1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2016 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
141 /* TOC base alignment. */
142 #define TOC_BASE_ALIGN 256
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
177 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
179 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
180 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
181 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
182 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
183 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
185 /* glink call stub instructions. We enter with the index in R0. */
186 #define GLINK_CALL_STUB_SIZE (16*4)
190 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
191 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
193 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
194 /* ld %2,(0b-1b)(%11) */
195 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
196 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
202 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
205 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
206 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
209 #define NOP 0x60000000
211 /* Some other nops. */
212 #define CROR_151515 0x4def7b82
213 #define CROR_313131 0x4ffffb82
215 /* .glink entries for the first 32k functions are two instructions. */
216 #define LI_R0_0 0x38000000 /* li %r0,0 */
217 #define B_DOT 0x48000000 /* b . */
219 /* After that, we need two instructions to load the index, followed by
221 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
222 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
224 /* Instructions used by the save and restore reg functions. */
225 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
226 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
227 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
228 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
229 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
230 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
231 #define LI_R12_0 0x39800000 /* li %r12,0 */
232 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
233 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
234 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
235 #define BLR 0x4e800020 /* blr */
237 /* Since .opd is an array of descriptors and each entry will end up
238 with identical R_PPC64_RELATIVE relocs, there is really no need to
239 propagate .opd relocs; The dynamic linker should be taught to
240 relocate .opd without reloc entries. */
241 #ifndef NO_OPD_RELOCS
242 #define NO_OPD_RELOCS 0
246 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
250 abiversion (bfd
*abfd
)
252 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
256 set_abiversion (bfd
*abfd
, int ver
)
258 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
259 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
262 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
264 /* Relocation HOWTO's. */
265 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
267 static reloc_howto_type ppc64_elf_howto_raw
[] = {
268 /* This reloc does nothing. */
269 HOWTO (R_PPC64_NONE
, /* type */
271 3, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_PPC64_NONE", /* name */
278 FALSE
, /* partial_inplace */
281 FALSE
), /* pcrel_offset */
283 /* A standard 32 bit relocation. */
284 HOWTO (R_PPC64_ADDR32
, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE
, /* pc_relative */
290 complain_overflow_bitfield
, /* complain_on_overflow */
291 bfd_elf_generic_reloc
, /* special_function */
292 "R_PPC64_ADDR32", /* name */
293 FALSE
, /* partial_inplace */
295 0xffffffff, /* dst_mask */
296 FALSE
), /* pcrel_offset */
298 /* An absolute 26 bit branch; the lower two bits must be zero.
299 FIXME: we don't check that, we just clear them. */
300 HOWTO (R_PPC64_ADDR24
, /* type */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
304 FALSE
, /* pc_relative */
306 complain_overflow_bitfield
, /* complain_on_overflow */
307 bfd_elf_generic_reloc
, /* special_function */
308 "R_PPC64_ADDR24", /* name */
309 FALSE
, /* partial_inplace */
311 0x03fffffc, /* dst_mask */
312 FALSE
), /* pcrel_offset */
314 /* A standard 16 bit relocation. */
315 HOWTO (R_PPC64_ADDR16
, /* type */
317 1, /* size (0 = byte, 1 = short, 2 = long) */
319 FALSE
, /* pc_relative */
321 complain_overflow_bitfield
, /* complain_on_overflow */
322 bfd_elf_generic_reloc
, /* special_function */
323 "R_PPC64_ADDR16", /* name */
324 FALSE
, /* partial_inplace */
326 0xffff, /* dst_mask */
327 FALSE
), /* pcrel_offset */
329 /* A 16 bit relocation without overflow. */
330 HOWTO (R_PPC64_ADDR16_LO
, /* type */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_dont
,/* complain_on_overflow */
337 bfd_elf_generic_reloc
, /* special_function */
338 "R_PPC64_ADDR16_LO", /* name */
339 FALSE
, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* Bits 16-31 of an address. */
345 HOWTO (R_PPC64_ADDR16_HI
, /* type */
347 1, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE
, /* pc_relative */
351 complain_overflow_signed
, /* complain_on_overflow */
352 bfd_elf_generic_reloc
, /* special_function */
353 "R_PPC64_ADDR16_HI", /* name */
354 FALSE
, /* partial_inplace */
356 0xffff, /* dst_mask */
357 FALSE
), /* pcrel_offset */
359 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
360 bits, treated as a signed number, is negative. */
361 HOWTO (R_PPC64_ADDR16_HA
, /* type */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE
, /* pc_relative */
367 complain_overflow_signed
, /* complain_on_overflow */
368 ppc64_elf_ha_reloc
, /* special_function */
369 "R_PPC64_ADDR16_HA", /* name */
370 FALSE
, /* partial_inplace */
372 0xffff, /* dst_mask */
373 FALSE
), /* pcrel_offset */
375 /* An absolute 16 bit branch; the lower two bits must be zero.
376 FIXME: we don't check that, we just clear them. */
377 HOWTO (R_PPC64_ADDR14
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 ppc64_elf_branch_reloc
, /* special_function */
385 "R_PPC64_ADDR14", /* name */
386 FALSE
, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 /* An absolute 16 bit branch, for which bit 10 should be set to
392 indicate that the branch is expected to be taken. The lower two
393 bits must be zero. */
394 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc
, /* special_function */
402 "R_PPC64_ADDR14_BRTAKEN",/* name */
403 FALSE
, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 FALSE
), /* pcrel_offset */
408 /* An absolute 16 bit branch, for which bit 10 should be set to
409 indicate that the branch is not expected to be taken. The lower
410 two bits must be zero. */
411 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 FALSE
, /* pc_relative */
417 complain_overflow_signed
, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc
, /* special_function */
419 "R_PPC64_ADDR14_BRNTAKEN",/* name */
420 FALSE
, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 FALSE
), /* pcrel_offset */
425 /* A relative 26 bit branch; the lower two bits must be zero. */
426 HOWTO (R_PPC64_REL24
, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 TRUE
, /* pc_relative */
432 complain_overflow_signed
, /* complain_on_overflow */
433 ppc64_elf_branch_reloc
, /* special_function */
434 "R_PPC64_REL24", /* name */
435 FALSE
, /* partial_inplace */
437 0x03fffffc, /* dst_mask */
438 TRUE
), /* pcrel_offset */
440 /* A relative 16 bit branch; the lower two bits must be zero. */
441 HOWTO (R_PPC64_REL14
, /* type */
443 2, /* size (0 = byte, 1 = short, 2 = long) */
445 TRUE
, /* pc_relative */
447 complain_overflow_signed
, /* complain_on_overflow */
448 ppc64_elf_branch_reloc
, /* special_function */
449 "R_PPC64_REL14", /* name */
450 FALSE
, /* partial_inplace */
452 0x0000fffc, /* dst_mask */
453 TRUE
), /* pcrel_offset */
455 /* A relative 16 bit branch. Bit 10 should be set to indicate that
456 the branch is expected to be taken. The lower two bits must be
458 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
462 TRUE
, /* pc_relative */
464 complain_overflow_signed
, /* complain_on_overflow */
465 ppc64_elf_brtaken_reloc
, /* special_function */
466 "R_PPC64_REL14_BRTAKEN", /* name */
467 FALSE
, /* partial_inplace */
469 0x0000fffc, /* dst_mask */
470 TRUE
), /* pcrel_offset */
472 /* A relative 16 bit branch. Bit 10 should be set to indicate that
473 the branch is not expected to be taken. The lower two bits must
475 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
, /* complain_on_overflow */
482 ppc64_elf_brtaken_reloc
, /* special_function */
483 "R_PPC64_REL14_BRNTAKEN",/* name */
484 FALSE
, /* partial_inplace */
486 0x0000fffc, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
491 HOWTO (R_PPC64_GOT16
, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_signed
, /* complain_on_overflow */
498 ppc64_elf_unhandled_reloc
, /* special_function */
499 "R_PPC64_GOT16", /* name */
500 FALSE
, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
507 HOWTO (R_PPC64_GOT16_LO
, /* type */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE
, /* pc_relative */
513 complain_overflow_dont
, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc
, /* special_function */
515 "R_PPC64_GOT16_LO", /* name */
516 FALSE
, /* partial_inplace */
518 0xffff, /* dst_mask */
519 FALSE
), /* pcrel_offset */
521 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
523 HOWTO (R_PPC64_GOT16_HI
, /* type */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE
, /* pc_relative */
529 complain_overflow_signed
,/* complain_on_overflow */
530 ppc64_elf_unhandled_reloc
, /* special_function */
531 "R_PPC64_GOT16_HI", /* name */
532 FALSE
, /* partial_inplace */
534 0xffff, /* dst_mask */
535 FALSE
), /* pcrel_offset */
537 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
539 HOWTO (R_PPC64_GOT16_HA
, /* type */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE
, /* pc_relative */
545 complain_overflow_signed
,/* complain_on_overflow */
546 ppc64_elf_unhandled_reloc
, /* special_function */
547 "R_PPC64_GOT16_HA", /* name */
548 FALSE
, /* partial_inplace */
550 0xffff, /* dst_mask */
551 FALSE
), /* pcrel_offset */
553 /* This is used only by the dynamic linker. The symbol should exist
554 both in the object being run and in some shared library. The
555 dynamic linker copies the data addressed by the symbol from the
556 shared library into the object, because the object being
557 run has to have the data at some particular address. */
558 HOWTO (R_PPC64_COPY
, /* type */
560 0, /* this one is variable size */
562 FALSE
, /* pc_relative */
564 complain_overflow_dont
, /* complain_on_overflow */
565 ppc64_elf_unhandled_reloc
, /* special_function */
566 "R_PPC64_COPY", /* name */
567 FALSE
, /* partial_inplace */
570 FALSE
), /* pcrel_offset */
572 /* Like R_PPC64_ADDR64, but used when setting global offset table
574 HOWTO (R_PPC64_GLOB_DAT
, /* type */
576 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
578 FALSE
, /* pc_relative */
580 complain_overflow_dont
, /* complain_on_overflow */
581 ppc64_elf_unhandled_reloc
, /* special_function */
582 "R_PPC64_GLOB_DAT", /* name */
583 FALSE
, /* partial_inplace */
585 ONES (64), /* dst_mask */
586 FALSE
), /* pcrel_offset */
588 /* Created by the link editor. Marks a procedure linkage table
589 entry for a symbol. */
590 HOWTO (R_PPC64_JMP_SLOT
, /* type */
592 0, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_dont
, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc
, /* special_function */
598 "R_PPC64_JMP_SLOT", /* name */
599 FALSE
, /* partial_inplace */
602 FALSE
), /* pcrel_offset */
604 /* Used only by the dynamic linker. When the object is run, this
605 doubleword64 is set to the load address of the object, plus the
607 HOWTO (R_PPC64_RELATIVE
, /* type */
609 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
611 FALSE
, /* pc_relative */
613 complain_overflow_dont
, /* complain_on_overflow */
614 bfd_elf_generic_reloc
, /* special_function */
615 "R_PPC64_RELATIVE", /* name */
616 FALSE
, /* partial_inplace */
618 ONES (64), /* dst_mask */
619 FALSE
), /* pcrel_offset */
621 /* Like R_PPC64_ADDR32, but may be unaligned. */
622 HOWTO (R_PPC64_UADDR32
, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE
, /* pc_relative */
628 complain_overflow_bitfield
, /* complain_on_overflow */
629 bfd_elf_generic_reloc
, /* special_function */
630 "R_PPC64_UADDR32", /* name */
631 FALSE
, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 FALSE
), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16, but may be unaligned. */
637 HOWTO (R_PPC64_UADDR16
, /* type */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE
, /* pc_relative */
643 complain_overflow_bitfield
, /* complain_on_overflow */
644 bfd_elf_generic_reloc
, /* special_function */
645 "R_PPC64_UADDR16", /* name */
646 FALSE
, /* partial_inplace */
648 0xffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
651 /* 32-bit PC relative. */
652 HOWTO (R_PPC64_REL32
, /* type */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
656 TRUE
, /* pc_relative */
658 complain_overflow_signed
, /* complain_on_overflow */
659 bfd_elf_generic_reloc
, /* special_function */
660 "R_PPC64_REL32", /* name */
661 FALSE
, /* partial_inplace */
663 0xffffffff, /* dst_mask */
664 TRUE
), /* pcrel_offset */
666 /* 32-bit relocation to the symbol's procedure linkage table. */
667 HOWTO (R_PPC64_PLT32
, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_bitfield
, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc
, /* special_function */
675 "R_PPC64_PLT32", /* name */
676 FALSE
, /* partial_inplace */
678 0xffffffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
681 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
682 FIXME: R_PPC64_PLTREL32 not supported. */
683 HOWTO (R_PPC64_PLTREL32
, /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 TRUE
, /* pc_relative */
689 complain_overflow_signed
, /* complain_on_overflow */
690 ppc64_elf_unhandled_reloc
, /* special_function */
691 "R_PPC64_PLTREL32", /* name */
692 FALSE
, /* partial_inplace */
694 0xffffffff, /* dst_mask */
695 TRUE
), /* pcrel_offset */
697 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
699 HOWTO (R_PPC64_PLT16_LO
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_dont
, /* complain_on_overflow */
706 ppc64_elf_unhandled_reloc
, /* special_function */
707 "R_PPC64_PLT16_LO", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
715 HOWTO (R_PPC64_PLT16_HI
, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE
, /* pc_relative */
721 complain_overflow_signed
, /* complain_on_overflow */
722 ppc64_elf_unhandled_reloc
, /* special_function */
723 "R_PPC64_PLT16_HI", /* name */
724 FALSE
, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE
), /* pcrel_offset */
729 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
731 HOWTO (R_PPC64_PLT16_HA
, /* type */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
735 FALSE
, /* pc_relative */
737 complain_overflow_signed
, /* complain_on_overflow */
738 ppc64_elf_unhandled_reloc
, /* special_function */
739 "R_PPC64_PLT16_HA", /* name */
740 FALSE
, /* partial_inplace */
742 0xffff, /* dst_mask */
743 FALSE
), /* pcrel_offset */
745 /* 16-bit section relative relocation. */
746 HOWTO (R_PPC64_SECTOFF
, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 FALSE
, /* pc_relative */
752 complain_overflow_signed
, /* complain_on_overflow */
753 ppc64_elf_sectoff_reloc
, /* special_function */
754 "R_PPC64_SECTOFF", /* name */
755 FALSE
, /* partial_inplace */
757 0xffff, /* dst_mask */
758 FALSE
), /* pcrel_offset */
760 /* Like R_PPC64_SECTOFF, but no overflow warning. */
761 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 FALSE
, /* pc_relative */
767 complain_overflow_dont
, /* complain_on_overflow */
768 ppc64_elf_sectoff_reloc
, /* special_function */
769 "R_PPC64_SECTOFF_LO", /* name */
770 FALSE
, /* partial_inplace */
772 0xffff, /* dst_mask */
773 FALSE
), /* pcrel_offset */
775 /* 16-bit upper half section relative relocation. */
776 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 FALSE
, /* pc_relative */
782 complain_overflow_signed
, /* complain_on_overflow */
783 ppc64_elf_sectoff_reloc
, /* special_function */
784 "R_PPC64_SECTOFF_HI", /* name */
785 FALSE
, /* partial_inplace */
787 0xffff, /* dst_mask */
788 FALSE
), /* pcrel_offset */
790 /* 16-bit upper half adjusted section relative relocation. */
791 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_signed
, /* complain_on_overflow */
798 ppc64_elf_sectoff_ha_reloc
, /* special_function */
799 "R_PPC64_SECTOFF_HA", /* name */
800 FALSE
, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* Like R_PPC64_REL24 without touching the two least significant bits. */
806 HOWTO (R_PPC64_REL30
, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 TRUE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_PPC64_REL30", /* name */
815 FALSE
, /* partial_inplace */
817 0xfffffffc, /* dst_mask */
818 TRUE
), /* pcrel_offset */
820 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
822 /* A standard 64-bit relocation. */
823 HOWTO (R_PPC64_ADDR64
, /* type */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 bfd_elf_generic_reloc
, /* special_function */
831 "R_PPC64_ADDR64", /* name */
832 FALSE
, /* partial_inplace */
834 ONES (64), /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* The bits 32-47 of an address. */
838 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE
, /* pc_relative */
844 complain_overflow_dont
, /* complain_on_overflow */
845 bfd_elf_generic_reloc
, /* special_function */
846 "R_PPC64_ADDR16_HIGHER", /* name */
847 FALSE
, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* The bits 32-47 of an address, plus 1 if the contents of the low
853 16 bits, treated as a signed number, is negative. */
854 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
858 FALSE
, /* pc_relative */
860 complain_overflow_dont
, /* complain_on_overflow */
861 ppc64_elf_ha_reloc
, /* special_function */
862 "R_PPC64_ADDR16_HIGHERA", /* name */
863 FALSE
, /* partial_inplace */
865 0xffff, /* dst_mask */
866 FALSE
), /* pcrel_offset */
868 /* The bits 48-63 of an address. */
869 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
873 FALSE
, /* pc_relative */
875 complain_overflow_dont
, /* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_PPC64_ADDR16_HIGHEST", /* name */
878 FALSE
, /* partial_inplace */
880 0xffff, /* dst_mask */
881 FALSE
), /* pcrel_offset */
883 /* The bits 48-63 of an address, plus 1 if the contents of the low
884 16 bits, treated as a signed number, is negative. */
885 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE
, /* pc_relative */
891 complain_overflow_dont
, /* complain_on_overflow */
892 ppc64_elf_ha_reloc
, /* special_function */
893 "R_PPC64_ADDR16_HIGHESTA", /* name */
894 FALSE
, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE
), /* pcrel_offset */
899 /* Like ADDR64, but may be unaligned. */
900 HOWTO (R_PPC64_UADDR64
, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 FALSE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_PPC64_UADDR64", /* name */
909 FALSE
, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* 64-bit relative relocation. */
915 HOWTO (R_PPC64_REL64
, /* type */
917 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
919 TRUE
, /* pc_relative */
921 complain_overflow_dont
, /* complain_on_overflow */
922 bfd_elf_generic_reloc
, /* special_function */
923 "R_PPC64_REL64", /* name */
924 FALSE
, /* partial_inplace */
926 ONES (64), /* dst_mask */
927 TRUE
), /* pcrel_offset */
929 /* 64-bit relocation to the symbol's procedure linkage table. */
930 HOWTO (R_PPC64_PLT64
, /* type */
932 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
934 FALSE
, /* pc_relative */
936 complain_overflow_dont
, /* complain_on_overflow */
937 ppc64_elf_unhandled_reloc
, /* special_function */
938 "R_PPC64_PLT64", /* name */
939 FALSE
, /* partial_inplace */
941 ONES (64), /* dst_mask */
942 FALSE
), /* pcrel_offset */
944 /* 64-bit PC relative relocation to the symbol's procedure linkage
946 /* FIXME: R_PPC64_PLTREL64 not supported. */
947 HOWTO (R_PPC64_PLTREL64
, /* type */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
951 TRUE
, /* pc_relative */
953 complain_overflow_dont
, /* complain_on_overflow */
954 ppc64_elf_unhandled_reloc
, /* special_function */
955 "R_PPC64_PLTREL64", /* name */
956 FALSE
, /* partial_inplace */
958 ONES (64), /* dst_mask */
959 TRUE
), /* pcrel_offset */
961 /* 16 bit TOC-relative relocation. */
963 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
964 HOWTO (R_PPC64_TOC16
, /* type */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 FALSE
, /* pc_relative */
970 complain_overflow_signed
, /* complain_on_overflow */
971 ppc64_elf_toc_reloc
, /* special_function */
972 "R_PPC64_TOC16", /* name */
973 FALSE
, /* partial_inplace */
975 0xffff, /* dst_mask */
976 FALSE
), /* pcrel_offset */
978 /* 16 bit TOC-relative relocation without overflow. */
980 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
981 HOWTO (R_PPC64_TOC16_LO
, /* type */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE
, /* pc_relative */
987 complain_overflow_dont
, /* complain_on_overflow */
988 ppc64_elf_toc_reloc
, /* special_function */
989 "R_PPC64_TOC16_LO", /* name */
990 FALSE
, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE
), /* pcrel_offset */
995 /* 16 bit TOC-relative relocation, high 16 bits. */
997 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
998 HOWTO (R_PPC64_TOC16_HI
, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE
, /* pc_relative */
1004 complain_overflow_signed
, /* complain_on_overflow */
1005 ppc64_elf_toc_reloc
, /* special_function */
1006 "R_PPC64_TOC16_HI", /* name */
1007 FALSE
, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE
), /* pcrel_offset */
1012 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1013 contents of the low 16 bits, treated as a signed number, is
1016 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1017 HOWTO (R_PPC64_TOC16_HA
, /* type */
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_signed
, /* complain_on_overflow */
1024 ppc64_elf_toc_ha_reloc
, /* special_function */
1025 "R_PPC64_TOC16_HA", /* name */
1026 FALSE
, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1031 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1033 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1034 HOWTO (R_PPC64_TOC
, /* type */
1036 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1038 FALSE
, /* pc_relative */
1040 complain_overflow_dont
, /* complain_on_overflow */
1041 ppc64_elf_toc64_reloc
, /* special_function */
1042 "R_PPC64_TOC", /* name */
1043 FALSE
, /* partial_inplace */
1045 ONES (64), /* dst_mask */
1046 FALSE
), /* pcrel_offset */
1048 /* Like R_PPC64_GOT16, but also informs the link editor that the
1049 value to relocate may (!) refer to a PLT entry which the link
1050 editor (a) may replace with the symbol value. If the link editor
1051 is unable to fully resolve the symbol, it may (b) create a PLT
1052 entry and store the address to the new PLT entry in the GOT.
1053 This permits lazy resolution of function symbols at run time.
1054 The link editor may also skip all of this and just (c) emit a
1055 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1056 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16
, /* type */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_signed
, /* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc
, /* special_function */
1065 "R_PPC64_PLTGOT16", /* name */
1066 FALSE
, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Like R_PPC64_PLTGOT16, but without overflow. */
1072 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1073 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_dont
, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc
, /* special_function */
1081 "R_PPC64_PLTGOT16_LO", /* name */
1082 FALSE
, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1088 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1089 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_signed
, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc
, /* special_function */
1097 "R_PPC64_PLTGOT16_HI", /* name */
1098 FALSE
, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1103 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1104 1 if the contents of the low 16 bits, treated as a signed number,
1106 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1107 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1108 16, /* rightshift */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE
, /* pc_relative */
1113 complain_overflow_signed
, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc
, /* special_function */
1115 "R_PPC64_PLTGOT16_HA", /* name */
1116 FALSE
, /* partial_inplace */
1118 0xffff, /* dst_mask */
1119 FALSE
), /* pcrel_offset */
1121 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE
, /* pc_relative */
1128 complain_overflow_signed
, /* complain_on_overflow */
1129 bfd_elf_generic_reloc
, /* special_function */
1130 "R_PPC64_ADDR16_DS", /* name */
1131 FALSE
, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE
), /* pcrel_offset */
1136 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE
, /* pc_relative */
1143 complain_overflow_dont
,/* complain_on_overflow */
1144 bfd_elf_generic_reloc
, /* special_function */
1145 "R_PPC64_ADDR16_LO_DS",/* name */
1146 FALSE
, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE
), /* pcrel_offset */
1151 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_GOT16_DS
, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE
, /* pc_relative */
1158 complain_overflow_signed
, /* complain_on_overflow */
1159 ppc64_elf_unhandled_reloc
, /* special_function */
1160 "R_PPC64_GOT16_DS", /* name */
1161 FALSE
, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE
), /* pcrel_offset */
1166 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE
, /* pc_relative */
1173 complain_overflow_dont
, /* complain_on_overflow */
1174 ppc64_elf_unhandled_reloc
, /* special_function */
1175 "R_PPC64_GOT16_LO_DS", /* name */
1176 FALSE
, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE
), /* pcrel_offset */
1181 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1182 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE
, /* pc_relative */
1188 complain_overflow_dont
, /* complain_on_overflow */
1189 ppc64_elf_unhandled_reloc
, /* special_function */
1190 "R_PPC64_PLT16_LO_DS", /* name */
1191 FALSE
, /* partial_inplace */
1193 0xfffc, /* dst_mask */
1194 FALSE
), /* pcrel_offset */
1196 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1197 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE
, /* pc_relative */
1203 complain_overflow_signed
, /* complain_on_overflow */
1204 ppc64_elf_sectoff_reloc
, /* special_function */
1205 "R_PPC64_SECTOFF_DS", /* name */
1206 FALSE
, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE
), /* pcrel_offset */
1211 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1212 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_dont
, /* complain_on_overflow */
1219 ppc64_elf_sectoff_reloc
, /* special_function */
1220 "R_PPC64_SECTOFF_LO_DS",/* name */
1221 FALSE
, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1227 HOWTO (R_PPC64_TOC16_DS
, /* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_signed
, /* complain_on_overflow */
1234 ppc64_elf_toc_reloc
, /* special_function */
1235 "R_PPC64_TOC16_DS", /* name */
1236 FALSE
, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1242 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 ppc64_elf_toc_reloc
, /* special_function */
1250 "R_PPC64_TOC16_LO_DS", /* name */
1251 FALSE
, /* partial_inplace */
1253 0xfffc, /* dst_mask */
1254 FALSE
), /* pcrel_offset */
1256 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1257 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1258 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE
, /* pc_relative */
1264 complain_overflow_signed
, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc
, /* special_function */
1266 "R_PPC64_PLTGOT16_DS", /* name */
1267 FALSE
, /* partial_inplace */
1269 0xfffc, /* dst_mask */
1270 FALSE
), /* pcrel_offset */
1272 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1273 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1274 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE
, /* pc_relative */
1280 complain_overflow_dont
, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc
, /* special_function */
1282 "R_PPC64_PLTGOT16_LO_DS",/* name */
1283 FALSE
, /* partial_inplace */
1285 0xfffc, /* dst_mask */
1286 FALSE
), /* pcrel_offset */
1288 /* Marker relocs for TLS. */
1291 2, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE
, /* pc_relative */
1295 complain_overflow_dont
, /* complain_on_overflow */
1296 bfd_elf_generic_reloc
, /* special_function */
1297 "R_PPC64_TLS", /* name */
1298 FALSE
, /* partial_inplace */
1301 FALSE
), /* pcrel_offset */
1303 HOWTO (R_PPC64_TLSGD
,
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE
, /* pc_relative */
1309 complain_overflow_dont
, /* complain_on_overflow */
1310 bfd_elf_generic_reloc
, /* special_function */
1311 "R_PPC64_TLSGD", /* name */
1312 FALSE
, /* partial_inplace */
1315 FALSE
), /* pcrel_offset */
1317 HOWTO (R_PPC64_TLSLD
,
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE
, /* pc_relative */
1323 complain_overflow_dont
, /* complain_on_overflow */
1324 bfd_elf_generic_reloc
, /* special_function */
1325 "R_PPC64_TLSLD", /* name */
1326 FALSE
, /* partial_inplace */
1329 FALSE
), /* pcrel_offset */
1331 HOWTO (R_PPC64_TOCSAVE
,
1333 2, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_dont
, /* complain_on_overflow */
1338 bfd_elf_generic_reloc
, /* special_function */
1339 "R_PPC64_TOCSAVE", /* name */
1340 FALSE
, /* partial_inplace */
1343 FALSE
), /* pcrel_offset */
1345 /* Computes the load module index of the load module that contains the
1346 definition of its TLS sym. */
1347 HOWTO (R_PPC64_DTPMOD64
,
1349 4, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE
, /* pc_relative */
1353 complain_overflow_dont
, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc
, /* special_function */
1355 "R_PPC64_DTPMOD64", /* name */
1356 FALSE
, /* partial_inplace */
1358 ONES (64), /* dst_mask */
1359 FALSE
), /* pcrel_offset */
1361 /* Computes a dtv-relative displacement, the difference between the value
1362 of sym+add and the base address of the thread-local storage block that
1363 contains the definition of sym, minus 0x8000. */
1364 HOWTO (R_PPC64_DTPREL64
,
1366 4, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE
, /* pc_relative */
1370 complain_overflow_dont
, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc
, /* special_function */
1372 "R_PPC64_DTPREL64", /* name */
1373 FALSE
, /* partial_inplace */
1375 ONES (64), /* dst_mask */
1376 FALSE
), /* pcrel_offset */
1378 /* A 16 bit dtprel reloc. */
1379 HOWTO (R_PPC64_DTPREL16
,
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE
, /* pc_relative */
1385 complain_overflow_signed
, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc
, /* special_function */
1387 "R_PPC64_DTPREL16", /* name */
1388 FALSE
, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE
), /* pcrel_offset */
1393 /* Like DTPREL16, but no overflow. */
1394 HOWTO (R_PPC64_DTPREL16_LO
,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE
, /* pc_relative */
1400 complain_overflow_dont
, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc
, /* special_function */
1402 "R_PPC64_DTPREL16_LO", /* name */
1403 FALSE
, /* partial_inplace */
1405 0xffff, /* dst_mask */
1406 FALSE
), /* pcrel_offset */
1408 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1409 HOWTO (R_PPC64_DTPREL16_HI
,
1410 16, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE
, /* pc_relative */
1415 complain_overflow_signed
, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc
, /* special_function */
1417 "R_PPC64_DTPREL16_HI", /* name */
1418 FALSE
, /* partial_inplace */
1420 0xffff, /* dst_mask */
1421 FALSE
), /* pcrel_offset */
1423 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1424 HOWTO (R_PPC64_DTPREL16_HA
,
1425 16, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE
, /* pc_relative */
1430 complain_overflow_signed
, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc
, /* special_function */
1432 "R_PPC64_DTPREL16_HA", /* name */
1433 FALSE
, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 FALSE
), /* pcrel_offset */
1438 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1439 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1440 32, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE
, /* pc_relative */
1445 complain_overflow_dont
, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc
, /* special_function */
1447 "R_PPC64_DTPREL16_HIGHER", /* name */
1448 FALSE
, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE
), /* pcrel_offset */
1453 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1454 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1455 32, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE
, /* pc_relative */
1460 complain_overflow_dont
, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc
, /* special_function */
1462 "R_PPC64_DTPREL16_HIGHERA", /* name */
1463 FALSE
, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE
), /* pcrel_offset */
1468 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1470 48, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE
, /* pc_relative */
1475 complain_overflow_dont
, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc
, /* special_function */
1477 "R_PPC64_DTPREL16_HIGHEST", /* name */
1478 FALSE
, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE
), /* pcrel_offset */
1483 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1485 48, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_dont
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1493 FALSE
, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* Like DTPREL16, but for insns with a DS field. */
1499 HOWTO (R_PPC64_DTPREL16_DS
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_signed
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_DTPREL16_DS", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xfffc, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like DTPREL16_DS, but no overflow. */
1514 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_DTPREL16_LO_DS", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xfffc, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Computes a tp-relative displacement, the difference between the value of
1529 sym+add and the value of the thread pointer (r13). */
1530 HOWTO (R_PPC64_TPREL64
,
1532 4, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE
, /* pc_relative */
1536 complain_overflow_dont
, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc
, /* special_function */
1538 "R_PPC64_TPREL64", /* name */
1539 FALSE
, /* partial_inplace */
1541 ONES (64), /* dst_mask */
1542 FALSE
), /* pcrel_offset */
1544 /* A 16 bit tprel reloc. */
1545 HOWTO (R_PPC64_TPREL16
,
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_signed
, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc
, /* special_function */
1553 "R_PPC64_TPREL16", /* name */
1554 FALSE
, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 /* Like TPREL16, but no overflow. */
1560 HOWTO (R_PPC64_TPREL16_LO
,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_dont
, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc
, /* special_function */
1568 "R_PPC64_TPREL16_LO", /* name */
1569 FALSE
, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 /* Like TPREL16_LO, but next higher group of 16 bits. */
1575 HOWTO (R_PPC64_TPREL16_HI
,
1576 16, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE
, /* pc_relative */
1581 complain_overflow_signed
, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc
, /* special_function */
1583 "R_PPC64_TPREL16_HI", /* name */
1584 FALSE
, /* partial_inplace */
1586 0xffff, /* dst_mask */
1587 FALSE
), /* pcrel_offset */
1589 /* Like TPREL16_HI, but adjust for low 16 bits. */
1590 HOWTO (R_PPC64_TPREL16_HA
,
1591 16, /* rightshift */
1592 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE
, /* pc_relative */
1596 complain_overflow_signed
, /* complain_on_overflow */
1597 ppc64_elf_unhandled_reloc
, /* special_function */
1598 "R_PPC64_TPREL16_HA", /* name */
1599 FALSE
, /* partial_inplace */
1601 0xffff, /* dst_mask */
1602 FALSE
), /* pcrel_offset */
1604 /* Like TPREL16_HI, but next higher group of 16 bits. */
1605 HOWTO (R_PPC64_TPREL16_HIGHER
,
1606 32, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE
, /* pc_relative */
1611 complain_overflow_dont
, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc
, /* special_function */
1613 "R_PPC64_TPREL16_HIGHER", /* name */
1614 FALSE
, /* partial_inplace */
1616 0xffff, /* dst_mask */
1617 FALSE
), /* pcrel_offset */
1619 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1620 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1621 32, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE
, /* pc_relative */
1626 complain_overflow_dont
, /* complain_on_overflow */
1627 ppc64_elf_unhandled_reloc
, /* special_function */
1628 "R_PPC64_TPREL16_HIGHERA", /* name */
1629 FALSE
, /* partial_inplace */
1631 0xffff, /* dst_mask */
1632 FALSE
), /* pcrel_offset */
1634 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1636 48, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc
, /* special_function */
1643 "R_PPC64_TPREL16_HIGHEST", /* name */
1644 FALSE
, /* partial_inplace */
1646 0xffff, /* dst_mask */
1647 FALSE
), /* pcrel_offset */
1649 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1651 48, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE
, /* pc_relative */
1656 complain_overflow_dont
, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc
, /* special_function */
1658 "R_PPC64_TPREL16_HIGHESTA", /* name */
1659 FALSE
, /* partial_inplace */
1661 0xffff, /* dst_mask */
1662 FALSE
), /* pcrel_offset */
1664 /* Like TPREL16, but for insns with a DS field. */
1665 HOWTO (R_PPC64_TPREL16_DS
,
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_signed
, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc
, /* special_function */
1673 "R_PPC64_TPREL16_DS", /* name */
1674 FALSE
, /* partial_inplace */
1676 0xfffc, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 /* Like TPREL16_DS, but no overflow. */
1680 HOWTO (R_PPC64_TPREL16_LO_DS
,
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 FALSE
, /* pc_relative */
1686 complain_overflow_dont
, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc
, /* special_function */
1688 "R_PPC64_TPREL16_LO_DS", /* name */
1689 FALSE
, /* partial_inplace */
1691 0xfffc, /* dst_mask */
1692 FALSE
), /* pcrel_offset */
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1696 to the first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSGD16
,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE
, /* pc_relative */
1703 complain_overflow_signed
, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc
, /* special_function */
1705 "R_PPC64_GOT_TLSGD16", /* name */
1706 FALSE
, /* partial_inplace */
1708 0xffff, /* dst_mask */
1709 FALSE
), /* pcrel_offset */
1711 /* Like GOT_TLSGD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE
, /* pc_relative */
1718 complain_overflow_dont
, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc
, /* special_function */
1720 "R_PPC64_GOT_TLSGD16_LO", /* name */
1721 FALSE
, /* partial_inplace */
1723 0xffff, /* dst_mask */
1724 FALSE
), /* pcrel_offset */
1726 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE
, /* pc_relative */
1733 complain_overflow_signed
, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc
, /* special_function */
1735 "R_PPC64_GOT_TLSGD16_HI", /* name */
1736 FALSE
, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE
), /* pcrel_offset */
1741 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE
, /* pc_relative */
1748 complain_overflow_signed
, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc
, /* special_function */
1750 "R_PPC64_GOT_TLSGD16_HA", /* name */
1751 FALSE
, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE
), /* pcrel_offset */
1756 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1757 with values (sym+add)@dtpmod and zero, and computes the offset to the
1758 first entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_TLSLD16
,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE
, /* pc_relative */
1765 complain_overflow_signed
, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc
, /* special_function */
1767 "R_PPC64_GOT_TLSLD16", /* name */
1768 FALSE
, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE
), /* pcrel_offset */
1773 /* Like GOT_TLSLD16, but no overflow. */
1774 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_dont
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_TLSLD16_LO", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xffff, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE
, /* pc_relative */
1795 complain_overflow_signed
, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc
, /* special_function */
1797 "R_PPC64_GOT_TLSLD16_HI", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_signed
, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc
, /* special_function */
1812 "R_PPC64_GOT_TLSLD16_HA", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1819 the offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE
, /* pc_relative */
1826 complain_overflow_signed
, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc
, /* special_function */
1828 "R_PPC64_GOT_DTPREL16_DS", /* name */
1829 FALSE
, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE
), /* pcrel_offset */
1834 /* Like GOT_DTPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_dont
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_signed
, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc
, /* special_function */
1858 "R_PPC64_GOT_DTPREL16_HI", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE
, /* pc_relative */
1871 complain_overflow_signed
, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc
, /* special_function */
1873 "R_PPC64_GOT_DTPREL16_HA", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1880 offset to the entry relative to the TOC base (r2). */
1881 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1883 1, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE
, /* pc_relative */
1887 complain_overflow_signed
, /* complain_on_overflow */
1888 ppc64_elf_unhandled_reloc
, /* special_function */
1889 "R_PPC64_GOT_TPREL16_DS", /* name */
1890 FALSE
, /* partial_inplace */
1892 0xfffc, /* dst_mask */
1893 FALSE
), /* pcrel_offset */
1895 /* Like GOT_TPREL16_DS, but no overflow. */
1896 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1898 1, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE
, /* pc_relative */
1902 complain_overflow_dont
, /* complain_on_overflow */
1903 ppc64_elf_unhandled_reloc
, /* special_function */
1904 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1905 FALSE
, /* partial_inplace */
1907 0xfffc, /* dst_mask */
1908 FALSE
), /* pcrel_offset */
1910 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1911 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1912 16, /* rightshift */
1913 1, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE
, /* pc_relative */
1917 complain_overflow_signed
, /* complain_on_overflow */
1918 ppc64_elf_unhandled_reloc
, /* special_function */
1919 "R_PPC64_GOT_TPREL16_HI", /* name */
1920 FALSE
, /* partial_inplace */
1922 0xffff, /* dst_mask */
1923 FALSE
), /* pcrel_offset */
1925 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1926 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1927 16, /* rightshift */
1928 1, /* size (0 = byte, 1 = short, 2 = long) */
1930 FALSE
, /* pc_relative */
1932 complain_overflow_signed
, /* complain_on_overflow */
1933 ppc64_elf_unhandled_reloc
, /* special_function */
1934 "R_PPC64_GOT_TPREL16_HA", /* name */
1935 FALSE
, /* partial_inplace */
1937 0xffff, /* dst_mask */
1938 FALSE
), /* pcrel_offset */
1940 HOWTO (R_PPC64_JMP_IREL
, /* type */
1942 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1944 FALSE
, /* pc_relative */
1946 complain_overflow_dont
, /* complain_on_overflow */
1947 ppc64_elf_unhandled_reloc
, /* special_function */
1948 "R_PPC64_JMP_IREL", /* name */
1949 FALSE
, /* partial_inplace */
1952 FALSE
), /* pcrel_offset */
1954 HOWTO (R_PPC64_IRELATIVE
, /* type */
1956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1958 FALSE
, /* pc_relative */
1960 complain_overflow_dont
, /* complain_on_overflow */
1961 bfd_elf_generic_reloc
, /* special_function */
1962 "R_PPC64_IRELATIVE", /* name */
1963 FALSE
, /* partial_inplace */
1965 ONES (64), /* dst_mask */
1966 FALSE
), /* pcrel_offset */
1968 /* A 16 bit relative relocation. */
1969 HOWTO (R_PPC64_REL16
, /* type */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE
, /* pc_relative */
1975 complain_overflow_signed
, /* complain_on_overflow */
1976 bfd_elf_generic_reloc
, /* special_function */
1977 "R_PPC64_REL16", /* name */
1978 FALSE
, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE
), /* pcrel_offset */
1983 /* A 16 bit relative relocation without overflow. */
1984 HOWTO (R_PPC64_REL16_LO
, /* type */
1986 1, /* size (0 = byte, 1 = short, 2 = long) */
1988 TRUE
, /* pc_relative */
1990 complain_overflow_dont
,/* complain_on_overflow */
1991 bfd_elf_generic_reloc
, /* special_function */
1992 "R_PPC64_REL16_LO", /* name */
1993 FALSE
, /* partial_inplace */
1995 0xffff, /* dst_mask */
1996 TRUE
), /* pcrel_offset */
1998 /* The high order 16 bits of a relative address. */
1999 HOWTO (R_PPC64_REL16_HI
, /* type */
2000 16, /* rightshift */
2001 1, /* size (0 = byte, 1 = short, 2 = long) */
2003 TRUE
, /* pc_relative */
2005 complain_overflow_signed
, /* complain_on_overflow */
2006 bfd_elf_generic_reloc
, /* special_function */
2007 "R_PPC64_REL16_HI", /* name */
2008 FALSE
, /* partial_inplace */
2010 0xffff, /* dst_mask */
2011 TRUE
), /* pcrel_offset */
2013 /* The high order 16 bits of a relative address, plus 1 if the contents of
2014 the low 16 bits, treated as a signed number, is negative. */
2015 HOWTO (R_PPC64_REL16_HA
, /* type */
2016 16, /* rightshift */
2017 1, /* size (0 = byte, 1 = short, 2 = long) */
2019 TRUE
, /* pc_relative */
2021 complain_overflow_signed
, /* complain_on_overflow */
2022 ppc64_elf_ha_reloc
, /* special_function */
2023 "R_PPC64_REL16_HA", /* name */
2024 FALSE
, /* partial_inplace */
2026 0xffff, /* dst_mask */
2027 TRUE
), /* pcrel_offset */
2029 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2030 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2031 16, /* rightshift */
2032 2, /* size (0 = byte, 1 = short, 2 = long) */
2034 TRUE
, /* pc_relative */
2036 complain_overflow_signed
, /* complain_on_overflow */
2037 ppc64_elf_ha_reloc
, /* special_function */
2038 "R_PPC64_REL16DX_HA", /* name */
2039 FALSE
, /* partial_inplace */
2041 0x1fffc1, /* dst_mask */
2042 TRUE
), /* pcrel_offset */
2044 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2045 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2046 16, /* rightshift */
2047 1, /* size (0 = byte, 1 = short, 2 = long) */
2049 FALSE
, /* pc_relative */
2051 complain_overflow_dont
, /* complain_on_overflow */
2052 bfd_elf_generic_reloc
, /* special_function */
2053 "R_PPC64_ADDR16_HIGH", /* name */
2054 FALSE
, /* partial_inplace */
2056 0xffff, /* dst_mask */
2057 FALSE
), /* pcrel_offset */
2059 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2060 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2061 16, /* rightshift */
2062 1, /* size (0 = byte, 1 = short, 2 = long) */
2064 FALSE
, /* pc_relative */
2066 complain_overflow_dont
, /* complain_on_overflow */
2067 ppc64_elf_ha_reloc
, /* special_function */
2068 "R_PPC64_ADDR16_HIGHA", /* name */
2069 FALSE
, /* partial_inplace */
2071 0xffff, /* dst_mask */
2072 FALSE
), /* pcrel_offset */
2074 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2075 HOWTO (R_PPC64_DTPREL16_HIGH
,
2076 16, /* rightshift */
2077 1, /* size (0 = byte, 1 = short, 2 = long) */
2079 FALSE
, /* pc_relative */
2081 complain_overflow_dont
, /* complain_on_overflow */
2082 ppc64_elf_unhandled_reloc
, /* special_function */
2083 "R_PPC64_DTPREL16_HIGH", /* name */
2084 FALSE
, /* partial_inplace */
2086 0xffff, /* dst_mask */
2087 FALSE
), /* pcrel_offset */
2089 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2090 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2091 16, /* rightshift */
2092 1, /* size (0 = byte, 1 = short, 2 = long) */
2094 FALSE
, /* pc_relative */
2096 complain_overflow_dont
, /* complain_on_overflow */
2097 ppc64_elf_unhandled_reloc
, /* special_function */
2098 "R_PPC64_DTPREL16_HIGHA", /* name */
2099 FALSE
, /* partial_inplace */
2101 0xffff, /* dst_mask */
2102 FALSE
), /* pcrel_offset */
2104 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2105 HOWTO (R_PPC64_TPREL16_HIGH
,
2106 16, /* rightshift */
2107 1, /* size (0 = byte, 1 = short, 2 = long) */
2109 FALSE
, /* pc_relative */
2111 complain_overflow_dont
, /* complain_on_overflow */
2112 ppc64_elf_unhandled_reloc
, /* special_function */
2113 "R_PPC64_TPREL16_HIGH", /* name */
2114 FALSE
, /* partial_inplace */
2116 0xffff, /* dst_mask */
2117 FALSE
), /* pcrel_offset */
2119 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2120 HOWTO (R_PPC64_TPREL16_HIGHA
,
2121 16, /* rightshift */
2122 1, /* size (0 = byte, 1 = short, 2 = long) */
2124 FALSE
, /* pc_relative */
2126 complain_overflow_dont
, /* complain_on_overflow */
2127 ppc64_elf_unhandled_reloc
, /* special_function */
2128 "R_PPC64_TPREL16_HIGHA", /* name */
2129 FALSE
, /* partial_inplace */
2131 0xffff, /* dst_mask */
2132 FALSE
), /* pcrel_offset */
2134 /* Marker reloc on ELFv2 large-model function entry. */
2135 HOWTO (R_PPC64_ENTRY
,
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2139 FALSE
, /* pc_relative */
2141 complain_overflow_dont
, /* complain_on_overflow */
2142 bfd_elf_generic_reloc
, /* special_function */
2143 "R_PPC64_ENTRY", /* name */
2144 FALSE
, /* partial_inplace */
2147 FALSE
), /* pcrel_offset */
2149 /* Like ADDR64, but use local entry point of function. */
2150 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2152 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2154 FALSE
, /* pc_relative */
2156 complain_overflow_dont
, /* complain_on_overflow */
2157 bfd_elf_generic_reloc
, /* special_function */
2158 "R_PPC64_ADDR64_LOCAL", /* name */
2159 FALSE
, /* partial_inplace */
2161 ONES (64), /* dst_mask */
2162 FALSE
), /* pcrel_offset */
2164 /* GNU extension to record C++ vtable hierarchy. */
2165 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2167 0, /* size (0 = byte, 1 = short, 2 = long) */
2169 FALSE
, /* pc_relative */
2171 complain_overflow_dont
, /* complain_on_overflow */
2172 NULL
, /* special_function */
2173 "R_PPC64_GNU_VTINHERIT", /* name */
2174 FALSE
, /* partial_inplace */
2177 FALSE
), /* pcrel_offset */
2179 /* GNU extension to record C++ vtable member usage. */
2180 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2182 0, /* size (0 = byte, 1 = short, 2 = long) */
2184 FALSE
, /* pc_relative */
2186 complain_overflow_dont
, /* complain_on_overflow */
2187 NULL
, /* special_function */
2188 "R_PPC64_GNU_VTENTRY", /* name */
2189 FALSE
, /* partial_inplace */
2192 FALSE
), /* pcrel_offset */
2196 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2200 ppc_howto_init (void)
2202 unsigned int i
, type
;
2204 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2206 type
= ppc64_elf_howto_raw
[i
].type
;
2207 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2208 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2212 static reloc_howto_type
*
2213 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2214 bfd_reloc_code_real_type code
)
2216 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2218 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2219 /* Initialize howto table if needed. */
2227 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2229 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2231 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2233 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2235 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2237 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2239 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2241 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2243 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2245 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2247 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2249 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2251 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2253 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2255 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2257 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2259 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2261 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2263 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2265 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2267 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2269 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2271 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2273 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2275 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2277 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2279 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2281 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2283 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2285 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2287 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2289 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2291 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2293 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2295 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2297 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2299 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2301 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2303 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2305 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2307 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2309 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2311 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2313 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2315 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2317 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2319 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2321 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2323 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2325 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2327 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2329 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2331 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2333 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2335 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2337 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2339 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2341 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2343 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2345 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2349 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2351 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2353 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2355 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2357 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2359 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2361 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2363 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2365 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2367 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2369 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2371 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2373 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2375 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2377 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2379 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2383 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2385 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2387 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2389 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2393 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2395 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2397 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2401 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2403 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2405 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2407 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2409 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2411 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2413 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2417 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2419 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2421 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2423 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2429 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2431 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2433 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2441 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2443 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2445 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2447 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2449 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2451 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2453 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2455 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2457 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2461 return ppc64_elf_howto_table
[r
];
2464 static reloc_howto_type
*
2465 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2470 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2471 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2472 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2473 return &ppc64_elf_howto_raw
[i
];
2478 /* Set the howto pointer for a PowerPC ELF reloc. */
2481 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2482 Elf_Internal_Rela
*dst
)
2486 /* Initialize howto table if needed. */
2487 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2490 type
= ELF64_R_TYPE (dst
->r_info
);
2491 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2493 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2495 type
= R_PPC64_NONE
;
2497 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2500 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2502 static bfd_reloc_status_type
2503 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2504 void *data
, asection
*input_section
,
2505 bfd
*output_bfd
, char **error_message
)
2507 enum elf_ppc64_reloc_type r_type
;
2509 bfd_size_type octets
;
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd
!= NULL
)
2516 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2517 input_section
, output_bfd
, error_message
);
2519 /* Adjust the addend for sign extension of the low 16 bits.
2520 We won't actually be using the low 16 bits, so trashing them
2522 reloc_entry
->addend
+= 0x8000;
2523 r_type
= reloc_entry
->howto
->type
;
2524 if (r_type
!= R_PPC64_REL16DX_HA
)
2525 return bfd_reloc_continue
;
2528 if (!bfd_is_com_section (symbol
->section
))
2529 value
= symbol
->value
;
2530 value
+= (reloc_entry
->addend
2531 + symbol
->section
->output_offset
2532 + symbol
->section
->output_section
->vma
);
2533 value
-= (reloc_entry
->address
2534 + input_section
->output_offset
2535 + input_section
->output_section
->vma
);
2536 value
= (bfd_signed_vma
) value
>> 16;
2538 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2539 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2541 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2542 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2543 if (value
+ 0x8000 > 0xffff)
2544 return bfd_reloc_overflow
;
2545 return bfd_reloc_ok
;
2548 static bfd_reloc_status_type
2549 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2550 void *data
, asection
*input_section
,
2551 bfd
*output_bfd
, char **error_message
)
2553 if (output_bfd
!= NULL
)
2554 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2555 input_section
, output_bfd
, error_message
);
2557 if (strcmp (symbol
->section
->name
, ".opd") == 0
2558 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2560 bfd_vma dest
= opd_entry_value (symbol
->section
,
2561 symbol
->value
+ reloc_entry
->addend
,
2563 if (dest
!= (bfd_vma
) -1)
2564 reloc_entry
->addend
= dest
- (symbol
->value
2565 + symbol
->section
->output_section
->vma
2566 + symbol
->section
->output_offset
);
2570 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2572 if (symbol
->section
->owner
!= abfd
2573 && symbol
->section
->owner
!= NULL
2574 && abiversion (symbol
->section
->owner
) >= 2)
2578 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2580 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2582 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2584 elfsym
= (elf_symbol_type
*) symdef
;
2590 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2592 return bfd_reloc_continue
;
2595 static bfd_reloc_status_type
2596 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2597 void *data
, asection
*input_section
,
2598 bfd
*output_bfd
, char **error_message
)
2601 enum elf_ppc64_reloc_type r_type
;
2602 bfd_size_type octets
;
2603 /* Assume 'at' branch hints. */
2604 bfd_boolean is_isa_v2
= TRUE
;
2606 /* If this is a relocatable link (output_bfd test tells us), just
2607 call the generic function. Any adjustment will be done at final
2609 if (output_bfd
!= NULL
)
2610 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2611 input_section
, output_bfd
, error_message
);
2613 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2614 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2615 insn
&= ~(0x01 << 21);
2616 r_type
= reloc_entry
->howto
->type
;
2617 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2618 || r_type
== R_PPC64_REL14_BRTAKEN
)
2619 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2623 /* Set 'a' bit. This is 0b00010 in BO field for branch
2624 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2625 for branch on CTR insns (BO == 1a00t or 1a01t). */
2626 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2628 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2638 if (!bfd_is_com_section (symbol
->section
))
2639 target
= symbol
->value
;
2640 target
+= symbol
->section
->output_section
->vma
;
2641 target
+= symbol
->section
->output_offset
;
2642 target
+= reloc_entry
->addend
;
2644 from
= (reloc_entry
->address
2645 + input_section
->output_offset
2646 + input_section
->output_section
->vma
);
2648 /* Invert 'y' bit if not the default. */
2649 if ((bfd_signed_vma
) (target
- from
) < 0)
2652 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2654 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2655 input_section
, output_bfd
, error_message
);
2658 static bfd_reloc_status_type
2659 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2660 void *data
, asection
*input_section
,
2661 bfd
*output_bfd
, char **error_message
)
2663 /* If this is a relocatable link (output_bfd test tells us), just
2664 call the generic function. Any adjustment will be done at final
2666 if (output_bfd
!= NULL
)
2667 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2668 input_section
, output_bfd
, error_message
);
2670 /* Subtract the symbol section base address. */
2671 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2672 return bfd_reloc_continue
;
2675 static bfd_reloc_status_type
2676 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2677 void *data
, asection
*input_section
,
2678 bfd
*output_bfd
, char **error_message
)
2680 /* If this is a relocatable link (output_bfd test tells us), just
2681 call the generic function. Any adjustment will be done at final
2683 if (output_bfd
!= NULL
)
2684 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2685 input_section
, output_bfd
, error_message
);
2687 /* Subtract the symbol section base address. */
2688 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2690 /* Adjust the addend for sign extension of the low 16 bits. */
2691 reloc_entry
->addend
+= 0x8000;
2692 return bfd_reloc_continue
;
2695 static bfd_reloc_status_type
2696 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2697 void *data
, asection
*input_section
,
2698 bfd
*output_bfd
, char **error_message
)
2702 /* If this is a relocatable link (output_bfd test tells us), just
2703 call the generic function. Any adjustment will be done at final
2705 if (output_bfd
!= NULL
)
2706 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2707 input_section
, output_bfd
, error_message
);
2709 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2711 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2713 /* Subtract the TOC base address. */
2714 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2715 return bfd_reloc_continue
;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2720 void *data
, asection
*input_section
,
2721 bfd
*output_bfd
, char **error_message
)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd
!= NULL
)
2729 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2730 input_section
, output_bfd
, error_message
);
2732 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2734 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2736 /* Subtract the TOC base address. */
2737 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2739 /* Adjust the addend for sign extension of the low 16 bits. */
2740 reloc_entry
->addend
+= 0x8000;
2741 return bfd_reloc_continue
;
2744 static bfd_reloc_status_type
2745 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2746 void *data
, asection
*input_section
,
2747 bfd
*output_bfd
, char **error_message
)
2750 bfd_size_type octets
;
2752 /* If this is a relocatable link (output_bfd test tells us), just
2753 call the generic function. Any adjustment will be done at final
2755 if (output_bfd
!= NULL
)
2756 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2757 input_section
, output_bfd
, error_message
);
2759 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2761 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2763 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2764 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2765 return bfd_reloc_ok
;
2768 static bfd_reloc_status_type
2769 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2770 void *data
, asection
*input_section
,
2771 bfd
*output_bfd
, char **error_message
)
2773 /* If this is a relocatable link (output_bfd test tells us), just
2774 call the generic function. Any adjustment will be done at final
2776 if (output_bfd
!= NULL
)
2777 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2778 input_section
, output_bfd
, error_message
);
2780 if (error_message
!= NULL
)
2782 static char buf
[60];
2783 sprintf (buf
, "generic linker can't handle %s",
2784 reloc_entry
->howto
->name
);
2785 *error_message
= buf
;
2787 return bfd_reloc_dangerous
;
2790 /* Track GOT entries needed for a given symbol. We might need more
2791 than one got entry per symbol. */
2794 struct got_entry
*next
;
2796 /* The symbol addend that we'll be placing in the GOT. */
2799 /* Unlike other ELF targets, we use separate GOT entries for the same
2800 symbol referenced from different input files. This is to support
2801 automatic multiple TOC/GOT sections, where the TOC base can vary
2802 from one input file to another. After partitioning into TOC groups
2803 we merge entries within the group.
2805 Point to the BFD owning this GOT entry. */
2808 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2809 TLS_TPREL or TLS_DTPREL for tls entries. */
2810 unsigned char tls_type
;
2812 /* Non-zero if got.ent points to real entry. */
2813 unsigned char is_indirect
;
2815 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2818 bfd_signed_vma refcount
;
2820 struct got_entry
*ent
;
2824 /* The same for PLT. */
2827 struct plt_entry
*next
;
2833 bfd_signed_vma refcount
;
2838 struct ppc64_elf_obj_tdata
2840 struct elf_obj_tdata elf
;
2842 /* Shortcuts to dynamic linker sections. */
2846 /* Used during garbage collection. We attach global symbols defined
2847 on removed .opd entries to this section so that the sym is removed. */
2848 asection
*deleted_section
;
2850 /* TLS local dynamic got entry handling. Support for multiple GOT
2851 sections means we potentially need one of these for each input bfd. */
2852 struct got_entry tlsld_got
;
2855 /* A copy of relocs before they are modified for --emit-relocs. */
2856 Elf_Internal_Rela
*relocs
;
2858 /* Section contents. */
2862 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2863 the reloc to be in the range -32768 to 32767. */
2864 unsigned int has_small_toc_reloc
: 1;
2866 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2867 instruction not one we handle. */
2868 unsigned int unexpected_toc_insn
: 1;
2871 #define ppc64_elf_tdata(bfd) \
2872 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2874 #define ppc64_tlsld_got(bfd) \
2875 (&ppc64_elf_tdata (bfd)->tlsld_got)
2877 #define is_ppc64_elf(bfd) \
2878 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2879 && elf_object_id (bfd) == PPC64_ELF_DATA)
2881 /* Override the generic function because we store some extras. */
2884 ppc64_elf_mkobject (bfd
*abfd
)
2886 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2890 /* Fix bad default arch selected for a 64 bit input bfd when the
2891 default is 32 bit. Also select arch based on apuinfo. */
2894 ppc64_elf_object_p (bfd
*abfd
)
2896 if (!abfd
->arch_info
->the_default
)
2899 if (abfd
->arch_info
->bits_per_word
== 32)
2901 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2903 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2905 /* Relies on arch after 32 bit default being 64 bit default. */
2906 abfd
->arch_info
= abfd
->arch_info
->next
;
2907 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2910 return _bfd_elf_ppc_set_arch (abfd
);
2913 /* Support for core dump NOTE sections. */
2916 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2918 size_t offset
, size
;
2920 if (note
->descsz
!= 504)
2924 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2927 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2933 /* Make a ".reg/999" section. */
2934 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2935 size
, note
->descpos
+ offset
);
2939 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2941 if (note
->descsz
!= 136)
2944 elf_tdata (abfd
)->core
->pid
2945 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2946 elf_tdata (abfd
)->core
->program
2947 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2948 elf_tdata (abfd
)->core
->command
2949 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2955 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2968 va_start (ap
, note_type
);
2969 memset (data
, 0, sizeof (data
));
2970 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2971 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2973 return elfcore_write_note (abfd
, buf
, bufsiz
,
2974 "CORE", note_type
, data
, sizeof (data
));
2985 va_start (ap
, note_type
);
2986 memset (data
, 0, 112);
2987 pid
= va_arg (ap
, long);
2988 bfd_put_32 (abfd
, pid
, data
+ 32);
2989 cursig
= va_arg (ap
, int);
2990 bfd_put_16 (abfd
, cursig
, data
+ 12);
2991 greg
= va_arg (ap
, const void *);
2992 memcpy (data
+ 112, greg
, 384);
2993 memset (data
+ 496, 0, 8);
2995 return elfcore_write_note (abfd
, buf
, bufsiz
,
2996 "CORE", note_type
, data
, sizeof (data
));
3001 /* Add extra PPC sections. */
3003 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3005 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3006 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3007 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3008 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3009 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3010 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3011 { NULL
, 0, 0, 0, 0 }
3014 enum _ppc64_sec_type
{
3020 struct _ppc64_elf_section_data
3022 struct bfd_elf_section_data elf
;
3026 /* An array with one entry for each opd function descriptor,
3027 and some spares since opd entries may be either 16 or 24 bytes. */
3028 #define OPD_NDX(OFF) ((OFF) >> 4)
3029 struct _opd_sec_data
3031 /* Points to the function code section for local opd entries. */
3032 asection
**func_sec
;
3034 /* After editing .opd, adjust references to opd local syms. */
3038 /* An array for toc sections, indexed by offset/8. */
3039 struct _toc_sec_data
3041 /* Specifies the relocation symbol index used at a given toc offset. */
3044 /* And the relocation addend. */
3049 enum _ppc64_sec_type sec_type
:2;
3051 /* Flag set when small branches are detected. Used to
3052 select suitable defaults for the stub group size. */
3053 unsigned int has_14bit_branch
:1;
3056 #define ppc64_elf_section_data(sec) \
3057 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3060 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3062 if (!sec
->used_by_bfd
)
3064 struct _ppc64_elf_section_data
*sdata
;
3065 bfd_size_type amt
= sizeof (*sdata
);
3067 sdata
= bfd_zalloc (abfd
, amt
);
3070 sec
->used_by_bfd
= sdata
;
3073 return _bfd_elf_new_section_hook (abfd
, sec
);
3076 static struct _opd_sec_data
*
3077 get_opd_info (asection
* sec
)
3080 && ppc64_elf_section_data (sec
) != NULL
3081 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3082 return &ppc64_elf_section_data (sec
)->u
.opd
;
3086 /* Parameters for the qsort hook. */
3087 static bfd_boolean synthetic_relocatable
;
3088 static asection
*synthetic_opd
;
3090 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3093 compare_symbols (const void *ap
, const void *bp
)
3095 const asymbol
*a
= * (const asymbol
**) ap
;
3096 const asymbol
*b
= * (const asymbol
**) bp
;
3098 /* Section symbols first. */
3099 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3101 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3104 /* then .opd symbols. */
3105 if (synthetic_opd
!= NULL
)
3107 if (strcmp (a
->section
->name
, ".opd") == 0
3108 && strcmp (b
->section
->name
, ".opd") != 0)
3110 if (strcmp (a
->section
->name
, ".opd") != 0
3111 && strcmp (b
->section
->name
, ".opd") == 0)
3115 /* then other code symbols. */
3116 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3117 == (SEC_CODE
| SEC_ALLOC
)
3118 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3119 != (SEC_CODE
| SEC_ALLOC
))
3122 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3123 != (SEC_CODE
| SEC_ALLOC
)
3124 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3125 == (SEC_CODE
| SEC_ALLOC
))
3128 if (synthetic_relocatable
)
3130 if (a
->section
->id
< b
->section
->id
)
3133 if (a
->section
->id
> b
->section
->id
)
3137 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3140 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3143 /* For syms with the same value, prefer strong dynamic global function
3144 syms over other syms. */
3145 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3148 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3151 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3154 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3157 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3160 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3163 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3166 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3172 /* Search SYMS for a symbol of the given VALUE. */
3175 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3179 if (id
== (unsigned) -1)
3183 mid
= (lo
+ hi
) >> 1;
3184 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3186 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3196 mid
= (lo
+ hi
) >> 1;
3197 if (syms
[mid
]->section
->id
< id
)
3199 else if (syms
[mid
]->section
->id
> id
)
3201 else if (syms
[mid
]->value
< value
)
3203 else if (syms
[mid
]->value
> value
)
3213 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3215 bfd_vma vma
= *(bfd_vma
*) ptr
;
3216 return ((section
->flags
& SEC_ALLOC
) != 0
3217 && section
->vma
<= vma
3218 && vma
< section
->vma
+ section
->size
);
3221 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3222 entry syms. Also generate @plt symbols for the glink branch table.
3223 Returns count of synthetic symbols in RET or -1 on error. */
3226 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3227 long static_count
, asymbol
**static_syms
,
3228 long dyn_count
, asymbol
**dyn_syms
,
3235 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3236 asection
*opd
= NULL
;
3237 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3239 int abi
= abiversion (abfd
);
3245 opd
= bfd_get_section_by_name (abfd
, ".opd");
3246 if (opd
== NULL
&& abi
== 1)
3250 symcount
= static_count
;
3252 symcount
+= dyn_count
;
3256 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3260 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3262 /* Use both symbol tables. */
3263 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3264 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3266 else if (!relocatable
&& static_count
== 0)
3267 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3269 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3271 synthetic_relocatable
= relocatable
;
3272 synthetic_opd
= opd
;
3273 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3275 if (!relocatable
&& symcount
> 1)
3278 /* Trim duplicate syms, since we may have merged the normal and
3279 dynamic symbols. Actually, we only care about syms that have
3280 different values, so trim any with the same value. */
3281 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3282 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3283 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3284 syms
[j
++] = syms
[i
];
3289 /* Note that here and in compare_symbols we can't compare opd and
3290 sym->section directly. With separate debug info files, the
3291 symbols will be extracted from the debug file while abfd passed
3292 to this function is the real binary. */
3293 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3297 for (; i
< symcount
; ++i
)
3298 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3299 != (SEC_CODE
| SEC_ALLOC
))
3300 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3304 for (; i
< symcount
; ++i
)
3305 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3310 for (; i
< symcount
; ++i
)
3311 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3315 for (; i
< symcount
; ++i
)
3316 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3317 != (SEC_CODE
| SEC_ALLOC
))
3325 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3330 if (opdsymend
== secsymend
)
3333 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3334 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3338 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3345 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3349 while (r
< opd
->relocation
+ relcount
3350 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3353 if (r
== opd
->relocation
+ relcount
)
3356 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3359 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3362 sym
= *r
->sym_ptr_ptr
;
3363 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3364 sym
->section
->id
, sym
->value
+ r
->addend
))
3367 size
+= sizeof (asymbol
);
3368 size
+= strlen (syms
[i
]->name
) + 2;
3374 s
= *ret
= bfd_malloc (size
);
3381 names
= (char *) (s
+ count
);
3383 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3387 while (r
< opd
->relocation
+ relcount
3388 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3391 if (r
== opd
->relocation
+ relcount
)
3394 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3397 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3400 sym
= *r
->sym_ptr_ptr
;
3401 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3402 sym
->section
->id
, sym
->value
+ r
->addend
))
3407 s
->flags
|= BSF_SYNTHETIC
;
3408 s
->section
= sym
->section
;
3409 s
->value
= sym
->value
+ r
->addend
;
3412 len
= strlen (syms
[i
]->name
);
3413 memcpy (names
, syms
[i
]->name
, len
+ 1);
3415 /* Have udata.p point back to the original symbol this
3416 synthetic symbol was derived from. */
3417 s
->udata
.p
= syms
[i
];
3424 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3425 bfd_byte
*contents
= NULL
;
3428 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3429 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3432 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3434 free_contents_and_exit_err
:
3436 free_contents_and_exit
:
3443 for (i
= secsymend
; i
< opdsymend
; ++i
)
3447 /* Ignore bogus symbols. */
3448 if (syms
[i
]->value
> opd
->size
- 8)
3451 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3452 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3455 size
+= sizeof (asymbol
);
3456 size
+= strlen (syms
[i
]->name
) + 2;
3460 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3462 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3464 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3466 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3468 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3469 goto free_contents_and_exit_err
;
3471 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3472 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3475 extdynend
= extdyn
+ dynamic
->size
;
3476 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3478 Elf_Internal_Dyn dyn
;
3479 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3481 if (dyn
.d_tag
== DT_NULL
)
3484 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3486 /* The first glink stub starts at offset 32; see
3487 comment in ppc64_elf_finish_dynamic_sections. */
3488 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3489 /* The .glink section usually does not survive the final
3490 link; search for the section (usually .text) where the
3491 glink stubs now reside. */
3492 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3503 /* Determine __glink trampoline by reading the relative branch
3504 from the first glink stub. */
3506 unsigned int off
= 0;
3508 while (bfd_get_section_contents (abfd
, glink
, buf
,
3509 glink_vma
+ off
- glink
->vma
, 4))
3511 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3513 if ((insn
& ~0x3fffffc) == 0)
3515 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3524 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3526 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3529 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3530 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3531 goto free_contents_and_exit_err
;
3533 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3534 size
+= plt_count
* sizeof (asymbol
);
3536 p
= relplt
->relocation
;
3537 for (i
= 0; i
< plt_count
; i
++, p
++)
3539 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3541 size
+= sizeof ("+0x") - 1 + 16;
3547 goto free_contents_and_exit
;
3548 s
= *ret
= bfd_malloc (size
);
3550 goto free_contents_and_exit_err
;
3552 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3554 for (i
= secsymend
; i
< opdsymend
; ++i
)
3558 if (syms
[i
]->value
> opd
->size
- 8)
3561 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3562 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3566 asection
*sec
= abfd
->sections
;
3573 long mid
= (lo
+ hi
) >> 1;
3574 if (syms
[mid
]->section
->vma
< ent
)
3576 else if (syms
[mid
]->section
->vma
> ent
)
3580 sec
= syms
[mid
]->section
;
3585 if (lo
>= hi
&& lo
> codesecsym
)
3586 sec
= syms
[lo
- 1]->section
;
3588 for (; sec
!= NULL
; sec
= sec
->next
)
3592 /* SEC_LOAD may not be set if SEC is from a separate debug
3594 if ((sec
->flags
& SEC_ALLOC
) == 0)
3596 if ((sec
->flags
& SEC_CODE
) != 0)
3599 s
->flags
|= BSF_SYNTHETIC
;
3600 s
->value
= ent
- s
->section
->vma
;
3603 len
= strlen (syms
[i
]->name
);
3604 memcpy (names
, syms
[i
]->name
, len
+ 1);
3606 /* Have udata.p point back to the original symbol this
3607 synthetic symbol was derived from. */
3608 s
->udata
.p
= syms
[i
];
3614 if (glink
!= NULL
&& relplt
!= NULL
)
3618 /* Add a symbol for the main glink trampoline. */
3619 memset (s
, 0, sizeof *s
);
3621 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3623 s
->value
= resolv_vma
- glink
->vma
;
3625 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3626 names
+= sizeof ("__glink_PLTresolve");
3631 /* FIXME: It would be very much nicer to put sym@plt on the
3632 stub rather than on the glink branch table entry. The
3633 objdump disassembler would then use a sensible symbol
3634 name on plt calls. The difficulty in doing so is
3635 a) finding the stubs, and,
3636 b) matching stubs against plt entries, and,
3637 c) there can be multiple stubs for a given plt entry.
3639 Solving (a) could be done by code scanning, but older
3640 ppc64 binaries used different stubs to current code.
3641 (b) is the tricky one since you need to known the toc
3642 pointer for at least one function that uses a pic stub to
3643 be able to calculate the plt address referenced.
3644 (c) means gdb would need to set multiple breakpoints (or
3645 find the glink branch itself) when setting breakpoints
3646 for pending shared library loads. */
3647 p
= relplt
->relocation
;
3648 for (i
= 0; i
< plt_count
; i
++, p
++)
3652 *s
= **p
->sym_ptr_ptr
;
3653 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3654 we are defining a symbol, ensure one of them is set. */
3655 if ((s
->flags
& BSF_LOCAL
) == 0)
3656 s
->flags
|= BSF_GLOBAL
;
3657 s
->flags
|= BSF_SYNTHETIC
;
3659 s
->value
= glink_vma
- glink
->vma
;
3662 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3663 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3667 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3668 names
+= sizeof ("+0x") - 1;
3669 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3670 names
+= strlen (names
);
3672 memcpy (names
, "@plt", sizeof ("@plt"));
3673 names
+= sizeof ("@plt");
3693 /* The following functions are specific to the ELF linker, while
3694 functions above are used generally. Those named ppc64_elf_* are
3695 called by the main ELF linker code. They appear in this file more
3696 or less in the order in which they are called. eg.
3697 ppc64_elf_check_relocs is called early in the link process,
3698 ppc64_elf_finish_dynamic_sections is one of the last functions
3701 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3702 functions have both a function code symbol and a function descriptor
3703 symbol. A call to foo in a relocatable object file looks like:
3710 The function definition in another object file might be:
3714 . .quad .TOC.@tocbase
3720 When the linker resolves the call during a static link, the branch
3721 unsurprisingly just goes to .foo and the .opd information is unused.
3722 If the function definition is in a shared library, things are a little
3723 different: The call goes via a plt call stub, the opd information gets
3724 copied to the plt, and the linker patches the nop.
3732 . std 2,40(1) # in practice, the call stub
3733 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3734 . addi 11,11,Lfoo@toc@l # this is the general idea
3742 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3744 The "reloc ()" notation is supposed to indicate that the linker emits
3745 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3748 What are the difficulties here? Well, firstly, the relocations
3749 examined by the linker in check_relocs are against the function code
3750 sym .foo, while the dynamic relocation in the plt is emitted against
3751 the function descriptor symbol, foo. Somewhere along the line, we need
3752 to carefully copy dynamic link information from one symbol to the other.
3753 Secondly, the generic part of the elf linker will make .foo a dynamic
3754 symbol as is normal for most other backends. We need foo dynamic
3755 instead, at least for an application final link. However, when
3756 creating a shared library containing foo, we need to have both symbols
3757 dynamic so that references to .foo are satisfied during the early
3758 stages of linking. Otherwise the linker might decide to pull in a
3759 definition from some other object, eg. a static library.
3761 Update: As of August 2004, we support a new convention. Function
3762 calls may use the function descriptor symbol, ie. "bl foo". This
3763 behaves exactly as "bl .foo". */
3765 /* Of those relocs that might be copied as dynamic relocs, this function
3766 selects those that must be copied when linking a shared library,
3767 even when the symbol is local. */
3770 must_be_dyn_reloc (struct bfd_link_info
*info
,
3771 enum elf_ppc64_reloc_type r_type
)
3783 case R_PPC64_TPREL16
:
3784 case R_PPC64_TPREL16_LO
:
3785 case R_PPC64_TPREL16_HI
:
3786 case R_PPC64_TPREL16_HA
:
3787 case R_PPC64_TPREL16_DS
:
3788 case R_PPC64_TPREL16_LO_DS
:
3789 case R_PPC64_TPREL16_HIGH
:
3790 case R_PPC64_TPREL16_HIGHA
:
3791 case R_PPC64_TPREL16_HIGHER
:
3792 case R_PPC64_TPREL16_HIGHERA
:
3793 case R_PPC64_TPREL16_HIGHEST
:
3794 case R_PPC64_TPREL16_HIGHESTA
:
3795 case R_PPC64_TPREL64
:
3796 return !bfd_link_executable (info
);
3800 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3801 copying dynamic variables from a shared lib into an app's dynbss
3802 section, and instead use a dynamic relocation to point into the
3803 shared lib. With code that gcc generates, it's vital that this be
3804 enabled; In the PowerPC64 ABI, the address of a function is actually
3805 the address of a function descriptor, which resides in the .opd
3806 section. gcc uses the descriptor directly rather than going via the
3807 GOT as some other ABI's do, which means that initialized function
3808 pointers must reference the descriptor. Thus, a function pointer
3809 initialized to the address of a function in a shared library will
3810 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3811 redefines the function descriptor symbol to point to the copy. This
3812 presents a problem as a plt entry for that function is also
3813 initialized from the function descriptor symbol and the copy reloc
3814 may not be initialized first. */
3815 #define ELIMINATE_COPY_RELOCS 1
3817 /* Section name for stubs is the associated section name plus this
3819 #define STUB_SUFFIX ".stub"
3822 ppc_stub_long_branch:
3823 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3824 destination, but a 24 bit branch in a stub section will reach.
3827 ppc_stub_plt_branch:
3828 Similar to the above, but a 24 bit branch in the stub section won't
3829 reach its destination.
3830 . addis %r11,%r2,xxx@toc@ha
3831 . ld %r12,xxx@toc@l(%r11)
3836 Used to call a function in a shared library. If it so happens that
3837 the plt entry referenced crosses a 64k boundary, then an extra
3838 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3840 . addis %r11,%r2,xxx@toc@ha
3841 . ld %r12,xxx+0@toc@l(%r11)
3843 . ld %r2,xxx+8@toc@l(%r11)
3844 . ld %r11,xxx+16@toc@l(%r11)
3847 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3848 code to adjust the value and save r2 to support multiple toc sections.
3849 A ppc_stub_long_branch with an r2 offset looks like:
3851 . addis %r2,%r2,off@ha
3852 . addi %r2,%r2,off@l
3855 A ppc_stub_plt_branch with an r2 offset looks like:
3857 . addis %r11,%r2,xxx@toc@ha
3858 . ld %r12,xxx@toc@l(%r11)
3859 . addis %r2,%r2,off@ha
3860 . addi %r2,%r2,off@l
3864 In cases where the "addis" instruction would add zero, the "addis" is
3865 omitted and following instructions modified slightly in some cases.
3868 enum ppc_stub_type
{
3870 ppc_stub_long_branch
,
3871 ppc_stub_long_branch_r2off
,
3872 ppc_stub_plt_branch
,
3873 ppc_stub_plt_branch_r2off
,
3875 ppc_stub_plt_call_r2save
,
3876 ppc_stub_global_entry
,
3880 /* Information on stub grouping. */
3883 /* The stub section. */
3885 /* This is the section to which stubs in the group will be attached. */
3888 struct map_stub
*next
;
3889 /* Whether to emit a copy of register save/restore functions in this
3894 struct ppc_stub_hash_entry
{
3896 /* Base hash table entry structure. */
3897 struct bfd_hash_entry root
;
3899 enum ppc_stub_type stub_type
;
3901 /* Group information. */
3902 struct map_stub
*group
;
3904 /* Offset within stub_sec of the beginning of this stub. */
3905 bfd_vma stub_offset
;
3907 /* Given the symbol's value and its section we can determine its final
3908 value when building the stubs (so the stub knows where to jump. */
3909 bfd_vma target_value
;
3910 asection
*target_section
;
3912 /* The symbol table entry, if any, that this was derived from. */
3913 struct ppc_link_hash_entry
*h
;
3914 struct plt_entry
*plt_ent
;
3916 /* Symbol st_other. */
3917 unsigned char other
;
3920 struct ppc_branch_hash_entry
{
3922 /* Base hash table entry structure. */
3923 struct bfd_hash_entry root
;
3925 /* Offset within branch lookup table. */
3926 unsigned int offset
;
3928 /* Generation marker. */
3932 /* Used to track dynamic relocations for local symbols. */
3933 struct ppc_dyn_relocs
3935 struct ppc_dyn_relocs
*next
;
3937 /* The input section of the reloc. */
3940 /* Total number of relocs copied for the input section. */
3941 unsigned int count
: 31;
3943 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3944 unsigned int ifunc
: 1;
3947 struct ppc_link_hash_entry
3949 struct elf_link_hash_entry elf
;
3952 /* A pointer to the most recently used stub hash entry against this
3954 struct ppc_stub_hash_entry
*stub_cache
;
3956 /* A pointer to the next symbol starting with a '.' */
3957 struct ppc_link_hash_entry
*next_dot_sym
;
3960 /* Track dynamic relocs copied for this symbol. */
3961 struct elf_dyn_relocs
*dyn_relocs
;
3963 /* Chain of aliases referring to a weakdef. */
3964 struct ppc_link_hash_entry
*weakref
;
3966 /* Link between function code and descriptor symbols. */
3967 struct ppc_link_hash_entry
*oh
;
3969 /* Flag function code and descriptor symbols. */
3970 unsigned int is_func
:1;
3971 unsigned int is_func_descriptor
:1;
3972 unsigned int fake
:1;
3974 /* Whether global opd/toc sym has been adjusted or not.
3975 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3976 should be set for all globals defined in any opd/toc section. */
3977 unsigned int adjust_done
:1;
3979 /* Set if we twiddled this symbol to weak at some stage. */
3980 unsigned int was_undefined
:1;
3982 /* Set if this is an out-of-line register save/restore function,
3983 with non-standard calling convention. */
3984 unsigned int save_res
:1;
3986 /* Contexts in which symbol is used in the GOT (or TOC).
3987 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3988 corresponding relocs are encountered during check_relocs.
3989 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3990 indicate the corresponding GOT entry type is not needed.
3991 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3992 a TPREL one. We use a separate flag rather than setting TPREL
3993 just for convenience in distinguishing the two cases. */
3994 #define TLS_GD 1 /* GD reloc. */
3995 #define TLS_LD 2 /* LD reloc. */
3996 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3997 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3998 #define TLS_TLS 16 /* Any TLS reloc. */
3999 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4000 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4001 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4002 unsigned char tls_mask
;
4005 /* ppc64 ELF linker hash table. */
4007 struct ppc_link_hash_table
4009 struct elf_link_hash_table elf
;
4011 /* The stub hash table. */
4012 struct bfd_hash_table stub_hash_table
;
4014 /* Another hash table for plt_branch stubs. */
4015 struct bfd_hash_table branch_hash_table
;
4017 /* Hash table for function prologue tocsave. */
4018 htab_t tocsave_htab
;
4020 /* Various options and other info passed from the linker. */
4021 struct ppc64_elf_params
*params
;
4023 /* The size of sec_info below. */
4024 unsigned int sec_info_arr_size
;
4026 /* Per-section array of extra section info. Done this way rather
4027 than as part of ppc64_elf_section_data so we have the info for
4028 non-ppc64 sections. */
4031 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4036 /* The section group that this section belongs to. */
4037 struct map_stub
*group
;
4038 /* A temp section list pointer. */
4043 /* Linked list of groups. */
4044 struct map_stub
*group
;
4046 /* Temp used when calculating TOC pointers. */
4049 asection
*toc_first_sec
;
4051 /* Used when adding symbols. */
4052 struct ppc_link_hash_entry
*dot_syms
;
4054 /* 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 /* Temp used by ppc64_elf_before_check_relocs. */
4089 unsigned int twiddled_syms
: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 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4592 section
->owner
, stub_name
);
4596 stub_entry
->group
= group
;
4597 stub_entry
->stub_offset
= 0;
4601 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4602 not already done. */
4605 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4607 asection
*got
, *relgot
;
4609 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4611 if (!is_ppc64_elf (abfd
))
4617 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4620 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4621 | SEC_LINKER_CREATED
);
4623 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4625 || !bfd_set_section_alignment (abfd
, got
, 3))
4628 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4629 flags
| SEC_READONLY
);
4631 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4634 ppc64_elf_tdata (abfd
)->got
= got
;
4635 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4639 /* Create the dynamic sections, and set up shortcuts. */
4642 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4644 struct ppc_link_hash_table
*htab
;
4646 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4649 htab
= ppc_hash_table (info
);
4653 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4654 if (!bfd_link_pic (info
))
4655 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4657 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4658 || (!bfd_link_pic (info
) && !htab
->relbss
))
4664 /* Follow indirect and warning symbol links. */
4666 static inline struct bfd_link_hash_entry
*
4667 follow_link (struct bfd_link_hash_entry
*h
)
4669 while (h
->type
== bfd_link_hash_indirect
4670 || h
->type
== bfd_link_hash_warning
)
4675 static inline struct elf_link_hash_entry
*
4676 elf_follow_link (struct elf_link_hash_entry
*h
)
4678 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4681 static inline struct ppc_link_hash_entry
*
4682 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4684 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4687 /* Merge PLT info on FROM with that on TO. */
4690 move_plt_plist (struct ppc_link_hash_entry
*from
,
4691 struct ppc_link_hash_entry
*to
)
4693 if (from
->elf
.plt
.plist
!= NULL
)
4695 if (to
->elf
.plt
.plist
!= NULL
)
4697 struct plt_entry
**entp
;
4698 struct plt_entry
*ent
;
4700 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4702 struct plt_entry
*dent
;
4704 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4705 if (dent
->addend
== ent
->addend
)
4707 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4714 *entp
= to
->elf
.plt
.plist
;
4717 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4718 from
->elf
.plt
.plist
= NULL
;
4722 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4725 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4726 struct elf_link_hash_entry
*dir
,
4727 struct elf_link_hash_entry
*ind
)
4729 struct ppc_link_hash_entry
*edir
, *eind
;
4731 edir
= (struct ppc_link_hash_entry
*) dir
;
4732 eind
= (struct ppc_link_hash_entry
*) ind
;
4734 edir
->is_func
|= eind
->is_func
;
4735 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4736 edir
->tls_mask
|= eind
->tls_mask
;
4737 if (eind
->oh
!= NULL
)
4738 edir
->oh
= ppc_follow_link (eind
->oh
);
4740 /* If called to transfer flags for a weakdef during processing
4741 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4742 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4743 if (!(ELIMINATE_COPY_RELOCS
4744 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4745 && edir
->elf
.dynamic_adjusted
))
4746 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4748 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4749 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4750 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4751 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4752 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4754 /* If we were called to copy over info for a weak sym, don't copy
4755 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4756 in order to simplify readonly_dynrelocs and save a field in the
4757 symbol hash entry, but that means dyn_relocs can't be used in any
4758 tests about a specific symbol, or affect other symbol flags which
4760 Chain weakdefs so we can get from the weakdef back to an alias.
4761 The list is circular so that we don't need to use u.weakdef as
4762 well as this list to look at all aliases. */
4763 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4765 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4770 cur
= edir
->weakref
;
4775 /* We can be called twice for the same symbols.
4776 Don't make multiple loops. */
4780 } while (cur
!= edir
);
4782 next
= add
->weakref
;
4785 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4786 edir
->weakref
= add
;
4789 } while (add
!= NULL
&& add
!= eind
);
4793 /* Copy over any dynamic relocs we may have on the indirect sym. */
4794 if (eind
->dyn_relocs
!= NULL
)
4796 if (edir
->dyn_relocs
!= NULL
)
4798 struct elf_dyn_relocs
**pp
;
4799 struct elf_dyn_relocs
*p
;
4801 /* Add reloc counts against the indirect sym to the direct sym
4802 list. Merge any entries against the same section. */
4803 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4805 struct elf_dyn_relocs
*q
;
4807 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4808 if (q
->sec
== p
->sec
)
4810 q
->pc_count
+= p
->pc_count
;
4811 q
->count
+= p
->count
;
4818 *pp
= edir
->dyn_relocs
;
4821 edir
->dyn_relocs
= eind
->dyn_relocs
;
4822 eind
->dyn_relocs
= NULL
;
4825 /* Copy over got entries that we may have already seen to the
4826 symbol which just became indirect. */
4827 if (eind
->elf
.got
.glist
!= NULL
)
4829 if (edir
->elf
.got
.glist
!= NULL
)
4831 struct got_entry
**entp
;
4832 struct got_entry
*ent
;
4834 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4836 struct got_entry
*dent
;
4838 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4839 if (dent
->addend
== ent
->addend
4840 && dent
->owner
== ent
->owner
4841 && dent
->tls_type
== ent
->tls_type
)
4843 dent
->got
.refcount
+= ent
->got
.refcount
;
4850 *entp
= edir
->elf
.got
.glist
;
4853 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4854 eind
->elf
.got
.glist
= NULL
;
4857 /* And plt entries. */
4858 move_plt_plist (eind
, edir
);
4860 if (eind
->elf
.dynindx
!= -1)
4862 if (edir
->elf
.dynindx
!= -1)
4863 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4864 edir
->elf
.dynstr_index
);
4865 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4866 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4867 eind
->elf
.dynindx
= -1;
4868 eind
->elf
.dynstr_index
= 0;
4872 /* Find the function descriptor hash entry from the given function code
4873 hash entry FH. Link the entries via their OH fields. */
4875 static struct ppc_link_hash_entry
*
4876 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4878 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4882 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4884 fdh
= (struct ppc_link_hash_entry
*)
4885 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4889 fdh
->is_func_descriptor
= 1;
4895 return ppc_follow_link (fdh
);
4898 /* Make a fake function descriptor sym for the code sym FH. */
4900 static struct ppc_link_hash_entry
*
4901 make_fdh (struct bfd_link_info
*info
,
4902 struct ppc_link_hash_entry
*fh
)
4906 struct bfd_link_hash_entry
*bh
;
4907 struct ppc_link_hash_entry
*fdh
;
4909 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4910 newsym
= bfd_make_empty_symbol (abfd
);
4911 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4912 newsym
->section
= bfd_und_section_ptr
;
4914 newsym
->flags
= BSF_WEAK
;
4917 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4918 newsym
->flags
, newsym
->section
,
4919 newsym
->value
, NULL
, FALSE
, FALSE
,
4923 fdh
= (struct ppc_link_hash_entry
*) bh
;
4924 fdh
->elf
.non_elf
= 0;
4926 fdh
->is_func_descriptor
= 1;
4933 /* Fix function descriptor symbols defined in .opd sections to be
4937 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4938 struct bfd_link_info
*info
,
4939 Elf_Internal_Sym
*isym
,
4941 flagword
*flags ATTRIBUTE_UNUSED
,
4945 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4946 && (ibfd
->flags
& DYNAMIC
) == 0
4947 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4948 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4951 && strcmp ((*sec
)->name
, ".opd") == 0)
4955 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4956 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4957 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4959 /* If the symbol is a function defined in .opd, and the function
4960 code is in a discarded group, let it appear to be undefined. */
4961 if (!bfd_link_relocatable (info
)
4962 && (*sec
)->reloc_count
!= 0
4963 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4964 FALSE
) != (bfd_vma
) -1
4965 && discarded_section (code_sec
))
4967 *sec
= bfd_und_section_ptr
;
4968 isym
->st_shndx
= SHN_UNDEF
;
4971 else if (*sec
!= NULL
4972 && strcmp ((*sec
)->name
, ".toc") == 0
4973 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4975 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4977 htab
->params
->object_in_toc
= 1;
4980 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4982 if (abiversion (ibfd
) == 0)
4983 set_abiversion (ibfd
, 2);
4984 else if (abiversion (ibfd
) == 1)
4986 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4987 " for ABI version 1\n"), name
);
4988 bfd_set_error (bfd_error_bad_value
);
4996 /* Merge non-visibility st_other attributes: local entry point. */
4999 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5000 const Elf_Internal_Sym
*isym
,
5001 bfd_boolean definition
,
5002 bfd_boolean dynamic
)
5004 if (definition
&& !dynamic
)
5005 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5006 | ELF_ST_VISIBILITY (h
->other
));
5009 /* This function makes an old ABI object reference to ".bar" cause the
5010 inclusion of a new ABI object archive that defines "bar".
5011 NAME is a symbol defined in an archive. Return a symbol in the hash
5012 table that might be satisfied by the archive symbols. */
5014 static struct elf_link_hash_entry
*
5015 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5016 struct bfd_link_info
*info
,
5019 struct elf_link_hash_entry
*h
;
5023 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5025 /* Don't return this sym if it is a fake function descriptor
5026 created by add_symbol_adjust. */
5027 && !(h
->root
.type
== bfd_link_hash_undefweak
5028 && ((struct ppc_link_hash_entry
*) h
)->fake
))
5034 len
= strlen (name
);
5035 dot_name
= bfd_alloc (abfd
, len
+ 2);
5036 if (dot_name
== NULL
)
5037 return (struct elf_link_hash_entry
*) 0 - 1;
5039 memcpy (dot_name
+ 1, name
, len
+ 1);
5040 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5041 bfd_release (abfd
, dot_name
);
5045 /* This function satisfies all old ABI object references to ".bar" if a
5046 new ABI object defines "bar". Well, at least, undefined dot symbols
5047 are made weak. This stops later archive searches from including an
5048 object if we already have a function descriptor definition. It also
5049 prevents the linker complaining about undefined symbols.
5050 We also check and correct mismatched symbol visibility here. The
5051 most restrictive visibility of the function descriptor and the
5052 function entry symbol is used. */
5055 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5057 struct ppc_link_hash_table
*htab
;
5058 struct ppc_link_hash_entry
*fdh
;
5060 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5063 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5064 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5066 if (eh
->elf
.root
.root
.string
[0] != '.')
5069 htab
= ppc_hash_table (info
);
5073 fdh
= lookup_fdh (eh
, htab
);
5076 if (!bfd_link_relocatable (info
)
5077 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5078 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5079 && eh
->elf
.ref_regular
)
5081 /* Make an undefweak function descriptor sym, which is enough to
5082 pull in an --as-needed shared lib, but won't cause link
5083 errors. Archives are handled elsewhere. */
5084 fdh
= make_fdh (info
, eh
);
5087 fdh
->elf
.ref_regular
= 1;
5092 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5093 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5094 if (entry_vis
< descr_vis
)
5095 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5096 else if (entry_vis
> descr_vis
)
5097 eh
->elf
.other
+= descr_vis
- entry_vis
;
5099 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
5100 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5101 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
5103 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
5104 eh
->was_undefined
= 1;
5105 htab
->twiddled_syms
= 1;
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 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5130 ibfd
, abiversion (ibfd
));
5131 bfd_set_error (bfd_error_bad_value
);
5135 if ((ibfd
->flags
& DYNAMIC
) == 0
5136 && (opd
->flags
& SEC_RELOC
) != 0
5137 && opd
->reloc_count
!= 0
5138 && !bfd_is_abs_section (opd
->output_section
))
5140 /* Garbage collection needs some extra help with .opd sections.
5141 We don't want to necessarily keep everything referenced by
5142 relocs in .opd, as that would keep all functions. Instead,
5143 if we reference an .opd symbol (a function descriptor), we
5144 want to keep the function code symbol's section. This is
5145 easy for global symbols, but for local syms we need to keep
5146 information about the associated function section. */
5148 asection
**opd_sym_map
;
5150 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5151 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5152 if (opd_sym_map
== NULL
)
5154 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5155 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5156 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5160 if (!is_ppc64_elf (info
->output_bfd
))
5162 htab
= ppc_hash_table (info
);
5166 /* For input files without an explicit abiversion in e_flags
5167 we should have flagged any with symbol st_other bits set
5168 as ELFv1 and above flagged those with .opd as ELFv2.
5169 Set the output abiversion if not yet set, and for any input
5170 still ambiguous, take its abiversion from the output.
5171 Differences in ABI are reported later. */
5172 if (abiversion (info
->output_bfd
) == 0)
5173 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5174 else if (abiversion (ibfd
) == 0)
5175 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5177 p
= &htab
->dot_syms
;
5178 while ((eh
= *p
) != NULL
)
5181 if (&eh
->elf
== htab
->elf
.hgot
)
5183 else if (htab
->elf
.hgot
== NULL
5184 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5185 htab
->elf
.hgot
= &eh
->elf
;
5186 else if (!add_symbol_adjust (eh
, info
))
5188 p
= &eh
->u
.next_dot_sym
;
5191 /* Clear the list for non-ppc64 input files. */
5192 p
= &htab
->dot_syms
;
5193 while ((eh
= *p
) != NULL
)
5196 p
= &eh
->u
.next_dot_sym
;
5199 /* We need to fix the undefs list for any syms we have twiddled to
5201 if (htab
->twiddled_syms
)
5203 bfd_link_repair_undef_list (&htab
->elf
.root
);
5204 htab
->twiddled_syms
= 0;
5209 /* Undo hash table changes when an --as-needed input file is determined
5210 not to be needed. */
5213 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5214 struct bfd_link_info
*info
,
5215 enum notice_asneeded_action act
)
5217 if (act
== notice_not_needed
)
5219 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5224 htab
->dot_syms
= NULL
;
5226 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5229 /* If --just-symbols against a final linked binary, then assume we need
5230 toc adjusting stubs when calling functions defined there. */
5233 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5235 if ((sec
->flags
& SEC_CODE
) != 0
5236 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5237 && is_ppc64_elf (sec
->owner
))
5239 if (abiversion (sec
->owner
) >= 2
5240 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5241 sec
->has_toc_reloc
= 1;
5243 _bfd_elf_link_just_syms (sec
, info
);
5246 static struct plt_entry
**
5247 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5248 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5250 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5251 struct plt_entry
**local_plt
;
5252 unsigned char *local_got_tls_masks
;
5254 if (local_got_ents
== NULL
)
5256 bfd_size_type size
= symtab_hdr
->sh_info
;
5258 size
*= (sizeof (*local_got_ents
)
5259 + sizeof (*local_plt
)
5260 + sizeof (*local_got_tls_masks
));
5261 local_got_ents
= bfd_zalloc (abfd
, size
);
5262 if (local_got_ents
== NULL
)
5264 elf_local_got_ents (abfd
) = local_got_ents
;
5267 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5269 struct got_entry
*ent
;
5271 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5272 if (ent
->addend
== r_addend
5273 && ent
->owner
== abfd
5274 && ent
->tls_type
== tls_type
)
5278 bfd_size_type amt
= sizeof (*ent
);
5279 ent
= bfd_alloc (abfd
, amt
);
5282 ent
->next
= local_got_ents
[r_symndx
];
5283 ent
->addend
= r_addend
;
5285 ent
->tls_type
= tls_type
;
5286 ent
->is_indirect
= FALSE
;
5287 ent
->got
.refcount
= 0;
5288 local_got_ents
[r_symndx
] = ent
;
5290 ent
->got
.refcount
+= 1;
5293 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5294 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5295 local_got_tls_masks
[r_symndx
] |= tls_type
;
5297 return local_plt
+ r_symndx
;
5301 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5303 struct plt_entry
*ent
;
5305 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5306 if (ent
->addend
== addend
)
5310 bfd_size_type amt
= sizeof (*ent
);
5311 ent
= bfd_alloc (abfd
, amt
);
5315 ent
->addend
= addend
;
5316 ent
->plt
.refcount
= 0;
5319 ent
->plt
.refcount
+= 1;
5324 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5326 return (r_type
== R_PPC64_REL24
5327 || r_type
== R_PPC64_REL14
5328 || r_type
== R_PPC64_REL14_BRTAKEN
5329 || r_type
== R_PPC64_REL14_BRNTAKEN
5330 || r_type
== R_PPC64_ADDR24
5331 || r_type
== R_PPC64_ADDR14
5332 || r_type
== R_PPC64_ADDR14_BRTAKEN
5333 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5336 /* Look through the relocs for a section during the first phase, and
5337 calculate needed space in the global offset table, procedure
5338 linkage table, and dynamic reloc sections. */
5341 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5342 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5344 struct ppc_link_hash_table
*htab
;
5345 Elf_Internal_Shdr
*symtab_hdr
;
5346 struct elf_link_hash_entry
**sym_hashes
;
5347 const Elf_Internal_Rela
*rel
;
5348 const Elf_Internal_Rela
*rel_end
;
5350 asection
**opd_sym_map
;
5351 struct elf_link_hash_entry
*tga
, *dottga
;
5353 if (bfd_link_relocatable (info
))
5356 /* Don't do anything special with non-loaded, non-alloced sections.
5357 In particular, any relocs in such sections should not affect GOT
5358 and PLT reference counting (ie. we don't allow them to create GOT
5359 or PLT entries), there's no possibility or desire to optimize TLS
5360 relocs, and there's not much point in propagating relocs to shared
5361 libs that the dynamic linker won't relocate. */
5362 if ((sec
->flags
& SEC_ALLOC
) == 0)
5365 BFD_ASSERT (is_ppc64_elf (abfd
));
5367 htab
= ppc_hash_table (info
);
5371 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5372 FALSE
, FALSE
, TRUE
);
5373 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5374 FALSE
, FALSE
, TRUE
);
5375 symtab_hdr
= &elf_symtab_hdr (abfd
);
5376 sym_hashes
= elf_sym_hashes (abfd
);
5379 if (ppc64_elf_section_data (sec
) != NULL
5380 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5381 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5383 rel_end
= relocs
+ sec
->reloc_count
;
5384 for (rel
= relocs
; rel
< rel_end
; rel
++)
5386 unsigned long r_symndx
;
5387 struct elf_link_hash_entry
*h
;
5388 enum elf_ppc64_reloc_type r_type
;
5390 struct _ppc64_elf_section_data
*ppc64_sec
;
5391 struct plt_entry
**ifunc
, **plt_list
;
5393 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5394 if (r_symndx
< symtab_hdr
->sh_info
)
5398 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5399 h
= elf_follow_link (h
);
5401 /* PR15323, ref flags aren't set for references in the same
5403 h
->root
.non_ir_ref
= 1;
5405 if (h
== htab
->elf
.hgot
)
5406 sec
->has_toc_reloc
= 1;
5413 if (h
->type
== STT_GNU_IFUNC
)
5416 ifunc
= &h
->plt
.plist
;
5421 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5426 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5428 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5429 rel
->r_addend
, PLT_IFUNC
);
5435 r_type
= ELF64_R_TYPE (rel
->r_info
);
5440 /* These special tls relocs tie a call to __tls_get_addr with
5441 its parameter symbol. */
5444 case R_PPC64_GOT_TLSLD16
:
5445 case R_PPC64_GOT_TLSLD16_LO
:
5446 case R_PPC64_GOT_TLSLD16_HI
:
5447 case R_PPC64_GOT_TLSLD16_HA
:
5448 tls_type
= TLS_TLS
| TLS_LD
;
5451 case R_PPC64_GOT_TLSGD16
:
5452 case R_PPC64_GOT_TLSGD16_LO
:
5453 case R_PPC64_GOT_TLSGD16_HI
:
5454 case R_PPC64_GOT_TLSGD16_HA
:
5455 tls_type
= TLS_TLS
| TLS_GD
;
5458 case R_PPC64_GOT_TPREL16_DS
:
5459 case R_PPC64_GOT_TPREL16_LO_DS
:
5460 case R_PPC64_GOT_TPREL16_HI
:
5461 case R_PPC64_GOT_TPREL16_HA
:
5462 if (bfd_link_pic (info
))
5463 info
->flags
|= DF_STATIC_TLS
;
5464 tls_type
= TLS_TLS
| TLS_TPREL
;
5467 case R_PPC64_GOT_DTPREL16_DS
:
5468 case R_PPC64_GOT_DTPREL16_LO_DS
:
5469 case R_PPC64_GOT_DTPREL16_HI
:
5470 case R_PPC64_GOT_DTPREL16_HA
:
5471 tls_type
= TLS_TLS
| TLS_DTPREL
;
5473 sec
->has_tls_reloc
= 1;
5477 case R_PPC64_GOT16_DS
:
5478 case R_PPC64_GOT16_HA
:
5479 case R_PPC64_GOT16_HI
:
5480 case R_PPC64_GOT16_LO
:
5481 case R_PPC64_GOT16_LO_DS
:
5482 /* This symbol requires a global offset table entry. */
5483 sec
->has_toc_reloc
= 1;
5484 if (r_type
== R_PPC64_GOT_TLSLD16
5485 || r_type
== R_PPC64_GOT_TLSGD16
5486 || r_type
== R_PPC64_GOT_TPREL16_DS
5487 || r_type
== R_PPC64_GOT_DTPREL16_DS
5488 || r_type
== R_PPC64_GOT16
5489 || r_type
== R_PPC64_GOT16_DS
)
5491 htab
->do_multi_toc
= 1;
5492 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5495 if (ppc64_elf_tdata (abfd
)->got
== NULL
5496 && !create_got_section (abfd
, info
))
5501 struct ppc_link_hash_entry
*eh
;
5502 struct got_entry
*ent
;
5504 eh
= (struct ppc_link_hash_entry
*) h
;
5505 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5506 if (ent
->addend
== rel
->r_addend
5507 && ent
->owner
== abfd
5508 && ent
->tls_type
== tls_type
)
5512 bfd_size_type amt
= sizeof (*ent
);
5513 ent
= bfd_alloc (abfd
, amt
);
5516 ent
->next
= eh
->elf
.got
.glist
;
5517 ent
->addend
= rel
->r_addend
;
5519 ent
->tls_type
= tls_type
;
5520 ent
->is_indirect
= FALSE
;
5521 ent
->got
.refcount
= 0;
5522 eh
->elf
.got
.glist
= ent
;
5524 ent
->got
.refcount
+= 1;
5525 eh
->tls_mask
|= tls_type
;
5528 /* This is a global offset table entry for a local symbol. */
5529 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5530 rel
->r_addend
, tls_type
))
5533 /* We may also need a plt entry if the symbol turns out to be
5535 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5537 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5542 case R_PPC64_PLT16_HA
:
5543 case R_PPC64_PLT16_HI
:
5544 case R_PPC64_PLT16_LO
:
5547 /* This symbol requires a procedure linkage table entry. */
5552 if (h
->root
.root
.string
[0] == '.'
5553 && h
->root
.root
.string
[1] != '\0')
5554 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5555 plt_list
= &h
->plt
.plist
;
5557 if (plt_list
== NULL
)
5559 /* It does not make sense to have a procedure linkage
5560 table entry for a non-ifunc local symbol. */
5561 info
->callbacks
->einfo
5562 (_("%P: %H: %s reloc against local symbol\n"),
5563 abfd
, sec
, rel
->r_offset
,
5564 ppc64_elf_howto_table
[r_type
]->name
);
5565 bfd_set_error (bfd_error_bad_value
);
5568 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5572 /* The following relocations don't need to propagate the
5573 relocation if linking a shared object since they are
5574 section relative. */
5575 case R_PPC64_SECTOFF
:
5576 case R_PPC64_SECTOFF_LO
:
5577 case R_PPC64_SECTOFF_HI
:
5578 case R_PPC64_SECTOFF_HA
:
5579 case R_PPC64_SECTOFF_DS
:
5580 case R_PPC64_SECTOFF_LO_DS
:
5581 case R_PPC64_DTPREL16
:
5582 case R_PPC64_DTPREL16_LO
:
5583 case R_PPC64_DTPREL16_HI
:
5584 case R_PPC64_DTPREL16_HA
:
5585 case R_PPC64_DTPREL16_DS
:
5586 case R_PPC64_DTPREL16_LO_DS
:
5587 case R_PPC64_DTPREL16_HIGH
:
5588 case R_PPC64_DTPREL16_HIGHA
:
5589 case R_PPC64_DTPREL16_HIGHER
:
5590 case R_PPC64_DTPREL16_HIGHERA
:
5591 case R_PPC64_DTPREL16_HIGHEST
:
5592 case R_PPC64_DTPREL16_HIGHESTA
:
5597 case R_PPC64_REL16_LO
:
5598 case R_PPC64_REL16_HI
:
5599 case R_PPC64_REL16_HA
:
5600 case R_PPC64_REL16DX_HA
:
5603 /* Not supported as a dynamic relocation. */
5604 case R_PPC64_ADDR64_LOCAL
:
5605 if (bfd_link_pic (info
))
5607 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5609 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5610 "in shared libraries and PIEs.\n"),
5611 abfd
, sec
, rel
->r_offset
,
5612 ppc64_elf_howto_table
[r_type
]->name
);
5613 bfd_set_error (bfd_error_bad_value
);
5619 case R_PPC64_TOC16_DS
:
5620 htab
->do_multi_toc
= 1;
5621 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5622 case R_PPC64_TOC16_LO
:
5623 case R_PPC64_TOC16_HI
:
5624 case R_PPC64_TOC16_HA
:
5625 case R_PPC64_TOC16_LO_DS
:
5626 sec
->has_toc_reloc
= 1;
5633 /* This relocation describes the C++ object vtable hierarchy.
5634 Reconstruct it for later use during GC. */
5635 case R_PPC64_GNU_VTINHERIT
:
5636 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5640 /* This relocation describes which C++ vtable entries are actually
5641 used. Record for later use during GC. */
5642 case R_PPC64_GNU_VTENTRY
:
5643 BFD_ASSERT (h
!= NULL
);
5645 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5650 case R_PPC64_REL14_BRTAKEN
:
5651 case R_PPC64_REL14_BRNTAKEN
:
5653 asection
*dest
= NULL
;
5655 /* Heuristic: If jumping outside our section, chances are
5656 we are going to need a stub. */
5659 /* If the sym is weak it may be overridden later, so
5660 don't assume we know where a weak sym lives. */
5661 if (h
->root
.type
== bfd_link_hash_defined
)
5662 dest
= h
->root
.u
.def
.section
;
5666 Elf_Internal_Sym
*isym
;
5668 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5673 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5677 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5686 if (h
->root
.root
.string
[0] == '.'
5687 && h
->root
.root
.string
[1] != '\0')
5688 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5690 if (h
== tga
|| h
== dottga
)
5692 sec
->has_tls_reloc
= 1;
5694 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5695 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5696 /* We have a new-style __tls_get_addr call with
5700 /* Mark this section as having an old-style call. */
5701 sec
->has_tls_get_addr_call
= 1;
5703 plt_list
= &h
->plt
.plist
;
5706 /* We may need a .plt entry if the function this reloc
5707 refers to is in a shared lib. */
5709 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5713 case R_PPC64_ADDR14
:
5714 case R_PPC64_ADDR14_BRNTAKEN
:
5715 case R_PPC64_ADDR14_BRTAKEN
:
5716 case R_PPC64_ADDR24
:
5719 case R_PPC64_TPREL64
:
5720 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5721 if (bfd_link_pic (info
))
5722 info
->flags
|= DF_STATIC_TLS
;
5725 case R_PPC64_DTPMOD64
:
5726 if (rel
+ 1 < rel_end
5727 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5728 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5729 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5731 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5734 case R_PPC64_DTPREL64
:
5735 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5737 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5738 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5739 /* This is the second reloc of a dtpmod, dtprel pair.
5740 Don't mark with TLS_DTPREL. */
5744 sec
->has_tls_reloc
= 1;
5747 struct ppc_link_hash_entry
*eh
;
5748 eh
= (struct ppc_link_hash_entry
*) h
;
5749 eh
->tls_mask
|= tls_type
;
5752 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5753 rel
->r_addend
, tls_type
))
5756 ppc64_sec
= ppc64_elf_section_data (sec
);
5757 if (ppc64_sec
->sec_type
!= sec_toc
)
5761 /* One extra to simplify get_tls_mask. */
5762 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5763 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5764 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5766 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5767 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5768 if (ppc64_sec
->u
.toc
.add
== NULL
)
5770 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5771 ppc64_sec
->sec_type
= sec_toc
;
5773 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5774 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5775 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5777 /* Mark the second slot of a GD or LD entry.
5778 -1 to indicate GD and -2 to indicate LD. */
5779 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5780 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5781 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5782 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5785 case R_PPC64_TPREL16
:
5786 case R_PPC64_TPREL16_LO
:
5787 case R_PPC64_TPREL16_HI
:
5788 case R_PPC64_TPREL16_HA
:
5789 case R_PPC64_TPREL16_DS
:
5790 case R_PPC64_TPREL16_LO_DS
:
5791 case R_PPC64_TPREL16_HIGH
:
5792 case R_PPC64_TPREL16_HIGHA
:
5793 case R_PPC64_TPREL16_HIGHER
:
5794 case R_PPC64_TPREL16_HIGHERA
:
5795 case R_PPC64_TPREL16_HIGHEST
:
5796 case R_PPC64_TPREL16_HIGHESTA
:
5797 if (bfd_link_pic (info
))
5799 info
->flags
|= DF_STATIC_TLS
;
5804 case R_PPC64_ADDR64
:
5805 if (opd_sym_map
!= NULL
5806 && rel
+ 1 < rel_end
5807 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5811 if (h
->root
.root
.string
[0] == '.'
5812 && h
->root
.root
.string
[1] != 0
5813 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5816 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5821 Elf_Internal_Sym
*isym
;
5823 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5828 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5829 if (s
!= NULL
&& s
!= sec
)
5830 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5835 case R_PPC64_ADDR16
:
5836 case R_PPC64_ADDR16_DS
:
5837 case R_PPC64_ADDR16_HA
:
5838 case R_PPC64_ADDR16_HI
:
5839 case R_PPC64_ADDR16_HIGH
:
5840 case R_PPC64_ADDR16_HIGHA
:
5841 case R_PPC64_ADDR16_HIGHER
:
5842 case R_PPC64_ADDR16_HIGHERA
:
5843 case R_PPC64_ADDR16_HIGHEST
:
5844 case R_PPC64_ADDR16_HIGHESTA
:
5845 case R_PPC64_ADDR16_LO
:
5846 case R_PPC64_ADDR16_LO_DS
:
5847 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5848 && rel
->r_addend
== 0)
5850 /* We may need a .plt entry if this reloc refers to a
5851 function in a shared lib. */
5852 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5854 h
->pointer_equality_needed
= 1;
5861 case R_PPC64_ADDR32
:
5862 case R_PPC64_UADDR16
:
5863 case R_PPC64_UADDR32
:
5864 case R_PPC64_UADDR64
:
5866 if (h
!= NULL
&& !bfd_link_pic (info
))
5867 /* We may need a copy reloc. */
5870 /* Don't propagate .opd relocs. */
5871 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5874 /* If we are creating a shared library, and this is a reloc
5875 against a global symbol, or a non PC relative reloc
5876 against a local symbol, then we need to copy the reloc
5877 into the shared library. However, if we are linking with
5878 -Bsymbolic, we do not need to copy a reloc against a
5879 global symbol which is defined in an object we are
5880 including in the link (i.e., DEF_REGULAR is set). At
5881 this point we have not seen all the input files, so it is
5882 possible that DEF_REGULAR is not set now but will be set
5883 later (it is never cleared). In case of a weak definition,
5884 DEF_REGULAR may be cleared later by a strong definition in
5885 a shared library. We account for that possibility below by
5886 storing information in the dyn_relocs field of the hash
5887 table entry. A similar situation occurs when creating
5888 shared libraries and symbol visibility changes render the
5891 If on the other hand, we are creating an executable, we
5892 may need to keep relocations for symbols satisfied by a
5893 dynamic library if we manage to avoid copy relocs for the
5896 if ((bfd_link_pic (info
)
5897 && (must_be_dyn_reloc (info
, r_type
)
5899 && (!SYMBOLIC_BIND (info
, h
)
5900 || h
->root
.type
== bfd_link_hash_defweak
5901 || !h
->def_regular
))))
5902 || (ELIMINATE_COPY_RELOCS
5903 && !bfd_link_pic (info
)
5905 && (h
->root
.type
== bfd_link_hash_defweak
5906 || !h
->def_regular
))
5907 || (!bfd_link_pic (info
)
5910 /* We must copy these reloc types into the output file.
5911 Create a reloc section in dynobj and make room for
5915 sreloc
= _bfd_elf_make_dynamic_reloc_section
5916 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5922 /* If this is a global symbol, we count the number of
5923 relocations we need for this symbol. */
5926 struct elf_dyn_relocs
*p
;
5927 struct elf_dyn_relocs
**head
;
5929 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5931 if (p
== NULL
|| p
->sec
!= sec
)
5933 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5943 if (!must_be_dyn_reloc (info
, r_type
))
5948 /* Track dynamic relocs needed for local syms too.
5949 We really need local syms available to do this
5951 struct ppc_dyn_relocs
*p
;
5952 struct ppc_dyn_relocs
**head
;
5953 bfd_boolean is_ifunc
;
5956 Elf_Internal_Sym
*isym
;
5958 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5963 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5967 vpp
= &elf_section_data (s
)->local_dynrel
;
5968 head
= (struct ppc_dyn_relocs
**) vpp
;
5969 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5971 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5973 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5975 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5981 p
->ifunc
= is_ifunc
;
5997 /* Merge backend specific data from an object file to the output
5998 object file when linking. */
6001 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6003 unsigned long iflags
, oflags
;
6005 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6008 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6011 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
6014 iflags
= elf_elfheader (ibfd
)->e_flags
;
6015 oflags
= elf_elfheader (obfd
)->e_flags
;
6017 if (iflags
& ~EF_PPC64_ABI
)
6019 (*_bfd_error_handler
)
6020 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6021 bfd_set_error (bfd_error_bad_value
);
6024 else if (iflags
!= oflags
&& iflags
!= 0)
6026 (*_bfd_error_handler
)
6027 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6028 ibfd
, iflags
, oflags
);
6029 bfd_set_error (bfd_error_bad_value
);
6033 /* Merge Tag_compatibility attributes and any common GNU ones. */
6034 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
6040 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6042 /* Print normal ELF private data. */
6043 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6045 if (elf_elfheader (abfd
)->e_flags
!= 0)
6049 /* xgettext:c-format */
6050 fprintf (file
, _("private flags = 0x%lx:"),
6051 elf_elfheader (abfd
)->e_flags
);
6053 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6054 fprintf (file
, _(" [abiv%ld]"),
6055 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6062 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6063 of the code entry point, and its section, which must be in the same
6064 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6067 opd_entry_value (asection
*opd_sec
,
6069 asection
**code_sec
,
6071 bfd_boolean in_code_sec
)
6073 bfd
*opd_bfd
= opd_sec
->owner
;
6074 Elf_Internal_Rela
*relocs
;
6075 Elf_Internal_Rela
*lo
, *hi
, *look
;
6078 /* No relocs implies we are linking a --just-symbols object, or looking
6079 at a final linked executable with addr2line or somesuch. */
6080 if (opd_sec
->reloc_count
== 0)
6082 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6084 if (contents
== NULL
)
6086 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6087 return (bfd_vma
) -1;
6088 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6091 /* PR 17512: file: 64b9dfbb. */
6092 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6093 return (bfd_vma
) -1;
6095 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6096 if (code_sec
!= NULL
)
6098 asection
*sec
, *likely
= NULL
;
6104 && val
< sec
->vma
+ sec
->size
)
6110 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6112 && (sec
->flags
& SEC_LOAD
) != 0
6113 && (sec
->flags
& SEC_ALLOC
) != 0)
6118 if (code_off
!= NULL
)
6119 *code_off
= val
- likely
->vma
;
6125 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6127 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6129 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6130 /* PR 17512: file: df8e1fd6. */
6132 return (bfd_vma
) -1;
6134 /* Go find the opd reloc at the sym address. */
6136 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6140 look
= lo
+ (hi
- lo
) / 2;
6141 if (look
->r_offset
< offset
)
6143 else if (look
->r_offset
> offset
)
6147 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6149 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6150 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6152 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6153 asection
*sec
= NULL
;
6155 if (symndx
>= symtab_hdr
->sh_info
6156 && elf_sym_hashes (opd_bfd
) != NULL
)
6158 struct elf_link_hash_entry
**sym_hashes
;
6159 struct elf_link_hash_entry
*rh
;
6161 sym_hashes
= elf_sym_hashes (opd_bfd
);
6162 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6165 rh
= elf_follow_link (rh
);
6166 if (rh
->root
.type
!= bfd_link_hash_defined
6167 && rh
->root
.type
!= bfd_link_hash_defweak
)
6169 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6171 val
= rh
->root
.u
.def
.value
;
6172 sec
= rh
->root
.u
.def
.section
;
6179 Elf_Internal_Sym
*sym
;
6181 if (symndx
< symtab_hdr
->sh_info
)
6183 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6186 size_t symcnt
= symtab_hdr
->sh_info
;
6187 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6192 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6198 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6204 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6207 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6208 val
= sym
->st_value
;
6211 val
+= look
->r_addend
;
6212 if (code_off
!= NULL
)
6214 if (code_sec
!= NULL
)
6216 if (in_code_sec
&& *code_sec
!= sec
)
6221 if (sec
->output_section
!= NULL
)
6222 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6231 /* If the ELF symbol SYM might be a function in SEC, return the
6232 function size and set *CODE_OFF to the function's entry point,
6233 otherwise return zero. */
6235 static bfd_size_type
6236 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6241 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6242 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6246 if (!(sym
->flags
& BSF_SYNTHETIC
))
6247 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6249 if (strcmp (sym
->section
->name
, ".opd") == 0)
6251 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6252 bfd_vma symval
= sym
->value
;
6255 && opd
->adjust
!= NULL
6256 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6258 /* opd_entry_value will use cached relocs that have been
6259 adjusted, but with raw symbols. That means both local
6260 and global symbols need adjusting. */
6261 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6267 if (opd_entry_value (sym
->section
, symval
,
6268 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6270 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6271 symbol. This size has nothing to do with the code size of the
6272 function, which is what we're supposed to return, but the
6273 code size isn't available without looking up the dot-sym.
6274 However, doing that would be a waste of time particularly
6275 since elf_find_function will look at the dot-sym anyway.
6276 Now, elf_find_function will keep the largest size of any
6277 function sym found at the code address of interest, so return
6278 1 here to avoid it incorrectly caching a larger function size
6279 for a small function. This does mean we return the wrong
6280 size for a new-ABI function of size 24, but all that does is
6281 disable caching for such functions. */
6287 if (sym
->section
!= sec
)
6289 *code_off
= sym
->value
;
6296 /* Return true if symbol is defined in a regular object file. */
6299 is_static_defined (struct elf_link_hash_entry
*h
)
6301 return ((h
->root
.type
== bfd_link_hash_defined
6302 || h
->root
.type
== bfd_link_hash_defweak
)
6303 && h
->root
.u
.def
.section
!= NULL
6304 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6307 /* If FDH is a function descriptor symbol, return the associated code
6308 entry symbol if it is defined. Return NULL otherwise. */
6310 static struct ppc_link_hash_entry
*
6311 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6313 if (fdh
->is_func_descriptor
)
6315 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6316 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6317 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6323 /* If FH is a function code entry symbol, return the associated
6324 function descriptor symbol if it is defined. Return NULL otherwise. */
6326 static struct ppc_link_hash_entry
*
6327 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6330 && fh
->oh
->is_func_descriptor
)
6332 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6333 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6334 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6340 /* Mark all our entry sym sections, both opd and code section. */
6343 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6345 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6346 struct bfd_sym_chain
*sym
;
6351 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6353 struct ppc_link_hash_entry
*eh
, *fh
;
6356 eh
= (struct ppc_link_hash_entry
*)
6357 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6360 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6361 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6364 fh
= defined_code_entry (eh
);
6367 sec
= fh
->elf
.root
.u
.def
.section
;
6368 sec
->flags
|= SEC_KEEP
;
6370 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6371 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6372 eh
->elf
.root
.u
.def
.value
,
6373 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6374 sec
->flags
|= SEC_KEEP
;
6376 sec
= eh
->elf
.root
.u
.def
.section
;
6377 sec
->flags
|= SEC_KEEP
;
6381 /* Mark sections containing dynamically referenced symbols. When
6382 building shared libraries, we must assume that any visible symbol is
6386 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6388 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6389 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6390 struct ppc_link_hash_entry
*fdh
;
6391 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6393 /* Dynamic linking info is on the func descriptor sym. */
6394 fdh
= defined_func_desc (eh
);
6398 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6399 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6400 && (eh
->elf
.ref_dynamic
6401 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6402 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6403 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6404 && (!bfd_link_executable (info
)
6405 || info
->export_dynamic
6408 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6409 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6410 || !bfd_hide_sym_by_version (info
->version_info
,
6411 eh
->elf
.root
.root
.string
)))))
6414 struct ppc_link_hash_entry
*fh
;
6416 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6418 /* Function descriptor syms cause the associated
6419 function code sym section to be marked. */
6420 fh
= defined_code_entry (eh
);
6423 code_sec
= fh
->elf
.root
.u
.def
.section
;
6424 code_sec
->flags
|= SEC_KEEP
;
6426 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6427 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6428 eh
->elf
.root
.u
.def
.value
,
6429 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6430 code_sec
->flags
|= SEC_KEEP
;
6436 /* Return the section that should be marked against GC for a given
6440 ppc64_elf_gc_mark_hook (asection
*sec
,
6441 struct bfd_link_info
*info
,
6442 Elf_Internal_Rela
*rel
,
6443 struct elf_link_hash_entry
*h
,
6444 Elf_Internal_Sym
*sym
)
6448 /* Syms return NULL if we're marking .opd, so we avoid marking all
6449 function sections, as all functions are referenced in .opd. */
6451 if (get_opd_info (sec
) != NULL
)
6456 enum elf_ppc64_reloc_type r_type
;
6457 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6459 r_type
= ELF64_R_TYPE (rel
->r_info
);
6462 case R_PPC64_GNU_VTINHERIT
:
6463 case R_PPC64_GNU_VTENTRY
:
6467 switch (h
->root
.type
)
6469 case bfd_link_hash_defined
:
6470 case bfd_link_hash_defweak
:
6471 eh
= (struct ppc_link_hash_entry
*) h
;
6472 fdh
= defined_func_desc (eh
);
6476 /* Function descriptor syms cause the associated
6477 function code sym section to be marked. */
6478 fh
= defined_code_entry (eh
);
6481 /* They also mark their opd section. */
6482 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6484 rsec
= fh
->elf
.root
.u
.def
.section
;
6486 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6487 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6488 eh
->elf
.root
.u
.def
.value
,
6489 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6490 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6492 rsec
= h
->root
.u
.def
.section
;
6495 case bfd_link_hash_common
:
6496 rsec
= h
->root
.u
.c
.p
->section
;
6500 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6506 struct _opd_sec_data
*opd
;
6508 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6509 opd
= get_opd_info (rsec
);
6510 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6514 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6521 /* Update the .got, .plt. and dynamic reloc reference counts for the
6522 section being removed. */
6525 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6526 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6528 struct ppc_link_hash_table
*htab
;
6529 Elf_Internal_Shdr
*symtab_hdr
;
6530 struct elf_link_hash_entry
**sym_hashes
;
6531 struct got_entry
**local_got_ents
;
6532 const Elf_Internal_Rela
*rel
, *relend
;
6534 if (bfd_link_relocatable (info
))
6537 if ((sec
->flags
& SEC_ALLOC
) == 0)
6540 elf_section_data (sec
)->local_dynrel
= NULL
;
6542 htab
= ppc_hash_table (info
);
6546 symtab_hdr
= &elf_symtab_hdr (abfd
);
6547 sym_hashes
= elf_sym_hashes (abfd
);
6548 local_got_ents
= elf_local_got_ents (abfd
);
6550 relend
= relocs
+ sec
->reloc_count
;
6551 for (rel
= relocs
; rel
< relend
; rel
++)
6553 unsigned long r_symndx
;
6554 enum elf_ppc64_reloc_type r_type
;
6555 struct elf_link_hash_entry
*h
= NULL
;
6556 struct plt_entry
**plt_list
;
6557 unsigned char tls_type
= 0;
6559 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6560 r_type
= ELF64_R_TYPE (rel
->r_info
);
6561 if (r_symndx
>= symtab_hdr
->sh_info
)
6563 struct ppc_link_hash_entry
*eh
;
6564 struct elf_dyn_relocs
**pp
;
6565 struct elf_dyn_relocs
*p
;
6567 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6568 h
= elf_follow_link (h
);
6569 eh
= (struct ppc_link_hash_entry
*) h
;
6571 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6574 /* Everything must go for SEC. */
6582 case R_PPC64_GOT_TLSLD16
:
6583 case R_PPC64_GOT_TLSLD16_LO
:
6584 case R_PPC64_GOT_TLSLD16_HI
:
6585 case R_PPC64_GOT_TLSLD16_HA
:
6586 tls_type
= TLS_TLS
| TLS_LD
;
6589 case R_PPC64_GOT_TLSGD16
:
6590 case R_PPC64_GOT_TLSGD16_LO
:
6591 case R_PPC64_GOT_TLSGD16_HI
:
6592 case R_PPC64_GOT_TLSGD16_HA
:
6593 tls_type
= TLS_TLS
| TLS_GD
;
6596 case R_PPC64_GOT_TPREL16_DS
:
6597 case R_PPC64_GOT_TPREL16_LO_DS
:
6598 case R_PPC64_GOT_TPREL16_HI
:
6599 case R_PPC64_GOT_TPREL16_HA
:
6600 tls_type
= TLS_TLS
| TLS_TPREL
;
6603 case R_PPC64_GOT_DTPREL16_DS
:
6604 case R_PPC64_GOT_DTPREL16_LO_DS
:
6605 case R_PPC64_GOT_DTPREL16_HI
:
6606 case R_PPC64_GOT_DTPREL16_HA
:
6607 tls_type
= TLS_TLS
| TLS_DTPREL
;
6611 case R_PPC64_GOT16_DS
:
6612 case R_PPC64_GOT16_HA
:
6613 case R_PPC64_GOT16_HI
:
6614 case R_PPC64_GOT16_LO
:
6615 case R_PPC64_GOT16_LO_DS
:
6618 struct got_entry
*ent
;
6623 ent
= local_got_ents
[r_symndx
];
6625 for (; ent
!= NULL
; ent
= ent
->next
)
6626 if (ent
->addend
== rel
->r_addend
6627 && ent
->owner
== abfd
6628 && ent
->tls_type
== tls_type
)
6632 if (ent
->got
.refcount
> 0)
6633 ent
->got
.refcount
-= 1;
6637 case R_PPC64_PLT16_HA
:
6638 case R_PPC64_PLT16_HI
:
6639 case R_PPC64_PLT16_LO
:
6643 case R_PPC64_REL14_BRNTAKEN
:
6644 case R_PPC64_REL14_BRTAKEN
:
6648 plt_list
= &h
->plt
.plist
;
6649 else if (local_got_ents
!= NULL
)
6651 struct plt_entry
**local_plt
= (struct plt_entry
**)
6652 (local_got_ents
+ symtab_hdr
->sh_info
);
6653 unsigned char *local_got_tls_masks
= (unsigned char *)
6654 (local_plt
+ symtab_hdr
->sh_info
);
6655 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6656 plt_list
= local_plt
+ r_symndx
;
6660 struct plt_entry
*ent
;
6662 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6663 if (ent
->addend
== rel
->r_addend
)
6665 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6666 ent
->plt
.refcount
-= 1;
6677 /* The maximum size of .sfpr. */
6678 #define SFPR_MAX (218*4)
6680 struct sfpr_def_parms
6682 const char name
[12];
6683 unsigned char lo
, hi
;
6684 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6685 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6688 /* Auto-generate _save*, _rest* functions in .sfpr.
6689 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6693 sfpr_define (struct bfd_link_info
*info
,
6694 const struct sfpr_def_parms
*parm
,
6697 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6699 size_t len
= strlen (parm
->name
);
6700 bfd_boolean writing
= FALSE
;
6706 memcpy (sym
, parm
->name
, len
);
6709 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6711 struct ppc_link_hash_entry
*h
;
6713 sym
[len
+ 0] = i
/ 10 + '0';
6714 sym
[len
+ 1] = i
% 10 + '0';
6715 h
= (struct ppc_link_hash_entry
*)
6716 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6717 if (stub_sec
!= NULL
)
6720 && h
->elf
.root
.type
== bfd_link_hash_defined
6721 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6723 struct elf_link_hash_entry
*s
;
6725 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6726 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6729 if (s
->root
.type
== bfd_link_hash_new
6730 || (s
->root
.type
= bfd_link_hash_defined
6731 && s
->root
.u
.def
.section
== stub_sec
))
6733 s
->root
.type
= bfd_link_hash_defined
;
6734 s
->root
.u
.def
.section
= stub_sec
;
6735 s
->root
.u
.def
.value
= (stub_sec
->size
6736 + h
->elf
.root
.u
.def
.value
);
6739 s
->ref_regular_nonweak
= 1;
6740 s
->forced_local
= 1;
6742 s
->root
.linker_def
= 1;
6750 if (!h
->elf
.def_regular
)
6752 h
->elf
.root
.type
= bfd_link_hash_defined
;
6753 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6754 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6755 h
->elf
.type
= STT_FUNC
;
6756 h
->elf
.def_regular
= 1;
6758 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6760 if (htab
->sfpr
->contents
== NULL
)
6762 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6763 if (htab
->sfpr
->contents
== NULL
)
6770 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6772 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6774 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6775 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6783 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6785 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6790 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6792 p
= savegpr0 (abfd
, p
, r
);
6793 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6795 bfd_put_32 (abfd
, BLR
, p
);
6800 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6802 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6807 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6809 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6811 p
= restgpr0 (abfd
, p
, r
);
6812 bfd_put_32 (abfd
, MTLR_R0
, p
);
6816 p
= restgpr0 (abfd
, p
, 30);
6817 p
= restgpr0 (abfd
, p
, 31);
6819 bfd_put_32 (abfd
, BLR
, p
);
6824 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6826 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6831 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6833 p
= savegpr1 (abfd
, p
, r
);
6834 bfd_put_32 (abfd
, BLR
, p
);
6839 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6841 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6846 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6848 p
= restgpr1 (abfd
, p
, r
);
6849 bfd_put_32 (abfd
, BLR
, p
);
6854 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6856 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6861 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6863 p
= savefpr (abfd
, p
, r
);
6864 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6866 bfd_put_32 (abfd
, BLR
, p
);
6871 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6873 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6878 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6880 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6882 p
= restfpr (abfd
, p
, r
);
6883 bfd_put_32 (abfd
, MTLR_R0
, p
);
6887 p
= restfpr (abfd
, p
, 30);
6888 p
= restfpr (abfd
, p
, 31);
6890 bfd_put_32 (abfd
, BLR
, p
);
6895 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6897 p
= savefpr (abfd
, p
, r
);
6898 bfd_put_32 (abfd
, BLR
, p
);
6903 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6905 p
= restfpr (abfd
, p
, r
);
6906 bfd_put_32 (abfd
, BLR
, p
);
6911 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6913 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6915 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6920 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6922 p
= savevr (abfd
, p
, r
);
6923 bfd_put_32 (abfd
, BLR
, p
);
6928 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6930 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6932 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6937 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6939 p
= restvr (abfd
, p
, r
);
6940 bfd_put_32 (abfd
, BLR
, p
);
6944 /* Called via elf_link_hash_traverse to transfer dynamic linking
6945 information on function code symbol entries to their corresponding
6946 function descriptor symbol entries. */
6949 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6951 struct bfd_link_info
*info
;
6952 struct ppc_link_hash_table
*htab
;
6953 struct plt_entry
*ent
;
6954 struct ppc_link_hash_entry
*fh
;
6955 struct ppc_link_hash_entry
*fdh
;
6956 bfd_boolean force_local
;
6958 fh
= (struct ppc_link_hash_entry
*) h
;
6959 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6963 htab
= ppc_hash_table (info
);
6967 /* Resolve undefined references to dot-symbols as the value
6968 in the function descriptor, if we have one in a regular object.
6969 This is to satisfy cases like ".quad .foo". Calls to functions
6970 in dynamic objects are handled elsewhere. */
6971 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6972 && fh
->was_undefined
6973 && (fdh
= defined_func_desc (fh
)) != NULL
6974 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6975 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6976 fdh
->elf
.root
.u
.def
.value
,
6977 &fh
->elf
.root
.u
.def
.section
,
6978 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6980 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6981 fh
->elf
.forced_local
= 1;
6982 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6983 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6986 /* If this is a function code symbol, transfer dynamic linking
6987 information to the function descriptor symbol. */
6991 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6992 if (ent
->plt
.refcount
> 0)
6995 || fh
->elf
.root
.root
.string
[0] != '.'
6996 || fh
->elf
.root
.root
.string
[1] == '\0')
6999 /* Find the corresponding function descriptor symbol. Create it
7000 as undefined if necessary. */
7002 fdh
= lookup_fdh (fh
, htab
);
7004 && !bfd_link_executable (info
)
7005 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7006 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7008 fdh
= make_fdh (info
, fh
);
7013 /* Fake function descriptors are made undefweak. If the function
7014 code symbol is strong undefined, make the fake sym the same.
7015 If the function code symbol is defined, then force the fake
7016 descriptor local; We can't support overriding of symbols in a
7017 shared library on a fake descriptor. */
7021 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7023 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
7025 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
7026 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
7028 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
7029 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
7031 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7036 && !fdh
->elf
.forced_local
7037 && (!bfd_link_executable (info
)
7038 || fdh
->elf
.def_dynamic
7039 || fdh
->elf
.ref_dynamic
7040 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
7041 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
7043 if (fdh
->elf
.dynindx
== -1)
7044 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7046 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7047 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7048 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7049 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7050 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
7052 move_plt_plist (fh
, fdh
);
7053 fdh
->elf
.needs_plt
= 1;
7055 fdh
->is_func_descriptor
= 1;
7060 /* Now that the info is on the function descriptor, clear the
7061 function code sym info. Any function code syms for which we
7062 don't have a definition in a regular file, we force local.
7063 This prevents a shared library from exporting syms that have
7064 been imported from another library. Function code syms that
7065 are really in the library we must leave global to prevent the
7066 linker dragging in a definition from a static library. */
7067 force_local
= (!fh
->elf
.def_regular
7069 || !fdh
->elf
.def_regular
7070 || fdh
->elf
.forced_local
);
7071 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7076 static const struct sfpr_def_parms save_res_funcs
[] =
7078 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7079 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7080 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7081 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7082 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7083 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7084 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7085 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7086 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7087 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7088 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7089 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7092 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7093 this hook to a) provide some gcc support functions, and b) transfer
7094 dynamic linking information gathered so far on function code symbol
7095 entries, to their corresponding function descriptor symbol entries. */
7098 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7099 struct bfd_link_info
*info
)
7101 struct ppc_link_hash_table
*htab
;
7103 htab
= ppc_hash_table (info
);
7107 /* Provide any missing _save* and _rest* functions. */
7108 if (htab
->sfpr
!= NULL
)
7112 htab
->sfpr
->size
= 0;
7113 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7114 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7116 if (htab
->sfpr
->size
== 0)
7117 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7120 if (bfd_link_relocatable (info
))
7123 if (htab
->elf
.hgot
!= NULL
)
7125 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7126 /* Make .TOC. defined so as to prevent it being made dynamic.
7127 The wrong value here is fixed later in ppc64_elf_set_toc. */
7128 if (!htab
->elf
.hgot
->def_regular
7129 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7131 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7132 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7133 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7134 htab
->elf
.hgot
->def_regular
= 1;
7135 htab
->elf
.hgot
->root
.linker_def
= 1;
7137 htab
->elf
.hgot
->type
= STT_OBJECT
;
7138 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7142 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7147 /* Return true if we have dynamic relocs against H that apply to
7148 read-only sections. */
7151 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7153 struct ppc_link_hash_entry
*eh
;
7154 struct elf_dyn_relocs
*p
;
7156 eh
= (struct ppc_link_hash_entry
*) h
;
7157 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7159 asection
*s
= p
->sec
->output_section
;
7161 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7167 /* Return true if we have dynamic relocs against H or any of its weak
7168 aliases, that apply to read-only sections. */
7171 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7173 struct ppc_link_hash_entry
*eh
;
7175 eh
= (struct ppc_link_hash_entry
*) h
;
7178 if (readonly_dynrelocs (&eh
->elf
))
7181 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7186 /* Return whether EH has pc-relative dynamic relocs. */
7189 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7191 struct elf_dyn_relocs
*p
;
7193 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7194 if (p
->pc_count
!= 0)
7199 /* Return true if a global entry stub will be created for H. Valid
7200 for ELFv2 before plt entries have been allocated. */
7203 global_entry_stub (struct elf_link_hash_entry
*h
)
7205 struct plt_entry
*pent
;
7207 if (!h
->pointer_equality_needed
7211 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7212 if (pent
->plt
.refcount
> 0
7213 && pent
->addend
== 0)
7219 /* Adjust a symbol defined by a dynamic object and referenced by a
7220 regular object. The current definition is in some section of the
7221 dynamic object, but we're not including those sections. We have to
7222 change the definition to something the rest of the link can
7226 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7227 struct elf_link_hash_entry
*h
)
7229 struct ppc_link_hash_table
*htab
;
7232 htab
= ppc_hash_table (info
);
7236 /* Deal with function syms. */
7237 if (h
->type
== STT_FUNC
7238 || h
->type
== STT_GNU_IFUNC
7241 /* Clear procedure linkage table information for any symbol that
7242 won't need a .plt entry. */
7243 struct plt_entry
*ent
;
7244 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7245 if (ent
->plt
.refcount
> 0)
7248 || (h
->type
!= STT_GNU_IFUNC
7249 && (SYMBOL_CALLS_LOCAL (info
, h
)
7250 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7251 && h
->root
.type
== bfd_link_hash_undefweak
)))
7252 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7254 h
->plt
.plist
= NULL
;
7256 h
->pointer_equality_needed
= 0;
7258 else if (abiversion (info
->output_bfd
) >= 2)
7260 /* Taking a function's address in a read/write section
7261 doesn't require us to define the function symbol in the
7262 executable on a global entry stub. A dynamic reloc can
7263 be used instead. The reason we prefer a few more dynamic
7264 relocs is that calling via a global entry stub costs a
7265 few more instructions, and pointer_equality_needed causes
7266 extra work in ld.so when resolving these symbols. */
7267 if (global_entry_stub (h
)
7268 && !alias_readonly_dynrelocs (h
))
7270 h
->pointer_equality_needed
= 0;
7271 /* After adjust_dynamic_symbol, non_got_ref set in
7272 the non-pic case means that dyn_relocs for this
7273 symbol should be discarded. */
7277 /* If making a plt entry, then we don't need copy relocs. */
7282 h
->plt
.plist
= NULL
;
7284 /* If this is a weak symbol, and there is a real definition, the
7285 processor independent code will have arranged for us to see the
7286 real definition first, and we can just use the same value. */
7287 if (h
->u
.weakdef
!= NULL
)
7289 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7290 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7291 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7292 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7293 if (ELIMINATE_COPY_RELOCS
)
7294 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7298 /* If we are creating a shared library, we must presume that the
7299 only references to the symbol are via the global offset table.
7300 For such cases we need not do anything here; the relocations will
7301 be handled correctly by relocate_section. */
7302 if (bfd_link_pic (info
))
7305 /* If there are no references to this symbol that do not use the
7306 GOT, we don't need to generate a copy reloc. */
7307 if (!h
->non_got_ref
)
7310 /* Don't generate a copy reloc for symbols defined in the executable. */
7311 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7313 /* If -z nocopyreloc was given, don't generate them either. */
7314 || info
->nocopyreloc
7316 /* If we didn't find any dynamic relocs in read-only sections, then
7317 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7318 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7320 /* Protected variables do not work with .dynbss. The copy in
7321 .dynbss won't be used by the shared library with the protected
7322 definition for the variable. Text relocations are preferable
7323 to an incorrect program. */
7324 || h
->protected_def
)
7330 if (h
->plt
.plist
!= NULL
)
7332 /* We should never get here, but unfortunately there are versions
7333 of gcc out there that improperly (for this ABI) put initialized
7334 function pointers, vtable refs and suchlike in read-only
7335 sections. Allow them to proceed, but warn that this might
7336 break at runtime. */
7337 info
->callbacks
->einfo
7338 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7339 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7340 h
->root
.root
.string
);
7343 /* This is a reference to a symbol defined by a dynamic object which
7344 is not a function. */
7346 /* We must allocate the symbol in our .dynbss section, which will
7347 become part of the .bss section of the executable. There will be
7348 an entry for this symbol in the .dynsym section. The dynamic
7349 object will contain position independent code, so all references
7350 from the dynamic object to this symbol will go through the global
7351 offset table. The dynamic linker will use the .dynsym entry to
7352 determine the address it must put in the global offset table, so
7353 both the dynamic object and the regular object will refer to the
7354 same memory location for the variable. */
7356 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7357 to copy the initial value out of the dynamic object and into the
7358 runtime process image. We need to remember the offset into the
7359 .rela.bss section we are going to use. */
7360 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7362 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7368 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7371 /* If given a function descriptor symbol, hide both the function code
7372 sym and the descriptor. */
7374 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7375 struct elf_link_hash_entry
*h
,
7376 bfd_boolean force_local
)
7378 struct ppc_link_hash_entry
*eh
;
7379 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7381 eh
= (struct ppc_link_hash_entry
*) h
;
7382 if (eh
->is_func_descriptor
)
7384 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7389 struct ppc_link_hash_table
*htab
;
7392 /* We aren't supposed to use alloca in BFD because on
7393 systems which do not have alloca the version in libiberty
7394 calls xmalloc, which might cause the program to crash
7395 when it runs out of memory. This function doesn't have a
7396 return status, so there's no way to gracefully return an
7397 error. So cheat. We know that string[-1] can be safely
7398 accessed; It's either a string in an ELF string table,
7399 or allocated in an objalloc structure. */
7401 p
= eh
->elf
.root
.root
.string
- 1;
7404 htab
= ppc_hash_table (info
);
7408 fh
= (struct ppc_link_hash_entry
*)
7409 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7412 /* Unfortunately, if it so happens that the string we were
7413 looking for was allocated immediately before this string,
7414 then we overwrote the string terminator. That's the only
7415 reason the lookup should fail. */
7418 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7419 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7421 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7422 fh
= (struct ppc_link_hash_entry
*)
7423 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7432 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7437 get_sym_h (struct elf_link_hash_entry
**hp
,
7438 Elf_Internal_Sym
**symp
,
7440 unsigned char **tls_maskp
,
7441 Elf_Internal_Sym
**locsymsp
,
7442 unsigned long r_symndx
,
7445 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7447 if (r_symndx
>= symtab_hdr
->sh_info
)
7449 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7450 struct elf_link_hash_entry
*h
;
7452 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7453 h
= elf_follow_link (h
);
7461 if (symsecp
!= NULL
)
7463 asection
*symsec
= NULL
;
7464 if (h
->root
.type
== bfd_link_hash_defined
7465 || h
->root
.type
== bfd_link_hash_defweak
)
7466 symsec
= h
->root
.u
.def
.section
;
7470 if (tls_maskp
!= NULL
)
7472 struct ppc_link_hash_entry
*eh
;
7474 eh
= (struct ppc_link_hash_entry
*) h
;
7475 *tls_maskp
= &eh
->tls_mask
;
7480 Elf_Internal_Sym
*sym
;
7481 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7483 if (locsyms
== NULL
)
7485 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7486 if (locsyms
== NULL
)
7487 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7488 symtab_hdr
->sh_info
,
7489 0, NULL
, NULL
, NULL
);
7490 if (locsyms
== NULL
)
7492 *locsymsp
= locsyms
;
7494 sym
= locsyms
+ r_symndx
;
7502 if (symsecp
!= NULL
)
7503 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7505 if (tls_maskp
!= NULL
)
7507 struct got_entry
**lgot_ents
;
7508 unsigned char *tls_mask
;
7511 lgot_ents
= elf_local_got_ents (ibfd
);
7512 if (lgot_ents
!= NULL
)
7514 struct plt_entry
**local_plt
= (struct plt_entry
**)
7515 (lgot_ents
+ symtab_hdr
->sh_info
);
7516 unsigned char *lgot_masks
= (unsigned char *)
7517 (local_plt
+ symtab_hdr
->sh_info
);
7518 tls_mask
= &lgot_masks
[r_symndx
];
7520 *tls_maskp
= tls_mask
;
7526 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7527 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7528 type suitable for optimization, and 1 otherwise. */
7531 get_tls_mask (unsigned char **tls_maskp
,
7532 unsigned long *toc_symndx
,
7533 bfd_vma
*toc_addend
,
7534 Elf_Internal_Sym
**locsymsp
,
7535 const Elf_Internal_Rela
*rel
,
7538 unsigned long r_symndx
;
7540 struct elf_link_hash_entry
*h
;
7541 Elf_Internal_Sym
*sym
;
7545 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7546 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7549 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7551 || ppc64_elf_section_data (sec
) == NULL
7552 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7555 /* Look inside a TOC section too. */
7558 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7559 off
= h
->root
.u
.def
.value
;
7562 off
= sym
->st_value
;
7563 off
+= rel
->r_addend
;
7564 BFD_ASSERT (off
% 8 == 0);
7565 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7566 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7567 if (toc_symndx
!= NULL
)
7568 *toc_symndx
= r_symndx
;
7569 if (toc_addend
!= NULL
)
7570 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7571 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7573 if ((h
== NULL
|| is_static_defined (h
))
7574 && (next_r
== -1 || next_r
== -2))
7579 /* Find (or create) an entry in the tocsave hash table. */
7581 static struct tocsave_entry
*
7582 tocsave_find (struct ppc_link_hash_table
*htab
,
7583 enum insert_option insert
,
7584 Elf_Internal_Sym
**local_syms
,
7585 const Elf_Internal_Rela
*irela
,
7588 unsigned long r_indx
;
7589 struct elf_link_hash_entry
*h
;
7590 Elf_Internal_Sym
*sym
;
7591 struct tocsave_entry ent
, *p
;
7593 struct tocsave_entry
**slot
;
7595 r_indx
= ELF64_R_SYM (irela
->r_info
);
7596 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7598 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7600 (*_bfd_error_handler
)
7601 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7606 ent
.offset
= h
->root
.u
.def
.value
;
7608 ent
.offset
= sym
->st_value
;
7609 ent
.offset
+= irela
->r_addend
;
7611 hash
= tocsave_htab_hash (&ent
);
7612 slot
= ((struct tocsave_entry
**)
7613 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7619 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7628 /* Adjust all global syms defined in opd sections. In gcc generated
7629 code for the old ABI, these will already have been done. */
7632 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7634 struct ppc_link_hash_entry
*eh
;
7636 struct _opd_sec_data
*opd
;
7638 if (h
->root
.type
== bfd_link_hash_indirect
)
7641 if (h
->root
.type
!= bfd_link_hash_defined
7642 && h
->root
.type
!= bfd_link_hash_defweak
)
7645 eh
= (struct ppc_link_hash_entry
*) h
;
7646 if (eh
->adjust_done
)
7649 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7650 opd
= get_opd_info (sym_sec
);
7651 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7653 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7656 /* This entry has been deleted. */
7657 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7660 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7661 if (discarded_section (dsec
))
7663 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7667 eh
->elf
.root
.u
.def
.value
= 0;
7668 eh
->elf
.root
.u
.def
.section
= dsec
;
7671 eh
->elf
.root
.u
.def
.value
+= adjust
;
7672 eh
->adjust_done
= 1;
7677 /* Handles decrementing dynamic reloc counts for the reloc specified by
7678 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7679 have already been determined. */
7682 dec_dynrel_count (bfd_vma r_info
,
7684 struct bfd_link_info
*info
,
7685 Elf_Internal_Sym
**local_syms
,
7686 struct elf_link_hash_entry
*h
,
7687 Elf_Internal_Sym
*sym
)
7689 enum elf_ppc64_reloc_type r_type
;
7690 asection
*sym_sec
= NULL
;
7692 /* Can this reloc be dynamic? This switch, and later tests here
7693 should be kept in sync with the code in check_relocs. */
7694 r_type
= ELF64_R_TYPE (r_info
);
7700 case R_PPC64_TPREL16
:
7701 case R_PPC64_TPREL16_LO
:
7702 case R_PPC64_TPREL16_HI
:
7703 case R_PPC64_TPREL16_HA
:
7704 case R_PPC64_TPREL16_DS
:
7705 case R_PPC64_TPREL16_LO_DS
:
7706 case R_PPC64_TPREL16_HIGH
:
7707 case R_PPC64_TPREL16_HIGHA
:
7708 case R_PPC64_TPREL16_HIGHER
:
7709 case R_PPC64_TPREL16_HIGHERA
:
7710 case R_PPC64_TPREL16_HIGHEST
:
7711 case R_PPC64_TPREL16_HIGHESTA
:
7712 if (!bfd_link_pic (info
))
7715 case R_PPC64_TPREL64
:
7716 case R_PPC64_DTPMOD64
:
7717 case R_PPC64_DTPREL64
:
7718 case R_PPC64_ADDR64
:
7722 case R_PPC64_ADDR14
:
7723 case R_PPC64_ADDR14_BRNTAKEN
:
7724 case R_PPC64_ADDR14_BRTAKEN
:
7725 case R_PPC64_ADDR16
:
7726 case R_PPC64_ADDR16_DS
:
7727 case R_PPC64_ADDR16_HA
:
7728 case R_PPC64_ADDR16_HI
:
7729 case R_PPC64_ADDR16_HIGH
:
7730 case R_PPC64_ADDR16_HIGHA
:
7731 case R_PPC64_ADDR16_HIGHER
:
7732 case R_PPC64_ADDR16_HIGHERA
:
7733 case R_PPC64_ADDR16_HIGHEST
:
7734 case R_PPC64_ADDR16_HIGHESTA
:
7735 case R_PPC64_ADDR16_LO
:
7736 case R_PPC64_ADDR16_LO_DS
:
7737 case R_PPC64_ADDR24
:
7738 case R_PPC64_ADDR32
:
7739 case R_PPC64_UADDR16
:
7740 case R_PPC64_UADDR32
:
7741 case R_PPC64_UADDR64
:
7746 if (local_syms
!= NULL
)
7748 unsigned long r_symndx
;
7749 bfd
*ibfd
= sec
->owner
;
7751 r_symndx
= ELF64_R_SYM (r_info
);
7752 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7756 if ((bfd_link_pic (info
)
7757 && (must_be_dyn_reloc (info
, r_type
)
7759 && (!SYMBOLIC_BIND (info
, h
)
7760 || h
->root
.type
== bfd_link_hash_defweak
7761 || !h
->def_regular
))))
7762 || (ELIMINATE_COPY_RELOCS
7763 && !bfd_link_pic (info
)
7765 && (h
->root
.type
== bfd_link_hash_defweak
7766 || !h
->def_regular
)))
7773 struct elf_dyn_relocs
*p
;
7774 struct elf_dyn_relocs
**pp
;
7775 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7777 /* elf_gc_sweep may have already removed all dyn relocs associated
7778 with local syms for a given section. Also, symbol flags are
7779 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7780 report a dynreloc miscount. */
7781 if (*pp
== NULL
&& info
->gc_sections
)
7784 while ((p
= *pp
) != NULL
)
7788 if (!must_be_dyn_reloc (info
, r_type
))
7800 struct ppc_dyn_relocs
*p
;
7801 struct ppc_dyn_relocs
**pp
;
7803 bfd_boolean is_ifunc
;
7805 if (local_syms
== NULL
)
7806 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7807 if (sym_sec
== NULL
)
7810 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7811 pp
= (struct ppc_dyn_relocs
**) vpp
;
7813 if (*pp
== NULL
&& info
->gc_sections
)
7816 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7817 while ((p
= *pp
) != NULL
)
7819 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7830 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7832 bfd_set_error (bfd_error_bad_value
);
7836 /* Remove unused Official Procedure Descriptor entries. Currently we
7837 only remove those associated with functions in discarded link-once
7838 sections, or weakly defined functions that have been overridden. It
7839 would be possible to remove many more entries for statically linked
7843 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7846 bfd_boolean some_edited
= FALSE
;
7847 asection
*need_pad
= NULL
;
7848 struct ppc_link_hash_table
*htab
;
7850 htab
= ppc_hash_table (info
);
7854 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7857 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7858 Elf_Internal_Shdr
*symtab_hdr
;
7859 Elf_Internal_Sym
*local_syms
;
7860 struct _opd_sec_data
*opd
;
7861 bfd_boolean need_edit
, add_aux_fields
, broken
;
7862 bfd_size_type cnt_16b
= 0;
7864 if (!is_ppc64_elf (ibfd
))
7867 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7868 if (sec
== NULL
|| sec
->size
== 0)
7871 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7874 if (sec
->output_section
== bfd_abs_section_ptr
)
7877 /* Look through the section relocs. */
7878 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7882 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7884 /* Read the relocations. */
7885 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7887 if (relstart
== NULL
)
7890 /* First run through the relocs to check they are sane, and to
7891 determine whether we need to edit this opd section. */
7895 relend
= relstart
+ sec
->reloc_count
;
7896 for (rel
= relstart
; rel
< relend
; )
7898 enum elf_ppc64_reloc_type r_type
;
7899 unsigned long r_symndx
;
7901 struct elf_link_hash_entry
*h
;
7902 Elf_Internal_Sym
*sym
;
7905 /* .opd contains an array of 16 or 24 byte entries. We're
7906 only interested in the reloc pointing to a function entry
7908 offset
= rel
->r_offset
;
7909 if (rel
+ 1 == relend
7910 || rel
[1].r_offset
!= offset
+ 8)
7912 /* If someone messes with .opd alignment then after a
7913 "ld -r" we might have padding in the middle of .opd.
7914 Also, there's nothing to prevent someone putting
7915 something silly in .opd with the assembler. No .opd
7916 optimization for them! */
7918 (*_bfd_error_handler
)
7919 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7924 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7925 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7927 (*_bfd_error_handler
)
7928 (_("%B: unexpected reloc type %u in .opd section"),
7934 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7935 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7939 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7941 const char *sym_name
;
7943 sym_name
= h
->root
.root
.string
;
7945 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7948 (*_bfd_error_handler
)
7949 (_("%B: undefined sym `%s' in .opd section"),
7955 /* opd entries are always for functions defined in the
7956 current input bfd. If the symbol isn't defined in the
7957 input bfd, then we won't be using the function in this
7958 bfd; It must be defined in a linkonce section in another
7959 bfd, or is weak. It's also possible that we are
7960 discarding the function due to a linker script /DISCARD/,
7961 which we test for via the output_section. */
7962 if (sym_sec
->owner
!= ibfd
7963 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7967 if (rel
+ 1 == relend
7968 || (rel
+ 2 < relend
7969 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7974 if (sec
->size
== offset
+ 24)
7979 if (sec
->size
== offset
+ 16)
7986 else if (rel
+ 1 < relend
7987 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7988 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7990 if (rel
[0].r_offset
== offset
+ 16)
7992 else if (rel
[0].r_offset
!= offset
+ 24)
7999 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8001 if (!broken
&& (need_edit
|| add_aux_fields
))
8003 Elf_Internal_Rela
*write_rel
;
8004 Elf_Internal_Shdr
*rel_hdr
;
8005 bfd_byte
*rptr
, *wptr
;
8006 bfd_byte
*new_contents
;
8009 new_contents
= NULL
;
8010 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8011 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8012 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8013 if (opd
->adjust
== NULL
)
8015 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8017 /* This seems a waste of time as input .opd sections are all
8018 zeros as generated by gcc, but I suppose there's no reason
8019 this will always be so. We might start putting something in
8020 the third word of .opd entries. */
8021 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8024 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8029 if (local_syms
!= NULL
8030 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8032 if (elf_section_data (sec
)->relocs
!= relstart
)
8036 sec
->contents
= loc
;
8037 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8040 elf_section_data (sec
)->relocs
= relstart
;
8042 new_contents
= sec
->contents
;
8045 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8046 if (new_contents
== NULL
)
8050 wptr
= new_contents
;
8051 rptr
= sec
->contents
;
8052 write_rel
= relstart
;
8053 for (rel
= relstart
; rel
< relend
; )
8055 unsigned long r_symndx
;
8057 struct elf_link_hash_entry
*h
;
8058 struct ppc_link_hash_entry
*fdh
= NULL
;
8059 Elf_Internal_Sym
*sym
;
8061 Elf_Internal_Rela
*next_rel
;
8064 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8065 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8070 if (next_rel
+ 1 == relend
8071 || (next_rel
+ 2 < relend
8072 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8075 /* See if the .opd entry is full 24 byte or
8076 16 byte (with fd_aux entry overlapped with next
8079 if (next_rel
== relend
)
8081 if (sec
->size
== rel
->r_offset
+ 16)
8084 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8088 && h
->root
.root
.string
[0] == '.')
8090 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
8092 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
8093 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8097 skip
= (sym_sec
->owner
!= ibfd
8098 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8101 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8103 /* Arrange for the function descriptor sym
8105 fdh
->elf
.root
.u
.def
.value
= 0;
8106 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8108 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8110 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8115 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8119 if (++rel
== next_rel
)
8122 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8123 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8130 /* We'll be keeping this opd entry. */
8135 /* Redefine the function descriptor symbol to
8136 this location in the opd section. It is
8137 necessary to update the value here rather
8138 than using an array of adjustments as we do
8139 for local symbols, because various places
8140 in the generic ELF code use the value
8141 stored in u.def.value. */
8142 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8143 fdh
->adjust_done
= 1;
8146 /* Local syms are a bit tricky. We could
8147 tweak them as they can be cached, but
8148 we'd need to look through the local syms
8149 for the function descriptor sym which we
8150 don't have at the moment. So keep an
8151 array of adjustments. */
8152 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8153 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8156 memcpy (wptr
, rptr
, opd_ent_size
);
8157 wptr
+= opd_ent_size
;
8158 if (add_aux_fields
&& opd_ent_size
== 16)
8160 memset (wptr
, '\0', 8);
8164 /* We need to adjust any reloc offsets to point to the
8166 for ( ; rel
!= next_rel
; ++rel
)
8168 rel
->r_offset
+= adjust
;
8169 if (write_rel
!= rel
)
8170 memcpy (write_rel
, rel
, sizeof (*rel
));
8175 rptr
+= opd_ent_size
;
8178 sec
->size
= wptr
- new_contents
;
8179 sec
->reloc_count
= write_rel
- relstart
;
8182 free (sec
->contents
);
8183 sec
->contents
= new_contents
;
8186 /* Fudge the header size too, as this is used later in
8187 elf_bfd_final_link if we are emitting relocs. */
8188 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8189 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8192 else if (elf_section_data (sec
)->relocs
!= relstart
)
8195 if (local_syms
!= NULL
8196 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8198 if (!info
->keep_memory
)
8201 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8206 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8208 /* If we are doing a final link and the last .opd entry is just 16 byte
8209 long, add a 8 byte padding after it. */
8210 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8214 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8216 BFD_ASSERT (need_pad
->size
> 0);
8218 p
= bfd_malloc (need_pad
->size
+ 8);
8222 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8223 p
, 0, need_pad
->size
))
8226 need_pad
->contents
= p
;
8227 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8231 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8235 need_pad
->contents
= p
;
8238 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8239 need_pad
->size
+= 8;
8245 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8248 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8250 struct ppc_link_hash_table
*htab
;
8252 htab
= ppc_hash_table (info
);
8256 if (abiversion (info
->output_bfd
) == 1)
8259 if (htab
->params
->no_multi_toc
)
8260 htab
->do_multi_toc
= 0;
8261 else if (!htab
->do_multi_toc
)
8262 htab
->params
->no_multi_toc
= 1;
8264 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8265 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8266 FALSE
, FALSE
, TRUE
));
8267 /* Move dynamic linking info to the function descriptor sym. */
8268 if (htab
->tls_get_addr
!= NULL
)
8269 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8270 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8271 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8272 FALSE
, FALSE
, TRUE
));
8273 if (htab
->params
->tls_get_addr_opt
)
8275 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8277 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8278 FALSE
, FALSE
, TRUE
);
8280 func_desc_adjust (opt
, info
);
8281 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8282 FALSE
, FALSE
, TRUE
);
8284 && (opt_fd
->root
.type
== bfd_link_hash_defined
8285 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8287 /* If glibc supports an optimized __tls_get_addr call stub,
8288 signalled by the presence of __tls_get_addr_opt, and we'll
8289 be calling __tls_get_addr via a plt call stub, then
8290 make __tls_get_addr point to __tls_get_addr_opt. */
8291 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8292 if (htab
->elf
.dynamic_sections_created
8294 && (tga_fd
->type
== STT_FUNC
8295 || tga_fd
->needs_plt
)
8296 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8297 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8298 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8300 struct plt_entry
*ent
;
8302 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8303 if (ent
->plt
.refcount
> 0)
8307 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8308 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8309 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8310 opt_fd
->forced_local
= 0;
8311 if (opt_fd
->dynindx
!= -1)
8313 /* Use __tls_get_addr_opt in dynamic relocations. */
8314 opt_fd
->dynindx
= -1;
8315 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8316 opt_fd
->dynstr_index
);
8317 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8320 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8321 tga
= &htab
->tls_get_addr
->elf
;
8322 if (opt
!= NULL
&& tga
!= NULL
)
8324 tga
->root
.type
= bfd_link_hash_indirect
;
8325 tga
->root
.u
.i
.link
= &opt
->root
;
8326 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8327 opt
->forced_local
= 0;
8328 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8330 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8332 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8333 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8334 if (htab
->tls_get_addr
!= NULL
)
8336 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8337 htab
->tls_get_addr
->is_func
= 1;
8342 else if (htab
->params
->tls_get_addr_opt
< 0)
8343 htab
->params
->tls_get_addr_opt
= 0;
8345 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8348 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8352 branch_reloc_hash_match (const bfd
*ibfd
,
8353 const Elf_Internal_Rela
*rel
,
8354 const struct ppc_link_hash_entry
*hash1
,
8355 const struct ppc_link_hash_entry
*hash2
)
8357 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8358 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8359 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8361 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8363 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8364 struct elf_link_hash_entry
*h
;
8366 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8367 h
= elf_follow_link (h
);
8368 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8374 /* Run through all the TLS relocs looking for optimization
8375 opportunities. The linker has been hacked (see ppc64elf.em) to do
8376 a preliminary section layout so that we know the TLS segment
8377 offsets. We can't optimize earlier because some optimizations need
8378 to know the tp offset, and we need to optimize before allocating
8379 dynamic relocations. */
8382 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8386 struct ppc_link_hash_table
*htab
;
8387 unsigned char *toc_ref
;
8390 if (!bfd_link_executable (info
))
8393 htab
= ppc_hash_table (info
);
8397 /* Make two passes over the relocs. On the first pass, mark toc
8398 entries involved with tls relocs, and check that tls relocs
8399 involved in setting up a tls_get_addr call are indeed followed by
8400 such a call. If they are not, we can't do any tls optimization.
8401 On the second pass twiddle tls_mask flags to notify
8402 relocate_section that optimization can be done, and adjust got
8403 and plt refcounts. */
8405 for (pass
= 0; pass
< 2; ++pass
)
8406 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8408 Elf_Internal_Sym
*locsyms
= NULL
;
8409 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8411 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8412 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8414 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8415 bfd_boolean found_tls_get_addr_arg
= 0;
8417 /* Read the relocations. */
8418 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8420 if (relstart
== NULL
)
8426 relend
= relstart
+ sec
->reloc_count
;
8427 for (rel
= relstart
; rel
< relend
; rel
++)
8429 enum elf_ppc64_reloc_type r_type
;
8430 unsigned long r_symndx
;
8431 struct elf_link_hash_entry
*h
;
8432 Elf_Internal_Sym
*sym
;
8434 unsigned char *tls_mask
;
8435 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8437 bfd_boolean ok_tprel
, is_local
;
8438 long toc_ref_index
= 0;
8439 int expecting_tls_get_addr
= 0;
8440 bfd_boolean ret
= FALSE
;
8442 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8443 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8447 if (elf_section_data (sec
)->relocs
!= relstart
)
8449 if (toc_ref
!= NULL
)
8452 && (elf_symtab_hdr (ibfd
).contents
8453 != (unsigned char *) locsyms
))
8460 if (h
->root
.type
== bfd_link_hash_defined
8461 || h
->root
.type
== bfd_link_hash_defweak
)
8462 value
= h
->root
.u
.def
.value
;
8463 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8467 found_tls_get_addr_arg
= 0;
8472 /* Symbols referenced by TLS relocs must be of type
8473 STT_TLS. So no need for .opd local sym adjust. */
8474 value
= sym
->st_value
;
8483 && h
->root
.type
== bfd_link_hash_undefweak
)
8485 else if (sym_sec
!= NULL
8486 && sym_sec
->output_section
!= NULL
)
8488 value
+= sym_sec
->output_offset
;
8489 value
+= sym_sec
->output_section
->vma
;
8490 value
-= htab
->elf
.tls_sec
->vma
;
8491 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8492 < (bfd_vma
) 1 << 32);
8496 r_type
= ELF64_R_TYPE (rel
->r_info
);
8497 /* If this section has old-style __tls_get_addr calls
8498 without marker relocs, then check that each
8499 __tls_get_addr call reloc is preceded by a reloc
8500 that conceivably belongs to the __tls_get_addr arg
8501 setup insn. If we don't find matching arg setup
8502 relocs, don't do any tls optimization. */
8504 && sec
->has_tls_get_addr_call
8506 && (h
== &htab
->tls_get_addr
->elf
8507 || h
== &htab
->tls_get_addr_fd
->elf
)
8508 && !found_tls_get_addr_arg
8509 && is_branch_reloc (r_type
))
8511 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8512 "TLS optimization disabled\n"),
8513 ibfd
, sec
, rel
->r_offset
);
8518 found_tls_get_addr_arg
= 0;
8521 case R_PPC64_GOT_TLSLD16
:
8522 case R_PPC64_GOT_TLSLD16_LO
:
8523 expecting_tls_get_addr
= 1;
8524 found_tls_get_addr_arg
= 1;
8527 case R_PPC64_GOT_TLSLD16_HI
:
8528 case R_PPC64_GOT_TLSLD16_HA
:
8529 /* These relocs should never be against a symbol
8530 defined in a shared lib. Leave them alone if
8531 that turns out to be the case. */
8538 tls_type
= TLS_TLS
| TLS_LD
;
8541 case R_PPC64_GOT_TLSGD16
:
8542 case R_PPC64_GOT_TLSGD16_LO
:
8543 expecting_tls_get_addr
= 1;
8544 found_tls_get_addr_arg
= 1;
8547 case R_PPC64_GOT_TLSGD16_HI
:
8548 case R_PPC64_GOT_TLSGD16_HA
:
8554 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8556 tls_type
= TLS_TLS
| TLS_GD
;
8559 case R_PPC64_GOT_TPREL16_DS
:
8560 case R_PPC64_GOT_TPREL16_LO_DS
:
8561 case R_PPC64_GOT_TPREL16_HI
:
8562 case R_PPC64_GOT_TPREL16_HA
:
8567 tls_clear
= TLS_TPREL
;
8568 tls_type
= TLS_TLS
| TLS_TPREL
;
8575 found_tls_get_addr_arg
= 1;
8580 case R_PPC64_TOC16_LO
:
8581 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8584 /* Mark this toc entry as referenced by a TLS
8585 code sequence. We can do that now in the
8586 case of R_PPC64_TLS, and after checking for
8587 tls_get_addr for the TOC16 relocs. */
8588 if (toc_ref
== NULL
)
8589 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8590 if (toc_ref
== NULL
)
8594 value
= h
->root
.u
.def
.value
;
8596 value
= sym
->st_value
;
8597 value
+= rel
->r_addend
;
8600 BFD_ASSERT (value
< toc
->size
8601 && toc
->output_offset
% 8 == 0);
8602 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8603 if (r_type
== R_PPC64_TLS
8604 || r_type
== R_PPC64_TLSGD
8605 || r_type
== R_PPC64_TLSLD
)
8607 toc_ref
[toc_ref_index
] = 1;
8611 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8616 expecting_tls_get_addr
= 2;
8619 case R_PPC64_TPREL64
:
8623 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8628 tls_set
= TLS_EXPLICIT
;
8629 tls_clear
= TLS_TPREL
;
8634 case R_PPC64_DTPMOD64
:
8638 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8640 if (rel
+ 1 < relend
8642 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8643 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8647 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8650 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8659 tls_set
= TLS_EXPLICIT
;
8670 if (!expecting_tls_get_addr
8671 || !sec
->has_tls_get_addr_call
)
8674 if (rel
+ 1 < relend
8675 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8677 htab
->tls_get_addr_fd
))
8679 if (expecting_tls_get_addr
== 2)
8681 /* Check for toc tls entries. */
8682 unsigned char *toc_tls
;
8685 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8690 if (toc_tls
!= NULL
)
8692 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8693 found_tls_get_addr_arg
= 1;
8695 toc_ref
[toc_ref_index
] = 1;
8701 if (expecting_tls_get_addr
!= 1)
8704 /* Uh oh, we didn't find the expected call. We
8705 could just mark this symbol to exclude it
8706 from tls optimization but it's safer to skip
8707 the entire optimization. */
8708 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8709 "TLS optimization disabled\n"),
8710 ibfd
, sec
, rel
->r_offset
);
8715 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8717 struct plt_entry
*ent
;
8718 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8721 if (ent
->addend
== 0)
8723 if (ent
->plt
.refcount
> 0)
8725 ent
->plt
.refcount
-= 1;
8726 expecting_tls_get_addr
= 0;
8732 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8734 struct plt_entry
*ent
;
8735 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8738 if (ent
->addend
== 0)
8740 if (ent
->plt
.refcount
> 0)
8741 ent
->plt
.refcount
-= 1;
8749 if ((tls_set
& TLS_EXPLICIT
) == 0)
8751 struct got_entry
*ent
;
8753 /* Adjust got entry for this reloc. */
8757 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8759 for (; ent
!= NULL
; ent
= ent
->next
)
8760 if (ent
->addend
== rel
->r_addend
8761 && ent
->owner
== ibfd
8762 && ent
->tls_type
== tls_type
)
8769 /* We managed to get rid of a got entry. */
8770 if (ent
->got
.refcount
> 0)
8771 ent
->got
.refcount
-= 1;
8776 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8777 we'll lose one or two dyn relocs. */
8778 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8782 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8784 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8790 *tls_mask
|= tls_set
;
8791 *tls_mask
&= ~tls_clear
;
8794 if (elf_section_data (sec
)->relocs
!= relstart
)
8799 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8801 if (!info
->keep_memory
)
8804 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8808 if (toc_ref
!= NULL
)
8813 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8814 the values of any global symbols in a toc section that has been
8815 edited. Globals in toc sections should be a rarity, so this function
8816 sets a flag if any are found in toc sections other than the one just
8817 edited, so that futher hash table traversals can be avoided. */
8819 struct adjust_toc_info
8822 unsigned long *skip
;
8823 bfd_boolean global_toc_syms
;
8826 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8829 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8831 struct ppc_link_hash_entry
*eh
;
8832 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8835 if (h
->root
.type
!= bfd_link_hash_defined
8836 && h
->root
.type
!= bfd_link_hash_defweak
)
8839 eh
= (struct ppc_link_hash_entry
*) h
;
8840 if (eh
->adjust_done
)
8843 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8845 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8846 i
= toc_inf
->toc
->rawsize
>> 3;
8848 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8850 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8852 (*_bfd_error_handler
)
8853 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8856 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8857 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8860 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8861 eh
->adjust_done
= 1;
8863 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8864 toc_inf
->global_toc_syms
= TRUE
;
8869 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8872 ok_lo_toc_insn (unsigned int insn
)
8874 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8875 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8876 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8877 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8878 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8879 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8880 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8881 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8882 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8883 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8884 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8885 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8886 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8887 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8888 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8890 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8891 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8892 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8895 /* Examine all relocs referencing .toc sections in order to remove
8896 unused .toc entries. */
8899 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8902 struct adjust_toc_info toc_inf
;
8903 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8905 htab
->do_toc_opt
= 1;
8906 toc_inf
.global_toc_syms
= TRUE
;
8907 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8909 asection
*toc
, *sec
;
8910 Elf_Internal_Shdr
*symtab_hdr
;
8911 Elf_Internal_Sym
*local_syms
;
8912 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8913 unsigned long *skip
, *drop
;
8914 unsigned char *used
;
8915 unsigned char *keep
, last
, some_unused
;
8917 if (!is_ppc64_elf (ibfd
))
8920 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8923 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8924 || discarded_section (toc
))
8929 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8931 /* Look at sections dropped from the final link. */
8934 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8936 if (sec
->reloc_count
== 0
8937 || !discarded_section (sec
)
8938 || get_opd_info (sec
)
8939 || (sec
->flags
& SEC_ALLOC
) == 0
8940 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8943 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8944 if (relstart
== NULL
)
8947 /* Run through the relocs to see which toc entries might be
8949 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8951 enum elf_ppc64_reloc_type r_type
;
8952 unsigned long r_symndx
;
8954 struct elf_link_hash_entry
*h
;
8955 Elf_Internal_Sym
*sym
;
8958 r_type
= ELF64_R_TYPE (rel
->r_info
);
8965 case R_PPC64_TOC16_LO
:
8966 case R_PPC64_TOC16_HI
:
8967 case R_PPC64_TOC16_HA
:
8968 case R_PPC64_TOC16_DS
:
8969 case R_PPC64_TOC16_LO_DS
:
8973 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8974 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8982 val
= h
->root
.u
.def
.value
;
8984 val
= sym
->st_value
;
8985 val
+= rel
->r_addend
;
8987 if (val
>= toc
->size
)
8990 /* Anything in the toc ought to be aligned to 8 bytes.
8991 If not, don't mark as unused. */
8997 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9002 skip
[val
>> 3] = ref_from_discarded
;
9005 if (elf_section_data (sec
)->relocs
!= relstart
)
9009 /* For largetoc loads of address constants, we can convert
9010 . addis rx,2,addr@got@ha
9011 . ld ry,addr@got@l(rx)
9013 . addis rx,2,addr@toc@ha
9014 . addi ry,rx,addr@toc@l
9015 when addr is within 2G of the toc pointer. This then means
9016 that the word storing "addr" in the toc is no longer needed. */
9018 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9019 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9020 && toc
->reloc_count
!= 0)
9022 /* Read toc relocs. */
9023 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9025 if (toc_relocs
== NULL
)
9028 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9030 enum elf_ppc64_reloc_type r_type
;
9031 unsigned long r_symndx
;
9033 struct elf_link_hash_entry
*h
;
9034 Elf_Internal_Sym
*sym
;
9037 r_type
= ELF64_R_TYPE (rel
->r_info
);
9038 if (r_type
!= R_PPC64_ADDR64
)
9041 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9042 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9047 || sym_sec
->output_section
== NULL
9048 || discarded_section (sym_sec
))
9051 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9056 if (h
->type
== STT_GNU_IFUNC
)
9058 val
= h
->root
.u
.def
.value
;
9062 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9064 val
= sym
->st_value
;
9066 val
+= rel
->r_addend
;
9067 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9069 /* We don't yet know the exact toc pointer value, but we
9070 know it will be somewhere in the toc section. Don't
9071 optimize if the difference from any possible toc
9072 pointer is outside [ff..f80008000, 7fff7fff]. */
9073 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9074 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9077 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9078 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9083 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9088 skip
[rel
->r_offset
>> 3]
9089 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9096 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9100 if (local_syms
!= NULL
9101 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9105 && elf_section_data (sec
)->relocs
!= relstart
)
9107 if (toc_relocs
!= NULL
9108 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9115 /* Now check all kept sections that might reference the toc.
9116 Check the toc itself last. */
9117 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9120 sec
= (sec
== toc
? NULL
9121 : sec
->next
== NULL
? toc
9122 : sec
->next
== toc
&& toc
->next
? toc
->next
9127 if (sec
->reloc_count
== 0
9128 || discarded_section (sec
)
9129 || get_opd_info (sec
)
9130 || (sec
->flags
& SEC_ALLOC
) == 0
9131 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9134 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9136 if (relstart
== NULL
)
9142 /* Mark toc entries referenced as used. */
9146 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9148 enum elf_ppc64_reloc_type r_type
;
9149 unsigned long r_symndx
;
9151 struct elf_link_hash_entry
*h
;
9152 Elf_Internal_Sym
*sym
;
9154 enum {no_check
, check_lo
, check_ha
} insn_check
;
9156 r_type
= ELF64_R_TYPE (rel
->r_info
);
9160 insn_check
= no_check
;
9163 case R_PPC64_GOT_TLSLD16_HA
:
9164 case R_PPC64_GOT_TLSGD16_HA
:
9165 case R_PPC64_GOT_TPREL16_HA
:
9166 case R_PPC64_GOT_DTPREL16_HA
:
9167 case R_PPC64_GOT16_HA
:
9168 case R_PPC64_TOC16_HA
:
9169 insn_check
= check_ha
;
9172 case R_PPC64_GOT_TLSLD16_LO
:
9173 case R_PPC64_GOT_TLSGD16_LO
:
9174 case R_PPC64_GOT_TPREL16_LO_DS
:
9175 case R_PPC64_GOT_DTPREL16_LO_DS
:
9176 case R_PPC64_GOT16_LO
:
9177 case R_PPC64_GOT16_LO_DS
:
9178 case R_PPC64_TOC16_LO
:
9179 case R_PPC64_TOC16_LO_DS
:
9180 insn_check
= check_lo
;
9184 if (insn_check
!= no_check
)
9186 bfd_vma off
= rel
->r_offset
& ~3;
9187 unsigned char buf
[4];
9190 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9195 insn
= bfd_get_32 (ibfd
, buf
);
9196 if (insn_check
== check_lo
9197 ? !ok_lo_toc_insn (insn
)
9198 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9199 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9203 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9204 sprintf (str
, "%#08x", insn
);
9205 info
->callbacks
->einfo
9206 (_("%P: %H: toc optimization is not supported for"
9207 " %s instruction.\n"),
9208 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9215 case R_PPC64_TOC16_LO
:
9216 case R_PPC64_TOC16_HI
:
9217 case R_PPC64_TOC16_HA
:
9218 case R_PPC64_TOC16_DS
:
9219 case R_PPC64_TOC16_LO_DS
:
9220 /* In case we're taking addresses of toc entries. */
9221 case R_PPC64_ADDR64
:
9228 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9229 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9240 val
= h
->root
.u
.def
.value
;
9242 val
= sym
->st_value
;
9243 val
+= rel
->r_addend
;
9245 if (val
>= toc
->size
)
9248 if ((skip
[val
>> 3] & can_optimize
) != 0)
9255 case R_PPC64_TOC16_HA
:
9258 case R_PPC64_TOC16_LO_DS
:
9259 off
= rel
->r_offset
;
9260 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9261 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9267 if ((opc
& (0x3f << 2)) == (58u << 2))
9272 /* Wrong sort of reloc, or not a ld. We may
9273 as well clear ref_from_discarded too. */
9280 /* For the toc section, we only mark as used if this
9281 entry itself isn't unused. */
9282 else if ((used
[rel
->r_offset
>> 3]
9283 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9286 /* Do all the relocs again, to catch reference
9295 if (elf_section_data (sec
)->relocs
!= relstart
)
9299 /* Merge the used and skip arrays. Assume that TOC
9300 doublewords not appearing as either used or unused belong
9301 to to an entry more than one doubleword in size. */
9302 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9303 drop
< skip
+ (toc
->size
+ 7) / 8;
9308 *drop
&= ~ref_from_discarded
;
9309 if ((*drop
& can_optimize
) != 0)
9313 else if ((*drop
& ref_from_discarded
) != 0)
9316 last
= ref_from_discarded
;
9326 bfd_byte
*contents
, *src
;
9328 Elf_Internal_Sym
*sym
;
9329 bfd_boolean local_toc_syms
= FALSE
;
9331 /* Shuffle the toc contents, and at the same time convert the
9332 skip array from booleans into offsets. */
9333 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9336 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9338 for (src
= contents
, off
= 0, drop
= skip
;
9339 src
< contents
+ toc
->size
;
9342 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9347 memcpy (src
- off
, src
, 8);
9351 toc
->rawsize
= toc
->size
;
9352 toc
->size
= src
- contents
- off
;
9354 /* Adjust addends for relocs against the toc section sym,
9355 and optimize any accesses we can. */
9356 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9358 if (sec
->reloc_count
== 0
9359 || discarded_section (sec
))
9362 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9364 if (relstart
== NULL
)
9367 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9369 enum elf_ppc64_reloc_type r_type
;
9370 unsigned long r_symndx
;
9372 struct elf_link_hash_entry
*h
;
9375 r_type
= ELF64_R_TYPE (rel
->r_info
);
9382 case R_PPC64_TOC16_LO
:
9383 case R_PPC64_TOC16_HI
:
9384 case R_PPC64_TOC16_HA
:
9385 case R_PPC64_TOC16_DS
:
9386 case R_PPC64_TOC16_LO_DS
:
9387 case R_PPC64_ADDR64
:
9391 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9392 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9400 val
= h
->root
.u
.def
.value
;
9403 val
= sym
->st_value
;
9405 local_toc_syms
= TRUE
;
9408 val
+= rel
->r_addend
;
9410 if (val
> toc
->rawsize
)
9412 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9414 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9416 Elf_Internal_Rela
*tocrel
9417 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9418 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9422 case R_PPC64_TOC16_HA
:
9423 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9426 case R_PPC64_TOC16_LO_DS
:
9427 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9431 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9433 info
->callbacks
->einfo
9434 (_("%P: %H: %s references "
9435 "optimized away TOC entry\n"),
9436 ibfd
, sec
, rel
->r_offset
,
9437 ppc64_elf_howto_table
[r_type
]->name
);
9438 bfd_set_error (bfd_error_bad_value
);
9441 rel
->r_addend
= tocrel
->r_addend
;
9442 elf_section_data (sec
)->relocs
= relstart
;
9446 if (h
!= NULL
|| sym
->st_value
!= 0)
9449 rel
->r_addend
-= skip
[val
>> 3];
9450 elf_section_data (sec
)->relocs
= relstart
;
9453 if (elf_section_data (sec
)->relocs
!= relstart
)
9457 /* We shouldn't have local or global symbols defined in the TOC,
9458 but handle them anyway. */
9459 if (local_syms
!= NULL
)
9460 for (sym
= local_syms
;
9461 sym
< local_syms
+ symtab_hdr
->sh_info
;
9463 if (sym
->st_value
!= 0
9464 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9468 if (sym
->st_value
> toc
->rawsize
)
9469 i
= toc
->rawsize
>> 3;
9471 i
= sym
->st_value
>> 3;
9473 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9476 (*_bfd_error_handler
)
9477 (_("%s defined on removed toc entry"),
9478 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9481 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9482 sym
->st_value
= (bfd_vma
) i
<< 3;
9485 sym
->st_value
-= skip
[i
];
9486 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9489 /* Adjust any global syms defined in this toc input section. */
9490 if (toc_inf
.global_toc_syms
)
9493 toc_inf
.skip
= skip
;
9494 toc_inf
.global_toc_syms
= FALSE
;
9495 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9499 if (toc
->reloc_count
!= 0)
9501 Elf_Internal_Shdr
*rel_hdr
;
9502 Elf_Internal_Rela
*wrel
;
9505 /* Remove unused toc relocs, and adjust those we keep. */
9506 if (toc_relocs
== NULL
)
9507 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9509 if (toc_relocs
== NULL
)
9513 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9514 if ((skip
[rel
->r_offset
>> 3]
9515 & (ref_from_discarded
| can_optimize
)) == 0)
9517 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9518 wrel
->r_info
= rel
->r_info
;
9519 wrel
->r_addend
= rel
->r_addend
;
9522 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9523 &local_syms
, NULL
, NULL
))
9526 elf_section_data (toc
)->relocs
= toc_relocs
;
9527 toc
->reloc_count
= wrel
- toc_relocs
;
9528 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9529 sz
= rel_hdr
->sh_entsize
;
9530 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9533 else if (toc_relocs
!= NULL
9534 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9537 if (local_syms
!= NULL
9538 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9540 if (!info
->keep_memory
)
9543 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9551 /* Return true iff input section I references the TOC using
9552 instructions limited to +/-32k offsets. */
9555 ppc64_elf_has_small_toc_reloc (asection
*i
)
9557 return (is_ppc64_elf (i
->owner
)
9558 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9561 /* Allocate space for one GOT entry. */
9564 allocate_got (struct elf_link_hash_entry
*h
,
9565 struct bfd_link_info
*info
,
9566 struct got_entry
*gent
)
9568 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9570 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9571 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9573 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9574 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9575 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9577 gent
->got
.offset
= got
->size
;
9578 got
->size
+= entsize
;
9580 dyn
= htab
->elf
.dynamic_sections_created
;
9581 if (h
->type
== STT_GNU_IFUNC
)
9583 htab
->elf
.irelplt
->size
+= rentsize
;
9584 htab
->got_reli_size
+= rentsize
;
9586 else if ((bfd_link_pic (info
)
9587 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9588 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9589 || h
->root
.type
!= bfd_link_hash_undefweak
))
9591 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9592 relgot
->size
+= rentsize
;
9596 /* This function merges got entries in the same toc group. */
9599 merge_got_entries (struct got_entry
**pent
)
9601 struct got_entry
*ent
, *ent2
;
9603 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9604 if (!ent
->is_indirect
)
9605 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9606 if (!ent2
->is_indirect
9607 && ent2
->addend
== ent
->addend
9608 && ent2
->tls_type
== ent
->tls_type
9609 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9611 ent2
->is_indirect
= TRUE
;
9612 ent2
->got
.ent
= ent
;
9616 /* Allocate space in .plt, .got and associated reloc sections for
9620 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9622 struct bfd_link_info
*info
;
9623 struct ppc_link_hash_table
*htab
;
9625 struct ppc_link_hash_entry
*eh
;
9626 struct got_entry
**pgent
, *gent
;
9628 if (h
->root
.type
== bfd_link_hash_indirect
)
9631 info
= (struct bfd_link_info
*) inf
;
9632 htab
= ppc_hash_table (info
);
9636 eh
= (struct ppc_link_hash_entry
*) h
;
9637 /* Run through the TLS GD got entries first if we're changing them
9639 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9640 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9641 if (gent
->got
.refcount
> 0
9642 && (gent
->tls_type
& TLS_GD
) != 0)
9644 /* This was a GD entry that has been converted to TPREL. If
9645 there happens to be a TPREL entry we can use that one. */
9646 struct got_entry
*ent
;
9647 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9648 if (ent
->got
.refcount
> 0
9649 && (ent
->tls_type
& TLS_TPREL
) != 0
9650 && ent
->addend
== gent
->addend
9651 && ent
->owner
== gent
->owner
)
9653 gent
->got
.refcount
= 0;
9657 /* If not, then we'll be using our own TPREL entry. */
9658 if (gent
->got
.refcount
!= 0)
9659 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9662 /* Remove any list entry that won't generate a word in the GOT before
9663 we call merge_got_entries. Otherwise we risk merging to empty
9665 pgent
= &h
->got
.glist
;
9666 while ((gent
= *pgent
) != NULL
)
9667 if (gent
->got
.refcount
> 0)
9669 if ((gent
->tls_type
& TLS_LD
) != 0
9672 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9673 *pgent
= gent
->next
;
9676 pgent
= &gent
->next
;
9679 *pgent
= gent
->next
;
9681 if (!htab
->do_multi_toc
)
9682 merge_got_entries (&h
->got
.glist
);
9684 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9685 if (!gent
->is_indirect
)
9687 /* Make sure this symbol is output as a dynamic symbol.
9688 Undefined weak syms won't yet be marked as dynamic,
9689 nor will all TLS symbols. */
9690 if (h
->dynindx
== -1
9692 && h
->type
!= STT_GNU_IFUNC
9693 && htab
->elf
.dynamic_sections_created
)
9695 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9699 if (!is_ppc64_elf (gent
->owner
))
9702 allocate_got (h
, info
, gent
);
9705 if (!htab
->elf
.dynamic_sections_created
9706 && h
->type
!= STT_GNU_IFUNC
)
9707 eh
->dyn_relocs
= NULL
;
9709 if (eh
->dyn_relocs
!= NULL
)
9711 struct elf_dyn_relocs
*p
, **pp
;
9713 /* In the shared -Bsymbolic case, discard space allocated for
9714 dynamic pc-relative relocs against symbols which turn out to
9715 be defined in regular objects. For the normal shared case,
9716 discard space for relocs that have become local due to symbol
9717 visibility changes. */
9719 if (bfd_link_pic (info
))
9721 /* Relocs that use pc_count are those that appear on a call
9722 insn, or certain REL relocs (see must_be_dyn_reloc) that
9723 can be generated via assembly. We want calls to
9724 protected symbols to resolve directly to the function
9725 rather than going via the plt. If people want function
9726 pointer comparisons to work as expected then they should
9727 avoid writing weird assembly. */
9728 if (SYMBOL_CALLS_LOCAL (info
, h
))
9730 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9732 p
->count
-= p
->pc_count
;
9741 /* Also discard relocs on undefined weak syms with
9742 non-default visibility. */
9743 if (eh
->dyn_relocs
!= NULL
9744 && h
->root
.type
== bfd_link_hash_undefweak
)
9746 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9747 eh
->dyn_relocs
= NULL
;
9749 /* Make sure this symbol is output as a dynamic symbol.
9750 Undefined weak syms won't yet be marked as dynamic. */
9751 else if (h
->dynindx
== -1
9752 && !h
->forced_local
)
9754 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9759 else if (h
->type
== STT_GNU_IFUNC
)
9761 /* A plt entry is always created when making direct calls to
9762 an ifunc, even when building a static executable, but
9763 that doesn't cover all cases. We may have only an ifunc
9764 initialised function pointer for a given ifunc symbol.
9766 For ELFv2, dynamic relocations are not required when
9767 generating a global entry PLT stub. */
9768 if (abiversion (info
->output_bfd
) >= 2)
9770 if (global_entry_stub (h
))
9771 eh
->dyn_relocs
= NULL
;
9774 /* For ELFv1 we have function descriptors. Descriptors need
9775 to be treated like PLT entries and thus have dynamic
9776 relocations. One exception is when the function
9777 descriptor is copied into .dynbss (which should only
9778 happen with ancient versions of gcc). */
9779 else if (h
->needs_copy
)
9780 eh
->dyn_relocs
= NULL
;
9782 else if (ELIMINATE_COPY_RELOCS
)
9784 /* For the non-pic case, discard space for relocs against
9785 symbols which turn out to need copy relocs or are not
9788 /* First make sure this symbol is output as a dynamic symbol.
9789 Undefined weak syms won't yet be marked as dynamic. */
9790 if (h
->root
.type
== bfd_link_hash_undefweak
9795 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
9800 || h
->dynindx
== -1)
9801 eh
->dyn_relocs
= NULL
;
9804 /* Finally, allocate space. */
9805 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9807 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9808 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9809 sreloc
= htab
->elf
.irelplt
;
9810 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9814 if ((htab
->elf
.dynamic_sections_created
9816 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
9817 || h
->type
== STT_GNU_IFUNC
)
9819 struct plt_entry
*pent
;
9820 bfd_boolean doneone
= FALSE
;
9821 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9822 if (pent
->plt
.refcount
> 0)
9824 if (!htab
->elf
.dynamic_sections_created
9825 || h
->dynindx
== -1)
9828 pent
->plt
.offset
= s
->size
;
9829 s
->size
+= PLT_ENTRY_SIZE (htab
);
9830 s
= htab
->elf
.irelplt
;
9834 /* If this is the first .plt entry, make room for the special
9838 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9840 pent
->plt
.offset
= s
->size
;
9842 /* Make room for this entry. */
9843 s
->size
+= PLT_ENTRY_SIZE (htab
);
9845 /* Make room for the .glink code. */
9848 s
->size
+= GLINK_CALL_STUB_SIZE
;
9851 /* We need bigger stubs past index 32767. */
9852 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9859 /* We also need to make an entry in the .rela.plt section. */
9860 s
= htab
->elf
.srelplt
;
9862 s
->size
+= sizeof (Elf64_External_Rela
);
9866 pent
->plt
.offset
= (bfd_vma
) -1;
9869 h
->plt
.plist
= NULL
;
9875 h
->plt
.plist
= NULL
;
9882 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9883 to set up space for global entry stubs. These are put in glink,
9884 after the branch table. */
9887 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9889 struct bfd_link_info
*info
;
9890 struct ppc_link_hash_table
*htab
;
9891 struct plt_entry
*pent
;
9894 if (h
->root
.type
== bfd_link_hash_indirect
)
9897 if (!h
->pointer_equality_needed
)
9904 htab
= ppc_hash_table (info
);
9909 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9910 if (pent
->plt
.offset
!= (bfd_vma
) -1
9911 && pent
->addend
== 0)
9913 /* For ELFv2, if this symbol is not defined in a regular file
9914 and we are not generating a shared library or pie, then we
9915 need to define the symbol in the executable on a call stub.
9916 This is to avoid text relocations. */
9917 s
->size
= (s
->size
+ 15) & -16;
9918 h
->root
.type
= bfd_link_hash_defined
;
9919 h
->root
.u
.def
.section
= s
;
9920 h
->root
.u
.def
.value
= s
->size
;
9927 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9928 read-only sections. */
9931 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9933 if (h
->root
.type
== bfd_link_hash_indirect
)
9936 if (readonly_dynrelocs (h
))
9938 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9940 /* Not an error, just cut short the traversal. */
9946 /* Set the sizes of the dynamic sections. */
9949 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9950 struct bfd_link_info
*info
)
9952 struct ppc_link_hash_table
*htab
;
9957 struct got_entry
*first_tlsld
;
9959 htab
= ppc_hash_table (info
);
9963 dynobj
= htab
->elf
.dynobj
;
9967 if (htab
->elf
.dynamic_sections_created
)
9969 /* Set the contents of the .interp section to the interpreter. */
9970 if (bfd_link_executable (info
) && !info
->nointerp
)
9972 s
= bfd_get_linker_section (dynobj
, ".interp");
9975 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9976 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9980 /* Set up .got offsets for local syms, and space for local dynamic
9982 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9984 struct got_entry
**lgot_ents
;
9985 struct got_entry
**end_lgot_ents
;
9986 struct plt_entry
**local_plt
;
9987 struct plt_entry
**end_local_plt
;
9988 unsigned char *lgot_masks
;
9989 bfd_size_type locsymcount
;
9990 Elf_Internal_Shdr
*symtab_hdr
;
9992 if (!is_ppc64_elf (ibfd
))
9995 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9997 struct ppc_dyn_relocs
*p
;
9999 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10001 if (!bfd_is_abs_section (p
->sec
)
10002 && bfd_is_abs_section (p
->sec
->output_section
))
10004 /* Input section has been discarded, either because
10005 it is a copy of a linkonce section or due to
10006 linker script /DISCARD/, so we'll be discarding
10009 else if (p
->count
!= 0)
10011 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10013 srel
= htab
->elf
.irelplt
;
10014 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10015 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10016 info
->flags
|= DF_TEXTREL
;
10021 lgot_ents
= elf_local_got_ents (ibfd
);
10025 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10026 locsymcount
= symtab_hdr
->sh_info
;
10027 end_lgot_ents
= lgot_ents
+ locsymcount
;
10028 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10029 end_local_plt
= local_plt
+ locsymcount
;
10030 lgot_masks
= (unsigned char *) end_local_plt
;
10031 s
= ppc64_elf_tdata (ibfd
)->got
;
10032 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10034 struct got_entry
**pent
, *ent
;
10037 while ((ent
= *pent
) != NULL
)
10038 if (ent
->got
.refcount
> 0)
10040 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10042 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10047 unsigned int ent_size
= 8;
10048 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10050 ent
->got
.offset
= s
->size
;
10051 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10056 s
->size
+= ent_size
;
10057 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10059 htab
->elf
.irelplt
->size
+= rel_size
;
10060 htab
->got_reli_size
+= rel_size
;
10062 else if (bfd_link_pic (info
))
10064 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10065 srel
->size
+= rel_size
;
10074 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10075 for (; local_plt
< end_local_plt
; ++local_plt
)
10077 struct plt_entry
*ent
;
10079 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10080 if (ent
->plt
.refcount
> 0)
10082 s
= htab
->elf
.iplt
;
10083 ent
->plt
.offset
= s
->size
;
10084 s
->size
+= PLT_ENTRY_SIZE (htab
);
10086 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10089 ent
->plt
.offset
= (bfd_vma
) -1;
10093 /* Allocate global sym .plt and .got entries, and space for global
10094 sym dynamic relocs. */
10095 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10096 /* Stash the end of glink branch table. */
10097 if (htab
->glink
!= NULL
)
10098 htab
->glink
->rawsize
= htab
->glink
->size
;
10100 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10101 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10103 first_tlsld
= NULL
;
10104 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10106 struct got_entry
*ent
;
10108 if (!is_ppc64_elf (ibfd
))
10111 ent
= ppc64_tlsld_got (ibfd
);
10112 if (ent
->got
.refcount
> 0)
10114 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10116 ent
->is_indirect
= TRUE
;
10117 ent
->got
.ent
= first_tlsld
;
10121 if (first_tlsld
== NULL
)
10123 s
= ppc64_elf_tdata (ibfd
)->got
;
10124 ent
->got
.offset
= s
->size
;
10127 if (bfd_link_pic (info
))
10129 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10130 srel
->size
+= sizeof (Elf64_External_Rela
);
10135 ent
->got
.offset
= (bfd_vma
) -1;
10138 /* We now have determined the sizes of the various dynamic sections.
10139 Allocate memory for them. */
10141 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10143 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10146 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10147 /* These haven't been allocated yet; don't strip. */
10149 else if (s
== htab
->elf
.sgot
10150 || s
== htab
->elf
.splt
10151 || s
== htab
->elf
.iplt
10152 || s
== htab
->glink
10153 || s
== htab
->dynbss
)
10155 /* Strip this section if we don't need it; see the
10158 else if (s
== htab
->glink_eh_frame
)
10160 if (!bfd_is_abs_section (s
->output_section
))
10161 /* Not sized yet. */
10164 else if (CONST_STRNEQ (s
->name
, ".rela"))
10168 if (s
!= htab
->elf
.srelplt
)
10171 /* We use the reloc_count field as a counter if we need
10172 to copy relocs into the output file. */
10173 s
->reloc_count
= 0;
10178 /* It's not one of our sections, so don't allocate space. */
10184 /* If we don't need this section, strip it from the
10185 output file. This is mostly to handle .rela.bss and
10186 .rela.plt. We must create both sections in
10187 create_dynamic_sections, because they must be created
10188 before the linker maps input sections to output
10189 sections. The linker does that before
10190 adjust_dynamic_symbol is called, and it is that
10191 function which decides whether anything needs to go
10192 into these sections. */
10193 s
->flags
|= SEC_EXCLUDE
;
10197 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10200 /* Allocate memory for the section contents. We use bfd_zalloc
10201 here in case unused entries are not reclaimed before the
10202 section's contents are written out. This should not happen,
10203 but this way if it does we get a R_PPC64_NONE reloc in .rela
10204 sections instead of garbage.
10205 We also rely on the section contents being zero when writing
10207 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10208 if (s
->contents
== NULL
)
10212 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10214 if (!is_ppc64_elf (ibfd
))
10217 s
= ppc64_elf_tdata (ibfd
)->got
;
10218 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10221 s
->flags
|= SEC_EXCLUDE
;
10224 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10225 if (s
->contents
== NULL
)
10229 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10233 s
->flags
|= SEC_EXCLUDE
;
10236 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10237 if (s
->contents
== NULL
)
10240 s
->reloc_count
= 0;
10245 if (htab
->elf
.dynamic_sections_created
)
10247 bfd_boolean tls_opt
;
10249 /* Add some entries to the .dynamic section. We fill in the
10250 values later, in ppc64_elf_finish_dynamic_sections, but we
10251 must add the entries now so that we get the correct size for
10252 the .dynamic section. The DT_DEBUG entry is filled in by the
10253 dynamic linker and used by the debugger. */
10254 #define add_dynamic_entry(TAG, VAL) \
10255 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10257 if (bfd_link_executable (info
))
10259 if (!add_dynamic_entry (DT_DEBUG
, 0))
10263 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10265 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10266 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10267 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10268 || !add_dynamic_entry (DT_JMPREL
, 0)
10269 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10273 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10275 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10276 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10280 tls_opt
= (htab
->params
->tls_get_addr_opt
10281 && htab
->tls_get_addr_fd
!= NULL
10282 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10283 if (tls_opt
|| !htab
->opd_abi
)
10285 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10291 if (!add_dynamic_entry (DT_RELA
, 0)
10292 || !add_dynamic_entry (DT_RELASZ
, 0)
10293 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10296 /* If any dynamic relocs apply to a read-only section,
10297 then we need a DT_TEXTREL entry. */
10298 if ((info
->flags
& DF_TEXTREL
) == 0)
10299 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10301 if ((info
->flags
& DF_TEXTREL
) != 0)
10303 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10308 #undef add_dynamic_entry
10313 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10316 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10318 if (h
->plt
.plist
!= NULL
10320 && !h
->pointer_equality_needed
)
10323 return _bfd_elf_hash_symbol (h
);
10326 /* Determine the type of stub needed, if any, for a call. */
10328 static inline enum ppc_stub_type
10329 ppc_type_of_stub (asection
*input_sec
,
10330 const Elf_Internal_Rela
*rel
,
10331 struct ppc_link_hash_entry
**hash
,
10332 struct plt_entry
**plt_ent
,
10333 bfd_vma destination
,
10334 unsigned long local_off
)
10336 struct ppc_link_hash_entry
*h
= *hash
;
10338 bfd_vma branch_offset
;
10339 bfd_vma max_branch_offset
;
10340 enum elf_ppc64_reloc_type r_type
;
10344 struct plt_entry
*ent
;
10345 struct ppc_link_hash_entry
*fdh
= h
;
10347 && h
->oh
->is_func_descriptor
)
10349 fdh
= ppc_follow_link (h
->oh
);
10353 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10354 if (ent
->addend
== rel
->r_addend
10355 && ent
->plt
.offset
!= (bfd_vma
) -1)
10358 return ppc_stub_plt_call
;
10361 /* Here, we know we don't have a plt entry. If we don't have a
10362 either a defined function descriptor or a defined entry symbol
10363 in a regular object file, then it is pointless trying to make
10364 any other type of stub. */
10365 if (!is_static_defined (&fdh
->elf
)
10366 && !is_static_defined (&h
->elf
))
10367 return ppc_stub_none
;
10369 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10371 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10372 struct plt_entry
**local_plt
= (struct plt_entry
**)
10373 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10374 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10376 if (local_plt
[r_symndx
] != NULL
)
10378 struct plt_entry
*ent
;
10380 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10381 if (ent
->addend
== rel
->r_addend
10382 && ent
->plt
.offset
!= (bfd_vma
) -1)
10385 return ppc_stub_plt_call
;
10390 /* Determine where the call point is. */
10391 location
= (input_sec
->output_offset
10392 + input_sec
->output_section
->vma
10395 branch_offset
= destination
- location
;
10396 r_type
= ELF64_R_TYPE (rel
->r_info
);
10398 /* Determine if a long branch stub is needed. */
10399 max_branch_offset
= 1 << 25;
10400 if (r_type
!= R_PPC64_REL24
)
10401 max_branch_offset
= 1 << 15;
10403 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10404 /* We need a stub. Figure out whether a long_branch or plt_branch
10405 is needed later. */
10406 return ppc_stub_long_branch
;
10408 return ppc_stub_none
;
10411 /* With power7 weakly ordered memory model, it is possible for ld.so
10412 to update a plt entry in one thread and have another thread see a
10413 stale zero toc entry. To avoid this we need some sort of acquire
10414 barrier in the call stub. One solution is to make the load of the
10415 toc word seem to appear to depend on the load of the function entry
10416 word. Another solution is to test for r2 being zero, and branch to
10417 the appropriate glink entry if so.
10419 . fake dep barrier compare
10420 . ld 12,xxx(2) ld 12,xxx(2)
10421 . mtctr 12 mtctr 12
10422 . xor 11,12,12 ld 2,xxx+8(2)
10423 . add 2,2,11 cmpldi 2,0
10424 . ld 2,xxx+8(2) bnectr+
10425 . bctr b <glink_entry>
10427 The solution involving the compare turns out to be faster, so
10428 that's what we use unless the branch won't reach. */
10430 #define ALWAYS_USE_FAKE_DEP 0
10431 #define ALWAYS_EMIT_R2SAVE 0
10433 #define PPC_LO(v) ((v) & 0xffff)
10434 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10435 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10437 static inline unsigned int
10438 plt_stub_size (struct ppc_link_hash_table
*htab
,
10439 struct ppc_stub_hash_entry
*stub_entry
,
10442 unsigned size
= 12;
10444 if (ALWAYS_EMIT_R2SAVE
10445 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10447 if (PPC_HA (off
) != 0)
10452 if (htab
->params
->plt_static_chain
)
10454 if (htab
->params
->plt_thread_safe
10455 && htab
->elf
.dynamic_sections_created
10456 && stub_entry
->h
!= NULL
10457 && stub_entry
->h
->elf
.dynindx
!= -1)
10459 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10462 if (stub_entry
->h
!= NULL
10463 && (stub_entry
->h
== htab
->tls_get_addr_fd
10464 || stub_entry
->h
== htab
->tls_get_addr
)
10465 && htab
->params
->tls_get_addr_opt
)
10470 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10471 then return the padding needed to do so. */
10472 static inline unsigned int
10473 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10474 struct ppc_stub_hash_entry
*stub_entry
,
10477 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10478 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10479 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10481 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10482 > ((stub_size
- 1) & -stub_align
))
10483 return stub_align
- (stub_off
& (stub_align
- 1));
10487 /* Build a .plt call stub. */
10489 static inline bfd_byte
*
10490 build_plt_stub (struct ppc_link_hash_table
*htab
,
10491 struct ppc_stub_hash_entry
*stub_entry
,
10492 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10494 bfd
*obfd
= htab
->params
->stub_bfd
;
10495 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10496 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10497 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10498 && htab
->elf
.dynamic_sections_created
10499 && stub_entry
->h
!= NULL
10500 && stub_entry
->h
->elf
.dynindx
!= -1);
10501 bfd_boolean use_fake_dep
= plt_thread_safe
;
10502 bfd_vma cmp_branch_off
= 0;
10504 if (!ALWAYS_USE_FAKE_DEP
10507 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10508 || stub_entry
->h
== htab
->tls_get_addr
)
10509 && htab
->params
->tls_get_addr_opt
))
10511 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10512 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10513 / PLT_ENTRY_SIZE (htab
));
10514 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10517 if (pltindex
> 32768)
10518 glinkoff
+= (pltindex
- 32768) * 4;
10520 + htab
->glink
->output_offset
10521 + htab
->glink
->output_section
->vma
);
10522 from
= (p
- stub_entry
->group
->stub_sec
->contents
10523 + 4 * (ALWAYS_EMIT_R2SAVE
10524 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10525 + 4 * (PPC_HA (offset
) != 0)
10526 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10527 != PPC_HA (offset
))
10528 + 4 * (plt_static_chain
!= 0)
10530 + stub_entry
->group
->stub_sec
->output_offset
10531 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10532 cmp_branch_off
= to
- from
;
10533 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10536 if (PPC_HA (offset
) != 0)
10540 if (ALWAYS_EMIT_R2SAVE
10541 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10542 r
[0].r_offset
+= 4;
10543 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10544 r
[1].r_offset
= r
[0].r_offset
+ 4;
10545 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10546 r
[1].r_addend
= r
[0].r_addend
;
10549 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10551 r
[2].r_offset
= r
[1].r_offset
+ 4;
10552 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10553 r
[2].r_addend
= r
[0].r_addend
;
10557 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10558 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10559 r
[2].r_addend
= r
[0].r_addend
+ 8;
10560 if (plt_static_chain
)
10562 r
[3].r_offset
= r
[2].r_offset
+ 4;
10563 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10564 r
[3].r_addend
= r
[0].r_addend
+ 16;
10569 if (ALWAYS_EMIT_R2SAVE
10570 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10571 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10574 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10575 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10579 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10580 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10583 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10585 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10588 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10593 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10594 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10596 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10597 if (plt_static_chain
)
10598 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10605 if (ALWAYS_EMIT_R2SAVE
10606 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10607 r
[0].r_offset
+= 4;
10608 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10611 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10613 r
[1].r_offset
= r
[0].r_offset
+ 4;
10614 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10615 r
[1].r_addend
= r
[0].r_addend
;
10619 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10620 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10621 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10622 if (plt_static_chain
)
10624 r
[2].r_offset
= r
[1].r_offset
+ 4;
10625 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10626 r
[2].r_addend
= r
[0].r_addend
+ 8;
10631 if (ALWAYS_EMIT_R2SAVE
10632 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10633 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10634 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10636 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10638 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10641 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10646 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10647 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10649 if (plt_static_chain
)
10650 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10651 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10654 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10656 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10657 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10658 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10661 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10665 /* Build a special .plt call stub for __tls_get_addr. */
10667 #define LD_R11_0R3 0xe9630000
10668 #define LD_R12_0R3 0xe9830000
10669 #define MR_R0_R3 0x7c601b78
10670 #define CMPDI_R11_0 0x2c2b0000
10671 #define ADD_R3_R12_R13 0x7c6c6a14
10672 #define BEQLR 0x4d820020
10673 #define MR_R3_R0 0x7c030378
10674 #define STD_R11_0R1 0xf9610000
10675 #define BCTRL 0x4e800421
10676 #define LD_R11_0R1 0xe9610000
10677 #define MTLR_R11 0x7d6803a6
10679 static inline bfd_byte
*
10680 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10681 struct ppc_stub_hash_entry
*stub_entry
,
10682 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10684 bfd
*obfd
= htab
->params
->stub_bfd
;
10686 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10687 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10688 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10689 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10690 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10691 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10692 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10693 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10694 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10697 r
[0].r_offset
+= 9 * 4;
10698 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10699 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10701 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10702 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10703 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10704 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10709 static Elf_Internal_Rela
*
10710 get_relocs (asection
*sec
, int count
)
10712 Elf_Internal_Rela
*relocs
;
10713 struct bfd_elf_section_data
*elfsec_data
;
10715 elfsec_data
= elf_section_data (sec
);
10716 relocs
= elfsec_data
->relocs
;
10717 if (relocs
== NULL
)
10719 bfd_size_type relsize
;
10720 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10721 relocs
= bfd_alloc (sec
->owner
, relsize
);
10722 if (relocs
== NULL
)
10724 elfsec_data
->relocs
= relocs
;
10725 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10726 sizeof (Elf_Internal_Shdr
));
10727 if (elfsec_data
->rela
.hdr
== NULL
)
10729 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10730 * sizeof (Elf64_External_Rela
));
10731 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10732 sec
->reloc_count
= 0;
10734 relocs
+= sec
->reloc_count
;
10735 sec
->reloc_count
+= count
;
10740 get_r2off (struct bfd_link_info
*info
,
10741 struct ppc_stub_hash_entry
*stub_entry
)
10743 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10744 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10748 /* Support linking -R objects. Get the toc pointer from the
10751 if (!htab
->opd_abi
)
10753 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10754 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10756 if (strcmp (opd
->name
, ".opd") != 0
10757 || opd
->reloc_count
!= 0)
10759 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10760 stub_entry
->h
->elf
.root
.root
.string
);
10761 bfd_set_error (bfd_error_bad_value
);
10762 return (bfd_vma
) -1;
10764 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10765 return (bfd_vma
) -1;
10766 r2off
= bfd_get_64 (opd
->owner
, buf
);
10767 r2off
-= elf_gp (info
->output_bfd
);
10769 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10774 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10776 struct ppc_stub_hash_entry
*stub_entry
;
10777 struct ppc_branch_hash_entry
*br_entry
;
10778 struct bfd_link_info
*info
;
10779 struct ppc_link_hash_table
*htab
;
10784 Elf_Internal_Rela
*r
;
10787 /* Massage our args to the form they really have. */
10788 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10791 htab
= ppc_hash_table (info
);
10795 /* Make a note of the offset within the stubs for this entry. */
10796 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10797 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10799 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10800 switch (stub_entry
->stub_type
)
10802 case ppc_stub_long_branch
:
10803 case ppc_stub_long_branch_r2off
:
10804 /* Branches are relative. This is where we are going to. */
10805 dest
= (stub_entry
->target_value
10806 + stub_entry
->target_section
->output_offset
10807 + stub_entry
->target_section
->output_section
->vma
);
10808 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10811 /* And this is where we are coming from. */
10812 off
-= (stub_entry
->stub_offset
10813 + stub_entry
->group
->stub_sec
->output_offset
10814 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10817 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10819 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10821 if (r2off
== (bfd_vma
) -1)
10823 htab
->stub_error
= TRUE
;
10826 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10829 if (PPC_HA (r2off
) != 0)
10831 bfd_put_32 (htab
->params
->stub_bfd
,
10832 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10836 if (PPC_LO (r2off
) != 0)
10838 bfd_put_32 (htab
->params
->stub_bfd
,
10839 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10845 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10847 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10849 info
->callbacks
->einfo
10850 (_("%P: long branch stub `%s' offset overflow\n"),
10851 stub_entry
->root
.string
);
10852 htab
->stub_error
= TRUE
;
10856 if (info
->emitrelocations
)
10858 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10861 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10862 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10863 r
->r_addend
= dest
;
10864 if (stub_entry
->h
!= NULL
)
10866 struct elf_link_hash_entry
**hashes
;
10867 unsigned long symndx
;
10868 struct ppc_link_hash_entry
*h
;
10870 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10871 if (hashes
== NULL
)
10873 bfd_size_type hsize
;
10875 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10876 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10877 if (hashes
== NULL
)
10879 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10880 htab
->stub_globals
= 1;
10882 symndx
= htab
->stub_globals
++;
10884 hashes
[symndx
] = &h
->elf
;
10885 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10886 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10887 h
= ppc_follow_link (h
->oh
);
10888 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10889 /* H is an opd symbol. The addend must be zero. */
10893 off
= (h
->elf
.root
.u
.def
.value
10894 + h
->elf
.root
.u
.def
.section
->output_offset
10895 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10896 r
->r_addend
-= off
;
10902 case ppc_stub_plt_branch
:
10903 case ppc_stub_plt_branch_r2off
:
10904 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10905 stub_entry
->root
.string
+ 9,
10907 if (br_entry
== NULL
)
10909 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10910 stub_entry
->root
.string
);
10911 htab
->stub_error
= TRUE
;
10915 dest
= (stub_entry
->target_value
10916 + stub_entry
->target_section
->output_offset
10917 + stub_entry
->target_section
->output_section
->vma
);
10918 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10919 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10921 bfd_put_64 (htab
->brlt
->owner
, dest
,
10922 htab
->brlt
->contents
+ br_entry
->offset
);
10924 if (br_entry
->iter
== htab
->stub_iteration
)
10926 br_entry
->iter
= 0;
10928 if (htab
->relbrlt
!= NULL
)
10930 /* Create a reloc for the branch lookup table entry. */
10931 Elf_Internal_Rela rela
;
10934 rela
.r_offset
= (br_entry
->offset
10935 + htab
->brlt
->output_offset
10936 + htab
->brlt
->output_section
->vma
);
10937 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10938 rela
.r_addend
= dest
;
10940 rl
= htab
->relbrlt
->contents
;
10941 rl
+= (htab
->relbrlt
->reloc_count
++
10942 * sizeof (Elf64_External_Rela
));
10943 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10945 else if (info
->emitrelocations
)
10947 r
= get_relocs (htab
->brlt
, 1);
10950 /* brlt, being SEC_LINKER_CREATED does not go through the
10951 normal reloc processing. Symbols and offsets are not
10952 translated from input file to output file form, so
10953 set up the offset per the output file. */
10954 r
->r_offset
= (br_entry
->offset
10955 + htab
->brlt
->output_offset
10956 + htab
->brlt
->output_section
->vma
);
10957 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10958 r
->r_addend
= dest
;
10962 dest
= (br_entry
->offset
10963 + htab
->brlt
->output_offset
10964 + htab
->brlt
->output_section
->vma
);
10967 - elf_gp (htab
->brlt
->output_section
->owner
)
10968 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
10970 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10972 info
->callbacks
->einfo
10973 (_("%P: linkage table error against `%T'\n"),
10974 stub_entry
->root
.string
);
10975 bfd_set_error (bfd_error_bad_value
);
10976 htab
->stub_error
= TRUE
;
10980 if (info
->emitrelocations
)
10982 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10985 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10986 if (bfd_big_endian (info
->output_bfd
))
10987 r
[0].r_offset
+= 2;
10988 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10989 r
[0].r_offset
+= 4;
10990 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10991 r
[0].r_addend
= dest
;
10992 if (PPC_HA (off
) != 0)
10994 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10995 r
[1].r_offset
= r
[0].r_offset
+ 4;
10996 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10997 r
[1].r_addend
= r
[0].r_addend
;
11001 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11003 if (PPC_HA (off
) != 0)
11006 bfd_put_32 (htab
->params
->stub_bfd
,
11007 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11009 bfd_put_32 (htab
->params
->stub_bfd
,
11010 LD_R12_0R12
| PPC_LO (off
), loc
);
11015 bfd_put_32 (htab
->params
->stub_bfd
,
11016 LD_R12_0R2
| PPC_LO (off
), loc
);
11021 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11023 if (r2off
== (bfd_vma
) -1)
11025 htab
->stub_error
= TRUE
;
11029 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11032 if (PPC_HA (off
) != 0)
11035 bfd_put_32 (htab
->params
->stub_bfd
,
11036 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11038 bfd_put_32 (htab
->params
->stub_bfd
,
11039 LD_R12_0R12
| PPC_LO (off
), loc
);
11042 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11044 if (PPC_HA (r2off
) != 0)
11048 bfd_put_32 (htab
->params
->stub_bfd
,
11049 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11051 if (PPC_LO (r2off
) != 0)
11055 bfd_put_32 (htab
->params
->stub_bfd
,
11056 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11060 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11062 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11065 case ppc_stub_plt_call
:
11066 case ppc_stub_plt_call_r2save
:
11067 if (stub_entry
->h
!= NULL
11068 && stub_entry
->h
->is_func_descriptor
11069 && stub_entry
->h
->oh
!= NULL
)
11071 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11073 /* If the old-ABI "dot-symbol" is undefined make it weak so
11074 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11075 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
11076 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11077 /* Stop undo_symbol_twiddle changing it back to undefined. */
11078 fh
->was_undefined
= 0;
11081 /* Now build the stub. */
11082 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11083 if (dest
>= (bfd_vma
) -2)
11086 plt
= htab
->elf
.splt
;
11087 if (!htab
->elf
.dynamic_sections_created
11088 || stub_entry
->h
== NULL
11089 || stub_entry
->h
->elf
.dynindx
== -1)
11090 plt
= htab
->elf
.iplt
;
11092 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11094 if (stub_entry
->h
== NULL
11095 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11097 Elf_Internal_Rela rela
;
11100 rela
.r_offset
= dest
;
11102 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11104 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11105 rela
.r_addend
= (stub_entry
->target_value
11106 + stub_entry
->target_section
->output_offset
11107 + stub_entry
->target_section
->output_section
->vma
);
11109 rl
= (htab
->elf
.irelplt
->contents
11110 + (htab
->elf
.irelplt
->reloc_count
++
11111 * sizeof (Elf64_External_Rela
)));
11112 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11113 stub_entry
->plt_ent
->plt
.offset
|= 1;
11117 - elf_gp (plt
->output_section
->owner
)
11118 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11120 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11122 info
->callbacks
->einfo
11123 (_("%P: linkage table error against `%T'\n"),
11124 stub_entry
->h
!= NULL
11125 ? stub_entry
->h
->elf
.root
.root
.string
11127 bfd_set_error (bfd_error_bad_value
);
11128 htab
->stub_error
= TRUE
;
11132 if (htab
->params
->plt_stub_align
!= 0)
11134 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11136 stub_entry
->group
->stub_sec
->size
+= pad
;
11137 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11142 if (info
->emitrelocations
)
11144 r
= get_relocs (stub_entry
->group
->stub_sec
,
11145 ((PPC_HA (off
) != 0)
11147 ? 2 + (htab
->params
->plt_static_chain
11148 && PPC_HA (off
+ 16) == PPC_HA (off
))
11152 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11153 if (bfd_big_endian (info
->output_bfd
))
11154 r
[0].r_offset
+= 2;
11155 r
[0].r_addend
= dest
;
11157 if (stub_entry
->h
!= NULL
11158 && (stub_entry
->h
== htab
->tls_get_addr_fd
11159 || stub_entry
->h
== htab
->tls_get_addr
)
11160 && htab
->params
->tls_get_addr_opt
)
11161 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11163 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11167 case ppc_stub_save_res
:
11175 stub_entry
->group
->stub_sec
->size
+= size
;
11177 if (htab
->params
->emit_stub_syms
)
11179 struct elf_link_hash_entry
*h
;
11182 const char *const stub_str
[] = { "long_branch",
11183 "long_branch_r2off",
11185 "plt_branch_r2off",
11189 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11190 len2
= strlen (stub_entry
->root
.string
);
11191 name
= bfd_malloc (len1
+ len2
+ 2);
11194 memcpy (name
, stub_entry
->root
.string
, 9);
11195 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11196 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11197 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11200 if (h
->root
.type
== bfd_link_hash_new
)
11202 h
->root
.type
= bfd_link_hash_defined
;
11203 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11204 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11205 h
->ref_regular
= 1;
11206 h
->def_regular
= 1;
11207 h
->ref_regular_nonweak
= 1;
11208 h
->forced_local
= 1;
11210 h
->root
.linker_def
= 1;
11217 /* As above, but don't actually build the stub. Just bump offset so
11218 we know stub section sizes, and select plt_branch stubs where
11219 long_branch stubs won't do. */
11222 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11224 struct ppc_stub_hash_entry
*stub_entry
;
11225 struct bfd_link_info
*info
;
11226 struct ppc_link_hash_table
*htab
;
11230 /* Massage our args to the form they really have. */
11231 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11234 htab
= ppc_hash_table (info
);
11238 if (stub_entry
->h
!= NULL
11239 && stub_entry
->h
->save_res
11240 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11241 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11243 /* Don't make stubs to out-of-line register save/restore
11244 functions. Instead, emit copies of the functions. */
11245 stub_entry
->group
->needs_save_res
= 1;
11246 stub_entry
->stub_type
= ppc_stub_save_res
;
11250 if (stub_entry
->stub_type
== ppc_stub_plt_call
11251 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11254 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11255 if (off
>= (bfd_vma
) -2)
11257 plt
= htab
->elf
.splt
;
11258 if (!htab
->elf
.dynamic_sections_created
11259 || stub_entry
->h
== NULL
11260 || stub_entry
->h
->elf
.dynindx
== -1)
11261 plt
= htab
->elf
.iplt
;
11262 off
+= (plt
->output_offset
11263 + plt
->output_section
->vma
11264 - elf_gp (plt
->output_section
->owner
)
11265 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11267 size
= plt_stub_size (htab
, stub_entry
, off
);
11268 if (htab
->params
->plt_stub_align
)
11269 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11270 if (info
->emitrelocations
)
11272 stub_entry
->group
->stub_sec
->reloc_count
11273 += ((PPC_HA (off
) != 0)
11275 ? 2 + (htab
->params
->plt_static_chain
11276 && PPC_HA (off
+ 16) == PPC_HA (off
))
11278 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11283 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11286 bfd_vma local_off
= 0;
11288 off
= (stub_entry
->target_value
11289 + stub_entry
->target_section
->output_offset
11290 + stub_entry
->target_section
->output_section
->vma
);
11291 off
-= (stub_entry
->group
->stub_sec
->size
11292 + stub_entry
->group
->stub_sec
->output_offset
11293 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11295 /* Reset the stub type from the plt variant in case we now
11296 can reach with a shorter stub. */
11297 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11298 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11301 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11303 r2off
= get_r2off (info
, stub_entry
);
11304 if (r2off
== (bfd_vma
) -1)
11306 htab
->stub_error
= TRUE
;
11310 if (PPC_HA (r2off
) != 0)
11312 if (PPC_LO (r2off
) != 0)
11317 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11319 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11320 Do the same for -R objects without function descriptors. */
11321 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11322 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11324 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11326 struct ppc_branch_hash_entry
*br_entry
;
11328 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11329 stub_entry
->root
.string
+ 9,
11331 if (br_entry
== NULL
)
11333 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11334 stub_entry
->root
.string
);
11335 htab
->stub_error
= TRUE
;
11339 if (br_entry
->iter
!= htab
->stub_iteration
)
11341 br_entry
->iter
= htab
->stub_iteration
;
11342 br_entry
->offset
= htab
->brlt
->size
;
11343 htab
->brlt
->size
+= 8;
11345 if (htab
->relbrlt
!= NULL
)
11346 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11347 else if (info
->emitrelocations
)
11349 htab
->brlt
->reloc_count
+= 1;
11350 htab
->brlt
->flags
|= SEC_RELOC
;
11354 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11355 off
= (br_entry
->offset
11356 + htab
->brlt
->output_offset
11357 + htab
->brlt
->output_section
->vma
11358 - elf_gp (htab
->brlt
->output_section
->owner
)
11359 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11361 if (info
->emitrelocations
)
11363 stub_entry
->group
->stub_sec
->reloc_count
11364 += 1 + (PPC_HA (off
) != 0);
11365 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11368 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11371 if (PPC_HA (off
) != 0)
11377 if (PPC_HA (off
) != 0)
11380 if (PPC_HA (r2off
) != 0)
11382 if (PPC_LO (r2off
) != 0)
11386 else if (info
->emitrelocations
)
11388 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11389 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11393 stub_entry
->group
->stub_sec
->size
+= size
;
11397 /* Set up various things so that we can make a list of input sections
11398 for each output section included in the link. Returns -1 on error,
11399 0 when no stubs will be needed, and 1 on success. */
11402 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11406 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11411 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11412 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11413 htab
->sec_info
= bfd_zmalloc (amt
);
11414 if (htab
->sec_info
== NULL
)
11417 /* Set toc_off for com, und, abs and ind sections. */
11418 for (id
= 0; id
< 3; id
++)
11419 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11424 /* Set up for first pass at multitoc partitioning. */
11427 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11429 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11431 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11432 htab
->toc_bfd
= NULL
;
11433 htab
->toc_first_sec
= NULL
;
11436 /* The linker repeatedly calls this function for each TOC input section
11437 and linker generated GOT section. Group input bfds such that the toc
11438 within a group is less than 64k in size. */
11441 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11443 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11444 bfd_vma addr
, off
, limit
;
11449 if (!htab
->second_toc_pass
)
11451 /* Keep track of the first .toc or .got section for this input bfd. */
11452 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11456 htab
->toc_bfd
= isec
->owner
;
11457 htab
->toc_first_sec
= isec
;
11460 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11461 off
= addr
- htab
->toc_curr
;
11462 limit
= 0x80008000;
11463 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11465 if (off
+ isec
->size
> limit
)
11467 addr
= (htab
->toc_first_sec
->output_offset
11468 + htab
->toc_first_sec
->output_section
->vma
);
11469 htab
->toc_curr
= addr
;
11470 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11473 /* toc_curr is the base address of this toc group. Set elf_gp
11474 for the input section to be the offset relative to the
11475 output toc base plus 0x8000. Making the input elf_gp an
11476 offset allows us to move the toc as a whole without
11477 recalculating input elf_gp. */
11478 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11479 off
+= TOC_BASE_OFF
;
11481 /* Die if someone uses a linker script that doesn't keep input
11482 file .toc and .got together. */
11484 && elf_gp (isec
->owner
) != 0
11485 && elf_gp (isec
->owner
) != off
)
11488 elf_gp (isec
->owner
) = off
;
11492 /* During the second pass toc_first_sec points to the start of
11493 a toc group, and toc_curr is used to track the old elf_gp.
11494 We use toc_bfd to ensure we only look at each bfd once. */
11495 if (htab
->toc_bfd
== isec
->owner
)
11497 htab
->toc_bfd
= isec
->owner
;
11499 if (htab
->toc_first_sec
== NULL
11500 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11502 htab
->toc_curr
= elf_gp (isec
->owner
);
11503 htab
->toc_first_sec
= isec
;
11505 addr
= (htab
->toc_first_sec
->output_offset
11506 + htab
->toc_first_sec
->output_section
->vma
);
11507 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11508 elf_gp (isec
->owner
) = off
;
11513 /* Called via elf_link_hash_traverse to merge GOT entries for global
11517 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11519 if (h
->root
.type
== bfd_link_hash_indirect
)
11522 merge_got_entries (&h
->got
.glist
);
11527 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11531 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11533 struct got_entry
*gent
;
11535 if (h
->root
.type
== bfd_link_hash_indirect
)
11538 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11539 if (!gent
->is_indirect
)
11540 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11544 /* Called on the first multitoc pass after the last call to
11545 ppc64_elf_next_toc_section. This function removes duplicate GOT
11549 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11551 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11552 struct bfd
*ibfd
, *ibfd2
;
11553 bfd_boolean done_something
;
11555 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11557 if (!htab
->do_multi_toc
)
11560 /* Merge global sym got entries within a toc group. */
11561 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11563 /* And tlsld_got. */
11564 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11566 struct got_entry
*ent
, *ent2
;
11568 if (!is_ppc64_elf (ibfd
))
11571 ent
= ppc64_tlsld_got (ibfd
);
11572 if (!ent
->is_indirect
11573 && ent
->got
.offset
!= (bfd_vma
) -1)
11575 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11577 if (!is_ppc64_elf (ibfd2
))
11580 ent2
= ppc64_tlsld_got (ibfd2
);
11581 if (!ent2
->is_indirect
11582 && ent2
->got
.offset
!= (bfd_vma
) -1
11583 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11585 ent2
->is_indirect
= TRUE
;
11586 ent2
->got
.ent
= ent
;
11592 /* Zap sizes of got sections. */
11593 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11594 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11595 htab
->got_reli_size
= 0;
11597 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11599 asection
*got
, *relgot
;
11601 if (!is_ppc64_elf (ibfd
))
11604 got
= ppc64_elf_tdata (ibfd
)->got
;
11607 got
->rawsize
= got
->size
;
11609 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11610 relgot
->rawsize
= relgot
->size
;
11615 /* Now reallocate the got, local syms first. We don't need to
11616 allocate section contents again since we never increase size. */
11617 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11619 struct got_entry
**lgot_ents
;
11620 struct got_entry
**end_lgot_ents
;
11621 struct plt_entry
**local_plt
;
11622 struct plt_entry
**end_local_plt
;
11623 unsigned char *lgot_masks
;
11624 bfd_size_type locsymcount
;
11625 Elf_Internal_Shdr
*symtab_hdr
;
11628 if (!is_ppc64_elf (ibfd
))
11631 lgot_ents
= elf_local_got_ents (ibfd
);
11635 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11636 locsymcount
= symtab_hdr
->sh_info
;
11637 end_lgot_ents
= lgot_ents
+ locsymcount
;
11638 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11639 end_local_plt
= local_plt
+ locsymcount
;
11640 lgot_masks
= (unsigned char *) end_local_plt
;
11641 s
= ppc64_elf_tdata (ibfd
)->got
;
11642 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11644 struct got_entry
*ent
;
11646 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11648 unsigned int ent_size
= 8;
11649 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11651 ent
->got
.offset
= s
->size
;
11652 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11657 s
->size
+= ent_size
;
11658 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11660 htab
->elf
.irelplt
->size
+= rel_size
;
11661 htab
->got_reli_size
+= rel_size
;
11663 else if (bfd_link_pic (info
))
11665 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11666 srel
->size
+= rel_size
;
11672 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11674 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11676 struct got_entry
*ent
;
11678 if (!is_ppc64_elf (ibfd
))
11681 ent
= ppc64_tlsld_got (ibfd
);
11682 if (!ent
->is_indirect
11683 && ent
->got
.offset
!= (bfd_vma
) -1)
11685 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11686 ent
->got
.offset
= s
->size
;
11688 if (bfd_link_pic (info
))
11690 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11691 srel
->size
+= sizeof (Elf64_External_Rela
);
11696 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11697 if (!done_something
)
11698 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11702 if (!is_ppc64_elf (ibfd
))
11705 got
= ppc64_elf_tdata (ibfd
)->got
;
11708 done_something
= got
->rawsize
!= got
->size
;
11709 if (done_something
)
11714 if (done_something
)
11715 (*htab
->params
->layout_sections_again
) ();
11717 /* Set up for second pass over toc sections to recalculate elf_gp
11718 on input sections. */
11719 htab
->toc_bfd
= NULL
;
11720 htab
->toc_first_sec
= NULL
;
11721 htab
->second_toc_pass
= TRUE
;
11722 return done_something
;
11725 /* Called after second pass of multitoc partitioning. */
11728 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11730 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11732 /* After the second pass, toc_curr tracks the TOC offset used
11733 for code sections below in ppc64_elf_next_input_section. */
11734 htab
->toc_curr
= TOC_BASE_OFF
;
11737 /* No toc references were found in ISEC. If the code in ISEC makes no
11738 calls, then there's no need to use toc adjusting stubs when branching
11739 into ISEC. Actually, indirect calls from ISEC are OK as they will
11740 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11741 needed, and 2 if a cyclical call-graph was found but no other reason
11742 for a stub was detected. If called from the top level, a return of
11743 2 means the same as a return of 0. */
11746 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11750 /* Mark this section as checked. */
11751 isec
->call_check_done
= 1;
11753 /* We know none of our code bearing sections will need toc stubs. */
11754 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11757 if (isec
->size
== 0)
11760 if (isec
->output_section
== NULL
)
11764 if (isec
->reloc_count
!= 0)
11766 Elf_Internal_Rela
*relstart
, *rel
;
11767 Elf_Internal_Sym
*local_syms
;
11768 struct ppc_link_hash_table
*htab
;
11770 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11771 info
->keep_memory
);
11772 if (relstart
== NULL
)
11775 /* Look for branches to outside of this section. */
11777 htab
= ppc_hash_table (info
);
11781 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11783 enum elf_ppc64_reloc_type r_type
;
11784 unsigned long r_symndx
;
11785 struct elf_link_hash_entry
*h
;
11786 struct ppc_link_hash_entry
*eh
;
11787 Elf_Internal_Sym
*sym
;
11789 struct _opd_sec_data
*opd
;
11793 r_type
= ELF64_R_TYPE (rel
->r_info
);
11794 if (r_type
!= R_PPC64_REL24
11795 && r_type
!= R_PPC64_REL14
11796 && r_type
!= R_PPC64_REL14_BRTAKEN
11797 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11800 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11801 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11808 /* Calls to dynamic lib functions go through a plt call stub
11810 eh
= (struct ppc_link_hash_entry
*) h
;
11812 && (eh
->elf
.plt
.plist
!= NULL
11814 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11820 if (sym_sec
== NULL
)
11821 /* Ignore other undefined symbols. */
11824 /* Assume branches to other sections not included in the
11825 link need stubs too, to cover -R and absolute syms. */
11826 if (sym_sec
->output_section
== NULL
)
11833 sym_value
= sym
->st_value
;
11836 if (h
->root
.type
!= bfd_link_hash_defined
11837 && h
->root
.type
!= bfd_link_hash_defweak
)
11839 sym_value
= h
->root
.u
.def
.value
;
11841 sym_value
+= rel
->r_addend
;
11843 /* If this branch reloc uses an opd sym, find the code section. */
11844 opd
= get_opd_info (sym_sec
);
11847 if (h
== NULL
&& opd
->adjust
!= NULL
)
11851 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11853 /* Assume deleted functions won't ever be called. */
11855 sym_value
+= adjust
;
11858 dest
= opd_entry_value (sym_sec
, sym_value
,
11859 &sym_sec
, NULL
, FALSE
);
11860 if (dest
== (bfd_vma
) -1)
11865 + sym_sec
->output_offset
11866 + sym_sec
->output_section
->vma
);
11868 /* Ignore branch to self. */
11869 if (sym_sec
== isec
)
11872 /* If the called function uses the toc, we need a stub. */
11873 if (sym_sec
->has_toc_reloc
11874 || sym_sec
->makes_toc_func_call
)
11880 /* Assume any branch that needs a long branch stub might in fact
11881 need a plt_branch stub. A plt_branch stub uses r2. */
11882 else if (dest
- (isec
->output_offset
11883 + isec
->output_section
->vma
11884 + rel
->r_offset
) + (1 << 25)
11885 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11893 /* If calling back to a section in the process of being
11894 tested, we can't say for sure that no toc adjusting stubs
11895 are needed, so don't return zero. */
11896 else if (sym_sec
->call_check_in_progress
)
11899 /* Branches to another section that itself doesn't have any TOC
11900 references are OK. Recursively call ourselves to check. */
11901 else if (!sym_sec
->call_check_done
)
11905 /* Mark current section as indeterminate, so that other
11906 sections that call back to current won't be marked as
11908 isec
->call_check_in_progress
= 1;
11909 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11910 isec
->call_check_in_progress
= 0;
11921 if (local_syms
!= NULL
11922 && (elf_symtab_hdr (isec
->owner
).contents
11923 != (unsigned char *) local_syms
))
11925 if (elf_section_data (isec
)->relocs
!= relstart
)
11930 && isec
->map_head
.s
!= NULL
11931 && (strcmp (isec
->output_section
->name
, ".init") == 0
11932 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11934 if (isec
->map_head
.s
->has_toc_reloc
11935 || isec
->map_head
.s
->makes_toc_func_call
)
11937 else if (!isec
->map_head
.s
->call_check_done
)
11940 isec
->call_check_in_progress
= 1;
11941 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11942 isec
->call_check_in_progress
= 0;
11949 isec
->makes_toc_func_call
= 1;
11954 /* The linker repeatedly calls this function for each input section,
11955 in the order that input sections are linked into output sections.
11956 Build lists of input sections to determine groupings between which
11957 we may insert linker stubs. */
11960 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11962 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11967 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11968 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
11970 /* This happens to make the list in reverse order,
11971 which is what we want. */
11972 htab
->sec_info
[isec
->id
].u
.list
11973 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
11974 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
11977 if (htab
->multi_toc_needed
)
11979 /* Analyse sections that aren't already flagged as needing a
11980 valid toc pointer. Exclude .fixup for the linux kernel.
11981 .fixup contains branches, but only back to the function that
11982 hit an exception. */
11983 if (!(isec
->has_toc_reloc
11984 || (isec
->flags
& SEC_CODE
) == 0
11985 || strcmp (isec
->name
, ".fixup") == 0
11986 || isec
->call_check_done
))
11988 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11991 /* Make all sections use the TOC assigned for this object file.
11992 This will be wrong for pasted sections; We fix that in
11993 check_pasted_section(). */
11994 if (elf_gp (isec
->owner
) != 0)
11995 htab
->toc_curr
= elf_gp (isec
->owner
);
11998 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12002 /* Check that all .init and .fini sections use the same toc, if they
12003 have toc relocs. */
12006 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12008 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12012 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12013 bfd_vma toc_off
= 0;
12016 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12017 if (i
->has_toc_reloc
)
12020 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12021 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12026 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12027 if (i
->makes_toc_func_call
)
12029 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12033 /* Make sure the whole pasted function uses the same toc offset. */
12035 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12036 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12042 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12044 return (check_pasted_section (info
, ".init")
12045 & check_pasted_section (info
, ".fini"));
12048 /* See whether we can group stub sections together. Grouping stub
12049 sections may result in fewer stubs. More importantly, we need to
12050 put all .init* and .fini* stubs at the beginning of the .init or
12051 .fini output sections respectively, because glibc splits the
12052 _init and _fini functions into multiple parts. Putting a stub in
12053 the middle of a function is not a good idea. */
12056 group_sections (struct bfd_link_info
*info
,
12057 bfd_size_type stub_group_size
,
12058 bfd_boolean stubs_always_before_branch
)
12060 struct ppc_link_hash_table
*htab
;
12062 bfd_boolean suppress_size_errors
;
12064 htab
= ppc_hash_table (info
);
12068 suppress_size_errors
= FALSE
;
12069 if (stub_group_size
== 1)
12071 /* Default values. */
12072 if (stubs_always_before_branch
)
12073 stub_group_size
= 0x1e00000;
12075 stub_group_size
= 0x1c00000;
12076 suppress_size_errors
= TRUE
;
12079 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12083 if (osec
->id
>= htab
->sec_info_arr_size
)
12086 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12087 while (tail
!= NULL
)
12091 bfd_size_type total
;
12092 bfd_boolean big_sec
;
12094 struct map_stub
*group
;
12095 bfd_size_type group_size
;
12098 total
= tail
->size
;
12099 group_size
= (ppc64_elf_section_data (tail
) != NULL
12100 && ppc64_elf_section_data (tail
)->has_14bit_branch
12101 ? stub_group_size
>> 10 : stub_group_size
);
12103 big_sec
= total
> group_size
;
12104 if (big_sec
&& !suppress_size_errors
)
12105 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
12106 tail
->owner
, tail
);
12107 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12109 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12110 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12111 < (ppc64_elf_section_data (prev
) != NULL
12112 && ppc64_elf_section_data (prev
)->has_14bit_branch
12113 ? (group_size
= stub_group_size
>> 10) : group_size
))
12114 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12117 /* OK, the size from the start of CURR to the end is less
12118 than group_size and thus can be handled by one stub
12119 section. (or the tail section is itself larger than
12120 group_size, in which case we may be toast.) We should
12121 really be keeping track of the total size of stubs added
12122 here, as stubs contribute to the final output section
12123 size. That's a little tricky, and this way will only
12124 break if stubs added make the total size more than 2^25,
12125 ie. for the default stub_group_size, if stubs total more
12126 than 2097152 bytes, or nearly 75000 plt call stubs. */
12127 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12130 group
->link_sec
= curr
;
12131 group
->stub_sec
= NULL
;
12132 group
->needs_save_res
= 0;
12133 group
->next
= htab
->group
;
12134 htab
->group
= group
;
12137 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12138 /* Set up this stub group. */
12139 htab
->sec_info
[tail
->id
].u
.group
= group
;
12141 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12143 /* But wait, there's more! Input sections up to group_size
12144 bytes before the stub section can be handled by it too.
12145 Don't do this if we have a really large section after the
12146 stubs, as adding more stubs increases the chance that
12147 branches may not reach into the stub section. */
12148 if (!stubs_always_before_branch
&& !big_sec
)
12151 while (prev
!= NULL
12152 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12153 < (ppc64_elf_section_data (prev
) != NULL
12154 && ppc64_elf_section_data (prev
)->has_14bit_branch
12155 ? (group_size
= stub_group_size
>> 10) : group_size
))
12156 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12159 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12160 htab
->sec_info
[tail
->id
].u
.group
= group
;
12169 static const unsigned char glink_eh_frame_cie
[] =
12171 0, 0, 0, 16, /* length. */
12172 0, 0, 0, 0, /* id. */
12173 1, /* CIE version. */
12174 'z', 'R', 0, /* Augmentation string. */
12175 4, /* Code alignment. */
12176 0x78, /* Data alignment. */
12178 1, /* Augmentation size. */
12179 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12180 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
12184 /* Stripping output sections is normally done before dynamic section
12185 symbols have been allocated. This function is called later, and
12186 handles cases like htab->brlt which is mapped to its own output
12190 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12192 if (isec
->size
== 0
12193 && isec
->output_section
->size
== 0
12194 && !(isec
->output_section
->flags
& SEC_KEEP
)
12195 && !bfd_section_removed_from_list (info
->output_bfd
,
12196 isec
->output_section
)
12197 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12199 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12200 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12201 info
->output_bfd
->section_count
--;
12205 /* Determine and set the size of the stub section for a final link.
12207 The basic idea here is to examine all the relocations looking for
12208 PC-relative calls to a target that is unreachable with a "bl"
12212 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12214 bfd_size_type stub_group_size
;
12215 bfd_boolean stubs_always_before_branch
;
12216 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12221 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12222 htab
->params
->plt_thread_safe
= 1;
12223 if (!htab
->opd_abi
)
12224 htab
->params
->plt_thread_safe
= 0;
12225 else if (htab
->params
->plt_thread_safe
== -1)
12227 static const char *const thread_starter
[] =
12231 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12233 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12234 "mq_notify", "create_timer",
12239 "GOMP_parallel_start",
12240 "GOMP_parallel_loop_static",
12241 "GOMP_parallel_loop_static_start",
12242 "GOMP_parallel_loop_dynamic",
12243 "GOMP_parallel_loop_dynamic_start",
12244 "GOMP_parallel_loop_guided",
12245 "GOMP_parallel_loop_guided_start",
12246 "GOMP_parallel_loop_runtime",
12247 "GOMP_parallel_loop_runtime_start",
12248 "GOMP_parallel_sections",
12249 "GOMP_parallel_sections_start",
12255 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12257 struct elf_link_hash_entry
*h
;
12258 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12259 FALSE
, FALSE
, TRUE
);
12260 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12261 if (htab
->params
->plt_thread_safe
)
12265 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12266 if (htab
->params
->group_size
< 0)
12267 stub_group_size
= -htab
->params
->group_size
;
12269 stub_group_size
= htab
->params
->group_size
;
12271 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12274 #define STUB_SHRINK_ITER 20
12275 /* Loop until no stubs added. After iteration 20 of this loop we may
12276 exit on a stub section shrinking. This is to break out of a
12277 pathological case where adding stubs on one iteration decreases
12278 section gaps (perhaps due to alignment), which then requires
12279 fewer or smaller stubs on the next iteration. */
12284 unsigned int bfd_indx
;
12285 struct map_stub
*group
;
12286 asection
*stub_sec
;
12288 htab
->stub_iteration
+= 1;
12290 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12292 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12294 Elf_Internal_Shdr
*symtab_hdr
;
12296 Elf_Internal_Sym
*local_syms
= NULL
;
12298 if (!is_ppc64_elf (input_bfd
))
12301 /* We'll need the symbol table in a second. */
12302 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12303 if (symtab_hdr
->sh_info
== 0)
12306 /* Walk over each section attached to the input bfd. */
12307 for (section
= input_bfd
->sections
;
12309 section
= section
->next
)
12311 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12313 /* If there aren't any relocs, then there's nothing more
12315 if ((section
->flags
& SEC_RELOC
) == 0
12316 || (section
->flags
& SEC_ALLOC
) == 0
12317 || (section
->flags
& SEC_LOAD
) == 0
12318 || (section
->flags
& SEC_CODE
) == 0
12319 || section
->reloc_count
== 0)
12322 /* If this section is a link-once section that will be
12323 discarded, then don't create any stubs. */
12324 if (section
->output_section
== NULL
12325 || section
->output_section
->owner
!= info
->output_bfd
)
12328 /* Get the relocs. */
12330 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12331 info
->keep_memory
);
12332 if (internal_relocs
== NULL
)
12333 goto error_ret_free_local
;
12335 /* Now examine each relocation. */
12336 irela
= internal_relocs
;
12337 irelaend
= irela
+ section
->reloc_count
;
12338 for (; irela
< irelaend
; irela
++)
12340 enum elf_ppc64_reloc_type r_type
;
12341 unsigned int r_indx
;
12342 enum ppc_stub_type stub_type
;
12343 struct ppc_stub_hash_entry
*stub_entry
;
12344 asection
*sym_sec
, *code_sec
;
12345 bfd_vma sym_value
, code_value
;
12346 bfd_vma destination
;
12347 unsigned long local_off
;
12348 bfd_boolean ok_dest
;
12349 struct ppc_link_hash_entry
*hash
;
12350 struct ppc_link_hash_entry
*fdh
;
12351 struct elf_link_hash_entry
*h
;
12352 Elf_Internal_Sym
*sym
;
12354 const asection
*id_sec
;
12355 struct _opd_sec_data
*opd
;
12356 struct plt_entry
*plt_ent
;
12358 r_type
= ELF64_R_TYPE (irela
->r_info
);
12359 r_indx
= ELF64_R_SYM (irela
->r_info
);
12361 if (r_type
>= R_PPC64_max
)
12363 bfd_set_error (bfd_error_bad_value
);
12364 goto error_ret_free_internal
;
12367 /* Only look for stubs on branch instructions. */
12368 if (r_type
!= R_PPC64_REL24
12369 && r_type
!= R_PPC64_REL14
12370 && r_type
!= R_PPC64_REL14_BRTAKEN
12371 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12374 /* Now determine the call target, its name, value,
12376 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12377 r_indx
, input_bfd
))
12378 goto error_ret_free_internal
;
12379 hash
= (struct ppc_link_hash_entry
*) h
;
12386 sym_value
= sym
->st_value
;
12387 if (sym_sec
!= NULL
12388 && sym_sec
->output_section
!= NULL
)
12391 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12392 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12394 sym_value
= hash
->elf
.root
.u
.def
.value
;
12395 if (sym_sec
->output_section
!= NULL
)
12398 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12399 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12401 /* Recognise an old ABI func code entry sym, and
12402 use the func descriptor sym instead if it is
12404 if (hash
->elf
.root
.root
.string
[0] == '.'
12405 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12407 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12408 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12410 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12411 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12412 if (sym_sec
->output_section
!= NULL
)
12421 bfd_set_error (bfd_error_bad_value
);
12422 goto error_ret_free_internal
;
12429 sym_value
+= irela
->r_addend
;
12430 destination
= (sym_value
12431 + sym_sec
->output_offset
12432 + sym_sec
->output_section
->vma
);
12433 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12438 code_sec
= sym_sec
;
12439 code_value
= sym_value
;
12440 opd
= get_opd_info (sym_sec
);
12445 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12447 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12450 code_value
+= adjust
;
12451 sym_value
+= adjust
;
12453 dest
= opd_entry_value (sym_sec
, sym_value
,
12454 &code_sec
, &code_value
, FALSE
);
12455 if (dest
!= (bfd_vma
) -1)
12457 destination
= dest
;
12460 /* Fixup old ABI sym to point at code
12462 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12463 hash
->elf
.root
.u
.def
.section
= code_sec
;
12464 hash
->elf
.root
.u
.def
.value
= code_value
;
12469 /* Determine what (if any) linker stub is needed. */
12471 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12472 &plt_ent
, destination
,
12475 if (stub_type
!= ppc_stub_plt_call
)
12477 /* Check whether we need a TOC adjusting stub.
12478 Since the linker pastes together pieces from
12479 different object files when creating the
12480 _init and _fini functions, it may be that a
12481 call to what looks like a local sym is in
12482 fact a call needing a TOC adjustment. */
12483 if (code_sec
!= NULL
12484 && code_sec
->output_section
!= NULL
12485 && (htab
->sec_info
[code_sec
->id
].toc_off
12486 != htab
->sec_info
[section
->id
].toc_off
)
12487 && (code_sec
->has_toc_reloc
12488 || code_sec
->makes_toc_func_call
))
12489 stub_type
= ppc_stub_long_branch_r2off
;
12492 if (stub_type
== ppc_stub_none
)
12495 /* __tls_get_addr calls might be eliminated. */
12496 if (stub_type
!= ppc_stub_plt_call
12498 && (hash
== htab
->tls_get_addr
12499 || hash
== htab
->tls_get_addr_fd
)
12500 && section
->has_tls_reloc
12501 && irela
!= internal_relocs
)
12503 /* Get tls info. */
12504 unsigned char *tls_mask
;
12506 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12507 irela
- 1, input_bfd
))
12508 goto error_ret_free_internal
;
12509 if (*tls_mask
!= 0)
12513 if (stub_type
== ppc_stub_plt_call
12514 && irela
+ 1 < irelaend
12515 && irela
[1].r_offset
== irela
->r_offset
+ 4
12516 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12518 if (!tocsave_find (htab
, INSERT
,
12519 &local_syms
, irela
+ 1, input_bfd
))
12520 goto error_ret_free_internal
;
12522 else if (stub_type
== ppc_stub_plt_call
)
12523 stub_type
= ppc_stub_plt_call_r2save
;
12525 /* Support for grouping stub sections. */
12526 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12528 /* Get the name of this stub. */
12529 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12531 goto error_ret_free_internal
;
12533 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12534 stub_name
, FALSE
, FALSE
);
12535 if (stub_entry
!= NULL
)
12537 /* The proper stub has already been created. */
12539 if (stub_type
== ppc_stub_plt_call_r2save
)
12540 stub_entry
->stub_type
= stub_type
;
12544 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12545 if (stub_entry
== NULL
)
12548 error_ret_free_internal
:
12549 if (elf_section_data (section
)->relocs
== NULL
)
12550 free (internal_relocs
);
12551 error_ret_free_local
:
12552 if (local_syms
!= NULL
12553 && (symtab_hdr
->contents
12554 != (unsigned char *) local_syms
))
12559 stub_entry
->stub_type
= stub_type
;
12560 if (stub_type
!= ppc_stub_plt_call
12561 && stub_type
!= ppc_stub_plt_call_r2save
)
12563 stub_entry
->target_value
= code_value
;
12564 stub_entry
->target_section
= code_sec
;
12568 stub_entry
->target_value
= sym_value
;
12569 stub_entry
->target_section
= sym_sec
;
12571 stub_entry
->h
= hash
;
12572 stub_entry
->plt_ent
= plt_ent
;
12573 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12575 if (stub_entry
->h
!= NULL
)
12576 htab
->stub_globals
+= 1;
12579 /* We're done with the internal relocs, free them. */
12580 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12581 free (internal_relocs
);
12584 if (local_syms
!= NULL
12585 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12587 if (!info
->keep_memory
)
12590 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12594 /* We may have added some stubs. Find out the new size of the
12596 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12598 stub_sec
= stub_sec
->next
)
12599 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12601 stub_sec
->rawsize
= stub_sec
->size
;
12602 stub_sec
->size
= 0;
12603 stub_sec
->reloc_count
= 0;
12604 stub_sec
->flags
&= ~SEC_RELOC
;
12607 htab
->brlt
->size
= 0;
12608 htab
->brlt
->reloc_count
= 0;
12609 htab
->brlt
->flags
&= ~SEC_RELOC
;
12610 if (htab
->relbrlt
!= NULL
)
12611 htab
->relbrlt
->size
= 0;
12613 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12615 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12616 if (group
->needs_save_res
)
12617 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12619 if (info
->emitrelocations
12620 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12622 htab
->glink
->reloc_count
= 1;
12623 htab
->glink
->flags
|= SEC_RELOC
;
12626 if (htab
->glink_eh_frame
!= NULL
12627 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12628 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12630 size_t size
= 0, align
;
12632 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12634 stub_sec
= stub_sec
->next
)
12635 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12637 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12640 size
+= sizeof (glink_eh_frame_cie
);
12642 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12644 size
= (size
+ align
) & ~align
;
12645 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12646 htab
->glink_eh_frame
->size
= size
;
12649 if (htab
->params
->plt_stub_align
!= 0)
12650 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12652 stub_sec
= stub_sec
->next
)
12653 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12654 stub_sec
->size
= ((stub_sec
->size
12655 + (1 << htab
->params
->plt_stub_align
) - 1)
12656 & -(1 << htab
->params
->plt_stub_align
));
12658 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12660 stub_sec
= stub_sec
->next
)
12661 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12662 && stub_sec
->rawsize
!= stub_sec
->size
12663 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12664 || stub_sec
->rawsize
< stub_sec
->size
))
12667 if (stub_sec
== NULL
12668 && (htab
->glink_eh_frame
== NULL
12669 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12672 /* Ask the linker to do its stuff. */
12673 (*htab
->params
->layout_sections_again
) ();
12676 if (htab
->glink_eh_frame
!= NULL
12677 && htab
->glink_eh_frame
->size
!= 0)
12680 bfd_byte
*p
, *last_fde
;
12681 size_t last_fde_len
, size
, align
, pad
;
12682 asection
*stub_sec
;
12684 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12687 htab
->glink_eh_frame
->contents
= p
;
12690 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12691 /* CIE length (rewrite in case little-endian). */
12692 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12693 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12694 p
+= sizeof (glink_eh_frame_cie
);
12696 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12698 stub_sec
= stub_sec
->next
)
12699 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12704 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12707 val
= p
- htab
->glink_eh_frame
->contents
;
12708 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12710 /* Offset to stub section, written later. */
12712 /* stub section size. */
12713 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12715 /* Augmentation. */
12720 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12725 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12728 val
= p
- htab
->glink_eh_frame
->contents
;
12729 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12731 /* Offset to .glink, written later. */
12734 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12736 /* Augmentation. */
12739 *p
++ = DW_CFA_advance_loc
+ 1;
12740 *p
++ = DW_CFA_register
;
12742 *p
++ = htab
->opd_abi
? 12 : 0;
12743 *p
++ = DW_CFA_advance_loc
+ 4;
12744 *p
++ = DW_CFA_restore_extended
;
12747 /* Subsume any padding into the last FDE if user .eh_frame
12748 sections are aligned more than glink_eh_frame. Otherwise any
12749 zero padding will be seen as a terminator. */
12750 size
= p
- htab
->glink_eh_frame
->contents
;
12752 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12754 pad
= ((size
+ align
) & ~align
) - size
;
12755 htab
->glink_eh_frame
->size
= size
+ pad
;
12756 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12759 maybe_strip_output (info
, htab
->brlt
);
12760 if (htab
->glink_eh_frame
!= NULL
)
12761 maybe_strip_output (info
, htab
->glink_eh_frame
);
12766 /* Called after we have determined section placement. If sections
12767 move, we'll be called again. Provide a value for TOCstart. */
12770 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12773 bfd_vma TOCstart
, adjust
;
12777 struct elf_link_hash_entry
*h
;
12778 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12780 if (is_elf_hash_table (htab
)
12781 && htab
->hgot
!= NULL
)
12785 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12786 if (is_elf_hash_table (htab
))
12790 && h
->root
.type
== bfd_link_hash_defined
12791 && !h
->root
.linker_def
12792 && (!is_elf_hash_table (htab
)
12793 || h
->def_regular
))
12795 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12796 + h
->root
.u
.def
.section
->output_offset
12797 + h
->root
.u
.def
.section
->output_section
->vma
);
12798 _bfd_set_gp_value (obfd
, TOCstart
);
12803 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12804 order. The TOC starts where the first of these sections starts. */
12805 s
= bfd_get_section_by_name (obfd
, ".got");
12806 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12807 s
= bfd_get_section_by_name (obfd
, ".toc");
12808 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12809 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12810 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12811 s
= bfd_get_section_by_name (obfd
, ".plt");
12812 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12814 /* This may happen for
12815 o references to TOC base (SYM@toc / TOC[tc0]) without a
12817 o bad linker script
12818 o --gc-sections and empty TOC sections
12820 FIXME: Warn user? */
12822 /* Look for a likely section. We probably won't even be
12824 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12825 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12827 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12830 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12831 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12832 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12835 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12836 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12840 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12841 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12847 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12849 /* Force alignment. */
12850 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12851 TOCstart
-= adjust
;
12852 _bfd_set_gp_value (obfd
, TOCstart
);
12854 if (info
!= NULL
&& s
!= NULL
)
12856 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12860 if (htab
->elf
.hgot
!= NULL
)
12862 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12863 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12868 struct bfd_link_hash_entry
*bh
= NULL
;
12869 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12870 s
, TOC_BASE_OFF
- adjust
,
12871 NULL
, FALSE
, FALSE
, &bh
);
12877 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12878 write out any global entry stubs. */
12881 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12883 struct bfd_link_info
*info
;
12884 struct ppc_link_hash_table
*htab
;
12885 struct plt_entry
*pent
;
12888 if (h
->root
.type
== bfd_link_hash_indirect
)
12891 if (!h
->pointer_equality_needed
)
12894 if (h
->def_regular
)
12898 htab
= ppc_hash_table (info
);
12903 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12904 if (pent
->plt
.offset
!= (bfd_vma
) -1
12905 && pent
->addend
== 0)
12911 p
= s
->contents
+ h
->root
.u
.def
.value
;
12912 plt
= htab
->elf
.splt
;
12913 if (!htab
->elf
.dynamic_sections_created
12914 || h
->dynindx
== -1)
12915 plt
= htab
->elf
.iplt
;
12916 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12917 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12919 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12921 info
->callbacks
->einfo
12922 (_("%P: linkage table error against `%T'\n"),
12923 h
->root
.root
.string
);
12924 bfd_set_error (bfd_error_bad_value
);
12925 htab
->stub_error
= TRUE
;
12928 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12929 if (htab
->params
->emit_stub_syms
)
12931 size_t len
= strlen (h
->root
.root
.string
);
12932 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12937 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12938 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12941 if (h
->root
.type
== bfd_link_hash_new
)
12943 h
->root
.type
= bfd_link_hash_defined
;
12944 h
->root
.u
.def
.section
= s
;
12945 h
->root
.u
.def
.value
= p
- s
->contents
;
12946 h
->ref_regular
= 1;
12947 h
->def_regular
= 1;
12948 h
->ref_regular_nonweak
= 1;
12949 h
->forced_local
= 1;
12951 h
->root
.linker_def
= 1;
12955 if (PPC_HA (off
) != 0)
12957 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12960 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12962 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12964 bfd_put_32 (s
->owner
, BCTR
, p
);
12970 /* Build all the stubs associated with the current output file.
12971 The stubs are kept in a hash table attached to the main linker
12972 hash table. This function is called via gldelf64ppc_finish. */
12975 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12978 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12979 struct map_stub
*group
;
12980 asection
*stub_sec
;
12982 int stub_sec_count
= 0;
12987 /* Allocate memory to hold the linker stubs. */
12988 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12990 stub_sec
= stub_sec
->next
)
12991 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12992 && stub_sec
->size
!= 0)
12994 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12995 if (stub_sec
->contents
== NULL
)
12997 stub_sec
->size
= 0;
13000 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13005 /* Build the .glink plt call stub. */
13006 if (htab
->params
->emit_stub_syms
)
13008 struct elf_link_hash_entry
*h
;
13009 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13010 TRUE
, FALSE
, FALSE
);
13013 if (h
->root
.type
== bfd_link_hash_new
)
13015 h
->root
.type
= bfd_link_hash_defined
;
13016 h
->root
.u
.def
.section
= htab
->glink
;
13017 h
->root
.u
.def
.value
= 8;
13018 h
->ref_regular
= 1;
13019 h
->def_regular
= 1;
13020 h
->ref_regular_nonweak
= 1;
13021 h
->forced_local
= 1;
13023 h
->root
.linker_def
= 1;
13026 plt0
= (htab
->elf
.splt
->output_section
->vma
13027 + htab
->elf
.splt
->output_offset
13029 if (info
->emitrelocations
)
13031 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13034 r
->r_offset
= (htab
->glink
->output_offset
13035 + htab
->glink
->output_section
->vma
);
13036 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13037 r
->r_addend
= plt0
;
13039 p
= htab
->glink
->contents
;
13040 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13041 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13045 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13047 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13049 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13051 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13053 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13055 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13057 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13059 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13061 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13063 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13068 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13070 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13072 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13074 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13076 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13078 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13080 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13082 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13084 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13086 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13088 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13090 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13093 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13095 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13097 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13101 /* Build the .glink lazy link call stubs. */
13103 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13109 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13114 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13116 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13121 bfd_put_32 (htab
->glink
->owner
,
13122 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13127 /* Build .glink global entry stubs. */
13128 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13129 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13132 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13134 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13136 if (htab
->brlt
->contents
== NULL
)
13139 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13141 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13142 htab
->relbrlt
->size
);
13143 if (htab
->relbrlt
->contents
== NULL
)
13147 /* Build the stubs as directed by the stub hash table. */
13148 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13150 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13151 if (group
->needs_save_res
)
13153 stub_sec
= group
->stub_sec
;
13154 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13156 if (htab
->params
->emit_stub_syms
)
13160 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13161 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13164 stub_sec
->size
+= htab
->sfpr
->size
;
13167 if (htab
->relbrlt
!= NULL
)
13168 htab
->relbrlt
->reloc_count
= 0;
13170 if (htab
->params
->plt_stub_align
!= 0)
13171 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13173 stub_sec
= stub_sec
->next
)
13174 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13175 stub_sec
->size
= ((stub_sec
->size
13176 + (1 << htab
->params
->plt_stub_align
) - 1)
13177 & -(1 << htab
->params
->plt_stub_align
));
13179 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13181 stub_sec
= stub_sec
->next
)
13182 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13184 stub_sec_count
+= 1;
13185 if (stub_sec
->rawsize
!= stub_sec
->size
13186 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13187 || stub_sec
->rawsize
< stub_sec
->size
))
13191 /* Note that the glink_eh_frame check here is not only testing that
13192 the generated size matched the calculated size but also that
13193 bfd_elf_discard_info didn't make any changes to the section. */
13194 if (stub_sec
!= NULL
13195 || (htab
->glink_eh_frame
!= NULL
13196 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13198 htab
->stub_error
= TRUE
;
13199 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13202 if (htab
->stub_error
)
13207 *stats
= bfd_malloc (500);
13208 if (*stats
== NULL
)
13211 sprintf (*stats
, _("linker stubs in %u group%s\n"
13213 " toc adjust %lu\n"
13214 " long branch %lu\n"
13215 " long toc adj %lu\n"
13217 " plt call toc %lu\n"
13218 " global entry %lu"),
13220 stub_sec_count
== 1 ? "" : "s",
13221 htab
->stub_count
[ppc_stub_long_branch
- 1],
13222 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13223 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13224 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13225 htab
->stub_count
[ppc_stub_plt_call
- 1],
13226 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13227 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13232 /* This function undoes the changes made by add_symbol_adjust. */
13235 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
13237 struct ppc_link_hash_entry
*eh
;
13239 if (h
->root
.type
== bfd_link_hash_indirect
)
13242 eh
= (struct ppc_link_hash_entry
*) h
;
13243 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
13246 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
13251 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
13253 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13256 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
13259 /* What to do when ld finds relocations against symbols defined in
13260 discarded sections. */
13262 static unsigned int
13263 ppc64_elf_action_discarded (asection
*sec
)
13265 if (strcmp (".opd", sec
->name
) == 0)
13268 if (strcmp (".toc", sec
->name
) == 0)
13271 if (strcmp (".toc1", sec
->name
) == 0)
13274 return _bfd_elf_default_action_discarded (sec
);
13277 /* The RELOCATE_SECTION function is called by the ELF backend linker
13278 to handle the relocations for a section.
13280 The relocs are always passed as Rela structures; if the section
13281 actually uses Rel structures, the r_addend field will always be
13284 This function is responsible for adjust the section contents as
13285 necessary, and (if using Rela relocs and generating a
13286 relocatable output file) adjusting the reloc addend as
13289 This function does not have to worry about setting the reloc
13290 address or the reloc symbol index.
13292 LOCAL_SYMS is a pointer to the swapped in local symbols.
13294 LOCAL_SECTIONS is an array giving the section in the input file
13295 corresponding to the st_shndx field of each local symbol.
13297 The global hash table entry for the global symbols can be found
13298 via elf_sym_hashes (input_bfd).
13300 When generating relocatable output, this function must handle
13301 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13302 going to be the section symbol corresponding to the output
13303 section, which means that the addend must be adjusted
13307 ppc64_elf_relocate_section (bfd
*output_bfd
,
13308 struct bfd_link_info
*info
,
13310 asection
*input_section
,
13311 bfd_byte
*contents
,
13312 Elf_Internal_Rela
*relocs
,
13313 Elf_Internal_Sym
*local_syms
,
13314 asection
**local_sections
)
13316 struct ppc_link_hash_table
*htab
;
13317 Elf_Internal_Shdr
*symtab_hdr
;
13318 struct elf_link_hash_entry
**sym_hashes
;
13319 Elf_Internal_Rela
*rel
;
13320 Elf_Internal_Rela
*wrel
;
13321 Elf_Internal_Rela
*relend
;
13322 Elf_Internal_Rela outrel
;
13324 struct got_entry
**local_got_ents
;
13326 bfd_boolean ret
= TRUE
;
13327 bfd_boolean is_opd
;
13328 /* Assume 'at' branch hints. */
13329 bfd_boolean is_isa_v2
= TRUE
;
13330 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
13332 /* Initialize howto table if needed. */
13333 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13336 htab
= ppc_hash_table (info
);
13340 /* Don't relocate stub sections. */
13341 if (input_section
->owner
== htab
->params
->stub_bfd
)
13344 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13346 local_got_ents
= elf_local_got_ents (input_bfd
);
13347 TOCstart
= elf_gp (output_bfd
);
13348 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13349 sym_hashes
= elf_sym_hashes (input_bfd
);
13350 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13352 rel
= wrel
= relocs
;
13353 relend
= relocs
+ input_section
->reloc_count
;
13354 for (; rel
< relend
; wrel
++, rel
++)
13356 enum elf_ppc64_reloc_type r_type
;
13358 bfd_reloc_status_type r
;
13359 Elf_Internal_Sym
*sym
;
13361 struct elf_link_hash_entry
*h_elf
;
13362 struct ppc_link_hash_entry
*h
;
13363 struct ppc_link_hash_entry
*fdh
;
13364 const char *sym_name
;
13365 unsigned long r_symndx
, toc_symndx
;
13366 bfd_vma toc_addend
;
13367 unsigned char tls_mask
, tls_gd
, tls_type
;
13368 unsigned char sym_type
;
13369 bfd_vma relocation
;
13370 bfd_boolean unresolved_reloc
;
13371 bfd_boolean warned
;
13372 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13375 struct ppc_stub_hash_entry
*stub_entry
;
13376 bfd_vma max_br_offset
;
13378 Elf_Internal_Rela orig_rel
;
13379 reloc_howto_type
*howto
;
13380 struct reloc_howto_struct alt_howto
;
13385 r_type
= ELF64_R_TYPE (rel
->r_info
);
13386 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13388 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13389 symbol of the previous ADDR64 reloc. The symbol gives us the
13390 proper TOC base to use. */
13391 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13393 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13395 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13401 unresolved_reloc
= FALSE
;
13404 if (r_symndx
< symtab_hdr
->sh_info
)
13406 /* It's a local symbol. */
13407 struct _opd_sec_data
*opd
;
13409 sym
= local_syms
+ r_symndx
;
13410 sec
= local_sections
[r_symndx
];
13411 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13412 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13413 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13414 opd
= get_opd_info (sec
);
13415 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13417 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13423 /* If this is a relocation against the opd section sym
13424 and we have edited .opd, adjust the reloc addend so
13425 that ld -r and ld --emit-relocs output is correct.
13426 If it is a reloc against some other .opd symbol,
13427 then the symbol value will be adjusted later. */
13428 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13429 rel
->r_addend
+= adjust
;
13431 relocation
+= adjust
;
13437 bfd_boolean ignored
;
13439 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13440 r_symndx
, symtab_hdr
, sym_hashes
,
13441 h_elf
, sec
, relocation
,
13442 unresolved_reloc
, warned
, ignored
);
13443 sym_name
= h_elf
->root
.root
.string
;
13444 sym_type
= h_elf
->type
;
13446 && sec
->owner
== output_bfd
13447 && strcmp (sec
->name
, ".opd") == 0)
13449 /* This is a symbol defined in a linker script. All
13450 such are defined in output sections, even those
13451 defined by simple assignment from a symbol defined in
13452 an input section. Transfer the symbol to an
13453 appropriate input .opd section, so that a branch to
13454 this symbol will be mapped to the location specified
13455 by the opd entry. */
13456 struct bfd_link_order
*lo
;
13457 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13458 if (lo
->type
== bfd_indirect_link_order
)
13460 asection
*isec
= lo
->u
.indirect
.section
;
13461 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13462 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13465 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13466 h_elf
->root
.u
.def
.section
= isec
;
13473 h
= (struct ppc_link_hash_entry
*) h_elf
;
13475 if (sec
!= NULL
&& discarded_section (sec
))
13477 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13478 input_bfd
, input_section
,
13479 contents
+ rel
->r_offset
);
13480 wrel
->r_offset
= rel
->r_offset
;
13482 wrel
->r_addend
= 0;
13484 /* For ld -r, remove relocations in debug sections against
13485 sections defined in discarded sections. Not done for
13486 non-debug to preserve relocs in .eh_frame which the
13487 eh_frame editing code expects to be present. */
13488 if (bfd_link_relocatable (info
)
13489 && (input_section
->flags
& SEC_DEBUGGING
))
13495 if (bfd_link_relocatable (info
))
13498 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13500 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13501 sec
= bfd_abs_section_ptr
;
13502 unresolved_reloc
= FALSE
;
13505 /* TLS optimizations. Replace instruction sequences and relocs
13506 based on information we collected in tls_optimize. We edit
13507 RELOCS so that --emit-relocs will output something sensible
13508 for the final instruction stream. */
13513 tls_mask
= h
->tls_mask
;
13514 else if (local_got_ents
!= NULL
)
13516 struct plt_entry
**local_plt
= (struct plt_entry
**)
13517 (local_got_ents
+ symtab_hdr
->sh_info
);
13518 unsigned char *lgot_masks
= (unsigned char *)
13519 (local_plt
+ symtab_hdr
->sh_info
);
13520 tls_mask
= lgot_masks
[r_symndx
];
13523 && (r_type
== R_PPC64_TLS
13524 || r_type
== R_PPC64_TLSGD
13525 || r_type
== R_PPC64_TLSLD
))
13527 /* Check for toc tls entries. */
13528 unsigned char *toc_tls
;
13530 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13531 &local_syms
, rel
, input_bfd
))
13535 tls_mask
= *toc_tls
;
13538 /* Check that tls relocs are used with tls syms, and non-tls
13539 relocs are used with non-tls syms. */
13540 if (r_symndx
!= STN_UNDEF
13541 && r_type
!= R_PPC64_NONE
13543 || h
->elf
.root
.type
== bfd_link_hash_defined
13544 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13545 && (IS_PPC64_TLS_RELOC (r_type
)
13546 != (sym_type
== STT_TLS
13547 || (sym_type
== STT_SECTION
13548 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13551 && (r_type
== R_PPC64_TLS
13552 || r_type
== R_PPC64_TLSGD
13553 || r_type
== R_PPC64_TLSLD
))
13554 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13557 info
->callbacks
->einfo
13558 (!IS_PPC64_TLS_RELOC (r_type
)
13559 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13560 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13561 input_bfd
, input_section
, rel
->r_offset
,
13562 ppc64_elf_howto_table
[r_type
]->name
,
13566 /* Ensure reloc mapping code below stays sane. */
13567 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13568 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13569 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13570 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13571 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13572 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13573 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13574 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13575 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13576 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13584 case R_PPC64_LO_DS_OPT
:
13585 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13586 if ((insn
& (0x3f << 26)) != 58u << 26)
13588 insn
+= (14u << 26) - (58u << 26);
13589 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13590 r_type
= R_PPC64_TOC16_LO
;
13591 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13594 case R_PPC64_TOC16
:
13595 case R_PPC64_TOC16_LO
:
13596 case R_PPC64_TOC16_DS
:
13597 case R_PPC64_TOC16_LO_DS
:
13599 /* Check for toc tls entries. */
13600 unsigned char *toc_tls
;
13603 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13604 &local_syms
, rel
, input_bfd
);
13610 tls_mask
= *toc_tls
;
13611 if (r_type
== R_PPC64_TOC16_DS
13612 || r_type
== R_PPC64_TOC16_LO_DS
)
13615 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13620 /* If we found a GD reloc pair, then we might be
13621 doing a GD->IE transition. */
13624 tls_gd
= TLS_TPRELGD
;
13625 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13628 else if (retval
== 3)
13630 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13638 case R_PPC64_GOT_TPREL16_HI
:
13639 case R_PPC64_GOT_TPREL16_HA
:
13641 && (tls_mask
& TLS_TPREL
) == 0)
13643 rel
->r_offset
-= d_offset
;
13644 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13645 r_type
= R_PPC64_NONE
;
13646 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13650 case R_PPC64_GOT_TPREL16_DS
:
13651 case R_PPC64_GOT_TPREL16_LO_DS
:
13653 && (tls_mask
& TLS_TPREL
) == 0)
13656 insn
= bfd_get_32 (output_bfd
,
13657 contents
+ rel
->r_offset
- d_offset
);
13659 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13660 bfd_put_32 (output_bfd
, insn
,
13661 contents
+ rel
->r_offset
- d_offset
);
13662 r_type
= R_PPC64_TPREL16_HA
;
13663 if (toc_symndx
!= 0)
13665 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13666 rel
->r_addend
= toc_addend
;
13667 /* We changed the symbol. Start over in order to
13668 get h, sym, sec etc. right. */
13672 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13678 && (tls_mask
& TLS_TPREL
) == 0)
13680 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13681 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13684 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13685 /* Was PPC64_TLS which sits on insn boundary, now
13686 PPC64_TPREL16_LO which is at low-order half-word. */
13687 rel
->r_offset
+= d_offset
;
13688 r_type
= R_PPC64_TPREL16_LO
;
13689 if (toc_symndx
!= 0)
13691 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13692 rel
->r_addend
= toc_addend
;
13693 /* We changed the symbol. Start over in order to
13694 get h, sym, sec etc. right. */
13698 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13702 case R_PPC64_GOT_TLSGD16_HI
:
13703 case R_PPC64_GOT_TLSGD16_HA
:
13704 tls_gd
= TLS_TPRELGD
;
13705 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13709 case R_PPC64_GOT_TLSLD16_HI
:
13710 case R_PPC64_GOT_TLSLD16_HA
:
13711 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13714 if ((tls_mask
& tls_gd
) != 0)
13715 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13716 + R_PPC64_GOT_TPREL16_DS
);
13719 rel
->r_offset
-= d_offset
;
13720 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13721 r_type
= R_PPC64_NONE
;
13723 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13727 case R_PPC64_GOT_TLSGD16
:
13728 case R_PPC64_GOT_TLSGD16_LO
:
13729 tls_gd
= TLS_TPRELGD
;
13730 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13734 case R_PPC64_GOT_TLSLD16
:
13735 case R_PPC64_GOT_TLSLD16_LO
:
13736 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13738 unsigned int insn1
, insn2
, insn3
;
13742 offset
= (bfd_vma
) -1;
13743 /* If not using the newer R_PPC64_TLSGD/LD to mark
13744 __tls_get_addr calls, we must trust that the call
13745 stays with its arg setup insns, ie. that the next
13746 reloc is the __tls_get_addr call associated with
13747 the current reloc. Edit both insns. */
13748 if (input_section
->has_tls_get_addr_call
13749 && rel
+ 1 < relend
13750 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13751 htab
->tls_get_addr
,
13752 htab
->tls_get_addr_fd
))
13753 offset
= rel
[1].r_offset
;
13754 /* We read the low GOT_TLS (or TOC16) insn because we
13755 need to keep the destination reg. It may be
13756 something other than the usual r3, and moved to r3
13757 before the call by intervening code. */
13758 insn1
= bfd_get_32 (output_bfd
,
13759 contents
+ rel
->r_offset
- d_offset
);
13760 if ((tls_mask
& tls_gd
) != 0)
13763 insn1
&= (0x1f << 21) | (0x1f << 16);
13764 insn1
|= 58 << 26; /* ld */
13765 insn2
= 0x7c636a14; /* add 3,3,13 */
13766 if (offset
!= (bfd_vma
) -1)
13767 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13768 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13769 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13770 + R_PPC64_GOT_TPREL16_DS
);
13772 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13773 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13778 insn1
&= 0x1f << 21;
13779 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13780 insn2
= 0x38630000; /* addi 3,3,0 */
13783 /* Was an LD reloc. */
13785 sec
= local_sections
[toc_symndx
];
13787 r_symndx
< symtab_hdr
->sh_info
;
13789 if (local_sections
[r_symndx
] == sec
)
13791 if (r_symndx
>= symtab_hdr
->sh_info
)
13792 r_symndx
= STN_UNDEF
;
13793 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13794 if (r_symndx
!= STN_UNDEF
)
13795 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13796 + sec
->output_offset
13797 + sec
->output_section
->vma
);
13799 else if (toc_symndx
!= 0)
13801 r_symndx
= toc_symndx
;
13802 rel
->r_addend
= toc_addend
;
13804 r_type
= R_PPC64_TPREL16_HA
;
13805 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13806 if (offset
!= (bfd_vma
) -1)
13808 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13809 R_PPC64_TPREL16_LO
);
13810 rel
[1].r_offset
= offset
+ d_offset
;
13811 rel
[1].r_addend
= rel
->r_addend
;
13814 bfd_put_32 (output_bfd
, insn1
,
13815 contents
+ rel
->r_offset
- d_offset
);
13816 if (offset
!= (bfd_vma
) -1)
13818 insn3
= bfd_get_32 (output_bfd
,
13819 contents
+ offset
+ 4);
13821 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13823 rel
[1].r_offset
+= 4;
13824 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13827 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13829 if ((tls_mask
& tls_gd
) == 0
13830 && (tls_gd
== 0 || toc_symndx
!= 0))
13832 /* We changed the symbol. Start over in order
13833 to get h, sym, sec etc. right. */
13839 case R_PPC64_TLSGD
:
13840 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13842 unsigned int insn2
, insn3
;
13843 bfd_vma offset
= rel
->r_offset
;
13845 if ((tls_mask
& TLS_TPRELGD
) != 0)
13848 r_type
= R_PPC64_NONE
;
13849 insn2
= 0x7c636a14; /* add 3,3,13 */
13854 if (toc_symndx
!= 0)
13856 r_symndx
= toc_symndx
;
13857 rel
->r_addend
= toc_addend
;
13859 r_type
= R_PPC64_TPREL16_LO
;
13860 rel
->r_offset
= offset
+ d_offset
;
13861 insn2
= 0x38630000; /* addi 3,3,0 */
13863 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13864 /* Zap the reloc on the _tls_get_addr call too. */
13865 BFD_ASSERT (offset
== rel
[1].r_offset
);
13866 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13867 insn3
= bfd_get_32 (output_bfd
,
13868 contents
+ offset
+ 4);
13870 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13872 rel
->r_offset
+= 4;
13873 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13876 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13877 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13882 case R_PPC64_TLSLD
:
13883 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13885 unsigned int insn2
, insn3
;
13886 bfd_vma offset
= rel
->r_offset
;
13889 sec
= local_sections
[toc_symndx
];
13891 r_symndx
< symtab_hdr
->sh_info
;
13893 if (local_sections
[r_symndx
] == sec
)
13895 if (r_symndx
>= symtab_hdr
->sh_info
)
13896 r_symndx
= STN_UNDEF
;
13897 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13898 if (r_symndx
!= STN_UNDEF
)
13899 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13900 + sec
->output_offset
13901 + sec
->output_section
->vma
);
13903 r_type
= R_PPC64_TPREL16_LO
;
13904 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13905 rel
->r_offset
= offset
+ d_offset
;
13906 /* Zap the reloc on the _tls_get_addr call too. */
13907 BFD_ASSERT (offset
== rel
[1].r_offset
);
13908 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13909 insn2
= 0x38630000; /* addi 3,3,0 */
13910 insn3
= bfd_get_32 (output_bfd
,
13911 contents
+ offset
+ 4);
13913 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13915 rel
->r_offset
+= 4;
13916 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13919 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13924 case R_PPC64_DTPMOD64
:
13925 if (rel
+ 1 < relend
13926 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13927 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13929 if ((tls_mask
& TLS_GD
) == 0)
13931 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13932 if ((tls_mask
& TLS_TPRELGD
) != 0)
13933 r_type
= R_PPC64_TPREL64
;
13936 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13937 r_type
= R_PPC64_NONE
;
13939 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13944 if ((tls_mask
& TLS_LD
) == 0)
13946 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13947 r_type
= R_PPC64_NONE
;
13948 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13953 case R_PPC64_TPREL64
:
13954 if ((tls_mask
& TLS_TPREL
) == 0)
13956 r_type
= R_PPC64_NONE
;
13957 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13961 case R_PPC64_ENTRY
:
13962 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13963 if (!bfd_link_pic (info
)
13964 && !info
->traditional_format
13965 && relocation
+ 0x80008000 <= 0xffffffff)
13967 unsigned int insn1
, insn2
;
13969 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13970 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13971 if ((insn1
& ~0xfffc) == LD_R2_0R12
13972 && insn2
== ADD_R2_R2_R12
)
13974 bfd_put_32 (output_bfd
,
13975 LIS_R2
+ PPC_HA (relocation
),
13976 contents
+ rel
->r_offset
);
13977 bfd_put_32 (output_bfd
,
13978 ADDI_R2_R2
+ PPC_LO (relocation
),
13979 contents
+ rel
->r_offset
+ 4);
13984 relocation
-= (rel
->r_offset
13985 + input_section
->output_offset
13986 + input_section
->output_section
->vma
);
13987 if (relocation
+ 0x80008000 <= 0xffffffff)
13989 unsigned int insn1
, insn2
;
13991 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13992 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13993 if ((insn1
& ~0xfffc) == LD_R2_0R12
13994 && insn2
== ADD_R2_R2_R12
)
13996 bfd_put_32 (output_bfd
,
13997 ADDIS_R2_R12
+ PPC_HA (relocation
),
13998 contents
+ rel
->r_offset
);
13999 bfd_put_32 (output_bfd
,
14000 ADDI_R2_R2
+ PPC_LO (relocation
),
14001 contents
+ rel
->r_offset
+ 4);
14007 case R_PPC64_REL16_HA
:
14008 /* If we are generating a non-PIC executable, edit
14009 . 0: addis 2,12,.TOC.-0b@ha
14010 . addi 2,2,.TOC.-0b@l
14011 used by ELFv2 global entry points to set up r2, to
14014 if .TOC. is in range. */
14015 if (!bfd_link_pic (info
)
14016 && !info
->traditional_format
14018 && rel
->r_addend
== d_offset
14019 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14020 && rel
+ 1 < relend
14021 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14022 && rel
[1].r_offset
== rel
->r_offset
+ 4
14023 && rel
[1].r_addend
== rel
->r_addend
+ 4
14024 && relocation
+ 0x80008000 <= 0xffffffff)
14026 unsigned int insn1
, insn2
;
14027 bfd_vma offset
= rel
->r_offset
- d_offset
;
14028 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
14029 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
14030 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14031 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14033 r_type
= R_PPC64_ADDR16_HA
;
14034 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14035 rel
->r_addend
-= d_offset
;
14036 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14037 rel
[1].r_addend
-= d_offset
+ 4;
14038 bfd_put_32 (output_bfd
, LIS_R2
, contents
+ offset
);
14044 /* Handle other relocations that tweak non-addend part of insn. */
14046 max_br_offset
= 1 << 25;
14047 addend
= rel
->r_addend
;
14048 reloc_dest
= DEST_NORMAL
;
14054 case R_PPC64_TOCSAVE
:
14055 if (relocation
+ addend
== (rel
->r_offset
14056 + input_section
->output_offset
14057 + input_section
->output_section
->vma
)
14058 && tocsave_find (htab
, NO_INSERT
,
14059 &local_syms
, rel
, input_bfd
))
14061 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14063 || insn
== CROR_151515
|| insn
== CROR_313131
)
14064 bfd_put_32 (input_bfd
,
14065 STD_R2_0R1
+ STK_TOC (htab
),
14066 contents
+ rel
->r_offset
);
14070 /* Branch taken prediction relocations. */
14071 case R_PPC64_ADDR14_BRTAKEN
:
14072 case R_PPC64_REL14_BRTAKEN
:
14073 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14076 /* Branch not taken prediction relocations. */
14077 case R_PPC64_ADDR14_BRNTAKEN
:
14078 case R_PPC64_REL14_BRNTAKEN
:
14079 insn
|= bfd_get_32 (output_bfd
,
14080 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14083 case R_PPC64_REL14
:
14084 max_br_offset
= 1 << 15;
14087 case R_PPC64_REL24
:
14088 /* Calls to functions with a different TOC, such as calls to
14089 shared objects, need to alter the TOC pointer. This is
14090 done using a linkage stub. A REL24 branching to these
14091 linkage stubs needs to be followed by a nop, as the nop
14092 will be replaced with an instruction to restore the TOC
14097 && h
->oh
->is_func_descriptor
)
14098 fdh
= ppc_follow_link (h
->oh
);
14099 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14101 if (stub_entry
!= NULL
14102 && (stub_entry
->stub_type
== ppc_stub_plt_call
14103 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14104 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14105 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14107 bfd_boolean can_plt_call
= FALSE
;
14109 /* All of these stubs will modify r2, so there must be a
14110 branch and link followed by a nop. The nop is
14111 replaced by an insn to restore r2. */
14112 if (rel
->r_offset
+ 8 <= input_section
->size
)
14116 br
= bfd_get_32 (input_bfd
,
14117 contents
+ rel
->r_offset
);
14122 nop
= bfd_get_32 (input_bfd
,
14123 contents
+ rel
->r_offset
+ 4);
14125 || nop
== CROR_151515
|| nop
== CROR_313131
)
14128 && (h
== htab
->tls_get_addr_fd
14129 || h
== htab
->tls_get_addr
)
14130 && htab
->params
->tls_get_addr_opt
)
14132 /* Special stub used, leave nop alone. */
14135 bfd_put_32 (input_bfd
,
14136 LD_R2_0R1
+ STK_TOC (htab
),
14137 contents
+ rel
->r_offset
+ 4);
14138 can_plt_call
= TRUE
;
14143 if (!can_plt_call
&& h
!= NULL
)
14145 const char *name
= h
->elf
.root
.root
.string
;
14150 if (strncmp (name
, "__libc_start_main", 17) == 0
14151 && (name
[17] == 0 || name
[17] == '@'))
14153 /* Allow crt1 branch to go via a toc adjusting
14154 stub. Other calls that never return could do
14155 the same, if we could detect such. */
14156 can_plt_call
= TRUE
;
14162 /* g++ as of 20130507 emits self-calls without a
14163 following nop. This is arguably wrong since we
14164 have conflicting information. On the one hand a
14165 global symbol and on the other a local call
14166 sequence, but don't error for this special case.
14167 It isn't possible to cheaply verify we have
14168 exactly such a call. Allow all calls to the same
14170 asection
*code_sec
= sec
;
14172 if (get_opd_info (sec
) != NULL
)
14174 bfd_vma off
= (relocation
+ addend
14175 - sec
->output_section
->vma
14176 - sec
->output_offset
);
14178 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14180 if (code_sec
== input_section
)
14181 can_plt_call
= TRUE
;
14186 if (stub_entry
->stub_type
== ppc_stub_plt_call
14187 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14188 info
->callbacks
->einfo
14189 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14190 "recompile with -fPIC\n"),
14191 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14193 info
->callbacks
->einfo
14194 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14195 "(-mcmodel=small toc adjust stub)\n"),
14196 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14198 bfd_set_error (bfd_error_bad_value
);
14203 && (stub_entry
->stub_type
== ppc_stub_plt_call
14204 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14205 unresolved_reloc
= FALSE
;
14208 if ((stub_entry
== NULL
14209 || stub_entry
->stub_type
== ppc_stub_long_branch
14210 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14211 && get_opd_info (sec
) != NULL
)
14213 /* The branch destination is the value of the opd entry. */
14214 bfd_vma off
= (relocation
+ addend
14215 - sec
->output_section
->vma
14216 - sec
->output_offset
);
14217 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14218 if (dest
!= (bfd_vma
) -1)
14222 reloc_dest
= DEST_OPD
;
14226 /* If the branch is out of reach we ought to have a long
14228 from
= (rel
->r_offset
14229 + input_section
->output_offset
14230 + input_section
->output_section
->vma
);
14232 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14236 if (stub_entry
!= NULL
14237 && (stub_entry
->stub_type
== ppc_stub_long_branch
14238 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14239 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14240 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14241 || (relocation
+ addend
- from
+ max_br_offset
14242 < 2 * max_br_offset
)))
14243 /* Don't use the stub if this branch is in range. */
14246 if (stub_entry
!= NULL
)
14248 /* Munge up the value and addend so that we call the stub
14249 rather than the procedure directly. */
14250 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14252 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14253 relocation
+= (stub_sec
->output_offset
14254 + stub_sec
->output_section
->vma
14255 + stub_sec
->size
- htab
->sfpr
->size
14256 - htab
->sfpr
->output_offset
14257 - htab
->sfpr
->output_section
->vma
);
14259 relocation
= (stub_entry
->stub_offset
14260 + stub_sec
->output_offset
14261 + stub_sec
->output_section
->vma
);
14263 reloc_dest
= DEST_STUB
;
14265 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14266 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14267 && (ALWAYS_EMIT_R2SAVE
14268 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14269 && rel
+ 1 < relend
14270 && rel
[1].r_offset
== rel
->r_offset
+ 4
14271 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14279 /* Set 'a' bit. This is 0b00010 in BO field for branch
14280 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14281 for branch on CTR insns (BO == 1a00t or 1a01t). */
14282 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14283 insn
|= 0x02 << 21;
14284 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14285 insn
|= 0x08 << 21;
14291 /* Invert 'y' bit if not the default. */
14292 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14293 insn
^= 0x01 << 21;
14296 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
14299 /* NOP out calls to undefined weak functions.
14300 We can thus call a weak function without first
14301 checking whether the function is defined. */
14303 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14304 && h
->elf
.dynindx
== -1
14305 && r_type
== R_PPC64_REL24
14309 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
14315 /* Set `addend'. */
14320 info
->callbacks
->einfo
14321 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14322 input_bfd
, (int) r_type
, sym_name
);
14324 bfd_set_error (bfd_error_bad_value
);
14330 case R_PPC64_TLSGD
:
14331 case R_PPC64_TLSLD
:
14332 case R_PPC64_TOCSAVE
:
14333 case R_PPC64_GNU_VTINHERIT
:
14334 case R_PPC64_GNU_VTENTRY
:
14335 case R_PPC64_ENTRY
:
14338 /* GOT16 relocations. Like an ADDR16 using the symbol's
14339 address in the GOT as relocation value instead of the
14340 symbol's value itself. Also, create a GOT entry for the
14341 symbol and put the symbol value there. */
14342 case R_PPC64_GOT_TLSGD16
:
14343 case R_PPC64_GOT_TLSGD16_LO
:
14344 case R_PPC64_GOT_TLSGD16_HI
:
14345 case R_PPC64_GOT_TLSGD16_HA
:
14346 tls_type
= TLS_TLS
| TLS_GD
;
14349 case R_PPC64_GOT_TLSLD16
:
14350 case R_PPC64_GOT_TLSLD16_LO
:
14351 case R_PPC64_GOT_TLSLD16_HI
:
14352 case R_PPC64_GOT_TLSLD16_HA
:
14353 tls_type
= TLS_TLS
| TLS_LD
;
14356 case R_PPC64_GOT_TPREL16_DS
:
14357 case R_PPC64_GOT_TPREL16_LO_DS
:
14358 case R_PPC64_GOT_TPREL16_HI
:
14359 case R_PPC64_GOT_TPREL16_HA
:
14360 tls_type
= TLS_TLS
| TLS_TPREL
;
14363 case R_PPC64_GOT_DTPREL16_DS
:
14364 case R_PPC64_GOT_DTPREL16_LO_DS
:
14365 case R_PPC64_GOT_DTPREL16_HI
:
14366 case R_PPC64_GOT_DTPREL16_HA
:
14367 tls_type
= TLS_TLS
| TLS_DTPREL
;
14370 case R_PPC64_GOT16
:
14371 case R_PPC64_GOT16_LO
:
14372 case R_PPC64_GOT16_HI
:
14373 case R_PPC64_GOT16_HA
:
14374 case R_PPC64_GOT16_DS
:
14375 case R_PPC64_GOT16_LO_DS
:
14378 /* Relocation is to the entry for this symbol in the global
14383 unsigned long indx
= 0;
14384 struct got_entry
*ent
;
14386 if (tls_type
== (TLS_TLS
| TLS_LD
)
14388 || !h
->elf
.def_dynamic
))
14389 ent
= ppc64_tlsld_got (input_bfd
);
14395 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14396 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
),
14398 || (bfd_link_pic (info
)
14399 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14400 /* This is actually a static link, or it is a
14401 -Bsymbolic link and the symbol is defined
14402 locally, or the symbol was forced to be local
14403 because of a version file. */
14407 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14408 indx
= h
->elf
.dynindx
;
14409 unresolved_reloc
= FALSE
;
14411 ent
= h
->elf
.got
.glist
;
14415 if (local_got_ents
== NULL
)
14417 ent
= local_got_ents
[r_symndx
];
14420 for (; ent
!= NULL
; ent
= ent
->next
)
14421 if (ent
->addend
== orig_rel
.r_addend
14422 && ent
->owner
== input_bfd
14423 && ent
->tls_type
== tls_type
)
14429 if (ent
->is_indirect
)
14430 ent
= ent
->got
.ent
;
14431 offp
= &ent
->got
.offset
;
14432 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14436 /* The offset must always be a multiple of 8. We use the
14437 least significant bit to record whether we have already
14438 processed this entry. */
14440 if ((off
& 1) != 0)
14444 /* Generate relocs for the dynamic linker, except in
14445 the case of TLSLD where we'll use one entry per
14453 ? h
->elf
.type
== STT_GNU_IFUNC
14454 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14456 relgot
= htab
->elf
.irelplt
;
14457 else if ((bfd_link_pic (info
) || indx
!= 0)
14459 || (tls_type
== (TLS_TLS
| TLS_LD
)
14460 && !h
->elf
.def_dynamic
)
14461 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14462 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14463 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14464 if (relgot
!= NULL
)
14466 outrel
.r_offset
= (got
->output_section
->vma
14467 + got
->output_offset
14469 outrel
.r_addend
= addend
;
14470 if (tls_type
& (TLS_LD
| TLS_GD
))
14472 outrel
.r_addend
= 0;
14473 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14474 if (tls_type
== (TLS_TLS
| TLS_GD
))
14476 loc
= relgot
->contents
;
14477 loc
+= (relgot
->reloc_count
++
14478 * sizeof (Elf64_External_Rela
));
14479 bfd_elf64_swap_reloca_out (output_bfd
,
14481 outrel
.r_offset
+= 8;
14482 outrel
.r_addend
= addend
;
14484 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14487 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14488 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14489 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14490 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14491 else if (indx
!= 0)
14492 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14496 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14498 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14500 /* Write the .got section contents for the sake
14502 loc
= got
->contents
+ off
;
14503 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14507 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14509 outrel
.r_addend
+= relocation
;
14510 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14512 if (htab
->elf
.tls_sec
== NULL
)
14513 outrel
.r_addend
= 0;
14515 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14518 loc
= relgot
->contents
;
14519 loc
+= (relgot
->reloc_count
++
14520 * sizeof (Elf64_External_Rela
));
14521 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14524 /* Init the .got section contents here if we're not
14525 emitting a reloc. */
14528 relocation
+= addend
;
14529 if (tls_type
== (TLS_TLS
| TLS_LD
))
14531 else if (tls_type
!= 0)
14533 if (htab
->elf
.tls_sec
== NULL
)
14537 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14538 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14539 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14542 if (tls_type
== (TLS_TLS
| TLS_GD
))
14544 bfd_put_64 (output_bfd
, relocation
,
14545 got
->contents
+ off
+ 8);
14550 bfd_put_64 (output_bfd
, relocation
,
14551 got
->contents
+ off
);
14555 if (off
>= (bfd_vma
) -2)
14558 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14559 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14563 case R_PPC64_PLT16_HA
:
14564 case R_PPC64_PLT16_HI
:
14565 case R_PPC64_PLT16_LO
:
14566 case R_PPC64_PLT32
:
14567 case R_PPC64_PLT64
:
14568 /* Relocation is to the entry for this symbol in the
14569 procedure linkage table. */
14571 struct plt_entry
**plt_list
= NULL
;
14573 plt_list
= &h
->elf
.plt
.plist
;
14574 else if (local_got_ents
!= NULL
)
14576 struct plt_entry
**local_plt
= (struct plt_entry
**)
14577 (local_got_ents
+ symtab_hdr
->sh_info
);
14578 unsigned char *local_got_tls_masks
= (unsigned char *)
14579 (local_plt
+ symtab_hdr
->sh_info
);
14580 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14581 plt_list
= local_plt
+ r_symndx
;
14585 struct plt_entry
*ent
;
14587 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14588 if (ent
->plt
.offset
!= (bfd_vma
) -1
14589 && ent
->addend
== orig_rel
.r_addend
)
14593 plt
= htab
->elf
.splt
;
14594 if (!htab
->elf
.dynamic_sections_created
14596 || h
->elf
.dynindx
== -1)
14597 plt
= htab
->elf
.iplt
;
14598 relocation
= (plt
->output_section
->vma
14599 + plt
->output_offset
14600 + ent
->plt
.offset
);
14602 unresolved_reloc
= FALSE
;
14610 /* Relocation value is TOC base. */
14611 relocation
= TOCstart
;
14612 if (r_symndx
== STN_UNDEF
)
14613 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14614 else if (unresolved_reloc
)
14616 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14617 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14619 unresolved_reloc
= TRUE
;
14622 /* TOC16 relocs. We want the offset relative to the TOC base,
14623 which is the address of the start of the TOC plus 0x8000.
14624 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14626 case R_PPC64_TOC16
:
14627 case R_PPC64_TOC16_LO
:
14628 case R_PPC64_TOC16_HI
:
14629 case R_PPC64_TOC16_DS
:
14630 case R_PPC64_TOC16_LO_DS
:
14631 case R_PPC64_TOC16_HA
:
14632 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14635 /* Relocate against the beginning of the section. */
14636 case R_PPC64_SECTOFF
:
14637 case R_PPC64_SECTOFF_LO
:
14638 case R_PPC64_SECTOFF_HI
:
14639 case R_PPC64_SECTOFF_DS
:
14640 case R_PPC64_SECTOFF_LO_DS
:
14641 case R_PPC64_SECTOFF_HA
:
14643 addend
-= sec
->output_section
->vma
;
14646 case R_PPC64_REL16
:
14647 case R_PPC64_REL16_LO
:
14648 case R_PPC64_REL16_HI
:
14649 case R_PPC64_REL16_HA
:
14650 case R_PPC64_REL16DX_HA
:
14653 case R_PPC64_REL14
:
14654 case R_PPC64_REL14_BRNTAKEN
:
14655 case R_PPC64_REL14_BRTAKEN
:
14656 case R_PPC64_REL24
:
14659 case R_PPC64_TPREL16
:
14660 case R_PPC64_TPREL16_LO
:
14661 case R_PPC64_TPREL16_HI
:
14662 case R_PPC64_TPREL16_HA
:
14663 case R_PPC64_TPREL16_DS
:
14664 case R_PPC64_TPREL16_LO_DS
:
14665 case R_PPC64_TPREL16_HIGH
:
14666 case R_PPC64_TPREL16_HIGHA
:
14667 case R_PPC64_TPREL16_HIGHER
:
14668 case R_PPC64_TPREL16_HIGHERA
:
14669 case R_PPC64_TPREL16_HIGHEST
:
14670 case R_PPC64_TPREL16_HIGHESTA
:
14672 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14673 && h
->elf
.dynindx
== -1)
14675 /* Make this relocation against an undefined weak symbol
14676 resolve to zero. This is really just a tweak, since
14677 code using weak externs ought to check that they are
14678 defined before using them. */
14679 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14681 insn
= bfd_get_32 (output_bfd
, p
);
14682 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14684 bfd_put_32 (output_bfd
, insn
, p
);
14687 if (htab
->elf
.tls_sec
!= NULL
)
14688 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14689 if (bfd_link_pic (info
))
14690 /* The TPREL16 relocs shouldn't really be used in shared
14691 libs as they will result in DT_TEXTREL being set, but
14692 support them anyway. */
14696 case R_PPC64_DTPREL16
:
14697 case R_PPC64_DTPREL16_LO
:
14698 case R_PPC64_DTPREL16_HI
:
14699 case R_PPC64_DTPREL16_HA
:
14700 case R_PPC64_DTPREL16_DS
:
14701 case R_PPC64_DTPREL16_LO_DS
:
14702 case R_PPC64_DTPREL16_HIGH
:
14703 case R_PPC64_DTPREL16_HIGHA
:
14704 case R_PPC64_DTPREL16_HIGHER
:
14705 case R_PPC64_DTPREL16_HIGHERA
:
14706 case R_PPC64_DTPREL16_HIGHEST
:
14707 case R_PPC64_DTPREL16_HIGHESTA
:
14708 if (htab
->elf
.tls_sec
!= NULL
)
14709 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14712 case R_PPC64_ADDR64_LOCAL
:
14713 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14718 case R_PPC64_DTPMOD64
:
14723 case R_PPC64_TPREL64
:
14724 if (htab
->elf
.tls_sec
!= NULL
)
14725 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14728 case R_PPC64_DTPREL64
:
14729 if (htab
->elf
.tls_sec
!= NULL
)
14730 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14733 /* Relocations that may need to be propagated if this is a
14735 case R_PPC64_REL30
:
14736 case R_PPC64_REL32
:
14737 case R_PPC64_REL64
:
14738 case R_PPC64_ADDR14
:
14739 case R_PPC64_ADDR14_BRNTAKEN
:
14740 case R_PPC64_ADDR14_BRTAKEN
:
14741 case R_PPC64_ADDR16
:
14742 case R_PPC64_ADDR16_DS
:
14743 case R_PPC64_ADDR16_HA
:
14744 case R_PPC64_ADDR16_HI
:
14745 case R_PPC64_ADDR16_HIGH
:
14746 case R_PPC64_ADDR16_HIGHA
:
14747 case R_PPC64_ADDR16_HIGHER
:
14748 case R_PPC64_ADDR16_HIGHERA
:
14749 case R_PPC64_ADDR16_HIGHEST
:
14750 case R_PPC64_ADDR16_HIGHESTA
:
14751 case R_PPC64_ADDR16_LO
:
14752 case R_PPC64_ADDR16_LO_DS
:
14753 case R_PPC64_ADDR24
:
14754 case R_PPC64_ADDR32
:
14755 case R_PPC64_ADDR64
:
14756 case R_PPC64_UADDR16
:
14757 case R_PPC64_UADDR32
:
14758 case R_PPC64_UADDR64
:
14760 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14763 if (NO_OPD_RELOCS
&& is_opd
)
14766 if (bfd_link_pic (info
)
14767 ? ((h
!= NULL
&& pc_dynrelocs (h
))
14768 || must_be_dyn_reloc (info
, r_type
))
14770 ? h
->dyn_relocs
!= NULL
14771 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14773 bfd_boolean skip
, relocate
;
14777 /* When generating a dynamic object, these relocations
14778 are copied into the output file to be resolved at run
14784 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14785 input_section
, rel
->r_offset
);
14786 if (out_off
== (bfd_vma
) -1)
14788 else if (out_off
== (bfd_vma
) -2)
14789 skip
= TRUE
, relocate
= TRUE
;
14790 out_off
+= (input_section
->output_section
->vma
14791 + input_section
->output_offset
);
14792 outrel
.r_offset
= out_off
;
14793 outrel
.r_addend
= rel
->r_addend
;
14795 /* Optimize unaligned reloc use. */
14796 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14797 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14798 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14799 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14800 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14801 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14802 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14803 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14804 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14807 memset (&outrel
, 0, sizeof outrel
);
14808 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14810 && r_type
!= R_PPC64_TOC
)
14812 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14813 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14817 /* This symbol is local, or marked to become local,
14818 or this is an opd section reloc which must point
14819 at a local function. */
14820 outrel
.r_addend
+= relocation
;
14821 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14823 if (is_opd
&& h
!= NULL
)
14825 /* Lie about opd entries. This case occurs
14826 when building shared libraries and we
14827 reference a function in another shared
14828 lib. The same thing happens for a weak
14829 definition in an application that's
14830 overridden by a strong definition in a
14831 shared lib. (I believe this is a generic
14832 bug in binutils handling of weak syms.)
14833 In these cases we won't use the opd
14834 entry in this lib. */
14835 unresolved_reloc
= FALSE
;
14838 && r_type
== R_PPC64_ADDR64
14840 ? h
->elf
.type
== STT_GNU_IFUNC
14841 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14842 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14845 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14847 /* We need to relocate .opd contents for ld.so.
14848 Prelink also wants simple and consistent rules
14849 for relocs. This make all RELATIVE relocs have
14850 *r_offset equal to r_addend. */
14859 ? h
->elf
.type
== STT_GNU_IFUNC
14860 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14862 info
->callbacks
->einfo
14863 (_("%P: %H: %s for indirect "
14864 "function `%T' unsupported\n"),
14865 input_bfd
, input_section
, rel
->r_offset
,
14866 ppc64_elf_howto_table
[r_type
]->name
,
14870 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14872 else if (sec
== NULL
|| sec
->owner
== NULL
)
14874 bfd_set_error (bfd_error_bad_value
);
14881 osec
= sec
->output_section
;
14882 indx
= elf_section_data (osec
)->dynindx
;
14886 if ((osec
->flags
& SEC_READONLY
) == 0
14887 && htab
->elf
.data_index_section
!= NULL
)
14888 osec
= htab
->elf
.data_index_section
;
14890 osec
= htab
->elf
.text_index_section
;
14891 indx
= elf_section_data (osec
)->dynindx
;
14893 BFD_ASSERT (indx
!= 0);
14895 /* We are turning this relocation into one
14896 against a section symbol, so subtract out
14897 the output section's address but not the
14898 offset of the input section in the output
14900 outrel
.r_addend
-= osec
->vma
;
14903 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14907 sreloc
= elf_section_data (input_section
)->sreloc
;
14909 ? h
->elf
.type
== STT_GNU_IFUNC
14910 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14911 sreloc
= htab
->elf
.irelplt
;
14912 if (sreloc
== NULL
)
14915 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14918 loc
= sreloc
->contents
;
14919 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14920 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14922 /* If this reloc is against an external symbol, it will
14923 be computed at runtime, so there's no need to do
14924 anything now. However, for the sake of prelink ensure
14925 that the section contents are a known value. */
14928 unresolved_reloc
= FALSE
;
14929 /* The value chosen here is quite arbitrary as ld.so
14930 ignores section contents except for the special
14931 case of .opd where the contents might be accessed
14932 before relocation. Choose zero, as that won't
14933 cause reloc overflow. */
14936 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14937 to improve backward compatibility with older
14939 if (r_type
== R_PPC64_ADDR64
)
14940 addend
= outrel
.r_addend
;
14941 /* Adjust pc_relative relocs to have zero in *r_offset. */
14942 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14943 addend
= (input_section
->output_section
->vma
14944 + input_section
->output_offset
14951 case R_PPC64_GLOB_DAT
:
14952 case R_PPC64_JMP_SLOT
:
14953 case R_PPC64_JMP_IREL
:
14954 case R_PPC64_RELATIVE
:
14955 /* We shouldn't ever see these dynamic relocs in relocatable
14957 /* Fall through. */
14959 case R_PPC64_PLTGOT16
:
14960 case R_PPC64_PLTGOT16_DS
:
14961 case R_PPC64_PLTGOT16_HA
:
14962 case R_PPC64_PLTGOT16_HI
:
14963 case R_PPC64_PLTGOT16_LO
:
14964 case R_PPC64_PLTGOT16_LO_DS
:
14965 case R_PPC64_PLTREL32
:
14966 case R_PPC64_PLTREL64
:
14967 /* These ones haven't been implemented yet. */
14969 info
->callbacks
->einfo
14970 (_("%P: %B: %s is not supported for `%T'\n"),
14972 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14974 bfd_set_error (bfd_error_invalid_operation
);
14979 /* Multi-instruction sequences that access the TOC can be
14980 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14981 to nop; addi rb,r2,x; */
14987 case R_PPC64_GOT_TLSLD16_HI
:
14988 case R_PPC64_GOT_TLSGD16_HI
:
14989 case R_PPC64_GOT_TPREL16_HI
:
14990 case R_PPC64_GOT_DTPREL16_HI
:
14991 case R_PPC64_GOT16_HI
:
14992 case R_PPC64_TOC16_HI
:
14993 /* These relocs would only be useful if building up an
14994 offset to later add to r2, perhaps in an indexed
14995 addressing mode instruction. Don't try to optimize.
14996 Unfortunately, the possibility of someone building up an
14997 offset like this or even with the HA relocs, means that
14998 we need to check the high insn when optimizing the low
15002 case R_PPC64_GOT_TLSLD16_HA
:
15003 case R_PPC64_GOT_TLSGD16_HA
:
15004 case R_PPC64_GOT_TPREL16_HA
:
15005 case R_PPC64_GOT_DTPREL16_HA
:
15006 case R_PPC64_GOT16_HA
:
15007 case R_PPC64_TOC16_HA
:
15008 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15009 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15011 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15012 bfd_put_32 (input_bfd
, NOP
, p
);
15016 case R_PPC64_GOT_TLSLD16_LO
:
15017 case R_PPC64_GOT_TLSGD16_LO
:
15018 case R_PPC64_GOT_TPREL16_LO_DS
:
15019 case R_PPC64_GOT_DTPREL16_LO_DS
:
15020 case R_PPC64_GOT16_LO
:
15021 case R_PPC64_GOT16_LO_DS
:
15022 case R_PPC64_TOC16_LO
:
15023 case R_PPC64_TOC16_LO_DS
:
15024 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15025 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15027 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15028 insn
= bfd_get_32 (input_bfd
, p
);
15029 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15031 /* Transform addic to addi when we change reg. */
15032 insn
&= ~((0x3f << 26) | (0x1f << 16));
15033 insn
|= (14u << 26) | (2 << 16);
15037 insn
&= ~(0x1f << 16);
15040 bfd_put_32 (input_bfd
, insn
, p
);
15045 /* Do any further special processing. */
15046 howto
= ppc64_elf_howto_table
[(int) r_type
];
15052 case R_PPC64_REL16_HA
:
15053 case R_PPC64_REL16DX_HA
:
15054 case R_PPC64_ADDR16_HA
:
15055 case R_PPC64_ADDR16_HIGHA
:
15056 case R_PPC64_ADDR16_HIGHERA
:
15057 case R_PPC64_ADDR16_HIGHESTA
:
15058 case R_PPC64_TOC16_HA
:
15059 case R_PPC64_SECTOFF_HA
:
15060 case R_PPC64_TPREL16_HA
:
15061 case R_PPC64_TPREL16_HIGHA
:
15062 case R_PPC64_TPREL16_HIGHERA
:
15063 case R_PPC64_TPREL16_HIGHESTA
:
15064 case R_PPC64_DTPREL16_HA
:
15065 case R_PPC64_DTPREL16_HIGHA
:
15066 case R_PPC64_DTPREL16_HIGHERA
:
15067 case R_PPC64_DTPREL16_HIGHESTA
:
15068 /* It's just possible that this symbol is a weak symbol
15069 that's not actually defined anywhere. In that case,
15070 'sec' would be NULL, and we should leave the symbol
15071 alone (it will be set to zero elsewhere in the link). */
15076 case R_PPC64_GOT16_HA
:
15077 case R_PPC64_PLTGOT16_HA
:
15078 case R_PPC64_PLT16_HA
:
15079 case R_PPC64_GOT_TLSGD16_HA
:
15080 case R_PPC64_GOT_TLSLD16_HA
:
15081 case R_PPC64_GOT_TPREL16_HA
:
15082 case R_PPC64_GOT_DTPREL16_HA
:
15083 /* Add 0x10000 if sign bit in 0:15 is set.
15084 Bits 0:15 are not used. */
15088 case R_PPC64_ADDR16_DS
:
15089 case R_PPC64_ADDR16_LO_DS
:
15090 case R_PPC64_GOT16_DS
:
15091 case R_PPC64_GOT16_LO_DS
:
15092 case R_PPC64_PLT16_LO_DS
:
15093 case R_PPC64_SECTOFF_DS
:
15094 case R_PPC64_SECTOFF_LO_DS
:
15095 case R_PPC64_TOC16_DS
:
15096 case R_PPC64_TOC16_LO_DS
:
15097 case R_PPC64_PLTGOT16_DS
:
15098 case R_PPC64_PLTGOT16_LO_DS
:
15099 case R_PPC64_GOT_TPREL16_DS
:
15100 case R_PPC64_GOT_TPREL16_LO_DS
:
15101 case R_PPC64_GOT_DTPREL16_DS
:
15102 case R_PPC64_GOT_DTPREL16_LO_DS
:
15103 case R_PPC64_TPREL16_DS
:
15104 case R_PPC64_TPREL16_LO_DS
:
15105 case R_PPC64_DTPREL16_DS
:
15106 case R_PPC64_DTPREL16_LO_DS
:
15107 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15109 /* If this reloc is against an lq, lxv, or stxv insn, then
15110 the value must be a multiple of 16. This is somewhat of
15111 a hack, but the "correct" way to do this by defining _DQ
15112 forms of all the _DS relocs bloats all reloc switches in
15113 this file. It doesn't make much sense to use these
15114 relocs in data, so testing the insn should be safe. */
15115 if ((insn
& (0x3f << 26)) == (56u << 26)
15116 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15118 relocation
+= addend
;
15119 addend
= insn
& (mask
^ 3);
15120 if ((relocation
& mask
) != 0)
15122 relocation
^= relocation
& mask
;
15123 info
->callbacks
->einfo
15124 (_("%P: %H: error: %s not a multiple of %u\n"),
15125 input_bfd
, input_section
, rel
->r_offset
,
15128 bfd_set_error (bfd_error_bad_value
);
15135 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15136 because such sections are not SEC_ALLOC and thus ld.so will
15137 not process them. */
15138 if (unresolved_reloc
15139 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15140 && h
->elf
.def_dynamic
)
15141 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15142 rel
->r_offset
) != (bfd_vma
) -1)
15144 info
->callbacks
->einfo
15145 (_("%P: %H: unresolvable %s against `%T'\n"),
15146 input_bfd
, input_section
, rel
->r_offset
,
15148 h
->elf
.root
.root
.string
);
15152 /* 16-bit fields in insns mostly have signed values, but a
15153 few insns have 16-bit unsigned values. Really, we should
15154 have different reloc types. */
15155 if (howto
->complain_on_overflow
!= complain_overflow_dont
15156 && howto
->dst_mask
== 0xffff
15157 && (input_section
->flags
& SEC_CODE
) != 0)
15159 enum complain_overflow complain
= complain_overflow_signed
;
15161 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15162 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15163 complain
= complain_overflow_bitfield
;
15164 else if (howto
->rightshift
== 0
15165 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15166 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15167 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15168 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15169 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15170 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15171 complain
= complain_overflow_unsigned
;
15172 if (howto
->complain_on_overflow
!= complain
)
15174 alt_howto
= *howto
;
15175 alt_howto
.complain_on_overflow
= complain
;
15176 howto
= &alt_howto
;
15180 if (r_type
== R_PPC64_REL16DX_HA
)
15182 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15183 if (rel
->r_offset
+ 4 > input_section
->size
)
15184 r
= bfd_reloc_outofrange
;
15187 relocation
+= addend
;
15188 relocation
-= (rel
->r_offset
15189 + input_section
->output_offset
15190 + input_section
->output_section
->vma
);
15191 relocation
= (bfd_signed_vma
) relocation
>> 16;
15192 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15194 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15195 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15197 if (relocation
+ 0x8000 > 0xffff)
15198 r
= bfd_reloc_overflow
;
15202 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15203 rel
->r_offset
, relocation
, addend
);
15205 if (r
!= bfd_reloc_ok
)
15207 char *more_info
= NULL
;
15208 const char *reloc_name
= howto
->name
;
15210 if (reloc_dest
!= DEST_NORMAL
)
15212 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15213 if (more_info
!= NULL
)
15215 strcpy (more_info
, reloc_name
);
15216 strcat (more_info
, (reloc_dest
== DEST_OPD
15217 ? " (OPD)" : " (stub)"));
15218 reloc_name
= more_info
;
15222 if (r
== bfd_reloc_overflow
)
15224 /* On code like "if (foo) foo();" don't report overflow
15225 on a branch to zero when foo is undefined. */
15227 && (reloc_dest
== DEST_STUB
15229 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15230 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15231 && is_branch_reloc (r_type
))))
15232 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15233 sym_name
, reloc_name
,
15235 input_bfd
, input_section
,
15240 info
->callbacks
->einfo
15241 (_("%P: %H: %s against `%T': error %d\n"),
15242 input_bfd
, input_section
, rel
->r_offset
,
15243 reloc_name
, sym_name
, (int) r
);
15246 if (more_info
!= NULL
)
15256 Elf_Internal_Shdr
*rel_hdr
;
15257 size_t deleted
= rel
- wrel
;
15259 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15260 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15261 if (rel_hdr
->sh_size
== 0)
15263 /* It is too late to remove an empty reloc section. Leave
15265 ??? What is wrong with an empty section??? */
15266 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15269 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15270 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15271 input_section
->reloc_count
-= deleted
;
15274 /* If we're emitting relocations, then shortly after this function
15275 returns, reloc offsets and addends for this section will be
15276 adjusted. Worse, reloc symbol indices will be for the output
15277 file rather than the input. Save a copy of the relocs for
15278 opd_entry_value. */
15279 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15282 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15283 rel
= bfd_alloc (input_bfd
, amt
);
15284 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15285 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15288 memcpy (rel
, relocs
, amt
);
15293 /* Adjust the value of any local symbols in opd sections. */
15296 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15297 const char *name ATTRIBUTE_UNUSED
,
15298 Elf_Internal_Sym
*elfsym
,
15299 asection
*input_sec
,
15300 struct elf_link_hash_entry
*h
)
15302 struct _opd_sec_data
*opd
;
15309 opd
= get_opd_info (input_sec
);
15310 if (opd
== NULL
|| opd
->adjust
== NULL
)
15313 value
= elfsym
->st_value
- input_sec
->output_offset
;
15314 if (!bfd_link_relocatable (info
))
15315 value
-= input_sec
->output_section
->vma
;
15317 adjust
= opd
->adjust
[OPD_NDX (value
)];
15321 elfsym
->st_value
+= adjust
;
15325 /* Finish up dynamic symbol handling. We set the contents of various
15326 dynamic sections here. */
15329 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15330 struct bfd_link_info
*info
,
15331 struct elf_link_hash_entry
*h
,
15332 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
15334 struct ppc_link_hash_table
*htab
;
15335 struct plt_entry
*ent
;
15336 Elf_Internal_Rela rela
;
15339 htab
= ppc_hash_table (info
);
15343 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15344 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15346 /* This symbol has an entry in the procedure linkage
15347 table. Set it up. */
15348 if (!htab
->elf
.dynamic_sections_created
15349 || h
->dynindx
== -1)
15351 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15353 && (h
->root
.type
== bfd_link_hash_defined
15354 || h
->root
.type
== bfd_link_hash_defweak
));
15355 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15356 + htab
->elf
.iplt
->output_offset
15357 + ent
->plt
.offset
);
15359 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15361 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15362 rela
.r_addend
= (h
->root
.u
.def
.value
15363 + h
->root
.u
.def
.section
->output_offset
15364 + h
->root
.u
.def
.section
->output_section
->vma
15366 loc
= (htab
->elf
.irelplt
->contents
15367 + (htab
->elf
.irelplt
->reloc_count
++
15368 * sizeof (Elf64_External_Rela
)));
15372 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15373 + htab
->elf
.splt
->output_offset
15374 + ent
->plt
.offset
);
15375 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15376 rela
.r_addend
= ent
->addend
;
15377 loc
= (htab
->elf
.srelplt
->contents
15378 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15379 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15381 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15383 if (!htab
->opd_abi
)
15385 if (!h
->def_regular
)
15387 /* Mark the symbol as undefined, rather than as
15388 defined in glink. Leave the value if there were
15389 any relocations where pointer equality matters
15390 (this is a clue for the dynamic linker, to make
15391 function pointer comparisons work between an
15392 application and shared library), otherwise set it
15394 sym
->st_shndx
= SHN_UNDEF
;
15395 if (!h
->pointer_equality_needed
)
15397 else if (!h
->ref_regular_nonweak
)
15399 /* This breaks function pointer comparisons, but
15400 that is better than breaking tests for a NULL
15401 function pointer. */
15410 /* This symbol needs a copy reloc. Set it up. */
15412 if (h
->dynindx
== -1
15413 || (h
->root
.type
!= bfd_link_hash_defined
15414 && h
->root
.type
!= bfd_link_hash_defweak
)
15415 || htab
->relbss
== NULL
)
15418 rela
.r_offset
= (h
->root
.u
.def
.value
15419 + h
->root
.u
.def
.section
->output_section
->vma
15420 + h
->root
.u
.def
.section
->output_offset
);
15421 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15423 loc
= htab
->relbss
->contents
;
15424 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15425 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15431 /* Used to decide how to sort relocs in an optimal manner for the
15432 dynamic linker, before writing them out. */
15434 static enum elf_reloc_type_class
15435 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15436 const asection
*rel_sec
,
15437 const Elf_Internal_Rela
*rela
)
15439 enum elf_ppc64_reloc_type r_type
;
15440 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15442 if (rel_sec
== htab
->elf
.irelplt
)
15443 return reloc_class_ifunc
;
15445 r_type
= ELF64_R_TYPE (rela
->r_info
);
15448 case R_PPC64_RELATIVE
:
15449 return reloc_class_relative
;
15450 case R_PPC64_JMP_SLOT
:
15451 return reloc_class_plt
;
15453 return reloc_class_copy
;
15455 return reloc_class_normal
;
15459 /* Finish up the dynamic sections. */
15462 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15463 struct bfd_link_info
*info
)
15465 struct ppc_link_hash_table
*htab
;
15469 htab
= ppc_hash_table (info
);
15473 dynobj
= htab
->elf
.dynobj
;
15474 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15476 if (htab
->elf
.dynamic_sections_created
)
15478 Elf64_External_Dyn
*dyncon
, *dynconend
;
15480 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15483 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15484 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15485 for (; dyncon
< dynconend
; dyncon
++)
15487 Elf_Internal_Dyn dyn
;
15490 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15497 case DT_PPC64_GLINK
:
15499 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15500 /* We stupidly defined DT_PPC64_GLINK to be the start
15501 of glink rather than the first entry point, which is
15502 what ld.so needs, and now have a bigger stub to
15503 support automatic multiple TOCs. */
15504 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15508 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15511 dyn
.d_un
.d_ptr
= s
->vma
;
15515 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15516 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15519 case DT_PPC64_OPDSZ
:
15520 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15523 dyn
.d_un
.d_val
= s
->size
;
15527 s
= htab
->elf
.splt
;
15528 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15532 s
= htab
->elf
.srelplt
;
15533 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15537 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15541 /* Don't count procedure linkage table relocs in the
15542 overall reloc count. */
15543 s
= htab
->elf
.srelplt
;
15546 dyn
.d_un
.d_val
-= s
->size
;
15550 /* We may not be using the standard ELF linker script.
15551 If .rela.plt is the first .rela section, we adjust
15552 DT_RELA to not include it. */
15553 s
= htab
->elf
.srelplt
;
15556 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
15558 dyn
.d_un
.d_ptr
+= s
->size
;
15562 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15566 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15568 /* Fill in the first entry in the global offset table.
15569 We use it to hold the link-time TOCbase. */
15570 bfd_put_64 (output_bfd
,
15571 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15572 htab
->elf
.sgot
->contents
);
15574 /* Set .got entry size. */
15575 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15578 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15580 /* Set .plt entry size. */
15581 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15582 = PLT_ENTRY_SIZE (htab
);
15585 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15586 brlt ourselves if emitrelocations. */
15587 if (htab
->brlt
!= NULL
15588 && htab
->brlt
->reloc_count
!= 0
15589 && !_bfd_elf_link_output_relocs (output_bfd
,
15591 elf_section_data (htab
->brlt
)->rela
.hdr
,
15592 elf_section_data (htab
->brlt
)->relocs
,
15596 if (htab
->glink
!= NULL
15597 && htab
->glink
->reloc_count
!= 0
15598 && !_bfd_elf_link_output_relocs (output_bfd
,
15600 elf_section_data (htab
->glink
)->rela
.hdr
,
15601 elf_section_data (htab
->glink
)->relocs
,
15605 if (htab
->glink_eh_frame
!= NULL
15606 && htab
->glink_eh_frame
->size
!= 0)
15610 asection
*stub_sec
;
15612 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15613 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15615 stub_sec
= stub_sec
->next
)
15616 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15622 /* Offset to stub section. */
15623 val
= (stub_sec
->output_section
->vma
15624 + stub_sec
->output_offset
);
15625 val
-= (htab
->glink_eh_frame
->output_section
->vma
15626 + htab
->glink_eh_frame
->output_offset
15627 + (p
- htab
->glink_eh_frame
->contents
));
15628 if (val
+ 0x80000000 > 0xffffffff)
15630 info
->callbacks
->einfo
15631 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15635 bfd_put_32 (dynobj
, val
, p
);
15637 /* stub section size. */
15639 /* Augmentation. */
15644 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15650 /* Offset to .glink. */
15651 val
= (htab
->glink
->output_section
->vma
15652 + htab
->glink
->output_offset
15654 val
-= (htab
->glink_eh_frame
->output_section
->vma
15655 + htab
->glink_eh_frame
->output_offset
15656 + (p
- htab
->glink_eh_frame
->contents
));
15657 if (val
+ 0x80000000 > 0xffffffff)
15659 info
->callbacks
->einfo
15660 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15661 htab
->glink
->name
);
15664 bfd_put_32 (dynobj
, val
, p
);
15668 /* Augmentation. */
15674 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15675 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15676 htab
->glink_eh_frame
,
15677 htab
->glink_eh_frame
->contents
))
15681 /* We need to handle writing out multiple GOT sections ourselves,
15682 since we didn't add them to DYNOBJ. We know dynobj is the first
15684 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15688 if (!is_ppc64_elf (dynobj
))
15691 s
= ppc64_elf_tdata (dynobj
)->got
;
15694 && s
->output_section
!= bfd_abs_section_ptr
15695 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15696 s
->contents
, s
->output_offset
,
15699 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15702 && s
->output_section
!= bfd_abs_section_ptr
15703 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15704 s
->contents
, s
->output_offset
,
15712 #include "elf64-target.h"
15714 /* FreeBSD support */
15716 #undef TARGET_LITTLE_SYM
15717 #undef TARGET_LITTLE_NAME
15719 #undef TARGET_BIG_SYM
15720 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15721 #undef TARGET_BIG_NAME
15722 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15725 #define ELF_OSABI ELFOSABI_FREEBSD
15728 #define elf64_bed elf64_powerpc_fbsd_bed
15730 #include "elf64-target.h"