1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009 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 <amodra@bigpond.net.au>
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_MACHINE_CODE EM_PPC64
65 #define ELF_MAXPAGESIZE 0x10000
66 #define ELF_COMMONPAGESIZE 0x1000
67 #define elf_info_to_howto ppc64_elf_info_to_howto
69 #define elf_backend_want_got_sym 0
70 #define elf_backend_want_plt_sym 0
71 #define elf_backend_plt_alignment 3
72 #define elf_backend_plt_not_loaded 1
73 #define elf_backend_got_header_size 8
74 #define elf_backend_can_gc_sections 1
75 #define elf_backend_can_refcount 1
76 #define elf_backend_rela_normal 1
77 #define elf_backend_default_execstack 0
79 #define bfd_elf64_mkobject ppc64_elf_mkobject
80 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
81 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
82 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
86 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define elf_backend_object_p ppc64_elf_object_p
89 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
91 #define elf_backend_write_core_note ppc64_elf_write_core_note
92 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
94 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
95 #define elf_backend_check_directives ppc64_elf_process_dot_syms
96 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
97 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
98 #define elf_backend_check_relocs ppc64_elf_check_relocs
99 #define elf_backend_gc_keep ppc64_elf_gc_keep
100 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
101 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
105 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
107 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
108 #define elf_backend_action_discarded ppc64_elf_action_discarded
109 #define elf_backend_relocate_section ppc64_elf_relocate_section
110 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
113 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
114 #define elf_backend_special_sections ppc64_elf_special_sections
116 /* The name of the dynamic interpreter. This is put in the .interp
118 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
120 /* The size in bytes of an entry in the procedure linkage table. */
121 #define PLT_ENTRY_SIZE 24
123 /* The initial size of the plt reserved for the dynamic linker. */
124 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
126 /* TOC base pointers offset from start of TOC. */
127 #define TOC_BASE_OFF 0x8000
129 /* Offset of tp and dtp pointers from start of TLS block. */
130 #define TP_OFFSET 0x7000
131 #define DTP_OFFSET 0x8000
133 /* .plt call stub instructions. The normal stub is like this, but
134 sometimes the .plt entry crosses a 64k boundary and we need to
135 insert an addi to adjust r12. */
136 #define PLT_CALL_STUB_SIZE (7*4)
137 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
138 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
139 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
140 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
141 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
142 /* ld %r11,xxx+16@l(%r12) */
143 #define BCTR 0x4e800420 /* bctr */
146 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
147 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
148 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
149 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
151 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
152 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
154 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
156 /* glink call stub instructions. We enter with the index in R0. */
157 #define GLINK_CALL_STUB_SIZE (16*4)
161 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
162 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
164 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
165 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
166 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
167 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
175 #define NOP 0x60000000
177 /* Some other nops. */
178 #define CROR_151515 0x4def7b82
179 #define CROR_313131 0x4ffffb82
181 /* .glink entries for the first 32k functions are two instructions. */
182 #define LI_R0_0 0x38000000 /* li %r0,0 */
183 #define B_DOT 0x48000000 /* b . */
185 /* After that, we need two instructions to load the index, followed by
187 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
188 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
190 /* Instructions used by the save and restore reg functions. */
191 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
192 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
193 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
194 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
195 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
196 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
197 #define LI_R12_0 0x39800000 /* li %r12,0 */
198 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
199 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
200 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
201 #define BLR 0x4e800020 /* blr */
203 /* Since .opd is an array of descriptors and each entry will end up
204 with identical R_PPC64_RELATIVE relocs, there is really no need to
205 propagate .opd relocs; The dynamic linker should be taught to
206 relocate .opd without reloc entries. */
207 #ifndef NO_OPD_RELOCS
208 #define NO_OPD_RELOCS 0
211 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
213 /* Relocation HOWTO's. */
214 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
216 static reloc_howto_type ppc64_elf_howto_raw
[] = {
217 /* This reloc does nothing. */
218 HOWTO (R_PPC64_NONE
, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE
, /* pc_relative */
224 complain_overflow_dont
, /* complain_on_overflow */
225 bfd_elf_generic_reloc
, /* special_function */
226 "R_PPC64_NONE", /* name */
227 FALSE
, /* partial_inplace */
230 FALSE
), /* pcrel_offset */
232 /* A standard 32 bit relocation. */
233 HOWTO (R_PPC64_ADDR32
, /* type */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
237 FALSE
, /* pc_relative */
239 complain_overflow_bitfield
, /* complain_on_overflow */
240 bfd_elf_generic_reloc
, /* special_function */
241 "R_PPC64_ADDR32", /* name */
242 FALSE
, /* partial_inplace */
244 0xffffffff, /* dst_mask */
245 FALSE
), /* pcrel_offset */
247 /* An absolute 26 bit branch; the lower two bits must be zero.
248 FIXME: we don't check that, we just clear them. */
249 HOWTO (R_PPC64_ADDR24
, /* type */
251 2, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE
, /* pc_relative */
255 complain_overflow_bitfield
, /* complain_on_overflow */
256 bfd_elf_generic_reloc
, /* special_function */
257 "R_PPC64_ADDR24", /* name */
258 FALSE
, /* partial_inplace */
260 0x03fffffc, /* dst_mask */
261 FALSE
), /* pcrel_offset */
263 /* A standard 16 bit relocation. */
264 HOWTO (R_PPC64_ADDR16
, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE
, /* pc_relative */
270 complain_overflow_bitfield
, /* complain_on_overflow */
271 bfd_elf_generic_reloc
, /* special_function */
272 "R_PPC64_ADDR16", /* name */
273 FALSE
, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE
), /* pcrel_offset */
278 /* A 16 bit relocation without overflow. */
279 HOWTO (R_PPC64_ADDR16_LO
, /* type */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_dont
,/* complain_on_overflow */
286 bfd_elf_generic_reloc
, /* special_function */
287 "R_PPC64_ADDR16_LO", /* name */
288 FALSE
, /* partial_inplace */
290 0xffff, /* dst_mask */
291 FALSE
), /* pcrel_offset */
293 /* Bits 16-31 of an address. */
294 HOWTO (R_PPC64_ADDR16_HI
, /* type */
296 1, /* size (0 = byte, 1 = short, 2 = long) */
298 FALSE
, /* pc_relative */
300 complain_overflow_dont
, /* complain_on_overflow */
301 bfd_elf_generic_reloc
, /* special_function */
302 "R_PPC64_ADDR16_HI", /* name */
303 FALSE
, /* partial_inplace */
305 0xffff, /* dst_mask */
306 FALSE
), /* pcrel_offset */
308 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
309 bits, treated as a signed number, is negative. */
310 HOWTO (R_PPC64_ADDR16_HA
, /* type */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
314 FALSE
, /* pc_relative */
316 complain_overflow_dont
, /* complain_on_overflow */
317 ppc64_elf_ha_reloc
, /* special_function */
318 "R_PPC64_ADDR16_HA", /* name */
319 FALSE
, /* partial_inplace */
321 0xffff, /* dst_mask */
322 FALSE
), /* pcrel_offset */
324 /* An absolute 16 bit branch; the lower two bits must be zero.
325 FIXME: we don't check that, we just clear them. */
326 HOWTO (R_PPC64_ADDR14
, /* type */
328 2, /* size (0 = byte, 1 = short, 2 = long) */
330 FALSE
, /* pc_relative */
332 complain_overflow_bitfield
, /* complain_on_overflow */
333 ppc64_elf_branch_reloc
, /* special_function */
334 "R_PPC64_ADDR14", /* name */
335 FALSE
, /* partial_inplace */
337 0x0000fffc, /* dst_mask */
338 FALSE
), /* pcrel_offset */
340 /* An absolute 16 bit branch, for which bit 10 should be set to
341 indicate that the branch is expected to be taken. The lower two
342 bits must be zero. */
343 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
347 FALSE
, /* pc_relative */
349 complain_overflow_bitfield
, /* complain_on_overflow */
350 ppc64_elf_brtaken_reloc
, /* special_function */
351 "R_PPC64_ADDR14_BRTAKEN",/* name */
352 FALSE
, /* partial_inplace */
354 0x0000fffc, /* dst_mask */
355 FALSE
), /* pcrel_offset */
357 /* An absolute 16 bit branch, for which bit 10 should be set to
358 indicate that the branch is not expected to be taken. The lower
359 two bits must be zero. */
360 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 FALSE
, /* pc_relative */
366 complain_overflow_bitfield
, /* complain_on_overflow */
367 ppc64_elf_brtaken_reloc
, /* special_function */
368 "R_PPC64_ADDR14_BRNTAKEN",/* name */
369 FALSE
, /* partial_inplace */
371 0x0000fffc, /* dst_mask */
372 FALSE
), /* pcrel_offset */
374 /* A relative 26 bit branch; the lower two bits must be zero. */
375 HOWTO (R_PPC64_REL24
, /* type */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 TRUE
, /* pc_relative */
381 complain_overflow_signed
, /* complain_on_overflow */
382 ppc64_elf_branch_reloc
, /* special_function */
383 "R_PPC64_REL24", /* name */
384 FALSE
, /* partial_inplace */
386 0x03fffffc, /* dst_mask */
387 TRUE
), /* pcrel_offset */
389 /* A relative 16 bit branch; the lower two bits must be zero. */
390 HOWTO (R_PPC64_REL14
, /* type */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
394 TRUE
, /* pc_relative */
396 complain_overflow_signed
, /* complain_on_overflow */
397 ppc64_elf_branch_reloc
, /* special_function */
398 "R_PPC64_REL14", /* name */
399 FALSE
, /* partial_inplace */
401 0x0000fffc, /* dst_mask */
402 TRUE
), /* pcrel_offset */
404 /* A relative 16 bit branch. Bit 10 should be set to indicate that
405 the branch is expected to be taken. The lower two bits must be
407 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
411 TRUE
, /* pc_relative */
413 complain_overflow_signed
, /* complain_on_overflow */
414 ppc64_elf_brtaken_reloc
, /* special_function */
415 "R_PPC64_REL14_BRTAKEN", /* name */
416 FALSE
, /* partial_inplace */
418 0x0000fffc, /* dst_mask */
419 TRUE
), /* pcrel_offset */
421 /* A relative 16 bit branch. Bit 10 should be set to indicate that
422 the branch is not expected to be taken. The lower two bits must
424 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
428 TRUE
, /* pc_relative */
430 complain_overflow_signed
, /* complain_on_overflow */
431 ppc64_elf_brtaken_reloc
, /* special_function */
432 "R_PPC64_REL14_BRNTAKEN",/* name */
433 FALSE
, /* partial_inplace */
435 0x0000fffc, /* dst_mask */
436 TRUE
), /* pcrel_offset */
438 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
440 HOWTO (R_PPC64_GOT16
, /* type */
442 1, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE
, /* pc_relative */
446 complain_overflow_signed
, /* complain_on_overflow */
447 ppc64_elf_unhandled_reloc
, /* special_function */
448 "R_PPC64_GOT16", /* name */
449 FALSE
, /* partial_inplace */
451 0xffff, /* dst_mask */
452 FALSE
), /* pcrel_offset */
454 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
456 HOWTO (R_PPC64_GOT16_LO
, /* type */
458 1, /* size (0 = byte, 1 = short, 2 = long) */
460 FALSE
, /* pc_relative */
462 complain_overflow_dont
, /* complain_on_overflow */
463 ppc64_elf_unhandled_reloc
, /* special_function */
464 "R_PPC64_GOT16_LO", /* name */
465 FALSE
, /* partial_inplace */
467 0xffff, /* dst_mask */
468 FALSE
), /* pcrel_offset */
470 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
472 HOWTO (R_PPC64_GOT16_HI
, /* type */
474 1, /* size (0 = byte, 1 = short, 2 = long) */
476 FALSE
, /* pc_relative */
478 complain_overflow_dont
,/* complain_on_overflow */
479 ppc64_elf_unhandled_reloc
, /* special_function */
480 "R_PPC64_GOT16_HI", /* name */
481 FALSE
, /* partial_inplace */
483 0xffff, /* dst_mask */
484 FALSE
), /* pcrel_offset */
486 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
488 HOWTO (R_PPC64_GOT16_HA
, /* type */
490 1, /* size (0 = byte, 1 = short, 2 = long) */
492 FALSE
, /* pc_relative */
494 complain_overflow_dont
,/* complain_on_overflow */
495 ppc64_elf_unhandled_reloc
, /* special_function */
496 "R_PPC64_GOT16_HA", /* name */
497 FALSE
, /* partial_inplace */
499 0xffff, /* dst_mask */
500 FALSE
), /* pcrel_offset */
502 /* This is used only by the dynamic linker. The symbol should exist
503 both in the object being run and in some shared library. The
504 dynamic linker copies the data addressed by the symbol from the
505 shared library into the object, because the object being
506 run has to have the data at some particular address. */
507 HOWTO (R_PPC64_COPY
, /* type */
509 0, /* this one is variable size */
511 FALSE
, /* pc_relative */
513 complain_overflow_dont
, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc
, /* special_function */
515 "R_PPC64_COPY", /* name */
516 FALSE
, /* partial_inplace */
519 FALSE
), /* pcrel_offset */
521 /* Like R_PPC64_ADDR64, but used when setting global offset table
523 HOWTO (R_PPC64_GLOB_DAT
, /* type */
525 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
527 FALSE
, /* pc_relative */
529 complain_overflow_dont
, /* complain_on_overflow */
530 ppc64_elf_unhandled_reloc
, /* special_function */
531 "R_PPC64_GLOB_DAT", /* name */
532 FALSE
, /* partial_inplace */
534 ONES (64), /* dst_mask */
535 FALSE
), /* pcrel_offset */
537 /* Created by the link editor. Marks a procedure linkage table
538 entry for a symbol. */
539 HOWTO (R_PPC64_JMP_SLOT
, /* type */
541 0, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE
, /* pc_relative */
545 complain_overflow_dont
, /* complain_on_overflow */
546 ppc64_elf_unhandled_reloc
, /* special_function */
547 "R_PPC64_JMP_SLOT", /* name */
548 FALSE
, /* partial_inplace */
551 FALSE
), /* pcrel_offset */
553 /* Used only by the dynamic linker. When the object is run, this
554 doubleword64 is set to the load address of the object, plus the
556 HOWTO (R_PPC64_RELATIVE
, /* type */
558 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
560 FALSE
, /* pc_relative */
562 complain_overflow_dont
, /* complain_on_overflow */
563 bfd_elf_generic_reloc
, /* special_function */
564 "R_PPC64_RELATIVE", /* name */
565 FALSE
, /* partial_inplace */
567 ONES (64), /* dst_mask */
568 FALSE
), /* pcrel_offset */
570 /* Like R_PPC64_ADDR32, but may be unaligned. */
571 HOWTO (R_PPC64_UADDR32
, /* type */
573 2, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE
, /* pc_relative */
577 complain_overflow_bitfield
, /* complain_on_overflow */
578 bfd_elf_generic_reloc
, /* special_function */
579 "R_PPC64_UADDR32", /* name */
580 FALSE
, /* partial_inplace */
582 0xffffffff, /* dst_mask */
583 FALSE
), /* pcrel_offset */
585 /* Like R_PPC64_ADDR16, but may be unaligned. */
586 HOWTO (R_PPC64_UADDR16
, /* type */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
590 FALSE
, /* pc_relative */
592 complain_overflow_bitfield
, /* complain_on_overflow */
593 bfd_elf_generic_reloc
, /* special_function */
594 "R_PPC64_UADDR16", /* name */
595 FALSE
, /* partial_inplace */
597 0xffff, /* dst_mask */
598 FALSE
), /* pcrel_offset */
600 /* 32-bit PC relative. */
601 HOWTO (R_PPC64_REL32
, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 TRUE
, /* pc_relative */
607 /* FIXME: Verify. Was complain_overflow_bitfield. */
608 complain_overflow_signed
, /* complain_on_overflow */
609 bfd_elf_generic_reloc
, /* special_function */
610 "R_PPC64_REL32", /* name */
611 FALSE
, /* partial_inplace */
613 0xffffffff, /* dst_mask */
614 TRUE
), /* pcrel_offset */
616 /* 32-bit relocation to the symbol's procedure linkage table. */
617 HOWTO (R_PPC64_PLT32
, /* type */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
621 FALSE
, /* pc_relative */
623 complain_overflow_bitfield
, /* complain_on_overflow */
624 ppc64_elf_unhandled_reloc
, /* special_function */
625 "R_PPC64_PLT32", /* name */
626 FALSE
, /* partial_inplace */
628 0xffffffff, /* dst_mask */
629 FALSE
), /* pcrel_offset */
631 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
632 FIXME: R_PPC64_PLTREL32 not supported. */
633 HOWTO (R_PPC64_PLTREL32
, /* type */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
637 TRUE
, /* pc_relative */
639 complain_overflow_signed
, /* complain_on_overflow */
640 bfd_elf_generic_reloc
, /* special_function */
641 "R_PPC64_PLTREL32", /* name */
642 FALSE
, /* partial_inplace */
644 0xffffffff, /* dst_mask */
645 TRUE
), /* pcrel_offset */
647 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
649 HOWTO (R_PPC64_PLT16_LO
, /* type */
651 1, /* size (0 = byte, 1 = short, 2 = long) */
653 FALSE
, /* pc_relative */
655 complain_overflow_dont
, /* complain_on_overflow */
656 ppc64_elf_unhandled_reloc
, /* special_function */
657 "R_PPC64_PLT16_LO", /* name */
658 FALSE
, /* partial_inplace */
660 0xffff, /* dst_mask */
661 FALSE
), /* pcrel_offset */
663 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
665 HOWTO (R_PPC64_PLT16_HI
, /* type */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
669 FALSE
, /* pc_relative */
671 complain_overflow_dont
, /* complain_on_overflow */
672 ppc64_elf_unhandled_reloc
, /* special_function */
673 "R_PPC64_PLT16_HI", /* name */
674 FALSE
, /* partial_inplace */
676 0xffff, /* dst_mask */
677 FALSE
), /* pcrel_offset */
679 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
681 HOWTO (R_PPC64_PLT16_HA
, /* type */
683 1, /* size (0 = byte, 1 = short, 2 = long) */
685 FALSE
, /* pc_relative */
687 complain_overflow_dont
, /* complain_on_overflow */
688 ppc64_elf_unhandled_reloc
, /* special_function */
689 "R_PPC64_PLT16_HA", /* name */
690 FALSE
, /* partial_inplace */
692 0xffff, /* dst_mask */
693 FALSE
), /* pcrel_offset */
695 /* 16-bit section relative relocation. */
696 HOWTO (R_PPC64_SECTOFF
, /* type */
698 1, /* size (0 = byte, 1 = short, 2 = long) */
700 FALSE
, /* pc_relative */
702 complain_overflow_bitfield
, /* complain_on_overflow */
703 ppc64_elf_sectoff_reloc
, /* special_function */
704 "R_PPC64_SECTOFF", /* name */
705 FALSE
, /* partial_inplace */
707 0xffff, /* dst_mask */
708 FALSE
), /* pcrel_offset */
710 /* Like R_PPC64_SECTOFF, but no overflow warning. */
711 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
715 FALSE
, /* pc_relative */
717 complain_overflow_dont
, /* complain_on_overflow */
718 ppc64_elf_sectoff_reloc
, /* special_function */
719 "R_PPC64_SECTOFF_LO", /* name */
720 FALSE
, /* partial_inplace */
722 0xffff, /* dst_mask */
723 FALSE
), /* pcrel_offset */
725 /* 16-bit upper half section relative relocation. */
726 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
728 1, /* size (0 = byte, 1 = short, 2 = long) */
730 FALSE
, /* pc_relative */
732 complain_overflow_dont
, /* complain_on_overflow */
733 ppc64_elf_sectoff_reloc
, /* special_function */
734 "R_PPC64_SECTOFF_HI", /* name */
735 FALSE
, /* partial_inplace */
737 0xffff, /* dst_mask */
738 FALSE
), /* pcrel_offset */
740 /* 16-bit upper half adjusted section relative relocation. */
741 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
743 1, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE
, /* pc_relative */
747 complain_overflow_dont
, /* complain_on_overflow */
748 ppc64_elf_sectoff_ha_reloc
, /* special_function */
749 "R_PPC64_SECTOFF_HA", /* name */
750 FALSE
, /* partial_inplace */
752 0xffff, /* dst_mask */
753 FALSE
), /* pcrel_offset */
755 /* Like R_PPC64_REL24 without touching the two least significant bits. */
756 HOWTO (R_PPC64_REL30
, /* type */
758 2, /* size (0 = byte, 1 = short, 2 = long) */
760 TRUE
, /* pc_relative */
762 complain_overflow_dont
, /* complain_on_overflow */
763 bfd_elf_generic_reloc
, /* special_function */
764 "R_PPC64_REL30", /* name */
765 FALSE
, /* partial_inplace */
767 0xfffffffc, /* dst_mask */
768 TRUE
), /* pcrel_offset */
770 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
772 /* A standard 64-bit relocation. */
773 HOWTO (R_PPC64_ADDR64
, /* type */
775 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
777 FALSE
, /* pc_relative */
779 complain_overflow_dont
, /* complain_on_overflow */
780 bfd_elf_generic_reloc
, /* special_function */
781 "R_PPC64_ADDR64", /* name */
782 FALSE
, /* partial_inplace */
784 ONES (64), /* dst_mask */
785 FALSE
), /* pcrel_offset */
787 /* The bits 32-47 of an address. */
788 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
790 1, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE
, /* pc_relative */
794 complain_overflow_dont
, /* complain_on_overflow */
795 bfd_elf_generic_reloc
, /* special_function */
796 "R_PPC64_ADDR16_HIGHER", /* name */
797 FALSE
, /* partial_inplace */
799 0xffff, /* dst_mask */
800 FALSE
), /* pcrel_offset */
802 /* The bits 32-47 of an address, plus 1 if the contents of the low
803 16 bits, treated as a signed number, is negative. */
804 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
806 1, /* size (0 = byte, 1 = short, 2 = long) */
808 FALSE
, /* pc_relative */
810 complain_overflow_dont
, /* complain_on_overflow */
811 ppc64_elf_ha_reloc
, /* special_function */
812 "R_PPC64_ADDR16_HIGHERA", /* name */
813 FALSE
, /* partial_inplace */
815 0xffff, /* dst_mask */
816 FALSE
), /* pcrel_offset */
818 /* The bits 48-63 of an address. */
819 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
821 1, /* size (0 = byte, 1 = short, 2 = long) */
823 FALSE
, /* pc_relative */
825 complain_overflow_dont
, /* complain_on_overflow */
826 bfd_elf_generic_reloc
, /* special_function */
827 "R_PPC64_ADDR16_HIGHEST", /* name */
828 FALSE
, /* partial_inplace */
830 0xffff, /* dst_mask */
831 FALSE
), /* pcrel_offset */
833 /* The bits 48-63 of an address, plus 1 if the contents of the low
834 16 bits, treated as a signed number, is negative. */
835 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE
, /* pc_relative */
841 complain_overflow_dont
, /* complain_on_overflow */
842 ppc64_elf_ha_reloc
, /* special_function */
843 "R_PPC64_ADDR16_HIGHESTA", /* name */
844 FALSE
, /* partial_inplace */
846 0xffff, /* dst_mask */
847 FALSE
), /* pcrel_offset */
849 /* Like ADDR64, but may be unaligned. */
850 HOWTO (R_PPC64_UADDR64
, /* type */
852 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 FALSE
, /* pc_relative */
856 complain_overflow_dont
, /* complain_on_overflow */
857 bfd_elf_generic_reloc
, /* special_function */
858 "R_PPC64_UADDR64", /* name */
859 FALSE
, /* partial_inplace */
861 ONES (64), /* dst_mask */
862 FALSE
), /* pcrel_offset */
864 /* 64-bit relative relocation. */
865 HOWTO (R_PPC64_REL64
, /* type */
867 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 TRUE
, /* pc_relative */
871 complain_overflow_dont
, /* complain_on_overflow */
872 bfd_elf_generic_reloc
, /* special_function */
873 "R_PPC64_REL64", /* name */
874 FALSE
, /* partial_inplace */
876 ONES (64), /* dst_mask */
877 TRUE
), /* pcrel_offset */
879 /* 64-bit relocation to the symbol's procedure linkage table. */
880 HOWTO (R_PPC64_PLT64
, /* type */
882 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
884 FALSE
, /* pc_relative */
886 complain_overflow_dont
, /* complain_on_overflow */
887 ppc64_elf_unhandled_reloc
, /* special_function */
888 "R_PPC64_PLT64", /* name */
889 FALSE
, /* partial_inplace */
891 ONES (64), /* dst_mask */
892 FALSE
), /* pcrel_offset */
894 /* 64-bit PC relative relocation to the symbol's procedure linkage
896 /* FIXME: R_PPC64_PLTREL64 not supported. */
897 HOWTO (R_PPC64_PLTREL64
, /* type */
899 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
901 TRUE
, /* pc_relative */
903 complain_overflow_dont
, /* complain_on_overflow */
904 ppc64_elf_unhandled_reloc
, /* special_function */
905 "R_PPC64_PLTREL64", /* name */
906 FALSE
, /* partial_inplace */
908 ONES (64), /* dst_mask */
909 TRUE
), /* pcrel_offset */
911 /* 16 bit TOC-relative relocation. */
913 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
914 HOWTO (R_PPC64_TOC16
, /* type */
916 1, /* size (0 = byte, 1 = short, 2 = long) */
918 FALSE
, /* pc_relative */
920 complain_overflow_signed
, /* complain_on_overflow */
921 ppc64_elf_toc_reloc
, /* special_function */
922 "R_PPC64_TOC16", /* name */
923 FALSE
, /* partial_inplace */
925 0xffff, /* dst_mask */
926 FALSE
), /* pcrel_offset */
928 /* 16 bit TOC-relative relocation without overflow. */
930 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
931 HOWTO (R_PPC64_TOC16_LO
, /* type */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
935 FALSE
, /* pc_relative */
937 complain_overflow_dont
, /* complain_on_overflow */
938 ppc64_elf_toc_reloc
, /* special_function */
939 "R_PPC64_TOC16_LO", /* name */
940 FALSE
, /* partial_inplace */
942 0xffff, /* dst_mask */
943 FALSE
), /* pcrel_offset */
945 /* 16 bit TOC-relative relocation, high 16 bits. */
947 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
948 HOWTO (R_PPC64_TOC16_HI
, /* type */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
952 FALSE
, /* pc_relative */
954 complain_overflow_dont
, /* complain_on_overflow */
955 ppc64_elf_toc_reloc
, /* special_function */
956 "R_PPC64_TOC16_HI", /* name */
957 FALSE
, /* partial_inplace */
959 0xffff, /* dst_mask */
960 FALSE
), /* pcrel_offset */
962 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
963 contents of the low 16 bits, treated as a signed number, is
966 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
967 HOWTO (R_PPC64_TOC16_HA
, /* type */
969 1, /* size (0 = byte, 1 = short, 2 = long) */
971 FALSE
, /* pc_relative */
973 complain_overflow_dont
, /* complain_on_overflow */
974 ppc64_elf_toc_ha_reloc
, /* special_function */
975 "R_PPC64_TOC16_HA", /* name */
976 FALSE
, /* partial_inplace */
978 0xffff, /* dst_mask */
979 FALSE
), /* pcrel_offset */
981 /* 64-bit relocation; insert value of TOC base (.TOC.). */
983 /* R_PPC64_TOC 51 doubleword64 .TOC. */
984 HOWTO (R_PPC64_TOC
, /* type */
986 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
988 FALSE
, /* pc_relative */
990 complain_overflow_bitfield
, /* complain_on_overflow */
991 ppc64_elf_toc64_reloc
, /* special_function */
992 "R_PPC64_TOC", /* name */
993 FALSE
, /* partial_inplace */
995 ONES (64), /* dst_mask */
996 FALSE
), /* pcrel_offset */
998 /* Like R_PPC64_GOT16, but also informs the link editor that the
999 value to relocate may (!) refer to a PLT entry which the link
1000 editor (a) may replace with the symbol value. If the link editor
1001 is unable to fully resolve the symbol, it may (b) create a PLT
1002 entry and store the address to the new PLT entry in the GOT.
1003 This permits lazy resolution of function symbols at run time.
1004 The link editor may also skip all of this and just (c) emit a
1005 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1006 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1007 HOWTO (R_PPC64_PLTGOT16
, /* type */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE
, /* pc_relative */
1013 complain_overflow_signed
, /* complain_on_overflow */
1014 ppc64_elf_unhandled_reloc
, /* special_function */
1015 "R_PPC64_PLTGOT16", /* name */
1016 FALSE
, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE
), /* pcrel_offset */
1021 /* Like R_PPC64_PLTGOT16, but without overflow. */
1022 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1023 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_dont
, /* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc
, /* special_function */
1031 "R_PPC64_PLTGOT16_LO", /* name */
1032 FALSE
, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1037 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1038 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1039 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1040 16, /* rightshift */
1041 1, /* size (0 = byte, 1 = short, 2 = long) */
1043 FALSE
, /* pc_relative */
1045 complain_overflow_dont
, /* complain_on_overflow */
1046 ppc64_elf_unhandled_reloc
, /* special_function */
1047 "R_PPC64_PLTGOT16_HI", /* name */
1048 FALSE
, /* partial_inplace */
1050 0xffff, /* dst_mask */
1051 FALSE
), /* pcrel_offset */
1053 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1054 1 if the contents of the low 16 bits, treated as a signed number,
1056 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1058 16, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_dont
,/* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc
, /* special_function */
1065 "R_PPC64_PLTGOT16_HA", /* name */
1066 FALSE
, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1072 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE
, /* pc_relative */
1078 complain_overflow_bitfield
, /* complain_on_overflow */
1079 bfd_elf_generic_reloc
, /* special_function */
1080 "R_PPC64_ADDR16_DS", /* name */
1081 FALSE
, /* partial_inplace */
1083 0xfffc, /* dst_mask */
1084 FALSE
), /* pcrel_offset */
1086 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1087 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE
, /* pc_relative */
1093 complain_overflow_dont
,/* complain_on_overflow */
1094 bfd_elf_generic_reloc
, /* special_function */
1095 "R_PPC64_ADDR16_LO_DS",/* name */
1096 FALSE
, /* partial_inplace */
1098 0xfffc, /* dst_mask */
1099 FALSE
), /* pcrel_offset */
1101 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1102 HOWTO (R_PPC64_GOT16_DS
, /* type */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE
, /* pc_relative */
1108 complain_overflow_signed
, /* complain_on_overflow */
1109 ppc64_elf_unhandled_reloc
, /* special_function */
1110 "R_PPC64_GOT16_DS", /* name */
1111 FALSE
, /* partial_inplace */
1113 0xfffc, /* dst_mask */
1114 FALSE
), /* pcrel_offset */
1116 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1117 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE
, /* pc_relative */
1123 complain_overflow_dont
, /* complain_on_overflow */
1124 ppc64_elf_unhandled_reloc
, /* special_function */
1125 "R_PPC64_GOT16_LO_DS", /* name */
1126 FALSE
, /* partial_inplace */
1128 0xfffc, /* dst_mask */
1129 FALSE
), /* pcrel_offset */
1131 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1132 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE
, /* pc_relative */
1138 complain_overflow_dont
, /* complain_on_overflow */
1139 ppc64_elf_unhandled_reloc
, /* special_function */
1140 "R_PPC64_PLT16_LO_DS", /* name */
1141 FALSE
, /* partial_inplace */
1143 0xfffc, /* dst_mask */
1144 FALSE
), /* pcrel_offset */
1146 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1147 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE
, /* pc_relative */
1153 complain_overflow_bitfield
, /* complain_on_overflow */
1154 ppc64_elf_sectoff_reloc
, /* special_function */
1155 "R_PPC64_SECTOFF_DS", /* name */
1156 FALSE
, /* partial_inplace */
1158 0xfffc, /* dst_mask */
1159 FALSE
), /* pcrel_offset */
1161 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1162 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 FALSE
, /* pc_relative */
1168 complain_overflow_dont
, /* complain_on_overflow */
1169 ppc64_elf_sectoff_reloc
, /* special_function */
1170 "R_PPC64_SECTOFF_LO_DS",/* name */
1171 FALSE
, /* partial_inplace */
1173 0xfffc, /* dst_mask */
1174 FALSE
), /* pcrel_offset */
1176 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1177 HOWTO (R_PPC64_TOC16_DS
, /* type */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE
, /* pc_relative */
1183 complain_overflow_signed
, /* complain_on_overflow */
1184 ppc64_elf_toc_reloc
, /* special_function */
1185 "R_PPC64_TOC16_DS", /* name */
1186 FALSE
, /* partial_inplace */
1188 0xfffc, /* dst_mask */
1189 FALSE
), /* pcrel_offset */
1191 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1192 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE
, /* pc_relative */
1198 complain_overflow_dont
, /* complain_on_overflow */
1199 ppc64_elf_toc_reloc
, /* special_function */
1200 "R_PPC64_TOC16_LO_DS", /* name */
1201 FALSE
, /* partial_inplace */
1203 0xfffc, /* dst_mask */
1204 FALSE
), /* pcrel_offset */
1206 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1207 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1208 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE
, /* pc_relative */
1214 complain_overflow_signed
, /* complain_on_overflow */
1215 ppc64_elf_unhandled_reloc
, /* special_function */
1216 "R_PPC64_PLTGOT16_DS", /* name */
1217 FALSE
, /* partial_inplace */
1219 0xfffc, /* dst_mask */
1220 FALSE
), /* pcrel_offset */
1222 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1223 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1224 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1228 FALSE
, /* pc_relative */
1230 complain_overflow_dont
, /* complain_on_overflow */
1231 ppc64_elf_unhandled_reloc
, /* special_function */
1232 "R_PPC64_PLTGOT16_LO_DS",/* name */
1233 FALSE
, /* partial_inplace */
1235 0xfffc, /* dst_mask */
1236 FALSE
), /* pcrel_offset */
1238 /* Marker relocs for TLS. */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 FALSE
, /* pc_relative */
1245 complain_overflow_dont
, /* complain_on_overflow */
1246 bfd_elf_generic_reloc
, /* special_function */
1247 "R_PPC64_TLS", /* name */
1248 FALSE
, /* partial_inplace */
1251 FALSE
), /* pcrel_offset */
1253 HOWTO (R_PPC64_TLSGD
,
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE
, /* pc_relative */
1259 complain_overflow_dont
, /* complain_on_overflow */
1260 bfd_elf_generic_reloc
, /* special_function */
1261 "R_PPC64_TLSGD", /* name */
1262 FALSE
, /* partial_inplace */
1265 FALSE
), /* pcrel_offset */
1267 HOWTO (R_PPC64_TLSLD
,
1269 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 FALSE
, /* pc_relative */
1273 complain_overflow_dont
, /* complain_on_overflow */
1274 bfd_elf_generic_reloc
, /* special_function */
1275 "R_PPC64_TLSLD", /* name */
1276 FALSE
, /* partial_inplace */
1279 FALSE
), /* pcrel_offset */
1281 /* Computes the load module index of the load module that contains the
1282 definition of its TLS sym. */
1283 HOWTO (R_PPC64_DTPMOD64
,
1285 4, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE
, /* pc_relative */
1289 complain_overflow_dont
, /* complain_on_overflow */
1290 ppc64_elf_unhandled_reloc
, /* special_function */
1291 "R_PPC64_DTPMOD64", /* name */
1292 FALSE
, /* partial_inplace */
1294 ONES (64), /* dst_mask */
1295 FALSE
), /* pcrel_offset */
1297 /* Computes a dtv-relative displacement, the difference between the value
1298 of sym+add and the base address of the thread-local storage block that
1299 contains the definition of sym, minus 0x8000. */
1300 HOWTO (R_PPC64_DTPREL64
,
1302 4, /* size (0 = byte, 1 = short, 2 = long) */
1304 FALSE
, /* pc_relative */
1306 complain_overflow_dont
, /* complain_on_overflow */
1307 ppc64_elf_unhandled_reloc
, /* special_function */
1308 "R_PPC64_DTPREL64", /* name */
1309 FALSE
, /* partial_inplace */
1311 ONES (64), /* dst_mask */
1312 FALSE
), /* pcrel_offset */
1314 /* A 16 bit dtprel reloc. */
1315 HOWTO (R_PPC64_DTPREL16
,
1317 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 FALSE
, /* pc_relative */
1321 complain_overflow_signed
, /* complain_on_overflow */
1322 ppc64_elf_unhandled_reloc
, /* special_function */
1323 "R_PPC64_DTPREL16", /* name */
1324 FALSE
, /* partial_inplace */
1326 0xffff, /* dst_mask */
1327 FALSE
), /* pcrel_offset */
1329 /* Like DTPREL16, but no overflow. */
1330 HOWTO (R_PPC64_DTPREL16_LO
,
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE
, /* pc_relative */
1336 complain_overflow_dont
, /* complain_on_overflow */
1337 ppc64_elf_unhandled_reloc
, /* special_function */
1338 "R_PPC64_DTPREL16_LO", /* name */
1339 FALSE
, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE
), /* pcrel_offset */
1344 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1345 HOWTO (R_PPC64_DTPREL16_HI
,
1346 16, /* rightshift */
1347 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 FALSE
, /* pc_relative */
1351 complain_overflow_dont
, /* complain_on_overflow */
1352 ppc64_elf_unhandled_reloc
, /* special_function */
1353 "R_PPC64_DTPREL16_HI", /* name */
1354 FALSE
, /* partial_inplace */
1356 0xffff, /* dst_mask */
1357 FALSE
), /* pcrel_offset */
1359 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1360 HOWTO (R_PPC64_DTPREL16_HA
,
1361 16, /* rightshift */
1362 1, /* size (0 = byte, 1 = short, 2 = long) */
1364 FALSE
, /* pc_relative */
1366 complain_overflow_dont
, /* complain_on_overflow */
1367 ppc64_elf_unhandled_reloc
, /* special_function */
1368 "R_PPC64_DTPREL16_HA", /* name */
1369 FALSE
, /* partial_inplace */
1371 0xffff, /* dst_mask */
1372 FALSE
), /* pcrel_offset */
1374 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1375 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1376 32, /* rightshift */
1377 1, /* size (0 = byte, 1 = short, 2 = long) */
1379 FALSE
, /* pc_relative */
1381 complain_overflow_dont
, /* complain_on_overflow */
1382 ppc64_elf_unhandled_reloc
, /* special_function */
1383 "R_PPC64_DTPREL16_HIGHER", /* name */
1384 FALSE
, /* partial_inplace */
1386 0xffff, /* dst_mask */
1387 FALSE
), /* pcrel_offset */
1389 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1390 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1391 32, /* rightshift */
1392 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 FALSE
, /* pc_relative */
1396 complain_overflow_dont
, /* complain_on_overflow */
1397 ppc64_elf_unhandled_reloc
, /* special_function */
1398 "R_PPC64_DTPREL16_HIGHERA", /* name */
1399 FALSE
, /* partial_inplace */
1401 0xffff, /* dst_mask */
1402 FALSE
), /* pcrel_offset */
1404 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1405 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1406 48, /* rightshift */
1407 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 FALSE
, /* pc_relative */
1411 complain_overflow_dont
, /* complain_on_overflow */
1412 ppc64_elf_unhandled_reloc
, /* special_function */
1413 "R_PPC64_DTPREL16_HIGHEST", /* name */
1414 FALSE
, /* partial_inplace */
1416 0xffff, /* dst_mask */
1417 FALSE
), /* pcrel_offset */
1419 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1420 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1421 48, /* rightshift */
1422 1, /* size (0 = byte, 1 = short, 2 = long) */
1424 FALSE
, /* pc_relative */
1426 complain_overflow_dont
, /* complain_on_overflow */
1427 ppc64_elf_unhandled_reloc
, /* special_function */
1428 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1429 FALSE
, /* partial_inplace */
1431 0xffff, /* dst_mask */
1432 FALSE
), /* pcrel_offset */
1434 /* Like DTPREL16, but for insns with a DS field. */
1435 HOWTO (R_PPC64_DTPREL16_DS
,
1437 1, /* size (0 = byte, 1 = short, 2 = long) */
1439 FALSE
, /* pc_relative */
1441 complain_overflow_signed
, /* complain_on_overflow */
1442 ppc64_elf_unhandled_reloc
, /* special_function */
1443 "R_PPC64_DTPREL16_DS", /* name */
1444 FALSE
, /* partial_inplace */
1446 0xfffc, /* dst_mask */
1447 FALSE
), /* pcrel_offset */
1449 /* Like DTPREL16_DS, but no overflow. */
1450 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1452 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 FALSE
, /* pc_relative */
1456 complain_overflow_dont
, /* complain_on_overflow */
1457 ppc64_elf_unhandled_reloc
, /* special_function */
1458 "R_PPC64_DTPREL16_LO_DS", /* name */
1459 FALSE
, /* partial_inplace */
1461 0xfffc, /* dst_mask */
1462 FALSE
), /* pcrel_offset */
1464 /* Computes a tp-relative displacement, the difference between the value of
1465 sym+add and the value of the thread pointer (r13). */
1466 HOWTO (R_PPC64_TPREL64
,
1468 4, /* size (0 = byte, 1 = short, 2 = long) */
1470 FALSE
, /* pc_relative */
1472 complain_overflow_dont
, /* complain_on_overflow */
1473 ppc64_elf_unhandled_reloc
, /* special_function */
1474 "R_PPC64_TPREL64", /* name */
1475 FALSE
, /* partial_inplace */
1477 ONES (64), /* dst_mask */
1478 FALSE
), /* pcrel_offset */
1480 /* A 16 bit tprel reloc. */
1481 HOWTO (R_PPC64_TPREL16
,
1483 1, /* size (0 = byte, 1 = short, 2 = long) */
1485 FALSE
, /* pc_relative */
1487 complain_overflow_signed
, /* complain_on_overflow */
1488 ppc64_elf_unhandled_reloc
, /* special_function */
1489 "R_PPC64_TPREL16", /* name */
1490 FALSE
, /* partial_inplace */
1492 0xffff, /* dst_mask */
1493 FALSE
), /* pcrel_offset */
1495 /* Like TPREL16, but no overflow. */
1496 HOWTO (R_PPC64_TPREL16_LO
,
1498 1, /* size (0 = byte, 1 = short, 2 = long) */
1500 FALSE
, /* pc_relative */
1502 complain_overflow_dont
, /* complain_on_overflow */
1503 ppc64_elf_unhandled_reloc
, /* special_function */
1504 "R_PPC64_TPREL16_LO", /* name */
1505 FALSE
, /* partial_inplace */
1507 0xffff, /* dst_mask */
1508 FALSE
), /* pcrel_offset */
1510 /* Like TPREL16_LO, but next higher group of 16 bits. */
1511 HOWTO (R_PPC64_TPREL16_HI
,
1512 16, /* rightshift */
1513 1, /* size (0 = byte, 1 = short, 2 = long) */
1515 FALSE
, /* pc_relative */
1517 complain_overflow_dont
, /* complain_on_overflow */
1518 ppc64_elf_unhandled_reloc
, /* special_function */
1519 "R_PPC64_TPREL16_HI", /* name */
1520 FALSE
, /* partial_inplace */
1522 0xffff, /* dst_mask */
1523 FALSE
), /* pcrel_offset */
1525 /* Like TPREL16_HI, but adjust for low 16 bits. */
1526 HOWTO (R_PPC64_TPREL16_HA
,
1527 16, /* rightshift */
1528 1, /* size (0 = byte, 1 = short, 2 = long) */
1530 FALSE
, /* pc_relative */
1532 complain_overflow_dont
, /* complain_on_overflow */
1533 ppc64_elf_unhandled_reloc
, /* special_function */
1534 "R_PPC64_TPREL16_HA", /* name */
1535 FALSE
, /* partial_inplace */
1537 0xffff, /* dst_mask */
1538 FALSE
), /* pcrel_offset */
1540 /* Like TPREL16_HI, but next higher group of 16 bits. */
1541 HOWTO (R_PPC64_TPREL16_HIGHER
,
1542 32, /* rightshift */
1543 1, /* size (0 = byte, 1 = short, 2 = long) */
1545 FALSE
, /* pc_relative */
1547 complain_overflow_dont
, /* complain_on_overflow */
1548 ppc64_elf_unhandled_reloc
, /* special_function */
1549 "R_PPC64_TPREL16_HIGHER", /* name */
1550 FALSE
, /* partial_inplace */
1552 0xffff, /* dst_mask */
1553 FALSE
), /* pcrel_offset */
1555 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1556 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1557 32, /* rightshift */
1558 1, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE
, /* pc_relative */
1562 complain_overflow_dont
, /* complain_on_overflow */
1563 ppc64_elf_unhandled_reloc
, /* special_function */
1564 "R_PPC64_TPREL16_HIGHERA", /* name */
1565 FALSE
, /* partial_inplace */
1567 0xffff, /* dst_mask */
1568 FALSE
), /* pcrel_offset */
1570 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1571 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1572 48, /* rightshift */
1573 1, /* size (0 = byte, 1 = short, 2 = long) */
1575 FALSE
, /* pc_relative */
1577 complain_overflow_dont
, /* complain_on_overflow */
1578 ppc64_elf_unhandled_reloc
, /* special_function */
1579 "R_PPC64_TPREL16_HIGHEST", /* name */
1580 FALSE
, /* partial_inplace */
1582 0xffff, /* dst_mask */
1583 FALSE
), /* pcrel_offset */
1585 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1586 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1587 48, /* rightshift */
1588 1, /* size (0 = byte, 1 = short, 2 = long) */
1590 FALSE
, /* pc_relative */
1592 complain_overflow_dont
, /* complain_on_overflow */
1593 ppc64_elf_unhandled_reloc
, /* special_function */
1594 "R_PPC64_TPREL16_HIGHESTA", /* name */
1595 FALSE
, /* partial_inplace */
1597 0xffff, /* dst_mask */
1598 FALSE
), /* pcrel_offset */
1600 /* Like TPREL16, but for insns with a DS field. */
1601 HOWTO (R_PPC64_TPREL16_DS
,
1603 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 FALSE
, /* pc_relative */
1607 complain_overflow_signed
, /* complain_on_overflow */
1608 ppc64_elf_unhandled_reloc
, /* special_function */
1609 "R_PPC64_TPREL16_DS", /* name */
1610 FALSE
, /* partial_inplace */
1612 0xfffc, /* dst_mask */
1613 FALSE
), /* pcrel_offset */
1615 /* Like TPREL16_DS, but no overflow. */
1616 HOWTO (R_PPC64_TPREL16_LO_DS
,
1618 1, /* size (0 = byte, 1 = short, 2 = long) */
1620 FALSE
, /* pc_relative */
1622 complain_overflow_dont
, /* complain_on_overflow */
1623 ppc64_elf_unhandled_reloc
, /* special_function */
1624 "R_PPC64_TPREL16_LO_DS", /* name */
1625 FALSE
, /* partial_inplace */
1627 0xfffc, /* dst_mask */
1628 FALSE
), /* pcrel_offset */
1630 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1631 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1632 to the first entry relative to the TOC base (r2). */
1633 HOWTO (R_PPC64_GOT_TLSGD16
,
1635 1, /* size (0 = byte, 1 = short, 2 = long) */
1637 FALSE
, /* pc_relative */
1639 complain_overflow_signed
, /* complain_on_overflow */
1640 ppc64_elf_unhandled_reloc
, /* special_function */
1641 "R_PPC64_GOT_TLSGD16", /* name */
1642 FALSE
, /* partial_inplace */
1644 0xffff, /* dst_mask */
1645 FALSE
), /* pcrel_offset */
1647 /* Like GOT_TLSGD16, but no overflow. */
1648 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1650 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 FALSE
, /* pc_relative */
1654 complain_overflow_dont
, /* complain_on_overflow */
1655 ppc64_elf_unhandled_reloc
, /* special_function */
1656 "R_PPC64_GOT_TLSGD16_LO", /* name */
1657 FALSE
, /* partial_inplace */
1659 0xffff, /* dst_mask */
1660 FALSE
), /* pcrel_offset */
1662 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1663 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1664 16, /* rightshift */
1665 1, /* size (0 = byte, 1 = short, 2 = long) */
1667 FALSE
, /* pc_relative */
1669 complain_overflow_dont
, /* complain_on_overflow */
1670 ppc64_elf_unhandled_reloc
, /* special_function */
1671 "R_PPC64_GOT_TLSGD16_HI", /* name */
1672 FALSE
, /* partial_inplace */
1674 0xffff, /* dst_mask */
1675 FALSE
), /* pcrel_offset */
1677 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1678 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1679 16, /* rightshift */
1680 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 FALSE
, /* pc_relative */
1684 complain_overflow_dont
, /* complain_on_overflow */
1685 ppc64_elf_unhandled_reloc
, /* special_function */
1686 "R_PPC64_GOT_TLSGD16_HA", /* name */
1687 FALSE
, /* partial_inplace */
1689 0xffff, /* dst_mask */
1690 FALSE
), /* pcrel_offset */
1692 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1693 with values (sym+add)@dtpmod and zero, and computes the offset to the
1694 first entry relative to the TOC base (r2). */
1695 HOWTO (R_PPC64_GOT_TLSLD16
,
1697 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 FALSE
, /* pc_relative */
1701 complain_overflow_signed
, /* complain_on_overflow */
1702 ppc64_elf_unhandled_reloc
, /* special_function */
1703 "R_PPC64_GOT_TLSLD16", /* name */
1704 FALSE
, /* partial_inplace */
1706 0xffff, /* dst_mask */
1707 FALSE
), /* pcrel_offset */
1709 /* Like GOT_TLSLD16, but no overflow. */
1710 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1712 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 FALSE
, /* pc_relative */
1716 complain_overflow_dont
, /* complain_on_overflow */
1717 ppc64_elf_unhandled_reloc
, /* special_function */
1718 "R_PPC64_GOT_TLSLD16_LO", /* name */
1719 FALSE
, /* partial_inplace */
1721 0xffff, /* dst_mask */
1722 FALSE
), /* pcrel_offset */
1724 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1725 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1726 16, /* rightshift */
1727 1, /* size (0 = byte, 1 = short, 2 = long) */
1729 FALSE
, /* pc_relative */
1731 complain_overflow_dont
, /* complain_on_overflow */
1732 ppc64_elf_unhandled_reloc
, /* special_function */
1733 "R_PPC64_GOT_TLSLD16_HI", /* name */
1734 FALSE
, /* partial_inplace */
1736 0xffff, /* dst_mask */
1737 FALSE
), /* pcrel_offset */
1739 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1740 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1744 FALSE
, /* pc_relative */
1746 complain_overflow_dont
, /* complain_on_overflow */
1747 ppc64_elf_unhandled_reloc
, /* special_function */
1748 "R_PPC64_GOT_TLSLD16_HA", /* name */
1749 FALSE
, /* partial_inplace */
1751 0xffff, /* dst_mask */
1752 FALSE
), /* pcrel_offset */
1754 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1755 the offset to the entry relative to the TOC base (r2). */
1756 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1758 1, /* size (0 = byte, 1 = short, 2 = long) */
1760 FALSE
, /* pc_relative */
1762 complain_overflow_signed
, /* complain_on_overflow */
1763 ppc64_elf_unhandled_reloc
, /* special_function */
1764 "R_PPC64_GOT_DTPREL16_DS", /* name */
1765 FALSE
, /* partial_inplace */
1767 0xfffc, /* dst_mask */
1768 FALSE
), /* pcrel_offset */
1770 /* Like GOT_DTPREL16_DS, but no overflow. */
1771 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1773 1, /* size (0 = byte, 1 = short, 2 = long) */
1775 FALSE
, /* pc_relative */
1777 complain_overflow_dont
, /* complain_on_overflow */
1778 ppc64_elf_unhandled_reloc
, /* special_function */
1779 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1780 FALSE
, /* partial_inplace */
1782 0xfffc, /* dst_mask */
1783 FALSE
), /* pcrel_offset */
1785 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1786 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1787 16, /* rightshift */
1788 1, /* size (0 = byte, 1 = short, 2 = long) */
1790 FALSE
, /* pc_relative */
1792 complain_overflow_dont
, /* complain_on_overflow */
1793 ppc64_elf_unhandled_reloc
, /* special_function */
1794 "R_PPC64_GOT_DTPREL16_HI", /* name */
1795 FALSE
, /* partial_inplace */
1797 0xffff, /* dst_mask */
1798 FALSE
), /* pcrel_offset */
1800 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1801 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1802 16, /* rightshift */
1803 1, /* size (0 = byte, 1 = short, 2 = long) */
1805 FALSE
, /* pc_relative */
1807 complain_overflow_dont
, /* complain_on_overflow */
1808 ppc64_elf_unhandled_reloc
, /* special_function */
1809 "R_PPC64_GOT_DTPREL16_HA", /* name */
1810 FALSE
, /* partial_inplace */
1812 0xffff, /* dst_mask */
1813 FALSE
), /* pcrel_offset */
1815 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1816 offset to the entry relative to the TOC base (r2). */
1817 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1819 1, /* size (0 = byte, 1 = short, 2 = long) */
1821 FALSE
, /* pc_relative */
1823 complain_overflow_signed
, /* complain_on_overflow */
1824 ppc64_elf_unhandled_reloc
, /* special_function */
1825 "R_PPC64_GOT_TPREL16_DS", /* name */
1826 FALSE
, /* partial_inplace */
1828 0xfffc, /* dst_mask */
1829 FALSE
), /* pcrel_offset */
1831 /* Like GOT_TPREL16_DS, but no overflow. */
1832 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1834 1, /* size (0 = byte, 1 = short, 2 = long) */
1836 FALSE
, /* pc_relative */
1838 complain_overflow_dont
, /* complain_on_overflow */
1839 ppc64_elf_unhandled_reloc
, /* special_function */
1840 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1841 FALSE
, /* partial_inplace */
1843 0xfffc, /* dst_mask */
1844 FALSE
), /* pcrel_offset */
1846 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1847 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1848 16, /* rightshift */
1849 1, /* size (0 = byte, 1 = short, 2 = long) */
1851 FALSE
, /* pc_relative */
1853 complain_overflow_dont
, /* complain_on_overflow */
1854 ppc64_elf_unhandled_reloc
, /* special_function */
1855 "R_PPC64_GOT_TPREL16_HI", /* name */
1856 FALSE
, /* partial_inplace */
1858 0xffff, /* dst_mask */
1859 FALSE
), /* pcrel_offset */
1861 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1862 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1863 16, /* rightshift */
1864 1, /* size (0 = byte, 1 = short, 2 = long) */
1866 FALSE
, /* pc_relative */
1868 complain_overflow_dont
, /* complain_on_overflow */
1869 ppc64_elf_unhandled_reloc
, /* special_function */
1870 "R_PPC64_GOT_TPREL16_HA", /* name */
1871 FALSE
, /* partial_inplace */
1873 0xffff, /* dst_mask */
1874 FALSE
), /* pcrel_offset */
1876 /* GNU extension to record C++ vtable hierarchy. */
1877 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1879 0, /* size (0 = byte, 1 = short, 2 = long) */
1881 FALSE
, /* pc_relative */
1883 complain_overflow_dont
, /* complain_on_overflow */
1884 NULL
, /* special_function */
1885 "R_PPC64_GNU_VTINHERIT", /* name */
1886 FALSE
, /* partial_inplace */
1889 FALSE
), /* pcrel_offset */
1891 /* GNU extension to record C++ vtable member usage. */
1892 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1894 0, /* size (0 = byte, 1 = short, 2 = long) */
1896 FALSE
, /* pc_relative */
1898 complain_overflow_dont
, /* complain_on_overflow */
1899 NULL
, /* special_function */
1900 "R_PPC64_GNU_VTENTRY", /* name */
1901 FALSE
, /* partial_inplace */
1904 FALSE
), /* pcrel_offset */
1908 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1912 ppc_howto_init (void)
1914 unsigned int i
, type
;
1917 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1920 type
= ppc64_elf_howto_raw
[i
].type
;
1921 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1922 / sizeof (ppc64_elf_howto_table
[0])));
1923 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1927 static reloc_howto_type
*
1928 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1929 bfd_reloc_code_real_type code
)
1931 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1933 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1934 /* Initialize howto table if needed. */
1942 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1944 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1946 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1948 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1950 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1952 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1954 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1956 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1958 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1960 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1962 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1964 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1966 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1968 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1970 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1972 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1974 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1976 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1978 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1980 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1982 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1984 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1986 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1988 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1990 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1992 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1994 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1996 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1998 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2000 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2002 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2004 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2006 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2008 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2010 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2012 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2014 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2016 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2018 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2020 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2022 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2024 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2026 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2028 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2030 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2032 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2034 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2036 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2038 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2040 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2042 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2044 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2046 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2048 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2050 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2052 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2054 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2056 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2058 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2060 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2062 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2064 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2066 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2068 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2070 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2072 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2074 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2076 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2078 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2080 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2082 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2084 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2086 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2088 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2090 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2092 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2094 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2096 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2098 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2100 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2102 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2104 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2106 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2108 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2110 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2112 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2114 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2116 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2118 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2120 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2122 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2124 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2126 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2128 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2130 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2132 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2134 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2136 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2138 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2140 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2142 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2144 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2146 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2150 return ppc64_elf_howto_table
[r
];
2153 static reloc_howto_type
*
2154 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2160 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2162 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2163 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2164 return &ppc64_elf_howto_raw
[i
];
2169 /* Set the howto pointer for a PowerPC ELF reloc. */
2172 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2173 Elf_Internal_Rela
*dst
)
2177 /* Initialize howto table if needed. */
2178 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2181 type
= ELF64_R_TYPE (dst
->r_info
);
2182 if (type
>= (sizeof (ppc64_elf_howto_table
)
2183 / sizeof (ppc64_elf_howto_table
[0])))
2185 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2187 type
= R_PPC64_NONE
;
2189 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2192 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2194 static bfd_reloc_status_type
2195 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2196 void *data
, asection
*input_section
,
2197 bfd
*output_bfd
, char **error_message
)
2199 /* If this is a relocatable link (output_bfd test tells us), just
2200 call the generic function. Any adjustment will be done at final
2202 if (output_bfd
!= NULL
)
2203 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2204 input_section
, output_bfd
, error_message
);
2206 /* Adjust the addend for sign extension of the low 16 bits.
2207 We won't actually be using the low 16 bits, so trashing them
2209 reloc_entry
->addend
+= 0x8000;
2210 return bfd_reloc_continue
;
2213 static bfd_reloc_status_type
2214 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2215 void *data
, asection
*input_section
,
2216 bfd
*output_bfd
, char **error_message
)
2218 if (output_bfd
!= NULL
)
2219 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2220 input_section
, output_bfd
, error_message
);
2222 if (strcmp (symbol
->section
->name
, ".opd") == 0
2223 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2225 bfd_vma dest
= opd_entry_value (symbol
->section
,
2226 symbol
->value
+ reloc_entry
->addend
,
2228 if (dest
!= (bfd_vma
) -1)
2229 reloc_entry
->addend
= dest
- (symbol
->value
2230 + symbol
->section
->output_section
->vma
2231 + symbol
->section
->output_offset
);
2233 return bfd_reloc_continue
;
2236 static bfd_reloc_status_type
2237 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2238 void *data
, asection
*input_section
,
2239 bfd
*output_bfd
, char **error_message
)
2242 enum elf_ppc64_reloc_type r_type
;
2243 bfd_size_type octets
;
2244 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2245 bfd_boolean is_power4
= FALSE
;
2247 /* If this is a relocatable link (output_bfd test tells us), just
2248 call the generic function. Any adjustment will be done at final
2250 if (output_bfd
!= NULL
)
2251 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2252 input_section
, output_bfd
, error_message
);
2254 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2255 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2256 insn
&= ~(0x01 << 21);
2257 r_type
= reloc_entry
->howto
->type
;
2258 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2259 || r_type
== R_PPC64_REL14_BRTAKEN
)
2260 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2264 /* Set 'a' bit. This is 0b00010 in BO field for branch
2265 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2266 for branch on CTR insns (BO == 1a00t or 1a01t). */
2267 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2269 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2279 if (!bfd_is_com_section (symbol
->section
))
2280 target
= symbol
->value
;
2281 target
+= symbol
->section
->output_section
->vma
;
2282 target
+= symbol
->section
->output_offset
;
2283 target
+= reloc_entry
->addend
;
2285 from
= (reloc_entry
->address
2286 + input_section
->output_offset
2287 + input_section
->output_section
->vma
);
2289 /* Invert 'y' bit if not the default. */
2290 if ((bfd_signed_vma
) (target
- from
) < 0)
2293 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2295 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2296 input_section
, output_bfd
, error_message
);
2299 static bfd_reloc_status_type
2300 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2301 void *data
, asection
*input_section
,
2302 bfd
*output_bfd
, char **error_message
)
2304 /* If this is a relocatable link (output_bfd test tells us), just
2305 call the generic function. Any adjustment will be done at final
2307 if (output_bfd
!= NULL
)
2308 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2309 input_section
, output_bfd
, error_message
);
2311 /* Subtract the symbol section base address. */
2312 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2313 return bfd_reloc_continue
;
2316 static bfd_reloc_status_type
2317 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2318 void *data
, asection
*input_section
,
2319 bfd
*output_bfd
, char **error_message
)
2321 /* If this is a relocatable link (output_bfd test tells us), just
2322 call the generic function. Any adjustment will be done at final
2324 if (output_bfd
!= NULL
)
2325 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2326 input_section
, output_bfd
, error_message
);
2328 /* Subtract the symbol section base address. */
2329 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2331 /* Adjust the addend for sign extension of the low 16 bits. */
2332 reloc_entry
->addend
+= 0x8000;
2333 return bfd_reloc_continue
;
2336 static bfd_reloc_status_type
2337 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2338 void *data
, asection
*input_section
,
2339 bfd
*output_bfd
, char **error_message
)
2343 /* If this is a relocatable link (output_bfd test tells us), just
2344 call the generic function. Any adjustment will be done at final
2346 if (output_bfd
!= NULL
)
2347 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2348 input_section
, output_bfd
, error_message
);
2350 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2352 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2354 /* Subtract the TOC base address. */
2355 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2356 return bfd_reloc_continue
;
2359 static bfd_reloc_status_type
2360 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2361 void *data
, asection
*input_section
,
2362 bfd
*output_bfd
, char **error_message
)
2366 /* If this is a relocatable link (output_bfd test tells us), just
2367 call the generic function. Any adjustment will be done at final
2369 if (output_bfd
!= NULL
)
2370 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2371 input_section
, output_bfd
, error_message
);
2373 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2375 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2377 /* Subtract the TOC base address. */
2378 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2380 /* Adjust the addend for sign extension of the low 16 bits. */
2381 reloc_entry
->addend
+= 0x8000;
2382 return bfd_reloc_continue
;
2385 static bfd_reloc_status_type
2386 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2387 void *data
, asection
*input_section
,
2388 bfd
*output_bfd
, char **error_message
)
2391 bfd_size_type octets
;
2393 /* If this is a relocatable link (output_bfd test tells us), just
2394 call the generic function. Any adjustment will be done at final
2396 if (output_bfd
!= NULL
)
2397 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2398 input_section
, output_bfd
, error_message
);
2400 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2402 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2404 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2405 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2406 return bfd_reloc_ok
;
2409 static bfd_reloc_status_type
2410 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2411 void *data
, asection
*input_section
,
2412 bfd
*output_bfd
, char **error_message
)
2414 /* If this is a relocatable link (output_bfd test tells us), just
2415 call the generic function. Any adjustment will be done at final
2417 if (output_bfd
!= NULL
)
2418 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2419 input_section
, output_bfd
, error_message
);
2421 if (error_message
!= NULL
)
2423 static char buf
[60];
2424 sprintf (buf
, "generic linker can't handle %s",
2425 reloc_entry
->howto
->name
);
2426 *error_message
= buf
;
2428 return bfd_reloc_dangerous
;
2431 struct ppc64_elf_obj_tdata
2433 struct elf_obj_tdata elf
;
2435 /* Shortcuts to dynamic linker sections. */
2439 /* Used during garbage collection. We attach global symbols defined
2440 on removed .opd entries to this section so that the sym is removed. */
2441 asection
*deleted_section
;
2443 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2444 sections means we potentially need one of these for each input bfd. */
2446 bfd_signed_vma refcount
;
2450 /* A copy of relocs before they are modified for --emit-relocs. */
2451 Elf_Internal_Rela
*opd_relocs
;
2454 #define ppc64_elf_tdata(bfd) \
2455 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2457 #define ppc64_tlsld_got(bfd) \
2458 (&ppc64_elf_tdata (bfd)->tlsld_got)
2460 #define is_ppc64_elf(bfd) \
2461 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2462 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2464 /* Override the generic function because we store some extras. */
2467 ppc64_elf_mkobject (bfd
*abfd
)
2469 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2473 /* Fix bad default arch selected for a 64 bit input bfd when the
2474 default is 32 bit. */
2477 ppc64_elf_object_p (bfd
*abfd
)
2479 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2481 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2483 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2485 /* Relies on arch after 32 bit default being 64 bit default. */
2486 abfd
->arch_info
= abfd
->arch_info
->next
;
2487 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2493 /* Support for core dump NOTE sections. */
2496 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2498 size_t offset
, size
;
2500 if (note
->descsz
!= 504)
2504 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2507 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2513 /* Make a ".reg/999" section. */
2514 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2515 size
, note
->descpos
+ offset
);
2519 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2521 if (note
->descsz
!= 136)
2524 elf_tdata (abfd
)->core_program
2525 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2526 elf_tdata (abfd
)->core_command
2527 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2533 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2546 va_start (ap
, note_type
);
2547 memset (data
, 0, 40);
2548 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2549 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2551 return elfcore_write_note (abfd
, buf
, bufsiz
,
2552 "CORE", note_type
, data
, sizeof (data
));
2563 va_start (ap
, note_type
);
2564 memset (data
, 0, 112);
2565 pid
= va_arg (ap
, long);
2566 bfd_put_32 (abfd
, pid
, data
+ 32);
2567 cursig
= va_arg (ap
, int);
2568 bfd_put_16 (abfd
, cursig
, data
+ 12);
2569 greg
= va_arg (ap
, const void *);
2570 memcpy (data
+ 112, greg
, 384);
2571 memset (data
+ 496, 0, 8);
2573 return elfcore_write_note (abfd
, buf
, bufsiz
,
2574 "CORE", note_type
, data
, sizeof (data
));
2579 /* Merge backend specific data from an object file to the output
2580 object file when linking. */
2583 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2585 /* Check if we have the same endianess. */
2586 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2587 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2588 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2592 if (bfd_big_endian (ibfd
))
2593 msg
= _("%B: compiled for a big endian system "
2594 "and target is little endian");
2596 msg
= _("%B: compiled for a little endian system "
2597 "and target is big endian");
2599 (*_bfd_error_handler
) (msg
, ibfd
);
2601 bfd_set_error (bfd_error_wrong_format
);
2608 /* Add extra PPC sections. */
2610 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2612 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2613 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2614 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2615 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2616 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2617 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2618 { NULL
, 0, 0, 0, 0 }
2621 enum _ppc64_sec_type
{
2627 struct _ppc64_elf_section_data
2629 struct bfd_elf_section_data elf
;
2633 /* An array with one entry for each opd function descriptor. */
2634 struct _opd_sec_data
2636 /* Points to the function code section for local opd entries. */
2637 asection
**func_sec
;
2639 /* After editing .opd, adjust references to opd local syms. */
2643 /* An array for toc sections, indexed by offset/8. */
2644 struct _toc_sec_data
2646 /* Specifies the relocation symbol index used at a given toc offset. */
2649 /* And the relocation addend. */
2654 enum _ppc64_sec_type sec_type
:2;
2656 /* Flag set when small branches are detected. Used to
2657 select suitable defaults for the stub group size. */
2658 unsigned int has_14bit_branch
:1;
2661 #define ppc64_elf_section_data(sec) \
2662 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2665 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2667 if (!sec
->used_by_bfd
)
2669 struct _ppc64_elf_section_data
*sdata
;
2670 bfd_size_type amt
= sizeof (*sdata
);
2672 sdata
= bfd_zalloc (abfd
, amt
);
2675 sec
->used_by_bfd
= sdata
;
2678 return _bfd_elf_new_section_hook (abfd
, sec
);
2681 static struct _opd_sec_data
*
2682 get_opd_info (asection
* sec
)
2685 && ppc64_elf_section_data (sec
) != NULL
2686 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2687 return &ppc64_elf_section_data (sec
)->u
.opd
;
2691 /* Parameters for the qsort hook. */
2692 static asection
*synthetic_opd
;
2693 static bfd_boolean synthetic_relocatable
;
2695 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2698 compare_symbols (const void *ap
, const void *bp
)
2700 const asymbol
*a
= * (const asymbol
**) ap
;
2701 const asymbol
*b
= * (const asymbol
**) bp
;
2703 /* Section symbols first. */
2704 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2706 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2709 /* then .opd symbols. */
2710 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2712 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2715 /* then other code symbols. */
2716 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2717 == (SEC_CODE
| SEC_ALLOC
)
2718 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2719 != (SEC_CODE
| SEC_ALLOC
))
2722 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2723 != (SEC_CODE
| SEC_ALLOC
)
2724 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2725 == (SEC_CODE
| SEC_ALLOC
))
2728 if (synthetic_relocatable
)
2730 if (a
->section
->id
< b
->section
->id
)
2733 if (a
->section
->id
> b
->section
->id
)
2737 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2740 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2743 /* For syms with the same value, prefer strong dynamic global function
2744 syms over other syms. */
2745 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2748 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2751 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2754 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2757 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2760 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2763 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2766 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2772 /* Search SYMS for a symbol of the given VALUE. */
2775 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2783 mid
= (lo
+ hi
) >> 1;
2784 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2786 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2796 mid
= (lo
+ hi
) >> 1;
2797 if (syms
[mid
]->section
->id
< id
)
2799 else if (syms
[mid
]->section
->id
> id
)
2801 else if (syms
[mid
]->value
< value
)
2803 else if (syms
[mid
]->value
> value
)
2813 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2815 bfd_vma vma
= *(bfd_vma
*) ptr
;
2816 return ((section
->flags
& SEC_ALLOC
) != 0
2817 && section
->vma
<= vma
2818 && vma
< section
->vma
+ section
->size
);
2821 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2822 entry syms. Also generate @plt symbols for the glink branch table. */
2825 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2826 long static_count
, asymbol
**static_syms
,
2827 long dyn_count
, asymbol
**dyn_syms
,
2834 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2836 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2841 opd
= bfd_get_section_by_name (abfd
, ".opd");
2845 symcount
= static_count
;
2847 symcount
+= dyn_count
;
2851 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2855 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2857 /* Use both symbol tables. */
2858 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2859 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2861 else if (!relocatable
&& static_count
== 0)
2862 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2864 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2866 synthetic_opd
= opd
;
2867 synthetic_relocatable
= relocatable
;
2868 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2870 if (!relocatable
&& symcount
> 1)
2873 /* Trim duplicate syms, since we may have merged the normal and
2874 dynamic symbols. Actually, we only care about syms that have
2875 different values, so trim any with the same value. */
2876 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2877 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2878 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2879 syms
[j
++] = syms
[i
];
2884 if (syms
[i
]->section
== opd
)
2888 for (; i
< symcount
; ++i
)
2889 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2890 != (SEC_CODE
| SEC_ALLOC
))
2891 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2895 for (; i
< symcount
; ++i
)
2896 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2900 for (; i
< symcount
; ++i
)
2901 if (syms
[i
]->section
!= opd
)
2905 for (; i
< symcount
; ++i
)
2906 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2907 != (SEC_CODE
| SEC_ALLOC
))
2915 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2920 if (opdsymend
== secsymend
)
2923 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2924 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2928 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2935 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2939 while (r
< opd
->relocation
+ relcount
2940 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2943 if (r
== opd
->relocation
+ relcount
)
2946 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2949 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2952 sym
= *r
->sym_ptr_ptr
;
2953 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2954 sym
->section
->id
, sym
->value
+ r
->addend
))
2957 size
+= sizeof (asymbol
);
2958 size
+= strlen (syms
[i
]->name
) + 2;
2962 s
= *ret
= bfd_malloc (size
);
2969 names
= (char *) (s
+ count
);
2971 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2975 while (r
< opd
->relocation
+ relcount
2976 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2979 if (r
== opd
->relocation
+ relcount
)
2982 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2985 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2988 sym
= *r
->sym_ptr_ptr
;
2989 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2990 sym
->section
->id
, sym
->value
+ r
->addend
))
2995 s
->flags
|= BSF_SYNTHETIC
;
2996 s
->section
= sym
->section
;
2997 s
->value
= sym
->value
+ r
->addend
;
3000 len
= strlen (syms
[i
]->name
);
3001 memcpy (names
, syms
[i
]->name
, len
+ 1);
3003 /* Have udata.p point back to the original symbol this
3004 synthetic symbol was derived from. */
3005 s
->udata
.p
= syms
[i
];
3012 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3016 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3017 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3020 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3024 free_contents_and_exit
:
3032 for (i
= secsymend
; i
< opdsymend
; ++i
)
3036 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3037 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3040 size
+= sizeof (asymbol
);
3041 size
+= strlen (syms
[i
]->name
) + 2;
3045 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3047 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3049 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3051 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3053 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3054 goto free_contents_and_exit
;
3056 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3057 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3060 extdynend
= extdyn
+ dynamic
->size
;
3061 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3063 Elf_Internal_Dyn dyn
;
3064 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3066 if (dyn
.d_tag
== DT_NULL
)
3069 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3071 /* The first glink stub starts at offset 32; see comment in
3072 ppc64_elf_finish_dynamic_sections. */
3073 glink_vma
= dyn
.d_un
.d_val
+ 32;
3074 /* The .glink section usually does not survive the final
3075 link; search for the section (usually .text) where the
3076 glink stubs now reside. */
3077 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3088 /* Determine __glink trampoline by reading the relative branch
3089 from the first glink stub. */
3091 if (bfd_get_section_contents (abfd
, glink
, buf
,
3092 glink_vma
+ 4 - glink
->vma
, 4))
3094 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3096 if ((insn
& ~0x3fffffc) == 0)
3097 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3101 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3103 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3106 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3107 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3108 goto free_contents_and_exit
;
3110 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3111 size
+= plt_count
* sizeof (asymbol
);
3113 p
= relplt
->relocation
;
3114 for (i
= 0; i
< plt_count
; i
++, p
++)
3115 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3119 s
= *ret
= bfd_malloc (size
);
3121 goto free_contents_and_exit
;
3123 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3125 for (i
= secsymend
; i
< opdsymend
; ++i
)
3129 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3130 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3134 asection
*sec
= abfd
->sections
;
3141 long mid
= (lo
+ hi
) >> 1;
3142 if (syms
[mid
]->section
->vma
< ent
)
3144 else if (syms
[mid
]->section
->vma
> ent
)
3148 sec
= syms
[mid
]->section
;
3153 if (lo
>= hi
&& lo
> codesecsym
)
3154 sec
= syms
[lo
- 1]->section
;
3156 for (; sec
!= NULL
; sec
= sec
->next
)
3160 if ((sec
->flags
& SEC_ALLOC
) == 0
3161 || (sec
->flags
& SEC_LOAD
) == 0)
3163 if ((sec
->flags
& SEC_CODE
) != 0)
3166 s
->flags
|= BSF_SYNTHETIC
;
3167 s
->value
= ent
- s
->section
->vma
;
3170 len
= strlen (syms
[i
]->name
);
3171 memcpy (names
, syms
[i
]->name
, len
+ 1);
3173 /* Have udata.p point back to the original symbol this
3174 synthetic symbol was derived from. */
3175 s
->udata
.p
= syms
[i
];
3181 if (glink
!= NULL
&& relplt
!= NULL
)
3185 /* Add a symbol for the main glink trampoline. */
3186 memset (s
, 0, sizeof *s
);
3188 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3190 s
->value
= resolv_vma
- glink
->vma
;
3192 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3193 names
+= sizeof ("__glink_PLTresolve");
3198 /* FIXME: It would be very much nicer to put sym@plt on the
3199 stub rather than on the glink branch table entry. The
3200 objdump disassembler would then use a sensible symbol
3201 name on plt calls. The difficulty in doing so is
3202 a) finding the stubs, and,
3203 b) matching stubs against plt entries, and,
3204 c) there can be multiple stubs for a given plt entry.
3206 Solving (a) could be done by code scanning, but older
3207 ppc64 binaries used different stubs to current code.
3208 (b) is the tricky one since you need to known the toc
3209 pointer for at least one function that uses a pic stub to
3210 be able to calculate the plt address referenced.
3211 (c) means gdb would need to set multiple breakpoints (or
3212 find the glink branch itself) when setting breakpoints
3213 for pending shared library loads. */
3214 p
= relplt
->relocation
;
3215 for (i
= 0; i
< plt_count
; i
++, p
++)
3219 *s
= **p
->sym_ptr_ptr
;
3220 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3221 we are defining a symbol, ensure one of them is set. */
3222 if ((s
->flags
& BSF_LOCAL
) == 0)
3223 s
->flags
|= BSF_GLOBAL
;
3224 s
->flags
|= BSF_SYNTHETIC
;
3226 s
->value
= glink_vma
- glink
->vma
;
3229 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3230 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3232 memcpy (names
, "@plt", sizeof ("@plt"));
3233 names
+= sizeof ("@plt");
3248 /* The following functions are specific to the ELF linker, while
3249 functions above are used generally. Those named ppc64_elf_* are
3250 called by the main ELF linker code. They appear in this file more
3251 or less in the order in which they are called. eg.
3252 ppc64_elf_check_relocs is called early in the link process,
3253 ppc64_elf_finish_dynamic_sections is one of the last functions
3256 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3257 functions have both a function code symbol and a function descriptor
3258 symbol. A call to foo in a relocatable object file looks like:
3265 The function definition in another object file might be:
3269 . .quad .TOC.@tocbase
3275 When the linker resolves the call during a static link, the branch
3276 unsurprisingly just goes to .foo and the .opd information is unused.
3277 If the function definition is in a shared library, things are a little
3278 different: The call goes via a plt call stub, the opd information gets
3279 copied to the plt, and the linker patches the nop.
3287 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3288 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3289 . std 2,40(1) # this is the general idea
3297 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3299 The "reloc ()" notation is supposed to indicate that the linker emits
3300 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3303 What are the difficulties here? Well, firstly, the relocations
3304 examined by the linker in check_relocs are against the function code
3305 sym .foo, while the dynamic relocation in the plt is emitted against
3306 the function descriptor symbol, foo. Somewhere along the line, we need
3307 to carefully copy dynamic link information from one symbol to the other.
3308 Secondly, the generic part of the elf linker will make .foo a dynamic
3309 symbol as is normal for most other backends. We need foo dynamic
3310 instead, at least for an application final link. However, when
3311 creating a shared library containing foo, we need to have both symbols
3312 dynamic so that references to .foo are satisfied during the early
3313 stages of linking. Otherwise the linker might decide to pull in a
3314 definition from some other object, eg. a static library.
3316 Update: As of August 2004, we support a new convention. Function
3317 calls may use the function descriptor symbol, ie. "bl foo". This
3318 behaves exactly as "bl .foo". */
3320 /* The linker needs to keep track of the number of relocs that it
3321 decides to copy as dynamic relocs in check_relocs for each symbol.
3322 This is so that it can later discard them if they are found to be
3323 unnecessary. We store the information in a field extending the
3324 regular ELF linker hash table. */
3326 struct ppc_dyn_relocs
3328 struct ppc_dyn_relocs
*next
;
3330 /* The input section of the reloc. */
3333 /* Total number of relocs copied for the input section. */
3334 bfd_size_type count
;
3336 /* Number of pc-relative relocs copied for the input section. */
3337 bfd_size_type pc_count
;
3340 /* Track GOT entries needed for a given symbol. We might need more
3341 than one got entry per symbol. */
3344 struct got_entry
*next
;
3346 /* The symbol addend that we'll be placing in the GOT. */
3349 /* Unlike other ELF targets, we use separate GOT entries for the same
3350 symbol referenced from different input files. This is to support
3351 automatic multiple TOC/GOT sections, where the TOC base can vary
3352 from one input file to another. FIXME: After group_sections we
3353 ought to merge entries within the group.
3355 Point to the BFD owning this GOT entry. */
3358 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3359 TLS_TPREL or TLS_DTPREL for tls entries. */
3362 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3365 bfd_signed_vma refcount
;
3370 /* The same for PLT. */
3373 struct plt_entry
*next
;
3379 bfd_signed_vma refcount
;
3384 /* Of those relocs that might be copied as dynamic relocs, this function
3385 selects those that must be copied when linking a shared library,
3386 even when the symbol is local. */
3389 must_be_dyn_reloc (struct bfd_link_info
*info
,
3390 enum elf_ppc64_reloc_type r_type
)
3402 case R_PPC64_TPREL16
:
3403 case R_PPC64_TPREL16_LO
:
3404 case R_PPC64_TPREL16_HI
:
3405 case R_PPC64_TPREL16_HA
:
3406 case R_PPC64_TPREL16_DS
:
3407 case R_PPC64_TPREL16_LO_DS
:
3408 case R_PPC64_TPREL16_HIGHER
:
3409 case R_PPC64_TPREL16_HIGHERA
:
3410 case R_PPC64_TPREL16_HIGHEST
:
3411 case R_PPC64_TPREL16_HIGHESTA
:
3412 case R_PPC64_TPREL64
:
3413 return !info
->executable
;
3417 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3418 copying dynamic variables from a shared lib into an app's dynbss
3419 section, and instead use a dynamic relocation to point into the
3420 shared lib. With code that gcc generates, it's vital that this be
3421 enabled; In the PowerPC64 ABI, the address of a function is actually
3422 the address of a function descriptor, which resides in the .opd
3423 section. gcc uses the descriptor directly rather than going via the
3424 GOT as some other ABI's do, which means that initialized function
3425 pointers must reference the descriptor. Thus, a function pointer
3426 initialized to the address of a function in a shared library will
3427 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3428 redefines the function descriptor symbol to point to the copy. This
3429 presents a problem as a plt entry for that function is also
3430 initialized from the function descriptor symbol and the copy reloc
3431 may not be initialized first. */
3432 #define ELIMINATE_COPY_RELOCS 1
3434 /* Section name for stubs is the associated section name plus this
3436 #define STUB_SUFFIX ".stub"
3439 ppc_stub_long_branch:
3440 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3441 destination, but a 24 bit branch in a stub section will reach.
3444 ppc_stub_plt_branch:
3445 Similar to the above, but a 24 bit branch in the stub section won't
3446 reach its destination.
3447 . addis %r12,%r2,xxx@toc@ha
3448 . ld %r11,xxx@toc@l(%r12)
3453 Used to call a function in a shared library. If it so happens that
3454 the plt entry referenced crosses a 64k boundary, then an extra
3455 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3456 . addis %r12,%r2,xxx@toc@ha
3458 . ld %r11,xxx+0@toc@l(%r12)
3460 . ld %r2,xxx+8@toc@l(%r12)
3461 . ld %r11,xxx+16@toc@l(%r12)
3464 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3465 code to adjust the value and save r2 to support multiple toc sections.
3466 A ppc_stub_long_branch with an r2 offset looks like:
3468 . addis %r2,%r2,off@ha
3469 . addi %r2,%r2,off@l
3472 A ppc_stub_plt_branch with an r2 offset looks like:
3474 . addis %r12,%r2,xxx@toc@ha
3475 . ld %r11,xxx@toc@l(%r12)
3476 . addis %r2,%r2,off@ha
3477 . addi %r2,%r2,off@l
3481 In cases where the "addis" instruction would add zero, the "addis" is
3482 omitted and following instructions modified slightly in some cases.
3485 enum ppc_stub_type
{
3487 ppc_stub_long_branch
,
3488 ppc_stub_long_branch_r2off
,
3489 ppc_stub_plt_branch
,
3490 ppc_stub_plt_branch_r2off
,
3494 struct ppc_stub_hash_entry
{
3496 /* Base hash table entry structure. */
3497 struct bfd_hash_entry root
;
3499 enum ppc_stub_type stub_type
;
3501 /* The stub section. */
3504 /* Offset within stub_sec of the beginning of this stub. */
3505 bfd_vma stub_offset
;
3507 /* Given the symbol's value and its section we can determine its final
3508 value when building the stubs (so the stub knows where to jump. */
3509 bfd_vma target_value
;
3510 asection
*target_section
;
3512 /* The symbol table entry, if any, that this was derived from. */
3513 struct ppc_link_hash_entry
*h
;
3515 /* And the reloc addend that this was derived from. */
3518 /* Where this stub is being called from, or, in the case of combined
3519 stub sections, the first input section in the group. */
3523 struct ppc_branch_hash_entry
{
3525 /* Base hash table entry structure. */
3526 struct bfd_hash_entry root
;
3528 /* Offset within branch lookup table. */
3529 unsigned int offset
;
3531 /* Generation marker. */
3535 struct ppc_link_hash_entry
3537 struct elf_link_hash_entry elf
;
3540 /* A pointer to the most recently used stub hash entry against this
3542 struct ppc_stub_hash_entry
*stub_cache
;
3544 /* A pointer to the next symbol starting with a '.' */
3545 struct ppc_link_hash_entry
*next_dot_sym
;
3548 /* Track dynamic relocs copied for this symbol. */
3549 struct ppc_dyn_relocs
*dyn_relocs
;
3551 /* Link between function code and descriptor symbols. */
3552 struct ppc_link_hash_entry
*oh
;
3554 /* Flag function code and descriptor symbols. */
3555 unsigned int is_func
:1;
3556 unsigned int is_func_descriptor
:1;
3557 unsigned int fake
:1;
3559 /* Whether global opd/toc sym has been adjusted or not.
3560 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3561 should be set for all globals defined in any opd/toc section. */
3562 unsigned int adjust_done
:1;
3564 /* Set if we twiddled this symbol to weak at some stage. */
3565 unsigned int was_undefined
:1;
3567 /* Contexts in which symbol is used in the GOT (or TOC).
3568 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3569 corresponding relocs are encountered during check_relocs.
3570 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3571 indicate the corresponding GOT entry type is not needed.
3572 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3573 a TPREL one. We use a separate flag rather than setting TPREL
3574 just for convenience in distinguishing the two cases. */
3575 #define TLS_GD 1 /* GD reloc. */
3576 #define TLS_LD 2 /* LD reloc. */
3577 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3578 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3579 #define TLS_TLS 16 /* Any TLS reloc. */
3580 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3581 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3585 /* ppc64 ELF linker hash table. */
3587 struct ppc_link_hash_table
3589 struct elf_link_hash_table elf
;
3591 /* The stub hash table. */
3592 struct bfd_hash_table stub_hash_table
;
3594 /* Another hash table for plt_branch stubs. */
3595 struct bfd_hash_table branch_hash_table
;
3597 /* Linker stub bfd. */
3600 /* Linker call-backs. */
3601 asection
* (*add_stub_section
) (const char *, asection
*);
3602 void (*layout_sections_again
) (void);
3604 /* Array to keep track of which stub sections have been created, and
3605 information on stub grouping. */
3607 /* This is the section to which stubs in the group will be attached. */
3609 /* The stub section. */
3611 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3615 /* Temp used when calculating TOC pointers. */
3618 /* Highest input section id. */
3621 /* Highest output section index. */
3624 /* Used when adding symbols. */
3625 struct ppc_link_hash_entry
*dot_syms
;
3627 /* List of input sections for each output section. */
3628 asection
**input_list
;
3630 /* Short-cuts to get to dynamic linker sections. */
3641 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3642 struct ppc_link_hash_entry
*tls_get_addr
;
3643 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3646 unsigned long stub_count
[ppc_stub_plt_call
];
3648 /* Number of stubs against global syms. */
3649 unsigned long stub_globals
;
3651 /* Set if we should emit symbols for stubs. */
3652 unsigned int emit_stub_syms
:1;
3654 /* Support for multiple toc sections. */
3655 unsigned int no_multi_toc
:1;
3656 unsigned int multi_toc_needed
:1;
3659 unsigned int stub_error
:1;
3661 /* Temp used by ppc64_elf_process_dot_syms. */
3662 unsigned int twiddled_syms
:1;
3664 /* Incremented every time we size stubs. */
3665 unsigned int stub_iteration
;
3667 /* Small local sym to section mapping cache. */
3668 struct sym_sec_cache sym_sec
;
3671 /* Rename some of the generic section flags to better document how they
3673 #define has_toc_reloc has_gp_reloc
3674 #define makes_toc_func_call need_finalize_relax
3675 #define call_check_in_progress reloc_done
3677 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3679 #define ppc_hash_table(p) \
3680 ((struct ppc_link_hash_table *) ((p)->hash))
3682 #define ppc_stub_hash_lookup(table, string, create, copy) \
3683 ((struct ppc_stub_hash_entry *) \
3684 bfd_hash_lookup ((table), (string), (create), (copy)))
3686 #define ppc_branch_hash_lookup(table, string, create, copy) \
3687 ((struct ppc_branch_hash_entry *) \
3688 bfd_hash_lookup ((table), (string), (create), (copy)))
3690 /* Create an entry in the stub hash table. */
3692 static struct bfd_hash_entry
*
3693 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3694 struct bfd_hash_table
*table
,
3697 /* Allocate the structure if it has not already been allocated by a
3701 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3706 /* Call the allocation method of the superclass. */
3707 entry
= bfd_hash_newfunc (entry
, table
, string
);
3710 struct ppc_stub_hash_entry
*eh
;
3712 /* Initialize the local fields. */
3713 eh
= (struct ppc_stub_hash_entry
*) entry
;
3714 eh
->stub_type
= ppc_stub_none
;
3715 eh
->stub_sec
= NULL
;
3716 eh
->stub_offset
= 0;
3717 eh
->target_value
= 0;
3718 eh
->target_section
= NULL
;
3726 /* Create an entry in the branch hash table. */
3728 static struct bfd_hash_entry
*
3729 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3730 struct bfd_hash_table
*table
,
3733 /* Allocate the structure if it has not already been allocated by a
3737 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3742 /* Call the allocation method of the superclass. */
3743 entry
= bfd_hash_newfunc (entry
, table
, string
);
3746 struct ppc_branch_hash_entry
*eh
;
3748 /* Initialize the local fields. */
3749 eh
= (struct ppc_branch_hash_entry
*) entry
;
3757 /* Create an entry in a ppc64 ELF linker hash table. */
3759 static struct bfd_hash_entry
*
3760 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3761 struct bfd_hash_table
*table
,
3764 /* Allocate the structure if it has not already been allocated by a
3768 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3773 /* Call the allocation method of the superclass. */
3774 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3777 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3779 memset (&eh
->u
.stub_cache
, 0,
3780 (sizeof (struct ppc_link_hash_entry
)
3781 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3783 /* When making function calls, old ABI code references function entry
3784 points (dot symbols), while new ABI code references the function
3785 descriptor symbol. We need to make any combination of reference and
3786 definition work together, without breaking archive linking.
3788 For a defined function "foo" and an undefined call to "bar":
3789 An old object defines "foo" and ".foo", references ".bar" (possibly
3791 A new object defines "foo" and references "bar".
3793 A new object thus has no problem with its undefined symbols being
3794 satisfied by definitions in an old object. On the other hand, the
3795 old object won't have ".bar" satisfied by a new object.
3797 Keep a list of newly added dot-symbols. */
3799 if (string
[0] == '.')
3801 struct ppc_link_hash_table
*htab
;
3803 htab
= (struct ppc_link_hash_table
*) table
;
3804 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3805 htab
->dot_syms
= eh
;
3812 /* Create a ppc64 ELF linker hash table. */
3814 static struct bfd_link_hash_table
*
3815 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3817 struct ppc_link_hash_table
*htab
;
3818 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3820 htab
= bfd_zmalloc (amt
);
3824 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3825 sizeof (struct ppc_link_hash_entry
)))
3831 /* Init the stub hash table too. */
3832 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3833 sizeof (struct ppc_stub_hash_entry
)))
3836 /* And the branch hash table. */
3837 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3838 sizeof (struct ppc_branch_hash_entry
)))
3841 /* Initializing two fields of the union is just cosmetic. We really
3842 only care about glist, but when compiled on a 32-bit host the
3843 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3844 debugger inspection of these fields look nicer. */
3845 htab
->elf
.init_got_refcount
.refcount
= 0;
3846 htab
->elf
.init_got_refcount
.glist
= NULL
;
3847 htab
->elf
.init_plt_refcount
.refcount
= 0;
3848 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3849 htab
->elf
.init_got_offset
.offset
= 0;
3850 htab
->elf
.init_got_offset
.glist
= NULL
;
3851 htab
->elf
.init_plt_offset
.offset
= 0;
3852 htab
->elf
.init_plt_offset
.glist
= NULL
;
3854 return &htab
->elf
.root
;
3857 /* Free the derived linker hash table. */
3860 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3862 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3864 bfd_hash_table_free (&ret
->stub_hash_table
);
3865 bfd_hash_table_free (&ret
->branch_hash_table
);
3866 _bfd_generic_link_hash_table_free (hash
);
3869 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3872 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3874 struct ppc_link_hash_table
*htab
;
3876 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3878 /* Always hook our dynamic sections into the first bfd, which is the
3879 linker created stub bfd. This ensures that the GOT header is at
3880 the start of the output TOC section. */
3881 htab
= ppc_hash_table (info
);
3882 htab
->stub_bfd
= abfd
;
3883 htab
->elf
.dynobj
= abfd
;
3886 /* Build a name for an entry in the stub hash table. */
3889 ppc_stub_name (const asection
*input_section
,
3890 const asection
*sym_sec
,
3891 const struct ppc_link_hash_entry
*h
,
3892 const Elf_Internal_Rela
*rel
)
3897 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3898 offsets from a sym as a branch target? In fact, we could
3899 probably assume the addend is always zero. */
3900 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3904 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3905 stub_name
= bfd_malloc (len
);
3906 if (stub_name
== NULL
)
3909 sprintf (stub_name
, "%08x.%s+%x",
3910 input_section
->id
& 0xffffffff,
3911 h
->elf
.root
.root
.string
,
3912 (int) rel
->r_addend
& 0xffffffff);
3916 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3917 stub_name
= bfd_malloc (len
);
3918 if (stub_name
== NULL
)
3921 sprintf (stub_name
, "%08x.%x:%x+%x",
3922 input_section
->id
& 0xffffffff,
3923 sym_sec
->id
& 0xffffffff,
3924 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3925 (int) rel
->r_addend
& 0xffffffff);
3927 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3928 stub_name
[len
- 2] = 0;
3932 /* Look up an entry in the stub hash. Stub entries are cached because
3933 creating the stub name takes a bit of time. */
3935 static struct ppc_stub_hash_entry
*
3936 ppc_get_stub_entry (const asection
*input_section
,
3937 const asection
*sym_sec
,
3938 struct ppc_link_hash_entry
*h
,
3939 const Elf_Internal_Rela
*rel
,
3940 struct ppc_link_hash_table
*htab
)
3942 struct ppc_stub_hash_entry
*stub_entry
;
3943 const asection
*id_sec
;
3945 /* If this input section is part of a group of sections sharing one
3946 stub section, then use the id of the first section in the group.
3947 Stub names need to include a section id, as there may well be
3948 more than one stub used to reach say, printf, and we need to
3949 distinguish between them. */
3950 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3952 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
3953 && h
->u
.stub_cache
->h
== h
3954 && h
->u
.stub_cache
->id_sec
== id_sec
)
3956 stub_entry
= h
->u
.stub_cache
;
3962 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3963 if (stub_name
== NULL
)
3966 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3967 stub_name
, FALSE
, FALSE
);
3969 h
->u
.stub_cache
= stub_entry
;
3977 /* Add a new stub entry to the stub hash. Not all fields of the new
3978 stub entry are initialised. */
3980 static struct ppc_stub_hash_entry
*
3981 ppc_add_stub (const char *stub_name
,
3983 struct ppc_link_hash_table
*htab
)
3987 struct ppc_stub_hash_entry
*stub_entry
;
3989 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3990 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3991 if (stub_sec
== NULL
)
3993 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3994 if (stub_sec
== NULL
)
4000 namelen
= strlen (link_sec
->name
);
4001 len
= namelen
+ sizeof (STUB_SUFFIX
);
4002 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4006 memcpy (s_name
, link_sec
->name
, namelen
);
4007 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4008 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4009 if (stub_sec
== NULL
)
4011 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4013 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4016 /* Enter this entry into the linker stub hash table. */
4017 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4019 if (stub_entry
== NULL
)
4021 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4022 section
->owner
, stub_name
);
4026 stub_entry
->stub_sec
= stub_sec
;
4027 stub_entry
->stub_offset
= 0;
4028 stub_entry
->id_sec
= link_sec
;
4032 /* Create sections for linker generated code. */
4035 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4037 struct ppc_link_hash_table
*htab
;
4040 htab
= ppc_hash_table (info
);
4042 /* Create .sfpr for code to save and restore fp regs. */
4043 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4044 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4045 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4047 if (htab
->sfpr
== NULL
4048 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4051 /* Create .glink for lazy dynamic linking support. */
4052 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4054 if (htab
->glink
== NULL
4055 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4058 /* Create branch lookup table for plt_branch stubs. */
4059 flags
= (SEC_ALLOC
| SEC_LOAD
4060 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4061 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4063 if (htab
->brlt
== NULL
4064 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4070 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4071 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4072 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4076 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4082 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4083 not already done. */
4086 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4088 asection
*got
, *relgot
;
4090 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4092 if (!is_ppc64_elf (abfd
))
4097 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4100 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4105 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4106 | SEC_LINKER_CREATED
);
4108 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4110 || !bfd_set_section_alignment (abfd
, got
, 3))
4113 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4114 flags
| SEC_READONLY
);
4116 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4119 ppc64_elf_tdata (abfd
)->got
= got
;
4120 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4124 /* Create the dynamic sections, and set up shortcuts. */
4127 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4129 struct ppc_link_hash_table
*htab
;
4131 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4134 htab
= ppc_hash_table (info
);
4136 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4137 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4138 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4139 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4141 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4143 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4144 || (!info
->shared
&& !htab
->relbss
))
4150 /* Merge PLT info on FROM with that on TO. */
4153 move_plt_plist (struct ppc_link_hash_entry
*from
,
4154 struct ppc_link_hash_entry
*to
)
4156 if (from
->elf
.plt
.plist
!= NULL
)
4158 if (to
->elf
.plt
.plist
!= NULL
)
4160 struct plt_entry
**entp
;
4161 struct plt_entry
*ent
;
4163 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4165 struct plt_entry
*dent
;
4167 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4168 if (dent
->addend
== ent
->addend
)
4170 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4177 *entp
= to
->elf
.plt
.plist
;
4180 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4181 from
->elf
.plt
.plist
= NULL
;
4185 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4188 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4189 struct elf_link_hash_entry
*dir
,
4190 struct elf_link_hash_entry
*ind
)
4192 struct ppc_link_hash_entry
*edir
, *eind
;
4194 edir
= (struct ppc_link_hash_entry
*) dir
;
4195 eind
= (struct ppc_link_hash_entry
*) ind
;
4197 /* Copy over any dynamic relocs we may have on the indirect sym. */
4198 if (eind
->dyn_relocs
!= NULL
)
4200 if (edir
->dyn_relocs
!= NULL
)
4202 struct ppc_dyn_relocs
**pp
;
4203 struct ppc_dyn_relocs
*p
;
4205 /* Add reloc counts against the indirect sym to the direct sym
4206 list. Merge any entries against the same section. */
4207 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4209 struct ppc_dyn_relocs
*q
;
4211 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4212 if (q
->sec
== p
->sec
)
4214 q
->pc_count
+= p
->pc_count
;
4215 q
->count
+= p
->count
;
4222 *pp
= edir
->dyn_relocs
;
4225 edir
->dyn_relocs
= eind
->dyn_relocs
;
4226 eind
->dyn_relocs
= NULL
;
4229 edir
->is_func
|= eind
->is_func
;
4230 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4231 edir
->tls_mask
|= eind
->tls_mask
;
4233 /* If called to transfer flags for a weakdef during processing
4234 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4235 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4236 if (!(ELIMINATE_COPY_RELOCS
4237 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4238 && edir
->elf
.dynamic_adjusted
))
4239 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4241 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4242 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4243 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4244 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4246 /* If we were called to copy over info for a weak sym, that's all. */
4247 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4250 /* Copy over got entries that we may have already seen to the
4251 symbol which just became indirect. */
4252 if (eind
->elf
.got
.glist
!= NULL
)
4254 if (edir
->elf
.got
.glist
!= NULL
)
4256 struct got_entry
**entp
;
4257 struct got_entry
*ent
;
4259 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4261 struct got_entry
*dent
;
4263 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4264 if (dent
->addend
== ent
->addend
4265 && dent
->owner
== ent
->owner
4266 && dent
->tls_type
== ent
->tls_type
)
4268 dent
->got
.refcount
+= ent
->got
.refcount
;
4275 *entp
= edir
->elf
.got
.glist
;
4278 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4279 eind
->elf
.got
.glist
= NULL
;
4282 /* And plt entries. */
4283 move_plt_plist (eind
, edir
);
4285 if (eind
->elf
.dynindx
!= -1)
4287 if (edir
->elf
.dynindx
!= -1)
4288 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4289 edir
->elf
.dynstr_index
);
4290 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4291 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4292 eind
->elf
.dynindx
= -1;
4293 eind
->elf
.dynstr_index
= 0;
4297 /* Find the function descriptor hash entry from the given function code
4298 hash entry FH. Link the entries via their OH fields. */
4300 static struct ppc_link_hash_entry
*
4301 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4303 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4307 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4309 fdh
= (struct ppc_link_hash_entry
*)
4310 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4313 fdh
->is_func_descriptor
= 1;
4323 /* Make a fake function descriptor sym for the code sym FH. */
4325 static struct ppc_link_hash_entry
*
4326 make_fdh (struct bfd_link_info
*info
,
4327 struct ppc_link_hash_entry
*fh
)
4331 struct bfd_link_hash_entry
*bh
;
4332 struct ppc_link_hash_entry
*fdh
;
4334 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4335 newsym
= bfd_make_empty_symbol (abfd
);
4336 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4337 newsym
->section
= bfd_und_section_ptr
;
4339 newsym
->flags
= BSF_WEAK
;
4342 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4343 newsym
->flags
, newsym
->section
,
4344 newsym
->value
, NULL
, FALSE
, FALSE
,
4348 fdh
= (struct ppc_link_hash_entry
*) bh
;
4349 fdh
->elf
.non_elf
= 0;
4351 fdh
->is_func_descriptor
= 1;
4358 /* Fix function descriptor symbols defined in .opd sections to be
4362 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
4363 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4364 Elf_Internal_Sym
*isym
,
4365 const char **name ATTRIBUTE_UNUSED
,
4366 flagword
*flags ATTRIBUTE_UNUSED
,
4368 bfd_vma
*value ATTRIBUTE_UNUSED
)
4371 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4372 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4377 /* This function makes an old ABI object reference to ".bar" cause the
4378 inclusion of a new ABI object archive that defines "bar".
4379 NAME is a symbol defined in an archive. Return a symbol in the hash
4380 table that might be satisfied by the archive symbols. */
4382 static struct elf_link_hash_entry
*
4383 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4384 struct bfd_link_info
*info
,
4387 struct elf_link_hash_entry
*h
;
4391 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4393 /* Don't return this sym if it is a fake function descriptor
4394 created by add_symbol_adjust. */
4395 && !(h
->root
.type
== bfd_link_hash_undefweak
4396 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4402 len
= strlen (name
);
4403 dot_name
= bfd_alloc (abfd
, len
+ 2);
4404 if (dot_name
== NULL
)
4405 return (struct elf_link_hash_entry
*) 0 - 1;
4407 memcpy (dot_name
+ 1, name
, len
+ 1);
4408 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4409 bfd_release (abfd
, dot_name
);
4413 /* This function satisfies all old ABI object references to ".bar" if a
4414 new ABI object defines "bar". Well, at least, undefined dot symbols
4415 are made weak. This stops later archive searches from including an
4416 object if we already have a function descriptor definition. It also
4417 prevents the linker complaining about undefined symbols.
4418 We also check and correct mismatched symbol visibility here. The
4419 most restrictive visibility of the function descriptor and the
4420 function entry symbol is used. */
4423 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4425 struct ppc_link_hash_table
*htab
;
4426 struct ppc_link_hash_entry
*fdh
;
4428 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4431 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4432 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4434 if (eh
->elf
.root
.root
.string
[0] != '.')
4437 htab
= ppc_hash_table (info
);
4438 fdh
= get_fdh (eh
, htab
);
4440 && !info
->relocatable
4441 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4442 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4443 && eh
->elf
.ref_regular
)
4445 /* Make an undefweak function descriptor sym, which is enough to
4446 pull in an --as-needed shared lib, but won't cause link
4447 errors. Archives are handled elsewhere. */
4448 fdh
= make_fdh (info
, eh
);
4452 fdh
->elf
.ref_regular
= 1;
4454 else if (fdh
!= NULL
)
4456 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4457 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4458 if (entry_vis
< descr_vis
)
4459 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4460 else if (entry_vis
> descr_vis
)
4461 eh
->elf
.other
+= descr_vis
- entry_vis
;
4463 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4464 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4465 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4467 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4468 eh
->was_undefined
= 1;
4469 htab
->twiddled_syms
= 1;
4476 /* Process list of dot-symbols we made in link_hash_newfunc. */
4479 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4481 struct ppc_link_hash_table
*htab
;
4482 struct ppc_link_hash_entry
**p
, *eh
;
4484 htab
= ppc_hash_table (info
);
4485 if (!is_ppc64_elf (info
->output_bfd
))
4488 if (is_ppc64_elf (ibfd
))
4490 p
= &htab
->dot_syms
;
4491 while ((eh
= *p
) != NULL
)
4494 if (!add_symbol_adjust (eh
, info
))
4496 p
= &eh
->u
.next_dot_sym
;
4500 /* Clear the list for non-ppc64 input files. */
4501 p
= &htab
->dot_syms
;
4502 while ((eh
= *p
) != NULL
)
4505 p
= &eh
->u
.next_dot_sym
;
4508 /* We need to fix the undefs list for any syms we have twiddled to
4510 if (htab
->twiddled_syms
)
4512 bfd_link_repair_undef_list (&htab
->elf
.root
);
4513 htab
->twiddled_syms
= 0;
4518 /* Undo hash table changes when an --as-needed input file is determined
4519 not to be needed. */
4522 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4523 struct bfd_link_info
*info
)
4525 ppc_hash_table (info
)->dot_syms
= NULL
;
4530 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4531 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4533 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4534 char *local_got_tls_masks
;
4536 if (local_got_ents
== NULL
)
4538 bfd_size_type size
= symtab_hdr
->sh_info
;
4540 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4541 local_got_ents
= bfd_zalloc (abfd
, size
);
4542 if (local_got_ents
== NULL
)
4544 elf_local_got_ents (abfd
) = local_got_ents
;
4547 if ((tls_type
& TLS_EXPLICIT
) == 0)
4549 struct got_entry
*ent
;
4551 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4552 if (ent
->addend
== r_addend
4553 && ent
->owner
== abfd
4554 && ent
->tls_type
== tls_type
)
4558 bfd_size_type amt
= sizeof (*ent
);
4559 ent
= bfd_alloc (abfd
, amt
);
4562 ent
->next
= local_got_ents
[r_symndx
];
4563 ent
->addend
= r_addend
;
4565 ent
->tls_type
= tls_type
;
4566 ent
->got
.refcount
= 0;
4567 local_got_ents
[r_symndx
] = ent
;
4569 ent
->got
.refcount
+= 1;
4572 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4573 local_got_tls_masks
[r_symndx
] |= tls_type
;
4578 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4580 struct plt_entry
*ent
;
4582 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4583 if (ent
->addend
== addend
)
4587 bfd_size_type amt
= sizeof (*ent
);
4588 ent
= bfd_alloc (abfd
, amt
);
4591 ent
->next
= eh
->elf
.plt
.plist
;
4592 ent
->addend
= addend
;
4593 ent
->plt
.refcount
= 0;
4594 eh
->elf
.plt
.plist
= ent
;
4596 ent
->plt
.refcount
+= 1;
4597 eh
->elf
.needs_plt
= 1;
4598 if (eh
->elf
.root
.root
.string
[0] == '.'
4599 && eh
->elf
.root
.root
.string
[1] != '\0')
4604 /* Look through the relocs for a section during the first phase, and
4605 calculate needed space in the global offset table, procedure
4606 linkage table, and dynamic reloc sections. */
4609 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4610 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4612 struct ppc_link_hash_table
*htab
;
4613 Elf_Internal_Shdr
*symtab_hdr
;
4614 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4615 const Elf_Internal_Rela
*rel
;
4616 const Elf_Internal_Rela
*rel_end
;
4618 asection
**opd_sym_map
;
4619 struct elf_link_hash_entry
*tga
, *dottga
;
4621 if (info
->relocatable
)
4624 /* Don't do anything special with non-loaded, non-alloced sections.
4625 In particular, any relocs in such sections should not affect GOT
4626 and PLT reference counting (ie. we don't allow them to create GOT
4627 or PLT entries), there's no possibility or desire to optimize TLS
4628 relocs, and there's not much point in propagating relocs to shared
4629 libs that the dynamic linker won't relocate. */
4630 if ((sec
->flags
& SEC_ALLOC
) == 0)
4633 BFD_ASSERT (is_ppc64_elf (abfd
));
4635 htab
= ppc_hash_table (info
);
4636 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4637 FALSE
, FALSE
, TRUE
);
4638 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4639 FALSE
, FALSE
, TRUE
);
4640 symtab_hdr
= &elf_symtab_hdr (abfd
);
4642 sym_hashes
= elf_sym_hashes (abfd
);
4643 sym_hashes_end
= (sym_hashes
4644 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4645 - symtab_hdr
->sh_info
);
4649 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4651 /* Garbage collection needs some extra help with .opd sections.
4652 We don't want to necessarily keep everything referenced by
4653 relocs in .opd, as that would keep all functions. Instead,
4654 if we reference an .opd symbol (a function descriptor), we
4655 want to keep the function code symbol's section. This is
4656 easy for global symbols, but for local syms we need to keep
4657 information about the associated function section. */
4660 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4661 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4662 if (opd_sym_map
== NULL
)
4664 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4665 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4666 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4669 if (htab
->sfpr
== NULL
4670 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4673 rel_end
= relocs
+ sec
->reloc_count
;
4674 for (rel
= relocs
; rel
< rel_end
; rel
++)
4676 unsigned long r_symndx
;
4677 struct elf_link_hash_entry
*h
;
4678 enum elf_ppc64_reloc_type r_type
;
4680 struct _ppc64_elf_section_data
*ppc64_sec
;
4682 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4683 if (r_symndx
< symtab_hdr
->sh_info
)
4687 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4688 while (h
->root
.type
== bfd_link_hash_indirect
4689 || h
->root
.type
== bfd_link_hash_warning
)
4690 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4694 r_type
= ELF64_R_TYPE (rel
->r_info
);
4695 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4703 case R_PPC64_REL14_BRTAKEN
:
4704 case R_PPC64_REL14_BRNTAKEN
:
4705 case R_PPC64_ADDR24
:
4706 case R_PPC64_ADDR14
:
4707 case R_PPC64_ADDR14_BRTAKEN
:
4708 case R_PPC64_ADDR14_BRNTAKEN
:
4710 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4711 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4712 /* We have a new-style __tls_get_addr call with a marker
4716 /* Mark this section as having an old-style call. */
4717 sec
->has_tls_get_addr_call
= 1;
4725 /* These special tls relocs tie a call to __tls_get_addr with
4726 its parameter symbol. */
4729 case R_PPC64_GOT_TLSLD16
:
4730 case R_PPC64_GOT_TLSLD16_LO
:
4731 case R_PPC64_GOT_TLSLD16_HI
:
4732 case R_PPC64_GOT_TLSLD16_HA
:
4733 tls_type
= TLS_TLS
| TLS_LD
;
4736 case R_PPC64_GOT_TLSGD16
:
4737 case R_PPC64_GOT_TLSGD16_LO
:
4738 case R_PPC64_GOT_TLSGD16_HI
:
4739 case R_PPC64_GOT_TLSGD16_HA
:
4740 tls_type
= TLS_TLS
| TLS_GD
;
4743 case R_PPC64_GOT_TPREL16_DS
:
4744 case R_PPC64_GOT_TPREL16_LO_DS
:
4745 case R_PPC64_GOT_TPREL16_HI
:
4746 case R_PPC64_GOT_TPREL16_HA
:
4747 if (!info
->executable
)
4748 info
->flags
|= DF_STATIC_TLS
;
4749 tls_type
= TLS_TLS
| TLS_TPREL
;
4752 case R_PPC64_GOT_DTPREL16_DS
:
4753 case R_PPC64_GOT_DTPREL16_LO_DS
:
4754 case R_PPC64_GOT_DTPREL16_HI
:
4755 case R_PPC64_GOT_DTPREL16_HA
:
4756 tls_type
= TLS_TLS
| TLS_DTPREL
;
4758 sec
->has_tls_reloc
= 1;
4762 case R_PPC64_GOT16_DS
:
4763 case R_PPC64_GOT16_HA
:
4764 case R_PPC64_GOT16_HI
:
4765 case R_PPC64_GOT16_LO
:
4766 case R_PPC64_GOT16_LO_DS
:
4767 /* This symbol requires a global offset table entry. */
4768 sec
->has_toc_reloc
= 1;
4769 if (ppc64_elf_tdata (abfd
)->got
== NULL
4770 && !create_got_section (abfd
, info
))
4775 struct ppc_link_hash_entry
*eh
;
4776 struct got_entry
*ent
;
4778 eh
= (struct ppc_link_hash_entry
*) h
;
4779 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4780 if (ent
->addend
== rel
->r_addend
4781 && ent
->owner
== abfd
4782 && ent
->tls_type
== tls_type
)
4786 bfd_size_type amt
= sizeof (*ent
);
4787 ent
= bfd_alloc (abfd
, amt
);
4790 ent
->next
= eh
->elf
.got
.glist
;
4791 ent
->addend
= rel
->r_addend
;
4793 ent
->tls_type
= tls_type
;
4794 ent
->got
.refcount
= 0;
4795 eh
->elf
.got
.glist
= ent
;
4797 ent
->got
.refcount
+= 1;
4798 eh
->tls_mask
|= tls_type
;
4801 /* This is a global offset table entry for a local symbol. */
4802 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4803 rel
->r_addend
, tls_type
))
4807 case R_PPC64_PLT16_HA
:
4808 case R_PPC64_PLT16_HI
:
4809 case R_PPC64_PLT16_LO
:
4812 /* This symbol requires a procedure linkage table entry. We
4813 actually build the entry in adjust_dynamic_symbol,
4814 because this might be a case of linking PIC code without
4815 linking in any dynamic objects, in which case we don't
4816 need to generate a procedure linkage table after all. */
4819 /* It does not make sense to have a procedure linkage
4820 table entry for a local symbol. */
4821 bfd_set_error (bfd_error_bad_value
);
4825 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4830 /* The following relocations don't need to propagate the
4831 relocation if linking a shared object since they are
4832 section relative. */
4833 case R_PPC64_SECTOFF
:
4834 case R_PPC64_SECTOFF_LO
:
4835 case R_PPC64_SECTOFF_HI
:
4836 case R_PPC64_SECTOFF_HA
:
4837 case R_PPC64_SECTOFF_DS
:
4838 case R_PPC64_SECTOFF_LO_DS
:
4839 case R_PPC64_DTPREL16
:
4840 case R_PPC64_DTPREL16_LO
:
4841 case R_PPC64_DTPREL16_HI
:
4842 case R_PPC64_DTPREL16_HA
:
4843 case R_PPC64_DTPREL16_DS
:
4844 case R_PPC64_DTPREL16_LO_DS
:
4845 case R_PPC64_DTPREL16_HIGHER
:
4846 case R_PPC64_DTPREL16_HIGHERA
:
4847 case R_PPC64_DTPREL16_HIGHEST
:
4848 case R_PPC64_DTPREL16_HIGHESTA
:
4853 case R_PPC64_TOC16_LO
:
4854 case R_PPC64_TOC16_HI
:
4855 case R_PPC64_TOC16_HA
:
4856 case R_PPC64_TOC16_DS
:
4857 case R_PPC64_TOC16_LO_DS
:
4858 sec
->has_toc_reloc
= 1;
4861 /* This relocation describes the C++ object vtable hierarchy.
4862 Reconstruct it for later use during GC. */
4863 case R_PPC64_GNU_VTINHERIT
:
4864 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4868 /* This relocation describes which C++ vtable entries are actually
4869 used. Record for later use during GC. */
4870 case R_PPC64_GNU_VTENTRY
:
4871 BFD_ASSERT (h
!= NULL
);
4873 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4878 case R_PPC64_REL14_BRTAKEN
:
4879 case R_PPC64_REL14_BRNTAKEN
:
4881 asection
*dest
= NULL
;
4883 /* Heuristic: If jumping outside our section, chances are
4884 we are going to need a stub. */
4887 /* If the sym is weak it may be overridden later, so
4888 don't assume we know where a weak sym lives. */
4889 if (h
->root
.type
== bfd_link_hash_defined
)
4890 dest
= h
->root
.u
.def
.section
;
4893 dest
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4896 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
4903 /* We may need a .plt entry if the function this reloc
4904 refers to is in a shared lib. */
4905 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4908 if (h
== tga
|| h
== dottga
)
4909 sec
->has_tls_reloc
= 1;
4913 case R_PPC64_TPREL64
:
4914 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4915 if (!info
->executable
)
4916 info
->flags
|= DF_STATIC_TLS
;
4919 case R_PPC64_DTPMOD64
:
4920 if (rel
+ 1 < rel_end
4921 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4922 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4923 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4925 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4928 case R_PPC64_DTPREL64
:
4929 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4931 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4932 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4933 /* This is the second reloc of a dtpmod, dtprel pair.
4934 Don't mark with TLS_DTPREL. */
4938 sec
->has_tls_reloc
= 1;
4941 struct ppc_link_hash_entry
*eh
;
4942 eh
= (struct ppc_link_hash_entry
*) h
;
4943 eh
->tls_mask
|= tls_type
;
4946 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4947 rel
->r_addend
, tls_type
))
4950 ppc64_sec
= ppc64_elf_section_data (sec
);
4951 if (ppc64_sec
->sec_type
!= sec_toc
)
4955 /* One extra to simplify get_tls_mask. */
4956 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
4957 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
4958 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
4960 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
4961 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
4962 if (ppc64_sec
->u
.toc
.add
== NULL
)
4964 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
4965 ppc64_sec
->sec_type
= sec_toc
;
4967 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4968 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
4969 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
4971 /* Mark the second slot of a GD or LD entry.
4972 -1 to indicate GD and -2 to indicate LD. */
4973 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4974 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
4975 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4976 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
4979 case R_PPC64_TPREL16
:
4980 case R_PPC64_TPREL16_LO
:
4981 case R_PPC64_TPREL16_HI
:
4982 case R_PPC64_TPREL16_HA
:
4983 case R_PPC64_TPREL16_DS
:
4984 case R_PPC64_TPREL16_LO_DS
:
4985 case R_PPC64_TPREL16_HIGHER
:
4986 case R_PPC64_TPREL16_HIGHERA
:
4987 case R_PPC64_TPREL16_HIGHEST
:
4988 case R_PPC64_TPREL16_HIGHESTA
:
4991 if (!info
->executable
)
4992 info
->flags
|= DF_STATIC_TLS
;
4997 case R_PPC64_ADDR64
:
4998 if (opd_sym_map
!= NULL
4999 && rel
+ 1 < rel_end
5000 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5004 if (h
->root
.root
.string
[0] == '.'
5005 && h
->root
.root
.string
[1] != 0
5006 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5009 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5015 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
5020 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5028 case R_PPC64_ADDR14
:
5029 case R_PPC64_ADDR14_BRNTAKEN
:
5030 case R_PPC64_ADDR14_BRTAKEN
:
5031 case R_PPC64_ADDR16
:
5032 case R_PPC64_ADDR16_DS
:
5033 case R_PPC64_ADDR16_HA
:
5034 case R_PPC64_ADDR16_HI
:
5035 case R_PPC64_ADDR16_HIGHER
:
5036 case R_PPC64_ADDR16_HIGHERA
:
5037 case R_PPC64_ADDR16_HIGHEST
:
5038 case R_PPC64_ADDR16_HIGHESTA
:
5039 case R_PPC64_ADDR16_LO
:
5040 case R_PPC64_ADDR16_LO_DS
:
5041 case R_PPC64_ADDR24
:
5042 case R_PPC64_ADDR32
:
5043 case R_PPC64_UADDR16
:
5044 case R_PPC64_UADDR32
:
5045 case R_PPC64_UADDR64
:
5047 if (h
!= NULL
&& !info
->shared
)
5048 /* We may need a copy reloc. */
5051 /* Don't propagate .opd relocs. */
5052 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5055 /* If we are creating a shared library, and this is a reloc
5056 against a global symbol, or a non PC relative reloc
5057 against a local symbol, then we need to copy the reloc
5058 into the shared library. However, if we are linking with
5059 -Bsymbolic, we do not need to copy a reloc against a
5060 global symbol which is defined in an object we are
5061 including in the link (i.e., DEF_REGULAR is set). At
5062 this point we have not seen all the input files, so it is
5063 possible that DEF_REGULAR is not set now but will be set
5064 later (it is never cleared). In case of a weak definition,
5065 DEF_REGULAR may be cleared later by a strong definition in
5066 a shared library. We account for that possibility below by
5067 storing information in the dyn_relocs field of the hash
5068 table entry. A similar situation occurs when creating
5069 shared libraries and symbol visibility changes render the
5072 If on the other hand, we are creating an executable, we
5073 may need to keep relocations for symbols satisfied by a
5074 dynamic library if we manage to avoid copy relocs for the
5078 && (must_be_dyn_reloc (info
, r_type
)
5080 && (! info
->symbolic
5081 || h
->root
.type
== bfd_link_hash_defweak
5082 || !h
->def_regular
))))
5083 || (ELIMINATE_COPY_RELOCS
5086 && (h
->root
.type
== bfd_link_hash_defweak
5087 || !h
->def_regular
)))
5089 struct ppc_dyn_relocs
*p
;
5090 struct ppc_dyn_relocs
**head
;
5092 /* We must copy these reloc types into the output file.
5093 Create a reloc section in dynobj and make room for
5097 sreloc
= _bfd_elf_make_dynamic_reloc_section
5098 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5104 /* If this is a global symbol, we count the number of
5105 relocations we need for this symbol. */
5108 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5112 /* Track dynamic relocs needed for local syms too.
5113 We really need local syms available to do this
5119 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
5124 vpp
= &elf_section_data (s
)->local_dynrel
;
5125 head
= (struct ppc_dyn_relocs
**) vpp
;
5129 if (p
== NULL
|| p
->sec
!= sec
)
5131 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5142 if (!must_be_dyn_reloc (info
, r_type
))
5155 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5156 of the code entry point, and its section. */
5159 opd_entry_value (asection
*opd_sec
,
5161 asection
**code_sec
,
5164 bfd
*opd_bfd
= opd_sec
->owner
;
5165 Elf_Internal_Rela
*relocs
;
5166 Elf_Internal_Rela
*lo
, *hi
, *look
;
5169 /* No relocs implies we are linking a --just-symbols object. */
5170 if (opd_sec
->reloc_count
== 0)
5174 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5175 return (bfd_vma
) -1;
5177 if (code_sec
!= NULL
)
5179 asection
*sec
, *likely
= NULL
;
5180 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5182 && (sec
->flags
& SEC_LOAD
) != 0
5183 && (sec
->flags
& SEC_ALLOC
) != 0)
5188 if (code_off
!= NULL
)
5189 *code_off
= val
- likely
->vma
;
5195 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5197 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5199 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5201 /* Go find the opd reloc at the sym address. */
5203 BFD_ASSERT (lo
!= NULL
);
5204 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5208 look
= lo
+ (hi
- lo
) / 2;
5209 if (look
->r_offset
< offset
)
5211 else if (look
->r_offset
> offset
)
5215 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5217 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5218 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5220 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5223 if (symndx
< symtab_hdr
->sh_info
)
5225 Elf_Internal_Sym
*sym
;
5227 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5230 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5231 symtab_hdr
->sh_info
,
5232 0, NULL
, NULL
, NULL
);
5235 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5239 val
= sym
->st_value
;
5240 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5241 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5245 struct elf_link_hash_entry
**sym_hashes
;
5246 struct elf_link_hash_entry
*rh
;
5248 sym_hashes
= elf_sym_hashes (opd_bfd
);
5249 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5250 while (rh
->root
.type
== bfd_link_hash_indirect
5251 || rh
->root
.type
== bfd_link_hash_warning
)
5252 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
5253 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5254 || rh
->root
.type
== bfd_link_hash_defweak
);
5255 val
= rh
->root
.u
.def
.value
;
5256 sec
= rh
->root
.u
.def
.section
;
5258 val
+= look
->r_addend
;
5259 if (code_off
!= NULL
)
5261 if (code_sec
!= NULL
)
5263 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5264 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5273 /* Mark all our entry sym sections, both opd and code section. */
5276 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5278 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5279 struct bfd_sym_chain
*sym
;
5281 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5283 struct ppc_link_hash_entry
*eh
;
5286 eh
= (struct ppc_link_hash_entry
*)
5287 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
5290 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5291 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5294 if (eh
->is_func_descriptor
5295 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5296 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5298 sec
= eh
->oh
->elf
.root
.u
.def
.section
;
5299 sec
->flags
|= SEC_KEEP
;
5301 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5302 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5303 eh
->elf
.root
.u
.def
.value
,
5304 &sec
, NULL
) != (bfd_vma
) -1)
5305 sec
->flags
|= SEC_KEEP
;
5307 sec
= eh
->elf
.root
.u
.def
.section
;
5308 sec
->flags
|= SEC_KEEP
;
5312 /* Mark sections containing dynamically referenced symbols. When
5313 building shared libraries, we must assume that any visible symbol is
5317 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5319 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5320 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5322 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5323 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5325 /* Dynamic linking info is on the func descriptor sym. */
5327 && eh
->oh
->is_func_descriptor
5328 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5329 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5332 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5333 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5334 && (eh
->elf
.ref_dynamic
5335 || (!info
->executable
5336 && eh
->elf
.def_regular
5337 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5338 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5342 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5344 /* Function descriptor syms cause the associated
5345 function code sym section to be marked. */
5346 if (eh
->is_func_descriptor
5347 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5348 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5349 eh
->oh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5350 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5351 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5352 eh
->elf
.root
.u
.def
.value
,
5353 &code_sec
, NULL
) != (bfd_vma
) -1)
5354 code_sec
->flags
|= SEC_KEEP
;
5360 /* Return the section that should be marked against GC for a given
5364 ppc64_elf_gc_mark_hook (asection
*sec
,
5365 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
5366 Elf_Internal_Rela
*rel
,
5367 struct elf_link_hash_entry
*h
,
5368 Elf_Internal_Sym
*sym
)
5372 /* Syms return NULL if we're marking .opd, so we avoid marking all
5373 function sections, as all functions are referenced in .opd. */
5375 if (get_opd_info (sec
) != NULL
)
5380 enum elf_ppc64_reloc_type r_type
;
5381 struct ppc_link_hash_entry
*eh
;
5383 r_type
= ELF64_R_TYPE (rel
->r_info
);
5386 case R_PPC64_GNU_VTINHERIT
:
5387 case R_PPC64_GNU_VTENTRY
:
5391 switch (h
->root
.type
)
5393 case bfd_link_hash_defined
:
5394 case bfd_link_hash_defweak
:
5395 eh
= (struct ppc_link_hash_entry
*) h
;
5397 && eh
->oh
->is_func_descriptor
5398 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5399 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5402 /* Function descriptor syms cause the associated
5403 function code sym section to be marked. */
5404 if (eh
->is_func_descriptor
5405 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5406 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5408 /* They also mark their opd section. */
5409 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5411 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5413 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5414 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5415 eh
->elf
.root
.u
.def
.value
,
5416 &rsec
, NULL
) != (bfd_vma
) -1)
5417 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5419 rsec
= h
->root
.u
.def
.section
;
5422 case bfd_link_hash_common
:
5423 rsec
= h
->root
.u
.c
.p
->section
;
5433 struct _opd_sec_data
*opd
;
5435 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5436 opd
= get_opd_info (rsec
);
5437 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5441 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5448 /* Update the .got, .plt. and dynamic reloc reference counts for the
5449 section being removed. */
5452 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5453 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5455 struct ppc_link_hash_table
*htab
;
5456 Elf_Internal_Shdr
*symtab_hdr
;
5457 struct elf_link_hash_entry
**sym_hashes
;
5458 struct got_entry
**local_got_ents
;
5459 const Elf_Internal_Rela
*rel
, *relend
;
5461 if (info
->relocatable
)
5464 if ((sec
->flags
& SEC_ALLOC
) == 0)
5467 elf_section_data (sec
)->local_dynrel
= NULL
;
5469 htab
= ppc_hash_table (info
);
5470 symtab_hdr
= &elf_symtab_hdr (abfd
);
5471 sym_hashes
= elf_sym_hashes (abfd
);
5472 local_got_ents
= elf_local_got_ents (abfd
);
5474 relend
= relocs
+ sec
->reloc_count
;
5475 for (rel
= relocs
; rel
< relend
; rel
++)
5477 unsigned long r_symndx
;
5478 enum elf_ppc64_reloc_type r_type
;
5479 struct elf_link_hash_entry
*h
= NULL
;
5482 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5483 r_type
= ELF64_R_TYPE (rel
->r_info
);
5484 if (r_symndx
>= symtab_hdr
->sh_info
)
5486 struct ppc_link_hash_entry
*eh
;
5487 struct ppc_dyn_relocs
**pp
;
5488 struct ppc_dyn_relocs
*p
;
5490 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5491 while (h
->root
.type
== bfd_link_hash_indirect
5492 || h
->root
.type
== bfd_link_hash_warning
)
5493 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5494 eh
= (struct ppc_link_hash_entry
*) h
;
5496 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5499 /* Everything must go for SEC. */
5507 case R_PPC64_GOT_TLSLD16
:
5508 case R_PPC64_GOT_TLSLD16_LO
:
5509 case R_PPC64_GOT_TLSLD16_HI
:
5510 case R_PPC64_GOT_TLSLD16_HA
:
5511 tls_type
= TLS_TLS
| TLS_LD
;
5514 case R_PPC64_GOT_TLSGD16
:
5515 case R_PPC64_GOT_TLSGD16_LO
:
5516 case R_PPC64_GOT_TLSGD16_HI
:
5517 case R_PPC64_GOT_TLSGD16_HA
:
5518 tls_type
= TLS_TLS
| TLS_GD
;
5521 case R_PPC64_GOT_TPREL16_DS
:
5522 case R_PPC64_GOT_TPREL16_LO_DS
:
5523 case R_PPC64_GOT_TPREL16_HI
:
5524 case R_PPC64_GOT_TPREL16_HA
:
5525 tls_type
= TLS_TLS
| TLS_TPREL
;
5528 case R_PPC64_GOT_DTPREL16_DS
:
5529 case R_PPC64_GOT_DTPREL16_LO_DS
:
5530 case R_PPC64_GOT_DTPREL16_HI
:
5531 case R_PPC64_GOT_DTPREL16_HA
:
5532 tls_type
= TLS_TLS
| TLS_DTPREL
;
5536 case R_PPC64_GOT16_DS
:
5537 case R_PPC64_GOT16_HA
:
5538 case R_PPC64_GOT16_HI
:
5539 case R_PPC64_GOT16_LO
:
5540 case R_PPC64_GOT16_LO_DS
:
5543 struct got_entry
*ent
;
5548 ent
= local_got_ents
[r_symndx
];
5550 for (; ent
!= NULL
; ent
= ent
->next
)
5551 if (ent
->addend
== rel
->r_addend
5552 && ent
->owner
== abfd
5553 && ent
->tls_type
== tls_type
)
5557 if (ent
->got
.refcount
> 0)
5558 ent
->got
.refcount
-= 1;
5562 case R_PPC64_PLT16_HA
:
5563 case R_PPC64_PLT16_HI
:
5564 case R_PPC64_PLT16_LO
:
5568 case R_PPC64_REL14_BRNTAKEN
:
5569 case R_PPC64_REL14_BRTAKEN
:
5573 struct plt_entry
*ent
;
5575 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5576 if (ent
->addend
== rel
->r_addend
)
5580 if (ent
->plt
.refcount
> 0)
5581 ent
->plt
.refcount
-= 1;
5592 /* The maximum size of .sfpr. */
5593 #define SFPR_MAX (218*4)
5595 struct sfpr_def_parms
5597 const char name
[12];
5598 unsigned char lo
, hi
;
5599 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5600 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5603 /* Auto-generate _save*, _rest* functions in .sfpr. */
5606 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5608 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5610 size_t len
= strlen (parm
->name
);
5611 bfd_boolean writing
= FALSE
;
5614 memcpy (sym
, parm
->name
, len
);
5617 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5619 struct elf_link_hash_entry
*h
;
5621 sym
[len
+ 0] = i
/ 10 + '0';
5622 sym
[len
+ 1] = i
% 10 + '0';
5623 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5627 h
->root
.type
= bfd_link_hash_defined
;
5628 h
->root
.u
.def
.section
= htab
->sfpr
;
5629 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5632 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5634 if (htab
->sfpr
->contents
== NULL
)
5636 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5637 if (htab
->sfpr
->contents
== NULL
)
5643 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5645 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5647 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5648 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5656 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5658 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5663 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5665 p
= savegpr0 (abfd
, p
, r
);
5666 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5668 bfd_put_32 (abfd
, BLR
, p
);
5673 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5675 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5680 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5682 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5684 p
= restgpr0 (abfd
, p
, r
);
5685 bfd_put_32 (abfd
, MTLR_R0
, p
);
5689 p
= restgpr0 (abfd
, p
, 30);
5690 p
= restgpr0 (abfd
, p
, 31);
5692 bfd_put_32 (abfd
, BLR
, p
);
5697 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5699 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5704 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5706 p
= savegpr1 (abfd
, p
, r
);
5707 bfd_put_32 (abfd
, BLR
, p
);
5712 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5714 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5719 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5721 p
= restgpr1 (abfd
, p
, r
);
5722 bfd_put_32 (abfd
, BLR
, p
);
5727 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5729 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5734 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5736 p
= savefpr (abfd
, p
, r
);
5737 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5739 bfd_put_32 (abfd
, BLR
, p
);
5744 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5746 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5751 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5753 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5755 p
= restfpr (abfd
, p
, r
);
5756 bfd_put_32 (abfd
, MTLR_R0
, p
);
5760 p
= restfpr (abfd
, p
, 30);
5761 p
= restfpr (abfd
, p
, 31);
5763 bfd_put_32 (abfd
, BLR
, p
);
5768 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5770 p
= savefpr (abfd
, p
, r
);
5771 bfd_put_32 (abfd
, BLR
, p
);
5776 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5778 p
= restfpr (abfd
, p
, r
);
5779 bfd_put_32 (abfd
, BLR
, p
);
5784 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5786 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5788 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5793 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5795 p
= savevr (abfd
, p
, r
);
5796 bfd_put_32 (abfd
, BLR
, p
);
5801 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5803 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5805 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5810 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5812 p
= restvr (abfd
, p
, r
);
5813 bfd_put_32 (abfd
, BLR
, p
);
5817 /* Called via elf_link_hash_traverse to transfer dynamic linking
5818 information on function code symbol entries to their corresponding
5819 function descriptor symbol entries. */
5822 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5824 struct bfd_link_info
*info
;
5825 struct ppc_link_hash_table
*htab
;
5826 struct plt_entry
*ent
;
5827 struct ppc_link_hash_entry
*fh
;
5828 struct ppc_link_hash_entry
*fdh
;
5829 bfd_boolean force_local
;
5831 fh
= (struct ppc_link_hash_entry
*) h
;
5832 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5835 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5836 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5839 htab
= ppc_hash_table (info
);
5841 /* Resolve undefined references to dot-symbols as the value
5842 in the function descriptor, if we have one in a regular object.
5843 This is to satisfy cases like ".quad .foo". Calls to functions
5844 in dynamic objects are handled elsewhere. */
5845 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5846 && fh
->was_undefined
5847 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5848 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5849 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5850 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5851 fh
->oh
->elf
.root
.u
.def
.value
,
5852 &fh
->elf
.root
.u
.def
.section
,
5853 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5855 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5856 fh
->elf
.forced_local
= 1;
5857 fh
->elf
.def_regular
= fh
->oh
->elf
.def_regular
;
5858 fh
->elf
.def_dynamic
= fh
->oh
->elf
.def_dynamic
;
5861 /* If this is a function code symbol, transfer dynamic linking
5862 information to the function descriptor symbol. */
5866 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5867 if (ent
->plt
.refcount
> 0)
5870 || fh
->elf
.root
.root
.string
[0] != '.'
5871 || fh
->elf
.root
.root
.string
[1] == '\0')
5874 /* Find the corresponding function descriptor symbol. Create it
5875 as undefined if necessary. */
5877 fdh
= get_fdh (fh
, htab
);
5879 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5880 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5881 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5884 && !info
->executable
5885 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5886 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5888 fdh
= make_fdh (info
, fh
);
5893 /* Fake function descriptors are made undefweak. If the function
5894 code symbol is strong undefined, make the fake sym the same.
5895 If the function code symbol is defined, then force the fake
5896 descriptor local; We can't support overriding of symbols in a
5897 shared library on a fake descriptor. */
5901 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5903 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5905 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5906 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5908 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5909 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5911 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5916 && !fdh
->elf
.forced_local
5917 && (!info
->executable
5918 || fdh
->elf
.def_dynamic
5919 || fdh
->elf
.ref_dynamic
5920 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5921 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5923 if (fdh
->elf
.dynindx
== -1)
5924 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5926 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5927 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5928 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5929 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5930 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5932 move_plt_plist (fh
, fdh
);
5933 fdh
->elf
.needs_plt
= 1;
5935 fdh
->is_func_descriptor
= 1;
5940 /* Now that the info is on the function descriptor, clear the
5941 function code sym info. Any function code syms for which we
5942 don't have a definition in a regular file, we force local.
5943 This prevents a shared library from exporting syms that have
5944 been imported from another library. Function code syms that
5945 are really in the library we must leave global to prevent the
5946 linker dragging in a definition from a static library. */
5947 force_local
= (!fh
->elf
.def_regular
5949 || !fdh
->elf
.def_regular
5950 || fdh
->elf
.forced_local
);
5951 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5956 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5957 this hook to a) provide some gcc support functions, and b) transfer
5958 dynamic linking information gathered so far on function code symbol
5959 entries, to their corresponding function descriptor symbol entries. */
5962 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5963 struct bfd_link_info
*info
)
5965 struct ppc_link_hash_table
*htab
;
5967 const struct sfpr_def_parms funcs
[] =
5969 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5970 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5971 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5972 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5973 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5974 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5975 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5976 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5977 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5978 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5979 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5980 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5983 htab
= ppc_hash_table (info
);
5984 if (htab
->sfpr
== NULL
)
5985 /* We don't have any relocs. */
5988 /* Provide any missing _save* and _rest* functions. */
5989 htab
->sfpr
->size
= 0;
5990 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5991 if (!sfpr_define (info
, &funcs
[i
]))
5994 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5996 if (htab
->sfpr
->size
== 0)
5997 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6002 /* Adjust a symbol defined by a dynamic object and referenced by a
6003 regular object. The current definition is in some section of the
6004 dynamic object, but we're not including those sections. We have to
6005 change the definition to something the rest of the link can
6009 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6010 struct elf_link_hash_entry
*h
)
6012 struct ppc_link_hash_table
*htab
;
6015 htab
= ppc_hash_table (info
);
6017 /* Deal with function syms. */
6018 if (h
->type
== STT_FUNC
6021 /* Clear procedure linkage table information for any symbol that
6022 won't need a .plt entry. */
6023 struct plt_entry
*ent
;
6024 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6025 if (ent
->plt
.refcount
> 0)
6028 || SYMBOL_CALLS_LOCAL (info
, h
)
6029 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6030 && h
->root
.type
== bfd_link_hash_undefweak
))
6032 h
->plt
.plist
= NULL
;
6037 h
->plt
.plist
= NULL
;
6039 /* If this is a weak symbol, and there is a real definition, the
6040 processor independent code will have arranged for us to see the
6041 real definition first, and we can just use the same value. */
6042 if (h
->u
.weakdef
!= NULL
)
6044 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6045 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6046 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6047 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6048 if (ELIMINATE_COPY_RELOCS
)
6049 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6053 /* If we are creating a shared library, we must presume that the
6054 only references to the symbol are via the global offset table.
6055 For such cases we need not do anything here; the relocations will
6056 be handled correctly by relocate_section. */
6060 /* If there are no references to this symbol that do not use the
6061 GOT, we don't need to generate a copy reloc. */
6062 if (!h
->non_got_ref
)
6065 /* Don't generate a copy reloc for symbols defined in the executable. */
6066 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6069 if (ELIMINATE_COPY_RELOCS
)
6071 struct ppc_link_hash_entry
* eh
;
6072 struct ppc_dyn_relocs
*p
;
6074 eh
= (struct ppc_link_hash_entry
*) h
;
6075 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6077 s
= p
->sec
->output_section
;
6078 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6082 /* If we didn't find any dynamic relocs in read-only sections, then
6083 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6091 if (h
->plt
.plist
!= NULL
)
6093 /* We should never get here, but unfortunately there are versions
6094 of gcc out there that improperly (for this ABI) put initialized
6095 function pointers, vtable refs and suchlike in read-only
6096 sections. Allow them to proceed, but warn that this might
6097 break at runtime. */
6098 (*_bfd_error_handler
)
6099 (_("copy reloc against `%s' requires lazy plt linking; "
6100 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6101 h
->root
.root
.string
);
6104 /* This is a reference to a symbol defined by a dynamic object which
6105 is not a function. */
6109 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6110 h
->root
.root
.string
);
6114 /* We must allocate the symbol in our .dynbss section, which will
6115 become part of the .bss section of the executable. There will be
6116 an entry for this symbol in the .dynsym section. The dynamic
6117 object will contain position independent code, so all references
6118 from the dynamic object to this symbol will go through the global
6119 offset table. The dynamic linker will use the .dynsym entry to
6120 determine the address it must put in the global offset table, so
6121 both the dynamic object and the regular object will refer to the
6122 same memory location for the variable. */
6124 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6125 to copy the initial value out of the dynamic object and into the
6126 runtime process image. We need to remember the offset into the
6127 .rela.bss section we are going to use. */
6128 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6130 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6136 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6139 /* If given a function descriptor symbol, hide both the function code
6140 sym and the descriptor. */
6142 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6143 struct elf_link_hash_entry
*h
,
6144 bfd_boolean force_local
)
6146 struct ppc_link_hash_entry
*eh
;
6147 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6149 eh
= (struct ppc_link_hash_entry
*) h
;
6150 if (eh
->is_func_descriptor
)
6152 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6157 struct ppc_link_hash_table
*htab
;
6160 /* We aren't supposed to use alloca in BFD because on
6161 systems which do not have alloca the version in libiberty
6162 calls xmalloc, which might cause the program to crash
6163 when it runs out of memory. This function doesn't have a
6164 return status, so there's no way to gracefully return an
6165 error. So cheat. We know that string[-1] can be safely
6166 accessed; It's either a string in an ELF string table,
6167 or allocated in an objalloc structure. */
6169 p
= eh
->elf
.root
.root
.string
- 1;
6172 htab
= ppc_hash_table (info
);
6173 fh
= (struct ppc_link_hash_entry
*)
6174 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6177 /* Unfortunately, if it so happens that the string we were
6178 looking for was allocated immediately before this string,
6179 then we overwrote the string terminator. That's the only
6180 reason the lookup should fail. */
6183 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6184 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6186 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6187 fh
= (struct ppc_link_hash_entry
*)
6188 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6197 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6202 get_sym_h (struct elf_link_hash_entry
**hp
,
6203 Elf_Internal_Sym
**symp
,
6206 Elf_Internal_Sym
**locsymsp
,
6207 unsigned long r_symndx
,
6210 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6212 if (r_symndx
>= symtab_hdr
->sh_info
)
6214 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6215 struct elf_link_hash_entry
*h
;
6217 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6218 while (h
->root
.type
== bfd_link_hash_indirect
6219 || h
->root
.type
== bfd_link_hash_warning
)
6220 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6228 if (symsecp
!= NULL
)
6230 asection
*symsec
= NULL
;
6231 if (h
->root
.type
== bfd_link_hash_defined
6232 || h
->root
.type
== bfd_link_hash_defweak
)
6233 symsec
= h
->root
.u
.def
.section
;
6237 if (tls_maskp
!= NULL
)
6239 struct ppc_link_hash_entry
*eh
;
6241 eh
= (struct ppc_link_hash_entry
*) h
;
6242 *tls_maskp
= &eh
->tls_mask
;
6247 Elf_Internal_Sym
*sym
;
6248 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6250 if (locsyms
== NULL
)
6252 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6253 if (locsyms
== NULL
)
6254 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6255 symtab_hdr
->sh_info
,
6256 0, NULL
, NULL
, NULL
);
6257 if (locsyms
== NULL
)
6259 *locsymsp
= locsyms
;
6261 sym
= locsyms
+ r_symndx
;
6269 if (symsecp
!= NULL
)
6270 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6272 if (tls_maskp
!= NULL
)
6274 struct got_entry
**lgot_ents
;
6278 lgot_ents
= elf_local_got_ents (ibfd
);
6279 if (lgot_ents
!= NULL
)
6281 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
6282 tls_mask
= &lgot_masks
[r_symndx
];
6284 *tls_maskp
= tls_mask
;
6290 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6291 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6292 type suitable for optimization, and 1 otherwise. */
6295 get_tls_mask (char **tls_maskp
,
6296 unsigned long *toc_symndx
,
6297 bfd_vma
*toc_addend
,
6298 Elf_Internal_Sym
**locsymsp
,
6299 const Elf_Internal_Rela
*rel
,
6302 unsigned long r_symndx
;
6304 struct elf_link_hash_entry
*h
;
6305 Elf_Internal_Sym
*sym
;
6309 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6310 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6313 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6315 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6318 /* Look inside a TOC section too. */
6321 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6322 off
= h
->root
.u
.def
.value
;
6325 off
= sym
->st_value
;
6326 off
+= rel
->r_addend
;
6327 BFD_ASSERT (off
% 8 == 0);
6328 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6329 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6330 if (toc_symndx
!= NULL
)
6331 *toc_symndx
= r_symndx
;
6332 if (toc_addend
!= NULL
)
6333 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6334 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6337 || ((h
->root
.type
== bfd_link_hash_defined
6338 || h
->root
.type
== bfd_link_hash_defweak
)
6339 && !h
->def_dynamic
))
6340 && (next_r
== -1 || next_r
== -2))
6345 /* Adjust all global syms defined in opd sections. In gcc generated
6346 code for the old ABI, these will already have been done. */
6349 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6351 struct ppc_link_hash_entry
*eh
;
6353 struct _opd_sec_data
*opd
;
6355 if (h
->root
.type
== bfd_link_hash_indirect
)
6358 if (h
->root
.type
== bfd_link_hash_warning
)
6359 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6361 if (h
->root
.type
!= bfd_link_hash_defined
6362 && h
->root
.type
!= bfd_link_hash_defweak
)
6365 eh
= (struct ppc_link_hash_entry
*) h
;
6366 if (eh
->adjust_done
)
6369 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6370 opd
= get_opd_info (sym_sec
);
6371 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6373 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6376 /* This entry has been deleted. */
6377 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6380 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6381 if (elf_discarded_section (dsec
))
6383 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6387 eh
->elf
.root
.u
.def
.value
= 0;
6388 eh
->elf
.root
.u
.def
.section
= dsec
;
6391 eh
->elf
.root
.u
.def
.value
+= adjust
;
6392 eh
->adjust_done
= 1;
6397 /* Handles decrementing dynamic reloc counts for the reloc specified by
6398 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6399 have already been determined. */
6402 dec_dynrel_count (bfd_vma r_info
,
6404 struct bfd_link_info
*info
,
6405 Elf_Internal_Sym
**local_syms
,
6406 struct elf_link_hash_entry
*h
,
6409 enum elf_ppc64_reloc_type r_type
;
6410 struct ppc_dyn_relocs
*p
;
6411 struct ppc_dyn_relocs
**pp
;
6413 /* Can this reloc be dynamic? This switch, and later tests here
6414 should be kept in sync with the code in check_relocs. */
6415 r_type
= ELF64_R_TYPE (r_info
);
6421 case R_PPC64_TPREL16
:
6422 case R_PPC64_TPREL16_LO
:
6423 case R_PPC64_TPREL16_HI
:
6424 case R_PPC64_TPREL16_HA
:
6425 case R_PPC64_TPREL16_DS
:
6426 case R_PPC64_TPREL16_LO_DS
:
6427 case R_PPC64_TPREL16_HIGHER
:
6428 case R_PPC64_TPREL16_HIGHERA
:
6429 case R_PPC64_TPREL16_HIGHEST
:
6430 case R_PPC64_TPREL16_HIGHESTA
:
6434 case R_PPC64_TPREL64
:
6435 case R_PPC64_DTPMOD64
:
6436 case R_PPC64_DTPREL64
:
6437 case R_PPC64_ADDR64
:
6441 case R_PPC64_ADDR14
:
6442 case R_PPC64_ADDR14_BRNTAKEN
:
6443 case R_PPC64_ADDR14_BRTAKEN
:
6444 case R_PPC64_ADDR16
:
6445 case R_PPC64_ADDR16_DS
:
6446 case R_PPC64_ADDR16_HA
:
6447 case R_PPC64_ADDR16_HI
:
6448 case R_PPC64_ADDR16_HIGHER
:
6449 case R_PPC64_ADDR16_HIGHERA
:
6450 case R_PPC64_ADDR16_HIGHEST
:
6451 case R_PPC64_ADDR16_HIGHESTA
:
6452 case R_PPC64_ADDR16_LO
:
6453 case R_PPC64_ADDR16_LO_DS
:
6454 case R_PPC64_ADDR24
:
6455 case R_PPC64_ADDR32
:
6456 case R_PPC64_UADDR16
:
6457 case R_PPC64_UADDR32
:
6458 case R_PPC64_UADDR64
:
6463 if (local_syms
!= NULL
)
6465 unsigned long r_symndx
;
6466 Elf_Internal_Sym
*sym
;
6467 bfd
*ibfd
= sec
->owner
;
6469 r_symndx
= ELF64_R_SYM (r_info
);
6470 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6475 && (must_be_dyn_reloc (info
, r_type
)
6478 || h
->root
.type
== bfd_link_hash_defweak
6479 || !h
->def_regular
))))
6480 || (ELIMINATE_COPY_RELOCS
6483 && (h
->root
.type
== bfd_link_hash_defweak
6484 || !h
->def_regular
)))
6490 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6493 if (sym_sec
!= NULL
)
6495 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6496 pp
= (struct ppc_dyn_relocs
**) vpp
;
6500 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6501 pp
= (struct ppc_dyn_relocs
**) vpp
;
6504 /* elf_gc_sweep may have already removed all dyn relocs associated
6505 with local syms for a given section. Don't report a dynreloc
6511 while ((p
= *pp
) != NULL
)
6515 if (!must_be_dyn_reloc (info
, r_type
))
6525 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6527 bfd_set_error (bfd_error_bad_value
);
6531 /* Remove unused Official Procedure Descriptor entries. Currently we
6532 only remove those associated with functions in discarded link-once
6533 sections, or weakly defined functions that have been overridden. It
6534 would be possible to remove many more entries for statically linked
6538 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6539 bfd_boolean non_overlapping
)
6542 bfd_boolean some_edited
= FALSE
;
6543 asection
*need_pad
= NULL
;
6545 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6548 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6549 Elf_Internal_Shdr
*symtab_hdr
;
6550 Elf_Internal_Sym
*local_syms
;
6551 struct elf_link_hash_entry
**sym_hashes
;
6553 struct _opd_sec_data
*opd
;
6554 bfd_boolean need_edit
, add_aux_fields
;
6555 bfd_size_type cnt_16b
= 0;
6557 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6558 if (sec
== NULL
|| sec
->size
== 0)
6561 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6564 if (sec
->output_section
== bfd_abs_section_ptr
)
6567 /* Look through the section relocs. */
6568 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6572 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6573 sym_hashes
= elf_sym_hashes (ibfd
);
6575 /* Read the relocations. */
6576 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6578 if (relstart
== NULL
)
6581 /* First run through the relocs to check they are sane, and to
6582 determine whether we need to edit this opd section. */
6586 relend
= relstart
+ sec
->reloc_count
;
6587 for (rel
= relstart
; rel
< relend
; )
6589 enum elf_ppc64_reloc_type r_type
;
6590 unsigned long r_symndx
;
6592 struct elf_link_hash_entry
*h
;
6593 Elf_Internal_Sym
*sym
;
6595 /* .opd contains a regular array of 16 or 24 byte entries. We're
6596 only interested in the reloc pointing to a function entry
6598 if (rel
->r_offset
!= offset
6599 || rel
+ 1 >= relend
6600 || (rel
+ 1)->r_offset
!= offset
+ 8)
6602 /* If someone messes with .opd alignment then after a
6603 "ld -r" we might have padding in the middle of .opd.
6604 Also, there's nothing to prevent someone putting
6605 something silly in .opd with the assembler. No .opd
6606 optimization for them! */
6608 (*_bfd_error_handler
)
6609 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6614 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6615 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6617 (*_bfd_error_handler
)
6618 (_("%B: unexpected reloc type %u in .opd section"),
6624 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6625 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6629 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6631 const char *sym_name
;
6633 sym_name
= h
->root
.root
.string
;
6635 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6638 (*_bfd_error_handler
)
6639 (_("%B: undefined sym `%s' in .opd section"),
6645 /* opd entries are always for functions defined in the
6646 current input bfd. If the symbol isn't defined in the
6647 input bfd, then we won't be using the function in this
6648 bfd; It must be defined in a linkonce section in another
6649 bfd, or is weak. It's also possible that we are
6650 discarding the function due to a linker script /DISCARD/,
6651 which we test for via the output_section. */
6652 if (sym_sec
->owner
!= ibfd
6653 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6658 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6660 if (sec
->size
== offset
+ 24)
6665 if (rel
== relend
&& sec
->size
== offset
+ 16)
6673 if (rel
->r_offset
== offset
+ 24)
6675 else if (rel
->r_offset
!= offset
+ 16)
6677 else if (rel
+ 1 < relend
6678 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6679 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6684 else if (rel
+ 2 < relend
6685 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6686 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6695 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6697 if (need_edit
|| add_aux_fields
)
6699 Elf_Internal_Rela
*write_rel
;
6700 bfd_byte
*rptr
, *wptr
;
6701 bfd_byte
*new_contents
= NULL
;
6706 amt
= sec
->size
* sizeof (long) / 8;
6707 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
6708 opd
->adjust
= bfd_zalloc (obfd
, amt
);
6709 if (opd
->adjust
== NULL
)
6711 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
6713 /* This seems a waste of time as input .opd sections are all
6714 zeros as generated by gcc, but I suppose there's no reason
6715 this will always be so. We might start putting something in
6716 the third word of .opd entries. */
6717 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6720 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6725 if (local_syms
!= NULL
6726 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6728 if (elf_section_data (sec
)->relocs
!= relstart
)
6732 sec
->contents
= loc
;
6733 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6736 elf_section_data (sec
)->relocs
= relstart
;
6738 new_contents
= sec
->contents
;
6741 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6742 if (new_contents
== NULL
)
6746 wptr
= new_contents
;
6747 rptr
= sec
->contents
;
6749 write_rel
= relstart
;
6753 for (rel
= relstart
; rel
< relend
; rel
++)
6755 unsigned long r_symndx
;
6757 struct elf_link_hash_entry
*h
;
6758 Elf_Internal_Sym
*sym
;
6760 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6761 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6765 if (rel
->r_offset
== offset
)
6767 struct ppc_link_hash_entry
*fdh
= NULL
;
6769 /* See if the .opd entry is full 24 byte or
6770 16 byte (with fd_aux entry overlapped with next
6773 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6774 || (rel
+ 3 < relend
6775 && rel
[2].r_offset
== offset
+ 16
6776 && rel
[3].r_offset
== offset
+ 24
6777 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6778 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6782 && h
->root
.root
.string
[0] == '.')
6784 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6785 ppc_hash_table (info
));
6787 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6788 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6792 skip
= (sym_sec
->owner
!= ibfd
6793 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6796 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6798 /* Arrange for the function descriptor sym
6800 fdh
->elf
.root
.u
.def
.value
= 0;
6801 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6803 opd
->adjust
[rel
->r_offset
/ 8] = -1;
6807 /* We'll be keeping this opd entry. */
6811 /* Redefine the function descriptor symbol to
6812 this location in the opd section. It is
6813 necessary to update the value here rather
6814 than using an array of adjustments as we do
6815 for local symbols, because various places
6816 in the generic ELF code use the value
6817 stored in u.def.value. */
6818 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6819 fdh
->adjust_done
= 1;
6822 /* Local syms are a bit tricky. We could
6823 tweak them as they can be cached, but
6824 we'd need to look through the local syms
6825 for the function descriptor sym which we
6826 don't have at the moment. So keep an
6827 array of adjustments. */
6828 opd
->adjust
[rel
->r_offset
/ 8]
6829 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6832 memcpy (wptr
, rptr
, opd_ent_size
);
6833 wptr
+= opd_ent_size
;
6834 if (add_aux_fields
&& opd_ent_size
== 16)
6836 memset (wptr
, '\0', 8);
6840 rptr
+= opd_ent_size
;
6841 offset
+= opd_ent_size
;
6847 && !info
->relocatable
6848 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
6854 /* We need to adjust any reloc offsets to point to the
6855 new opd entries. While we're at it, we may as well
6856 remove redundant relocs. */
6857 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
6858 if (write_rel
!= rel
)
6859 memcpy (write_rel
, rel
, sizeof (*rel
));
6864 sec
->size
= wptr
- new_contents
;
6865 sec
->reloc_count
= write_rel
- relstart
;
6868 free (sec
->contents
);
6869 sec
->contents
= new_contents
;
6872 /* Fudge the header size too, as this is used later in
6873 elf_bfd_final_link if we are emitting relocs. */
6874 elf_section_data (sec
)->rel_hdr
.sh_size
6875 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6876 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6879 else if (elf_section_data (sec
)->relocs
!= relstart
)
6882 if (local_syms
!= NULL
6883 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6885 if (!info
->keep_memory
)
6888 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6893 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6895 /* If we are doing a final link and the last .opd entry is just 16 byte
6896 long, add a 8 byte padding after it. */
6897 if (need_pad
!= NULL
&& !info
->relocatable
)
6901 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6903 BFD_ASSERT (need_pad
->size
> 0);
6905 p
= bfd_malloc (need_pad
->size
+ 8);
6909 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6910 p
, 0, need_pad
->size
))
6913 need_pad
->contents
= p
;
6914 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6918 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6922 need_pad
->contents
= p
;
6925 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6926 need_pad
->size
+= 8;
6932 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6935 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6937 struct ppc_link_hash_table
*htab
;
6939 htab
= ppc_hash_table (info
);
6940 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
6941 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
6942 FALSE
, FALSE
, TRUE
));
6943 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
6944 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
6945 FALSE
, FALSE
, TRUE
));
6946 return _bfd_elf_tls_setup (obfd
, info
);
6949 /* Return TRUE iff REL is a branch reloc with a global symbol matching
6953 branch_reloc_hash_match (const bfd
*ibfd
,
6954 const Elf_Internal_Rela
*rel
,
6955 const struct ppc_link_hash_entry
*hash1
,
6956 const struct ppc_link_hash_entry
*hash2
)
6958 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6959 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
6960 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
6962 if (r_symndx
>= symtab_hdr
->sh_info
6963 && (r_type
== R_PPC64_REL24
6964 || r_type
== R_PPC64_REL14
6965 || r_type
== R_PPC64_REL14_BRTAKEN
6966 || r_type
== R_PPC64_REL14_BRNTAKEN
6967 || r_type
== R_PPC64_ADDR24
6968 || r_type
== R_PPC64_ADDR14
6969 || r_type
== R_PPC64_ADDR14_BRTAKEN
6970 || r_type
== R_PPC64_ADDR14_BRNTAKEN
))
6972 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6973 struct elf_link_hash_entry
*h
;
6975 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6976 while (h
->root
.type
== bfd_link_hash_indirect
6977 || h
->root
.type
== bfd_link_hash_warning
)
6978 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6979 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
6985 /* Run through all the TLS relocs looking for optimization
6986 opportunities. The linker has been hacked (see ppc64elf.em) to do
6987 a preliminary section layout so that we know the TLS segment
6988 offsets. We can't optimize earlier because some optimizations need
6989 to know the tp offset, and we need to optimize before allocating
6990 dynamic relocations. */
6993 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6997 struct ppc_link_hash_table
*htab
;
7000 if (info
->relocatable
|| !info
->executable
)
7003 htab
= ppc_hash_table (info
);
7004 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7006 Elf_Internal_Sym
*locsyms
= NULL
;
7007 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7008 unsigned char *toc_ref
= NULL
;
7010 /* Look at all the sections for this file. Make two passes over
7011 the relocs. On the first pass, mark toc entries involved
7012 with tls relocs, and check that tls relocs involved in
7013 setting up a tls_get_addr call are indeed followed by such a
7014 call. If they are not, exclude them from the optimizations
7015 done on the second pass. */
7016 for (pass
= 0; pass
< 2; ++pass
)
7017 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7018 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7020 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7022 /* Read the relocations. */
7023 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7025 if (relstart
== NULL
)
7028 relend
= relstart
+ sec
->reloc_count
;
7029 for (rel
= relstart
; rel
< relend
; rel
++)
7031 enum elf_ppc64_reloc_type r_type
;
7032 unsigned long r_symndx
;
7033 struct elf_link_hash_entry
*h
;
7034 Elf_Internal_Sym
*sym
;
7037 char tls_set
, tls_clear
, tls_type
= 0;
7039 bfd_boolean ok_tprel
, is_local
;
7040 long toc_ref_index
= 0;
7041 int expecting_tls_get_addr
= 0;
7043 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7044 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7048 if (elf_section_data (sec
)->relocs
!= relstart
)
7050 if (toc_ref
!= NULL
)
7053 && (elf_symtab_hdr (ibfd
).contents
7054 != (unsigned char *) locsyms
))
7061 if (h
->root
.type
!= bfd_link_hash_defined
7062 && h
->root
.type
!= bfd_link_hash_defweak
)
7064 value
= h
->root
.u
.def
.value
;
7067 /* Symbols referenced by TLS relocs must be of type
7068 STT_TLS. So no need for .opd local sym adjust. */
7069 value
= sym
->st_value
;
7077 value
+= sym_sec
->output_offset
;
7078 value
+= sym_sec
->output_section
->vma
;
7079 value
-= htab
->elf
.tls_sec
->vma
;
7080 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7081 < (bfd_vma
) 1 << 32);
7084 r_type
= ELF64_R_TYPE (rel
->r_info
);
7087 case R_PPC64_GOT_TLSLD16
:
7088 case R_PPC64_GOT_TLSLD16_LO
:
7089 expecting_tls_get_addr
= 1;
7092 case R_PPC64_GOT_TLSLD16_HI
:
7093 case R_PPC64_GOT_TLSLD16_HA
:
7094 /* These relocs should never be against a symbol
7095 defined in a shared lib. Leave them alone if
7096 that turns out to be the case. */
7103 tls_type
= TLS_TLS
| TLS_LD
;
7106 case R_PPC64_GOT_TLSGD16
:
7107 case R_PPC64_GOT_TLSGD16_LO
:
7108 expecting_tls_get_addr
= 1;
7111 case R_PPC64_GOT_TLSGD16_HI
:
7112 case R_PPC64_GOT_TLSGD16_HA
:
7118 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7120 tls_type
= TLS_TLS
| TLS_GD
;
7123 case R_PPC64_GOT_TPREL16_DS
:
7124 case R_PPC64_GOT_TPREL16_LO_DS
:
7125 case R_PPC64_GOT_TPREL16_HI
:
7126 case R_PPC64_GOT_TPREL16_HA
:
7131 tls_clear
= TLS_TPREL
;
7132 tls_type
= TLS_TLS
| TLS_TPREL
;
7138 case R_PPC64_TOC16_LO
:
7142 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7145 /* Mark this toc entry as referenced by a TLS
7146 code sequence. We can do that now in the
7147 case of R_PPC64_TLS, and after checking for
7148 tls_get_addr for the TOC16 relocs. */
7149 if (toc_ref
== NULL
)
7151 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7152 if (toc_ref
== NULL
)
7156 value
= h
->root
.u
.def
.value
;
7158 value
= sym
->st_value
;
7159 value
+= rel
->r_addend
;
7160 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7161 toc_ref_index
= value
/ 8;
7162 if (r_type
== R_PPC64_TLS
7163 || r_type
== R_PPC64_TLSGD
7164 || r_type
== R_PPC64_TLSLD
)
7166 toc_ref
[toc_ref_index
] = 1;
7170 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7175 expecting_tls_get_addr
= 2;
7178 case R_PPC64_TPREL64
:
7182 || !toc_ref
[rel
->r_offset
/ 8])
7187 tls_set
= TLS_EXPLICIT
;
7188 tls_clear
= TLS_TPREL
;
7193 case R_PPC64_DTPMOD64
:
7197 || !toc_ref
[rel
->r_offset
/ 8])
7199 if (rel
+ 1 < relend
7201 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7202 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7206 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7209 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7218 tls_set
= TLS_EXPLICIT
;
7229 if (!expecting_tls_get_addr
7230 || !sec
->has_tls_get_addr_call
)
7233 if (rel
+ 1 < relend
7234 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7236 htab
->tls_get_addr_fd
))
7238 if (expecting_tls_get_addr
== 2)
7240 /* Check for toc tls entries. */
7244 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7249 if (retval
> 1 && toc_tls
!= NULL
)
7250 toc_ref
[toc_ref_index
] = 1;
7255 if (expecting_tls_get_addr
!= 1)
7258 /* Uh oh, we didn't find the expected call. We
7259 could just mark this symbol to exclude it
7260 from tls optimization but it's safer to skip
7261 the entire section. */
7262 sec
->has_tls_reloc
= 0;
7266 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7268 struct plt_entry
*ent
;
7269 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7272 if (ent
->addend
== 0)
7274 if (ent
->plt
.refcount
> 0)
7276 ent
->plt
.refcount
-= 1;
7277 expecting_tls_get_addr
= 0;
7283 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7285 struct plt_entry
*ent
;
7286 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7289 if (ent
->addend
== 0)
7291 if (ent
->plt
.refcount
> 0)
7292 ent
->plt
.refcount
-= 1;
7300 if ((tls_set
& TLS_EXPLICIT
) == 0)
7302 struct got_entry
*ent
;
7304 /* Adjust got entry for this reloc. */
7308 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7310 for (; ent
!= NULL
; ent
= ent
->next
)
7311 if (ent
->addend
== rel
->r_addend
7312 && ent
->owner
== ibfd
7313 && ent
->tls_type
== tls_type
)
7320 /* We managed to get rid of a got entry. */
7321 if (ent
->got
.refcount
> 0)
7322 ent
->got
.refcount
-= 1;
7327 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7328 we'll lose one or two dyn relocs. */
7329 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7333 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7335 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7341 *tls_mask
|= tls_set
;
7342 *tls_mask
&= ~tls_clear
;
7345 if (elf_section_data (sec
)->relocs
!= relstart
)
7349 if (toc_ref
!= NULL
)
7353 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7355 if (!info
->keep_memory
)
7358 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7364 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7365 the values of any global symbols in a toc section that has been
7366 edited. Globals in toc sections should be a rarity, so this function
7367 sets a flag if any are found in toc sections other than the one just
7368 edited, so that futher hash table traversals can be avoided. */
7370 struct adjust_toc_info
7373 unsigned long *skip
;
7374 bfd_boolean global_toc_syms
;
7378 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7380 struct ppc_link_hash_entry
*eh
;
7381 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7383 if (h
->root
.type
== bfd_link_hash_indirect
)
7386 if (h
->root
.type
== bfd_link_hash_warning
)
7387 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7389 if (h
->root
.type
!= bfd_link_hash_defined
7390 && h
->root
.type
!= bfd_link_hash_defweak
)
7393 eh
= (struct ppc_link_hash_entry
*) h
;
7394 if (eh
->adjust_done
)
7397 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7399 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7400 if (skip
!= (unsigned long) -1)
7401 eh
->elf
.root
.u
.def
.value
-= skip
;
7404 (*_bfd_error_handler
)
7405 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7406 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7407 eh
->elf
.root
.u
.def
.value
= 0;
7409 eh
->adjust_done
= 1;
7411 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7412 toc_inf
->global_toc_syms
= TRUE
;
7417 /* Examine all relocs referencing .toc sections in order to remove
7418 unused .toc entries. */
7421 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7424 struct adjust_toc_info toc_inf
;
7426 toc_inf
.global_toc_syms
= TRUE
;
7427 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7429 asection
*toc
, *sec
;
7430 Elf_Internal_Shdr
*symtab_hdr
;
7431 Elf_Internal_Sym
*local_syms
;
7432 struct elf_link_hash_entry
**sym_hashes
;
7433 Elf_Internal_Rela
*relstart
, *rel
;
7434 unsigned long *skip
, *drop
;
7435 unsigned char *used
;
7436 unsigned char *keep
, last
, some_unused
;
7438 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7441 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7442 || elf_discarded_section (toc
))
7446 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7447 sym_hashes
= elf_sym_hashes (ibfd
);
7449 /* Look at sections dropped from the final link. */
7452 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7454 if (sec
->reloc_count
== 0
7455 || !elf_discarded_section (sec
)
7456 || get_opd_info (sec
)
7457 || (sec
->flags
& SEC_ALLOC
) == 0
7458 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7461 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7462 if (relstart
== NULL
)
7465 /* Run through the relocs to see which toc entries might be
7467 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7469 enum elf_ppc64_reloc_type r_type
;
7470 unsigned long r_symndx
;
7472 struct elf_link_hash_entry
*h
;
7473 Elf_Internal_Sym
*sym
;
7476 r_type
= ELF64_R_TYPE (rel
->r_info
);
7483 case R_PPC64_TOC16_LO
:
7484 case R_PPC64_TOC16_HI
:
7485 case R_PPC64_TOC16_HA
:
7486 case R_PPC64_TOC16_DS
:
7487 case R_PPC64_TOC16_LO_DS
:
7491 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7492 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7500 val
= h
->root
.u
.def
.value
;
7502 val
= sym
->st_value
;
7503 val
+= rel
->r_addend
;
7505 if (val
>= toc
->size
)
7508 /* Anything in the toc ought to be aligned to 8 bytes.
7509 If not, don't mark as unused. */
7515 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7523 if (elf_section_data (sec
)->relocs
!= relstart
)
7530 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7534 if (local_syms
!= NULL
7535 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7539 && elf_section_data (sec
)->relocs
!= relstart
)
7546 /* Now check all kept sections that might reference the toc.
7547 Check the toc itself last. */
7548 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
7551 sec
= (sec
== toc
? NULL
7552 : sec
->next
== NULL
? toc
7553 : sec
->next
== toc
&& toc
->next
? toc
->next
7558 if (sec
->reloc_count
== 0
7559 || elf_discarded_section (sec
)
7560 || get_opd_info (sec
)
7561 || (sec
->flags
& SEC_ALLOC
) == 0
7562 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7565 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7566 if (relstart
== NULL
)
7569 /* Mark toc entries referenced as used. */
7572 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7574 enum elf_ppc64_reloc_type r_type
;
7575 unsigned long r_symndx
;
7577 struct elf_link_hash_entry
*h
;
7578 Elf_Internal_Sym
*sym
;
7581 r_type
= ELF64_R_TYPE (rel
->r_info
);
7585 case R_PPC64_TOC16_LO
:
7586 case R_PPC64_TOC16_HI
:
7587 case R_PPC64_TOC16_HA
:
7588 case R_PPC64_TOC16_DS
:
7589 case R_PPC64_TOC16_LO_DS
:
7590 /* In case we're taking addresses of toc entries. */
7591 case R_PPC64_ADDR64
:
7598 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7599 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7610 val
= h
->root
.u
.def
.value
;
7612 val
= sym
->st_value
;
7613 val
+= rel
->r_addend
;
7615 if (val
>= toc
->size
)
7618 /* For the toc section, we only mark as used if
7619 this entry itself isn't unused. */
7622 && (used
[rel
->r_offset
>> 3]
7623 || !skip
[rel
->r_offset
>> 3]))
7624 /* Do all the relocs again, to catch reference
7633 /* Merge the used and skip arrays. Assume that TOC
7634 doublewords not appearing as either used or unused belong
7635 to to an entry more than one doubleword in size. */
7636 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7637 drop
< skip
+ (toc
->size
+ 7) / 8;
7658 bfd_byte
*contents
, *src
;
7661 /* Shuffle the toc contents, and at the same time convert the
7662 skip array from booleans into offsets. */
7663 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7666 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7668 for (src
= contents
, off
= 0, drop
= skip
;
7669 src
< contents
+ toc
->size
;
7674 *drop
= (unsigned long) -1;
7680 memcpy (src
- off
, src
, 8);
7683 toc
->rawsize
= toc
->size
;
7684 toc
->size
= src
- contents
- off
;
7686 if (toc
->reloc_count
!= 0)
7688 Elf_Internal_Rela
*wrel
;
7691 /* Read toc relocs. */
7692 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7694 if (relstart
== NULL
)
7697 /* Remove unused toc relocs, and adjust those we keep. */
7699 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7700 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7702 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7703 wrel
->r_info
= rel
->r_info
;
7704 wrel
->r_addend
= rel
->r_addend
;
7707 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7708 &local_syms
, NULL
, NULL
))
7711 toc
->reloc_count
= wrel
- relstart
;
7712 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7713 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7714 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7717 /* Adjust addends for relocs against the toc section sym. */
7718 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7720 if (sec
->reloc_count
== 0
7721 || elf_discarded_section (sec
))
7724 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7726 if (relstart
== NULL
)
7729 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7731 enum elf_ppc64_reloc_type r_type
;
7732 unsigned long r_symndx
;
7734 struct elf_link_hash_entry
*h
;
7735 Elf_Internal_Sym
*sym
;
7737 r_type
= ELF64_R_TYPE (rel
->r_info
);
7744 case R_PPC64_TOC16_LO
:
7745 case R_PPC64_TOC16_HI
:
7746 case R_PPC64_TOC16_HA
:
7747 case R_PPC64_TOC16_DS
:
7748 case R_PPC64_TOC16_LO_DS
:
7749 case R_PPC64_ADDR64
:
7753 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7754 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7758 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7761 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7765 /* We shouldn't have local or global symbols defined in the TOC,
7766 but handle them anyway. */
7767 if (local_syms
!= NULL
)
7769 Elf_Internal_Sym
*sym
;
7771 for (sym
= local_syms
;
7772 sym
< local_syms
+ symtab_hdr
->sh_info
;
7774 if (sym
->st_value
!= 0
7775 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7777 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7778 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7781 (*_bfd_error_handler
)
7782 (_("%s defined in removed toc entry"),
7783 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7786 sym
->st_shndx
= SHN_ABS
;
7788 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7792 /* Finally, adjust any global syms defined in the toc. */
7793 if (toc_inf
.global_toc_syms
)
7796 toc_inf
.skip
= skip
;
7797 toc_inf
.global_toc_syms
= FALSE
;
7798 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7803 if (local_syms
!= NULL
7804 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7806 if (!info
->keep_memory
)
7809 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7817 /* Allocate space in .plt, .got and associated reloc sections for
7821 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7823 struct bfd_link_info
*info
;
7824 struct ppc_link_hash_table
*htab
;
7826 struct ppc_link_hash_entry
*eh
;
7827 struct ppc_dyn_relocs
*p
;
7828 struct got_entry
*gent
;
7830 if (h
->root
.type
== bfd_link_hash_indirect
)
7833 if (h
->root
.type
== bfd_link_hash_warning
)
7834 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7836 info
= (struct bfd_link_info
*) inf
;
7837 htab
= ppc_hash_table (info
);
7839 if (htab
->elf
.dynamic_sections_created
7841 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7843 struct plt_entry
*pent
;
7844 bfd_boolean doneone
= FALSE
;
7845 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7846 if (pent
->plt
.refcount
> 0)
7848 /* If this is the first .plt entry, make room for the special
7852 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7854 pent
->plt
.offset
= s
->size
;
7856 /* Make room for this entry. */
7857 s
->size
+= PLT_ENTRY_SIZE
;
7859 /* Make room for the .glink code. */
7862 s
->size
+= GLINK_CALL_STUB_SIZE
;
7863 /* We need bigger stubs past index 32767. */
7864 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7868 /* We also need to make an entry in the .rela.plt section. */
7870 s
->size
+= sizeof (Elf64_External_Rela
);
7874 pent
->plt
.offset
= (bfd_vma
) -1;
7877 h
->plt
.plist
= NULL
;
7883 h
->plt
.plist
= NULL
;
7887 eh
= (struct ppc_link_hash_entry
*) h
;
7888 /* Run through the TLS GD got entries first if we're changing them
7890 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7891 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7892 if (gent
->got
.refcount
> 0
7893 && (gent
->tls_type
& TLS_GD
) != 0)
7895 /* This was a GD entry that has been converted to TPREL. If
7896 there happens to be a TPREL entry we can use that one. */
7897 struct got_entry
*ent
;
7898 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7899 if (ent
->got
.refcount
> 0
7900 && (ent
->tls_type
& TLS_TPREL
) != 0
7901 && ent
->addend
== gent
->addend
7902 && ent
->owner
== gent
->owner
)
7904 gent
->got
.refcount
= 0;
7908 /* If not, then we'll be using our own TPREL entry. */
7909 if (gent
->got
.refcount
!= 0)
7910 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7913 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7914 if (gent
->got
.refcount
> 0)
7918 /* Make sure this symbol is output as a dynamic symbol.
7919 Undefined weak syms won't yet be marked as dynamic,
7920 nor will all TLS symbols. */
7921 if (h
->dynindx
== -1
7923 && htab
->elf
.dynamic_sections_created
)
7925 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7929 if ((gent
->tls_type
& TLS_LD
) != 0
7932 ppc64_tlsld_got (gent
->owner
)->refcount
+= 1;
7933 gent
->got
.offset
= (bfd_vma
) -1;
7937 if (!is_ppc64_elf (gent
->owner
))
7940 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7941 gent
->got
.offset
= s
->size
;
7943 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7944 dyn
= htab
->elf
.dynamic_sections_created
;
7946 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7947 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7948 || h
->root
.type
!= bfd_link_hash_undefweak
))
7949 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7950 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7951 ? 2 * sizeof (Elf64_External_Rela
)
7952 : sizeof (Elf64_External_Rela
));
7955 gent
->got
.offset
= (bfd_vma
) -1;
7957 if (eh
->dyn_relocs
== NULL
7958 || !htab
->elf
.dynamic_sections_created
)
7961 /* In the shared -Bsymbolic case, discard space allocated for
7962 dynamic pc-relative relocs against symbols which turn out to be
7963 defined in regular objects. For the normal shared case, discard
7964 space for relocs that have become local due to symbol visibility
7969 /* Relocs that use pc_count are those that appear on a call insn,
7970 or certain REL relocs (see must_be_dyn_reloc) that can be
7971 generated via assembly. We want calls to protected symbols to
7972 resolve directly to the function rather than going via the plt.
7973 If people want function pointer comparisons to work as expected
7974 then they should avoid writing weird assembly. */
7975 if (SYMBOL_CALLS_LOCAL (info
, h
))
7977 struct ppc_dyn_relocs
**pp
;
7979 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7981 p
->count
-= p
->pc_count
;
7990 /* Also discard relocs on undefined weak syms with non-default
7992 if (eh
->dyn_relocs
!= NULL
7993 && h
->root
.type
== bfd_link_hash_undefweak
)
7995 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7996 eh
->dyn_relocs
= NULL
;
7998 /* Make sure this symbol is output as a dynamic symbol.
7999 Undefined weak syms won't yet be marked as dynamic. */
8000 else if (h
->dynindx
== -1
8001 && !h
->forced_local
)
8003 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8008 else if (ELIMINATE_COPY_RELOCS
)
8010 /* For the non-shared case, discard space for relocs against
8011 symbols which turn out to need copy relocs or are not
8017 /* Make sure this symbol is output as a dynamic symbol.
8018 Undefined weak syms won't yet be marked as dynamic. */
8019 if (h
->dynindx
== -1
8020 && !h
->forced_local
)
8022 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8026 /* If that succeeded, we know we'll be keeping all the
8028 if (h
->dynindx
!= -1)
8032 eh
->dyn_relocs
= NULL
;
8037 /* Finally, allocate space. */
8038 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8040 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8041 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8047 /* Find any dynamic relocs that apply to read-only sections. */
8050 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8052 struct ppc_link_hash_entry
*eh
;
8053 struct ppc_dyn_relocs
*p
;
8055 if (h
->root
.type
== bfd_link_hash_warning
)
8056 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8058 eh
= (struct ppc_link_hash_entry
*) h
;
8059 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8061 asection
*s
= p
->sec
->output_section
;
8063 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8065 struct bfd_link_info
*info
= inf
;
8067 info
->flags
|= DF_TEXTREL
;
8069 /* Not an error, just cut short the traversal. */
8076 /* Set the sizes of the dynamic sections. */
8079 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8080 struct bfd_link_info
*info
)
8082 struct ppc_link_hash_table
*htab
;
8088 htab
= ppc_hash_table (info
);
8089 dynobj
= htab
->elf
.dynobj
;
8093 if (htab
->elf
.dynamic_sections_created
)
8095 /* Set the contents of the .interp section to the interpreter. */
8096 if (info
->executable
)
8098 s
= bfd_get_section_by_name (dynobj
, ".interp");
8101 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8102 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8106 /* Set up .got offsets for local syms, and space for local dynamic
8108 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8110 struct got_entry
**lgot_ents
;
8111 struct got_entry
**end_lgot_ents
;
8113 bfd_size_type locsymcount
;
8114 Elf_Internal_Shdr
*symtab_hdr
;
8117 if (!is_ppc64_elf (ibfd
))
8120 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8122 struct ppc_dyn_relocs
*p
;
8124 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8126 if (!bfd_is_abs_section (p
->sec
)
8127 && bfd_is_abs_section (p
->sec
->output_section
))
8129 /* Input section has been discarded, either because
8130 it is a copy of a linkonce section or due to
8131 linker script /DISCARD/, so we'll be discarding
8134 else if (p
->count
!= 0)
8136 srel
= elf_section_data (p
->sec
)->sreloc
;
8137 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8138 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8139 info
->flags
|= DF_TEXTREL
;
8144 lgot_ents
= elf_local_got_ents (ibfd
);
8148 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8149 locsymcount
= symtab_hdr
->sh_info
;
8150 end_lgot_ents
= lgot_ents
+ locsymcount
;
8151 lgot_masks
= (char *) end_lgot_ents
;
8152 s
= ppc64_elf_tdata (ibfd
)->got
;
8153 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8154 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8156 struct got_entry
*ent
;
8158 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
8159 if (ent
->got
.refcount
> 0)
8161 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8163 ppc64_tlsld_got (ibfd
)->refcount
+= 1;
8164 ent
->got
.offset
= (bfd_vma
) -1;
8168 ent
->got
.offset
= s
->size
;
8169 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8173 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
8179 srel
->size
+= sizeof (Elf64_External_Rela
);
8184 ent
->got
.offset
= (bfd_vma
) -1;
8188 /* Allocate global sym .plt and .got entries, and space for global
8189 sym dynamic relocs. */
8190 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8192 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8194 if (!is_ppc64_elf (ibfd
))
8197 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
8199 s
= ppc64_elf_tdata (ibfd
)->got
;
8200 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
8204 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8205 srel
->size
+= sizeof (Elf64_External_Rela
);
8209 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
8212 /* We now have determined the sizes of the various dynamic sections.
8213 Allocate memory for them. */
8215 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8217 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8220 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
8221 /* These haven't been allocated yet; don't strip. */
8223 else if (s
== htab
->got
8226 || s
== htab
->dynbss
)
8228 /* Strip this section if we don't need it; see the
8231 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8235 if (s
!= htab
->relplt
)
8238 /* We use the reloc_count field as a counter if we need
8239 to copy relocs into the output file. */
8245 /* It's not one of our sections, so don't allocate space. */
8251 /* If we don't need this section, strip it from the
8252 output file. This is mostly to handle .rela.bss and
8253 .rela.plt. We must create both sections in
8254 create_dynamic_sections, because they must be created
8255 before the linker maps input sections to output
8256 sections. The linker does that before
8257 adjust_dynamic_symbol is called, and it is that
8258 function which decides whether anything needs to go
8259 into these sections. */
8260 s
->flags
|= SEC_EXCLUDE
;
8264 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8267 /* Allocate memory for the section contents. We use bfd_zalloc
8268 here in case unused entries are not reclaimed before the
8269 section's contents are written out. This should not happen,
8270 but this way if it does we get a R_PPC64_NONE reloc in .rela
8271 sections instead of garbage.
8272 We also rely on the section contents being zero when writing
8274 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8275 if (s
->contents
== NULL
)
8279 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8281 if (!is_ppc64_elf (ibfd
))
8284 s
= ppc64_elf_tdata (ibfd
)->got
;
8285 if (s
!= NULL
&& s
!= htab
->got
)
8288 s
->flags
|= SEC_EXCLUDE
;
8291 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8292 if (s
->contents
== NULL
)
8296 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8300 s
->flags
|= SEC_EXCLUDE
;
8303 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8304 if (s
->contents
== NULL
)
8312 if (htab
->elf
.dynamic_sections_created
)
8314 /* Add some entries to the .dynamic section. We fill in the
8315 values later, in ppc64_elf_finish_dynamic_sections, but we
8316 must add the entries now so that we get the correct size for
8317 the .dynamic section. The DT_DEBUG entry is filled in by the
8318 dynamic linker and used by the debugger. */
8319 #define add_dynamic_entry(TAG, VAL) \
8320 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8322 if (info
->executable
)
8324 if (!add_dynamic_entry (DT_DEBUG
, 0))
8328 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8330 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8331 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8332 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8333 || !add_dynamic_entry (DT_JMPREL
, 0)
8334 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8340 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8341 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8347 if (!add_dynamic_entry (DT_RELA
, 0)
8348 || !add_dynamic_entry (DT_RELASZ
, 0)
8349 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8352 /* If any dynamic relocs apply to a read-only section,
8353 then we need a DT_TEXTREL entry. */
8354 if ((info
->flags
& DF_TEXTREL
) == 0)
8355 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8357 if ((info
->flags
& DF_TEXTREL
) != 0)
8359 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8364 #undef add_dynamic_entry
8369 /* Determine the type of stub needed, if any, for a call. */
8371 static inline enum ppc_stub_type
8372 ppc_type_of_stub (asection
*input_sec
,
8373 const Elf_Internal_Rela
*rel
,
8374 struct ppc_link_hash_entry
**hash
,
8375 bfd_vma destination
)
8377 struct ppc_link_hash_entry
*h
= *hash
;
8379 bfd_vma branch_offset
;
8380 bfd_vma max_branch_offset
;
8381 enum elf_ppc64_reloc_type r_type
;
8385 struct ppc_link_hash_entry
*fdh
= h
;
8387 && fdh
->oh
->is_func_descriptor
)
8390 if (fdh
->elf
.dynindx
!= -1)
8392 struct plt_entry
*ent
;
8394 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8395 if (ent
->addend
== rel
->r_addend
8396 && ent
->plt
.offset
!= (bfd_vma
) -1)
8399 return ppc_stub_plt_call
;
8403 /* Here, we know we don't have a plt entry. If we don't have a
8404 either a defined function descriptor or a defined entry symbol
8405 in a regular object file, then it is pointless trying to make
8406 any other type of stub. */
8407 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8408 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8409 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8410 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8411 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8412 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8413 return ppc_stub_none
;
8416 /* Determine where the call point is. */
8417 location
= (input_sec
->output_offset
8418 + input_sec
->output_section
->vma
8421 branch_offset
= destination
- location
;
8422 r_type
= ELF64_R_TYPE (rel
->r_info
);
8424 /* Determine if a long branch stub is needed. */
8425 max_branch_offset
= 1 << 25;
8426 if (r_type
!= R_PPC64_REL24
)
8427 max_branch_offset
= 1 << 15;
8429 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8430 /* We need a stub. Figure out whether a long_branch or plt_branch
8432 return ppc_stub_long_branch
;
8434 return ppc_stub_none
;
8437 /* Build a .plt call stub. */
8439 static inline bfd_byte
*
8440 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
8442 #define PPC_LO(v) ((v) & 0xffff)
8443 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8444 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8446 if (PPC_HA (offset
) != 0)
8450 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
8451 r
[1].r_offset
= r
[0].r_offset
+ 8;
8452 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8453 r
[1].r_addend
= r
[0].r_addend
;
8454 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8456 r
[2].r_offset
= r
[1].r_offset
+ 4;
8457 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
8458 r
[2].r_addend
= r
[0].r_addend
;
8462 r
[2].r_offset
= r
[1].r_offset
+ 8;
8463 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8464 r
[2].r_addend
= r
[0].r_addend
+ 8;
8465 r
[3].r_offset
= r
[2].r_offset
+ 4;
8466 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8467 r
[3].r_addend
= r
[0].r_addend
+ 16;
8470 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
8471 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8472 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8473 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8475 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
8478 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8479 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
8480 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
8481 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8488 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8489 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8491 r
[1].r_offset
= r
[0].r_offset
+ 4;
8492 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
8493 r
[1].r_addend
= r
[0].r_addend
;
8497 r
[1].r_offset
= r
[0].r_offset
+ 8;
8498 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8499 r
[1].r_addend
= r
[0].r_addend
+ 16;
8500 r
[2].r_offset
= r
[1].r_offset
+ 4;
8501 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8502 r
[2].r_addend
= r
[0].r_addend
+ 8;
8505 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8506 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
8507 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8509 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
8512 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8513 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
8514 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
8515 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8520 static Elf_Internal_Rela
*
8521 get_relocs (asection
*sec
, int count
)
8523 Elf_Internal_Rela
*relocs
;
8524 struct bfd_elf_section_data
*elfsec_data
;
8526 elfsec_data
= elf_section_data (sec
);
8527 relocs
= elfsec_data
->relocs
;
8530 bfd_size_type relsize
;
8531 relsize
= sec
->reloc_count
* sizeof (*relocs
);
8532 relocs
= bfd_alloc (sec
->owner
, relsize
);
8535 elfsec_data
->relocs
= relocs
;
8536 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
8537 * sizeof (Elf64_External_Rela
));
8538 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
8539 sec
->reloc_count
= 0;
8541 relocs
+= sec
->reloc_count
;
8542 sec
->reloc_count
+= count
;
8547 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8549 struct ppc_stub_hash_entry
*stub_entry
;
8550 struct ppc_branch_hash_entry
*br_entry
;
8551 struct bfd_link_info
*info
;
8552 struct ppc_link_hash_table
*htab
;
8555 struct plt_entry
*ent
;
8558 Elf_Internal_Rela
*r
;
8560 /* Massage our args to the form they really have. */
8561 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8564 htab
= ppc_hash_table (info
);
8566 /* Make a note of the offset within the stubs for this entry. */
8567 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
8568 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
8570 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
8571 switch (stub_entry
->stub_type
)
8573 case ppc_stub_long_branch
:
8574 case ppc_stub_long_branch_r2off
:
8575 /* Branches are relative. This is where we are going to. */
8576 off
= dest
= (stub_entry
->target_value
8577 + stub_entry
->target_section
->output_offset
8578 + stub_entry
->target_section
->output_section
->vma
);
8580 /* And this is where we are coming from. */
8581 off
-= (stub_entry
->stub_offset
8582 + stub_entry
->stub_sec
->output_offset
8583 + stub_entry
->stub_sec
->output_section
->vma
);
8586 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8590 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8591 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8592 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8595 if (PPC_HA (r2off
) != 0)
8598 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8601 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8605 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8607 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8609 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
8610 stub_entry
->root
.string
);
8611 htab
->stub_error
= TRUE
;
8615 if (info
->emitrelocations
)
8617 r
= get_relocs (stub_entry
->stub_sec
, 1);
8620 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8621 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8623 if (stub_entry
->h
!= NULL
)
8625 struct elf_link_hash_entry
**hashes
;
8626 unsigned long symndx
;
8627 struct ppc_link_hash_entry
*h
;
8629 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8632 bfd_size_type hsize
;
8634 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8635 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8638 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8639 htab
->stub_globals
= 1;
8641 symndx
= htab
->stub_globals
++;
8643 hashes
[symndx
] = &h
->elf
;
8644 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8645 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8647 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8648 /* H is an opd symbol. The addend must be zero. */
8652 off
= (h
->elf
.root
.u
.def
.value
8653 + h
->elf
.root
.u
.def
.section
->output_offset
8654 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8661 case ppc_stub_plt_branch
:
8662 case ppc_stub_plt_branch_r2off
:
8663 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8664 stub_entry
->root
.string
+ 9,
8666 if (br_entry
== NULL
)
8668 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8669 stub_entry
->root
.string
);
8670 htab
->stub_error
= TRUE
;
8674 dest
= (stub_entry
->target_value
8675 + stub_entry
->target_section
->output_offset
8676 + stub_entry
->target_section
->output_section
->vma
);
8678 bfd_put_64 (htab
->brlt
->owner
, dest
,
8679 htab
->brlt
->contents
+ br_entry
->offset
);
8681 if (br_entry
->iter
== htab
->stub_iteration
)
8685 if (htab
->relbrlt
!= NULL
)
8687 /* Create a reloc for the branch lookup table entry. */
8688 Elf_Internal_Rela rela
;
8691 rela
.r_offset
= (br_entry
->offset
8692 + htab
->brlt
->output_offset
8693 + htab
->brlt
->output_section
->vma
);
8694 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8695 rela
.r_addend
= dest
;
8697 rl
= htab
->relbrlt
->contents
;
8698 rl
+= (htab
->relbrlt
->reloc_count
++
8699 * sizeof (Elf64_External_Rela
));
8700 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8702 else if (info
->emitrelocations
)
8704 r
= get_relocs (htab
->brlt
, 1);
8707 /* brlt, being SEC_LINKER_CREATED does not go through the
8708 normal reloc processing. Symbols and offsets are not
8709 translated from input file to output file form, so
8710 set up the offset per the output file. */
8711 r
->r_offset
= (br_entry
->offset
8712 + htab
->brlt
->output_offset
8713 + htab
->brlt
->output_section
->vma
);
8714 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8719 dest
= (br_entry
->offset
8720 + htab
->brlt
->output_offset
8721 + htab
->brlt
->output_section
->vma
);
8724 - elf_gp (htab
->brlt
->output_section
->owner
)
8725 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8727 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8729 (*_bfd_error_handler
)
8730 (_("linkage table error against `%s'"),
8731 stub_entry
->root
.string
);
8732 bfd_set_error (bfd_error_bad_value
);
8733 htab
->stub_error
= TRUE
;
8737 if (info
->emitrelocations
)
8739 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
8742 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8743 if (bfd_big_endian (info
->output_bfd
))
8745 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
8747 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8748 r
[0].r_addend
= dest
;
8749 if (PPC_HA (off
) != 0)
8751 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
8752 r
[1].r_offset
= r
[0].r_offset
+ 4;
8753 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8754 r
[1].r_addend
= r
[0].r_addend
;
8758 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8760 if (PPC_HA (off
) != 0)
8763 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
8765 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
8770 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
8777 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8778 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8779 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8782 if (PPC_HA (off
) != 0)
8785 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
8787 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
8792 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
8796 if (PPC_HA (r2off
) != 0)
8799 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8802 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8805 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8807 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8810 case ppc_stub_plt_call
:
8811 /* Do the best we can for shared libraries built without
8812 exporting ".foo" for each "foo". This can happen when symbol
8813 versioning scripts strip all bar a subset of symbols. */
8814 if (stub_entry
->h
->oh
!= NULL
8815 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8816 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8818 /* Point the symbol at the stub. There may be multiple stubs,
8819 we don't really care; The main thing is to make this sym
8820 defined somewhere. Maybe defining the symbol in the stub
8821 section is a silly idea. If we didn't do this, htab->top_id
8823 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8824 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8825 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8828 /* Now build the stub. */
8829 dest
= (bfd_vma
) -1;
8830 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8831 if (ent
->addend
== stub_entry
->addend
)
8833 dest
= ent
->plt
.offset
;
8836 if (dest
>= (bfd_vma
) -2)
8839 dest
&= ~ (bfd_vma
) 1;
8840 dest
+= (htab
->plt
->output_offset
8841 + htab
->plt
->output_section
->vma
);
8844 - elf_gp (htab
->plt
->output_section
->owner
)
8845 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8847 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8849 (*_bfd_error_handler
)
8850 (_("linkage table error against `%s'"),
8851 stub_entry
->h
->elf
.root
.root
.string
);
8852 bfd_set_error (bfd_error_bad_value
);
8853 htab
->stub_error
= TRUE
;
8858 if (info
->emitrelocations
)
8860 r
= get_relocs (stub_entry
->stub_sec
,
8861 (2 + (PPC_HA (off
) != 0)
8862 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
8865 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8866 if (bfd_big_endian (info
->output_bfd
))
8868 r
[0].r_addend
= dest
;
8870 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
8879 stub_entry
->stub_sec
->size
+= size
;
8881 if (htab
->emit_stub_syms
)
8883 struct elf_link_hash_entry
*h
;
8886 const char *const stub_str
[] = { "long_branch",
8887 "long_branch_r2off",
8892 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8893 len2
= strlen (stub_entry
->root
.string
);
8894 name
= bfd_malloc (len1
+ len2
+ 2);
8897 memcpy (name
, stub_entry
->root
.string
, 9);
8898 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8899 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8900 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8903 if (h
->root
.type
== bfd_link_hash_new
)
8905 h
->root
.type
= bfd_link_hash_defined
;
8906 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8907 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8910 h
->ref_regular_nonweak
= 1;
8911 h
->forced_local
= 1;
8919 /* As above, but don't actually build the stub. Just bump offset so
8920 we know stub section sizes, and select plt_branch stubs where
8921 long_branch stubs won't do. */
8924 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8926 struct ppc_stub_hash_entry
*stub_entry
;
8927 struct bfd_link_info
*info
;
8928 struct ppc_link_hash_table
*htab
;
8932 /* Massage our args to the form they really have. */
8933 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8936 htab
= ppc_hash_table (info
);
8938 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8940 struct plt_entry
*ent
;
8942 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8943 if (ent
->addend
== stub_entry
->addend
)
8945 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8948 if (off
>= (bfd_vma
) -2)
8950 off
+= (htab
->plt
->output_offset
8951 + htab
->plt
->output_section
->vma
8952 - elf_gp (htab
->plt
->output_section
->owner
)
8953 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8955 size
= PLT_CALL_STUB_SIZE
;
8956 if (PPC_HA (off
) == 0)
8958 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8960 if (info
->emitrelocations
)
8962 stub_entry
->stub_sec
->reloc_count
8963 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
8964 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
8969 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8973 off
= (stub_entry
->target_value
8974 + stub_entry
->target_section
->output_offset
8975 + stub_entry
->target_section
->output_section
->vma
);
8976 off
-= (stub_entry
->stub_sec
->size
8977 + stub_entry
->stub_sec
->output_offset
8978 + stub_entry
->stub_sec
->output_section
->vma
);
8980 /* Reset the stub type from the plt variant in case we now
8981 can reach with a shorter stub. */
8982 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8983 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8986 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8988 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8989 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8991 if (PPC_HA (r2off
) != 0)
8996 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8997 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8999 struct ppc_branch_hash_entry
*br_entry
;
9001 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9002 stub_entry
->root
.string
+ 9,
9004 if (br_entry
== NULL
)
9006 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9007 stub_entry
->root
.string
);
9008 htab
->stub_error
= TRUE
;
9012 if (br_entry
->iter
!= htab
->stub_iteration
)
9014 br_entry
->iter
= htab
->stub_iteration
;
9015 br_entry
->offset
= htab
->brlt
->size
;
9016 htab
->brlt
->size
+= 8;
9018 if (htab
->relbrlt
!= NULL
)
9019 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9020 else if (info
->emitrelocations
)
9022 htab
->brlt
->reloc_count
+= 1;
9023 htab
->brlt
->flags
|= SEC_RELOC
;
9027 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9028 off
= (br_entry
->offset
9029 + htab
->brlt
->output_offset
9030 + htab
->brlt
->output_section
->vma
9031 - elf_gp (htab
->brlt
->output_section
->owner
)
9032 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9034 if (info
->emitrelocations
)
9036 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9037 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9040 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9043 if (PPC_HA (off
) != 0)
9049 if (PPC_HA (off
) != 0)
9052 if (PPC_HA (r2off
) != 0)
9056 else if (info
->emitrelocations
)
9058 stub_entry
->stub_sec
->reloc_count
+= 1;
9059 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9063 stub_entry
->stub_sec
->size
+= size
;
9067 /* Set up various things so that we can make a list of input sections
9068 for each output section included in the link. Returns -1 on error,
9069 0 when no stubs will be needed, and 1 on success. */
9072 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
9073 struct bfd_link_info
*info
,
9077 int top_id
, top_index
, id
;
9079 asection
**input_list
;
9081 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9083 htab
->no_multi_toc
= no_multi_toc
;
9085 if (htab
->brlt
== NULL
)
9088 /* Find the top input section id. */
9089 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9091 input_bfd
= input_bfd
->link_next
)
9093 for (section
= input_bfd
->sections
;
9095 section
= section
->next
)
9097 if (top_id
< section
->id
)
9098 top_id
= section
->id
;
9102 htab
->top_id
= top_id
;
9103 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9104 htab
->stub_group
= bfd_zmalloc (amt
);
9105 if (htab
->stub_group
== NULL
)
9108 /* Set toc_off for com, und, abs and ind sections. */
9109 for (id
= 0; id
< 3; id
++)
9110 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9112 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
9114 /* We can't use output_bfd->section_count here to find the top output
9115 section index as some sections may have been removed, and
9116 strip_excluded_output_sections doesn't renumber the indices. */
9117 for (section
= output_bfd
->sections
, top_index
= 0;
9119 section
= section
->next
)
9121 if (top_index
< section
->index
)
9122 top_index
= section
->index
;
9125 htab
->top_index
= top_index
;
9126 amt
= sizeof (asection
*) * (top_index
+ 1);
9127 input_list
= bfd_zmalloc (amt
);
9128 htab
->input_list
= input_list
;
9129 if (input_list
== NULL
)
9135 /* The linker repeatedly calls this function for each TOC input section
9136 and linker generated GOT section. Group input bfds such that the toc
9137 within a group is less than 64k in size. Will break with cute linker
9138 scripts that play games with dot in the output toc section. */
9141 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
9143 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9145 if (!htab
->no_multi_toc
)
9147 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
9148 bfd_vma off
= addr
- htab
->toc_curr
;
9150 if (off
+ isec
->size
> 0x10000)
9151 htab
->toc_curr
= addr
;
9153 elf_gp (isec
->owner
) = (htab
->toc_curr
9154 - elf_gp (isec
->output_section
->owner
)
9159 /* Called after the last call to the above function. */
9162 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
9164 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9166 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
9168 /* toc_curr tracks the TOC offset used for code sections below in
9169 ppc64_elf_next_input_section. Start off at 0x8000. */
9170 htab
->toc_curr
= TOC_BASE_OFF
;
9173 /* No toc references were found in ISEC. If the code in ISEC makes no
9174 calls, then there's no need to use toc adjusting stubs when branching
9175 into ISEC. Actually, indirect calls from ISEC are OK as they will
9176 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9177 needed, and 2 if a cyclical call-graph was found but no other reason
9178 for a stub was detected. If called from the top level, a return of
9179 2 means the same as a return of 0. */
9182 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
9184 Elf_Internal_Rela
*relstart
, *rel
;
9185 Elf_Internal_Sym
*local_syms
;
9187 struct ppc_link_hash_table
*htab
;
9189 /* We know none of our code bearing sections will need toc stubs. */
9190 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
9193 if (isec
->size
== 0)
9196 if (isec
->output_section
== NULL
)
9199 if (isec
->reloc_count
== 0)
9202 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
9204 if (relstart
== NULL
)
9207 /* Look for branches to outside of this section. */
9210 htab
= ppc_hash_table (info
);
9211 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
9213 enum elf_ppc64_reloc_type r_type
;
9214 unsigned long r_symndx
;
9215 struct elf_link_hash_entry
*h
;
9216 struct ppc_link_hash_entry
*eh
;
9217 Elf_Internal_Sym
*sym
;
9219 struct _opd_sec_data
*opd
;
9223 r_type
= ELF64_R_TYPE (rel
->r_info
);
9224 if (r_type
!= R_PPC64_REL24
9225 && r_type
!= R_PPC64_REL14
9226 && r_type
!= R_PPC64_REL14_BRTAKEN
9227 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9230 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9231 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
9238 /* Calls to dynamic lib functions go through a plt call stub
9240 eh
= (struct ppc_link_hash_entry
*) h
;
9242 && (eh
->elf
.plt
.plist
!= NULL
9244 && eh
->oh
->elf
.plt
.plist
!= NULL
)))
9250 if (sym_sec
== NULL
)
9251 /* Ignore other undefined symbols. */
9254 /* Assume branches to other sections not included in the link need
9255 stubs too, to cover -R and absolute syms. */
9256 if (sym_sec
->output_section
== NULL
)
9263 sym_value
= sym
->st_value
;
9266 if (h
->root
.type
!= bfd_link_hash_defined
9267 && h
->root
.type
!= bfd_link_hash_defweak
)
9269 sym_value
= h
->root
.u
.def
.value
;
9271 sym_value
+= rel
->r_addend
;
9273 /* If this branch reloc uses an opd sym, find the code section. */
9274 opd
= get_opd_info (sym_sec
);
9277 if (h
== NULL
&& opd
->adjust
!= NULL
)
9281 adjust
= opd
->adjust
[sym
->st_value
/ 8];
9283 /* Assume deleted functions won't ever be called. */
9285 sym_value
+= adjust
;
9288 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
9289 if (dest
== (bfd_vma
) -1)
9294 + sym_sec
->output_offset
9295 + sym_sec
->output_section
->vma
);
9297 /* Ignore branch to self. */
9298 if (sym_sec
== isec
)
9301 /* If the called function uses the toc, we need a stub. */
9302 if (sym_sec
->has_toc_reloc
9303 || sym_sec
->makes_toc_func_call
)
9309 /* Assume any branch that needs a long branch stub might in fact
9310 need a plt_branch stub. A plt_branch stub uses r2. */
9311 else if (dest
- (isec
->output_offset
9312 + isec
->output_section
->vma
9313 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
9319 /* If calling back to a section in the process of being tested, we
9320 can't say for sure that no toc adjusting stubs are needed, so
9321 don't return zero. */
9322 else if (sym_sec
->call_check_in_progress
)
9325 /* Branches to another section that itself doesn't have any TOC
9326 references are OK. Recursively call ourselves to check. */
9327 else if (sym_sec
->id
<= htab
->top_id
9328 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
9332 /* Mark current section as indeterminate, so that other
9333 sections that call back to current won't be marked as
9335 isec
->call_check_in_progress
= 1;
9336 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
9337 isec
->call_check_in_progress
= 0;
9341 /* An error. Exit. */
9345 else if (recur
<= 1)
9347 /* Known result. Mark as checked and set section flag. */
9348 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
9351 sym_sec
->makes_toc_func_call
= 1;
9358 /* Unknown result. Continue checking. */
9364 if (local_syms
!= NULL
9365 && (elf_symtab_hdr (isec
->owner
).contents
!= (unsigned char *) local_syms
))
9367 if (elf_section_data (isec
)->relocs
!= relstart
)
9373 /* The linker repeatedly calls this function for each input section,
9374 in the order that input sections are linked into output sections.
9375 Build lists of input sections to determine groupings between which
9376 we may insert linker stubs. */
9379 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
9381 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9383 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
9384 && isec
->output_section
->index
<= htab
->top_index
)
9386 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
9387 /* Steal the link_sec pointer for our list. */
9388 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
9389 /* This happens to make the list in reverse order,
9390 which is what we want. */
9391 PREV_SEC (isec
) = *list
;
9395 if (htab
->multi_toc_needed
)
9397 /* If a code section has a function that uses the TOC then we need
9398 to use the right TOC (obviously). Also, make sure that .opd gets
9399 the correct TOC value for R_PPC64_TOC relocs that don't have or
9400 can't find their function symbol (shouldn't ever happen now).
9401 Also specially treat .fixup for the linux kernel. .fixup
9402 contains branches, but only back to the function that hit an
9404 if (isec
->has_toc_reloc
9405 || (isec
->flags
& SEC_CODE
) == 0
9406 || strcmp (isec
->name
, ".fixup") == 0)
9408 if (elf_gp (isec
->owner
) != 0)
9409 htab
->toc_curr
= elf_gp (isec
->owner
);
9411 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
9413 int ret
= toc_adjusting_stub_needed (info
, isec
);
9417 isec
->makes_toc_func_call
= ret
& 1;
9421 /* Functions that don't use the TOC can belong in any TOC group.
9422 Use the last TOC base. This happens to make _init and _fini
9424 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
9428 /* See whether we can group stub sections together. Grouping stub
9429 sections may result in fewer stubs. More importantly, we need to
9430 put all .init* and .fini* stubs at the beginning of the .init or
9431 .fini output sections respectively, because glibc splits the
9432 _init and _fini functions into multiple parts. Putting a stub in
9433 the middle of a function is not a good idea. */
9436 group_sections (struct ppc_link_hash_table
*htab
,
9437 bfd_size_type stub_group_size
,
9438 bfd_boolean stubs_always_before_branch
)
9441 bfd_size_type stub14_group_size
;
9442 bfd_boolean suppress_size_errors
;
9444 suppress_size_errors
= FALSE
;
9445 stub14_group_size
= stub_group_size
;
9446 if (stub_group_size
== 1)
9448 /* Default values. */
9449 if (stubs_always_before_branch
)
9451 stub_group_size
= 0x1e00000;
9452 stub14_group_size
= 0x7800;
9456 stub_group_size
= 0x1c00000;
9457 stub14_group_size
= 0x7000;
9459 suppress_size_errors
= TRUE
;
9462 list
= htab
->input_list
+ htab
->top_index
;
9465 asection
*tail
= *list
;
9466 while (tail
!= NULL
)
9470 bfd_size_type total
;
9471 bfd_boolean big_sec
;
9476 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
9477 ? stub14_group_size
: stub_group_size
);
9478 if (big_sec
&& !suppress_size_errors
)
9479 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
9481 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
9483 while ((prev
= PREV_SEC (curr
)) != NULL
9484 && ((total
+= curr
->output_offset
- prev
->output_offset
)
9485 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9486 ? stub14_group_size
: stub_group_size
))
9487 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9490 /* OK, the size from the start of CURR to the end is less
9491 than stub_group_size and thus can be handled by one stub
9492 section. (or the tail section is itself larger than
9493 stub_group_size, in which case we may be toast.) We
9494 should really be keeping track of the total size of stubs
9495 added here, as stubs contribute to the final output
9496 section size. That's a little tricky, and this way will
9497 only break if stubs added make the total size more than
9498 2^25, ie. for the default stub_group_size, if stubs total
9499 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9502 prev
= PREV_SEC (tail
);
9503 /* Set up this stub group. */
9504 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9506 while (tail
!= curr
&& (tail
= prev
) != NULL
);
9508 /* But wait, there's more! Input sections up to stub_group_size
9509 bytes before the stub section can be handled by it too.
9510 Don't do this if we have a really large section after the
9511 stubs, as adding more stubs increases the chance that
9512 branches may not reach into the stub section. */
9513 if (!stubs_always_before_branch
&& !big_sec
)
9517 && ((total
+= tail
->output_offset
- prev
->output_offset
)
9518 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9519 ? stub14_group_size
: stub_group_size
))
9520 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9523 prev
= PREV_SEC (tail
);
9524 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9530 while (list
-- != htab
->input_list
);
9531 free (htab
->input_list
);
9535 /* Determine and set the size of the stub section for a final link.
9537 The basic idea here is to examine all the relocations looking for
9538 PC-relative calls to a target that is unreachable with a "bl"
9542 ppc64_elf_size_stubs (bfd
*output_bfd
,
9543 struct bfd_link_info
*info
,
9544 bfd_signed_vma group_size
,
9545 asection
*(*add_stub_section
) (const char *, asection
*),
9546 void (*layout_sections_again
) (void))
9548 bfd_size_type stub_group_size
;
9549 bfd_boolean stubs_always_before_branch
;
9550 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9552 /* Stash our params away. */
9553 htab
->add_stub_section
= add_stub_section
;
9554 htab
->layout_sections_again
= layout_sections_again
;
9555 stubs_always_before_branch
= group_size
< 0;
9557 stub_group_size
= -group_size
;
9559 stub_group_size
= group_size
;
9561 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
9566 unsigned int bfd_indx
;
9569 htab
->stub_iteration
+= 1;
9571 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
9573 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
9575 Elf_Internal_Shdr
*symtab_hdr
;
9577 Elf_Internal_Sym
*local_syms
= NULL
;
9579 if (!is_ppc64_elf (input_bfd
))
9582 /* We'll need the symbol table in a second. */
9583 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
9584 if (symtab_hdr
->sh_info
== 0)
9587 /* Walk over each section attached to the input bfd. */
9588 for (section
= input_bfd
->sections
;
9590 section
= section
->next
)
9592 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
9594 /* If there aren't any relocs, then there's nothing more
9596 if ((section
->flags
& SEC_RELOC
) == 0
9597 || (section
->flags
& SEC_ALLOC
) == 0
9598 || (section
->flags
& SEC_LOAD
) == 0
9599 || (section
->flags
& SEC_CODE
) == 0
9600 || section
->reloc_count
== 0)
9603 /* If this section is a link-once section that will be
9604 discarded, then don't create any stubs. */
9605 if (section
->output_section
== NULL
9606 || section
->output_section
->owner
!= output_bfd
)
9609 /* Get the relocs. */
9611 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
9613 if (internal_relocs
== NULL
)
9614 goto error_ret_free_local
;
9616 /* Now examine each relocation. */
9617 irela
= internal_relocs
;
9618 irelaend
= irela
+ section
->reloc_count
;
9619 for (; irela
< irelaend
; irela
++)
9621 enum elf_ppc64_reloc_type r_type
;
9622 unsigned int r_indx
;
9623 enum ppc_stub_type stub_type
;
9624 struct ppc_stub_hash_entry
*stub_entry
;
9625 asection
*sym_sec
, *code_sec
;
9627 bfd_vma destination
;
9628 bfd_boolean ok_dest
;
9629 struct ppc_link_hash_entry
*hash
;
9630 struct ppc_link_hash_entry
*fdh
;
9631 struct elf_link_hash_entry
*h
;
9632 Elf_Internal_Sym
*sym
;
9634 const asection
*id_sec
;
9635 struct _opd_sec_data
*opd
;
9637 r_type
= ELF64_R_TYPE (irela
->r_info
);
9638 r_indx
= ELF64_R_SYM (irela
->r_info
);
9640 if (r_type
>= R_PPC64_max
)
9642 bfd_set_error (bfd_error_bad_value
);
9643 goto error_ret_free_internal
;
9646 /* Only look for stubs on branch instructions. */
9647 if (r_type
!= R_PPC64_REL24
9648 && r_type
!= R_PPC64_REL14
9649 && r_type
!= R_PPC64_REL14_BRTAKEN
9650 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9653 /* Now determine the call target, its name, value,
9655 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9657 goto error_ret_free_internal
;
9658 hash
= (struct ppc_link_hash_entry
*) h
;
9665 sym_value
= sym
->st_value
;
9668 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
9669 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
9671 sym_value
= hash
->elf
.root
.u
.def
.value
;
9672 if (sym_sec
->output_section
!= NULL
)
9675 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
9676 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
9678 /* Recognise an old ABI func code entry sym, and
9679 use the func descriptor sym instead if it is
9681 if (hash
->elf
.root
.root
.string
[0] == '.'
9682 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
9684 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
9685 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
9687 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
9688 sym_value
= fdh
->elf
.root
.u
.def
.value
;
9689 if (sym_sec
->output_section
!= NULL
)
9698 bfd_set_error (bfd_error_bad_value
);
9699 goto error_ret_free_internal
;
9705 sym_value
+= irela
->r_addend
;
9706 destination
= (sym_value
9707 + sym_sec
->output_offset
9708 + sym_sec
->output_section
->vma
);
9712 opd
= get_opd_info (sym_sec
);
9717 if (hash
== NULL
&& opd
->adjust
!= NULL
)
9719 long adjust
= opd
->adjust
[sym_value
/ 8];
9722 sym_value
+= adjust
;
9724 dest
= opd_entry_value (sym_sec
, sym_value
,
9725 &code_sec
, &sym_value
);
9726 if (dest
!= (bfd_vma
) -1)
9731 /* Fixup old ABI sym to point at code
9733 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9734 hash
->elf
.root
.u
.def
.section
= code_sec
;
9735 hash
->elf
.root
.u
.def
.value
= sym_value
;
9740 /* Determine what (if any) linker stub is needed. */
9741 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9744 if (stub_type
!= ppc_stub_plt_call
)
9746 /* Check whether we need a TOC adjusting stub.
9747 Since the linker pastes together pieces from
9748 different object files when creating the
9749 _init and _fini functions, it may be that a
9750 call to what looks like a local sym is in
9751 fact a call needing a TOC adjustment. */
9752 if (code_sec
!= NULL
9753 && code_sec
->output_section
!= NULL
9754 && (htab
->stub_group
[code_sec
->id
].toc_off
9755 != htab
->stub_group
[section
->id
].toc_off
)
9756 && (code_sec
->has_toc_reloc
9757 || code_sec
->makes_toc_func_call
))
9758 stub_type
= ppc_stub_long_branch_r2off
;
9761 if (stub_type
== ppc_stub_none
)
9764 /* __tls_get_addr calls might be eliminated. */
9765 if (stub_type
!= ppc_stub_plt_call
9767 && (hash
== htab
->tls_get_addr
9768 || hash
== htab
->tls_get_addr_fd
)
9769 && section
->has_tls_reloc
9770 && irela
!= internal_relocs
)
9775 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
9776 irela
- 1, input_bfd
))
9777 goto error_ret_free_internal
;
9782 /* Support for grouping stub sections. */
9783 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9785 /* Get the name of this stub. */
9786 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9788 goto error_ret_free_internal
;
9790 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9791 stub_name
, FALSE
, FALSE
);
9792 if (stub_entry
!= NULL
)
9794 /* The proper stub has already been created. */
9799 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9800 if (stub_entry
== NULL
)
9803 error_ret_free_internal
:
9804 if (elf_section_data (section
)->relocs
== NULL
)
9805 free (internal_relocs
);
9806 error_ret_free_local
:
9807 if (local_syms
!= NULL
9808 && (symtab_hdr
->contents
9809 != (unsigned char *) local_syms
))
9814 stub_entry
->stub_type
= stub_type
;
9815 stub_entry
->target_value
= sym_value
;
9816 stub_entry
->target_section
= code_sec
;
9817 stub_entry
->h
= hash
;
9818 stub_entry
->addend
= irela
->r_addend
;
9820 if (stub_entry
->h
!= NULL
)
9821 htab
->stub_globals
+= 1;
9824 /* We're done with the internal relocs, free them. */
9825 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9826 free (internal_relocs
);
9829 if (local_syms
!= NULL
9830 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9832 if (!info
->keep_memory
)
9835 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9839 /* We may have added some stubs. Find out the new size of the
9841 for (stub_sec
= htab
->stub_bfd
->sections
;
9843 stub_sec
= stub_sec
->next
)
9844 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9846 stub_sec
->rawsize
= stub_sec
->size
;
9848 stub_sec
->reloc_count
= 0;
9849 stub_sec
->flags
&= ~SEC_RELOC
;
9852 htab
->brlt
->size
= 0;
9853 htab
->brlt
->reloc_count
= 0;
9854 htab
->brlt
->flags
&= ~SEC_RELOC
;
9855 if (htab
->relbrlt
!= NULL
)
9856 htab
->relbrlt
->size
= 0;
9858 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9860 if (info
->emitrelocations
9861 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
9863 htab
->glink
->reloc_count
= 1;
9864 htab
->glink
->flags
|= SEC_RELOC
;
9867 for (stub_sec
= htab
->stub_bfd
->sections
;
9869 stub_sec
= stub_sec
->next
)
9870 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9871 && stub_sec
->rawsize
!= stub_sec
->size
)
9874 /* Exit from this loop when no stubs have been added, and no stubs
9875 have changed size. */
9876 if (stub_sec
== NULL
)
9879 /* Ask the linker to do its stuff. */
9880 (*htab
->layout_sections_again
) ();
9883 /* It would be nice to strip htab->brlt from the output if the
9884 section is empty, but it's too late. If we strip sections here,
9885 the dynamic symbol table is corrupted since the section symbol
9886 for the stripped section isn't written. */
9891 /* Called after we have determined section placement. If sections
9892 move, we'll be called again. Provide a value for TOCstart. */
9895 ppc64_elf_toc (bfd
*obfd
)
9900 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9901 order. The TOC starts where the first of these sections starts. */
9902 s
= bfd_get_section_by_name (obfd
, ".got");
9904 s
= bfd_get_section_by_name (obfd
, ".toc");
9906 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9908 s
= bfd_get_section_by_name (obfd
, ".plt");
9911 /* This may happen for
9912 o references to TOC base (SYM@toc / TOC[tc0]) without a
9915 o --gc-sections and empty TOC sections
9917 FIXME: Warn user? */
9919 /* Look for a likely section. We probably won't even be
9921 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9922 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9923 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9926 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9927 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9928 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9931 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9932 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9935 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9936 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9942 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9947 /* Build all the stubs associated with the current output file.
9948 The stubs are kept in a hash table attached to the main linker
9949 hash table. This function is called via gldelf64ppc_finish. */
9952 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9953 struct bfd_link_info
*info
,
9956 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9959 int stub_sec_count
= 0;
9961 htab
->emit_stub_syms
= emit_stub_syms
;
9963 /* Allocate memory to hold the linker stubs. */
9964 for (stub_sec
= htab
->stub_bfd
->sections
;
9966 stub_sec
= stub_sec
->next
)
9967 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9968 && stub_sec
->size
!= 0)
9970 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9971 if (stub_sec
->contents
== NULL
)
9973 /* We want to check that built size is the same as calculated
9974 size. rawsize is a convenient location to use. */
9975 stub_sec
->rawsize
= stub_sec
->size
;
9979 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
9984 /* Build the .glink plt call stub. */
9985 if (htab
->emit_stub_syms
)
9987 struct elf_link_hash_entry
*h
;
9988 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
9989 TRUE
, FALSE
, FALSE
);
9992 if (h
->root
.type
== bfd_link_hash_new
)
9994 h
->root
.type
= bfd_link_hash_defined
;
9995 h
->root
.u
.def
.section
= htab
->glink
;
9996 h
->root
.u
.def
.value
= 8;
9999 h
->ref_regular_nonweak
= 1;
10000 h
->forced_local
= 1;
10004 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
10005 if (info
->emitrelocations
)
10007 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
10010 r
->r_offset
= (htab
->glink
->output_offset
10011 + htab
->glink
->output_section
->vma
);
10012 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
10013 r
->r_addend
= plt0
;
10015 p
= htab
->glink
->contents
;
10016 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
10017 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
10019 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
10021 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
10023 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
10025 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
10027 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
10029 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
10031 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
10033 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
10035 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
10037 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
10039 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
10041 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
10043 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
10047 /* Build the .glink lazy link call stubs. */
10049 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
10053 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
10058 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
10060 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
10063 bfd_put_32 (htab
->glink
->owner
,
10064 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
10068 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
10071 if (htab
->brlt
->size
!= 0)
10073 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
10075 if (htab
->brlt
->contents
== NULL
)
10078 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
10080 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
10081 htab
->relbrlt
->size
);
10082 if (htab
->relbrlt
->contents
== NULL
)
10086 /* Build the stubs as directed by the stub hash table. */
10087 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
10089 if (htab
->relbrlt
!= NULL
)
10090 htab
->relbrlt
->reloc_count
= 0;
10092 for (stub_sec
= htab
->stub_bfd
->sections
;
10094 stub_sec
= stub_sec
->next
)
10095 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10097 stub_sec_count
+= 1;
10098 if (stub_sec
->rawsize
!= stub_sec
->size
)
10102 if (stub_sec
!= NULL
10103 || htab
->glink
->rawsize
!= htab
->glink
->size
)
10105 htab
->stub_error
= TRUE
;
10106 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
10109 if (htab
->stub_error
)
10114 *stats
= bfd_malloc (500);
10115 if (*stats
== NULL
)
10118 sprintf (*stats
, _("linker stubs in %u group%s\n"
10120 " toc adjust %lu\n"
10121 " long branch %lu\n"
10122 " long toc adj %lu\n"
10125 stub_sec_count
== 1 ? "" : "s",
10126 htab
->stub_count
[ppc_stub_long_branch
- 1],
10127 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
10128 htab
->stub_count
[ppc_stub_plt_branch
- 1],
10129 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
10130 htab
->stub_count
[ppc_stub_plt_call
- 1]);
10135 /* This function undoes the changes made by add_symbol_adjust. */
10138 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10140 struct ppc_link_hash_entry
*eh
;
10142 if (h
->root
.type
== bfd_link_hash_indirect
)
10145 if (h
->root
.type
== bfd_link_hash_warning
)
10146 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10148 eh
= (struct ppc_link_hash_entry
*) h
;
10149 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
10152 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
10157 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
10159 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10160 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
10163 /* What to do when ld finds relocations against symbols defined in
10164 discarded sections. */
10166 static unsigned int
10167 ppc64_elf_action_discarded (asection
*sec
)
10169 if (strcmp (".opd", sec
->name
) == 0)
10172 if (strcmp (".toc", sec
->name
) == 0)
10175 if (strcmp (".toc1", sec
->name
) == 0)
10178 return _bfd_elf_default_action_discarded (sec
);
10181 /* The RELOCATE_SECTION function is called by the ELF backend linker
10182 to handle the relocations for a section.
10184 The relocs are always passed as Rela structures; if the section
10185 actually uses Rel structures, the r_addend field will always be
10188 This function is responsible for adjust the section contents as
10189 necessary, and (if using Rela relocs and generating a
10190 relocatable output file) adjusting the reloc addend as
10193 This function does not have to worry about setting the reloc
10194 address or the reloc symbol index.
10196 LOCAL_SYMS is a pointer to the swapped in local symbols.
10198 LOCAL_SECTIONS is an array giving the section in the input file
10199 corresponding to the st_shndx field of each local symbol.
10201 The global hash table entry for the global symbols can be found
10202 via elf_sym_hashes (input_bfd).
10204 When generating relocatable output, this function must handle
10205 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10206 going to be the section symbol corresponding to the output
10207 section, which means that the addend must be adjusted
10211 ppc64_elf_relocate_section (bfd
*output_bfd
,
10212 struct bfd_link_info
*info
,
10214 asection
*input_section
,
10215 bfd_byte
*contents
,
10216 Elf_Internal_Rela
*relocs
,
10217 Elf_Internal_Sym
*local_syms
,
10218 asection
**local_sections
)
10220 struct ppc_link_hash_table
*htab
;
10221 Elf_Internal_Shdr
*symtab_hdr
;
10222 struct elf_link_hash_entry
**sym_hashes
;
10223 Elf_Internal_Rela
*rel
;
10224 Elf_Internal_Rela
*relend
;
10225 Elf_Internal_Rela outrel
;
10227 struct got_entry
**local_got_ents
;
10229 bfd_boolean ret
= TRUE
;
10230 bfd_boolean is_opd
;
10231 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
10232 bfd_boolean is_power4
= FALSE
;
10233 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
10235 /* Initialize howto table if needed. */
10236 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
10239 htab
= ppc_hash_table (info
);
10241 /* Don't relocate stub sections. */
10242 if (input_section
->owner
== htab
->stub_bfd
)
10245 BFD_ASSERT (is_ppc64_elf (input_bfd
));
10247 local_got_ents
= elf_local_got_ents (input_bfd
);
10248 TOCstart
= elf_gp (output_bfd
);
10249 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10250 sym_hashes
= elf_sym_hashes (input_bfd
);
10251 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
10254 relend
= relocs
+ input_section
->reloc_count
;
10255 for (; rel
< relend
; rel
++)
10257 enum elf_ppc64_reloc_type r_type
;
10258 bfd_vma addend
, orig_addend
;
10259 bfd_reloc_status_type r
;
10260 Elf_Internal_Sym
*sym
;
10262 struct elf_link_hash_entry
*h_elf
;
10263 struct ppc_link_hash_entry
*h
;
10264 struct ppc_link_hash_entry
*fdh
;
10265 const char *sym_name
;
10266 unsigned long r_symndx
, toc_symndx
;
10267 bfd_vma toc_addend
;
10268 char tls_mask
, tls_gd
, tls_type
;
10270 bfd_vma relocation
;
10271 bfd_boolean unresolved_reloc
;
10272 bfd_boolean warned
;
10273 unsigned long insn
, mask
;
10274 struct ppc_stub_hash_entry
*stub_entry
;
10275 bfd_vma max_br_offset
;
10278 r_type
= ELF64_R_TYPE (rel
->r_info
);
10279 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10281 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10282 symbol of the previous ADDR64 reloc. The symbol gives us the
10283 proper TOC base to use. */
10284 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
10286 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
10288 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
10294 unresolved_reloc
= FALSE
;
10296 orig_addend
= rel
->r_addend
;
10298 if (r_symndx
< symtab_hdr
->sh_info
)
10300 /* It's a local symbol. */
10301 struct _opd_sec_data
*opd
;
10303 sym
= local_syms
+ r_symndx
;
10304 sec
= local_sections
[r_symndx
];
10305 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
10306 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
10307 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
10308 opd
= get_opd_info (sec
);
10309 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
10311 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
10316 /* If this is a relocation against the opd section sym
10317 and we have edited .opd, adjust the reloc addend so
10318 that ld -r and ld --emit-relocs output is correct.
10319 If it is a reloc against some other .opd symbol,
10320 then the symbol value will be adjusted later. */
10321 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
10322 rel
->r_addend
+= adjust
;
10324 relocation
+= adjust
;
10330 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
10331 r_symndx
, symtab_hdr
, sym_hashes
,
10332 h_elf
, sec
, relocation
,
10333 unresolved_reloc
, warned
);
10334 sym_name
= h_elf
->root
.root
.string
;
10335 sym_type
= h_elf
->type
;
10337 h
= (struct ppc_link_hash_entry
*) h_elf
;
10339 if (sec
!= NULL
&& elf_discarded_section (sec
))
10341 /* For relocs against symbols from removed linkonce sections,
10342 or sections discarded by a linker script, we just want the
10343 section contents zeroed. Avoid any special processing. */
10344 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
10345 contents
+ rel
->r_offset
);
10351 if (info
->relocatable
)
10354 /* TLS optimizations. Replace instruction sequences and relocs
10355 based on information we collected in tls_optimize. We edit
10356 RELOCS so that --emit-relocs will output something sensible
10357 for the final instruction stream. */
10362 tls_mask
= h
->tls_mask
;
10363 else if (local_got_ents
!= NULL
)
10366 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
10367 tls_mask
= lgot_masks
[r_symndx
];
10370 && (r_type
== R_PPC64_TLS
10371 || r_type
== R_PPC64_TLSGD
10372 || r_type
== R_PPC64_TLSLD
))
10374 /* Check for toc tls entries. */
10377 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10378 &local_syms
, rel
, input_bfd
))
10382 tls_mask
= *toc_tls
;
10385 /* Check that tls relocs are used with tls syms, and non-tls
10386 relocs are used with non-tls syms. */
10388 && r_type
!= R_PPC64_NONE
10390 || h
->elf
.root
.type
== bfd_link_hash_defined
10391 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
10392 && (IS_PPC64_TLS_RELOC (r_type
)
10393 != (sym_type
== STT_TLS
10394 || (sym_type
== STT_SECTION
10395 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
10398 && (r_type
== R_PPC64_TLS
10399 || r_type
== R_PPC64_TLSGD
10400 || r_type
== R_PPC64_TLSLD
))
10401 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10404 (*_bfd_error_handler
)
10405 (!IS_PPC64_TLS_RELOC (r_type
)
10406 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10407 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10410 (long) rel
->r_offset
,
10411 ppc64_elf_howto_table
[r_type
]->name
,
10415 /* Ensure reloc mapping code below stays sane. */
10416 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
10417 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
10418 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
10419 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
10420 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
10421 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
10422 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
10423 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
10424 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
10425 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
10433 case R_PPC64_TOC16
:
10434 case R_PPC64_TOC16_LO
:
10435 case R_PPC64_TOC16_DS
:
10436 case R_PPC64_TOC16_LO_DS
:
10438 /* Check for toc tls entries. */
10442 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10443 &local_syms
, rel
, input_bfd
);
10449 tls_mask
= *toc_tls
;
10450 if (r_type
== R_PPC64_TOC16_DS
10451 || r_type
== R_PPC64_TOC16_LO_DS
)
10454 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
10459 /* If we found a GD reloc pair, then we might be
10460 doing a GD->IE transition. */
10463 tls_gd
= TLS_TPRELGD
;
10464 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10467 else if (retval
== 3)
10469 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10477 case R_PPC64_GOT_TPREL16_DS
:
10478 case R_PPC64_GOT_TPREL16_LO_DS
:
10480 && (tls_mask
& TLS_TPREL
) == 0)
10483 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
10485 insn
|= 0x3c0d0000; /* addis 0,13,0 */
10486 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
10487 r_type
= R_PPC64_TPREL16_HA
;
10488 if (toc_symndx
!= 0)
10490 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10491 rel
->r_addend
= toc_addend
;
10492 /* We changed the symbol. Start over in order to
10493 get h, sym, sec etc. right. */
10498 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10504 && (tls_mask
& TLS_TPREL
) == 0)
10507 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
10508 if ((insn
& ((0x3f << 26) | (31 << 11)))
10509 == ((31 << 26) | (13 << 11)))
10510 rtra
= insn
& ((1 << 26) - (1 << 16));
10511 else if ((insn
& ((0x3f << 26) | (31 << 16)))
10512 == ((31 << 26) | (13 << 16)))
10513 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
10516 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
10519 else if ((insn
& (31 << 1)) == 23 << 1
10520 && ((insn
& (31 << 6)) < 14 << 6
10521 || ((insn
& (31 << 6)) >= 16 << 6
10522 && (insn
& (31 << 6)) < 24 << 6)))
10523 /* load and store indexed -> dform. */
10524 insn
= (32 | ((insn
>> 6) & 31)) << 26;
10525 else if ((insn
& (31 << 1)) == 21 << 1
10526 && (insn
& (0x1a << 6)) == 0)
10527 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10528 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
10529 | ((insn
>> 6) & 1));
10530 else if ((insn
& (31 << 1)) == 21 << 1
10531 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
10533 insn
= (58 << 26) | 2;
10537 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10538 /* Was PPC64_TLS which sits on insn boundary, now
10539 PPC64_TPREL16_LO which is at low-order half-word. */
10540 rel
->r_offset
+= d_offset
;
10541 r_type
= R_PPC64_TPREL16_LO
;
10542 if (toc_symndx
!= 0)
10544 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10545 rel
->r_addend
= toc_addend
;
10546 /* We changed the symbol. Start over in order to
10547 get h, sym, sec etc. right. */
10552 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10556 case R_PPC64_GOT_TLSGD16_HI
:
10557 case R_PPC64_GOT_TLSGD16_HA
:
10558 tls_gd
= TLS_TPRELGD
;
10559 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10563 case R_PPC64_GOT_TLSLD16_HI
:
10564 case R_PPC64_GOT_TLSLD16_HA
:
10565 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10568 if ((tls_mask
& tls_gd
) != 0)
10569 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10570 + R_PPC64_GOT_TPREL16_DS
);
10573 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10574 rel
->r_offset
-= d_offset
;
10575 r_type
= R_PPC64_NONE
;
10577 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10581 case R_PPC64_GOT_TLSGD16
:
10582 case R_PPC64_GOT_TLSGD16_LO
:
10583 tls_gd
= TLS_TPRELGD
;
10584 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10588 case R_PPC64_GOT_TLSLD16
:
10589 case R_PPC64_GOT_TLSLD16_LO
:
10590 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10592 unsigned int insn1
, insn2
, insn3
;
10596 offset
= (bfd_vma
) -1;
10597 /* If not using the newer R_PPC64_TLSGD/LD to mark
10598 __tls_get_addr calls, we must trust that the call
10599 stays with its arg setup insns, ie. that the next
10600 reloc is the __tls_get_addr call associated with
10601 the current reloc. Edit both insns. */
10602 if (input_section
->has_tls_get_addr_call
10603 && rel
+ 1 < relend
10604 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
10605 htab
->tls_get_addr
,
10606 htab
->tls_get_addr_fd
))
10607 offset
= rel
[1].r_offset
;
10608 if ((tls_mask
& tls_gd
) != 0)
10611 insn1
= bfd_get_32 (output_bfd
,
10612 contents
+ rel
->r_offset
- d_offset
);
10613 insn1
&= (1 << 26) - (1 << 2);
10614 insn1
|= 58 << 26; /* ld */
10615 insn2
= 0x7c636a14; /* add 3,3,13 */
10616 if (offset
!= (bfd_vma
) -1)
10617 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10619 if ((tls_mask
& TLS_EXPLICIT
) == 0)
10620 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10621 + R_PPC64_GOT_TPREL16_DS
);
10623 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
10624 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10629 insn1
= 0x3c6d0000; /* addis 3,13,0 */
10630 insn2
= 0x38630000; /* addi 3,3,0 */
10633 /* Was an LD reloc. */
10635 sec
= local_sections
[toc_symndx
];
10637 r_symndx
< symtab_hdr
->sh_info
;
10639 if (local_sections
[r_symndx
] == sec
)
10641 if (r_symndx
>= symtab_hdr
->sh_info
)
10643 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10645 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
10646 + sec
->output_offset
10647 + sec
->output_section
->vma
);
10649 else if (toc_symndx
!= 0)
10651 r_symndx
= toc_symndx
;
10652 rel
->r_addend
= toc_addend
;
10654 r_type
= R_PPC64_TPREL16_HA
;
10655 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10656 if (offset
!= (bfd_vma
) -1)
10658 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
10659 R_PPC64_TPREL16_LO
);
10660 rel
[1].r_offset
= offset
+ d_offset
;
10661 rel
[1].r_addend
= rel
->r_addend
;
10664 bfd_put_32 (output_bfd
, insn1
,
10665 contents
+ rel
->r_offset
- d_offset
);
10666 if (offset
!= (bfd_vma
) -1)
10668 insn3
= bfd_get_32 (output_bfd
,
10669 contents
+ offset
+ 4);
10671 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10673 rel
[1].r_offset
+= 4;
10674 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10677 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10679 if ((tls_mask
& tls_gd
) == 0
10680 && (tls_gd
== 0 || toc_symndx
!= 0))
10682 /* We changed the symbol. Start over in order
10683 to get h, sym, sec etc. right. */
10690 case R_PPC64_TLSGD
:
10691 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10693 unsigned int insn2
, insn3
;
10694 bfd_vma offset
= rel
->r_offset
;
10696 if ((tls_mask
& TLS_TPRELGD
) != 0)
10699 r_type
= R_PPC64_NONE
;
10700 insn2
= 0x7c636a14; /* add 3,3,13 */
10705 if (toc_symndx
!= 0)
10707 r_symndx
= toc_symndx
;
10708 rel
->r_addend
= toc_addend
;
10710 r_type
= R_PPC64_TPREL16_LO
;
10711 rel
->r_offset
= offset
+ d_offset
;
10712 insn2
= 0x38630000; /* addi 3,3,0 */
10714 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10715 /* Zap the reloc on the _tls_get_addr call too. */
10716 BFD_ASSERT (offset
== rel
[1].r_offset
);
10717 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10719 insn3
= bfd_get_32 (output_bfd
,
10720 contents
+ offset
+ 4);
10722 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10724 rel
->r_offset
+= 4;
10725 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10728 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10729 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
10737 case R_PPC64_TLSLD
:
10738 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10740 unsigned int insn2
, insn3
;
10741 bfd_vma offset
= rel
->r_offset
;
10744 sec
= local_sections
[toc_symndx
];
10746 r_symndx
< symtab_hdr
->sh_info
;
10748 if (local_sections
[r_symndx
] == sec
)
10750 if (r_symndx
>= symtab_hdr
->sh_info
)
10752 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10754 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
10755 + sec
->output_offset
10756 + sec
->output_section
->vma
);
10758 r_type
= R_PPC64_TPREL16_LO
;
10759 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10760 rel
->r_offset
= offset
+ d_offset
;
10761 /* Zap the reloc on the _tls_get_addr call too. */
10762 BFD_ASSERT (offset
== rel
[1].r_offset
);
10763 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10765 insn2
= 0x38630000; /* addi 3,3,0 */
10766 insn3
= bfd_get_32 (output_bfd
,
10767 contents
+ offset
+ 4);
10769 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10771 rel
->r_offset
+= 4;
10772 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10775 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10781 case R_PPC64_DTPMOD64
:
10782 if (rel
+ 1 < relend
10783 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
10784 && rel
[1].r_offset
== rel
->r_offset
+ 8)
10786 if ((tls_mask
& TLS_GD
) == 0)
10788 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
10789 if ((tls_mask
& TLS_TPRELGD
) != 0)
10790 r_type
= R_PPC64_TPREL64
;
10793 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10794 r_type
= R_PPC64_NONE
;
10796 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10801 if ((tls_mask
& TLS_LD
) == 0)
10803 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10804 r_type
= R_PPC64_NONE
;
10805 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10810 case R_PPC64_TPREL64
:
10811 if ((tls_mask
& TLS_TPREL
) == 0)
10813 r_type
= R_PPC64_NONE
;
10814 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10819 /* Handle other relocations that tweak non-addend part of insn. */
10821 max_br_offset
= 1 << 25;
10822 addend
= rel
->r_addend
;
10828 /* Branch taken prediction relocations. */
10829 case R_PPC64_ADDR14_BRTAKEN
:
10830 case R_PPC64_REL14_BRTAKEN
:
10831 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10834 /* Branch not taken prediction relocations. */
10835 case R_PPC64_ADDR14_BRNTAKEN
:
10836 case R_PPC64_REL14_BRNTAKEN
:
10837 insn
|= bfd_get_32 (output_bfd
,
10838 contents
+ rel
->r_offset
) & ~(0x01 << 21);
10841 case R_PPC64_REL14
:
10842 max_br_offset
= 1 << 15;
10845 case R_PPC64_REL24
:
10846 /* Calls to functions with a different TOC, such as calls to
10847 shared objects, need to alter the TOC pointer. This is
10848 done using a linkage stub. A REL24 branching to these
10849 linkage stubs needs to be followed by a nop, as the nop
10850 will be replaced with an instruction to restore the TOC
10855 && (((fdh
= h
->oh
) != NULL
10856 && fdh
->elf
.plt
.plist
!= NULL
)
10857 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
10859 && sec
->output_section
!= NULL
10860 && sec
->id
<= htab
->top_id
10861 && (htab
->stub_group
[sec
->id
].toc_off
10862 != htab
->stub_group
[input_section
->id
].toc_off
)))
10863 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
10864 rel
, htab
)) != NULL
10865 && (stub_entry
->stub_type
== ppc_stub_plt_call
10866 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
10867 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
10869 bfd_boolean can_plt_call
= FALSE
;
10871 if (rel
->r_offset
+ 8 <= input_section
->size
)
10874 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
10876 || nop
== CROR_151515
|| nop
== CROR_313131
)
10878 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10879 contents
+ rel
->r_offset
+ 4);
10880 can_plt_call
= TRUE
;
10886 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10888 /* If this is a plain branch rather than a branch
10889 and link, don't require a nop. However, don't
10890 allow tail calls in a shared library as they
10891 will result in r2 being corrupted. */
10893 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10894 if (info
->executable
&& (br
& 1) == 0)
10895 can_plt_call
= TRUE
;
10900 && strcmp (h
->elf
.root
.root
.string
,
10901 ".__libc_start_main") == 0)
10903 /* Allow crt1 branch to go via a toc adjusting stub. */
10904 can_plt_call
= TRUE
;
10908 if (strcmp (input_section
->output_section
->name
,
10910 || strcmp (input_section
->output_section
->name
,
10912 (*_bfd_error_handler
)
10913 (_("%B(%A+0x%lx): automatic multiple TOCs "
10914 "not supported using your crt files; "
10915 "recompile with -mminimal-toc or upgrade gcc"),
10918 (long) rel
->r_offset
);
10920 (*_bfd_error_handler
)
10921 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10922 "does not allow automatic multiple TOCs; "
10923 "recompile with -mminimal-toc or "
10924 "-fno-optimize-sibling-calls, "
10925 "or make `%s' extern"),
10928 (long) rel
->r_offset
,
10931 bfd_set_error (bfd_error_bad_value
);
10937 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10938 unresolved_reloc
= FALSE
;
10941 if (stub_entry
== NULL
10942 && get_opd_info (sec
) != NULL
)
10944 /* The branch destination is the value of the opd entry. */
10945 bfd_vma off
= (relocation
+ addend
10946 - sec
->output_section
->vma
10947 - sec
->output_offset
);
10948 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10949 if (dest
!= (bfd_vma
) -1)
10956 /* If the branch is out of reach we ought to have a long
10958 from
= (rel
->r_offset
10959 + input_section
->output_offset
10960 + input_section
->output_section
->vma
);
10962 if (stub_entry
== NULL
10963 && (relocation
+ addend
- from
+ max_br_offset
10964 >= 2 * max_br_offset
)
10965 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10966 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10967 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10970 if (stub_entry
!= NULL
)
10972 /* Munge up the value and addend so that we call the stub
10973 rather than the procedure directly. */
10974 relocation
= (stub_entry
->stub_offset
10975 + stub_entry
->stub_sec
->output_offset
10976 + stub_entry
->stub_sec
->output_section
->vma
);
10984 /* Set 'a' bit. This is 0b00010 in BO field for branch
10985 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10986 for branch on CTR insns (BO == 1a00t or 1a01t). */
10987 if ((insn
& (0x14 << 21)) == (0x04 << 21))
10988 insn
|= 0x02 << 21;
10989 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
10990 insn
|= 0x08 << 21;
10996 /* Invert 'y' bit if not the default. */
10997 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
10998 insn
^= 0x01 << 21;
11001 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11004 /* NOP out calls to undefined weak functions.
11005 We can thus call a weak function without first
11006 checking whether the function is defined. */
11008 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11009 && r_type
== R_PPC64_REL24
11013 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11019 /* Set `addend'. */
11024 (*_bfd_error_handler
)
11025 (_("%B: unknown relocation type %d for symbol %s"),
11026 input_bfd
, (int) r_type
, sym_name
);
11028 bfd_set_error (bfd_error_bad_value
);
11034 case R_PPC64_TLSGD
:
11035 case R_PPC64_TLSLD
:
11036 case R_PPC64_GNU_VTINHERIT
:
11037 case R_PPC64_GNU_VTENTRY
:
11040 /* GOT16 relocations. Like an ADDR16 using the symbol's
11041 address in the GOT as relocation value instead of the
11042 symbol's value itself. Also, create a GOT entry for the
11043 symbol and put the symbol value there. */
11044 case R_PPC64_GOT_TLSGD16
:
11045 case R_PPC64_GOT_TLSGD16_LO
:
11046 case R_PPC64_GOT_TLSGD16_HI
:
11047 case R_PPC64_GOT_TLSGD16_HA
:
11048 tls_type
= TLS_TLS
| TLS_GD
;
11051 case R_PPC64_GOT_TLSLD16
:
11052 case R_PPC64_GOT_TLSLD16_LO
:
11053 case R_PPC64_GOT_TLSLD16_HI
:
11054 case R_PPC64_GOT_TLSLD16_HA
:
11055 tls_type
= TLS_TLS
| TLS_LD
;
11058 case R_PPC64_GOT_TPREL16_DS
:
11059 case R_PPC64_GOT_TPREL16_LO_DS
:
11060 case R_PPC64_GOT_TPREL16_HI
:
11061 case R_PPC64_GOT_TPREL16_HA
:
11062 tls_type
= TLS_TLS
| TLS_TPREL
;
11065 case R_PPC64_GOT_DTPREL16_DS
:
11066 case R_PPC64_GOT_DTPREL16_LO_DS
:
11067 case R_PPC64_GOT_DTPREL16_HI
:
11068 case R_PPC64_GOT_DTPREL16_HA
:
11069 tls_type
= TLS_TLS
| TLS_DTPREL
;
11072 case R_PPC64_GOT16
:
11073 case R_PPC64_GOT16_LO
:
11074 case R_PPC64_GOT16_HI
:
11075 case R_PPC64_GOT16_HA
:
11076 case R_PPC64_GOT16_DS
:
11077 case R_PPC64_GOT16_LO_DS
:
11080 /* Relocation is to the entry for this symbol in the global
11085 unsigned long indx
= 0;
11087 if (tls_type
== (TLS_TLS
| TLS_LD
)
11089 || !h
->elf
.def_dynamic
))
11090 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
11093 struct got_entry
*ent
;
11097 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
11098 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
11101 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
11102 /* This is actually a static link, or it is a
11103 -Bsymbolic link and the symbol is defined
11104 locally, or the symbol was forced to be local
11105 because of a version file. */
11109 indx
= h
->elf
.dynindx
;
11110 unresolved_reloc
= FALSE
;
11112 ent
= h
->elf
.got
.glist
;
11116 if (local_got_ents
== NULL
)
11118 ent
= local_got_ents
[r_symndx
];
11121 for (; ent
!= NULL
; ent
= ent
->next
)
11122 if (ent
->addend
== orig_addend
11123 && ent
->owner
== input_bfd
11124 && ent
->tls_type
== tls_type
)
11128 offp
= &ent
->got
.offset
;
11131 got
= ppc64_elf_tdata (input_bfd
)->got
;
11135 /* The offset must always be a multiple of 8. We use the
11136 least significant bit to record whether we have already
11137 processed this entry. */
11139 if ((off
& 1) != 0)
11143 /* Generate relocs for the dynamic linker, except in
11144 the case of TLSLD where we'll use one entry per
11146 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
11149 if ((info
->shared
|| indx
!= 0)
11150 && (offp
== &ppc64_tlsld_got (input_bfd
)->offset
11152 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11153 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
11155 outrel
.r_offset
= (got
->output_section
->vma
11156 + got
->output_offset
11158 outrel
.r_addend
= addend
;
11159 if (tls_type
& (TLS_LD
| TLS_GD
))
11161 outrel
.r_addend
= 0;
11162 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
11163 if (tls_type
== (TLS_TLS
| TLS_GD
))
11165 loc
= relgot
->contents
;
11166 loc
+= (relgot
->reloc_count
++
11167 * sizeof (Elf64_External_Rela
));
11168 bfd_elf64_swap_reloca_out (output_bfd
,
11170 outrel
.r_offset
+= 8;
11171 outrel
.r_addend
= addend
;
11173 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11176 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
11177 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11178 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11179 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
11180 else if (indx
== 0)
11182 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
11184 /* Write the .got section contents for the sake
11186 loc
= got
->contents
+ off
;
11187 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
11191 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
11193 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
11195 outrel
.r_addend
+= relocation
;
11196 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
11197 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
11199 loc
= relgot
->contents
;
11200 loc
+= (relgot
->reloc_count
++
11201 * sizeof (Elf64_External_Rela
));
11202 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11205 /* Init the .got section contents here if we're not
11206 emitting a reloc. */
11209 relocation
+= addend
;
11210 if (tls_type
== (TLS_TLS
| TLS_LD
))
11212 else if (tls_type
!= 0)
11214 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11215 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11216 relocation
+= DTP_OFFSET
- TP_OFFSET
;
11218 if (tls_type
== (TLS_TLS
| TLS_GD
))
11220 bfd_put_64 (output_bfd
, relocation
,
11221 got
->contents
+ off
+ 8);
11226 bfd_put_64 (output_bfd
, relocation
,
11227 got
->contents
+ off
);
11231 if (off
>= (bfd_vma
) -2)
11234 relocation
= got
->output_offset
+ off
;
11236 /* TOC base (r2) is TOC start plus 0x8000. */
11237 addend
= -TOC_BASE_OFF
;
11241 case R_PPC64_PLT16_HA
:
11242 case R_PPC64_PLT16_HI
:
11243 case R_PPC64_PLT16_LO
:
11244 case R_PPC64_PLT32
:
11245 case R_PPC64_PLT64
:
11246 /* Relocation is to the entry for this symbol in the
11247 procedure linkage table. */
11249 /* Resolve a PLT reloc against a local symbol directly,
11250 without using the procedure linkage table. */
11254 /* It's possible that we didn't make a PLT entry for this
11255 symbol. This happens when statically linking PIC code,
11256 or when using -Bsymbolic. Go find a match if there is a
11258 if (htab
->plt
!= NULL
)
11260 struct plt_entry
*ent
;
11261 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11262 if (ent
->addend
== orig_addend
11263 && ent
->plt
.offset
!= (bfd_vma
) -1)
11265 relocation
= (htab
->plt
->output_section
->vma
11266 + htab
->plt
->output_offset
11267 + ent
->plt
.offset
);
11268 unresolved_reloc
= FALSE
;
11274 /* Relocation value is TOC base. */
11275 relocation
= TOCstart
;
11277 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
11278 else if (unresolved_reloc
)
11280 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
11281 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
11283 unresolved_reloc
= TRUE
;
11286 /* TOC16 relocs. We want the offset relative to the TOC base,
11287 which is the address of the start of the TOC plus 0x8000.
11288 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11290 case R_PPC64_TOC16
:
11291 case R_PPC64_TOC16_LO
:
11292 case R_PPC64_TOC16_HI
:
11293 case R_PPC64_TOC16_DS
:
11294 case R_PPC64_TOC16_LO_DS
:
11295 case R_PPC64_TOC16_HA
:
11296 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
11299 /* Relocate against the beginning of the section. */
11300 case R_PPC64_SECTOFF
:
11301 case R_PPC64_SECTOFF_LO
:
11302 case R_PPC64_SECTOFF_HI
:
11303 case R_PPC64_SECTOFF_DS
:
11304 case R_PPC64_SECTOFF_LO_DS
:
11305 case R_PPC64_SECTOFF_HA
:
11307 addend
-= sec
->output_section
->vma
;
11310 case R_PPC64_REL14
:
11311 case R_PPC64_REL14_BRNTAKEN
:
11312 case R_PPC64_REL14_BRTAKEN
:
11313 case R_PPC64_REL24
:
11316 case R_PPC64_TPREL16
:
11317 case R_PPC64_TPREL16_LO
:
11318 case R_PPC64_TPREL16_HI
:
11319 case R_PPC64_TPREL16_HA
:
11320 case R_PPC64_TPREL16_DS
:
11321 case R_PPC64_TPREL16_LO_DS
:
11322 case R_PPC64_TPREL16_HIGHER
:
11323 case R_PPC64_TPREL16_HIGHERA
:
11324 case R_PPC64_TPREL16_HIGHEST
:
11325 case R_PPC64_TPREL16_HIGHESTA
:
11326 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11328 /* The TPREL16 relocs shouldn't really be used in shared
11329 libs as they will result in DT_TEXTREL being set, but
11330 support them anyway. */
11334 case R_PPC64_DTPREL16
:
11335 case R_PPC64_DTPREL16_LO
:
11336 case R_PPC64_DTPREL16_HI
:
11337 case R_PPC64_DTPREL16_HA
:
11338 case R_PPC64_DTPREL16_DS
:
11339 case R_PPC64_DTPREL16_LO_DS
:
11340 case R_PPC64_DTPREL16_HIGHER
:
11341 case R_PPC64_DTPREL16_HIGHERA
:
11342 case R_PPC64_DTPREL16_HIGHEST
:
11343 case R_PPC64_DTPREL16_HIGHESTA
:
11344 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11347 case R_PPC64_DTPMOD64
:
11352 case R_PPC64_TPREL64
:
11353 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11356 case R_PPC64_DTPREL64
:
11357 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11360 /* Relocations that may need to be propagated if this is a
11362 case R_PPC64_REL30
:
11363 case R_PPC64_REL32
:
11364 case R_PPC64_REL64
:
11365 case R_PPC64_ADDR14
:
11366 case R_PPC64_ADDR14_BRNTAKEN
:
11367 case R_PPC64_ADDR14_BRTAKEN
:
11368 case R_PPC64_ADDR16
:
11369 case R_PPC64_ADDR16_DS
:
11370 case R_PPC64_ADDR16_HA
:
11371 case R_PPC64_ADDR16_HI
:
11372 case R_PPC64_ADDR16_HIGHER
:
11373 case R_PPC64_ADDR16_HIGHERA
:
11374 case R_PPC64_ADDR16_HIGHEST
:
11375 case R_PPC64_ADDR16_HIGHESTA
:
11376 case R_PPC64_ADDR16_LO
:
11377 case R_PPC64_ADDR16_LO_DS
:
11378 case R_PPC64_ADDR24
:
11379 case R_PPC64_ADDR32
:
11380 case R_PPC64_ADDR64
:
11381 case R_PPC64_UADDR16
:
11382 case R_PPC64_UADDR32
:
11383 case R_PPC64_UADDR64
:
11385 if ((input_section
->flags
& SEC_ALLOC
) == 0)
11388 if (NO_OPD_RELOCS
&& is_opd
)
11393 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11394 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
11395 && (must_be_dyn_reloc (info
, r_type
)
11396 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
11397 || (ELIMINATE_COPY_RELOCS
11400 && h
->elf
.dynindx
!= -1
11401 && !h
->elf
.non_got_ref
11402 && !h
->elf
.def_regular
))
11404 Elf_Internal_Rela outrel
;
11405 bfd_boolean skip
, relocate
;
11410 /* When generating a dynamic object, these relocations
11411 are copied into the output file to be resolved at run
11417 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
11418 input_section
, rel
->r_offset
);
11419 if (out_off
== (bfd_vma
) -1)
11421 else if (out_off
== (bfd_vma
) -2)
11422 skip
= TRUE
, relocate
= TRUE
;
11423 out_off
+= (input_section
->output_section
->vma
11424 + input_section
->output_offset
);
11425 outrel
.r_offset
= out_off
;
11426 outrel
.r_addend
= rel
->r_addend
;
11428 /* Optimize unaligned reloc use. */
11429 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
11430 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
11431 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
11432 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
11433 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
11434 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
11435 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
11436 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
11437 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
11440 memset (&outrel
, 0, sizeof outrel
);
11441 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
11443 && r_type
!= R_PPC64_TOC
)
11444 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
11447 /* This symbol is local, or marked to become local,
11448 or this is an opd section reloc which must point
11449 at a local function. */
11450 outrel
.r_addend
+= relocation
;
11451 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
11453 if (is_opd
&& h
!= NULL
)
11455 /* Lie about opd entries. This case occurs
11456 when building shared libraries and we
11457 reference a function in another shared
11458 lib. The same thing happens for a weak
11459 definition in an application that's
11460 overridden by a strong definition in a
11461 shared lib. (I believe this is a generic
11462 bug in binutils handling of weak syms.)
11463 In these cases we won't use the opd
11464 entry in this lib. */
11465 unresolved_reloc
= FALSE
;
11467 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11469 /* We need to relocate .opd contents for ld.so.
11470 Prelink also wants simple and consistent rules
11471 for relocs. This make all RELATIVE relocs have
11472 *r_offset equal to r_addend. */
11479 if (r_symndx
== 0 || bfd_is_abs_section (sec
))
11481 else if (sec
== NULL
|| sec
->owner
== NULL
)
11483 bfd_set_error (bfd_error_bad_value
);
11490 osec
= sec
->output_section
;
11491 indx
= elf_section_data (osec
)->dynindx
;
11495 if ((osec
->flags
& SEC_READONLY
) == 0
11496 && htab
->elf
.data_index_section
!= NULL
)
11497 osec
= htab
->elf
.data_index_section
;
11499 osec
= htab
->elf
.text_index_section
;
11500 indx
= elf_section_data (osec
)->dynindx
;
11502 BFD_ASSERT (indx
!= 0);
11504 /* We are turning this relocation into one
11505 against a section symbol, so subtract out
11506 the output section's address but not the
11507 offset of the input section in the output
11509 outrel
.r_addend
-= osec
->vma
;
11512 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
11516 sreloc
= elf_section_data (input_section
)->sreloc
;
11517 if (sreloc
== NULL
)
11520 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
11523 loc
= sreloc
->contents
;
11524 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11525 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11527 /* If this reloc is against an external symbol, it will
11528 be computed at runtime, so there's no need to do
11529 anything now. However, for the sake of prelink ensure
11530 that the section contents are a known value. */
11533 unresolved_reloc
= FALSE
;
11534 /* The value chosen here is quite arbitrary as ld.so
11535 ignores section contents except for the special
11536 case of .opd where the contents might be accessed
11537 before relocation. Choose zero, as that won't
11538 cause reloc overflow. */
11541 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11542 to improve backward compatibility with older
11544 if (r_type
== R_PPC64_ADDR64
)
11545 addend
= outrel
.r_addend
;
11546 /* Adjust pc_relative relocs to have zero in *r_offset. */
11547 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
11548 addend
= (input_section
->output_section
->vma
11549 + input_section
->output_offset
11556 case R_PPC64_GLOB_DAT
:
11557 case R_PPC64_JMP_SLOT
:
11558 case R_PPC64_RELATIVE
:
11559 /* We shouldn't ever see these dynamic relocs in relocatable
11561 /* Fall through. */
11563 case R_PPC64_PLTGOT16
:
11564 case R_PPC64_PLTGOT16_DS
:
11565 case R_PPC64_PLTGOT16_HA
:
11566 case R_PPC64_PLTGOT16_HI
:
11567 case R_PPC64_PLTGOT16_LO
:
11568 case R_PPC64_PLTGOT16_LO_DS
:
11569 case R_PPC64_PLTREL32
:
11570 case R_PPC64_PLTREL64
:
11571 /* These ones haven't been implemented yet. */
11573 (*_bfd_error_handler
)
11574 (_("%B: relocation %s is not supported for symbol %s."),
11576 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
11578 bfd_set_error (bfd_error_invalid_operation
);
11583 /* Do any further special processing. */
11589 case R_PPC64_ADDR16_HA
:
11590 case R_PPC64_ADDR16_HIGHERA
:
11591 case R_PPC64_ADDR16_HIGHESTA
:
11592 case R_PPC64_TOC16_HA
:
11593 case R_PPC64_SECTOFF_HA
:
11594 case R_PPC64_TPREL16_HA
:
11595 case R_PPC64_DTPREL16_HA
:
11596 case R_PPC64_TPREL16_HIGHER
:
11597 case R_PPC64_TPREL16_HIGHERA
:
11598 case R_PPC64_TPREL16_HIGHEST
:
11599 case R_PPC64_TPREL16_HIGHESTA
:
11600 case R_PPC64_DTPREL16_HIGHER
:
11601 case R_PPC64_DTPREL16_HIGHERA
:
11602 case R_PPC64_DTPREL16_HIGHEST
:
11603 case R_PPC64_DTPREL16_HIGHESTA
:
11604 /* It's just possible that this symbol is a weak symbol
11605 that's not actually defined anywhere. In that case,
11606 'sec' would be NULL, and we should leave the symbol
11607 alone (it will be set to zero elsewhere in the link). */
11612 case R_PPC64_GOT16_HA
:
11613 case R_PPC64_PLTGOT16_HA
:
11614 case R_PPC64_PLT16_HA
:
11615 case R_PPC64_GOT_TLSGD16_HA
:
11616 case R_PPC64_GOT_TLSLD16_HA
:
11617 case R_PPC64_GOT_TPREL16_HA
:
11618 case R_PPC64_GOT_DTPREL16_HA
:
11619 /* Add 0x10000 if sign bit in 0:15 is set.
11620 Bits 0:15 are not used. */
11624 case R_PPC64_ADDR16_DS
:
11625 case R_PPC64_ADDR16_LO_DS
:
11626 case R_PPC64_GOT16_DS
:
11627 case R_PPC64_GOT16_LO_DS
:
11628 case R_PPC64_PLT16_LO_DS
:
11629 case R_PPC64_SECTOFF_DS
:
11630 case R_PPC64_SECTOFF_LO_DS
:
11631 case R_PPC64_TOC16_DS
:
11632 case R_PPC64_TOC16_LO_DS
:
11633 case R_PPC64_PLTGOT16_DS
:
11634 case R_PPC64_PLTGOT16_LO_DS
:
11635 case R_PPC64_GOT_TPREL16_DS
:
11636 case R_PPC64_GOT_TPREL16_LO_DS
:
11637 case R_PPC64_GOT_DTPREL16_DS
:
11638 case R_PPC64_GOT_DTPREL16_LO_DS
:
11639 case R_PPC64_TPREL16_DS
:
11640 case R_PPC64_TPREL16_LO_DS
:
11641 case R_PPC64_DTPREL16_DS
:
11642 case R_PPC64_DTPREL16_LO_DS
:
11643 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
11645 /* If this reloc is against an lq insn, then the value must be
11646 a multiple of 16. This is somewhat of a hack, but the
11647 "correct" way to do this by defining _DQ forms of all the
11648 _DS relocs bloats all reloc switches in this file. It
11649 doesn't seem to make much sense to use any of these relocs
11650 in data, so testing the insn should be safe. */
11651 if ((insn
& (0x3f << 26)) == (56u << 26))
11653 if (((relocation
+ addend
) & mask
) != 0)
11655 (*_bfd_error_handler
)
11656 (_("%B: error: relocation %s not a multiple of %d"),
11658 ppc64_elf_howto_table
[r_type
]->name
,
11660 bfd_set_error (bfd_error_bad_value
);
11667 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11668 because such sections are not SEC_ALLOC and thus ld.so will
11669 not process them. */
11670 if (unresolved_reloc
11671 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
11672 && h
->elf
.def_dynamic
))
11674 (*_bfd_error_handler
)
11675 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11678 (long) rel
->r_offset
,
11679 ppc64_elf_howto_table
[(int) r_type
]->name
,
11680 h
->elf
.root
.root
.string
);
11684 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
11692 if (r
!= bfd_reloc_ok
)
11694 if (sym_name
== NULL
)
11695 sym_name
= "(null)";
11696 if (r
== bfd_reloc_overflow
)
11701 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11702 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
11704 /* Assume this is a call protected by other code that
11705 detects the symbol is undefined. If this is the case,
11706 we can safely ignore the overflow. If not, the
11707 program is hosed anyway, and a little warning isn't
11713 if (!((*info
->callbacks
->reloc_overflow
)
11714 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
11715 ppc64_elf_howto_table
[r_type
]->name
,
11716 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
11721 (*_bfd_error_handler
)
11722 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11725 (long) rel
->r_offset
,
11726 ppc64_elf_howto_table
[r_type
]->name
,
11734 /* If we're emitting relocations, then shortly after this function
11735 returns, reloc offsets and addends for this section will be
11736 adjusted. Worse, reloc symbol indices will be for the output
11737 file rather than the input. Save a copy of the relocs for
11738 opd_entry_value. */
11739 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
11742 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
11743 rel
= bfd_alloc (input_bfd
, amt
);
11744 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
11745 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
11748 memcpy (rel
, relocs
, amt
);
11753 /* Adjust the value of any local symbols in opd sections. */
11756 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
11757 const char *name ATTRIBUTE_UNUSED
,
11758 Elf_Internal_Sym
*elfsym
,
11759 asection
*input_sec
,
11760 struct elf_link_hash_entry
*h
)
11762 struct _opd_sec_data
*opd
;
11769 opd
= get_opd_info (input_sec
);
11770 if (opd
== NULL
|| opd
->adjust
== NULL
)
11773 value
= elfsym
->st_value
- input_sec
->output_offset
;
11774 if (!info
->relocatable
)
11775 value
-= input_sec
->output_section
->vma
;
11777 adjust
= opd
->adjust
[value
/ 8];
11779 elfsym
->st_value
= 0;
11781 elfsym
->st_value
+= adjust
;
11785 /* Finish up dynamic symbol handling. We set the contents of various
11786 dynamic sections here. */
11789 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
11790 struct bfd_link_info
*info
,
11791 struct elf_link_hash_entry
*h
,
11792 Elf_Internal_Sym
*sym
)
11794 struct ppc_link_hash_table
*htab
;
11795 struct plt_entry
*ent
;
11796 Elf_Internal_Rela rela
;
11799 htab
= ppc_hash_table (info
);
11801 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11802 if (ent
->plt
.offset
!= (bfd_vma
) -1)
11804 /* This symbol has an entry in the procedure linkage
11805 table. Set it up. */
11807 if (htab
->plt
== NULL
11808 || htab
->relplt
== NULL
11809 || htab
->glink
== NULL
)
11812 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11813 fill in the PLT entry. */
11814 rela
.r_offset
= (htab
->plt
->output_section
->vma
11815 + htab
->plt
->output_offset
11816 + ent
->plt
.offset
);
11817 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
11818 rela
.r_addend
= ent
->addend
;
11820 loc
= htab
->relplt
->contents
;
11821 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
11822 * sizeof (Elf64_External_Rela
));
11823 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11828 Elf_Internal_Rela rela
;
11831 /* This symbol needs a copy reloc. Set it up. */
11833 if (h
->dynindx
== -1
11834 || (h
->root
.type
!= bfd_link_hash_defined
11835 && h
->root
.type
!= bfd_link_hash_defweak
)
11836 || htab
->relbss
== NULL
)
11839 rela
.r_offset
= (h
->root
.u
.def
.value
11840 + h
->root
.u
.def
.section
->output_section
->vma
11841 + h
->root
.u
.def
.section
->output_offset
);
11842 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
11844 loc
= htab
->relbss
->contents
;
11845 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11846 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11849 /* Mark some specially defined symbols as absolute. */
11850 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
11851 sym
->st_shndx
= SHN_ABS
;
11856 /* Used to decide how to sort relocs in an optimal manner for the
11857 dynamic linker, before writing them out. */
11859 static enum elf_reloc_type_class
11860 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
11862 enum elf_ppc64_reloc_type r_type
;
11864 r_type
= ELF64_R_TYPE (rela
->r_info
);
11867 case R_PPC64_RELATIVE
:
11868 return reloc_class_relative
;
11869 case R_PPC64_JMP_SLOT
:
11870 return reloc_class_plt
;
11872 return reloc_class_copy
;
11874 return reloc_class_normal
;
11878 /* Finish up the dynamic sections. */
11881 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
11882 struct bfd_link_info
*info
)
11884 struct ppc_link_hash_table
*htab
;
11888 htab
= ppc_hash_table (info
);
11889 dynobj
= htab
->elf
.dynobj
;
11890 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11892 if (htab
->elf
.dynamic_sections_created
)
11894 Elf64_External_Dyn
*dyncon
, *dynconend
;
11896 if (sdyn
== NULL
|| htab
->got
== NULL
)
11899 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11900 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11901 for (; dyncon
< dynconend
; dyncon
++)
11903 Elf_Internal_Dyn dyn
;
11906 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11913 case DT_PPC64_GLINK
:
11915 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11916 /* We stupidly defined DT_PPC64_GLINK to be the start
11917 of glink rather than the first entry point, which is
11918 what ld.so needs, and now have a bigger stub to
11919 support automatic multiple TOCs. */
11920 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11924 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11927 dyn
.d_un
.d_ptr
= s
->vma
;
11930 case DT_PPC64_OPDSZ
:
11931 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11934 dyn
.d_un
.d_val
= s
->size
;
11939 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11944 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11948 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11952 /* Don't count procedure linkage table relocs in the
11953 overall reloc count. */
11957 dyn
.d_un
.d_val
-= s
->size
;
11961 /* We may not be using the standard ELF linker script.
11962 If .rela.plt is the first .rela section, we adjust
11963 DT_RELA to not include it. */
11967 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11969 dyn
.d_un
.d_ptr
+= s
->size
;
11973 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11977 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
11979 /* Fill in the first entry in the global offset table.
11980 We use it to hold the link-time TOCbase. */
11981 bfd_put_64 (output_bfd
,
11982 elf_gp (output_bfd
) + TOC_BASE_OFF
,
11983 htab
->got
->contents
);
11985 /* Set .got entry size. */
11986 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
11989 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
11991 /* Set .plt entry size. */
11992 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
11996 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11997 brlt ourselves if emitrelocations. */
11998 if (htab
->brlt
!= NULL
11999 && htab
->brlt
->reloc_count
!= 0
12000 && !_bfd_elf_link_output_relocs (output_bfd
,
12002 &elf_section_data (htab
->brlt
)->rel_hdr
,
12003 elf_section_data (htab
->brlt
)->relocs
,
12007 if (htab
->glink
!= NULL
12008 && htab
->glink
->reloc_count
!= 0
12009 && !_bfd_elf_link_output_relocs (output_bfd
,
12011 &elf_section_data (htab
->glink
)->rel_hdr
,
12012 elf_section_data (htab
->glink
)->relocs
,
12016 /* We need to handle writing out multiple GOT sections ourselves,
12017 since we didn't add them to DYNOBJ. We know dynobj is the first
12019 while ((dynobj
= dynobj
->link_next
) != NULL
)
12023 if (!is_ppc64_elf (dynobj
))
12026 s
= ppc64_elf_tdata (dynobj
)->got
;
12029 && s
->output_section
!= bfd_abs_section_ptr
12030 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12031 s
->contents
, s
->output_offset
,
12034 s
= ppc64_elf_tdata (dynobj
)->relgot
;
12037 && s
->output_section
!= bfd_abs_section_ptr
12038 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12039 s
->contents
, s
->output_offset
,
12047 #include "elf64-target.h"