 return local_plt
+ r_symndx
;
5290 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5292 struct plt_entry
*ent
;
5294 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5295 if (ent
->addend
== addend
)
5299 bfd_size_type amt
= sizeof (*ent
);
5300 ent
= bfd_alloc (abfd
, amt
);
5304 ent
->addend
= addend
;
5305 ent
->plt
.refcount
= 0;
5308 ent
->plt
.refcount
+= 1;
5313 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5315 return (r_type
== R_PPC64_REL24
5316 || r_type
== R_PPC64_REL14
5317 || r_type
== R_PPC64_REL14_BRTAKEN
5318 || r_type
== R_PPC64_REL14_BRNTAKEN
5319 || r_type
== R_PPC64_ADDR24
5320 || r_type
== R_PPC64_ADDR14
5321 || r_type
== R_PPC64_ADDR14_BRTAKEN
5322 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5325 /* Look through the relocs for a section during the first phase, and
5326 calculate needed space in the global offset table, procedure
5327 linkage table, and dynamic reloc sections. */
5330 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5331 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5333 struct ppc_link_hash_table
*htab
;
5334 Elf_Internal_Shdr
*symtab_hdr
;
5335 struct elf_link_hash_entry
**sym_hashes
;
5336 const Elf_Internal_Rela
*rel
;
5337 const Elf_Internal_Rela
*rel_end
;
5339 asection
**opd_sym_map
;
5340 struct elf_link_hash_entry
*tga
, *dottga
;
5342 if (bfd_link_relocatable (info
))
5345 /* Don't do anything special with non-loaded, non-alloced sections.
5346 In particular, any relocs in such sections should not affect GOT
5347 and PLT reference counting (ie. we don't allow them to create GOT
5348 or PLT entries), there's no possibility or desire to optimize TLS
5349 relocs, and there's not much point in propagating relocs to shared
5350 libs that the dynamic linker won't relocate. */
5351 if ((sec
->flags
& SEC_ALLOC
) == 0)
5354 BFD_ASSERT (is_ppc64_elf (abfd
));
5356 htab
= ppc_hash_table (info
);
5360 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5361 FALSE
, FALSE
, TRUE
);
5362 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5363 FALSE
, FALSE
, TRUE
);
5364 symtab_hdr
= &elf_symtab_hdr (abfd
);
5365 sym_hashes
= elf_sym_hashes (abfd
);
5368 if (ppc64_elf_section_data (sec
) != NULL
5369 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5370 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5372 rel_end
= relocs
+ sec
->reloc_count
;
5373 for (rel
= relocs
; rel
< rel_end
; rel
++)
5375 unsigned long r_symndx
;
5376 struct elf_link_hash_entry
*h
;
5377 enum elf_ppc64_reloc_type r_type
;
5379 struct _ppc64_elf_section_data
*ppc64_sec
;
5380 struct plt_entry
**ifunc
, **plt_list
;
5382 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5383 if (r_symndx
< symtab_hdr
->sh_info
)
5387 struct ppc_link_hash_entry
*eh
;
5389 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5390 h
= elf_follow_link (h
);
5391 eh
= (struct ppc_link_hash_entry
*) h
;
5393 /* PR15323, ref flags aren't set for references in the same
5395 h
->root
.non_ir_ref
= 1;
5396 if (eh
->is_func
&& eh
->oh
!= NULL
)
5397 eh
->oh
->elf
.root
.non_ir_ref
= 1;
5399 if (h
== htab
->elf
.hgot
)
5400 sec
->has_toc_reloc
= 1;
5407 if (h
->type
== STT_GNU_IFUNC
)
5410 ifunc
= &h
->plt
.plist
;
5415 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5420 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5422 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5423 rel
->r_addend
, PLT_IFUNC
);
5429 r_type
= ELF64_R_TYPE (rel
->r_info
);
5434 /* These special tls relocs tie a call to __tls_get_addr with
5435 its parameter symbol. */
5438 case R_PPC64_GOT_TLSLD16
:
5439 case R_PPC64_GOT_TLSLD16_LO
:
5440 case R_PPC64_GOT_TLSLD16_HI
:
5441 case R_PPC64_GOT_TLSLD16_HA
:
5442 tls_type
= TLS_TLS
| TLS_LD
;
5445 case R_PPC64_GOT_TLSGD16
:
5446 case R_PPC64_GOT_TLSGD16_LO
:
5447 case R_PPC64_GOT_TLSGD16_HI
:
5448 case R_PPC64_GOT_TLSGD16_HA
:
5449 tls_type
= TLS_TLS
| TLS_GD
;
5452 case R_PPC64_GOT_TPREL16_DS
:
5453 case R_PPC64_GOT_TPREL16_LO_DS
:
5454 case R_PPC64_GOT_TPREL16_HI
:
5455 case R_PPC64_GOT_TPREL16_HA
:
5456 if (bfd_link_pic (info
))
5457 info
->flags
|= DF_STATIC_TLS
;
5458 tls_type
= TLS_TLS
| TLS_TPREL
;
5461 case R_PPC64_GOT_DTPREL16_DS
:
5462 case R_PPC64_GOT_DTPREL16_LO_DS
:
5463 case R_PPC64_GOT_DTPREL16_HI
:
5464 case R_PPC64_GOT_DTPREL16_HA
:
5465 tls_type
= TLS_TLS
| TLS_DTPREL
;
5467 sec
->has_tls_reloc
= 1;
5471 case R_PPC64_GOT16_DS
:
5472 case R_PPC64_GOT16_HA
:
5473 case R_PPC64_GOT16_HI
:
5474 case R_PPC64_GOT16_LO
:
5475 case R_PPC64_GOT16_LO_DS
:
5476 /* This symbol requires a global offset table entry. */
5477 sec
->has_toc_reloc
= 1;
5478 if (r_type
== R_PPC64_GOT_TLSLD16
5479 || r_type
== R_PPC64_GOT_TLSGD16
5480 || r_type
== R_PPC64_GOT_TPREL16_DS
5481 || r_type
== R_PPC64_GOT_DTPREL16_DS
5482 || r_type
== R_PPC64_GOT16
5483 || r_type
== R_PPC64_GOT16_DS
)
5485 htab
->do_multi_toc
= 1;
5486 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5489 if (ppc64_elf_tdata (abfd
)->got
== NULL
5490 && !create_got_section (abfd
, info
))
5495 struct ppc_link_hash_entry
*eh
;
5496 struct got_entry
*ent
;
5498 eh
= (struct ppc_link_hash_entry
*) h
;
5499 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5500 if (ent
->addend
== rel
->r_addend
5501 && ent
->owner
== abfd
5502 && ent
->tls_type
== tls_type
)
5506 bfd_size_type amt
= sizeof (*ent
);
5507 ent
= bfd_alloc (abfd
, amt
);
5510 ent
->next
= eh
->elf
.got
.glist
;
5511 ent
->addend
= rel
->r_addend
;
5513 ent
->tls_type
= tls_type
;
5514 ent
->is_indirect
= FALSE
;
5515 ent
->got
.refcount
= 0;
5516 eh
->elf
.got
.glist
= ent
;
5518 ent
->got
.refcount
+= 1;
5519 eh
->tls_mask
|= tls_type
;
5522 /* This is a global offset table entry for a local symbol. */
5523 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5524 rel
->r_addend
, tls_type
))
5527 /* We may also need a plt entry if the symbol turns out to be
5529 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5531 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5536 case R_PPC64_PLT16_HA
:
5537 case R_PPC64_PLT16_HI
:
5538 case R_PPC64_PLT16_LO
:
5541 /* This symbol requires a procedure linkage table entry. */
5546 if (h
->root
.root
.string
[0] == '.'
5547 && h
->root
.root
.string
[1] != '\0')
5548 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5549 plt_list
= &h
->plt
.plist
;
5551 if (plt_list
== NULL
)
5553 /* It does not make sense to have a procedure linkage
5554 table entry for a non-ifunc local symbol. */
5555 info
->callbacks
->einfo
5556 /* xgettext:c-format */
5557 (_("%P: %H: %s reloc against local symbol\n"),
5558 abfd
, sec
, rel
->r_offset
,
5559 ppc64_elf_howto_table
[r_type
]->name
);
5560 bfd_set_error (bfd_error_bad_value
);
5563 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5567 /* The following relocations don't need to propagate the
5568 relocation if linking a shared object since they are
5569 section relative. */
5570 case R_PPC64_SECTOFF
:
5571 case R_PPC64_SECTOFF_LO
:
5572 case R_PPC64_SECTOFF_HI
:
5573 case R_PPC64_SECTOFF_HA
:
5574 case R_PPC64_SECTOFF_DS
:
5575 case R_PPC64_SECTOFF_LO_DS
:
5576 case R_PPC64_DTPREL16
:
5577 case R_PPC64_DTPREL16_LO
:
5578 case R_PPC64_DTPREL16_HI
:
5579 case R_PPC64_DTPREL16_HA
:
5580 case R_PPC64_DTPREL16_DS
:
5581 case R_PPC64_DTPREL16_LO_DS
:
5582 case R_PPC64_DTPREL16_HIGH
:
5583 case R_PPC64_DTPREL16_HIGHA
:
5584 case R_PPC64_DTPREL16_HIGHER
:
5585 case R_PPC64_DTPREL16_HIGHERA
:
5586 case R_PPC64_DTPREL16_HIGHEST
:
5587 case R_PPC64_DTPREL16_HIGHESTA
:
5592 case R_PPC64_REL16_LO
:
5593 case R_PPC64_REL16_HI
:
5594 case R_PPC64_REL16_HA
:
5595 case R_PPC64_REL16DX_HA
:
5598 /* Not supported as a dynamic relocation. */
5599 case R_PPC64_ADDR64_LOCAL
:
5600 if (bfd_link_pic (info
))
5602 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5604 /* xgettext:c-format */
5605 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5606 "in shared libraries and PIEs.\n"),
5607 abfd
, sec
, rel
->r_offset
,
5608 ppc64_elf_howto_table
[r_type
]->name
);
5609 bfd_set_error (bfd_error_bad_value
);
5615 case R_PPC64_TOC16_DS
:
5616 htab
->do_multi_toc
= 1;
5617 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5619 case R_PPC64_TOC16_LO
:
5620 case R_PPC64_TOC16_HI
:
5621 case R_PPC64_TOC16_HA
:
5622 case R_PPC64_TOC16_LO_DS
:
5623 sec
->has_toc_reloc
= 1;
5630 /* This relocation describes the C++ object vtable hierarchy.
5631 Reconstruct it for later use during GC. */
5632 case R_PPC64_GNU_VTINHERIT
:
5633 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5637 /* This relocation describes which C++ vtable entries are actually
5638 used. Record for later use during GC. */
5639 case R_PPC64_GNU_VTENTRY
:
5640 BFD_ASSERT (h
!= NULL
);
5642 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5647 case R_PPC64_REL14_BRTAKEN
:
5648 case R_PPC64_REL14_BRNTAKEN
:
5650 asection
*dest
= NULL
;
5652 /* Heuristic: If jumping outside our section, chances are
5653 we are going to need a stub. */
5656 /* If the sym is weak it may be overridden later, so
5657 don't assume we know where a weak sym lives. */
5658 if (h
->root
.type
== bfd_link_hash_defined
)
5659 dest
= h
->root
.u
.def
.section
;
5663 Elf_Internal_Sym
*isym
;
5665 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5670 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5674 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5683 if (h
->root
.root
.string
[0] == '.'
5684 && h
->root
.root
.string
[1] != '\0')
5685 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5687 if (h
== tga
|| h
== dottga
)
5689 sec
->has_tls_reloc
= 1;
5691 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5692 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5693 /* We have a new-style __tls_get_addr call with
5697 /* Mark this section as having an old-style call. */
5698 sec
->has_tls_get_addr_call
= 1;
5700 plt_list
= &h
->plt
.plist
;
5703 /* We may need a .plt entry if the function this reloc
5704 refers to is in a shared lib. */
5706 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5710 case R_PPC64_ADDR14
:
5711 case R_PPC64_ADDR14_BRNTAKEN
:
5712 case R_PPC64_ADDR14_BRTAKEN
:
5713 case R_PPC64_ADDR24
:
5716 case R_PPC64_TPREL64
:
5717 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5718 if (bfd_link_pic (info
))
5719 info
->flags
|= DF_STATIC_TLS
;
5722 case R_PPC64_DTPMOD64
:
5723 if (rel
+ 1 < rel_end
5724 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5725 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5726 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5728 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5731 case R_PPC64_DTPREL64
:
5732 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5734 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5735 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5736 /* This is the second reloc of a dtpmod, dtprel pair.
5737 Don't mark with TLS_DTPREL. */
5741 sec
->has_tls_reloc
= 1;
5744 struct ppc_link_hash_entry
*eh
;
5745 eh
= (struct ppc_link_hash_entry
*) h
;
5746 eh
->tls_mask
|= tls_type
;
5749 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5750 rel
->r_addend
, tls_type
))
5753 ppc64_sec
= ppc64_elf_section_data (sec
);
5754 if (ppc64_sec
->sec_type
!= sec_toc
)
5758 /* One extra to simplify get_tls_mask. */
5759 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5760 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5761 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5763 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5764 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5765 if (ppc64_sec
->u
.toc
.add
== NULL
)
5767 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5768 ppc64_sec
->sec_type
= sec_toc
;
5770 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5771 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5772 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5774 /* Mark the second slot of a GD or LD entry.
5775 -1 to indicate GD and -2 to indicate LD. */
5776 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5777 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5778 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5779 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5782 case R_PPC64_TPREL16
:
5783 case R_PPC64_TPREL16_LO
:
5784 case R_PPC64_TPREL16_HI
:
5785 case R_PPC64_TPREL16_HA
:
5786 case R_PPC64_TPREL16_DS
:
5787 case R_PPC64_TPREL16_LO_DS
:
5788 case R_PPC64_TPREL16_HIGH
:
5789 case R_PPC64_TPREL16_HIGHA
:
5790 case R_PPC64_TPREL16_HIGHER
:
5791 case R_PPC64_TPREL16_HIGHERA
:
5792 case R_PPC64_TPREL16_HIGHEST
:
5793 case R_PPC64_TPREL16_HIGHESTA
:
5794 if (bfd_link_pic (info
))
5796 info
->flags
|= DF_STATIC_TLS
;
5801 case R_PPC64_ADDR64
:
5802 if (opd_sym_map
!= NULL
5803 && rel
+ 1 < rel_end
5804 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5807 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5811 Elf_Internal_Sym
*isym
;
5813 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5818 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5819 if (s
!= NULL
&& s
!= sec
)
5820 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5825 case R_PPC64_ADDR16
:
5826 case R_PPC64_ADDR16_DS
:
5827 case R_PPC64_ADDR16_HA
:
5828 case R_PPC64_ADDR16_HI
:
5829 case R_PPC64_ADDR16_HIGH
:
5830 case R_PPC64_ADDR16_HIGHA
:
5831 case R_PPC64_ADDR16_HIGHER
:
5832 case R_PPC64_ADDR16_HIGHERA
:
5833 case R_PPC64_ADDR16_HIGHEST
:
5834 case R_PPC64_ADDR16_HIGHESTA
:
5835 case R_PPC64_ADDR16_LO
:
5836 case R_PPC64_ADDR16_LO_DS
:
5837 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5838 && rel
->r_addend
== 0)
5840 /* We may need a .plt entry if this reloc refers to a
5841 function in a shared lib. */
5842 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5844 h
->pointer_equality_needed
= 1;
5851 case R_PPC64_ADDR32
:
5852 case R_PPC64_UADDR16
:
5853 case R_PPC64_UADDR32
:
5854 case R_PPC64_UADDR64
:
5856 if (h
!= NULL
&& !bfd_link_pic (info
))
5857 /* We may need a copy reloc. */
5860 /* Don't propagate .opd relocs. */
5861 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5864 /* If we are creating a shared library, and this is a reloc
5865 against a global symbol, or a non PC relative reloc
5866 against a local symbol, then we need to copy the reloc
5867 into the shared library. However, if we are linking with
5868 -Bsymbolic, we do not need to copy a reloc against a
5869 global symbol which is defined in an object we are
5870 including in the link (i.e., DEF_REGULAR is set). At
5871 this point we have not seen all the input files, so it is
5872 possible that DEF_REGULAR is not set now but will be set
5873 later (it is never cleared). In case of a weak definition,
5874 DEF_REGULAR may be cleared later by a strong definition in
5875 a shared library. We account for that possibility below by
5876 storing information in the dyn_relocs field of the hash
5877 table entry. A similar situation occurs when creating
5878 shared libraries and symbol visibility changes render the
5881 If on the other hand, we are creating an executable, we
5882 may need to keep relocations for symbols satisfied by a
5883 dynamic library if we manage to avoid copy relocs for the
5886 if ((bfd_link_pic (info
)
5887 && (must_be_dyn_reloc (info
, r_type
)
5889 && (!SYMBOLIC_BIND (info
, h
)
5890 || h
->root
.type
== bfd_link_hash_defweak
5891 || !h
->def_regular
))))
5892 || (ELIMINATE_COPY_RELOCS
5893 && !bfd_link_pic (info
)
5895 && (h
->root
.type
== bfd_link_hash_defweak
5896 || !h
->def_regular
))
5897 || (!bfd_link_pic (info
)
5900 /* We must copy these reloc types into the output file.
5901 Create a reloc section in dynobj and make room for
5905 sreloc
= _bfd_elf_make_dynamic_reloc_section
5906 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5912 /* If this is a global symbol, we count the number of
5913 relocations we need for this symbol. */
5916 struct elf_dyn_relocs
*p
;
5917 struct elf_dyn_relocs
**head
;
5919 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5921 if (p
== NULL
|| p
->sec
!= sec
)
5923 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5933 if (!must_be_dyn_reloc (info
, r_type
))
5938 /* Track dynamic relocs needed for local syms too.
5939 We really need local syms available to do this
5941 struct ppc_dyn_relocs
*p
;
5942 struct ppc_dyn_relocs
**head
;
5943 bfd_boolean is_ifunc
;
5946 Elf_Internal_Sym
*isym
;
5948 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5953 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5957 vpp
= &elf_section_data (s
)->local_dynrel
;
5958 head
= (struct ppc_dyn_relocs
**) vpp
;
5959 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5961 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5963 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5965 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5971 p
->ifunc
= is_ifunc
;
5987 /* Merge backend specific data from an object file to the output
5988 object file when linking. */
5991 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5993 bfd
*obfd
= info
->output_bfd
;
5994 unsigned long iflags
, oflags
;
5996 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5999 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6002 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6005 iflags
= elf_elfheader (ibfd
)->e_flags
;
6006 oflags
= elf_elfheader (obfd
)->e_flags
;
6008 if (iflags
& ~EF_PPC64_ABI
)
6011 /* xgettext:c-format */
6012 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6013 bfd_set_error (bfd_error_bad_value
);
6016 else if (iflags
!= oflags
&& iflags
!= 0)
6019 /* xgettext:c-format */
6020 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6021 ibfd
, iflags
, oflags
);
6022 bfd_set_error (bfd_error_bad_value
);
6026 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6028 /* Merge Tag_compatibility attributes and any common GNU ones. */
6029 _bfd_elf_merge_object_attributes (ibfd
, info
);
6035 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6037 /* Print normal ELF private data. */
6038 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6040 if (elf_elfheader (abfd
)->e_flags
!= 0)
6044 fprintf (file
, _("private flags = 0x%lx:"),
6045 elf_elfheader (abfd
)->e_flags
);
6047 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6048 fprintf (file
, _(" [abiv%ld]"),
6049 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6056 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6057 of the code entry point, and its section, which must be in the same
6058 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6061 opd_entry_value (asection
*opd_sec
,
6063 asection
**code_sec
,
6065 bfd_boolean in_code_sec
)
6067 bfd
*opd_bfd
= opd_sec
->owner
;
6068 Elf_Internal_Rela
*relocs
;
6069 Elf_Internal_Rela
*lo
, *hi
, *look
;
6072 /* No relocs implies we are linking a --just-symbols object, or looking
6073 at a final linked executable with addr2line or somesuch. */
6074 if (opd_sec
->reloc_count
== 0)
6076 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6078 if (contents
== NULL
)
6080 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6081 return (bfd_vma
) -1;
6082 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6085 /* PR 17512: file: 64b9dfbb. */
6086 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6087 return (bfd_vma
) -1;
6089 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6090 if (code_sec
!= NULL
)
6092 asection
*sec
, *likely
= NULL
;
6098 && val
< sec
->vma
+ sec
->size
)
6104 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6106 && (sec
->flags
& SEC_LOAD
) != 0
6107 && (sec
->flags
& SEC_ALLOC
) != 0)
6112 if (code_off
!= NULL
)
6113 *code_off
= val
- likely
->vma
;
6119 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6121 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6123 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6124 /* PR 17512: file: df8e1fd6. */
6126 return (bfd_vma
) -1;
6128 /* Go find the opd reloc at the sym address. */
6130 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6134 look
= lo
+ (hi
- lo
) / 2;
6135 if (look
->r_offset
< offset
)
6137 else if (look
->r_offset
> offset
)
6141 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6143 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6144 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6146 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6147 asection
*sec
= NULL
;
6149 if (symndx
>= symtab_hdr
->sh_info
6150 && elf_sym_hashes (opd_bfd
) != NULL
)
6152 struct elf_link_hash_entry
**sym_hashes
;
6153 struct elf_link_hash_entry
*rh
;
6155 sym_hashes
= elf_sym_hashes (opd_bfd
);
6156 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6159 rh
= elf_follow_link (rh
);
6160 if (rh
->root
.type
!= bfd_link_hash_defined
6161 && rh
->root
.type
!= bfd_link_hash_defweak
)
6163 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6165 val
= rh
->root
.u
.def
.value
;
6166 sec
= rh
->root
.u
.def
.section
;
6173 Elf_Internal_Sym
*sym
;
6175 if (symndx
< symtab_hdr
->sh_info
)
6177 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6180 size_t symcnt
= symtab_hdr
->sh_info
;
6181 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6186 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6192 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6198 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6201 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6202 val
= sym
->st_value
;
6205 val
+= look
->r_addend
;
6206 if (code_off
!= NULL
)
6208 if (code_sec
!= NULL
)
6210 if (in_code_sec
&& *code_sec
!= sec
)
6215 if (sec
->output_section
!= NULL
)
6216 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6225 /* If the ELF symbol SYM might be a function in SEC, return the
6226 function size and set *CODE_OFF to the function's entry point,
6227 otherwise return zero. */
6229 static bfd_size_type
6230 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6235 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6236 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6240 if (!(sym
->flags
& BSF_SYNTHETIC
))
6241 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6243 if (strcmp (sym
->section
->name
, ".opd") == 0)
6245 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6246 bfd_vma symval
= sym
->value
;
6249 && opd
->adjust
!= NULL
6250 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6252 /* opd_entry_value will use cached relocs that have been
6253 adjusted, but with raw symbols. That means both local
6254 and global symbols need adjusting. */
6255 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6261 if (opd_entry_value (sym
->section
, symval
,
6262 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6264 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6265 symbol. This size has nothing to do with the code size of the
6266 function, which is what we're supposed to return, but the
6267 code size isn't available without looking up the dot-sym.
6268 However, doing that would be a waste of time particularly
6269 since elf_find_function will look at the dot-sym anyway.
6270 Now, elf_find_function will keep the largest size of any
6271 function sym found at the code address of interest, so return
6272 1 here to avoid it incorrectly caching a larger function size
6273 for a small function. This does mean we return the wrong
6274 size for a new-ABI function of size 24, but all that does is
6275 disable caching for such functions. */
6281 if (sym
->section
!= sec
)
6283 *code_off
= sym
->value
;
6290 /* Return true if symbol is defined in a regular object file. */
6293 is_static_defined (struct elf_link_hash_entry
*h
)
6295 return ((h
->root
.type
== bfd_link_hash_defined
6296 || h
->root
.type
== bfd_link_hash_defweak
)
6297 && h
->root
.u
.def
.section
!= NULL
6298 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6301 /* If FDH is a function descriptor symbol, return the associated code
6302 entry symbol if it is defined. Return NULL otherwise. */
6304 static struct ppc_link_hash_entry
*
6305 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6307 if (fdh
->is_func_descriptor
)
6309 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6310 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6311 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6317 /* If FH is a function code entry symbol, return the associated
6318 function descriptor symbol if it is defined. Return NULL otherwise. */
6320 static struct ppc_link_hash_entry
*
6321 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6324 && fh
->oh
->is_func_descriptor
)
6326 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6327 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6328 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6334 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6336 /* Garbage collect sections, after first dealing with dot-symbols. */
6339 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6341 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6343 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6345 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6346 htab
->need_func_desc_adj
= 0;
6348 return bfd_elf_gc_sections (abfd
, info
);
6351 /* Mark all our entry sym sections, both opd and code section. */
6354 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6356 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6357 struct bfd_sym_chain
*sym
;
6362 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6364 struct ppc_link_hash_entry
*eh
, *fh
;
6367 eh
= (struct ppc_link_hash_entry
*)
6368 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6371 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6372 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6375 fh
= defined_code_entry (eh
);
6378 sec
= fh
->elf
.root
.u
.def
.section
;
6379 sec
->flags
|= SEC_KEEP
;
6381 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6382 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6383 eh
->elf
.root
.u
.def
.value
,
6384 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6385 sec
->flags
|= SEC_KEEP
;
6387 sec
= eh
->elf
.root
.u
.def
.section
;
6388 sec
->flags
|= SEC_KEEP
;
6392 /* Mark sections containing dynamically referenced symbols. When
6393 building shared libraries, we must assume that any visible symbol is
6397 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6399 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6400 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6401 struct ppc_link_hash_entry
*fdh
;
6402 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6404 /* Dynamic linking info is on the func descriptor sym. */
6405 fdh
= defined_func_desc (eh
);
6409 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6410 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6411 && (eh
->elf
.ref_dynamic
6412 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6413 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6414 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6415 && (!bfd_link_executable (info
)
6416 || info
->export_dynamic
6419 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6420 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6421 || !bfd_hide_sym_by_version (info
->version_info
,
6422 eh
->elf
.root
.root
.string
)))))
6425 struct ppc_link_hash_entry
*fh
;
6427 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6429 /* Function descriptor syms cause the associated
6430 function code sym section to be marked. */
6431 fh
= defined_code_entry (eh
);
6434 code_sec
= fh
->elf
.root
.u
.def
.section
;
6435 code_sec
->flags
|= SEC_KEEP
;
6437 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6438 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6439 eh
->elf
.root
.u
.def
.value
,
6440 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6441 code_sec
->flags
|= SEC_KEEP
;
6447 /* Return the section that should be marked against GC for a given
6451 ppc64_elf_gc_mark_hook (asection
*sec
,
6452 struct bfd_link_info
*info
,
6453 Elf_Internal_Rela
*rel
,
6454 struct elf_link_hash_entry
*h
,
6455 Elf_Internal_Sym
*sym
)
6459 /* Syms return NULL if we're marking .opd, so we avoid marking all
6460 function sections, as all functions are referenced in .opd. */
6462 if (get_opd_info (sec
) != NULL
)
6467 enum elf_ppc64_reloc_type r_type
;
6468 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6470 r_type
= ELF64_R_TYPE (rel
->r_info
);
6473 case R_PPC64_GNU_VTINHERIT
:
6474 case R_PPC64_GNU_VTENTRY
:
6478 switch (h
->root
.type
)
6480 case bfd_link_hash_defined
:
6481 case bfd_link_hash_defweak
:
6482 eh
= (struct ppc_link_hash_entry
*) h
;
6483 fdh
= defined_func_desc (eh
);
6486 /* -mcall-aixdesc code references the dot-symbol on
6487 a call reloc. Mark the function descriptor too
6488 against garbage collection. */
6490 if (fdh
->elf
.u
.weakdef
!= NULL
)
6491 fdh
->elf
.u
.weakdef
->mark
= 1;
6495 /* Function descriptor syms cause the associated
6496 function code sym section to be marked. */
6497 fh
= defined_code_entry (eh
);
6500 /* They also mark their opd section. */
6501 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6503 rsec
= fh
->elf
.root
.u
.def
.section
;
6505 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6506 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6507 eh
->elf
.root
.u
.def
.value
,
6508 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6509 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6511 rsec
= h
->root
.u
.def
.section
;
6514 case bfd_link_hash_common
:
6515 rsec
= h
->root
.u
.c
.p
->section
;
6519 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6525 struct _opd_sec_data
*opd
;
6527 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6528 opd
= get_opd_info (rsec
);
6529 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6533 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6540 /* Update the .got, .plt. and dynamic reloc reference counts for the
6541 section being removed. */
6544 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6545 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6547 struct ppc_link_hash_table
*htab
;
6548 Elf_Internal_Shdr
*symtab_hdr
;
6549 struct elf_link_hash_entry
**sym_hashes
;
6550 struct got_entry
**local_got_ents
;
6551 const Elf_Internal_Rela
*rel
, *relend
;
6553 if (bfd_link_relocatable (info
))
6556 if ((sec
->flags
& SEC_ALLOC
) == 0)
6559 elf_section_data (sec
)->local_dynrel
= NULL
;
6561 htab
= ppc_hash_table (info
);
6565 symtab_hdr
= &elf_symtab_hdr (abfd
);
6566 sym_hashes
= elf_sym_hashes (abfd
);
6567 local_got_ents
= elf_local_got_ents (abfd
);
6569 relend
= relocs
+ sec
->reloc_count
;
6570 for (rel
= relocs
; rel
< relend
; rel
++)
6572 unsigned long r_symndx
;
6573 enum elf_ppc64_reloc_type r_type
;
6574 struct elf_link_hash_entry
*h
= NULL
;
6575 struct plt_entry
**plt_list
;
6576 unsigned char tls_type
= 0;
6578 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6579 r_type
= ELF64_R_TYPE (rel
->r_info
);
6580 if (r_symndx
>= symtab_hdr
->sh_info
)
6582 struct ppc_link_hash_entry
*eh
;
6583 struct elf_dyn_relocs
**pp
;
6584 struct elf_dyn_relocs
*p
;
6586 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6587 h
= elf_follow_link (h
);
6588 eh
= (struct ppc_link_hash_entry
*) h
;
6590 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6593 /* Everything must go for SEC. */
6601 case R_PPC64_GOT_TLSLD16
:
6602 case R_PPC64_GOT_TLSLD16_LO
:
6603 case R_PPC64_GOT_TLSLD16_HI
:
6604 case R_PPC64_GOT_TLSLD16_HA
:
6605 tls_type
= TLS_TLS
| TLS_LD
;
6608 case R_PPC64_GOT_TLSGD16
:
6609 case R_PPC64_GOT_TLSGD16_LO
:
6610 case R_PPC64_GOT_TLSGD16_HI
:
6611 case R_PPC64_GOT_TLSGD16_HA
:
6612 tls_type
= TLS_TLS
| TLS_GD
;
6615 case R_PPC64_GOT_TPREL16_DS
:
6616 case R_PPC64_GOT_TPREL16_LO_DS
:
6617 case R_PPC64_GOT_TPREL16_HI
:
6618 case R_PPC64_GOT_TPREL16_HA
:
6619 tls_type
= TLS_TLS
| TLS_TPREL
;
6622 case R_PPC64_GOT_DTPREL16_DS
:
6623 case R_PPC64_GOT_DTPREL16_LO_DS
:
6624 case R_PPC64_GOT_DTPREL16_HI
:
6625 case R_PPC64_GOT_DTPREL16_HA
:
6626 tls_type
= TLS_TLS
| TLS_DTPREL
;
6630 case R_PPC64_GOT16_DS
:
6631 case R_PPC64_GOT16_HA
:
6632 case R_PPC64_GOT16_HI
:
6633 case R_PPC64_GOT16_LO
:
6634 case R_PPC64_GOT16_LO_DS
:
6637 struct got_entry
*ent
;
6642 ent
= local_got_ents
[r_symndx
];
6644 for (; ent
!= NULL
; ent
= ent
->next
)
6645 if (ent
->addend
== rel
->r_addend
6646 && ent
->owner
== abfd
6647 && ent
->tls_type
== tls_type
)
6651 if (ent
->got
.refcount
> 0)
6652 ent
->got
.refcount
-= 1;
6656 case R_PPC64_PLT16_HA
:
6657 case R_PPC64_PLT16_HI
:
6658 case R_PPC64_PLT16_LO
:
6662 case R_PPC64_REL14_BRNTAKEN
:
6663 case R_PPC64_REL14_BRTAKEN
:
6667 plt_list
= &h
->plt
.plist
;
6668 else if (local_got_ents
!= NULL
)
6670 struct plt_entry
**local_plt
= (struct plt_entry
**)
6671 (local_got_ents
+ symtab_hdr
->sh_info
);
6672 unsigned char *local_got_tls_masks
= (unsigned char *)
6673 (local_plt
+ symtab_hdr
->sh_info
);
6674 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6675 plt_list
= local_plt
+ r_symndx
;
6679 struct plt_entry
*ent
;
6681 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6682 if (ent
->addend
== rel
->r_addend
)
6684 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6685 ent
->plt
.refcount
-= 1;
6696 /* The maximum size of .sfpr. */
6697 #define SFPR_MAX (218*4)
6699 struct sfpr_def_parms
6701 const char name
[12];
6702 unsigned char lo
, hi
;
6703 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6704 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6707 /* Auto-generate _save*, _rest* functions in .sfpr.
6708 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6712 sfpr_define (struct bfd_link_info
*info
,
6713 const struct sfpr_def_parms
*parm
,
6716 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6718 size_t len
= strlen (parm
->name
);
6719 bfd_boolean writing
= FALSE
;
6725 memcpy (sym
, parm
->name
, len
);
6728 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6730 struct ppc_link_hash_entry
*h
;
6732 sym
[len
+ 0] = i
/ 10 + '0';
6733 sym
[len
+ 1] = i
% 10 + '0';
6734 h
= (struct ppc_link_hash_entry
*)
6735 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6736 if (stub_sec
!= NULL
)
6739 && h
->elf
.root
.type
== bfd_link_hash_defined
6740 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6742 struct elf_link_hash_entry
*s
;
6744 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6745 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6748 if (s
->root
.type
== bfd_link_hash_new
6749 || (s
->root
.type
= bfd_link_hash_defined
6750 && s
->root
.u
.def
.section
== stub_sec
))
6752 s
->root
.type
= bfd_link_hash_defined
;
6753 s
->root
.u
.def
.section
= stub_sec
;
6754 s
->root
.u
.def
.value
= (stub_sec
->size
6755 + h
->elf
.root
.u
.def
.value
);
6758 s
->ref_regular_nonweak
= 1;
6759 s
->forced_local
= 1;
6761 s
->root
.linker_def
= 1;
6769 if (!h
->elf
.def_regular
)
6771 h
->elf
.root
.type
= bfd_link_hash_defined
;
6772 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6773 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6774 h
->elf
.type
= STT_FUNC
;
6775 h
->elf
.def_regular
= 1;
6777 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6779 if (htab
->sfpr
->contents
== NULL
)
6781 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6782 if (htab
->sfpr
->contents
== NULL
)
6789 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6791 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6793 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6794 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6802 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6804 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6809 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6811 p
= savegpr0 (abfd
, p
, r
);
6812 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6814 bfd_put_32 (abfd
, BLR
, p
);
6819 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6821 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6826 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6828 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6830 p
= restgpr0 (abfd
, p
, r
);
6831 bfd_put_32 (abfd
, MTLR_R0
, p
);
6835 p
= restgpr0 (abfd
, p
, 30);
6836 p
= restgpr0 (abfd
, p
, 31);
6838 bfd_put_32 (abfd
, BLR
, p
);
6843 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6845 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6850 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6852 p
= savegpr1 (abfd
, p
, r
);
6853 bfd_put_32 (abfd
, BLR
, p
);
6858 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6860 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6865 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6867 p
= restgpr1 (abfd
, p
, r
);
6868 bfd_put_32 (abfd
, BLR
, p
);
6873 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6875 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6880 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6882 p
= savefpr (abfd
, p
, r
);
6883 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6885 bfd_put_32 (abfd
, BLR
, p
);
6890 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6892 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6897 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6899 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6901 p
= restfpr (abfd
, p
, r
);
6902 bfd_put_32 (abfd
, MTLR_R0
, p
);
6906 p
= restfpr (abfd
, p
, 30);
6907 p
= restfpr (abfd
, p
, 31);
6909 bfd_put_32 (abfd
, BLR
, p
);
6914 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6916 p
= savefpr (abfd
, p
, r
);
6917 bfd_put_32 (abfd
, BLR
, p
);
6922 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6924 p
= restfpr (abfd
, p
, r
);
6925 bfd_put_32 (abfd
, BLR
, p
);
6930 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6932 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6934 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6939 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6941 p
= savevr (abfd
, p
, r
);
6942 bfd_put_32 (abfd
, BLR
, p
);
6947 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6949 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6951 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6956 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6958 p
= restvr (abfd
, p
, r
);
6959 bfd_put_32 (abfd
, BLR
, p
);
6963 /* Called via elf_link_hash_traverse to transfer dynamic linking
6964 information on function code symbol entries to their corresponding
6965 function descriptor symbol entries. */
6968 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6970 struct bfd_link_info
*info
;
6971 struct ppc_link_hash_table
*htab
;
6972 struct ppc_link_hash_entry
*fh
;
6973 struct ppc_link_hash_entry
*fdh
;
6974 bfd_boolean force_local
;
6976 fh
= (struct ppc_link_hash_entry
*) h
;
6977 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6983 if (fh
->elf
.root
.root
.string
[0] != '.'
6984 || fh
->elf
.root
.root
.string
[1] == '\0')
6988 htab
= ppc_hash_table (info
);
6992 /* Find the corresponding function descriptor symbol. */
6993 fdh
= lookup_fdh (fh
, htab
);
6995 /* Resolve undefined references to dot-symbols as the value
6996 in the function descriptor, if we have one in a regular object.
6997 This is to satisfy cases like ".quad .foo". Calls to functions
6998 in dynamic objects are handled elsewhere. */
6999 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7000 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7001 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7002 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7003 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7004 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7005 fdh
->elf
.root
.u
.def
.value
,
7006 &fh
->elf
.root
.u
.def
.section
,
7007 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7009 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7010 fh
->elf
.forced_local
= 1;
7011 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7012 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7015 if (!fh
->elf
.dynamic
)
7017 struct plt_entry
*ent
;
7019 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7020 if (ent
->plt
.refcount
> 0)
7026 /* Create a descriptor as undefined if necessary. */
7028 && !bfd_link_executable (info
)
7029 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7030 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7032 fdh
= make_fdh (info
, fh
);
7037 /* We can't support overriding of symbols on a fake descriptor. */
7040 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7041 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7042 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7044 /* Transfer dynamic linking information to the function descriptor. */
7047 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7048 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7049 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7050 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7051 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7052 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7053 || fh
->elf
.type
== STT_FUNC
7054 || fh
->elf
.type
== STT_GNU_IFUNC
);
7055 move_plt_plist (fh
, fdh
);
7057 if (!fdh
->elf
.forced_local
7058 && fh
->elf
.dynindx
!= -1)
7059 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7063 /* Now that the info is on the function descriptor, clear the
7064 function code sym info. Any function code syms for which we
7065 don't have a definition in a regular file, we force local.
7066 This prevents a shared library from exporting syms that have
7067 been imported from another library. Function code syms that
7068 are really in the library we must leave global to prevent the
7069 linker dragging in a definition from a static library. */
7070 force_local
= (!fh
->elf
.def_regular
7072 || !fdh
->elf
.def_regular
7073 || fdh
->elf
.forced_local
);
7074 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7079 static const struct sfpr_def_parms save_res_funcs
[] =
7081 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7082 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7083 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7084 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7085 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7086 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7087 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7088 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7089 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7090 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7091 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7092 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7095 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7096 this hook to a) provide some gcc support functions, and b) transfer
7097 dynamic linking information gathered so far on function code symbol
7098 entries, to their corresponding function descriptor symbol entries. */
7101 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7102 struct bfd_link_info
*info
)
7104 struct ppc_link_hash_table
*htab
;
7106 htab
= ppc_hash_table (info
);
7110 /* Provide any missing _save* and _rest* functions. */
7111 if (htab
->sfpr
!= NULL
)
7115 htab
->sfpr
->size
= 0;
7116 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7117 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7119 if (htab
->sfpr
->size
== 0)
7120 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7123 if (bfd_link_relocatable (info
))
7126 if (htab
->elf
.hgot
!= NULL
)
7128 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7129 /* Make .TOC. defined so as to prevent it being made dynamic.
7130 The wrong value here is fixed later in ppc64_elf_set_toc. */
7131 if (!htab
->elf
.hgot
->def_regular
7132 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7134 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7135 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7136 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7137 htab
->elf
.hgot
->def_regular
= 1;
7138 htab
->elf
.hgot
->root
.linker_def
= 1;
7140 htab
->elf
.hgot
->type
= STT_OBJECT
;
7141 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7145 if (htab
->need_func_desc_adj
)
7147 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7148 htab
->need_func_desc_adj
= 0;
7154 /* Return true if we have dynamic relocs against H that apply to
7155 read-only sections. */
7158 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7160 struct ppc_link_hash_entry
*eh
;
7161 struct elf_dyn_relocs
*p
;
7163 eh
= (struct ppc_link_hash_entry
*) h
;
7164 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7166 asection
*s
= p
->sec
->output_section
;
7168 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7174 /* Return true if we have dynamic relocs against H or any of its weak
7175 aliases, that apply to read-only sections. */
7178 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7180 struct ppc_link_hash_entry
*eh
;
7182 eh
= (struct ppc_link_hash_entry
*) h
;
7185 if (readonly_dynrelocs (&eh
->elf
))
7188 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7193 /* Return whether EH has pc-relative dynamic relocs. */
7196 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7198 struct elf_dyn_relocs
*p
;
7200 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7201 if (p
->pc_count
!= 0)
7206 /* Return true if a global entry stub will be created for H. Valid
7207 for ELFv2 before plt entries have been allocated. */
7210 global_entry_stub (struct elf_link_hash_entry
*h
)
7212 struct plt_entry
*pent
;
7214 if (!h
->pointer_equality_needed
7218 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7219 if (pent
->plt
.refcount
> 0
7220 && pent
->addend
== 0)
7226 /* Adjust a symbol defined by a dynamic object and referenced by a
7227 regular object. The current definition is in some section of the
7228 dynamic object, but we're not including those sections. We have to
7229 change the definition to something the rest of the link can
7233 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7234 struct elf_link_hash_entry
*h
)
7236 struct ppc_link_hash_table
*htab
;
7239 htab
= ppc_hash_table (info
);
7243 /* Deal with function syms. */
7244 if (h
->type
== STT_FUNC
7245 || h
->type
== STT_GNU_IFUNC
7248 /* Clear procedure linkage table information for any symbol that
7249 won't need a .plt entry. */
7250 struct plt_entry
*ent
;
7251 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7252 if (ent
->plt
.refcount
> 0)
7255 || (h
->type
!= STT_GNU_IFUNC
7256 && (SYMBOL_CALLS_LOCAL (info
, h
)
7257 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7258 && h
->root
.type
== bfd_link_hash_undefweak
)))
7259 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7261 h
->plt
.plist
= NULL
;
7263 h
->pointer_equality_needed
= 0;
7265 else if (abiversion (info
->output_bfd
) >= 2)
7267 /* Taking a function's address in a read/write section
7268 doesn't require us to define the function symbol in the
7269 executable on a global entry stub. A dynamic reloc can
7270 be used instead. The reason we prefer a few more dynamic
7271 relocs is that calling via a global entry stub costs a
7272 few more instructions, and pointer_equality_needed causes
7273 extra work in ld.so when resolving these symbols. */
7274 if (global_entry_stub (h
)
7275 && !alias_readonly_dynrelocs (h
))
7277 h
->pointer_equality_needed
= 0;
7278 /* After adjust_dynamic_symbol, non_got_ref set in
7279 the non-pic case means that dyn_relocs for this
7280 symbol should be discarded. */
7284 /* If making a plt entry, then we don't need copy relocs. */
7289 h
->plt
.plist
= NULL
;
7291 /* If this is a weak symbol, and there is a real definition, the
7292 processor independent code will have arranged for us to see the
7293 real definition first, and we can just use the same value. */
7294 if (h
->u
.weakdef
!= NULL
)
7296 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7297 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7298 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7299 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7300 if (ELIMINATE_COPY_RELOCS
)
7301 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7305 /* If we are creating a shared library, we must presume that the
7306 only references to the symbol are via the global offset table.
7307 For such cases we need not do anything here; the relocations will
7308 be handled correctly by relocate_section. */
7309 if (bfd_link_pic (info
))
7312 /* If there are no references to this symbol that do not use the
7313 GOT, we don't need to generate a copy reloc. */
7314 if (!h
->non_got_ref
)
7317 /* Don't generate a copy reloc for symbols defined in the executable. */
7318 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7320 /* If -z nocopyreloc was given, don't generate them either. */
7321 || info
->nocopyreloc
7323 /* If we didn't find any dynamic relocs in read-only sections, then
7324 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7325 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7327 /* Protected variables do not work with .dynbss. The copy in
7328 .dynbss won't be used by the shared library with the protected
7329 definition for the variable. Text relocations are preferable
7330 to an incorrect program. */
7331 || h
->protected_def
)
7337 if (h
->plt
.plist
!= NULL
)
7339 /* We should never get here, but unfortunately there are versions
7340 of gcc out there that improperly (for this ABI) put initialized
7341 function pointers, vtable refs and suchlike in read-only
7342 sections. Allow them to proceed, but warn that this might
7343 break at runtime. */
7344 info
->callbacks
->einfo
7345 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7346 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7347 h
->root
.root
.string
);
7350 /* This is a reference to a symbol defined by a dynamic object which
7351 is not a function. */
7353 /* We must allocate the symbol in our .dynbss section, which will
7354 become part of the .bss section of the executable. There will be
7355 an entry for this symbol in the .dynsym section. The dynamic
7356 object will contain position independent code, so all references
7357 from the dynamic object to this symbol will go through the global
7358 offset table. The dynamic linker will use the .dynsym entry to
7359 determine the address it must put in the global offset table, so
7360 both the dynamic object and the regular object will refer to the
7361 same memory location for the variable. */
7363 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7364 to copy the initial value out of the dynamic object and into the
7365 runtime process image. We need to remember the offset into the
7366 .rela.bss section we are going to use. */
7367 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7369 s
= htab
->elf
.sdynrelro
;
7370 srel
= htab
->elf
.sreldynrelro
;
7374 s
= htab
->elf
.sdynbss
;
7375 srel
= htab
->elf
.srelbss
;
7377 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7379 srel
->size
+= sizeof (Elf64_External_Rela
);
7383 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7386 /* If given a function descriptor symbol, hide both the function code
7387 sym and the descriptor. */
7389 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7390 struct elf_link_hash_entry
*h
,
7391 bfd_boolean force_local
)
7393 struct ppc_link_hash_entry
*eh
;
7394 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7396 eh
= (struct ppc_link_hash_entry
*) h
;
7397 if (eh
->is_func_descriptor
)
7399 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7404 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7407 /* We aren't supposed to use alloca in BFD because on
7408 systems which do not have alloca the version in libiberty
7409 calls xmalloc, which might cause the program to crash
7410 when it runs out of memory. This function doesn't have a
7411 return status, so there's no way to gracefully return an
7412 error. So cheat. We know that string[-1] can be safely
7413 accessed; It's either a string in an ELF string table,
7414 or allocated in an objalloc structure. */
7416 p
= eh
->elf
.root
.root
.string
- 1;
7419 fh
= (struct ppc_link_hash_entry
*)
7420 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7423 /* Unfortunately, if it so happens that the string we were
7424 looking for was allocated immediately before this string,
7425 then we overwrote the string terminator. That's the only
7426 reason the lookup should fail. */
7429 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7430 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7432 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7433 fh
= (struct ppc_link_hash_entry
*)
7434 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7443 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7448 get_sym_h (struct elf_link_hash_entry
**hp
,
7449 Elf_Internal_Sym
**symp
,
7451 unsigned char **tls_maskp
,
7452 Elf_Internal_Sym
**locsymsp
,
7453 unsigned long r_symndx
,
7456 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7458 if (r_symndx
>= symtab_hdr
->sh_info
)
7460 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7461 struct elf_link_hash_entry
*h
;
7463 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7464 h
= elf_follow_link (h
);
7472 if (symsecp
!= NULL
)
7474 asection
*symsec
= NULL
;
7475 if (h
->root
.type
== bfd_link_hash_defined
7476 || h
->root
.type
== bfd_link_hash_defweak
)
7477 symsec
= h
->root
.u
.def
.section
;
7481 if (tls_maskp
!= NULL
)
7483 struct ppc_link_hash_entry
*eh
;
7485 eh
= (struct ppc_link_hash_entry
*) h
;
7486 *tls_maskp
= &eh
->tls_mask
;
7491 Elf_Internal_Sym
*sym
;
7492 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7494 if (locsyms
== NULL
)
7496 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7497 if (locsyms
== NULL
)
7498 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7499 symtab_hdr
->sh_info
,
7500 0, NULL
, NULL
, NULL
);
7501 if (locsyms
== NULL
)
7503 *locsymsp
= locsyms
;
7505 sym
= locsyms
+ r_symndx
;
7513 if (symsecp
!= NULL
)
7514 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7516 if (tls_maskp
!= NULL
)
7518 struct got_entry
**lgot_ents
;
7519 unsigned char *tls_mask
;
7522 lgot_ents
= elf_local_got_ents (ibfd
);
7523 if (lgot_ents
!= NULL
)
7525 struct plt_entry
**local_plt
= (struct plt_entry
**)
7526 (lgot_ents
+ symtab_hdr
->sh_info
);
7527 unsigned char *lgot_masks
= (unsigned char *)
7528 (local_plt
+ symtab_hdr
->sh_info
);
7529 tls_mask
= &lgot_masks
[r_symndx
];
7531 *tls_maskp
= tls_mask
;
7537 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7538 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7539 type suitable for optimization, and 1 otherwise. */
7542 get_tls_mask (unsigned char **tls_maskp
,
7543 unsigned long *toc_symndx
,
7544 bfd_vma
*toc_addend
,
7545 Elf_Internal_Sym
**locsymsp
,
7546 const Elf_Internal_Rela
*rel
,
7549 unsigned long r_symndx
;
7551 struct elf_link_hash_entry
*h
;
7552 Elf_Internal_Sym
*sym
;
7556 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7557 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7560 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7562 || ppc64_elf_section_data (sec
) == NULL
7563 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7566 /* Look inside a TOC section too. */
7569 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7570 off
= h
->root
.u
.def
.value
;
7573 off
= sym
->st_value
;
7574 off
+= rel
->r_addend
;
7575 BFD_ASSERT (off
% 8 == 0);
7576 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7577 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7578 if (toc_symndx
!= NULL
)
7579 *toc_symndx
= r_symndx
;
7580 if (toc_addend
!= NULL
)
7581 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7582 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7584 if ((h
== NULL
|| is_static_defined (h
))
7585 && (next_r
== -1 || next_r
== -2))
7590 /* Find (or create) an entry in the tocsave hash table. */
7592 static struct tocsave_entry
*
7593 tocsave_find (struct ppc_link_hash_table
*htab
,
7594 enum insert_option insert
,
7595 Elf_Internal_Sym
**local_syms
,
7596 const Elf_Internal_Rela
*irela
,
7599 unsigned long r_indx
;
7600 struct elf_link_hash_entry
*h
;
7601 Elf_Internal_Sym
*sym
;
7602 struct tocsave_entry ent
, *p
;
7604 struct tocsave_entry
**slot
;
7606 r_indx
= ELF64_R_SYM (irela
->r_info
);
7607 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7609 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7612 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7617 ent
.offset
= h
->root
.u
.def
.value
;
7619 ent
.offset
= sym
->st_value
;
7620 ent
.offset
+= irela
->r_addend
;
7622 hash
= tocsave_htab_hash (&ent
);
7623 slot
= ((struct tocsave_entry
**)
7624 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7630 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7639 /* Adjust all global syms defined in opd sections. In gcc generated
7640 code for the old ABI, these will already have been done. */
7643 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7645 struct ppc_link_hash_entry
*eh
;
7647 struct _opd_sec_data
*opd
;
7649 if (h
->root
.type
== bfd_link_hash_indirect
)
7652 if (h
->root
.type
!= bfd_link_hash_defined
7653 && h
->root
.type
!= bfd_link_hash_defweak
)
7656 eh
= (struct ppc_link_hash_entry
*) h
;
7657 if (eh
->adjust_done
)
7660 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7661 opd
= get_opd_info (sym_sec
);
7662 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7664 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7667 /* This entry has been deleted. */
7668 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7671 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7672 if (discarded_section (dsec
))
7674 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7678 eh
->elf
.root
.u
.def
.value
= 0;
7679 eh
->elf
.root
.u
.def
.section
= dsec
;
7682 eh
->elf
.root
.u
.def
.value
+= adjust
;
7683 eh
->adjust_done
= 1;
7688 /* Handles decrementing dynamic reloc counts for the reloc specified by
7689 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7690 have already been determined. */
7693 dec_dynrel_count (bfd_vma r_info
,
7695 struct bfd_link_info
*info
,
7696 Elf_Internal_Sym
**local_syms
,
7697 struct elf_link_hash_entry
*h
,
7698 Elf_Internal_Sym
*sym
)
7700 enum elf_ppc64_reloc_type r_type
;
7701 asection
*sym_sec
= NULL
;
7703 /* Can this reloc be dynamic? This switch, and later tests here
7704 should be kept in sync with the code in check_relocs. */
7705 r_type
= ELF64_R_TYPE (r_info
);
7711 case R_PPC64_TPREL16
:
7712 case R_PPC64_TPREL16_LO
:
7713 case R_PPC64_TPREL16_HI
:
7714 case R_PPC64_TPREL16_HA
:
7715 case R_PPC64_TPREL16_DS
:
7716 case R_PPC64_TPREL16_LO_DS
:
7717 case R_PPC64_TPREL16_HIGH
:
7718 case R_PPC64_TPREL16_HIGHA
:
7719 case R_PPC64_TPREL16_HIGHER
:
7720 case R_PPC64_TPREL16_HIGHERA
:
7721 case R_PPC64_TPREL16_HIGHEST
:
7722 case R_PPC64_TPREL16_HIGHESTA
:
7723 if (!bfd_link_pic (info
))
7726 case R_PPC64_TPREL64
:
7727 case R_PPC64_DTPMOD64
:
7728 case R_PPC64_DTPREL64
:
7729 case R_PPC64_ADDR64
:
7733 case R_PPC64_ADDR14
:
7734 case R_PPC64_ADDR14_BRNTAKEN
:
7735 case R_PPC64_ADDR14_BRTAKEN
:
7736 case R_PPC64_ADDR16
:
7737 case R_PPC64_ADDR16_DS
:
7738 case R_PPC64_ADDR16_HA
:
7739 case R_PPC64_ADDR16_HI
:
7740 case R_PPC64_ADDR16_HIGH
:
7741 case R_PPC64_ADDR16_HIGHA
:
7742 case R_PPC64_ADDR16_HIGHER
:
7743 case R_PPC64_ADDR16_HIGHERA
:
7744 case R_PPC64_ADDR16_HIGHEST
:
7745 case R_PPC64_ADDR16_HIGHESTA
:
7746 case R_PPC64_ADDR16_LO
:
7747 case R_PPC64_ADDR16_LO_DS
:
7748 case R_PPC64_ADDR24
:
7749 case R_PPC64_ADDR32
:
7750 case R_PPC64_UADDR16
:
7751 case R_PPC64_UADDR32
:
7752 case R_PPC64_UADDR64
:
7757 if (local_syms
!= NULL
)
7759 unsigned long r_symndx
;
7760 bfd
*ibfd
= sec
->owner
;
7762 r_symndx
= ELF64_R_SYM (r_info
);
7763 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7767 if ((bfd_link_pic (info
)
7768 && (must_be_dyn_reloc (info
, r_type
)
7770 && (!SYMBOLIC_BIND (info
, h
)
7771 || h
->root
.type
== bfd_link_hash_defweak
7772 || !h
->def_regular
))))
7773 || (ELIMINATE_COPY_RELOCS
7774 && !bfd_link_pic (info
)
7776 && (h
->root
.type
== bfd_link_hash_defweak
7777 || !h
->def_regular
)))
7784 struct elf_dyn_relocs
*p
;
7785 struct elf_dyn_relocs
**pp
;
7786 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7788 /* elf_gc_sweep may have already removed all dyn relocs associated
7789 with local syms for a given section. Also, symbol flags are
7790 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7791 report a dynreloc miscount. */
7792 if (*pp
== NULL
&& info
->gc_sections
)
7795 while ((p
= *pp
) != NULL
)
7799 if (!must_be_dyn_reloc (info
, r_type
))
7811 struct ppc_dyn_relocs
*p
;
7812 struct ppc_dyn_relocs
**pp
;
7814 bfd_boolean is_ifunc
;
7816 if (local_syms
== NULL
)
7817 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7818 if (sym_sec
== NULL
)
7821 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7822 pp
= (struct ppc_dyn_relocs
**) vpp
;
7824 if (*pp
== NULL
&& info
->gc_sections
)
7827 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7828 while ((p
= *pp
) != NULL
)
7830 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7841 /* xgettext:c-format */
7842 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7844 bfd_set_error (bfd_error_bad_value
);
7848 /* Remove unused Official Procedure Descriptor entries. Currently we
7849 only remove those associated with functions in discarded link-once
7850 sections, or weakly defined functions that have been overridden. It
7851 would be possible to remove many more entries for statically linked
7855 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7858 bfd_boolean some_edited
= FALSE
;
7859 asection
*need_pad
= NULL
;
7860 struct ppc_link_hash_table
*htab
;
7862 htab
= ppc_hash_table (info
);
7866 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7869 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7870 Elf_Internal_Shdr
*symtab_hdr
;
7871 Elf_Internal_Sym
*local_syms
;
7872 struct _opd_sec_data
*opd
;
7873 bfd_boolean need_edit
, add_aux_fields
, broken
;
7874 bfd_size_type cnt_16b
= 0;
7876 if (!is_ppc64_elf (ibfd
))
7879 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7880 if (sec
== NULL
|| sec
->size
== 0)
7883 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7886 if (sec
->output_section
== bfd_abs_section_ptr
)
7889 /* Look through the section relocs. */
7890 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7894 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7896 /* Read the relocations. */
7897 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7899 if (relstart
== NULL
)
7902 /* First run through the relocs to check they are sane, and to
7903 determine whether we need to edit this opd section. */
7907 relend
= relstart
+ sec
->reloc_count
;
7908 for (rel
= relstart
; rel
< relend
; )
7910 enum elf_ppc64_reloc_type r_type
;
7911 unsigned long r_symndx
;
7913 struct elf_link_hash_entry
*h
;
7914 Elf_Internal_Sym
*sym
;
7917 /* .opd contains an array of 16 or 24 byte entries. We're
7918 only interested in the reloc pointing to a function entry
7920 offset
= rel
->r_offset
;
7921 if (rel
+ 1 == relend
7922 || rel
[1].r_offset
!= offset
+ 8)
7924 /* If someone messes with .opd alignment then after a
7925 "ld -r" we might have padding in the middle of .opd.
7926 Also, there's nothing to prevent someone putting
7927 something silly in .opd with the assembler. No .opd
7928 optimization for them! */
7931 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7936 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7937 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7940 /* xgettext:c-format */
7941 (_("%B: unexpected reloc type %u in .opd section"),
7947 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7948 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7952 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7954 const char *sym_name
;
7956 sym_name
= h
->root
.root
.string
;
7958 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7962 /* xgettext:c-format */
7963 (_("%B: undefined sym `%s' in .opd section"),
7969 /* opd entries are always for functions defined in the
7970 current input bfd. If the symbol isn't defined in the
7971 input bfd, then we won't be using the function in this
7972 bfd; It must be defined in a linkonce section in another
7973 bfd, or is weak. It's also possible that we are
7974 discarding the function due to a linker script /DISCARD/,
7975 which we test for via the output_section. */
7976 if (sym_sec
->owner
!= ibfd
7977 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7981 if (rel
+ 1 == relend
7982 || (rel
+ 2 < relend
7983 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7988 if (sec
->size
== offset
+ 24)
7993 if (sec
->size
== offset
+ 16)
8000 else if (rel
+ 1 < relend
8001 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8002 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8004 if (rel
[0].r_offset
== offset
+ 16)
8006 else if (rel
[0].r_offset
!= offset
+ 24)
8013 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8015 if (!broken
&& (need_edit
|| add_aux_fields
))
8017 Elf_Internal_Rela
*write_rel
;
8018 Elf_Internal_Shdr
*rel_hdr
;
8019 bfd_byte
*rptr
, *wptr
;
8020 bfd_byte
*new_contents
;
8023 new_contents
= NULL
;
8024 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8025 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8026 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8027 if (opd
->adjust
== NULL
)
8029 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8031 /* This seems a waste of time as input .opd sections are all
8032 zeros as generated by gcc, but I suppose there's no reason
8033 this will always be so. We might start putting something in
8034 the third word of .opd entries. */
8035 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8038 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8043 if (local_syms
!= NULL
8044 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8046 if (elf_section_data (sec
)->relocs
!= relstart
)
8050 sec
->contents
= loc
;
8051 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8054 elf_section_data (sec
)->relocs
= relstart
;
8056 new_contents
= sec
->contents
;
8059 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8060 if (new_contents
== NULL
)
8064 wptr
= new_contents
;
8065 rptr
= sec
->contents
;
8066 write_rel
= relstart
;
8067 for (rel
= relstart
; rel
< relend
; )
8069 unsigned long r_symndx
;
8071 struct elf_link_hash_entry
*h
;
8072 struct ppc_link_hash_entry
*fdh
= NULL
;
8073 Elf_Internal_Sym
*sym
;
8075 Elf_Internal_Rela
*next_rel
;
8078 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8079 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8084 if (next_rel
+ 1 == relend
8085 || (next_rel
+ 2 < relend
8086 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8089 /* See if the .opd entry is full 24 byte or
8090 16 byte (with fd_aux entry overlapped with next
8093 if (next_rel
== relend
)
8095 if (sec
->size
== rel
->r_offset
+ 16)
8098 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8102 && h
->root
.root
.string
[0] == '.')
8104 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8107 fdh
= ppc_follow_link (fdh
);
8108 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8109 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8114 skip
= (sym_sec
->owner
!= ibfd
8115 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8118 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8120 /* Arrange for the function descriptor sym
8122 fdh
->elf
.root
.u
.def
.value
= 0;
8123 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8125 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8127 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8132 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8136 if (++rel
== next_rel
)
8139 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8140 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8147 /* We'll be keeping this opd entry. */
8152 /* Redefine the function descriptor symbol to
8153 this location in the opd section. It is
8154 necessary to update the value here rather
8155 than using an array of adjustments as we do
8156 for local symbols, because various places
8157 in the generic ELF code use the value
8158 stored in u.def.value. */
8159 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8160 fdh
->adjust_done
= 1;
8163 /* Local syms are a bit tricky. We could
8164 tweak them as they can be cached, but
8165 we'd need to look through the local syms
8166 for the function descriptor sym which we
8167 don't have at the moment. So keep an
8168 array of adjustments. */
8169 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8170 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8173 memcpy (wptr
, rptr
, opd_ent_size
);
8174 wptr
+= opd_ent_size
;
8175 if (add_aux_fields
&& opd_ent_size
== 16)
8177 memset (wptr
, '\0', 8);
8181 /* We need to adjust any reloc offsets to point to the
8183 for ( ; rel
!= next_rel
; ++rel
)
8185 rel
->r_offset
+= adjust
;
8186 if (write_rel
!= rel
)
8187 memcpy (write_rel
, rel
, sizeof (*rel
));
8192 rptr
+= opd_ent_size
;
8195 sec
->size
= wptr
- new_contents
;
8196 sec
->reloc_count
= write_rel
- relstart
;
8199 free (sec
->contents
);
8200 sec
->contents
= new_contents
;
8203 /* Fudge the header size too, as this is used later in
8204 elf_bfd_final_link if we are emitting relocs. */
8205 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8206 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8209 else if (elf_section_data (sec
)->relocs
!= relstart
)
8212 if (local_syms
!= NULL
8213 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8215 if (!info
->keep_memory
)
8218 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8223 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8225 /* If we are doing a final link and the last .opd entry is just 16 byte
8226 long, add a 8 byte padding after it. */
8227 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8231 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8233 BFD_ASSERT (need_pad
->size
> 0);
8235 p
= bfd_malloc (need_pad
->size
+ 8);
8239 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8240 p
, 0, need_pad
->size
))
8243 need_pad
->contents
= p
;
8244 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8248 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8252 need_pad
->contents
= p
;
8255 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8256 need_pad
->size
+= 8;
8262 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8265 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8267 struct ppc_link_hash_table
*htab
;
8269 htab
= ppc_hash_table (info
);
8273 if (abiversion (info
->output_bfd
) == 1)
8276 if (htab
->params
->no_multi_toc
)
8277 htab
->do_multi_toc
= 0;
8278 else if (!htab
->do_multi_toc
)
8279 htab
->params
->no_multi_toc
= 1;
8281 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8282 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8283 FALSE
, FALSE
, TRUE
));
8284 /* Move dynamic linking info to the function descriptor sym. */
8285 if (htab
->tls_get_addr
!= NULL
)
8286 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8287 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8288 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8289 FALSE
, FALSE
, TRUE
));
8290 if (htab
->params
->tls_get_addr_opt
)
8292 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8294 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8295 FALSE
, FALSE
, TRUE
);
8297 func_desc_adjust (opt
, info
);
8298 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8299 FALSE
, FALSE
, TRUE
);
8301 && (opt_fd
->root
.type
== bfd_link_hash_defined
8302 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8304 /* If glibc supports an optimized __tls_get_addr call stub,
8305 signalled by the presence of __tls_get_addr_opt, and we'll
8306 be calling __tls_get_addr via a plt call stub, then
8307 make __tls_get_addr point to __tls_get_addr_opt. */
8308 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8309 if (htab
->elf
.dynamic_sections_created
8311 && (tga_fd
->type
== STT_FUNC
8312 || tga_fd
->needs_plt
)
8313 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8314 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8315 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8317 struct plt_entry
*ent
;
8319 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8320 if (ent
->plt
.refcount
> 0)
8324 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8325 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8326 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8327 opt_fd
->forced_local
= 0;
8328 if (opt_fd
->dynindx
!= -1)
8330 /* Use __tls_get_addr_opt in dynamic relocations. */
8331 opt_fd
->dynindx
= -1;
8332 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8333 opt_fd
->dynstr_index
);
8334 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8337 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8338 tga
= &htab
->tls_get_addr
->elf
;
8339 if (opt
!= NULL
&& tga
!= NULL
)
8341 tga
->root
.type
= bfd_link_hash_indirect
;
8342 tga
->root
.u
.i
.link
= &opt
->root
;
8343 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8344 opt
->forced_local
= 0;
8345 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8347 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8349 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8350 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8351 if (htab
->tls_get_addr
!= NULL
)
8353 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8354 htab
->tls_get_addr
->is_func
= 1;
8359 else if (htab
->params
->tls_get_addr_opt
< 0)
8360 htab
->params
->tls_get_addr_opt
= 0;
8362 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8365 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8369 branch_reloc_hash_match (const bfd
*ibfd
,
8370 const Elf_Internal_Rela
*rel
,
8371 const struct ppc_link_hash_entry
*hash1
,
8372 const struct ppc_link_hash_entry
*hash2
)
8374 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8375 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8376 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8378 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8380 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8381 struct elf_link_hash_entry
*h
;
8383 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8384 h
= elf_follow_link (h
);
8385 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8391 /* Run through all the TLS relocs looking for optimization
8392 opportunities. The linker has been hacked (see ppc64elf.em) to do
8393 a preliminary section layout so that we know the TLS segment
8394 offsets. We can't optimize earlier because some optimizations need
8395 to know the tp offset, and we need to optimize before allocating
8396 dynamic relocations. */
8399 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8403 struct ppc_link_hash_table
*htab
;
8404 unsigned char *toc_ref
;
8407 if (!bfd_link_executable (info
))
8410 htab
= ppc_hash_table (info
);
8414 /* Make two passes over the relocs. On the first pass, mark toc
8415 entries involved with tls relocs, and check that tls relocs
8416 involved in setting up a tls_get_addr call are indeed followed by
8417 such a call. If they are not, we can't do any tls optimization.
8418 On the second pass twiddle tls_mask flags to notify
8419 relocate_section that optimization can be done, and adjust got
8420 and plt refcounts. */
8422 for (pass
= 0; pass
< 2; ++pass
)
8423 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8425 Elf_Internal_Sym
*locsyms
= NULL
;
8426 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8428 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8429 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8431 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8432 bfd_boolean found_tls_get_addr_arg
= 0;
8434 /* Read the relocations. */
8435 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8437 if (relstart
== NULL
)
8443 relend
= relstart
+ sec
->reloc_count
;
8444 for (rel
= relstart
; rel
< relend
; rel
++)
8446 enum elf_ppc64_reloc_type r_type
;
8447 unsigned long r_symndx
;
8448 struct elf_link_hash_entry
*h
;
8449 Elf_Internal_Sym
*sym
;
8451 unsigned char *tls_mask
;
8452 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8454 bfd_boolean ok_tprel
, is_local
;
8455 long toc_ref_index
= 0;
8456 int expecting_tls_get_addr
= 0;
8457 bfd_boolean ret
= FALSE
;
8459 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8460 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8464 if (elf_section_data (sec
)->relocs
!= relstart
)
8466 if (toc_ref
!= NULL
)
8469 && (elf_symtab_hdr (ibfd
).contents
8470 != (unsigned char *) locsyms
))
8477 if (h
->root
.type
== bfd_link_hash_defined
8478 || h
->root
.type
== bfd_link_hash_defweak
)
8479 value
= h
->root
.u
.def
.value
;
8480 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8484 found_tls_get_addr_arg
= 0;
8489 /* Symbols referenced by TLS relocs must be of type
8490 STT_TLS. So no need for .opd local sym adjust. */
8491 value
= sym
->st_value
;
8500 && h
->root
.type
== bfd_link_hash_undefweak
)
8502 else if (sym_sec
!= NULL
8503 && sym_sec
->output_section
!= NULL
)
8505 value
+= sym_sec
->output_offset
;
8506 value
+= sym_sec
->output_section
->vma
;
8507 value
-= htab
->elf
.tls_sec
->vma
;
8508 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8509 < (bfd_vma
) 1 << 32);
8513 r_type
= ELF64_R_TYPE (rel
->r_info
);
8514 /* If this section has old-style __tls_get_addr calls
8515 without marker relocs, then check that each
8516 __tls_get_addr call reloc is preceded by a reloc
8517 that conceivably belongs to the __tls_get_addr arg
8518 setup insn. If we don't find matching arg setup
8519 relocs, don't do any tls optimization. */
8521 && sec
->has_tls_get_addr_call
8523 && (h
== &htab
->tls_get_addr
->elf
8524 || h
== &htab
->tls_get_addr_fd
->elf
)
8525 && !found_tls_get_addr_arg
8526 && is_branch_reloc (r_type
))
8528 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8529 "TLS optimization disabled\n"),
8530 ibfd
, sec
, rel
->r_offset
);
8535 found_tls_get_addr_arg
= 0;
8538 case R_PPC64_GOT_TLSLD16
:
8539 case R_PPC64_GOT_TLSLD16_LO
:
8540 expecting_tls_get_addr
= 1;
8541 found_tls_get_addr_arg
= 1;
8544 case R_PPC64_GOT_TLSLD16_HI
:
8545 case R_PPC64_GOT_TLSLD16_HA
:
8546 /* These relocs should never be against a symbol
8547 defined in a shared lib. Leave them alone if
8548 that turns out to be the case. */
8555 tls_type
= TLS_TLS
| TLS_LD
;
8558 case R_PPC64_GOT_TLSGD16
:
8559 case R_PPC64_GOT_TLSGD16_LO
:
8560 expecting_tls_get_addr
= 1;
8561 found_tls_get_addr_arg
= 1;
8564 case R_PPC64_GOT_TLSGD16_HI
:
8565 case R_PPC64_GOT_TLSGD16_HA
:
8571 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8573 tls_type
= TLS_TLS
| TLS_GD
;
8576 case R_PPC64_GOT_TPREL16_DS
:
8577 case R_PPC64_GOT_TPREL16_LO_DS
:
8578 case R_PPC64_GOT_TPREL16_HI
:
8579 case R_PPC64_GOT_TPREL16_HA
:
8584 tls_clear
= TLS_TPREL
;
8585 tls_type
= TLS_TLS
| TLS_TPREL
;
8592 found_tls_get_addr_arg
= 1;
8597 case R_PPC64_TOC16_LO
:
8598 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8601 /* Mark this toc entry as referenced by a TLS
8602 code sequence. We can do that now in the
8603 case of R_PPC64_TLS, and after checking for
8604 tls_get_addr for the TOC16 relocs. */
8605 if (toc_ref
== NULL
)
8606 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8607 if (toc_ref
== NULL
)
8611 value
= h
->root
.u
.def
.value
;
8613 value
= sym
->st_value
;
8614 value
+= rel
->r_addend
;
8617 BFD_ASSERT (value
< toc
->size
8618 && toc
->output_offset
% 8 == 0);
8619 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8620 if (r_type
== R_PPC64_TLS
8621 || r_type
== R_PPC64_TLSGD
8622 || r_type
== R_PPC64_TLSLD
)
8624 toc_ref
[toc_ref_index
] = 1;
8628 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8633 expecting_tls_get_addr
= 2;
8636 case R_PPC64_TPREL64
:
8640 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8645 tls_set
= TLS_EXPLICIT
;
8646 tls_clear
= TLS_TPREL
;
8651 case R_PPC64_DTPMOD64
:
8655 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8657 if (rel
+ 1 < relend
8659 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8660 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8664 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8667 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8676 tls_set
= TLS_EXPLICIT
;
8687 if (!expecting_tls_get_addr
8688 || !sec
->has_tls_get_addr_call
)
8691 if (rel
+ 1 < relend
8692 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8694 htab
->tls_get_addr_fd
))
8696 if (expecting_tls_get_addr
== 2)
8698 /* Check for toc tls entries. */
8699 unsigned char *toc_tls
;
8702 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8707 if (toc_tls
!= NULL
)
8709 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8710 found_tls_get_addr_arg
= 1;
8712 toc_ref
[toc_ref_index
] = 1;
8718 if (expecting_tls_get_addr
!= 1)
8721 /* Uh oh, we didn't find the expected call. We
8722 could just mark this symbol to exclude it
8723 from tls optimization but it's safer to skip
8724 the entire optimization. */
8725 /* xgettext:c-format */
8726 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8727 "TLS optimization disabled\n"),
8728 ibfd
, sec
, rel
->r_offset
);
8733 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8735 struct plt_entry
*ent
;
8736 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8739 if (ent
->addend
== 0)
8741 if (ent
->plt
.refcount
> 0)
8743 ent
->plt
.refcount
-= 1;
8744 expecting_tls_get_addr
= 0;
8750 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8752 struct plt_entry
*ent
;
8753 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8756 if (ent
->addend
== 0)
8758 if (ent
->plt
.refcount
> 0)
8759 ent
->plt
.refcount
-= 1;
8767 if ((tls_set
& TLS_EXPLICIT
) == 0)
8769 struct got_entry
*ent
;
8771 /* Adjust got entry for this reloc. */
8775 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8777 for (; ent
!= NULL
; ent
= ent
->next
)
8778 if (ent
->addend
== rel
->r_addend
8779 && ent
->owner
== ibfd
8780 && ent
->tls_type
== tls_type
)
8787 /* We managed to get rid of a got entry. */
8788 if (ent
->got
.refcount
> 0)
8789 ent
->got
.refcount
-= 1;
8794 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8795 we'll lose one or two dyn relocs. */
8796 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8800 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8802 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8808 *tls_mask
|= tls_set
;
8809 *tls_mask
&= ~tls_clear
;
8812 if (elf_section_data (sec
)->relocs
!= relstart
)
8817 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8819 if (!info
->keep_memory
)
8822 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8826 if (toc_ref
!= NULL
)
8831 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8832 the values of any global symbols in a toc section that has been
8833 edited. Globals in toc sections should be a rarity, so this function
8834 sets a flag if any are found in toc sections other than the one just
8835 edited, so that futher hash table traversals can be avoided. */
8837 struct adjust_toc_info
8840 unsigned long *skip
;
8841 bfd_boolean global_toc_syms
;
8844 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8847 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8849 struct ppc_link_hash_entry
*eh
;
8850 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8853 if (h
->root
.type
!= bfd_link_hash_defined
8854 && h
->root
.type
!= bfd_link_hash_defweak
)
8857 eh
= (struct ppc_link_hash_entry
*) h
;
8858 if (eh
->adjust_done
)
8861 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8863 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8864 i
= toc_inf
->toc
->rawsize
>> 3;
8866 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8868 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8871 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8874 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8875 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8878 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8879 eh
->adjust_done
= 1;
8881 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8882 toc_inf
->global_toc_syms
= TRUE
;
8887 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8888 on a _LO variety toc/got reloc. */
8891 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8893 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8894 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8895 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8896 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8897 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8898 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8899 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8900 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8901 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8902 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8903 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8904 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8905 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8906 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8907 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8908 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8909 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8910 /* Exclude lfqu by testing reloc. If relocs are ever
8911 defined for the reduced D field in psq_lu then those
8912 will need testing too. */
8913 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8914 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8916 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8917 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8918 /* Exclude stfqu. psq_stu as above for psq_lu. */
8919 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8920 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8921 && (insn
& 1) == 0));
8924 /* Examine all relocs referencing .toc sections in order to remove
8925 unused .toc entries. */
8928 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8931 struct adjust_toc_info toc_inf
;
8932 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8934 htab
->do_toc_opt
= 1;
8935 toc_inf
.global_toc_syms
= TRUE
;
8936 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8938 asection
*toc
, *sec
;
8939 Elf_Internal_Shdr
*symtab_hdr
;
8940 Elf_Internal_Sym
*local_syms
;
8941 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8942 unsigned long *skip
, *drop
;
8943 unsigned char *used
;
8944 unsigned char *keep
, last
, some_unused
;
8946 if (!is_ppc64_elf (ibfd
))
8949 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8952 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8953 || discarded_section (toc
))
8958 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8960 /* Look at sections dropped from the final link. */
8963 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8965 if (sec
->reloc_count
== 0
8966 || !discarded_section (sec
)
8967 || get_opd_info (sec
)
8968 || (sec
->flags
& SEC_ALLOC
) == 0
8969 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8972 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8973 if (relstart
== NULL
)
8976 /* Run through the relocs to see which toc entries might be
8978 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8980 enum elf_ppc64_reloc_type r_type
;
8981 unsigned long r_symndx
;
8983 struct elf_link_hash_entry
*h
;
8984 Elf_Internal_Sym
*sym
;
8987 r_type
= ELF64_R_TYPE (rel
->r_info
);
8994 case R_PPC64_TOC16_LO
:
8995 case R_PPC64_TOC16_HI
:
8996 case R_PPC64_TOC16_HA
:
8997 case R_PPC64_TOC16_DS
:
8998 case R_PPC64_TOC16_LO_DS
:
9002 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9003 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9011 val
= h
->root
.u
.def
.value
;
9013 val
= sym
->st_value
;
9014 val
+= rel
->r_addend
;
9016 if (val
>= toc
->size
)
9019 /* Anything in the toc ought to be aligned to 8 bytes.
9020 If not, don't mark as unused. */
9026 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9031 skip
[val
>> 3] = ref_from_discarded
;
9034 if (elf_section_data (sec
)->relocs
!= relstart
)
9038 /* For largetoc loads of address constants, we can convert
9039 . addis rx,2,addr@got@ha
9040 . ld ry,addr@got@l(rx)
9042 . addis rx,2,addr@toc@ha
9043 . addi ry,rx,addr@toc@l
9044 when addr is within 2G of the toc pointer. This then means
9045 that the word storing "addr" in the toc is no longer needed. */
9047 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9048 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9049 && toc
->reloc_count
!= 0)
9051 /* Read toc relocs. */
9052 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9054 if (toc_relocs
== NULL
)
9057 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9059 enum elf_ppc64_reloc_type r_type
;
9060 unsigned long r_symndx
;
9062 struct elf_link_hash_entry
*h
;
9063 Elf_Internal_Sym
*sym
;
9066 r_type
= ELF64_R_TYPE (rel
->r_info
);
9067 if (r_type
!= R_PPC64_ADDR64
)
9070 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9071 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9076 || sym_sec
->output_section
== NULL
9077 || discarded_section (sym_sec
))
9080 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9085 if (h
->type
== STT_GNU_IFUNC
)
9087 val
= h
->root
.u
.def
.value
;
9091 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9093 val
= sym
->st_value
;
9095 val
+= rel
->r_addend
;
9096 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9098 /* We don't yet know the exact toc pointer value, but we
9099 know it will be somewhere in the toc section. Don't
9100 optimize if the difference from any possible toc
9101 pointer is outside [ff..f80008000, 7fff7fff]. */
9102 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9103 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9106 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9107 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9112 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9117 skip
[rel
->r_offset
>> 3]
9118 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9125 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9129 if (local_syms
!= NULL
9130 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9134 && elf_section_data (sec
)->relocs
!= relstart
)
9136 if (toc_relocs
!= NULL
9137 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9144 /* Now check all kept sections that might reference the toc.
9145 Check the toc itself last. */
9146 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9149 sec
= (sec
== toc
? NULL
9150 : sec
->next
== NULL
? toc
9151 : sec
->next
== toc
&& toc
->next
? toc
->next
9156 if (sec
->reloc_count
== 0
9157 || discarded_section (sec
)
9158 || get_opd_info (sec
)
9159 || (sec
->flags
& SEC_ALLOC
) == 0
9160 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9163 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9165 if (relstart
== NULL
)
9171 /* Mark toc entries referenced as used. */
9175 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9177 enum elf_ppc64_reloc_type r_type
;
9178 unsigned long r_symndx
;
9180 struct elf_link_hash_entry
*h
;
9181 Elf_Internal_Sym
*sym
;
9183 enum {no_check
, check_lo
, check_ha
} insn_check
;
9185 r_type
= ELF64_R_TYPE (rel
->r_info
);
9189 insn_check
= no_check
;
9192 case R_PPC64_GOT_TLSLD16_HA
:
9193 case R_PPC64_GOT_TLSGD16_HA
:
9194 case R_PPC64_GOT_TPREL16_HA
:
9195 case R_PPC64_GOT_DTPREL16_HA
:
9196 case R_PPC64_GOT16_HA
:
9197 case R_PPC64_TOC16_HA
:
9198 insn_check
= check_ha
;
9201 case R_PPC64_GOT_TLSLD16_LO
:
9202 case R_PPC64_GOT_TLSGD16_LO
:
9203 case R_PPC64_GOT_TPREL16_LO_DS
:
9204 case R_PPC64_GOT_DTPREL16_LO_DS
:
9205 case R_PPC64_GOT16_LO
:
9206 case R_PPC64_GOT16_LO_DS
:
9207 case R_PPC64_TOC16_LO
:
9208 case R_PPC64_TOC16_LO_DS
:
9209 insn_check
= check_lo
;
9213 if (insn_check
!= no_check
)
9215 bfd_vma off
= rel
->r_offset
& ~3;
9216 unsigned char buf
[4];
9219 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9224 insn
= bfd_get_32 (ibfd
, buf
);
9225 if (insn_check
== check_lo
9226 ? !ok_lo_toc_insn (insn
, r_type
)
9227 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9228 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9232 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9233 sprintf (str
, "%#08x", insn
);
9234 info
->callbacks
->einfo
9235 /* xgettext:c-format */
9236 (_("%P: %H: toc optimization is not supported for"
9237 " %s instruction.\n"),
9238 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9245 case R_PPC64_TOC16_LO
:
9246 case R_PPC64_TOC16_HI
:
9247 case R_PPC64_TOC16_HA
:
9248 case R_PPC64_TOC16_DS
:
9249 case R_PPC64_TOC16_LO_DS
:
9250 /* In case we're taking addresses of toc entries. */
9251 case R_PPC64_ADDR64
:
9258 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9259 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9270 val
= h
->root
.u
.def
.value
;
9272 val
= sym
->st_value
;
9273 val
+= rel
->r_addend
;
9275 if (val
>= toc
->size
)
9278 if ((skip
[val
>> 3] & can_optimize
) != 0)
9285 case R_PPC64_TOC16_HA
:
9288 case R_PPC64_TOC16_LO_DS
:
9289 off
= rel
->r_offset
;
9290 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9291 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9297 if ((opc
& (0x3f << 2)) == (58u << 2))
9302 /* Wrong sort of reloc, or not a ld. We may
9303 as well clear ref_from_discarded too. */
9310 /* For the toc section, we only mark as used if this
9311 entry itself isn't unused. */
9312 else if ((used
[rel
->r_offset
>> 3]
9313 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9316 /* Do all the relocs again, to catch reference
9325 if (elf_section_data (sec
)->relocs
!= relstart
)
9329 /* Merge the used and skip arrays. Assume that TOC
9330 doublewords not appearing as either used or unused belong
9331 to to an entry more than one doubleword in size. */
9332 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9333 drop
< skip
+ (toc
->size
+ 7) / 8;
9338 *drop
&= ~ref_from_discarded
;
9339 if ((*drop
& can_optimize
) != 0)
9343 else if ((*drop
& ref_from_discarded
) != 0)
9346 last
= ref_from_discarded
;
9356 bfd_byte
*contents
, *src
;
9358 Elf_Internal_Sym
*sym
;
9359 bfd_boolean local_toc_syms
= FALSE
;
9361 /* Shuffle the toc contents, and at the same time convert the
9362 skip array from booleans into offsets. */
9363 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9366 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9368 for (src
= contents
, off
= 0, drop
= skip
;
9369 src
< contents
+ toc
->size
;
9372 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9377 memcpy (src
- off
, src
, 8);
9381 toc
->rawsize
= toc
->size
;
9382 toc
->size
= src
- contents
- off
;
9384 /* Adjust addends for relocs against the toc section sym,
9385 and optimize any accesses we can. */
9386 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9388 if (sec
->reloc_count
== 0
9389 || discarded_section (sec
))
9392 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9394 if (relstart
== NULL
)
9397 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9399 enum elf_ppc64_reloc_type r_type
;
9400 unsigned long r_symndx
;
9402 struct elf_link_hash_entry
*h
;
9405 r_type
= ELF64_R_TYPE (rel
->r_info
);
9412 case R_PPC64_TOC16_LO
:
9413 case R_PPC64_TOC16_HI
:
9414 case R_PPC64_TOC16_HA
:
9415 case R_PPC64_TOC16_DS
:
9416 case R_PPC64_TOC16_LO_DS
:
9417 case R_PPC64_ADDR64
:
9421 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9422 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9430 val
= h
->root
.u
.def
.value
;
9433 val
= sym
->st_value
;
9435 local_toc_syms
= TRUE
;
9438 val
+= rel
->r_addend
;
9440 if (val
> toc
->rawsize
)
9442 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9444 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9446 Elf_Internal_Rela
*tocrel
9447 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9448 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9452 case R_PPC64_TOC16_HA
:
9453 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9456 case R_PPC64_TOC16_LO_DS
:
9457 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9461 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9463 info
->callbacks
->einfo
9464 /* xgettext:c-format */
9465 (_("%P: %H: %s references "
9466 "optimized away TOC entry\n"),
9467 ibfd
, sec
, rel
->r_offset
,
9468 ppc64_elf_howto_table
[r_type
]->name
);
9469 bfd_set_error (bfd_error_bad_value
);
9472 rel
->r_addend
= tocrel
->r_addend
;
9473 elf_section_data (sec
)->relocs
= relstart
;
9477 if (h
!= NULL
|| sym
->st_value
!= 0)
9480 rel
->r_addend
-= skip
[val
>> 3];
9481 elf_section_data (sec
)->relocs
= relstart
;
9484 if (elf_section_data (sec
)->relocs
!= relstart
)
9488 /* We shouldn't have local or global symbols defined in the TOC,
9489 but handle them anyway. */
9490 if (local_syms
!= NULL
)
9491 for (sym
= local_syms
;
9492 sym
< local_syms
+ symtab_hdr
->sh_info
;
9494 if (sym
->st_value
!= 0
9495 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9499 if (sym
->st_value
> toc
->rawsize
)
9500 i
= toc
->rawsize
>> 3;
9502 i
= sym
->st_value
>> 3;
9504 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9508 (_("%s defined on removed toc entry"),
9509 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9512 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9513 sym
->st_value
= (bfd_vma
) i
<< 3;
9516 sym
->st_value
-= skip
[i
];
9517 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9520 /* Adjust any global syms defined in this toc input section. */
9521 if (toc_inf
.global_toc_syms
)
9524 toc_inf
.skip
= skip
;
9525 toc_inf
.global_toc_syms
= FALSE
;
9526 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9530 if (toc
->reloc_count
!= 0)
9532 Elf_Internal_Shdr
*rel_hdr
;
9533 Elf_Internal_Rela
*wrel
;
9536 /* Remove unused toc relocs, and adjust those we keep. */
9537 if (toc_relocs
== NULL
)
9538 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9540 if (toc_relocs
== NULL
)
9544 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9545 if ((skip
[rel
->r_offset
>> 3]
9546 & (ref_from_discarded
| can_optimize
)) == 0)
9548 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9549 wrel
->r_info
= rel
->r_info
;
9550 wrel
->r_addend
= rel
->r_addend
;
9553 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9554 &local_syms
, NULL
, NULL
))
9557 elf_section_data (toc
)->relocs
= toc_relocs
;
9558 toc
->reloc_count
= wrel
- toc_relocs
;
9559 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9560 sz
= rel_hdr
->sh_entsize
;
9561 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9564 else if (toc_relocs
!= NULL
9565 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9568 if (local_syms
!= NULL
9569 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9571 if (!info
->keep_memory
)
9574 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9582 /* Return true iff input section I references the TOC using
9583 instructions limited to +/-32k offsets. */
9586 ppc64_elf_has_small_toc_reloc (asection
*i
)
9588 return (is_ppc64_elf (i
->owner
)
9589 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9592 /* Allocate space for one GOT entry. */
9595 allocate_got (struct elf_link_hash_entry
*h
,
9596 struct bfd_link_info
*info
,
9597 struct got_entry
*gent
)
9599 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9601 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9602 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9604 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9605 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9606 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9608 gent
->got
.offset
= got
->size
;
9609 got
->size
+= entsize
;
9611 dyn
= htab
->elf
.dynamic_sections_created
;
9612 if (h
->type
== STT_GNU_IFUNC
)
9614 htab
->elf
.irelplt
->size
+= rentsize
;
9615 htab
->got_reli_size
+= rentsize
;
9617 else if ((bfd_link_pic (info
)
9618 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9619 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9620 || h
->root
.type
!= bfd_link_hash_undefweak
))
9622 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9623 relgot
->size
+= rentsize
;
9627 /* This function merges got entries in the same toc group. */
9630 merge_got_entries (struct got_entry
**pent
)
9632 struct got_entry
*ent
, *ent2
;
9634 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9635 if (!ent
->is_indirect
)
9636 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9637 if (!ent2
->is_indirect
9638 && ent2
->addend
== ent
->addend
9639 && ent2
->tls_type
== ent
->tls_type
9640 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9642 ent2
->is_indirect
= TRUE
;
9643 ent2
->got
.ent
= ent
;
9647 /* Allocate space in .plt, .got and associated reloc sections for
9651 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9653 struct bfd_link_info
*info
;
9654 struct ppc_link_hash_table
*htab
;
9656 struct ppc_link_hash_entry
*eh
;
9657 struct got_entry
**pgent
, *gent
;
9659 if (h
->root
.type
== bfd_link_hash_indirect
)
9662 info
= (struct bfd_link_info
*) inf
;
9663 htab
= ppc_hash_table (info
);
9667 eh
= (struct ppc_link_hash_entry
*) h
;
9668 /* Run through the TLS GD got entries first if we're changing them
9670 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9671 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9672 if (gent
->got
.refcount
> 0
9673 && (gent
->tls_type
& TLS_GD
) != 0)
9675 /* This was a GD entry that has been converted to TPREL. If
9676 there happens to be a TPREL entry we can use that one. */
9677 struct got_entry
*ent
;
9678 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9679 if (ent
->got
.refcount
> 0
9680 && (ent
->tls_type
& TLS_TPREL
) != 0
9681 && ent
->addend
== gent
->addend
9682 && ent
->owner
== gent
->owner
)
9684 gent
->got
.refcount
= 0;
9688 /* If not, then we'll be using our own TPREL entry. */
9689 if (gent
->got
.refcount
!= 0)
9690 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9693 /* Remove any list entry that won't generate a word in the GOT before
9694 we call merge_got_entries. Otherwise we risk merging to empty
9696 pgent
= &h
->got
.glist
;
9697 while ((gent
= *pgent
) != NULL
)
9698 if (gent
->got
.refcount
> 0)
9700 if ((gent
->tls_type
& TLS_LD
) != 0
9703 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9704 *pgent
= gent
->next
;
9707 pgent
= &gent
->next
;
9710 *pgent
= gent
->next
;
9712 if (!htab
->do_multi_toc
)
9713 merge_got_entries (&h
->got
.glist
);
9715 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9716 if (!gent
->is_indirect
)
9718 /* Make sure this symbol is output as a dynamic symbol.
9719 Undefined weak syms won't yet be marked as dynamic,
9720 nor will all TLS symbols. */
9721 if (h
->dynindx
== -1
9723 && h
->type
!= STT_GNU_IFUNC
9724 && htab
->elf
.dynamic_sections_created
)
9726 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9730 if (!is_ppc64_elf (gent
->owner
))
9733 allocate_got (h
, info
, gent
);
9736 if (!htab
->elf
.dynamic_sections_created
9737 && h
->type
!= STT_GNU_IFUNC
)
9738 eh
->dyn_relocs
= NULL
;
9740 if (eh
->dyn_relocs
!= NULL
)
9742 struct elf_dyn_relocs
*p
, **pp
;
9744 /* In the shared -Bsymbolic case, discard space allocated for
9745 dynamic pc-relative relocs against symbols which turn out to
9746 be defined in regular objects. For the normal shared case,
9747 discard space for relocs that have become local due to symbol
9748 visibility changes. */
9750 if (bfd_link_pic (info
))
9752 /* Relocs that use pc_count are those that appear on a call
9753 insn, or certain REL relocs (see must_be_dyn_reloc) that
9754 can be generated via assembly. We want calls to
9755 protected symbols to resolve directly to the function
9756 rather than going via the plt. If people want function
9757 pointer comparisons to work as expected then they should
9758 avoid writing weird assembly. */
9759 if (SYMBOL_CALLS_LOCAL (info
, h
))
9761 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9763 p
->count
-= p
->pc_count
;
9772 /* Also discard relocs on undefined weak syms with
9773 non-default visibility. */
9774 if (eh
->dyn_relocs
!= NULL
9775 && h
->root
.type
== bfd_link_hash_undefweak
)
9777 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9778 eh
->dyn_relocs
= NULL
;
9780 /* Make sure this symbol is output as a dynamic symbol.
9781 Undefined weak syms won't yet be marked as dynamic. */
9782 else if (h
->dynindx
== -1
9783 && !h
->forced_local
)
9785 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9790 else if (h
->type
== STT_GNU_IFUNC
)
9792 /* A plt entry is always created when making direct calls to
9793 an ifunc, even when building a static executable, but
9794 that doesn't cover all cases. We may have only an ifunc
9795 initialised function pointer for a given ifunc symbol.
9797 For ELFv2, dynamic relocations are not required when
9798 generating a global entry PLT stub. */
9799 if (abiversion (info
->output_bfd
) >= 2)
9801 if (global_entry_stub (h
))
9802 eh
->dyn_relocs
= NULL
;
9805 /* For ELFv1 we have function descriptors. Descriptors need
9806 to be treated like PLT entries and thus have dynamic
9807 relocations. One exception is when the function
9808 descriptor is copied into .dynbss (which should only
9809 happen with ancient versions of gcc). */
9810 else if (h
->needs_copy
)
9811 eh
->dyn_relocs
= NULL
;
9813 else if (ELIMINATE_COPY_RELOCS
)
9815 /* For the non-pic case, discard space for relocs against
9816 symbols which turn out to need copy relocs or are not
9819 /* First make sure this symbol is output as a dynamic symbol.
9820 Undefined weak syms won't yet be marked as dynamic. */
9821 if (h
->root
.type
== bfd_link_hash_undefweak
9826 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
9831 || h
->dynindx
== -1)
9832 eh
->dyn_relocs
= NULL
;
9835 /* Finally, allocate space. */
9836 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9838 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9839 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9840 sreloc
= htab
->elf
.irelplt
;
9841 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9845 if ((htab
->elf
.dynamic_sections_created
9847 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
9848 || h
->type
== STT_GNU_IFUNC
)
9850 struct plt_entry
*pent
;
9851 bfd_boolean doneone
= FALSE
;
9852 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9853 if (pent
->plt
.refcount
> 0)
9855 if (!htab
->elf
.dynamic_sections_created
9856 || h
->dynindx
== -1)
9859 pent
->plt
.offset
= s
->size
;
9860 s
->size
+= PLT_ENTRY_SIZE (htab
);
9861 s
= htab
->elf
.irelplt
;
9865 /* If this is the first .plt entry, make room for the special
9869 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9871 pent
->plt
.offset
= s
->size
;
9873 /* Make room for this entry. */
9874 s
->size
+= PLT_ENTRY_SIZE (htab
);
9876 /* Make room for the .glink code. */
9879 s
->size
+= GLINK_CALL_STUB_SIZE
;
9882 /* We need bigger stubs past index 32767. */
9883 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9890 /* We also need to make an entry in the .rela.plt section. */
9891 s
= htab
->elf
.srelplt
;
9893 s
->size
+= sizeof (Elf64_External_Rela
);
9897 pent
->plt
.offset
= (bfd_vma
) -1;
9900 h
->plt
.plist
= NULL
;
9906 h
->plt
.plist
= NULL
;
9913 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9914 to set up space for global entry stubs. These are put in glink,
9915 after the branch table. */
9918 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9920 struct bfd_link_info
*info
;
9921 struct ppc_link_hash_table
*htab
;
9922 struct plt_entry
*pent
;
9925 if (h
->root
.type
== bfd_link_hash_indirect
)
9928 if (!h
->pointer_equality_needed
)
9935 htab
= ppc_hash_table (info
);
9940 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9941 if (pent
->plt
.offset
!= (bfd_vma
) -1
9942 && pent
->addend
== 0)
9944 /* For ELFv2, if this symbol is not defined in a regular file
9945 and we are not generating a shared library or pie, then we
9946 need to define the symbol in the executable on a call stub.
9947 This is to avoid text relocations. */
9948 s
->size
= (s
->size
+ 15) & -16;
9949 h
->root
.type
= bfd_link_hash_defined
;
9950 h
->root
.u
.def
.section
= s
;
9951 h
->root
.u
.def
.value
= s
->size
;
9958 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9959 read-only sections. */
9962 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9964 if (h
->root
.type
== bfd_link_hash_indirect
)
9967 if (readonly_dynrelocs (h
))
9969 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9971 /* Not an error, just cut short the traversal. */
9977 /* Set the sizes of the dynamic sections. */
9980 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9981 struct bfd_link_info
*info
)
9983 struct ppc_link_hash_table
*htab
;
9988 struct got_entry
*first_tlsld
;
9990 htab
= ppc_hash_table (info
);
9994 dynobj
= htab
->elf
.dynobj
;
9998 if (htab
->elf
.dynamic_sections_created
)
10000 /* Set the contents of the .interp section to the interpreter. */
10001 if (bfd_link_executable (info
) && !info
->nointerp
)
10003 s
= bfd_get_linker_section (dynobj
, ".interp");
10006 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10007 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10011 /* Set up .got offsets for local syms, and space for local dynamic
10013 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10015 struct got_entry
**lgot_ents
;
10016 struct got_entry
**end_lgot_ents
;
10017 struct plt_entry
**local_plt
;
10018 struct plt_entry
**end_local_plt
;
10019 unsigned char *lgot_masks
;
10020 bfd_size_type locsymcount
;
10021 Elf_Internal_Shdr
*symtab_hdr
;
10023 if (!is_ppc64_elf (ibfd
))
10026 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10028 struct ppc_dyn_relocs
*p
;
10030 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10032 if (!bfd_is_abs_section (p
->sec
)
10033 && bfd_is_abs_section (p
->sec
->output_section
))
10035 /* Input section has been discarded, either because
10036 it is a copy of a linkonce section or due to
10037 linker script /DISCARD/, so we'll be discarding
10040 else if (p
->count
!= 0)
10042 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10044 srel
= htab
->elf
.irelplt
;
10045 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10046 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10047 info
->flags
|= DF_TEXTREL
;
10052 lgot_ents
= elf_local_got_ents (ibfd
);
10056 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10057 locsymcount
= symtab_hdr
->sh_info
;
10058 end_lgot_ents
= lgot_ents
+ locsymcount
;
10059 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10060 end_local_plt
= local_plt
+ locsymcount
;
10061 lgot_masks
= (unsigned char *) end_local_plt
;
10062 s
= ppc64_elf_tdata (ibfd
)->got
;
10063 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10065 struct got_entry
**pent
, *ent
;
10068 while ((ent
= *pent
) != NULL
)
10069 if (ent
->got
.refcount
> 0)
10071 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10073 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10078 unsigned int ent_size
= 8;
10079 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10081 ent
->got
.offset
= s
->size
;
10082 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10087 s
->size
+= ent_size
;
10088 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10090 htab
->elf
.irelplt
->size
+= rel_size
;
10091 htab
->got_reli_size
+= rel_size
;
10093 else if (bfd_link_pic (info
))
10095 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10096 srel
->size
+= rel_size
;
10105 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10106 for (; local_plt
< end_local_plt
; ++local_plt
)
10108 struct plt_entry
*ent
;
10110 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10111 if (ent
->plt
.refcount
> 0)
10113 s
= htab
->elf
.iplt
;
10114 ent
->plt
.offset
= s
->size
;
10115 s
->size
+= PLT_ENTRY_SIZE (htab
);
10117 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10120 ent
->plt
.offset
= (bfd_vma
) -1;
10124 /* Allocate global sym .plt and .got entries, and space for global
10125 sym dynamic relocs. */
10126 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10127 /* Stash the end of glink branch table. */
10128 if (htab
->glink
!= NULL
)
10129 htab
->glink
->rawsize
= htab
->glink
->size
;
10131 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10132 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10134 first_tlsld
= NULL
;
10135 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10137 struct got_entry
*ent
;
10139 if (!is_ppc64_elf (ibfd
))
10142 ent
= ppc64_tlsld_got (ibfd
);
10143 if (ent
->got
.refcount
> 0)
10145 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10147 ent
->is_indirect
= TRUE
;
10148 ent
->got
.ent
= first_tlsld
;
10152 if (first_tlsld
== NULL
)
10154 s
= ppc64_elf_tdata (ibfd
)->got
;
10155 ent
->got
.offset
= s
->size
;
10158 if (bfd_link_pic (info
))
10160 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10161 srel
->size
+= sizeof (Elf64_External_Rela
);
10166 ent
->got
.offset
= (bfd_vma
) -1;
10169 /* We now have determined the sizes of the various dynamic sections.
10170 Allocate memory for them. */
10172 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10174 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10177 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10178 /* These haven't been allocated yet; don't strip. */
10180 else if (s
== htab
->elf
.sgot
10181 || s
== htab
->elf
.splt
10182 || s
== htab
->elf
.iplt
10183 || s
== htab
->glink
10184 || s
== htab
->elf
.sdynbss
10185 || s
== htab
->elf
.sdynrelro
)
10187 /* Strip this section if we don't need it; see the
10190 else if (s
== htab
->glink_eh_frame
)
10192 if (!bfd_is_abs_section (s
->output_section
))
10193 /* Not sized yet. */
10196 else if (CONST_STRNEQ (s
->name
, ".rela"))
10200 if (s
!= htab
->elf
.srelplt
)
10203 /* We use the reloc_count field as a counter if we need
10204 to copy relocs into the output file. */
10205 s
->reloc_count
= 0;
10210 /* It's not one of our sections, so don't allocate space. */
10216 /* If we don't need this section, strip it from the
10217 output file. This is mostly to handle .rela.bss and
10218 .rela.plt. We must create both sections in
10219 create_dynamic_sections, because they must be created
10220 before the linker maps input sections to output
10221 sections. The linker does that before
10222 adjust_dynamic_symbol is called, and it is that
10223 function which decides whether anything needs to go
10224 into these sections. */
10225 s
->flags
|= SEC_EXCLUDE
;
10229 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10232 /* Allocate memory for the section contents. We use bfd_zalloc
10233 here in case unused entries are not reclaimed before the
10234 section's contents are written out. This should not happen,
10235 but this way if it does we get a R_PPC64_NONE reloc in .rela
10236 sections instead of garbage.
10237 We also rely on the section contents being zero when writing
10238 the GOT and .dynrelro. */
10239 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10240 if (s
->contents
== NULL
)
10244 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10246 if (!is_ppc64_elf (ibfd
))
10249 s
= ppc64_elf_tdata (ibfd
)->got
;
10250 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10253 s
->flags
|= SEC_EXCLUDE
;
10256 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10257 if (s
->contents
== NULL
)
10261 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10265 s
->flags
|= SEC_EXCLUDE
;
10268 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10269 if (s
->contents
== NULL
)
10272 s
->reloc_count
= 0;
10277 if (htab
->elf
.dynamic_sections_created
)
10279 bfd_boolean tls_opt
;
10281 /* Add some entries to the .dynamic section. We fill in the
10282 values later, in ppc64_elf_finish_dynamic_sections, but we
10283 must add the entries now so that we get the correct size for
10284 the .dynamic section. The DT_DEBUG entry is filled in by the
10285 dynamic linker and used by the debugger. */
10286 #define add_dynamic_entry(TAG, VAL) \
10287 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10289 if (bfd_link_executable (info
))
10291 if (!add_dynamic_entry (DT_DEBUG
, 0))
10295 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10297 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10298 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10299 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10300 || !add_dynamic_entry (DT_JMPREL
, 0)
10301 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10305 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10307 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10308 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10312 tls_opt
= (htab
->params
->tls_get_addr_opt
10313 && htab
->tls_get_addr_fd
!= NULL
10314 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10315 if (tls_opt
|| !htab
->opd_abi
)
10317 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10323 if (!add_dynamic_entry (DT_RELA
, 0)
10324 || !add_dynamic_entry (DT_RELASZ
, 0)
10325 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10328 /* If any dynamic relocs apply to a read-only section,
10329 then we need a DT_TEXTREL entry. */
10330 if ((info
->flags
& DF_TEXTREL
) == 0)
10331 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10333 if ((info
->flags
& DF_TEXTREL
) != 0)
10335 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10340 #undef add_dynamic_entry
10345 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10348 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10350 if (h
->plt
.plist
!= NULL
10352 && !h
->pointer_equality_needed
)
10355 return _bfd_elf_hash_symbol (h
);
10358 /* Determine the type of stub needed, if any, for a call. */
10360 static inline enum ppc_stub_type
10361 ppc_type_of_stub (asection
*input_sec
,
10362 const Elf_Internal_Rela
*rel
,
10363 struct ppc_link_hash_entry
**hash
,
10364 struct plt_entry
**plt_ent
,
10365 bfd_vma destination
,
10366 unsigned long local_off
)
10368 struct ppc_link_hash_entry
*h
= *hash
;
10370 bfd_vma branch_offset
;
10371 bfd_vma max_branch_offset
;
10372 enum elf_ppc64_reloc_type r_type
;
10376 struct plt_entry
*ent
;
10377 struct ppc_link_hash_entry
*fdh
= h
;
10379 && h
->oh
->is_func_descriptor
)
10381 fdh
= ppc_follow_link (h
->oh
);
10385 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10386 if (ent
->addend
== rel
->r_addend
10387 && ent
->plt
.offset
!= (bfd_vma
) -1)
10390 return ppc_stub_plt_call
;
10393 /* Here, we know we don't have a plt entry. If we don't have a
10394 either a defined function descriptor or a defined entry symbol
10395 in a regular object file, then it is pointless trying to make
10396 any other type of stub. */
10397 if (!is_static_defined (&fdh
->elf
)
10398 && !is_static_defined (&h
->elf
))
10399 return ppc_stub_none
;
10401 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10403 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10404 struct plt_entry
**local_plt
= (struct plt_entry
**)
10405 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10406 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10408 if (local_plt
[r_symndx
] != NULL
)
10410 struct plt_entry
*ent
;
10412 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10413 if (ent
->addend
== rel
->r_addend
10414 && ent
->plt
.offset
!= (bfd_vma
) -1)
10417 return ppc_stub_plt_call
;
10422 /* Determine where the call point is. */
10423 location
= (input_sec
->output_offset
10424 + input_sec
->output_section
->vma
10427 branch_offset
= destination
- location
;
10428 r_type
= ELF64_R_TYPE (rel
->r_info
);
10430 /* Determine if a long branch stub is needed. */
10431 max_branch_offset
= 1 << 25;
10432 if (r_type
!= R_PPC64_REL24
)
10433 max_branch_offset
= 1 << 15;
10435 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10436 /* We need a stub. Figure out whether a long_branch or plt_branch
10437 is needed later. */
10438 return ppc_stub_long_branch
;
10440 return ppc_stub_none
;
10443 /* With power7 weakly ordered memory model, it is possible for ld.so
10444 to update a plt entry in one thread and have another thread see a
10445 stale zero toc entry. To avoid this we need some sort of acquire
10446 barrier in the call stub. One solution is to make the load of the
10447 toc word seem to appear to depend on the load of the function entry
10448 word. Another solution is to test for r2 being zero, and branch to
10449 the appropriate glink entry if so.
10451 . fake dep barrier compare
10452 . ld 12,xxx(2) ld 12,xxx(2)
10453 . mtctr 12 mtctr 12
10454 . xor 11,12,12 ld 2,xxx+8(2)
10455 . add 2,2,11 cmpldi 2,0
10456 . ld 2,xxx+8(2) bnectr+
10457 . bctr b <glink_entry>
10459 The solution involving the compare turns out to be faster, so
10460 that's what we use unless the branch won't reach. */
10462 #define ALWAYS_USE_FAKE_DEP 0
10463 #define ALWAYS_EMIT_R2SAVE 0
10465 #define PPC_LO(v) ((v) & 0xffff)
10466 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10467 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10469 static inline unsigned int
10470 plt_stub_size (struct ppc_link_hash_table
*htab
,
10471 struct ppc_stub_hash_entry
*stub_entry
,
10474 unsigned size
= 12;
10476 if (ALWAYS_EMIT_R2SAVE
10477 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10479 if (PPC_HA (off
) != 0)
10484 if (htab
->params
->plt_static_chain
)
10486 if (htab
->params
->plt_thread_safe
10487 && htab
->elf
.dynamic_sections_created
10488 && stub_entry
->h
!= NULL
10489 && stub_entry
->h
->elf
.dynindx
!= -1)
10491 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10494 if (stub_entry
->h
!= NULL
10495 && (stub_entry
->h
== htab
->tls_get_addr_fd
10496 || stub_entry
->h
== htab
->tls_get_addr
)
10497 && htab
->params
->tls_get_addr_opt
)
10502 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10503 then return the padding needed to do so. */
10504 static inline unsigned int
10505 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10506 struct ppc_stub_hash_entry
*stub_entry
,
10509 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10510 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10511 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10513 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10514 > ((stub_size
- 1) & -stub_align
))
10515 return stub_align
- (stub_off
& (stub_align
- 1));
10519 /* Build a .plt call stub. */
10521 static inline bfd_byte
*
10522 build_plt_stub (struct ppc_link_hash_table
*htab
,
10523 struct ppc_stub_hash_entry
*stub_entry
,
10524 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10526 bfd
*obfd
= htab
->params
->stub_bfd
;
10527 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10528 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10529 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10530 && htab
->elf
.dynamic_sections_created
10531 && stub_entry
->h
!= NULL
10532 && stub_entry
->h
->elf
.dynindx
!= -1);
10533 bfd_boolean use_fake_dep
= plt_thread_safe
;
10534 bfd_vma cmp_branch_off
= 0;
10536 if (!ALWAYS_USE_FAKE_DEP
10539 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10540 || stub_entry
->h
== htab
->tls_get_addr
)
10541 && htab
->params
->tls_get_addr_opt
))
10543 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10544 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10545 / PLT_ENTRY_SIZE (htab
));
10546 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10549 if (pltindex
> 32768)
10550 glinkoff
+= (pltindex
- 32768) * 4;
10552 + htab
->glink
->output_offset
10553 + htab
->glink
->output_section
->vma
);
10554 from
= (p
- stub_entry
->group
->stub_sec
->contents
10555 + 4 * (ALWAYS_EMIT_R2SAVE
10556 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10557 + 4 * (PPC_HA (offset
) != 0)
10558 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10559 != PPC_HA (offset
))
10560 + 4 * (plt_static_chain
!= 0)
10562 + stub_entry
->group
->stub_sec
->output_offset
10563 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10564 cmp_branch_off
= to
- from
;
10565 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10568 if (PPC_HA (offset
) != 0)
10572 if (ALWAYS_EMIT_R2SAVE
10573 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10574 r
[0].r_offset
+= 4;
10575 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10576 r
[1].r_offset
= r
[0].r_offset
+ 4;
10577 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10578 r
[1].r_addend
= r
[0].r_addend
;
10581 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10583 r
[2].r_offset
= r
[1].r_offset
+ 4;
10584 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10585 r
[2].r_addend
= r
[0].r_addend
;
10589 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10590 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10591 r
[2].r_addend
= r
[0].r_addend
+ 8;
10592 if (plt_static_chain
)
10594 r
[3].r_offset
= r
[2].r_offset
+ 4;
10595 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10596 r
[3].r_addend
= r
[0].r_addend
+ 16;
10601 if (ALWAYS_EMIT_R2SAVE
10602 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10603 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10606 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10607 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10611 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10612 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10615 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10617 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10620 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10625 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10626 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10628 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10629 if (plt_static_chain
)
10630 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10637 if (ALWAYS_EMIT_R2SAVE
10638 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10639 r
[0].r_offset
+= 4;
10640 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10643 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10645 r
[1].r_offset
= r
[0].r_offset
+ 4;
10646 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10647 r
[1].r_addend
= r
[0].r_addend
;
10651 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10652 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10653 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10654 if (plt_static_chain
)
10656 r
[2].r_offset
= r
[1].r_offset
+ 4;
10657 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10658 r
[2].r_addend
= r
[0].r_addend
+ 8;
10663 if (ALWAYS_EMIT_R2SAVE
10664 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10665 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10666 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10668 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10670 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10673 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10678 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10679 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10681 if (plt_static_chain
)
10682 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10683 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10686 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10688 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10689 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10690 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10693 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10697 /* Build a special .plt call stub for __tls_get_addr. */
10699 #define LD_R11_0R3 0xe9630000
10700 #define LD_R12_0R3 0xe9830000
10701 #define MR_R0_R3 0x7c601b78
10702 #define CMPDI_R11_0 0x2c2b0000
10703 #define ADD_R3_R12_R13 0x7c6c6a14
10704 #define BEQLR 0x4d820020
10705 #define MR_R3_R0 0x7c030378
10706 #define STD_R11_0R1 0xf9610000
10707 #define BCTRL 0x4e800421
10708 #define LD_R11_0R1 0xe9610000
10709 #define MTLR_R11 0x7d6803a6
10711 static inline bfd_byte
*
10712 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10713 struct ppc_stub_hash_entry
*stub_entry
,
10714 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10716 bfd
*obfd
= htab
->params
->stub_bfd
;
10718 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10719 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10720 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10721 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10722 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10723 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10724 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10725 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10726 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10729 r
[0].r_offset
+= 9 * 4;
10730 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10731 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10733 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10734 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10735 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10736 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10741 static Elf_Internal_Rela
*
10742 get_relocs (asection
*sec
, int count
)
10744 Elf_Internal_Rela
*relocs
;
10745 struct bfd_elf_section_data
*elfsec_data
;
10747 elfsec_data
= elf_section_data (sec
);
10748 relocs
= elfsec_data
->relocs
;
10749 if (relocs
== NULL
)
10751 bfd_size_type relsize
;
10752 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10753 relocs
= bfd_alloc (sec
->owner
, relsize
);
10754 if (relocs
== NULL
)
10756 elfsec_data
->relocs
= relocs
;
10757 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10758 sizeof (Elf_Internal_Shdr
));
10759 if (elfsec_data
->rela
.hdr
== NULL
)
10761 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10762 * sizeof (Elf64_External_Rela
));
10763 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10764 sec
->reloc_count
= 0;
10766 relocs
+= sec
->reloc_count
;
10767 sec
->reloc_count
+= count
;
10772 get_r2off (struct bfd_link_info
*info
,
10773 struct ppc_stub_hash_entry
*stub_entry
)
10775 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10776 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10780 /* Support linking -R objects. Get the toc pointer from the
10783 if (!htab
->opd_abi
)
10785 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10786 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10788 if (strcmp (opd
->name
, ".opd") != 0
10789 || opd
->reloc_count
!= 0)
10791 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10792 stub_entry
->h
->elf
.root
.root
.string
);
10793 bfd_set_error (bfd_error_bad_value
);
10794 return (bfd_vma
) -1;
10796 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10797 return (bfd_vma
) -1;
10798 r2off
= bfd_get_64 (opd
->owner
, buf
);
10799 r2off
-= elf_gp (info
->output_bfd
);
10801 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10806 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10808 struct ppc_stub_hash_entry
*stub_entry
;
10809 struct ppc_branch_hash_entry
*br_entry
;
10810 struct bfd_link_info
*info
;
10811 struct ppc_link_hash_table
*htab
;
10816 Elf_Internal_Rela
*r
;
10819 /* Massage our args to the form they really have. */
10820 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10823 htab
= ppc_hash_table (info
);
10827 /* Make a note of the offset within the stubs for this entry. */
10828 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10829 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10831 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10832 switch (stub_entry
->stub_type
)
10834 case ppc_stub_long_branch
:
10835 case ppc_stub_long_branch_r2off
:
10836 /* Branches are relative. This is where we are going to. */
10837 dest
= (stub_entry
->target_value
10838 + stub_entry
->target_section
->output_offset
10839 + stub_entry
->target_section
->output_section
->vma
);
10840 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10843 /* And this is where we are coming from. */
10844 off
-= (stub_entry
->stub_offset
10845 + stub_entry
->group
->stub_sec
->output_offset
10846 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10849 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10851 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10853 if (r2off
== (bfd_vma
) -1)
10855 htab
->stub_error
= TRUE
;
10858 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10861 if (PPC_HA (r2off
) != 0)
10863 bfd_put_32 (htab
->params
->stub_bfd
,
10864 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10868 if (PPC_LO (r2off
) != 0)
10870 bfd_put_32 (htab
->params
->stub_bfd
,
10871 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10877 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10879 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10881 info
->callbacks
->einfo
10882 (_("%P: long branch stub `%s' offset overflow\n"),
10883 stub_entry
->root
.string
);
10884 htab
->stub_error
= TRUE
;
10888 if (info
->emitrelocations
)
10890 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10893 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10894 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10895 r
->r_addend
= dest
;
10896 if (stub_entry
->h
!= NULL
)
10898 struct elf_link_hash_entry
**hashes
;
10899 unsigned long symndx
;
10900 struct ppc_link_hash_entry
*h
;
10902 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10903 if (hashes
== NULL
)
10905 bfd_size_type hsize
;
10907 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10908 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10909 if (hashes
== NULL
)
10911 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10912 htab
->stub_globals
= 1;
10914 symndx
= htab
->stub_globals
++;
10916 hashes
[symndx
] = &h
->elf
;
10917 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10918 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10919 h
= ppc_follow_link (h
->oh
);
10920 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10921 /* H is an opd symbol. The addend must be zero. */
10925 off
= (h
->elf
.root
.u
.def
.value
10926 + h
->elf
.root
.u
.def
.section
->output_offset
10927 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10928 r
->r_addend
-= off
;
10934 case ppc_stub_plt_branch
:
10935 case ppc_stub_plt_branch_r2off
:
10936 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10937 stub_entry
->root
.string
+ 9,
10939 if (br_entry
== NULL
)
10941 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10942 stub_entry
->root
.string
);
10943 htab
->stub_error
= TRUE
;
10947 dest
= (stub_entry
->target_value
10948 + stub_entry
->target_section
->output_offset
10949 + stub_entry
->target_section
->output_section
->vma
);
10950 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10951 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10953 bfd_put_64 (htab
->brlt
->owner
, dest
,
10954 htab
->brlt
->contents
+ br_entry
->offset
);
10956 if (br_entry
->iter
== htab
->stub_iteration
)
10958 br_entry
->iter
= 0;
10960 if (htab
->relbrlt
!= NULL
)
10962 /* Create a reloc for the branch lookup table entry. */
10963 Elf_Internal_Rela rela
;
10966 rela
.r_offset
= (br_entry
->offset
10967 + htab
->brlt
->output_offset
10968 + htab
->brlt
->output_section
->vma
);
10969 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10970 rela
.r_addend
= dest
;
10972 rl
= htab
->relbrlt
->contents
;
10973 rl
+= (htab
->relbrlt
->reloc_count
++
10974 * sizeof (Elf64_External_Rela
));
10975 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10977 else if (info
->emitrelocations
)
10979 r
= get_relocs (htab
->brlt
, 1);
10982 /* brlt, being SEC_LINKER_CREATED does not go through the
10983 normal reloc processing. Symbols and offsets are not
10984 translated from input file to output file form, so
10985 set up the offset per the output file. */
10986 r
->r_offset
= (br_entry
->offset
10987 + htab
->brlt
->output_offset
10988 + htab
->brlt
->output_section
->vma
);
10989 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10990 r
->r_addend
= dest
;
10994 dest
= (br_entry
->offset
10995 + htab
->brlt
->output_offset
10996 + htab
->brlt
->output_section
->vma
);
10999 - elf_gp (htab
->brlt
->output_section
->owner
)
11000 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11002 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11004 info
->callbacks
->einfo
11005 (_("%P: linkage table error against `%T'\n"),
11006 stub_entry
->root
.string
);
11007 bfd_set_error (bfd_error_bad_value
);
11008 htab
->stub_error
= TRUE
;
11012 if (info
->emitrelocations
)
11014 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11017 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11018 if (bfd_big_endian (info
->output_bfd
))
11019 r
[0].r_offset
+= 2;
11020 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11021 r
[0].r_offset
+= 4;
11022 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11023 r
[0].r_addend
= dest
;
11024 if (PPC_HA (off
) != 0)
11026 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11027 r
[1].r_offset
= r
[0].r_offset
+ 4;
11028 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11029 r
[1].r_addend
= r
[0].r_addend
;
11033 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11035 if (PPC_HA (off
) != 0)
11038 bfd_put_32 (htab
->params
->stub_bfd
,
11039 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11041 bfd_put_32 (htab
->params
->stub_bfd
,
11042 LD_R12_0R12
| PPC_LO (off
), loc
);
11047 bfd_put_32 (htab
->params
->stub_bfd
,
11048 LD_R12_0R2
| PPC_LO (off
), loc
);
11053 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11055 if (r2off
== (bfd_vma
) -1)
11057 htab
->stub_error
= TRUE
;
11061 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11064 if (PPC_HA (off
) != 0)
11067 bfd_put_32 (htab
->params
->stub_bfd
,
11068 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11070 bfd_put_32 (htab
->params
->stub_bfd
,
11071 LD_R12_0R12
| PPC_LO (off
), loc
);
11074 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11076 if (PPC_HA (r2off
) != 0)
11080 bfd_put_32 (htab
->params
->stub_bfd
,
11081 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11083 if (PPC_LO (r2off
) != 0)
11087 bfd_put_32 (htab
->params
->stub_bfd
,
11088 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11092 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11094 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11097 case ppc_stub_plt_call
:
11098 case ppc_stub_plt_call_r2save
:
11099 if (stub_entry
->h
!= NULL
11100 && stub_entry
->h
->is_func_descriptor
11101 && stub_entry
->h
->oh
!= NULL
)
11103 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11105 /* If the old-ABI "dot-symbol" is undefined make it weak so
11106 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11107 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11108 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11109 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11110 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11113 /* Now build the stub. */
11114 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11115 if (dest
>= (bfd_vma
) -2)
11118 plt
= htab
->elf
.splt
;
11119 if (!htab
->elf
.dynamic_sections_created
11120 || stub_entry
->h
== NULL
11121 || stub_entry
->h
->elf
.dynindx
== -1)
11122 plt
= htab
->elf
.iplt
;
11124 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11126 if (stub_entry
->h
== NULL
11127 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11129 Elf_Internal_Rela rela
;
11132 rela
.r_offset
= dest
;
11134 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11136 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11137 rela
.r_addend
= (stub_entry
->target_value
11138 + stub_entry
->target_section
->output_offset
11139 + stub_entry
->target_section
->output_section
->vma
);
11141 rl
= (htab
->elf
.irelplt
->contents
11142 + (htab
->elf
.irelplt
->reloc_count
++
11143 * sizeof (Elf64_External_Rela
)));
11144 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11145 stub_entry
->plt_ent
->plt
.offset
|= 1;
11149 - elf_gp (plt
->output_section
->owner
)
11150 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11152 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11154 info
->callbacks
->einfo
11155 /* xgettext:c-format */
11156 (_("%P: linkage table error against `%T'\n"),
11157 stub_entry
->h
!= NULL
11158 ? stub_entry
->h
->elf
.root
.root
.string
11160 bfd_set_error (bfd_error_bad_value
);
11161 htab
->stub_error
= TRUE
;
11165 if (htab
->params
->plt_stub_align
!= 0)
11167 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11169 stub_entry
->group
->stub_sec
->size
+= pad
;
11170 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11175 if (info
->emitrelocations
)
11177 r
= get_relocs (stub_entry
->group
->stub_sec
,
11178 ((PPC_HA (off
) != 0)
11180 ? 2 + (htab
->params
->plt_static_chain
11181 && PPC_HA (off
+ 16) == PPC_HA (off
))
11185 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11186 if (bfd_big_endian (info
->output_bfd
))
11187 r
[0].r_offset
+= 2;
11188 r
[0].r_addend
= dest
;
11190 if (stub_entry
->h
!= NULL
11191 && (stub_entry
->h
== htab
->tls_get_addr_fd
11192 || stub_entry
->h
== htab
->tls_get_addr
)
11193 && htab
->params
->tls_get_addr_opt
)
11194 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11196 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11200 case ppc_stub_save_res
:
11208 stub_entry
->group
->stub_sec
->size
+= size
;
11210 if (htab
->params
->emit_stub_syms
)
11212 struct elf_link_hash_entry
*h
;
11215 const char *const stub_str
[] = { "long_branch",
11216 "long_branch_r2off",
11218 "plt_branch_r2off",
11222 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11223 len2
= strlen (stub_entry
->root
.string
);
11224 name
= bfd_malloc (len1
+ len2
+ 2);
11227 memcpy (name
, stub_entry
->root
.string
, 9);
11228 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11229 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11230 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11233 if (h
->root
.type
== bfd_link_hash_new
)
11235 h
->root
.type
= bfd_link_hash_defined
;
11236 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11237 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11238 h
->ref_regular
= 1;
11239 h
->def_regular
= 1;
11240 h
->ref_regular_nonweak
= 1;
11241 h
->forced_local
= 1;
11243 h
->root
.linker_def
= 1;
11250 /* As above, but don't actually build the stub. Just bump offset so
11251 we know stub section sizes, and select plt_branch stubs where
11252 long_branch stubs won't do. */
11255 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11257 struct ppc_stub_hash_entry
*stub_entry
;
11258 struct bfd_link_info
*info
;
11259 struct ppc_link_hash_table
*htab
;
11263 /* Massage our args to the form they really have. */
11264 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11267 htab
= ppc_hash_table (info
);
11271 if (stub_entry
->h
!= NULL
11272 && stub_entry
->h
->save_res
11273 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11274 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11276 /* Don't make stubs to out-of-line register save/restore
11277 functions. Instead, emit copies of the functions. */
11278 stub_entry
->group
->needs_save_res
= 1;
11279 stub_entry
->stub_type
= ppc_stub_save_res
;
11283 if (stub_entry
->stub_type
== ppc_stub_plt_call
11284 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11287 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11288 if (off
>= (bfd_vma
) -2)
11290 plt
= htab
->elf
.splt
;
11291 if (!htab
->elf
.dynamic_sections_created
11292 || stub_entry
->h
== NULL
11293 || stub_entry
->h
->elf
.dynindx
== -1)
11294 plt
= htab
->elf
.iplt
;
11295 off
+= (plt
->output_offset
11296 + plt
->output_section
->vma
11297 - elf_gp (plt
->output_section
->owner
)
11298 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11300 size
= plt_stub_size (htab
, stub_entry
, off
);
11301 if (htab
->params
->plt_stub_align
)
11302 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11303 if (info
->emitrelocations
)
11305 stub_entry
->group
->stub_sec
->reloc_count
11306 += ((PPC_HA (off
) != 0)
11308 ? 2 + (htab
->params
->plt_static_chain
11309 && PPC_HA (off
+ 16) == PPC_HA (off
))
11311 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11316 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11319 bfd_vma local_off
= 0;
11321 off
= (stub_entry
->target_value
11322 + stub_entry
->target_section
->output_offset
11323 + stub_entry
->target_section
->output_section
->vma
);
11324 off
-= (stub_entry
->group
->stub_sec
->size
11325 + stub_entry
->group
->stub_sec
->output_offset
11326 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11328 /* Reset the stub type from the plt variant in case we now
11329 can reach with a shorter stub. */
11330 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11331 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11334 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11336 r2off
= get_r2off (info
, stub_entry
);
11337 if (r2off
== (bfd_vma
) -1)
11339 htab
->stub_error
= TRUE
;
11343 if (PPC_HA (r2off
) != 0)
11345 if (PPC_LO (r2off
) != 0)
11350 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11352 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11353 Do the same for -R objects without function descriptors. */
11354 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11355 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11357 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11359 struct ppc_branch_hash_entry
*br_entry
;
11361 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11362 stub_entry
->root
.string
+ 9,
11364 if (br_entry
== NULL
)
11366 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11367 stub_entry
->root
.string
);
11368 htab
->stub_error
= TRUE
;
11372 if (br_entry
->iter
!= htab
->stub_iteration
)
11374 br_entry
->iter
= htab
->stub_iteration
;
11375 br_entry
->offset
= htab
->brlt
->size
;
11376 htab
->brlt
->size
+= 8;
11378 if (htab
->relbrlt
!= NULL
)
11379 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11380 else if (info
->emitrelocations
)
11382 htab
->brlt
->reloc_count
+= 1;
11383 htab
->brlt
->flags
|= SEC_RELOC
;
11387 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11388 off
= (br_entry
->offset
11389 + htab
->brlt
->output_offset
11390 + htab
->brlt
->output_section
->vma
11391 - elf_gp (htab
->brlt
->output_section
->owner
)
11392 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11394 if (info
->emitrelocations
)
11396 stub_entry
->group
->stub_sec
->reloc_count
11397 += 1 + (PPC_HA (off
) != 0);
11398 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11401 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11404 if (PPC_HA (off
) != 0)
11410 if (PPC_HA (off
) != 0)
11413 if (PPC_HA (r2off
) != 0)
11415 if (PPC_LO (r2off
) != 0)
11419 else if (info
->emitrelocations
)
11421 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11422 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11426 stub_entry
->group
->stub_sec
->size
+= size
;
11430 /* Set up various things so that we can make a list of input sections
11431 for each output section included in the link. Returns -1 on error,
11432 0 when no stubs will be needed, and 1 on success. */
11435 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11439 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11444 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11445 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11446 htab
->sec_info
= bfd_zmalloc (amt
);
11447 if (htab
->sec_info
== NULL
)
11450 /* Set toc_off for com, und, abs and ind sections. */
11451 for (id
= 0; id
< 3; id
++)
11452 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11457 /* Set up for first pass at multitoc partitioning. */
11460 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11462 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11464 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11465 htab
->toc_bfd
= NULL
;
11466 htab
->toc_first_sec
= NULL
;
11469 /* The linker repeatedly calls this function for each TOC input section
11470 and linker generated GOT section. Group input bfds such that the toc
11471 within a group is less than 64k in size. */
11474 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11476 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11477 bfd_vma addr
, off
, limit
;
11482 if (!htab
->second_toc_pass
)
11484 /* Keep track of the first .toc or .got section for this input bfd. */
11485 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11489 htab
->toc_bfd
= isec
->owner
;
11490 htab
->toc_first_sec
= isec
;
11493 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11494 off
= addr
- htab
->toc_curr
;
11495 limit
= 0x80008000;
11496 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11498 if (off
+ isec
->size
> limit
)
11500 addr
= (htab
->toc_first_sec
->output_offset
11501 + htab
->toc_first_sec
->output_section
->vma
);
11502 htab
->toc_curr
= addr
;
11503 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11506 /* toc_curr is the base address of this toc group. Set elf_gp
11507 for the input section to be the offset relative to the
11508 output toc base plus 0x8000. Making the input elf_gp an
11509 offset allows us to move the toc as a whole without
11510 recalculating input elf_gp. */
11511 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11512 off
+= TOC_BASE_OFF
;
11514 /* Die if someone uses a linker script that doesn't keep input
11515 file .toc and .got together. */
11517 && elf_gp (isec
->owner
) != 0
11518 && elf_gp (isec
->owner
) != off
)
11521 elf_gp (isec
->owner
) = off
;
11525 /* During the second pass toc_first_sec points to the start of
11526 a toc group, and toc_curr is used to track the old elf_gp.
11527 We use toc_bfd to ensure we only look at each bfd once. */
11528 if (htab
->toc_bfd
== isec
->owner
)
11530 htab
->toc_bfd
= isec
->owner
;
11532 if (htab
->toc_first_sec
== NULL
11533 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11535 htab
->toc_curr
= elf_gp (isec
->owner
);
11536 htab
->toc_first_sec
= isec
;
11538 addr
= (htab
->toc_first_sec
->output_offset
11539 + htab
->toc_first_sec
->output_section
->vma
);
11540 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11541 elf_gp (isec
->owner
) = off
;
11546 /* Called via elf_link_hash_traverse to merge GOT entries for global
11550 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11552 if (h
->root
.type
== bfd_link_hash_indirect
)
11555 merge_got_entries (&h
->got
.glist
);
11560 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11564 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11566 struct got_entry
*gent
;
11568 if (h
->root
.type
== bfd_link_hash_indirect
)
11571 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11572 if (!gent
->is_indirect
)
11573 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11577 /* Called on the first multitoc pass after the last call to
11578 ppc64_elf_next_toc_section. This function removes duplicate GOT
11582 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11584 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11585 struct bfd
*ibfd
, *ibfd2
;
11586 bfd_boolean done_something
;
11588 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11590 if (!htab
->do_multi_toc
)
11593 /* Merge global sym got entries within a toc group. */
11594 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11596 /* And tlsld_got. */
11597 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11599 struct got_entry
*ent
, *ent2
;
11601 if (!is_ppc64_elf (ibfd
))
11604 ent
= ppc64_tlsld_got (ibfd
);
11605 if (!ent
->is_indirect
11606 && ent
->got
.offset
!= (bfd_vma
) -1)
11608 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11610 if (!is_ppc64_elf (ibfd2
))
11613 ent2
= ppc64_tlsld_got (ibfd2
);
11614 if (!ent2
->is_indirect
11615 && ent2
->got
.offset
!= (bfd_vma
) -1
11616 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11618 ent2
->is_indirect
= TRUE
;
11619 ent2
->got
.ent
= ent
;
11625 /* Zap sizes of got sections. */
11626 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11627 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11628 htab
->got_reli_size
= 0;
11630 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11632 asection
*got
, *relgot
;
11634 if (!is_ppc64_elf (ibfd
))
11637 got
= ppc64_elf_tdata (ibfd
)->got
;
11640 got
->rawsize
= got
->size
;
11642 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11643 relgot
->rawsize
= relgot
->size
;
11648 /* Now reallocate the got, local syms first. We don't need to
11649 allocate section contents again since we never increase size. */
11650 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11652 struct got_entry
**lgot_ents
;
11653 struct got_entry
**end_lgot_ents
;
11654 struct plt_entry
**local_plt
;
11655 struct plt_entry
**end_local_plt
;
11656 unsigned char *lgot_masks
;
11657 bfd_size_type locsymcount
;
11658 Elf_Internal_Shdr
*symtab_hdr
;
11661 if (!is_ppc64_elf (ibfd
))
11664 lgot_ents
= elf_local_got_ents (ibfd
);
11668 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11669 locsymcount
= symtab_hdr
->sh_info
;
11670 end_lgot_ents
= lgot_ents
+ locsymcount
;
11671 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11672 end_local_plt
= local_plt
+ locsymcount
;
11673 lgot_masks
= (unsigned char *) end_local_plt
;
11674 s
= ppc64_elf_tdata (ibfd
)->got
;
11675 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11677 struct got_entry
*ent
;
11679 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11681 unsigned int ent_size
= 8;
11682 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11684 ent
->got
.offset
= s
->size
;
11685 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11690 s
->size
+= ent_size
;
11691 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11693 htab
->elf
.irelplt
->size
+= rel_size
;
11694 htab
->got_reli_size
+= rel_size
;
11696 else if (bfd_link_pic (info
))
11698 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11699 srel
->size
+= rel_size
;
11705 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11707 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11709 struct got_entry
*ent
;
11711 if (!is_ppc64_elf (ibfd
))
11714 ent
= ppc64_tlsld_got (ibfd
);
11715 if (!ent
->is_indirect
11716 && ent
->got
.offset
!= (bfd_vma
) -1)
11718 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11719 ent
->got
.offset
= s
->size
;
11721 if (bfd_link_pic (info
))
11723 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11724 srel
->size
+= sizeof (Elf64_External_Rela
);
11729 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11730 if (!done_something
)
11731 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11735 if (!is_ppc64_elf (ibfd
))
11738 got
= ppc64_elf_tdata (ibfd
)->got
;
11741 done_something
= got
->rawsize
!= got
->size
;
11742 if (done_something
)
11747 if (done_something
)
11748 (*htab
->params
->layout_sections_again
) ();
11750 /* Set up for second pass over toc sections to recalculate elf_gp
11751 on input sections. */
11752 htab
->toc_bfd
= NULL
;
11753 htab
->toc_first_sec
= NULL
;
11754 htab
->second_toc_pass
= TRUE
;
11755 return done_something
;
11758 /* Called after second pass of multitoc partitioning. */
11761 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11763 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11765 /* After the second pass, toc_curr tracks the TOC offset used
11766 for code sections below in ppc64_elf_next_input_section. */
11767 htab
->toc_curr
= TOC_BASE_OFF
;
11770 /* No toc references were found in ISEC. If the code in ISEC makes no
11771 calls, then there's no need to use toc adjusting stubs when branching
11772 into ISEC. Actually, indirect calls from ISEC are OK as they will
11773 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11774 needed, and 2 if a cyclical call-graph was found but no other reason
11775 for a stub was detected. If called from the top level, a return of
11776 2 means the same as a return of 0. */
11779 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11783 /* Mark this section as checked. */
11784 isec
->call_check_done
= 1;
11786 /* We know none of our code bearing sections will need toc stubs. */
11787 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11790 if (isec
->size
== 0)
11793 if (isec
->output_section
== NULL
)
11797 if (isec
->reloc_count
!= 0)
11799 Elf_Internal_Rela
*relstart
, *rel
;
11800 Elf_Internal_Sym
*local_syms
;
11801 struct ppc_link_hash_table
*htab
;
11803 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11804 info
->keep_memory
);
11805 if (relstart
== NULL
)
11808 /* Look for branches to outside of this section. */
11810 htab
= ppc_hash_table (info
);
11814 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11816 enum elf_ppc64_reloc_type r_type
;
11817 unsigned long r_symndx
;
11818 struct elf_link_hash_entry
*h
;
11819 struct ppc_link_hash_entry
*eh
;
11820 Elf_Internal_Sym
*sym
;
11822 struct _opd_sec_data
*opd
;
11826 r_type
= ELF64_R_TYPE (rel
->r_info
);
11827 if (r_type
!= R_PPC64_REL24
11828 && r_type
!= R_PPC64_REL14
11829 && r_type
!= R_PPC64_REL14_BRTAKEN
11830 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11833 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11834 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11841 /* Calls to dynamic lib functions go through a plt call stub
11843 eh
= (struct ppc_link_hash_entry
*) h
;
11845 && (eh
->elf
.plt
.plist
!= NULL
11847 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11853 if (sym_sec
== NULL
)
11854 /* Ignore other undefined symbols. */
11857 /* Assume branches to other sections not included in the
11858 link need stubs too, to cover -R and absolute syms. */
11859 if (sym_sec
->output_section
== NULL
)
11866 sym_value
= sym
->st_value
;
11869 if (h
->root
.type
!= bfd_link_hash_defined
11870 && h
->root
.type
!= bfd_link_hash_defweak
)
11872 sym_value
= h
->root
.u
.def
.value
;
11874 sym_value
+= rel
->r_addend
;
11876 /* If this branch reloc uses an opd sym, find the code section. */
11877 opd
= get_opd_info (sym_sec
);
11880 if (h
== NULL
&& opd
->adjust
!= NULL
)
11884 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11886 /* Assume deleted functions won't ever be called. */
11888 sym_value
+= adjust
;
11891 dest
= opd_entry_value (sym_sec
, sym_value
,
11892 &sym_sec
, NULL
, FALSE
);
11893 if (dest
== (bfd_vma
) -1)
11898 + sym_sec
->output_offset
11899 + sym_sec
->output_section
->vma
);
11901 /* Ignore branch to self. */
11902 if (sym_sec
== isec
)
11905 /* If the called function uses the toc, we need a stub. */
11906 if (sym_sec
->has_toc_reloc
11907 || sym_sec
->makes_toc_func_call
)
11913 /* Assume any branch that needs a long branch stub might in fact
11914 need a plt_branch stub. A plt_branch stub uses r2. */
11915 else if (dest
- (isec
->output_offset
11916 + isec
->output_section
->vma
11917 + rel
->r_offset
) + (1 << 25)
11918 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11926 /* If calling back to a section in the process of being
11927 tested, we can't say for sure that no toc adjusting stubs
11928 are needed, so don't return zero. */
11929 else if (sym_sec
->call_check_in_progress
)
11932 /* Branches to another section that itself doesn't have any TOC
11933 references are OK. Recursively call ourselves to check. */
11934 else if (!sym_sec
->call_check_done
)
11938 /* Mark current section as indeterminate, so that other
11939 sections that call back to current won't be marked as
11941 isec
->call_check_in_progress
= 1;
11942 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11943 isec
->call_check_in_progress
= 0;
11954 if (local_syms
!= NULL
11955 && (elf_symtab_hdr (isec
->owner
).contents
11956 != (unsigned char *) local_syms
))
11958 if (elf_section_data (isec
)->relocs
!= relstart
)
11963 && isec
->map_head
.s
!= NULL
11964 && (strcmp (isec
->output_section
->name
, ".init") == 0
11965 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11967 if (isec
->map_head
.s
->has_toc_reloc
11968 || isec
->map_head
.s
->makes_toc_func_call
)
11970 else if (!isec
->map_head
.s
->call_check_done
)
11973 isec
->call_check_in_progress
= 1;
11974 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11975 isec
->call_check_in_progress
= 0;
11982 isec
->makes_toc_func_call
= 1;
11987 /* The linker repeatedly calls this function for each input section,
11988 in the order that input sections are linked into output sections.
11989 Build lists of input sections to determine groupings between which
11990 we may insert linker stubs. */
11993 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11995 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12000 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12001 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12003 /* This happens to make the list in reverse order,
12004 which is what we want. */
12005 htab
->sec_info
[isec
->id
].u
.list
12006 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12007 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12010 if (htab
->multi_toc_needed
)
12012 /* Analyse sections that aren't already flagged as needing a
12013 valid toc pointer. Exclude .fixup for the linux kernel.
12014 .fixup contains branches, but only back to the function that
12015 hit an exception. */
12016 if (!(isec
->has_toc_reloc
12017 || (isec
->flags
& SEC_CODE
) == 0
12018 || strcmp (isec
->name
, ".fixup") == 0
12019 || isec
->call_check_done
))
12021 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12024 /* Make all sections use the TOC assigned for this object file.
12025 This will be wrong for pasted sections; We fix that in
12026 check_pasted_section(). */
12027 if (elf_gp (isec
->owner
) != 0)
12028 htab
->toc_curr
= elf_gp (isec
->owner
);
12031 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12035 /* Check that all .init and .fini sections use the same toc, if they
12036 have toc relocs. */
12039 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12041 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12045 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12046 bfd_vma toc_off
= 0;
12049 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12050 if (i
->has_toc_reloc
)
12053 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12054 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12059 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12060 if (i
->makes_toc_func_call
)
12062 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12066 /* Make sure the whole pasted function uses the same toc offset. */
12068 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12069 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12075 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12077 return (check_pasted_section (info
, ".init")
12078 & check_pasted_section (info
, ".fini"));
12081 /* See whether we can group stub sections together. Grouping stub
12082 sections may result in fewer stubs. More importantly, we need to
12083 put all .init* and .fini* stubs at the beginning of the .init or
12084 .fini output sections respectively, because glibc splits the
12085 _init and _fini functions into multiple parts. Putting a stub in
12086 the middle of a function is not a good idea. */
12089 group_sections (struct bfd_link_info
*info
,
12090 bfd_size_type stub_group_size
,
12091 bfd_boolean stubs_always_before_branch
)
12093 struct ppc_link_hash_table
*htab
;
12095 bfd_boolean suppress_size_errors
;
12097 htab
= ppc_hash_table (info
);
12101 suppress_size_errors
= FALSE
;
12102 if (stub_group_size
== 1)
12104 /* Default values. */
12105 if (stubs_always_before_branch
)
12106 stub_group_size
= 0x1e00000;
12108 stub_group_size
= 0x1c00000;
12109 suppress_size_errors
= TRUE
;
12112 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12116 if (osec
->id
>= htab
->sec_info_arr_size
)
12119 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12120 while (tail
!= NULL
)
12124 bfd_size_type total
;
12125 bfd_boolean big_sec
;
12127 struct map_stub
*group
;
12128 bfd_size_type group_size
;
12131 total
= tail
->size
;
12132 group_size
= (ppc64_elf_section_data (tail
) != NULL
12133 && ppc64_elf_section_data (tail
)->has_14bit_branch
12134 ? stub_group_size
>> 10 : stub_group_size
);
12136 big_sec
= total
> group_size
;
12137 if (big_sec
&& !suppress_size_errors
)
12138 /* xgettext:c-format */
12139 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12140 tail
->owner
, tail
);
12141 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12143 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12144 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12145 < (ppc64_elf_section_data (prev
) != NULL
12146 && ppc64_elf_section_data (prev
)->has_14bit_branch
12147 ? (group_size
= stub_group_size
>> 10) : group_size
))
12148 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12151 /* OK, the size from the start of CURR to the end is less
12152 than group_size and thus can be handled by one stub
12153 section. (or the tail section is itself larger than
12154 group_size, in which case we may be toast.) We should
12155 really be keeping track of the total size of stubs added
12156 here, as stubs contribute to the final output section
12157 size. That's a little tricky, and this way will only
12158 break if stubs added make the total size more than 2^25,
12159 ie. for the default stub_group_size, if stubs total more
12160 than 2097152 bytes, or nearly 75000 plt call stubs. */
12161 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12164 group
->link_sec
= curr
;
12165 group
->stub_sec
= NULL
;
12166 group
->needs_save_res
= 0;
12167 group
->next
= htab
->group
;
12168 htab
->group
= group
;
12171 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12172 /* Set up this stub group. */
12173 htab
->sec_info
[tail
->id
].u
.group
= group
;
12175 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12177 /* But wait, there's more! Input sections up to group_size
12178 bytes before the stub section can be handled by it too.
12179 Don't do this if we have a really large section after the
12180 stubs, as adding more stubs increases the chance that
12181 branches may not reach into the stub section. */
12182 if (!stubs_always_before_branch
&& !big_sec
)
12185 while (prev
!= NULL
12186 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12187 < (ppc64_elf_section_data (prev
) != NULL
12188 && ppc64_elf_section_data (prev
)->has_14bit_branch
12189 ? (group_size
= stub_group_size
>> 10) : group_size
))
12190 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12193 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12194 htab
->sec_info
[tail
->id
].u
.group
= group
;
12203 static const unsigned char glink_eh_frame_cie
[] =
12205 0, 0, 0, 16, /* length. */
12206 0, 0, 0, 0, /* id. */
12207 1, /* CIE version. */
12208 'z', 'R', 0, /* Augmentation string. */
12209 4, /* Code alignment. */
12210 0x78, /* Data alignment. */
12212 1, /* Augmentation size. */
12213 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12214 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
12218 /* Stripping output sections is normally done before dynamic section
12219 symbols have been allocated. This function is called later, and
12220 handles cases like htab->brlt which is mapped to its own output
12224 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12226 if (isec
->size
== 0
12227 && isec
->output_section
->size
== 0
12228 && !(isec
->output_section
->flags
& SEC_KEEP
)
12229 && !bfd_section_removed_from_list (info
->output_bfd
,
12230 isec
->output_section
)
12231 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12233 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12234 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12235 info
->output_bfd
->section_count
--;
12239 /* Determine and set the size of the stub section for a final link.
12241 The basic idea here is to examine all the relocations looking for
12242 PC-relative calls to a target that is unreachable with a "bl"
12246 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12248 bfd_size_type stub_group_size
;
12249 bfd_boolean stubs_always_before_branch
;
12250 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12255 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12256 htab
->params
->plt_thread_safe
= 1;
12257 if (!htab
->opd_abi
)
12258 htab
->params
->plt_thread_safe
= 0;
12259 else if (htab
->params
->plt_thread_safe
== -1)
12261 static const char *const thread_starter
[] =
12265 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12267 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12268 "mq_notify", "create_timer",
12273 "GOMP_parallel_start",
12274 "GOMP_parallel_loop_static",
12275 "GOMP_parallel_loop_static_start",
12276 "GOMP_parallel_loop_dynamic",
12277 "GOMP_parallel_loop_dynamic_start",
12278 "GOMP_parallel_loop_guided",
12279 "GOMP_parallel_loop_guided_start",
12280 "GOMP_parallel_loop_runtime",
12281 "GOMP_parallel_loop_runtime_start",
12282 "GOMP_parallel_sections",
12283 "GOMP_parallel_sections_start",
12289 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12291 struct elf_link_hash_entry
*h
;
12292 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12293 FALSE
, FALSE
, TRUE
);
12294 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12295 if (htab
->params
->plt_thread_safe
)
12299 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12300 if (htab
->params
->group_size
< 0)
12301 stub_group_size
= -htab
->params
->group_size
;
12303 stub_group_size
= htab
->params
->group_size
;
12305 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12308 #define STUB_SHRINK_ITER 20
12309 /* Loop until no stubs added. After iteration 20 of this loop we may
12310 exit on a stub section shrinking. This is to break out of a
12311 pathological case where adding stubs on one iteration decreases
12312 section gaps (perhaps due to alignment), which then requires
12313 fewer or smaller stubs on the next iteration. */
12318 unsigned int bfd_indx
;
12319 struct map_stub
*group
;
12320 asection
*stub_sec
;
12322 htab
->stub_iteration
+= 1;
12324 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12326 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12328 Elf_Internal_Shdr
*symtab_hdr
;
12330 Elf_Internal_Sym
*local_syms
= NULL
;
12332 if (!is_ppc64_elf (input_bfd
))
12335 /* We'll need the symbol table in a second. */
12336 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12337 if (symtab_hdr
->sh_info
== 0)
12340 /* Walk over each section attached to the input bfd. */
12341 for (section
= input_bfd
->sections
;
12343 section
= section
->next
)
12345 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12347 /* If there aren't any relocs, then there's nothing more
12349 if ((section
->flags
& SEC_RELOC
) == 0
12350 || (section
->flags
& SEC_ALLOC
) == 0
12351 || (section
->flags
& SEC_LOAD
) == 0
12352 || (section
->flags
& SEC_CODE
) == 0
12353 || section
->reloc_count
== 0)
12356 /* If this section is a link-once section that will be
12357 discarded, then don't create any stubs. */
12358 if (section
->output_section
== NULL
12359 || section
->output_section
->owner
!= info
->output_bfd
)
12362 /* Get the relocs. */
12364 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12365 info
->keep_memory
);
12366 if (internal_relocs
== NULL
)
12367 goto error_ret_free_local
;
12369 /* Now examine each relocation. */
12370 irela
= internal_relocs
;
12371 irelaend
= irela
+ section
->reloc_count
;
12372 for (; irela
< irelaend
; irela
++)
12374 enum elf_ppc64_reloc_type r_type
;
12375 unsigned int r_indx
;
12376 enum ppc_stub_type stub_type
;
12377 struct ppc_stub_hash_entry
*stub_entry
;
12378 asection
*sym_sec
, *code_sec
;
12379 bfd_vma sym_value
, code_value
;
12380 bfd_vma destination
;
12381 unsigned long local_off
;
12382 bfd_boolean ok_dest
;
12383 struct ppc_link_hash_entry
*hash
;
12384 struct ppc_link_hash_entry
*fdh
;
12385 struct elf_link_hash_entry
*h
;
12386 Elf_Internal_Sym
*sym
;
12388 const asection
*id_sec
;
12389 struct _opd_sec_data
*opd
;
12390 struct plt_entry
*plt_ent
;
12392 r_type
= ELF64_R_TYPE (irela
->r_info
);
12393 r_indx
= ELF64_R_SYM (irela
->r_info
);
12395 if (r_type
>= R_PPC64_max
)
12397 bfd_set_error (bfd_error_bad_value
);
12398 goto error_ret_free_internal
;
12401 /* Only look for stubs on branch instructions. */
12402 if (r_type
!= R_PPC64_REL24
12403 && r_type
!= R_PPC64_REL14
12404 && r_type
!= R_PPC64_REL14_BRTAKEN
12405 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12408 /* Now determine the call target, its name, value,
12410 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12411 r_indx
, input_bfd
))
12412 goto error_ret_free_internal
;
12413 hash
= (struct ppc_link_hash_entry
*) h
;
12420 sym_value
= sym
->st_value
;
12421 if (sym_sec
!= NULL
12422 && sym_sec
->output_section
!= NULL
)
12425 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12426 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12428 sym_value
= hash
->elf
.root
.u
.def
.value
;
12429 if (sym_sec
->output_section
!= NULL
)
12432 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12433 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12435 /* Recognise an old ABI func code entry sym, and
12436 use the func descriptor sym instead if it is
12438 if (hash
->elf
.root
.root
.string
[0] == '.'
12439 && hash
->oh
!= NULL
)
12441 fdh
= ppc_follow_link (hash
->oh
);
12442 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12443 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12445 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12446 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12447 if (sym_sec
->output_section
!= NULL
)
12456 bfd_set_error (bfd_error_bad_value
);
12457 goto error_ret_free_internal
;
12464 sym_value
+= irela
->r_addend
;
12465 destination
= (sym_value
12466 + sym_sec
->output_offset
12467 + sym_sec
->output_section
->vma
);
12468 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12473 code_sec
= sym_sec
;
12474 code_value
= sym_value
;
12475 opd
= get_opd_info (sym_sec
);
12480 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12482 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12485 code_value
+= adjust
;
12486 sym_value
+= adjust
;
12488 dest
= opd_entry_value (sym_sec
, sym_value
,
12489 &code_sec
, &code_value
, FALSE
);
12490 if (dest
!= (bfd_vma
) -1)
12492 destination
= dest
;
12495 /* Fixup old ABI sym to point at code
12497 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12498 hash
->elf
.root
.u
.def
.section
= code_sec
;
12499 hash
->elf
.root
.u
.def
.value
= code_value
;
12504 /* Determine what (if any) linker stub is needed. */
12506 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12507 &plt_ent
, destination
,
12510 if (stub_type
!= ppc_stub_plt_call
)
12512 /* Check whether we need a TOC adjusting stub.
12513 Since the linker pastes together pieces from
12514 different object files when creating the
12515 _init and _fini functions, it may be that a
12516 call to what looks like a local sym is in
12517 fact a call needing a TOC adjustment. */
12518 if (code_sec
!= NULL
12519 && code_sec
->output_section
!= NULL
12520 && (htab
->sec_info
[code_sec
->id
].toc_off
12521 != htab
->sec_info
[section
->id
].toc_off
)
12522 && (code_sec
->has_toc_reloc
12523 || code_sec
->makes_toc_func_call
))
12524 stub_type
= ppc_stub_long_branch_r2off
;
12527 if (stub_type
== ppc_stub_none
)
12530 /* __tls_get_addr calls might be eliminated. */
12531 if (stub_type
!= ppc_stub_plt_call
12533 && (hash
== htab
->tls_get_addr
12534 || hash
== htab
->tls_get_addr_fd
)
12535 && section
->has_tls_reloc
12536 && irela
!= internal_relocs
)
12538 /* Get tls info. */
12539 unsigned char *tls_mask
;
12541 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12542 irela
- 1, input_bfd
))
12543 goto error_ret_free_internal
;
12544 if (*tls_mask
!= 0)
12548 if (stub_type
== ppc_stub_plt_call
12549 && irela
+ 1 < irelaend
12550 && irela
[1].r_offset
== irela
->r_offset
+ 4
12551 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12553 if (!tocsave_find (htab
, INSERT
,
12554 &local_syms
, irela
+ 1, input_bfd
))
12555 goto error_ret_free_internal
;
12557 else if (stub_type
== ppc_stub_plt_call
)
12558 stub_type
= ppc_stub_plt_call_r2save
;
12560 /* Support for grouping stub sections. */
12561 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12563 /* Get the name of this stub. */
12564 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12566 goto error_ret_free_internal
;
12568 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12569 stub_name
, FALSE
, FALSE
);
12570 if (stub_entry
!= NULL
)
12572 /* The proper stub has already been created. */
12574 if (stub_type
== ppc_stub_plt_call_r2save
)
12575 stub_entry
->stub_type
= stub_type
;
12579 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12580 if (stub_entry
== NULL
)
12583 error_ret_free_internal
:
12584 if (elf_section_data (section
)->relocs
== NULL
)
12585 free (internal_relocs
);
12586 error_ret_free_local
:
12587 if (local_syms
!= NULL
12588 && (symtab_hdr
->contents
12589 != (unsigned char *) local_syms
))
12594 stub_entry
->stub_type
= stub_type
;
12595 if (stub_type
!= ppc_stub_plt_call
12596 && stub_type
!= ppc_stub_plt_call_r2save
)
12598 stub_entry
->target_value
= code_value
;
12599 stub_entry
->target_section
= code_sec
;
12603 stub_entry
->target_value
= sym_value
;
12604 stub_entry
->target_section
= sym_sec
;
12606 stub_entry
->h
= hash
;
12607 stub_entry
->plt_ent
= plt_ent
;
12608 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12610 if (stub_entry
->h
!= NULL
)
12611 htab
->stub_globals
+= 1;
12614 /* We're done with the internal relocs, free them. */
12615 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12616 free (internal_relocs
);
12619 if (local_syms
!= NULL
12620 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12622 if (!info
->keep_memory
)
12625 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12629 /* We may have added some stubs. Find out the new size of the
12631 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12633 stub_sec
= stub_sec
->next
)
12634 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12636 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12637 || stub_sec
->rawsize
< stub_sec
->size
)
12638 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12639 stub_sec
->rawsize
= stub_sec
->size
;
12640 stub_sec
->size
= 0;
12641 stub_sec
->reloc_count
= 0;
12642 stub_sec
->flags
&= ~SEC_RELOC
;
12645 htab
->brlt
->size
= 0;
12646 htab
->brlt
->reloc_count
= 0;
12647 htab
->brlt
->flags
&= ~SEC_RELOC
;
12648 if (htab
->relbrlt
!= NULL
)
12649 htab
->relbrlt
->size
= 0;
12651 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12653 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12654 if (group
->needs_save_res
)
12655 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12657 if (info
->emitrelocations
12658 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12660 htab
->glink
->reloc_count
= 1;
12661 htab
->glink
->flags
|= SEC_RELOC
;
12664 if (htab
->glink_eh_frame
!= NULL
12665 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12666 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12668 size_t size
= 0, align
;
12670 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12672 stub_sec
= stub_sec
->next
)
12673 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12675 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12678 size
+= sizeof (glink_eh_frame_cie
);
12680 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12682 size
= (size
+ align
) & ~align
;
12683 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12684 htab
->glink_eh_frame
->size
= size
;
12687 if (htab
->params
->plt_stub_align
!= 0)
12688 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12690 stub_sec
= stub_sec
->next
)
12691 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12692 stub_sec
->size
= ((stub_sec
->size
12693 + (1 << htab
->params
->plt_stub_align
) - 1)
12694 & -(1 << htab
->params
->plt_stub_align
));
12696 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12698 stub_sec
= stub_sec
->next
)
12699 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12700 && stub_sec
->rawsize
!= stub_sec
->size
12701 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12702 || stub_sec
->rawsize
< stub_sec
->size
))
12705 if (stub_sec
== NULL
12706 && (htab
->glink_eh_frame
== NULL
12707 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12710 /* Ask the linker to do its stuff. */
12711 (*htab
->params
->layout_sections_again
) ();
12714 if (htab
->glink_eh_frame
!= NULL
12715 && htab
->glink_eh_frame
->size
!= 0)
12718 bfd_byte
*p
, *last_fde
;
12719 size_t last_fde_len
, size
, align
, pad
;
12720 asection
*stub_sec
;
12722 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12725 htab
->glink_eh_frame
->contents
= p
;
12728 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12729 /* CIE length (rewrite in case little-endian). */
12730 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12731 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12732 p
+= sizeof (glink_eh_frame_cie
);
12734 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12736 stub_sec
= stub_sec
->next
)
12737 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12742 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12745 val
= p
- htab
->glink_eh_frame
->contents
;
12746 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12748 /* Offset to stub section, written later. */
12750 /* stub section size. */
12751 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12753 /* Augmentation. */
12758 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12763 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12766 val
= p
- htab
->glink_eh_frame
->contents
;
12767 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12769 /* Offset to .glink, written later. */
12772 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12774 /* Augmentation. */
12777 *p
++ = DW_CFA_advance_loc
+ 1;
12778 *p
++ = DW_CFA_register
;
12780 *p
++ = htab
->opd_abi
? 12 : 0;
12781 *p
++ = DW_CFA_advance_loc
+ 4;
12782 *p
++ = DW_CFA_restore_extended
;
12785 /* Subsume any padding into the last FDE if user .eh_frame
12786 sections are aligned more than glink_eh_frame. Otherwise any
12787 zero padding will be seen as a terminator. */
12788 size
= p
- htab
->glink_eh_frame
->contents
;
12790 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12792 pad
= ((size
+ align
) & ~align
) - size
;
12793 htab
->glink_eh_frame
->size
= size
+ pad
;
12794 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12797 maybe_strip_output (info
, htab
->brlt
);
12798 if (htab
->glink_eh_frame
!= NULL
)
12799 maybe_strip_output (info
, htab
->glink_eh_frame
);
12804 /* Called after we have determined section placement. If sections
12805 move, we'll be called again. Provide a value for TOCstart. */
12808 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12811 bfd_vma TOCstart
, adjust
;
12815 struct elf_link_hash_entry
*h
;
12816 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12818 if (is_elf_hash_table (htab
)
12819 && htab
->hgot
!= NULL
)
12823 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12824 if (is_elf_hash_table (htab
))
12828 && h
->root
.type
== bfd_link_hash_defined
12829 && !h
->root
.linker_def
12830 && (!is_elf_hash_table (htab
)
12831 || h
->def_regular
))
12833 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12834 + h
->root
.u
.def
.section
->output_offset
12835 + h
->root
.u
.def
.section
->output_section
->vma
);
12836 _bfd_set_gp_value (obfd
, TOCstart
);
12841 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12842 order. The TOC starts where the first of these sections starts. */
12843 s
= bfd_get_section_by_name (obfd
, ".got");
12844 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12845 s
= bfd_get_section_by_name (obfd
, ".toc");
12846 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12847 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12848 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12849 s
= bfd_get_section_by_name (obfd
, ".plt");
12850 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12852 /* This may happen for
12853 o references to TOC base (SYM@toc / TOC[tc0]) without a
12855 o bad linker script
12856 o --gc-sections and empty TOC sections
12858 FIXME: Warn user? */
12860 /* Look for a likely section. We probably won't even be
12862 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12863 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12865 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12868 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12869 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12870 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12873 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12874 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12878 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12879 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12885 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12887 /* Force alignment. */
12888 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12889 TOCstart
-= adjust
;
12890 _bfd_set_gp_value (obfd
, TOCstart
);
12892 if (info
!= NULL
&& s
!= NULL
)
12894 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12898 if (htab
->elf
.hgot
!= NULL
)
12900 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12901 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12906 struct bfd_link_hash_entry
*bh
= NULL
;
12907 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12908 s
, TOC_BASE_OFF
- adjust
,
12909 NULL
, FALSE
, FALSE
, &bh
);
12915 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12916 write out any global entry stubs. */
12919 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12921 struct bfd_link_info
*info
;
12922 struct ppc_link_hash_table
*htab
;
12923 struct plt_entry
*pent
;
12926 if (h
->root
.type
== bfd_link_hash_indirect
)
12929 if (!h
->pointer_equality_needed
)
12932 if (h
->def_regular
)
12936 htab
= ppc_hash_table (info
);
12941 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12942 if (pent
->plt
.offset
!= (bfd_vma
) -1
12943 && pent
->addend
== 0)
12949 p
= s
->contents
+ h
->root
.u
.def
.value
;
12950 plt
= htab
->elf
.splt
;
12951 if (!htab
->elf
.dynamic_sections_created
12952 || h
->dynindx
== -1)
12953 plt
= htab
->elf
.iplt
;
12954 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12955 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12957 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12959 info
->callbacks
->einfo
12960 (_("%P: linkage table error against `%T'\n"),
12961 h
->root
.root
.string
);
12962 bfd_set_error (bfd_error_bad_value
);
12963 htab
->stub_error
= TRUE
;
12966 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12967 if (htab
->params
->emit_stub_syms
)
12969 size_t len
= strlen (h
->root
.root
.string
);
12970 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12975 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12976 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12979 if (h
->root
.type
== bfd_link_hash_new
)
12981 h
->root
.type
= bfd_link_hash_defined
;
12982 h
->root
.u
.def
.section
= s
;
12983 h
->root
.u
.def
.value
= p
- s
->contents
;
12984 h
->ref_regular
= 1;
12985 h
->def_regular
= 1;
12986 h
->ref_regular_nonweak
= 1;
12987 h
->forced_local
= 1;
12989 h
->root
.linker_def
= 1;
12993 if (PPC_HA (off
) != 0)
12995 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12998 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13000 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13002 bfd_put_32 (s
->owner
, BCTR
, p
);
13008 /* Build all the stubs associated with the current output file.
13009 The stubs are kept in a hash table attached to the main linker
13010 hash table. This function is called via gldelf64ppc_finish. */
13013 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13016 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13017 struct map_stub
*group
;
13018 asection
*stub_sec
;
13020 int stub_sec_count
= 0;
13025 /* Allocate memory to hold the linker stubs. */
13026 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13028 stub_sec
= stub_sec
->next
)
13029 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
13030 && stub_sec
->size
!= 0)
13032 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13033 if (stub_sec
->contents
== NULL
)
13035 stub_sec
->size
= 0;
13038 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13043 /* Build the .glink plt call stub. */
13044 if (htab
->params
->emit_stub_syms
)
13046 struct elf_link_hash_entry
*h
;
13047 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13048 TRUE
, FALSE
, FALSE
);
13051 if (h
->root
.type
== bfd_link_hash_new
)
13053 h
->root
.type
= bfd_link_hash_defined
;
13054 h
->root
.u
.def
.section
= htab
->glink
;
13055 h
->root
.u
.def
.value
= 8;
13056 h
->ref_regular
= 1;
13057 h
->def_regular
= 1;
13058 h
->ref_regular_nonweak
= 1;
13059 h
->forced_local
= 1;
13061 h
->root
.linker_def
= 1;
13064 plt0
= (htab
->elf
.splt
->output_section
->vma
13065 + htab
->elf
.splt
->output_offset
13067 if (info
->emitrelocations
)
13069 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13072 r
->r_offset
= (htab
->glink
->output_offset
13073 + htab
->glink
->output_section
->vma
);
13074 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13075 r
->r_addend
= plt0
;
13077 p
= htab
->glink
->contents
;
13078 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13079 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13083 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13085 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13087 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13089 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13091 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13093 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13095 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13097 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13099 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13101 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13106 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13108 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13110 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13112 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13114 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13116 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13118 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13120 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13122 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13124 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13126 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13128 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13131 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13133 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13135 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13139 /* Build the .glink lazy link call stubs. */
13141 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13147 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13152 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13154 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13159 bfd_put_32 (htab
->glink
->owner
,
13160 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13165 /* Build .glink global entry stubs. */
13166 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13167 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13170 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13172 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13174 if (htab
->brlt
->contents
== NULL
)
13177 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13179 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13180 htab
->relbrlt
->size
);
13181 if (htab
->relbrlt
->contents
== NULL
)
13185 /* Build the stubs as directed by the stub hash table. */
13186 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13188 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13189 if (group
->needs_save_res
)
13191 stub_sec
= group
->stub_sec
;
13192 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13194 if (htab
->params
->emit_stub_syms
)
13198 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13199 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13202 stub_sec
->size
+= htab
->sfpr
->size
;
13205 if (htab
->relbrlt
!= NULL
)
13206 htab
->relbrlt
->reloc_count
= 0;
13208 if (htab
->params
->plt_stub_align
!= 0)
13209 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13211 stub_sec
= stub_sec
->next
)
13212 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13213 stub_sec
->size
= ((stub_sec
->size
13214 + (1 << htab
->params
->plt_stub_align
) - 1)
13215 & -(1 << htab
->params
->plt_stub_align
));
13217 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13219 stub_sec
= stub_sec
->next
)
13220 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13222 stub_sec_count
+= 1;
13223 if (stub_sec
->rawsize
!= stub_sec
->size
13224 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13225 || stub_sec
->rawsize
< stub_sec
->size
))
13229 /* Note that the glink_eh_frame check here is not only testing that
13230 the generated size matched the calculated size but also that
13231 bfd_elf_discard_info didn't make any changes to the section. */
13232 if (stub_sec
!= NULL
13233 || (htab
->glink_eh_frame
!= NULL
13234 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13236 htab
->stub_error
= TRUE
;
13237 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13240 if (htab
->stub_error
)
13245 *stats
= bfd_malloc (500);
13246 if (*stats
== NULL
)
13249 sprintf (*stats
, _("linker stubs in %u group%s\n"
13251 " toc adjust %lu\n"
13252 " long branch %lu\n"
13253 " long toc adj %lu\n"
13255 " plt call toc %lu\n"
13256 " global entry %lu"),
13258 stub_sec_count
== 1 ? "" : "s",
13259 htab
->stub_count
[ppc_stub_long_branch
- 1],
13260 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13261 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13262 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13263 htab
->stub_count
[ppc_stub_plt_call
- 1],
13264 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13265 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13270 /* What to do when ld finds relocations against symbols defined in
13271 discarded sections. */
13273 static unsigned int
13274 ppc64_elf_action_discarded (asection
*sec
)
13276 if (strcmp (".opd", sec
->name
) == 0)
13279 if (strcmp (".toc", sec
->name
) == 0)
13282 if (strcmp (".toc1", sec
->name
) == 0)
13285 return _bfd_elf_default_action_discarded (sec
);
13288 /* The RELOCATE_SECTION function is called by the ELF backend linker
13289 to handle the relocations for a section.
13291 The relocs are always passed as Rela structures; if the section
13292 actually uses Rel structures, the r_addend field will always be
13295 This function is responsible for adjust the section contents as
13296 necessary, and (if using Rela relocs and generating a
13297 relocatable output file) adjusting the reloc addend as
13300 This function does not have to worry about setting the reloc
13301 address or the reloc symbol index.
13303 LOCAL_SYMS is a pointer to the swapped in local symbols.
13305 LOCAL_SECTIONS is an array giving the section in the input file
13306 corresponding to the st_shndx field of each local symbol.
13308 The global hash table entry for the global symbols can be found
13309 via elf_sym_hashes (input_bfd).
13311 When generating relocatable output, this function must handle
13312 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13313 going to be the section symbol corresponding to the output
13314 section, which means that the addend must be adjusted
13318 ppc64_elf_relocate_section (bfd
*output_bfd
,
13319 struct bfd_link_info
*info
,
13321 asection
*input_section
,
13322 bfd_byte
*contents
,
13323 Elf_Internal_Rela
*relocs
,
13324 Elf_Internal_Sym
*local_syms
,
13325 asection
**local_sections
)
13327 struct ppc_link_hash_table
*htab
;
13328 Elf_Internal_Shdr
*symtab_hdr
;
13329 struct elf_link_hash_entry
**sym_hashes
;
13330 Elf_Internal_Rela
*rel
;
13331 Elf_Internal_Rela
*wrel
;
13332 Elf_Internal_Rela
*relend
;
13333 Elf_Internal_Rela outrel
;
13335 struct got_entry
**local_got_ents
;
13337 bfd_boolean ret
= TRUE
;
13338 bfd_boolean is_opd
;
13339 /* Assume 'at' branch hints. */
13340 bfd_boolean is_isa_v2
= TRUE
;
13341 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13343 /* Initialize howto table if needed. */
13344 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13347 htab
= ppc_hash_table (info
);
13351 /* Don't relocate stub sections. */
13352 if (input_section
->owner
== htab
->params
->stub_bfd
)
13355 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13357 local_got_ents
= elf_local_got_ents (input_bfd
);
13358 TOCstart
= elf_gp (output_bfd
);
13359 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13360 sym_hashes
= elf_sym_hashes (input_bfd
);
13361 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13363 rel
= wrel
= relocs
;
13364 relend
= relocs
+ input_section
->reloc_count
;
13365 for (; rel
< relend
; wrel
++, rel
++)
13367 enum elf_ppc64_reloc_type r_type
;
13369 bfd_reloc_status_type r
;
13370 Elf_Internal_Sym
*sym
;
13372 struct elf_link_hash_entry
*h_elf
;
13373 struct ppc_link_hash_entry
*h
;
13374 struct ppc_link_hash_entry
*fdh
;
13375 const char *sym_name
;
13376 unsigned long r_symndx
, toc_symndx
;
13377 bfd_vma toc_addend
;
13378 unsigned char tls_mask
, tls_gd
, tls_type
;
13379 unsigned char sym_type
;
13380 bfd_vma relocation
;
13381 bfd_boolean unresolved_reloc
;
13382 bfd_boolean warned
;
13383 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13386 struct ppc_stub_hash_entry
*stub_entry
;
13387 bfd_vma max_br_offset
;
13389 Elf_Internal_Rela orig_rel
;
13390 reloc_howto_type
*howto
;
13391 struct reloc_howto_struct alt_howto
;
13396 r_type
= ELF64_R_TYPE (rel
->r_info
);
13397 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13399 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13400 symbol of the previous ADDR64 reloc. The symbol gives us the
13401 proper TOC base to use. */
13402 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13404 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13406 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13412 unresolved_reloc
= FALSE
;
13415 if (r_symndx
< symtab_hdr
->sh_info
)
13417 /* It's a local symbol. */
13418 struct _opd_sec_data
*opd
;
13420 sym
= local_syms
+ r_symndx
;
13421 sec
= local_sections
[r_symndx
];
13422 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13423 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13424 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13425 opd
= get_opd_info (sec
);
13426 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13428 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13434 /* If this is a relocation against the opd section sym
13435 and we have edited .opd, adjust the reloc addend so
13436 that ld -r and ld --emit-relocs output is correct.
13437 If it is a reloc against some other .opd symbol,
13438 then the symbol value will be adjusted later. */
13439 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13440 rel
->r_addend
+= adjust
;
13442 relocation
+= adjust
;
13448 bfd_boolean ignored
;
13450 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13451 r_symndx
, symtab_hdr
, sym_hashes
,
13452 h_elf
, sec
, relocation
,
13453 unresolved_reloc
, warned
, ignored
);
13454 sym_name
= h_elf
->root
.root
.string
;
13455 sym_type
= h_elf
->type
;
13457 && sec
->owner
== output_bfd
13458 && strcmp (sec
->name
, ".opd") == 0)
13460 /* This is a symbol defined in a linker script. All
13461 such are defined in output sections, even those
13462 defined by simple assignment from a symbol defined in
13463 an input section. Transfer the symbol to an
13464 appropriate input .opd section, so that a branch to
13465 this symbol will be mapped to the location specified
13466 by the opd entry. */
13467 struct bfd_link_order
*lo
;
13468 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13469 if (lo
->type
== bfd_indirect_link_order
)
13471 asection
*isec
= lo
->u
.indirect
.section
;
13472 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13473 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13476 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13477 h_elf
->root
.u
.def
.section
= isec
;
13484 h
= (struct ppc_link_hash_entry
*) h_elf
;
13486 if (sec
!= NULL
&& discarded_section (sec
))
13488 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13489 input_bfd
, input_section
,
13490 contents
+ rel
->r_offset
);
13491 wrel
->r_offset
= rel
->r_offset
;
13493 wrel
->r_addend
= 0;
13495 /* For ld -r, remove relocations in debug sections against
13496 sections defined in discarded sections. Not done for
13497 non-debug to preserve relocs in .eh_frame which the
13498 eh_frame editing code expects to be present. */
13499 if (bfd_link_relocatable (info
)
13500 && (input_section
->flags
& SEC_DEBUGGING
))
13506 if (bfd_link_relocatable (info
))
13509 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13511 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13512 sec
= bfd_abs_section_ptr
;
13513 unresolved_reloc
= FALSE
;
13516 /* TLS optimizations. Replace instruction sequences and relocs
13517 based on information we collected in tls_optimize. We edit
13518 RELOCS so that --emit-relocs will output something sensible
13519 for the final instruction stream. */
13524 tls_mask
= h
->tls_mask
;
13525 else if (local_got_ents
!= NULL
)
13527 struct plt_entry
**local_plt
= (struct plt_entry
**)
13528 (local_got_ents
+ symtab_hdr
->sh_info
);
13529 unsigned char *lgot_masks
= (unsigned char *)
13530 (local_plt
+ symtab_hdr
->sh_info
);
13531 tls_mask
= lgot_masks
[r_symndx
];
13534 && (r_type
== R_PPC64_TLS
13535 || r_type
== R_PPC64_TLSGD
13536 || r_type
== R_PPC64_TLSLD
))
13538 /* Check for toc tls entries. */
13539 unsigned char *toc_tls
;
13541 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13542 &local_syms
, rel
, input_bfd
))
13546 tls_mask
= *toc_tls
;
13549 /* Check that tls relocs are used with tls syms, and non-tls
13550 relocs are used with non-tls syms. */
13551 if (r_symndx
!= STN_UNDEF
13552 && r_type
!= R_PPC64_NONE
13554 || h
->elf
.root
.type
== bfd_link_hash_defined
13555 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13556 && (IS_PPC64_TLS_RELOC (r_type
)
13557 != (sym_type
== STT_TLS
13558 || (sym_type
== STT_SECTION
13559 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13562 && (r_type
== R_PPC64_TLS
13563 || r_type
== R_PPC64_TLSGD
13564 || r_type
== R_PPC64_TLSLD
))
13565 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13568 info
->callbacks
->einfo
13569 (!IS_PPC64_TLS_RELOC (r_type
)
13570 /* xgettext:c-format */
13571 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13572 /* xgettext:c-format */
13573 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13574 input_bfd
, input_section
, rel
->r_offset
,
13575 ppc64_elf_howto_table
[r_type
]->name
,
13579 /* Ensure reloc mapping code below stays sane. */
13580 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13581 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13582 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13583 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13584 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13585 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13586 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13587 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13588 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13589 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13597 case R_PPC64_LO_DS_OPT
:
13598 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13599 if ((insn
& (0x3f << 26)) != 58u << 26)
13601 insn
+= (14u << 26) - (58u << 26);
13602 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13603 r_type
= R_PPC64_TOC16_LO
;
13604 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13607 case R_PPC64_TOC16
:
13608 case R_PPC64_TOC16_LO
:
13609 case R_PPC64_TOC16_DS
:
13610 case R_PPC64_TOC16_LO_DS
:
13612 /* Check for toc tls entries. */
13613 unsigned char *toc_tls
;
13616 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13617 &local_syms
, rel
, input_bfd
);
13623 tls_mask
= *toc_tls
;
13624 if (r_type
== R_PPC64_TOC16_DS
13625 || r_type
== R_PPC64_TOC16_LO_DS
)
13628 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13633 /* If we found a GD reloc pair, then we might be
13634 doing a GD->IE transition. */
13637 tls_gd
= TLS_TPRELGD
;
13638 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13641 else if (retval
== 3)
13643 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13651 case R_PPC64_GOT_TPREL16_HI
:
13652 case R_PPC64_GOT_TPREL16_HA
:
13654 && (tls_mask
& TLS_TPREL
) == 0)
13656 rel
->r_offset
-= d_offset
;
13657 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13658 r_type
= R_PPC64_NONE
;
13659 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13663 case R_PPC64_GOT_TPREL16_DS
:
13664 case R_PPC64_GOT_TPREL16_LO_DS
:
13666 && (tls_mask
& TLS_TPREL
) == 0)
13669 insn
= bfd_get_32 (input_bfd
,
13670 contents
+ rel
->r_offset
- d_offset
);
13672 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13673 bfd_put_32 (input_bfd
, insn
,
13674 contents
+ rel
->r_offset
- d_offset
);
13675 r_type
= R_PPC64_TPREL16_HA
;
13676 if (toc_symndx
!= 0)
13678 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13679 rel
->r_addend
= toc_addend
;
13680 /* We changed the symbol. Start over in order to
13681 get h, sym, sec etc. right. */
13685 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13691 && (tls_mask
& TLS_TPREL
) == 0)
13693 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13694 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13697 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13698 /* Was PPC64_TLS which sits on insn boundary, now
13699 PPC64_TPREL16_LO which is at low-order half-word. */
13700 rel
->r_offset
+= d_offset
;
13701 r_type
= R_PPC64_TPREL16_LO
;
13702 if (toc_symndx
!= 0)
13704 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13705 rel
->r_addend
= toc_addend
;
13706 /* We changed the symbol. Start over in order to
13707 get h, sym, sec etc. right. */
13711 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13715 case R_PPC64_GOT_TLSGD16_HI
:
13716 case R_PPC64_GOT_TLSGD16_HA
:
13717 tls_gd
= TLS_TPRELGD
;
13718 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13722 case R_PPC64_GOT_TLSLD16_HI
:
13723 case R_PPC64_GOT_TLSLD16_HA
:
13724 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13727 if ((tls_mask
& tls_gd
) != 0)
13728 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13729 + R_PPC64_GOT_TPREL16_DS
);
13732 rel
->r_offset
-= d_offset
;
13733 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13734 r_type
= R_PPC64_NONE
;
13736 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13740 case R_PPC64_GOT_TLSGD16
:
13741 case R_PPC64_GOT_TLSGD16_LO
:
13742 tls_gd
= TLS_TPRELGD
;
13743 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13747 case R_PPC64_GOT_TLSLD16
:
13748 case R_PPC64_GOT_TLSLD16_LO
:
13749 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13751 unsigned int insn1
, insn2
, insn3
;
13755 offset
= (bfd_vma
) -1;
13756 /* If not using the newer R_PPC64_TLSGD/LD to mark
13757 __tls_get_addr calls, we must trust that the call
13758 stays with its arg setup insns, ie. that the next
13759 reloc is the __tls_get_addr call associated with
13760 the current reloc. Edit both insns. */
13761 if (input_section
->has_tls_get_addr_call
13762 && rel
+ 1 < relend
13763 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13764 htab
->tls_get_addr
,
13765 htab
->tls_get_addr_fd
))
13766 offset
= rel
[1].r_offset
;
13767 /* We read the low GOT_TLS (or TOC16) insn because we
13768 need to keep the destination reg. It may be
13769 something other than the usual r3, and moved to r3
13770 before the call by intervening code. */
13771 insn1
= bfd_get_32 (input_bfd
,
13772 contents
+ rel
->r_offset
- d_offset
);
13773 if ((tls_mask
& tls_gd
) != 0)
13776 insn1
&= (0x1f << 21) | (0x1f << 16);
13777 insn1
|= 58 << 26; /* ld */
13778 insn2
= 0x7c636a14; /* add 3,3,13 */
13779 if (offset
!= (bfd_vma
) -1)
13780 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13781 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13782 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13783 + R_PPC64_GOT_TPREL16_DS
);
13785 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13786 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13791 insn1
&= 0x1f << 21;
13792 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13793 insn2
= 0x38630000; /* addi 3,3,0 */
13796 /* Was an LD reloc. */
13798 sec
= local_sections
[toc_symndx
];
13800 r_symndx
< symtab_hdr
->sh_info
;
13802 if (local_sections
[r_symndx
] == sec
)
13804 if (r_symndx
>= symtab_hdr
->sh_info
)
13805 r_symndx
= STN_UNDEF
;
13806 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13807 if (r_symndx
!= STN_UNDEF
)
13808 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13809 + sec
->output_offset
13810 + sec
->output_section
->vma
);
13812 else if (toc_symndx
!= 0)
13814 r_symndx
= toc_symndx
;
13815 rel
->r_addend
= toc_addend
;
13817 r_type
= R_PPC64_TPREL16_HA
;
13818 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13819 if (offset
!= (bfd_vma
) -1)
13821 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13822 R_PPC64_TPREL16_LO
);
13823 rel
[1].r_offset
= offset
+ d_offset
;
13824 rel
[1].r_addend
= rel
->r_addend
;
13827 bfd_put_32 (input_bfd
, insn1
,
13828 contents
+ rel
->r_offset
- d_offset
);
13829 if (offset
!= (bfd_vma
) -1)
13831 insn3
= bfd_get_32 (input_bfd
,
13832 contents
+ offset
+ 4);
13834 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13836 rel
[1].r_offset
+= 4;
13837 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13840 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13842 if ((tls_mask
& tls_gd
) == 0
13843 && (tls_gd
== 0 || toc_symndx
!= 0))
13845 /* We changed the symbol. Start over in order
13846 to get h, sym, sec etc. right. */
13852 case R_PPC64_TLSGD
:
13853 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13855 unsigned int insn2
, insn3
;
13856 bfd_vma offset
= rel
->r_offset
;
13858 if ((tls_mask
& TLS_TPRELGD
) != 0)
13861 r_type
= R_PPC64_NONE
;
13862 insn2
= 0x7c636a14; /* add 3,3,13 */
13867 if (toc_symndx
!= 0)
13869 r_symndx
= toc_symndx
;
13870 rel
->r_addend
= toc_addend
;
13872 r_type
= R_PPC64_TPREL16_LO
;
13873 rel
->r_offset
= offset
+ d_offset
;
13874 insn2
= 0x38630000; /* addi 3,3,0 */
13876 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13877 /* Zap the reloc on the _tls_get_addr call too. */
13878 BFD_ASSERT (offset
== rel
[1].r_offset
);
13879 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13880 insn3
= bfd_get_32 (input_bfd
,
13881 contents
+ offset
+ 4);
13883 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13885 rel
->r_offset
+= 4;
13886 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13889 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13890 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13895 case R_PPC64_TLSLD
:
13896 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13898 unsigned int insn2
, insn3
;
13899 bfd_vma offset
= rel
->r_offset
;
13902 sec
= local_sections
[toc_symndx
];
13904 r_symndx
< symtab_hdr
->sh_info
;
13906 if (local_sections
[r_symndx
] == sec
)
13908 if (r_symndx
>= symtab_hdr
->sh_info
)
13909 r_symndx
= STN_UNDEF
;
13910 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13911 if (r_symndx
!= STN_UNDEF
)
13912 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13913 + sec
->output_offset
13914 + sec
->output_section
->vma
);
13916 r_type
= R_PPC64_TPREL16_LO
;
13917 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13918 rel
->r_offset
= offset
+ d_offset
;
13919 /* Zap the reloc on the _tls_get_addr call too. */
13920 BFD_ASSERT (offset
== rel
[1].r_offset
);
13921 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13922 insn2
= 0x38630000; /* addi 3,3,0 */
13923 insn3
= bfd_get_32 (input_bfd
,
13924 contents
+ offset
+ 4);
13926 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13928 rel
->r_offset
+= 4;
13929 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13932 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13937 case R_PPC64_DTPMOD64
:
13938 if (rel
+ 1 < relend
13939 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13940 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13942 if ((tls_mask
& TLS_GD
) == 0)
13944 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13945 if ((tls_mask
& TLS_TPRELGD
) != 0)
13946 r_type
= R_PPC64_TPREL64
;
13949 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13950 r_type
= R_PPC64_NONE
;
13952 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13957 if ((tls_mask
& TLS_LD
) == 0)
13959 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13960 r_type
= R_PPC64_NONE
;
13961 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13966 case R_PPC64_TPREL64
:
13967 if ((tls_mask
& TLS_TPREL
) == 0)
13969 r_type
= R_PPC64_NONE
;
13970 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13974 case R_PPC64_ENTRY
:
13975 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13976 if (!bfd_link_pic (info
)
13977 && !info
->traditional_format
13978 && relocation
+ 0x80008000 <= 0xffffffff)
13980 unsigned int insn1
, insn2
;
13982 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13983 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13984 if ((insn1
& ~0xfffc) == LD_R2_0R12
13985 && insn2
== ADD_R2_R2_R12
)
13987 bfd_put_32 (input_bfd
,
13988 LIS_R2
+ PPC_HA (relocation
),
13989 contents
+ rel
->r_offset
);
13990 bfd_put_32 (input_bfd
,
13991 ADDI_R2_R2
+ PPC_LO (relocation
),
13992 contents
+ rel
->r_offset
+ 4);
13997 relocation
-= (rel
->r_offset
13998 + input_section
->output_offset
13999 + input_section
->output_section
->vma
);
14000 if (relocation
+ 0x80008000 <= 0xffffffff)
14002 unsigned int insn1
, insn2
;
14004 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14005 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14006 if ((insn1
& ~0xfffc) == LD_R2_0R12
14007 && insn2
== ADD_R2_R2_R12
)
14009 bfd_put_32 (input_bfd
,
14010 ADDIS_R2_R12
+ PPC_HA (relocation
),
14011 contents
+ rel
->r_offset
);
14012 bfd_put_32 (input_bfd
,
14013 ADDI_R2_R2
+ PPC_LO (relocation
),
14014 contents
+ rel
->r_offset
+ 4);
14020 case R_PPC64_REL16_HA
:
14021 /* If we are generating a non-PIC executable, edit
14022 . 0: addis 2,12,.TOC.-0b@ha
14023 . addi 2,2,.TOC.-0b@l
14024 used by ELFv2 global entry points to set up r2, to
14027 if .TOC. is in range. */
14028 if (!bfd_link_pic (info
)
14029 && !info
->traditional_format
14031 && rel
->r_addend
== d_offset
14032 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14033 && rel
+ 1 < relend
14034 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14035 && rel
[1].r_offset
== rel
->r_offset
+ 4
14036 && rel
[1].r_addend
== rel
->r_addend
+ 4
14037 && relocation
+ 0x80008000 <= 0xffffffff)
14039 unsigned int insn1
, insn2
;
14040 bfd_vma offset
= rel
->r_offset
- d_offset
;
14041 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14042 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14043 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14044 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14046 r_type
= R_PPC64_ADDR16_HA
;
14047 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14048 rel
->r_addend
-= d_offset
;
14049 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14050 rel
[1].r_addend
-= d_offset
+ 4;
14051 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14057 /* Handle other relocations that tweak non-addend part of insn. */
14059 max_br_offset
= 1 << 25;
14060 addend
= rel
->r_addend
;
14061 reloc_dest
= DEST_NORMAL
;
14067 case R_PPC64_TOCSAVE
:
14068 if (relocation
+ addend
== (rel
->r_offset
14069 + input_section
->output_offset
14070 + input_section
->output_section
->vma
)
14071 && tocsave_find (htab
, NO_INSERT
,
14072 &local_syms
, rel
, input_bfd
))
14074 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14076 || insn
== CROR_151515
|| insn
== CROR_313131
)
14077 bfd_put_32 (input_bfd
,
14078 STD_R2_0R1
+ STK_TOC (htab
),
14079 contents
+ rel
->r_offset
);
14083 /* Branch taken prediction relocations. */
14084 case R_PPC64_ADDR14_BRTAKEN
:
14085 case R_PPC64_REL14_BRTAKEN
:
14086 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14087 /* Fall through. */
14089 /* Branch not taken prediction relocations. */
14090 case R_PPC64_ADDR14_BRNTAKEN
:
14091 case R_PPC64_REL14_BRNTAKEN
:
14092 insn
|= bfd_get_32 (input_bfd
,
14093 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14094 /* Fall through. */
14096 case R_PPC64_REL14
:
14097 max_br_offset
= 1 << 15;
14098 /* Fall through. */
14100 case R_PPC64_REL24
:
14101 /* Calls to functions with a different TOC, such as calls to
14102 shared objects, need to alter the TOC pointer. This is
14103 done using a linkage stub. A REL24 branching to these
14104 linkage stubs needs to be followed by a nop, as the nop
14105 will be replaced with an instruction to restore the TOC
14110 && h
->oh
->is_func_descriptor
)
14111 fdh
= ppc_follow_link (h
->oh
);
14112 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14114 if (stub_entry
!= NULL
14115 && (stub_entry
->stub_type
== ppc_stub_plt_call
14116 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14117 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14118 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14120 bfd_boolean can_plt_call
= FALSE
;
14122 /* All of these stubs will modify r2, so there must be a
14123 branch and link followed by a nop. The nop is
14124 replaced by an insn to restore r2. */
14125 if (rel
->r_offset
+ 8 <= input_section
->size
)
14129 br
= bfd_get_32 (input_bfd
,
14130 contents
+ rel
->r_offset
);
14135 nop
= bfd_get_32 (input_bfd
,
14136 contents
+ rel
->r_offset
+ 4);
14138 || nop
== CROR_151515
|| nop
== CROR_313131
)
14141 && (h
== htab
->tls_get_addr_fd
14142 || h
== htab
->tls_get_addr
)
14143 && htab
->params
->tls_get_addr_opt
)
14145 /* Special stub used, leave nop alone. */
14148 bfd_put_32 (input_bfd
,
14149 LD_R2_0R1
+ STK_TOC (htab
),
14150 contents
+ rel
->r_offset
+ 4);
14151 can_plt_call
= TRUE
;
14156 if (!can_plt_call
&& h
!= NULL
)
14158 const char *name
= h
->elf
.root
.root
.string
;
14163 if (strncmp (name
, "__libc_start_main", 17) == 0
14164 && (name
[17] == 0 || name
[17] == '@'))
14166 /* Allow crt1 branch to go via a toc adjusting
14167 stub. Other calls that never return could do
14168 the same, if we could detect such. */
14169 can_plt_call
= TRUE
;
14175 /* g++ as of 20130507 emits self-calls without a
14176 following nop. This is arguably wrong since we
14177 have conflicting information. On the one hand a
14178 global symbol and on the other a local call
14179 sequence, but don't error for this special case.
14180 It isn't possible to cheaply verify we have
14181 exactly such a call. Allow all calls to the same
14183 asection
*code_sec
= sec
;
14185 if (get_opd_info (sec
) != NULL
)
14187 bfd_vma off
= (relocation
+ addend
14188 - sec
->output_section
->vma
14189 - sec
->output_offset
);
14191 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14193 if (code_sec
== input_section
)
14194 can_plt_call
= TRUE
;
14199 if (stub_entry
->stub_type
== ppc_stub_plt_call
14200 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14201 info
->callbacks
->einfo
14202 /* xgettext:c-format */
14203 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14204 "recompile with -fPIC\n"),
14205 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14207 info
->callbacks
->einfo
14208 /* xgettext:c-format */
14209 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14210 "(-mcmodel=small toc adjust stub)\n"),
14211 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14213 bfd_set_error (bfd_error_bad_value
);
14218 && (stub_entry
->stub_type
== ppc_stub_plt_call
14219 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14220 unresolved_reloc
= FALSE
;
14223 if ((stub_entry
== NULL
14224 || stub_entry
->stub_type
== ppc_stub_long_branch
14225 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14226 && get_opd_info (sec
) != NULL
)
14228 /* The branch destination is the value of the opd entry. */
14229 bfd_vma off
= (relocation
+ addend
14230 - sec
->output_section
->vma
14231 - sec
->output_offset
);
14232 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14233 if (dest
!= (bfd_vma
) -1)
14237 reloc_dest
= DEST_OPD
;
14241 /* If the branch is out of reach we ought to have a long
14243 from
= (rel
->r_offset
14244 + input_section
->output_offset
14245 + input_section
->output_section
->vma
);
14247 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14251 if (stub_entry
!= NULL
14252 && (stub_entry
->stub_type
== ppc_stub_long_branch
14253 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14254 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14255 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14256 || (relocation
+ addend
- from
+ max_br_offset
14257 < 2 * max_br_offset
)))
14258 /* Don't use the stub if this branch is in range. */
14261 if (stub_entry
!= NULL
)
14263 /* Munge up the value and addend so that we call the stub
14264 rather than the procedure directly. */
14265 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14267 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14268 relocation
+= (stub_sec
->output_offset
14269 + stub_sec
->output_section
->vma
14270 + stub_sec
->size
- htab
->sfpr
->size
14271 - htab
->sfpr
->output_offset
14272 - htab
->sfpr
->output_section
->vma
);
14274 relocation
= (stub_entry
->stub_offset
14275 + stub_sec
->output_offset
14276 + stub_sec
->output_section
->vma
);
14278 reloc_dest
= DEST_STUB
;
14280 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14281 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14282 && (ALWAYS_EMIT_R2SAVE
14283 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14284 && rel
+ 1 < relend
14285 && rel
[1].r_offset
== rel
->r_offset
+ 4
14286 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14294 /* Set 'a' bit. This is 0b00010 in BO field for branch
14295 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14296 for branch on CTR insns (BO == 1a00t or 1a01t). */
14297 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14298 insn
|= 0x02 << 21;
14299 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14300 insn
|= 0x08 << 21;
14306 /* Invert 'y' bit if not the default. */
14307 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14308 insn
^= 0x01 << 21;
14311 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14314 /* NOP out calls to undefined weak functions.
14315 We can thus call a weak function without first
14316 checking whether the function is defined. */
14318 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14319 && h
->elf
.dynindx
== -1
14320 && r_type
== R_PPC64_REL24
14324 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14330 /* Set `addend'. */
14335 info
->callbacks
->einfo
14336 /* xgettext:c-format */
14337 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14338 input_bfd
, (int) r_type
, sym_name
);
14340 bfd_set_error (bfd_error_bad_value
);
14346 case R_PPC64_TLSGD
:
14347 case R_PPC64_TLSLD
:
14348 case R_PPC64_TOCSAVE
:
14349 case R_PPC64_GNU_VTINHERIT
:
14350 case R_PPC64_GNU_VTENTRY
:
14351 case R_PPC64_ENTRY
:
14354 /* GOT16 relocations. Like an ADDR16 using the symbol's
14355 address in the GOT as relocation value instead of the
14356 symbol's value itself. Also, create a GOT entry for the
14357 symbol and put the symbol value there. */
14358 case R_PPC64_GOT_TLSGD16
:
14359 case R_PPC64_GOT_TLSGD16_LO
:
14360 case R_PPC64_GOT_TLSGD16_HI
:
14361 case R_PPC64_GOT_TLSGD16_HA
:
14362 tls_type
= TLS_TLS
| TLS_GD
;
14365 case R_PPC64_GOT_TLSLD16
:
14366 case R_PPC64_GOT_TLSLD16_LO
:
14367 case R_PPC64_GOT_TLSLD16_HI
:
14368 case R_PPC64_GOT_TLSLD16_HA
:
14369 tls_type
= TLS_TLS
| TLS_LD
;
14372 case R_PPC64_GOT_TPREL16_DS
:
14373 case R_PPC64_GOT_TPREL16_LO_DS
:
14374 case R_PPC64_GOT_TPREL16_HI
:
14375 case R_PPC64_GOT_TPREL16_HA
:
14376 tls_type
= TLS_TLS
| TLS_TPREL
;
14379 case R_PPC64_GOT_DTPREL16_DS
:
14380 case R_PPC64_GOT_DTPREL16_LO_DS
:
14381 case R_PPC64_GOT_DTPREL16_HI
:
14382 case R_PPC64_GOT_DTPREL16_HA
:
14383 tls_type
= TLS_TLS
| TLS_DTPREL
;
14386 case R_PPC64_GOT16
:
14387 case R_PPC64_GOT16_LO
:
14388 case R_PPC64_GOT16_HI
:
14389 case R_PPC64_GOT16_HA
:
14390 case R_PPC64_GOT16_DS
:
14391 case R_PPC64_GOT16_LO_DS
:
14394 /* Relocation is to the entry for this symbol in the global
14399 unsigned long indx
= 0;
14400 struct got_entry
*ent
;
14402 if (tls_type
== (TLS_TLS
| TLS_LD
)
14404 || !h
->elf
.def_dynamic
))
14405 ent
= ppc64_tlsld_got (input_bfd
);
14411 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14412 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
),
14414 || (bfd_link_pic (info
)
14415 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14416 /* This is actually a static link, or it is a
14417 -Bsymbolic link and the symbol is defined
14418 locally, or the symbol was forced to be local
14419 because of a version file. */
14423 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14424 indx
= h
->elf
.dynindx
;
14425 unresolved_reloc
= FALSE
;
14427 ent
= h
->elf
.got
.glist
;
14431 if (local_got_ents
== NULL
)
14433 ent
= local_got_ents
[r_symndx
];
14436 for (; ent
!= NULL
; ent
= ent
->next
)
14437 if (ent
->addend
== orig_rel
.r_addend
14438 && ent
->owner
== input_bfd
14439 && ent
->tls_type
== tls_type
)
14445 if (ent
->is_indirect
)
14446 ent
= ent
->got
.ent
;
14447 offp
= &ent
->got
.offset
;
14448 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14452 /* The offset must always be a multiple of 8. We use the
14453 least significant bit to record whether we have already
14454 processed this entry. */
14456 if ((off
& 1) != 0)
14460 /* Generate relocs for the dynamic linker, except in
14461 the case of TLSLD where we'll use one entry per
14469 ? h
->elf
.type
== STT_GNU_IFUNC
14470 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14472 relgot
= htab
->elf
.irelplt
;
14473 else if ((bfd_link_pic (info
) || indx
!= 0)
14475 || (tls_type
== (TLS_TLS
| TLS_LD
)
14476 && !h
->elf
.def_dynamic
)
14477 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14478 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14479 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14480 if (relgot
!= NULL
)
14482 outrel
.r_offset
= (got
->output_section
->vma
14483 + got
->output_offset
14485 outrel
.r_addend
= addend
;
14486 if (tls_type
& (TLS_LD
| TLS_GD
))
14488 outrel
.r_addend
= 0;
14489 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14490 if (tls_type
== (TLS_TLS
| TLS_GD
))
14492 loc
= relgot
->contents
;
14493 loc
+= (relgot
->reloc_count
++
14494 * sizeof (Elf64_External_Rela
));
14495 bfd_elf64_swap_reloca_out (output_bfd
,
14497 outrel
.r_offset
+= 8;
14498 outrel
.r_addend
= addend
;
14500 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14503 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14504 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14505 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14506 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14507 else if (indx
!= 0)
14508 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14512 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14514 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14516 /* Write the .got section contents for the sake
14518 loc
= got
->contents
+ off
;
14519 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14523 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14525 outrel
.r_addend
+= relocation
;
14526 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14528 if (htab
->elf
.tls_sec
== NULL
)
14529 outrel
.r_addend
= 0;
14531 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14534 loc
= relgot
->contents
;
14535 loc
+= (relgot
->reloc_count
++
14536 * sizeof (Elf64_External_Rela
));
14537 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14540 /* Init the .got section contents here if we're not
14541 emitting a reloc. */
14544 relocation
+= addend
;
14545 if (tls_type
== (TLS_TLS
| TLS_LD
))
14547 else if (tls_type
!= 0)
14549 if (htab
->elf
.tls_sec
== NULL
)
14553 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14554 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14555 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14558 if (tls_type
== (TLS_TLS
| TLS_GD
))
14560 bfd_put_64 (output_bfd
, relocation
,
14561 got
->contents
+ off
+ 8);
14566 bfd_put_64 (output_bfd
, relocation
,
14567 got
->contents
+ off
);
14571 if (off
>= (bfd_vma
) -2)
14574 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14575 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14579 case R_PPC64_PLT16_HA
:
14580 case R_PPC64_PLT16_HI
:
14581 case R_PPC64_PLT16_LO
:
14582 case R_PPC64_PLT32
:
14583 case R_PPC64_PLT64
:
14584 /* Relocation is to the entry for this symbol in the
14585 procedure linkage table. */
14587 struct plt_entry
**plt_list
= NULL
;
14589 plt_list
= &h
->elf
.plt
.plist
;
14590 else if (local_got_ents
!= NULL
)
14592 struct plt_entry
**local_plt
= (struct plt_entry
**)
14593 (local_got_ents
+ symtab_hdr
->sh_info
);
14594 unsigned char *local_got_tls_masks
= (unsigned char *)
14595 (local_plt
+ symtab_hdr
->sh_info
);
14596 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14597 plt_list
= local_plt
+ r_symndx
;
14601 struct plt_entry
*ent
;
14603 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14604 if (ent
->plt
.offset
!= (bfd_vma
) -1
14605 && ent
->addend
== orig_rel
.r_addend
)
14609 plt
= htab
->elf
.splt
;
14610 if (!htab
->elf
.dynamic_sections_created
14612 || h
->elf
.dynindx
== -1)
14613 plt
= htab
->elf
.iplt
;
14614 relocation
= (plt
->output_section
->vma
14615 + plt
->output_offset
14616 + ent
->plt
.offset
);
14618 unresolved_reloc
= FALSE
;
14626 /* Relocation value is TOC base. */
14627 relocation
= TOCstart
;
14628 if (r_symndx
== STN_UNDEF
)
14629 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14630 else if (unresolved_reloc
)
14632 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14633 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14635 unresolved_reloc
= TRUE
;
14638 /* TOC16 relocs. We want the offset relative to the TOC base,
14639 which is the address of the start of the TOC plus 0x8000.
14640 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14642 case R_PPC64_TOC16
:
14643 case R_PPC64_TOC16_LO
:
14644 case R_PPC64_TOC16_HI
:
14645 case R_PPC64_TOC16_DS
:
14646 case R_PPC64_TOC16_LO_DS
:
14647 case R_PPC64_TOC16_HA
:
14648 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14651 /* Relocate against the beginning of the section. */
14652 case R_PPC64_SECTOFF
:
14653 case R_PPC64_SECTOFF_LO
:
14654 case R_PPC64_SECTOFF_HI
:
14655 case R_PPC64_SECTOFF_DS
:
14656 case R_PPC64_SECTOFF_LO_DS
:
14657 case R_PPC64_SECTOFF_HA
:
14659 addend
-= sec
->output_section
->vma
;
14662 case R_PPC64_REL16
:
14663 case R_PPC64_REL16_LO
:
14664 case R_PPC64_REL16_HI
:
14665 case R_PPC64_REL16_HA
:
14666 case R_PPC64_REL16DX_HA
:
14669 case R_PPC64_REL14
:
14670 case R_PPC64_REL14_BRNTAKEN
:
14671 case R_PPC64_REL14_BRTAKEN
:
14672 case R_PPC64_REL24
:
14675 case R_PPC64_TPREL16
:
14676 case R_PPC64_TPREL16_LO
:
14677 case R_PPC64_TPREL16_HI
:
14678 case R_PPC64_TPREL16_HA
:
14679 case R_PPC64_TPREL16_DS
:
14680 case R_PPC64_TPREL16_LO_DS
:
14681 case R_PPC64_TPREL16_HIGH
:
14682 case R_PPC64_TPREL16_HIGHA
:
14683 case R_PPC64_TPREL16_HIGHER
:
14684 case R_PPC64_TPREL16_HIGHERA
:
14685 case R_PPC64_TPREL16_HIGHEST
:
14686 case R_PPC64_TPREL16_HIGHESTA
:
14688 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14689 && h
->elf
.dynindx
== -1)
14691 /* Make this relocation against an undefined weak symbol
14692 resolve to zero. This is really just a tweak, since
14693 code using weak externs ought to check that they are
14694 defined before using them. */
14695 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14697 insn
= bfd_get_32 (input_bfd
, p
);
14698 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14700 bfd_put_32 (input_bfd
, insn
, p
);
14703 if (htab
->elf
.tls_sec
!= NULL
)
14704 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14705 if (bfd_link_pic (info
))
14706 /* The TPREL16 relocs shouldn't really be used in shared
14707 libs as they will result in DT_TEXTREL being set, but
14708 support them anyway. */
14712 case R_PPC64_DTPREL16
:
14713 case R_PPC64_DTPREL16_LO
:
14714 case R_PPC64_DTPREL16_HI
:
14715 case R_PPC64_DTPREL16_HA
:
14716 case R_PPC64_DTPREL16_DS
:
14717 case R_PPC64_DTPREL16_LO_DS
:
14718 case R_PPC64_DTPREL16_HIGH
:
14719 case R_PPC64_DTPREL16_HIGHA
:
14720 case R_PPC64_DTPREL16_HIGHER
:
14721 case R_PPC64_DTPREL16_HIGHERA
:
14722 case R_PPC64_DTPREL16_HIGHEST
:
14723 case R_PPC64_DTPREL16_HIGHESTA
:
14724 if (htab
->elf
.tls_sec
!= NULL
)
14725 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14728 case R_PPC64_ADDR64_LOCAL
:
14729 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14734 case R_PPC64_DTPMOD64
:
14739 case R_PPC64_TPREL64
:
14740 if (htab
->elf
.tls_sec
!= NULL
)
14741 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14744 case R_PPC64_DTPREL64
:
14745 if (htab
->elf
.tls_sec
!= NULL
)
14746 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14747 /* Fall through. */
14749 /* Relocations that may need to be propagated if this is a
14751 case R_PPC64_REL30
:
14752 case R_PPC64_REL32
:
14753 case R_PPC64_REL64
:
14754 case R_PPC64_ADDR14
:
14755 case R_PPC64_ADDR14_BRNTAKEN
:
14756 case R_PPC64_ADDR14_BRTAKEN
:
14757 case R_PPC64_ADDR16
:
14758 case R_PPC64_ADDR16_DS
:
14759 case R_PPC64_ADDR16_HA
:
14760 case R_PPC64_ADDR16_HI
:
14761 case R_PPC64_ADDR16_HIGH
:
14762 case R_PPC64_ADDR16_HIGHA
:
14763 case R_PPC64_ADDR16_HIGHER
:
14764 case R_PPC64_ADDR16_HIGHERA
:
14765 case R_PPC64_ADDR16_HIGHEST
:
14766 case R_PPC64_ADDR16_HIGHESTA
:
14767 case R_PPC64_ADDR16_LO
:
14768 case R_PPC64_ADDR16_LO_DS
:
14769 case R_PPC64_ADDR24
:
14770 case R_PPC64_ADDR32
:
14771 case R_PPC64_ADDR64
:
14772 case R_PPC64_UADDR16
:
14773 case R_PPC64_UADDR32
:
14774 case R_PPC64_UADDR64
:
14776 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14779 if (NO_OPD_RELOCS
&& is_opd
)
14782 if (bfd_link_pic (info
)
14783 ? ((h
!= NULL
&& pc_dynrelocs (h
))
14784 || must_be_dyn_reloc (info
, r_type
))
14786 ? h
->dyn_relocs
!= NULL
14787 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14789 bfd_boolean skip
, relocate
;
14793 /* When generating a dynamic object, these relocations
14794 are copied into the output file to be resolved at run
14800 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14801 input_section
, rel
->r_offset
);
14802 if (out_off
== (bfd_vma
) -1)
14804 else if (out_off
== (bfd_vma
) -2)
14805 skip
= TRUE
, relocate
= TRUE
;
14806 out_off
+= (input_section
->output_section
->vma
14807 + input_section
->output_offset
);
14808 outrel
.r_offset
= out_off
;
14809 outrel
.r_addend
= rel
->r_addend
;
14811 /* Optimize unaligned reloc use. */
14812 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14813 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14814 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14815 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14816 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14817 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14818 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14819 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14820 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14823 memset (&outrel
, 0, sizeof outrel
);
14824 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14826 && r_type
!= R_PPC64_TOC
)
14828 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14829 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14833 /* This symbol is local, or marked to become local,
14834 or this is an opd section reloc which must point
14835 at a local function. */
14836 outrel
.r_addend
+= relocation
;
14837 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14839 if (is_opd
&& h
!= NULL
)
14841 /* Lie about opd entries. This case occurs
14842 when building shared libraries and we
14843 reference a function in another shared
14844 lib. The same thing happens for a weak
14845 definition in an application that's
14846 overridden by a strong definition in a
14847 shared lib. (I believe this is a generic
14848 bug in binutils handling of weak syms.)
14849 In these cases we won't use the opd
14850 entry in this lib. */
14851 unresolved_reloc
= FALSE
;
14854 && r_type
== R_PPC64_ADDR64
14856 ? h
->elf
.type
== STT_GNU_IFUNC
14857 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14858 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14861 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14863 /* We need to relocate .opd contents for ld.so.
14864 Prelink also wants simple and consistent rules
14865 for relocs. This make all RELATIVE relocs have
14866 *r_offset equal to r_addend. */
14875 ? h
->elf
.type
== STT_GNU_IFUNC
14876 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14878 info
->callbacks
->einfo
14879 /* xgettext:c-format */
14880 (_("%P: %H: %s for indirect "
14881 "function `%T' unsupported\n"),
14882 input_bfd
, input_section
, rel
->r_offset
,
14883 ppc64_elf_howto_table
[r_type
]->name
,
14887 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14889 else if (sec
== NULL
|| sec
->owner
== NULL
)
14891 bfd_set_error (bfd_error_bad_value
);
14898 osec
= sec
->output_section
;
14899 indx
= elf_section_data (osec
)->dynindx
;
14903 if ((osec
->flags
& SEC_READONLY
) == 0
14904 && htab
->elf
.data_index_section
!= NULL
)
14905 osec
= htab
->elf
.data_index_section
;
14907 osec
= htab
->elf
.text_index_section
;
14908 indx
= elf_section_data (osec
)->dynindx
;
14910 BFD_ASSERT (indx
!= 0);
14912 /* We are turning this relocation into one
14913 against a section symbol, so subtract out
14914 the output section's address but not the
14915 offset of the input section in the output
14917 outrel
.r_addend
-= osec
->vma
;
14920 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14924 sreloc
= elf_section_data (input_section
)->sreloc
;
14926 ? h
->elf
.type
== STT_GNU_IFUNC
14927 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14928 sreloc
= htab
->elf
.irelplt
;
14929 if (sreloc
== NULL
)
14932 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14935 loc
= sreloc
->contents
;
14936 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14937 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14939 /* If this reloc is against an external symbol, it will
14940 be computed at runtime, so there's no need to do
14941 anything now. However, for the sake of prelink ensure
14942 that the section contents are a known value. */
14945 unresolved_reloc
= FALSE
;
14946 /* The value chosen here is quite arbitrary as ld.so
14947 ignores section contents except for the special
14948 case of .opd where the contents might be accessed
14949 before relocation. Choose zero, as that won't
14950 cause reloc overflow. */
14953 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14954 to improve backward compatibility with older
14956 if (r_type
== R_PPC64_ADDR64
)
14957 addend
= outrel
.r_addend
;
14958 /* Adjust pc_relative relocs to have zero in *r_offset. */
14959 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14960 addend
= (input_section
->output_section
->vma
14961 + input_section
->output_offset
14968 case R_PPC64_GLOB_DAT
:
14969 case R_PPC64_JMP_SLOT
:
14970 case R_PPC64_JMP_IREL
:
14971 case R_PPC64_RELATIVE
:
14972 /* We shouldn't ever see these dynamic relocs in relocatable
14974 /* Fall through. */
14976 case R_PPC64_PLTGOT16
:
14977 case R_PPC64_PLTGOT16_DS
:
14978 case R_PPC64_PLTGOT16_HA
:
14979 case R_PPC64_PLTGOT16_HI
:
14980 case R_PPC64_PLTGOT16_LO
:
14981 case R_PPC64_PLTGOT16_LO_DS
:
14982 case R_PPC64_PLTREL32
:
14983 case R_PPC64_PLTREL64
:
14984 /* These ones haven't been implemented yet. */
14986 info
->callbacks
->einfo
14987 /* xgettext:c-format */
14988 (_("%P: %B: %s is not supported for `%T'\n"),
14990 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14992 bfd_set_error (bfd_error_invalid_operation
);
14997 /* Multi-instruction sequences that access the TOC can be
14998 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14999 to nop; addi rb,r2,x; */
15005 case R_PPC64_GOT_TLSLD16_HI
:
15006 case R_PPC64_GOT_TLSGD16_HI
:
15007 case R_PPC64_GOT_TPREL16_HI
:
15008 case R_PPC64_GOT_DTPREL16_HI
:
15009 case R_PPC64_GOT16_HI
:
15010 case R_PPC64_TOC16_HI
:
15011 /* These relocs would only be useful if building up an
15012 offset to later add to r2, perhaps in an indexed
15013 addressing mode instruction. Don't try to optimize.
15014 Unfortunately, the possibility of someone building up an
15015 offset like this or even with the HA relocs, means that
15016 we need to check the high insn when optimizing the low
15020 case R_PPC64_GOT_TLSLD16_HA
:
15021 case R_PPC64_GOT_TLSGD16_HA
:
15022 case R_PPC64_GOT_TPREL16_HA
:
15023 case R_PPC64_GOT_DTPREL16_HA
:
15024 case R_PPC64_GOT16_HA
:
15025 case R_PPC64_TOC16_HA
:
15026 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15027 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15029 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15030 bfd_put_32 (input_bfd
, NOP
, p
);
15034 case R_PPC64_GOT_TLSLD16_LO
:
15035 case R_PPC64_GOT_TLSGD16_LO
:
15036 case R_PPC64_GOT_TPREL16_LO_DS
:
15037 case R_PPC64_GOT_DTPREL16_LO_DS
:
15038 case R_PPC64_GOT16_LO
:
15039 case R_PPC64_GOT16_LO_DS
:
15040 case R_PPC64_TOC16_LO
:
15041 case R_PPC64_TOC16_LO_DS
:
15042 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15043 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15045 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15046 insn
= bfd_get_32 (input_bfd
, p
);
15047 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15049 /* Transform addic to addi when we change reg. */
15050 insn
&= ~((0x3f << 26) | (0x1f << 16));
15051 insn
|= (14u << 26) | (2 << 16);
15055 insn
&= ~(0x1f << 16);
15058 bfd_put_32 (input_bfd
, insn
, p
);
15063 /* Do any further special processing. */
15064 howto
= ppc64_elf_howto_table
[(int) r_type
];
15070 case R_PPC64_REL16_HA
:
15071 case R_PPC64_REL16DX_HA
:
15072 case R_PPC64_ADDR16_HA
:
15073 case R_PPC64_ADDR16_HIGHA
:
15074 case R_PPC64_ADDR16_HIGHERA
:
15075 case R_PPC64_ADDR16_HIGHESTA
:
15076 case R_PPC64_TOC16_HA
:
15077 case R_PPC64_SECTOFF_HA
:
15078 case R_PPC64_TPREL16_HA
:
15079 case R_PPC64_TPREL16_HIGHA
:
15080 case R_PPC64_TPREL16_HIGHERA
:
15081 case R_PPC64_TPREL16_HIGHESTA
:
15082 case R_PPC64_DTPREL16_HA
:
15083 case R_PPC64_DTPREL16_HIGHA
:
15084 case R_PPC64_DTPREL16_HIGHERA
:
15085 case R_PPC64_DTPREL16_HIGHESTA
:
15086 /* It's just possible that this symbol is a weak symbol
15087 that's not actually defined anywhere. In that case,
15088 'sec' would be NULL, and we should leave the symbol
15089 alone (it will be set to zero elsewhere in the link). */
15092 /* Fall through. */
15094 case R_PPC64_GOT16_HA
:
15095 case R_PPC64_PLTGOT16_HA
:
15096 case R_PPC64_PLT16_HA
:
15097 case R_PPC64_GOT_TLSGD16_HA
:
15098 case R_PPC64_GOT_TLSLD16_HA
:
15099 case R_PPC64_GOT_TPREL16_HA
:
15100 case R_PPC64_GOT_DTPREL16_HA
:
15101 /* Add 0x10000 if sign bit in 0:15 is set.
15102 Bits 0:15 are not used. */
15106 case R_PPC64_ADDR16_DS
:
15107 case R_PPC64_ADDR16_LO_DS
:
15108 case R_PPC64_GOT16_DS
:
15109 case R_PPC64_GOT16_LO_DS
:
15110 case R_PPC64_PLT16_LO_DS
:
15111 case R_PPC64_SECTOFF_DS
:
15112 case R_PPC64_SECTOFF_LO_DS
:
15113 case R_PPC64_TOC16_DS
:
15114 case R_PPC64_TOC16_LO_DS
:
15115 case R_PPC64_PLTGOT16_DS
:
15116 case R_PPC64_PLTGOT16_LO_DS
:
15117 case R_PPC64_GOT_TPREL16_DS
:
15118 case R_PPC64_GOT_TPREL16_LO_DS
:
15119 case R_PPC64_GOT_DTPREL16_DS
:
15120 case R_PPC64_GOT_DTPREL16_LO_DS
:
15121 case R_PPC64_TPREL16_DS
:
15122 case R_PPC64_TPREL16_LO_DS
:
15123 case R_PPC64_DTPREL16_DS
:
15124 case R_PPC64_DTPREL16_LO_DS
:
15125 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15127 /* If this reloc is against an lq, lxv, or stxv insn, then
15128 the value must be a multiple of 16. This is somewhat of
15129 a hack, but the "correct" way to do this by defining _DQ
15130 forms of all the _DS relocs bloats all reloc switches in
15131 this file. It doesn't make much sense to use these
15132 relocs in data, so testing the insn should be safe. */
15133 if ((insn
& (0x3f << 26)) == (56u << 26)
15134 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15136 relocation
+= addend
;
15137 addend
= insn
& (mask
^ 3);
15138 if ((relocation
& mask
) != 0)
15140 relocation
^= relocation
& mask
;
15141 info
->callbacks
->einfo
15142 /* xgettext:c-format */
15143 (_("%P: %H: error: %s not a multiple of %u\n"),
15144 input_bfd
, input_section
, rel
->r_offset
,
15147 bfd_set_error (bfd_error_bad_value
);
15154 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15155 because such sections are not SEC_ALLOC and thus ld.so will
15156 not process them. */
15157 if (unresolved_reloc
15158 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15159 && h
->elf
.def_dynamic
)
15160 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15161 rel
->r_offset
) != (bfd_vma
) -1)
15163 info
->callbacks
->einfo
15164 /* xgettext:c-format */
15165 (_("%P: %H: unresolvable %s against `%T'\n"),
15166 input_bfd
, input_section
, rel
->r_offset
,
15168 h
->elf
.root
.root
.string
);
15172 /* 16-bit fields in insns mostly have signed values, but a
15173 few insns have 16-bit unsigned values. Really, we should
15174 have different reloc types. */
15175 if (howto
->complain_on_overflow
!= complain_overflow_dont
15176 && howto
->dst_mask
== 0xffff
15177 && (input_section
->flags
& SEC_CODE
) != 0)
15179 enum complain_overflow complain
= complain_overflow_signed
;
15181 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15182 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15183 complain
= complain_overflow_bitfield
;
15184 else if (howto
->rightshift
== 0
15185 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15186 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15187 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15188 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15189 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15190 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15191 complain
= complain_overflow_unsigned
;
15192 if (howto
->complain_on_overflow
!= complain
)
15194 alt_howto
= *howto
;
15195 alt_howto
.complain_on_overflow
= complain
;
15196 howto
= &alt_howto
;
15200 if (r_type
== R_PPC64_REL16DX_HA
)
15202 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15203 if (rel
->r_offset
+ 4 > input_section
->size
)
15204 r
= bfd_reloc_outofrange
;
15207 relocation
+= addend
;
15208 relocation
-= (rel
->r_offset
15209 + input_section
->output_offset
15210 + input_section
->output_section
->vma
);
15211 relocation
= (bfd_signed_vma
) relocation
>> 16;
15212 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15214 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15215 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15217 if (relocation
+ 0x8000 > 0xffff)
15218 r
= bfd_reloc_overflow
;
15222 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15223 rel
->r_offset
, relocation
, addend
);
15225 if (r
!= bfd_reloc_ok
)
15227 char *more_info
= NULL
;
15228 const char *reloc_name
= howto
->name
;
15230 if (reloc_dest
!= DEST_NORMAL
)
15232 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15233 if (more_info
!= NULL
)
15235 strcpy (more_info
, reloc_name
);
15236 strcat (more_info
, (reloc_dest
== DEST_OPD
15237 ? " (OPD)" : " (stub)"));
15238 reloc_name
= more_info
;
15242 if (r
== bfd_reloc_overflow
)
15244 /* On code like "if (foo) foo();" don't report overflow
15245 on a branch to zero when foo is undefined. */
15247 && (reloc_dest
== DEST_STUB
15249 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15250 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15251 && is_branch_reloc (r_type
))))
15252 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15253 sym_name
, reloc_name
,
15255 input_bfd
, input_section
,
15260 info
->callbacks
->einfo
15261 /* xgettext:c-format */
15262 (_("%P: %H: %s against `%T': error %d\n"),
15263 input_bfd
, input_section
, rel
->r_offset
,
15264 reloc_name
, sym_name
, (int) r
);
15267 if (more_info
!= NULL
)
15277 Elf_Internal_Shdr
*rel_hdr
;
15278 size_t deleted
= rel
- wrel
;
15280 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15281 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15282 if (rel_hdr
->sh_size
== 0)
15284 /* It is too late to remove an empty reloc section. Leave
15286 ??? What is wrong with an empty section??? */
15287 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15290 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15291 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15292 input_section
->reloc_count
-= deleted
;
15295 /* If we're emitting relocations, then shortly after this function
15296 returns, reloc offsets and addends for this section will be
15297 adjusted. Worse, reloc symbol indices will be for the output
15298 file rather than the input. Save a copy of the relocs for
15299 opd_entry_value. */
15300 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15303 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15304 rel
= bfd_alloc (input_bfd
, amt
);
15305 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15306 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15309 memcpy (rel
, relocs
, amt
);
15314 /* Adjust the value of any local symbols in opd sections. */
15317 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15318 const char *name ATTRIBUTE_UNUSED
,
15319 Elf_Internal_Sym
*elfsym
,
15320 asection
*input_sec
,
15321 struct elf_link_hash_entry
*h
)
15323 struct _opd_sec_data
*opd
;
15330 opd
= get_opd_info (input_sec
);
15331 if (opd
== NULL
|| opd
->adjust
== NULL
)
15334 value
= elfsym
->st_value
- input_sec
->output_offset
;
15335 if (!bfd_link_relocatable (info
))
15336 value
-= input_sec
->output_section
->vma
;
15338 adjust
= opd
->adjust
[OPD_NDX (value
)];
15342 elfsym
->st_value
+= adjust
;
15346 /* Finish up dynamic symbol handling. We set the contents of various
15347 dynamic sections here. */
15350 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15351 struct bfd_link_info
*info
,
15352 struct elf_link_hash_entry
*h
,
15353 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
15355 struct ppc_link_hash_table
*htab
;
15356 struct plt_entry
*ent
;
15357 Elf_Internal_Rela rela
;
15360 htab
= ppc_hash_table (info
);
15364 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15365 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15367 /* This symbol has an entry in the procedure linkage
15368 table. Set it up. */
15369 if (!htab
->elf
.dynamic_sections_created
15370 || h
->dynindx
== -1)
15372 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15374 && (h
->root
.type
== bfd_link_hash_defined
15375 || h
->root
.type
== bfd_link_hash_defweak
));
15376 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15377 + htab
->elf
.iplt
->output_offset
15378 + ent
->plt
.offset
);
15380 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15382 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15383 rela
.r_addend
= (h
->root
.u
.def
.value
15384 + h
->root
.u
.def
.section
->output_offset
15385 + h
->root
.u
.def
.section
->output_section
->vma
15387 loc
= (htab
->elf
.irelplt
->contents
15388 + (htab
->elf
.irelplt
->reloc_count
++
15389 * sizeof (Elf64_External_Rela
)));
15393 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15394 + htab
->elf
.splt
->output_offset
15395 + ent
->plt
.offset
);
15396 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15397 rela
.r_addend
= ent
->addend
;
15398 loc
= (htab
->elf
.srelplt
->contents
15399 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15400 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15402 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15404 if (!htab
->opd_abi
)
15406 if (!h
->def_regular
)
15408 /* Mark the symbol as undefined, rather than as
15409 defined in glink. Leave the value if there were
15410 any relocations where pointer equality matters
15411 (this is a clue for the dynamic linker, to make
15412 function pointer comparisons work between an
15413 application and shared library), otherwise set it
15415 sym
->st_shndx
= SHN_UNDEF
;
15416 if (!h
->pointer_equality_needed
)
15418 else if (!h
->ref_regular_nonweak
)
15420 /* This breaks function pointer comparisons, but
15421 that is better than breaking tests for a NULL
15422 function pointer. */
15431 /* This symbol needs a copy reloc. Set it up. */
15434 if (h
->dynindx
== -1
15435 || (h
->root
.type
!= bfd_link_hash_defined
15436 && h
->root
.type
!= bfd_link_hash_defweak
)
15437 || htab
->elf
.srelbss
== NULL
15438 || htab
->elf
.sreldynrelro
== NULL
)
15441 rela
.r_offset
= (h
->root
.u
.def
.value
15442 + h
->root
.u
.def
.section
->output_section
->vma
15443 + h
->root
.u
.def
.section
->output_offset
);
15444 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15446 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
15447 srel
= htab
->elf
.sreldynrelro
;
15449 srel
= htab
->elf
.srelbss
;
15450 loc
= srel
->contents
;
15451 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15452 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15458 /* Used to decide how to sort relocs in an optimal manner for the
15459 dynamic linker, before writing them out. */
15461 static enum elf_reloc_type_class
15462 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15463 const asection
*rel_sec
,
15464 const Elf_Internal_Rela
*rela
)
15466 enum elf_ppc64_reloc_type r_type
;
15467 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15469 if (rel_sec
== htab
->elf
.irelplt
)
15470 return reloc_class_ifunc
;
15472 r_type
= ELF64_R_TYPE (rela
->r_info
);
15475 case R_PPC64_RELATIVE
:
15476 return reloc_class_relative
;
15477 case R_PPC64_JMP_SLOT
:
15478 return reloc_class_plt
;
15480 return reloc_class_copy
;
15482 return reloc_class_normal
;
15486 /* Finish up the dynamic sections. */
15489 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15490 struct bfd_link_info
*info
)
15492 struct ppc_link_hash_table
*htab
;
15496 htab
= ppc_hash_table (info
);
15500 dynobj
= htab
->elf
.dynobj
;
15501 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15503 if (htab
->elf
.dynamic_sections_created
)
15505 Elf64_External_Dyn
*dyncon
, *dynconend
;
15507 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15510 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15511 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15512 for (; dyncon
< dynconend
; dyncon
++)
15514 Elf_Internal_Dyn dyn
;
15517 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15524 case DT_PPC64_GLINK
:
15526 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15527 /* We stupidly defined DT_PPC64_GLINK to be the start
15528 of glink rather than the first entry point, which is
15529 what ld.so needs, and now have a bigger stub to
15530 support automatic multiple TOCs. */
15531 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15535 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15538 dyn
.d_un
.d_ptr
= s
->vma
;
15542 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15543 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15546 case DT_PPC64_OPDSZ
:
15547 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15550 dyn
.d_un
.d_val
= s
->size
;
15554 s
= htab
->elf
.splt
;
15555 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15559 s
= htab
->elf
.srelplt
;
15560 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15564 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15568 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15572 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15574 /* Fill in the first entry in the global offset table.
15575 We use it to hold the link-time TOCbase. */
15576 bfd_put_64 (output_bfd
,
15577 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15578 htab
->elf
.sgot
->contents
);
15580 /* Set .got entry size. */
15581 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15584 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15586 /* Set .plt entry size. */
15587 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15588 = PLT_ENTRY_SIZE (htab
);
15591 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15592 brlt ourselves if emitrelocations. */
15593 if (htab
->brlt
!= NULL
15594 && htab
->brlt
->reloc_count
!= 0
15595 && !_bfd_elf_link_output_relocs (output_bfd
,
15597 elf_section_data (htab
->brlt
)->rela
.hdr
,
15598 elf_section_data (htab
->brlt
)->relocs
,
15602 if (htab
->glink
!= NULL
15603 && htab
->glink
->reloc_count
!= 0
15604 && !_bfd_elf_link_output_relocs (output_bfd
,
15606 elf_section_data (htab
->glink
)->rela
.hdr
,
15607 elf_section_data (htab
->glink
)->relocs
,
15611 if (htab
->glink_eh_frame
!= NULL
15612 && htab
->glink_eh_frame
->size
!= 0)
15616 asection
*stub_sec
;
15618 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15619 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15621 stub_sec
= stub_sec
->next
)
15622 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15628 /* Offset to stub section. */
15629 val
= (stub_sec
->output_section
->vma
15630 + stub_sec
->output_offset
);
15631 val
-= (htab
->glink_eh_frame
->output_section
->vma
15632 + htab
->glink_eh_frame
->output_offset
15633 + (p
- htab
->glink_eh_frame
->contents
));
15634 if (val
+ 0x80000000 > 0xffffffff)
15636 info
->callbacks
->einfo
15637 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15641 bfd_put_32 (dynobj
, val
, p
);
15643 /* stub section size. */
15645 /* Augmentation. */
15650 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15656 /* Offset to .glink. */
15657 val
= (htab
->glink
->output_section
->vma
15658 + htab
->glink
->output_offset
15660 val
-= (htab
->glink_eh_frame
->output_section
->vma
15661 + htab
->glink_eh_frame
->output_offset
15662 + (p
- htab
->glink_eh_frame
->contents
));
15663 if (val
+ 0x80000000 > 0xffffffff)
15665 info
->callbacks
->einfo
15666 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15667 htab
->glink
->name
);
15670 bfd_put_32 (dynobj
, val
, p
);
15674 /* Augmentation. */
15680 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15681 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15682 htab
->glink_eh_frame
,
15683 htab
->glink_eh_frame
->contents
))
15687 /* We need to handle writing out multiple GOT sections ourselves,
15688 since we didn't add them to DYNOBJ. We know dynobj is the first
15690 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15694 if (!is_ppc64_elf (dynobj
))
15697 s
= ppc64_elf_tdata (dynobj
)->got
;
15700 && s
->output_section
!= bfd_abs_section_ptr
15701 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15702 s
->contents
, s
->output_offset
,
15705 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15708 && s
->output_section
!= bfd_abs_section_ptr
15709 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15710 s
->contents
, s
->output_offset
,
15718 #include "elf64-target.h"
15720 /* FreeBSD support */
15722 #undef TARGET_LITTLE_SYM
15723 #undef TARGET_LITTLE_NAME
15725 #undef TARGET_BIG_SYM
15726 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15727 #undef TARGET_BIG_NAME
15728 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15731 #define ELF_OSABI ELFOSABI_FREEBSD
15734 #define elf64_bed elf64_powerpc_fbsd_bed
15736 #include "elf64-target.h"