1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
57 static bfd_vma opd_entry_value
58 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
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_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
111 #define elf_backend_action_discarded ppc64_elf_action_discarded
112 #define elf_backend_relocate_section ppc64_elf_relocate_section
113 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
114 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
115 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
116 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
117 #define elf_backend_special_sections ppc64_elf_special_sections
118 #define elf_backend_post_process_headers _bfd_elf_set_osabi
120 /* The name of the dynamic interpreter. This is put in the .interp
122 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124 /* The size in bytes of an entry in the procedure linkage table. */
125 #define PLT_ENTRY_SIZE 24
127 /* The initial size of the plt reserved for the dynamic linker. */
128 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
130 /* TOC base pointers offset from start of TOC. */
131 #define TOC_BASE_OFF 0x8000
133 /* Offset of tp and dtp pointers from start of TLS block. */
134 #define TP_OFFSET 0x7000
135 #define DTP_OFFSET 0x8000
137 /* .plt call stub instructions. The normal stub is like this, but
138 sometimes the .plt entry crosses a 64k boundary and we need to
139 insert an addi to adjust r12. */
140 #define PLT_CALL_STUB_SIZE (7*4)
141 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
142 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
143 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
144 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
145 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
146 /* ld %r11,xxx+16@l(%r12) */
147 #define BCTR 0x4e800420 /* bctr */
150 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
151 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
152 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
153 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
155 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
156 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
158 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
160 /* glink call stub instructions. We enter with the index in R0. */
161 #define GLINK_CALL_STUB_SIZE (16*4)
165 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
166 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
168 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
169 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
170 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
171 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
179 #define NOP 0x60000000
181 /* Some other nops. */
182 #define CROR_151515 0x4def7b82
183 #define CROR_313131 0x4ffffb82
185 /* .glink entries for the first 32k functions are two instructions. */
186 #define LI_R0_0 0x38000000 /* li %r0,0 */
187 #define B_DOT 0x48000000 /* b . */
189 /* After that, we need two instructions to load the index, followed by
191 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
192 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
194 /* Instructions used by the save and restore reg functions. */
195 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
196 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
197 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
198 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
199 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
200 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
201 #define LI_R12_0 0x39800000 /* li %r12,0 */
202 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
203 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
204 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
205 #define BLR 0x4e800020 /* blr */
207 /* Since .opd is an array of descriptors and each entry will end up
208 with identical R_PPC64_RELATIVE relocs, there is really no need to
209 propagate .opd relocs; The dynamic linker should be taught to
210 relocate .opd without reloc entries. */
211 #ifndef NO_OPD_RELOCS
212 #define NO_OPD_RELOCS 0
215 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
217 /* Relocation HOWTO's. */
218 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
220 static reloc_howto_type ppc64_elf_howto_raw
[] = {
221 /* This reloc does nothing. */
222 HOWTO (R_PPC64_NONE
, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE
, /* pc_relative */
228 complain_overflow_dont
, /* complain_on_overflow */
229 bfd_elf_generic_reloc
, /* special_function */
230 "R_PPC64_NONE", /* name */
231 FALSE
, /* partial_inplace */
234 FALSE
), /* pcrel_offset */
236 /* A standard 32 bit relocation. */
237 HOWTO (R_PPC64_ADDR32
, /* type */
239 2, /* size (0 = byte, 1 = short, 2 = long) */
241 FALSE
, /* pc_relative */
243 complain_overflow_bitfield
, /* complain_on_overflow */
244 bfd_elf_generic_reloc
, /* special_function */
245 "R_PPC64_ADDR32", /* name */
246 FALSE
, /* partial_inplace */
248 0xffffffff, /* dst_mask */
249 FALSE
), /* pcrel_offset */
251 /* An absolute 26 bit branch; the lower two bits must be zero.
252 FIXME: we don't check that, we just clear them. */
253 HOWTO (R_PPC64_ADDR24
, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE
, /* pc_relative */
259 complain_overflow_bitfield
, /* complain_on_overflow */
260 bfd_elf_generic_reloc
, /* special_function */
261 "R_PPC64_ADDR24", /* name */
262 FALSE
, /* partial_inplace */
264 0x03fffffc, /* dst_mask */
265 FALSE
), /* pcrel_offset */
267 /* A standard 16 bit relocation. */
268 HOWTO (R_PPC64_ADDR16
, /* type */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
272 FALSE
, /* pc_relative */
274 complain_overflow_bitfield
, /* complain_on_overflow */
275 bfd_elf_generic_reloc
, /* special_function */
276 "R_PPC64_ADDR16", /* name */
277 FALSE
, /* partial_inplace */
279 0xffff, /* dst_mask */
280 FALSE
), /* pcrel_offset */
282 /* A 16 bit relocation without overflow. */
283 HOWTO (R_PPC64_ADDR16_LO
, /* type */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE
, /* pc_relative */
289 complain_overflow_dont
,/* complain_on_overflow */
290 bfd_elf_generic_reloc
, /* special_function */
291 "R_PPC64_ADDR16_LO", /* name */
292 FALSE
, /* partial_inplace */
294 0xffff, /* dst_mask */
295 FALSE
), /* pcrel_offset */
297 /* Bits 16-31 of an address. */
298 HOWTO (R_PPC64_ADDR16_HI
, /* type */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
302 FALSE
, /* pc_relative */
304 complain_overflow_dont
, /* complain_on_overflow */
305 bfd_elf_generic_reloc
, /* special_function */
306 "R_PPC64_ADDR16_HI", /* name */
307 FALSE
, /* partial_inplace */
309 0xffff, /* dst_mask */
310 FALSE
), /* pcrel_offset */
312 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
313 bits, treated as a signed number, is negative. */
314 HOWTO (R_PPC64_ADDR16_HA
, /* type */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE
, /* pc_relative */
320 complain_overflow_dont
, /* complain_on_overflow */
321 ppc64_elf_ha_reloc
, /* special_function */
322 "R_PPC64_ADDR16_HA", /* name */
323 FALSE
, /* partial_inplace */
325 0xffff, /* dst_mask */
326 FALSE
), /* pcrel_offset */
328 /* An absolute 16 bit branch; the lower two bits must be zero.
329 FIXME: we don't check that, we just clear them. */
330 HOWTO (R_PPC64_ADDR14
, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_bitfield
, /* complain_on_overflow */
337 ppc64_elf_branch_reloc
, /* special_function */
338 "R_PPC64_ADDR14", /* name */
339 FALSE
, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is expected to be taken. The lower two
346 bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc
, /* special_function */
355 "R_PPC64_ADDR14_BRTAKEN",/* name */
356 FALSE
, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* An absolute 16 bit branch, for which bit 10 should be set to
362 indicate that the branch is not expected to be taken. The lower
363 two bits must be zero. */
364 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
368 FALSE
, /* pc_relative */
370 complain_overflow_bitfield
, /* complain_on_overflow */
371 ppc64_elf_brtaken_reloc
, /* special_function */
372 "R_PPC64_ADDR14_BRNTAKEN",/* name */
373 FALSE
, /* partial_inplace */
375 0x0000fffc, /* dst_mask */
376 FALSE
), /* pcrel_offset */
378 /* A relative 26 bit branch; the lower two bits must be zero. */
379 HOWTO (R_PPC64_REL24
, /* type */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
383 TRUE
, /* pc_relative */
385 complain_overflow_signed
, /* complain_on_overflow */
386 ppc64_elf_branch_reloc
, /* special_function */
387 "R_PPC64_REL24", /* name */
388 FALSE
, /* partial_inplace */
390 0x03fffffc, /* dst_mask */
391 TRUE
), /* pcrel_offset */
393 /* A relative 16 bit branch; the lower two bits must be zero. */
394 HOWTO (R_PPC64_REL14
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 ppc64_elf_branch_reloc
, /* special_function */
402 "R_PPC64_REL14", /* name */
403 FALSE
, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE
), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is expected to be taken. The lower two bits must be
411 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE
, /* pc_relative */
417 complain_overflow_signed
, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc
, /* special_function */
419 "R_PPC64_REL14_BRTAKEN", /* name */
420 FALSE
, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE
), /* pcrel_offset */
425 /* A relative 16 bit branch. Bit 10 should be set to indicate that
426 the branch is not expected to be taken. The lower two bits must
428 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
430 2, /* size (0 = byte, 1 = short, 2 = long) */
432 TRUE
, /* pc_relative */
434 complain_overflow_signed
, /* complain_on_overflow */
435 ppc64_elf_brtaken_reloc
, /* special_function */
436 "R_PPC64_REL14_BRNTAKEN",/* name */
437 FALSE
, /* partial_inplace */
439 0x0000fffc, /* dst_mask */
440 TRUE
), /* pcrel_offset */
442 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
444 HOWTO (R_PPC64_GOT16
, /* type */
446 1, /* size (0 = byte, 1 = short, 2 = long) */
448 FALSE
, /* pc_relative */
450 complain_overflow_signed
, /* complain_on_overflow */
451 ppc64_elf_unhandled_reloc
, /* special_function */
452 "R_PPC64_GOT16", /* name */
453 FALSE
, /* partial_inplace */
455 0xffff, /* dst_mask */
456 FALSE
), /* pcrel_offset */
458 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
460 HOWTO (R_PPC64_GOT16_LO
, /* type */
462 1, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
, /* complain_on_overflow */
467 ppc64_elf_unhandled_reloc
, /* special_function */
468 "R_PPC64_GOT16_LO", /* name */
469 FALSE
, /* partial_inplace */
471 0xffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
474 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
476 HOWTO (R_PPC64_GOT16_HI
, /* type */
478 1, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE
, /* pc_relative */
482 complain_overflow_dont
,/* complain_on_overflow */
483 ppc64_elf_unhandled_reloc
, /* special_function */
484 "R_PPC64_GOT16_HI", /* name */
485 FALSE
, /* partial_inplace */
487 0xffff, /* dst_mask */
488 FALSE
), /* pcrel_offset */
490 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
492 HOWTO (R_PPC64_GOT16_HA
, /* type */
494 1, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_dont
,/* complain_on_overflow */
499 ppc64_elf_unhandled_reloc
, /* special_function */
500 "R_PPC64_GOT16_HA", /* name */
501 FALSE
, /* partial_inplace */
503 0xffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 /* This is used only by the dynamic linker. The symbol should exist
507 both in the object being run and in some shared library. The
508 dynamic linker copies the data addressed by the symbol from the
509 shared library into the object, because the object being
510 run has to have the data at some particular address. */
511 HOWTO (R_PPC64_COPY
, /* type */
513 0, /* this one is variable size */
515 FALSE
, /* pc_relative */
517 complain_overflow_dont
, /* complain_on_overflow */
518 ppc64_elf_unhandled_reloc
, /* special_function */
519 "R_PPC64_COPY", /* name */
520 FALSE
, /* partial_inplace */
523 FALSE
), /* pcrel_offset */
525 /* Like R_PPC64_ADDR64, but used when setting global offset table
527 HOWTO (R_PPC64_GLOB_DAT
, /* type */
529 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
531 FALSE
, /* pc_relative */
533 complain_overflow_dont
, /* complain_on_overflow */
534 ppc64_elf_unhandled_reloc
, /* special_function */
535 "R_PPC64_GLOB_DAT", /* name */
536 FALSE
, /* partial_inplace */
538 ONES (64), /* dst_mask */
539 FALSE
), /* pcrel_offset */
541 /* Created by the link editor. Marks a procedure linkage table
542 entry for a symbol. */
543 HOWTO (R_PPC64_JMP_SLOT
, /* type */
545 0, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE
, /* pc_relative */
549 complain_overflow_dont
, /* complain_on_overflow */
550 ppc64_elf_unhandled_reloc
, /* special_function */
551 "R_PPC64_JMP_SLOT", /* name */
552 FALSE
, /* partial_inplace */
555 FALSE
), /* pcrel_offset */
557 /* Used only by the dynamic linker. When the object is run, this
558 doubleword64 is set to the load address of the object, plus the
560 HOWTO (R_PPC64_RELATIVE
, /* type */
562 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
564 FALSE
, /* pc_relative */
566 complain_overflow_dont
, /* complain_on_overflow */
567 bfd_elf_generic_reloc
, /* special_function */
568 "R_PPC64_RELATIVE", /* name */
569 FALSE
, /* partial_inplace */
571 ONES (64), /* dst_mask */
572 FALSE
), /* pcrel_offset */
574 /* Like R_PPC64_ADDR32, but may be unaligned. */
575 HOWTO (R_PPC64_UADDR32
, /* type */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE
, /* pc_relative */
581 complain_overflow_bitfield
, /* complain_on_overflow */
582 bfd_elf_generic_reloc
, /* special_function */
583 "R_PPC64_UADDR32", /* name */
584 FALSE
, /* partial_inplace */
586 0xffffffff, /* dst_mask */
587 FALSE
), /* pcrel_offset */
589 /* Like R_PPC64_ADDR16, but may be unaligned. */
590 HOWTO (R_PPC64_UADDR16
, /* type */
592 1, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_bitfield
, /* complain_on_overflow */
597 bfd_elf_generic_reloc
, /* special_function */
598 "R_PPC64_UADDR16", /* name */
599 FALSE
, /* partial_inplace */
601 0xffff, /* dst_mask */
602 FALSE
), /* pcrel_offset */
604 /* 32-bit PC relative. */
605 HOWTO (R_PPC64_REL32
, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 TRUE
, /* pc_relative */
611 /* FIXME: Verify. Was complain_overflow_bitfield. */
612 complain_overflow_signed
, /* complain_on_overflow */
613 bfd_elf_generic_reloc
, /* special_function */
614 "R_PPC64_REL32", /* name */
615 FALSE
, /* partial_inplace */
617 0xffffffff, /* dst_mask */
618 TRUE
), /* pcrel_offset */
620 /* 32-bit relocation to the symbol's procedure linkage table. */
621 HOWTO (R_PPC64_PLT32
, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 FALSE
, /* pc_relative */
627 complain_overflow_bitfield
, /* complain_on_overflow */
628 ppc64_elf_unhandled_reloc
, /* special_function */
629 "R_PPC64_PLT32", /* name */
630 FALSE
, /* partial_inplace */
632 0xffffffff, /* dst_mask */
633 FALSE
), /* pcrel_offset */
635 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
636 FIXME: R_PPC64_PLTREL32 not supported. */
637 HOWTO (R_PPC64_PLTREL32
, /* type */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
641 TRUE
, /* pc_relative */
643 complain_overflow_signed
, /* complain_on_overflow */
644 bfd_elf_generic_reloc
, /* special_function */
645 "R_PPC64_PLTREL32", /* name */
646 FALSE
, /* partial_inplace */
648 0xffffffff, /* dst_mask */
649 TRUE
), /* pcrel_offset */
651 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
653 HOWTO (R_PPC64_PLT16_LO
, /* type */
655 1, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE
, /* pc_relative */
659 complain_overflow_dont
, /* complain_on_overflow */
660 ppc64_elf_unhandled_reloc
, /* special_function */
661 "R_PPC64_PLT16_LO", /* name */
662 FALSE
, /* partial_inplace */
664 0xffff, /* dst_mask */
665 FALSE
), /* pcrel_offset */
667 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
669 HOWTO (R_PPC64_PLT16_HI
, /* type */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
673 FALSE
, /* pc_relative */
675 complain_overflow_dont
, /* complain_on_overflow */
676 ppc64_elf_unhandled_reloc
, /* special_function */
677 "R_PPC64_PLT16_HI", /* name */
678 FALSE
, /* partial_inplace */
680 0xffff, /* dst_mask */
681 FALSE
), /* pcrel_offset */
683 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
685 HOWTO (R_PPC64_PLT16_HA
, /* type */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
, /* complain_on_overflow */
692 ppc64_elf_unhandled_reloc
, /* special_function */
693 "R_PPC64_PLT16_HA", /* name */
694 FALSE
, /* partial_inplace */
696 0xffff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 /* 16-bit section relative relocation. */
700 HOWTO (R_PPC64_SECTOFF
, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 FALSE
, /* pc_relative */
706 complain_overflow_bitfield
, /* complain_on_overflow */
707 ppc64_elf_sectoff_reloc
, /* special_function */
708 "R_PPC64_SECTOFF", /* name */
709 FALSE
, /* partial_inplace */
711 0xffff, /* dst_mask */
712 FALSE
), /* pcrel_offset */
714 /* Like R_PPC64_SECTOFF, but no overflow warning. */
715 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE
, /* pc_relative */
721 complain_overflow_dont
, /* complain_on_overflow */
722 ppc64_elf_sectoff_reloc
, /* special_function */
723 "R_PPC64_SECTOFF_LO", /* name */
724 FALSE
, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE
), /* pcrel_offset */
729 /* 16-bit upper half section relative relocation. */
730 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
734 FALSE
, /* pc_relative */
736 complain_overflow_dont
, /* complain_on_overflow */
737 ppc64_elf_sectoff_reloc
, /* special_function */
738 "R_PPC64_SECTOFF_HI", /* name */
739 FALSE
, /* partial_inplace */
741 0xffff, /* dst_mask */
742 FALSE
), /* pcrel_offset */
744 /* 16-bit upper half adjusted section relative relocation. */
745 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
749 FALSE
, /* pc_relative */
751 complain_overflow_dont
, /* complain_on_overflow */
752 ppc64_elf_sectoff_ha_reloc
, /* special_function */
753 "R_PPC64_SECTOFF_HA", /* name */
754 FALSE
, /* partial_inplace */
756 0xffff, /* dst_mask */
757 FALSE
), /* pcrel_offset */
759 /* Like R_PPC64_REL24 without touching the two least significant bits. */
760 HOWTO (R_PPC64_REL30
, /* type */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
764 TRUE
, /* pc_relative */
766 complain_overflow_dont
, /* complain_on_overflow */
767 bfd_elf_generic_reloc
, /* special_function */
768 "R_PPC64_REL30", /* name */
769 FALSE
, /* partial_inplace */
771 0xfffffffc, /* dst_mask */
772 TRUE
), /* pcrel_offset */
774 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
776 /* A standard 64-bit relocation. */
777 HOWTO (R_PPC64_ADDR64
, /* type */
779 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
781 FALSE
, /* pc_relative */
783 complain_overflow_dont
, /* complain_on_overflow */
784 bfd_elf_generic_reloc
, /* special_function */
785 "R_PPC64_ADDR64", /* name */
786 FALSE
, /* partial_inplace */
788 ONES (64), /* dst_mask */
789 FALSE
), /* pcrel_offset */
791 /* The bits 32-47 of an address. */
792 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_dont
, /* complain_on_overflow */
799 bfd_elf_generic_reloc
, /* special_function */
800 "R_PPC64_ADDR16_HIGHER", /* name */
801 FALSE
, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE
), /* pcrel_offset */
806 /* The bits 32-47 of an address, plus 1 if the contents of the low
807 16 bits, treated as a signed number, is negative. */
808 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
812 FALSE
, /* pc_relative */
814 complain_overflow_dont
, /* complain_on_overflow */
815 ppc64_elf_ha_reloc
, /* special_function */
816 "R_PPC64_ADDR16_HIGHERA", /* name */
817 FALSE
, /* partial_inplace */
819 0xffff, /* dst_mask */
820 FALSE
), /* pcrel_offset */
822 /* The bits 48-63 of an address. */
823 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
825 1, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 bfd_elf_generic_reloc
, /* special_function */
831 "R_PPC64_ADDR16_HIGHEST", /* name */
832 FALSE
, /* partial_inplace */
834 0xffff, /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* The bits 48-63 of an address, plus 1 if the contents of the low
838 16 bits, treated as a signed number, is negative. */
839 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
841 1, /* size (0 = byte, 1 = short, 2 = long) */
843 FALSE
, /* pc_relative */
845 complain_overflow_dont
, /* complain_on_overflow */
846 ppc64_elf_ha_reloc
, /* special_function */
847 "R_PPC64_ADDR16_HIGHESTA", /* name */
848 FALSE
, /* partial_inplace */
850 0xffff, /* dst_mask */
851 FALSE
), /* pcrel_offset */
853 /* Like ADDR64, but may be unaligned. */
854 HOWTO (R_PPC64_UADDR64
, /* type */
856 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
858 FALSE
, /* pc_relative */
860 complain_overflow_dont
, /* complain_on_overflow */
861 bfd_elf_generic_reloc
, /* special_function */
862 "R_PPC64_UADDR64", /* name */
863 FALSE
, /* partial_inplace */
865 ONES (64), /* dst_mask */
866 FALSE
), /* pcrel_offset */
868 /* 64-bit relative relocation. */
869 HOWTO (R_PPC64_REL64
, /* type */
871 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
873 TRUE
, /* pc_relative */
875 complain_overflow_dont
, /* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_PPC64_REL64", /* name */
878 FALSE
, /* partial_inplace */
880 ONES (64), /* dst_mask */
881 TRUE
), /* pcrel_offset */
883 /* 64-bit relocation to the symbol's procedure linkage table. */
884 HOWTO (R_PPC64_PLT64
, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 FALSE
, /* pc_relative */
890 complain_overflow_dont
, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc
, /* special_function */
892 "R_PPC64_PLT64", /* name */
893 FALSE
, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 FALSE
), /* pcrel_offset */
898 /* 64-bit PC relative relocation to the symbol's procedure linkage
900 /* FIXME: R_PPC64_PLTREL64 not supported. */
901 HOWTO (R_PPC64_PLTREL64
, /* type */
903 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
905 TRUE
, /* pc_relative */
907 complain_overflow_dont
, /* complain_on_overflow */
908 ppc64_elf_unhandled_reloc
, /* special_function */
909 "R_PPC64_PLTREL64", /* name */
910 FALSE
, /* partial_inplace */
912 ONES (64), /* dst_mask */
913 TRUE
), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation. */
917 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
918 HOWTO (R_PPC64_TOC16
, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_signed
, /* complain_on_overflow */
925 ppc64_elf_toc_reloc
, /* special_function */
926 "R_PPC64_TOC16", /* name */
927 FALSE
, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation without overflow. */
934 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_LO
, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 ppc64_elf_toc_reloc
, /* special_function */
943 "R_PPC64_TOC16_LO", /* name */
944 FALSE
, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits. */
951 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
952 HOWTO (R_PPC64_TOC16_HI
, /* type */
954 1, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE
, /* pc_relative */
958 complain_overflow_dont
, /* complain_on_overflow */
959 ppc64_elf_toc_reloc
, /* special_function */
960 "R_PPC64_TOC16_HI", /* name */
961 FALSE
, /* partial_inplace */
963 0xffff, /* dst_mask */
964 FALSE
), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
967 contents of the low 16 bits, treated as a signed number, is
970 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_HA
, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_dont
, /* complain_on_overflow */
978 ppc64_elf_toc_ha_reloc
, /* special_function */
979 "R_PPC64_TOC16_HA", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* 64-bit relocation; insert value of TOC base (.TOC.). */
987 /* R_PPC64_TOC 51 doubleword64 .TOC. */
988 HOWTO (R_PPC64_TOC
, /* type */
990 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
992 FALSE
, /* pc_relative */
994 complain_overflow_bitfield
, /* complain_on_overflow */
995 ppc64_elf_toc64_reloc
, /* special_function */
996 "R_PPC64_TOC", /* name */
997 FALSE
, /* partial_inplace */
999 ONES (64), /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* Like R_PPC64_GOT16, but also informs the link editor that the
1003 value to relocate may (!) refer to a PLT entry which the link
1004 editor (a) may replace with the symbol value. If the link editor
1005 is unable to fully resolve the symbol, it may (b) create a PLT
1006 entry and store the address to the new PLT entry in the GOT.
1007 This permits lazy resolution of function symbols at run time.
1008 The link editor may also skip all of this and just (c) emit a
1009 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1010 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1011 HOWTO (R_PPC64_PLTGOT16
, /* type */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE
, /* pc_relative */
1017 complain_overflow_signed
, /* complain_on_overflow */
1018 ppc64_elf_unhandled_reloc
, /* special_function */
1019 "R_PPC64_PLTGOT16", /* name */
1020 FALSE
, /* partial_inplace */
1022 0xffff, /* dst_mask */
1023 FALSE
), /* pcrel_offset */
1025 /* Like R_PPC64_PLTGOT16, but without overflow. */
1026 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1027 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE
, /* pc_relative */
1033 complain_overflow_dont
, /* complain_on_overflow */
1034 ppc64_elf_unhandled_reloc
, /* special_function */
1035 "R_PPC64_PLTGOT16_LO", /* name */
1036 FALSE
, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE
), /* pcrel_offset */
1041 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1042 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE
, /* pc_relative */
1049 complain_overflow_dont
, /* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc
, /* special_function */
1051 "R_PPC64_PLTGOT16_HI", /* name */
1052 FALSE
, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE
), /* pcrel_offset */
1057 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1058 1 if the contents of the low 16 bits, treated as a signed number,
1060 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1061 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1062 16, /* rightshift */
1063 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE
, /* pc_relative */
1067 complain_overflow_dont
,/* complain_on_overflow */
1068 ppc64_elf_unhandled_reloc
, /* special_function */
1069 "R_PPC64_PLTGOT16_HA", /* name */
1070 FALSE
, /* partial_inplace */
1072 0xffff, /* dst_mask */
1073 FALSE
), /* pcrel_offset */
1075 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1076 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1078 1, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE
, /* pc_relative */
1082 complain_overflow_bitfield
, /* complain_on_overflow */
1083 bfd_elf_generic_reloc
, /* special_function */
1084 "R_PPC64_ADDR16_DS", /* name */
1085 FALSE
, /* partial_inplace */
1087 0xfffc, /* dst_mask */
1088 FALSE
), /* pcrel_offset */
1090 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1091 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1093 1, /* size (0 = byte, 1 = short, 2 = long) */
1095 FALSE
, /* pc_relative */
1097 complain_overflow_dont
,/* complain_on_overflow */
1098 bfd_elf_generic_reloc
, /* special_function */
1099 "R_PPC64_ADDR16_LO_DS",/* name */
1100 FALSE
, /* partial_inplace */
1102 0xfffc, /* dst_mask */
1103 FALSE
), /* pcrel_offset */
1105 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1106 HOWTO (R_PPC64_GOT16_DS
, /* type */
1108 1, /* size (0 = byte, 1 = short, 2 = long) */
1110 FALSE
, /* pc_relative */
1112 complain_overflow_signed
, /* complain_on_overflow */
1113 ppc64_elf_unhandled_reloc
, /* special_function */
1114 "R_PPC64_GOT16_DS", /* name */
1115 FALSE
, /* partial_inplace */
1117 0xfffc, /* dst_mask */
1118 FALSE
), /* pcrel_offset */
1120 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1121 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_dont
, /* complain_on_overflow */
1128 ppc64_elf_unhandled_reloc
, /* special_function */
1129 "R_PPC64_GOT16_LO_DS", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xfffc, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1135 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1136 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE
, /* pc_relative */
1142 complain_overflow_dont
, /* complain_on_overflow */
1143 ppc64_elf_unhandled_reloc
, /* special_function */
1144 "R_PPC64_PLT16_LO_DS", /* name */
1145 FALSE
, /* partial_inplace */
1147 0xfffc, /* dst_mask */
1148 FALSE
), /* pcrel_offset */
1150 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1151 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE
, /* pc_relative */
1157 complain_overflow_bitfield
, /* complain_on_overflow */
1158 ppc64_elf_sectoff_reloc
, /* special_function */
1159 "R_PPC64_SECTOFF_DS", /* name */
1160 FALSE
, /* partial_inplace */
1162 0xfffc, /* dst_mask */
1163 FALSE
), /* pcrel_offset */
1165 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1166 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE
, /* pc_relative */
1172 complain_overflow_dont
, /* complain_on_overflow */
1173 ppc64_elf_sectoff_reloc
, /* special_function */
1174 "R_PPC64_SECTOFF_LO_DS",/* name */
1175 FALSE
, /* partial_inplace */
1177 0xfffc, /* dst_mask */
1178 FALSE
), /* pcrel_offset */
1180 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1181 HOWTO (R_PPC64_TOC16_DS
, /* type */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 FALSE
, /* pc_relative */
1187 complain_overflow_signed
, /* complain_on_overflow */
1188 ppc64_elf_toc_reloc
, /* special_function */
1189 "R_PPC64_TOC16_DS", /* name */
1190 FALSE
, /* partial_inplace */
1192 0xfffc, /* dst_mask */
1193 FALSE
), /* pcrel_offset */
1195 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1196 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1198 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 FALSE
, /* pc_relative */
1202 complain_overflow_dont
, /* complain_on_overflow */
1203 ppc64_elf_toc_reloc
, /* special_function */
1204 "R_PPC64_TOC16_LO_DS", /* name */
1205 FALSE
, /* partial_inplace */
1207 0xfffc, /* dst_mask */
1208 FALSE
), /* pcrel_offset */
1210 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1211 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1212 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_signed
, /* complain_on_overflow */
1219 ppc64_elf_unhandled_reloc
, /* special_function */
1220 "R_PPC64_PLTGOT16_DS", /* name */
1221 FALSE
, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1227 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1228 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE
, /* pc_relative */
1234 complain_overflow_dont
, /* complain_on_overflow */
1235 ppc64_elf_unhandled_reloc
, /* special_function */
1236 "R_PPC64_PLTGOT16_LO_DS",/* name */
1237 FALSE
, /* partial_inplace */
1239 0xfffc, /* dst_mask */
1240 FALSE
), /* pcrel_offset */
1242 /* Marker relocs for TLS. */
1245 2, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE
, /* pc_relative */
1249 complain_overflow_dont
, /* complain_on_overflow */
1250 bfd_elf_generic_reloc
, /* special_function */
1251 "R_PPC64_TLS", /* name */
1252 FALSE
, /* partial_inplace */
1255 FALSE
), /* pcrel_offset */
1257 HOWTO (R_PPC64_TLSGD
,
1259 2, /* size (0 = byte, 1 = short, 2 = long) */
1261 FALSE
, /* pc_relative */
1263 complain_overflow_dont
, /* complain_on_overflow */
1264 bfd_elf_generic_reloc
, /* special_function */
1265 "R_PPC64_TLSGD", /* name */
1266 FALSE
, /* partial_inplace */
1269 FALSE
), /* pcrel_offset */
1271 HOWTO (R_PPC64_TLSLD
,
1273 2, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE
, /* pc_relative */
1277 complain_overflow_dont
, /* complain_on_overflow */
1278 bfd_elf_generic_reloc
, /* special_function */
1279 "R_PPC64_TLSLD", /* name */
1280 FALSE
, /* partial_inplace */
1283 FALSE
), /* pcrel_offset */
1285 HOWTO (R_PPC64_TOCSAVE
,
1287 2, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE
, /* pc_relative */
1291 complain_overflow_dont
, /* complain_on_overflow */
1292 bfd_elf_generic_reloc
, /* special_function */
1293 "R_PPC64_TOCSAVE", /* name */
1294 FALSE
, /* partial_inplace */
1297 FALSE
), /* pcrel_offset */
1299 /* Computes the load module index of the load module that contains the
1300 definition of its TLS sym. */
1301 HOWTO (R_PPC64_DTPMOD64
,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE
, /* pc_relative */
1307 complain_overflow_dont
, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc
, /* special_function */
1309 "R_PPC64_DTPMOD64", /* name */
1310 FALSE
, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE
), /* pcrel_offset */
1315 /* Computes a dtv-relative displacement, the difference between the value
1316 of sym+add and the base address of the thread-local storage block that
1317 contains the definition of sym, minus 0x8000. */
1318 HOWTO (R_PPC64_DTPREL64
,
1320 4, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_dont
, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc
, /* special_function */
1326 "R_PPC64_DTPREL64", /* name */
1327 FALSE
, /* partial_inplace */
1329 ONES (64), /* dst_mask */
1330 FALSE
), /* pcrel_offset */
1332 /* A 16 bit dtprel reloc. */
1333 HOWTO (R_PPC64_DTPREL16
,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE
, /* pc_relative */
1339 complain_overflow_signed
, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc
, /* special_function */
1341 "R_PPC64_DTPREL16", /* name */
1342 FALSE
, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE
), /* pcrel_offset */
1347 /* Like DTPREL16, but no overflow. */
1348 HOWTO (R_PPC64_DTPREL16_LO
,
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE
, /* pc_relative */
1354 complain_overflow_dont
, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc
, /* special_function */
1356 "R_PPC64_DTPREL16_LO", /* name */
1357 FALSE
, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HI
,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_dont
, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc
, /* special_function */
1371 "R_PPC64_DTPREL16_HI", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HA
,
1379 16, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE
, /* pc_relative */
1384 complain_overflow_dont
, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc
, /* special_function */
1386 "R_PPC64_DTPREL16_HA", /* name */
1387 FALSE
, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE
), /* pcrel_offset */
1392 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_dont
, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHER", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1409 32, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE
, /* pc_relative */
1414 complain_overflow_dont
, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc
, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHERA", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE
), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 FALSE
, /* pc_relative */
1429 complain_overflow_dont
, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc
, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHEST", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE
), /* pcrel_offset */
1437 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1438 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1439 48, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE
, /* pc_relative */
1444 complain_overflow_dont
, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc
, /* special_function */
1446 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1447 FALSE
, /* partial_inplace */
1449 0xffff, /* dst_mask */
1450 FALSE
), /* pcrel_offset */
1452 /* Like DTPREL16, but for insns with a DS field. */
1453 HOWTO (R_PPC64_DTPREL16_DS
,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_signed
, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC64_DTPREL16_DS", /* name */
1462 FALSE
, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* Like DTPREL16_DS, but no overflow. */
1468 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1470 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE
, /* pc_relative */
1474 complain_overflow_dont
, /* complain_on_overflow */
1475 ppc64_elf_unhandled_reloc
, /* special_function */
1476 "R_PPC64_DTPREL16_LO_DS", /* name */
1477 FALSE
, /* partial_inplace */
1479 0xfffc, /* dst_mask */
1480 FALSE
), /* pcrel_offset */
1482 /* Computes a tp-relative displacement, the difference between the value of
1483 sym+add and the value of the thread pointer (r13). */
1484 HOWTO (R_PPC64_TPREL64
,
1486 4, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_dont
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_TPREL64", /* name */
1493 FALSE
, /* partial_inplace */
1495 ONES (64), /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* A 16 bit tprel reloc. */
1499 HOWTO (R_PPC64_TPREL16
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_signed
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_TPREL16", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like TPREL16, but no overflow. */
1514 HOWTO (R_PPC64_TPREL16_LO
,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_TPREL16_LO", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Like TPREL16_LO, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HI
,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE
, /* pc_relative */
1535 complain_overflow_dont
, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc
, /* special_function */
1537 "R_PPC64_TPREL16_HI", /* name */
1538 FALSE
, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE
), /* pcrel_offset */
1543 /* Like TPREL16_HI, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HA
,
1545 16, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE
, /* pc_relative */
1550 complain_overflow_dont
, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc
, /* special_function */
1552 "R_PPC64_TPREL16_HA", /* name */
1553 FALSE
, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE
), /* pcrel_offset */
1558 /* Like TPREL16_HI, but next higher group of 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHER
,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_dont
, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc
, /* special_function */
1567 "R_PPC64_TPREL16_HIGHER", /* name */
1568 FALSE
, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1575 32, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_dont
, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc
, /* special_function */
1582 "R_PPC64_TPREL16_HIGHERA", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE
, /* pc_relative */
1595 complain_overflow_dont
, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc
, /* special_function */
1597 "R_PPC64_TPREL16_HIGHEST", /* name */
1598 FALSE
, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1604 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1605 48, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_dont
, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc
, /* special_function */
1612 "R_PPC64_TPREL16_HIGHESTA", /* name */
1613 FALSE
, /* partial_inplace */
1615 0xffff, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 /* Like TPREL16, but for insns with a DS field. */
1619 HOWTO (R_PPC64_TPREL16_DS
,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE
, /* pc_relative */
1625 complain_overflow_signed
, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc
, /* special_function */
1627 "R_PPC64_TPREL16_DS", /* name */
1628 FALSE
, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE
), /* pcrel_offset */
1633 /* Like TPREL16_DS, but no overflow. */
1634 HOWTO (R_PPC64_TPREL16_LO_DS
,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE
, /* pc_relative */
1640 complain_overflow_dont
, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc
, /* special_function */
1642 "R_PPC64_TPREL16_LO_DS", /* name */
1643 FALSE
, /* partial_inplace */
1645 0xfffc, /* dst_mask */
1646 FALSE
), /* pcrel_offset */
1648 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1649 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1650 to the first entry relative to the TOC base (r2). */
1651 HOWTO (R_PPC64_GOT_TLSGD16
,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_signed
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_GOT_TLSGD16", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like GOT_TLSGD16, but no overflow. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE
, /* pc_relative */
1672 complain_overflow_dont
, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc
, /* special_function */
1674 "R_PPC64_GOT_TLSGD16_LO", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC64_GOT_TLSGD16_HI", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1696 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1697 16, /* rightshift */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE
, /* pc_relative */
1702 complain_overflow_dont
, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc
, /* special_function */
1704 "R_PPC64_GOT_TLSGD16_HA", /* name */
1705 FALSE
, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE
), /* pcrel_offset */
1710 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1711 with values (sym+add)@dtpmod and zero, and computes the offset to the
1712 first entry relative to the TOC base (r2). */
1713 HOWTO (R_PPC64_GOT_TLSLD16
,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE
, /* pc_relative */
1719 complain_overflow_signed
, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc
, /* special_function */
1721 "R_PPC64_GOT_TLSLD16", /* name */
1722 FALSE
, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE
), /* pcrel_offset */
1727 /* Like GOT_TLSLD16, but no overflow. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE
, /* pc_relative */
1734 complain_overflow_dont
, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc
, /* special_function */
1736 "R_PPC64_GOT_TLSLD16_LO", /* name */
1737 FALSE
, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE
, /* pc_relative */
1749 complain_overflow_dont
, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc
, /* special_function */
1751 "R_PPC64_GOT_TLSLD16_HI", /* name */
1752 FALSE
, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE
), /* pcrel_offset */
1757 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1758 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1759 16, /* rightshift */
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 FALSE
, /* pc_relative */
1764 complain_overflow_dont
, /* complain_on_overflow */
1765 ppc64_elf_unhandled_reloc
, /* special_function */
1766 "R_PPC64_GOT_TLSLD16_HA", /* name */
1767 FALSE
, /* partial_inplace */
1769 0xffff, /* dst_mask */
1770 FALSE
), /* pcrel_offset */
1772 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1773 the offset to the entry relative to the TOC base (r2). */
1774 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_signed
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_DS", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_DS, but no overflow. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE
, /* pc_relative */
1795 complain_overflow_dont
, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc
, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xfffc, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_dont
, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc
, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HI", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1819 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1820 16, /* rightshift */
1821 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 FALSE
, /* pc_relative */
1825 complain_overflow_dont
, /* complain_on_overflow */
1826 ppc64_elf_unhandled_reloc
, /* special_function */
1827 "R_PPC64_GOT_DTPREL16_HA", /* name */
1828 FALSE
, /* partial_inplace */
1830 0xffff, /* dst_mask */
1831 FALSE
), /* pcrel_offset */
1833 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1834 offset to the entry relative to the TOC base (r2). */
1835 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_signed
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_TPREL16_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_TPREL16_DS, but no overflow. */
1850 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_dont
, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc
, /* special_function */
1858 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xfffc, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE
, /* pc_relative */
1871 complain_overflow_dont
, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc
, /* special_function */
1873 "R_PPC64_GOT_TPREL16_HI", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1880 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1881 16, /* rightshift */
1882 1, /* size (0 = byte, 1 = short, 2 = long) */
1884 FALSE
, /* pc_relative */
1886 complain_overflow_dont
, /* complain_on_overflow */
1887 ppc64_elf_unhandled_reloc
, /* special_function */
1888 "R_PPC64_GOT_TPREL16_HA", /* name */
1889 FALSE
, /* partial_inplace */
1891 0xffff, /* dst_mask */
1892 FALSE
), /* pcrel_offset */
1894 HOWTO (R_PPC64_JMP_IREL
, /* type */
1896 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1898 FALSE
, /* pc_relative */
1900 complain_overflow_dont
, /* complain_on_overflow */
1901 ppc64_elf_unhandled_reloc
, /* special_function */
1902 "R_PPC64_JMP_IREL", /* name */
1903 FALSE
, /* partial_inplace */
1906 FALSE
), /* pcrel_offset */
1908 HOWTO (R_PPC64_IRELATIVE
, /* type */
1910 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1912 FALSE
, /* pc_relative */
1914 complain_overflow_dont
, /* complain_on_overflow */
1915 bfd_elf_generic_reloc
, /* special_function */
1916 "R_PPC64_IRELATIVE", /* name */
1917 FALSE
, /* partial_inplace */
1919 ONES (64), /* dst_mask */
1920 FALSE
), /* pcrel_offset */
1922 /* A 16 bit relative relocation. */
1923 HOWTO (R_PPC64_REL16
, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE
, /* pc_relative */
1929 complain_overflow_bitfield
, /* complain_on_overflow */
1930 bfd_elf_generic_reloc
, /* special_function */
1931 "R_PPC64_REL16", /* name */
1932 FALSE
, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE
), /* pcrel_offset */
1937 /* A 16 bit relative relocation without overflow. */
1938 HOWTO (R_PPC64_REL16_LO
, /* type */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1942 TRUE
, /* pc_relative */
1944 complain_overflow_dont
,/* complain_on_overflow */
1945 bfd_elf_generic_reloc
, /* special_function */
1946 "R_PPC64_REL16_LO", /* name */
1947 FALSE
, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE
), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address. */
1953 HOWTO (R_PPC64_REL16_HI
, /* type */
1954 16, /* rightshift */
1955 1, /* size (0 = byte, 1 = short, 2 = long) */
1957 TRUE
, /* pc_relative */
1959 complain_overflow_dont
, /* complain_on_overflow */
1960 bfd_elf_generic_reloc
, /* special_function */
1961 "R_PPC64_REL16_HI", /* name */
1962 FALSE
, /* partial_inplace */
1964 0xffff, /* dst_mask */
1965 TRUE
), /* pcrel_offset */
1967 /* The high order 16 bits of a relative address, plus 1 if the contents of
1968 the low 16 bits, treated as a signed number, is negative. */
1969 HOWTO (R_PPC64_REL16_HA
, /* type */
1970 16, /* rightshift */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE
, /* pc_relative */
1975 complain_overflow_dont
, /* complain_on_overflow */
1976 ppc64_elf_ha_reloc
, /* special_function */
1977 "R_PPC64_REL16_HA", /* name */
1978 FALSE
, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE
), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable hierarchy. */
1984 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1988 FALSE
, /* pc_relative */
1990 complain_overflow_dont
, /* complain_on_overflow */
1991 NULL
, /* special_function */
1992 "R_PPC64_GNU_VTINHERIT", /* name */
1993 FALSE
, /* partial_inplace */
1996 FALSE
), /* pcrel_offset */
1998 /* GNU extension to record C++ vtable member usage. */
1999 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2001 0, /* size (0 = byte, 1 = short, 2 = long) */
2003 FALSE
, /* pc_relative */
2005 complain_overflow_dont
, /* complain_on_overflow */
2006 NULL
, /* special_function */
2007 "R_PPC64_GNU_VTENTRY", /* name */
2008 FALSE
, /* partial_inplace */
2011 FALSE
), /* pcrel_offset */
2015 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2019 ppc_howto_init (void)
2021 unsigned int i
, type
;
2024 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2027 type
= ppc64_elf_howto_raw
[i
].type
;
2028 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2029 / sizeof (ppc64_elf_howto_table
[0])));
2030 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2034 static reloc_howto_type
*
2035 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2036 bfd_reloc_code_real_type code
)
2038 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2040 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2041 /* Initialize howto table if needed. */
2049 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2051 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2053 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2055 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2057 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2059 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2061 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2063 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2065 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2067 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2069 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2071 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2073 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2075 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2077 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2079 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2081 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2083 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2085 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2087 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2089 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2091 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2093 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2095 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2097 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2099 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2101 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2103 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2105 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2107 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2109 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2111 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2113 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2115 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2117 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2119 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2121 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2123 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2125 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2127 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2129 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2131 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2133 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2135 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2137 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2139 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2141 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2143 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2145 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2147 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2149 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2151 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2153 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2155 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2157 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2159 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2161 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2163 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2165 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2167 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2169 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2171 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2173 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2175 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2177 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2179 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2181 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2183 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2185 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2187 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2189 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2191 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2193 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2195 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2197 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2199 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2201 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2203 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2205 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2207 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2209 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2211 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2213 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2215 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2217 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2219 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2221 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2223 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2225 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2227 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2229 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2231 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2233 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2235 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2237 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2239 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2241 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2243 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2245 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2247 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2249 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2251 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2253 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2255 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2257 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2259 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2261 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2265 return ppc64_elf_howto_table
[r
];
2268 static reloc_howto_type
*
2269 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2275 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2277 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2278 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2279 return &ppc64_elf_howto_raw
[i
];
2284 /* Set the howto pointer for a PowerPC ELF reloc. */
2287 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2288 Elf_Internal_Rela
*dst
)
2292 /* Initialize howto table if needed. */
2293 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2296 type
= ELF64_R_TYPE (dst
->r_info
);
2297 if (type
>= (sizeof (ppc64_elf_howto_table
)
2298 / sizeof (ppc64_elf_howto_table
[0])))
2300 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2302 type
= R_PPC64_NONE
;
2304 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2307 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2309 static bfd_reloc_status_type
2310 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2311 void *data
, asection
*input_section
,
2312 bfd
*output_bfd
, char **error_message
)
2314 /* If this is a relocatable link (output_bfd test tells us), just
2315 call the generic function. Any adjustment will be done at final
2317 if (output_bfd
!= NULL
)
2318 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2319 input_section
, output_bfd
, error_message
);
2321 /* Adjust the addend for sign extension of the low 16 bits.
2322 We won't actually be using the low 16 bits, so trashing them
2324 reloc_entry
->addend
+= 0x8000;
2325 return bfd_reloc_continue
;
2328 static bfd_reloc_status_type
2329 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2330 void *data
, asection
*input_section
,
2331 bfd
*output_bfd
, char **error_message
)
2333 if (output_bfd
!= NULL
)
2334 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2335 input_section
, output_bfd
, error_message
);
2337 if (strcmp (symbol
->section
->name
, ".opd") == 0
2338 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2340 bfd_vma dest
= opd_entry_value (symbol
->section
,
2341 symbol
->value
+ reloc_entry
->addend
,
2343 if (dest
!= (bfd_vma
) -1)
2344 reloc_entry
->addend
= dest
- (symbol
->value
2345 + symbol
->section
->output_section
->vma
2346 + symbol
->section
->output_offset
);
2348 return bfd_reloc_continue
;
2351 static bfd_reloc_status_type
2352 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2353 void *data
, asection
*input_section
,
2354 bfd
*output_bfd
, char **error_message
)
2357 enum elf_ppc64_reloc_type r_type
;
2358 bfd_size_type octets
;
2359 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2360 bfd_boolean is_power4
= FALSE
;
2362 /* If this is a relocatable link (output_bfd test tells us), just
2363 call the generic function. Any adjustment will be done at final
2365 if (output_bfd
!= NULL
)
2366 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2367 input_section
, output_bfd
, error_message
);
2369 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2370 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2371 insn
&= ~(0x01 << 21);
2372 r_type
= reloc_entry
->howto
->type
;
2373 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2374 || r_type
== R_PPC64_REL14_BRTAKEN
)
2375 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2379 /* Set 'a' bit. This is 0b00010 in BO field for branch
2380 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2381 for branch on CTR insns (BO == 1a00t or 1a01t). */
2382 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2384 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2394 if (!bfd_is_com_section (symbol
->section
))
2395 target
= symbol
->value
;
2396 target
+= symbol
->section
->output_section
->vma
;
2397 target
+= symbol
->section
->output_offset
;
2398 target
+= reloc_entry
->addend
;
2400 from
= (reloc_entry
->address
2401 + input_section
->output_offset
2402 + input_section
->output_section
->vma
);
2404 /* Invert 'y' bit if not the default. */
2405 if ((bfd_signed_vma
) (target
- from
) < 0)
2408 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2410 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2411 input_section
, output_bfd
, error_message
);
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2416 void *data
, asection
*input_section
,
2417 bfd
*output_bfd
, char **error_message
)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd
!= NULL
)
2423 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2424 input_section
, output_bfd
, error_message
);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2428 return bfd_reloc_continue
;
2431 static bfd_reloc_status_type
2432 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2433 void *data
, asection
*input_section
,
2434 bfd
*output_bfd
, char **error_message
)
2436 /* If this is a relocatable link (output_bfd test tells us), just
2437 call the generic function. Any adjustment will be done at final
2439 if (output_bfd
!= NULL
)
2440 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2441 input_section
, output_bfd
, error_message
);
2443 /* Subtract the symbol section base address. */
2444 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2446 /* Adjust the addend for sign extension of the low 16 bits. */
2447 reloc_entry
->addend
+= 0x8000;
2448 return bfd_reloc_continue
;
2451 static bfd_reloc_status_type
2452 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2453 void *data
, asection
*input_section
,
2454 bfd
*output_bfd
, char **error_message
)
2458 /* If this is a relocatable link (output_bfd test tells us), just
2459 call the generic function. Any adjustment will be done at final
2461 if (output_bfd
!= NULL
)
2462 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2463 input_section
, output_bfd
, error_message
);
2465 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2467 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2469 /* Subtract the TOC base address. */
2470 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2471 return bfd_reloc_continue
;
2474 static bfd_reloc_status_type
2475 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2476 void *data
, asection
*input_section
,
2477 bfd
*output_bfd
, char **error_message
)
2481 /* If this is a relocatable link (output_bfd test tells us), just
2482 call the generic function. Any adjustment will be done at final
2484 if (output_bfd
!= NULL
)
2485 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2486 input_section
, output_bfd
, error_message
);
2488 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2490 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2492 /* Subtract the TOC base address. */
2493 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2495 /* Adjust the addend for sign extension of the low 16 bits. */
2496 reloc_entry
->addend
+= 0x8000;
2497 return bfd_reloc_continue
;
2500 static bfd_reloc_status_type
2501 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2502 void *data
, asection
*input_section
,
2503 bfd
*output_bfd
, char **error_message
)
2506 bfd_size_type octets
;
2508 /* If this is a relocatable link (output_bfd test tells us), just
2509 call the generic function. Any adjustment will be done at final
2511 if (output_bfd
!= NULL
)
2512 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2513 input_section
, output_bfd
, error_message
);
2515 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2517 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2519 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2520 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2521 return bfd_reloc_ok
;
2524 static bfd_reloc_status_type
2525 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2526 void *data
, asection
*input_section
,
2527 bfd
*output_bfd
, char **error_message
)
2529 /* If this is a relocatable link (output_bfd test tells us), just
2530 call the generic function. Any adjustment will be done at final
2532 if (output_bfd
!= NULL
)
2533 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2534 input_section
, output_bfd
, error_message
);
2536 if (error_message
!= NULL
)
2538 static char buf
[60];
2539 sprintf (buf
, "generic linker can't handle %s",
2540 reloc_entry
->howto
->name
);
2541 *error_message
= buf
;
2543 return bfd_reloc_dangerous
;
2546 /* Track GOT entries needed for a given symbol. We might need more
2547 than one got entry per symbol. */
2550 struct got_entry
*next
;
2552 /* The symbol addend that we'll be placing in the GOT. */
2555 /* Unlike other ELF targets, we use separate GOT entries for the same
2556 symbol referenced from different input files. This is to support
2557 automatic multiple TOC/GOT sections, where the TOC base can vary
2558 from one input file to another. After partitioning into TOC groups
2559 we merge entries within the group.
2561 Point to the BFD owning this GOT entry. */
2564 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2565 TLS_TPREL or TLS_DTPREL for tls entries. */
2566 unsigned char tls_type
;
2568 /* Non-zero if got.ent points to real entry. */
2569 unsigned char is_indirect
;
2571 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2574 bfd_signed_vma refcount
;
2576 struct got_entry
*ent
;
2580 /* The same for PLT. */
2583 struct plt_entry
*next
;
2589 bfd_signed_vma refcount
;
2594 struct ppc64_elf_obj_tdata
2596 struct elf_obj_tdata elf
;
2598 /* Shortcuts to dynamic linker sections. */
2602 /* Used during garbage collection. We attach global symbols defined
2603 on removed .opd entries to this section so that the sym is removed. */
2604 asection
*deleted_section
;
2606 /* TLS local dynamic got entry handling. Support for multiple GOT
2607 sections means we potentially need one of these for each input bfd. */
2608 struct got_entry tlsld_got
;
2610 /* A copy of relocs before they are modified for --emit-relocs. */
2611 Elf_Internal_Rela
*opd_relocs
;
2613 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2614 the reloc to be in the range -32768 to 32767. */
2615 unsigned int has_small_toc_reloc
: 1;
2617 /* Set if toc/got ha relocs detected not using r2. */
2618 unsigned int ha_relocs_not_using_r2
: 1;
2621 #define ppc64_elf_tdata(bfd) \
2622 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2624 #define ppc64_tlsld_got(bfd) \
2625 (&ppc64_elf_tdata (bfd)->tlsld_got)
2627 #define is_ppc64_elf(bfd) \
2628 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2629 && elf_object_id (bfd) == PPC64_ELF_DATA)
2631 /* Override the generic function because we store some extras. */
2634 ppc64_elf_mkobject (bfd
*abfd
)
2636 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2640 /* Fix bad default arch selected for a 64 bit input bfd when the
2641 default is 32 bit. */
2644 ppc64_elf_object_p (bfd
*abfd
)
2646 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2648 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2650 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2652 /* Relies on arch after 32 bit default being 64 bit default. */
2653 abfd
->arch_info
= abfd
->arch_info
->next
;
2654 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2660 /* Support for core dump NOTE sections. */
2663 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2665 size_t offset
, size
;
2667 if (note
->descsz
!= 504)
2671 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2674 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2680 /* Make a ".reg/999" section. */
2681 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2682 size
, note
->descpos
+ offset
);
2686 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2688 if (note
->descsz
!= 136)
2691 elf_tdata (abfd
)->core_pid
2692 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2693 elf_tdata (abfd
)->core_program
2694 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2695 elf_tdata (abfd
)->core_command
2696 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2702 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2715 va_start (ap
, note_type
);
2716 memset (data
, 0, 40);
2717 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2718 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2720 return elfcore_write_note (abfd
, buf
, bufsiz
,
2721 "CORE", note_type
, data
, sizeof (data
));
2732 va_start (ap
, note_type
);
2733 memset (data
, 0, 112);
2734 pid
= va_arg (ap
, long);
2735 bfd_put_32 (abfd
, pid
, data
+ 32);
2736 cursig
= va_arg (ap
, int);
2737 bfd_put_16 (abfd
, cursig
, data
+ 12);
2738 greg
= va_arg (ap
, const void *);
2739 memcpy (data
+ 112, greg
, 384);
2740 memset (data
+ 496, 0, 8);
2742 return elfcore_write_note (abfd
, buf
, bufsiz
,
2743 "CORE", note_type
, data
, sizeof (data
));
2748 /* Add extra PPC sections. */
2750 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2752 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2753 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2754 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2755 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2756 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2757 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2758 { NULL
, 0, 0, 0, 0 }
2761 enum _ppc64_sec_type
{
2767 struct _ppc64_elf_section_data
2769 struct bfd_elf_section_data elf
;
2773 /* An array with one entry for each opd function descriptor. */
2774 struct _opd_sec_data
2776 /* Points to the function code section for local opd entries. */
2777 asection
**func_sec
;
2779 /* After editing .opd, adjust references to opd local syms. */
2783 /* An array for toc sections, indexed by offset/8. */
2784 struct _toc_sec_data
2786 /* Specifies the relocation symbol index used at a given toc offset. */
2789 /* And the relocation addend. */
2794 enum _ppc64_sec_type sec_type
:2;
2796 /* Flag set when small branches are detected. Used to
2797 select suitable defaults for the stub group size. */
2798 unsigned int has_14bit_branch
:1;
2801 #define ppc64_elf_section_data(sec) \
2802 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2805 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2807 if (!sec
->used_by_bfd
)
2809 struct _ppc64_elf_section_data
*sdata
;
2810 bfd_size_type amt
= sizeof (*sdata
);
2812 sdata
= bfd_zalloc (abfd
, amt
);
2815 sec
->used_by_bfd
= sdata
;
2818 return _bfd_elf_new_section_hook (abfd
, sec
);
2821 static struct _opd_sec_data
*
2822 get_opd_info (asection
* sec
)
2825 && ppc64_elf_section_data (sec
) != NULL
2826 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2827 return &ppc64_elf_section_data (sec
)->u
.opd
;
2831 /* Parameters for the qsort hook. */
2832 static bfd_boolean synthetic_relocatable
;
2834 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2837 compare_symbols (const void *ap
, const void *bp
)
2839 const asymbol
*a
= * (const asymbol
**) ap
;
2840 const asymbol
*b
= * (const asymbol
**) bp
;
2842 /* Section symbols first. */
2843 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2845 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2848 /* then .opd symbols. */
2849 if (strcmp (a
->section
->name
, ".opd") == 0
2850 && strcmp (b
->section
->name
, ".opd") != 0)
2852 if (strcmp (a
->section
->name
, ".opd") != 0
2853 && strcmp (b
->section
->name
, ".opd") == 0)
2856 /* then other code symbols. */
2857 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2858 == (SEC_CODE
| SEC_ALLOC
)
2859 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2860 != (SEC_CODE
| SEC_ALLOC
))
2863 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2864 != (SEC_CODE
| SEC_ALLOC
)
2865 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2866 == (SEC_CODE
| SEC_ALLOC
))
2869 if (synthetic_relocatable
)
2871 if (a
->section
->id
< b
->section
->id
)
2874 if (a
->section
->id
> b
->section
->id
)
2878 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2881 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2884 /* For syms with the same value, prefer strong dynamic global function
2885 syms over other syms. */
2886 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2889 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2892 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2895 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2898 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2901 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2904 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2907 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2913 /* Search SYMS for a symbol of the given VALUE. */
2916 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2924 mid
= (lo
+ hi
) >> 1;
2925 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2927 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2937 mid
= (lo
+ hi
) >> 1;
2938 if (syms
[mid
]->section
->id
< id
)
2940 else if (syms
[mid
]->section
->id
> id
)
2942 else if (syms
[mid
]->value
< value
)
2944 else if (syms
[mid
]->value
> value
)
2954 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2956 bfd_vma vma
= *(bfd_vma
*) ptr
;
2957 return ((section
->flags
& SEC_ALLOC
) != 0
2958 && section
->vma
<= vma
2959 && vma
< section
->vma
+ section
->size
);
2962 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2963 entry syms. Also generate @plt symbols for the glink branch table. */
2966 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2967 long static_count
, asymbol
**static_syms
,
2968 long dyn_count
, asymbol
**dyn_syms
,
2975 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2977 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2982 opd
= bfd_get_section_by_name (abfd
, ".opd");
2986 symcount
= static_count
;
2988 symcount
+= dyn_count
;
2992 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2996 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2998 /* Use both symbol tables. */
2999 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3000 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3002 else if (!relocatable
&& static_count
== 0)
3003 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3005 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3007 synthetic_relocatable
= relocatable
;
3008 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3010 if (!relocatable
&& symcount
> 1)
3013 /* Trim duplicate syms, since we may have merged the normal and
3014 dynamic symbols. Actually, we only care about syms that have
3015 different values, so trim any with the same value. */
3016 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3017 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3018 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3019 syms
[j
++] = syms
[i
];
3024 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3028 for (; i
< symcount
; ++i
)
3029 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3030 != (SEC_CODE
| SEC_ALLOC
))
3031 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3035 for (; i
< symcount
; ++i
)
3036 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3040 for (; i
< symcount
; ++i
)
3041 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3045 for (; i
< symcount
; ++i
)
3046 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3047 != (SEC_CODE
| SEC_ALLOC
))
3055 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3060 if (opdsymend
== secsymend
)
3063 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3064 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3068 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3075 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3079 while (r
< opd
->relocation
+ relcount
3080 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3083 if (r
== opd
->relocation
+ relcount
)
3086 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3089 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3092 sym
= *r
->sym_ptr_ptr
;
3093 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3094 sym
->section
->id
, sym
->value
+ r
->addend
))
3097 size
+= sizeof (asymbol
);
3098 size
+= strlen (syms
[i
]->name
) + 2;
3102 s
= *ret
= bfd_malloc (size
);
3109 names
= (char *) (s
+ count
);
3111 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3115 while (r
< opd
->relocation
+ relcount
3116 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3119 if (r
== opd
->relocation
+ relcount
)
3122 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3125 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3128 sym
= *r
->sym_ptr_ptr
;
3129 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3130 sym
->section
->id
, sym
->value
+ r
->addend
))
3135 s
->flags
|= BSF_SYNTHETIC
;
3136 s
->section
= sym
->section
;
3137 s
->value
= sym
->value
+ r
->addend
;
3140 len
= strlen (syms
[i
]->name
);
3141 memcpy (names
, syms
[i
]->name
, len
+ 1);
3143 /* Have udata.p point back to the original symbol this
3144 synthetic symbol was derived from. */
3145 s
->udata
.p
= syms
[i
];
3152 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3156 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3157 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3160 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3164 free_contents_and_exit
:
3172 for (i
= secsymend
; i
< opdsymend
; ++i
)
3176 /* Ignore bogus symbols. */
3177 if (syms
[i
]->value
> opd
->size
- 8)
3180 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3181 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3184 size
+= sizeof (asymbol
);
3185 size
+= strlen (syms
[i
]->name
) + 2;
3189 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3191 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3193 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3195 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3197 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3198 goto free_contents_and_exit
;
3200 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3201 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3204 extdynend
= extdyn
+ dynamic
->size
;
3205 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3207 Elf_Internal_Dyn dyn
;
3208 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3210 if (dyn
.d_tag
== DT_NULL
)
3213 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3215 /* The first glink stub starts at offset 32; see comment in
3216 ppc64_elf_finish_dynamic_sections. */
3217 glink_vma
= dyn
.d_un
.d_val
+ 32;
3218 /* The .glink section usually does not survive the final
3219 link; search for the section (usually .text) where the
3220 glink stubs now reside. */
3221 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3232 /* Determine __glink trampoline by reading the relative branch
3233 from the first glink stub. */
3235 if (bfd_get_section_contents (abfd
, glink
, buf
,
3236 glink_vma
+ 4 - glink
->vma
, 4))
3238 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3240 if ((insn
& ~0x3fffffc) == 0)
3241 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3245 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3247 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3250 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3251 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3252 goto free_contents_and_exit
;
3254 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3255 size
+= plt_count
* sizeof (asymbol
);
3257 p
= relplt
->relocation
;
3258 for (i
= 0; i
< plt_count
; i
++, p
++)
3260 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3262 size
+= sizeof ("+0x") - 1 + 16;
3267 s
= *ret
= bfd_malloc (size
);
3269 goto free_contents_and_exit
;
3271 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3273 for (i
= secsymend
; i
< opdsymend
; ++i
)
3277 if (syms
[i
]->value
> opd
->size
- 8)
3280 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3281 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3285 asection
*sec
= abfd
->sections
;
3292 long mid
= (lo
+ hi
) >> 1;
3293 if (syms
[mid
]->section
->vma
< ent
)
3295 else if (syms
[mid
]->section
->vma
> ent
)
3299 sec
= syms
[mid
]->section
;
3304 if (lo
>= hi
&& lo
> codesecsym
)
3305 sec
= syms
[lo
- 1]->section
;
3307 for (; sec
!= NULL
; sec
= sec
->next
)
3311 /* SEC_LOAD may not be set if SEC is from a separate debug
3313 if ((sec
->flags
& SEC_ALLOC
) == 0)
3315 if ((sec
->flags
& SEC_CODE
) != 0)
3318 s
->flags
|= BSF_SYNTHETIC
;
3319 s
->value
= ent
- s
->section
->vma
;
3322 len
= strlen (syms
[i
]->name
);
3323 memcpy (names
, syms
[i
]->name
, len
+ 1);
3325 /* Have udata.p point back to the original symbol this
3326 synthetic symbol was derived from. */
3327 s
->udata
.p
= syms
[i
];
3333 if (glink
!= NULL
&& relplt
!= NULL
)
3337 /* Add a symbol for the main glink trampoline. */
3338 memset (s
, 0, sizeof *s
);
3340 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3342 s
->value
= resolv_vma
- glink
->vma
;
3344 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3345 names
+= sizeof ("__glink_PLTresolve");
3350 /* FIXME: It would be very much nicer to put sym@plt on the
3351 stub rather than on the glink branch table entry. The
3352 objdump disassembler would then use a sensible symbol
3353 name on plt calls. The difficulty in doing so is
3354 a) finding the stubs, and,
3355 b) matching stubs against plt entries, and,
3356 c) there can be multiple stubs for a given plt entry.
3358 Solving (a) could be done by code scanning, but older
3359 ppc64 binaries used different stubs to current code.
3360 (b) is the tricky one since you need to known the toc
3361 pointer for at least one function that uses a pic stub to
3362 be able to calculate the plt address referenced.
3363 (c) means gdb would need to set multiple breakpoints (or
3364 find the glink branch itself) when setting breakpoints
3365 for pending shared library loads. */
3366 p
= relplt
->relocation
;
3367 for (i
= 0; i
< plt_count
; i
++, p
++)
3371 *s
= **p
->sym_ptr_ptr
;
3372 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3373 we are defining a symbol, ensure one of them is set. */
3374 if ((s
->flags
& BSF_LOCAL
) == 0)
3375 s
->flags
|= BSF_GLOBAL
;
3376 s
->flags
|= BSF_SYNTHETIC
;
3378 s
->value
= glink_vma
- glink
->vma
;
3381 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3382 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3386 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3387 names
+= sizeof ("+0x") - 1;
3388 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3389 names
+= strlen (names
);
3391 memcpy (names
, "@plt", sizeof ("@plt"));
3392 names
+= sizeof ("@plt");
3407 /* The following functions are specific to the ELF linker, while
3408 functions above are used generally. Those named ppc64_elf_* are
3409 called by the main ELF linker code. They appear in this file more
3410 or less in the order in which they are called. eg.
3411 ppc64_elf_check_relocs is called early in the link process,
3412 ppc64_elf_finish_dynamic_sections is one of the last functions
3415 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3416 functions have both a function code symbol and a function descriptor
3417 symbol. A call to foo in a relocatable object file looks like:
3424 The function definition in another object file might be:
3428 . .quad .TOC.@tocbase
3434 When the linker resolves the call during a static link, the branch
3435 unsurprisingly just goes to .foo and the .opd information is unused.
3436 If the function definition is in a shared library, things are a little
3437 different: The call goes via a plt call stub, the opd information gets
3438 copied to the plt, and the linker patches the nop.
3446 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3447 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3448 . std 2,40(1) # this is the general idea
3456 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3458 The "reloc ()" notation is supposed to indicate that the linker emits
3459 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3462 What are the difficulties here? Well, firstly, the relocations
3463 examined by the linker in check_relocs are against the function code
3464 sym .foo, while the dynamic relocation in the plt is emitted against
3465 the function descriptor symbol, foo. Somewhere along the line, we need
3466 to carefully copy dynamic link information from one symbol to the other.
3467 Secondly, the generic part of the elf linker will make .foo a dynamic
3468 symbol as is normal for most other backends. We need foo dynamic
3469 instead, at least for an application final link. However, when
3470 creating a shared library containing foo, we need to have both symbols
3471 dynamic so that references to .foo are satisfied during the early
3472 stages of linking. Otherwise the linker might decide to pull in a
3473 definition from some other object, eg. a static library.
3475 Update: As of August 2004, we support a new convention. Function
3476 calls may use the function descriptor symbol, ie. "bl foo". This
3477 behaves exactly as "bl .foo". */
3479 /* Of those relocs that might be copied as dynamic relocs, this function
3480 selects those that must be copied when linking a shared library,
3481 even when the symbol is local. */
3484 must_be_dyn_reloc (struct bfd_link_info
*info
,
3485 enum elf_ppc64_reloc_type r_type
)
3497 case R_PPC64_TPREL16
:
3498 case R_PPC64_TPREL16_LO
:
3499 case R_PPC64_TPREL16_HI
:
3500 case R_PPC64_TPREL16_HA
:
3501 case R_PPC64_TPREL16_DS
:
3502 case R_PPC64_TPREL16_LO_DS
:
3503 case R_PPC64_TPREL16_HIGHER
:
3504 case R_PPC64_TPREL16_HIGHERA
:
3505 case R_PPC64_TPREL16_HIGHEST
:
3506 case R_PPC64_TPREL16_HIGHESTA
:
3507 case R_PPC64_TPREL64
:
3508 return !info
->executable
;
3512 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3513 copying dynamic variables from a shared lib into an app's dynbss
3514 section, and instead use a dynamic relocation to point into the
3515 shared lib. With code that gcc generates, it's vital that this be
3516 enabled; In the PowerPC64 ABI, the address of a function is actually
3517 the address of a function descriptor, which resides in the .opd
3518 section. gcc uses the descriptor directly rather than going via the
3519 GOT as some other ABI's do, which means that initialized function
3520 pointers must reference the descriptor. Thus, a function pointer
3521 initialized to the address of a function in a shared library will
3522 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3523 redefines the function descriptor symbol to point to the copy. This
3524 presents a problem as a plt entry for that function is also
3525 initialized from the function descriptor symbol and the copy reloc
3526 may not be initialized first. */
3527 #define ELIMINATE_COPY_RELOCS 1
3529 /* Section name for stubs is the associated section name plus this
3531 #define STUB_SUFFIX ".stub"
3534 ppc_stub_long_branch:
3535 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3536 destination, but a 24 bit branch in a stub section will reach.
3539 ppc_stub_plt_branch:
3540 Similar to the above, but a 24 bit branch in the stub section won't
3541 reach its destination.
3542 . addis %r12,%r2,xxx@toc@ha
3543 . ld %r11,xxx@toc@l(%r12)
3548 Used to call a function in a shared library. If it so happens that
3549 the plt entry referenced crosses a 64k boundary, then an extra
3550 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3551 . addis %r12,%r2,xxx@toc@ha
3553 . ld %r11,xxx+0@toc@l(%r12)
3555 . ld %r2,xxx+8@toc@l(%r12)
3556 . ld %r11,xxx+16@toc@l(%r12)
3559 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3560 code to adjust the value and save r2 to support multiple toc sections.
3561 A ppc_stub_long_branch with an r2 offset looks like:
3563 . addis %r2,%r2,off@ha
3564 . addi %r2,%r2,off@l
3567 A ppc_stub_plt_branch with an r2 offset looks like:
3569 . addis %r12,%r2,xxx@toc@ha
3570 . ld %r11,xxx@toc@l(%r12)
3571 . addis %r2,%r2,off@ha
3572 . addi %r2,%r2,off@l
3576 In cases where the "addis" instruction would add zero, the "addis" is
3577 omitted and following instructions modified slightly in some cases.
3580 enum ppc_stub_type
{
3582 ppc_stub_long_branch
,
3583 ppc_stub_long_branch_r2off
,
3584 ppc_stub_plt_branch
,
3585 ppc_stub_plt_branch_r2off
,
3589 struct ppc_stub_hash_entry
{
3591 /* Base hash table entry structure. */
3592 struct bfd_hash_entry root
;
3594 enum ppc_stub_type stub_type
;
3596 /* The stub section. */
3599 /* Offset within stub_sec of the beginning of this stub. */
3600 bfd_vma stub_offset
;
3602 /* Given the symbol's value and its section we can determine its final
3603 value when building the stubs (so the stub knows where to jump. */
3604 bfd_vma target_value
;
3605 asection
*target_section
;
3607 /* The symbol table entry, if any, that this was derived from. */
3608 struct ppc_link_hash_entry
*h
;
3609 struct plt_entry
*plt_ent
;
3611 /* And the reloc addend that this was derived from. */
3614 /* Where this stub is being called from, or, in the case of combined
3615 stub sections, the first input section in the group. */
3619 struct ppc_branch_hash_entry
{
3621 /* Base hash table entry structure. */
3622 struct bfd_hash_entry root
;
3624 /* Offset within branch lookup table. */
3625 unsigned int offset
;
3627 /* Generation marker. */
3631 struct ppc_link_hash_entry
3633 struct elf_link_hash_entry elf
;
3636 /* A pointer to the most recently used stub hash entry against this
3638 struct ppc_stub_hash_entry
*stub_cache
;
3640 /* A pointer to the next symbol starting with a '.' */
3641 struct ppc_link_hash_entry
*next_dot_sym
;
3644 /* Track dynamic relocs copied for this symbol. */
3645 struct elf_dyn_relocs
*dyn_relocs
;
3647 /* Link between function code and descriptor symbols. */
3648 struct ppc_link_hash_entry
*oh
;
3650 /* Flag function code and descriptor symbols. */
3651 unsigned int is_func
:1;
3652 unsigned int is_func_descriptor
:1;
3653 unsigned int fake
:1;
3655 /* Whether global opd/toc sym has been adjusted or not.
3656 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3657 should be set for all globals defined in any opd/toc section. */
3658 unsigned int adjust_done
:1;
3660 /* Set if we twiddled this symbol to weak at some stage. */
3661 unsigned int was_undefined
:1;
3663 /* Contexts in which symbol is used in the GOT (or TOC).
3664 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3665 corresponding relocs are encountered during check_relocs.
3666 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3667 indicate the corresponding GOT entry type is not needed.
3668 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3669 a TPREL one. We use a separate flag rather than setting TPREL
3670 just for convenience in distinguishing the two cases. */
3671 #define TLS_GD 1 /* GD reloc. */
3672 #define TLS_LD 2 /* LD reloc. */
3673 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3674 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3675 #define TLS_TLS 16 /* Any TLS reloc. */
3676 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3677 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3678 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3679 unsigned char tls_mask
;
3682 /* ppc64 ELF linker hash table. */
3684 struct ppc_link_hash_table
3686 struct elf_link_hash_table elf
;
3688 /* The stub hash table. */
3689 struct bfd_hash_table stub_hash_table
;
3691 /* Another hash table for plt_branch stubs. */
3692 struct bfd_hash_table branch_hash_table
;
3694 /* Hash table for function prologue tocsave. */
3695 htab_t tocsave_htab
;
3697 /* Linker stub bfd. */
3700 /* Linker call-backs. */
3701 asection
* (*add_stub_section
) (const char *, asection
*);
3702 void (*layout_sections_again
) (void);
3704 /* Array to keep track of which stub sections have been created, and
3705 information on stub grouping. */
3707 /* This is the section to which stubs in the group will be attached. */
3709 /* The stub section. */
3711 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3715 /* Temp used when calculating TOC pointers. */
3718 asection
*toc_first_sec
;
3720 /* Highest input section id. */
3723 /* Highest output section index. */
3726 /* Used when adding symbols. */
3727 struct ppc_link_hash_entry
*dot_syms
;
3729 /* List of input sections for each output section. */
3730 asection
**input_list
;
3732 /* Short-cuts to get to dynamic linker sections. */
3744 asection
*glink_eh_frame
;
3746 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3747 struct ppc_link_hash_entry
*tls_get_addr
;
3748 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3750 /* The size of reliplt used by got entry relocs. */
3751 bfd_size_type got_reli_size
;
3754 unsigned long stub_count
[ppc_stub_plt_call
];
3756 /* Number of stubs against global syms. */
3757 unsigned long stub_globals
;
3759 /* Set if PLT call stubs should load r11. */
3760 unsigned int plt_static_chain
:1;
3762 /* Set if we should emit symbols for stubs. */
3763 unsigned int emit_stub_syms
:1;
3765 /* Set if __tls_get_addr optimization should not be done. */
3766 unsigned int no_tls_get_addr_opt
:1;
3768 /* Support for multiple toc sections. */
3769 unsigned int do_multi_toc
:1;
3770 unsigned int multi_toc_needed
:1;
3771 unsigned int second_toc_pass
:1;
3772 unsigned int do_toc_opt
:1;
3775 unsigned int stub_error
:1;
3777 /* Temp used by ppc64_elf_process_dot_syms. */
3778 unsigned int twiddled_syms
:1;
3780 /* Incremented every time we size stubs. */
3781 unsigned int stub_iteration
;
3783 /* Small local sym cache. */
3784 struct sym_cache sym_cache
;
3787 /* Rename some of the generic section flags to better document how they
3790 /* Nonzero if this section has TLS related relocations. */
3791 #define has_tls_reloc sec_flg0
3793 /* Nonzero if this section has a call to __tls_get_addr. */
3794 #define has_tls_get_addr_call sec_flg1
3796 /* Nonzero if this section has any toc or got relocs. */
3797 #define has_toc_reloc sec_flg2
3799 /* Nonzero if this section has a call to another section that uses
3801 #define makes_toc_func_call sec_flg3
3803 /* Recursion protection when determining above flag. */
3804 #define call_check_in_progress sec_flg4
3805 #define call_check_done sec_flg5
3807 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3809 #define ppc_hash_table(p) \
3810 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3811 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3813 #define ppc_stub_hash_lookup(table, string, create, copy) \
3814 ((struct ppc_stub_hash_entry *) \
3815 bfd_hash_lookup ((table), (string), (create), (copy)))
3817 #define ppc_branch_hash_lookup(table, string, create, copy) \
3818 ((struct ppc_branch_hash_entry *) \
3819 bfd_hash_lookup ((table), (string), (create), (copy)))
3821 /* Create an entry in the stub hash table. */
3823 static struct bfd_hash_entry
*
3824 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3825 struct bfd_hash_table
*table
,
3828 /* Allocate the structure if it has not already been allocated by a
3832 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3837 /* Call the allocation method of the superclass. */
3838 entry
= bfd_hash_newfunc (entry
, table
, string
);
3841 struct ppc_stub_hash_entry
*eh
;
3843 /* Initialize the local fields. */
3844 eh
= (struct ppc_stub_hash_entry
*) entry
;
3845 eh
->stub_type
= ppc_stub_none
;
3846 eh
->stub_sec
= NULL
;
3847 eh
->stub_offset
= 0;
3848 eh
->target_value
= 0;
3849 eh
->target_section
= NULL
;
3857 /* Create an entry in the branch hash table. */
3859 static struct bfd_hash_entry
*
3860 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3861 struct bfd_hash_table
*table
,
3864 /* Allocate the structure if it has not already been allocated by a
3868 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3873 /* Call the allocation method of the superclass. */
3874 entry
= bfd_hash_newfunc (entry
, table
, string
);
3877 struct ppc_branch_hash_entry
*eh
;
3879 /* Initialize the local fields. */
3880 eh
= (struct ppc_branch_hash_entry
*) entry
;
3888 /* Create an entry in a ppc64 ELF linker hash table. */
3890 static struct bfd_hash_entry
*
3891 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3892 struct bfd_hash_table
*table
,
3895 /* Allocate the structure if it has not already been allocated by a
3899 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3904 /* Call the allocation method of the superclass. */
3905 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3908 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3910 memset (&eh
->u
.stub_cache
, 0,
3911 (sizeof (struct ppc_link_hash_entry
)
3912 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3914 /* When making function calls, old ABI code references function entry
3915 points (dot symbols), while new ABI code references the function
3916 descriptor symbol. We need to make any combination of reference and
3917 definition work together, without breaking archive linking.
3919 For a defined function "foo" and an undefined call to "bar":
3920 An old object defines "foo" and ".foo", references ".bar" (possibly
3922 A new object defines "foo" and references "bar".
3924 A new object thus has no problem with its undefined symbols being
3925 satisfied by definitions in an old object. On the other hand, the
3926 old object won't have ".bar" satisfied by a new object.
3928 Keep a list of newly added dot-symbols. */
3930 if (string
[0] == '.')
3932 struct ppc_link_hash_table
*htab
;
3934 htab
= (struct ppc_link_hash_table
*) table
;
3935 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3936 htab
->dot_syms
= eh
;
3943 struct tocsave_entry
{
3949 tocsave_htab_hash (const void *p
)
3951 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
3952 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
3956 tocsave_htab_eq (const void *p1
, const void *p2
)
3958 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
3959 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
3960 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
3963 /* Create a ppc64 ELF linker hash table. */
3965 static struct bfd_link_hash_table
*
3966 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3968 struct ppc_link_hash_table
*htab
;
3969 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3971 htab
= bfd_zmalloc (amt
);
3975 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3976 sizeof (struct ppc_link_hash_entry
),
3983 /* Init the stub hash table too. */
3984 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3985 sizeof (struct ppc_stub_hash_entry
)))
3988 /* And the branch hash table. */
3989 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3990 sizeof (struct ppc_branch_hash_entry
)))
3993 htab
->tocsave_htab
= htab_try_create (1024,
3997 if (htab
->tocsave_htab
== NULL
)
4000 /* Initializing two fields of the union is just cosmetic. We really
4001 only care about glist, but when compiled on a 32-bit host the
4002 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4003 debugger inspection of these fields look nicer. */
4004 htab
->elf
.init_got_refcount
.refcount
= 0;
4005 htab
->elf
.init_got_refcount
.glist
= NULL
;
4006 htab
->elf
.init_plt_refcount
.refcount
= 0;
4007 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4008 htab
->elf
.init_got_offset
.offset
= 0;
4009 htab
->elf
.init_got_offset
.glist
= NULL
;
4010 htab
->elf
.init_plt_offset
.offset
= 0;
4011 htab
->elf
.init_plt_offset
.glist
= NULL
;
4013 return &htab
->elf
.root
;
4016 /* Free the derived linker hash table. */
4019 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4021 struct ppc_link_hash_table
*htab
= (struct ppc_link_hash_table
*) hash
;
4023 bfd_hash_table_free (&htab
->stub_hash_table
);
4024 bfd_hash_table_free (&htab
->branch_hash_table
);
4025 if (htab
->tocsave_htab
)
4026 htab_delete (htab
->tocsave_htab
);
4027 _bfd_generic_link_hash_table_free (hash
);
4030 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4033 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4035 struct ppc_link_hash_table
*htab
;
4037 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4039 /* Always hook our dynamic sections into the first bfd, which is the
4040 linker created stub bfd. This ensures that the GOT header is at
4041 the start of the output TOC section. */
4042 htab
= ppc_hash_table (info
);
4045 htab
->stub_bfd
= abfd
;
4046 htab
->elf
.dynobj
= abfd
;
4049 /* Build a name for an entry in the stub hash table. */
4052 ppc_stub_name (const asection
*input_section
,
4053 const asection
*sym_sec
,
4054 const struct ppc_link_hash_entry
*h
,
4055 const Elf_Internal_Rela
*rel
)
4060 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4061 offsets from a sym as a branch target? In fact, we could
4062 probably assume the addend is always zero. */
4063 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4067 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4068 stub_name
= bfd_malloc (len
);
4069 if (stub_name
== NULL
)
4072 sprintf (stub_name
, "%08x.%s+%x",
4073 input_section
->id
& 0xffffffff,
4074 h
->elf
.root
.root
.string
,
4075 (int) rel
->r_addend
& 0xffffffff);
4079 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4080 stub_name
= bfd_malloc (len
);
4081 if (stub_name
== NULL
)
4084 sprintf (stub_name
, "%08x.%x:%x+%x",
4085 input_section
->id
& 0xffffffff,
4086 sym_sec
->id
& 0xffffffff,
4087 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4088 (int) rel
->r_addend
& 0xffffffff);
4090 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4091 stub_name
[len
- 2] = 0;
4095 /* Look up an entry in the stub hash. Stub entries are cached because
4096 creating the stub name takes a bit of time. */
4098 static struct ppc_stub_hash_entry
*
4099 ppc_get_stub_entry (const asection
*input_section
,
4100 const asection
*sym_sec
,
4101 struct ppc_link_hash_entry
*h
,
4102 const Elf_Internal_Rela
*rel
,
4103 struct ppc_link_hash_table
*htab
)
4105 struct ppc_stub_hash_entry
*stub_entry
;
4106 const asection
*id_sec
;
4108 /* If this input section is part of a group of sections sharing one
4109 stub section, then use the id of the first section in the group.
4110 Stub names need to include a section id, as there may well be
4111 more than one stub used to reach say, printf, and we need to
4112 distinguish between them. */
4113 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4115 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4116 && h
->u
.stub_cache
->h
== h
4117 && h
->u
.stub_cache
->id_sec
== id_sec
)
4119 stub_entry
= h
->u
.stub_cache
;
4125 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4126 if (stub_name
== NULL
)
4129 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4130 stub_name
, FALSE
, FALSE
);
4132 h
->u
.stub_cache
= stub_entry
;
4140 /* Add a new stub entry to the stub hash. Not all fields of the new
4141 stub entry are initialised. */
4143 static struct ppc_stub_hash_entry
*
4144 ppc_add_stub (const char *stub_name
,
4146 struct bfd_link_info
*info
)
4148 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4151 struct ppc_stub_hash_entry
*stub_entry
;
4153 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4154 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4155 if (stub_sec
== NULL
)
4157 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4158 if (stub_sec
== NULL
)
4164 namelen
= strlen (link_sec
->name
);
4165 len
= namelen
+ sizeof (STUB_SUFFIX
);
4166 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4170 memcpy (s_name
, link_sec
->name
, namelen
);
4171 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4172 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4173 if (stub_sec
== NULL
)
4175 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4177 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4180 /* Enter this entry into the linker stub hash table. */
4181 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4183 if (stub_entry
== NULL
)
4185 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4186 section
->owner
, stub_name
);
4190 stub_entry
->stub_sec
= stub_sec
;
4191 stub_entry
->stub_offset
= 0;
4192 stub_entry
->id_sec
= link_sec
;
4196 /* Create sections for linker generated code. */
4199 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4201 struct ppc_link_hash_table
*htab
;
4204 htab
= ppc_hash_table (info
);
4208 /* Create .sfpr for code to save and restore fp regs. */
4209 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4210 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4211 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4213 if (htab
->sfpr
== NULL
4214 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4217 /* Create .glink for lazy dynamic linking support. */
4218 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4220 if (htab
->glink
== NULL
4221 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4224 if (!info
->no_ld_generated_unwind_info
)
4226 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4227 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4228 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4231 if (htab
->glink_eh_frame
== NULL
4232 || !bfd_set_section_alignment (abfd
, htab
->glink_eh_frame
, 2))
4236 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4237 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4238 if (htab
->iplt
== NULL
4239 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4242 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4243 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4244 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4247 if (htab
->reliplt
== NULL
4248 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4251 /* Create branch lookup table for plt_branch stubs. */
4252 flags
= (SEC_ALLOC
| SEC_LOAD
4253 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4254 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4256 if (htab
->brlt
== NULL
4257 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4263 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4264 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4265 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4268 if (htab
->relbrlt
== NULL
4269 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4275 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4276 not already done. */
4279 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4281 asection
*got
, *relgot
;
4283 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4285 if (!is_ppc64_elf (abfd
))
4292 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4295 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4300 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4301 | SEC_LINKER_CREATED
);
4303 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4305 || !bfd_set_section_alignment (abfd
, got
, 3))
4308 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4309 flags
| SEC_READONLY
);
4311 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4314 ppc64_elf_tdata (abfd
)->got
= got
;
4315 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4319 /* Create the dynamic sections, and set up shortcuts. */
4322 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4324 struct ppc_link_hash_table
*htab
;
4326 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4329 htab
= ppc_hash_table (info
);
4334 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4335 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4336 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4337 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4339 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4341 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4342 || (!info
->shared
&& !htab
->relbss
))
4348 /* Follow indirect and warning symbol links. */
4350 static inline struct bfd_link_hash_entry
*
4351 follow_link (struct bfd_link_hash_entry
*h
)
4353 while (h
->type
== bfd_link_hash_indirect
4354 || h
->type
== bfd_link_hash_warning
)
4359 static inline struct elf_link_hash_entry
*
4360 elf_follow_link (struct elf_link_hash_entry
*h
)
4362 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4365 static inline struct ppc_link_hash_entry
*
4366 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4368 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4371 /* Merge PLT info on FROM with that on TO. */
4374 move_plt_plist (struct ppc_link_hash_entry
*from
,
4375 struct ppc_link_hash_entry
*to
)
4377 if (from
->elf
.plt
.plist
!= NULL
)
4379 if (to
->elf
.plt
.plist
!= NULL
)
4381 struct plt_entry
**entp
;
4382 struct plt_entry
*ent
;
4384 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4386 struct plt_entry
*dent
;
4388 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4389 if (dent
->addend
== ent
->addend
)
4391 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4398 *entp
= to
->elf
.plt
.plist
;
4401 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4402 from
->elf
.plt
.plist
= NULL
;
4406 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4409 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4410 struct elf_link_hash_entry
*dir
,
4411 struct elf_link_hash_entry
*ind
)
4413 struct ppc_link_hash_entry
*edir
, *eind
;
4415 edir
= (struct ppc_link_hash_entry
*) dir
;
4416 eind
= (struct ppc_link_hash_entry
*) ind
;
4418 edir
->is_func
|= eind
->is_func
;
4419 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4420 edir
->tls_mask
|= eind
->tls_mask
;
4421 if (eind
->oh
!= NULL
)
4422 edir
->oh
= ppc_follow_link (eind
->oh
);
4424 /* If called to transfer flags for a weakdef during processing
4425 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4426 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4427 if (!(ELIMINATE_COPY_RELOCS
4428 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4429 && edir
->elf
.dynamic_adjusted
))
4430 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4432 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4433 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4434 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4435 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4437 /* If we were called to copy over info for a weak sym, that's all. */
4438 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4441 /* Copy over any dynamic relocs we may have on the indirect sym. */
4442 if (eind
->dyn_relocs
!= NULL
)
4444 if (edir
->dyn_relocs
!= NULL
)
4446 struct elf_dyn_relocs
**pp
;
4447 struct elf_dyn_relocs
*p
;
4449 /* Add reloc counts against the indirect sym to the direct sym
4450 list. Merge any entries against the same section. */
4451 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4453 struct elf_dyn_relocs
*q
;
4455 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4456 if (q
->sec
== p
->sec
)
4458 q
->pc_count
+= p
->pc_count
;
4459 q
->count
+= p
->count
;
4466 *pp
= edir
->dyn_relocs
;
4469 edir
->dyn_relocs
= eind
->dyn_relocs
;
4470 eind
->dyn_relocs
= NULL
;
4473 /* Copy over got entries that we may have already seen to the
4474 symbol which just became indirect. */
4475 if (eind
->elf
.got
.glist
!= NULL
)
4477 if (edir
->elf
.got
.glist
!= NULL
)
4479 struct got_entry
**entp
;
4480 struct got_entry
*ent
;
4482 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4484 struct got_entry
*dent
;
4486 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4487 if (dent
->addend
== ent
->addend
4488 && dent
->owner
== ent
->owner
4489 && dent
->tls_type
== ent
->tls_type
)
4491 dent
->got
.refcount
+= ent
->got
.refcount
;
4498 *entp
= edir
->elf
.got
.glist
;
4501 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4502 eind
->elf
.got
.glist
= NULL
;
4505 /* And plt entries. */
4506 move_plt_plist (eind
, edir
);
4508 if (eind
->elf
.dynindx
!= -1)
4510 if (edir
->elf
.dynindx
!= -1)
4511 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4512 edir
->elf
.dynstr_index
);
4513 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4514 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4515 eind
->elf
.dynindx
= -1;
4516 eind
->elf
.dynstr_index
= 0;
4520 /* Find the function descriptor hash entry from the given function code
4521 hash entry FH. Link the entries via their OH fields. */
4523 static struct ppc_link_hash_entry
*
4524 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4526 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4530 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4532 fdh
= (struct ppc_link_hash_entry
*)
4533 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4537 fdh
->is_func_descriptor
= 1;
4543 return ppc_follow_link (fdh
);
4546 /* Make a fake function descriptor sym for the code sym FH. */
4548 static struct ppc_link_hash_entry
*
4549 make_fdh (struct bfd_link_info
*info
,
4550 struct ppc_link_hash_entry
*fh
)
4554 struct bfd_link_hash_entry
*bh
;
4555 struct ppc_link_hash_entry
*fdh
;
4557 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4558 newsym
= bfd_make_empty_symbol (abfd
);
4559 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4560 newsym
->section
= bfd_und_section_ptr
;
4562 newsym
->flags
= BSF_WEAK
;
4565 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4566 newsym
->flags
, newsym
->section
,
4567 newsym
->value
, NULL
, FALSE
, FALSE
,
4571 fdh
= (struct ppc_link_hash_entry
*) bh
;
4572 fdh
->elf
.non_elf
= 0;
4574 fdh
->is_func_descriptor
= 1;
4581 /* Fix function descriptor symbols defined in .opd sections to be
4585 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4586 struct bfd_link_info
*info
,
4587 Elf_Internal_Sym
*isym
,
4588 const char **name ATTRIBUTE_UNUSED
,
4589 flagword
*flags ATTRIBUTE_UNUSED
,
4591 bfd_vma
*value ATTRIBUTE_UNUSED
)
4593 if ((ibfd
->flags
& DYNAMIC
) == 0
4594 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4595 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4597 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4599 if ((ibfd
->flags
& DYNAMIC
) == 0)
4600 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4602 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4604 else if (*sec
!= NULL
4605 && strcmp ((*sec
)->name
, ".opd") == 0)
4606 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4611 /* This function makes an old ABI object reference to ".bar" cause the
4612 inclusion of a new ABI object archive that defines "bar".
4613 NAME is a symbol defined in an archive. Return a symbol in the hash
4614 table that might be satisfied by the archive symbols. */
4616 static struct elf_link_hash_entry
*
4617 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4618 struct bfd_link_info
*info
,
4621 struct elf_link_hash_entry
*h
;
4625 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4627 /* Don't return this sym if it is a fake function descriptor
4628 created by add_symbol_adjust. */
4629 && !(h
->root
.type
== bfd_link_hash_undefweak
4630 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4636 len
= strlen (name
);
4637 dot_name
= bfd_alloc (abfd
, len
+ 2);
4638 if (dot_name
== NULL
)
4639 return (struct elf_link_hash_entry
*) 0 - 1;
4641 memcpy (dot_name
+ 1, name
, len
+ 1);
4642 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4643 bfd_release (abfd
, dot_name
);
4647 /* This function satisfies all old ABI object references to ".bar" if a
4648 new ABI object defines "bar". Well, at least, undefined dot symbols
4649 are made weak. This stops later archive searches from including an
4650 object if we already have a function descriptor definition. It also
4651 prevents the linker complaining about undefined symbols.
4652 We also check and correct mismatched symbol visibility here. The
4653 most restrictive visibility of the function descriptor and the
4654 function entry symbol is used. */
4657 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4659 struct ppc_link_hash_table
*htab
;
4660 struct ppc_link_hash_entry
*fdh
;
4662 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4665 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4666 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4668 if (eh
->elf
.root
.root
.string
[0] != '.')
4671 htab
= ppc_hash_table (info
);
4675 fdh
= lookup_fdh (eh
, htab
);
4678 if (!info
->relocatable
4679 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4680 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4681 && eh
->elf
.ref_regular
)
4683 /* Make an undefweak function descriptor sym, which is enough to
4684 pull in an --as-needed shared lib, but won't cause link
4685 errors. Archives are handled elsewhere. */
4686 fdh
= make_fdh (info
, eh
);
4689 fdh
->elf
.ref_regular
= 1;
4694 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4695 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4696 if (entry_vis
< descr_vis
)
4697 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4698 else if (entry_vis
> descr_vis
)
4699 eh
->elf
.other
+= descr_vis
- entry_vis
;
4701 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4702 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4703 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4705 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4706 eh
->was_undefined
= 1;
4707 htab
->twiddled_syms
= 1;
4714 /* Process list of dot-symbols we made in link_hash_newfunc. */
4717 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4719 struct ppc_link_hash_table
*htab
;
4720 struct ppc_link_hash_entry
**p
, *eh
;
4722 if (!is_ppc64_elf (info
->output_bfd
))
4724 htab
= ppc_hash_table (info
);
4728 if (is_ppc64_elf (ibfd
))
4730 p
= &htab
->dot_syms
;
4731 while ((eh
= *p
) != NULL
)
4734 if (!add_symbol_adjust (eh
, info
))
4736 p
= &eh
->u
.next_dot_sym
;
4740 /* Clear the list for non-ppc64 input files. */
4741 p
= &htab
->dot_syms
;
4742 while ((eh
= *p
) != NULL
)
4745 p
= &eh
->u
.next_dot_sym
;
4748 /* We need to fix the undefs list for any syms we have twiddled to
4750 if (htab
->twiddled_syms
)
4752 bfd_link_repair_undef_list (&htab
->elf
.root
);
4753 htab
->twiddled_syms
= 0;
4758 /* Undo hash table changes when an --as-needed input file is determined
4759 not to be needed. */
4762 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4763 struct bfd_link_info
*info
)
4765 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4770 htab
->dot_syms
= NULL
;
4774 /* If --just-symbols against a final linked binary, then assume we need
4775 toc adjusting stubs when calling functions defined there. */
4778 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4780 if ((sec
->flags
& SEC_CODE
) != 0
4781 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4782 && is_ppc64_elf (sec
->owner
))
4784 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4786 && got
->size
>= elf_backend_got_header_size
4787 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4788 sec
->has_toc_reloc
= 1;
4790 _bfd_elf_link_just_syms (sec
, info
);
4793 static struct plt_entry
**
4794 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4795 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4797 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4798 struct plt_entry
**local_plt
;
4799 unsigned char *local_got_tls_masks
;
4801 if (local_got_ents
== NULL
)
4803 bfd_size_type size
= symtab_hdr
->sh_info
;
4805 size
*= (sizeof (*local_got_ents
)
4806 + sizeof (*local_plt
)
4807 + sizeof (*local_got_tls_masks
));
4808 local_got_ents
= bfd_zalloc (abfd
, size
);
4809 if (local_got_ents
== NULL
)
4811 elf_local_got_ents (abfd
) = local_got_ents
;
4814 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4816 struct got_entry
*ent
;
4818 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4819 if (ent
->addend
== r_addend
4820 && ent
->owner
== abfd
4821 && ent
->tls_type
== tls_type
)
4825 bfd_size_type amt
= sizeof (*ent
);
4826 ent
= bfd_alloc (abfd
, amt
);
4829 ent
->next
= local_got_ents
[r_symndx
];
4830 ent
->addend
= r_addend
;
4832 ent
->tls_type
= tls_type
;
4833 ent
->is_indirect
= FALSE
;
4834 ent
->got
.refcount
= 0;
4835 local_got_ents
[r_symndx
] = ent
;
4837 ent
->got
.refcount
+= 1;
4840 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4841 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4842 local_got_tls_masks
[r_symndx
] |= tls_type
;
4844 return local_plt
+ r_symndx
;
4848 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4850 struct plt_entry
*ent
;
4852 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4853 if (ent
->addend
== addend
)
4857 bfd_size_type amt
= sizeof (*ent
);
4858 ent
= bfd_alloc (abfd
, amt
);
4862 ent
->addend
= addend
;
4863 ent
->plt
.refcount
= 0;
4866 ent
->plt
.refcount
+= 1;
4871 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4873 return (r_type
== R_PPC64_REL24
4874 || r_type
== R_PPC64_REL14
4875 || r_type
== R_PPC64_REL14_BRTAKEN
4876 || r_type
== R_PPC64_REL14_BRNTAKEN
4877 || r_type
== R_PPC64_ADDR24
4878 || r_type
== R_PPC64_ADDR14
4879 || r_type
== R_PPC64_ADDR14_BRTAKEN
4880 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4883 /* Look through the relocs for a section during the first phase, and
4884 calculate needed space in the global offset table, procedure
4885 linkage table, and dynamic reloc sections. */
4888 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4889 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4891 struct ppc_link_hash_table
*htab
;
4892 Elf_Internal_Shdr
*symtab_hdr
;
4893 struct elf_link_hash_entry
**sym_hashes
;
4894 const Elf_Internal_Rela
*rel
;
4895 const Elf_Internal_Rela
*rel_end
;
4897 asection
**opd_sym_map
;
4898 struct elf_link_hash_entry
*tga
, *dottga
;
4900 if (info
->relocatable
)
4903 /* Don't do anything special with non-loaded, non-alloced sections.
4904 In particular, any relocs in such sections should not affect GOT
4905 and PLT reference counting (ie. we don't allow them to create GOT
4906 or PLT entries), there's no possibility or desire to optimize TLS
4907 relocs, and there's not much point in propagating relocs to shared
4908 libs that the dynamic linker won't relocate. */
4909 if ((sec
->flags
& SEC_ALLOC
) == 0)
4912 BFD_ASSERT (is_ppc64_elf (abfd
));
4914 htab
= ppc_hash_table (info
);
4918 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4919 FALSE
, FALSE
, TRUE
);
4920 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4921 FALSE
, FALSE
, TRUE
);
4922 symtab_hdr
= &elf_symtab_hdr (abfd
);
4923 sym_hashes
= elf_sym_hashes (abfd
);
4926 if (strcmp (sec
->name
, ".opd") == 0)
4928 /* Garbage collection needs some extra help with .opd sections.
4929 We don't want to necessarily keep everything referenced by
4930 relocs in .opd, as that would keep all functions. Instead,
4931 if we reference an .opd symbol (a function descriptor), we
4932 want to keep the function code symbol's section. This is
4933 easy for global symbols, but for local syms we need to keep
4934 information about the associated function section. */
4937 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4938 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4939 if (opd_sym_map
== NULL
)
4941 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4942 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4943 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4946 if (htab
->sfpr
== NULL
4947 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4950 rel_end
= relocs
+ sec
->reloc_count
;
4951 for (rel
= relocs
; rel
< rel_end
; rel
++)
4953 unsigned long r_symndx
;
4954 struct elf_link_hash_entry
*h
;
4955 enum elf_ppc64_reloc_type r_type
;
4957 struct _ppc64_elf_section_data
*ppc64_sec
;
4958 struct plt_entry
**ifunc
;
4960 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4961 if (r_symndx
< symtab_hdr
->sh_info
)
4965 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4966 h
= elf_follow_link (h
);
4973 if (h
->type
== STT_GNU_IFUNC
)
4976 ifunc
= &h
->plt
.plist
;
4981 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4986 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4988 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4989 rel
->r_addend
, PLT_IFUNC
);
4994 r_type
= ELF64_R_TYPE (rel
->r_info
);
4995 if (is_branch_reloc (r_type
))
4997 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5000 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5001 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5002 /* We have a new-style __tls_get_addr call with a marker
5006 /* Mark this section as having an old-style call. */
5007 sec
->has_tls_get_addr_call
= 1;
5010 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5012 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5020 /* These special tls relocs tie a call to __tls_get_addr with
5021 its parameter symbol. */
5024 case R_PPC64_GOT_TLSLD16
:
5025 case R_PPC64_GOT_TLSLD16_LO
:
5026 case R_PPC64_GOT_TLSLD16_HI
:
5027 case R_PPC64_GOT_TLSLD16_HA
:
5028 tls_type
= TLS_TLS
| TLS_LD
;
5031 case R_PPC64_GOT_TLSGD16
:
5032 case R_PPC64_GOT_TLSGD16_LO
:
5033 case R_PPC64_GOT_TLSGD16_HI
:
5034 case R_PPC64_GOT_TLSGD16_HA
:
5035 tls_type
= TLS_TLS
| TLS_GD
;
5038 case R_PPC64_GOT_TPREL16_DS
:
5039 case R_PPC64_GOT_TPREL16_LO_DS
:
5040 case R_PPC64_GOT_TPREL16_HI
:
5041 case R_PPC64_GOT_TPREL16_HA
:
5042 if (!info
->executable
)
5043 info
->flags
|= DF_STATIC_TLS
;
5044 tls_type
= TLS_TLS
| TLS_TPREL
;
5047 case R_PPC64_GOT_DTPREL16_DS
:
5048 case R_PPC64_GOT_DTPREL16_LO_DS
:
5049 case R_PPC64_GOT_DTPREL16_HI
:
5050 case R_PPC64_GOT_DTPREL16_HA
:
5051 tls_type
= TLS_TLS
| TLS_DTPREL
;
5053 sec
->has_tls_reloc
= 1;
5057 case R_PPC64_GOT16_DS
:
5058 case R_PPC64_GOT16_HA
:
5059 case R_PPC64_GOT16_HI
:
5060 case R_PPC64_GOT16_LO
:
5061 case R_PPC64_GOT16_LO_DS
:
5062 /* This symbol requires a global offset table entry. */
5063 sec
->has_toc_reloc
= 1;
5064 if (r_type
== R_PPC64_GOT_TLSLD16
5065 || r_type
== R_PPC64_GOT_TLSGD16
5066 || r_type
== R_PPC64_GOT_TPREL16_DS
5067 || r_type
== R_PPC64_GOT_DTPREL16_DS
5068 || r_type
== R_PPC64_GOT16
5069 || r_type
== R_PPC64_GOT16_DS
)
5071 htab
->do_multi_toc
= 1;
5072 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5075 if (ppc64_elf_tdata (abfd
)->got
== NULL
5076 && !create_got_section (abfd
, info
))
5081 struct ppc_link_hash_entry
*eh
;
5082 struct got_entry
*ent
;
5084 eh
= (struct ppc_link_hash_entry
*) h
;
5085 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5086 if (ent
->addend
== rel
->r_addend
5087 && ent
->owner
== abfd
5088 && ent
->tls_type
== tls_type
)
5092 bfd_size_type amt
= sizeof (*ent
);
5093 ent
= bfd_alloc (abfd
, amt
);
5096 ent
->next
= eh
->elf
.got
.glist
;
5097 ent
->addend
= rel
->r_addend
;
5099 ent
->tls_type
= tls_type
;
5100 ent
->is_indirect
= FALSE
;
5101 ent
->got
.refcount
= 0;
5102 eh
->elf
.got
.glist
= ent
;
5104 ent
->got
.refcount
+= 1;
5105 eh
->tls_mask
|= tls_type
;
5108 /* This is a global offset table entry for a local symbol. */
5109 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5110 rel
->r_addend
, tls_type
))
5114 case R_PPC64_PLT16_HA
:
5115 case R_PPC64_PLT16_HI
:
5116 case R_PPC64_PLT16_LO
:
5119 /* This symbol requires a procedure linkage table entry. We
5120 actually build the entry in adjust_dynamic_symbol,
5121 because this might be a case of linking PIC code without
5122 linking in any dynamic objects, in which case we don't
5123 need to generate a procedure linkage table after all. */
5126 /* It does not make sense to have a procedure linkage
5127 table entry for a local symbol. */
5128 bfd_set_error (bfd_error_bad_value
);
5133 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5136 if (h
->root
.root
.string
[0] == '.'
5137 && h
->root
.root
.string
[1] != '\0')
5138 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5142 /* The following relocations don't need to propagate the
5143 relocation if linking a shared object since they are
5144 section relative. */
5145 case R_PPC64_SECTOFF
:
5146 case R_PPC64_SECTOFF_LO
:
5147 case R_PPC64_SECTOFF_HI
:
5148 case R_PPC64_SECTOFF_HA
:
5149 case R_PPC64_SECTOFF_DS
:
5150 case R_PPC64_SECTOFF_LO_DS
:
5151 case R_PPC64_DTPREL16
:
5152 case R_PPC64_DTPREL16_LO
:
5153 case R_PPC64_DTPREL16_HI
:
5154 case R_PPC64_DTPREL16_HA
:
5155 case R_PPC64_DTPREL16_DS
:
5156 case R_PPC64_DTPREL16_LO_DS
:
5157 case R_PPC64_DTPREL16_HIGHER
:
5158 case R_PPC64_DTPREL16_HIGHERA
:
5159 case R_PPC64_DTPREL16_HIGHEST
:
5160 case R_PPC64_DTPREL16_HIGHESTA
:
5165 case R_PPC64_REL16_LO
:
5166 case R_PPC64_REL16_HI
:
5167 case R_PPC64_REL16_HA
:
5171 case R_PPC64_TOC16_DS
:
5172 htab
->do_multi_toc
= 1;
5173 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5174 case R_PPC64_TOC16_LO
:
5175 case R_PPC64_TOC16_HI
:
5176 case R_PPC64_TOC16_HA
:
5177 case R_PPC64_TOC16_LO_DS
:
5178 sec
->has_toc_reloc
= 1;
5181 /* This relocation describes the C++ object vtable hierarchy.
5182 Reconstruct it for later use during GC. */
5183 case R_PPC64_GNU_VTINHERIT
:
5184 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5188 /* This relocation describes which C++ vtable entries are actually
5189 used. Record for later use during GC. */
5190 case R_PPC64_GNU_VTENTRY
:
5191 BFD_ASSERT (h
!= NULL
);
5193 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5198 case R_PPC64_REL14_BRTAKEN
:
5199 case R_PPC64_REL14_BRNTAKEN
:
5201 asection
*dest
= NULL
;
5203 /* Heuristic: If jumping outside our section, chances are
5204 we are going to need a stub. */
5207 /* If the sym is weak it may be overridden later, so
5208 don't assume we know where a weak sym lives. */
5209 if (h
->root
.type
== bfd_link_hash_defined
)
5210 dest
= h
->root
.u
.def
.section
;
5214 Elf_Internal_Sym
*isym
;
5216 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5221 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5225 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5230 if (h
!= NULL
&& ifunc
== NULL
)
5232 /* We may need a .plt entry if the function this reloc
5233 refers to is in a shared lib. */
5234 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5237 if (h
->root
.root
.string
[0] == '.'
5238 && h
->root
.root
.string
[1] != '\0')
5239 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5240 if (h
== tga
|| h
== dottga
)
5241 sec
->has_tls_reloc
= 1;
5245 case R_PPC64_TPREL64
:
5246 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5247 if (!info
->executable
)
5248 info
->flags
|= DF_STATIC_TLS
;
5251 case R_PPC64_DTPMOD64
:
5252 if (rel
+ 1 < rel_end
5253 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5254 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5255 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5257 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5260 case R_PPC64_DTPREL64
:
5261 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5263 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5264 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5265 /* This is the second reloc of a dtpmod, dtprel pair.
5266 Don't mark with TLS_DTPREL. */
5270 sec
->has_tls_reloc
= 1;
5273 struct ppc_link_hash_entry
*eh
;
5274 eh
= (struct ppc_link_hash_entry
*) h
;
5275 eh
->tls_mask
|= tls_type
;
5278 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5279 rel
->r_addend
, tls_type
))
5282 ppc64_sec
= ppc64_elf_section_data (sec
);
5283 if (ppc64_sec
->sec_type
!= sec_toc
)
5287 /* One extra to simplify get_tls_mask. */
5288 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5289 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5290 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5292 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5293 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5294 if (ppc64_sec
->u
.toc
.add
== NULL
)
5296 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5297 ppc64_sec
->sec_type
= sec_toc
;
5299 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5300 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5301 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5303 /* Mark the second slot of a GD or LD entry.
5304 -1 to indicate GD and -2 to indicate LD. */
5305 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5306 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5307 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5308 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5311 case R_PPC64_TPREL16
:
5312 case R_PPC64_TPREL16_LO
:
5313 case R_PPC64_TPREL16_HI
:
5314 case R_PPC64_TPREL16_HA
:
5315 case R_PPC64_TPREL16_DS
:
5316 case R_PPC64_TPREL16_LO_DS
:
5317 case R_PPC64_TPREL16_HIGHER
:
5318 case R_PPC64_TPREL16_HIGHERA
:
5319 case R_PPC64_TPREL16_HIGHEST
:
5320 case R_PPC64_TPREL16_HIGHESTA
:
5323 if (!info
->executable
)
5324 info
->flags
|= DF_STATIC_TLS
;
5329 case R_PPC64_ADDR64
:
5330 if (opd_sym_map
!= NULL
5331 && rel
+ 1 < rel_end
5332 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5336 if (h
->root
.root
.string
[0] == '.'
5337 && h
->root
.root
.string
[1] != 0
5338 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5341 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5346 Elf_Internal_Sym
*isym
;
5348 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5353 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5354 if (s
!= NULL
&& s
!= sec
)
5355 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5363 case R_PPC64_ADDR14
:
5364 case R_PPC64_ADDR14_BRNTAKEN
:
5365 case R_PPC64_ADDR14_BRTAKEN
:
5366 case R_PPC64_ADDR16
:
5367 case R_PPC64_ADDR16_DS
:
5368 case R_PPC64_ADDR16_HA
:
5369 case R_PPC64_ADDR16_HI
:
5370 case R_PPC64_ADDR16_HIGHER
:
5371 case R_PPC64_ADDR16_HIGHERA
:
5372 case R_PPC64_ADDR16_HIGHEST
:
5373 case R_PPC64_ADDR16_HIGHESTA
:
5374 case R_PPC64_ADDR16_LO
:
5375 case R_PPC64_ADDR16_LO_DS
:
5376 case R_PPC64_ADDR24
:
5377 case R_PPC64_ADDR32
:
5378 case R_PPC64_UADDR16
:
5379 case R_PPC64_UADDR32
:
5380 case R_PPC64_UADDR64
:
5382 if (h
!= NULL
&& !info
->shared
)
5383 /* We may need a copy reloc. */
5386 /* Don't propagate .opd relocs. */
5387 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5390 /* If we are creating a shared library, and this is a reloc
5391 against a global symbol, or a non PC relative reloc
5392 against a local symbol, then we need to copy the reloc
5393 into the shared library. However, if we are linking with
5394 -Bsymbolic, we do not need to copy a reloc against a
5395 global symbol which is defined in an object we are
5396 including in the link (i.e., DEF_REGULAR is set). At
5397 this point we have not seen all the input files, so it is
5398 possible that DEF_REGULAR is not set now but will be set
5399 later (it is never cleared). In case of a weak definition,
5400 DEF_REGULAR may be cleared later by a strong definition in
5401 a shared library. We account for that possibility below by
5402 storing information in the dyn_relocs field of the hash
5403 table entry. A similar situation occurs when creating
5404 shared libraries and symbol visibility changes render the
5407 If on the other hand, we are creating an executable, we
5408 may need to keep relocations for symbols satisfied by a
5409 dynamic library if we manage to avoid copy relocs for the
5413 && (must_be_dyn_reloc (info
, r_type
)
5415 && (! info
->symbolic
5416 || h
->root
.type
== bfd_link_hash_defweak
5417 || !h
->def_regular
))))
5418 || (ELIMINATE_COPY_RELOCS
5421 && (h
->root
.type
== bfd_link_hash_defweak
5422 || !h
->def_regular
))
5426 struct elf_dyn_relocs
*p
;
5427 struct elf_dyn_relocs
**head
;
5429 /* We must copy these reloc types into the output file.
5430 Create a reloc section in dynobj and make room for
5434 sreloc
= _bfd_elf_make_dynamic_reloc_section
5435 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5441 /* If this is a global symbol, we count the number of
5442 relocations we need for this symbol. */
5445 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5449 /* Track dynamic relocs needed for local syms too.
5450 We really need local syms available to do this
5454 Elf_Internal_Sym
*isym
;
5456 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5461 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5465 vpp
= &elf_section_data (s
)->local_dynrel
;
5466 head
= (struct elf_dyn_relocs
**) vpp
;
5470 if (p
== NULL
|| p
->sec
!= sec
)
5472 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5483 if (!must_be_dyn_reloc (info
, r_type
))
5496 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5497 of the code entry point, and its section. */
5500 opd_entry_value (asection
*opd_sec
,
5502 asection
**code_sec
,
5505 bfd
*opd_bfd
= opd_sec
->owner
;
5506 Elf_Internal_Rela
*relocs
;
5507 Elf_Internal_Rela
*lo
, *hi
, *look
;
5510 /* No relocs implies we are linking a --just-symbols object. */
5511 if (opd_sec
->reloc_count
== 0)
5515 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5516 return (bfd_vma
) -1;
5518 val
= bfd_get_64 (opd_bfd
, buf
);
5519 if (code_sec
!= NULL
)
5521 asection
*sec
, *likely
= NULL
;
5522 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5524 && (sec
->flags
& SEC_LOAD
) != 0
5525 && (sec
->flags
& SEC_ALLOC
) != 0)
5530 if (code_off
!= NULL
)
5531 *code_off
= val
- likely
->vma
;
5537 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5539 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5541 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5543 /* Go find the opd reloc at the sym address. */
5545 BFD_ASSERT (lo
!= NULL
);
5546 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5550 look
= lo
+ (hi
- lo
) / 2;
5551 if (look
->r_offset
< offset
)
5553 else if (look
->r_offset
> offset
)
5557 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5559 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5560 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5562 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5565 if (symndx
< symtab_hdr
->sh_info
)
5567 Elf_Internal_Sym
*sym
;
5569 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5572 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5573 symtab_hdr
->sh_info
,
5574 0, NULL
, NULL
, NULL
);
5577 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5581 val
= sym
->st_value
;
5582 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5583 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5587 struct elf_link_hash_entry
**sym_hashes
;
5588 struct elf_link_hash_entry
*rh
;
5590 sym_hashes
= elf_sym_hashes (opd_bfd
);
5591 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5592 rh
= elf_follow_link (rh
);
5593 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5594 || rh
->root
.type
== bfd_link_hash_defweak
);
5595 val
= rh
->root
.u
.def
.value
;
5596 sec
= rh
->root
.u
.def
.section
;
5598 val
+= look
->r_addend
;
5599 if (code_off
!= NULL
)
5601 if (code_sec
!= NULL
)
5603 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5604 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5613 /* Return true if symbol is defined in a regular object file. */
5616 is_static_defined (struct elf_link_hash_entry
*h
)
5618 return ((h
->root
.type
== bfd_link_hash_defined
5619 || h
->root
.type
== bfd_link_hash_defweak
)
5620 && h
->root
.u
.def
.section
!= NULL
5621 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5624 /* If FDH is a function descriptor symbol, return the associated code
5625 entry symbol if it is defined. Return NULL otherwise. */
5627 static struct ppc_link_hash_entry
*
5628 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5630 if (fdh
->is_func_descriptor
)
5632 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5633 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5634 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5640 /* If FH is a function code entry symbol, return the associated
5641 function descriptor symbol if it is defined. Return NULL otherwise. */
5643 static struct ppc_link_hash_entry
*
5644 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5647 && fh
->oh
->is_func_descriptor
)
5649 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5650 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5651 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5657 /* Mark all our entry sym sections, both opd and code section. */
5660 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5662 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5663 struct bfd_sym_chain
*sym
;
5668 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5670 struct ppc_link_hash_entry
*eh
, *fh
;
5673 eh
= (struct ppc_link_hash_entry
*)
5674 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5677 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5678 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5681 fh
= defined_code_entry (eh
);
5684 sec
= fh
->elf
.root
.u
.def
.section
;
5685 sec
->flags
|= SEC_KEEP
;
5687 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5688 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5689 eh
->elf
.root
.u
.def
.value
,
5690 &sec
, NULL
) != (bfd_vma
) -1)
5691 sec
->flags
|= SEC_KEEP
;
5693 sec
= eh
->elf
.root
.u
.def
.section
;
5694 sec
->flags
|= SEC_KEEP
;
5698 /* Mark sections containing dynamically referenced symbols. When
5699 building shared libraries, we must assume that any visible symbol is
5703 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5705 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5706 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5707 struct ppc_link_hash_entry
*fdh
;
5709 /* Dynamic linking info is on the func descriptor sym. */
5710 fdh
= defined_func_desc (eh
);
5714 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5715 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5716 && (eh
->elf
.ref_dynamic
5717 || (!info
->executable
5718 && eh
->elf
.def_regular
5719 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5720 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
5721 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
5722 || !bfd_hide_sym_by_version (info
->version_info
,
5723 eh
->elf
.root
.root
.string
)))))
5726 struct ppc_link_hash_entry
*fh
;
5728 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5730 /* Function descriptor syms cause the associated
5731 function code sym section to be marked. */
5732 fh
= defined_code_entry (eh
);
5735 code_sec
= fh
->elf
.root
.u
.def
.section
;
5736 code_sec
->flags
|= SEC_KEEP
;
5738 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5739 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5740 eh
->elf
.root
.u
.def
.value
,
5741 &code_sec
, NULL
) != (bfd_vma
) -1)
5742 code_sec
->flags
|= SEC_KEEP
;
5748 /* Return the section that should be marked against GC for a given
5752 ppc64_elf_gc_mark_hook (asection
*sec
,
5753 struct bfd_link_info
*info
,
5754 Elf_Internal_Rela
*rel
,
5755 struct elf_link_hash_entry
*h
,
5756 Elf_Internal_Sym
*sym
)
5760 /* Syms return NULL if we're marking .opd, so we avoid marking all
5761 function sections, as all functions are referenced in .opd. */
5763 if (get_opd_info (sec
) != NULL
)
5768 enum elf_ppc64_reloc_type r_type
;
5769 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5771 r_type
= ELF64_R_TYPE (rel
->r_info
);
5774 case R_PPC64_GNU_VTINHERIT
:
5775 case R_PPC64_GNU_VTENTRY
:
5779 switch (h
->root
.type
)
5781 case bfd_link_hash_defined
:
5782 case bfd_link_hash_defweak
:
5783 eh
= (struct ppc_link_hash_entry
*) h
;
5784 fdh
= defined_func_desc (eh
);
5788 /* Function descriptor syms cause the associated
5789 function code sym section to be marked. */
5790 fh
= defined_code_entry (eh
);
5793 /* They also mark their opd section. */
5794 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5796 rsec
= fh
->elf
.root
.u
.def
.section
;
5798 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5799 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5800 eh
->elf
.root
.u
.def
.value
,
5801 &rsec
, NULL
) != (bfd_vma
) -1)
5802 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5804 rsec
= h
->root
.u
.def
.section
;
5807 case bfd_link_hash_common
:
5808 rsec
= h
->root
.u
.c
.p
->section
;
5812 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5818 struct _opd_sec_data
*opd
;
5820 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5821 opd
= get_opd_info (rsec
);
5822 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5826 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5833 /* Update the .got, .plt. and dynamic reloc reference counts for the
5834 section being removed. */
5837 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5838 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5840 struct ppc_link_hash_table
*htab
;
5841 Elf_Internal_Shdr
*symtab_hdr
;
5842 struct elf_link_hash_entry
**sym_hashes
;
5843 struct got_entry
**local_got_ents
;
5844 const Elf_Internal_Rela
*rel
, *relend
;
5846 if (info
->relocatable
)
5849 if ((sec
->flags
& SEC_ALLOC
) == 0)
5852 elf_section_data (sec
)->local_dynrel
= NULL
;
5854 htab
= ppc_hash_table (info
);
5858 symtab_hdr
= &elf_symtab_hdr (abfd
);
5859 sym_hashes
= elf_sym_hashes (abfd
);
5860 local_got_ents
= elf_local_got_ents (abfd
);
5862 relend
= relocs
+ sec
->reloc_count
;
5863 for (rel
= relocs
; rel
< relend
; rel
++)
5865 unsigned long r_symndx
;
5866 enum elf_ppc64_reloc_type r_type
;
5867 struct elf_link_hash_entry
*h
= NULL
;
5868 unsigned char tls_type
= 0;
5870 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5871 r_type
= ELF64_R_TYPE (rel
->r_info
);
5872 if (r_symndx
>= symtab_hdr
->sh_info
)
5874 struct ppc_link_hash_entry
*eh
;
5875 struct elf_dyn_relocs
**pp
;
5876 struct elf_dyn_relocs
*p
;
5878 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5879 h
= elf_follow_link (h
);
5880 eh
= (struct ppc_link_hash_entry
*) h
;
5882 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5885 /* Everything must go for SEC. */
5891 if (is_branch_reloc (r_type
))
5893 struct plt_entry
**ifunc
= NULL
;
5896 if (h
->type
== STT_GNU_IFUNC
)
5897 ifunc
= &h
->plt
.plist
;
5899 else if (local_got_ents
!= NULL
)
5901 struct plt_entry
**local_plt
= (struct plt_entry
**)
5902 (local_got_ents
+ symtab_hdr
->sh_info
);
5903 unsigned char *local_got_tls_masks
= (unsigned char *)
5904 (local_plt
+ symtab_hdr
->sh_info
);
5905 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5906 ifunc
= local_plt
+ r_symndx
;
5910 struct plt_entry
*ent
;
5912 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5913 if (ent
->addend
== rel
->r_addend
)
5917 if (ent
->plt
.refcount
> 0)
5918 ent
->plt
.refcount
-= 1;
5925 case R_PPC64_GOT_TLSLD16
:
5926 case R_PPC64_GOT_TLSLD16_LO
:
5927 case R_PPC64_GOT_TLSLD16_HI
:
5928 case R_PPC64_GOT_TLSLD16_HA
:
5929 tls_type
= TLS_TLS
| TLS_LD
;
5932 case R_PPC64_GOT_TLSGD16
:
5933 case R_PPC64_GOT_TLSGD16_LO
:
5934 case R_PPC64_GOT_TLSGD16_HI
:
5935 case R_PPC64_GOT_TLSGD16_HA
:
5936 tls_type
= TLS_TLS
| TLS_GD
;
5939 case R_PPC64_GOT_TPREL16_DS
:
5940 case R_PPC64_GOT_TPREL16_LO_DS
:
5941 case R_PPC64_GOT_TPREL16_HI
:
5942 case R_PPC64_GOT_TPREL16_HA
:
5943 tls_type
= TLS_TLS
| TLS_TPREL
;
5946 case R_PPC64_GOT_DTPREL16_DS
:
5947 case R_PPC64_GOT_DTPREL16_LO_DS
:
5948 case R_PPC64_GOT_DTPREL16_HI
:
5949 case R_PPC64_GOT_DTPREL16_HA
:
5950 tls_type
= TLS_TLS
| TLS_DTPREL
;
5954 case R_PPC64_GOT16_DS
:
5955 case R_PPC64_GOT16_HA
:
5956 case R_PPC64_GOT16_HI
:
5957 case R_PPC64_GOT16_LO
:
5958 case R_PPC64_GOT16_LO_DS
:
5961 struct got_entry
*ent
;
5966 ent
= local_got_ents
[r_symndx
];
5968 for (; ent
!= NULL
; ent
= ent
->next
)
5969 if (ent
->addend
== rel
->r_addend
5970 && ent
->owner
== abfd
5971 && ent
->tls_type
== tls_type
)
5975 if (ent
->got
.refcount
> 0)
5976 ent
->got
.refcount
-= 1;
5980 case R_PPC64_PLT16_HA
:
5981 case R_PPC64_PLT16_HI
:
5982 case R_PPC64_PLT16_LO
:
5986 case R_PPC64_REL14_BRNTAKEN
:
5987 case R_PPC64_REL14_BRTAKEN
:
5991 struct plt_entry
*ent
;
5993 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5994 if (ent
->addend
== rel
->r_addend
)
5996 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5997 ent
->plt
.refcount
-= 1;
6008 /* The maximum size of .sfpr. */
6009 #define SFPR_MAX (218*4)
6011 struct sfpr_def_parms
6013 const char name
[12];
6014 unsigned char lo
, hi
;
6015 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6016 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6019 /* Auto-generate _save*, _rest* functions in .sfpr. */
6022 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6024 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6026 size_t len
= strlen (parm
->name
);
6027 bfd_boolean writing
= FALSE
;
6033 memcpy (sym
, parm
->name
, len
);
6036 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6038 struct elf_link_hash_entry
*h
;
6040 sym
[len
+ 0] = i
/ 10 + '0';
6041 sym
[len
+ 1] = i
% 10 + '0';
6042 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6046 h
->root
.type
= bfd_link_hash_defined
;
6047 h
->root
.u
.def
.section
= htab
->sfpr
;
6048 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6051 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6053 if (htab
->sfpr
->contents
== NULL
)
6055 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6056 if (htab
->sfpr
->contents
== NULL
)
6062 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6064 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6066 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6067 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6075 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6077 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6082 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6084 p
= savegpr0 (abfd
, p
, r
);
6085 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6087 bfd_put_32 (abfd
, BLR
, p
);
6092 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6094 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6099 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6101 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6103 p
= restgpr0 (abfd
, p
, r
);
6104 bfd_put_32 (abfd
, MTLR_R0
, p
);
6108 p
= restgpr0 (abfd
, p
, 30);
6109 p
= restgpr0 (abfd
, p
, 31);
6111 bfd_put_32 (abfd
, BLR
, p
);
6116 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6118 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6123 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6125 p
= savegpr1 (abfd
, p
, r
);
6126 bfd_put_32 (abfd
, BLR
, p
);
6131 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6133 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6138 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6140 p
= restgpr1 (abfd
, p
, r
);
6141 bfd_put_32 (abfd
, BLR
, p
);
6146 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6148 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6153 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6155 p
= savefpr (abfd
, p
, r
);
6156 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6158 bfd_put_32 (abfd
, BLR
, p
);
6163 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6165 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6170 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6172 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6174 p
= restfpr (abfd
, p
, r
);
6175 bfd_put_32 (abfd
, MTLR_R0
, p
);
6179 p
= restfpr (abfd
, p
, 30);
6180 p
= restfpr (abfd
, p
, 31);
6182 bfd_put_32 (abfd
, BLR
, p
);
6187 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6189 p
= savefpr (abfd
, p
, r
);
6190 bfd_put_32 (abfd
, BLR
, p
);
6195 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6197 p
= restfpr (abfd
, p
, r
);
6198 bfd_put_32 (abfd
, BLR
, p
);
6203 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6205 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6207 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6212 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6214 p
= savevr (abfd
, p
, r
);
6215 bfd_put_32 (abfd
, BLR
, p
);
6220 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6222 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6224 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6229 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6231 p
= restvr (abfd
, p
, r
);
6232 bfd_put_32 (abfd
, BLR
, p
);
6236 /* Called via elf_link_hash_traverse to transfer dynamic linking
6237 information on function code symbol entries to their corresponding
6238 function descriptor symbol entries. */
6241 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6243 struct bfd_link_info
*info
;
6244 struct ppc_link_hash_table
*htab
;
6245 struct plt_entry
*ent
;
6246 struct ppc_link_hash_entry
*fh
;
6247 struct ppc_link_hash_entry
*fdh
;
6248 bfd_boolean force_local
;
6250 fh
= (struct ppc_link_hash_entry
*) h
;
6251 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6255 htab
= ppc_hash_table (info
);
6259 /* Resolve undefined references to dot-symbols as the value
6260 in the function descriptor, if we have one in a regular object.
6261 This is to satisfy cases like ".quad .foo". Calls to functions
6262 in dynamic objects are handled elsewhere. */
6263 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6264 && fh
->was_undefined
6265 && (fdh
= defined_func_desc (fh
)) != NULL
6266 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6267 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6268 fdh
->elf
.root
.u
.def
.value
,
6269 &fh
->elf
.root
.u
.def
.section
,
6270 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6272 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6273 fh
->elf
.forced_local
= 1;
6274 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6275 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6278 /* If this is a function code symbol, transfer dynamic linking
6279 information to the function descriptor symbol. */
6283 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6284 if (ent
->plt
.refcount
> 0)
6287 || fh
->elf
.root
.root
.string
[0] != '.'
6288 || fh
->elf
.root
.root
.string
[1] == '\0')
6291 /* Find the corresponding function descriptor symbol. Create it
6292 as undefined if necessary. */
6294 fdh
= lookup_fdh (fh
, htab
);
6296 && !info
->executable
6297 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6298 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6300 fdh
= make_fdh (info
, fh
);
6305 /* Fake function descriptors are made undefweak. If the function
6306 code symbol is strong undefined, make the fake sym the same.
6307 If the function code symbol is defined, then force the fake
6308 descriptor local; We can't support overriding of symbols in a
6309 shared library on a fake descriptor. */
6313 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6315 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6317 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6318 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6320 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6321 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6323 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6328 && !fdh
->elf
.forced_local
6329 && (!info
->executable
6330 || fdh
->elf
.def_dynamic
6331 || fdh
->elf
.ref_dynamic
6332 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6333 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6335 if (fdh
->elf
.dynindx
== -1)
6336 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6338 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6339 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6340 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6341 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6342 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6344 move_plt_plist (fh
, fdh
);
6345 fdh
->elf
.needs_plt
= 1;
6347 fdh
->is_func_descriptor
= 1;
6352 /* Now that the info is on the function descriptor, clear the
6353 function code sym info. Any function code syms for which we
6354 don't have a definition in a regular file, we force local.
6355 This prevents a shared library from exporting syms that have
6356 been imported from another library. Function code syms that
6357 are really in the library we must leave global to prevent the
6358 linker dragging in a definition from a static library. */
6359 force_local
= (!fh
->elf
.def_regular
6361 || !fdh
->elf
.def_regular
6362 || fdh
->elf
.forced_local
);
6363 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6368 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6369 this hook to a) provide some gcc support functions, and b) transfer
6370 dynamic linking information gathered so far on function code symbol
6371 entries, to their corresponding function descriptor symbol entries. */
6374 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6375 struct bfd_link_info
*info
)
6377 struct ppc_link_hash_table
*htab
;
6379 const struct sfpr_def_parms funcs
[] =
6381 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6382 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6383 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6384 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6385 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6386 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6387 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6388 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6389 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6390 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6391 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6392 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6395 htab
= ppc_hash_table (info
);
6399 if (htab
->sfpr
== NULL
)
6400 /* We don't have any relocs. */
6403 /* Provide any missing _save* and _rest* functions. */
6404 htab
->sfpr
->size
= 0;
6405 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6406 if (!sfpr_define (info
, &funcs
[i
]))
6409 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6411 if (htab
->sfpr
->size
== 0)
6412 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6417 /* Adjust a symbol defined by a dynamic object and referenced by a
6418 regular object. The current definition is in some section of the
6419 dynamic object, but we're not including those sections. We have to
6420 change the definition to something the rest of the link can
6424 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6425 struct elf_link_hash_entry
*h
)
6427 struct ppc_link_hash_table
*htab
;
6430 htab
= ppc_hash_table (info
);
6434 /* Deal with function syms. */
6435 if (h
->type
== STT_FUNC
6436 || h
->type
== STT_GNU_IFUNC
6439 /* Clear procedure linkage table information for any symbol that
6440 won't need a .plt entry. */
6441 struct plt_entry
*ent
;
6442 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6443 if (ent
->plt
.refcount
> 0)
6446 || (h
->type
!= STT_GNU_IFUNC
6447 && (SYMBOL_CALLS_LOCAL (info
, h
)
6448 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6449 && h
->root
.type
== bfd_link_hash_undefweak
))))
6451 h
->plt
.plist
= NULL
;
6456 h
->plt
.plist
= NULL
;
6458 /* If this is a weak symbol, and there is a real definition, the
6459 processor independent code will have arranged for us to see the
6460 real definition first, and we can just use the same value. */
6461 if (h
->u
.weakdef
!= NULL
)
6463 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6464 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6465 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6466 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6467 if (ELIMINATE_COPY_RELOCS
)
6468 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6472 /* If we are creating a shared library, we must presume that the
6473 only references to the symbol are via the global offset table.
6474 For such cases we need not do anything here; the relocations will
6475 be handled correctly by relocate_section. */
6479 /* If there are no references to this symbol that do not use the
6480 GOT, we don't need to generate a copy reloc. */
6481 if (!h
->non_got_ref
)
6484 /* Don't generate a copy reloc for symbols defined in the executable. */
6485 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6488 if (ELIMINATE_COPY_RELOCS
)
6490 struct ppc_link_hash_entry
* eh
;
6491 struct elf_dyn_relocs
*p
;
6493 eh
= (struct ppc_link_hash_entry
*) h
;
6494 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6496 s
= p
->sec
->output_section
;
6497 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6501 /* If we didn't find any dynamic relocs in read-only sections, then
6502 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6510 if (h
->plt
.plist
!= NULL
)
6512 /* We should never get here, but unfortunately there are versions
6513 of gcc out there that improperly (for this ABI) put initialized
6514 function pointers, vtable refs and suchlike in read-only
6515 sections. Allow them to proceed, but warn that this might
6516 break at runtime. */
6517 info
->callbacks
->einfo
6518 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6519 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6520 h
->root
.root
.string
);
6523 /* This is a reference to a symbol defined by a dynamic object which
6524 is not a function. */
6528 info
->callbacks
->einfo (_("%P: dynamic variable `%s' is zero size\n"),
6529 h
->root
.root
.string
);
6533 /* We must allocate the symbol in our .dynbss section, which will
6534 become part of the .bss section of the executable. There will be
6535 an entry for this symbol in the .dynsym section. The dynamic
6536 object will contain position independent code, so all references
6537 from the dynamic object to this symbol will go through the global
6538 offset table. The dynamic linker will use the .dynsym entry to
6539 determine the address it must put in the global offset table, so
6540 both the dynamic object and the regular object will refer to the
6541 same memory location for the variable. */
6543 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6544 to copy the initial value out of the dynamic object and into the
6545 runtime process image. We need to remember the offset into the
6546 .rela.bss section we are going to use. */
6547 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6549 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6555 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6558 /* If given a function descriptor symbol, hide both the function code
6559 sym and the descriptor. */
6561 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6562 struct elf_link_hash_entry
*h
,
6563 bfd_boolean force_local
)
6565 struct ppc_link_hash_entry
*eh
;
6566 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6568 eh
= (struct ppc_link_hash_entry
*) h
;
6569 if (eh
->is_func_descriptor
)
6571 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6576 struct ppc_link_hash_table
*htab
;
6579 /* We aren't supposed to use alloca in BFD because on
6580 systems which do not have alloca the version in libiberty
6581 calls xmalloc, which might cause the program to crash
6582 when it runs out of memory. This function doesn't have a
6583 return status, so there's no way to gracefully return an
6584 error. So cheat. We know that string[-1] can be safely
6585 accessed; It's either a string in an ELF string table,
6586 or allocated in an objalloc structure. */
6588 p
= eh
->elf
.root
.root
.string
- 1;
6591 htab
= ppc_hash_table (info
);
6595 fh
= (struct ppc_link_hash_entry
*)
6596 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6599 /* Unfortunately, if it so happens that the string we were
6600 looking for was allocated immediately before this string,
6601 then we overwrote the string terminator. That's the only
6602 reason the lookup should fail. */
6605 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6606 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6608 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6609 fh
= (struct ppc_link_hash_entry
*)
6610 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6619 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6624 get_sym_h (struct elf_link_hash_entry
**hp
,
6625 Elf_Internal_Sym
**symp
,
6627 unsigned char **tls_maskp
,
6628 Elf_Internal_Sym
**locsymsp
,
6629 unsigned long r_symndx
,
6632 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6634 if (r_symndx
>= symtab_hdr
->sh_info
)
6636 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6637 struct elf_link_hash_entry
*h
;
6639 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6640 h
= elf_follow_link (h
);
6648 if (symsecp
!= NULL
)
6650 asection
*symsec
= NULL
;
6651 if (h
->root
.type
== bfd_link_hash_defined
6652 || h
->root
.type
== bfd_link_hash_defweak
)
6653 symsec
= h
->root
.u
.def
.section
;
6657 if (tls_maskp
!= NULL
)
6659 struct ppc_link_hash_entry
*eh
;
6661 eh
= (struct ppc_link_hash_entry
*) h
;
6662 *tls_maskp
= &eh
->tls_mask
;
6667 Elf_Internal_Sym
*sym
;
6668 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6670 if (locsyms
== NULL
)
6672 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6673 if (locsyms
== NULL
)
6674 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6675 symtab_hdr
->sh_info
,
6676 0, NULL
, NULL
, NULL
);
6677 if (locsyms
== NULL
)
6679 *locsymsp
= locsyms
;
6681 sym
= locsyms
+ r_symndx
;
6689 if (symsecp
!= NULL
)
6690 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6692 if (tls_maskp
!= NULL
)
6694 struct got_entry
**lgot_ents
;
6695 unsigned char *tls_mask
;
6698 lgot_ents
= elf_local_got_ents (ibfd
);
6699 if (lgot_ents
!= NULL
)
6701 struct plt_entry
**local_plt
= (struct plt_entry
**)
6702 (lgot_ents
+ symtab_hdr
->sh_info
);
6703 unsigned char *lgot_masks
= (unsigned char *)
6704 (local_plt
+ symtab_hdr
->sh_info
);
6705 tls_mask
= &lgot_masks
[r_symndx
];
6707 *tls_maskp
= tls_mask
;
6713 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6714 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6715 type suitable for optimization, and 1 otherwise. */
6718 get_tls_mask (unsigned char **tls_maskp
,
6719 unsigned long *toc_symndx
,
6720 bfd_vma
*toc_addend
,
6721 Elf_Internal_Sym
**locsymsp
,
6722 const Elf_Internal_Rela
*rel
,
6725 unsigned long r_symndx
;
6727 struct elf_link_hash_entry
*h
;
6728 Elf_Internal_Sym
*sym
;
6732 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6733 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6736 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6738 || ppc64_elf_section_data (sec
) == NULL
6739 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6742 /* Look inside a TOC section too. */
6745 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6746 off
= h
->root
.u
.def
.value
;
6749 off
= sym
->st_value
;
6750 off
+= rel
->r_addend
;
6751 BFD_ASSERT (off
% 8 == 0);
6752 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6753 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6754 if (toc_symndx
!= NULL
)
6755 *toc_symndx
= r_symndx
;
6756 if (toc_addend
!= NULL
)
6757 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6758 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6760 if ((h
== NULL
|| is_static_defined (h
))
6761 && (next_r
== -1 || next_r
== -2))
6766 /* Find (or create) an entry in the tocsave hash table. */
6768 static struct tocsave_entry
*
6769 tocsave_find (struct ppc_link_hash_table
*htab
,
6770 enum insert_option insert
,
6771 Elf_Internal_Sym
**local_syms
,
6772 const Elf_Internal_Rela
*irela
,
6775 unsigned long r_indx
;
6776 struct elf_link_hash_entry
*h
;
6777 Elf_Internal_Sym
*sym
;
6778 struct tocsave_entry ent
, *p
;
6780 struct tocsave_entry
**slot
;
6782 r_indx
= ELF64_R_SYM (irela
->r_info
);
6783 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
6785 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
6787 (*_bfd_error_handler
)
6788 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6793 ent
.offset
= h
->root
.u
.def
.value
;
6795 ent
.offset
= sym
->st_value
;
6796 ent
.offset
+= irela
->r_addend
;
6798 hash
= tocsave_htab_hash (&ent
);
6799 slot
= ((struct tocsave_entry
**)
6800 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
6806 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
6815 /* Adjust all global syms defined in opd sections. In gcc generated
6816 code for the old ABI, these will already have been done. */
6819 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6821 struct ppc_link_hash_entry
*eh
;
6823 struct _opd_sec_data
*opd
;
6825 if (h
->root
.type
== bfd_link_hash_indirect
)
6828 if (h
->root
.type
!= bfd_link_hash_defined
6829 && h
->root
.type
!= bfd_link_hash_defweak
)
6832 eh
= (struct ppc_link_hash_entry
*) h
;
6833 if (eh
->adjust_done
)
6836 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6837 opd
= get_opd_info (sym_sec
);
6838 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6840 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6843 /* This entry has been deleted. */
6844 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6847 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6848 if (elf_discarded_section (dsec
))
6850 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6854 eh
->elf
.root
.u
.def
.value
= 0;
6855 eh
->elf
.root
.u
.def
.section
= dsec
;
6858 eh
->elf
.root
.u
.def
.value
+= adjust
;
6859 eh
->adjust_done
= 1;
6864 /* Handles decrementing dynamic reloc counts for the reloc specified by
6865 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6866 have already been determined. */
6869 dec_dynrel_count (bfd_vma r_info
,
6871 struct bfd_link_info
*info
,
6872 Elf_Internal_Sym
**local_syms
,
6873 struct elf_link_hash_entry
*h
,
6876 enum elf_ppc64_reloc_type r_type
;
6877 struct elf_dyn_relocs
*p
;
6878 struct elf_dyn_relocs
**pp
;
6880 /* Can this reloc be dynamic? This switch, and later tests here
6881 should be kept in sync with the code in check_relocs. */
6882 r_type
= ELF64_R_TYPE (r_info
);
6888 case R_PPC64_TPREL16
:
6889 case R_PPC64_TPREL16_LO
:
6890 case R_PPC64_TPREL16_HI
:
6891 case R_PPC64_TPREL16_HA
:
6892 case R_PPC64_TPREL16_DS
:
6893 case R_PPC64_TPREL16_LO_DS
:
6894 case R_PPC64_TPREL16_HIGHER
:
6895 case R_PPC64_TPREL16_HIGHERA
:
6896 case R_PPC64_TPREL16_HIGHEST
:
6897 case R_PPC64_TPREL16_HIGHESTA
:
6901 case R_PPC64_TPREL64
:
6902 case R_PPC64_DTPMOD64
:
6903 case R_PPC64_DTPREL64
:
6904 case R_PPC64_ADDR64
:
6908 case R_PPC64_ADDR14
:
6909 case R_PPC64_ADDR14_BRNTAKEN
:
6910 case R_PPC64_ADDR14_BRTAKEN
:
6911 case R_PPC64_ADDR16
:
6912 case R_PPC64_ADDR16_DS
:
6913 case R_PPC64_ADDR16_HA
:
6914 case R_PPC64_ADDR16_HI
:
6915 case R_PPC64_ADDR16_HIGHER
:
6916 case R_PPC64_ADDR16_HIGHERA
:
6917 case R_PPC64_ADDR16_HIGHEST
:
6918 case R_PPC64_ADDR16_HIGHESTA
:
6919 case R_PPC64_ADDR16_LO
:
6920 case R_PPC64_ADDR16_LO_DS
:
6921 case R_PPC64_ADDR24
:
6922 case R_PPC64_ADDR32
:
6923 case R_PPC64_UADDR16
:
6924 case R_PPC64_UADDR32
:
6925 case R_PPC64_UADDR64
:
6930 if (local_syms
!= NULL
)
6932 unsigned long r_symndx
;
6933 Elf_Internal_Sym
*sym
;
6934 bfd
*ibfd
= sec
->owner
;
6936 r_symndx
= ELF64_R_SYM (r_info
);
6937 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6942 && (must_be_dyn_reloc (info
, r_type
)
6945 || h
->root
.type
== bfd_link_hash_defweak
6946 || !h
->def_regular
))))
6947 || (ELIMINATE_COPY_RELOCS
6950 && (h
->root
.type
== bfd_link_hash_defweak
6951 || !h
->def_regular
)))
6957 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6960 if (sym_sec
!= NULL
)
6962 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6963 pp
= (struct elf_dyn_relocs
**) vpp
;
6967 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6968 pp
= (struct elf_dyn_relocs
**) vpp
;
6971 /* elf_gc_sweep may have already removed all dyn relocs associated
6972 with local syms for a given section. Don't report a dynreloc
6978 while ((p
= *pp
) != NULL
)
6982 if (!must_be_dyn_reloc (info
, r_type
))
6992 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
6994 bfd_set_error (bfd_error_bad_value
);
6998 /* Remove unused Official Procedure Descriptor entries. Currently we
6999 only remove those associated with functions in discarded link-once
7000 sections, or weakly defined functions that have been overridden. It
7001 would be possible to remove many more entries for statically linked
7005 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
7008 bfd_boolean some_edited
= FALSE
;
7009 asection
*need_pad
= NULL
;
7011 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7014 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7015 Elf_Internal_Shdr
*symtab_hdr
;
7016 Elf_Internal_Sym
*local_syms
;
7018 struct _opd_sec_data
*opd
;
7019 bfd_boolean need_edit
, add_aux_fields
;
7020 bfd_size_type cnt_16b
= 0;
7022 if (!is_ppc64_elf (ibfd
))
7025 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7026 if (sec
== NULL
|| sec
->size
== 0)
7029 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
7032 if (sec
->output_section
== bfd_abs_section_ptr
)
7035 /* Look through the section relocs. */
7036 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7040 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7042 /* Read the relocations. */
7043 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7045 if (relstart
== NULL
)
7048 /* First run through the relocs to check they are sane, and to
7049 determine whether we need to edit this opd section. */
7053 relend
= relstart
+ sec
->reloc_count
;
7054 for (rel
= relstart
; rel
< relend
; )
7056 enum elf_ppc64_reloc_type r_type
;
7057 unsigned long r_symndx
;
7059 struct elf_link_hash_entry
*h
;
7060 Elf_Internal_Sym
*sym
;
7062 /* .opd contains a regular array of 16 or 24 byte entries. We're
7063 only interested in the reloc pointing to a function entry
7065 if (rel
->r_offset
!= offset
7066 || rel
+ 1 >= relend
7067 || (rel
+ 1)->r_offset
!= offset
+ 8)
7069 /* If someone messes with .opd alignment then after a
7070 "ld -r" we might have padding in the middle of .opd.
7071 Also, there's nothing to prevent someone putting
7072 something silly in .opd with the assembler. No .opd
7073 optimization for them! */
7075 (*_bfd_error_handler
)
7076 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7081 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7082 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7084 (*_bfd_error_handler
)
7085 (_("%B: unexpected reloc type %u in .opd section"),
7091 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7092 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7096 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7098 const char *sym_name
;
7100 sym_name
= h
->root
.root
.string
;
7102 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7105 (*_bfd_error_handler
)
7106 (_("%B: undefined sym `%s' in .opd section"),
7112 /* opd entries are always for functions defined in the
7113 current input bfd. If the symbol isn't defined in the
7114 input bfd, then we won't be using the function in this
7115 bfd; It must be defined in a linkonce section in another
7116 bfd, or is weak. It's also possible that we are
7117 discarding the function due to a linker script /DISCARD/,
7118 which we test for via the output_section. */
7119 if (sym_sec
->owner
!= ibfd
7120 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7125 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7127 if (sec
->size
== offset
+ 24)
7132 if (rel
== relend
&& sec
->size
== offset
+ 16)
7140 if (rel
->r_offset
== offset
+ 24)
7142 else if (rel
->r_offset
!= offset
+ 16)
7144 else if (rel
+ 1 < relend
7145 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7146 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7151 else if (rel
+ 2 < relend
7152 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7153 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7162 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7164 if (need_edit
|| add_aux_fields
)
7166 Elf_Internal_Rela
*write_rel
;
7167 Elf_Internal_Shdr
*rel_hdr
;
7168 bfd_byte
*rptr
, *wptr
;
7169 bfd_byte
*new_contents
;
7174 new_contents
= NULL
;
7175 amt
= sec
->size
* sizeof (long) / 8;
7176 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7177 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7178 if (opd
->adjust
== NULL
)
7180 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7182 /* This seems a waste of time as input .opd sections are all
7183 zeros as generated by gcc, but I suppose there's no reason
7184 this will always be so. We might start putting something in
7185 the third word of .opd entries. */
7186 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7189 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7194 if (local_syms
!= NULL
7195 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7197 if (elf_section_data (sec
)->relocs
!= relstart
)
7201 sec
->contents
= loc
;
7202 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7205 elf_section_data (sec
)->relocs
= relstart
;
7207 new_contents
= sec
->contents
;
7210 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7211 if (new_contents
== NULL
)
7215 wptr
= new_contents
;
7216 rptr
= sec
->contents
;
7218 write_rel
= relstart
;
7222 for (rel
= relstart
; rel
< relend
; rel
++)
7224 unsigned long r_symndx
;
7226 struct elf_link_hash_entry
*h
;
7227 Elf_Internal_Sym
*sym
;
7229 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7230 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7234 if (rel
->r_offset
== offset
)
7236 struct ppc_link_hash_entry
*fdh
= NULL
;
7238 /* See if the .opd entry is full 24 byte or
7239 16 byte (with fd_aux entry overlapped with next
7242 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7243 || (rel
+ 3 < relend
7244 && rel
[2].r_offset
== offset
+ 16
7245 && rel
[3].r_offset
== offset
+ 24
7246 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7247 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7251 && h
->root
.root
.string
[0] == '.')
7253 struct ppc_link_hash_table
*htab
;
7255 htab
= ppc_hash_table (info
);
7257 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7260 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7261 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7265 skip
= (sym_sec
->owner
!= ibfd
7266 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7269 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7271 /* Arrange for the function descriptor sym
7273 fdh
->elf
.root
.u
.def
.value
= 0;
7274 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7276 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7280 /* We'll be keeping this opd entry. */
7284 /* Redefine the function descriptor symbol to
7285 this location in the opd section. It is
7286 necessary to update the value here rather
7287 than using an array of adjustments as we do
7288 for local symbols, because various places
7289 in the generic ELF code use the value
7290 stored in u.def.value. */
7291 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7292 fdh
->adjust_done
= 1;
7295 /* Local syms are a bit tricky. We could
7296 tweak them as they can be cached, but
7297 we'd need to look through the local syms
7298 for the function descriptor sym which we
7299 don't have at the moment. So keep an
7300 array of adjustments. */
7301 opd
->adjust
[rel
->r_offset
/ 8]
7302 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7305 memcpy (wptr
, rptr
, opd_ent_size
);
7306 wptr
+= opd_ent_size
;
7307 if (add_aux_fields
&& opd_ent_size
== 16)
7309 memset (wptr
, '\0', 8);
7313 rptr
+= opd_ent_size
;
7314 offset
+= opd_ent_size
;
7320 && !info
->relocatable
7321 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7327 /* We need to adjust any reloc offsets to point to the
7328 new opd entries. While we're at it, we may as well
7329 remove redundant relocs. */
7330 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7331 if (write_rel
!= rel
)
7332 memcpy (write_rel
, rel
, sizeof (*rel
));
7337 sec
->size
= wptr
- new_contents
;
7338 sec
->reloc_count
= write_rel
- relstart
;
7341 free (sec
->contents
);
7342 sec
->contents
= new_contents
;
7345 /* Fudge the header size too, as this is used later in
7346 elf_bfd_final_link if we are emitting relocs. */
7347 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7348 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7351 else if (elf_section_data (sec
)->relocs
!= relstart
)
7354 if (local_syms
!= NULL
7355 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7357 if (!info
->keep_memory
)
7360 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7365 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7367 /* If we are doing a final link and the last .opd entry is just 16 byte
7368 long, add a 8 byte padding after it. */
7369 if (need_pad
!= NULL
&& !info
->relocatable
)
7373 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7375 BFD_ASSERT (need_pad
->size
> 0);
7377 p
= bfd_malloc (need_pad
->size
+ 8);
7381 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7382 p
, 0, need_pad
->size
))
7385 need_pad
->contents
= p
;
7386 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7390 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7394 need_pad
->contents
= p
;
7397 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7398 need_pad
->size
+= 8;
7404 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7407 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7408 int no_tls_get_addr_opt
,
7411 struct ppc_link_hash_table
*htab
;
7413 htab
= ppc_hash_table (info
);
7418 htab
->do_multi_toc
= 0;
7419 else if (!htab
->do_multi_toc
)
7422 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7423 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7424 FALSE
, FALSE
, TRUE
));
7425 /* Move dynamic linking info to the function descriptor sym. */
7426 if (htab
->tls_get_addr
!= NULL
)
7427 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7428 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7429 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7430 FALSE
, FALSE
, TRUE
));
7431 if (!no_tls_get_addr_opt
)
7433 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7435 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7436 FALSE
, FALSE
, TRUE
);
7438 func_desc_adjust (opt
, info
);
7439 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7440 FALSE
, FALSE
, TRUE
);
7442 && (opt_fd
->root
.type
== bfd_link_hash_defined
7443 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7445 /* If glibc supports an optimized __tls_get_addr call stub,
7446 signalled by the presence of __tls_get_addr_opt, and we'll
7447 be calling __tls_get_addr via a plt call stub, then
7448 make __tls_get_addr point to __tls_get_addr_opt. */
7449 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7450 if (htab
->elf
.dynamic_sections_created
7452 && (tga_fd
->type
== STT_FUNC
7453 || tga_fd
->needs_plt
)
7454 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7455 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7456 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7458 struct plt_entry
*ent
;
7460 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7461 if (ent
->plt
.refcount
> 0)
7465 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7466 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7467 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7468 if (opt_fd
->dynindx
!= -1)
7470 /* Use __tls_get_addr_opt in dynamic relocations. */
7471 opt_fd
->dynindx
= -1;
7472 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7473 opt_fd
->dynstr_index
);
7474 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7477 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7478 tga
= &htab
->tls_get_addr
->elf
;
7479 if (opt
!= NULL
&& tga
!= NULL
)
7481 tga
->root
.type
= bfd_link_hash_indirect
;
7482 tga
->root
.u
.i
.link
= &opt
->root
;
7483 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7484 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7486 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7488 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7489 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7490 if (htab
->tls_get_addr
!= NULL
)
7492 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7493 htab
->tls_get_addr
->is_func
= 1;
7499 no_tls_get_addr_opt
= TRUE
;
7501 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7502 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7505 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7509 branch_reloc_hash_match (const bfd
*ibfd
,
7510 const Elf_Internal_Rela
*rel
,
7511 const struct ppc_link_hash_entry
*hash1
,
7512 const struct ppc_link_hash_entry
*hash2
)
7514 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7515 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7516 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7518 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7520 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7521 struct elf_link_hash_entry
*h
;
7523 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7524 h
= elf_follow_link (h
);
7525 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7531 /* Run through all the TLS relocs looking for optimization
7532 opportunities. The linker has been hacked (see ppc64elf.em) to do
7533 a preliminary section layout so that we know the TLS segment
7534 offsets. We can't optimize earlier because some optimizations need
7535 to know the tp offset, and we need to optimize before allocating
7536 dynamic relocations. */
7539 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7543 struct ppc_link_hash_table
*htab
;
7544 unsigned char *toc_ref
;
7547 if (info
->relocatable
|| !info
->executable
)
7550 htab
= ppc_hash_table (info
);
7554 /* Make two passes over the relocs. On the first pass, mark toc
7555 entries involved with tls relocs, and check that tls relocs
7556 involved in setting up a tls_get_addr call are indeed followed by
7557 such a call. If they are not, we can't do any tls optimization.
7558 On the second pass twiddle tls_mask flags to notify
7559 relocate_section that optimization can be done, and adjust got
7560 and plt refcounts. */
7562 for (pass
= 0; pass
< 2; ++pass
)
7563 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7565 Elf_Internal_Sym
*locsyms
= NULL
;
7566 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7568 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7569 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7571 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7572 bfd_boolean found_tls_get_addr_arg
= 0;
7574 /* Read the relocations. */
7575 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7577 if (relstart
== NULL
)
7580 relend
= relstart
+ sec
->reloc_count
;
7581 for (rel
= relstart
; rel
< relend
; rel
++)
7583 enum elf_ppc64_reloc_type r_type
;
7584 unsigned long r_symndx
;
7585 struct elf_link_hash_entry
*h
;
7586 Elf_Internal_Sym
*sym
;
7588 unsigned char *tls_mask
;
7589 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7591 bfd_boolean ok_tprel
, is_local
;
7592 long toc_ref_index
= 0;
7593 int expecting_tls_get_addr
= 0;
7594 bfd_boolean ret
= FALSE
;
7596 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7597 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7601 if (elf_section_data (sec
)->relocs
!= relstart
)
7603 if (toc_ref
!= NULL
)
7606 && (elf_symtab_hdr (ibfd
).contents
7607 != (unsigned char *) locsyms
))
7614 if (h
->root
.type
== bfd_link_hash_defined
7615 || h
->root
.type
== bfd_link_hash_defweak
)
7616 value
= h
->root
.u
.def
.value
;
7617 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7621 found_tls_get_addr_arg
= 0;
7626 /* Symbols referenced by TLS relocs must be of type
7627 STT_TLS. So no need for .opd local sym adjust. */
7628 value
= sym
->st_value
;
7637 && h
->root
.type
== bfd_link_hash_undefweak
)
7641 value
+= sym_sec
->output_offset
;
7642 value
+= sym_sec
->output_section
->vma
;
7643 value
-= htab
->elf
.tls_sec
->vma
;
7644 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7645 < (bfd_vma
) 1 << 32);
7649 r_type
= ELF64_R_TYPE (rel
->r_info
);
7650 /* If this section has old-style __tls_get_addr calls
7651 without marker relocs, then check that each
7652 __tls_get_addr call reloc is preceded by a reloc
7653 that conceivably belongs to the __tls_get_addr arg
7654 setup insn. If we don't find matching arg setup
7655 relocs, don't do any tls optimization. */
7657 && sec
->has_tls_get_addr_call
7659 && (h
== &htab
->tls_get_addr
->elf
7660 || h
== &htab
->tls_get_addr_fd
->elf
)
7661 && !found_tls_get_addr_arg
7662 && is_branch_reloc (r_type
))
7664 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
7665 "TLS optimization disabled\n"),
7666 ibfd
, sec
, rel
->r_offset
);
7671 found_tls_get_addr_arg
= 0;
7674 case R_PPC64_GOT_TLSLD16
:
7675 case R_PPC64_GOT_TLSLD16_LO
:
7676 expecting_tls_get_addr
= 1;
7677 found_tls_get_addr_arg
= 1;
7680 case R_PPC64_GOT_TLSLD16_HI
:
7681 case R_PPC64_GOT_TLSLD16_HA
:
7682 /* These relocs should never be against a symbol
7683 defined in a shared lib. Leave them alone if
7684 that turns out to be the case. */
7691 tls_type
= TLS_TLS
| TLS_LD
;
7694 case R_PPC64_GOT_TLSGD16
:
7695 case R_PPC64_GOT_TLSGD16_LO
:
7696 expecting_tls_get_addr
= 1;
7697 found_tls_get_addr_arg
= 1;
7700 case R_PPC64_GOT_TLSGD16_HI
:
7701 case R_PPC64_GOT_TLSGD16_HA
:
7707 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7709 tls_type
= TLS_TLS
| TLS_GD
;
7712 case R_PPC64_GOT_TPREL16_DS
:
7713 case R_PPC64_GOT_TPREL16_LO_DS
:
7714 case R_PPC64_GOT_TPREL16_HI
:
7715 case R_PPC64_GOT_TPREL16_HA
:
7720 tls_clear
= TLS_TPREL
;
7721 tls_type
= TLS_TLS
| TLS_TPREL
;
7728 found_tls_get_addr_arg
= 1;
7733 case R_PPC64_TOC16_LO
:
7734 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7737 /* Mark this toc entry as referenced by a TLS
7738 code sequence. We can do that now in the
7739 case of R_PPC64_TLS, and after checking for
7740 tls_get_addr for the TOC16 relocs. */
7741 if (toc_ref
== NULL
)
7742 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7743 if (toc_ref
== NULL
)
7747 value
= h
->root
.u
.def
.value
;
7749 value
= sym
->st_value
;
7750 value
+= rel
->r_addend
;
7751 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7752 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7753 if (r_type
== R_PPC64_TLS
7754 || r_type
== R_PPC64_TLSGD
7755 || r_type
== R_PPC64_TLSLD
)
7757 toc_ref
[toc_ref_index
] = 1;
7761 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7766 expecting_tls_get_addr
= 2;
7769 case R_PPC64_TPREL64
:
7773 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7778 tls_set
= TLS_EXPLICIT
;
7779 tls_clear
= TLS_TPREL
;
7784 case R_PPC64_DTPMOD64
:
7788 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7790 if (rel
+ 1 < relend
7792 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7793 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7797 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7800 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7809 tls_set
= TLS_EXPLICIT
;
7820 if (!expecting_tls_get_addr
7821 || !sec
->has_tls_get_addr_call
)
7824 if (rel
+ 1 < relend
7825 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7827 htab
->tls_get_addr_fd
))
7829 if (expecting_tls_get_addr
== 2)
7831 /* Check for toc tls entries. */
7832 unsigned char *toc_tls
;
7835 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7840 if (toc_tls
!= NULL
)
7842 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
7843 found_tls_get_addr_arg
= 1;
7845 toc_ref
[toc_ref_index
] = 1;
7851 if (expecting_tls_get_addr
!= 1)
7854 /* Uh oh, we didn't find the expected call. We
7855 could just mark this symbol to exclude it
7856 from tls optimization but it's safer to skip
7857 the entire optimization. */
7858 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
7859 "TLS optimization disabled\n"),
7860 ibfd
, sec
, rel
->r_offset
);
7865 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7867 struct plt_entry
*ent
;
7868 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7871 if (ent
->addend
== 0)
7873 if (ent
->plt
.refcount
> 0)
7875 ent
->plt
.refcount
-= 1;
7876 expecting_tls_get_addr
= 0;
7882 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7884 struct plt_entry
*ent
;
7885 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7888 if (ent
->addend
== 0)
7890 if (ent
->plt
.refcount
> 0)
7891 ent
->plt
.refcount
-= 1;
7899 if ((tls_set
& TLS_EXPLICIT
) == 0)
7901 struct got_entry
*ent
;
7903 /* Adjust got entry for this reloc. */
7907 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7909 for (; ent
!= NULL
; ent
= ent
->next
)
7910 if (ent
->addend
== rel
->r_addend
7911 && ent
->owner
== ibfd
7912 && ent
->tls_type
== tls_type
)
7919 /* We managed to get rid of a got entry. */
7920 if (ent
->got
.refcount
> 0)
7921 ent
->got
.refcount
-= 1;
7926 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7927 we'll lose one or two dyn relocs. */
7928 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7932 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7934 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7940 *tls_mask
|= tls_set
;
7941 *tls_mask
&= ~tls_clear
;
7944 if (elf_section_data (sec
)->relocs
!= relstart
)
7949 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7951 if (!info
->keep_memory
)
7954 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7958 if (toc_ref
!= NULL
)
7963 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7964 the values of any global symbols in a toc section that has been
7965 edited. Globals in toc sections should be a rarity, so this function
7966 sets a flag if any are found in toc sections other than the one just
7967 edited, so that futher hash table traversals can be avoided. */
7969 struct adjust_toc_info
7972 unsigned long *skip
;
7973 bfd_boolean global_toc_syms
;
7976 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7979 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7981 struct ppc_link_hash_entry
*eh
;
7982 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7985 if (h
->root
.type
!= bfd_link_hash_defined
7986 && h
->root
.type
!= bfd_link_hash_defweak
)
7989 eh
= (struct ppc_link_hash_entry
*) h
;
7990 if (eh
->adjust_done
)
7993 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7995 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7996 i
= toc_inf
->toc
->rawsize
>> 3;
7998 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8000 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8002 (*_bfd_error_handler
)
8003 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8006 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8007 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8010 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8011 eh
->adjust_done
= 1;
8013 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8014 toc_inf
->global_toc_syms
= TRUE
;
8019 /* Examine all relocs referencing .toc sections in order to remove
8020 unused .toc entries. */
8023 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8026 struct adjust_toc_info toc_inf
;
8027 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8029 htab
->do_toc_opt
= 1;
8030 toc_inf
.global_toc_syms
= TRUE
;
8031 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8033 asection
*toc
, *sec
;
8034 Elf_Internal_Shdr
*symtab_hdr
;
8035 Elf_Internal_Sym
*local_syms
;
8036 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8037 unsigned long *skip
, *drop
;
8038 unsigned char *used
;
8039 unsigned char *keep
, last
, some_unused
;
8041 if (!is_ppc64_elf (ibfd
))
8044 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8047 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
8048 || elf_discarded_section (toc
))
8053 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8055 /* Look at sections dropped from the final link. */
8058 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8060 if (sec
->reloc_count
== 0
8061 || !elf_discarded_section (sec
)
8062 || get_opd_info (sec
)
8063 || (sec
->flags
& SEC_ALLOC
) == 0
8064 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8067 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8068 if (relstart
== NULL
)
8071 /* Run through the relocs to see which toc entries might be
8073 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8075 enum elf_ppc64_reloc_type r_type
;
8076 unsigned long r_symndx
;
8078 struct elf_link_hash_entry
*h
;
8079 Elf_Internal_Sym
*sym
;
8082 r_type
= ELF64_R_TYPE (rel
->r_info
);
8089 case R_PPC64_TOC16_LO
:
8090 case R_PPC64_TOC16_HI
:
8091 case R_PPC64_TOC16_HA
:
8092 case R_PPC64_TOC16_DS
:
8093 case R_PPC64_TOC16_LO_DS
:
8097 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8098 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8106 val
= h
->root
.u
.def
.value
;
8108 val
= sym
->st_value
;
8109 val
+= rel
->r_addend
;
8111 if (val
>= toc
->size
)
8114 /* Anything in the toc ought to be aligned to 8 bytes.
8115 If not, don't mark as unused. */
8121 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8126 skip
[val
>> 3] = ref_from_discarded
;
8129 if (elf_section_data (sec
)->relocs
!= relstart
)
8133 /* For largetoc loads of address constants, we can convert
8134 . addis rx,2,addr@got@ha
8135 . ld ry,addr@got@l(rx)
8137 . addis rx,2,addr@toc@ha
8138 . addi ry,rx,addr@toc@l
8139 when addr is within 2G of the toc pointer. This then means
8140 that the word storing "addr" in the toc is no longer needed. */
8142 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8143 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8144 && toc
->reloc_count
!= 0)
8146 /* Read toc relocs. */
8147 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8149 if (toc_relocs
== NULL
)
8152 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8154 enum elf_ppc64_reloc_type r_type
;
8155 unsigned long r_symndx
;
8157 struct elf_link_hash_entry
*h
;
8158 Elf_Internal_Sym
*sym
;
8161 r_type
= ELF64_R_TYPE (rel
->r_info
);
8162 if (r_type
!= R_PPC64_ADDR64
)
8165 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8166 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8171 || elf_discarded_section (sym_sec
))
8174 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8179 if (h
->type
== STT_GNU_IFUNC
)
8181 val
= h
->root
.u
.def
.value
;
8185 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8187 val
= sym
->st_value
;
8189 val
+= rel
->r_addend
;
8190 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8192 /* We don't yet know the exact toc pointer value, but we
8193 know it will be somewhere in the toc section. Don't
8194 optimize if the difference from any possible toc
8195 pointer is outside [ff..f80008000, 7fff7fff]. */
8196 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8197 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8200 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8201 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8206 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8211 skip
[rel
->r_offset
>> 3]
8212 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8219 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8223 if (local_syms
!= NULL
8224 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8228 && elf_section_data (sec
)->relocs
!= relstart
)
8230 if (toc_relocs
!= NULL
8231 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8238 /* Now check all kept sections that might reference the toc.
8239 Check the toc itself last. */
8240 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8243 sec
= (sec
== toc
? NULL
8244 : sec
->next
== NULL
? toc
8245 : sec
->next
== toc
&& toc
->next
? toc
->next
8250 if (sec
->reloc_count
== 0
8251 || elf_discarded_section (sec
)
8252 || get_opd_info (sec
)
8253 || (sec
->flags
& SEC_ALLOC
) == 0
8254 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8257 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8259 if (relstart
== NULL
)
8262 /* Mark toc entries referenced as used. */
8265 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8267 enum elf_ppc64_reloc_type r_type
;
8268 unsigned long r_symndx
;
8270 struct elf_link_hash_entry
*h
;
8271 Elf_Internal_Sym
*sym
;
8274 r_type
= ELF64_R_TYPE (rel
->r_info
);
8280 case R_PPC64_GOT_TLSLD16_HA
:
8281 case R_PPC64_GOT_TLSGD16_HA
:
8282 case R_PPC64_GOT_TPREL16_HA
:
8283 case R_PPC64_GOT_DTPREL16_HA
:
8284 case R_PPC64_GOT16_HA
:
8285 case R_PPC64_TOC16_HA
:
8287 bfd_vma off
= rel
->r_offset
& ~3;
8288 unsigned char buf
[4];
8291 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8296 insn
= bfd_get_32 (ibfd
, buf
);
8297 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8298 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8299 ppc64_elf_tdata (ibfd
)->ha_relocs_not_using_r2
= 1;
8307 case R_PPC64_TOC16_LO
:
8308 case R_PPC64_TOC16_HI
:
8309 case R_PPC64_TOC16_HA
:
8310 case R_PPC64_TOC16_DS
:
8311 case R_PPC64_TOC16_LO_DS
:
8312 /* In case we're taking addresses of toc entries. */
8313 case R_PPC64_ADDR64
:
8320 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8321 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8332 val
= h
->root
.u
.def
.value
;
8334 val
= sym
->st_value
;
8335 val
+= rel
->r_addend
;
8337 if (val
>= toc
->size
)
8340 if ((skip
[val
>> 3] & can_optimize
) != 0)
8347 case R_PPC64_TOC16_HA
:
8350 case R_PPC64_TOC16_LO_DS
:
8351 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8352 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8357 if ((opc
& (0x3f << 2)) == (58u << 2))
8362 /* Wrong sort of reloc, or not a ld. We may
8363 as well clear ref_from_discarded too. */
8368 /* For the toc section, we only mark as used if
8369 this entry itself isn't unused. */
8372 && (used
[rel
->r_offset
>> 3]
8373 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8374 /* Do all the relocs again, to catch reference
8382 if (elf_section_data (sec
)->relocs
!= relstart
)
8386 /* Merge the used and skip arrays. Assume that TOC
8387 doublewords not appearing as either used or unused belong
8388 to to an entry more than one doubleword in size. */
8389 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8390 drop
< skip
+ (toc
->size
+ 7) / 8;
8395 *drop
&= ~ref_from_discarded
;
8396 if ((*drop
& can_optimize
) != 0)
8400 else if ((*drop
& ref_from_discarded
) != 0)
8403 last
= ref_from_discarded
;
8413 bfd_byte
*contents
, *src
;
8415 Elf_Internal_Sym
*sym
;
8416 bfd_boolean local_toc_syms
= FALSE
;
8418 /* Shuffle the toc contents, and at the same time convert the
8419 skip array from booleans into offsets. */
8420 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8423 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8425 for (src
= contents
, off
= 0, drop
= skip
;
8426 src
< contents
+ toc
->size
;
8429 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8434 memcpy (src
- off
, src
, 8);
8438 toc
->rawsize
= toc
->size
;
8439 toc
->size
= src
- contents
- off
;
8441 /* Adjust addends for relocs against the toc section sym,
8442 and optimize any accesses we can. */
8443 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8445 if (sec
->reloc_count
== 0
8446 || elf_discarded_section (sec
))
8449 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8451 if (relstart
== NULL
)
8454 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8456 enum elf_ppc64_reloc_type r_type
;
8457 unsigned long r_symndx
;
8459 struct elf_link_hash_entry
*h
;
8462 r_type
= ELF64_R_TYPE (rel
->r_info
);
8469 case R_PPC64_TOC16_LO
:
8470 case R_PPC64_TOC16_HI
:
8471 case R_PPC64_TOC16_HA
:
8472 case R_PPC64_TOC16_DS
:
8473 case R_PPC64_TOC16_LO_DS
:
8474 case R_PPC64_ADDR64
:
8478 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8479 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8487 val
= h
->root
.u
.def
.value
;
8490 val
= sym
->st_value
;
8492 local_toc_syms
= TRUE
;
8495 val
+= rel
->r_addend
;
8497 if (val
> toc
->rawsize
)
8499 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8501 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8503 Elf_Internal_Rela
*tocrel
8504 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8505 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8509 case R_PPC64_TOC16_HA
:
8510 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8513 case R_PPC64_TOC16_LO_DS
:
8514 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8518 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
8520 info
->callbacks
->einfo
8521 (_("%P: %H: %s relocation references "
8522 "optimized away TOC entry\n"),
8523 ibfd
, sec
, rel
->r_offset
,
8524 ppc64_elf_howto_table
[r_type
]->name
);
8525 bfd_set_error (bfd_error_bad_value
);
8528 rel
->r_addend
= tocrel
->r_addend
;
8529 elf_section_data (sec
)->relocs
= relstart
;
8533 if (h
!= NULL
|| sym
->st_value
!= 0)
8536 rel
->r_addend
-= skip
[val
>> 3];
8537 elf_section_data (sec
)->relocs
= relstart
;
8540 if (elf_section_data (sec
)->relocs
!= relstart
)
8544 /* We shouldn't have local or global symbols defined in the TOC,
8545 but handle them anyway. */
8546 if (local_syms
!= NULL
)
8547 for (sym
= local_syms
;
8548 sym
< local_syms
+ symtab_hdr
->sh_info
;
8550 if (sym
->st_value
!= 0
8551 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8555 if (sym
->st_value
> toc
->rawsize
)
8556 i
= toc
->rawsize
>> 3;
8558 i
= sym
->st_value
>> 3;
8560 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8563 (*_bfd_error_handler
)
8564 (_("%s defined on removed toc entry"),
8565 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8568 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8569 sym
->st_value
= (bfd_vma
) i
<< 3;
8572 sym
->st_value
-= skip
[i
];
8573 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8576 /* Adjust any global syms defined in this toc input section. */
8577 if (toc_inf
.global_toc_syms
)
8580 toc_inf
.skip
= skip
;
8581 toc_inf
.global_toc_syms
= FALSE
;
8582 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8586 if (toc
->reloc_count
!= 0)
8588 Elf_Internal_Shdr
*rel_hdr
;
8589 Elf_Internal_Rela
*wrel
;
8592 /* Remove unused toc relocs, and adjust those we keep. */
8593 if (toc_relocs
== NULL
)
8594 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8596 if (toc_relocs
== NULL
)
8600 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8601 if ((skip
[rel
->r_offset
>> 3]
8602 & (ref_from_discarded
| can_optimize
)) == 0)
8604 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8605 wrel
->r_info
= rel
->r_info
;
8606 wrel
->r_addend
= rel
->r_addend
;
8609 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8610 &local_syms
, NULL
, NULL
))
8613 elf_section_data (toc
)->relocs
= toc_relocs
;
8614 toc
->reloc_count
= wrel
- toc_relocs
;
8615 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8616 sz
= rel_hdr
->sh_entsize
;
8617 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8620 else if (toc_relocs
!= NULL
8621 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8624 if (local_syms
!= NULL
8625 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8627 if (!info
->keep_memory
)
8630 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8638 /* Return true iff input section I references the TOC using
8639 instructions limited to +/-32k offsets. */
8642 ppc64_elf_has_small_toc_reloc (asection
*i
)
8644 return (is_ppc64_elf (i
->owner
)
8645 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8648 /* Allocate space for one GOT entry. */
8651 allocate_got (struct elf_link_hash_entry
*h
,
8652 struct bfd_link_info
*info
,
8653 struct got_entry
*gent
)
8655 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8657 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8658 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8660 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8661 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8662 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8664 gent
->got
.offset
= got
->size
;
8665 got
->size
+= entsize
;
8667 dyn
= htab
->elf
.dynamic_sections_created
;
8669 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8670 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8671 || h
->root
.type
!= bfd_link_hash_undefweak
))
8673 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8674 relgot
->size
+= rentsize
;
8676 else if (h
->type
== STT_GNU_IFUNC
)
8678 asection
*relgot
= htab
->reliplt
;
8679 relgot
->size
+= rentsize
;
8680 htab
->got_reli_size
+= rentsize
;
8684 /* This function merges got entries in the same toc group. */
8687 merge_got_entries (struct got_entry
**pent
)
8689 struct got_entry
*ent
, *ent2
;
8691 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8692 if (!ent
->is_indirect
)
8693 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8694 if (!ent2
->is_indirect
8695 && ent2
->addend
== ent
->addend
8696 && ent2
->tls_type
== ent
->tls_type
8697 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8699 ent2
->is_indirect
= TRUE
;
8700 ent2
->got
.ent
= ent
;
8704 /* Allocate space in .plt, .got and associated reloc sections for
8708 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8710 struct bfd_link_info
*info
;
8711 struct ppc_link_hash_table
*htab
;
8713 struct ppc_link_hash_entry
*eh
;
8714 struct elf_dyn_relocs
*p
;
8715 struct got_entry
**pgent
, *gent
;
8717 if (h
->root
.type
== bfd_link_hash_indirect
)
8720 info
= (struct bfd_link_info
*) inf
;
8721 htab
= ppc_hash_table (info
);
8725 if ((htab
->elf
.dynamic_sections_created
8727 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8728 || h
->type
== STT_GNU_IFUNC
)
8730 struct plt_entry
*pent
;
8731 bfd_boolean doneone
= FALSE
;
8732 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8733 if (pent
->plt
.refcount
> 0)
8735 if (!htab
->elf
.dynamic_sections_created
8736 || h
->dynindx
== -1)
8739 pent
->plt
.offset
= s
->size
;
8740 s
->size
+= PLT_ENTRY_SIZE
;
8745 /* If this is the first .plt entry, make room for the special
8749 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8751 pent
->plt
.offset
= s
->size
;
8753 /* Make room for this entry. */
8754 s
->size
+= PLT_ENTRY_SIZE
;
8756 /* Make room for the .glink code. */
8759 s
->size
+= GLINK_CALL_STUB_SIZE
;
8760 /* We need bigger stubs past index 32767. */
8761 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8765 /* We also need to make an entry in the .rela.plt section. */
8768 s
->size
+= sizeof (Elf64_External_Rela
);
8772 pent
->plt
.offset
= (bfd_vma
) -1;
8775 h
->plt
.plist
= NULL
;
8781 h
->plt
.plist
= NULL
;
8785 eh
= (struct ppc_link_hash_entry
*) h
;
8786 /* Run through the TLS GD got entries first if we're changing them
8788 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8789 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8790 if (gent
->got
.refcount
> 0
8791 && (gent
->tls_type
& TLS_GD
) != 0)
8793 /* This was a GD entry that has been converted to TPREL. If
8794 there happens to be a TPREL entry we can use that one. */
8795 struct got_entry
*ent
;
8796 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8797 if (ent
->got
.refcount
> 0
8798 && (ent
->tls_type
& TLS_TPREL
) != 0
8799 && ent
->addend
== gent
->addend
8800 && ent
->owner
== gent
->owner
)
8802 gent
->got
.refcount
= 0;
8806 /* If not, then we'll be using our own TPREL entry. */
8807 if (gent
->got
.refcount
!= 0)
8808 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8811 /* Remove any list entry that won't generate a word in the GOT before
8812 we call merge_got_entries. Otherwise we risk merging to empty
8814 pgent
= &h
->got
.glist
;
8815 while ((gent
= *pgent
) != NULL
)
8816 if (gent
->got
.refcount
> 0)
8818 if ((gent
->tls_type
& TLS_LD
) != 0
8821 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8822 *pgent
= gent
->next
;
8825 pgent
= &gent
->next
;
8828 *pgent
= gent
->next
;
8830 if (!htab
->do_multi_toc
)
8831 merge_got_entries (&h
->got
.glist
);
8833 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8834 if (!gent
->is_indirect
)
8836 /* Make sure this symbol is output as a dynamic symbol.
8837 Undefined weak syms won't yet be marked as dynamic,
8838 nor will all TLS symbols. */
8839 if (h
->dynindx
== -1
8841 && h
->type
!= STT_GNU_IFUNC
8842 && htab
->elf
.dynamic_sections_created
)
8844 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8848 if (!is_ppc64_elf (gent
->owner
))
8851 allocate_got (h
, info
, gent
);
8854 if (eh
->dyn_relocs
== NULL
8855 || (!htab
->elf
.dynamic_sections_created
8856 && h
->type
!= STT_GNU_IFUNC
))
8859 /* In the shared -Bsymbolic case, discard space allocated for
8860 dynamic pc-relative relocs against symbols which turn out to be
8861 defined in regular objects. For the normal shared case, discard
8862 space for relocs that have become local due to symbol visibility
8867 /* Relocs that use pc_count are those that appear on a call insn,
8868 or certain REL relocs (see must_be_dyn_reloc) that can be
8869 generated via assembly. We want calls to protected symbols to
8870 resolve directly to the function rather than going via the plt.
8871 If people want function pointer comparisons to work as expected
8872 then they should avoid writing weird assembly. */
8873 if (SYMBOL_CALLS_LOCAL (info
, h
))
8875 struct elf_dyn_relocs
**pp
;
8877 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8879 p
->count
-= p
->pc_count
;
8888 /* Also discard relocs on undefined weak syms with non-default
8890 if (eh
->dyn_relocs
!= NULL
8891 && h
->root
.type
== bfd_link_hash_undefweak
)
8893 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8894 eh
->dyn_relocs
= NULL
;
8896 /* Make sure this symbol is output as a dynamic symbol.
8897 Undefined weak syms won't yet be marked as dynamic. */
8898 else if (h
->dynindx
== -1
8899 && !h
->forced_local
)
8901 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8906 else if (h
->type
== STT_GNU_IFUNC
)
8908 if (!h
->non_got_ref
)
8909 eh
->dyn_relocs
= NULL
;
8911 else if (ELIMINATE_COPY_RELOCS
)
8913 /* For the non-shared case, discard space for relocs against
8914 symbols which turn out to need copy relocs or are not
8920 /* Make sure this symbol is output as a dynamic symbol.
8921 Undefined weak syms won't yet be marked as dynamic. */
8922 if (h
->dynindx
== -1
8923 && !h
->forced_local
)
8925 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8929 /* If that succeeded, we know we'll be keeping all the
8931 if (h
->dynindx
!= -1)
8935 eh
->dyn_relocs
= NULL
;
8940 /* Finally, allocate space. */
8941 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8943 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8944 if (!htab
->elf
.dynamic_sections_created
)
8945 sreloc
= htab
->reliplt
;
8946 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8952 /* Find any dynamic relocs that apply to read-only sections. */
8955 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8957 struct ppc_link_hash_entry
*eh
;
8958 struct elf_dyn_relocs
*p
;
8960 eh
= (struct ppc_link_hash_entry
*) h
;
8961 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8963 asection
*s
= p
->sec
->output_section
;
8965 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8967 struct bfd_link_info
*info
= inf
;
8969 info
->flags
|= DF_TEXTREL
;
8971 /* Not an error, just cut short the traversal. */
8978 /* Set the sizes of the dynamic sections. */
8981 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8982 struct bfd_link_info
*info
)
8984 struct ppc_link_hash_table
*htab
;
8989 struct got_entry
*first_tlsld
;
8991 htab
= ppc_hash_table (info
);
8995 dynobj
= htab
->elf
.dynobj
;
8999 if (htab
->elf
.dynamic_sections_created
)
9001 /* Set the contents of the .interp section to the interpreter. */
9002 if (info
->executable
)
9004 s
= bfd_get_section_by_name (dynobj
, ".interp");
9007 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9008 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9012 /* Set up .got offsets for local syms, and space for local dynamic
9014 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9016 struct got_entry
**lgot_ents
;
9017 struct got_entry
**end_lgot_ents
;
9018 struct plt_entry
**local_plt
;
9019 struct plt_entry
**end_local_plt
;
9020 unsigned char *lgot_masks
;
9021 bfd_size_type locsymcount
;
9022 Elf_Internal_Shdr
*symtab_hdr
;
9025 if (!is_ppc64_elf (ibfd
))
9028 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9030 struct elf_dyn_relocs
*p
;
9032 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9034 if (!bfd_is_abs_section (p
->sec
)
9035 && bfd_is_abs_section (p
->sec
->output_section
))
9037 /* Input section has been discarded, either because
9038 it is a copy of a linkonce section or due to
9039 linker script /DISCARD/, so we'll be discarding
9042 else if (p
->count
!= 0)
9044 srel
= elf_section_data (p
->sec
)->sreloc
;
9045 if (!htab
->elf
.dynamic_sections_created
)
9046 srel
= htab
->reliplt
;
9047 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9048 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9049 info
->flags
|= DF_TEXTREL
;
9054 lgot_ents
= elf_local_got_ents (ibfd
);
9058 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9059 locsymcount
= symtab_hdr
->sh_info
;
9060 end_lgot_ents
= lgot_ents
+ locsymcount
;
9061 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9062 end_local_plt
= local_plt
+ locsymcount
;
9063 lgot_masks
= (unsigned char *) end_local_plt
;
9064 s
= ppc64_elf_tdata (ibfd
)->got
;
9065 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9066 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9068 struct got_entry
**pent
, *ent
;
9071 while ((ent
= *pent
) != NULL
)
9072 if (ent
->got
.refcount
> 0)
9074 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9076 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9081 unsigned int num
= 1;
9082 ent
->got
.offset
= s
->size
;
9083 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9087 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
9088 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
9091 += num
* sizeof (Elf64_External_Rela
);
9093 += num
* sizeof (Elf64_External_Rela
);
9102 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9103 for (; local_plt
< end_local_plt
; ++local_plt
)
9105 struct plt_entry
*ent
;
9107 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9108 if (ent
->plt
.refcount
> 0)
9111 ent
->plt
.offset
= s
->size
;
9112 s
->size
+= PLT_ENTRY_SIZE
;
9114 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
9117 ent
->plt
.offset
= (bfd_vma
) -1;
9121 /* Allocate global sym .plt and .got entries, and space for global
9122 sym dynamic relocs. */
9123 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9126 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9128 struct got_entry
*ent
;
9130 if (!is_ppc64_elf (ibfd
))
9133 ent
= ppc64_tlsld_got (ibfd
);
9134 if (ent
->got
.refcount
> 0)
9136 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9138 ent
->is_indirect
= TRUE
;
9139 ent
->got
.ent
= first_tlsld
;
9143 if (first_tlsld
== NULL
)
9145 s
= ppc64_elf_tdata (ibfd
)->got
;
9146 ent
->got
.offset
= s
->size
;
9151 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9152 srel
->size
+= sizeof (Elf64_External_Rela
);
9157 ent
->got
.offset
= (bfd_vma
) -1;
9160 /* We now have determined the sizes of the various dynamic sections.
9161 Allocate memory for them. */
9163 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9165 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9168 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9169 /* These haven't been allocated yet; don't strip. */
9171 else if (s
== htab
->got
9175 || s
== htab
->dynbss
)
9177 /* Strip this section if we don't need it; see the
9180 else if (s
== htab
->glink_eh_frame
)
9182 if (!bfd_is_abs_section (s
->output_section
))
9183 /* Not sized yet. */
9186 else if (CONST_STRNEQ (s
->name
, ".rela"))
9190 if (s
!= htab
->relplt
)
9193 /* We use the reloc_count field as a counter if we need
9194 to copy relocs into the output file. */
9200 /* It's not one of our sections, so don't allocate space. */
9206 /* If we don't need this section, strip it from the
9207 output file. This is mostly to handle .rela.bss and
9208 .rela.plt. We must create both sections in
9209 create_dynamic_sections, because they must be created
9210 before the linker maps input sections to output
9211 sections. The linker does that before
9212 adjust_dynamic_symbol is called, and it is that
9213 function which decides whether anything needs to go
9214 into these sections. */
9215 s
->flags
|= SEC_EXCLUDE
;
9219 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9222 /* Allocate memory for the section contents. We use bfd_zalloc
9223 here in case unused entries are not reclaimed before the
9224 section's contents are written out. This should not happen,
9225 but this way if it does we get a R_PPC64_NONE reloc in .rela
9226 sections instead of garbage.
9227 We also rely on the section contents being zero when writing
9229 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9230 if (s
->contents
== NULL
)
9234 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9236 if (!is_ppc64_elf (ibfd
))
9239 s
= ppc64_elf_tdata (ibfd
)->got
;
9240 if (s
!= NULL
&& s
!= htab
->got
)
9243 s
->flags
|= SEC_EXCLUDE
;
9246 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9247 if (s
->contents
== NULL
)
9251 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9255 s
->flags
|= SEC_EXCLUDE
;
9258 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9259 if (s
->contents
== NULL
)
9267 if (htab
->elf
.dynamic_sections_created
)
9269 /* Add some entries to the .dynamic section. We fill in the
9270 values later, in ppc64_elf_finish_dynamic_sections, but we
9271 must add the entries now so that we get the correct size for
9272 the .dynamic section. The DT_DEBUG entry is filled in by the
9273 dynamic linker and used by the debugger. */
9274 #define add_dynamic_entry(TAG, VAL) \
9275 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9277 if (info
->executable
)
9279 if (!add_dynamic_entry (DT_DEBUG
, 0))
9283 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9285 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9286 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9287 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9288 || !add_dynamic_entry (DT_JMPREL
, 0)
9289 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9295 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9296 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9300 if (!htab
->no_tls_get_addr_opt
9301 && htab
->tls_get_addr_fd
!= NULL
9302 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9303 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9308 if (!add_dynamic_entry (DT_RELA
, 0)
9309 || !add_dynamic_entry (DT_RELASZ
, 0)
9310 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9313 /* If any dynamic relocs apply to a read-only section,
9314 then we need a DT_TEXTREL entry. */
9315 if ((info
->flags
& DF_TEXTREL
) == 0)
9316 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9318 if ((info
->flags
& DF_TEXTREL
) != 0)
9320 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9325 #undef add_dynamic_entry
9330 /* Determine the type of stub needed, if any, for a call. */
9332 static inline enum ppc_stub_type
9333 ppc_type_of_stub (asection
*input_sec
,
9334 const Elf_Internal_Rela
*rel
,
9335 struct ppc_link_hash_entry
**hash
,
9336 struct plt_entry
**plt_ent
,
9337 bfd_vma destination
)
9339 struct ppc_link_hash_entry
*h
= *hash
;
9341 bfd_vma branch_offset
;
9342 bfd_vma max_branch_offset
;
9343 enum elf_ppc64_reloc_type r_type
;
9347 struct plt_entry
*ent
;
9348 struct ppc_link_hash_entry
*fdh
= h
;
9350 && h
->oh
->is_func_descriptor
)
9352 fdh
= ppc_follow_link (h
->oh
);
9356 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9357 if (ent
->addend
== rel
->r_addend
9358 && ent
->plt
.offset
!= (bfd_vma
) -1)
9361 return ppc_stub_plt_call
;
9364 /* Here, we know we don't have a plt entry. If we don't have a
9365 either a defined function descriptor or a defined entry symbol
9366 in a regular object file, then it is pointless trying to make
9367 any other type of stub. */
9368 if (!is_static_defined (&fdh
->elf
)
9369 && !is_static_defined (&h
->elf
))
9370 return ppc_stub_none
;
9372 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9374 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9375 struct plt_entry
**local_plt
= (struct plt_entry
**)
9376 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9377 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9379 if (local_plt
[r_symndx
] != NULL
)
9381 struct plt_entry
*ent
;
9383 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9384 if (ent
->addend
== rel
->r_addend
9385 && ent
->plt
.offset
!= (bfd_vma
) -1)
9388 return ppc_stub_plt_call
;
9393 /* Determine where the call point is. */
9394 location
= (input_sec
->output_offset
9395 + input_sec
->output_section
->vma
9398 branch_offset
= destination
- location
;
9399 r_type
= ELF64_R_TYPE (rel
->r_info
);
9401 /* Determine if a long branch stub is needed. */
9402 max_branch_offset
= 1 << 25;
9403 if (r_type
!= R_PPC64_REL24
)
9404 max_branch_offset
= 1 << 15;
9406 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9407 /* We need a stub. Figure out whether a long_branch or plt_branch
9409 return ppc_stub_long_branch
;
9411 return ppc_stub_none
;
9414 /* Build a .plt call stub. */
9416 static inline bfd_byte
*
9417 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
,
9418 bfd_boolean plt_static_chain
)
9420 #define PPC_LO(v) ((v) & 0xffff)
9421 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9422 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9424 if (PPC_HA (offset
) != 0)
9429 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9430 r
[1].r_offset
= r
[0].r_offset
+ 4;
9431 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9432 r
[1].r_addend
= r
[0].r_addend
;
9433 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9435 r
[2].r_offset
= r
[1].r_offset
+ 4;
9436 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9437 r
[2].r_addend
= r
[0].r_addend
;
9441 r
[2].r_offset
= r
[1].r_offset
+ 8;
9442 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9443 r
[2].r_addend
= r
[0].r_addend
+ 8;
9444 if (plt_static_chain
)
9446 r
[3].r_offset
= r
[2].r_offset
+ 4;
9447 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9448 r
[3].r_addend
= r
[0].r_addend
+ 16;
9452 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9453 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9454 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9455 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9457 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9460 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9461 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9462 if (plt_static_chain
)
9463 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9464 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9471 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9472 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9474 r
[1].r_offset
= r
[0].r_offset
+ 4;
9475 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9476 r
[1].r_addend
= r
[0].r_addend
;
9480 r
[1].r_offset
= r
[0].r_offset
+ 8;
9481 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9482 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
9483 if (plt_static_chain
)
9485 r
[2].r_offset
= r
[1].r_offset
+ 4;
9486 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9487 r
[2].r_addend
= r
[0].r_addend
+ 8;
9491 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9492 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9493 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9495 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9498 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9499 if (plt_static_chain
)
9500 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9501 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9502 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9507 /* Build a special .plt call stub for __tls_get_addr. */
9509 #define LD_R11_0R3 0xe9630000
9510 #define LD_R12_0R3 0xe9830000
9511 #define MR_R0_R3 0x7c601b78
9512 #define CMPDI_R11_0 0x2c2b0000
9513 #define ADD_R3_R12_R13 0x7c6c6a14
9514 #define BEQLR 0x4d820020
9515 #define MR_R3_R0 0x7c030378
9516 #define MFLR_R11 0x7d6802a6
9517 #define STD_R11_0R1 0xf9610000
9518 #define BCTRL 0x4e800421
9519 #define LD_R11_0R1 0xe9610000
9520 #define LD_R2_0R1 0xe8410000
9521 #define MTLR_R11 0x7d6803a6
9523 static inline bfd_byte
*
9524 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9525 Elf_Internal_Rela
*r
, bfd_boolean plt_static_chain
)
9527 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9528 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9529 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9530 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9531 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9532 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9533 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9534 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9535 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9538 r
[0].r_offset
+= 9 * 4;
9539 p
= build_plt_stub (obfd
, p
, offset
, r
, plt_static_chain
);
9540 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9542 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9543 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9544 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9545 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9550 static Elf_Internal_Rela
*
9551 get_relocs (asection
*sec
, int count
)
9553 Elf_Internal_Rela
*relocs
;
9554 struct bfd_elf_section_data
*elfsec_data
;
9556 elfsec_data
= elf_section_data (sec
);
9557 relocs
= elfsec_data
->relocs
;
9560 bfd_size_type relsize
;
9561 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9562 relocs
= bfd_alloc (sec
->owner
, relsize
);
9565 elfsec_data
->relocs
= relocs
;
9566 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9567 sizeof (Elf_Internal_Shdr
));
9568 if (elfsec_data
->rela
.hdr
== NULL
)
9570 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9571 * sizeof (Elf64_External_Rela
));
9572 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9573 sec
->reloc_count
= 0;
9575 relocs
+= sec
->reloc_count
;
9576 sec
->reloc_count
+= count
;
9581 get_r2off (struct bfd_link_info
*info
,
9582 struct ppc_stub_hash_entry
*stub_entry
)
9584 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9585 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9589 /* Support linking -R objects. Get the toc pointer from the
9592 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9593 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9595 if (strcmp (opd
->name
, ".opd") != 0
9596 || opd
->reloc_count
!= 0)
9598 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for %s\n"),
9599 stub_entry
->h
->elf
.root
.root
.string
);
9600 bfd_set_error (bfd_error_bad_value
);
9603 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9605 r2off
= bfd_get_64 (opd
->owner
, buf
);
9606 r2off
-= elf_gp (info
->output_bfd
);
9608 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9613 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9615 struct ppc_stub_hash_entry
*stub_entry
;
9616 struct ppc_branch_hash_entry
*br_entry
;
9617 struct bfd_link_info
*info
;
9618 struct ppc_link_hash_table
*htab
;
9623 Elf_Internal_Rela
*r
;
9626 /* Massage our args to the form they really have. */
9627 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9630 htab
= ppc_hash_table (info
);
9634 /* Make a note of the offset within the stubs for this entry. */
9635 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9636 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9638 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9639 switch (stub_entry
->stub_type
)
9641 case ppc_stub_long_branch
:
9642 case ppc_stub_long_branch_r2off
:
9643 /* Branches are relative. This is where we are going to. */
9644 off
= dest
= (stub_entry
->target_value
9645 + stub_entry
->target_section
->output_offset
9646 + stub_entry
->target_section
->output_section
->vma
);
9648 /* And this is where we are coming from. */
9649 off
-= (stub_entry
->stub_offset
9650 + stub_entry
->stub_sec
->output_offset
9651 + stub_entry
->stub_sec
->output_section
->vma
);
9654 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9656 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9660 htab
->stub_error
= TRUE
;
9663 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9666 if (PPC_HA (r2off
) != 0)
9669 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9672 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9676 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9678 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9680 info
->callbacks
->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9681 stub_entry
->root
.string
);
9682 htab
->stub_error
= TRUE
;
9686 if (info
->emitrelocations
)
9688 r
= get_relocs (stub_entry
->stub_sec
, 1);
9691 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9692 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9694 if (stub_entry
->h
!= NULL
)
9696 struct elf_link_hash_entry
**hashes
;
9697 unsigned long symndx
;
9698 struct ppc_link_hash_entry
*h
;
9700 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9703 bfd_size_type hsize
;
9705 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9706 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9709 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9710 htab
->stub_globals
= 1;
9712 symndx
= htab
->stub_globals
++;
9714 hashes
[symndx
] = &h
->elf
;
9715 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9716 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9717 h
= ppc_follow_link (h
->oh
);
9718 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9719 /* H is an opd symbol. The addend must be zero. */
9723 off
= (h
->elf
.root
.u
.def
.value
9724 + h
->elf
.root
.u
.def
.section
->output_offset
9725 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9732 case ppc_stub_plt_branch
:
9733 case ppc_stub_plt_branch_r2off
:
9734 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9735 stub_entry
->root
.string
+ 9,
9737 if (br_entry
== NULL
)
9739 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
9740 stub_entry
->root
.string
);
9741 htab
->stub_error
= TRUE
;
9745 dest
= (stub_entry
->target_value
9746 + stub_entry
->target_section
->output_offset
9747 + stub_entry
->target_section
->output_section
->vma
);
9749 bfd_put_64 (htab
->brlt
->owner
, dest
,
9750 htab
->brlt
->contents
+ br_entry
->offset
);
9752 if (br_entry
->iter
== htab
->stub_iteration
)
9756 if (htab
->relbrlt
!= NULL
)
9758 /* Create a reloc for the branch lookup table entry. */
9759 Elf_Internal_Rela rela
;
9762 rela
.r_offset
= (br_entry
->offset
9763 + htab
->brlt
->output_offset
9764 + htab
->brlt
->output_section
->vma
);
9765 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9766 rela
.r_addend
= dest
;
9768 rl
= htab
->relbrlt
->contents
;
9769 rl
+= (htab
->relbrlt
->reloc_count
++
9770 * sizeof (Elf64_External_Rela
));
9771 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9773 else if (info
->emitrelocations
)
9775 r
= get_relocs (htab
->brlt
, 1);
9778 /* brlt, being SEC_LINKER_CREATED does not go through the
9779 normal reloc processing. Symbols and offsets are not
9780 translated from input file to output file form, so
9781 set up the offset per the output file. */
9782 r
->r_offset
= (br_entry
->offset
9783 + htab
->brlt
->output_offset
9784 + htab
->brlt
->output_section
->vma
);
9785 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9790 dest
= (br_entry
->offset
9791 + htab
->brlt
->output_offset
9792 + htab
->brlt
->output_section
->vma
);
9795 - elf_gp (htab
->brlt
->output_section
->owner
)
9796 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9798 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9800 info
->callbacks
->einfo
9801 (_("%P: linkage table error against `%s'\n"),
9802 stub_entry
->root
.string
);
9803 bfd_set_error (bfd_error_bad_value
);
9804 htab
->stub_error
= TRUE
;
9808 if (info
->emitrelocations
)
9810 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9813 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9814 if (bfd_big_endian (info
->output_bfd
))
9816 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9818 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9819 r
[0].r_addend
= dest
;
9820 if (PPC_HA (off
) != 0)
9822 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9823 r
[1].r_offset
= r
[0].r_offset
+ 4;
9824 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9825 r
[1].r_addend
= r
[0].r_addend
;
9829 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9831 if (PPC_HA (off
) != 0)
9834 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9836 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9841 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9846 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9850 htab
->stub_error
= TRUE
;
9854 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9857 if (PPC_HA (off
) != 0)
9860 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9862 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9867 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9871 if (PPC_HA (r2off
) != 0)
9874 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9877 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9880 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9882 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9885 case ppc_stub_plt_call
:
9886 if (stub_entry
->h
!= NULL
9887 && stub_entry
->h
->is_func_descriptor
9888 && stub_entry
->h
->oh
!= NULL
)
9890 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9892 /* If the old-ABI "dot-symbol" is undefined make it weak so
9893 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9894 FIXME: We used to define the symbol on one of the call
9895 stubs instead, which is why we test symbol section id
9896 against htab->top_id in various places. Likely all
9897 these checks could now disappear. */
9898 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9899 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9900 /* Stop undo_symbol_twiddle changing it back to undefined. */
9901 fh
->was_undefined
= 0;
9904 /* Now build the stub. */
9905 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9906 if (dest
>= (bfd_vma
) -2)
9910 if (!htab
->elf
.dynamic_sections_created
9911 || stub_entry
->h
== NULL
9912 || stub_entry
->h
->elf
.dynindx
== -1)
9915 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9917 if (stub_entry
->h
== NULL
9918 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9920 Elf_Internal_Rela rela
;
9923 rela
.r_offset
= dest
;
9924 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9925 rela
.r_addend
= (stub_entry
->target_value
9926 + stub_entry
->target_section
->output_offset
9927 + stub_entry
->target_section
->output_section
->vma
);
9929 rl
= (htab
->reliplt
->contents
9930 + (htab
->reliplt
->reloc_count
++
9931 * sizeof (Elf64_External_Rela
)));
9932 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9933 stub_entry
->plt_ent
->plt
.offset
|= 1;
9937 - elf_gp (plt
->output_section
->owner
)
9938 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9940 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9942 info
->callbacks
->einfo
9943 (_("%P: linkage table error against `%s'\n"),
9944 stub_entry
->h
!= NULL
9945 ? stub_entry
->h
->elf
.root
.root
.string
9947 bfd_set_error (bfd_error_bad_value
);
9948 htab
->stub_error
= TRUE
;
9953 if (info
->emitrelocations
)
9955 r
= get_relocs (stub_entry
->stub_sec
,
9957 + (PPC_HA (off
) != 0)
9958 + (htab
->plt_static_chain
9959 && PPC_HA (off
+ 16) == PPC_HA (off
))));
9962 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9963 if (bfd_big_endian (info
->output_bfd
))
9965 r
[0].r_addend
= dest
;
9967 if (stub_entry
->h
!= NULL
9968 && (stub_entry
->h
== htab
->tls_get_addr_fd
9969 || stub_entry
->h
== htab
->tls_get_addr
)
9970 && !htab
->no_tls_get_addr_opt
)
9971 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
,
9972 htab
->plt_static_chain
);
9974 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
,
9975 htab
->plt_static_chain
);
9984 stub_entry
->stub_sec
->size
+= size
;
9986 if (htab
->emit_stub_syms
)
9988 struct elf_link_hash_entry
*h
;
9991 const char *const stub_str
[] = { "long_branch",
9992 "long_branch_r2off",
9997 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9998 len2
= strlen (stub_entry
->root
.string
);
9999 name
= bfd_malloc (len1
+ len2
+ 2);
10002 memcpy (name
, stub_entry
->root
.string
, 9);
10003 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10004 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10005 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10008 if (h
->root
.type
== bfd_link_hash_new
)
10010 h
->root
.type
= bfd_link_hash_defined
;
10011 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10012 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10013 h
->ref_regular
= 1;
10014 h
->def_regular
= 1;
10015 h
->ref_regular_nonweak
= 1;
10016 h
->forced_local
= 1;
10024 /* As above, but don't actually build the stub. Just bump offset so
10025 we know stub section sizes, and select plt_branch stubs where
10026 long_branch stubs won't do. */
10029 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10031 struct ppc_stub_hash_entry
*stub_entry
;
10032 struct bfd_link_info
*info
;
10033 struct ppc_link_hash_table
*htab
;
10037 /* Massage our args to the form they really have. */
10038 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10041 htab
= ppc_hash_table (info
);
10045 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10048 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10049 if (off
>= (bfd_vma
) -2)
10052 if (!htab
->elf
.dynamic_sections_created
10053 || stub_entry
->h
== NULL
10054 || stub_entry
->h
->elf
.dynindx
== -1)
10056 off
+= (plt
->output_offset
10057 + plt
->output_section
->vma
10058 - elf_gp (plt
->output_section
->owner
)
10059 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10061 size
= PLT_CALL_STUB_SIZE
;
10062 if (!htab
->plt_static_chain
)
10064 if (PPC_HA (off
) == 0)
10066 if (PPC_HA (off
+ 8 + 8 * htab
->plt_static_chain
) != PPC_HA (off
))
10068 if (stub_entry
->h
!= NULL
10069 && (stub_entry
->h
== htab
->tls_get_addr_fd
10070 || stub_entry
->h
== htab
->tls_get_addr
)
10071 && !htab
->no_tls_get_addr_opt
)
10073 if (info
->emitrelocations
)
10075 stub_entry
->stub_sec
->reloc_count
10077 + (PPC_HA (off
) != 0)
10078 + (htab
->plt_static_chain
10079 && PPC_HA (off
+ 16) == PPC_HA (off
)));
10080 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10085 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10089 off
= (stub_entry
->target_value
10090 + stub_entry
->target_section
->output_offset
10091 + stub_entry
->target_section
->output_section
->vma
);
10092 off
-= (stub_entry
->stub_sec
->size
10093 + stub_entry
->stub_sec
->output_offset
10094 + stub_entry
->stub_sec
->output_section
->vma
);
10096 /* Reset the stub type from the plt variant in case we now
10097 can reach with a shorter stub. */
10098 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10099 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10102 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10104 r2off
= get_r2off (info
, stub_entry
);
10107 htab
->stub_error
= TRUE
;
10111 if (PPC_HA (r2off
) != 0)
10116 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10117 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10119 struct ppc_branch_hash_entry
*br_entry
;
10121 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10122 stub_entry
->root
.string
+ 9,
10124 if (br_entry
== NULL
)
10126 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
10127 stub_entry
->root
.string
);
10128 htab
->stub_error
= TRUE
;
10132 if (br_entry
->iter
!= htab
->stub_iteration
)
10134 br_entry
->iter
= htab
->stub_iteration
;
10135 br_entry
->offset
= htab
->brlt
->size
;
10136 htab
->brlt
->size
+= 8;
10138 if (htab
->relbrlt
!= NULL
)
10139 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10140 else if (info
->emitrelocations
)
10142 htab
->brlt
->reloc_count
+= 1;
10143 htab
->brlt
->flags
|= SEC_RELOC
;
10147 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10148 off
= (br_entry
->offset
10149 + htab
->brlt
->output_offset
10150 + htab
->brlt
->output_section
->vma
10151 - elf_gp (htab
->brlt
->output_section
->owner
)
10152 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10154 if (info
->emitrelocations
)
10156 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10157 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10160 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10163 if (PPC_HA (off
) != 0)
10169 if (PPC_HA (off
) != 0)
10172 if (PPC_HA (r2off
) != 0)
10176 else if (info
->emitrelocations
)
10178 stub_entry
->stub_sec
->reloc_count
+= 1;
10179 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10183 stub_entry
->stub_sec
->size
+= size
;
10187 /* Set up various things so that we can make a list of input sections
10188 for each output section included in the link. Returns -1 on error,
10189 0 when no stubs will be needed, and 1 on success. */
10192 ppc64_elf_setup_section_lists
10193 (struct bfd_link_info
*info
,
10194 asection
*(*add_stub_section
) (const char *, asection
*),
10195 void (*layout_sections_again
) (void))
10198 int top_id
, top_index
, id
;
10200 asection
**input_list
;
10202 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10206 /* Stash our params away. */
10207 htab
->add_stub_section
= add_stub_section
;
10208 htab
->layout_sections_again
= layout_sections_again
;
10210 if (htab
->brlt
== NULL
)
10213 /* Find the top input section id. */
10214 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10216 input_bfd
= input_bfd
->link_next
)
10218 for (section
= input_bfd
->sections
;
10220 section
= section
->next
)
10222 if (top_id
< section
->id
)
10223 top_id
= section
->id
;
10227 htab
->top_id
= top_id
;
10228 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10229 htab
->stub_group
= bfd_zmalloc (amt
);
10230 if (htab
->stub_group
== NULL
)
10233 /* Set toc_off for com, und, abs and ind sections. */
10234 for (id
= 0; id
< 3; id
++)
10235 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10237 /* We can't use output_bfd->section_count here to find the top output
10238 section index as some sections may have been removed, and
10239 strip_excluded_output_sections doesn't renumber the indices. */
10240 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10242 section
= section
->next
)
10244 if (top_index
< section
->index
)
10245 top_index
= section
->index
;
10248 htab
->top_index
= top_index
;
10249 amt
= sizeof (asection
*) * (top_index
+ 1);
10250 input_list
= bfd_zmalloc (amt
);
10251 htab
->input_list
= input_list
;
10252 if (input_list
== NULL
)
10258 /* Set up for first pass at multitoc partitioning. */
10261 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10263 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10265 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10266 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10267 htab
->toc_bfd
= NULL
;
10268 htab
->toc_first_sec
= NULL
;
10271 /* The linker repeatedly calls this function for each TOC input section
10272 and linker generated GOT section. Group input bfds such that the toc
10273 within a group is less than 64k in size. */
10276 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10278 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10279 bfd_vma addr
, off
, limit
;
10284 if (!htab
->second_toc_pass
)
10286 /* Keep track of the first .toc or .got section for this input bfd. */
10287 if (htab
->toc_bfd
!= isec
->owner
)
10289 htab
->toc_bfd
= isec
->owner
;
10290 htab
->toc_first_sec
= isec
;
10293 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10294 off
= addr
- htab
->toc_curr
;
10295 limit
= 0x80008000;
10296 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10298 if (off
+ isec
->size
> limit
)
10300 addr
= (htab
->toc_first_sec
->output_offset
10301 + htab
->toc_first_sec
->output_section
->vma
);
10302 htab
->toc_curr
= addr
;
10305 /* toc_curr is the base address of this toc group. Set elf_gp
10306 for the input section to be the offset relative to the
10307 output toc base plus 0x8000. Making the input elf_gp an
10308 offset allows us to move the toc as a whole without
10309 recalculating input elf_gp. */
10310 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10311 off
+= TOC_BASE_OFF
;
10313 /* Die if someone uses a linker script that doesn't keep input
10314 file .toc and .got together. */
10315 if (elf_gp (isec
->owner
) != 0
10316 && elf_gp (isec
->owner
) != off
)
10319 elf_gp (isec
->owner
) = off
;
10323 /* During the second pass toc_first_sec points to the start of
10324 a toc group, and toc_curr is used to track the old elf_gp.
10325 We use toc_bfd to ensure we only look at each bfd once. */
10326 if (htab
->toc_bfd
== isec
->owner
)
10328 htab
->toc_bfd
= isec
->owner
;
10330 if (htab
->toc_first_sec
== NULL
10331 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10333 htab
->toc_curr
= elf_gp (isec
->owner
);
10334 htab
->toc_first_sec
= isec
;
10336 addr
= (htab
->toc_first_sec
->output_offset
10337 + htab
->toc_first_sec
->output_section
->vma
);
10338 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10339 elf_gp (isec
->owner
) = off
;
10344 /* Called via elf_link_hash_traverse to merge GOT entries for global
10348 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10350 if (h
->root
.type
== bfd_link_hash_indirect
)
10353 merge_got_entries (&h
->got
.glist
);
10358 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10362 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10364 struct got_entry
*gent
;
10366 if (h
->root
.type
== bfd_link_hash_indirect
)
10369 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10370 if (!gent
->is_indirect
)
10371 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10375 /* Called on the first multitoc pass after the last call to
10376 ppc64_elf_next_toc_section. This function removes duplicate GOT
10380 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10382 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10383 struct bfd
*ibfd
, *ibfd2
;
10384 bfd_boolean done_something
;
10386 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10388 if (!htab
->do_multi_toc
)
10391 /* Merge global sym got entries within a toc group. */
10392 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10394 /* And tlsld_got. */
10395 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10397 struct got_entry
*ent
, *ent2
;
10399 if (!is_ppc64_elf (ibfd
))
10402 ent
= ppc64_tlsld_got (ibfd
);
10403 if (!ent
->is_indirect
10404 && ent
->got
.offset
!= (bfd_vma
) -1)
10406 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10408 if (!is_ppc64_elf (ibfd2
))
10411 ent2
= ppc64_tlsld_got (ibfd2
);
10412 if (!ent2
->is_indirect
10413 && ent2
->got
.offset
!= (bfd_vma
) -1
10414 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10416 ent2
->is_indirect
= TRUE
;
10417 ent2
->got
.ent
= ent
;
10423 /* Zap sizes of got sections. */
10424 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10425 htab
->reliplt
->size
-= htab
->got_reli_size
;
10426 htab
->got_reli_size
= 0;
10428 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10430 asection
*got
, *relgot
;
10432 if (!is_ppc64_elf (ibfd
))
10435 got
= ppc64_elf_tdata (ibfd
)->got
;
10438 got
->rawsize
= got
->size
;
10440 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10441 relgot
->rawsize
= relgot
->size
;
10446 /* Now reallocate the got, local syms first. We don't need to
10447 allocate section contents again since we never increase size. */
10448 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10450 struct got_entry
**lgot_ents
;
10451 struct got_entry
**end_lgot_ents
;
10452 struct plt_entry
**local_plt
;
10453 struct plt_entry
**end_local_plt
;
10454 unsigned char *lgot_masks
;
10455 bfd_size_type locsymcount
;
10456 Elf_Internal_Shdr
*symtab_hdr
;
10457 asection
*s
, *srel
;
10459 if (!is_ppc64_elf (ibfd
))
10462 lgot_ents
= elf_local_got_ents (ibfd
);
10466 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10467 locsymcount
= symtab_hdr
->sh_info
;
10468 end_lgot_ents
= lgot_ents
+ locsymcount
;
10469 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10470 end_local_plt
= local_plt
+ locsymcount
;
10471 lgot_masks
= (unsigned char *) end_local_plt
;
10472 s
= ppc64_elf_tdata (ibfd
)->got
;
10473 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10474 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10476 struct got_entry
*ent
;
10478 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10480 unsigned int num
= 1;
10481 ent
->got
.offset
= s
->size
;
10482 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10484 s
->size
+= num
* 8;
10486 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10487 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10489 htab
->reliplt
->size
10490 += num
* sizeof (Elf64_External_Rela
);
10491 htab
->got_reli_size
10492 += num
* sizeof (Elf64_External_Rela
);
10498 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10500 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10502 struct got_entry
*ent
;
10504 if (!is_ppc64_elf (ibfd
))
10507 ent
= ppc64_tlsld_got (ibfd
);
10508 if (!ent
->is_indirect
10509 && ent
->got
.offset
!= (bfd_vma
) -1)
10511 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10512 ent
->got
.offset
= s
->size
;
10516 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10517 srel
->size
+= sizeof (Elf64_External_Rela
);
10522 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10523 if (!done_something
)
10524 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10528 if (!is_ppc64_elf (ibfd
))
10531 got
= ppc64_elf_tdata (ibfd
)->got
;
10534 done_something
= got
->rawsize
!= got
->size
;
10535 if (done_something
)
10540 if (done_something
)
10541 (*htab
->layout_sections_again
) ();
10543 /* Set up for second pass over toc sections to recalculate elf_gp
10544 on input sections. */
10545 htab
->toc_bfd
= NULL
;
10546 htab
->toc_first_sec
= NULL
;
10547 htab
->second_toc_pass
= TRUE
;
10548 return done_something
;
10551 /* Called after second pass of multitoc partitioning. */
10554 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10556 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10558 /* After the second pass, toc_curr tracks the TOC offset used
10559 for code sections below in ppc64_elf_next_input_section. */
10560 htab
->toc_curr
= TOC_BASE_OFF
;
10563 /* No toc references were found in ISEC. If the code in ISEC makes no
10564 calls, then there's no need to use toc adjusting stubs when branching
10565 into ISEC. Actually, indirect calls from ISEC are OK as they will
10566 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10567 needed, and 2 if a cyclical call-graph was found but no other reason
10568 for a stub was detected. If called from the top level, a return of
10569 2 means the same as a return of 0. */
10572 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10576 /* Mark this section as checked. */
10577 isec
->call_check_done
= 1;
10579 /* We know none of our code bearing sections will need toc stubs. */
10580 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10583 if (isec
->size
== 0)
10586 if (isec
->output_section
== NULL
)
10590 if (isec
->reloc_count
!= 0)
10592 Elf_Internal_Rela
*relstart
, *rel
;
10593 Elf_Internal_Sym
*local_syms
;
10594 struct ppc_link_hash_table
*htab
;
10596 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10597 info
->keep_memory
);
10598 if (relstart
== NULL
)
10601 /* Look for branches to outside of this section. */
10603 htab
= ppc_hash_table (info
);
10607 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10609 enum elf_ppc64_reloc_type r_type
;
10610 unsigned long r_symndx
;
10611 struct elf_link_hash_entry
*h
;
10612 struct ppc_link_hash_entry
*eh
;
10613 Elf_Internal_Sym
*sym
;
10615 struct _opd_sec_data
*opd
;
10619 r_type
= ELF64_R_TYPE (rel
->r_info
);
10620 if (r_type
!= R_PPC64_REL24
10621 && r_type
!= R_PPC64_REL14
10622 && r_type
!= R_PPC64_REL14_BRTAKEN
10623 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10626 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10627 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10634 /* Calls to dynamic lib functions go through a plt call stub
10636 eh
= (struct ppc_link_hash_entry
*) h
;
10638 && (eh
->elf
.plt
.plist
!= NULL
10640 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10646 if (sym_sec
== NULL
)
10647 /* Ignore other undefined symbols. */
10650 /* Assume branches to other sections not included in the
10651 link need stubs too, to cover -R and absolute syms. */
10652 if (sym_sec
->output_section
== NULL
)
10659 sym_value
= sym
->st_value
;
10662 if (h
->root
.type
!= bfd_link_hash_defined
10663 && h
->root
.type
!= bfd_link_hash_defweak
)
10665 sym_value
= h
->root
.u
.def
.value
;
10667 sym_value
+= rel
->r_addend
;
10669 /* If this branch reloc uses an opd sym, find the code section. */
10670 opd
= get_opd_info (sym_sec
);
10673 if (h
== NULL
&& opd
->adjust
!= NULL
)
10677 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10679 /* Assume deleted functions won't ever be called. */
10681 sym_value
+= adjust
;
10684 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10685 if (dest
== (bfd_vma
) -1)
10690 + sym_sec
->output_offset
10691 + sym_sec
->output_section
->vma
);
10693 /* Ignore branch to self. */
10694 if (sym_sec
== isec
)
10697 /* If the called function uses the toc, we need a stub. */
10698 if (sym_sec
->has_toc_reloc
10699 || sym_sec
->makes_toc_func_call
)
10705 /* Assume any branch that needs a long branch stub might in fact
10706 need a plt_branch stub. A plt_branch stub uses r2. */
10707 else if (dest
- (isec
->output_offset
10708 + isec
->output_section
->vma
10709 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10715 /* If calling back to a section in the process of being
10716 tested, we can't say for sure that no toc adjusting stubs
10717 are needed, so don't return zero. */
10718 else if (sym_sec
->call_check_in_progress
)
10721 /* Branches to another section that itself doesn't have any TOC
10722 references are OK. Recursively call ourselves to check. */
10723 else if (!sym_sec
->call_check_done
)
10727 /* Mark current section as indeterminate, so that other
10728 sections that call back to current won't be marked as
10730 isec
->call_check_in_progress
= 1;
10731 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10732 isec
->call_check_in_progress
= 0;
10743 if (local_syms
!= NULL
10744 && (elf_symtab_hdr (isec
->owner
).contents
10745 != (unsigned char *) local_syms
))
10747 if (elf_section_data (isec
)->relocs
!= relstart
)
10752 && isec
->map_head
.s
!= NULL
10753 && (strcmp (isec
->output_section
->name
, ".init") == 0
10754 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10756 if (isec
->map_head
.s
->has_toc_reloc
10757 || isec
->map_head
.s
->makes_toc_func_call
)
10759 else if (!isec
->map_head
.s
->call_check_done
)
10762 isec
->call_check_in_progress
= 1;
10763 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10764 isec
->call_check_in_progress
= 0;
10771 isec
->makes_toc_func_call
= 1;
10776 /* The linker repeatedly calls this function for each input section,
10777 in the order that input sections are linked into output sections.
10778 Build lists of input sections to determine groupings between which
10779 we may insert linker stubs. */
10782 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10784 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10789 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10790 && isec
->output_section
->index
<= htab
->top_index
)
10792 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10793 /* Steal the link_sec pointer for our list. */
10794 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10795 /* This happens to make the list in reverse order,
10796 which is what we want. */
10797 PREV_SEC (isec
) = *list
;
10801 if (htab
->multi_toc_needed
)
10803 /* If a code section has a function that uses the TOC then we need
10804 to use the right TOC (obviously). Also, make sure that .opd gets
10805 the correct TOC value for R_PPC64_TOC relocs that don't have or
10806 can't find their function symbol (shouldn't ever happen now).
10807 Also specially treat .fixup for the linux kernel. .fixup
10808 contains branches, but only back to the function that hit an
10810 if (isec
->has_toc_reloc
10811 || (isec
->flags
& SEC_CODE
) == 0
10812 || strcmp (isec
->name
, ".fixup") == 0)
10814 if (elf_gp (isec
->owner
) != 0)
10815 htab
->toc_curr
= elf_gp (isec
->owner
);
10819 if (!isec
->call_check_done
10820 && toc_adjusting_stub_needed (info
, isec
) < 0)
10822 /* If we make a local call from this section, ie. a branch
10823 without a following nop, then we have no place to put a
10824 toc restoring insn. We must use the same toc group as
10826 Testing makes_toc_func_call actually tests for *any*
10827 calls to functions that need a good toc pointer. A more
10828 precise test would be better, as this one will set
10829 incorrect values for pasted .init/.fini fragments.
10830 (Fixed later in check_pasted_section.) */
10831 if (isec
->makes_toc_func_call
10832 && elf_gp (isec
->owner
) != 0)
10833 htab
->toc_curr
= elf_gp (isec
->owner
);
10837 /* Functions that don't use the TOC can belong in any TOC group.
10838 Use the last TOC base. */
10839 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10843 /* Check that all .init and .fini sections use the same toc, if they
10844 have toc relocs. */
10847 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10849 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10853 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10854 bfd_vma toc_off
= 0;
10857 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10858 if (i
->has_toc_reloc
)
10861 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10862 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10867 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10868 if (i
->makes_toc_func_call
)
10870 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10874 /* Make sure the whole pasted function uses the same toc offset. */
10876 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10877 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10883 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10885 return (check_pasted_section (info
, ".init")
10886 & check_pasted_section (info
, ".fini"));
10889 /* See whether we can group stub sections together. Grouping stub
10890 sections may result in fewer stubs. More importantly, we need to
10891 put all .init* and .fini* stubs at the beginning of the .init or
10892 .fini output sections respectively, because glibc splits the
10893 _init and _fini functions into multiple parts. Putting a stub in
10894 the middle of a function is not a good idea. */
10897 group_sections (struct ppc_link_hash_table
*htab
,
10898 bfd_size_type stub_group_size
,
10899 bfd_boolean stubs_always_before_branch
)
10902 bfd_size_type stub14_group_size
;
10903 bfd_boolean suppress_size_errors
;
10905 suppress_size_errors
= FALSE
;
10906 stub14_group_size
= stub_group_size
;
10907 if (stub_group_size
== 1)
10909 /* Default values. */
10910 if (stubs_always_before_branch
)
10912 stub_group_size
= 0x1e00000;
10913 stub14_group_size
= 0x7800;
10917 stub_group_size
= 0x1c00000;
10918 stub14_group_size
= 0x7000;
10920 suppress_size_errors
= TRUE
;
10923 list
= htab
->input_list
+ htab
->top_index
;
10926 asection
*tail
= *list
;
10927 while (tail
!= NULL
)
10931 bfd_size_type total
;
10932 bfd_boolean big_sec
;
10936 total
= tail
->size
;
10937 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10938 && ppc64_elf_section_data (tail
)->has_14bit_branch
10939 ? stub14_group_size
: stub_group_size
);
10940 if (big_sec
&& !suppress_size_errors
)
10941 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10942 tail
->owner
, tail
);
10943 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10945 while ((prev
= PREV_SEC (curr
)) != NULL
10946 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10947 < (ppc64_elf_section_data (prev
) != NULL
10948 && ppc64_elf_section_data (prev
)->has_14bit_branch
10949 ? stub14_group_size
: stub_group_size
))
10950 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10953 /* OK, the size from the start of CURR to the end is less
10954 than stub_group_size and thus can be handled by one stub
10955 section. (or the tail section is itself larger than
10956 stub_group_size, in which case we may be toast.) We
10957 should really be keeping track of the total size of stubs
10958 added here, as stubs contribute to the final output
10959 section size. That's a little tricky, and this way will
10960 only break if stubs added make the total size more than
10961 2^25, ie. for the default stub_group_size, if stubs total
10962 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10965 prev
= PREV_SEC (tail
);
10966 /* Set up this stub group. */
10967 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10969 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10971 /* But wait, there's more! Input sections up to stub_group_size
10972 bytes before the stub section can be handled by it too.
10973 Don't do this if we have a really large section after the
10974 stubs, as adding more stubs increases the chance that
10975 branches may not reach into the stub section. */
10976 if (!stubs_always_before_branch
&& !big_sec
)
10979 while (prev
!= NULL
10980 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10981 < (ppc64_elf_section_data (prev
) != NULL
10982 && ppc64_elf_section_data (prev
)->has_14bit_branch
10983 ? stub14_group_size
: stub_group_size
))
10984 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10987 prev
= PREV_SEC (tail
);
10988 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10994 while (list
-- != htab
->input_list
);
10995 free (htab
->input_list
);
10999 static const unsigned char glink_eh_frame_cie
[] =
11001 0, 0, 0, 16, /* length. */
11002 0, 0, 0, 0, /* id. */
11003 1, /* CIE version. */
11004 'z', 'R', 0, /* Augmentation string. */
11005 4, /* Code alignment. */
11006 0x78, /* Data alignment. */
11008 1, /* Augmentation size. */
11009 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11010 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11013 /* Stripping output sections is normally done before dynamic section
11014 symbols have been allocated. This function is called later, and
11015 handles cases like htab->brlt which is mapped to its own output
11019 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11021 if (isec
->size
== 0
11022 && isec
->output_section
->size
== 0
11023 && !bfd_section_removed_from_list (info
->output_bfd
,
11024 isec
->output_section
)
11025 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11027 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11028 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11029 info
->output_bfd
->section_count
--;
11033 /* Determine and set the size of the stub section for a final link.
11035 The basic idea here is to examine all the relocations looking for
11036 PC-relative calls to a target that is unreachable with a "bl"
11040 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
,
11041 bfd_boolean plt_static_chain
)
11043 bfd_size_type stub_group_size
;
11044 bfd_boolean stubs_always_before_branch
;
11045 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11050 htab
->plt_static_chain
= plt_static_chain
;
11051 stubs_always_before_branch
= group_size
< 0;
11052 if (group_size
< 0)
11053 stub_group_size
= -group_size
;
11055 stub_group_size
= group_size
;
11057 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11062 unsigned int bfd_indx
;
11063 asection
*stub_sec
;
11065 htab
->stub_iteration
+= 1;
11067 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11069 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
11071 Elf_Internal_Shdr
*symtab_hdr
;
11073 Elf_Internal_Sym
*local_syms
= NULL
;
11075 if (!is_ppc64_elf (input_bfd
))
11078 /* We'll need the symbol table in a second. */
11079 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11080 if (symtab_hdr
->sh_info
== 0)
11083 /* Walk over each section attached to the input bfd. */
11084 for (section
= input_bfd
->sections
;
11086 section
= section
->next
)
11088 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
11090 /* If there aren't any relocs, then there's nothing more
11092 if ((section
->flags
& SEC_RELOC
) == 0
11093 || (section
->flags
& SEC_ALLOC
) == 0
11094 || (section
->flags
& SEC_LOAD
) == 0
11095 || (section
->flags
& SEC_CODE
) == 0
11096 || section
->reloc_count
== 0)
11099 /* If this section is a link-once section that will be
11100 discarded, then don't create any stubs. */
11101 if (section
->output_section
== NULL
11102 || section
->output_section
->owner
!= info
->output_bfd
)
11105 /* Get the relocs. */
11107 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
11108 info
->keep_memory
);
11109 if (internal_relocs
== NULL
)
11110 goto error_ret_free_local
;
11112 /* Now examine each relocation. */
11113 irela
= internal_relocs
;
11114 irelaend
= irela
+ section
->reloc_count
;
11115 for (; irela
< irelaend
; irela
++)
11117 enum elf_ppc64_reloc_type r_type
;
11118 unsigned int r_indx
;
11119 enum ppc_stub_type stub_type
;
11120 struct ppc_stub_hash_entry
*stub_entry
;
11121 asection
*sym_sec
, *code_sec
;
11122 bfd_vma sym_value
, code_value
;
11123 bfd_vma destination
;
11124 bfd_boolean ok_dest
;
11125 struct ppc_link_hash_entry
*hash
;
11126 struct ppc_link_hash_entry
*fdh
;
11127 struct elf_link_hash_entry
*h
;
11128 Elf_Internal_Sym
*sym
;
11130 const asection
*id_sec
;
11131 struct _opd_sec_data
*opd
;
11132 struct plt_entry
*plt_ent
;
11134 r_type
= ELF64_R_TYPE (irela
->r_info
);
11135 r_indx
= ELF64_R_SYM (irela
->r_info
);
11137 if (r_type
>= R_PPC64_max
)
11139 bfd_set_error (bfd_error_bad_value
);
11140 goto error_ret_free_internal
;
11143 /* Only look for stubs on branch instructions. */
11144 if (r_type
!= R_PPC64_REL24
11145 && r_type
!= R_PPC64_REL14
11146 && r_type
!= R_PPC64_REL14_BRTAKEN
11147 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11150 /* Now determine the call target, its name, value,
11152 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
11153 r_indx
, input_bfd
))
11154 goto error_ret_free_internal
;
11155 hash
= (struct ppc_link_hash_entry
*) h
;
11162 sym_value
= sym
->st_value
;
11165 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
11166 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
11168 sym_value
= hash
->elf
.root
.u
.def
.value
;
11169 if (sym_sec
->output_section
!= NULL
)
11172 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
11173 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
11175 /* Recognise an old ABI func code entry sym, and
11176 use the func descriptor sym instead if it is
11178 if (hash
->elf
.root
.root
.string
[0] == '.'
11179 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
11181 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
11182 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
11184 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
11185 sym_value
= fdh
->elf
.root
.u
.def
.value
;
11186 if (sym_sec
->output_section
!= NULL
)
11195 bfd_set_error (bfd_error_bad_value
);
11196 goto error_ret_free_internal
;
11202 sym_value
+= irela
->r_addend
;
11203 destination
= (sym_value
11204 + sym_sec
->output_offset
11205 + sym_sec
->output_section
->vma
);
11208 code_sec
= sym_sec
;
11209 code_value
= sym_value
;
11210 opd
= get_opd_info (sym_sec
);
11215 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11217 long adjust
= opd
->adjust
[sym_value
/ 8];
11220 code_value
+= adjust
;
11221 sym_value
+= adjust
;
11223 dest
= opd_entry_value (sym_sec
, sym_value
,
11224 &code_sec
, &code_value
);
11225 if (dest
!= (bfd_vma
) -1)
11227 destination
= dest
;
11230 /* Fixup old ABI sym to point at code
11232 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11233 hash
->elf
.root
.u
.def
.section
= code_sec
;
11234 hash
->elf
.root
.u
.def
.value
= code_value
;
11239 /* Determine what (if any) linker stub is needed. */
11241 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11242 &plt_ent
, destination
);
11244 if (stub_type
!= ppc_stub_plt_call
)
11246 /* Check whether we need a TOC adjusting stub.
11247 Since the linker pastes together pieces from
11248 different object files when creating the
11249 _init and _fini functions, it may be that a
11250 call to what looks like a local sym is in
11251 fact a call needing a TOC adjustment. */
11252 if (code_sec
!= NULL
11253 && code_sec
->output_section
!= NULL
11254 && (htab
->stub_group
[code_sec
->id
].toc_off
11255 != htab
->stub_group
[section
->id
].toc_off
)
11256 && (code_sec
->has_toc_reloc
11257 || code_sec
->makes_toc_func_call
))
11258 stub_type
= ppc_stub_long_branch_r2off
;
11261 if (stub_type
== ppc_stub_none
)
11264 /* __tls_get_addr calls might be eliminated. */
11265 if (stub_type
!= ppc_stub_plt_call
11267 && (hash
== htab
->tls_get_addr
11268 || hash
== htab
->tls_get_addr_fd
)
11269 && section
->has_tls_reloc
11270 && irela
!= internal_relocs
)
11272 /* Get tls info. */
11273 unsigned char *tls_mask
;
11275 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11276 irela
- 1, input_bfd
))
11277 goto error_ret_free_internal
;
11278 if (*tls_mask
!= 0)
11282 if (stub_type
== ppc_stub_plt_call
11283 && irela
+ 1 < irelaend
11284 && irela
[1].r_offset
== irela
->r_offset
+ 4
11285 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
11286 && !tocsave_find (htab
, INSERT
,
11287 &local_syms
, irela
+ 1, input_bfd
))
11288 goto error_ret_free_internal
;
11290 /* Support for grouping stub sections. */
11291 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11293 /* Get the name of this stub. */
11294 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11296 goto error_ret_free_internal
;
11298 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11299 stub_name
, FALSE
, FALSE
);
11300 if (stub_entry
!= NULL
)
11302 /* The proper stub has already been created. */
11307 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
11308 if (stub_entry
== NULL
)
11311 error_ret_free_internal
:
11312 if (elf_section_data (section
)->relocs
== NULL
)
11313 free (internal_relocs
);
11314 error_ret_free_local
:
11315 if (local_syms
!= NULL
11316 && (symtab_hdr
->contents
11317 != (unsigned char *) local_syms
))
11322 stub_entry
->stub_type
= stub_type
;
11323 if (stub_type
!= ppc_stub_plt_call
)
11325 stub_entry
->target_value
= code_value
;
11326 stub_entry
->target_section
= code_sec
;
11330 stub_entry
->target_value
= sym_value
;
11331 stub_entry
->target_section
= sym_sec
;
11333 stub_entry
->h
= hash
;
11334 stub_entry
->plt_ent
= plt_ent
;
11335 stub_entry
->addend
= irela
->r_addend
;
11337 if (stub_entry
->h
!= NULL
)
11338 htab
->stub_globals
+= 1;
11341 /* We're done with the internal relocs, free them. */
11342 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11343 free (internal_relocs
);
11346 if (local_syms
!= NULL
11347 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11349 if (!info
->keep_memory
)
11352 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11356 /* We may have added some stubs. Find out the new size of the
11358 for (stub_sec
= htab
->stub_bfd
->sections
;
11360 stub_sec
= stub_sec
->next
)
11361 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11363 stub_sec
->rawsize
= stub_sec
->size
;
11364 stub_sec
->size
= 0;
11365 stub_sec
->reloc_count
= 0;
11366 stub_sec
->flags
&= ~SEC_RELOC
;
11369 htab
->brlt
->size
= 0;
11370 htab
->brlt
->reloc_count
= 0;
11371 htab
->brlt
->flags
&= ~SEC_RELOC
;
11372 if (htab
->relbrlt
!= NULL
)
11373 htab
->relbrlt
->size
= 0;
11375 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11377 if (info
->emitrelocations
11378 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11380 htab
->glink
->reloc_count
= 1;
11381 htab
->glink
->flags
|= SEC_RELOC
;
11384 if (htab
->glink_eh_frame
!= NULL
11385 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
11386 && (htab
->glink_eh_frame
->flags
& SEC_EXCLUDE
) == 0)
11388 bfd_size_type size
= 0;
11390 for (stub_sec
= htab
->stub_bfd
->sections
;
11392 stub_sec
= stub_sec
->next
)
11393 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11395 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11398 size
+= sizeof (glink_eh_frame_cie
);
11399 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
11400 htab
->glink_eh_frame
->size
= size
;
11403 for (stub_sec
= htab
->stub_bfd
->sections
;
11405 stub_sec
= stub_sec
->next
)
11406 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11407 && stub_sec
->rawsize
!= stub_sec
->size
)
11410 /* Exit from this loop when no stubs have been added, and no stubs
11411 have changed size. */
11412 if (stub_sec
== NULL
11413 && (htab
->glink_eh_frame
== NULL
11414 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
11417 /* Ask the linker to do its stuff. */
11418 (*htab
->layout_sections_again
) ();
11421 maybe_strip_output (info
, htab
->brlt
);
11422 if (htab
->glink_eh_frame
!= NULL
)
11423 maybe_strip_output (info
, htab
->glink_eh_frame
);
11428 /* Called after we have determined section placement. If sections
11429 move, we'll be called again. Provide a value for TOCstart. */
11432 ppc64_elf_toc (bfd
*obfd
)
11437 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11438 order. The TOC starts where the first of these sections starts. */
11439 s
= bfd_get_section_by_name (obfd
, ".got");
11440 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11441 s
= bfd_get_section_by_name (obfd
, ".toc");
11442 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11443 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11444 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11445 s
= bfd_get_section_by_name (obfd
, ".plt");
11446 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11448 /* This may happen for
11449 o references to TOC base (SYM@toc / TOC[tc0]) without a
11451 o bad linker script
11452 o --gc-sections and empty TOC sections
11454 FIXME: Warn user? */
11456 /* Look for a likely section. We probably won't even be
11458 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11459 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11461 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11464 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11465 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11466 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11469 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11470 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11474 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11475 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11481 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11486 /* Build all the stubs associated with the current output file.
11487 The stubs are kept in a hash table attached to the main linker
11488 hash table. This function is called via gldelf64ppc_finish. */
11491 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11492 struct bfd_link_info
*info
,
11495 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11496 asection
*stub_sec
;
11498 int stub_sec_count
= 0;
11503 htab
->emit_stub_syms
= emit_stub_syms
;
11505 /* Allocate memory to hold the linker stubs. */
11506 for (stub_sec
= htab
->stub_bfd
->sections
;
11508 stub_sec
= stub_sec
->next
)
11509 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11510 && stub_sec
->size
!= 0)
11512 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11513 if (stub_sec
->contents
== NULL
)
11515 /* We want to check that built size is the same as calculated
11516 size. rawsize is a convenient location to use. */
11517 stub_sec
->rawsize
= stub_sec
->size
;
11518 stub_sec
->size
= 0;
11521 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11526 /* Build the .glink plt call stub. */
11527 if (htab
->emit_stub_syms
)
11529 struct elf_link_hash_entry
*h
;
11530 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11531 TRUE
, FALSE
, FALSE
);
11534 if (h
->root
.type
== bfd_link_hash_new
)
11536 h
->root
.type
= bfd_link_hash_defined
;
11537 h
->root
.u
.def
.section
= htab
->glink
;
11538 h
->root
.u
.def
.value
= 8;
11539 h
->ref_regular
= 1;
11540 h
->def_regular
= 1;
11541 h
->ref_regular_nonweak
= 1;
11542 h
->forced_local
= 1;
11546 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11547 if (info
->emitrelocations
)
11549 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11552 r
->r_offset
= (htab
->glink
->output_offset
11553 + htab
->glink
->output_section
->vma
);
11554 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11555 r
->r_addend
= plt0
;
11557 p
= htab
->glink
->contents
;
11558 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11559 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11561 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11563 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11565 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11567 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11569 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11571 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11573 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11575 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11577 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11579 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11581 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11583 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11585 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11589 /* Build the .glink lazy link call stubs. */
11591 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11595 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11600 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11602 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11605 bfd_put_32 (htab
->glink
->owner
,
11606 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11610 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11613 if (htab
->brlt
->size
!= 0)
11615 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11617 if (htab
->brlt
->contents
== NULL
)
11620 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11622 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11623 htab
->relbrlt
->size
);
11624 if (htab
->relbrlt
->contents
== NULL
)
11628 if (htab
->glink_eh_frame
!= NULL
11629 && htab
->glink_eh_frame
->size
!= 0)
11633 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
11636 htab
->glink_eh_frame
->contents
= p
;
11638 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
11640 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
11641 /* CIE length (rewrite in case little-endian). */
11642 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
11643 p
+= sizeof (glink_eh_frame_cie
);
11645 for (stub_sec
= htab
->stub_bfd
->sections
;
11647 stub_sec
= stub_sec
->next
)
11648 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11651 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
11654 val
= p
- htab
->glink_eh_frame
->contents
;
11655 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11657 /* Offset to stub section. */
11658 val
= (stub_sec
->output_section
->vma
11659 + stub_sec
->output_offset
);
11660 val
-= (htab
->glink_eh_frame
->output_section
->vma
11661 + htab
->glink_eh_frame
->output_offset
);
11662 val
-= p
- htab
->glink_eh_frame
->contents
;
11663 if (val
+ 0x80000000 > 0xffffffff)
11665 info
->callbacks
->einfo
11666 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11670 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11672 /* stub section size. */
11673 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
11675 /* Augmentation. */
11680 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11683 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
11686 val
= p
- htab
->glink_eh_frame
->contents
;
11687 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11689 /* Offset to .glink. */
11690 val
= (htab
->glink
->output_section
->vma
11691 + htab
->glink
->output_offset
11693 val
-= (htab
->glink_eh_frame
->output_section
->vma
11694 + htab
->glink_eh_frame
->output_offset
);
11695 val
-= p
- htab
->glink_eh_frame
->contents
;
11696 if (val
+ 0x80000000 > 0xffffffff)
11698 info
->callbacks
->einfo
11699 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11700 htab
->glink
->name
);
11703 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11706 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->rawsize
- 8, p
);
11708 /* Augmentation. */
11711 *p
++ = DW_CFA_advance_loc
+ 1;
11712 *p
++ = DW_CFA_register
;
11715 *p
++ = DW_CFA_advance_loc
+ 4;
11716 *p
++ = DW_CFA_restore_extended
;
11719 htab
->glink_eh_frame
->size
= p
- htab
->glink_eh_frame
->contents
;
11722 /* Build the stubs as directed by the stub hash table. */
11723 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11725 if (htab
->relbrlt
!= NULL
)
11726 htab
->relbrlt
->reloc_count
= 0;
11728 for (stub_sec
= htab
->stub_bfd
->sections
;
11730 stub_sec
= stub_sec
->next
)
11731 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11733 stub_sec_count
+= 1;
11734 if (stub_sec
->rawsize
!= stub_sec
->size
)
11738 if (stub_sec
!= NULL
11739 || htab
->glink
->rawsize
!= htab
->glink
->size
11740 || (htab
->glink_eh_frame
!= NULL
11741 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
11743 htab
->stub_error
= TRUE
;
11744 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
11747 if (htab
->stub_error
)
11752 *stats
= bfd_malloc (500);
11753 if (*stats
== NULL
)
11756 sprintf (*stats
, _("linker stubs in %u group%s\n"
11758 " toc adjust %lu\n"
11759 " long branch %lu\n"
11760 " long toc adj %lu\n"
11763 stub_sec_count
== 1 ? "" : "s",
11764 htab
->stub_count
[ppc_stub_long_branch
- 1],
11765 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11766 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11767 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11768 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11773 /* This function undoes the changes made by add_symbol_adjust. */
11776 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11778 struct ppc_link_hash_entry
*eh
;
11780 if (h
->root
.type
== bfd_link_hash_indirect
)
11783 eh
= (struct ppc_link_hash_entry
*) h
;
11784 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11787 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11792 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11794 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11797 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11800 /* What to do when ld finds relocations against symbols defined in
11801 discarded sections. */
11803 static unsigned int
11804 ppc64_elf_action_discarded (asection
*sec
)
11806 if (strcmp (".opd", sec
->name
) == 0)
11809 if (strcmp (".toc", sec
->name
) == 0)
11812 if (strcmp (".toc1", sec
->name
) == 0)
11815 return _bfd_elf_default_action_discarded (sec
);
11818 /* The RELOCATE_SECTION function is called by the ELF backend linker
11819 to handle the relocations for a section.
11821 The relocs are always passed as Rela structures; if the section
11822 actually uses Rel structures, the r_addend field will always be
11825 This function is responsible for adjust the section contents as
11826 necessary, and (if using Rela relocs and generating a
11827 relocatable output file) adjusting the reloc addend as
11830 This function does not have to worry about setting the reloc
11831 address or the reloc symbol index.
11833 LOCAL_SYMS is a pointer to the swapped in local symbols.
11835 LOCAL_SECTIONS is an array giving the section in the input file
11836 corresponding to the st_shndx field of each local symbol.
11838 The global hash table entry for the global symbols can be found
11839 via elf_sym_hashes (input_bfd).
11841 When generating relocatable output, this function must handle
11842 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11843 going to be the section symbol corresponding to the output
11844 section, which means that the addend must be adjusted
11848 ppc64_elf_relocate_section (bfd
*output_bfd
,
11849 struct bfd_link_info
*info
,
11851 asection
*input_section
,
11852 bfd_byte
*contents
,
11853 Elf_Internal_Rela
*relocs
,
11854 Elf_Internal_Sym
*local_syms
,
11855 asection
**local_sections
)
11857 struct ppc_link_hash_table
*htab
;
11858 Elf_Internal_Shdr
*symtab_hdr
;
11859 struct elf_link_hash_entry
**sym_hashes
;
11860 Elf_Internal_Rela
*rel
;
11861 Elf_Internal_Rela
*relend
;
11862 Elf_Internal_Rela outrel
;
11864 struct got_entry
**local_got_ents
;
11866 bfd_boolean ret
= TRUE
;
11867 bfd_boolean is_opd
;
11868 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11869 bfd_boolean is_power4
= FALSE
;
11870 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11872 /* Initialize howto table if needed. */
11873 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11876 htab
= ppc_hash_table (info
);
11880 /* Don't relocate stub sections. */
11881 if (input_section
->owner
== htab
->stub_bfd
)
11884 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11886 local_got_ents
= elf_local_got_ents (input_bfd
);
11887 TOCstart
= elf_gp (output_bfd
);
11888 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11889 sym_hashes
= elf_sym_hashes (input_bfd
);
11890 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11893 relend
= relocs
+ input_section
->reloc_count
;
11894 for (; rel
< relend
; rel
++)
11896 enum elf_ppc64_reloc_type r_type
;
11897 bfd_vma addend
, orig_addend
;
11898 bfd_reloc_status_type r
;
11899 Elf_Internal_Sym
*sym
;
11901 struct elf_link_hash_entry
*h_elf
;
11902 struct ppc_link_hash_entry
*h
;
11903 struct ppc_link_hash_entry
*fdh
;
11904 const char *sym_name
;
11905 unsigned long r_symndx
, toc_symndx
;
11906 bfd_vma toc_addend
;
11907 unsigned char tls_mask
, tls_gd
, tls_type
;
11908 unsigned char sym_type
;
11909 bfd_vma relocation
;
11910 bfd_boolean unresolved_reloc
;
11911 bfd_boolean warned
;
11914 struct ppc_stub_hash_entry
*stub_entry
;
11915 bfd_vma max_br_offset
;
11918 r_type
= ELF64_R_TYPE (rel
->r_info
);
11919 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11921 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11922 symbol of the previous ADDR64 reloc. The symbol gives us the
11923 proper TOC base to use. */
11924 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11926 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11928 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11934 unresolved_reloc
= FALSE
;
11936 orig_addend
= rel
->r_addend
;
11938 if (r_symndx
< symtab_hdr
->sh_info
)
11940 /* It's a local symbol. */
11941 struct _opd_sec_data
*opd
;
11943 sym
= local_syms
+ r_symndx
;
11944 sec
= local_sections
[r_symndx
];
11945 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11946 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11947 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11948 opd
= get_opd_info (sec
);
11949 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11951 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11956 /* If this is a relocation against the opd section sym
11957 and we have edited .opd, adjust the reloc addend so
11958 that ld -r and ld --emit-relocs output is correct.
11959 If it is a reloc against some other .opd symbol,
11960 then the symbol value will be adjusted later. */
11961 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11962 rel
->r_addend
+= adjust
;
11964 relocation
+= adjust
;
11970 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11971 r_symndx
, symtab_hdr
, sym_hashes
,
11972 h_elf
, sec
, relocation
,
11973 unresolved_reloc
, warned
);
11974 sym_name
= h_elf
->root
.root
.string
;
11975 sym_type
= h_elf
->type
;
11977 h
= (struct ppc_link_hash_entry
*) h_elf
;
11979 if (sec
!= NULL
&& elf_discarded_section (sec
))
11980 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
11982 ppc64_elf_howto_table
[r_type
],
11985 if (info
->relocatable
)
11988 /* TLS optimizations. Replace instruction sequences and relocs
11989 based on information we collected in tls_optimize. We edit
11990 RELOCS so that --emit-relocs will output something sensible
11991 for the final instruction stream. */
11996 tls_mask
= h
->tls_mask
;
11997 else if (local_got_ents
!= NULL
)
11999 struct plt_entry
**local_plt
= (struct plt_entry
**)
12000 (local_got_ents
+ symtab_hdr
->sh_info
);
12001 unsigned char *lgot_masks
= (unsigned char *)
12002 (local_plt
+ symtab_hdr
->sh_info
);
12003 tls_mask
= lgot_masks
[r_symndx
];
12006 && (r_type
== R_PPC64_TLS
12007 || r_type
== R_PPC64_TLSGD
12008 || r_type
== R_PPC64_TLSLD
))
12010 /* Check for toc tls entries. */
12011 unsigned char *toc_tls
;
12013 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12014 &local_syms
, rel
, input_bfd
))
12018 tls_mask
= *toc_tls
;
12021 /* Check that tls relocs are used with tls syms, and non-tls
12022 relocs are used with non-tls syms. */
12023 if (r_symndx
!= STN_UNDEF
12024 && r_type
!= R_PPC64_NONE
12026 || h
->elf
.root
.type
== bfd_link_hash_defined
12027 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
12028 && (IS_PPC64_TLS_RELOC (r_type
)
12029 != (sym_type
== STT_TLS
12030 || (sym_type
== STT_SECTION
12031 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
12034 && (r_type
== R_PPC64_TLS
12035 || r_type
== R_PPC64_TLSGD
12036 || r_type
== R_PPC64_TLSLD
))
12037 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12040 info
->callbacks
->einfo
12041 (!IS_PPC64_TLS_RELOC (r_type
)
12042 ? _("%P: %H: %s used with TLS symbol %s\n")
12043 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12044 input_bfd
, input_section
, rel
->r_offset
,
12045 ppc64_elf_howto_table
[r_type
]->name
,
12049 /* Ensure reloc mapping code below stays sane. */
12050 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
12051 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
12052 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
12053 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
12054 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
12055 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
12056 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
12057 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
12058 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
12059 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
12067 case R_PPC64_LO_DS_OPT
:
12068 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12069 if ((insn
& (0x3f << 26)) != 58u << 26)
12071 insn
+= (14u << 26) - (58u << 26);
12072 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12073 r_type
= R_PPC64_TOC16_LO
;
12074 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12077 case R_PPC64_TOC16
:
12078 case R_PPC64_TOC16_LO
:
12079 case R_PPC64_TOC16_DS
:
12080 case R_PPC64_TOC16_LO_DS
:
12082 /* Check for toc tls entries. */
12083 unsigned char *toc_tls
;
12086 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12087 &local_syms
, rel
, input_bfd
);
12093 tls_mask
= *toc_tls
;
12094 if (r_type
== R_PPC64_TOC16_DS
12095 || r_type
== R_PPC64_TOC16_LO_DS
)
12098 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
12103 /* If we found a GD reloc pair, then we might be
12104 doing a GD->IE transition. */
12107 tls_gd
= TLS_TPRELGD
;
12108 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12111 else if (retval
== 3)
12113 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12121 case R_PPC64_GOT_TPREL16_HI
:
12122 case R_PPC64_GOT_TPREL16_HA
:
12124 && (tls_mask
& TLS_TPREL
) == 0)
12126 rel
->r_offset
-= d_offset
;
12127 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12128 r_type
= R_PPC64_NONE
;
12129 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12133 case R_PPC64_GOT_TPREL16_DS
:
12134 case R_PPC64_GOT_TPREL16_LO_DS
:
12136 && (tls_mask
& TLS_TPREL
) == 0)
12139 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12141 insn
|= 0x3c0d0000; /* addis 0,13,0 */
12142 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12143 r_type
= R_PPC64_TPREL16_HA
;
12144 if (toc_symndx
!= 0)
12146 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12147 rel
->r_addend
= toc_addend
;
12148 /* We changed the symbol. Start over in order to
12149 get h, sym, sec etc. right. */
12154 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12160 && (tls_mask
& TLS_TPREL
) == 0)
12162 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
12163 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
12166 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12167 /* Was PPC64_TLS which sits on insn boundary, now
12168 PPC64_TPREL16_LO which is at low-order half-word. */
12169 rel
->r_offset
+= d_offset
;
12170 r_type
= R_PPC64_TPREL16_LO
;
12171 if (toc_symndx
!= 0)
12173 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12174 rel
->r_addend
= toc_addend
;
12175 /* We changed the symbol. Start over in order to
12176 get h, sym, sec etc. right. */
12181 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12185 case R_PPC64_GOT_TLSGD16_HI
:
12186 case R_PPC64_GOT_TLSGD16_HA
:
12187 tls_gd
= TLS_TPRELGD
;
12188 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12192 case R_PPC64_GOT_TLSLD16_HI
:
12193 case R_PPC64_GOT_TLSLD16_HA
:
12194 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12197 if ((tls_mask
& tls_gd
) != 0)
12198 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12199 + R_PPC64_GOT_TPREL16_DS
);
12202 rel
->r_offset
-= d_offset
;
12203 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12204 r_type
= R_PPC64_NONE
;
12206 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12210 case R_PPC64_GOT_TLSGD16
:
12211 case R_PPC64_GOT_TLSGD16_LO
:
12212 tls_gd
= TLS_TPRELGD
;
12213 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12217 case R_PPC64_GOT_TLSLD16
:
12218 case R_PPC64_GOT_TLSLD16_LO
:
12219 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12221 unsigned int insn1
, insn2
, insn3
;
12225 offset
= (bfd_vma
) -1;
12226 /* If not using the newer R_PPC64_TLSGD/LD to mark
12227 __tls_get_addr calls, we must trust that the call
12228 stays with its arg setup insns, ie. that the next
12229 reloc is the __tls_get_addr call associated with
12230 the current reloc. Edit both insns. */
12231 if (input_section
->has_tls_get_addr_call
12232 && rel
+ 1 < relend
12233 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
12234 htab
->tls_get_addr
,
12235 htab
->tls_get_addr_fd
))
12236 offset
= rel
[1].r_offset
;
12237 if ((tls_mask
& tls_gd
) != 0)
12240 insn1
= bfd_get_32 (output_bfd
,
12241 contents
+ rel
->r_offset
- d_offset
);
12242 insn1
&= (1 << 26) - (1 << 2);
12243 insn1
|= 58 << 26; /* ld */
12244 insn2
= 0x7c636a14; /* add 3,3,13 */
12245 if (offset
!= (bfd_vma
) -1)
12246 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12247 if ((tls_mask
& TLS_EXPLICIT
) == 0)
12248 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12249 + R_PPC64_GOT_TPREL16_DS
);
12251 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
12252 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12257 insn1
= 0x3c6d0000; /* addis 3,13,0 */
12258 insn2
= 0x38630000; /* addi 3,3,0 */
12261 /* Was an LD reloc. */
12263 sec
= local_sections
[toc_symndx
];
12265 r_symndx
< symtab_hdr
->sh_info
;
12267 if (local_sections
[r_symndx
] == sec
)
12269 if (r_symndx
>= symtab_hdr
->sh_info
)
12270 r_symndx
= STN_UNDEF
;
12271 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12272 if (r_symndx
!= STN_UNDEF
)
12273 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12274 + sec
->output_offset
12275 + sec
->output_section
->vma
);
12277 else if (toc_symndx
!= 0)
12279 r_symndx
= toc_symndx
;
12280 rel
->r_addend
= toc_addend
;
12282 r_type
= R_PPC64_TPREL16_HA
;
12283 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12284 if (offset
!= (bfd_vma
) -1)
12286 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12287 R_PPC64_TPREL16_LO
);
12288 rel
[1].r_offset
= offset
+ d_offset
;
12289 rel
[1].r_addend
= rel
->r_addend
;
12292 bfd_put_32 (output_bfd
, insn1
,
12293 contents
+ rel
->r_offset
- d_offset
);
12294 if (offset
!= (bfd_vma
) -1)
12296 insn3
= bfd_get_32 (output_bfd
,
12297 contents
+ offset
+ 4);
12299 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12301 rel
[1].r_offset
+= 4;
12302 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12305 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12307 if ((tls_mask
& tls_gd
) == 0
12308 && (tls_gd
== 0 || toc_symndx
!= 0))
12310 /* We changed the symbol. Start over in order
12311 to get h, sym, sec etc. right. */
12318 case R_PPC64_TLSGD
:
12319 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12321 unsigned int insn2
, insn3
;
12322 bfd_vma offset
= rel
->r_offset
;
12324 if ((tls_mask
& TLS_TPRELGD
) != 0)
12327 r_type
= R_PPC64_NONE
;
12328 insn2
= 0x7c636a14; /* add 3,3,13 */
12333 if (toc_symndx
!= 0)
12335 r_symndx
= toc_symndx
;
12336 rel
->r_addend
= toc_addend
;
12338 r_type
= R_PPC64_TPREL16_LO
;
12339 rel
->r_offset
= offset
+ d_offset
;
12340 insn2
= 0x38630000; /* addi 3,3,0 */
12342 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12343 /* Zap the reloc on the _tls_get_addr call too. */
12344 BFD_ASSERT (offset
== rel
[1].r_offset
);
12345 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12346 insn3
= bfd_get_32 (output_bfd
,
12347 contents
+ offset
+ 4);
12349 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12351 rel
->r_offset
+= 4;
12352 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12355 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12356 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12364 case R_PPC64_TLSLD
:
12365 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12367 unsigned int insn2
, insn3
;
12368 bfd_vma offset
= rel
->r_offset
;
12371 sec
= local_sections
[toc_symndx
];
12373 r_symndx
< symtab_hdr
->sh_info
;
12375 if (local_sections
[r_symndx
] == sec
)
12377 if (r_symndx
>= symtab_hdr
->sh_info
)
12378 r_symndx
= STN_UNDEF
;
12379 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12380 if (r_symndx
!= STN_UNDEF
)
12381 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12382 + sec
->output_offset
12383 + sec
->output_section
->vma
);
12385 r_type
= R_PPC64_TPREL16_LO
;
12386 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12387 rel
->r_offset
= offset
+ d_offset
;
12388 /* Zap the reloc on the _tls_get_addr call too. */
12389 BFD_ASSERT (offset
== rel
[1].r_offset
);
12390 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12391 insn2
= 0x38630000; /* addi 3,3,0 */
12392 insn3
= bfd_get_32 (output_bfd
,
12393 contents
+ offset
+ 4);
12395 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12397 rel
->r_offset
+= 4;
12398 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12401 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12407 case R_PPC64_DTPMOD64
:
12408 if (rel
+ 1 < relend
12409 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12410 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12412 if ((tls_mask
& TLS_GD
) == 0)
12414 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12415 if ((tls_mask
& TLS_TPRELGD
) != 0)
12416 r_type
= R_PPC64_TPREL64
;
12419 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12420 r_type
= R_PPC64_NONE
;
12422 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12427 if ((tls_mask
& TLS_LD
) == 0)
12429 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12430 r_type
= R_PPC64_NONE
;
12431 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12436 case R_PPC64_TPREL64
:
12437 if ((tls_mask
& TLS_TPREL
) == 0)
12439 r_type
= R_PPC64_NONE
;
12440 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12445 /* Handle other relocations that tweak non-addend part of insn. */
12447 max_br_offset
= 1 << 25;
12448 addend
= rel
->r_addend
;
12454 case R_PPC64_TOCSAVE
:
12455 if (relocation
+ addend
== (rel
->r_offset
12456 + input_section
->output_offset
12457 + input_section
->output_section
->vma
)
12458 && tocsave_find (htab
, NO_INSERT
,
12459 &local_syms
, rel
, input_bfd
))
12461 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12463 || insn
== CROR_151515
|| insn
== CROR_313131
)
12464 bfd_put_32 (input_bfd
, STD_R2_40R1
,
12465 contents
+ rel
->r_offset
);
12469 /* Branch taken prediction relocations. */
12470 case R_PPC64_ADDR14_BRTAKEN
:
12471 case R_PPC64_REL14_BRTAKEN
:
12472 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12475 /* Branch not taken prediction relocations. */
12476 case R_PPC64_ADDR14_BRNTAKEN
:
12477 case R_PPC64_REL14_BRNTAKEN
:
12478 insn
|= bfd_get_32 (output_bfd
,
12479 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12482 case R_PPC64_REL14
:
12483 max_br_offset
= 1 << 15;
12486 case R_PPC64_REL24
:
12487 /* Calls to functions with a different TOC, such as calls to
12488 shared objects, need to alter the TOC pointer. This is
12489 done using a linkage stub. A REL24 branching to these
12490 linkage stubs needs to be followed by a nop, as the nop
12491 will be replaced with an instruction to restore the TOC
12496 && h
->oh
->is_func_descriptor
)
12497 fdh
= ppc_follow_link (h
->oh
);
12498 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12499 if (stub_entry
!= NULL
12500 && (stub_entry
->stub_type
== ppc_stub_plt_call
12501 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12502 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12504 bfd_boolean can_plt_call
= FALSE
;
12506 if (rel
->r_offset
+ 8 <= input_section
->size
)
12509 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12511 || nop
== CROR_151515
|| nop
== CROR_313131
)
12514 && (h
== htab
->tls_get_addr_fd
12515 || h
== htab
->tls_get_addr
)
12516 && !htab
->no_tls_get_addr_opt
)
12518 /* Special stub used, leave nop alone. */
12521 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12522 contents
+ rel
->r_offset
+ 4);
12523 can_plt_call
= TRUE
;
12529 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12531 /* If this is a plain branch rather than a branch
12532 and link, don't require a nop. However, don't
12533 allow tail calls in a shared library as they
12534 will result in r2 being corrupted. */
12536 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12537 if (info
->executable
&& (br
& 1) == 0)
12538 can_plt_call
= TRUE
;
12543 && strcmp (h
->elf
.root
.root
.string
,
12544 ".__libc_start_main") == 0)
12546 /* Allow crt1 branch to go via a toc adjusting stub. */
12547 can_plt_call
= TRUE
;
12551 if (strcmp (input_section
->output_section
->name
,
12553 || strcmp (input_section
->output_section
->name
,
12555 info
->callbacks
->einfo
12556 (_("%P: %H: automatic multiple TOCs "
12557 "not supported using your crt files; "
12558 "recompile with -mminimal-toc or upgrade gcc\n"),
12559 input_bfd
, input_section
, rel
->r_offset
);
12561 info
->callbacks
->einfo
12562 (_("%P: %H: sibling call optimization to `%s' "
12563 "does not allow automatic multiple TOCs; "
12564 "recompile with -mminimal-toc or "
12565 "-fno-optimize-sibling-calls, "
12566 "or make `%s' extern\n"),
12567 input_bfd
, input_section
, rel
->r_offset
,
12570 bfd_set_error (bfd_error_bad_value
);
12576 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12577 unresolved_reloc
= FALSE
;
12580 if ((stub_entry
== NULL
12581 || stub_entry
->stub_type
== ppc_stub_long_branch
12582 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12583 && get_opd_info (sec
) != NULL
)
12585 /* The branch destination is the value of the opd entry. */
12586 bfd_vma off
= (relocation
+ addend
12587 - sec
->output_section
->vma
12588 - sec
->output_offset
);
12589 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12590 if (dest
!= (bfd_vma
) -1)
12597 /* If the branch is out of reach we ought to have a long
12599 from
= (rel
->r_offset
12600 + input_section
->output_offset
12601 + input_section
->output_section
->vma
);
12603 if (stub_entry
!= NULL
12604 && (stub_entry
->stub_type
== ppc_stub_long_branch
12605 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12606 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12607 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12608 || (relocation
+ addend
- from
+ max_br_offset
12609 < 2 * max_br_offset
)))
12610 /* Don't use the stub if this branch is in range. */
12613 if (stub_entry
!= NULL
)
12615 /* Munge up the value and addend so that we call the stub
12616 rather than the procedure directly. */
12617 relocation
= (stub_entry
->stub_offset
12618 + stub_entry
->stub_sec
->output_offset
12619 + stub_entry
->stub_sec
->output_section
->vma
);
12622 if (stub_entry
->stub_type
== ppc_stub_plt_call
12623 && rel
+ 1 < relend
12624 && rel
[1].r_offset
== rel
->r_offset
+ 4
12625 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
12633 /* Set 'a' bit. This is 0b00010 in BO field for branch
12634 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12635 for branch on CTR insns (BO == 1a00t or 1a01t). */
12636 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12637 insn
|= 0x02 << 21;
12638 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12639 insn
|= 0x08 << 21;
12645 /* Invert 'y' bit if not the default. */
12646 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12647 insn
^= 0x01 << 21;
12650 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12653 /* NOP out calls to undefined weak functions.
12654 We can thus call a weak function without first
12655 checking whether the function is defined. */
12657 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12658 && h
->elf
.dynindx
== -1
12659 && r_type
== R_PPC64_REL24
12663 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12669 /* Set `addend'. */
12674 info
->callbacks
->einfo
12675 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12676 input_bfd
, (int) r_type
, sym_name
);
12678 bfd_set_error (bfd_error_bad_value
);
12684 case R_PPC64_TLSGD
:
12685 case R_PPC64_TLSLD
:
12686 case R_PPC64_TOCSAVE
:
12687 case R_PPC64_GNU_VTINHERIT
:
12688 case R_PPC64_GNU_VTENTRY
:
12691 /* GOT16 relocations. Like an ADDR16 using the symbol's
12692 address in the GOT as relocation value instead of the
12693 symbol's value itself. Also, create a GOT entry for the
12694 symbol and put the symbol value there. */
12695 case R_PPC64_GOT_TLSGD16
:
12696 case R_PPC64_GOT_TLSGD16_LO
:
12697 case R_PPC64_GOT_TLSGD16_HI
:
12698 case R_PPC64_GOT_TLSGD16_HA
:
12699 tls_type
= TLS_TLS
| TLS_GD
;
12702 case R_PPC64_GOT_TLSLD16
:
12703 case R_PPC64_GOT_TLSLD16_LO
:
12704 case R_PPC64_GOT_TLSLD16_HI
:
12705 case R_PPC64_GOT_TLSLD16_HA
:
12706 tls_type
= TLS_TLS
| TLS_LD
;
12709 case R_PPC64_GOT_TPREL16_DS
:
12710 case R_PPC64_GOT_TPREL16_LO_DS
:
12711 case R_PPC64_GOT_TPREL16_HI
:
12712 case R_PPC64_GOT_TPREL16_HA
:
12713 tls_type
= TLS_TLS
| TLS_TPREL
;
12716 case R_PPC64_GOT_DTPREL16_DS
:
12717 case R_PPC64_GOT_DTPREL16_LO_DS
:
12718 case R_PPC64_GOT_DTPREL16_HI
:
12719 case R_PPC64_GOT_DTPREL16_HA
:
12720 tls_type
= TLS_TLS
| TLS_DTPREL
;
12723 case R_PPC64_GOT16
:
12724 case R_PPC64_GOT16_LO
:
12725 case R_PPC64_GOT16_HI
:
12726 case R_PPC64_GOT16_HA
:
12727 case R_PPC64_GOT16_DS
:
12728 case R_PPC64_GOT16_LO_DS
:
12731 /* Relocation is to the entry for this symbol in the global
12736 unsigned long indx
= 0;
12737 struct got_entry
*ent
;
12739 if (tls_type
== (TLS_TLS
| TLS_LD
)
12741 || !h
->elf
.def_dynamic
))
12742 ent
= ppc64_tlsld_got (input_bfd
);
12748 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12749 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12752 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12753 /* This is actually a static link, or it is a
12754 -Bsymbolic link and the symbol is defined
12755 locally, or the symbol was forced to be local
12756 because of a version file. */
12760 indx
= h
->elf
.dynindx
;
12761 unresolved_reloc
= FALSE
;
12763 ent
= h
->elf
.got
.glist
;
12767 if (local_got_ents
== NULL
)
12769 ent
= local_got_ents
[r_symndx
];
12772 for (; ent
!= NULL
; ent
= ent
->next
)
12773 if (ent
->addend
== orig_addend
12774 && ent
->owner
== input_bfd
12775 && ent
->tls_type
== tls_type
)
12781 if (ent
->is_indirect
)
12782 ent
= ent
->got
.ent
;
12783 offp
= &ent
->got
.offset
;
12784 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12788 /* The offset must always be a multiple of 8. We use the
12789 least significant bit to record whether we have already
12790 processed this entry. */
12792 if ((off
& 1) != 0)
12796 /* Generate relocs for the dynamic linker, except in
12797 the case of TLSLD where we'll use one entry per
12805 ? h
->elf
.type
== STT_GNU_IFUNC
12806 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12807 if ((info
->shared
|| indx
!= 0)
12809 || (tls_type
== (TLS_TLS
| TLS_LD
)
12810 && !h
->elf
.def_dynamic
)
12811 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12812 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12813 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12815 relgot
= htab
->reliplt
;
12816 if (relgot
!= NULL
)
12818 outrel
.r_offset
= (got
->output_section
->vma
12819 + got
->output_offset
12821 outrel
.r_addend
= addend
;
12822 if (tls_type
& (TLS_LD
| TLS_GD
))
12824 outrel
.r_addend
= 0;
12825 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12826 if (tls_type
== (TLS_TLS
| TLS_GD
))
12828 loc
= relgot
->contents
;
12829 loc
+= (relgot
->reloc_count
++
12830 * sizeof (Elf64_External_Rela
));
12831 bfd_elf64_swap_reloca_out (output_bfd
,
12833 outrel
.r_offset
+= 8;
12834 outrel
.r_addend
= addend
;
12836 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12839 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12840 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12841 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12842 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12843 else if (indx
!= 0)
12844 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12848 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12850 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12852 /* Write the .got section contents for the sake
12854 loc
= got
->contents
+ off
;
12855 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12859 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12861 outrel
.r_addend
+= relocation
;
12862 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12863 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12865 loc
= relgot
->contents
;
12866 loc
+= (relgot
->reloc_count
++
12867 * sizeof (Elf64_External_Rela
));
12868 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12871 /* Init the .got section contents here if we're not
12872 emitting a reloc. */
12875 relocation
+= addend
;
12876 if (tls_type
== (TLS_TLS
| TLS_LD
))
12878 else if (tls_type
!= 0)
12880 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12881 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12882 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12884 if (tls_type
== (TLS_TLS
| TLS_GD
))
12886 bfd_put_64 (output_bfd
, relocation
,
12887 got
->contents
+ off
+ 8);
12892 bfd_put_64 (output_bfd
, relocation
,
12893 got
->contents
+ off
);
12897 if (off
>= (bfd_vma
) -2)
12900 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12901 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12905 case R_PPC64_PLT16_HA
:
12906 case R_PPC64_PLT16_HI
:
12907 case R_PPC64_PLT16_LO
:
12908 case R_PPC64_PLT32
:
12909 case R_PPC64_PLT64
:
12910 /* Relocation is to the entry for this symbol in the
12911 procedure linkage table. */
12913 /* Resolve a PLT reloc against a local symbol directly,
12914 without using the procedure linkage table. */
12918 /* It's possible that we didn't make a PLT entry for this
12919 symbol. This happens when statically linking PIC code,
12920 or when using -Bsymbolic. Go find a match if there is a
12922 if (htab
->plt
!= NULL
)
12924 struct plt_entry
*ent
;
12925 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12926 if (ent
->addend
== orig_addend
12927 && ent
->plt
.offset
!= (bfd_vma
) -1)
12929 relocation
= (htab
->plt
->output_section
->vma
12930 + htab
->plt
->output_offset
12931 + ent
->plt
.offset
);
12932 unresolved_reloc
= FALSE
;
12938 /* Relocation value is TOC base. */
12939 relocation
= TOCstart
;
12940 if (r_symndx
== STN_UNDEF
)
12941 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12942 else if (unresolved_reloc
)
12944 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12945 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12947 unresolved_reloc
= TRUE
;
12950 /* TOC16 relocs. We want the offset relative to the TOC base,
12951 which is the address of the start of the TOC plus 0x8000.
12952 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12954 case R_PPC64_TOC16
:
12955 case R_PPC64_TOC16_LO
:
12956 case R_PPC64_TOC16_HI
:
12957 case R_PPC64_TOC16_DS
:
12958 case R_PPC64_TOC16_LO_DS
:
12959 case R_PPC64_TOC16_HA
:
12960 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12963 /* Relocate against the beginning of the section. */
12964 case R_PPC64_SECTOFF
:
12965 case R_PPC64_SECTOFF_LO
:
12966 case R_PPC64_SECTOFF_HI
:
12967 case R_PPC64_SECTOFF_DS
:
12968 case R_PPC64_SECTOFF_LO_DS
:
12969 case R_PPC64_SECTOFF_HA
:
12971 addend
-= sec
->output_section
->vma
;
12974 case R_PPC64_REL16
:
12975 case R_PPC64_REL16_LO
:
12976 case R_PPC64_REL16_HI
:
12977 case R_PPC64_REL16_HA
:
12980 case R_PPC64_REL14
:
12981 case R_PPC64_REL14_BRNTAKEN
:
12982 case R_PPC64_REL14_BRTAKEN
:
12983 case R_PPC64_REL24
:
12986 case R_PPC64_TPREL16
:
12987 case R_PPC64_TPREL16_LO
:
12988 case R_PPC64_TPREL16_HI
:
12989 case R_PPC64_TPREL16_HA
:
12990 case R_PPC64_TPREL16_DS
:
12991 case R_PPC64_TPREL16_LO_DS
:
12992 case R_PPC64_TPREL16_HIGHER
:
12993 case R_PPC64_TPREL16_HIGHERA
:
12994 case R_PPC64_TPREL16_HIGHEST
:
12995 case R_PPC64_TPREL16_HIGHESTA
:
12997 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12998 && h
->elf
.dynindx
== -1)
13000 /* Make this relocation against an undefined weak symbol
13001 resolve to zero. This is really just a tweak, since
13002 code using weak externs ought to check that they are
13003 defined before using them. */
13004 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
13006 insn
= bfd_get_32 (output_bfd
, p
);
13007 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
13009 bfd_put_32 (output_bfd
, insn
, p
);
13012 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13014 /* The TPREL16 relocs shouldn't really be used in shared
13015 libs as they will result in DT_TEXTREL being set, but
13016 support them anyway. */
13020 case R_PPC64_DTPREL16
:
13021 case R_PPC64_DTPREL16_LO
:
13022 case R_PPC64_DTPREL16_HI
:
13023 case R_PPC64_DTPREL16_HA
:
13024 case R_PPC64_DTPREL16_DS
:
13025 case R_PPC64_DTPREL16_LO_DS
:
13026 case R_PPC64_DTPREL16_HIGHER
:
13027 case R_PPC64_DTPREL16_HIGHERA
:
13028 case R_PPC64_DTPREL16_HIGHEST
:
13029 case R_PPC64_DTPREL16_HIGHESTA
:
13030 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13033 case R_PPC64_DTPMOD64
:
13038 case R_PPC64_TPREL64
:
13039 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13042 case R_PPC64_DTPREL64
:
13043 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13046 /* Relocations that may need to be propagated if this is a
13048 case R_PPC64_REL30
:
13049 case R_PPC64_REL32
:
13050 case R_PPC64_REL64
:
13051 case R_PPC64_ADDR14
:
13052 case R_PPC64_ADDR14_BRNTAKEN
:
13053 case R_PPC64_ADDR14_BRTAKEN
:
13054 case R_PPC64_ADDR16
:
13055 case R_PPC64_ADDR16_DS
:
13056 case R_PPC64_ADDR16_HA
:
13057 case R_PPC64_ADDR16_HI
:
13058 case R_PPC64_ADDR16_HIGHER
:
13059 case R_PPC64_ADDR16_HIGHERA
:
13060 case R_PPC64_ADDR16_HIGHEST
:
13061 case R_PPC64_ADDR16_HIGHESTA
:
13062 case R_PPC64_ADDR16_LO
:
13063 case R_PPC64_ADDR16_LO_DS
:
13064 case R_PPC64_ADDR24
:
13065 case R_PPC64_ADDR32
:
13066 case R_PPC64_ADDR64
:
13067 case R_PPC64_UADDR16
:
13068 case R_PPC64_UADDR32
:
13069 case R_PPC64_UADDR64
:
13071 if ((input_section
->flags
& SEC_ALLOC
) == 0)
13074 if (NO_OPD_RELOCS
&& is_opd
)
13079 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13080 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
13081 && (must_be_dyn_reloc (info
, r_type
)
13082 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
13083 || (ELIMINATE_COPY_RELOCS
13086 && h
->elf
.dynindx
!= -1
13087 && !h
->elf
.non_got_ref
13088 && !h
->elf
.def_regular
)
13091 ? h
->elf
.type
== STT_GNU_IFUNC
13092 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
13094 bfd_boolean skip
, relocate
;
13098 /* When generating a dynamic object, these relocations
13099 are copied into the output file to be resolved at run
13105 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
13106 input_section
, rel
->r_offset
);
13107 if (out_off
== (bfd_vma
) -1)
13109 else if (out_off
== (bfd_vma
) -2)
13110 skip
= TRUE
, relocate
= TRUE
;
13111 out_off
+= (input_section
->output_section
->vma
13112 + input_section
->output_offset
);
13113 outrel
.r_offset
= out_off
;
13114 outrel
.r_addend
= rel
->r_addend
;
13116 /* Optimize unaligned reloc use. */
13117 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
13118 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
13119 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
13120 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
13121 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
13122 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
13123 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
13124 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
13125 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
13128 memset (&outrel
, 0, sizeof outrel
);
13129 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
13131 && r_type
!= R_PPC64_TOC
)
13132 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
13135 /* This symbol is local, or marked to become local,
13136 or this is an opd section reloc which must point
13137 at a local function. */
13138 outrel
.r_addend
+= relocation
;
13139 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
13141 if (is_opd
&& h
!= NULL
)
13143 /* Lie about opd entries. This case occurs
13144 when building shared libraries and we
13145 reference a function in another shared
13146 lib. The same thing happens for a weak
13147 definition in an application that's
13148 overridden by a strong definition in a
13149 shared lib. (I believe this is a generic
13150 bug in binutils handling of weak syms.)
13151 In these cases we won't use the opd
13152 entry in this lib. */
13153 unresolved_reloc
= FALSE
;
13156 && r_type
== R_PPC64_ADDR64
13158 ? h
->elf
.type
== STT_GNU_IFUNC
13159 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
13160 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13163 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13165 /* We need to relocate .opd contents for ld.so.
13166 Prelink also wants simple and consistent rules
13167 for relocs. This make all RELATIVE relocs have
13168 *r_offset equal to r_addend. */
13177 ? h
->elf
.type
== STT_GNU_IFUNC
13178 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13180 info
->callbacks
->einfo
13181 (_("%P: %H: relocation %s for indirect "
13182 "function %s unsupported\n"),
13183 input_bfd
, input_section
, rel
->r_offset
,
13184 ppc64_elf_howto_table
[r_type
]->name
,
13188 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
13190 else if (sec
== NULL
|| sec
->owner
== NULL
)
13192 bfd_set_error (bfd_error_bad_value
);
13199 osec
= sec
->output_section
;
13200 indx
= elf_section_data (osec
)->dynindx
;
13204 if ((osec
->flags
& SEC_READONLY
) == 0
13205 && htab
->elf
.data_index_section
!= NULL
)
13206 osec
= htab
->elf
.data_index_section
;
13208 osec
= htab
->elf
.text_index_section
;
13209 indx
= elf_section_data (osec
)->dynindx
;
13211 BFD_ASSERT (indx
!= 0);
13213 /* We are turning this relocation into one
13214 against a section symbol, so subtract out
13215 the output section's address but not the
13216 offset of the input section in the output
13218 outrel
.r_addend
-= osec
->vma
;
13221 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
13225 sreloc
= elf_section_data (input_section
)->sreloc
;
13226 if (!htab
->elf
.dynamic_sections_created
)
13227 sreloc
= htab
->reliplt
;
13228 if (sreloc
== NULL
)
13231 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
13234 loc
= sreloc
->contents
;
13235 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13236 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13238 /* If this reloc is against an external symbol, it will
13239 be computed at runtime, so there's no need to do
13240 anything now. However, for the sake of prelink ensure
13241 that the section contents are a known value. */
13244 unresolved_reloc
= FALSE
;
13245 /* The value chosen here is quite arbitrary as ld.so
13246 ignores section contents except for the special
13247 case of .opd where the contents might be accessed
13248 before relocation. Choose zero, as that won't
13249 cause reloc overflow. */
13252 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13253 to improve backward compatibility with older
13255 if (r_type
== R_PPC64_ADDR64
)
13256 addend
= outrel
.r_addend
;
13257 /* Adjust pc_relative relocs to have zero in *r_offset. */
13258 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
13259 addend
= (input_section
->output_section
->vma
13260 + input_section
->output_offset
13267 case R_PPC64_GLOB_DAT
:
13268 case R_PPC64_JMP_SLOT
:
13269 case R_PPC64_JMP_IREL
:
13270 case R_PPC64_RELATIVE
:
13271 /* We shouldn't ever see these dynamic relocs in relocatable
13273 /* Fall through. */
13275 case R_PPC64_PLTGOT16
:
13276 case R_PPC64_PLTGOT16_DS
:
13277 case R_PPC64_PLTGOT16_HA
:
13278 case R_PPC64_PLTGOT16_HI
:
13279 case R_PPC64_PLTGOT16_LO
:
13280 case R_PPC64_PLTGOT16_LO_DS
:
13281 case R_PPC64_PLTREL32
:
13282 case R_PPC64_PLTREL64
:
13283 /* These ones haven't been implemented yet. */
13285 info
->callbacks
->einfo
13286 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13288 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
13290 bfd_set_error (bfd_error_invalid_operation
);
13295 /* Multi-instruction sequences that access the TOC can be
13296 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13297 to nop; addi rb,r2,x; */
13303 case R_PPC64_GOT_TLSLD16_HI
:
13304 case R_PPC64_GOT_TLSGD16_HI
:
13305 case R_PPC64_GOT_TPREL16_HI
:
13306 case R_PPC64_GOT_DTPREL16_HI
:
13307 case R_PPC64_GOT16_HI
:
13308 case R_PPC64_TOC16_HI
:
13309 /* These relocs would only be useful if building up an
13310 offset to later add to r2, perhaps in an indexed
13311 addressing mode instruction. Don't try to optimize.
13312 Unfortunately, the possibility of someone building up an
13313 offset like this or even with the HA relocs, means that
13314 we need to check the high insn when optimizing the low
13318 case R_PPC64_GOT_TLSLD16_HA
:
13319 case R_PPC64_GOT_TLSGD16_HA
:
13320 case R_PPC64_GOT_TPREL16_HA
:
13321 case R_PPC64_GOT_DTPREL16_HA
:
13322 case R_PPC64_GOT16_HA
:
13323 case R_PPC64_TOC16_HA
:
13324 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13325 && !ppc64_elf_tdata (input_bfd
)->ha_relocs_not_using_r2
)
13327 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13328 bfd_put_32 (input_bfd
, NOP
, p
);
13332 case R_PPC64_GOT_TLSLD16_LO
:
13333 case R_PPC64_GOT_TLSGD16_LO
:
13334 case R_PPC64_GOT_TPREL16_LO_DS
:
13335 case R_PPC64_GOT_DTPREL16_LO_DS
:
13336 case R_PPC64_GOT16_LO
:
13337 case R_PPC64_GOT16_LO_DS
:
13338 case R_PPC64_TOC16_LO
:
13339 case R_PPC64_TOC16_LO_DS
:
13340 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13341 && !ppc64_elf_tdata (input_bfd
)->ha_relocs_not_using_r2
)
13343 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13344 insn
= bfd_get_32 (input_bfd
, p
);
13345 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
13346 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
13347 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
13348 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
13349 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
13350 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
13351 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
13352 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
13353 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
13354 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
13355 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
13356 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
13357 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
13358 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
13359 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13360 && (insn
& 3) != 1)
13361 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
13362 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
13364 insn
&= ~(0x1f << 16);
13366 bfd_put_32 (input_bfd
, insn
, p
);
13372 /* Do any further special processing. */
13378 case R_PPC64_ADDR16_HA
:
13379 case R_PPC64_REL16_HA
:
13380 case R_PPC64_ADDR16_HIGHERA
:
13381 case R_PPC64_ADDR16_HIGHESTA
:
13382 case R_PPC64_TOC16_HA
:
13383 case R_PPC64_SECTOFF_HA
:
13384 case R_PPC64_TPREL16_HA
:
13385 case R_PPC64_DTPREL16_HA
:
13386 case R_PPC64_TPREL16_HIGHER
:
13387 case R_PPC64_TPREL16_HIGHERA
:
13388 case R_PPC64_TPREL16_HIGHEST
:
13389 case R_PPC64_TPREL16_HIGHESTA
:
13390 case R_PPC64_DTPREL16_HIGHER
:
13391 case R_PPC64_DTPREL16_HIGHERA
:
13392 case R_PPC64_DTPREL16_HIGHEST
:
13393 case R_PPC64_DTPREL16_HIGHESTA
:
13394 /* It's just possible that this symbol is a weak symbol
13395 that's not actually defined anywhere. In that case,
13396 'sec' would be NULL, and we should leave the symbol
13397 alone (it will be set to zero elsewhere in the link). */
13402 case R_PPC64_GOT16_HA
:
13403 case R_PPC64_PLTGOT16_HA
:
13404 case R_PPC64_PLT16_HA
:
13405 case R_PPC64_GOT_TLSGD16_HA
:
13406 case R_PPC64_GOT_TLSLD16_HA
:
13407 case R_PPC64_GOT_TPREL16_HA
:
13408 case R_PPC64_GOT_DTPREL16_HA
:
13409 /* Add 0x10000 if sign bit in 0:15 is set.
13410 Bits 0:15 are not used. */
13414 case R_PPC64_ADDR16_DS
:
13415 case R_PPC64_ADDR16_LO_DS
:
13416 case R_PPC64_GOT16_DS
:
13417 case R_PPC64_GOT16_LO_DS
:
13418 case R_PPC64_PLT16_LO_DS
:
13419 case R_PPC64_SECTOFF_DS
:
13420 case R_PPC64_SECTOFF_LO_DS
:
13421 case R_PPC64_TOC16_DS
:
13422 case R_PPC64_TOC16_LO_DS
:
13423 case R_PPC64_PLTGOT16_DS
:
13424 case R_PPC64_PLTGOT16_LO_DS
:
13425 case R_PPC64_GOT_TPREL16_DS
:
13426 case R_PPC64_GOT_TPREL16_LO_DS
:
13427 case R_PPC64_GOT_DTPREL16_DS
:
13428 case R_PPC64_GOT_DTPREL16_LO_DS
:
13429 case R_PPC64_TPREL16_DS
:
13430 case R_PPC64_TPREL16_LO_DS
:
13431 case R_PPC64_DTPREL16_DS
:
13432 case R_PPC64_DTPREL16_LO_DS
:
13433 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13435 /* If this reloc is against an lq insn, then the value must be
13436 a multiple of 16. This is somewhat of a hack, but the
13437 "correct" way to do this by defining _DQ forms of all the
13438 _DS relocs bloats all reloc switches in this file. It
13439 doesn't seem to make much sense to use any of these relocs
13440 in data, so testing the insn should be safe. */
13441 if ((insn
& (0x3f << 26)) == (56u << 26))
13443 if (((relocation
+ addend
) & mask
) != 0)
13445 info
->callbacks
->einfo
13446 (_("%P: %H: error: %s not a multiple of %u\n"),
13447 input_bfd
, input_section
, rel
->r_offset
,
13448 ppc64_elf_howto_table
[r_type
]->name
,
13450 bfd_set_error (bfd_error_bad_value
);
13457 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13458 because such sections are not SEC_ALLOC and thus ld.so will
13459 not process them. */
13460 if (unresolved_reloc
13461 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13462 && h
->elf
.def_dynamic
)
13463 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
13464 rel
->r_offset
) != (bfd_vma
) -1)
13466 info
->callbacks
->einfo
13467 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13468 input_bfd
, input_section
, rel
->r_offset
,
13469 ppc64_elf_howto_table
[(int) r_type
]->name
,
13470 h
->elf
.root
.root
.string
);
13474 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13482 if (r
!= bfd_reloc_ok
)
13484 if (sym_name
== NULL
)
13485 sym_name
= "(null)";
13486 if (r
== bfd_reloc_overflow
)
13491 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13492 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13494 /* Assume this is a call protected by other code that
13495 detects the symbol is undefined. If this is the case,
13496 we can safely ignore the overflow. If not, the
13497 program is hosed anyway, and a little warning isn't
13503 if (!((*info
->callbacks
->reloc_overflow
)
13504 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13505 ppc64_elf_howto_table
[r_type
]->name
,
13506 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13511 info
->callbacks
->einfo
13512 (_("%P: %H: %s reloc against `%s': error %d\n"),
13513 input_bfd
, input_section
, rel
->r_offset
,
13514 ppc64_elf_howto_table
[r_type
]->name
,
13522 /* If we're emitting relocations, then shortly after this function
13523 returns, reloc offsets and addends for this section will be
13524 adjusted. Worse, reloc symbol indices will be for the output
13525 file rather than the input. Save a copy of the relocs for
13526 opd_entry_value. */
13527 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13530 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13531 rel
= bfd_alloc (input_bfd
, amt
);
13532 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13533 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13536 memcpy (rel
, relocs
, amt
);
13541 /* Adjust the value of any local symbols in opd sections. */
13544 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13545 const char *name ATTRIBUTE_UNUSED
,
13546 Elf_Internal_Sym
*elfsym
,
13547 asection
*input_sec
,
13548 struct elf_link_hash_entry
*h
)
13550 struct _opd_sec_data
*opd
;
13557 opd
= get_opd_info (input_sec
);
13558 if (opd
== NULL
|| opd
->adjust
== NULL
)
13561 value
= elfsym
->st_value
- input_sec
->output_offset
;
13562 if (!info
->relocatable
)
13563 value
-= input_sec
->output_section
->vma
;
13565 adjust
= opd
->adjust
[value
/ 8];
13569 elfsym
->st_value
+= adjust
;
13573 /* Finish up dynamic symbol handling. We set the contents of various
13574 dynamic sections here. */
13577 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13578 struct bfd_link_info
*info
,
13579 struct elf_link_hash_entry
*h
,
13580 Elf_Internal_Sym
*sym
)
13582 struct ppc_link_hash_table
*htab
;
13583 struct plt_entry
*ent
;
13584 Elf_Internal_Rela rela
;
13587 htab
= ppc_hash_table (info
);
13591 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13592 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13594 /* This symbol has an entry in the procedure linkage
13595 table. Set it up. */
13596 if (!htab
->elf
.dynamic_sections_created
13597 || h
->dynindx
== -1)
13599 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13601 && (h
->root
.type
== bfd_link_hash_defined
13602 || h
->root
.type
== bfd_link_hash_defweak
));
13603 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13604 + htab
->iplt
->output_offset
13605 + ent
->plt
.offset
);
13606 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13607 rela
.r_addend
= (h
->root
.u
.def
.value
13608 + h
->root
.u
.def
.section
->output_offset
13609 + h
->root
.u
.def
.section
->output_section
->vma
13611 loc
= (htab
->reliplt
->contents
13612 + (htab
->reliplt
->reloc_count
++
13613 * sizeof (Elf64_External_Rela
)));
13617 rela
.r_offset
= (htab
->plt
->output_section
->vma
13618 + htab
->plt
->output_offset
13619 + ent
->plt
.offset
);
13620 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13621 rela
.r_addend
= ent
->addend
;
13622 loc
= (htab
->relplt
->contents
13623 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13624 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13626 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13631 /* This symbol needs a copy reloc. Set it up. */
13633 if (h
->dynindx
== -1
13634 || (h
->root
.type
!= bfd_link_hash_defined
13635 && h
->root
.type
!= bfd_link_hash_defweak
)
13636 || htab
->relbss
== NULL
)
13639 rela
.r_offset
= (h
->root
.u
.def
.value
13640 + h
->root
.u
.def
.section
->output_section
->vma
13641 + h
->root
.u
.def
.section
->output_offset
);
13642 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13644 loc
= htab
->relbss
->contents
;
13645 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13646 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13649 /* Mark some specially defined symbols as absolute. */
13650 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13651 sym
->st_shndx
= SHN_ABS
;
13656 /* Used to decide how to sort relocs in an optimal manner for the
13657 dynamic linker, before writing them out. */
13659 static enum elf_reloc_type_class
13660 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13662 enum elf_ppc64_reloc_type r_type
;
13664 r_type
= ELF64_R_TYPE (rela
->r_info
);
13667 case R_PPC64_RELATIVE
:
13668 return reloc_class_relative
;
13669 case R_PPC64_JMP_SLOT
:
13670 return reloc_class_plt
;
13672 return reloc_class_copy
;
13674 return reloc_class_normal
;
13678 /* Finish up the dynamic sections. */
13681 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13682 struct bfd_link_info
*info
)
13684 struct ppc_link_hash_table
*htab
;
13688 htab
= ppc_hash_table (info
);
13692 dynobj
= htab
->elf
.dynobj
;
13693 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13695 if (htab
->elf
.dynamic_sections_created
)
13697 Elf64_External_Dyn
*dyncon
, *dynconend
;
13699 if (sdyn
== NULL
|| htab
->got
== NULL
)
13702 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13703 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13704 for (; dyncon
< dynconend
; dyncon
++)
13706 Elf_Internal_Dyn dyn
;
13709 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13716 case DT_PPC64_GLINK
:
13718 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13719 /* We stupidly defined DT_PPC64_GLINK to be the start
13720 of glink rather than the first entry point, which is
13721 what ld.so needs, and now have a bigger stub to
13722 support automatic multiple TOCs. */
13723 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13727 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13730 dyn
.d_un
.d_ptr
= s
->vma
;
13733 case DT_PPC64_OPDSZ
:
13734 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13737 dyn
.d_un
.d_val
= s
->size
;
13742 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13747 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13751 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13755 /* Don't count procedure linkage table relocs in the
13756 overall reloc count. */
13760 dyn
.d_un
.d_val
-= s
->size
;
13764 /* We may not be using the standard ELF linker script.
13765 If .rela.plt is the first .rela section, we adjust
13766 DT_RELA to not include it. */
13770 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13772 dyn
.d_un
.d_ptr
+= s
->size
;
13776 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13780 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13782 /* Fill in the first entry in the global offset table.
13783 We use it to hold the link-time TOCbase. */
13784 bfd_put_64 (output_bfd
,
13785 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13786 htab
->got
->contents
);
13788 /* Set .got entry size. */
13789 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13792 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13794 /* Set .plt entry size. */
13795 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13799 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13800 brlt ourselves if emitrelocations. */
13801 if (htab
->brlt
!= NULL
13802 && htab
->brlt
->reloc_count
!= 0
13803 && !_bfd_elf_link_output_relocs (output_bfd
,
13805 elf_section_data (htab
->brlt
)->rela
.hdr
,
13806 elf_section_data (htab
->brlt
)->relocs
,
13810 if (htab
->glink
!= NULL
13811 && htab
->glink
->reloc_count
!= 0
13812 && !_bfd_elf_link_output_relocs (output_bfd
,
13814 elf_section_data (htab
->glink
)->rela
.hdr
,
13815 elf_section_data (htab
->glink
)->relocs
,
13820 if (htab
->glink_eh_frame
!= NULL
13821 && htab
->glink_eh_frame
->sec_info_type
== ELF_INFO_TYPE_EH_FRAME
13822 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
13823 htab
->glink_eh_frame
,
13824 htab
->glink_eh_frame
->contents
))
13827 /* We need to handle writing out multiple GOT sections ourselves,
13828 since we didn't add them to DYNOBJ. We know dynobj is the first
13830 while ((dynobj
= dynobj
->link_next
) != NULL
)
13834 if (!is_ppc64_elf (dynobj
))
13837 s
= ppc64_elf_tdata (dynobj
)->got
;
13840 && s
->output_section
!= bfd_abs_section_ptr
13841 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13842 s
->contents
, s
->output_offset
,
13845 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13848 && s
->output_section
!= bfd_abs_section_ptr
13849 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13850 s
->contents
, s
->output_offset
,
13858 #include "elf64-target.h"