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_program
2674 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2675 elf_tdata (abfd
)->core_command
2676 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2682 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2695 va_start (ap
, note_type
);
2696 memset (data
, 0, 40);
2697 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2698 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2700 return elfcore_write_note (abfd
, buf
, bufsiz
,
2701 "CORE", note_type
, data
, sizeof (data
));
2712 va_start (ap
, note_type
);
2713 memset (data
, 0, 112);
2714 pid
= va_arg (ap
, long);
2715 bfd_put_32 (abfd
, pid
, data
+ 32);
2716 cursig
= va_arg (ap
, int);
2717 bfd_put_16 (abfd
, cursig
, data
+ 12);
2718 greg
= va_arg (ap
, const void *);
2719 memcpy (data
+ 112, greg
, 384);
2720 memset (data
+ 496, 0, 8);
2722 return elfcore_write_note (abfd
, buf
, bufsiz
,
2723 "CORE", note_type
, data
, sizeof (data
));
2728 /* Merge backend specific data from an object file to the output
2729 object file when linking. */
2732 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2734 /* Check if we have the same endianess. */
2735 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2736 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2737 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2741 if (bfd_big_endian (ibfd
))
2742 msg
= _("%B: compiled for a big endian system "
2743 "and target is little endian");
2745 msg
= _("%B: compiled for a little endian system "
2746 "and target is big endian");
2748 (*_bfd_error_handler
) (msg
, ibfd
);
2750 bfd_set_error (bfd_error_wrong_format
);
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2767 { NULL
, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type
{
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf
;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection
**func_sec
;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type
:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch
:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2816 if (!sec
->used_by_bfd
)
2818 struct _ppc64_elf_section_data
*sdata
;
2819 bfd_size_type amt
= sizeof (*sdata
);
2821 sdata
= bfd_zalloc (abfd
, amt
);
2824 sec
->used_by_bfd
= sdata
;
2827 return _bfd_elf_new_section_hook (abfd
, sec
);
2830 static struct _opd_sec_data
*
2831 get_opd_info (asection
* sec
)
2834 && ppc64_elf_section_data (sec
) != NULL
2835 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2836 return &ppc64_elf_section_data (sec
)->u
.opd
;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable
;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap
, const void *bp
)
2848 const asymbol
*a
= * (const asymbol
**) ap
;
2849 const asymbol
*b
= * (const asymbol
**) bp
;
2851 /* Section symbols first. */
2852 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2854 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2857 /* then .opd symbols. */
2858 if (strcmp (a
->section
->name
, ".opd") == 0
2859 && strcmp (b
->section
->name
, ".opd") != 0)
2861 if (strcmp (a
->section
->name
, ".opd") != 0
2862 && strcmp (b
->section
->name
, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2867 == (SEC_CODE
| SEC_ALLOC
)
2868 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2869 != (SEC_CODE
| SEC_ALLOC
))
2872 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2873 != (SEC_CODE
| SEC_ALLOC
)
2874 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2875 == (SEC_CODE
| SEC_ALLOC
))
2878 if (synthetic_relocatable
)
2880 if (a
->section
->id
< b
->section
->id
)
2883 if (a
->section
->id
> b
->section
->id
)
2887 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2890 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2898 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2901 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2904 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2907 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2910 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2913 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2916 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2933 mid
= (lo
+ hi
) >> 1;
2934 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2936 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2946 mid
= (lo
+ hi
) >> 1;
2947 if (syms
[mid
]->section
->id
< id
)
2949 else if (syms
[mid
]->section
->id
> id
)
2951 else if (syms
[mid
]->value
< value
)
2953 else if (syms
[mid
]->value
> value
)
2963 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2965 bfd_vma vma
= *(bfd_vma
*) ptr
;
2966 return ((section
->flags
& SEC_ALLOC
) != 0
2967 && section
->vma
<= vma
2968 && vma
< section
->vma
+ section
->size
);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2976 long static_count
, asymbol
**static_syms
,
2977 long dyn_count
, asymbol
**dyn_syms
,
2984 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2986 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2991 opd
= bfd_get_section_by_name (abfd
, ".opd");
2995 symcount
= static_count
;
2997 symcount
+= dyn_count
;
3001 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3005 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3009 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3011 else if (!relocatable
&& static_count
== 0)
3012 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3014 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3016 synthetic_relocatable
= relocatable
;
3017 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3019 if (!relocatable
&& symcount
> 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3026 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3027 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3028 syms
[j
++] = syms
[i
];
3033 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3037 for (; i
< symcount
; ++i
)
3038 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3039 != (SEC_CODE
| SEC_ALLOC
))
3040 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3044 for (; i
< symcount
; ++i
)
3045 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3049 for (; i
< symcount
; ++i
)
3050 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3054 for (; i
< symcount
; ++i
)
3055 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3056 != (SEC_CODE
| SEC_ALLOC
))
3064 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3069 if (opdsymend
== secsymend
)
3072 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3073 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3077 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3084 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3088 while (r
< opd
->relocation
+ relcount
3089 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3092 if (r
== opd
->relocation
+ relcount
)
3095 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3098 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3101 sym
= *r
->sym_ptr_ptr
;
3102 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3103 sym
->section
->id
, sym
->value
+ r
->addend
))
3106 size
+= sizeof (asymbol
);
3107 size
+= strlen (syms
[i
]->name
) + 2;
3111 s
= *ret
= bfd_malloc (size
);
3118 names
= (char *) (s
+ count
);
3120 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3124 while (r
< opd
->relocation
+ relcount
3125 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3128 if (r
== opd
->relocation
+ relcount
)
3131 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3134 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3137 sym
= *r
->sym_ptr_ptr
;
3138 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3139 sym
->section
->id
, sym
->value
+ r
->addend
))
3144 s
->flags
|= BSF_SYNTHETIC
;
3145 s
->section
= sym
->section
;
3146 s
->value
= sym
->value
+ r
->addend
;
3149 len
= strlen (syms
[i
]->name
);
3150 memcpy (names
, syms
[i
]->name
, len
+ 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s
->udata
.p
= syms
[i
];
3161 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3165 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3166 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3169 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3173 free_contents_and_exit
:
3181 for (i
= secsymend
; i
< opdsymend
; ++i
)
3185 /* Ignore bogus symbols. */
3186 if (syms
[i
]->value
> opd
->size
- 8)
3189 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3190 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3193 size
+= sizeof (asymbol
);
3194 size
+= strlen (syms
[i
]->name
) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3202 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3204 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3206 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3207 goto free_contents_and_exit
;
3209 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3210 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3213 extdynend
= extdyn
+ dynamic
->size
;
3214 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3216 Elf_Internal_Dyn dyn
;
3217 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3219 if (dyn
.d_tag
== DT_NULL
)
3222 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma
= dyn
.d_un
.d_val
+ 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd
, glink
, buf
,
3245 glink_vma
+ 4 - glink
->vma
, 4))
3247 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3249 if ((insn
& ~0x3fffffc) == 0)
3250 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3254 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3256 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3259 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3260 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3261 goto free_contents_and_exit
;
3263 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3264 size
+= plt_count
* sizeof (asymbol
);
3266 p
= relplt
->relocation
;
3267 for (i
= 0; i
< plt_count
; i
++, p
++)
3269 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3271 size
+= sizeof ("+0x") - 1 + 16;
3276 s
= *ret
= bfd_malloc (size
);
3278 goto free_contents_and_exit
;
3280 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3282 for (i
= secsymend
; i
< opdsymend
; ++i
)
3286 if (syms
[i
]->value
> opd
->size
- 8)
3289 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3290 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3294 asection
*sec
= abfd
->sections
;
3301 long mid
= (lo
+ hi
) >> 1;
3302 if (syms
[mid
]->section
->vma
< ent
)
3304 else if (syms
[mid
]->section
->vma
> ent
)
3308 sec
= syms
[mid
]->section
;
3313 if (lo
>= hi
&& lo
> codesecsym
)
3314 sec
= syms
[lo
- 1]->section
;
3316 for (; sec
!= NULL
; sec
= sec
->next
)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec
->flags
& SEC_ALLOC
) == 0)
3324 if ((sec
->flags
& SEC_CODE
) != 0)
3327 s
->flags
|= BSF_SYNTHETIC
;
3328 s
->value
= ent
- s
->section
->vma
;
3331 len
= strlen (syms
[i
]->name
);
3332 memcpy (names
, syms
[i
]->name
, len
+ 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s
->udata
.p
= syms
[i
];
3342 if (glink
!= NULL
&& relplt
!= NULL
)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s
, 0, sizeof *s
);
3349 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3351 s
->value
= resolv_vma
- glink
->vma
;
3353 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names
+= sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p
= relplt
->relocation
;
3376 for (i
= 0; i
< plt_count
; i
++, p
++)
3380 *s
= **p
->sym_ptr_ptr
;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s
->flags
& BSF_LOCAL
) == 0)
3384 s
->flags
|= BSF_GLOBAL
;
3385 s
->flags
|= BSF_SYNTHETIC
;
3387 s
->value
= glink_vma
- glink
->vma
;
3390 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3391 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3395 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3396 names
+= sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3398 names
+= strlen (names
);
3400 memcpy (names
, "@plt", sizeof ("@plt"));
3401 names
+= sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* The linker needs to keep track of the number of relocs that it
3489 decides to copy as dynamic relocs in check_relocs for each symbol.
3490 This is so that it can later discard them if they are found to be
3491 unnecessary. We store the information in a field extending the
3492 regular ELF linker hash table. */
3494 struct ppc_dyn_relocs
3496 struct ppc_dyn_relocs
*next
;
3498 /* The input section of the reloc. */
3501 /* Total number of relocs copied for the input section. */
3502 bfd_size_type count
;
3504 /* Number of pc-relative relocs copied for the input section. */
3505 bfd_size_type pc_count
;
3508 /* Of those relocs that might be copied as dynamic relocs, this function
3509 selects those that must be copied when linking a shared library,
3510 even when the symbol is local. */
3513 must_be_dyn_reloc (struct bfd_link_info
*info
,
3514 enum elf_ppc64_reloc_type r_type
)
3526 case R_PPC64_TPREL16
:
3527 case R_PPC64_TPREL16_LO
:
3528 case R_PPC64_TPREL16_HI
:
3529 case R_PPC64_TPREL16_HA
:
3530 case R_PPC64_TPREL16_DS
:
3531 case R_PPC64_TPREL16_LO_DS
:
3532 case R_PPC64_TPREL16_HIGHER
:
3533 case R_PPC64_TPREL16_HIGHERA
:
3534 case R_PPC64_TPREL16_HIGHEST
:
3535 case R_PPC64_TPREL16_HIGHESTA
:
3536 case R_PPC64_TPREL64
:
3537 return !info
->executable
;
3541 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3542 copying dynamic variables from a shared lib into an app's dynbss
3543 section, and instead use a dynamic relocation to point into the
3544 shared lib. With code that gcc generates, it's vital that this be
3545 enabled; In the PowerPC64 ABI, the address of a function is actually
3546 the address of a function descriptor, which resides in the .opd
3547 section. gcc uses the descriptor directly rather than going via the
3548 GOT as some other ABI's do, which means that initialized function
3549 pointers must reference the descriptor. Thus, a function pointer
3550 initialized to the address of a function in a shared library will
3551 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3552 redefines the function descriptor symbol to point to the copy. This
3553 presents a problem as a plt entry for that function is also
3554 initialized from the function descriptor symbol and the copy reloc
3555 may not be initialized first. */
3556 #define ELIMINATE_COPY_RELOCS 1
3558 /* Section name for stubs is the associated section name plus this
3560 #define STUB_SUFFIX ".stub"
3563 ppc_stub_long_branch:
3564 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3565 destination, but a 24 bit branch in a stub section will reach.
3568 ppc_stub_plt_branch:
3569 Similar to the above, but a 24 bit branch in the stub section won't
3570 reach its destination.
3571 . addis %r12,%r2,xxx@toc@ha
3572 . ld %r11,xxx@toc@l(%r12)
3577 Used to call a function in a shared library. If it so happens that
3578 the plt entry referenced crosses a 64k boundary, then an extra
3579 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3580 . addis %r12,%r2,xxx@toc@ha
3582 . ld %r11,xxx+0@toc@l(%r12)
3584 . ld %r2,xxx+8@toc@l(%r12)
3585 . ld %r11,xxx+16@toc@l(%r12)
3588 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3589 code to adjust the value and save r2 to support multiple toc sections.
3590 A ppc_stub_long_branch with an r2 offset looks like:
3592 . addis %r2,%r2,off@ha
3593 . addi %r2,%r2,off@l
3596 A ppc_stub_plt_branch with an r2 offset looks like:
3598 . addis %r12,%r2,xxx@toc@ha
3599 . ld %r11,xxx@toc@l(%r12)
3600 . addis %r2,%r2,off@ha
3601 . addi %r2,%r2,off@l
3605 In cases where the "addis" instruction would add zero, the "addis" is
3606 omitted and following instructions modified slightly in some cases.
3609 enum ppc_stub_type
{
3611 ppc_stub_long_branch
,
3612 ppc_stub_long_branch_r2off
,
3613 ppc_stub_plt_branch
,
3614 ppc_stub_plt_branch_r2off
,
3618 struct ppc_stub_hash_entry
{
3620 /* Base hash table entry structure. */
3621 struct bfd_hash_entry root
;
3623 enum ppc_stub_type stub_type
;
3625 /* The stub section. */
3628 /* Offset within stub_sec of the beginning of this stub. */
3629 bfd_vma stub_offset
;
3631 /* Given the symbol's value and its section we can determine its final
3632 value when building the stubs (so the stub knows where to jump. */
3633 bfd_vma target_value
;
3634 asection
*target_section
;
3636 /* The symbol table entry, if any, that this was derived from. */
3637 struct ppc_link_hash_entry
*h
;
3638 struct plt_entry
*plt_ent
;
3640 /* And the reloc addend that this was derived from. */
3643 /* Where this stub is being called from, or, in the case of combined
3644 stub sections, the first input section in the group. */
3648 struct ppc_branch_hash_entry
{
3650 /* Base hash table entry structure. */
3651 struct bfd_hash_entry root
;
3653 /* Offset within branch lookup table. */
3654 unsigned int offset
;
3656 /* Generation marker. */
3660 struct ppc_link_hash_entry
3662 struct elf_link_hash_entry elf
;
3665 /* A pointer to the most recently used stub hash entry against this
3667 struct ppc_stub_hash_entry
*stub_cache
;
3669 /* A pointer to the next symbol starting with a '.' */
3670 struct ppc_link_hash_entry
*next_dot_sym
;
3673 /* Track dynamic relocs copied for this symbol. */
3674 struct ppc_dyn_relocs
*dyn_relocs
;
3676 /* Link between function code and descriptor symbols. */
3677 struct ppc_link_hash_entry
*oh
;
3679 /* Flag function code and descriptor symbols. */
3680 unsigned int is_func
:1;
3681 unsigned int is_func_descriptor
:1;
3682 unsigned int fake
:1;
3684 /* Whether global opd/toc sym has been adjusted or not.
3685 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3686 should be set for all globals defined in any opd/toc section. */
3687 unsigned int adjust_done
:1;
3689 /* Set if we twiddled this symbol to weak at some stage. */
3690 unsigned int was_undefined
:1;
3692 /* Contexts in which symbol is used in the GOT (or TOC).
3693 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3694 corresponding relocs are encountered during check_relocs.
3695 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3696 indicate the corresponding GOT entry type is not needed.
3697 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3698 a TPREL one. We use a separate flag rather than setting TPREL
3699 just for convenience in distinguishing the two cases. */
3700 #define TLS_GD 1 /* GD reloc. */
3701 #define TLS_LD 2 /* LD reloc. */
3702 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3703 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3704 #define TLS_TLS 16 /* Any TLS reloc. */
3705 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3706 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3707 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3708 unsigned char tls_mask
;
3711 /* ppc64 ELF linker hash table. */
3713 struct ppc_link_hash_table
3715 struct elf_link_hash_table elf
;
3717 /* The stub hash table. */
3718 struct bfd_hash_table stub_hash_table
;
3720 /* Another hash table for plt_branch stubs. */
3721 struct bfd_hash_table branch_hash_table
;
3723 /* Linker stub bfd. */
3726 /* Linker call-backs. */
3727 asection
* (*add_stub_section
) (const char *, asection
*);
3728 void (*layout_sections_again
) (void);
3730 /* Array to keep track of which stub sections have been created, and
3731 information on stub grouping. */
3733 /* This is the section to which stubs in the group will be attached. */
3735 /* The stub section. */
3737 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3741 /* Temp used when calculating TOC pointers. */
3744 asection
*toc_first_sec
;
3746 /* Highest input section id. */
3749 /* Highest output section index. */
3752 /* Used when adding symbols. */
3753 struct ppc_link_hash_entry
*dot_syms
;
3755 /* List of input sections for each output section. */
3756 asection
**input_list
;
3758 /* Short-cuts to get to dynamic linker sections. */
3771 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3772 struct ppc_link_hash_entry
*tls_get_addr
;
3773 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3775 /* The size of reliplt used by got entry relocs. */
3776 bfd_size_type got_reli_size
;
3779 unsigned long stub_count
[ppc_stub_plt_call
];
3781 /* Number of stubs against global syms. */
3782 unsigned long stub_globals
;
3784 /* Set if we should emit symbols for stubs. */
3785 unsigned int emit_stub_syms
:1;
3787 /* Set if __tls_get_addr optimization should not be done. */
3788 unsigned int no_tls_get_addr_opt
:1;
3790 /* Support for multiple toc sections. */
3791 unsigned int do_multi_toc
:1;
3792 unsigned int multi_toc_needed
:1;
3793 unsigned int second_toc_pass
:1;
3794 unsigned int do_toc_opt
:1;
3797 unsigned int stub_error
:1;
3799 /* Temp used by ppc64_elf_process_dot_syms. */
3800 unsigned int twiddled_syms
:1;
3802 /* Incremented every time we size stubs. */
3803 unsigned int stub_iteration
;
3805 /* Small local sym cache. */
3806 struct sym_cache sym_cache
;
3809 /* Rename some of the generic section flags to better document how they
3812 /* Nonzero if this section has TLS related relocations. */
3813 #define has_tls_reloc sec_flg0
3815 /* Nonzero if this section has a call to __tls_get_addr. */
3816 #define has_tls_get_addr_call sec_flg1
3818 /* Nonzero if this section has any toc or got relocs. */
3819 #define has_toc_reloc sec_flg2
3821 /* Nonzero if this section has a call to another section that uses
3823 #define makes_toc_func_call sec_flg3
3825 /* Recursion protection when determining above flag. */
3826 #define call_check_in_progress sec_flg4
3827 #define call_check_done sec_flg5
3829 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3831 #define ppc_hash_table(p) \
3832 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3833 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3835 #define ppc_stub_hash_lookup(table, string, create, copy) \
3836 ((struct ppc_stub_hash_entry *) \
3837 bfd_hash_lookup ((table), (string), (create), (copy)))
3839 #define ppc_branch_hash_lookup(table, string, create, copy) \
3840 ((struct ppc_branch_hash_entry *) \
3841 bfd_hash_lookup ((table), (string), (create), (copy)))
3843 /* Create an entry in the stub hash table. */
3845 static struct bfd_hash_entry
*
3846 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3847 struct bfd_hash_table
*table
,
3850 /* Allocate the structure if it has not already been allocated by a
3854 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3859 /* Call the allocation method of the superclass. */
3860 entry
= bfd_hash_newfunc (entry
, table
, string
);
3863 struct ppc_stub_hash_entry
*eh
;
3865 /* Initialize the local fields. */
3866 eh
= (struct ppc_stub_hash_entry
*) entry
;
3867 eh
->stub_type
= ppc_stub_none
;
3868 eh
->stub_sec
= NULL
;
3869 eh
->stub_offset
= 0;
3870 eh
->target_value
= 0;
3871 eh
->target_section
= NULL
;
3879 /* Create an entry in the branch hash table. */
3881 static struct bfd_hash_entry
*
3882 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3883 struct bfd_hash_table
*table
,
3886 /* Allocate the structure if it has not already been allocated by a
3890 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3895 /* Call the allocation method of the superclass. */
3896 entry
= bfd_hash_newfunc (entry
, table
, string
);
3899 struct ppc_branch_hash_entry
*eh
;
3901 /* Initialize the local fields. */
3902 eh
= (struct ppc_branch_hash_entry
*) entry
;
3910 /* Create an entry in a ppc64 ELF linker hash table. */
3912 static struct bfd_hash_entry
*
3913 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3914 struct bfd_hash_table
*table
,
3917 /* Allocate the structure if it has not already been allocated by a
3921 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3926 /* Call the allocation method of the superclass. */
3927 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3930 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3932 memset (&eh
->u
.stub_cache
, 0,
3933 (sizeof (struct ppc_link_hash_entry
)
3934 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3936 /* When making function calls, old ABI code references function entry
3937 points (dot symbols), while new ABI code references the function
3938 descriptor symbol. We need to make any combination of reference and
3939 definition work together, without breaking archive linking.
3941 For a defined function "foo" and an undefined call to "bar":
3942 An old object defines "foo" and ".foo", references ".bar" (possibly
3944 A new object defines "foo" and references "bar".
3946 A new object thus has no problem with its undefined symbols being
3947 satisfied by definitions in an old object. On the other hand, the
3948 old object won't have ".bar" satisfied by a new object.
3950 Keep a list of newly added dot-symbols. */
3952 if (string
[0] == '.')
3954 struct ppc_link_hash_table
*htab
;
3956 htab
= (struct ppc_link_hash_table
*) table
;
3957 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3958 htab
->dot_syms
= eh
;
3965 /* Create a ppc64 ELF linker hash table. */
3967 static struct bfd_link_hash_table
*
3968 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3970 struct ppc_link_hash_table
*htab
;
3971 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3973 htab
= bfd_zmalloc (amt
);
3977 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3978 sizeof (struct ppc_link_hash_entry
),
3985 /* Init the stub hash table too. */
3986 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3987 sizeof (struct ppc_stub_hash_entry
)))
3990 /* And the branch hash table. */
3991 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3992 sizeof (struct ppc_branch_hash_entry
)))
3995 /* Initializing two fields of the union is just cosmetic. We really
3996 only care about glist, but when compiled on a 32-bit host the
3997 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3998 debugger inspection of these fields look nicer. */
3999 htab
->elf
.init_got_refcount
.refcount
= 0;
4000 htab
->elf
.init_got_refcount
.glist
= NULL
;
4001 htab
->elf
.init_plt_refcount
.refcount
= 0;
4002 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4003 htab
->elf
.init_got_offset
.offset
= 0;
4004 htab
->elf
.init_got_offset
.glist
= NULL
;
4005 htab
->elf
.init_plt_offset
.offset
= 0;
4006 htab
->elf
.init_plt_offset
.glist
= NULL
;
4008 return &htab
->elf
.root
;
4011 /* Free the derived linker hash table. */
4014 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4016 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
4018 bfd_hash_table_free (&ret
->stub_hash_table
);
4019 bfd_hash_table_free (&ret
->branch_hash_table
);
4020 _bfd_generic_link_hash_table_free (hash
);
4023 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4026 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4028 struct ppc_link_hash_table
*htab
;
4030 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4032 /* Always hook our dynamic sections into the first bfd, which is the
4033 linker created stub bfd. This ensures that the GOT header is at
4034 the start of the output TOC section. */
4035 htab
= ppc_hash_table (info
);
4038 htab
->stub_bfd
= abfd
;
4039 htab
->elf
.dynobj
= abfd
;
4042 /* Build a name for an entry in the stub hash table. */
4045 ppc_stub_name (const asection
*input_section
,
4046 const asection
*sym_sec
,
4047 const struct ppc_link_hash_entry
*h
,
4048 const Elf_Internal_Rela
*rel
)
4053 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4054 offsets from a sym as a branch target? In fact, we could
4055 probably assume the addend is always zero. */
4056 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4060 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4061 stub_name
= bfd_malloc (len
);
4062 if (stub_name
== NULL
)
4065 sprintf (stub_name
, "%08x.%s+%x",
4066 input_section
->id
& 0xffffffff,
4067 h
->elf
.root
.root
.string
,
4068 (int) rel
->r_addend
& 0xffffffff);
4072 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4073 stub_name
= bfd_malloc (len
);
4074 if (stub_name
== NULL
)
4077 sprintf (stub_name
, "%08x.%x:%x+%x",
4078 input_section
->id
& 0xffffffff,
4079 sym_sec
->id
& 0xffffffff,
4080 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4081 (int) rel
->r_addend
& 0xffffffff);
4083 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4084 stub_name
[len
- 2] = 0;
4088 /* Look up an entry in the stub hash. Stub entries are cached because
4089 creating the stub name takes a bit of time. */
4091 static struct ppc_stub_hash_entry
*
4092 ppc_get_stub_entry (const asection
*input_section
,
4093 const asection
*sym_sec
,
4094 struct ppc_link_hash_entry
*h
,
4095 const Elf_Internal_Rela
*rel
,
4096 struct ppc_link_hash_table
*htab
)
4098 struct ppc_stub_hash_entry
*stub_entry
;
4099 const asection
*id_sec
;
4101 /* If this input section is part of a group of sections sharing one
4102 stub section, then use the id of the first section in the group.
4103 Stub names need to include a section id, as there may well be
4104 more than one stub used to reach say, printf, and we need to
4105 distinguish between them. */
4106 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4108 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4109 && h
->u
.stub_cache
->h
== h
4110 && h
->u
.stub_cache
->id_sec
== id_sec
)
4112 stub_entry
= h
->u
.stub_cache
;
4118 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4119 if (stub_name
== NULL
)
4122 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4123 stub_name
, FALSE
, FALSE
);
4125 h
->u
.stub_cache
= stub_entry
;
4133 /* Add a new stub entry to the stub hash. Not all fields of the new
4134 stub entry are initialised. */
4136 static struct ppc_stub_hash_entry
*
4137 ppc_add_stub (const char *stub_name
,
4139 struct ppc_link_hash_table
*htab
)
4143 struct ppc_stub_hash_entry
*stub_entry
;
4145 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4146 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4147 if (stub_sec
== NULL
)
4149 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4150 if (stub_sec
== NULL
)
4156 namelen
= strlen (link_sec
->name
);
4157 len
= namelen
+ sizeof (STUB_SUFFIX
);
4158 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4162 memcpy (s_name
, link_sec
->name
, namelen
);
4163 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4164 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4165 if (stub_sec
== NULL
)
4167 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4169 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4172 /* Enter this entry into the linker stub hash table. */
4173 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4175 if (stub_entry
== NULL
)
4177 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4178 section
->owner
, stub_name
);
4182 stub_entry
->stub_sec
= stub_sec
;
4183 stub_entry
->stub_offset
= 0;
4184 stub_entry
->id_sec
= link_sec
;
4188 /* Create sections for linker generated code. */
4191 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4193 struct ppc_link_hash_table
*htab
;
4196 htab
= ppc_hash_table (info
);
4200 /* Create .sfpr for code to save and restore fp regs. */
4201 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4202 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4203 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4205 if (htab
->sfpr
== NULL
4206 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4209 /* Create .glink for lazy dynamic linking support. */
4210 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4212 if (htab
->glink
== NULL
4213 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4216 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4217 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4218 if (htab
->iplt
== NULL
4219 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4222 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4223 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4224 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4227 if (htab
->reliplt
== NULL
4228 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4231 /* Create branch lookup table for plt_branch stubs. */
4232 flags
= (SEC_ALLOC
| SEC_LOAD
4233 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4234 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4236 if (htab
->brlt
== NULL
4237 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4243 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4244 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4245 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4248 if (htab
->relbrlt
== NULL
4249 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4255 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4256 not already done. */
4259 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4261 asection
*got
, *relgot
;
4263 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4265 if (!is_ppc64_elf (abfd
))
4272 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4275 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4280 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4281 | SEC_LINKER_CREATED
);
4283 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4285 || !bfd_set_section_alignment (abfd
, got
, 3))
4288 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4289 flags
| SEC_READONLY
);
4291 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4294 ppc64_elf_tdata (abfd
)->got
= got
;
4295 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4299 /* Create the dynamic sections, and set up shortcuts. */
4302 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4304 struct ppc_link_hash_table
*htab
;
4306 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4309 htab
= ppc_hash_table (info
);
4314 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4315 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4316 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4317 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4319 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4321 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4322 || (!info
->shared
&& !htab
->relbss
))
4328 /* Follow indirect and warning symbol links. */
4330 static inline struct bfd_link_hash_entry
*
4331 follow_link (struct bfd_link_hash_entry
*h
)
4333 while (h
->type
== bfd_link_hash_indirect
4334 || h
->type
== bfd_link_hash_warning
)
4339 static inline struct elf_link_hash_entry
*
4340 elf_follow_link (struct elf_link_hash_entry
*h
)
4342 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4345 static inline struct ppc_link_hash_entry
*
4346 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4348 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4351 /* Merge PLT info on FROM with that on TO. */
4354 move_plt_plist (struct ppc_link_hash_entry
*from
,
4355 struct ppc_link_hash_entry
*to
)
4357 if (from
->elf
.plt
.plist
!= NULL
)
4359 if (to
->elf
.plt
.plist
!= NULL
)
4361 struct plt_entry
**entp
;
4362 struct plt_entry
*ent
;
4364 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4366 struct plt_entry
*dent
;
4368 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4369 if (dent
->addend
== ent
->addend
)
4371 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4378 *entp
= to
->elf
.plt
.plist
;
4381 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4382 from
->elf
.plt
.plist
= NULL
;
4386 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4389 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4390 struct elf_link_hash_entry
*dir
,
4391 struct elf_link_hash_entry
*ind
)
4393 struct ppc_link_hash_entry
*edir
, *eind
;
4395 edir
= (struct ppc_link_hash_entry
*) dir
;
4396 eind
= (struct ppc_link_hash_entry
*) ind
;
4398 /* Copy over any dynamic relocs we may have on the indirect sym. */
4399 if (eind
->dyn_relocs
!= NULL
)
4401 if (edir
->dyn_relocs
!= NULL
)
4403 struct ppc_dyn_relocs
**pp
;
4404 struct ppc_dyn_relocs
*p
;
4406 /* Add reloc counts against the indirect sym to the direct sym
4407 list. Merge any entries against the same section. */
4408 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4410 struct ppc_dyn_relocs
*q
;
4412 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4413 if (q
->sec
== p
->sec
)
4415 q
->pc_count
+= p
->pc_count
;
4416 q
->count
+= p
->count
;
4423 *pp
= edir
->dyn_relocs
;
4426 edir
->dyn_relocs
= eind
->dyn_relocs
;
4427 eind
->dyn_relocs
= NULL
;
4430 edir
->is_func
|= eind
->is_func
;
4431 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4432 edir
->tls_mask
|= eind
->tls_mask
;
4433 if (eind
->oh
!= NULL
)
4434 edir
->oh
= ppc_follow_link (eind
->oh
);
4436 /* If called to transfer flags for a weakdef during processing
4437 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4438 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4439 if (!(ELIMINATE_COPY_RELOCS
4440 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4441 && edir
->elf
.dynamic_adjusted
))
4442 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4444 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4445 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4446 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4447 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4449 /* If we were called to copy over info for a weak sym, that's all. */
4450 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4453 /* Copy over got entries that we may have already seen to the
4454 symbol which just became indirect. */
4455 if (eind
->elf
.got
.glist
!= NULL
)
4457 if (edir
->elf
.got
.glist
!= NULL
)
4459 struct got_entry
**entp
;
4460 struct got_entry
*ent
;
4462 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4464 struct got_entry
*dent
;
4466 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4467 if (dent
->addend
== ent
->addend
4468 && dent
->owner
== ent
->owner
4469 && dent
->tls_type
== ent
->tls_type
)
4471 dent
->got
.refcount
+= ent
->got
.refcount
;
4478 *entp
= edir
->elf
.got
.glist
;
4481 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4482 eind
->elf
.got
.glist
= NULL
;
4485 /* And plt entries. */
4486 move_plt_plist (eind
, edir
);
4488 if (eind
->elf
.dynindx
!= -1)
4490 if (edir
->elf
.dynindx
!= -1)
4491 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4492 edir
->elf
.dynstr_index
);
4493 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4494 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4495 eind
->elf
.dynindx
= -1;
4496 eind
->elf
.dynstr_index
= 0;
4500 /* Find the function descriptor hash entry from the given function code
4501 hash entry FH. Link the entries via their OH fields. */
4503 static struct ppc_link_hash_entry
*
4504 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4506 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4510 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4512 fdh
= (struct ppc_link_hash_entry
*)
4513 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4517 fdh
->is_func_descriptor
= 1;
4523 return ppc_follow_link (fdh
);
4526 /* Make a fake function descriptor sym for the code sym FH. */
4528 static struct ppc_link_hash_entry
*
4529 make_fdh (struct bfd_link_info
*info
,
4530 struct ppc_link_hash_entry
*fh
)
4534 struct bfd_link_hash_entry
*bh
;
4535 struct ppc_link_hash_entry
*fdh
;
4537 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4538 newsym
= bfd_make_empty_symbol (abfd
);
4539 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4540 newsym
->section
= bfd_und_section_ptr
;
4542 newsym
->flags
= BSF_WEAK
;
4545 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4546 newsym
->flags
, newsym
->section
,
4547 newsym
->value
, NULL
, FALSE
, FALSE
,
4551 fdh
= (struct ppc_link_hash_entry
*) bh
;
4552 fdh
->elf
.non_elf
= 0;
4554 fdh
->is_func_descriptor
= 1;
4561 /* Fix function descriptor symbols defined in .opd sections to be
4565 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4566 struct bfd_link_info
*info
,
4567 Elf_Internal_Sym
*isym
,
4568 const char **name ATTRIBUTE_UNUSED
,
4569 flagword
*flags ATTRIBUTE_UNUSED
,
4571 bfd_vma
*value ATTRIBUTE_UNUSED
)
4573 if ((ibfd
->flags
& DYNAMIC
) == 0
4574 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4575 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4577 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4579 if ((ibfd
->flags
& DYNAMIC
) == 0)
4580 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4582 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4584 else if (*sec
!= NULL
4585 && strcmp ((*sec
)->name
, ".opd") == 0)
4586 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4591 /* This function makes an old ABI object reference to ".bar" cause the
4592 inclusion of a new ABI object archive that defines "bar".
4593 NAME is a symbol defined in an archive. Return a symbol in the hash
4594 table that might be satisfied by the archive symbols. */
4596 static struct elf_link_hash_entry
*
4597 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4598 struct bfd_link_info
*info
,
4601 struct elf_link_hash_entry
*h
;
4605 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4607 /* Don't return this sym if it is a fake function descriptor
4608 created by add_symbol_adjust. */
4609 && !(h
->root
.type
== bfd_link_hash_undefweak
4610 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4616 len
= strlen (name
);
4617 dot_name
= bfd_alloc (abfd
, len
+ 2);
4618 if (dot_name
== NULL
)
4619 return (struct elf_link_hash_entry
*) 0 - 1;
4621 memcpy (dot_name
+ 1, name
, len
+ 1);
4622 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4623 bfd_release (abfd
, dot_name
);
4627 /* This function satisfies all old ABI object references to ".bar" if a
4628 new ABI object defines "bar". Well, at least, undefined dot symbols
4629 are made weak. This stops later archive searches from including an
4630 object if we already have a function descriptor definition. It also
4631 prevents the linker complaining about undefined symbols.
4632 We also check and correct mismatched symbol visibility here. The
4633 most restrictive visibility of the function descriptor and the
4634 function entry symbol is used. */
4637 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4639 struct ppc_link_hash_table
*htab
;
4640 struct ppc_link_hash_entry
*fdh
;
4642 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4645 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4646 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4648 if (eh
->elf
.root
.root
.string
[0] != '.')
4651 htab
= ppc_hash_table (info
);
4655 fdh
= lookup_fdh (eh
, htab
);
4658 if (!info
->relocatable
4659 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4660 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4661 && eh
->elf
.ref_regular
)
4663 /* Make an undefweak function descriptor sym, which is enough to
4664 pull in an --as-needed shared lib, but won't cause link
4665 errors. Archives are handled elsewhere. */
4666 fdh
= make_fdh (info
, eh
);
4669 fdh
->elf
.ref_regular
= 1;
4674 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4675 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4676 if (entry_vis
< descr_vis
)
4677 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4678 else if (entry_vis
> descr_vis
)
4679 eh
->elf
.other
+= descr_vis
- entry_vis
;
4681 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4682 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4683 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4685 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4686 eh
->was_undefined
= 1;
4687 htab
->twiddled_syms
= 1;
4694 /* Process list of dot-symbols we made in link_hash_newfunc. */
4697 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4699 struct ppc_link_hash_table
*htab
;
4700 struct ppc_link_hash_entry
**p
, *eh
;
4702 if (!is_ppc64_elf (info
->output_bfd
))
4704 htab
= ppc_hash_table (info
);
4708 if (is_ppc64_elf (ibfd
))
4710 p
= &htab
->dot_syms
;
4711 while ((eh
= *p
) != NULL
)
4714 if (!add_symbol_adjust (eh
, info
))
4716 p
= &eh
->u
.next_dot_sym
;
4720 /* Clear the list for non-ppc64 input files. */
4721 p
= &htab
->dot_syms
;
4722 while ((eh
= *p
) != NULL
)
4725 p
= &eh
->u
.next_dot_sym
;
4728 /* We need to fix the undefs list for any syms we have twiddled to
4730 if (htab
->twiddled_syms
)
4732 bfd_link_repair_undef_list (&htab
->elf
.root
);
4733 htab
->twiddled_syms
= 0;
4738 /* Undo hash table changes when an --as-needed input file is determined
4739 not to be needed. */
4742 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4743 struct bfd_link_info
*info
)
4745 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4750 htab
->dot_syms
= NULL
;
4754 /* If --just-symbols against a final linked binary, then assume we need
4755 toc adjusting stubs when calling functions defined there. */
4758 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4760 if ((sec
->flags
& SEC_CODE
) != 0
4761 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4762 && is_ppc64_elf (sec
->owner
))
4764 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4766 && got
->size
>= elf_backend_got_header_size
4767 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4768 sec
->has_toc_reloc
= 1;
4770 _bfd_elf_link_just_syms (sec
, info
);
4773 static struct plt_entry
**
4774 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4775 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4777 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4778 struct plt_entry
**local_plt
;
4779 unsigned char *local_got_tls_masks
;
4781 if (local_got_ents
== NULL
)
4783 bfd_size_type size
= symtab_hdr
->sh_info
;
4785 size
*= (sizeof (*local_got_ents
)
4786 + sizeof (*local_plt
)
4787 + sizeof (*local_got_tls_masks
));
4788 local_got_ents
= bfd_zalloc (abfd
, size
);
4789 if (local_got_ents
== NULL
)
4791 elf_local_got_ents (abfd
) = local_got_ents
;
4794 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4796 struct got_entry
*ent
;
4798 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4799 if (ent
->addend
== r_addend
4800 && ent
->owner
== abfd
4801 && ent
->tls_type
== tls_type
)
4805 bfd_size_type amt
= sizeof (*ent
);
4806 ent
= bfd_alloc (abfd
, amt
);
4809 ent
->next
= local_got_ents
[r_symndx
];
4810 ent
->addend
= r_addend
;
4812 ent
->tls_type
= tls_type
;
4813 ent
->is_indirect
= FALSE
;
4814 ent
->got
.refcount
= 0;
4815 local_got_ents
[r_symndx
] = ent
;
4817 ent
->got
.refcount
+= 1;
4820 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4821 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4822 local_got_tls_masks
[r_symndx
] |= tls_type
;
4824 return local_plt
+ r_symndx
;
4828 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4830 struct plt_entry
*ent
;
4832 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4833 if (ent
->addend
== addend
)
4837 bfd_size_type amt
= sizeof (*ent
);
4838 ent
= bfd_alloc (abfd
, amt
);
4842 ent
->addend
= addend
;
4843 ent
->plt
.refcount
= 0;
4846 ent
->plt
.refcount
+= 1;
4851 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4853 return (r_type
== R_PPC64_REL24
4854 || r_type
== R_PPC64_REL14
4855 || r_type
== R_PPC64_REL14_BRTAKEN
4856 || r_type
== R_PPC64_REL14_BRNTAKEN
4857 || r_type
== R_PPC64_ADDR24
4858 || r_type
== R_PPC64_ADDR14
4859 || r_type
== R_PPC64_ADDR14_BRTAKEN
4860 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4863 /* Look through the relocs for a section during the first phase, and
4864 calculate needed space in the global offset table, procedure
4865 linkage table, and dynamic reloc sections. */
4868 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4869 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4871 struct ppc_link_hash_table
*htab
;
4872 Elf_Internal_Shdr
*symtab_hdr
;
4873 struct elf_link_hash_entry
**sym_hashes
;
4874 const Elf_Internal_Rela
*rel
;
4875 const Elf_Internal_Rela
*rel_end
;
4877 asection
**opd_sym_map
;
4878 struct elf_link_hash_entry
*tga
, *dottga
;
4880 if (info
->relocatable
)
4883 /* Don't do anything special with non-loaded, non-alloced sections.
4884 In particular, any relocs in such sections should not affect GOT
4885 and PLT reference counting (ie. we don't allow them to create GOT
4886 or PLT entries), there's no possibility or desire to optimize TLS
4887 relocs, and there's not much point in propagating relocs to shared
4888 libs that the dynamic linker won't relocate. */
4889 if ((sec
->flags
& SEC_ALLOC
) == 0)
4892 BFD_ASSERT (is_ppc64_elf (abfd
));
4894 htab
= ppc_hash_table (info
);
4898 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4899 FALSE
, FALSE
, TRUE
);
4900 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4901 FALSE
, FALSE
, TRUE
);
4902 symtab_hdr
= &elf_symtab_hdr (abfd
);
4903 sym_hashes
= elf_sym_hashes (abfd
);
4906 if (strcmp (sec
->name
, ".opd") == 0)
4908 /* Garbage collection needs some extra help with .opd sections.
4909 We don't want to necessarily keep everything referenced by
4910 relocs in .opd, as that would keep all functions. Instead,
4911 if we reference an .opd symbol (a function descriptor), we
4912 want to keep the function code symbol's section. This is
4913 easy for global symbols, but for local syms we need to keep
4914 information about the associated function section. */
4917 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4918 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4919 if (opd_sym_map
== NULL
)
4921 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4922 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4923 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4926 if (htab
->sfpr
== NULL
4927 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4930 rel_end
= relocs
+ sec
->reloc_count
;
4931 for (rel
= relocs
; rel
< rel_end
; rel
++)
4933 unsigned long r_symndx
;
4934 struct elf_link_hash_entry
*h
;
4935 enum elf_ppc64_reloc_type r_type
;
4937 struct _ppc64_elf_section_data
*ppc64_sec
;
4938 struct plt_entry
**ifunc
;
4940 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4941 if (r_symndx
< symtab_hdr
->sh_info
)
4945 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4946 h
= elf_follow_link (h
);
4953 if (h
->type
== STT_GNU_IFUNC
)
4956 ifunc
= &h
->plt
.plist
;
4961 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4966 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4968 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4969 rel
->r_addend
, PLT_IFUNC
);
4974 r_type
= ELF64_R_TYPE (rel
->r_info
);
4975 if (is_branch_reloc (r_type
))
4977 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4980 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4981 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4982 /* We have a new-style __tls_get_addr call with a marker
4986 /* Mark this section as having an old-style call. */
4987 sec
->has_tls_get_addr_call
= 1;
4990 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4992 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5000 /* These special tls relocs tie a call to __tls_get_addr with
5001 its parameter symbol. */
5004 case R_PPC64_GOT_TLSLD16
:
5005 case R_PPC64_GOT_TLSLD16_LO
:
5006 case R_PPC64_GOT_TLSLD16_HI
:
5007 case R_PPC64_GOT_TLSLD16_HA
:
5008 tls_type
= TLS_TLS
| TLS_LD
;
5011 case R_PPC64_GOT_TLSGD16
:
5012 case R_PPC64_GOT_TLSGD16_LO
:
5013 case R_PPC64_GOT_TLSGD16_HI
:
5014 case R_PPC64_GOT_TLSGD16_HA
:
5015 tls_type
= TLS_TLS
| TLS_GD
;
5018 case R_PPC64_GOT_TPREL16_DS
:
5019 case R_PPC64_GOT_TPREL16_LO_DS
:
5020 case R_PPC64_GOT_TPREL16_HI
:
5021 case R_PPC64_GOT_TPREL16_HA
:
5022 if (!info
->executable
)
5023 info
->flags
|= DF_STATIC_TLS
;
5024 tls_type
= TLS_TLS
| TLS_TPREL
;
5027 case R_PPC64_GOT_DTPREL16_DS
:
5028 case R_PPC64_GOT_DTPREL16_LO_DS
:
5029 case R_PPC64_GOT_DTPREL16_HI
:
5030 case R_PPC64_GOT_DTPREL16_HA
:
5031 tls_type
= TLS_TLS
| TLS_DTPREL
;
5033 sec
->has_tls_reloc
= 1;
5037 case R_PPC64_GOT16_DS
:
5038 case R_PPC64_GOT16_HA
:
5039 case R_PPC64_GOT16_HI
:
5040 case R_PPC64_GOT16_LO
:
5041 case R_PPC64_GOT16_LO_DS
:
5042 /* This symbol requires a global offset table entry. */
5043 sec
->has_toc_reloc
= 1;
5044 if (r_type
== R_PPC64_GOT_TLSLD16
5045 || r_type
== R_PPC64_GOT_TLSGD16
5046 || r_type
== R_PPC64_GOT_TPREL16_DS
5047 || r_type
== R_PPC64_GOT_DTPREL16_DS
5048 || r_type
== R_PPC64_GOT16
5049 || r_type
== R_PPC64_GOT16_DS
)
5051 htab
->do_multi_toc
= 1;
5052 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5055 if (ppc64_elf_tdata (abfd
)->got
== NULL
5056 && !create_got_section (abfd
, info
))
5061 struct ppc_link_hash_entry
*eh
;
5062 struct got_entry
*ent
;
5064 eh
= (struct ppc_link_hash_entry
*) h
;
5065 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5066 if (ent
->addend
== rel
->r_addend
5067 && ent
->owner
== abfd
5068 && ent
->tls_type
== tls_type
)
5072 bfd_size_type amt
= sizeof (*ent
);
5073 ent
= bfd_alloc (abfd
, amt
);
5076 ent
->next
= eh
->elf
.got
.glist
;
5077 ent
->addend
= rel
->r_addend
;
5079 ent
->tls_type
= tls_type
;
5080 ent
->is_indirect
= FALSE
;
5081 ent
->got
.refcount
= 0;
5082 eh
->elf
.got
.glist
= ent
;
5084 ent
->got
.refcount
+= 1;
5085 eh
->tls_mask
|= tls_type
;
5088 /* This is a global offset table entry for a local symbol. */
5089 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5090 rel
->r_addend
, tls_type
))
5094 case R_PPC64_PLT16_HA
:
5095 case R_PPC64_PLT16_HI
:
5096 case R_PPC64_PLT16_LO
:
5099 /* This symbol requires a procedure linkage table entry. We
5100 actually build the entry in adjust_dynamic_symbol,
5101 because this might be a case of linking PIC code without
5102 linking in any dynamic objects, in which case we don't
5103 need to generate a procedure linkage table after all. */
5106 /* It does not make sense to have a procedure linkage
5107 table entry for a local symbol. */
5108 bfd_set_error (bfd_error_bad_value
);
5113 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5116 if (h
->root
.root
.string
[0] == '.'
5117 && h
->root
.root
.string
[1] != '\0')
5118 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5122 /* The following relocations don't need to propagate the
5123 relocation if linking a shared object since they are
5124 section relative. */
5125 case R_PPC64_SECTOFF
:
5126 case R_PPC64_SECTOFF_LO
:
5127 case R_PPC64_SECTOFF_HI
:
5128 case R_PPC64_SECTOFF_HA
:
5129 case R_PPC64_SECTOFF_DS
:
5130 case R_PPC64_SECTOFF_LO_DS
:
5131 case R_PPC64_DTPREL16
:
5132 case R_PPC64_DTPREL16_LO
:
5133 case R_PPC64_DTPREL16_HI
:
5134 case R_PPC64_DTPREL16_HA
:
5135 case R_PPC64_DTPREL16_DS
:
5136 case R_PPC64_DTPREL16_LO_DS
:
5137 case R_PPC64_DTPREL16_HIGHER
:
5138 case R_PPC64_DTPREL16_HIGHERA
:
5139 case R_PPC64_DTPREL16_HIGHEST
:
5140 case R_PPC64_DTPREL16_HIGHESTA
:
5145 case R_PPC64_REL16_LO
:
5146 case R_PPC64_REL16_HI
:
5147 case R_PPC64_REL16_HA
:
5151 case R_PPC64_TOC16_DS
:
5152 htab
->do_multi_toc
= 1;
5153 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5154 case R_PPC64_TOC16_LO
:
5155 case R_PPC64_TOC16_HI
:
5156 case R_PPC64_TOC16_HA
:
5157 case R_PPC64_TOC16_LO_DS
:
5158 sec
->has_toc_reloc
= 1;
5161 /* This relocation describes the C++ object vtable hierarchy.
5162 Reconstruct it for later use during GC. */
5163 case R_PPC64_GNU_VTINHERIT
:
5164 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5168 /* This relocation describes which C++ vtable entries are actually
5169 used. Record for later use during GC. */
5170 case R_PPC64_GNU_VTENTRY
:
5171 BFD_ASSERT (h
!= NULL
);
5173 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5178 case R_PPC64_REL14_BRTAKEN
:
5179 case R_PPC64_REL14_BRNTAKEN
:
5181 asection
*dest
= NULL
;
5183 /* Heuristic: If jumping outside our section, chances are
5184 we are going to need a stub. */
5187 /* If the sym is weak it may be overridden later, so
5188 don't assume we know where a weak sym lives. */
5189 if (h
->root
.type
== bfd_link_hash_defined
)
5190 dest
= h
->root
.u
.def
.section
;
5194 Elf_Internal_Sym
*isym
;
5196 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5201 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5205 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5210 if (h
!= NULL
&& ifunc
== NULL
)
5212 /* We may need a .plt entry if the function this reloc
5213 refers to is in a shared lib. */
5214 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5217 if (h
->root
.root
.string
[0] == '.'
5218 && h
->root
.root
.string
[1] != '\0')
5219 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5220 if (h
== tga
|| h
== dottga
)
5221 sec
->has_tls_reloc
= 1;
5225 case R_PPC64_TPREL64
:
5226 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5227 if (!info
->executable
)
5228 info
->flags
|= DF_STATIC_TLS
;
5231 case R_PPC64_DTPMOD64
:
5232 if (rel
+ 1 < rel_end
5233 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5234 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5235 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5237 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5240 case R_PPC64_DTPREL64
:
5241 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5243 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5244 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5245 /* This is the second reloc of a dtpmod, dtprel pair.
5246 Don't mark with TLS_DTPREL. */
5250 sec
->has_tls_reloc
= 1;
5253 struct ppc_link_hash_entry
*eh
;
5254 eh
= (struct ppc_link_hash_entry
*) h
;
5255 eh
->tls_mask
|= tls_type
;
5258 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5259 rel
->r_addend
, tls_type
))
5262 ppc64_sec
= ppc64_elf_section_data (sec
);
5263 if (ppc64_sec
->sec_type
!= sec_toc
)
5267 /* One extra to simplify get_tls_mask. */
5268 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5269 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5270 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5272 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5273 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5274 if (ppc64_sec
->u
.toc
.add
== NULL
)
5276 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5277 ppc64_sec
->sec_type
= sec_toc
;
5279 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5280 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5281 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5283 /* Mark the second slot of a GD or LD entry.
5284 -1 to indicate GD and -2 to indicate LD. */
5285 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5286 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5287 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5288 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5291 case R_PPC64_TPREL16
:
5292 case R_PPC64_TPREL16_LO
:
5293 case R_PPC64_TPREL16_HI
:
5294 case R_PPC64_TPREL16_HA
:
5295 case R_PPC64_TPREL16_DS
:
5296 case R_PPC64_TPREL16_LO_DS
:
5297 case R_PPC64_TPREL16_HIGHER
:
5298 case R_PPC64_TPREL16_HIGHERA
:
5299 case R_PPC64_TPREL16_HIGHEST
:
5300 case R_PPC64_TPREL16_HIGHESTA
:
5303 if (!info
->executable
)
5304 info
->flags
|= DF_STATIC_TLS
;
5309 case R_PPC64_ADDR64
:
5310 if (opd_sym_map
!= NULL
5311 && rel
+ 1 < rel_end
5312 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5316 if (h
->root
.root
.string
[0] == '.'
5317 && h
->root
.root
.string
[1] != 0
5318 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5321 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5326 Elf_Internal_Sym
*isym
;
5328 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5333 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5334 if (s
!= NULL
&& s
!= sec
)
5335 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5343 case R_PPC64_ADDR14
:
5344 case R_PPC64_ADDR14_BRNTAKEN
:
5345 case R_PPC64_ADDR14_BRTAKEN
:
5346 case R_PPC64_ADDR16
:
5347 case R_PPC64_ADDR16_DS
:
5348 case R_PPC64_ADDR16_HA
:
5349 case R_PPC64_ADDR16_HI
:
5350 case R_PPC64_ADDR16_HIGHER
:
5351 case R_PPC64_ADDR16_HIGHERA
:
5352 case R_PPC64_ADDR16_HIGHEST
:
5353 case R_PPC64_ADDR16_HIGHESTA
:
5354 case R_PPC64_ADDR16_LO
:
5355 case R_PPC64_ADDR16_LO_DS
:
5356 case R_PPC64_ADDR24
:
5357 case R_PPC64_ADDR32
:
5358 case R_PPC64_UADDR16
:
5359 case R_PPC64_UADDR32
:
5360 case R_PPC64_UADDR64
:
5362 if (h
!= NULL
&& !info
->shared
)
5363 /* We may need a copy reloc. */
5366 /* Don't propagate .opd relocs. */
5367 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5370 /* If we are creating a shared library, and this is a reloc
5371 against a global symbol, or a non PC relative reloc
5372 against a local symbol, then we need to copy the reloc
5373 into the shared library. However, if we are linking with
5374 -Bsymbolic, we do not need to copy a reloc against a
5375 global symbol which is defined in an object we are
5376 including in the link (i.e., DEF_REGULAR is set). At
5377 this point we have not seen all the input files, so it is
5378 possible that DEF_REGULAR is not set now but will be set
5379 later (it is never cleared). In case of a weak definition,
5380 DEF_REGULAR may be cleared later by a strong definition in
5381 a shared library. We account for that possibility below by
5382 storing information in the dyn_relocs field of the hash
5383 table entry. A similar situation occurs when creating
5384 shared libraries and symbol visibility changes render the
5387 If on the other hand, we are creating an executable, we
5388 may need to keep relocations for symbols satisfied by a
5389 dynamic library if we manage to avoid copy relocs for the
5393 && (must_be_dyn_reloc (info
, r_type
)
5395 && (! info
->symbolic
5396 || h
->root
.type
== bfd_link_hash_defweak
5397 || !h
->def_regular
))))
5398 || (ELIMINATE_COPY_RELOCS
5401 && (h
->root
.type
== bfd_link_hash_defweak
5402 || !h
->def_regular
))
5406 struct ppc_dyn_relocs
*p
;
5407 struct ppc_dyn_relocs
**head
;
5409 /* We must copy these reloc types into the output file.
5410 Create a reloc section in dynobj and make room for
5414 sreloc
= _bfd_elf_make_dynamic_reloc_section
5415 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5421 /* If this is a global symbol, we count the number of
5422 relocations we need for this symbol. */
5425 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5429 /* Track dynamic relocs needed for local syms too.
5430 We really need local syms available to do this
5434 Elf_Internal_Sym
*isym
;
5436 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5441 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5445 vpp
= &elf_section_data (s
)->local_dynrel
;
5446 head
= (struct ppc_dyn_relocs
**) vpp
;
5450 if (p
== NULL
|| p
->sec
!= sec
)
5452 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5463 if (!must_be_dyn_reloc (info
, r_type
))
5476 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5477 of the code entry point, and its section. */
5480 opd_entry_value (asection
*opd_sec
,
5482 asection
**code_sec
,
5485 bfd
*opd_bfd
= opd_sec
->owner
;
5486 Elf_Internal_Rela
*relocs
;
5487 Elf_Internal_Rela
*lo
, *hi
, *look
;
5490 /* No relocs implies we are linking a --just-symbols object. */
5491 if (opd_sec
->reloc_count
== 0)
5495 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5496 return (bfd_vma
) -1;
5498 val
= bfd_get_64 (opd_bfd
, buf
);
5499 if (code_sec
!= NULL
)
5501 asection
*sec
, *likely
= NULL
;
5502 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5504 && (sec
->flags
& SEC_LOAD
) != 0
5505 && (sec
->flags
& SEC_ALLOC
) != 0)
5510 if (code_off
!= NULL
)
5511 *code_off
= val
- likely
->vma
;
5517 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5519 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5521 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5523 /* Go find the opd reloc at the sym address. */
5525 BFD_ASSERT (lo
!= NULL
);
5526 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5530 look
= lo
+ (hi
- lo
) / 2;
5531 if (look
->r_offset
< offset
)
5533 else if (look
->r_offset
> offset
)
5537 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5539 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5540 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5542 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5545 if (symndx
< symtab_hdr
->sh_info
)
5547 Elf_Internal_Sym
*sym
;
5549 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5552 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5553 symtab_hdr
->sh_info
,
5554 0, NULL
, NULL
, NULL
);
5557 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5561 val
= sym
->st_value
;
5562 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5563 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5567 struct elf_link_hash_entry
**sym_hashes
;
5568 struct elf_link_hash_entry
*rh
;
5570 sym_hashes
= elf_sym_hashes (opd_bfd
);
5571 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5572 rh
= elf_follow_link (rh
);
5573 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5574 || rh
->root
.type
== bfd_link_hash_defweak
);
5575 val
= rh
->root
.u
.def
.value
;
5576 sec
= rh
->root
.u
.def
.section
;
5578 val
+= look
->r_addend
;
5579 if (code_off
!= NULL
)
5581 if (code_sec
!= NULL
)
5583 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5584 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5593 /* Return true if symbol is defined in a regular object file. */
5596 is_static_defined (struct elf_link_hash_entry
*h
)
5598 return ((h
->root
.type
== bfd_link_hash_defined
5599 || h
->root
.type
== bfd_link_hash_defweak
)
5600 && h
->root
.u
.def
.section
!= NULL
5601 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5604 /* If FDH is a function descriptor symbol, return the associated code
5605 entry symbol if it is defined. Return NULL otherwise. */
5607 static struct ppc_link_hash_entry
*
5608 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5610 if (fdh
->is_func_descriptor
)
5612 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5613 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5614 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5620 /* If FH is a function code entry symbol, return the associated
5621 function descriptor symbol if it is defined. Return NULL otherwise. */
5623 static struct ppc_link_hash_entry
*
5624 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5627 && fh
->oh
->is_func_descriptor
)
5629 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5630 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5631 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5637 /* Mark all our entry sym sections, both opd and code section. */
5640 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5642 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5643 struct bfd_sym_chain
*sym
;
5648 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5650 struct ppc_link_hash_entry
*eh
, *fh
;
5653 eh
= (struct ppc_link_hash_entry
*)
5654 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5657 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5658 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5661 fh
= defined_code_entry (eh
);
5664 sec
= fh
->elf
.root
.u
.def
.section
;
5665 sec
->flags
|= SEC_KEEP
;
5667 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5668 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5669 eh
->elf
.root
.u
.def
.value
,
5670 &sec
, NULL
) != (bfd_vma
) -1)
5671 sec
->flags
|= SEC_KEEP
;
5673 sec
= eh
->elf
.root
.u
.def
.section
;
5674 sec
->flags
|= SEC_KEEP
;
5678 /* Mark sections containing dynamically referenced symbols. When
5679 building shared libraries, we must assume that any visible symbol is
5683 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5685 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5686 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5687 struct ppc_link_hash_entry
*fdh
;
5689 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5690 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5692 /* Dynamic linking info is on the func descriptor sym. */
5693 fdh
= defined_func_desc (eh
);
5697 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5698 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5699 && (eh
->elf
.ref_dynamic
5700 || (!info
->executable
5701 && eh
->elf
.def_regular
5702 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5703 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5706 struct ppc_link_hash_entry
*fh
;
5708 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5710 /* Function descriptor syms cause the associated
5711 function code sym section to be marked. */
5712 fh
= defined_code_entry (eh
);
5715 code_sec
= fh
->elf
.root
.u
.def
.section
;
5716 code_sec
->flags
|= SEC_KEEP
;
5718 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5719 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5720 eh
->elf
.root
.u
.def
.value
,
5721 &code_sec
, NULL
) != (bfd_vma
) -1)
5722 code_sec
->flags
|= SEC_KEEP
;
5728 /* Return the section that should be marked against GC for a given
5732 ppc64_elf_gc_mark_hook (asection
*sec
,
5733 struct bfd_link_info
*info
,
5734 Elf_Internal_Rela
*rel
,
5735 struct elf_link_hash_entry
*h
,
5736 Elf_Internal_Sym
*sym
)
5740 /* Syms return NULL if we're marking .opd, so we avoid marking all
5741 function sections, as all functions are referenced in .opd. */
5743 if (get_opd_info (sec
) != NULL
)
5748 enum elf_ppc64_reloc_type r_type
;
5749 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5751 r_type
= ELF64_R_TYPE (rel
->r_info
);
5754 case R_PPC64_GNU_VTINHERIT
:
5755 case R_PPC64_GNU_VTENTRY
:
5759 switch (h
->root
.type
)
5761 case bfd_link_hash_defined
:
5762 case bfd_link_hash_defweak
:
5763 eh
= (struct ppc_link_hash_entry
*) h
;
5764 fdh
= defined_func_desc (eh
);
5768 /* Function descriptor syms cause the associated
5769 function code sym section to be marked. */
5770 fh
= defined_code_entry (eh
);
5773 /* They also mark their opd section. */
5774 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5776 rsec
= fh
->elf
.root
.u
.def
.section
;
5778 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5779 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5780 eh
->elf
.root
.u
.def
.value
,
5781 &rsec
, NULL
) != (bfd_vma
) -1)
5782 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5784 rsec
= h
->root
.u
.def
.section
;
5787 case bfd_link_hash_common
:
5788 rsec
= h
->root
.u
.c
.p
->section
;
5792 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5798 struct _opd_sec_data
*opd
;
5800 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5801 opd
= get_opd_info (rsec
);
5802 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5806 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5813 /* Update the .got, .plt. and dynamic reloc reference counts for the
5814 section being removed. */
5817 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5818 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5820 struct ppc_link_hash_table
*htab
;
5821 Elf_Internal_Shdr
*symtab_hdr
;
5822 struct elf_link_hash_entry
**sym_hashes
;
5823 struct got_entry
**local_got_ents
;
5824 const Elf_Internal_Rela
*rel
, *relend
;
5826 if (info
->relocatable
)
5829 if ((sec
->flags
& SEC_ALLOC
) == 0)
5832 elf_section_data (sec
)->local_dynrel
= NULL
;
5834 htab
= ppc_hash_table (info
);
5838 symtab_hdr
= &elf_symtab_hdr (abfd
);
5839 sym_hashes
= elf_sym_hashes (abfd
);
5840 local_got_ents
= elf_local_got_ents (abfd
);
5842 relend
= relocs
+ sec
->reloc_count
;
5843 for (rel
= relocs
; rel
< relend
; rel
++)
5845 unsigned long r_symndx
;
5846 enum elf_ppc64_reloc_type r_type
;
5847 struct elf_link_hash_entry
*h
= NULL
;
5848 unsigned char tls_type
= 0;
5850 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5851 r_type
= ELF64_R_TYPE (rel
->r_info
);
5852 if (r_symndx
>= symtab_hdr
->sh_info
)
5854 struct ppc_link_hash_entry
*eh
;
5855 struct ppc_dyn_relocs
**pp
;
5856 struct ppc_dyn_relocs
*p
;
5858 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5859 h
= elf_follow_link (h
);
5860 eh
= (struct ppc_link_hash_entry
*) h
;
5862 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5865 /* Everything must go for SEC. */
5871 if (is_branch_reloc (r_type
))
5873 struct plt_entry
**ifunc
= NULL
;
5876 if (h
->type
== STT_GNU_IFUNC
)
5877 ifunc
= &h
->plt
.plist
;
5879 else if (local_got_ents
!= NULL
)
5881 struct plt_entry
**local_plt
= (struct plt_entry
**)
5882 (local_got_ents
+ symtab_hdr
->sh_info
);
5883 unsigned char *local_got_tls_masks
= (unsigned char *)
5884 (local_plt
+ symtab_hdr
->sh_info
);
5885 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5886 ifunc
= local_plt
+ r_symndx
;
5890 struct plt_entry
*ent
;
5892 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5893 if (ent
->addend
== rel
->r_addend
)
5897 if (ent
->plt
.refcount
> 0)
5898 ent
->plt
.refcount
-= 1;
5905 case R_PPC64_GOT_TLSLD16
:
5906 case R_PPC64_GOT_TLSLD16_LO
:
5907 case R_PPC64_GOT_TLSLD16_HI
:
5908 case R_PPC64_GOT_TLSLD16_HA
:
5909 tls_type
= TLS_TLS
| TLS_LD
;
5912 case R_PPC64_GOT_TLSGD16
:
5913 case R_PPC64_GOT_TLSGD16_LO
:
5914 case R_PPC64_GOT_TLSGD16_HI
:
5915 case R_PPC64_GOT_TLSGD16_HA
:
5916 tls_type
= TLS_TLS
| TLS_GD
;
5919 case R_PPC64_GOT_TPREL16_DS
:
5920 case R_PPC64_GOT_TPREL16_LO_DS
:
5921 case R_PPC64_GOT_TPREL16_HI
:
5922 case R_PPC64_GOT_TPREL16_HA
:
5923 tls_type
= TLS_TLS
| TLS_TPREL
;
5926 case R_PPC64_GOT_DTPREL16_DS
:
5927 case R_PPC64_GOT_DTPREL16_LO_DS
:
5928 case R_PPC64_GOT_DTPREL16_HI
:
5929 case R_PPC64_GOT_DTPREL16_HA
:
5930 tls_type
= TLS_TLS
| TLS_DTPREL
;
5934 case R_PPC64_GOT16_DS
:
5935 case R_PPC64_GOT16_HA
:
5936 case R_PPC64_GOT16_HI
:
5937 case R_PPC64_GOT16_LO
:
5938 case R_PPC64_GOT16_LO_DS
:
5941 struct got_entry
*ent
;
5946 ent
= local_got_ents
[r_symndx
];
5948 for (; ent
!= NULL
; ent
= ent
->next
)
5949 if (ent
->addend
== rel
->r_addend
5950 && ent
->owner
== abfd
5951 && ent
->tls_type
== tls_type
)
5955 if (ent
->got
.refcount
> 0)
5956 ent
->got
.refcount
-= 1;
5960 case R_PPC64_PLT16_HA
:
5961 case R_PPC64_PLT16_HI
:
5962 case R_PPC64_PLT16_LO
:
5966 case R_PPC64_REL14_BRNTAKEN
:
5967 case R_PPC64_REL14_BRTAKEN
:
5971 struct plt_entry
*ent
;
5973 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5974 if (ent
->addend
== rel
->r_addend
)
5976 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5977 ent
->plt
.refcount
-= 1;
5988 /* The maximum size of .sfpr. */
5989 #define SFPR_MAX (218*4)
5991 struct sfpr_def_parms
5993 const char name
[12];
5994 unsigned char lo
, hi
;
5995 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5996 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5999 /* Auto-generate _save*, _rest* functions in .sfpr. */
6002 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6004 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6006 size_t len
= strlen (parm
->name
);
6007 bfd_boolean writing
= FALSE
;
6013 memcpy (sym
, parm
->name
, len
);
6016 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6018 struct elf_link_hash_entry
*h
;
6020 sym
[len
+ 0] = i
/ 10 + '0';
6021 sym
[len
+ 1] = i
% 10 + '0';
6022 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6026 h
->root
.type
= bfd_link_hash_defined
;
6027 h
->root
.u
.def
.section
= htab
->sfpr
;
6028 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6031 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6033 if (htab
->sfpr
->contents
== NULL
)
6035 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6036 if (htab
->sfpr
->contents
== NULL
)
6042 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6044 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6046 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6047 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6055 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6057 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6062 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6064 p
= savegpr0 (abfd
, p
, r
);
6065 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6067 bfd_put_32 (abfd
, BLR
, p
);
6072 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6074 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6079 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6081 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6083 p
= restgpr0 (abfd
, p
, r
);
6084 bfd_put_32 (abfd
, MTLR_R0
, p
);
6088 p
= restgpr0 (abfd
, p
, 30);
6089 p
= restgpr0 (abfd
, p
, 31);
6091 bfd_put_32 (abfd
, BLR
, p
);
6096 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6098 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6103 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6105 p
= savegpr1 (abfd
, p
, r
);
6106 bfd_put_32 (abfd
, BLR
, p
);
6111 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6113 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6118 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6120 p
= restgpr1 (abfd
, p
, r
);
6121 bfd_put_32 (abfd
, BLR
, p
);
6126 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6128 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6133 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6135 p
= savefpr (abfd
, p
, r
);
6136 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6138 bfd_put_32 (abfd
, BLR
, p
);
6143 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6145 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6150 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6152 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6154 p
= restfpr (abfd
, p
, r
);
6155 bfd_put_32 (abfd
, MTLR_R0
, p
);
6159 p
= restfpr (abfd
, p
, 30);
6160 p
= restfpr (abfd
, p
, 31);
6162 bfd_put_32 (abfd
, BLR
, p
);
6167 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6169 p
= savefpr (abfd
, p
, r
);
6170 bfd_put_32 (abfd
, BLR
, p
);
6175 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6177 p
= restfpr (abfd
, p
, r
);
6178 bfd_put_32 (abfd
, BLR
, p
);
6183 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6185 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6187 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6192 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6194 p
= savevr (abfd
, p
, r
);
6195 bfd_put_32 (abfd
, BLR
, p
);
6200 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6202 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6204 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6209 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6211 p
= restvr (abfd
, p
, r
);
6212 bfd_put_32 (abfd
, BLR
, p
);
6216 /* Called via elf_link_hash_traverse to transfer dynamic linking
6217 information on function code symbol entries to their corresponding
6218 function descriptor symbol entries. */
6221 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6223 struct bfd_link_info
*info
;
6224 struct ppc_link_hash_table
*htab
;
6225 struct plt_entry
*ent
;
6226 struct ppc_link_hash_entry
*fh
;
6227 struct ppc_link_hash_entry
*fdh
;
6228 bfd_boolean force_local
;
6230 fh
= (struct ppc_link_hash_entry
*) h
;
6231 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6234 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6235 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6238 htab
= ppc_hash_table (info
);
6242 /* Resolve undefined references to dot-symbols as the value
6243 in the function descriptor, if we have one in a regular object.
6244 This is to satisfy cases like ".quad .foo". Calls to functions
6245 in dynamic objects are handled elsewhere. */
6246 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6247 && fh
->was_undefined
6248 && (fdh
= defined_func_desc (fh
)) != NULL
6249 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6250 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6251 fdh
->elf
.root
.u
.def
.value
,
6252 &fh
->elf
.root
.u
.def
.section
,
6253 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6255 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6256 fh
->elf
.forced_local
= 1;
6257 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6258 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6261 /* If this is a function code symbol, transfer dynamic linking
6262 information to the function descriptor symbol. */
6266 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6267 if (ent
->plt
.refcount
> 0)
6270 || fh
->elf
.root
.root
.string
[0] != '.'
6271 || fh
->elf
.root
.root
.string
[1] == '\0')
6274 /* Find the corresponding function descriptor symbol. Create it
6275 as undefined if necessary. */
6277 fdh
= lookup_fdh (fh
, htab
);
6279 && !info
->executable
6280 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6281 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6283 fdh
= make_fdh (info
, fh
);
6288 /* Fake function descriptors are made undefweak. If the function
6289 code symbol is strong undefined, make the fake sym the same.
6290 If the function code symbol is defined, then force the fake
6291 descriptor local; We can't support overriding of symbols in a
6292 shared library on a fake descriptor. */
6296 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6298 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6300 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6301 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6303 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6304 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6306 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6311 && !fdh
->elf
.forced_local
6312 && (!info
->executable
6313 || fdh
->elf
.def_dynamic
6314 || fdh
->elf
.ref_dynamic
6315 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6316 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6318 if (fdh
->elf
.dynindx
== -1)
6319 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6321 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6322 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6323 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6324 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6325 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6327 move_plt_plist (fh
, fdh
);
6328 fdh
->elf
.needs_plt
= 1;
6330 fdh
->is_func_descriptor
= 1;
6335 /* Now that the info is on the function descriptor, clear the
6336 function code sym info. Any function code syms for which we
6337 don't have a definition in a regular file, we force local.
6338 This prevents a shared library from exporting syms that have
6339 been imported from another library. Function code syms that
6340 are really in the library we must leave global to prevent the
6341 linker dragging in a definition from a static library. */
6342 force_local
= (!fh
->elf
.def_regular
6344 || !fdh
->elf
.def_regular
6345 || fdh
->elf
.forced_local
);
6346 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6351 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6352 this hook to a) provide some gcc support functions, and b) transfer
6353 dynamic linking information gathered so far on function code symbol
6354 entries, to their corresponding function descriptor symbol entries. */
6357 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6358 struct bfd_link_info
*info
)
6360 struct ppc_link_hash_table
*htab
;
6362 const struct sfpr_def_parms funcs
[] =
6364 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6365 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6366 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6367 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6368 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6369 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6370 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6371 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6372 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6373 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6374 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6375 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6378 htab
= ppc_hash_table (info
);
6382 if (htab
->sfpr
== NULL
)
6383 /* We don't have any relocs. */
6386 /* Provide any missing _save* and _rest* functions. */
6387 htab
->sfpr
->size
= 0;
6388 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6389 if (!sfpr_define (info
, &funcs
[i
]))
6392 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6394 if (htab
->sfpr
->size
== 0)
6395 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6400 /* Adjust a symbol defined by a dynamic object and referenced by a
6401 regular object. The current definition is in some section of the
6402 dynamic object, but we're not including those sections. We have to
6403 change the definition to something the rest of the link can
6407 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6408 struct elf_link_hash_entry
*h
)
6410 struct ppc_link_hash_table
*htab
;
6413 htab
= ppc_hash_table (info
);
6417 /* Deal with function syms. */
6418 if (h
->type
== STT_FUNC
6419 || h
->type
== STT_GNU_IFUNC
6422 /* Clear procedure linkage table information for any symbol that
6423 won't need a .plt entry. */
6424 struct plt_entry
*ent
;
6425 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6426 if (ent
->plt
.refcount
> 0)
6429 || (h
->type
!= STT_GNU_IFUNC
6430 && (SYMBOL_CALLS_LOCAL (info
, h
)
6431 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6432 && h
->root
.type
== bfd_link_hash_undefweak
))))
6434 h
->plt
.plist
= NULL
;
6439 h
->plt
.plist
= NULL
;
6441 /* If this is a weak symbol, and there is a real definition, the
6442 processor independent code will have arranged for us to see the
6443 real definition first, and we can just use the same value. */
6444 if (h
->u
.weakdef
!= NULL
)
6446 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6447 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6448 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6449 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6450 if (ELIMINATE_COPY_RELOCS
)
6451 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6455 /* If we are creating a shared library, we must presume that the
6456 only references to the symbol are via the global offset table.
6457 For such cases we need not do anything here; the relocations will
6458 be handled correctly by relocate_section. */
6462 /* If there are no references to this symbol that do not use the
6463 GOT, we don't need to generate a copy reloc. */
6464 if (!h
->non_got_ref
)
6467 /* Don't generate a copy reloc for symbols defined in the executable. */
6468 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6471 if (ELIMINATE_COPY_RELOCS
)
6473 struct ppc_link_hash_entry
* eh
;
6474 struct ppc_dyn_relocs
*p
;
6476 eh
= (struct ppc_link_hash_entry
*) h
;
6477 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6479 s
= p
->sec
->output_section
;
6480 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6484 /* If we didn't find any dynamic relocs in read-only sections, then
6485 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6493 if (h
->plt
.plist
!= NULL
)
6495 /* We should never get here, but unfortunately there are versions
6496 of gcc out there that improperly (for this ABI) put initialized
6497 function pointers, vtable refs and suchlike in read-only
6498 sections. Allow them to proceed, but warn that this might
6499 break at runtime. */
6500 (*_bfd_error_handler
)
6501 (_("copy reloc against `%s' requires lazy plt linking; "
6502 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6503 h
->root
.root
.string
);
6506 /* This is a reference to a symbol defined by a dynamic object which
6507 is not a function. */
6511 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6512 h
->root
.root
.string
);
6516 /* We must allocate the symbol in our .dynbss section, which will
6517 become part of the .bss section of the executable. There will be
6518 an entry for this symbol in the .dynsym section. The dynamic
6519 object will contain position independent code, so all references
6520 from the dynamic object to this symbol will go through the global
6521 offset table. The dynamic linker will use the .dynsym entry to
6522 determine the address it must put in the global offset table, so
6523 both the dynamic object and the regular object will refer to the
6524 same memory location for the variable. */
6526 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6527 to copy the initial value out of the dynamic object and into the
6528 runtime process image. We need to remember the offset into the
6529 .rela.bss section we are going to use. */
6530 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6532 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6538 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6541 /* If given a function descriptor symbol, hide both the function code
6542 sym and the descriptor. */
6544 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6545 struct elf_link_hash_entry
*h
,
6546 bfd_boolean force_local
)
6548 struct ppc_link_hash_entry
*eh
;
6549 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6551 eh
= (struct ppc_link_hash_entry
*) h
;
6552 if (eh
->is_func_descriptor
)
6554 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6559 struct ppc_link_hash_table
*htab
;
6562 /* We aren't supposed to use alloca in BFD because on
6563 systems which do not have alloca the version in libiberty
6564 calls xmalloc, which might cause the program to crash
6565 when it runs out of memory. This function doesn't have a
6566 return status, so there's no way to gracefully return an
6567 error. So cheat. We know that string[-1] can be safely
6568 accessed; It's either a string in an ELF string table,
6569 or allocated in an objalloc structure. */
6571 p
= eh
->elf
.root
.root
.string
- 1;
6574 htab
= ppc_hash_table (info
);
6578 fh
= (struct ppc_link_hash_entry
*)
6579 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6582 /* Unfortunately, if it so happens that the string we were
6583 looking for was allocated immediately before this string,
6584 then we overwrote the string terminator. That's the only
6585 reason the lookup should fail. */
6588 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6589 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6591 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6592 fh
= (struct ppc_link_hash_entry
*)
6593 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6602 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6607 get_sym_h (struct elf_link_hash_entry
**hp
,
6608 Elf_Internal_Sym
**symp
,
6610 unsigned char **tls_maskp
,
6611 Elf_Internal_Sym
**locsymsp
,
6612 unsigned long r_symndx
,
6615 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6617 if (r_symndx
>= symtab_hdr
->sh_info
)
6619 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6620 struct elf_link_hash_entry
*h
;
6622 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6623 h
= elf_follow_link (h
);
6631 if (symsecp
!= NULL
)
6633 asection
*symsec
= NULL
;
6634 if (h
->root
.type
== bfd_link_hash_defined
6635 || h
->root
.type
== bfd_link_hash_defweak
)
6636 symsec
= h
->root
.u
.def
.section
;
6640 if (tls_maskp
!= NULL
)
6642 struct ppc_link_hash_entry
*eh
;
6644 eh
= (struct ppc_link_hash_entry
*) h
;
6645 *tls_maskp
= &eh
->tls_mask
;
6650 Elf_Internal_Sym
*sym
;
6651 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6653 if (locsyms
== NULL
)
6655 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6656 if (locsyms
== NULL
)
6657 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6658 symtab_hdr
->sh_info
,
6659 0, NULL
, NULL
, NULL
);
6660 if (locsyms
== NULL
)
6662 *locsymsp
= locsyms
;
6664 sym
= locsyms
+ r_symndx
;
6672 if (symsecp
!= NULL
)
6673 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6675 if (tls_maskp
!= NULL
)
6677 struct got_entry
**lgot_ents
;
6678 unsigned char *tls_mask
;
6681 lgot_ents
= elf_local_got_ents (ibfd
);
6682 if (lgot_ents
!= NULL
)
6684 struct plt_entry
**local_plt
= (struct plt_entry
**)
6685 (lgot_ents
+ symtab_hdr
->sh_info
);
6686 unsigned char *lgot_masks
= (unsigned char *)
6687 (local_plt
+ symtab_hdr
->sh_info
);
6688 tls_mask
= &lgot_masks
[r_symndx
];
6690 *tls_maskp
= tls_mask
;
6696 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6697 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6698 type suitable for optimization, and 1 otherwise. */
6701 get_tls_mask (unsigned char **tls_maskp
,
6702 unsigned long *toc_symndx
,
6703 bfd_vma
*toc_addend
,
6704 Elf_Internal_Sym
**locsymsp
,
6705 const Elf_Internal_Rela
*rel
,
6708 unsigned long r_symndx
;
6710 struct elf_link_hash_entry
*h
;
6711 Elf_Internal_Sym
*sym
;
6715 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6716 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6719 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6721 || ppc64_elf_section_data (sec
) == NULL
6722 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6725 /* Look inside a TOC section too. */
6728 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6729 off
= h
->root
.u
.def
.value
;
6732 off
= sym
->st_value
;
6733 off
+= rel
->r_addend
;
6734 BFD_ASSERT (off
% 8 == 0);
6735 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6736 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6737 if (toc_symndx
!= NULL
)
6738 *toc_symndx
= r_symndx
;
6739 if (toc_addend
!= NULL
)
6740 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6741 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6743 if ((h
== NULL
|| is_static_defined (h
))
6744 && (next_r
== -1 || next_r
== -2))
6749 /* Adjust all global syms defined in opd sections. In gcc generated
6750 code for the old ABI, these will already have been done. */
6753 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6755 struct ppc_link_hash_entry
*eh
;
6757 struct _opd_sec_data
*opd
;
6759 if (h
->root
.type
== bfd_link_hash_indirect
)
6762 if (h
->root
.type
== bfd_link_hash_warning
)
6763 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6765 if (h
->root
.type
!= bfd_link_hash_defined
6766 && h
->root
.type
!= bfd_link_hash_defweak
)
6769 eh
= (struct ppc_link_hash_entry
*) h
;
6770 if (eh
->adjust_done
)
6773 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6774 opd
= get_opd_info (sym_sec
);
6775 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6777 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6780 /* This entry has been deleted. */
6781 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6784 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6785 if (elf_discarded_section (dsec
))
6787 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6791 eh
->elf
.root
.u
.def
.value
= 0;
6792 eh
->elf
.root
.u
.def
.section
= dsec
;
6795 eh
->elf
.root
.u
.def
.value
+= adjust
;
6796 eh
->adjust_done
= 1;
6801 /* Handles decrementing dynamic reloc counts for the reloc specified by
6802 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6803 have already been determined. */
6806 dec_dynrel_count (bfd_vma r_info
,
6808 struct bfd_link_info
*info
,
6809 Elf_Internal_Sym
**local_syms
,
6810 struct elf_link_hash_entry
*h
,
6813 enum elf_ppc64_reloc_type r_type
;
6814 struct ppc_dyn_relocs
*p
;
6815 struct ppc_dyn_relocs
**pp
;
6817 /* Can this reloc be dynamic? This switch, and later tests here
6818 should be kept in sync with the code in check_relocs. */
6819 r_type
= ELF64_R_TYPE (r_info
);
6825 case R_PPC64_TPREL16
:
6826 case R_PPC64_TPREL16_LO
:
6827 case R_PPC64_TPREL16_HI
:
6828 case R_PPC64_TPREL16_HA
:
6829 case R_PPC64_TPREL16_DS
:
6830 case R_PPC64_TPREL16_LO_DS
:
6831 case R_PPC64_TPREL16_HIGHER
:
6832 case R_PPC64_TPREL16_HIGHERA
:
6833 case R_PPC64_TPREL16_HIGHEST
:
6834 case R_PPC64_TPREL16_HIGHESTA
:
6838 case R_PPC64_TPREL64
:
6839 case R_PPC64_DTPMOD64
:
6840 case R_PPC64_DTPREL64
:
6841 case R_PPC64_ADDR64
:
6845 case R_PPC64_ADDR14
:
6846 case R_PPC64_ADDR14_BRNTAKEN
:
6847 case R_PPC64_ADDR14_BRTAKEN
:
6848 case R_PPC64_ADDR16
:
6849 case R_PPC64_ADDR16_DS
:
6850 case R_PPC64_ADDR16_HA
:
6851 case R_PPC64_ADDR16_HI
:
6852 case R_PPC64_ADDR16_HIGHER
:
6853 case R_PPC64_ADDR16_HIGHERA
:
6854 case R_PPC64_ADDR16_HIGHEST
:
6855 case R_PPC64_ADDR16_HIGHESTA
:
6856 case R_PPC64_ADDR16_LO
:
6857 case R_PPC64_ADDR16_LO_DS
:
6858 case R_PPC64_ADDR24
:
6859 case R_PPC64_ADDR32
:
6860 case R_PPC64_UADDR16
:
6861 case R_PPC64_UADDR32
:
6862 case R_PPC64_UADDR64
:
6867 if (local_syms
!= NULL
)
6869 unsigned long r_symndx
;
6870 Elf_Internal_Sym
*sym
;
6871 bfd
*ibfd
= sec
->owner
;
6873 r_symndx
= ELF64_R_SYM (r_info
);
6874 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6879 && (must_be_dyn_reloc (info
, r_type
)
6882 || h
->root
.type
== bfd_link_hash_defweak
6883 || !h
->def_regular
))))
6884 || (ELIMINATE_COPY_RELOCS
6887 && (h
->root
.type
== bfd_link_hash_defweak
6888 || !h
->def_regular
)))
6894 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6897 if (sym_sec
!= NULL
)
6899 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6900 pp
= (struct ppc_dyn_relocs
**) vpp
;
6904 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6905 pp
= (struct ppc_dyn_relocs
**) vpp
;
6908 /* elf_gc_sweep may have already removed all dyn relocs associated
6909 with local syms for a given section. Don't report a dynreloc
6915 while ((p
= *pp
) != NULL
)
6919 if (!must_be_dyn_reloc (info
, r_type
))
6929 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6931 bfd_set_error (bfd_error_bad_value
);
6935 /* Remove unused Official Procedure Descriptor entries. Currently we
6936 only remove those associated with functions in discarded link-once
6937 sections, or weakly defined functions that have been overridden. It
6938 would be possible to remove many more entries for statically linked
6942 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6945 bfd_boolean some_edited
= FALSE
;
6946 asection
*need_pad
= NULL
;
6948 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6951 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6952 Elf_Internal_Shdr
*symtab_hdr
;
6953 Elf_Internal_Sym
*local_syms
;
6955 struct _opd_sec_data
*opd
;
6956 bfd_boolean need_edit
, add_aux_fields
;
6957 bfd_size_type cnt_16b
= 0;
6959 if (!is_ppc64_elf (ibfd
))
6962 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6963 if (sec
== NULL
|| sec
->size
== 0)
6966 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6969 if (sec
->output_section
== bfd_abs_section_ptr
)
6972 /* Look through the section relocs. */
6973 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6977 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6979 /* Read the relocations. */
6980 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6982 if (relstart
== NULL
)
6985 /* First run through the relocs to check they are sane, and to
6986 determine whether we need to edit this opd section. */
6990 relend
= relstart
+ sec
->reloc_count
;
6991 for (rel
= relstart
; rel
< relend
; )
6993 enum elf_ppc64_reloc_type r_type
;
6994 unsigned long r_symndx
;
6996 struct elf_link_hash_entry
*h
;
6997 Elf_Internal_Sym
*sym
;
6999 /* .opd contains a regular array of 16 or 24 byte entries. We're
7000 only interested in the reloc pointing to a function entry
7002 if (rel
->r_offset
!= offset
7003 || rel
+ 1 >= relend
7004 || (rel
+ 1)->r_offset
!= offset
+ 8)
7006 /* If someone messes with .opd alignment then after a
7007 "ld -r" we might have padding in the middle of .opd.
7008 Also, there's nothing to prevent someone putting
7009 something silly in .opd with the assembler. No .opd
7010 optimization for them! */
7012 (*_bfd_error_handler
)
7013 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7018 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7019 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7021 (*_bfd_error_handler
)
7022 (_("%B: unexpected reloc type %u in .opd section"),
7028 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7029 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7033 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7035 const char *sym_name
;
7037 sym_name
= h
->root
.root
.string
;
7039 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7042 (*_bfd_error_handler
)
7043 (_("%B: undefined sym `%s' in .opd section"),
7049 /* opd entries are always for functions defined in the
7050 current input bfd. If the symbol isn't defined in the
7051 input bfd, then we won't be using the function in this
7052 bfd; It must be defined in a linkonce section in another
7053 bfd, or is weak. It's also possible that we are
7054 discarding the function due to a linker script /DISCARD/,
7055 which we test for via the output_section. */
7056 if (sym_sec
->owner
!= ibfd
7057 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7062 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7064 if (sec
->size
== offset
+ 24)
7069 if (rel
== relend
&& sec
->size
== offset
+ 16)
7077 if (rel
->r_offset
== offset
+ 24)
7079 else if (rel
->r_offset
!= offset
+ 16)
7081 else if (rel
+ 1 < relend
7082 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7083 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7088 else if (rel
+ 2 < relend
7089 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7090 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7099 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7101 if (need_edit
|| add_aux_fields
)
7103 Elf_Internal_Rela
*write_rel
;
7104 Elf_Internal_Shdr
*rel_hdr
;
7105 bfd_byte
*rptr
, *wptr
;
7106 bfd_byte
*new_contents
;
7111 new_contents
= NULL
;
7112 amt
= sec
->size
* sizeof (long) / 8;
7113 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7114 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7115 if (opd
->adjust
== NULL
)
7117 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7119 /* This seems a waste of time as input .opd sections are all
7120 zeros as generated by gcc, but I suppose there's no reason
7121 this will always be so. We might start putting something in
7122 the third word of .opd entries. */
7123 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7126 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7131 if (local_syms
!= NULL
7132 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7134 if (elf_section_data (sec
)->relocs
!= relstart
)
7138 sec
->contents
= loc
;
7139 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7142 elf_section_data (sec
)->relocs
= relstart
;
7144 new_contents
= sec
->contents
;
7147 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7148 if (new_contents
== NULL
)
7152 wptr
= new_contents
;
7153 rptr
= sec
->contents
;
7155 write_rel
= relstart
;
7159 for (rel
= relstart
; rel
< relend
; rel
++)
7161 unsigned long r_symndx
;
7163 struct elf_link_hash_entry
*h
;
7164 Elf_Internal_Sym
*sym
;
7166 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7167 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7171 if (rel
->r_offset
== offset
)
7173 struct ppc_link_hash_entry
*fdh
= NULL
;
7175 /* See if the .opd entry is full 24 byte or
7176 16 byte (with fd_aux entry overlapped with next
7179 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7180 || (rel
+ 3 < relend
7181 && rel
[2].r_offset
== offset
+ 16
7182 && rel
[3].r_offset
== offset
+ 24
7183 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7184 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7188 && h
->root
.root
.string
[0] == '.')
7190 struct ppc_link_hash_table
*htab
;
7192 htab
= ppc_hash_table (info
);
7194 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7197 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7198 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7202 skip
= (sym_sec
->owner
!= ibfd
7203 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7206 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7208 /* Arrange for the function descriptor sym
7210 fdh
->elf
.root
.u
.def
.value
= 0;
7211 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7213 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7217 /* We'll be keeping this opd entry. */
7221 /* Redefine the function descriptor symbol to
7222 this location in the opd section. It is
7223 necessary to update the value here rather
7224 than using an array of adjustments as we do
7225 for local symbols, because various places
7226 in the generic ELF code use the value
7227 stored in u.def.value. */
7228 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7229 fdh
->adjust_done
= 1;
7232 /* Local syms are a bit tricky. We could
7233 tweak them as they can be cached, but
7234 we'd need to look through the local syms
7235 for the function descriptor sym which we
7236 don't have at the moment. So keep an
7237 array of adjustments. */
7238 opd
->adjust
[rel
->r_offset
/ 8]
7239 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7242 memcpy (wptr
, rptr
, opd_ent_size
);
7243 wptr
+= opd_ent_size
;
7244 if (add_aux_fields
&& opd_ent_size
== 16)
7246 memset (wptr
, '\0', 8);
7250 rptr
+= opd_ent_size
;
7251 offset
+= opd_ent_size
;
7257 && !info
->relocatable
7258 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7264 /* We need to adjust any reloc offsets to point to the
7265 new opd entries. While we're at it, we may as well
7266 remove redundant relocs. */
7267 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7268 if (write_rel
!= rel
)
7269 memcpy (write_rel
, rel
, sizeof (*rel
));
7274 sec
->size
= wptr
- new_contents
;
7275 sec
->reloc_count
= write_rel
- relstart
;
7278 free (sec
->contents
);
7279 sec
->contents
= new_contents
;
7282 /* Fudge the header size too, as this is used later in
7283 elf_bfd_final_link if we are emitting relocs. */
7284 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7285 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7288 else if (elf_section_data (sec
)->relocs
!= relstart
)
7291 if (local_syms
!= NULL
7292 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7294 if (!info
->keep_memory
)
7297 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7302 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7304 /* If we are doing a final link and the last .opd entry is just 16 byte
7305 long, add a 8 byte padding after it. */
7306 if (need_pad
!= NULL
&& !info
->relocatable
)
7310 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7312 BFD_ASSERT (need_pad
->size
> 0);
7314 p
= bfd_malloc (need_pad
->size
+ 8);
7318 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7319 p
, 0, need_pad
->size
))
7322 need_pad
->contents
= p
;
7323 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7327 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7331 need_pad
->contents
= p
;
7334 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7335 need_pad
->size
+= 8;
7341 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7344 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7345 int no_tls_get_addr_opt
,
7348 struct ppc_link_hash_table
*htab
;
7350 htab
= ppc_hash_table (info
);
7355 htab
->do_multi_toc
= 0;
7356 else if (!htab
->do_multi_toc
)
7359 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7360 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7361 FALSE
, FALSE
, TRUE
));
7362 /* Move dynamic linking info to the function descriptor sym. */
7363 if (htab
->tls_get_addr
!= NULL
)
7364 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7365 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7366 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7367 FALSE
, FALSE
, TRUE
));
7368 if (!no_tls_get_addr_opt
)
7370 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7372 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7373 FALSE
, FALSE
, TRUE
);
7375 func_desc_adjust (opt
, info
);
7376 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7377 FALSE
, FALSE
, TRUE
);
7379 && (opt_fd
->root
.type
== bfd_link_hash_defined
7380 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7382 /* If glibc supports an optimized __tls_get_addr call stub,
7383 signalled by the presence of __tls_get_addr_opt, and we'll
7384 be calling __tls_get_addr via a plt call stub, then
7385 make __tls_get_addr point to __tls_get_addr_opt. */
7386 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7387 if (htab
->elf
.dynamic_sections_created
7389 && (tga_fd
->type
== STT_FUNC
7390 || tga_fd
->needs_plt
)
7391 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7392 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7393 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7395 struct plt_entry
*ent
;
7397 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7398 if (ent
->plt
.refcount
> 0)
7402 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7403 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7404 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7405 if (opt_fd
->dynindx
!= -1)
7407 /* Use __tls_get_addr_opt in dynamic relocations. */
7408 opt_fd
->dynindx
= -1;
7409 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7410 opt_fd
->dynstr_index
);
7411 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7414 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7415 tga
= &htab
->tls_get_addr
->elf
;
7416 if (opt
!= NULL
&& tga
!= NULL
)
7418 tga
->root
.type
= bfd_link_hash_indirect
;
7419 tga
->root
.u
.i
.link
= &opt
->root
;
7420 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7421 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7423 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7425 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7426 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7427 if (htab
->tls_get_addr
!= NULL
)
7429 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7430 htab
->tls_get_addr
->is_func
= 1;
7436 no_tls_get_addr_opt
= TRUE
;
7438 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7439 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7442 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7446 branch_reloc_hash_match (const bfd
*ibfd
,
7447 const Elf_Internal_Rela
*rel
,
7448 const struct ppc_link_hash_entry
*hash1
,
7449 const struct ppc_link_hash_entry
*hash2
)
7451 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7452 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7453 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7455 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7457 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7458 struct elf_link_hash_entry
*h
;
7460 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7461 h
= elf_follow_link (h
);
7462 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7468 /* Run through all the TLS relocs looking for optimization
7469 opportunities. The linker has been hacked (see ppc64elf.em) to do
7470 a preliminary section layout so that we know the TLS segment
7471 offsets. We can't optimize earlier because some optimizations need
7472 to know the tp offset, and we need to optimize before allocating
7473 dynamic relocations. */
7476 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7480 struct ppc_link_hash_table
*htab
;
7481 unsigned char *toc_ref
;
7484 if (info
->relocatable
|| !info
->executable
)
7487 htab
= ppc_hash_table (info
);
7491 /* Make two passes over the relocs. On the first pass, mark toc
7492 entries involved with tls relocs, and check that tls relocs
7493 involved in setting up a tls_get_addr call are indeed followed by
7494 such a call. If they are not, we can't do any tls optimization.
7495 On the second pass twiddle tls_mask flags to notify
7496 relocate_section that optimization can be done, and adjust got
7497 and plt refcounts. */
7499 for (pass
= 0; pass
< 2; ++pass
)
7500 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7502 Elf_Internal_Sym
*locsyms
= NULL
;
7503 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7505 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7506 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7508 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7509 bfd_boolean found_tls_get_addr_arg
= 0;
7511 /* Read the relocations. */
7512 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7514 if (relstart
== NULL
)
7517 relend
= relstart
+ sec
->reloc_count
;
7518 for (rel
= relstart
; rel
< relend
; rel
++)
7520 enum elf_ppc64_reloc_type r_type
;
7521 unsigned long r_symndx
;
7522 struct elf_link_hash_entry
*h
;
7523 Elf_Internal_Sym
*sym
;
7525 unsigned char *tls_mask
;
7526 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7528 bfd_boolean ok_tprel
, is_local
;
7529 long toc_ref_index
= 0;
7530 int expecting_tls_get_addr
= 0;
7531 bfd_boolean ret
= FALSE
;
7533 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7534 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7538 if (elf_section_data (sec
)->relocs
!= relstart
)
7540 if (toc_ref
!= NULL
)
7543 && (elf_symtab_hdr (ibfd
).contents
7544 != (unsigned char *) locsyms
))
7551 if (h
->root
.type
== bfd_link_hash_defined
7552 || h
->root
.type
== bfd_link_hash_defweak
)
7553 value
= h
->root
.u
.def
.value
;
7554 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7558 found_tls_get_addr_arg
= 0;
7563 /* Symbols referenced by TLS relocs must be of type
7564 STT_TLS. So no need for .opd local sym adjust. */
7565 value
= sym
->st_value
;
7574 && h
->root
.type
== bfd_link_hash_undefweak
)
7578 value
+= sym_sec
->output_offset
;
7579 value
+= sym_sec
->output_section
->vma
;
7580 value
-= htab
->elf
.tls_sec
->vma
;
7581 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7582 < (bfd_vma
) 1 << 32);
7586 r_type
= ELF64_R_TYPE (rel
->r_info
);
7587 /* If this section has old-style __tls_get_addr calls
7588 without marker relocs, then check that each
7589 __tls_get_addr call reloc is preceded by a reloc
7590 that conceivably belongs to the __tls_get_addr arg
7591 setup insn. If we don't find matching arg setup
7592 relocs, don't do any tls optimization. */
7594 && sec
->has_tls_get_addr_call
7596 && (h
== &htab
->tls_get_addr
->elf
7597 || h
== &htab
->tls_get_addr_fd
->elf
)
7598 && !found_tls_get_addr_arg
7599 && is_branch_reloc (r_type
))
7601 info
->callbacks
->minfo (_("%C __tls_get_addr lost arg, "
7602 "TLS optimization disabled\n"),
7603 ibfd
, sec
, rel
->r_offset
);
7608 found_tls_get_addr_arg
= 0;
7611 case R_PPC64_GOT_TLSLD16
:
7612 case R_PPC64_GOT_TLSLD16_LO
:
7613 expecting_tls_get_addr
= 1;
7614 found_tls_get_addr_arg
= 1;
7617 case R_PPC64_GOT_TLSLD16_HI
:
7618 case R_PPC64_GOT_TLSLD16_HA
:
7619 /* These relocs should never be against a symbol
7620 defined in a shared lib. Leave them alone if
7621 that turns out to be the case. */
7628 tls_type
= TLS_TLS
| TLS_LD
;
7631 case R_PPC64_GOT_TLSGD16
:
7632 case R_PPC64_GOT_TLSGD16_LO
:
7633 expecting_tls_get_addr
= 1;
7634 found_tls_get_addr_arg
= 1;
7637 case R_PPC64_GOT_TLSGD16_HI
:
7638 case R_PPC64_GOT_TLSGD16_HA
:
7644 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7646 tls_type
= TLS_TLS
| TLS_GD
;
7649 case R_PPC64_GOT_TPREL16_DS
:
7650 case R_PPC64_GOT_TPREL16_LO_DS
:
7651 case R_PPC64_GOT_TPREL16_HI
:
7652 case R_PPC64_GOT_TPREL16_HA
:
7657 tls_clear
= TLS_TPREL
;
7658 tls_type
= TLS_TLS
| TLS_TPREL
;
7665 found_tls_get_addr_arg
= 1;
7670 case R_PPC64_TOC16_LO
:
7671 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7674 /* Mark this toc entry as referenced by a TLS
7675 code sequence. We can do that now in the
7676 case of R_PPC64_TLS, and after checking for
7677 tls_get_addr for the TOC16 relocs. */
7678 if (toc_ref
== NULL
)
7679 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7680 if (toc_ref
== NULL
)
7684 value
= h
->root
.u
.def
.value
;
7686 value
= sym
->st_value
;
7687 value
+= rel
->r_addend
;
7688 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7689 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7690 if (r_type
== R_PPC64_TLS
7691 || r_type
== R_PPC64_TLSGD
7692 || r_type
== R_PPC64_TLSLD
)
7694 toc_ref
[toc_ref_index
] = 1;
7698 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7703 expecting_tls_get_addr
= 2;
7706 case R_PPC64_TPREL64
:
7710 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7715 tls_set
= TLS_EXPLICIT
;
7716 tls_clear
= TLS_TPREL
;
7721 case R_PPC64_DTPMOD64
:
7725 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7727 if (rel
+ 1 < relend
7729 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7730 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7734 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7737 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7746 tls_set
= TLS_EXPLICIT
;
7757 if (!expecting_tls_get_addr
7758 || !sec
->has_tls_get_addr_call
)
7761 if (rel
+ 1 < relend
7762 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7764 htab
->tls_get_addr_fd
))
7766 if (expecting_tls_get_addr
== 2)
7768 /* Check for toc tls entries. */
7769 unsigned char *toc_tls
;
7772 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7777 if (toc_tls
!= NULL
)
7779 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
7780 found_tls_get_addr_arg
= 1;
7782 toc_ref
[toc_ref_index
] = 1;
7788 if (expecting_tls_get_addr
!= 1)
7791 /* Uh oh, we didn't find the expected call. We
7792 could just mark this symbol to exclude it
7793 from tls optimization but it's safer to skip
7794 the entire optimization. */
7795 info
->callbacks
->minfo (_("%C arg lost __tls_get_addr, "
7796 "TLS optimization disabled\n"),
7797 ibfd
, sec
, rel
->r_offset
);
7802 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7804 struct plt_entry
*ent
;
7805 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7808 if (ent
->addend
== 0)
7810 if (ent
->plt
.refcount
> 0)
7812 ent
->plt
.refcount
-= 1;
7813 expecting_tls_get_addr
= 0;
7819 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7821 struct plt_entry
*ent
;
7822 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7825 if (ent
->addend
== 0)
7827 if (ent
->plt
.refcount
> 0)
7828 ent
->plt
.refcount
-= 1;
7836 if ((tls_set
& TLS_EXPLICIT
) == 0)
7838 struct got_entry
*ent
;
7840 /* Adjust got entry for this reloc. */
7844 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7846 for (; ent
!= NULL
; ent
= ent
->next
)
7847 if (ent
->addend
== rel
->r_addend
7848 && ent
->owner
== ibfd
7849 && ent
->tls_type
== tls_type
)
7856 /* We managed to get rid of a got entry. */
7857 if (ent
->got
.refcount
> 0)
7858 ent
->got
.refcount
-= 1;
7863 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7864 we'll lose one or two dyn relocs. */
7865 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7869 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7871 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7877 *tls_mask
|= tls_set
;
7878 *tls_mask
&= ~tls_clear
;
7881 if (elf_section_data (sec
)->relocs
!= relstart
)
7886 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7888 if (!info
->keep_memory
)
7891 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7895 if (toc_ref
!= NULL
)
7900 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7901 the values of any global symbols in a toc section that has been
7902 edited. Globals in toc sections should be a rarity, so this function
7903 sets a flag if any are found in toc sections other than the one just
7904 edited, so that futher hash table traversals can be avoided. */
7906 struct adjust_toc_info
7909 unsigned long *skip
;
7910 bfd_boolean global_toc_syms
;
7913 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7916 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7918 struct ppc_link_hash_entry
*eh
;
7919 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7922 if (h
->root
.type
== bfd_link_hash_indirect
)
7925 if (h
->root
.type
== bfd_link_hash_warning
)
7926 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7928 if (h
->root
.type
!= bfd_link_hash_defined
7929 && h
->root
.type
!= bfd_link_hash_defweak
)
7932 eh
= (struct ppc_link_hash_entry
*) h
;
7933 if (eh
->adjust_done
)
7936 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7938 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7939 i
= toc_inf
->toc
->rawsize
>> 3;
7941 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7943 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
7945 (*_bfd_error_handler
)
7946 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7949 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
7950 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7953 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7954 eh
->adjust_done
= 1;
7956 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7957 toc_inf
->global_toc_syms
= TRUE
;
7962 /* Examine all relocs referencing .toc sections in order to remove
7963 unused .toc entries. */
7966 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7969 struct adjust_toc_info toc_inf
;
7970 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7972 htab
->do_toc_opt
= 1;
7973 toc_inf
.global_toc_syms
= TRUE
;
7974 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7976 asection
*toc
, *sec
;
7977 Elf_Internal_Shdr
*symtab_hdr
;
7978 Elf_Internal_Sym
*local_syms
;
7979 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
7980 unsigned long *skip
, *drop
;
7981 unsigned char *used
;
7982 unsigned char *keep
, last
, some_unused
;
7984 if (!is_ppc64_elf (ibfd
))
7987 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7990 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7991 || elf_discarded_section (toc
))
7996 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7998 /* Look at sections dropped from the final link. */
8001 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8003 if (sec
->reloc_count
== 0
8004 || !elf_discarded_section (sec
)
8005 || get_opd_info (sec
)
8006 || (sec
->flags
& SEC_ALLOC
) == 0
8007 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8010 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8011 if (relstart
== NULL
)
8014 /* Run through the relocs to see which toc entries might be
8016 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8018 enum elf_ppc64_reloc_type r_type
;
8019 unsigned long r_symndx
;
8021 struct elf_link_hash_entry
*h
;
8022 Elf_Internal_Sym
*sym
;
8025 r_type
= ELF64_R_TYPE (rel
->r_info
);
8032 case R_PPC64_TOC16_LO
:
8033 case R_PPC64_TOC16_HI
:
8034 case R_PPC64_TOC16_HA
:
8035 case R_PPC64_TOC16_DS
:
8036 case R_PPC64_TOC16_LO_DS
:
8040 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8041 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8049 val
= h
->root
.u
.def
.value
;
8051 val
= sym
->st_value
;
8052 val
+= rel
->r_addend
;
8054 if (val
>= toc
->size
)
8057 /* Anything in the toc ought to be aligned to 8 bytes.
8058 If not, don't mark as unused. */
8064 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8069 skip
[val
>> 3] = ref_from_discarded
;
8072 if (elf_section_data (sec
)->relocs
!= relstart
)
8076 /* For largetoc loads of address constants, we can convert
8077 . addis rx,2,addr@got@ha
8078 . ld ry,addr@got@l(rx)
8080 . addis rx,2,addr@toc@ha
8081 . addi ry,rx,addr@toc@l
8082 when addr is within 2G of the toc pointer. This then means
8083 that the word storing "addr" in the toc is no longer needed. */
8085 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8086 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8087 && toc
->reloc_count
!= 0)
8089 /* Read toc relocs. */
8090 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8092 if (toc_relocs
== NULL
)
8095 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8097 enum elf_ppc64_reloc_type r_type
;
8098 unsigned long r_symndx
;
8100 struct elf_link_hash_entry
*h
;
8101 Elf_Internal_Sym
*sym
;
8104 r_type
= ELF64_R_TYPE (rel
->r_info
);
8105 if (r_type
!= R_PPC64_ADDR64
)
8108 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8109 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8114 || elf_discarded_section (sym_sec
))
8117 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8122 if (h
->type
== STT_GNU_IFUNC
)
8124 val
= h
->root
.u
.def
.value
;
8128 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8130 val
= sym
->st_value
;
8132 val
+= rel
->r_addend
;
8133 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8135 /* We don't yet know the exact toc pointer value, but we
8136 know it will be somewhere in the toc section. Don't
8137 optimize if the difference from any possible toc
8138 pointer is outside [ff..f80008000, 7fff7fff]. */
8139 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8140 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8143 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8144 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8149 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8154 skip
[rel
->r_offset
>> 3]
8155 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8162 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8166 if (local_syms
!= NULL
8167 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8171 && elf_section_data (sec
)->relocs
!= relstart
)
8173 if (toc_relocs
!= NULL
8174 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8181 /* Now check all kept sections that might reference the toc.
8182 Check the toc itself last. */
8183 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8186 sec
= (sec
== toc
? NULL
8187 : sec
->next
== NULL
? toc
8188 : sec
->next
== toc
&& toc
->next
? toc
->next
8193 if (sec
->reloc_count
== 0
8194 || elf_discarded_section (sec
)
8195 || get_opd_info (sec
)
8196 || (sec
->flags
& SEC_ALLOC
) == 0
8197 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8200 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8202 if (relstart
== NULL
)
8205 /* Mark toc entries referenced as used. */
8208 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8210 enum elf_ppc64_reloc_type r_type
;
8211 unsigned long r_symndx
;
8213 struct elf_link_hash_entry
*h
;
8214 Elf_Internal_Sym
*sym
;
8217 r_type
= ELF64_R_TYPE (rel
->r_info
);
8221 case R_PPC64_TOC16_LO
:
8222 case R_PPC64_TOC16_HI
:
8223 case R_PPC64_TOC16_HA
:
8224 case R_PPC64_TOC16_DS
:
8225 case R_PPC64_TOC16_LO_DS
:
8226 /* In case we're taking addresses of toc entries. */
8227 case R_PPC64_ADDR64
:
8234 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8235 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8246 val
= h
->root
.u
.def
.value
;
8248 val
= sym
->st_value
;
8249 val
+= rel
->r_addend
;
8251 if (val
>= toc
->size
)
8254 if ((skip
[val
>> 3] & can_optimize
) != 0)
8261 case R_PPC64_TOC16_HA
:
8264 case R_PPC64_TOC16_LO_DS
:
8265 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8266 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8268 if ((opc
& (0x3f << 2)) == (58u << 2))
8273 /* Wrong sort of reloc, or not a ld. We may
8274 as well clear ref_from_discarded too. */
8279 /* For the toc section, we only mark as used if
8280 this entry itself isn't unused. */
8283 && (used
[rel
->r_offset
>> 3]
8284 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8285 /* Do all the relocs again, to catch reference
8293 if (elf_section_data (sec
)->relocs
!= relstart
)
8297 /* Merge the used and skip arrays. Assume that TOC
8298 doublewords not appearing as either used or unused belong
8299 to to an entry more than one doubleword in size. */
8300 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8301 drop
< skip
+ (toc
->size
+ 7) / 8;
8306 *drop
&= ~ref_from_discarded
;
8307 if ((*drop
& can_optimize
) != 0)
8314 last
= ref_from_discarded
;
8324 bfd_byte
*contents
, *src
;
8326 Elf_Internal_Sym
*sym
;
8327 bfd_boolean local_toc_syms
= FALSE
;
8329 /* Shuffle the toc contents, and at the same time convert the
8330 skip array from booleans into offsets. */
8331 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8334 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8336 for (src
= contents
, off
= 0, drop
= skip
;
8337 src
< contents
+ toc
->size
;
8340 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8345 memcpy (src
- off
, src
, 8);
8349 toc
->rawsize
= toc
->size
;
8350 toc
->size
= src
- contents
- off
;
8352 /* Adjust addends for relocs against the toc section sym,
8353 and optimize any accesses we can. */
8354 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8356 if (sec
->reloc_count
== 0
8357 || elf_discarded_section (sec
))
8360 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8362 if (relstart
== NULL
)
8365 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8367 enum elf_ppc64_reloc_type r_type
;
8368 unsigned long r_symndx
;
8370 struct elf_link_hash_entry
*h
;
8373 r_type
= ELF64_R_TYPE (rel
->r_info
);
8380 case R_PPC64_TOC16_LO
:
8381 case R_PPC64_TOC16_HI
:
8382 case R_PPC64_TOC16_HA
:
8383 case R_PPC64_TOC16_DS
:
8384 case R_PPC64_TOC16_LO_DS
:
8385 case R_PPC64_ADDR64
:
8389 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8390 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8398 val
= h
->root
.u
.def
.value
;
8401 val
= sym
->st_value
;
8403 local_toc_syms
= TRUE
;
8406 val
+= rel
->r_addend
;
8408 if (val
> toc
->rawsize
)
8410 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8412 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8414 Elf_Internal_Rela
*tocrel
8415 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8416 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8420 case R_PPC64_TOC16_HA
:
8421 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8424 case R_PPC64_TOC16_LO_DS
:
8425 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8431 rel
->r_addend
= tocrel
->r_addend
;
8432 elf_section_data (sec
)->relocs
= relstart
;
8436 if (h
!= NULL
|| sym
->st_value
!= 0)
8439 rel
->r_addend
-= skip
[val
>> 3];
8440 elf_section_data (sec
)->relocs
= relstart
;
8443 if (elf_section_data (sec
)->relocs
!= relstart
)
8447 /* We shouldn't have local or global symbols defined in the TOC,
8448 but handle them anyway. */
8449 if (local_syms
!= NULL
)
8450 for (sym
= local_syms
;
8451 sym
< local_syms
+ symtab_hdr
->sh_info
;
8453 if (sym
->st_value
!= 0
8454 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8458 if (sym
->st_value
> toc
->rawsize
)
8459 i
= toc
->rawsize
>> 3;
8461 i
= sym
->st_value
>> 3;
8463 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8466 (*_bfd_error_handler
)
8467 (_("%s defined on removed toc entry"),
8468 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8471 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8472 sym
->st_value
= (bfd_vma
) i
<< 3;
8475 sym
->st_value
-= skip
[i
];
8476 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8479 /* Adjust any global syms defined in this toc input section. */
8480 if (toc_inf
.global_toc_syms
)
8483 toc_inf
.skip
= skip
;
8484 toc_inf
.global_toc_syms
= FALSE
;
8485 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8489 if (toc
->reloc_count
!= 0)
8491 Elf_Internal_Shdr
*rel_hdr
;
8492 Elf_Internal_Rela
*wrel
;
8495 /* Remove unused toc relocs, and adjust those we keep. */
8496 if (toc_relocs
== NULL
)
8497 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8499 if (toc_relocs
== NULL
)
8503 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8504 if ((skip
[rel
->r_offset
>> 3]
8505 & (ref_from_discarded
| can_optimize
)) == 0)
8507 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8508 wrel
->r_info
= rel
->r_info
;
8509 wrel
->r_addend
= rel
->r_addend
;
8512 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8513 &local_syms
, NULL
, NULL
))
8516 elf_section_data (toc
)->relocs
= toc_relocs
;
8517 toc
->reloc_count
= wrel
- toc_relocs
;
8518 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8519 sz
= rel_hdr
->sh_entsize
;
8520 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8523 else if (toc_relocs
!= NULL
8524 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8527 if (local_syms
!= NULL
8528 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8530 if (!info
->keep_memory
)
8533 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8541 /* Return true iff input section I references the TOC using
8542 instructions limited to +/-32k offsets. */
8545 ppc64_elf_has_small_toc_reloc (asection
*i
)
8547 return (is_ppc64_elf (i
->owner
)
8548 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8551 /* Allocate space for one GOT entry. */
8554 allocate_got (struct elf_link_hash_entry
*h
,
8555 struct bfd_link_info
*info
,
8556 struct got_entry
*gent
)
8558 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8560 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8561 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8563 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8564 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8565 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8567 gent
->got
.offset
= got
->size
;
8568 got
->size
+= entsize
;
8570 dyn
= htab
->elf
.dynamic_sections_created
;
8572 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8573 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8574 || h
->root
.type
!= bfd_link_hash_undefweak
))
8576 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8577 relgot
->size
+= rentsize
;
8579 else if (h
->type
== STT_GNU_IFUNC
)
8581 asection
*relgot
= htab
->reliplt
;
8582 relgot
->size
+= rentsize
;
8583 htab
->got_reli_size
+= rentsize
;
8587 /* This function merges got entries in the same toc group. */
8590 merge_got_entries (struct got_entry
**pent
)
8592 struct got_entry
*ent
, *ent2
;
8594 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8595 if (!ent
->is_indirect
)
8596 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8597 if (!ent2
->is_indirect
8598 && ent2
->addend
== ent
->addend
8599 && ent2
->tls_type
== ent
->tls_type
8600 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8602 ent2
->is_indirect
= TRUE
;
8603 ent2
->got
.ent
= ent
;
8607 /* Allocate space in .plt, .got and associated reloc sections for
8611 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8613 struct bfd_link_info
*info
;
8614 struct ppc_link_hash_table
*htab
;
8616 struct ppc_link_hash_entry
*eh
;
8617 struct ppc_dyn_relocs
*p
;
8618 struct got_entry
**pgent
, *gent
;
8620 if (h
->root
.type
== bfd_link_hash_indirect
)
8623 if (h
->root
.type
== bfd_link_hash_warning
)
8624 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8626 info
= (struct bfd_link_info
*) inf
;
8627 htab
= ppc_hash_table (info
);
8631 if ((htab
->elf
.dynamic_sections_created
8633 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8634 || h
->type
== STT_GNU_IFUNC
)
8636 struct plt_entry
*pent
;
8637 bfd_boolean doneone
= FALSE
;
8638 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8639 if (pent
->plt
.refcount
> 0)
8641 if (!htab
->elf
.dynamic_sections_created
8642 || h
->dynindx
== -1)
8645 pent
->plt
.offset
= s
->size
;
8646 s
->size
+= PLT_ENTRY_SIZE
;
8651 /* If this is the first .plt entry, make room for the special
8655 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8657 pent
->plt
.offset
= s
->size
;
8659 /* Make room for this entry. */
8660 s
->size
+= PLT_ENTRY_SIZE
;
8662 /* Make room for the .glink code. */
8665 s
->size
+= GLINK_CALL_STUB_SIZE
;
8666 /* We need bigger stubs past index 32767. */
8667 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8671 /* We also need to make an entry in the .rela.plt section. */
8674 s
->size
+= sizeof (Elf64_External_Rela
);
8678 pent
->plt
.offset
= (bfd_vma
) -1;
8681 h
->plt
.plist
= NULL
;
8687 h
->plt
.plist
= NULL
;
8691 eh
= (struct ppc_link_hash_entry
*) h
;
8692 /* Run through the TLS GD got entries first if we're changing them
8694 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8695 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8696 if (gent
->got
.refcount
> 0
8697 && (gent
->tls_type
& TLS_GD
) != 0)
8699 /* This was a GD entry that has been converted to TPREL. If
8700 there happens to be a TPREL entry we can use that one. */
8701 struct got_entry
*ent
;
8702 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8703 if (ent
->got
.refcount
> 0
8704 && (ent
->tls_type
& TLS_TPREL
) != 0
8705 && ent
->addend
== gent
->addend
8706 && ent
->owner
== gent
->owner
)
8708 gent
->got
.refcount
= 0;
8712 /* If not, then we'll be using our own TPREL entry. */
8713 if (gent
->got
.refcount
!= 0)
8714 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8717 /* Remove any list entry that won't generate a word in the GOT before
8718 we call merge_got_entries. Otherwise we risk merging to empty
8720 pgent
= &h
->got
.glist
;
8721 while ((gent
= *pgent
) != NULL
)
8722 if (gent
->got
.refcount
> 0)
8724 if ((gent
->tls_type
& TLS_LD
) != 0
8727 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8728 *pgent
= gent
->next
;
8731 pgent
= &gent
->next
;
8734 *pgent
= gent
->next
;
8736 if (!htab
->do_multi_toc
)
8737 merge_got_entries (&h
->got
.glist
);
8739 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8740 if (!gent
->is_indirect
)
8742 /* Make sure this symbol is output as a dynamic symbol.
8743 Undefined weak syms won't yet be marked as dynamic,
8744 nor will all TLS symbols. */
8745 if (h
->dynindx
== -1
8747 && h
->type
!= STT_GNU_IFUNC
8748 && htab
->elf
.dynamic_sections_created
)
8750 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8754 if (!is_ppc64_elf (gent
->owner
))
8757 allocate_got (h
, info
, gent
);
8760 if (eh
->dyn_relocs
== NULL
8761 || (!htab
->elf
.dynamic_sections_created
8762 && h
->type
!= STT_GNU_IFUNC
))
8765 /* In the shared -Bsymbolic case, discard space allocated for
8766 dynamic pc-relative relocs against symbols which turn out to be
8767 defined in regular objects. For the normal shared case, discard
8768 space for relocs that have become local due to symbol visibility
8773 /* Relocs that use pc_count are those that appear on a call insn,
8774 or certain REL relocs (see must_be_dyn_reloc) that can be
8775 generated via assembly. We want calls to protected symbols to
8776 resolve directly to the function rather than going via the plt.
8777 If people want function pointer comparisons to work as expected
8778 then they should avoid writing weird assembly. */
8779 if (SYMBOL_CALLS_LOCAL (info
, h
))
8781 struct ppc_dyn_relocs
**pp
;
8783 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8785 p
->count
-= p
->pc_count
;
8794 /* Also discard relocs on undefined weak syms with non-default
8796 if (eh
->dyn_relocs
!= NULL
8797 && h
->root
.type
== bfd_link_hash_undefweak
)
8799 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8800 eh
->dyn_relocs
= NULL
;
8802 /* Make sure this symbol is output as a dynamic symbol.
8803 Undefined weak syms won't yet be marked as dynamic. */
8804 else if (h
->dynindx
== -1
8805 && !h
->forced_local
)
8807 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8812 else if (h
->type
== STT_GNU_IFUNC
)
8814 if (!h
->non_got_ref
)
8815 eh
->dyn_relocs
= NULL
;
8817 else if (ELIMINATE_COPY_RELOCS
)
8819 /* For the non-shared case, discard space for relocs against
8820 symbols which turn out to need copy relocs or are not
8826 /* Make sure this symbol is output as a dynamic symbol.
8827 Undefined weak syms won't yet be marked as dynamic. */
8828 if (h
->dynindx
== -1
8829 && !h
->forced_local
)
8831 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8835 /* If that succeeded, we know we'll be keeping all the
8837 if (h
->dynindx
!= -1)
8841 eh
->dyn_relocs
= NULL
;
8846 /* Finally, allocate space. */
8847 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8849 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8850 if (!htab
->elf
.dynamic_sections_created
)
8851 sreloc
= htab
->reliplt
;
8852 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8858 /* Find any dynamic relocs that apply to read-only sections. */
8861 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8863 struct ppc_link_hash_entry
*eh
;
8864 struct ppc_dyn_relocs
*p
;
8866 if (h
->root
.type
== bfd_link_hash_warning
)
8867 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8869 eh
= (struct ppc_link_hash_entry
*) h
;
8870 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8872 asection
*s
= p
->sec
->output_section
;
8874 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8876 struct bfd_link_info
*info
= inf
;
8878 info
->flags
|= DF_TEXTREL
;
8880 /* Not an error, just cut short the traversal. */
8887 /* Set the sizes of the dynamic sections. */
8890 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8891 struct bfd_link_info
*info
)
8893 struct ppc_link_hash_table
*htab
;
8898 struct got_entry
*first_tlsld
;
8900 htab
= ppc_hash_table (info
);
8904 dynobj
= htab
->elf
.dynobj
;
8908 if (htab
->elf
.dynamic_sections_created
)
8910 /* Set the contents of the .interp section to the interpreter. */
8911 if (info
->executable
)
8913 s
= bfd_get_section_by_name (dynobj
, ".interp");
8916 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8917 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8921 /* Set up .got offsets for local syms, and space for local dynamic
8923 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8925 struct got_entry
**lgot_ents
;
8926 struct got_entry
**end_lgot_ents
;
8927 struct plt_entry
**local_plt
;
8928 struct plt_entry
**end_local_plt
;
8929 unsigned char *lgot_masks
;
8930 bfd_size_type locsymcount
;
8931 Elf_Internal_Shdr
*symtab_hdr
;
8934 if (!is_ppc64_elf (ibfd
))
8937 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8939 struct ppc_dyn_relocs
*p
;
8941 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8943 if (!bfd_is_abs_section (p
->sec
)
8944 && bfd_is_abs_section (p
->sec
->output_section
))
8946 /* Input section has been discarded, either because
8947 it is a copy of a linkonce section or due to
8948 linker script /DISCARD/, so we'll be discarding
8951 else if (p
->count
!= 0)
8953 srel
= elf_section_data (p
->sec
)->sreloc
;
8954 if (!htab
->elf
.dynamic_sections_created
)
8955 srel
= htab
->reliplt
;
8956 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8957 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8958 info
->flags
|= DF_TEXTREL
;
8963 lgot_ents
= elf_local_got_ents (ibfd
);
8967 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8968 locsymcount
= symtab_hdr
->sh_info
;
8969 end_lgot_ents
= lgot_ents
+ locsymcount
;
8970 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8971 end_local_plt
= local_plt
+ locsymcount
;
8972 lgot_masks
= (unsigned char *) end_local_plt
;
8973 s
= ppc64_elf_tdata (ibfd
)->got
;
8974 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8975 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8977 struct got_entry
**pent
, *ent
;
8980 while ((ent
= *pent
) != NULL
)
8981 if (ent
->got
.refcount
> 0)
8983 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8985 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8990 unsigned int num
= 1;
8991 ent
->got
.offset
= s
->size
;
8992 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8996 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8997 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
9000 += num
* sizeof (Elf64_External_Rela
);
9002 += num
* sizeof (Elf64_External_Rela
);
9011 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9012 for (; local_plt
< end_local_plt
; ++local_plt
)
9014 struct plt_entry
*ent
;
9016 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9017 if (ent
->plt
.refcount
> 0)
9020 ent
->plt
.offset
= s
->size
;
9021 s
->size
+= PLT_ENTRY_SIZE
;
9023 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
9026 ent
->plt
.offset
= (bfd_vma
) -1;
9030 /* Allocate global sym .plt and .got entries, and space for global
9031 sym dynamic relocs. */
9032 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9035 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9037 struct got_entry
*ent
;
9039 if (!is_ppc64_elf (ibfd
))
9042 ent
= ppc64_tlsld_got (ibfd
);
9043 if (ent
->got
.refcount
> 0)
9045 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9047 ent
->is_indirect
= TRUE
;
9048 ent
->got
.ent
= first_tlsld
;
9052 if (first_tlsld
== NULL
)
9054 s
= ppc64_elf_tdata (ibfd
)->got
;
9055 ent
->got
.offset
= s
->size
;
9060 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9061 srel
->size
+= sizeof (Elf64_External_Rela
);
9066 ent
->got
.offset
= (bfd_vma
) -1;
9069 /* We now have determined the sizes of the various dynamic sections.
9070 Allocate memory for them. */
9072 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9074 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9077 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9078 /* These haven't been allocated yet; don't strip. */
9080 else if (s
== htab
->got
9084 || s
== htab
->dynbss
)
9086 /* Strip this section if we don't need it; see the
9089 else if (CONST_STRNEQ (s
->name
, ".rela"))
9093 if (s
!= htab
->relplt
)
9096 /* We use the reloc_count field as a counter if we need
9097 to copy relocs into the output file. */
9103 /* It's not one of our sections, so don't allocate space. */
9109 /* If we don't need this section, strip it from the
9110 output file. This is mostly to handle .rela.bss and
9111 .rela.plt. We must create both sections in
9112 create_dynamic_sections, because they must be created
9113 before the linker maps input sections to output
9114 sections. The linker does that before
9115 adjust_dynamic_symbol is called, and it is that
9116 function which decides whether anything needs to go
9117 into these sections. */
9118 s
->flags
|= SEC_EXCLUDE
;
9122 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9125 /* Allocate memory for the section contents. We use bfd_zalloc
9126 here in case unused entries are not reclaimed before the
9127 section's contents are written out. This should not happen,
9128 but this way if it does we get a R_PPC64_NONE reloc in .rela
9129 sections instead of garbage.
9130 We also rely on the section contents being zero when writing
9132 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9133 if (s
->contents
== NULL
)
9137 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9139 if (!is_ppc64_elf (ibfd
))
9142 s
= ppc64_elf_tdata (ibfd
)->got
;
9143 if (s
!= NULL
&& s
!= htab
->got
)
9146 s
->flags
|= SEC_EXCLUDE
;
9149 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9150 if (s
->contents
== NULL
)
9154 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9158 s
->flags
|= SEC_EXCLUDE
;
9161 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9162 if (s
->contents
== NULL
)
9170 if (htab
->elf
.dynamic_sections_created
)
9172 /* Add some entries to the .dynamic section. We fill in the
9173 values later, in ppc64_elf_finish_dynamic_sections, but we
9174 must add the entries now so that we get the correct size for
9175 the .dynamic section. The DT_DEBUG entry is filled in by the
9176 dynamic linker and used by the debugger. */
9177 #define add_dynamic_entry(TAG, VAL) \
9178 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9180 if (info
->executable
)
9182 if (!add_dynamic_entry (DT_DEBUG
, 0))
9186 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9188 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9189 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9190 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9191 || !add_dynamic_entry (DT_JMPREL
, 0)
9192 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9198 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9199 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9203 if (!htab
->no_tls_get_addr_opt
9204 && htab
->tls_get_addr_fd
!= NULL
9205 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9206 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9211 if (!add_dynamic_entry (DT_RELA
, 0)
9212 || !add_dynamic_entry (DT_RELASZ
, 0)
9213 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9216 /* If any dynamic relocs apply to a read-only section,
9217 then we need a DT_TEXTREL entry. */
9218 if ((info
->flags
& DF_TEXTREL
) == 0)
9219 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9221 if ((info
->flags
& DF_TEXTREL
) != 0)
9223 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9228 #undef add_dynamic_entry
9233 /* Determine the type of stub needed, if any, for a call. */
9235 static inline enum ppc_stub_type
9236 ppc_type_of_stub (asection
*input_sec
,
9237 const Elf_Internal_Rela
*rel
,
9238 struct ppc_link_hash_entry
**hash
,
9239 struct plt_entry
**plt_ent
,
9240 bfd_vma destination
)
9242 struct ppc_link_hash_entry
*h
= *hash
;
9244 bfd_vma branch_offset
;
9245 bfd_vma max_branch_offset
;
9246 enum elf_ppc64_reloc_type r_type
;
9250 struct plt_entry
*ent
;
9251 struct ppc_link_hash_entry
*fdh
= h
;
9253 && h
->oh
->is_func_descriptor
)
9255 fdh
= ppc_follow_link (h
->oh
);
9259 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9260 if (ent
->addend
== rel
->r_addend
9261 && ent
->plt
.offset
!= (bfd_vma
) -1)
9264 return ppc_stub_plt_call
;
9267 /* Here, we know we don't have a plt entry. If we don't have a
9268 either a defined function descriptor or a defined entry symbol
9269 in a regular object file, then it is pointless trying to make
9270 any other type of stub. */
9271 if (!is_static_defined (&fdh
->elf
)
9272 && !is_static_defined (&h
->elf
))
9273 return ppc_stub_none
;
9275 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9277 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9278 struct plt_entry
**local_plt
= (struct plt_entry
**)
9279 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9280 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9282 if (local_plt
[r_symndx
] != NULL
)
9284 struct plt_entry
*ent
;
9286 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9287 if (ent
->addend
== rel
->r_addend
9288 && ent
->plt
.offset
!= (bfd_vma
) -1)
9291 return ppc_stub_plt_call
;
9296 /* Determine where the call point is. */
9297 location
= (input_sec
->output_offset
9298 + input_sec
->output_section
->vma
9301 branch_offset
= destination
- location
;
9302 r_type
= ELF64_R_TYPE (rel
->r_info
);
9304 /* Determine if a long branch stub is needed. */
9305 max_branch_offset
= 1 << 25;
9306 if (r_type
!= R_PPC64_REL24
)
9307 max_branch_offset
= 1 << 15;
9309 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9310 /* We need a stub. Figure out whether a long_branch or plt_branch
9312 return ppc_stub_long_branch
;
9314 return ppc_stub_none
;
9317 /* Build a .plt call stub. */
9319 static inline bfd_byte
*
9320 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9322 #define PPC_LO(v) ((v) & 0xffff)
9323 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9324 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9326 if (PPC_HA (offset
) != 0)
9330 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9331 r
[1].r_offset
= r
[0].r_offset
+ 8;
9332 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9333 r
[1].r_addend
= r
[0].r_addend
;
9334 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9336 r
[2].r_offset
= r
[1].r_offset
+ 4;
9337 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9338 r
[2].r_addend
= r
[0].r_addend
;
9342 r
[2].r_offset
= r
[1].r_offset
+ 8;
9343 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9344 r
[2].r_addend
= r
[0].r_addend
+ 8;
9345 r
[3].r_offset
= r
[2].r_offset
+ 4;
9346 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9347 r
[3].r_addend
= r
[0].r_addend
+ 16;
9350 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9351 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9352 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9353 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9355 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9358 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9359 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9360 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9361 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9368 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9369 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9371 r
[1].r_offset
= r
[0].r_offset
+ 4;
9372 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9373 r
[1].r_addend
= r
[0].r_addend
;
9377 r
[1].r_offset
= r
[0].r_offset
+ 8;
9378 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9379 r
[1].r_addend
= r
[0].r_addend
+ 16;
9380 r
[2].r_offset
= r
[1].r_offset
+ 4;
9381 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9382 r
[2].r_addend
= r
[0].r_addend
+ 8;
9385 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9386 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9387 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9389 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9392 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9393 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9394 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9395 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9400 /* Build a special .plt call stub for __tls_get_addr. */
9402 #define LD_R11_0R3 0xe9630000
9403 #define LD_R12_0R3 0xe9830000
9404 #define MR_R0_R3 0x7c601b78
9405 #define CMPDI_R11_0 0x2c2b0000
9406 #define ADD_R3_R12_R13 0x7c6c6a14
9407 #define BEQLR 0x4d820020
9408 #define MR_R3_R0 0x7c030378
9409 #define MFLR_R11 0x7d6802a6
9410 #define STD_R11_0R1 0xf9610000
9411 #define BCTRL 0x4e800421
9412 #define LD_R11_0R1 0xe9610000
9413 #define LD_R2_0R1 0xe8410000
9414 #define MTLR_R11 0x7d6803a6
9416 static inline bfd_byte
*
9417 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9418 Elf_Internal_Rela
*r
)
9420 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9421 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9422 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9423 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9424 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9425 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9426 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9427 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9428 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9431 r
[0].r_offset
+= 9 * 4;
9432 p
= build_plt_stub (obfd
, p
, offset
, r
);
9433 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9435 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9436 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9437 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9438 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9443 static Elf_Internal_Rela
*
9444 get_relocs (asection
*sec
, int count
)
9446 Elf_Internal_Rela
*relocs
;
9447 struct bfd_elf_section_data
*elfsec_data
;
9449 elfsec_data
= elf_section_data (sec
);
9450 relocs
= elfsec_data
->relocs
;
9453 bfd_size_type relsize
;
9454 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9455 relocs
= bfd_alloc (sec
->owner
, relsize
);
9458 elfsec_data
->relocs
= relocs
;
9459 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9460 sizeof (Elf_Internal_Shdr
));
9461 if (elfsec_data
->rela
.hdr
== NULL
)
9463 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9464 * sizeof (Elf64_External_Rela
));
9465 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9466 sec
->reloc_count
= 0;
9468 relocs
+= sec
->reloc_count
;
9469 sec
->reloc_count
+= count
;
9474 get_r2off (struct ppc_link_hash_table
*htab
,
9475 struct ppc_stub_hash_entry
*stub_entry
)
9477 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9481 /* Support linking -R objects. Get the toc pointer from the
9484 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9485 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9487 if (strcmp (opd
->name
, ".opd") != 0
9488 || opd
->reloc_count
!= 0)
9490 (*_bfd_error_handler
) (_("cannot find opd entry toc for %s"),
9491 stub_entry
->h
->elf
.root
.root
.string
);
9492 bfd_set_error (bfd_error_bad_value
);
9495 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9497 r2off
= bfd_get_64 (opd
->owner
, buf
);
9498 r2off
-= elf_gp (stub_entry
->id_sec
->output_section
->owner
);
9500 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9505 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9507 struct ppc_stub_hash_entry
*stub_entry
;
9508 struct ppc_branch_hash_entry
*br_entry
;
9509 struct bfd_link_info
*info
;
9510 struct ppc_link_hash_table
*htab
;
9515 Elf_Internal_Rela
*r
;
9518 /* Massage our args to the form they really have. */
9519 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9522 htab
= ppc_hash_table (info
);
9526 /* Make a note of the offset within the stubs for this entry. */
9527 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9528 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9530 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9531 switch (stub_entry
->stub_type
)
9533 case ppc_stub_long_branch
:
9534 case ppc_stub_long_branch_r2off
:
9535 /* Branches are relative. This is where we are going to. */
9536 off
= dest
= (stub_entry
->target_value
9537 + stub_entry
->target_section
->output_offset
9538 + stub_entry
->target_section
->output_section
->vma
);
9540 /* And this is where we are coming from. */
9541 off
-= (stub_entry
->stub_offset
9542 + stub_entry
->stub_sec
->output_offset
9543 + stub_entry
->stub_sec
->output_section
->vma
);
9546 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9548 bfd_vma r2off
= get_r2off (htab
, stub_entry
);
9552 htab
->stub_error
= TRUE
;
9555 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9558 if (PPC_HA (r2off
) != 0)
9561 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9564 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9568 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9570 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9572 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9573 stub_entry
->root
.string
);
9574 htab
->stub_error
= TRUE
;
9578 if (info
->emitrelocations
)
9580 r
= get_relocs (stub_entry
->stub_sec
, 1);
9583 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9584 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9586 if (stub_entry
->h
!= NULL
)
9588 struct elf_link_hash_entry
**hashes
;
9589 unsigned long symndx
;
9590 struct ppc_link_hash_entry
*h
;
9592 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9595 bfd_size_type hsize
;
9597 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9598 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9601 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9602 htab
->stub_globals
= 1;
9604 symndx
= htab
->stub_globals
++;
9606 hashes
[symndx
] = &h
->elf
;
9607 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9608 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9609 h
= ppc_follow_link (h
->oh
);
9610 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9611 /* H is an opd symbol. The addend must be zero. */
9615 off
= (h
->elf
.root
.u
.def
.value
9616 + h
->elf
.root
.u
.def
.section
->output_offset
9617 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9624 case ppc_stub_plt_branch
:
9625 case ppc_stub_plt_branch_r2off
:
9626 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9627 stub_entry
->root
.string
+ 9,
9629 if (br_entry
== NULL
)
9631 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9632 stub_entry
->root
.string
);
9633 htab
->stub_error
= TRUE
;
9637 dest
= (stub_entry
->target_value
9638 + stub_entry
->target_section
->output_offset
9639 + stub_entry
->target_section
->output_section
->vma
);
9641 bfd_put_64 (htab
->brlt
->owner
, dest
,
9642 htab
->brlt
->contents
+ br_entry
->offset
);
9644 if (br_entry
->iter
== htab
->stub_iteration
)
9648 if (htab
->relbrlt
!= NULL
)
9650 /* Create a reloc for the branch lookup table entry. */
9651 Elf_Internal_Rela rela
;
9654 rela
.r_offset
= (br_entry
->offset
9655 + htab
->brlt
->output_offset
9656 + htab
->brlt
->output_section
->vma
);
9657 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9658 rela
.r_addend
= dest
;
9660 rl
= htab
->relbrlt
->contents
;
9661 rl
+= (htab
->relbrlt
->reloc_count
++
9662 * sizeof (Elf64_External_Rela
));
9663 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9665 else if (info
->emitrelocations
)
9667 r
= get_relocs (htab
->brlt
, 1);
9670 /* brlt, being SEC_LINKER_CREATED does not go through the
9671 normal reloc processing. Symbols and offsets are not
9672 translated from input file to output file form, so
9673 set up the offset per the output file. */
9674 r
->r_offset
= (br_entry
->offset
9675 + htab
->brlt
->output_offset
9676 + htab
->brlt
->output_section
->vma
);
9677 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9682 dest
= (br_entry
->offset
9683 + htab
->brlt
->output_offset
9684 + htab
->brlt
->output_section
->vma
);
9687 - elf_gp (htab
->brlt
->output_section
->owner
)
9688 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9690 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9692 (*_bfd_error_handler
)
9693 (_("linkage table error against `%s'"),
9694 stub_entry
->root
.string
);
9695 bfd_set_error (bfd_error_bad_value
);
9696 htab
->stub_error
= TRUE
;
9700 if (info
->emitrelocations
)
9702 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9705 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9706 if (bfd_big_endian (info
->output_bfd
))
9708 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9710 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9711 r
[0].r_addend
= dest
;
9712 if (PPC_HA (off
) != 0)
9714 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9715 r
[1].r_offset
= r
[0].r_offset
+ 4;
9716 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9717 r
[1].r_addend
= r
[0].r_addend
;
9721 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9723 if (PPC_HA (off
) != 0)
9726 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9728 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9733 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9738 bfd_vma r2off
= get_r2off (htab
, stub_entry
);
9742 htab
->stub_error
= TRUE
;
9746 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9749 if (PPC_HA (off
) != 0)
9752 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9754 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9759 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9763 if (PPC_HA (r2off
) != 0)
9766 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9769 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9772 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9774 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9777 case ppc_stub_plt_call
:
9778 if (stub_entry
->h
!= NULL
9779 && stub_entry
->h
->is_func_descriptor
9780 && stub_entry
->h
->oh
!= NULL
)
9782 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9784 /* If the old-ABI "dot-symbol" is undefined make it weak so
9785 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9786 FIXME: We used to define the symbol on one of the call
9787 stubs instead, which is why we test symbol section id
9788 against htab->top_id in various places. Likely all
9789 these checks could now disappear. */
9790 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9791 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9792 /* Stop undo_symbol_twiddle changing it back to undefined. */
9793 fh
->was_undefined
= 0;
9796 /* Now build the stub. */
9797 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9798 if (dest
>= (bfd_vma
) -2)
9802 if (!htab
->elf
.dynamic_sections_created
9803 || stub_entry
->h
== NULL
9804 || stub_entry
->h
->elf
.dynindx
== -1)
9807 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9809 if (stub_entry
->h
== NULL
9810 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9812 Elf_Internal_Rela rela
;
9815 rela
.r_offset
= dest
;
9816 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9817 rela
.r_addend
= (stub_entry
->target_value
9818 + stub_entry
->target_section
->output_offset
9819 + stub_entry
->target_section
->output_section
->vma
);
9821 rl
= (htab
->reliplt
->contents
9822 + (htab
->reliplt
->reloc_count
++
9823 * sizeof (Elf64_External_Rela
)));
9824 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9825 stub_entry
->plt_ent
->plt
.offset
|= 1;
9829 - elf_gp (plt
->output_section
->owner
)
9830 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9832 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9834 (*_bfd_error_handler
)
9835 (_("linkage table error against `%s'"),
9836 stub_entry
->h
!= NULL
9837 ? stub_entry
->h
->elf
.root
.root
.string
9839 bfd_set_error (bfd_error_bad_value
);
9840 htab
->stub_error
= TRUE
;
9845 if (info
->emitrelocations
)
9847 r
= get_relocs (stub_entry
->stub_sec
,
9848 (2 + (PPC_HA (off
) != 0)
9849 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9852 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9853 if (bfd_big_endian (info
->output_bfd
))
9855 r
[0].r_addend
= dest
;
9857 if (stub_entry
->h
!= NULL
9858 && (stub_entry
->h
== htab
->tls_get_addr_fd
9859 || stub_entry
->h
== htab
->tls_get_addr
)
9860 && !htab
->no_tls_get_addr_opt
)
9861 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9863 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9872 stub_entry
->stub_sec
->size
+= size
;
9874 if (htab
->emit_stub_syms
)
9876 struct elf_link_hash_entry
*h
;
9879 const char *const stub_str
[] = { "long_branch",
9880 "long_branch_r2off",
9885 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9886 len2
= strlen (stub_entry
->root
.string
);
9887 name
= bfd_malloc (len1
+ len2
+ 2);
9890 memcpy (name
, stub_entry
->root
.string
, 9);
9891 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9892 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9893 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9896 if (h
->root
.type
== bfd_link_hash_new
)
9898 h
->root
.type
= bfd_link_hash_defined
;
9899 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9900 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9903 h
->ref_regular_nonweak
= 1;
9904 h
->forced_local
= 1;
9912 /* As above, but don't actually build the stub. Just bump offset so
9913 we know stub section sizes, and select plt_branch stubs where
9914 long_branch stubs won't do. */
9917 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9919 struct ppc_stub_hash_entry
*stub_entry
;
9920 struct bfd_link_info
*info
;
9921 struct ppc_link_hash_table
*htab
;
9925 /* Massage our args to the form they really have. */
9926 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9929 htab
= ppc_hash_table (info
);
9933 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9936 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9937 if (off
>= (bfd_vma
) -2)
9940 if (!htab
->elf
.dynamic_sections_created
9941 || stub_entry
->h
== NULL
9942 || stub_entry
->h
->elf
.dynindx
== -1)
9944 off
+= (plt
->output_offset
9945 + plt
->output_section
->vma
9946 - elf_gp (plt
->output_section
->owner
)
9947 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9949 size
= PLT_CALL_STUB_SIZE
;
9950 if (PPC_HA (off
) == 0)
9952 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9954 if (stub_entry
->h
!= NULL
9955 && (stub_entry
->h
== htab
->tls_get_addr_fd
9956 || stub_entry
->h
== htab
->tls_get_addr
)
9957 && !htab
->no_tls_get_addr_opt
)
9959 if (info
->emitrelocations
)
9961 stub_entry
->stub_sec
->reloc_count
9962 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9963 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9968 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9972 off
= (stub_entry
->target_value
9973 + stub_entry
->target_section
->output_offset
9974 + stub_entry
->target_section
->output_section
->vma
);
9975 off
-= (stub_entry
->stub_sec
->size
9976 + stub_entry
->stub_sec
->output_offset
9977 + stub_entry
->stub_sec
->output_section
->vma
);
9979 /* Reset the stub type from the plt variant in case we now
9980 can reach with a shorter stub. */
9981 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9982 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9985 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9987 r2off
= get_r2off (htab
, stub_entry
);
9990 htab
->stub_error
= TRUE
;
9994 if (PPC_HA (r2off
) != 0)
9999 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10000 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10002 struct ppc_branch_hash_entry
*br_entry
;
10004 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10005 stub_entry
->root
.string
+ 9,
10007 if (br_entry
== NULL
)
10009 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
10010 stub_entry
->root
.string
);
10011 htab
->stub_error
= TRUE
;
10015 if (br_entry
->iter
!= htab
->stub_iteration
)
10017 br_entry
->iter
= htab
->stub_iteration
;
10018 br_entry
->offset
= htab
->brlt
->size
;
10019 htab
->brlt
->size
+= 8;
10021 if (htab
->relbrlt
!= NULL
)
10022 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10023 else if (info
->emitrelocations
)
10025 htab
->brlt
->reloc_count
+= 1;
10026 htab
->brlt
->flags
|= SEC_RELOC
;
10030 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10031 off
= (br_entry
->offset
10032 + htab
->brlt
->output_offset
10033 + htab
->brlt
->output_section
->vma
10034 - elf_gp (htab
->brlt
->output_section
->owner
)
10035 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10037 if (info
->emitrelocations
)
10039 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10040 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10043 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10046 if (PPC_HA (off
) != 0)
10052 if (PPC_HA (off
) != 0)
10055 if (PPC_HA (r2off
) != 0)
10059 else if (info
->emitrelocations
)
10061 stub_entry
->stub_sec
->reloc_count
+= 1;
10062 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10066 stub_entry
->stub_sec
->size
+= size
;
10070 /* Set up various things so that we can make a list of input sections
10071 for each output section included in the link. Returns -1 on error,
10072 0 when no stubs will be needed, and 1 on success. */
10075 ppc64_elf_setup_section_lists
10076 (struct bfd_link_info
*info
,
10077 asection
*(*add_stub_section
) (const char *, asection
*),
10078 void (*layout_sections_again
) (void))
10081 int top_id
, top_index
, id
;
10083 asection
**input_list
;
10085 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10089 /* Stash our params away. */
10090 htab
->add_stub_section
= add_stub_section
;
10091 htab
->layout_sections_again
= layout_sections_again
;
10093 if (htab
->brlt
== NULL
)
10096 /* Find the top input section id. */
10097 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10099 input_bfd
= input_bfd
->link_next
)
10101 for (section
= input_bfd
->sections
;
10103 section
= section
->next
)
10105 if (top_id
< section
->id
)
10106 top_id
= section
->id
;
10110 htab
->top_id
= top_id
;
10111 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10112 htab
->stub_group
= bfd_zmalloc (amt
);
10113 if (htab
->stub_group
== NULL
)
10116 /* Set toc_off for com, und, abs and ind sections. */
10117 for (id
= 0; id
< 3; id
++)
10118 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10120 /* We can't use output_bfd->section_count here to find the top output
10121 section index as some sections may have been removed, and
10122 strip_excluded_output_sections doesn't renumber the indices. */
10123 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10125 section
= section
->next
)
10127 if (top_index
< section
->index
)
10128 top_index
= section
->index
;
10131 htab
->top_index
= top_index
;
10132 amt
= sizeof (asection
*) * (top_index
+ 1);
10133 input_list
= bfd_zmalloc (amt
);
10134 htab
->input_list
= input_list
;
10135 if (input_list
== NULL
)
10141 /* Set up for first pass at multitoc partitioning. */
10144 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10146 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10148 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10149 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10150 htab
->toc_bfd
= NULL
;
10151 htab
->toc_first_sec
= NULL
;
10154 /* The linker repeatedly calls this function for each TOC input section
10155 and linker generated GOT section. Group input bfds such that the toc
10156 within a group is less than 64k in size. */
10159 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10161 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10162 bfd_vma addr
, off
, limit
;
10167 if (!htab
->second_toc_pass
)
10169 /* Keep track of the first .toc or .got section for this input bfd. */
10170 if (htab
->toc_bfd
!= isec
->owner
)
10172 htab
->toc_bfd
= isec
->owner
;
10173 htab
->toc_first_sec
= isec
;
10176 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10177 off
= addr
- htab
->toc_curr
;
10178 limit
= 0x80008000;
10179 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10181 if (off
+ isec
->size
> limit
)
10183 addr
= (htab
->toc_first_sec
->output_offset
10184 + htab
->toc_first_sec
->output_section
->vma
);
10185 htab
->toc_curr
= addr
;
10188 /* toc_curr is the base address of this toc group. Set elf_gp
10189 for the input section to be the offset relative to the
10190 output toc base plus 0x8000. Making the input elf_gp an
10191 offset allows us to move the toc as a whole without
10192 recalculating input elf_gp. */
10193 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10194 off
+= TOC_BASE_OFF
;
10196 /* Die if someone uses a linker script that doesn't keep input
10197 file .toc and .got together. */
10198 if (elf_gp (isec
->owner
) != 0
10199 && elf_gp (isec
->owner
) != off
)
10202 elf_gp (isec
->owner
) = off
;
10206 /* During the second pass toc_first_sec points to the start of
10207 a toc group, and toc_curr is used to track the old elf_gp.
10208 We use toc_bfd to ensure we only look at each bfd once. */
10209 if (htab
->toc_bfd
== isec
->owner
)
10211 htab
->toc_bfd
= isec
->owner
;
10213 if (htab
->toc_first_sec
== NULL
10214 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10216 htab
->toc_curr
= elf_gp (isec
->owner
);
10217 htab
->toc_first_sec
= isec
;
10219 addr
= (htab
->toc_first_sec
->output_offset
10220 + htab
->toc_first_sec
->output_section
->vma
);
10221 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10222 elf_gp (isec
->owner
) = off
;
10227 /* Called via elf_link_hash_traverse to merge GOT entries for global
10231 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10233 if (h
->root
.type
== bfd_link_hash_indirect
)
10236 if (h
->root
.type
== bfd_link_hash_warning
)
10237 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10239 merge_got_entries (&h
->got
.glist
);
10244 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10248 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10250 struct got_entry
*gent
;
10252 if (h
->root
.type
== bfd_link_hash_indirect
)
10255 if (h
->root
.type
== bfd_link_hash_warning
)
10256 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10258 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10259 if (!gent
->is_indirect
)
10260 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10264 /* Called on the first multitoc pass after the last call to
10265 ppc64_elf_next_toc_section. This function removes duplicate GOT
10269 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10271 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10272 struct bfd
*ibfd
, *ibfd2
;
10273 bfd_boolean done_something
;
10275 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10277 if (!htab
->do_multi_toc
)
10280 /* Merge global sym got entries within a toc group. */
10281 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10283 /* And tlsld_got. */
10284 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10286 struct got_entry
*ent
, *ent2
;
10288 if (!is_ppc64_elf (ibfd
))
10291 ent
= ppc64_tlsld_got (ibfd
);
10292 if (!ent
->is_indirect
10293 && ent
->got
.offset
!= (bfd_vma
) -1)
10295 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10297 if (!is_ppc64_elf (ibfd2
))
10300 ent2
= ppc64_tlsld_got (ibfd2
);
10301 if (!ent2
->is_indirect
10302 && ent2
->got
.offset
!= (bfd_vma
) -1
10303 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10305 ent2
->is_indirect
= TRUE
;
10306 ent2
->got
.ent
= ent
;
10312 /* Zap sizes of got sections. */
10313 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10314 htab
->reliplt
->size
-= htab
->got_reli_size
;
10315 htab
->got_reli_size
= 0;
10317 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10319 asection
*got
, *relgot
;
10321 if (!is_ppc64_elf (ibfd
))
10324 got
= ppc64_elf_tdata (ibfd
)->got
;
10327 got
->rawsize
= got
->size
;
10329 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10330 relgot
->rawsize
= relgot
->size
;
10335 /* Now reallocate the got, local syms first. We don't need to
10336 allocate section contents again since we never increase size. */
10337 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10339 struct got_entry
**lgot_ents
;
10340 struct got_entry
**end_lgot_ents
;
10341 struct plt_entry
**local_plt
;
10342 struct plt_entry
**end_local_plt
;
10343 unsigned char *lgot_masks
;
10344 bfd_size_type locsymcount
;
10345 Elf_Internal_Shdr
*symtab_hdr
;
10346 asection
*s
, *srel
;
10348 if (!is_ppc64_elf (ibfd
))
10351 lgot_ents
= elf_local_got_ents (ibfd
);
10355 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10356 locsymcount
= symtab_hdr
->sh_info
;
10357 end_lgot_ents
= lgot_ents
+ locsymcount
;
10358 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10359 end_local_plt
= local_plt
+ locsymcount
;
10360 lgot_masks
= (unsigned char *) end_local_plt
;
10361 s
= ppc64_elf_tdata (ibfd
)->got
;
10362 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10363 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10365 struct got_entry
*ent
;
10367 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10369 unsigned int num
= 1;
10370 ent
->got
.offset
= s
->size
;
10371 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10373 s
->size
+= num
* 8;
10375 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10376 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10378 htab
->reliplt
->size
10379 += num
* sizeof (Elf64_External_Rela
);
10380 htab
->got_reli_size
10381 += num
* sizeof (Elf64_External_Rela
);
10387 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10389 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10391 struct got_entry
*ent
;
10393 if (!is_ppc64_elf (ibfd
))
10396 ent
= ppc64_tlsld_got (ibfd
);
10397 if (!ent
->is_indirect
10398 && ent
->got
.offset
!= (bfd_vma
) -1)
10400 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10401 ent
->got
.offset
= s
->size
;
10405 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10406 srel
->size
+= sizeof (Elf64_External_Rela
);
10411 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10412 if (!done_something
)
10413 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10417 if (!is_ppc64_elf (ibfd
))
10420 got
= ppc64_elf_tdata (ibfd
)->got
;
10423 done_something
= got
->rawsize
!= got
->size
;
10424 if (done_something
)
10429 if (done_something
)
10430 (*htab
->layout_sections_again
) ();
10432 /* Set up for second pass over toc sections to recalculate elf_gp
10433 on input sections. */
10434 htab
->toc_bfd
= NULL
;
10435 htab
->toc_first_sec
= NULL
;
10436 htab
->second_toc_pass
= TRUE
;
10437 return done_something
;
10440 /* Called after second pass of multitoc partitioning. */
10443 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10445 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10447 /* After the second pass, toc_curr tracks the TOC offset used
10448 for code sections below in ppc64_elf_next_input_section. */
10449 htab
->toc_curr
= TOC_BASE_OFF
;
10452 /* No toc references were found in ISEC. If the code in ISEC makes no
10453 calls, then there's no need to use toc adjusting stubs when branching
10454 into ISEC. Actually, indirect calls from ISEC are OK as they will
10455 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10456 needed, and 2 if a cyclical call-graph was found but no other reason
10457 for a stub was detected. If called from the top level, a return of
10458 2 means the same as a return of 0. */
10461 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10465 /* Mark this section as checked. */
10466 isec
->call_check_done
= 1;
10468 /* We know none of our code bearing sections will need toc stubs. */
10469 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10472 if (isec
->size
== 0)
10475 if (isec
->output_section
== NULL
)
10479 if (isec
->reloc_count
!= 0)
10481 Elf_Internal_Rela
*relstart
, *rel
;
10482 Elf_Internal_Sym
*local_syms
;
10483 struct ppc_link_hash_table
*htab
;
10485 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10486 info
->keep_memory
);
10487 if (relstart
== NULL
)
10490 /* Look for branches to outside of this section. */
10492 htab
= ppc_hash_table (info
);
10496 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10498 enum elf_ppc64_reloc_type r_type
;
10499 unsigned long r_symndx
;
10500 struct elf_link_hash_entry
*h
;
10501 struct ppc_link_hash_entry
*eh
;
10502 Elf_Internal_Sym
*sym
;
10504 struct _opd_sec_data
*opd
;
10508 r_type
= ELF64_R_TYPE (rel
->r_info
);
10509 if (r_type
!= R_PPC64_REL24
10510 && r_type
!= R_PPC64_REL14
10511 && r_type
!= R_PPC64_REL14_BRTAKEN
10512 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10515 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10516 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10523 /* Calls to dynamic lib functions go through a plt call stub
10525 eh
= (struct ppc_link_hash_entry
*) h
;
10527 && (eh
->elf
.plt
.plist
!= NULL
10529 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10535 if (sym_sec
== NULL
)
10536 /* Ignore other undefined symbols. */
10539 /* Assume branches to other sections not included in the
10540 link need stubs too, to cover -R and absolute syms. */
10541 if (sym_sec
->output_section
== NULL
)
10548 sym_value
= sym
->st_value
;
10551 if (h
->root
.type
!= bfd_link_hash_defined
10552 && h
->root
.type
!= bfd_link_hash_defweak
)
10554 sym_value
= h
->root
.u
.def
.value
;
10556 sym_value
+= rel
->r_addend
;
10558 /* If this branch reloc uses an opd sym, find the code section. */
10559 opd
= get_opd_info (sym_sec
);
10562 if (h
== NULL
&& opd
->adjust
!= NULL
)
10566 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10568 /* Assume deleted functions won't ever be called. */
10570 sym_value
+= adjust
;
10573 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10574 if (dest
== (bfd_vma
) -1)
10579 + sym_sec
->output_offset
10580 + sym_sec
->output_section
->vma
);
10582 /* Ignore branch to self. */
10583 if (sym_sec
== isec
)
10586 /* If the called function uses the toc, we need a stub. */
10587 if (sym_sec
->has_toc_reloc
10588 || sym_sec
->makes_toc_func_call
)
10594 /* Assume any branch that needs a long branch stub might in fact
10595 need a plt_branch stub. A plt_branch stub uses r2. */
10596 else if (dest
- (isec
->output_offset
10597 + isec
->output_section
->vma
10598 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10604 /* If calling back to a section in the process of being
10605 tested, we can't say for sure that no toc adjusting stubs
10606 are needed, so don't return zero. */
10607 else if (sym_sec
->call_check_in_progress
)
10610 /* Branches to another section that itself doesn't have any TOC
10611 references are OK. Recursively call ourselves to check. */
10612 else if (!sym_sec
->call_check_done
)
10616 /* Mark current section as indeterminate, so that other
10617 sections that call back to current won't be marked as
10619 isec
->call_check_in_progress
= 1;
10620 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10621 isec
->call_check_in_progress
= 0;
10632 if (local_syms
!= NULL
10633 && (elf_symtab_hdr (isec
->owner
).contents
10634 != (unsigned char *) local_syms
))
10636 if (elf_section_data (isec
)->relocs
!= relstart
)
10641 && isec
->map_head
.s
!= NULL
10642 && (strcmp (isec
->output_section
->name
, ".init") == 0
10643 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10645 if (isec
->map_head
.s
->has_toc_reloc
10646 || isec
->map_head
.s
->makes_toc_func_call
)
10648 else if (!isec
->map_head
.s
->call_check_done
)
10651 isec
->call_check_in_progress
= 1;
10652 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10653 isec
->call_check_in_progress
= 0;
10660 isec
->makes_toc_func_call
= 1;
10665 /* The linker repeatedly calls this function for each input section,
10666 in the order that input sections are linked into output sections.
10667 Build lists of input sections to determine groupings between which
10668 we may insert linker stubs. */
10671 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10673 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10678 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10679 && isec
->output_section
->index
<= htab
->top_index
)
10681 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10682 /* Steal the link_sec pointer for our list. */
10683 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10684 /* This happens to make the list in reverse order,
10685 which is what we want. */
10686 PREV_SEC (isec
) = *list
;
10690 if (htab
->multi_toc_needed
)
10692 /* If a code section has a function that uses the TOC then we need
10693 to use the right TOC (obviously). Also, make sure that .opd gets
10694 the correct TOC value for R_PPC64_TOC relocs that don't have or
10695 can't find their function symbol (shouldn't ever happen now).
10696 Also specially treat .fixup for the linux kernel. .fixup
10697 contains branches, but only back to the function that hit an
10699 if (isec
->has_toc_reloc
10700 || (isec
->flags
& SEC_CODE
) == 0
10701 || strcmp (isec
->name
, ".fixup") == 0)
10703 if (elf_gp (isec
->owner
) != 0)
10704 htab
->toc_curr
= elf_gp (isec
->owner
);
10708 if (!isec
->call_check_done
10709 && toc_adjusting_stub_needed (info
, isec
) < 0)
10711 /* If we make a local call from this section, ie. a branch
10712 without a following nop, then we have no place to put a
10713 toc restoring insn. We must use the same toc group as
10715 Testing makes_toc_func_call actually tests for *any*
10716 calls to functions that need a good toc pointer. A more
10717 precise test would be better, as this one will set
10718 incorrect values for pasted .init/.fini fragments.
10719 (Fixed later in check_pasted_section.) */
10720 if (isec
->makes_toc_func_call
10721 && elf_gp (isec
->owner
) != 0)
10722 htab
->toc_curr
= elf_gp (isec
->owner
);
10726 /* Functions that don't use the TOC can belong in any TOC group.
10727 Use the last TOC base. */
10728 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10732 /* Check that all .init and .fini sections use the same toc, if they
10733 have toc relocs. */
10736 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10738 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10742 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10743 bfd_vma toc_off
= 0;
10746 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10747 if (i
->has_toc_reloc
)
10750 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10751 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10756 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10757 if (i
->makes_toc_func_call
)
10759 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10763 /* Make sure the whole pasted function uses the same toc offset. */
10765 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10766 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10772 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10774 return (check_pasted_section (info
, ".init")
10775 & check_pasted_section (info
, ".fini"));
10778 /* See whether we can group stub sections together. Grouping stub
10779 sections may result in fewer stubs. More importantly, we need to
10780 put all .init* and .fini* stubs at the beginning of the .init or
10781 .fini output sections respectively, because glibc splits the
10782 _init and _fini functions into multiple parts. Putting a stub in
10783 the middle of a function is not a good idea. */
10786 group_sections (struct ppc_link_hash_table
*htab
,
10787 bfd_size_type stub_group_size
,
10788 bfd_boolean stubs_always_before_branch
)
10791 bfd_size_type stub14_group_size
;
10792 bfd_boolean suppress_size_errors
;
10794 suppress_size_errors
= FALSE
;
10795 stub14_group_size
= stub_group_size
;
10796 if (stub_group_size
== 1)
10798 /* Default values. */
10799 if (stubs_always_before_branch
)
10801 stub_group_size
= 0x1e00000;
10802 stub14_group_size
= 0x7800;
10806 stub_group_size
= 0x1c00000;
10807 stub14_group_size
= 0x7000;
10809 suppress_size_errors
= TRUE
;
10812 list
= htab
->input_list
+ htab
->top_index
;
10815 asection
*tail
= *list
;
10816 while (tail
!= NULL
)
10820 bfd_size_type total
;
10821 bfd_boolean big_sec
;
10825 total
= tail
->size
;
10826 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10827 && ppc64_elf_section_data (tail
)->has_14bit_branch
10828 ? stub14_group_size
: stub_group_size
);
10829 if (big_sec
&& !suppress_size_errors
)
10830 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10831 tail
->owner
, tail
);
10832 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10834 while ((prev
= PREV_SEC (curr
)) != NULL
10835 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10836 < (ppc64_elf_section_data (prev
) != NULL
10837 && ppc64_elf_section_data (prev
)->has_14bit_branch
10838 ? stub14_group_size
: stub_group_size
))
10839 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10842 /* OK, the size from the start of CURR to the end is less
10843 than stub_group_size and thus can be handled by one stub
10844 section. (or the tail section is itself larger than
10845 stub_group_size, in which case we may be toast.) We
10846 should really be keeping track of the total size of stubs
10847 added here, as stubs contribute to the final output
10848 section size. That's a little tricky, and this way will
10849 only break if stubs added make the total size more than
10850 2^25, ie. for the default stub_group_size, if stubs total
10851 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10854 prev
= PREV_SEC (tail
);
10855 /* Set up this stub group. */
10856 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10858 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10860 /* But wait, there's more! Input sections up to stub_group_size
10861 bytes before the stub section can be handled by it too.
10862 Don't do this if we have a really large section after the
10863 stubs, as adding more stubs increases the chance that
10864 branches may not reach into the stub section. */
10865 if (!stubs_always_before_branch
&& !big_sec
)
10868 while (prev
!= NULL
10869 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10870 < (ppc64_elf_section_data (prev
) != NULL
10871 && ppc64_elf_section_data (prev
)->has_14bit_branch
10872 ? stub14_group_size
: stub_group_size
))
10873 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10876 prev
= PREV_SEC (tail
);
10877 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10883 while (list
-- != htab
->input_list
);
10884 free (htab
->input_list
);
10888 /* Determine and set the size of the stub section for a final link.
10890 The basic idea here is to examine all the relocations looking for
10891 PC-relative calls to a target that is unreachable with a "bl"
10895 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10897 bfd_size_type stub_group_size
;
10898 bfd_boolean stubs_always_before_branch
;
10899 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10904 stubs_always_before_branch
= group_size
< 0;
10905 if (group_size
< 0)
10906 stub_group_size
= -group_size
;
10908 stub_group_size
= group_size
;
10910 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10915 unsigned int bfd_indx
;
10916 asection
*stub_sec
;
10918 htab
->stub_iteration
+= 1;
10920 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10922 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10924 Elf_Internal_Shdr
*symtab_hdr
;
10926 Elf_Internal_Sym
*local_syms
= NULL
;
10928 if (!is_ppc64_elf (input_bfd
))
10931 /* We'll need the symbol table in a second. */
10932 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10933 if (symtab_hdr
->sh_info
== 0)
10936 /* Walk over each section attached to the input bfd. */
10937 for (section
= input_bfd
->sections
;
10939 section
= section
->next
)
10941 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10943 /* If there aren't any relocs, then there's nothing more
10945 if ((section
->flags
& SEC_RELOC
) == 0
10946 || (section
->flags
& SEC_ALLOC
) == 0
10947 || (section
->flags
& SEC_LOAD
) == 0
10948 || (section
->flags
& SEC_CODE
) == 0
10949 || section
->reloc_count
== 0)
10952 /* If this section is a link-once section that will be
10953 discarded, then don't create any stubs. */
10954 if (section
->output_section
== NULL
10955 || section
->output_section
->owner
!= info
->output_bfd
)
10958 /* Get the relocs. */
10960 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10961 info
->keep_memory
);
10962 if (internal_relocs
== NULL
)
10963 goto error_ret_free_local
;
10965 /* Now examine each relocation. */
10966 irela
= internal_relocs
;
10967 irelaend
= irela
+ section
->reloc_count
;
10968 for (; irela
< irelaend
; irela
++)
10970 enum elf_ppc64_reloc_type r_type
;
10971 unsigned int r_indx
;
10972 enum ppc_stub_type stub_type
;
10973 struct ppc_stub_hash_entry
*stub_entry
;
10974 asection
*sym_sec
, *code_sec
;
10975 bfd_vma sym_value
, code_value
;
10976 bfd_vma destination
;
10977 bfd_boolean ok_dest
;
10978 struct ppc_link_hash_entry
*hash
;
10979 struct ppc_link_hash_entry
*fdh
;
10980 struct elf_link_hash_entry
*h
;
10981 Elf_Internal_Sym
*sym
;
10983 const asection
*id_sec
;
10984 struct _opd_sec_data
*opd
;
10985 struct plt_entry
*plt_ent
;
10987 r_type
= ELF64_R_TYPE (irela
->r_info
);
10988 r_indx
= ELF64_R_SYM (irela
->r_info
);
10990 if (r_type
>= R_PPC64_max
)
10992 bfd_set_error (bfd_error_bad_value
);
10993 goto error_ret_free_internal
;
10996 /* Only look for stubs on branch instructions. */
10997 if (r_type
!= R_PPC64_REL24
10998 && r_type
!= R_PPC64_REL14
10999 && r_type
!= R_PPC64_REL14_BRTAKEN
11000 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11003 /* Now determine the call target, its name, value,
11005 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
11006 r_indx
, input_bfd
))
11007 goto error_ret_free_internal
;
11008 hash
= (struct ppc_link_hash_entry
*) h
;
11015 sym_value
= sym
->st_value
;
11018 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
11019 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
11021 sym_value
= hash
->elf
.root
.u
.def
.value
;
11022 if (sym_sec
->output_section
!= NULL
)
11025 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
11026 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
11028 /* Recognise an old ABI func code entry sym, and
11029 use the func descriptor sym instead if it is
11031 if (hash
->elf
.root
.root
.string
[0] == '.'
11032 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
11034 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
11035 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
11037 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
11038 sym_value
= fdh
->elf
.root
.u
.def
.value
;
11039 if (sym_sec
->output_section
!= NULL
)
11048 bfd_set_error (bfd_error_bad_value
);
11049 goto error_ret_free_internal
;
11055 sym_value
+= irela
->r_addend
;
11056 destination
= (sym_value
11057 + sym_sec
->output_offset
11058 + sym_sec
->output_section
->vma
);
11061 code_sec
= sym_sec
;
11062 code_value
= sym_value
;
11063 opd
= get_opd_info (sym_sec
);
11068 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11070 long adjust
= opd
->adjust
[sym_value
/ 8];
11073 code_value
+= adjust
;
11074 sym_value
+= adjust
;
11076 dest
= opd_entry_value (sym_sec
, sym_value
,
11077 &code_sec
, &code_value
);
11078 if (dest
!= (bfd_vma
) -1)
11080 destination
= dest
;
11083 /* Fixup old ABI sym to point at code
11085 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11086 hash
->elf
.root
.u
.def
.section
= code_sec
;
11087 hash
->elf
.root
.u
.def
.value
= code_value
;
11092 /* Determine what (if any) linker stub is needed. */
11094 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11095 &plt_ent
, destination
);
11097 if (stub_type
!= ppc_stub_plt_call
)
11099 /* Check whether we need a TOC adjusting stub.
11100 Since the linker pastes together pieces from
11101 different object files when creating the
11102 _init and _fini functions, it may be that a
11103 call to what looks like a local sym is in
11104 fact a call needing a TOC adjustment. */
11105 if (code_sec
!= NULL
11106 && code_sec
->output_section
!= NULL
11107 && (htab
->stub_group
[code_sec
->id
].toc_off
11108 != htab
->stub_group
[section
->id
].toc_off
)
11109 && (code_sec
->has_toc_reloc
11110 || code_sec
->makes_toc_func_call
))
11111 stub_type
= ppc_stub_long_branch_r2off
;
11114 if (stub_type
== ppc_stub_none
)
11117 /* __tls_get_addr calls might be eliminated. */
11118 if (stub_type
!= ppc_stub_plt_call
11120 && (hash
== htab
->tls_get_addr
11121 || hash
== htab
->tls_get_addr_fd
)
11122 && section
->has_tls_reloc
11123 && irela
!= internal_relocs
)
11125 /* Get tls info. */
11126 unsigned char *tls_mask
;
11128 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11129 irela
- 1, input_bfd
))
11130 goto error_ret_free_internal
;
11131 if (*tls_mask
!= 0)
11135 /* Support for grouping stub sections. */
11136 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11138 /* Get the name of this stub. */
11139 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11141 goto error_ret_free_internal
;
11143 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11144 stub_name
, FALSE
, FALSE
);
11145 if (stub_entry
!= NULL
)
11147 /* The proper stub has already been created. */
11152 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
11153 if (stub_entry
== NULL
)
11156 error_ret_free_internal
:
11157 if (elf_section_data (section
)->relocs
== NULL
)
11158 free (internal_relocs
);
11159 error_ret_free_local
:
11160 if (local_syms
!= NULL
11161 && (symtab_hdr
->contents
11162 != (unsigned char *) local_syms
))
11167 stub_entry
->stub_type
= stub_type
;
11168 if (stub_type
!= ppc_stub_plt_call
)
11170 stub_entry
->target_value
= code_value
;
11171 stub_entry
->target_section
= code_sec
;
11175 stub_entry
->target_value
= sym_value
;
11176 stub_entry
->target_section
= sym_sec
;
11178 stub_entry
->h
= hash
;
11179 stub_entry
->plt_ent
= plt_ent
;
11180 stub_entry
->addend
= irela
->r_addend
;
11182 if (stub_entry
->h
!= NULL
)
11183 htab
->stub_globals
+= 1;
11186 /* We're done with the internal relocs, free them. */
11187 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11188 free (internal_relocs
);
11191 if (local_syms
!= NULL
11192 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11194 if (!info
->keep_memory
)
11197 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11201 /* We may have added some stubs. Find out the new size of the
11203 for (stub_sec
= htab
->stub_bfd
->sections
;
11205 stub_sec
= stub_sec
->next
)
11206 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11208 stub_sec
->rawsize
= stub_sec
->size
;
11209 stub_sec
->size
= 0;
11210 stub_sec
->reloc_count
= 0;
11211 stub_sec
->flags
&= ~SEC_RELOC
;
11214 htab
->brlt
->size
= 0;
11215 htab
->brlt
->reloc_count
= 0;
11216 htab
->brlt
->flags
&= ~SEC_RELOC
;
11217 if (htab
->relbrlt
!= NULL
)
11218 htab
->relbrlt
->size
= 0;
11220 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11222 if (info
->emitrelocations
11223 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11225 htab
->glink
->reloc_count
= 1;
11226 htab
->glink
->flags
|= SEC_RELOC
;
11229 for (stub_sec
= htab
->stub_bfd
->sections
;
11231 stub_sec
= stub_sec
->next
)
11232 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11233 && stub_sec
->rawsize
!= stub_sec
->size
)
11236 /* Exit from this loop when no stubs have been added, and no stubs
11237 have changed size. */
11238 if (stub_sec
== NULL
)
11241 /* Ask the linker to do its stuff. */
11242 (*htab
->layout_sections_again
) ();
11245 /* It would be nice to strip htab->brlt from the output if the
11246 section is empty, but it's too late. If we strip sections here,
11247 the dynamic symbol table is corrupted since the section symbol
11248 for the stripped section isn't written. */
11253 /* Called after we have determined section placement. If sections
11254 move, we'll be called again. Provide a value for TOCstart. */
11257 ppc64_elf_toc (bfd
*obfd
)
11262 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11263 order. The TOC starts where the first of these sections starts. */
11264 s
= bfd_get_section_by_name (obfd
, ".got");
11265 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11266 s
= bfd_get_section_by_name (obfd
, ".toc");
11267 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11268 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11269 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11270 s
= bfd_get_section_by_name (obfd
, ".plt");
11271 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11273 /* This may happen for
11274 o references to TOC base (SYM@toc / TOC[tc0]) without a
11276 o bad linker script
11277 o --gc-sections and empty TOC sections
11279 FIXME: Warn user? */
11281 /* Look for a likely section. We probably won't even be
11283 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11284 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11286 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11289 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11290 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11291 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11294 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11295 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11299 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11300 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11306 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11311 /* Build all the stubs associated with the current output file.
11312 The stubs are kept in a hash table attached to the main linker
11313 hash table. This function is called via gldelf64ppc_finish. */
11316 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11317 struct bfd_link_info
*info
,
11320 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11321 asection
*stub_sec
;
11323 int stub_sec_count
= 0;
11328 htab
->emit_stub_syms
= emit_stub_syms
;
11330 /* Allocate memory to hold the linker stubs. */
11331 for (stub_sec
= htab
->stub_bfd
->sections
;
11333 stub_sec
= stub_sec
->next
)
11334 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11335 && stub_sec
->size
!= 0)
11337 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11338 if (stub_sec
->contents
== NULL
)
11340 /* We want to check that built size is the same as calculated
11341 size. rawsize is a convenient location to use. */
11342 stub_sec
->rawsize
= stub_sec
->size
;
11343 stub_sec
->size
= 0;
11346 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11351 /* Build the .glink plt call stub. */
11352 if (htab
->emit_stub_syms
)
11354 struct elf_link_hash_entry
*h
;
11355 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11356 TRUE
, FALSE
, FALSE
);
11359 if (h
->root
.type
== bfd_link_hash_new
)
11361 h
->root
.type
= bfd_link_hash_defined
;
11362 h
->root
.u
.def
.section
= htab
->glink
;
11363 h
->root
.u
.def
.value
= 8;
11364 h
->ref_regular
= 1;
11365 h
->def_regular
= 1;
11366 h
->ref_regular_nonweak
= 1;
11367 h
->forced_local
= 1;
11371 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11372 if (info
->emitrelocations
)
11374 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11377 r
->r_offset
= (htab
->glink
->output_offset
11378 + htab
->glink
->output_section
->vma
);
11379 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11380 r
->r_addend
= plt0
;
11382 p
= htab
->glink
->contents
;
11383 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11384 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11386 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11388 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11390 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11392 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11394 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11396 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11398 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11400 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11402 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11404 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11406 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11408 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11410 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11414 /* Build the .glink lazy link call stubs. */
11416 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11420 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11425 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11427 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11430 bfd_put_32 (htab
->glink
->owner
,
11431 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11435 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11438 if (htab
->brlt
->size
!= 0)
11440 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11442 if (htab
->brlt
->contents
== NULL
)
11445 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11447 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11448 htab
->relbrlt
->size
);
11449 if (htab
->relbrlt
->contents
== NULL
)
11453 /* Build the stubs as directed by the stub hash table. */
11454 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11456 if (htab
->relbrlt
!= NULL
)
11457 htab
->relbrlt
->reloc_count
= 0;
11459 for (stub_sec
= htab
->stub_bfd
->sections
;
11461 stub_sec
= stub_sec
->next
)
11462 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11464 stub_sec_count
+= 1;
11465 if (stub_sec
->rawsize
!= stub_sec
->size
)
11469 if (stub_sec
!= NULL
11470 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11472 htab
->stub_error
= TRUE
;
11473 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11476 if (htab
->stub_error
)
11481 *stats
= bfd_malloc (500);
11482 if (*stats
== NULL
)
11485 sprintf (*stats
, _("linker stubs in %u group%s\n"
11487 " toc adjust %lu\n"
11488 " long branch %lu\n"
11489 " long toc adj %lu\n"
11492 stub_sec_count
== 1 ? "" : "s",
11493 htab
->stub_count
[ppc_stub_long_branch
- 1],
11494 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11495 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11496 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11497 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11502 /* This function undoes the changes made by add_symbol_adjust. */
11505 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11507 struct ppc_link_hash_entry
*eh
;
11509 if (h
->root
.type
== bfd_link_hash_indirect
)
11512 if (h
->root
.type
== bfd_link_hash_warning
)
11513 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11515 eh
= (struct ppc_link_hash_entry
*) h
;
11516 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11519 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11524 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11526 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11529 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11532 /* What to do when ld finds relocations against symbols defined in
11533 discarded sections. */
11535 static unsigned int
11536 ppc64_elf_action_discarded (asection
*sec
)
11538 if (strcmp (".opd", sec
->name
) == 0)
11541 if (strcmp (".toc", sec
->name
) == 0)
11544 if (strcmp (".toc1", sec
->name
) == 0)
11547 return _bfd_elf_default_action_discarded (sec
);
11550 /* REL points to a low-part reloc on a largetoc instruction sequence.
11551 Find the matching high-part reloc instruction and verify that it
11552 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11553 the high-part reloc. */
11555 static const Elf_Internal_Rela
*
11556 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11557 const Elf_Internal_Rela
*rel
,
11559 bfd_boolean match_addend
,
11560 const bfd
*input_bfd
,
11561 const bfd_byte
*contents
)
11563 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11564 bfd_vma r_info_ha
, r_addend
;
11566 r_type
= ELF64_R_TYPE (rel
->r_info
);
11569 case R_PPC64_GOT_TLSLD16_LO
:
11570 case R_PPC64_GOT_TLSGD16_LO
:
11571 case R_PPC64_GOT_TPREL16_LO_DS
:
11572 case R_PPC64_GOT_DTPREL16_LO_DS
:
11573 case R_PPC64_GOT16_LO
:
11574 case R_PPC64_TOC16_LO
:
11575 r_type_ha
= r_type
+ 2;
11577 case R_PPC64_GOT16_LO_DS
:
11578 r_type_ha
= R_PPC64_GOT16_HA
;
11580 case R_PPC64_TOC16_LO_DS
:
11581 r_type_ha
= R_PPC64_TOC16_HA
;
11586 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11587 r_addend
= rel
->r_addend
;
11589 while (--rel
>= relocs
)
11590 if (rel
->r_info
== r_info_ha
11592 || rel
->r_addend
== r_addend
))
11594 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11595 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11596 if ((insn
& (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11597 && (insn
& (0x1f << 21)) == (*reg
<< 21))
11599 *reg
= (insn
>> 16) & 0x1f;
11607 /* The RELOCATE_SECTION function is called by the ELF backend linker
11608 to handle the relocations for a section.
11610 The relocs are always passed as Rela structures; if the section
11611 actually uses Rel structures, the r_addend field will always be
11614 This function is responsible for adjust the section contents as
11615 necessary, and (if using Rela relocs and generating a
11616 relocatable output file) adjusting the reloc addend as
11619 This function does not have to worry about setting the reloc
11620 address or the reloc symbol index.
11622 LOCAL_SYMS is a pointer to the swapped in local symbols.
11624 LOCAL_SECTIONS is an array giving the section in the input file
11625 corresponding to the st_shndx field of each local symbol.
11627 The global hash table entry for the global symbols can be found
11628 via elf_sym_hashes (input_bfd).
11630 When generating relocatable output, this function must handle
11631 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11632 going to be the section symbol corresponding to the output
11633 section, which means that the addend must be adjusted
11637 ppc64_elf_relocate_section (bfd
*output_bfd
,
11638 struct bfd_link_info
*info
,
11640 asection
*input_section
,
11641 bfd_byte
*contents
,
11642 Elf_Internal_Rela
*relocs
,
11643 Elf_Internal_Sym
*local_syms
,
11644 asection
**local_sections
)
11646 struct ppc_link_hash_table
*htab
;
11647 Elf_Internal_Shdr
*symtab_hdr
;
11648 struct elf_link_hash_entry
**sym_hashes
;
11649 Elf_Internal_Rela
*rel
;
11650 Elf_Internal_Rela
*relend
;
11651 Elf_Internal_Rela outrel
;
11653 struct got_entry
**local_got_ents
;
11654 unsigned char *ha_opt
;
11656 bfd_boolean no_ha_opt
;
11657 bfd_boolean ret
= TRUE
;
11658 bfd_boolean is_opd
;
11659 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11660 bfd_boolean is_power4
= FALSE
;
11661 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11663 /* Initialize howto table if needed. */
11664 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11667 htab
= ppc_hash_table (info
);
11671 /* Don't relocate stub sections. */
11672 if (input_section
->owner
== htab
->stub_bfd
)
11675 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11677 local_got_ents
= elf_local_got_ents (input_bfd
);
11678 TOCstart
= elf_gp (output_bfd
);
11679 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11680 sym_hashes
= elf_sym_hashes (input_bfd
);
11681 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11686 relend
= relocs
+ input_section
->reloc_count
;
11687 for (; rel
< relend
; rel
++)
11689 enum elf_ppc64_reloc_type r_type
;
11690 bfd_vma addend
, orig_addend
;
11691 bfd_reloc_status_type r
;
11692 Elf_Internal_Sym
*sym
;
11694 struct elf_link_hash_entry
*h_elf
;
11695 struct ppc_link_hash_entry
*h
;
11696 struct ppc_link_hash_entry
*fdh
;
11697 const char *sym_name
;
11698 unsigned long r_symndx
, toc_symndx
;
11699 bfd_vma toc_addend
;
11700 unsigned char tls_mask
, tls_gd
, tls_type
;
11701 unsigned char sym_type
;
11702 bfd_vma relocation
;
11703 bfd_boolean unresolved_reloc
;
11704 bfd_boolean warned
;
11707 struct ppc_stub_hash_entry
*stub_entry
;
11708 bfd_vma max_br_offset
;
11711 r_type
= ELF64_R_TYPE (rel
->r_info
);
11712 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11714 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11715 symbol of the previous ADDR64 reloc. The symbol gives us the
11716 proper TOC base to use. */
11717 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11719 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11721 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11727 unresolved_reloc
= FALSE
;
11729 orig_addend
= rel
->r_addend
;
11731 if (r_symndx
< symtab_hdr
->sh_info
)
11733 /* It's a local symbol. */
11734 struct _opd_sec_data
*opd
;
11736 sym
= local_syms
+ r_symndx
;
11737 sec
= local_sections
[r_symndx
];
11738 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11739 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11740 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11741 opd
= get_opd_info (sec
);
11742 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11744 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11749 /* If this is a relocation against the opd section sym
11750 and we have edited .opd, adjust the reloc addend so
11751 that ld -r and ld --emit-relocs output is correct.
11752 If it is a reloc against some other .opd symbol,
11753 then the symbol value will be adjusted later. */
11754 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11755 rel
->r_addend
+= adjust
;
11757 relocation
+= adjust
;
11763 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11764 r_symndx
, symtab_hdr
, sym_hashes
,
11765 h_elf
, sec
, relocation
,
11766 unresolved_reloc
, warned
);
11767 sym_name
= h_elf
->root
.root
.string
;
11768 sym_type
= h_elf
->type
;
11770 h
= (struct ppc_link_hash_entry
*) h_elf
;
11772 if (sec
!= NULL
&& elf_discarded_section (sec
))
11773 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
11775 ppc64_elf_howto_table
[r_type
],
11778 if (info
->relocatable
)
11781 /* TLS optimizations. Replace instruction sequences and relocs
11782 based on information we collected in tls_optimize. We edit
11783 RELOCS so that --emit-relocs will output something sensible
11784 for the final instruction stream. */
11789 tls_mask
= h
->tls_mask
;
11790 else if (local_got_ents
!= NULL
)
11792 struct plt_entry
**local_plt
= (struct plt_entry
**)
11793 (local_got_ents
+ symtab_hdr
->sh_info
);
11794 unsigned char *lgot_masks
= (unsigned char *)
11795 (local_plt
+ symtab_hdr
->sh_info
);
11796 tls_mask
= lgot_masks
[r_symndx
];
11799 && (r_type
== R_PPC64_TLS
11800 || r_type
== R_PPC64_TLSGD
11801 || r_type
== R_PPC64_TLSLD
))
11803 /* Check for toc tls entries. */
11804 unsigned char *toc_tls
;
11806 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11807 &local_syms
, rel
, input_bfd
))
11811 tls_mask
= *toc_tls
;
11814 /* Check that tls relocs are used with tls syms, and non-tls
11815 relocs are used with non-tls syms. */
11816 if (r_symndx
!= STN_UNDEF
11817 && r_type
!= R_PPC64_NONE
11819 || h
->elf
.root
.type
== bfd_link_hash_defined
11820 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11821 && (IS_PPC64_TLS_RELOC (r_type
)
11822 != (sym_type
== STT_TLS
11823 || (sym_type
== STT_SECTION
11824 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11827 && (r_type
== R_PPC64_TLS
11828 || r_type
== R_PPC64_TLSGD
11829 || r_type
== R_PPC64_TLSLD
))
11830 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11833 (*_bfd_error_handler
)
11834 (!IS_PPC64_TLS_RELOC (r_type
)
11835 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11836 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11839 (long) rel
->r_offset
,
11840 ppc64_elf_howto_table
[r_type
]->name
,
11844 /* Ensure reloc mapping code below stays sane. */
11845 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11846 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11847 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11848 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11849 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11850 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11851 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11852 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11853 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11854 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11862 case R_PPC64_LO_DS_OPT
:
11863 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11864 if ((insn
& (0x3f << 26)) != 58u << 26)
11866 insn
+= (14u << 26) - (58u << 26);
11867 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11868 r_type
= R_PPC64_TOC16_LO
;
11869 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11872 case R_PPC64_TOC16
:
11873 case R_PPC64_TOC16_LO
:
11874 case R_PPC64_TOC16_DS
:
11875 case R_PPC64_TOC16_LO_DS
:
11877 /* Check for toc tls entries. */
11878 unsigned char *toc_tls
;
11881 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11882 &local_syms
, rel
, input_bfd
);
11888 tls_mask
= *toc_tls
;
11889 if (r_type
== R_PPC64_TOC16_DS
11890 || r_type
== R_PPC64_TOC16_LO_DS
)
11893 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11898 /* If we found a GD reloc pair, then we might be
11899 doing a GD->IE transition. */
11902 tls_gd
= TLS_TPRELGD
;
11903 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11906 else if (retval
== 3)
11908 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11916 case R_PPC64_GOT_TPREL16_HI
:
11917 case R_PPC64_GOT_TPREL16_HA
:
11919 && (tls_mask
& TLS_TPREL
) == 0)
11921 rel
->r_offset
-= d_offset
;
11922 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11923 r_type
= R_PPC64_NONE
;
11924 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11928 case R_PPC64_GOT_TPREL16_DS
:
11929 case R_PPC64_GOT_TPREL16_LO_DS
:
11931 && (tls_mask
& TLS_TPREL
) == 0)
11934 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11936 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11937 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11938 r_type
= R_PPC64_TPREL16_HA
;
11939 if (toc_symndx
!= 0)
11941 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11942 rel
->r_addend
= toc_addend
;
11943 /* We changed the symbol. Start over in order to
11944 get h, sym, sec etc. right. */
11949 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11955 && (tls_mask
& TLS_TPREL
) == 0)
11957 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11958 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11961 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11962 /* Was PPC64_TLS which sits on insn boundary, now
11963 PPC64_TPREL16_LO which is at low-order half-word. */
11964 rel
->r_offset
+= d_offset
;
11965 r_type
= R_PPC64_TPREL16_LO
;
11966 if (toc_symndx
!= 0)
11968 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11969 rel
->r_addend
= toc_addend
;
11970 /* We changed the symbol. Start over in order to
11971 get h, sym, sec etc. right. */
11976 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11980 case R_PPC64_GOT_TLSGD16_HI
:
11981 case R_PPC64_GOT_TLSGD16_HA
:
11982 tls_gd
= TLS_TPRELGD
;
11983 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11987 case R_PPC64_GOT_TLSLD16_HI
:
11988 case R_PPC64_GOT_TLSLD16_HA
:
11989 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11992 if ((tls_mask
& tls_gd
) != 0)
11993 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11994 + R_PPC64_GOT_TPREL16_DS
);
11997 rel
->r_offset
-= d_offset
;
11998 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11999 r_type
= R_PPC64_NONE
;
12001 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12005 case R_PPC64_GOT_TLSGD16
:
12006 case R_PPC64_GOT_TLSGD16_LO
:
12007 tls_gd
= TLS_TPRELGD
;
12008 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12012 case R_PPC64_GOT_TLSLD16
:
12013 case R_PPC64_GOT_TLSLD16_LO
:
12014 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12016 unsigned int insn1
, insn2
, insn3
;
12020 offset
= (bfd_vma
) -1;
12021 /* If not using the newer R_PPC64_TLSGD/LD to mark
12022 __tls_get_addr calls, we must trust that the call
12023 stays with its arg setup insns, ie. that the next
12024 reloc is the __tls_get_addr call associated with
12025 the current reloc. Edit both insns. */
12026 if (input_section
->has_tls_get_addr_call
12027 && rel
+ 1 < relend
12028 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
12029 htab
->tls_get_addr
,
12030 htab
->tls_get_addr_fd
))
12031 offset
= rel
[1].r_offset
;
12032 if ((tls_mask
& tls_gd
) != 0)
12035 insn1
= bfd_get_32 (output_bfd
,
12036 contents
+ rel
->r_offset
- d_offset
);
12037 insn1
&= (1 << 26) - (1 << 2);
12038 insn1
|= 58 << 26; /* ld */
12039 insn2
= 0x7c636a14; /* add 3,3,13 */
12040 if (offset
!= (bfd_vma
) -1)
12041 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12042 if ((tls_mask
& TLS_EXPLICIT
) == 0)
12043 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12044 + R_PPC64_GOT_TPREL16_DS
);
12046 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
12047 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12052 insn1
= 0x3c6d0000; /* addis 3,13,0 */
12053 insn2
= 0x38630000; /* addi 3,3,0 */
12056 /* Was an LD reloc. */
12058 sec
= local_sections
[toc_symndx
];
12060 r_symndx
< symtab_hdr
->sh_info
;
12062 if (local_sections
[r_symndx
] == sec
)
12064 if (r_symndx
>= symtab_hdr
->sh_info
)
12065 r_symndx
= STN_UNDEF
;
12066 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12067 if (r_symndx
!= STN_UNDEF
)
12068 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12069 + sec
->output_offset
12070 + sec
->output_section
->vma
);
12072 else if (toc_symndx
!= 0)
12074 r_symndx
= toc_symndx
;
12075 rel
->r_addend
= toc_addend
;
12077 r_type
= R_PPC64_TPREL16_HA
;
12078 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12079 if (offset
!= (bfd_vma
) -1)
12081 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12082 R_PPC64_TPREL16_LO
);
12083 rel
[1].r_offset
= offset
+ d_offset
;
12084 rel
[1].r_addend
= rel
->r_addend
;
12087 bfd_put_32 (output_bfd
, insn1
,
12088 contents
+ rel
->r_offset
- d_offset
);
12089 if (offset
!= (bfd_vma
) -1)
12091 insn3
= bfd_get_32 (output_bfd
,
12092 contents
+ offset
+ 4);
12094 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12096 rel
[1].r_offset
+= 4;
12097 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12100 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12102 if ((tls_mask
& tls_gd
) == 0
12103 && (tls_gd
== 0 || toc_symndx
!= 0))
12105 /* We changed the symbol. Start over in order
12106 to get h, sym, sec etc. right. */
12113 case R_PPC64_TLSGD
:
12114 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12116 unsigned int insn2
, insn3
;
12117 bfd_vma offset
= rel
->r_offset
;
12119 if ((tls_mask
& TLS_TPRELGD
) != 0)
12122 r_type
= R_PPC64_NONE
;
12123 insn2
= 0x7c636a14; /* add 3,3,13 */
12128 if (toc_symndx
!= 0)
12130 r_symndx
= toc_symndx
;
12131 rel
->r_addend
= toc_addend
;
12133 r_type
= R_PPC64_TPREL16_LO
;
12134 rel
->r_offset
= offset
+ d_offset
;
12135 insn2
= 0x38630000; /* addi 3,3,0 */
12137 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12138 /* Zap the reloc on the _tls_get_addr call too. */
12139 BFD_ASSERT (offset
== rel
[1].r_offset
);
12140 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12141 insn3
= bfd_get_32 (output_bfd
,
12142 contents
+ offset
+ 4);
12144 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12146 rel
->r_offset
+= 4;
12147 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12150 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12151 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12159 case R_PPC64_TLSLD
:
12160 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12162 unsigned int insn2
, insn3
;
12163 bfd_vma offset
= rel
->r_offset
;
12166 sec
= local_sections
[toc_symndx
];
12168 r_symndx
< symtab_hdr
->sh_info
;
12170 if (local_sections
[r_symndx
] == sec
)
12172 if (r_symndx
>= symtab_hdr
->sh_info
)
12173 r_symndx
= STN_UNDEF
;
12174 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12175 if (r_symndx
!= STN_UNDEF
)
12176 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12177 + sec
->output_offset
12178 + sec
->output_section
->vma
);
12180 r_type
= R_PPC64_TPREL16_LO
;
12181 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12182 rel
->r_offset
= offset
+ d_offset
;
12183 /* Zap the reloc on the _tls_get_addr call too. */
12184 BFD_ASSERT (offset
== rel
[1].r_offset
);
12185 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12186 insn2
= 0x38630000; /* addi 3,3,0 */
12187 insn3
= bfd_get_32 (output_bfd
,
12188 contents
+ offset
+ 4);
12190 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12192 rel
->r_offset
+= 4;
12193 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12196 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12202 case R_PPC64_DTPMOD64
:
12203 if (rel
+ 1 < relend
12204 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12205 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12207 if ((tls_mask
& TLS_GD
) == 0)
12209 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12210 if ((tls_mask
& TLS_TPRELGD
) != 0)
12211 r_type
= R_PPC64_TPREL64
;
12214 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12215 r_type
= R_PPC64_NONE
;
12217 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12222 if ((tls_mask
& TLS_LD
) == 0)
12224 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12225 r_type
= R_PPC64_NONE
;
12226 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12231 case R_PPC64_TPREL64
:
12232 if ((tls_mask
& TLS_TPREL
) == 0)
12234 r_type
= R_PPC64_NONE
;
12235 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12240 /* Handle other relocations that tweak non-addend part of insn. */
12242 max_br_offset
= 1 << 25;
12243 addend
= rel
->r_addend
;
12249 /* Branch taken prediction relocations. */
12250 case R_PPC64_ADDR14_BRTAKEN
:
12251 case R_PPC64_REL14_BRTAKEN
:
12252 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12255 /* Branch not taken prediction relocations. */
12256 case R_PPC64_ADDR14_BRNTAKEN
:
12257 case R_PPC64_REL14_BRNTAKEN
:
12258 insn
|= bfd_get_32 (output_bfd
,
12259 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12262 case R_PPC64_REL14
:
12263 max_br_offset
= 1 << 15;
12266 case R_PPC64_REL24
:
12267 /* Calls to functions with a different TOC, such as calls to
12268 shared objects, need to alter the TOC pointer. This is
12269 done using a linkage stub. A REL24 branching to these
12270 linkage stubs needs to be followed by a nop, as the nop
12271 will be replaced with an instruction to restore the TOC
12276 && h
->oh
->is_func_descriptor
)
12277 fdh
= ppc_follow_link (h
->oh
);
12278 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12279 if (stub_entry
!= NULL
12280 && (stub_entry
->stub_type
== ppc_stub_plt_call
12281 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12282 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12284 bfd_boolean can_plt_call
= FALSE
;
12286 if (rel
->r_offset
+ 8 <= input_section
->size
)
12289 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12291 || nop
== CROR_151515
|| nop
== CROR_313131
)
12294 && (h
== htab
->tls_get_addr_fd
12295 || h
== htab
->tls_get_addr
)
12296 && !htab
->no_tls_get_addr_opt
)
12298 /* Special stub used, leave nop alone. */
12301 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12302 contents
+ rel
->r_offset
+ 4);
12303 can_plt_call
= TRUE
;
12309 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12311 /* If this is a plain branch rather than a branch
12312 and link, don't require a nop. However, don't
12313 allow tail calls in a shared library as they
12314 will result in r2 being corrupted. */
12316 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12317 if (info
->executable
&& (br
& 1) == 0)
12318 can_plt_call
= TRUE
;
12323 && strcmp (h
->elf
.root
.root
.string
,
12324 ".__libc_start_main") == 0)
12326 /* Allow crt1 branch to go via a toc adjusting stub. */
12327 can_plt_call
= TRUE
;
12331 if (strcmp (input_section
->output_section
->name
,
12333 || strcmp (input_section
->output_section
->name
,
12335 (*_bfd_error_handler
)
12336 (_("%B(%A+0x%lx): automatic multiple TOCs "
12337 "not supported using your crt files; "
12338 "recompile with -mminimal-toc or upgrade gcc"),
12341 (long) rel
->r_offset
);
12343 (*_bfd_error_handler
)
12344 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12345 "does not allow automatic multiple TOCs; "
12346 "recompile with -mminimal-toc or "
12347 "-fno-optimize-sibling-calls, "
12348 "or make `%s' extern"),
12351 (long) rel
->r_offset
,
12354 bfd_set_error (bfd_error_bad_value
);
12360 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12361 unresolved_reloc
= FALSE
;
12364 if ((stub_entry
== NULL
12365 || stub_entry
->stub_type
== ppc_stub_long_branch
12366 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12367 && get_opd_info (sec
) != NULL
)
12369 /* The branch destination is the value of the opd entry. */
12370 bfd_vma off
= (relocation
+ addend
12371 - sec
->output_section
->vma
12372 - sec
->output_offset
);
12373 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12374 if (dest
!= (bfd_vma
) -1)
12381 /* If the branch is out of reach we ought to have a long
12383 from
= (rel
->r_offset
12384 + input_section
->output_offset
12385 + input_section
->output_section
->vma
);
12387 if (stub_entry
!= NULL
12388 && (stub_entry
->stub_type
== ppc_stub_long_branch
12389 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12390 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12391 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12392 || (relocation
+ addend
- from
+ max_br_offset
12393 < 2 * max_br_offset
)))
12394 /* Don't use the stub if this branch is in range. */
12397 if (stub_entry
!= NULL
)
12399 /* Munge up the value and addend so that we call the stub
12400 rather than the procedure directly. */
12401 relocation
= (stub_entry
->stub_offset
12402 + stub_entry
->stub_sec
->output_offset
12403 + stub_entry
->stub_sec
->output_section
->vma
);
12411 /* Set 'a' bit. This is 0b00010 in BO field for branch
12412 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12413 for branch on CTR insns (BO == 1a00t or 1a01t). */
12414 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12415 insn
|= 0x02 << 21;
12416 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12417 insn
|= 0x08 << 21;
12423 /* Invert 'y' bit if not the default. */
12424 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12425 insn
^= 0x01 << 21;
12428 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12431 /* NOP out calls to undefined weak functions.
12432 We can thus call a weak function without first
12433 checking whether the function is defined. */
12435 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12436 && h
->elf
.dynindx
== -1
12437 && r_type
== R_PPC64_REL24
12441 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12447 /* Set `addend'. */
12452 (*_bfd_error_handler
)
12453 (_("%B: unknown relocation type %d for symbol %s"),
12454 input_bfd
, (int) r_type
, sym_name
);
12456 bfd_set_error (bfd_error_bad_value
);
12462 case R_PPC64_TLSGD
:
12463 case R_PPC64_TLSLD
:
12464 case R_PPC64_GNU_VTINHERIT
:
12465 case R_PPC64_GNU_VTENTRY
:
12468 /* GOT16 relocations. Like an ADDR16 using the symbol's
12469 address in the GOT as relocation value instead of the
12470 symbol's value itself. Also, create a GOT entry for the
12471 symbol and put the symbol value there. */
12472 case R_PPC64_GOT_TLSGD16
:
12473 case R_PPC64_GOT_TLSGD16_LO
:
12474 case R_PPC64_GOT_TLSGD16_HI
:
12475 case R_PPC64_GOT_TLSGD16_HA
:
12476 tls_type
= TLS_TLS
| TLS_GD
;
12479 case R_PPC64_GOT_TLSLD16
:
12480 case R_PPC64_GOT_TLSLD16_LO
:
12481 case R_PPC64_GOT_TLSLD16_HI
:
12482 case R_PPC64_GOT_TLSLD16_HA
:
12483 tls_type
= TLS_TLS
| TLS_LD
;
12486 case R_PPC64_GOT_TPREL16_DS
:
12487 case R_PPC64_GOT_TPREL16_LO_DS
:
12488 case R_PPC64_GOT_TPREL16_HI
:
12489 case R_PPC64_GOT_TPREL16_HA
:
12490 tls_type
= TLS_TLS
| TLS_TPREL
;
12493 case R_PPC64_GOT_DTPREL16_DS
:
12494 case R_PPC64_GOT_DTPREL16_LO_DS
:
12495 case R_PPC64_GOT_DTPREL16_HI
:
12496 case R_PPC64_GOT_DTPREL16_HA
:
12497 tls_type
= TLS_TLS
| TLS_DTPREL
;
12500 case R_PPC64_GOT16
:
12501 case R_PPC64_GOT16_LO
:
12502 case R_PPC64_GOT16_HI
:
12503 case R_PPC64_GOT16_HA
:
12504 case R_PPC64_GOT16_DS
:
12505 case R_PPC64_GOT16_LO_DS
:
12508 /* Relocation is to the entry for this symbol in the global
12513 unsigned long indx
= 0;
12514 struct got_entry
*ent
;
12516 if (tls_type
== (TLS_TLS
| TLS_LD
)
12518 || !h
->elf
.def_dynamic
))
12519 ent
= ppc64_tlsld_got (input_bfd
);
12525 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12526 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12529 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12530 /* This is actually a static link, or it is a
12531 -Bsymbolic link and the symbol is defined
12532 locally, or the symbol was forced to be local
12533 because of a version file. */
12537 indx
= h
->elf
.dynindx
;
12538 unresolved_reloc
= FALSE
;
12540 ent
= h
->elf
.got
.glist
;
12544 if (local_got_ents
== NULL
)
12546 ent
= local_got_ents
[r_symndx
];
12549 for (; ent
!= NULL
; ent
= ent
->next
)
12550 if (ent
->addend
== orig_addend
12551 && ent
->owner
== input_bfd
12552 && ent
->tls_type
== tls_type
)
12558 if (ent
->is_indirect
)
12559 ent
= ent
->got
.ent
;
12560 offp
= &ent
->got
.offset
;
12561 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12565 /* The offset must always be a multiple of 8. We use the
12566 least significant bit to record whether we have already
12567 processed this entry. */
12569 if ((off
& 1) != 0)
12573 /* Generate relocs for the dynamic linker, except in
12574 the case of TLSLD where we'll use one entry per
12582 ? h
->elf
.type
== STT_GNU_IFUNC
12583 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12584 if ((info
->shared
|| indx
!= 0)
12586 || (tls_type
== (TLS_TLS
| TLS_LD
)
12587 && !h
->elf
.def_dynamic
)
12588 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12589 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12590 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12592 relgot
= htab
->reliplt
;
12593 if (relgot
!= NULL
)
12595 outrel
.r_offset
= (got
->output_section
->vma
12596 + got
->output_offset
12598 outrel
.r_addend
= addend
;
12599 if (tls_type
& (TLS_LD
| TLS_GD
))
12601 outrel
.r_addend
= 0;
12602 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12603 if (tls_type
== (TLS_TLS
| TLS_GD
))
12605 loc
= relgot
->contents
;
12606 loc
+= (relgot
->reloc_count
++
12607 * sizeof (Elf64_External_Rela
));
12608 bfd_elf64_swap_reloca_out (output_bfd
,
12610 outrel
.r_offset
+= 8;
12611 outrel
.r_addend
= addend
;
12613 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12616 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12617 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12618 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12619 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12620 else if (indx
!= 0)
12621 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12625 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12627 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12629 /* Write the .got section contents for the sake
12631 loc
= got
->contents
+ off
;
12632 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12636 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12638 outrel
.r_addend
+= relocation
;
12639 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12640 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12642 loc
= relgot
->contents
;
12643 loc
+= (relgot
->reloc_count
++
12644 * sizeof (Elf64_External_Rela
));
12645 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12648 /* Init the .got section contents here if we're not
12649 emitting a reloc. */
12652 relocation
+= addend
;
12653 if (tls_type
== (TLS_TLS
| TLS_LD
))
12655 else if (tls_type
!= 0)
12657 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12658 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12659 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12661 if (tls_type
== (TLS_TLS
| TLS_GD
))
12663 bfd_put_64 (output_bfd
, relocation
,
12664 got
->contents
+ off
+ 8);
12669 bfd_put_64 (output_bfd
, relocation
,
12670 got
->contents
+ off
);
12674 if (off
>= (bfd_vma
) -2)
12677 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12678 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12682 case R_PPC64_PLT16_HA
:
12683 case R_PPC64_PLT16_HI
:
12684 case R_PPC64_PLT16_LO
:
12685 case R_PPC64_PLT32
:
12686 case R_PPC64_PLT64
:
12687 /* Relocation is to the entry for this symbol in the
12688 procedure linkage table. */
12690 /* Resolve a PLT reloc against a local symbol directly,
12691 without using the procedure linkage table. */
12695 /* It's possible that we didn't make a PLT entry for this
12696 symbol. This happens when statically linking PIC code,
12697 or when using -Bsymbolic. Go find a match if there is a
12699 if (htab
->plt
!= NULL
)
12701 struct plt_entry
*ent
;
12702 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12703 if (ent
->addend
== orig_addend
12704 && ent
->plt
.offset
!= (bfd_vma
) -1)
12706 relocation
= (htab
->plt
->output_section
->vma
12707 + htab
->plt
->output_offset
12708 + ent
->plt
.offset
);
12709 unresolved_reloc
= FALSE
;
12715 /* Relocation value is TOC base. */
12716 relocation
= TOCstart
;
12717 if (r_symndx
== STN_UNDEF
)
12718 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12719 else if (unresolved_reloc
)
12721 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12722 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12724 unresolved_reloc
= TRUE
;
12727 /* TOC16 relocs. We want the offset relative to the TOC base,
12728 which is the address of the start of the TOC plus 0x8000.
12729 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12731 case R_PPC64_TOC16
:
12732 case R_PPC64_TOC16_LO
:
12733 case R_PPC64_TOC16_HI
:
12734 case R_PPC64_TOC16_DS
:
12735 case R_PPC64_TOC16_LO_DS
:
12736 case R_PPC64_TOC16_HA
:
12737 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12740 /* Relocate against the beginning of the section. */
12741 case R_PPC64_SECTOFF
:
12742 case R_PPC64_SECTOFF_LO
:
12743 case R_PPC64_SECTOFF_HI
:
12744 case R_PPC64_SECTOFF_DS
:
12745 case R_PPC64_SECTOFF_LO_DS
:
12746 case R_PPC64_SECTOFF_HA
:
12748 addend
-= sec
->output_section
->vma
;
12751 case R_PPC64_REL16
:
12752 case R_PPC64_REL16_LO
:
12753 case R_PPC64_REL16_HI
:
12754 case R_PPC64_REL16_HA
:
12757 case R_PPC64_REL14
:
12758 case R_PPC64_REL14_BRNTAKEN
:
12759 case R_PPC64_REL14_BRTAKEN
:
12760 case R_PPC64_REL24
:
12763 case R_PPC64_TPREL16
:
12764 case R_PPC64_TPREL16_LO
:
12765 case R_PPC64_TPREL16_HI
:
12766 case R_PPC64_TPREL16_HA
:
12767 case R_PPC64_TPREL16_DS
:
12768 case R_PPC64_TPREL16_LO_DS
:
12769 case R_PPC64_TPREL16_HIGHER
:
12770 case R_PPC64_TPREL16_HIGHERA
:
12771 case R_PPC64_TPREL16_HIGHEST
:
12772 case R_PPC64_TPREL16_HIGHESTA
:
12774 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12775 && h
->elf
.dynindx
== -1)
12777 /* Make this relocation against an undefined weak symbol
12778 resolve to zero. This is really just a tweak, since
12779 code using weak externs ought to check that they are
12780 defined before using them. */
12781 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12783 insn
= bfd_get_32 (output_bfd
, p
);
12784 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12786 bfd_put_32 (output_bfd
, insn
, p
);
12789 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12791 /* The TPREL16 relocs shouldn't really be used in shared
12792 libs as they will result in DT_TEXTREL being set, but
12793 support them anyway. */
12797 case R_PPC64_DTPREL16
:
12798 case R_PPC64_DTPREL16_LO
:
12799 case R_PPC64_DTPREL16_HI
:
12800 case R_PPC64_DTPREL16_HA
:
12801 case R_PPC64_DTPREL16_DS
:
12802 case R_PPC64_DTPREL16_LO_DS
:
12803 case R_PPC64_DTPREL16_HIGHER
:
12804 case R_PPC64_DTPREL16_HIGHERA
:
12805 case R_PPC64_DTPREL16_HIGHEST
:
12806 case R_PPC64_DTPREL16_HIGHESTA
:
12807 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12810 case R_PPC64_DTPMOD64
:
12815 case R_PPC64_TPREL64
:
12816 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12819 case R_PPC64_DTPREL64
:
12820 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12823 /* Relocations that may need to be propagated if this is a
12825 case R_PPC64_REL30
:
12826 case R_PPC64_REL32
:
12827 case R_PPC64_REL64
:
12828 case R_PPC64_ADDR14
:
12829 case R_PPC64_ADDR14_BRNTAKEN
:
12830 case R_PPC64_ADDR14_BRTAKEN
:
12831 case R_PPC64_ADDR16
:
12832 case R_PPC64_ADDR16_DS
:
12833 case R_PPC64_ADDR16_HA
:
12834 case R_PPC64_ADDR16_HI
:
12835 case R_PPC64_ADDR16_HIGHER
:
12836 case R_PPC64_ADDR16_HIGHERA
:
12837 case R_PPC64_ADDR16_HIGHEST
:
12838 case R_PPC64_ADDR16_HIGHESTA
:
12839 case R_PPC64_ADDR16_LO
:
12840 case R_PPC64_ADDR16_LO_DS
:
12841 case R_PPC64_ADDR24
:
12842 case R_PPC64_ADDR32
:
12843 case R_PPC64_ADDR64
:
12844 case R_PPC64_UADDR16
:
12845 case R_PPC64_UADDR32
:
12846 case R_PPC64_UADDR64
:
12848 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12851 if (NO_OPD_RELOCS
&& is_opd
)
12856 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12857 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12858 && (must_be_dyn_reloc (info
, r_type
)
12859 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12860 || (ELIMINATE_COPY_RELOCS
12863 && h
->elf
.dynindx
!= -1
12864 && !h
->elf
.non_got_ref
12865 && !h
->elf
.def_regular
)
12868 ? h
->elf
.type
== STT_GNU_IFUNC
12869 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12871 bfd_boolean skip
, relocate
;
12875 /* When generating a dynamic object, these relocations
12876 are copied into the output file to be resolved at run
12882 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12883 input_section
, rel
->r_offset
);
12884 if (out_off
== (bfd_vma
) -1)
12886 else if (out_off
== (bfd_vma
) -2)
12887 skip
= TRUE
, relocate
= TRUE
;
12888 out_off
+= (input_section
->output_section
->vma
12889 + input_section
->output_offset
);
12890 outrel
.r_offset
= out_off
;
12891 outrel
.r_addend
= rel
->r_addend
;
12893 /* Optimize unaligned reloc use. */
12894 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12895 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12896 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12897 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12898 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12899 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12900 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12901 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12902 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12905 memset (&outrel
, 0, sizeof outrel
);
12906 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
12908 && r_type
!= R_PPC64_TOC
)
12909 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12912 /* This symbol is local, or marked to become local,
12913 or this is an opd section reloc which must point
12914 at a local function. */
12915 outrel
.r_addend
+= relocation
;
12916 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12918 if (is_opd
&& h
!= NULL
)
12920 /* Lie about opd entries. This case occurs
12921 when building shared libraries and we
12922 reference a function in another shared
12923 lib. The same thing happens for a weak
12924 definition in an application that's
12925 overridden by a strong definition in a
12926 shared lib. (I believe this is a generic
12927 bug in binutils handling of weak syms.)
12928 In these cases we won't use the opd
12929 entry in this lib. */
12930 unresolved_reloc
= FALSE
;
12933 && r_type
== R_PPC64_ADDR64
12935 ? h
->elf
.type
== STT_GNU_IFUNC
12936 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12937 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12940 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12942 /* We need to relocate .opd contents for ld.so.
12943 Prelink also wants simple and consistent rules
12944 for relocs. This make all RELATIVE relocs have
12945 *r_offset equal to r_addend. */
12954 ? h
->elf
.type
== STT_GNU_IFUNC
12955 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12957 (*_bfd_error_handler
)
12958 (_("%B(%A+0x%lx): relocation %s for indirect "
12959 "function %s unsupported"),
12962 (long) rel
->r_offset
,
12963 ppc64_elf_howto_table
[r_type
]->name
,
12967 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
12969 else if (sec
== NULL
|| sec
->owner
== NULL
)
12971 bfd_set_error (bfd_error_bad_value
);
12978 osec
= sec
->output_section
;
12979 indx
= elf_section_data (osec
)->dynindx
;
12983 if ((osec
->flags
& SEC_READONLY
) == 0
12984 && htab
->elf
.data_index_section
!= NULL
)
12985 osec
= htab
->elf
.data_index_section
;
12987 osec
= htab
->elf
.text_index_section
;
12988 indx
= elf_section_data (osec
)->dynindx
;
12990 BFD_ASSERT (indx
!= 0);
12992 /* We are turning this relocation into one
12993 against a section symbol, so subtract out
12994 the output section's address but not the
12995 offset of the input section in the output
12997 outrel
.r_addend
-= osec
->vma
;
13000 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
13004 sreloc
= elf_section_data (input_section
)->sreloc
;
13005 if (!htab
->elf
.dynamic_sections_created
)
13006 sreloc
= htab
->reliplt
;
13007 if (sreloc
== NULL
)
13010 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
13013 loc
= sreloc
->contents
;
13014 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13015 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13017 /* If this reloc is against an external symbol, it will
13018 be computed at runtime, so there's no need to do
13019 anything now. However, for the sake of prelink ensure
13020 that the section contents are a known value. */
13023 unresolved_reloc
= FALSE
;
13024 /* The value chosen here is quite arbitrary as ld.so
13025 ignores section contents except for the special
13026 case of .opd where the contents might be accessed
13027 before relocation. Choose zero, as that won't
13028 cause reloc overflow. */
13031 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13032 to improve backward compatibility with older
13034 if (r_type
== R_PPC64_ADDR64
)
13035 addend
= outrel
.r_addend
;
13036 /* Adjust pc_relative relocs to have zero in *r_offset. */
13037 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
13038 addend
= (input_section
->output_section
->vma
13039 + input_section
->output_offset
13046 case R_PPC64_GLOB_DAT
:
13047 case R_PPC64_JMP_SLOT
:
13048 case R_PPC64_JMP_IREL
:
13049 case R_PPC64_RELATIVE
:
13050 /* We shouldn't ever see these dynamic relocs in relocatable
13052 /* Fall through. */
13054 case R_PPC64_PLTGOT16
:
13055 case R_PPC64_PLTGOT16_DS
:
13056 case R_PPC64_PLTGOT16_HA
:
13057 case R_PPC64_PLTGOT16_HI
:
13058 case R_PPC64_PLTGOT16_LO
:
13059 case R_PPC64_PLTGOT16_LO_DS
:
13060 case R_PPC64_PLTREL32
:
13061 case R_PPC64_PLTREL64
:
13062 /* These ones haven't been implemented yet. */
13064 (*_bfd_error_handler
)
13065 (_("%B: relocation %s is not supported for symbol %s."),
13067 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
13069 bfd_set_error (bfd_error_invalid_operation
);
13074 /* Multi-instruction sequences that access the TOC can be
13075 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13076 to nop; addi rb,r2,x; */
13082 case R_PPC64_GOT_TLSLD16_HI
:
13083 case R_PPC64_GOT_TLSGD16_HI
:
13084 case R_PPC64_GOT_TPREL16_HI
:
13085 case R_PPC64_GOT_DTPREL16_HI
:
13086 case R_PPC64_GOT16_HI
:
13087 case R_PPC64_TOC16_HI
:
13088 /* These relocs would only be useful if building up an
13089 offset to later add to r2, perhaps in an indexed
13090 addressing mode instruction. Don't try to optimize.
13091 Unfortunately, the possibility of someone building up an
13092 offset like this or even with the HA relocs, means that
13093 we need to check the high insn when optimizing the low
13097 case R_PPC64_GOT_TLSLD16_HA
:
13098 case R_PPC64_GOT_TLSGD16_HA
:
13099 case R_PPC64_GOT_TPREL16_HA
:
13100 case R_PPC64_GOT_DTPREL16_HA
:
13101 case R_PPC64_GOT16_HA
:
13102 case R_PPC64_TOC16_HA
:
13103 /* nop is done later. */
13106 case R_PPC64_GOT_TLSLD16_LO
:
13107 case R_PPC64_GOT_TLSGD16_LO
:
13108 case R_PPC64_GOT_TPREL16_LO_DS
:
13109 case R_PPC64_GOT_DTPREL16_LO_DS
:
13110 case R_PPC64_GOT16_LO
:
13111 case R_PPC64_GOT16_LO_DS
:
13112 case R_PPC64_TOC16_LO
:
13113 case R_PPC64_TOC16_LO_DS
:
13114 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
13116 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13117 insn
= bfd_get_32 (input_bfd
, p
);
13118 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
13119 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
13120 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
13121 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
13122 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
13123 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
13124 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
13125 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
13126 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
13127 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
13128 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
13129 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
13130 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
13131 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
13132 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13133 && (insn
& 3) != 1)
13134 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
13135 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
13137 unsigned int reg
= (insn
>> 16) & 0x1f;
13138 const Elf_Internal_Rela
*ha
;
13139 bfd_boolean match_addend
;
13141 match_addend
= (sym
!= NULL
13142 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
13143 ha
= ha_reloc_match (relocs
, rel
, ®
, match_addend
,
13144 input_bfd
, contents
);
13147 insn
&= ~(0x1f << 16);
13149 bfd_put_32 (input_bfd
, insn
, p
);
13150 if (ha_opt
== NULL
)
13152 ha_opt
= bfd_zmalloc (input_section
->reloc_count
);
13153 if (ha_opt
== NULL
)
13156 ha_opt
[ha
- relocs
] = 1;
13159 /* If we don't find a matching high part insn,
13160 something is fishy. Refuse to nop any high
13161 part insn in this section. */
13168 /* Do any further special processing. */
13174 case R_PPC64_ADDR16_HA
:
13175 case R_PPC64_REL16_HA
:
13176 case R_PPC64_ADDR16_HIGHERA
:
13177 case R_PPC64_ADDR16_HIGHESTA
:
13178 case R_PPC64_TOC16_HA
:
13179 case R_PPC64_SECTOFF_HA
:
13180 case R_PPC64_TPREL16_HA
:
13181 case R_PPC64_DTPREL16_HA
:
13182 case R_PPC64_TPREL16_HIGHER
:
13183 case R_PPC64_TPREL16_HIGHERA
:
13184 case R_PPC64_TPREL16_HIGHEST
:
13185 case R_PPC64_TPREL16_HIGHESTA
:
13186 case R_PPC64_DTPREL16_HIGHER
:
13187 case R_PPC64_DTPREL16_HIGHERA
:
13188 case R_PPC64_DTPREL16_HIGHEST
:
13189 case R_PPC64_DTPREL16_HIGHESTA
:
13190 /* It's just possible that this symbol is a weak symbol
13191 that's not actually defined anywhere. In that case,
13192 'sec' would be NULL, and we should leave the symbol
13193 alone (it will be set to zero elsewhere in the link). */
13198 case R_PPC64_GOT16_HA
:
13199 case R_PPC64_PLTGOT16_HA
:
13200 case R_PPC64_PLT16_HA
:
13201 case R_PPC64_GOT_TLSGD16_HA
:
13202 case R_PPC64_GOT_TLSLD16_HA
:
13203 case R_PPC64_GOT_TPREL16_HA
:
13204 case R_PPC64_GOT_DTPREL16_HA
:
13205 /* Add 0x10000 if sign bit in 0:15 is set.
13206 Bits 0:15 are not used. */
13210 case R_PPC64_ADDR16_DS
:
13211 case R_PPC64_ADDR16_LO_DS
:
13212 case R_PPC64_GOT16_DS
:
13213 case R_PPC64_GOT16_LO_DS
:
13214 case R_PPC64_PLT16_LO_DS
:
13215 case R_PPC64_SECTOFF_DS
:
13216 case R_PPC64_SECTOFF_LO_DS
:
13217 case R_PPC64_TOC16_DS
:
13218 case R_PPC64_TOC16_LO_DS
:
13219 case R_PPC64_PLTGOT16_DS
:
13220 case R_PPC64_PLTGOT16_LO_DS
:
13221 case R_PPC64_GOT_TPREL16_DS
:
13222 case R_PPC64_GOT_TPREL16_LO_DS
:
13223 case R_PPC64_GOT_DTPREL16_DS
:
13224 case R_PPC64_GOT_DTPREL16_LO_DS
:
13225 case R_PPC64_TPREL16_DS
:
13226 case R_PPC64_TPREL16_LO_DS
:
13227 case R_PPC64_DTPREL16_DS
:
13228 case R_PPC64_DTPREL16_LO_DS
:
13229 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13231 /* If this reloc is against an lq insn, then the value must be
13232 a multiple of 16. This is somewhat of a hack, but the
13233 "correct" way to do this by defining _DQ forms of all the
13234 _DS relocs bloats all reloc switches in this file. It
13235 doesn't seem to make much sense to use any of these relocs
13236 in data, so testing the insn should be safe. */
13237 if ((insn
& (0x3f << 26)) == (56u << 26))
13239 if (((relocation
+ addend
) & mask
) != 0)
13241 (*_bfd_error_handler
)
13242 (_("%B(%A+0x%lx): error: %s not a multiple of %u"),
13243 input_bfd
, input_section
, (long) rel
->r_offset
,
13244 ppc64_elf_howto_table
[r_type
]->name
,
13246 bfd_set_error (bfd_error_bad_value
);
13253 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13254 because such sections are not SEC_ALLOC and thus ld.so will
13255 not process them. */
13256 if (unresolved_reloc
13257 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13258 && h
->elf
.def_dynamic
))
13260 (*_bfd_error_handler
)
13261 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13264 (long) rel
->r_offset
,
13265 ppc64_elf_howto_table
[(int) r_type
]->name
,
13266 h
->elf
.root
.root
.string
);
13270 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13278 if (r
!= bfd_reloc_ok
)
13280 if (sym_name
== NULL
)
13281 sym_name
= "(null)";
13282 if (r
== bfd_reloc_overflow
)
13287 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13288 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13290 /* Assume this is a call protected by other code that
13291 detects the symbol is undefined. If this is the case,
13292 we can safely ignore the overflow. If not, the
13293 program is hosed anyway, and a little warning isn't
13299 if (!((*info
->callbacks
->reloc_overflow
)
13300 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13301 ppc64_elf_howto_table
[r_type
]->name
,
13302 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13307 (*_bfd_error_handler
)
13308 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13311 (long) rel
->r_offset
,
13312 ppc64_elf_howto_table
[r_type
]->name
,
13320 if (ha_opt
!= NULL
)
13324 unsigned char *opt
= ha_opt
;
13326 relend
= relocs
+ input_section
->reloc_count
;
13327 for (; rel
< relend
; opt
++, rel
++)
13330 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13331 bfd_put_32 (input_bfd
, NOP
, p
);
13337 /* If we're emitting relocations, then shortly after this function
13338 returns, reloc offsets and addends for this section will be
13339 adjusted. Worse, reloc symbol indices will be for the output
13340 file rather than the input. Save a copy of the relocs for
13341 opd_entry_value. */
13342 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13345 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13346 rel
= bfd_alloc (input_bfd
, amt
);
13347 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13348 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13351 memcpy (rel
, relocs
, amt
);
13356 /* Adjust the value of any local symbols in opd sections. */
13359 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13360 const char *name ATTRIBUTE_UNUSED
,
13361 Elf_Internal_Sym
*elfsym
,
13362 asection
*input_sec
,
13363 struct elf_link_hash_entry
*h
)
13365 struct _opd_sec_data
*opd
;
13372 opd
= get_opd_info (input_sec
);
13373 if (opd
== NULL
|| opd
->adjust
== NULL
)
13376 value
= elfsym
->st_value
- input_sec
->output_offset
;
13377 if (!info
->relocatable
)
13378 value
-= input_sec
->output_section
->vma
;
13380 adjust
= opd
->adjust
[value
/ 8];
13384 elfsym
->st_value
+= adjust
;
13388 /* Finish up dynamic symbol handling. We set the contents of various
13389 dynamic sections here. */
13392 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13393 struct bfd_link_info
*info
,
13394 struct elf_link_hash_entry
*h
,
13395 Elf_Internal_Sym
*sym
)
13397 struct ppc_link_hash_table
*htab
;
13398 struct plt_entry
*ent
;
13399 Elf_Internal_Rela rela
;
13402 htab
= ppc_hash_table (info
);
13406 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13407 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13409 /* This symbol has an entry in the procedure linkage
13410 table. Set it up. */
13411 if (!htab
->elf
.dynamic_sections_created
13412 || h
->dynindx
== -1)
13414 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13416 && (h
->root
.type
== bfd_link_hash_defined
13417 || h
->root
.type
== bfd_link_hash_defweak
));
13418 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13419 + htab
->iplt
->output_offset
13420 + ent
->plt
.offset
);
13421 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13422 rela
.r_addend
= (h
->root
.u
.def
.value
13423 + h
->root
.u
.def
.section
->output_offset
13424 + h
->root
.u
.def
.section
->output_section
->vma
13426 loc
= (htab
->reliplt
->contents
13427 + (htab
->reliplt
->reloc_count
++
13428 * sizeof (Elf64_External_Rela
)));
13432 rela
.r_offset
= (htab
->plt
->output_section
->vma
13433 + htab
->plt
->output_offset
13434 + ent
->plt
.offset
);
13435 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13436 rela
.r_addend
= ent
->addend
;
13437 loc
= (htab
->relplt
->contents
13438 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13439 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13441 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13446 /* This symbol needs a copy reloc. Set it up. */
13448 if (h
->dynindx
== -1
13449 || (h
->root
.type
!= bfd_link_hash_defined
13450 && h
->root
.type
!= bfd_link_hash_defweak
)
13451 || htab
->relbss
== NULL
)
13454 rela
.r_offset
= (h
->root
.u
.def
.value
13455 + h
->root
.u
.def
.section
->output_section
->vma
13456 + h
->root
.u
.def
.section
->output_offset
);
13457 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13459 loc
= htab
->relbss
->contents
;
13460 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13461 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13464 /* Mark some specially defined symbols as absolute. */
13465 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13466 sym
->st_shndx
= SHN_ABS
;
13471 /* Used to decide how to sort relocs in an optimal manner for the
13472 dynamic linker, before writing them out. */
13474 static enum elf_reloc_type_class
13475 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13477 enum elf_ppc64_reloc_type r_type
;
13479 r_type
= ELF64_R_TYPE (rela
->r_info
);
13482 case R_PPC64_RELATIVE
:
13483 return reloc_class_relative
;
13484 case R_PPC64_JMP_SLOT
:
13485 return reloc_class_plt
;
13487 return reloc_class_copy
;
13489 return reloc_class_normal
;
13493 /* Finish up the dynamic sections. */
13496 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13497 struct bfd_link_info
*info
)
13499 struct ppc_link_hash_table
*htab
;
13503 htab
= ppc_hash_table (info
);
13507 dynobj
= htab
->elf
.dynobj
;
13508 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13510 if (htab
->elf
.dynamic_sections_created
)
13512 Elf64_External_Dyn
*dyncon
, *dynconend
;
13514 if (sdyn
== NULL
|| htab
->got
== NULL
)
13517 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13518 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13519 for (; dyncon
< dynconend
; dyncon
++)
13521 Elf_Internal_Dyn dyn
;
13524 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13531 case DT_PPC64_GLINK
:
13533 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13534 /* We stupidly defined DT_PPC64_GLINK to be the start
13535 of glink rather than the first entry point, which is
13536 what ld.so needs, and now have a bigger stub to
13537 support automatic multiple TOCs. */
13538 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13542 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13545 dyn
.d_un
.d_ptr
= s
->vma
;
13548 case DT_PPC64_OPDSZ
:
13549 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13552 dyn
.d_un
.d_val
= s
->size
;
13557 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13562 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13566 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13570 /* Don't count procedure linkage table relocs in the
13571 overall reloc count. */
13575 dyn
.d_un
.d_val
-= s
->size
;
13579 /* We may not be using the standard ELF linker script.
13580 If .rela.plt is the first .rela section, we adjust
13581 DT_RELA to not include it. */
13585 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13587 dyn
.d_un
.d_ptr
+= s
->size
;
13591 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13595 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13597 /* Fill in the first entry in the global offset table.
13598 We use it to hold the link-time TOCbase. */
13599 bfd_put_64 (output_bfd
,
13600 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13601 htab
->got
->contents
);
13603 /* Set .got entry size. */
13604 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13607 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13609 /* Set .plt entry size. */
13610 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13614 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13615 brlt ourselves if emitrelocations. */
13616 if (htab
->brlt
!= NULL
13617 && htab
->brlt
->reloc_count
!= 0
13618 && !_bfd_elf_link_output_relocs (output_bfd
,
13620 elf_section_data (htab
->brlt
)->rela
.hdr
,
13621 elf_section_data (htab
->brlt
)->relocs
,
13625 if (htab
->glink
!= NULL
13626 && htab
->glink
->reloc_count
!= 0
13627 && !_bfd_elf_link_output_relocs (output_bfd
,
13629 elf_section_data (htab
->glink
)->rela
.hdr
,
13630 elf_section_data (htab
->glink
)->relocs
,
13634 /* We need to handle writing out multiple GOT sections ourselves,
13635 since we didn't add them to DYNOBJ. We know dynobj is the first
13637 while ((dynobj
= dynobj
->link_next
) != NULL
)
13641 if (!is_ppc64_elf (dynobj
))
13644 s
= ppc64_elf_tdata (dynobj
)->got
;
13647 && s
->output_section
!= bfd_abs_section_ptr
13648 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13649 s
->contents
, s
->output_offset
,
13652 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13655 && s
->output_section
!= bfd_abs_section_ptr
13656 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13657 s
->contents
, s
->output_offset
,
13665 #include "elf64-target.h"