1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_want_dynrelro 1
77 #define elf_backend_can_gc_sections 1
78 #define elf_backend_can_refcount 1
79 #define elf_backend_rela_normal 1
80 #define elf_backend_dtrel_excludes_plt 1
81 #define elf_backend_default_execstack 0
83 #define bfd_elf64_mkobject ppc64_elf_mkobject
84 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
85 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
86 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
87 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
88 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
89 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
90 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
91 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
92 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
94 #define elf_backend_object_p ppc64_elf_object_p
95 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
96 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
97 #define elf_backend_write_core_note ppc64_elf_write_core_note
98 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
99 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
100 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
101 #define elf_backend_check_directives ppc64_elf_before_check_relocs
102 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
103 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
104 #define elf_backend_check_relocs ppc64_elf_check_relocs
105 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
106 #define elf_backend_gc_keep ppc64_elf_gc_keep
107 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
108 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
109 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
110 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
111 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
112 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
113 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
114 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
115 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
116 #define elf_backend_action_discarded ppc64_elf_action_discarded
117 #define elf_backend_relocate_section ppc64_elf_relocate_section
118 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
119 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
120 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
121 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
122 #define elf_backend_special_sections ppc64_elf_special_sections
123 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
124 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
125 #define elf_backend_get_reloc_section bfd_get_section_by_name
127 /* The name of the dynamic interpreter. This is put in the .interp
129 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
131 /* The size in bytes of an entry in the procedure linkage table. */
132 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8)
135 /* The initial size of the plt reserved for the dynamic linker. */
136 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
138 /* Offsets to some stack save slots. */
140 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
141 /* This one is dodgy. ELFv2 does not have a linker word, so use the
142 CR save slot. Used only by optimised __tls_get_addr call stub,
143 relying on __tls_get_addr_opt not saving CR.. */
144 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
146 /* TOC base pointers offset from start of TOC. */
147 #define TOC_BASE_OFF 0x8000
148 /* TOC base alignment. */
149 #define TOC_BASE_ALIGN 256
151 /* Offset of tp and dtp pointers from start of TLS block. */
152 #define TP_OFFSET 0x7000
153 #define DTP_OFFSET 0x8000
155 /* .plt call stub instructions. The normal stub is like this, but
156 sometimes the .plt entry crosses a 64k boundary and we need to
157 insert an addi to adjust r11. */
158 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
159 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
160 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
161 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
162 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
163 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
164 #define BCTR 0x4e800420 /* bctr */
166 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
167 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
168 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
170 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
171 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
172 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
173 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
174 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
175 #define BNECTR 0x4ca20420 /* bnectr+ */
176 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
178 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
179 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
180 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
182 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
183 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
184 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
186 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
187 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
188 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
189 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
190 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
192 /* __glink_PLTresolve stub instructions. We enter with the index in R0. */
193 #define GLINK_PLTRESOLVE_SIZE(htab) \
194 (8u + (htab->opd_abi ? 11 * 4 : 14 * 4))
198 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
199 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
201 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
202 /* ld %2,(0b-1b)(%11) */
203 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
204 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
210 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
211 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
212 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
213 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
214 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
217 #define NOP 0x60000000
219 /* Some other nops. */
220 #define CROR_151515 0x4def7b82
221 #define CROR_313131 0x4ffffb82
223 /* .glink entries for the first 32k functions are two instructions. */
224 #define LI_R0_0 0x38000000 /* li %r0,0 */
225 #define B_DOT 0x48000000 /* b . */
227 /* After that, we need two instructions to load the index, followed by
229 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
230 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
232 /* Instructions used by the save and restore reg functions. */
233 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
234 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
235 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
236 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
237 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
238 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
239 #define LI_R12_0 0x39800000 /* li %r12,0 */
240 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
241 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
242 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
243 #define BLR 0x4e800020 /* blr */
245 /* Since .opd is an array of descriptors and each entry will end up
246 with identical R_PPC64_RELATIVE relocs, there is really no need to
247 propagate .opd relocs; The dynamic linker should be taught to
248 relocate .opd without reloc entries. */
249 #ifndef NO_OPD_RELOCS
250 #define NO_OPD_RELOCS 0
254 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
258 abiversion (bfd
*abfd
)
260 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
264 set_abiversion (bfd
*abfd
, int ver
)
266 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
267 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
270 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
272 /* Relocation HOWTO's. */
273 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
275 static reloc_howto_type ppc64_elf_howto_raw
[] =
277 /* This reloc does nothing. */
278 HOWTO (R_PPC64_NONE
, /* type */
280 3, /* size (0 = byte, 1 = short, 2 = long) */
282 FALSE
, /* pc_relative */
284 complain_overflow_dont
, /* complain_on_overflow */
285 bfd_elf_generic_reloc
, /* special_function */
286 "R_PPC64_NONE", /* name */
287 FALSE
, /* partial_inplace */
290 FALSE
), /* pcrel_offset */
292 /* A standard 32 bit relocation. */
293 HOWTO (R_PPC64_ADDR32
, /* type */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE
, /* pc_relative */
299 complain_overflow_bitfield
, /* complain_on_overflow */
300 bfd_elf_generic_reloc
, /* special_function */
301 "R_PPC64_ADDR32", /* name */
302 FALSE
, /* partial_inplace */
304 0xffffffff, /* dst_mask */
305 FALSE
), /* pcrel_offset */
307 /* An absolute 26 bit branch; the lower two bits must be zero.
308 FIXME: we don't check that, we just clear them. */
309 HOWTO (R_PPC64_ADDR24
, /* type */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
313 FALSE
, /* pc_relative */
315 complain_overflow_bitfield
, /* complain_on_overflow */
316 bfd_elf_generic_reloc
, /* special_function */
317 "R_PPC64_ADDR24", /* name */
318 FALSE
, /* partial_inplace */
320 0x03fffffc, /* dst_mask */
321 FALSE
), /* pcrel_offset */
323 /* A standard 16 bit relocation. */
324 HOWTO (R_PPC64_ADDR16
, /* type */
326 1, /* size (0 = byte, 1 = short, 2 = long) */
328 FALSE
, /* pc_relative */
330 complain_overflow_bitfield
, /* complain_on_overflow */
331 bfd_elf_generic_reloc
, /* special_function */
332 "R_PPC64_ADDR16", /* name */
333 FALSE
, /* partial_inplace */
335 0xffff, /* dst_mask */
336 FALSE
), /* pcrel_offset */
338 /* A 16 bit relocation without overflow. */
339 HOWTO (R_PPC64_ADDR16_LO
, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE
, /* pc_relative */
345 complain_overflow_dont
,/* complain_on_overflow */
346 bfd_elf_generic_reloc
, /* special_function */
347 "R_PPC64_ADDR16_LO", /* name */
348 FALSE
, /* partial_inplace */
350 0xffff, /* dst_mask */
351 FALSE
), /* pcrel_offset */
353 /* Bits 16-31 of an address. */
354 HOWTO (R_PPC64_ADDR16_HI
, /* type */
356 1, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE
, /* pc_relative */
360 complain_overflow_signed
, /* complain_on_overflow */
361 bfd_elf_generic_reloc
, /* special_function */
362 "R_PPC64_ADDR16_HI", /* name */
363 FALSE
, /* partial_inplace */
365 0xffff, /* dst_mask */
366 FALSE
), /* pcrel_offset */
368 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
369 bits, treated as a signed number, is negative. */
370 HOWTO (R_PPC64_ADDR16_HA
, /* type */
372 1, /* size (0 = byte, 1 = short, 2 = long) */
374 FALSE
, /* pc_relative */
376 complain_overflow_signed
, /* complain_on_overflow */
377 ppc64_elf_ha_reloc
, /* special_function */
378 "R_PPC64_ADDR16_HA", /* name */
379 FALSE
, /* partial_inplace */
381 0xffff, /* dst_mask */
382 FALSE
), /* pcrel_offset */
384 /* An absolute 16 bit branch; the lower two bits must be zero.
385 FIXME: we don't check that, we just clear them. */
386 HOWTO (R_PPC64_ADDR14
, /* type */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
390 FALSE
, /* pc_relative */
392 complain_overflow_signed
, /* complain_on_overflow */
393 ppc64_elf_branch_reloc
, /* special_function */
394 "R_PPC64_ADDR14", /* name */
395 FALSE
, /* partial_inplace */
397 0x0000fffc, /* dst_mask */
398 FALSE
), /* pcrel_offset */
400 /* An absolute 16 bit branch, for which bit 10 should be set to
401 indicate that the branch is expected to be taken. The lower two
402 bits must be zero. */
403 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE
, /* pc_relative */
409 complain_overflow_signed
, /* complain_on_overflow */
410 ppc64_elf_brtaken_reloc
, /* special_function */
411 "R_PPC64_ADDR14_BRTAKEN",/* name */
412 FALSE
, /* partial_inplace */
414 0x0000fffc, /* dst_mask */
415 FALSE
), /* pcrel_offset */
417 /* An absolute 16 bit branch, for which bit 10 should be set to
418 indicate that the branch is not expected to be taken. The lower
419 two bits must be zero. */
420 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
422 2, /* size (0 = byte, 1 = short, 2 = long) */
424 FALSE
, /* pc_relative */
426 complain_overflow_signed
, /* complain_on_overflow */
427 ppc64_elf_brtaken_reloc
, /* special_function */
428 "R_PPC64_ADDR14_BRNTAKEN",/* name */
429 FALSE
, /* partial_inplace */
431 0x0000fffc, /* dst_mask */
432 FALSE
), /* pcrel_offset */
434 /* A relative 26 bit branch; the lower two bits must be zero. */
435 HOWTO (R_PPC64_REL24
, /* type */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
439 TRUE
, /* pc_relative */
441 complain_overflow_signed
, /* complain_on_overflow */
442 ppc64_elf_branch_reloc
, /* special_function */
443 "R_PPC64_REL24", /* name */
444 FALSE
, /* partial_inplace */
446 0x03fffffc, /* dst_mask */
447 TRUE
), /* pcrel_offset */
449 /* A relative 16 bit branch; the lower two bits must be zero. */
450 HOWTO (R_PPC64_REL14
, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 TRUE
, /* pc_relative */
456 complain_overflow_signed
, /* complain_on_overflow */
457 ppc64_elf_branch_reloc
, /* special_function */
458 "R_PPC64_REL14", /* name */
459 FALSE
, /* partial_inplace */
461 0x0000fffc, /* dst_mask */
462 TRUE
), /* pcrel_offset */
464 /* A relative 16 bit branch. Bit 10 should be set to indicate that
465 the branch is expected to be taken. The lower two bits must be
467 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
471 TRUE
, /* pc_relative */
473 complain_overflow_signed
, /* complain_on_overflow */
474 ppc64_elf_brtaken_reloc
, /* special_function */
475 "R_PPC64_REL14_BRTAKEN", /* name */
476 FALSE
, /* partial_inplace */
478 0x0000fffc, /* dst_mask */
479 TRUE
), /* pcrel_offset */
481 /* A relative 16 bit branch. Bit 10 should be set to indicate that
482 the branch is not expected to be taken. The lower two bits must
484 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 TRUE
, /* pc_relative */
490 complain_overflow_signed
, /* complain_on_overflow */
491 ppc64_elf_brtaken_reloc
, /* special_function */
492 "R_PPC64_REL14_BRNTAKEN",/* name */
493 FALSE
, /* partial_inplace */
495 0x0000fffc, /* dst_mask */
496 TRUE
), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
500 HOWTO (R_PPC64_GOT16
, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_signed
, /* complain_on_overflow */
507 ppc64_elf_unhandled_reloc
, /* special_function */
508 "R_PPC64_GOT16", /* name */
509 FALSE
, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
514 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
516 HOWTO (R_PPC64_GOT16_LO
, /* type */
518 1, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_dont
, /* complain_on_overflow */
523 ppc64_elf_unhandled_reloc
, /* special_function */
524 "R_PPC64_GOT16_LO", /* name */
525 FALSE
, /* partial_inplace */
527 0xffff, /* dst_mask */
528 FALSE
), /* pcrel_offset */
530 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
532 HOWTO (R_PPC64_GOT16_HI
, /* type */
534 1, /* size (0 = byte, 1 = short, 2 = long) */
536 FALSE
, /* pc_relative */
538 complain_overflow_signed
,/* complain_on_overflow */
539 ppc64_elf_unhandled_reloc
, /* special_function */
540 "R_PPC64_GOT16_HI", /* name */
541 FALSE
, /* partial_inplace */
543 0xffff, /* dst_mask */
544 FALSE
), /* pcrel_offset */
546 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
548 HOWTO (R_PPC64_GOT16_HA
, /* type */
550 1, /* size (0 = byte, 1 = short, 2 = long) */
552 FALSE
, /* pc_relative */
554 complain_overflow_signed
,/* complain_on_overflow */
555 ppc64_elf_unhandled_reloc
, /* special_function */
556 "R_PPC64_GOT16_HA", /* name */
557 FALSE
, /* partial_inplace */
559 0xffff, /* dst_mask */
560 FALSE
), /* pcrel_offset */
562 /* This is used only by the dynamic linker. The symbol should exist
563 both in the object being run and in some shared library. The
564 dynamic linker copies the data addressed by the symbol from the
565 shared library into the object, because the object being
566 run has to have the data at some particular address. */
567 HOWTO (R_PPC64_COPY
, /* type */
569 0, /* this one is variable size */
571 FALSE
, /* pc_relative */
573 complain_overflow_dont
, /* complain_on_overflow */
574 ppc64_elf_unhandled_reloc
, /* special_function */
575 "R_PPC64_COPY", /* name */
576 FALSE
, /* partial_inplace */
579 FALSE
), /* pcrel_offset */
581 /* Like R_PPC64_ADDR64, but used when setting global offset table
583 HOWTO (R_PPC64_GLOB_DAT
, /* type */
585 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
587 FALSE
, /* pc_relative */
589 complain_overflow_dont
, /* complain_on_overflow */
590 ppc64_elf_unhandled_reloc
, /* special_function */
591 "R_PPC64_GLOB_DAT", /* name */
592 FALSE
, /* partial_inplace */
594 ONES (64), /* dst_mask */
595 FALSE
), /* pcrel_offset */
597 /* Created by the link editor. Marks a procedure linkage table
598 entry for a symbol. */
599 HOWTO (R_PPC64_JMP_SLOT
, /* type */
601 0, /* size (0 = byte, 1 = short, 2 = long) */
603 FALSE
, /* pc_relative */
605 complain_overflow_dont
, /* complain_on_overflow */
606 ppc64_elf_unhandled_reloc
, /* special_function */
607 "R_PPC64_JMP_SLOT", /* name */
608 FALSE
, /* partial_inplace */
611 FALSE
), /* pcrel_offset */
613 /* Used only by the dynamic linker. When the object is run, this
614 doubleword64 is set to the load address of the object, plus the
616 HOWTO (R_PPC64_RELATIVE
, /* type */
618 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
620 FALSE
, /* pc_relative */
622 complain_overflow_dont
, /* complain_on_overflow */
623 bfd_elf_generic_reloc
, /* special_function */
624 "R_PPC64_RELATIVE", /* name */
625 FALSE
, /* partial_inplace */
627 ONES (64), /* dst_mask */
628 FALSE
), /* pcrel_offset */
630 /* Like R_PPC64_ADDR32, but may be unaligned. */
631 HOWTO (R_PPC64_UADDR32
, /* type */
633 2, /* size (0 = byte, 1 = short, 2 = long) */
635 FALSE
, /* pc_relative */
637 complain_overflow_bitfield
, /* complain_on_overflow */
638 bfd_elf_generic_reloc
, /* special_function */
639 "R_PPC64_UADDR32", /* name */
640 FALSE
, /* partial_inplace */
642 0xffffffff, /* dst_mask */
643 FALSE
), /* pcrel_offset */
645 /* Like R_PPC64_ADDR16, but may be unaligned. */
646 HOWTO (R_PPC64_UADDR16
, /* type */
648 1, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE
, /* pc_relative */
652 complain_overflow_bitfield
, /* complain_on_overflow */
653 bfd_elf_generic_reloc
, /* special_function */
654 "R_PPC64_UADDR16", /* name */
655 FALSE
, /* partial_inplace */
657 0xffff, /* dst_mask */
658 FALSE
), /* pcrel_offset */
660 /* 32-bit PC relative. */
661 HOWTO (R_PPC64_REL32
, /* type */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
665 TRUE
, /* pc_relative */
667 complain_overflow_signed
, /* complain_on_overflow */
668 bfd_elf_generic_reloc
, /* special_function */
669 "R_PPC64_REL32", /* name */
670 FALSE
, /* partial_inplace */
672 0xffffffff, /* dst_mask */
673 TRUE
), /* pcrel_offset */
675 /* 32-bit relocation to the symbol's procedure linkage table. */
676 HOWTO (R_PPC64_PLT32
, /* type */
678 2, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE
, /* pc_relative */
682 complain_overflow_bitfield
, /* complain_on_overflow */
683 ppc64_elf_unhandled_reloc
, /* special_function */
684 "R_PPC64_PLT32", /* name */
685 FALSE
, /* partial_inplace */
687 0xffffffff, /* dst_mask */
688 FALSE
), /* pcrel_offset */
690 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
691 FIXME: R_PPC64_PLTREL32 not supported. */
692 HOWTO (R_PPC64_PLTREL32
, /* type */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
696 TRUE
, /* pc_relative */
698 complain_overflow_signed
, /* complain_on_overflow */
699 ppc64_elf_unhandled_reloc
, /* special_function */
700 "R_PPC64_PLTREL32", /* name */
701 FALSE
, /* partial_inplace */
703 0xffffffff, /* dst_mask */
704 TRUE
), /* pcrel_offset */
706 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
708 HOWTO (R_PPC64_PLT16_LO
, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE
, /* pc_relative */
714 complain_overflow_dont
, /* complain_on_overflow */
715 ppc64_elf_unhandled_reloc
, /* special_function */
716 "R_PPC64_PLT16_LO", /* name */
717 FALSE
, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE
), /* pcrel_offset */
722 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
724 HOWTO (R_PPC64_PLT16_HI
, /* type */
726 1, /* size (0 = byte, 1 = short, 2 = long) */
728 FALSE
, /* pc_relative */
730 complain_overflow_signed
, /* complain_on_overflow */
731 ppc64_elf_unhandled_reloc
, /* special_function */
732 "R_PPC64_PLT16_HI", /* name */
733 FALSE
, /* partial_inplace */
735 0xffff, /* dst_mask */
736 FALSE
), /* pcrel_offset */
738 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
740 HOWTO (R_PPC64_PLT16_HA
, /* type */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
744 FALSE
, /* pc_relative */
746 complain_overflow_signed
, /* complain_on_overflow */
747 ppc64_elf_unhandled_reloc
, /* special_function */
748 "R_PPC64_PLT16_HA", /* name */
749 FALSE
, /* partial_inplace */
751 0xffff, /* dst_mask */
752 FALSE
), /* pcrel_offset */
754 /* 16-bit section relative relocation. */
755 HOWTO (R_PPC64_SECTOFF
, /* type */
757 1, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_signed
, /* complain_on_overflow */
762 ppc64_elf_sectoff_reloc
, /* special_function */
763 "R_PPC64_SECTOFF", /* name */
764 FALSE
, /* partial_inplace */
766 0xffff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 /* Like R_PPC64_SECTOFF, but no overflow warning. */
770 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
772 1, /* size (0 = byte, 1 = short, 2 = long) */
774 FALSE
, /* pc_relative */
776 complain_overflow_dont
, /* complain_on_overflow */
777 ppc64_elf_sectoff_reloc
, /* special_function */
778 "R_PPC64_SECTOFF_LO", /* name */
779 FALSE
, /* partial_inplace */
781 0xffff, /* dst_mask */
782 FALSE
), /* pcrel_offset */
784 /* 16-bit upper half section relative relocation. */
785 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
787 1, /* size (0 = byte, 1 = short, 2 = long) */
789 FALSE
, /* pc_relative */
791 complain_overflow_signed
, /* complain_on_overflow */
792 ppc64_elf_sectoff_reloc
, /* special_function */
793 "R_PPC64_SECTOFF_HI", /* name */
794 FALSE
, /* partial_inplace */
796 0xffff, /* dst_mask */
797 FALSE
), /* pcrel_offset */
799 /* 16-bit upper half adjusted section relative relocation. */
800 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE
, /* pc_relative */
806 complain_overflow_signed
, /* complain_on_overflow */
807 ppc64_elf_sectoff_ha_reloc
, /* special_function */
808 "R_PPC64_SECTOFF_HA", /* name */
809 FALSE
, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE
), /* pcrel_offset */
814 /* Like R_PPC64_REL24 without touching the two least significant bits. */
815 HOWTO (R_PPC64_REL30
, /* type */
817 2, /* size (0 = byte, 1 = short, 2 = long) */
819 TRUE
, /* pc_relative */
821 complain_overflow_dont
, /* complain_on_overflow */
822 bfd_elf_generic_reloc
, /* special_function */
823 "R_PPC64_REL30", /* name */
824 FALSE
, /* partial_inplace */
826 0xfffffffc, /* dst_mask */
827 TRUE
), /* pcrel_offset */
829 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
831 /* A standard 64-bit relocation. */
832 HOWTO (R_PPC64_ADDR64
, /* type */
834 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
836 FALSE
, /* pc_relative */
838 complain_overflow_dont
, /* complain_on_overflow */
839 bfd_elf_generic_reloc
, /* special_function */
840 "R_PPC64_ADDR64", /* name */
841 FALSE
, /* partial_inplace */
843 ONES (64), /* dst_mask */
844 FALSE
), /* pcrel_offset */
846 /* The bits 32-47 of an address. */
847 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE
, /* pc_relative */
853 complain_overflow_dont
, /* complain_on_overflow */
854 bfd_elf_generic_reloc
, /* special_function */
855 "R_PPC64_ADDR16_HIGHER", /* name */
856 FALSE
, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE
), /* pcrel_offset */
861 /* The bits 32-47 of an address, plus 1 if the contents of the low
862 16 bits, treated as a signed number, is negative. */
863 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
865 1, /* size (0 = byte, 1 = short, 2 = long) */
867 FALSE
, /* pc_relative */
869 complain_overflow_dont
, /* complain_on_overflow */
870 ppc64_elf_ha_reloc
, /* special_function */
871 "R_PPC64_ADDR16_HIGHERA", /* name */
872 FALSE
, /* partial_inplace */
874 0xffff, /* dst_mask */
875 FALSE
), /* pcrel_offset */
877 /* The bits 48-63 of an address. */
878 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
880 1, /* size (0 = byte, 1 = short, 2 = long) */
882 FALSE
, /* pc_relative */
884 complain_overflow_dont
, /* complain_on_overflow */
885 bfd_elf_generic_reloc
, /* special_function */
886 "R_PPC64_ADDR16_HIGHEST", /* name */
887 FALSE
, /* partial_inplace */
889 0xffff, /* dst_mask */
890 FALSE
), /* pcrel_offset */
892 /* The bits 48-63 of an address, plus 1 if the contents of the low
893 16 bits, treated as a signed number, is negative. */
894 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE
, /* pc_relative */
900 complain_overflow_dont
, /* complain_on_overflow */
901 ppc64_elf_ha_reloc
, /* special_function */
902 "R_PPC64_ADDR16_HIGHESTA", /* name */
903 FALSE
, /* partial_inplace */
905 0xffff, /* dst_mask */
906 FALSE
), /* pcrel_offset */
908 /* Like ADDR64, but may be unaligned. */
909 HOWTO (R_PPC64_UADDR64
, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 FALSE
, /* pc_relative */
915 complain_overflow_dont
, /* complain_on_overflow */
916 bfd_elf_generic_reloc
, /* special_function */
917 "R_PPC64_UADDR64", /* name */
918 FALSE
, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 FALSE
), /* pcrel_offset */
923 /* 64-bit relative relocation. */
924 HOWTO (R_PPC64_REL64
, /* type */
926 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
928 TRUE
, /* pc_relative */
930 complain_overflow_dont
, /* complain_on_overflow */
931 bfd_elf_generic_reloc
, /* special_function */
932 "R_PPC64_REL64", /* name */
933 FALSE
, /* partial_inplace */
935 ONES (64), /* dst_mask */
936 TRUE
), /* pcrel_offset */
938 /* 64-bit relocation to the symbol's procedure linkage table. */
939 HOWTO (R_PPC64_PLT64
, /* type */
941 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
943 FALSE
, /* pc_relative */
945 complain_overflow_dont
, /* complain_on_overflow */
946 ppc64_elf_unhandled_reloc
, /* special_function */
947 "R_PPC64_PLT64", /* name */
948 FALSE
, /* partial_inplace */
950 ONES (64), /* dst_mask */
951 FALSE
), /* pcrel_offset */
953 /* 64-bit PC relative relocation to the symbol's procedure linkage
955 /* FIXME: R_PPC64_PLTREL64 not supported. */
956 HOWTO (R_PPC64_PLTREL64
, /* type */
958 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
960 TRUE
, /* pc_relative */
962 complain_overflow_dont
, /* complain_on_overflow */
963 ppc64_elf_unhandled_reloc
, /* special_function */
964 "R_PPC64_PLTREL64", /* name */
965 FALSE
, /* partial_inplace */
967 ONES (64), /* dst_mask */
968 TRUE
), /* pcrel_offset */
970 /* 16 bit TOC-relative relocation. */
972 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
973 HOWTO (R_PPC64_TOC16
, /* type */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 FALSE
, /* pc_relative */
979 complain_overflow_signed
, /* complain_on_overflow */
980 ppc64_elf_toc_reloc
, /* special_function */
981 "R_PPC64_TOC16", /* name */
982 FALSE
, /* partial_inplace */
984 0xffff, /* dst_mask */
985 FALSE
), /* pcrel_offset */
987 /* 16 bit TOC-relative relocation without overflow. */
989 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
990 HOWTO (R_PPC64_TOC16_LO
, /* type */
992 1, /* size (0 = byte, 1 = short, 2 = long) */
994 FALSE
, /* pc_relative */
996 complain_overflow_dont
, /* complain_on_overflow */
997 ppc64_elf_toc_reloc
, /* special_function */
998 "R_PPC64_TOC16_LO", /* name */
999 FALSE
, /* partial_inplace */
1001 0xffff, /* dst_mask */
1002 FALSE
), /* pcrel_offset */
1004 /* 16 bit TOC-relative relocation, high 16 bits. */
1006 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HI
, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE
, /* pc_relative */
1013 complain_overflow_signed
, /* complain_on_overflow */
1014 ppc64_elf_toc_reloc
, /* special_function */
1015 "R_PPC64_TOC16_HI", /* name */
1016 FALSE
, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE
), /* pcrel_offset */
1021 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1022 contents of the low 16 bits, treated as a signed number, is
1025 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1026 HOWTO (R_PPC64_TOC16_HA
, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_signed
, /* complain_on_overflow */
1033 ppc64_elf_toc_ha_reloc
, /* special_function */
1034 "R_PPC64_TOC16_HA", /* name */
1035 FALSE
, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1042 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1043 HOWTO (R_PPC64_TOC
, /* type */
1045 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1047 FALSE
, /* pc_relative */
1049 complain_overflow_dont
, /* complain_on_overflow */
1050 ppc64_elf_toc64_reloc
, /* special_function */
1051 "R_PPC64_TOC", /* name */
1052 FALSE
, /* partial_inplace */
1054 ONES (64), /* dst_mask */
1055 FALSE
), /* pcrel_offset */
1057 /* Like R_PPC64_GOT16, but also informs the link editor that the
1058 value to relocate may (!) refer to a PLT entry which the link
1059 editor (a) may replace with the symbol value. If the link editor
1060 is unable to fully resolve the symbol, it may (b) create a PLT
1061 entry and store the address to the new PLT entry in the GOT.
1062 This permits lazy resolution of function symbols at run time.
1063 The link editor may also skip all of this and just (c) emit a
1064 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1065 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1066 HOWTO (R_PPC64_PLTGOT16
, /* type */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE
, /* pc_relative */
1072 complain_overflow_signed
, /* complain_on_overflow */
1073 ppc64_elf_unhandled_reloc
, /* special_function */
1074 "R_PPC64_PLTGOT16", /* name */
1075 FALSE
, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE
), /* pcrel_offset */
1080 /* Like R_PPC64_PLTGOT16, but without overflow. */
1081 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1082 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1084 1, /* size (0 = byte, 1 = short, 2 = long) */
1086 FALSE
, /* pc_relative */
1088 complain_overflow_dont
, /* complain_on_overflow */
1089 ppc64_elf_unhandled_reloc
, /* special_function */
1090 "R_PPC64_PLTGOT16_LO", /* name */
1091 FALSE
, /* partial_inplace */
1093 0xffff, /* dst_mask */
1094 FALSE
), /* pcrel_offset */
1096 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1097 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1098 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1099 16, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 FALSE
, /* pc_relative */
1104 complain_overflow_signed
, /* complain_on_overflow */
1105 ppc64_elf_unhandled_reloc
, /* special_function */
1106 "R_PPC64_PLTGOT16_HI", /* name */
1107 FALSE
, /* partial_inplace */
1109 0xffff, /* dst_mask */
1110 FALSE
), /* pcrel_offset */
1112 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1113 1 if the contents of the low 16 bits, treated as a signed number,
1115 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1116 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1117 16, /* rightshift */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_signed
, /* complain_on_overflow */
1123 ppc64_elf_unhandled_reloc
, /* special_function */
1124 "R_PPC64_PLTGOT16_HA", /* name */
1125 FALSE
, /* partial_inplace */
1127 0xffff, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_signed
, /* complain_on_overflow */
1138 bfd_elf_generic_reloc
, /* special_function */
1139 "R_PPC64_ADDR16_DS", /* name */
1140 FALSE
, /* partial_inplace */
1142 0xfffc, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_dont
,/* complain_on_overflow */
1153 bfd_elf_generic_reloc
, /* special_function */
1154 "R_PPC64_ADDR16_LO_DS",/* name */
1155 FALSE
, /* partial_inplace */
1157 0xfffc, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_GOT16_DS
, /* type */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_signed
, /* complain_on_overflow */
1168 ppc64_elf_unhandled_reloc
, /* special_function */
1169 "R_PPC64_GOT16_DS", /* name */
1170 FALSE
, /* partial_inplace */
1172 0xfffc, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1176 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1178 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 FALSE
, /* pc_relative */
1182 complain_overflow_dont
, /* complain_on_overflow */
1183 ppc64_elf_unhandled_reloc
, /* special_function */
1184 "R_PPC64_GOT16_LO_DS", /* name */
1185 FALSE
, /* partial_inplace */
1187 0xfffc, /* dst_mask */
1188 FALSE
), /* pcrel_offset */
1190 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1191 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 FALSE
, /* pc_relative */
1197 complain_overflow_dont
, /* complain_on_overflow */
1198 ppc64_elf_unhandled_reloc
, /* special_function */
1199 "R_PPC64_PLT16_LO_DS", /* name */
1200 FALSE
, /* partial_inplace */
1202 0xfffc, /* dst_mask */
1203 FALSE
), /* pcrel_offset */
1205 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1206 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1208 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 FALSE
, /* pc_relative */
1212 complain_overflow_signed
, /* complain_on_overflow */
1213 ppc64_elf_sectoff_reloc
, /* special_function */
1214 "R_PPC64_SECTOFF_DS", /* name */
1215 FALSE
, /* partial_inplace */
1217 0xfffc, /* dst_mask */
1218 FALSE
), /* pcrel_offset */
1220 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1221 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1223 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 FALSE
, /* pc_relative */
1227 complain_overflow_dont
, /* complain_on_overflow */
1228 ppc64_elf_sectoff_reloc
, /* special_function */
1229 "R_PPC64_SECTOFF_LO_DS",/* name */
1230 FALSE
, /* partial_inplace */
1232 0xfffc, /* dst_mask */
1233 FALSE
), /* pcrel_offset */
1235 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1236 HOWTO (R_PPC64_TOC16_DS
, /* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE
, /* pc_relative */
1242 complain_overflow_signed
, /* complain_on_overflow */
1243 ppc64_elf_toc_reloc
, /* special_function */
1244 "R_PPC64_TOC16_DS", /* name */
1245 FALSE
, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE
), /* pcrel_offset */
1250 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1251 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1253 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE
, /* pc_relative */
1257 complain_overflow_dont
, /* complain_on_overflow */
1258 ppc64_elf_toc_reloc
, /* special_function */
1259 "R_PPC64_TOC16_LO_DS", /* name */
1260 FALSE
, /* partial_inplace */
1262 0xfffc, /* dst_mask */
1263 FALSE
), /* pcrel_offset */
1265 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1266 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1267 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1269 1, /* size (0 = byte, 1 = short, 2 = long) */
1271 FALSE
, /* pc_relative */
1273 complain_overflow_signed
, /* complain_on_overflow */
1274 ppc64_elf_unhandled_reloc
, /* special_function */
1275 "R_PPC64_PLTGOT16_DS", /* name */
1276 FALSE
, /* partial_inplace */
1278 0xfffc, /* dst_mask */
1279 FALSE
), /* pcrel_offset */
1281 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1282 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1283 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE
, /* pc_relative */
1289 complain_overflow_dont
, /* complain_on_overflow */
1290 ppc64_elf_unhandled_reloc
, /* special_function */
1291 "R_PPC64_PLTGOT16_LO_DS",/* name */
1292 FALSE
, /* partial_inplace */
1294 0xfffc, /* dst_mask */
1295 FALSE
), /* pcrel_offset */
1297 /* Marker relocs for TLS. */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE
, /* pc_relative */
1304 complain_overflow_dont
, /* complain_on_overflow */
1305 bfd_elf_generic_reloc
, /* special_function */
1306 "R_PPC64_TLS", /* name */
1307 FALSE
, /* partial_inplace */
1310 FALSE
), /* pcrel_offset */
1312 HOWTO (R_PPC64_TLSGD
,
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE
, /* pc_relative */
1318 complain_overflow_dont
, /* complain_on_overflow */
1319 bfd_elf_generic_reloc
, /* special_function */
1320 "R_PPC64_TLSGD", /* name */
1321 FALSE
, /* partial_inplace */
1324 FALSE
), /* pcrel_offset */
1326 HOWTO (R_PPC64_TLSLD
,
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_dont
, /* complain_on_overflow */
1333 bfd_elf_generic_reloc
, /* special_function */
1334 "R_PPC64_TLSLD", /* name */
1335 FALSE
, /* partial_inplace */
1338 FALSE
), /* pcrel_offset */
1340 /* Marker reloc for optimizing r2 save in prologue rather than on
1341 each plt call stub. */
1342 HOWTO (R_PPC64_TOCSAVE
,
1344 2, /* size (0 = byte, 1 = short, 2 = long) */
1346 FALSE
, /* pc_relative */
1348 complain_overflow_dont
, /* complain_on_overflow */
1349 bfd_elf_generic_reloc
, /* special_function */
1350 "R_PPC64_TOCSAVE", /* name */
1351 FALSE
, /* partial_inplace */
1354 FALSE
), /* pcrel_offset */
1356 /* Marker relocs on inline plt call instructions. */
1357 HOWTO (R_PPC64_PLTSEQ
,
1359 2, /* size (0 = byte, 1 = short, 2 = long) */
1361 FALSE
, /* pc_relative */
1363 complain_overflow_dont
, /* complain_on_overflow */
1364 bfd_elf_generic_reloc
, /* special_function */
1365 "R_PPC64_PLTSEQ", /* name */
1366 FALSE
, /* partial_inplace */
1369 FALSE
), /* pcrel_offset */
1371 HOWTO (R_PPC64_PLTCALL
,
1373 2, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
, /* complain_on_overflow */
1378 bfd_elf_generic_reloc
, /* special_function */
1379 "R_PPC64_PLTCALL", /* name */
1380 FALSE
, /* partial_inplace */
1383 FALSE
), /* pcrel_offset */
1385 /* Computes the load module index of the load module that contains the
1386 definition of its TLS sym. */
1387 HOWTO (R_PPC64_DTPMOD64
,
1389 4, /* size (0 = byte, 1 = short, 2 = long) */
1391 FALSE
, /* pc_relative */
1393 complain_overflow_dont
, /* complain_on_overflow */
1394 ppc64_elf_unhandled_reloc
, /* special_function */
1395 "R_PPC64_DTPMOD64", /* name */
1396 FALSE
, /* partial_inplace */
1398 ONES (64), /* dst_mask */
1399 FALSE
), /* pcrel_offset */
1401 /* Computes a dtv-relative displacement, the difference between the value
1402 of sym+add and the base address of the thread-local storage block that
1403 contains the definition of sym, minus 0x8000. */
1404 HOWTO (R_PPC64_DTPREL64
,
1406 4, /* size (0 = byte, 1 = short, 2 = long) */
1408 FALSE
, /* pc_relative */
1410 complain_overflow_dont
, /* complain_on_overflow */
1411 ppc64_elf_unhandled_reloc
, /* special_function */
1412 "R_PPC64_DTPREL64", /* name */
1413 FALSE
, /* partial_inplace */
1415 ONES (64), /* dst_mask */
1416 FALSE
), /* pcrel_offset */
1418 /* A 16 bit dtprel reloc. */
1419 HOWTO (R_PPC64_DTPREL16
,
1421 1, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE
, /* pc_relative */
1425 complain_overflow_signed
, /* complain_on_overflow */
1426 ppc64_elf_unhandled_reloc
, /* special_function */
1427 "R_PPC64_DTPREL16", /* name */
1428 FALSE
, /* partial_inplace */
1430 0xffff, /* dst_mask */
1431 FALSE
), /* pcrel_offset */
1433 /* Like DTPREL16, but no overflow. */
1434 HOWTO (R_PPC64_DTPREL16_LO
,
1436 1, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE
, /* pc_relative */
1440 complain_overflow_dont
, /* complain_on_overflow */
1441 ppc64_elf_unhandled_reloc
, /* special_function */
1442 "R_PPC64_DTPREL16_LO", /* name */
1443 FALSE
, /* partial_inplace */
1445 0xffff, /* dst_mask */
1446 FALSE
), /* pcrel_offset */
1448 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1449 HOWTO (R_PPC64_DTPREL16_HI
,
1450 16, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE
, /* pc_relative */
1455 complain_overflow_signed
, /* complain_on_overflow */
1456 ppc64_elf_unhandled_reloc
, /* special_function */
1457 "R_PPC64_DTPREL16_HI", /* name */
1458 FALSE
, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE
), /* pcrel_offset */
1463 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1464 HOWTO (R_PPC64_DTPREL16_HA
,
1465 16, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1468 FALSE
, /* pc_relative */
1470 complain_overflow_signed
, /* complain_on_overflow */
1471 ppc64_elf_unhandled_reloc
, /* special_function */
1472 "R_PPC64_DTPREL16_HA", /* name */
1473 FALSE
, /* partial_inplace */
1475 0xffff, /* dst_mask */
1476 FALSE
), /* pcrel_offset */
1478 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1479 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1480 32, /* rightshift */
1481 1, /* size (0 = byte, 1 = short, 2 = long) */
1483 FALSE
, /* pc_relative */
1485 complain_overflow_dont
, /* complain_on_overflow */
1486 ppc64_elf_unhandled_reloc
, /* special_function */
1487 "R_PPC64_DTPREL16_HIGHER", /* name */
1488 FALSE
, /* partial_inplace */
1490 0xffff, /* dst_mask */
1491 FALSE
), /* pcrel_offset */
1493 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1494 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1495 32, /* rightshift */
1496 1, /* size (0 = byte, 1 = short, 2 = long) */
1498 FALSE
, /* pc_relative */
1500 complain_overflow_dont
, /* complain_on_overflow */
1501 ppc64_elf_unhandled_reloc
, /* special_function */
1502 "R_PPC64_DTPREL16_HIGHERA", /* name */
1503 FALSE
, /* partial_inplace */
1505 0xffff, /* dst_mask */
1506 FALSE
), /* pcrel_offset */
1508 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1509 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1510 48, /* rightshift */
1511 1, /* size (0 = byte, 1 = short, 2 = long) */
1513 FALSE
, /* pc_relative */
1515 complain_overflow_dont
, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc
, /* special_function */
1517 "R_PPC64_DTPREL16_HIGHEST", /* name */
1518 FALSE
, /* partial_inplace */
1520 0xffff, /* dst_mask */
1521 FALSE
), /* pcrel_offset */
1523 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1524 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1525 48, /* rightshift */
1526 1, /* size (0 = byte, 1 = short, 2 = long) */
1528 FALSE
, /* pc_relative */
1530 complain_overflow_dont
, /* complain_on_overflow */
1531 ppc64_elf_unhandled_reloc
, /* special_function */
1532 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1533 FALSE
, /* partial_inplace */
1535 0xffff, /* dst_mask */
1536 FALSE
), /* pcrel_offset */
1538 /* Like DTPREL16, but for insns with a DS field. */
1539 HOWTO (R_PPC64_DTPREL16_DS
,
1541 1, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE
, /* pc_relative */
1545 complain_overflow_signed
, /* complain_on_overflow */
1546 ppc64_elf_unhandled_reloc
, /* special_function */
1547 "R_PPC64_DTPREL16_DS", /* name */
1548 FALSE
, /* partial_inplace */
1550 0xfffc, /* dst_mask */
1551 FALSE
), /* pcrel_offset */
1553 /* Like DTPREL16_DS, but no overflow. */
1554 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1556 1, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE
, /* pc_relative */
1560 complain_overflow_dont
, /* complain_on_overflow */
1561 ppc64_elf_unhandled_reloc
, /* special_function */
1562 "R_PPC64_DTPREL16_LO_DS", /* name */
1563 FALSE
, /* partial_inplace */
1565 0xfffc, /* dst_mask */
1566 FALSE
), /* pcrel_offset */
1568 /* Computes a tp-relative displacement, the difference between the value of
1569 sym+add and the value of the thread pointer (r13). */
1570 HOWTO (R_PPC64_TPREL64
,
1572 4, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_dont
, /* complain_on_overflow */
1577 ppc64_elf_unhandled_reloc
, /* special_function */
1578 "R_PPC64_TPREL64", /* name */
1579 FALSE
, /* partial_inplace */
1581 ONES (64), /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 /* A 16 bit tprel reloc. */
1585 HOWTO (R_PPC64_TPREL16
,
1587 1, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE
, /* pc_relative */
1591 complain_overflow_signed
, /* complain_on_overflow */
1592 ppc64_elf_unhandled_reloc
, /* special_function */
1593 "R_PPC64_TPREL16", /* name */
1594 FALSE
, /* partial_inplace */
1596 0xffff, /* dst_mask */
1597 FALSE
), /* pcrel_offset */
1599 /* Like TPREL16, but no overflow. */
1600 HOWTO (R_PPC64_TPREL16_LO
,
1602 1, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE
, /* pc_relative */
1606 complain_overflow_dont
, /* complain_on_overflow */
1607 ppc64_elf_unhandled_reloc
, /* special_function */
1608 "R_PPC64_TPREL16_LO", /* name */
1609 FALSE
, /* partial_inplace */
1611 0xffff, /* dst_mask */
1612 FALSE
), /* pcrel_offset */
1614 /* Like TPREL16_LO, but next higher group of 16 bits. */
1615 HOWTO (R_PPC64_TPREL16_HI
,
1616 16, /* rightshift */
1617 1, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE
, /* pc_relative */
1621 complain_overflow_signed
, /* complain_on_overflow */
1622 ppc64_elf_unhandled_reloc
, /* special_function */
1623 "R_PPC64_TPREL16_HI", /* name */
1624 FALSE
, /* partial_inplace */
1626 0xffff, /* dst_mask */
1627 FALSE
), /* pcrel_offset */
1629 /* Like TPREL16_HI, but adjust for low 16 bits. */
1630 HOWTO (R_PPC64_TPREL16_HA
,
1631 16, /* rightshift */
1632 1, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE
, /* pc_relative */
1636 complain_overflow_signed
, /* complain_on_overflow */
1637 ppc64_elf_unhandled_reloc
, /* special_function */
1638 "R_PPC64_TPREL16_HA", /* name */
1639 FALSE
, /* partial_inplace */
1641 0xffff, /* dst_mask */
1642 FALSE
), /* pcrel_offset */
1644 /* Like TPREL16_HI, but next higher group of 16 bits. */
1645 HOWTO (R_PPC64_TPREL16_HIGHER
,
1646 32, /* rightshift */
1647 1, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE
, /* pc_relative */
1651 complain_overflow_dont
, /* complain_on_overflow */
1652 ppc64_elf_unhandled_reloc
, /* special_function */
1653 "R_PPC64_TPREL16_HIGHER", /* name */
1654 FALSE
, /* partial_inplace */
1656 0xffff, /* dst_mask */
1657 FALSE
), /* pcrel_offset */
1659 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1660 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1661 32, /* rightshift */
1662 1, /* size (0 = byte, 1 = short, 2 = long) */
1664 FALSE
, /* pc_relative */
1666 complain_overflow_dont
, /* complain_on_overflow */
1667 ppc64_elf_unhandled_reloc
, /* special_function */
1668 "R_PPC64_TPREL16_HIGHERA", /* name */
1669 FALSE
, /* partial_inplace */
1671 0xffff, /* dst_mask */
1672 FALSE
), /* pcrel_offset */
1674 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1675 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1676 48, /* rightshift */
1677 1, /* size (0 = byte, 1 = short, 2 = long) */
1679 FALSE
, /* pc_relative */
1681 complain_overflow_dont
, /* complain_on_overflow */
1682 ppc64_elf_unhandled_reloc
, /* special_function */
1683 "R_PPC64_TPREL16_HIGHEST", /* name */
1684 FALSE
, /* partial_inplace */
1686 0xffff, /* dst_mask */
1687 FALSE
), /* pcrel_offset */
1689 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1690 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1691 48, /* rightshift */
1692 1, /* size (0 = byte, 1 = short, 2 = long) */
1694 FALSE
, /* pc_relative */
1696 complain_overflow_dont
, /* complain_on_overflow */
1697 ppc64_elf_unhandled_reloc
, /* special_function */
1698 "R_PPC64_TPREL16_HIGHESTA", /* name */
1699 FALSE
, /* partial_inplace */
1701 0xffff, /* dst_mask */
1702 FALSE
), /* pcrel_offset */
1704 /* Like TPREL16, but for insns with a DS field. */
1705 HOWTO (R_PPC64_TPREL16_DS
,
1707 1, /* size (0 = byte, 1 = short, 2 = long) */
1709 FALSE
, /* pc_relative */
1711 complain_overflow_signed
, /* complain_on_overflow */
1712 ppc64_elf_unhandled_reloc
, /* special_function */
1713 "R_PPC64_TPREL16_DS", /* name */
1714 FALSE
, /* partial_inplace */
1716 0xfffc, /* dst_mask */
1717 FALSE
), /* pcrel_offset */
1719 /* Like TPREL16_DS, but no overflow. */
1720 HOWTO (R_PPC64_TPREL16_LO_DS
,
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 FALSE
, /* pc_relative */
1726 complain_overflow_dont
, /* complain_on_overflow */
1727 ppc64_elf_unhandled_reloc
, /* special_function */
1728 "R_PPC64_TPREL16_LO_DS", /* name */
1729 FALSE
, /* partial_inplace */
1731 0xfffc, /* dst_mask */
1732 FALSE
), /* pcrel_offset */
1734 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1735 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1736 to the first entry relative to the TOC base (r2). */
1737 HOWTO (R_PPC64_GOT_TLSGD16
,
1739 1, /* size (0 = byte, 1 = short, 2 = long) */
1741 FALSE
, /* pc_relative */
1743 complain_overflow_signed
, /* complain_on_overflow */
1744 ppc64_elf_unhandled_reloc
, /* special_function */
1745 "R_PPC64_GOT_TLSGD16", /* name */
1746 FALSE
, /* partial_inplace */
1748 0xffff, /* dst_mask */
1749 FALSE
), /* pcrel_offset */
1751 /* Like GOT_TLSGD16, but no overflow. */
1752 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1754 1, /* size (0 = byte, 1 = short, 2 = long) */
1756 FALSE
, /* pc_relative */
1758 complain_overflow_dont
, /* complain_on_overflow */
1759 ppc64_elf_unhandled_reloc
, /* special_function */
1760 "R_PPC64_GOT_TLSGD16_LO", /* name */
1761 FALSE
, /* partial_inplace */
1763 0xffff, /* dst_mask */
1764 FALSE
), /* pcrel_offset */
1766 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1767 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1768 16, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE
, /* pc_relative */
1773 complain_overflow_signed
, /* complain_on_overflow */
1774 ppc64_elf_unhandled_reloc
, /* special_function */
1775 "R_PPC64_GOT_TLSGD16_HI", /* name */
1776 FALSE
, /* partial_inplace */
1778 0xffff, /* dst_mask */
1779 FALSE
), /* pcrel_offset */
1781 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1782 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1783 16, /* rightshift */
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE
, /* pc_relative */
1788 complain_overflow_signed
, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc
, /* special_function */
1790 "R_PPC64_GOT_TLSGD16_HA", /* name */
1791 FALSE
, /* partial_inplace */
1793 0xffff, /* dst_mask */
1794 FALSE
), /* pcrel_offset */
1796 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1797 with values (sym+add)@dtpmod and zero, and computes the offset to the
1798 first entry relative to the TOC base (r2). */
1799 HOWTO (R_PPC64_GOT_TLSLD16
,
1801 1, /* size (0 = byte, 1 = short, 2 = long) */
1803 FALSE
, /* pc_relative */
1805 complain_overflow_signed
, /* complain_on_overflow */
1806 ppc64_elf_unhandled_reloc
, /* special_function */
1807 "R_PPC64_GOT_TLSLD16", /* name */
1808 FALSE
, /* partial_inplace */
1810 0xffff, /* dst_mask */
1811 FALSE
), /* pcrel_offset */
1813 /* Like GOT_TLSLD16, but no overflow. */
1814 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1816 1, /* size (0 = byte, 1 = short, 2 = long) */
1818 FALSE
, /* pc_relative */
1820 complain_overflow_dont
, /* complain_on_overflow */
1821 ppc64_elf_unhandled_reloc
, /* special_function */
1822 "R_PPC64_GOT_TLSLD16_LO", /* name */
1823 FALSE
, /* partial_inplace */
1825 0xffff, /* dst_mask */
1826 FALSE
), /* pcrel_offset */
1828 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1829 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1830 16, /* rightshift */
1831 1, /* size (0 = byte, 1 = short, 2 = long) */
1833 FALSE
, /* pc_relative */
1835 complain_overflow_signed
, /* complain_on_overflow */
1836 ppc64_elf_unhandled_reloc
, /* special_function */
1837 "R_PPC64_GOT_TLSLD16_HI", /* name */
1838 FALSE
, /* partial_inplace */
1840 0xffff, /* dst_mask */
1841 FALSE
), /* pcrel_offset */
1843 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1844 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1845 16, /* rightshift */
1846 1, /* size (0 = byte, 1 = short, 2 = long) */
1848 FALSE
, /* pc_relative */
1850 complain_overflow_signed
, /* complain_on_overflow */
1851 ppc64_elf_unhandled_reloc
, /* special_function */
1852 "R_PPC64_GOT_TLSLD16_HA", /* name */
1853 FALSE
, /* partial_inplace */
1855 0xffff, /* dst_mask */
1856 FALSE
), /* pcrel_offset */
1858 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1859 the offset to the entry relative to the TOC base (r2). */
1860 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1862 1, /* size (0 = byte, 1 = short, 2 = long) */
1864 FALSE
, /* pc_relative */
1866 complain_overflow_signed
, /* complain_on_overflow */
1867 ppc64_elf_unhandled_reloc
, /* special_function */
1868 "R_PPC64_GOT_DTPREL16_DS", /* name */
1869 FALSE
, /* partial_inplace */
1871 0xfffc, /* dst_mask */
1872 FALSE
), /* pcrel_offset */
1874 /* Like GOT_DTPREL16_DS, but no overflow. */
1875 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1877 1, /* size (0 = byte, 1 = short, 2 = long) */
1879 FALSE
, /* pc_relative */
1881 complain_overflow_dont
, /* complain_on_overflow */
1882 ppc64_elf_unhandled_reloc
, /* special_function */
1883 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1884 FALSE
, /* partial_inplace */
1886 0xfffc, /* dst_mask */
1887 FALSE
), /* pcrel_offset */
1889 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1890 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1891 16, /* rightshift */
1892 1, /* size (0 = byte, 1 = short, 2 = long) */
1894 FALSE
, /* pc_relative */
1896 complain_overflow_signed
, /* complain_on_overflow */
1897 ppc64_elf_unhandled_reloc
, /* special_function */
1898 "R_PPC64_GOT_DTPREL16_HI", /* name */
1899 FALSE
, /* partial_inplace */
1901 0xffff, /* dst_mask */
1902 FALSE
), /* pcrel_offset */
1904 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1905 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1906 16, /* rightshift */
1907 1, /* size (0 = byte, 1 = short, 2 = long) */
1909 FALSE
, /* pc_relative */
1911 complain_overflow_signed
, /* complain_on_overflow */
1912 ppc64_elf_unhandled_reloc
, /* special_function */
1913 "R_PPC64_GOT_DTPREL16_HA", /* name */
1914 FALSE
, /* partial_inplace */
1916 0xffff, /* dst_mask */
1917 FALSE
), /* pcrel_offset */
1919 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1920 offset to the entry relative to the TOC base (r2). */
1921 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1925 FALSE
, /* pc_relative */
1927 complain_overflow_signed
, /* complain_on_overflow */
1928 ppc64_elf_unhandled_reloc
, /* special_function */
1929 "R_PPC64_GOT_TPREL16_DS", /* name */
1930 FALSE
, /* partial_inplace */
1932 0xfffc, /* dst_mask */
1933 FALSE
), /* pcrel_offset */
1935 /* Like GOT_TPREL16_DS, but no overflow. */
1936 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1940 FALSE
, /* pc_relative */
1942 complain_overflow_dont
, /* complain_on_overflow */
1943 ppc64_elf_unhandled_reloc
, /* special_function */
1944 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1945 FALSE
, /* partial_inplace */
1947 0xfffc, /* dst_mask */
1948 FALSE
), /* pcrel_offset */
1950 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1951 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1952 16, /* rightshift */
1953 1, /* size (0 = byte, 1 = short, 2 = long) */
1955 FALSE
, /* pc_relative */
1957 complain_overflow_signed
, /* complain_on_overflow */
1958 ppc64_elf_unhandled_reloc
, /* special_function */
1959 "R_PPC64_GOT_TPREL16_HI", /* name */
1960 FALSE
, /* partial_inplace */
1962 0xffff, /* dst_mask */
1963 FALSE
), /* pcrel_offset */
1965 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1966 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1967 16, /* rightshift */
1968 1, /* size (0 = byte, 1 = short, 2 = long) */
1970 FALSE
, /* pc_relative */
1972 complain_overflow_signed
, /* complain_on_overflow */
1973 ppc64_elf_unhandled_reloc
, /* special_function */
1974 "R_PPC64_GOT_TPREL16_HA", /* name */
1975 FALSE
, /* partial_inplace */
1977 0xffff, /* dst_mask */
1978 FALSE
), /* pcrel_offset */
1980 HOWTO (R_PPC64_JMP_IREL
, /* type */
1982 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1984 FALSE
, /* pc_relative */
1986 complain_overflow_dont
, /* complain_on_overflow */
1987 ppc64_elf_unhandled_reloc
, /* special_function */
1988 "R_PPC64_JMP_IREL", /* name */
1989 FALSE
, /* partial_inplace */
1992 FALSE
), /* pcrel_offset */
1994 HOWTO (R_PPC64_IRELATIVE
, /* type */
1996 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1998 FALSE
, /* pc_relative */
2000 complain_overflow_dont
, /* complain_on_overflow */
2001 bfd_elf_generic_reloc
, /* special_function */
2002 "R_PPC64_IRELATIVE", /* name */
2003 FALSE
, /* partial_inplace */
2005 ONES (64), /* dst_mask */
2006 FALSE
), /* pcrel_offset */
2008 /* A 16 bit relative relocation. */
2009 HOWTO (R_PPC64_REL16
, /* type */
2011 1, /* size (0 = byte, 1 = short, 2 = long) */
2013 TRUE
, /* pc_relative */
2015 complain_overflow_signed
, /* complain_on_overflow */
2016 bfd_elf_generic_reloc
, /* special_function */
2017 "R_PPC64_REL16", /* name */
2018 FALSE
, /* partial_inplace */
2020 0xffff, /* dst_mask */
2021 TRUE
), /* pcrel_offset */
2023 /* A 16 bit relative relocation without overflow. */
2024 HOWTO (R_PPC64_REL16_LO
, /* type */
2026 1, /* size (0 = byte, 1 = short, 2 = long) */
2028 TRUE
, /* pc_relative */
2030 complain_overflow_dont
,/* complain_on_overflow */
2031 bfd_elf_generic_reloc
, /* special_function */
2032 "R_PPC64_REL16_LO", /* name */
2033 FALSE
, /* partial_inplace */
2035 0xffff, /* dst_mask */
2036 TRUE
), /* pcrel_offset */
2038 /* The high order 16 bits of a relative address. */
2039 HOWTO (R_PPC64_REL16_HI
, /* type */
2040 16, /* rightshift */
2041 1, /* size (0 = byte, 1 = short, 2 = long) */
2043 TRUE
, /* pc_relative */
2045 complain_overflow_signed
, /* complain_on_overflow */
2046 bfd_elf_generic_reloc
, /* special_function */
2047 "R_PPC64_REL16_HI", /* name */
2048 FALSE
, /* partial_inplace */
2050 0xffff, /* dst_mask */
2051 TRUE
), /* pcrel_offset */
2053 /* The high order 16 bits of a relative address, plus 1 if the contents of
2054 the low 16 bits, treated as a signed number, is negative. */
2055 HOWTO (R_PPC64_REL16_HA
, /* type */
2056 16, /* rightshift */
2057 1, /* size (0 = byte, 1 = short, 2 = long) */
2059 TRUE
, /* pc_relative */
2061 complain_overflow_signed
, /* complain_on_overflow */
2062 ppc64_elf_ha_reloc
, /* special_function */
2063 "R_PPC64_REL16_HA", /* name */
2064 FALSE
, /* partial_inplace */
2066 0xffff, /* dst_mask */
2067 TRUE
), /* pcrel_offset */
2069 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2070 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2071 16, /* rightshift */
2072 2, /* size (0 = byte, 1 = short, 2 = long) */
2074 TRUE
, /* pc_relative */
2076 complain_overflow_signed
, /* complain_on_overflow */
2077 ppc64_elf_ha_reloc
, /* special_function */
2078 "R_PPC64_REL16DX_HA", /* name */
2079 FALSE
, /* partial_inplace */
2081 0x1fffc1, /* dst_mask */
2082 TRUE
), /* pcrel_offset */
2084 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2085 HOWTO (R_PPC64_16DX_HA
, /* type */
2086 16, /* rightshift */
2087 2, /* size (0 = byte, 1 = short, 2 = long) */
2089 FALSE
, /* pc_relative */
2091 complain_overflow_signed
, /* complain_on_overflow */
2092 ppc64_elf_ha_reloc
, /* special_function */
2093 "R_PPC64_16DX_HA", /* name */
2094 FALSE
, /* partial_inplace */
2096 0x1fffc1, /* dst_mask */
2097 FALSE
), /* pcrel_offset */
2099 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2100 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2101 16, /* rightshift */
2102 1, /* size (0 = byte, 1 = short, 2 = long) */
2104 FALSE
, /* pc_relative */
2106 complain_overflow_dont
, /* complain_on_overflow */
2107 bfd_elf_generic_reloc
, /* special_function */
2108 "R_PPC64_ADDR16_HIGH", /* name */
2109 FALSE
, /* partial_inplace */
2111 0xffff, /* dst_mask */
2112 FALSE
), /* pcrel_offset */
2114 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2115 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2116 16, /* rightshift */
2117 1, /* size (0 = byte, 1 = short, 2 = long) */
2119 FALSE
, /* pc_relative */
2121 complain_overflow_dont
, /* complain_on_overflow */
2122 ppc64_elf_ha_reloc
, /* special_function */
2123 "R_PPC64_ADDR16_HIGHA", /* name */
2124 FALSE
, /* partial_inplace */
2126 0xffff, /* dst_mask */
2127 FALSE
), /* pcrel_offset */
2129 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2130 HOWTO (R_PPC64_DTPREL16_HIGH
,
2131 16, /* rightshift */
2132 1, /* size (0 = byte, 1 = short, 2 = long) */
2134 FALSE
, /* pc_relative */
2136 complain_overflow_dont
, /* complain_on_overflow */
2137 ppc64_elf_unhandled_reloc
, /* special_function */
2138 "R_PPC64_DTPREL16_HIGH", /* name */
2139 FALSE
, /* partial_inplace */
2141 0xffff, /* dst_mask */
2142 FALSE
), /* pcrel_offset */
2144 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2145 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2146 16, /* rightshift */
2147 1, /* size (0 = byte, 1 = short, 2 = long) */
2149 FALSE
, /* pc_relative */
2151 complain_overflow_dont
, /* complain_on_overflow */
2152 ppc64_elf_unhandled_reloc
, /* special_function */
2153 "R_PPC64_DTPREL16_HIGHA", /* name */
2154 FALSE
, /* partial_inplace */
2156 0xffff, /* dst_mask */
2157 FALSE
), /* pcrel_offset */
2159 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2160 HOWTO (R_PPC64_TPREL16_HIGH
,
2161 16, /* rightshift */
2162 1, /* size (0 = byte, 1 = short, 2 = long) */
2164 FALSE
, /* pc_relative */
2166 complain_overflow_dont
, /* complain_on_overflow */
2167 ppc64_elf_unhandled_reloc
, /* special_function */
2168 "R_PPC64_TPREL16_HIGH", /* name */
2169 FALSE
, /* partial_inplace */
2171 0xffff, /* dst_mask */
2172 FALSE
), /* pcrel_offset */
2174 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2175 HOWTO (R_PPC64_TPREL16_HIGHA
,
2176 16, /* rightshift */
2177 1, /* size (0 = byte, 1 = short, 2 = long) */
2179 FALSE
, /* pc_relative */
2181 complain_overflow_dont
, /* complain_on_overflow */
2182 ppc64_elf_unhandled_reloc
, /* special_function */
2183 "R_PPC64_TPREL16_HIGHA", /* name */
2184 FALSE
, /* partial_inplace */
2186 0xffff, /* dst_mask */
2187 FALSE
), /* pcrel_offset */
2189 /* Marker reloc on ELFv2 large-model function entry. */
2190 HOWTO (R_PPC64_ENTRY
,
2192 2, /* size (0 = byte, 1 = short, 2 = long) */
2194 FALSE
, /* pc_relative */
2196 complain_overflow_dont
, /* complain_on_overflow */
2197 bfd_elf_generic_reloc
, /* special_function */
2198 "R_PPC64_ENTRY", /* name */
2199 FALSE
, /* partial_inplace */
2202 FALSE
), /* pcrel_offset */
2204 /* Like ADDR64, but use local entry point of function. */
2205 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2207 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2209 FALSE
, /* pc_relative */
2211 complain_overflow_dont
, /* complain_on_overflow */
2212 bfd_elf_generic_reloc
, /* special_function */
2213 "R_PPC64_ADDR64_LOCAL", /* name */
2214 FALSE
, /* partial_inplace */
2216 ONES (64), /* dst_mask */
2217 FALSE
), /* pcrel_offset */
2219 /* GNU extension to record C++ vtable hierarchy. */
2220 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2222 0, /* size (0 = byte, 1 = short, 2 = long) */
2224 FALSE
, /* pc_relative */
2226 complain_overflow_dont
, /* complain_on_overflow */
2227 NULL
, /* special_function */
2228 "R_PPC64_GNU_VTINHERIT", /* name */
2229 FALSE
, /* partial_inplace */
2232 FALSE
), /* pcrel_offset */
2234 /* GNU extension to record C++ vtable member usage. */
2235 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2237 0, /* size (0 = byte, 1 = short, 2 = long) */
2239 FALSE
, /* pc_relative */
2241 complain_overflow_dont
, /* complain_on_overflow */
2242 NULL
, /* special_function */
2243 "R_PPC64_GNU_VTENTRY", /* name */
2244 FALSE
, /* partial_inplace */
2247 FALSE
), /* pcrel_offset */
2251 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2255 ppc_howto_init (void)
2257 unsigned int i
, type
;
2259 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2261 type
= ppc64_elf_howto_raw
[i
].type
;
2262 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2263 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2267 static reloc_howto_type
*
2268 ppc64_elf_reloc_type_lookup (bfd
*abfd
,
2269 bfd_reloc_code_real_type code
)
2271 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2273 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2274 /* Initialize howto table if needed. */
2280 /* xgettext:c-format */
2281 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, (int) code
);
2282 bfd_set_error (bfd_error_bad_value
);
2285 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2287 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2289 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2291 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2293 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2295 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2297 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2299 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2301 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2303 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2305 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2307 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2309 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2311 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2313 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2315 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2317 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2319 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2321 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2323 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2325 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2327 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2329 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2331 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2333 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2335 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2337 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2339 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2341 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2343 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2345 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2347 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2349 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2351 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2353 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2355 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2357 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2359 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2361 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2363 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2365 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2367 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2369 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2371 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2373 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2375 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2377 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2379 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2381 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2383 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2385 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2387 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2389 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2391 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2393 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2395 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2397 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2399 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2401 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2403 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2405 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2407 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2409 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2411 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2413 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2415 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2417 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2419 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2421 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2423 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2427 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2429 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2431 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2433 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2437 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2441 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2443 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2445 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2447 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2449 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2451 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2453 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2455 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2457 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2459 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2461 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2463 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2465 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2467 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2469 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2471 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2473 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2475 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2477 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2479 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2481 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2483 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2485 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2487 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2489 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2491 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2493 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2495 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2497 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2499 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2501 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2503 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2505 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2507 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC64_16DX_HA
;
2509 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2511 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2513 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2515 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2517 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2521 return ppc64_elf_howto_table
[r
];
2524 static reloc_howto_type
*
2525 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2530 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2531 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2532 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2533 return &ppc64_elf_howto_raw
[i
];
2539 /* Set the howto pointer for a PowerPC ELF reloc. */
2542 ppc64_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
2543 Elf_Internal_Rela
*dst
)
2547 /* Initialize howto table if needed. */
2548 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2551 type
= ELF64_R_TYPE (dst
->r_info
);
2552 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2554 /* xgettext:c-format */
2555 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2557 bfd_set_error (bfd_error_bad_value
);
2560 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2561 if (cache_ptr
->howto
== NULL
|| cache_ptr
->howto
->name
== NULL
)
2563 /* xgettext:c-format */
2564 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2566 bfd_set_error (bfd_error_bad_value
);
2573 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2575 static bfd_reloc_status_type
2576 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2577 void *data
, asection
*input_section
,
2578 bfd
*output_bfd
, char **error_message
)
2580 enum elf_ppc64_reloc_type r_type
;
2582 bfd_size_type octets
;
2585 /* If this is a relocatable link (output_bfd test tells us), just
2586 call the generic function. Any adjustment will be done at final
2588 if (output_bfd
!= NULL
)
2589 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2590 input_section
, output_bfd
, error_message
);
2592 /* Adjust the addend for sign extension of the low 16 bits.
2593 We won't actually be using the low 16 bits, so trashing them
2595 reloc_entry
->addend
+= 0x8000;
2596 r_type
= reloc_entry
->howto
->type
;
2597 if (r_type
!= R_PPC64_REL16DX_HA
)
2598 return bfd_reloc_continue
;
2601 if (!bfd_is_com_section (symbol
->section
))
2602 value
= symbol
->value
;
2603 value
+= (reloc_entry
->addend
2604 + symbol
->section
->output_offset
2605 + symbol
->section
->output_section
->vma
);
2606 value
-= (reloc_entry
->address
2607 + input_section
->output_offset
2608 + input_section
->output_section
->vma
);
2609 value
= (bfd_signed_vma
) value
>> 16;
2611 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2612 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2614 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2615 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2616 if (value
+ 0x8000 > 0xffff)
2617 return bfd_reloc_overflow
;
2618 return bfd_reloc_ok
;
2621 static bfd_reloc_status_type
2622 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2623 void *data
, asection
*input_section
,
2624 bfd
*output_bfd
, char **error_message
)
2626 if (output_bfd
!= NULL
)
2627 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2628 input_section
, output_bfd
, error_message
);
2630 if (strcmp (symbol
->section
->name
, ".opd") == 0
2631 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2633 bfd_vma dest
= opd_entry_value (symbol
->section
,
2634 symbol
->value
+ reloc_entry
->addend
,
2636 if (dest
!= (bfd_vma
) -1)
2637 reloc_entry
->addend
= dest
- (symbol
->value
2638 + symbol
->section
->output_section
->vma
2639 + symbol
->section
->output_offset
);
2643 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2645 if (symbol
->section
->owner
!= abfd
2646 && symbol
->section
->owner
!= NULL
2647 && abiversion (symbol
->section
->owner
) >= 2)
2651 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2653 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2655 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2657 elfsym
= (elf_symbol_type
*) symdef
;
2663 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2665 return bfd_reloc_continue
;
2668 static bfd_reloc_status_type
2669 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2670 void *data
, asection
*input_section
,
2671 bfd
*output_bfd
, char **error_message
)
2674 enum elf_ppc64_reloc_type r_type
;
2675 bfd_size_type octets
;
2676 /* Assume 'at' branch hints. */
2677 bfd_boolean is_isa_v2
= TRUE
;
2679 /* If this is a relocatable link (output_bfd test tells us), just
2680 call the generic function. Any adjustment will be done at final
2682 if (output_bfd
!= NULL
)
2683 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2684 input_section
, output_bfd
, error_message
);
2686 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2687 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2688 insn
&= ~(0x01 << 21);
2689 r_type
= reloc_entry
->howto
->type
;
2690 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2691 || r_type
== R_PPC64_REL14_BRTAKEN
)
2692 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2696 /* Set 'a' bit. This is 0b00010 in BO field for branch
2697 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2698 for branch on CTR insns (BO == 1a00t or 1a01t). */
2699 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2701 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2711 if (!bfd_is_com_section (symbol
->section
))
2712 target
= symbol
->value
;
2713 target
+= symbol
->section
->output_section
->vma
;
2714 target
+= symbol
->section
->output_offset
;
2715 target
+= reloc_entry
->addend
;
2717 from
= (reloc_entry
->address
2718 + input_section
->output_offset
2719 + input_section
->output_section
->vma
);
2721 /* Invert 'y' bit if not the default. */
2722 if ((bfd_signed_vma
) (target
- from
) < 0)
2725 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2727 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2728 input_section
, output_bfd
, error_message
);
2731 static bfd_reloc_status_type
2732 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2733 void *data
, asection
*input_section
,
2734 bfd
*output_bfd
, char **error_message
)
2736 /* If this is a relocatable link (output_bfd test tells us), just
2737 call the generic function. Any adjustment will be done at final
2739 if (output_bfd
!= NULL
)
2740 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2741 input_section
, output_bfd
, error_message
);
2743 /* Subtract the symbol section base address. */
2744 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2745 return bfd_reloc_continue
;
2748 static bfd_reloc_status_type
2749 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2750 void *data
, asection
*input_section
,
2751 bfd
*output_bfd
, char **error_message
)
2753 /* If this is a relocatable link (output_bfd test tells us), just
2754 call the generic function. Any adjustment will be done at final
2756 if (output_bfd
!= NULL
)
2757 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2758 input_section
, output_bfd
, error_message
);
2760 /* Subtract the symbol section base address. */
2761 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2763 /* Adjust the addend for sign extension of the low 16 bits. */
2764 reloc_entry
->addend
+= 0x8000;
2765 return bfd_reloc_continue
;
2768 static bfd_reloc_status_type
2769 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2770 void *data
, asection
*input_section
,
2771 bfd
*output_bfd
, char **error_message
)
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd
!= NULL
)
2779 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2780 input_section
, output_bfd
, error_message
);
2782 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2784 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2786 /* Subtract the TOC base address. */
2787 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2788 return bfd_reloc_continue
;
2791 static bfd_reloc_status_type
2792 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2793 void *data
, asection
*input_section
,
2794 bfd
*output_bfd
, char **error_message
)
2798 /* If this is a relocatable link (output_bfd test tells us), just
2799 call the generic function. Any adjustment will be done at final
2801 if (output_bfd
!= NULL
)
2802 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2803 input_section
, output_bfd
, error_message
);
2805 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2807 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2809 /* Subtract the TOC base address. */
2810 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2812 /* Adjust the addend for sign extension of the low 16 bits. */
2813 reloc_entry
->addend
+= 0x8000;
2814 return bfd_reloc_continue
;
2817 static bfd_reloc_status_type
2818 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2819 void *data
, asection
*input_section
,
2820 bfd
*output_bfd
, char **error_message
)
2823 bfd_size_type octets
;
2825 /* If this is a relocatable link (output_bfd test tells us), just
2826 call the generic function. Any adjustment will be done at final
2828 if (output_bfd
!= NULL
)
2829 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2830 input_section
, output_bfd
, error_message
);
2832 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2834 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2836 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2837 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2838 return bfd_reloc_ok
;
2841 static bfd_reloc_status_type
2842 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2843 void *data
, asection
*input_section
,
2844 bfd
*output_bfd
, char **error_message
)
2846 /* If this is a relocatable link (output_bfd test tells us), just
2847 call the generic function. Any adjustment will be done at final
2849 if (output_bfd
!= NULL
)
2850 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2851 input_section
, output_bfd
, error_message
);
2853 if (error_message
!= NULL
)
2855 static char buf
[60];
2856 sprintf (buf
, "generic linker can't handle %s",
2857 reloc_entry
->howto
->name
);
2858 *error_message
= buf
;
2860 return bfd_reloc_dangerous
;
2863 /* Track GOT entries needed for a given symbol. We might need more
2864 than one got entry per symbol. */
2867 struct got_entry
*next
;
2869 /* The symbol addend that we'll be placing in the GOT. */
2872 /* Unlike other ELF targets, we use separate GOT entries for the same
2873 symbol referenced from different input files. This is to support
2874 automatic multiple TOC/GOT sections, where the TOC base can vary
2875 from one input file to another. After partitioning into TOC groups
2876 we merge entries within the group.
2878 Point to the BFD owning this GOT entry. */
2881 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2882 TLS_TPREL or TLS_DTPREL for tls entries. */
2883 unsigned char tls_type
;
2885 /* Non-zero if got.ent points to real entry. */
2886 unsigned char is_indirect
;
2888 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2891 bfd_signed_vma refcount
;
2893 struct got_entry
*ent
;
2897 /* The same for PLT. */
2900 struct plt_entry
*next
;
2906 bfd_signed_vma refcount
;
2911 struct ppc64_elf_obj_tdata
2913 struct elf_obj_tdata elf
;
2915 /* Shortcuts to dynamic linker sections. */
2919 /* Used during garbage collection. We attach global symbols defined
2920 on removed .opd entries to this section so that the sym is removed. */
2921 asection
*deleted_section
;
2923 /* TLS local dynamic got entry handling. Support for multiple GOT
2924 sections means we potentially need one of these for each input bfd. */
2925 struct got_entry tlsld_got
;
2928 /* A copy of relocs before they are modified for --emit-relocs. */
2929 Elf_Internal_Rela
*relocs
;
2931 /* Section contents. */
2935 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2936 the reloc to be in the range -32768 to 32767. */
2937 unsigned int has_small_toc_reloc
: 1;
2939 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2940 instruction not one we handle. */
2941 unsigned int unexpected_toc_insn
: 1;
2944 #define ppc64_elf_tdata(bfd) \
2945 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2947 #define ppc64_tlsld_got(bfd) \
2948 (&ppc64_elf_tdata (bfd)->tlsld_got)
2950 #define is_ppc64_elf(bfd) \
2951 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2952 && elf_object_id (bfd) == PPC64_ELF_DATA)
2954 /* Override the generic function because we store some extras. */
2957 ppc64_elf_mkobject (bfd
*abfd
)
2959 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2963 /* Fix bad default arch selected for a 64 bit input bfd when the
2964 default is 32 bit. Also select arch based on apuinfo. */
2967 ppc64_elf_object_p (bfd
*abfd
)
2969 if (!abfd
->arch_info
->the_default
)
2972 if (abfd
->arch_info
->bits_per_word
== 32)
2974 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2976 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2978 /* Relies on arch after 32 bit default being 64 bit default. */
2979 abfd
->arch_info
= abfd
->arch_info
->next
;
2980 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2983 return _bfd_elf_ppc_set_arch (abfd
);
2986 /* Support for core dump NOTE sections. */
2989 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2991 size_t offset
, size
;
2993 if (note
->descsz
!= 504)
2997 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
3000 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
3006 /* Make a ".reg/999" section. */
3007 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
3008 size
, note
->descpos
+ offset
);
3012 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
3014 if (note
->descsz
!= 136)
3017 elf_tdata (abfd
)->core
->pid
3018 = bfd_get_32 (abfd
, note
->descdata
+ 24);
3019 elf_tdata (abfd
)->core
->program
3020 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
3021 elf_tdata (abfd
)->core
->command
3022 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
3028 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
3038 char data
[136] ATTRIBUTE_NONSTRING
;
3041 va_start (ap
, note_type
);
3042 memset (data
, 0, sizeof (data
));
3043 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
3044 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3046 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
3047 -Wstringop-truncation:
3048 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
3050 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
;
3052 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
3053 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
3057 return elfcore_write_note (abfd
, buf
, bufsiz
,
3058 "CORE", note_type
, data
, sizeof (data
));
3069 va_start (ap
, note_type
);
3070 memset (data
, 0, 112);
3071 pid
= va_arg (ap
, long);
3072 bfd_put_32 (abfd
, pid
, data
+ 32);
3073 cursig
= va_arg (ap
, int);
3074 bfd_put_16 (abfd
, cursig
, data
+ 12);
3075 greg
= va_arg (ap
, const void *);
3076 memcpy (data
+ 112, greg
, 384);
3077 memset (data
+ 496, 0, 8);
3079 return elfcore_write_note (abfd
, buf
, bufsiz
,
3080 "CORE", note_type
, data
, sizeof (data
));
3085 /* Add extra PPC sections. */
3087 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3089 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3090 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3091 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3092 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3093 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3094 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3095 { NULL
, 0, 0, 0, 0 }
3098 enum _ppc64_sec_type
{
3104 struct _ppc64_elf_section_data
3106 struct bfd_elf_section_data elf
;
3110 /* An array with one entry for each opd function descriptor,
3111 and some spares since opd entries may be either 16 or 24 bytes. */
3112 #define OPD_NDX(OFF) ((OFF) >> 4)
3113 struct _opd_sec_data
3115 /* Points to the function code section for local opd entries. */
3116 asection
**func_sec
;
3118 /* After editing .opd, adjust references to opd local syms. */
3122 /* An array for toc sections, indexed by offset/8. */
3123 struct _toc_sec_data
3125 /* Specifies the relocation symbol index used at a given toc offset. */
3128 /* And the relocation addend. */
3133 enum _ppc64_sec_type sec_type
:2;
3135 /* Flag set when small branches are detected. Used to
3136 select suitable defaults for the stub group size. */
3137 unsigned int has_14bit_branch
:1;
3139 /* Flag set when PLTCALL relocs are detected. */
3140 unsigned int has_pltcall
:1;
3143 #define ppc64_elf_section_data(sec) \
3144 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3147 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3149 if (!sec
->used_by_bfd
)
3151 struct _ppc64_elf_section_data
*sdata
;
3152 bfd_size_type amt
= sizeof (*sdata
);
3154 sdata
= bfd_zalloc (abfd
, amt
);
3157 sec
->used_by_bfd
= sdata
;
3160 return _bfd_elf_new_section_hook (abfd
, sec
);
3163 static struct _opd_sec_data
*
3164 get_opd_info (asection
* sec
)
3167 && ppc64_elf_section_data (sec
) != NULL
3168 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3169 return &ppc64_elf_section_data (sec
)->u
.opd
;
3173 /* Parameters for the qsort hook. */
3174 static bfd_boolean synthetic_relocatable
;
3175 static asection
*synthetic_opd
;
3177 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3180 compare_symbols (const void *ap
, const void *bp
)
3182 const asymbol
*a
= * (const asymbol
**) ap
;
3183 const asymbol
*b
= * (const asymbol
**) bp
;
3185 /* Section symbols first. */
3186 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3188 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3191 /* then .opd symbols. */
3192 if (synthetic_opd
!= NULL
)
3194 if (strcmp (a
->section
->name
, ".opd") == 0
3195 && strcmp (b
->section
->name
, ".opd") != 0)
3197 if (strcmp (a
->section
->name
, ".opd") != 0
3198 && strcmp (b
->section
->name
, ".opd") == 0)
3202 /* then other code symbols. */
3203 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3204 == (SEC_CODE
| SEC_ALLOC
)
3205 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3206 != (SEC_CODE
| SEC_ALLOC
))
3209 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3210 != (SEC_CODE
| SEC_ALLOC
)
3211 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3212 == (SEC_CODE
| SEC_ALLOC
))
3215 if (synthetic_relocatable
)
3217 if (a
->section
->id
< b
->section
->id
)
3220 if (a
->section
->id
> b
->section
->id
)
3224 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3227 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3230 /* For syms with the same value, prefer strong dynamic global function
3231 syms over other syms. */
3232 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3235 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3238 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3241 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3244 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3247 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3250 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3253 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3259 /* Search SYMS for a symbol of the given VALUE. */
3262 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3266 if (id
== (unsigned) -1)
3270 mid
= (lo
+ hi
) >> 1;
3271 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3273 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3283 mid
= (lo
+ hi
) >> 1;
3284 if (syms
[mid
]->section
->id
< id
)
3286 else if (syms
[mid
]->section
->id
> id
)
3288 else if (syms
[mid
]->value
< value
)
3290 else if (syms
[mid
]->value
> value
)
3300 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3302 bfd_vma vma
= *(bfd_vma
*) ptr
;
3303 return ((section
->flags
& SEC_ALLOC
) != 0
3304 && section
->vma
<= vma
3305 && vma
< section
->vma
+ section
->size
);
3308 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3309 entry syms. Also generate @plt symbols for the glink branch table.
3310 Returns count of synthetic symbols in RET or -1 on error. */
3313 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3314 long static_count
, asymbol
**static_syms
,
3315 long dyn_count
, asymbol
**dyn_syms
,
3321 size_t symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3322 asection
*opd
= NULL
;
3323 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3325 int abi
= abiversion (abfd
);
3331 opd
= bfd_get_section_by_name (abfd
, ".opd");
3332 if (opd
== NULL
&& abi
== 1)
3344 symcount
= static_count
;
3346 symcount
+= dyn_count
;
3350 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3354 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3356 /* Use both symbol tables. */
3357 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3358 memcpy (syms
+ static_count
, dyn_syms
,
3359 (dyn_count
+ 1) * sizeof (*syms
));
3361 else if (!relocatable
&& static_count
== 0)
3362 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3364 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3366 /* Trim uninteresting symbols. Interesting symbols are section,
3367 function, and notype symbols. */
3368 for (i
= 0, j
= 0; i
< symcount
; ++i
)
3369 if ((syms
[i
]->flags
& (BSF_FILE
| BSF_OBJECT
| BSF_THREAD_LOCAL
3370 | BSF_RELC
| BSF_SRELC
)) == 0)
3371 syms
[j
++] = syms
[i
];
3374 synthetic_relocatable
= relocatable
;
3375 synthetic_opd
= opd
;
3376 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3378 if (!relocatable
&& symcount
> 1)
3380 /* Trim duplicate syms, since we may have merged the normal
3381 and dynamic symbols. Actually, we only care about syms
3382 that have different values, so trim any with the same
3383 value. Don't consider ifunc and ifunc resolver symbols
3384 duplicates however, because GDB wants to know whether a
3385 text symbol is an ifunc resolver. */
3386 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3388 const asymbol
*s0
= syms
[i
- 1];
3389 const asymbol
*s1
= syms
[i
];
3391 if ((s0
->value
+ s0
->section
->vma
3392 != s1
->value
+ s1
->section
->vma
)
3393 || ((s0
->flags
& BSF_GNU_INDIRECT_FUNCTION
)
3394 != (s1
->flags
& BSF_GNU_INDIRECT_FUNCTION
)))
3395 syms
[j
++] = syms
[i
];
3401 /* Note that here and in compare_symbols we can't compare opd and
3402 sym->section directly. With separate debug info files, the
3403 symbols will be extracted from the debug file while abfd passed
3404 to this function is the real binary. */
3405 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3409 for (; i
< symcount
; ++i
)
3410 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3411 | SEC_THREAD_LOCAL
))
3412 != (SEC_CODE
| SEC_ALLOC
))
3413 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3417 for (; i
< symcount
; ++i
)
3418 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3422 for (; i
< symcount
; ++i
)
3423 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3427 for (; i
< symcount
; ++i
)
3428 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3429 != (SEC_CODE
| SEC_ALLOC
))
3437 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3442 if (opdsymend
== secsymend
)
3445 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3446 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3450 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3457 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3461 while (r
< opd
->relocation
+ relcount
3462 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3465 if (r
== opd
->relocation
+ relcount
)
3468 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3471 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3474 sym
= *r
->sym_ptr_ptr
;
3475 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3476 sym
->section
->id
, sym
->value
+ r
->addend
))
3479 size
+= sizeof (asymbol
);
3480 size
+= strlen (syms
[i
]->name
) + 2;
3486 s
= *ret
= bfd_malloc (size
);
3493 names
= (char *) (s
+ count
);
3495 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3499 while (r
< opd
->relocation
+ relcount
3500 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3503 if (r
== opd
->relocation
+ relcount
)
3506 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3509 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3512 sym
= *r
->sym_ptr_ptr
;
3513 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3514 sym
->section
->id
, sym
->value
+ r
->addend
))
3519 s
->flags
|= BSF_SYNTHETIC
;
3520 s
->section
= sym
->section
;
3521 s
->value
= sym
->value
+ r
->addend
;
3524 len
= strlen (syms
[i
]->name
);
3525 memcpy (names
, syms
[i
]->name
, len
+ 1);
3527 /* Have udata.p point back to the original symbol this
3528 synthetic symbol was derived from. */
3529 s
->udata
.p
= syms
[i
];
3536 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3537 bfd_byte
*contents
= NULL
;
3539 size_t plt_count
= 0;
3540 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3541 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3544 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3546 free_contents_and_exit_err
:
3548 free_contents_and_exit
:
3555 for (i
= secsymend
; i
< opdsymend
; ++i
)
3559 /* Ignore bogus symbols. */
3560 if (syms
[i
]->value
> opd
->size
- 8)
3563 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3564 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3567 size
+= sizeof (asymbol
);
3568 size
+= strlen (syms
[i
]->name
) + 2;
3572 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3574 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3576 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3578 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3580 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3581 goto free_contents_and_exit_err
;
3583 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3584 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3587 extdynend
= extdyn
+ dynamic
->size
;
3588 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3590 Elf_Internal_Dyn dyn
;
3591 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3593 if (dyn
.d_tag
== DT_NULL
)
3596 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3598 /* The first glink stub starts at DT_PPC64_GLINK plus 32.
3599 See comment in ppc64_elf_finish_dynamic_sections. */
3600 glink_vma
= dyn
.d_un
.d_val
+ 8 * 4;
3601 /* The .glink section usually does not survive the final
3602 link; search for the section (usually .text) where the
3603 glink stubs now reside. */
3604 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3615 /* Determine __glink trampoline by reading the relative branch
3616 from the first glink stub. */
3618 unsigned int off
= 0;
3620 while (bfd_get_section_contents (abfd
, glink
, buf
,
3621 glink_vma
+ off
- glink
->vma
, 4))
3623 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3625 if ((insn
& ~0x3fffffc) == 0)
3627 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3636 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3638 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3641 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3642 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3643 goto free_contents_and_exit_err
;
3645 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3646 size
+= plt_count
* sizeof (asymbol
);
3648 p
= relplt
->relocation
;
3649 for (i
= 0; i
< plt_count
; i
++, p
++)
3651 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3653 size
+= sizeof ("+0x") - 1 + 16;
3659 goto free_contents_and_exit
;
3660 s
= *ret
= bfd_malloc (size
);
3662 goto free_contents_and_exit_err
;
3664 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3666 for (i
= secsymend
; i
< opdsymend
; ++i
)
3670 if (syms
[i
]->value
> opd
->size
- 8)
3673 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3674 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3678 asection
*sec
= abfd
->sections
;
3685 size_t mid
= (lo
+ hi
) >> 1;
3686 if (syms
[mid
]->section
->vma
< ent
)
3688 else if (syms
[mid
]->section
->vma
> ent
)
3692 sec
= syms
[mid
]->section
;
3697 if (lo
>= hi
&& lo
> codesecsym
)
3698 sec
= syms
[lo
- 1]->section
;
3700 for (; sec
!= NULL
; sec
= sec
->next
)
3704 /* SEC_LOAD may not be set if SEC is from a separate debug
3706 if ((sec
->flags
& SEC_ALLOC
) == 0)
3708 if ((sec
->flags
& SEC_CODE
) != 0)
3711 s
->flags
|= BSF_SYNTHETIC
;
3712 s
->value
= ent
- s
->section
->vma
;
3715 len
= strlen (syms
[i
]->name
);
3716 memcpy (names
, syms
[i
]->name
, len
+ 1);
3718 /* Have udata.p point back to the original symbol this
3719 synthetic symbol was derived from. */
3720 s
->udata
.p
= syms
[i
];
3726 if (glink
!= NULL
&& relplt
!= NULL
)
3730 /* Add a symbol for the main glink trampoline. */
3731 memset (s
, 0, sizeof *s
);
3733 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3735 s
->value
= resolv_vma
- glink
->vma
;
3737 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3738 names
+= sizeof ("__glink_PLTresolve");
3743 /* FIXME: It would be very much nicer to put sym@plt on the
3744 stub rather than on the glink branch table entry. The
3745 objdump disassembler would then use a sensible symbol
3746 name on plt calls. The difficulty in doing so is
3747 a) finding the stubs, and,
3748 b) matching stubs against plt entries, and,
3749 c) there can be multiple stubs for a given plt entry.
3751 Solving (a) could be done by code scanning, but older
3752 ppc64 binaries used different stubs to current code.
3753 (b) is the tricky one since you need to known the toc
3754 pointer for at least one function that uses a pic stub to
3755 be able to calculate the plt address referenced.
3756 (c) means gdb would need to set multiple breakpoints (or
3757 find the glink branch itself) when setting breakpoints
3758 for pending shared library loads. */
3759 p
= relplt
->relocation
;
3760 for (i
= 0; i
< plt_count
; i
++, p
++)
3764 *s
= **p
->sym_ptr_ptr
;
3765 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3766 we are defining a symbol, ensure one of them is set. */
3767 if ((s
->flags
& BSF_LOCAL
) == 0)
3768 s
->flags
|= BSF_GLOBAL
;
3769 s
->flags
|= BSF_SYNTHETIC
;
3771 s
->value
= glink_vma
- glink
->vma
;
3774 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3775 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3779 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3780 names
+= sizeof ("+0x") - 1;
3781 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3782 names
+= strlen (names
);
3784 memcpy (names
, "@plt", sizeof ("@plt"));
3785 names
+= sizeof ("@plt");
3805 /* The following functions are specific to the ELF linker, while
3806 functions above are used generally. Those named ppc64_elf_* are
3807 called by the main ELF linker code. They appear in this file more
3808 or less in the order in which they are called. eg.
3809 ppc64_elf_check_relocs is called early in the link process,
3810 ppc64_elf_finish_dynamic_sections is one of the last functions
3813 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3814 functions have both a function code symbol and a function descriptor
3815 symbol. A call to foo in a relocatable object file looks like:
3822 The function definition in another object file might be:
3826 . .quad .TOC.@tocbase
3832 When the linker resolves the call during a static link, the branch
3833 unsurprisingly just goes to .foo and the .opd information is unused.
3834 If the function definition is in a shared library, things are a little
3835 different: The call goes via a plt call stub, the opd information gets
3836 copied to the plt, and the linker patches the nop.
3844 . std 2,40(1) # in practice, the call stub
3845 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3846 . addi 11,11,Lfoo@toc@l # this is the general idea
3854 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3856 The "reloc ()" notation is supposed to indicate that the linker emits
3857 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3860 What are the difficulties here? Well, firstly, the relocations
3861 examined by the linker in check_relocs are against the function code
3862 sym .foo, while the dynamic relocation in the plt is emitted against
3863 the function descriptor symbol, foo. Somewhere along the line, we need
3864 to carefully copy dynamic link information from one symbol to the other.
3865 Secondly, the generic part of the elf linker will make .foo a dynamic
3866 symbol as is normal for most other backends. We need foo dynamic
3867 instead, at least for an application final link. However, when
3868 creating a shared library containing foo, we need to have both symbols
3869 dynamic so that references to .foo are satisfied during the early
3870 stages of linking. Otherwise the linker might decide to pull in a
3871 definition from some other object, eg. a static library.
3873 Update: As of August 2004, we support a new convention. Function
3874 calls may use the function descriptor symbol, ie. "bl foo". This
3875 behaves exactly as "bl .foo". */
3877 /* Of those relocs that might be copied as dynamic relocs, this
3878 function selects those that must be copied when linking a shared
3879 library or PIE, even when the symbol is local. */
3882 must_be_dyn_reloc (struct bfd_link_info
*info
,
3883 enum elf_ppc64_reloc_type r_type
)
3888 /* Only relative relocs can be resolved when the object load
3889 address isn't fixed. DTPREL64 is excluded because the
3890 dynamic linker needs to differentiate global dynamic from
3891 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3899 case R_PPC64_TPREL16
:
3900 case R_PPC64_TPREL16_LO
:
3901 case R_PPC64_TPREL16_HI
:
3902 case R_PPC64_TPREL16_HA
:
3903 case R_PPC64_TPREL16_DS
:
3904 case R_PPC64_TPREL16_LO_DS
:
3905 case R_PPC64_TPREL16_HIGH
:
3906 case R_PPC64_TPREL16_HIGHA
:
3907 case R_PPC64_TPREL16_HIGHER
:
3908 case R_PPC64_TPREL16_HIGHERA
:
3909 case R_PPC64_TPREL16_HIGHEST
:
3910 case R_PPC64_TPREL16_HIGHESTA
:
3911 case R_PPC64_TPREL64
:
3912 /* These relocations are relative but in a shared library the
3913 linker doesn't know the thread pointer base. */
3914 return bfd_link_dll (info
);
3918 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3919 copying dynamic variables from a shared lib into an app's dynbss
3920 section, and instead use a dynamic relocation to point into the
3921 shared lib. With code that gcc generates, it's vital that this be
3922 enabled; In the PowerPC64 ABI, the address of a function is actually
3923 the address of a function descriptor, which resides in the .opd
3924 section. gcc uses the descriptor directly rather than going via the
3925 GOT as some other ABI's do, which means that initialized function
3926 pointers must reference the descriptor. Thus, a function pointer
3927 initialized to the address of a function in a shared library will
3928 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3929 redefines the function descriptor symbol to point to the copy. This
3930 presents a problem as a plt entry for that function is also
3931 initialized from the function descriptor symbol and the copy reloc
3932 may not be initialized first. */
3933 #define ELIMINATE_COPY_RELOCS 1
3935 /* Section name for stubs is the associated section name plus this
3937 #define STUB_SUFFIX ".stub"
3940 ppc_stub_long_branch:
3941 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3942 destination, but a 24 bit branch in a stub section will reach.
3945 ppc_stub_plt_branch:
3946 Similar to the above, but a 24 bit branch in the stub section won't
3947 reach its destination.
3948 . addis %r11,%r2,xxx@toc@ha
3949 . ld %r12,xxx@toc@l(%r11)
3954 Used to call a function in a shared library. If it so happens that
3955 the plt entry referenced crosses a 64k boundary, then an extra
3956 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3958 . addis %r11,%r2,xxx@toc@ha
3959 . ld %r12,xxx+0@toc@l(%r11)
3961 . ld %r2,xxx+8@toc@l(%r11)
3962 . ld %r11,xxx+16@toc@l(%r11)
3965 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3966 code to adjust the value and save r2 to support multiple toc sections.
3967 A ppc_stub_long_branch with an r2 offset looks like:
3969 . addis %r2,%r2,off@ha
3970 . addi %r2,%r2,off@l
3973 A ppc_stub_plt_branch with an r2 offset looks like:
3975 . addis %r11,%r2,xxx@toc@ha
3976 . ld %r12,xxx@toc@l(%r11)
3977 . addis %r2,%r2,off@ha
3978 . addi %r2,%r2,off@l
3982 In cases where the "addis" instruction would add zero, the "addis" is
3983 omitted and following instructions modified slightly in some cases.
3986 enum ppc_stub_type
{
3988 ppc_stub_long_branch
,
3989 ppc_stub_long_branch_r2off
,
3990 ppc_stub_plt_branch
,
3991 ppc_stub_plt_branch_r2off
,
3993 ppc_stub_plt_call_r2save
,
3994 ppc_stub_global_entry
,
3998 /* Information on stub grouping. */
4001 /* The stub section. */
4003 /* This is the section to which stubs in the group will be attached. */
4006 struct map_stub
*next
;
4007 /* Whether to emit a copy of register save/restore functions in this
4010 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
4011 or -1u if no such stub with bctrl exists. */
4012 unsigned int tls_get_addr_opt_bctrl
;
4015 struct ppc_stub_hash_entry
{
4017 /* Base hash table entry structure. */
4018 struct bfd_hash_entry root
;
4020 enum ppc_stub_type stub_type
;
4022 /* Group information. */
4023 struct map_stub
*group
;
4025 /* Offset within stub_sec of the beginning of this stub. */
4026 bfd_vma stub_offset
;
4028 /* Given the symbol's value and its section we can determine its final
4029 value when building the stubs (so the stub knows where to jump. */
4030 bfd_vma target_value
;
4031 asection
*target_section
;
4033 /* The symbol table entry, if any, that this was derived from. */
4034 struct ppc_link_hash_entry
*h
;
4035 struct plt_entry
*plt_ent
;
4038 unsigned char symtype
;
4040 /* Symbol st_other. */
4041 unsigned char other
;
4044 struct ppc_branch_hash_entry
{
4046 /* Base hash table entry structure. */
4047 struct bfd_hash_entry root
;
4049 /* Offset within branch lookup table. */
4050 unsigned int offset
;
4052 /* Generation marker. */
4056 /* Used to track dynamic relocations for local symbols. */
4057 struct ppc_dyn_relocs
4059 struct ppc_dyn_relocs
*next
;
4061 /* The input section of the reloc. */
4064 /* Total number of relocs copied for the input section. */
4065 unsigned int count
: 31;
4067 /* Whether this entry is for STT_GNU_IFUNC symbols. */
4068 unsigned int ifunc
: 1;
4071 struct ppc_link_hash_entry
4073 struct elf_link_hash_entry elf
;
4076 /* A pointer to the most recently used stub hash entry against this
4078 struct ppc_stub_hash_entry
*stub_cache
;
4080 /* A pointer to the next symbol starting with a '.' */
4081 struct ppc_link_hash_entry
*next_dot_sym
;
4084 /* Track dynamic relocs copied for this symbol. */
4085 struct elf_dyn_relocs
*dyn_relocs
;
4087 /* Link between function code and descriptor symbols. */
4088 struct ppc_link_hash_entry
*oh
;
4090 /* Flag function code and descriptor symbols. */
4091 unsigned int is_func
:1;
4092 unsigned int is_func_descriptor
:1;
4093 unsigned int fake
:1;
4095 /* Whether global opd/toc sym has been adjusted or not.
4096 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4097 should be set for all globals defined in any opd/toc section. */
4098 unsigned int adjust_done
:1;
4100 /* Set if this is an out-of-line register save/restore function,
4101 with non-standard calling convention. */
4102 unsigned int save_res
:1;
4104 /* Set if a duplicate symbol with non-zero localentry is detected,
4105 even when the duplicate symbol does not provide a definition. */
4106 unsigned int non_zero_localentry
:1;
4108 /* Contexts in which symbol is used in the GOT (or TOC).
4109 Bits are or'd into the mask as the corresponding relocs are
4110 encountered during check_relocs, with TLS_TLS being set when any
4111 of the other TLS bits are set. tls_optimize clears bits when
4112 optimizing to indicate the corresponding GOT entry type is not
4113 needed. If set, TLS_TLS is never cleared. tls_optimize may also
4114 set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
4115 separate flag rather than setting TPREL just for convenience in
4116 distinguishing the two cases.
4117 These flags are also kept for local symbols. */
4118 #define TLS_TLS 1 /* Any TLS reloc. */
4119 #define TLS_GD 2 /* GD reloc. */
4120 #define TLS_LD 4 /* LD reloc. */
4121 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
4122 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
4123 #define TLS_MARK 32 /* __tls_get_addr call marked. */
4124 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4125 #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */
4126 unsigned char tls_mask
;
4128 /* The above field is also used to mark function symbols. In which
4129 case TLS_TLS will be 0. */
4130 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
4131 #define PLT_KEEP 4 /* inline plt call requires plt entry. */
4132 #define NON_GOT 256 /* local symbol plt, not stored. */
4135 /* ppc64 ELF linker hash table. */
4137 struct ppc_link_hash_table
4139 struct elf_link_hash_table elf
;
4141 /* The stub hash table. */
4142 struct bfd_hash_table stub_hash_table
;
4144 /* Another hash table for plt_branch stubs. */
4145 struct bfd_hash_table branch_hash_table
;
4147 /* Hash table for function prologue tocsave. */
4148 htab_t tocsave_htab
;
4150 /* Various options and other info passed from the linker. */
4151 struct ppc64_elf_params
*params
;
4153 /* The size of sec_info below. */
4154 unsigned int sec_info_arr_size
;
4156 /* Per-section array of extra section info. Done this way rather
4157 than as part of ppc64_elf_section_data so we have the info for
4158 non-ppc64 sections. */
4161 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4166 /* The section group that this section belongs to. */
4167 struct map_stub
*group
;
4168 /* A temp section list pointer. */
4173 /* Linked list of groups. */
4174 struct map_stub
*group
;
4176 /* Temp used when calculating TOC pointers. */
4179 asection
*toc_first_sec
;
4181 /* Used when adding symbols. */
4182 struct ppc_link_hash_entry
*dot_syms
;
4184 /* Shortcuts to get to dynamic linker sections. */
4186 asection
*global_entry
;
4189 asection
*relpltlocal
;
4192 asection
*glink_eh_frame
;
4194 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4195 struct ppc_link_hash_entry
*tls_get_addr
;
4196 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4198 /* The size of reliplt used by got entry relocs. */
4199 bfd_size_type got_reli_size
;
4202 unsigned long stub_count
[ppc_stub_global_entry
];
4204 /* Number of stubs against global syms. */
4205 unsigned long stub_globals
;
4207 /* Set if we're linking code with function descriptors. */
4208 unsigned int opd_abi
:1;
4210 /* Support for multiple toc sections. */
4211 unsigned int do_multi_toc
:1;
4212 unsigned int multi_toc_needed
:1;
4213 unsigned int second_toc_pass
:1;
4214 unsigned int do_toc_opt
:1;
4216 /* Set if tls optimization is enabled. */
4217 unsigned int do_tls_opt
:1;
4219 /* Set if inline plt calls should be converted to direct calls. */
4220 unsigned int can_convert_all_inline_plt
:1;
4223 unsigned int stub_error
:1;
4225 /* Whether func_desc_adjust needs to be run over symbols. */
4226 unsigned int need_func_desc_adj
:1;
4228 /* Whether there exist local gnu indirect function resolvers,
4229 referenced by dynamic relocations. */
4230 unsigned int local_ifunc_resolver
:1;
4231 unsigned int maybe_local_ifunc_resolver
:1;
4233 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4234 unsigned int has_plt_localentry0
:1;
4236 /* Incremented every time we size stubs. */
4237 unsigned int stub_iteration
;
4239 /* Small local sym cache. */
4240 struct sym_cache sym_cache
;
4243 /* Rename some of the generic section flags to better document how they
4246 /* Nonzero if this section has TLS related relocations. */
4247 #define has_tls_reloc sec_flg0
4249 /* Nonzero if this section has an old-style call to __tls_get_addr. */
4250 #define has_tls_get_addr_call sec_flg1
4252 /* Nonzero if this section has any toc or got relocs. */
4253 #define has_toc_reloc sec_flg2
4255 /* Nonzero if this section has a call to another section that uses
4257 #define makes_toc_func_call sec_flg3
4259 /* Recursion protection when determining above flag. */
4260 #define call_check_in_progress sec_flg4
4261 #define call_check_done sec_flg5
4263 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4265 #define ppc_hash_table(p) \
4266 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4267 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4269 #define ppc_stub_hash_lookup(table, string, create, copy) \
4270 ((struct ppc_stub_hash_entry *) \
4271 bfd_hash_lookup ((table), (string), (create), (copy)))
4273 #define ppc_branch_hash_lookup(table, string, create, copy) \
4274 ((struct ppc_branch_hash_entry *) \
4275 bfd_hash_lookup ((table), (string), (create), (copy)))
4277 /* Create an entry in the stub hash table. */
4279 static struct bfd_hash_entry
*
4280 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4281 struct bfd_hash_table
*table
,
4284 /* Allocate the structure if it has not already been allocated by a
4288 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4293 /* Call the allocation method of the superclass. */
4294 entry
= bfd_hash_newfunc (entry
, table
, string
);
4297 struct ppc_stub_hash_entry
*eh
;
4299 /* Initialize the local fields. */
4300 eh
= (struct ppc_stub_hash_entry
*) entry
;
4301 eh
->stub_type
= ppc_stub_none
;
4303 eh
->stub_offset
= 0;
4304 eh
->target_value
= 0;
4305 eh
->target_section
= NULL
;
4314 /* Create an entry in the branch hash table. */
4316 static struct bfd_hash_entry
*
4317 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4318 struct bfd_hash_table
*table
,
4321 /* Allocate the structure if it has not already been allocated by a
4325 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4330 /* Call the allocation method of the superclass. */
4331 entry
= bfd_hash_newfunc (entry
, table
, string
);
4334 struct ppc_branch_hash_entry
*eh
;
4336 /* Initialize the local fields. */
4337 eh
= (struct ppc_branch_hash_entry
*) entry
;
4345 /* Create an entry in a ppc64 ELF linker hash table. */
4347 static struct bfd_hash_entry
*
4348 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4349 struct bfd_hash_table
*table
,
4352 /* Allocate the structure if it has not already been allocated by a
4356 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4361 /* Call the allocation method of the superclass. */
4362 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4365 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4367 memset (&eh
->u
.stub_cache
, 0,
4368 (sizeof (struct ppc_link_hash_entry
)
4369 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4371 /* When making function calls, old ABI code references function entry
4372 points (dot symbols), while new ABI code references the function
4373 descriptor symbol. We need to make any combination of reference and
4374 definition work together, without breaking archive linking.
4376 For a defined function "foo" and an undefined call to "bar":
4377 An old object defines "foo" and ".foo", references ".bar" (possibly
4379 A new object defines "foo" and references "bar".
4381 A new object thus has no problem with its undefined symbols being
4382 satisfied by definitions in an old object. On the other hand, the
4383 old object won't have ".bar" satisfied by a new object.
4385 Keep a list of newly added dot-symbols. */
4387 if (string
[0] == '.')
4389 struct ppc_link_hash_table
*htab
;
4391 htab
= (struct ppc_link_hash_table
*) table
;
4392 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4393 htab
->dot_syms
= eh
;
4400 struct tocsave_entry
{
4406 tocsave_htab_hash (const void *p
)
4408 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4409 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4413 tocsave_htab_eq (const void *p1
, const void *p2
)
4415 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4416 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4417 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4420 /* Destroy a ppc64 ELF linker hash table. */
4423 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4425 struct ppc_link_hash_table
*htab
;
4427 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4428 if (htab
->tocsave_htab
)
4429 htab_delete (htab
->tocsave_htab
);
4430 bfd_hash_table_free (&htab
->branch_hash_table
);
4431 bfd_hash_table_free (&htab
->stub_hash_table
);
4432 _bfd_elf_link_hash_table_free (obfd
);
4435 /* Create a ppc64 ELF linker hash table. */
4437 static struct bfd_link_hash_table
*
4438 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4440 struct ppc_link_hash_table
*htab
;
4441 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4443 htab
= bfd_zmalloc (amt
);
4447 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4448 sizeof (struct ppc_link_hash_entry
),
4455 /* Init the stub hash table too. */
4456 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4457 sizeof (struct ppc_stub_hash_entry
)))
4459 _bfd_elf_link_hash_table_free (abfd
);
4463 /* And the branch hash table. */
4464 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4465 sizeof (struct ppc_branch_hash_entry
)))
4467 bfd_hash_table_free (&htab
->stub_hash_table
);
4468 _bfd_elf_link_hash_table_free (abfd
);
4472 htab
->tocsave_htab
= htab_try_create (1024,
4476 if (htab
->tocsave_htab
== NULL
)
4478 ppc64_elf_link_hash_table_free (abfd
);
4481 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4483 /* Initializing two fields of the union is just cosmetic. We really
4484 only care about glist, but when compiled on a 32-bit host the
4485 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4486 debugger inspection of these fields look nicer. */
4487 htab
->elf
.init_got_refcount
.refcount
= 0;
4488 htab
->elf
.init_got_refcount
.glist
= NULL
;
4489 htab
->elf
.init_plt_refcount
.refcount
= 0;
4490 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4491 htab
->elf
.init_got_offset
.offset
= 0;
4492 htab
->elf
.init_got_offset
.glist
= NULL
;
4493 htab
->elf
.init_plt_offset
.offset
= 0;
4494 htab
->elf
.init_plt_offset
.glist
= NULL
;
4496 return &htab
->elf
.root
;
4499 /* Create sections for linker generated code. */
4502 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4504 struct ppc_link_hash_table
*htab
;
4507 htab
= ppc_hash_table (info
);
4509 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4510 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4511 if (htab
->params
->save_restore_funcs
)
4513 /* Create .sfpr for code to save and restore fp regs. */
4514 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4516 if (htab
->sfpr
== NULL
4517 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4521 if (bfd_link_relocatable (info
))
4524 /* Create .glink for lazy dynamic linking support. */
4525 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4527 if (htab
->glink
== NULL
4528 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4531 /* The part of .glink used by global entry stubs, separate so that
4532 it can be aligned appropriately without affecting htab->glink. */
4533 htab
->global_entry
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4535 if (htab
->global_entry
== NULL
4536 || ! bfd_set_section_alignment (dynobj
, htab
->global_entry
, 2))
4539 if (!info
->no_ld_generated_unwind_info
)
4541 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4542 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4543 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4546 if (htab
->glink_eh_frame
== NULL
4547 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4551 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4552 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4553 if (htab
->elf
.iplt
== NULL
4554 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4557 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4558 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4560 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4561 if (htab
->elf
.irelplt
== NULL
4562 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4565 /* Create branch lookup table for plt_branch stubs. */
4566 flags
= (SEC_ALLOC
| SEC_LOAD
4567 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4568 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4570 if (htab
->brlt
== NULL
4571 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4574 /* Local plt entries, put in .branch_lt but a separate section for
4576 htab
->pltlocal
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4578 if (htab
->pltlocal
== NULL
4579 || ! bfd_set_section_alignment (dynobj
, htab
->pltlocal
, 3))
4582 if (!bfd_link_pic (info
))
4585 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4586 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4588 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.branch_lt", flags
);
4589 if (htab
->relbrlt
== NULL
4590 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4594 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.branch_lt", flags
);
4595 if (htab
->relpltlocal
== NULL
4596 || ! bfd_set_section_alignment (dynobj
, htab
->relpltlocal
, 3))
4602 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4605 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4606 struct ppc64_elf_params
*params
)
4608 struct ppc_link_hash_table
*htab
;
4610 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4612 /* Always hook our dynamic sections into the first bfd, which is the
4613 linker created stub bfd. This ensures that the GOT header is at
4614 the start of the output TOC section. */
4615 htab
= ppc_hash_table (info
);
4616 htab
->elf
.dynobj
= params
->stub_bfd
;
4617 htab
->params
= params
;
4619 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4622 /* Build a name for an entry in the stub hash table. */
4625 ppc_stub_name (const asection
*input_section
,
4626 const asection
*sym_sec
,
4627 const struct ppc_link_hash_entry
*h
,
4628 const Elf_Internal_Rela
*rel
)
4633 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4634 offsets from a sym as a branch target? In fact, we could
4635 probably assume the addend is always zero. */
4636 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4640 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4641 stub_name
= bfd_malloc (len
);
4642 if (stub_name
== NULL
)
4645 len
= sprintf (stub_name
, "%08x.%s+%x",
4646 input_section
->id
& 0xffffffff,
4647 h
->elf
.root
.root
.string
,
4648 (int) rel
->r_addend
& 0xffffffff);
4652 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4653 stub_name
= bfd_malloc (len
);
4654 if (stub_name
== NULL
)
4657 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4658 input_section
->id
& 0xffffffff,
4659 sym_sec
->id
& 0xffffffff,
4660 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4661 (int) rel
->r_addend
& 0xffffffff);
4663 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4664 stub_name
[len
- 2] = 0;
4668 /* Look up an entry in the stub hash. Stub entries are cached because
4669 creating the stub name takes a bit of time. */
4671 static struct ppc_stub_hash_entry
*
4672 ppc_get_stub_entry (const asection
*input_section
,
4673 const asection
*sym_sec
,
4674 struct ppc_link_hash_entry
*h
,
4675 const Elf_Internal_Rela
*rel
,
4676 struct ppc_link_hash_table
*htab
)
4678 struct ppc_stub_hash_entry
*stub_entry
;
4679 struct map_stub
*group
;
4681 /* If this input section is part of a group of sections sharing one
4682 stub section, then use the id of the first section in the group.
4683 Stub names need to include a section id, as there may well be
4684 more than one stub used to reach say, printf, and we need to
4685 distinguish between them. */
4686 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4690 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4691 && h
->u
.stub_cache
->h
== h
4692 && h
->u
.stub_cache
->group
== group
)
4694 stub_entry
= h
->u
.stub_cache
;
4700 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4701 if (stub_name
== NULL
)
4704 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4705 stub_name
, FALSE
, FALSE
);
4707 h
->u
.stub_cache
= stub_entry
;
4715 /* Add a new stub entry to the stub hash. Not all fields of the new
4716 stub entry are initialised. */
4718 static struct ppc_stub_hash_entry
*
4719 ppc_add_stub (const char *stub_name
,
4721 struct bfd_link_info
*info
)
4723 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4724 struct map_stub
*group
;
4727 struct ppc_stub_hash_entry
*stub_entry
;
4729 group
= htab
->sec_info
[section
->id
].u
.group
;
4730 link_sec
= group
->link_sec
;
4731 stub_sec
= group
->stub_sec
;
4732 if (stub_sec
== NULL
)
4738 namelen
= strlen (link_sec
->name
);
4739 len
= namelen
+ sizeof (STUB_SUFFIX
);
4740 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4744 memcpy (s_name
, link_sec
->name
, namelen
);
4745 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4746 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4747 if (stub_sec
== NULL
)
4749 group
->stub_sec
= stub_sec
;
4752 /* Enter this entry into the linker stub hash table. */
4753 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4755 if (stub_entry
== NULL
)
4757 /* xgettext:c-format */
4758 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4759 section
->owner
, stub_name
);
4763 stub_entry
->group
= group
;
4764 stub_entry
->stub_offset
= 0;
4768 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4769 not already done. */
4772 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4774 asection
*got
, *relgot
;
4776 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4778 if (!is_ppc64_elf (abfd
))
4784 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4787 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4788 | SEC_LINKER_CREATED
);
4790 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4792 || !bfd_set_section_alignment (abfd
, got
, 3))
4795 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4796 flags
| SEC_READONLY
);
4798 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4801 ppc64_elf_tdata (abfd
)->got
= got
;
4802 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4806 /* Follow indirect and warning symbol links. */
4808 static inline struct bfd_link_hash_entry
*
4809 follow_link (struct bfd_link_hash_entry
*h
)
4811 while (h
->type
== bfd_link_hash_indirect
4812 || h
->type
== bfd_link_hash_warning
)
4817 static inline struct elf_link_hash_entry
*
4818 elf_follow_link (struct elf_link_hash_entry
*h
)
4820 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4823 static inline struct ppc_link_hash_entry
*
4824 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4826 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4829 /* Merge PLT info on FROM with that on TO. */
4832 move_plt_plist (struct ppc_link_hash_entry
*from
,
4833 struct ppc_link_hash_entry
*to
)
4835 if (from
->elf
.plt
.plist
!= NULL
)
4837 if (to
->elf
.plt
.plist
!= NULL
)
4839 struct plt_entry
**entp
;
4840 struct plt_entry
*ent
;
4842 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4844 struct plt_entry
*dent
;
4846 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4847 if (dent
->addend
== ent
->addend
)
4849 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4856 *entp
= to
->elf
.plt
.plist
;
4859 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4860 from
->elf
.plt
.plist
= NULL
;
4864 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4867 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4868 struct elf_link_hash_entry
*dir
,
4869 struct elf_link_hash_entry
*ind
)
4871 struct ppc_link_hash_entry
*edir
, *eind
;
4873 edir
= (struct ppc_link_hash_entry
*) dir
;
4874 eind
= (struct ppc_link_hash_entry
*) ind
;
4876 edir
->is_func
|= eind
->is_func
;
4877 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4878 edir
->tls_mask
|= eind
->tls_mask
;
4879 if (eind
->oh
!= NULL
)
4880 edir
->oh
= ppc_follow_link (eind
->oh
);
4882 if (edir
->elf
.versioned
!= versioned_hidden
)
4883 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4884 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4885 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4886 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4887 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4888 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4890 /* If we were called to copy over info for a weak sym, don't copy
4891 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4892 in order to simplify readonly_dynrelocs and save a field in the
4893 symbol hash entry, but that means dyn_relocs can't be used in any
4894 tests about a specific symbol, or affect other symbol flags which
4896 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4899 /* Copy over any dynamic relocs we may have on the indirect sym. */
4900 if (eind
->dyn_relocs
!= NULL
)
4902 if (edir
->dyn_relocs
!= NULL
)
4904 struct elf_dyn_relocs
**pp
;
4905 struct elf_dyn_relocs
*p
;
4907 /* Add reloc counts against the indirect sym to the direct sym
4908 list. Merge any entries against the same section. */
4909 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4911 struct elf_dyn_relocs
*q
;
4913 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4914 if (q
->sec
== p
->sec
)
4916 q
->pc_count
+= p
->pc_count
;
4917 q
->count
+= p
->count
;
4924 *pp
= edir
->dyn_relocs
;
4927 edir
->dyn_relocs
= eind
->dyn_relocs
;
4928 eind
->dyn_relocs
= NULL
;
4931 /* Copy over got entries that we may have already seen to the
4932 symbol which just became indirect. */
4933 if (eind
->elf
.got
.glist
!= NULL
)
4935 if (edir
->elf
.got
.glist
!= NULL
)
4937 struct got_entry
**entp
;
4938 struct got_entry
*ent
;
4940 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4942 struct got_entry
*dent
;
4944 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4945 if (dent
->addend
== ent
->addend
4946 && dent
->owner
== ent
->owner
4947 && dent
->tls_type
== ent
->tls_type
)
4949 dent
->got
.refcount
+= ent
->got
.refcount
;
4956 *entp
= edir
->elf
.got
.glist
;
4959 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4960 eind
->elf
.got
.glist
= NULL
;
4963 /* And plt entries. */
4964 move_plt_plist (eind
, edir
);
4966 if (eind
->elf
.dynindx
!= -1)
4968 if (edir
->elf
.dynindx
!= -1)
4969 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4970 edir
->elf
.dynstr_index
);
4971 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4972 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4973 eind
->elf
.dynindx
= -1;
4974 eind
->elf
.dynstr_index
= 0;
4978 /* Find the function descriptor hash entry from the given function code
4979 hash entry FH. Link the entries via their OH fields. */
4981 static struct ppc_link_hash_entry
*
4982 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4984 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4988 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4990 fdh
= (struct ppc_link_hash_entry
*)
4991 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4995 fdh
->is_func_descriptor
= 1;
5001 fdh
= ppc_follow_link (fdh
);
5002 fdh
->is_func_descriptor
= 1;
5007 /* Make a fake function descriptor sym for the undefined code sym FH. */
5009 static struct ppc_link_hash_entry
*
5010 make_fdh (struct bfd_link_info
*info
,
5011 struct ppc_link_hash_entry
*fh
)
5013 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
5014 struct bfd_link_hash_entry
*bh
= NULL
;
5015 struct ppc_link_hash_entry
*fdh
;
5016 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5020 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
5021 fh
->elf
.root
.root
.string
+ 1,
5022 flags
, bfd_und_section_ptr
, 0,
5023 NULL
, FALSE
, FALSE
, &bh
))
5026 fdh
= (struct ppc_link_hash_entry
*) bh
;
5027 fdh
->elf
.non_elf
= 0;
5029 fdh
->is_func_descriptor
= 1;
5036 /* Fix function descriptor symbols defined in .opd sections to be
5040 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
5041 struct bfd_link_info
*info
,
5042 Elf_Internal_Sym
*isym
,
5044 flagword
*flags ATTRIBUTE_UNUSED
,
5049 && strcmp ((*sec
)->name
, ".opd") == 0)
5053 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
5054 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
5055 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
5057 /* If the symbol is a function defined in .opd, and the function
5058 code is in a discarded group, let it appear to be undefined. */
5059 if (!bfd_link_relocatable (info
)
5060 && (*sec
)->reloc_count
!= 0
5061 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
5062 FALSE
) != (bfd_vma
) -1
5063 && discarded_section (code_sec
))
5065 *sec
= bfd_und_section_ptr
;
5066 isym
->st_shndx
= SHN_UNDEF
;
5069 else if (*sec
!= NULL
5070 && strcmp ((*sec
)->name
, ".toc") == 0
5071 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
5073 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5075 htab
->params
->object_in_toc
= 1;
5078 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5080 if (abiversion (ibfd
) == 0)
5081 set_abiversion (ibfd
, 2);
5082 else if (abiversion (ibfd
) == 1)
5084 _bfd_error_handler (_("symbol '%s' has invalid st_other"
5085 " for ABI version 1"), *name
);
5086 bfd_set_error (bfd_error_bad_value
);
5094 /* Merge non-visibility st_other attributes: local entry point. */
5097 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5098 const Elf_Internal_Sym
*isym
,
5099 bfd_boolean definition
,
5100 bfd_boolean dynamic
)
5102 if (definition
&& (!dynamic
|| !h
->def_regular
))
5103 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5104 | ELF_ST_VISIBILITY (h
->other
));
5107 /* Hook called on merging a symbol. We use this to clear "fake" since
5108 we now have a real symbol. */
5111 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5112 const Elf_Internal_Sym
*isym
,
5113 asection
**psec ATTRIBUTE_UNUSED
,
5114 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5115 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5116 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5117 const asection
*oldsec ATTRIBUTE_UNUSED
)
5119 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5120 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5121 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5125 /* This function makes an old ABI object reference to ".bar" cause the
5126 inclusion of a new ABI object archive that defines "bar".
5127 NAME is a symbol defined in an archive. Return a symbol in the hash
5128 table that might be satisfied by the archive symbols. */
5130 static struct elf_link_hash_entry
*
5131 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5132 struct bfd_link_info
*info
,
5135 struct elf_link_hash_entry
*h
;
5139 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5141 /* Don't return this sym if it is a fake function descriptor
5142 created by add_symbol_adjust. */
5143 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5149 len
= strlen (name
);
5150 dot_name
= bfd_alloc (abfd
, len
+ 2);
5151 if (dot_name
== NULL
)
5152 return (struct elf_link_hash_entry
*) -1;
5154 memcpy (dot_name
+ 1, name
, len
+ 1);
5155 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5156 bfd_release (abfd
, dot_name
);
5160 /* This function satisfies all old ABI object references to ".bar" if a
5161 new ABI object defines "bar". Well, at least, undefined dot symbols
5162 are made weak. This stops later archive searches from including an
5163 object if we already have a function descriptor definition. It also
5164 prevents the linker complaining about undefined symbols.
5165 We also check and correct mismatched symbol visibility here. The
5166 most restrictive visibility of the function descriptor and the
5167 function entry symbol is used. */
5170 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5172 struct ppc_link_hash_table
*htab
;
5173 struct ppc_link_hash_entry
*fdh
;
5175 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5176 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5178 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5181 if (eh
->elf
.root
.root
.string
[0] != '.')
5184 htab
= ppc_hash_table (info
);
5188 fdh
= lookup_fdh (eh
, htab
);
5190 && !bfd_link_relocatable (info
)
5191 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5192 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5193 && eh
->elf
.ref_regular
)
5195 /* Make an undefined function descriptor sym, in order to
5196 pull in an --as-needed shared lib. Archives are handled
5198 fdh
= make_fdh (info
, eh
);
5205 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5206 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5208 /* Make both descriptor and entry symbol have the most
5209 constraining visibility of either symbol. */
5210 if (entry_vis
< descr_vis
)
5211 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5212 else if (entry_vis
> descr_vis
)
5213 eh
->elf
.other
+= descr_vis
- entry_vis
;
5215 /* Propagate reference flags from entry symbol to function
5216 descriptor symbol. */
5217 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5218 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5219 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5220 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5222 if (!fdh
->elf
.forced_local
5223 && fdh
->elf
.dynindx
== -1
5224 && fdh
->elf
.versioned
!= versioned_hidden
5225 && (bfd_link_dll (info
)
5226 || fdh
->elf
.def_dynamic
5227 || fdh
->elf
.ref_dynamic
)
5228 && (eh
->elf
.ref_regular
5229 || eh
->elf
.def_regular
))
5231 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5239 /* Set up opd section info and abiversion for IBFD, and process list
5240 of dot-symbols we made in link_hash_newfunc. */
5243 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5245 struct ppc_link_hash_table
*htab
;
5246 struct ppc_link_hash_entry
**p
, *eh
;
5247 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5249 if (opd
!= NULL
&& opd
->size
!= 0)
5251 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5252 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5254 if (abiversion (ibfd
) == 0)
5255 set_abiversion (ibfd
, 1);
5256 else if (abiversion (ibfd
) >= 2)
5258 /* xgettext:c-format */
5259 _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"),
5260 ibfd
, abiversion (ibfd
));
5261 bfd_set_error (bfd_error_bad_value
);
5266 if (is_ppc64_elf (info
->output_bfd
))
5268 /* For input files without an explicit abiversion in e_flags
5269 we should have flagged any with symbol st_other bits set
5270 as ELFv1 and above flagged those with .opd as ELFv2.
5271 Set the output abiversion if not yet set, and for any input
5272 still ambiguous, take its abiversion from the output.
5273 Differences in ABI are reported later. */
5274 if (abiversion (info
->output_bfd
) == 0)
5275 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5276 else if (abiversion (ibfd
) == 0)
5277 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5280 htab
= ppc_hash_table (info
);
5284 if (opd
!= NULL
&& opd
->size
!= 0
5285 && (ibfd
->flags
& DYNAMIC
) == 0
5286 && (opd
->flags
& SEC_RELOC
) != 0
5287 && opd
->reloc_count
!= 0
5288 && !bfd_is_abs_section (opd
->output_section
)
5289 && info
->gc_sections
)
5291 /* Garbage collection needs some extra help with .opd sections.
5292 We don't want to necessarily keep everything referenced by
5293 relocs in .opd, as that would keep all functions. Instead,
5294 if we reference an .opd symbol (a function descriptor), we
5295 want to keep the function code symbol's section. This is
5296 easy for global symbols, but for local syms we need to keep
5297 information about the associated function section. */
5299 asection
**opd_sym_map
;
5300 Elf_Internal_Shdr
*symtab_hdr
;
5301 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5303 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5304 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5305 if (opd_sym_map
== NULL
)
5307 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5308 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5312 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5313 rel_end
= relocs
+ opd
->reloc_count
- 1;
5314 for (rel
= relocs
; rel
< rel_end
; rel
++)
5316 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5317 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5319 if (r_type
== R_PPC64_ADDR64
5320 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5321 && r_symndx
< symtab_hdr
->sh_info
)
5323 Elf_Internal_Sym
*isym
;
5326 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5329 if (elf_section_data (opd
)->relocs
!= relocs
)
5334 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5335 if (s
!= NULL
&& s
!= opd
)
5336 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5339 if (elf_section_data (opd
)->relocs
!= relocs
)
5343 p
= &htab
->dot_syms
;
5344 while ((eh
= *p
) != NULL
)
5347 if (&eh
->elf
== htab
->elf
.hgot
)
5349 else if (htab
->elf
.hgot
== NULL
5350 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5351 htab
->elf
.hgot
= &eh
->elf
;
5352 else if (abiversion (ibfd
) <= 1)
5354 htab
->need_func_desc_adj
= 1;
5355 if (!add_symbol_adjust (eh
, info
))
5358 p
= &eh
->u
.next_dot_sym
;
5363 /* Undo hash table changes when an --as-needed input file is determined
5364 not to be needed. */
5367 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5368 struct bfd_link_info
*info
,
5369 enum notice_asneeded_action act
)
5371 if (act
== notice_not_needed
)
5373 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5378 htab
->dot_syms
= NULL
;
5380 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5383 /* If --just-symbols against a final linked binary, then assume we need
5384 toc adjusting stubs when calling functions defined there. */
5387 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5389 if ((sec
->flags
& SEC_CODE
) != 0
5390 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5391 && is_ppc64_elf (sec
->owner
))
5393 if (abiversion (sec
->owner
) >= 2
5394 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5395 sec
->has_toc_reloc
= 1;
5397 _bfd_elf_link_just_syms (sec
, info
);
5400 static struct plt_entry
**
5401 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5402 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5404 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5405 struct plt_entry
**local_plt
;
5406 unsigned char *local_got_tls_masks
;
5408 if (local_got_ents
== NULL
)
5410 bfd_size_type size
= symtab_hdr
->sh_info
;
5412 size
*= (sizeof (*local_got_ents
)
5413 + sizeof (*local_plt
)
5414 + sizeof (*local_got_tls_masks
));
5415 local_got_ents
= bfd_zalloc (abfd
, size
);
5416 if (local_got_ents
== NULL
)
5418 elf_local_got_ents (abfd
) = local_got_ents
;
5421 if ((tls_type
& (NON_GOT
| TLS_EXPLICIT
)) == 0)
5423 struct got_entry
*ent
;
5425 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5426 if (ent
->addend
== r_addend
5427 && ent
->owner
== abfd
5428 && ent
->tls_type
== tls_type
)
5432 bfd_size_type amt
= sizeof (*ent
);
5433 ent
= bfd_alloc (abfd
, amt
);
5436 ent
->next
= local_got_ents
[r_symndx
];
5437 ent
->addend
= r_addend
;
5439 ent
->tls_type
= tls_type
;
5440 ent
->is_indirect
= FALSE
;
5441 ent
->got
.refcount
= 0;
5442 local_got_ents
[r_symndx
] = ent
;
5444 ent
->got
.refcount
+= 1;
5447 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5448 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5449 local_got_tls_masks
[r_symndx
] |= tls_type
& 0xff;
5451 return local_plt
+ r_symndx
;
5455 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5457 struct plt_entry
*ent
;
5459 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5460 if (ent
->addend
== addend
)
5464 bfd_size_type amt
= sizeof (*ent
);
5465 ent
= bfd_alloc (abfd
, amt
);
5469 ent
->addend
= addend
;
5470 ent
->plt
.refcount
= 0;
5473 ent
->plt
.refcount
+= 1;
5478 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5480 return (r_type
== R_PPC64_REL24
5481 || r_type
== R_PPC64_REL14
5482 || r_type
== R_PPC64_REL14_BRTAKEN
5483 || r_type
== R_PPC64_REL14_BRNTAKEN
5484 || r_type
== R_PPC64_ADDR24
5485 || r_type
== R_PPC64_ADDR14
5486 || r_type
== R_PPC64_ADDR14_BRTAKEN
5487 || r_type
== R_PPC64_ADDR14_BRNTAKEN
5488 || r_type
== R_PPC64_PLTCALL
);
5491 /* Relocs on inline plt call sequence insns prior to the call. */
5494 is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type
)
5496 return (r_type
== R_PPC64_PLT16_HA
5497 || r_type
== R_PPC64_PLT16_HI
5498 || r_type
== R_PPC64_PLT16_LO
5499 || r_type
== R_PPC64_PLT16_LO_DS
5500 || r_type
== R_PPC64_PLTSEQ
);
5503 /* Look through the relocs for a section during the first phase, and
5504 calculate needed space in the global offset table, procedure
5505 linkage table, and dynamic reloc sections. */
5508 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5509 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5511 struct ppc_link_hash_table
*htab
;
5512 Elf_Internal_Shdr
*symtab_hdr
;
5513 struct elf_link_hash_entry
**sym_hashes
;
5514 const Elf_Internal_Rela
*rel
;
5515 const Elf_Internal_Rela
*rel_end
;
5517 struct elf_link_hash_entry
*tga
, *dottga
;
5520 if (bfd_link_relocatable (info
))
5523 /* Don't do anything special with non-loaded, non-alloced sections.
5524 In particular, any relocs in such sections should not affect GOT
5525 and PLT reference counting (ie. we don't allow them to create GOT
5526 or PLT entries), there's no possibility or desire to optimize TLS
5527 relocs, and there's not much point in propagating relocs to shared
5528 libs that the dynamic linker won't relocate. */
5529 if ((sec
->flags
& SEC_ALLOC
) == 0)
5532 BFD_ASSERT (is_ppc64_elf (abfd
));
5534 htab
= ppc_hash_table (info
);
5538 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5539 FALSE
, FALSE
, TRUE
);
5540 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5541 FALSE
, FALSE
, TRUE
);
5542 symtab_hdr
= &elf_symtab_hdr (abfd
);
5543 sym_hashes
= elf_sym_hashes (abfd
);
5545 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5546 rel_end
= relocs
+ sec
->reloc_count
;
5547 for (rel
= relocs
; rel
< rel_end
; rel
++)
5549 unsigned long r_symndx
;
5550 struct elf_link_hash_entry
*h
;
5551 enum elf_ppc64_reloc_type r_type
;
5553 struct _ppc64_elf_section_data
*ppc64_sec
;
5554 struct plt_entry
**ifunc
, **plt_list
;
5556 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5557 if (r_symndx
< symtab_hdr
->sh_info
)
5561 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5562 h
= elf_follow_link (h
);
5564 if (h
== htab
->elf
.hgot
)
5565 sec
->has_toc_reloc
= 1;
5572 if (h
->type
== STT_GNU_IFUNC
)
5575 ifunc
= &h
->plt
.plist
;
5580 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5585 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5587 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5589 NON_GOT
| PLT_IFUNC
);
5595 r_type
= ELF64_R_TYPE (rel
->r_info
);
5600 /* These special tls relocs tie a call to __tls_get_addr with
5601 its parameter symbol. */
5603 ((struct ppc_link_hash_entry
*) h
)->tls_mask
|= TLS_TLS
| TLS_MARK
;
5605 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5607 NON_GOT
| TLS_TLS
| TLS_MARK
))
5609 sec
->has_tls_reloc
= 1;
5612 case R_PPC64_GOT_TLSLD16
:
5613 case R_PPC64_GOT_TLSLD16_LO
:
5614 case R_PPC64_GOT_TLSLD16_HI
:
5615 case R_PPC64_GOT_TLSLD16_HA
:
5616 tls_type
= TLS_TLS
| TLS_LD
;
5619 case R_PPC64_GOT_TLSGD16
:
5620 case R_PPC64_GOT_TLSGD16_LO
:
5621 case R_PPC64_GOT_TLSGD16_HI
:
5622 case R_PPC64_GOT_TLSGD16_HA
:
5623 tls_type
= TLS_TLS
| TLS_GD
;
5626 case R_PPC64_GOT_TPREL16_DS
:
5627 case R_PPC64_GOT_TPREL16_LO_DS
:
5628 case R_PPC64_GOT_TPREL16_HI
:
5629 case R_PPC64_GOT_TPREL16_HA
:
5630 if (bfd_link_dll (info
))
5631 info
->flags
|= DF_STATIC_TLS
;
5632 tls_type
= TLS_TLS
| TLS_TPREL
;
5635 case R_PPC64_GOT_DTPREL16_DS
:
5636 case R_PPC64_GOT_DTPREL16_LO_DS
:
5637 case R_PPC64_GOT_DTPREL16_HI
:
5638 case R_PPC64_GOT_DTPREL16_HA
:
5639 tls_type
= TLS_TLS
| TLS_DTPREL
;
5641 sec
->has_tls_reloc
= 1;
5645 case R_PPC64_GOT16_DS
:
5646 case R_PPC64_GOT16_HA
:
5647 case R_PPC64_GOT16_HI
:
5648 case R_PPC64_GOT16_LO
:
5649 case R_PPC64_GOT16_LO_DS
:
5650 /* This symbol requires a global offset table entry. */
5651 sec
->has_toc_reloc
= 1;
5652 if (r_type
== R_PPC64_GOT_TLSLD16
5653 || r_type
== R_PPC64_GOT_TLSGD16
5654 || r_type
== R_PPC64_GOT_TPREL16_DS
5655 || r_type
== R_PPC64_GOT_DTPREL16_DS
5656 || r_type
== R_PPC64_GOT16
5657 || r_type
== R_PPC64_GOT16_DS
)
5659 htab
->do_multi_toc
= 1;
5660 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5663 if (ppc64_elf_tdata (abfd
)->got
== NULL
5664 && !create_got_section (abfd
, info
))
5669 struct ppc_link_hash_entry
*eh
;
5670 struct got_entry
*ent
;
5672 eh
= (struct ppc_link_hash_entry
*) h
;
5673 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5674 if (ent
->addend
== rel
->r_addend
5675 && ent
->owner
== abfd
5676 && ent
->tls_type
== tls_type
)
5680 bfd_size_type amt
= sizeof (*ent
);
5681 ent
= bfd_alloc (abfd
, amt
);
5684 ent
->next
= eh
->elf
.got
.glist
;
5685 ent
->addend
= rel
->r_addend
;
5687 ent
->tls_type
= tls_type
;
5688 ent
->is_indirect
= FALSE
;
5689 ent
->got
.refcount
= 0;
5690 eh
->elf
.got
.glist
= ent
;
5692 ent
->got
.refcount
+= 1;
5693 eh
->tls_mask
|= tls_type
;
5696 /* This is a global offset table entry for a local symbol. */
5697 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5698 rel
->r_addend
, tls_type
))
5701 /* We may also need a plt entry if the symbol turns out to be
5703 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5705 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5710 case R_PPC64_PLT16_HA
:
5711 case R_PPC64_PLT16_HI
:
5712 case R_PPC64_PLT16_LO
:
5713 case R_PPC64_PLT16_LO_DS
:
5716 /* This symbol requires a procedure linkage table entry. */
5721 if (h
->root
.root
.string
[0] == '.'
5722 && h
->root
.root
.string
[1] != '\0')
5723 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5724 ((struct ppc_link_hash_entry
*) h
)->tls_mask
|= PLT_KEEP
;
5725 plt_list
= &h
->plt
.plist
;
5727 if (plt_list
== NULL
)
5728 plt_list
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5730 NON_GOT
| PLT_KEEP
);
5731 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5735 /* The following relocations don't need to propagate the
5736 relocation if linking a shared object since they are
5737 section relative. */
5738 case R_PPC64_SECTOFF
:
5739 case R_PPC64_SECTOFF_LO
:
5740 case R_PPC64_SECTOFF_HI
:
5741 case R_PPC64_SECTOFF_HA
:
5742 case R_PPC64_SECTOFF_DS
:
5743 case R_PPC64_SECTOFF_LO_DS
:
5744 case R_PPC64_DTPREL16
:
5745 case R_PPC64_DTPREL16_LO
:
5746 case R_PPC64_DTPREL16_HI
:
5747 case R_PPC64_DTPREL16_HA
:
5748 case R_PPC64_DTPREL16_DS
:
5749 case R_PPC64_DTPREL16_LO_DS
:
5750 case R_PPC64_DTPREL16_HIGH
:
5751 case R_PPC64_DTPREL16_HIGHA
:
5752 case R_PPC64_DTPREL16_HIGHER
:
5753 case R_PPC64_DTPREL16_HIGHERA
:
5754 case R_PPC64_DTPREL16_HIGHEST
:
5755 case R_PPC64_DTPREL16_HIGHESTA
:
5760 case R_PPC64_REL16_LO
:
5761 case R_PPC64_REL16_HI
:
5762 case R_PPC64_REL16_HA
:
5763 case R_PPC64_REL16DX_HA
:
5766 /* Not supported as a dynamic relocation. */
5767 case R_PPC64_ADDR64_LOCAL
:
5768 if (bfd_link_pic (info
))
5770 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5772 /* xgettext:c-format */
5773 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5774 "in shared libraries and PIEs\n"),
5775 abfd
, sec
, rel
->r_offset
,
5776 ppc64_elf_howto_table
[r_type
]->name
);
5777 bfd_set_error (bfd_error_bad_value
);
5783 case R_PPC64_TOC16_DS
:
5784 htab
->do_multi_toc
= 1;
5785 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5787 case R_PPC64_TOC16_LO
:
5788 case R_PPC64_TOC16_HI
:
5789 case R_PPC64_TOC16_HA
:
5790 case R_PPC64_TOC16_LO_DS
:
5791 sec
->has_toc_reloc
= 1;
5798 /* This relocation describes the C++ object vtable hierarchy.
5799 Reconstruct it for later use during GC. */
5800 case R_PPC64_GNU_VTINHERIT
:
5801 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5805 /* This relocation describes which C++ vtable entries are actually
5806 used. Record for later use during GC. */
5807 case R_PPC64_GNU_VTENTRY
:
5808 BFD_ASSERT (h
!= NULL
);
5810 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5815 case R_PPC64_REL14_BRTAKEN
:
5816 case R_PPC64_REL14_BRNTAKEN
:
5818 asection
*dest
= NULL
;
5820 /* Heuristic: If jumping outside our section, chances are
5821 we are going to need a stub. */
5824 /* If the sym is weak it may be overridden later, so
5825 don't assume we know where a weak sym lives. */
5826 if (h
->root
.type
== bfd_link_hash_defined
)
5827 dest
= h
->root
.u
.def
.section
;
5831 Elf_Internal_Sym
*isym
;
5833 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5838 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5842 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5846 case R_PPC64_PLTCALL
:
5847 ppc64_elf_section_data (sec
)->has_pltcall
= 1;
5856 if (h
->root
.root
.string
[0] == '.'
5857 && h
->root
.root
.string
[1] != '\0')
5858 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5860 if (h
== tga
|| h
== dottga
)
5862 sec
->has_tls_reloc
= 1;
5864 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5865 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5866 /* We have a new-style __tls_get_addr call with
5870 /* Mark this section as having an old-style call. */
5871 sec
->has_tls_get_addr_call
= 1;
5873 plt_list
= &h
->plt
.plist
;
5876 /* We may need a .plt entry if the function this reloc
5877 refers to is in a shared lib. */
5879 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5883 case R_PPC64_ADDR14
:
5884 case R_PPC64_ADDR14_BRNTAKEN
:
5885 case R_PPC64_ADDR14_BRTAKEN
:
5886 case R_PPC64_ADDR24
:
5889 case R_PPC64_TPREL64
:
5890 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5891 if (bfd_link_dll (info
))
5892 info
->flags
|= DF_STATIC_TLS
;
5895 case R_PPC64_DTPMOD64
:
5896 if (rel
+ 1 < rel_end
5897 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5898 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5899 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5901 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5904 case R_PPC64_DTPREL64
:
5905 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5907 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5908 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5909 /* This is the second reloc of a dtpmod, dtprel pair.
5910 Don't mark with TLS_DTPREL. */
5914 sec
->has_tls_reloc
= 1;
5917 struct ppc_link_hash_entry
*eh
;
5918 eh
= (struct ppc_link_hash_entry
*) h
;
5919 eh
->tls_mask
|= tls_type
;
5922 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5923 rel
->r_addend
, tls_type
))
5926 ppc64_sec
= ppc64_elf_section_data (sec
);
5927 if (ppc64_sec
->sec_type
!= sec_toc
)
5931 /* One extra to simplify get_tls_mask. */
5932 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5933 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5934 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5936 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5937 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5938 if (ppc64_sec
->u
.toc
.add
== NULL
)
5940 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5941 ppc64_sec
->sec_type
= sec_toc
;
5943 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5944 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5945 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5947 /* Mark the second slot of a GD or LD entry.
5948 -1 to indicate GD and -2 to indicate LD. */
5949 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5950 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5951 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5952 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5955 case R_PPC64_TPREL16
:
5956 case R_PPC64_TPREL16_LO
:
5957 case R_PPC64_TPREL16_HI
:
5958 case R_PPC64_TPREL16_HA
:
5959 case R_PPC64_TPREL16_DS
:
5960 case R_PPC64_TPREL16_LO_DS
:
5961 case R_PPC64_TPREL16_HIGH
:
5962 case R_PPC64_TPREL16_HIGHA
:
5963 case R_PPC64_TPREL16_HIGHER
:
5964 case R_PPC64_TPREL16_HIGHERA
:
5965 case R_PPC64_TPREL16_HIGHEST
:
5966 case R_PPC64_TPREL16_HIGHESTA
:
5967 if (bfd_link_dll (info
))
5968 info
->flags
|= DF_STATIC_TLS
;
5971 case R_PPC64_ADDR64
:
5973 && rel
+ 1 < rel_end
5974 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5977 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5981 case R_PPC64_ADDR16
:
5982 case R_PPC64_ADDR16_DS
:
5983 case R_PPC64_ADDR16_HA
:
5984 case R_PPC64_ADDR16_HI
:
5985 case R_PPC64_ADDR16_HIGH
:
5986 case R_PPC64_ADDR16_HIGHA
:
5987 case R_PPC64_ADDR16_HIGHER
:
5988 case R_PPC64_ADDR16_HIGHERA
:
5989 case R_PPC64_ADDR16_HIGHEST
:
5990 case R_PPC64_ADDR16_HIGHESTA
:
5991 case R_PPC64_ADDR16_LO
:
5992 case R_PPC64_ADDR16_LO_DS
:
5993 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5994 && rel
->r_addend
== 0)
5996 /* We may need a .plt entry if this reloc refers to a
5997 function in a shared lib. */
5998 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
6000 h
->pointer_equality_needed
= 1;
6007 case R_PPC64_ADDR32
:
6008 case R_PPC64_UADDR16
:
6009 case R_PPC64_UADDR32
:
6010 case R_PPC64_UADDR64
:
6012 if (h
!= NULL
&& !bfd_link_pic (info
))
6013 /* We may need a copy reloc. */
6016 /* Don't propagate .opd relocs. */
6017 if (NO_OPD_RELOCS
&& is_opd
)
6020 /* If we are creating a shared library, and this is a reloc
6021 against a global symbol, or a non PC relative reloc
6022 against a local symbol, then we need to copy the reloc
6023 into the shared library. However, if we are linking with
6024 -Bsymbolic, we do not need to copy a reloc against a
6025 global symbol which is defined in an object we are
6026 including in the link (i.e., DEF_REGULAR is set). At
6027 this point we have not seen all the input files, so it is
6028 possible that DEF_REGULAR is not set now but will be set
6029 later (it is never cleared). In case of a weak definition,
6030 DEF_REGULAR may be cleared later by a strong definition in
6031 a shared library. We account for that possibility below by
6032 storing information in the dyn_relocs field of the hash
6033 table entry. A similar situation occurs when creating
6034 shared libraries and symbol visibility changes render the
6037 If on the other hand, we are creating an executable, we
6038 may need to keep relocations for symbols satisfied by a
6039 dynamic library if we manage to avoid copy relocs for the
6042 if ((bfd_link_pic (info
)
6043 && (must_be_dyn_reloc (info
, r_type
)
6045 && (!SYMBOLIC_BIND (info
, h
)
6046 || h
->root
.type
== bfd_link_hash_defweak
6047 || !h
->def_regular
))))
6048 || (ELIMINATE_COPY_RELOCS
6049 && !bfd_link_pic (info
)
6051 && (h
->root
.type
== bfd_link_hash_defweak
6052 || !h
->def_regular
))
6053 || (!bfd_link_pic (info
)
6056 /* We must copy these reloc types into the output file.
6057 Create a reloc section in dynobj and make room for
6061 sreloc
= _bfd_elf_make_dynamic_reloc_section
6062 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
6068 /* If this is a global symbol, we count the number of
6069 relocations we need for this symbol. */
6072 struct elf_dyn_relocs
*p
;
6073 struct elf_dyn_relocs
**head
;
6075 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6077 if (p
== NULL
|| p
->sec
!= sec
)
6079 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6089 if (!must_be_dyn_reloc (info
, r_type
))
6094 /* Track dynamic relocs needed for local syms too.
6095 We really need local syms available to do this
6097 struct ppc_dyn_relocs
*p
;
6098 struct ppc_dyn_relocs
**head
;
6099 bfd_boolean is_ifunc
;
6102 Elf_Internal_Sym
*isym
;
6104 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6109 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6113 vpp
= &elf_section_data (s
)->local_dynrel
;
6114 head
= (struct ppc_dyn_relocs
**) vpp
;
6115 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6117 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6119 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6121 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6127 p
->ifunc
= is_ifunc
;
6143 /* Merge backend specific data from an object file to the output
6144 object file when linking. */
6147 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6149 bfd
*obfd
= info
->output_bfd
;
6150 unsigned long iflags
, oflags
;
6152 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6155 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6158 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6161 iflags
= elf_elfheader (ibfd
)->e_flags
;
6162 oflags
= elf_elfheader (obfd
)->e_flags
;
6164 if (iflags
& ~EF_PPC64_ABI
)
6167 /* xgettext:c-format */
6168 (_("%pB uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6169 bfd_set_error (bfd_error_bad_value
);
6172 else if (iflags
!= oflags
&& iflags
!= 0)
6175 /* xgettext:c-format */
6176 (_("%pB: ABI version %ld is not compatible with ABI version %ld output"),
6177 ibfd
, iflags
, oflags
);
6178 bfd_set_error (bfd_error_bad_value
);
6182 if (!_bfd_elf_ppc_merge_fp_attributes (ibfd
, info
))
6185 /* Merge Tag_compatibility attributes and any common GNU ones. */
6186 return _bfd_elf_merge_object_attributes (ibfd
, info
);
6190 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6192 /* Print normal ELF private data. */
6193 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6195 if (elf_elfheader (abfd
)->e_flags
!= 0)
6199 fprintf (file
, _("private flags = 0x%lx:"),
6200 elf_elfheader (abfd
)->e_flags
);
6202 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6203 fprintf (file
, _(" [abiv%ld]"),
6204 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6211 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6212 of the code entry point, and its section, which must be in the same
6213 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6216 opd_entry_value (asection
*opd_sec
,
6218 asection
**code_sec
,
6220 bfd_boolean in_code_sec
)
6222 bfd
*opd_bfd
= opd_sec
->owner
;
6223 Elf_Internal_Rela
*relocs
;
6224 Elf_Internal_Rela
*lo
, *hi
, *look
;
6227 /* No relocs implies we are linking a --just-symbols object, or looking
6228 at a final linked executable with addr2line or somesuch. */
6229 if (opd_sec
->reloc_count
== 0)
6231 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6233 if (contents
== NULL
)
6235 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6236 return (bfd_vma
) -1;
6237 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6240 /* PR 17512: file: 64b9dfbb. */
6241 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6242 return (bfd_vma
) -1;
6244 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6245 if (code_sec
!= NULL
)
6247 asection
*sec
, *likely
= NULL
;
6253 && val
< sec
->vma
+ sec
->size
)
6259 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6261 && (sec
->flags
& SEC_LOAD
) != 0
6262 && (sec
->flags
& SEC_ALLOC
) != 0)
6267 if (code_off
!= NULL
)
6268 *code_off
= val
- likely
->vma
;
6274 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6276 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6278 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6279 /* PR 17512: file: df8e1fd6. */
6281 return (bfd_vma
) -1;
6283 /* Go find the opd reloc at the sym address. */
6285 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6289 look
= lo
+ (hi
- lo
) / 2;
6290 if (look
->r_offset
< offset
)
6292 else if (look
->r_offset
> offset
)
6296 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6298 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6299 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6301 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6302 asection
*sec
= NULL
;
6304 if (symndx
>= symtab_hdr
->sh_info
6305 && elf_sym_hashes (opd_bfd
) != NULL
)
6307 struct elf_link_hash_entry
**sym_hashes
;
6308 struct elf_link_hash_entry
*rh
;
6310 sym_hashes
= elf_sym_hashes (opd_bfd
);
6311 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6314 rh
= elf_follow_link (rh
);
6315 if (rh
->root
.type
!= bfd_link_hash_defined
6316 && rh
->root
.type
!= bfd_link_hash_defweak
)
6318 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6320 val
= rh
->root
.u
.def
.value
;
6321 sec
= rh
->root
.u
.def
.section
;
6328 Elf_Internal_Sym
*sym
;
6330 if (symndx
< symtab_hdr
->sh_info
)
6332 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6335 size_t symcnt
= symtab_hdr
->sh_info
;
6336 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6341 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6347 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6353 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6356 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6357 val
= sym
->st_value
;
6360 val
+= look
->r_addend
;
6361 if (code_off
!= NULL
)
6363 if (code_sec
!= NULL
)
6365 if (in_code_sec
&& *code_sec
!= sec
)
6370 if (sec
->output_section
!= NULL
)
6371 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6380 /* If the ELF symbol SYM might be a function in SEC, return the
6381 function size and set *CODE_OFF to the function's entry point,
6382 otherwise return zero. */
6384 static bfd_size_type
6385 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6390 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6391 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6395 if (!(sym
->flags
& BSF_SYNTHETIC
))
6396 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6398 if (strcmp (sym
->section
->name
, ".opd") == 0)
6400 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6401 bfd_vma symval
= sym
->value
;
6404 && opd
->adjust
!= NULL
6405 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6407 /* opd_entry_value will use cached relocs that have been
6408 adjusted, but with raw symbols. That means both local
6409 and global symbols need adjusting. */
6410 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6416 if (opd_entry_value (sym
->section
, symval
,
6417 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6419 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6420 symbol. This size has nothing to do with the code size of the
6421 function, which is what we're supposed to return, but the
6422 code size isn't available without looking up the dot-sym.
6423 However, doing that would be a waste of time particularly
6424 since elf_find_function will look at the dot-sym anyway.
6425 Now, elf_find_function will keep the largest size of any
6426 function sym found at the code address of interest, so return
6427 1 here to avoid it incorrectly caching a larger function size
6428 for a small function. This does mean we return the wrong
6429 size for a new-ABI function of size 24, but all that does is
6430 disable caching for such functions. */
6436 if (sym
->section
!= sec
)
6438 *code_off
= sym
->value
;
6445 /* Return true if symbol is a strong function defined in an ELFv2
6446 object with st_other localentry bits of zero, ie. its local entry
6447 point coincides with its global entry point. */
6450 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6453 && h
->type
== STT_FUNC
6454 && h
->root
.type
== bfd_link_hash_defined
6455 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6456 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6457 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6458 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6461 /* Return true if symbol is defined in a regular object file. */
6464 is_static_defined (struct elf_link_hash_entry
*h
)
6466 return ((h
->root
.type
== bfd_link_hash_defined
6467 || h
->root
.type
== bfd_link_hash_defweak
)
6468 && h
->root
.u
.def
.section
!= NULL
6469 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6472 /* If FDH is a function descriptor symbol, return the associated code
6473 entry symbol if it is defined. Return NULL otherwise. */
6475 static struct ppc_link_hash_entry
*
6476 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6478 if (fdh
->is_func_descriptor
)
6480 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6481 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6482 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6488 /* If FH is a function code entry symbol, return the associated
6489 function descriptor symbol if it is defined. Return NULL otherwise. */
6491 static struct ppc_link_hash_entry
*
6492 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6495 && fh
->oh
->is_func_descriptor
)
6497 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6498 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6499 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6505 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6507 /* Garbage collect sections, after first dealing with dot-symbols. */
6510 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6512 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6514 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6516 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6517 htab
->need_func_desc_adj
= 0;
6519 return bfd_elf_gc_sections (abfd
, info
);
6522 /* Mark all our entry sym sections, both opd and code section. */
6525 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6527 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6528 struct bfd_sym_chain
*sym
;
6533 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6535 struct ppc_link_hash_entry
*eh
, *fh
;
6538 eh
= (struct ppc_link_hash_entry
*)
6539 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6542 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6543 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6546 fh
= defined_code_entry (eh
);
6549 sec
= fh
->elf
.root
.u
.def
.section
;
6550 sec
->flags
|= SEC_KEEP
;
6552 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6553 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6554 eh
->elf
.root
.u
.def
.value
,
6555 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6556 sec
->flags
|= SEC_KEEP
;
6558 sec
= eh
->elf
.root
.u
.def
.section
;
6559 sec
->flags
|= SEC_KEEP
;
6563 /* Mark sections containing dynamically referenced symbols. When
6564 building shared libraries, we must assume that any visible symbol is
6568 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6570 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6571 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6572 struct ppc_link_hash_entry
*fdh
;
6573 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6575 /* Dynamic linking info is on the func descriptor sym. */
6576 fdh
= defined_func_desc (eh
);
6580 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6581 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6582 && ((eh
->elf
.ref_dynamic
&& !eh
->elf
.forced_local
)
6583 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6584 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6585 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6586 && (!bfd_link_executable (info
)
6587 || info
->gc_keep_exported
6588 || info
->export_dynamic
6591 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6592 && (eh
->elf
.versioned
>= versioned
6593 || !bfd_hide_sym_by_version (info
->version_info
,
6594 eh
->elf
.root
.root
.string
)))))
6597 struct ppc_link_hash_entry
*fh
;
6599 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6601 /* Function descriptor syms cause the associated
6602 function code sym section to be marked. */
6603 fh
= defined_code_entry (eh
);
6606 code_sec
= fh
->elf
.root
.u
.def
.section
;
6607 code_sec
->flags
|= SEC_KEEP
;
6609 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6610 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6611 eh
->elf
.root
.u
.def
.value
,
6612 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6613 code_sec
->flags
|= SEC_KEEP
;
6619 /* Return the section that should be marked against GC for a given
6623 ppc64_elf_gc_mark_hook (asection
*sec
,
6624 struct bfd_link_info
*info
,
6625 Elf_Internal_Rela
*rel
,
6626 struct elf_link_hash_entry
*h
,
6627 Elf_Internal_Sym
*sym
)
6631 /* Syms return NULL if we're marking .opd, so we avoid marking all
6632 function sections, as all functions are referenced in .opd. */
6634 if (get_opd_info (sec
) != NULL
)
6639 enum elf_ppc64_reloc_type r_type
;
6640 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6642 r_type
= ELF64_R_TYPE (rel
->r_info
);
6645 case R_PPC64_GNU_VTINHERIT
:
6646 case R_PPC64_GNU_VTENTRY
:
6650 switch (h
->root
.type
)
6652 case bfd_link_hash_defined
:
6653 case bfd_link_hash_defweak
:
6654 eh
= (struct ppc_link_hash_entry
*) h
;
6655 fdh
= defined_func_desc (eh
);
6658 /* -mcall-aixdesc code references the dot-symbol on
6659 a call reloc. Mark the function descriptor too
6660 against garbage collection. */
6662 if (fdh
->elf
.is_weakalias
)
6663 weakdef (&fdh
->elf
)->mark
= 1;
6667 /* Function descriptor syms cause the associated
6668 function code sym section to be marked. */
6669 fh
= defined_code_entry (eh
);
6672 /* They also mark their opd section. */
6673 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6675 rsec
= fh
->elf
.root
.u
.def
.section
;
6677 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6678 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6679 eh
->elf
.root
.u
.def
.value
,
6680 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6681 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6683 rsec
= h
->root
.u
.def
.section
;
6686 case bfd_link_hash_common
:
6687 rsec
= h
->root
.u
.c
.p
->section
;
6691 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6697 struct _opd_sec_data
*opd
;
6699 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6700 opd
= get_opd_info (rsec
);
6701 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6705 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6712 /* The maximum size of .sfpr. */
6713 #define SFPR_MAX (218*4)
6715 struct sfpr_def_parms
6717 const char name
[12];
6718 unsigned char lo
, hi
;
6719 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6720 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6723 /* Auto-generate _save*, _rest* functions in .sfpr.
6724 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6728 sfpr_define (struct bfd_link_info
*info
,
6729 const struct sfpr_def_parms
*parm
,
6732 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6734 size_t len
= strlen (parm
->name
);
6735 bfd_boolean writing
= FALSE
;
6741 memcpy (sym
, parm
->name
, len
);
6744 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6746 struct ppc_link_hash_entry
*h
;
6748 sym
[len
+ 0] = i
/ 10 + '0';
6749 sym
[len
+ 1] = i
% 10 + '0';
6750 h
= (struct ppc_link_hash_entry
*)
6751 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6752 if (stub_sec
!= NULL
)
6755 && h
->elf
.root
.type
== bfd_link_hash_defined
6756 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6758 struct elf_link_hash_entry
*s
;
6760 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6761 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6764 if (s
->root
.type
== bfd_link_hash_new
6765 || (s
->root
.type
= bfd_link_hash_defined
6766 && s
->root
.u
.def
.section
== stub_sec
))
6768 s
->root
.type
= bfd_link_hash_defined
;
6769 s
->root
.u
.def
.section
= stub_sec
;
6770 s
->root
.u
.def
.value
= (stub_sec
->size
- htab
->sfpr
->size
6771 + h
->elf
.root
.u
.def
.value
);
6774 s
->ref_regular_nonweak
= 1;
6775 s
->forced_local
= 1;
6777 s
->root
.linker_def
= 1;
6785 if (!h
->elf
.def_regular
)
6787 h
->elf
.root
.type
= bfd_link_hash_defined
;
6788 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6789 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6790 h
->elf
.type
= STT_FUNC
;
6791 h
->elf
.def_regular
= 1;
6793 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6795 if (htab
->sfpr
->contents
== NULL
)
6797 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6798 if (htab
->sfpr
->contents
== NULL
)
6805 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6807 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6809 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6810 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6818 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6820 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6825 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6827 p
= savegpr0 (abfd
, p
, r
);
6828 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6830 bfd_put_32 (abfd
, BLR
, p
);
6835 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6837 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6842 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6844 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6846 p
= restgpr0 (abfd
, p
, r
);
6847 bfd_put_32 (abfd
, MTLR_R0
, p
);
6851 p
= restgpr0 (abfd
, p
, 30);
6852 p
= restgpr0 (abfd
, p
, 31);
6854 bfd_put_32 (abfd
, BLR
, p
);
6859 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6861 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6866 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6868 p
= savegpr1 (abfd
, p
, r
);
6869 bfd_put_32 (abfd
, BLR
, p
);
6874 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6876 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6881 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6883 p
= restgpr1 (abfd
, p
, r
);
6884 bfd_put_32 (abfd
, BLR
, p
);
6889 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6891 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6896 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6898 p
= savefpr (abfd
, p
, r
);
6899 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6901 bfd_put_32 (abfd
, BLR
, p
);
6906 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6908 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6913 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6915 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6917 p
= restfpr (abfd
, p
, r
);
6918 bfd_put_32 (abfd
, MTLR_R0
, p
);
6922 p
= restfpr (abfd
, p
, 30);
6923 p
= restfpr (abfd
, p
, 31);
6925 bfd_put_32 (abfd
, BLR
, p
);
6930 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6932 p
= savefpr (abfd
, p
, r
);
6933 bfd_put_32 (abfd
, BLR
, p
);
6938 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6940 p
= restfpr (abfd
, p
, r
);
6941 bfd_put_32 (abfd
, BLR
, p
);
6946 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6948 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6950 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6955 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6957 p
= savevr (abfd
, p
, r
);
6958 bfd_put_32 (abfd
, BLR
, p
);
6963 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6965 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6967 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6972 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6974 p
= restvr (abfd
, p
, r
);
6975 bfd_put_32 (abfd
, BLR
, p
);
6979 /* Called via elf_link_hash_traverse to transfer dynamic linking
6980 information on function code symbol entries to their corresponding
6981 function descriptor symbol entries. */
6984 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6986 struct bfd_link_info
*info
;
6987 struct ppc_link_hash_table
*htab
;
6988 struct ppc_link_hash_entry
*fh
;
6989 struct ppc_link_hash_entry
*fdh
;
6990 bfd_boolean force_local
;
6992 fh
= (struct ppc_link_hash_entry
*) h
;
6993 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6999 if (fh
->elf
.root
.root
.string
[0] != '.'
7000 || fh
->elf
.root
.root
.string
[1] == '\0')
7004 htab
= ppc_hash_table (info
);
7008 /* Find the corresponding function descriptor symbol. */
7009 fdh
= lookup_fdh (fh
, htab
);
7011 /* Resolve undefined references to dot-symbols as the value
7012 in the function descriptor, if we have one in a regular object.
7013 This is to satisfy cases like ".quad .foo". Calls to functions
7014 in dynamic objects are handled elsewhere. */
7015 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7016 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7017 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7018 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7019 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7020 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7021 fdh
->elf
.root
.u
.def
.value
,
7022 &fh
->elf
.root
.u
.def
.section
,
7023 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7025 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7026 fh
->elf
.forced_local
= 1;
7027 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7028 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7031 if (!fh
->elf
.dynamic
)
7033 struct plt_entry
*ent
;
7035 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7036 if (ent
->plt
.refcount
> 0)
7042 /* Create a descriptor as undefined if necessary. */
7044 && !bfd_link_executable (info
)
7045 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7046 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7048 fdh
= make_fdh (info
, fh
);
7053 /* We can't support overriding of symbols on a fake descriptor. */
7056 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7057 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7058 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7060 /* Transfer dynamic linking information to the function descriptor. */
7063 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7064 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7065 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7066 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7067 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7068 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7069 || fh
->elf
.type
== STT_FUNC
7070 || fh
->elf
.type
== STT_GNU_IFUNC
);
7071 move_plt_plist (fh
, fdh
);
7073 if (!fdh
->elf
.forced_local
7074 && fh
->elf
.dynindx
!= -1)
7075 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7079 /* Now that the info is on the function descriptor, clear the
7080 function code sym info. Any function code syms for which we
7081 don't have a definition in a regular file, we force local.
7082 This prevents a shared library from exporting syms that have
7083 been imported from another library. Function code syms that
7084 are really in the library we must leave global to prevent the
7085 linker dragging in a definition from a static library. */
7086 force_local
= (!fh
->elf
.def_regular
7088 || !fdh
->elf
.def_regular
7089 || fdh
->elf
.forced_local
);
7090 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7095 static const struct sfpr_def_parms save_res_funcs
[] =
7097 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7098 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7099 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7100 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7101 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7102 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7103 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7104 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7105 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7106 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7107 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7108 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7111 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7112 this hook to a) provide some gcc support functions, and b) transfer
7113 dynamic linking information gathered so far on function code symbol
7114 entries, to their corresponding function descriptor symbol entries. */
7117 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7118 struct bfd_link_info
*info
)
7120 struct ppc_link_hash_table
*htab
;
7122 htab
= ppc_hash_table (info
);
7126 /* Provide any missing _save* and _rest* functions. */
7127 if (htab
->sfpr
!= NULL
)
7131 htab
->sfpr
->size
= 0;
7132 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7133 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7135 if (htab
->sfpr
->size
== 0)
7136 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7139 if (bfd_link_relocatable (info
))
7142 if (htab
->elf
.hgot
!= NULL
)
7144 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7145 /* Make .TOC. defined so as to prevent it being made dynamic.
7146 The wrong value here is fixed later in ppc64_elf_set_toc. */
7147 if (!htab
->elf
.hgot
->def_regular
7148 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7150 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7151 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7152 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7153 htab
->elf
.hgot
->def_regular
= 1;
7154 htab
->elf
.hgot
->root
.linker_def
= 1;
7156 htab
->elf
.hgot
->type
= STT_OBJECT
;
7157 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7161 if (htab
->need_func_desc_adj
)
7163 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7164 htab
->need_func_desc_adj
= 0;
7170 /* Find dynamic relocs for H that apply to read-only sections. */
7173 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7175 struct ppc_link_hash_entry
*eh
;
7176 struct elf_dyn_relocs
*p
;
7178 eh
= (struct ppc_link_hash_entry
*) h
;
7179 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7181 asection
*s
= p
->sec
->output_section
;
7183 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7189 /* Return true if we have dynamic relocs against H or any of its weak
7190 aliases, that apply to read-only sections. Cannot be used after
7191 size_dynamic_sections. */
7194 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7196 struct ppc_link_hash_entry
*eh
;
7198 eh
= (struct ppc_link_hash_entry
*) h
;
7201 if (readonly_dynrelocs (&eh
->elf
))
7203 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.u
.alias
;
7204 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7209 /* Return whether EH has pc-relative dynamic relocs. */
7212 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7214 struct elf_dyn_relocs
*p
;
7216 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7217 if (p
->pc_count
!= 0)
7222 /* Return true if a global entry stub will be created for H. Valid
7223 for ELFv2 before plt entries have been allocated. */
7226 global_entry_stub (struct elf_link_hash_entry
*h
)
7228 struct plt_entry
*pent
;
7230 if (!h
->pointer_equality_needed
7234 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7235 if (pent
->plt
.refcount
> 0
7236 && pent
->addend
== 0)
7242 /* Adjust a symbol defined by a dynamic object and referenced by a
7243 regular object. The current definition is in some section of the
7244 dynamic object, but we're not including those sections. We have to
7245 change the definition to something the rest of the link can
7249 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7250 struct elf_link_hash_entry
*h
)
7252 struct ppc_link_hash_table
*htab
;
7255 htab
= ppc_hash_table (info
);
7259 /* Deal with function syms. */
7260 if (h
->type
== STT_FUNC
7261 || h
->type
== STT_GNU_IFUNC
7264 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7265 || SYMBOL_CALLS_LOCAL (info
, h
)
7266 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7267 /* Discard dyn_relocs when non-pic if we've decided that a
7268 function symbol is local and not an ifunc. We keep dynamic
7269 relocs for ifuncs when local rather than always emitting a
7270 plt call stub for them and defining the symbol on the call
7271 stub. We can't do that for ELFv1 anyway (a function symbol
7272 is defined on a descriptor, not code) and it can be faster at
7273 run-time due to not needing to bounce through a stub. The
7274 dyn_relocs for ifuncs will be applied even in a static
7276 if (!bfd_link_pic (info
)
7277 && h
->type
!= STT_GNU_IFUNC
7279 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7281 /* Clear procedure linkage table information for any symbol that
7282 won't need a .plt entry. */
7283 struct plt_entry
*ent
;
7284 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7285 if (ent
->plt
.refcount
> 0)
7288 || (h
->type
!= STT_GNU_IFUNC
7290 && (htab
->can_convert_all_inline_plt
7291 || (((struct ppc_link_hash_entry
*) h
)->tls_mask
7292 & (TLS_TLS
| PLT_KEEP
)) != PLT_KEEP
)))
7294 h
->plt
.plist
= NULL
;
7296 h
->pointer_equality_needed
= 0;
7298 else if (abiversion (info
->output_bfd
) >= 2)
7300 /* Taking a function's address in a read/write section
7301 doesn't require us to define the function symbol in the
7302 executable on a global entry stub. A dynamic reloc can
7303 be used instead. The reason we prefer a few more dynamic
7304 relocs is that calling via a global entry stub costs a
7305 few more instructions, and pointer_equality_needed causes
7306 extra work in ld.so when resolving these symbols. */
7307 if (global_entry_stub (h
))
7309 if (!readonly_dynrelocs (h
))
7311 h
->pointer_equality_needed
= 0;
7312 /* If we haven't seen a branch reloc and the symbol
7313 isn't an ifunc then we don't need a plt entry. */
7315 h
->plt
.plist
= NULL
;
7317 else if (!bfd_link_pic (info
))
7318 /* We are going to be defining the function symbol on the
7319 plt stub, so no dyn_relocs needed when non-pic. */
7320 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7323 /* ELFv2 function symbols can't have copy relocs. */
7326 else if (!h
->needs_plt
7327 && !readonly_dynrelocs (h
))
7329 /* If we haven't seen a branch reloc and the symbol isn't an
7330 ifunc then we don't need a plt entry. */
7331 h
->plt
.plist
= NULL
;
7332 h
->pointer_equality_needed
= 0;
7337 h
->plt
.plist
= NULL
;
7339 /* If this is a weak symbol, and there is a real definition, the
7340 processor independent code will have arranged for us to see the
7341 real definition first, and we can just use the same value. */
7342 if (h
->is_weakalias
)
7344 struct elf_link_hash_entry
*def
= weakdef (h
);
7345 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7346 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7347 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7348 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
7349 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
7350 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7354 /* If we are creating a shared library, we must presume that the
7355 only references to the symbol are via the global offset table.
7356 For such cases we need not do anything here; the relocations will
7357 be handled correctly by relocate_section. */
7358 if (bfd_link_pic (info
))
7361 /* If there are no references to this symbol that do not use the
7362 GOT, we don't need to generate a copy reloc. */
7363 if (!h
->non_got_ref
)
7366 /* Don't generate a copy reloc for symbols defined in the executable. */
7367 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7369 /* If -z nocopyreloc was given, don't generate them either. */
7370 || info
->nocopyreloc
7372 /* If we don't find any dynamic relocs in read-only sections, then
7373 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7374 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7376 /* Protected variables do not work with .dynbss. The copy in
7377 .dynbss won't be used by the shared library with the protected
7378 definition for the variable. Text relocations are preferable
7379 to an incorrect program. */
7380 || h
->protected_def
)
7383 if (h
->plt
.plist
!= NULL
)
7385 /* We should never get here, but unfortunately there are versions
7386 of gcc out there that improperly (for this ABI) put initialized
7387 function pointers, vtable refs and suchlike in read-only
7388 sections. Allow them to proceed, but warn that this might
7389 break at runtime. */
7390 info
->callbacks
->einfo
7391 (_("%P: copy reloc against `%pT' requires lazy plt linking; "
7392 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7393 h
->root
.root
.string
);
7396 /* This is a reference to a symbol defined by a dynamic object which
7397 is not a function. */
7399 /* We must allocate the symbol in our .dynbss section, which will
7400 become part of the .bss section of the executable. There will be
7401 an entry for this symbol in the .dynsym section. The dynamic
7402 object will contain position independent code, so all references
7403 from the dynamic object to this symbol will go through the global
7404 offset table. The dynamic linker will use the .dynsym entry to
7405 determine the address it must put in the global offset table, so
7406 both the dynamic object and the regular object will refer to the
7407 same memory location for the variable. */
7408 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7410 s
= htab
->elf
.sdynrelro
;
7411 srel
= htab
->elf
.sreldynrelro
;
7415 s
= htab
->elf
.sdynbss
;
7416 srel
= htab
->elf
.srelbss
;
7418 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7420 /* We must generate a R_PPC64_COPY reloc to tell the dynamic
7421 linker to copy the initial value out of the dynamic object
7422 and into the runtime process image. */
7423 srel
->size
+= sizeof (Elf64_External_Rela
);
7427 /* We no longer want dyn_relocs. */
7428 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7429 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7432 /* If given a function descriptor symbol, hide both the function code
7433 sym and the descriptor. */
7435 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7436 struct elf_link_hash_entry
*h
,
7437 bfd_boolean force_local
)
7439 struct ppc_link_hash_entry
*eh
;
7440 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7442 eh
= (struct ppc_link_hash_entry
*) h
;
7443 if (eh
->is_func_descriptor
)
7445 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7450 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7453 /* We aren't supposed to use alloca in BFD because on
7454 systems which do not have alloca the version in libiberty
7455 calls xmalloc, which might cause the program to crash
7456 when it runs out of memory. This function doesn't have a
7457 return status, so there's no way to gracefully return an
7458 error. So cheat. We know that string[-1] can be safely
7459 accessed; It's either a string in an ELF string table,
7460 or allocated in an objalloc structure. */
7462 p
= eh
->elf
.root
.root
.string
- 1;
7465 fh
= (struct ppc_link_hash_entry
*)
7466 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7469 /* Unfortunately, if it so happens that the string we were
7470 looking for was allocated immediately before this string,
7471 then we overwrote the string terminator. That's the only
7472 reason the lookup should fail. */
7475 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7476 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7478 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7479 fh
= (struct ppc_link_hash_entry
*)
7480 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7489 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7494 get_sym_h (struct elf_link_hash_entry
**hp
,
7495 Elf_Internal_Sym
**symp
,
7497 unsigned char **tls_maskp
,
7498 Elf_Internal_Sym
**locsymsp
,
7499 unsigned long r_symndx
,
7502 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7504 if (r_symndx
>= symtab_hdr
->sh_info
)
7506 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7507 struct elf_link_hash_entry
*h
;
7509 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7510 h
= elf_follow_link (h
);
7518 if (symsecp
!= NULL
)
7520 asection
*symsec
= NULL
;
7521 if (h
->root
.type
== bfd_link_hash_defined
7522 || h
->root
.type
== bfd_link_hash_defweak
)
7523 symsec
= h
->root
.u
.def
.section
;
7527 if (tls_maskp
!= NULL
)
7529 struct ppc_link_hash_entry
*eh
;
7531 eh
= (struct ppc_link_hash_entry
*) h
;
7532 *tls_maskp
= &eh
->tls_mask
;
7537 Elf_Internal_Sym
*sym
;
7538 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7540 if (locsyms
== NULL
)
7542 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7543 if (locsyms
== NULL
)
7544 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7545 symtab_hdr
->sh_info
,
7546 0, NULL
, NULL
, NULL
);
7547 if (locsyms
== NULL
)
7549 *locsymsp
= locsyms
;
7551 sym
= locsyms
+ r_symndx
;
7559 if (symsecp
!= NULL
)
7560 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7562 if (tls_maskp
!= NULL
)
7564 struct got_entry
**lgot_ents
;
7565 unsigned char *tls_mask
;
7568 lgot_ents
= elf_local_got_ents (ibfd
);
7569 if (lgot_ents
!= NULL
)
7571 struct plt_entry
**local_plt
= (struct plt_entry
**)
7572 (lgot_ents
+ symtab_hdr
->sh_info
);
7573 unsigned char *lgot_masks
= (unsigned char *)
7574 (local_plt
+ symtab_hdr
->sh_info
);
7575 tls_mask
= &lgot_masks
[r_symndx
];
7577 *tls_maskp
= tls_mask
;
7583 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7584 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7585 type suitable for optimization, and 1 otherwise. */
7588 get_tls_mask (unsigned char **tls_maskp
,
7589 unsigned long *toc_symndx
,
7590 bfd_vma
*toc_addend
,
7591 Elf_Internal_Sym
**locsymsp
,
7592 const Elf_Internal_Rela
*rel
,
7595 unsigned long r_symndx
;
7597 struct elf_link_hash_entry
*h
;
7598 Elf_Internal_Sym
*sym
;
7602 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7603 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7606 if ((*tls_maskp
!= NULL
7607 && (**tls_maskp
& TLS_TLS
) != 0
7608 && **tls_maskp
!= (TLS_TLS
| TLS_MARK
))
7610 || ppc64_elf_section_data (sec
) == NULL
7611 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7614 /* Look inside a TOC section too. */
7617 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7618 off
= h
->root
.u
.def
.value
;
7621 off
= sym
->st_value
;
7622 off
+= rel
->r_addend
;
7623 BFD_ASSERT (off
% 8 == 0);
7624 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7625 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7626 if (toc_symndx
!= NULL
)
7627 *toc_symndx
= r_symndx
;
7628 if (toc_addend
!= NULL
)
7629 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7630 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7632 if ((h
== NULL
|| is_static_defined (h
))
7633 && (next_r
== -1 || next_r
== -2))
7638 /* Find (or create) an entry in the tocsave hash table. */
7640 static struct tocsave_entry
*
7641 tocsave_find (struct ppc_link_hash_table
*htab
,
7642 enum insert_option insert
,
7643 Elf_Internal_Sym
**local_syms
,
7644 const Elf_Internal_Rela
*irela
,
7647 unsigned long r_indx
;
7648 struct elf_link_hash_entry
*h
;
7649 Elf_Internal_Sym
*sym
;
7650 struct tocsave_entry ent
, *p
;
7652 struct tocsave_entry
**slot
;
7654 r_indx
= ELF64_R_SYM (irela
->r_info
);
7655 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7657 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7660 (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7665 ent
.offset
= h
->root
.u
.def
.value
;
7667 ent
.offset
= sym
->st_value
;
7668 ent
.offset
+= irela
->r_addend
;
7670 hash
= tocsave_htab_hash (&ent
);
7671 slot
= ((struct tocsave_entry
**)
7672 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7678 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7687 /* Adjust all global syms defined in opd sections. In gcc generated
7688 code for the old ABI, these will already have been done. */
7691 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7693 struct ppc_link_hash_entry
*eh
;
7695 struct _opd_sec_data
*opd
;
7697 if (h
->root
.type
== bfd_link_hash_indirect
)
7700 if (h
->root
.type
!= bfd_link_hash_defined
7701 && h
->root
.type
!= bfd_link_hash_defweak
)
7704 eh
= (struct ppc_link_hash_entry
*) h
;
7705 if (eh
->adjust_done
)
7708 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7709 opd
= get_opd_info (sym_sec
);
7710 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7712 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7715 /* This entry has been deleted. */
7716 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7719 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7720 if (discarded_section (dsec
))
7722 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7726 eh
->elf
.root
.u
.def
.value
= 0;
7727 eh
->elf
.root
.u
.def
.section
= dsec
;
7730 eh
->elf
.root
.u
.def
.value
+= adjust
;
7731 eh
->adjust_done
= 1;
7736 /* Handles decrementing dynamic reloc counts for the reloc specified by
7737 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7738 have already been determined. */
7741 dec_dynrel_count (bfd_vma r_info
,
7743 struct bfd_link_info
*info
,
7744 Elf_Internal_Sym
**local_syms
,
7745 struct elf_link_hash_entry
*h
,
7746 Elf_Internal_Sym
*sym
)
7748 enum elf_ppc64_reloc_type r_type
;
7749 asection
*sym_sec
= NULL
;
7751 /* Can this reloc be dynamic? This switch, and later tests here
7752 should be kept in sync with the code in check_relocs. */
7753 r_type
= ELF64_R_TYPE (r_info
);
7759 case R_PPC64_TPREL16
:
7760 case R_PPC64_TPREL16_LO
:
7761 case R_PPC64_TPREL16_HI
:
7762 case R_PPC64_TPREL16_HA
:
7763 case R_PPC64_TPREL16_DS
:
7764 case R_PPC64_TPREL16_LO_DS
:
7765 case R_PPC64_TPREL16_HIGH
:
7766 case R_PPC64_TPREL16_HIGHA
:
7767 case R_PPC64_TPREL16_HIGHER
:
7768 case R_PPC64_TPREL16_HIGHERA
:
7769 case R_PPC64_TPREL16_HIGHEST
:
7770 case R_PPC64_TPREL16_HIGHESTA
:
7771 case R_PPC64_TPREL64
:
7772 case R_PPC64_DTPMOD64
:
7773 case R_PPC64_DTPREL64
:
7774 case R_PPC64_ADDR64
:
7778 case R_PPC64_ADDR14
:
7779 case R_PPC64_ADDR14_BRNTAKEN
:
7780 case R_PPC64_ADDR14_BRTAKEN
:
7781 case R_PPC64_ADDR16
:
7782 case R_PPC64_ADDR16_DS
:
7783 case R_PPC64_ADDR16_HA
:
7784 case R_PPC64_ADDR16_HI
:
7785 case R_PPC64_ADDR16_HIGH
:
7786 case R_PPC64_ADDR16_HIGHA
:
7787 case R_PPC64_ADDR16_HIGHER
:
7788 case R_PPC64_ADDR16_HIGHERA
:
7789 case R_PPC64_ADDR16_HIGHEST
:
7790 case R_PPC64_ADDR16_HIGHESTA
:
7791 case R_PPC64_ADDR16_LO
:
7792 case R_PPC64_ADDR16_LO_DS
:
7793 case R_PPC64_ADDR24
:
7794 case R_PPC64_ADDR32
:
7795 case R_PPC64_UADDR16
:
7796 case R_PPC64_UADDR32
:
7797 case R_PPC64_UADDR64
:
7802 if (local_syms
!= NULL
)
7804 unsigned long r_symndx
;
7805 bfd
*ibfd
= sec
->owner
;
7807 r_symndx
= ELF64_R_SYM (r_info
);
7808 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7812 if ((bfd_link_pic (info
)
7813 && (must_be_dyn_reloc (info
, r_type
)
7815 && (!SYMBOLIC_BIND (info
, h
)
7816 || h
->root
.type
== bfd_link_hash_defweak
7817 || !h
->def_regular
))))
7818 || (ELIMINATE_COPY_RELOCS
7819 && !bfd_link_pic (info
)
7821 && (h
->root
.type
== bfd_link_hash_defweak
7822 || !h
->def_regular
)))
7829 struct elf_dyn_relocs
*p
;
7830 struct elf_dyn_relocs
**pp
;
7831 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7833 /* elf_gc_sweep may have already removed all dyn relocs associated
7834 with local syms for a given section. Also, symbol flags are
7835 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7836 report a dynreloc miscount. */
7837 if (*pp
== NULL
&& info
->gc_sections
)
7840 while ((p
= *pp
) != NULL
)
7844 if (!must_be_dyn_reloc (info
, r_type
))
7856 struct ppc_dyn_relocs
*p
;
7857 struct ppc_dyn_relocs
**pp
;
7859 bfd_boolean is_ifunc
;
7861 if (local_syms
== NULL
)
7862 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7863 if (sym_sec
== NULL
)
7866 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7867 pp
= (struct ppc_dyn_relocs
**) vpp
;
7869 if (*pp
== NULL
&& info
->gc_sections
)
7872 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7873 while ((p
= *pp
) != NULL
)
7875 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7886 /* xgettext:c-format */
7887 _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"),
7889 bfd_set_error (bfd_error_bad_value
);
7893 /* Remove unused Official Procedure Descriptor entries. Currently we
7894 only remove those associated with functions in discarded link-once
7895 sections, or weakly defined functions that have been overridden. It
7896 would be possible to remove many more entries for statically linked
7900 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7903 bfd_boolean some_edited
= FALSE
;
7904 asection
*need_pad
= NULL
;
7905 struct ppc_link_hash_table
*htab
;
7907 htab
= ppc_hash_table (info
);
7911 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7914 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7915 Elf_Internal_Shdr
*symtab_hdr
;
7916 Elf_Internal_Sym
*local_syms
;
7917 struct _opd_sec_data
*opd
;
7918 bfd_boolean need_edit
, add_aux_fields
, broken
;
7919 bfd_size_type cnt_16b
= 0;
7921 if (!is_ppc64_elf (ibfd
))
7924 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7925 if (sec
== NULL
|| sec
->size
== 0)
7928 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7931 if (sec
->output_section
== bfd_abs_section_ptr
)
7934 /* Look through the section relocs. */
7935 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7939 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7941 /* Read the relocations. */
7942 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7944 if (relstart
== NULL
)
7947 /* First run through the relocs to check they are sane, and to
7948 determine whether we need to edit this opd section. */
7952 relend
= relstart
+ sec
->reloc_count
;
7953 for (rel
= relstart
; rel
< relend
; )
7955 enum elf_ppc64_reloc_type r_type
;
7956 unsigned long r_symndx
;
7958 struct elf_link_hash_entry
*h
;
7959 Elf_Internal_Sym
*sym
;
7962 /* .opd contains an array of 16 or 24 byte entries. We're
7963 only interested in the reloc pointing to a function entry
7965 offset
= rel
->r_offset
;
7966 if (rel
+ 1 == relend
7967 || rel
[1].r_offset
!= offset
+ 8)
7969 /* If someone messes with .opd alignment then after a
7970 "ld -r" we might have padding in the middle of .opd.
7971 Also, there's nothing to prevent someone putting
7972 something silly in .opd with the assembler. No .opd
7973 optimization for them! */
7976 (_("%pB: .opd is not a regular array of opd entries"), ibfd
);
7981 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7982 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7985 /* xgettext:c-format */
7986 (_("%pB: unexpected reloc type %u in .opd section"),
7992 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7993 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7997 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7999 const char *sym_name
;
8001 sym_name
= h
->root
.root
.string
;
8003 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8007 /* xgettext:c-format */
8008 (_("%pB: undefined sym `%s' in .opd section"),
8014 /* opd entries are always for functions defined in the
8015 current input bfd. If the symbol isn't defined in the
8016 input bfd, then we won't be using the function in this
8017 bfd; It must be defined in a linkonce section in another
8018 bfd, or is weak. It's also possible that we are
8019 discarding the function due to a linker script /DISCARD/,
8020 which we test for via the output_section. */
8021 if (sym_sec
->owner
!= ibfd
8022 || sym_sec
->output_section
== bfd_abs_section_ptr
)
8026 if (rel
+ 1 == relend
8027 || (rel
+ 2 < relend
8028 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
8033 if (sec
->size
== offset
+ 24)
8038 if (sec
->size
== offset
+ 16)
8045 else if (rel
+ 1 < relend
8046 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8047 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8049 if (rel
[0].r_offset
== offset
+ 16)
8051 else if (rel
[0].r_offset
!= offset
+ 24)
8058 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8060 if (!broken
&& (need_edit
|| add_aux_fields
))
8062 Elf_Internal_Rela
*write_rel
;
8063 Elf_Internal_Shdr
*rel_hdr
;
8064 bfd_byte
*rptr
, *wptr
;
8065 bfd_byte
*new_contents
;
8068 new_contents
= NULL
;
8069 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8070 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8071 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8072 if (opd
->adjust
== NULL
)
8075 /* This seems a waste of time as input .opd sections are all
8076 zeros as generated by gcc, but I suppose there's no reason
8077 this will always be so. We might start putting something in
8078 the third word of .opd entries. */
8079 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8082 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8087 if (local_syms
!= NULL
8088 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8090 if (elf_section_data (sec
)->relocs
!= relstart
)
8094 sec
->contents
= loc
;
8095 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8098 elf_section_data (sec
)->relocs
= relstart
;
8100 new_contents
= sec
->contents
;
8103 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8104 if (new_contents
== NULL
)
8108 wptr
= new_contents
;
8109 rptr
= sec
->contents
;
8110 write_rel
= relstart
;
8111 for (rel
= relstart
; rel
< relend
; )
8113 unsigned long r_symndx
;
8115 struct elf_link_hash_entry
*h
;
8116 struct ppc_link_hash_entry
*fdh
= NULL
;
8117 Elf_Internal_Sym
*sym
;
8119 Elf_Internal_Rela
*next_rel
;
8122 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8123 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8128 if (next_rel
+ 1 == relend
8129 || (next_rel
+ 2 < relend
8130 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8133 /* See if the .opd entry is full 24 byte or
8134 16 byte (with fd_aux entry overlapped with next
8137 if (next_rel
== relend
)
8139 if (sec
->size
== rel
->r_offset
+ 16)
8142 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8146 && h
->root
.root
.string
[0] == '.')
8148 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8151 fdh
= ppc_follow_link (fdh
);
8152 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8153 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8158 skip
= (sym_sec
->owner
!= ibfd
8159 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8162 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8164 /* Arrange for the function descriptor sym
8166 fdh
->elf
.root
.u
.def
.value
= 0;
8167 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8169 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8171 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8176 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8180 if (++rel
== next_rel
)
8183 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8184 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8191 /* We'll be keeping this opd entry. */
8196 /* Redefine the function descriptor symbol to
8197 this location in the opd section. It is
8198 necessary to update the value here rather
8199 than using an array of adjustments as we do
8200 for local symbols, because various places
8201 in the generic ELF code use the value
8202 stored in u.def.value. */
8203 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8204 fdh
->adjust_done
= 1;
8207 /* Local syms are a bit tricky. We could
8208 tweak them as they can be cached, but
8209 we'd need to look through the local syms
8210 for the function descriptor sym which we
8211 don't have at the moment. So keep an
8212 array of adjustments. */
8213 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8214 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8217 memcpy (wptr
, rptr
, opd_ent_size
);
8218 wptr
+= opd_ent_size
;
8219 if (add_aux_fields
&& opd_ent_size
== 16)
8221 memset (wptr
, '\0', 8);
8225 /* We need to adjust any reloc offsets to point to the
8227 for ( ; rel
!= next_rel
; ++rel
)
8229 rel
->r_offset
+= adjust
;
8230 if (write_rel
!= rel
)
8231 memcpy (write_rel
, rel
, sizeof (*rel
));
8236 rptr
+= opd_ent_size
;
8239 sec
->size
= wptr
- new_contents
;
8240 sec
->reloc_count
= write_rel
- relstart
;
8243 free (sec
->contents
);
8244 sec
->contents
= new_contents
;
8247 /* Fudge the header size too, as this is used later in
8248 elf_bfd_final_link if we are emitting relocs. */
8249 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8250 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8253 else if (elf_section_data (sec
)->relocs
!= relstart
)
8256 if (local_syms
!= NULL
8257 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8259 if (!info
->keep_memory
)
8262 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8267 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8269 /* If we are doing a final link and the last .opd entry is just 16 byte
8270 long, add a 8 byte padding after it. */
8271 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8275 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8277 BFD_ASSERT (need_pad
->size
> 0);
8279 p
= bfd_malloc (need_pad
->size
+ 8);
8283 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8284 p
, 0, need_pad
->size
))
8287 need_pad
->contents
= p
;
8288 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8292 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8296 need_pad
->contents
= p
;
8299 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8300 need_pad
->size
+= 8;
8306 /* Analyze inline PLT call relocations to see whether calls to locally
8307 defined functions can be converted to direct calls. */
8310 ppc64_elf_inline_plt (struct bfd_link_info
*info
)
8312 struct ppc_link_hash_table
*htab
;
8315 bfd_vma low_vma
, high_vma
, limit
;
8317 htab
= ppc_hash_table (info
);
8321 /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is
8322 reduced somewhat to cater for possible stubs that might be added
8323 between the call and its destination. */
8324 if (htab
->params
->group_size
< 0)
8326 limit
= -htab
->params
->group_size
;
8332 limit
= htab
->params
->group_size
;
8339 for (sec
= info
->output_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8340 if ((sec
->flags
& (SEC_ALLOC
| SEC_CODE
)) == (SEC_ALLOC
| SEC_CODE
))
8342 if (low_vma
> sec
->vma
)
8344 if (high_vma
< sec
->vma
+ sec
->size
)
8345 high_vma
= sec
->vma
+ sec
->size
;
8348 /* If a "bl" can reach anywhere in local code sections, then we can
8349 convert all inline PLT sequences to direct calls when the symbol
8351 if (high_vma
- low_vma
< limit
)
8353 htab
->can_convert_all_inline_plt
= 1;
8357 /* Otherwise, go looking through relocs for cases where a direct
8358 call won't reach. Mark the symbol on any such reloc to disable
8359 the optimization and keep the PLT entry as it seems likely that
8360 this will be better than creating trampolines. Note that this
8361 will disable the optimization for all inline PLT calls to a
8362 particular symbol, not just those that won't reach. The
8363 difficulty in doing a more precise optimization is that the
8364 linker needs to make a decision depending on whether a
8365 particular R_PPC64_PLTCALL insn can be turned into a direct
8366 call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in
8367 the sequence, and there is nothing that ties those relocs
8368 together except their symbol. */
8370 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8372 Elf_Internal_Shdr
*symtab_hdr
;
8373 Elf_Internal_Sym
*local_syms
;
8375 if (!is_ppc64_elf (ibfd
))
8379 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8381 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8382 if (ppc64_elf_section_data (sec
)->has_pltcall
8383 && !bfd_is_abs_section (sec
->output_section
))
8385 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8387 /* Read the relocations. */
8388 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8390 if (relstart
== NULL
)
8393 relend
= relstart
+ sec
->reloc_count
;
8394 for (rel
= relstart
; rel
< relend
; )
8396 enum elf_ppc64_reloc_type r_type
;
8397 unsigned long r_symndx
;
8399 struct elf_link_hash_entry
*h
;
8400 Elf_Internal_Sym
*sym
;
8401 unsigned char *tls_maskp
;
8403 r_type
= ELF64_R_TYPE (rel
->r_info
);
8404 if (r_type
!= R_PPC64_PLTCALL
)
8407 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8408 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_maskp
, &local_syms
,
8411 if (elf_section_data (sec
)->relocs
!= relstart
)
8413 if (local_syms
!= NULL
8414 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8419 if (sym_sec
!= NULL
&& sym_sec
->output_section
!= NULL
)
8423 to
= h
->root
.u
.def
.value
;
8426 to
+= (rel
->r_addend
8427 + sym_sec
->output_offset
8428 + sym_sec
->output_section
->vma
);
8429 from
= (rel
->r_offset
8430 + sec
->output_offset
8431 + sec
->output_section
->vma
);
8432 if (to
- from
+ limit
< 2 * limit
)
8433 *tls_maskp
&= ~PLT_KEEP
;
8436 if (elf_section_data (sec
)->relocs
!= relstart
)
8440 if (local_syms
!= NULL
8441 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8443 if (!info
->keep_memory
)
8446 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8453 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8456 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8458 struct ppc_link_hash_table
*htab
;
8460 htab
= ppc_hash_table (info
);
8464 if (abiversion (info
->output_bfd
) == 1)
8467 if (htab
->params
->no_multi_toc
)
8468 htab
->do_multi_toc
= 0;
8469 else if (!htab
->do_multi_toc
)
8470 htab
->params
->no_multi_toc
= 1;
8472 /* Default to --no-plt-localentry, as this option can cause problems
8473 with symbol interposition. For example, glibc libpthread.so and
8474 libc.so duplicate many pthread symbols, with a fallback
8475 implementation in libc.so. In some cases the fallback does more
8476 work than the pthread implementation. __pthread_condattr_destroy
8477 is one such symbol: the libpthread.so implementation is
8478 localentry:0 while the libc.so implementation is localentry:8.
8479 An app that "cleverly" uses dlopen to only load necessary
8480 libraries at runtime may omit loading libpthread.so when not
8481 running multi-threaded, which then results in the libc.so
8482 fallback symbols being used and ld.so complaining. Now there
8483 are workarounds in ld (see non_zero_localentry) to detect the
8484 pthread situation, but that may not be the only case where
8485 --plt-localentry can cause trouble. */
8486 if (htab
->params
->plt_localentry0
< 0)
8487 htab
->params
->plt_localentry0
= 0;
8488 if (htab
->params
->plt_localentry0
8489 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8490 FALSE
, FALSE
, FALSE
) == NULL
)
8492 (_("warning: --plt-localentry is especially dangerous without "
8493 "ld.so support to detect ABI violations"));
8495 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8496 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8497 FALSE
, FALSE
, TRUE
));
8498 /* Move dynamic linking info to the function descriptor sym. */
8499 if (htab
->tls_get_addr
!= NULL
)
8500 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8501 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8502 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8503 FALSE
, FALSE
, TRUE
));
8504 if (htab
->params
->tls_get_addr_opt
)
8506 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8508 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8509 FALSE
, FALSE
, TRUE
);
8511 func_desc_adjust (opt
, info
);
8512 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8513 FALSE
, FALSE
, TRUE
);
8515 && (opt_fd
->root
.type
== bfd_link_hash_defined
8516 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8518 /* If glibc supports an optimized __tls_get_addr call stub,
8519 signalled by the presence of __tls_get_addr_opt, and we'll
8520 be calling __tls_get_addr via a plt call stub, then
8521 make __tls_get_addr point to __tls_get_addr_opt. */
8522 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8523 if (htab
->elf
.dynamic_sections_created
8525 && (tga_fd
->type
== STT_FUNC
8526 || tga_fd
->needs_plt
)
8527 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8528 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8530 struct plt_entry
*ent
;
8532 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8533 if (ent
->plt
.refcount
> 0)
8537 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8538 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8539 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8541 if (opt_fd
->dynindx
!= -1)
8543 /* Use __tls_get_addr_opt in dynamic relocations. */
8544 opt_fd
->dynindx
= -1;
8545 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8546 opt_fd
->dynstr_index
);
8547 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8550 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8551 tga
= &htab
->tls_get_addr
->elf
;
8552 if (opt
!= NULL
&& tga
!= NULL
)
8554 tga
->root
.type
= bfd_link_hash_indirect
;
8555 tga
->root
.u
.i
.link
= &opt
->root
;
8556 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8558 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8560 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8562 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8563 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8564 if (htab
->tls_get_addr
!= NULL
)
8566 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8567 htab
->tls_get_addr
->is_func
= 1;
8572 else if (htab
->params
->tls_get_addr_opt
< 0)
8573 htab
->params
->tls_get_addr_opt
= 0;
8575 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8578 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8582 branch_reloc_hash_match (const bfd
*ibfd
,
8583 const Elf_Internal_Rela
*rel
,
8584 const struct ppc_link_hash_entry
*hash1
,
8585 const struct ppc_link_hash_entry
*hash2
)
8587 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8588 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8589 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8591 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8593 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8594 struct elf_link_hash_entry
*h
;
8596 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8597 h
= elf_follow_link (h
);
8598 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8604 /* Run through all the TLS relocs looking for optimization
8605 opportunities. The linker has been hacked (see ppc64elf.em) to do
8606 a preliminary section layout so that we know the TLS segment
8607 offsets. We can't optimize earlier because some optimizations need
8608 to know the tp offset, and we need to optimize before allocating
8609 dynamic relocations. */
8612 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8616 struct ppc_link_hash_table
*htab
;
8617 unsigned char *toc_ref
;
8620 if (!bfd_link_executable (info
))
8623 htab
= ppc_hash_table (info
);
8627 /* Make two passes over the relocs. On the first pass, mark toc
8628 entries involved with tls relocs, and check that tls relocs
8629 involved in setting up a tls_get_addr call are indeed followed by
8630 such a call. If they are not, we can't do any tls optimization.
8631 On the second pass twiddle tls_mask flags to notify
8632 relocate_section that optimization can be done, and adjust got
8633 and plt refcounts. */
8635 for (pass
= 0; pass
< 2; ++pass
)
8636 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8638 Elf_Internal_Sym
*locsyms
= NULL
;
8639 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8641 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8642 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8644 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8645 bfd_boolean found_tls_get_addr_arg
= 0;
8647 /* Read the relocations. */
8648 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8650 if (relstart
== NULL
)
8656 relend
= relstart
+ sec
->reloc_count
;
8657 for (rel
= relstart
; rel
< relend
; rel
++)
8659 enum elf_ppc64_reloc_type r_type
;
8660 unsigned long r_symndx
;
8661 struct elf_link_hash_entry
*h
;
8662 Elf_Internal_Sym
*sym
;
8664 unsigned char *tls_mask
;
8665 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8667 bfd_boolean ok_tprel
, is_local
;
8668 long toc_ref_index
= 0;
8669 int expecting_tls_get_addr
= 0;
8670 bfd_boolean ret
= FALSE
;
8672 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8673 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8677 if (elf_section_data (sec
)->relocs
!= relstart
)
8679 if (toc_ref
!= NULL
)
8682 && (elf_symtab_hdr (ibfd
).contents
8683 != (unsigned char *) locsyms
))
8690 if (h
->root
.type
== bfd_link_hash_defined
8691 || h
->root
.type
== bfd_link_hash_defweak
)
8692 value
= h
->root
.u
.def
.value
;
8693 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8697 found_tls_get_addr_arg
= 0;
8702 /* Symbols referenced by TLS relocs must be of type
8703 STT_TLS. So no need for .opd local sym adjust. */
8704 value
= sym
->st_value
;
8713 && h
->root
.type
== bfd_link_hash_undefweak
)
8715 else if (sym_sec
!= NULL
8716 && sym_sec
->output_section
!= NULL
)
8718 value
+= sym_sec
->output_offset
;
8719 value
+= sym_sec
->output_section
->vma
;
8720 value
-= htab
->elf
.tls_sec
->vma
;
8721 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8722 < (bfd_vma
) 1 << 32);
8726 r_type
= ELF64_R_TYPE (rel
->r_info
);
8727 /* If this section has old-style __tls_get_addr calls
8728 without marker relocs, then check that each
8729 __tls_get_addr call reloc is preceded by a reloc
8730 that conceivably belongs to the __tls_get_addr arg
8731 setup insn. If we don't find matching arg setup
8732 relocs, don't do any tls optimization. */
8734 && sec
->has_tls_get_addr_call
8736 && (h
== &htab
->tls_get_addr
->elf
8737 || h
== &htab
->tls_get_addr_fd
->elf
)
8738 && !found_tls_get_addr_arg
8739 && is_branch_reloc (r_type
))
8741 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8742 "TLS optimization disabled\n"),
8743 ibfd
, sec
, rel
->r_offset
);
8748 found_tls_get_addr_arg
= 0;
8751 case R_PPC64_GOT_TLSLD16
:
8752 case R_PPC64_GOT_TLSLD16_LO
:
8753 expecting_tls_get_addr
= 1;
8754 found_tls_get_addr_arg
= 1;
8757 case R_PPC64_GOT_TLSLD16_HI
:
8758 case R_PPC64_GOT_TLSLD16_HA
:
8759 /* These relocs should never be against a symbol
8760 defined in a shared lib. Leave them alone if
8761 that turns out to be the case. */
8768 tls_type
= TLS_TLS
| TLS_LD
;
8771 case R_PPC64_GOT_TLSGD16
:
8772 case R_PPC64_GOT_TLSGD16_LO
:
8773 expecting_tls_get_addr
= 1;
8774 found_tls_get_addr_arg
= 1;
8777 case R_PPC64_GOT_TLSGD16_HI
:
8778 case R_PPC64_GOT_TLSGD16_HA
:
8784 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8786 tls_type
= TLS_TLS
| TLS_GD
;
8789 case R_PPC64_GOT_TPREL16_DS
:
8790 case R_PPC64_GOT_TPREL16_LO_DS
:
8791 case R_PPC64_GOT_TPREL16_HI
:
8792 case R_PPC64_GOT_TPREL16_HA
:
8797 tls_clear
= TLS_TPREL
;
8798 tls_type
= TLS_TLS
| TLS_TPREL
;
8805 if (rel
+ 1 < relend
8806 && is_plt_seq_reloc (ELF64_R_TYPE (rel
[1].r_info
)))
8809 && ELF64_R_TYPE (rel
[1].r_info
) != R_PPC64_PLTSEQ
)
8811 r_symndx
= ELF64_R_SYM (rel
[1].r_info
);
8812 if (!get_sym_h (&h
, NULL
, NULL
, NULL
, &locsyms
,
8817 struct plt_entry
*ent
= NULL
;
8819 for (ent
= h
->plt
.plist
;
8822 if (ent
->addend
== rel
[1].r_addend
)
8826 && ent
->plt
.refcount
> 0)
8827 ent
->plt
.refcount
-= 1;
8832 found_tls_get_addr_arg
= 1;
8837 case R_PPC64_TOC16_LO
:
8838 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8841 /* Mark this toc entry as referenced by a TLS
8842 code sequence. We can do that now in the
8843 case of R_PPC64_TLS, and after checking for
8844 tls_get_addr for the TOC16 relocs. */
8845 if (toc_ref
== NULL
)
8846 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8847 if (toc_ref
== NULL
)
8851 value
= h
->root
.u
.def
.value
;
8853 value
= sym
->st_value
;
8854 value
+= rel
->r_addend
;
8857 BFD_ASSERT (value
< toc
->size
8858 && toc
->output_offset
% 8 == 0);
8859 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8860 if (r_type
== R_PPC64_TLS
8861 || r_type
== R_PPC64_TLSGD
8862 || r_type
== R_PPC64_TLSLD
)
8864 toc_ref
[toc_ref_index
] = 1;
8868 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8873 expecting_tls_get_addr
= 2;
8876 case R_PPC64_TPREL64
:
8880 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8885 tls_set
= TLS_EXPLICIT
;
8886 tls_clear
= TLS_TPREL
;
8891 case R_PPC64_DTPMOD64
:
8895 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8897 if (rel
+ 1 < relend
8899 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8900 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8904 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8907 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8916 tls_set
= TLS_EXPLICIT
;
8927 if (!expecting_tls_get_addr
8928 || !sec
->has_tls_get_addr_call
)
8931 if (rel
+ 1 < relend
8932 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8934 htab
->tls_get_addr_fd
))
8936 if (expecting_tls_get_addr
== 2)
8938 /* Check for toc tls entries. */
8939 unsigned char *toc_tls
;
8942 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8947 if (toc_tls
!= NULL
)
8949 if ((*toc_tls
& TLS_TLS
) != 0
8950 && ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0))
8951 found_tls_get_addr_arg
= 1;
8953 toc_ref
[toc_ref_index
] = 1;
8959 /* Uh oh, we didn't find the expected call. We
8960 could just mark this symbol to exclude it
8961 from tls optimization but it's safer to skip
8962 the entire optimization. */
8963 /* xgettext:c-format */
8964 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8965 "TLS optimization disabled\n"),
8966 ibfd
, sec
, rel
->r_offset
);
8971 /* If we don't have old-style __tls_get_addr calls
8972 without TLSGD/TLSLD marker relocs, and we haven't
8973 found a new-style __tls_get_addr call with a
8974 marker for this symbol, then we either have a
8975 broken object file or an -mlongcall style
8976 indirect call to __tls_get_addr without a marker.
8977 Disable optimization in this case. */
8978 if ((tls_clear
& (TLS_GD
| TLS_LD
)) != 0
8979 && (tls_set
& TLS_EXPLICIT
) == 0
8980 && !sec
->has_tls_get_addr_call
8981 && ((*tls_mask
& (TLS_TLS
| TLS_MARK
))
8982 != (TLS_TLS
| TLS_MARK
)))
8985 if (expecting_tls_get_addr
)
8987 struct plt_entry
*ent
= NULL
;
8989 if (htab
->tls_get_addr
!= NULL
)
8990 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8993 if (ent
->addend
== 0)
8996 if (ent
== NULL
&& htab
->tls_get_addr_fd
!= NULL
)
8997 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
9000 if (ent
->addend
== 0)
9004 && ent
->plt
.refcount
> 0)
9005 ent
->plt
.refcount
-= 1;
9011 if ((tls_set
& TLS_EXPLICIT
) == 0)
9013 struct got_entry
*ent
;
9015 /* Adjust got entry for this reloc. */
9019 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
9021 for (; ent
!= NULL
; ent
= ent
->next
)
9022 if (ent
->addend
== rel
->r_addend
9023 && ent
->owner
== ibfd
9024 && ent
->tls_type
== tls_type
)
9031 /* We managed to get rid of a got entry. */
9032 if (ent
->got
.refcount
> 0)
9033 ent
->got
.refcount
-= 1;
9038 /* If we got rid of a DTPMOD/DTPREL reloc pair then
9039 we'll lose one or two dyn relocs. */
9040 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
9044 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
9046 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
9052 *tls_mask
|= tls_set
;
9053 *tls_mask
&= ~tls_clear
;
9056 if (elf_section_data (sec
)->relocs
!= relstart
)
9061 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
9063 if (!info
->keep_memory
)
9066 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
9070 if (toc_ref
!= NULL
)
9072 htab
->do_tls_opt
= 1;
9076 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
9077 the values of any global symbols in a toc section that has been
9078 edited. Globals in toc sections should be a rarity, so this function
9079 sets a flag if any are found in toc sections other than the one just
9080 edited, so that further hash table traversals can be avoided. */
9082 struct adjust_toc_info
9085 unsigned long *skip
;
9086 bfd_boolean global_toc_syms
;
9089 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
9092 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
9094 struct ppc_link_hash_entry
*eh
;
9095 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
9098 if (h
->root
.type
!= bfd_link_hash_defined
9099 && h
->root
.type
!= bfd_link_hash_defweak
)
9102 eh
= (struct ppc_link_hash_entry
*) h
;
9103 if (eh
->adjust_done
)
9106 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
9108 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
9109 i
= toc_inf
->toc
->rawsize
>> 3;
9111 i
= eh
->elf
.root
.u
.def
.value
>> 3;
9113 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9116 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
9119 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
9120 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
9123 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
9124 eh
->adjust_done
= 1;
9126 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
9127 toc_inf
->global_toc_syms
= TRUE
;
9132 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
9133 on a _LO variety toc/got reloc. */
9136 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
9138 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
9139 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
9140 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
9141 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
9142 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
9143 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
9144 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
9145 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
9146 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
9147 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
9148 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
9149 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
9150 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
9151 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
9152 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
9153 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
9154 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9155 /* Exclude lfqu by testing reloc. If relocs are ever
9156 defined for the reduced D field in psq_lu then those
9157 will need testing too. */
9158 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9159 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
9161 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
9162 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9163 /* Exclude stfqu. psq_stu as above for psq_lu. */
9164 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9165 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
9166 && (insn
& 1) == 0));
9169 /* Examine all relocs referencing .toc sections in order to remove
9170 unused .toc entries. */
9173 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
9176 struct adjust_toc_info toc_inf
;
9177 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9179 htab
->do_toc_opt
= 1;
9180 toc_inf
.global_toc_syms
= TRUE
;
9181 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9183 asection
*toc
, *sec
;
9184 Elf_Internal_Shdr
*symtab_hdr
;
9185 Elf_Internal_Sym
*local_syms
;
9186 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
9187 unsigned long *skip
, *drop
;
9188 unsigned char *used
;
9189 unsigned char *keep
, last
, some_unused
;
9191 if (!is_ppc64_elf (ibfd
))
9194 toc
= bfd_get_section_by_name (ibfd
, ".toc");
9197 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
9198 || discarded_section (toc
))
9203 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9205 /* Look at sections dropped from the final link. */
9208 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9210 if (sec
->reloc_count
== 0
9211 || !discarded_section (sec
)
9212 || get_opd_info (sec
)
9213 || (sec
->flags
& SEC_ALLOC
) == 0
9214 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9217 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
9218 if (relstart
== NULL
)
9221 /* Run through the relocs to see which toc entries might be
9223 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9225 enum elf_ppc64_reloc_type r_type
;
9226 unsigned long r_symndx
;
9228 struct elf_link_hash_entry
*h
;
9229 Elf_Internal_Sym
*sym
;
9232 r_type
= ELF64_R_TYPE (rel
->r_info
);
9239 case R_PPC64_TOC16_LO
:
9240 case R_PPC64_TOC16_HI
:
9241 case R_PPC64_TOC16_HA
:
9242 case R_PPC64_TOC16_DS
:
9243 case R_PPC64_TOC16_LO_DS
:
9247 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9248 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9256 val
= h
->root
.u
.def
.value
;
9258 val
= sym
->st_value
;
9259 val
+= rel
->r_addend
;
9261 if (val
>= toc
->size
)
9264 /* Anything in the toc ought to be aligned to 8 bytes.
9265 If not, don't mark as unused. */
9271 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9276 skip
[val
>> 3] = ref_from_discarded
;
9279 if (elf_section_data (sec
)->relocs
!= relstart
)
9283 /* For largetoc loads of address constants, we can convert
9284 . addis rx,2,addr@got@ha
9285 . ld ry,addr@got@l(rx)
9287 . addis rx,2,addr@toc@ha
9288 . addi ry,rx,addr@toc@l
9289 when addr is within 2G of the toc pointer. This then means
9290 that the word storing "addr" in the toc is no longer needed. */
9292 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9293 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9294 && toc
->reloc_count
!= 0)
9296 /* Read toc relocs. */
9297 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9299 if (toc_relocs
== NULL
)
9302 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9304 enum elf_ppc64_reloc_type r_type
;
9305 unsigned long r_symndx
;
9307 struct elf_link_hash_entry
*h
;
9308 Elf_Internal_Sym
*sym
;
9311 r_type
= ELF64_R_TYPE (rel
->r_info
);
9312 if (r_type
!= R_PPC64_ADDR64
)
9315 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9316 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9321 || sym_sec
->output_section
== NULL
9322 || discarded_section (sym_sec
))
9325 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9330 if (h
->type
== STT_GNU_IFUNC
)
9332 val
= h
->root
.u
.def
.value
;
9336 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9338 val
= sym
->st_value
;
9340 val
+= rel
->r_addend
;
9341 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9343 /* We don't yet know the exact toc pointer value, but we
9344 know it will be somewhere in the toc section. Don't
9345 optimize if the difference from any possible toc
9346 pointer is outside [ff..f80008000, 7fff7fff]. */
9347 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9348 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9351 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9352 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9357 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9362 skip
[rel
->r_offset
>> 3]
9363 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9370 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9374 if (local_syms
!= NULL
9375 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9379 && elf_section_data (sec
)->relocs
!= relstart
)
9381 if (toc_relocs
!= NULL
9382 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9389 /* Now check all kept sections that might reference the toc.
9390 Check the toc itself last. */
9391 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9394 sec
= (sec
== toc
? NULL
9395 : sec
->next
== NULL
? toc
9396 : sec
->next
== toc
&& toc
->next
? toc
->next
9401 if (sec
->reloc_count
== 0
9402 || discarded_section (sec
)
9403 || get_opd_info (sec
)
9404 || (sec
->flags
& SEC_ALLOC
) == 0
9405 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9408 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9410 if (relstart
== NULL
)
9416 /* Mark toc entries referenced as used. */
9420 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9422 enum elf_ppc64_reloc_type r_type
;
9423 unsigned long r_symndx
;
9425 struct elf_link_hash_entry
*h
;
9426 Elf_Internal_Sym
*sym
;
9428 enum {no_check
, check_lo
, check_ha
} insn_check
;
9430 r_type
= ELF64_R_TYPE (rel
->r_info
);
9434 insn_check
= no_check
;
9437 case R_PPC64_GOT_TLSLD16_HA
:
9438 case R_PPC64_GOT_TLSGD16_HA
:
9439 case R_PPC64_GOT_TPREL16_HA
:
9440 case R_PPC64_GOT_DTPREL16_HA
:
9441 case R_PPC64_GOT16_HA
:
9442 case R_PPC64_TOC16_HA
:
9443 insn_check
= check_ha
;
9446 case R_PPC64_GOT_TLSLD16_LO
:
9447 case R_PPC64_GOT_TLSGD16_LO
:
9448 case R_PPC64_GOT_TPREL16_LO_DS
:
9449 case R_PPC64_GOT_DTPREL16_LO_DS
:
9450 case R_PPC64_GOT16_LO
:
9451 case R_PPC64_GOT16_LO_DS
:
9452 case R_PPC64_TOC16_LO
:
9453 case R_PPC64_TOC16_LO_DS
:
9454 insn_check
= check_lo
;
9458 if (insn_check
!= no_check
)
9460 bfd_vma off
= rel
->r_offset
& ~3;
9461 unsigned char buf
[4];
9464 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9469 insn
= bfd_get_32 (ibfd
, buf
);
9470 if (insn_check
== check_lo
9471 ? !ok_lo_toc_insn (insn
, r_type
)
9472 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9473 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9477 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9478 sprintf (str
, "%#08x", insn
);
9479 info
->callbacks
->einfo
9480 /* xgettext:c-format */
9481 (_("%H: toc optimization is not supported for"
9482 " %s instruction\n"),
9483 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9490 case R_PPC64_TOC16_LO
:
9491 case R_PPC64_TOC16_HI
:
9492 case R_PPC64_TOC16_HA
:
9493 case R_PPC64_TOC16_DS
:
9494 case R_PPC64_TOC16_LO_DS
:
9495 /* In case we're taking addresses of toc entries. */
9496 case R_PPC64_ADDR64
:
9503 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9504 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9515 val
= h
->root
.u
.def
.value
;
9517 val
= sym
->st_value
;
9518 val
+= rel
->r_addend
;
9520 if (val
>= toc
->size
)
9523 if ((skip
[val
>> 3] & can_optimize
) != 0)
9530 case R_PPC64_TOC16_HA
:
9533 case R_PPC64_TOC16_LO_DS
:
9534 off
= rel
->r_offset
;
9535 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9536 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9542 if ((opc
& (0x3f << 2)) == (58u << 2))
9547 /* Wrong sort of reloc, or not a ld. We may
9548 as well clear ref_from_discarded too. */
9555 /* For the toc section, we only mark as used if this
9556 entry itself isn't unused. */
9557 else if ((used
[rel
->r_offset
>> 3]
9558 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9561 /* Do all the relocs again, to catch reference
9570 if (elf_section_data (sec
)->relocs
!= relstart
)
9574 /* Merge the used and skip arrays. Assume that TOC
9575 doublewords not appearing as either used or unused belong
9576 to an entry more than one doubleword in size. */
9577 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9578 drop
< skip
+ (toc
->size
+ 7) / 8;
9583 *drop
&= ~ref_from_discarded
;
9584 if ((*drop
& can_optimize
) != 0)
9588 else if ((*drop
& ref_from_discarded
) != 0)
9591 last
= ref_from_discarded
;
9601 bfd_byte
*contents
, *src
;
9603 Elf_Internal_Sym
*sym
;
9604 bfd_boolean local_toc_syms
= FALSE
;
9606 /* Shuffle the toc contents, and at the same time convert the
9607 skip array from booleans into offsets. */
9608 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9611 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9613 for (src
= contents
, off
= 0, drop
= skip
;
9614 src
< contents
+ toc
->size
;
9617 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9622 memcpy (src
- off
, src
, 8);
9626 toc
->rawsize
= toc
->size
;
9627 toc
->size
= src
- contents
- off
;
9629 /* Adjust addends for relocs against the toc section sym,
9630 and optimize any accesses we can. */
9631 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9633 if (sec
->reloc_count
== 0
9634 || discarded_section (sec
))
9637 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9639 if (relstart
== NULL
)
9642 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9644 enum elf_ppc64_reloc_type r_type
;
9645 unsigned long r_symndx
;
9647 struct elf_link_hash_entry
*h
;
9650 r_type
= ELF64_R_TYPE (rel
->r_info
);
9657 case R_PPC64_TOC16_LO
:
9658 case R_PPC64_TOC16_HI
:
9659 case R_PPC64_TOC16_HA
:
9660 case R_PPC64_TOC16_DS
:
9661 case R_PPC64_TOC16_LO_DS
:
9662 case R_PPC64_ADDR64
:
9666 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9667 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9675 val
= h
->root
.u
.def
.value
;
9678 val
= sym
->st_value
;
9680 local_toc_syms
= TRUE
;
9683 val
+= rel
->r_addend
;
9685 if (val
> toc
->rawsize
)
9687 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9689 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9691 Elf_Internal_Rela
*tocrel
9692 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9693 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9697 case R_PPC64_TOC16_HA
:
9698 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9701 case R_PPC64_TOC16_LO_DS
:
9702 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9706 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9708 info
->callbacks
->einfo
9709 /* xgettext:c-format */
9710 (_("%H: %s references "
9711 "optimized away TOC entry\n"),
9712 ibfd
, sec
, rel
->r_offset
,
9713 ppc64_elf_howto_table
[r_type
]->name
);
9714 bfd_set_error (bfd_error_bad_value
);
9717 rel
->r_addend
= tocrel
->r_addend
;
9718 elf_section_data (sec
)->relocs
= relstart
;
9722 if (h
!= NULL
|| sym
->st_value
!= 0)
9725 rel
->r_addend
-= skip
[val
>> 3];
9726 elf_section_data (sec
)->relocs
= relstart
;
9729 if (elf_section_data (sec
)->relocs
!= relstart
)
9733 /* We shouldn't have local or global symbols defined in the TOC,
9734 but handle them anyway. */
9735 if (local_syms
!= NULL
)
9736 for (sym
= local_syms
;
9737 sym
< local_syms
+ symtab_hdr
->sh_info
;
9739 if (sym
->st_value
!= 0
9740 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9744 if (sym
->st_value
> toc
->rawsize
)
9745 i
= toc
->rawsize
>> 3;
9747 i
= sym
->st_value
>> 3;
9749 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9753 (_("%s defined on removed toc entry"),
9754 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9757 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9758 sym
->st_value
= (bfd_vma
) i
<< 3;
9761 sym
->st_value
-= skip
[i
];
9762 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9765 /* Adjust any global syms defined in this toc input section. */
9766 if (toc_inf
.global_toc_syms
)
9769 toc_inf
.skip
= skip
;
9770 toc_inf
.global_toc_syms
= FALSE
;
9771 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9775 if (toc
->reloc_count
!= 0)
9777 Elf_Internal_Shdr
*rel_hdr
;
9778 Elf_Internal_Rela
*wrel
;
9781 /* Remove unused toc relocs, and adjust those we keep. */
9782 if (toc_relocs
== NULL
)
9783 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9785 if (toc_relocs
== NULL
)
9789 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9790 if ((skip
[rel
->r_offset
>> 3]
9791 & (ref_from_discarded
| can_optimize
)) == 0)
9793 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9794 wrel
->r_info
= rel
->r_info
;
9795 wrel
->r_addend
= rel
->r_addend
;
9798 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9799 &local_syms
, NULL
, NULL
))
9802 elf_section_data (toc
)->relocs
= toc_relocs
;
9803 toc
->reloc_count
= wrel
- toc_relocs
;
9804 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9805 sz
= rel_hdr
->sh_entsize
;
9806 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9809 else if (toc_relocs
!= NULL
9810 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9813 if (local_syms
!= NULL
9814 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9816 if (!info
->keep_memory
)
9819 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9827 /* Return true iff input section I references the TOC using
9828 instructions limited to +/-32k offsets. */
9831 ppc64_elf_has_small_toc_reloc (asection
*i
)
9833 return (is_ppc64_elf (i
->owner
)
9834 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9837 /* Allocate space for one GOT entry. */
9840 allocate_got (struct elf_link_hash_entry
*h
,
9841 struct bfd_link_info
*info
,
9842 struct got_entry
*gent
)
9844 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9845 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9846 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9848 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9849 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9850 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9852 gent
->got
.offset
= got
->size
;
9853 got
->size
+= entsize
;
9855 if (h
->type
== STT_GNU_IFUNC
)
9857 htab
->elf
.irelplt
->size
+= rentsize
;
9858 htab
->got_reli_size
+= rentsize
;
9860 else if (((bfd_link_pic (info
)
9861 && !((gent
->tls_type
& TLS_TPREL
) != 0
9862 && bfd_link_executable (info
)
9863 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9864 || (htab
->elf
.dynamic_sections_created
9866 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9867 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9869 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9870 relgot
->size
+= rentsize
;
9874 /* This function merges got entries in the same toc group. */
9877 merge_got_entries (struct got_entry
**pent
)
9879 struct got_entry
*ent
, *ent2
;
9881 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9882 if (!ent
->is_indirect
)
9883 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9884 if (!ent2
->is_indirect
9885 && ent2
->addend
== ent
->addend
9886 && ent2
->tls_type
== ent
->tls_type
9887 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9889 ent2
->is_indirect
= TRUE
;
9890 ent2
->got
.ent
= ent
;
9894 /* If H is undefined, make it dynamic if that makes sense. */
9897 ensure_undef_dynamic (struct bfd_link_info
*info
,
9898 struct elf_link_hash_entry
*h
)
9900 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9902 if (htab
->dynamic_sections_created
9903 && ((info
->dynamic_undefined_weak
!= 0
9904 && h
->root
.type
== bfd_link_hash_undefweak
)
9905 || h
->root
.type
== bfd_link_hash_undefined
)
9908 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9909 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9913 /* Allocate space in .plt, .got and associated reloc sections for
9917 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9919 struct bfd_link_info
*info
;
9920 struct ppc_link_hash_table
*htab
;
9922 struct ppc_link_hash_entry
*eh
;
9923 struct got_entry
**pgent
, *gent
;
9925 if (h
->root
.type
== bfd_link_hash_indirect
)
9928 info
= (struct bfd_link_info
*) inf
;
9929 htab
= ppc_hash_table (info
);
9933 eh
= (struct ppc_link_hash_entry
*) h
;
9934 /* Run through the TLS GD got entries first if we're changing them
9936 if ((eh
->tls_mask
& (TLS_TLS
| TLS_TPRELGD
)) == (TLS_TLS
| TLS_TPRELGD
))
9937 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9938 if (gent
->got
.refcount
> 0
9939 && (gent
->tls_type
& TLS_GD
) != 0)
9941 /* This was a GD entry that has been converted to TPREL. If
9942 there happens to be a TPREL entry we can use that one. */
9943 struct got_entry
*ent
;
9944 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9945 if (ent
->got
.refcount
> 0
9946 && (ent
->tls_type
& TLS_TPREL
) != 0
9947 && ent
->addend
== gent
->addend
9948 && ent
->owner
== gent
->owner
)
9950 gent
->got
.refcount
= 0;
9954 /* If not, then we'll be using our own TPREL entry. */
9955 if (gent
->got
.refcount
!= 0)
9956 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9959 /* Remove any list entry that won't generate a word in the GOT before
9960 we call merge_got_entries. Otherwise we risk merging to empty
9962 pgent
= &h
->got
.glist
;
9963 while ((gent
= *pgent
) != NULL
)
9964 if (gent
->got
.refcount
> 0)
9966 if ((gent
->tls_type
& TLS_LD
) != 0
9969 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9970 *pgent
= gent
->next
;
9973 pgent
= &gent
->next
;
9976 *pgent
= gent
->next
;
9978 if (!htab
->do_multi_toc
)
9979 merge_got_entries (&h
->got
.glist
);
9981 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9982 if (!gent
->is_indirect
)
9984 /* Make sure this symbol is output as a dynamic symbol. */
9985 if (!ensure_undef_dynamic (info
, h
))
9988 if (!is_ppc64_elf (gent
->owner
))
9991 allocate_got (h
, info
, gent
);
9994 /* If no dynamic sections we can't have dynamic relocs, except for
9995 IFUNCs which are handled even in static executables. */
9996 if (!htab
->elf
.dynamic_sections_created
9997 && h
->type
!= STT_GNU_IFUNC
)
9998 eh
->dyn_relocs
= NULL
;
10000 /* Discard relocs on undefined symbols that must be local. */
10001 else if (h
->root
.type
== bfd_link_hash_undefined
10002 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
10003 eh
->dyn_relocs
= NULL
;
10005 /* Also discard relocs on undefined weak syms with non-default
10006 visibility, or when dynamic_undefined_weak says so. */
10007 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
10008 eh
->dyn_relocs
= NULL
;
10010 if (eh
->dyn_relocs
!= NULL
)
10012 struct elf_dyn_relocs
*p
, **pp
;
10014 /* In the shared -Bsymbolic case, discard space allocated for
10015 dynamic pc-relative relocs against symbols which turn out to
10016 be defined in regular objects. For the normal shared case,
10017 discard space for relocs that have become local due to symbol
10018 visibility changes. */
10020 if (bfd_link_pic (info
))
10022 /* Relocs that use pc_count are those that appear on a call
10023 insn, or certain REL relocs (see must_be_dyn_reloc) that
10024 can be generated via assembly. We want calls to
10025 protected symbols to resolve directly to the function
10026 rather than going via the plt. If people want function
10027 pointer comparisons to work as expected then they should
10028 avoid writing weird assembly. */
10029 if (SYMBOL_CALLS_LOCAL (info
, h
))
10031 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
10033 p
->count
-= p
->pc_count
;
10042 if (eh
->dyn_relocs
!= NULL
)
10044 /* Make sure this symbol is output as a dynamic symbol. */
10045 if (!ensure_undef_dynamic (info
, h
))
10049 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
10051 /* For the non-pic case, discard space for relocs against
10052 symbols which turn out to need copy relocs or are not
10054 if (h
->dynamic_adjusted
10056 && !ELF_COMMON_DEF_P (h
))
10058 /* Make sure this symbol is output as a dynamic symbol. */
10059 if (!ensure_undef_dynamic (info
, h
))
10062 if (h
->dynindx
== -1)
10063 eh
->dyn_relocs
= NULL
;
10066 eh
->dyn_relocs
= NULL
;
10069 /* Finally, allocate space. */
10070 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
10072 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
10073 if (eh
->elf
.type
== STT_GNU_IFUNC
)
10074 sreloc
= htab
->elf
.irelplt
;
10075 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10079 /* We might need a PLT entry when the symbol
10082 c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
10083 d) has plt16 relocs and we are linking statically. */
10084 if ((htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1)
10085 || h
->type
== STT_GNU_IFUNC
10086 || (h
->needs_plt
&& h
->dynamic_adjusted
)
10089 && !htab
->elf
.dynamic_sections_created
10090 && !htab
->can_convert_all_inline_plt
10091 && (((struct ppc_link_hash_entry
*) h
)->tls_mask
10092 & (TLS_TLS
| PLT_KEEP
)) == PLT_KEEP
))
10094 struct plt_entry
*pent
;
10095 bfd_boolean doneone
= FALSE
;
10096 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
10097 if (pent
->plt
.refcount
> 0)
10099 if (!htab
->elf
.dynamic_sections_created
10100 || h
->dynindx
== -1)
10102 if (h
->type
== STT_GNU_IFUNC
)
10104 s
= htab
->elf
.iplt
;
10105 pent
->plt
.offset
= s
->size
;
10106 s
->size
+= PLT_ENTRY_SIZE (htab
);
10107 s
= htab
->elf
.irelplt
;
10111 s
= htab
->pltlocal
;
10112 pent
->plt
.offset
= s
->size
;
10113 s
->size
+= LOCAL_PLT_ENTRY_SIZE (htab
);
10114 s
= bfd_link_pic (info
) ? htab
->relpltlocal
: NULL
;
10119 /* If this is the first .plt entry, make room for the special
10121 s
= htab
->elf
.splt
;
10123 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
10125 pent
->plt
.offset
= s
->size
;
10127 /* Make room for this entry. */
10128 s
->size
+= PLT_ENTRY_SIZE (htab
);
10130 /* Make room for the .glink code. */
10133 s
->size
+= GLINK_PLTRESOLVE_SIZE (htab
);
10136 /* We need bigger stubs past index 32767. */
10137 if (s
->size
>= GLINK_PLTRESOLVE_SIZE (htab
) + 32768*2*4)
10144 /* We also need to make an entry in the .rela.plt section. */
10145 s
= htab
->elf
.srelplt
;
10148 s
->size
+= sizeof (Elf64_External_Rela
);
10152 pent
->plt
.offset
= (bfd_vma
) -1;
10155 h
->plt
.plist
= NULL
;
10161 h
->plt
.plist
= NULL
;
10168 #define PPC_LO(v) ((v) & 0xffff)
10169 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10170 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10172 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10173 to set up space for global entry stubs. These are put in glink,
10174 after the branch table. */
10177 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
10179 struct bfd_link_info
*info
;
10180 struct ppc_link_hash_table
*htab
;
10181 struct plt_entry
*pent
;
10184 if (h
->root
.type
== bfd_link_hash_indirect
)
10187 if (!h
->pointer_equality_needed
)
10190 if (h
->def_regular
)
10194 htab
= ppc_hash_table (info
);
10198 s
= htab
->global_entry
;
10199 plt
= htab
->elf
.splt
;
10200 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
10201 if (pent
->plt
.offset
!= (bfd_vma
) -1
10202 && pent
->addend
== 0)
10204 /* For ELFv2, if this symbol is not defined in a regular file
10205 and we are not generating a shared library or pie, then we
10206 need to define the symbol in the executable on a call stub.
10207 This is to avoid text relocations. */
10208 bfd_vma off
, stub_align
, stub_off
, stub_size
;
10209 unsigned int align_power
;
10212 stub_off
= s
->size
;
10213 if (htab
->params
->plt_stub_align
>= 0)
10214 align_power
= htab
->params
->plt_stub_align
;
10216 align_power
= -htab
->params
->plt_stub_align
;
10217 /* Setting section alignment is delayed until we know it is
10218 non-empty. Otherwise the .text output section will be
10219 aligned at least to plt_stub_align even when no global
10220 entry stubs are needed. */
10221 if (s
->alignment_power
< align_power
)
10222 s
->alignment_power
= align_power
;
10223 stub_align
= (bfd_vma
) 1 << align_power
;
10224 if (htab
->params
->plt_stub_align
>= 0
10225 || ((((stub_off
+ stub_size
- 1) & -stub_align
)
10226 - (stub_off
& -stub_align
))
10227 > ((stub_size
- 1) & -stub_align
)))
10228 stub_off
= (stub_off
+ stub_align
- 1) & -stub_align
;
10229 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
10230 off
-= stub_off
+ s
->output_offset
+ s
->output_section
->vma
;
10231 /* Note that for --plt-stub-align negative we have a possible
10232 dependency between stub offset and size. Break that
10233 dependency by assuming the max stub size when calculating
10234 the stub offset. */
10235 if (PPC_HA (off
) == 0)
10237 h
->root
.type
= bfd_link_hash_defined
;
10238 h
->root
.u
.def
.section
= s
;
10239 h
->root
.u
.def
.value
= stub_off
;
10240 s
->size
= stub_off
+ stub_size
;
10246 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10247 read-only sections. */
10250 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
10254 if (h
->root
.type
== bfd_link_hash_indirect
)
10257 sec
= readonly_dynrelocs (h
);
10260 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
10262 info
->flags
|= DF_TEXTREL
;
10263 info
->callbacks
->minfo
10264 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
10265 sec
->owner
, h
->root
.root
.string
, sec
);
10267 /* Not an error, just cut short the traversal. */
10273 /* Set the sizes of the dynamic sections. */
10276 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
10277 struct bfd_link_info
*info
)
10279 struct ppc_link_hash_table
*htab
;
10282 bfd_boolean relocs
;
10284 struct got_entry
*first_tlsld
;
10286 htab
= ppc_hash_table (info
);
10290 dynobj
= htab
->elf
.dynobj
;
10291 if (dynobj
== NULL
)
10294 if (htab
->elf
.dynamic_sections_created
)
10296 /* Set the contents of the .interp section to the interpreter. */
10297 if (bfd_link_executable (info
) && !info
->nointerp
)
10299 s
= bfd_get_linker_section (dynobj
, ".interp");
10302 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10303 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10307 /* Set up .got offsets for local syms, and space for local dynamic
10309 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10311 struct got_entry
**lgot_ents
;
10312 struct got_entry
**end_lgot_ents
;
10313 struct plt_entry
**local_plt
;
10314 struct plt_entry
**end_local_plt
;
10315 unsigned char *lgot_masks
;
10316 bfd_size_type locsymcount
;
10317 Elf_Internal_Shdr
*symtab_hdr
;
10319 if (!is_ppc64_elf (ibfd
))
10322 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10324 struct ppc_dyn_relocs
*p
;
10326 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10328 if (!bfd_is_abs_section (p
->sec
)
10329 && bfd_is_abs_section (p
->sec
->output_section
))
10331 /* Input section has been discarded, either because
10332 it is a copy of a linkonce section or due to
10333 linker script /DISCARD/, so we'll be discarding
10336 else if (p
->count
!= 0)
10338 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10340 srel
= htab
->elf
.irelplt
;
10341 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10342 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10343 info
->flags
|= DF_TEXTREL
;
10348 lgot_ents
= elf_local_got_ents (ibfd
);
10352 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10353 locsymcount
= symtab_hdr
->sh_info
;
10354 end_lgot_ents
= lgot_ents
+ locsymcount
;
10355 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10356 end_local_plt
= local_plt
+ locsymcount
;
10357 lgot_masks
= (unsigned char *) end_local_plt
;
10358 s
= ppc64_elf_tdata (ibfd
)->got
;
10359 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10361 struct got_entry
**pent
, *ent
;
10364 while ((ent
= *pent
) != NULL
)
10365 if (ent
->got
.refcount
> 0)
10367 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10369 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10374 unsigned int ent_size
= 8;
10375 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10377 ent
->got
.offset
= s
->size
;
10378 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10383 s
->size
+= ent_size
;
10384 if ((*lgot_masks
& (TLS_TLS
| PLT_IFUNC
)) == PLT_IFUNC
)
10386 htab
->elf
.irelplt
->size
+= rel_size
;
10387 htab
->got_reli_size
+= rel_size
;
10389 else if (bfd_link_pic (info
)
10390 && !((ent
->tls_type
& TLS_TPREL
) != 0
10391 && bfd_link_executable (info
)))
10393 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10394 srel
->size
+= rel_size
;
10403 /* Allocate space for plt calls to local syms. */
10404 lgot_masks
= (unsigned char *) end_local_plt
;
10405 for (; local_plt
< end_local_plt
; ++local_plt
, ++lgot_masks
)
10407 struct plt_entry
*ent
;
10409 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10410 if (ent
->plt
.refcount
> 0)
10412 if ((*lgot_masks
& (TLS_TLS
| PLT_IFUNC
)) == PLT_IFUNC
)
10414 s
= htab
->elf
.iplt
;
10415 ent
->plt
.offset
= s
->size
;
10416 s
->size
+= PLT_ENTRY_SIZE (htab
);
10417 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10419 else if (htab
->can_convert_all_inline_plt
10420 || (*lgot_masks
& (TLS_TLS
| PLT_KEEP
)) != PLT_KEEP
)
10421 ent
->plt
.offset
= (bfd_vma
) -1;
10424 s
= htab
->pltlocal
;
10425 ent
->plt
.offset
= s
->size
;
10426 s
->size
+= LOCAL_PLT_ENTRY_SIZE (htab
);
10427 if (bfd_link_pic (info
))
10428 htab
->relpltlocal
->size
+= sizeof (Elf64_External_Rela
);
10432 ent
->plt
.offset
= (bfd_vma
) -1;
10436 /* Allocate global sym .plt and .got entries, and space for global
10437 sym dynamic relocs. */
10438 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10440 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10441 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10443 first_tlsld
= NULL
;
10444 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10446 struct got_entry
*ent
;
10448 if (!is_ppc64_elf (ibfd
))
10451 ent
= ppc64_tlsld_got (ibfd
);
10452 if (ent
->got
.refcount
> 0)
10454 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10456 ent
->is_indirect
= TRUE
;
10457 ent
->got
.ent
= first_tlsld
;
10461 if (first_tlsld
== NULL
)
10463 s
= ppc64_elf_tdata (ibfd
)->got
;
10464 ent
->got
.offset
= s
->size
;
10467 if (bfd_link_pic (info
))
10469 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10470 srel
->size
+= sizeof (Elf64_External_Rela
);
10475 ent
->got
.offset
= (bfd_vma
) -1;
10478 /* We now have determined the sizes of the various dynamic sections.
10479 Allocate memory for them. */
10481 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10483 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10486 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10487 /* These haven't been allocated yet; don't strip. */
10489 else if (s
== htab
->elf
.sgot
10490 || s
== htab
->elf
.splt
10491 || s
== htab
->elf
.iplt
10492 || s
== htab
->pltlocal
10493 || s
== htab
->glink
10494 || s
== htab
->global_entry
10495 || s
== htab
->elf
.sdynbss
10496 || s
== htab
->elf
.sdynrelro
)
10498 /* Strip this section if we don't need it; see the
10501 else if (s
== htab
->glink_eh_frame
)
10503 if (!bfd_is_abs_section (s
->output_section
))
10504 /* Not sized yet. */
10507 else if (CONST_STRNEQ (s
->name
, ".rela"))
10511 if (s
!= htab
->elf
.srelplt
)
10514 /* We use the reloc_count field as a counter if we need
10515 to copy relocs into the output file. */
10516 s
->reloc_count
= 0;
10521 /* It's not one of our sections, so don't allocate space. */
10527 /* If we don't need this section, strip it from the
10528 output file. This is mostly to handle .rela.bss and
10529 .rela.plt. We must create both sections in
10530 create_dynamic_sections, because they must be created
10531 before the linker maps input sections to output
10532 sections. The linker does that before
10533 adjust_dynamic_symbol is called, and it is that
10534 function which decides whether anything needs to go
10535 into these sections. */
10536 s
->flags
|= SEC_EXCLUDE
;
10540 if (bfd_is_abs_section (s
->output_section
))
10541 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10544 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10547 /* Allocate memory for the section contents. We use bfd_zalloc
10548 here in case unused entries are not reclaimed before the
10549 section's contents are written out. This should not happen,
10550 but this way if it does we get a R_PPC64_NONE reloc in .rela
10551 sections instead of garbage.
10552 We also rely on the section contents being zero when writing
10553 the GOT and .dynrelro. */
10554 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10555 if (s
->contents
== NULL
)
10559 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10561 if (!is_ppc64_elf (ibfd
))
10564 s
= ppc64_elf_tdata (ibfd
)->got
;
10565 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10568 s
->flags
|= SEC_EXCLUDE
;
10571 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10572 if (s
->contents
== NULL
)
10576 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10580 s
->flags
|= SEC_EXCLUDE
;
10583 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10584 if (s
->contents
== NULL
)
10587 s
->reloc_count
= 0;
10592 if (htab
->elf
.dynamic_sections_created
)
10594 bfd_boolean tls_opt
;
10596 /* Add some entries to the .dynamic section. We fill in the
10597 values later, in ppc64_elf_finish_dynamic_sections, but we
10598 must add the entries now so that we get the correct size for
10599 the .dynamic section. The DT_DEBUG entry is filled in by the
10600 dynamic linker and used by the debugger. */
10601 #define add_dynamic_entry(TAG, VAL) \
10602 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10604 if (bfd_link_executable (info
))
10606 if (!add_dynamic_entry (DT_DEBUG
, 0))
10610 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10612 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10613 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10614 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10615 || !add_dynamic_entry (DT_JMPREL
, 0)
10616 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10620 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10622 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10623 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10627 tls_opt
= (htab
->params
->tls_get_addr_opt
10628 && htab
->tls_get_addr_fd
!= NULL
10629 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10630 if (tls_opt
|| !htab
->opd_abi
)
10632 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10638 if (!add_dynamic_entry (DT_RELA
, 0)
10639 || !add_dynamic_entry (DT_RELASZ
, 0)
10640 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10643 /* If any dynamic relocs apply to a read-only section,
10644 then we need a DT_TEXTREL entry. */
10645 if ((info
->flags
& DF_TEXTREL
) == 0)
10646 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10648 if ((info
->flags
& DF_TEXTREL
) != 0)
10650 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10655 #undef add_dynamic_entry
10660 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10663 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10665 if (h
->plt
.plist
!= NULL
10667 && !h
->pointer_equality_needed
)
10670 return _bfd_elf_hash_symbol (h
);
10673 /* Determine the type of stub needed, if any, for a call. */
10675 static inline enum ppc_stub_type
10676 ppc_type_of_stub (asection
*input_sec
,
10677 const Elf_Internal_Rela
*rel
,
10678 struct ppc_link_hash_entry
**hash
,
10679 struct plt_entry
**plt_ent
,
10680 bfd_vma destination
,
10681 unsigned long local_off
)
10683 struct ppc_link_hash_entry
*h
= *hash
;
10685 bfd_vma branch_offset
;
10686 bfd_vma max_branch_offset
;
10687 enum elf_ppc64_reloc_type r_type
;
10691 struct plt_entry
*ent
;
10692 struct ppc_link_hash_entry
*fdh
= h
;
10694 && h
->oh
->is_func_descriptor
)
10696 fdh
= ppc_follow_link (h
->oh
);
10700 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10701 if (ent
->addend
== rel
->r_addend
10702 && ent
->plt
.offset
!= (bfd_vma
) -1)
10705 return ppc_stub_plt_call
;
10708 /* Here, we know we don't have a plt entry. If we don't have a
10709 either a defined function descriptor or a defined entry symbol
10710 in a regular object file, then it is pointless trying to make
10711 any other type of stub. */
10712 if (!is_static_defined (&fdh
->elf
)
10713 && !is_static_defined (&h
->elf
))
10714 return ppc_stub_none
;
10716 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10718 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10719 struct plt_entry
**local_plt
= (struct plt_entry
**)
10720 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10721 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10723 if (local_plt
[r_symndx
] != NULL
)
10725 struct plt_entry
*ent
;
10727 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10728 if (ent
->addend
== rel
->r_addend
10729 && ent
->plt
.offset
!= (bfd_vma
) -1)
10732 return ppc_stub_plt_call
;
10737 /* Determine where the call point is. */
10738 location
= (input_sec
->output_offset
10739 + input_sec
->output_section
->vma
10742 branch_offset
= destination
- location
;
10743 r_type
= ELF64_R_TYPE (rel
->r_info
);
10745 /* Determine if a long branch stub is needed. */
10746 max_branch_offset
= 1 << 25;
10747 if (r_type
== R_PPC64_REL14
10748 || r_type
== R_PPC64_REL14_BRTAKEN
10749 || r_type
== R_PPC64_REL14_BRNTAKEN
)
10750 max_branch_offset
= 1 << 15;
10752 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10753 /* We need a stub. Figure out whether a long_branch or plt_branch
10754 is needed later. */
10755 return ppc_stub_long_branch
;
10757 return ppc_stub_none
;
10760 /* With power7 weakly ordered memory model, it is possible for ld.so
10761 to update a plt entry in one thread and have another thread see a
10762 stale zero toc entry. To avoid this we need some sort of acquire
10763 barrier in the call stub. One solution is to make the load of the
10764 toc word seem to appear to depend on the load of the function entry
10765 word. Another solution is to test for r2 being zero, and branch to
10766 the appropriate glink entry if so.
10768 . fake dep barrier compare
10769 . ld 12,xxx(2) ld 12,xxx(2)
10770 . mtctr 12 mtctr 12
10771 . xor 11,12,12 ld 2,xxx+8(2)
10772 . add 2,2,11 cmpldi 2,0
10773 . ld 2,xxx+8(2) bnectr+
10774 . bctr b <glink_entry>
10776 The solution involving the compare turns out to be faster, so
10777 that's what we use unless the branch won't reach. */
10779 #define ALWAYS_USE_FAKE_DEP 0
10780 #define ALWAYS_EMIT_R2SAVE 0
10782 static inline unsigned int
10783 plt_stub_size (struct ppc_link_hash_table
*htab
,
10784 struct ppc_stub_hash_entry
*stub_entry
,
10787 unsigned size
= 12;
10789 if (ALWAYS_EMIT_R2SAVE
10790 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10792 if (PPC_HA (off
) != 0)
10797 if (htab
->params
->plt_static_chain
)
10799 if (htab
->params
->plt_thread_safe
10800 && htab
->elf
.dynamic_sections_created
10801 && stub_entry
->h
!= NULL
10802 && stub_entry
->h
->elf
.dynindx
!= -1)
10804 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10807 if (stub_entry
->h
!= NULL
10808 && (stub_entry
->h
== htab
->tls_get_addr_fd
10809 || stub_entry
->h
== htab
->tls_get_addr
)
10810 && htab
->params
->tls_get_addr_opt
)
10813 if (ALWAYS_EMIT_R2SAVE
10814 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10820 /* Depending on the sign of plt_stub_align:
10821 If positive, return the padding to align to a 2**plt_stub_align
10823 If negative, if this stub would cross fewer 2**plt_stub_align
10824 boundaries if we align, then return the padding needed to do so. */
10826 static inline unsigned int
10827 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10828 struct ppc_stub_hash_entry
*stub_entry
,
10832 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10833 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10835 if (htab
->params
->plt_stub_align
>= 0)
10837 stub_align
= 1 << htab
->params
->plt_stub_align
;
10838 if ((stub_off
& (stub_align
- 1)) != 0)
10839 return stub_align
- (stub_off
& (stub_align
- 1));
10843 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10844 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10845 > ((stub_size
- 1) & -stub_align
))
10846 return stub_align
- (stub_off
& (stub_align
- 1));
10850 /* Build a .plt call stub. */
10852 static inline bfd_byte
*
10853 build_plt_stub (struct ppc_link_hash_table
*htab
,
10854 struct ppc_stub_hash_entry
*stub_entry
,
10855 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10857 bfd
*obfd
= htab
->params
->stub_bfd
;
10858 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10859 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10860 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10861 && htab
->elf
.dynamic_sections_created
10862 && stub_entry
->h
!= NULL
10863 && stub_entry
->h
->elf
.dynindx
!= -1);
10864 bfd_boolean use_fake_dep
= plt_thread_safe
;
10865 bfd_vma cmp_branch_off
= 0;
10867 if (!ALWAYS_USE_FAKE_DEP
10870 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10871 || stub_entry
->h
== htab
->tls_get_addr
)
10872 && htab
->params
->tls_get_addr_opt
))
10874 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10875 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10876 / PLT_ENTRY_SIZE (htab
));
10877 bfd_vma glinkoff
= GLINK_PLTRESOLVE_SIZE (htab
) + pltindex
* 8;
10880 if (pltindex
> 32768)
10881 glinkoff
+= (pltindex
- 32768) * 4;
10883 + htab
->glink
->output_offset
10884 + htab
->glink
->output_section
->vma
);
10885 from
= (p
- stub_entry
->group
->stub_sec
->contents
10886 + 4 * (ALWAYS_EMIT_R2SAVE
10887 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10888 + 4 * (PPC_HA (offset
) != 0)
10889 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10890 != PPC_HA (offset
))
10891 + 4 * (plt_static_chain
!= 0)
10893 + stub_entry
->group
->stub_sec
->output_offset
10894 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10895 cmp_branch_off
= to
- from
;
10896 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10899 if (PPC_HA (offset
) != 0)
10903 if (ALWAYS_EMIT_R2SAVE
10904 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10905 r
[0].r_offset
+= 4;
10906 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10907 r
[1].r_offset
= r
[0].r_offset
+ 4;
10908 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10909 r
[1].r_addend
= r
[0].r_addend
;
10912 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10914 r
[2].r_offset
= r
[1].r_offset
+ 4;
10915 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10916 r
[2].r_addend
= r
[0].r_addend
;
10920 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10921 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10922 r
[2].r_addend
= r
[0].r_addend
+ 8;
10923 if (plt_static_chain
)
10925 r
[3].r_offset
= r
[2].r_offset
+ 4;
10926 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10927 r
[3].r_addend
= r
[0].r_addend
+ 16;
10932 if (ALWAYS_EMIT_R2SAVE
10933 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10934 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10937 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10938 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10942 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10943 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10946 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10948 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10951 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10956 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10957 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10959 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10960 if (plt_static_chain
)
10961 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10968 if (ALWAYS_EMIT_R2SAVE
10969 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10970 r
[0].r_offset
+= 4;
10971 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10974 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10976 r
[1].r_offset
= r
[0].r_offset
+ 4;
10977 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10978 r
[1].r_addend
= r
[0].r_addend
;
10982 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10983 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10984 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10985 if (plt_static_chain
)
10987 r
[2].r_offset
= r
[1].r_offset
+ 4;
10988 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10989 r
[2].r_addend
= r
[0].r_addend
+ 8;
10994 if (ALWAYS_EMIT_R2SAVE
10995 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10996 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10997 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10999 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
11001 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
11004 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
11009 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
11010 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
11012 if (plt_static_chain
)
11013 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
11014 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
11017 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
11019 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
11020 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
11021 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
11024 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
11028 /* Build a special .plt call stub for __tls_get_addr. */
11030 #define LD_R11_0R3 0xe9630000
11031 #define LD_R12_0R3 0xe9830000
11032 #define MR_R0_R3 0x7c601b78
11033 #define CMPDI_R11_0 0x2c2b0000
11034 #define ADD_R3_R12_R13 0x7c6c6a14
11035 #define BEQLR 0x4d820020
11036 #define MR_R3_R0 0x7c030378
11037 #define STD_R11_0R1 0xf9610000
11038 #define BCTRL 0x4e800421
11039 #define LD_R11_0R1 0xe9610000
11040 #define MTLR_R11 0x7d6803a6
11042 static inline bfd_byte
*
11043 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
11044 struct ppc_stub_hash_entry
*stub_entry
,
11045 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
11047 bfd
*obfd
= htab
->params
->stub_bfd
;
11049 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
11050 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
11051 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
11052 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
11053 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
11054 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
11055 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
11057 r
[0].r_offset
+= 7 * 4;
11058 if (!ALWAYS_EMIT_R2SAVE
11059 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
11060 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
11062 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
11063 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
11066 r
[0].r_offset
+= 2 * 4;
11067 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
11068 bfd_put_32 (obfd
, BCTRL
, p
- 4);
11070 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
11071 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
11072 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
11073 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
11078 static Elf_Internal_Rela
*
11079 get_relocs (asection
*sec
, int count
)
11081 Elf_Internal_Rela
*relocs
;
11082 struct bfd_elf_section_data
*elfsec_data
;
11084 elfsec_data
= elf_section_data (sec
);
11085 relocs
= elfsec_data
->relocs
;
11086 if (relocs
== NULL
)
11088 bfd_size_type relsize
;
11089 relsize
= sec
->reloc_count
* sizeof (*relocs
);
11090 relocs
= bfd_alloc (sec
->owner
, relsize
);
11091 if (relocs
== NULL
)
11093 elfsec_data
->relocs
= relocs
;
11094 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
11095 sizeof (Elf_Internal_Shdr
));
11096 if (elfsec_data
->rela
.hdr
== NULL
)
11098 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
11099 * sizeof (Elf64_External_Rela
));
11100 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
11101 sec
->reloc_count
= 0;
11103 relocs
+= sec
->reloc_count
;
11104 sec
->reloc_count
+= count
;
11109 get_r2off (struct bfd_link_info
*info
,
11110 struct ppc_stub_hash_entry
*stub_entry
)
11112 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11113 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
11117 /* Support linking -R objects. Get the toc pointer from the
11120 if (!htab
->opd_abi
)
11122 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
11123 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
11125 if (strcmp (opd
->name
, ".opd") != 0
11126 || opd
->reloc_count
!= 0)
11128 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%pT'\n"),
11129 stub_entry
->h
->elf
.root
.root
.string
);
11130 bfd_set_error (bfd_error_bad_value
);
11131 return (bfd_vma
) -1;
11133 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
11134 return (bfd_vma
) -1;
11135 r2off
= bfd_get_64 (opd
->owner
, buf
);
11136 r2off
-= elf_gp (info
->output_bfd
);
11138 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
11143 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11145 struct ppc_stub_hash_entry
*stub_entry
;
11146 struct ppc_branch_hash_entry
*br_entry
;
11147 struct bfd_link_info
*info
;
11148 struct ppc_link_hash_table
*htab
;
11152 Elf_Internal_Rela
*r
;
11155 /* Massage our args to the form they really have. */
11156 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11159 htab
= ppc_hash_table (info
);
11163 /* Make a note of the offset within the stubs for this entry. */
11164 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11165 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
11167 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
11168 switch (stub_entry
->stub_type
)
11170 case ppc_stub_long_branch
:
11171 case ppc_stub_long_branch_r2off
:
11172 /* Branches are relative. This is where we are going to. */
11173 dest
= (stub_entry
->target_value
11174 + stub_entry
->target_section
->output_offset
11175 + stub_entry
->target_section
->output_section
->vma
);
11176 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11179 /* And this is where we are coming from. */
11180 off
-= (stub_entry
->stub_offset
11181 + stub_entry
->group
->stub_sec
->output_offset
11182 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11185 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11187 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11189 if (r2off
== (bfd_vma
) -1)
11191 htab
->stub_error
= TRUE
;
11194 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
11196 if (PPC_HA (r2off
) != 0)
11198 bfd_put_32 (htab
->params
->stub_bfd
,
11199 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
11202 if (PPC_LO (r2off
) != 0)
11204 bfd_put_32 (htab
->params
->stub_bfd
,
11205 ADDI_R2_R2
| PPC_LO (r2off
), p
);
11210 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), p
);
11213 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
11216 (_("long branch stub `%s' offset overflow"),
11217 stub_entry
->root
.string
);
11218 htab
->stub_error
= TRUE
;
11222 if (info
->emitrelocations
)
11224 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
11227 r
->r_offset
= p
- 4 - stub_entry
->group
->stub_sec
->contents
;
11228 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
11229 r
->r_addend
= dest
;
11230 if (stub_entry
->h
!= NULL
)
11232 struct elf_link_hash_entry
**hashes
;
11233 unsigned long symndx
;
11234 struct ppc_link_hash_entry
*h
;
11236 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
11237 if (hashes
== NULL
)
11239 bfd_size_type hsize
;
11241 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
11242 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
11243 if (hashes
== NULL
)
11245 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
11246 htab
->stub_globals
= 1;
11248 symndx
= htab
->stub_globals
++;
11250 hashes
[symndx
] = &h
->elf
;
11251 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
11252 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
11253 h
= ppc_follow_link (h
->oh
);
11254 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
11255 /* H is an opd symbol. The addend must be zero. */
11259 off
= (h
->elf
.root
.u
.def
.value
11260 + h
->elf
.root
.u
.def
.section
->output_offset
11261 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
11262 r
->r_addend
-= off
;
11268 case ppc_stub_plt_branch
:
11269 case ppc_stub_plt_branch_r2off
:
11270 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11271 stub_entry
->root
.string
+ 9,
11273 if (br_entry
== NULL
)
11275 _bfd_error_handler (_("can't find branch stub `%s'"),
11276 stub_entry
->root
.string
);
11277 htab
->stub_error
= TRUE
;
11281 dest
= (stub_entry
->target_value
11282 + stub_entry
->target_section
->output_offset
11283 + stub_entry
->target_section
->output_section
->vma
);
11284 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11285 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11287 bfd_put_64 (htab
->brlt
->owner
, dest
,
11288 htab
->brlt
->contents
+ br_entry
->offset
);
11290 if (br_entry
->iter
== htab
->stub_iteration
)
11292 br_entry
->iter
= 0;
11294 if (htab
->relbrlt
!= NULL
)
11296 /* Create a reloc for the branch lookup table entry. */
11297 Elf_Internal_Rela rela
;
11300 rela
.r_offset
= (br_entry
->offset
11301 + htab
->brlt
->output_offset
11302 + htab
->brlt
->output_section
->vma
);
11303 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11304 rela
.r_addend
= dest
;
11306 rl
= htab
->relbrlt
->contents
;
11307 rl
+= (htab
->relbrlt
->reloc_count
++
11308 * sizeof (Elf64_External_Rela
));
11309 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
11311 else if (info
->emitrelocations
)
11313 r
= get_relocs (htab
->brlt
, 1);
11316 /* brlt, being SEC_LINKER_CREATED does not go through the
11317 normal reloc processing. Symbols and offsets are not
11318 translated from input file to output file form, so
11319 set up the offset per the output file. */
11320 r
->r_offset
= (br_entry
->offset
11321 + htab
->brlt
->output_offset
11322 + htab
->brlt
->output_section
->vma
);
11323 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11324 r
->r_addend
= dest
;
11328 dest
= (br_entry
->offset
11329 + htab
->brlt
->output_offset
11330 + htab
->brlt
->output_section
->vma
);
11333 - elf_gp (info
->output_bfd
)
11334 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11336 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11338 info
->callbacks
->einfo
11339 (_("%P: linkage table error against `%pT'\n"),
11340 stub_entry
->root
.string
);
11341 bfd_set_error (bfd_error_bad_value
);
11342 htab
->stub_error
= TRUE
;
11346 if (info
->emitrelocations
)
11348 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11351 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11352 if (bfd_big_endian (info
->output_bfd
))
11353 r
[0].r_offset
+= 2;
11354 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11355 r
[0].r_offset
+= 4;
11356 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11357 r
[0].r_addend
= dest
;
11358 if (PPC_HA (off
) != 0)
11360 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11361 r
[1].r_offset
= r
[0].r_offset
+ 4;
11362 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11363 r
[1].r_addend
= r
[0].r_addend
;
11368 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11370 if (PPC_HA (off
) != 0)
11372 bfd_put_32 (htab
->params
->stub_bfd
,
11373 ADDIS_R12_R2
| PPC_HA (off
), p
);
11375 bfd_put_32 (htab
->params
->stub_bfd
,
11376 LD_R12_0R12
| PPC_LO (off
), p
);
11379 bfd_put_32 (htab
->params
->stub_bfd
,
11380 LD_R12_0R2
| PPC_LO (off
), p
);
11384 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11386 if (r2off
== (bfd_vma
) -1)
11388 htab
->stub_error
= TRUE
;
11392 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), p
);
11394 if (PPC_HA (off
) != 0)
11396 bfd_put_32 (htab
->params
->stub_bfd
,
11397 ADDIS_R12_R2
| PPC_HA (off
), p
);
11399 bfd_put_32 (htab
->params
->stub_bfd
,
11400 LD_R12_0R12
| PPC_LO (off
), p
);
11403 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), p
);
11405 if (PPC_HA (r2off
) != 0)
11408 bfd_put_32 (htab
->params
->stub_bfd
,
11409 ADDIS_R2_R2
| PPC_HA (r2off
), p
);
11411 if (PPC_LO (r2off
) != 0)
11414 bfd_put_32 (htab
->params
->stub_bfd
,
11415 ADDI_R2_R2
| PPC_LO (r2off
), p
);
11419 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, p
);
11421 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, p
);
11425 case ppc_stub_plt_call
:
11426 case ppc_stub_plt_call_r2save
:
11427 if (stub_entry
->h
!= NULL
11428 && stub_entry
->h
->is_func_descriptor
11429 && stub_entry
->h
->oh
!= NULL
)
11431 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11433 /* If the old-ABI "dot-symbol" is undefined make it weak so
11434 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11435 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11436 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11437 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11438 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11441 /* Now build the stub. */
11442 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11443 if (dest
>= (bfd_vma
) -2)
11446 plt
= htab
->elf
.splt
;
11447 if (!htab
->elf
.dynamic_sections_created
11448 || stub_entry
->h
== NULL
11449 || stub_entry
->h
->elf
.dynindx
== -1)
11451 if (stub_entry
->symtype
== STT_GNU_IFUNC
)
11452 plt
= htab
->elf
.iplt
;
11454 plt
= htab
->pltlocal
;
11457 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11460 - elf_gp (info
->output_bfd
)
11461 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11463 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11465 info
->callbacks
->einfo
11466 /* xgettext:c-format */
11467 (_("%P: linkage table error against `%pT'\n"),
11468 stub_entry
->h
!= NULL
11469 ? stub_entry
->h
->elf
.root
.root
.string
11471 bfd_set_error (bfd_error_bad_value
);
11472 htab
->stub_error
= TRUE
;
11476 if (htab
->params
->plt_stub_align
!= 0)
11478 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11480 stub_entry
->group
->stub_sec
->size
+= pad
;
11481 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11486 if (info
->emitrelocations
)
11488 r
= get_relocs (stub_entry
->group
->stub_sec
,
11489 ((PPC_HA (off
) != 0)
11491 ? 2 + (htab
->params
->plt_static_chain
11492 && PPC_HA (off
+ 16) == PPC_HA (off
))
11496 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11497 if (bfd_big_endian (info
->output_bfd
))
11498 r
[0].r_offset
+= 2;
11499 r
[0].r_addend
= dest
;
11501 if (stub_entry
->h
!= NULL
11502 && (stub_entry
->h
== htab
->tls_get_addr_fd
11503 || stub_entry
->h
== htab
->tls_get_addr
)
11504 && htab
->params
->tls_get_addr_opt
)
11505 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11507 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11510 case ppc_stub_save_res
:
11518 stub_entry
->group
->stub_sec
->size
+= p
- loc
;
11520 if (htab
->params
->emit_stub_syms
)
11522 struct elf_link_hash_entry
*h
;
11525 const char *const stub_str
[] = { "long_branch",
11526 "long_branch_r2off",
11528 "plt_branch_r2off",
11532 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11533 len2
= strlen (stub_entry
->root
.string
);
11534 name
= bfd_malloc (len1
+ len2
+ 2);
11537 memcpy (name
, stub_entry
->root
.string
, 9);
11538 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11539 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11540 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11543 if (h
->root
.type
== bfd_link_hash_new
)
11545 h
->root
.type
= bfd_link_hash_defined
;
11546 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11547 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11548 h
->ref_regular
= 1;
11549 h
->def_regular
= 1;
11550 h
->ref_regular_nonweak
= 1;
11551 h
->forced_local
= 1;
11553 h
->root
.linker_def
= 1;
11560 /* As above, but don't actually build the stub. Just bump offset so
11561 we know stub section sizes, and select plt_branch stubs where
11562 long_branch stubs won't do. */
11565 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11567 struct ppc_stub_hash_entry
*stub_entry
;
11568 struct bfd_link_info
*info
;
11569 struct ppc_link_hash_table
*htab
;
11573 /* Massage our args to the form they really have. */
11574 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11577 htab
= ppc_hash_table (info
);
11581 if (stub_entry
->h
!= NULL
11582 && stub_entry
->h
->save_res
11583 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11584 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11586 /* Don't make stubs to out-of-line register save/restore
11587 functions. Instead, emit copies of the functions. */
11588 stub_entry
->group
->needs_save_res
= 1;
11589 stub_entry
->stub_type
= ppc_stub_save_res
;
11593 if (stub_entry
->stub_type
== ppc_stub_plt_call
11594 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11597 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11598 if (off
>= (bfd_vma
) -2)
11600 plt
= htab
->elf
.splt
;
11601 if (!htab
->elf
.dynamic_sections_created
11602 || stub_entry
->h
== NULL
11603 || stub_entry
->h
->elf
.dynindx
== -1)
11605 if (stub_entry
->symtype
== STT_GNU_IFUNC
)
11606 plt
= htab
->elf
.iplt
;
11608 plt
= htab
->pltlocal
;
11610 off
+= (plt
->output_offset
11611 + plt
->output_section
->vma
11612 - elf_gp (info
->output_bfd
)
11613 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11615 size
= plt_stub_size (htab
, stub_entry
, off
);
11616 if (stub_entry
->h
!= NULL
11617 && (stub_entry
->h
== htab
->tls_get_addr_fd
11618 || stub_entry
->h
== htab
->tls_get_addr
)
11619 && htab
->params
->tls_get_addr_opt
11620 && (ALWAYS_EMIT_R2SAVE
11621 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11622 stub_entry
->group
->tls_get_addr_opt_bctrl
11623 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11625 if (htab
->params
->plt_stub_align
)
11626 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11627 if (info
->emitrelocations
)
11629 stub_entry
->group
->stub_sec
->reloc_count
11630 += ((PPC_HA (off
) != 0)
11632 ? 2 + (htab
->params
->plt_static_chain
11633 && PPC_HA (off
+ 16) == PPC_HA (off
))
11635 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11640 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11643 bfd_vma local_off
= 0;
11645 off
= (stub_entry
->target_value
11646 + stub_entry
->target_section
->output_offset
11647 + stub_entry
->target_section
->output_section
->vma
);
11648 off
-= (stub_entry
->group
->stub_sec
->size
11649 + stub_entry
->group
->stub_sec
->output_offset
11650 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11652 /* Reset the stub type from the plt variant in case we now
11653 can reach with a shorter stub. */
11654 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11655 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11658 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11660 r2off
= get_r2off (info
, stub_entry
);
11661 if (r2off
== (bfd_vma
) -1)
11663 htab
->stub_error
= TRUE
;
11667 if (PPC_HA (r2off
) != 0)
11669 if (PPC_LO (r2off
) != 0)
11674 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11676 /* If the branch offset is too big, use a ppc_stub_plt_branch.
11677 Do the same for -R objects without function descriptors. */
11678 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11679 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11681 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11683 struct ppc_branch_hash_entry
*br_entry
;
11685 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11686 stub_entry
->root
.string
+ 9,
11688 if (br_entry
== NULL
)
11690 _bfd_error_handler (_("can't build branch stub `%s'"),
11691 stub_entry
->root
.string
);
11692 htab
->stub_error
= TRUE
;
11696 if (br_entry
->iter
!= htab
->stub_iteration
)
11698 br_entry
->iter
= htab
->stub_iteration
;
11699 br_entry
->offset
= htab
->brlt
->size
;
11700 htab
->brlt
->size
+= 8;
11702 if (htab
->relbrlt
!= NULL
)
11703 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11704 else if (info
->emitrelocations
)
11706 htab
->brlt
->reloc_count
+= 1;
11707 htab
->brlt
->flags
|= SEC_RELOC
;
11711 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11712 off
= (br_entry
->offset
11713 + htab
->brlt
->output_offset
11714 + htab
->brlt
->output_section
->vma
11715 - elf_gp (info
->output_bfd
)
11716 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11718 if (info
->emitrelocations
)
11720 stub_entry
->group
->stub_sec
->reloc_count
11721 += 1 + (PPC_HA (off
) != 0);
11722 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11725 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11728 if (PPC_HA (off
) != 0)
11734 if (PPC_HA (off
) != 0)
11737 if (PPC_HA (r2off
) != 0)
11739 if (PPC_LO (r2off
) != 0)
11743 else if (info
->emitrelocations
)
11745 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11746 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11750 stub_entry
->group
->stub_sec
->size
+= size
;
11754 /* Set up various things so that we can make a list of input sections
11755 for each output section included in the link. Returns -1 on error,
11756 0 when no stubs will be needed, and 1 on success. */
11759 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11763 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11768 htab
->sec_info_arr_size
= _bfd_section_id
;
11769 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11770 htab
->sec_info
= bfd_zmalloc (amt
);
11771 if (htab
->sec_info
== NULL
)
11774 /* Set toc_off for com, und, abs and ind sections. */
11775 for (id
= 0; id
< 3; id
++)
11776 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11781 /* Set up for first pass at multitoc partitioning. */
11784 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11786 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11788 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11789 htab
->toc_bfd
= NULL
;
11790 htab
->toc_first_sec
= NULL
;
11793 /* The linker repeatedly calls this function for each TOC input section
11794 and linker generated GOT section. Group input bfds such that the toc
11795 within a group is less than 64k in size. */
11798 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11800 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11801 bfd_vma addr
, off
, limit
;
11806 if (!htab
->second_toc_pass
)
11808 /* Keep track of the first .toc or .got section for this input bfd. */
11809 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11813 htab
->toc_bfd
= isec
->owner
;
11814 htab
->toc_first_sec
= isec
;
11817 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11818 off
= addr
- htab
->toc_curr
;
11819 limit
= 0x80008000;
11820 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11822 if (off
+ isec
->size
> limit
)
11824 addr
= (htab
->toc_first_sec
->output_offset
11825 + htab
->toc_first_sec
->output_section
->vma
);
11826 htab
->toc_curr
= addr
;
11827 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11830 /* toc_curr is the base address of this toc group. Set elf_gp
11831 for the input section to be the offset relative to the
11832 output toc base plus 0x8000. Making the input elf_gp an
11833 offset allows us to move the toc as a whole without
11834 recalculating input elf_gp. */
11835 off
= htab
->toc_curr
- elf_gp (info
->output_bfd
);
11836 off
+= TOC_BASE_OFF
;
11838 /* Die if someone uses a linker script that doesn't keep input
11839 file .toc and .got together. */
11841 && elf_gp (isec
->owner
) != 0
11842 && elf_gp (isec
->owner
) != off
)
11845 elf_gp (isec
->owner
) = off
;
11849 /* During the second pass toc_first_sec points to the start of
11850 a toc group, and toc_curr is used to track the old elf_gp.
11851 We use toc_bfd to ensure we only look at each bfd once. */
11852 if (htab
->toc_bfd
== isec
->owner
)
11854 htab
->toc_bfd
= isec
->owner
;
11856 if (htab
->toc_first_sec
== NULL
11857 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11859 htab
->toc_curr
= elf_gp (isec
->owner
);
11860 htab
->toc_first_sec
= isec
;
11862 addr
= (htab
->toc_first_sec
->output_offset
11863 + htab
->toc_first_sec
->output_section
->vma
);
11864 off
= addr
- elf_gp (info
->output_bfd
) + TOC_BASE_OFF
;
11865 elf_gp (isec
->owner
) = off
;
11870 /* Called via elf_link_hash_traverse to merge GOT entries for global
11874 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11876 if (h
->root
.type
== bfd_link_hash_indirect
)
11879 merge_got_entries (&h
->got
.glist
);
11884 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11888 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11890 struct got_entry
*gent
;
11892 if (h
->root
.type
== bfd_link_hash_indirect
)
11895 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11896 if (!gent
->is_indirect
)
11897 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11901 /* Called on the first multitoc pass after the last call to
11902 ppc64_elf_next_toc_section. This function removes duplicate GOT
11906 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11908 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11909 struct bfd
*ibfd
, *ibfd2
;
11910 bfd_boolean done_something
;
11912 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11914 if (!htab
->do_multi_toc
)
11917 /* Merge global sym got entries within a toc group. */
11918 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11920 /* And tlsld_got. */
11921 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11923 struct got_entry
*ent
, *ent2
;
11925 if (!is_ppc64_elf (ibfd
))
11928 ent
= ppc64_tlsld_got (ibfd
);
11929 if (!ent
->is_indirect
11930 && ent
->got
.offset
!= (bfd_vma
) -1)
11932 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11934 if (!is_ppc64_elf (ibfd2
))
11937 ent2
= ppc64_tlsld_got (ibfd2
);
11938 if (!ent2
->is_indirect
11939 && ent2
->got
.offset
!= (bfd_vma
) -1
11940 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11942 ent2
->is_indirect
= TRUE
;
11943 ent2
->got
.ent
= ent
;
11949 /* Zap sizes of got sections. */
11950 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11951 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11952 htab
->got_reli_size
= 0;
11954 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11956 asection
*got
, *relgot
;
11958 if (!is_ppc64_elf (ibfd
))
11961 got
= ppc64_elf_tdata (ibfd
)->got
;
11964 got
->rawsize
= got
->size
;
11966 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11967 relgot
->rawsize
= relgot
->size
;
11972 /* Now reallocate the got, local syms first. We don't need to
11973 allocate section contents again since we never increase size. */
11974 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11976 struct got_entry
**lgot_ents
;
11977 struct got_entry
**end_lgot_ents
;
11978 struct plt_entry
**local_plt
;
11979 struct plt_entry
**end_local_plt
;
11980 unsigned char *lgot_masks
;
11981 bfd_size_type locsymcount
;
11982 Elf_Internal_Shdr
*symtab_hdr
;
11985 if (!is_ppc64_elf (ibfd
))
11988 lgot_ents
= elf_local_got_ents (ibfd
);
11992 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11993 locsymcount
= symtab_hdr
->sh_info
;
11994 end_lgot_ents
= lgot_ents
+ locsymcount
;
11995 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11996 end_local_plt
= local_plt
+ locsymcount
;
11997 lgot_masks
= (unsigned char *) end_local_plt
;
11998 s
= ppc64_elf_tdata (ibfd
)->got
;
11999 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
12001 struct got_entry
*ent
;
12003 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
12005 unsigned int ent_size
= 8;
12006 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
12008 ent
->got
.offset
= s
->size
;
12009 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
12014 s
->size
+= ent_size
;
12015 if ((*lgot_masks
& (TLS_TLS
| PLT_IFUNC
)) == PLT_IFUNC
)
12017 htab
->elf
.irelplt
->size
+= rel_size
;
12018 htab
->got_reli_size
+= rel_size
;
12020 else if (bfd_link_pic (info
)
12021 && !((ent
->tls_type
& TLS_TPREL
) != 0
12022 && bfd_link_executable (info
)))
12024 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
12025 srel
->size
+= rel_size
;
12031 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
12033 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
12035 struct got_entry
*ent
;
12037 if (!is_ppc64_elf (ibfd
))
12040 ent
= ppc64_tlsld_got (ibfd
);
12041 if (!ent
->is_indirect
12042 && ent
->got
.offset
!= (bfd_vma
) -1)
12044 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
12045 ent
->got
.offset
= s
->size
;
12047 if (bfd_link_pic (info
))
12049 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
12050 srel
->size
+= sizeof (Elf64_External_Rela
);
12055 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
12056 if (!done_something
)
12057 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
12061 if (!is_ppc64_elf (ibfd
))
12064 got
= ppc64_elf_tdata (ibfd
)->got
;
12067 done_something
= got
->rawsize
!= got
->size
;
12068 if (done_something
)
12073 if (done_something
)
12074 (*htab
->params
->layout_sections_again
) ();
12076 /* Set up for second pass over toc sections to recalculate elf_gp
12077 on input sections. */
12078 htab
->toc_bfd
= NULL
;
12079 htab
->toc_first_sec
= NULL
;
12080 htab
->second_toc_pass
= TRUE
;
12081 return done_something
;
12084 /* Called after second pass of multitoc partitioning. */
12087 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
12089 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12091 /* After the second pass, toc_curr tracks the TOC offset used
12092 for code sections below in ppc64_elf_next_input_section. */
12093 htab
->toc_curr
= TOC_BASE_OFF
;
12096 /* No toc references were found in ISEC. If the code in ISEC makes no
12097 calls, then there's no need to use toc adjusting stubs when branching
12098 into ISEC. Actually, indirect calls from ISEC are OK as they will
12099 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
12100 needed, and 2 if a cyclical call-graph was found but no other reason
12101 for a stub was detected. If called from the top level, a return of
12102 2 means the same as a return of 0. */
12105 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
12109 /* Mark this section as checked. */
12110 isec
->call_check_done
= 1;
12112 /* We know none of our code bearing sections will need toc stubs. */
12113 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
12116 if (isec
->size
== 0)
12119 if (isec
->output_section
== NULL
)
12123 if (isec
->reloc_count
!= 0)
12125 Elf_Internal_Rela
*relstart
, *rel
;
12126 Elf_Internal_Sym
*local_syms
;
12127 struct ppc_link_hash_table
*htab
;
12129 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
12130 info
->keep_memory
);
12131 if (relstart
== NULL
)
12134 /* Look for branches to outside of this section. */
12136 htab
= ppc_hash_table (info
);
12140 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
12142 enum elf_ppc64_reloc_type r_type
;
12143 unsigned long r_symndx
;
12144 struct elf_link_hash_entry
*h
;
12145 struct ppc_link_hash_entry
*eh
;
12146 Elf_Internal_Sym
*sym
;
12148 struct _opd_sec_data
*opd
;
12152 r_type
= ELF64_R_TYPE (rel
->r_info
);
12153 if (r_type
!= R_PPC64_REL24
12154 && r_type
!= R_PPC64_REL14
12155 && r_type
!= R_PPC64_REL14_BRTAKEN
12156 && r_type
!= R_PPC64_REL14_BRNTAKEN
12157 && r_type
!= R_PPC64_PLTCALL
)
12160 r_symndx
= ELF64_R_SYM (rel
->r_info
);
12161 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
12168 /* Calls to dynamic lib functions go through a plt call stub
12170 eh
= (struct ppc_link_hash_entry
*) h
;
12172 && (eh
->elf
.plt
.plist
!= NULL
12174 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
12180 if (sym_sec
== NULL
)
12181 /* Ignore other undefined symbols. */
12184 /* Assume branches to other sections not included in the
12185 link need stubs too, to cover -R and absolute syms. */
12186 if (sym_sec
->output_section
== NULL
)
12193 sym_value
= sym
->st_value
;
12196 if (h
->root
.type
!= bfd_link_hash_defined
12197 && h
->root
.type
!= bfd_link_hash_defweak
)
12199 sym_value
= h
->root
.u
.def
.value
;
12201 sym_value
+= rel
->r_addend
;
12203 /* If this branch reloc uses an opd sym, find the code section. */
12204 opd
= get_opd_info (sym_sec
);
12207 if (h
== NULL
&& opd
->adjust
!= NULL
)
12211 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12213 /* Assume deleted functions won't ever be called. */
12215 sym_value
+= adjust
;
12218 dest
= opd_entry_value (sym_sec
, sym_value
,
12219 &sym_sec
, NULL
, FALSE
);
12220 if (dest
== (bfd_vma
) -1)
12225 + sym_sec
->output_offset
12226 + sym_sec
->output_section
->vma
);
12228 /* Ignore branch to self. */
12229 if (sym_sec
== isec
)
12232 /* If the called function uses the toc, we need a stub. */
12233 if (sym_sec
->has_toc_reloc
12234 || sym_sec
->makes_toc_func_call
)
12240 /* Assume any branch that needs a long branch stub might in fact
12241 need a plt_branch stub. A plt_branch stub uses r2. */
12242 else if (dest
- (isec
->output_offset
12243 + isec
->output_section
->vma
12244 + rel
->r_offset
) + (1 << 25)
12245 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12253 /* If calling back to a section in the process of being
12254 tested, we can't say for sure that no toc adjusting stubs
12255 are needed, so don't return zero. */
12256 else if (sym_sec
->call_check_in_progress
)
12259 /* Branches to another section that itself doesn't have any TOC
12260 references are OK. Recursively call ourselves to check. */
12261 else if (!sym_sec
->call_check_done
)
12265 /* Mark current section as indeterminate, so that other
12266 sections that call back to current won't be marked as
12268 isec
->call_check_in_progress
= 1;
12269 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
12270 isec
->call_check_in_progress
= 0;
12281 if (local_syms
!= NULL
12282 && (elf_symtab_hdr (isec
->owner
).contents
12283 != (unsigned char *) local_syms
))
12285 if (elf_section_data (isec
)->relocs
!= relstart
)
12290 && isec
->map_head
.s
!= NULL
12291 && (strcmp (isec
->output_section
->name
, ".init") == 0
12292 || strcmp (isec
->output_section
->name
, ".fini") == 0))
12294 if (isec
->map_head
.s
->has_toc_reloc
12295 || isec
->map_head
.s
->makes_toc_func_call
)
12297 else if (!isec
->map_head
.s
->call_check_done
)
12300 isec
->call_check_in_progress
= 1;
12301 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
12302 isec
->call_check_in_progress
= 0;
12309 isec
->makes_toc_func_call
= 1;
12314 /* The linker repeatedly calls this function for each input section,
12315 in the order that input sections are linked into output sections.
12316 Build lists of input sections to determine groupings between which
12317 we may insert linker stubs. */
12320 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12322 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12327 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12328 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12330 /* This happens to make the list in reverse order,
12331 which is what we want. */
12332 htab
->sec_info
[isec
->id
].u
.list
12333 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12334 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12337 if (htab
->multi_toc_needed
)
12339 /* Analyse sections that aren't already flagged as needing a
12340 valid toc pointer. Exclude .fixup for the linux kernel.
12341 .fixup contains branches, but only back to the function that
12342 hit an exception. */
12343 if (!(isec
->has_toc_reloc
12344 || (isec
->flags
& SEC_CODE
) == 0
12345 || strcmp (isec
->name
, ".fixup") == 0
12346 || isec
->call_check_done
))
12348 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12351 /* Make all sections use the TOC assigned for this object file.
12352 This will be wrong for pasted sections; We fix that in
12353 check_pasted_section(). */
12354 if (elf_gp (isec
->owner
) != 0)
12355 htab
->toc_curr
= elf_gp (isec
->owner
);
12358 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12362 /* Check that all .init and .fini sections use the same toc, if they
12363 have toc relocs. */
12366 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12368 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12372 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12373 bfd_vma toc_off
= 0;
12376 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12377 if (i
->has_toc_reloc
)
12380 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12381 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12386 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12387 if (i
->makes_toc_func_call
)
12389 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12393 /* Make sure the whole pasted function uses the same toc offset. */
12395 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12396 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12402 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12404 return (check_pasted_section (info
, ".init")
12405 & check_pasted_section (info
, ".fini"));
12408 /* See whether we can group stub sections together. Grouping stub
12409 sections may result in fewer stubs. More importantly, we need to
12410 put all .init* and .fini* stubs at the beginning of the .init or
12411 .fini output sections respectively, because glibc splits the
12412 _init and _fini functions into multiple parts. Putting a stub in
12413 the middle of a function is not a good idea. */
12416 group_sections (struct bfd_link_info
*info
,
12417 bfd_size_type stub_group_size
,
12418 bfd_boolean stubs_always_before_branch
)
12420 struct ppc_link_hash_table
*htab
;
12422 bfd_boolean suppress_size_errors
;
12424 htab
= ppc_hash_table (info
);
12428 suppress_size_errors
= FALSE
;
12429 if (stub_group_size
== 1)
12431 /* Default values. */
12432 if (stubs_always_before_branch
)
12433 stub_group_size
= 0x1e00000;
12435 stub_group_size
= 0x1c00000;
12436 suppress_size_errors
= TRUE
;
12439 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12443 if (osec
->id
>= htab
->sec_info_arr_size
)
12446 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12447 while (tail
!= NULL
)
12451 bfd_size_type total
;
12452 bfd_boolean big_sec
;
12454 struct map_stub
*group
;
12455 bfd_size_type group_size
;
12458 total
= tail
->size
;
12459 group_size
= (ppc64_elf_section_data (tail
) != NULL
12460 && ppc64_elf_section_data (tail
)->has_14bit_branch
12461 ? stub_group_size
>> 10 : stub_group_size
);
12463 big_sec
= total
> group_size
;
12464 if (big_sec
&& !suppress_size_errors
)
12465 /* xgettext:c-format */
12466 _bfd_error_handler (_("%pB section %pA exceeds stub group size"),
12467 tail
->owner
, tail
);
12468 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12470 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12471 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12472 < (ppc64_elf_section_data (prev
) != NULL
12473 && ppc64_elf_section_data (prev
)->has_14bit_branch
12474 ? (group_size
= stub_group_size
>> 10) : group_size
))
12475 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12478 /* OK, the size from the start of CURR to the end is less
12479 than group_size and thus can be handled by one stub
12480 section. (or the tail section is itself larger than
12481 group_size, in which case we may be toast.) We should
12482 really be keeping track of the total size of stubs added
12483 here, as stubs contribute to the final output section
12484 size. That's a little tricky, and this way will only
12485 break if stubs added make the total size more than 2^25,
12486 ie. for the default stub_group_size, if stubs total more
12487 than 2097152 bytes, or nearly 75000 plt call stubs. */
12488 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12491 group
->link_sec
= curr
;
12492 group
->stub_sec
= NULL
;
12493 group
->needs_save_res
= 0;
12494 group
->tls_get_addr_opt_bctrl
= -1u;
12495 group
->next
= htab
->group
;
12496 htab
->group
= group
;
12499 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12500 /* Set up this stub group. */
12501 htab
->sec_info
[tail
->id
].u
.group
= group
;
12503 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12505 /* But wait, there's more! Input sections up to group_size
12506 bytes before the stub section can be handled by it too.
12507 Don't do this if we have a really large section after the
12508 stubs, as adding more stubs increases the chance that
12509 branches may not reach into the stub section. */
12510 if (!stubs_always_before_branch
&& !big_sec
)
12513 while (prev
!= NULL
12514 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12515 < (ppc64_elf_section_data (prev
) != NULL
12516 && ppc64_elf_section_data (prev
)->has_14bit_branch
12517 ? (group_size
= stub_group_size
>> 10) : group_size
))
12518 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12521 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12522 htab
->sec_info
[tail
->id
].u
.group
= group
;
12531 static const unsigned char glink_eh_frame_cie
[] =
12533 0, 0, 0, 16, /* length. */
12534 0, 0, 0, 0, /* id. */
12535 1, /* CIE version. */
12536 'z', 'R', 0, /* Augmentation string. */
12537 4, /* Code alignment. */
12538 0x78, /* Data alignment. */
12540 1, /* Augmentation size. */
12541 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12542 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12546 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12548 size_t this_size
= 17;
12549 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12551 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12554 else if (to_bctrl
< 256)
12556 else if (to_bctrl
< 65536)
12562 this_size
= (this_size
+ align
- 1) & -align
;
12566 /* Stripping output sections is normally done before dynamic section
12567 symbols have been allocated. This function is called later, and
12568 handles cases like htab->brlt which is mapped to its own output
12572 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12574 if (isec
->size
== 0
12575 && isec
->output_section
->size
== 0
12576 && !(isec
->output_section
->flags
& SEC_KEEP
)
12577 && !bfd_section_removed_from_list (info
->output_bfd
,
12578 isec
->output_section
)
12579 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12581 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12582 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12583 info
->output_bfd
->section_count
--;
12587 /* Determine and set the size of the stub section for a final link.
12589 The basic idea here is to examine all the relocations looking for
12590 PC-relative calls to a target that is unreachable with a "bl"
12594 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12596 bfd_size_type stub_group_size
;
12597 bfd_boolean stubs_always_before_branch
;
12598 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12603 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12604 htab
->params
->plt_thread_safe
= 1;
12605 if (!htab
->opd_abi
)
12606 htab
->params
->plt_thread_safe
= 0;
12607 else if (htab
->params
->plt_thread_safe
== -1)
12609 static const char *const thread_starter
[] =
12613 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12615 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12616 "mq_notify", "create_timer",
12621 "GOMP_parallel_start",
12622 "GOMP_parallel_loop_static",
12623 "GOMP_parallel_loop_static_start",
12624 "GOMP_parallel_loop_dynamic",
12625 "GOMP_parallel_loop_dynamic_start",
12626 "GOMP_parallel_loop_guided",
12627 "GOMP_parallel_loop_guided_start",
12628 "GOMP_parallel_loop_runtime",
12629 "GOMP_parallel_loop_runtime_start",
12630 "GOMP_parallel_sections",
12631 "GOMP_parallel_sections_start",
12637 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12639 struct elf_link_hash_entry
*h
;
12640 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12641 FALSE
, FALSE
, TRUE
);
12642 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12643 if (htab
->params
->plt_thread_safe
)
12647 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12648 if (htab
->params
->group_size
< 0)
12649 stub_group_size
= -htab
->params
->group_size
;
12651 stub_group_size
= htab
->params
->group_size
;
12653 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12656 #define STUB_SHRINK_ITER 20
12657 /* Loop until no stubs added. After iteration 20 of this loop we may
12658 exit on a stub section shrinking. This is to break out of a
12659 pathological case where adding stubs on one iteration decreases
12660 section gaps (perhaps due to alignment), which then requires
12661 fewer or smaller stubs on the next iteration. */
12666 unsigned int bfd_indx
;
12667 struct map_stub
*group
;
12669 htab
->stub_iteration
+= 1;
12671 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12673 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12675 Elf_Internal_Shdr
*symtab_hdr
;
12677 Elf_Internal_Sym
*local_syms
= NULL
;
12679 if (!is_ppc64_elf (input_bfd
))
12682 /* We'll need the symbol table in a second. */
12683 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12684 if (symtab_hdr
->sh_info
== 0)
12687 /* Walk over each section attached to the input bfd. */
12688 for (section
= input_bfd
->sections
;
12690 section
= section
->next
)
12692 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12694 /* If there aren't any relocs, then there's nothing more
12696 if ((section
->flags
& SEC_RELOC
) == 0
12697 || (section
->flags
& SEC_ALLOC
) == 0
12698 || (section
->flags
& SEC_LOAD
) == 0
12699 || (section
->flags
& SEC_CODE
) == 0
12700 || section
->reloc_count
== 0)
12703 /* If this section is a link-once section that will be
12704 discarded, then don't create any stubs. */
12705 if (section
->output_section
== NULL
12706 || section
->output_section
->owner
!= info
->output_bfd
)
12709 /* Get the relocs. */
12711 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12712 info
->keep_memory
);
12713 if (internal_relocs
== NULL
)
12714 goto error_ret_free_local
;
12716 /* Now examine each relocation. */
12717 irela
= internal_relocs
;
12718 irelaend
= irela
+ section
->reloc_count
;
12719 for (; irela
< irelaend
; irela
++)
12721 enum elf_ppc64_reloc_type r_type
;
12722 unsigned int r_indx
;
12723 enum ppc_stub_type stub_type
;
12724 struct ppc_stub_hash_entry
*stub_entry
;
12725 asection
*sym_sec
, *code_sec
;
12726 bfd_vma sym_value
, code_value
;
12727 bfd_vma destination
;
12728 unsigned long local_off
;
12729 bfd_boolean ok_dest
;
12730 struct ppc_link_hash_entry
*hash
;
12731 struct ppc_link_hash_entry
*fdh
;
12732 struct elf_link_hash_entry
*h
;
12733 Elf_Internal_Sym
*sym
;
12735 const asection
*id_sec
;
12736 struct _opd_sec_data
*opd
;
12737 struct plt_entry
*plt_ent
;
12739 r_type
= ELF64_R_TYPE (irela
->r_info
);
12740 r_indx
= ELF64_R_SYM (irela
->r_info
);
12742 if (r_type
>= R_PPC64_max
)
12744 bfd_set_error (bfd_error_bad_value
);
12745 goto error_ret_free_internal
;
12748 /* Only look for stubs on branch instructions. */
12749 if (r_type
!= R_PPC64_REL24
12750 && r_type
!= R_PPC64_REL14
12751 && r_type
!= R_PPC64_REL14_BRTAKEN
12752 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12755 /* Now determine the call target, its name, value,
12757 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12758 r_indx
, input_bfd
))
12759 goto error_ret_free_internal
;
12760 hash
= (struct ppc_link_hash_entry
*) h
;
12767 sym_value
= sym
->st_value
;
12768 if (sym_sec
!= NULL
12769 && sym_sec
->output_section
!= NULL
)
12772 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12773 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12775 sym_value
= hash
->elf
.root
.u
.def
.value
;
12776 if (sym_sec
->output_section
!= NULL
)
12779 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12780 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12782 /* Recognise an old ABI func code entry sym, and
12783 use the func descriptor sym instead if it is
12785 if (hash
->elf
.root
.root
.string
[0] == '.'
12786 && hash
->oh
!= NULL
)
12788 fdh
= ppc_follow_link (hash
->oh
);
12789 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12790 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12792 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12793 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12794 if (sym_sec
->output_section
!= NULL
)
12803 bfd_set_error (bfd_error_bad_value
);
12804 goto error_ret_free_internal
;
12811 sym_value
+= irela
->r_addend
;
12812 destination
= (sym_value
12813 + sym_sec
->output_offset
12814 + sym_sec
->output_section
->vma
);
12815 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12820 code_sec
= sym_sec
;
12821 code_value
= sym_value
;
12822 opd
= get_opd_info (sym_sec
);
12827 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12829 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12832 code_value
+= adjust
;
12833 sym_value
+= adjust
;
12835 dest
= opd_entry_value (sym_sec
, sym_value
,
12836 &code_sec
, &code_value
, FALSE
);
12837 if (dest
!= (bfd_vma
) -1)
12839 destination
= dest
;
12842 /* Fixup old ABI sym to point at code
12844 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12845 hash
->elf
.root
.u
.def
.section
= code_sec
;
12846 hash
->elf
.root
.u
.def
.value
= code_value
;
12851 /* Determine what (if any) linker stub is needed. */
12853 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12854 &plt_ent
, destination
,
12857 if (stub_type
!= ppc_stub_plt_call
)
12859 /* Check whether we need a TOC adjusting stub.
12860 Since the linker pastes together pieces from
12861 different object files when creating the
12862 _init and _fini functions, it may be that a
12863 call to what looks like a local sym is in
12864 fact a call needing a TOC adjustment. */
12865 if ((code_sec
!= NULL
12866 && code_sec
->output_section
!= NULL
12867 && (htab
->sec_info
[code_sec
->id
].toc_off
12868 != htab
->sec_info
[section
->id
].toc_off
)
12869 && (code_sec
->has_toc_reloc
12870 || code_sec
->makes_toc_func_call
))
12871 || (((hash
? hash
->elf
.other
: sym
->st_other
)
12872 & STO_PPC64_LOCAL_MASK
)
12873 == 1 << STO_PPC64_LOCAL_BIT
))
12874 stub_type
= ppc_stub_long_branch_r2off
;
12877 if (stub_type
== ppc_stub_none
)
12880 /* __tls_get_addr calls might be eliminated. */
12881 if (stub_type
!= ppc_stub_plt_call
12883 && (hash
== htab
->tls_get_addr
12884 || hash
== htab
->tls_get_addr_fd
)
12885 && section
->has_tls_reloc
12886 && irela
!= internal_relocs
)
12888 /* Get tls info. */
12889 unsigned char *tls_mask
;
12891 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12892 irela
- 1, input_bfd
))
12893 goto error_ret_free_internal
;
12894 if ((*tls_mask
& TLS_TLS
) != 0)
12898 if (stub_type
== ppc_stub_plt_call
)
12901 && htab
->params
->plt_localentry0
!= 0
12902 && is_elfv2_localentry0 (&hash
->elf
))
12903 htab
->has_plt_localentry0
= 1;
12904 else if (irela
+ 1 < irelaend
12905 && irela
[1].r_offset
== irela
->r_offset
+ 4
12906 && (ELF64_R_TYPE (irela
[1].r_info
)
12907 == R_PPC64_TOCSAVE
))
12909 if (!tocsave_find (htab
, INSERT
,
12910 &local_syms
, irela
+ 1, input_bfd
))
12911 goto error_ret_free_internal
;
12914 stub_type
= ppc_stub_plt_call_r2save
;
12917 /* Support for grouping stub sections. */
12918 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12920 /* Get the name of this stub. */
12921 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12923 goto error_ret_free_internal
;
12925 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12926 stub_name
, FALSE
, FALSE
);
12927 if (stub_entry
!= NULL
)
12929 /* The proper stub has already been created. */
12931 if (stub_type
== ppc_stub_plt_call_r2save
)
12932 stub_entry
->stub_type
= stub_type
;
12936 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12937 if (stub_entry
== NULL
)
12940 error_ret_free_internal
:
12941 if (elf_section_data (section
)->relocs
== NULL
)
12942 free (internal_relocs
);
12943 error_ret_free_local
:
12944 if (local_syms
!= NULL
12945 && (symtab_hdr
->contents
12946 != (unsigned char *) local_syms
))
12951 stub_entry
->stub_type
= stub_type
;
12952 if (stub_type
!= ppc_stub_plt_call
12953 && stub_type
!= ppc_stub_plt_call_r2save
)
12955 stub_entry
->target_value
= code_value
;
12956 stub_entry
->target_section
= code_sec
;
12960 stub_entry
->target_value
= sym_value
;
12961 stub_entry
->target_section
= sym_sec
;
12963 stub_entry
->h
= hash
;
12964 stub_entry
->plt_ent
= plt_ent
;
12965 stub_entry
->symtype
12966 = hash
? hash
->elf
.type
: ELF_ST_TYPE (sym
->st_info
);
12967 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12969 if (stub_entry
->h
!= NULL
)
12970 htab
->stub_globals
+= 1;
12973 /* We're done with the internal relocs, free them. */
12974 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12975 free (internal_relocs
);
12978 if (local_syms
!= NULL
12979 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12981 if (!info
->keep_memory
)
12984 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12988 /* We may have added some stubs. Find out the new size of the
12990 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12991 if (group
->stub_sec
!= NULL
)
12993 asection
*stub_sec
= group
->stub_sec
;
12995 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12996 || stub_sec
->rawsize
< stub_sec
->size
)
12997 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12998 stub_sec
->rawsize
= stub_sec
->size
;
12999 stub_sec
->size
= 0;
13000 stub_sec
->reloc_count
= 0;
13001 stub_sec
->flags
&= ~SEC_RELOC
;
13004 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
13005 || htab
->brlt
->rawsize
< htab
->brlt
->size
)
13006 htab
->brlt
->rawsize
= htab
->brlt
->size
;
13007 htab
->brlt
->size
= 0;
13008 htab
->brlt
->reloc_count
= 0;
13009 htab
->brlt
->flags
&= ~SEC_RELOC
;
13010 if (htab
->relbrlt
!= NULL
)
13011 htab
->relbrlt
->size
= 0;
13013 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
13015 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13016 if (group
->needs_save_res
)
13017 group
->stub_sec
->size
+= htab
->sfpr
->size
;
13019 if (info
->emitrelocations
13020 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13022 htab
->glink
->reloc_count
= 1;
13023 htab
->glink
->flags
|= SEC_RELOC
;
13026 if (htab
->glink_eh_frame
!= NULL
13027 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
13028 && htab
->glink_eh_frame
->output_section
->size
> 8)
13030 size_t size
= 0, align
= 4;
13032 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13033 if (group
->stub_sec
!= NULL
)
13034 size
+= stub_eh_frame_size (group
, align
);
13035 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13036 size
+= (24 + align
- 1) & -align
;
13038 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
13039 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
13040 size
= (size
+ align
- 1) & -align
;
13041 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
13042 htab
->glink_eh_frame
->size
= size
;
13045 if (htab
->params
->plt_stub_align
!= 0)
13046 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13047 if (group
->stub_sec
!= NULL
)
13049 int align
= abs (htab
->params
->plt_stub_align
);
13050 group
->stub_sec
->size
13051 = (group
->stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
13054 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13055 if (group
->stub_sec
!= NULL
13056 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
13057 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13058 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
13062 && (htab
->brlt
->rawsize
== htab
->brlt
->size
13063 || (htab
->stub_iteration
> STUB_SHRINK_ITER
13064 && htab
->brlt
->rawsize
> htab
->brlt
->size
))
13065 && (htab
->glink_eh_frame
== NULL
13066 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
13069 /* Ask the linker to do its stuff. */
13070 (*htab
->params
->layout_sections_again
) ();
13073 if (htab
->glink_eh_frame
!= NULL
13074 && htab
->glink_eh_frame
->size
!= 0)
13077 bfd_byte
*p
, *last_fde
;
13078 size_t last_fde_len
, size
, align
, pad
;
13079 struct map_stub
*group
;
13081 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
13084 htab
->glink_eh_frame
->contents
= p
;
13088 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
13089 /* CIE length (rewrite in case little-endian). */
13090 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
13091 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
13092 p
+= last_fde_len
+ 4;
13094 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13095 if (group
->stub_sec
!= NULL
)
13098 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
13100 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
13103 val
= p
- htab
->glink_eh_frame
->contents
;
13104 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
13106 /* Offset to stub section, written later. */
13108 /* stub section size. */
13109 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
13111 /* Augmentation. */
13113 if (group
->tls_get_addr_opt_bctrl
!= -1u)
13115 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
13117 /* This FDE needs more than just the default.
13118 Describe __tls_get_addr_opt stub LR. */
13120 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
13121 else if (to_bctrl
< 256)
13123 *p
++ = DW_CFA_advance_loc1
;
13126 else if (to_bctrl
< 65536)
13128 *p
++ = DW_CFA_advance_loc2
;
13129 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
13134 *p
++ = DW_CFA_advance_loc4
;
13135 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
13138 *p
++ = DW_CFA_offset_extended_sf
;
13140 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
13141 *p
++ = DW_CFA_advance_loc
+ 4;
13142 *p
++ = DW_CFA_restore_extended
;
13146 p
= last_fde
+ last_fde_len
+ 4;
13148 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13151 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
13153 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
13156 val
= p
- htab
->glink_eh_frame
->contents
;
13157 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
13159 /* Offset to .glink, written later. */
13162 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
13164 /* Augmentation. */
13167 *p
++ = DW_CFA_advance_loc
+ 1;
13168 *p
++ = DW_CFA_register
;
13170 *p
++ = htab
->opd_abi
? 12 : 0;
13171 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
13172 *p
++ = DW_CFA_restore_extended
;
13174 p
+= ((24 + align
- 1) & -align
) - 24;
13176 /* Subsume any padding into the last FDE if user .eh_frame
13177 sections are aligned more than glink_eh_frame. Otherwise any
13178 zero padding will be seen as a terminator. */
13179 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
13180 size
= p
- htab
->glink_eh_frame
->contents
;
13181 pad
= ((size
+ align
- 1) & -align
) - size
;
13182 htab
->glink_eh_frame
->size
= size
+ pad
;
13183 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
13186 maybe_strip_output (info
, htab
->brlt
);
13187 if (htab
->glink_eh_frame
!= NULL
)
13188 maybe_strip_output (info
, htab
->glink_eh_frame
);
13193 /* Called after we have determined section placement. If sections
13194 move, we'll be called again. Provide a value for TOCstart. */
13197 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
13200 bfd_vma TOCstart
, adjust
;
13204 struct elf_link_hash_entry
*h
;
13205 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
13207 if (is_elf_hash_table (htab
)
13208 && htab
->hgot
!= NULL
)
13212 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
13213 if (is_elf_hash_table (htab
))
13217 && h
->root
.type
== bfd_link_hash_defined
13218 && !h
->root
.linker_def
13219 && (!is_elf_hash_table (htab
)
13220 || h
->def_regular
))
13222 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
13223 + h
->root
.u
.def
.section
->output_offset
13224 + h
->root
.u
.def
.section
->output_section
->vma
);
13225 _bfd_set_gp_value (obfd
, TOCstart
);
13230 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13231 order. The TOC starts where the first of these sections starts. */
13232 s
= bfd_get_section_by_name (obfd
, ".got");
13233 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13234 s
= bfd_get_section_by_name (obfd
, ".toc");
13235 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13236 s
= bfd_get_section_by_name (obfd
, ".tocbss");
13237 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13238 s
= bfd_get_section_by_name (obfd
, ".plt");
13239 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13241 /* This may happen for
13242 o references to TOC base (SYM@toc / TOC[tc0]) without a
13244 o bad linker script
13245 o --gc-sections and empty TOC sections
13247 FIXME: Warn user? */
13249 /* Look for a likely section. We probably won't even be
13251 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13252 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
13254 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13257 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13258 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
13259 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13262 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13263 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
13267 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13268 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
13274 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
13276 /* Force alignment. */
13277 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
13278 TOCstart
-= adjust
;
13279 _bfd_set_gp_value (obfd
, TOCstart
);
13281 if (info
!= NULL
&& s
!= NULL
)
13283 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13287 if (htab
->elf
.hgot
!= NULL
)
13289 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
13290 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
13295 struct bfd_link_hash_entry
*bh
= NULL
;
13296 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
13297 s
, TOC_BASE_OFF
- adjust
,
13298 NULL
, FALSE
, FALSE
, &bh
);
13304 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13305 write out any global entry stubs, and PLT relocations. */
13308 build_global_entry_stubs_and_plt (struct elf_link_hash_entry
*h
, void *inf
)
13310 struct bfd_link_info
*info
;
13311 struct ppc_link_hash_table
*htab
;
13312 struct plt_entry
*ent
;
13315 if (h
->root
.type
== bfd_link_hash_indirect
)
13319 htab
= ppc_hash_table (info
);
13323 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13324 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13326 /* This symbol has an entry in the procedure linkage
13327 table. Set it up. */
13328 Elf_Internal_Rela rela
;
13329 asection
*plt
, *relplt
;
13332 if (!htab
->elf
.dynamic_sections_created
13333 || h
->dynindx
== -1)
13335 if (!(h
->def_regular
13336 && (h
->root
.type
== bfd_link_hash_defined
13337 || h
->root
.type
== bfd_link_hash_defweak
)))
13339 if (h
->type
== STT_GNU_IFUNC
)
13341 plt
= htab
->elf
.iplt
;
13342 relplt
= htab
->elf
.irelplt
;
13343 htab
->local_ifunc_resolver
= 1;
13345 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13347 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13351 plt
= htab
->pltlocal
;
13352 if (bfd_link_pic (info
))
13354 relplt
= htab
->relpltlocal
;
13356 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_SLOT
);
13358 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13363 rela
.r_addend
= (h
->root
.u
.def
.value
13364 + h
->root
.u
.def
.section
->output_offset
13365 + h
->root
.u
.def
.section
->output_section
->vma
13368 if (relplt
== NULL
)
13370 loc
= plt
->contents
+ ent
->plt
.offset
;
13371 bfd_put_64 (info
->output_bfd
, rela
.r_addend
, loc
);
13374 bfd_vma toc
= elf_gp (info
->output_bfd
);
13375 toc
+= htab
->sec_info
[h
->root
.u
.def
.section
->id
].toc_off
;
13376 bfd_put_64 (info
->output_bfd
, toc
, loc
+ 8);
13381 rela
.r_offset
= (plt
->output_section
->vma
13382 + plt
->output_offset
13383 + ent
->plt
.offset
);
13384 loc
= relplt
->contents
+ (relplt
->reloc_count
++
13385 * sizeof (Elf64_External_Rela
));
13386 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, loc
);
13391 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
13392 + htab
->elf
.splt
->output_offset
13393 + ent
->plt
.offset
);
13394 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13395 rela
.r_addend
= ent
->addend
;
13396 loc
= (htab
->elf
.srelplt
->contents
13397 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
13398 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
13399 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
13400 htab
->maybe_local_ifunc_resolver
= 1;
13401 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, loc
);
13405 if (!h
->pointer_equality_needed
)
13408 if (h
->def_regular
)
13411 s
= htab
->global_entry
;
13412 if (s
== NULL
|| s
->size
== 0)
13415 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13416 if (ent
->plt
.offset
!= (bfd_vma
) -1
13417 && ent
->addend
== 0)
13423 p
= s
->contents
+ h
->root
.u
.def
.value
;
13424 plt
= htab
->elf
.splt
;
13425 if (!htab
->elf
.dynamic_sections_created
13426 || h
->dynindx
== -1)
13428 if (h
->type
== STT_GNU_IFUNC
)
13429 plt
= htab
->elf
.iplt
;
13431 plt
= htab
->pltlocal
;
13433 off
= ent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13434 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13436 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13438 info
->callbacks
->einfo
13439 (_("%P: linkage table error against `%pT'\n"),
13440 h
->root
.root
.string
);
13441 bfd_set_error (bfd_error_bad_value
);
13442 htab
->stub_error
= TRUE
;
13445 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13446 if (htab
->params
->emit_stub_syms
)
13448 size_t len
= strlen (h
->root
.root
.string
);
13449 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13454 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13455 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13458 if (h
->root
.type
== bfd_link_hash_new
)
13460 h
->root
.type
= bfd_link_hash_defined
;
13461 h
->root
.u
.def
.section
= s
;
13462 h
->root
.u
.def
.value
= p
- s
->contents
;
13463 h
->ref_regular
= 1;
13464 h
->def_regular
= 1;
13465 h
->ref_regular_nonweak
= 1;
13466 h
->forced_local
= 1;
13468 h
->root
.linker_def
= 1;
13472 if (PPC_HA (off
) != 0)
13474 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13477 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13479 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13481 bfd_put_32 (s
->owner
, BCTR
, p
);
13487 /* Write PLT relocs for locals. */
13490 write_plt_relocs_for_local_syms (struct bfd_link_info
*info
)
13492 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13495 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
13497 struct got_entry
**lgot_ents
, **end_lgot_ents
;
13498 struct plt_entry
**local_plt
, **lplt
, **end_local_plt
;
13499 Elf_Internal_Shdr
*symtab_hdr
;
13500 bfd_size_type locsymcount
;
13501 Elf_Internal_Sym
*local_syms
= NULL
;
13502 struct plt_entry
*ent
;
13504 if (!is_ppc64_elf (ibfd
))
13507 lgot_ents
= elf_local_got_ents (ibfd
);
13511 symtab_hdr
= &elf_symtab_hdr (ibfd
);
13512 locsymcount
= symtab_hdr
->sh_info
;
13513 end_lgot_ents
= lgot_ents
+ locsymcount
;
13514 local_plt
= (struct plt_entry
**) end_lgot_ents
;
13515 end_local_plt
= local_plt
+ locsymcount
;
13516 for (lplt
= local_plt
; lplt
< end_local_plt
; ++lplt
)
13517 for (ent
= *lplt
; ent
!= NULL
; ent
= ent
->next
)
13518 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13520 Elf_Internal_Sym
*sym
;
13522 asection
*plt
, *relplt
;
13526 if (!get_sym_h (NULL
, &sym
, &sym_sec
, NULL
, &local_syms
,
13527 lplt
- local_plt
, ibfd
))
13529 if (local_syms
!= NULL
13530 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
13535 val
= sym
->st_value
+ ent
->addend
;
13536 val
+= PPC64_LOCAL_ENTRY_OFFSET (sym
->st_other
);
13537 if (sym_sec
!= NULL
&& sym_sec
->output_section
!= NULL
)
13538 val
+= sym_sec
->output_offset
+ sym_sec
->output_section
->vma
;
13540 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13542 htab
->local_ifunc_resolver
= 1;
13543 plt
= htab
->elf
.iplt
;
13544 relplt
= htab
->elf
.irelplt
;
13548 plt
= htab
->pltlocal
;
13549 relplt
= bfd_link_pic (info
) ? htab
->relpltlocal
: NULL
;
13552 if (relplt
== NULL
)
13554 loc
= plt
->contents
+ ent
->plt
.offset
;
13555 bfd_put_64 (info
->output_bfd
, val
, loc
);
13558 bfd_vma toc
= elf_gp (ibfd
);
13559 bfd_put_64 (info
->output_bfd
, toc
, loc
+ 8);
13564 Elf_Internal_Rela rela
;
13565 rela
.r_offset
= (ent
->plt
.offset
13566 + plt
->output_offset
13567 + plt
->output_section
->vma
);
13568 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13571 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13573 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13578 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_SLOT
);
13580 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13582 rela
.r_addend
= val
;
13583 loc
= relplt
->contents
+ (relplt
->reloc_count
++
13584 * sizeof (Elf64_External_Rela
));
13585 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, loc
);
13589 if (local_syms
!= NULL
13590 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
13592 if (!info
->keep_memory
)
13595 symtab_hdr
->contents
= (unsigned char *) local_syms
;
13601 /* Build all the stubs associated with the current output file.
13602 The stubs are kept in a hash table attached to the main linker
13603 hash table. This function is called via gldelf64ppc_finish. */
13606 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13609 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13610 struct map_stub
*group
;
13611 asection
*stub_sec
;
13613 int stub_sec_count
= 0;
13618 /* Allocate memory to hold the linker stubs. */
13619 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13620 if ((stub_sec
= group
->stub_sec
) != NULL
13621 && stub_sec
->size
!= 0)
13623 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13624 if (stub_sec
->contents
== NULL
)
13626 stub_sec
->size
= 0;
13629 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13634 /* Build the .glink plt call stub. */
13635 if (htab
->params
->emit_stub_syms
)
13637 struct elf_link_hash_entry
*h
;
13638 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13639 TRUE
, FALSE
, FALSE
);
13642 if (h
->root
.type
== bfd_link_hash_new
)
13644 h
->root
.type
= bfd_link_hash_defined
;
13645 h
->root
.u
.def
.section
= htab
->glink
;
13646 h
->root
.u
.def
.value
= 8;
13647 h
->ref_regular
= 1;
13648 h
->def_regular
= 1;
13649 h
->ref_regular_nonweak
= 1;
13650 h
->forced_local
= 1;
13652 h
->root
.linker_def
= 1;
13655 plt0
= (htab
->elf
.splt
->output_section
->vma
13656 + htab
->elf
.splt
->output_offset
13658 if (info
->emitrelocations
)
13660 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13663 r
->r_offset
= (htab
->glink
->output_offset
13664 + htab
->glink
->output_section
->vma
);
13665 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13666 r
->r_addend
= plt0
;
13668 p
= htab
->glink
->contents
;
13669 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13670 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13674 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13676 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13678 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13680 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13682 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13684 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13686 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13688 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13690 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13692 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13697 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13699 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13701 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13703 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13705 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13707 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13709 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13711 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13713 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13715 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13717 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13719 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13721 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13724 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13726 BFD_ASSERT (p
== htab
->glink
->contents
+ GLINK_PLTRESOLVE_SIZE (htab
));
13728 /* Build the .glink lazy link call stubs. */
13730 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
13736 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13741 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13743 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13748 bfd_put_32 (htab
->glink
->owner
,
13749 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13755 /* Build .glink global entry stubs, and PLT relocs for globals. */
13756 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs_and_plt
, info
);
13758 if (!write_plt_relocs_for_local_syms (info
))
13761 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13763 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13765 if (htab
->brlt
->contents
== NULL
)
13768 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13770 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13771 htab
->relbrlt
->size
);
13772 if (htab
->relbrlt
->contents
== NULL
)
13776 /* Build the stubs as directed by the stub hash table. */
13777 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13779 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13780 if (group
->needs_save_res
)
13781 group
->stub_sec
->size
+= htab
->sfpr
->size
;
13783 if (htab
->relbrlt
!= NULL
)
13784 htab
->relbrlt
->reloc_count
= 0;
13786 if (htab
->params
->plt_stub_align
!= 0)
13787 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13788 if ((stub_sec
= group
->stub_sec
) != NULL
)
13790 int align
= abs (htab
->params
->plt_stub_align
);
13791 stub_sec
->size
= (stub_sec
->size
+ (1 << align
) - 1) & -(1 << align
);
13794 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13795 if (group
->needs_save_res
)
13797 stub_sec
= group
->stub_sec
;
13798 memcpy (stub_sec
->contents
+ stub_sec
->size
- htab
->sfpr
->size
,
13799 htab
->sfpr
->contents
, htab
->sfpr
->size
);
13800 if (htab
->params
->emit_stub_syms
)
13804 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13805 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13810 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13811 if ((stub_sec
= group
->stub_sec
) != NULL
)
13813 stub_sec_count
+= 1;
13814 if (stub_sec
->rawsize
!= stub_sec
->size
13815 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13816 || stub_sec
->rawsize
< stub_sec
->size
))
13822 htab
->stub_error
= TRUE
;
13823 _bfd_error_handler (_("stubs don't match calculated size"));
13826 if (htab
->stub_error
)
13832 *stats
= bfd_malloc (500);
13833 if (*stats
== NULL
)
13836 len
= sprintf (*stats
,
13837 ngettext ("linker stubs in %u group\n",
13838 "linker stubs in %u groups\n",
13841 sprintf (*stats
+ len
, _(" branch %lu\n"
13842 " toc adjust %lu\n"
13843 " long branch %lu\n"
13844 " long toc adj %lu\n"
13846 " plt call toc %lu\n"
13847 " global entry %lu"),
13848 htab
->stub_count
[ppc_stub_long_branch
- 1],
13849 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13850 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13851 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13852 htab
->stub_count
[ppc_stub_plt_call
- 1],
13853 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13854 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13859 /* What to do when ld finds relocations against symbols defined in
13860 discarded sections. */
13862 static unsigned int
13863 ppc64_elf_action_discarded (asection
*sec
)
13865 if (strcmp (".opd", sec
->name
) == 0)
13868 if (strcmp (".toc", sec
->name
) == 0)
13871 if (strcmp (".toc1", sec
->name
) == 0)
13874 return _bfd_elf_default_action_discarded (sec
);
13877 /* The RELOCATE_SECTION function is called by the ELF backend linker
13878 to handle the relocations for a section.
13880 The relocs are always passed as Rela structures; if the section
13881 actually uses Rel structures, the r_addend field will always be
13884 This function is responsible for adjust the section contents as
13885 necessary, and (if using Rela relocs and generating a
13886 relocatable output file) adjusting the reloc addend as
13889 This function does not have to worry about setting the reloc
13890 address or the reloc symbol index.
13892 LOCAL_SYMS is a pointer to the swapped in local symbols.
13894 LOCAL_SECTIONS is an array giving the section in the input file
13895 corresponding to the st_shndx field of each local symbol.
13897 The global hash table entry for the global symbols can be found
13898 via elf_sym_hashes (input_bfd).
13900 When generating relocatable output, this function must handle
13901 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13902 going to be the section symbol corresponding to the output
13903 section, which means that the addend must be adjusted
13907 ppc64_elf_relocate_section (bfd
*output_bfd
,
13908 struct bfd_link_info
*info
,
13910 asection
*input_section
,
13911 bfd_byte
*contents
,
13912 Elf_Internal_Rela
*relocs
,
13913 Elf_Internal_Sym
*local_syms
,
13914 asection
**local_sections
)
13916 struct ppc_link_hash_table
*htab
;
13917 Elf_Internal_Shdr
*symtab_hdr
;
13918 struct elf_link_hash_entry
**sym_hashes
;
13919 Elf_Internal_Rela
*rel
;
13920 Elf_Internal_Rela
*wrel
;
13921 Elf_Internal_Rela
*relend
;
13922 Elf_Internal_Rela outrel
;
13924 struct got_entry
**local_got_ents
;
13926 bfd_boolean ret
= TRUE
;
13927 bfd_boolean is_opd
;
13928 /* Assume 'at' branch hints. */
13929 bfd_boolean is_isa_v2
= TRUE
;
13930 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13932 /* Initialize howto table if needed. */
13933 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13936 htab
= ppc_hash_table (info
);
13940 /* Don't relocate stub sections. */
13941 if (input_section
->owner
== htab
->params
->stub_bfd
)
13944 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13946 local_got_ents
= elf_local_got_ents (input_bfd
);
13947 TOCstart
= elf_gp (output_bfd
);
13948 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13949 sym_hashes
= elf_sym_hashes (input_bfd
);
13950 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13952 rel
= wrel
= relocs
;
13953 relend
= relocs
+ input_section
->reloc_count
;
13954 for (; rel
< relend
; wrel
++, rel
++)
13956 enum elf_ppc64_reloc_type r_type
;
13958 bfd_reloc_status_type r
;
13959 Elf_Internal_Sym
*sym
;
13961 struct elf_link_hash_entry
*h_elf
;
13962 struct ppc_link_hash_entry
*h
;
13963 struct ppc_link_hash_entry
*fdh
;
13964 const char *sym_name
;
13965 unsigned long r_symndx
, toc_symndx
;
13966 bfd_vma toc_addend
;
13967 unsigned char tls_mask
, tls_gd
, tls_type
;
13968 unsigned char sym_type
;
13969 bfd_vma relocation
;
13970 bfd_boolean unresolved_reloc
, save_unresolved_reloc
;
13971 bfd_boolean warned
;
13972 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13975 struct ppc_stub_hash_entry
*stub_entry
;
13976 bfd_vma max_br_offset
;
13978 Elf_Internal_Rela orig_rel
;
13979 reloc_howto_type
*howto
;
13980 struct reloc_howto_struct alt_howto
;
13985 r_type
= ELF64_R_TYPE (rel
->r_info
);
13986 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13988 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13989 symbol of the previous ADDR64 reloc. The symbol gives us the
13990 proper TOC base to use. */
13991 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13993 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13995 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
14001 unresolved_reloc
= FALSE
;
14004 if (r_symndx
< symtab_hdr
->sh_info
)
14006 /* It's a local symbol. */
14007 struct _opd_sec_data
*opd
;
14009 sym
= local_syms
+ r_symndx
;
14010 sec
= local_sections
[r_symndx
];
14011 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
14012 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
14013 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
14014 opd
= get_opd_info (sec
);
14015 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
14017 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
14023 /* If this is a relocation against the opd section sym
14024 and we have edited .opd, adjust the reloc addend so
14025 that ld -r and ld --emit-relocs output is correct.
14026 If it is a reloc against some other .opd symbol,
14027 then the symbol value will be adjusted later. */
14028 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
14029 rel
->r_addend
+= adjust
;
14031 relocation
+= adjust
;
14037 bfd_boolean ignored
;
14039 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
14040 r_symndx
, symtab_hdr
, sym_hashes
,
14041 h_elf
, sec
, relocation
,
14042 unresolved_reloc
, warned
, ignored
);
14043 sym_name
= h_elf
->root
.root
.string
;
14044 sym_type
= h_elf
->type
;
14046 && sec
->owner
== output_bfd
14047 && strcmp (sec
->name
, ".opd") == 0)
14049 /* This is a symbol defined in a linker script. All
14050 such are defined in output sections, even those
14051 defined by simple assignment from a symbol defined in
14052 an input section. Transfer the symbol to an
14053 appropriate input .opd section, so that a branch to
14054 this symbol will be mapped to the location specified
14055 by the opd entry. */
14056 struct bfd_link_order
*lo
;
14057 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
14058 if (lo
->type
== bfd_indirect_link_order
)
14060 asection
*isec
= lo
->u
.indirect
.section
;
14061 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
14062 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
14065 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
14066 h_elf
->root
.u
.def
.section
= isec
;
14073 h
= (struct ppc_link_hash_entry
*) h_elf
;
14075 if (sec
!= NULL
&& discarded_section (sec
))
14077 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
14078 input_bfd
, input_section
,
14079 contents
+ rel
->r_offset
);
14080 wrel
->r_offset
= rel
->r_offset
;
14082 wrel
->r_addend
= 0;
14084 /* For ld -r, remove relocations in debug sections against
14085 symbols defined in discarded sections. Not done for
14086 non-debug to preserve relocs in .eh_frame which the
14087 eh_frame editing code expects to be present. */
14088 if (bfd_link_relocatable (info
)
14089 && (input_section
->flags
& SEC_DEBUGGING
))
14095 if (bfd_link_relocatable (info
))
14098 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
14100 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14101 sec
= bfd_abs_section_ptr
;
14102 unresolved_reloc
= FALSE
;
14105 /* TLS optimizations. Replace instruction sequences and relocs
14106 based on information we collected in tls_optimize. We edit
14107 RELOCS so that --emit-relocs will output something sensible
14108 for the final instruction stream. */
14113 tls_mask
= h
->tls_mask
;
14114 else if (local_got_ents
!= NULL
)
14116 struct plt_entry
**local_plt
= (struct plt_entry
**)
14117 (local_got_ents
+ symtab_hdr
->sh_info
);
14118 unsigned char *lgot_masks
= (unsigned char *)
14119 (local_plt
+ symtab_hdr
->sh_info
);
14120 tls_mask
= lgot_masks
[r_symndx
];
14122 if (((tls_mask
& TLS_TLS
) == 0 || tls_mask
== (TLS_TLS
| TLS_MARK
))
14123 && (r_type
== R_PPC64_TLS
14124 || r_type
== R_PPC64_TLSGD
14125 || r_type
== R_PPC64_TLSLD
))
14127 /* Check for toc tls entries. */
14128 unsigned char *toc_tls
;
14130 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
14131 &local_syms
, rel
, input_bfd
))
14135 tls_mask
= *toc_tls
;
14138 /* Check that tls relocs are used with tls syms, and non-tls
14139 relocs are used with non-tls syms. */
14140 if (r_symndx
!= STN_UNDEF
14141 && r_type
!= R_PPC64_NONE
14143 || h
->elf
.root
.type
== bfd_link_hash_defined
14144 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
14145 && (IS_PPC64_TLS_RELOC (r_type
)
14146 != (sym_type
== STT_TLS
14147 || (sym_type
== STT_SECTION
14148 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
14150 if ((tls_mask
& TLS_TLS
) != 0
14151 && (r_type
== R_PPC64_TLS
14152 || r_type
== R_PPC64_TLSGD
14153 || r_type
== R_PPC64_TLSLD
))
14154 /* R_PPC64_TLS is OK against a symbol in the TOC. */
14157 info
->callbacks
->einfo
14158 (!IS_PPC64_TLS_RELOC (r_type
)
14159 /* xgettext:c-format */
14160 ? _("%H: %s used with TLS symbol `%pT'\n")
14161 /* xgettext:c-format */
14162 : _("%H: %s used with non-TLS symbol `%pT'\n"),
14163 input_bfd
, input_section
, rel
->r_offset
,
14164 ppc64_elf_howto_table
[r_type
]->name
,
14168 /* Ensure reloc mapping code below stays sane. */
14169 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
14170 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
14171 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
14172 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
14173 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
14174 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
14175 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
14176 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
14177 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
14178 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
14186 case R_PPC64_LO_DS_OPT
:
14187 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
14188 if ((insn
& (0x3f << 26)) != 58u << 26)
14190 insn
+= (14u << 26) - (58u << 26);
14191 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
14192 r_type
= R_PPC64_TOC16_LO
;
14193 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14196 case R_PPC64_TOC16
:
14197 case R_PPC64_TOC16_LO
:
14198 case R_PPC64_TOC16_DS
:
14199 case R_PPC64_TOC16_LO_DS
:
14201 /* Check for toc tls entries. */
14202 unsigned char *toc_tls
;
14205 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
14206 &local_syms
, rel
, input_bfd
);
14212 tls_mask
= *toc_tls
;
14213 if (r_type
== R_PPC64_TOC16_DS
14214 || r_type
== R_PPC64_TOC16_LO_DS
)
14216 if ((tls_mask
& TLS_TLS
) != 0
14217 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
14222 /* If we found a GD reloc pair, then we might be
14223 doing a GD->IE transition. */
14226 tls_gd
= TLS_TPRELGD
;
14227 if ((tls_mask
& TLS_TLS
) != 0
14228 && (tls_mask
& TLS_GD
) == 0)
14231 else if (retval
== 3)
14233 if ((tls_mask
& TLS_TLS
) != 0
14234 && (tls_mask
& TLS_LD
) == 0)
14242 case R_PPC64_GOT_TPREL16_HI
:
14243 case R_PPC64_GOT_TPREL16_HA
:
14244 if ((tls_mask
& TLS_TLS
) != 0
14245 && (tls_mask
& TLS_TPREL
) == 0)
14247 rel
->r_offset
-= d_offset
;
14248 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14249 r_type
= R_PPC64_NONE
;
14250 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14254 case R_PPC64_GOT_TPREL16_DS
:
14255 case R_PPC64_GOT_TPREL16_LO_DS
:
14256 if ((tls_mask
& TLS_TLS
) != 0
14257 && (tls_mask
& TLS_TPREL
) == 0)
14260 insn
= bfd_get_32 (input_bfd
,
14261 contents
+ rel
->r_offset
- d_offset
);
14263 insn
|= 0x3c0d0000; /* addis 0,13,0 */
14264 bfd_put_32 (input_bfd
, insn
,
14265 contents
+ rel
->r_offset
- d_offset
);
14266 r_type
= R_PPC64_TPREL16_HA
;
14267 if (toc_symndx
!= 0)
14269 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
14270 rel
->r_addend
= toc_addend
;
14271 /* We changed the symbol. Start over in order to
14272 get h, sym, sec etc. right. */
14276 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14281 if ((tls_mask
& TLS_TLS
) != 0
14282 && (tls_mask
& TLS_TPREL
) == 0)
14284 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14285 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
14288 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14289 /* Was PPC64_TLS which sits on insn boundary, now
14290 PPC64_TPREL16_LO which is at low-order half-word. */
14291 rel
->r_offset
+= d_offset
;
14292 r_type
= R_PPC64_TPREL16_LO
;
14293 if (toc_symndx
!= 0)
14295 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
14296 rel
->r_addend
= toc_addend
;
14297 /* We changed the symbol. Start over in order to
14298 get h, sym, sec etc. right. */
14302 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14306 case R_PPC64_GOT_TLSGD16_HI
:
14307 case R_PPC64_GOT_TLSGD16_HA
:
14308 tls_gd
= TLS_TPRELGD
;
14309 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
14313 case R_PPC64_GOT_TLSLD16_HI
:
14314 case R_PPC64_GOT_TLSLD16_HA
:
14315 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
14318 if ((tls_mask
& tls_gd
) != 0)
14319 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
14320 + R_PPC64_GOT_TPREL16_DS
);
14323 rel
->r_offset
-= d_offset
;
14324 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14325 r_type
= R_PPC64_NONE
;
14327 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14331 case R_PPC64_GOT_TLSGD16
:
14332 case R_PPC64_GOT_TLSGD16_LO
:
14333 tls_gd
= TLS_TPRELGD
;
14334 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
14338 case R_PPC64_GOT_TLSLD16
:
14339 case R_PPC64_GOT_TLSLD16_LO
:
14340 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
14342 unsigned int insn1
, insn2
;
14346 offset
= (bfd_vma
) -1;
14347 /* If not using the newer R_PPC64_TLSGD/LD to mark
14348 __tls_get_addr calls, we must trust that the call
14349 stays with its arg setup insns, ie. that the next
14350 reloc is the __tls_get_addr call associated with
14351 the current reloc. Edit both insns. */
14352 if (input_section
->has_tls_get_addr_call
14353 && rel
+ 1 < relend
14354 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
14355 htab
->tls_get_addr
,
14356 htab
->tls_get_addr_fd
))
14357 offset
= rel
[1].r_offset
;
14358 /* We read the low GOT_TLS (or TOC16) insn because we
14359 need to keep the destination reg. It may be
14360 something other than the usual r3, and moved to r3
14361 before the call by intervening code. */
14362 insn1
= bfd_get_32 (input_bfd
,
14363 contents
+ rel
->r_offset
- d_offset
);
14364 if ((tls_mask
& tls_gd
) != 0)
14367 insn1
&= (0x1f << 21) | (0x1f << 16);
14368 insn1
|= 58 << 26; /* ld */
14369 insn2
= 0x7c636a14; /* add 3,3,13 */
14370 if (offset
!= (bfd_vma
) -1)
14371 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14372 if ((tls_mask
& TLS_EXPLICIT
) == 0)
14373 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
14374 + R_PPC64_GOT_TPREL16_DS
);
14376 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
14377 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14382 insn1
&= 0x1f << 21;
14383 insn1
|= 0x3c0d0000; /* addis r,13,0 */
14384 insn2
= 0x38630000; /* addi 3,3,0 */
14387 /* Was an LD reloc. */
14389 sec
= local_sections
[toc_symndx
];
14391 r_symndx
< symtab_hdr
->sh_info
;
14393 if (local_sections
[r_symndx
] == sec
)
14395 if (r_symndx
>= symtab_hdr
->sh_info
)
14396 r_symndx
= STN_UNDEF
;
14397 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14398 if (r_symndx
!= STN_UNDEF
)
14399 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
14400 + sec
->output_offset
14401 + sec
->output_section
->vma
);
14403 else if (toc_symndx
!= 0)
14405 r_symndx
= toc_symndx
;
14406 rel
->r_addend
= toc_addend
;
14408 r_type
= R_PPC64_TPREL16_HA
;
14409 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14410 if (offset
!= (bfd_vma
) -1)
14412 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
14413 R_PPC64_TPREL16_LO
);
14414 rel
[1].r_offset
= offset
+ d_offset
;
14415 rel
[1].r_addend
= rel
->r_addend
;
14418 bfd_put_32 (input_bfd
, insn1
,
14419 contents
+ rel
->r_offset
- d_offset
);
14420 if (offset
!= (bfd_vma
) -1)
14421 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14422 if ((tls_mask
& tls_gd
) == 0
14423 && (tls_gd
== 0 || toc_symndx
!= 0))
14425 /* We changed the symbol. Start over in order
14426 to get h, sym, sec etc. right. */
14432 case R_PPC64_TLSGD
:
14433 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
14434 && rel
+ 1 < relend
)
14436 unsigned int insn2
;
14437 bfd_vma offset
= rel
->r_offset
;
14439 if (is_plt_seq_reloc (ELF64_R_TYPE (rel
[1].r_info
)))
14441 bfd_put_32 (output_bfd
, NOP
, contents
+ offset
);
14442 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14446 if (ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_PLTCALL
)
14447 bfd_put_32 (output_bfd
, NOP
, contents
+ offset
+ 4);
14449 if ((tls_mask
& TLS_TPRELGD
) != 0)
14452 r_type
= R_PPC64_NONE
;
14453 insn2
= 0x7c636a14; /* add 3,3,13 */
14458 if (toc_symndx
!= 0)
14460 r_symndx
= toc_symndx
;
14461 rel
->r_addend
= toc_addend
;
14463 r_type
= R_PPC64_TPREL16_LO
;
14464 rel
->r_offset
= offset
+ d_offset
;
14465 insn2
= 0x38630000; /* addi 3,3,0 */
14467 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14468 /* Zap the reloc on the _tls_get_addr call too. */
14469 BFD_ASSERT (offset
== rel
[1].r_offset
);
14470 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14471 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14472 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
14477 case R_PPC64_TLSLD
:
14478 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
14479 && rel
+ 1 < relend
)
14481 unsigned int insn2
;
14482 bfd_vma offset
= rel
->r_offset
;
14484 if (is_plt_seq_reloc (ELF64_R_TYPE (rel
[1].r_info
)))
14486 bfd_put_32 (output_bfd
, NOP
, contents
+ offset
);
14487 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14491 if (ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_PLTCALL
)
14492 bfd_put_32 (output_bfd
, NOP
, contents
+ offset
+ 4);
14495 sec
= local_sections
[toc_symndx
];
14497 r_symndx
< symtab_hdr
->sh_info
;
14499 if (local_sections
[r_symndx
] == sec
)
14501 if (r_symndx
>= symtab_hdr
->sh_info
)
14502 r_symndx
= STN_UNDEF
;
14503 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14504 if (r_symndx
!= STN_UNDEF
)
14505 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
14506 + sec
->output_offset
14507 + sec
->output_section
->vma
);
14509 r_type
= R_PPC64_TPREL16_LO
;
14510 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14511 rel
->r_offset
= offset
+ d_offset
;
14512 /* Zap the reloc on the _tls_get_addr call too. */
14513 BFD_ASSERT (offset
== rel
[1].r_offset
);
14514 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14515 insn2
= 0x38630000; /* addi 3,3,0 */
14516 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14521 case R_PPC64_DTPMOD64
:
14522 if (rel
+ 1 < relend
14523 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
14524 && rel
[1].r_offset
== rel
->r_offset
+ 8)
14526 if ((tls_mask
& TLS_GD
) == 0)
14528 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
14529 if ((tls_mask
& TLS_TPRELGD
) != 0)
14530 r_type
= R_PPC64_TPREL64
;
14533 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14534 r_type
= R_PPC64_NONE
;
14536 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14541 if ((tls_mask
& TLS_LD
) == 0)
14543 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14544 r_type
= R_PPC64_NONE
;
14545 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14550 case R_PPC64_TPREL64
:
14551 if ((tls_mask
& TLS_TPREL
) == 0)
14553 r_type
= R_PPC64_NONE
;
14554 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14558 case R_PPC64_ENTRY
:
14559 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14560 if (!bfd_link_pic (info
)
14561 && !info
->traditional_format
14562 && relocation
+ 0x80008000 <= 0xffffffff)
14564 unsigned int insn1
, insn2
;
14566 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14567 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14568 if ((insn1
& ~0xfffc) == LD_R2_0R12
14569 && insn2
== ADD_R2_R2_R12
)
14571 bfd_put_32 (input_bfd
,
14572 LIS_R2
+ PPC_HA (relocation
),
14573 contents
+ rel
->r_offset
);
14574 bfd_put_32 (input_bfd
,
14575 ADDI_R2_R2
+ PPC_LO (relocation
),
14576 contents
+ rel
->r_offset
+ 4);
14581 relocation
-= (rel
->r_offset
14582 + input_section
->output_offset
14583 + input_section
->output_section
->vma
);
14584 if (relocation
+ 0x80008000 <= 0xffffffff)
14586 unsigned int insn1
, insn2
;
14588 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14589 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14590 if ((insn1
& ~0xfffc) == LD_R2_0R12
14591 && insn2
== ADD_R2_R2_R12
)
14593 bfd_put_32 (input_bfd
,
14594 ADDIS_R2_R12
+ PPC_HA (relocation
),
14595 contents
+ rel
->r_offset
);
14596 bfd_put_32 (input_bfd
,
14597 ADDI_R2_R2
+ PPC_LO (relocation
),
14598 contents
+ rel
->r_offset
+ 4);
14604 case R_PPC64_REL16_HA
:
14605 /* If we are generating a non-PIC executable, edit
14606 . 0: addis 2,12,.TOC.-0b@ha
14607 . addi 2,2,.TOC.-0b@l
14608 used by ELFv2 global entry points to set up r2, to
14611 if .TOC. is in range. */
14612 if (!bfd_link_pic (info
)
14613 && !info
->traditional_format
14615 && rel
->r_addend
== d_offset
14616 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14617 && rel
+ 1 < relend
14618 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14619 && rel
[1].r_offset
== rel
->r_offset
+ 4
14620 && rel
[1].r_addend
== rel
->r_addend
+ 4
14621 && relocation
+ 0x80008000 <= 0xffffffff)
14623 unsigned int insn1
, insn2
;
14624 bfd_vma offset
= rel
->r_offset
- d_offset
;
14625 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14626 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14627 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14628 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14630 r_type
= R_PPC64_ADDR16_HA
;
14631 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14632 rel
->r_addend
-= d_offset
;
14633 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14634 rel
[1].r_addend
-= d_offset
+ 4;
14635 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14641 /* Handle other relocations that tweak non-addend part of insn. */
14643 max_br_offset
= 1 << 25;
14644 addend
= rel
->r_addend
;
14645 reloc_dest
= DEST_NORMAL
;
14651 case R_PPC64_TOCSAVE
:
14652 if (relocation
+ addend
== (rel
->r_offset
14653 + input_section
->output_offset
14654 + input_section
->output_section
->vma
)
14655 && tocsave_find (htab
, NO_INSERT
,
14656 &local_syms
, rel
, input_bfd
))
14658 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14660 || insn
== CROR_151515
|| insn
== CROR_313131
)
14661 bfd_put_32 (input_bfd
,
14662 STD_R2_0R1
+ STK_TOC (htab
),
14663 contents
+ rel
->r_offset
);
14667 /* Branch taken prediction relocations. */
14668 case R_PPC64_ADDR14_BRTAKEN
:
14669 case R_PPC64_REL14_BRTAKEN
:
14670 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14671 /* Fall through. */
14673 /* Branch not taken prediction relocations. */
14674 case R_PPC64_ADDR14_BRNTAKEN
:
14675 case R_PPC64_REL14_BRNTAKEN
:
14676 insn
|= bfd_get_32 (input_bfd
,
14677 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14678 /* Fall through. */
14680 case R_PPC64_REL14
:
14681 max_br_offset
= 1 << 15;
14682 /* Fall through. */
14684 case R_PPC64_REL24
:
14685 case R_PPC64_PLTCALL
:
14686 /* Calls to functions with a different TOC, such as calls to
14687 shared objects, need to alter the TOC pointer. This is
14688 done using a linkage stub. A REL24 branching to these
14689 linkage stubs needs to be followed by a nop, as the nop
14690 will be replaced with an instruction to restore the TOC
14695 && h
->oh
->is_func_descriptor
)
14696 fdh
= ppc_follow_link (h
->oh
);
14697 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14699 if (r_type
== R_PPC64_PLTCALL
14700 && stub_entry
!= NULL
14701 && (stub_entry
->stub_type
== ppc_stub_plt_call
14702 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14705 if (stub_entry
!= NULL
14706 && (stub_entry
->stub_type
== ppc_stub_plt_call
14707 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14708 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14709 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14711 bfd_boolean can_plt_call
= FALSE
;
14713 if (stub_entry
->stub_type
== ppc_stub_plt_call
14715 && htab
->params
->plt_localentry0
!= 0
14716 && is_elfv2_localentry0 (&h
->elf
))
14718 /* The function doesn't use or change r2. */
14719 can_plt_call
= TRUE
;
14722 /* All of these stubs may modify r2, so there must be a
14723 branch and link followed by a nop. The nop is
14724 replaced by an insn to restore r2. */
14725 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14729 br
= bfd_get_32 (input_bfd
,
14730 contents
+ rel
->r_offset
);
14735 nop
= bfd_get_32 (input_bfd
,
14736 contents
+ rel
->r_offset
+ 4);
14737 if (nop
== LD_R2_0R1
+ STK_TOC (htab
))
14738 can_plt_call
= TRUE
;
14739 else if (nop
== NOP
14740 || nop
== CROR_151515
14741 || nop
== CROR_313131
)
14744 && (h
== htab
->tls_get_addr_fd
14745 || h
== htab
->tls_get_addr
)
14746 && htab
->params
->tls_get_addr_opt
)
14748 /* Special stub used, leave nop alone. */
14751 bfd_put_32 (input_bfd
,
14752 LD_R2_0R1
+ STK_TOC (htab
),
14753 contents
+ rel
->r_offset
+ 4);
14754 can_plt_call
= TRUE
;
14759 if (!can_plt_call
&& h
!= NULL
)
14761 const char *name
= h
->elf
.root
.root
.string
;
14766 if (strncmp (name
, "__libc_start_main", 17) == 0
14767 && (name
[17] == 0 || name
[17] == '@'))
14769 /* Allow crt1 branch to go via a toc adjusting
14770 stub. Other calls that never return could do
14771 the same, if we could detect such. */
14772 can_plt_call
= TRUE
;
14778 /* g++ as of 20130507 emits self-calls without a
14779 following nop. This is arguably wrong since we
14780 have conflicting information. On the one hand a
14781 global symbol and on the other a local call
14782 sequence, but don't error for this special case.
14783 It isn't possible to cheaply verify we have
14784 exactly such a call. Allow all calls to the same
14786 asection
*code_sec
= sec
;
14788 if (get_opd_info (sec
) != NULL
)
14790 bfd_vma off
= (relocation
+ addend
14791 - sec
->output_section
->vma
14792 - sec
->output_offset
);
14794 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14796 if (code_sec
== input_section
)
14797 can_plt_call
= TRUE
;
14802 if (stub_entry
->stub_type
== ppc_stub_plt_call
14803 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14804 info
->callbacks
->einfo
14805 /* xgettext:c-format */
14806 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14807 "recompile with -fPIC\n"),
14808 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14810 info
->callbacks
->einfo
14811 /* xgettext:c-format */
14812 (_("%H: call to `%pT' lacks nop, can't restore toc; "
14813 "(-mcmodel=small toc adjust stub)\n"),
14814 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14816 bfd_set_error (bfd_error_bad_value
);
14821 && (stub_entry
->stub_type
== ppc_stub_plt_call
14822 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14823 unresolved_reloc
= FALSE
;
14826 if ((stub_entry
== NULL
14827 || stub_entry
->stub_type
== ppc_stub_long_branch
14828 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14829 && get_opd_info (sec
) != NULL
)
14831 /* The branch destination is the value of the opd entry. */
14832 bfd_vma off
= (relocation
+ addend
14833 - sec
->output_section
->vma
14834 - sec
->output_offset
);
14835 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14836 if (dest
!= (bfd_vma
) -1)
14840 reloc_dest
= DEST_OPD
;
14844 /* If the branch is out of reach we ought to have a long
14846 from
= (rel
->r_offset
14847 + input_section
->output_offset
14848 + input_section
->output_section
->vma
);
14850 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14854 if (stub_entry
!= NULL
14855 && (stub_entry
->stub_type
== ppc_stub_long_branch
14856 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14857 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14858 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14859 || (relocation
+ addend
- from
+ max_br_offset
14860 < 2 * max_br_offset
)))
14861 /* Don't use the stub if this branch is in range. */
14864 if (stub_entry
!= NULL
)
14866 /* Munge up the value and addend so that we call the stub
14867 rather than the procedure directly. */
14868 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14870 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14871 relocation
+= (stub_sec
->output_offset
14872 + stub_sec
->output_section
->vma
14873 + stub_sec
->size
- htab
->sfpr
->size
14874 - htab
->sfpr
->output_offset
14875 - htab
->sfpr
->output_section
->vma
);
14877 relocation
= (stub_entry
->stub_offset
14878 + stub_sec
->output_offset
14879 + stub_sec
->output_section
->vma
);
14881 reloc_dest
= DEST_STUB
;
14883 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14884 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14885 && (ALWAYS_EMIT_R2SAVE
14886 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14887 && rel
+ 1 < relend
14888 && rel
[1].r_offset
== rel
->r_offset
+ 4
14889 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14897 /* Set 'a' bit. This is 0b00010 in BO field for branch
14898 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14899 for branch on CTR insns (BO == 1a00t or 1a01t). */
14900 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14901 insn
|= 0x02 << 21;
14902 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14903 insn
|= 0x08 << 21;
14909 /* Invert 'y' bit if not the default. */
14910 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14911 insn
^= 0x01 << 21;
14914 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14917 /* NOP out calls to undefined weak functions.
14918 We can thus call a weak function without first
14919 checking whether the function is defined. */
14921 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14922 && h
->elf
.dynindx
== -1
14923 && r_type
== R_PPC64_REL24
14927 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14933 /* Set `addend'. */
14935 save_unresolved_reloc
= unresolved_reloc
;
14939 /* xgettext:c-format */
14940 _bfd_error_handler (_("%pB: %s unsupported"),
14941 input_bfd
, ppc64_elf_howto_table
[r_type
]->name
);
14943 bfd_set_error (bfd_error_bad_value
);
14949 case R_PPC64_TLSGD
:
14950 case R_PPC64_TLSLD
:
14951 case R_PPC64_TOCSAVE
:
14952 case R_PPC64_GNU_VTINHERIT
:
14953 case R_PPC64_GNU_VTENTRY
:
14954 case R_PPC64_ENTRY
:
14957 /* GOT16 relocations. Like an ADDR16 using the symbol's
14958 address in the GOT as relocation value instead of the
14959 symbol's value itself. Also, create a GOT entry for the
14960 symbol and put the symbol value there. */
14961 case R_PPC64_GOT_TLSGD16
:
14962 case R_PPC64_GOT_TLSGD16_LO
:
14963 case R_PPC64_GOT_TLSGD16_HI
:
14964 case R_PPC64_GOT_TLSGD16_HA
:
14965 tls_type
= TLS_TLS
| TLS_GD
;
14968 case R_PPC64_GOT_TLSLD16
:
14969 case R_PPC64_GOT_TLSLD16_LO
:
14970 case R_PPC64_GOT_TLSLD16_HI
:
14971 case R_PPC64_GOT_TLSLD16_HA
:
14972 tls_type
= TLS_TLS
| TLS_LD
;
14975 case R_PPC64_GOT_TPREL16_DS
:
14976 case R_PPC64_GOT_TPREL16_LO_DS
:
14977 case R_PPC64_GOT_TPREL16_HI
:
14978 case R_PPC64_GOT_TPREL16_HA
:
14979 tls_type
= TLS_TLS
| TLS_TPREL
;
14982 case R_PPC64_GOT_DTPREL16_DS
:
14983 case R_PPC64_GOT_DTPREL16_LO_DS
:
14984 case R_PPC64_GOT_DTPREL16_HI
:
14985 case R_PPC64_GOT_DTPREL16_HA
:
14986 tls_type
= TLS_TLS
| TLS_DTPREL
;
14989 case R_PPC64_GOT16
:
14990 case R_PPC64_GOT16_LO
:
14991 case R_PPC64_GOT16_HI
:
14992 case R_PPC64_GOT16_HA
:
14993 case R_PPC64_GOT16_DS
:
14994 case R_PPC64_GOT16_LO_DS
:
14997 /* Relocation is to the entry for this symbol in the global
15002 unsigned long indx
= 0;
15003 struct got_entry
*ent
;
15005 if (tls_type
== (TLS_TLS
| TLS_LD
)
15007 || !h
->elf
.def_dynamic
))
15008 ent
= ppc64_tlsld_got (input_bfd
);
15013 if (!htab
->elf
.dynamic_sections_created
15014 || h
->elf
.dynindx
== -1
15015 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
15016 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
15017 /* This is actually a static link, or it is a
15018 -Bsymbolic link and the symbol is defined
15019 locally, or the symbol was forced to be local
15020 because of a version file. */
15024 indx
= h
->elf
.dynindx
;
15025 unresolved_reloc
= FALSE
;
15027 ent
= h
->elf
.got
.glist
;
15031 if (local_got_ents
== NULL
)
15033 ent
= local_got_ents
[r_symndx
];
15036 for (; ent
!= NULL
; ent
= ent
->next
)
15037 if (ent
->addend
== orig_rel
.r_addend
15038 && ent
->owner
== input_bfd
15039 && ent
->tls_type
== tls_type
)
15045 if (ent
->is_indirect
)
15046 ent
= ent
->got
.ent
;
15047 offp
= &ent
->got
.offset
;
15048 got
= ppc64_elf_tdata (ent
->owner
)->got
;
15052 /* The offset must always be a multiple of 8. We use the
15053 least significant bit to record whether we have already
15054 processed this entry. */
15056 if ((off
& 1) != 0)
15060 /* Generate relocs for the dynamic linker, except in
15061 the case of TLSLD where we'll use one entry per
15069 ? h
->elf
.type
== STT_GNU_IFUNC
15070 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
15073 relgot
= htab
->elf
.irelplt
;
15075 htab
->local_ifunc_resolver
= 1;
15076 else if (is_static_defined (&h
->elf
))
15077 htab
->maybe_local_ifunc_resolver
= 1;
15080 || (bfd_link_pic (info
)
15082 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
15083 || (tls_type
== (TLS_TLS
| TLS_LD
)
15084 && !h
->elf
.def_dynamic
))
15085 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
15086 && bfd_link_executable (info
)
15087 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
15088 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
15089 if (relgot
!= NULL
)
15091 outrel
.r_offset
= (got
->output_section
->vma
15092 + got
->output_offset
15094 outrel
.r_addend
= addend
;
15095 if (tls_type
& (TLS_LD
| TLS_GD
))
15097 outrel
.r_addend
= 0;
15098 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
15099 if (tls_type
== (TLS_TLS
| TLS_GD
))
15101 loc
= relgot
->contents
;
15102 loc
+= (relgot
->reloc_count
++
15103 * sizeof (Elf64_External_Rela
));
15104 bfd_elf64_swap_reloca_out (output_bfd
,
15106 outrel
.r_offset
+= 8;
15107 outrel
.r_addend
= addend
;
15109 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
15112 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
15113 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
15114 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
15115 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
15116 else if (indx
!= 0)
15117 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
15121 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15123 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
15125 /* Write the .got section contents for the sake
15127 loc
= got
->contents
+ off
;
15128 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
15132 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
15134 outrel
.r_addend
+= relocation
;
15135 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
15137 if (htab
->elf
.tls_sec
== NULL
)
15138 outrel
.r_addend
= 0;
15140 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
15143 loc
= relgot
->contents
;
15144 loc
+= (relgot
->reloc_count
++
15145 * sizeof (Elf64_External_Rela
));
15146 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15149 /* Init the .got section contents here if we're not
15150 emitting a reloc. */
15153 relocation
+= addend
;
15156 if (htab
->elf
.tls_sec
== NULL
)
15160 if (tls_type
& TLS_LD
)
15163 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
15164 if (tls_type
& TLS_TPREL
)
15165 relocation
+= DTP_OFFSET
- TP_OFFSET
;
15168 if (tls_type
& (TLS_GD
| TLS_LD
))
15170 bfd_put_64 (output_bfd
, relocation
,
15171 got
->contents
+ off
+ 8);
15175 bfd_put_64 (output_bfd
, relocation
,
15176 got
->contents
+ off
);
15180 if (off
>= (bfd_vma
) -2)
15183 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
15184 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
15188 case R_PPC64_PLT16_HA
:
15189 case R_PPC64_PLT16_HI
:
15190 case R_PPC64_PLT16_LO
:
15191 case R_PPC64_PLT16_LO_DS
:
15192 case R_PPC64_PLT32
:
15193 case R_PPC64_PLT64
:
15194 case R_PPC64_PLTSEQ
:
15195 case R_PPC64_PLTCALL
:
15196 /* Relocation is to the entry for this symbol in the
15197 procedure linkage table. */
15198 unresolved_reloc
= TRUE
;
15200 struct plt_entry
**plt_list
= NULL
;
15202 plt_list
= &h
->elf
.plt
.plist
;
15203 else if (local_got_ents
!= NULL
)
15205 struct plt_entry
**local_plt
= (struct plt_entry
**)
15206 (local_got_ents
+ symtab_hdr
->sh_info
);
15207 plt_list
= local_plt
+ r_symndx
;
15211 struct plt_entry
*ent
;
15213 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
15214 if (ent
->plt
.offset
!= (bfd_vma
) -1
15215 && ent
->addend
== orig_rel
.r_addend
)
15220 plt
= htab
->elf
.splt
;
15221 if (!htab
->elf
.dynamic_sections_created
15223 || h
->elf
.dynindx
== -1)
15226 ? h
->elf
.type
== STT_GNU_IFUNC
15227 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15228 plt
= htab
->elf
.iplt
;
15230 plt
= htab
->pltlocal
;
15232 relocation
= (plt
->output_section
->vma
15233 + plt
->output_offset
15234 + ent
->plt
.offset
);
15235 if (r_type
== R_PPC64_PLT16_HA
15236 || r_type
==R_PPC64_PLT16_HI
15237 || r_type
==R_PPC64_PLT16_LO
15238 || r_type
==R_PPC64_PLT16_LO_DS
)
15240 got
= (elf_gp (output_bfd
)
15241 + htab
->sec_info
[input_section
->id
].toc_off
);
15245 unresolved_reloc
= FALSE
;
15253 /* Relocation value is TOC base. */
15254 relocation
= TOCstart
;
15255 if (r_symndx
== STN_UNDEF
)
15256 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
15257 else if (unresolved_reloc
)
15259 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
15260 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
15262 unresolved_reloc
= TRUE
;
15265 /* TOC16 relocs. We want the offset relative to the TOC base,
15266 which is the address of the start of the TOC plus 0x8000.
15267 The TOC consists of sections .got, .toc, .tocbss, and .plt,
15269 case R_PPC64_TOC16
:
15270 case R_PPC64_TOC16_LO
:
15271 case R_PPC64_TOC16_HI
:
15272 case R_PPC64_TOC16_DS
:
15273 case R_PPC64_TOC16_LO_DS
:
15274 case R_PPC64_TOC16_HA
:
15275 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
15278 /* Relocate against the beginning of the section. */
15279 case R_PPC64_SECTOFF
:
15280 case R_PPC64_SECTOFF_LO
:
15281 case R_PPC64_SECTOFF_HI
:
15282 case R_PPC64_SECTOFF_DS
:
15283 case R_PPC64_SECTOFF_LO_DS
:
15284 case R_PPC64_SECTOFF_HA
:
15286 addend
-= sec
->output_section
->vma
;
15289 case R_PPC64_REL16
:
15290 case R_PPC64_REL16_LO
:
15291 case R_PPC64_REL16_HI
:
15292 case R_PPC64_REL16_HA
:
15293 case R_PPC64_REL16DX_HA
:
15296 case R_PPC64_REL14
:
15297 case R_PPC64_REL14_BRNTAKEN
:
15298 case R_PPC64_REL14_BRTAKEN
:
15299 case R_PPC64_REL24
:
15302 case R_PPC64_TPREL16
:
15303 case R_PPC64_TPREL16_LO
:
15304 case R_PPC64_TPREL16_HI
:
15305 case R_PPC64_TPREL16_HA
:
15306 case R_PPC64_TPREL16_DS
:
15307 case R_PPC64_TPREL16_LO_DS
:
15308 case R_PPC64_TPREL16_HIGH
:
15309 case R_PPC64_TPREL16_HIGHA
:
15310 case R_PPC64_TPREL16_HIGHER
:
15311 case R_PPC64_TPREL16_HIGHERA
:
15312 case R_PPC64_TPREL16_HIGHEST
:
15313 case R_PPC64_TPREL16_HIGHESTA
:
15315 && h
->elf
.root
.type
== bfd_link_hash_undefweak
15316 && h
->elf
.dynindx
== -1)
15318 /* Make this relocation against an undefined weak symbol
15319 resolve to zero. This is really just a tweak, since
15320 code using weak externs ought to check that they are
15321 defined before using them. */
15322 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
15324 insn
= bfd_get_32 (input_bfd
, p
);
15325 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
15327 bfd_put_32 (input_bfd
, insn
, p
);
15330 if (htab
->elf
.tls_sec
!= NULL
)
15331 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
15332 /* The TPREL16 relocs shouldn't really be used in shared
15333 libs or with non-local symbols as that will result in
15334 DT_TEXTREL being set, but support them anyway. */
15337 case R_PPC64_DTPREL16
:
15338 case R_PPC64_DTPREL16_LO
:
15339 case R_PPC64_DTPREL16_HI
:
15340 case R_PPC64_DTPREL16_HA
:
15341 case R_PPC64_DTPREL16_DS
:
15342 case R_PPC64_DTPREL16_LO_DS
:
15343 case R_PPC64_DTPREL16_HIGH
:
15344 case R_PPC64_DTPREL16_HIGHA
:
15345 case R_PPC64_DTPREL16_HIGHER
:
15346 case R_PPC64_DTPREL16_HIGHERA
:
15347 case R_PPC64_DTPREL16_HIGHEST
:
15348 case R_PPC64_DTPREL16_HIGHESTA
:
15349 if (htab
->elf
.tls_sec
!= NULL
)
15350 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
15353 case R_PPC64_ADDR64_LOCAL
:
15354 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
15359 case R_PPC64_DTPMOD64
:
15364 case R_PPC64_TPREL64
:
15365 if (htab
->elf
.tls_sec
!= NULL
)
15366 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
15369 case R_PPC64_DTPREL64
:
15370 if (htab
->elf
.tls_sec
!= NULL
)
15371 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
15372 /* Fall through. */
15374 /* Relocations that may need to be propagated if this is a
15376 case R_PPC64_REL30
:
15377 case R_PPC64_REL32
:
15378 case R_PPC64_REL64
:
15379 case R_PPC64_ADDR14
:
15380 case R_PPC64_ADDR14_BRNTAKEN
:
15381 case R_PPC64_ADDR14_BRTAKEN
:
15382 case R_PPC64_ADDR16
:
15383 case R_PPC64_ADDR16_DS
:
15384 case R_PPC64_ADDR16_HA
:
15385 case R_PPC64_ADDR16_HI
:
15386 case R_PPC64_ADDR16_HIGH
:
15387 case R_PPC64_ADDR16_HIGHA
:
15388 case R_PPC64_ADDR16_HIGHER
:
15389 case R_PPC64_ADDR16_HIGHERA
:
15390 case R_PPC64_ADDR16_HIGHEST
:
15391 case R_PPC64_ADDR16_HIGHESTA
:
15392 case R_PPC64_ADDR16_LO
:
15393 case R_PPC64_ADDR16_LO_DS
:
15394 case R_PPC64_ADDR24
:
15395 case R_PPC64_ADDR32
:
15396 case R_PPC64_ADDR64
:
15397 case R_PPC64_UADDR16
:
15398 case R_PPC64_UADDR32
:
15399 case R_PPC64_UADDR64
:
15401 if ((input_section
->flags
& SEC_ALLOC
) == 0)
15404 if (NO_OPD_RELOCS
&& is_opd
)
15407 if (bfd_link_pic (info
)
15409 || h
->dyn_relocs
!= NULL
)
15410 && ((h
!= NULL
&& pc_dynrelocs (h
))
15411 || must_be_dyn_reloc (info
, r_type
)))
15413 ? h
->dyn_relocs
!= NULL
15414 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
15416 bfd_boolean skip
, relocate
;
15421 /* When generating a dynamic object, these relocations
15422 are copied into the output file to be resolved at run
15428 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
15429 input_section
, rel
->r_offset
);
15430 if (out_off
== (bfd_vma
) -1)
15432 else if (out_off
== (bfd_vma
) -2)
15433 skip
= TRUE
, relocate
= TRUE
;
15434 out_off
+= (input_section
->output_section
->vma
15435 + input_section
->output_offset
);
15436 outrel
.r_offset
= out_off
;
15437 outrel
.r_addend
= rel
->r_addend
;
15439 /* Optimize unaligned reloc use. */
15440 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
15441 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
15442 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
15443 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
15444 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
15445 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
15446 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
15447 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
15448 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
15451 memset (&outrel
, 0, sizeof outrel
);
15452 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
15454 && r_type
!= R_PPC64_TOC
)
15456 indx
= h
->elf
.dynindx
;
15457 BFD_ASSERT (indx
!= -1);
15458 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15462 /* This symbol is local, or marked to become local,
15463 or this is an opd section reloc which must point
15464 at a local function. */
15465 outrel
.r_addend
+= relocation
;
15466 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
15468 if (is_opd
&& h
!= NULL
)
15470 /* Lie about opd entries. This case occurs
15471 when building shared libraries and we
15472 reference a function in another shared
15473 lib. The same thing happens for a weak
15474 definition in an application that's
15475 overridden by a strong definition in a
15476 shared lib. (I believe this is a generic
15477 bug in binutils handling of weak syms.)
15478 In these cases we won't use the opd
15479 entry in this lib. */
15480 unresolved_reloc
= FALSE
;
15483 && r_type
== R_PPC64_ADDR64
15485 ? h
->elf
.type
== STT_GNU_IFUNC
15486 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
15487 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15490 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
15492 /* We need to relocate .opd contents for ld.so.
15493 Prelink also wants simple and consistent rules
15494 for relocs. This make all RELATIVE relocs have
15495 *r_offset equal to r_addend. */
15502 ? h
->elf
.type
== STT_GNU_IFUNC
15503 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15505 info
->callbacks
->einfo
15506 /* xgettext:c-format */
15507 (_("%H: %s for indirect "
15508 "function `%pT' unsupported\n"),
15509 input_bfd
, input_section
, rel
->r_offset
,
15510 ppc64_elf_howto_table
[r_type
]->name
,
15514 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
15516 else if (sec
== NULL
|| sec
->owner
== NULL
)
15518 bfd_set_error (bfd_error_bad_value
);
15525 osec
= sec
->output_section
;
15526 indx
= elf_section_data (osec
)->dynindx
;
15530 if ((osec
->flags
& SEC_READONLY
) == 0
15531 && htab
->elf
.data_index_section
!= NULL
)
15532 osec
= htab
->elf
.data_index_section
;
15534 osec
= htab
->elf
.text_index_section
;
15535 indx
= elf_section_data (osec
)->dynindx
;
15537 BFD_ASSERT (indx
!= 0);
15539 /* We are turning this relocation into one
15540 against a section symbol, so subtract out
15541 the output section's address but not the
15542 offset of the input section in the output
15544 outrel
.r_addend
-= osec
->vma
;
15547 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15551 sreloc
= elf_section_data (input_section
)->sreloc
;
15553 ? h
->elf
.type
== STT_GNU_IFUNC
15554 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15556 sreloc
= htab
->elf
.irelplt
;
15558 htab
->local_ifunc_resolver
= 1;
15559 else if (is_static_defined (&h
->elf
))
15560 htab
->maybe_local_ifunc_resolver
= 1;
15562 if (sreloc
== NULL
)
15565 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
15568 loc
= sreloc
->contents
;
15569 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15570 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15572 /* If this reloc is against an external symbol, it will
15573 be computed at runtime, so there's no need to do
15574 anything now. However, for the sake of prelink ensure
15575 that the section contents are a known value. */
15578 unresolved_reloc
= FALSE
;
15579 /* The value chosen here is quite arbitrary as ld.so
15580 ignores section contents except for the special
15581 case of .opd where the contents might be accessed
15582 before relocation. Choose zero, as that won't
15583 cause reloc overflow. */
15586 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15587 to improve backward compatibility with older
15589 if (r_type
== R_PPC64_ADDR64
)
15590 addend
= outrel
.r_addend
;
15591 /* Adjust pc_relative relocs to have zero in *r_offset. */
15592 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15593 addend
= outrel
.r_offset
;
15599 case R_PPC64_GLOB_DAT
:
15600 case R_PPC64_JMP_SLOT
:
15601 case R_PPC64_JMP_IREL
:
15602 case R_PPC64_RELATIVE
:
15603 /* We shouldn't ever see these dynamic relocs in relocatable
15605 /* Fall through. */
15607 case R_PPC64_PLTGOT16
:
15608 case R_PPC64_PLTGOT16_DS
:
15609 case R_PPC64_PLTGOT16_HA
:
15610 case R_PPC64_PLTGOT16_HI
:
15611 case R_PPC64_PLTGOT16_LO
:
15612 case R_PPC64_PLTGOT16_LO_DS
:
15613 case R_PPC64_PLTREL32
:
15614 case R_PPC64_PLTREL64
:
15615 /* These ones haven't been implemented yet. */
15617 info
->callbacks
->einfo
15618 /* xgettext:c-format */
15619 (_("%P: %pB: %s is not supported for `%pT'\n"),
15621 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15623 bfd_set_error (bfd_error_invalid_operation
);
15628 /* Multi-instruction sequences that access the TOC can be
15629 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15630 to nop; addi rb,r2,x; */
15636 case R_PPC64_GOT_TLSLD16_HI
:
15637 case R_PPC64_GOT_TLSGD16_HI
:
15638 case R_PPC64_GOT_TPREL16_HI
:
15639 case R_PPC64_GOT_DTPREL16_HI
:
15640 case R_PPC64_GOT16_HI
:
15641 case R_PPC64_TOC16_HI
:
15642 /* These relocs would only be useful if building up an
15643 offset to later add to r2, perhaps in an indexed
15644 addressing mode instruction. Don't try to optimize.
15645 Unfortunately, the possibility of someone building up an
15646 offset like this or even with the HA relocs, means that
15647 we need to check the high insn when optimizing the low
15651 case R_PPC64_PLTCALL
:
15652 if (unresolved_reloc
)
15654 /* No plt entry. Make this into a direct call. */
15655 bfd_byte
*p
= contents
+ rel
->r_offset
;
15656 insn
= bfd_get_32 (input_bfd
, p
);
15658 bfd_put_32 (input_bfd
, B_DOT
| insn
, p
);
15659 bfd_put_32 (input_bfd
, NOP
, p
+ 4);
15660 unresolved_reloc
= save_unresolved_reloc
;
15661 r_type
= R_PPC64_REL24
;
15665 case R_PPC64_PLTSEQ
:
15666 if (unresolved_reloc
)
15668 unresolved_reloc
= FALSE
;
15673 case R_PPC64_PLT16_HA
:
15674 if (unresolved_reloc
)
15676 unresolved_reloc
= FALSE
;
15679 /* Fall through. */
15680 case R_PPC64_GOT_TLSLD16_HA
:
15681 case R_PPC64_GOT_TLSGD16_HA
:
15682 case R_PPC64_GOT_TPREL16_HA
:
15683 case R_PPC64_GOT_DTPREL16_HA
:
15684 case R_PPC64_GOT16_HA
:
15685 case R_PPC64_TOC16_HA
:
15686 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15687 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15691 p
= contents
+ (rel
->r_offset
& ~3);
15692 bfd_put_32 (input_bfd
, NOP
, p
);
15697 case R_PPC64_PLT16_LO
:
15698 case R_PPC64_PLT16_LO_DS
:
15699 if (unresolved_reloc
)
15701 unresolved_reloc
= FALSE
;
15704 /* Fall through. */
15705 case R_PPC64_GOT_TLSLD16_LO
:
15706 case R_PPC64_GOT_TLSGD16_LO
:
15707 case R_PPC64_GOT_TPREL16_LO_DS
:
15708 case R_PPC64_GOT_DTPREL16_LO_DS
:
15709 case R_PPC64_GOT16_LO
:
15710 case R_PPC64_GOT16_LO_DS
:
15711 case R_PPC64_TOC16_LO
:
15712 case R_PPC64_TOC16_LO_DS
:
15713 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15714 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15716 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15717 insn
= bfd_get_32 (input_bfd
, p
);
15718 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15720 /* Transform addic to addi when we change reg. */
15721 insn
&= ~((0x3f << 26) | (0x1f << 16));
15722 insn
|= (14u << 26) | (2 << 16);
15726 insn
&= ~(0x1f << 16);
15729 bfd_put_32 (input_bfd
, insn
, p
);
15733 case R_PPC64_TPREL16_HA
:
15734 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15736 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15737 insn
= bfd_get_32 (input_bfd
, p
);
15738 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15739 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15740 /* xgettext:c-format */
15741 info
->callbacks
->minfo
15742 (_("%H: warning: %s unexpected insn %#x.\n"),
15743 input_bfd
, input_section
, rel
->r_offset
,
15744 ppc64_elf_howto_table
[r_type
]->name
, insn
);
15747 bfd_put_32 (input_bfd
, NOP
, p
);
15753 case R_PPC64_TPREL16_LO
:
15754 case R_PPC64_TPREL16_LO_DS
:
15755 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15757 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15758 insn
= bfd_get_32 (input_bfd
, p
);
15759 insn
&= ~(0x1f << 16);
15761 bfd_put_32 (input_bfd
, insn
, p
);
15766 /* Do any further special processing. */
15772 case R_PPC64_REL16_HA
:
15773 case R_PPC64_REL16DX_HA
:
15774 case R_PPC64_ADDR16_HA
:
15775 case R_PPC64_ADDR16_HIGHA
:
15776 case R_PPC64_ADDR16_HIGHERA
:
15777 case R_PPC64_ADDR16_HIGHESTA
:
15778 case R_PPC64_TOC16_HA
:
15779 case R_PPC64_SECTOFF_HA
:
15780 case R_PPC64_TPREL16_HA
:
15781 case R_PPC64_TPREL16_HIGHA
:
15782 case R_PPC64_TPREL16_HIGHERA
:
15783 case R_PPC64_TPREL16_HIGHESTA
:
15784 case R_PPC64_DTPREL16_HA
:
15785 case R_PPC64_DTPREL16_HIGHA
:
15786 case R_PPC64_DTPREL16_HIGHERA
:
15787 case R_PPC64_DTPREL16_HIGHESTA
:
15788 /* It's just possible that this symbol is a weak symbol
15789 that's not actually defined anywhere. In that case,
15790 'sec' would be NULL, and we should leave the symbol
15791 alone (it will be set to zero elsewhere in the link). */
15794 /* Fall through. */
15796 case R_PPC64_GOT16_HA
:
15797 case R_PPC64_PLTGOT16_HA
:
15798 case R_PPC64_PLT16_HA
:
15799 case R_PPC64_GOT_TLSGD16_HA
:
15800 case R_PPC64_GOT_TLSLD16_HA
:
15801 case R_PPC64_GOT_TPREL16_HA
:
15802 case R_PPC64_GOT_DTPREL16_HA
:
15803 /* Add 0x10000 if sign bit in 0:15 is set.
15804 Bits 0:15 are not used. */
15808 case R_PPC64_ADDR16_DS
:
15809 case R_PPC64_ADDR16_LO_DS
:
15810 case R_PPC64_GOT16_DS
:
15811 case R_PPC64_GOT16_LO_DS
:
15812 case R_PPC64_PLT16_LO_DS
:
15813 case R_PPC64_SECTOFF_DS
:
15814 case R_PPC64_SECTOFF_LO_DS
:
15815 case R_PPC64_TOC16_DS
:
15816 case R_PPC64_TOC16_LO_DS
:
15817 case R_PPC64_PLTGOT16_DS
:
15818 case R_PPC64_PLTGOT16_LO_DS
:
15819 case R_PPC64_GOT_TPREL16_DS
:
15820 case R_PPC64_GOT_TPREL16_LO_DS
:
15821 case R_PPC64_GOT_DTPREL16_DS
:
15822 case R_PPC64_GOT_DTPREL16_LO_DS
:
15823 case R_PPC64_TPREL16_DS
:
15824 case R_PPC64_TPREL16_LO_DS
:
15825 case R_PPC64_DTPREL16_DS
:
15826 case R_PPC64_DTPREL16_LO_DS
:
15827 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15829 /* If this reloc is against an lq, lxv, or stxv insn, then
15830 the value must be a multiple of 16. This is somewhat of
15831 a hack, but the "correct" way to do this by defining _DQ
15832 forms of all the _DS relocs bloats all reloc switches in
15833 this file. It doesn't make much sense to use these
15834 relocs in data, so testing the insn should be safe. */
15835 if ((insn
& (0x3f << 26)) == (56u << 26)
15836 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15838 relocation
+= addend
;
15839 addend
= insn
& (mask
^ 3);
15840 if ((relocation
& mask
) != 0)
15842 relocation
^= relocation
& mask
;
15843 info
->callbacks
->einfo
15844 /* xgettext:c-format */
15845 (_("%H: error: %s not a multiple of %u\n"),
15846 input_bfd
, input_section
, rel
->r_offset
,
15847 ppc64_elf_howto_table
[r_type
]->name
,
15849 bfd_set_error (bfd_error_bad_value
);
15856 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15857 because such sections are not SEC_ALLOC and thus ld.so will
15858 not process them. */
15859 howto
= ppc64_elf_howto_table
[(int) r_type
];
15860 if (unresolved_reloc
15861 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15862 && h
->elf
.def_dynamic
)
15863 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15864 rel
->r_offset
) != (bfd_vma
) -1)
15866 info
->callbacks
->einfo
15867 /* xgettext:c-format */
15868 (_("%H: unresolvable %s against `%pT'\n"),
15869 input_bfd
, input_section
, rel
->r_offset
,
15871 h
->elf
.root
.root
.string
);
15875 /* 16-bit fields in insns mostly have signed values, but a
15876 few insns have 16-bit unsigned values. Really, we should
15877 have different reloc types. */
15878 if (howto
->complain_on_overflow
!= complain_overflow_dont
15879 && howto
->dst_mask
== 0xffff
15880 && (input_section
->flags
& SEC_CODE
) != 0)
15882 enum complain_overflow complain
= complain_overflow_signed
;
15884 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15885 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15886 complain
= complain_overflow_bitfield
;
15887 else if (howto
->rightshift
== 0
15888 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15889 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15890 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15891 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15892 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15893 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15894 complain
= complain_overflow_unsigned
;
15895 if (howto
->complain_on_overflow
!= complain
)
15897 alt_howto
= *howto
;
15898 alt_howto
.complain_on_overflow
= complain
;
15899 howto
= &alt_howto
;
15903 if (r_type
== R_PPC64_REL16DX_HA
)
15905 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15906 if (rel
->r_offset
+ 4 > input_section
->size
)
15907 r
= bfd_reloc_outofrange
;
15910 relocation
+= addend
;
15911 relocation
-= (rel
->r_offset
15912 + input_section
->output_offset
15913 + input_section
->output_section
->vma
);
15914 relocation
= (bfd_signed_vma
) relocation
>> 16;
15915 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15917 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15918 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15920 if (relocation
+ 0x8000 > 0xffff)
15921 r
= bfd_reloc_overflow
;
15925 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15926 rel
->r_offset
, relocation
, addend
);
15928 if (r
!= bfd_reloc_ok
)
15930 char *more_info
= NULL
;
15931 const char *reloc_name
= howto
->name
;
15933 if (reloc_dest
!= DEST_NORMAL
)
15935 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15936 if (more_info
!= NULL
)
15938 strcpy (more_info
, reloc_name
);
15939 strcat (more_info
, (reloc_dest
== DEST_OPD
15940 ? " (OPD)" : " (stub)"));
15941 reloc_name
= more_info
;
15945 if (r
== bfd_reloc_overflow
)
15947 /* On code like "if (foo) foo();" don't report overflow
15948 on a branch to zero when foo is undefined. */
15950 && (reloc_dest
== DEST_STUB
15952 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15953 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15954 && is_branch_reloc (r_type
))))
15955 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15956 sym_name
, reloc_name
,
15958 input_bfd
, input_section
,
15963 info
->callbacks
->einfo
15964 /* xgettext:c-format */
15965 (_("%H: %s against `%pT': error %d\n"),
15966 input_bfd
, input_section
, rel
->r_offset
,
15967 reloc_name
, sym_name
, (int) r
);
15970 if (more_info
!= NULL
)
15980 Elf_Internal_Shdr
*rel_hdr
;
15981 size_t deleted
= rel
- wrel
;
15983 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15984 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15985 if (rel_hdr
->sh_size
== 0)
15987 /* It is too late to remove an empty reloc section. Leave
15989 ??? What is wrong with an empty section??? */
15990 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15993 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15994 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15995 input_section
->reloc_count
-= deleted
;
15998 /* If we're emitting relocations, then shortly after this function
15999 returns, reloc offsets and addends for this section will be
16000 adjusted. Worse, reloc symbol indices will be for the output
16001 file rather than the input. Save a copy of the relocs for
16002 opd_entry_value. */
16003 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
16006 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
16007 rel
= bfd_alloc (input_bfd
, amt
);
16008 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
16009 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
16012 memcpy (rel
, relocs
, amt
);
16017 /* Adjust the value of any local symbols in opd sections. */
16020 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
16021 const char *name ATTRIBUTE_UNUSED
,
16022 Elf_Internal_Sym
*elfsym
,
16023 asection
*input_sec
,
16024 struct elf_link_hash_entry
*h
)
16026 struct _opd_sec_data
*opd
;
16033 opd
= get_opd_info (input_sec
);
16034 if (opd
== NULL
|| opd
->adjust
== NULL
)
16037 value
= elfsym
->st_value
- input_sec
->output_offset
;
16038 if (!bfd_link_relocatable (info
))
16039 value
-= input_sec
->output_section
->vma
;
16041 adjust
= opd
->adjust
[OPD_NDX (value
)];
16045 elfsym
->st_value
+= adjust
;
16049 /* Finish up dynamic symbol handling. We set the contents of various
16050 dynamic sections here. */
16053 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
16054 struct bfd_link_info
*info
,
16055 struct elf_link_hash_entry
*h
,
16056 Elf_Internal_Sym
*sym
)
16058 struct ppc_link_hash_table
*htab
;
16059 struct plt_entry
*ent
;
16061 htab
= ppc_hash_table (info
);
16065 if (!htab
->opd_abi
&& !h
->def_regular
)
16066 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
16067 if (ent
->plt
.offset
!= (bfd_vma
) -1)
16069 /* Mark the symbol as undefined, rather than as
16070 defined in glink. Leave the value if there were
16071 any relocations where pointer equality matters
16072 (this is a clue for the dynamic linker, to make
16073 function pointer comparisons work between an
16074 application and shared library), otherwise set it
16076 sym
->st_shndx
= SHN_UNDEF
;
16077 if (!h
->pointer_equality_needed
)
16079 else if (!h
->ref_regular_nonweak
)
16081 /* This breaks function pointer comparisons, but
16082 that is better than breaking tests for a NULL
16083 function pointer. */
16091 /* This symbol needs a copy reloc. Set it up. */
16092 Elf_Internal_Rela rela
;
16096 if (h
->dynindx
== -1
16097 || (h
->root
.type
!= bfd_link_hash_defined
16098 && h
->root
.type
!= bfd_link_hash_defweak
)
16099 || htab
->elf
.srelbss
== NULL
16100 || htab
->elf
.sreldynrelro
== NULL
)
16103 rela
.r_offset
= (h
->root
.u
.def
.value
16104 + h
->root
.u
.def
.section
->output_section
->vma
16105 + h
->root
.u
.def
.section
->output_offset
);
16106 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
16108 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
16109 srel
= htab
->elf
.sreldynrelro
;
16111 srel
= htab
->elf
.srelbss
;
16112 loc
= srel
->contents
;
16113 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
16114 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
16120 /* Used to decide how to sort relocs in an optimal manner for the
16121 dynamic linker, before writing them out. */
16123 static enum elf_reloc_type_class
16124 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
16125 const asection
*rel_sec
,
16126 const Elf_Internal_Rela
*rela
)
16128 enum elf_ppc64_reloc_type r_type
;
16129 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
16131 if (rel_sec
== htab
->elf
.irelplt
)
16132 return reloc_class_ifunc
;
16134 r_type
= ELF64_R_TYPE (rela
->r_info
);
16137 case R_PPC64_RELATIVE
:
16138 return reloc_class_relative
;
16139 case R_PPC64_JMP_SLOT
:
16140 return reloc_class_plt
;
16142 return reloc_class_copy
;
16144 return reloc_class_normal
;
16148 /* Finish up the dynamic sections. */
16151 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
16152 struct bfd_link_info
*info
)
16154 struct ppc_link_hash_table
*htab
;
16158 htab
= ppc_hash_table (info
);
16162 dynobj
= htab
->elf
.dynobj
;
16163 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
16165 if (htab
->elf
.dynamic_sections_created
)
16167 Elf64_External_Dyn
*dyncon
, *dynconend
;
16169 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
16172 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
16173 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
16174 for (; dyncon
< dynconend
; dyncon
++)
16176 Elf_Internal_Dyn dyn
;
16179 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
16186 case DT_PPC64_GLINK
:
16188 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
16189 /* We stupidly defined DT_PPC64_GLINK to be the start
16190 of glink rather than the first entry point, which is
16191 what ld.so needs, and now have a bigger stub to
16192 support automatic multiple TOCs. */
16193 dyn
.d_un
.d_ptr
+= GLINK_PLTRESOLVE_SIZE (htab
) - 8 * 4;
16197 s
= bfd_get_section_by_name (output_bfd
, ".opd");
16200 dyn
.d_un
.d_ptr
= s
->vma
;
16204 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
16205 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
16206 if (htab
->has_plt_localentry0
)
16207 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
16210 case DT_PPC64_OPDSZ
:
16211 s
= bfd_get_section_by_name (output_bfd
, ".opd");
16214 dyn
.d_un
.d_val
= s
->size
;
16218 s
= htab
->elf
.splt
;
16219 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
16223 s
= htab
->elf
.srelplt
;
16224 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
16228 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
16232 if (htab
->local_ifunc_resolver
)
16233 info
->callbacks
->einfo
16234 (_("%X%P: text relocations and GNU indirect "
16235 "functions will result in a segfault at runtime\n"));
16236 else if (htab
->maybe_local_ifunc_resolver
)
16237 info
->callbacks
->einfo
16238 (_("%P: warning: text relocations and GNU indirect "
16239 "functions may result in a segfault at runtime\n"));
16243 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
16247 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
16248 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
16250 /* Fill in the first entry in the global offset table.
16251 We use it to hold the link-time TOCbase. */
16252 bfd_put_64 (output_bfd
,
16253 elf_gp (output_bfd
) + TOC_BASE_OFF
,
16254 htab
->elf
.sgot
->contents
);
16256 /* Set .got entry size. */
16257 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
16260 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
16261 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
16263 /* Set .plt entry size. */
16264 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
16265 = PLT_ENTRY_SIZE (htab
);
16268 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
16269 brlt ourselves if emitrelocations. */
16270 if (htab
->brlt
!= NULL
16271 && htab
->brlt
->reloc_count
!= 0
16272 && !_bfd_elf_link_output_relocs (output_bfd
,
16274 elf_section_data (htab
->brlt
)->rela
.hdr
,
16275 elf_section_data (htab
->brlt
)->relocs
,
16279 if (htab
->glink
!= NULL
16280 && htab
->glink
->reloc_count
!= 0
16281 && !_bfd_elf_link_output_relocs (output_bfd
,
16283 elf_section_data (htab
->glink
)->rela
.hdr
,
16284 elf_section_data (htab
->glink
)->relocs
,
16288 if (htab
->glink_eh_frame
!= NULL
16289 && htab
->glink_eh_frame
->size
!= 0)
16293 struct map_stub
*group
;
16296 p
= htab
->glink_eh_frame
->contents
;
16297 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
16299 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
16300 if (group
->stub_sec
!= NULL
)
16302 /* Offset to stub section. */
16303 val
= (group
->stub_sec
->output_section
->vma
16304 + group
->stub_sec
->output_offset
);
16305 val
-= (htab
->glink_eh_frame
->output_section
->vma
16306 + htab
->glink_eh_frame
->output_offset
16307 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
16308 if (val
+ 0x80000000 > 0xffffffff)
16311 (_("%s offset too large for .eh_frame sdata4 encoding"),
16312 group
->stub_sec
->name
);
16315 bfd_put_32 (dynobj
, val
, p
+ 8);
16316 p
+= stub_eh_frame_size (group
, align
);
16318 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
16320 /* Offset to .glink. */
16321 val
= (htab
->glink
->output_section
->vma
16322 + htab
->glink
->output_offset
16324 val
-= (htab
->glink_eh_frame
->output_section
->vma
16325 + htab
->glink_eh_frame
->output_offset
16326 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
16327 if (val
+ 0x80000000 > 0xffffffff)
16330 (_("%s offset too large for .eh_frame sdata4 encoding"),
16331 htab
->glink
->name
);
16334 bfd_put_32 (dynobj
, val
, p
+ 8);
16335 p
+= (24 + align
- 1) & -align
;
16338 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
16339 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
16340 htab
->glink_eh_frame
,
16341 htab
->glink_eh_frame
->contents
))
16345 /* We need to handle writing out multiple GOT sections ourselves,
16346 since we didn't add them to DYNOBJ. We know dynobj is the first
16348 while ((dynobj
= dynobj
->link
.next
) != NULL
)
16352 if (!is_ppc64_elf (dynobj
))
16355 s
= ppc64_elf_tdata (dynobj
)->got
;
16358 && s
->output_section
!= bfd_abs_section_ptr
16359 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
16360 s
->contents
, s
->output_offset
,
16363 s
= ppc64_elf_tdata (dynobj
)->relgot
;
16366 && s
->output_section
!= bfd_abs_section_ptr
16367 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
16368 s
->contents
, s
->output_offset
,
16376 #include "elf64-target.h"
16378 /* FreeBSD support */
16380 #undef TARGET_LITTLE_SYM
16381 #undef TARGET_LITTLE_NAME
16383 #undef TARGET_BIG_SYM
16384 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
16385 #undef TARGET_BIG_NAME
16386 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
16389 #define ELF_OSABI ELFOSABI_FREEBSD
16392 #define elf64_bed elf64_powerpc_fbsd_bed
16394 #include "elf64-target.h"