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"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
85 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
86 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_process_dot_syms
98 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
108 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
109 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
110 #define elf_backend_action_discarded ppc64_elf_action_discarded
111 #define elf_backend_relocate_section ppc64_elf_relocate_section
112 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
113 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
114 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
115 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
116 #define elf_backend_special_sections ppc64_elf_special_sections
117 #define elf_backend_post_process_headers _bfd_elf_set_osabi
119 /* The name of the dynamic interpreter. This is put in the .interp
121 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
123 /* The size in bytes of an entry in the procedure linkage table. */
124 #define PLT_ENTRY_SIZE 24
126 /* The initial size of the plt reserved for the dynamic linker. */
127 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
129 /* TOC base pointers offset from start of TOC. */
130 #define TOC_BASE_OFF 0x8000
132 /* Offset of tp and dtp pointers from start of TLS block. */
133 #define TP_OFFSET 0x7000
134 #define DTP_OFFSET 0x8000
136 /* .plt call stub instructions. The normal stub is like this, but
137 sometimes the .plt entry crosses a 64k boundary and we need to
138 insert an addi to adjust r12. */
139 #define PLT_CALL_STUB_SIZE (7*4)
140 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
141 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
142 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
143 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
144 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
145 /* ld %r11,xxx+16@l(%r12) */
146 #define BCTR 0x4e800420 /* bctr */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
150 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
151 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
154 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
155 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
157 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
159 /* glink call stub instructions. We enter with the index in R0. */
160 #define GLINK_CALL_STUB_SIZE (16*4)
164 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
165 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
167 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
168 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
169 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
170 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
178 #define NOP 0x60000000
180 /* Some other nops. */
181 #define CROR_151515 0x4def7b82
182 #define CROR_313131 0x4ffffb82
184 /* .glink entries for the first 32k functions are two instructions. */
185 #define LI_R0_0 0x38000000 /* li %r0,0 */
186 #define B_DOT 0x48000000 /* b . */
188 /* After that, we need two instructions to load the index, followed by
190 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
191 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
193 /* Instructions used by the save and restore reg functions. */
194 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
195 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
196 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
197 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
198 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
199 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
200 #define LI_R12_0 0x39800000 /* li %r12,0 */
201 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
202 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define BLR 0x4e800020 /* blr */
206 /* Since .opd is an array of descriptors and each entry will end up
207 with identical R_PPC64_RELATIVE relocs, there is really no need to
208 propagate .opd relocs; The dynamic linker should be taught to
209 relocate .opd without reloc entries. */
210 #ifndef NO_OPD_RELOCS
211 #define NO_OPD_RELOCS 0
214 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
216 /* Relocation HOWTO's. */
217 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
219 static reloc_howto_type ppc64_elf_howto_raw
[] = {
220 /* This reloc does nothing. */
221 HOWTO (R_PPC64_NONE
, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 FALSE
, /* pc_relative */
227 complain_overflow_dont
, /* complain_on_overflow */
228 bfd_elf_generic_reloc
, /* special_function */
229 "R_PPC64_NONE", /* name */
230 FALSE
, /* partial_inplace */
233 FALSE
), /* pcrel_offset */
235 /* A standard 32 bit relocation. */
236 HOWTO (R_PPC64_ADDR32
, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE
, /* pc_relative */
242 complain_overflow_bitfield
, /* complain_on_overflow */
243 bfd_elf_generic_reloc
, /* special_function */
244 "R_PPC64_ADDR32", /* name */
245 FALSE
, /* partial_inplace */
247 0xffffffff, /* dst_mask */
248 FALSE
), /* pcrel_offset */
250 /* An absolute 26 bit branch; the lower two bits must be zero.
251 FIXME: we don't check that, we just clear them. */
252 HOWTO (R_PPC64_ADDR24
, /* type */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE
, /* pc_relative */
258 complain_overflow_bitfield
, /* complain_on_overflow */
259 bfd_elf_generic_reloc
, /* special_function */
260 "R_PPC64_ADDR24", /* name */
261 FALSE
, /* partial_inplace */
263 0x03fffffc, /* dst_mask */
264 FALSE
), /* pcrel_offset */
266 /* A standard 16 bit relocation. */
267 HOWTO (R_PPC64_ADDR16
, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE
, /* pc_relative */
273 complain_overflow_bitfield
, /* complain_on_overflow */
274 bfd_elf_generic_reloc
, /* special_function */
275 "R_PPC64_ADDR16", /* name */
276 FALSE
, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE
), /* pcrel_offset */
281 /* A 16 bit relocation without overflow. */
282 HOWTO (R_PPC64_ADDR16_LO
, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE
, /* pc_relative */
288 complain_overflow_dont
,/* complain_on_overflow */
289 bfd_elf_generic_reloc
, /* special_function */
290 "R_PPC64_ADDR16_LO", /* name */
291 FALSE
, /* partial_inplace */
293 0xffff, /* dst_mask */
294 FALSE
), /* pcrel_offset */
296 /* Bits 16-31 of an address. */
297 HOWTO (R_PPC64_ADDR16_HI
, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE
, /* pc_relative */
303 complain_overflow_dont
, /* complain_on_overflow */
304 bfd_elf_generic_reloc
, /* special_function */
305 "R_PPC64_ADDR16_HI", /* name */
306 FALSE
, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE
), /* pcrel_offset */
311 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
312 bits, treated as a signed number, is negative. */
313 HOWTO (R_PPC64_ADDR16_HA
, /* type */
315 1, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE
, /* pc_relative */
319 complain_overflow_dont
, /* complain_on_overflow */
320 ppc64_elf_ha_reloc
, /* special_function */
321 "R_PPC64_ADDR16_HA", /* name */
322 FALSE
, /* partial_inplace */
324 0xffff, /* dst_mask */
325 FALSE
), /* pcrel_offset */
327 /* An absolute 16 bit branch; the lower two bits must be zero.
328 FIXME: we don't check that, we just clear them. */
329 HOWTO (R_PPC64_ADDR14
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_bitfield
, /* complain_on_overflow */
336 ppc64_elf_branch_reloc
, /* special_function */
337 "R_PPC64_ADDR14", /* name */
338 FALSE
, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is expected to be taken. The lower two
345 bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE
, /* pc_relative */
352 complain_overflow_bitfield
, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc
, /* special_function */
354 "R_PPC64_ADDR14_BRTAKEN",/* name */
355 FALSE
, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE
), /* pcrel_offset */
360 /* An absolute 16 bit branch, for which bit 10 should be set to
361 indicate that the branch is not expected to be taken. The lower
362 two bits must be zero. */
363 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
, /* complain_on_overflow */
370 ppc64_elf_brtaken_reloc
, /* special_function */
371 "R_PPC64_ADDR14_BRNTAKEN",/* name */
372 FALSE
, /* partial_inplace */
374 0x0000fffc, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 /* A relative 26 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL24
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE
, /* pc_relative */
384 complain_overflow_signed
, /* complain_on_overflow */
385 ppc64_elf_branch_reloc
, /* special_function */
386 "R_PPC64_REL24", /* name */
387 FALSE
, /* partial_inplace */
389 0x03fffffc, /* dst_mask */
390 TRUE
), /* pcrel_offset */
392 /* A relative 16 bit branch; the lower two bits must be zero. */
393 HOWTO (R_PPC64_REL14
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 ppc64_elf_branch_reloc
, /* special_function */
401 "R_PPC64_REL14", /* name */
402 FALSE
, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE
), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is expected to be taken. The lower two bits must be
410 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE
, /* pc_relative */
416 complain_overflow_signed
, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc
, /* special_function */
418 "R_PPC64_REL14_BRTAKEN", /* name */
419 FALSE
, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE
), /* pcrel_offset */
424 /* A relative 16 bit branch. Bit 10 should be set to indicate that
425 the branch is not expected to be taken. The lower two bits must
427 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE
, /* pc_relative */
433 complain_overflow_signed
, /* complain_on_overflow */
434 ppc64_elf_brtaken_reloc
, /* special_function */
435 "R_PPC64_REL14_BRNTAKEN",/* name */
436 FALSE
, /* partial_inplace */
438 0x0000fffc, /* dst_mask */
439 TRUE
), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
443 HOWTO (R_PPC64_GOT16
, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE
, /* pc_relative */
449 complain_overflow_signed
, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc
, /* special_function */
451 "R_PPC64_GOT16", /* name */
452 FALSE
, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE
), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_LO
, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE
, /* pc_relative */
465 complain_overflow_dont
, /* complain_on_overflow */
466 ppc64_elf_unhandled_reloc
, /* special_function */
467 "R_PPC64_GOT16_LO", /* name */
468 FALSE
, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE
), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HI
, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_dont
,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc
, /* special_function */
483 "R_PPC64_GOT16_HI", /* name */
484 FALSE
, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE
), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
491 HOWTO (R_PPC64_GOT16_HA
, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_dont
,/* complain_on_overflow */
498 ppc64_elf_unhandled_reloc
, /* special_function */
499 "R_PPC64_GOT16_HA", /* name */
500 FALSE
, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* This is used only by the dynamic linker. The symbol should exist
506 both in the object being run and in some shared library. The
507 dynamic linker copies the data addressed by the symbol from the
508 shared library into the object, because the object being
509 run has to have the data at some particular address. */
510 HOWTO (R_PPC64_COPY
, /* type */
512 0, /* this one is variable size */
514 FALSE
, /* pc_relative */
516 complain_overflow_dont
, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc
, /* special_function */
518 "R_PPC64_COPY", /* name */
519 FALSE
, /* partial_inplace */
522 FALSE
), /* pcrel_offset */
524 /* Like R_PPC64_ADDR64, but used when setting global offset table
526 HOWTO (R_PPC64_GLOB_DAT
, /* type */
528 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
530 FALSE
, /* pc_relative */
532 complain_overflow_dont
, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc
, /* special_function */
534 "R_PPC64_GLOB_DAT", /* name */
535 FALSE
, /* partial_inplace */
537 ONES (64), /* dst_mask */
538 FALSE
), /* pcrel_offset */
540 /* Created by the link editor. Marks a procedure linkage table
541 entry for a symbol. */
542 HOWTO (R_PPC64_JMP_SLOT
, /* type */
544 0, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE
, /* pc_relative */
548 complain_overflow_dont
, /* complain_on_overflow */
549 ppc64_elf_unhandled_reloc
, /* special_function */
550 "R_PPC64_JMP_SLOT", /* name */
551 FALSE
, /* partial_inplace */
554 FALSE
), /* pcrel_offset */
556 /* Used only by the dynamic linker. When the object is run, this
557 doubleword64 is set to the load address of the object, plus the
559 HOWTO (R_PPC64_RELATIVE
, /* type */
561 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
563 FALSE
, /* pc_relative */
565 complain_overflow_dont
, /* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_PPC64_RELATIVE", /* name */
568 FALSE
, /* partial_inplace */
570 ONES (64), /* dst_mask */
571 FALSE
), /* pcrel_offset */
573 /* Like R_PPC64_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR32
, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE
, /* pc_relative */
580 complain_overflow_bitfield
, /* complain_on_overflow */
581 bfd_elf_generic_reloc
, /* special_function */
582 "R_PPC64_UADDR32", /* name */
583 FALSE
, /* partial_inplace */
585 0xffffffff, /* dst_mask */
586 FALSE
), /* pcrel_offset */
588 /* Like R_PPC64_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC64_UADDR16
, /* type */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
593 FALSE
, /* pc_relative */
595 complain_overflow_bitfield
, /* complain_on_overflow */
596 bfd_elf_generic_reloc
, /* special_function */
597 "R_PPC64_UADDR16", /* name */
598 FALSE
, /* partial_inplace */
600 0xffff, /* dst_mask */
601 FALSE
), /* pcrel_offset */
603 /* 32-bit PC relative. */
604 HOWTO (R_PPC64_REL32
, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 TRUE
, /* pc_relative */
610 /* FIXME: Verify. Was complain_overflow_bitfield. */
611 complain_overflow_signed
, /* complain_on_overflow */
612 bfd_elf_generic_reloc
, /* special_function */
613 "R_PPC64_REL32", /* name */
614 FALSE
, /* partial_inplace */
616 0xffffffff, /* dst_mask */
617 TRUE
), /* pcrel_offset */
619 /* 32-bit relocation to the symbol's procedure linkage table. */
620 HOWTO (R_PPC64_PLT32
, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE
, /* pc_relative */
626 complain_overflow_bitfield
, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc
, /* special_function */
628 "R_PPC64_PLT32", /* name */
629 FALSE
, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 FALSE
), /* pcrel_offset */
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: R_PPC64_PLTREL32 not supported. */
636 HOWTO (R_PPC64_PLTREL32
, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 TRUE
, /* pc_relative */
642 complain_overflow_signed
, /* complain_on_overflow */
643 bfd_elf_generic_reloc
, /* special_function */
644 "R_PPC64_PLTREL32", /* name */
645 FALSE
, /* partial_inplace */
647 0xffffffff, /* dst_mask */
648 TRUE
), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_LO
, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE
, /* pc_relative */
658 complain_overflow_dont
, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc
, /* special_function */
660 "R_PPC64_PLT16_LO", /* name */
661 FALSE
, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE
), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HI
, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE
, /* pc_relative */
674 complain_overflow_dont
, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc
, /* special_function */
676 "R_PPC64_PLT16_HI", /* name */
677 FALSE
, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE
), /* pcrel_offset */
682 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
684 HOWTO (R_PPC64_PLT16_HA
, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE
, /* pc_relative */
690 complain_overflow_dont
, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc
, /* special_function */
692 "R_PPC64_PLT16_HA", /* name */
693 FALSE
, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE
), /* pcrel_offset */
698 /* 16-bit section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc
, /* special_function */
707 "R_PPC64_SECTOFF", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* Like R_PPC64_SECTOFF, but no overflow warning. */
714 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE
, /* pc_relative */
720 complain_overflow_dont
, /* complain_on_overflow */
721 ppc64_elf_sectoff_reloc
, /* special_function */
722 "R_PPC64_SECTOFF_LO", /* name */
723 FALSE
, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE
), /* pcrel_offset */
728 /* 16-bit upper half section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE
, /* pc_relative */
735 complain_overflow_dont
, /* complain_on_overflow */
736 ppc64_elf_sectoff_reloc
, /* special_function */
737 "R_PPC64_SECTOFF_HI", /* name */
738 FALSE
, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE
), /* pcrel_offset */
743 /* 16-bit upper half adjusted section relative relocation. */
744 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE
, /* pc_relative */
750 complain_overflow_dont
, /* complain_on_overflow */
751 ppc64_elf_sectoff_ha_reloc
, /* special_function */
752 "R_PPC64_SECTOFF_HA", /* name */
753 FALSE
, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE
), /* pcrel_offset */
758 /* Like R_PPC64_REL24 without touching the two least significant bits. */
759 HOWTO (R_PPC64_REL30
, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 TRUE
, /* pc_relative */
765 complain_overflow_dont
, /* complain_on_overflow */
766 bfd_elf_generic_reloc
, /* special_function */
767 "R_PPC64_REL30", /* name */
768 FALSE
, /* partial_inplace */
770 0xfffffffc, /* dst_mask */
771 TRUE
), /* pcrel_offset */
773 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
775 /* A standard 64-bit relocation. */
776 HOWTO (R_PPC64_ADDR64
, /* type */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
780 FALSE
, /* pc_relative */
782 complain_overflow_dont
, /* complain_on_overflow */
783 bfd_elf_generic_reloc
, /* special_function */
784 "R_PPC64_ADDR64", /* name */
785 FALSE
, /* partial_inplace */
787 ONES (64), /* dst_mask */
788 FALSE
), /* pcrel_offset */
790 /* The bits 32-47 of an address. */
791 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_PPC64_ADDR16_HIGHER", /* name */
800 FALSE
, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* The bits 32-47 of an address, plus 1 if the contents of the low
806 16 bits, treated as a signed number, is negative. */
807 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 ppc64_elf_ha_reloc
, /* special_function */
815 "R_PPC64_ADDR16_HIGHERA", /* name */
816 FALSE
, /* partial_inplace */
818 0xffff, /* dst_mask */
819 FALSE
), /* pcrel_offset */
821 /* The bits 48-63 of an address. */
822 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_dont
, /* complain_on_overflow */
829 bfd_elf_generic_reloc
, /* special_function */
830 "R_PPC64_ADDR16_HIGHEST", /* name */
831 FALSE
, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE
), /* pcrel_offset */
836 /* The bits 48-63 of an address, plus 1 if the contents of the low
837 16 bits, treated as a signed number, is negative. */
838 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE
, /* pc_relative */
844 complain_overflow_dont
, /* complain_on_overflow */
845 ppc64_elf_ha_reloc
, /* special_function */
846 "R_PPC64_ADDR16_HIGHESTA", /* name */
847 FALSE
, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* Like ADDR64, but may be unaligned. */
853 HOWTO (R_PPC64_UADDR64
, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 FALSE
, /* pc_relative */
859 complain_overflow_dont
, /* complain_on_overflow */
860 bfd_elf_generic_reloc
, /* special_function */
861 "R_PPC64_UADDR64", /* name */
862 FALSE
, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 FALSE
), /* pcrel_offset */
867 /* 64-bit relative relocation. */
868 HOWTO (R_PPC64_REL64
, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 TRUE
, /* pc_relative */
874 complain_overflow_dont
, /* complain_on_overflow */
875 bfd_elf_generic_reloc
, /* special_function */
876 "R_PPC64_REL64", /* name */
877 FALSE
, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 TRUE
), /* pcrel_offset */
882 /* 64-bit relocation to the symbol's procedure linkage table. */
883 HOWTO (R_PPC64_PLT64
, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 FALSE
, /* pc_relative */
889 complain_overflow_dont
, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc
, /* special_function */
891 "R_PPC64_PLT64", /* name */
892 FALSE
, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 FALSE
), /* pcrel_offset */
897 /* 64-bit PC relative relocation to the symbol's procedure linkage
899 /* FIXME: R_PPC64_PLTREL64 not supported. */
900 HOWTO (R_PPC64_PLTREL64
, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 ppc64_elf_unhandled_reloc
, /* special_function */
908 "R_PPC64_PLTREL64", /* name */
909 FALSE
, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation. */
916 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
917 HOWTO (R_PPC64_TOC16
, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE
, /* pc_relative */
923 complain_overflow_signed
, /* complain_on_overflow */
924 ppc64_elf_toc_reloc
, /* special_function */
925 "R_PPC64_TOC16", /* name */
926 FALSE
, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE
), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation without overflow. */
933 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_LO
, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
, /* complain_on_overflow */
941 ppc64_elf_toc_reloc
, /* special_function */
942 "R_PPC64_TOC16_LO", /* name */
943 FALSE
, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE
), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits. */
950 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
951 HOWTO (R_PPC64_TOC16_HI
, /* type */
953 1, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE
, /* pc_relative */
957 complain_overflow_dont
, /* complain_on_overflow */
958 ppc64_elf_toc_reloc
, /* special_function */
959 "R_PPC64_TOC16_HI", /* name */
960 FALSE
, /* partial_inplace */
962 0xffff, /* dst_mask */
963 FALSE
), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
966 contents of the low 16 bits, treated as a signed number, is
969 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
970 HOWTO (R_PPC64_TOC16_HA
, /* type */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE
, /* pc_relative */
976 complain_overflow_dont
, /* complain_on_overflow */
977 ppc64_elf_toc_ha_reloc
, /* special_function */
978 "R_PPC64_TOC16_HA", /* name */
979 FALSE
, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE
), /* pcrel_offset */
984 /* 64-bit relocation; insert value of TOC base (.TOC.). */
986 /* R_PPC64_TOC 51 doubleword64 .TOC. */
987 HOWTO (R_PPC64_TOC
, /* type */
989 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
991 FALSE
, /* pc_relative */
993 complain_overflow_bitfield
, /* complain_on_overflow */
994 ppc64_elf_toc64_reloc
, /* special_function */
995 "R_PPC64_TOC", /* name */
996 FALSE
, /* partial_inplace */
998 ONES (64), /* dst_mask */
999 FALSE
), /* pcrel_offset */
1001 /* Like R_PPC64_GOT16, but also informs the link editor that the
1002 value to relocate may (!) refer to a PLT entry which the link
1003 editor (a) may replace with the symbol value. If the link editor
1004 is unable to fully resolve the symbol, it may (b) create a PLT
1005 entry and store the address to the new PLT entry in the GOT.
1006 This permits lazy resolution of function symbols at run time.
1007 The link editor may also skip all of this and just (c) emit a
1008 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1009 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16
, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_signed
, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc
, /* special_function */
1018 "R_PPC64_PLTGOT16", /* name */
1019 FALSE
, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Like R_PPC64_PLTGOT16, but without overflow. */
1025 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc
, /* special_function */
1034 "R_PPC64_PLTGOT16_LO", /* name */
1035 FALSE
, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1041 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1042 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_dont
, /* complain_on_overflow */
1049 ppc64_elf_unhandled_reloc
, /* special_function */
1050 "R_PPC64_PLTGOT16_HI", /* name */
1051 FALSE
, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1056 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1057 1 if the contents of the low 16 bits, treated as a signed number,
1059 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1060 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1061 16, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_dont
,/* complain_on_overflow */
1067 ppc64_elf_unhandled_reloc
, /* special_function */
1068 "R_PPC64_PLTGOT16_HA", /* name */
1069 FALSE
, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1074 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE
, /* pc_relative */
1081 complain_overflow_bitfield
, /* complain_on_overflow */
1082 bfd_elf_generic_reloc
, /* special_function */
1083 "R_PPC64_ADDR16_DS", /* name */
1084 FALSE
, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE
), /* pcrel_offset */
1089 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_dont
,/* complain_on_overflow */
1097 bfd_elf_generic_reloc
, /* special_function */
1098 "R_PPC64_ADDR16_LO_DS",/* name */
1099 FALSE
, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_DS
, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE
, /* pc_relative */
1111 complain_overflow_signed
, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc
, /* special_function */
1113 "R_PPC64_GOT16_DS", /* name */
1114 FALSE
, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE
), /* pcrel_offset */
1119 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE
, /* pc_relative */
1126 complain_overflow_dont
, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc
, /* special_function */
1128 "R_PPC64_GOT16_LO_DS", /* name */
1129 FALSE
, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE
), /* pcrel_offset */
1134 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE
, /* pc_relative */
1141 complain_overflow_dont
, /* complain_on_overflow */
1142 ppc64_elf_unhandled_reloc
, /* special_function */
1143 "R_PPC64_PLT16_LO_DS", /* name */
1144 FALSE
, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE
), /* pcrel_offset */
1149 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE
, /* pc_relative */
1156 complain_overflow_bitfield
, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc
, /* special_function */
1158 "R_PPC64_SECTOFF_DS", /* name */
1159 FALSE
, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE
), /* pcrel_offset */
1164 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE
, /* pc_relative */
1171 complain_overflow_dont
, /* complain_on_overflow */
1172 ppc64_elf_sectoff_reloc
, /* special_function */
1173 "R_PPC64_SECTOFF_LO_DS",/* name */
1174 FALSE
, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE
), /* pcrel_offset */
1179 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_DS
, /* type */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE
, /* pc_relative */
1186 complain_overflow_signed
, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc
, /* special_function */
1188 "R_PPC64_TOC16_DS", /* name */
1189 FALSE
, /* partial_inplace */
1191 0xfffc, /* dst_mask */
1192 FALSE
), /* pcrel_offset */
1194 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1195 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE
, /* pc_relative */
1201 complain_overflow_dont
, /* complain_on_overflow */
1202 ppc64_elf_toc_reloc
, /* special_function */
1203 "R_PPC64_TOC16_LO_DS", /* name */
1204 FALSE
, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE
), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE
, /* pc_relative */
1217 complain_overflow_signed
, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc
, /* special_function */
1219 "R_PPC64_PLTGOT16_DS", /* name */
1220 FALSE
, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE
), /* pcrel_offset */
1225 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1226 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1227 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_dont
, /* complain_on_overflow */
1234 ppc64_elf_unhandled_reloc
, /* special_function */
1235 "R_PPC64_PLTGOT16_LO_DS",/* name */
1236 FALSE
, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* Marker relocs for TLS. */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 bfd_elf_generic_reloc
, /* special_function */
1250 "R_PPC64_TLS", /* name */
1251 FALSE
, /* partial_inplace */
1254 FALSE
), /* pcrel_offset */
1256 HOWTO (R_PPC64_TLSGD
,
1258 2, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE
, /* pc_relative */
1262 complain_overflow_dont
, /* complain_on_overflow */
1263 bfd_elf_generic_reloc
, /* special_function */
1264 "R_PPC64_TLSGD", /* name */
1265 FALSE
, /* partial_inplace */
1268 FALSE
), /* pcrel_offset */
1270 HOWTO (R_PPC64_TLSLD
,
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
, /* complain_on_overflow */
1277 bfd_elf_generic_reloc
, /* special_function */
1278 "R_PPC64_TLSLD", /* name */
1279 FALSE
, /* partial_inplace */
1282 FALSE
), /* pcrel_offset */
1284 /* Computes the load module index of the load module that contains the
1285 definition of its TLS sym. */
1286 HOWTO (R_PPC64_DTPMOD64
,
1288 4, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE
, /* pc_relative */
1292 complain_overflow_dont
, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc
, /* special_function */
1294 "R_PPC64_DTPMOD64", /* name */
1295 FALSE
, /* partial_inplace */
1297 ONES (64), /* dst_mask */
1298 FALSE
), /* pcrel_offset */
1300 /* Computes a dtv-relative displacement, the difference between the value
1301 of sym+add and the base address of the thread-local storage block that
1302 contains the definition of sym, minus 0x8000. */
1303 HOWTO (R_PPC64_DTPREL64
,
1305 4, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE
, /* pc_relative */
1309 complain_overflow_dont
, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc
, /* special_function */
1311 "R_PPC64_DTPREL64", /* name */
1312 FALSE
, /* partial_inplace */
1314 ONES (64), /* dst_mask */
1315 FALSE
), /* pcrel_offset */
1317 /* A 16 bit dtprel reloc. */
1318 HOWTO (R_PPC64_DTPREL16
,
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_signed
, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc
, /* special_function */
1326 "R_PPC64_DTPREL16", /* name */
1327 FALSE
, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE
), /* pcrel_offset */
1332 /* Like DTPREL16, but no overflow. */
1333 HOWTO (R_PPC64_DTPREL16_LO
,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE
, /* pc_relative */
1339 complain_overflow_dont
, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc
, /* special_function */
1341 "R_PPC64_DTPREL16_LO", /* name */
1342 FALSE
, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE
), /* pcrel_offset */
1347 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HI
,
1349 16, /* rightshift */
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_HI", /* name */
1357 FALSE
, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HA
,
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_HA", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1379 32, /* 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_HIGHER", /* name */
1387 FALSE
, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE
), /* pcrel_offset */
1392 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
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_HIGHERA", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1409 48, /* 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_HIGHEST", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE
), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
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_HIGHESTA", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE
), /* pcrel_offset */
1437 /* Like DTPREL16, but for insns with a DS field. */
1438 HOWTO (R_PPC64_DTPREL16_DS
,
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE
, /* pc_relative */
1444 complain_overflow_signed
, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc
, /* special_function */
1446 "R_PPC64_DTPREL16_DS", /* name */
1447 FALSE
, /* partial_inplace */
1449 0xfffc, /* dst_mask */
1450 FALSE
), /* pcrel_offset */
1452 /* Like DTPREL16_DS, but no overflow. */
1453 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_dont
, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC64_DTPREL16_LO_DS", /* name */
1462 FALSE
, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* Computes a tp-relative displacement, the difference between the value of
1468 sym+add and the value of the thread pointer (r13). */
1469 HOWTO (R_PPC64_TPREL64
,
1471 4, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE
, /* pc_relative */
1475 complain_overflow_dont
, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc
, /* special_function */
1477 "R_PPC64_TPREL64", /* name */
1478 FALSE
, /* partial_inplace */
1480 ONES (64), /* dst_mask */
1481 FALSE
), /* pcrel_offset */
1483 /* A 16 bit tprel reloc. */
1484 HOWTO (R_PPC64_TPREL16
,
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_signed
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_TPREL16", /* name */
1493 FALSE
, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* Like TPREL16, but no overflow. */
1499 HOWTO (R_PPC64_TPREL16_LO
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_dont
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_TPREL16_LO", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like TPREL16_LO, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HI
,
1515 16, /* rightshift */
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_HI", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Like TPREL16_HI, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HA
,
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_HA", /* name */
1538 FALSE
, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE
), /* pcrel_offset */
1543 /* Like TPREL16_HI, but next higher group of 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHER
,
1545 32, /* 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_HIGHER", /* name */
1553 FALSE
, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE
), /* pcrel_offset */
1558 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHERA
,
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_HIGHERA", /* name */
1568 FALSE
, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1575 48, /* 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_HIGHEST", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
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_HIGHESTA", /* name */
1598 FALSE
, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* Like TPREL16, but for insns with a DS field. */
1604 HOWTO (R_PPC64_TPREL16_DS
,
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_signed
, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc
, /* special_function */
1612 "R_PPC64_TPREL16_DS", /* name */
1613 FALSE
, /* partial_inplace */
1615 0xfffc, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 /* Like TPREL16_DS, but no overflow. */
1619 HOWTO (R_PPC64_TPREL16_LO_DS
,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE
, /* pc_relative */
1625 complain_overflow_dont
, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc
, /* special_function */
1627 "R_PPC64_TPREL16_LO_DS", /* name */
1628 FALSE
, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE
), /* pcrel_offset */
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1635 to the first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSGD16
,
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE
, /* pc_relative */
1642 complain_overflow_signed
, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc
, /* special_function */
1644 "R_PPC64_GOT_TLSGD16", /* name */
1645 FALSE
, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE
), /* pcrel_offset */
1650 /* Like GOT_TLSGD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_dont
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_GOT_TLSGD16_LO", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1667 16, /* rightshift */
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_HI", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
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_HA", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and zero, and computes the offset to the
1697 first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSLD16
,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE
, /* pc_relative */
1704 complain_overflow_signed
, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc
, /* special_function */
1706 "R_PPC64_GOT_TLSLD16", /* name */
1707 FALSE
, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE
), /* pcrel_offset */
1712 /* Like GOT_TLSLD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE
, /* pc_relative */
1719 complain_overflow_dont
, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc
, /* special_function */
1721 "R_PPC64_GOT_TLSLD16_LO", /* name */
1722 FALSE
, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE
), /* pcrel_offset */
1727 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1729 16, /* rightshift */
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_HI", /* name */
1737 FALSE
, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
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_HA", /* name */
1752 FALSE
, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE
), /* pcrel_offset */
1757 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1758 the offset to the entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE
, /* pc_relative */
1765 complain_overflow_signed
, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc
, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_DS", /* name */
1768 FALSE
, /* partial_inplace */
1770 0xfffc, /* dst_mask */
1771 FALSE
), /* pcrel_offset */
1773 /* Like GOT_DTPREL16_DS, but no overflow. */
1774 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_dont
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1790 16, /* rightshift */
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_HI", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
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_HA", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1819 offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE
, /* pc_relative */
1826 complain_overflow_signed
, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc
, /* special_function */
1828 "R_PPC64_GOT_TPREL16_DS", /* name */
1829 FALSE
, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE
), /* pcrel_offset */
1834 /* Like GOT_TPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_dont
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1851 16, /* rightshift */
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_HI", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HA
,
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_HA", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 HOWTO (R_PPC64_JMP_IREL
, /* type */
1881 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1883 FALSE
, /* pc_relative */
1885 complain_overflow_dont
, /* complain_on_overflow */
1886 ppc64_elf_unhandled_reloc
, /* special_function */
1887 "R_PPC64_JMP_IREL", /* name */
1888 FALSE
, /* partial_inplace */
1891 FALSE
), /* pcrel_offset */
1893 HOWTO (R_PPC64_IRELATIVE
, /* type */
1895 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1897 FALSE
, /* pc_relative */
1899 complain_overflow_dont
, /* complain_on_overflow */
1900 bfd_elf_generic_reloc
, /* special_function */
1901 "R_PPC64_IRELATIVE", /* name */
1902 FALSE
, /* partial_inplace */
1904 ONES (64), /* dst_mask */
1905 FALSE
), /* pcrel_offset */
1907 /* A 16 bit relative relocation. */
1908 HOWTO (R_PPC64_REL16
, /* type */
1910 1, /* size (0 = byte, 1 = short, 2 = long) */
1912 TRUE
, /* pc_relative */
1914 complain_overflow_bitfield
, /* complain_on_overflow */
1915 bfd_elf_generic_reloc
, /* special_function */
1916 "R_PPC64_REL16", /* name */
1917 FALSE
, /* partial_inplace */
1919 0xffff, /* dst_mask */
1920 TRUE
), /* pcrel_offset */
1922 /* A 16 bit relative relocation without overflow. */
1923 HOWTO (R_PPC64_REL16_LO
, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE
, /* pc_relative */
1929 complain_overflow_dont
,/* complain_on_overflow */
1930 bfd_elf_generic_reloc
, /* special_function */
1931 "R_PPC64_REL16_LO", /* name */
1932 FALSE
, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE
), /* pcrel_offset */
1937 /* The high order 16 bits of a relative address. */
1938 HOWTO (R_PPC64_REL16_HI
, /* type */
1939 16, /* rightshift */
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_HI", /* name */
1947 FALSE
, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE
), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address, plus 1 if the contents of
1953 the low 16 bits, treated as a signed number, is negative. */
1954 HOWTO (R_PPC64_REL16_HA
, /* type */
1955 16, /* rightshift */
1956 1, /* size (0 = byte, 1 = short, 2 = long) */
1958 TRUE
, /* pc_relative */
1960 complain_overflow_dont
, /* complain_on_overflow */
1961 ppc64_elf_ha_reloc
, /* special_function */
1962 "R_PPC64_REL16_HA", /* name */
1963 FALSE
, /* partial_inplace */
1965 0xffff, /* dst_mask */
1966 TRUE
), /* pcrel_offset */
1968 /* GNU extension to record C++ vtable hierarchy. */
1969 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1971 0, /* size (0 = byte, 1 = short, 2 = long) */
1973 FALSE
, /* pc_relative */
1975 complain_overflow_dont
, /* complain_on_overflow */
1976 NULL
, /* special_function */
1977 "R_PPC64_GNU_VTINHERIT", /* name */
1978 FALSE
, /* partial_inplace */
1981 FALSE
), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable member usage. */
1984 HOWTO (R_PPC64_GNU_VTENTRY
, /* 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_VTENTRY", /* name */
1993 FALSE
, /* partial_inplace */
1996 FALSE
), /* pcrel_offset */
2000 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2004 ppc_howto_init (void)
2006 unsigned int i
, type
;
2009 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2012 type
= ppc64_elf_howto_raw
[i
].type
;
2013 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2014 / sizeof (ppc64_elf_howto_table
[0])));
2015 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2019 static reloc_howto_type
*
2020 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2021 bfd_reloc_code_real_type code
)
2023 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2025 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2026 /* Initialize howto table if needed. */
2034 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2036 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2038 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2040 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2042 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2044 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2046 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2048 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2050 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2052 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2054 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2056 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2058 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2060 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2062 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2064 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2066 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2068 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2070 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2072 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2074 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2076 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2078 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2080 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2082 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2084 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2086 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2088 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2090 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2092 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2094 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2096 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2098 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2100 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2102 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2104 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2106 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2108 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2110 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2112 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2114 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2116 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2118 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2120 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2122 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2124 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2126 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2128 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2130 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2132 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2134 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2136 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2138 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2140 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2142 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2144 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2146 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2148 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2150 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2152 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2154 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2156 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2158 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2160 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2162 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2164 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2166 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2168 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2170 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2172 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2174 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2176 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2178 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2180 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2186 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2188 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2194 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2196 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2198 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2202 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2204 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2210 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2212 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2214 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2222 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2224 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2226 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2234 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2236 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2238 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2240 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2242 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2244 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2246 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2250 return ppc64_elf_howto_table
[r
];
2253 static reloc_howto_type
*
2254 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2260 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2262 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2263 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2264 return &ppc64_elf_howto_raw
[i
];
2269 /* Set the howto pointer for a PowerPC ELF reloc. */
2272 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2273 Elf_Internal_Rela
*dst
)
2277 /* Initialize howto table if needed. */
2278 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2281 type
= ELF64_R_TYPE (dst
->r_info
);
2282 if (type
>= (sizeof (ppc64_elf_howto_table
)
2283 / sizeof (ppc64_elf_howto_table
[0])))
2285 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2287 type
= R_PPC64_NONE
;
2289 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2292 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2294 static bfd_reloc_status_type
2295 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2296 void *data
, asection
*input_section
,
2297 bfd
*output_bfd
, char **error_message
)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd
!= NULL
)
2303 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2304 input_section
, output_bfd
, error_message
);
2306 /* Adjust the addend for sign extension of the low 16 bits.
2307 We won't actually be using the low 16 bits, so trashing them
2309 reloc_entry
->addend
+= 0x8000;
2310 return bfd_reloc_continue
;
2313 static bfd_reloc_status_type
2314 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2315 void *data
, asection
*input_section
,
2316 bfd
*output_bfd
, char **error_message
)
2318 if (output_bfd
!= NULL
)
2319 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2320 input_section
, output_bfd
, error_message
);
2322 if (strcmp (symbol
->section
->name
, ".opd") == 0
2323 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2325 bfd_vma dest
= opd_entry_value (symbol
->section
,
2326 symbol
->value
+ reloc_entry
->addend
,
2328 if (dest
!= (bfd_vma
) -1)
2329 reloc_entry
->addend
= dest
- (symbol
->value
2330 + symbol
->section
->output_section
->vma
2331 + symbol
->section
->output_offset
);
2333 return bfd_reloc_continue
;
2336 static bfd_reloc_status_type
2337 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2338 void *data
, asection
*input_section
,
2339 bfd
*output_bfd
, char **error_message
)
2342 enum elf_ppc64_reloc_type r_type
;
2343 bfd_size_type octets
;
2344 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2345 bfd_boolean is_power4
= FALSE
;
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd
!= NULL
)
2351 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2352 input_section
, output_bfd
, error_message
);
2354 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2355 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2356 insn
&= ~(0x01 << 21);
2357 r_type
= reloc_entry
->howto
->type
;
2358 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2359 || r_type
== R_PPC64_REL14_BRTAKEN
)
2360 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2364 /* Set 'a' bit. This is 0b00010 in BO field for branch
2365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2366 for branch on CTR insns (BO == 1a00t or 1a01t). */
2367 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2369 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2379 if (!bfd_is_com_section (symbol
->section
))
2380 target
= symbol
->value
;
2381 target
+= symbol
->section
->output_section
->vma
;
2382 target
+= symbol
->section
->output_offset
;
2383 target
+= reloc_entry
->addend
;
2385 from
= (reloc_entry
->address
2386 + input_section
->output_offset
2387 + input_section
->output_section
->vma
);
2389 /* Invert 'y' bit if not the default. */
2390 if ((bfd_signed_vma
) (target
- from
) < 0)
2393 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2395 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2396 input_section
, output_bfd
, error_message
);
2399 static bfd_reloc_status_type
2400 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2401 void *data
, asection
*input_section
,
2402 bfd
*output_bfd
, char **error_message
)
2404 /* If this is a relocatable link (output_bfd test tells us), just
2405 call the generic function. Any adjustment will be done at final
2407 if (output_bfd
!= NULL
)
2408 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2409 input_section
, output_bfd
, error_message
);
2411 /* Subtract the symbol section base address. */
2412 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2413 return bfd_reloc_continue
;
2416 static bfd_reloc_status_type
2417 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2418 void *data
, asection
*input_section
,
2419 bfd
*output_bfd
, char **error_message
)
2421 /* If this is a relocatable link (output_bfd test tells us), just
2422 call the generic function. Any adjustment will be done at final
2424 if (output_bfd
!= NULL
)
2425 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2426 input_section
, output_bfd
, error_message
);
2428 /* Subtract the symbol section base address. */
2429 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2431 /* Adjust the addend for sign extension of the low 16 bits. */
2432 reloc_entry
->addend
+= 0x8000;
2433 return bfd_reloc_continue
;
2436 static bfd_reloc_status_type
2437 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2438 void *data
, asection
*input_section
,
2439 bfd
*output_bfd
, char **error_message
)
2443 /* If this is a relocatable link (output_bfd test tells us), just
2444 call the generic function. Any adjustment will be done at final
2446 if (output_bfd
!= NULL
)
2447 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2448 input_section
, output_bfd
, error_message
);
2450 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2452 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2454 /* Subtract the TOC base address. */
2455 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2456 return bfd_reloc_continue
;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2461 void *data
, asection
*input_section
,
2462 bfd
*output_bfd
, char **error_message
)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd
!= NULL
)
2470 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2471 input_section
, output_bfd
, error_message
);
2473 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2475 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2477 /* Subtract the TOC base address. */
2478 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2480 /* Adjust the addend for sign extension of the low 16 bits. */
2481 reloc_entry
->addend
+= 0x8000;
2482 return bfd_reloc_continue
;
2485 static bfd_reloc_status_type
2486 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2487 void *data
, asection
*input_section
,
2488 bfd
*output_bfd
, char **error_message
)
2491 bfd_size_type octets
;
2493 /* If this is a relocatable link (output_bfd test tells us), just
2494 call the generic function. Any adjustment will be done at final
2496 if (output_bfd
!= NULL
)
2497 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2498 input_section
, output_bfd
, error_message
);
2500 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2502 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2504 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2505 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2506 return bfd_reloc_ok
;
2509 static bfd_reloc_status_type
2510 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2511 void *data
, asection
*input_section
,
2512 bfd
*output_bfd
, char **error_message
)
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd
!= NULL
)
2518 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2519 input_section
, output_bfd
, error_message
);
2521 if (error_message
!= NULL
)
2523 static char buf
[60];
2524 sprintf (buf
, "generic linker can't handle %s",
2525 reloc_entry
->howto
->name
);
2526 *error_message
= buf
;
2528 return bfd_reloc_dangerous
;
2531 /* Track GOT entries needed for a given symbol. We might need more
2532 than one got entry per symbol. */
2535 struct got_entry
*next
;
2537 /* The symbol addend that we'll be placing in the GOT. */
2540 /* Unlike other ELF targets, we use separate GOT entries for the same
2541 symbol referenced from different input files. This is to support
2542 automatic multiple TOC/GOT sections, where the TOC base can vary
2543 from one input file to another. After partitioning into TOC groups
2544 we merge entries within the group.
2546 Point to the BFD owning this GOT entry. */
2549 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2550 TLS_TPREL or TLS_DTPREL for tls entries. */
2551 unsigned char tls_type
;
2553 /* Non-zero if got.ent points to real entry. */
2554 unsigned char is_indirect
;
2556 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2559 bfd_signed_vma refcount
;
2561 struct got_entry
*ent
;
2565 /* The same for PLT. */
2568 struct plt_entry
*next
;
2574 bfd_signed_vma refcount
;
2579 struct ppc64_elf_obj_tdata
2581 struct elf_obj_tdata elf
;
2583 /* Shortcuts to dynamic linker sections. */
2587 /* Used during garbage collection. We attach global symbols defined
2588 on removed .opd entries to this section so that the sym is removed. */
2589 asection
*deleted_section
;
2591 /* TLS local dynamic got entry handling. Support for multiple GOT
2592 sections means we potentially need one of these for each input bfd. */
2593 struct got_entry tlsld_got
;
2595 /* A copy of relocs before they are modified for --emit-relocs. */
2596 Elf_Internal_Rela
*opd_relocs
;
2598 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2599 the reloc to be in the range -32768 to 32767. */
2600 unsigned int has_small_toc_reloc
;
2603 #define ppc64_elf_tdata(bfd) \
2604 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2606 #define ppc64_tlsld_got(bfd) \
2607 (&ppc64_elf_tdata (bfd)->tlsld_got)
2609 #define is_ppc64_elf(bfd) \
2610 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2611 && elf_object_id (bfd) == PPC64_ELF_DATA)
2613 /* Override the generic function because we store some extras. */
2616 ppc64_elf_mkobject (bfd
*abfd
)
2618 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2622 /* Fix bad default arch selected for a 64 bit input bfd when the
2623 default is 32 bit. */
2626 ppc64_elf_object_p (bfd
*abfd
)
2628 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2630 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2632 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2634 /* Relies on arch after 32 bit default being 64 bit default. */
2635 abfd
->arch_info
= abfd
->arch_info
->next
;
2636 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2642 /* Support for core dump NOTE sections. */
2645 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2647 size_t offset
, size
;
2649 if (note
->descsz
!= 504)
2653 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2656 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2662 /* Make a ".reg/999" section. */
2663 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2664 size
, note
->descpos
+ offset
);
2668 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2670 if (note
->descsz
!= 136)
2673 elf_tdata (abfd
)->core_pid
2674 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2675 elf_tdata (abfd
)->core_program
2676 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2677 elf_tdata (abfd
)->core_command
2678 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2684 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2697 va_start (ap
, note_type
);
2698 memset (data
, 0, 40);
2699 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2700 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2702 return elfcore_write_note (abfd
, buf
, bufsiz
,
2703 "CORE", note_type
, data
, sizeof (data
));
2714 va_start (ap
, note_type
);
2715 memset (data
, 0, 112);
2716 pid
= va_arg (ap
, long);
2717 bfd_put_32 (abfd
, pid
, data
+ 32);
2718 cursig
= va_arg (ap
, int);
2719 bfd_put_16 (abfd
, cursig
, data
+ 12);
2720 greg
= va_arg (ap
, const void *);
2721 memcpy (data
+ 112, greg
, 384);
2722 memset (data
+ 496, 0, 8);
2724 return elfcore_write_note (abfd
, buf
, bufsiz
,
2725 "CORE", note_type
, data
, sizeof (data
));
2730 /* Merge backend specific data from an object file to the output
2731 object file when linking. */
2734 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2736 /* Check if we have the same endianess. */
2737 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2738 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2739 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2743 if (bfd_big_endian (ibfd
))
2744 msg
= _("%B: compiled for a big endian system "
2745 "and target is little endian");
2747 msg
= _("%B: compiled for a little endian system "
2748 "and target is big endian");
2750 (*_bfd_error_handler
) (msg
, ibfd
);
2752 bfd_set_error (bfd_error_wrong_format
);
2759 /* Add extra PPC sections. */
2761 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2763 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2764 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2766 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2767 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2768 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2769 { NULL
, 0, 0, 0, 0 }
2772 enum _ppc64_sec_type
{
2778 struct _ppc64_elf_section_data
2780 struct bfd_elf_section_data elf
;
2784 /* An array with one entry for each opd function descriptor. */
2785 struct _opd_sec_data
2787 /* Points to the function code section for local opd entries. */
2788 asection
**func_sec
;
2790 /* After editing .opd, adjust references to opd local syms. */
2794 /* An array for toc sections, indexed by offset/8. */
2795 struct _toc_sec_data
2797 /* Specifies the relocation symbol index used at a given toc offset. */
2800 /* And the relocation addend. */
2805 enum _ppc64_sec_type sec_type
:2;
2807 /* Flag set when small branches are detected. Used to
2808 select suitable defaults for the stub group size. */
2809 unsigned int has_14bit_branch
:1;
2812 #define ppc64_elf_section_data(sec) \
2813 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2816 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2818 if (!sec
->used_by_bfd
)
2820 struct _ppc64_elf_section_data
*sdata
;
2821 bfd_size_type amt
= sizeof (*sdata
);
2823 sdata
= bfd_zalloc (abfd
, amt
);
2826 sec
->used_by_bfd
= sdata
;
2829 return _bfd_elf_new_section_hook (abfd
, sec
);
2832 static struct _opd_sec_data
*
2833 get_opd_info (asection
* sec
)
2836 && ppc64_elf_section_data (sec
) != NULL
2837 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2838 return &ppc64_elf_section_data (sec
)->u
.opd
;
2842 /* Parameters for the qsort hook. */
2843 static bfd_boolean synthetic_relocatable
;
2845 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2848 compare_symbols (const void *ap
, const void *bp
)
2850 const asymbol
*a
= * (const asymbol
**) ap
;
2851 const asymbol
*b
= * (const asymbol
**) bp
;
2853 /* Section symbols first. */
2854 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2856 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2859 /* then .opd symbols. */
2860 if (strcmp (a
->section
->name
, ".opd") == 0
2861 && strcmp (b
->section
->name
, ".opd") != 0)
2863 if (strcmp (a
->section
->name
, ".opd") != 0
2864 && strcmp (b
->section
->name
, ".opd") == 0)
2867 /* then other code symbols. */
2868 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2869 == (SEC_CODE
| SEC_ALLOC
)
2870 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2871 != (SEC_CODE
| SEC_ALLOC
))
2874 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2875 != (SEC_CODE
| SEC_ALLOC
)
2876 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2877 == (SEC_CODE
| SEC_ALLOC
))
2880 if (synthetic_relocatable
)
2882 if (a
->section
->id
< b
->section
->id
)
2885 if (a
->section
->id
> b
->section
->id
)
2889 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2892 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2895 /* For syms with the same value, prefer strong dynamic global function
2896 syms over other syms. */
2897 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2900 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2903 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2906 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2909 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2912 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2915 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2918 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2924 /* Search SYMS for a symbol of the given VALUE. */
2927 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2935 mid
= (lo
+ hi
) >> 1;
2936 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2938 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2948 mid
= (lo
+ hi
) >> 1;
2949 if (syms
[mid
]->section
->id
< id
)
2951 else if (syms
[mid
]->section
->id
> id
)
2953 else if (syms
[mid
]->value
< value
)
2955 else if (syms
[mid
]->value
> value
)
2965 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2967 bfd_vma vma
= *(bfd_vma
*) ptr
;
2968 return ((section
->flags
& SEC_ALLOC
) != 0
2969 && section
->vma
<= vma
2970 && vma
< section
->vma
+ section
->size
);
2973 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2974 entry syms. Also generate @plt symbols for the glink branch table. */
2977 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2978 long static_count
, asymbol
**static_syms
,
2979 long dyn_count
, asymbol
**dyn_syms
,
2986 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2988 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2993 opd
= bfd_get_section_by_name (abfd
, ".opd");
2997 symcount
= static_count
;
2999 symcount
+= dyn_count
;
3003 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3007 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3009 /* Use both symbol tables. */
3010 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3011 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3013 else if (!relocatable
&& static_count
== 0)
3014 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3016 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3018 synthetic_relocatable
= relocatable
;
3019 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3021 if (!relocatable
&& symcount
> 1)
3024 /* Trim duplicate syms, since we may have merged the normal and
3025 dynamic symbols. Actually, we only care about syms that have
3026 different values, so trim any with the same value. */
3027 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3028 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3029 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3030 syms
[j
++] = syms
[i
];
3035 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3039 for (; i
< symcount
; ++i
)
3040 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3041 != (SEC_CODE
| SEC_ALLOC
))
3042 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3046 for (; i
< symcount
; ++i
)
3047 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3051 for (; i
< symcount
; ++i
)
3052 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3056 for (; i
< symcount
; ++i
)
3057 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3058 != (SEC_CODE
| SEC_ALLOC
))
3066 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3071 if (opdsymend
== secsymend
)
3074 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3075 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3079 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3086 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3090 while (r
< opd
->relocation
+ relcount
3091 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3094 if (r
== opd
->relocation
+ relcount
)
3097 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3100 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3103 sym
= *r
->sym_ptr_ptr
;
3104 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3105 sym
->section
->id
, sym
->value
+ r
->addend
))
3108 size
+= sizeof (asymbol
);
3109 size
+= strlen (syms
[i
]->name
) + 2;
3113 s
= *ret
= bfd_malloc (size
);
3120 names
= (char *) (s
+ count
);
3122 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3126 while (r
< opd
->relocation
+ relcount
3127 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3130 if (r
== opd
->relocation
+ relcount
)
3133 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3136 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3139 sym
= *r
->sym_ptr_ptr
;
3140 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3141 sym
->section
->id
, sym
->value
+ r
->addend
))
3146 s
->flags
|= BSF_SYNTHETIC
;
3147 s
->section
= sym
->section
;
3148 s
->value
= sym
->value
+ r
->addend
;
3151 len
= strlen (syms
[i
]->name
);
3152 memcpy (names
, syms
[i
]->name
, len
+ 1);
3154 /* Have udata.p point back to the original symbol this
3155 synthetic symbol was derived from. */
3156 s
->udata
.p
= syms
[i
];
3163 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3167 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3168 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3171 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3175 free_contents_and_exit
:
3183 for (i
= secsymend
; i
< opdsymend
; ++i
)
3187 /* Ignore bogus symbols. */
3188 if (syms
[i
]->value
> opd
->size
- 8)
3191 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3192 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3195 size
+= sizeof (asymbol
);
3196 size
+= strlen (syms
[i
]->name
) + 2;
3200 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3202 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3204 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3206 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3208 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3209 goto free_contents_and_exit
;
3211 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3212 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3215 extdynend
= extdyn
+ dynamic
->size
;
3216 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3218 Elf_Internal_Dyn dyn
;
3219 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3221 if (dyn
.d_tag
== DT_NULL
)
3224 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3226 /* The first glink stub starts at offset 32; see comment in
3227 ppc64_elf_finish_dynamic_sections. */
3228 glink_vma
= dyn
.d_un
.d_val
+ 32;
3229 /* The .glink section usually does not survive the final
3230 link; search for the section (usually .text) where the
3231 glink stubs now reside. */
3232 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3243 /* Determine __glink trampoline by reading the relative branch
3244 from the first glink stub. */
3246 if (bfd_get_section_contents (abfd
, glink
, buf
,
3247 glink_vma
+ 4 - glink
->vma
, 4))
3249 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3251 if ((insn
& ~0x3fffffc) == 0)
3252 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3256 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3258 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3261 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3262 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3263 goto free_contents_and_exit
;
3265 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3266 size
+= plt_count
* sizeof (asymbol
);
3268 p
= relplt
->relocation
;
3269 for (i
= 0; i
< plt_count
; i
++, p
++)
3271 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3273 size
+= sizeof ("+0x") - 1 + 16;
3278 s
= *ret
= bfd_malloc (size
);
3280 goto free_contents_and_exit
;
3282 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3284 for (i
= secsymend
; i
< opdsymend
; ++i
)
3288 if (syms
[i
]->value
> opd
->size
- 8)
3291 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3292 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3296 asection
*sec
= abfd
->sections
;
3303 long mid
= (lo
+ hi
) >> 1;
3304 if (syms
[mid
]->section
->vma
< ent
)
3306 else if (syms
[mid
]->section
->vma
> ent
)
3310 sec
= syms
[mid
]->section
;
3315 if (lo
>= hi
&& lo
> codesecsym
)
3316 sec
= syms
[lo
- 1]->section
;
3318 for (; sec
!= NULL
; sec
= sec
->next
)
3322 /* SEC_LOAD may not be set if SEC is from a separate debug
3324 if ((sec
->flags
& SEC_ALLOC
) == 0)
3326 if ((sec
->flags
& SEC_CODE
) != 0)
3329 s
->flags
|= BSF_SYNTHETIC
;
3330 s
->value
= ent
- s
->section
->vma
;
3333 len
= strlen (syms
[i
]->name
);
3334 memcpy (names
, syms
[i
]->name
, len
+ 1);
3336 /* Have udata.p point back to the original symbol this
3337 synthetic symbol was derived from. */
3338 s
->udata
.p
= syms
[i
];
3344 if (glink
!= NULL
&& relplt
!= NULL
)
3348 /* Add a symbol for the main glink trampoline. */
3349 memset (s
, 0, sizeof *s
);
3351 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3353 s
->value
= resolv_vma
- glink
->vma
;
3355 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3356 names
+= sizeof ("__glink_PLTresolve");
3361 /* FIXME: It would be very much nicer to put sym@plt on the
3362 stub rather than on the glink branch table entry. The
3363 objdump disassembler would then use a sensible symbol
3364 name on plt calls. The difficulty in doing so is
3365 a) finding the stubs, and,
3366 b) matching stubs against plt entries, and,
3367 c) there can be multiple stubs for a given plt entry.
3369 Solving (a) could be done by code scanning, but older
3370 ppc64 binaries used different stubs to current code.
3371 (b) is the tricky one since you need to known the toc
3372 pointer for at least one function that uses a pic stub to
3373 be able to calculate the plt address referenced.
3374 (c) means gdb would need to set multiple breakpoints (or
3375 find the glink branch itself) when setting breakpoints
3376 for pending shared library loads. */
3377 p
= relplt
->relocation
;
3378 for (i
= 0; i
< plt_count
; i
++, p
++)
3382 *s
= **p
->sym_ptr_ptr
;
3383 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3384 we are defining a symbol, ensure one of them is set. */
3385 if ((s
->flags
& BSF_LOCAL
) == 0)
3386 s
->flags
|= BSF_GLOBAL
;
3387 s
->flags
|= BSF_SYNTHETIC
;
3389 s
->value
= glink_vma
- glink
->vma
;
3392 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3393 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3397 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3398 names
+= sizeof ("+0x") - 1;
3399 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3400 names
+= strlen (names
);
3402 memcpy (names
, "@plt", sizeof ("@plt"));
3403 names
+= sizeof ("@plt");
3418 /* The following functions are specific to the ELF linker, while
3419 functions above are used generally. Those named ppc64_elf_* are
3420 called by the main ELF linker code. They appear in this file more
3421 or less in the order in which they are called. eg.
3422 ppc64_elf_check_relocs is called early in the link process,
3423 ppc64_elf_finish_dynamic_sections is one of the last functions
3426 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3427 functions have both a function code symbol and a function descriptor
3428 symbol. A call to foo in a relocatable object file looks like:
3435 The function definition in another object file might be:
3439 . .quad .TOC.@tocbase
3445 When the linker resolves the call during a static link, the branch
3446 unsurprisingly just goes to .foo and the .opd information is unused.
3447 If the function definition is in a shared library, things are a little
3448 different: The call goes via a plt call stub, the opd information gets
3449 copied to the plt, and the linker patches the nop.
3457 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3458 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3459 . std 2,40(1) # this is the general idea
3467 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3469 The "reloc ()" notation is supposed to indicate that the linker emits
3470 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3473 What are the difficulties here? Well, firstly, the relocations
3474 examined by the linker in check_relocs are against the function code
3475 sym .foo, while the dynamic relocation in the plt is emitted against
3476 the function descriptor symbol, foo. Somewhere along the line, we need
3477 to carefully copy dynamic link information from one symbol to the other.
3478 Secondly, the generic part of the elf linker will make .foo a dynamic
3479 symbol as is normal for most other backends. We need foo dynamic
3480 instead, at least for an application final link. However, when
3481 creating a shared library containing foo, we need to have both symbols
3482 dynamic so that references to .foo are satisfied during the early
3483 stages of linking. Otherwise the linker might decide to pull in a
3484 definition from some other object, eg. a static library.
3486 Update: As of August 2004, we support a new convention. Function
3487 calls may use the function descriptor symbol, ie. "bl foo". This
3488 behaves exactly as "bl .foo". */
3490 /* The linker needs to keep track of the number of relocs that it
3491 decides to copy as dynamic relocs in check_relocs for each symbol.
3492 This is so that it can later discard them if they are found to be
3493 unnecessary. We store the information in a field extending the
3494 regular ELF linker hash table. */
3496 struct ppc_dyn_relocs
3498 struct ppc_dyn_relocs
*next
;
3500 /* The input section of the reloc. */
3503 /* Total number of relocs copied for the input section. */
3504 bfd_size_type count
;
3506 /* Number of pc-relative relocs copied for the input section. */
3507 bfd_size_type pc_count
;
3510 /* Of those relocs that might be copied as dynamic relocs, this function
3511 selects those that must be copied when linking a shared library,
3512 even when the symbol is local. */
3515 must_be_dyn_reloc (struct bfd_link_info
*info
,
3516 enum elf_ppc64_reloc_type r_type
)
3528 case R_PPC64_TPREL16
:
3529 case R_PPC64_TPREL16_LO
:
3530 case R_PPC64_TPREL16_HI
:
3531 case R_PPC64_TPREL16_HA
:
3532 case R_PPC64_TPREL16_DS
:
3533 case R_PPC64_TPREL16_LO_DS
:
3534 case R_PPC64_TPREL16_HIGHER
:
3535 case R_PPC64_TPREL16_HIGHERA
:
3536 case R_PPC64_TPREL16_HIGHEST
:
3537 case R_PPC64_TPREL16_HIGHESTA
:
3538 case R_PPC64_TPREL64
:
3539 return !info
->executable
;
3543 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3544 copying dynamic variables from a shared lib into an app's dynbss
3545 section, and instead use a dynamic relocation to point into the
3546 shared lib. With code that gcc generates, it's vital that this be
3547 enabled; In the PowerPC64 ABI, the address of a function is actually
3548 the address of a function descriptor, which resides in the .opd
3549 section. gcc uses the descriptor directly rather than going via the
3550 GOT as some other ABI's do, which means that initialized function
3551 pointers must reference the descriptor. Thus, a function pointer
3552 initialized to the address of a function in a shared library will
3553 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3554 redefines the function descriptor symbol to point to the copy. This
3555 presents a problem as a plt entry for that function is also
3556 initialized from the function descriptor symbol and the copy reloc
3557 may not be initialized first. */
3558 #define ELIMINATE_COPY_RELOCS 1
3560 /* Section name for stubs is the associated section name plus this
3562 #define STUB_SUFFIX ".stub"
3565 ppc_stub_long_branch:
3566 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3567 destination, but a 24 bit branch in a stub section will reach.
3570 ppc_stub_plt_branch:
3571 Similar to the above, but a 24 bit branch in the stub section won't
3572 reach its destination.
3573 . addis %r12,%r2,xxx@toc@ha
3574 . ld %r11,xxx@toc@l(%r12)
3579 Used to call a function in a shared library. If it so happens that
3580 the plt entry referenced crosses a 64k boundary, then an extra
3581 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3582 . addis %r12,%r2,xxx@toc@ha
3584 . ld %r11,xxx+0@toc@l(%r12)
3586 . ld %r2,xxx+8@toc@l(%r12)
3587 . ld %r11,xxx+16@toc@l(%r12)
3590 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3591 code to adjust the value and save r2 to support multiple toc sections.
3592 A ppc_stub_long_branch with an r2 offset looks like:
3594 . addis %r2,%r2,off@ha
3595 . addi %r2,%r2,off@l
3598 A ppc_stub_plt_branch with an r2 offset looks like:
3600 . addis %r12,%r2,xxx@toc@ha
3601 . ld %r11,xxx@toc@l(%r12)
3602 . addis %r2,%r2,off@ha
3603 . addi %r2,%r2,off@l
3607 In cases where the "addis" instruction would add zero, the "addis" is
3608 omitted and following instructions modified slightly in some cases.
3611 enum ppc_stub_type
{
3613 ppc_stub_long_branch
,
3614 ppc_stub_long_branch_r2off
,
3615 ppc_stub_plt_branch
,
3616 ppc_stub_plt_branch_r2off
,
3620 struct ppc_stub_hash_entry
{
3622 /* Base hash table entry structure. */
3623 struct bfd_hash_entry root
;
3625 enum ppc_stub_type stub_type
;
3627 /* The stub section. */
3630 /* Offset within stub_sec of the beginning of this stub. */
3631 bfd_vma stub_offset
;
3633 /* Given the symbol's value and its section we can determine its final
3634 value when building the stubs (so the stub knows where to jump. */
3635 bfd_vma target_value
;
3636 asection
*target_section
;
3638 /* The symbol table entry, if any, that this was derived from. */
3639 struct ppc_link_hash_entry
*h
;
3640 struct plt_entry
*plt_ent
;
3642 /* And the reloc addend that this was derived from. */
3645 /* Where this stub is being called from, or, in the case of combined
3646 stub sections, the first input section in the group. */
3650 struct ppc_branch_hash_entry
{
3652 /* Base hash table entry structure. */
3653 struct bfd_hash_entry root
;
3655 /* Offset within branch lookup table. */
3656 unsigned int offset
;
3658 /* Generation marker. */
3662 struct ppc_link_hash_entry
3664 struct elf_link_hash_entry elf
;
3667 /* A pointer to the most recently used stub hash entry against this
3669 struct ppc_stub_hash_entry
*stub_cache
;
3671 /* A pointer to the next symbol starting with a '.' */
3672 struct ppc_link_hash_entry
*next_dot_sym
;
3675 /* Track dynamic relocs copied for this symbol. */
3676 struct ppc_dyn_relocs
*dyn_relocs
;
3678 /* Link between function code and descriptor symbols. */
3679 struct ppc_link_hash_entry
*oh
;
3681 /* Flag function code and descriptor symbols. */
3682 unsigned int is_func
:1;
3683 unsigned int is_func_descriptor
:1;
3684 unsigned int fake
:1;
3686 /* Whether global opd/toc sym has been adjusted or not.
3687 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3688 should be set for all globals defined in any opd/toc section. */
3689 unsigned int adjust_done
:1;
3691 /* Set if we twiddled this symbol to weak at some stage. */
3692 unsigned int was_undefined
:1;
3694 /* Contexts in which symbol is used in the GOT (or TOC).
3695 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3696 corresponding relocs are encountered during check_relocs.
3697 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3698 indicate the corresponding GOT entry type is not needed.
3699 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3700 a TPREL one. We use a separate flag rather than setting TPREL
3701 just for convenience in distinguishing the two cases. */
3702 #define TLS_GD 1 /* GD reloc. */
3703 #define TLS_LD 2 /* LD reloc. */
3704 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3705 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3706 #define TLS_TLS 16 /* Any TLS reloc. */
3707 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3708 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3709 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3710 unsigned char tls_mask
;
3713 /* ppc64 ELF linker hash table. */
3715 struct ppc_link_hash_table
3717 struct elf_link_hash_table elf
;
3719 /* The stub hash table. */
3720 struct bfd_hash_table stub_hash_table
;
3722 /* Another hash table for plt_branch stubs. */
3723 struct bfd_hash_table branch_hash_table
;
3725 /* Linker stub bfd. */
3728 /* Linker call-backs. */
3729 asection
* (*add_stub_section
) (const char *, asection
*);
3730 void (*layout_sections_again
) (void);
3732 /* Array to keep track of which stub sections have been created, and
3733 information on stub grouping. */
3735 /* This is the section to which stubs in the group will be attached. */
3737 /* The stub section. */
3739 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3743 /* Temp used when calculating TOC pointers. */
3746 asection
*toc_first_sec
;
3748 /* Highest input section id. */
3751 /* Highest output section index. */
3754 /* Used when adding symbols. */
3755 struct ppc_link_hash_entry
*dot_syms
;
3757 /* List of input sections for each output section. */
3758 asection
**input_list
;
3760 /* Short-cuts to get to dynamic linker sections. */
3773 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3774 struct ppc_link_hash_entry
*tls_get_addr
;
3775 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3777 /* The size of reliplt used by got entry relocs. */
3778 bfd_size_type got_reli_size
;
3781 unsigned long stub_count
[ppc_stub_plt_call
];
3783 /* Number of stubs against global syms. */
3784 unsigned long stub_globals
;
3786 /* Set if we should emit symbols for stubs. */
3787 unsigned int emit_stub_syms
:1;
3789 /* Set if __tls_get_addr optimization should not be done. */
3790 unsigned int no_tls_get_addr_opt
:1;
3792 /* Support for multiple toc sections. */
3793 unsigned int do_multi_toc
:1;
3794 unsigned int multi_toc_needed
:1;
3795 unsigned int second_toc_pass
:1;
3796 unsigned int do_toc_opt
:1;
3799 unsigned int stub_error
:1;
3801 /* Temp used by ppc64_elf_process_dot_syms. */
3802 unsigned int twiddled_syms
:1;
3804 /* Incremented every time we size stubs. */
3805 unsigned int stub_iteration
;
3807 /* Small local sym cache. */
3808 struct sym_cache sym_cache
;
3811 /* Rename some of the generic section flags to better document how they
3814 /* Nonzero if this section has TLS related relocations. */
3815 #define has_tls_reloc sec_flg0
3817 /* Nonzero if this section has a call to __tls_get_addr. */
3818 #define has_tls_get_addr_call sec_flg1
3820 /* Nonzero if this section has any toc or got relocs. */
3821 #define has_toc_reloc sec_flg2
3823 /* Nonzero if this section has a call to another section that uses
3825 #define makes_toc_func_call sec_flg3
3827 /* Recursion protection when determining above flag. */
3828 #define call_check_in_progress sec_flg4
3829 #define call_check_done sec_flg5
3831 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3833 #define ppc_hash_table(p) \
3834 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3835 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3837 #define ppc_stub_hash_lookup(table, string, create, copy) \
3838 ((struct ppc_stub_hash_entry *) \
3839 bfd_hash_lookup ((table), (string), (create), (copy)))
3841 #define ppc_branch_hash_lookup(table, string, create, copy) \
3842 ((struct ppc_branch_hash_entry *) \
3843 bfd_hash_lookup ((table), (string), (create), (copy)))
3845 /* Create an entry in the stub hash table. */
3847 static struct bfd_hash_entry
*
3848 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3849 struct bfd_hash_table
*table
,
3852 /* Allocate the structure if it has not already been allocated by a
3856 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3861 /* Call the allocation method of the superclass. */
3862 entry
= bfd_hash_newfunc (entry
, table
, string
);
3865 struct ppc_stub_hash_entry
*eh
;
3867 /* Initialize the local fields. */
3868 eh
= (struct ppc_stub_hash_entry
*) entry
;
3869 eh
->stub_type
= ppc_stub_none
;
3870 eh
->stub_sec
= NULL
;
3871 eh
->stub_offset
= 0;
3872 eh
->target_value
= 0;
3873 eh
->target_section
= NULL
;
3881 /* Create an entry in the branch hash table. */
3883 static struct bfd_hash_entry
*
3884 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3885 struct bfd_hash_table
*table
,
3888 /* Allocate the structure if it has not already been allocated by a
3892 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3897 /* Call the allocation method of the superclass. */
3898 entry
= bfd_hash_newfunc (entry
, table
, string
);
3901 struct ppc_branch_hash_entry
*eh
;
3903 /* Initialize the local fields. */
3904 eh
= (struct ppc_branch_hash_entry
*) entry
;
3912 /* Create an entry in a ppc64 ELF linker hash table. */
3914 static struct bfd_hash_entry
*
3915 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3916 struct bfd_hash_table
*table
,
3919 /* Allocate the structure if it has not already been allocated by a
3923 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3928 /* Call the allocation method of the superclass. */
3929 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3932 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3934 memset (&eh
->u
.stub_cache
, 0,
3935 (sizeof (struct ppc_link_hash_entry
)
3936 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3938 /* When making function calls, old ABI code references function entry
3939 points (dot symbols), while new ABI code references the function
3940 descriptor symbol. We need to make any combination of reference and
3941 definition work together, without breaking archive linking.
3943 For a defined function "foo" and an undefined call to "bar":
3944 An old object defines "foo" and ".foo", references ".bar" (possibly
3946 A new object defines "foo" and references "bar".
3948 A new object thus has no problem with its undefined symbols being
3949 satisfied by definitions in an old object. On the other hand, the
3950 old object won't have ".bar" satisfied by a new object.
3952 Keep a list of newly added dot-symbols. */
3954 if (string
[0] == '.')
3956 struct ppc_link_hash_table
*htab
;
3958 htab
= (struct ppc_link_hash_table
*) table
;
3959 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3960 htab
->dot_syms
= eh
;
3967 /* Create a ppc64 ELF linker hash table. */
3969 static struct bfd_link_hash_table
*
3970 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3972 struct ppc_link_hash_table
*htab
;
3973 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3975 htab
= bfd_zmalloc (amt
);
3979 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3980 sizeof (struct ppc_link_hash_entry
),
3987 /* Init the stub hash table too. */
3988 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3989 sizeof (struct ppc_stub_hash_entry
)))
3992 /* And the branch hash table. */
3993 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3994 sizeof (struct ppc_branch_hash_entry
)))
3997 /* Initializing two fields of the union is just cosmetic. We really
3998 only care about glist, but when compiled on a 32-bit host the
3999 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4000 debugger inspection of these fields look nicer. */
4001 htab
->elf
.init_got_refcount
.refcount
= 0;
4002 htab
->elf
.init_got_refcount
.glist
= NULL
;
4003 htab
->elf
.init_plt_refcount
.refcount
= 0;
4004 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4005 htab
->elf
.init_got_offset
.offset
= 0;
4006 htab
->elf
.init_got_offset
.glist
= NULL
;
4007 htab
->elf
.init_plt_offset
.offset
= 0;
4008 htab
->elf
.init_plt_offset
.glist
= NULL
;
4010 return &htab
->elf
.root
;
4013 /* Free the derived linker hash table. */
4016 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4018 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
4020 bfd_hash_table_free (&ret
->stub_hash_table
);
4021 bfd_hash_table_free (&ret
->branch_hash_table
);
4022 _bfd_generic_link_hash_table_free (hash
);
4025 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4028 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4030 struct ppc_link_hash_table
*htab
;
4032 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4034 /* Always hook our dynamic sections into the first bfd, which is the
4035 linker created stub bfd. This ensures that the GOT header is at
4036 the start of the output TOC section. */
4037 htab
= ppc_hash_table (info
);
4040 htab
->stub_bfd
= abfd
;
4041 htab
->elf
.dynobj
= abfd
;
4044 /* Build a name for an entry in the stub hash table. */
4047 ppc_stub_name (const asection
*input_section
,
4048 const asection
*sym_sec
,
4049 const struct ppc_link_hash_entry
*h
,
4050 const Elf_Internal_Rela
*rel
)
4055 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4056 offsets from a sym as a branch target? In fact, we could
4057 probably assume the addend is always zero. */
4058 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4062 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4063 stub_name
= bfd_malloc (len
);
4064 if (stub_name
== NULL
)
4067 sprintf (stub_name
, "%08x.%s+%x",
4068 input_section
->id
& 0xffffffff,
4069 h
->elf
.root
.root
.string
,
4070 (int) rel
->r_addend
& 0xffffffff);
4074 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4075 stub_name
= bfd_malloc (len
);
4076 if (stub_name
== NULL
)
4079 sprintf (stub_name
, "%08x.%x:%x+%x",
4080 input_section
->id
& 0xffffffff,
4081 sym_sec
->id
& 0xffffffff,
4082 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4083 (int) rel
->r_addend
& 0xffffffff);
4085 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4086 stub_name
[len
- 2] = 0;
4090 /* Look up an entry in the stub hash. Stub entries are cached because
4091 creating the stub name takes a bit of time. */
4093 static struct ppc_stub_hash_entry
*
4094 ppc_get_stub_entry (const asection
*input_section
,
4095 const asection
*sym_sec
,
4096 struct ppc_link_hash_entry
*h
,
4097 const Elf_Internal_Rela
*rel
,
4098 struct ppc_link_hash_table
*htab
)
4100 struct ppc_stub_hash_entry
*stub_entry
;
4101 const asection
*id_sec
;
4103 /* If this input section is part of a group of sections sharing one
4104 stub section, then use the id of the first section in the group.
4105 Stub names need to include a section id, as there may well be
4106 more than one stub used to reach say, printf, and we need to
4107 distinguish between them. */
4108 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4110 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4111 && h
->u
.stub_cache
->h
== h
4112 && h
->u
.stub_cache
->id_sec
== id_sec
)
4114 stub_entry
= h
->u
.stub_cache
;
4120 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4121 if (stub_name
== NULL
)
4124 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4125 stub_name
, FALSE
, FALSE
);
4127 h
->u
.stub_cache
= stub_entry
;
4135 /* Add a new stub entry to the stub hash. Not all fields of the new
4136 stub entry are initialised. */
4138 static struct ppc_stub_hash_entry
*
4139 ppc_add_stub (const char *stub_name
,
4141 struct ppc_link_hash_table
*htab
)
4145 struct ppc_stub_hash_entry
*stub_entry
;
4147 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4148 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4149 if (stub_sec
== NULL
)
4151 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4152 if (stub_sec
== NULL
)
4158 namelen
= strlen (link_sec
->name
);
4159 len
= namelen
+ sizeof (STUB_SUFFIX
);
4160 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4164 memcpy (s_name
, link_sec
->name
, namelen
);
4165 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4166 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4167 if (stub_sec
== NULL
)
4169 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4171 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4174 /* Enter this entry into the linker stub hash table. */
4175 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4177 if (stub_entry
== NULL
)
4179 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4180 section
->owner
, stub_name
);
4184 stub_entry
->stub_sec
= stub_sec
;
4185 stub_entry
->stub_offset
= 0;
4186 stub_entry
->id_sec
= link_sec
;
4190 /* Create sections for linker generated code. */
4193 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4195 struct ppc_link_hash_table
*htab
;
4198 htab
= ppc_hash_table (info
);
4202 /* Create .sfpr for code to save and restore fp regs. */
4203 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4204 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4205 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4207 if (htab
->sfpr
== NULL
4208 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4211 /* Create .glink for lazy dynamic linking support. */
4212 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4214 if (htab
->glink
== NULL
4215 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4218 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4219 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4220 if (htab
->iplt
== NULL
4221 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4224 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4225 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4226 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4229 if (htab
->reliplt
== NULL
4230 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4233 /* Create branch lookup table for plt_branch stubs. */
4234 flags
= (SEC_ALLOC
| SEC_LOAD
4235 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4236 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4238 if (htab
->brlt
== NULL
4239 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4245 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4246 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4247 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4250 if (htab
->relbrlt
== NULL
4251 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4257 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4258 not already done. */
4261 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4263 asection
*got
, *relgot
;
4265 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4267 if (!is_ppc64_elf (abfd
))
4274 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4277 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4282 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4283 | SEC_LINKER_CREATED
);
4285 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4287 || !bfd_set_section_alignment (abfd
, got
, 3))
4290 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4291 flags
| SEC_READONLY
);
4293 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4296 ppc64_elf_tdata (abfd
)->got
= got
;
4297 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4301 /* Create the dynamic sections, and set up shortcuts. */
4304 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4306 struct ppc_link_hash_table
*htab
;
4308 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4311 htab
= ppc_hash_table (info
);
4316 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4317 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4318 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4319 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4321 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4323 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4324 || (!info
->shared
&& !htab
->relbss
))
4330 /* Follow indirect and warning symbol links. */
4332 static inline struct bfd_link_hash_entry
*
4333 follow_link (struct bfd_link_hash_entry
*h
)
4335 while (h
->type
== bfd_link_hash_indirect
4336 || h
->type
== bfd_link_hash_warning
)
4341 static inline struct elf_link_hash_entry
*
4342 elf_follow_link (struct elf_link_hash_entry
*h
)
4344 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4347 static inline struct ppc_link_hash_entry
*
4348 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4350 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4353 /* Merge PLT info on FROM with that on TO. */
4356 move_plt_plist (struct ppc_link_hash_entry
*from
,
4357 struct ppc_link_hash_entry
*to
)
4359 if (from
->elf
.plt
.plist
!= NULL
)
4361 if (to
->elf
.plt
.plist
!= NULL
)
4363 struct plt_entry
**entp
;
4364 struct plt_entry
*ent
;
4366 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4368 struct plt_entry
*dent
;
4370 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4371 if (dent
->addend
== ent
->addend
)
4373 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4380 *entp
= to
->elf
.plt
.plist
;
4383 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4384 from
->elf
.plt
.plist
= NULL
;
4388 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4391 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4392 struct elf_link_hash_entry
*dir
,
4393 struct elf_link_hash_entry
*ind
)
4395 struct ppc_link_hash_entry
*edir
, *eind
;
4397 edir
= (struct ppc_link_hash_entry
*) dir
;
4398 eind
= (struct ppc_link_hash_entry
*) ind
;
4400 /* Copy over any dynamic relocs we may have on the indirect sym. */
4401 if (eind
->dyn_relocs
!= NULL
)
4403 if (edir
->dyn_relocs
!= NULL
)
4405 struct ppc_dyn_relocs
**pp
;
4406 struct ppc_dyn_relocs
*p
;
4408 /* Add reloc counts against the indirect sym to the direct sym
4409 list. Merge any entries against the same section. */
4410 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4412 struct ppc_dyn_relocs
*q
;
4414 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4415 if (q
->sec
== p
->sec
)
4417 q
->pc_count
+= p
->pc_count
;
4418 q
->count
+= p
->count
;
4425 *pp
= edir
->dyn_relocs
;
4428 edir
->dyn_relocs
= eind
->dyn_relocs
;
4429 eind
->dyn_relocs
= NULL
;
4432 edir
->is_func
|= eind
->is_func
;
4433 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4434 edir
->tls_mask
|= eind
->tls_mask
;
4435 if (eind
->oh
!= NULL
)
4436 edir
->oh
= ppc_follow_link (eind
->oh
);
4438 /* If called to transfer flags for a weakdef during processing
4439 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4440 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4441 if (!(ELIMINATE_COPY_RELOCS
4442 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4443 && edir
->elf
.dynamic_adjusted
))
4444 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4446 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4447 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4448 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4449 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4451 /* If we were called to copy over info for a weak sym, that's all. */
4452 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4455 /* Copy over got entries that we may have already seen to the
4456 symbol which just became indirect. */
4457 if (eind
->elf
.got
.glist
!= NULL
)
4459 if (edir
->elf
.got
.glist
!= NULL
)
4461 struct got_entry
**entp
;
4462 struct got_entry
*ent
;
4464 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4466 struct got_entry
*dent
;
4468 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4469 if (dent
->addend
== ent
->addend
4470 && dent
->owner
== ent
->owner
4471 && dent
->tls_type
== ent
->tls_type
)
4473 dent
->got
.refcount
+= ent
->got
.refcount
;
4480 *entp
= edir
->elf
.got
.glist
;
4483 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4484 eind
->elf
.got
.glist
= NULL
;
4487 /* And plt entries. */
4488 move_plt_plist (eind
, edir
);
4490 if (eind
->elf
.dynindx
!= -1)
4492 if (edir
->elf
.dynindx
!= -1)
4493 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4494 edir
->elf
.dynstr_index
);
4495 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4496 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4497 eind
->elf
.dynindx
= -1;
4498 eind
->elf
.dynstr_index
= 0;
4502 /* Find the function descriptor hash entry from the given function code
4503 hash entry FH. Link the entries via their OH fields. */
4505 static struct ppc_link_hash_entry
*
4506 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4508 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4512 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4514 fdh
= (struct ppc_link_hash_entry
*)
4515 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4519 fdh
->is_func_descriptor
= 1;
4525 return ppc_follow_link (fdh
);
4528 /* Make a fake function descriptor sym for the code sym FH. */
4530 static struct ppc_link_hash_entry
*
4531 make_fdh (struct bfd_link_info
*info
,
4532 struct ppc_link_hash_entry
*fh
)
4536 struct bfd_link_hash_entry
*bh
;
4537 struct ppc_link_hash_entry
*fdh
;
4539 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4540 newsym
= bfd_make_empty_symbol (abfd
);
4541 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4542 newsym
->section
= bfd_und_section_ptr
;
4544 newsym
->flags
= BSF_WEAK
;
4547 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4548 newsym
->flags
, newsym
->section
,
4549 newsym
->value
, NULL
, FALSE
, FALSE
,
4553 fdh
= (struct ppc_link_hash_entry
*) bh
;
4554 fdh
->elf
.non_elf
= 0;
4556 fdh
->is_func_descriptor
= 1;
4563 /* Fix function descriptor symbols defined in .opd sections to be
4567 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4568 struct bfd_link_info
*info
,
4569 Elf_Internal_Sym
*isym
,
4570 const char **name ATTRIBUTE_UNUSED
,
4571 flagword
*flags ATTRIBUTE_UNUSED
,
4573 bfd_vma
*value ATTRIBUTE_UNUSED
)
4575 if ((ibfd
->flags
& DYNAMIC
) == 0
4576 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4577 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4579 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4581 if ((ibfd
->flags
& DYNAMIC
) == 0)
4582 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4584 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4586 else if (*sec
!= NULL
4587 && strcmp ((*sec
)->name
, ".opd") == 0)
4588 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4593 /* This function makes an old ABI object reference to ".bar" cause the
4594 inclusion of a new ABI object archive that defines "bar".
4595 NAME is a symbol defined in an archive. Return a symbol in the hash
4596 table that might be satisfied by the archive symbols. */
4598 static struct elf_link_hash_entry
*
4599 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4600 struct bfd_link_info
*info
,
4603 struct elf_link_hash_entry
*h
;
4607 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4609 /* Don't return this sym if it is a fake function descriptor
4610 created by add_symbol_adjust. */
4611 && !(h
->root
.type
== bfd_link_hash_undefweak
4612 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4618 len
= strlen (name
);
4619 dot_name
= bfd_alloc (abfd
, len
+ 2);
4620 if (dot_name
== NULL
)
4621 return (struct elf_link_hash_entry
*) 0 - 1;
4623 memcpy (dot_name
+ 1, name
, len
+ 1);
4624 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4625 bfd_release (abfd
, dot_name
);
4629 /* This function satisfies all old ABI object references to ".bar" if a
4630 new ABI object defines "bar". Well, at least, undefined dot symbols
4631 are made weak. This stops later archive searches from including an
4632 object if we already have a function descriptor definition. It also
4633 prevents the linker complaining about undefined symbols.
4634 We also check and correct mismatched symbol visibility here. The
4635 most restrictive visibility of the function descriptor and the
4636 function entry symbol is used. */
4639 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4641 struct ppc_link_hash_table
*htab
;
4642 struct ppc_link_hash_entry
*fdh
;
4644 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4647 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4648 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4650 if (eh
->elf
.root
.root
.string
[0] != '.')
4653 htab
= ppc_hash_table (info
);
4657 fdh
= lookup_fdh (eh
, htab
);
4660 if (!info
->relocatable
4661 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4662 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4663 && eh
->elf
.ref_regular
)
4665 /* Make an undefweak function descriptor sym, which is enough to
4666 pull in an --as-needed shared lib, but won't cause link
4667 errors. Archives are handled elsewhere. */
4668 fdh
= make_fdh (info
, eh
);
4671 fdh
->elf
.ref_regular
= 1;
4676 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4677 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4678 if (entry_vis
< descr_vis
)
4679 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4680 else if (entry_vis
> descr_vis
)
4681 eh
->elf
.other
+= descr_vis
- entry_vis
;
4683 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4684 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4685 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4687 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4688 eh
->was_undefined
= 1;
4689 htab
->twiddled_syms
= 1;
4696 /* Process list of dot-symbols we made in link_hash_newfunc. */
4699 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4701 struct ppc_link_hash_table
*htab
;
4702 struct ppc_link_hash_entry
**p
, *eh
;
4704 if (!is_ppc64_elf (info
->output_bfd
))
4706 htab
= ppc_hash_table (info
);
4710 if (is_ppc64_elf (ibfd
))
4712 p
= &htab
->dot_syms
;
4713 while ((eh
= *p
) != NULL
)
4716 if (!add_symbol_adjust (eh
, info
))
4718 p
= &eh
->u
.next_dot_sym
;
4722 /* Clear the list for non-ppc64 input files. */
4723 p
= &htab
->dot_syms
;
4724 while ((eh
= *p
) != NULL
)
4727 p
= &eh
->u
.next_dot_sym
;
4730 /* We need to fix the undefs list for any syms we have twiddled to
4732 if (htab
->twiddled_syms
)
4734 bfd_link_repair_undef_list (&htab
->elf
.root
);
4735 htab
->twiddled_syms
= 0;
4740 /* Undo hash table changes when an --as-needed input file is determined
4741 not to be needed. */
4744 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4745 struct bfd_link_info
*info
)
4747 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4752 htab
->dot_syms
= NULL
;
4756 /* If --just-symbols against a final linked binary, then assume we need
4757 toc adjusting stubs when calling functions defined there. */
4760 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4762 if ((sec
->flags
& SEC_CODE
) != 0
4763 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4764 && is_ppc64_elf (sec
->owner
))
4766 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4768 && got
->size
>= elf_backend_got_header_size
4769 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4770 sec
->has_toc_reloc
= 1;
4772 _bfd_elf_link_just_syms (sec
, info
);
4775 static struct plt_entry
**
4776 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4777 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4779 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4780 struct plt_entry
**local_plt
;
4781 unsigned char *local_got_tls_masks
;
4783 if (local_got_ents
== NULL
)
4785 bfd_size_type size
= symtab_hdr
->sh_info
;
4787 size
*= (sizeof (*local_got_ents
)
4788 + sizeof (*local_plt
)
4789 + sizeof (*local_got_tls_masks
));
4790 local_got_ents
= bfd_zalloc (abfd
, size
);
4791 if (local_got_ents
== NULL
)
4793 elf_local_got_ents (abfd
) = local_got_ents
;
4796 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4798 struct got_entry
*ent
;
4800 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4801 if (ent
->addend
== r_addend
4802 && ent
->owner
== abfd
4803 && ent
->tls_type
== tls_type
)
4807 bfd_size_type amt
= sizeof (*ent
);
4808 ent
= bfd_alloc (abfd
, amt
);
4811 ent
->next
= local_got_ents
[r_symndx
];
4812 ent
->addend
= r_addend
;
4814 ent
->tls_type
= tls_type
;
4815 ent
->is_indirect
= FALSE
;
4816 ent
->got
.refcount
= 0;
4817 local_got_ents
[r_symndx
] = ent
;
4819 ent
->got
.refcount
+= 1;
4822 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4823 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4824 local_got_tls_masks
[r_symndx
] |= tls_type
;
4826 return local_plt
+ r_symndx
;
4830 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4832 struct plt_entry
*ent
;
4834 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4835 if (ent
->addend
== addend
)
4839 bfd_size_type amt
= sizeof (*ent
);
4840 ent
= bfd_alloc (abfd
, amt
);
4844 ent
->addend
= addend
;
4845 ent
->plt
.refcount
= 0;
4848 ent
->plt
.refcount
+= 1;
4853 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4855 return (r_type
== R_PPC64_REL24
4856 || r_type
== R_PPC64_REL14
4857 || r_type
== R_PPC64_REL14_BRTAKEN
4858 || r_type
== R_PPC64_REL14_BRNTAKEN
4859 || r_type
== R_PPC64_ADDR24
4860 || r_type
== R_PPC64_ADDR14
4861 || r_type
== R_PPC64_ADDR14_BRTAKEN
4862 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4865 /* Look through the relocs for a section during the first phase, and
4866 calculate needed space in the global offset table, procedure
4867 linkage table, and dynamic reloc sections. */
4870 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4871 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4873 struct ppc_link_hash_table
*htab
;
4874 Elf_Internal_Shdr
*symtab_hdr
;
4875 struct elf_link_hash_entry
**sym_hashes
;
4876 const Elf_Internal_Rela
*rel
;
4877 const Elf_Internal_Rela
*rel_end
;
4879 asection
**opd_sym_map
;
4880 struct elf_link_hash_entry
*tga
, *dottga
;
4882 if (info
->relocatable
)
4885 /* Don't do anything special with non-loaded, non-alloced sections.
4886 In particular, any relocs in such sections should not affect GOT
4887 and PLT reference counting (ie. we don't allow them to create GOT
4888 or PLT entries), there's no possibility or desire to optimize TLS
4889 relocs, and there's not much point in propagating relocs to shared
4890 libs that the dynamic linker won't relocate. */
4891 if ((sec
->flags
& SEC_ALLOC
) == 0)
4894 BFD_ASSERT (is_ppc64_elf (abfd
));
4896 htab
= ppc_hash_table (info
);
4900 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4901 FALSE
, FALSE
, TRUE
);
4902 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4903 FALSE
, FALSE
, TRUE
);
4904 symtab_hdr
= &elf_symtab_hdr (abfd
);
4905 sym_hashes
= elf_sym_hashes (abfd
);
4908 if (strcmp (sec
->name
, ".opd") == 0)
4910 /* Garbage collection needs some extra help with .opd sections.
4911 We don't want to necessarily keep everything referenced by
4912 relocs in .opd, as that would keep all functions. Instead,
4913 if we reference an .opd symbol (a function descriptor), we
4914 want to keep the function code symbol's section. This is
4915 easy for global symbols, but for local syms we need to keep
4916 information about the associated function section. */
4919 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4920 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4921 if (opd_sym_map
== NULL
)
4923 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4924 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4925 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4928 if (htab
->sfpr
== NULL
4929 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4932 rel_end
= relocs
+ sec
->reloc_count
;
4933 for (rel
= relocs
; rel
< rel_end
; rel
++)
4935 unsigned long r_symndx
;
4936 struct elf_link_hash_entry
*h
;
4937 enum elf_ppc64_reloc_type r_type
;
4939 struct _ppc64_elf_section_data
*ppc64_sec
;
4940 struct plt_entry
**ifunc
;
4942 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4943 if (r_symndx
< symtab_hdr
->sh_info
)
4947 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4948 h
= elf_follow_link (h
);
4955 if (h
->type
== STT_GNU_IFUNC
)
4958 ifunc
= &h
->plt
.plist
;
4963 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4968 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4970 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4971 rel
->r_addend
, PLT_IFUNC
);
4976 r_type
= ELF64_R_TYPE (rel
->r_info
);
4977 if (is_branch_reloc (r_type
))
4979 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4982 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4983 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4984 /* We have a new-style __tls_get_addr call with a marker
4988 /* Mark this section as having an old-style call. */
4989 sec
->has_tls_get_addr_call
= 1;
4992 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4994 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5002 /* These special tls relocs tie a call to __tls_get_addr with
5003 its parameter symbol. */
5006 case R_PPC64_GOT_TLSLD16
:
5007 case R_PPC64_GOT_TLSLD16_LO
:
5008 case R_PPC64_GOT_TLSLD16_HI
:
5009 case R_PPC64_GOT_TLSLD16_HA
:
5010 tls_type
= TLS_TLS
| TLS_LD
;
5013 case R_PPC64_GOT_TLSGD16
:
5014 case R_PPC64_GOT_TLSGD16_LO
:
5015 case R_PPC64_GOT_TLSGD16_HI
:
5016 case R_PPC64_GOT_TLSGD16_HA
:
5017 tls_type
= TLS_TLS
| TLS_GD
;
5020 case R_PPC64_GOT_TPREL16_DS
:
5021 case R_PPC64_GOT_TPREL16_LO_DS
:
5022 case R_PPC64_GOT_TPREL16_HI
:
5023 case R_PPC64_GOT_TPREL16_HA
:
5024 if (!info
->executable
)
5025 info
->flags
|= DF_STATIC_TLS
;
5026 tls_type
= TLS_TLS
| TLS_TPREL
;
5029 case R_PPC64_GOT_DTPREL16_DS
:
5030 case R_PPC64_GOT_DTPREL16_LO_DS
:
5031 case R_PPC64_GOT_DTPREL16_HI
:
5032 case R_PPC64_GOT_DTPREL16_HA
:
5033 tls_type
= TLS_TLS
| TLS_DTPREL
;
5035 sec
->has_tls_reloc
= 1;
5039 case R_PPC64_GOT16_DS
:
5040 case R_PPC64_GOT16_HA
:
5041 case R_PPC64_GOT16_HI
:
5042 case R_PPC64_GOT16_LO
:
5043 case R_PPC64_GOT16_LO_DS
:
5044 /* This symbol requires a global offset table entry. */
5045 sec
->has_toc_reloc
= 1;
5046 if (r_type
== R_PPC64_GOT_TLSLD16
5047 || r_type
== R_PPC64_GOT_TLSGD16
5048 || r_type
== R_PPC64_GOT_TPREL16_DS
5049 || r_type
== R_PPC64_GOT_DTPREL16_DS
5050 || r_type
== R_PPC64_GOT16
5051 || r_type
== R_PPC64_GOT16_DS
)
5053 htab
->do_multi_toc
= 1;
5054 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5057 if (ppc64_elf_tdata (abfd
)->got
== NULL
5058 && !create_got_section (abfd
, info
))
5063 struct ppc_link_hash_entry
*eh
;
5064 struct got_entry
*ent
;
5066 eh
= (struct ppc_link_hash_entry
*) h
;
5067 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5068 if (ent
->addend
== rel
->r_addend
5069 && ent
->owner
== abfd
5070 && ent
->tls_type
== tls_type
)
5074 bfd_size_type amt
= sizeof (*ent
);
5075 ent
= bfd_alloc (abfd
, amt
);
5078 ent
->next
= eh
->elf
.got
.glist
;
5079 ent
->addend
= rel
->r_addend
;
5081 ent
->tls_type
= tls_type
;
5082 ent
->is_indirect
= FALSE
;
5083 ent
->got
.refcount
= 0;
5084 eh
->elf
.got
.glist
= ent
;
5086 ent
->got
.refcount
+= 1;
5087 eh
->tls_mask
|= tls_type
;
5090 /* This is a global offset table entry for a local symbol. */
5091 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5092 rel
->r_addend
, tls_type
))
5096 case R_PPC64_PLT16_HA
:
5097 case R_PPC64_PLT16_HI
:
5098 case R_PPC64_PLT16_LO
:
5101 /* This symbol requires a procedure linkage table entry. We
5102 actually build the entry in adjust_dynamic_symbol,
5103 because this might be a case of linking PIC code without
5104 linking in any dynamic objects, in which case we don't
5105 need to generate a procedure linkage table after all. */
5108 /* It does not make sense to have a procedure linkage
5109 table entry for a local symbol. */
5110 bfd_set_error (bfd_error_bad_value
);
5115 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5118 if (h
->root
.root
.string
[0] == '.'
5119 && h
->root
.root
.string
[1] != '\0')
5120 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5124 /* The following relocations don't need to propagate the
5125 relocation if linking a shared object since they are
5126 section relative. */
5127 case R_PPC64_SECTOFF
:
5128 case R_PPC64_SECTOFF_LO
:
5129 case R_PPC64_SECTOFF_HI
:
5130 case R_PPC64_SECTOFF_HA
:
5131 case R_PPC64_SECTOFF_DS
:
5132 case R_PPC64_SECTOFF_LO_DS
:
5133 case R_PPC64_DTPREL16
:
5134 case R_PPC64_DTPREL16_LO
:
5135 case R_PPC64_DTPREL16_HI
:
5136 case R_PPC64_DTPREL16_HA
:
5137 case R_PPC64_DTPREL16_DS
:
5138 case R_PPC64_DTPREL16_LO_DS
:
5139 case R_PPC64_DTPREL16_HIGHER
:
5140 case R_PPC64_DTPREL16_HIGHERA
:
5141 case R_PPC64_DTPREL16_HIGHEST
:
5142 case R_PPC64_DTPREL16_HIGHESTA
:
5147 case R_PPC64_REL16_LO
:
5148 case R_PPC64_REL16_HI
:
5149 case R_PPC64_REL16_HA
:
5153 case R_PPC64_TOC16_DS
:
5154 htab
->do_multi_toc
= 1;
5155 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5156 case R_PPC64_TOC16_LO
:
5157 case R_PPC64_TOC16_HI
:
5158 case R_PPC64_TOC16_HA
:
5159 case R_PPC64_TOC16_LO_DS
:
5160 sec
->has_toc_reloc
= 1;
5163 /* This relocation describes the C++ object vtable hierarchy.
5164 Reconstruct it for later use during GC. */
5165 case R_PPC64_GNU_VTINHERIT
:
5166 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5170 /* This relocation describes which C++ vtable entries are actually
5171 used. Record for later use during GC. */
5172 case R_PPC64_GNU_VTENTRY
:
5173 BFD_ASSERT (h
!= NULL
);
5175 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5180 case R_PPC64_REL14_BRTAKEN
:
5181 case R_PPC64_REL14_BRNTAKEN
:
5183 asection
*dest
= NULL
;
5185 /* Heuristic: If jumping outside our section, chances are
5186 we are going to need a stub. */
5189 /* If the sym is weak it may be overridden later, so
5190 don't assume we know where a weak sym lives. */
5191 if (h
->root
.type
== bfd_link_hash_defined
)
5192 dest
= h
->root
.u
.def
.section
;
5196 Elf_Internal_Sym
*isym
;
5198 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5203 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5207 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5212 if (h
!= NULL
&& ifunc
== NULL
)
5214 /* We may need a .plt entry if the function this reloc
5215 refers to is in a shared lib. */
5216 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5219 if (h
->root
.root
.string
[0] == '.'
5220 && h
->root
.root
.string
[1] != '\0')
5221 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5222 if (h
== tga
|| h
== dottga
)
5223 sec
->has_tls_reloc
= 1;
5227 case R_PPC64_TPREL64
:
5228 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5229 if (!info
->executable
)
5230 info
->flags
|= DF_STATIC_TLS
;
5233 case R_PPC64_DTPMOD64
:
5234 if (rel
+ 1 < rel_end
5235 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5236 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5237 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5239 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5242 case R_PPC64_DTPREL64
:
5243 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5245 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5246 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5247 /* This is the second reloc of a dtpmod, dtprel pair.
5248 Don't mark with TLS_DTPREL. */
5252 sec
->has_tls_reloc
= 1;
5255 struct ppc_link_hash_entry
*eh
;
5256 eh
= (struct ppc_link_hash_entry
*) h
;
5257 eh
->tls_mask
|= tls_type
;
5260 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5261 rel
->r_addend
, tls_type
))
5264 ppc64_sec
= ppc64_elf_section_data (sec
);
5265 if (ppc64_sec
->sec_type
!= sec_toc
)
5269 /* One extra to simplify get_tls_mask. */
5270 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5271 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5272 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5274 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5275 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5276 if (ppc64_sec
->u
.toc
.add
== NULL
)
5278 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5279 ppc64_sec
->sec_type
= sec_toc
;
5281 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5282 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5283 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5285 /* Mark the second slot of a GD or LD entry.
5286 -1 to indicate GD and -2 to indicate LD. */
5287 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5288 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5289 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5290 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5293 case R_PPC64_TPREL16
:
5294 case R_PPC64_TPREL16_LO
:
5295 case R_PPC64_TPREL16_HI
:
5296 case R_PPC64_TPREL16_HA
:
5297 case R_PPC64_TPREL16_DS
:
5298 case R_PPC64_TPREL16_LO_DS
:
5299 case R_PPC64_TPREL16_HIGHER
:
5300 case R_PPC64_TPREL16_HIGHERA
:
5301 case R_PPC64_TPREL16_HIGHEST
:
5302 case R_PPC64_TPREL16_HIGHESTA
:
5305 if (!info
->executable
)
5306 info
->flags
|= DF_STATIC_TLS
;
5311 case R_PPC64_ADDR64
:
5312 if (opd_sym_map
!= NULL
5313 && rel
+ 1 < rel_end
5314 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5318 if (h
->root
.root
.string
[0] == '.'
5319 && h
->root
.root
.string
[1] != 0
5320 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5323 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5328 Elf_Internal_Sym
*isym
;
5330 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5335 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5336 if (s
!= NULL
&& s
!= sec
)
5337 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5345 case R_PPC64_ADDR14
:
5346 case R_PPC64_ADDR14_BRNTAKEN
:
5347 case R_PPC64_ADDR14_BRTAKEN
:
5348 case R_PPC64_ADDR16
:
5349 case R_PPC64_ADDR16_DS
:
5350 case R_PPC64_ADDR16_HA
:
5351 case R_PPC64_ADDR16_HI
:
5352 case R_PPC64_ADDR16_HIGHER
:
5353 case R_PPC64_ADDR16_HIGHERA
:
5354 case R_PPC64_ADDR16_HIGHEST
:
5355 case R_PPC64_ADDR16_HIGHESTA
:
5356 case R_PPC64_ADDR16_LO
:
5357 case R_PPC64_ADDR16_LO_DS
:
5358 case R_PPC64_ADDR24
:
5359 case R_PPC64_ADDR32
:
5360 case R_PPC64_UADDR16
:
5361 case R_PPC64_UADDR32
:
5362 case R_PPC64_UADDR64
:
5364 if (h
!= NULL
&& !info
->shared
)
5365 /* We may need a copy reloc. */
5368 /* Don't propagate .opd relocs. */
5369 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5372 /* If we are creating a shared library, and this is a reloc
5373 against a global symbol, or a non PC relative reloc
5374 against a local symbol, then we need to copy the reloc
5375 into the shared library. However, if we are linking with
5376 -Bsymbolic, we do not need to copy a reloc against a
5377 global symbol which is defined in an object we are
5378 including in the link (i.e., DEF_REGULAR is set). At
5379 this point we have not seen all the input files, so it is
5380 possible that DEF_REGULAR is not set now but will be set
5381 later (it is never cleared). In case of a weak definition,
5382 DEF_REGULAR may be cleared later by a strong definition in
5383 a shared library. We account for that possibility below by
5384 storing information in the dyn_relocs field of the hash
5385 table entry. A similar situation occurs when creating
5386 shared libraries and symbol visibility changes render the
5389 If on the other hand, we are creating an executable, we
5390 may need to keep relocations for symbols satisfied by a
5391 dynamic library if we manage to avoid copy relocs for the
5395 && (must_be_dyn_reloc (info
, r_type
)
5397 && (! info
->symbolic
5398 || h
->root
.type
== bfd_link_hash_defweak
5399 || !h
->def_regular
))))
5400 || (ELIMINATE_COPY_RELOCS
5403 && (h
->root
.type
== bfd_link_hash_defweak
5404 || !h
->def_regular
))
5408 struct ppc_dyn_relocs
*p
;
5409 struct ppc_dyn_relocs
**head
;
5411 /* We must copy these reloc types into the output file.
5412 Create a reloc section in dynobj and make room for
5416 sreloc
= _bfd_elf_make_dynamic_reloc_section
5417 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5423 /* If this is a global symbol, we count the number of
5424 relocations we need for this symbol. */
5427 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5431 /* Track dynamic relocs needed for local syms too.
5432 We really need local syms available to do this
5436 Elf_Internal_Sym
*isym
;
5438 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5443 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5447 vpp
= &elf_section_data (s
)->local_dynrel
;
5448 head
= (struct ppc_dyn_relocs
**) vpp
;
5452 if (p
== NULL
|| p
->sec
!= sec
)
5454 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5465 if (!must_be_dyn_reloc (info
, r_type
))
5478 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5479 of the code entry point, and its section. */
5482 opd_entry_value (asection
*opd_sec
,
5484 asection
**code_sec
,
5487 bfd
*opd_bfd
= opd_sec
->owner
;
5488 Elf_Internal_Rela
*relocs
;
5489 Elf_Internal_Rela
*lo
, *hi
, *look
;
5492 /* No relocs implies we are linking a --just-symbols object. */
5493 if (opd_sec
->reloc_count
== 0)
5497 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5498 return (bfd_vma
) -1;
5500 val
= bfd_get_64 (opd_bfd
, buf
);
5501 if (code_sec
!= NULL
)
5503 asection
*sec
, *likely
= NULL
;
5504 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5506 && (sec
->flags
& SEC_LOAD
) != 0
5507 && (sec
->flags
& SEC_ALLOC
) != 0)
5512 if (code_off
!= NULL
)
5513 *code_off
= val
- likely
->vma
;
5519 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5521 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5523 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5525 /* Go find the opd reloc at the sym address. */
5527 BFD_ASSERT (lo
!= NULL
);
5528 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5532 look
= lo
+ (hi
- lo
) / 2;
5533 if (look
->r_offset
< offset
)
5535 else if (look
->r_offset
> offset
)
5539 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5541 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5542 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5544 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5547 if (symndx
< symtab_hdr
->sh_info
)
5549 Elf_Internal_Sym
*sym
;
5551 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5554 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5555 symtab_hdr
->sh_info
,
5556 0, NULL
, NULL
, NULL
);
5559 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5563 val
= sym
->st_value
;
5564 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5565 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5569 struct elf_link_hash_entry
**sym_hashes
;
5570 struct elf_link_hash_entry
*rh
;
5572 sym_hashes
= elf_sym_hashes (opd_bfd
);
5573 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5574 rh
= elf_follow_link (rh
);
5575 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5576 || rh
->root
.type
== bfd_link_hash_defweak
);
5577 val
= rh
->root
.u
.def
.value
;
5578 sec
= rh
->root
.u
.def
.section
;
5580 val
+= look
->r_addend
;
5581 if (code_off
!= NULL
)
5583 if (code_sec
!= NULL
)
5585 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5586 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5595 /* Return true if symbol is defined in a regular object file. */
5598 is_static_defined (struct elf_link_hash_entry
*h
)
5600 return ((h
->root
.type
== bfd_link_hash_defined
5601 || h
->root
.type
== bfd_link_hash_defweak
)
5602 && h
->root
.u
.def
.section
!= NULL
5603 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5606 /* If FDH is a function descriptor symbol, return the associated code
5607 entry symbol if it is defined. Return NULL otherwise. */
5609 static struct ppc_link_hash_entry
*
5610 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5612 if (fdh
->is_func_descriptor
)
5614 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5615 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5616 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5622 /* If FH is a function code entry symbol, return the associated
5623 function descriptor symbol if it is defined. Return NULL otherwise. */
5625 static struct ppc_link_hash_entry
*
5626 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5629 && fh
->oh
->is_func_descriptor
)
5631 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5632 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5633 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5639 /* Mark all our entry sym sections, both opd and code section. */
5642 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5644 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5645 struct bfd_sym_chain
*sym
;
5650 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5652 struct ppc_link_hash_entry
*eh
, *fh
;
5655 eh
= (struct ppc_link_hash_entry
*)
5656 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5659 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5660 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5663 fh
= defined_code_entry (eh
);
5666 sec
= fh
->elf
.root
.u
.def
.section
;
5667 sec
->flags
|= SEC_KEEP
;
5669 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5670 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5671 eh
->elf
.root
.u
.def
.value
,
5672 &sec
, NULL
) != (bfd_vma
) -1)
5673 sec
->flags
|= SEC_KEEP
;
5675 sec
= eh
->elf
.root
.u
.def
.section
;
5676 sec
->flags
|= SEC_KEEP
;
5680 /* Mark sections containing dynamically referenced symbols. When
5681 building shared libraries, we must assume that any visible symbol is
5685 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5687 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5688 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5689 struct ppc_link_hash_entry
*fdh
;
5691 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5692 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5694 /* Dynamic linking info is on the func descriptor sym. */
5695 fdh
= defined_func_desc (eh
);
5699 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5700 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5701 && (eh
->elf
.ref_dynamic
5702 || (!info
->executable
5703 && eh
->elf
.def_regular
5704 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5705 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5708 struct ppc_link_hash_entry
*fh
;
5710 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5712 /* Function descriptor syms cause the associated
5713 function code sym section to be marked. */
5714 fh
= defined_code_entry (eh
);
5717 code_sec
= fh
->elf
.root
.u
.def
.section
;
5718 code_sec
->flags
|= SEC_KEEP
;
5720 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5721 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5722 eh
->elf
.root
.u
.def
.value
,
5723 &code_sec
, NULL
) != (bfd_vma
) -1)
5724 code_sec
->flags
|= SEC_KEEP
;
5730 /* Return the section that should be marked against GC for a given
5734 ppc64_elf_gc_mark_hook (asection
*sec
,
5735 struct bfd_link_info
*info
,
5736 Elf_Internal_Rela
*rel
,
5737 struct elf_link_hash_entry
*h
,
5738 Elf_Internal_Sym
*sym
)
5742 /* Syms return NULL if we're marking .opd, so we avoid marking all
5743 function sections, as all functions are referenced in .opd. */
5745 if (get_opd_info (sec
) != NULL
)
5750 enum elf_ppc64_reloc_type r_type
;
5751 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5753 r_type
= ELF64_R_TYPE (rel
->r_info
);
5756 case R_PPC64_GNU_VTINHERIT
:
5757 case R_PPC64_GNU_VTENTRY
:
5761 switch (h
->root
.type
)
5763 case bfd_link_hash_defined
:
5764 case bfd_link_hash_defweak
:
5765 eh
= (struct ppc_link_hash_entry
*) h
;
5766 fdh
= defined_func_desc (eh
);
5770 /* Function descriptor syms cause the associated
5771 function code sym section to be marked. */
5772 fh
= defined_code_entry (eh
);
5775 /* They also mark their opd section. */
5776 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5778 rsec
= fh
->elf
.root
.u
.def
.section
;
5780 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5781 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5782 eh
->elf
.root
.u
.def
.value
,
5783 &rsec
, NULL
) != (bfd_vma
) -1)
5784 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5786 rsec
= h
->root
.u
.def
.section
;
5789 case bfd_link_hash_common
:
5790 rsec
= h
->root
.u
.c
.p
->section
;
5794 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5800 struct _opd_sec_data
*opd
;
5802 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5803 opd
= get_opd_info (rsec
);
5804 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5808 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5815 /* Update the .got, .plt. and dynamic reloc reference counts for the
5816 section being removed. */
5819 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5820 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5822 struct ppc_link_hash_table
*htab
;
5823 Elf_Internal_Shdr
*symtab_hdr
;
5824 struct elf_link_hash_entry
**sym_hashes
;
5825 struct got_entry
**local_got_ents
;
5826 const Elf_Internal_Rela
*rel
, *relend
;
5828 if (info
->relocatable
)
5831 if ((sec
->flags
& SEC_ALLOC
) == 0)
5834 elf_section_data (sec
)->local_dynrel
= NULL
;
5836 htab
= ppc_hash_table (info
);
5840 symtab_hdr
= &elf_symtab_hdr (abfd
);
5841 sym_hashes
= elf_sym_hashes (abfd
);
5842 local_got_ents
= elf_local_got_ents (abfd
);
5844 relend
= relocs
+ sec
->reloc_count
;
5845 for (rel
= relocs
; rel
< relend
; rel
++)
5847 unsigned long r_symndx
;
5848 enum elf_ppc64_reloc_type r_type
;
5849 struct elf_link_hash_entry
*h
= NULL
;
5850 unsigned char tls_type
= 0;
5852 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5853 r_type
= ELF64_R_TYPE (rel
->r_info
);
5854 if (r_symndx
>= symtab_hdr
->sh_info
)
5856 struct ppc_link_hash_entry
*eh
;
5857 struct ppc_dyn_relocs
**pp
;
5858 struct ppc_dyn_relocs
*p
;
5860 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5861 h
= elf_follow_link (h
);
5862 eh
= (struct ppc_link_hash_entry
*) h
;
5864 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5867 /* Everything must go for SEC. */
5873 if (is_branch_reloc (r_type
))
5875 struct plt_entry
**ifunc
= NULL
;
5878 if (h
->type
== STT_GNU_IFUNC
)
5879 ifunc
= &h
->plt
.plist
;
5881 else if (local_got_ents
!= NULL
)
5883 struct plt_entry
**local_plt
= (struct plt_entry
**)
5884 (local_got_ents
+ symtab_hdr
->sh_info
);
5885 unsigned char *local_got_tls_masks
= (unsigned char *)
5886 (local_plt
+ symtab_hdr
->sh_info
);
5887 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5888 ifunc
= local_plt
+ r_symndx
;
5892 struct plt_entry
*ent
;
5894 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5895 if (ent
->addend
== rel
->r_addend
)
5899 if (ent
->plt
.refcount
> 0)
5900 ent
->plt
.refcount
-= 1;
5907 case R_PPC64_GOT_TLSLD16
:
5908 case R_PPC64_GOT_TLSLD16_LO
:
5909 case R_PPC64_GOT_TLSLD16_HI
:
5910 case R_PPC64_GOT_TLSLD16_HA
:
5911 tls_type
= TLS_TLS
| TLS_LD
;
5914 case R_PPC64_GOT_TLSGD16
:
5915 case R_PPC64_GOT_TLSGD16_LO
:
5916 case R_PPC64_GOT_TLSGD16_HI
:
5917 case R_PPC64_GOT_TLSGD16_HA
:
5918 tls_type
= TLS_TLS
| TLS_GD
;
5921 case R_PPC64_GOT_TPREL16_DS
:
5922 case R_PPC64_GOT_TPREL16_LO_DS
:
5923 case R_PPC64_GOT_TPREL16_HI
:
5924 case R_PPC64_GOT_TPREL16_HA
:
5925 tls_type
= TLS_TLS
| TLS_TPREL
;
5928 case R_PPC64_GOT_DTPREL16_DS
:
5929 case R_PPC64_GOT_DTPREL16_LO_DS
:
5930 case R_PPC64_GOT_DTPREL16_HI
:
5931 case R_PPC64_GOT_DTPREL16_HA
:
5932 tls_type
= TLS_TLS
| TLS_DTPREL
;
5936 case R_PPC64_GOT16_DS
:
5937 case R_PPC64_GOT16_HA
:
5938 case R_PPC64_GOT16_HI
:
5939 case R_PPC64_GOT16_LO
:
5940 case R_PPC64_GOT16_LO_DS
:
5943 struct got_entry
*ent
;
5948 ent
= local_got_ents
[r_symndx
];
5950 for (; ent
!= NULL
; ent
= ent
->next
)
5951 if (ent
->addend
== rel
->r_addend
5952 && ent
->owner
== abfd
5953 && ent
->tls_type
== tls_type
)
5957 if (ent
->got
.refcount
> 0)
5958 ent
->got
.refcount
-= 1;
5962 case R_PPC64_PLT16_HA
:
5963 case R_PPC64_PLT16_HI
:
5964 case R_PPC64_PLT16_LO
:
5968 case R_PPC64_REL14_BRNTAKEN
:
5969 case R_PPC64_REL14_BRTAKEN
:
5973 struct plt_entry
*ent
;
5975 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5976 if (ent
->addend
== rel
->r_addend
)
5978 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5979 ent
->plt
.refcount
-= 1;
5990 /* The maximum size of .sfpr. */
5991 #define SFPR_MAX (218*4)
5993 struct sfpr_def_parms
5995 const char name
[12];
5996 unsigned char lo
, hi
;
5997 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5998 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6001 /* Auto-generate _save*, _rest* functions in .sfpr. */
6004 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6006 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6008 size_t len
= strlen (parm
->name
);
6009 bfd_boolean writing
= FALSE
;
6015 memcpy (sym
, parm
->name
, len
);
6018 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6020 struct elf_link_hash_entry
*h
;
6022 sym
[len
+ 0] = i
/ 10 + '0';
6023 sym
[len
+ 1] = i
% 10 + '0';
6024 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6028 h
->root
.type
= bfd_link_hash_defined
;
6029 h
->root
.u
.def
.section
= htab
->sfpr
;
6030 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6033 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6035 if (htab
->sfpr
->contents
== NULL
)
6037 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6038 if (htab
->sfpr
->contents
== NULL
)
6044 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6046 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6048 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6049 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6057 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6059 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6064 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6066 p
= savegpr0 (abfd
, p
, r
);
6067 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6069 bfd_put_32 (abfd
, BLR
, p
);
6074 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6076 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6081 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6083 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6085 p
= restgpr0 (abfd
, p
, r
);
6086 bfd_put_32 (abfd
, MTLR_R0
, p
);
6090 p
= restgpr0 (abfd
, p
, 30);
6091 p
= restgpr0 (abfd
, p
, 31);
6093 bfd_put_32 (abfd
, BLR
, p
);
6098 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6100 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6105 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6107 p
= savegpr1 (abfd
, p
, r
);
6108 bfd_put_32 (abfd
, BLR
, p
);
6113 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6115 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6120 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6122 p
= restgpr1 (abfd
, p
, r
);
6123 bfd_put_32 (abfd
, BLR
, p
);
6128 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6130 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6135 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6137 p
= savefpr (abfd
, p
, r
);
6138 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6140 bfd_put_32 (abfd
, BLR
, p
);
6145 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6147 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6152 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6154 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6156 p
= restfpr (abfd
, p
, r
);
6157 bfd_put_32 (abfd
, MTLR_R0
, p
);
6161 p
= restfpr (abfd
, p
, 30);
6162 p
= restfpr (abfd
, p
, 31);
6164 bfd_put_32 (abfd
, BLR
, p
);
6169 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6171 p
= savefpr (abfd
, p
, r
);
6172 bfd_put_32 (abfd
, BLR
, p
);
6177 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6179 p
= restfpr (abfd
, p
, r
);
6180 bfd_put_32 (abfd
, BLR
, p
);
6185 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6187 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6189 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6194 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6196 p
= savevr (abfd
, p
, r
);
6197 bfd_put_32 (abfd
, BLR
, p
);
6202 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6204 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6206 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6211 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6213 p
= restvr (abfd
, p
, r
);
6214 bfd_put_32 (abfd
, BLR
, p
);
6218 /* Called via elf_link_hash_traverse to transfer dynamic linking
6219 information on function code symbol entries to their corresponding
6220 function descriptor symbol entries. */
6223 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6225 struct bfd_link_info
*info
;
6226 struct ppc_link_hash_table
*htab
;
6227 struct plt_entry
*ent
;
6228 struct ppc_link_hash_entry
*fh
;
6229 struct ppc_link_hash_entry
*fdh
;
6230 bfd_boolean force_local
;
6232 fh
= (struct ppc_link_hash_entry
*) h
;
6233 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6236 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6237 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6240 htab
= ppc_hash_table (info
);
6244 /* Resolve undefined references to dot-symbols as the value
6245 in the function descriptor, if we have one in a regular object.
6246 This is to satisfy cases like ".quad .foo". Calls to functions
6247 in dynamic objects are handled elsewhere. */
6248 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6249 && fh
->was_undefined
6250 && (fdh
= defined_func_desc (fh
)) != NULL
6251 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6252 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6253 fdh
->elf
.root
.u
.def
.value
,
6254 &fh
->elf
.root
.u
.def
.section
,
6255 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6257 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6258 fh
->elf
.forced_local
= 1;
6259 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6260 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6263 /* If this is a function code symbol, transfer dynamic linking
6264 information to the function descriptor symbol. */
6268 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6269 if (ent
->plt
.refcount
> 0)
6272 || fh
->elf
.root
.root
.string
[0] != '.'
6273 || fh
->elf
.root
.root
.string
[1] == '\0')
6276 /* Find the corresponding function descriptor symbol. Create it
6277 as undefined if necessary. */
6279 fdh
= lookup_fdh (fh
, htab
);
6281 && !info
->executable
6282 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6283 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6285 fdh
= make_fdh (info
, fh
);
6290 /* Fake function descriptors are made undefweak. If the function
6291 code symbol is strong undefined, make the fake sym the same.
6292 If the function code symbol is defined, then force the fake
6293 descriptor local; We can't support overriding of symbols in a
6294 shared library on a fake descriptor. */
6298 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6300 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6302 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6303 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6305 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6306 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6308 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6313 && !fdh
->elf
.forced_local
6314 && (!info
->executable
6315 || fdh
->elf
.def_dynamic
6316 || fdh
->elf
.ref_dynamic
6317 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6318 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6320 if (fdh
->elf
.dynindx
== -1)
6321 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6323 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6324 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6325 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6326 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6327 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6329 move_plt_plist (fh
, fdh
);
6330 fdh
->elf
.needs_plt
= 1;
6332 fdh
->is_func_descriptor
= 1;
6337 /* Now that the info is on the function descriptor, clear the
6338 function code sym info. Any function code syms for which we
6339 don't have a definition in a regular file, we force local.
6340 This prevents a shared library from exporting syms that have
6341 been imported from another library. Function code syms that
6342 are really in the library we must leave global to prevent the
6343 linker dragging in a definition from a static library. */
6344 force_local
= (!fh
->elf
.def_regular
6346 || !fdh
->elf
.def_regular
6347 || fdh
->elf
.forced_local
);
6348 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6353 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6354 this hook to a) provide some gcc support functions, and b) transfer
6355 dynamic linking information gathered so far on function code symbol
6356 entries, to their corresponding function descriptor symbol entries. */
6359 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6360 struct bfd_link_info
*info
)
6362 struct ppc_link_hash_table
*htab
;
6364 const struct sfpr_def_parms funcs
[] =
6366 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6367 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6368 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6369 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6370 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6371 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6372 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6373 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6374 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6375 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6376 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6377 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6380 htab
= ppc_hash_table (info
);
6384 if (htab
->sfpr
== NULL
)
6385 /* We don't have any relocs. */
6388 /* Provide any missing _save* and _rest* functions. */
6389 htab
->sfpr
->size
= 0;
6390 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6391 if (!sfpr_define (info
, &funcs
[i
]))
6394 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6396 if (htab
->sfpr
->size
== 0)
6397 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6402 /* Adjust a symbol defined by a dynamic object and referenced by a
6403 regular object. The current definition is in some section of the
6404 dynamic object, but we're not including those sections. We have to
6405 change the definition to something the rest of the link can
6409 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6410 struct elf_link_hash_entry
*h
)
6412 struct ppc_link_hash_table
*htab
;
6415 htab
= ppc_hash_table (info
);
6419 /* Deal with function syms. */
6420 if (h
->type
== STT_FUNC
6421 || h
->type
== STT_GNU_IFUNC
6424 /* Clear procedure linkage table information for any symbol that
6425 won't need a .plt entry. */
6426 struct plt_entry
*ent
;
6427 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6428 if (ent
->plt
.refcount
> 0)
6431 || (h
->type
!= STT_GNU_IFUNC
6432 && (SYMBOL_CALLS_LOCAL (info
, h
)
6433 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6434 && h
->root
.type
== bfd_link_hash_undefweak
))))
6436 h
->plt
.plist
= NULL
;
6441 h
->plt
.plist
= NULL
;
6443 /* If this is a weak symbol, and there is a real definition, the
6444 processor independent code will have arranged for us to see the
6445 real definition first, and we can just use the same value. */
6446 if (h
->u
.weakdef
!= NULL
)
6448 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6449 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6450 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6451 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6452 if (ELIMINATE_COPY_RELOCS
)
6453 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6457 /* If we are creating a shared library, we must presume that the
6458 only references to the symbol are via the global offset table.
6459 For such cases we need not do anything here; the relocations will
6460 be handled correctly by relocate_section. */
6464 /* If there are no references to this symbol that do not use the
6465 GOT, we don't need to generate a copy reloc. */
6466 if (!h
->non_got_ref
)
6469 /* Don't generate a copy reloc for symbols defined in the executable. */
6470 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6473 if (ELIMINATE_COPY_RELOCS
)
6475 struct ppc_link_hash_entry
* eh
;
6476 struct ppc_dyn_relocs
*p
;
6478 eh
= (struct ppc_link_hash_entry
*) h
;
6479 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6481 s
= p
->sec
->output_section
;
6482 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6486 /* If we didn't find any dynamic relocs in read-only sections, then
6487 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6495 if (h
->plt
.plist
!= NULL
)
6497 /* We should never get here, but unfortunately there are versions
6498 of gcc out there that improperly (for this ABI) put initialized
6499 function pointers, vtable refs and suchlike in read-only
6500 sections. Allow them to proceed, but warn that this might
6501 break at runtime. */
6502 (*_bfd_error_handler
)
6503 (_("copy reloc against `%s' requires lazy plt linking; "
6504 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6505 h
->root
.root
.string
);
6508 /* This is a reference to a symbol defined by a dynamic object which
6509 is not a function. */
6513 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6514 h
->root
.root
.string
);
6518 /* We must allocate the symbol in our .dynbss section, which will
6519 become part of the .bss section of the executable. There will be
6520 an entry for this symbol in the .dynsym section. The dynamic
6521 object will contain position independent code, so all references
6522 from the dynamic object to this symbol will go through the global
6523 offset table. The dynamic linker will use the .dynsym entry to
6524 determine the address it must put in the global offset table, so
6525 both the dynamic object and the regular object will refer to the
6526 same memory location for the variable. */
6528 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6529 to copy the initial value out of the dynamic object and into the
6530 runtime process image. We need to remember the offset into the
6531 .rela.bss section we are going to use. */
6532 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6534 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6540 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6543 /* If given a function descriptor symbol, hide both the function code
6544 sym and the descriptor. */
6546 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6547 struct elf_link_hash_entry
*h
,
6548 bfd_boolean force_local
)
6550 struct ppc_link_hash_entry
*eh
;
6551 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6553 eh
= (struct ppc_link_hash_entry
*) h
;
6554 if (eh
->is_func_descriptor
)
6556 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6561 struct ppc_link_hash_table
*htab
;
6564 /* We aren't supposed to use alloca in BFD because on
6565 systems which do not have alloca the version in libiberty
6566 calls xmalloc, which might cause the program to crash
6567 when it runs out of memory. This function doesn't have a
6568 return status, so there's no way to gracefully return an
6569 error. So cheat. We know that string[-1] can be safely
6570 accessed; It's either a string in an ELF string table,
6571 or allocated in an objalloc structure. */
6573 p
= eh
->elf
.root
.root
.string
- 1;
6576 htab
= ppc_hash_table (info
);
6580 fh
= (struct ppc_link_hash_entry
*)
6581 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6584 /* Unfortunately, if it so happens that the string we were
6585 looking for was allocated immediately before this string,
6586 then we overwrote the string terminator. That's the only
6587 reason the lookup should fail. */
6590 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6591 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6593 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6594 fh
= (struct ppc_link_hash_entry
*)
6595 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6604 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6609 get_sym_h (struct elf_link_hash_entry
**hp
,
6610 Elf_Internal_Sym
**symp
,
6612 unsigned char **tls_maskp
,
6613 Elf_Internal_Sym
**locsymsp
,
6614 unsigned long r_symndx
,
6617 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6619 if (r_symndx
>= symtab_hdr
->sh_info
)
6621 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6622 struct elf_link_hash_entry
*h
;
6624 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6625 h
= elf_follow_link (h
);
6633 if (symsecp
!= NULL
)
6635 asection
*symsec
= NULL
;
6636 if (h
->root
.type
== bfd_link_hash_defined
6637 || h
->root
.type
== bfd_link_hash_defweak
)
6638 symsec
= h
->root
.u
.def
.section
;
6642 if (tls_maskp
!= NULL
)
6644 struct ppc_link_hash_entry
*eh
;
6646 eh
= (struct ppc_link_hash_entry
*) h
;
6647 *tls_maskp
= &eh
->tls_mask
;
6652 Elf_Internal_Sym
*sym
;
6653 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6655 if (locsyms
== NULL
)
6657 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6658 if (locsyms
== NULL
)
6659 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6660 symtab_hdr
->sh_info
,
6661 0, NULL
, NULL
, NULL
);
6662 if (locsyms
== NULL
)
6664 *locsymsp
= locsyms
;
6666 sym
= locsyms
+ r_symndx
;
6674 if (symsecp
!= NULL
)
6675 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6677 if (tls_maskp
!= NULL
)
6679 struct got_entry
**lgot_ents
;
6680 unsigned char *tls_mask
;
6683 lgot_ents
= elf_local_got_ents (ibfd
);
6684 if (lgot_ents
!= NULL
)
6686 struct plt_entry
**local_plt
= (struct plt_entry
**)
6687 (lgot_ents
+ symtab_hdr
->sh_info
);
6688 unsigned char *lgot_masks
= (unsigned char *)
6689 (local_plt
+ symtab_hdr
->sh_info
);
6690 tls_mask
= &lgot_masks
[r_symndx
];
6692 *tls_maskp
= tls_mask
;
6698 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6699 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6700 type suitable for optimization, and 1 otherwise. */
6703 get_tls_mask (unsigned char **tls_maskp
,
6704 unsigned long *toc_symndx
,
6705 bfd_vma
*toc_addend
,
6706 Elf_Internal_Sym
**locsymsp
,
6707 const Elf_Internal_Rela
*rel
,
6710 unsigned long r_symndx
;
6712 struct elf_link_hash_entry
*h
;
6713 Elf_Internal_Sym
*sym
;
6717 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6718 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6721 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6723 || ppc64_elf_section_data (sec
) == NULL
6724 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6727 /* Look inside a TOC section too. */
6730 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6731 off
= h
->root
.u
.def
.value
;
6734 off
= sym
->st_value
;
6735 off
+= rel
->r_addend
;
6736 BFD_ASSERT (off
% 8 == 0);
6737 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6738 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6739 if (toc_symndx
!= NULL
)
6740 *toc_symndx
= r_symndx
;
6741 if (toc_addend
!= NULL
)
6742 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6743 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6745 if ((h
== NULL
|| is_static_defined (h
))
6746 && (next_r
== -1 || next_r
== -2))
6751 /* Adjust all global syms defined in opd sections. In gcc generated
6752 code for the old ABI, these will already have been done. */
6755 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6757 struct ppc_link_hash_entry
*eh
;
6759 struct _opd_sec_data
*opd
;
6761 if (h
->root
.type
== bfd_link_hash_indirect
)
6764 if (h
->root
.type
== bfd_link_hash_warning
)
6765 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6767 if (h
->root
.type
!= bfd_link_hash_defined
6768 && h
->root
.type
!= bfd_link_hash_defweak
)
6771 eh
= (struct ppc_link_hash_entry
*) h
;
6772 if (eh
->adjust_done
)
6775 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6776 opd
= get_opd_info (sym_sec
);
6777 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6779 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6782 /* This entry has been deleted. */
6783 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6786 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6787 if (elf_discarded_section (dsec
))
6789 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6793 eh
->elf
.root
.u
.def
.value
= 0;
6794 eh
->elf
.root
.u
.def
.section
= dsec
;
6797 eh
->elf
.root
.u
.def
.value
+= adjust
;
6798 eh
->adjust_done
= 1;
6803 /* Handles decrementing dynamic reloc counts for the reloc specified by
6804 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6805 have already been determined. */
6808 dec_dynrel_count (bfd_vma r_info
,
6810 struct bfd_link_info
*info
,
6811 Elf_Internal_Sym
**local_syms
,
6812 struct elf_link_hash_entry
*h
,
6815 enum elf_ppc64_reloc_type r_type
;
6816 struct ppc_dyn_relocs
*p
;
6817 struct ppc_dyn_relocs
**pp
;
6819 /* Can this reloc be dynamic? This switch, and later tests here
6820 should be kept in sync with the code in check_relocs. */
6821 r_type
= ELF64_R_TYPE (r_info
);
6827 case R_PPC64_TPREL16
:
6828 case R_PPC64_TPREL16_LO
:
6829 case R_PPC64_TPREL16_HI
:
6830 case R_PPC64_TPREL16_HA
:
6831 case R_PPC64_TPREL16_DS
:
6832 case R_PPC64_TPREL16_LO_DS
:
6833 case R_PPC64_TPREL16_HIGHER
:
6834 case R_PPC64_TPREL16_HIGHERA
:
6835 case R_PPC64_TPREL16_HIGHEST
:
6836 case R_PPC64_TPREL16_HIGHESTA
:
6840 case R_PPC64_TPREL64
:
6841 case R_PPC64_DTPMOD64
:
6842 case R_PPC64_DTPREL64
:
6843 case R_PPC64_ADDR64
:
6847 case R_PPC64_ADDR14
:
6848 case R_PPC64_ADDR14_BRNTAKEN
:
6849 case R_PPC64_ADDR14_BRTAKEN
:
6850 case R_PPC64_ADDR16
:
6851 case R_PPC64_ADDR16_DS
:
6852 case R_PPC64_ADDR16_HA
:
6853 case R_PPC64_ADDR16_HI
:
6854 case R_PPC64_ADDR16_HIGHER
:
6855 case R_PPC64_ADDR16_HIGHERA
:
6856 case R_PPC64_ADDR16_HIGHEST
:
6857 case R_PPC64_ADDR16_HIGHESTA
:
6858 case R_PPC64_ADDR16_LO
:
6859 case R_PPC64_ADDR16_LO_DS
:
6860 case R_PPC64_ADDR24
:
6861 case R_PPC64_ADDR32
:
6862 case R_PPC64_UADDR16
:
6863 case R_PPC64_UADDR32
:
6864 case R_PPC64_UADDR64
:
6869 if (local_syms
!= NULL
)
6871 unsigned long r_symndx
;
6872 Elf_Internal_Sym
*sym
;
6873 bfd
*ibfd
= sec
->owner
;
6875 r_symndx
= ELF64_R_SYM (r_info
);
6876 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6881 && (must_be_dyn_reloc (info
, r_type
)
6884 || h
->root
.type
== bfd_link_hash_defweak
6885 || !h
->def_regular
))))
6886 || (ELIMINATE_COPY_RELOCS
6889 && (h
->root
.type
== bfd_link_hash_defweak
6890 || !h
->def_regular
)))
6896 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6899 if (sym_sec
!= NULL
)
6901 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6902 pp
= (struct ppc_dyn_relocs
**) vpp
;
6906 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6907 pp
= (struct ppc_dyn_relocs
**) vpp
;
6910 /* elf_gc_sweep may have already removed all dyn relocs associated
6911 with local syms for a given section. Don't report a dynreloc
6917 while ((p
= *pp
) != NULL
)
6921 if (!must_be_dyn_reloc (info
, r_type
))
6931 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6933 bfd_set_error (bfd_error_bad_value
);
6937 /* Remove unused Official Procedure Descriptor entries. Currently we
6938 only remove those associated with functions in discarded link-once
6939 sections, or weakly defined functions that have been overridden. It
6940 would be possible to remove many more entries for statically linked
6944 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6947 bfd_boolean some_edited
= FALSE
;
6948 asection
*need_pad
= NULL
;
6950 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6953 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6954 Elf_Internal_Shdr
*symtab_hdr
;
6955 Elf_Internal_Sym
*local_syms
;
6957 struct _opd_sec_data
*opd
;
6958 bfd_boolean need_edit
, add_aux_fields
;
6959 bfd_size_type cnt_16b
= 0;
6961 if (!is_ppc64_elf (ibfd
))
6964 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6965 if (sec
== NULL
|| sec
->size
== 0)
6968 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6971 if (sec
->output_section
== bfd_abs_section_ptr
)
6974 /* Look through the section relocs. */
6975 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6979 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6981 /* Read the relocations. */
6982 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6984 if (relstart
== NULL
)
6987 /* First run through the relocs to check they are sane, and to
6988 determine whether we need to edit this opd section. */
6992 relend
= relstart
+ sec
->reloc_count
;
6993 for (rel
= relstart
; rel
< relend
; )
6995 enum elf_ppc64_reloc_type r_type
;
6996 unsigned long r_symndx
;
6998 struct elf_link_hash_entry
*h
;
6999 Elf_Internal_Sym
*sym
;
7001 /* .opd contains a regular array of 16 or 24 byte entries. We're
7002 only interested in the reloc pointing to a function entry
7004 if (rel
->r_offset
!= offset
7005 || rel
+ 1 >= relend
7006 || (rel
+ 1)->r_offset
!= offset
+ 8)
7008 /* If someone messes with .opd alignment then after a
7009 "ld -r" we might have padding in the middle of .opd.
7010 Also, there's nothing to prevent someone putting
7011 something silly in .opd with the assembler. No .opd
7012 optimization for them! */
7014 (*_bfd_error_handler
)
7015 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7020 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7021 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7023 (*_bfd_error_handler
)
7024 (_("%B: unexpected reloc type %u in .opd section"),
7030 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7031 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7035 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7037 const char *sym_name
;
7039 sym_name
= h
->root
.root
.string
;
7041 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7044 (*_bfd_error_handler
)
7045 (_("%B: undefined sym `%s' in .opd section"),
7051 /* opd entries are always for functions defined in the
7052 current input bfd. If the symbol isn't defined in the
7053 input bfd, then we won't be using the function in this
7054 bfd; It must be defined in a linkonce section in another
7055 bfd, or is weak. It's also possible that we are
7056 discarding the function due to a linker script /DISCARD/,
7057 which we test for via the output_section. */
7058 if (sym_sec
->owner
!= ibfd
7059 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7064 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7066 if (sec
->size
== offset
+ 24)
7071 if (rel
== relend
&& sec
->size
== offset
+ 16)
7079 if (rel
->r_offset
== offset
+ 24)
7081 else if (rel
->r_offset
!= offset
+ 16)
7083 else if (rel
+ 1 < relend
7084 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7085 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7090 else if (rel
+ 2 < relend
7091 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7092 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7101 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7103 if (need_edit
|| add_aux_fields
)
7105 Elf_Internal_Rela
*write_rel
;
7106 Elf_Internal_Shdr
*rel_hdr
;
7107 bfd_byte
*rptr
, *wptr
;
7108 bfd_byte
*new_contents
;
7113 new_contents
= NULL
;
7114 amt
= sec
->size
* sizeof (long) / 8;
7115 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7116 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7117 if (opd
->adjust
== NULL
)
7119 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7121 /* This seems a waste of time as input .opd sections are all
7122 zeros as generated by gcc, but I suppose there's no reason
7123 this will always be so. We might start putting something in
7124 the third word of .opd entries. */
7125 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7128 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7133 if (local_syms
!= NULL
7134 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7136 if (elf_section_data (sec
)->relocs
!= relstart
)
7140 sec
->contents
= loc
;
7141 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7144 elf_section_data (sec
)->relocs
= relstart
;
7146 new_contents
= sec
->contents
;
7149 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7150 if (new_contents
== NULL
)
7154 wptr
= new_contents
;
7155 rptr
= sec
->contents
;
7157 write_rel
= relstart
;
7161 for (rel
= relstart
; rel
< relend
; rel
++)
7163 unsigned long r_symndx
;
7165 struct elf_link_hash_entry
*h
;
7166 Elf_Internal_Sym
*sym
;
7168 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7169 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7173 if (rel
->r_offset
== offset
)
7175 struct ppc_link_hash_entry
*fdh
= NULL
;
7177 /* See if the .opd entry is full 24 byte or
7178 16 byte (with fd_aux entry overlapped with next
7181 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7182 || (rel
+ 3 < relend
7183 && rel
[2].r_offset
== offset
+ 16
7184 && rel
[3].r_offset
== offset
+ 24
7185 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7186 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7190 && h
->root
.root
.string
[0] == '.')
7192 struct ppc_link_hash_table
*htab
;
7194 htab
= ppc_hash_table (info
);
7196 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7199 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7200 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7204 skip
= (sym_sec
->owner
!= ibfd
7205 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7208 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7210 /* Arrange for the function descriptor sym
7212 fdh
->elf
.root
.u
.def
.value
= 0;
7213 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7215 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7219 /* We'll be keeping this opd entry. */
7223 /* Redefine the function descriptor symbol to
7224 this location in the opd section. It is
7225 necessary to update the value here rather
7226 than using an array of adjustments as we do
7227 for local symbols, because various places
7228 in the generic ELF code use the value
7229 stored in u.def.value. */
7230 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7231 fdh
->adjust_done
= 1;
7234 /* Local syms are a bit tricky. We could
7235 tweak them as they can be cached, but
7236 we'd need to look through the local syms
7237 for the function descriptor sym which we
7238 don't have at the moment. So keep an
7239 array of adjustments. */
7240 opd
->adjust
[rel
->r_offset
/ 8]
7241 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7244 memcpy (wptr
, rptr
, opd_ent_size
);
7245 wptr
+= opd_ent_size
;
7246 if (add_aux_fields
&& opd_ent_size
== 16)
7248 memset (wptr
, '\0', 8);
7252 rptr
+= opd_ent_size
;
7253 offset
+= opd_ent_size
;
7259 && !info
->relocatable
7260 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7266 /* We need to adjust any reloc offsets to point to the
7267 new opd entries. While we're at it, we may as well
7268 remove redundant relocs. */
7269 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7270 if (write_rel
!= rel
)
7271 memcpy (write_rel
, rel
, sizeof (*rel
));
7276 sec
->size
= wptr
- new_contents
;
7277 sec
->reloc_count
= write_rel
- relstart
;
7280 free (sec
->contents
);
7281 sec
->contents
= new_contents
;
7284 /* Fudge the header size too, as this is used later in
7285 elf_bfd_final_link if we are emitting relocs. */
7286 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7287 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7290 else if (elf_section_data (sec
)->relocs
!= relstart
)
7293 if (local_syms
!= NULL
7294 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7296 if (!info
->keep_memory
)
7299 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7304 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7306 /* If we are doing a final link and the last .opd entry is just 16 byte
7307 long, add a 8 byte padding after it. */
7308 if (need_pad
!= NULL
&& !info
->relocatable
)
7312 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7314 BFD_ASSERT (need_pad
->size
> 0);
7316 p
= bfd_malloc (need_pad
->size
+ 8);
7320 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7321 p
, 0, need_pad
->size
))
7324 need_pad
->contents
= p
;
7325 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7329 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7333 need_pad
->contents
= p
;
7336 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7337 need_pad
->size
+= 8;
7343 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7346 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7347 int no_tls_get_addr_opt
,
7350 struct ppc_link_hash_table
*htab
;
7352 htab
= ppc_hash_table (info
);
7357 htab
->do_multi_toc
= 0;
7358 else if (!htab
->do_multi_toc
)
7361 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7362 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7363 FALSE
, FALSE
, TRUE
));
7364 /* Move dynamic linking info to the function descriptor sym. */
7365 if (htab
->tls_get_addr
!= NULL
)
7366 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7367 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7368 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7369 FALSE
, FALSE
, TRUE
));
7370 if (!no_tls_get_addr_opt
)
7372 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7374 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7375 FALSE
, FALSE
, TRUE
);
7377 func_desc_adjust (opt
, info
);
7378 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7379 FALSE
, FALSE
, TRUE
);
7381 && (opt_fd
->root
.type
== bfd_link_hash_defined
7382 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7384 /* If glibc supports an optimized __tls_get_addr call stub,
7385 signalled by the presence of __tls_get_addr_opt, and we'll
7386 be calling __tls_get_addr via a plt call stub, then
7387 make __tls_get_addr point to __tls_get_addr_opt. */
7388 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7389 if (htab
->elf
.dynamic_sections_created
7391 && (tga_fd
->type
== STT_FUNC
7392 || tga_fd
->needs_plt
)
7393 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7394 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7395 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7397 struct plt_entry
*ent
;
7399 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7400 if (ent
->plt
.refcount
> 0)
7404 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7405 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7406 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7407 if (opt_fd
->dynindx
!= -1)
7409 /* Use __tls_get_addr_opt in dynamic relocations. */
7410 opt_fd
->dynindx
= -1;
7411 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7412 opt_fd
->dynstr_index
);
7413 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7416 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7417 tga
= &htab
->tls_get_addr
->elf
;
7418 if (opt
!= NULL
&& tga
!= NULL
)
7420 tga
->root
.type
= bfd_link_hash_indirect
;
7421 tga
->root
.u
.i
.link
= &opt
->root
;
7422 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7423 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7425 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7427 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7428 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7429 if (htab
->tls_get_addr
!= NULL
)
7431 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7432 htab
->tls_get_addr
->is_func
= 1;
7438 no_tls_get_addr_opt
= TRUE
;
7440 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7441 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7444 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7448 branch_reloc_hash_match (const bfd
*ibfd
,
7449 const Elf_Internal_Rela
*rel
,
7450 const struct ppc_link_hash_entry
*hash1
,
7451 const struct ppc_link_hash_entry
*hash2
)
7453 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7454 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7455 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7457 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7459 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7460 struct elf_link_hash_entry
*h
;
7462 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7463 h
= elf_follow_link (h
);
7464 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7470 /* Run through all the TLS relocs looking for optimization
7471 opportunities. The linker has been hacked (see ppc64elf.em) to do
7472 a preliminary section layout so that we know the TLS segment
7473 offsets. We can't optimize earlier because some optimizations need
7474 to know the tp offset, and we need to optimize before allocating
7475 dynamic relocations. */
7478 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7482 struct ppc_link_hash_table
*htab
;
7483 unsigned char *toc_ref
;
7486 if (info
->relocatable
|| !info
->executable
)
7489 htab
= ppc_hash_table (info
);
7493 /* Make two passes over the relocs. On the first pass, mark toc
7494 entries involved with tls relocs, and check that tls relocs
7495 involved in setting up a tls_get_addr call are indeed followed by
7496 such a call. If they are not, we can't do any tls optimization.
7497 On the second pass twiddle tls_mask flags to notify
7498 relocate_section that optimization can be done, and adjust got
7499 and plt refcounts. */
7501 for (pass
= 0; pass
< 2; ++pass
)
7502 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7504 Elf_Internal_Sym
*locsyms
= NULL
;
7505 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7507 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7508 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7510 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7511 bfd_boolean found_tls_get_addr_arg
= 0;
7513 /* Read the relocations. */
7514 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7516 if (relstart
== NULL
)
7519 relend
= relstart
+ sec
->reloc_count
;
7520 for (rel
= relstart
; rel
< relend
; rel
++)
7522 enum elf_ppc64_reloc_type r_type
;
7523 unsigned long r_symndx
;
7524 struct elf_link_hash_entry
*h
;
7525 Elf_Internal_Sym
*sym
;
7527 unsigned char *tls_mask
;
7528 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7530 bfd_boolean ok_tprel
, is_local
;
7531 long toc_ref_index
= 0;
7532 int expecting_tls_get_addr
= 0;
7533 bfd_boolean ret
= FALSE
;
7535 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7536 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7540 if (elf_section_data (sec
)->relocs
!= relstart
)
7542 if (toc_ref
!= NULL
)
7545 && (elf_symtab_hdr (ibfd
).contents
7546 != (unsigned char *) locsyms
))
7553 if (h
->root
.type
== bfd_link_hash_defined
7554 || h
->root
.type
== bfd_link_hash_defweak
)
7555 value
= h
->root
.u
.def
.value
;
7556 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7560 found_tls_get_addr_arg
= 0;
7565 /* Symbols referenced by TLS relocs must be of type
7566 STT_TLS. So no need for .opd local sym adjust. */
7567 value
= sym
->st_value
;
7576 && h
->root
.type
== bfd_link_hash_undefweak
)
7580 value
+= sym_sec
->output_offset
;
7581 value
+= sym_sec
->output_section
->vma
;
7582 value
-= htab
->elf
.tls_sec
->vma
;
7583 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7584 < (bfd_vma
) 1 << 32);
7588 r_type
= ELF64_R_TYPE (rel
->r_info
);
7589 /* If this section has old-style __tls_get_addr calls
7590 without marker relocs, then check that each
7591 __tls_get_addr call reloc is preceded by a reloc
7592 that conceivably belongs to the __tls_get_addr arg
7593 setup insn. If we don't find matching arg setup
7594 relocs, don't do any tls optimization. */
7596 && sec
->has_tls_get_addr_call
7598 && (h
== &htab
->tls_get_addr
->elf
7599 || h
== &htab
->tls_get_addr_fd
->elf
)
7600 && !found_tls_get_addr_arg
7601 && is_branch_reloc (r_type
))
7603 info
->callbacks
->minfo (_("%C __tls_get_addr lost arg, "
7604 "TLS optimization disabled\n"),
7605 ibfd
, sec
, rel
->r_offset
);
7610 found_tls_get_addr_arg
= 0;
7613 case R_PPC64_GOT_TLSLD16
:
7614 case R_PPC64_GOT_TLSLD16_LO
:
7615 expecting_tls_get_addr
= 1;
7616 found_tls_get_addr_arg
= 1;
7619 case R_PPC64_GOT_TLSLD16_HI
:
7620 case R_PPC64_GOT_TLSLD16_HA
:
7621 /* These relocs should never be against a symbol
7622 defined in a shared lib. Leave them alone if
7623 that turns out to be the case. */
7630 tls_type
= TLS_TLS
| TLS_LD
;
7633 case R_PPC64_GOT_TLSGD16
:
7634 case R_PPC64_GOT_TLSGD16_LO
:
7635 expecting_tls_get_addr
= 1;
7636 found_tls_get_addr_arg
= 1;
7639 case R_PPC64_GOT_TLSGD16_HI
:
7640 case R_PPC64_GOT_TLSGD16_HA
:
7646 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7648 tls_type
= TLS_TLS
| TLS_GD
;
7651 case R_PPC64_GOT_TPREL16_DS
:
7652 case R_PPC64_GOT_TPREL16_LO_DS
:
7653 case R_PPC64_GOT_TPREL16_HI
:
7654 case R_PPC64_GOT_TPREL16_HA
:
7659 tls_clear
= TLS_TPREL
;
7660 tls_type
= TLS_TLS
| TLS_TPREL
;
7667 found_tls_get_addr_arg
= 1;
7672 case R_PPC64_TOC16_LO
:
7673 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7676 /* Mark this toc entry as referenced by a TLS
7677 code sequence. We can do that now in the
7678 case of R_PPC64_TLS, and after checking for
7679 tls_get_addr for the TOC16 relocs. */
7680 if (toc_ref
== NULL
)
7681 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7682 if (toc_ref
== NULL
)
7686 value
= h
->root
.u
.def
.value
;
7688 value
= sym
->st_value
;
7689 value
+= rel
->r_addend
;
7690 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7691 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7692 if (r_type
== R_PPC64_TLS
7693 || r_type
== R_PPC64_TLSGD
7694 || r_type
== R_PPC64_TLSLD
)
7696 toc_ref
[toc_ref_index
] = 1;
7700 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7705 expecting_tls_get_addr
= 2;
7708 case R_PPC64_TPREL64
:
7712 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7717 tls_set
= TLS_EXPLICIT
;
7718 tls_clear
= TLS_TPREL
;
7723 case R_PPC64_DTPMOD64
:
7727 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7729 if (rel
+ 1 < relend
7731 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7732 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7736 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7739 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7748 tls_set
= TLS_EXPLICIT
;
7759 if (!expecting_tls_get_addr
7760 || !sec
->has_tls_get_addr_call
)
7763 if (rel
+ 1 < relend
7764 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7766 htab
->tls_get_addr_fd
))
7768 if (expecting_tls_get_addr
== 2)
7770 /* Check for toc tls entries. */
7771 unsigned char *toc_tls
;
7774 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7779 if (toc_tls
!= NULL
)
7781 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
7782 found_tls_get_addr_arg
= 1;
7784 toc_ref
[toc_ref_index
] = 1;
7790 if (expecting_tls_get_addr
!= 1)
7793 /* Uh oh, we didn't find the expected call. We
7794 could just mark this symbol to exclude it
7795 from tls optimization but it's safer to skip
7796 the entire optimization. */
7797 info
->callbacks
->minfo (_("%C arg lost __tls_get_addr, "
7798 "TLS optimization disabled\n"),
7799 ibfd
, sec
, rel
->r_offset
);
7804 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7806 struct plt_entry
*ent
;
7807 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7810 if (ent
->addend
== 0)
7812 if (ent
->plt
.refcount
> 0)
7814 ent
->plt
.refcount
-= 1;
7815 expecting_tls_get_addr
= 0;
7821 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7823 struct plt_entry
*ent
;
7824 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7827 if (ent
->addend
== 0)
7829 if (ent
->plt
.refcount
> 0)
7830 ent
->plt
.refcount
-= 1;
7838 if ((tls_set
& TLS_EXPLICIT
) == 0)
7840 struct got_entry
*ent
;
7842 /* Adjust got entry for this reloc. */
7846 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7848 for (; ent
!= NULL
; ent
= ent
->next
)
7849 if (ent
->addend
== rel
->r_addend
7850 && ent
->owner
== ibfd
7851 && ent
->tls_type
== tls_type
)
7858 /* We managed to get rid of a got entry. */
7859 if (ent
->got
.refcount
> 0)
7860 ent
->got
.refcount
-= 1;
7865 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7866 we'll lose one or two dyn relocs. */
7867 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7871 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7873 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7879 *tls_mask
|= tls_set
;
7880 *tls_mask
&= ~tls_clear
;
7883 if (elf_section_data (sec
)->relocs
!= relstart
)
7888 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7890 if (!info
->keep_memory
)
7893 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7897 if (toc_ref
!= NULL
)
7902 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7903 the values of any global symbols in a toc section that has been
7904 edited. Globals in toc sections should be a rarity, so this function
7905 sets a flag if any are found in toc sections other than the one just
7906 edited, so that futher hash table traversals can be avoided. */
7908 struct adjust_toc_info
7911 unsigned long *skip
;
7912 bfd_boolean global_toc_syms
;
7915 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7918 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7920 struct ppc_link_hash_entry
*eh
;
7921 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7924 if (h
->root
.type
== bfd_link_hash_indirect
)
7927 if (h
->root
.type
== bfd_link_hash_warning
)
7928 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7930 if (h
->root
.type
!= bfd_link_hash_defined
7931 && h
->root
.type
!= bfd_link_hash_defweak
)
7934 eh
= (struct ppc_link_hash_entry
*) h
;
7935 if (eh
->adjust_done
)
7938 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7940 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7941 i
= toc_inf
->toc
->rawsize
>> 3;
7943 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7945 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
7947 (*_bfd_error_handler
)
7948 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7951 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
7952 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7955 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7956 eh
->adjust_done
= 1;
7958 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7959 toc_inf
->global_toc_syms
= TRUE
;
7964 /* Examine all relocs referencing .toc sections in order to remove
7965 unused .toc entries. */
7968 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7971 struct adjust_toc_info toc_inf
;
7972 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7974 htab
->do_toc_opt
= 1;
7975 toc_inf
.global_toc_syms
= TRUE
;
7976 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7978 asection
*toc
, *sec
;
7979 Elf_Internal_Shdr
*symtab_hdr
;
7980 Elf_Internal_Sym
*local_syms
;
7981 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
7982 unsigned long *skip
, *drop
;
7983 unsigned char *used
;
7984 unsigned char *keep
, last
, some_unused
;
7986 if (!is_ppc64_elf (ibfd
))
7989 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7992 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7993 || elf_discarded_section (toc
))
7998 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8000 /* Look at sections dropped from the final link. */
8003 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8005 if (sec
->reloc_count
== 0
8006 || !elf_discarded_section (sec
)
8007 || get_opd_info (sec
)
8008 || (sec
->flags
& SEC_ALLOC
) == 0
8009 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8012 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8013 if (relstart
== NULL
)
8016 /* Run through the relocs to see which toc entries might be
8018 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8020 enum elf_ppc64_reloc_type r_type
;
8021 unsigned long r_symndx
;
8023 struct elf_link_hash_entry
*h
;
8024 Elf_Internal_Sym
*sym
;
8027 r_type
= ELF64_R_TYPE (rel
->r_info
);
8034 case R_PPC64_TOC16_LO
:
8035 case R_PPC64_TOC16_HI
:
8036 case R_PPC64_TOC16_HA
:
8037 case R_PPC64_TOC16_DS
:
8038 case R_PPC64_TOC16_LO_DS
:
8042 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8043 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8051 val
= h
->root
.u
.def
.value
;
8053 val
= sym
->st_value
;
8054 val
+= rel
->r_addend
;
8056 if (val
>= toc
->size
)
8059 /* Anything in the toc ought to be aligned to 8 bytes.
8060 If not, don't mark as unused. */
8066 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8071 skip
[val
>> 3] = ref_from_discarded
;
8074 if (elf_section_data (sec
)->relocs
!= relstart
)
8078 /* For largetoc loads of address constants, we can convert
8079 . addis rx,2,addr@got@ha
8080 . ld ry,addr@got@l(rx)
8082 . addis rx,2,addr@toc@ha
8083 . addi ry,rx,addr@toc@l
8084 when addr is within 2G of the toc pointer. This then means
8085 that the word storing "addr" in the toc is no longer needed. */
8087 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8088 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8089 && toc
->reloc_count
!= 0)
8091 /* Read toc relocs. */
8092 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8094 if (toc_relocs
== NULL
)
8097 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8099 enum elf_ppc64_reloc_type r_type
;
8100 unsigned long r_symndx
;
8102 struct elf_link_hash_entry
*h
;
8103 Elf_Internal_Sym
*sym
;
8106 r_type
= ELF64_R_TYPE (rel
->r_info
);
8107 if (r_type
!= R_PPC64_ADDR64
)
8110 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8111 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8116 || elf_discarded_section (sym_sec
))
8119 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8124 if (h
->type
== STT_GNU_IFUNC
)
8126 val
= h
->root
.u
.def
.value
;
8130 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8132 val
= sym
->st_value
;
8134 val
+= rel
->r_addend
;
8135 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8137 /* We don't yet know the exact toc pointer value, but we
8138 know it will be somewhere in the toc section. Don't
8139 optimize if the difference from any possible toc
8140 pointer is outside [ff..f80008000, 7fff7fff]. */
8141 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8142 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8145 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8146 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8151 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8156 skip
[rel
->r_offset
>> 3]
8157 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8164 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8168 if (local_syms
!= NULL
8169 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8173 && elf_section_data (sec
)->relocs
!= relstart
)
8175 if (toc_relocs
!= NULL
8176 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8183 /* Now check all kept sections that might reference the toc.
8184 Check the toc itself last. */
8185 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8188 sec
= (sec
== toc
? NULL
8189 : sec
->next
== NULL
? toc
8190 : sec
->next
== toc
&& toc
->next
? toc
->next
8195 if (sec
->reloc_count
== 0
8196 || elf_discarded_section (sec
)
8197 || get_opd_info (sec
)
8198 || (sec
->flags
& SEC_ALLOC
) == 0
8199 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8202 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8204 if (relstart
== NULL
)
8207 /* Mark toc entries referenced as used. */
8210 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8212 enum elf_ppc64_reloc_type r_type
;
8213 unsigned long r_symndx
;
8215 struct elf_link_hash_entry
*h
;
8216 Elf_Internal_Sym
*sym
;
8219 r_type
= ELF64_R_TYPE (rel
->r_info
);
8223 case R_PPC64_TOC16_LO
:
8224 case R_PPC64_TOC16_HI
:
8225 case R_PPC64_TOC16_HA
:
8226 case R_PPC64_TOC16_DS
:
8227 case R_PPC64_TOC16_LO_DS
:
8228 /* In case we're taking addresses of toc entries. */
8229 case R_PPC64_ADDR64
:
8236 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8237 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8248 val
= h
->root
.u
.def
.value
;
8250 val
= sym
->st_value
;
8251 val
+= rel
->r_addend
;
8253 if (val
>= toc
->size
)
8256 if ((skip
[val
>> 3] & can_optimize
) != 0)
8263 case R_PPC64_TOC16_HA
:
8266 case R_PPC64_TOC16_LO_DS
:
8267 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8268 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8270 if ((opc
& (0x3f << 2)) == (58u << 2))
8275 /* Wrong sort of reloc, or not a ld. We may
8276 as well clear ref_from_discarded too. */
8281 /* For the toc section, we only mark as used if
8282 this entry itself isn't unused. */
8285 && (used
[rel
->r_offset
>> 3]
8286 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8287 /* Do all the relocs again, to catch reference
8295 if (elf_section_data (sec
)->relocs
!= relstart
)
8299 /* Merge the used and skip arrays. Assume that TOC
8300 doublewords not appearing as either used or unused belong
8301 to to an entry more than one doubleword in size. */
8302 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8303 drop
< skip
+ (toc
->size
+ 7) / 8;
8308 *drop
&= ~ref_from_discarded
;
8309 if ((*drop
& can_optimize
) != 0)
8316 last
= ref_from_discarded
;
8326 bfd_byte
*contents
, *src
;
8328 Elf_Internal_Sym
*sym
;
8329 bfd_boolean local_toc_syms
= FALSE
;
8331 /* Shuffle the toc contents, and at the same time convert the
8332 skip array from booleans into offsets. */
8333 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8336 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8338 for (src
= contents
, off
= 0, drop
= skip
;
8339 src
< contents
+ toc
->size
;
8342 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8347 memcpy (src
- off
, src
, 8);
8351 toc
->rawsize
= toc
->size
;
8352 toc
->size
= src
- contents
- off
;
8354 /* Adjust addends for relocs against the toc section sym,
8355 and optimize any accesses we can. */
8356 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8358 if (sec
->reloc_count
== 0
8359 || elf_discarded_section (sec
))
8362 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8364 if (relstart
== NULL
)
8367 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8369 enum elf_ppc64_reloc_type r_type
;
8370 unsigned long r_symndx
;
8372 struct elf_link_hash_entry
*h
;
8375 r_type
= ELF64_R_TYPE (rel
->r_info
);
8382 case R_PPC64_TOC16_LO
:
8383 case R_PPC64_TOC16_HI
:
8384 case R_PPC64_TOC16_HA
:
8385 case R_PPC64_TOC16_DS
:
8386 case R_PPC64_TOC16_LO_DS
:
8387 case R_PPC64_ADDR64
:
8391 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8392 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8400 val
= h
->root
.u
.def
.value
;
8403 val
= sym
->st_value
;
8405 local_toc_syms
= TRUE
;
8408 val
+= rel
->r_addend
;
8410 if (val
> toc
->rawsize
)
8412 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8414 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8416 Elf_Internal_Rela
*tocrel
8417 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8418 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8422 case R_PPC64_TOC16_HA
:
8423 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8426 case R_PPC64_TOC16_LO_DS
:
8427 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8433 rel
->r_addend
= tocrel
->r_addend
;
8434 elf_section_data (sec
)->relocs
= relstart
;
8438 if (h
!= NULL
|| sym
->st_value
!= 0)
8441 rel
->r_addend
-= skip
[val
>> 3];
8442 elf_section_data (sec
)->relocs
= relstart
;
8445 if (elf_section_data (sec
)->relocs
!= relstart
)
8449 /* We shouldn't have local or global symbols defined in the TOC,
8450 but handle them anyway. */
8451 if (local_syms
!= NULL
)
8452 for (sym
= local_syms
;
8453 sym
< local_syms
+ symtab_hdr
->sh_info
;
8455 if (sym
->st_value
!= 0
8456 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8460 if (sym
->st_value
> toc
->rawsize
)
8461 i
= toc
->rawsize
>> 3;
8463 i
= sym
->st_value
>> 3;
8465 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8468 (*_bfd_error_handler
)
8469 (_("%s defined on removed toc entry"),
8470 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8473 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8474 sym
->st_value
= (bfd_vma
) i
<< 3;
8477 sym
->st_value
-= skip
[i
];
8478 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8481 /* Adjust any global syms defined in this toc input section. */
8482 if (toc_inf
.global_toc_syms
)
8485 toc_inf
.skip
= skip
;
8486 toc_inf
.global_toc_syms
= FALSE
;
8487 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8491 if (toc
->reloc_count
!= 0)
8493 Elf_Internal_Shdr
*rel_hdr
;
8494 Elf_Internal_Rela
*wrel
;
8497 /* Remove unused toc relocs, and adjust those we keep. */
8498 if (toc_relocs
== NULL
)
8499 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8501 if (toc_relocs
== NULL
)
8505 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8506 if ((skip
[rel
->r_offset
>> 3]
8507 & (ref_from_discarded
| can_optimize
)) == 0)
8509 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8510 wrel
->r_info
= rel
->r_info
;
8511 wrel
->r_addend
= rel
->r_addend
;
8514 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8515 &local_syms
, NULL
, NULL
))
8518 elf_section_data (toc
)->relocs
= toc_relocs
;
8519 toc
->reloc_count
= wrel
- toc_relocs
;
8520 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8521 sz
= rel_hdr
->sh_entsize
;
8522 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8525 else if (toc_relocs
!= NULL
8526 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8529 if (local_syms
!= NULL
8530 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8532 if (!info
->keep_memory
)
8535 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8543 /* Return true iff input section I references the TOC using
8544 instructions limited to +/-32k offsets. */
8547 ppc64_elf_has_small_toc_reloc (asection
*i
)
8549 return (is_ppc64_elf (i
->owner
)
8550 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8553 /* Allocate space for one GOT entry. */
8556 allocate_got (struct elf_link_hash_entry
*h
,
8557 struct bfd_link_info
*info
,
8558 struct got_entry
*gent
)
8560 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8562 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8563 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8565 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8566 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8567 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8569 gent
->got
.offset
= got
->size
;
8570 got
->size
+= entsize
;
8572 dyn
= htab
->elf
.dynamic_sections_created
;
8574 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8575 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8576 || h
->root
.type
!= bfd_link_hash_undefweak
))
8578 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8579 relgot
->size
+= rentsize
;
8581 else if (h
->type
== STT_GNU_IFUNC
)
8583 asection
*relgot
= htab
->reliplt
;
8584 relgot
->size
+= rentsize
;
8585 htab
->got_reli_size
+= rentsize
;
8589 /* This function merges got entries in the same toc group. */
8592 merge_got_entries (struct got_entry
**pent
)
8594 struct got_entry
*ent
, *ent2
;
8596 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8597 if (!ent
->is_indirect
)
8598 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8599 if (!ent2
->is_indirect
8600 && ent2
->addend
== ent
->addend
8601 && ent2
->tls_type
== ent
->tls_type
8602 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8604 ent2
->is_indirect
= TRUE
;
8605 ent2
->got
.ent
= ent
;
8609 /* Allocate space in .plt, .got and associated reloc sections for
8613 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8615 struct bfd_link_info
*info
;
8616 struct ppc_link_hash_table
*htab
;
8618 struct ppc_link_hash_entry
*eh
;
8619 struct ppc_dyn_relocs
*p
;
8620 struct got_entry
**pgent
, *gent
;
8622 if (h
->root
.type
== bfd_link_hash_indirect
)
8625 if (h
->root
.type
== bfd_link_hash_warning
)
8626 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8628 info
= (struct bfd_link_info
*) inf
;
8629 htab
= ppc_hash_table (info
);
8633 if ((htab
->elf
.dynamic_sections_created
8635 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8636 || h
->type
== STT_GNU_IFUNC
)
8638 struct plt_entry
*pent
;
8639 bfd_boolean doneone
= FALSE
;
8640 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8641 if (pent
->plt
.refcount
> 0)
8643 if (!htab
->elf
.dynamic_sections_created
8644 || h
->dynindx
== -1)
8647 pent
->plt
.offset
= s
->size
;
8648 s
->size
+= PLT_ENTRY_SIZE
;
8653 /* If this is the first .plt entry, make room for the special
8657 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8659 pent
->plt
.offset
= s
->size
;
8661 /* Make room for this entry. */
8662 s
->size
+= PLT_ENTRY_SIZE
;
8664 /* Make room for the .glink code. */
8667 s
->size
+= GLINK_CALL_STUB_SIZE
;
8668 /* We need bigger stubs past index 32767. */
8669 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8673 /* We also need to make an entry in the .rela.plt section. */
8676 s
->size
+= sizeof (Elf64_External_Rela
);
8680 pent
->plt
.offset
= (bfd_vma
) -1;
8683 h
->plt
.plist
= NULL
;
8689 h
->plt
.plist
= NULL
;
8693 eh
= (struct ppc_link_hash_entry
*) h
;
8694 /* Run through the TLS GD got entries first if we're changing them
8696 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8697 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8698 if (gent
->got
.refcount
> 0
8699 && (gent
->tls_type
& TLS_GD
) != 0)
8701 /* This was a GD entry that has been converted to TPREL. If
8702 there happens to be a TPREL entry we can use that one. */
8703 struct got_entry
*ent
;
8704 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8705 if (ent
->got
.refcount
> 0
8706 && (ent
->tls_type
& TLS_TPREL
) != 0
8707 && ent
->addend
== gent
->addend
8708 && ent
->owner
== gent
->owner
)
8710 gent
->got
.refcount
= 0;
8714 /* If not, then we'll be using our own TPREL entry. */
8715 if (gent
->got
.refcount
!= 0)
8716 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8719 /* Remove any list entry that won't generate a word in the GOT before
8720 we call merge_got_entries. Otherwise we risk merging to empty
8722 pgent
= &h
->got
.glist
;
8723 while ((gent
= *pgent
) != NULL
)
8724 if (gent
->got
.refcount
> 0)
8726 if ((gent
->tls_type
& TLS_LD
) != 0
8729 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8730 *pgent
= gent
->next
;
8733 pgent
= &gent
->next
;
8736 *pgent
= gent
->next
;
8738 if (!htab
->do_multi_toc
)
8739 merge_got_entries (&h
->got
.glist
);
8741 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8742 if (!gent
->is_indirect
)
8744 /* Make sure this symbol is output as a dynamic symbol.
8745 Undefined weak syms won't yet be marked as dynamic,
8746 nor will all TLS symbols. */
8747 if (h
->dynindx
== -1
8749 && h
->type
!= STT_GNU_IFUNC
8750 && htab
->elf
.dynamic_sections_created
)
8752 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8756 if (!is_ppc64_elf (gent
->owner
))
8759 allocate_got (h
, info
, gent
);
8762 if (eh
->dyn_relocs
== NULL
8763 || (!htab
->elf
.dynamic_sections_created
8764 && h
->type
!= STT_GNU_IFUNC
))
8767 /* In the shared -Bsymbolic case, discard space allocated for
8768 dynamic pc-relative relocs against symbols which turn out to be
8769 defined in regular objects. For the normal shared case, discard
8770 space for relocs that have become local due to symbol visibility
8775 /* Relocs that use pc_count are those that appear on a call insn,
8776 or certain REL relocs (see must_be_dyn_reloc) that can be
8777 generated via assembly. We want calls to protected symbols to
8778 resolve directly to the function rather than going via the plt.
8779 If people want function pointer comparisons to work as expected
8780 then they should avoid writing weird assembly. */
8781 if (SYMBOL_CALLS_LOCAL (info
, h
))
8783 struct ppc_dyn_relocs
**pp
;
8785 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8787 p
->count
-= p
->pc_count
;
8796 /* Also discard relocs on undefined weak syms with non-default
8798 if (eh
->dyn_relocs
!= NULL
8799 && h
->root
.type
== bfd_link_hash_undefweak
)
8801 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8802 eh
->dyn_relocs
= NULL
;
8804 /* Make sure this symbol is output as a dynamic symbol.
8805 Undefined weak syms won't yet be marked as dynamic. */
8806 else if (h
->dynindx
== -1
8807 && !h
->forced_local
)
8809 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8814 else if (h
->type
== STT_GNU_IFUNC
)
8816 if (!h
->non_got_ref
)
8817 eh
->dyn_relocs
= NULL
;
8819 else if (ELIMINATE_COPY_RELOCS
)
8821 /* For the non-shared case, discard space for relocs against
8822 symbols which turn out to need copy relocs or are not
8828 /* Make sure this symbol is output as a dynamic symbol.
8829 Undefined weak syms won't yet be marked as dynamic. */
8830 if (h
->dynindx
== -1
8831 && !h
->forced_local
)
8833 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8837 /* If that succeeded, we know we'll be keeping all the
8839 if (h
->dynindx
!= -1)
8843 eh
->dyn_relocs
= NULL
;
8848 /* Finally, allocate space. */
8849 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8851 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8852 if (!htab
->elf
.dynamic_sections_created
)
8853 sreloc
= htab
->reliplt
;
8854 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8860 /* Find any dynamic relocs that apply to read-only sections. */
8863 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8865 struct ppc_link_hash_entry
*eh
;
8866 struct ppc_dyn_relocs
*p
;
8868 if (h
->root
.type
== bfd_link_hash_warning
)
8869 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8871 eh
= (struct ppc_link_hash_entry
*) h
;
8872 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8874 asection
*s
= p
->sec
->output_section
;
8876 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8878 struct bfd_link_info
*info
= inf
;
8880 info
->flags
|= DF_TEXTREL
;
8882 /* Not an error, just cut short the traversal. */
8889 /* Set the sizes of the dynamic sections. */
8892 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8893 struct bfd_link_info
*info
)
8895 struct ppc_link_hash_table
*htab
;
8900 struct got_entry
*first_tlsld
;
8902 htab
= ppc_hash_table (info
);
8906 dynobj
= htab
->elf
.dynobj
;
8910 if (htab
->elf
.dynamic_sections_created
)
8912 /* Set the contents of the .interp section to the interpreter. */
8913 if (info
->executable
)
8915 s
= bfd_get_section_by_name (dynobj
, ".interp");
8918 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8919 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8923 /* Set up .got offsets for local syms, and space for local dynamic
8925 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8927 struct got_entry
**lgot_ents
;
8928 struct got_entry
**end_lgot_ents
;
8929 struct plt_entry
**local_plt
;
8930 struct plt_entry
**end_local_plt
;
8931 unsigned char *lgot_masks
;
8932 bfd_size_type locsymcount
;
8933 Elf_Internal_Shdr
*symtab_hdr
;
8936 if (!is_ppc64_elf (ibfd
))
8939 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8941 struct ppc_dyn_relocs
*p
;
8943 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8945 if (!bfd_is_abs_section (p
->sec
)
8946 && bfd_is_abs_section (p
->sec
->output_section
))
8948 /* Input section has been discarded, either because
8949 it is a copy of a linkonce section or due to
8950 linker script /DISCARD/, so we'll be discarding
8953 else if (p
->count
!= 0)
8955 srel
= elf_section_data (p
->sec
)->sreloc
;
8956 if (!htab
->elf
.dynamic_sections_created
)
8957 srel
= htab
->reliplt
;
8958 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8959 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8960 info
->flags
|= DF_TEXTREL
;
8965 lgot_ents
= elf_local_got_ents (ibfd
);
8969 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8970 locsymcount
= symtab_hdr
->sh_info
;
8971 end_lgot_ents
= lgot_ents
+ locsymcount
;
8972 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8973 end_local_plt
= local_plt
+ locsymcount
;
8974 lgot_masks
= (unsigned char *) end_local_plt
;
8975 s
= ppc64_elf_tdata (ibfd
)->got
;
8976 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8977 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8979 struct got_entry
**pent
, *ent
;
8982 while ((ent
= *pent
) != NULL
)
8983 if (ent
->got
.refcount
> 0)
8985 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8987 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8992 unsigned int num
= 1;
8993 ent
->got
.offset
= s
->size
;
8994 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8998 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8999 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
9002 += num
* sizeof (Elf64_External_Rela
);
9004 += num
* sizeof (Elf64_External_Rela
);
9013 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9014 for (; local_plt
< end_local_plt
; ++local_plt
)
9016 struct plt_entry
*ent
;
9018 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9019 if (ent
->plt
.refcount
> 0)
9022 ent
->plt
.offset
= s
->size
;
9023 s
->size
+= PLT_ENTRY_SIZE
;
9025 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
9028 ent
->plt
.offset
= (bfd_vma
) -1;
9032 /* Allocate global sym .plt and .got entries, and space for global
9033 sym dynamic relocs. */
9034 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9037 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9039 struct got_entry
*ent
;
9041 if (!is_ppc64_elf (ibfd
))
9044 ent
= ppc64_tlsld_got (ibfd
);
9045 if (ent
->got
.refcount
> 0)
9047 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9049 ent
->is_indirect
= TRUE
;
9050 ent
->got
.ent
= first_tlsld
;
9054 if (first_tlsld
== NULL
)
9056 s
= ppc64_elf_tdata (ibfd
)->got
;
9057 ent
->got
.offset
= s
->size
;
9062 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9063 srel
->size
+= sizeof (Elf64_External_Rela
);
9068 ent
->got
.offset
= (bfd_vma
) -1;
9071 /* We now have determined the sizes of the various dynamic sections.
9072 Allocate memory for them. */
9074 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9076 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9079 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9080 /* These haven't been allocated yet; don't strip. */
9082 else if (s
== htab
->got
9086 || s
== htab
->dynbss
)
9088 /* Strip this section if we don't need it; see the
9091 else if (CONST_STRNEQ (s
->name
, ".rela"))
9095 if (s
!= htab
->relplt
)
9098 /* We use the reloc_count field as a counter if we need
9099 to copy relocs into the output file. */
9105 /* It's not one of our sections, so don't allocate space. */
9111 /* If we don't need this section, strip it from the
9112 output file. This is mostly to handle .rela.bss and
9113 .rela.plt. We must create both sections in
9114 create_dynamic_sections, because they must be created
9115 before the linker maps input sections to output
9116 sections. The linker does that before
9117 adjust_dynamic_symbol is called, and it is that
9118 function which decides whether anything needs to go
9119 into these sections. */
9120 s
->flags
|= SEC_EXCLUDE
;
9124 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9127 /* Allocate memory for the section contents. We use bfd_zalloc
9128 here in case unused entries are not reclaimed before the
9129 section's contents are written out. This should not happen,
9130 but this way if it does we get a R_PPC64_NONE reloc in .rela
9131 sections instead of garbage.
9132 We also rely on the section contents being zero when writing
9134 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9135 if (s
->contents
== NULL
)
9139 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9141 if (!is_ppc64_elf (ibfd
))
9144 s
= ppc64_elf_tdata (ibfd
)->got
;
9145 if (s
!= NULL
&& s
!= htab
->got
)
9148 s
->flags
|= SEC_EXCLUDE
;
9151 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9152 if (s
->contents
== NULL
)
9156 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9160 s
->flags
|= SEC_EXCLUDE
;
9163 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9164 if (s
->contents
== NULL
)
9172 if (htab
->elf
.dynamic_sections_created
)
9174 /* Add some entries to the .dynamic section. We fill in the
9175 values later, in ppc64_elf_finish_dynamic_sections, but we
9176 must add the entries now so that we get the correct size for
9177 the .dynamic section. The DT_DEBUG entry is filled in by the
9178 dynamic linker and used by the debugger. */
9179 #define add_dynamic_entry(TAG, VAL) \
9180 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9182 if (info
->executable
)
9184 if (!add_dynamic_entry (DT_DEBUG
, 0))
9188 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9190 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9191 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9192 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9193 || !add_dynamic_entry (DT_JMPREL
, 0)
9194 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9200 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9201 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9205 if (!htab
->no_tls_get_addr_opt
9206 && htab
->tls_get_addr_fd
!= NULL
9207 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9208 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9213 if (!add_dynamic_entry (DT_RELA
, 0)
9214 || !add_dynamic_entry (DT_RELASZ
, 0)
9215 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9218 /* If any dynamic relocs apply to a read-only section,
9219 then we need a DT_TEXTREL entry. */
9220 if ((info
->flags
& DF_TEXTREL
) == 0)
9221 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9223 if ((info
->flags
& DF_TEXTREL
) != 0)
9225 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9230 #undef add_dynamic_entry
9235 /* Determine the type of stub needed, if any, for a call. */
9237 static inline enum ppc_stub_type
9238 ppc_type_of_stub (asection
*input_sec
,
9239 const Elf_Internal_Rela
*rel
,
9240 struct ppc_link_hash_entry
**hash
,
9241 struct plt_entry
**plt_ent
,
9242 bfd_vma destination
)
9244 struct ppc_link_hash_entry
*h
= *hash
;
9246 bfd_vma branch_offset
;
9247 bfd_vma max_branch_offset
;
9248 enum elf_ppc64_reloc_type r_type
;
9252 struct plt_entry
*ent
;
9253 struct ppc_link_hash_entry
*fdh
= h
;
9255 && h
->oh
->is_func_descriptor
)
9257 fdh
= ppc_follow_link (h
->oh
);
9261 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9262 if (ent
->addend
== rel
->r_addend
9263 && ent
->plt
.offset
!= (bfd_vma
) -1)
9266 return ppc_stub_plt_call
;
9269 /* Here, we know we don't have a plt entry. If we don't have a
9270 either a defined function descriptor or a defined entry symbol
9271 in a regular object file, then it is pointless trying to make
9272 any other type of stub. */
9273 if (!is_static_defined (&fdh
->elf
)
9274 && !is_static_defined (&h
->elf
))
9275 return ppc_stub_none
;
9277 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9279 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9280 struct plt_entry
**local_plt
= (struct plt_entry
**)
9281 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9282 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9284 if (local_plt
[r_symndx
] != NULL
)
9286 struct plt_entry
*ent
;
9288 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9289 if (ent
->addend
== rel
->r_addend
9290 && ent
->plt
.offset
!= (bfd_vma
) -1)
9293 return ppc_stub_plt_call
;
9298 /* Determine where the call point is. */
9299 location
= (input_sec
->output_offset
9300 + input_sec
->output_section
->vma
9303 branch_offset
= destination
- location
;
9304 r_type
= ELF64_R_TYPE (rel
->r_info
);
9306 /* Determine if a long branch stub is needed. */
9307 max_branch_offset
= 1 << 25;
9308 if (r_type
!= R_PPC64_REL24
)
9309 max_branch_offset
= 1 << 15;
9311 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9312 /* We need a stub. Figure out whether a long_branch or plt_branch
9314 return ppc_stub_long_branch
;
9316 return ppc_stub_none
;
9319 /* Build a .plt call stub. */
9321 static inline bfd_byte
*
9322 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9324 #define PPC_LO(v) ((v) & 0xffff)
9325 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9326 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9328 if (PPC_HA (offset
) != 0)
9332 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9333 r
[1].r_offset
= r
[0].r_offset
+ 8;
9334 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9335 r
[1].r_addend
= r
[0].r_addend
;
9336 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9338 r
[2].r_offset
= r
[1].r_offset
+ 4;
9339 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9340 r
[2].r_addend
= r
[0].r_addend
;
9344 r
[2].r_offset
= r
[1].r_offset
+ 8;
9345 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9346 r
[2].r_addend
= r
[0].r_addend
+ 8;
9347 r
[3].r_offset
= r
[2].r_offset
+ 4;
9348 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9349 r
[3].r_addend
= r
[0].r_addend
+ 16;
9352 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9353 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9354 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9355 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9357 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9360 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9361 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9362 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9363 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9370 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9371 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9373 r
[1].r_offset
= r
[0].r_offset
+ 4;
9374 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9375 r
[1].r_addend
= r
[0].r_addend
;
9379 r
[1].r_offset
= r
[0].r_offset
+ 8;
9380 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9381 r
[1].r_addend
= r
[0].r_addend
+ 16;
9382 r
[2].r_offset
= r
[1].r_offset
+ 4;
9383 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9384 r
[2].r_addend
= r
[0].r_addend
+ 8;
9387 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9388 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9389 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9391 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9394 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9395 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9396 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9397 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9402 /* Build a special .plt call stub for __tls_get_addr. */
9404 #define LD_R11_0R3 0xe9630000
9405 #define LD_R12_0R3 0xe9830000
9406 #define MR_R0_R3 0x7c601b78
9407 #define CMPDI_R11_0 0x2c2b0000
9408 #define ADD_R3_R12_R13 0x7c6c6a14
9409 #define BEQLR 0x4d820020
9410 #define MR_R3_R0 0x7c030378
9411 #define MFLR_R11 0x7d6802a6
9412 #define STD_R11_0R1 0xf9610000
9413 #define BCTRL 0x4e800421
9414 #define LD_R11_0R1 0xe9610000
9415 #define LD_R2_0R1 0xe8410000
9416 #define MTLR_R11 0x7d6803a6
9418 static inline bfd_byte
*
9419 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9420 Elf_Internal_Rela
*r
)
9422 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9423 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9424 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9425 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9426 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9427 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9428 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9429 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9430 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9433 r
[0].r_offset
+= 9 * 4;
9434 p
= build_plt_stub (obfd
, p
, offset
, r
);
9435 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9437 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9438 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9439 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9440 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9445 static Elf_Internal_Rela
*
9446 get_relocs (asection
*sec
, int count
)
9448 Elf_Internal_Rela
*relocs
;
9449 struct bfd_elf_section_data
*elfsec_data
;
9451 elfsec_data
= elf_section_data (sec
);
9452 relocs
= elfsec_data
->relocs
;
9455 bfd_size_type relsize
;
9456 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9457 relocs
= bfd_alloc (sec
->owner
, relsize
);
9460 elfsec_data
->relocs
= relocs
;
9461 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9462 sizeof (Elf_Internal_Shdr
));
9463 if (elfsec_data
->rela
.hdr
== NULL
)
9465 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9466 * sizeof (Elf64_External_Rela
));
9467 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9468 sec
->reloc_count
= 0;
9470 relocs
+= sec
->reloc_count
;
9471 sec
->reloc_count
+= count
;
9476 get_r2off (struct ppc_link_hash_table
*htab
,
9477 struct ppc_stub_hash_entry
*stub_entry
)
9479 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9483 /* Support linking -R objects. Get the toc pointer from the
9486 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9487 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9489 if (strcmp (opd
->name
, ".opd") != 0
9490 || opd
->reloc_count
!= 0)
9492 (*_bfd_error_handler
) (_("cannot find opd entry toc for %s"),
9493 stub_entry
->h
->elf
.root
.root
.string
);
9494 bfd_set_error (bfd_error_bad_value
);
9497 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9499 r2off
= bfd_get_64 (opd
->owner
, buf
);
9500 r2off
-= elf_gp (stub_entry
->id_sec
->output_section
->owner
);
9502 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9507 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9509 struct ppc_stub_hash_entry
*stub_entry
;
9510 struct ppc_branch_hash_entry
*br_entry
;
9511 struct bfd_link_info
*info
;
9512 struct ppc_link_hash_table
*htab
;
9517 Elf_Internal_Rela
*r
;
9520 /* Massage our args to the form they really have. */
9521 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9524 htab
= ppc_hash_table (info
);
9528 /* Make a note of the offset within the stubs for this entry. */
9529 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9530 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9532 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9533 switch (stub_entry
->stub_type
)
9535 case ppc_stub_long_branch
:
9536 case ppc_stub_long_branch_r2off
:
9537 /* Branches are relative. This is where we are going to. */
9538 off
= dest
= (stub_entry
->target_value
9539 + stub_entry
->target_section
->output_offset
9540 + stub_entry
->target_section
->output_section
->vma
);
9542 /* And this is where we are coming from. */
9543 off
-= (stub_entry
->stub_offset
9544 + stub_entry
->stub_sec
->output_offset
9545 + stub_entry
->stub_sec
->output_section
->vma
);
9548 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9550 bfd_vma r2off
= get_r2off (htab
, stub_entry
);
9554 htab
->stub_error
= TRUE
;
9557 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9560 if (PPC_HA (r2off
) != 0)
9563 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9566 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9570 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9572 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9574 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9575 stub_entry
->root
.string
);
9576 htab
->stub_error
= TRUE
;
9580 if (info
->emitrelocations
)
9582 r
= get_relocs (stub_entry
->stub_sec
, 1);
9585 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9586 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9588 if (stub_entry
->h
!= NULL
)
9590 struct elf_link_hash_entry
**hashes
;
9591 unsigned long symndx
;
9592 struct ppc_link_hash_entry
*h
;
9594 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9597 bfd_size_type hsize
;
9599 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9600 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9603 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9604 htab
->stub_globals
= 1;
9606 symndx
= htab
->stub_globals
++;
9608 hashes
[symndx
] = &h
->elf
;
9609 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9610 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9611 h
= ppc_follow_link (h
->oh
);
9612 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9613 /* H is an opd symbol. The addend must be zero. */
9617 off
= (h
->elf
.root
.u
.def
.value
9618 + h
->elf
.root
.u
.def
.section
->output_offset
9619 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9626 case ppc_stub_plt_branch
:
9627 case ppc_stub_plt_branch_r2off
:
9628 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9629 stub_entry
->root
.string
+ 9,
9631 if (br_entry
== NULL
)
9633 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9634 stub_entry
->root
.string
);
9635 htab
->stub_error
= TRUE
;
9639 dest
= (stub_entry
->target_value
9640 + stub_entry
->target_section
->output_offset
9641 + stub_entry
->target_section
->output_section
->vma
);
9643 bfd_put_64 (htab
->brlt
->owner
, dest
,
9644 htab
->brlt
->contents
+ br_entry
->offset
);
9646 if (br_entry
->iter
== htab
->stub_iteration
)
9650 if (htab
->relbrlt
!= NULL
)
9652 /* Create a reloc for the branch lookup table entry. */
9653 Elf_Internal_Rela rela
;
9656 rela
.r_offset
= (br_entry
->offset
9657 + htab
->brlt
->output_offset
9658 + htab
->brlt
->output_section
->vma
);
9659 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9660 rela
.r_addend
= dest
;
9662 rl
= htab
->relbrlt
->contents
;
9663 rl
+= (htab
->relbrlt
->reloc_count
++
9664 * sizeof (Elf64_External_Rela
));
9665 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9667 else if (info
->emitrelocations
)
9669 r
= get_relocs (htab
->brlt
, 1);
9672 /* brlt, being SEC_LINKER_CREATED does not go through the
9673 normal reloc processing. Symbols and offsets are not
9674 translated from input file to output file form, so
9675 set up the offset per the output file. */
9676 r
->r_offset
= (br_entry
->offset
9677 + htab
->brlt
->output_offset
9678 + htab
->brlt
->output_section
->vma
);
9679 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9684 dest
= (br_entry
->offset
9685 + htab
->brlt
->output_offset
9686 + htab
->brlt
->output_section
->vma
);
9689 - elf_gp (htab
->brlt
->output_section
->owner
)
9690 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9692 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9694 (*_bfd_error_handler
)
9695 (_("linkage table error against `%s'"),
9696 stub_entry
->root
.string
);
9697 bfd_set_error (bfd_error_bad_value
);
9698 htab
->stub_error
= TRUE
;
9702 if (info
->emitrelocations
)
9704 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9707 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9708 if (bfd_big_endian (info
->output_bfd
))
9710 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9712 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9713 r
[0].r_addend
= dest
;
9714 if (PPC_HA (off
) != 0)
9716 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9717 r
[1].r_offset
= r
[0].r_offset
+ 4;
9718 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9719 r
[1].r_addend
= r
[0].r_addend
;
9723 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9725 if (PPC_HA (off
) != 0)
9728 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9730 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9735 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9740 bfd_vma r2off
= get_r2off (htab
, stub_entry
);
9744 htab
->stub_error
= TRUE
;
9748 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9751 if (PPC_HA (off
) != 0)
9754 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9756 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9761 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9765 if (PPC_HA (r2off
) != 0)
9768 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9771 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9774 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9776 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9779 case ppc_stub_plt_call
:
9780 if (stub_entry
->h
!= NULL
9781 && stub_entry
->h
->is_func_descriptor
9782 && stub_entry
->h
->oh
!= NULL
)
9784 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9786 /* If the old-ABI "dot-symbol" is undefined make it weak so
9787 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9788 FIXME: We used to define the symbol on one of the call
9789 stubs instead, which is why we test symbol section id
9790 against htab->top_id in various places. Likely all
9791 these checks could now disappear. */
9792 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9793 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9794 /* Stop undo_symbol_twiddle changing it back to undefined. */
9795 fh
->was_undefined
= 0;
9798 /* Now build the stub. */
9799 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9800 if (dest
>= (bfd_vma
) -2)
9804 if (!htab
->elf
.dynamic_sections_created
9805 || stub_entry
->h
== NULL
9806 || stub_entry
->h
->elf
.dynindx
== -1)
9809 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9811 if (stub_entry
->h
== NULL
9812 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9814 Elf_Internal_Rela rela
;
9817 rela
.r_offset
= dest
;
9818 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9819 rela
.r_addend
= (stub_entry
->target_value
9820 + stub_entry
->target_section
->output_offset
9821 + stub_entry
->target_section
->output_section
->vma
);
9823 rl
= (htab
->reliplt
->contents
9824 + (htab
->reliplt
->reloc_count
++
9825 * sizeof (Elf64_External_Rela
)));
9826 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9827 stub_entry
->plt_ent
->plt
.offset
|= 1;
9831 - elf_gp (plt
->output_section
->owner
)
9832 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9834 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9836 (*_bfd_error_handler
)
9837 (_("linkage table error against `%s'"),
9838 stub_entry
->h
!= NULL
9839 ? stub_entry
->h
->elf
.root
.root
.string
9841 bfd_set_error (bfd_error_bad_value
);
9842 htab
->stub_error
= TRUE
;
9847 if (info
->emitrelocations
)
9849 r
= get_relocs (stub_entry
->stub_sec
,
9850 (2 + (PPC_HA (off
) != 0)
9851 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9854 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9855 if (bfd_big_endian (info
->output_bfd
))
9857 r
[0].r_addend
= dest
;
9859 if (stub_entry
->h
!= NULL
9860 && (stub_entry
->h
== htab
->tls_get_addr_fd
9861 || stub_entry
->h
== htab
->tls_get_addr
)
9862 && !htab
->no_tls_get_addr_opt
)
9863 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9865 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9874 stub_entry
->stub_sec
->size
+= size
;
9876 if (htab
->emit_stub_syms
)
9878 struct elf_link_hash_entry
*h
;
9881 const char *const stub_str
[] = { "long_branch",
9882 "long_branch_r2off",
9887 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9888 len2
= strlen (stub_entry
->root
.string
);
9889 name
= bfd_malloc (len1
+ len2
+ 2);
9892 memcpy (name
, stub_entry
->root
.string
, 9);
9893 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9894 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9895 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9898 if (h
->root
.type
== bfd_link_hash_new
)
9900 h
->root
.type
= bfd_link_hash_defined
;
9901 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9902 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9905 h
->ref_regular_nonweak
= 1;
9906 h
->forced_local
= 1;
9914 /* As above, but don't actually build the stub. Just bump offset so
9915 we know stub section sizes, and select plt_branch stubs where
9916 long_branch stubs won't do. */
9919 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9921 struct ppc_stub_hash_entry
*stub_entry
;
9922 struct bfd_link_info
*info
;
9923 struct ppc_link_hash_table
*htab
;
9927 /* Massage our args to the form they really have. */
9928 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9931 htab
= ppc_hash_table (info
);
9935 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9938 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9939 if (off
>= (bfd_vma
) -2)
9942 if (!htab
->elf
.dynamic_sections_created
9943 || stub_entry
->h
== NULL
9944 || stub_entry
->h
->elf
.dynindx
== -1)
9946 off
+= (plt
->output_offset
9947 + plt
->output_section
->vma
9948 - elf_gp (plt
->output_section
->owner
)
9949 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9951 size
= PLT_CALL_STUB_SIZE
;
9952 if (PPC_HA (off
) == 0)
9954 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9956 if (stub_entry
->h
!= NULL
9957 && (stub_entry
->h
== htab
->tls_get_addr_fd
9958 || stub_entry
->h
== htab
->tls_get_addr
)
9959 && !htab
->no_tls_get_addr_opt
)
9961 if (info
->emitrelocations
)
9963 stub_entry
->stub_sec
->reloc_count
9964 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9965 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9970 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9974 off
= (stub_entry
->target_value
9975 + stub_entry
->target_section
->output_offset
9976 + stub_entry
->target_section
->output_section
->vma
);
9977 off
-= (stub_entry
->stub_sec
->size
9978 + stub_entry
->stub_sec
->output_offset
9979 + stub_entry
->stub_sec
->output_section
->vma
);
9981 /* Reset the stub type from the plt variant in case we now
9982 can reach with a shorter stub. */
9983 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9984 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9987 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9989 r2off
= get_r2off (htab
, stub_entry
);
9992 htab
->stub_error
= TRUE
;
9996 if (PPC_HA (r2off
) != 0)
10001 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10002 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10004 struct ppc_branch_hash_entry
*br_entry
;
10006 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10007 stub_entry
->root
.string
+ 9,
10009 if (br_entry
== NULL
)
10011 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
10012 stub_entry
->root
.string
);
10013 htab
->stub_error
= TRUE
;
10017 if (br_entry
->iter
!= htab
->stub_iteration
)
10019 br_entry
->iter
= htab
->stub_iteration
;
10020 br_entry
->offset
= htab
->brlt
->size
;
10021 htab
->brlt
->size
+= 8;
10023 if (htab
->relbrlt
!= NULL
)
10024 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10025 else if (info
->emitrelocations
)
10027 htab
->brlt
->reloc_count
+= 1;
10028 htab
->brlt
->flags
|= SEC_RELOC
;
10032 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10033 off
= (br_entry
->offset
10034 + htab
->brlt
->output_offset
10035 + htab
->brlt
->output_section
->vma
10036 - elf_gp (htab
->brlt
->output_section
->owner
)
10037 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10039 if (info
->emitrelocations
)
10041 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10042 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10045 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10048 if (PPC_HA (off
) != 0)
10054 if (PPC_HA (off
) != 0)
10057 if (PPC_HA (r2off
) != 0)
10061 else if (info
->emitrelocations
)
10063 stub_entry
->stub_sec
->reloc_count
+= 1;
10064 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10068 stub_entry
->stub_sec
->size
+= size
;
10072 /* Set up various things so that we can make a list of input sections
10073 for each output section included in the link. Returns -1 on error,
10074 0 when no stubs will be needed, and 1 on success. */
10077 ppc64_elf_setup_section_lists
10078 (struct bfd_link_info
*info
,
10079 asection
*(*add_stub_section
) (const char *, asection
*),
10080 void (*layout_sections_again
) (void))
10083 int top_id
, top_index
, id
;
10085 asection
**input_list
;
10087 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10091 /* Stash our params away. */
10092 htab
->add_stub_section
= add_stub_section
;
10093 htab
->layout_sections_again
= layout_sections_again
;
10095 if (htab
->brlt
== NULL
)
10098 /* Find the top input section id. */
10099 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10101 input_bfd
= input_bfd
->link_next
)
10103 for (section
= input_bfd
->sections
;
10105 section
= section
->next
)
10107 if (top_id
< section
->id
)
10108 top_id
= section
->id
;
10112 htab
->top_id
= top_id
;
10113 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10114 htab
->stub_group
= bfd_zmalloc (amt
);
10115 if (htab
->stub_group
== NULL
)
10118 /* Set toc_off for com, und, abs and ind sections. */
10119 for (id
= 0; id
< 3; id
++)
10120 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10122 /* We can't use output_bfd->section_count here to find the top output
10123 section index as some sections may have been removed, and
10124 strip_excluded_output_sections doesn't renumber the indices. */
10125 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10127 section
= section
->next
)
10129 if (top_index
< section
->index
)
10130 top_index
= section
->index
;
10133 htab
->top_index
= top_index
;
10134 amt
= sizeof (asection
*) * (top_index
+ 1);
10135 input_list
= bfd_zmalloc (amt
);
10136 htab
->input_list
= input_list
;
10137 if (input_list
== NULL
)
10143 /* Set up for first pass at multitoc partitioning. */
10146 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10148 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10150 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10151 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10152 htab
->toc_bfd
= NULL
;
10153 htab
->toc_first_sec
= NULL
;
10156 /* The linker repeatedly calls this function for each TOC input section
10157 and linker generated GOT section. Group input bfds such that the toc
10158 within a group is less than 64k in size. */
10161 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10163 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10164 bfd_vma addr
, off
, limit
;
10169 if (!htab
->second_toc_pass
)
10171 /* Keep track of the first .toc or .got section for this input bfd. */
10172 if (htab
->toc_bfd
!= isec
->owner
)
10174 htab
->toc_bfd
= isec
->owner
;
10175 htab
->toc_first_sec
= isec
;
10178 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10179 off
= addr
- htab
->toc_curr
;
10180 limit
= 0x80008000;
10181 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10183 if (off
+ isec
->size
> limit
)
10185 addr
= (htab
->toc_first_sec
->output_offset
10186 + htab
->toc_first_sec
->output_section
->vma
);
10187 htab
->toc_curr
= addr
;
10190 /* toc_curr is the base address of this toc group. Set elf_gp
10191 for the input section to be the offset relative to the
10192 output toc base plus 0x8000. Making the input elf_gp an
10193 offset allows us to move the toc as a whole without
10194 recalculating input elf_gp. */
10195 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10196 off
+= TOC_BASE_OFF
;
10198 /* Die if someone uses a linker script that doesn't keep input
10199 file .toc and .got together. */
10200 if (elf_gp (isec
->owner
) != 0
10201 && elf_gp (isec
->owner
) != off
)
10204 elf_gp (isec
->owner
) = off
;
10208 /* During the second pass toc_first_sec points to the start of
10209 a toc group, and toc_curr is used to track the old elf_gp.
10210 We use toc_bfd to ensure we only look at each bfd once. */
10211 if (htab
->toc_bfd
== isec
->owner
)
10213 htab
->toc_bfd
= isec
->owner
;
10215 if (htab
->toc_first_sec
== NULL
10216 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10218 htab
->toc_curr
= elf_gp (isec
->owner
);
10219 htab
->toc_first_sec
= isec
;
10221 addr
= (htab
->toc_first_sec
->output_offset
10222 + htab
->toc_first_sec
->output_section
->vma
);
10223 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10224 elf_gp (isec
->owner
) = off
;
10229 /* Called via elf_link_hash_traverse to merge GOT entries for global
10233 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10235 if (h
->root
.type
== bfd_link_hash_indirect
)
10238 if (h
->root
.type
== bfd_link_hash_warning
)
10239 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10241 merge_got_entries (&h
->got
.glist
);
10246 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10250 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10252 struct got_entry
*gent
;
10254 if (h
->root
.type
== bfd_link_hash_indirect
)
10257 if (h
->root
.type
== bfd_link_hash_warning
)
10258 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10260 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10261 if (!gent
->is_indirect
)
10262 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10266 /* Called on the first multitoc pass after the last call to
10267 ppc64_elf_next_toc_section. This function removes duplicate GOT
10271 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10273 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10274 struct bfd
*ibfd
, *ibfd2
;
10275 bfd_boolean done_something
;
10277 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10279 if (!htab
->do_multi_toc
)
10282 /* Merge global sym got entries within a toc group. */
10283 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10285 /* And tlsld_got. */
10286 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10288 struct got_entry
*ent
, *ent2
;
10290 if (!is_ppc64_elf (ibfd
))
10293 ent
= ppc64_tlsld_got (ibfd
);
10294 if (!ent
->is_indirect
10295 && ent
->got
.offset
!= (bfd_vma
) -1)
10297 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10299 if (!is_ppc64_elf (ibfd2
))
10302 ent2
= ppc64_tlsld_got (ibfd2
);
10303 if (!ent2
->is_indirect
10304 && ent2
->got
.offset
!= (bfd_vma
) -1
10305 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10307 ent2
->is_indirect
= TRUE
;
10308 ent2
->got
.ent
= ent
;
10314 /* Zap sizes of got sections. */
10315 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10316 htab
->reliplt
->size
-= htab
->got_reli_size
;
10317 htab
->got_reli_size
= 0;
10319 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10321 asection
*got
, *relgot
;
10323 if (!is_ppc64_elf (ibfd
))
10326 got
= ppc64_elf_tdata (ibfd
)->got
;
10329 got
->rawsize
= got
->size
;
10331 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10332 relgot
->rawsize
= relgot
->size
;
10337 /* Now reallocate the got, local syms first. We don't need to
10338 allocate section contents again since we never increase size. */
10339 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10341 struct got_entry
**lgot_ents
;
10342 struct got_entry
**end_lgot_ents
;
10343 struct plt_entry
**local_plt
;
10344 struct plt_entry
**end_local_plt
;
10345 unsigned char *lgot_masks
;
10346 bfd_size_type locsymcount
;
10347 Elf_Internal_Shdr
*symtab_hdr
;
10348 asection
*s
, *srel
;
10350 if (!is_ppc64_elf (ibfd
))
10353 lgot_ents
= elf_local_got_ents (ibfd
);
10357 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10358 locsymcount
= symtab_hdr
->sh_info
;
10359 end_lgot_ents
= lgot_ents
+ locsymcount
;
10360 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10361 end_local_plt
= local_plt
+ locsymcount
;
10362 lgot_masks
= (unsigned char *) end_local_plt
;
10363 s
= ppc64_elf_tdata (ibfd
)->got
;
10364 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10365 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10367 struct got_entry
*ent
;
10369 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10371 unsigned int num
= 1;
10372 ent
->got
.offset
= s
->size
;
10373 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10375 s
->size
+= num
* 8;
10377 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10378 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10380 htab
->reliplt
->size
10381 += num
* sizeof (Elf64_External_Rela
);
10382 htab
->got_reli_size
10383 += num
* sizeof (Elf64_External_Rela
);
10389 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10391 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10393 struct got_entry
*ent
;
10395 if (!is_ppc64_elf (ibfd
))
10398 ent
= ppc64_tlsld_got (ibfd
);
10399 if (!ent
->is_indirect
10400 && ent
->got
.offset
!= (bfd_vma
) -1)
10402 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10403 ent
->got
.offset
= s
->size
;
10407 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10408 srel
->size
+= sizeof (Elf64_External_Rela
);
10413 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10414 if (!done_something
)
10415 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10419 if (!is_ppc64_elf (ibfd
))
10422 got
= ppc64_elf_tdata (ibfd
)->got
;
10425 done_something
= got
->rawsize
!= got
->size
;
10426 if (done_something
)
10431 if (done_something
)
10432 (*htab
->layout_sections_again
) ();
10434 /* Set up for second pass over toc sections to recalculate elf_gp
10435 on input sections. */
10436 htab
->toc_bfd
= NULL
;
10437 htab
->toc_first_sec
= NULL
;
10438 htab
->second_toc_pass
= TRUE
;
10439 return done_something
;
10442 /* Called after second pass of multitoc partitioning. */
10445 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10447 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10449 /* After the second pass, toc_curr tracks the TOC offset used
10450 for code sections below in ppc64_elf_next_input_section. */
10451 htab
->toc_curr
= TOC_BASE_OFF
;
10454 /* No toc references were found in ISEC. If the code in ISEC makes no
10455 calls, then there's no need to use toc adjusting stubs when branching
10456 into ISEC. Actually, indirect calls from ISEC are OK as they will
10457 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10458 needed, and 2 if a cyclical call-graph was found but no other reason
10459 for a stub was detected. If called from the top level, a return of
10460 2 means the same as a return of 0. */
10463 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10467 /* Mark this section as checked. */
10468 isec
->call_check_done
= 1;
10470 /* We know none of our code bearing sections will need toc stubs. */
10471 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10474 if (isec
->size
== 0)
10477 if (isec
->output_section
== NULL
)
10481 if (isec
->reloc_count
!= 0)
10483 Elf_Internal_Rela
*relstart
, *rel
;
10484 Elf_Internal_Sym
*local_syms
;
10485 struct ppc_link_hash_table
*htab
;
10487 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10488 info
->keep_memory
);
10489 if (relstart
== NULL
)
10492 /* Look for branches to outside of this section. */
10494 htab
= ppc_hash_table (info
);
10498 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10500 enum elf_ppc64_reloc_type r_type
;
10501 unsigned long r_symndx
;
10502 struct elf_link_hash_entry
*h
;
10503 struct ppc_link_hash_entry
*eh
;
10504 Elf_Internal_Sym
*sym
;
10506 struct _opd_sec_data
*opd
;
10510 r_type
= ELF64_R_TYPE (rel
->r_info
);
10511 if (r_type
!= R_PPC64_REL24
10512 && r_type
!= R_PPC64_REL14
10513 && r_type
!= R_PPC64_REL14_BRTAKEN
10514 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10517 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10518 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10525 /* Calls to dynamic lib functions go through a plt call stub
10527 eh
= (struct ppc_link_hash_entry
*) h
;
10529 && (eh
->elf
.plt
.plist
!= NULL
10531 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10537 if (sym_sec
== NULL
)
10538 /* Ignore other undefined symbols. */
10541 /* Assume branches to other sections not included in the
10542 link need stubs too, to cover -R and absolute syms. */
10543 if (sym_sec
->output_section
== NULL
)
10550 sym_value
= sym
->st_value
;
10553 if (h
->root
.type
!= bfd_link_hash_defined
10554 && h
->root
.type
!= bfd_link_hash_defweak
)
10556 sym_value
= h
->root
.u
.def
.value
;
10558 sym_value
+= rel
->r_addend
;
10560 /* If this branch reloc uses an opd sym, find the code section. */
10561 opd
= get_opd_info (sym_sec
);
10564 if (h
== NULL
&& opd
->adjust
!= NULL
)
10568 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10570 /* Assume deleted functions won't ever be called. */
10572 sym_value
+= adjust
;
10575 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10576 if (dest
== (bfd_vma
) -1)
10581 + sym_sec
->output_offset
10582 + sym_sec
->output_section
->vma
);
10584 /* Ignore branch to self. */
10585 if (sym_sec
== isec
)
10588 /* If the called function uses the toc, we need a stub. */
10589 if (sym_sec
->has_toc_reloc
10590 || sym_sec
->makes_toc_func_call
)
10596 /* Assume any branch that needs a long branch stub might in fact
10597 need a plt_branch stub. A plt_branch stub uses r2. */
10598 else if (dest
- (isec
->output_offset
10599 + isec
->output_section
->vma
10600 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10606 /* If calling back to a section in the process of being
10607 tested, we can't say for sure that no toc adjusting stubs
10608 are needed, so don't return zero. */
10609 else if (sym_sec
->call_check_in_progress
)
10612 /* Branches to another section that itself doesn't have any TOC
10613 references are OK. Recursively call ourselves to check. */
10614 else if (!sym_sec
->call_check_done
)
10618 /* Mark current section as indeterminate, so that other
10619 sections that call back to current won't be marked as
10621 isec
->call_check_in_progress
= 1;
10622 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10623 isec
->call_check_in_progress
= 0;
10634 if (local_syms
!= NULL
10635 && (elf_symtab_hdr (isec
->owner
).contents
10636 != (unsigned char *) local_syms
))
10638 if (elf_section_data (isec
)->relocs
!= relstart
)
10643 && isec
->map_head
.s
!= NULL
10644 && (strcmp (isec
->output_section
->name
, ".init") == 0
10645 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10647 if (isec
->map_head
.s
->has_toc_reloc
10648 || isec
->map_head
.s
->makes_toc_func_call
)
10650 else if (!isec
->map_head
.s
->call_check_done
)
10653 isec
->call_check_in_progress
= 1;
10654 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10655 isec
->call_check_in_progress
= 0;
10662 isec
->makes_toc_func_call
= 1;
10667 /* The linker repeatedly calls this function for each input section,
10668 in the order that input sections are linked into output sections.
10669 Build lists of input sections to determine groupings between which
10670 we may insert linker stubs. */
10673 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10675 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10680 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10681 && isec
->output_section
->index
<= htab
->top_index
)
10683 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10684 /* Steal the link_sec pointer for our list. */
10685 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10686 /* This happens to make the list in reverse order,
10687 which is what we want. */
10688 PREV_SEC (isec
) = *list
;
10692 if (htab
->multi_toc_needed
)
10694 /* If a code section has a function that uses the TOC then we need
10695 to use the right TOC (obviously). Also, make sure that .opd gets
10696 the correct TOC value for R_PPC64_TOC relocs that don't have or
10697 can't find their function symbol (shouldn't ever happen now).
10698 Also specially treat .fixup for the linux kernel. .fixup
10699 contains branches, but only back to the function that hit an
10701 if (isec
->has_toc_reloc
10702 || (isec
->flags
& SEC_CODE
) == 0
10703 || strcmp (isec
->name
, ".fixup") == 0)
10705 if (elf_gp (isec
->owner
) != 0)
10706 htab
->toc_curr
= elf_gp (isec
->owner
);
10710 if (!isec
->call_check_done
10711 && toc_adjusting_stub_needed (info
, isec
) < 0)
10713 /* If we make a local call from this section, ie. a branch
10714 without a following nop, then we have no place to put a
10715 toc restoring insn. We must use the same toc group as
10717 Testing makes_toc_func_call actually tests for *any*
10718 calls to functions that need a good toc pointer. A more
10719 precise test would be better, as this one will set
10720 incorrect values for pasted .init/.fini fragments.
10721 (Fixed later in check_pasted_section.) */
10722 if (isec
->makes_toc_func_call
10723 && elf_gp (isec
->owner
) != 0)
10724 htab
->toc_curr
= elf_gp (isec
->owner
);
10728 /* Functions that don't use the TOC can belong in any TOC group.
10729 Use the last TOC base. */
10730 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10734 /* Check that all .init and .fini sections use the same toc, if they
10735 have toc relocs. */
10738 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10740 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10744 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10745 bfd_vma toc_off
= 0;
10748 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10749 if (i
->has_toc_reloc
)
10752 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10753 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10758 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10759 if (i
->makes_toc_func_call
)
10761 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10765 /* Make sure the whole pasted function uses the same toc offset. */
10767 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10768 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10774 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10776 return (check_pasted_section (info
, ".init")
10777 & check_pasted_section (info
, ".fini"));
10780 /* See whether we can group stub sections together. Grouping stub
10781 sections may result in fewer stubs. More importantly, we need to
10782 put all .init* and .fini* stubs at the beginning of the .init or
10783 .fini output sections respectively, because glibc splits the
10784 _init and _fini functions into multiple parts. Putting a stub in
10785 the middle of a function is not a good idea. */
10788 group_sections (struct ppc_link_hash_table
*htab
,
10789 bfd_size_type stub_group_size
,
10790 bfd_boolean stubs_always_before_branch
)
10793 bfd_size_type stub14_group_size
;
10794 bfd_boolean suppress_size_errors
;
10796 suppress_size_errors
= FALSE
;
10797 stub14_group_size
= stub_group_size
;
10798 if (stub_group_size
== 1)
10800 /* Default values. */
10801 if (stubs_always_before_branch
)
10803 stub_group_size
= 0x1e00000;
10804 stub14_group_size
= 0x7800;
10808 stub_group_size
= 0x1c00000;
10809 stub14_group_size
= 0x7000;
10811 suppress_size_errors
= TRUE
;
10814 list
= htab
->input_list
+ htab
->top_index
;
10817 asection
*tail
= *list
;
10818 while (tail
!= NULL
)
10822 bfd_size_type total
;
10823 bfd_boolean big_sec
;
10827 total
= tail
->size
;
10828 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10829 && ppc64_elf_section_data (tail
)->has_14bit_branch
10830 ? stub14_group_size
: stub_group_size
);
10831 if (big_sec
&& !suppress_size_errors
)
10832 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10833 tail
->owner
, tail
);
10834 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10836 while ((prev
= PREV_SEC (curr
)) != NULL
10837 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10838 < (ppc64_elf_section_data (prev
) != NULL
10839 && ppc64_elf_section_data (prev
)->has_14bit_branch
10840 ? stub14_group_size
: stub_group_size
))
10841 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10844 /* OK, the size from the start of CURR to the end is less
10845 than stub_group_size and thus can be handled by one stub
10846 section. (or the tail section is itself larger than
10847 stub_group_size, in which case we may be toast.) We
10848 should really be keeping track of the total size of stubs
10849 added here, as stubs contribute to the final output
10850 section size. That's a little tricky, and this way will
10851 only break if stubs added make the total size more than
10852 2^25, ie. for the default stub_group_size, if stubs total
10853 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10856 prev
= PREV_SEC (tail
);
10857 /* Set up this stub group. */
10858 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10860 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10862 /* But wait, there's more! Input sections up to stub_group_size
10863 bytes before the stub section can be handled by it too.
10864 Don't do this if we have a really large section after the
10865 stubs, as adding more stubs increases the chance that
10866 branches may not reach into the stub section. */
10867 if (!stubs_always_before_branch
&& !big_sec
)
10870 while (prev
!= NULL
10871 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10872 < (ppc64_elf_section_data (prev
) != NULL
10873 && ppc64_elf_section_data (prev
)->has_14bit_branch
10874 ? stub14_group_size
: stub_group_size
))
10875 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10878 prev
= PREV_SEC (tail
);
10879 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10885 while (list
-- != htab
->input_list
);
10886 free (htab
->input_list
);
10890 /* Determine and set the size of the stub section for a final link.
10892 The basic idea here is to examine all the relocations looking for
10893 PC-relative calls to a target that is unreachable with a "bl"
10897 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10899 bfd_size_type stub_group_size
;
10900 bfd_boolean stubs_always_before_branch
;
10901 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10906 stubs_always_before_branch
= group_size
< 0;
10907 if (group_size
< 0)
10908 stub_group_size
= -group_size
;
10910 stub_group_size
= group_size
;
10912 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10917 unsigned int bfd_indx
;
10918 asection
*stub_sec
;
10920 htab
->stub_iteration
+= 1;
10922 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10924 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10926 Elf_Internal_Shdr
*symtab_hdr
;
10928 Elf_Internal_Sym
*local_syms
= NULL
;
10930 if (!is_ppc64_elf (input_bfd
))
10933 /* We'll need the symbol table in a second. */
10934 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10935 if (symtab_hdr
->sh_info
== 0)
10938 /* Walk over each section attached to the input bfd. */
10939 for (section
= input_bfd
->sections
;
10941 section
= section
->next
)
10943 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10945 /* If there aren't any relocs, then there's nothing more
10947 if ((section
->flags
& SEC_RELOC
) == 0
10948 || (section
->flags
& SEC_ALLOC
) == 0
10949 || (section
->flags
& SEC_LOAD
) == 0
10950 || (section
->flags
& SEC_CODE
) == 0
10951 || section
->reloc_count
== 0)
10954 /* If this section is a link-once section that will be
10955 discarded, then don't create any stubs. */
10956 if (section
->output_section
== NULL
10957 || section
->output_section
->owner
!= info
->output_bfd
)
10960 /* Get the relocs. */
10962 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10963 info
->keep_memory
);
10964 if (internal_relocs
== NULL
)
10965 goto error_ret_free_local
;
10967 /* Now examine each relocation. */
10968 irela
= internal_relocs
;
10969 irelaend
= irela
+ section
->reloc_count
;
10970 for (; irela
< irelaend
; irela
++)
10972 enum elf_ppc64_reloc_type r_type
;
10973 unsigned int r_indx
;
10974 enum ppc_stub_type stub_type
;
10975 struct ppc_stub_hash_entry
*stub_entry
;
10976 asection
*sym_sec
, *code_sec
;
10977 bfd_vma sym_value
, code_value
;
10978 bfd_vma destination
;
10979 bfd_boolean ok_dest
;
10980 struct ppc_link_hash_entry
*hash
;
10981 struct ppc_link_hash_entry
*fdh
;
10982 struct elf_link_hash_entry
*h
;
10983 Elf_Internal_Sym
*sym
;
10985 const asection
*id_sec
;
10986 struct _opd_sec_data
*opd
;
10987 struct plt_entry
*plt_ent
;
10989 r_type
= ELF64_R_TYPE (irela
->r_info
);
10990 r_indx
= ELF64_R_SYM (irela
->r_info
);
10992 if (r_type
>= R_PPC64_max
)
10994 bfd_set_error (bfd_error_bad_value
);
10995 goto error_ret_free_internal
;
10998 /* Only look for stubs on branch instructions. */
10999 if (r_type
!= R_PPC64_REL24
11000 && r_type
!= R_PPC64_REL14
11001 && r_type
!= R_PPC64_REL14_BRTAKEN
11002 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11005 /* Now determine the call target, its name, value,
11007 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
11008 r_indx
, input_bfd
))
11009 goto error_ret_free_internal
;
11010 hash
= (struct ppc_link_hash_entry
*) h
;
11017 sym_value
= sym
->st_value
;
11020 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
11021 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
11023 sym_value
= hash
->elf
.root
.u
.def
.value
;
11024 if (sym_sec
->output_section
!= NULL
)
11027 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
11028 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
11030 /* Recognise an old ABI func code entry sym, and
11031 use the func descriptor sym instead if it is
11033 if (hash
->elf
.root
.root
.string
[0] == '.'
11034 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
11036 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
11037 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
11039 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
11040 sym_value
= fdh
->elf
.root
.u
.def
.value
;
11041 if (sym_sec
->output_section
!= NULL
)
11050 bfd_set_error (bfd_error_bad_value
);
11051 goto error_ret_free_internal
;
11057 sym_value
+= irela
->r_addend
;
11058 destination
= (sym_value
11059 + sym_sec
->output_offset
11060 + sym_sec
->output_section
->vma
);
11063 code_sec
= sym_sec
;
11064 code_value
= sym_value
;
11065 opd
= get_opd_info (sym_sec
);
11070 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11072 long adjust
= opd
->adjust
[sym_value
/ 8];
11075 code_value
+= adjust
;
11076 sym_value
+= adjust
;
11078 dest
= opd_entry_value (sym_sec
, sym_value
,
11079 &code_sec
, &code_value
);
11080 if (dest
!= (bfd_vma
) -1)
11082 destination
= dest
;
11085 /* Fixup old ABI sym to point at code
11087 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11088 hash
->elf
.root
.u
.def
.section
= code_sec
;
11089 hash
->elf
.root
.u
.def
.value
= code_value
;
11094 /* Determine what (if any) linker stub is needed. */
11096 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11097 &plt_ent
, destination
);
11099 if (stub_type
!= ppc_stub_plt_call
)
11101 /* Check whether we need a TOC adjusting stub.
11102 Since the linker pastes together pieces from
11103 different object files when creating the
11104 _init and _fini functions, it may be that a
11105 call to what looks like a local sym is in
11106 fact a call needing a TOC adjustment. */
11107 if (code_sec
!= NULL
11108 && code_sec
->output_section
!= NULL
11109 && (htab
->stub_group
[code_sec
->id
].toc_off
11110 != htab
->stub_group
[section
->id
].toc_off
)
11111 && (code_sec
->has_toc_reloc
11112 || code_sec
->makes_toc_func_call
))
11113 stub_type
= ppc_stub_long_branch_r2off
;
11116 if (stub_type
== ppc_stub_none
)
11119 /* __tls_get_addr calls might be eliminated. */
11120 if (stub_type
!= ppc_stub_plt_call
11122 && (hash
== htab
->tls_get_addr
11123 || hash
== htab
->tls_get_addr_fd
)
11124 && section
->has_tls_reloc
11125 && irela
!= internal_relocs
)
11127 /* Get tls info. */
11128 unsigned char *tls_mask
;
11130 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11131 irela
- 1, input_bfd
))
11132 goto error_ret_free_internal
;
11133 if (*tls_mask
!= 0)
11137 /* Support for grouping stub sections. */
11138 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11140 /* Get the name of this stub. */
11141 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11143 goto error_ret_free_internal
;
11145 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11146 stub_name
, FALSE
, FALSE
);
11147 if (stub_entry
!= NULL
)
11149 /* The proper stub has already been created. */
11154 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
11155 if (stub_entry
== NULL
)
11158 error_ret_free_internal
:
11159 if (elf_section_data (section
)->relocs
== NULL
)
11160 free (internal_relocs
);
11161 error_ret_free_local
:
11162 if (local_syms
!= NULL
11163 && (symtab_hdr
->contents
11164 != (unsigned char *) local_syms
))
11169 stub_entry
->stub_type
= stub_type
;
11170 if (stub_type
!= ppc_stub_plt_call
)
11172 stub_entry
->target_value
= code_value
;
11173 stub_entry
->target_section
= code_sec
;
11177 stub_entry
->target_value
= sym_value
;
11178 stub_entry
->target_section
= sym_sec
;
11180 stub_entry
->h
= hash
;
11181 stub_entry
->plt_ent
= plt_ent
;
11182 stub_entry
->addend
= irela
->r_addend
;
11184 if (stub_entry
->h
!= NULL
)
11185 htab
->stub_globals
+= 1;
11188 /* We're done with the internal relocs, free them. */
11189 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11190 free (internal_relocs
);
11193 if (local_syms
!= NULL
11194 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11196 if (!info
->keep_memory
)
11199 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11203 /* We may have added some stubs. Find out the new size of the
11205 for (stub_sec
= htab
->stub_bfd
->sections
;
11207 stub_sec
= stub_sec
->next
)
11208 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11210 stub_sec
->rawsize
= stub_sec
->size
;
11211 stub_sec
->size
= 0;
11212 stub_sec
->reloc_count
= 0;
11213 stub_sec
->flags
&= ~SEC_RELOC
;
11216 htab
->brlt
->size
= 0;
11217 htab
->brlt
->reloc_count
= 0;
11218 htab
->brlt
->flags
&= ~SEC_RELOC
;
11219 if (htab
->relbrlt
!= NULL
)
11220 htab
->relbrlt
->size
= 0;
11222 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11224 if (info
->emitrelocations
11225 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11227 htab
->glink
->reloc_count
= 1;
11228 htab
->glink
->flags
|= SEC_RELOC
;
11231 for (stub_sec
= htab
->stub_bfd
->sections
;
11233 stub_sec
= stub_sec
->next
)
11234 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11235 && stub_sec
->rawsize
!= stub_sec
->size
)
11238 /* Exit from this loop when no stubs have been added, and no stubs
11239 have changed size. */
11240 if (stub_sec
== NULL
)
11243 /* Ask the linker to do its stuff. */
11244 (*htab
->layout_sections_again
) ();
11247 /* It would be nice to strip htab->brlt from the output if the
11248 section is empty, but it's too late. If we strip sections here,
11249 the dynamic symbol table is corrupted since the section symbol
11250 for the stripped section isn't written. */
11255 /* Called after we have determined section placement. If sections
11256 move, we'll be called again. Provide a value for TOCstart. */
11259 ppc64_elf_toc (bfd
*obfd
)
11264 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11265 order. The TOC starts where the first of these sections starts. */
11266 s
= bfd_get_section_by_name (obfd
, ".got");
11267 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11268 s
= bfd_get_section_by_name (obfd
, ".toc");
11269 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11270 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11271 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11272 s
= bfd_get_section_by_name (obfd
, ".plt");
11273 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11275 /* This may happen for
11276 o references to TOC base (SYM@toc / TOC[tc0]) without a
11278 o bad linker script
11279 o --gc-sections and empty TOC sections
11281 FIXME: Warn user? */
11283 /* Look for a likely section. We probably won't even be
11285 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11286 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11288 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11291 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11292 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11293 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11296 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11297 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11301 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11302 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11308 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11313 /* Build all the stubs associated with the current output file.
11314 The stubs are kept in a hash table attached to the main linker
11315 hash table. This function is called via gldelf64ppc_finish. */
11318 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11319 struct bfd_link_info
*info
,
11322 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11323 asection
*stub_sec
;
11325 int stub_sec_count
= 0;
11330 htab
->emit_stub_syms
= emit_stub_syms
;
11332 /* Allocate memory to hold the linker stubs. */
11333 for (stub_sec
= htab
->stub_bfd
->sections
;
11335 stub_sec
= stub_sec
->next
)
11336 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11337 && stub_sec
->size
!= 0)
11339 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11340 if (stub_sec
->contents
== NULL
)
11342 /* We want to check that built size is the same as calculated
11343 size. rawsize is a convenient location to use. */
11344 stub_sec
->rawsize
= stub_sec
->size
;
11345 stub_sec
->size
= 0;
11348 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11353 /* Build the .glink plt call stub. */
11354 if (htab
->emit_stub_syms
)
11356 struct elf_link_hash_entry
*h
;
11357 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11358 TRUE
, FALSE
, FALSE
);
11361 if (h
->root
.type
== bfd_link_hash_new
)
11363 h
->root
.type
= bfd_link_hash_defined
;
11364 h
->root
.u
.def
.section
= htab
->glink
;
11365 h
->root
.u
.def
.value
= 8;
11366 h
->ref_regular
= 1;
11367 h
->def_regular
= 1;
11368 h
->ref_regular_nonweak
= 1;
11369 h
->forced_local
= 1;
11373 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11374 if (info
->emitrelocations
)
11376 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11379 r
->r_offset
= (htab
->glink
->output_offset
11380 + htab
->glink
->output_section
->vma
);
11381 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11382 r
->r_addend
= plt0
;
11384 p
= htab
->glink
->contents
;
11385 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11386 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11388 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11390 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11392 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11394 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11396 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11398 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11400 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11402 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11404 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11406 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11408 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11410 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11412 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11416 /* Build the .glink lazy link call stubs. */
11418 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11422 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11427 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11429 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11432 bfd_put_32 (htab
->glink
->owner
,
11433 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11437 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11440 if (htab
->brlt
->size
!= 0)
11442 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11444 if (htab
->brlt
->contents
== NULL
)
11447 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11449 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11450 htab
->relbrlt
->size
);
11451 if (htab
->relbrlt
->contents
== NULL
)
11455 /* Build the stubs as directed by the stub hash table. */
11456 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11458 if (htab
->relbrlt
!= NULL
)
11459 htab
->relbrlt
->reloc_count
= 0;
11461 for (stub_sec
= htab
->stub_bfd
->sections
;
11463 stub_sec
= stub_sec
->next
)
11464 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11466 stub_sec_count
+= 1;
11467 if (stub_sec
->rawsize
!= stub_sec
->size
)
11471 if (stub_sec
!= NULL
11472 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11474 htab
->stub_error
= TRUE
;
11475 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11478 if (htab
->stub_error
)
11483 *stats
= bfd_malloc (500);
11484 if (*stats
== NULL
)
11487 sprintf (*stats
, _("linker stubs in %u group%s\n"
11489 " toc adjust %lu\n"
11490 " long branch %lu\n"
11491 " long toc adj %lu\n"
11494 stub_sec_count
== 1 ? "" : "s",
11495 htab
->stub_count
[ppc_stub_long_branch
- 1],
11496 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11497 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11498 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11499 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11504 /* This function undoes the changes made by add_symbol_adjust. */
11507 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11509 struct ppc_link_hash_entry
*eh
;
11511 if (h
->root
.type
== bfd_link_hash_indirect
)
11514 if (h
->root
.type
== bfd_link_hash_warning
)
11515 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11517 eh
= (struct ppc_link_hash_entry
*) h
;
11518 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11521 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11526 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11528 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11531 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11534 /* What to do when ld finds relocations against symbols defined in
11535 discarded sections. */
11537 static unsigned int
11538 ppc64_elf_action_discarded (asection
*sec
)
11540 if (strcmp (".opd", sec
->name
) == 0)
11543 if (strcmp (".toc", sec
->name
) == 0)
11546 if (strcmp (".toc1", sec
->name
) == 0)
11549 return _bfd_elf_default_action_discarded (sec
);
11552 /* REL points to a low-part reloc on a largetoc instruction sequence.
11553 Find the matching high-part reloc instruction and verify that it
11554 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11555 the high-part reloc. */
11557 static const Elf_Internal_Rela
*
11558 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11559 const Elf_Internal_Rela
*rel
,
11561 bfd_boolean match_addend
,
11562 const bfd
*input_bfd
,
11563 const bfd_byte
*contents
)
11565 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11566 bfd_vma r_info_ha
, r_addend
;
11568 r_type
= ELF64_R_TYPE (rel
->r_info
);
11571 case R_PPC64_GOT_TLSLD16_LO
:
11572 case R_PPC64_GOT_TLSGD16_LO
:
11573 case R_PPC64_GOT_TPREL16_LO_DS
:
11574 case R_PPC64_GOT_DTPREL16_LO_DS
:
11575 case R_PPC64_GOT16_LO
:
11576 case R_PPC64_TOC16_LO
:
11577 r_type_ha
= r_type
+ 2;
11579 case R_PPC64_GOT16_LO_DS
:
11580 r_type_ha
= R_PPC64_GOT16_HA
;
11582 case R_PPC64_TOC16_LO_DS
:
11583 r_type_ha
= R_PPC64_TOC16_HA
;
11588 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11589 r_addend
= rel
->r_addend
;
11591 while (--rel
>= relocs
)
11592 if (rel
->r_info
== r_info_ha
11594 || rel
->r_addend
== r_addend
))
11596 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11597 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11598 if ((insn
& (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11599 && (insn
& (0x1f << 21)) == (*reg
<< 21))
11601 *reg
= (insn
>> 16) & 0x1f;
11609 /* The RELOCATE_SECTION function is called by the ELF backend linker
11610 to handle the relocations for a section.
11612 The relocs are always passed as Rela structures; if the section
11613 actually uses Rel structures, the r_addend field will always be
11616 This function is responsible for adjust the section contents as
11617 necessary, and (if using Rela relocs and generating a
11618 relocatable output file) adjusting the reloc addend as
11621 This function does not have to worry about setting the reloc
11622 address or the reloc symbol index.
11624 LOCAL_SYMS is a pointer to the swapped in local symbols.
11626 LOCAL_SECTIONS is an array giving the section in the input file
11627 corresponding to the st_shndx field of each local symbol.
11629 The global hash table entry for the global symbols can be found
11630 via elf_sym_hashes (input_bfd).
11632 When generating relocatable output, this function must handle
11633 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11634 going to be the section symbol corresponding to the output
11635 section, which means that the addend must be adjusted
11639 ppc64_elf_relocate_section (bfd
*output_bfd
,
11640 struct bfd_link_info
*info
,
11642 asection
*input_section
,
11643 bfd_byte
*contents
,
11644 Elf_Internal_Rela
*relocs
,
11645 Elf_Internal_Sym
*local_syms
,
11646 asection
**local_sections
)
11648 struct ppc_link_hash_table
*htab
;
11649 Elf_Internal_Shdr
*symtab_hdr
;
11650 struct elf_link_hash_entry
**sym_hashes
;
11651 Elf_Internal_Rela
*rel
;
11652 Elf_Internal_Rela
*relend
;
11653 Elf_Internal_Rela outrel
;
11655 struct got_entry
**local_got_ents
;
11656 unsigned char *ha_opt
;
11658 bfd_boolean no_ha_opt
;
11659 bfd_boolean ret
= TRUE
;
11660 bfd_boolean is_opd
;
11661 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11662 bfd_boolean is_power4
= FALSE
;
11663 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11665 /* Initialize howto table if needed. */
11666 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11669 htab
= ppc_hash_table (info
);
11673 /* Don't relocate stub sections. */
11674 if (input_section
->owner
== htab
->stub_bfd
)
11677 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11679 local_got_ents
= elf_local_got_ents (input_bfd
);
11680 TOCstart
= elf_gp (output_bfd
);
11681 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11682 sym_hashes
= elf_sym_hashes (input_bfd
);
11683 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11688 relend
= relocs
+ input_section
->reloc_count
;
11689 for (; rel
< relend
; rel
++)
11691 enum elf_ppc64_reloc_type r_type
;
11692 bfd_vma addend
, orig_addend
;
11693 bfd_reloc_status_type r
;
11694 Elf_Internal_Sym
*sym
;
11696 struct elf_link_hash_entry
*h_elf
;
11697 struct ppc_link_hash_entry
*h
;
11698 struct ppc_link_hash_entry
*fdh
;
11699 const char *sym_name
;
11700 unsigned long r_symndx
, toc_symndx
;
11701 bfd_vma toc_addend
;
11702 unsigned char tls_mask
, tls_gd
, tls_type
;
11703 unsigned char sym_type
;
11704 bfd_vma relocation
;
11705 bfd_boolean unresolved_reloc
;
11706 bfd_boolean warned
;
11709 struct ppc_stub_hash_entry
*stub_entry
;
11710 bfd_vma max_br_offset
;
11713 r_type
= ELF64_R_TYPE (rel
->r_info
);
11714 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11716 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11717 symbol of the previous ADDR64 reloc. The symbol gives us the
11718 proper TOC base to use. */
11719 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11721 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11723 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11729 unresolved_reloc
= FALSE
;
11731 orig_addend
= rel
->r_addend
;
11733 if (r_symndx
< symtab_hdr
->sh_info
)
11735 /* It's a local symbol. */
11736 struct _opd_sec_data
*opd
;
11738 sym
= local_syms
+ r_symndx
;
11739 sec
= local_sections
[r_symndx
];
11740 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11741 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11742 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11743 opd
= get_opd_info (sec
);
11744 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11746 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11751 /* If this is a relocation against the opd section sym
11752 and we have edited .opd, adjust the reloc addend so
11753 that ld -r and ld --emit-relocs output is correct.
11754 If it is a reloc against some other .opd symbol,
11755 then the symbol value will be adjusted later. */
11756 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11757 rel
->r_addend
+= adjust
;
11759 relocation
+= adjust
;
11765 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11766 r_symndx
, symtab_hdr
, sym_hashes
,
11767 h_elf
, sec
, relocation
,
11768 unresolved_reloc
, warned
);
11769 sym_name
= h_elf
->root
.root
.string
;
11770 sym_type
= h_elf
->type
;
11772 h
= (struct ppc_link_hash_entry
*) h_elf
;
11774 if (sec
!= NULL
&& elf_discarded_section (sec
))
11775 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
11777 ppc64_elf_howto_table
[r_type
],
11780 if (info
->relocatable
)
11783 /* TLS optimizations. Replace instruction sequences and relocs
11784 based on information we collected in tls_optimize. We edit
11785 RELOCS so that --emit-relocs will output something sensible
11786 for the final instruction stream. */
11791 tls_mask
= h
->tls_mask
;
11792 else if (local_got_ents
!= NULL
)
11794 struct plt_entry
**local_plt
= (struct plt_entry
**)
11795 (local_got_ents
+ symtab_hdr
->sh_info
);
11796 unsigned char *lgot_masks
= (unsigned char *)
11797 (local_plt
+ symtab_hdr
->sh_info
);
11798 tls_mask
= lgot_masks
[r_symndx
];
11801 && (r_type
== R_PPC64_TLS
11802 || r_type
== R_PPC64_TLSGD
11803 || r_type
== R_PPC64_TLSLD
))
11805 /* Check for toc tls entries. */
11806 unsigned char *toc_tls
;
11808 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11809 &local_syms
, rel
, input_bfd
))
11813 tls_mask
= *toc_tls
;
11816 /* Check that tls relocs are used with tls syms, and non-tls
11817 relocs are used with non-tls syms. */
11818 if (r_symndx
!= STN_UNDEF
11819 && r_type
!= R_PPC64_NONE
11821 || h
->elf
.root
.type
== bfd_link_hash_defined
11822 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11823 && (IS_PPC64_TLS_RELOC (r_type
)
11824 != (sym_type
== STT_TLS
11825 || (sym_type
== STT_SECTION
11826 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11829 && (r_type
== R_PPC64_TLS
11830 || r_type
== R_PPC64_TLSGD
11831 || r_type
== R_PPC64_TLSLD
))
11832 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11835 (*_bfd_error_handler
)
11836 (!IS_PPC64_TLS_RELOC (r_type
)
11837 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11838 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11841 (long) rel
->r_offset
,
11842 ppc64_elf_howto_table
[r_type
]->name
,
11846 /* Ensure reloc mapping code below stays sane. */
11847 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11848 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11849 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11850 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11851 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11852 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11853 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11854 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11855 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11856 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11864 case R_PPC64_LO_DS_OPT
:
11865 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11866 if ((insn
& (0x3f << 26)) != 58u << 26)
11868 insn
+= (14u << 26) - (58u << 26);
11869 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11870 r_type
= R_PPC64_TOC16_LO
;
11871 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11874 case R_PPC64_TOC16
:
11875 case R_PPC64_TOC16_LO
:
11876 case R_PPC64_TOC16_DS
:
11877 case R_PPC64_TOC16_LO_DS
:
11879 /* Check for toc tls entries. */
11880 unsigned char *toc_tls
;
11883 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11884 &local_syms
, rel
, input_bfd
);
11890 tls_mask
= *toc_tls
;
11891 if (r_type
== R_PPC64_TOC16_DS
11892 || r_type
== R_PPC64_TOC16_LO_DS
)
11895 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11900 /* If we found a GD reloc pair, then we might be
11901 doing a GD->IE transition. */
11904 tls_gd
= TLS_TPRELGD
;
11905 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11908 else if (retval
== 3)
11910 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11918 case R_PPC64_GOT_TPREL16_HI
:
11919 case R_PPC64_GOT_TPREL16_HA
:
11921 && (tls_mask
& TLS_TPREL
) == 0)
11923 rel
->r_offset
-= d_offset
;
11924 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11925 r_type
= R_PPC64_NONE
;
11926 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11930 case R_PPC64_GOT_TPREL16_DS
:
11931 case R_PPC64_GOT_TPREL16_LO_DS
:
11933 && (tls_mask
& TLS_TPREL
) == 0)
11936 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11938 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11939 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11940 r_type
= R_PPC64_TPREL16_HA
;
11941 if (toc_symndx
!= 0)
11943 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11944 rel
->r_addend
= toc_addend
;
11945 /* We changed the symbol. Start over in order to
11946 get h, sym, sec etc. right. */
11951 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11957 && (tls_mask
& TLS_TPREL
) == 0)
11959 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11960 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11963 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11964 /* Was PPC64_TLS which sits on insn boundary, now
11965 PPC64_TPREL16_LO which is at low-order half-word. */
11966 rel
->r_offset
+= d_offset
;
11967 r_type
= R_PPC64_TPREL16_LO
;
11968 if (toc_symndx
!= 0)
11970 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11971 rel
->r_addend
= toc_addend
;
11972 /* We changed the symbol. Start over in order to
11973 get h, sym, sec etc. right. */
11978 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11982 case R_PPC64_GOT_TLSGD16_HI
:
11983 case R_PPC64_GOT_TLSGD16_HA
:
11984 tls_gd
= TLS_TPRELGD
;
11985 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11989 case R_PPC64_GOT_TLSLD16_HI
:
11990 case R_PPC64_GOT_TLSLD16_HA
:
11991 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11994 if ((tls_mask
& tls_gd
) != 0)
11995 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11996 + R_PPC64_GOT_TPREL16_DS
);
11999 rel
->r_offset
-= d_offset
;
12000 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12001 r_type
= R_PPC64_NONE
;
12003 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12007 case R_PPC64_GOT_TLSGD16
:
12008 case R_PPC64_GOT_TLSGD16_LO
:
12009 tls_gd
= TLS_TPRELGD
;
12010 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12014 case R_PPC64_GOT_TLSLD16
:
12015 case R_PPC64_GOT_TLSLD16_LO
:
12016 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12018 unsigned int insn1
, insn2
, insn3
;
12022 offset
= (bfd_vma
) -1;
12023 /* If not using the newer R_PPC64_TLSGD/LD to mark
12024 __tls_get_addr calls, we must trust that the call
12025 stays with its arg setup insns, ie. that the next
12026 reloc is the __tls_get_addr call associated with
12027 the current reloc. Edit both insns. */
12028 if (input_section
->has_tls_get_addr_call
12029 && rel
+ 1 < relend
12030 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
12031 htab
->tls_get_addr
,
12032 htab
->tls_get_addr_fd
))
12033 offset
= rel
[1].r_offset
;
12034 if ((tls_mask
& tls_gd
) != 0)
12037 insn1
= bfd_get_32 (output_bfd
,
12038 contents
+ rel
->r_offset
- d_offset
);
12039 insn1
&= (1 << 26) - (1 << 2);
12040 insn1
|= 58 << 26; /* ld */
12041 insn2
= 0x7c636a14; /* add 3,3,13 */
12042 if (offset
!= (bfd_vma
) -1)
12043 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12044 if ((tls_mask
& TLS_EXPLICIT
) == 0)
12045 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12046 + R_PPC64_GOT_TPREL16_DS
);
12048 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
12049 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12054 insn1
= 0x3c6d0000; /* addis 3,13,0 */
12055 insn2
= 0x38630000; /* addi 3,3,0 */
12058 /* Was an LD reloc. */
12060 sec
= local_sections
[toc_symndx
];
12062 r_symndx
< symtab_hdr
->sh_info
;
12064 if (local_sections
[r_symndx
] == sec
)
12066 if (r_symndx
>= symtab_hdr
->sh_info
)
12067 r_symndx
= STN_UNDEF
;
12068 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12069 if (r_symndx
!= STN_UNDEF
)
12070 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12071 + sec
->output_offset
12072 + sec
->output_section
->vma
);
12074 else if (toc_symndx
!= 0)
12076 r_symndx
= toc_symndx
;
12077 rel
->r_addend
= toc_addend
;
12079 r_type
= R_PPC64_TPREL16_HA
;
12080 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12081 if (offset
!= (bfd_vma
) -1)
12083 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12084 R_PPC64_TPREL16_LO
);
12085 rel
[1].r_offset
= offset
+ d_offset
;
12086 rel
[1].r_addend
= rel
->r_addend
;
12089 bfd_put_32 (output_bfd
, insn1
,
12090 contents
+ rel
->r_offset
- d_offset
);
12091 if (offset
!= (bfd_vma
) -1)
12093 insn3
= bfd_get_32 (output_bfd
,
12094 contents
+ offset
+ 4);
12096 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12098 rel
[1].r_offset
+= 4;
12099 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12102 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12104 if ((tls_mask
& tls_gd
) == 0
12105 && (tls_gd
== 0 || toc_symndx
!= 0))
12107 /* We changed the symbol. Start over in order
12108 to get h, sym, sec etc. right. */
12115 case R_PPC64_TLSGD
:
12116 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12118 unsigned int insn2
, insn3
;
12119 bfd_vma offset
= rel
->r_offset
;
12121 if ((tls_mask
& TLS_TPRELGD
) != 0)
12124 r_type
= R_PPC64_NONE
;
12125 insn2
= 0x7c636a14; /* add 3,3,13 */
12130 if (toc_symndx
!= 0)
12132 r_symndx
= toc_symndx
;
12133 rel
->r_addend
= toc_addend
;
12135 r_type
= R_PPC64_TPREL16_LO
;
12136 rel
->r_offset
= offset
+ d_offset
;
12137 insn2
= 0x38630000; /* addi 3,3,0 */
12139 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12140 /* Zap the reloc on the _tls_get_addr call too. */
12141 BFD_ASSERT (offset
== rel
[1].r_offset
);
12142 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12143 insn3
= bfd_get_32 (output_bfd
,
12144 contents
+ offset
+ 4);
12146 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12148 rel
->r_offset
+= 4;
12149 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12152 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12153 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12161 case R_PPC64_TLSLD
:
12162 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12164 unsigned int insn2
, insn3
;
12165 bfd_vma offset
= rel
->r_offset
;
12168 sec
= local_sections
[toc_symndx
];
12170 r_symndx
< symtab_hdr
->sh_info
;
12172 if (local_sections
[r_symndx
] == sec
)
12174 if (r_symndx
>= symtab_hdr
->sh_info
)
12175 r_symndx
= STN_UNDEF
;
12176 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12177 if (r_symndx
!= STN_UNDEF
)
12178 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12179 + sec
->output_offset
12180 + sec
->output_section
->vma
);
12182 r_type
= R_PPC64_TPREL16_LO
;
12183 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12184 rel
->r_offset
= offset
+ d_offset
;
12185 /* Zap the reloc on the _tls_get_addr call too. */
12186 BFD_ASSERT (offset
== rel
[1].r_offset
);
12187 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12188 insn2
= 0x38630000; /* addi 3,3,0 */
12189 insn3
= bfd_get_32 (output_bfd
,
12190 contents
+ offset
+ 4);
12192 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12194 rel
->r_offset
+= 4;
12195 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12198 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12204 case R_PPC64_DTPMOD64
:
12205 if (rel
+ 1 < relend
12206 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12207 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12209 if ((tls_mask
& TLS_GD
) == 0)
12211 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12212 if ((tls_mask
& TLS_TPRELGD
) != 0)
12213 r_type
= R_PPC64_TPREL64
;
12216 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12217 r_type
= R_PPC64_NONE
;
12219 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12224 if ((tls_mask
& TLS_LD
) == 0)
12226 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12227 r_type
= R_PPC64_NONE
;
12228 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12233 case R_PPC64_TPREL64
:
12234 if ((tls_mask
& TLS_TPREL
) == 0)
12236 r_type
= R_PPC64_NONE
;
12237 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12242 /* Handle other relocations that tweak non-addend part of insn. */
12244 max_br_offset
= 1 << 25;
12245 addend
= rel
->r_addend
;
12251 /* Branch taken prediction relocations. */
12252 case R_PPC64_ADDR14_BRTAKEN
:
12253 case R_PPC64_REL14_BRTAKEN
:
12254 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12257 /* Branch not taken prediction relocations. */
12258 case R_PPC64_ADDR14_BRNTAKEN
:
12259 case R_PPC64_REL14_BRNTAKEN
:
12260 insn
|= bfd_get_32 (output_bfd
,
12261 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12264 case R_PPC64_REL14
:
12265 max_br_offset
= 1 << 15;
12268 case R_PPC64_REL24
:
12269 /* Calls to functions with a different TOC, such as calls to
12270 shared objects, need to alter the TOC pointer. This is
12271 done using a linkage stub. A REL24 branching to these
12272 linkage stubs needs to be followed by a nop, as the nop
12273 will be replaced with an instruction to restore the TOC
12278 && h
->oh
->is_func_descriptor
)
12279 fdh
= ppc_follow_link (h
->oh
);
12280 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12281 if (stub_entry
!= NULL
12282 && (stub_entry
->stub_type
== ppc_stub_plt_call
12283 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12284 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12286 bfd_boolean can_plt_call
= FALSE
;
12288 if (rel
->r_offset
+ 8 <= input_section
->size
)
12291 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12293 || nop
== CROR_151515
|| nop
== CROR_313131
)
12296 && (h
== htab
->tls_get_addr_fd
12297 || h
== htab
->tls_get_addr
)
12298 && !htab
->no_tls_get_addr_opt
)
12300 /* Special stub used, leave nop alone. */
12303 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12304 contents
+ rel
->r_offset
+ 4);
12305 can_plt_call
= TRUE
;
12311 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12313 /* If this is a plain branch rather than a branch
12314 and link, don't require a nop. However, don't
12315 allow tail calls in a shared library as they
12316 will result in r2 being corrupted. */
12318 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12319 if (info
->executable
&& (br
& 1) == 0)
12320 can_plt_call
= TRUE
;
12325 && strcmp (h
->elf
.root
.root
.string
,
12326 ".__libc_start_main") == 0)
12328 /* Allow crt1 branch to go via a toc adjusting stub. */
12329 can_plt_call
= TRUE
;
12333 if (strcmp (input_section
->output_section
->name
,
12335 || strcmp (input_section
->output_section
->name
,
12337 (*_bfd_error_handler
)
12338 (_("%B(%A+0x%lx): automatic multiple TOCs "
12339 "not supported using your crt files; "
12340 "recompile with -mminimal-toc or upgrade gcc"),
12343 (long) rel
->r_offset
);
12345 (*_bfd_error_handler
)
12346 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12347 "does not allow automatic multiple TOCs; "
12348 "recompile with -mminimal-toc or "
12349 "-fno-optimize-sibling-calls, "
12350 "or make `%s' extern"),
12353 (long) rel
->r_offset
,
12356 bfd_set_error (bfd_error_bad_value
);
12362 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12363 unresolved_reloc
= FALSE
;
12366 if ((stub_entry
== NULL
12367 || stub_entry
->stub_type
== ppc_stub_long_branch
12368 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12369 && get_opd_info (sec
) != NULL
)
12371 /* The branch destination is the value of the opd entry. */
12372 bfd_vma off
= (relocation
+ addend
12373 - sec
->output_section
->vma
12374 - sec
->output_offset
);
12375 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12376 if (dest
!= (bfd_vma
) -1)
12383 /* If the branch is out of reach we ought to have a long
12385 from
= (rel
->r_offset
12386 + input_section
->output_offset
12387 + input_section
->output_section
->vma
);
12389 if (stub_entry
!= NULL
12390 && (stub_entry
->stub_type
== ppc_stub_long_branch
12391 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12392 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12393 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12394 || (relocation
+ addend
- from
+ max_br_offset
12395 < 2 * max_br_offset
)))
12396 /* Don't use the stub if this branch is in range. */
12399 if (stub_entry
!= NULL
)
12401 /* Munge up the value and addend so that we call the stub
12402 rather than the procedure directly. */
12403 relocation
= (stub_entry
->stub_offset
12404 + stub_entry
->stub_sec
->output_offset
12405 + stub_entry
->stub_sec
->output_section
->vma
);
12413 /* Set 'a' bit. This is 0b00010 in BO field for branch
12414 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12415 for branch on CTR insns (BO == 1a00t or 1a01t). */
12416 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12417 insn
|= 0x02 << 21;
12418 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12419 insn
|= 0x08 << 21;
12425 /* Invert 'y' bit if not the default. */
12426 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12427 insn
^= 0x01 << 21;
12430 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12433 /* NOP out calls to undefined weak functions.
12434 We can thus call a weak function without first
12435 checking whether the function is defined. */
12437 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12438 && h
->elf
.dynindx
== -1
12439 && r_type
== R_PPC64_REL24
12443 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12449 /* Set `addend'. */
12454 (*_bfd_error_handler
)
12455 (_("%B: unknown relocation type %d for symbol %s"),
12456 input_bfd
, (int) r_type
, sym_name
);
12458 bfd_set_error (bfd_error_bad_value
);
12464 case R_PPC64_TLSGD
:
12465 case R_PPC64_TLSLD
:
12466 case R_PPC64_GNU_VTINHERIT
:
12467 case R_PPC64_GNU_VTENTRY
:
12470 /* GOT16 relocations. Like an ADDR16 using the symbol's
12471 address in the GOT as relocation value instead of the
12472 symbol's value itself. Also, create a GOT entry for the
12473 symbol and put the symbol value there. */
12474 case R_PPC64_GOT_TLSGD16
:
12475 case R_PPC64_GOT_TLSGD16_LO
:
12476 case R_PPC64_GOT_TLSGD16_HI
:
12477 case R_PPC64_GOT_TLSGD16_HA
:
12478 tls_type
= TLS_TLS
| TLS_GD
;
12481 case R_PPC64_GOT_TLSLD16
:
12482 case R_PPC64_GOT_TLSLD16_LO
:
12483 case R_PPC64_GOT_TLSLD16_HI
:
12484 case R_PPC64_GOT_TLSLD16_HA
:
12485 tls_type
= TLS_TLS
| TLS_LD
;
12488 case R_PPC64_GOT_TPREL16_DS
:
12489 case R_PPC64_GOT_TPREL16_LO_DS
:
12490 case R_PPC64_GOT_TPREL16_HI
:
12491 case R_PPC64_GOT_TPREL16_HA
:
12492 tls_type
= TLS_TLS
| TLS_TPREL
;
12495 case R_PPC64_GOT_DTPREL16_DS
:
12496 case R_PPC64_GOT_DTPREL16_LO_DS
:
12497 case R_PPC64_GOT_DTPREL16_HI
:
12498 case R_PPC64_GOT_DTPREL16_HA
:
12499 tls_type
= TLS_TLS
| TLS_DTPREL
;
12502 case R_PPC64_GOT16
:
12503 case R_PPC64_GOT16_LO
:
12504 case R_PPC64_GOT16_HI
:
12505 case R_PPC64_GOT16_HA
:
12506 case R_PPC64_GOT16_DS
:
12507 case R_PPC64_GOT16_LO_DS
:
12510 /* Relocation is to the entry for this symbol in the global
12515 unsigned long indx
= 0;
12516 struct got_entry
*ent
;
12518 if (tls_type
== (TLS_TLS
| TLS_LD
)
12520 || !h
->elf
.def_dynamic
))
12521 ent
= ppc64_tlsld_got (input_bfd
);
12527 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12528 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12531 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12532 /* This is actually a static link, or it is a
12533 -Bsymbolic link and the symbol is defined
12534 locally, or the symbol was forced to be local
12535 because of a version file. */
12539 indx
= h
->elf
.dynindx
;
12540 unresolved_reloc
= FALSE
;
12542 ent
= h
->elf
.got
.glist
;
12546 if (local_got_ents
== NULL
)
12548 ent
= local_got_ents
[r_symndx
];
12551 for (; ent
!= NULL
; ent
= ent
->next
)
12552 if (ent
->addend
== orig_addend
12553 && ent
->owner
== input_bfd
12554 && ent
->tls_type
== tls_type
)
12560 if (ent
->is_indirect
)
12561 ent
= ent
->got
.ent
;
12562 offp
= &ent
->got
.offset
;
12563 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12567 /* The offset must always be a multiple of 8. We use the
12568 least significant bit to record whether we have already
12569 processed this entry. */
12571 if ((off
& 1) != 0)
12575 /* Generate relocs for the dynamic linker, except in
12576 the case of TLSLD where we'll use one entry per
12584 ? h
->elf
.type
== STT_GNU_IFUNC
12585 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12586 if ((info
->shared
|| indx
!= 0)
12588 || (tls_type
== (TLS_TLS
| TLS_LD
)
12589 && !h
->elf
.def_dynamic
)
12590 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12591 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12592 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12594 relgot
= htab
->reliplt
;
12595 if (relgot
!= NULL
)
12597 outrel
.r_offset
= (got
->output_section
->vma
12598 + got
->output_offset
12600 outrel
.r_addend
= addend
;
12601 if (tls_type
& (TLS_LD
| TLS_GD
))
12603 outrel
.r_addend
= 0;
12604 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12605 if (tls_type
== (TLS_TLS
| TLS_GD
))
12607 loc
= relgot
->contents
;
12608 loc
+= (relgot
->reloc_count
++
12609 * sizeof (Elf64_External_Rela
));
12610 bfd_elf64_swap_reloca_out (output_bfd
,
12612 outrel
.r_offset
+= 8;
12613 outrel
.r_addend
= addend
;
12615 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12618 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12619 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12620 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12621 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12622 else if (indx
!= 0)
12623 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12627 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12629 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12631 /* Write the .got section contents for the sake
12633 loc
= got
->contents
+ off
;
12634 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12638 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12640 outrel
.r_addend
+= relocation
;
12641 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12642 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12644 loc
= relgot
->contents
;
12645 loc
+= (relgot
->reloc_count
++
12646 * sizeof (Elf64_External_Rela
));
12647 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12650 /* Init the .got section contents here if we're not
12651 emitting a reloc. */
12654 relocation
+= addend
;
12655 if (tls_type
== (TLS_TLS
| TLS_LD
))
12657 else if (tls_type
!= 0)
12659 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12660 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12661 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12663 if (tls_type
== (TLS_TLS
| TLS_GD
))
12665 bfd_put_64 (output_bfd
, relocation
,
12666 got
->contents
+ off
+ 8);
12671 bfd_put_64 (output_bfd
, relocation
,
12672 got
->contents
+ off
);
12676 if (off
>= (bfd_vma
) -2)
12679 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12680 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12684 case R_PPC64_PLT16_HA
:
12685 case R_PPC64_PLT16_HI
:
12686 case R_PPC64_PLT16_LO
:
12687 case R_PPC64_PLT32
:
12688 case R_PPC64_PLT64
:
12689 /* Relocation is to the entry for this symbol in the
12690 procedure linkage table. */
12692 /* Resolve a PLT reloc against a local symbol directly,
12693 without using the procedure linkage table. */
12697 /* It's possible that we didn't make a PLT entry for this
12698 symbol. This happens when statically linking PIC code,
12699 or when using -Bsymbolic. Go find a match if there is a
12701 if (htab
->plt
!= NULL
)
12703 struct plt_entry
*ent
;
12704 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12705 if (ent
->addend
== orig_addend
12706 && ent
->plt
.offset
!= (bfd_vma
) -1)
12708 relocation
= (htab
->plt
->output_section
->vma
12709 + htab
->plt
->output_offset
12710 + ent
->plt
.offset
);
12711 unresolved_reloc
= FALSE
;
12717 /* Relocation value is TOC base. */
12718 relocation
= TOCstart
;
12719 if (r_symndx
== STN_UNDEF
)
12720 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12721 else if (unresolved_reloc
)
12723 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12724 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12726 unresolved_reloc
= TRUE
;
12729 /* TOC16 relocs. We want the offset relative to the TOC base,
12730 which is the address of the start of the TOC plus 0x8000.
12731 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12733 case R_PPC64_TOC16
:
12734 case R_PPC64_TOC16_LO
:
12735 case R_PPC64_TOC16_HI
:
12736 case R_PPC64_TOC16_DS
:
12737 case R_PPC64_TOC16_LO_DS
:
12738 case R_PPC64_TOC16_HA
:
12739 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12742 /* Relocate against the beginning of the section. */
12743 case R_PPC64_SECTOFF
:
12744 case R_PPC64_SECTOFF_LO
:
12745 case R_PPC64_SECTOFF_HI
:
12746 case R_PPC64_SECTOFF_DS
:
12747 case R_PPC64_SECTOFF_LO_DS
:
12748 case R_PPC64_SECTOFF_HA
:
12750 addend
-= sec
->output_section
->vma
;
12753 case R_PPC64_REL16
:
12754 case R_PPC64_REL16_LO
:
12755 case R_PPC64_REL16_HI
:
12756 case R_PPC64_REL16_HA
:
12759 case R_PPC64_REL14
:
12760 case R_PPC64_REL14_BRNTAKEN
:
12761 case R_PPC64_REL14_BRTAKEN
:
12762 case R_PPC64_REL24
:
12765 case R_PPC64_TPREL16
:
12766 case R_PPC64_TPREL16_LO
:
12767 case R_PPC64_TPREL16_HI
:
12768 case R_PPC64_TPREL16_HA
:
12769 case R_PPC64_TPREL16_DS
:
12770 case R_PPC64_TPREL16_LO_DS
:
12771 case R_PPC64_TPREL16_HIGHER
:
12772 case R_PPC64_TPREL16_HIGHERA
:
12773 case R_PPC64_TPREL16_HIGHEST
:
12774 case R_PPC64_TPREL16_HIGHESTA
:
12776 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12777 && h
->elf
.dynindx
== -1)
12779 /* Make this relocation against an undefined weak symbol
12780 resolve to zero. This is really just a tweak, since
12781 code using weak externs ought to check that they are
12782 defined before using them. */
12783 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12785 insn
= bfd_get_32 (output_bfd
, p
);
12786 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12788 bfd_put_32 (output_bfd
, insn
, p
);
12791 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12793 /* The TPREL16 relocs shouldn't really be used in shared
12794 libs as they will result in DT_TEXTREL being set, but
12795 support them anyway. */
12799 case R_PPC64_DTPREL16
:
12800 case R_PPC64_DTPREL16_LO
:
12801 case R_PPC64_DTPREL16_HI
:
12802 case R_PPC64_DTPREL16_HA
:
12803 case R_PPC64_DTPREL16_DS
:
12804 case R_PPC64_DTPREL16_LO_DS
:
12805 case R_PPC64_DTPREL16_HIGHER
:
12806 case R_PPC64_DTPREL16_HIGHERA
:
12807 case R_PPC64_DTPREL16_HIGHEST
:
12808 case R_PPC64_DTPREL16_HIGHESTA
:
12809 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12812 case R_PPC64_DTPMOD64
:
12817 case R_PPC64_TPREL64
:
12818 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12821 case R_PPC64_DTPREL64
:
12822 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12825 /* Relocations that may need to be propagated if this is a
12827 case R_PPC64_REL30
:
12828 case R_PPC64_REL32
:
12829 case R_PPC64_REL64
:
12830 case R_PPC64_ADDR14
:
12831 case R_PPC64_ADDR14_BRNTAKEN
:
12832 case R_PPC64_ADDR14_BRTAKEN
:
12833 case R_PPC64_ADDR16
:
12834 case R_PPC64_ADDR16_DS
:
12835 case R_PPC64_ADDR16_HA
:
12836 case R_PPC64_ADDR16_HI
:
12837 case R_PPC64_ADDR16_HIGHER
:
12838 case R_PPC64_ADDR16_HIGHERA
:
12839 case R_PPC64_ADDR16_HIGHEST
:
12840 case R_PPC64_ADDR16_HIGHESTA
:
12841 case R_PPC64_ADDR16_LO
:
12842 case R_PPC64_ADDR16_LO_DS
:
12843 case R_PPC64_ADDR24
:
12844 case R_PPC64_ADDR32
:
12845 case R_PPC64_ADDR64
:
12846 case R_PPC64_UADDR16
:
12847 case R_PPC64_UADDR32
:
12848 case R_PPC64_UADDR64
:
12850 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12853 if (NO_OPD_RELOCS
&& is_opd
)
12858 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12859 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12860 && (must_be_dyn_reloc (info
, r_type
)
12861 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12862 || (ELIMINATE_COPY_RELOCS
12865 && h
->elf
.dynindx
!= -1
12866 && !h
->elf
.non_got_ref
12867 && !h
->elf
.def_regular
)
12870 ? h
->elf
.type
== STT_GNU_IFUNC
12871 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12873 bfd_boolean skip
, relocate
;
12877 /* When generating a dynamic object, these relocations
12878 are copied into the output file to be resolved at run
12884 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12885 input_section
, rel
->r_offset
);
12886 if (out_off
== (bfd_vma
) -1)
12888 else if (out_off
== (bfd_vma
) -2)
12889 skip
= TRUE
, relocate
= TRUE
;
12890 out_off
+= (input_section
->output_section
->vma
12891 + input_section
->output_offset
);
12892 outrel
.r_offset
= out_off
;
12893 outrel
.r_addend
= rel
->r_addend
;
12895 /* Optimize unaligned reloc use. */
12896 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12897 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12898 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12899 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12900 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12901 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12902 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12903 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12904 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12907 memset (&outrel
, 0, sizeof outrel
);
12908 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
12910 && r_type
!= R_PPC64_TOC
)
12911 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12914 /* This symbol is local, or marked to become local,
12915 or this is an opd section reloc which must point
12916 at a local function. */
12917 outrel
.r_addend
+= relocation
;
12918 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12920 if (is_opd
&& h
!= NULL
)
12922 /* Lie about opd entries. This case occurs
12923 when building shared libraries and we
12924 reference a function in another shared
12925 lib. The same thing happens for a weak
12926 definition in an application that's
12927 overridden by a strong definition in a
12928 shared lib. (I believe this is a generic
12929 bug in binutils handling of weak syms.)
12930 In these cases we won't use the opd
12931 entry in this lib. */
12932 unresolved_reloc
= FALSE
;
12935 && r_type
== R_PPC64_ADDR64
12937 ? h
->elf
.type
== STT_GNU_IFUNC
12938 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12939 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12942 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12944 /* We need to relocate .opd contents for ld.so.
12945 Prelink also wants simple and consistent rules
12946 for relocs. This make all RELATIVE relocs have
12947 *r_offset equal to r_addend. */
12956 ? h
->elf
.type
== STT_GNU_IFUNC
12957 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12959 (*_bfd_error_handler
)
12960 (_("%B(%A+0x%lx): relocation %s for indirect "
12961 "function %s unsupported"),
12964 (long) rel
->r_offset
,
12965 ppc64_elf_howto_table
[r_type
]->name
,
12969 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
12971 else if (sec
== NULL
|| sec
->owner
== NULL
)
12973 bfd_set_error (bfd_error_bad_value
);
12980 osec
= sec
->output_section
;
12981 indx
= elf_section_data (osec
)->dynindx
;
12985 if ((osec
->flags
& SEC_READONLY
) == 0
12986 && htab
->elf
.data_index_section
!= NULL
)
12987 osec
= htab
->elf
.data_index_section
;
12989 osec
= htab
->elf
.text_index_section
;
12990 indx
= elf_section_data (osec
)->dynindx
;
12992 BFD_ASSERT (indx
!= 0);
12994 /* We are turning this relocation into one
12995 against a section symbol, so subtract out
12996 the output section's address but not the
12997 offset of the input section in the output
12999 outrel
.r_addend
-= osec
->vma
;
13002 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
13006 sreloc
= elf_section_data (input_section
)->sreloc
;
13007 if (!htab
->elf
.dynamic_sections_created
)
13008 sreloc
= htab
->reliplt
;
13009 if (sreloc
== NULL
)
13012 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
13015 loc
= sreloc
->contents
;
13016 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13017 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13019 /* If this reloc is against an external symbol, it will
13020 be computed at runtime, so there's no need to do
13021 anything now. However, for the sake of prelink ensure
13022 that the section contents are a known value. */
13025 unresolved_reloc
= FALSE
;
13026 /* The value chosen here is quite arbitrary as ld.so
13027 ignores section contents except for the special
13028 case of .opd where the contents might be accessed
13029 before relocation. Choose zero, as that won't
13030 cause reloc overflow. */
13033 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13034 to improve backward compatibility with older
13036 if (r_type
== R_PPC64_ADDR64
)
13037 addend
= outrel
.r_addend
;
13038 /* Adjust pc_relative relocs to have zero in *r_offset. */
13039 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
13040 addend
= (input_section
->output_section
->vma
13041 + input_section
->output_offset
13048 case R_PPC64_GLOB_DAT
:
13049 case R_PPC64_JMP_SLOT
:
13050 case R_PPC64_JMP_IREL
:
13051 case R_PPC64_RELATIVE
:
13052 /* We shouldn't ever see these dynamic relocs in relocatable
13054 /* Fall through. */
13056 case R_PPC64_PLTGOT16
:
13057 case R_PPC64_PLTGOT16_DS
:
13058 case R_PPC64_PLTGOT16_HA
:
13059 case R_PPC64_PLTGOT16_HI
:
13060 case R_PPC64_PLTGOT16_LO
:
13061 case R_PPC64_PLTGOT16_LO_DS
:
13062 case R_PPC64_PLTREL32
:
13063 case R_PPC64_PLTREL64
:
13064 /* These ones haven't been implemented yet. */
13066 (*_bfd_error_handler
)
13067 (_("%B: relocation %s is not supported for symbol %s."),
13069 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
13071 bfd_set_error (bfd_error_invalid_operation
);
13076 /* Multi-instruction sequences that access the TOC can be
13077 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13078 to nop; addi rb,r2,x; */
13084 case R_PPC64_GOT_TLSLD16_HI
:
13085 case R_PPC64_GOT_TLSGD16_HI
:
13086 case R_PPC64_GOT_TPREL16_HI
:
13087 case R_PPC64_GOT_DTPREL16_HI
:
13088 case R_PPC64_GOT16_HI
:
13089 case R_PPC64_TOC16_HI
:
13090 /* These relocs would only be useful if building up an
13091 offset to later add to r2, perhaps in an indexed
13092 addressing mode instruction. Don't try to optimize.
13093 Unfortunately, the possibility of someone building up an
13094 offset like this or even with the HA relocs, means that
13095 we need to check the high insn when optimizing the low
13099 case R_PPC64_GOT_TLSLD16_HA
:
13100 case R_PPC64_GOT_TLSGD16_HA
:
13101 case R_PPC64_GOT_TPREL16_HA
:
13102 case R_PPC64_GOT_DTPREL16_HA
:
13103 case R_PPC64_GOT16_HA
:
13104 case R_PPC64_TOC16_HA
:
13105 /* nop is done later. */
13108 case R_PPC64_GOT_TLSLD16_LO
:
13109 case R_PPC64_GOT_TLSGD16_LO
:
13110 case R_PPC64_GOT_TPREL16_LO_DS
:
13111 case R_PPC64_GOT_DTPREL16_LO_DS
:
13112 case R_PPC64_GOT16_LO
:
13113 case R_PPC64_GOT16_LO_DS
:
13114 case R_PPC64_TOC16_LO
:
13115 case R_PPC64_TOC16_LO_DS
:
13116 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
13118 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13119 insn
= bfd_get_32 (input_bfd
, p
);
13120 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
13121 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
13122 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
13123 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
13124 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
13125 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
13126 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
13127 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
13128 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
13129 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
13130 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
13131 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
13132 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
13133 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
13134 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13135 && (insn
& 3) != 1)
13136 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
13137 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
13139 unsigned int reg
= (insn
>> 16) & 0x1f;
13140 const Elf_Internal_Rela
*ha
;
13141 bfd_boolean match_addend
;
13143 match_addend
= (sym
!= NULL
13144 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
13145 ha
= ha_reloc_match (relocs
, rel
, ®
, match_addend
,
13146 input_bfd
, contents
);
13149 insn
&= ~(0x1f << 16);
13151 bfd_put_32 (input_bfd
, insn
, p
);
13152 if (ha_opt
== NULL
)
13154 ha_opt
= bfd_zmalloc (input_section
->reloc_count
);
13155 if (ha_opt
== NULL
)
13158 ha_opt
[ha
- relocs
] = 1;
13161 /* If we don't find a matching high part insn,
13162 something is fishy. Refuse to nop any high
13163 part insn in this section. */
13170 /* Do any further special processing. */
13176 case R_PPC64_ADDR16_HA
:
13177 case R_PPC64_REL16_HA
:
13178 case R_PPC64_ADDR16_HIGHERA
:
13179 case R_PPC64_ADDR16_HIGHESTA
:
13180 case R_PPC64_TOC16_HA
:
13181 case R_PPC64_SECTOFF_HA
:
13182 case R_PPC64_TPREL16_HA
:
13183 case R_PPC64_DTPREL16_HA
:
13184 case R_PPC64_TPREL16_HIGHER
:
13185 case R_PPC64_TPREL16_HIGHERA
:
13186 case R_PPC64_TPREL16_HIGHEST
:
13187 case R_PPC64_TPREL16_HIGHESTA
:
13188 case R_PPC64_DTPREL16_HIGHER
:
13189 case R_PPC64_DTPREL16_HIGHERA
:
13190 case R_PPC64_DTPREL16_HIGHEST
:
13191 case R_PPC64_DTPREL16_HIGHESTA
:
13192 /* It's just possible that this symbol is a weak symbol
13193 that's not actually defined anywhere. In that case,
13194 'sec' would be NULL, and we should leave the symbol
13195 alone (it will be set to zero elsewhere in the link). */
13200 case R_PPC64_GOT16_HA
:
13201 case R_PPC64_PLTGOT16_HA
:
13202 case R_PPC64_PLT16_HA
:
13203 case R_PPC64_GOT_TLSGD16_HA
:
13204 case R_PPC64_GOT_TLSLD16_HA
:
13205 case R_PPC64_GOT_TPREL16_HA
:
13206 case R_PPC64_GOT_DTPREL16_HA
:
13207 /* Add 0x10000 if sign bit in 0:15 is set.
13208 Bits 0:15 are not used. */
13212 case R_PPC64_ADDR16_DS
:
13213 case R_PPC64_ADDR16_LO_DS
:
13214 case R_PPC64_GOT16_DS
:
13215 case R_PPC64_GOT16_LO_DS
:
13216 case R_PPC64_PLT16_LO_DS
:
13217 case R_PPC64_SECTOFF_DS
:
13218 case R_PPC64_SECTOFF_LO_DS
:
13219 case R_PPC64_TOC16_DS
:
13220 case R_PPC64_TOC16_LO_DS
:
13221 case R_PPC64_PLTGOT16_DS
:
13222 case R_PPC64_PLTGOT16_LO_DS
:
13223 case R_PPC64_GOT_TPREL16_DS
:
13224 case R_PPC64_GOT_TPREL16_LO_DS
:
13225 case R_PPC64_GOT_DTPREL16_DS
:
13226 case R_PPC64_GOT_DTPREL16_LO_DS
:
13227 case R_PPC64_TPREL16_DS
:
13228 case R_PPC64_TPREL16_LO_DS
:
13229 case R_PPC64_DTPREL16_DS
:
13230 case R_PPC64_DTPREL16_LO_DS
:
13231 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13233 /* If this reloc is against an lq insn, then the value must be
13234 a multiple of 16. This is somewhat of a hack, but the
13235 "correct" way to do this by defining _DQ forms of all the
13236 _DS relocs bloats all reloc switches in this file. It
13237 doesn't seem to make much sense to use any of these relocs
13238 in data, so testing the insn should be safe. */
13239 if ((insn
& (0x3f << 26)) == (56u << 26))
13241 if (((relocation
+ addend
) & mask
) != 0)
13243 (*_bfd_error_handler
)
13244 (_("%B(%A+0x%lx): error: %s not a multiple of %u"),
13245 input_bfd
, input_section
, (long) rel
->r_offset
,
13246 ppc64_elf_howto_table
[r_type
]->name
,
13248 bfd_set_error (bfd_error_bad_value
);
13255 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13256 because such sections are not SEC_ALLOC and thus ld.so will
13257 not process them. */
13258 if (unresolved_reloc
13259 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13260 && h
->elf
.def_dynamic
))
13262 (*_bfd_error_handler
)
13263 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13266 (long) rel
->r_offset
,
13267 ppc64_elf_howto_table
[(int) r_type
]->name
,
13268 h
->elf
.root
.root
.string
);
13272 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13280 if (r
!= bfd_reloc_ok
)
13282 if (sym_name
== NULL
)
13283 sym_name
= "(null)";
13284 if (r
== bfd_reloc_overflow
)
13289 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13290 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13292 /* Assume this is a call protected by other code that
13293 detects the symbol is undefined. If this is the case,
13294 we can safely ignore the overflow. If not, the
13295 program is hosed anyway, and a little warning isn't
13301 if (!((*info
->callbacks
->reloc_overflow
)
13302 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13303 ppc64_elf_howto_table
[r_type
]->name
,
13304 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13309 (*_bfd_error_handler
)
13310 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13313 (long) rel
->r_offset
,
13314 ppc64_elf_howto_table
[r_type
]->name
,
13322 if (ha_opt
!= NULL
)
13326 unsigned char *opt
= ha_opt
;
13328 relend
= relocs
+ input_section
->reloc_count
;
13329 for (; rel
< relend
; opt
++, rel
++)
13332 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13333 bfd_put_32 (input_bfd
, NOP
, p
);
13339 /* If we're emitting relocations, then shortly after this function
13340 returns, reloc offsets and addends for this section will be
13341 adjusted. Worse, reloc symbol indices will be for the output
13342 file rather than the input. Save a copy of the relocs for
13343 opd_entry_value. */
13344 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13347 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13348 rel
= bfd_alloc (input_bfd
, amt
);
13349 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13350 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13353 memcpy (rel
, relocs
, amt
);
13358 /* Adjust the value of any local symbols in opd sections. */
13361 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13362 const char *name ATTRIBUTE_UNUSED
,
13363 Elf_Internal_Sym
*elfsym
,
13364 asection
*input_sec
,
13365 struct elf_link_hash_entry
*h
)
13367 struct _opd_sec_data
*opd
;
13374 opd
= get_opd_info (input_sec
);
13375 if (opd
== NULL
|| opd
->adjust
== NULL
)
13378 value
= elfsym
->st_value
- input_sec
->output_offset
;
13379 if (!info
->relocatable
)
13380 value
-= input_sec
->output_section
->vma
;
13382 adjust
= opd
->adjust
[value
/ 8];
13386 elfsym
->st_value
+= adjust
;
13390 /* Finish up dynamic symbol handling. We set the contents of various
13391 dynamic sections here. */
13394 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13395 struct bfd_link_info
*info
,
13396 struct elf_link_hash_entry
*h
,
13397 Elf_Internal_Sym
*sym
)
13399 struct ppc_link_hash_table
*htab
;
13400 struct plt_entry
*ent
;
13401 Elf_Internal_Rela rela
;
13404 htab
= ppc_hash_table (info
);
13408 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13409 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13411 /* This symbol has an entry in the procedure linkage
13412 table. Set it up. */
13413 if (!htab
->elf
.dynamic_sections_created
13414 || h
->dynindx
== -1)
13416 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13418 && (h
->root
.type
== bfd_link_hash_defined
13419 || h
->root
.type
== bfd_link_hash_defweak
));
13420 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13421 + htab
->iplt
->output_offset
13422 + ent
->plt
.offset
);
13423 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13424 rela
.r_addend
= (h
->root
.u
.def
.value
13425 + h
->root
.u
.def
.section
->output_offset
13426 + h
->root
.u
.def
.section
->output_section
->vma
13428 loc
= (htab
->reliplt
->contents
13429 + (htab
->reliplt
->reloc_count
++
13430 * sizeof (Elf64_External_Rela
)));
13434 rela
.r_offset
= (htab
->plt
->output_section
->vma
13435 + htab
->plt
->output_offset
13436 + ent
->plt
.offset
);
13437 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13438 rela
.r_addend
= ent
->addend
;
13439 loc
= (htab
->relplt
->contents
13440 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13441 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13443 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13448 /* This symbol needs a copy reloc. Set it up. */
13450 if (h
->dynindx
== -1
13451 || (h
->root
.type
!= bfd_link_hash_defined
13452 && h
->root
.type
!= bfd_link_hash_defweak
)
13453 || htab
->relbss
== NULL
)
13456 rela
.r_offset
= (h
->root
.u
.def
.value
13457 + h
->root
.u
.def
.section
->output_section
->vma
13458 + h
->root
.u
.def
.section
->output_offset
);
13459 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13461 loc
= htab
->relbss
->contents
;
13462 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13463 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13466 /* Mark some specially defined symbols as absolute. */
13467 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13468 sym
->st_shndx
= SHN_ABS
;
13473 /* Used to decide how to sort relocs in an optimal manner for the
13474 dynamic linker, before writing them out. */
13476 static enum elf_reloc_type_class
13477 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13479 enum elf_ppc64_reloc_type r_type
;
13481 r_type
= ELF64_R_TYPE (rela
->r_info
);
13484 case R_PPC64_RELATIVE
:
13485 return reloc_class_relative
;
13486 case R_PPC64_JMP_SLOT
:
13487 return reloc_class_plt
;
13489 return reloc_class_copy
;
13491 return reloc_class_normal
;
13495 /* Finish up the dynamic sections. */
13498 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13499 struct bfd_link_info
*info
)
13501 struct ppc_link_hash_table
*htab
;
13505 htab
= ppc_hash_table (info
);
13509 dynobj
= htab
->elf
.dynobj
;
13510 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13512 if (htab
->elf
.dynamic_sections_created
)
13514 Elf64_External_Dyn
*dyncon
, *dynconend
;
13516 if (sdyn
== NULL
|| htab
->got
== NULL
)
13519 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13520 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13521 for (; dyncon
< dynconend
; dyncon
++)
13523 Elf_Internal_Dyn dyn
;
13526 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13533 case DT_PPC64_GLINK
:
13535 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13536 /* We stupidly defined DT_PPC64_GLINK to be the start
13537 of glink rather than the first entry point, which is
13538 what ld.so needs, and now have a bigger stub to
13539 support automatic multiple TOCs. */
13540 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13544 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13547 dyn
.d_un
.d_ptr
= s
->vma
;
13550 case DT_PPC64_OPDSZ
:
13551 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13554 dyn
.d_un
.d_val
= s
->size
;
13559 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13564 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13568 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13572 /* Don't count procedure linkage table relocs in the
13573 overall reloc count. */
13577 dyn
.d_un
.d_val
-= s
->size
;
13581 /* We may not be using the standard ELF linker script.
13582 If .rela.plt is the first .rela section, we adjust
13583 DT_RELA to not include it. */
13587 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13589 dyn
.d_un
.d_ptr
+= s
->size
;
13593 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13597 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13599 /* Fill in the first entry in the global offset table.
13600 We use it to hold the link-time TOCbase. */
13601 bfd_put_64 (output_bfd
,
13602 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13603 htab
->got
->contents
);
13605 /* Set .got entry size. */
13606 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13609 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13611 /* Set .plt entry size. */
13612 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13616 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13617 brlt ourselves if emitrelocations. */
13618 if (htab
->brlt
!= NULL
13619 && htab
->brlt
->reloc_count
!= 0
13620 && !_bfd_elf_link_output_relocs (output_bfd
,
13622 elf_section_data (htab
->brlt
)->rela
.hdr
,
13623 elf_section_data (htab
->brlt
)->relocs
,
13627 if (htab
->glink
!= NULL
13628 && htab
->glink
->reloc_count
!= 0
13629 && !_bfd_elf_link_output_relocs (output_bfd
,
13631 elf_section_data (htab
->glink
)->rela
.hdr
,
13632 elf_section_data (htab
->glink
)->relocs
,
13636 /* We need to handle writing out multiple GOT sections ourselves,
13637 since we didn't add them to DYNOBJ. We know dynobj is the first
13639 while ((dynobj
= dynobj
->link_next
) != NULL
)
13643 if (!is_ppc64_elf (dynobj
))
13646 s
= ppc64_elf_tdata (dynobj
)->got
;
13649 && s
->output_section
!= bfd_abs_section_ptr
13650 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13651 s
->contents
, s
->output_offset
,
13654 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13657 && s
->output_section
!= bfd_abs_section_ptr
13658 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13659 s
->contents
, s
->output_offset
,
13667 #include "elf64-target.h"