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 bfd_boolean synthetic_relocatable
;
2694 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2697 compare_symbols (const void *ap
, const void *bp
)
2699 const asymbol
*a
= * (const asymbol
**) ap
;
2700 const asymbol
*b
= * (const asymbol
**) bp
;
2702 /* Section symbols first. */
2703 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2705 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2708 /* then .opd symbols. */
2709 if (strcmp (a
->section
->name
, ".opd") == 0
2710 && strcmp (b
->section
->name
, ".opd") != 0)
2712 if (strcmp (a
->section
->name
, ".opd") != 0
2713 && strcmp (b
->section
->name
, ".opd") == 0)
2716 /* then other code symbols. */
2717 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2718 == (SEC_CODE
| SEC_ALLOC
)
2719 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2720 != (SEC_CODE
| SEC_ALLOC
))
2723 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2724 != (SEC_CODE
| SEC_ALLOC
)
2725 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2726 == (SEC_CODE
| SEC_ALLOC
))
2729 if (synthetic_relocatable
)
2731 if (a
->section
->id
< b
->section
->id
)
2734 if (a
->section
->id
> b
->section
->id
)
2738 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2741 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2744 /* For syms with the same value, prefer strong dynamic global function
2745 syms over other syms. */
2746 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2749 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2752 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2755 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2758 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2761 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2764 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2767 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2773 /* Search SYMS for a symbol of the given VALUE. */
2776 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2784 mid
= (lo
+ hi
) >> 1;
2785 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2787 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2797 mid
= (lo
+ hi
) >> 1;
2798 if (syms
[mid
]->section
->id
< id
)
2800 else if (syms
[mid
]->section
->id
> id
)
2802 else if (syms
[mid
]->value
< value
)
2804 else if (syms
[mid
]->value
> value
)
2814 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2816 bfd_vma vma
= *(bfd_vma
*) ptr
;
2817 return ((section
->flags
& SEC_ALLOC
) != 0
2818 && section
->vma
<= vma
2819 && vma
< section
->vma
+ section
->size
);
2822 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2823 entry syms. Also generate @plt symbols for the glink branch table. */
2826 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2827 long static_count
, asymbol
**static_syms
,
2828 long dyn_count
, asymbol
**dyn_syms
,
2835 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2837 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2842 opd
= bfd_get_section_by_name (abfd
, ".opd");
2846 symcount
= static_count
;
2848 symcount
+= dyn_count
;
2852 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2856 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2858 /* Use both symbol tables. */
2859 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2860 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2862 else if (!relocatable
&& static_count
== 0)
2863 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2865 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
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 (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
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 (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
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 /* Ignore bogus symbols. */
3037 if (syms
[i
]->value
> opd
->size
- 8)
3040 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3041 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3044 size
+= sizeof (asymbol
);
3045 size
+= strlen (syms
[i
]->name
) + 2;
3049 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3051 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3053 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3055 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3057 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3058 goto free_contents_and_exit
;
3060 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3061 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3064 extdynend
= extdyn
+ dynamic
->size
;
3065 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3067 Elf_Internal_Dyn dyn
;
3068 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3070 if (dyn
.d_tag
== DT_NULL
)
3073 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3075 /* The first glink stub starts at offset 32; see comment in
3076 ppc64_elf_finish_dynamic_sections. */
3077 glink_vma
= dyn
.d_un
.d_val
+ 32;
3078 /* The .glink section usually does not survive the final
3079 link; search for the section (usually .text) where the
3080 glink stubs now reside. */
3081 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3092 /* Determine __glink trampoline by reading the relative branch
3093 from the first glink stub. */
3095 if (bfd_get_section_contents (abfd
, glink
, buf
,
3096 glink_vma
+ 4 - glink
->vma
, 4))
3098 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3100 if ((insn
& ~0x3fffffc) == 0)
3101 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3105 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3107 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3110 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3111 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3112 goto free_contents_and_exit
;
3114 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3115 size
+= plt_count
* sizeof (asymbol
);
3117 p
= relplt
->relocation
;
3118 for (i
= 0; i
< plt_count
; i
++, p
++)
3119 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3123 s
= *ret
= bfd_malloc (size
);
3125 goto free_contents_and_exit
;
3127 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3129 for (i
= secsymend
; i
< opdsymend
; ++i
)
3133 if (syms
[i
]->value
> opd
->size
- 8)
3136 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3137 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3141 asection
*sec
= abfd
->sections
;
3148 long mid
= (lo
+ hi
) >> 1;
3149 if (syms
[mid
]->section
->vma
< ent
)
3151 else if (syms
[mid
]->section
->vma
> ent
)
3155 sec
= syms
[mid
]->section
;
3160 if (lo
>= hi
&& lo
> codesecsym
)
3161 sec
= syms
[lo
- 1]->section
;
3163 for (; sec
!= NULL
; sec
= sec
->next
)
3167 if ((sec
->flags
& SEC_ALLOC
) == 0
3168 || (sec
->flags
& SEC_LOAD
) == 0)
3170 if ((sec
->flags
& SEC_CODE
) != 0)
3173 s
->flags
|= BSF_SYNTHETIC
;
3174 s
->value
= ent
- s
->section
->vma
;
3177 len
= strlen (syms
[i
]->name
);
3178 memcpy (names
, syms
[i
]->name
, len
+ 1);
3180 /* Have udata.p point back to the original symbol this
3181 synthetic symbol was derived from. */
3182 s
->udata
.p
= syms
[i
];
3188 if (glink
!= NULL
&& relplt
!= NULL
)
3192 /* Add a symbol for the main glink trampoline. */
3193 memset (s
, 0, sizeof *s
);
3195 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3197 s
->value
= resolv_vma
- glink
->vma
;
3199 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3200 names
+= sizeof ("__glink_PLTresolve");
3205 /* FIXME: It would be very much nicer to put sym@plt on the
3206 stub rather than on the glink branch table entry. The
3207 objdump disassembler would then use a sensible symbol
3208 name on plt calls. The difficulty in doing so is
3209 a) finding the stubs, and,
3210 b) matching stubs against plt entries, and,
3211 c) there can be multiple stubs for a given plt entry.
3213 Solving (a) could be done by code scanning, but older
3214 ppc64 binaries used different stubs to current code.
3215 (b) is the tricky one since you need to known the toc
3216 pointer for at least one function that uses a pic stub to
3217 be able to calculate the plt address referenced.
3218 (c) means gdb would need to set multiple breakpoints (or
3219 find the glink branch itself) when setting breakpoints
3220 for pending shared library loads. */
3221 p
= relplt
->relocation
;
3222 for (i
= 0; i
< plt_count
; i
++, p
++)
3226 *s
= **p
->sym_ptr_ptr
;
3227 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3228 we are defining a symbol, ensure one of them is set. */
3229 if ((s
->flags
& BSF_LOCAL
) == 0)
3230 s
->flags
|= BSF_GLOBAL
;
3231 s
->flags
|= BSF_SYNTHETIC
;
3233 s
->value
= glink_vma
- glink
->vma
;
3236 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3237 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3239 memcpy (names
, "@plt", sizeof ("@plt"));
3240 names
+= sizeof ("@plt");
3255 /* The following functions are specific to the ELF linker, while
3256 functions above are used generally. Those named ppc64_elf_* are
3257 called by the main ELF linker code. They appear in this file more
3258 or less in the order in which they are called. eg.
3259 ppc64_elf_check_relocs is called early in the link process,
3260 ppc64_elf_finish_dynamic_sections is one of the last functions
3263 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3264 functions have both a function code symbol and a function descriptor
3265 symbol. A call to foo in a relocatable object file looks like:
3272 The function definition in another object file might be:
3276 . .quad .TOC.@tocbase
3282 When the linker resolves the call during a static link, the branch
3283 unsurprisingly just goes to .foo and the .opd information is unused.
3284 If the function definition is in a shared library, things are a little
3285 different: The call goes via a plt call stub, the opd information gets
3286 copied to the plt, and the linker patches the nop.
3294 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3295 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3296 . std 2,40(1) # this is the general idea
3304 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3306 The "reloc ()" notation is supposed to indicate that the linker emits
3307 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3310 What are the difficulties here? Well, firstly, the relocations
3311 examined by the linker in check_relocs are against the function code
3312 sym .foo, while the dynamic relocation in the plt is emitted against
3313 the function descriptor symbol, foo. Somewhere along the line, we need
3314 to carefully copy dynamic link information from one symbol to the other.
3315 Secondly, the generic part of the elf linker will make .foo a dynamic
3316 symbol as is normal for most other backends. We need foo dynamic
3317 instead, at least for an application final link. However, when
3318 creating a shared library containing foo, we need to have both symbols
3319 dynamic so that references to .foo are satisfied during the early
3320 stages of linking. Otherwise the linker might decide to pull in a
3321 definition from some other object, eg. a static library.
3323 Update: As of August 2004, we support a new convention. Function
3324 calls may use the function descriptor symbol, ie. "bl foo". This
3325 behaves exactly as "bl .foo". */
3327 /* The linker needs to keep track of the number of relocs that it
3328 decides to copy as dynamic relocs in check_relocs for each symbol.
3329 This is so that it can later discard them if they are found to be
3330 unnecessary. We store the information in a field extending the
3331 regular ELF linker hash table. */
3333 struct ppc_dyn_relocs
3335 struct ppc_dyn_relocs
*next
;
3337 /* The input section of the reloc. */
3340 /* Total number of relocs copied for the input section. */
3341 bfd_size_type count
;
3343 /* Number of pc-relative relocs copied for the input section. */
3344 bfd_size_type pc_count
;
3347 /* Track GOT entries needed for a given symbol. We might need more
3348 than one got entry per symbol. */
3351 struct got_entry
*next
;
3353 /* The symbol addend that we'll be placing in the GOT. */
3356 /* Unlike other ELF targets, we use separate GOT entries for the same
3357 symbol referenced from different input files. This is to support
3358 automatic multiple TOC/GOT sections, where the TOC base can vary
3359 from one input file to another. FIXME: After group_sections we
3360 ought to merge entries within the group.
3362 Point to the BFD owning this GOT entry. */
3365 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3366 TLS_TPREL or TLS_DTPREL for tls entries. */
3369 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3372 bfd_signed_vma refcount
;
3377 /* The same for PLT. */
3380 struct plt_entry
*next
;
3386 bfd_signed_vma refcount
;
3391 /* Of those relocs that might be copied as dynamic relocs, this function
3392 selects those that must be copied when linking a shared library,
3393 even when the symbol is local. */
3396 must_be_dyn_reloc (struct bfd_link_info
*info
,
3397 enum elf_ppc64_reloc_type r_type
)
3409 case R_PPC64_TPREL16
:
3410 case R_PPC64_TPREL16_LO
:
3411 case R_PPC64_TPREL16_HI
:
3412 case R_PPC64_TPREL16_HA
:
3413 case R_PPC64_TPREL16_DS
:
3414 case R_PPC64_TPREL16_LO_DS
:
3415 case R_PPC64_TPREL16_HIGHER
:
3416 case R_PPC64_TPREL16_HIGHERA
:
3417 case R_PPC64_TPREL16_HIGHEST
:
3418 case R_PPC64_TPREL16_HIGHESTA
:
3419 case R_PPC64_TPREL64
:
3420 return !info
->executable
;
3424 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3425 copying dynamic variables from a shared lib into an app's dynbss
3426 section, and instead use a dynamic relocation to point into the
3427 shared lib. With code that gcc generates, it's vital that this be
3428 enabled; In the PowerPC64 ABI, the address of a function is actually
3429 the address of a function descriptor, which resides in the .opd
3430 section. gcc uses the descriptor directly rather than going via the
3431 GOT as some other ABI's do, which means that initialized function
3432 pointers must reference the descriptor. Thus, a function pointer
3433 initialized to the address of a function in a shared library will
3434 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3435 redefines the function descriptor symbol to point to the copy. This
3436 presents a problem as a plt entry for that function is also
3437 initialized from the function descriptor symbol and the copy reloc
3438 may not be initialized first. */
3439 #define ELIMINATE_COPY_RELOCS 1
3441 /* Section name for stubs is the associated section name plus this
3443 #define STUB_SUFFIX ".stub"
3446 ppc_stub_long_branch:
3447 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3448 destination, but a 24 bit branch in a stub section will reach.
3451 ppc_stub_plt_branch:
3452 Similar to the above, but a 24 bit branch in the stub section won't
3453 reach its destination.
3454 . addis %r12,%r2,xxx@toc@ha
3455 . ld %r11,xxx@toc@l(%r12)
3460 Used to call a function in a shared library. If it so happens that
3461 the plt entry referenced crosses a 64k boundary, then an extra
3462 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3463 . addis %r12,%r2,xxx@toc@ha
3465 . ld %r11,xxx+0@toc@l(%r12)
3467 . ld %r2,xxx+8@toc@l(%r12)
3468 . ld %r11,xxx+16@toc@l(%r12)
3471 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3472 code to adjust the value and save r2 to support multiple toc sections.
3473 A ppc_stub_long_branch with an r2 offset looks like:
3475 . addis %r2,%r2,off@ha
3476 . addi %r2,%r2,off@l
3479 A ppc_stub_plt_branch with an r2 offset looks like:
3481 . addis %r12,%r2,xxx@toc@ha
3482 . ld %r11,xxx@toc@l(%r12)
3483 . addis %r2,%r2,off@ha
3484 . addi %r2,%r2,off@l
3488 In cases where the "addis" instruction would add zero, the "addis" is
3489 omitted and following instructions modified slightly in some cases.
3492 enum ppc_stub_type
{
3494 ppc_stub_long_branch
,
3495 ppc_stub_long_branch_r2off
,
3496 ppc_stub_plt_branch
,
3497 ppc_stub_plt_branch_r2off
,
3501 struct ppc_stub_hash_entry
{
3503 /* Base hash table entry structure. */
3504 struct bfd_hash_entry root
;
3506 enum ppc_stub_type stub_type
;
3508 /* The stub section. */
3511 /* Offset within stub_sec of the beginning of this stub. */
3512 bfd_vma stub_offset
;
3514 /* Given the symbol's value and its section we can determine its final
3515 value when building the stubs (so the stub knows where to jump. */
3516 bfd_vma target_value
;
3517 asection
*target_section
;
3519 /* The symbol table entry, if any, that this was derived from. */
3520 struct ppc_link_hash_entry
*h
;
3522 /* And the reloc addend that this was derived from. */
3525 /* Where this stub is being called from, or, in the case of combined
3526 stub sections, the first input section in the group. */
3530 struct ppc_branch_hash_entry
{
3532 /* Base hash table entry structure. */
3533 struct bfd_hash_entry root
;
3535 /* Offset within branch lookup table. */
3536 unsigned int offset
;
3538 /* Generation marker. */
3542 struct ppc_link_hash_entry
3544 struct elf_link_hash_entry elf
;
3547 /* A pointer to the most recently used stub hash entry against this
3549 struct ppc_stub_hash_entry
*stub_cache
;
3551 /* A pointer to the next symbol starting with a '.' */
3552 struct ppc_link_hash_entry
*next_dot_sym
;
3555 /* Track dynamic relocs copied for this symbol. */
3556 struct ppc_dyn_relocs
*dyn_relocs
;
3558 /* Link between function code and descriptor symbols. */
3559 struct ppc_link_hash_entry
*oh
;
3561 /* Flag function code and descriptor symbols. */
3562 unsigned int is_func
:1;
3563 unsigned int is_func_descriptor
:1;
3564 unsigned int fake
:1;
3566 /* Whether global opd/toc sym has been adjusted or not.
3567 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3568 should be set for all globals defined in any opd/toc section. */
3569 unsigned int adjust_done
:1;
3571 /* Set if we twiddled this symbol to weak at some stage. */
3572 unsigned int was_undefined
:1;
3574 /* Contexts in which symbol is used in the GOT (or TOC).
3575 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3576 corresponding relocs are encountered during check_relocs.
3577 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3578 indicate the corresponding GOT entry type is not needed.
3579 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3580 a TPREL one. We use a separate flag rather than setting TPREL
3581 just for convenience in distinguishing the two cases. */
3582 #define TLS_GD 1 /* GD reloc. */
3583 #define TLS_LD 2 /* LD reloc. */
3584 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3585 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3586 #define TLS_TLS 16 /* Any TLS reloc. */
3587 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3588 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3592 /* ppc64 ELF linker hash table. */
3594 struct ppc_link_hash_table
3596 struct elf_link_hash_table elf
;
3598 /* The stub hash table. */
3599 struct bfd_hash_table stub_hash_table
;
3601 /* Another hash table for plt_branch stubs. */
3602 struct bfd_hash_table branch_hash_table
;
3604 /* Linker stub bfd. */
3607 /* Linker call-backs. */
3608 asection
* (*add_stub_section
) (const char *, asection
*);
3609 void (*layout_sections_again
) (void);
3611 /* Array to keep track of which stub sections have been created, and
3612 information on stub grouping. */
3614 /* This is the section to which stubs in the group will be attached. */
3616 /* The stub section. */
3618 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3622 /* Temp used when calculating TOC pointers. */
3625 /* Highest input section id. */
3628 /* Highest output section index. */
3631 /* Used when adding symbols. */
3632 struct ppc_link_hash_entry
*dot_syms
;
3634 /* List of input sections for each output section. */
3635 asection
**input_list
;
3637 /* Short-cuts to get to dynamic linker sections. */
3648 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3649 struct ppc_link_hash_entry
*tls_get_addr
;
3650 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3653 unsigned long stub_count
[ppc_stub_plt_call
];
3655 /* Number of stubs against global syms. */
3656 unsigned long stub_globals
;
3658 /* Set if we should emit symbols for stubs. */
3659 unsigned int emit_stub_syms
:1;
3661 /* Support for multiple toc sections. */
3662 unsigned int no_multi_toc
:1;
3663 unsigned int multi_toc_needed
:1;
3666 unsigned int stub_error
:1;
3668 /* Temp used by ppc64_elf_process_dot_syms. */
3669 unsigned int twiddled_syms
:1;
3671 /* Incremented every time we size stubs. */
3672 unsigned int stub_iteration
;
3674 /* Small local sym cache. */
3675 struct sym_cache sym_cache
;
3678 /* Rename some of the generic section flags to better document how they
3680 #define has_toc_reloc has_gp_reloc
3681 #define makes_toc_func_call need_finalize_relax
3682 #define call_check_in_progress reloc_done
3684 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3686 #define ppc_hash_table(p) \
3687 ((struct ppc_link_hash_table *) ((p)->hash))
3689 #define ppc_stub_hash_lookup(table, string, create, copy) \
3690 ((struct ppc_stub_hash_entry *) \
3691 bfd_hash_lookup ((table), (string), (create), (copy)))
3693 #define ppc_branch_hash_lookup(table, string, create, copy) \
3694 ((struct ppc_branch_hash_entry *) \
3695 bfd_hash_lookup ((table), (string), (create), (copy)))
3697 /* Create an entry in the stub hash table. */
3699 static struct bfd_hash_entry
*
3700 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3701 struct bfd_hash_table
*table
,
3704 /* Allocate the structure if it has not already been allocated by a
3708 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3713 /* Call the allocation method of the superclass. */
3714 entry
= bfd_hash_newfunc (entry
, table
, string
);
3717 struct ppc_stub_hash_entry
*eh
;
3719 /* Initialize the local fields. */
3720 eh
= (struct ppc_stub_hash_entry
*) entry
;
3721 eh
->stub_type
= ppc_stub_none
;
3722 eh
->stub_sec
= NULL
;
3723 eh
->stub_offset
= 0;
3724 eh
->target_value
= 0;
3725 eh
->target_section
= NULL
;
3733 /* Create an entry in the branch hash table. */
3735 static struct bfd_hash_entry
*
3736 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3737 struct bfd_hash_table
*table
,
3740 /* Allocate the structure if it has not already been allocated by a
3744 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3749 /* Call the allocation method of the superclass. */
3750 entry
= bfd_hash_newfunc (entry
, table
, string
);
3753 struct ppc_branch_hash_entry
*eh
;
3755 /* Initialize the local fields. */
3756 eh
= (struct ppc_branch_hash_entry
*) entry
;
3764 /* Create an entry in a ppc64 ELF linker hash table. */
3766 static struct bfd_hash_entry
*
3767 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3768 struct bfd_hash_table
*table
,
3771 /* Allocate the structure if it has not already been allocated by a
3775 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3780 /* Call the allocation method of the superclass. */
3781 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3784 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3786 memset (&eh
->u
.stub_cache
, 0,
3787 (sizeof (struct ppc_link_hash_entry
)
3788 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3790 /* When making function calls, old ABI code references function entry
3791 points (dot symbols), while new ABI code references the function
3792 descriptor symbol. We need to make any combination of reference and
3793 definition work together, without breaking archive linking.
3795 For a defined function "foo" and an undefined call to "bar":
3796 An old object defines "foo" and ".foo", references ".bar" (possibly
3798 A new object defines "foo" and references "bar".
3800 A new object thus has no problem with its undefined symbols being
3801 satisfied by definitions in an old object. On the other hand, the
3802 old object won't have ".bar" satisfied by a new object.
3804 Keep a list of newly added dot-symbols. */
3806 if (string
[0] == '.')
3808 struct ppc_link_hash_table
*htab
;
3810 htab
= (struct ppc_link_hash_table
*) table
;
3811 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3812 htab
->dot_syms
= eh
;
3819 /* Create a ppc64 ELF linker hash table. */
3821 static struct bfd_link_hash_table
*
3822 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3824 struct ppc_link_hash_table
*htab
;
3825 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3827 htab
= bfd_zmalloc (amt
);
3831 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3832 sizeof (struct ppc_link_hash_entry
)))
3838 /* Init the stub hash table too. */
3839 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3840 sizeof (struct ppc_stub_hash_entry
)))
3843 /* And the branch hash table. */
3844 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3845 sizeof (struct ppc_branch_hash_entry
)))
3848 /* Initializing two fields of the union is just cosmetic. We really
3849 only care about glist, but when compiled on a 32-bit host the
3850 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3851 debugger inspection of these fields look nicer. */
3852 htab
->elf
.init_got_refcount
.refcount
= 0;
3853 htab
->elf
.init_got_refcount
.glist
= NULL
;
3854 htab
->elf
.init_plt_refcount
.refcount
= 0;
3855 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3856 htab
->elf
.init_got_offset
.offset
= 0;
3857 htab
->elf
.init_got_offset
.glist
= NULL
;
3858 htab
->elf
.init_plt_offset
.offset
= 0;
3859 htab
->elf
.init_plt_offset
.glist
= NULL
;
3861 return &htab
->elf
.root
;
3864 /* Free the derived linker hash table. */
3867 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3869 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3871 bfd_hash_table_free (&ret
->stub_hash_table
);
3872 bfd_hash_table_free (&ret
->branch_hash_table
);
3873 _bfd_generic_link_hash_table_free (hash
);
3876 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3879 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3881 struct ppc_link_hash_table
*htab
;
3883 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3885 /* Always hook our dynamic sections into the first bfd, which is the
3886 linker created stub bfd. This ensures that the GOT header is at
3887 the start of the output TOC section. */
3888 htab
= ppc_hash_table (info
);
3889 htab
->stub_bfd
= abfd
;
3890 htab
->elf
.dynobj
= abfd
;
3893 /* Build a name for an entry in the stub hash table. */
3896 ppc_stub_name (const asection
*input_section
,
3897 const asection
*sym_sec
,
3898 const struct ppc_link_hash_entry
*h
,
3899 const Elf_Internal_Rela
*rel
)
3904 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3905 offsets from a sym as a branch target? In fact, we could
3906 probably assume the addend is always zero. */
3907 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3911 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3912 stub_name
= bfd_malloc (len
);
3913 if (stub_name
== NULL
)
3916 sprintf (stub_name
, "%08x.%s+%x",
3917 input_section
->id
& 0xffffffff,
3918 h
->elf
.root
.root
.string
,
3919 (int) rel
->r_addend
& 0xffffffff);
3923 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3924 stub_name
= bfd_malloc (len
);
3925 if (stub_name
== NULL
)
3928 sprintf (stub_name
, "%08x.%x:%x+%x",
3929 input_section
->id
& 0xffffffff,
3930 sym_sec
->id
& 0xffffffff,
3931 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3932 (int) rel
->r_addend
& 0xffffffff);
3934 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3935 stub_name
[len
- 2] = 0;
3939 /* Look up an entry in the stub hash. Stub entries are cached because
3940 creating the stub name takes a bit of time. */
3942 static struct ppc_stub_hash_entry
*
3943 ppc_get_stub_entry (const asection
*input_section
,
3944 const asection
*sym_sec
,
3945 struct ppc_link_hash_entry
*h
,
3946 const Elf_Internal_Rela
*rel
,
3947 struct ppc_link_hash_table
*htab
)
3949 struct ppc_stub_hash_entry
*stub_entry
;
3950 const asection
*id_sec
;
3952 /* If this input section is part of a group of sections sharing one
3953 stub section, then use the id of the first section in the group.
3954 Stub names need to include a section id, as there may well be
3955 more than one stub used to reach say, printf, and we need to
3956 distinguish between them. */
3957 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3959 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
3960 && h
->u
.stub_cache
->h
== h
3961 && h
->u
.stub_cache
->id_sec
== id_sec
)
3963 stub_entry
= h
->u
.stub_cache
;
3969 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3970 if (stub_name
== NULL
)
3973 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3974 stub_name
, FALSE
, FALSE
);
3976 h
->u
.stub_cache
= stub_entry
;
3984 /* Add a new stub entry to the stub hash. Not all fields of the new
3985 stub entry are initialised. */
3987 static struct ppc_stub_hash_entry
*
3988 ppc_add_stub (const char *stub_name
,
3990 struct ppc_link_hash_table
*htab
)
3994 struct ppc_stub_hash_entry
*stub_entry
;
3996 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3997 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3998 if (stub_sec
== NULL
)
4000 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4001 if (stub_sec
== NULL
)
4007 namelen
= strlen (link_sec
->name
);
4008 len
= namelen
+ sizeof (STUB_SUFFIX
);
4009 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4013 memcpy (s_name
, link_sec
->name
, namelen
);
4014 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4015 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4016 if (stub_sec
== NULL
)
4018 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4020 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4023 /* Enter this entry into the linker stub hash table. */
4024 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4026 if (stub_entry
== NULL
)
4028 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4029 section
->owner
, stub_name
);
4033 stub_entry
->stub_sec
= stub_sec
;
4034 stub_entry
->stub_offset
= 0;
4035 stub_entry
->id_sec
= link_sec
;
4039 /* Create sections for linker generated code. */
4042 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4044 struct ppc_link_hash_table
*htab
;
4047 htab
= ppc_hash_table (info
);
4049 /* Create .sfpr for code to save and restore fp regs. */
4050 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4051 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4052 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4054 if (htab
->sfpr
== NULL
4055 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4058 /* Create .glink for lazy dynamic linking support. */
4059 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4061 if (htab
->glink
== NULL
4062 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4065 /* Create branch lookup table for plt_branch stubs. */
4066 flags
= (SEC_ALLOC
| SEC_LOAD
4067 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4068 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4070 if (htab
->brlt
== NULL
4071 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4077 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4078 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4079 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4083 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4089 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4090 not already done. */
4093 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4095 asection
*got
, *relgot
;
4097 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4099 if (!is_ppc64_elf (abfd
))
4104 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4107 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4112 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4113 | SEC_LINKER_CREATED
);
4115 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4117 || !bfd_set_section_alignment (abfd
, got
, 3))
4120 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4121 flags
| SEC_READONLY
);
4123 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4126 ppc64_elf_tdata (abfd
)->got
= got
;
4127 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4131 /* Create the dynamic sections, and set up shortcuts. */
4134 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4136 struct ppc_link_hash_table
*htab
;
4138 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4141 htab
= ppc_hash_table (info
);
4143 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4144 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4145 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4146 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4148 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4150 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4151 || (!info
->shared
&& !htab
->relbss
))
4157 /* Merge PLT info on FROM with that on TO. */
4160 move_plt_plist (struct ppc_link_hash_entry
*from
,
4161 struct ppc_link_hash_entry
*to
)
4163 if (from
->elf
.plt
.plist
!= NULL
)
4165 if (to
->elf
.plt
.plist
!= NULL
)
4167 struct plt_entry
**entp
;
4168 struct plt_entry
*ent
;
4170 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4172 struct plt_entry
*dent
;
4174 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4175 if (dent
->addend
== ent
->addend
)
4177 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4184 *entp
= to
->elf
.plt
.plist
;
4187 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4188 from
->elf
.plt
.plist
= NULL
;
4192 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4195 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4196 struct elf_link_hash_entry
*dir
,
4197 struct elf_link_hash_entry
*ind
)
4199 struct ppc_link_hash_entry
*edir
, *eind
;
4201 edir
= (struct ppc_link_hash_entry
*) dir
;
4202 eind
= (struct ppc_link_hash_entry
*) ind
;
4204 /* Copy over any dynamic relocs we may have on the indirect sym. */
4205 if (eind
->dyn_relocs
!= NULL
)
4207 if (edir
->dyn_relocs
!= NULL
)
4209 struct ppc_dyn_relocs
**pp
;
4210 struct ppc_dyn_relocs
*p
;
4212 /* Add reloc counts against the indirect sym to the direct sym
4213 list. Merge any entries against the same section. */
4214 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4216 struct ppc_dyn_relocs
*q
;
4218 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4219 if (q
->sec
== p
->sec
)
4221 q
->pc_count
+= p
->pc_count
;
4222 q
->count
+= p
->count
;
4229 *pp
= edir
->dyn_relocs
;
4232 edir
->dyn_relocs
= eind
->dyn_relocs
;
4233 eind
->dyn_relocs
= NULL
;
4236 edir
->is_func
|= eind
->is_func
;
4237 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4238 edir
->tls_mask
|= eind
->tls_mask
;
4240 /* If called to transfer flags for a weakdef during processing
4241 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4242 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4243 if (!(ELIMINATE_COPY_RELOCS
4244 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4245 && edir
->elf
.dynamic_adjusted
))
4246 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4248 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4249 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4250 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4251 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4253 /* If we were called to copy over info for a weak sym, that's all. */
4254 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4257 /* Copy over got entries that we may have already seen to the
4258 symbol which just became indirect. */
4259 if (eind
->elf
.got
.glist
!= NULL
)
4261 if (edir
->elf
.got
.glist
!= NULL
)
4263 struct got_entry
**entp
;
4264 struct got_entry
*ent
;
4266 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4268 struct got_entry
*dent
;
4270 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4271 if (dent
->addend
== ent
->addend
4272 && dent
->owner
== ent
->owner
4273 && dent
->tls_type
== ent
->tls_type
)
4275 dent
->got
.refcount
+= ent
->got
.refcount
;
4282 *entp
= edir
->elf
.got
.glist
;
4285 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4286 eind
->elf
.got
.glist
= NULL
;
4289 /* And plt entries. */
4290 move_plt_plist (eind
, edir
);
4292 if (eind
->elf
.dynindx
!= -1)
4294 if (edir
->elf
.dynindx
!= -1)
4295 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4296 edir
->elf
.dynstr_index
);
4297 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4298 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4299 eind
->elf
.dynindx
= -1;
4300 eind
->elf
.dynstr_index
= 0;
4304 /* Find the function descriptor hash entry from the given function code
4305 hash entry FH. Link the entries via their OH fields. */
4307 static struct ppc_link_hash_entry
*
4308 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4310 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4314 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4316 fdh
= (struct ppc_link_hash_entry
*)
4317 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4320 fdh
->is_func_descriptor
= 1;
4330 /* Make a fake function descriptor sym for the code sym FH. */
4332 static struct ppc_link_hash_entry
*
4333 make_fdh (struct bfd_link_info
*info
,
4334 struct ppc_link_hash_entry
*fh
)
4338 struct bfd_link_hash_entry
*bh
;
4339 struct ppc_link_hash_entry
*fdh
;
4341 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4342 newsym
= bfd_make_empty_symbol (abfd
);
4343 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4344 newsym
->section
= bfd_und_section_ptr
;
4346 newsym
->flags
= BSF_WEAK
;
4349 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4350 newsym
->flags
, newsym
->section
,
4351 newsym
->value
, NULL
, FALSE
, FALSE
,
4355 fdh
= (struct ppc_link_hash_entry
*) bh
;
4356 fdh
->elf
.non_elf
= 0;
4358 fdh
->is_func_descriptor
= 1;
4365 /* Fix function descriptor symbols defined in .opd sections to be
4369 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
4370 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4371 Elf_Internal_Sym
*isym
,
4372 const char **name ATTRIBUTE_UNUSED
,
4373 flagword
*flags ATTRIBUTE_UNUSED
,
4375 bfd_vma
*value ATTRIBUTE_UNUSED
)
4378 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4379 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4384 /* This function makes an old ABI object reference to ".bar" cause the
4385 inclusion of a new ABI object archive that defines "bar".
4386 NAME is a symbol defined in an archive. Return a symbol in the hash
4387 table that might be satisfied by the archive symbols. */
4389 static struct elf_link_hash_entry
*
4390 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4391 struct bfd_link_info
*info
,
4394 struct elf_link_hash_entry
*h
;
4398 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4400 /* Don't return this sym if it is a fake function descriptor
4401 created by add_symbol_adjust. */
4402 && !(h
->root
.type
== bfd_link_hash_undefweak
4403 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4409 len
= strlen (name
);
4410 dot_name
= bfd_alloc (abfd
, len
+ 2);
4411 if (dot_name
== NULL
)
4412 return (struct elf_link_hash_entry
*) 0 - 1;
4414 memcpy (dot_name
+ 1, name
, len
+ 1);
4415 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4416 bfd_release (abfd
, dot_name
);
4420 /* This function satisfies all old ABI object references to ".bar" if a
4421 new ABI object defines "bar". Well, at least, undefined dot symbols
4422 are made weak. This stops later archive searches from including an
4423 object if we already have a function descriptor definition. It also
4424 prevents the linker complaining about undefined symbols.
4425 We also check and correct mismatched symbol visibility here. The
4426 most restrictive visibility of the function descriptor and the
4427 function entry symbol is used. */
4430 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4432 struct ppc_link_hash_table
*htab
;
4433 struct ppc_link_hash_entry
*fdh
;
4435 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4438 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4439 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4441 if (eh
->elf
.root
.root
.string
[0] != '.')
4444 htab
= ppc_hash_table (info
);
4445 fdh
= get_fdh (eh
, htab
);
4447 && !info
->relocatable
4448 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4449 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4450 && eh
->elf
.ref_regular
)
4452 /* Make an undefweak function descriptor sym, which is enough to
4453 pull in an --as-needed shared lib, but won't cause link
4454 errors. Archives are handled elsewhere. */
4455 fdh
= make_fdh (info
, eh
);
4459 fdh
->elf
.ref_regular
= 1;
4461 else if (fdh
!= NULL
)
4463 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4464 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4465 if (entry_vis
< descr_vis
)
4466 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4467 else if (entry_vis
> descr_vis
)
4468 eh
->elf
.other
+= descr_vis
- entry_vis
;
4470 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4471 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4472 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4474 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4475 eh
->was_undefined
= 1;
4476 htab
->twiddled_syms
= 1;
4483 /* Process list of dot-symbols we made in link_hash_newfunc. */
4486 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4488 struct ppc_link_hash_table
*htab
;
4489 struct ppc_link_hash_entry
**p
, *eh
;
4491 htab
= ppc_hash_table (info
);
4492 if (!is_ppc64_elf (info
->output_bfd
))
4495 if (is_ppc64_elf (ibfd
))
4497 p
= &htab
->dot_syms
;
4498 while ((eh
= *p
) != NULL
)
4501 if (!add_symbol_adjust (eh
, info
))
4503 p
= &eh
->u
.next_dot_sym
;
4507 /* Clear the list for non-ppc64 input files. */
4508 p
= &htab
->dot_syms
;
4509 while ((eh
= *p
) != NULL
)
4512 p
= &eh
->u
.next_dot_sym
;
4515 /* We need to fix the undefs list for any syms we have twiddled to
4517 if (htab
->twiddled_syms
)
4519 bfd_link_repair_undef_list (&htab
->elf
.root
);
4520 htab
->twiddled_syms
= 0;
4525 /* Undo hash table changes when an --as-needed input file is determined
4526 not to be needed. */
4529 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4530 struct bfd_link_info
*info
)
4532 ppc_hash_table (info
)->dot_syms
= NULL
;
4537 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4538 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4540 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4541 char *local_got_tls_masks
;
4543 if (local_got_ents
== NULL
)
4545 bfd_size_type size
= symtab_hdr
->sh_info
;
4547 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4548 local_got_ents
= bfd_zalloc (abfd
, size
);
4549 if (local_got_ents
== NULL
)
4551 elf_local_got_ents (abfd
) = local_got_ents
;
4554 if ((tls_type
& TLS_EXPLICIT
) == 0)
4556 struct got_entry
*ent
;
4558 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4559 if (ent
->addend
== r_addend
4560 && ent
->owner
== abfd
4561 && ent
->tls_type
== tls_type
)
4565 bfd_size_type amt
= sizeof (*ent
);
4566 ent
= bfd_alloc (abfd
, amt
);
4569 ent
->next
= local_got_ents
[r_symndx
];
4570 ent
->addend
= r_addend
;
4572 ent
->tls_type
= tls_type
;
4573 ent
->got
.refcount
= 0;
4574 local_got_ents
[r_symndx
] = ent
;
4576 ent
->got
.refcount
+= 1;
4579 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4580 local_got_tls_masks
[r_symndx
] |= tls_type
;
4585 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4587 struct plt_entry
*ent
;
4589 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4590 if (ent
->addend
== addend
)
4594 bfd_size_type amt
= sizeof (*ent
);
4595 ent
= bfd_alloc (abfd
, amt
);
4598 ent
->next
= eh
->elf
.plt
.plist
;
4599 ent
->addend
= addend
;
4600 ent
->plt
.refcount
= 0;
4601 eh
->elf
.plt
.plist
= ent
;
4603 ent
->plt
.refcount
+= 1;
4604 eh
->elf
.needs_plt
= 1;
4605 if (eh
->elf
.root
.root
.string
[0] == '.'
4606 && eh
->elf
.root
.root
.string
[1] != '\0')
4611 /* Look through the relocs for a section during the first phase, and
4612 calculate needed space in the global offset table, procedure
4613 linkage table, and dynamic reloc sections. */
4616 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4617 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4619 struct ppc_link_hash_table
*htab
;
4620 Elf_Internal_Shdr
*symtab_hdr
;
4621 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4622 const Elf_Internal_Rela
*rel
;
4623 const Elf_Internal_Rela
*rel_end
;
4625 asection
**opd_sym_map
;
4626 struct elf_link_hash_entry
*tga
, *dottga
;
4628 if (info
->relocatable
)
4631 /* Don't do anything special with non-loaded, non-alloced sections.
4632 In particular, any relocs in such sections should not affect GOT
4633 and PLT reference counting (ie. we don't allow them to create GOT
4634 or PLT entries), there's no possibility or desire to optimize TLS
4635 relocs, and there's not much point in propagating relocs to shared
4636 libs that the dynamic linker won't relocate. */
4637 if ((sec
->flags
& SEC_ALLOC
) == 0)
4640 BFD_ASSERT (is_ppc64_elf (abfd
));
4642 htab
= ppc_hash_table (info
);
4643 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4644 FALSE
, FALSE
, TRUE
);
4645 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4646 FALSE
, FALSE
, TRUE
);
4647 symtab_hdr
= &elf_symtab_hdr (abfd
);
4649 sym_hashes
= elf_sym_hashes (abfd
);
4650 sym_hashes_end
= (sym_hashes
4651 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4652 - symtab_hdr
->sh_info
);
4656 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4658 /* Garbage collection needs some extra help with .opd sections.
4659 We don't want to necessarily keep everything referenced by
4660 relocs in .opd, as that would keep all functions. Instead,
4661 if we reference an .opd symbol (a function descriptor), we
4662 want to keep the function code symbol's section. This is
4663 easy for global symbols, but for local syms we need to keep
4664 information about the associated function section. */
4667 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4668 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4669 if (opd_sym_map
== NULL
)
4671 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4672 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4673 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4676 if (htab
->sfpr
== NULL
4677 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4680 rel_end
= relocs
+ sec
->reloc_count
;
4681 for (rel
= relocs
; rel
< rel_end
; rel
++)
4683 unsigned long r_symndx
;
4684 struct elf_link_hash_entry
*h
;
4685 enum elf_ppc64_reloc_type r_type
;
4687 struct _ppc64_elf_section_data
*ppc64_sec
;
4689 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4690 if (r_symndx
< symtab_hdr
->sh_info
)
4694 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4695 while (h
->root
.type
== bfd_link_hash_indirect
4696 || h
->root
.type
== bfd_link_hash_warning
)
4697 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4701 r_type
= ELF64_R_TYPE (rel
->r_info
);
4702 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4710 case R_PPC64_REL14_BRTAKEN
:
4711 case R_PPC64_REL14_BRNTAKEN
:
4712 case R_PPC64_ADDR24
:
4713 case R_PPC64_ADDR14
:
4714 case R_PPC64_ADDR14_BRTAKEN
:
4715 case R_PPC64_ADDR14_BRNTAKEN
:
4717 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4718 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4719 /* We have a new-style __tls_get_addr call with a marker
4723 /* Mark this section as having an old-style call. */
4724 sec
->has_tls_get_addr_call
= 1;
4732 /* These special tls relocs tie a call to __tls_get_addr with
4733 its parameter symbol. */
4736 case R_PPC64_GOT_TLSLD16
:
4737 case R_PPC64_GOT_TLSLD16_LO
:
4738 case R_PPC64_GOT_TLSLD16_HI
:
4739 case R_PPC64_GOT_TLSLD16_HA
:
4740 tls_type
= TLS_TLS
| TLS_LD
;
4743 case R_PPC64_GOT_TLSGD16
:
4744 case R_PPC64_GOT_TLSGD16_LO
:
4745 case R_PPC64_GOT_TLSGD16_HI
:
4746 case R_PPC64_GOT_TLSGD16_HA
:
4747 tls_type
= TLS_TLS
| TLS_GD
;
4750 case R_PPC64_GOT_TPREL16_DS
:
4751 case R_PPC64_GOT_TPREL16_LO_DS
:
4752 case R_PPC64_GOT_TPREL16_HI
:
4753 case R_PPC64_GOT_TPREL16_HA
:
4754 if (!info
->executable
)
4755 info
->flags
|= DF_STATIC_TLS
;
4756 tls_type
= TLS_TLS
| TLS_TPREL
;
4759 case R_PPC64_GOT_DTPREL16_DS
:
4760 case R_PPC64_GOT_DTPREL16_LO_DS
:
4761 case R_PPC64_GOT_DTPREL16_HI
:
4762 case R_PPC64_GOT_DTPREL16_HA
:
4763 tls_type
= TLS_TLS
| TLS_DTPREL
;
4765 sec
->has_tls_reloc
= 1;
4769 case R_PPC64_GOT16_DS
:
4770 case R_PPC64_GOT16_HA
:
4771 case R_PPC64_GOT16_HI
:
4772 case R_PPC64_GOT16_LO
:
4773 case R_PPC64_GOT16_LO_DS
:
4774 /* This symbol requires a global offset table entry. */
4775 sec
->has_toc_reloc
= 1;
4776 if (ppc64_elf_tdata (abfd
)->got
== NULL
4777 && !create_got_section (abfd
, info
))
4782 struct ppc_link_hash_entry
*eh
;
4783 struct got_entry
*ent
;
4785 eh
= (struct ppc_link_hash_entry
*) h
;
4786 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4787 if (ent
->addend
== rel
->r_addend
4788 && ent
->owner
== abfd
4789 && ent
->tls_type
== tls_type
)
4793 bfd_size_type amt
= sizeof (*ent
);
4794 ent
= bfd_alloc (abfd
, amt
);
4797 ent
->next
= eh
->elf
.got
.glist
;
4798 ent
->addend
= rel
->r_addend
;
4800 ent
->tls_type
= tls_type
;
4801 ent
->got
.refcount
= 0;
4802 eh
->elf
.got
.glist
= ent
;
4804 ent
->got
.refcount
+= 1;
4805 eh
->tls_mask
|= tls_type
;
4808 /* This is a global offset table entry for a local symbol. */
4809 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4810 rel
->r_addend
, tls_type
))
4814 case R_PPC64_PLT16_HA
:
4815 case R_PPC64_PLT16_HI
:
4816 case R_PPC64_PLT16_LO
:
4819 /* This symbol requires a procedure linkage table entry. We
4820 actually build the entry in adjust_dynamic_symbol,
4821 because this might be a case of linking PIC code without
4822 linking in any dynamic objects, in which case we don't
4823 need to generate a procedure linkage table after all. */
4826 /* It does not make sense to have a procedure linkage
4827 table entry for a local symbol. */
4828 bfd_set_error (bfd_error_bad_value
);
4832 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4837 /* The following relocations don't need to propagate the
4838 relocation if linking a shared object since they are
4839 section relative. */
4840 case R_PPC64_SECTOFF
:
4841 case R_PPC64_SECTOFF_LO
:
4842 case R_PPC64_SECTOFF_HI
:
4843 case R_PPC64_SECTOFF_HA
:
4844 case R_PPC64_SECTOFF_DS
:
4845 case R_PPC64_SECTOFF_LO_DS
:
4846 case R_PPC64_DTPREL16
:
4847 case R_PPC64_DTPREL16_LO
:
4848 case R_PPC64_DTPREL16_HI
:
4849 case R_PPC64_DTPREL16_HA
:
4850 case R_PPC64_DTPREL16_DS
:
4851 case R_PPC64_DTPREL16_LO_DS
:
4852 case R_PPC64_DTPREL16_HIGHER
:
4853 case R_PPC64_DTPREL16_HIGHERA
:
4854 case R_PPC64_DTPREL16_HIGHEST
:
4855 case R_PPC64_DTPREL16_HIGHESTA
:
4860 case R_PPC64_TOC16_LO
:
4861 case R_PPC64_TOC16_HI
:
4862 case R_PPC64_TOC16_HA
:
4863 case R_PPC64_TOC16_DS
:
4864 case R_PPC64_TOC16_LO_DS
:
4865 sec
->has_toc_reloc
= 1;
4868 /* This relocation describes the C++ object vtable hierarchy.
4869 Reconstruct it for later use during GC. */
4870 case R_PPC64_GNU_VTINHERIT
:
4871 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4875 /* This relocation describes which C++ vtable entries are actually
4876 used. Record for later use during GC. */
4877 case R_PPC64_GNU_VTENTRY
:
4878 BFD_ASSERT (h
!= NULL
);
4880 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4885 case R_PPC64_REL14_BRTAKEN
:
4886 case R_PPC64_REL14_BRNTAKEN
:
4888 asection
*dest
= NULL
;
4890 /* Heuristic: If jumping outside our section, chances are
4891 we are going to need a stub. */
4894 /* If the sym is weak it may be overridden later, so
4895 don't assume we know where a weak sym lives. */
4896 if (h
->root
.type
== bfd_link_hash_defined
)
4897 dest
= h
->root
.u
.def
.section
;
4901 Elf_Internal_Sym
*isym
;
4903 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4908 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4912 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
4919 /* We may need a .plt entry if the function this reloc
4920 refers to is in a shared lib. */
4921 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4924 if (h
== tga
|| h
== dottga
)
4925 sec
->has_tls_reloc
= 1;
4929 case R_PPC64_TPREL64
:
4930 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4931 if (!info
->executable
)
4932 info
->flags
|= DF_STATIC_TLS
;
4935 case R_PPC64_DTPMOD64
:
4936 if (rel
+ 1 < rel_end
4937 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4938 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4939 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4941 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4944 case R_PPC64_DTPREL64
:
4945 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4947 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4948 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4949 /* This is the second reloc of a dtpmod, dtprel pair.
4950 Don't mark with TLS_DTPREL. */
4954 sec
->has_tls_reloc
= 1;
4957 struct ppc_link_hash_entry
*eh
;
4958 eh
= (struct ppc_link_hash_entry
*) h
;
4959 eh
->tls_mask
|= tls_type
;
4962 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4963 rel
->r_addend
, tls_type
))
4966 ppc64_sec
= ppc64_elf_section_data (sec
);
4967 if (ppc64_sec
->sec_type
!= sec_toc
)
4971 /* One extra to simplify get_tls_mask. */
4972 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
4973 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
4974 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
4976 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
4977 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
4978 if (ppc64_sec
->u
.toc
.add
== NULL
)
4980 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
4981 ppc64_sec
->sec_type
= sec_toc
;
4983 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4984 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
4985 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
4987 /* Mark the second slot of a GD or LD entry.
4988 -1 to indicate GD and -2 to indicate LD. */
4989 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4990 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
4991 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4992 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
4995 case R_PPC64_TPREL16
:
4996 case R_PPC64_TPREL16_LO
:
4997 case R_PPC64_TPREL16_HI
:
4998 case R_PPC64_TPREL16_HA
:
4999 case R_PPC64_TPREL16_DS
:
5000 case R_PPC64_TPREL16_LO_DS
:
5001 case R_PPC64_TPREL16_HIGHER
:
5002 case R_PPC64_TPREL16_HIGHERA
:
5003 case R_PPC64_TPREL16_HIGHEST
:
5004 case R_PPC64_TPREL16_HIGHESTA
:
5007 if (!info
->executable
)
5008 info
->flags
|= DF_STATIC_TLS
;
5013 case R_PPC64_ADDR64
:
5014 if (opd_sym_map
!= NULL
5015 && rel
+ 1 < rel_end
5016 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5020 if (h
->root
.root
.string
[0] == '.'
5021 && h
->root
.root
.string
[1] != 0
5022 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5025 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5030 Elf_Internal_Sym
*isym
;
5032 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5037 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5038 if (s
!= NULL
&& s
!= sec
)
5039 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5047 case R_PPC64_ADDR14
:
5048 case R_PPC64_ADDR14_BRNTAKEN
:
5049 case R_PPC64_ADDR14_BRTAKEN
:
5050 case R_PPC64_ADDR16
:
5051 case R_PPC64_ADDR16_DS
:
5052 case R_PPC64_ADDR16_HA
:
5053 case R_PPC64_ADDR16_HI
:
5054 case R_PPC64_ADDR16_HIGHER
:
5055 case R_PPC64_ADDR16_HIGHERA
:
5056 case R_PPC64_ADDR16_HIGHEST
:
5057 case R_PPC64_ADDR16_HIGHESTA
:
5058 case R_PPC64_ADDR16_LO
:
5059 case R_PPC64_ADDR16_LO_DS
:
5060 case R_PPC64_ADDR24
:
5061 case R_PPC64_ADDR32
:
5062 case R_PPC64_UADDR16
:
5063 case R_PPC64_UADDR32
:
5064 case R_PPC64_UADDR64
:
5066 if (h
!= NULL
&& !info
->shared
)
5067 /* We may need a copy reloc. */
5070 /* Don't propagate .opd relocs. */
5071 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5074 /* If we are creating a shared library, and this is a reloc
5075 against a global symbol, or a non PC relative reloc
5076 against a local symbol, then we need to copy the reloc
5077 into the shared library. However, if we are linking with
5078 -Bsymbolic, we do not need to copy a reloc against a
5079 global symbol which is defined in an object we are
5080 including in the link (i.e., DEF_REGULAR is set). At
5081 this point we have not seen all the input files, so it is
5082 possible that DEF_REGULAR is not set now but will be set
5083 later (it is never cleared). In case of a weak definition,
5084 DEF_REGULAR may be cleared later by a strong definition in
5085 a shared library. We account for that possibility below by
5086 storing information in the dyn_relocs field of the hash
5087 table entry. A similar situation occurs when creating
5088 shared libraries and symbol visibility changes render the
5091 If on the other hand, we are creating an executable, we
5092 may need to keep relocations for symbols satisfied by a
5093 dynamic library if we manage to avoid copy relocs for the
5097 && (must_be_dyn_reloc (info
, r_type
)
5099 && (! info
->symbolic
5100 || h
->root
.type
== bfd_link_hash_defweak
5101 || !h
->def_regular
))))
5102 || (ELIMINATE_COPY_RELOCS
5105 && (h
->root
.type
== bfd_link_hash_defweak
5106 || !h
->def_regular
)))
5108 struct ppc_dyn_relocs
*p
;
5109 struct ppc_dyn_relocs
**head
;
5111 /* We must copy these reloc types into the output file.
5112 Create a reloc section in dynobj and make room for
5116 sreloc
= _bfd_elf_make_dynamic_reloc_section
5117 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5123 /* If this is a global symbol, we count the number of
5124 relocations we need for this symbol. */
5127 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5131 /* Track dynamic relocs needed for local syms too.
5132 We really need local syms available to do this
5136 Elf_Internal_Sym
*isym
;
5138 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5143 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5147 vpp
= &elf_section_data (s
)->local_dynrel
;
5148 head
= (struct ppc_dyn_relocs
**) vpp
;
5152 if (p
== NULL
|| p
->sec
!= sec
)
5154 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5165 if (!must_be_dyn_reloc (info
, r_type
))
5178 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5179 of the code entry point, and its section. */
5182 opd_entry_value (asection
*opd_sec
,
5184 asection
**code_sec
,
5187 bfd
*opd_bfd
= opd_sec
->owner
;
5188 Elf_Internal_Rela
*relocs
;
5189 Elf_Internal_Rela
*lo
, *hi
, *look
;
5192 /* No relocs implies we are linking a --just-symbols object. */
5193 if (opd_sec
->reloc_count
== 0)
5197 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5198 return (bfd_vma
) -1;
5200 if (code_sec
!= NULL
)
5202 asection
*sec
, *likely
= NULL
;
5203 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5205 && (sec
->flags
& SEC_LOAD
) != 0
5206 && (sec
->flags
& SEC_ALLOC
) != 0)
5211 if (code_off
!= NULL
)
5212 *code_off
= val
- likely
->vma
;
5218 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5220 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5222 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5224 /* Go find the opd reloc at the sym address. */
5226 BFD_ASSERT (lo
!= NULL
);
5227 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5231 look
= lo
+ (hi
- lo
) / 2;
5232 if (look
->r_offset
< offset
)
5234 else if (look
->r_offset
> offset
)
5238 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5240 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5241 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5243 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5246 if (symndx
< symtab_hdr
->sh_info
)
5248 Elf_Internal_Sym
*sym
;
5250 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5253 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5254 symtab_hdr
->sh_info
,
5255 0, NULL
, NULL
, NULL
);
5258 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5262 val
= sym
->st_value
;
5263 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5264 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5268 struct elf_link_hash_entry
**sym_hashes
;
5269 struct elf_link_hash_entry
*rh
;
5271 sym_hashes
= elf_sym_hashes (opd_bfd
);
5272 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5273 while (rh
->root
.type
== bfd_link_hash_indirect
5274 || rh
->root
.type
== bfd_link_hash_warning
)
5275 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
5276 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5277 || rh
->root
.type
== bfd_link_hash_defweak
);
5278 val
= rh
->root
.u
.def
.value
;
5279 sec
= rh
->root
.u
.def
.section
;
5281 val
+= look
->r_addend
;
5282 if (code_off
!= NULL
)
5284 if (code_sec
!= NULL
)
5286 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5287 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5296 /* Mark all our entry sym sections, both opd and code section. */
5299 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5301 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5302 struct bfd_sym_chain
*sym
;
5304 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5306 struct ppc_link_hash_entry
*eh
;
5309 eh
= (struct ppc_link_hash_entry
*)
5310 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
5313 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5314 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5317 if (eh
->is_func_descriptor
5318 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5319 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5321 sec
= eh
->oh
->elf
.root
.u
.def
.section
;
5322 sec
->flags
|= SEC_KEEP
;
5324 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5325 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5326 eh
->elf
.root
.u
.def
.value
,
5327 &sec
, NULL
) != (bfd_vma
) -1)
5328 sec
->flags
|= SEC_KEEP
;
5330 sec
= eh
->elf
.root
.u
.def
.section
;
5331 sec
->flags
|= SEC_KEEP
;
5335 /* Mark sections containing dynamically referenced symbols. When
5336 building shared libraries, we must assume that any visible symbol is
5340 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5342 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5343 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5345 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5346 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5348 /* Dynamic linking info is on the func descriptor sym. */
5350 && eh
->oh
->is_func_descriptor
5351 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5352 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5355 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5356 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5357 && (eh
->elf
.ref_dynamic
5358 || (!info
->executable
5359 && eh
->elf
.def_regular
5360 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5361 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5365 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5367 /* Function descriptor syms cause the associated
5368 function code sym section to be marked. */
5369 if (eh
->is_func_descriptor
5370 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5371 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5372 eh
->oh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5373 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5374 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5375 eh
->elf
.root
.u
.def
.value
,
5376 &code_sec
, NULL
) != (bfd_vma
) -1)
5377 code_sec
->flags
|= SEC_KEEP
;
5383 /* Return the section that should be marked against GC for a given
5387 ppc64_elf_gc_mark_hook (asection
*sec
,
5388 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
5389 Elf_Internal_Rela
*rel
,
5390 struct elf_link_hash_entry
*h
,
5391 Elf_Internal_Sym
*sym
)
5395 /* Syms return NULL if we're marking .opd, so we avoid marking all
5396 function sections, as all functions are referenced in .opd. */
5398 if (get_opd_info (sec
) != NULL
)
5403 enum elf_ppc64_reloc_type r_type
;
5404 struct ppc_link_hash_entry
*eh
;
5406 r_type
= ELF64_R_TYPE (rel
->r_info
);
5409 case R_PPC64_GNU_VTINHERIT
:
5410 case R_PPC64_GNU_VTENTRY
:
5414 switch (h
->root
.type
)
5416 case bfd_link_hash_defined
:
5417 case bfd_link_hash_defweak
:
5418 eh
= (struct ppc_link_hash_entry
*) h
;
5420 && eh
->oh
->is_func_descriptor
5421 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5422 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5425 /* Function descriptor syms cause the associated
5426 function code sym section to be marked. */
5427 if (eh
->is_func_descriptor
5428 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5429 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5431 /* They also mark their opd section. */
5432 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5434 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5436 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5437 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5438 eh
->elf
.root
.u
.def
.value
,
5439 &rsec
, NULL
) != (bfd_vma
) -1)
5440 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5442 rsec
= h
->root
.u
.def
.section
;
5445 case bfd_link_hash_common
:
5446 rsec
= h
->root
.u
.c
.p
->section
;
5456 struct _opd_sec_data
*opd
;
5458 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5459 opd
= get_opd_info (rsec
);
5460 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5464 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5471 /* Update the .got, .plt. and dynamic reloc reference counts for the
5472 section being removed. */
5475 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5476 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5478 struct ppc_link_hash_table
*htab
;
5479 Elf_Internal_Shdr
*symtab_hdr
;
5480 struct elf_link_hash_entry
**sym_hashes
;
5481 struct got_entry
**local_got_ents
;
5482 const Elf_Internal_Rela
*rel
, *relend
;
5484 if (info
->relocatable
)
5487 if ((sec
->flags
& SEC_ALLOC
) == 0)
5490 elf_section_data (sec
)->local_dynrel
= NULL
;
5492 htab
= ppc_hash_table (info
);
5493 symtab_hdr
= &elf_symtab_hdr (abfd
);
5494 sym_hashes
= elf_sym_hashes (abfd
);
5495 local_got_ents
= elf_local_got_ents (abfd
);
5497 relend
= relocs
+ sec
->reloc_count
;
5498 for (rel
= relocs
; rel
< relend
; rel
++)
5500 unsigned long r_symndx
;
5501 enum elf_ppc64_reloc_type r_type
;
5502 struct elf_link_hash_entry
*h
= NULL
;
5505 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5506 r_type
= ELF64_R_TYPE (rel
->r_info
);
5507 if (r_symndx
>= symtab_hdr
->sh_info
)
5509 struct ppc_link_hash_entry
*eh
;
5510 struct ppc_dyn_relocs
**pp
;
5511 struct ppc_dyn_relocs
*p
;
5513 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5514 while (h
->root
.type
== bfd_link_hash_indirect
5515 || h
->root
.type
== bfd_link_hash_warning
)
5516 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5517 eh
= (struct ppc_link_hash_entry
*) h
;
5519 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5522 /* Everything must go for SEC. */
5530 case R_PPC64_GOT_TLSLD16
:
5531 case R_PPC64_GOT_TLSLD16_LO
:
5532 case R_PPC64_GOT_TLSLD16_HI
:
5533 case R_PPC64_GOT_TLSLD16_HA
:
5534 tls_type
= TLS_TLS
| TLS_LD
;
5537 case R_PPC64_GOT_TLSGD16
:
5538 case R_PPC64_GOT_TLSGD16_LO
:
5539 case R_PPC64_GOT_TLSGD16_HI
:
5540 case R_PPC64_GOT_TLSGD16_HA
:
5541 tls_type
= TLS_TLS
| TLS_GD
;
5544 case R_PPC64_GOT_TPREL16_DS
:
5545 case R_PPC64_GOT_TPREL16_LO_DS
:
5546 case R_PPC64_GOT_TPREL16_HI
:
5547 case R_PPC64_GOT_TPREL16_HA
:
5548 tls_type
= TLS_TLS
| TLS_TPREL
;
5551 case R_PPC64_GOT_DTPREL16_DS
:
5552 case R_PPC64_GOT_DTPREL16_LO_DS
:
5553 case R_PPC64_GOT_DTPREL16_HI
:
5554 case R_PPC64_GOT_DTPREL16_HA
:
5555 tls_type
= TLS_TLS
| TLS_DTPREL
;
5559 case R_PPC64_GOT16_DS
:
5560 case R_PPC64_GOT16_HA
:
5561 case R_PPC64_GOT16_HI
:
5562 case R_PPC64_GOT16_LO
:
5563 case R_PPC64_GOT16_LO_DS
:
5566 struct got_entry
*ent
;
5571 ent
= local_got_ents
[r_symndx
];
5573 for (; ent
!= NULL
; ent
= ent
->next
)
5574 if (ent
->addend
== rel
->r_addend
5575 && ent
->owner
== abfd
5576 && ent
->tls_type
== tls_type
)
5580 if (ent
->got
.refcount
> 0)
5581 ent
->got
.refcount
-= 1;
5585 case R_PPC64_PLT16_HA
:
5586 case R_PPC64_PLT16_HI
:
5587 case R_PPC64_PLT16_LO
:
5591 case R_PPC64_REL14_BRNTAKEN
:
5592 case R_PPC64_REL14_BRTAKEN
:
5596 struct plt_entry
*ent
;
5598 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5599 if (ent
->addend
== rel
->r_addend
)
5603 if (ent
->plt
.refcount
> 0)
5604 ent
->plt
.refcount
-= 1;
5615 /* The maximum size of .sfpr. */
5616 #define SFPR_MAX (218*4)
5618 struct sfpr_def_parms
5620 const char name
[12];
5621 unsigned char lo
, hi
;
5622 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5623 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5626 /* Auto-generate _save*, _rest* functions in .sfpr. */
5629 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5631 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5633 size_t len
= strlen (parm
->name
);
5634 bfd_boolean writing
= FALSE
;
5637 memcpy (sym
, parm
->name
, len
);
5640 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5642 struct elf_link_hash_entry
*h
;
5644 sym
[len
+ 0] = i
/ 10 + '0';
5645 sym
[len
+ 1] = i
% 10 + '0';
5646 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5650 h
->root
.type
= bfd_link_hash_defined
;
5651 h
->root
.u
.def
.section
= htab
->sfpr
;
5652 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5655 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5657 if (htab
->sfpr
->contents
== NULL
)
5659 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5660 if (htab
->sfpr
->contents
== NULL
)
5666 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5668 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5670 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5671 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5679 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5681 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5686 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5688 p
= savegpr0 (abfd
, p
, r
);
5689 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5691 bfd_put_32 (abfd
, BLR
, p
);
5696 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5698 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5703 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5705 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5707 p
= restgpr0 (abfd
, p
, r
);
5708 bfd_put_32 (abfd
, MTLR_R0
, p
);
5712 p
= restgpr0 (abfd
, p
, 30);
5713 p
= restgpr0 (abfd
, p
, 31);
5715 bfd_put_32 (abfd
, BLR
, p
);
5720 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5722 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5727 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5729 p
= savegpr1 (abfd
, p
, r
);
5730 bfd_put_32 (abfd
, BLR
, p
);
5735 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5737 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5742 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5744 p
= restgpr1 (abfd
, p
, r
);
5745 bfd_put_32 (abfd
, BLR
, p
);
5750 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5752 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5757 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5759 p
= savefpr (abfd
, p
, r
);
5760 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5762 bfd_put_32 (abfd
, BLR
, p
);
5767 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5769 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5774 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5776 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5778 p
= restfpr (abfd
, p
, r
);
5779 bfd_put_32 (abfd
, MTLR_R0
, p
);
5783 p
= restfpr (abfd
, p
, 30);
5784 p
= restfpr (abfd
, p
, 31);
5786 bfd_put_32 (abfd
, BLR
, p
);
5791 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5793 p
= savefpr (abfd
, p
, r
);
5794 bfd_put_32 (abfd
, BLR
, p
);
5799 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5801 p
= restfpr (abfd
, p
, r
);
5802 bfd_put_32 (abfd
, BLR
, p
);
5807 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5809 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5811 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5816 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5818 p
= savevr (abfd
, p
, r
);
5819 bfd_put_32 (abfd
, BLR
, p
);
5824 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5826 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5828 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5833 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5835 p
= restvr (abfd
, p
, r
);
5836 bfd_put_32 (abfd
, BLR
, p
);
5840 /* Called via elf_link_hash_traverse to transfer dynamic linking
5841 information on function code symbol entries to their corresponding
5842 function descriptor symbol entries. */
5845 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5847 struct bfd_link_info
*info
;
5848 struct ppc_link_hash_table
*htab
;
5849 struct plt_entry
*ent
;
5850 struct ppc_link_hash_entry
*fh
;
5851 struct ppc_link_hash_entry
*fdh
;
5852 bfd_boolean force_local
;
5854 fh
= (struct ppc_link_hash_entry
*) h
;
5855 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5858 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5859 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5862 htab
= ppc_hash_table (info
);
5864 /* Resolve undefined references to dot-symbols as the value
5865 in the function descriptor, if we have one in a regular object.
5866 This is to satisfy cases like ".quad .foo". Calls to functions
5867 in dynamic objects are handled elsewhere. */
5868 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5869 && fh
->was_undefined
5870 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5871 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5872 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5873 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5874 fh
->oh
->elf
.root
.u
.def
.value
,
5875 &fh
->elf
.root
.u
.def
.section
,
5876 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5878 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5879 fh
->elf
.forced_local
= 1;
5880 fh
->elf
.def_regular
= fh
->oh
->elf
.def_regular
;
5881 fh
->elf
.def_dynamic
= fh
->oh
->elf
.def_dynamic
;
5884 /* If this is a function code symbol, transfer dynamic linking
5885 information to the function descriptor symbol. */
5889 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5890 if (ent
->plt
.refcount
> 0)
5893 || fh
->elf
.root
.root
.string
[0] != '.'
5894 || fh
->elf
.root
.root
.string
[1] == '\0')
5897 /* Find the corresponding function descriptor symbol. Create it
5898 as undefined if necessary. */
5900 fdh
= get_fdh (fh
, htab
);
5902 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5903 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5904 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5907 && !info
->executable
5908 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5909 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5911 fdh
= make_fdh (info
, fh
);
5916 /* Fake function descriptors are made undefweak. If the function
5917 code symbol is strong undefined, make the fake sym the same.
5918 If the function code symbol is defined, then force the fake
5919 descriptor local; We can't support overriding of symbols in a
5920 shared library on a fake descriptor. */
5924 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5926 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5928 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5929 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5931 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5932 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5934 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5939 && !fdh
->elf
.forced_local
5940 && (!info
->executable
5941 || fdh
->elf
.def_dynamic
5942 || fdh
->elf
.ref_dynamic
5943 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5944 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5946 if (fdh
->elf
.dynindx
== -1)
5947 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5949 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5950 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5951 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5952 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5953 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5955 move_plt_plist (fh
, fdh
);
5956 fdh
->elf
.needs_plt
= 1;
5958 fdh
->is_func_descriptor
= 1;
5963 /* Now that the info is on the function descriptor, clear the
5964 function code sym info. Any function code syms for which we
5965 don't have a definition in a regular file, we force local.
5966 This prevents a shared library from exporting syms that have
5967 been imported from another library. Function code syms that
5968 are really in the library we must leave global to prevent the
5969 linker dragging in a definition from a static library. */
5970 force_local
= (!fh
->elf
.def_regular
5972 || !fdh
->elf
.def_regular
5973 || fdh
->elf
.forced_local
);
5974 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5979 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5980 this hook to a) provide some gcc support functions, and b) transfer
5981 dynamic linking information gathered so far on function code symbol
5982 entries, to their corresponding function descriptor symbol entries. */
5985 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5986 struct bfd_link_info
*info
)
5988 struct ppc_link_hash_table
*htab
;
5990 const struct sfpr_def_parms funcs
[] =
5992 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5993 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5994 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5995 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5996 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5997 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5998 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5999 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6000 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6001 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6002 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6003 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6006 htab
= ppc_hash_table (info
);
6007 if (htab
->sfpr
== NULL
)
6008 /* We don't have any relocs. */
6011 /* Provide any missing _save* and _rest* functions. */
6012 htab
->sfpr
->size
= 0;
6013 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6014 if (!sfpr_define (info
, &funcs
[i
]))
6017 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6019 if (htab
->sfpr
->size
== 0)
6020 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6025 /* Adjust a symbol defined by a dynamic object and referenced by a
6026 regular object. The current definition is in some section of the
6027 dynamic object, but we're not including those sections. We have to
6028 change the definition to something the rest of the link can
6032 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6033 struct elf_link_hash_entry
*h
)
6035 struct ppc_link_hash_table
*htab
;
6038 htab
= ppc_hash_table (info
);
6040 /* Deal with function syms. */
6041 if (h
->type
== STT_FUNC
6044 /* Clear procedure linkage table information for any symbol that
6045 won't need a .plt entry. */
6046 struct plt_entry
*ent
;
6047 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6048 if (ent
->plt
.refcount
> 0)
6051 || SYMBOL_CALLS_LOCAL (info
, h
)
6052 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6053 && h
->root
.type
== bfd_link_hash_undefweak
))
6055 h
->plt
.plist
= NULL
;
6060 h
->plt
.plist
= NULL
;
6062 /* If this is a weak symbol, and there is a real definition, the
6063 processor independent code will have arranged for us to see the
6064 real definition first, and we can just use the same value. */
6065 if (h
->u
.weakdef
!= NULL
)
6067 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6068 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6069 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6070 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6071 if (ELIMINATE_COPY_RELOCS
)
6072 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6076 /* If we are creating a shared library, we must presume that the
6077 only references to the symbol are via the global offset table.
6078 For such cases we need not do anything here; the relocations will
6079 be handled correctly by relocate_section. */
6083 /* If there are no references to this symbol that do not use the
6084 GOT, we don't need to generate a copy reloc. */
6085 if (!h
->non_got_ref
)
6088 /* Don't generate a copy reloc for symbols defined in the executable. */
6089 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6092 if (ELIMINATE_COPY_RELOCS
)
6094 struct ppc_link_hash_entry
* eh
;
6095 struct ppc_dyn_relocs
*p
;
6097 eh
= (struct ppc_link_hash_entry
*) h
;
6098 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6100 s
= p
->sec
->output_section
;
6101 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6105 /* If we didn't find any dynamic relocs in read-only sections, then
6106 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6114 if (h
->plt
.plist
!= NULL
)
6116 /* We should never get here, but unfortunately there are versions
6117 of gcc out there that improperly (for this ABI) put initialized
6118 function pointers, vtable refs and suchlike in read-only
6119 sections. Allow them to proceed, but warn that this might
6120 break at runtime. */
6121 (*_bfd_error_handler
)
6122 (_("copy reloc against `%s' requires lazy plt linking; "
6123 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6124 h
->root
.root
.string
);
6127 /* This is a reference to a symbol defined by a dynamic object which
6128 is not a function. */
6132 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6133 h
->root
.root
.string
);
6137 /* We must allocate the symbol in our .dynbss section, which will
6138 become part of the .bss section of the executable. There will be
6139 an entry for this symbol in the .dynsym section. The dynamic
6140 object will contain position independent code, so all references
6141 from the dynamic object to this symbol will go through the global
6142 offset table. The dynamic linker will use the .dynsym entry to
6143 determine the address it must put in the global offset table, so
6144 both the dynamic object and the regular object will refer to the
6145 same memory location for the variable. */
6147 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6148 to copy the initial value out of the dynamic object and into the
6149 runtime process image. We need to remember the offset into the
6150 .rela.bss section we are going to use. */
6151 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6153 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6159 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6162 /* If given a function descriptor symbol, hide both the function code
6163 sym and the descriptor. */
6165 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6166 struct elf_link_hash_entry
*h
,
6167 bfd_boolean force_local
)
6169 struct ppc_link_hash_entry
*eh
;
6170 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6172 eh
= (struct ppc_link_hash_entry
*) h
;
6173 if (eh
->is_func_descriptor
)
6175 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6180 struct ppc_link_hash_table
*htab
;
6183 /* We aren't supposed to use alloca in BFD because on
6184 systems which do not have alloca the version in libiberty
6185 calls xmalloc, which might cause the program to crash
6186 when it runs out of memory. This function doesn't have a
6187 return status, so there's no way to gracefully return an
6188 error. So cheat. We know that string[-1] can be safely
6189 accessed; It's either a string in an ELF string table,
6190 or allocated in an objalloc structure. */
6192 p
= eh
->elf
.root
.root
.string
- 1;
6195 htab
= ppc_hash_table (info
);
6196 fh
= (struct ppc_link_hash_entry
*)
6197 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6200 /* Unfortunately, if it so happens that the string we were
6201 looking for was allocated immediately before this string,
6202 then we overwrote the string terminator. That's the only
6203 reason the lookup should fail. */
6206 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6207 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6209 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6210 fh
= (struct ppc_link_hash_entry
*)
6211 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6220 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6225 get_sym_h (struct elf_link_hash_entry
**hp
,
6226 Elf_Internal_Sym
**symp
,
6229 Elf_Internal_Sym
**locsymsp
,
6230 unsigned long r_symndx
,
6233 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6235 if (r_symndx
>= symtab_hdr
->sh_info
)
6237 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6238 struct elf_link_hash_entry
*h
;
6240 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6241 while (h
->root
.type
== bfd_link_hash_indirect
6242 || h
->root
.type
== bfd_link_hash_warning
)
6243 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6251 if (symsecp
!= NULL
)
6253 asection
*symsec
= NULL
;
6254 if (h
->root
.type
== bfd_link_hash_defined
6255 || h
->root
.type
== bfd_link_hash_defweak
)
6256 symsec
= h
->root
.u
.def
.section
;
6260 if (tls_maskp
!= NULL
)
6262 struct ppc_link_hash_entry
*eh
;
6264 eh
= (struct ppc_link_hash_entry
*) h
;
6265 *tls_maskp
= &eh
->tls_mask
;
6270 Elf_Internal_Sym
*sym
;
6271 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6273 if (locsyms
== NULL
)
6275 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6276 if (locsyms
== NULL
)
6277 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6278 symtab_hdr
->sh_info
,
6279 0, NULL
, NULL
, NULL
);
6280 if (locsyms
== NULL
)
6282 *locsymsp
= locsyms
;
6284 sym
= locsyms
+ r_symndx
;
6292 if (symsecp
!= NULL
)
6293 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6295 if (tls_maskp
!= NULL
)
6297 struct got_entry
**lgot_ents
;
6301 lgot_ents
= elf_local_got_ents (ibfd
);
6302 if (lgot_ents
!= NULL
)
6304 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
6305 tls_mask
= &lgot_masks
[r_symndx
];
6307 *tls_maskp
= tls_mask
;
6313 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6314 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6315 type suitable for optimization, and 1 otherwise. */
6318 get_tls_mask (char **tls_maskp
,
6319 unsigned long *toc_symndx
,
6320 bfd_vma
*toc_addend
,
6321 Elf_Internal_Sym
**locsymsp
,
6322 const Elf_Internal_Rela
*rel
,
6325 unsigned long r_symndx
;
6327 struct elf_link_hash_entry
*h
;
6328 Elf_Internal_Sym
*sym
;
6332 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6333 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6336 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6338 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6341 /* Look inside a TOC section too. */
6344 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6345 off
= h
->root
.u
.def
.value
;
6348 off
= sym
->st_value
;
6349 off
+= rel
->r_addend
;
6350 BFD_ASSERT (off
% 8 == 0);
6351 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6352 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6353 if (toc_symndx
!= NULL
)
6354 *toc_symndx
= r_symndx
;
6355 if (toc_addend
!= NULL
)
6356 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6357 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6360 || ((h
->root
.type
== bfd_link_hash_defined
6361 || h
->root
.type
== bfd_link_hash_defweak
)
6362 && !h
->def_dynamic
))
6363 && (next_r
== -1 || next_r
== -2))
6368 /* Adjust all global syms defined in opd sections. In gcc generated
6369 code for the old ABI, these will already have been done. */
6372 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6374 struct ppc_link_hash_entry
*eh
;
6376 struct _opd_sec_data
*opd
;
6378 if (h
->root
.type
== bfd_link_hash_indirect
)
6381 if (h
->root
.type
== bfd_link_hash_warning
)
6382 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6384 if (h
->root
.type
!= bfd_link_hash_defined
6385 && h
->root
.type
!= bfd_link_hash_defweak
)
6388 eh
= (struct ppc_link_hash_entry
*) h
;
6389 if (eh
->adjust_done
)
6392 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6393 opd
= get_opd_info (sym_sec
);
6394 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6396 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6399 /* This entry has been deleted. */
6400 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6403 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6404 if (elf_discarded_section (dsec
))
6406 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6410 eh
->elf
.root
.u
.def
.value
= 0;
6411 eh
->elf
.root
.u
.def
.section
= dsec
;
6414 eh
->elf
.root
.u
.def
.value
+= adjust
;
6415 eh
->adjust_done
= 1;
6420 /* Handles decrementing dynamic reloc counts for the reloc specified by
6421 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6422 have already been determined. */
6425 dec_dynrel_count (bfd_vma r_info
,
6427 struct bfd_link_info
*info
,
6428 Elf_Internal_Sym
**local_syms
,
6429 struct elf_link_hash_entry
*h
,
6432 enum elf_ppc64_reloc_type r_type
;
6433 struct ppc_dyn_relocs
*p
;
6434 struct ppc_dyn_relocs
**pp
;
6436 /* Can this reloc be dynamic? This switch, and later tests here
6437 should be kept in sync with the code in check_relocs. */
6438 r_type
= ELF64_R_TYPE (r_info
);
6444 case R_PPC64_TPREL16
:
6445 case R_PPC64_TPREL16_LO
:
6446 case R_PPC64_TPREL16_HI
:
6447 case R_PPC64_TPREL16_HA
:
6448 case R_PPC64_TPREL16_DS
:
6449 case R_PPC64_TPREL16_LO_DS
:
6450 case R_PPC64_TPREL16_HIGHER
:
6451 case R_PPC64_TPREL16_HIGHERA
:
6452 case R_PPC64_TPREL16_HIGHEST
:
6453 case R_PPC64_TPREL16_HIGHESTA
:
6457 case R_PPC64_TPREL64
:
6458 case R_PPC64_DTPMOD64
:
6459 case R_PPC64_DTPREL64
:
6460 case R_PPC64_ADDR64
:
6464 case R_PPC64_ADDR14
:
6465 case R_PPC64_ADDR14_BRNTAKEN
:
6466 case R_PPC64_ADDR14_BRTAKEN
:
6467 case R_PPC64_ADDR16
:
6468 case R_PPC64_ADDR16_DS
:
6469 case R_PPC64_ADDR16_HA
:
6470 case R_PPC64_ADDR16_HI
:
6471 case R_PPC64_ADDR16_HIGHER
:
6472 case R_PPC64_ADDR16_HIGHERA
:
6473 case R_PPC64_ADDR16_HIGHEST
:
6474 case R_PPC64_ADDR16_HIGHESTA
:
6475 case R_PPC64_ADDR16_LO
:
6476 case R_PPC64_ADDR16_LO_DS
:
6477 case R_PPC64_ADDR24
:
6478 case R_PPC64_ADDR32
:
6479 case R_PPC64_UADDR16
:
6480 case R_PPC64_UADDR32
:
6481 case R_PPC64_UADDR64
:
6486 if (local_syms
!= NULL
)
6488 unsigned long r_symndx
;
6489 Elf_Internal_Sym
*sym
;
6490 bfd
*ibfd
= sec
->owner
;
6492 r_symndx
= ELF64_R_SYM (r_info
);
6493 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6498 && (must_be_dyn_reloc (info
, r_type
)
6501 || h
->root
.type
== bfd_link_hash_defweak
6502 || !h
->def_regular
))))
6503 || (ELIMINATE_COPY_RELOCS
6506 && (h
->root
.type
== bfd_link_hash_defweak
6507 || !h
->def_regular
)))
6513 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6516 if (sym_sec
!= NULL
)
6518 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6519 pp
= (struct ppc_dyn_relocs
**) vpp
;
6523 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6524 pp
= (struct ppc_dyn_relocs
**) vpp
;
6527 /* elf_gc_sweep may have already removed all dyn relocs associated
6528 with local syms for a given section. Don't report a dynreloc
6534 while ((p
= *pp
) != NULL
)
6538 if (!must_be_dyn_reloc (info
, r_type
))
6548 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6550 bfd_set_error (bfd_error_bad_value
);
6554 /* Remove unused Official Procedure Descriptor entries. Currently we
6555 only remove those associated with functions in discarded link-once
6556 sections, or weakly defined functions that have been overridden. It
6557 would be possible to remove many more entries for statically linked
6561 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6562 bfd_boolean non_overlapping
)
6565 bfd_boolean some_edited
= FALSE
;
6566 asection
*need_pad
= NULL
;
6568 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6571 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6572 Elf_Internal_Shdr
*symtab_hdr
;
6573 Elf_Internal_Sym
*local_syms
;
6574 struct elf_link_hash_entry
**sym_hashes
;
6576 struct _opd_sec_data
*opd
;
6577 bfd_boolean need_edit
, add_aux_fields
;
6578 bfd_size_type cnt_16b
= 0;
6580 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6581 if (sec
== NULL
|| sec
->size
== 0)
6584 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6587 if (sec
->output_section
== bfd_abs_section_ptr
)
6590 /* Look through the section relocs. */
6591 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6595 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6596 sym_hashes
= elf_sym_hashes (ibfd
);
6598 /* Read the relocations. */
6599 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6601 if (relstart
== NULL
)
6604 /* First run through the relocs to check they are sane, and to
6605 determine whether we need to edit this opd section. */
6609 relend
= relstart
+ sec
->reloc_count
;
6610 for (rel
= relstart
; rel
< relend
; )
6612 enum elf_ppc64_reloc_type r_type
;
6613 unsigned long r_symndx
;
6615 struct elf_link_hash_entry
*h
;
6616 Elf_Internal_Sym
*sym
;
6618 /* .opd contains a regular array of 16 or 24 byte entries. We're
6619 only interested in the reloc pointing to a function entry
6621 if (rel
->r_offset
!= offset
6622 || rel
+ 1 >= relend
6623 || (rel
+ 1)->r_offset
!= offset
+ 8)
6625 /* If someone messes with .opd alignment then after a
6626 "ld -r" we might have padding in the middle of .opd.
6627 Also, there's nothing to prevent someone putting
6628 something silly in .opd with the assembler. No .opd
6629 optimization for them! */
6631 (*_bfd_error_handler
)
6632 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6637 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6638 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6640 (*_bfd_error_handler
)
6641 (_("%B: unexpected reloc type %u in .opd section"),
6647 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6648 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6652 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6654 const char *sym_name
;
6656 sym_name
= h
->root
.root
.string
;
6658 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6661 (*_bfd_error_handler
)
6662 (_("%B: undefined sym `%s' in .opd section"),
6668 /* opd entries are always for functions defined in the
6669 current input bfd. If the symbol isn't defined in the
6670 input bfd, then we won't be using the function in this
6671 bfd; It must be defined in a linkonce section in another
6672 bfd, or is weak. It's also possible that we are
6673 discarding the function due to a linker script /DISCARD/,
6674 which we test for via the output_section. */
6675 if (sym_sec
->owner
!= ibfd
6676 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6681 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6683 if (sec
->size
== offset
+ 24)
6688 if (rel
== relend
&& sec
->size
== offset
+ 16)
6696 if (rel
->r_offset
== offset
+ 24)
6698 else if (rel
->r_offset
!= offset
+ 16)
6700 else if (rel
+ 1 < relend
6701 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6702 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6707 else if (rel
+ 2 < relend
6708 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6709 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6718 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6720 if (need_edit
|| add_aux_fields
)
6722 Elf_Internal_Rela
*write_rel
;
6723 bfd_byte
*rptr
, *wptr
;
6724 bfd_byte
*new_contents
= NULL
;
6729 amt
= sec
->size
* sizeof (long) / 8;
6730 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
6731 opd
->adjust
= bfd_zalloc (obfd
, amt
);
6732 if (opd
->adjust
== NULL
)
6734 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
6736 /* This seems a waste of time as input .opd sections are all
6737 zeros as generated by gcc, but I suppose there's no reason
6738 this will always be so. We might start putting something in
6739 the third word of .opd entries. */
6740 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6743 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6748 if (local_syms
!= NULL
6749 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6751 if (elf_section_data (sec
)->relocs
!= relstart
)
6755 sec
->contents
= loc
;
6756 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6759 elf_section_data (sec
)->relocs
= relstart
;
6761 new_contents
= sec
->contents
;
6764 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6765 if (new_contents
== NULL
)
6769 wptr
= new_contents
;
6770 rptr
= sec
->contents
;
6772 write_rel
= relstart
;
6776 for (rel
= relstart
; rel
< relend
; rel
++)
6778 unsigned long r_symndx
;
6780 struct elf_link_hash_entry
*h
;
6781 Elf_Internal_Sym
*sym
;
6783 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6784 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6788 if (rel
->r_offset
== offset
)
6790 struct ppc_link_hash_entry
*fdh
= NULL
;
6792 /* See if the .opd entry is full 24 byte or
6793 16 byte (with fd_aux entry overlapped with next
6796 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6797 || (rel
+ 3 < relend
6798 && rel
[2].r_offset
== offset
+ 16
6799 && rel
[3].r_offset
== offset
+ 24
6800 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6801 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6805 && h
->root
.root
.string
[0] == '.')
6807 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6808 ppc_hash_table (info
));
6810 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6811 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6815 skip
= (sym_sec
->owner
!= ibfd
6816 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6819 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6821 /* Arrange for the function descriptor sym
6823 fdh
->elf
.root
.u
.def
.value
= 0;
6824 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6826 opd
->adjust
[rel
->r_offset
/ 8] = -1;
6830 /* We'll be keeping this opd entry. */
6834 /* Redefine the function descriptor symbol to
6835 this location in the opd section. It is
6836 necessary to update the value here rather
6837 than using an array of adjustments as we do
6838 for local symbols, because various places
6839 in the generic ELF code use the value
6840 stored in u.def.value. */
6841 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6842 fdh
->adjust_done
= 1;
6845 /* Local syms are a bit tricky. We could
6846 tweak them as they can be cached, but
6847 we'd need to look through the local syms
6848 for the function descriptor sym which we
6849 don't have at the moment. So keep an
6850 array of adjustments. */
6851 opd
->adjust
[rel
->r_offset
/ 8]
6852 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6855 memcpy (wptr
, rptr
, opd_ent_size
);
6856 wptr
+= opd_ent_size
;
6857 if (add_aux_fields
&& opd_ent_size
== 16)
6859 memset (wptr
, '\0', 8);
6863 rptr
+= opd_ent_size
;
6864 offset
+= opd_ent_size
;
6870 && !info
->relocatable
6871 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
6877 /* We need to adjust any reloc offsets to point to the
6878 new opd entries. While we're at it, we may as well
6879 remove redundant relocs. */
6880 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
6881 if (write_rel
!= rel
)
6882 memcpy (write_rel
, rel
, sizeof (*rel
));
6887 sec
->size
= wptr
- new_contents
;
6888 sec
->reloc_count
= write_rel
- relstart
;
6891 free (sec
->contents
);
6892 sec
->contents
= new_contents
;
6895 /* Fudge the header size too, as this is used later in
6896 elf_bfd_final_link if we are emitting relocs. */
6897 elf_section_data (sec
)->rel_hdr
.sh_size
6898 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6899 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6902 else if (elf_section_data (sec
)->relocs
!= relstart
)
6905 if (local_syms
!= NULL
6906 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6908 if (!info
->keep_memory
)
6911 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6916 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6918 /* If we are doing a final link and the last .opd entry is just 16 byte
6919 long, add a 8 byte padding after it. */
6920 if (need_pad
!= NULL
&& !info
->relocatable
)
6924 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6926 BFD_ASSERT (need_pad
->size
> 0);
6928 p
= bfd_malloc (need_pad
->size
+ 8);
6932 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6933 p
, 0, need_pad
->size
))
6936 need_pad
->contents
= p
;
6937 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6941 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6945 need_pad
->contents
= p
;
6948 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6949 need_pad
->size
+= 8;
6955 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6958 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6960 struct ppc_link_hash_table
*htab
;
6962 htab
= ppc_hash_table (info
);
6963 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
6964 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
6965 FALSE
, FALSE
, TRUE
));
6966 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
6967 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
6968 FALSE
, FALSE
, TRUE
));
6969 return _bfd_elf_tls_setup (obfd
, info
);
6972 /* Return TRUE iff REL is a branch reloc with a global symbol matching
6976 branch_reloc_hash_match (const bfd
*ibfd
,
6977 const Elf_Internal_Rela
*rel
,
6978 const struct ppc_link_hash_entry
*hash1
,
6979 const struct ppc_link_hash_entry
*hash2
)
6981 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6982 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
6983 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
6985 if (r_symndx
>= symtab_hdr
->sh_info
6986 && (r_type
== R_PPC64_REL24
6987 || r_type
== R_PPC64_REL14
6988 || r_type
== R_PPC64_REL14_BRTAKEN
6989 || r_type
== R_PPC64_REL14_BRNTAKEN
6990 || r_type
== R_PPC64_ADDR24
6991 || r_type
== R_PPC64_ADDR14
6992 || r_type
== R_PPC64_ADDR14_BRTAKEN
6993 || r_type
== R_PPC64_ADDR14_BRNTAKEN
))
6995 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6996 struct elf_link_hash_entry
*h
;
6998 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6999 while (h
->root
.type
== bfd_link_hash_indirect
7000 || h
->root
.type
== bfd_link_hash_warning
)
7001 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7002 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7008 /* Run through all the TLS relocs looking for optimization
7009 opportunities. The linker has been hacked (see ppc64elf.em) to do
7010 a preliminary section layout so that we know the TLS segment
7011 offsets. We can't optimize earlier because some optimizations need
7012 to know the tp offset, and we need to optimize before allocating
7013 dynamic relocations. */
7016 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7020 struct ppc_link_hash_table
*htab
;
7023 if (info
->relocatable
|| !info
->executable
)
7026 htab
= ppc_hash_table (info
);
7027 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7029 Elf_Internal_Sym
*locsyms
= NULL
;
7030 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7031 unsigned char *toc_ref
= NULL
;
7033 /* Look at all the sections for this file. Make two passes over
7034 the relocs. On the first pass, mark toc entries involved
7035 with tls relocs, and check that tls relocs involved in
7036 setting up a tls_get_addr call are indeed followed by such a
7037 call. If they are not, exclude them from the optimizations
7038 done on the second pass. */
7039 for (pass
= 0; pass
< 2; ++pass
)
7040 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7041 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7043 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7045 /* Read the relocations. */
7046 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7048 if (relstart
== NULL
)
7051 relend
= relstart
+ sec
->reloc_count
;
7052 for (rel
= relstart
; rel
< relend
; rel
++)
7054 enum elf_ppc64_reloc_type r_type
;
7055 unsigned long r_symndx
;
7056 struct elf_link_hash_entry
*h
;
7057 Elf_Internal_Sym
*sym
;
7060 char tls_set
, tls_clear
, tls_type
= 0;
7062 bfd_boolean ok_tprel
, is_local
;
7063 long toc_ref_index
= 0;
7064 int expecting_tls_get_addr
= 0;
7066 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7067 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7071 if (elf_section_data (sec
)->relocs
!= relstart
)
7073 if (toc_ref
!= NULL
)
7076 && (elf_symtab_hdr (ibfd
).contents
7077 != (unsigned char *) locsyms
))
7084 if (h
->root
.type
!= bfd_link_hash_defined
7085 && h
->root
.type
!= bfd_link_hash_defweak
)
7087 value
= h
->root
.u
.def
.value
;
7090 /* Symbols referenced by TLS relocs must be of type
7091 STT_TLS. So no need for .opd local sym adjust. */
7092 value
= sym
->st_value
;
7100 value
+= sym_sec
->output_offset
;
7101 value
+= sym_sec
->output_section
->vma
;
7102 value
-= htab
->elf
.tls_sec
->vma
;
7103 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7104 < (bfd_vma
) 1 << 32);
7107 r_type
= ELF64_R_TYPE (rel
->r_info
);
7110 case R_PPC64_GOT_TLSLD16
:
7111 case R_PPC64_GOT_TLSLD16_LO
:
7112 expecting_tls_get_addr
= 1;
7115 case R_PPC64_GOT_TLSLD16_HI
:
7116 case R_PPC64_GOT_TLSLD16_HA
:
7117 /* These relocs should never be against a symbol
7118 defined in a shared lib. Leave them alone if
7119 that turns out to be the case. */
7126 tls_type
= TLS_TLS
| TLS_LD
;
7129 case R_PPC64_GOT_TLSGD16
:
7130 case R_PPC64_GOT_TLSGD16_LO
:
7131 expecting_tls_get_addr
= 1;
7134 case R_PPC64_GOT_TLSGD16_HI
:
7135 case R_PPC64_GOT_TLSGD16_HA
:
7141 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7143 tls_type
= TLS_TLS
| TLS_GD
;
7146 case R_PPC64_GOT_TPREL16_DS
:
7147 case R_PPC64_GOT_TPREL16_LO_DS
:
7148 case R_PPC64_GOT_TPREL16_HI
:
7149 case R_PPC64_GOT_TPREL16_HA
:
7154 tls_clear
= TLS_TPREL
;
7155 tls_type
= TLS_TLS
| TLS_TPREL
;
7161 case R_PPC64_TOC16_LO
:
7165 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7168 /* Mark this toc entry as referenced by a TLS
7169 code sequence. We can do that now in the
7170 case of R_PPC64_TLS, and after checking for
7171 tls_get_addr for the TOC16 relocs. */
7172 if (toc_ref
== NULL
)
7174 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7175 if (toc_ref
== NULL
)
7179 value
= h
->root
.u
.def
.value
;
7181 value
= sym
->st_value
;
7182 value
+= rel
->r_addend
;
7183 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7184 toc_ref_index
= value
/ 8;
7185 if (r_type
== R_PPC64_TLS
7186 || r_type
== R_PPC64_TLSGD
7187 || r_type
== R_PPC64_TLSLD
)
7189 toc_ref
[toc_ref_index
] = 1;
7193 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7198 expecting_tls_get_addr
= 2;
7201 case R_PPC64_TPREL64
:
7205 || !toc_ref
[rel
->r_offset
/ 8])
7210 tls_set
= TLS_EXPLICIT
;
7211 tls_clear
= TLS_TPREL
;
7216 case R_PPC64_DTPMOD64
:
7220 || !toc_ref
[rel
->r_offset
/ 8])
7222 if (rel
+ 1 < relend
7224 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7225 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7229 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7232 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7241 tls_set
= TLS_EXPLICIT
;
7252 if (!expecting_tls_get_addr
7253 || !sec
->has_tls_get_addr_call
)
7256 if (rel
+ 1 < relend
7257 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7259 htab
->tls_get_addr_fd
))
7261 if (expecting_tls_get_addr
== 2)
7263 /* Check for toc tls entries. */
7267 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7272 if (retval
> 1 && toc_tls
!= NULL
)
7273 toc_ref
[toc_ref_index
] = 1;
7278 if (expecting_tls_get_addr
!= 1)
7281 /* Uh oh, we didn't find the expected call. We
7282 could just mark this symbol to exclude it
7283 from tls optimization but it's safer to skip
7284 the entire section. */
7285 sec
->has_tls_reloc
= 0;
7289 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7291 struct plt_entry
*ent
;
7292 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7295 if (ent
->addend
== 0)
7297 if (ent
->plt
.refcount
> 0)
7299 ent
->plt
.refcount
-= 1;
7300 expecting_tls_get_addr
= 0;
7306 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7308 struct plt_entry
*ent
;
7309 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7312 if (ent
->addend
== 0)
7314 if (ent
->plt
.refcount
> 0)
7315 ent
->plt
.refcount
-= 1;
7323 if ((tls_set
& TLS_EXPLICIT
) == 0)
7325 struct got_entry
*ent
;
7327 /* Adjust got entry for this reloc. */
7331 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7333 for (; ent
!= NULL
; ent
= ent
->next
)
7334 if (ent
->addend
== rel
->r_addend
7335 && ent
->owner
== ibfd
7336 && ent
->tls_type
== tls_type
)
7343 /* We managed to get rid of a got entry. */
7344 if (ent
->got
.refcount
> 0)
7345 ent
->got
.refcount
-= 1;
7350 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7351 we'll lose one or two dyn relocs. */
7352 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7356 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7358 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7364 *tls_mask
|= tls_set
;
7365 *tls_mask
&= ~tls_clear
;
7368 if (elf_section_data (sec
)->relocs
!= relstart
)
7372 if (toc_ref
!= NULL
)
7376 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7378 if (!info
->keep_memory
)
7381 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7387 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7388 the values of any global symbols in a toc section that has been
7389 edited. Globals in toc sections should be a rarity, so this function
7390 sets a flag if any are found in toc sections other than the one just
7391 edited, so that futher hash table traversals can be avoided. */
7393 struct adjust_toc_info
7396 unsigned long *skip
;
7397 bfd_boolean global_toc_syms
;
7401 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7403 struct ppc_link_hash_entry
*eh
;
7404 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7406 if (h
->root
.type
== bfd_link_hash_indirect
)
7409 if (h
->root
.type
== bfd_link_hash_warning
)
7410 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7412 if (h
->root
.type
!= bfd_link_hash_defined
7413 && h
->root
.type
!= bfd_link_hash_defweak
)
7416 eh
= (struct ppc_link_hash_entry
*) h
;
7417 if (eh
->adjust_done
)
7420 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7422 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7423 if (skip
!= (unsigned long) -1)
7424 eh
->elf
.root
.u
.def
.value
-= skip
;
7427 (*_bfd_error_handler
)
7428 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7429 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7430 eh
->elf
.root
.u
.def
.value
= 0;
7432 eh
->adjust_done
= 1;
7434 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7435 toc_inf
->global_toc_syms
= TRUE
;
7440 /* Examine all relocs referencing .toc sections in order to remove
7441 unused .toc entries. */
7444 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7447 struct adjust_toc_info toc_inf
;
7449 toc_inf
.global_toc_syms
= TRUE
;
7450 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7452 asection
*toc
, *sec
;
7453 Elf_Internal_Shdr
*symtab_hdr
;
7454 Elf_Internal_Sym
*local_syms
;
7455 struct elf_link_hash_entry
**sym_hashes
;
7456 Elf_Internal_Rela
*relstart
, *rel
;
7457 unsigned long *skip
, *drop
;
7458 unsigned char *used
;
7459 unsigned char *keep
, last
, some_unused
;
7461 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7464 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7465 || elf_discarded_section (toc
))
7469 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7470 sym_hashes
= elf_sym_hashes (ibfd
);
7472 /* Look at sections dropped from the final link. */
7475 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7477 if (sec
->reloc_count
== 0
7478 || !elf_discarded_section (sec
)
7479 || get_opd_info (sec
)
7480 || (sec
->flags
& SEC_ALLOC
) == 0
7481 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7484 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7485 if (relstart
== NULL
)
7488 /* Run through the relocs to see which toc entries might be
7490 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7492 enum elf_ppc64_reloc_type r_type
;
7493 unsigned long r_symndx
;
7495 struct elf_link_hash_entry
*h
;
7496 Elf_Internal_Sym
*sym
;
7499 r_type
= ELF64_R_TYPE (rel
->r_info
);
7506 case R_PPC64_TOC16_LO
:
7507 case R_PPC64_TOC16_HI
:
7508 case R_PPC64_TOC16_HA
:
7509 case R_PPC64_TOC16_DS
:
7510 case R_PPC64_TOC16_LO_DS
:
7514 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7515 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7523 val
= h
->root
.u
.def
.value
;
7525 val
= sym
->st_value
;
7526 val
+= rel
->r_addend
;
7528 if (val
>= toc
->size
)
7531 /* Anything in the toc ought to be aligned to 8 bytes.
7532 If not, don't mark as unused. */
7538 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7546 if (elf_section_data (sec
)->relocs
!= relstart
)
7553 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7557 if (local_syms
!= NULL
7558 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7562 && elf_section_data (sec
)->relocs
!= relstart
)
7569 /* Now check all kept sections that might reference the toc.
7570 Check the toc itself last. */
7571 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
7574 sec
= (sec
== toc
? NULL
7575 : sec
->next
== NULL
? toc
7576 : sec
->next
== toc
&& toc
->next
? toc
->next
7581 if (sec
->reloc_count
== 0
7582 || elf_discarded_section (sec
)
7583 || get_opd_info (sec
)
7584 || (sec
->flags
& SEC_ALLOC
) == 0
7585 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7588 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7589 if (relstart
== NULL
)
7592 /* Mark toc entries referenced as used. */
7595 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7597 enum elf_ppc64_reloc_type r_type
;
7598 unsigned long r_symndx
;
7600 struct elf_link_hash_entry
*h
;
7601 Elf_Internal_Sym
*sym
;
7604 r_type
= ELF64_R_TYPE (rel
->r_info
);
7608 case R_PPC64_TOC16_LO
:
7609 case R_PPC64_TOC16_HI
:
7610 case R_PPC64_TOC16_HA
:
7611 case R_PPC64_TOC16_DS
:
7612 case R_PPC64_TOC16_LO_DS
:
7613 /* In case we're taking addresses of toc entries. */
7614 case R_PPC64_ADDR64
:
7621 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7622 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7633 val
= h
->root
.u
.def
.value
;
7635 val
= sym
->st_value
;
7636 val
+= rel
->r_addend
;
7638 if (val
>= toc
->size
)
7641 /* For the toc section, we only mark as used if
7642 this entry itself isn't unused. */
7645 && (used
[rel
->r_offset
>> 3]
7646 || !skip
[rel
->r_offset
>> 3]))
7647 /* Do all the relocs again, to catch reference
7656 /* Merge the used and skip arrays. Assume that TOC
7657 doublewords not appearing as either used or unused belong
7658 to to an entry more than one doubleword in size. */
7659 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7660 drop
< skip
+ (toc
->size
+ 7) / 8;
7681 bfd_byte
*contents
, *src
;
7684 /* Shuffle the toc contents, and at the same time convert the
7685 skip array from booleans into offsets. */
7686 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7689 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7691 for (src
= contents
, off
= 0, drop
= skip
;
7692 src
< contents
+ toc
->size
;
7697 *drop
= (unsigned long) -1;
7703 memcpy (src
- off
, src
, 8);
7706 toc
->rawsize
= toc
->size
;
7707 toc
->size
= src
- contents
- off
;
7709 if (toc
->reloc_count
!= 0)
7711 Elf_Internal_Rela
*wrel
;
7714 /* Read toc relocs. */
7715 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7717 if (relstart
== NULL
)
7720 /* Remove unused toc relocs, and adjust those we keep. */
7722 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7723 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7725 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7726 wrel
->r_info
= rel
->r_info
;
7727 wrel
->r_addend
= rel
->r_addend
;
7730 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7731 &local_syms
, NULL
, NULL
))
7734 toc
->reloc_count
= wrel
- relstart
;
7735 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7736 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7737 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7740 /* Adjust addends for relocs against the toc section sym. */
7741 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7743 if (sec
->reloc_count
== 0
7744 || elf_discarded_section (sec
))
7747 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7749 if (relstart
== NULL
)
7752 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7754 enum elf_ppc64_reloc_type r_type
;
7755 unsigned long r_symndx
;
7757 struct elf_link_hash_entry
*h
;
7758 Elf_Internal_Sym
*sym
;
7760 r_type
= ELF64_R_TYPE (rel
->r_info
);
7767 case R_PPC64_TOC16_LO
:
7768 case R_PPC64_TOC16_HI
:
7769 case R_PPC64_TOC16_HA
:
7770 case R_PPC64_TOC16_DS
:
7771 case R_PPC64_TOC16_LO_DS
:
7772 case R_PPC64_ADDR64
:
7776 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7777 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7781 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7784 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7788 /* We shouldn't have local or global symbols defined in the TOC,
7789 but handle them anyway. */
7790 if (local_syms
!= NULL
)
7792 Elf_Internal_Sym
*sym
;
7794 for (sym
= local_syms
;
7795 sym
< local_syms
+ symtab_hdr
->sh_info
;
7797 if (sym
->st_value
!= 0
7798 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7800 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7801 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7804 (*_bfd_error_handler
)
7805 (_("%s defined in removed toc entry"),
7806 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7809 sym
->st_shndx
= SHN_ABS
;
7811 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7815 /* Finally, adjust any global syms defined in the toc. */
7816 if (toc_inf
.global_toc_syms
)
7819 toc_inf
.skip
= skip
;
7820 toc_inf
.global_toc_syms
= FALSE
;
7821 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7826 if (local_syms
!= NULL
7827 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7829 if (!info
->keep_memory
)
7832 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7840 /* Allocate space in .plt, .got and associated reloc sections for
7844 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7846 struct bfd_link_info
*info
;
7847 struct ppc_link_hash_table
*htab
;
7849 struct ppc_link_hash_entry
*eh
;
7850 struct ppc_dyn_relocs
*p
;
7851 struct got_entry
*gent
;
7853 if (h
->root
.type
== bfd_link_hash_indirect
)
7856 if (h
->root
.type
== bfd_link_hash_warning
)
7857 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7859 info
= (struct bfd_link_info
*) inf
;
7860 htab
= ppc_hash_table (info
);
7862 if (htab
->elf
.dynamic_sections_created
7864 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7866 struct plt_entry
*pent
;
7867 bfd_boolean doneone
= FALSE
;
7868 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7869 if (pent
->plt
.refcount
> 0)
7871 /* If this is the first .plt entry, make room for the special
7875 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7877 pent
->plt
.offset
= s
->size
;
7879 /* Make room for this entry. */
7880 s
->size
+= PLT_ENTRY_SIZE
;
7882 /* Make room for the .glink code. */
7885 s
->size
+= GLINK_CALL_STUB_SIZE
;
7886 /* We need bigger stubs past index 32767. */
7887 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7891 /* We also need to make an entry in the .rela.plt section. */
7893 s
->size
+= sizeof (Elf64_External_Rela
);
7897 pent
->plt
.offset
= (bfd_vma
) -1;
7900 h
->plt
.plist
= NULL
;
7906 h
->plt
.plist
= NULL
;
7910 eh
= (struct ppc_link_hash_entry
*) h
;
7911 /* Run through the TLS GD got entries first if we're changing them
7913 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7914 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7915 if (gent
->got
.refcount
> 0
7916 && (gent
->tls_type
& TLS_GD
) != 0)
7918 /* This was a GD entry that has been converted to TPREL. If
7919 there happens to be a TPREL entry we can use that one. */
7920 struct got_entry
*ent
;
7921 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7922 if (ent
->got
.refcount
> 0
7923 && (ent
->tls_type
& TLS_TPREL
) != 0
7924 && ent
->addend
== gent
->addend
7925 && ent
->owner
== gent
->owner
)
7927 gent
->got
.refcount
= 0;
7931 /* If not, then we'll be using our own TPREL entry. */
7932 if (gent
->got
.refcount
!= 0)
7933 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7936 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7937 if (gent
->got
.refcount
> 0)
7941 /* Make sure this symbol is output as a dynamic symbol.
7942 Undefined weak syms won't yet be marked as dynamic,
7943 nor will all TLS symbols. */
7944 if (h
->dynindx
== -1
7946 && htab
->elf
.dynamic_sections_created
)
7948 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7952 if ((gent
->tls_type
& TLS_LD
) != 0
7955 ppc64_tlsld_got (gent
->owner
)->refcount
+= 1;
7956 gent
->got
.offset
= (bfd_vma
) -1;
7960 if (!is_ppc64_elf (gent
->owner
))
7963 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7964 gent
->got
.offset
= s
->size
;
7966 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7967 dyn
= htab
->elf
.dynamic_sections_created
;
7969 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7970 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7971 || h
->root
.type
!= bfd_link_hash_undefweak
))
7972 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7973 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7974 ? 2 * sizeof (Elf64_External_Rela
)
7975 : sizeof (Elf64_External_Rela
));
7978 gent
->got
.offset
= (bfd_vma
) -1;
7980 if (eh
->dyn_relocs
== NULL
7981 || !htab
->elf
.dynamic_sections_created
)
7984 /* In the shared -Bsymbolic case, discard space allocated for
7985 dynamic pc-relative relocs against symbols which turn out to be
7986 defined in regular objects. For the normal shared case, discard
7987 space for relocs that have become local due to symbol visibility
7992 /* Relocs that use pc_count are those that appear on a call insn,
7993 or certain REL relocs (see must_be_dyn_reloc) that can be
7994 generated via assembly. We want calls to protected symbols to
7995 resolve directly to the function rather than going via the plt.
7996 If people want function pointer comparisons to work as expected
7997 then they should avoid writing weird assembly. */
7998 if (SYMBOL_CALLS_LOCAL (info
, h
))
8000 struct ppc_dyn_relocs
**pp
;
8002 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8004 p
->count
-= p
->pc_count
;
8013 /* Also discard relocs on undefined weak syms with non-default
8015 if (eh
->dyn_relocs
!= NULL
8016 && h
->root
.type
== bfd_link_hash_undefweak
)
8018 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8019 eh
->dyn_relocs
= NULL
;
8021 /* Make sure this symbol is output as a dynamic symbol.
8022 Undefined weak syms won't yet be marked as dynamic. */
8023 else if (h
->dynindx
== -1
8024 && !h
->forced_local
)
8026 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8031 else if (ELIMINATE_COPY_RELOCS
)
8033 /* For the non-shared case, discard space for relocs against
8034 symbols which turn out to need copy relocs or are not
8040 /* Make sure this symbol is output as a dynamic symbol.
8041 Undefined weak syms won't yet be marked as dynamic. */
8042 if (h
->dynindx
== -1
8043 && !h
->forced_local
)
8045 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8049 /* If that succeeded, we know we'll be keeping all the
8051 if (h
->dynindx
!= -1)
8055 eh
->dyn_relocs
= NULL
;
8060 /* Finally, allocate space. */
8061 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8063 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8064 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8070 /* Find any dynamic relocs that apply to read-only sections. */
8073 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8075 struct ppc_link_hash_entry
*eh
;
8076 struct ppc_dyn_relocs
*p
;
8078 if (h
->root
.type
== bfd_link_hash_warning
)
8079 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8081 eh
= (struct ppc_link_hash_entry
*) h
;
8082 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8084 asection
*s
= p
->sec
->output_section
;
8086 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8088 struct bfd_link_info
*info
= inf
;
8090 info
->flags
|= DF_TEXTREL
;
8092 /* Not an error, just cut short the traversal. */
8099 /* Set the sizes of the dynamic sections. */
8102 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8103 struct bfd_link_info
*info
)
8105 struct ppc_link_hash_table
*htab
;
8111 htab
= ppc_hash_table (info
);
8112 dynobj
= htab
->elf
.dynobj
;
8116 if (htab
->elf
.dynamic_sections_created
)
8118 /* Set the contents of the .interp section to the interpreter. */
8119 if (info
->executable
)
8121 s
= bfd_get_section_by_name (dynobj
, ".interp");
8124 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8125 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8129 /* Set up .got offsets for local syms, and space for local dynamic
8131 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8133 struct got_entry
**lgot_ents
;
8134 struct got_entry
**end_lgot_ents
;
8136 bfd_size_type locsymcount
;
8137 Elf_Internal_Shdr
*symtab_hdr
;
8140 if (!is_ppc64_elf (ibfd
))
8143 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8145 struct ppc_dyn_relocs
*p
;
8147 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8149 if (!bfd_is_abs_section (p
->sec
)
8150 && bfd_is_abs_section (p
->sec
->output_section
))
8152 /* Input section has been discarded, either because
8153 it is a copy of a linkonce section or due to
8154 linker script /DISCARD/, so we'll be discarding
8157 else if (p
->count
!= 0)
8159 srel
= elf_section_data (p
->sec
)->sreloc
;
8160 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8161 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8162 info
->flags
|= DF_TEXTREL
;
8167 lgot_ents
= elf_local_got_ents (ibfd
);
8171 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8172 locsymcount
= symtab_hdr
->sh_info
;
8173 end_lgot_ents
= lgot_ents
+ locsymcount
;
8174 lgot_masks
= (char *) end_lgot_ents
;
8175 s
= ppc64_elf_tdata (ibfd
)->got
;
8176 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8177 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8179 struct got_entry
*ent
;
8181 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
8182 if (ent
->got
.refcount
> 0)
8184 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8186 ppc64_tlsld_got (ibfd
)->refcount
+= 1;
8187 ent
->got
.offset
= (bfd_vma
) -1;
8191 ent
->got
.offset
= s
->size
;
8192 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8196 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
8202 srel
->size
+= sizeof (Elf64_External_Rela
);
8207 ent
->got
.offset
= (bfd_vma
) -1;
8211 /* Allocate global sym .plt and .got entries, and space for global
8212 sym dynamic relocs. */
8213 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8215 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8217 if (!is_ppc64_elf (ibfd
))
8220 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
8222 s
= ppc64_elf_tdata (ibfd
)->got
;
8223 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
8227 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8228 srel
->size
+= sizeof (Elf64_External_Rela
);
8232 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
8235 /* We now have determined the sizes of the various dynamic sections.
8236 Allocate memory for them. */
8238 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8240 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8243 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
8244 /* These haven't been allocated yet; don't strip. */
8246 else if (s
== htab
->got
8249 || s
== htab
->dynbss
)
8251 /* Strip this section if we don't need it; see the
8254 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8258 if (s
!= htab
->relplt
)
8261 /* We use the reloc_count field as a counter if we need
8262 to copy relocs into the output file. */
8268 /* It's not one of our sections, so don't allocate space. */
8274 /* If we don't need this section, strip it from the
8275 output file. This is mostly to handle .rela.bss and
8276 .rela.plt. We must create both sections in
8277 create_dynamic_sections, because they must be created
8278 before the linker maps input sections to output
8279 sections. The linker does that before
8280 adjust_dynamic_symbol is called, and it is that
8281 function which decides whether anything needs to go
8282 into these sections. */
8283 s
->flags
|= SEC_EXCLUDE
;
8287 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8290 /* Allocate memory for the section contents. We use bfd_zalloc
8291 here in case unused entries are not reclaimed before the
8292 section's contents are written out. This should not happen,
8293 but this way if it does we get a R_PPC64_NONE reloc in .rela
8294 sections instead of garbage.
8295 We also rely on the section contents being zero when writing
8297 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8298 if (s
->contents
== NULL
)
8302 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8304 if (!is_ppc64_elf (ibfd
))
8307 s
= ppc64_elf_tdata (ibfd
)->got
;
8308 if (s
!= NULL
&& s
!= htab
->got
)
8311 s
->flags
|= SEC_EXCLUDE
;
8314 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8315 if (s
->contents
== NULL
)
8319 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8323 s
->flags
|= SEC_EXCLUDE
;
8326 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8327 if (s
->contents
== NULL
)
8335 if (htab
->elf
.dynamic_sections_created
)
8337 /* Add some entries to the .dynamic section. We fill in the
8338 values later, in ppc64_elf_finish_dynamic_sections, but we
8339 must add the entries now so that we get the correct size for
8340 the .dynamic section. The DT_DEBUG entry is filled in by the
8341 dynamic linker and used by the debugger. */
8342 #define add_dynamic_entry(TAG, VAL) \
8343 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8345 if (info
->executable
)
8347 if (!add_dynamic_entry (DT_DEBUG
, 0))
8351 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8353 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8354 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8355 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8356 || !add_dynamic_entry (DT_JMPREL
, 0)
8357 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8363 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8364 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8370 if (!add_dynamic_entry (DT_RELA
, 0)
8371 || !add_dynamic_entry (DT_RELASZ
, 0)
8372 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8375 /* If any dynamic relocs apply to a read-only section,
8376 then we need a DT_TEXTREL entry. */
8377 if ((info
->flags
& DF_TEXTREL
) == 0)
8378 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8380 if ((info
->flags
& DF_TEXTREL
) != 0)
8382 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8387 #undef add_dynamic_entry
8392 /* Determine the type of stub needed, if any, for a call. */
8394 static inline enum ppc_stub_type
8395 ppc_type_of_stub (asection
*input_sec
,
8396 const Elf_Internal_Rela
*rel
,
8397 struct ppc_link_hash_entry
**hash
,
8398 bfd_vma destination
)
8400 struct ppc_link_hash_entry
*h
= *hash
;
8402 bfd_vma branch_offset
;
8403 bfd_vma max_branch_offset
;
8404 enum elf_ppc64_reloc_type r_type
;
8408 struct ppc_link_hash_entry
*fdh
= h
;
8410 && fdh
->oh
->is_func_descriptor
)
8413 if (fdh
->elf
.dynindx
!= -1)
8415 struct plt_entry
*ent
;
8417 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8418 if (ent
->addend
== rel
->r_addend
8419 && ent
->plt
.offset
!= (bfd_vma
) -1)
8422 return ppc_stub_plt_call
;
8426 /* Here, we know we don't have a plt entry. If we don't have a
8427 either a defined function descriptor or a defined entry symbol
8428 in a regular object file, then it is pointless trying to make
8429 any other type of stub. */
8430 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8431 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8432 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8433 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8434 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8435 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8436 return ppc_stub_none
;
8439 /* Determine where the call point is. */
8440 location
= (input_sec
->output_offset
8441 + input_sec
->output_section
->vma
8444 branch_offset
= destination
- location
;
8445 r_type
= ELF64_R_TYPE (rel
->r_info
);
8447 /* Determine if a long branch stub is needed. */
8448 max_branch_offset
= 1 << 25;
8449 if (r_type
!= R_PPC64_REL24
)
8450 max_branch_offset
= 1 << 15;
8452 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8453 /* We need a stub. Figure out whether a long_branch or plt_branch
8455 return ppc_stub_long_branch
;
8457 return ppc_stub_none
;
8460 /* Build a .plt call stub. */
8462 static inline bfd_byte
*
8463 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
8465 #define PPC_LO(v) ((v) & 0xffff)
8466 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8467 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8469 if (PPC_HA (offset
) != 0)
8473 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
8474 r
[1].r_offset
= r
[0].r_offset
+ 8;
8475 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8476 r
[1].r_addend
= r
[0].r_addend
;
8477 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8479 r
[2].r_offset
= r
[1].r_offset
+ 4;
8480 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
8481 r
[2].r_addend
= r
[0].r_addend
;
8485 r
[2].r_offset
= r
[1].r_offset
+ 8;
8486 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8487 r
[2].r_addend
= r
[0].r_addend
+ 8;
8488 r
[3].r_offset
= r
[2].r_offset
+ 4;
8489 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8490 r
[3].r_addend
= r
[0].r_addend
+ 16;
8493 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
8494 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8495 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8496 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8498 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
8501 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8502 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
8503 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
8504 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8511 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8512 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8514 r
[1].r_offset
= r
[0].r_offset
+ 4;
8515 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
8516 r
[1].r_addend
= r
[0].r_addend
;
8520 r
[1].r_offset
= r
[0].r_offset
+ 8;
8521 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8522 r
[1].r_addend
= r
[0].r_addend
+ 16;
8523 r
[2].r_offset
= r
[1].r_offset
+ 4;
8524 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8525 r
[2].r_addend
= r
[0].r_addend
+ 8;
8528 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8529 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
8530 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
8532 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
8535 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8536 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
8537 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
8538 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8543 static Elf_Internal_Rela
*
8544 get_relocs (asection
*sec
, int count
)
8546 Elf_Internal_Rela
*relocs
;
8547 struct bfd_elf_section_data
*elfsec_data
;
8549 elfsec_data
= elf_section_data (sec
);
8550 relocs
= elfsec_data
->relocs
;
8553 bfd_size_type relsize
;
8554 relsize
= sec
->reloc_count
* sizeof (*relocs
);
8555 relocs
= bfd_alloc (sec
->owner
, relsize
);
8558 elfsec_data
->relocs
= relocs
;
8559 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
8560 * sizeof (Elf64_External_Rela
));
8561 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
8562 sec
->reloc_count
= 0;
8564 relocs
+= sec
->reloc_count
;
8565 sec
->reloc_count
+= count
;
8570 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8572 struct ppc_stub_hash_entry
*stub_entry
;
8573 struct ppc_branch_hash_entry
*br_entry
;
8574 struct bfd_link_info
*info
;
8575 struct ppc_link_hash_table
*htab
;
8578 struct plt_entry
*ent
;
8581 Elf_Internal_Rela
*r
;
8583 /* Massage our args to the form they really have. */
8584 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8587 htab
= ppc_hash_table (info
);
8589 /* Make a note of the offset within the stubs for this entry. */
8590 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
8591 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
8593 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
8594 switch (stub_entry
->stub_type
)
8596 case ppc_stub_long_branch
:
8597 case ppc_stub_long_branch_r2off
:
8598 /* Branches are relative. This is where we are going to. */
8599 off
= dest
= (stub_entry
->target_value
8600 + stub_entry
->target_section
->output_offset
8601 + stub_entry
->target_section
->output_section
->vma
);
8603 /* And this is where we are coming from. */
8604 off
-= (stub_entry
->stub_offset
8605 + stub_entry
->stub_sec
->output_offset
8606 + stub_entry
->stub_sec
->output_section
->vma
);
8609 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8613 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8614 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8615 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8618 if (PPC_HA (r2off
) != 0)
8621 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8624 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8628 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8630 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8632 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
8633 stub_entry
->root
.string
);
8634 htab
->stub_error
= TRUE
;
8638 if (info
->emitrelocations
)
8640 r
= get_relocs (stub_entry
->stub_sec
, 1);
8643 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8644 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8646 if (stub_entry
->h
!= NULL
)
8648 struct elf_link_hash_entry
**hashes
;
8649 unsigned long symndx
;
8650 struct ppc_link_hash_entry
*h
;
8652 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8655 bfd_size_type hsize
;
8657 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8658 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8661 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8662 htab
->stub_globals
= 1;
8664 symndx
= htab
->stub_globals
++;
8666 hashes
[symndx
] = &h
->elf
;
8667 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8668 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8670 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8671 /* H is an opd symbol. The addend must be zero. */
8675 off
= (h
->elf
.root
.u
.def
.value
8676 + h
->elf
.root
.u
.def
.section
->output_offset
8677 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8684 case ppc_stub_plt_branch
:
8685 case ppc_stub_plt_branch_r2off
:
8686 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8687 stub_entry
->root
.string
+ 9,
8689 if (br_entry
== NULL
)
8691 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8692 stub_entry
->root
.string
);
8693 htab
->stub_error
= TRUE
;
8697 dest
= (stub_entry
->target_value
8698 + stub_entry
->target_section
->output_offset
8699 + stub_entry
->target_section
->output_section
->vma
);
8701 bfd_put_64 (htab
->brlt
->owner
, dest
,
8702 htab
->brlt
->contents
+ br_entry
->offset
);
8704 if (br_entry
->iter
== htab
->stub_iteration
)
8708 if (htab
->relbrlt
!= NULL
)
8710 /* Create a reloc for the branch lookup table entry. */
8711 Elf_Internal_Rela rela
;
8714 rela
.r_offset
= (br_entry
->offset
8715 + htab
->brlt
->output_offset
8716 + htab
->brlt
->output_section
->vma
);
8717 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8718 rela
.r_addend
= dest
;
8720 rl
= htab
->relbrlt
->contents
;
8721 rl
+= (htab
->relbrlt
->reloc_count
++
8722 * sizeof (Elf64_External_Rela
));
8723 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8725 else if (info
->emitrelocations
)
8727 r
= get_relocs (htab
->brlt
, 1);
8730 /* brlt, being SEC_LINKER_CREATED does not go through the
8731 normal reloc processing. Symbols and offsets are not
8732 translated from input file to output file form, so
8733 set up the offset per the output file. */
8734 r
->r_offset
= (br_entry
->offset
8735 + htab
->brlt
->output_offset
8736 + htab
->brlt
->output_section
->vma
);
8737 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8742 dest
= (br_entry
->offset
8743 + htab
->brlt
->output_offset
8744 + htab
->brlt
->output_section
->vma
);
8747 - elf_gp (htab
->brlt
->output_section
->owner
)
8748 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8750 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8752 (*_bfd_error_handler
)
8753 (_("linkage table error against `%s'"),
8754 stub_entry
->root
.string
);
8755 bfd_set_error (bfd_error_bad_value
);
8756 htab
->stub_error
= TRUE
;
8760 if (info
->emitrelocations
)
8762 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
8765 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8766 if (bfd_big_endian (info
->output_bfd
))
8768 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
8770 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
8771 r
[0].r_addend
= dest
;
8772 if (PPC_HA (off
) != 0)
8774 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
8775 r
[1].r_offset
= r
[0].r_offset
+ 4;
8776 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
8777 r
[1].r_addend
= r
[0].r_addend
;
8781 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8783 if (PPC_HA (off
) != 0)
8786 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
8788 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
8793 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
8800 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8801 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8802 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8805 if (PPC_HA (off
) != 0)
8808 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
8810 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
8815 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
8819 if (PPC_HA (r2off
) != 0)
8822 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8825 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8828 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8830 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8833 case ppc_stub_plt_call
:
8834 /* Do the best we can for shared libraries built without
8835 exporting ".foo" for each "foo". This can happen when symbol
8836 versioning scripts strip all bar a subset of symbols. */
8837 if (stub_entry
->h
->oh
!= NULL
8838 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8839 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8841 /* Point the symbol at the stub. There may be multiple stubs,
8842 we don't really care; The main thing is to make this sym
8843 defined somewhere. Maybe defining the symbol in the stub
8844 section is a silly idea. If we didn't do this, htab->top_id
8846 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8847 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8848 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8851 /* Now build the stub. */
8852 dest
= (bfd_vma
) -1;
8853 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8854 if (ent
->addend
== stub_entry
->addend
)
8856 dest
= ent
->plt
.offset
;
8859 if (dest
>= (bfd_vma
) -2)
8862 dest
&= ~ (bfd_vma
) 1;
8863 dest
+= (htab
->plt
->output_offset
8864 + htab
->plt
->output_section
->vma
);
8867 - elf_gp (htab
->plt
->output_section
->owner
)
8868 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8870 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8872 (*_bfd_error_handler
)
8873 (_("linkage table error against `%s'"),
8874 stub_entry
->h
->elf
.root
.root
.string
);
8875 bfd_set_error (bfd_error_bad_value
);
8876 htab
->stub_error
= TRUE
;
8881 if (info
->emitrelocations
)
8883 r
= get_relocs (stub_entry
->stub_sec
,
8884 (2 + (PPC_HA (off
) != 0)
8885 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
8888 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8889 if (bfd_big_endian (info
->output_bfd
))
8891 r
[0].r_addend
= dest
;
8893 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
8902 stub_entry
->stub_sec
->size
+= size
;
8904 if (htab
->emit_stub_syms
)
8906 struct elf_link_hash_entry
*h
;
8909 const char *const stub_str
[] = { "long_branch",
8910 "long_branch_r2off",
8915 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8916 len2
= strlen (stub_entry
->root
.string
);
8917 name
= bfd_malloc (len1
+ len2
+ 2);
8920 memcpy (name
, stub_entry
->root
.string
, 9);
8921 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8922 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8923 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8926 if (h
->root
.type
== bfd_link_hash_new
)
8928 h
->root
.type
= bfd_link_hash_defined
;
8929 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8930 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8933 h
->ref_regular_nonweak
= 1;
8934 h
->forced_local
= 1;
8942 /* As above, but don't actually build the stub. Just bump offset so
8943 we know stub section sizes, and select plt_branch stubs where
8944 long_branch stubs won't do. */
8947 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8949 struct ppc_stub_hash_entry
*stub_entry
;
8950 struct bfd_link_info
*info
;
8951 struct ppc_link_hash_table
*htab
;
8955 /* Massage our args to the form they really have. */
8956 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8959 htab
= ppc_hash_table (info
);
8961 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8963 struct plt_entry
*ent
;
8965 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8966 if (ent
->addend
== stub_entry
->addend
)
8968 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8971 if (off
>= (bfd_vma
) -2)
8973 off
+= (htab
->plt
->output_offset
8974 + htab
->plt
->output_section
->vma
8975 - elf_gp (htab
->plt
->output_section
->owner
)
8976 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8978 size
= PLT_CALL_STUB_SIZE
;
8979 if (PPC_HA (off
) == 0)
8981 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8983 if (info
->emitrelocations
)
8985 stub_entry
->stub_sec
->reloc_count
8986 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
8987 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
8992 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8996 off
= (stub_entry
->target_value
8997 + stub_entry
->target_section
->output_offset
8998 + stub_entry
->target_section
->output_section
->vma
);
8999 off
-= (stub_entry
->stub_sec
->size
9000 + stub_entry
->stub_sec
->output_offset
9001 + stub_entry
->stub_sec
->output_section
->vma
);
9003 /* Reset the stub type from the plt variant in case we now
9004 can reach with a shorter stub. */
9005 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9006 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9009 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9011 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9012 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9014 if (PPC_HA (r2off
) != 0)
9019 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9020 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9022 struct ppc_branch_hash_entry
*br_entry
;
9024 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9025 stub_entry
->root
.string
+ 9,
9027 if (br_entry
== NULL
)
9029 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9030 stub_entry
->root
.string
);
9031 htab
->stub_error
= TRUE
;
9035 if (br_entry
->iter
!= htab
->stub_iteration
)
9037 br_entry
->iter
= htab
->stub_iteration
;
9038 br_entry
->offset
= htab
->brlt
->size
;
9039 htab
->brlt
->size
+= 8;
9041 if (htab
->relbrlt
!= NULL
)
9042 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9043 else if (info
->emitrelocations
)
9045 htab
->brlt
->reloc_count
+= 1;
9046 htab
->brlt
->flags
|= SEC_RELOC
;
9050 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9051 off
= (br_entry
->offset
9052 + htab
->brlt
->output_offset
9053 + htab
->brlt
->output_section
->vma
9054 - elf_gp (htab
->brlt
->output_section
->owner
)
9055 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9057 if (info
->emitrelocations
)
9059 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9060 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9063 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9066 if (PPC_HA (off
) != 0)
9072 if (PPC_HA (off
) != 0)
9075 if (PPC_HA (r2off
) != 0)
9079 else if (info
->emitrelocations
)
9081 stub_entry
->stub_sec
->reloc_count
+= 1;
9082 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9086 stub_entry
->stub_sec
->size
+= size
;
9090 /* Set up various things so that we can make a list of input sections
9091 for each output section included in the link. Returns -1 on error,
9092 0 when no stubs will be needed, and 1 on success. */
9095 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
9096 struct bfd_link_info
*info
,
9100 int top_id
, top_index
, id
;
9102 asection
**input_list
;
9104 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9106 htab
->no_multi_toc
= no_multi_toc
;
9108 if (htab
->brlt
== NULL
)
9111 /* Find the top input section id. */
9112 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9114 input_bfd
= input_bfd
->link_next
)
9116 for (section
= input_bfd
->sections
;
9118 section
= section
->next
)
9120 if (top_id
< section
->id
)
9121 top_id
= section
->id
;
9125 htab
->top_id
= top_id
;
9126 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9127 htab
->stub_group
= bfd_zmalloc (amt
);
9128 if (htab
->stub_group
== NULL
)
9131 /* Set toc_off for com, und, abs and ind sections. */
9132 for (id
= 0; id
< 3; id
++)
9133 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9135 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
9137 /* We can't use output_bfd->section_count here to find the top output
9138 section index as some sections may have been removed, and
9139 strip_excluded_output_sections doesn't renumber the indices. */
9140 for (section
= output_bfd
->sections
, top_index
= 0;
9142 section
= section
->next
)
9144 if (top_index
< section
->index
)
9145 top_index
= section
->index
;
9148 htab
->top_index
= top_index
;
9149 amt
= sizeof (asection
*) * (top_index
+ 1);
9150 input_list
= bfd_zmalloc (amt
);
9151 htab
->input_list
= input_list
;
9152 if (input_list
== NULL
)
9158 /* The linker repeatedly calls this function for each TOC input section
9159 and linker generated GOT section. Group input bfds such that the toc
9160 within a group is less than 64k in size. Will break with cute linker
9161 scripts that play games with dot in the output toc section. */
9164 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
9166 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9168 if (!htab
->no_multi_toc
)
9170 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
9171 bfd_vma off
= addr
- htab
->toc_curr
;
9173 if (off
+ isec
->size
> 0x10000)
9174 htab
->toc_curr
= addr
;
9176 elf_gp (isec
->owner
) = (htab
->toc_curr
9177 - elf_gp (isec
->output_section
->owner
)
9182 /* Called after the last call to the above function. */
9185 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
9187 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9189 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
9191 /* toc_curr tracks the TOC offset used for code sections below in
9192 ppc64_elf_next_input_section. Start off at 0x8000. */
9193 htab
->toc_curr
= TOC_BASE_OFF
;
9196 /* No toc references were found in ISEC. If the code in ISEC makes no
9197 calls, then there's no need to use toc adjusting stubs when branching
9198 into ISEC. Actually, indirect calls from ISEC are OK as they will
9199 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9200 needed, and 2 if a cyclical call-graph was found but no other reason
9201 for a stub was detected. If called from the top level, a return of
9202 2 means the same as a return of 0. */
9205 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
9207 Elf_Internal_Rela
*relstart
, *rel
;
9208 Elf_Internal_Sym
*local_syms
;
9210 struct ppc_link_hash_table
*htab
;
9212 /* We know none of our code bearing sections will need toc stubs. */
9213 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
9216 if (isec
->size
== 0)
9219 if (isec
->output_section
== NULL
)
9222 if (isec
->reloc_count
== 0)
9225 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
9227 if (relstart
== NULL
)
9230 /* Look for branches to outside of this section. */
9233 htab
= ppc_hash_table (info
);
9234 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
9236 enum elf_ppc64_reloc_type r_type
;
9237 unsigned long r_symndx
;
9238 struct elf_link_hash_entry
*h
;
9239 struct ppc_link_hash_entry
*eh
;
9240 Elf_Internal_Sym
*sym
;
9242 struct _opd_sec_data
*opd
;
9246 r_type
= ELF64_R_TYPE (rel
->r_info
);
9247 if (r_type
!= R_PPC64_REL24
9248 && r_type
!= R_PPC64_REL14
9249 && r_type
!= R_PPC64_REL14_BRTAKEN
9250 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9253 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9254 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
9261 /* Calls to dynamic lib functions go through a plt call stub
9263 eh
= (struct ppc_link_hash_entry
*) h
;
9265 && (eh
->elf
.plt
.plist
!= NULL
9267 && eh
->oh
->elf
.plt
.plist
!= NULL
)))
9273 if (sym_sec
== NULL
)
9274 /* Ignore other undefined symbols. */
9277 /* Assume branches to other sections not included in the link need
9278 stubs too, to cover -R and absolute syms. */
9279 if (sym_sec
->output_section
== NULL
)
9286 sym_value
= sym
->st_value
;
9289 if (h
->root
.type
!= bfd_link_hash_defined
9290 && h
->root
.type
!= bfd_link_hash_defweak
)
9292 sym_value
= h
->root
.u
.def
.value
;
9294 sym_value
+= rel
->r_addend
;
9296 /* If this branch reloc uses an opd sym, find the code section. */
9297 opd
= get_opd_info (sym_sec
);
9300 if (h
== NULL
&& opd
->adjust
!= NULL
)
9304 adjust
= opd
->adjust
[sym
->st_value
/ 8];
9306 /* Assume deleted functions won't ever be called. */
9308 sym_value
+= adjust
;
9311 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
9312 if (dest
== (bfd_vma
) -1)
9317 + sym_sec
->output_offset
9318 + sym_sec
->output_section
->vma
);
9320 /* Ignore branch to self. */
9321 if (sym_sec
== isec
)
9324 /* If the called function uses the toc, we need a stub. */
9325 if (sym_sec
->has_toc_reloc
9326 || sym_sec
->makes_toc_func_call
)
9332 /* Assume any branch that needs a long branch stub might in fact
9333 need a plt_branch stub. A plt_branch stub uses r2. */
9334 else if (dest
- (isec
->output_offset
9335 + isec
->output_section
->vma
9336 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
9342 /* If calling back to a section in the process of being tested, we
9343 can't say for sure that no toc adjusting stubs are needed, so
9344 don't return zero. */
9345 else if (sym_sec
->call_check_in_progress
)
9348 /* Branches to another section that itself doesn't have any TOC
9349 references are OK. Recursively call ourselves to check. */
9350 else if (sym_sec
->id
<= htab
->top_id
9351 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
9355 /* Mark current section as indeterminate, so that other
9356 sections that call back to current won't be marked as
9358 isec
->call_check_in_progress
= 1;
9359 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
9360 isec
->call_check_in_progress
= 0;
9364 /* An error. Exit. */
9368 else if (recur
<= 1)
9370 /* Known result. Mark as checked and set section flag. */
9371 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
9374 sym_sec
->makes_toc_func_call
= 1;
9381 /* Unknown result. Continue checking. */
9387 if (local_syms
!= NULL
9388 && (elf_symtab_hdr (isec
->owner
).contents
!= (unsigned char *) local_syms
))
9390 if (elf_section_data (isec
)->relocs
!= relstart
)
9396 /* The linker repeatedly calls this function for each input section,
9397 in the order that input sections are linked into output sections.
9398 Build lists of input sections to determine groupings between which
9399 we may insert linker stubs. */
9402 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
9404 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9406 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
9407 && isec
->output_section
->index
<= htab
->top_index
)
9409 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
9410 /* Steal the link_sec pointer for our list. */
9411 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
9412 /* This happens to make the list in reverse order,
9413 which is what we want. */
9414 PREV_SEC (isec
) = *list
;
9418 if (htab
->multi_toc_needed
)
9420 /* If a code section has a function that uses the TOC then we need
9421 to use the right TOC (obviously). Also, make sure that .opd gets
9422 the correct TOC value for R_PPC64_TOC relocs that don't have or
9423 can't find their function symbol (shouldn't ever happen now).
9424 Also specially treat .fixup for the linux kernel. .fixup
9425 contains branches, but only back to the function that hit an
9427 if (isec
->has_toc_reloc
9428 || (isec
->flags
& SEC_CODE
) == 0
9429 || strcmp (isec
->name
, ".fixup") == 0)
9431 if (elf_gp (isec
->owner
) != 0)
9432 htab
->toc_curr
= elf_gp (isec
->owner
);
9434 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
9436 int ret
= toc_adjusting_stub_needed (info
, isec
);
9440 isec
->makes_toc_func_call
= ret
& 1;
9444 /* Functions that don't use the TOC can belong in any TOC group.
9445 Use the last TOC base. This happens to make _init and _fini
9447 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
9451 /* See whether we can group stub sections together. Grouping stub
9452 sections may result in fewer stubs. More importantly, we need to
9453 put all .init* and .fini* stubs at the beginning of the .init or
9454 .fini output sections respectively, because glibc splits the
9455 _init and _fini functions into multiple parts. Putting a stub in
9456 the middle of a function is not a good idea. */
9459 group_sections (struct ppc_link_hash_table
*htab
,
9460 bfd_size_type stub_group_size
,
9461 bfd_boolean stubs_always_before_branch
)
9464 bfd_size_type stub14_group_size
;
9465 bfd_boolean suppress_size_errors
;
9467 suppress_size_errors
= FALSE
;
9468 stub14_group_size
= stub_group_size
;
9469 if (stub_group_size
== 1)
9471 /* Default values. */
9472 if (stubs_always_before_branch
)
9474 stub_group_size
= 0x1e00000;
9475 stub14_group_size
= 0x7800;
9479 stub_group_size
= 0x1c00000;
9480 stub14_group_size
= 0x7000;
9482 suppress_size_errors
= TRUE
;
9485 list
= htab
->input_list
+ htab
->top_index
;
9488 asection
*tail
= *list
;
9489 while (tail
!= NULL
)
9493 bfd_size_type total
;
9494 bfd_boolean big_sec
;
9499 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
9500 ? stub14_group_size
: stub_group_size
);
9501 if (big_sec
&& !suppress_size_errors
)
9502 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
9504 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
9506 while ((prev
= PREV_SEC (curr
)) != NULL
9507 && ((total
+= curr
->output_offset
- prev
->output_offset
)
9508 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9509 ? stub14_group_size
: stub_group_size
))
9510 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9513 /* OK, the size from the start of CURR to the end is less
9514 than stub_group_size and thus can be handled by one stub
9515 section. (or the tail section is itself larger than
9516 stub_group_size, in which case we may be toast.) We
9517 should really be keeping track of the total size of stubs
9518 added here, as stubs contribute to the final output
9519 section size. That's a little tricky, and this way will
9520 only break if stubs added make the total size more than
9521 2^25, ie. for the default stub_group_size, if stubs total
9522 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9525 prev
= PREV_SEC (tail
);
9526 /* Set up this stub group. */
9527 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9529 while (tail
!= curr
&& (tail
= prev
) != NULL
);
9531 /* But wait, there's more! Input sections up to stub_group_size
9532 bytes before the stub section can be handled by it too.
9533 Don't do this if we have a really large section after the
9534 stubs, as adding more stubs increases the chance that
9535 branches may not reach into the stub section. */
9536 if (!stubs_always_before_branch
&& !big_sec
)
9540 && ((total
+= tail
->output_offset
- prev
->output_offset
)
9541 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9542 ? stub14_group_size
: stub_group_size
))
9543 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9546 prev
= PREV_SEC (tail
);
9547 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9553 while (list
-- != htab
->input_list
);
9554 free (htab
->input_list
);
9558 /* Determine and set the size of the stub section for a final link.
9560 The basic idea here is to examine all the relocations looking for
9561 PC-relative calls to a target that is unreachable with a "bl"
9565 ppc64_elf_size_stubs (bfd
*output_bfd
,
9566 struct bfd_link_info
*info
,
9567 bfd_signed_vma group_size
,
9568 asection
*(*add_stub_section
) (const char *, asection
*),
9569 void (*layout_sections_again
) (void))
9571 bfd_size_type stub_group_size
;
9572 bfd_boolean stubs_always_before_branch
;
9573 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9575 /* Stash our params away. */
9576 htab
->add_stub_section
= add_stub_section
;
9577 htab
->layout_sections_again
= layout_sections_again
;
9578 stubs_always_before_branch
= group_size
< 0;
9580 stub_group_size
= -group_size
;
9582 stub_group_size
= group_size
;
9584 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
9589 unsigned int bfd_indx
;
9592 htab
->stub_iteration
+= 1;
9594 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
9596 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
9598 Elf_Internal_Shdr
*symtab_hdr
;
9600 Elf_Internal_Sym
*local_syms
= NULL
;
9602 if (!is_ppc64_elf (input_bfd
))
9605 /* We'll need the symbol table in a second. */
9606 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
9607 if (symtab_hdr
->sh_info
== 0)
9610 /* Walk over each section attached to the input bfd. */
9611 for (section
= input_bfd
->sections
;
9613 section
= section
->next
)
9615 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
9617 /* If there aren't any relocs, then there's nothing more
9619 if ((section
->flags
& SEC_RELOC
) == 0
9620 || (section
->flags
& SEC_ALLOC
) == 0
9621 || (section
->flags
& SEC_LOAD
) == 0
9622 || (section
->flags
& SEC_CODE
) == 0
9623 || section
->reloc_count
== 0)
9626 /* If this section is a link-once section that will be
9627 discarded, then don't create any stubs. */
9628 if (section
->output_section
== NULL
9629 || section
->output_section
->owner
!= output_bfd
)
9632 /* Get the relocs. */
9634 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
9636 if (internal_relocs
== NULL
)
9637 goto error_ret_free_local
;
9639 /* Now examine each relocation. */
9640 irela
= internal_relocs
;
9641 irelaend
= irela
+ section
->reloc_count
;
9642 for (; irela
< irelaend
; irela
++)
9644 enum elf_ppc64_reloc_type r_type
;
9645 unsigned int r_indx
;
9646 enum ppc_stub_type stub_type
;
9647 struct ppc_stub_hash_entry
*stub_entry
;
9648 asection
*sym_sec
, *code_sec
;
9650 bfd_vma destination
;
9651 bfd_boolean ok_dest
;
9652 struct ppc_link_hash_entry
*hash
;
9653 struct ppc_link_hash_entry
*fdh
;
9654 struct elf_link_hash_entry
*h
;
9655 Elf_Internal_Sym
*sym
;
9657 const asection
*id_sec
;
9658 struct _opd_sec_data
*opd
;
9660 r_type
= ELF64_R_TYPE (irela
->r_info
);
9661 r_indx
= ELF64_R_SYM (irela
->r_info
);
9663 if (r_type
>= R_PPC64_max
)
9665 bfd_set_error (bfd_error_bad_value
);
9666 goto error_ret_free_internal
;
9669 /* Only look for stubs on branch instructions. */
9670 if (r_type
!= R_PPC64_REL24
9671 && r_type
!= R_PPC64_REL14
9672 && r_type
!= R_PPC64_REL14_BRTAKEN
9673 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9676 /* Now determine the call target, its name, value,
9678 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9680 goto error_ret_free_internal
;
9681 hash
= (struct ppc_link_hash_entry
*) h
;
9688 sym_value
= sym
->st_value
;
9691 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
9692 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
9694 sym_value
= hash
->elf
.root
.u
.def
.value
;
9695 if (sym_sec
->output_section
!= NULL
)
9698 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
9699 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
9701 /* Recognise an old ABI func code entry sym, and
9702 use the func descriptor sym instead if it is
9704 if (hash
->elf
.root
.root
.string
[0] == '.'
9705 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
9707 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
9708 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
9710 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
9711 sym_value
= fdh
->elf
.root
.u
.def
.value
;
9712 if (sym_sec
->output_section
!= NULL
)
9721 bfd_set_error (bfd_error_bad_value
);
9722 goto error_ret_free_internal
;
9728 sym_value
+= irela
->r_addend
;
9729 destination
= (sym_value
9730 + sym_sec
->output_offset
9731 + sym_sec
->output_section
->vma
);
9735 opd
= get_opd_info (sym_sec
);
9740 if (hash
== NULL
&& opd
->adjust
!= NULL
)
9742 long adjust
= opd
->adjust
[sym_value
/ 8];
9745 sym_value
+= adjust
;
9747 dest
= opd_entry_value (sym_sec
, sym_value
,
9748 &code_sec
, &sym_value
);
9749 if (dest
!= (bfd_vma
) -1)
9754 /* Fixup old ABI sym to point at code
9756 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9757 hash
->elf
.root
.u
.def
.section
= code_sec
;
9758 hash
->elf
.root
.u
.def
.value
= sym_value
;
9763 /* Determine what (if any) linker stub is needed. */
9764 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9767 if (stub_type
!= ppc_stub_plt_call
)
9769 /* Check whether we need a TOC adjusting stub.
9770 Since the linker pastes together pieces from
9771 different object files when creating the
9772 _init and _fini functions, it may be that a
9773 call to what looks like a local sym is in
9774 fact a call needing a TOC adjustment. */
9775 if (code_sec
!= NULL
9776 && code_sec
->output_section
!= NULL
9777 && (htab
->stub_group
[code_sec
->id
].toc_off
9778 != htab
->stub_group
[section
->id
].toc_off
)
9779 && (code_sec
->has_toc_reloc
9780 || code_sec
->makes_toc_func_call
))
9781 stub_type
= ppc_stub_long_branch_r2off
;
9784 if (stub_type
== ppc_stub_none
)
9787 /* __tls_get_addr calls might be eliminated. */
9788 if (stub_type
!= ppc_stub_plt_call
9790 && (hash
== htab
->tls_get_addr
9791 || hash
== htab
->tls_get_addr_fd
)
9792 && section
->has_tls_reloc
9793 && irela
!= internal_relocs
)
9798 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
9799 irela
- 1, input_bfd
))
9800 goto error_ret_free_internal
;
9805 /* Support for grouping stub sections. */
9806 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9808 /* Get the name of this stub. */
9809 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9811 goto error_ret_free_internal
;
9813 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9814 stub_name
, FALSE
, FALSE
);
9815 if (stub_entry
!= NULL
)
9817 /* The proper stub has already been created. */
9822 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9823 if (stub_entry
== NULL
)
9826 error_ret_free_internal
:
9827 if (elf_section_data (section
)->relocs
== NULL
)
9828 free (internal_relocs
);
9829 error_ret_free_local
:
9830 if (local_syms
!= NULL
9831 && (symtab_hdr
->contents
9832 != (unsigned char *) local_syms
))
9837 stub_entry
->stub_type
= stub_type
;
9838 stub_entry
->target_value
= sym_value
;
9839 stub_entry
->target_section
= code_sec
;
9840 stub_entry
->h
= hash
;
9841 stub_entry
->addend
= irela
->r_addend
;
9843 if (stub_entry
->h
!= NULL
)
9844 htab
->stub_globals
+= 1;
9847 /* We're done with the internal relocs, free them. */
9848 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9849 free (internal_relocs
);
9852 if (local_syms
!= NULL
9853 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9855 if (!info
->keep_memory
)
9858 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9862 /* We may have added some stubs. Find out the new size of the
9864 for (stub_sec
= htab
->stub_bfd
->sections
;
9866 stub_sec
= stub_sec
->next
)
9867 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9869 stub_sec
->rawsize
= stub_sec
->size
;
9871 stub_sec
->reloc_count
= 0;
9872 stub_sec
->flags
&= ~SEC_RELOC
;
9875 htab
->brlt
->size
= 0;
9876 htab
->brlt
->reloc_count
= 0;
9877 htab
->brlt
->flags
&= ~SEC_RELOC
;
9878 if (htab
->relbrlt
!= NULL
)
9879 htab
->relbrlt
->size
= 0;
9881 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9883 if (info
->emitrelocations
9884 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
9886 htab
->glink
->reloc_count
= 1;
9887 htab
->glink
->flags
|= SEC_RELOC
;
9890 for (stub_sec
= htab
->stub_bfd
->sections
;
9892 stub_sec
= stub_sec
->next
)
9893 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9894 && stub_sec
->rawsize
!= stub_sec
->size
)
9897 /* Exit from this loop when no stubs have been added, and no stubs
9898 have changed size. */
9899 if (stub_sec
== NULL
)
9902 /* Ask the linker to do its stuff. */
9903 (*htab
->layout_sections_again
) ();
9906 /* It would be nice to strip htab->brlt from the output if the
9907 section is empty, but it's too late. If we strip sections here,
9908 the dynamic symbol table is corrupted since the section symbol
9909 for the stripped section isn't written. */
9914 /* Called after we have determined section placement. If sections
9915 move, we'll be called again. Provide a value for TOCstart. */
9918 ppc64_elf_toc (bfd
*obfd
)
9923 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9924 order. The TOC starts where the first of these sections starts. */
9925 s
= bfd_get_section_by_name (obfd
, ".got");
9927 s
= bfd_get_section_by_name (obfd
, ".toc");
9929 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9931 s
= bfd_get_section_by_name (obfd
, ".plt");
9934 /* This may happen for
9935 o references to TOC base (SYM@toc / TOC[tc0]) without a
9938 o --gc-sections and empty TOC sections
9940 FIXME: Warn user? */
9942 /* Look for a likely section. We probably won't even be
9944 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9945 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9946 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9949 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9950 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9951 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9954 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9955 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9958 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9959 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9965 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9970 /* Build all the stubs associated with the current output file.
9971 The stubs are kept in a hash table attached to the main linker
9972 hash table. This function is called via gldelf64ppc_finish. */
9975 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9976 struct bfd_link_info
*info
,
9979 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9982 int stub_sec_count
= 0;
9984 htab
->emit_stub_syms
= emit_stub_syms
;
9986 /* Allocate memory to hold the linker stubs. */
9987 for (stub_sec
= htab
->stub_bfd
->sections
;
9989 stub_sec
= stub_sec
->next
)
9990 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9991 && stub_sec
->size
!= 0)
9993 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9994 if (stub_sec
->contents
== NULL
)
9996 /* We want to check that built size is the same as calculated
9997 size. rawsize is a convenient location to use. */
9998 stub_sec
->rawsize
= stub_sec
->size
;
10002 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10007 /* Build the .glink plt call stub. */
10008 if (htab
->emit_stub_syms
)
10010 struct elf_link_hash_entry
*h
;
10011 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
10012 TRUE
, FALSE
, FALSE
);
10015 if (h
->root
.type
== bfd_link_hash_new
)
10017 h
->root
.type
= bfd_link_hash_defined
;
10018 h
->root
.u
.def
.section
= htab
->glink
;
10019 h
->root
.u
.def
.value
= 8;
10020 h
->ref_regular
= 1;
10021 h
->def_regular
= 1;
10022 h
->ref_regular_nonweak
= 1;
10023 h
->forced_local
= 1;
10027 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
10028 if (info
->emitrelocations
)
10030 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
10033 r
->r_offset
= (htab
->glink
->output_offset
10034 + htab
->glink
->output_section
->vma
);
10035 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
10036 r
->r_addend
= plt0
;
10038 p
= htab
->glink
->contents
;
10039 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
10040 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
10042 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
10044 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
10046 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
10048 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
10050 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
10052 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
10054 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
10056 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
10058 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
10060 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
10062 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
10064 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
10066 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
10070 /* Build the .glink lazy link call stubs. */
10072 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
10076 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
10081 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
10083 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
10086 bfd_put_32 (htab
->glink
->owner
,
10087 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
10091 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
10094 if (htab
->brlt
->size
!= 0)
10096 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
10098 if (htab
->brlt
->contents
== NULL
)
10101 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
10103 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
10104 htab
->relbrlt
->size
);
10105 if (htab
->relbrlt
->contents
== NULL
)
10109 /* Build the stubs as directed by the stub hash table. */
10110 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
10112 if (htab
->relbrlt
!= NULL
)
10113 htab
->relbrlt
->reloc_count
= 0;
10115 for (stub_sec
= htab
->stub_bfd
->sections
;
10117 stub_sec
= stub_sec
->next
)
10118 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10120 stub_sec_count
+= 1;
10121 if (stub_sec
->rawsize
!= stub_sec
->size
)
10125 if (stub_sec
!= NULL
10126 || htab
->glink
->rawsize
!= htab
->glink
->size
)
10128 htab
->stub_error
= TRUE
;
10129 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
10132 if (htab
->stub_error
)
10137 *stats
= bfd_malloc (500);
10138 if (*stats
== NULL
)
10141 sprintf (*stats
, _("linker stubs in %u group%s\n"
10143 " toc adjust %lu\n"
10144 " long branch %lu\n"
10145 " long toc adj %lu\n"
10148 stub_sec_count
== 1 ? "" : "s",
10149 htab
->stub_count
[ppc_stub_long_branch
- 1],
10150 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
10151 htab
->stub_count
[ppc_stub_plt_branch
- 1],
10152 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
10153 htab
->stub_count
[ppc_stub_plt_call
- 1]);
10158 /* This function undoes the changes made by add_symbol_adjust. */
10161 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10163 struct ppc_link_hash_entry
*eh
;
10165 if (h
->root
.type
== bfd_link_hash_indirect
)
10168 if (h
->root
.type
== bfd_link_hash_warning
)
10169 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10171 eh
= (struct ppc_link_hash_entry
*) h
;
10172 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
10175 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
10180 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
10182 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10183 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
10186 /* What to do when ld finds relocations against symbols defined in
10187 discarded sections. */
10189 static unsigned int
10190 ppc64_elf_action_discarded (asection
*sec
)
10192 if (strcmp (".opd", sec
->name
) == 0)
10195 if (strcmp (".toc", sec
->name
) == 0)
10198 if (strcmp (".toc1", sec
->name
) == 0)
10201 return _bfd_elf_default_action_discarded (sec
);
10204 /* The RELOCATE_SECTION function is called by the ELF backend linker
10205 to handle the relocations for a section.
10207 The relocs are always passed as Rela structures; if the section
10208 actually uses Rel structures, the r_addend field will always be
10211 This function is responsible for adjust the section contents as
10212 necessary, and (if using Rela relocs and generating a
10213 relocatable output file) adjusting the reloc addend as
10216 This function does not have to worry about setting the reloc
10217 address or the reloc symbol index.
10219 LOCAL_SYMS is a pointer to the swapped in local symbols.
10221 LOCAL_SECTIONS is an array giving the section in the input file
10222 corresponding to the st_shndx field of each local symbol.
10224 The global hash table entry for the global symbols can be found
10225 via elf_sym_hashes (input_bfd).
10227 When generating relocatable output, this function must handle
10228 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10229 going to be the section symbol corresponding to the output
10230 section, which means that the addend must be adjusted
10234 ppc64_elf_relocate_section (bfd
*output_bfd
,
10235 struct bfd_link_info
*info
,
10237 asection
*input_section
,
10238 bfd_byte
*contents
,
10239 Elf_Internal_Rela
*relocs
,
10240 Elf_Internal_Sym
*local_syms
,
10241 asection
**local_sections
)
10243 struct ppc_link_hash_table
*htab
;
10244 Elf_Internal_Shdr
*symtab_hdr
;
10245 struct elf_link_hash_entry
**sym_hashes
;
10246 Elf_Internal_Rela
*rel
;
10247 Elf_Internal_Rela
*relend
;
10248 Elf_Internal_Rela outrel
;
10250 struct got_entry
**local_got_ents
;
10252 bfd_boolean ret
= TRUE
;
10253 bfd_boolean is_opd
;
10254 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
10255 bfd_boolean is_power4
= FALSE
;
10256 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
10258 /* Initialize howto table if needed. */
10259 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
10262 htab
= ppc_hash_table (info
);
10264 /* Don't relocate stub sections. */
10265 if (input_section
->owner
== htab
->stub_bfd
)
10268 BFD_ASSERT (is_ppc64_elf (input_bfd
));
10270 local_got_ents
= elf_local_got_ents (input_bfd
);
10271 TOCstart
= elf_gp (output_bfd
);
10272 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10273 sym_hashes
= elf_sym_hashes (input_bfd
);
10274 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
10277 relend
= relocs
+ input_section
->reloc_count
;
10278 for (; rel
< relend
; rel
++)
10280 enum elf_ppc64_reloc_type r_type
;
10281 bfd_vma addend
, orig_addend
;
10282 bfd_reloc_status_type r
;
10283 Elf_Internal_Sym
*sym
;
10285 struct elf_link_hash_entry
*h_elf
;
10286 struct ppc_link_hash_entry
*h
;
10287 struct ppc_link_hash_entry
*fdh
;
10288 const char *sym_name
;
10289 unsigned long r_symndx
, toc_symndx
;
10290 bfd_vma toc_addend
;
10291 char tls_mask
, tls_gd
, tls_type
;
10293 bfd_vma relocation
;
10294 bfd_boolean unresolved_reloc
;
10295 bfd_boolean warned
;
10296 unsigned long insn
, mask
;
10297 struct ppc_stub_hash_entry
*stub_entry
;
10298 bfd_vma max_br_offset
;
10301 r_type
= ELF64_R_TYPE (rel
->r_info
);
10302 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10304 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10305 symbol of the previous ADDR64 reloc. The symbol gives us the
10306 proper TOC base to use. */
10307 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
10309 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
10311 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
10317 unresolved_reloc
= FALSE
;
10319 orig_addend
= rel
->r_addend
;
10321 if (r_symndx
< symtab_hdr
->sh_info
)
10323 /* It's a local symbol. */
10324 struct _opd_sec_data
*opd
;
10326 sym
= local_syms
+ r_symndx
;
10327 sec
= local_sections
[r_symndx
];
10328 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
10329 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
10330 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
10331 opd
= get_opd_info (sec
);
10332 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
10334 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
10339 /* If this is a relocation against the opd section sym
10340 and we have edited .opd, adjust the reloc addend so
10341 that ld -r and ld --emit-relocs output is correct.
10342 If it is a reloc against some other .opd symbol,
10343 then the symbol value will be adjusted later. */
10344 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
10345 rel
->r_addend
+= adjust
;
10347 relocation
+= adjust
;
10353 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
10354 r_symndx
, symtab_hdr
, sym_hashes
,
10355 h_elf
, sec
, relocation
,
10356 unresolved_reloc
, warned
);
10357 sym_name
= h_elf
->root
.root
.string
;
10358 sym_type
= h_elf
->type
;
10360 h
= (struct ppc_link_hash_entry
*) h_elf
;
10362 if (sec
!= NULL
&& elf_discarded_section (sec
))
10364 /* For relocs against symbols from removed linkonce sections,
10365 or sections discarded by a linker script, we just want the
10366 section contents zeroed. Avoid any special processing. */
10367 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
10368 contents
+ rel
->r_offset
);
10374 if (info
->relocatable
)
10377 /* TLS optimizations. Replace instruction sequences and relocs
10378 based on information we collected in tls_optimize. We edit
10379 RELOCS so that --emit-relocs will output something sensible
10380 for the final instruction stream. */
10385 tls_mask
= h
->tls_mask
;
10386 else if (local_got_ents
!= NULL
)
10389 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
10390 tls_mask
= lgot_masks
[r_symndx
];
10393 && (r_type
== R_PPC64_TLS
10394 || r_type
== R_PPC64_TLSGD
10395 || r_type
== R_PPC64_TLSLD
))
10397 /* Check for toc tls entries. */
10400 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10401 &local_syms
, rel
, input_bfd
))
10405 tls_mask
= *toc_tls
;
10408 /* Check that tls relocs are used with tls syms, and non-tls
10409 relocs are used with non-tls syms. */
10411 && r_type
!= R_PPC64_NONE
10413 || h
->elf
.root
.type
== bfd_link_hash_defined
10414 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
10415 && (IS_PPC64_TLS_RELOC (r_type
)
10416 != (sym_type
== STT_TLS
10417 || (sym_type
== STT_SECTION
10418 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
10421 && (r_type
== R_PPC64_TLS
10422 || r_type
== R_PPC64_TLSGD
10423 || r_type
== R_PPC64_TLSLD
))
10424 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10427 (*_bfd_error_handler
)
10428 (!IS_PPC64_TLS_RELOC (r_type
)
10429 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10430 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10433 (long) rel
->r_offset
,
10434 ppc64_elf_howto_table
[r_type
]->name
,
10438 /* Ensure reloc mapping code below stays sane. */
10439 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
10440 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
10441 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
10442 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
10443 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
10444 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
10445 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
10446 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
10447 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
10448 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
10456 case R_PPC64_TOC16
:
10457 case R_PPC64_TOC16_LO
:
10458 case R_PPC64_TOC16_DS
:
10459 case R_PPC64_TOC16_LO_DS
:
10461 /* Check for toc tls entries. */
10465 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
10466 &local_syms
, rel
, input_bfd
);
10472 tls_mask
= *toc_tls
;
10473 if (r_type
== R_PPC64_TOC16_DS
10474 || r_type
== R_PPC64_TOC16_LO_DS
)
10477 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
10482 /* If we found a GD reloc pair, then we might be
10483 doing a GD->IE transition. */
10486 tls_gd
= TLS_TPRELGD
;
10487 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10490 else if (retval
== 3)
10492 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10500 case R_PPC64_GOT_TPREL16_DS
:
10501 case R_PPC64_GOT_TPREL16_LO_DS
:
10503 && (tls_mask
& TLS_TPREL
) == 0)
10506 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
10508 insn
|= 0x3c0d0000; /* addis 0,13,0 */
10509 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
10510 r_type
= R_PPC64_TPREL16_HA
;
10511 if (toc_symndx
!= 0)
10513 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10514 rel
->r_addend
= toc_addend
;
10515 /* We changed the symbol. Start over in order to
10516 get h, sym, sec etc. right. */
10521 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10527 && (tls_mask
& TLS_TPREL
) == 0)
10530 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
10531 if ((insn
& ((0x3f << 26) | (31 << 11)))
10532 == ((31 << 26) | (13 << 11)))
10533 rtra
= insn
& ((1 << 26) - (1 << 16));
10534 else if ((insn
& ((0x3f << 26) | (31 << 16)))
10535 == ((31 << 26) | (13 << 16)))
10536 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
10539 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
10542 else if ((insn
& (31 << 1)) == 23 << 1
10543 && ((insn
& (31 << 6)) < 14 << 6
10544 || ((insn
& (31 << 6)) >= 16 << 6
10545 && (insn
& (31 << 6)) < 24 << 6)))
10546 /* load and store indexed -> dform. */
10547 insn
= (32 | ((insn
>> 6) & 31)) << 26;
10548 else if ((insn
& (31 << 1)) == 21 << 1
10549 && (insn
& (0x1a << 6)) == 0)
10550 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10551 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
10552 | ((insn
>> 6) & 1));
10553 else if ((insn
& (31 << 1)) == 21 << 1
10554 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
10556 insn
= (58 << 26) | 2;
10560 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10561 /* Was PPC64_TLS which sits on insn boundary, now
10562 PPC64_TPREL16_LO which is at low-order half-word. */
10563 rel
->r_offset
+= d_offset
;
10564 r_type
= R_PPC64_TPREL16_LO
;
10565 if (toc_symndx
!= 0)
10567 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10568 rel
->r_addend
= toc_addend
;
10569 /* We changed the symbol. Start over in order to
10570 get h, sym, sec etc. right. */
10575 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10579 case R_PPC64_GOT_TLSGD16_HI
:
10580 case R_PPC64_GOT_TLSGD16_HA
:
10581 tls_gd
= TLS_TPRELGD
;
10582 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10586 case R_PPC64_GOT_TLSLD16_HI
:
10587 case R_PPC64_GOT_TLSLD16_HA
:
10588 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10591 if ((tls_mask
& tls_gd
) != 0)
10592 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10593 + R_PPC64_GOT_TPREL16_DS
);
10596 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10597 rel
->r_offset
-= d_offset
;
10598 r_type
= R_PPC64_NONE
;
10600 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10604 case R_PPC64_GOT_TLSGD16
:
10605 case R_PPC64_GOT_TLSGD16_LO
:
10606 tls_gd
= TLS_TPRELGD
;
10607 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10611 case R_PPC64_GOT_TLSLD16
:
10612 case R_PPC64_GOT_TLSLD16_LO
:
10613 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10615 unsigned int insn1
, insn2
, insn3
;
10619 offset
= (bfd_vma
) -1;
10620 /* If not using the newer R_PPC64_TLSGD/LD to mark
10621 __tls_get_addr calls, we must trust that the call
10622 stays with its arg setup insns, ie. that the next
10623 reloc is the __tls_get_addr call associated with
10624 the current reloc. Edit both insns. */
10625 if (input_section
->has_tls_get_addr_call
10626 && rel
+ 1 < relend
10627 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
10628 htab
->tls_get_addr
,
10629 htab
->tls_get_addr_fd
))
10630 offset
= rel
[1].r_offset
;
10631 if ((tls_mask
& tls_gd
) != 0)
10634 insn1
= bfd_get_32 (output_bfd
,
10635 contents
+ rel
->r_offset
- d_offset
);
10636 insn1
&= (1 << 26) - (1 << 2);
10637 insn1
|= 58 << 26; /* ld */
10638 insn2
= 0x7c636a14; /* add 3,3,13 */
10639 if (offset
!= (bfd_vma
) -1)
10640 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10642 if ((tls_mask
& TLS_EXPLICIT
) == 0)
10643 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10644 + R_PPC64_GOT_TPREL16_DS
);
10646 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
10647 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10652 insn1
= 0x3c6d0000; /* addis 3,13,0 */
10653 insn2
= 0x38630000; /* addi 3,3,0 */
10656 /* Was an LD reloc. */
10658 sec
= local_sections
[toc_symndx
];
10660 r_symndx
< symtab_hdr
->sh_info
;
10662 if (local_sections
[r_symndx
] == sec
)
10664 if (r_symndx
>= symtab_hdr
->sh_info
)
10666 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10668 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
10669 + sec
->output_offset
10670 + sec
->output_section
->vma
);
10672 else if (toc_symndx
!= 0)
10674 r_symndx
= toc_symndx
;
10675 rel
->r_addend
= toc_addend
;
10677 r_type
= R_PPC64_TPREL16_HA
;
10678 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10679 if (offset
!= (bfd_vma
) -1)
10681 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
10682 R_PPC64_TPREL16_LO
);
10683 rel
[1].r_offset
= offset
+ d_offset
;
10684 rel
[1].r_addend
= rel
->r_addend
;
10687 bfd_put_32 (output_bfd
, insn1
,
10688 contents
+ rel
->r_offset
- d_offset
);
10689 if (offset
!= (bfd_vma
) -1)
10691 insn3
= bfd_get_32 (output_bfd
,
10692 contents
+ offset
+ 4);
10694 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10696 rel
[1].r_offset
+= 4;
10697 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10700 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10702 if ((tls_mask
& tls_gd
) == 0
10703 && (tls_gd
== 0 || toc_symndx
!= 0))
10705 /* We changed the symbol. Start over in order
10706 to get h, sym, sec etc. right. */
10713 case R_PPC64_TLSGD
:
10714 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10716 unsigned int insn2
, insn3
;
10717 bfd_vma offset
= rel
->r_offset
;
10719 if ((tls_mask
& TLS_TPRELGD
) != 0)
10722 r_type
= R_PPC64_NONE
;
10723 insn2
= 0x7c636a14; /* add 3,3,13 */
10728 if (toc_symndx
!= 0)
10730 r_symndx
= toc_symndx
;
10731 rel
->r_addend
= toc_addend
;
10733 r_type
= R_PPC64_TPREL16_LO
;
10734 rel
->r_offset
= offset
+ d_offset
;
10735 insn2
= 0x38630000; /* addi 3,3,0 */
10737 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10738 /* Zap the reloc on the _tls_get_addr call too. */
10739 BFD_ASSERT (offset
== rel
[1].r_offset
);
10740 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10742 insn3
= bfd_get_32 (output_bfd
,
10743 contents
+ offset
+ 4);
10745 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10747 rel
->r_offset
+= 4;
10748 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10751 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10752 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
10760 case R_PPC64_TLSLD
:
10761 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10763 unsigned int insn2
, insn3
;
10764 bfd_vma offset
= rel
->r_offset
;
10767 sec
= local_sections
[toc_symndx
];
10769 r_symndx
< symtab_hdr
->sh_info
;
10771 if (local_sections
[r_symndx
] == sec
)
10773 if (r_symndx
>= symtab_hdr
->sh_info
)
10775 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10777 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
10778 + sec
->output_offset
10779 + sec
->output_section
->vma
);
10781 r_type
= R_PPC64_TPREL16_LO
;
10782 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10783 rel
->r_offset
= offset
+ d_offset
;
10784 /* Zap the reloc on the _tls_get_addr call too. */
10785 BFD_ASSERT (offset
== rel
[1].r_offset
);
10786 rel
[1].r_info
= ELF64_R_INFO (ELF64_R_SYM (rel
[1].r_info
),
10788 insn2
= 0x38630000; /* addi 3,3,0 */
10789 insn3
= bfd_get_32 (output_bfd
,
10790 contents
+ offset
+ 4);
10792 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10794 rel
->r_offset
+= 4;
10795 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
10798 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10804 case R_PPC64_DTPMOD64
:
10805 if (rel
+ 1 < relend
10806 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
10807 && rel
[1].r_offset
== rel
->r_offset
+ 8)
10809 if ((tls_mask
& TLS_GD
) == 0)
10811 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
10812 if ((tls_mask
& TLS_TPRELGD
) != 0)
10813 r_type
= R_PPC64_TPREL64
;
10816 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10817 r_type
= R_PPC64_NONE
;
10819 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10824 if ((tls_mask
& TLS_LD
) == 0)
10826 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10827 r_type
= R_PPC64_NONE
;
10828 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10833 case R_PPC64_TPREL64
:
10834 if ((tls_mask
& TLS_TPREL
) == 0)
10836 r_type
= R_PPC64_NONE
;
10837 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10842 /* Handle other relocations that tweak non-addend part of insn. */
10844 max_br_offset
= 1 << 25;
10845 addend
= rel
->r_addend
;
10851 /* Branch taken prediction relocations. */
10852 case R_PPC64_ADDR14_BRTAKEN
:
10853 case R_PPC64_REL14_BRTAKEN
:
10854 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10857 /* Branch not taken prediction relocations. */
10858 case R_PPC64_ADDR14_BRNTAKEN
:
10859 case R_PPC64_REL14_BRNTAKEN
:
10860 insn
|= bfd_get_32 (output_bfd
,
10861 contents
+ rel
->r_offset
) & ~(0x01 << 21);
10864 case R_PPC64_REL14
:
10865 max_br_offset
= 1 << 15;
10868 case R_PPC64_REL24
:
10869 /* Calls to functions with a different TOC, such as calls to
10870 shared objects, need to alter the TOC pointer. This is
10871 done using a linkage stub. A REL24 branching to these
10872 linkage stubs needs to be followed by a nop, as the nop
10873 will be replaced with an instruction to restore the TOC
10878 && (((fdh
= h
->oh
) != NULL
10879 && fdh
->elf
.plt
.plist
!= NULL
)
10880 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
10882 && sec
->output_section
!= NULL
10883 && sec
->id
<= htab
->top_id
10884 && (htab
->stub_group
[sec
->id
].toc_off
10885 != htab
->stub_group
[input_section
->id
].toc_off
)))
10886 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
10887 rel
, htab
)) != NULL
10888 && (stub_entry
->stub_type
== ppc_stub_plt_call
10889 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
10890 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
10892 bfd_boolean can_plt_call
= FALSE
;
10894 if (rel
->r_offset
+ 8 <= input_section
->size
)
10897 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
10899 || nop
== CROR_151515
|| nop
== CROR_313131
)
10901 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10902 contents
+ rel
->r_offset
+ 4);
10903 can_plt_call
= TRUE
;
10909 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10911 /* If this is a plain branch rather than a branch
10912 and link, don't require a nop. However, don't
10913 allow tail calls in a shared library as they
10914 will result in r2 being corrupted. */
10916 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10917 if (info
->executable
&& (br
& 1) == 0)
10918 can_plt_call
= TRUE
;
10923 && strcmp (h
->elf
.root
.root
.string
,
10924 ".__libc_start_main") == 0)
10926 /* Allow crt1 branch to go via a toc adjusting stub. */
10927 can_plt_call
= TRUE
;
10931 if (strcmp (input_section
->output_section
->name
,
10933 || strcmp (input_section
->output_section
->name
,
10935 (*_bfd_error_handler
)
10936 (_("%B(%A+0x%lx): automatic multiple TOCs "
10937 "not supported using your crt files; "
10938 "recompile with -mminimal-toc or upgrade gcc"),
10941 (long) rel
->r_offset
);
10943 (*_bfd_error_handler
)
10944 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10945 "does not allow automatic multiple TOCs; "
10946 "recompile with -mminimal-toc or "
10947 "-fno-optimize-sibling-calls, "
10948 "or make `%s' extern"),
10951 (long) rel
->r_offset
,
10954 bfd_set_error (bfd_error_bad_value
);
10960 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10961 unresolved_reloc
= FALSE
;
10964 if (stub_entry
== NULL
10965 && get_opd_info (sec
) != NULL
)
10967 /* The branch destination is the value of the opd entry. */
10968 bfd_vma off
= (relocation
+ addend
10969 - sec
->output_section
->vma
10970 - sec
->output_offset
);
10971 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10972 if (dest
!= (bfd_vma
) -1)
10979 /* If the branch is out of reach we ought to have a long
10981 from
= (rel
->r_offset
10982 + input_section
->output_offset
10983 + input_section
->output_section
->vma
);
10985 if (stub_entry
== NULL
10986 && (relocation
+ addend
- from
+ max_br_offset
10987 >= 2 * max_br_offset
)
10988 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10989 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10990 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10993 if (stub_entry
!= NULL
)
10995 /* Munge up the value and addend so that we call the stub
10996 rather than the procedure directly. */
10997 relocation
= (stub_entry
->stub_offset
10998 + stub_entry
->stub_sec
->output_offset
10999 + stub_entry
->stub_sec
->output_section
->vma
);
11007 /* Set 'a' bit. This is 0b00010 in BO field for branch
11008 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11009 for branch on CTR insns (BO == 1a00t or 1a01t). */
11010 if ((insn
& (0x14 << 21)) == (0x04 << 21))
11011 insn
|= 0x02 << 21;
11012 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
11013 insn
|= 0x08 << 21;
11019 /* Invert 'y' bit if not the default. */
11020 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
11021 insn
^= 0x01 << 21;
11024 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11027 /* NOP out calls to undefined weak functions.
11028 We can thus call a weak function without first
11029 checking whether the function is defined. */
11031 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11032 && r_type
== R_PPC64_REL24
11036 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11042 /* Set `addend'. */
11047 (*_bfd_error_handler
)
11048 (_("%B: unknown relocation type %d for symbol %s"),
11049 input_bfd
, (int) r_type
, sym_name
);
11051 bfd_set_error (bfd_error_bad_value
);
11057 case R_PPC64_TLSGD
:
11058 case R_PPC64_TLSLD
:
11059 case R_PPC64_GNU_VTINHERIT
:
11060 case R_PPC64_GNU_VTENTRY
:
11063 /* GOT16 relocations. Like an ADDR16 using the symbol's
11064 address in the GOT as relocation value instead of the
11065 symbol's value itself. Also, create a GOT entry for the
11066 symbol and put the symbol value there. */
11067 case R_PPC64_GOT_TLSGD16
:
11068 case R_PPC64_GOT_TLSGD16_LO
:
11069 case R_PPC64_GOT_TLSGD16_HI
:
11070 case R_PPC64_GOT_TLSGD16_HA
:
11071 tls_type
= TLS_TLS
| TLS_GD
;
11074 case R_PPC64_GOT_TLSLD16
:
11075 case R_PPC64_GOT_TLSLD16_LO
:
11076 case R_PPC64_GOT_TLSLD16_HI
:
11077 case R_PPC64_GOT_TLSLD16_HA
:
11078 tls_type
= TLS_TLS
| TLS_LD
;
11081 case R_PPC64_GOT_TPREL16_DS
:
11082 case R_PPC64_GOT_TPREL16_LO_DS
:
11083 case R_PPC64_GOT_TPREL16_HI
:
11084 case R_PPC64_GOT_TPREL16_HA
:
11085 tls_type
= TLS_TLS
| TLS_TPREL
;
11088 case R_PPC64_GOT_DTPREL16_DS
:
11089 case R_PPC64_GOT_DTPREL16_LO_DS
:
11090 case R_PPC64_GOT_DTPREL16_HI
:
11091 case R_PPC64_GOT_DTPREL16_HA
:
11092 tls_type
= TLS_TLS
| TLS_DTPREL
;
11095 case R_PPC64_GOT16
:
11096 case R_PPC64_GOT16_LO
:
11097 case R_PPC64_GOT16_HI
:
11098 case R_PPC64_GOT16_HA
:
11099 case R_PPC64_GOT16_DS
:
11100 case R_PPC64_GOT16_LO_DS
:
11103 /* Relocation is to the entry for this symbol in the global
11108 unsigned long indx
= 0;
11110 if (tls_type
== (TLS_TLS
| TLS_LD
)
11112 || !h
->elf
.def_dynamic
))
11113 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
11116 struct got_entry
*ent
;
11120 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
11121 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
11124 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
11125 /* This is actually a static link, or it is a
11126 -Bsymbolic link and the symbol is defined
11127 locally, or the symbol was forced to be local
11128 because of a version file. */
11132 indx
= h
->elf
.dynindx
;
11133 unresolved_reloc
= FALSE
;
11135 ent
= h
->elf
.got
.glist
;
11139 if (local_got_ents
== NULL
)
11141 ent
= local_got_ents
[r_symndx
];
11144 for (; ent
!= NULL
; ent
= ent
->next
)
11145 if (ent
->addend
== orig_addend
11146 && ent
->owner
== input_bfd
11147 && ent
->tls_type
== tls_type
)
11151 offp
= &ent
->got
.offset
;
11154 got
= ppc64_elf_tdata (input_bfd
)->got
;
11158 /* The offset must always be a multiple of 8. We use the
11159 least significant bit to record whether we have already
11160 processed this entry. */
11162 if ((off
& 1) != 0)
11166 /* Generate relocs for the dynamic linker, except in
11167 the case of TLSLD where we'll use one entry per
11169 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
11172 if ((info
->shared
|| indx
!= 0)
11173 && (offp
== &ppc64_tlsld_got (input_bfd
)->offset
11175 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11176 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
11178 outrel
.r_offset
= (got
->output_section
->vma
11179 + got
->output_offset
11181 outrel
.r_addend
= addend
;
11182 if (tls_type
& (TLS_LD
| TLS_GD
))
11184 outrel
.r_addend
= 0;
11185 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
11186 if (tls_type
== (TLS_TLS
| TLS_GD
))
11188 loc
= relgot
->contents
;
11189 loc
+= (relgot
->reloc_count
++
11190 * sizeof (Elf64_External_Rela
));
11191 bfd_elf64_swap_reloca_out (output_bfd
,
11193 outrel
.r_offset
+= 8;
11194 outrel
.r_addend
= addend
;
11196 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11199 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
11200 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
11201 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11202 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
11203 else if (indx
== 0)
11205 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
11207 /* Write the .got section contents for the sake
11209 loc
= got
->contents
+ off
;
11210 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
11214 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
11216 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
11218 outrel
.r_addend
+= relocation
;
11219 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
11220 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
11222 loc
= relgot
->contents
;
11223 loc
+= (relgot
->reloc_count
++
11224 * sizeof (Elf64_External_Rela
));
11225 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11228 /* Init the .got section contents here if we're not
11229 emitting a reloc. */
11232 relocation
+= addend
;
11233 if (tls_type
== (TLS_TLS
| TLS_LD
))
11235 else if (tls_type
!= 0)
11237 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11238 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
11239 relocation
+= DTP_OFFSET
- TP_OFFSET
;
11241 if (tls_type
== (TLS_TLS
| TLS_GD
))
11243 bfd_put_64 (output_bfd
, relocation
,
11244 got
->contents
+ off
+ 8);
11249 bfd_put_64 (output_bfd
, relocation
,
11250 got
->contents
+ off
);
11254 if (off
>= (bfd_vma
) -2)
11257 relocation
= got
->output_offset
+ off
;
11259 /* TOC base (r2) is TOC start plus 0x8000. */
11260 addend
= -TOC_BASE_OFF
;
11264 case R_PPC64_PLT16_HA
:
11265 case R_PPC64_PLT16_HI
:
11266 case R_PPC64_PLT16_LO
:
11267 case R_PPC64_PLT32
:
11268 case R_PPC64_PLT64
:
11269 /* Relocation is to the entry for this symbol in the
11270 procedure linkage table. */
11272 /* Resolve a PLT reloc against a local symbol directly,
11273 without using the procedure linkage table. */
11277 /* It's possible that we didn't make a PLT entry for this
11278 symbol. This happens when statically linking PIC code,
11279 or when using -Bsymbolic. Go find a match if there is a
11281 if (htab
->plt
!= NULL
)
11283 struct plt_entry
*ent
;
11284 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11285 if (ent
->addend
== orig_addend
11286 && ent
->plt
.offset
!= (bfd_vma
) -1)
11288 relocation
= (htab
->plt
->output_section
->vma
11289 + htab
->plt
->output_offset
11290 + ent
->plt
.offset
);
11291 unresolved_reloc
= FALSE
;
11297 /* Relocation value is TOC base. */
11298 relocation
= TOCstart
;
11300 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
11301 else if (unresolved_reloc
)
11303 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
11304 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
11306 unresolved_reloc
= TRUE
;
11309 /* TOC16 relocs. We want the offset relative to the TOC base,
11310 which is the address of the start of the TOC plus 0x8000.
11311 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11313 case R_PPC64_TOC16
:
11314 case R_PPC64_TOC16_LO
:
11315 case R_PPC64_TOC16_HI
:
11316 case R_PPC64_TOC16_DS
:
11317 case R_PPC64_TOC16_LO_DS
:
11318 case R_PPC64_TOC16_HA
:
11319 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
11322 /* Relocate against the beginning of the section. */
11323 case R_PPC64_SECTOFF
:
11324 case R_PPC64_SECTOFF_LO
:
11325 case R_PPC64_SECTOFF_HI
:
11326 case R_PPC64_SECTOFF_DS
:
11327 case R_PPC64_SECTOFF_LO_DS
:
11328 case R_PPC64_SECTOFF_HA
:
11330 addend
-= sec
->output_section
->vma
;
11333 case R_PPC64_REL14
:
11334 case R_PPC64_REL14_BRNTAKEN
:
11335 case R_PPC64_REL14_BRTAKEN
:
11336 case R_PPC64_REL24
:
11339 case R_PPC64_TPREL16
:
11340 case R_PPC64_TPREL16_LO
:
11341 case R_PPC64_TPREL16_HI
:
11342 case R_PPC64_TPREL16_HA
:
11343 case R_PPC64_TPREL16_DS
:
11344 case R_PPC64_TPREL16_LO_DS
:
11345 case R_PPC64_TPREL16_HIGHER
:
11346 case R_PPC64_TPREL16_HIGHERA
:
11347 case R_PPC64_TPREL16_HIGHEST
:
11348 case R_PPC64_TPREL16_HIGHESTA
:
11349 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11351 /* The TPREL16 relocs shouldn't really be used in shared
11352 libs as they will result in DT_TEXTREL being set, but
11353 support them anyway. */
11357 case R_PPC64_DTPREL16
:
11358 case R_PPC64_DTPREL16_LO
:
11359 case R_PPC64_DTPREL16_HI
:
11360 case R_PPC64_DTPREL16_HA
:
11361 case R_PPC64_DTPREL16_DS
:
11362 case R_PPC64_DTPREL16_LO_DS
:
11363 case R_PPC64_DTPREL16_HIGHER
:
11364 case R_PPC64_DTPREL16_HIGHERA
:
11365 case R_PPC64_DTPREL16_HIGHEST
:
11366 case R_PPC64_DTPREL16_HIGHESTA
:
11367 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11370 case R_PPC64_DTPMOD64
:
11375 case R_PPC64_TPREL64
:
11376 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
11379 case R_PPC64_DTPREL64
:
11380 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11383 /* Relocations that may need to be propagated if this is a
11385 case R_PPC64_REL30
:
11386 case R_PPC64_REL32
:
11387 case R_PPC64_REL64
:
11388 case R_PPC64_ADDR14
:
11389 case R_PPC64_ADDR14_BRNTAKEN
:
11390 case R_PPC64_ADDR14_BRTAKEN
:
11391 case R_PPC64_ADDR16
:
11392 case R_PPC64_ADDR16_DS
:
11393 case R_PPC64_ADDR16_HA
:
11394 case R_PPC64_ADDR16_HI
:
11395 case R_PPC64_ADDR16_HIGHER
:
11396 case R_PPC64_ADDR16_HIGHERA
:
11397 case R_PPC64_ADDR16_HIGHEST
:
11398 case R_PPC64_ADDR16_HIGHESTA
:
11399 case R_PPC64_ADDR16_LO
:
11400 case R_PPC64_ADDR16_LO_DS
:
11401 case R_PPC64_ADDR24
:
11402 case R_PPC64_ADDR32
:
11403 case R_PPC64_ADDR64
:
11404 case R_PPC64_UADDR16
:
11405 case R_PPC64_UADDR32
:
11406 case R_PPC64_UADDR64
:
11408 if ((input_section
->flags
& SEC_ALLOC
) == 0)
11411 if (NO_OPD_RELOCS
&& is_opd
)
11416 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
11417 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
11418 && (must_be_dyn_reloc (info
, r_type
)
11419 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
11420 || (ELIMINATE_COPY_RELOCS
11423 && h
->elf
.dynindx
!= -1
11424 && !h
->elf
.non_got_ref
11425 && !h
->elf
.def_regular
))
11427 Elf_Internal_Rela outrel
;
11428 bfd_boolean skip
, relocate
;
11433 /* When generating a dynamic object, these relocations
11434 are copied into the output file to be resolved at run
11440 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
11441 input_section
, rel
->r_offset
);
11442 if (out_off
== (bfd_vma
) -1)
11444 else if (out_off
== (bfd_vma
) -2)
11445 skip
= TRUE
, relocate
= TRUE
;
11446 out_off
+= (input_section
->output_section
->vma
11447 + input_section
->output_offset
);
11448 outrel
.r_offset
= out_off
;
11449 outrel
.r_addend
= rel
->r_addend
;
11451 /* Optimize unaligned reloc use. */
11452 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
11453 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
11454 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
11455 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
11456 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
11457 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
11458 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
11459 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
11460 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
11463 memset (&outrel
, 0, sizeof outrel
);
11464 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
11466 && r_type
!= R_PPC64_TOC
)
11467 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
11470 /* This symbol is local, or marked to become local,
11471 or this is an opd section reloc which must point
11472 at a local function. */
11473 outrel
.r_addend
+= relocation
;
11474 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
11476 if (is_opd
&& h
!= NULL
)
11478 /* Lie about opd entries. This case occurs
11479 when building shared libraries and we
11480 reference a function in another shared
11481 lib. The same thing happens for a weak
11482 definition in an application that's
11483 overridden by a strong definition in a
11484 shared lib. (I believe this is a generic
11485 bug in binutils handling of weak syms.)
11486 In these cases we won't use the opd
11487 entry in this lib. */
11488 unresolved_reloc
= FALSE
;
11490 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11492 /* We need to relocate .opd contents for ld.so.
11493 Prelink also wants simple and consistent rules
11494 for relocs. This make all RELATIVE relocs have
11495 *r_offset equal to r_addend. */
11502 if (r_symndx
== 0 || bfd_is_abs_section (sec
))
11504 else if (sec
== NULL
|| sec
->owner
== NULL
)
11506 bfd_set_error (bfd_error_bad_value
);
11513 osec
= sec
->output_section
;
11514 indx
= elf_section_data (osec
)->dynindx
;
11518 if ((osec
->flags
& SEC_READONLY
) == 0
11519 && htab
->elf
.data_index_section
!= NULL
)
11520 osec
= htab
->elf
.data_index_section
;
11522 osec
= htab
->elf
.text_index_section
;
11523 indx
= elf_section_data (osec
)->dynindx
;
11525 BFD_ASSERT (indx
!= 0);
11527 /* We are turning this relocation into one
11528 against a section symbol, so subtract out
11529 the output section's address but not the
11530 offset of the input section in the output
11532 outrel
.r_addend
-= osec
->vma
;
11535 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
11539 sreloc
= elf_section_data (input_section
)->sreloc
;
11540 if (sreloc
== NULL
)
11543 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
11546 loc
= sreloc
->contents
;
11547 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11548 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11550 /* If this reloc is against an external symbol, it will
11551 be computed at runtime, so there's no need to do
11552 anything now. However, for the sake of prelink ensure
11553 that the section contents are a known value. */
11556 unresolved_reloc
= FALSE
;
11557 /* The value chosen here is quite arbitrary as ld.so
11558 ignores section contents except for the special
11559 case of .opd where the contents might be accessed
11560 before relocation. Choose zero, as that won't
11561 cause reloc overflow. */
11564 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11565 to improve backward compatibility with older
11567 if (r_type
== R_PPC64_ADDR64
)
11568 addend
= outrel
.r_addend
;
11569 /* Adjust pc_relative relocs to have zero in *r_offset. */
11570 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
11571 addend
= (input_section
->output_section
->vma
11572 + input_section
->output_offset
11579 case R_PPC64_GLOB_DAT
:
11580 case R_PPC64_JMP_SLOT
:
11581 case R_PPC64_RELATIVE
:
11582 /* We shouldn't ever see these dynamic relocs in relocatable
11584 /* Fall through. */
11586 case R_PPC64_PLTGOT16
:
11587 case R_PPC64_PLTGOT16_DS
:
11588 case R_PPC64_PLTGOT16_HA
:
11589 case R_PPC64_PLTGOT16_HI
:
11590 case R_PPC64_PLTGOT16_LO
:
11591 case R_PPC64_PLTGOT16_LO_DS
:
11592 case R_PPC64_PLTREL32
:
11593 case R_PPC64_PLTREL64
:
11594 /* These ones haven't been implemented yet. */
11596 (*_bfd_error_handler
)
11597 (_("%B: relocation %s is not supported for symbol %s."),
11599 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
11601 bfd_set_error (bfd_error_invalid_operation
);
11606 /* Do any further special processing. */
11612 case R_PPC64_ADDR16_HA
:
11613 case R_PPC64_ADDR16_HIGHERA
:
11614 case R_PPC64_ADDR16_HIGHESTA
:
11615 case R_PPC64_TOC16_HA
:
11616 case R_PPC64_SECTOFF_HA
:
11617 case R_PPC64_TPREL16_HA
:
11618 case R_PPC64_DTPREL16_HA
:
11619 case R_PPC64_TPREL16_HIGHER
:
11620 case R_PPC64_TPREL16_HIGHERA
:
11621 case R_PPC64_TPREL16_HIGHEST
:
11622 case R_PPC64_TPREL16_HIGHESTA
:
11623 case R_PPC64_DTPREL16_HIGHER
:
11624 case R_PPC64_DTPREL16_HIGHERA
:
11625 case R_PPC64_DTPREL16_HIGHEST
:
11626 case R_PPC64_DTPREL16_HIGHESTA
:
11627 /* It's just possible that this symbol is a weak symbol
11628 that's not actually defined anywhere. In that case,
11629 'sec' would be NULL, and we should leave the symbol
11630 alone (it will be set to zero elsewhere in the link). */
11635 case R_PPC64_GOT16_HA
:
11636 case R_PPC64_PLTGOT16_HA
:
11637 case R_PPC64_PLT16_HA
:
11638 case R_PPC64_GOT_TLSGD16_HA
:
11639 case R_PPC64_GOT_TLSLD16_HA
:
11640 case R_PPC64_GOT_TPREL16_HA
:
11641 case R_PPC64_GOT_DTPREL16_HA
:
11642 /* Add 0x10000 if sign bit in 0:15 is set.
11643 Bits 0:15 are not used. */
11647 case R_PPC64_ADDR16_DS
:
11648 case R_PPC64_ADDR16_LO_DS
:
11649 case R_PPC64_GOT16_DS
:
11650 case R_PPC64_GOT16_LO_DS
:
11651 case R_PPC64_PLT16_LO_DS
:
11652 case R_PPC64_SECTOFF_DS
:
11653 case R_PPC64_SECTOFF_LO_DS
:
11654 case R_PPC64_TOC16_DS
:
11655 case R_PPC64_TOC16_LO_DS
:
11656 case R_PPC64_PLTGOT16_DS
:
11657 case R_PPC64_PLTGOT16_LO_DS
:
11658 case R_PPC64_GOT_TPREL16_DS
:
11659 case R_PPC64_GOT_TPREL16_LO_DS
:
11660 case R_PPC64_GOT_DTPREL16_DS
:
11661 case R_PPC64_GOT_DTPREL16_LO_DS
:
11662 case R_PPC64_TPREL16_DS
:
11663 case R_PPC64_TPREL16_LO_DS
:
11664 case R_PPC64_DTPREL16_DS
:
11665 case R_PPC64_DTPREL16_LO_DS
:
11666 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
11668 /* If this reloc is against an lq insn, then the value must be
11669 a multiple of 16. This is somewhat of a hack, but the
11670 "correct" way to do this by defining _DQ forms of all the
11671 _DS relocs bloats all reloc switches in this file. It
11672 doesn't seem to make much sense to use any of these relocs
11673 in data, so testing the insn should be safe. */
11674 if ((insn
& (0x3f << 26)) == (56u << 26))
11676 if (((relocation
+ addend
) & mask
) != 0)
11678 (*_bfd_error_handler
)
11679 (_("%B: error: relocation %s not a multiple of %d"),
11681 ppc64_elf_howto_table
[r_type
]->name
,
11683 bfd_set_error (bfd_error_bad_value
);
11690 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11691 because such sections are not SEC_ALLOC and thus ld.so will
11692 not process them. */
11693 if (unresolved_reloc
11694 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
11695 && h
->elf
.def_dynamic
))
11697 (*_bfd_error_handler
)
11698 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11701 (long) rel
->r_offset
,
11702 ppc64_elf_howto_table
[(int) r_type
]->name
,
11703 h
->elf
.root
.root
.string
);
11707 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
11715 if (r
!= bfd_reloc_ok
)
11717 if (sym_name
== NULL
)
11718 sym_name
= "(null)";
11719 if (r
== bfd_reloc_overflow
)
11724 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11725 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
11727 /* Assume this is a call protected by other code that
11728 detects the symbol is undefined. If this is the case,
11729 we can safely ignore the overflow. If not, the
11730 program is hosed anyway, and a little warning isn't
11736 if (!((*info
->callbacks
->reloc_overflow
)
11737 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
11738 ppc64_elf_howto_table
[r_type
]->name
,
11739 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
11744 (*_bfd_error_handler
)
11745 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11748 (long) rel
->r_offset
,
11749 ppc64_elf_howto_table
[r_type
]->name
,
11757 /* If we're emitting relocations, then shortly after this function
11758 returns, reloc offsets and addends for this section will be
11759 adjusted. Worse, reloc symbol indices will be for the output
11760 file rather than the input. Save a copy of the relocs for
11761 opd_entry_value. */
11762 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
11765 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
11766 rel
= bfd_alloc (input_bfd
, amt
);
11767 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
11768 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
11771 memcpy (rel
, relocs
, amt
);
11776 /* Adjust the value of any local symbols in opd sections. */
11779 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
11780 const char *name ATTRIBUTE_UNUSED
,
11781 Elf_Internal_Sym
*elfsym
,
11782 asection
*input_sec
,
11783 struct elf_link_hash_entry
*h
)
11785 struct _opd_sec_data
*opd
;
11792 opd
= get_opd_info (input_sec
);
11793 if (opd
== NULL
|| opd
->adjust
== NULL
)
11796 value
= elfsym
->st_value
- input_sec
->output_offset
;
11797 if (!info
->relocatable
)
11798 value
-= input_sec
->output_section
->vma
;
11800 adjust
= opd
->adjust
[value
/ 8];
11804 elfsym
->st_value
+= adjust
;
11808 /* Finish up dynamic symbol handling. We set the contents of various
11809 dynamic sections here. */
11812 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
11813 struct bfd_link_info
*info
,
11814 struct elf_link_hash_entry
*h
,
11815 Elf_Internal_Sym
*sym
)
11817 struct ppc_link_hash_table
*htab
;
11818 struct plt_entry
*ent
;
11819 Elf_Internal_Rela rela
;
11822 htab
= ppc_hash_table (info
);
11824 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11825 if (ent
->plt
.offset
!= (bfd_vma
) -1)
11827 /* This symbol has an entry in the procedure linkage
11828 table. Set it up. */
11830 if (htab
->plt
== NULL
11831 || htab
->relplt
== NULL
11832 || htab
->glink
== NULL
)
11835 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11836 fill in the PLT entry. */
11837 rela
.r_offset
= (htab
->plt
->output_section
->vma
11838 + htab
->plt
->output_offset
11839 + ent
->plt
.offset
);
11840 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
11841 rela
.r_addend
= ent
->addend
;
11843 loc
= htab
->relplt
->contents
;
11844 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
11845 * sizeof (Elf64_External_Rela
));
11846 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11851 Elf_Internal_Rela rela
;
11854 /* This symbol needs a copy reloc. Set it up. */
11856 if (h
->dynindx
== -1
11857 || (h
->root
.type
!= bfd_link_hash_defined
11858 && h
->root
.type
!= bfd_link_hash_defweak
)
11859 || htab
->relbss
== NULL
)
11862 rela
.r_offset
= (h
->root
.u
.def
.value
11863 + h
->root
.u
.def
.section
->output_section
->vma
11864 + h
->root
.u
.def
.section
->output_offset
);
11865 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
11867 loc
= htab
->relbss
->contents
;
11868 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11869 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11872 /* Mark some specially defined symbols as absolute. */
11873 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
11874 sym
->st_shndx
= SHN_ABS
;
11879 /* Used to decide how to sort relocs in an optimal manner for the
11880 dynamic linker, before writing them out. */
11882 static enum elf_reloc_type_class
11883 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
11885 enum elf_ppc64_reloc_type r_type
;
11887 r_type
= ELF64_R_TYPE (rela
->r_info
);
11890 case R_PPC64_RELATIVE
:
11891 return reloc_class_relative
;
11892 case R_PPC64_JMP_SLOT
:
11893 return reloc_class_plt
;
11895 return reloc_class_copy
;
11897 return reloc_class_normal
;
11901 /* Finish up the dynamic sections. */
11904 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
11905 struct bfd_link_info
*info
)
11907 struct ppc_link_hash_table
*htab
;
11911 htab
= ppc_hash_table (info
);
11912 dynobj
= htab
->elf
.dynobj
;
11913 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11915 if (htab
->elf
.dynamic_sections_created
)
11917 Elf64_External_Dyn
*dyncon
, *dynconend
;
11919 if (sdyn
== NULL
|| htab
->got
== NULL
)
11922 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11923 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11924 for (; dyncon
< dynconend
; dyncon
++)
11926 Elf_Internal_Dyn dyn
;
11929 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11936 case DT_PPC64_GLINK
:
11938 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11939 /* We stupidly defined DT_PPC64_GLINK to be the start
11940 of glink rather than the first entry point, which is
11941 what ld.so needs, and now have a bigger stub to
11942 support automatic multiple TOCs. */
11943 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11947 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11950 dyn
.d_un
.d_ptr
= s
->vma
;
11953 case DT_PPC64_OPDSZ
:
11954 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11957 dyn
.d_un
.d_val
= s
->size
;
11962 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11967 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11971 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11975 /* Don't count procedure linkage table relocs in the
11976 overall reloc count. */
11980 dyn
.d_un
.d_val
-= s
->size
;
11984 /* We may not be using the standard ELF linker script.
11985 If .rela.plt is the first .rela section, we adjust
11986 DT_RELA to not include it. */
11990 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11992 dyn
.d_un
.d_ptr
+= s
->size
;
11996 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
12000 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
12002 /* Fill in the first entry in the global offset table.
12003 We use it to hold the link-time TOCbase. */
12004 bfd_put_64 (output_bfd
,
12005 elf_gp (output_bfd
) + TOC_BASE_OFF
,
12006 htab
->got
->contents
);
12008 /* Set .got entry size. */
12009 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
12012 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
12014 /* Set .plt entry size. */
12015 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
12019 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
12020 brlt ourselves if emitrelocations. */
12021 if (htab
->brlt
!= NULL
12022 && htab
->brlt
->reloc_count
!= 0
12023 && !_bfd_elf_link_output_relocs (output_bfd
,
12025 &elf_section_data (htab
->brlt
)->rel_hdr
,
12026 elf_section_data (htab
->brlt
)->relocs
,
12030 if (htab
->glink
!= NULL
12031 && htab
->glink
->reloc_count
!= 0
12032 && !_bfd_elf_link_output_relocs (output_bfd
,
12034 &elf_section_data (htab
->glink
)->rel_hdr
,
12035 elf_section_data (htab
->glink
)->relocs
,
12039 /* We need to handle writing out multiple GOT sections ourselves,
12040 since we didn't add them to DYNOBJ. We know dynobj is the first
12042 while ((dynobj
= dynobj
->link_next
) != NULL
)
12046 if (!is_ppc64_elf (dynobj
))
12049 s
= ppc64_elf_tdata (dynobj
)->got
;
12052 && s
->output_section
!= bfd_abs_section_ptr
12053 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12054 s
->contents
, s
->output_offset
,
12057 s
= ppc64_elf_tdata (dynobj
)->relgot
;
12060 && s
->output_section
!= bfd_abs_section_ptr
12061 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
12062 s
->contents
, s
->output_offset
,
12070 #include "elf64-target.h"