1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
57 static bfd_vma opd_entry_value
58 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
111 #define elf_backend_action_discarded ppc64_elf_action_discarded
112 #define elf_backend_relocate_section ppc64_elf_relocate_section
113 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
114 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
115 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
116 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
117 #define elf_backend_special_sections ppc64_elf_special_sections
118 #define elf_backend_post_process_headers _bfd_elf_set_osabi
120 /* The name of the dynamic interpreter. This is put in the .interp
122 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124 /* The size in bytes of an entry in the procedure linkage table. */
125 #define PLT_ENTRY_SIZE 24
127 /* The initial size of the plt reserved for the dynamic linker. */
128 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
130 /* TOC base pointers offset from start of TOC. */
131 #define TOC_BASE_OFF 0x8000
133 /* Offset of tp and dtp pointers from start of TLS block. */
134 #define TP_OFFSET 0x7000
135 #define DTP_OFFSET 0x8000
137 /* .plt call stub instructions. The normal stub is like this, but
138 sometimes the .plt entry crosses a 64k boundary and we need to
139 insert an addi to adjust r12. */
140 #define PLT_CALL_STUB_SIZE (7*4)
141 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
142 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
143 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
144 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
145 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
146 /* ld %r11,xxx+16@l(%r12) */
147 #define BCTR 0x4e800420 /* bctr */
150 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
151 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
152 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
153 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
155 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
156 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
158 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
160 /* glink call stub instructions. We enter with the index in R0. */
161 #define GLINK_CALL_STUB_SIZE (16*4)
165 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
166 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
168 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
169 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
170 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
171 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
179 #define NOP 0x60000000
181 /* Some other nops. */
182 #define CROR_151515 0x4def7b82
183 #define CROR_313131 0x4ffffb82
185 /* .glink entries for the first 32k functions are two instructions. */
186 #define LI_R0_0 0x38000000 /* li %r0,0 */
187 #define B_DOT 0x48000000 /* b . */
189 /* After that, we need two instructions to load the index, followed by
191 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
192 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
194 /* Instructions used by the save and restore reg functions. */
195 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
196 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
197 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
198 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
199 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
200 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
201 #define LI_R12_0 0x39800000 /* li %r12,0 */
202 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
203 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
204 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
205 #define BLR 0x4e800020 /* blr */
207 /* Since .opd is an array of descriptors and each entry will end up
208 with identical R_PPC64_RELATIVE relocs, there is really no need to
209 propagate .opd relocs; The dynamic linker should be taught to
210 relocate .opd without reloc entries. */
211 #ifndef NO_OPD_RELOCS
212 #define NO_OPD_RELOCS 0
215 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
217 /* Relocation HOWTO's. */
218 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
220 static reloc_howto_type ppc64_elf_howto_raw
[] = {
221 /* This reloc does nothing. */
222 HOWTO (R_PPC64_NONE
, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE
, /* pc_relative */
228 complain_overflow_dont
, /* complain_on_overflow */
229 bfd_elf_generic_reloc
, /* special_function */
230 "R_PPC64_NONE", /* name */
231 FALSE
, /* partial_inplace */
234 FALSE
), /* pcrel_offset */
236 /* A standard 32 bit relocation. */
237 HOWTO (R_PPC64_ADDR32
, /* type */
239 2, /* size (0 = byte, 1 = short, 2 = long) */
241 FALSE
, /* pc_relative */
243 complain_overflow_bitfield
, /* complain_on_overflow */
244 bfd_elf_generic_reloc
, /* special_function */
245 "R_PPC64_ADDR32", /* name */
246 FALSE
, /* partial_inplace */
248 0xffffffff, /* dst_mask */
249 FALSE
), /* pcrel_offset */
251 /* An absolute 26 bit branch; the lower two bits must be zero.
252 FIXME: we don't check that, we just clear them. */
253 HOWTO (R_PPC64_ADDR24
, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE
, /* pc_relative */
259 complain_overflow_bitfield
, /* complain_on_overflow */
260 bfd_elf_generic_reloc
, /* special_function */
261 "R_PPC64_ADDR24", /* name */
262 FALSE
, /* partial_inplace */
264 0x03fffffc, /* dst_mask */
265 FALSE
), /* pcrel_offset */
267 /* A standard 16 bit relocation. */
268 HOWTO (R_PPC64_ADDR16
, /* type */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
272 FALSE
, /* pc_relative */
274 complain_overflow_bitfield
, /* complain_on_overflow */
275 bfd_elf_generic_reloc
, /* special_function */
276 "R_PPC64_ADDR16", /* name */
277 FALSE
, /* partial_inplace */
279 0xffff, /* dst_mask */
280 FALSE
), /* pcrel_offset */
282 /* A 16 bit relocation without overflow. */
283 HOWTO (R_PPC64_ADDR16_LO
, /* type */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE
, /* pc_relative */
289 complain_overflow_dont
,/* complain_on_overflow */
290 bfd_elf_generic_reloc
, /* special_function */
291 "R_PPC64_ADDR16_LO", /* name */
292 FALSE
, /* partial_inplace */
294 0xffff, /* dst_mask */
295 FALSE
), /* pcrel_offset */
297 /* Bits 16-31 of an address. */
298 HOWTO (R_PPC64_ADDR16_HI
, /* type */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
302 FALSE
, /* pc_relative */
304 complain_overflow_dont
, /* complain_on_overflow */
305 bfd_elf_generic_reloc
, /* special_function */
306 "R_PPC64_ADDR16_HI", /* name */
307 FALSE
, /* partial_inplace */
309 0xffff, /* dst_mask */
310 FALSE
), /* pcrel_offset */
312 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
313 bits, treated as a signed number, is negative. */
314 HOWTO (R_PPC64_ADDR16_HA
, /* type */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE
, /* pc_relative */
320 complain_overflow_dont
, /* complain_on_overflow */
321 ppc64_elf_ha_reloc
, /* special_function */
322 "R_PPC64_ADDR16_HA", /* name */
323 FALSE
, /* partial_inplace */
325 0xffff, /* dst_mask */
326 FALSE
), /* pcrel_offset */
328 /* An absolute 16 bit branch; the lower two bits must be zero.
329 FIXME: we don't check that, we just clear them. */
330 HOWTO (R_PPC64_ADDR14
, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_bitfield
, /* complain_on_overflow */
337 ppc64_elf_branch_reloc
, /* special_function */
338 "R_PPC64_ADDR14", /* name */
339 FALSE
, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is expected to be taken. The lower two
346 bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc
, /* special_function */
355 "R_PPC64_ADDR14_BRTAKEN",/* name */
356 FALSE
, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* An absolute 16 bit branch, for which bit 10 should be set to
362 indicate that the branch is not expected to be taken. The lower
363 two bits must be zero. */
364 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
368 FALSE
, /* pc_relative */
370 complain_overflow_bitfield
, /* complain_on_overflow */
371 ppc64_elf_brtaken_reloc
, /* special_function */
372 "R_PPC64_ADDR14_BRNTAKEN",/* name */
373 FALSE
, /* partial_inplace */
375 0x0000fffc, /* dst_mask */
376 FALSE
), /* pcrel_offset */
378 /* A relative 26 bit branch; the lower two bits must be zero. */
379 HOWTO (R_PPC64_REL24
, /* type */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
383 TRUE
, /* pc_relative */
385 complain_overflow_signed
, /* complain_on_overflow */
386 ppc64_elf_branch_reloc
, /* special_function */
387 "R_PPC64_REL24", /* name */
388 FALSE
, /* partial_inplace */
390 0x03fffffc, /* dst_mask */
391 TRUE
), /* pcrel_offset */
393 /* A relative 16 bit branch; the lower two bits must be zero. */
394 HOWTO (R_PPC64_REL14
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 ppc64_elf_branch_reloc
, /* special_function */
402 "R_PPC64_REL14", /* name */
403 FALSE
, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE
), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is expected to be taken. The lower two bits must be
411 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE
, /* pc_relative */
417 complain_overflow_signed
, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc
, /* special_function */
419 "R_PPC64_REL14_BRTAKEN", /* name */
420 FALSE
, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE
), /* pcrel_offset */
425 /* A relative 16 bit branch. Bit 10 should be set to indicate that
426 the branch is not expected to be taken. The lower two bits must
428 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
430 2, /* size (0 = byte, 1 = short, 2 = long) */
432 TRUE
, /* pc_relative */
434 complain_overflow_signed
, /* complain_on_overflow */
435 ppc64_elf_brtaken_reloc
, /* special_function */
436 "R_PPC64_REL14_BRNTAKEN",/* name */
437 FALSE
, /* partial_inplace */
439 0x0000fffc, /* dst_mask */
440 TRUE
), /* pcrel_offset */
442 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
444 HOWTO (R_PPC64_GOT16
, /* type */
446 1, /* size (0 = byte, 1 = short, 2 = long) */
448 FALSE
, /* pc_relative */
450 complain_overflow_signed
, /* complain_on_overflow */
451 ppc64_elf_unhandled_reloc
, /* special_function */
452 "R_PPC64_GOT16", /* name */
453 FALSE
, /* partial_inplace */
455 0xffff, /* dst_mask */
456 FALSE
), /* pcrel_offset */
458 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
460 HOWTO (R_PPC64_GOT16_LO
, /* type */
462 1, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
, /* complain_on_overflow */
467 ppc64_elf_unhandled_reloc
, /* special_function */
468 "R_PPC64_GOT16_LO", /* name */
469 FALSE
, /* partial_inplace */
471 0xffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
474 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
476 HOWTO (R_PPC64_GOT16_HI
, /* type */
478 1, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE
, /* pc_relative */
482 complain_overflow_dont
,/* complain_on_overflow */
483 ppc64_elf_unhandled_reloc
, /* special_function */
484 "R_PPC64_GOT16_HI", /* name */
485 FALSE
, /* partial_inplace */
487 0xffff, /* dst_mask */
488 FALSE
), /* pcrel_offset */
490 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
492 HOWTO (R_PPC64_GOT16_HA
, /* type */
494 1, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_dont
,/* complain_on_overflow */
499 ppc64_elf_unhandled_reloc
, /* special_function */
500 "R_PPC64_GOT16_HA", /* name */
501 FALSE
, /* partial_inplace */
503 0xffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 /* This is used only by the dynamic linker. The symbol should exist
507 both in the object being run and in some shared library. The
508 dynamic linker copies the data addressed by the symbol from the
509 shared library into the object, because the object being
510 run has to have the data at some particular address. */
511 HOWTO (R_PPC64_COPY
, /* type */
513 0, /* this one is variable size */
515 FALSE
, /* pc_relative */
517 complain_overflow_dont
, /* complain_on_overflow */
518 ppc64_elf_unhandled_reloc
, /* special_function */
519 "R_PPC64_COPY", /* name */
520 FALSE
, /* partial_inplace */
523 FALSE
), /* pcrel_offset */
525 /* Like R_PPC64_ADDR64, but used when setting global offset table
527 HOWTO (R_PPC64_GLOB_DAT
, /* type */
529 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
531 FALSE
, /* pc_relative */
533 complain_overflow_dont
, /* complain_on_overflow */
534 ppc64_elf_unhandled_reloc
, /* special_function */
535 "R_PPC64_GLOB_DAT", /* name */
536 FALSE
, /* partial_inplace */
538 ONES (64), /* dst_mask */
539 FALSE
), /* pcrel_offset */
541 /* Created by the link editor. Marks a procedure linkage table
542 entry for a symbol. */
543 HOWTO (R_PPC64_JMP_SLOT
, /* type */
545 0, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE
, /* pc_relative */
549 complain_overflow_dont
, /* complain_on_overflow */
550 ppc64_elf_unhandled_reloc
, /* special_function */
551 "R_PPC64_JMP_SLOT", /* name */
552 FALSE
, /* partial_inplace */
555 FALSE
), /* pcrel_offset */
557 /* Used only by the dynamic linker. When the object is run, this
558 doubleword64 is set to the load address of the object, plus the
560 HOWTO (R_PPC64_RELATIVE
, /* type */
562 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
564 FALSE
, /* pc_relative */
566 complain_overflow_dont
, /* complain_on_overflow */
567 bfd_elf_generic_reloc
, /* special_function */
568 "R_PPC64_RELATIVE", /* name */
569 FALSE
, /* partial_inplace */
571 ONES (64), /* dst_mask */
572 FALSE
), /* pcrel_offset */
574 /* Like R_PPC64_ADDR32, but may be unaligned. */
575 HOWTO (R_PPC64_UADDR32
, /* type */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE
, /* pc_relative */
581 complain_overflow_bitfield
, /* complain_on_overflow */
582 bfd_elf_generic_reloc
, /* special_function */
583 "R_PPC64_UADDR32", /* name */
584 FALSE
, /* partial_inplace */
586 0xffffffff, /* dst_mask */
587 FALSE
), /* pcrel_offset */
589 /* Like R_PPC64_ADDR16, but may be unaligned. */
590 HOWTO (R_PPC64_UADDR16
, /* type */
592 1, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_bitfield
, /* complain_on_overflow */
597 bfd_elf_generic_reloc
, /* special_function */
598 "R_PPC64_UADDR16", /* name */
599 FALSE
, /* partial_inplace */
601 0xffff, /* dst_mask */
602 FALSE
), /* pcrel_offset */
604 /* 32-bit PC relative. */
605 HOWTO (R_PPC64_REL32
, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 TRUE
, /* pc_relative */
611 /* FIXME: Verify. Was complain_overflow_bitfield. */
612 complain_overflow_signed
, /* complain_on_overflow */
613 bfd_elf_generic_reloc
, /* special_function */
614 "R_PPC64_REL32", /* name */
615 FALSE
, /* partial_inplace */
617 0xffffffff, /* dst_mask */
618 TRUE
), /* pcrel_offset */
620 /* 32-bit relocation to the symbol's procedure linkage table. */
621 HOWTO (R_PPC64_PLT32
, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 FALSE
, /* pc_relative */
627 complain_overflow_bitfield
, /* complain_on_overflow */
628 ppc64_elf_unhandled_reloc
, /* special_function */
629 "R_PPC64_PLT32", /* name */
630 FALSE
, /* partial_inplace */
632 0xffffffff, /* dst_mask */
633 FALSE
), /* pcrel_offset */
635 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
636 FIXME: R_PPC64_PLTREL32 not supported. */
637 HOWTO (R_PPC64_PLTREL32
, /* type */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
641 TRUE
, /* pc_relative */
643 complain_overflow_signed
, /* complain_on_overflow */
644 bfd_elf_generic_reloc
, /* special_function */
645 "R_PPC64_PLTREL32", /* name */
646 FALSE
, /* partial_inplace */
648 0xffffffff, /* dst_mask */
649 TRUE
), /* pcrel_offset */
651 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
653 HOWTO (R_PPC64_PLT16_LO
, /* type */
655 1, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE
, /* pc_relative */
659 complain_overflow_dont
, /* complain_on_overflow */
660 ppc64_elf_unhandled_reloc
, /* special_function */
661 "R_PPC64_PLT16_LO", /* name */
662 FALSE
, /* partial_inplace */
664 0xffff, /* dst_mask */
665 FALSE
), /* pcrel_offset */
667 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
669 HOWTO (R_PPC64_PLT16_HI
, /* type */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
673 FALSE
, /* pc_relative */
675 complain_overflow_dont
, /* complain_on_overflow */
676 ppc64_elf_unhandled_reloc
, /* special_function */
677 "R_PPC64_PLT16_HI", /* name */
678 FALSE
, /* partial_inplace */
680 0xffff, /* dst_mask */
681 FALSE
), /* pcrel_offset */
683 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
685 HOWTO (R_PPC64_PLT16_HA
, /* type */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
, /* complain_on_overflow */
692 ppc64_elf_unhandled_reloc
, /* special_function */
693 "R_PPC64_PLT16_HA", /* name */
694 FALSE
, /* partial_inplace */
696 0xffff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 /* 16-bit section relative relocation. */
700 HOWTO (R_PPC64_SECTOFF
, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 FALSE
, /* pc_relative */
706 complain_overflow_bitfield
, /* complain_on_overflow */
707 ppc64_elf_sectoff_reloc
, /* special_function */
708 "R_PPC64_SECTOFF", /* name */
709 FALSE
, /* partial_inplace */
711 0xffff, /* dst_mask */
712 FALSE
), /* pcrel_offset */
714 /* Like R_PPC64_SECTOFF, but no overflow warning. */
715 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 FALSE
, /* pc_relative */
721 complain_overflow_dont
, /* complain_on_overflow */
722 ppc64_elf_sectoff_reloc
, /* special_function */
723 "R_PPC64_SECTOFF_LO", /* name */
724 FALSE
, /* partial_inplace */
726 0xffff, /* dst_mask */
727 FALSE
), /* pcrel_offset */
729 /* 16-bit upper half section relative relocation. */
730 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
734 FALSE
, /* pc_relative */
736 complain_overflow_dont
, /* complain_on_overflow */
737 ppc64_elf_sectoff_reloc
, /* special_function */
738 "R_PPC64_SECTOFF_HI", /* name */
739 FALSE
, /* partial_inplace */
741 0xffff, /* dst_mask */
742 FALSE
), /* pcrel_offset */
744 /* 16-bit upper half adjusted section relative relocation. */
745 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
749 FALSE
, /* pc_relative */
751 complain_overflow_dont
, /* complain_on_overflow */
752 ppc64_elf_sectoff_ha_reloc
, /* special_function */
753 "R_PPC64_SECTOFF_HA", /* name */
754 FALSE
, /* partial_inplace */
756 0xffff, /* dst_mask */
757 FALSE
), /* pcrel_offset */
759 /* Like R_PPC64_REL24 without touching the two least significant bits. */
760 HOWTO (R_PPC64_REL30
, /* type */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
764 TRUE
, /* pc_relative */
766 complain_overflow_dont
, /* complain_on_overflow */
767 bfd_elf_generic_reloc
, /* special_function */
768 "R_PPC64_REL30", /* name */
769 FALSE
, /* partial_inplace */
771 0xfffffffc, /* dst_mask */
772 TRUE
), /* pcrel_offset */
774 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
776 /* A standard 64-bit relocation. */
777 HOWTO (R_PPC64_ADDR64
, /* type */
779 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
781 FALSE
, /* pc_relative */
783 complain_overflow_dont
, /* complain_on_overflow */
784 bfd_elf_generic_reloc
, /* special_function */
785 "R_PPC64_ADDR64", /* name */
786 FALSE
, /* partial_inplace */
788 ONES (64), /* dst_mask */
789 FALSE
), /* pcrel_offset */
791 /* The bits 32-47 of an address. */
792 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_dont
, /* complain_on_overflow */
799 bfd_elf_generic_reloc
, /* special_function */
800 "R_PPC64_ADDR16_HIGHER", /* name */
801 FALSE
, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE
), /* pcrel_offset */
806 /* The bits 32-47 of an address, plus 1 if the contents of the low
807 16 bits, treated as a signed number, is negative. */
808 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
812 FALSE
, /* pc_relative */
814 complain_overflow_dont
, /* complain_on_overflow */
815 ppc64_elf_ha_reloc
, /* special_function */
816 "R_PPC64_ADDR16_HIGHERA", /* name */
817 FALSE
, /* partial_inplace */
819 0xffff, /* dst_mask */
820 FALSE
), /* pcrel_offset */
822 /* The bits 48-63 of an address. */
823 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
825 1, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 bfd_elf_generic_reloc
, /* special_function */
831 "R_PPC64_ADDR16_HIGHEST", /* name */
832 FALSE
, /* partial_inplace */
834 0xffff, /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* The bits 48-63 of an address, plus 1 if the contents of the low
838 16 bits, treated as a signed number, is negative. */
839 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
841 1, /* size (0 = byte, 1 = short, 2 = long) */
843 FALSE
, /* pc_relative */
845 complain_overflow_dont
, /* complain_on_overflow */
846 ppc64_elf_ha_reloc
, /* special_function */
847 "R_PPC64_ADDR16_HIGHESTA", /* name */
848 FALSE
, /* partial_inplace */
850 0xffff, /* dst_mask */
851 FALSE
), /* pcrel_offset */
853 /* Like ADDR64, but may be unaligned. */
854 HOWTO (R_PPC64_UADDR64
, /* type */
856 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
858 FALSE
, /* pc_relative */
860 complain_overflow_dont
, /* complain_on_overflow */
861 bfd_elf_generic_reloc
, /* special_function */
862 "R_PPC64_UADDR64", /* name */
863 FALSE
, /* partial_inplace */
865 ONES (64), /* dst_mask */
866 FALSE
), /* pcrel_offset */
868 /* 64-bit relative relocation. */
869 HOWTO (R_PPC64_REL64
, /* type */
871 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
873 TRUE
, /* pc_relative */
875 complain_overflow_dont
, /* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_PPC64_REL64", /* name */
878 FALSE
, /* partial_inplace */
880 ONES (64), /* dst_mask */
881 TRUE
), /* pcrel_offset */
883 /* 64-bit relocation to the symbol's procedure linkage table. */
884 HOWTO (R_PPC64_PLT64
, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 FALSE
, /* pc_relative */
890 complain_overflow_dont
, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc
, /* special_function */
892 "R_PPC64_PLT64", /* name */
893 FALSE
, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 FALSE
), /* pcrel_offset */
898 /* 64-bit PC relative relocation to the symbol's procedure linkage
900 /* FIXME: R_PPC64_PLTREL64 not supported. */
901 HOWTO (R_PPC64_PLTREL64
, /* type */
903 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
905 TRUE
, /* pc_relative */
907 complain_overflow_dont
, /* complain_on_overflow */
908 ppc64_elf_unhandled_reloc
, /* special_function */
909 "R_PPC64_PLTREL64", /* name */
910 FALSE
, /* partial_inplace */
912 ONES (64), /* dst_mask */
913 TRUE
), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation. */
917 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
918 HOWTO (R_PPC64_TOC16
, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_signed
, /* complain_on_overflow */
925 ppc64_elf_toc_reloc
, /* special_function */
926 "R_PPC64_TOC16", /* name */
927 FALSE
, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation without overflow. */
934 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_LO
, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 ppc64_elf_toc_reloc
, /* special_function */
943 "R_PPC64_TOC16_LO", /* name */
944 FALSE
, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits. */
951 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
952 HOWTO (R_PPC64_TOC16_HI
, /* type */
954 1, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE
, /* pc_relative */
958 complain_overflow_dont
, /* complain_on_overflow */
959 ppc64_elf_toc_reloc
, /* special_function */
960 "R_PPC64_TOC16_HI", /* name */
961 FALSE
, /* partial_inplace */
963 0xffff, /* dst_mask */
964 FALSE
), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
967 contents of the low 16 bits, treated as a signed number, is
970 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_HA
, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_dont
, /* complain_on_overflow */
978 ppc64_elf_toc_ha_reloc
, /* special_function */
979 "R_PPC64_TOC16_HA", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* 64-bit relocation; insert value of TOC base (.TOC.). */
987 /* R_PPC64_TOC 51 doubleword64 .TOC. */
988 HOWTO (R_PPC64_TOC
, /* type */
990 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
992 FALSE
, /* pc_relative */
994 complain_overflow_bitfield
, /* complain_on_overflow */
995 ppc64_elf_toc64_reloc
, /* special_function */
996 "R_PPC64_TOC", /* name */
997 FALSE
, /* partial_inplace */
999 ONES (64), /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* Like R_PPC64_GOT16, but also informs the link editor that the
1003 value to relocate may (!) refer to a PLT entry which the link
1004 editor (a) may replace with the symbol value. If the link editor
1005 is unable to fully resolve the symbol, it may (b) create a PLT
1006 entry and store the address to the new PLT entry in the GOT.
1007 This permits lazy resolution of function symbols at run time.
1008 The link editor may also skip all of this and just (c) emit a
1009 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1010 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1011 HOWTO (R_PPC64_PLTGOT16
, /* type */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE
, /* pc_relative */
1017 complain_overflow_signed
, /* complain_on_overflow */
1018 ppc64_elf_unhandled_reloc
, /* special_function */
1019 "R_PPC64_PLTGOT16", /* name */
1020 FALSE
, /* partial_inplace */
1022 0xffff, /* dst_mask */
1023 FALSE
), /* pcrel_offset */
1025 /* Like R_PPC64_PLTGOT16, but without overflow. */
1026 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1027 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE
, /* pc_relative */
1033 complain_overflow_dont
, /* complain_on_overflow */
1034 ppc64_elf_unhandled_reloc
, /* special_function */
1035 "R_PPC64_PLTGOT16_LO", /* name */
1036 FALSE
, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE
), /* pcrel_offset */
1041 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1042 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE
, /* pc_relative */
1049 complain_overflow_dont
, /* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc
, /* special_function */
1051 "R_PPC64_PLTGOT16_HI", /* name */
1052 FALSE
, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE
), /* pcrel_offset */
1057 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1058 1 if the contents of the low 16 bits, treated as a signed number,
1060 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1061 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1062 16, /* rightshift */
1063 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE
, /* pc_relative */
1067 complain_overflow_dont
,/* complain_on_overflow */
1068 ppc64_elf_unhandled_reloc
, /* special_function */
1069 "R_PPC64_PLTGOT16_HA", /* name */
1070 FALSE
, /* partial_inplace */
1072 0xffff, /* dst_mask */
1073 FALSE
), /* pcrel_offset */
1075 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1076 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1078 1, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE
, /* pc_relative */
1082 complain_overflow_bitfield
, /* complain_on_overflow */
1083 bfd_elf_generic_reloc
, /* special_function */
1084 "R_PPC64_ADDR16_DS", /* name */
1085 FALSE
, /* partial_inplace */
1087 0xfffc, /* dst_mask */
1088 FALSE
), /* pcrel_offset */
1090 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1091 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1093 1, /* size (0 = byte, 1 = short, 2 = long) */
1095 FALSE
, /* pc_relative */
1097 complain_overflow_dont
,/* complain_on_overflow */
1098 bfd_elf_generic_reloc
, /* special_function */
1099 "R_PPC64_ADDR16_LO_DS",/* name */
1100 FALSE
, /* partial_inplace */
1102 0xfffc, /* dst_mask */
1103 FALSE
), /* pcrel_offset */
1105 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1106 HOWTO (R_PPC64_GOT16_DS
, /* type */
1108 1, /* size (0 = byte, 1 = short, 2 = long) */
1110 FALSE
, /* pc_relative */
1112 complain_overflow_signed
, /* complain_on_overflow */
1113 ppc64_elf_unhandled_reloc
, /* special_function */
1114 "R_PPC64_GOT16_DS", /* name */
1115 FALSE
, /* partial_inplace */
1117 0xfffc, /* dst_mask */
1118 FALSE
), /* pcrel_offset */
1120 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1121 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_dont
, /* complain_on_overflow */
1128 ppc64_elf_unhandled_reloc
, /* special_function */
1129 "R_PPC64_GOT16_LO_DS", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xfffc, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1135 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1136 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE
, /* pc_relative */
1142 complain_overflow_dont
, /* complain_on_overflow */
1143 ppc64_elf_unhandled_reloc
, /* special_function */
1144 "R_PPC64_PLT16_LO_DS", /* name */
1145 FALSE
, /* partial_inplace */
1147 0xfffc, /* dst_mask */
1148 FALSE
), /* pcrel_offset */
1150 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1151 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE
, /* pc_relative */
1157 complain_overflow_bitfield
, /* complain_on_overflow */
1158 ppc64_elf_sectoff_reloc
, /* special_function */
1159 "R_PPC64_SECTOFF_DS", /* name */
1160 FALSE
, /* partial_inplace */
1162 0xfffc, /* dst_mask */
1163 FALSE
), /* pcrel_offset */
1165 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1166 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE
, /* pc_relative */
1172 complain_overflow_dont
, /* complain_on_overflow */
1173 ppc64_elf_sectoff_reloc
, /* special_function */
1174 "R_PPC64_SECTOFF_LO_DS",/* name */
1175 FALSE
, /* partial_inplace */
1177 0xfffc, /* dst_mask */
1178 FALSE
), /* pcrel_offset */
1180 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1181 HOWTO (R_PPC64_TOC16_DS
, /* type */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 FALSE
, /* pc_relative */
1187 complain_overflow_signed
, /* complain_on_overflow */
1188 ppc64_elf_toc_reloc
, /* special_function */
1189 "R_PPC64_TOC16_DS", /* name */
1190 FALSE
, /* partial_inplace */
1192 0xfffc, /* dst_mask */
1193 FALSE
), /* pcrel_offset */
1195 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1196 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1198 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 FALSE
, /* pc_relative */
1202 complain_overflow_dont
, /* complain_on_overflow */
1203 ppc64_elf_toc_reloc
, /* special_function */
1204 "R_PPC64_TOC16_LO_DS", /* name */
1205 FALSE
, /* partial_inplace */
1207 0xfffc, /* dst_mask */
1208 FALSE
), /* pcrel_offset */
1210 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1211 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1212 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_signed
, /* complain_on_overflow */
1219 ppc64_elf_unhandled_reloc
, /* special_function */
1220 "R_PPC64_PLTGOT16_DS", /* name */
1221 FALSE
, /* partial_inplace */
1223 0xfffc, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1227 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1228 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE
, /* pc_relative */
1234 complain_overflow_dont
, /* complain_on_overflow */
1235 ppc64_elf_unhandled_reloc
, /* special_function */
1236 "R_PPC64_PLTGOT16_LO_DS",/* name */
1237 FALSE
, /* partial_inplace */
1239 0xfffc, /* dst_mask */
1240 FALSE
), /* pcrel_offset */
1242 /* Marker relocs for TLS. */
1245 2, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE
, /* pc_relative */
1249 complain_overflow_dont
, /* complain_on_overflow */
1250 bfd_elf_generic_reloc
, /* special_function */
1251 "R_PPC64_TLS", /* name */
1252 FALSE
, /* partial_inplace */
1255 FALSE
), /* pcrel_offset */
1257 HOWTO (R_PPC64_TLSGD
,
1259 2, /* size (0 = byte, 1 = short, 2 = long) */
1261 FALSE
, /* pc_relative */
1263 complain_overflow_dont
, /* complain_on_overflow */
1264 bfd_elf_generic_reloc
, /* special_function */
1265 "R_PPC64_TLSGD", /* name */
1266 FALSE
, /* partial_inplace */
1269 FALSE
), /* pcrel_offset */
1271 HOWTO (R_PPC64_TLSLD
,
1273 2, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE
, /* pc_relative */
1277 complain_overflow_dont
, /* complain_on_overflow */
1278 bfd_elf_generic_reloc
, /* special_function */
1279 "R_PPC64_TLSLD", /* name */
1280 FALSE
, /* partial_inplace */
1283 FALSE
), /* pcrel_offset */
1285 HOWTO (R_PPC64_TOCSAVE
,
1287 2, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE
, /* pc_relative */
1291 complain_overflow_dont
, /* complain_on_overflow */
1292 bfd_elf_generic_reloc
, /* special_function */
1293 "R_PPC64_TOCSAVE", /* name */
1294 FALSE
, /* partial_inplace */
1297 FALSE
), /* pcrel_offset */
1299 /* Computes the load module index of the load module that contains the
1300 definition of its TLS sym. */
1301 HOWTO (R_PPC64_DTPMOD64
,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE
, /* pc_relative */
1307 complain_overflow_dont
, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc
, /* special_function */
1309 "R_PPC64_DTPMOD64", /* name */
1310 FALSE
, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE
), /* pcrel_offset */
1315 /* Computes a dtv-relative displacement, the difference between the value
1316 of sym+add and the base address of the thread-local storage block that
1317 contains the definition of sym, minus 0x8000. */
1318 HOWTO (R_PPC64_DTPREL64
,
1320 4, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_dont
, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc
, /* special_function */
1326 "R_PPC64_DTPREL64", /* name */
1327 FALSE
, /* partial_inplace */
1329 ONES (64), /* dst_mask */
1330 FALSE
), /* pcrel_offset */
1332 /* A 16 bit dtprel reloc. */
1333 HOWTO (R_PPC64_DTPREL16
,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE
, /* pc_relative */
1339 complain_overflow_signed
, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc
, /* special_function */
1341 "R_PPC64_DTPREL16", /* name */
1342 FALSE
, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE
), /* pcrel_offset */
1347 /* Like DTPREL16, but no overflow. */
1348 HOWTO (R_PPC64_DTPREL16_LO
,
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE
, /* pc_relative */
1354 complain_overflow_dont
, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc
, /* special_function */
1356 "R_PPC64_DTPREL16_LO", /* name */
1357 FALSE
, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HI
,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_dont
, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc
, /* special_function */
1371 "R_PPC64_DTPREL16_HI", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HA
,
1379 16, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE
, /* pc_relative */
1384 complain_overflow_dont
, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc
, /* special_function */
1386 "R_PPC64_DTPREL16_HA", /* name */
1387 FALSE
, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE
), /* pcrel_offset */
1392 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_dont
, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHER", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1409 32, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE
, /* pc_relative */
1414 complain_overflow_dont
, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc
, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHERA", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE
), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 FALSE
, /* pc_relative */
1429 complain_overflow_dont
, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc
, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHEST", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE
), /* pcrel_offset */
1437 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1438 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1439 48, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE
, /* pc_relative */
1444 complain_overflow_dont
, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc
, /* special_function */
1446 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1447 FALSE
, /* partial_inplace */
1449 0xffff, /* dst_mask */
1450 FALSE
), /* pcrel_offset */
1452 /* Like DTPREL16, but for insns with a DS field. */
1453 HOWTO (R_PPC64_DTPREL16_DS
,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_signed
, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC64_DTPREL16_DS", /* name */
1462 FALSE
, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* Like DTPREL16_DS, but no overflow. */
1468 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1470 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE
, /* pc_relative */
1474 complain_overflow_dont
, /* complain_on_overflow */
1475 ppc64_elf_unhandled_reloc
, /* special_function */
1476 "R_PPC64_DTPREL16_LO_DS", /* name */
1477 FALSE
, /* partial_inplace */
1479 0xfffc, /* dst_mask */
1480 FALSE
), /* pcrel_offset */
1482 /* Computes a tp-relative displacement, the difference between the value of
1483 sym+add and the value of the thread pointer (r13). */
1484 HOWTO (R_PPC64_TPREL64
,
1486 4, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_dont
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_TPREL64", /* name */
1493 FALSE
, /* partial_inplace */
1495 ONES (64), /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* A 16 bit tprel reloc. */
1499 HOWTO (R_PPC64_TPREL16
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_signed
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_TPREL16", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like TPREL16, but no overflow. */
1514 HOWTO (R_PPC64_TPREL16_LO
,
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_TPREL16_LO", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Like TPREL16_LO, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HI
,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE
, /* pc_relative */
1535 complain_overflow_dont
, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc
, /* special_function */
1537 "R_PPC64_TPREL16_HI", /* name */
1538 FALSE
, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE
), /* pcrel_offset */
1543 /* Like TPREL16_HI, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HA
,
1545 16, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE
, /* pc_relative */
1550 complain_overflow_dont
, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc
, /* special_function */
1552 "R_PPC64_TPREL16_HA", /* name */
1553 FALSE
, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE
), /* pcrel_offset */
1558 /* Like TPREL16_HI, but next higher group of 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHER
,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_dont
, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc
, /* special_function */
1567 "R_PPC64_TPREL16_HIGHER", /* name */
1568 FALSE
, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1575 32, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_dont
, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc
, /* special_function */
1582 "R_PPC64_TPREL16_HIGHERA", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE
, /* pc_relative */
1595 complain_overflow_dont
, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc
, /* special_function */
1597 "R_PPC64_TPREL16_HIGHEST", /* name */
1598 FALSE
, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1604 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1605 48, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_dont
, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc
, /* special_function */
1612 "R_PPC64_TPREL16_HIGHESTA", /* name */
1613 FALSE
, /* partial_inplace */
1615 0xffff, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 /* Like TPREL16, but for insns with a DS field. */
1619 HOWTO (R_PPC64_TPREL16_DS
,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE
, /* pc_relative */
1625 complain_overflow_signed
, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc
, /* special_function */
1627 "R_PPC64_TPREL16_DS", /* name */
1628 FALSE
, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE
), /* pcrel_offset */
1633 /* Like TPREL16_DS, but no overflow. */
1634 HOWTO (R_PPC64_TPREL16_LO_DS
,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE
, /* pc_relative */
1640 complain_overflow_dont
, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc
, /* special_function */
1642 "R_PPC64_TPREL16_LO_DS", /* name */
1643 FALSE
, /* partial_inplace */
1645 0xfffc, /* dst_mask */
1646 FALSE
), /* pcrel_offset */
1648 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1649 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1650 to the first entry relative to the TOC base (r2). */
1651 HOWTO (R_PPC64_GOT_TLSGD16
,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_signed
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_GOT_TLSGD16", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like GOT_TLSGD16, but no overflow. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE
, /* pc_relative */
1672 complain_overflow_dont
, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc
, /* special_function */
1674 "R_PPC64_GOT_TLSGD16_LO", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC64_GOT_TLSGD16_HI", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1696 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1697 16, /* rightshift */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE
, /* pc_relative */
1702 complain_overflow_dont
, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc
, /* special_function */
1704 "R_PPC64_GOT_TLSGD16_HA", /* name */
1705 FALSE
, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE
), /* pcrel_offset */
1710 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1711 with values (sym+add)@dtpmod and zero, and computes the offset to the
1712 first entry relative to the TOC base (r2). */
1713 HOWTO (R_PPC64_GOT_TLSLD16
,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE
, /* pc_relative */
1719 complain_overflow_signed
, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc
, /* special_function */
1721 "R_PPC64_GOT_TLSLD16", /* name */
1722 FALSE
, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE
), /* pcrel_offset */
1727 /* Like GOT_TLSLD16, but no overflow. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE
, /* pc_relative */
1734 complain_overflow_dont
, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc
, /* special_function */
1736 "R_PPC64_GOT_TLSLD16_LO", /* name */
1737 FALSE
, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE
, /* pc_relative */
1749 complain_overflow_dont
, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc
, /* special_function */
1751 "R_PPC64_GOT_TLSLD16_HI", /* name */
1752 FALSE
, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE
), /* pcrel_offset */
1757 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1758 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1759 16, /* rightshift */
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 FALSE
, /* pc_relative */
1764 complain_overflow_dont
, /* complain_on_overflow */
1765 ppc64_elf_unhandled_reloc
, /* special_function */
1766 "R_PPC64_GOT_TLSLD16_HA", /* name */
1767 FALSE
, /* partial_inplace */
1769 0xffff, /* dst_mask */
1770 FALSE
), /* pcrel_offset */
1772 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1773 the offset to the entry relative to the TOC base (r2). */
1774 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_signed
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_DS", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_DS, but no overflow. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE
, /* pc_relative */
1795 complain_overflow_dont
, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc
, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xfffc, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_dont
, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc
, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HI", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1819 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1820 16, /* rightshift */
1821 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 FALSE
, /* pc_relative */
1825 complain_overflow_dont
, /* complain_on_overflow */
1826 ppc64_elf_unhandled_reloc
, /* special_function */
1827 "R_PPC64_GOT_DTPREL16_HA", /* name */
1828 FALSE
, /* partial_inplace */
1830 0xffff, /* dst_mask */
1831 FALSE
), /* pcrel_offset */
1833 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1834 offset to the entry relative to the TOC base (r2). */
1835 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_signed
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_TPREL16_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_TPREL16_DS, but no overflow. */
1850 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_dont
, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc
, /* special_function */
1858 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xfffc, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE
, /* pc_relative */
1871 complain_overflow_dont
, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc
, /* special_function */
1873 "R_PPC64_GOT_TPREL16_HI", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1880 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1881 16, /* rightshift */
1882 1, /* size (0 = byte, 1 = short, 2 = long) */
1884 FALSE
, /* pc_relative */
1886 complain_overflow_dont
, /* complain_on_overflow */
1887 ppc64_elf_unhandled_reloc
, /* special_function */
1888 "R_PPC64_GOT_TPREL16_HA", /* name */
1889 FALSE
, /* partial_inplace */
1891 0xffff, /* dst_mask */
1892 FALSE
), /* pcrel_offset */
1894 HOWTO (R_PPC64_JMP_IREL
, /* type */
1896 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1898 FALSE
, /* pc_relative */
1900 complain_overflow_dont
, /* complain_on_overflow */
1901 ppc64_elf_unhandled_reloc
, /* special_function */
1902 "R_PPC64_JMP_IREL", /* name */
1903 FALSE
, /* partial_inplace */
1906 FALSE
), /* pcrel_offset */
1908 HOWTO (R_PPC64_IRELATIVE
, /* type */
1910 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1912 FALSE
, /* pc_relative */
1914 complain_overflow_dont
, /* complain_on_overflow */
1915 bfd_elf_generic_reloc
, /* special_function */
1916 "R_PPC64_IRELATIVE", /* name */
1917 FALSE
, /* partial_inplace */
1919 ONES (64), /* dst_mask */
1920 FALSE
), /* pcrel_offset */
1922 /* A 16 bit relative relocation. */
1923 HOWTO (R_PPC64_REL16
, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE
, /* pc_relative */
1929 complain_overflow_bitfield
, /* complain_on_overflow */
1930 bfd_elf_generic_reloc
, /* special_function */
1931 "R_PPC64_REL16", /* name */
1932 FALSE
, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE
), /* pcrel_offset */
1937 /* A 16 bit relative relocation without overflow. */
1938 HOWTO (R_PPC64_REL16_LO
, /* type */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1942 TRUE
, /* pc_relative */
1944 complain_overflow_dont
,/* complain_on_overflow */
1945 bfd_elf_generic_reloc
, /* special_function */
1946 "R_PPC64_REL16_LO", /* name */
1947 FALSE
, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE
), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address. */
1953 HOWTO (R_PPC64_REL16_HI
, /* type */
1954 16, /* rightshift */
1955 1, /* size (0 = byte, 1 = short, 2 = long) */
1957 TRUE
, /* pc_relative */
1959 complain_overflow_dont
, /* complain_on_overflow */
1960 bfd_elf_generic_reloc
, /* special_function */
1961 "R_PPC64_REL16_HI", /* name */
1962 FALSE
, /* partial_inplace */
1964 0xffff, /* dst_mask */
1965 TRUE
), /* pcrel_offset */
1967 /* The high order 16 bits of a relative address, plus 1 if the contents of
1968 the low 16 bits, treated as a signed number, is negative. */
1969 HOWTO (R_PPC64_REL16_HA
, /* type */
1970 16, /* rightshift */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1973 TRUE
, /* pc_relative */
1975 complain_overflow_dont
, /* complain_on_overflow */
1976 ppc64_elf_ha_reloc
, /* special_function */
1977 "R_PPC64_REL16_HA", /* name */
1978 FALSE
, /* partial_inplace */
1980 0xffff, /* dst_mask */
1981 TRUE
), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable hierarchy. */
1984 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1988 FALSE
, /* pc_relative */
1990 complain_overflow_dont
, /* complain_on_overflow */
1991 NULL
, /* special_function */
1992 "R_PPC64_GNU_VTINHERIT", /* name */
1993 FALSE
, /* partial_inplace */
1996 FALSE
), /* pcrel_offset */
1998 /* GNU extension to record C++ vtable member usage. */
1999 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2001 0, /* size (0 = byte, 1 = short, 2 = long) */
2003 FALSE
, /* pc_relative */
2005 complain_overflow_dont
, /* complain_on_overflow */
2006 NULL
, /* special_function */
2007 "R_PPC64_GNU_VTENTRY", /* name */
2008 FALSE
, /* partial_inplace */
2011 FALSE
), /* pcrel_offset */
2015 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2019 ppc_howto_init (void)
2021 unsigned int i
, type
;
2024 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2027 type
= ppc64_elf_howto_raw
[i
].type
;
2028 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2029 / sizeof (ppc64_elf_howto_table
[0])));
2030 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2034 static reloc_howto_type
*
2035 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2036 bfd_reloc_code_real_type code
)
2038 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2040 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2041 /* Initialize howto table if needed. */
2049 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2051 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2053 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2055 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2057 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2059 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2061 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2063 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2065 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2067 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2069 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2071 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2073 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2075 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2077 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2079 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2081 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2083 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2085 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2087 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2089 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2091 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2093 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2095 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2097 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2099 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2101 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2103 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2105 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2107 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2109 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2111 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2113 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2115 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2117 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2119 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2121 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2123 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2125 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2127 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2129 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2131 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2133 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2135 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2137 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2139 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2141 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2143 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2145 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2147 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2149 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2151 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2153 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2155 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2157 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2159 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2161 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2163 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2165 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2167 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2169 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2171 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2173 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2175 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2177 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2179 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2181 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2183 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2185 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2187 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2189 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2191 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2193 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2195 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2197 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2199 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2201 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2203 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2205 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2207 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2209 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2211 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2213 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2215 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2217 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2219 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2221 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2223 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2225 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2227 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2229 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2231 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2233 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2235 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2237 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2239 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2241 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2243 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2245 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2247 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2249 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2251 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2253 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2255 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2257 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2259 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2261 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2265 return ppc64_elf_howto_table
[r
];
2268 static reloc_howto_type
*
2269 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2275 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2277 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2278 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2279 return &ppc64_elf_howto_raw
[i
];
2284 /* Set the howto pointer for a PowerPC ELF reloc. */
2287 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2288 Elf_Internal_Rela
*dst
)
2292 /* Initialize howto table if needed. */
2293 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2296 type
= ELF64_R_TYPE (dst
->r_info
);
2297 if (type
>= (sizeof (ppc64_elf_howto_table
)
2298 / sizeof (ppc64_elf_howto_table
[0])))
2300 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2302 type
= R_PPC64_NONE
;
2304 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2307 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2309 static bfd_reloc_status_type
2310 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2311 void *data
, asection
*input_section
,
2312 bfd
*output_bfd
, char **error_message
)
2314 /* If this is a relocatable link (output_bfd test tells us), just
2315 call the generic function. Any adjustment will be done at final
2317 if (output_bfd
!= NULL
)
2318 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2319 input_section
, output_bfd
, error_message
);
2321 /* Adjust the addend for sign extension of the low 16 bits.
2322 We won't actually be using the low 16 bits, so trashing them
2324 reloc_entry
->addend
+= 0x8000;
2325 return bfd_reloc_continue
;
2328 static bfd_reloc_status_type
2329 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2330 void *data
, asection
*input_section
,
2331 bfd
*output_bfd
, char **error_message
)
2333 if (output_bfd
!= NULL
)
2334 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2335 input_section
, output_bfd
, error_message
);
2337 if (strcmp (symbol
->section
->name
, ".opd") == 0
2338 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2340 bfd_vma dest
= opd_entry_value (symbol
->section
,
2341 symbol
->value
+ reloc_entry
->addend
,
2343 if (dest
!= (bfd_vma
) -1)
2344 reloc_entry
->addend
= dest
- (symbol
->value
2345 + symbol
->section
->output_section
->vma
2346 + symbol
->section
->output_offset
);
2348 return bfd_reloc_continue
;
2351 static bfd_reloc_status_type
2352 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2353 void *data
, asection
*input_section
,
2354 bfd
*output_bfd
, char **error_message
)
2357 enum elf_ppc64_reloc_type r_type
;
2358 bfd_size_type octets
;
2359 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2360 bfd_boolean is_power4
= FALSE
;
2362 /* If this is a relocatable link (output_bfd test tells us), just
2363 call the generic function. Any adjustment will be done at final
2365 if (output_bfd
!= NULL
)
2366 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2367 input_section
, output_bfd
, error_message
);
2369 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2370 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2371 insn
&= ~(0x01 << 21);
2372 r_type
= reloc_entry
->howto
->type
;
2373 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2374 || r_type
== R_PPC64_REL14_BRTAKEN
)
2375 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2379 /* Set 'a' bit. This is 0b00010 in BO field for branch
2380 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2381 for branch on CTR insns (BO == 1a00t or 1a01t). */
2382 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2384 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2394 if (!bfd_is_com_section (symbol
->section
))
2395 target
= symbol
->value
;
2396 target
+= symbol
->section
->output_section
->vma
;
2397 target
+= symbol
->section
->output_offset
;
2398 target
+= reloc_entry
->addend
;
2400 from
= (reloc_entry
->address
2401 + input_section
->output_offset
2402 + input_section
->output_section
->vma
);
2404 /* Invert 'y' bit if not the default. */
2405 if ((bfd_signed_vma
) (target
- from
) < 0)
2408 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2410 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2411 input_section
, output_bfd
, error_message
);
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2416 void *data
, asection
*input_section
,
2417 bfd
*output_bfd
, char **error_message
)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd
!= NULL
)
2423 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2424 input_section
, output_bfd
, error_message
);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2428 return bfd_reloc_continue
;
2431 static bfd_reloc_status_type
2432 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2433 void *data
, asection
*input_section
,
2434 bfd
*output_bfd
, char **error_message
)
2436 /* If this is a relocatable link (output_bfd test tells us), just
2437 call the generic function. Any adjustment will be done at final
2439 if (output_bfd
!= NULL
)
2440 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2441 input_section
, output_bfd
, error_message
);
2443 /* Subtract the symbol section base address. */
2444 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2446 /* Adjust the addend for sign extension of the low 16 bits. */
2447 reloc_entry
->addend
+= 0x8000;
2448 return bfd_reloc_continue
;
2451 static bfd_reloc_status_type
2452 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2453 void *data
, asection
*input_section
,
2454 bfd
*output_bfd
, char **error_message
)
2458 /* If this is a relocatable link (output_bfd test tells us), just
2459 call the generic function. Any adjustment will be done at final
2461 if (output_bfd
!= NULL
)
2462 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2463 input_section
, output_bfd
, error_message
);
2465 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2467 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2469 /* Subtract the TOC base address. */
2470 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2471 return bfd_reloc_continue
;
2474 static bfd_reloc_status_type
2475 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2476 void *data
, asection
*input_section
,
2477 bfd
*output_bfd
, char **error_message
)
2481 /* If this is a relocatable link (output_bfd test tells us), just
2482 call the generic function. Any adjustment will be done at final
2484 if (output_bfd
!= NULL
)
2485 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2486 input_section
, output_bfd
, error_message
);
2488 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2490 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2492 /* Subtract the TOC base address. */
2493 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2495 /* Adjust the addend for sign extension of the low 16 bits. */
2496 reloc_entry
->addend
+= 0x8000;
2497 return bfd_reloc_continue
;
2500 static bfd_reloc_status_type
2501 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2502 void *data
, asection
*input_section
,
2503 bfd
*output_bfd
, char **error_message
)
2506 bfd_size_type octets
;
2508 /* If this is a relocatable link (output_bfd test tells us), just
2509 call the generic function. Any adjustment will be done at final
2511 if (output_bfd
!= NULL
)
2512 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2513 input_section
, output_bfd
, error_message
);
2515 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2517 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2519 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2520 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2521 return bfd_reloc_ok
;
2524 static bfd_reloc_status_type
2525 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2526 void *data
, asection
*input_section
,
2527 bfd
*output_bfd
, char **error_message
)
2529 /* If this is a relocatable link (output_bfd test tells us), just
2530 call the generic function. Any adjustment will be done at final
2532 if (output_bfd
!= NULL
)
2533 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2534 input_section
, output_bfd
, error_message
);
2536 if (error_message
!= NULL
)
2538 static char buf
[60];
2539 sprintf (buf
, "generic linker can't handle %s",
2540 reloc_entry
->howto
->name
);
2541 *error_message
= buf
;
2543 return bfd_reloc_dangerous
;
2546 /* Track GOT entries needed for a given symbol. We might need more
2547 than one got entry per symbol. */
2550 struct got_entry
*next
;
2552 /* The symbol addend that we'll be placing in the GOT. */
2555 /* Unlike other ELF targets, we use separate GOT entries for the same
2556 symbol referenced from different input files. This is to support
2557 automatic multiple TOC/GOT sections, where the TOC base can vary
2558 from one input file to another. After partitioning into TOC groups
2559 we merge entries within the group.
2561 Point to the BFD owning this GOT entry. */
2564 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2565 TLS_TPREL or TLS_DTPREL for tls entries. */
2566 unsigned char tls_type
;
2568 /* Non-zero if got.ent points to real entry. */
2569 unsigned char is_indirect
;
2571 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2574 bfd_signed_vma refcount
;
2576 struct got_entry
*ent
;
2580 /* The same for PLT. */
2583 struct plt_entry
*next
;
2589 bfd_signed_vma refcount
;
2594 struct ppc64_elf_obj_tdata
2596 struct elf_obj_tdata elf
;
2598 /* Shortcuts to dynamic linker sections. */
2602 /* Used during garbage collection. We attach global symbols defined
2603 on removed .opd entries to this section so that the sym is removed. */
2604 asection
*deleted_section
;
2606 /* TLS local dynamic got entry handling. Support for multiple GOT
2607 sections means we potentially need one of these for each input bfd. */
2608 struct got_entry tlsld_got
;
2610 /* A copy of relocs before they are modified for --emit-relocs. */
2611 Elf_Internal_Rela
*opd_relocs
;
2613 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2614 the reloc to be in the range -32768 to 32767. */
2615 unsigned int has_small_toc_reloc
: 1;
2617 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2618 instruction not one we handle. */
2619 unsigned int unexpected_toc_insn
: 1;
2622 #define ppc64_elf_tdata(bfd) \
2623 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2625 #define ppc64_tlsld_got(bfd) \
2626 (&ppc64_elf_tdata (bfd)->tlsld_got)
2628 #define is_ppc64_elf(bfd) \
2629 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2630 && elf_object_id (bfd) == PPC64_ELF_DATA)
2632 /* Override the generic function because we store some extras. */
2635 ppc64_elf_mkobject (bfd
*abfd
)
2637 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2641 /* Fix bad default arch selected for a 64 bit input bfd when the
2642 default is 32 bit. */
2645 ppc64_elf_object_p (bfd
*abfd
)
2647 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2649 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2651 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2653 /* Relies on arch after 32 bit default being 64 bit default. */
2654 abfd
->arch_info
= abfd
->arch_info
->next
;
2655 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2661 /* Support for core dump NOTE sections. */
2664 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2666 size_t offset
, size
;
2668 if (note
->descsz
!= 504)
2672 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2675 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2681 /* Make a ".reg/999" section. */
2682 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2683 size
, note
->descpos
+ offset
);
2687 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2689 if (note
->descsz
!= 136)
2692 elf_tdata (abfd
)->core_pid
2693 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2694 elf_tdata (abfd
)->core_program
2695 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2696 elf_tdata (abfd
)->core_command
2697 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2703 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2716 va_start (ap
, note_type
);
2717 memset (data
, 0, 40);
2718 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2719 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2721 return elfcore_write_note (abfd
, buf
, bufsiz
,
2722 "CORE", note_type
, data
, sizeof (data
));
2733 va_start (ap
, note_type
);
2734 memset (data
, 0, 112);
2735 pid
= va_arg (ap
, long);
2736 bfd_put_32 (abfd
, pid
, data
+ 32);
2737 cursig
= va_arg (ap
, int);
2738 bfd_put_16 (abfd
, cursig
, data
+ 12);
2739 greg
= va_arg (ap
, const void *);
2740 memcpy (data
+ 112, greg
, 384);
2741 memset (data
+ 496, 0, 8);
2743 return elfcore_write_note (abfd
, buf
, bufsiz
,
2744 "CORE", note_type
, data
, sizeof (data
));
2749 /* Add extra PPC sections. */
2751 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2753 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2754 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2755 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2756 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2757 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2758 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2759 { NULL
, 0, 0, 0, 0 }
2762 enum _ppc64_sec_type
{
2768 struct _ppc64_elf_section_data
2770 struct bfd_elf_section_data elf
;
2774 /* An array with one entry for each opd function descriptor. */
2775 struct _opd_sec_data
2777 /* Points to the function code section for local opd entries. */
2778 asection
**func_sec
;
2780 /* After editing .opd, adjust references to opd local syms. */
2784 /* An array for toc sections, indexed by offset/8. */
2785 struct _toc_sec_data
2787 /* Specifies the relocation symbol index used at a given toc offset. */
2790 /* And the relocation addend. */
2795 enum _ppc64_sec_type sec_type
:2;
2797 /* Flag set when small branches are detected. Used to
2798 select suitable defaults for the stub group size. */
2799 unsigned int has_14bit_branch
:1;
2802 #define ppc64_elf_section_data(sec) \
2803 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2806 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2808 if (!sec
->used_by_bfd
)
2810 struct _ppc64_elf_section_data
*sdata
;
2811 bfd_size_type amt
= sizeof (*sdata
);
2813 sdata
= bfd_zalloc (abfd
, amt
);
2816 sec
->used_by_bfd
= sdata
;
2819 return _bfd_elf_new_section_hook (abfd
, sec
);
2822 static struct _opd_sec_data
*
2823 get_opd_info (asection
* sec
)
2826 && ppc64_elf_section_data (sec
) != NULL
2827 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2828 return &ppc64_elf_section_data (sec
)->u
.opd
;
2832 /* Parameters for the qsort hook. */
2833 static bfd_boolean synthetic_relocatable
;
2835 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2838 compare_symbols (const void *ap
, const void *bp
)
2840 const asymbol
*a
= * (const asymbol
**) ap
;
2841 const asymbol
*b
= * (const asymbol
**) bp
;
2843 /* Section symbols first. */
2844 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2846 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2849 /* then .opd symbols. */
2850 if (strcmp (a
->section
->name
, ".opd") == 0
2851 && strcmp (b
->section
->name
, ".opd") != 0)
2853 if (strcmp (a
->section
->name
, ".opd") != 0
2854 && strcmp (b
->section
->name
, ".opd") == 0)
2857 /* then other code symbols. */
2858 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2859 == (SEC_CODE
| SEC_ALLOC
)
2860 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2861 != (SEC_CODE
| SEC_ALLOC
))
2864 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2865 != (SEC_CODE
| SEC_ALLOC
)
2866 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2867 == (SEC_CODE
| SEC_ALLOC
))
2870 if (synthetic_relocatable
)
2872 if (a
->section
->id
< b
->section
->id
)
2875 if (a
->section
->id
> b
->section
->id
)
2879 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2882 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2885 /* For syms with the same value, prefer strong dynamic global function
2886 syms over other syms. */
2887 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2890 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2893 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2896 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2899 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2902 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2905 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2908 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2914 /* Search SYMS for a symbol of the given VALUE. */
2917 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2925 mid
= (lo
+ hi
) >> 1;
2926 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2928 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2938 mid
= (lo
+ hi
) >> 1;
2939 if (syms
[mid
]->section
->id
< id
)
2941 else if (syms
[mid
]->section
->id
> id
)
2943 else if (syms
[mid
]->value
< value
)
2945 else if (syms
[mid
]->value
> value
)
2955 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2957 bfd_vma vma
= *(bfd_vma
*) ptr
;
2958 return ((section
->flags
& SEC_ALLOC
) != 0
2959 && section
->vma
<= vma
2960 && vma
< section
->vma
+ section
->size
);
2963 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2964 entry syms. Also generate @plt symbols for the glink branch table. */
2967 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2968 long static_count
, asymbol
**static_syms
,
2969 long dyn_count
, asymbol
**dyn_syms
,
2976 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2978 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2983 opd
= bfd_get_section_by_name (abfd
, ".opd");
2987 symcount
= static_count
;
2989 symcount
+= dyn_count
;
2993 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2997 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2999 /* Use both symbol tables. */
3000 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3001 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3003 else if (!relocatable
&& static_count
== 0)
3004 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3006 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3008 synthetic_relocatable
= relocatable
;
3009 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3011 if (!relocatable
&& symcount
> 1)
3014 /* Trim duplicate syms, since we may have merged the normal and
3015 dynamic symbols. Actually, we only care about syms that have
3016 different values, so trim any with the same value. */
3017 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3018 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3019 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3020 syms
[j
++] = syms
[i
];
3025 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3029 for (; i
< symcount
; ++i
)
3030 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3031 != (SEC_CODE
| SEC_ALLOC
))
3032 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3036 for (; i
< symcount
; ++i
)
3037 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3041 for (; i
< symcount
; ++i
)
3042 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3046 for (; i
< symcount
; ++i
)
3047 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3048 != (SEC_CODE
| SEC_ALLOC
))
3056 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3061 if (opdsymend
== secsymend
)
3064 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3065 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3069 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3076 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3080 while (r
< opd
->relocation
+ relcount
3081 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3084 if (r
== opd
->relocation
+ relcount
)
3087 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3090 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3093 sym
= *r
->sym_ptr_ptr
;
3094 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3095 sym
->section
->id
, sym
->value
+ r
->addend
))
3098 size
+= sizeof (asymbol
);
3099 size
+= strlen (syms
[i
]->name
) + 2;
3103 s
= *ret
= bfd_malloc (size
);
3110 names
= (char *) (s
+ count
);
3112 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3116 while (r
< opd
->relocation
+ relcount
3117 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3120 if (r
== opd
->relocation
+ relcount
)
3123 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3126 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3129 sym
= *r
->sym_ptr_ptr
;
3130 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3131 sym
->section
->id
, sym
->value
+ r
->addend
))
3136 s
->flags
|= BSF_SYNTHETIC
;
3137 s
->section
= sym
->section
;
3138 s
->value
= sym
->value
+ r
->addend
;
3141 len
= strlen (syms
[i
]->name
);
3142 memcpy (names
, syms
[i
]->name
, len
+ 1);
3144 /* Have udata.p point back to the original symbol this
3145 synthetic symbol was derived from. */
3146 s
->udata
.p
= syms
[i
];
3153 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3157 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3158 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3161 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3165 free_contents_and_exit
:
3173 for (i
= secsymend
; i
< opdsymend
; ++i
)
3177 /* Ignore bogus symbols. */
3178 if (syms
[i
]->value
> opd
->size
- 8)
3181 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3182 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3185 size
+= sizeof (asymbol
);
3186 size
+= strlen (syms
[i
]->name
) + 2;
3190 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3192 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3194 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3196 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3198 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3199 goto free_contents_and_exit
;
3201 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3202 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3205 extdynend
= extdyn
+ dynamic
->size
;
3206 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3208 Elf_Internal_Dyn dyn
;
3209 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3211 if (dyn
.d_tag
== DT_NULL
)
3214 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3216 /* The first glink stub starts at offset 32; see comment in
3217 ppc64_elf_finish_dynamic_sections. */
3218 glink_vma
= dyn
.d_un
.d_val
+ 32;
3219 /* The .glink section usually does not survive the final
3220 link; search for the section (usually .text) where the
3221 glink stubs now reside. */
3222 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3233 /* Determine __glink trampoline by reading the relative branch
3234 from the first glink stub. */
3236 if (bfd_get_section_contents (abfd
, glink
, buf
,
3237 glink_vma
+ 4 - glink
->vma
, 4))
3239 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3241 if ((insn
& ~0x3fffffc) == 0)
3242 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3246 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3248 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3251 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3252 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3253 goto free_contents_and_exit
;
3255 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3256 size
+= plt_count
* sizeof (asymbol
);
3258 p
= relplt
->relocation
;
3259 for (i
= 0; i
< plt_count
; i
++, p
++)
3261 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3263 size
+= sizeof ("+0x") - 1 + 16;
3268 s
= *ret
= bfd_malloc (size
);
3270 goto free_contents_and_exit
;
3272 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3274 for (i
= secsymend
; i
< opdsymend
; ++i
)
3278 if (syms
[i
]->value
> opd
->size
- 8)
3281 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3282 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3286 asection
*sec
= abfd
->sections
;
3293 long mid
= (lo
+ hi
) >> 1;
3294 if (syms
[mid
]->section
->vma
< ent
)
3296 else if (syms
[mid
]->section
->vma
> ent
)
3300 sec
= syms
[mid
]->section
;
3305 if (lo
>= hi
&& lo
> codesecsym
)
3306 sec
= syms
[lo
- 1]->section
;
3308 for (; sec
!= NULL
; sec
= sec
->next
)
3312 /* SEC_LOAD may not be set if SEC is from a separate debug
3314 if ((sec
->flags
& SEC_ALLOC
) == 0)
3316 if ((sec
->flags
& SEC_CODE
) != 0)
3319 s
->flags
|= BSF_SYNTHETIC
;
3320 s
->value
= ent
- s
->section
->vma
;
3323 len
= strlen (syms
[i
]->name
);
3324 memcpy (names
, syms
[i
]->name
, len
+ 1);
3326 /* Have udata.p point back to the original symbol this
3327 synthetic symbol was derived from. */
3328 s
->udata
.p
= syms
[i
];
3334 if (glink
!= NULL
&& relplt
!= NULL
)
3338 /* Add a symbol for the main glink trampoline. */
3339 memset (s
, 0, sizeof *s
);
3341 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3343 s
->value
= resolv_vma
- glink
->vma
;
3345 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3346 names
+= sizeof ("__glink_PLTresolve");
3351 /* FIXME: It would be very much nicer to put sym@plt on the
3352 stub rather than on the glink branch table entry. The
3353 objdump disassembler would then use a sensible symbol
3354 name on plt calls. The difficulty in doing so is
3355 a) finding the stubs, and,
3356 b) matching stubs against plt entries, and,
3357 c) there can be multiple stubs for a given plt entry.
3359 Solving (a) could be done by code scanning, but older
3360 ppc64 binaries used different stubs to current code.
3361 (b) is the tricky one since you need to known the toc
3362 pointer for at least one function that uses a pic stub to
3363 be able to calculate the plt address referenced.
3364 (c) means gdb would need to set multiple breakpoints (or
3365 find the glink branch itself) when setting breakpoints
3366 for pending shared library loads. */
3367 p
= relplt
->relocation
;
3368 for (i
= 0; i
< plt_count
; i
++, p
++)
3372 *s
= **p
->sym_ptr_ptr
;
3373 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3374 we are defining a symbol, ensure one of them is set. */
3375 if ((s
->flags
& BSF_LOCAL
) == 0)
3376 s
->flags
|= BSF_GLOBAL
;
3377 s
->flags
|= BSF_SYNTHETIC
;
3379 s
->value
= glink_vma
- glink
->vma
;
3382 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3383 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3387 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3388 names
+= sizeof ("+0x") - 1;
3389 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3390 names
+= strlen (names
);
3392 memcpy (names
, "@plt", sizeof ("@plt"));
3393 names
+= sizeof ("@plt");
3408 /* The following functions are specific to the ELF linker, while
3409 functions above are used generally. Those named ppc64_elf_* are
3410 called by the main ELF linker code. They appear in this file more
3411 or less in the order in which they are called. eg.
3412 ppc64_elf_check_relocs is called early in the link process,
3413 ppc64_elf_finish_dynamic_sections is one of the last functions
3416 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3417 functions have both a function code symbol and a function descriptor
3418 symbol. A call to foo in a relocatable object file looks like:
3425 The function definition in another object file might be:
3429 . .quad .TOC.@tocbase
3435 When the linker resolves the call during a static link, the branch
3436 unsurprisingly just goes to .foo and the .opd information is unused.
3437 If the function definition is in a shared library, things are a little
3438 different: The call goes via a plt call stub, the opd information gets
3439 copied to the plt, and the linker patches the nop.
3447 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3448 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3449 . std 2,40(1) # this is the general idea
3457 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3459 The "reloc ()" notation is supposed to indicate that the linker emits
3460 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3463 What are the difficulties here? Well, firstly, the relocations
3464 examined by the linker in check_relocs are against the function code
3465 sym .foo, while the dynamic relocation in the plt is emitted against
3466 the function descriptor symbol, foo. Somewhere along the line, we need
3467 to carefully copy dynamic link information from one symbol to the other.
3468 Secondly, the generic part of the elf linker will make .foo a dynamic
3469 symbol as is normal for most other backends. We need foo dynamic
3470 instead, at least for an application final link. However, when
3471 creating a shared library containing foo, we need to have both symbols
3472 dynamic so that references to .foo are satisfied during the early
3473 stages of linking. Otherwise the linker might decide to pull in a
3474 definition from some other object, eg. a static library.
3476 Update: As of August 2004, we support a new convention. Function
3477 calls may use the function descriptor symbol, ie. "bl foo". This
3478 behaves exactly as "bl .foo". */
3480 /* Of those relocs that might be copied as dynamic relocs, this function
3481 selects those that must be copied when linking a shared library,
3482 even when the symbol is local. */
3485 must_be_dyn_reloc (struct bfd_link_info
*info
,
3486 enum elf_ppc64_reloc_type r_type
)
3498 case R_PPC64_TPREL16
:
3499 case R_PPC64_TPREL16_LO
:
3500 case R_PPC64_TPREL16_HI
:
3501 case R_PPC64_TPREL16_HA
:
3502 case R_PPC64_TPREL16_DS
:
3503 case R_PPC64_TPREL16_LO_DS
:
3504 case R_PPC64_TPREL16_HIGHER
:
3505 case R_PPC64_TPREL16_HIGHERA
:
3506 case R_PPC64_TPREL16_HIGHEST
:
3507 case R_PPC64_TPREL16_HIGHESTA
:
3508 case R_PPC64_TPREL64
:
3509 return !info
->executable
;
3513 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3514 copying dynamic variables from a shared lib into an app's dynbss
3515 section, and instead use a dynamic relocation to point into the
3516 shared lib. With code that gcc generates, it's vital that this be
3517 enabled; In the PowerPC64 ABI, the address of a function is actually
3518 the address of a function descriptor, which resides in the .opd
3519 section. gcc uses the descriptor directly rather than going via the
3520 GOT as some other ABI's do, which means that initialized function
3521 pointers must reference the descriptor. Thus, a function pointer
3522 initialized to the address of a function in a shared library will
3523 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3524 redefines the function descriptor symbol to point to the copy. This
3525 presents a problem as a plt entry for that function is also
3526 initialized from the function descriptor symbol and the copy reloc
3527 may not be initialized first. */
3528 #define ELIMINATE_COPY_RELOCS 1
3530 /* Section name for stubs is the associated section name plus this
3532 #define STUB_SUFFIX ".stub"
3535 ppc_stub_long_branch:
3536 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3537 destination, but a 24 bit branch in a stub section will reach.
3540 ppc_stub_plt_branch:
3541 Similar to the above, but a 24 bit branch in the stub section won't
3542 reach its destination.
3543 . addis %r12,%r2,xxx@toc@ha
3544 . ld %r11,xxx@toc@l(%r12)
3549 Used to call a function in a shared library. If it so happens that
3550 the plt entry referenced crosses a 64k boundary, then an extra
3551 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3552 . addis %r12,%r2,xxx@toc@ha
3554 . ld %r11,xxx+0@toc@l(%r12)
3556 . ld %r2,xxx+8@toc@l(%r12)
3557 . ld %r11,xxx+16@toc@l(%r12)
3560 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3561 code to adjust the value and save r2 to support multiple toc sections.
3562 A ppc_stub_long_branch with an r2 offset looks like:
3564 . addis %r2,%r2,off@ha
3565 . addi %r2,%r2,off@l
3568 A ppc_stub_plt_branch with an r2 offset looks like:
3570 . addis %r12,%r2,xxx@toc@ha
3571 . ld %r11,xxx@toc@l(%r12)
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3577 In cases where the "addis" instruction would add zero, the "addis" is
3578 omitted and following instructions modified slightly in some cases.
3581 enum ppc_stub_type
{
3583 ppc_stub_long_branch
,
3584 ppc_stub_long_branch_r2off
,
3585 ppc_stub_plt_branch
,
3586 ppc_stub_plt_branch_r2off
,
3590 struct ppc_stub_hash_entry
{
3592 /* Base hash table entry structure. */
3593 struct bfd_hash_entry root
;
3595 enum ppc_stub_type stub_type
;
3597 /* The stub section. */
3600 /* Offset within stub_sec of the beginning of this stub. */
3601 bfd_vma stub_offset
;
3603 /* Given the symbol's value and its section we can determine its final
3604 value when building the stubs (so the stub knows where to jump. */
3605 bfd_vma target_value
;
3606 asection
*target_section
;
3608 /* The symbol table entry, if any, that this was derived from. */
3609 struct ppc_link_hash_entry
*h
;
3610 struct plt_entry
*plt_ent
;
3612 /* And the reloc addend that this was derived from. */
3615 /* Where this stub is being called from, or, in the case of combined
3616 stub sections, the first input section in the group. */
3620 struct ppc_branch_hash_entry
{
3622 /* Base hash table entry structure. */
3623 struct bfd_hash_entry root
;
3625 /* Offset within branch lookup table. */
3626 unsigned int offset
;
3628 /* Generation marker. */
3632 struct ppc_link_hash_entry
3634 struct elf_link_hash_entry elf
;
3637 /* A pointer to the most recently used stub hash entry against this
3639 struct ppc_stub_hash_entry
*stub_cache
;
3641 /* A pointer to the next symbol starting with a '.' */
3642 struct ppc_link_hash_entry
*next_dot_sym
;
3645 /* Track dynamic relocs copied for this symbol. */
3646 struct elf_dyn_relocs
*dyn_relocs
;
3648 /* Link between function code and descriptor symbols. */
3649 struct ppc_link_hash_entry
*oh
;
3651 /* Flag function code and descriptor symbols. */
3652 unsigned int is_func
:1;
3653 unsigned int is_func_descriptor
:1;
3654 unsigned int fake
:1;
3656 /* Whether global opd/toc sym has been adjusted or not.
3657 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3658 should be set for all globals defined in any opd/toc section. */
3659 unsigned int adjust_done
:1;
3661 /* Set if we twiddled this symbol to weak at some stage. */
3662 unsigned int was_undefined
:1;
3664 /* Contexts in which symbol is used in the GOT (or TOC).
3665 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3666 corresponding relocs are encountered during check_relocs.
3667 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3668 indicate the corresponding GOT entry type is not needed.
3669 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3670 a TPREL one. We use a separate flag rather than setting TPREL
3671 just for convenience in distinguishing the two cases. */
3672 #define TLS_GD 1 /* GD reloc. */
3673 #define TLS_LD 2 /* LD reloc. */
3674 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3675 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3676 #define TLS_TLS 16 /* Any TLS reloc. */
3677 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3678 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3679 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3680 unsigned char tls_mask
;
3683 /* ppc64 ELF linker hash table. */
3685 struct ppc_link_hash_table
3687 struct elf_link_hash_table elf
;
3689 /* The stub hash table. */
3690 struct bfd_hash_table stub_hash_table
;
3692 /* Another hash table for plt_branch stubs. */
3693 struct bfd_hash_table branch_hash_table
;
3695 /* Hash table for function prologue tocsave. */
3696 htab_t tocsave_htab
;
3698 /* Linker stub bfd. */
3701 /* Linker call-backs. */
3702 asection
* (*add_stub_section
) (const char *, asection
*);
3703 void (*layout_sections_again
) (void);
3705 /* Array to keep track of which stub sections have been created, and
3706 information on stub grouping. */
3708 /* This is the section to which stubs in the group will be attached. */
3710 /* The stub section. */
3712 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3716 /* Temp used when calculating TOC pointers. */
3719 asection
*toc_first_sec
;
3721 /* Highest input section id. */
3724 /* Highest output section index. */
3727 /* Used when adding symbols. */
3728 struct ppc_link_hash_entry
*dot_syms
;
3730 /* List of input sections for each output section. */
3731 asection
**input_list
;
3733 /* Short-cuts to get to dynamic linker sections. */
3745 asection
*glink_eh_frame
;
3747 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3748 struct ppc_link_hash_entry
*tls_get_addr
;
3749 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3751 /* The size of reliplt used by got entry relocs. */
3752 bfd_size_type got_reli_size
;
3755 unsigned long stub_count
[ppc_stub_plt_call
];
3757 /* Number of stubs against global syms. */
3758 unsigned long stub_globals
;
3760 /* Set if PLT call stubs should load r11. */
3761 unsigned int plt_static_chain
:1;
3763 /* Set if we should emit symbols for stubs. */
3764 unsigned int emit_stub_syms
:1;
3766 /* Set if __tls_get_addr optimization should not be done. */
3767 unsigned int no_tls_get_addr_opt
:1;
3769 /* Support for multiple toc sections. */
3770 unsigned int do_multi_toc
:1;
3771 unsigned int multi_toc_needed
:1;
3772 unsigned int second_toc_pass
:1;
3773 unsigned int do_toc_opt
:1;
3776 unsigned int stub_error
:1;
3778 /* Temp used by ppc64_elf_process_dot_syms. */
3779 unsigned int twiddled_syms
:1;
3781 /* Incremented every time we size stubs. */
3782 unsigned int stub_iteration
;
3784 /* Small local sym cache. */
3785 struct sym_cache sym_cache
;
3788 /* Rename some of the generic section flags to better document how they
3791 /* Nonzero if this section has TLS related relocations. */
3792 #define has_tls_reloc sec_flg0
3794 /* Nonzero if this section has a call to __tls_get_addr. */
3795 #define has_tls_get_addr_call sec_flg1
3797 /* Nonzero if this section has any toc or got relocs. */
3798 #define has_toc_reloc sec_flg2
3800 /* Nonzero if this section has a call to another section that uses
3802 #define makes_toc_func_call sec_flg3
3804 /* Recursion protection when determining above flag. */
3805 #define call_check_in_progress sec_flg4
3806 #define call_check_done sec_flg5
3808 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3810 #define ppc_hash_table(p) \
3811 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3812 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3814 #define ppc_stub_hash_lookup(table, string, create, copy) \
3815 ((struct ppc_stub_hash_entry *) \
3816 bfd_hash_lookup ((table), (string), (create), (copy)))
3818 #define ppc_branch_hash_lookup(table, string, create, copy) \
3819 ((struct ppc_branch_hash_entry *) \
3820 bfd_hash_lookup ((table), (string), (create), (copy)))
3822 /* Create an entry in the stub hash table. */
3824 static struct bfd_hash_entry
*
3825 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3826 struct bfd_hash_table
*table
,
3829 /* Allocate the structure if it has not already been allocated by a
3833 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3838 /* Call the allocation method of the superclass. */
3839 entry
= bfd_hash_newfunc (entry
, table
, string
);
3842 struct ppc_stub_hash_entry
*eh
;
3844 /* Initialize the local fields. */
3845 eh
= (struct ppc_stub_hash_entry
*) entry
;
3846 eh
->stub_type
= ppc_stub_none
;
3847 eh
->stub_sec
= NULL
;
3848 eh
->stub_offset
= 0;
3849 eh
->target_value
= 0;
3850 eh
->target_section
= NULL
;
3858 /* Create an entry in the branch hash table. */
3860 static struct bfd_hash_entry
*
3861 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3862 struct bfd_hash_table
*table
,
3865 /* Allocate the structure if it has not already been allocated by a
3869 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3874 /* Call the allocation method of the superclass. */
3875 entry
= bfd_hash_newfunc (entry
, table
, string
);
3878 struct ppc_branch_hash_entry
*eh
;
3880 /* Initialize the local fields. */
3881 eh
= (struct ppc_branch_hash_entry
*) entry
;
3889 /* Create an entry in a ppc64 ELF linker hash table. */
3891 static struct bfd_hash_entry
*
3892 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3893 struct bfd_hash_table
*table
,
3896 /* Allocate the structure if it has not already been allocated by a
3900 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3905 /* Call the allocation method of the superclass. */
3906 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3909 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3911 memset (&eh
->u
.stub_cache
, 0,
3912 (sizeof (struct ppc_link_hash_entry
)
3913 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3915 /* When making function calls, old ABI code references function entry
3916 points (dot symbols), while new ABI code references the function
3917 descriptor symbol. We need to make any combination of reference and
3918 definition work together, without breaking archive linking.
3920 For a defined function "foo" and an undefined call to "bar":
3921 An old object defines "foo" and ".foo", references ".bar" (possibly
3923 A new object defines "foo" and references "bar".
3925 A new object thus has no problem with its undefined symbols being
3926 satisfied by definitions in an old object. On the other hand, the
3927 old object won't have ".bar" satisfied by a new object.
3929 Keep a list of newly added dot-symbols. */
3931 if (string
[0] == '.')
3933 struct ppc_link_hash_table
*htab
;
3935 htab
= (struct ppc_link_hash_table
*) table
;
3936 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3937 htab
->dot_syms
= eh
;
3944 struct tocsave_entry
{
3950 tocsave_htab_hash (const void *p
)
3952 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
3953 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
3957 tocsave_htab_eq (const void *p1
, const void *p2
)
3959 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
3960 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
3961 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
3964 /* Create a ppc64 ELF linker hash table. */
3966 static struct bfd_link_hash_table
*
3967 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3969 struct ppc_link_hash_table
*htab
;
3970 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3972 htab
= bfd_zmalloc (amt
);
3976 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3977 sizeof (struct ppc_link_hash_entry
),
3984 /* Init the stub hash table too. */
3985 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3986 sizeof (struct ppc_stub_hash_entry
)))
3989 /* And the branch hash table. */
3990 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3991 sizeof (struct ppc_branch_hash_entry
)))
3994 htab
->tocsave_htab
= htab_try_create (1024,
3998 if (htab
->tocsave_htab
== NULL
)
4001 /* Initializing two fields of the union is just cosmetic. We really
4002 only care about glist, but when compiled on a 32-bit host the
4003 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4004 debugger inspection of these fields look nicer. */
4005 htab
->elf
.init_got_refcount
.refcount
= 0;
4006 htab
->elf
.init_got_refcount
.glist
= NULL
;
4007 htab
->elf
.init_plt_refcount
.refcount
= 0;
4008 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4009 htab
->elf
.init_got_offset
.offset
= 0;
4010 htab
->elf
.init_got_offset
.glist
= NULL
;
4011 htab
->elf
.init_plt_offset
.offset
= 0;
4012 htab
->elf
.init_plt_offset
.glist
= NULL
;
4014 return &htab
->elf
.root
;
4017 /* Free the derived linker hash table. */
4020 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4022 struct ppc_link_hash_table
*htab
= (struct ppc_link_hash_table
*) hash
;
4024 bfd_hash_table_free (&htab
->stub_hash_table
);
4025 bfd_hash_table_free (&htab
->branch_hash_table
);
4026 if (htab
->tocsave_htab
)
4027 htab_delete (htab
->tocsave_htab
);
4028 _bfd_generic_link_hash_table_free (hash
);
4031 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4034 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4036 struct ppc_link_hash_table
*htab
;
4038 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4040 /* Always hook our dynamic sections into the first bfd, which is the
4041 linker created stub bfd. This ensures that the GOT header is at
4042 the start of the output TOC section. */
4043 htab
= ppc_hash_table (info
);
4046 htab
->stub_bfd
= abfd
;
4047 htab
->elf
.dynobj
= abfd
;
4050 /* Build a name for an entry in the stub hash table. */
4053 ppc_stub_name (const asection
*input_section
,
4054 const asection
*sym_sec
,
4055 const struct ppc_link_hash_entry
*h
,
4056 const Elf_Internal_Rela
*rel
)
4061 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4062 offsets from a sym as a branch target? In fact, we could
4063 probably assume the addend is always zero. */
4064 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4068 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4069 stub_name
= bfd_malloc (len
);
4070 if (stub_name
== NULL
)
4073 sprintf (stub_name
, "%08x.%s+%x",
4074 input_section
->id
& 0xffffffff,
4075 h
->elf
.root
.root
.string
,
4076 (int) rel
->r_addend
& 0xffffffff);
4080 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4081 stub_name
= bfd_malloc (len
);
4082 if (stub_name
== NULL
)
4085 sprintf (stub_name
, "%08x.%x:%x+%x",
4086 input_section
->id
& 0xffffffff,
4087 sym_sec
->id
& 0xffffffff,
4088 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4089 (int) rel
->r_addend
& 0xffffffff);
4091 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4092 stub_name
[len
- 2] = 0;
4096 /* Look up an entry in the stub hash. Stub entries are cached because
4097 creating the stub name takes a bit of time. */
4099 static struct ppc_stub_hash_entry
*
4100 ppc_get_stub_entry (const asection
*input_section
,
4101 const asection
*sym_sec
,
4102 struct ppc_link_hash_entry
*h
,
4103 const Elf_Internal_Rela
*rel
,
4104 struct ppc_link_hash_table
*htab
)
4106 struct ppc_stub_hash_entry
*stub_entry
;
4107 const asection
*id_sec
;
4109 /* If this input section is part of a group of sections sharing one
4110 stub section, then use the id of the first section in the group.
4111 Stub names need to include a section id, as there may well be
4112 more than one stub used to reach say, printf, and we need to
4113 distinguish between them. */
4114 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4116 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4117 && h
->u
.stub_cache
->h
== h
4118 && h
->u
.stub_cache
->id_sec
== id_sec
)
4120 stub_entry
= h
->u
.stub_cache
;
4126 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4127 if (stub_name
== NULL
)
4130 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4131 stub_name
, FALSE
, FALSE
);
4133 h
->u
.stub_cache
= stub_entry
;
4141 /* Add a new stub entry to the stub hash. Not all fields of the new
4142 stub entry are initialised. */
4144 static struct ppc_stub_hash_entry
*
4145 ppc_add_stub (const char *stub_name
,
4147 struct bfd_link_info
*info
)
4149 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4152 struct ppc_stub_hash_entry
*stub_entry
;
4154 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4155 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4156 if (stub_sec
== NULL
)
4158 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4159 if (stub_sec
== NULL
)
4165 namelen
= strlen (link_sec
->name
);
4166 len
= namelen
+ sizeof (STUB_SUFFIX
);
4167 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4171 memcpy (s_name
, link_sec
->name
, namelen
);
4172 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4173 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4174 if (stub_sec
== NULL
)
4176 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4178 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4181 /* Enter this entry into the linker stub hash table. */
4182 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4184 if (stub_entry
== NULL
)
4186 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4187 section
->owner
, stub_name
);
4191 stub_entry
->stub_sec
= stub_sec
;
4192 stub_entry
->stub_offset
= 0;
4193 stub_entry
->id_sec
= link_sec
;
4197 /* Create sections for linker generated code. */
4200 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4202 struct ppc_link_hash_table
*htab
;
4205 htab
= ppc_hash_table (info
);
4209 /* Create .sfpr for code to save and restore fp regs. */
4210 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4211 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4212 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4214 if (htab
->sfpr
== NULL
4215 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4218 /* Create .glink for lazy dynamic linking support. */
4219 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4221 if (htab
->glink
== NULL
4222 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4225 if (!info
->no_ld_generated_unwind_info
)
4227 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4228 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4229 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4232 if (htab
->glink_eh_frame
== NULL
4233 || !bfd_set_section_alignment (abfd
, htab
->glink_eh_frame
, 2))
4237 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4238 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4239 if (htab
->iplt
== NULL
4240 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4243 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4244 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4245 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4248 if (htab
->reliplt
== NULL
4249 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4252 /* Create branch lookup table for plt_branch stubs. */
4253 flags
= (SEC_ALLOC
| SEC_LOAD
4254 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4255 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4257 if (htab
->brlt
== NULL
4258 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4264 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4265 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4266 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4269 if (htab
->relbrlt
== NULL
4270 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4276 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4277 not already done. */
4280 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4282 asection
*got
, *relgot
;
4284 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4286 if (!is_ppc64_elf (abfd
))
4293 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4296 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4301 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4302 | SEC_LINKER_CREATED
);
4304 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4306 || !bfd_set_section_alignment (abfd
, got
, 3))
4309 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4310 flags
| SEC_READONLY
);
4312 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4315 ppc64_elf_tdata (abfd
)->got
= got
;
4316 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4320 /* Create the dynamic sections, and set up shortcuts. */
4323 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4325 struct ppc_link_hash_table
*htab
;
4327 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4330 htab
= ppc_hash_table (info
);
4335 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4336 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4337 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4338 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4340 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4342 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4343 || (!info
->shared
&& !htab
->relbss
))
4349 /* Follow indirect and warning symbol links. */
4351 static inline struct bfd_link_hash_entry
*
4352 follow_link (struct bfd_link_hash_entry
*h
)
4354 while (h
->type
== bfd_link_hash_indirect
4355 || h
->type
== bfd_link_hash_warning
)
4360 static inline struct elf_link_hash_entry
*
4361 elf_follow_link (struct elf_link_hash_entry
*h
)
4363 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4366 static inline struct ppc_link_hash_entry
*
4367 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4369 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4372 /* Merge PLT info on FROM with that on TO. */
4375 move_plt_plist (struct ppc_link_hash_entry
*from
,
4376 struct ppc_link_hash_entry
*to
)
4378 if (from
->elf
.plt
.plist
!= NULL
)
4380 if (to
->elf
.plt
.plist
!= NULL
)
4382 struct plt_entry
**entp
;
4383 struct plt_entry
*ent
;
4385 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4387 struct plt_entry
*dent
;
4389 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4390 if (dent
->addend
== ent
->addend
)
4392 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4399 *entp
= to
->elf
.plt
.plist
;
4402 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4403 from
->elf
.plt
.plist
= NULL
;
4407 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4410 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4411 struct elf_link_hash_entry
*dir
,
4412 struct elf_link_hash_entry
*ind
)
4414 struct ppc_link_hash_entry
*edir
, *eind
;
4416 edir
= (struct ppc_link_hash_entry
*) dir
;
4417 eind
= (struct ppc_link_hash_entry
*) ind
;
4419 edir
->is_func
|= eind
->is_func
;
4420 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4421 edir
->tls_mask
|= eind
->tls_mask
;
4422 if (eind
->oh
!= NULL
)
4423 edir
->oh
= ppc_follow_link (eind
->oh
);
4425 /* If called to transfer flags for a weakdef during processing
4426 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4427 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4428 if (!(ELIMINATE_COPY_RELOCS
4429 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4430 && edir
->elf
.dynamic_adjusted
))
4431 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4433 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4434 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4435 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4436 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4438 /* If we were called to copy over info for a weak sym, that's all. */
4439 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4442 /* Copy over any dynamic relocs we may have on the indirect sym. */
4443 if (eind
->dyn_relocs
!= NULL
)
4445 if (edir
->dyn_relocs
!= NULL
)
4447 struct elf_dyn_relocs
**pp
;
4448 struct elf_dyn_relocs
*p
;
4450 /* Add reloc counts against the indirect sym to the direct sym
4451 list. Merge any entries against the same section. */
4452 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4454 struct elf_dyn_relocs
*q
;
4456 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4457 if (q
->sec
== p
->sec
)
4459 q
->pc_count
+= p
->pc_count
;
4460 q
->count
+= p
->count
;
4467 *pp
= edir
->dyn_relocs
;
4470 edir
->dyn_relocs
= eind
->dyn_relocs
;
4471 eind
->dyn_relocs
= NULL
;
4474 /* Copy over got entries that we may have already seen to the
4475 symbol which just became indirect. */
4476 if (eind
->elf
.got
.glist
!= NULL
)
4478 if (edir
->elf
.got
.glist
!= NULL
)
4480 struct got_entry
**entp
;
4481 struct got_entry
*ent
;
4483 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4485 struct got_entry
*dent
;
4487 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4488 if (dent
->addend
== ent
->addend
4489 && dent
->owner
== ent
->owner
4490 && dent
->tls_type
== ent
->tls_type
)
4492 dent
->got
.refcount
+= ent
->got
.refcount
;
4499 *entp
= edir
->elf
.got
.glist
;
4502 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4503 eind
->elf
.got
.glist
= NULL
;
4506 /* And plt entries. */
4507 move_plt_plist (eind
, edir
);
4509 if (eind
->elf
.dynindx
!= -1)
4511 if (edir
->elf
.dynindx
!= -1)
4512 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4513 edir
->elf
.dynstr_index
);
4514 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4515 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4516 eind
->elf
.dynindx
= -1;
4517 eind
->elf
.dynstr_index
= 0;
4521 /* Find the function descriptor hash entry from the given function code
4522 hash entry FH. Link the entries via their OH fields. */
4524 static struct ppc_link_hash_entry
*
4525 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4527 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4531 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4533 fdh
= (struct ppc_link_hash_entry
*)
4534 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4538 fdh
->is_func_descriptor
= 1;
4544 return ppc_follow_link (fdh
);
4547 /* Make a fake function descriptor sym for the code sym FH. */
4549 static struct ppc_link_hash_entry
*
4550 make_fdh (struct bfd_link_info
*info
,
4551 struct ppc_link_hash_entry
*fh
)
4555 struct bfd_link_hash_entry
*bh
;
4556 struct ppc_link_hash_entry
*fdh
;
4558 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4559 newsym
= bfd_make_empty_symbol (abfd
);
4560 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4561 newsym
->section
= bfd_und_section_ptr
;
4563 newsym
->flags
= BSF_WEAK
;
4566 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4567 newsym
->flags
, newsym
->section
,
4568 newsym
->value
, NULL
, FALSE
, FALSE
,
4572 fdh
= (struct ppc_link_hash_entry
*) bh
;
4573 fdh
->elf
.non_elf
= 0;
4575 fdh
->is_func_descriptor
= 1;
4582 /* Fix function descriptor symbols defined in .opd sections to be
4586 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4587 struct bfd_link_info
*info
,
4588 Elf_Internal_Sym
*isym
,
4589 const char **name ATTRIBUTE_UNUSED
,
4590 flagword
*flags ATTRIBUTE_UNUSED
,
4592 bfd_vma
*value ATTRIBUTE_UNUSED
)
4594 if ((ibfd
->flags
& DYNAMIC
) == 0
4595 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4596 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4598 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4600 if ((ibfd
->flags
& DYNAMIC
) == 0)
4601 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4603 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4605 else if (*sec
!= NULL
4606 && strcmp ((*sec
)->name
, ".opd") == 0)
4607 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4612 /* This function makes an old ABI object reference to ".bar" cause the
4613 inclusion of a new ABI object archive that defines "bar".
4614 NAME is a symbol defined in an archive. Return a symbol in the hash
4615 table that might be satisfied by the archive symbols. */
4617 static struct elf_link_hash_entry
*
4618 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4619 struct bfd_link_info
*info
,
4622 struct elf_link_hash_entry
*h
;
4626 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4628 /* Don't return this sym if it is a fake function descriptor
4629 created by add_symbol_adjust. */
4630 && !(h
->root
.type
== bfd_link_hash_undefweak
4631 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4637 len
= strlen (name
);
4638 dot_name
= bfd_alloc (abfd
, len
+ 2);
4639 if (dot_name
== NULL
)
4640 return (struct elf_link_hash_entry
*) 0 - 1;
4642 memcpy (dot_name
+ 1, name
, len
+ 1);
4643 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4644 bfd_release (abfd
, dot_name
);
4648 /* This function satisfies all old ABI object references to ".bar" if a
4649 new ABI object defines "bar". Well, at least, undefined dot symbols
4650 are made weak. This stops later archive searches from including an
4651 object if we already have a function descriptor definition. It also
4652 prevents the linker complaining about undefined symbols.
4653 We also check and correct mismatched symbol visibility here. The
4654 most restrictive visibility of the function descriptor and the
4655 function entry symbol is used. */
4658 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4660 struct ppc_link_hash_table
*htab
;
4661 struct ppc_link_hash_entry
*fdh
;
4663 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4666 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4667 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4669 if (eh
->elf
.root
.root
.string
[0] != '.')
4672 htab
= ppc_hash_table (info
);
4676 fdh
= lookup_fdh (eh
, htab
);
4679 if (!info
->relocatable
4680 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4681 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4682 && eh
->elf
.ref_regular
)
4684 /* Make an undefweak function descriptor sym, which is enough to
4685 pull in an --as-needed shared lib, but won't cause link
4686 errors. Archives are handled elsewhere. */
4687 fdh
= make_fdh (info
, eh
);
4690 fdh
->elf
.ref_regular
= 1;
4695 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4696 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4697 if (entry_vis
< descr_vis
)
4698 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4699 else if (entry_vis
> descr_vis
)
4700 eh
->elf
.other
+= descr_vis
- entry_vis
;
4702 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4703 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4704 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4706 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4707 eh
->was_undefined
= 1;
4708 htab
->twiddled_syms
= 1;
4715 /* Process list of dot-symbols we made in link_hash_newfunc. */
4718 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4720 struct ppc_link_hash_table
*htab
;
4721 struct ppc_link_hash_entry
**p
, *eh
;
4723 if (!is_ppc64_elf (info
->output_bfd
))
4725 htab
= ppc_hash_table (info
);
4729 if (is_ppc64_elf (ibfd
))
4731 p
= &htab
->dot_syms
;
4732 while ((eh
= *p
) != NULL
)
4735 if (!add_symbol_adjust (eh
, info
))
4737 p
= &eh
->u
.next_dot_sym
;
4741 /* Clear the list for non-ppc64 input files. */
4742 p
= &htab
->dot_syms
;
4743 while ((eh
= *p
) != NULL
)
4746 p
= &eh
->u
.next_dot_sym
;
4749 /* We need to fix the undefs list for any syms we have twiddled to
4751 if (htab
->twiddled_syms
)
4753 bfd_link_repair_undef_list (&htab
->elf
.root
);
4754 htab
->twiddled_syms
= 0;
4759 /* Undo hash table changes when an --as-needed input file is determined
4760 not to be needed. */
4763 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4764 struct bfd_link_info
*info
)
4766 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4771 htab
->dot_syms
= NULL
;
4775 /* If --just-symbols against a final linked binary, then assume we need
4776 toc adjusting stubs when calling functions defined there. */
4779 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4781 if ((sec
->flags
& SEC_CODE
) != 0
4782 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4783 && is_ppc64_elf (sec
->owner
))
4785 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4787 && got
->size
>= elf_backend_got_header_size
4788 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4789 sec
->has_toc_reloc
= 1;
4791 _bfd_elf_link_just_syms (sec
, info
);
4794 static struct plt_entry
**
4795 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4796 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4798 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4799 struct plt_entry
**local_plt
;
4800 unsigned char *local_got_tls_masks
;
4802 if (local_got_ents
== NULL
)
4804 bfd_size_type size
= symtab_hdr
->sh_info
;
4806 size
*= (sizeof (*local_got_ents
)
4807 + sizeof (*local_plt
)
4808 + sizeof (*local_got_tls_masks
));
4809 local_got_ents
= bfd_zalloc (abfd
, size
);
4810 if (local_got_ents
== NULL
)
4812 elf_local_got_ents (abfd
) = local_got_ents
;
4815 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4817 struct got_entry
*ent
;
4819 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4820 if (ent
->addend
== r_addend
4821 && ent
->owner
== abfd
4822 && ent
->tls_type
== tls_type
)
4826 bfd_size_type amt
= sizeof (*ent
);
4827 ent
= bfd_alloc (abfd
, amt
);
4830 ent
->next
= local_got_ents
[r_symndx
];
4831 ent
->addend
= r_addend
;
4833 ent
->tls_type
= tls_type
;
4834 ent
->is_indirect
= FALSE
;
4835 ent
->got
.refcount
= 0;
4836 local_got_ents
[r_symndx
] = ent
;
4838 ent
->got
.refcount
+= 1;
4841 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4842 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4843 local_got_tls_masks
[r_symndx
] |= tls_type
;
4845 return local_plt
+ r_symndx
;
4849 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4851 struct plt_entry
*ent
;
4853 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4854 if (ent
->addend
== addend
)
4858 bfd_size_type amt
= sizeof (*ent
);
4859 ent
= bfd_alloc (abfd
, amt
);
4863 ent
->addend
= addend
;
4864 ent
->plt
.refcount
= 0;
4867 ent
->plt
.refcount
+= 1;
4872 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4874 return (r_type
== R_PPC64_REL24
4875 || r_type
== R_PPC64_REL14
4876 || r_type
== R_PPC64_REL14_BRTAKEN
4877 || r_type
== R_PPC64_REL14_BRNTAKEN
4878 || r_type
== R_PPC64_ADDR24
4879 || r_type
== R_PPC64_ADDR14
4880 || r_type
== R_PPC64_ADDR14_BRTAKEN
4881 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4884 /* Look through the relocs for a section during the first phase, and
4885 calculate needed space in the global offset table, procedure
4886 linkage table, and dynamic reloc sections. */
4889 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4890 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4892 struct ppc_link_hash_table
*htab
;
4893 Elf_Internal_Shdr
*symtab_hdr
;
4894 struct elf_link_hash_entry
**sym_hashes
;
4895 const Elf_Internal_Rela
*rel
;
4896 const Elf_Internal_Rela
*rel_end
;
4898 asection
**opd_sym_map
;
4899 struct elf_link_hash_entry
*tga
, *dottga
;
4901 if (info
->relocatable
)
4904 /* Don't do anything special with non-loaded, non-alloced sections.
4905 In particular, any relocs in such sections should not affect GOT
4906 and PLT reference counting (ie. we don't allow them to create GOT
4907 or PLT entries), there's no possibility or desire to optimize TLS
4908 relocs, and there's not much point in propagating relocs to shared
4909 libs that the dynamic linker won't relocate. */
4910 if ((sec
->flags
& SEC_ALLOC
) == 0)
4913 BFD_ASSERT (is_ppc64_elf (abfd
));
4915 htab
= ppc_hash_table (info
);
4919 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4920 FALSE
, FALSE
, TRUE
);
4921 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4922 FALSE
, FALSE
, TRUE
);
4923 symtab_hdr
= &elf_symtab_hdr (abfd
);
4924 sym_hashes
= elf_sym_hashes (abfd
);
4927 if (strcmp (sec
->name
, ".opd") == 0)
4929 /* Garbage collection needs some extra help with .opd sections.
4930 We don't want to necessarily keep everything referenced by
4931 relocs in .opd, as that would keep all functions. Instead,
4932 if we reference an .opd symbol (a function descriptor), we
4933 want to keep the function code symbol's section. This is
4934 easy for global symbols, but for local syms we need to keep
4935 information about the associated function section. */
4938 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4939 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4940 if (opd_sym_map
== NULL
)
4942 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4943 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4944 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4947 if (htab
->sfpr
== NULL
4948 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4951 rel_end
= relocs
+ sec
->reloc_count
;
4952 for (rel
= relocs
; rel
< rel_end
; rel
++)
4954 unsigned long r_symndx
;
4955 struct elf_link_hash_entry
*h
;
4956 enum elf_ppc64_reloc_type r_type
;
4958 struct _ppc64_elf_section_data
*ppc64_sec
;
4959 struct plt_entry
**ifunc
;
4961 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4962 if (r_symndx
< symtab_hdr
->sh_info
)
4966 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4967 h
= elf_follow_link (h
);
4974 if (h
->type
== STT_GNU_IFUNC
)
4977 ifunc
= &h
->plt
.plist
;
4982 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4987 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4989 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4990 rel
->r_addend
, PLT_IFUNC
);
4995 r_type
= ELF64_R_TYPE (rel
->r_info
);
4996 if (is_branch_reloc (r_type
))
4998 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5001 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5002 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5003 /* We have a new-style __tls_get_addr call with a marker
5007 /* Mark this section as having an old-style call. */
5008 sec
->has_tls_get_addr_call
= 1;
5011 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5013 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5021 /* These special tls relocs tie a call to __tls_get_addr with
5022 its parameter symbol. */
5025 case R_PPC64_GOT_TLSLD16
:
5026 case R_PPC64_GOT_TLSLD16_LO
:
5027 case R_PPC64_GOT_TLSLD16_HI
:
5028 case R_PPC64_GOT_TLSLD16_HA
:
5029 tls_type
= TLS_TLS
| TLS_LD
;
5032 case R_PPC64_GOT_TLSGD16
:
5033 case R_PPC64_GOT_TLSGD16_LO
:
5034 case R_PPC64_GOT_TLSGD16_HI
:
5035 case R_PPC64_GOT_TLSGD16_HA
:
5036 tls_type
= TLS_TLS
| TLS_GD
;
5039 case R_PPC64_GOT_TPREL16_DS
:
5040 case R_PPC64_GOT_TPREL16_LO_DS
:
5041 case R_PPC64_GOT_TPREL16_HI
:
5042 case R_PPC64_GOT_TPREL16_HA
:
5043 if (!info
->executable
)
5044 info
->flags
|= DF_STATIC_TLS
;
5045 tls_type
= TLS_TLS
| TLS_TPREL
;
5048 case R_PPC64_GOT_DTPREL16_DS
:
5049 case R_PPC64_GOT_DTPREL16_LO_DS
:
5050 case R_PPC64_GOT_DTPREL16_HI
:
5051 case R_PPC64_GOT_DTPREL16_HA
:
5052 tls_type
= TLS_TLS
| TLS_DTPREL
;
5054 sec
->has_tls_reloc
= 1;
5058 case R_PPC64_GOT16_DS
:
5059 case R_PPC64_GOT16_HA
:
5060 case R_PPC64_GOT16_HI
:
5061 case R_PPC64_GOT16_LO
:
5062 case R_PPC64_GOT16_LO_DS
:
5063 /* This symbol requires a global offset table entry. */
5064 sec
->has_toc_reloc
= 1;
5065 if (r_type
== R_PPC64_GOT_TLSLD16
5066 || r_type
== R_PPC64_GOT_TLSGD16
5067 || r_type
== R_PPC64_GOT_TPREL16_DS
5068 || r_type
== R_PPC64_GOT_DTPREL16_DS
5069 || r_type
== R_PPC64_GOT16
5070 || r_type
== R_PPC64_GOT16_DS
)
5072 htab
->do_multi_toc
= 1;
5073 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5076 if (ppc64_elf_tdata (abfd
)->got
== NULL
5077 && !create_got_section (abfd
, info
))
5082 struct ppc_link_hash_entry
*eh
;
5083 struct got_entry
*ent
;
5085 eh
= (struct ppc_link_hash_entry
*) h
;
5086 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5087 if (ent
->addend
== rel
->r_addend
5088 && ent
->owner
== abfd
5089 && ent
->tls_type
== tls_type
)
5093 bfd_size_type amt
= sizeof (*ent
);
5094 ent
= bfd_alloc (abfd
, amt
);
5097 ent
->next
= eh
->elf
.got
.glist
;
5098 ent
->addend
= rel
->r_addend
;
5100 ent
->tls_type
= tls_type
;
5101 ent
->is_indirect
= FALSE
;
5102 ent
->got
.refcount
= 0;
5103 eh
->elf
.got
.glist
= ent
;
5105 ent
->got
.refcount
+= 1;
5106 eh
->tls_mask
|= tls_type
;
5109 /* This is a global offset table entry for a local symbol. */
5110 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5111 rel
->r_addend
, tls_type
))
5115 case R_PPC64_PLT16_HA
:
5116 case R_PPC64_PLT16_HI
:
5117 case R_PPC64_PLT16_LO
:
5120 /* This symbol requires a procedure linkage table entry. We
5121 actually build the entry in adjust_dynamic_symbol,
5122 because this might be a case of linking PIC code without
5123 linking in any dynamic objects, in which case we don't
5124 need to generate a procedure linkage table after all. */
5127 /* It does not make sense to have a procedure linkage
5128 table entry for a local symbol. */
5129 bfd_set_error (bfd_error_bad_value
);
5134 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5137 if (h
->root
.root
.string
[0] == '.'
5138 && h
->root
.root
.string
[1] != '\0')
5139 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5143 /* The following relocations don't need to propagate the
5144 relocation if linking a shared object since they are
5145 section relative. */
5146 case R_PPC64_SECTOFF
:
5147 case R_PPC64_SECTOFF_LO
:
5148 case R_PPC64_SECTOFF_HI
:
5149 case R_PPC64_SECTOFF_HA
:
5150 case R_PPC64_SECTOFF_DS
:
5151 case R_PPC64_SECTOFF_LO_DS
:
5152 case R_PPC64_DTPREL16
:
5153 case R_PPC64_DTPREL16_LO
:
5154 case R_PPC64_DTPREL16_HI
:
5155 case R_PPC64_DTPREL16_HA
:
5156 case R_PPC64_DTPREL16_DS
:
5157 case R_PPC64_DTPREL16_LO_DS
:
5158 case R_PPC64_DTPREL16_HIGHER
:
5159 case R_PPC64_DTPREL16_HIGHERA
:
5160 case R_PPC64_DTPREL16_HIGHEST
:
5161 case R_PPC64_DTPREL16_HIGHESTA
:
5166 case R_PPC64_REL16_LO
:
5167 case R_PPC64_REL16_HI
:
5168 case R_PPC64_REL16_HA
:
5172 case R_PPC64_TOC16_DS
:
5173 htab
->do_multi_toc
= 1;
5174 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5175 case R_PPC64_TOC16_LO
:
5176 case R_PPC64_TOC16_HI
:
5177 case R_PPC64_TOC16_HA
:
5178 case R_PPC64_TOC16_LO_DS
:
5179 sec
->has_toc_reloc
= 1;
5182 /* This relocation describes the C++ object vtable hierarchy.
5183 Reconstruct it for later use during GC. */
5184 case R_PPC64_GNU_VTINHERIT
:
5185 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5189 /* This relocation describes which C++ vtable entries are actually
5190 used. Record for later use during GC. */
5191 case R_PPC64_GNU_VTENTRY
:
5192 BFD_ASSERT (h
!= NULL
);
5194 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5199 case R_PPC64_REL14_BRTAKEN
:
5200 case R_PPC64_REL14_BRNTAKEN
:
5202 asection
*dest
= NULL
;
5204 /* Heuristic: If jumping outside our section, chances are
5205 we are going to need a stub. */
5208 /* If the sym is weak it may be overridden later, so
5209 don't assume we know where a weak sym lives. */
5210 if (h
->root
.type
== bfd_link_hash_defined
)
5211 dest
= h
->root
.u
.def
.section
;
5215 Elf_Internal_Sym
*isym
;
5217 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5222 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5226 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5231 if (h
!= NULL
&& ifunc
== NULL
)
5233 /* We may need a .plt entry if the function this reloc
5234 refers to is in a shared lib. */
5235 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5238 if (h
->root
.root
.string
[0] == '.'
5239 && h
->root
.root
.string
[1] != '\0')
5240 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5241 if (h
== tga
|| h
== dottga
)
5242 sec
->has_tls_reloc
= 1;
5246 case R_PPC64_TPREL64
:
5247 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5248 if (!info
->executable
)
5249 info
->flags
|= DF_STATIC_TLS
;
5252 case R_PPC64_DTPMOD64
:
5253 if (rel
+ 1 < rel_end
5254 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5255 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5256 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5258 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5261 case R_PPC64_DTPREL64
:
5262 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5264 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5265 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5266 /* This is the second reloc of a dtpmod, dtprel pair.
5267 Don't mark with TLS_DTPREL. */
5271 sec
->has_tls_reloc
= 1;
5274 struct ppc_link_hash_entry
*eh
;
5275 eh
= (struct ppc_link_hash_entry
*) h
;
5276 eh
->tls_mask
|= tls_type
;
5279 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5280 rel
->r_addend
, tls_type
))
5283 ppc64_sec
= ppc64_elf_section_data (sec
);
5284 if (ppc64_sec
->sec_type
!= sec_toc
)
5288 /* One extra to simplify get_tls_mask. */
5289 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5290 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5291 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5293 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5294 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5295 if (ppc64_sec
->u
.toc
.add
== NULL
)
5297 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5298 ppc64_sec
->sec_type
= sec_toc
;
5300 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5301 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5302 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5304 /* Mark the second slot of a GD or LD entry.
5305 -1 to indicate GD and -2 to indicate LD. */
5306 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5307 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5308 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5309 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5312 case R_PPC64_TPREL16
:
5313 case R_PPC64_TPREL16_LO
:
5314 case R_PPC64_TPREL16_HI
:
5315 case R_PPC64_TPREL16_HA
:
5316 case R_PPC64_TPREL16_DS
:
5317 case R_PPC64_TPREL16_LO_DS
:
5318 case R_PPC64_TPREL16_HIGHER
:
5319 case R_PPC64_TPREL16_HIGHERA
:
5320 case R_PPC64_TPREL16_HIGHEST
:
5321 case R_PPC64_TPREL16_HIGHESTA
:
5324 if (!info
->executable
)
5325 info
->flags
|= DF_STATIC_TLS
;
5330 case R_PPC64_ADDR64
:
5331 if (opd_sym_map
!= NULL
5332 && rel
+ 1 < rel_end
5333 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5337 if (h
->root
.root
.string
[0] == '.'
5338 && h
->root
.root
.string
[1] != 0
5339 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5342 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5347 Elf_Internal_Sym
*isym
;
5349 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5354 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5355 if (s
!= NULL
&& s
!= sec
)
5356 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5364 case R_PPC64_ADDR14
:
5365 case R_PPC64_ADDR14_BRNTAKEN
:
5366 case R_PPC64_ADDR14_BRTAKEN
:
5367 case R_PPC64_ADDR16
:
5368 case R_PPC64_ADDR16_DS
:
5369 case R_PPC64_ADDR16_HA
:
5370 case R_PPC64_ADDR16_HI
:
5371 case R_PPC64_ADDR16_HIGHER
:
5372 case R_PPC64_ADDR16_HIGHERA
:
5373 case R_PPC64_ADDR16_HIGHEST
:
5374 case R_PPC64_ADDR16_HIGHESTA
:
5375 case R_PPC64_ADDR16_LO
:
5376 case R_PPC64_ADDR16_LO_DS
:
5377 case R_PPC64_ADDR24
:
5378 case R_PPC64_ADDR32
:
5379 case R_PPC64_UADDR16
:
5380 case R_PPC64_UADDR32
:
5381 case R_PPC64_UADDR64
:
5383 if (h
!= NULL
&& !info
->shared
)
5384 /* We may need a copy reloc. */
5387 /* Don't propagate .opd relocs. */
5388 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5391 /* If we are creating a shared library, and this is a reloc
5392 against a global symbol, or a non PC relative reloc
5393 against a local symbol, then we need to copy the reloc
5394 into the shared library. However, if we are linking with
5395 -Bsymbolic, we do not need to copy a reloc against a
5396 global symbol which is defined in an object we are
5397 including in the link (i.e., DEF_REGULAR is set). At
5398 this point we have not seen all the input files, so it is
5399 possible that DEF_REGULAR is not set now but will be set
5400 later (it is never cleared). In case of a weak definition,
5401 DEF_REGULAR may be cleared later by a strong definition in
5402 a shared library. We account for that possibility below by
5403 storing information in the dyn_relocs field of the hash
5404 table entry. A similar situation occurs when creating
5405 shared libraries and symbol visibility changes render the
5408 If on the other hand, we are creating an executable, we
5409 may need to keep relocations for symbols satisfied by a
5410 dynamic library if we manage to avoid copy relocs for the
5414 && (must_be_dyn_reloc (info
, r_type
)
5416 && (! info
->symbolic
5417 || h
->root
.type
== bfd_link_hash_defweak
5418 || !h
->def_regular
))))
5419 || (ELIMINATE_COPY_RELOCS
5422 && (h
->root
.type
== bfd_link_hash_defweak
5423 || !h
->def_regular
))
5427 struct elf_dyn_relocs
*p
;
5428 struct elf_dyn_relocs
**head
;
5430 /* We must copy these reloc types into the output file.
5431 Create a reloc section in dynobj and make room for
5435 sreloc
= _bfd_elf_make_dynamic_reloc_section
5436 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5442 /* If this is a global symbol, we count the number of
5443 relocations we need for this symbol. */
5446 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5450 /* Track dynamic relocs needed for local syms too.
5451 We really need local syms available to do this
5455 Elf_Internal_Sym
*isym
;
5457 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5462 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5466 vpp
= &elf_section_data (s
)->local_dynrel
;
5467 head
= (struct elf_dyn_relocs
**) vpp
;
5471 if (p
== NULL
|| p
->sec
!= sec
)
5473 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5484 if (!must_be_dyn_reloc (info
, r_type
))
5497 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5498 of the code entry point, and its section. */
5501 opd_entry_value (asection
*opd_sec
,
5503 asection
**code_sec
,
5506 bfd
*opd_bfd
= opd_sec
->owner
;
5507 Elf_Internal_Rela
*relocs
;
5508 Elf_Internal_Rela
*lo
, *hi
, *look
;
5511 /* No relocs implies we are linking a --just-symbols object. */
5512 if (opd_sec
->reloc_count
== 0)
5516 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5517 return (bfd_vma
) -1;
5519 val
= bfd_get_64 (opd_bfd
, buf
);
5520 if (code_sec
!= NULL
)
5522 asection
*sec
, *likely
= NULL
;
5523 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5525 && (sec
->flags
& SEC_LOAD
) != 0
5526 && (sec
->flags
& SEC_ALLOC
) != 0)
5531 if (code_off
!= NULL
)
5532 *code_off
= val
- likely
->vma
;
5538 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5540 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5542 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5544 /* Go find the opd reloc at the sym address. */
5546 BFD_ASSERT (lo
!= NULL
);
5547 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5551 look
= lo
+ (hi
- lo
) / 2;
5552 if (look
->r_offset
< offset
)
5554 else if (look
->r_offset
> offset
)
5558 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5560 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5561 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5563 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5566 if (symndx
< symtab_hdr
->sh_info
)
5568 Elf_Internal_Sym
*sym
;
5570 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5573 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5574 symtab_hdr
->sh_info
,
5575 0, NULL
, NULL
, NULL
);
5578 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5582 val
= sym
->st_value
;
5583 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5584 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5588 struct elf_link_hash_entry
**sym_hashes
;
5589 struct elf_link_hash_entry
*rh
;
5591 sym_hashes
= elf_sym_hashes (opd_bfd
);
5592 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5593 rh
= elf_follow_link (rh
);
5594 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5595 || rh
->root
.type
== bfd_link_hash_defweak
);
5596 val
= rh
->root
.u
.def
.value
;
5597 sec
= rh
->root
.u
.def
.section
;
5599 val
+= look
->r_addend
;
5600 if (code_off
!= NULL
)
5602 if (code_sec
!= NULL
)
5604 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5605 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5614 /* Return true if symbol is defined in a regular object file. */
5617 is_static_defined (struct elf_link_hash_entry
*h
)
5619 return ((h
->root
.type
== bfd_link_hash_defined
5620 || h
->root
.type
== bfd_link_hash_defweak
)
5621 && h
->root
.u
.def
.section
!= NULL
5622 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5625 /* If FDH is a function descriptor symbol, return the associated code
5626 entry symbol if it is defined. Return NULL otherwise. */
5628 static struct ppc_link_hash_entry
*
5629 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5631 if (fdh
->is_func_descriptor
)
5633 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5634 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5635 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5641 /* If FH is a function code entry symbol, return the associated
5642 function descriptor symbol if it is defined. Return NULL otherwise. */
5644 static struct ppc_link_hash_entry
*
5645 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5648 && fh
->oh
->is_func_descriptor
)
5650 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5651 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5652 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5658 /* Mark all our entry sym sections, both opd and code section. */
5661 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5663 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5664 struct bfd_sym_chain
*sym
;
5669 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5671 struct ppc_link_hash_entry
*eh
, *fh
;
5674 eh
= (struct ppc_link_hash_entry
*)
5675 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5678 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5679 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5682 fh
= defined_code_entry (eh
);
5685 sec
= fh
->elf
.root
.u
.def
.section
;
5686 sec
->flags
|= SEC_KEEP
;
5688 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5689 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5690 eh
->elf
.root
.u
.def
.value
,
5691 &sec
, NULL
) != (bfd_vma
) -1)
5692 sec
->flags
|= SEC_KEEP
;
5694 sec
= eh
->elf
.root
.u
.def
.section
;
5695 sec
->flags
|= SEC_KEEP
;
5699 /* Mark sections containing dynamically referenced symbols. When
5700 building shared libraries, we must assume that any visible symbol is
5704 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5706 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5707 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5708 struct ppc_link_hash_entry
*fdh
;
5710 /* Dynamic linking info is on the func descriptor sym. */
5711 fdh
= defined_func_desc (eh
);
5715 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5716 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5717 && (eh
->elf
.ref_dynamic
5718 || (!info
->executable
5719 && eh
->elf
.def_regular
5720 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5721 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
5722 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
5723 || !bfd_hide_sym_by_version (info
->version_info
,
5724 eh
->elf
.root
.root
.string
)))))
5727 struct ppc_link_hash_entry
*fh
;
5729 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5731 /* Function descriptor syms cause the associated
5732 function code sym section to be marked. */
5733 fh
= defined_code_entry (eh
);
5736 code_sec
= fh
->elf
.root
.u
.def
.section
;
5737 code_sec
->flags
|= SEC_KEEP
;
5739 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5740 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5741 eh
->elf
.root
.u
.def
.value
,
5742 &code_sec
, NULL
) != (bfd_vma
) -1)
5743 code_sec
->flags
|= SEC_KEEP
;
5749 /* Return the section that should be marked against GC for a given
5753 ppc64_elf_gc_mark_hook (asection
*sec
,
5754 struct bfd_link_info
*info
,
5755 Elf_Internal_Rela
*rel
,
5756 struct elf_link_hash_entry
*h
,
5757 Elf_Internal_Sym
*sym
)
5761 /* Syms return NULL if we're marking .opd, so we avoid marking all
5762 function sections, as all functions are referenced in .opd. */
5764 if (get_opd_info (sec
) != NULL
)
5769 enum elf_ppc64_reloc_type r_type
;
5770 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5772 r_type
= ELF64_R_TYPE (rel
->r_info
);
5775 case R_PPC64_GNU_VTINHERIT
:
5776 case R_PPC64_GNU_VTENTRY
:
5780 switch (h
->root
.type
)
5782 case bfd_link_hash_defined
:
5783 case bfd_link_hash_defweak
:
5784 eh
= (struct ppc_link_hash_entry
*) h
;
5785 fdh
= defined_func_desc (eh
);
5789 /* Function descriptor syms cause the associated
5790 function code sym section to be marked. */
5791 fh
= defined_code_entry (eh
);
5794 /* They also mark their opd section. */
5795 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5797 rsec
= fh
->elf
.root
.u
.def
.section
;
5799 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5800 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5801 eh
->elf
.root
.u
.def
.value
,
5802 &rsec
, NULL
) != (bfd_vma
) -1)
5803 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5805 rsec
= h
->root
.u
.def
.section
;
5808 case bfd_link_hash_common
:
5809 rsec
= h
->root
.u
.c
.p
->section
;
5813 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5819 struct _opd_sec_data
*opd
;
5821 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5822 opd
= get_opd_info (rsec
);
5823 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5827 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5834 /* Update the .got, .plt. and dynamic reloc reference counts for the
5835 section being removed. */
5838 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5839 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5841 struct ppc_link_hash_table
*htab
;
5842 Elf_Internal_Shdr
*symtab_hdr
;
5843 struct elf_link_hash_entry
**sym_hashes
;
5844 struct got_entry
**local_got_ents
;
5845 const Elf_Internal_Rela
*rel
, *relend
;
5847 if (info
->relocatable
)
5850 if ((sec
->flags
& SEC_ALLOC
) == 0)
5853 elf_section_data (sec
)->local_dynrel
= NULL
;
5855 htab
= ppc_hash_table (info
);
5859 symtab_hdr
= &elf_symtab_hdr (abfd
);
5860 sym_hashes
= elf_sym_hashes (abfd
);
5861 local_got_ents
= elf_local_got_ents (abfd
);
5863 relend
= relocs
+ sec
->reloc_count
;
5864 for (rel
= relocs
; rel
< relend
; rel
++)
5866 unsigned long r_symndx
;
5867 enum elf_ppc64_reloc_type r_type
;
5868 struct elf_link_hash_entry
*h
= NULL
;
5869 unsigned char tls_type
= 0;
5871 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5872 r_type
= ELF64_R_TYPE (rel
->r_info
);
5873 if (r_symndx
>= symtab_hdr
->sh_info
)
5875 struct ppc_link_hash_entry
*eh
;
5876 struct elf_dyn_relocs
**pp
;
5877 struct elf_dyn_relocs
*p
;
5879 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5880 h
= elf_follow_link (h
);
5881 eh
= (struct ppc_link_hash_entry
*) h
;
5883 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5886 /* Everything must go for SEC. */
5892 if (is_branch_reloc (r_type
))
5894 struct plt_entry
**ifunc
= NULL
;
5897 if (h
->type
== STT_GNU_IFUNC
)
5898 ifunc
= &h
->plt
.plist
;
5900 else if (local_got_ents
!= NULL
)
5902 struct plt_entry
**local_plt
= (struct plt_entry
**)
5903 (local_got_ents
+ symtab_hdr
->sh_info
);
5904 unsigned char *local_got_tls_masks
= (unsigned char *)
5905 (local_plt
+ symtab_hdr
->sh_info
);
5906 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5907 ifunc
= local_plt
+ r_symndx
;
5911 struct plt_entry
*ent
;
5913 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5914 if (ent
->addend
== rel
->r_addend
)
5918 if (ent
->plt
.refcount
> 0)
5919 ent
->plt
.refcount
-= 1;
5926 case R_PPC64_GOT_TLSLD16
:
5927 case R_PPC64_GOT_TLSLD16_LO
:
5928 case R_PPC64_GOT_TLSLD16_HI
:
5929 case R_PPC64_GOT_TLSLD16_HA
:
5930 tls_type
= TLS_TLS
| TLS_LD
;
5933 case R_PPC64_GOT_TLSGD16
:
5934 case R_PPC64_GOT_TLSGD16_LO
:
5935 case R_PPC64_GOT_TLSGD16_HI
:
5936 case R_PPC64_GOT_TLSGD16_HA
:
5937 tls_type
= TLS_TLS
| TLS_GD
;
5940 case R_PPC64_GOT_TPREL16_DS
:
5941 case R_PPC64_GOT_TPREL16_LO_DS
:
5942 case R_PPC64_GOT_TPREL16_HI
:
5943 case R_PPC64_GOT_TPREL16_HA
:
5944 tls_type
= TLS_TLS
| TLS_TPREL
;
5947 case R_PPC64_GOT_DTPREL16_DS
:
5948 case R_PPC64_GOT_DTPREL16_LO_DS
:
5949 case R_PPC64_GOT_DTPREL16_HI
:
5950 case R_PPC64_GOT_DTPREL16_HA
:
5951 tls_type
= TLS_TLS
| TLS_DTPREL
;
5955 case R_PPC64_GOT16_DS
:
5956 case R_PPC64_GOT16_HA
:
5957 case R_PPC64_GOT16_HI
:
5958 case R_PPC64_GOT16_LO
:
5959 case R_PPC64_GOT16_LO_DS
:
5962 struct got_entry
*ent
;
5967 ent
= local_got_ents
[r_symndx
];
5969 for (; ent
!= NULL
; ent
= ent
->next
)
5970 if (ent
->addend
== rel
->r_addend
5971 && ent
->owner
== abfd
5972 && ent
->tls_type
== tls_type
)
5976 if (ent
->got
.refcount
> 0)
5977 ent
->got
.refcount
-= 1;
5981 case R_PPC64_PLT16_HA
:
5982 case R_PPC64_PLT16_HI
:
5983 case R_PPC64_PLT16_LO
:
5987 case R_PPC64_REL14_BRNTAKEN
:
5988 case R_PPC64_REL14_BRTAKEN
:
5992 struct plt_entry
*ent
;
5994 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5995 if (ent
->addend
== rel
->r_addend
)
5997 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5998 ent
->plt
.refcount
-= 1;
6009 /* The maximum size of .sfpr. */
6010 #define SFPR_MAX (218*4)
6012 struct sfpr_def_parms
6014 const char name
[12];
6015 unsigned char lo
, hi
;
6016 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6017 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6020 /* Auto-generate _save*, _rest* functions in .sfpr. */
6023 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6025 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6027 size_t len
= strlen (parm
->name
);
6028 bfd_boolean writing
= FALSE
;
6034 memcpy (sym
, parm
->name
, len
);
6037 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6039 struct elf_link_hash_entry
*h
;
6041 sym
[len
+ 0] = i
/ 10 + '0';
6042 sym
[len
+ 1] = i
% 10 + '0';
6043 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6047 h
->root
.type
= bfd_link_hash_defined
;
6048 h
->root
.u
.def
.section
= htab
->sfpr
;
6049 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6052 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6054 if (htab
->sfpr
->contents
== NULL
)
6056 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6057 if (htab
->sfpr
->contents
== NULL
)
6063 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6065 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6067 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6068 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6076 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6078 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6083 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6085 p
= savegpr0 (abfd
, p
, r
);
6086 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6088 bfd_put_32 (abfd
, BLR
, p
);
6093 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6095 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6100 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6102 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6104 p
= restgpr0 (abfd
, p
, r
);
6105 bfd_put_32 (abfd
, MTLR_R0
, p
);
6109 p
= restgpr0 (abfd
, p
, 30);
6110 p
= restgpr0 (abfd
, p
, 31);
6112 bfd_put_32 (abfd
, BLR
, p
);
6117 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6119 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6124 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6126 p
= savegpr1 (abfd
, p
, r
);
6127 bfd_put_32 (abfd
, BLR
, p
);
6132 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6134 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6139 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6141 p
= restgpr1 (abfd
, p
, r
);
6142 bfd_put_32 (abfd
, BLR
, p
);
6147 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6149 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6154 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6156 p
= savefpr (abfd
, p
, r
);
6157 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6159 bfd_put_32 (abfd
, BLR
, p
);
6164 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6166 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6171 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6173 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6175 p
= restfpr (abfd
, p
, r
);
6176 bfd_put_32 (abfd
, MTLR_R0
, p
);
6180 p
= restfpr (abfd
, p
, 30);
6181 p
= restfpr (abfd
, p
, 31);
6183 bfd_put_32 (abfd
, BLR
, p
);
6188 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6190 p
= savefpr (abfd
, p
, r
);
6191 bfd_put_32 (abfd
, BLR
, p
);
6196 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6198 p
= restfpr (abfd
, p
, r
);
6199 bfd_put_32 (abfd
, BLR
, p
);
6204 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6206 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6208 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6213 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6215 p
= savevr (abfd
, p
, r
);
6216 bfd_put_32 (abfd
, BLR
, p
);
6221 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6223 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6225 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6230 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6232 p
= restvr (abfd
, p
, r
);
6233 bfd_put_32 (abfd
, BLR
, p
);
6237 /* Called via elf_link_hash_traverse to transfer dynamic linking
6238 information on function code symbol entries to their corresponding
6239 function descriptor symbol entries. */
6242 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6244 struct bfd_link_info
*info
;
6245 struct ppc_link_hash_table
*htab
;
6246 struct plt_entry
*ent
;
6247 struct ppc_link_hash_entry
*fh
;
6248 struct ppc_link_hash_entry
*fdh
;
6249 bfd_boolean force_local
;
6251 fh
= (struct ppc_link_hash_entry
*) h
;
6252 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6256 htab
= ppc_hash_table (info
);
6260 /* Resolve undefined references to dot-symbols as the value
6261 in the function descriptor, if we have one in a regular object.
6262 This is to satisfy cases like ".quad .foo". Calls to functions
6263 in dynamic objects are handled elsewhere. */
6264 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6265 && fh
->was_undefined
6266 && (fdh
= defined_func_desc (fh
)) != NULL
6267 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6268 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6269 fdh
->elf
.root
.u
.def
.value
,
6270 &fh
->elf
.root
.u
.def
.section
,
6271 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6273 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6274 fh
->elf
.forced_local
= 1;
6275 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6276 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6279 /* If this is a function code symbol, transfer dynamic linking
6280 information to the function descriptor symbol. */
6284 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6285 if (ent
->plt
.refcount
> 0)
6288 || fh
->elf
.root
.root
.string
[0] != '.'
6289 || fh
->elf
.root
.root
.string
[1] == '\0')
6292 /* Find the corresponding function descriptor symbol. Create it
6293 as undefined if necessary. */
6295 fdh
= lookup_fdh (fh
, htab
);
6297 && !info
->executable
6298 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6299 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6301 fdh
= make_fdh (info
, fh
);
6306 /* Fake function descriptors are made undefweak. If the function
6307 code symbol is strong undefined, make the fake sym the same.
6308 If the function code symbol is defined, then force the fake
6309 descriptor local; We can't support overriding of symbols in a
6310 shared library on a fake descriptor. */
6314 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6316 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6318 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6319 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6321 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6322 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6324 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6329 && !fdh
->elf
.forced_local
6330 && (!info
->executable
6331 || fdh
->elf
.def_dynamic
6332 || fdh
->elf
.ref_dynamic
6333 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6334 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6336 if (fdh
->elf
.dynindx
== -1)
6337 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6339 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6340 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6341 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6342 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6343 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6345 move_plt_plist (fh
, fdh
);
6346 fdh
->elf
.needs_plt
= 1;
6348 fdh
->is_func_descriptor
= 1;
6353 /* Now that the info is on the function descriptor, clear the
6354 function code sym info. Any function code syms for which we
6355 don't have a definition in a regular file, we force local.
6356 This prevents a shared library from exporting syms that have
6357 been imported from another library. Function code syms that
6358 are really in the library we must leave global to prevent the
6359 linker dragging in a definition from a static library. */
6360 force_local
= (!fh
->elf
.def_regular
6362 || !fdh
->elf
.def_regular
6363 || fdh
->elf
.forced_local
);
6364 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6369 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6370 this hook to a) provide some gcc support functions, and b) transfer
6371 dynamic linking information gathered so far on function code symbol
6372 entries, to their corresponding function descriptor symbol entries. */
6375 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6376 struct bfd_link_info
*info
)
6378 struct ppc_link_hash_table
*htab
;
6380 const struct sfpr_def_parms funcs
[] =
6382 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6383 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6384 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6385 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6386 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6387 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6388 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6389 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6390 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6391 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6392 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6393 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6396 htab
= ppc_hash_table (info
);
6400 if (htab
->sfpr
== NULL
)
6401 /* We don't have any relocs. */
6404 /* Provide any missing _save* and _rest* functions. */
6405 htab
->sfpr
->size
= 0;
6406 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6407 if (!sfpr_define (info
, &funcs
[i
]))
6410 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6412 if (htab
->sfpr
->size
== 0)
6413 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6418 /* Adjust a symbol defined by a dynamic object and referenced by a
6419 regular object. The current definition is in some section of the
6420 dynamic object, but we're not including those sections. We have to
6421 change the definition to something the rest of the link can
6425 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6426 struct elf_link_hash_entry
*h
)
6428 struct ppc_link_hash_table
*htab
;
6431 htab
= ppc_hash_table (info
);
6435 /* Deal with function syms. */
6436 if (h
->type
== STT_FUNC
6437 || h
->type
== STT_GNU_IFUNC
6440 /* Clear procedure linkage table information for any symbol that
6441 won't need a .plt entry. */
6442 struct plt_entry
*ent
;
6443 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6444 if (ent
->plt
.refcount
> 0)
6447 || (h
->type
!= STT_GNU_IFUNC
6448 && (SYMBOL_CALLS_LOCAL (info
, h
)
6449 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6450 && h
->root
.type
== bfd_link_hash_undefweak
))))
6452 h
->plt
.plist
= NULL
;
6457 h
->plt
.plist
= NULL
;
6459 /* If this is a weak symbol, and there is a real definition, the
6460 processor independent code will have arranged for us to see the
6461 real definition first, and we can just use the same value. */
6462 if (h
->u
.weakdef
!= NULL
)
6464 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6465 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6466 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6467 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6468 if (ELIMINATE_COPY_RELOCS
)
6469 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6473 /* If we are creating a shared library, we must presume that the
6474 only references to the symbol are via the global offset table.
6475 For such cases we need not do anything here; the relocations will
6476 be handled correctly by relocate_section. */
6480 /* If there are no references to this symbol that do not use the
6481 GOT, we don't need to generate a copy reloc. */
6482 if (!h
->non_got_ref
)
6485 /* Don't generate a copy reloc for symbols defined in the executable. */
6486 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6489 if (ELIMINATE_COPY_RELOCS
)
6491 struct ppc_link_hash_entry
* eh
;
6492 struct elf_dyn_relocs
*p
;
6494 eh
= (struct ppc_link_hash_entry
*) h
;
6495 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6497 s
= p
->sec
->output_section
;
6498 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6502 /* If we didn't find any dynamic relocs in read-only sections, then
6503 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6511 if (h
->plt
.plist
!= NULL
)
6513 /* We should never get here, but unfortunately there are versions
6514 of gcc out there that improperly (for this ABI) put initialized
6515 function pointers, vtable refs and suchlike in read-only
6516 sections. Allow them to proceed, but warn that this might
6517 break at runtime. */
6518 info
->callbacks
->einfo
6519 (_("%P: copy reloc against `%s' requires lazy plt linking; "
6520 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6521 h
->root
.root
.string
);
6524 /* This is a reference to a symbol defined by a dynamic object which
6525 is not a function. */
6529 info
->callbacks
->einfo (_("%P: dynamic variable `%s' is zero size\n"),
6530 h
->root
.root
.string
);
6534 /* We must allocate the symbol in our .dynbss section, which will
6535 become part of the .bss section of the executable. There will be
6536 an entry for this symbol in the .dynsym section. The dynamic
6537 object will contain position independent code, so all references
6538 from the dynamic object to this symbol will go through the global
6539 offset table. The dynamic linker will use the .dynsym entry to
6540 determine the address it must put in the global offset table, so
6541 both the dynamic object and the regular object will refer to the
6542 same memory location for the variable. */
6544 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6545 to copy the initial value out of the dynamic object and into the
6546 runtime process image. We need to remember the offset into the
6547 .rela.bss section we are going to use. */
6548 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6550 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6556 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6559 /* If given a function descriptor symbol, hide both the function code
6560 sym and the descriptor. */
6562 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6563 struct elf_link_hash_entry
*h
,
6564 bfd_boolean force_local
)
6566 struct ppc_link_hash_entry
*eh
;
6567 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6569 eh
= (struct ppc_link_hash_entry
*) h
;
6570 if (eh
->is_func_descriptor
)
6572 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6577 struct ppc_link_hash_table
*htab
;
6580 /* We aren't supposed to use alloca in BFD because on
6581 systems which do not have alloca the version in libiberty
6582 calls xmalloc, which might cause the program to crash
6583 when it runs out of memory. This function doesn't have a
6584 return status, so there's no way to gracefully return an
6585 error. So cheat. We know that string[-1] can be safely
6586 accessed; It's either a string in an ELF string table,
6587 or allocated in an objalloc structure. */
6589 p
= eh
->elf
.root
.root
.string
- 1;
6592 htab
= ppc_hash_table (info
);
6596 fh
= (struct ppc_link_hash_entry
*)
6597 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6600 /* Unfortunately, if it so happens that the string we were
6601 looking for was allocated immediately before this string,
6602 then we overwrote the string terminator. That's the only
6603 reason the lookup should fail. */
6606 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6607 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6609 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6610 fh
= (struct ppc_link_hash_entry
*)
6611 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6620 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6625 get_sym_h (struct elf_link_hash_entry
**hp
,
6626 Elf_Internal_Sym
**symp
,
6628 unsigned char **tls_maskp
,
6629 Elf_Internal_Sym
**locsymsp
,
6630 unsigned long r_symndx
,
6633 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6635 if (r_symndx
>= symtab_hdr
->sh_info
)
6637 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6638 struct elf_link_hash_entry
*h
;
6640 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6641 h
= elf_follow_link (h
);
6649 if (symsecp
!= NULL
)
6651 asection
*symsec
= NULL
;
6652 if (h
->root
.type
== bfd_link_hash_defined
6653 || h
->root
.type
== bfd_link_hash_defweak
)
6654 symsec
= h
->root
.u
.def
.section
;
6658 if (tls_maskp
!= NULL
)
6660 struct ppc_link_hash_entry
*eh
;
6662 eh
= (struct ppc_link_hash_entry
*) h
;
6663 *tls_maskp
= &eh
->tls_mask
;
6668 Elf_Internal_Sym
*sym
;
6669 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6671 if (locsyms
== NULL
)
6673 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6674 if (locsyms
== NULL
)
6675 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6676 symtab_hdr
->sh_info
,
6677 0, NULL
, NULL
, NULL
);
6678 if (locsyms
== NULL
)
6680 *locsymsp
= locsyms
;
6682 sym
= locsyms
+ r_symndx
;
6690 if (symsecp
!= NULL
)
6691 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6693 if (tls_maskp
!= NULL
)
6695 struct got_entry
**lgot_ents
;
6696 unsigned char *tls_mask
;
6699 lgot_ents
= elf_local_got_ents (ibfd
);
6700 if (lgot_ents
!= NULL
)
6702 struct plt_entry
**local_plt
= (struct plt_entry
**)
6703 (lgot_ents
+ symtab_hdr
->sh_info
);
6704 unsigned char *lgot_masks
= (unsigned char *)
6705 (local_plt
+ symtab_hdr
->sh_info
);
6706 tls_mask
= &lgot_masks
[r_symndx
];
6708 *tls_maskp
= tls_mask
;
6714 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6715 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6716 type suitable for optimization, and 1 otherwise. */
6719 get_tls_mask (unsigned char **tls_maskp
,
6720 unsigned long *toc_symndx
,
6721 bfd_vma
*toc_addend
,
6722 Elf_Internal_Sym
**locsymsp
,
6723 const Elf_Internal_Rela
*rel
,
6726 unsigned long r_symndx
;
6728 struct elf_link_hash_entry
*h
;
6729 Elf_Internal_Sym
*sym
;
6733 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6734 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6737 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6739 || ppc64_elf_section_data (sec
) == NULL
6740 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6743 /* Look inside a TOC section too. */
6746 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6747 off
= h
->root
.u
.def
.value
;
6750 off
= sym
->st_value
;
6751 off
+= rel
->r_addend
;
6752 BFD_ASSERT (off
% 8 == 0);
6753 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6754 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6755 if (toc_symndx
!= NULL
)
6756 *toc_symndx
= r_symndx
;
6757 if (toc_addend
!= NULL
)
6758 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6759 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6761 if ((h
== NULL
|| is_static_defined (h
))
6762 && (next_r
== -1 || next_r
== -2))
6767 /* Find (or create) an entry in the tocsave hash table. */
6769 static struct tocsave_entry
*
6770 tocsave_find (struct ppc_link_hash_table
*htab
,
6771 enum insert_option insert
,
6772 Elf_Internal_Sym
**local_syms
,
6773 const Elf_Internal_Rela
*irela
,
6776 unsigned long r_indx
;
6777 struct elf_link_hash_entry
*h
;
6778 Elf_Internal_Sym
*sym
;
6779 struct tocsave_entry ent
, *p
;
6781 struct tocsave_entry
**slot
;
6783 r_indx
= ELF64_R_SYM (irela
->r_info
);
6784 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
6786 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
6788 (*_bfd_error_handler
)
6789 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6794 ent
.offset
= h
->root
.u
.def
.value
;
6796 ent
.offset
= sym
->st_value
;
6797 ent
.offset
+= irela
->r_addend
;
6799 hash
= tocsave_htab_hash (&ent
);
6800 slot
= ((struct tocsave_entry
**)
6801 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
6807 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
6816 /* Adjust all global syms defined in opd sections. In gcc generated
6817 code for the old ABI, these will already have been done. */
6820 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6822 struct ppc_link_hash_entry
*eh
;
6824 struct _opd_sec_data
*opd
;
6826 if (h
->root
.type
== bfd_link_hash_indirect
)
6829 if (h
->root
.type
!= bfd_link_hash_defined
6830 && h
->root
.type
!= bfd_link_hash_defweak
)
6833 eh
= (struct ppc_link_hash_entry
*) h
;
6834 if (eh
->adjust_done
)
6837 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6838 opd
= get_opd_info (sym_sec
);
6839 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6841 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6844 /* This entry has been deleted. */
6845 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6848 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6849 if (elf_discarded_section (dsec
))
6851 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6855 eh
->elf
.root
.u
.def
.value
= 0;
6856 eh
->elf
.root
.u
.def
.section
= dsec
;
6859 eh
->elf
.root
.u
.def
.value
+= adjust
;
6860 eh
->adjust_done
= 1;
6865 /* Handles decrementing dynamic reloc counts for the reloc specified by
6866 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6867 have already been determined. */
6870 dec_dynrel_count (bfd_vma r_info
,
6872 struct bfd_link_info
*info
,
6873 Elf_Internal_Sym
**local_syms
,
6874 struct elf_link_hash_entry
*h
,
6877 enum elf_ppc64_reloc_type r_type
;
6878 struct elf_dyn_relocs
*p
;
6879 struct elf_dyn_relocs
**pp
;
6881 /* Can this reloc be dynamic? This switch, and later tests here
6882 should be kept in sync with the code in check_relocs. */
6883 r_type
= ELF64_R_TYPE (r_info
);
6889 case R_PPC64_TPREL16
:
6890 case R_PPC64_TPREL16_LO
:
6891 case R_PPC64_TPREL16_HI
:
6892 case R_PPC64_TPREL16_HA
:
6893 case R_PPC64_TPREL16_DS
:
6894 case R_PPC64_TPREL16_LO_DS
:
6895 case R_PPC64_TPREL16_HIGHER
:
6896 case R_PPC64_TPREL16_HIGHERA
:
6897 case R_PPC64_TPREL16_HIGHEST
:
6898 case R_PPC64_TPREL16_HIGHESTA
:
6902 case R_PPC64_TPREL64
:
6903 case R_PPC64_DTPMOD64
:
6904 case R_PPC64_DTPREL64
:
6905 case R_PPC64_ADDR64
:
6909 case R_PPC64_ADDR14
:
6910 case R_PPC64_ADDR14_BRNTAKEN
:
6911 case R_PPC64_ADDR14_BRTAKEN
:
6912 case R_PPC64_ADDR16
:
6913 case R_PPC64_ADDR16_DS
:
6914 case R_PPC64_ADDR16_HA
:
6915 case R_PPC64_ADDR16_HI
:
6916 case R_PPC64_ADDR16_HIGHER
:
6917 case R_PPC64_ADDR16_HIGHERA
:
6918 case R_PPC64_ADDR16_HIGHEST
:
6919 case R_PPC64_ADDR16_HIGHESTA
:
6920 case R_PPC64_ADDR16_LO
:
6921 case R_PPC64_ADDR16_LO_DS
:
6922 case R_PPC64_ADDR24
:
6923 case R_PPC64_ADDR32
:
6924 case R_PPC64_UADDR16
:
6925 case R_PPC64_UADDR32
:
6926 case R_PPC64_UADDR64
:
6931 if (local_syms
!= NULL
)
6933 unsigned long r_symndx
;
6934 Elf_Internal_Sym
*sym
;
6935 bfd
*ibfd
= sec
->owner
;
6937 r_symndx
= ELF64_R_SYM (r_info
);
6938 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6943 && (must_be_dyn_reloc (info
, r_type
)
6946 || h
->root
.type
== bfd_link_hash_defweak
6947 || !h
->def_regular
))))
6948 || (ELIMINATE_COPY_RELOCS
6951 && (h
->root
.type
== bfd_link_hash_defweak
6952 || !h
->def_regular
)))
6958 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6961 if (sym_sec
!= NULL
)
6963 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6964 pp
= (struct elf_dyn_relocs
**) vpp
;
6968 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6969 pp
= (struct elf_dyn_relocs
**) vpp
;
6972 /* elf_gc_sweep may have already removed all dyn relocs associated
6973 with local syms for a given section. Don't report a dynreloc
6979 while ((p
= *pp
) != NULL
)
6983 if (!must_be_dyn_reloc (info
, r_type
))
6993 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
6995 bfd_set_error (bfd_error_bad_value
);
6999 /* Remove unused Official Procedure Descriptor entries. Currently we
7000 only remove those associated with functions in discarded link-once
7001 sections, or weakly defined functions that have been overridden. It
7002 would be possible to remove many more entries for statically linked
7006 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
7009 bfd_boolean some_edited
= FALSE
;
7010 asection
*need_pad
= NULL
;
7012 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7015 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7016 Elf_Internal_Shdr
*symtab_hdr
;
7017 Elf_Internal_Sym
*local_syms
;
7019 struct _opd_sec_data
*opd
;
7020 bfd_boolean need_edit
, add_aux_fields
;
7021 bfd_size_type cnt_16b
= 0;
7023 if (!is_ppc64_elf (ibfd
))
7026 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7027 if (sec
== NULL
|| sec
->size
== 0)
7030 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
7033 if (sec
->output_section
== bfd_abs_section_ptr
)
7036 /* Look through the section relocs. */
7037 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7041 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7043 /* Read the relocations. */
7044 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7046 if (relstart
== NULL
)
7049 /* First run through the relocs to check they are sane, and to
7050 determine whether we need to edit this opd section. */
7054 relend
= relstart
+ sec
->reloc_count
;
7055 for (rel
= relstart
; rel
< relend
; )
7057 enum elf_ppc64_reloc_type r_type
;
7058 unsigned long r_symndx
;
7060 struct elf_link_hash_entry
*h
;
7061 Elf_Internal_Sym
*sym
;
7063 /* .opd contains a regular array of 16 or 24 byte entries. We're
7064 only interested in the reloc pointing to a function entry
7066 if (rel
->r_offset
!= offset
7067 || rel
+ 1 >= relend
7068 || (rel
+ 1)->r_offset
!= offset
+ 8)
7070 /* If someone messes with .opd alignment then after a
7071 "ld -r" we might have padding in the middle of .opd.
7072 Also, there's nothing to prevent someone putting
7073 something silly in .opd with the assembler. No .opd
7074 optimization for them! */
7076 (*_bfd_error_handler
)
7077 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7082 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7083 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7085 (*_bfd_error_handler
)
7086 (_("%B: unexpected reloc type %u in .opd section"),
7092 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7093 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7097 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7099 const char *sym_name
;
7101 sym_name
= h
->root
.root
.string
;
7103 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7106 (*_bfd_error_handler
)
7107 (_("%B: undefined sym `%s' in .opd section"),
7113 /* opd entries are always for functions defined in the
7114 current input bfd. If the symbol isn't defined in the
7115 input bfd, then we won't be using the function in this
7116 bfd; It must be defined in a linkonce section in another
7117 bfd, or is weak. It's also possible that we are
7118 discarding the function due to a linker script /DISCARD/,
7119 which we test for via the output_section. */
7120 if (sym_sec
->owner
!= ibfd
7121 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7126 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7128 if (sec
->size
== offset
+ 24)
7133 if (rel
== relend
&& sec
->size
== offset
+ 16)
7141 if (rel
->r_offset
== offset
+ 24)
7143 else if (rel
->r_offset
!= offset
+ 16)
7145 else if (rel
+ 1 < relend
7146 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7147 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7152 else if (rel
+ 2 < relend
7153 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7154 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7163 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7165 if (need_edit
|| add_aux_fields
)
7167 Elf_Internal_Rela
*write_rel
;
7168 Elf_Internal_Shdr
*rel_hdr
;
7169 bfd_byte
*rptr
, *wptr
;
7170 bfd_byte
*new_contents
;
7175 new_contents
= NULL
;
7176 amt
= sec
->size
* sizeof (long) / 8;
7177 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7178 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7179 if (opd
->adjust
== NULL
)
7181 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7183 /* This seems a waste of time as input .opd sections are all
7184 zeros as generated by gcc, but I suppose there's no reason
7185 this will always be so. We might start putting something in
7186 the third word of .opd entries. */
7187 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7190 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7195 if (local_syms
!= NULL
7196 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7198 if (elf_section_data (sec
)->relocs
!= relstart
)
7202 sec
->contents
= loc
;
7203 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7206 elf_section_data (sec
)->relocs
= relstart
;
7208 new_contents
= sec
->contents
;
7211 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7212 if (new_contents
== NULL
)
7216 wptr
= new_contents
;
7217 rptr
= sec
->contents
;
7219 write_rel
= relstart
;
7223 for (rel
= relstart
; rel
< relend
; rel
++)
7225 unsigned long r_symndx
;
7227 struct elf_link_hash_entry
*h
;
7228 Elf_Internal_Sym
*sym
;
7230 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7231 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7235 if (rel
->r_offset
== offset
)
7237 struct ppc_link_hash_entry
*fdh
= NULL
;
7239 /* See if the .opd entry is full 24 byte or
7240 16 byte (with fd_aux entry overlapped with next
7243 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7244 || (rel
+ 3 < relend
7245 && rel
[2].r_offset
== offset
+ 16
7246 && rel
[3].r_offset
== offset
+ 24
7247 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7248 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7252 && h
->root
.root
.string
[0] == '.')
7254 struct ppc_link_hash_table
*htab
;
7256 htab
= ppc_hash_table (info
);
7258 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7261 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7262 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7266 skip
= (sym_sec
->owner
!= ibfd
7267 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7270 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7272 /* Arrange for the function descriptor sym
7274 fdh
->elf
.root
.u
.def
.value
= 0;
7275 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7277 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7281 /* We'll be keeping this opd entry. */
7285 /* Redefine the function descriptor symbol to
7286 this location in the opd section. It is
7287 necessary to update the value here rather
7288 than using an array of adjustments as we do
7289 for local symbols, because various places
7290 in the generic ELF code use the value
7291 stored in u.def.value. */
7292 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7293 fdh
->adjust_done
= 1;
7296 /* Local syms are a bit tricky. We could
7297 tweak them as they can be cached, but
7298 we'd need to look through the local syms
7299 for the function descriptor sym which we
7300 don't have at the moment. So keep an
7301 array of adjustments. */
7302 opd
->adjust
[rel
->r_offset
/ 8]
7303 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7306 memcpy (wptr
, rptr
, opd_ent_size
);
7307 wptr
+= opd_ent_size
;
7308 if (add_aux_fields
&& opd_ent_size
== 16)
7310 memset (wptr
, '\0', 8);
7314 rptr
+= opd_ent_size
;
7315 offset
+= opd_ent_size
;
7321 && !info
->relocatable
7322 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7328 /* We need to adjust any reloc offsets to point to the
7329 new opd entries. While we're at it, we may as well
7330 remove redundant relocs. */
7331 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7332 if (write_rel
!= rel
)
7333 memcpy (write_rel
, rel
, sizeof (*rel
));
7338 sec
->size
= wptr
- new_contents
;
7339 sec
->reloc_count
= write_rel
- relstart
;
7342 free (sec
->contents
);
7343 sec
->contents
= new_contents
;
7346 /* Fudge the header size too, as this is used later in
7347 elf_bfd_final_link if we are emitting relocs. */
7348 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7349 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7352 else if (elf_section_data (sec
)->relocs
!= relstart
)
7355 if (local_syms
!= NULL
7356 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7358 if (!info
->keep_memory
)
7361 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7366 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7368 /* If we are doing a final link and the last .opd entry is just 16 byte
7369 long, add a 8 byte padding after it. */
7370 if (need_pad
!= NULL
&& !info
->relocatable
)
7374 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7376 BFD_ASSERT (need_pad
->size
> 0);
7378 p
= bfd_malloc (need_pad
->size
+ 8);
7382 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7383 p
, 0, need_pad
->size
))
7386 need_pad
->contents
= p
;
7387 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7391 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7395 need_pad
->contents
= p
;
7398 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7399 need_pad
->size
+= 8;
7405 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7408 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7409 int no_tls_get_addr_opt
,
7412 struct ppc_link_hash_table
*htab
;
7414 htab
= ppc_hash_table (info
);
7419 htab
->do_multi_toc
= 0;
7420 else if (!htab
->do_multi_toc
)
7423 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7424 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7425 FALSE
, FALSE
, TRUE
));
7426 /* Move dynamic linking info to the function descriptor sym. */
7427 if (htab
->tls_get_addr
!= NULL
)
7428 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7429 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7430 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7431 FALSE
, FALSE
, TRUE
));
7432 if (!no_tls_get_addr_opt
)
7434 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7436 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7437 FALSE
, FALSE
, TRUE
);
7439 func_desc_adjust (opt
, info
);
7440 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7441 FALSE
, FALSE
, TRUE
);
7443 && (opt_fd
->root
.type
== bfd_link_hash_defined
7444 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7446 /* If glibc supports an optimized __tls_get_addr call stub,
7447 signalled by the presence of __tls_get_addr_opt, and we'll
7448 be calling __tls_get_addr via a plt call stub, then
7449 make __tls_get_addr point to __tls_get_addr_opt. */
7450 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7451 if (htab
->elf
.dynamic_sections_created
7453 && (tga_fd
->type
== STT_FUNC
7454 || tga_fd
->needs_plt
)
7455 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7456 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7457 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7459 struct plt_entry
*ent
;
7461 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7462 if (ent
->plt
.refcount
> 0)
7466 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7467 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7468 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7469 if (opt_fd
->dynindx
!= -1)
7471 /* Use __tls_get_addr_opt in dynamic relocations. */
7472 opt_fd
->dynindx
= -1;
7473 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7474 opt_fd
->dynstr_index
);
7475 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7478 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7479 tga
= &htab
->tls_get_addr
->elf
;
7480 if (opt
!= NULL
&& tga
!= NULL
)
7482 tga
->root
.type
= bfd_link_hash_indirect
;
7483 tga
->root
.u
.i
.link
= &opt
->root
;
7484 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7485 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7487 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7489 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7490 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7491 if (htab
->tls_get_addr
!= NULL
)
7493 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7494 htab
->tls_get_addr
->is_func
= 1;
7500 no_tls_get_addr_opt
= TRUE
;
7502 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7503 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7506 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7510 branch_reloc_hash_match (const bfd
*ibfd
,
7511 const Elf_Internal_Rela
*rel
,
7512 const struct ppc_link_hash_entry
*hash1
,
7513 const struct ppc_link_hash_entry
*hash2
)
7515 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7516 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7517 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7519 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7521 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7522 struct elf_link_hash_entry
*h
;
7524 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7525 h
= elf_follow_link (h
);
7526 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7532 /* Run through all the TLS relocs looking for optimization
7533 opportunities. The linker has been hacked (see ppc64elf.em) to do
7534 a preliminary section layout so that we know the TLS segment
7535 offsets. We can't optimize earlier because some optimizations need
7536 to know the tp offset, and we need to optimize before allocating
7537 dynamic relocations. */
7540 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7544 struct ppc_link_hash_table
*htab
;
7545 unsigned char *toc_ref
;
7548 if (info
->relocatable
|| !info
->executable
)
7551 htab
= ppc_hash_table (info
);
7555 /* Make two passes over the relocs. On the first pass, mark toc
7556 entries involved with tls relocs, and check that tls relocs
7557 involved in setting up a tls_get_addr call are indeed followed by
7558 such a call. If they are not, we can't do any tls optimization.
7559 On the second pass twiddle tls_mask flags to notify
7560 relocate_section that optimization can be done, and adjust got
7561 and plt refcounts. */
7563 for (pass
= 0; pass
< 2; ++pass
)
7564 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7566 Elf_Internal_Sym
*locsyms
= NULL
;
7567 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7569 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7570 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7572 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7573 bfd_boolean found_tls_get_addr_arg
= 0;
7575 /* Read the relocations. */
7576 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7578 if (relstart
== NULL
)
7581 relend
= relstart
+ sec
->reloc_count
;
7582 for (rel
= relstart
; rel
< relend
; rel
++)
7584 enum elf_ppc64_reloc_type r_type
;
7585 unsigned long r_symndx
;
7586 struct elf_link_hash_entry
*h
;
7587 Elf_Internal_Sym
*sym
;
7589 unsigned char *tls_mask
;
7590 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7592 bfd_boolean ok_tprel
, is_local
;
7593 long toc_ref_index
= 0;
7594 int expecting_tls_get_addr
= 0;
7595 bfd_boolean ret
= FALSE
;
7597 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7598 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7602 if (elf_section_data (sec
)->relocs
!= relstart
)
7604 if (toc_ref
!= NULL
)
7607 && (elf_symtab_hdr (ibfd
).contents
7608 != (unsigned char *) locsyms
))
7615 if (h
->root
.type
== bfd_link_hash_defined
7616 || h
->root
.type
== bfd_link_hash_defweak
)
7617 value
= h
->root
.u
.def
.value
;
7618 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7622 found_tls_get_addr_arg
= 0;
7627 /* Symbols referenced by TLS relocs must be of type
7628 STT_TLS. So no need for .opd local sym adjust. */
7629 value
= sym
->st_value
;
7638 && h
->root
.type
== bfd_link_hash_undefweak
)
7642 value
+= sym_sec
->output_offset
;
7643 value
+= sym_sec
->output_section
->vma
;
7644 value
-= htab
->elf
.tls_sec
->vma
;
7645 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7646 < (bfd_vma
) 1 << 32);
7650 r_type
= ELF64_R_TYPE (rel
->r_info
);
7651 /* If this section has old-style __tls_get_addr calls
7652 without marker relocs, then check that each
7653 __tls_get_addr call reloc is preceded by a reloc
7654 that conceivably belongs to the __tls_get_addr arg
7655 setup insn. If we don't find matching arg setup
7656 relocs, don't do any tls optimization. */
7658 && sec
->has_tls_get_addr_call
7660 && (h
== &htab
->tls_get_addr
->elf
7661 || h
== &htab
->tls_get_addr_fd
->elf
)
7662 && !found_tls_get_addr_arg
7663 && is_branch_reloc (r_type
))
7665 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
7666 "TLS optimization disabled\n"),
7667 ibfd
, sec
, rel
->r_offset
);
7672 found_tls_get_addr_arg
= 0;
7675 case R_PPC64_GOT_TLSLD16
:
7676 case R_PPC64_GOT_TLSLD16_LO
:
7677 expecting_tls_get_addr
= 1;
7678 found_tls_get_addr_arg
= 1;
7681 case R_PPC64_GOT_TLSLD16_HI
:
7682 case R_PPC64_GOT_TLSLD16_HA
:
7683 /* These relocs should never be against a symbol
7684 defined in a shared lib. Leave them alone if
7685 that turns out to be the case. */
7692 tls_type
= TLS_TLS
| TLS_LD
;
7695 case R_PPC64_GOT_TLSGD16
:
7696 case R_PPC64_GOT_TLSGD16_LO
:
7697 expecting_tls_get_addr
= 1;
7698 found_tls_get_addr_arg
= 1;
7701 case R_PPC64_GOT_TLSGD16_HI
:
7702 case R_PPC64_GOT_TLSGD16_HA
:
7708 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7710 tls_type
= TLS_TLS
| TLS_GD
;
7713 case R_PPC64_GOT_TPREL16_DS
:
7714 case R_PPC64_GOT_TPREL16_LO_DS
:
7715 case R_PPC64_GOT_TPREL16_HI
:
7716 case R_PPC64_GOT_TPREL16_HA
:
7721 tls_clear
= TLS_TPREL
;
7722 tls_type
= TLS_TLS
| TLS_TPREL
;
7729 found_tls_get_addr_arg
= 1;
7734 case R_PPC64_TOC16_LO
:
7735 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7738 /* Mark this toc entry as referenced by a TLS
7739 code sequence. We can do that now in the
7740 case of R_PPC64_TLS, and after checking for
7741 tls_get_addr for the TOC16 relocs. */
7742 if (toc_ref
== NULL
)
7743 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7744 if (toc_ref
== NULL
)
7748 value
= h
->root
.u
.def
.value
;
7750 value
= sym
->st_value
;
7751 value
+= rel
->r_addend
;
7752 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7753 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7754 if (r_type
== R_PPC64_TLS
7755 || r_type
== R_PPC64_TLSGD
7756 || r_type
== R_PPC64_TLSLD
)
7758 toc_ref
[toc_ref_index
] = 1;
7762 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7767 expecting_tls_get_addr
= 2;
7770 case R_PPC64_TPREL64
:
7774 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7779 tls_set
= TLS_EXPLICIT
;
7780 tls_clear
= TLS_TPREL
;
7785 case R_PPC64_DTPMOD64
:
7789 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7791 if (rel
+ 1 < relend
7793 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7794 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7798 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7801 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7810 tls_set
= TLS_EXPLICIT
;
7821 if (!expecting_tls_get_addr
7822 || !sec
->has_tls_get_addr_call
)
7825 if (rel
+ 1 < relend
7826 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7828 htab
->tls_get_addr_fd
))
7830 if (expecting_tls_get_addr
== 2)
7832 /* Check for toc tls entries. */
7833 unsigned char *toc_tls
;
7836 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7841 if (toc_tls
!= NULL
)
7843 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
7844 found_tls_get_addr_arg
= 1;
7846 toc_ref
[toc_ref_index
] = 1;
7852 if (expecting_tls_get_addr
!= 1)
7855 /* Uh oh, we didn't find the expected call. We
7856 could just mark this symbol to exclude it
7857 from tls optimization but it's safer to skip
7858 the entire optimization. */
7859 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
7860 "TLS optimization disabled\n"),
7861 ibfd
, sec
, rel
->r_offset
);
7866 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7868 struct plt_entry
*ent
;
7869 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7872 if (ent
->addend
== 0)
7874 if (ent
->plt
.refcount
> 0)
7876 ent
->plt
.refcount
-= 1;
7877 expecting_tls_get_addr
= 0;
7883 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7885 struct plt_entry
*ent
;
7886 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7889 if (ent
->addend
== 0)
7891 if (ent
->plt
.refcount
> 0)
7892 ent
->plt
.refcount
-= 1;
7900 if ((tls_set
& TLS_EXPLICIT
) == 0)
7902 struct got_entry
*ent
;
7904 /* Adjust got entry for this reloc. */
7908 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7910 for (; ent
!= NULL
; ent
= ent
->next
)
7911 if (ent
->addend
== rel
->r_addend
7912 && ent
->owner
== ibfd
7913 && ent
->tls_type
== tls_type
)
7920 /* We managed to get rid of a got entry. */
7921 if (ent
->got
.refcount
> 0)
7922 ent
->got
.refcount
-= 1;
7927 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7928 we'll lose one or two dyn relocs. */
7929 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7933 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7935 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7941 *tls_mask
|= tls_set
;
7942 *tls_mask
&= ~tls_clear
;
7945 if (elf_section_data (sec
)->relocs
!= relstart
)
7950 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7952 if (!info
->keep_memory
)
7955 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7959 if (toc_ref
!= NULL
)
7964 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7965 the values of any global symbols in a toc section that has been
7966 edited. Globals in toc sections should be a rarity, so this function
7967 sets a flag if any are found in toc sections other than the one just
7968 edited, so that futher hash table traversals can be avoided. */
7970 struct adjust_toc_info
7973 unsigned long *skip
;
7974 bfd_boolean global_toc_syms
;
7977 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7980 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7982 struct ppc_link_hash_entry
*eh
;
7983 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7986 if (h
->root
.type
!= bfd_link_hash_defined
7987 && h
->root
.type
!= bfd_link_hash_defweak
)
7990 eh
= (struct ppc_link_hash_entry
*) h
;
7991 if (eh
->adjust_done
)
7994 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7996 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7997 i
= toc_inf
->toc
->rawsize
>> 3;
7999 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8001 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8003 (*_bfd_error_handler
)
8004 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8007 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8008 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8011 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8012 eh
->adjust_done
= 1;
8014 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8015 toc_inf
->global_toc_syms
= TRUE
;
8020 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8023 ok_lo_toc_insn (unsigned int insn
)
8025 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8026 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8027 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8028 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8029 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8030 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8031 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8032 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8033 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8034 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8035 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8036 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8037 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8038 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8039 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8041 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8042 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8043 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8046 /* Examine all relocs referencing .toc sections in order to remove
8047 unused .toc entries. */
8050 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8053 struct adjust_toc_info toc_inf
;
8054 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8056 htab
->do_toc_opt
= 1;
8057 toc_inf
.global_toc_syms
= TRUE
;
8058 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8060 asection
*toc
, *sec
;
8061 Elf_Internal_Shdr
*symtab_hdr
;
8062 Elf_Internal_Sym
*local_syms
;
8063 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8064 unsigned long *skip
, *drop
;
8065 unsigned char *used
;
8066 unsigned char *keep
, last
, some_unused
;
8068 if (!is_ppc64_elf (ibfd
))
8071 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8074 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
8075 || elf_discarded_section (toc
))
8080 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8082 /* Look at sections dropped from the final link. */
8085 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8087 if (sec
->reloc_count
== 0
8088 || !elf_discarded_section (sec
)
8089 || get_opd_info (sec
)
8090 || (sec
->flags
& SEC_ALLOC
) == 0
8091 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8094 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8095 if (relstart
== NULL
)
8098 /* Run through the relocs to see which toc entries might be
8100 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8102 enum elf_ppc64_reloc_type r_type
;
8103 unsigned long r_symndx
;
8105 struct elf_link_hash_entry
*h
;
8106 Elf_Internal_Sym
*sym
;
8109 r_type
= ELF64_R_TYPE (rel
->r_info
);
8116 case R_PPC64_TOC16_LO
:
8117 case R_PPC64_TOC16_HI
:
8118 case R_PPC64_TOC16_HA
:
8119 case R_PPC64_TOC16_DS
:
8120 case R_PPC64_TOC16_LO_DS
:
8124 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8125 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8133 val
= h
->root
.u
.def
.value
;
8135 val
= sym
->st_value
;
8136 val
+= rel
->r_addend
;
8138 if (val
>= toc
->size
)
8141 /* Anything in the toc ought to be aligned to 8 bytes.
8142 If not, don't mark as unused. */
8148 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8153 skip
[val
>> 3] = ref_from_discarded
;
8156 if (elf_section_data (sec
)->relocs
!= relstart
)
8160 /* For largetoc loads of address constants, we can convert
8161 . addis rx,2,addr@got@ha
8162 . ld ry,addr@got@l(rx)
8164 . addis rx,2,addr@toc@ha
8165 . addi ry,rx,addr@toc@l
8166 when addr is within 2G of the toc pointer. This then means
8167 that the word storing "addr" in the toc is no longer needed. */
8169 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8170 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8171 && toc
->reloc_count
!= 0)
8173 /* Read toc relocs. */
8174 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8176 if (toc_relocs
== NULL
)
8179 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8181 enum elf_ppc64_reloc_type r_type
;
8182 unsigned long r_symndx
;
8184 struct elf_link_hash_entry
*h
;
8185 Elf_Internal_Sym
*sym
;
8188 r_type
= ELF64_R_TYPE (rel
->r_info
);
8189 if (r_type
!= R_PPC64_ADDR64
)
8192 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8193 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8198 || elf_discarded_section (sym_sec
))
8201 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8206 if (h
->type
== STT_GNU_IFUNC
)
8208 val
= h
->root
.u
.def
.value
;
8212 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8214 val
= sym
->st_value
;
8216 val
+= rel
->r_addend
;
8217 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8219 /* We don't yet know the exact toc pointer value, but we
8220 know it will be somewhere in the toc section. Don't
8221 optimize if the difference from any possible toc
8222 pointer is outside [ff..f80008000, 7fff7fff]. */
8223 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8224 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8227 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8228 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8233 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8238 skip
[rel
->r_offset
>> 3]
8239 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8246 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8250 if (local_syms
!= NULL
8251 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8255 && elf_section_data (sec
)->relocs
!= relstart
)
8257 if (toc_relocs
!= NULL
8258 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8265 /* Now check all kept sections that might reference the toc.
8266 Check the toc itself last. */
8267 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8270 sec
= (sec
== toc
? NULL
8271 : sec
->next
== NULL
? toc
8272 : sec
->next
== toc
&& toc
->next
? toc
->next
8277 if (sec
->reloc_count
== 0
8278 || elf_discarded_section (sec
)
8279 || get_opd_info (sec
)
8280 || (sec
->flags
& SEC_ALLOC
) == 0
8281 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8284 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8286 if (relstart
== NULL
)
8289 /* Mark toc entries referenced as used. */
8292 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8294 enum elf_ppc64_reloc_type r_type
;
8295 unsigned long r_symndx
;
8297 struct elf_link_hash_entry
*h
;
8298 Elf_Internal_Sym
*sym
;
8300 enum {no_check
, check_lo
, check_ha
} insn_check
;
8302 r_type
= ELF64_R_TYPE (rel
->r_info
);
8306 insn_check
= no_check
;
8309 case R_PPC64_GOT_TLSLD16_HA
:
8310 case R_PPC64_GOT_TLSGD16_HA
:
8311 case R_PPC64_GOT_TPREL16_HA
:
8312 case R_PPC64_GOT_DTPREL16_HA
:
8313 case R_PPC64_GOT16_HA
:
8314 case R_PPC64_TOC16_HA
:
8315 insn_check
= check_ha
;
8318 case R_PPC64_GOT_TLSLD16_LO
:
8319 case R_PPC64_GOT_TLSGD16_LO
:
8320 case R_PPC64_GOT_TPREL16_LO_DS
:
8321 case R_PPC64_GOT_DTPREL16_LO_DS
:
8322 case R_PPC64_GOT16_LO
:
8323 case R_PPC64_GOT16_LO_DS
:
8324 case R_PPC64_TOC16_LO
:
8325 case R_PPC64_TOC16_LO_DS
:
8326 insn_check
= check_lo
;
8330 if (insn_check
!= no_check
)
8332 bfd_vma off
= rel
->r_offset
& ~3;
8333 unsigned char buf
[4];
8336 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8341 insn
= bfd_get_32 (ibfd
, buf
);
8342 if (insn_check
== check_lo
8343 ? !ok_lo_toc_insn (insn
)
8344 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8345 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8349 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8350 sprintf (str
, "%#08x", insn
);
8351 info
->callbacks
->einfo
8352 (_("%P: %H: toc optimization is not supported for"
8353 " %s instruction.\n"),
8354 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8361 case R_PPC64_TOC16_LO
:
8362 case R_PPC64_TOC16_HI
:
8363 case R_PPC64_TOC16_HA
:
8364 case R_PPC64_TOC16_DS
:
8365 case R_PPC64_TOC16_LO_DS
:
8366 /* In case we're taking addresses of toc entries. */
8367 case R_PPC64_ADDR64
:
8374 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8375 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8386 val
= h
->root
.u
.def
.value
;
8388 val
= sym
->st_value
;
8389 val
+= rel
->r_addend
;
8391 if (val
>= toc
->size
)
8394 if ((skip
[val
>> 3] & can_optimize
) != 0)
8401 case R_PPC64_TOC16_HA
:
8404 case R_PPC64_TOC16_LO_DS
:
8405 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8406 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8411 if ((opc
& (0x3f << 2)) == (58u << 2))
8416 /* Wrong sort of reloc, or not a ld. We may
8417 as well clear ref_from_discarded too. */
8422 /* For the toc section, we only mark as used if
8423 this entry itself isn't unused. */
8426 && (used
[rel
->r_offset
>> 3]
8427 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8428 /* Do all the relocs again, to catch reference
8436 if (elf_section_data (sec
)->relocs
!= relstart
)
8440 /* Merge the used and skip arrays. Assume that TOC
8441 doublewords not appearing as either used or unused belong
8442 to to an entry more than one doubleword in size. */
8443 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8444 drop
< skip
+ (toc
->size
+ 7) / 8;
8449 *drop
&= ~ref_from_discarded
;
8450 if ((*drop
& can_optimize
) != 0)
8454 else if ((*drop
& ref_from_discarded
) != 0)
8457 last
= ref_from_discarded
;
8467 bfd_byte
*contents
, *src
;
8469 Elf_Internal_Sym
*sym
;
8470 bfd_boolean local_toc_syms
= FALSE
;
8472 /* Shuffle the toc contents, and at the same time convert the
8473 skip array from booleans into offsets. */
8474 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8477 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8479 for (src
= contents
, off
= 0, drop
= skip
;
8480 src
< contents
+ toc
->size
;
8483 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8488 memcpy (src
- off
, src
, 8);
8492 toc
->rawsize
= toc
->size
;
8493 toc
->size
= src
- contents
- off
;
8495 /* Adjust addends for relocs against the toc section sym,
8496 and optimize any accesses we can. */
8497 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8499 if (sec
->reloc_count
== 0
8500 || elf_discarded_section (sec
))
8503 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8505 if (relstart
== NULL
)
8508 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8510 enum elf_ppc64_reloc_type r_type
;
8511 unsigned long r_symndx
;
8513 struct elf_link_hash_entry
*h
;
8516 r_type
= ELF64_R_TYPE (rel
->r_info
);
8523 case R_PPC64_TOC16_LO
:
8524 case R_PPC64_TOC16_HI
:
8525 case R_PPC64_TOC16_HA
:
8526 case R_PPC64_TOC16_DS
:
8527 case R_PPC64_TOC16_LO_DS
:
8528 case R_PPC64_ADDR64
:
8532 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8533 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8541 val
= h
->root
.u
.def
.value
;
8544 val
= sym
->st_value
;
8546 local_toc_syms
= TRUE
;
8549 val
+= rel
->r_addend
;
8551 if (val
> toc
->rawsize
)
8553 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8555 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8557 Elf_Internal_Rela
*tocrel
8558 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8559 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8563 case R_PPC64_TOC16_HA
:
8564 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8567 case R_PPC64_TOC16_LO_DS
:
8568 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8572 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
8574 info
->callbacks
->einfo
8575 (_("%P: %H: %s relocation references "
8576 "optimized away TOC entry\n"),
8577 ibfd
, sec
, rel
->r_offset
,
8578 ppc64_elf_howto_table
[r_type
]->name
);
8579 bfd_set_error (bfd_error_bad_value
);
8582 rel
->r_addend
= tocrel
->r_addend
;
8583 elf_section_data (sec
)->relocs
= relstart
;
8587 if (h
!= NULL
|| sym
->st_value
!= 0)
8590 rel
->r_addend
-= skip
[val
>> 3];
8591 elf_section_data (sec
)->relocs
= relstart
;
8594 if (elf_section_data (sec
)->relocs
!= relstart
)
8598 /* We shouldn't have local or global symbols defined in the TOC,
8599 but handle them anyway. */
8600 if (local_syms
!= NULL
)
8601 for (sym
= local_syms
;
8602 sym
< local_syms
+ symtab_hdr
->sh_info
;
8604 if (sym
->st_value
!= 0
8605 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8609 if (sym
->st_value
> toc
->rawsize
)
8610 i
= toc
->rawsize
>> 3;
8612 i
= sym
->st_value
>> 3;
8614 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8617 (*_bfd_error_handler
)
8618 (_("%s defined on removed toc entry"),
8619 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8622 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8623 sym
->st_value
= (bfd_vma
) i
<< 3;
8626 sym
->st_value
-= skip
[i
];
8627 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8630 /* Adjust any global syms defined in this toc input section. */
8631 if (toc_inf
.global_toc_syms
)
8634 toc_inf
.skip
= skip
;
8635 toc_inf
.global_toc_syms
= FALSE
;
8636 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8640 if (toc
->reloc_count
!= 0)
8642 Elf_Internal_Shdr
*rel_hdr
;
8643 Elf_Internal_Rela
*wrel
;
8646 /* Remove unused toc relocs, and adjust those we keep. */
8647 if (toc_relocs
== NULL
)
8648 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8650 if (toc_relocs
== NULL
)
8654 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8655 if ((skip
[rel
->r_offset
>> 3]
8656 & (ref_from_discarded
| can_optimize
)) == 0)
8658 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8659 wrel
->r_info
= rel
->r_info
;
8660 wrel
->r_addend
= rel
->r_addend
;
8663 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8664 &local_syms
, NULL
, NULL
))
8667 elf_section_data (toc
)->relocs
= toc_relocs
;
8668 toc
->reloc_count
= wrel
- toc_relocs
;
8669 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8670 sz
= rel_hdr
->sh_entsize
;
8671 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8674 else if (toc_relocs
!= NULL
8675 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8678 if (local_syms
!= NULL
8679 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8681 if (!info
->keep_memory
)
8684 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8692 /* Return true iff input section I references the TOC using
8693 instructions limited to +/-32k offsets. */
8696 ppc64_elf_has_small_toc_reloc (asection
*i
)
8698 return (is_ppc64_elf (i
->owner
)
8699 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8702 /* Allocate space for one GOT entry. */
8705 allocate_got (struct elf_link_hash_entry
*h
,
8706 struct bfd_link_info
*info
,
8707 struct got_entry
*gent
)
8709 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8711 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8712 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8714 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8715 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8716 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8718 gent
->got
.offset
= got
->size
;
8719 got
->size
+= entsize
;
8721 dyn
= htab
->elf
.dynamic_sections_created
;
8723 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8724 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8725 || h
->root
.type
!= bfd_link_hash_undefweak
))
8727 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8728 relgot
->size
+= rentsize
;
8730 else if (h
->type
== STT_GNU_IFUNC
)
8732 asection
*relgot
= htab
->reliplt
;
8733 relgot
->size
+= rentsize
;
8734 htab
->got_reli_size
+= rentsize
;
8738 /* This function merges got entries in the same toc group. */
8741 merge_got_entries (struct got_entry
**pent
)
8743 struct got_entry
*ent
, *ent2
;
8745 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8746 if (!ent
->is_indirect
)
8747 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8748 if (!ent2
->is_indirect
8749 && ent2
->addend
== ent
->addend
8750 && ent2
->tls_type
== ent
->tls_type
8751 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8753 ent2
->is_indirect
= TRUE
;
8754 ent2
->got
.ent
= ent
;
8758 /* Allocate space in .plt, .got and associated reloc sections for
8762 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8764 struct bfd_link_info
*info
;
8765 struct ppc_link_hash_table
*htab
;
8767 struct ppc_link_hash_entry
*eh
;
8768 struct elf_dyn_relocs
*p
;
8769 struct got_entry
**pgent
, *gent
;
8771 if (h
->root
.type
== bfd_link_hash_indirect
)
8774 info
= (struct bfd_link_info
*) inf
;
8775 htab
= ppc_hash_table (info
);
8779 if ((htab
->elf
.dynamic_sections_created
8781 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8782 || h
->type
== STT_GNU_IFUNC
)
8784 struct plt_entry
*pent
;
8785 bfd_boolean doneone
= FALSE
;
8786 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8787 if (pent
->plt
.refcount
> 0)
8789 if (!htab
->elf
.dynamic_sections_created
8790 || h
->dynindx
== -1)
8793 pent
->plt
.offset
= s
->size
;
8794 s
->size
+= PLT_ENTRY_SIZE
;
8799 /* If this is the first .plt entry, make room for the special
8803 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8805 pent
->plt
.offset
= s
->size
;
8807 /* Make room for this entry. */
8808 s
->size
+= PLT_ENTRY_SIZE
;
8810 /* Make room for the .glink code. */
8813 s
->size
+= GLINK_CALL_STUB_SIZE
;
8814 /* We need bigger stubs past index 32767. */
8815 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8819 /* We also need to make an entry in the .rela.plt section. */
8822 s
->size
+= sizeof (Elf64_External_Rela
);
8826 pent
->plt
.offset
= (bfd_vma
) -1;
8829 h
->plt
.plist
= NULL
;
8835 h
->plt
.plist
= NULL
;
8839 eh
= (struct ppc_link_hash_entry
*) h
;
8840 /* Run through the TLS GD got entries first if we're changing them
8842 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8843 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8844 if (gent
->got
.refcount
> 0
8845 && (gent
->tls_type
& TLS_GD
) != 0)
8847 /* This was a GD entry that has been converted to TPREL. If
8848 there happens to be a TPREL entry we can use that one. */
8849 struct got_entry
*ent
;
8850 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8851 if (ent
->got
.refcount
> 0
8852 && (ent
->tls_type
& TLS_TPREL
) != 0
8853 && ent
->addend
== gent
->addend
8854 && ent
->owner
== gent
->owner
)
8856 gent
->got
.refcount
= 0;
8860 /* If not, then we'll be using our own TPREL entry. */
8861 if (gent
->got
.refcount
!= 0)
8862 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8865 /* Remove any list entry that won't generate a word in the GOT before
8866 we call merge_got_entries. Otherwise we risk merging to empty
8868 pgent
= &h
->got
.glist
;
8869 while ((gent
= *pgent
) != NULL
)
8870 if (gent
->got
.refcount
> 0)
8872 if ((gent
->tls_type
& TLS_LD
) != 0
8875 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8876 *pgent
= gent
->next
;
8879 pgent
= &gent
->next
;
8882 *pgent
= gent
->next
;
8884 if (!htab
->do_multi_toc
)
8885 merge_got_entries (&h
->got
.glist
);
8887 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8888 if (!gent
->is_indirect
)
8890 /* Make sure this symbol is output as a dynamic symbol.
8891 Undefined weak syms won't yet be marked as dynamic,
8892 nor will all TLS symbols. */
8893 if (h
->dynindx
== -1
8895 && h
->type
!= STT_GNU_IFUNC
8896 && htab
->elf
.dynamic_sections_created
)
8898 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8902 if (!is_ppc64_elf (gent
->owner
))
8905 allocate_got (h
, info
, gent
);
8908 if (eh
->dyn_relocs
== NULL
8909 || (!htab
->elf
.dynamic_sections_created
8910 && h
->type
!= STT_GNU_IFUNC
))
8913 /* In the shared -Bsymbolic case, discard space allocated for
8914 dynamic pc-relative relocs against symbols which turn out to be
8915 defined in regular objects. For the normal shared case, discard
8916 space for relocs that have become local due to symbol visibility
8921 /* Relocs that use pc_count are those that appear on a call insn,
8922 or certain REL relocs (see must_be_dyn_reloc) that can be
8923 generated via assembly. We want calls to protected symbols to
8924 resolve directly to the function rather than going via the plt.
8925 If people want function pointer comparisons to work as expected
8926 then they should avoid writing weird assembly. */
8927 if (SYMBOL_CALLS_LOCAL (info
, h
))
8929 struct elf_dyn_relocs
**pp
;
8931 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8933 p
->count
-= p
->pc_count
;
8942 /* Also discard relocs on undefined weak syms with non-default
8944 if (eh
->dyn_relocs
!= NULL
8945 && h
->root
.type
== bfd_link_hash_undefweak
)
8947 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8948 eh
->dyn_relocs
= NULL
;
8950 /* Make sure this symbol is output as a dynamic symbol.
8951 Undefined weak syms won't yet be marked as dynamic. */
8952 else if (h
->dynindx
== -1
8953 && !h
->forced_local
)
8955 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8960 else if (h
->type
== STT_GNU_IFUNC
)
8962 if (!h
->non_got_ref
)
8963 eh
->dyn_relocs
= NULL
;
8965 else if (ELIMINATE_COPY_RELOCS
)
8967 /* For the non-shared case, discard space for relocs against
8968 symbols which turn out to need copy relocs or are not
8974 /* Make sure this symbol is output as a dynamic symbol.
8975 Undefined weak syms won't yet be marked as dynamic. */
8976 if (h
->dynindx
== -1
8977 && !h
->forced_local
)
8979 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8983 /* If that succeeded, we know we'll be keeping all the
8985 if (h
->dynindx
!= -1)
8989 eh
->dyn_relocs
= NULL
;
8994 /* Finally, allocate space. */
8995 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8997 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8998 if (!htab
->elf
.dynamic_sections_created
)
8999 sreloc
= htab
->reliplt
;
9000 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9006 /* Find any dynamic relocs that apply to read-only sections. */
9009 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9011 struct ppc_link_hash_entry
*eh
;
9012 struct elf_dyn_relocs
*p
;
9014 eh
= (struct ppc_link_hash_entry
*) h
;
9015 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9017 asection
*s
= p
->sec
->output_section
;
9019 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
9021 struct bfd_link_info
*info
= inf
;
9023 info
->flags
|= DF_TEXTREL
;
9025 /* Not an error, just cut short the traversal. */
9032 /* Set the sizes of the dynamic sections. */
9035 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9036 struct bfd_link_info
*info
)
9038 struct ppc_link_hash_table
*htab
;
9043 struct got_entry
*first_tlsld
;
9045 htab
= ppc_hash_table (info
);
9049 dynobj
= htab
->elf
.dynobj
;
9053 if (htab
->elf
.dynamic_sections_created
)
9055 /* Set the contents of the .interp section to the interpreter. */
9056 if (info
->executable
)
9058 s
= bfd_get_section_by_name (dynobj
, ".interp");
9061 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9062 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9066 /* Set up .got offsets for local syms, and space for local dynamic
9068 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9070 struct got_entry
**lgot_ents
;
9071 struct got_entry
**end_lgot_ents
;
9072 struct plt_entry
**local_plt
;
9073 struct plt_entry
**end_local_plt
;
9074 unsigned char *lgot_masks
;
9075 bfd_size_type locsymcount
;
9076 Elf_Internal_Shdr
*symtab_hdr
;
9079 if (!is_ppc64_elf (ibfd
))
9082 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9084 struct elf_dyn_relocs
*p
;
9086 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9088 if (!bfd_is_abs_section (p
->sec
)
9089 && bfd_is_abs_section (p
->sec
->output_section
))
9091 /* Input section has been discarded, either because
9092 it is a copy of a linkonce section or due to
9093 linker script /DISCARD/, so we'll be discarding
9096 else if (p
->count
!= 0)
9098 srel
= elf_section_data (p
->sec
)->sreloc
;
9099 if (!htab
->elf
.dynamic_sections_created
)
9100 srel
= htab
->reliplt
;
9101 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9102 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9103 info
->flags
|= DF_TEXTREL
;
9108 lgot_ents
= elf_local_got_ents (ibfd
);
9112 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9113 locsymcount
= symtab_hdr
->sh_info
;
9114 end_lgot_ents
= lgot_ents
+ locsymcount
;
9115 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9116 end_local_plt
= local_plt
+ locsymcount
;
9117 lgot_masks
= (unsigned char *) end_local_plt
;
9118 s
= ppc64_elf_tdata (ibfd
)->got
;
9119 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9120 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9122 struct got_entry
**pent
, *ent
;
9125 while ((ent
= *pent
) != NULL
)
9126 if (ent
->got
.refcount
> 0)
9128 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9130 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9135 unsigned int num
= 1;
9136 ent
->got
.offset
= s
->size
;
9137 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9141 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
9142 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
9145 += num
* sizeof (Elf64_External_Rela
);
9147 += num
* sizeof (Elf64_External_Rela
);
9156 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9157 for (; local_plt
< end_local_plt
; ++local_plt
)
9159 struct plt_entry
*ent
;
9161 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9162 if (ent
->plt
.refcount
> 0)
9165 ent
->plt
.offset
= s
->size
;
9166 s
->size
+= PLT_ENTRY_SIZE
;
9168 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
9171 ent
->plt
.offset
= (bfd_vma
) -1;
9175 /* Allocate global sym .plt and .got entries, and space for global
9176 sym dynamic relocs. */
9177 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9180 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9182 struct got_entry
*ent
;
9184 if (!is_ppc64_elf (ibfd
))
9187 ent
= ppc64_tlsld_got (ibfd
);
9188 if (ent
->got
.refcount
> 0)
9190 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9192 ent
->is_indirect
= TRUE
;
9193 ent
->got
.ent
= first_tlsld
;
9197 if (first_tlsld
== NULL
)
9199 s
= ppc64_elf_tdata (ibfd
)->got
;
9200 ent
->got
.offset
= s
->size
;
9205 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9206 srel
->size
+= sizeof (Elf64_External_Rela
);
9211 ent
->got
.offset
= (bfd_vma
) -1;
9214 /* We now have determined the sizes of the various dynamic sections.
9215 Allocate memory for them. */
9217 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9219 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9222 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9223 /* These haven't been allocated yet; don't strip. */
9225 else if (s
== htab
->got
9229 || s
== htab
->dynbss
)
9231 /* Strip this section if we don't need it; see the
9234 else if (s
== htab
->glink_eh_frame
)
9236 if (!bfd_is_abs_section (s
->output_section
))
9237 /* Not sized yet. */
9240 else if (CONST_STRNEQ (s
->name
, ".rela"))
9244 if (s
!= htab
->relplt
)
9247 /* We use the reloc_count field as a counter if we need
9248 to copy relocs into the output file. */
9254 /* It's not one of our sections, so don't allocate space. */
9260 /* If we don't need this section, strip it from the
9261 output file. This is mostly to handle .rela.bss and
9262 .rela.plt. We must create both sections in
9263 create_dynamic_sections, because they must be created
9264 before the linker maps input sections to output
9265 sections. The linker does that before
9266 adjust_dynamic_symbol is called, and it is that
9267 function which decides whether anything needs to go
9268 into these sections. */
9269 s
->flags
|= SEC_EXCLUDE
;
9273 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9276 /* Allocate memory for the section contents. We use bfd_zalloc
9277 here in case unused entries are not reclaimed before the
9278 section's contents are written out. This should not happen,
9279 but this way if it does we get a R_PPC64_NONE reloc in .rela
9280 sections instead of garbage.
9281 We also rely on the section contents being zero when writing
9283 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9284 if (s
->contents
== NULL
)
9288 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9290 if (!is_ppc64_elf (ibfd
))
9293 s
= ppc64_elf_tdata (ibfd
)->got
;
9294 if (s
!= NULL
&& s
!= htab
->got
)
9297 s
->flags
|= SEC_EXCLUDE
;
9300 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9301 if (s
->contents
== NULL
)
9305 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9309 s
->flags
|= SEC_EXCLUDE
;
9312 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9313 if (s
->contents
== NULL
)
9321 if (htab
->elf
.dynamic_sections_created
)
9323 /* Add some entries to the .dynamic section. We fill in the
9324 values later, in ppc64_elf_finish_dynamic_sections, but we
9325 must add the entries now so that we get the correct size for
9326 the .dynamic section. The DT_DEBUG entry is filled in by the
9327 dynamic linker and used by the debugger. */
9328 #define add_dynamic_entry(TAG, VAL) \
9329 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9331 if (info
->executable
)
9333 if (!add_dynamic_entry (DT_DEBUG
, 0))
9337 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9339 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9340 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9341 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9342 || !add_dynamic_entry (DT_JMPREL
, 0)
9343 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9349 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9350 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9354 if (!htab
->no_tls_get_addr_opt
9355 && htab
->tls_get_addr_fd
!= NULL
9356 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9357 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9362 if (!add_dynamic_entry (DT_RELA
, 0)
9363 || !add_dynamic_entry (DT_RELASZ
, 0)
9364 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9367 /* If any dynamic relocs apply to a read-only section,
9368 then we need a DT_TEXTREL entry. */
9369 if ((info
->flags
& DF_TEXTREL
) == 0)
9370 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9372 if ((info
->flags
& DF_TEXTREL
) != 0)
9374 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9379 #undef add_dynamic_entry
9384 /* Determine the type of stub needed, if any, for a call. */
9386 static inline enum ppc_stub_type
9387 ppc_type_of_stub (asection
*input_sec
,
9388 const Elf_Internal_Rela
*rel
,
9389 struct ppc_link_hash_entry
**hash
,
9390 struct plt_entry
**plt_ent
,
9391 bfd_vma destination
)
9393 struct ppc_link_hash_entry
*h
= *hash
;
9395 bfd_vma branch_offset
;
9396 bfd_vma max_branch_offset
;
9397 enum elf_ppc64_reloc_type r_type
;
9401 struct plt_entry
*ent
;
9402 struct ppc_link_hash_entry
*fdh
= h
;
9404 && h
->oh
->is_func_descriptor
)
9406 fdh
= ppc_follow_link (h
->oh
);
9410 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9411 if (ent
->addend
== rel
->r_addend
9412 && ent
->plt
.offset
!= (bfd_vma
) -1)
9415 return ppc_stub_plt_call
;
9418 /* Here, we know we don't have a plt entry. If we don't have a
9419 either a defined function descriptor or a defined entry symbol
9420 in a regular object file, then it is pointless trying to make
9421 any other type of stub. */
9422 if (!is_static_defined (&fdh
->elf
)
9423 && !is_static_defined (&h
->elf
))
9424 return ppc_stub_none
;
9426 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9428 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9429 struct plt_entry
**local_plt
= (struct plt_entry
**)
9430 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9431 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9433 if (local_plt
[r_symndx
] != NULL
)
9435 struct plt_entry
*ent
;
9437 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9438 if (ent
->addend
== rel
->r_addend
9439 && ent
->plt
.offset
!= (bfd_vma
) -1)
9442 return ppc_stub_plt_call
;
9447 /* Determine where the call point is. */
9448 location
= (input_sec
->output_offset
9449 + input_sec
->output_section
->vma
9452 branch_offset
= destination
- location
;
9453 r_type
= ELF64_R_TYPE (rel
->r_info
);
9455 /* Determine if a long branch stub is needed. */
9456 max_branch_offset
= 1 << 25;
9457 if (r_type
!= R_PPC64_REL24
)
9458 max_branch_offset
= 1 << 15;
9460 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9461 /* We need a stub. Figure out whether a long_branch or plt_branch
9463 return ppc_stub_long_branch
;
9465 return ppc_stub_none
;
9468 /* Build a .plt call stub. */
9470 static inline bfd_byte
*
9471 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
,
9472 bfd_boolean plt_static_chain
)
9474 #define PPC_LO(v) ((v) & 0xffff)
9475 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9476 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9478 if (PPC_HA (offset
) != 0)
9483 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9484 r
[1].r_offset
= r
[0].r_offset
+ 4;
9485 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9486 r
[1].r_addend
= r
[0].r_addend
;
9487 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9489 r
[2].r_offset
= r
[1].r_offset
+ 4;
9490 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9491 r
[2].r_addend
= r
[0].r_addend
;
9495 r
[2].r_offset
= r
[1].r_offset
+ 8;
9496 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9497 r
[2].r_addend
= r
[0].r_addend
+ 8;
9498 if (plt_static_chain
)
9500 r
[3].r_offset
= r
[2].r_offset
+ 4;
9501 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9502 r
[3].r_addend
= r
[0].r_addend
+ 16;
9506 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9507 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9508 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9509 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9511 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9514 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9515 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9516 if (plt_static_chain
)
9517 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9518 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9525 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9526 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9528 r
[1].r_offset
= r
[0].r_offset
+ 4;
9529 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9530 r
[1].r_addend
= r
[0].r_addend
;
9534 r
[1].r_offset
= r
[0].r_offset
+ 8;
9535 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9536 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
9537 if (plt_static_chain
)
9539 r
[2].r_offset
= r
[1].r_offset
+ 4;
9540 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9541 r
[2].r_addend
= r
[0].r_addend
+ 8;
9545 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9546 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9547 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9549 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9552 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9553 if (plt_static_chain
)
9554 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9555 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9556 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9561 /* Build a special .plt call stub for __tls_get_addr. */
9563 #define LD_R11_0R3 0xe9630000
9564 #define LD_R12_0R3 0xe9830000
9565 #define MR_R0_R3 0x7c601b78
9566 #define CMPDI_R11_0 0x2c2b0000
9567 #define ADD_R3_R12_R13 0x7c6c6a14
9568 #define BEQLR 0x4d820020
9569 #define MR_R3_R0 0x7c030378
9570 #define MFLR_R11 0x7d6802a6
9571 #define STD_R11_0R1 0xf9610000
9572 #define BCTRL 0x4e800421
9573 #define LD_R11_0R1 0xe9610000
9574 #define LD_R2_0R1 0xe8410000
9575 #define MTLR_R11 0x7d6803a6
9577 static inline bfd_byte
*
9578 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9579 Elf_Internal_Rela
*r
, bfd_boolean plt_static_chain
)
9581 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9582 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9583 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9584 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9585 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9586 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9587 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9588 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9589 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9592 r
[0].r_offset
+= 9 * 4;
9593 p
= build_plt_stub (obfd
, p
, offset
, r
, plt_static_chain
);
9594 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9596 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9597 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9598 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9599 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9604 static Elf_Internal_Rela
*
9605 get_relocs (asection
*sec
, int count
)
9607 Elf_Internal_Rela
*relocs
;
9608 struct bfd_elf_section_data
*elfsec_data
;
9610 elfsec_data
= elf_section_data (sec
);
9611 relocs
= elfsec_data
->relocs
;
9614 bfd_size_type relsize
;
9615 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9616 relocs
= bfd_alloc (sec
->owner
, relsize
);
9619 elfsec_data
->relocs
= relocs
;
9620 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9621 sizeof (Elf_Internal_Shdr
));
9622 if (elfsec_data
->rela
.hdr
== NULL
)
9624 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9625 * sizeof (Elf64_External_Rela
));
9626 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9627 sec
->reloc_count
= 0;
9629 relocs
+= sec
->reloc_count
;
9630 sec
->reloc_count
+= count
;
9635 get_r2off (struct bfd_link_info
*info
,
9636 struct ppc_stub_hash_entry
*stub_entry
)
9638 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9639 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9643 /* Support linking -R objects. Get the toc pointer from the
9646 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9647 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9649 if (strcmp (opd
->name
, ".opd") != 0
9650 || opd
->reloc_count
!= 0)
9652 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for %s\n"),
9653 stub_entry
->h
->elf
.root
.root
.string
);
9654 bfd_set_error (bfd_error_bad_value
);
9657 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9659 r2off
= bfd_get_64 (opd
->owner
, buf
);
9660 r2off
-= elf_gp (info
->output_bfd
);
9662 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9667 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9669 struct ppc_stub_hash_entry
*stub_entry
;
9670 struct ppc_branch_hash_entry
*br_entry
;
9671 struct bfd_link_info
*info
;
9672 struct ppc_link_hash_table
*htab
;
9677 Elf_Internal_Rela
*r
;
9680 /* Massage our args to the form they really have. */
9681 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9684 htab
= ppc_hash_table (info
);
9688 /* Make a note of the offset within the stubs for this entry. */
9689 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9690 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9692 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9693 switch (stub_entry
->stub_type
)
9695 case ppc_stub_long_branch
:
9696 case ppc_stub_long_branch_r2off
:
9697 /* Branches are relative. This is where we are going to. */
9698 off
= dest
= (stub_entry
->target_value
9699 + stub_entry
->target_section
->output_offset
9700 + stub_entry
->target_section
->output_section
->vma
);
9702 /* And this is where we are coming from. */
9703 off
-= (stub_entry
->stub_offset
9704 + stub_entry
->stub_sec
->output_offset
9705 + stub_entry
->stub_sec
->output_section
->vma
);
9708 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9710 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9714 htab
->stub_error
= TRUE
;
9717 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9720 if (PPC_HA (r2off
) != 0)
9723 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9726 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9730 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9732 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9734 info
->callbacks
->einfo (_("%P: long branch stub `%s' offset overflow\n"),
9735 stub_entry
->root
.string
);
9736 htab
->stub_error
= TRUE
;
9740 if (info
->emitrelocations
)
9742 r
= get_relocs (stub_entry
->stub_sec
, 1);
9745 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9746 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9748 if (stub_entry
->h
!= NULL
)
9750 struct elf_link_hash_entry
**hashes
;
9751 unsigned long symndx
;
9752 struct ppc_link_hash_entry
*h
;
9754 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9757 bfd_size_type hsize
;
9759 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9760 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9763 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9764 htab
->stub_globals
= 1;
9766 symndx
= htab
->stub_globals
++;
9768 hashes
[symndx
] = &h
->elf
;
9769 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9770 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9771 h
= ppc_follow_link (h
->oh
);
9772 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9773 /* H is an opd symbol. The addend must be zero. */
9777 off
= (h
->elf
.root
.u
.def
.value
9778 + h
->elf
.root
.u
.def
.section
->output_offset
9779 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9786 case ppc_stub_plt_branch
:
9787 case ppc_stub_plt_branch_r2off
:
9788 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9789 stub_entry
->root
.string
+ 9,
9791 if (br_entry
== NULL
)
9793 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
9794 stub_entry
->root
.string
);
9795 htab
->stub_error
= TRUE
;
9799 dest
= (stub_entry
->target_value
9800 + stub_entry
->target_section
->output_offset
9801 + stub_entry
->target_section
->output_section
->vma
);
9803 bfd_put_64 (htab
->brlt
->owner
, dest
,
9804 htab
->brlt
->contents
+ br_entry
->offset
);
9806 if (br_entry
->iter
== htab
->stub_iteration
)
9810 if (htab
->relbrlt
!= NULL
)
9812 /* Create a reloc for the branch lookup table entry. */
9813 Elf_Internal_Rela rela
;
9816 rela
.r_offset
= (br_entry
->offset
9817 + htab
->brlt
->output_offset
9818 + htab
->brlt
->output_section
->vma
);
9819 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9820 rela
.r_addend
= dest
;
9822 rl
= htab
->relbrlt
->contents
;
9823 rl
+= (htab
->relbrlt
->reloc_count
++
9824 * sizeof (Elf64_External_Rela
));
9825 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9827 else if (info
->emitrelocations
)
9829 r
= get_relocs (htab
->brlt
, 1);
9832 /* brlt, being SEC_LINKER_CREATED does not go through the
9833 normal reloc processing. Symbols and offsets are not
9834 translated from input file to output file form, so
9835 set up the offset per the output file. */
9836 r
->r_offset
= (br_entry
->offset
9837 + htab
->brlt
->output_offset
9838 + htab
->brlt
->output_section
->vma
);
9839 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9844 dest
= (br_entry
->offset
9845 + htab
->brlt
->output_offset
9846 + htab
->brlt
->output_section
->vma
);
9849 - elf_gp (htab
->brlt
->output_section
->owner
)
9850 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9852 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9854 info
->callbacks
->einfo
9855 (_("%P: linkage table error against `%s'\n"),
9856 stub_entry
->root
.string
);
9857 bfd_set_error (bfd_error_bad_value
);
9858 htab
->stub_error
= TRUE
;
9862 if (info
->emitrelocations
)
9864 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9867 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9868 if (bfd_big_endian (info
->output_bfd
))
9870 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9872 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9873 r
[0].r_addend
= dest
;
9874 if (PPC_HA (off
) != 0)
9876 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9877 r
[1].r_offset
= r
[0].r_offset
+ 4;
9878 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9879 r
[1].r_addend
= r
[0].r_addend
;
9883 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9885 if (PPC_HA (off
) != 0)
9888 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9890 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9895 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9900 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9904 htab
->stub_error
= TRUE
;
9908 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9911 if (PPC_HA (off
) != 0)
9914 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9916 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9921 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9925 if (PPC_HA (r2off
) != 0)
9928 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9931 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9934 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9936 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9939 case ppc_stub_plt_call
:
9940 if (stub_entry
->h
!= NULL
9941 && stub_entry
->h
->is_func_descriptor
9942 && stub_entry
->h
->oh
!= NULL
)
9944 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9946 /* If the old-ABI "dot-symbol" is undefined make it weak so
9947 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9948 FIXME: We used to define the symbol on one of the call
9949 stubs instead, which is why we test symbol section id
9950 against htab->top_id in various places. Likely all
9951 these checks could now disappear. */
9952 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9953 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9954 /* Stop undo_symbol_twiddle changing it back to undefined. */
9955 fh
->was_undefined
= 0;
9958 /* Now build the stub. */
9959 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9960 if (dest
>= (bfd_vma
) -2)
9964 if (!htab
->elf
.dynamic_sections_created
9965 || stub_entry
->h
== NULL
9966 || stub_entry
->h
->elf
.dynindx
== -1)
9969 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9971 if (stub_entry
->h
== NULL
9972 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9974 Elf_Internal_Rela rela
;
9977 rela
.r_offset
= dest
;
9978 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9979 rela
.r_addend
= (stub_entry
->target_value
9980 + stub_entry
->target_section
->output_offset
9981 + stub_entry
->target_section
->output_section
->vma
);
9983 rl
= (htab
->reliplt
->contents
9984 + (htab
->reliplt
->reloc_count
++
9985 * sizeof (Elf64_External_Rela
)));
9986 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9987 stub_entry
->plt_ent
->plt
.offset
|= 1;
9991 - elf_gp (plt
->output_section
->owner
)
9992 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9994 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9996 info
->callbacks
->einfo
9997 (_("%P: linkage table error against `%s'\n"),
9998 stub_entry
->h
!= NULL
9999 ? stub_entry
->h
->elf
.root
.root
.string
10001 bfd_set_error (bfd_error_bad_value
);
10002 htab
->stub_error
= TRUE
;
10007 if (info
->emitrelocations
)
10009 r
= get_relocs (stub_entry
->stub_sec
,
10011 + (PPC_HA (off
) != 0)
10012 + (htab
->plt_static_chain
10013 && PPC_HA (off
+ 16) == PPC_HA (off
))));
10016 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10017 if (bfd_big_endian (info
->output_bfd
))
10018 r
[0].r_offset
+= 2;
10019 r
[0].r_addend
= dest
;
10021 if (stub_entry
->h
!= NULL
10022 && (stub_entry
->h
== htab
->tls_get_addr_fd
10023 || stub_entry
->h
== htab
->tls_get_addr
)
10024 && !htab
->no_tls_get_addr_opt
)
10025 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
,
10026 htab
->plt_static_chain
);
10028 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
,
10029 htab
->plt_static_chain
);
10038 stub_entry
->stub_sec
->size
+= size
;
10040 if (htab
->emit_stub_syms
)
10042 struct elf_link_hash_entry
*h
;
10045 const char *const stub_str
[] = { "long_branch",
10046 "long_branch_r2off",
10048 "plt_branch_r2off",
10051 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10052 len2
= strlen (stub_entry
->root
.string
);
10053 name
= bfd_malloc (len1
+ len2
+ 2);
10056 memcpy (name
, stub_entry
->root
.string
, 9);
10057 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10058 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10059 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10062 if (h
->root
.type
== bfd_link_hash_new
)
10064 h
->root
.type
= bfd_link_hash_defined
;
10065 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10066 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10067 h
->ref_regular
= 1;
10068 h
->def_regular
= 1;
10069 h
->ref_regular_nonweak
= 1;
10070 h
->forced_local
= 1;
10078 /* As above, but don't actually build the stub. Just bump offset so
10079 we know stub section sizes, and select plt_branch stubs where
10080 long_branch stubs won't do. */
10083 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10085 struct ppc_stub_hash_entry
*stub_entry
;
10086 struct bfd_link_info
*info
;
10087 struct ppc_link_hash_table
*htab
;
10091 /* Massage our args to the form they really have. */
10092 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10095 htab
= ppc_hash_table (info
);
10099 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10102 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10103 if (off
>= (bfd_vma
) -2)
10106 if (!htab
->elf
.dynamic_sections_created
10107 || stub_entry
->h
== NULL
10108 || stub_entry
->h
->elf
.dynindx
== -1)
10110 off
+= (plt
->output_offset
10111 + plt
->output_section
->vma
10112 - elf_gp (plt
->output_section
->owner
)
10113 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10115 size
= PLT_CALL_STUB_SIZE
;
10116 if (!htab
->plt_static_chain
)
10118 if (PPC_HA (off
) == 0)
10120 if (PPC_HA (off
+ 8 + 8 * htab
->plt_static_chain
) != PPC_HA (off
))
10122 if (stub_entry
->h
!= NULL
10123 && (stub_entry
->h
== htab
->tls_get_addr_fd
10124 || stub_entry
->h
== htab
->tls_get_addr
)
10125 && !htab
->no_tls_get_addr_opt
)
10127 if (info
->emitrelocations
)
10129 stub_entry
->stub_sec
->reloc_count
10131 + (PPC_HA (off
) != 0)
10132 + (htab
->plt_static_chain
10133 && PPC_HA (off
+ 16) == PPC_HA (off
)));
10134 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10139 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10143 off
= (stub_entry
->target_value
10144 + stub_entry
->target_section
->output_offset
10145 + stub_entry
->target_section
->output_section
->vma
);
10146 off
-= (stub_entry
->stub_sec
->size
10147 + stub_entry
->stub_sec
->output_offset
10148 + stub_entry
->stub_sec
->output_section
->vma
);
10150 /* Reset the stub type from the plt variant in case we now
10151 can reach with a shorter stub. */
10152 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10153 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10156 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10158 r2off
= get_r2off (info
, stub_entry
);
10161 htab
->stub_error
= TRUE
;
10165 if (PPC_HA (r2off
) != 0)
10170 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10171 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10173 struct ppc_branch_hash_entry
*br_entry
;
10175 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10176 stub_entry
->root
.string
+ 9,
10178 if (br_entry
== NULL
)
10180 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
10181 stub_entry
->root
.string
);
10182 htab
->stub_error
= TRUE
;
10186 if (br_entry
->iter
!= htab
->stub_iteration
)
10188 br_entry
->iter
= htab
->stub_iteration
;
10189 br_entry
->offset
= htab
->brlt
->size
;
10190 htab
->brlt
->size
+= 8;
10192 if (htab
->relbrlt
!= NULL
)
10193 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10194 else if (info
->emitrelocations
)
10196 htab
->brlt
->reloc_count
+= 1;
10197 htab
->brlt
->flags
|= SEC_RELOC
;
10201 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10202 off
= (br_entry
->offset
10203 + htab
->brlt
->output_offset
10204 + htab
->brlt
->output_section
->vma
10205 - elf_gp (htab
->brlt
->output_section
->owner
)
10206 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10208 if (info
->emitrelocations
)
10210 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10211 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10214 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10217 if (PPC_HA (off
) != 0)
10223 if (PPC_HA (off
) != 0)
10226 if (PPC_HA (r2off
) != 0)
10230 else if (info
->emitrelocations
)
10232 stub_entry
->stub_sec
->reloc_count
+= 1;
10233 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10237 stub_entry
->stub_sec
->size
+= size
;
10241 /* Set up various things so that we can make a list of input sections
10242 for each output section included in the link. Returns -1 on error,
10243 0 when no stubs will be needed, and 1 on success. */
10246 ppc64_elf_setup_section_lists
10247 (struct bfd_link_info
*info
,
10248 asection
*(*add_stub_section
) (const char *, asection
*),
10249 void (*layout_sections_again
) (void))
10252 int top_id
, top_index
, id
;
10254 asection
**input_list
;
10256 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10260 /* Stash our params away. */
10261 htab
->add_stub_section
= add_stub_section
;
10262 htab
->layout_sections_again
= layout_sections_again
;
10264 if (htab
->brlt
== NULL
)
10267 /* Find the top input section id. */
10268 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10270 input_bfd
= input_bfd
->link_next
)
10272 for (section
= input_bfd
->sections
;
10274 section
= section
->next
)
10276 if (top_id
< section
->id
)
10277 top_id
= section
->id
;
10281 htab
->top_id
= top_id
;
10282 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10283 htab
->stub_group
= bfd_zmalloc (amt
);
10284 if (htab
->stub_group
== NULL
)
10287 /* Set toc_off for com, und, abs and ind sections. */
10288 for (id
= 0; id
< 3; id
++)
10289 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10291 /* We can't use output_bfd->section_count here to find the top output
10292 section index as some sections may have been removed, and
10293 strip_excluded_output_sections doesn't renumber the indices. */
10294 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10296 section
= section
->next
)
10298 if (top_index
< section
->index
)
10299 top_index
= section
->index
;
10302 htab
->top_index
= top_index
;
10303 amt
= sizeof (asection
*) * (top_index
+ 1);
10304 input_list
= bfd_zmalloc (amt
);
10305 htab
->input_list
= input_list
;
10306 if (input_list
== NULL
)
10312 /* Set up for first pass at multitoc partitioning. */
10315 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10317 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10319 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10320 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10321 htab
->toc_bfd
= NULL
;
10322 htab
->toc_first_sec
= NULL
;
10325 /* The linker repeatedly calls this function for each TOC input section
10326 and linker generated GOT section. Group input bfds such that the toc
10327 within a group is less than 64k in size. */
10330 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10332 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10333 bfd_vma addr
, off
, limit
;
10338 if (!htab
->second_toc_pass
)
10340 /* Keep track of the first .toc or .got section for this input bfd. */
10341 if (htab
->toc_bfd
!= isec
->owner
)
10343 htab
->toc_bfd
= isec
->owner
;
10344 htab
->toc_first_sec
= isec
;
10347 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10348 off
= addr
- htab
->toc_curr
;
10349 limit
= 0x80008000;
10350 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10352 if (off
+ isec
->size
> limit
)
10354 addr
= (htab
->toc_first_sec
->output_offset
10355 + htab
->toc_first_sec
->output_section
->vma
);
10356 htab
->toc_curr
= addr
;
10359 /* toc_curr is the base address of this toc group. Set elf_gp
10360 for the input section to be the offset relative to the
10361 output toc base plus 0x8000. Making the input elf_gp an
10362 offset allows us to move the toc as a whole without
10363 recalculating input elf_gp. */
10364 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10365 off
+= TOC_BASE_OFF
;
10367 /* Die if someone uses a linker script that doesn't keep input
10368 file .toc and .got together. */
10369 if (elf_gp (isec
->owner
) != 0
10370 && elf_gp (isec
->owner
) != off
)
10373 elf_gp (isec
->owner
) = off
;
10377 /* During the second pass toc_first_sec points to the start of
10378 a toc group, and toc_curr is used to track the old elf_gp.
10379 We use toc_bfd to ensure we only look at each bfd once. */
10380 if (htab
->toc_bfd
== isec
->owner
)
10382 htab
->toc_bfd
= isec
->owner
;
10384 if (htab
->toc_first_sec
== NULL
10385 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10387 htab
->toc_curr
= elf_gp (isec
->owner
);
10388 htab
->toc_first_sec
= isec
;
10390 addr
= (htab
->toc_first_sec
->output_offset
10391 + htab
->toc_first_sec
->output_section
->vma
);
10392 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10393 elf_gp (isec
->owner
) = off
;
10398 /* Called via elf_link_hash_traverse to merge GOT entries for global
10402 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10404 if (h
->root
.type
== bfd_link_hash_indirect
)
10407 merge_got_entries (&h
->got
.glist
);
10412 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10416 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10418 struct got_entry
*gent
;
10420 if (h
->root
.type
== bfd_link_hash_indirect
)
10423 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10424 if (!gent
->is_indirect
)
10425 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10429 /* Called on the first multitoc pass after the last call to
10430 ppc64_elf_next_toc_section. This function removes duplicate GOT
10434 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10436 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10437 struct bfd
*ibfd
, *ibfd2
;
10438 bfd_boolean done_something
;
10440 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10442 if (!htab
->do_multi_toc
)
10445 /* Merge global sym got entries within a toc group. */
10446 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10448 /* And tlsld_got. */
10449 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10451 struct got_entry
*ent
, *ent2
;
10453 if (!is_ppc64_elf (ibfd
))
10456 ent
= ppc64_tlsld_got (ibfd
);
10457 if (!ent
->is_indirect
10458 && ent
->got
.offset
!= (bfd_vma
) -1)
10460 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10462 if (!is_ppc64_elf (ibfd2
))
10465 ent2
= ppc64_tlsld_got (ibfd2
);
10466 if (!ent2
->is_indirect
10467 && ent2
->got
.offset
!= (bfd_vma
) -1
10468 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10470 ent2
->is_indirect
= TRUE
;
10471 ent2
->got
.ent
= ent
;
10477 /* Zap sizes of got sections. */
10478 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10479 htab
->reliplt
->size
-= htab
->got_reli_size
;
10480 htab
->got_reli_size
= 0;
10482 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10484 asection
*got
, *relgot
;
10486 if (!is_ppc64_elf (ibfd
))
10489 got
= ppc64_elf_tdata (ibfd
)->got
;
10492 got
->rawsize
= got
->size
;
10494 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10495 relgot
->rawsize
= relgot
->size
;
10500 /* Now reallocate the got, local syms first. We don't need to
10501 allocate section contents again since we never increase size. */
10502 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10504 struct got_entry
**lgot_ents
;
10505 struct got_entry
**end_lgot_ents
;
10506 struct plt_entry
**local_plt
;
10507 struct plt_entry
**end_local_plt
;
10508 unsigned char *lgot_masks
;
10509 bfd_size_type locsymcount
;
10510 Elf_Internal_Shdr
*symtab_hdr
;
10511 asection
*s
, *srel
;
10513 if (!is_ppc64_elf (ibfd
))
10516 lgot_ents
= elf_local_got_ents (ibfd
);
10520 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10521 locsymcount
= symtab_hdr
->sh_info
;
10522 end_lgot_ents
= lgot_ents
+ locsymcount
;
10523 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10524 end_local_plt
= local_plt
+ locsymcount
;
10525 lgot_masks
= (unsigned char *) end_local_plt
;
10526 s
= ppc64_elf_tdata (ibfd
)->got
;
10527 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10528 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10530 struct got_entry
*ent
;
10532 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10534 unsigned int num
= 1;
10535 ent
->got
.offset
= s
->size
;
10536 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10538 s
->size
+= num
* 8;
10540 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10541 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10543 htab
->reliplt
->size
10544 += num
* sizeof (Elf64_External_Rela
);
10545 htab
->got_reli_size
10546 += num
* sizeof (Elf64_External_Rela
);
10552 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10554 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10556 struct got_entry
*ent
;
10558 if (!is_ppc64_elf (ibfd
))
10561 ent
= ppc64_tlsld_got (ibfd
);
10562 if (!ent
->is_indirect
10563 && ent
->got
.offset
!= (bfd_vma
) -1)
10565 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10566 ent
->got
.offset
= s
->size
;
10570 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10571 srel
->size
+= sizeof (Elf64_External_Rela
);
10576 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10577 if (!done_something
)
10578 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10582 if (!is_ppc64_elf (ibfd
))
10585 got
= ppc64_elf_tdata (ibfd
)->got
;
10588 done_something
= got
->rawsize
!= got
->size
;
10589 if (done_something
)
10594 if (done_something
)
10595 (*htab
->layout_sections_again
) ();
10597 /* Set up for second pass over toc sections to recalculate elf_gp
10598 on input sections. */
10599 htab
->toc_bfd
= NULL
;
10600 htab
->toc_first_sec
= NULL
;
10601 htab
->second_toc_pass
= TRUE
;
10602 return done_something
;
10605 /* Called after second pass of multitoc partitioning. */
10608 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10610 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10612 /* After the second pass, toc_curr tracks the TOC offset used
10613 for code sections below in ppc64_elf_next_input_section. */
10614 htab
->toc_curr
= TOC_BASE_OFF
;
10617 /* No toc references were found in ISEC. If the code in ISEC makes no
10618 calls, then there's no need to use toc adjusting stubs when branching
10619 into ISEC. Actually, indirect calls from ISEC are OK as they will
10620 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10621 needed, and 2 if a cyclical call-graph was found but no other reason
10622 for a stub was detected. If called from the top level, a return of
10623 2 means the same as a return of 0. */
10626 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10630 /* Mark this section as checked. */
10631 isec
->call_check_done
= 1;
10633 /* We know none of our code bearing sections will need toc stubs. */
10634 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10637 if (isec
->size
== 0)
10640 if (isec
->output_section
== NULL
)
10644 if (isec
->reloc_count
!= 0)
10646 Elf_Internal_Rela
*relstart
, *rel
;
10647 Elf_Internal_Sym
*local_syms
;
10648 struct ppc_link_hash_table
*htab
;
10650 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10651 info
->keep_memory
);
10652 if (relstart
== NULL
)
10655 /* Look for branches to outside of this section. */
10657 htab
= ppc_hash_table (info
);
10661 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10663 enum elf_ppc64_reloc_type r_type
;
10664 unsigned long r_symndx
;
10665 struct elf_link_hash_entry
*h
;
10666 struct ppc_link_hash_entry
*eh
;
10667 Elf_Internal_Sym
*sym
;
10669 struct _opd_sec_data
*opd
;
10673 r_type
= ELF64_R_TYPE (rel
->r_info
);
10674 if (r_type
!= R_PPC64_REL24
10675 && r_type
!= R_PPC64_REL14
10676 && r_type
!= R_PPC64_REL14_BRTAKEN
10677 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10680 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10681 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10688 /* Calls to dynamic lib functions go through a plt call stub
10690 eh
= (struct ppc_link_hash_entry
*) h
;
10692 && (eh
->elf
.plt
.plist
!= NULL
10694 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10700 if (sym_sec
== NULL
)
10701 /* Ignore other undefined symbols. */
10704 /* Assume branches to other sections not included in the
10705 link need stubs too, to cover -R and absolute syms. */
10706 if (sym_sec
->output_section
== NULL
)
10713 sym_value
= sym
->st_value
;
10716 if (h
->root
.type
!= bfd_link_hash_defined
10717 && h
->root
.type
!= bfd_link_hash_defweak
)
10719 sym_value
= h
->root
.u
.def
.value
;
10721 sym_value
+= rel
->r_addend
;
10723 /* If this branch reloc uses an opd sym, find the code section. */
10724 opd
= get_opd_info (sym_sec
);
10727 if (h
== NULL
&& opd
->adjust
!= NULL
)
10731 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10733 /* Assume deleted functions won't ever be called. */
10735 sym_value
+= adjust
;
10738 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10739 if (dest
== (bfd_vma
) -1)
10744 + sym_sec
->output_offset
10745 + sym_sec
->output_section
->vma
);
10747 /* Ignore branch to self. */
10748 if (sym_sec
== isec
)
10751 /* If the called function uses the toc, we need a stub. */
10752 if (sym_sec
->has_toc_reloc
10753 || sym_sec
->makes_toc_func_call
)
10759 /* Assume any branch that needs a long branch stub might in fact
10760 need a plt_branch stub. A plt_branch stub uses r2. */
10761 else if (dest
- (isec
->output_offset
10762 + isec
->output_section
->vma
10763 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10769 /* If calling back to a section in the process of being
10770 tested, we can't say for sure that no toc adjusting stubs
10771 are needed, so don't return zero. */
10772 else if (sym_sec
->call_check_in_progress
)
10775 /* Branches to another section that itself doesn't have any TOC
10776 references are OK. Recursively call ourselves to check. */
10777 else if (!sym_sec
->call_check_done
)
10781 /* Mark current section as indeterminate, so that other
10782 sections that call back to current won't be marked as
10784 isec
->call_check_in_progress
= 1;
10785 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10786 isec
->call_check_in_progress
= 0;
10797 if (local_syms
!= NULL
10798 && (elf_symtab_hdr (isec
->owner
).contents
10799 != (unsigned char *) local_syms
))
10801 if (elf_section_data (isec
)->relocs
!= relstart
)
10806 && isec
->map_head
.s
!= NULL
10807 && (strcmp (isec
->output_section
->name
, ".init") == 0
10808 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10810 if (isec
->map_head
.s
->has_toc_reloc
10811 || isec
->map_head
.s
->makes_toc_func_call
)
10813 else if (!isec
->map_head
.s
->call_check_done
)
10816 isec
->call_check_in_progress
= 1;
10817 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10818 isec
->call_check_in_progress
= 0;
10825 isec
->makes_toc_func_call
= 1;
10830 /* The linker repeatedly calls this function for each input section,
10831 in the order that input sections are linked into output sections.
10832 Build lists of input sections to determine groupings between which
10833 we may insert linker stubs. */
10836 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10838 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10843 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10844 && isec
->output_section
->index
<= htab
->top_index
)
10846 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10847 /* Steal the link_sec pointer for our list. */
10848 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10849 /* This happens to make the list in reverse order,
10850 which is what we want. */
10851 PREV_SEC (isec
) = *list
;
10855 if (htab
->multi_toc_needed
)
10857 /* If a code section has a function that uses the TOC then we need
10858 to use the right TOC (obviously). Also, make sure that .opd gets
10859 the correct TOC value for R_PPC64_TOC relocs that don't have or
10860 can't find their function symbol (shouldn't ever happen now).
10861 Also specially treat .fixup for the linux kernel. .fixup
10862 contains branches, but only back to the function that hit an
10864 if (isec
->has_toc_reloc
10865 || (isec
->flags
& SEC_CODE
) == 0
10866 || strcmp (isec
->name
, ".fixup") == 0)
10868 if (elf_gp (isec
->owner
) != 0)
10869 htab
->toc_curr
= elf_gp (isec
->owner
);
10873 if (!isec
->call_check_done
10874 && toc_adjusting_stub_needed (info
, isec
) < 0)
10876 /* If we make a local call from this section, ie. a branch
10877 without a following nop, then we have no place to put a
10878 toc restoring insn. We must use the same toc group as
10880 Testing makes_toc_func_call actually tests for *any*
10881 calls to functions that need a good toc pointer. A more
10882 precise test would be better, as this one will set
10883 incorrect values for pasted .init/.fini fragments.
10884 (Fixed later in check_pasted_section.) */
10885 if (isec
->makes_toc_func_call
10886 && elf_gp (isec
->owner
) != 0)
10887 htab
->toc_curr
= elf_gp (isec
->owner
);
10891 /* Functions that don't use the TOC can belong in any TOC group.
10892 Use the last TOC base. */
10893 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10897 /* Check that all .init and .fini sections use the same toc, if they
10898 have toc relocs. */
10901 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10903 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10907 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10908 bfd_vma toc_off
= 0;
10911 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10912 if (i
->has_toc_reloc
)
10915 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10916 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10921 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10922 if (i
->makes_toc_func_call
)
10924 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10928 /* Make sure the whole pasted function uses the same toc offset. */
10930 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10931 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10937 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10939 return (check_pasted_section (info
, ".init")
10940 & check_pasted_section (info
, ".fini"));
10943 /* See whether we can group stub sections together. Grouping stub
10944 sections may result in fewer stubs. More importantly, we need to
10945 put all .init* and .fini* stubs at the beginning of the .init or
10946 .fini output sections respectively, because glibc splits the
10947 _init and _fini functions into multiple parts. Putting a stub in
10948 the middle of a function is not a good idea. */
10951 group_sections (struct ppc_link_hash_table
*htab
,
10952 bfd_size_type stub_group_size
,
10953 bfd_boolean stubs_always_before_branch
)
10956 bfd_size_type stub14_group_size
;
10957 bfd_boolean suppress_size_errors
;
10959 suppress_size_errors
= FALSE
;
10960 stub14_group_size
= stub_group_size
;
10961 if (stub_group_size
== 1)
10963 /* Default values. */
10964 if (stubs_always_before_branch
)
10966 stub_group_size
= 0x1e00000;
10967 stub14_group_size
= 0x7800;
10971 stub_group_size
= 0x1c00000;
10972 stub14_group_size
= 0x7000;
10974 suppress_size_errors
= TRUE
;
10977 list
= htab
->input_list
+ htab
->top_index
;
10980 asection
*tail
= *list
;
10981 while (tail
!= NULL
)
10985 bfd_size_type total
;
10986 bfd_boolean big_sec
;
10990 total
= tail
->size
;
10991 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10992 && ppc64_elf_section_data (tail
)->has_14bit_branch
10993 ? stub14_group_size
: stub_group_size
);
10994 if (big_sec
&& !suppress_size_errors
)
10995 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10996 tail
->owner
, tail
);
10997 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10999 while ((prev
= PREV_SEC (curr
)) != NULL
11000 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11001 < (ppc64_elf_section_data (prev
) != NULL
11002 && ppc64_elf_section_data (prev
)->has_14bit_branch
11003 ? stub14_group_size
: stub_group_size
))
11004 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11007 /* OK, the size from the start of CURR to the end is less
11008 than stub_group_size and thus can be handled by one stub
11009 section. (or the tail section is itself larger than
11010 stub_group_size, in which case we may be toast.) We
11011 should really be keeping track of the total size of stubs
11012 added here, as stubs contribute to the final output
11013 section size. That's a little tricky, and this way will
11014 only break if stubs added make the total size more than
11015 2^25, ie. for the default stub_group_size, if stubs total
11016 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11019 prev
= PREV_SEC (tail
);
11020 /* Set up this stub group. */
11021 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11023 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11025 /* But wait, there's more! Input sections up to stub_group_size
11026 bytes before the stub section can be handled by it too.
11027 Don't do this if we have a really large section after the
11028 stubs, as adding more stubs increases the chance that
11029 branches may not reach into the stub section. */
11030 if (!stubs_always_before_branch
&& !big_sec
)
11033 while (prev
!= NULL
11034 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11035 < (ppc64_elf_section_data (prev
) != NULL
11036 && ppc64_elf_section_data (prev
)->has_14bit_branch
11037 ? stub14_group_size
: stub_group_size
))
11038 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11041 prev
= PREV_SEC (tail
);
11042 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11048 while (list
-- != htab
->input_list
);
11049 free (htab
->input_list
);
11053 static const unsigned char glink_eh_frame_cie
[] =
11055 0, 0, 0, 16, /* length. */
11056 0, 0, 0, 0, /* id. */
11057 1, /* CIE version. */
11058 'z', 'R', 0, /* Augmentation string. */
11059 4, /* Code alignment. */
11060 0x78, /* Data alignment. */
11062 1, /* Augmentation size. */
11063 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11064 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11067 /* Stripping output sections is normally done before dynamic section
11068 symbols have been allocated. This function is called later, and
11069 handles cases like htab->brlt which is mapped to its own output
11073 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11075 if (isec
->size
== 0
11076 && isec
->output_section
->size
== 0
11077 && !bfd_section_removed_from_list (info
->output_bfd
,
11078 isec
->output_section
)
11079 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11081 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11082 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11083 info
->output_bfd
->section_count
--;
11087 /* Determine and set the size of the stub section for a final link.
11089 The basic idea here is to examine all the relocations looking for
11090 PC-relative calls to a target that is unreachable with a "bl"
11094 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
,
11095 bfd_boolean plt_static_chain
)
11097 bfd_size_type stub_group_size
;
11098 bfd_boolean stubs_always_before_branch
;
11099 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11104 htab
->plt_static_chain
= plt_static_chain
;
11105 stubs_always_before_branch
= group_size
< 0;
11106 if (group_size
< 0)
11107 stub_group_size
= -group_size
;
11109 stub_group_size
= group_size
;
11111 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11116 unsigned int bfd_indx
;
11117 asection
*stub_sec
;
11119 htab
->stub_iteration
+= 1;
11121 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11123 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
11125 Elf_Internal_Shdr
*symtab_hdr
;
11127 Elf_Internal_Sym
*local_syms
= NULL
;
11129 if (!is_ppc64_elf (input_bfd
))
11132 /* We'll need the symbol table in a second. */
11133 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11134 if (symtab_hdr
->sh_info
== 0)
11137 /* Walk over each section attached to the input bfd. */
11138 for (section
= input_bfd
->sections
;
11140 section
= section
->next
)
11142 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
11144 /* If there aren't any relocs, then there's nothing more
11146 if ((section
->flags
& SEC_RELOC
) == 0
11147 || (section
->flags
& SEC_ALLOC
) == 0
11148 || (section
->flags
& SEC_LOAD
) == 0
11149 || (section
->flags
& SEC_CODE
) == 0
11150 || section
->reloc_count
== 0)
11153 /* If this section is a link-once section that will be
11154 discarded, then don't create any stubs. */
11155 if (section
->output_section
== NULL
11156 || section
->output_section
->owner
!= info
->output_bfd
)
11159 /* Get the relocs. */
11161 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
11162 info
->keep_memory
);
11163 if (internal_relocs
== NULL
)
11164 goto error_ret_free_local
;
11166 /* Now examine each relocation. */
11167 irela
= internal_relocs
;
11168 irelaend
= irela
+ section
->reloc_count
;
11169 for (; irela
< irelaend
; irela
++)
11171 enum elf_ppc64_reloc_type r_type
;
11172 unsigned int r_indx
;
11173 enum ppc_stub_type stub_type
;
11174 struct ppc_stub_hash_entry
*stub_entry
;
11175 asection
*sym_sec
, *code_sec
;
11176 bfd_vma sym_value
, code_value
;
11177 bfd_vma destination
;
11178 bfd_boolean ok_dest
;
11179 struct ppc_link_hash_entry
*hash
;
11180 struct ppc_link_hash_entry
*fdh
;
11181 struct elf_link_hash_entry
*h
;
11182 Elf_Internal_Sym
*sym
;
11184 const asection
*id_sec
;
11185 struct _opd_sec_data
*opd
;
11186 struct plt_entry
*plt_ent
;
11188 r_type
= ELF64_R_TYPE (irela
->r_info
);
11189 r_indx
= ELF64_R_SYM (irela
->r_info
);
11191 if (r_type
>= R_PPC64_max
)
11193 bfd_set_error (bfd_error_bad_value
);
11194 goto error_ret_free_internal
;
11197 /* Only look for stubs on branch instructions. */
11198 if (r_type
!= R_PPC64_REL24
11199 && r_type
!= R_PPC64_REL14
11200 && r_type
!= R_PPC64_REL14_BRTAKEN
11201 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11204 /* Now determine the call target, its name, value,
11206 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
11207 r_indx
, input_bfd
))
11208 goto error_ret_free_internal
;
11209 hash
= (struct ppc_link_hash_entry
*) h
;
11216 sym_value
= sym
->st_value
;
11219 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
11220 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
11222 sym_value
= hash
->elf
.root
.u
.def
.value
;
11223 if (sym_sec
->output_section
!= NULL
)
11226 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
11227 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
11229 /* Recognise an old ABI func code entry sym, and
11230 use the func descriptor sym instead if it is
11232 if (hash
->elf
.root
.root
.string
[0] == '.'
11233 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
11235 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
11236 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
11238 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
11239 sym_value
= fdh
->elf
.root
.u
.def
.value
;
11240 if (sym_sec
->output_section
!= NULL
)
11249 bfd_set_error (bfd_error_bad_value
);
11250 goto error_ret_free_internal
;
11256 sym_value
+= irela
->r_addend
;
11257 destination
= (sym_value
11258 + sym_sec
->output_offset
11259 + sym_sec
->output_section
->vma
);
11262 code_sec
= sym_sec
;
11263 code_value
= sym_value
;
11264 opd
= get_opd_info (sym_sec
);
11269 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11271 long adjust
= opd
->adjust
[sym_value
/ 8];
11274 code_value
+= adjust
;
11275 sym_value
+= adjust
;
11277 dest
= opd_entry_value (sym_sec
, sym_value
,
11278 &code_sec
, &code_value
);
11279 if (dest
!= (bfd_vma
) -1)
11281 destination
= dest
;
11284 /* Fixup old ABI sym to point at code
11286 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11287 hash
->elf
.root
.u
.def
.section
= code_sec
;
11288 hash
->elf
.root
.u
.def
.value
= code_value
;
11293 /* Determine what (if any) linker stub is needed. */
11295 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11296 &plt_ent
, destination
);
11298 if (stub_type
!= ppc_stub_plt_call
)
11300 /* Check whether we need a TOC adjusting stub.
11301 Since the linker pastes together pieces from
11302 different object files when creating the
11303 _init and _fini functions, it may be that a
11304 call to what looks like a local sym is in
11305 fact a call needing a TOC adjustment. */
11306 if (code_sec
!= NULL
11307 && code_sec
->output_section
!= NULL
11308 && (htab
->stub_group
[code_sec
->id
].toc_off
11309 != htab
->stub_group
[section
->id
].toc_off
)
11310 && (code_sec
->has_toc_reloc
11311 || code_sec
->makes_toc_func_call
))
11312 stub_type
= ppc_stub_long_branch_r2off
;
11315 if (stub_type
== ppc_stub_none
)
11318 /* __tls_get_addr calls might be eliminated. */
11319 if (stub_type
!= ppc_stub_plt_call
11321 && (hash
== htab
->tls_get_addr
11322 || hash
== htab
->tls_get_addr_fd
)
11323 && section
->has_tls_reloc
11324 && irela
!= internal_relocs
)
11326 /* Get tls info. */
11327 unsigned char *tls_mask
;
11329 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11330 irela
- 1, input_bfd
))
11331 goto error_ret_free_internal
;
11332 if (*tls_mask
!= 0)
11336 if (stub_type
== ppc_stub_plt_call
11337 && irela
+ 1 < irelaend
11338 && irela
[1].r_offset
== irela
->r_offset
+ 4
11339 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
11340 && !tocsave_find (htab
, INSERT
,
11341 &local_syms
, irela
+ 1, input_bfd
))
11342 goto error_ret_free_internal
;
11344 /* Support for grouping stub sections. */
11345 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11347 /* Get the name of this stub. */
11348 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11350 goto error_ret_free_internal
;
11352 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11353 stub_name
, FALSE
, FALSE
);
11354 if (stub_entry
!= NULL
)
11356 /* The proper stub has already been created. */
11361 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
11362 if (stub_entry
== NULL
)
11365 error_ret_free_internal
:
11366 if (elf_section_data (section
)->relocs
== NULL
)
11367 free (internal_relocs
);
11368 error_ret_free_local
:
11369 if (local_syms
!= NULL
11370 && (symtab_hdr
->contents
11371 != (unsigned char *) local_syms
))
11376 stub_entry
->stub_type
= stub_type
;
11377 if (stub_type
!= ppc_stub_plt_call
)
11379 stub_entry
->target_value
= code_value
;
11380 stub_entry
->target_section
= code_sec
;
11384 stub_entry
->target_value
= sym_value
;
11385 stub_entry
->target_section
= sym_sec
;
11387 stub_entry
->h
= hash
;
11388 stub_entry
->plt_ent
= plt_ent
;
11389 stub_entry
->addend
= irela
->r_addend
;
11391 if (stub_entry
->h
!= NULL
)
11392 htab
->stub_globals
+= 1;
11395 /* We're done with the internal relocs, free them. */
11396 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11397 free (internal_relocs
);
11400 if (local_syms
!= NULL
11401 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11403 if (!info
->keep_memory
)
11406 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11410 /* We may have added some stubs. Find out the new size of the
11412 for (stub_sec
= htab
->stub_bfd
->sections
;
11414 stub_sec
= stub_sec
->next
)
11415 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11417 stub_sec
->rawsize
= stub_sec
->size
;
11418 stub_sec
->size
= 0;
11419 stub_sec
->reloc_count
= 0;
11420 stub_sec
->flags
&= ~SEC_RELOC
;
11423 htab
->brlt
->size
= 0;
11424 htab
->brlt
->reloc_count
= 0;
11425 htab
->brlt
->flags
&= ~SEC_RELOC
;
11426 if (htab
->relbrlt
!= NULL
)
11427 htab
->relbrlt
->size
= 0;
11429 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11431 if (info
->emitrelocations
11432 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11434 htab
->glink
->reloc_count
= 1;
11435 htab
->glink
->flags
|= SEC_RELOC
;
11438 if (htab
->glink_eh_frame
!= NULL
11439 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
11440 && (htab
->glink_eh_frame
->flags
& SEC_EXCLUDE
) == 0)
11442 bfd_size_type size
= 0;
11444 for (stub_sec
= htab
->stub_bfd
->sections
;
11446 stub_sec
= stub_sec
->next
)
11447 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11449 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11452 size
+= sizeof (glink_eh_frame_cie
);
11453 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
11454 htab
->glink_eh_frame
->size
= size
;
11457 for (stub_sec
= htab
->stub_bfd
->sections
;
11459 stub_sec
= stub_sec
->next
)
11460 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11461 && stub_sec
->rawsize
!= stub_sec
->size
)
11464 /* Exit from this loop when no stubs have been added, and no stubs
11465 have changed size. */
11466 if (stub_sec
== NULL
11467 && (htab
->glink_eh_frame
== NULL
11468 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
11471 /* Ask the linker to do its stuff. */
11472 (*htab
->layout_sections_again
) ();
11475 maybe_strip_output (info
, htab
->brlt
);
11476 if (htab
->glink_eh_frame
!= NULL
)
11477 maybe_strip_output (info
, htab
->glink_eh_frame
);
11482 /* Called after we have determined section placement. If sections
11483 move, we'll be called again. Provide a value for TOCstart. */
11486 ppc64_elf_toc (bfd
*obfd
)
11491 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11492 order. The TOC starts where the first of these sections starts. */
11493 s
= bfd_get_section_by_name (obfd
, ".got");
11494 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11495 s
= bfd_get_section_by_name (obfd
, ".toc");
11496 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11497 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11498 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11499 s
= bfd_get_section_by_name (obfd
, ".plt");
11500 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11502 /* This may happen for
11503 o references to TOC base (SYM@toc / TOC[tc0]) without a
11505 o bad linker script
11506 o --gc-sections and empty TOC sections
11508 FIXME: Warn user? */
11510 /* Look for a likely section. We probably won't even be
11512 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11513 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11515 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11518 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11519 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11520 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11523 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11524 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11528 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11529 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11535 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11540 /* Build all the stubs associated with the current output file.
11541 The stubs are kept in a hash table attached to the main linker
11542 hash table. This function is called via gldelf64ppc_finish. */
11545 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11546 struct bfd_link_info
*info
,
11549 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11550 asection
*stub_sec
;
11552 int stub_sec_count
= 0;
11557 htab
->emit_stub_syms
= emit_stub_syms
;
11559 /* Allocate memory to hold the linker stubs. */
11560 for (stub_sec
= htab
->stub_bfd
->sections
;
11562 stub_sec
= stub_sec
->next
)
11563 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11564 && stub_sec
->size
!= 0)
11566 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11567 if (stub_sec
->contents
== NULL
)
11569 /* We want to check that built size is the same as calculated
11570 size. rawsize is a convenient location to use. */
11571 stub_sec
->rawsize
= stub_sec
->size
;
11572 stub_sec
->size
= 0;
11575 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11580 /* Build the .glink plt call stub. */
11581 if (htab
->emit_stub_syms
)
11583 struct elf_link_hash_entry
*h
;
11584 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11585 TRUE
, FALSE
, FALSE
);
11588 if (h
->root
.type
== bfd_link_hash_new
)
11590 h
->root
.type
= bfd_link_hash_defined
;
11591 h
->root
.u
.def
.section
= htab
->glink
;
11592 h
->root
.u
.def
.value
= 8;
11593 h
->ref_regular
= 1;
11594 h
->def_regular
= 1;
11595 h
->ref_regular_nonweak
= 1;
11596 h
->forced_local
= 1;
11600 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11601 if (info
->emitrelocations
)
11603 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11606 r
->r_offset
= (htab
->glink
->output_offset
11607 + htab
->glink
->output_section
->vma
);
11608 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11609 r
->r_addend
= plt0
;
11611 p
= htab
->glink
->contents
;
11612 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11613 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11615 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11617 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11619 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11621 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11623 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11625 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11627 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11629 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11631 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11633 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11635 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11637 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11639 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11643 /* Build the .glink lazy link call stubs. */
11645 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11649 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11654 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11656 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11659 bfd_put_32 (htab
->glink
->owner
,
11660 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11664 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11667 if (htab
->brlt
->size
!= 0)
11669 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11671 if (htab
->brlt
->contents
== NULL
)
11674 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11676 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11677 htab
->relbrlt
->size
);
11678 if (htab
->relbrlt
->contents
== NULL
)
11682 if (htab
->glink_eh_frame
!= NULL
11683 && htab
->glink_eh_frame
->size
!= 0)
11687 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
11690 htab
->glink_eh_frame
->contents
= p
;
11692 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
11694 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
11695 /* CIE length (rewrite in case little-endian). */
11696 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
11697 p
+= sizeof (glink_eh_frame_cie
);
11699 for (stub_sec
= htab
->stub_bfd
->sections
;
11701 stub_sec
= stub_sec
->next
)
11702 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11705 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
11708 val
= p
- htab
->glink_eh_frame
->contents
;
11709 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11711 /* Offset to stub section. */
11712 val
= (stub_sec
->output_section
->vma
11713 + stub_sec
->output_offset
);
11714 val
-= (htab
->glink_eh_frame
->output_section
->vma
11715 + htab
->glink_eh_frame
->output_offset
);
11716 val
-= p
- htab
->glink_eh_frame
->contents
;
11717 if (val
+ 0x80000000 > 0xffffffff)
11719 info
->callbacks
->einfo
11720 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11724 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11726 /* stub section size. */
11727 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
11729 /* Augmentation. */
11734 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11737 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
11740 val
= p
- htab
->glink_eh_frame
->contents
;
11741 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11743 /* Offset to .glink. */
11744 val
= (htab
->glink
->output_section
->vma
11745 + htab
->glink
->output_offset
11747 val
-= (htab
->glink_eh_frame
->output_section
->vma
11748 + htab
->glink_eh_frame
->output_offset
);
11749 val
-= p
- htab
->glink_eh_frame
->contents
;
11750 if (val
+ 0x80000000 > 0xffffffff)
11752 info
->callbacks
->einfo
11753 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
11754 htab
->glink
->name
);
11757 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
11760 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->rawsize
- 8, p
);
11762 /* Augmentation. */
11765 *p
++ = DW_CFA_advance_loc
+ 1;
11766 *p
++ = DW_CFA_register
;
11769 *p
++ = DW_CFA_advance_loc
+ 4;
11770 *p
++ = DW_CFA_restore_extended
;
11773 htab
->glink_eh_frame
->size
= p
- htab
->glink_eh_frame
->contents
;
11776 /* Build the stubs as directed by the stub hash table. */
11777 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11779 if (htab
->relbrlt
!= NULL
)
11780 htab
->relbrlt
->reloc_count
= 0;
11782 for (stub_sec
= htab
->stub_bfd
->sections
;
11784 stub_sec
= stub_sec
->next
)
11785 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11787 stub_sec_count
+= 1;
11788 if (stub_sec
->rawsize
!= stub_sec
->size
)
11792 if (stub_sec
!= NULL
11793 || htab
->glink
->rawsize
!= htab
->glink
->size
11794 || (htab
->glink_eh_frame
!= NULL
11795 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
11797 htab
->stub_error
= TRUE
;
11798 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
11801 if (htab
->stub_error
)
11806 *stats
= bfd_malloc (500);
11807 if (*stats
== NULL
)
11810 sprintf (*stats
, _("linker stubs in %u group%s\n"
11812 " toc adjust %lu\n"
11813 " long branch %lu\n"
11814 " long toc adj %lu\n"
11817 stub_sec_count
== 1 ? "" : "s",
11818 htab
->stub_count
[ppc_stub_long_branch
- 1],
11819 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11820 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11821 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11822 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11827 /* This function undoes the changes made by add_symbol_adjust. */
11830 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11832 struct ppc_link_hash_entry
*eh
;
11834 if (h
->root
.type
== bfd_link_hash_indirect
)
11837 eh
= (struct ppc_link_hash_entry
*) h
;
11838 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11841 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11846 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11848 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11851 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11854 /* What to do when ld finds relocations against symbols defined in
11855 discarded sections. */
11857 static unsigned int
11858 ppc64_elf_action_discarded (asection
*sec
)
11860 if (strcmp (".opd", sec
->name
) == 0)
11863 if (strcmp (".toc", sec
->name
) == 0)
11866 if (strcmp (".toc1", sec
->name
) == 0)
11869 return _bfd_elf_default_action_discarded (sec
);
11872 /* The RELOCATE_SECTION function is called by the ELF backend linker
11873 to handle the relocations for a section.
11875 The relocs are always passed as Rela structures; if the section
11876 actually uses Rel structures, the r_addend field will always be
11879 This function is responsible for adjust the section contents as
11880 necessary, and (if using Rela relocs and generating a
11881 relocatable output file) adjusting the reloc addend as
11884 This function does not have to worry about setting the reloc
11885 address or the reloc symbol index.
11887 LOCAL_SYMS is a pointer to the swapped in local symbols.
11889 LOCAL_SECTIONS is an array giving the section in the input file
11890 corresponding to the st_shndx field of each local symbol.
11892 The global hash table entry for the global symbols can be found
11893 via elf_sym_hashes (input_bfd).
11895 When generating relocatable output, this function must handle
11896 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11897 going to be the section symbol corresponding to the output
11898 section, which means that the addend must be adjusted
11902 ppc64_elf_relocate_section (bfd
*output_bfd
,
11903 struct bfd_link_info
*info
,
11905 asection
*input_section
,
11906 bfd_byte
*contents
,
11907 Elf_Internal_Rela
*relocs
,
11908 Elf_Internal_Sym
*local_syms
,
11909 asection
**local_sections
)
11911 struct ppc_link_hash_table
*htab
;
11912 Elf_Internal_Shdr
*symtab_hdr
;
11913 struct elf_link_hash_entry
**sym_hashes
;
11914 Elf_Internal_Rela
*rel
;
11915 Elf_Internal_Rela
*relend
;
11916 Elf_Internal_Rela outrel
;
11918 struct got_entry
**local_got_ents
;
11920 bfd_boolean ret
= TRUE
;
11921 bfd_boolean is_opd
;
11922 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11923 bfd_boolean is_power4
= FALSE
;
11924 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11926 /* Initialize howto table if needed. */
11927 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11930 htab
= ppc_hash_table (info
);
11934 /* Don't relocate stub sections. */
11935 if (input_section
->owner
== htab
->stub_bfd
)
11938 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11940 local_got_ents
= elf_local_got_ents (input_bfd
);
11941 TOCstart
= elf_gp (output_bfd
);
11942 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11943 sym_hashes
= elf_sym_hashes (input_bfd
);
11944 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11947 relend
= relocs
+ input_section
->reloc_count
;
11948 for (; rel
< relend
; rel
++)
11950 enum elf_ppc64_reloc_type r_type
;
11951 bfd_vma addend
, orig_addend
;
11952 bfd_reloc_status_type r
;
11953 Elf_Internal_Sym
*sym
;
11955 struct elf_link_hash_entry
*h_elf
;
11956 struct ppc_link_hash_entry
*h
;
11957 struct ppc_link_hash_entry
*fdh
;
11958 const char *sym_name
;
11959 unsigned long r_symndx
, toc_symndx
;
11960 bfd_vma toc_addend
;
11961 unsigned char tls_mask
, tls_gd
, tls_type
;
11962 unsigned char sym_type
;
11963 bfd_vma relocation
;
11964 bfd_boolean unresolved_reloc
;
11965 bfd_boolean warned
;
11968 struct ppc_stub_hash_entry
*stub_entry
;
11969 bfd_vma max_br_offset
;
11972 r_type
= ELF64_R_TYPE (rel
->r_info
);
11973 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11975 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11976 symbol of the previous ADDR64 reloc. The symbol gives us the
11977 proper TOC base to use. */
11978 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11980 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11982 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11988 unresolved_reloc
= FALSE
;
11990 orig_addend
= rel
->r_addend
;
11992 if (r_symndx
< symtab_hdr
->sh_info
)
11994 /* It's a local symbol. */
11995 struct _opd_sec_data
*opd
;
11997 sym
= local_syms
+ r_symndx
;
11998 sec
= local_sections
[r_symndx
];
11999 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
12000 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
12001 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
12002 opd
= get_opd_info (sec
);
12003 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
12005 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
12010 /* If this is a relocation against the opd section sym
12011 and we have edited .opd, adjust the reloc addend so
12012 that ld -r and ld --emit-relocs output is correct.
12013 If it is a reloc against some other .opd symbol,
12014 then the symbol value will be adjusted later. */
12015 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
12016 rel
->r_addend
+= adjust
;
12018 relocation
+= adjust
;
12024 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
12025 r_symndx
, symtab_hdr
, sym_hashes
,
12026 h_elf
, sec
, relocation
,
12027 unresolved_reloc
, warned
);
12028 sym_name
= h_elf
->root
.root
.string
;
12029 sym_type
= h_elf
->type
;
12031 h
= (struct ppc_link_hash_entry
*) h_elf
;
12033 if (sec
!= NULL
&& elf_discarded_section (sec
))
12034 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
12036 ppc64_elf_howto_table
[r_type
],
12039 if (info
->relocatable
)
12042 /* TLS optimizations. Replace instruction sequences and relocs
12043 based on information we collected in tls_optimize. We edit
12044 RELOCS so that --emit-relocs will output something sensible
12045 for the final instruction stream. */
12050 tls_mask
= h
->tls_mask
;
12051 else if (local_got_ents
!= NULL
)
12053 struct plt_entry
**local_plt
= (struct plt_entry
**)
12054 (local_got_ents
+ symtab_hdr
->sh_info
);
12055 unsigned char *lgot_masks
= (unsigned char *)
12056 (local_plt
+ symtab_hdr
->sh_info
);
12057 tls_mask
= lgot_masks
[r_symndx
];
12060 && (r_type
== R_PPC64_TLS
12061 || r_type
== R_PPC64_TLSGD
12062 || r_type
== R_PPC64_TLSLD
))
12064 /* Check for toc tls entries. */
12065 unsigned char *toc_tls
;
12067 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12068 &local_syms
, rel
, input_bfd
))
12072 tls_mask
= *toc_tls
;
12075 /* Check that tls relocs are used with tls syms, and non-tls
12076 relocs are used with non-tls syms. */
12077 if (r_symndx
!= STN_UNDEF
12078 && r_type
!= R_PPC64_NONE
12080 || h
->elf
.root
.type
== bfd_link_hash_defined
12081 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
12082 && (IS_PPC64_TLS_RELOC (r_type
)
12083 != (sym_type
== STT_TLS
12084 || (sym_type
== STT_SECTION
12085 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
12088 && (r_type
== R_PPC64_TLS
12089 || r_type
== R_PPC64_TLSGD
12090 || r_type
== R_PPC64_TLSLD
))
12091 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12094 info
->callbacks
->einfo
12095 (!IS_PPC64_TLS_RELOC (r_type
)
12096 ? _("%P: %H: %s used with TLS symbol %s\n")
12097 : _("%P: %H: %s used with non-TLS symbol %s\n"),
12098 input_bfd
, input_section
, rel
->r_offset
,
12099 ppc64_elf_howto_table
[r_type
]->name
,
12103 /* Ensure reloc mapping code below stays sane. */
12104 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
12105 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
12106 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
12107 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
12108 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
12109 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
12110 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
12111 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
12112 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
12113 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
12121 case R_PPC64_LO_DS_OPT
:
12122 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12123 if ((insn
& (0x3f << 26)) != 58u << 26)
12125 insn
+= (14u << 26) - (58u << 26);
12126 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12127 r_type
= R_PPC64_TOC16_LO
;
12128 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12131 case R_PPC64_TOC16
:
12132 case R_PPC64_TOC16_LO
:
12133 case R_PPC64_TOC16_DS
:
12134 case R_PPC64_TOC16_LO_DS
:
12136 /* Check for toc tls entries. */
12137 unsigned char *toc_tls
;
12140 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12141 &local_syms
, rel
, input_bfd
);
12147 tls_mask
= *toc_tls
;
12148 if (r_type
== R_PPC64_TOC16_DS
12149 || r_type
== R_PPC64_TOC16_LO_DS
)
12152 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
12157 /* If we found a GD reloc pair, then we might be
12158 doing a GD->IE transition. */
12161 tls_gd
= TLS_TPRELGD
;
12162 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12165 else if (retval
== 3)
12167 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12175 case R_PPC64_GOT_TPREL16_HI
:
12176 case R_PPC64_GOT_TPREL16_HA
:
12178 && (tls_mask
& TLS_TPREL
) == 0)
12180 rel
->r_offset
-= d_offset
;
12181 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12182 r_type
= R_PPC64_NONE
;
12183 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12187 case R_PPC64_GOT_TPREL16_DS
:
12188 case R_PPC64_GOT_TPREL16_LO_DS
:
12190 && (tls_mask
& TLS_TPREL
) == 0)
12193 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12195 insn
|= 0x3c0d0000; /* addis 0,13,0 */
12196 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12197 r_type
= R_PPC64_TPREL16_HA
;
12198 if (toc_symndx
!= 0)
12200 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12201 rel
->r_addend
= toc_addend
;
12202 /* We changed the symbol. Start over in order to
12203 get h, sym, sec etc. right. */
12208 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12214 && (tls_mask
& TLS_TPREL
) == 0)
12216 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
12217 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
12220 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12221 /* Was PPC64_TLS which sits on insn boundary, now
12222 PPC64_TPREL16_LO which is at low-order half-word. */
12223 rel
->r_offset
+= d_offset
;
12224 r_type
= R_PPC64_TPREL16_LO
;
12225 if (toc_symndx
!= 0)
12227 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12228 rel
->r_addend
= toc_addend
;
12229 /* We changed the symbol. Start over in order to
12230 get h, sym, sec etc. right. */
12235 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12239 case R_PPC64_GOT_TLSGD16_HI
:
12240 case R_PPC64_GOT_TLSGD16_HA
:
12241 tls_gd
= TLS_TPRELGD
;
12242 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12246 case R_PPC64_GOT_TLSLD16_HI
:
12247 case R_PPC64_GOT_TLSLD16_HA
:
12248 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12251 if ((tls_mask
& tls_gd
) != 0)
12252 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12253 + R_PPC64_GOT_TPREL16_DS
);
12256 rel
->r_offset
-= d_offset
;
12257 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12258 r_type
= R_PPC64_NONE
;
12260 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12264 case R_PPC64_GOT_TLSGD16
:
12265 case R_PPC64_GOT_TLSGD16_LO
:
12266 tls_gd
= TLS_TPRELGD
;
12267 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12271 case R_PPC64_GOT_TLSLD16
:
12272 case R_PPC64_GOT_TLSLD16_LO
:
12273 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12275 unsigned int insn1
, insn2
, insn3
;
12279 offset
= (bfd_vma
) -1;
12280 /* If not using the newer R_PPC64_TLSGD/LD to mark
12281 __tls_get_addr calls, we must trust that the call
12282 stays with its arg setup insns, ie. that the next
12283 reloc is the __tls_get_addr call associated with
12284 the current reloc. Edit both insns. */
12285 if (input_section
->has_tls_get_addr_call
12286 && rel
+ 1 < relend
12287 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
12288 htab
->tls_get_addr
,
12289 htab
->tls_get_addr_fd
))
12290 offset
= rel
[1].r_offset
;
12291 if ((tls_mask
& tls_gd
) != 0)
12294 insn1
= bfd_get_32 (output_bfd
,
12295 contents
+ rel
->r_offset
- d_offset
);
12296 insn1
&= (1 << 26) - (1 << 2);
12297 insn1
|= 58 << 26; /* ld */
12298 insn2
= 0x7c636a14; /* add 3,3,13 */
12299 if (offset
!= (bfd_vma
) -1)
12300 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12301 if ((tls_mask
& TLS_EXPLICIT
) == 0)
12302 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12303 + R_PPC64_GOT_TPREL16_DS
);
12305 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
12306 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12311 insn1
= 0x3c6d0000; /* addis 3,13,0 */
12312 insn2
= 0x38630000; /* addi 3,3,0 */
12315 /* Was an LD reloc. */
12317 sec
= local_sections
[toc_symndx
];
12319 r_symndx
< symtab_hdr
->sh_info
;
12321 if (local_sections
[r_symndx
] == sec
)
12323 if (r_symndx
>= symtab_hdr
->sh_info
)
12324 r_symndx
= STN_UNDEF
;
12325 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12326 if (r_symndx
!= STN_UNDEF
)
12327 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12328 + sec
->output_offset
12329 + sec
->output_section
->vma
);
12331 else if (toc_symndx
!= 0)
12333 r_symndx
= toc_symndx
;
12334 rel
->r_addend
= toc_addend
;
12336 r_type
= R_PPC64_TPREL16_HA
;
12337 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12338 if (offset
!= (bfd_vma
) -1)
12340 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12341 R_PPC64_TPREL16_LO
);
12342 rel
[1].r_offset
= offset
+ d_offset
;
12343 rel
[1].r_addend
= rel
->r_addend
;
12346 bfd_put_32 (output_bfd
, insn1
,
12347 contents
+ rel
->r_offset
- d_offset
);
12348 if (offset
!= (bfd_vma
) -1)
12350 insn3
= bfd_get_32 (output_bfd
,
12351 contents
+ offset
+ 4);
12353 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12355 rel
[1].r_offset
+= 4;
12356 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12359 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12361 if ((tls_mask
& tls_gd
) == 0
12362 && (tls_gd
== 0 || toc_symndx
!= 0))
12364 /* We changed the symbol. Start over in order
12365 to get h, sym, sec etc. right. */
12372 case R_PPC64_TLSGD
:
12373 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12375 unsigned int insn2
, insn3
;
12376 bfd_vma offset
= rel
->r_offset
;
12378 if ((tls_mask
& TLS_TPRELGD
) != 0)
12381 r_type
= R_PPC64_NONE
;
12382 insn2
= 0x7c636a14; /* add 3,3,13 */
12387 if (toc_symndx
!= 0)
12389 r_symndx
= toc_symndx
;
12390 rel
->r_addend
= toc_addend
;
12392 r_type
= R_PPC64_TPREL16_LO
;
12393 rel
->r_offset
= offset
+ d_offset
;
12394 insn2
= 0x38630000; /* addi 3,3,0 */
12396 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12397 /* Zap the reloc on the _tls_get_addr call too. */
12398 BFD_ASSERT (offset
== rel
[1].r_offset
);
12399 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12400 insn3
= bfd_get_32 (output_bfd
,
12401 contents
+ offset
+ 4);
12403 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12405 rel
->r_offset
+= 4;
12406 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12409 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12410 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12418 case R_PPC64_TLSLD
:
12419 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12421 unsigned int insn2
, insn3
;
12422 bfd_vma offset
= rel
->r_offset
;
12425 sec
= local_sections
[toc_symndx
];
12427 r_symndx
< symtab_hdr
->sh_info
;
12429 if (local_sections
[r_symndx
] == sec
)
12431 if (r_symndx
>= symtab_hdr
->sh_info
)
12432 r_symndx
= STN_UNDEF
;
12433 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12434 if (r_symndx
!= STN_UNDEF
)
12435 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12436 + sec
->output_offset
12437 + sec
->output_section
->vma
);
12439 r_type
= R_PPC64_TPREL16_LO
;
12440 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12441 rel
->r_offset
= offset
+ d_offset
;
12442 /* Zap the reloc on the _tls_get_addr call too. */
12443 BFD_ASSERT (offset
== rel
[1].r_offset
);
12444 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12445 insn2
= 0x38630000; /* addi 3,3,0 */
12446 insn3
= bfd_get_32 (output_bfd
,
12447 contents
+ offset
+ 4);
12449 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12451 rel
->r_offset
+= 4;
12452 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12455 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12461 case R_PPC64_DTPMOD64
:
12462 if (rel
+ 1 < relend
12463 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12464 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12466 if ((tls_mask
& TLS_GD
) == 0)
12468 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12469 if ((tls_mask
& TLS_TPRELGD
) != 0)
12470 r_type
= R_PPC64_TPREL64
;
12473 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12474 r_type
= R_PPC64_NONE
;
12476 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12481 if ((tls_mask
& TLS_LD
) == 0)
12483 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12484 r_type
= R_PPC64_NONE
;
12485 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12490 case R_PPC64_TPREL64
:
12491 if ((tls_mask
& TLS_TPREL
) == 0)
12493 r_type
= R_PPC64_NONE
;
12494 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12499 /* Handle other relocations that tweak non-addend part of insn. */
12501 max_br_offset
= 1 << 25;
12502 addend
= rel
->r_addend
;
12508 case R_PPC64_TOCSAVE
:
12509 if (relocation
+ addend
== (rel
->r_offset
12510 + input_section
->output_offset
12511 + input_section
->output_section
->vma
)
12512 && tocsave_find (htab
, NO_INSERT
,
12513 &local_syms
, rel
, input_bfd
))
12515 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12517 || insn
== CROR_151515
|| insn
== CROR_313131
)
12518 bfd_put_32 (input_bfd
, STD_R2_40R1
,
12519 contents
+ rel
->r_offset
);
12523 /* Branch taken prediction relocations. */
12524 case R_PPC64_ADDR14_BRTAKEN
:
12525 case R_PPC64_REL14_BRTAKEN
:
12526 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12529 /* Branch not taken prediction relocations. */
12530 case R_PPC64_ADDR14_BRNTAKEN
:
12531 case R_PPC64_REL14_BRNTAKEN
:
12532 insn
|= bfd_get_32 (output_bfd
,
12533 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12536 case R_PPC64_REL14
:
12537 max_br_offset
= 1 << 15;
12540 case R_PPC64_REL24
:
12541 /* Calls to functions with a different TOC, such as calls to
12542 shared objects, need to alter the TOC pointer. This is
12543 done using a linkage stub. A REL24 branching to these
12544 linkage stubs needs to be followed by a nop, as the nop
12545 will be replaced with an instruction to restore the TOC
12550 && h
->oh
->is_func_descriptor
)
12551 fdh
= ppc_follow_link (h
->oh
);
12552 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12553 if (stub_entry
!= NULL
12554 && (stub_entry
->stub_type
== ppc_stub_plt_call
12555 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12556 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12558 bfd_boolean can_plt_call
= FALSE
;
12560 if (rel
->r_offset
+ 8 <= input_section
->size
)
12563 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12565 || nop
== CROR_151515
|| nop
== CROR_313131
)
12568 && (h
== htab
->tls_get_addr_fd
12569 || h
== htab
->tls_get_addr
)
12570 && !htab
->no_tls_get_addr_opt
)
12572 /* Special stub used, leave nop alone. */
12575 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12576 contents
+ rel
->r_offset
+ 4);
12577 can_plt_call
= TRUE
;
12583 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12585 /* If this is a plain branch rather than a branch
12586 and link, don't require a nop. However, don't
12587 allow tail calls in a shared library as they
12588 will result in r2 being corrupted. */
12590 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12591 if (info
->executable
&& (br
& 1) == 0)
12592 can_plt_call
= TRUE
;
12597 && strcmp (h
->elf
.root
.root
.string
,
12598 ".__libc_start_main") == 0)
12600 /* Allow crt1 branch to go via a toc adjusting stub. */
12601 can_plt_call
= TRUE
;
12605 if (strcmp (input_section
->output_section
->name
,
12607 || strcmp (input_section
->output_section
->name
,
12609 info
->callbacks
->einfo
12610 (_("%P: %H: automatic multiple TOCs "
12611 "not supported using your crt files; "
12612 "recompile with -mminimal-toc or upgrade gcc\n"),
12613 input_bfd
, input_section
, rel
->r_offset
);
12615 info
->callbacks
->einfo
12616 (_("%P: %H: sibling call optimization to `%s' "
12617 "does not allow automatic multiple TOCs; "
12618 "recompile with -mminimal-toc or "
12619 "-fno-optimize-sibling-calls, "
12620 "or make `%s' extern\n"),
12621 input_bfd
, input_section
, rel
->r_offset
,
12624 bfd_set_error (bfd_error_bad_value
);
12630 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12631 unresolved_reloc
= FALSE
;
12634 if ((stub_entry
== NULL
12635 || stub_entry
->stub_type
== ppc_stub_long_branch
12636 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12637 && get_opd_info (sec
) != NULL
)
12639 /* The branch destination is the value of the opd entry. */
12640 bfd_vma off
= (relocation
+ addend
12641 - sec
->output_section
->vma
12642 - sec
->output_offset
);
12643 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12644 if (dest
!= (bfd_vma
) -1)
12651 /* If the branch is out of reach we ought to have a long
12653 from
= (rel
->r_offset
12654 + input_section
->output_offset
12655 + input_section
->output_section
->vma
);
12657 if (stub_entry
!= NULL
12658 && (stub_entry
->stub_type
== ppc_stub_long_branch
12659 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12660 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12661 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12662 || (relocation
+ addend
- from
+ max_br_offset
12663 < 2 * max_br_offset
)))
12664 /* Don't use the stub if this branch is in range. */
12667 if (stub_entry
!= NULL
)
12669 /* Munge up the value and addend so that we call the stub
12670 rather than the procedure directly. */
12671 relocation
= (stub_entry
->stub_offset
12672 + stub_entry
->stub_sec
->output_offset
12673 + stub_entry
->stub_sec
->output_section
->vma
);
12676 if (stub_entry
->stub_type
== ppc_stub_plt_call
12677 && rel
+ 1 < relend
12678 && rel
[1].r_offset
== rel
->r_offset
+ 4
12679 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
12687 /* Set 'a' bit. This is 0b00010 in BO field for branch
12688 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12689 for branch on CTR insns (BO == 1a00t or 1a01t). */
12690 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12691 insn
|= 0x02 << 21;
12692 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12693 insn
|= 0x08 << 21;
12699 /* Invert 'y' bit if not the default. */
12700 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12701 insn
^= 0x01 << 21;
12704 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12707 /* NOP out calls to undefined weak functions.
12708 We can thus call a weak function without first
12709 checking whether the function is defined. */
12711 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12712 && h
->elf
.dynindx
== -1
12713 && r_type
== R_PPC64_REL24
12717 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12723 /* Set `addend'. */
12728 info
->callbacks
->einfo
12729 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
12730 input_bfd
, (int) r_type
, sym_name
);
12732 bfd_set_error (bfd_error_bad_value
);
12738 case R_PPC64_TLSGD
:
12739 case R_PPC64_TLSLD
:
12740 case R_PPC64_TOCSAVE
:
12741 case R_PPC64_GNU_VTINHERIT
:
12742 case R_PPC64_GNU_VTENTRY
:
12745 /* GOT16 relocations. Like an ADDR16 using the symbol's
12746 address in the GOT as relocation value instead of the
12747 symbol's value itself. Also, create a GOT entry for the
12748 symbol and put the symbol value there. */
12749 case R_PPC64_GOT_TLSGD16
:
12750 case R_PPC64_GOT_TLSGD16_LO
:
12751 case R_PPC64_GOT_TLSGD16_HI
:
12752 case R_PPC64_GOT_TLSGD16_HA
:
12753 tls_type
= TLS_TLS
| TLS_GD
;
12756 case R_PPC64_GOT_TLSLD16
:
12757 case R_PPC64_GOT_TLSLD16_LO
:
12758 case R_PPC64_GOT_TLSLD16_HI
:
12759 case R_PPC64_GOT_TLSLD16_HA
:
12760 tls_type
= TLS_TLS
| TLS_LD
;
12763 case R_PPC64_GOT_TPREL16_DS
:
12764 case R_PPC64_GOT_TPREL16_LO_DS
:
12765 case R_PPC64_GOT_TPREL16_HI
:
12766 case R_PPC64_GOT_TPREL16_HA
:
12767 tls_type
= TLS_TLS
| TLS_TPREL
;
12770 case R_PPC64_GOT_DTPREL16_DS
:
12771 case R_PPC64_GOT_DTPREL16_LO_DS
:
12772 case R_PPC64_GOT_DTPREL16_HI
:
12773 case R_PPC64_GOT_DTPREL16_HA
:
12774 tls_type
= TLS_TLS
| TLS_DTPREL
;
12777 case R_PPC64_GOT16
:
12778 case R_PPC64_GOT16_LO
:
12779 case R_PPC64_GOT16_HI
:
12780 case R_PPC64_GOT16_HA
:
12781 case R_PPC64_GOT16_DS
:
12782 case R_PPC64_GOT16_LO_DS
:
12785 /* Relocation is to the entry for this symbol in the global
12790 unsigned long indx
= 0;
12791 struct got_entry
*ent
;
12793 if (tls_type
== (TLS_TLS
| TLS_LD
)
12795 || !h
->elf
.def_dynamic
))
12796 ent
= ppc64_tlsld_got (input_bfd
);
12802 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12803 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12806 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12807 /* This is actually a static link, or it is a
12808 -Bsymbolic link and the symbol is defined
12809 locally, or the symbol was forced to be local
12810 because of a version file. */
12814 indx
= h
->elf
.dynindx
;
12815 unresolved_reloc
= FALSE
;
12817 ent
= h
->elf
.got
.glist
;
12821 if (local_got_ents
== NULL
)
12823 ent
= local_got_ents
[r_symndx
];
12826 for (; ent
!= NULL
; ent
= ent
->next
)
12827 if (ent
->addend
== orig_addend
12828 && ent
->owner
== input_bfd
12829 && ent
->tls_type
== tls_type
)
12835 if (ent
->is_indirect
)
12836 ent
= ent
->got
.ent
;
12837 offp
= &ent
->got
.offset
;
12838 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12842 /* The offset must always be a multiple of 8. We use the
12843 least significant bit to record whether we have already
12844 processed this entry. */
12846 if ((off
& 1) != 0)
12850 /* Generate relocs for the dynamic linker, except in
12851 the case of TLSLD where we'll use one entry per
12859 ? h
->elf
.type
== STT_GNU_IFUNC
12860 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12861 if ((info
->shared
|| indx
!= 0)
12863 || (tls_type
== (TLS_TLS
| TLS_LD
)
12864 && !h
->elf
.def_dynamic
)
12865 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12866 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12867 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12869 relgot
= htab
->reliplt
;
12870 if (relgot
!= NULL
)
12872 outrel
.r_offset
= (got
->output_section
->vma
12873 + got
->output_offset
12875 outrel
.r_addend
= addend
;
12876 if (tls_type
& (TLS_LD
| TLS_GD
))
12878 outrel
.r_addend
= 0;
12879 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12880 if (tls_type
== (TLS_TLS
| TLS_GD
))
12882 loc
= relgot
->contents
;
12883 loc
+= (relgot
->reloc_count
++
12884 * sizeof (Elf64_External_Rela
));
12885 bfd_elf64_swap_reloca_out (output_bfd
,
12887 outrel
.r_offset
+= 8;
12888 outrel
.r_addend
= addend
;
12890 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12893 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12894 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12895 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12896 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12897 else if (indx
!= 0)
12898 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12902 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12904 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12906 /* Write the .got section contents for the sake
12908 loc
= got
->contents
+ off
;
12909 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12913 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12915 outrel
.r_addend
+= relocation
;
12916 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12917 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12919 loc
= relgot
->contents
;
12920 loc
+= (relgot
->reloc_count
++
12921 * sizeof (Elf64_External_Rela
));
12922 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12925 /* Init the .got section contents here if we're not
12926 emitting a reloc. */
12929 relocation
+= addend
;
12930 if (tls_type
== (TLS_TLS
| TLS_LD
))
12932 else if (tls_type
!= 0)
12934 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12935 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12936 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12938 if (tls_type
== (TLS_TLS
| TLS_GD
))
12940 bfd_put_64 (output_bfd
, relocation
,
12941 got
->contents
+ off
+ 8);
12946 bfd_put_64 (output_bfd
, relocation
,
12947 got
->contents
+ off
);
12951 if (off
>= (bfd_vma
) -2)
12954 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12955 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12959 case R_PPC64_PLT16_HA
:
12960 case R_PPC64_PLT16_HI
:
12961 case R_PPC64_PLT16_LO
:
12962 case R_PPC64_PLT32
:
12963 case R_PPC64_PLT64
:
12964 /* Relocation is to the entry for this symbol in the
12965 procedure linkage table. */
12967 /* Resolve a PLT reloc against a local symbol directly,
12968 without using the procedure linkage table. */
12972 /* It's possible that we didn't make a PLT entry for this
12973 symbol. This happens when statically linking PIC code,
12974 or when using -Bsymbolic. Go find a match if there is a
12976 if (htab
->plt
!= NULL
)
12978 struct plt_entry
*ent
;
12979 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12980 if (ent
->addend
== orig_addend
12981 && ent
->plt
.offset
!= (bfd_vma
) -1)
12983 relocation
= (htab
->plt
->output_section
->vma
12984 + htab
->plt
->output_offset
12985 + ent
->plt
.offset
);
12986 unresolved_reloc
= FALSE
;
12992 /* Relocation value is TOC base. */
12993 relocation
= TOCstart
;
12994 if (r_symndx
== STN_UNDEF
)
12995 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12996 else if (unresolved_reloc
)
12998 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12999 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
13001 unresolved_reloc
= TRUE
;
13004 /* TOC16 relocs. We want the offset relative to the TOC base,
13005 which is the address of the start of the TOC plus 0x8000.
13006 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13008 case R_PPC64_TOC16
:
13009 case R_PPC64_TOC16_LO
:
13010 case R_PPC64_TOC16_HI
:
13011 case R_PPC64_TOC16_DS
:
13012 case R_PPC64_TOC16_LO_DS
:
13013 case R_PPC64_TOC16_HA
:
13014 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
13017 /* Relocate against the beginning of the section. */
13018 case R_PPC64_SECTOFF
:
13019 case R_PPC64_SECTOFF_LO
:
13020 case R_PPC64_SECTOFF_HI
:
13021 case R_PPC64_SECTOFF_DS
:
13022 case R_PPC64_SECTOFF_LO_DS
:
13023 case R_PPC64_SECTOFF_HA
:
13025 addend
-= sec
->output_section
->vma
;
13028 case R_PPC64_REL16
:
13029 case R_PPC64_REL16_LO
:
13030 case R_PPC64_REL16_HI
:
13031 case R_PPC64_REL16_HA
:
13034 case R_PPC64_REL14
:
13035 case R_PPC64_REL14_BRNTAKEN
:
13036 case R_PPC64_REL14_BRTAKEN
:
13037 case R_PPC64_REL24
:
13040 case R_PPC64_TPREL16
:
13041 case R_PPC64_TPREL16_LO
:
13042 case R_PPC64_TPREL16_HI
:
13043 case R_PPC64_TPREL16_HA
:
13044 case R_PPC64_TPREL16_DS
:
13045 case R_PPC64_TPREL16_LO_DS
:
13046 case R_PPC64_TPREL16_HIGHER
:
13047 case R_PPC64_TPREL16_HIGHERA
:
13048 case R_PPC64_TPREL16_HIGHEST
:
13049 case R_PPC64_TPREL16_HIGHESTA
:
13051 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13052 && h
->elf
.dynindx
== -1)
13054 /* Make this relocation against an undefined weak symbol
13055 resolve to zero. This is really just a tweak, since
13056 code using weak externs ought to check that they are
13057 defined before using them. */
13058 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
13060 insn
= bfd_get_32 (output_bfd
, p
);
13061 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
13063 bfd_put_32 (output_bfd
, insn
, p
);
13066 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13068 /* The TPREL16 relocs shouldn't really be used in shared
13069 libs as they will result in DT_TEXTREL being set, but
13070 support them anyway. */
13074 case R_PPC64_DTPREL16
:
13075 case R_PPC64_DTPREL16_LO
:
13076 case R_PPC64_DTPREL16_HI
:
13077 case R_PPC64_DTPREL16_HA
:
13078 case R_PPC64_DTPREL16_DS
:
13079 case R_PPC64_DTPREL16_LO_DS
:
13080 case R_PPC64_DTPREL16_HIGHER
:
13081 case R_PPC64_DTPREL16_HIGHERA
:
13082 case R_PPC64_DTPREL16_HIGHEST
:
13083 case R_PPC64_DTPREL16_HIGHESTA
:
13084 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13087 case R_PPC64_DTPMOD64
:
13092 case R_PPC64_TPREL64
:
13093 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13096 case R_PPC64_DTPREL64
:
13097 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13100 /* Relocations that may need to be propagated if this is a
13102 case R_PPC64_REL30
:
13103 case R_PPC64_REL32
:
13104 case R_PPC64_REL64
:
13105 case R_PPC64_ADDR14
:
13106 case R_PPC64_ADDR14_BRNTAKEN
:
13107 case R_PPC64_ADDR14_BRTAKEN
:
13108 case R_PPC64_ADDR16
:
13109 case R_PPC64_ADDR16_DS
:
13110 case R_PPC64_ADDR16_HA
:
13111 case R_PPC64_ADDR16_HI
:
13112 case R_PPC64_ADDR16_HIGHER
:
13113 case R_PPC64_ADDR16_HIGHERA
:
13114 case R_PPC64_ADDR16_HIGHEST
:
13115 case R_PPC64_ADDR16_HIGHESTA
:
13116 case R_PPC64_ADDR16_LO
:
13117 case R_PPC64_ADDR16_LO_DS
:
13118 case R_PPC64_ADDR24
:
13119 case R_PPC64_ADDR32
:
13120 case R_PPC64_ADDR64
:
13121 case R_PPC64_UADDR16
:
13122 case R_PPC64_UADDR32
:
13123 case R_PPC64_UADDR64
:
13125 if ((input_section
->flags
& SEC_ALLOC
) == 0)
13128 if (NO_OPD_RELOCS
&& is_opd
)
13133 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13134 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
13135 && (must_be_dyn_reloc (info
, r_type
)
13136 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
13137 || (ELIMINATE_COPY_RELOCS
13140 && h
->elf
.dynindx
!= -1
13141 && !h
->elf
.non_got_ref
13142 && !h
->elf
.def_regular
)
13145 ? h
->elf
.type
== STT_GNU_IFUNC
13146 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
13148 bfd_boolean skip
, relocate
;
13152 /* When generating a dynamic object, these relocations
13153 are copied into the output file to be resolved at run
13159 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
13160 input_section
, rel
->r_offset
);
13161 if (out_off
== (bfd_vma
) -1)
13163 else if (out_off
== (bfd_vma
) -2)
13164 skip
= TRUE
, relocate
= TRUE
;
13165 out_off
+= (input_section
->output_section
->vma
13166 + input_section
->output_offset
);
13167 outrel
.r_offset
= out_off
;
13168 outrel
.r_addend
= rel
->r_addend
;
13170 /* Optimize unaligned reloc use. */
13171 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
13172 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
13173 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
13174 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
13175 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
13176 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
13177 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
13178 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
13179 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
13182 memset (&outrel
, 0, sizeof outrel
);
13183 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
13185 && r_type
!= R_PPC64_TOC
)
13186 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
13189 /* This symbol is local, or marked to become local,
13190 or this is an opd section reloc which must point
13191 at a local function. */
13192 outrel
.r_addend
+= relocation
;
13193 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
13195 if (is_opd
&& h
!= NULL
)
13197 /* Lie about opd entries. This case occurs
13198 when building shared libraries and we
13199 reference a function in another shared
13200 lib. The same thing happens for a weak
13201 definition in an application that's
13202 overridden by a strong definition in a
13203 shared lib. (I believe this is a generic
13204 bug in binutils handling of weak syms.)
13205 In these cases we won't use the opd
13206 entry in this lib. */
13207 unresolved_reloc
= FALSE
;
13210 && r_type
== R_PPC64_ADDR64
13212 ? h
->elf
.type
== STT_GNU_IFUNC
13213 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
13214 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13217 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13219 /* We need to relocate .opd contents for ld.so.
13220 Prelink also wants simple and consistent rules
13221 for relocs. This make all RELATIVE relocs have
13222 *r_offset equal to r_addend. */
13231 ? h
->elf
.type
== STT_GNU_IFUNC
13232 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13234 info
->callbacks
->einfo
13235 (_("%P: %H: relocation %s for indirect "
13236 "function %s unsupported\n"),
13237 input_bfd
, input_section
, rel
->r_offset
,
13238 ppc64_elf_howto_table
[r_type
]->name
,
13242 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
13244 else if (sec
== NULL
|| sec
->owner
== NULL
)
13246 bfd_set_error (bfd_error_bad_value
);
13253 osec
= sec
->output_section
;
13254 indx
= elf_section_data (osec
)->dynindx
;
13258 if ((osec
->flags
& SEC_READONLY
) == 0
13259 && htab
->elf
.data_index_section
!= NULL
)
13260 osec
= htab
->elf
.data_index_section
;
13262 osec
= htab
->elf
.text_index_section
;
13263 indx
= elf_section_data (osec
)->dynindx
;
13265 BFD_ASSERT (indx
!= 0);
13267 /* We are turning this relocation into one
13268 against a section symbol, so subtract out
13269 the output section's address but not the
13270 offset of the input section in the output
13272 outrel
.r_addend
-= osec
->vma
;
13275 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
13279 sreloc
= elf_section_data (input_section
)->sreloc
;
13280 if (!htab
->elf
.dynamic_sections_created
)
13281 sreloc
= htab
->reliplt
;
13282 if (sreloc
== NULL
)
13285 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
13288 loc
= sreloc
->contents
;
13289 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13290 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13292 /* If this reloc is against an external symbol, it will
13293 be computed at runtime, so there's no need to do
13294 anything now. However, for the sake of prelink ensure
13295 that the section contents are a known value. */
13298 unresolved_reloc
= FALSE
;
13299 /* The value chosen here is quite arbitrary as ld.so
13300 ignores section contents except for the special
13301 case of .opd where the contents might be accessed
13302 before relocation. Choose zero, as that won't
13303 cause reloc overflow. */
13306 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13307 to improve backward compatibility with older
13309 if (r_type
== R_PPC64_ADDR64
)
13310 addend
= outrel
.r_addend
;
13311 /* Adjust pc_relative relocs to have zero in *r_offset. */
13312 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
13313 addend
= (input_section
->output_section
->vma
13314 + input_section
->output_offset
13321 case R_PPC64_GLOB_DAT
:
13322 case R_PPC64_JMP_SLOT
:
13323 case R_PPC64_JMP_IREL
:
13324 case R_PPC64_RELATIVE
:
13325 /* We shouldn't ever see these dynamic relocs in relocatable
13327 /* Fall through. */
13329 case R_PPC64_PLTGOT16
:
13330 case R_PPC64_PLTGOT16_DS
:
13331 case R_PPC64_PLTGOT16_HA
:
13332 case R_PPC64_PLTGOT16_HI
:
13333 case R_PPC64_PLTGOT16_LO
:
13334 case R_PPC64_PLTGOT16_LO_DS
:
13335 case R_PPC64_PLTREL32
:
13336 case R_PPC64_PLTREL64
:
13337 /* These ones haven't been implemented yet. */
13339 info
->callbacks
->einfo
13340 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
13342 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
13344 bfd_set_error (bfd_error_invalid_operation
);
13349 /* Multi-instruction sequences that access the TOC can be
13350 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13351 to nop; addi rb,r2,x; */
13357 case R_PPC64_GOT_TLSLD16_HI
:
13358 case R_PPC64_GOT_TLSGD16_HI
:
13359 case R_PPC64_GOT_TPREL16_HI
:
13360 case R_PPC64_GOT_DTPREL16_HI
:
13361 case R_PPC64_GOT16_HI
:
13362 case R_PPC64_TOC16_HI
:
13363 /* These relocs would only be useful if building up an
13364 offset to later add to r2, perhaps in an indexed
13365 addressing mode instruction. Don't try to optimize.
13366 Unfortunately, the possibility of someone building up an
13367 offset like this or even with the HA relocs, means that
13368 we need to check the high insn when optimizing the low
13372 case R_PPC64_GOT_TLSLD16_HA
:
13373 case R_PPC64_GOT_TLSGD16_HA
:
13374 case R_PPC64_GOT_TPREL16_HA
:
13375 case R_PPC64_GOT_DTPREL16_HA
:
13376 case R_PPC64_GOT16_HA
:
13377 case R_PPC64_TOC16_HA
:
13378 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13379 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
13381 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13382 bfd_put_32 (input_bfd
, NOP
, p
);
13386 case R_PPC64_GOT_TLSLD16_LO
:
13387 case R_PPC64_GOT_TLSGD16_LO
:
13388 case R_PPC64_GOT_TPREL16_LO_DS
:
13389 case R_PPC64_GOT_DTPREL16_LO_DS
:
13390 case R_PPC64_GOT16_LO
:
13391 case R_PPC64_GOT16_LO_DS
:
13392 case R_PPC64_TOC16_LO
:
13393 case R_PPC64_TOC16_LO_DS
:
13394 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13395 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
13397 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13398 insn
= bfd_get_32 (input_bfd
, p
);
13399 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
13401 /* Transform addic to addi when we change reg. */
13402 insn
&= ~((0x3f << 26) | (0x1f << 16));
13403 insn
|= (14u << 26) | (2 << 16);
13407 insn
&= ~(0x1f << 16);
13410 bfd_put_32 (input_bfd
, insn
, p
);
13415 /* Do any further special processing. */
13421 case R_PPC64_ADDR16_HA
:
13422 case R_PPC64_REL16_HA
:
13423 case R_PPC64_ADDR16_HIGHERA
:
13424 case R_PPC64_ADDR16_HIGHESTA
:
13425 case R_PPC64_TOC16_HA
:
13426 case R_PPC64_SECTOFF_HA
:
13427 case R_PPC64_TPREL16_HA
:
13428 case R_PPC64_DTPREL16_HA
:
13429 case R_PPC64_TPREL16_HIGHER
:
13430 case R_PPC64_TPREL16_HIGHERA
:
13431 case R_PPC64_TPREL16_HIGHEST
:
13432 case R_PPC64_TPREL16_HIGHESTA
:
13433 case R_PPC64_DTPREL16_HIGHER
:
13434 case R_PPC64_DTPREL16_HIGHERA
:
13435 case R_PPC64_DTPREL16_HIGHEST
:
13436 case R_PPC64_DTPREL16_HIGHESTA
:
13437 /* It's just possible that this symbol is a weak symbol
13438 that's not actually defined anywhere. In that case,
13439 'sec' would be NULL, and we should leave the symbol
13440 alone (it will be set to zero elsewhere in the link). */
13445 case R_PPC64_GOT16_HA
:
13446 case R_PPC64_PLTGOT16_HA
:
13447 case R_PPC64_PLT16_HA
:
13448 case R_PPC64_GOT_TLSGD16_HA
:
13449 case R_PPC64_GOT_TLSLD16_HA
:
13450 case R_PPC64_GOT_TPREL16_HA
:
13451 case R_PPC64_GOT_DTPREL16_HA
:
13452 /* Add 0x10000 if sign bit in 0:15 is set.
13453 Bits 0:15 are not used. */
13457 case R_PPC64_ADDR16_DS
:
13458 case R_PPC64_ADDR16_LO_DS
:
13459 case R_PPC64_GOT16_DS
:
13460 case R_PPC64_GOT16_LO_DS
:
13461 case R_PPC64_PLT16_LO_DS
:
13462 case R_PPC64_SECTOFF_DS
:
13463 case R_PPC64_SECTOFF_LO_DS
:
13464 case R_PPC64_TOC16_DS
:
13465 case R_PPC64_TOC16_LO_DS
:
13466 case R_PPC64_PLTGOT16_DS
:
13467 case R_PPC64_PLTGOT16_LO_DS
:
13468 case R_PPC64_GOT_TPREL16_DS
:
13469 case R_PPC64_GOT_TPREL16_LO_DS
:
13470 case R_PPC64_GOT_DTPREL16_DS
:
13471 case R_PPC64_GOT_DTPREL16_LO_DS
:
13472 case R_PPC64_TPREL16_DS
:
13473 case R_PPC64_TPREL16_LO_DS
:
13474 case R_PPC64_DTPREL16_DS
:
13475 case R_PPC64_DTPREL16_LO_DS
:
13476 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13478 /* If this reloc is against an lq insn, then the value must be
13479 a multiple of 16. This is somewhat of a hack, but the
13480 "correct" way to do this by defining _DQ forms of all the
13481 _DS relocs bloats all reloc switches in this file. It
13482 doesn't seem to make much sense to use any of these relocs
13483 in data, so testing the insn should be safe. */
13484 if ((insn
& (0x3f << 26)) == (56u << 26))
13486 if (((relocation
+ addend
) & mask
) != 0)
13488 info
->callbacks
->einfo
13489 (_("%P: %H: error: %s not a multiple of %u\n"),
13490 input_bfd
, input_section
, rel
->r_offset
,
13491 ppc64_elf_howto_table
[r_type
]->name
,
13493 bfd_set_error (bfd_error_bad_value
);
13500 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13501 because such sections are not SEC_ALLOC and thus ld.so will
13502 not process them. */
13503 if (unresolved_reloc
13504 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13505 && h
->elf
.def_dynamic
)
13506 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
13507 rel
->r_offset
) != (bfd_vma
) -1)
13509 info
->callbacks
->einfo
13510 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
13511 input_bfd
, input_section
, rel
->r_offset
,
13512 ppc64_elf_howto_table
[(int) r_type
]->name
,
13513 h
->elf
.root
.root
.string
);
13517 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13525 if (r
!= bfd_reloc_ok
)
13527 if (sym_name
== NULL
)
13528 sym_name
= "(null)";
13529 if (r
== bfd_reloc_overflow
)
13534 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13535 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13537 /* Assume this is a call protected by other code that
13538 detects the symbol is undefined. If this is the case,
13539 we can safely ignore the overflow. If not, the
13540 program is hosed anyway, and a little warning isn't
13546 if (!((*info
->callbacks
->reloc_overflow
)
13547 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13548 ppc64_elf_howto_table
[r_type
]->name
,
13549 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13554 info
->callbacks
->einfo
13555 (_("%P: %H: %s reloc against `%s': error %d\n"),
13556 input_bfd
, input_section
, rel
->r_offset
,
13557 ppc64_elf_howto_table
[r_type
]->name
,
13565 /* If we're emitting relocations, then shortly after this function
13566 returns, reloc offsets and addends for this section will be
13567 adjusted. Worse, reloc symbol indices will be for the output
13568 file rather than the input. Save a copy of the relocs for
13569 opd_entry_value. */
13570 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13573 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13574 rel
= bfd_alloc (input_bfd
, amt
);
13575 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13576 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13579 memcpy (rel
, relocs
, amt
);
13584 /* Adjust the value of any local symbols in opd sections. */
13587 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13588 const char *name ATTRIBUTE_UNUSED
,
13589 Elf_Internal_Sym
*elfsym
,
13590 asection
*input_sec
,
13591 struct elf_link_hash_entry
*h
)
13593 struct _opd_sec_data
*opd
;
13600 opd
= get_opd_info (input_sec
);
13601 if (opd
== NULL
|| opd
->adjust
== NULL
)
13604 value
= elfsym
->st_value
- input_sec
->output_offset
;
13605 if (!info
->relocatable
)
13606 value
-= input_sec
->output_section
->vma
;
13608 adjust
= opd
->adjust
[value
/ 8];
13612 elfsym
->st_value
+= adjust
;
13616 /* Finish up dynamic symbol handling. We set the contents of various
13617 dynamic sections here. */
13620 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13621 struct bfd_link_info
*info
,
13622 struct elf_link_hash_entry
*h
,
13623 Elf_Internal_Sym
*sym
)
13625 struct ppc_link_hash_table
*htab
;
13626 struct plt_entry
*ent
;
13627 Elf_Internal_Rela rela
;
13630 htab
= ppc_hash_table (info
);
13634 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13635 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13637 /* This symbol has an entry in the procedure linkage
13638 table. Set it up. */
13639 if (!htab
->elf
.dynamic_sections_created
13640 || h
->dynindx
== -1)
13642 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13644 && (h
->root
.type
== bfd_link_hash_defined
13645 || h
->root
.type
== bfd_link_hash_defweak
));
13646 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13647 + htab
->iplt
->output_offset
13648 + ent
->plt
.offset
);
13649 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13650 rela
.r_addend
= (h
->root
.u
.def
.value
13651 + h
->root
.u
.def
.section
->output_offset
13652 + h
->root
.u
.def
.section
->output_section
->vma
13654 loc
= (htab
->reliplt
->contents
13655 + (htab
->reliplt
->reloc_count
++
13656 * sizeof (Elf64_External_Rela
)));
13660 rela
.r_offset
= (htab
->plt
->output_section
->vma
13661 + htab
->plt
->output_offset
13662 + ent
->plt
.offset
);
13663 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13664 rela
.r_addend
= ent
->addend
;
13665 loc
= (htab
->relplt
->contents
13666 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13667 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13669 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13674 /* This symbol needs a copy reloc. Set it up. */
13676 if (h
->dynindx
== -1
13677 || (h
->root
.type
!= bfd_link_hash_defined
13678 && h
->root
.type
!= bfd_link_hash_defweak
)
13679 || htab
->relbss
== NULL
)
13682 rela
.r_offset
= (h
->root
.u
.def
.value
13683 + h
->root
.u
.def
.section
->output_section
->vma
13684 + h
->root
.u
.def
.section
->output_offset
);
13685 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13687 loc
= htab
->relbss
->contents
;
13688 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13689 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13692 /* Mark some specially defined symbols as absolute. */
13693 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13694 sym
->st_shndx
= SHN_ABS
;
13699 /* Used to decide how to sort relocs in an optimal manner for the
13700 dynamic linker, before writing them out. */
13702 static enum elf_reloc_type_class
13703 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13705 enum elf_ppc64_reloc_type r_type
;
13707 r_type
= ELF64_R_TYPE (rela
->r_info
);
13710 case R_PPC64_RELATIVE
:
13711 return reloc_class_relative
;
13712 case R_PPC64_JMP_SLOT
:
13713 return reloc_class_plt
;
13715 return reloc_class_copy
;
13717 return reloc_class_normal
;
13721 /* Finish up the dynamic sections. */
13724 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13725 struct bfd_link_info
*info
)
13727 struct ppc_link_hash_table
*htab
;
13731 htab
= ppc_hash_table (info
);
13735 dynobj
= htab
->elf
.dynobj
;
13736 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13738 if (htab
->elf
.dynamic_sections_created
)
13740 Elf64_External_Dyn
*dyncon
, *dynconend
;
13742 if (sdyn
== NULL
|| htab
->got
== NULL
)
13745 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13746 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13747 for (; dyncon
< dynconend
; dyncon
++)
13749 Elf_Internal_Dyn dyn
;
13752 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13759 case DT_PPC64_GLINK
:
13761 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13762 /* We stupidly defined DT_PPC64_GLINK to be the start
13763 of glink rather than the first entry point, which is
13764 what ld.so needs, and now have a bigger stub to
13765 support automatic multiple TOCs. */
13766 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13770 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13773 dyn
.d_un
.d_ptr
= s
->vma
;
13776 case DT_PPC64_OPDSZ
:
13777 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13780 dyn
.d_un
.d_val
= s
->size
;
13785 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13790 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13794 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13798 /* Don't count procedure linkage table relocs in the
13799 overall reloc count. */
13803 dyn
.d_un
.d_val
-= s
->size
;
13807 /* We may not be using the standard ELF linker script.
13808 If .rela.plt is the first .rela section, we adjust
13809 DT_RELA to not include it. */
13813 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13815 dyn
.d_un
.d_ptr
+= s
->size
;
13819 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13823 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13825 /* Fill in the first entry in the global offset table.
13826 We use it to hold the link-time TOCbase. */
13827 bfd_put_64 (output_bfd
,
13828 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13829 htab
->got
->contents
);
13831 /* Set .got entry size. */
13832 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13835 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13837 /* Set .plt entry size. */
13838 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13842 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13843 brlt ourselves if emitrelocations. */
13844 if (htab
->brlt
!= NULL
13845 && htab
->brlt
->reloc_count
!= 0
13846 && !_bfd_elf_link_output_relocs (output_bfd
,
13848 elf_section_data (htab
->brlt
)->rela
.hdr
,
13849 elf_section_data (htab
->brlt
)->relocs
,
13853 if (htab
->glink
!= NULL
13854 && htab
->glink
->reloc_count
!= 0
13855 && !_bfd_elf_link_output_relocs (output_bfd
,
13857 elf_section_data (htab
->glink
)->rela
.hdr
,
13858 elf_section_data (htab
->glink
)->relocs
,
13863 if (htab
->glink_eh_frame
!= NULL
13864 && htab
->glink_eh_frame
->sec_info_type
== ELF_INFO_TYPE_EH_FRAME
13865 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
13866 htab
->glink_eh_frame
,
13867 htab
->glink_eh_frame
->contents
))
13870 /* We need to handle writing out multiple GOT sections ourselves,
13871 since we didn't add them to DYNOBJ. We know dynobj is the first
13873 while ((dynobj
= dynobj
->link_next
) != NULL
)
13877 if (!is_ppc64_elf (dynobj
))
13880 s
= ppc64_elf_tdata (dynobj
)->got
;
13883 && s
->output_section
!= bfd_abs_section_ptr
13884 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13885 s
->contents
, s
->output_offset
,
13888 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13891 && s
->output_section
!= bfd_abs_section_ptr
13892 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13893 s
->contents
, s
->output_offset
,
13901 #include "elf64-target.h"
13903 /* FreeBSD support */
13905 #undef TARGET_LITTLE_SYM
13906 #undef TARGET_LITTLE_NAME
13908 #undef TARGET_BIG_SYM
13909 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
13910 #undef TARGET_BIG_NAME
13911 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
13914 #define ELF_OSABI ELFOSABI_FREEBSD
13917 #define elf64_bed elf64_powerpc_fbsd_bed
13919 #include "elf64-target.h"