1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 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. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
37 static bfd_reloc_status_type ppc64_elf_ha_reloc
38 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
39 static bfd_reloc_status_type ppc64_elf_branch_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_toc_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_vma opd_entry_value
56 (asection *, bfd_vma, asection **, bfd_vma *);
58 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
59 #define TARGET_LITTLE_NAME "elf64-powerpcle"
60 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
61 #define TARGET_BIG_NAME "elf64-powerpc"
62 #define ELF_ARCH bfd_arch_powerpc
63 #define ELF_MACHINE_CODE EM_PPC64
64 #define ELF_MAXPAGESIZE 0x10000
65 #define ELF_COMMONPAGESIZE 0x1000
66 #define elf_info_to_howto ppc64_elf_info_to_howto
68 #define elf_backend_want_got_sym 0
69 #define elf_backend_want_plt_sym 0
70 #define elf_backend_plt_alignment 3
71 #define elf_backend_plt_not_loaded 1
72 #define elf_backend_got_header_size 8
73 #define elf_backend_can_gc_sections 1
74 #define elf_backend_can_refcount 1
75 #define elf_backend_rela_normal 1
76 #define elf_backend_default_execstack 0
78 #define bfd_elf64_mkobject ppc64_elf_mkobject
79 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
80 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
81 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
82 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
83 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
84 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
85 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
87 #define elf_backend_object_p ppc64_elf_object_p
88 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
89 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
90 #define elf_backend_write_core_note ppc64_elf_write_core_note
91 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
92 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
93 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
94 #define elf_backend_check_directives ppc64_elf_check_directives
95 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
96 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
97 #define elf_backend_check_relocs ppc64_elf_check_relocs
98 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
99 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
100 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
101 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
102 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
103 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
104 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
105 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
106 #define elf_backend_action_discarded ppc64_elf_action_discarded
107 #define elf_backend_relocate_section ppc64_elf_relocate_section
108 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
109 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
110 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
111 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
112 #define elf_backend_special_sections ppc64_elf_special_sections
114 /* The name of the dynamic interpreter. This is put in the .interp
116 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
118 /* The size in bytes of an entry in the procedure linkage table. */
119 #define PLT_ENTRY_SIZE 24
121 /* The initial size of the plt reserved for the dynamic linker. */
122 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
124 /* TOC base pointers offset from start of TOC. */
125 #define TOC_BASE_OFF 0x8000
127 /* Offset of tp and dtp pointers from start of TLS block. */
128 #define TP_OFFSET 0x7000
129 #define DTP_OFFSET 0x8000
131 /* .plt call stub instructions. The normal stub is like this, but
132 sometimes the .plt entry crosses a 64k boundary and we need to
133 insert an addis to adjust r12. */
134 #define PLT_CALL_STUB_SIZE (7*4)
135 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
136 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
137 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
138 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
139 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
140 /* ld %r11,xxx+16@l(%r12) */
141 #define BCTR 0x4e800420 /* bctr */
144 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
145 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
146 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
148 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
150 /* glink call stub instructions. We enter with the index in R0. */
151 #define GLINK_CALL_STUB_SIZE (16*4)
155 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
156 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
158 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
159 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
160 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
161 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
169 #define NOP 0x60000000
171 /* Some other nops. */
172 #define CROR_151515 0x4def7b82
173 #define CROR_313131 0x4ffffb82
175 /* .glink entries for the first 32k functions are two instructions. */
176 #define LI_R0_0 0x38000000 /* li %r0,0 */
177 #define B_DOT 0x48000000 /* b . */
179 /* After that, we need two instructions to load the index, followed by
181 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
182 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
184 /* Instructions used by the save and restore reg functions. */
185 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
186 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
187 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
188 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
189 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
190 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
191 #define LI_R12_0 0x39800000 /* li %r12,0 */
192 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
193 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
194 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
195 #define BLR 0x4e800020 /* blr */
197 /* Since .opd is an array of descriptors and each entry will end up
198 with identical R_PPC64_RELATIVE relocs, there is really no need to
199 propagate .opd relocs; The dynamic linker should be taught to
200 relocate .opd without reloc entries. */
201 #ifndef NO_OPD_RELOCS
202 #define NO_OPD_RELOCS 0
205 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
207 /* Relocation HOWTO's. */
208 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
210 static reloc_howto_type ppc64_elf_howto_raw[] = {
211 /* This reloc does nothing. */
212 HOWTO (R_PPC64_NONE, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC64_NONE", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 /* A standard 32 bit relocation. */
227 HOWTO (R_PPC64_ADDR32, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE, /* pc_relative */
233 complain_overflow_bitfield, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_PPC64_ADDR32", /* name */
236 FALSE, /* partial_inplace */
238 0xffffffff, /* dst_mask */
239 FALSE), /* pcrel_offset */
241 /* An absolute 26 bit branch; the lower two bits must be zero.
242 FIXME: we don't check that, we just clear them. */
243 HOWTO (R_PPC64_ADDR24, /* type */
245 2, /* size (0 = byte, 1 = short, 2 = long) */
247 FALSE, /* pc_relative */
249 complain_overflow_bitfield, /* complain_on_overflow */
250 bfd_elf_generic_reloc, /* special_function */
251 "R_PPC64_ADDR24", /* name */
252 FALSE, /* partial_inplace */
254 0x03fffffc, /* dst_mask */
255 FALSE), /* pcrel_offset */
257 /* A standard 16 bit relocation. */
258 HOWTO (R_PPC64_ADDR16, /* type */
260 1, /* size (0 = byte, 1 = short, 2 = long) */
262 FALSE, /* pc_relative */
264 complain_overflow_bitfield, /* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_PPC64_ADDR16", /* name */
267 FALSE, /* partial_inplace */
269 0xffff, /* dst_mask */
270 FALSE), /* pcrel_offset */
272 /* A 16 bit relocation without overflow. */
273 HOWTO (R_PPC64_ADDR16_LO, /* type */
275 1, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_dont,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC64_ADDR16_LO", /* name */
282 FALSE, /* partial_inplace */
284 0xffff, /* dst_mask */
285 FALSE), /* pcrel_offset */
287 /* Bits 16-31 of an address. */
288 HOWTO (R_PPC64_ADDR16_HI, /* type */
290 1, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE, /* pc_relative */
294 complain_overflow_dont, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC64_ADDR16_HI", /* name */
297 FALSE, /* partial_inplace */
299 0xffff, /* dst_mask */
300 FALSE), /* pcrel_offset */
302 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
303 bits, treated as a signed number, is negative. */
304 HOWTO (R_PPC64_ADDR16_HA, /* type */
306 1, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE, /* pc_relative */
310 complain_overflow_dont, /* complain_on_overflow */
311 ppc64_elf_ha_reloc, /* special_function */
312 "R_PPC64_ADDR16_HA", /* name */
313 FALSE, /* partial_inplace */
315 0xffff, /* dst_mask */
316 FALSE), /* pcrel_offset */
318 /* An absolute 16 bit branch; the lower two bits must be zero.
319 FIXME: we don't check that, we just clear them. */
320 HOWTO (R_PPC64_ADDR14, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_bitfield, /* complain_on_overflow */
327 ppc64_elf_branch_reloc, /* special_function */
328 "R_PPC64_ADDR14", /* name */
329 FALSE, /* partial_inplace */
331 0x0000fffc, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is expected to be taken. The lower two
336 bits must be zero. */
337 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE, /* pc_relative */
343 complain_overflow_bitfield, /* complain_on_overflow */
344 ppc64_elf_brtaken_reloc, /* special_function */
345 "R_PPC64_ADDR14_BRTAKEN",/* name */
346 FALSE, /* partial_inplace */
348 0x0000fffc, /* dst_mask */
349 FALSE), /* pcrel_offset */
351 /* An absolute 16 bit branch, for which bit 10 should be set to
352 indicate that the branch is not expected to be taken. The lower
353 two bits must be zero. */
354 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE, /* pc_relative */
360 complain_overflow_bitfield, /* complain_on_overflow */
361 ppc64_elf_brtaken_reloc, /* special_function */
362 "R_PPC64_ADDR14_BRNTAKEN",/* name */
363 FALSE, /* partial_inplace */
365 0x0000fffc, /* dst_mask */
366 FALSE), /* pcrel_offset */
368 /* A relative 26 bit branch; the lower two bits must be zero. */
369 HOWTO (R_PPC64_REL24, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE, /* pc_relative */
375 complain_overflow_signed, /* complain_on_overflow */
376 ppc64_elf_branch_reloc, /* special_function */
377 "R_PPC64_REL24", /* name */
378 FALSE, /* partial_inplace */
380 0x03fffffc, /* dst_mask */
381 TRUE), /* pcrel_offset */
383 /* A relative 16 bit branch; the lower two bits must be zero. */
384 HOWTO (R_PPC64_REL14, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 TRUE, /* pc_relative */
390 complain_overflow_signed, /* complain_on_overflow */
391 ppc64_elf_branch_reloc, /* special_function */
392 "R_PPC64_REL14", /* name */
393 FALSE, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 TRUE), /* pcrel_offset */
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is expected to be taken. The lower two bits must be
401 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 TRUE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc, /* special_function */
409 "R_PPC64_REL14_BRTAKEN", /* name */
410 FALSE, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 TRUE), /* pcrel_offset */
415 /* A relative 16 bit branch. Bit 10 should be set to indicate that
416 the branch is not expected to be taken. The lower two bits must
418 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 TRUE, /* pc_relative */
424 complain_overflow_signed, /* complain_on_overflow */
425 ppc64_elf_brtaken_reloc, /* special_function */
426 "R_PPC64_REL14_BRNTAKEN",/* name */
427 FALSE, /* partial_inplace */
429 0x0000fffc, /* dst_mask */
430 TRUE), /* pcrel_offset */
432 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
434 HOWTO (R_PPC64_GOT16, /* type */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
438 FALSE, /* pc_relative */
440 complain_overflow_signed, /* complain_on_overflow */
441 ppc64_elf_unhandled_reloc, /* special_function */
442 "R_PPC64_GOT16", /* name */
443 FALSE, /* partial_inplace */
445 0xffff, /* dst_mask */
446 FALSE), /* pcrel_offset */
448 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
450 HOWTO (R_PPC64_GOT16_LO, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_dont, /* complain_on_overflow */
457 ppc64_elf_unhandled_reloc, /* special_function */
458 "R_PPC64_GOT16_LO", /* name */
459 FALSE, /* partial_inplace */
461 0xffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
466 HOWTO (R_PPC64_GOT16_HI, /* type */
468 1, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE, /* pc_relative */
472 complain_overflow_dont,/* complain_on_overflow */
473 ppc64_elf_unhandled_reloc, /* special_function */
474 "R_PPC64_GOT16_HI", /* name */
475 FALSE, /* partial_inplace */
477 0xffff, /* dst_mask */
478 FALSE), /* pcrel_offset */
480 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
482 HOWTO (R_PPC64_GOT16_HA, /* type */
484 1, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE, /* pc_relative */
488 complain_overflow_dont,/* complain_on_overflow */
489 ppc64_elf_unhandled_reloc, /* special_function */
490 "R_PPC64_GOT16_HA", /* name */
491 FALSE, /* partial_inplace */
493 0xffff, /* dst_mask */
494 FALSE), /* pcrel_offset */
496 /* This is used only by the dynamic linker. The symbol should exist
497 both in the object being run and in some shared library. The
498 dynamic linker copies the data addressed by the symbol from the
499 shared library into the object, because the object being
500 run has to have the data at some particular address. */
501 HOWTO (R_PPC64_COPY, /* type */
503 0, /* this one is variable size */
505 FALSE, /* pc_relative */
507 complain_overflow_dont, /* complain_on_overflow */
508 ppc64_elf_unhandled_reloc, /* special_function */
509 "R_PPC64_COPY", /* name */
510 FALSE, /* partial_inplace */
513 FALSE), /* pcrel_offset */
515 /* Like R_PPC64_ADDR64, but used when setting global offset table
517 HOWTO (R_PPC64_GLOB_DAT, /* type */
519 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
521 FALSE, /* pc_relative */
523 complain_overflow_dont, /* complain_on_overflow */
524 ppc64_elf_unhandled_reloc, /* special_function */
525 "R_PPC64_GLOB_DAT", /* name */
526 FALSE, /* partial_inplace */
528 ONES (64), /* dst_mask */
529 FALSE), /* pcrel_offset */
531 /* Created by the link editor. Marks a procedure linkage table
532 entry for a symbol. */
533 HOWTO (R_PPC64_JMP_SLOT, /* type */
535 0, /* size (0 = byte, 1 = short, 2 = long) */
537 FALSE, /* pc_relative */
539 complain_overflow_dont, /* complain_on_overflow */
540 ppc64_elf_unhandled_reloc, /* special_function */
541 "R_PPC64_JMP_SLOT", /* name */
542 FALSE, /* partial_inplace */
545 FALSE), /* pcrel_offset */
547 /* Used only by the dynamic linker. When the object is run, this
548 doubleword64 is set to the load address of the object, plus the
550 HOWTO (R_PPC64_RELATIVE, /* type */
552 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
554 FALSE, /* pc_relative */
556 complain_overflow_dont, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_PPC64_RELATIVE", /* name */
559 FALSE, /* partial_inplace */
561 ONES (64), /* dst_mask */
562 FALSE), /* pcrel_offset */
564 /* Like R_PPC64_ADDR32, but may be unaligned. */
565 HOWTO (R_PPC64_UADDR32, /* type */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
569 FALSE, /* pc_relative */
571 complain_overflow_bitfield, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC64_UADDR32", /* name */
574 FALSE, /* partial_inplace */
576 0xffffffff, /* dst_mask */
577 FALSE), /* pcrel_offset */
579 /* Like R_PPC64_ADDR16, but may be unaligned. */
580 HOWTO (R_PPC64_UADDR16, /* type */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE, /* pc_relative */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC64_UADDR16", /* name */
589 FALSE, /* partial_inplace */
591 0xffff, /* dst_mask */
592 FALSE), /* pcrel_offset */
594 /* 32-bit PC relative. */
595 HOWTO (R_PPC64_REL32, /* type */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
599 TRUE, /* pc_relative */
601 /* FIXME: Verify. Was complain_overflow_bitfield. */
602 complain_overflow_signed, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC64_REL32", /* name */
605 FALSE, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 TRUE), /* pcrel_offset */
610 /* 32-bit relocation to the symbol's procedure linkage table. */
611 HOWTO (R_PPC64_PLT32, /* type */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
615 FALSE, /* pc_relative */
617 complain_overflow_bitfield, /* complain_on_overflow */
618 ppc64_elf_unhandled_reloc, /* special_function */
619 "R_PPC64_PLT32", /* name */
620 FALSE, /* partial_inplace */
622 0xffffffff, /* dst_mask */
623 FALSE), /* pcrel_offset */
625 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
626 FIXME: R_PPC64_PLTREL32 not supported. */
627 HOWTO (R_PPC64_PLTREL32, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 TRUE, /* pc_relative */
633 complain_overflow_signed, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_PLTREL32", /* name */
636 FALSE, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 TRUE), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
643 HOWTO (R_PPC64_PLT16_LO, /* type */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE, /* pc_relative */
649 complain_overflow_dont, /* complain_on_overflow */
650 ppc64_elf_unhandled_reloc, /* special_function */
651 "R_PPC64_PLT16_LO", /* name */
652 FALSE, /* partial_inplace */
654 0xffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
657 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
659 HOWTO (R_PPC64_PLT16_HI, /* type */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
663 FALSE, /* pc_relative */
665 complain_overflow_dont, /* complain_on_overflow */
666 ppc64_elf_unhandled_reloc, /* special_function */
667 "R_PPC64_PLT16_HI", /* name */
668 FALSE, /* partial_inplace */
670 0xffff, /* dst_mask */
671 FALSE), /* pcrel_offset */
673 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
675 HOWTO (R_PPC64_PLT16_HA, /* type */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
679 FALSE, /* pc_relative */
681 complain_overflow_dont, /* complain_on_overflow */
682 ppc64_elf_unhandled_reloc, /* special_function */
683 "R_PPC64_PLT16_HA", /* name */
684 FALSE, /* partial_inplace */
686 0xffff, /* dst_mask */
687 FALSE), /* pcrel_offset */
689 /* 16-bit section relative relocation. */
690 HOWTO (R_PPC64_SECTOFF, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE, /* pc_relative */
696 complain_overflow_bitfield, /* complain_on_overflow */
697 ppc64_elf_sectoff_reloc, /* special_function */
698 "R_PPC64_SECTOFF", /* name */
699 FALSE, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
704 /* Like R_PPC64_SECTOFF, but no overflow warning. */
705 HOWTO (R_PPC64_SECTOFF_LO, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_dont, /* complain_on_overflow */
712 ppc64_elf_sectoff_reloc, /* special_function */
713 "R_PPC64_SECTOFF_LO", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* 16-bit upper half section relative relocation. */
720 HOWTO (R_PPC64_SECTOFF_HI, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 ppc64_elf_sectoff_reloc, /* special_function */
728 "R_PPC64_SECTOFF_HI", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* 16-bit upper half adjusted section relative relocation. */
735 HOWTO (R_PPC64_SECTOFF_HA, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_dont, /* complain_on_overflow */
742 ppc64_elf_sectoff_ha_reloc, /* special_function */
743 "R_PPC64_SECTOFF_HA", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* Like R_PPC64_REL24 without touching the two least significant bits. */
750 HOWTO (R_PPC64_REL30, /* type */
752 2, /* size (0 = byte, 1 = short, 2 = long) */
754 TRUE, /* pc_relative */
756 complain_overflow_dont, /* complain_on_overflow */
757 bfd_elf_generic_reloc, /* special_function */
758 "R_PPC64_REL30", /* name */
759 FALSE, /* partial_inplace */
761 0xfffffffc, /* dst_mask */
762 TRUE), /* pcrel_offset */
764 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
766 /* A standard 64-bit relocation. */
767 HOWTO (R_PPC64_ADDR64, /* type */
769 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
771 FALSE, /* pc_relative */
773 complain_overflow_dont, /* complain_on_overflow */
774 bfd_elf_generic_reloc, /* special_function */
775 "R_PPC64_ADDR64", /* name */
776 FALSE, /* partial_inplace */
778 ONES (64), /* dst_mask */
779 FALSE), /* pcrel_offset */
781 /* The bits 32-47 of an address. */
782 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE, /* pc_relative */
788 complain_overflow_dont, /* complain_on_overflow */
789 bfd_elf_generic_reloc, /* special_function */
790 "R_PPC64_ADDR16_HIGHER", /* name */
791 FALSE, /* partial_inplace */
793 0xffff, /* dst_mask */
794 FALSE), /* pcrel_offset */
796 /* The bits 32-47 of an address, plus 1 if the contents of the low
797 16 bits, treated as a signed number, is negative. */
798 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE, /* pc_relative */
804 complain_overflow_dont, /* complain_on_overflow */
805 ppc64_elf_ha_reloc, /* special_function */
806 "R_PPC64_ADDR16_HIGHERA", /* name */
807 FALSE, /* partial_inplace */
809 0xffff, /* dst_mask */
810 FALSE), /* pcrel_offset */
812 /* The bits 48-63 of an address. */
813 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
815 1, /* size (0 = byte, 1 = short, 2 = long) */
817 FALSE, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR16_HIGHEST", /* name */
822 FALSE, /* partial_inplace */
824 0xffff, /* dst_mask */
825 FALSE), /* pcrel_offset */
827 /* The bits 48-63 of an address, plus 1 if the contents of the low
828 16 bits, treated as a signed number, is negative. */
829 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
833 FALSE, /* pc_relative */
835 complain_overflow_dont, /* complain_on_overflow */
836 ppc64_elf_ha_reloc, /* special_function */
837 "R_PPC64_ADDR16_HIGHESTA", /* name */
838 FALSE, /* partial_inplace */
840 0xffff, /* dst_mask */
841 FALSE), /* pcrel_offset */
843 /* Like ADDR64, but may be unaligned. */
844 HOWTO (R_PPC64_UADDR64, /* type */
846 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
848 FALSE, /* pc_relative */
850 complain_overflow_dont, /* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
852 "R_PPC64_UADDR64", /* name */
853 FALSE, /* partial_inplace */
855 ONES (64), /* dst_mask */
856 FALSE), /* pcrel_offset */
858 /* 64-bit relative relocation. */
859 HOWTO (R_PPC64_REL64, /* type */
861 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
863 TRUE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_REL64", /* name */
868 FALSE, /* partial_inplace */
870 ONES (64), /* dst_mask */
871 TRUE), /* pcrel_offset */
873 /* 64-bit relocation to the symbol's procedure linkage table. */
874 HOWTO (R_PPC64_PLT64, /* type */
876 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
878 FALSE, /* pc_relative */
880 complain_overflow_dont, /* complain_on_overflow */
881 ppc64_elf_unhandled_reloc, /* special_function */
882 "R_PPC64_PLT64", /* name */
883 FALSE, /* partial_inplace */
885 ONES (64), /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* 64-bit PC relative relocation to the symbol's procedure linkage
890 /* FIXME: R_PPC64_PLTREL64 not supported. */
891 HOWTO (R_PPC64_PLTREL64, /* type */
893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
895 TRUE, /* pc_relative */
897 complain_overflow_dont, /* complain_on_overflow */
898 ppc64_elf_unhandled_reloc, /* special_function */
899 "R_PPC64_PLTREL64", /* name */
900 FALSE, /* partial_inplace */
902 ONES (64), /* dst_mask */
903 TRUE), /* pcrel_offset */
905 /* 16 bit TOC-relative relocation. */
907 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
908 HOWTO (R_PPC64_TOC16, /* type */
910 1, /* size (0 = byte, 1 = short, 2 = long) */
912 FALSE, /* pc_relative */
914 complain_overflow_signed, /* complain_on_overflow */
915 ppc64_elf_toc_reloc, /* special_function */
916 "R_PPC64_TOC16", /* name */
917 FALSE, /* partial_inplace */
919 0xffff, /* dst_mask */
920 FALSE), /* pcrel_offset */
922 /* 16 bit TOC-relative relocation without overflow. */
924 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
925 HOWTO (R_PPC64_TOC16_LO, /* type */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE, /* pc_relative */
931 complain_overflow_dont, /* complain_on_overflow */
932 ppc64_elf_toc_reloc, /* special_function */
933 "R_PPC64_TOC16_LO", /* name */
934 FALSE, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
939 /* 16 bit TOC-relative relocation, high 16 bits. */
941 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
942 HOWTO (R_PPC64_TOC16_HI, /* type */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
946 FALSE, /* pc_relative */
948 complain_overflow_dont, /* complain_on_overflow */
949 ppc64_elf_toc_reloc, /* special_function */
950 "R_PPC64_TOC16_HI", /* name */
951 FALSE, /* partial_inplace */
953 0xffff, /* dst_mask */
954 FALSE), /* pcrel_offset */
956 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
957 contents of the low 16 bits, treated as a signed number, is
960 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
961 HOWTO (R_PPC64_TOC16_HA, /* type */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE, /* pc_relative */
967 complain_overflow_dont, /* complain_on_overflow */
968 ppc64_elf_toc_ha_reloc, /* special_function */
969 "R_PPC64_TOC16_HA", /* name */
970 FALSE, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE), /* pcrel_offset */
975 /* 64-bit relocation; insert value of TOC base (.TOC.). */
977 /* R_PPC64_TOC 51 doubleword64 .TOC. */
978 HOWTO (R_PPC64_TOC, /* type */
980 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
982 FALSE, /* pc_relative */
984 complain_overflow_bitfield, /* complain_on_overflow */
985 ppc64_elf_toc64_reloc, /* special_function */
986 "R_PPC64_TOC", /* name */
987 FALSE, /* partial_inplace */
989 ONES (64), /* dst_mask */
990 FALSE), /* pcrel_offset */
992 /* Like R_PPC64_GOT16, but also informs the link editor that the
993 value to relocate may (!) refer to a PLT entry which the link
994 editor (a) may replace with the symbol value. If the link editor
995 is unable to fully resolve the symbol, it may (b) create a PLT
996 entry and store the address to the new PLT entry in the GOT.
997 This permits lazy resolution of function symbols at run time.
998 The link editor may also skip all of this and just (c) emit a
999 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1000 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1001 HOWTO (R_PPC64_PLTGOT16, /* type */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE, /* pc_relative */
1007 complain_overflow_signed, /* complain_on_overflow */
1008 ppc64_elf_unhandled_reloc, /* special_function */
1009 "R_PPC64_PLTGOT16", /* name */
1010 FALSE, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
1015 /* Like R_PPC64_PLTGOT16, but without overflow. */
1016 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1017 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc64_elf_unhandled_reloc, /* special_function */
1025 "R_PPC64_PLTGOT16_LO", /* name */
1026 FALSE, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1031 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1032 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1033 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc64_elf_unhandled_reloc, /* special_function */
1041 "R_PPC64_PLTGOT16_HI", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1048 1 if the contents of the low 16 bits, treated as a signed number,
1050 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE, /* pc_relative */
1057 complain_overflow_dont,/* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HA", /* name */
1060 FALSE, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1065 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1066 HOWTO (R_PPC64_ADDR16_DS, /* type */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE, /* pc_relative */
1072 complain_overflow_bitfield, /* complain_on_overflow */
1073 bfd_elf_generic_reloc, /* special_function */
1074 "R_PPC64_ADDR16_DS", /* name */
1075 FALSE, /* partial_inplace */
1077 0xfffc, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1080 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1081 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE, /* pc_relative */
1087 complain_overflow_dont,/* complain_on_overflow */
1088 bfd_elf_generic_reloc, /* special_function */
1089 "R_PPC64_ADDR16_LO_DS",/* name */
1090 FALSE, /* partial_inplace */
1092 0xfffc, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1095 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1096 HOWTO (R_PPC64_GOT16_DS, /* type */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE, /* pc_relative */
1102 complain_overflow_signed, /* complain_on_overflow */
1103 ppc64_elf_unhandled_reloc, /* special_function */
1104 "R_PPC64_GOT16_DS", /* name */
1105 FALSE, /* partial_inplace */
1107 0xfffc, /* dst_mask */
1108 FALSE), /* pcrel_offset */
1110 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1111 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_dont, /* complain_on_overflow */
1118 ppc64_elf_unhandled_reloc, /* special_function */
1119 "R_PPC64_GOT16_LO_DS", /* name */
1120 FALSE, /* partial_inplace */
1122 0xfffc, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1126 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc64_elf_unhandled_reloc, /* special_function */
1134 "R_PPC64_PLT16_LO_DS", /* name */
1135 FALSE, /* partial_inplace */
1137 0xfffc, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1141 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_bitfield, /* complain_on_overflow */
1148 ppc64_elf_sectoff_reloc, /* special_function */
1149 "R_PPC64_SECTOFF_DS", /* name */
1150 FALSE, /* partial_inplace */
1152 0xfffc, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1156 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc64_elf_sectoff_reloc, /* special_function */
1164 "R_PPC64_SECTOFF_LO_DS",/* name */
1165 FALSE, /* partial_inplace */
1167 0xfffc, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1171 HOWTO (R_PPC64_TOC16_DS, /* type */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE, /* pc_relative */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc64_elf_toc_reloc, /* special_function */
1179 "R_PPC64_TOC16_DS", /* name */
1180 FALSE, /* partial_inplace */
1182 0xfffc, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1185 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1186 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE, /* pc_relative */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc64_elf_toc_reloc, /* special_function */
1194 "R_PPC64_TOC16_LO_DS", /* name */
1195 FALSE, /* partial_inplace */
1197 0xfffc, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1200 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1201 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1202 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_signed, /* complain_on_overflow */
1209 ppc64_elf_unhandled_reloc, /* special_function */
1210 "R_PPC64_PLTGOT16_DS", /* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1217 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1218 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1220 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE, /* pc_relative */
1224 complain_overflow_dont, /* complain_on_overflow */
1225 ppc64_elf_unhandled_reloc, /* special_function */
1226 "R_PPC64_PLTGOT16_LO_DS",/* name */
1227 FALSE, /* partial_inplace */
1229 0xfffc, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1232 /* Marker reloc for TLS. */
1235 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE, /* pc_relative */
1239 complain_overflow_dont, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC64_TLS", /* name */
1242 FALSE, /* partial_inplace */
1245 FALSE), /* pcrel_offset */
1247 /* Computes the load module index of the load module that contains the
1248 definition of its TLS sym. */
1249 HOWTO (R_PPC64_DTPMOD64,
1251 4, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE, /* pc_relative */
1255 complain_overflow_dont, /* complain_on_overflow */
1256 ppc64_elf_unhandled_reloc, /* special_function */
1257 "R_PPC64_DTPMOD64", /* name */
1258 FALSE, /* partial_inplace */
1260 ONES (64), /* dst_mask */
1261 FALSE), /* pcrel_offset */
1263 /* Computes a dtv-relative displacement, the difference between the value
1264 of sym+add and the base address of the thread-local storage block that
1265 contains the definition of sym, minus 0x8000. */
1266 HOWTO (R_PPC64_DTPREL64,
1268 4, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE, /* pc_relative */
1272 complain_overflow_dont, /* complain_on_overflow */
1273 ppc64_elf_unhandled_reloc, /* special_function */
1274 "R_PPC64_DTPREL64", /* name */
1275 FALSE, /* partial_inplace */
1277 ONES (64), /* dst_mask */
1278 FALSE), /* pcrel_offset */
1280 /* A 16 bit dtprel reloc. */
1281 HOWTO (R_PPC64_DTPREL16,
1283 1, /* size (0 = byte, 1 = short, 2 = long) */
1285 FALSE, /* pc_relative */
1287 complain_overflow_signed, /* complain_on_overflow */
1288 ppc64_elf_unhandled_reloc, /* special_function */
1289 "R_PPC64_DTPREL16", /* name */
1290 FALSE, /* partial_inplace */
1292 0xffff, /* dst_mask */
1293 FALSE), /* pcrel_offset */
1295 /* Like DTPREL16, but no overflow. */
1296 HOWTO (R_PPC64_DTPREL16_LO,
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE, /* pc_relative */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc64_elf_unhandled_reloc, /* special_function */
1304 "R_PPC64_DTPREL16_LO", /* name */
1305 FALSE, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1310 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1311 HOWTO (R_PPC64_DTPREL16_HI,
1312 16, /* rightshift */
1313 1, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_dont, /* complain_on_overflow */
1318 ppc64_elf_unhandled_reloc, /* special_function */
1319 "R_PPC64_DTPREL16_HI", /* name */
1320 FALSE, /* partial_inplace */
1322 0xffff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1325 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1326 HOWTO (R_PPC64_DTPREL16_HA,
1327 16, /* rightshift */
1328 1, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL16_HA", /* name */
1335 FALSE, /* partial_inplace */
1337 0xffff, /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1341 HOWTO (R_PPC64_DTPREL16_HIGHER,
1342 32, /* rightshift */
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE, /* pc_relative */
1347 complain_overflow_dont, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16_HIGHER", /* name */
1350 FALSE, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1355 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1356 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1357 32, /* rightshift */
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE, /* pc_relative */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_HIGHERA", /* name */
1365 FALSE, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1370 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1372 48, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE, /* pc_relative */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HIGHEST", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1387 48, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1400 /* Like DTPREL16, but for insns with a DS field. */
1401 HOWTO (R_PPC64_DTPREL16_DS,
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_signed, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_DS", /* name */
1410 FALSE, /* partial_inplace */
1412 0xfffc, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 /* Like DTPREL16_DS, but no overflow. */
1416 HOWTO (R_PPC64_DTPREL16_LO_DS,
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_LO_DS", /* name */
1425 FALSE, /* partial_inplace */
1427 0xfffc, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1430 /* Computes a tp-relative displacement, the difference between the value of
1431 sym+add and the value of the thread pointer (r13). */
1432 HOWTO (R_PPC64_TPREL64,
1434 4, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE, /* pc_relative */
1438 complain_overflow_dont, /* complain_on_overflow */
1439 ppc64_elf_unhandled_reloc, /* special_function */
1440 "R_PPC64_TPREL64", /* name */
1441 FALSE, /* partial_inplace */
1443 ONES (64), /* dst_mask */
1444 FALSE), /* pcrel_offset */
1446 /* A 16 bit tprel reloc. */
1447 HOWTO (R_PPC64_TPREL16,
1449 1, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_signed, /* complain_on_overflow */
1454 ppc64_elf_unhandled_reloc, /* special_function */
1455 "R_PPC64_TPREL16", /* name */
1456 FALSE, /* partial_inplace */
1458 0xffff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1461 /* Like TPREL16, but no overflow. */
1462 HOWTO (R_PPC64_TPREL16_LO,
1464 1, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE, /* pc_relative */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 ppc64_elf_unhandled_reloc, /* special_function */
1470 "R_PPC64_TPREL16_LO", /* name */
1471 FALSE, /* partial_inplace */
1473 0xffff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1476 /* Like TPREL16_LO, but next higher group of 16 bits. */
1477 HOWTO (R_PPC64_TPREL16_HI,
1478 16, /* rightshift */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE, /* pc_relative */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 ppc64_elf_unhandled_reloc, /* special_function */
1485 "R_PPC64_TPREL16_HI", /* name */
1486 FALSE, /* partial_inplace */
1488 0xffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1491 /* Like TPREL16_HI, but adjust for low 16 bits. */
1492 HOWTO (R_PPC64_TPREL16_HA,
1493 16, /* rightshift */
1494 1, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL16_HA", /* name */
1501 FALSE, /* partial_inplace */
1503 0xffff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* Like TPREL16_HI, but next higher group of 16 bits. */
1507 HOWTO (R_PPC64_TPREL16_HIGHER,
1508 32, /* rightshift */
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16_HIGHER", /* name */
1516 FALSE, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1522 HOWTO (R_PPC64_TPREL16_HIGHERA,
1523 32, /* rightshift */
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_HIGHERA", /* name */
1531 FALSE, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HIGHEST,
1538 48, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE, /* pc_relative */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HIGHEST", /* name */
1546 FALSE, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1551 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1553 48, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE, /* pc_relative */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HIGHESTA", /* name */
1561 FALSE, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1566 /* Like TPREL16, but for insns with a DS field. */
1567 HOWTO (R_PPC64_TPREL16_DS,
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE, /* pc_relative */
1573 complain_overflow_signed, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_DS", /* name */
1576 FALSE, /* partial_inplace */
1578 0xfffc, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1581 /* Like TPREL16_DS, but no overflow. */
1582 HOWTO (R_PPC64_TPREL16_LO_DS,
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_LO_DS", /* name */
1591 FALSE, /* partial_inplace */
1593 0xfffc, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1597 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1598 to the first entry relative to the TOC base (r2). */
1599 HOWTO (R_PPC64_GOT_TLSGD16,
1601 1, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE, /* pc_relative */
1605 complain_overflow_signed, /* complain_on_overflow */
1606 ppc64_elf_unhandled_reloc, /* special_function */
1607 "R_PPC64_GOT_TLSGD16", /* name */
1608 FALSE, /* partial_inplace */
1610 0xffff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1613 /* Like GOT_TLSGD16, but no overflow. */
1614 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE, /* pc_relative */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc64_elf_unhandled_reloc, /* special_function */
1622 "R_PPC64_GOT_TLSGD16_LO", /* name */
1623 FALSE, /* partial_inplace */
1625 0xffff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1628 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1629 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1630 16, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE, /* pc_relative */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc64_elf_unhandled_reloc, /* special_function */
1637 "R_PPC64_GOT_TLSGD16_HI", /* name */
1638 FALSE, /* partial_inplace */
1640 0xffff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1643 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1644 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1645 16, /* rightshift */
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE, /* pc_relative */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc64_elf_unhandled_reloc, /* special_function */
1652 "R_PPC64_GOT_TLSGD16_HA", /* name */
1653 FALSE, /* partial_inplace */
1655 0xffff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1658 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1659 with values (sym+add)@dtpmod and zero, and computes the offset to the
1660 first entry relative to the TOC base (r2). */
1661 HOWTO (R_PPC64_GOT_TLSLD16,
1663 1, /* size (0 = byte, 1 = short, 2 = long) */
1665 FALSE, /* pc_relative */
1667 complain_overflow_signed, /* complain_on_overflow */
1668 ppc64_elf_unhandled_reloc, /* special_function */
1669 "R_PPC64_GOT_TLSLD16", /* name */
1670 FALSE, /* partial_inplace */
1672 0xffff, /* dst_mask */
1673 FALSE), /* pcrel_offset */
1675 /* Like GOT_TLSLD16, but no overflow. */
1676 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 FALSE, /* pc_relative */
1682 complain_overflow_dont, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc, /* special_function */
1684 "R_PPC64_GOT_TLSLD16_LO", /* name */
1685 FALSE, /* partial_inplace */
1687 0xffff, /* dst_mask */
1688 FALSE), /* pcrel_offset */
1690 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1691 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1692 16, /* rightshift */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 FALSE, /* pc_relative */
1697 complain_overflow_dont, /* complain_on_overflow */
1698 ppc64_elf_unhandled_reloc, /* special_function */
1699 "R_PPC64_GOT_TLSLD16_HI", /* name */
1700 FALSE, /* partial_inplace */
1702 0xffff, /* dst_mask */
1703 FALSE), /* pcrel_offset */
1705 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1706 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 FALSE, /* pc_relative */
1712 complain_overflow_dont, /* complain_on_overflow */
1713 ppc64_elf_unhandled_reloc, /* special_function */
1714 "R_PPC64_GOT_TLSLD16_HA", /* name */
1715 FALSE, /* partial_inplace */
1717 0xffff, /* dst_mask */
1718 FALSE), /* pcrel_offset */
1720 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1721 the offset to the entry relative to the TOC base (r2). */
1722 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1726 FALSE, /* pc_relative */
1728 complain_overflow_signed, /* complain_on_overflow */
1729 ppc64_elf_unhandled_reloc, /* special_function */
1730 "R_PPC64_GOT_DTPREL16_DS", /* name */
1731 FALSE, /* partial_inplace */
1733 0xfffc, /* dst_mask */
1734 FALSE), /* pcrel_offset */
1736 /* Like GOT_DTPREL16_DS, but no overflow. */
1737 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1739 1, /* size (0 = byte, 1 = short, 2 = long) */
1741 FALSE, /* pc_relative */
1743 complain_overflow_dont, /* complain_on_overflow */
1744 ppc64_elf_unhandled_reloc, /* special_function */
1745 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1746 FALSE, /* partial_inplace */
1748 0xfffc, /* dst_mask */
1749 FALSE), /* pcrel_offset */
1751 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1752 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1753 16, /* rightshift */
1754 1, /* size (0 = byte, 1 = short, 2 = long) */
1756 FALSE, /* pc_relative */
1758 complain_overflow_dont, /* complain_on_overflow */
1759 ppc64_elf_unhandled_reloc, /* special_function */
1760 "R_PPC64_GOT_DTPREL16_HI", /* name */
1761 FALSE, /* partial_inplace */
1763 0xffff, /* dst_mask */
1764 FALSE), /* pcrel_offset */
1766 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1767 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1768 16, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE, /* pc_relative */
1773 complain_overflow_dont, /* complain_on_overflow */
1774 ppc64_elf_unhandled_reloc, /* special_function */
1775 "R_PPC64_GOT_DTPREL16_HA", /* name */
1776 FALSE, /* partial_inplace */
1778 0xffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
1781 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1782 offset to the entry relative to the TOC base (r2). */
1783 HOWTO (R_PPC64_GOT_TPREL16_DS,
1785 1, /* size (0 = byte, 1 = short, 2 = long) */
1787 FALSE, /* pc_relative */
1789 complain_overflow_signed, /* complain_on_overflow */
1790 ppc64_elf_unhandled_reloc, /* special_function */
1791 "R_PPC64_GOT_TPREL16_DS", /* name */
1792 FALSE, /* partial_inplace */
1794 0xfffc, /* dst_mask */
1795 FALSE), /* pcrel_offset */
1797 /* Like GOT_TPREL16_DS, but no overflow. */
1798 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1800 1, /* size (0 = byte, 1 = short, 2 = long) */
1802 FALSE, /* pc_relative */
1804 complain_overflow_dont, /* complain_on_overflow */
1805 ppc64_elf_unhandled_reloc, /* special_function */
1806 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1807 FALSE, /* partial_inplace */
1809 0xfffc, /* dst_mask */
1810 FALSE), /* pcrel_offset */
1812 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1813 HOWTO (R_PPC64_GOT_TPREL16_HI,
1814 16, /* rightshift */
1815 1, /* size (0 = byte, 1 = short, 2 = long) */
1817 FALSE, /* pc_relative */
1819 complain_overflow_dont, /* complain_on_overflow */
1820 ppc64_elf_unhandled_reloc, /* special_function */
1821 "R_PPC64_GOT_TPREL16_HI", /* name */
1822 FALSE, /* partial_inplace */
1824 0xffff, /* dst_mask */
1825 FALSE), /* pcrel_offset */
1827 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1828 HOWTO (R_PPC64_GOT_TPREL16_HA,
1829 16, /* rightshift */
1830 1, /* size (0 = byte, 1 = short, 2 = long) */
1832 FALSE, /* pc_relative */
1834 complain_overflow_dont, /* complain_on_overflow */
1835 ppc64_elf_unhandled_reloc, /* special_function */
1836 "R_PPC64_GOT_TPREL16_HA", /* name */
1837 FALSE, /* partial_inplace */
1839 0xffff, /* dst_mask */
1840 FALSE), /* pcrel_offset */
1842 /* GNU extension to record C++ vtable hierarchy. */
1843 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1845 0, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE, /* pc_relative */
1849 complain_overflow_dont, /* complain_on_overflow */
1850 NULL, /* special_function */
1851 "R_PPC64_GNU_VTINHERIT", /* name */
1852 FALSE, /* partial_inplace */
1855 FALSE), /* pcrel_offset */
1857 /* GNU extension to record C++ vtable member usage. */
1858 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1860 0, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE, /* pc_relative */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 NULL, /* special_function */
1866 "R_PPC64_GNU_VTENTRY", /* name */
1867 FALSE, /* partial_inplace */
1870 FALSE), /* pcrel_offset */
1874 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1878 ppc_howto_init (void)
1880 unsigned int i, type;
1883 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1886 type = ppc64_elf_howto_raw[i].type;
1887 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1888 / sizeof (ppc64_elf_howto_table[0])));
1889 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1893 static reloc_howto_type *
1894 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1895 bfd_reloc_code_real_type code)
1897 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1899 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1900 /* Initialize howto table if needed. */
1908 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1910 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1912 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1914 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1916 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1918 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1920 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1922 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1924 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1926 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1928 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1930 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1932 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1934 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1936 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1938 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1940 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1942 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1944 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1946 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1948 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1950 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1952 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1954 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1956 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1958 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1960 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1962 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1964 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1966 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1968 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1970 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1972 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1974 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1976 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1978 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1980 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1982 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1984 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1986 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1988 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1990 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1992 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1994 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1996 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1998 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2000 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2002 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2004 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2006 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2008 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2010 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2012 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2014 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2016 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2018 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2020 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2022 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2024 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2026 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2028 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2030 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2032 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2034 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2036 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2038 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2040 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2042 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2044 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2046 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2048 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2050 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2052 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2054 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2056 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2058 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2060 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2062 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2064 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2066 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2068 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2070 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2072 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2074 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2076 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2078 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2080 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2082 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2084 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2086 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2088 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2090 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2092 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2094 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2096 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2098 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2100 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2102 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2104 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2106 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2108 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2112 return ppc64_elf_howto_table[r];
2115 static reloc_howto_type *
2116 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2122 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2124 if (ppc64_elf_howto_raw[i].name != NULL
2125 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2126 return &ppc64_elf_howto_raw[i];
2131 /* Set the howto pointer for a PowerPC ELF reloc. */
2134 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2135 Elf_Internal_Rela *dst)
2139 /* Initialize howto table if needed. */
2140 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2143 type = ELF64_R_TYPE (dst->r_info);
2144 if (type >= (sizeof (ppc64_elf_howto_table)
2145 / sizeof (ppc64_elf_howto_table[0])))
2147 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2149 type = R_PPC64_NONE;
2151 cache_ptr->howto = ppc64_elf_howto_table[type];
2154 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2156 static bfd_reloc_status_type
2157 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2158 void *data, asection *input_section,
2159 bfd *output_bfd, char **error_message)
2161 /* If this is a relocatable link (output_bfd test tells us), just
2162 call the generic function. Any adjustment will be done at final
2164 if (output_bfd != NULL)
2165 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2166 input_section, output_bfd, error_message);
2168 /* Adjust the addend for sign extension of the low 16 bits.
2169 We won't actually be using the low 16 bits, so trashing them
2171 reloc_entry->addend += 0x8000;
2172 return bfd_reloc_continue;
2175 static bfd_reloc_status_type
2176 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2177 void *data, asection *input_section,
2178 bfd *output_bfd, char **error_message)
2180 if (output_bfd != NULL)
2181 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2182 input_section, output_bfd, error_message);
2184 if (strcmp (symbol->section->name, ".opd") == 0
2185 && (symbol->section->owner->flags & DYNAMIC) == 0)
2187 bfd_vma dest = opd_entry_value (symbol->section,
2188 symbol->value + reloc_entry->addend,
2190 if (dest != (bfd_vma) -1)
2191 reloc_entry->addend = dest - (symbol->value
2192 + symbol->section->output_section->vma
2193 + symbol->section->output_offset);
2195 return bfd_reloc_continue;
2198 static bfd_reloc_status_type
2199 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2200 void *data, asection *input_section,
2201 bfd *output_bfd, char **error_message)
2204 enum elf_ppc64_reloc_type r_type;
2205 bfd_size_type octets;
2206 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2207 bfd_boolean is_power4 = FALSE;
2209 /* If this is a relocatable link (output_bfd test tells us), just
2210 call the generic function. Any adjustment will be done at final
2212 if (output_bfd != NULL)
2213 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2214 input_section, output_bfd, error_message);
2216 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2217 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2218 insn &= ~(0x01 << 21);
2219 r_type = reloc_entry->howto->type;
2220 if (r_type == R_PPC64_ADDR14_BRTAKEN
2221 || r_type == R_PPC64_REL14_BRTAKEN)
2222 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2226 /* Set 'a' bit. This is 0b00010 in BO field for branch
2227 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2228 for branch on CTR insns (BO == 1a00t or 1a01t). */
2229 if ((insn & (0x14 << 21)) == (0x04 << 21))
2231 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2241 if (!bfd_is_com_section (symbol->section))
2242 target = symbol->value;
2243 target += symbol->section->output_section->vma;
2244 target += symbol->section->output_offset;
2245 target += reloc_entry->addend;
2247 from = (reloc_entry->address
2248 + input_section->output_offset
2249 + input_section->output_section->vma);
2251 /* Invert 'y' bit if not the default. */
2252 if ((bfd_signed_vma) (target - from) < 0)
2255 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2257 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2258 input_section, output_bfd, error_message);
2261 static bfd_reloc_status_type
2262 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2263 void *data, asection *input_section,
2264 bfd *output_bfd, char **error_message)
2266 /* If this is a relocatable link (output_bfd test tells us), just
2267 call the generic function. Any adjustment will be done at final
2269 if (output_bfd != NULL)
2270 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2271 input_section, output_bfd, error_message);
2273 /* Subtract the symbol section base address. */
2274 reloc_entry->addend -= symbol->section->output_section->vma;
2275 return bfd_reloc_continue;
2278 static bfd_reloc_status_type
2279 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2280 void *data, asection *input_section,
2281 bfd *output_bfd, char **error_message)
2283 /* If this is a relocatable link (output_bfd test tells us), just
2284 call the generic function. Any adjustment will be done at final
2286 if (output_bfd != NULL)
2287 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2288 input_section, output_bfd, error_message);
2290 /* Subtract the symbol section base address. */
2291 reloc_entry->addend -= symbol->section->output_section->vma;
2293 /* Adjust the addend for sign extension of the low 16 bits. */
2294 reloc_entry->addend += 0x8000;
2295 return bfd_reloc_continue;
2298 static bfd_reloc_status_type
2299 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2300 void *data, asection *input_section,
2301 bfd *output_bfd, char **error_message)
2305 /* If this is a relocatable link (output_bfd test tells us), just
2306 call the generic function. Any adjustment will be done at final
2308 if (output_bfd != NULL)
2309 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2310 input_section, output_bfd, error_message);
2312 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2314 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2316 /* Subtract the TOC base address. */
2317 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2318 return bfd_reloc_continue;
2321 static bfd_reloc_status_type
2322 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2323 void *data, asection *input_section,
2324 bfd *output_bfd, char **error_message)
2328 /* If this is a relocatable link (output_bfd test tells us), just
2329 call the generic function. Any adjustment will be done at final
2331 if (output_bfd != NULL)
2332 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2333 input_section, output_bfd, error_message);
2335 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2337 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2339 /* Subtract the TOC base address. */
2340 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2342 /* Adjust the addend for sign extension of the low 16 bits. */
2343 reloc_entry->addend += 0x8000;
2344 return bfd_reloc_continue;
2347 static bfd_reloc_status_type
2348 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
2353 bfd_size_type octets;
2355 /* If this is a relocatable link (output_bfd test tells us), just
2356 call the generic function. Any adjustment will be done at final
2358 if (output_bfd != NULL)
2359 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2360 input_section, output_bfd, error_message);
2362 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2364 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2366 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2367 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2368 return bfd_reloc_ok;
2371 static bfd_reloc_status_type
2372 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2373 void *data, asection *input_section,
2374 bfd *output_bfd, char **error_message)
2376 /* If this is a relocatable link (output_bfd test tells us), just
2377 call the generic function. Any adjustment will be done at final
2379 if (output_bfd != NULL)
2380 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2381 input_section, output_bfd, error_message);
2383 if (error_message != NULL)
2385 static char buf[60];
2386 sprintf (buf, "generic linker can't handle %s",
2387 reloc_entry->howto->name);
2388 *error_message = buf;
2390 return bfd_reloc_dangerous;
2393 struct ppc64_elf_obj_tdata
2395 struct elf_obj_tdata elf;
2397 /* Shortcuts to dynamic linker sections. */
2401 /* Used during garbage collection. We attach global symbols defined
2402 on removed .opd entries to this section so that the sym is removed. */
2403 asection *deleted_section;
2405 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2406 sections means we potentially need one of these for each input bfd. */
2408 bfd_signed_vma refcount;
2412 /* A copy of relocs before they are modified for --emit-relocs. */
2413 Elf_Internal_Rela *opd_relocs;
2416 #define ppc64_elf_tdata(bfd) \
2417 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2419 #define ppc64_tlsld_got(bfd) \
2420 (&ppc64_elf_tdata (bfd)->tlsld_got)
2422 /* Override the generic function because we store some extras. */
2425 ppc64_elf_mkobject (bfd *abfd)
2427 if (abfd->tdata.any == NULL)
2429 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2430 abfd->tdata.any = bfd_zalloc (abfd, amt);
2431 if (abfd->tdata.any == NULL)
2434 return bfd_elf_mkobject (abfd);
2437 /* Return 1 if target is one of ours. */
2440 is_ppc64_elf_target (const struct bfd_target *targ)
2442 extern const bfd_target bfd_elf64_powerpc_vec;
2443 extern const bfd_target bfd_elf64_powerpcle_vec;
2445 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2448 /* Fix bad default arch selected for a 64 bit input bfd when the
2449 default is 32 bit. */
2452 ppc64_elf_object_p (bfd *abfd)
2454 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2456 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2458 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2460 /* Relies on arch after 32 bit default being 64 bit default. */
2461 abfd->arch_info = abfd->arch_info->next;
2462 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2468 /* Support for core dump NOTE sections. */
2471 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2473 size_t offset, size;
2475 if (note->descsz != 504)
2479 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2482 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2488 /* Make a ".reg/999" section. */
2489 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2490 size, note->descpos + offset);
2494 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2496 if (note->descsz != 136)
2499 elf_tdata (abfd)->core_program
2500 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2501 elf_tdata (abfd)->core_command
2502 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2508 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2521 va_start (ap, note_type);
2522 memset (data, 0, 40);
2523 strncpy (data + 40, va_arg (ap, const char *), 16);
2524 strncpy (data + 56, va_arg (ap, const char *), 80);
2526 return elfcore_write_note (abfd, buf, bufsiz,
2527 "CORE", note_type, data, sizeof (data));
2538 va_start (ap, note_type);
2539 memset (data, 0, 112);
2540 pid = va_arg (ap, long);
2541 bfd_put_32 (abfd, pid, data + 32);
2542 cursig = va_arg (ap, int);
2543 bfd_put_16 (abfd, cursig, data + 12);
2544 greg = va_arg (ap, const void *);
2545 memcpy (data + 112, greg, 384);
2546 memset (data + 496, 0, 8);
2548 return elfcore_write_note (abfd, buf, bufsiz,
2549 "CORE", note_type, data, sizeof (data));
2554 /* Merge backend specific data from an object file to the output
2555 object file when linking. */
2558 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2560 /* Check if we have the same endianess. */
2561 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2562 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2563 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2567 if (bfd_big_endian (ibfd))
2568 msg = _("%B: compiled for a big endian system "
2569 "and target is little endian");
2571 msg = _("%B: compiled for a little endian system "
2572 "and target is big endian");
2574 (*_bfd_error_handler) (msg, ibfd);
2576 bfd_set_error (bfd_error_wrong_format);
2583 /* Add extra PPC sections. */
2585 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2587 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2588 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2590 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2591 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2592 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2593 { NULL, 0, 0, 0, 0 }
2596 enum _ppc64_sec_type {
2602 struct _ppc64_elf_section_data
2604 struct bfd_elf_section_data elf;
2606 /* An array with one entry for each opd function descriptor. */
2609 /* Points to the function code section for local opd entries. */
2610 asection **opd_func_sec;
2611 /* After editing .opd, adjust references to opd local syms. */
2614 /* An array for toc sections, indexed by offset/8.
2615 Specifies the relocation symbol index used at a given toc offset. */
2619 enum _ppc64_sec_type sec_type:2;
2621 /* Flag set when small branches are detected. Used to
2622 select suitable defaults for the stub group size. */
2623 unsigned int has_14bit_branch:1;
2626 #define ppc64_elf_section_data(sec) \
2627 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2630 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2632 if (!sec->used_by_bfd)
2634 struct _ppc64_elf_section_data *sdata;
2635 bfd_size_type amt = sizeof (*sdata);
2637 sdata = bfd_zalloc (abfd, amt);
2640 sec->used_by_bfd = sdata;
2643 return _bfd_elf_new_section_hook (abfd, sec);
2647 get_opd_info (asection * sec)
2650 && ppc64_elf_section_data (sec) != NULL
2651 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2652 return ppc64_elf_section_data (sec)->u.opd_adjust;
2656 /* Parameters for the qsort hook. */
2657 static asection *synthetic_opd;
2658 static bfd_boolean synthetic_relocatable;
2660 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2663 compare_symbols (const void *ap, const void *bp)
2665 const asymbol *a = * (const asymbol **) ap;
2666 const asymbol *b = * (const asymbol **) bp;
2668 /* Section symbols first. */
2669 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2671 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2674 /* then .opd symbols. */
2675 if (a->section == synthetic_opd && b->section != synthetic_opd)
2677 if (a->section != synthetic_opd && b->section == synthetic_opd)
2680 /* then other code symbols. */
2681 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2682 == (SEC_CODE | SEC_ALLOC)
2683 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2684 != (SEC_CODE | SEC_ALLOC))
2687 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2688 != (SEC_CODE | SEC_ALLOC)
2689 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2690 == (SEC_CODE | SEC_ALLOC))
2693 if (synthetic_relocatable)
2695 if (a->section->id < b->section->id)
2698 if (a->section->id > b->section->id)
2702 if (a->value + a->section->vma < b->value + b->section->vma)
2705 if (a->value + a->section->vma > b->value + b->section->vma)
2708 /* For syms with the same value, prefer strong dynamic global function
2709 syms over other syms. */
2710 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2713 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2716 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2719 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2722 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2725 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2728 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2731 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2737 /* Search SYMS for a symbol of the given VALUE. */
2740 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2748 mid = (lo + hi) >> 1;
2749 if (syms[mid]->value + syms[mid]->section->vma < value)
2751 else if (syms[mid]->value + syms[mid]->section->vma > value)
2761 mid = (lo + hi) >> 1;
2762 if (syms[mid]->section->id < id)
2764 else if (syms[mid]->section->id > id)
2766 else if (syms[mid]->value < value)
2768 else if (syms[mid]->value > value)
2777 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2781 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2782 long static_count, asymbol **static_syms,
2783 long dyn_count, asymbol **dyn_syms,
2790 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2792 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2797 opd = bfd_get_section_by_name (abfd, ".opd");
2801 symcount = static_count;
2803 symcount += dyn_count;
2807 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2811 if (!relocatable && static_count != 0 && dyn_count != 0)
2813 /* Use both symbol tables. */
2814 memcpy (syms, static_syms, static_count * sizeof (*syms));
2815 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2817 else if (!relocatable && static_count == 0)
2818 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2820 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2822 synthetic_opd = opd;
2823 synthetic_relocatable = relocatable;
2824 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2826 if (!relocatable && symcount > 1)
2829 /* Trim duplicate syms, since we may have merged the normal and
2830 dynamic symbols. Actually, we only care about syms that have
2831 different values, so trim any with the same value. */
2832 for (i = 1, j = 1; i < symcount; ++i)
2833 if (syms[i - 1]->value + syms[i - 1]->section->vma
2834 != syms[i]->value + syms[i]->section->vma)
2835 syms[j++] = syms[i];
2840 if (syms[i]->section == opd)
2844 for (; i < symcount; ++i)
2845 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2846 != (SEC_CODE | SEC_ALLOC))
2847 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2851 for (; i < symcount; ++i)
2852 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2856 for (; i < symcount; ++i)
2857 if (syms[i]->section != opd)
2861 for (; i < symcount; ++i)
2862 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2863 != (SEC_CODE | SEC_ALLOC))
2868 if (opdsymend == secsymend)
2873 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2878 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2879 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2883 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2890 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2894 while (r < opd->relocation + relcount
2895 && r->address < syms[i]->value + opd->vma)
2898 if (r == opd->relocation + relcount)
2901 if (r->address != syms[i]->value + opd->vma)
2904 if (r->howto->type != R_PPC64_ADDR64)
2907 sym = *r->sym_ptr_ptr;
2908 if (!sym_exists_at (syms, opdsymend, symcount,
2909 sym->section->id, sym->value + r->addend))
2912 size += sizeof (asymbol);
2913 size += strlen (syms[i]->name) + 2;
2917 s = *ret = bfd_malloc (size);
2924 names = (char *) (s + count);
2926 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2930 while (r < opd->relocation + relcount
2931 && r->address < syms[i]->value + opd->vma)
2934 if (r == opd->relocation + relcount)
2937 if (r->address != syms[i]->value + opd->vma)
2940 if (r->howto->type != R_PPC64_ADDR64)
2943 sym = *r->sym_ptr_ptr;
2944 if (!sym_exists_at (syms, opdsymend, symcount,
2945 sym->section->id, sym->value + r->addend))
2950 s->section = sym->section;
2951 s->value = sym->value + r->addend;
2954 len = strlen (syms[i]->name);
2955 memcpy (names, syms[i]->name, len + 1);
2966 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2970 free_contents_and_exit:
2978 for (i = secsymend; i < opdsymend; ++i)
2982 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2983 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2986 size += sizeof (asymbol);
2987 size += strlen (syms[i]->name) + 2;
2991 s = *ret = bfd_malloc (size);
2993 goto free_contents_and_exit;
2995 names = (char *) (s + count);
2997 for (i = secsymend; i < opdsymend; ++i)
3001 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3002 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3006 asection *sec = abfd->sections;
3013 long mid = (lo + hi) >> 1;
3014 if (syms[mid]->section->vma < ent)
3016 else if (syms[mid]->section->vma > ent)
3020 sec = syms[mid]->section;
3025 if (lo >= hi && lo > codesecsym)
3026 sec = syms[lo - 1]->section;
3028 for (; sec != NULL; sec = sec->next)
3032 if ((sec->flags & SEC_ALLOC) == 0
3033 || (sec->flags & SEC_LOAD) == 0)
3035 if ((sec->flags & SEC_CODE) != 0)
3038 s->value = ent - s->section->vma;
3041 len = strlen (syms[i]->name);
3042 memcpy (names, syms[i]->name, len + 1);
3055 /* The following functions are specific to the ELF linker, while
3056 functions above are used generally. Those named ppc64_elf_* are
3057 called by the main ELF linker code. They appear in this file more
3058 or less in the order in which they are called. eg.
3059 ppc64_elf_check_relocs is called early in the link process,
3060 ppc64_elf_finish_dynamic_sections is one of the last functions
3063 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3064 functions have both a function code symbol and a function descriptor
3065 symbol. A call to foo in a relocatable object file looks like:
3072 The function definition in another object file might be:
3076 . .quad .TOC.@tocbase
3082 When the linker resolves the call during a static link, the branch
3083 unsurprisingly just goes to .foo and the .opd information is unused.
3084 If the function definition is in a shared library, things are a little
3085 different: The call goes via a plt call stub, the opd information gets
3086 copied to the plt, and the linker patches the nop.
3094 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3095 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3096 . std 2,40(1) # this is the general idea
3104 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3106 The "reloc ()" notation is supposed to indicate that the linker emits
3107 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3110 What are the difficulties here? Well, firstly, the relocations
3111 examined by the linker in check_relocs are against the function code
3112 sym .foo, while the dynamic relocation in the plt is emitted against
3113 the function descriptor symbol, foo. Somewhere along the line, we need
3114 to carefully copy dynamic link information from one symbol to the other.
3115 Secondly, the generic part of the elf linker will make .foo a dynamic
3116 symbol as is normal for most other backends. We need foo dynamic
3117 instead, at least for an application final link. However, when
3118 creating a shared library containing foo, we need to have both symbols
3119 dynamic so that references to .foo are satisfied during the early
3120 stages of linking. Otherwise the linker might decide to pull in a
3121 definition from some other object, eg. a static library.
3123 Update: As of August 2004, we support a new convention. Function
3124 calls may use the function descriptor symbol, ie. "bl foo". This
3125 behaves exactly as "bl .foo". */
3127 /* The linker needs to keep track of the number of relocs that it
3128 decides to copy as dynamic relocs in check_relocs for each symbol.
3129 This is so that it can later discard them if they are found to be
3130 unnecessary. We store the information in a field extending the
3131 regular ELF linker hash table. */
3133 struct ppc_dyn_relocs
3135 struct ppc_dyn_relocs *next;
3137 /* The input section of the reloc. */
3140 /* Total number of relocs copied for the input section. */
3141 bfd_size_type count;
3143 /* Number of pc-relative relocs copied for the input section. */
3144 bfd_size_type pc_count;
3147 /* Track GOT entries needed for a given symbol. We might need more
3148 than one got entry per symbol. */
3151 struct got_entry *next;
3153 /* The symbol addend that we'll be placing in the GOT. */
3156 /* Unlike other ELF targets, we use separate GOT entries for the same
3157 symbol referenced from different input files. This is to support
3158 automatic multiple TOC/GOT sections, where the TOC base can vary
3159 from one input file to another.
3161 Point to the BFD owning this GOT entry. */
3164 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3165 TLS_TPREL or TLS_DTPREL for tls entries. */
3168 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3171 bfd_signed_vma refcount;
3176 /* The same for PLT. */
3179 struct plt_entry *next;
3185 bfd_signed_vma refcount;
3190 /* Of those relocs that might be copied as dynamic relocs, this macro
3191 selects those that must be copied when linking a shared library,
3192 even when the symbol is local. */
3194 #define MUST_BE_DYN_RELOC(RTYPE) \
3195 ((RTYPE) != R_PPC64_REL32 \
3196 && (RTYPE) != R_PPC64_REL64 \
3197 && (RTYPE) != R_PPC64_REL30)
3199 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3200 copying dynamic variables from a shared lib into an app's dynbss
3201 section, and instead use a dynamic relocation to point into the
3202 shared lib. With code that gcc generates, it's vital that this be
3203 enabled; In the PowerPC64 ABI, the address of a function is actually
3204 the address of a function descriptor, which resides in the .opd
3205 section. gcc uses the descriptor directly rather than going via the
3206 GOT as some other ABI's do, which means that initialized function
3207 pointers must reference the descriptor. Thus, a function pointer
3208 initialized to the address of a function in a shared library will
3209 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3210 redefines the function descriptor symbol to point to the copy. This
3211 presents a problem as a plt entry for that function is also
3212 initialized from the function descriptor symbol and the copy reloc
3213 may not be initialized first. */
3214 #define ELIMINATE_COPY_RELOCS 1
3216 /* Section name for stubs is the associated section name plus this
3218 #define STUB_SUFFIX ".stub"
3221 ppc_stub_long_branch:
3222 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3223 destination, but a 24 bit branch in a stub section will reach.
3226 ppc_stub_plt_branch:
3227 Similar to the above, but a 24 bit branch in the stub section won't
3228 reach its destination.
3229 . addis %r12,%r2,xxx@toc@ha
3230 . ld %r11,xxx@toc@l(%r12)
3235 Used to call a function in a shared library. If it so happens that
3236 the plt entry referenced crosses a 64k boundary, then an extra
3237 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3238 xxx+16 as appropriate.
3239 . addis %r12,%r2,xxx@toc@ha
3241 . ld %r11,xxx+0@toc@l(%r12)
3242 . ld %r2,xxx+8@toc@l(%r12)
3244 . ld %r11,xxx+16@toc@l(%r12)
3247 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3248 code to adjust the value and save r2 to support multiple toc sections.
3249 A ppc_stub_long_branch with an r2 offset looks like:
3251 . addis %r2,%r2,off@ha
3252 . addi %r2,%r2,off@l
3255 A ppc_stub_plt_branch with an r2 offset looks like:
3257 . addis %r12,%r2,xxx@toc@ha
3258 . ld %r11,xxx@toc@l(%r12)
3259 . addis %r2,%r2,off@ha
3260 . addi %r2,%r2,off@l
3265 enum ppc_stub_type {
3267 ppc_stub_long_branch,
3268 ppc_stub_long_branch_r2off,
3269 ppc_stub_plt_branch,
3270 ppc_stub_plt_branch_r2off,
3274 struct ppc_stub_hash_entry {
3276 /* Base hash table entry structure. */
3277 struct bfd_hash_entry root;
3279 enum ppc_stub_type stub_type;
3281 /* The stub section. */
3284 /* Offset within stub_sec of the beginning of this stub. */
3285 bfd_vma stub_offset;
3287 /* Given the symbol's value and its section we can determine its final
3288 value when building the stubs (so the stub knows where to jump. */
3289 bfd_vma target_value;
3290 asection *target_section;
3292 /* The symbol table entry, if any, that this was derived from. */
3293 struct ppc_link_hash_entry *h;
3295 /* And the reloc addend that this was derived from. */
3298 /* Where this stub is being called from, or, in the case of combined
3299 stub sections, the first input section in the group. */
3303 struct ppc_branch_hash_entry {
3305 /* Base hash table entry structure. */
3306 struct bfd_hash_entry root;
3308 /* Offset within branch lookup table. */
3309 unsigned int offset;
3311 /* Generation marker. */
3315 struct ppc_link_hash_entry
3317 struct elf_link_hash_entry elf;
3320 /* A pointer to the most recently used stub hash entry against this
3322 struct ppc_stub_hash_entry *stub_cache;
3324 /* A pointer to the next symbol starting with a '.' */
3325 struct ppc_link_hash_entry *next_dot_sym;
3328 /* Track dynamic relocs copied for this symbol. */
3329 struct ppc_dyn_relocs *dyn_relocs;
3331 /* Link between function code and descriptor symbols. */
3332 struct ppc_link_hash_entry *oh;
3334 /* Flag function code and descriptor symbols. */
3335 unsigned int is_func:1;
3336 unsigned int is_func_descriptor:1;
3337 unsigned int fake:1;
3339 /* Whether global opd/toc sym has been adjusted or not.
3340 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3341 should be set for all globals defined in any opd/toc section. */
3342 unsigned int adjust_done:1;
3344 /* Set if we twiddled this symbol to weak at some stage. */
3345 unsigned int was_undefined:1;
3347 /* Contexts in which symbol is used in the GOT (or TOC).
3348 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3349 corresponding relocs are encountered during check_relocs.
3350 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3351 indicate the corresponding GOT entry type is not needed.
3352 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3353 a TPREL one. We use a separate flag rather than setting TPREL
3354 just for convenience in distinguishing the two cases. */
3355 #define TLS_GD 1 /* GD reloc. */
3356 #define TLS_LD 2 /* LD reloc. */
3357 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3358 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3359 #define TLS_TLS 16 /* Any TLS reloc. */
3360 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3361 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3365 /* ppc64 ELF linker hash table. */
3367 struct ppc_link_hash_table
3369 struct elf_link_hash_table elf;
3371 /* The stub hash table. */
3372 struct bfd_hash_table stub_hash_table;
3374 /* Another hash table for plt_branch stubs. */
3375 struct bfd_hash_table branch_hash_table;
3377 /* Linker stub bfd. */
3380 /* Linker call-backs. */
3381 asection * (*add_stub_section) (const char *, asection *);
3382 void (*layout_sections_again) (void);
3384 /* Array to keep track of which stub sections have been created, and
3385 information on stub grouping. */
3387 /* This is the section to which stubs in the group will be attached. */
3389 /* The stub section. */
3391 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3395 /* Temp used when calculating TOC pointers. */
3398 /* Highest input section id. */
3401 /* Highest output section index. */
3404 /* Used when adding symbols. */
3405 struct ppc_link_hash_entry *dot_syms;
3407 /* List of input sections for each output section. */
3408 asection **input_list;
3410 /* Short-cuts to get to dynamic linker sections. */
3421 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3422 struct ppc_link_hash_entry *tls_get_addr;
3423 struct ppc_link_hash_entry *tls_get_addr_fd;
3426 unsigned long stub_count[ppc_stub_plt_call];
3428 /* Number of stubs against global syms. */
3429 unsigned long stub_globals;
3431 /* Set if we should emit symbols for stubs. */
3432 unsigned int emit_stub_syms:1;
3434 /* Support for multiple toc sections. */
3435 unsigned int no_multi_toc:1;
3436 unsigned int multi_toc_needed:1;
3439 unsigned int stub_error:1;
3441 /* Temp used by ppc64_elf_check_directives. */
3442 unsigned int twiddled_syms:1;
3444 /* Incremented every time we size stubs. */
3445 unsigned int stub_iteration;
3447 /* Small local sym to section mapping cache. */
3448 struct sym_sec_cache sym_sec;
3451 /* Rename some of the generic section flags to better document how they
3453 #define has_toc_reloc has_gp_reloc
3454 #define makes_toc_func_call need_finalize_relax
3455 #define call_check_in_progress reloc_done
3457 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3459 #define ppc_hash_table(p) \
3460 ((struct ppc_link_hash_table *) ((p)->hash))
3462 #define ppc_stub_hash_lookup(table, string, create, copy) \
3463 ((struct ppc_stub_hash_entry *) \
3464 bfd_hash_lookup ((table), (string), (create), (copy)))
3466 #define ppc_branch_hash_lookup(table, string, create, copy) \
3467 ((struct ppc_branch_hash_entry *) \
3468 bfd_hash_lookup ((table), (string), (create), (copy)))
3470 /* Create an entry in the stub hash table. */
3472 static struct bfd_hash_entry *
3473 stub_hash_newfunc (struct bfd_hash_entry *entry,
3474 struct bfd_hash_table *table,
3477 /* Allocate the structure if it has not already been allocated by a
3481 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3486 /* Call the allocation method of the superclass. */
3487 entry = bfd_hash_newfunc (entry, table, string);
3490 struct ppc_stub_hash_entry *eh;
3492 /* Initialize the local fields. */
3493 eh = (struct ppc_stub_hash_entry *) entry;
3494 eh->stub_type = ppc_stub_none;
3495 eh->stub_sec = NULL;
3496 eh->stub_offset = 0;
3497 eh->target_value = 0;
3498 eh->target_section = NULL;
3506 /* Create an entry in the branch hash table. */
3508 static struct bfd_hash_entry *
3509 branch_hash_newfunc (struct bfd_hash_entry *entry,
3510 struct bfd_hash_table *table,
3513 /* Allocate the structure if it has not already been allocated by a
3517 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3522 /* Call the allocation method of the superclass. */
3523 entry = bfd_hash_newfunc (entry, table, string);
3526 struct ppc_branch_hash_entry *eh;
3528 /* Initialize the local fields. */
3529 eh = (struct ppc_branch_hash_entry *) entry;
3537 /* Create an entry in a ppc64 ELF linker hash table. */
3539 static struct bfd_hash_entry *
3540 link_hash_newfunc (struct bfd_hash_entry *entry,
3541 struct bfd_hash_table *table,
3544 /* Allocate the structure if it has not already been allocated by a
3548 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3553 /* Call the allocation method of the superclass. */
3554 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3557 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3559 memset (&eh->u.stub_cache, 0,
3560 (sizeof (struct ppc_link_hash_entry)
3561 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3563 /* When making function calls, old ABI code references function entry
3564 points (dot symbols), while new ABI code references the function
3565 descriptor symbol. We need to make any combination of reference and
3566 definition work together, without breaking archive linking.
3568 For a defined function "foo" and an undefined call to "bar":
3569 An old object defines "foo" and ".foo", references ".bar" (possibly
3571 A new object defines "foo" and references "bar".
3573 A new object thus has no problem with its undefined symbols being
3574 satisfied by definitions in an old object. On the other hand, the
3575 old object won't have ".bar" satisfied by a new object.
3577 Keep a list of newly added dot-symbols. */
3579 if (string[0] == '.')
3581 struct ppc_link_hash_table *htab;
3583 htab = (struct ppc_link_hash_table *) table;
3584 eh->u.next_dot_sym = htab->dot_syms;
3585 htab->dot_syms = eh;
3592 /* Create a ppc64 ELF linker hash table. */
3594 static struct bfd_link_hash_table *
3595 ppc64_elf_link_hash_table_create (bfd *abfd)
3597 struct ppc_link_hash_table *htab;
3598 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3600 htab = bfd_zmalloc (amt);
3604 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3605 sizeof (struct ppc_link_hash_entry)))
3611 /* Init the stub hash table too. */
3612 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3613 sizeof (struct ppc_stub_hash_entry)))
3616 /* And the branch hash table. */
3617 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3618 sizeof (struct ppc_branch_hash_entry)))
3621 /* Initializing two fields of the union is just cosmetic. We really
3622 only care about glist, but when compiled on a 32-bit host the
3623 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3624 debugger inspection of these fields look nicer. */
3625 htab->elf.init_got_refcount.refcount = 0;
3626 htab->elf.init_got_refcount.glist = NULL;
3627 htab->elf.init_plt_refcount.refcount = 0;
3628 htab->elf.init_plt_refcount.glist = NULL;
3629 htab->elf.init_got_offset.offset = 0;
3630 htab->elf.init_got_offset.glist = NULL;
3631 htab->elf.init_plt_offset.offset = 0;
3632 htab->elf.init_plt_offset.glist = NULL;
3634 return &htab->elf.root;
3637 /* Free the derived linker hash table. */
3640 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3642 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3644 bfd_hash_table_free (&ret->stub_hash_table);
3645 bfd_hash_table_free (&ret->branch_hash_table);
3646 _bfd_generic_link_hash_table_free (hash);
3649 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3652 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3654 struct ppc_link_hash_table *htab;
3656 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3658 /* Always hook our dynamic sections into the first bfd, which is the
3659 linker created stub bfd. This ensures that the GOT header is at
3660 the start of the output TOC section. */
3661 htab = ppc_hash_table (info);
3662 htab->stub_bfd = abfd;
3663 htab->elf.dynobj = abfd;
3666 /* Build a name for an entry in the stub hash table. */
3669 ppc_stub_name (const asection *input_section,
3670 const asection *sym_sec,
3671 const struct ppc_link_hash_entry *h,
3672 const Elf_Internal_Rela *rel)
3677 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3678 offsets from a sym as a branch target? In fact, we could
3679 probably assume the addend is always zero. */
3680 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3684 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3685 stub_name = bfd_malloc (len);
3686 if (stub_name == NULL)
3689 sprintf (stub_name, "%08x.%s+%x",
3690 input_section->id & 0xffffffff,
3691 h->elf.root.root.string,
3692 (int) rel->r_addend & 0xffffffff);
3696 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3697 stub_name = bfd_malloc (len);
3698 if (stub_name == NULL)
3701 sprintf (stub_name, "%08x.%x:%x+%x",
3702 input_section->id & 0xffffffff,
3703 sym_sec->id & 0xffffffff,
3704 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3705 (int) rel->r_addend & 0xffffffff);
3707 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3708 stub_name[len - 2] = 0;
3712 /* Look up an entry in the stub hash. Stub entries are cached because
3713 creating the stub name takes a bit of time. */
3715 static struct ppc_stub_hash_entry *
3716 ppc_get_stub_entry (const asection *input_section,
3717 const asection *sym_sec,
3718 struct ppc_link_hash_entry *h,
3719 const Elf_Internal_Rela *rel,
3720 struct ppc_link_hash_table *htab)
3722 struct ppc_stub_hash_entry *stub_entry;
3723 const asection *id_sec;
3725 /* If this input section is part of a group of sections sharing one
3726 stub section, then use the id of the first section in the group.
3727 Stub names need to include a section id, as there may well be
3728 more than one stub used to reach say, printf, and we need to
3729 distinguish between them. */
3730 id_sec = htab->stub_group[input_section->id].link_sec;
3732 if (h != NULL && h->u.stub_cache != NULL
3733 && h->u.stub_cache->h == h
3734 && h->u.stub_cache->id_sec == id_sec)
3736 stub_entry = h->u.stub_cache;
3742 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3743 if (stub_name == NULL)
3746 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3747 stub_name, FALSE, FALSE);
3749 h->u.stub_cache = stub_entry;
3757 /* Add a new stub entry to the stub hash. Not all fields of the new
3758 stub entry are initialised. */
3760 static struct ppc_stub_hash_entry *
3761 ppc_add_stub (const char *stub_name,
3763 struct ppc_link_hash_table *htab)
3767 struct ppc_stub_hash_entry *stub_entry;
3769 link_sec = htab->stub_group[section->id].link_sec;
3770 stub_sec = htab->stub_group[section->id].stub_sec;
3771 if (stub_sec == NULL)
3773 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3774 if (stub_sec == NULL)
3780 namelen = strlen (link_sec->name);
3781 len = namelen + sizeof (STUB_SUFFIX);
3782 s_name = bfd_alloc (htab->stub_bfd, len);
3786 memcpy (s_name, link_sec->name, namelen);
3787 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3788 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3789 if (stub_sec == NULL)
3791 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3793 htab->stub_group[section->id].stub_sec = stub_sec;
3796 /* Enter this entry into the linker stub hash table. */
3797 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3799 if (stub_entry == NULL)
3801 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3802 section->owner, stub_name);
3806 stub_entry->stub_sec = stub_sec;
3807 stub_entry->stub_offset = 0;
3808 stub_entry->id_sec = link_sec;
3812 /* Create sections for linker generated code. */
3815 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3817 struct ppc_link_hash_table *htab;
3820 htab = ppc_hash_table (info);
3822 /* Create .sfpr for code to save and restore fp regs. */
3823 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3824 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3825 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3827 if (htab->sfpr == NULL
3828 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3831 /* Create .glink for lazy dynamic linking support. */
3832 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3834 if (htab->glink == NULL
3835 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
3838 /* Create branch lookup table for plt_branch stubs. */
3839 flags = (SEC_ALLOC | SEC_LOAD
3840 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3841 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3843 if (htab->brlt == NULL
3844 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3850 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3851 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3852 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3856 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3862 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3863 not already done. */
3866 create_got_section (bfd *abfd, struct bfd_link_info *info)
3868 asection *got, *relgot;
3870 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3874 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3877 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3882 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3883 | SEC_LINKER_CREATED);
3885 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
3887 || !bfd_set_section_alignment (abfd, got, 3))
3890 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3891 flags | SEC_READONLY);
3893 || ! bfd_set_section_alignment (abfd, relgot, 3))
3896 ppc64_elf_tdata (abfd)->got = got;
3897 ppc64_elf_tdata (abfd)->relgot = relgot;
3901 /* Create the dynamic sections, and set up shortcuts. */
3904 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3906 struct ppc_link_hash_table *htab;
3908 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3911 htab = ppc_hash_table (info);
3913 htab->got = bfd_get_section_by_name (dynobj, ".got");
3914 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3915 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3916 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3918 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3920 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3921 || (!info->shared && !htab->relbss))
3927 /* Merge PLT info on FROM with that on TO. */
3930 move_plt_plist (struct ppc_link_hash_entry *from,
3931 struct ppc_link_hash_entry *to)
3933 if (from->elf.plt.plist != NULL)
3935 if (to->elf.plt.plist != NULL)
3937 struct plt_entry **entp;
3938 struct plt_entry *ent;
3940 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3942 struct plt_entry *dent;
3944 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3945 if (dent->addend == ent->addend)
3947 dent->plt.refcount += ent->plt.refcount;
3954 *entp = to->elf.plt.plist;
3957 to->elf.plt.plist = from->elf.plt.plist;
3958 from->elf.plt.plist = NULL;
3962 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3965 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3966 struct elf_link_hash_entry *dir,
3967 struct elf_link_hash_entry *ind)
3969 struct ppc_link_hash_entry *edir, *eind;
3971 edir = (struct ppc_link_hash_entry *) dir;
3972 eind = (struct ppc_link_hash_entry *) ind;
3974 /* Copy over any dynamic relocs we may have on the indirect sym. */
3975 if (eind->dyn_relocs != NULL)
3977 if (edir->dyn_relocs != NULL)
3979 struct ppc_dyn_relocs **pp;
3980 struct ppc_dyn_relocs *p;
3982 /* Add reloc counts against the indirect sym to the direct sym
3983 list. Merge any entries against the same section. */
3984 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3986 struct ppc_dyn_relocs *q;
3988 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3989 if (q->sec == p->sec)
3991 q->pc_count += p->pc_count;
3992 q->count += p->count;
3999 *pp = edir->dyn_relocs;
4002 edir->dyn_relocs = eind->dyn_relocs;
4003 eind->dyn_relocs = NULL;
4006 edir->is_func |= eind->is_func;
4007 edir->is_func_descriptor |= eind->is_func_descriptor;
4008 edir->tls_mask |= eind->tls_mask;
4010 /* If called to transfer flags for a weakdef during processing
4011 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4012 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4013 if (!(ELIMINATE_COPY_RELOCS
4014 && eind->elf.root.type != bfd_link_hash_indirect
4015 && edir->elf.dynamic_adjusted))
4016 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4018 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4019 edir->elf.ref_regular |= eind->elf.ref_regular;
4020 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4021 edir->elf.needs_plt |= eind->elf.needs_plt;
4023 /* If we were called to copy over info for a weak sym, that's all. */
4024 if (eind->elf.root.type != bfd_link_hash_indirect)
4027 /* Copy over got entries that we may have already seen to the
4028 symbol which just became indirect. */
4029 if (eind->elf.got.glist != NULL)
4031 if (edir->elf.got.glist != NULL)
4033 struct got_entry **entp;
4034 struct got_entry *ent;
4036 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4038 struct got_entry *dent;
4040 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4041 if (dent->addend == ent->addend
4042 && dent->owner == ent->owner
4043 && dent->tls_type == ent->tls_type)
4045 dent->got.refcount += ent->got.refcount;
4052 *entp = edir->elf.got.glist;
4055 edir->elf.got.glist = eind->elf.got.glist;
4056 eind->elf.got.glist = NULL;
4059 /* And plt entries. */
4060 move_plt_plist (eind, edir);
4062 if (eind->elf.dynindx != -1)
4064 if (edir->elf.dynindx != -1)
4065 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4066 edir->elf.dynstr_index);
4067 edir->elf.dynindx = eind->elf.dynindx;
4068 edir->elf.dynstr_index = eind->elf.dynstr_index;
4069 eind->elf.dynindx = -1;
4070 eind->elf.dynstr_index = 0;
4074 /* Find the function descriptor hash entry from the given function code
4075 hash entry FH. Link the entries via their OH fields. */
4077 static struct ppc_link_hash_entry *
4078 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4080 struct ppc_link_hash_entry *fdh = fh->oh;
4084 const char *fd_name = fh->elf.root.root.string + 1;
4086 fdh = (struct ppc_link_hash_entry *)
4087 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4090 fdh->is_func_descriptor = 1;
4100 /* Make a fake function descriptor sym for the code sym FH. */
4102 static struct ppc_link_hash_entry *
4103 make_fdh (struct bfd_link_info *info,
4104 struct ppc_link_hash_entry *fh)
4108 struct bfd_link_hash_entry *bh;
4109 struct ppc_link_hash_entry *fdh;
4111 abfd = fh->elf.root.u.undef.abfd;
4112 newsym = bfd_make_empty_symbol (abfd);
4113 newsym->name = fh->elf.root.root.string + 1;
4114 newsym->section = bfd_und_section_ptr;
4116 newsym->flags = BSF_WEAK;
4119 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4120 newsym->flags, newsym->section,
4121 newsym->value, NULL, FALSE, FALSE,
4125 fdh = (struct ppc_link_hash_entry *) bh;
4126 fdh->elf.non_elf = 0;
4128 fdh->is_func_descriptor = 1;
4135 /* Fix function descriptor symbols defined in .opd sections to be
4139 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4140 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4141 Elf_Internal_Sym *isym,
4142 const char **name ATTRIBUTE_UNUSED,
4143 flagword *flags ATTRIBUTE_UNUSED,
4145 bfd_vma *value ATTRIBUTE_UNUSED)
4148 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4149 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4154 /* This function makes an old ABI object reference to ".bar" cause the
4155 inclusion of a new ABI object archive that defines "bar".
4156 NAME is a symbol defined in an archive. Return a symbol in the hash
4157 table that might be satisfied by the archive symbols. */
4159 static struct elf_link_hash_entry *
4160 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4161 struct bfd_link_info *info,
4164 struct elf_link_hash_entry *h;
4168 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4170 /* Don't return this sym if it is a fake function descriptor
4171 created by add_symbol_adjust. */
4172 && !(h->root.type == bfd_link_hash_undefweak
4173 && ((struct ppc_link_hash_entry *) h)->fake))
4179 len = strlen (name);
4180 dot_name = bfd_alloc (abfd, len + 2);
4181 if (dot_name == NULL)
4182 return (struct elf_link_hash_entry *) 0 - 1;
4184 memcpy (dot_name + 1, name, len + 1);
4185 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4186 bfd_release (abfd, dot_name);
4190 /* This function satisfies all old ABI object references to ".bar" if a
4191 new ABI object defines "bar". Well, at least, undefined dot symbols
4192 are made weak. This stops later archive searches from including an
4193 object if we already have a function descriptor definition. It also
4194 prevents the linker complaining about undefined symbols.
4195 We also check and correct mismatched symbol visibility here. The
4196 most restrictive visibility of the function descriptor and the
4197 function entry symbol is used. */
4200 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4202 struct ppc_link_hash_table *htab;
4203 struct ppc_link_hash_entry *fdh;
4205 if (eh->elf.root.type == bfd_link_hash_indirect)
4208 if (eh->elf.root.type == bfd_link_hash_warning)
4209 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4211 if (eh->elf.root.root.string[0] != '.')
4214 htab = ppc_hash_table (info);
4215 fdh = get_fdh (eh, htab);
4217 && !info->relocatable
4218 && (eh->elf.root.type == bfd_link_hash_undefined
4219 || eh->elf.root.type == bfd_link_hash_undefweak)
4220 && eh->elf.ref_regular)
4222 /* Make an undefweak function descriptor sym, which is enough to
4223 pull in an --as-needed shared lib, but won't cause link
4224 errors. Archives are handled elsewhere. */
4225 fdh = make_fdh (info, eh);
4229 fdh->elf.ref_regular = 1;
4231 else if (fdh != NULL)
4233 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4234 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4235 if (entry_vis < descr_vis)
4236 fdh->elf.other += entry_vis - descr_vis;
4237 else if (entry_vis > descr_vis)
4238 eh->elf.other += descr_vis - entry_vis;
4240 if ((fdh->elf.root.type == bfd_link_hash_defined
4241 || fdh->elf.root.type == bfd_link_hash_defweak)
4242 && eh->elf.root.type == bfd_link_hash_undefined)
4244 eh->elf.root.type = bfd_link_hash_undefweak;
4245 eh->was_undefined = 1;
4246 htab->twiddled_syms = 1;
4253 /* Process list of dot-symbols we made in link_hash_newfunc. */
4256 ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
4258 struct ppc_link_hash_table *htab;
4259 struct ppc_link_hash_entry **p, *eh;
4261 htab = ppc_hash_table (info);
4262 if (!is_ppc64_elf_target (htab->elf.root.creator))
4265 if (is_ppc64_elf_target (ibfd->xvec))
4267 p = &htab->dot_syms;
4268 while ((eh = *p) != NULL)
4271 if (!add_symbol_adjust (eh, info))
4273 p = &eh->u.next_dot_sym;
4277 /* Clear the list for non-ppc64 input files. */
4278 p = &htab->dot_syms;
4279 while ((eh = *p) != NULL)
4282 p = &eh->u.next_dot_sym;
4285 /* We need to fix the undefs list for any syms we have twiddled to
4287 if (htab->twiddled_syms)
4289 bfd_link_repair_undef_list (&htab->elf.root);
4290 htab->twiddled_syms = 0;
4295 /* Undo hash table changes when an --as-needed input file is determined
4296 not to be needed. */
4299 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4300 struct bfd_link_info *info)
4302 ppc_hash_table (info)->dot_syms = NULL;
4307 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4308 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4310 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4311 char *local_got_tls_masks;
4313 if (local_got_ents == NULL)
4315 bfd_size_type size = symtab_hdr->sh_info;
4317 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4318 local_got_ents = bfd_zalloc (abfd, size);
4319 if (local_got_ents == NULL)
4321 elf_local_got_ents (abfd) = local_got_ents;
4324 if ((tls_type & TLS_EXPLICIT) == 0)
4326 struct got_entry *ent;
4328 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4329 if (ent->addend == r_addend
4330 && ent->owner == abfd
4331 && ent->tls_type == tls_type)
4335 bfd_size_type amt = sizeof (*ent);
4336 ent = bfd_alloc (abfd, amt);
4339 ent->next = local_got_ents[r_symndx];
4340 ent->addend = r_addend;
4342 ent->tls_type = tls_type;
4343 ent->got.refcount = 0;
4344 local_got_ents[r_symndx] = ent;
4346 ent->got.refcount += 1;
4349 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4350 local_got_tls_masks[r_symndx] |= tls_type;
4355 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4357 struct plt_entry *ent;
4359 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4360 if (ent->addend == addend)
4364 bfd_size_type amt = sizeof (*ent);
4365 ent = bfd_alloc (abfd, amt);
4368 ent->next = eh->elf.plt.plist;
4369 ent->addend = addend;
4370 ent->plt.refcount = 0;
4371 eh->elf.plt.plist = ent;
4373 ent->plt.refcount += 1;
4374 eh->elf.needs_plt = 1;
4375 if (eh->elf.root.root.string[0] == '.'
4376 && eh->elf.root.root.string[1] != '\0')
4381 /* Look through the relocs for a section during the first phase, and
4382 calculate needed space in the global offset table, procedure
4383 linkage table, and dynamic reloc sections. */
4386 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4387 asection *sec, const Elf_Internal_Rela *relocs)
4389 struct ppc_link_hash_table *htab;
4390 Elf_Internal_Shdr *symtab_hdr;
4391 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4392 const Elf_Internal_Rela *rel;
4393 const Elf_Internal_Rela *rel_end;
4395 asection **opd_sym_map;
4397 if (info->relocatable)
4400 /* Don't do anything special with non-loaded, non-alloced sections.
4401 In particular, any relocs in such sections should not affect GOT
4402 and PLT reference counting (ie. we don't allow them to create GOT
4403 or PLT entries), there's no possibility or desire to optimize TLS
4404 relocs, and there's not much point in propagating relocs to shared
4405 libs that the dynamic linker won't relocate. */
4406 if ((sec->flags & SEC_ALLOC) == 0)
4409 htab = ppc_hash_table (info);
4410 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4412 sym_hashes = elf_sym_hashes (abfd);
4413 sym_hashes_end = (sym_hashes
4414 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4415 - symtab_hdr->sh_info);
4419 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4421 /* Garbage collection needs some extra help with .opd sections.
4422 We don't want to necessarily keep everything referenced by
4423 relocs in .opd, as that would keep all functions. Instead,
4424 if we reference an .opd symbol (a function descriptor), we
4425 want to keep the function code symbol's section. This is
4426 easy for global symbols, but for local syms we need to keep
4427 information about the associated function section. Later, if
4428 edit_opd deletes entries, we'll use this array to adjust
4429 local syms in .opd. */
4431 asection *func_section;
4436 amt = sec->size * sizeof (union opd_info) / 8;
4437 opd_sym_map = bfd_zalloc (abfd, amt);
4438 if (opd_sym_map == NULL)
4440 ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
4441 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4442 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4445 if (htab->sfpr == NULL
4446 && !create_linkage_sections (htab->elf.dynobj, info))
4449 rel_end = relocs + sec->reloc_count;
4450 for (rel = relocs; rel < rel_end; rel++)
4452 unsigned long r_symndx;
4453 struct elf_link_hash_entry *h;
4454 enum elf_ppc64_reloc_type r_type;
4456 struct _ppc64_elf_section_data *ppc64_sec;
4458 r_symndx = ELF64_R_SYM (rel->r_info);
4459 if (r_symndx < symtab_hdr->sh_info)
4463 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4464 while (h->root.type == bfd_link_hash_indirect
4465 || h->root.type == bfd_link_hash_warning)
4466 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4469 r_type = ELF64_R_TYPE (rel->r_info);
4472 case R_PPC64_GOT_TLSLD16:
4473 case R_PPC64_GOT_TLSLD16_LO:
4474 case R_PPC64_GOT_TLSLD16_HI:
4475 case R_PPC64_GOT_TLSLD16_HA:
4476 ppc64_tlsld_got (abfd)->refcount += 1;
4477 tls_type = TLS_TLS | TLS_LD;
4480 case R_PPC64_GOT_TLSGD16:
4481 case R_PPC64_GOT_TLSGD16_LO:
4482 case R_PPC64_GOT_TLSGD16_HI:
4483 case R_PPC64_GOT_TLSGD16_HA:
4484 tls_type = TLS_TLS | TLS_GD;
4487 case R_PPC64_GOT_TPREL16_DS:
4488 case R_PPC64_GOT_TPREL16_LO_DS:
4489 case R_PPC64_GOT_TPREL16_HI:
4490 case R_PPC64_GOT_TPREL16_HA:
4492 info->flags |= DF_STATIC_TLS;
4493 tls_type = TLS_TLS | TLS_TPREL;
4496 case R_PPC64_GOT_DTPREL16_DS:
4497 case R_PPC64_GOT_DTPREL16_LO_DS:
4498 case R_PPC64_GOT_DTPREL16_HI:
4499 case R_PPC64_GOT_DTPREL16_HA:
4500 tls_type = TLS_TLS | TLS_DTPREL;
4502 sec->has_tls_reloc = 1;
4506 case R_PPC64_GOT16_DS:
4507 case R_PPC64_GOT16_HA:
4508 case R_PPC64_GOT16_HI:
4509 case R_PPC64_GOT16_LO:
4510 case R_PPC64_GOT16_LO_DS:
4511 /* This symbol requires a global offset table entry. */
4512 sec->has_toc_reloc = 1;
4513 if (ppc64_elf_tdata (abfd)->got == NULL
4514 && !create_got_section (abfd, info))
4519 struct ppc_link_hash_entry *eh;
4520 struct got_entry *ent;
4522 eh = (struct ppc_link_hash_entry *) h;
4523 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4524 if (ent->addend == rel->r_addend
4525 && ent->owner == abfd
4526 && ent->tls_type == tls_type)
4530 bfd_size_type amt = sizeof (*ent);
4531 ent = bfd_alloc (abfd, amt);
4534 ent->next = eh->elf.got.glist;
4535 ent->addend = rel->r_addend;
4537 ent->tls_type = tls_type;
4538 ent->got.refcount = 0;
4539 eh->elf.got.glist = ent;
4541 ent->got.refcount += 1;
4542 eh->tls_mask |= tls_type;
4545 /* This is a global offset table entry for a local symbol. */
4546 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4547 rel->r_addend, tls_type))
4551 case R_PPC64_PLT16_HA:
4552 case R_PPC64_PLT16_HI:
4553 case R_PPC64_PLT16_LO:
4556 /* This symbol requires a procedure linkage table entry. We
4557 actually build the entry in adjust_dynamic_symbol,
4558 because this might be a case of linking PIC code without
4559 linking in any dynamic objects, in which case we don't
4560 need to generate a procedure linkage table after all. */
4563 /* It does not make sense to have a procedure linkage
4564 table entry for a local symbol. */
4565 bfd_set_error (bfd_error_bad_value);
4569 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4574 /* The following relocations don't need to propagate the
4575 relocation if linking a shared object since they are
4576 section relative. */
4577 case R_PPC64_SECTOFF:
4578 case R_PPC64_SECTOFF_LO:
4579 case R_PPC64_SECTOFF_HI:
4580 case R_PPC64_SECTOFF_HA:
4581 case R_PPC64_SECTOFF_DS:
4582 case R_PPC64_SECTOFF_LO_DS:
4583 case R_PPC64_DTPREL16:
4584 case R_PPC64_DTPREL16_LO:
4585 case R_PPC64_DTPREL16_HI:
4586 case R_PPC64_DTPREL16_HA:
4587 case R_PPC64_DTPREL16_DS:
4588 case R_PPC64_DTPREL16_LO_DS:
4589 case R_PPC64_DTPREL16_HIGHER:
4590 case R_PPC64_DTPREL16_HIGHERA:
4591 case R_PPC64_DTPREL16_HIGHEST:
4592 case R_PPC64_DTPREL16_HIGHESTA:
4597 case R_PPC64_TOC16_LO:
4598 case R_PPC64_TOC16_HI:
4599 case R_PPC64_TOC16_HA:
4600 case R_PPC64_TOC16_DS:
4601 case R_PPC64_TOC16_LO_DS:
4602 sec->has_toc_reloc = 1;
4605 /* This relocation describes the C++ object vtable hierarchy.
4606 Reconstruct it for later use during GC. */
4607 case R_PPC64_GNU_VTINHERIT:
4608 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4612 /* This relocation describes which C++ vtable entries are actually
4613 used. Record for later use during GC. */
4614 case R_PPC64_GNU_VTENTRY:
4615 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4620 case R_PPC64_REL14_BRTAKEN:
4621 case R_PPC64_REL14_BRNTAKEN:
4623 asection *dest = NULL;
4625 /* Heuristic: If jumping outside our section, chances are
4626 we are going to need a stub. */
4629 /* If the sym is weak it may be overridden later, so
4630 don't assume we know where a weak sym lives. */
4631 if (h->root.type == bfd_link_hash_defined)
4632 dest = h->root.u.def.section;
4635 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4638 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
4645 /* We may need a .plt entry if the function this reloc
4646 refers to is in a shared lib. */
4647 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4650 if (h == &htab->tls_get_addr->elf
4651 || h == &htab->tls_get_addr_fd->elf)
4652 sec->has_tls_reloc = 1;
4653 else if (htab->tls_get_addr == NULL
4654 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
4655 && (h->root.root.string[15] == 0
4656 || h->root.root.string[15] == '@'))
4658 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4659 sec->has_tls_reloc = 1;
4661 else if (htab->tls_get_addr_fd == NULL
4662 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
4663 && (h->root.root.string[14] == 0
4664 || h->root.root.string[14] == '@'))
4666 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4667 sec->has_tls_reloc = 1;
4672 case R_PPC64_TPREL64:
4673 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4675 info->flags |= DF_STATIC_TLS;
4678 case R_PPC64_DTPMOD64:
4679 if (rel + 1 < rel_end
4680 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4681 && rel[1].r_offset == rel->r_offset + 8)
4682 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4684 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4687 case R_PPC64_DTPREL64:
4688 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4690 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4691 && rel[-1].r_offset == rel->r_offset - 8)
4692 /* This is the second reloc of a dtpmod, dtprel pair.
4693 Don't mark with TLS_DTPREL. */
4697 sec->has_tls_reloc = 1;
4700 struct ppc_link_hash_entry *eh;
4701 eh = (struct ppc_link_hash_entry *) h;
4702 eh->tls_mask |= tls_type;
4705 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4706 rel->r_addend, tls_type))
4709 ppc64_sec = ppc64_elf_section_data (sec);
4710 if (ppc64_sec->sec_type != sec_toc)
4712 /* One extra to simplify get_tls_mask. */
4713 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4714 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4715 if (ppc64_sec->u.t_symndx == NULL)
4717 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4718 ppc64_sec->sec_type = sec_toc;
4720 BFD_ASSERT (rel->r_offset % 8 == 0);
4721 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
4723 /* Mark the second slot of a GD or LD entry.
4724 -1 to indicate GD and -2 to indicate LD. */
4725 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4726 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
4727 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4728 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
4731 case R_PPC64_TPREL16:
4732 case R_PPC64_TPREL16_LO:
4733 case R_PPC64_TPREL16_HI:
4734 case R_PPC64_TPREL16_HA:
4735 case R_PPC64_TPREL16_DS:
4736 case R_PPC64_TPREL16_LO_DS:
4737 case R_PPC64_TPREL16_HIGHER:
4738 case R_PPC64_TPREL16_HIGHERA:
4739 case R_PPC64_TPREL16_HIGHEST:
4740 case R_PPC64_TPREL16_HIGHESTA:
4743 info->flags |= DF_STATIC_TLS;
4748 case R_PPC64_ADDR64:
4749 if (opd_sym_map != NULL
4750 && rel + 1 < rel_end
4751 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4755 if (h->root.root.string[0] == '.'
4756 && h->root.root.string[1] != 0
4757 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4760 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4766 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4771 opd_sym_map[rel->r_offset / 8] = s;
4779 case R_PPC64_ADDR14:
4780 case R_PPC64_ADDR14_BRNTAKEN:
4781 case R_PPC64_ADDR14_BRTAKEN:
4782 case R_PPC64_ADDR16:
4783 case R_PPC64_ADDR16_DS:
4784 case R_PPC64_ADDR16_HA:
4785 case R_PPC64_ADDR16_HI:
4786 case R_PPC64_ADDR16_HIGHER:
4787 case R_PPC64_ADDR16_HIGHERA:
4788 case R_PPC64_ADDR16_HIGHEST:
4789 case R_PPC64_ADDR16_HIGHESTA:
4790 case R_PPC64_ADDR16_LO:
4791 case R_PPC64_ADDR16_LO_DS:
4792 case R_PPC64_ADDR24:
4793 case R_PPC64_ADDR32:
4794 case R_PPC64_UADDR16:
4795 case R_PPC64_UADDR32:
4796 case R_PPC64_UADDR64:
4798 if (h != NULL && !info->shared)
4799 /* We may need a copy reloc. */
4802 /* Don't propagate .opd relocs. */
4803 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4806 /* If we are creating a shared library, and this is a reloc
4807 against a global symbol, or a non PC relative reloc
4808 against a local symbol, then we need to copy the reloc
4809 into the shared library. However, if we are linking with
4810 -Bsymbolic, we do not need to copy a reloc against a
4811 global symbol which is defined in an object we are
4812 including in the link (i.e., DEF_REGULAR is set). At
4813 this point we have not seen all the input files, so it is
4814 possible that DEF_REGULAR is not set now but will be set
4815 later (it is never cleared). In case of a weak definition,
4816 DEF_REGULAR may be cleared later by a strong definition in
4817 a shared library. We account for that possibility below by
4818 storing information in the dyn_relocs field of the hash
4819 table entry. A similar situation occurs when creating
4820 shared libraries and symbol visibility changes render the
4823 If on the other hand, we are creating an executable, we
4824 may need to keep relocations for symbols satisfied by a
4825 dynamic library if we manage to avoid copy relocs for the
4829 && (MUST_BE_DYN_RELOC (r_type)
4831 && (! info->symbolic
4832 || h->root.type == bfd_link_hash_defweak
4833 || !h->def_regular))))
4834 || (ELIMINATE_COPY_RELOCS
4837 && (h->root.type == bfd_link_hash_defweak
4838 || !h->def_regular)))
4840 struct ppc_dyn_relocs *p;
4841 struct ppc_dyn_relocs **head;
4843 /* We must copy these reloc types into the output file.
4844 Create a reloc section in dynobj and make room for
4851 name = (bfd_elf_string_from_elf_section
4853 elf_elfheader (abfd)->e_shstrndx,
4854 elf_section_data (sec)->rel_hdr.sh_name));
4858 if (! CONST_STRNEQ (name, ".rela")
4859 || strcmp (bfd_get_section_name (abfd, sec),
4862 (*_bfd_error_handler)
4863 (_("%B: bad relocation section name `%s\'"),
4865 bfd_set_error (bfd_error_bad_value);
4868 dynobj = htab->elf.dynobj;
4869 sreloc = bfd_get_section_by_name (dynobj, name);
4874 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4875 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4876 | SEC_ALLOC | SEC_LOAD);
4877 sreloc = bfd_make_section_with_flags (dynobj,
4881 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4884 elf_section_data (sec)->sreloc = sreloc;
4887 /* If this is a global symbol, we count the number of
4888 relocations we need for this symbol. */
4891 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4895 /* Track dynamic relocs needed for local syms too.
4896 We really need local syms available to do this
4902 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4907 vpp = &elf_section_data (s)->local_dynrel;
4908 head = (struct ppc_dyn_relocs **) vpp;
4912 if (p == NULL || p->sec != sec)
4914 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4925 if (!MUST_BE_DYN_RELOC (r_type))
4938 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4939 of the code entry point, and its section. */
4942 opd_entry_value (asection *opd_sec,
4944 asection **code_sec,
4947 bfd *opd_bfd = opd_sec->owner;
4948 Elf_Internal_Rela *relocs;
4949 Elf_Internal_Rela *lo, *hi, *look;
4952 /* No relocs implies we are linking a --just-symbols object. */
4953 if (opd_sec->reloc_count == 0)
4957 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4958 return (bfd_vma) -1;
4960 if (code_sec != NULL)
4962 asection *sec, *likely = NULL;
4963 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4965 && (sec->flags & SEC_LOAD) != 0
4966 && (sec->flags & SEC_ALLOC) != 0)
4971 if (code_off != NULL)
4972 *code_off = val - likely->vma;
4978 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4980 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4982 /* Go find the opd reloc at the sym address. */
4984 BFD_ASSERT (lo != NULL);
4985 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4989 look = lo + (hi - lo) / 2;
4990 if (look->r_offset < offset)
4992 else if (look->r_offset > offset)
4996 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4997 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4998 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5000 unsigned long symndx = ELF64_R_SYM (look->r_info);
5003 if (symndx < symtab_hdr->sh_info)
5005 Elf_Internal_Sym *sym;
5007 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5010 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5011 symtab_hdr->sh_info,
5012 0, NULL, NULL, NULL);
5015 symtab_hdr->contents = (bfd_byte *) sym;
5019 val = sym->st_value;
5021 if ((sym->st_shndx != SHN_UNDEF
5022 && sym->st_shndx < SHN_LORESERVE)
5023 || sym->st_shndx > SHN_HIRESERVE)
5024 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5025 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5029 struct elf_link_hash_entry **sym_hashes;
5030 struct elf_link_hash_entry *rh;
5032 sym_hashes = elf_sym_hashes (opd_bfd);
5033 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5034 while (rh->root.type == bfd_link_hash_indirect
5035 || rh->root.type == bfd_link_hash_warning)
5036 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5037 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5038 || rh->root.type == bfd_link_hash_defweak);
5039 val = rh->root.u.def.value;
5040 sec = rh->root.u.def.section;
5042 val += look->r_addend;
5043 if (code_off != NULL)
5045 if (code_sec != NULL)
5047 if (sec != NULL && sec->output_section != NULL)
5048 val += sec->output_section->vma + sec->output_offset;
5057 /* Mark sections containing dynamically referenced symbols. When
5058 building shared libraries, we must assume that any visible symbol is
5062 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5064 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5065 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5067 if (eh->elf.root.type == bfd_link_hash_warning)
5068 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5070 /* Dynamic linking info is on the func descriptor sym. */
5072 && eh->oh->is_func_descriptor
5073 && (eh->oh->elf.root.type == bfd_link_hash_defined
5074 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5077 if ((eh->elf.root.type == bfd_link_hash_defined
5078 || eh->elf.root.type == bfd_link_hash_defweak)
5079 && (eh->elf.ref_dynamic
5080 || (!info->executable
5081 && eh->elf.def_regular
5082 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5083 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5087 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5089 /* Function descriptor syms cause the associated
5090 function code sym section to be marked. */
5091 if (eh->is_func_descriptor
5092 && (eh->oh->elf.root.type == bfd_link_hash_defined
5093 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5094 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5095 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5096 && opd_entry_value (eh->elf.root.u.def.section,
5097 eh->elf.root.u.def.value,
5098 &code_sec, NULL) != (bfd_vma) -1)
5099 code_sec->flags |= SEC_KEEP;
5105 /* Return the section that should be marked against GC for a given
5109 ppc64_elf_gc_mark_hook (asection *sec,
5110 struct bfd_link_info *info,
5111 Elf_Internal_Rela *rel,
5112 struct elf_link_hash_entry *h,
5113 Elf_Internal_Sym *sym)
5117 /* First mark all our entry sym sections. */
5118 if (info->gc_sym_list != NULL)
5120 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5121 struct bfd_sym_chain *sym = info->gc_sym_list;
5123 info->gc_sym_list = NULL;
5124 for (; sym != NULL; sym = sym->next)
5126 struct ppc_link_hash_entry *eh;
5128 eh = (struct ppc_link_hash_entry *)
5129 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5132 if (eh->elf.root.type != bfd_link_hash_defined
5133 && eh->elf.root.type != bfd_link_hash_defweak)
5136 if (eh->is_func_descriptor
5137 && (eh->oh->elf.root.type == bfd_link_hash_defined
5138 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5139 rsec = eh->oh->elf.root.u.def.section;
5140 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5141 && opd_entry_value (eh->elf.root.u.def.section,
5142 eh->elf.root.u.def.value,
5143 &rsec, NULL) != (bfd_vma) -1)
5149 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5151 rsec = eh->elf.root.u.def.section;
5153 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5157 /* Syms return NULL if we're marking .opd, so we avoid marking all
5158 function sections, as all functions are referenced in .opd. */
5160 if (get_opd_info (sec) != NULL)
5165 enum elf_ppc64_reloc_type r_type;
5166 struct ppc_link_hash_entry *eh;
5168 r_type = ELF64_R_TYPE (rel->r_info);
5171 case R_PPC64_GNU_VTINHERIT:
5172 case R_PPC64_GNU_VTENTRY:
5176 switch (h->root.type)
5178 case bfd_link_hash_defined:
5179 case bfd_link_hash_defweak:
5180 eh = (struct ppc_link_hash_entry *) h;
5182 && eh->oh->is_func_descriptor
5183 && (eh->oh->elf.root.type == bfd_link_hash_defined
5184 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5187 /* Function descriptor syms cause the associated
5188 function code sym section to be marked. */
5189 if (eh->is_func_descriptor
5190 && (eh->oh->elf.root.type == bfd_link_hash_defined
5191 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5193 /* They also mark their opd section. */
5194 if (!eh->elf.root.u.def.section->gc_mark)
5195 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5196 ppc64_elf_gc_mark_hook);
5198 rsec = eh->oh->elf.root.u.def.section;
5200 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5201 && opd_entry_value (eh->elf.root.u.def.section,
5202 eh->elf.root.u.def.value,
5203 &rsec, NULL) != (bfd_vma) -1)
5205 if (!eh->elf.root.u.def.section->gc_mark)
5206 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5207 ppc64_elf_gc_mark_hook);
5210 rsec = h->root.u.def.section;
5213 case bfd_link_hash_common:
5214 rsec = h->root.u.c.p->section;
5224 asection **opd_sym_section;
5226 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5227 opd_sym_section = get_opd_info (rsec);
5228 if (opd_sym_section != NULL)
5231 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5233 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
5240 /* Update the .got, .plt. and dynamic reloc reference counts for the
5241 section being removed. */
5244 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5245 asection *sec, const Elf_Internal_Rela *relocs)
5247 struct ppc_link_hash_table *htab;
5248 Elf_Internal_Shdr *symtab_hdr;
5249 struct elf_link_hash_entry **sym_hashes;
5250 struct got_entry **local_got_ents;
5251 const Elf_Internal_Rela *rel, *relend;
5253 if ((sec->flags & SEC_ALLOC) == 0)
5256 elf_section_data (sec)->local_dynrel = NULL;
5258 htab = ppc_hash_table (info);
5259 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5260 sym_hashes = elf_sym_hashes (abfd);
5261 local_got_ents = elf_local_got_ents (abfd);
5263 relend = relocs + sec->reloc_count;
5264 for (rel = relocs; rel < relend; rel++)
5266 unsigned long r_symndx;
5267 enum elf_ppc64_reloc_type r_type;
5268 struct elf_link_hash_entry *h = NULL;
5271 r_symndx = ELF64_R_SYM (rel->r_info);
5272 r_type = ELF64_R_TYPE (rel->r_info);
5273 if (r_symndx >= symtab_hdr->sh_info)
5275 struct ppc_link_hash_entry *eh;
5276 struct ppc_dyn_relocs **pp;
5277 struct ppc_dyn_relocs *p;
5279 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5280 while (h->root.type == bfd_link_hash_indirect
5281 || h->root.type == bfd_link_hash_warning)
5282 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5283 eh = (struct ppc_link_hash_entry *) h;
5285 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5288 /* Everything must go for SEC. */
5296 case R_PPC64_GOT_TLSLD16:
5297 case R_PPC64_GOT_TLSLD16_LO:
5298 case R_PPC64_GOT_TLSLD16_HI:
5299 case R_PPC64_GOT_TLSLD16_HA:
5300 ppc64_tlsld_got (abfd)->refcount -= 1;
5301 tls_type = TLS_TLS | TLS_LD;
5304 case R_PPC64_GOT_TLSGD16:
5305 case R_PPC64_GOT_TLSGD16_LO:
5306 case R_PPC64_GOT_TLSGD16_HI:
5307 case R_PPC64_GOT_TLSGD16_HA:
5308 tls_type = TLS_TLS | TLS_GD;
5311 case R_PPC64_GOT_TPREL16_DS:
5312 case R_PPC64_GOT_TPREL16_LO_DS:
5313 case R_PPC64_GOT_TPREL16_HI:
5314 case R_PPC64_GOT_TPREL16_HA:
5315 tls_type = TLS_TLS | TLS_TPREL;
5318 case R_PPC64_GOT_DTPREL16_DS:
5319 case R_PPC64_GOT_DTPREL16_LO_DS:
5320 case R_PPC64_GOT_DTPREL16_HI:
5321 case R_PPC64_GOT_DTPREL16_HA:
5322 tls_type = TLS_TLS | TLS_DTPREL;
5326 case R_PPC64_GOT16_DS:
5327 case R_PPC64_GOT16_HA:
5328 case R_PPC64_GOT16_HI:
5329 case R_PPC64_GOT16_LO:
5330 case R_PPC64_GOT16_LO_DS:
5333 struct got_entry *ent;
5338 ent = local_got_ents[r_symndx];
5340 for (; ent != NULL; ent = ent->next)
5341 if (ent->addend == rel->r_addend
5342 && ent->owner == abfd
5343 && ent->tls_type == tls_type)
5347 if (ent->got.refcount > 0)
5348 ent->got.refcount -= 1;
5352 case R_PPC64_PLT16_HA:
5353 case R_PPC64_PLT16_HI:
5354 case R_PPC64_PLT16_LO:
5358 case R_PPC64_REL14_BRNTAKEN:
5359 case R_PPC64_REL14_BRTAKEN:
5363 struct plt_entry *ent;
5365 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5366 if (ent->addend == rel->r_addend)
5368 if (ent != NULL && ent->plt.refcount > 0)
5369 ent->plt.refcount -= 1;
5380 /* The maximum size of .sfpr. */
5381 #define SFPR_MAX (218*4)
5383 struct sfpr_def_parms
5385 const char name[12];
5386 unsigned char lo, hi;
5387 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5388 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5391 /* Auto-generate _save*, _rest* functions in .sfpr. */
5394 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5396 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5398 size_t len = strlen (parm->name);
5399 bfd_boolean writing = FALSE;
5402 memcpy (sym, parm->name, len);
5405 for (i = parm->lo; i <= parm->hi; i++)
5407 struct elf_link_hash_entry *h;
5409 sym[len + 0] = i / 10 + '0';
5410 sym[len + 1] = i % 10 + '0';
5411 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5415 h->root.type = bfd_link_hash_defined;
5416 h->root.u.def.section = htab->sfpr;
5417 h->root.u.def.value = htab->sfpr->size;
5420 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5422 if (htab->sfpr->contents == NULL)
5424 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5425 if (htab->sfpr->contents == NULL)
5431 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5433 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5435 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5436 htab->sfpr->size = p - htab->sfpr->contents;
5444 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5446 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5451 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5453 p = savegpr0 (abfd, p, r);
5454 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5456 bfd_put_32 (abfd, BLR, p);
5461 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5463 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5468 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5470 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5472 p = restgpr0 (abfd, p, r);
5473 bfd_put_32 (abfd, MTLR_R0, p);
5477 p = restgpr0 (abfd, p, 30);
5478 p = restgpr0 (abfd, p, 31);
5480 bfd_put_32 (abfd, BLR, p);
5485 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5487 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5492 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5494 p = savegpr1 (abfd, p, r);
5495 bfd_put_32 (abfd, BLR, p);
5500 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5502 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5507 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5509 p = restgpr1 (abfd, p, r);
5510 bfd_put_32 (abfd, BLR, p);
5515 savefpr (bfd *abfd, bfd_byte *p, int r)
5517 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5522 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5524 p = savefpr (abfd, p, r);
5525 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5527 bfd_put_32 (abfd, BLR, p);
5532 restfpr (bfd *abfd, bfd_byte *p, int r)
5534 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5539 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5541 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5543 p = restfpr (abfd, p, r);
5544 bfd_put_32 (abfd, MTLR_R0, p);
5548 p = restfpr (abfd, p, 30);
5549 p = restfpr (abfd, p, 31);
5551 bfd_put_32 (abfd, BLR, p);
5556 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5558 p = savefpr (abfd, p, r);
5559 bfd_put_32 (abfd, BLR, p);
5564 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5566 p = restfpr (abfd, p, r);
5567 bfd_put_32 (abfd, BLR, p);
5572 savevr (bfd *abfd, bfd_byte *p, int r)
5574 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5576 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5581 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5583 p = savevr (abfd, p, r);
5584 bfd_put_32 (abfd, BLR, p);
5589 restvr (bfd *abfd, bfd_byte *p, int r)
5591 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5593 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5598 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5600 p = restvr (abfd, p, r);
5601 bfd_put_32 (abfd, BLR, p);
5605 /* Called via elf_link_hash_traverse to transfer dynamic linking
5606 information on function code symbol entries to their corresponding
5607 function descriptor symbol entries. */
5610 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5612 struct bfd_link_info *info;
5613 struct ppc_link_hash_table *htab;
5614 struct plt_entry *ent;
5615 struct ppc_link_hash_entry *fh;
5616 struct ppc_link_hash_entry *fdh;
5617 bfd_boolean force_local;
5619 fh = (struct ppc_link_hash_entry *) h;
5620 if (fh->elf.root.type == bfd_link_hash_indirect)
5623 if (fh->elf.root.type == bfd_link_hash_warning)
5624 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5627 htab = ppc_hash_table (info);
5629 /* Resolve undefined references to dot-symbols as the value
5630 in the function descriptor, if we have one in a regular object.
5631 This is to satisfy cases like ".quad .foo". Calls to functions
5632 in dynamic objects are handled elsewhere. */
5633 if (fh->elf.root.type == bfd_link_hash_undefweak
5634 && fh->was_undefined
5635 && (fh->oh->elf.root.type == bfd_link_hash_defined
5636 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5637 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5638 && opd_entry_value (fh->oh->elf.root.u.def.section,
5639 fh->oh->elf.root.u.def.value,
5640 &fh->elf.root.u.def.section,
5641 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5643 fh->elf.root.type = fh->oh->elf.root.type;
5644 fh->elf.forced_local = 1;
5647 /* If this is a function code symbol, transfer dynamic linking
5648 information to the function descriptor symbol. */
5652 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5653 if (ent->plt.refcount > 0)
5656 || fh->elf.root.root.string[0] != '.'
5657 || fh->elf.root.root.string[1] == '\0')
5660 /* Find the corresponding function descriptor symbol. Create it
5661 as undefined if necessary. */
5663 fdh = get_fdh (fh, htab);
5665 while (fdh->elf.root.type == bfd_link_hash_indirect
5666 || fdh->elf.root.type == bfd_link_hash_warning)
5667 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5671 && (fh->elf.root.type == bfd_link_hash_undefined
5672 || fh->elf.root.type == bfd_link_hash_undefweak))
5674 fdh = make_fdh (info, fh);
5679 /* Fake function descriptors are made undefweak. If the function
5680 code symbol is strong undefined, make the fake sym the same.
5681 If the function code symbol is defined, then force the fake
5682 descriptor local; We can't support overriding of symbols in a
5683 shared library on a fake descriptor. */
5687 && fdh->elf.root.type == bfd_link_hash_undefweak)
5689 if (fh->elf.root.type == bfd_link_hash_undefined)
5691 fdh->elf.root.type = bfd_link_hash_undefined;
5692 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5694 else if (fh->elf.root.type == bfd_link_hash_defined
5695 || fh->elf.root.type == bfd_link_hash_defweak)
5697 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5702 && !fdh->elf.forced_local
5704 || fdh->elf.def_dynamic
5705 || fdh->elf.ref_dynamic
5706 || (fdh->elf.root.type == bfd_link_hash_undefweak
5707 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5709 if (fdh->elf.dynindx == -1)
5710 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5712 fdh->elf.ref_regular |= fh->elf.ref_regular;
5713 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5714 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5715 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5716 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5718 move_plt_plist (fh, fdh);
5719 fdh->elf.needs_plt = 1;
5721 fdh->is_func_descriptor = 1;
5726 /* Now that the info is on the function descriptor, clear the
5727 function code sym info. Any function code syms for which we
5728 don't have a definition in a regular file, we force local.
5729 This prevents a shared library from exporting syms that have
5730 been imported from another library. Function code syms that
5731 are really in the library we must leave global to prevent the
5732 linker dragging in a definition from a static library. */
5733 force_local = (!fh->elf.def_regular
5735 || !fdh->elf.def_regular
5736 || fdh->elf.forced_local);
5737 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5742 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5743 this hook to a) provide some gcc support functions, and b) transfer
5744 dynamic linking information gathered so far on function code symbol
5745 entries, to their corresponding function descriptor symbol entries. */
5748 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5749 struct bfd_link_info *info)
5751 struct ppc_link_hash_table *htab;
5753 const struct sfpr_def_parms funcs[] =
5755 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5756 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5757 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5758 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5759 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5760 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5761 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5762 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5763 { "._savef", 14, 31, savefpr, savefpr1_tail },
5764 { "._restf", 14, 31, restfpr, restfpr1_tail },
5765 { "_savevr_", 20, 31, savevr, savevr_tail },
5766 { "_restvr_", 20, 31, restvr, restvr_tail }
5769 htab = ppc_hash_table (info);
5770 if (htab->sfpr == NULL)
5771 /* We don't have any relocs. */
5774 /* Provide any missing _save* and _rest* functions. */
5775 htab->sfpr->size = 0;
5776 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5777 if (!sfpr_define (info, &funcs[i]))
5780 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5782 if (htab->sfpr->size == 0)
5783 htab->sfpr->flags |= SEC_EXCLUDE;
5788 /* Adjust a symbol defined by a dynamic object and referenced by a
5789 regular object. The current definition is in some section of the
5790 dynamic object, but we're not including those sections. We have to
5791 change the definition to something the rest of the link can
5795 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5796 struct elf_link_hash_entry *h)
5798 struct ppc_link_hash_table *htab;
5801 htab = ppc_hash_table (info);
5803 /* Deal with function syms. */
5804 if (h->type == STT_FUNC
5807 /* Clear procedure linkage table information for any symbol that
5808 won't need a .plt entry. */
5809 struct plt_entry *ent;
5810 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5811 if (ent->plt.refcount > 0)
5814 || SYMBOL_CALLS_LOCAL (info, h)
5815 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5816 && h->root.type == bfd_link_hash_undefweak))
5818 h->plt.plist = NULL;
5823 h->plt.plist = NULL;
5825 /* If this is a weak symbol, and there is a real definition, the
5826 processor independent code will have arranged for us to see the
5827 real definition first, and we can just use the same value. */
5828 if (h->u.weakdef != NULL)
5830 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5831 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5832 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5833 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5834 if (ELIMINATE_COPY_RELOCS)
5835 h->non_got_ref = h->u.weakdef->non_got_ref;
5839 /* If we are creating a shared library, we must presume that the
5840 only references to the symbol are via the global offset table.
5841 For such cases we need not do anything here; the relocations will
5842 be handled correctly by relocate_section. */
5846 /* If there are no references to this symbol that do not use the
5847 GOT, we don't need to generate a copy reloc. */
5848 if (!h->non_got_ref)
5851 /* Don't generate a copy reloc for symbols defined in the executable. */
5852 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
5855 if (ELIMINATE_COPY_RELOCS)
5857 struct ppc_link_hash_entry * eh;
5858 struct ppc_dyn_relocs *p;
5860 eh = (struct ppc_link_hash_entry *) h;
5861 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5863 s = p->sec->output_section;
5864 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5868 /* If we didn't find any dynamic relocs in read-only sections, then
5869 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5877 if (h->plt.plist != NULL)
5879 /* We should never get here, but unfortunately there are versions
5880 of gcc out there that improperly (for this ABI) put initialized
5881 function pointers, vtable refs and suchlike in read-only
5882 sections. Allow them to proceed, but warn that this might
5883 break at runtime. */
5884 (*_bfd_error_handler)
5885 (_("copy reloc against `%s' requires lazy plt linking; "
5886 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5887 h->root.root.string);
5890 /* This is a reference to a symbol defined by a dynamic object which
5891 is not a function. */
5895 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5896 h->root.root.string);
5900 /* We must allocate the symbol in our .dynbss section, which will
5901 become part of the .bss section of the executable. There will be
5902 an entry for this symbol in the .dynsym section. The dynamic
5903 object will contain position independent code, so all references
5904 from the dynamic object to this symbol will go through the global
5905 offset table. The dynamic linker will use the .dynsym entry to
5906 determine the address it must put in the global offset table, so
5907 both the dynamic object and the regular object will refer to the
5908 same memory location for the variable. */
5910 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5911 to copy the initial value out of the dynamic object and into the
5912 runtime process image. We need to remember the offset into the
5913 .rela.bss section we are going to use. */
5914 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5916 htab->relbss->size += sizeof (Elf64_External_Rela);
5922 return _bfd_elf_adjust_dynamic_copy (h, s);
5925 /* If given a function descriptor symbol, hide both the function code
5926 sym and the descriptor. */
5928 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5929 struct elf_link_hash_entry *h,
5930 bfd_boolean force_local)
5932 struct ppc_link_hash_entry *eh;
5933 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5935 eh = (struct ppc_link_hash_entry *) h;
5936 if (eh->is_func_descriptor)
5938 struct ppc_link_hash_entry *fh = eh->oh;
5943 struct ppc_link_hash_table *htab;
5946 /* We aren't supposed to use alloca in BFD because on
5947 systems which do not have alloca the version in libiberty
5948 calls xmalloc, which might cause the program to crash
5949 when it runs out of memory. This function doesn't have a
5950 return status, so there's no way to gracefully return an
5951 error. So cheat. We know that string[-1] can be safely
5952 accessed; It's either a string in an ELF string table,
5953 or allocated in an objalloc structure. */
5955 p = eh->elf.root.root.string - 1;
5958 htab = ppc_hash_table (info);
5959 fh = (struct ppc_link_hash_entry *)
5960 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5963 /* Unfortunately, if it so happens that the string we were
5964 looking for was allocated immediately before this string,
5965 then we overwrote the string terminator. That's the only
5966 reason the lookup should fail. */
5969 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5970 while (q >= eh->elf.root.root.string && *q == *p)
5972 if (q < eh->elf.root.root.string && *p == '.')
5973 fh = (struct ppc_link_hash_entry *)
5974 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5983 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5988 get_sym_h (struct elf_link_hash_entry **hp,
5989 Elf_Internal_Sym **symp,
5992 Elf_Internal_Sym **locsymsp,
5993 unsigned long r_symndx,
5996 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5998 if (r_symndx >= symtab_hdr->sh_info)
6000 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6001 struct elf_link_hash_entry *h;
6003 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6004 while (h->root.type == bfd_link_hash_indirect
6005 || h->root.type == bfd_link_hash_warning)
6006 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6014 if (symsecp != NULL)
6016 asection *symsec = NULL;
6017 if (h->root.type == bfd_link_hash_defined
6018 || h->root.type == bfd_link_hash_defweak)
6019 symsec = h->root.u.def.section;
6023 if (tls_maskp != NULL)
6025 struct ppc_link_hash_entry *eh;
6027 eh = (struct ppc_link_hash_entry *) h;
6028 *tls_maskp = &eh->tls_mask;
6033 Elf_Internal_Sym *sym;
6034 Elf_Internal_Sym *locsyms = *locsymsp;
6036 if (locsyms == NULL)
6038 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6039 if (locsyms == NULL)
6040 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6041 symtab_hdr->sh_info,
6042 0, NULL, NULL, NULL);
6043 if (locsyms == NULL)
6045 *locsymsp = locsyms;
6047 sym = locsyms + r_symndx;
6055 if (symsecp != NULL)
6057 asection *symsec = NULL;
6058 if ((sym->st_shndx != SHN_UNDEF
6059 && sym->st_shndx < SHN_LORESERVE)
6060 || sym->st_shndx > SHN_HIRESERVE)
6061 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6065 if (tls_maskp != NULL)
6067 struct got_entry **lgot_ents;
6071 lgot_ents = elf_local_got_ents (ibfd);
6072 if (lgot_ents != NULL)
6074 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6075 tls_mask = &lgot_masks[r_symndx];
6077 *tls_maskp = tls_mask;
6083 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6084 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6085 type suitable for optimization, and 1 otherwise. */
6088 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6089 Elf_Internal_Sym **locsymsp,
6090 const Elf_Internal_Rela *rel, bfd *ibfd)
6092 unsigned long r_symndx;
6094 struct elf_link_hash_entry *h;
6095 Elf_Internal_Sym *sym;
6099 r_symndx = ELF64_R_SYM (rel->r_info);
6100 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6103 if ((*tls_maskp != NULL && **tls_maskp != 0)
6105 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6108 /* Look inside a TOC section too. */
6111 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6112 off = h->root.u.def.value;
6115 off = sym->st_value;
6116 off += rel->r_addend;
6117 BFD_ASSERT (off % 8 == 0);
6118 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6119 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
6120 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6122 if (toc_symndx != NULL)
6123 *toc_symndx = r_symndx;
6125 || ((h->root.type == bfd_link_hash_defined
6126 || h->root.type == bfd_link_hash_defweak)
6127 && !h->def_dynamic))
6128 && (next_r == -1 || next_r == -2))
6133 /* Adjust all global syms defined in opd sections. In gcc generated
6134 code for the old ABI, these will already have been done. */
6137 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6139 struct ppc_link_hash_entry *eh;
6143 if (h->root.type == bfd_link_hash_indirect)
6146 if (h->root.type == bfd_link_hash_warning)
6147 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6149 if (h->root.type != bfd_link_hash_defined
6150 && h->root.type != bfd_link_hash_defweak)
6153 eh = (struct ppc_link_hash_entry *) h;
6154 if (eh->adjust_done)
6157 sym_sec = eh->elf.root.u.def.section;
6158 opd_adjust = get_opd_info (sym_sec);
6159 if (opd_adjust != NULL)
6161 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
6164 /* This entry has been deleted. */
6165 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6168 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6169 if (elf_discarded_section (dsec))
6171 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6175 eh->elf.root.u.def.value = 0;
6176 eh->elf.root.u.def.section = dsec;
6179 eh->elf.root.u.def.value += adjust;
6180 eh->adjust_done = 1;
6185 /* Handles decrementing dynamic reloc counts for the reloc specified by
6186 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6187 have already been determined. */
6190 dec_dynrel_count (bfd_vma r_info,
6192 struct bfd_link_info *info,
6193 Elf_Internal_Sym **local_syms,
6194 struct elf_link_hash_entry *h,
6197 enum elf_ppc64_reloc_type r_type;
6198 struct ppc_dyn_relocs *p;
6199 struct ppc_dyn_relocs **pp;
6201 /* Can this reloc be dynamic? This switch, and later tests here
6202 should be kept in sync with the code in check_relocs. */
6203 r_type = ELF64_R_TYPE (r_info);
6209 case R_PPC64_TPREL16:
6210 case R_PPC64_TPREL16_LO:
6211 case R_PPC64_TPREL16_HI:
6212 case R_PPC64_TPREL16_HA:
6213 case R_PPC64_TPREL16_DS:
6214 case R_PPC64_TPREL16_LO_DS:
6215 case R_PPC64_TPREL16_HIGHER:
6216 case R_PPC64_TPREL16_HIGHERA:
6217 case R_PPC64_TPREL16_HIGHEST:
6218 case R_PPC64_TPREL16_HIGHESTA:
6222 case R_PPC64_TPREL64:
6223 case R_PPC64_DTPMOD64:
6224 case R_PPC64_DTPREL64:
6225 case R_PPC64_ADDR64:
6229 case R_PPC64_ADDR14:
6230 case R_PPC64_ADDR14_BRNTAKEN:
6231 case R_PPC64_ADDR14_BRTAKEN:
6232 case R_PPC64_ADDR16:
6233 case R_PPC64_ADDR16_DS:
6234 case R_PPC64_ADDR16_HA:
6235 case R_PPC64_ADDR16_HI:
6236 case R_PPC64_ADDR16_HIGHER:
6237 case R_PPC64_ADDR16_HIGHERA:
6238 case R_PPC64_ADDR16_HIGHEST:
6239 case R_PPC64_ADDR16_HIGHESTA:
6240 case R_PPC64_ADDR16_LO:
6241 case R_PPC64_ADDR16_LO_DS:
6242 case R_PPC64_ADDR24:
6243 case R_PPC64_ADDR32:
6244 case R_PPC64_UADDR16:
6245 case R_PPC64_UADDR32:
6246 case R_PPC64_UADDR64:
6251 if (local_syms != NULL)
6253 unsigned long r_symndx;
6254 Elf_Internal_Sym *sym;
6255 bfd *ibfd = sec->owner;
6257 r_symndx = ELF64_R_SYM (r_info);
6258 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6263 && (MUST_BE_DYN_RELOC (r_type)
6266 || h->root.type == bfd_link_hash_defweak
6267 || !h->def_regular))))
6268 || (ELIMINATE_COPY_RELOCS
6271 && (h->root.type == bfd_link_hash_defweak
6272 || !h->def_regular)))
6278 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6281 if (sym_sec != NULL)
6283 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6284 pp = (struct ppc_dyn_relocs **) vpp;
6288 void *vpp = &elf_section_data (sec)->local_dynrel;
6289 pp = (struct ppc_dyn_relocs **) vpp;
6292 /* elf_gc_sweep may have already removed all dyn relocs associated
6293 with local syms for a given section. Don't report a dynreloc
6299 while ((p = *pp) != NULL)
6303 if (!MUST_BE_DYN_RELOC (r_type))
6313 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6315 bfd_set_error (bfd_error_bad_value);
6319 /* Remove unused Official Procedure Descriptor entries. Currently we
6320 only remove those associated with functions in discarded link-once
6321 sections, or weakly defined functions that have been overridden. It
6322 would be possible to remove many more entries for statically linked
6326 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6327 bfd_boolean no_opd_opt,
6328 bfd_boolean non_overlapping)
6331 bfd_boolean some_edited = FALSE;
6332 asection *need_pad = NULL;
6334 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6337 Elf_Internal_Rela *relstart, *rel, *relend;
6338 Elf_Internal_Shdr *symtab_hdr;
6339 Elf_Internal_Sym *local_syms;
6340 struct elf_link_hash_entry **sym_hashes;
6344 bfd_boolean need_edit, add_aux_fields;
6345 bfd_size_type cnt_16b = 0;
6347 sec = bfd_get_section_by_name (ibfd, ".opd");
6348 if (sec == NULL || sec->size == 0)
6351 amt = sec->size * sizeof (long) / 8;
6352 opd_adjust = get_opd_info (sec);
6353 if (opd_adjust == NULL)
6355 /* check_relocs hasn't been called. Must be a ld -r link
6356 or --just-symbols object. */
6357 opd_adjust = bfd_alloc (obfd, amt);
6358 if (opd_adjust == NULL)
6360 ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
6361 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
6362 ppc64_elf_section_data (sec)->sec_type = sec_opd;
6364 memset (opd_adjust, 0, amt);
6369 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6372 if (sec->output_section == bfd_abs_section_ptr)
6375 /* Look through the section relocs. */
6376 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6380 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6381 sym_hashes = elf_sym_hashes (ibfd);
6383 /* Read the relocations. */
6384 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6386 if (relstart == NULL)
6389 /* First run through the relocs to check they are sane, and to
6390 determine whether we need to edit this opd section. */
6394 relend = relstart + sec->reloc_count;
6395 for (rel = relstart; rel < relend; )
6397 enum elf_ppc64_reloc_type r_type;
6398 unsigned long r_symndx;
6400 struct elf_link_hash_entry *h;
6401 Elf_Internal_Sym *sym;
6403 /* .opd contains a regular array of 16 or 24 byte entries. We're
6404 only interested in the reloc pointing to a function entry
6406 if (rel->r_offset != offset
6407 || rel + 1 >= relend
6408 || (rel + 1)->r_offset != offset + 8)
6410 /* If someone messes with .opd alignment then after a
6411 "ld -r" we might have padding in the middle of .opd.
6412 Also, there's nothing to prevent someone putting
6413 something silly in .opd with the assembler. No .opd
6414 optimization for them! */
6416 (*_bfd_error_handler)
6417 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6422 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6423 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6425 (*_bfd_error_handler)
6426 (_("%B: unexpected reloc type %u in .opd section"),
6432 r_symndx = ELF64_R_SYM (rel->r_info);
6433 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6437 if (sym_sec == NULL || sym_sec->owner == NULL)
6439 const char *sym_name;
6441 sym_name = h->root.root.string;
6443 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6446 (*_bfd_error_handler)
6447 (_("%B: undefined sym `%s' in .opd section"),
6453 /* opd entries are always for functions defined in the
6454 current input bfd. If the symbol isn't defined in the
6455 input bfd, then we won't be using the function in this
6456 bfd; It must be defined in a linkonce section in another
6457 bfd, or is weak. It's also possible that we are
6458 discarding the function due to a linker script /DISCARD/,
6459 which we test for via the output_section. */
6460 if (sym_sec->owner != ibfd
6461 || sym_sec->output_section == bfd_abs_section_ptr)
6466 || (rel + 1 == relend && rel->r_offset == offset + 16))
6468 if (sec->size == offset + 24)
6473 if (rel == relend && sec->size == offset + 16)
6481 if (rel->r_offset == offset + 24)
6483 else if (rel->r_offset != offset + 16)
6485 else if (rel + 1 < relend
6486 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6487 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6492 else if (rel + 2 < relend
6493 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6494 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6503 add_aux_fields = non_overlapping && cnt_16b > 0;
6505 if (need_edit || add_aux_fields)
6507 Elf_Internal_Rela *write_rel;
6508 bfd_byte *rptr, *wptr;
6509 bfd_byte *new_contents = NULL;
6513 /* This seems a waste of time as input .opd sections are all
6514 zeros as generated by gcc, but I suppose there's no reason
6515 this will always be so. We might start putting something in
6516 the third word of .opd entries. */
6517 if ((sec->flags & SEC_IN_MEMORY) == 0)
6520 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6525 if (local_syms != NULL
6526 && symtab_hdr->contents != (unsigned char *) local_syms)
6528 if (elf_section_data (sec)->relocs != relstart)
6532 sec->contents = loc;
6533 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6536 elf_section_data (sec)->relocs = relstart;
6538 new_contents = sec->contents;
6541 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6542 if (new_contents == NULL)
6546 wptr = new_contents;
6547 rptr = sec->contents;
6549 write_rel = relstart;
6553 for (rel = relstart; rel < relend; rel++)
6555 unsigned long r_symndx;
6557 struct elf_link_hash_entry *h;
6558 Elf_Internal_Sym *sym;
6560 r_symndx = ELF64_R_SYM (rel->r_info);
6561 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6565 if (rel->r_offset == offset)
6567 struct ppc_link_hash_entry *fdh = NULL;
6569 /* See if the .opd entry is full 24 byte or
6570 16 byte (with fd_aux entry overlapped with next
6573 if ((rel + 2 == relend && sec->size == offset + 16)
6574 || (rel + 3 < relend
6575 && rel[2].r_offset == offset + 16
6576 && rel[3].r_offset == offset + 24
6577 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6578 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6582 && h->root.root.string[0] == '.')
6584 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6585 ppc_hash_table (info));
6587 && fdh->elf.root.type != bfd_link_hash_defined
6588 && fdh->elf.root.type != bfd_link_hash_defweak)
6592 skip = (sym_sec->owner != ibfd
6593 || sym_sec->output_section == bfd_abs_section_ptr);
6596 if (fdh != NULL && sym_sec->owner == ibfd)
6598 /* Arrange for the function descriptor sym
6600 fdh->elf.root.u.def.value = 0;
6601 fdh->elf.root.u.def.section = sym_sec;
6603 opd_adjust[rel->r_offset / 8] = -1;
6607 /* We'll be keeping this opd entry. */
6611 /* Redefine the function descriptor symbol to
6612 this location in the opd section. It is
6613 necessary to update the value here rather
6614 than using an array of adjustments as we do
6615 for local symbols, because various places
6616 in the generic ELF code use the value
6617 stored in u.def.value. */
6618 fdh->elf.root.u.def.value = wptr - new_contents;
6619 fdh->adjust_done = 1;
6622 /* Local syms are a bit tricky. We could
6623 tweak them as they can be cached, but
6624 we'd need to look through the local syms
6625 for the function descriptor sym which we
6626 don't have at the moment. So keep an
6627 array of adjustments. */
6628 opd_adjust[rel->r_offset / 8]
6629 = (wptr - new_contents) - (rptr - sec->contents);
6632 memcpy (wptr, rptr, opd_ent_size);
6633 wptr += opd_ent_size;
6634 if (add_aux_fields && opd_ent_size == 16)
6636 memset (wptr, '\0', 8);
6640 rptr += opd_ent_size;
6641 offset += opd_ent_size;
6647 && !info->relocatable
6648 && !dec_dynrel_count (rel->r_info, sec, info,
6654 /* We need to adjust any reloc offsets to point to the
6655 new opd entries. While we're at it, we may as well
6656 remove redundant relocs. */
6657 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6658 if (write_rel != rel)
6659 memcpy (write_rel, rel, sizeof (*rel));
6664 sec->size = wptr - new_contents;
6665 sec->reloc_count = write_rel - relstart;
6668 free (sec->contents);
6669 sec->contents = new_contents;
6672 /* Fudge the header size too, as this is used later in
6673 elf_bfd_final_link if we are emitting relocs. */
6674 elf_section_data (sec)->rel_hdr.sh_size
6675 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6676 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6679 else if (elf_section_data (sec)->relocs != relstart)
6682 if (local_syms != NULL
6683 && symtab_hdr->contents != (unsigned char *) local_syms)
6685 if (!info->keep_memory)
6688 symtab_hdr->contents = (unsigned char *) local_syms;
6693 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6695 /* If we are doing a final link and the last .opd entry is just 16 byte
6696 long, add a 8 byte padding after it. */
6697 if (need_pad != NULL && !info->relocatable)
6701 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6703 BFD_ASSERT (need_pad->size > 0);
6705 p = bfd_malloc (need_pad->size + 8);
6709 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6710 p, 0, need_pad->size))
6713 need_pad->contents = p;
6714 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6718 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6722 need_pad->contents = p;
6725 memset (need_pad->contents + need_pad->size, 0, 8);
6726 need_pad->size += 8;
6732 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6735 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6737 struct ppc_link_hash_table *htab;
6739 htab = ppc_hash_table (info);
6740 if (htab->tls_get_addr != NULL)
6742 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6744 while (h->elf.root.type == bfd_link_hash_indirect
6745 || h->elf.root.type == bfd_link_hash_warning)
6746 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6748 htab->tls_get_addr = h;
6750 if (htab->tls_get_addr_fd == NULL
6752 && h->oh->is_func_descriptor
6753 && (h->oh->elf.root.type == bfd_link_hash_defined
6754 || h->oh->elf.root.type == bfd_link_hash_defweak))
6755 htab->tls_get_addr_fd = h->oh;
6758 if (htab->tls_get_addr_fd != NULL)
6760 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6762 while (h->elf.root.type == bfd_link_hash_indirect
6763 || h->elf.root.type == bfd_link_hash_warning)
6764 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6766 htab->tls_get_addr_fd = h;
6769 return _bfd_elf_tls_setup (obfd, info);
6772 /* Run through all the TLS relocs looking for optimization
6773 opportunities. The linker has been hacked (see ppc64elf.em) to do
6774 a preliminary section layout so that we know the TLS segment
6775 offsets. We can't optimize earlier because some optimizations need
6776 to know the tp offset, and we need to optimize before allocating
6777 dynamic relocations. */
6780 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6784 struct ppc_link_hash_table *htab;
6786 if (info->relocatable || info->shared)
6789 htab = ppc_hash_table (info);
6790 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6792 Elf_Internal_Sym *locsyms = NULL;
6793 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6794 unsigned char *toc_ref = NULL;
6796 /* Look at all the sections for this file, with TOC last. */
6797 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6800 sec = (sec == toc ? NULL
6801 : sec->next == NULL ? toc
6802 : sec->next == toc && toc->next ? toc->next
6804 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6806 Elf_Internal_Rela *relstart, *rel, *relend;
6807 int expecting_tls_get_addr;
6808 long toc_ref_index = 0;
6810 /* Read the relocations. */
6811 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6813 if (relstart == NULL)
6816 expecting_tls_get_addr = 0;
6817 relend = relstart + sec->reloc_count;
6818 for (rel = relstart; rel < relend; rel++)
6820 enum elf_ppc64_reloc_type r_type;
6821 unsigned long r_symndx;
6822 struct elf_link_hash_entry *h;
6823 Elf_Internal_Sym *sym;
6826 char tls_set, tls_clear, tls_type = 0;
6828 bfd_boolean ok_tprel, is_local;
6830 r_symndx = ELF64_R_SYM (rel->r_info);
6831 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6835 if (elf_section_data (sec)->relocs != relstart)
6837 if (toc_ref != NULL)
6840 && (elf_tdata (ibfd)->symtab_hdr.contents
6841 != (unsigned char *) locsyms))
6848 if (h->root.type != bfd_link_hash_defined
6849 && h->root.type != bfd_link_hash_defweak)
6851 value = h->root.u.def.value;
6854 /* Symbols referenced by TLS relocs must be of type
6855 STT_TLS. So no need for .opd local sym adjust. */
6856 value = sym->st_value;
6864 value += sym_sec->output_offset;
6865 value += sym_sec->output_section->vma;
6866 value -= htab->elf.tls_sec->vma;
6867 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6868 < (bfd_vma) 1 << 32);
6871 r_type = ELF64_R_TYPE (rel->r_info);
6874 case R_PPC64_GOT_TLSLD16:
6875 case R_PPC64_GOT_TLSLD16_LO:
6876 case R_PPC64_GOT_TLSLD16_HI:
6877 case R_PPC64_GOT_TLSLD16_HA:
6878 /* These relocs should never be against a symbol
6879 defined in a shared lib. Leave them alone if
6880 that turns out to be the case. */
6881 ppc64_tlsld_got (ibfd)->refcount -= 1;
6888 tls_type = TLS_TLS | TLS_LD;
6889 expecting_tls_get_addr = 1;
6892 case R_PPC64_GOT_TLSGD16:
6893 case R_PPC64_GOT_TLSGD16_LO:
6894 case R_PPC64_GOT_TLSGD16_HI:
6895 case R_PPC64_GOT_TLSGD16_HA:
6901 tls_set = TLS_TLS | TLS_TPRELGD;
6903 tls_type = TLS_TLS | TLS_GD;
6904 expecting_tls_get_addr = 1;
6907 case R_PPC64_GOT_TPREL16_DS:
6908 case R_PPC64_GOT_TPREL16_LO_DS:
6909 case R_PPC64_GOT_TPREL16_HI:
6910 case R_PPC64_GOT_TPREL16_HA:
6911 expecting_tls_get_addr = 0;
6916 tls_clear = TLS_TPREL;
6917 tls_type = TLS_TLS | TLS_TPREL;
6924 case R_PPC64_REL14_BRTAKEN:
6925 case R_PPC64_REL14_BRNTAKEN:
6928 && (h == &htab->tls_get_addr->elf
6929 || h == &htab->tls_get_addr_fd->elf))
6931 if (!expecting_tls_get_addr
6933 && ((ELF64_R_TYPE (rel[-1].r_info)
6935 || (ELF64_R_TYPE (rel[-1].r_info)
6936 == R_PPC64_TOC16_LO)))
6938 /* Check for toc tls entries. */
6942 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6946 if (retval > 1 && toc_tls != NULL)
6948 expecting_tls_get_addr = 1;
6949 if (toc_ref != NULL)
6950 toc_ref[toc_ref_index] = 1;
6954 if (expecting_tls_get_addr)
6956 struct plt_entry *ent;
6957 for (ent = h->plt.plist; ent; ent = ent->next)
6958 if (ent->addend == 0)
6960 if (ent->plt.refcount > 0)
6961 ent->plt.refcount -= 1;
6966 expecting_tls_get_addr = 0;
6970 case R_PPC64_TOC16_LO:
6972 expecting_tls_get_addr = 0;
6973 if (sym_sec == toc && toc != NULL)
6975 /* Mark this toc entry as referenced by a TLS
6976 code sequence. We can do that now in the
6977 case of R_PPC64_TLS, and after checking for
6978 tls_get_addr for the TOC16 relocs. */
6979 if (toc_ref == NULL)
6981 toc_ref = bfd_zmalloc (toc->size / 8);
6982 if (toc_ref == NULL)
6986 value = h->root.u.def.value;
6988 value = sym->st_value;
6989 value += rel->r_addend;
6990 BFD_ASSERT (value < toc->size && value % 8 == 0);
6991 toc_ref_index = value / 8;
6992 if (r_type == R_PPC64_TLS)
6993 toc_ref[toc_ref_index] = 1;
6997 case R_PPC64_TPREL64:
6998 expecting_tls_get_addr = 0;
7001 || !toc_ref[rel->r_offset / 8])
7006 tls_set = TLS_EXPLICIT;
7007 tls_clear = TLS_TPREL;
7013 case R_PPC64_DTPMOD64:
7014 expecting_tls_get_addr = 0;
7017 || !toc_ref[rel->r_offset / 8])
7019 if (rel + 1 < relend
7021 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7022 && rel[1].r_offset == rel->r_offset + 8)
7026 tls_set = TLS_EXPLICIT | TLS_GD;
7029 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7038 tls_set = TLS_EXPLICIT;
7044 expecting_tls_get_addr = 0;
7048 if ((tls_set & TLS_EXPLICIT) == 0)
7050 struct got_entry *ent;
7052 /* Adjust got entry for this reloc. */
7056 ent = elf_local_got_ents (ibfd)[r_symndx];
7058 for (; ent != NULL; ent = ent->next)
7059 if (ent->addend == rel->r_addend
7060 && ent->owner == ibfd
7061 && ent->tls_type == tls_type)
7068 /* We managed to get rid of a got entry. */
7069 if (ent->got.refcount > 0)
7070 ent->got.refcount -= 1;
7075 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7076 we'll lose one or two dyn relocs. */
7077 if (!dec_dynrel_count (rel->r_info, sec, info,
7081 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7083 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7089 *tls_mask |= tls_set;
7090 *tls_mask &= ~tls_clear;
7093 if (elf_section_data (sec)->relocs != relstart)
7097 if (toc_ref != NULL)
7101 && (elf_tdata (ibfd)->symtab_hdr.contents
7102 != (unsigned char *) locsyms))
7104 if (!info->keep_memory)
7107 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
7113 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7114 the values of any global symbols in a toc section that has been
7115 edited. Globals in toc sections should be a rarity, so this function
7116 sets a flag if any are found in toc sections other than the one just
7117 edited, so that futher hash table traversals can be avoided. */
7119 struct adjust_toc_info
7122 unsigned long *skip;
7123 bfd_boolean global_toc_syms;
7127 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7129 struct ppc_link_hash_entry *eh;
7130 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7132 if (h->root.type == bfd_link_hash_indirect)
7135 if (h->root.type == bfd_link_hash_warning)
7136 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7138 if (h->root.type != bfd_link_hash_defined
7139 && h->root.type != bfd_link_hash_defweak)
7142 eh = (struct ppc_link_hash_entry *) h;
7143 if (eh->adjust_done)
7146 if (eh->elf.root.u.def.section == toc_inf->toc)
7148 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7149 if (skip != (unsigned long) -1)
7150 eh->elf.root.u.def.value -= skip;
7153 (*_bfd_error_handler)
7154 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7155 eh->elf.root.u.def.section = &bfd_abs_section;
7156 eh->elf.root.u.def.value = 0;
7158 eh->adjust_done = 1;
7160 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7161 toc_inf->global_toc_syms = TRUE;
7166 /* Examine all relocs referencing .toc sections in order to remove
7167 unused .toc entries. */
7170 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7173 struct adjust_toc_info toc_inf;
7175 toc_inf.global_toc_syms = TRUE;
7176 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7178 asection *toc, *sec;
7179 Elf_Internal_Shdr *symtab_hdr;
7180 Elf_Internal_Sym *local_syms;
7181 struct elf_link_hash_entry **sym_hashes;
7182 Elf_Internal_Rela *relstart, *rel;
7183 unsigned long *skip, *drop;
7184 unsigned char *used;
7185 unsigned char *keep, last, some_unused;
7187 toc = bfd_get_section_by_name (ibfd, ".toc");
7190 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7191 || elf_discarded_section (toc))
7195 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7196 sym_hashes = elf_sym_hashes (ibfd);
7198 /* Look at sections dropped from the final link. */
7201 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7203 if (sec->reloc_count == 0
7204 || !elf_discarded_section (sec)
7205 || get_opd_info (sec)
7206 || (sec->flags & SEC_ALLOC) == 0
7207 || (sec->flags & SEC_DEBUGGING) != 0)
7210 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7211 if (relstart == NULL)
7214 /* Run through the relocs to see which toc entries might be
7216 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7218 enum elf_ppc64_reloc_type r_type;
7219 unsigned long r_symndx;
7221 struct elf_link_hash_entry *h;
7222 Elf_Internal_Sym *sym;
7225 r_type = ELF64_R_TYPE (rel->r_info);
7232 case R_PPC64_TOC16_LO:
7233 case R_PPC64_TOC16_HI:
7234 case R_PPC64_TOC16_HA:
7235 case R_PPC64_TOC16_DS:
7236 case R_PPC64_TOC16_LO_DS:
7240 r_symndx = ELF64_R_SYM (rel->r_info);
7241 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7249 val = h->root.u.def.value;
7251 val = sym->st_value;
7252 val += rel->r_addend;
7254 if (val >= toc->size)
7257 /* Anything in the toc ought to be aligned to 8 bytes.
7258 If not, don't mark as unused. */
7264 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7272 if (elf_section_data (sec)->relocs != relstart)
7279 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7283 if (local_syms != NULL
7284 && symtab_hdr->contents != (unsigned char *) local_syms)
7288 && elf_section_data (sec)->relocs != relstart)
7295 /* Now check all kept sections that might reference the toc.
7296 Check the toc itself last. */
7297 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7300 sec = (sec == toc ? NULL
7301 : sec->next == NULL ? toc
7302 : sec->next == toc && toc->next ? toc->next
7307 if (sec->reloc_count == 0
7308 || elf_discarded_section (sec)
7309 || get_opd_info (sec)
7310 || (sec->flags & SEC_ALLOC) == 0
7311 || (sec->flags & SEC_DEBUGGING) != 0)
7314 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7315 if (relstart == NULL)
7318 /* Mark toc entries referenced as used. */
7321 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7323 enum elf_ppc64_reloc_type r_type;
7324 unsigned long r_symndx;
7326 struct elf_link_hash_entry *h;
7327 Elf_Internal_Sym *sym;
7330 r_type = ELF64_R_TYPE (rel->r_info);
7334 case R_PPC64_TOC16_LO:
7335 case R_PPC64_TOC16_HI:
7336 case R_PPC64_TOC16_HA:
7337 case R_PPC64_TOC16_DS:
7338 case R_PPC64_TOC16_LO_DS:
7339 /* In case we're taking addresses of toc entries. */
7340 case R_PPC64_ADDR64:
7347 r_symndx = ELF64_R_SYM (rel->r_info);
7348 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7359 val = h->root.u.def.value;
7361 val = sym->st_value;
7362 val += rel->r_addend;
7364 if (val >= toc->size)
7367 /* For the toc section, we only mark as used if
7368 this entry itself isn't unused. */
7371 && (used[rel->r_offset >> 3]
7372 || !skip[rel->r_offset >> 3]))
7373 /* Do all the relocs again, to catch reference
7382 /* Merge the used and skip arrays. Assume that TOC
7383 doublewords not appearing as either used or unused belong
7384 to to an entry more than one doubleword in size. */
7385 for (drop = skip, keep = used, last = 0, some_unused = 0;
7386 drop < skip + (toc->size + 7) / 8;
7407 bfd_byte *contents, *src;
7410 /* Shuffle the toc contents, and at the same time convert the
7411 skip array from booleans into offsets. */
7412 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7415 elf_section_data (toc)->this_hdr.contents = contents;
7417 for (src = contents, off = 0, drop = skip;
7418 src < contents + toc->size;
7423 *drop = (unsigned long) -1;
7429 memcpy (src - off, src, 8);
7432 toc->rawsize = toc->size;
7433 toc->size = src - contents - off;
7435 if (toc->reloc_count != 0)
7437 Elf_Internal_Rela *wrel;
7440 /* Read toc relocs. */
7441 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7443 if (relstart == NULL)
7446 /* Remove unused toc relocs, and adjust those we keep. */
7448 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7449 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7451 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7452 wrel->r_info = rel->r_info;
7453 wrel->r_addend = rel->r_addend;
7456 else if (!dec_dynrel_count (rel->r_info, toc, info,
7457 &local_syms, NULL, NULL))
7460 toc->reloc_count = wrel - relstart;
7461 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7462 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7463 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7466 /* Adjust addends for relocs against the toc section sym. */
7467 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7469 if (sec->reloc_count == 0
7470 || elf_discarded_section (sec))
7473 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7475 if (relstart == NULL)
7478 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7480 enum elf_ppc64_reloc_type r_type;
7481 unsigned long r_symndx;
7483 struct elf_link_hash_entry *h;
7484 Elf_Internal_Sym *sym;
7486 r_type = ELF64_R_TYPE (rel->r_info);
7493 case R_PPC64_TOC16_LO:
7494 case R_PPC64_TOC16_HI:
7495 case R_PPC64_TOC16_HA:
7496 case R_PPC64_TOC16_DS:
7497 case R_PPC64_TOC16_LO_DS:
7498 case R_PPC64_ADDR64:
7502 r_symndx = ELF64_R_SYM (rel->r_info);
7503 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7507 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7510 rel->r_addend -= skip[rel->r_addend >> 3];
7514 /* We shouldn't have local or global symbols defined in the TOC,
7515 but handle them anyway. */
7516 if (local_syms != NULL)
7518 Elf_Internal_Sym *sym;
7520 for (sym = local_syms;
7521 sym < local_syms + symtab_hdr->sh_info;
7523 if (sym->st_shndx != SHN_UNDEF
7524 && (sym->st_shndx < SHN_LORESERVE
7525 || sym->st_shndx > SHN_HIRESERVE)
7526 && sym->st_value != 0
7527 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7529 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7530 sym->st_value -= skip[sym->st_value >> 3];
7533 (*_bfd_error_handler)
7534 (_("%s defined in removed toc entry"),
7535 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7538 sym->st_shndx = SHN_ABS;
7540 symtab_hdr->contents = (unsigned char *) local_syms;
7544 /* Finally, adjust any global syms defined in the toc. */
7545 if (toc_inf.global_toc_syms)
7548 toc_inf.skip = skip;
7549 toc_inf.global_toc_syms = FALSE;
7550 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7555 if (local_syms != NULL
7556 && symtab_hdr->contents != (unsigned char *) local_syms)
7558 if (!info->keep_memory)
7561 symtab_hdr->contents = (unsigned char *) local_syms;
7569 /* Allocate space in .plt, .got and associated reloc sections for
7573 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7575 struct bfd_link_info *info;
7576 struct ppc_link_hash_table *htab;
7578 struct ppc_link_hash_entry *eh;
7579 struct ppc_dyn_relocs *p;
7580 struct got_entry *gent;
7582 if (h->root.type == bfd_link_hash_indirect)
7585 if (h->root.type == bfd_link_hash_warning)
7586 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7588 info = (struct bfd_link_info *) inf;
7589 htab = ppc_hash_table (info);
7591 if (htab->elf.dynamic_sections_created
7593 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7595 struct plt_entry *pent;
7596 bfd_boolean doneone = FALSE;
7597 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7598 if (pent->plt.refcount > 0)
7600 /* If this is the first .plt entry, make room for the special
7604 s->size += PLT_INITIAL_ENTRY_SIZE;
7606 pent->plt.offset = s->size;
7608 /* Make room for this entry. */
7609 s->size += PLT_ENTRY_SIZE;
7611 /* Make room for the .glink code. */
7614 s->size += GLINK_CALL_STUB_SIZE;
7615 /* We need bigger stubs past index 32767. */
7616 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7620 /* We also need to make an entry in the .rela.plt section. */
7622 s->size += sizeof (Elf64_External_Rela);
7626 pent->plt.offset = (bfd_vma) -1;
7629 h->plt.plist = NULL;
7635 h->plt.plist = NULL;
7639 eh = (struct ppc_link_hash_entry *) h;
7640 /* Run through the TLS GD got entries first if we're changing them
7642 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7643 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7644 if (gent->got.refcount > 0
7645 && (gent->tls_type & TLS_GD) != 0)
7647 /* This was a GD entry that has been converted to TPREL. If
7648 there happens to be a TPREL entry we can use that one. */
7649 struct got_entry *ent;
7650 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7651 if (ent->got.refcount > 0
7652 && (ent->tls_type & TLS_TPREL) != 0
7653 && ent->addend == gent->addend
7654 && ent->owner == gent->owner)
7656 gent->got.refcount = 0;
7660 /* If not, then we'll be using our own TPREL entry. */
7661 if (gent->got.refcount != 0)
7662 gent->tls_type = TLS_TLS | TLS_TPREL;
7665 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7666 if (gent->got.refcount > 0)
7670 /* Make sure this symbol is output as a dynamic symbol.
7671 Undefined weak syms won't yet be marked as dynamic,
7672 nor will all TLS symbols. */
7673 if (h->dynindx == -1
7674 && !h->forced_local)
7676 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7680 if ((gent->tls_type & TLS_LD) != 0
7683 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7687 s = ppc64_elf_tdata (gent->owner)->got;
7688 gent->got.offset = s->size;
7690 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7691 dyn = htab->elf.dynamic_sections_created;
7693 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7694 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7695 || h->root.type != bfd_link_hash_undefweak))
7696 ppc64_elf_tdata (gent->owner)->relgot->size
7697 += (gent->tls_type & eh->tls_mask & TLS_GD
7698 ? 2 * sizeof (Elf64_External_Rela)
7699 : sizeof (Elf64_External_Rela));
7702 gent->got.offset = (bfd_vma) -1;
7704 if (eh->dyn_relocs == NULL)
7707 /* In the shared -Bsymbolic case, discard space allocated for
7708 dynamic pc-relative relocs against symbols which turn out to be
7709 defined in regular objects. For the normal shared case, discard
7710 space for relocs that have become local due to symbol visibility
7715 /* Relocs that use pc_count are those that appear on a call insn,
7716 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7717 generated via assembly. We want calls to protected symbols to
7718 resolve directly to the function rather than going via the plt.
7719 If people want function pointer comparisons to work as expected
7720 then they should avoid writing weird assembly. */
7721 if (SYMBOL_CALLS_LOCAL (info, h))
7723 struct ppc_dyn_relocs **pp;
7725 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7727 p->count -= p->pc_count;
7736 /* Also discard relocs on undefined weak syms with non-default
7738 if (eh->dyn_relocs != NULL
7739 && h->root.type == bfd_link_hash_undefweak)
7741 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7742 eh->dyn_relocs = NULL;
7744 /* Make sure this symbol is output as a dynamic symbol.
7745 Undefined weak syms won't yet be marked as dynamic. */
7746 else if (h->dynindx == -1
7747 && !h->forced_local)
7749 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7754 else if (ELIMINATE_COPY_RELOCS)
7756 /* For the non-shared case, discard space for relocs against
7757 symbols which turn out to need copy relocs or are not
7764 /* Make sure this symbol is output as a dynamic symbol.
7765 Undefined weak syms won't yet be marked as dynamic. */
7766 if (h->dynindx == -1
7767 && !h->forced_local)
7769 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7773 /* If that succeeded, we know we'll be keeping all the
7775 if (h->dynindx != -1)
7779 eh->dyn_relocs = NULL;
7784 /* Finally, allocate space. */
7785 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7787 asection *sreloc = elf_section_data (p->sec)->sreloc;
7788 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7794 /* Find any dynamic relocs that apply to read-only sections. */
7797 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7799 struct ppc_link_hash_entry *eh;
7800 struct ppc_dyn_relocs *p;
7802 if (h->root.type == bfd_link_hash_warning)
7803 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7805 eh = (struct ppc_link_hash_entry *) h;
7806 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7808 asection *s = p->sec->output_section;
7810 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7812 struct bfd_link_info *info = inf;
7814 info->flags |= DF_TEXTREL;
7816 /* Not an error, just cut short the traversal. */
7823 /* Set the sizes of the dynamic sections. */
7826 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7827 struct bfd_link_info *info)
7829 struct ppc_link_hash_table *htab;
7835 htab = ppc_hash_table (info);
7836 dynobj = htab->elf.dynobj;
7840 if (htab->elf.dynamic_sections_created)
7842 /* Set the contents of the .interp section to the interpreter. */
7843 if (info->executable)
7845 s = bfd_get_section_by_name (dynobj, ".interp");
7848 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7849 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7853 /* Set up .got offsets for local syms, and space for local dynamic
7855 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7857 struct got_entry **lgot_ents;
7858 struct got_entry **end_lgot_ents;
7860 bfd_size_type locsymcount;
7861 Elf_Internal_Shdr *symtab_hdr;
7864 if (!is_ppc64_elf_target (ibfd->xvec))
7867 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7869 s = ppc64_elf_tdata (ibfd)->got;
7870 ppc64_tlsld_got (ibfd)->offset = s->size;
7874 srel = ppc64_elf_tdata (ibfd)->relgot;
7875 srel->size += sizeof (Elf64_External_Rela);
7879 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7881 for (s = ibfd->sections; s != NULL; s = s->next)
7883 struct ppc_dyn_relocs *p;
7885 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
7887 if (!bfd_is_abs_section (p->sec)
7888 && bfd_is_abs_section (p->sec->output_section))
7890 /* Input section has been discarded, either because
7891 it is a copy of a linkonce section or due to
7892 linker script /DISCARD/, so we'll be discarding
7895 else if (p->count != 0)
7897 srel = elf_section_data (p->sec)->sreloc;
7898 srel->size += p->count * sizeof (Elf64_External_Rela);
7899 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7900 info->flags |= DF_TEXTREL;
7905 lgot_ents = elf_local_got_ents (ibfd);
7909 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7910 locsymcount = symtab_hdr->sh_info;
7911 end_lgot_ents = lgot_ents + locsymcount;
7912 lgot_masks = (char *) end_lgot_ents;
7913 s = ppc64_elf_tdata (ibfd)->got;
7914 srel = ppc64_elf_tdata (ibfd)->relgot;
7915 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7917 struct got_entry *ent;
7919 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7920 if (ent->got.refcount > 0)
7922 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7924 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7926 ppc64_tlsld_got (ibfd)->offset = s->size;
7929 srel->size += sizeof (Elf64_External_Rela);
7931 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7935 ent->got.offset = s->size;
7936 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7940 srel->size += 2 * sizeof (Elf64_External_Rela);
7946 srel->size += sizeof (Elf64_External_Rela);
7951 ent->got.offset = (bfd_vma) -1;
7955 /* Allocate global sym .plt and .got entries, and space for global
7956 sym dynamic relocs. */
7957 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7959 /* We now have determined the sizes of the various dynamic sections.
7960 Allocate memory for them. */
7962 for (s = dynobj->sections; s != NULL; s = s->next)
7964 if ((s->flags & SEC_LINKER_CREATED) == 0)
7967 if (s == htab->brlt || s == htab->relbrlt)
7968 /* These haven't been allocated yet; don't strip. */
7970 else if (s == htab->got
7973 || s == htab->dynbss)
7975 /* Strip this section if we don't need it; see the
7978 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
7982 if (s != htab->relplt)
7985 /* We use the reloc_count field as a counter if we need
7986 to copy relocs into the output file. */
7992 /* It's not one of our sections, so don't allocate space. */
7998 /* If we don't need this section, strip it from the
7999 output file. This is mostly to handle .rela.bss and
8000 .rela.plt. We must create both sections in
8001 create_dynamic_sections, because they must be created
8002 before the linker maps input sections to output
8003 sections. The linker does that before
8004 adjust_dynamic_symbol is called, and it is that
8005 function which decides whether anything needs to go
8006 into these sections. */
8007 s->flags |= SEC_EXCLUDE;
8011 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8014 /* Allocate memory for the section contents. We use bfd_zalloc
8015 here in case unused entries are not reclaimed before the
8016 section's contents are written out. This should not happen,
8017 but this way if it does we get a R_PPC64_NONE reloc in .rela
8018 sections instead of garbage.
8019 We also rely on the section contents being zero when writing
8021 s->contents = bfd_zalloc (dynobj, s->size);
8022 if (s->contents == NULL)
8026 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8028 if (!is_ppc64_elf_target (ibfd->xvec))
8031 s = ppc64_elf_tdata (ibfd)->got;
8032 if (s != NULL && s != htab->got)
8035 s->flags |= SEC_EXCLUDE;
8038 s->contents = bfd_zalloc (ibfd, s->size);
8039 if (s->contents == NULL)
8043 s = ppc64_elf_tdata (ibfd)->relgot;
8047 s->flags |= SEC_EXCLUDE;
8050 s->contents = bfd_zalloc (ibfd, s->size);
8051 if (s->contents == NULL)
8059 if (htab->elf.dynamic_sections_created)
8061 /* Add some entries to the .dynamic section. We fill in the
8062 values later, in ppc64_elf_finish_dynamic_sections, but we
8063 must add the entries now so that we get the correct size for
8064 the .dynamic section. The DT_DEBUG entry is filled in by the
8065 dynamic linker and used by the debugger. */
8066 #define add_dynamic_entry(TAG, VAL) \
8067 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8069 if (info->executable)
8071 if (!add_dynamic_entry (DT_DEBUG, 0))
8075 if (htab->plt != NULL && htab->plt->size != 0)
8077 if (!add_dynamic_entry (DT_PLTGOT, 0)
8078 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8079 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8080 || !add_dynamic_entry (DT_JMPREL, 0)
8081 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8087 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8088 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8094 if (!add_dynamic_entry (DT_RELA, 0)
8095 || !add_dynamic_entry (DT_RELASZ, 0)
8096 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8099 /* If any dynamic relocs apply to a read-only section,
8100 then we need a DT_TEXTREL entry. */
8101 if ((info->flags & DF_TEXTREL) == 0)
8102 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8104 if ((info->flags & DF_TEXTREL) != 0)
8106 if (!add_dynamic_entry (DT_TEXTREL, 0))
8111 #undef add_dynamic_entry
8116 /* Determine the type of stub needed, if any, for a call. */
8118 static inline enum ppc_stub_type
8119 ppc_type_of_stub (asection *input_sec,
8120 const Elf_Internal_Rela *rel,
8121 struct ppc_link_hash_entry **hash,
8122 bfd_vma destination)
8124 struct ppc_link_hash_entry *h = *hash;
8126 bfd_vma branch_offset;
8127 bfd_vma max_branch_offset;
8128 enum elf_ppc64_reloc_type r_type;
8132 struct ppc_link_hash_entry *fdh = h;
8134 && fdh->oh->is_func_descriptor)
8137 if (fdh->elf.dynindx != -1)
8139 struct plt_entry *ent;
8141 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8142 if (ent->addend == rel->r_addend
8143 && ent->plt.offset != (bfd_vma) -1)
8146 return ppc_stub_plt_call;
8150 /* Here, we know we don't have a plt entry. If we don't have a
8151 either a defined function descriptor or a defined entry symbol
8152 in a regular object file, then it is pointless trying to make
8153 any other type of stub. */
8154 if (!((fdh->elf.root.type == bfd_link_hash_defined
8155 || fdh->elf.root.type == bfd_link_hash_defweak)
8156 && fdh->elf.root.u.def.section->output_section != NULL)
8157 && !((h->elf.root.type == bfd_link_hash_defined
8158 || h->elf.root.type == bfd_link_hash_defweak)
8159 && h->elf.root.u.def.section->output_section != NULL))
8160 return ppc_stub_none;
8163 /* Determine where the call point is. */
8164 location = (input_sec->output_offset
8165 + input_sec->output_section->vma
8168 branch_offset = destination - location;
8169 r_type = ELF64_R_TYPE (rel->r_info);
8171 /* Determine if a long branch stub is needed. */
8172 max_branch_offset = 1 << 25;
8173 if (r_type != R_PPC64_REL24)
8174 max_branch_offset = 1 << 15;
8176 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8177 /* We need a stub. Figure out whether a long_branch or plt_branch
8179 return ppc_stub_long_branch;
8181 return ppc_stub_none;
8184 /* Build a .plt call stub. */
8186 static inline bfd_byte *
8187 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
8189 #define PPC_LO(v) ((v) & 0xffff)
8190 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8191 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8193 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8194 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8195 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8196 if (PPC_HA (offset + 8) != PPC_HA (offset))
8197 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
8199 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
8200 if (PPC_HA (offset + 8) != PPC_HA (offset))
8201 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
8203 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8204 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8205 bfd_put_32 (obfd, BCTR, p), p += 4;
8210 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8212 struct ppc_stub_hash_entry *stub_entry;
8213 struct ppc_branch_hash_entry *br_entry;
8214 struct bfd_link_info *info;
8215 struct ppc_link_hash_table *htab;
8219 struct plt_entry *ent;
8223 /* Massage our args to the form they really have. */
8224 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8227 htab = ppc_hash_table (info);
8229 /* Make a note of the offset within the stubs for this entry. */
8230 stub_entry->stub_offset = stub_entry->stub_sec->size;
8231 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
8233 htab->stub_count[stub_entry->stub_type - 1] += 1;
8234 switch (stub_entry->stub_type)
8236 case ppc_stub_long_branch:
8237 case ppc_stub_long_branch_r2off:
8238 /* Branches are relative. This is where we are going to. */
8239 off = dest = (stub_entry->target_value
8240 + stub_entry->target_section->output_offset
8241 + stub_entry->target_section->output_section->vma);
8243 /* And this is where we are coming from. */
8244 off -= (stub_entry->stub_offset
8245 + stub_entry->stub_sec->output_offset
8246 + stub_entry->stub_sec->output_section->vma);
8248 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8254 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8255 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8256 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8258 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8260 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8265 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
8267 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8269 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8270 stub_entry->root.string);
8271 htab->stub_error = TRUE;
8275 if (info->emitrelocations)
8277 Elf_Internal_Rela *relocs, *r;
8278 struct bfd_elf_section_data *elfsec_data;
8280 elfsec_data = elf_section_data (stub_entry->stub_sec);
8281 relocs = elfsec_data->relocs;
8284 bfd_size_type relsize;
8285 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8286 relocs = bfd_alloc (htab->stub_bfd, relsize);
8289 elfsec_data->relocs = relocs;
8290 elfsec_data->rel_hdr.sh_size = relsize;
8291 elfsec_data->rel_hdr.sh_entsize = 24;
8292 stub_entry->stub_sec->reloc_count = 0;
8294 r = relocs + stub_entry->stub_sec->reloc_count;
8295 stub_entry->stub_sec->reloc_count += 1;
8296 r->r_offset = loc - stub_entry->stub_sec->contents;
8297 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8299 if (stub_entry->h != NULL)
8301 struct elf_link_hash_entry **hashes;
8302 unsigned long symndx;
8303 struct ppc_link_hash_entry *h;
8305 hashes = elf_sym_hashes (htab->stub_bfd);
8308 bfd_size_type hsize;
8310 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8311 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8314 elf_sym_hashes (htab->stub_bfd) = hashes;
8315 htab->stub_globals = 1;
8317 symndx = htab->stub_globals++;
8319 hashes[symndx] = &h->elf;
8320 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8321 if (h->oh != NULL && h->oh->is_func)
8323 if (h->elf.root.u.def.section != stub_entry->target_section)
8324 /* H is an opd symbol. The addend must be zero. */
8328 off = (h->elf.root.u.def.value
8329 + h->elf.root.u.def.section->output_offset
8330 + h->elf.root.u.def.section->output_section->vma);
8337 case ppc_stub_plt_branch:
8338 case ppc_stub_plt_branch_r2off:
8339 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8340 stub_entry->root.string + 9,
8342 if (br_entry == NULL)
8344 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8345 stub_entry->root.string);
8346 htab->stub_error = TRUE;
8350 off = (stub_entry->target_value
8351 + stub_entry->target_section->output_offset
8352 + stub_entry->target_section->output_section->vma);
8354 bfd_put_64 (htab->brlt->owner, off,
8355 htab->brlt->contents + br_entry->offset);
8357 if (htab->relbrlt != NULL)
8359 /* Create a reloc for the branch lookup table entry. */
8360 Elf_Internal_Rela rela;
8363 rela.r_offset = (br_entry->offset
8364 + htab->brlt->output_offset
8365 + htab->brlt->output_section->vma);
8366 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8367 rela.r_addend = off;
8369 rl = htab->relbrlt->contents;
8370 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8371 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8373 else if (info->emitrelocations)
8375 Elf_Internal_Rela *relocs, *r;
8376 struct bfd_elf_section_data *elfsec_data;
8378 elfsec_data = elf_section_data (htab->brlt);
8379 relocs = elfsec_data->relocs;
8382 bfd_size_type relsize;
8383 relsize = htab->brlt->reloc_count * sizeof (*relocs);
8384 relocs = bfd_alloc (htab->brlt->owner, relsize);
8387 elfsec_data->relocs = relocs;
8388 elfsec_data->rel_hdr.sh_size = relsize;
8389 elfsec_data->rel_hdr.sh_entsize = 24;
8390 htab->brlt->reloc_count = 0;
8392 r = relocs + htab->brlt->reloc_count;
8393 htab->brlt->reloc_count += 1;
8394 r->r_offset = (br_entry->offset
8395 + htab->brlt->output_offset
8396 + htab->brlt->output_section->vma);
8397 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8401 off = (br_entry->offset
8402 + htab->brlt->output_offset
8403 + htab->brlt->output_section->vma
8404 - elf_gp (htab->brlt->output_section->owner)
8405 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8407 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8409 (*_bfd_error_handler)
8410 (_("linkage table error against `%s'"),
8411 stub_entry->root.string);
8412 bfd_set_error (bfd_error_bad_value);
8413 htab->stub_error = TRUE;
8418 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8420 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8422 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8429 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8430 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8431 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8433 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8435 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8437 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8439 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8443 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
8445 bfd_put_32 (htab->stub_bfd, BCTR, loc);
8448 case ppc_stub_plt_call:
8449 /* Do the best we can for shared libraries built without
8450 exporting ".foo" for each "foo". This can happen when symbol
8451 versioning scripts strip all bar a subset of symbols. */
8452 if (stub_entry->h->oh != NULL
8453 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
8454 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
8456 /* Point the symbol at the stub. There may be multiple stubs,
8457 we don't really care; The main thing is to make this sym
8458 defined somewhere. Maybe defining the symbol in the stub
8459 section is a silly idea. If we didn't do this, htab->top_id
8461 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8462 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8463 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8466 /* Now build the stub. */
8468 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8469 if (ent->addend == stub_entry->addend)
8471 off = ent->plt.offset;
8474 if (off >= (bfd_vma) -2)
8477 off &= ~ (bfd_vma) 1;
8478 off += (htab->plt->output_offset
8479 + htab->plt->output_section->vma
8480 - elf_gp (htab->plt->output_section->owner)
8481 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8483 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8485 (*_bfd_error_handler)
8486 (_("linkage table error against `%s'"),
8487 stub_entry->h->elf.root.root.string);
8488 bfd_set_error (bfd_error_bad_value);
8489 htab->stub_error = TRUE;
8493 p = build_plt_stub (htab->stub_bfd, loc, off);
8502 stub_entry->stub_sec->size += size;
8504 if (htab->emit_stub_syms)
8506 struct elf_link_hash_entry *h;
8509 const char *const stub_str[] = { "long_branch",
8510 "long_branch_r2off",
8515 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8516 len2 = strlen (stub_entry->root.string);
8517 name = bfd_malloc (len1 + len2 + 2);
8520 memcpy (name, stub_entry->root.string, 9);
8521 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8522 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8523 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8526 if (h->root.type == bfd_link_hash_new)
8528 h->root.type = bfd_link_hash_defined;
8529 h->root.u.def.section = stub_entry->stub_sec;
8530 h->root.u.def.value = stub_entry->stub_offset;
8533 h->ref_regular_nonweak = 1;
8534 h->forced_local = 1;
8542 /* As above, but don't actually build the stub. Just bump offset so
8543 we know stub section sizes, and select plt_branch stubs where
8544 long_branch stubs won't do. */
8547 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8549 struct ppc_stub_hash_entry *stub_entry;
8550 struct bfd_link_info *info;
8551 struct ppc_link_hash_table *htab;
8555 /* Massage our args to the form they really have. */
8556 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8559 htab = ppc_hash_table (info);
8561 if (stub_entry->stub_type == ppc_stub_plt_call)
8563 struct plt_entry *ent;
8565 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8566 if (ent->addend == stub_entry->addend)
8568 off = ent->plt.offset & ~(bfd_vma) 1;
8571 if (off >= (bfd_vma) -2)
8573 off += (htab->plt->output_offset
8574 + htab->plt->output_section->vma
8575 - elf_gp (htab->plt->output_section->owner)
8576 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8578 size = PLT_CALL_STUB_SIZE;
8579 if (PPC_HA (off + 16) != PPC_HA (off))
8584 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8586 off = (stub_entry->target_value
8587 + stub_entry->target_section->output_offset
8588 + stub_entry->target_section->output_section->vma);
8589 off -= (stub_entry->stub_sec->size
8590 + stub_entry->stub_sec->output_offset
8591 + stub_entry->stub_sec->output_section->vma);
8593 /* Reset the stub type from the plt variant in case we now
8594 can reach with a shorter stub. */
8595 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8596 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8599 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8605 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8606 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8608 struct ppc_branch_hash_entry *br_entry;
8610 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8611 stub_entry->root.string + 9,
8613 if (br_entry == NULL)
8615 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8616 stub_entry->root.string);
8617 htab->stub_error = TRUE;
8621 if (br_entry->iter != htab->stub_iteration)
8623 br_entry->iter = htab->stub_iteration;
8624 br_entry->offset = htab->brlt->size;
8625 htab->brlt->size += 8;
8627 if (htab->relbrlt != NULL)
8628 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8629 else if (info->emitrelocations)
8631 htab->brlt->reloc_count += 1;
8632 htab->brlt->flags |= SEC_RELOC;
8636 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8638 if (stub_entry->stub_type != ppc_stub_plt_branch)
8641 else if (info->emitrelocations)
8643 stub_entry->stub_sec->reloc_count += 1;
8644 stub_entry->stub_sec->flags |= SEC_RELOC;
8648 stub_entry->stub_sec->size += size;
8652 /* Set up various things so that we can make a list of input sections
8653 for each output section included in the link. Returns -1 on error,
8654 0 when no stubs will be needed, and 1 on success. */
8657 ppc64_elf_setup_section_lists (bfd *output_bfd,
8658 struct bfd_link_info *info,
8662 int top_id, top_index, id;
8664 asection **input_list;
8666 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8668 htab->no_multi_toc = no_multi_toc;
8670 if (htab->brlt == NULL)
8673 /* Find the top input section id. */
8674 for (input_bfd = info->input_bfds, top_id = 3;
8676 input_bfd = input_bfd->link_next)
8678 for (section = input_bfd->sections;
8680 section = section->next)
8682 if (top_id < section->id)
8683 top_id = section->id;
8687 htab->top_id = top_id;
8688 amt = sizeof (struct map_stub) * (top_id + 1);
8689 htab->stub_group = bfd_zmalloc (amt);
8690 if (htab->stub_group == NULL)
8693 /* Set toc_off for com, und, abs and ind sections. */
8694 for (id = 0; id < 3; id++)
8695 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8697 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8699 /* We can't use output_bfd->section_count here to find the top output
8700 section index as some sections may have been removed, and
8701 strip_excluded_output_sections doesn't renumber the indices. */
8702 for (section = output_bfd->sections, top_index = 0;
8704 section = section->next)
8706 if (top_index < section->index)
8707 top_index = section->index;
8710 htab->top_index = top_index;
8711 amt = sizeof (asection *) * (top_index + 1);
8712 input_list = bfd_zmalloc (amt);
8713 htab->input_list = input_list;
8714 if (input_list == NULL)
8720 /* The linker repeatedly calls this function for each TOC input section
8721 and linker generated GOT section. Group input bfds such that the toc
8722 within a group is less than 64k in size. Will break with cute linker
8723 scripts that play games with dot in the output toc section. */
8726 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8728 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8730 if (!htab->no_multi_toc)
8732 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8733 bfd_vma off = addr - htab->toc_curr;
8735 if (off + isec->size > 0x10000)
8736 htab->toc_curr = addr;
8738 elf_gp (isec->owner) = (htab->toc_curr
8739 - elf_gp (isec->output_section->owner)
8744 /* Called after the last call to the above function. */
8747 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8749 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8751 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8753 /* toc_curr tracks the TOC offset used for code sections below in
8754 ppc64_elf_next_input_section. Start off at 0x8000. */
8755 htab->toc_curr = TOC_BASE_OFF;
8758 /* No toc references were found in ISEC. If the code in ISEC makes no
8759 calls, then there's no need to use toc adjusting stubs when branching
8760 into ISEC. Actually, indirect calls from ISEC are OK as they will
8761 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8762 needed, and 2 if a cyclical call-graph was found but no other reason
8763 for a stub was detected. If called from the top level, a return of
8764 2 means the same as a return of 0. */
8767 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8769 Elf_Internal_Rela *relstart, *rel;
8770 Elf_Internal_Sym *local_syms;
8772 struct ppc_link_hash_table *htab;
8774 /* We know none of our code bearing sections will need toc stubs. */
8775 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8778 if (isec->size == 0)
8781 if (isec->output_section == NULL)
8784 /* Hack for linux kernel. .fixup contains branches, but only back to
8785 the function that hit an exception. */
8786 if (strcmp (isec->name, ".fixup") == 0)
8789 if (isec->reloc_count == 0)
8792 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8794 if (relstart == NULL)
8797 /* Look for branches to outside of this section. */
8800 htab = ppc_hash_table (info);
8801 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8803 enum elf_ppc64_reloc_type r_type;
8804 unsigned long r_symndx;
8805 struct elf_link_hash_entry *h;
8806 Elf_Internal_Sym *sym;
8812 r_type = ELF64_R_TYPE (rel->r_info);
8813 if (r_type != R_PPC64_REL24
8814 && r_type != R_PPC64_REL14
8815 && r_type != R_PPC64_REL14_BRTAKEN
8816 && r_type != R_PPC64_REL14_BRNTAKEN)
8819 r_symndx = ELF64_R_SYM (rel->r_info);
8820 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8827 /* Calls to dynamic lib functions go through a plt call stub
8828 that uses r2. Branches to undefined symbols might be a call
8829 using old-style dot symbols that can be satisfied by a plt
8830 call into a new-style dynamic library. */
8831 if (sym_sec == NULL)
8833 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8836 && eh->oh->elf.plt.plist != NULL)
8842 /* Ignore other undefined symbols. */
8846 /* Assume branches to other sections not included in the link need
8847 stubs too, to cover -R and absolute syms. */
8848 if (sym_sec->output_section == NULL)
8855 sym_value = sym->st_value;
8858 if (h->root.type != bfd_link_hash_defined
8859 && h->root.type != bfd_link_hash_defweak)
8861 sym_value = h->root.u.def.value;
8863 sym_value += rel->r_addend;
8865 /* If this branch reloc uses an opd sym, find the code section. */
8866 opd_adjust = get_opd_info (sym_sec);
8867 if (opd_adjust != NULL)
8873 adjust = opd_adjust[sym->st_value / 8];
8875 /* Assume deleted functions won't ever be called. */
8877 sym_value += adjust;
8880 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8881 if (dest == (bfd_vma) -1)
8886 + sym_sec->output_offset
8887 + sym_sec->output_section->vma);
8889 /* Ignore branch to self. */
8890 if (sym_sec == isec)
8893 /* If the called function uses the toc, we need a stub. */
8894 if (sym_sec->has_toc_reloc
8895 || sym_sec->makes_toc_func_call)
8901 /* Assume any branch that needs a long branch stub might in fact
8902 need a plt_branch stub. A plt_branch stub uses r2. */
8903 else if (dest - (isec->output_offset
8904 + isec->output_section->vma
8905 + rel->r_offset) + (1 << 25) >= (2 << 25))
8911 /* If calling back to a section in the process of being tested, we
8912 can't say for sure that no toc adjusting stubs are needed, so
8913 don't return zero. */
8914 else if (sym_sec->call_check_in_progress)
8917 /* Branches to another section that itself doesn't have any TOC
8918 references are OK. Recursively call ourselves to check. */
8919 else if (sym_sec->id <= htab->top_id
8920 && htab->stub_group[sym_sec->id].toc_off == 0)
8924 /* Mark current section as indeterminate, so that other
8925 sections that call back to current won't be marked as
8927 isec->call_check_in_progress = 1;
8928 recur = toc_adjusting_stub_needed (info, sym_sec);
8929 isec->call_check_in_progress = 0;
8933 /* An error. Exit. */
8937 else if (recur <= 1)
8939 /* Known result. Mark as checked and set section flag. */
8940 htab->stub_group[sym_sec->id].toc_off = 1;
8943 sym_sec->makes_toc_func_call = 1;
8950 /* Unknown result. Continue checking. */
8956 if (local_syms != NULL
8957 && (elf_tdata (isec->owner)->symtab_hdr.contents
8958 != (unsigned char *) local_syms))
8960 if (elf_section_data (isec)->relocs != relstart)
8966 /* The linker repeatedly calls this function for each input section,
8967 in the order that input sections are linked into output sections.
8968 Build lists of input sections to determine groupings between which
8969 we may insert linker stubs. */
8972 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8974 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8976 if ((isec->output_section->flags & SEC_CODE) != 0
8977 && isec->output_section->index <= htab->top_index)
8979 asection **list = htab->input_list + isec->output_section->index;
8980 /* Steal the link_sec pointer for our list. */
8981 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8982 /* This happens to make the list in reverse order,
8983 which is what we want. */
8984 PREV_SEC (isec) = *list;
8988 if (htab->multi_toc_needed)
8990 /* If a code section has a function that uses the TOC then we need
8991 to use the right TOC (obviously). Also, make sure that .opd gets
8992 the correct TOC value for R_PPC64_TOC relocs that don't have or
8993 can't find their function symbol (shouldn't ever happen now). */
8994 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8996 if (elf_gp (isec->owner) != 0)
8997 htab->toc_curr = elf_gp (isec->owner);
8999 else if (htab->stub_group[isec->id].toc_off == 0)
9001 int ret = toc_adjusting_stub_needed (info, isec);
9005 isec->makes_toc_func_call = ret & 1;
9009 /* Functions that don't use the TOC can belong in any TOC group.
9010 Use the last TOC base. This happens to make _init and _fini
9012 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9016 /* See whether we can group stub sections together. Grouping stub
9017 sections may result in fewer stubs. More importantly, we need to
9018 put all .init* and .fini* stubs at the beginning of the .init or
9019 .fini output sections respectively, because glibc splits the
9020 _init and _fini functions into multiple parts. Putting a stub in
9021 the middle of a function is not a good idea. */
9024 group_sections (struct ppc_link_hash_table *htab,
9025 bfd_size_type stub_group_size,
9026 bfd_boolean stubs_always_before_branch)
9029 bfd_size_type stub14_group_size;
9030 bfd_boolean suppress_size_errors;
9032 suppress_size_errors = FALSE;
9033 stub14_group_size = stub_group_size;
9034 if (stub_group_size == 1)
9036 /* Default values. */
9037 if (stubs_always_before_branch)
9039 stub_group_size = 0x1e00000;
9040 stub14_group_size = 0x7800;
9044 stub_group_size = 0x1c00000;
9045 stub14_group_size = 0x7000;
9047 suppress_size_errors = TRUE;
9050 list = htab->input_list + htab->top_index;
9053 asection *tail = *list;
9054 while (tail != NULL)
9058 bfd_size_type total;
9059 bfd_boolean big_sec;
9064 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9065 ? stub14_group_size : stub_group_size);
9066 if (big_sec && !suppress_size_errors)
9067 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9069 curr_toc = htab->stub_group[tail->id].toc_off;
9071 while ((prev = PREV_SEC (curr)) != NULL
9072 && ((total += curr->output_offset - prev->output_offset)
9073 < (ppc64_elf_section_data (prev)->has_14bit_branch
9074 ? stub14_group_size : stub_group_size))
9075 && htab->stub_group[prev->id].toc_off == curr_toc)
9078 /* OK, the size from the start of CURR to the end is less
9079 than stub_group_size and thus can be handled by one stub
9080 section. (or the tail section is itself larger than
9081 stub_group_size, in which case we may be toast.) We
9082 should really be keeping track of the total size of stubs
9083 added here, as stubs contribute to the final output
9084 section size. That's a little tricky, and this way will
9085 only break if stubs added make the total size more than
9086 2^25, ie. for the default stub_group_size, if stubs total
9087 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9090 prev = PREV_SEC (tail);
9091 /* Set up this stub group. */
9092 htab->stub_group[tail->id].link_sec = curr;
9094 while (tail != curr && (tail = prev) != NULL);
9096 /* But wait, there's more! Input sections up to stub_group_size
9097 bytes before the stub section can be handled by it too.
9098 Don't do this if we have a really large section after the
9099 stubs, as adding more stubs increases the chance that
9100 branches may not reach into the stub section. */
9101 if (!stubs_always_before_branch && !big_sec)
9105 && ((total += tail->output_offset - prev->output_offset)
9106 < (ppc64_elf_section_data (prev)->has_14bit_branch
9107 ? stub14_group_size : stub_group_size))
9108 && htab->stub_group[prev->id].toc_off == curr_toc)
9111 prev = PREV_SEC (tail);
9112 htab->stub_group[tail->id].link_sec = curr;
9118 while (list-- != htab->input_list);
9119 free (htab->input_list);
9123 /* Determine and set the size of the stub section for a final link.
9125 The basic idea here is to examine all the relocations looking for
9126 PC-relative calls to a target that is unreachable with a "bl"
9130 ppc64_elf_size_stubs (bfd *output_bfd,
9131 struct bfd_link_info *info,
9132 bfd_signed_vma group_size,
9133 asection *(*add_stub_section) (const char *, asection *),
9134 void (*layout_sections_again) (void))
9136 bfd_size_type stub_group_size;
9137 bfd_boolean stubs_always_before_branch;
9138 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9140 /* Stash our params away. */
9141 htab->add_stub_section = add_stub_section;
9142 htab->layout_sections_again = layout_sections_again;
9143 stubs_always_before_branch = group_size < 0;
9145 stub_group_size = -group_size;
9147 stub_group_size = group_size;
9149 group_sections (htab, stub_group_size, stubs_always_before_branch);
9154 unsigned int bfd_indx;
9157 htab->stub_iteration += 1;
9159 for (input_bfd = info->input_bfds, bfd_indx = 0;
9161 input_bfd = input_bfd->link_next, bfd_indx++)
9163 Elf_Internal_Shdr *symtab_hdr;
9165 Elf_Internal_Sym *local_syms = NULL;
9167 if (!is_ppc64_elf_target (input_bfd->xvec))
9170 /* We'll need the symbol table in a second. */
9171 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9172 if (symtab_hdr->sh_info == 0)
9175 /* Walk over each section attached to the input bfd. */
9176 for (section = input_bfd->sections;
9178 section = section->next)
9180 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
9182 /* If there aren't any relocs, then there's nothing more
9184 if ((section->flags & SEC_RELOC) == 0
9185 || (section->flags & SEC_ALLOC) == 0
9186 || (section->flags & SEC_LOAD) == 0
9187 || (section->flags & SEC_CODE) == 0
9188 || section->reloc_count == 0)
9191 /* If this section is a link-once section that will be
9192 discarded, then don't create any stubs. */
9193 if (section->output_section == NULL
9194 || section->output_section->owner != output_bfd)
9197 /* Get the relocs. */
9199 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
9201 if (internal_relocs == NULL)
9202 goto error_ret_free_local;
9204 /* Now examine each relocation. */
9205 irela = internal_relocs;
9206 irelaend = irela + section->reloc_count;
9207 for (; irela < irelaend; irela++)
9209 enum elf_ppc64_reloc_type r_type;
9210 unsigned int r_indx;
9211 enum ppc_stub_type stub_type;
9212 struct ppc_stub_hash_entry *stub_entry;
9213 asection *sym_sec, *code_sec;
9215 bfd_vma destination;
9216 bfd_boolean ok_dest;
9217 struct ppc_link_hash_entry *hash;
9218 struct ppc_link_hash_entry *fdh;
9219 struct elf_link_hash_entry *h;
9220 Elf_Internal_Sym *sym;
9222 const asection *id_sec;
9225 r_type = ELF64_R_TYPE (irela->r_info);
9226 r_indx = ELF64_R_SYM (irela->r_info);
9228 if (r_type >= R_PPC64_max)
9230 bfd_set_error (bfd_error_bad_value);
9231 goto error_ret_free_internal;
9234 /* Only look for stubs on branch instructions. */
9235 if (r_type != R_PPC64_REL24
9236 && r_type != R_PPC64_REL14
9237 && r_type != R_PPC64_REL14_BRTAKEN
9238 && r_type != R_PPC64_REL14_BRNTAKEN)
9241 /* Now determine the call target, its name, value,
9243 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9245 goto error_ret_free_internal;
9246 hash = (struct ppc_link_hash_entry *) h;
9253 sym_value = sym->st_value;
9256 else if (hash->elf.root.type == bfd_link_hash_defined
9257 || hash->elf.root.type == bfd_link_hash_defweak)
9259 sym_value = hash->elf.root.u.def.value;
9260 if (sym_sec->output_section != NULL)
9263 else if (hash->elf.root.type == bfd_link_hash_undefweak
9264 || hash->elf.root.type == bfd_link_hash_undefined)
9266 /* Recognise an old ABI func code entry sym, and
9267 use the func descriptor sym instead if it is
9269 if (hash->elf.root.root.string[0] == '.'
9270 && (fdh = get_fdh (hash, htab)) != NULL)
9272 if (fdh->elf.root.type == bfd_link_hash_defined
9273 || fdh->elf.root.type == bfd_link_hash_defweak)
9275 sym_sec = fdh->elf.root.u.def.section;
9276 sym_value = fdh->elf.root.u.def.value;
9277 if (sym_sec->output_section != NULL)
9286 bfd_set_error (bfd_error_bad_value);
9287 goto error_ret_free_internal;
9293 sym_value += irela->r_addend;
9294 destination = (sym_value
9295 + sym_sec->output_offset
9296 + sym_sec->output_section->vma);
9300 opd_adjust = get_opd_info (sym_sec);
9301 if (opd_adjust != NULL)
9307 long adjust = opd_adjust[sym_value / 8];
9310 sym_value += adjust;
9312 dest = opd_entry_value (sym_sec, sym_value,
9313 &code_sec, &sym_value);
9314 if (dest != (bfd_vma) -1)
9319 /* Fixup old ABI sym to point at code
9321 hash->elf.root.type = bfd_link_hash_defweak;
9322 hash->elf.root.u.def.section = code_sec;
9323 hash->elf.root.u.def.value = sym_value;
9328 /* Determine what (if any) linker stub is needed. */
9329 stub_type = ppc_type_of_stub (section, irela, &hash,
9332 if (stub_type != ppc_stub_plt_call)
9334 /* Check whether we need a TOC adjusting stub.
9335 Since the linker pastes together pieces from
9336 different object files when creating the
9337 _init and _fini functions, it may be that a
9338 call to what looks like a local sym is in
9339 fact a call needing a TOC adjustment. */
9340 if (code_sec != NULL
9341 && code_sec->output_section != NULL
9342 && (htab->stub_group[code_sec->id].toc_off
9343 != htab->stub_group[section->id].toc_off)
9344 && (code_sec->has_toc_reloc
9345 || code_sec->makes_toc_func_call))
9346 stub_type = ppc_stub_long_branch_r2off;
9349 if (stub_type == ppc_stub_none)
9352 /* __tls_get_addr calls might be eliminated. */
9353 if (stub_type != ppc_stub_plt_call
9355 && (hash == htab->tls_get_addr
9356 || hash == htab->tls_get_addr_fd)
9357 && section->has_tls_reloc
9358 && irela != internal_relocs)
9363 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
9364 irela - 1, input_bfd))
9365 goto error_ret_free_internal;
9370 /* Support for grouping stub sections. */
9371 id_sec = htab->stub_group[section->id].link_sec;
9373 /* Get the name of this stub. */
9374 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9376 goto error_ret_free_internal;
9378 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
9379 stub_name, FALSE, FALSE);
9380 if (stub_entry != NULL)
9382 /* The proper stub has already been created. */
9387 stub_entry = ppc_add_stub (stub_name, section, htab);
9388 if (stub_entry == NULL)
9391 error_ret_free_internal:
9392 if (elf_section_data (section)->relocs == NULL)
9393 free (internal_relocs);
9394 error_ret_free_local:
9395 if (local_syms != NULL
9396 && (symtab_hdr->contents
9397 != (unsigned char *) local_syms))
9402 stub_entry->stub_type = stub_type;
9403 stub_entry->target_value = sym_value;
9404 stub_entry->target_section = code_sec;
9405 stub_entry->h = hash;
9406 stub_entry->addend = irela->r_addend;
9408 if (stub_entry->h != NULL)
9409 htab->stub_globals += 1;
9412 /* We're done with the internal relocs, free them. */
9413 if (elf_section_data (section)->relocs != internal_relocs)
9414 free (internal_relocs);
9417 if (local_syms != NULL
9418 && symtab_hdr->contents != (unsigned char *) local_syms)
9420 if (!info->keep_memory)
9423 symtab_hdr->contents = (unsigned char *) local_syms;
9427 /* We may have added some stubs. Find out the new size of the
9429 for (stub_sec = htab->stub_bfd->sections;
9431 stub_sec = stub_sec->next)
9432 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9434 stub_sec->rawsize = stub_sec->size;
9436 stub_sec->reloc_count = 0;
9437 stub_sec->flags &= ~SEC_RELOC;
9440 htab->brlt->size = 0;
9441 htab->brlt->reloc_count = 0;
9442 htab->brlt->flags &= ~SEC_RELOC;
9443 if (htab->relbrlt != NULL)
9444 htab->relbrlt->size = 0;
9446 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
9448 for (stub_sec = htab->stub_bfd->sections;
9450 stub_sec = stub_sec->next)
9451 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9452 && stub_sec->rawsize != stub_sec->size)
9455 /* Exit from this loop when no stubs have been added, and no stubs
9456 have changed size. */
9457 if (stub_sec == NULL)
9460 /* Ask the linker to do its stuff. */
9461 (*htab->layout_sections_again) ();
9464 /* It would be nice to strip htab->brlt from the output if the
9465 section is empty, but it's too late. If we strip sections here,
9466 the dynamic symbol table is corrupted since the section symbol
9467 for the stripped section isn't written. */
9472 /* Called after we have determined section placement. If sections
9473 move, we'll be called again. Provide a value for TOCstart. */
9476 ppc64_elf_toc (bfd *obfd)
9481 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9482 order. The TOC starts where the first of these sections starts. */
9483 s = bfd_get_section_by_name (obfd, ".got");
9485 s = bfd_get_section_by_name (obfd, ".toc");
9487 s = bfd_get_section_by_name (obfd, ".tocbss");
9489 s = bfd_get_section_by_name (obfd, ".plt");
9492 /* This may happen for
9493 o references to TOC base (SYM@toc / TOC[tc0]) without a
9496 o --gc-sections and empty TOC sections
9498 FIXME: Warn user? */
9500 /* Look for a likely section. We probably won't even be
9502 for (s = obfd->sections; s != NULL; s = s->next)
9503 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9504 == (SEC_ALLOC | SEC_SMALL_DATA))
9507 for (s = obfd->sections; s != NULL; s = s->next)
9508 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9509 == (SEC_ALLOC | SEC_SMALL_DATA))
9512 for (s = obfd->sections; s != NULL; s = s->next)
9513 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9516 for (s = obfd->sections; s != NULL; s = s->next)
9517 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9523 TOCstart = s->output_section->vma + s->output_offset;
9528 /* Build all the stubs associated with the current output file.
9529 The stubs are kept in a hash table attached to the main linker
9530 hash table. This function is called via gldelf64ppc_finish. */
9533 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9534 struct bfd_link_info *info,
9537 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9540 int stub_sec_count = 0;
9542 htab->emit_stub_syms = emit_stub_syms;
9544 /* Allocate memory to hold the linker stubs. */
9545 for (stub_sec = htab->stub_bfd->sections;
9547 stub_sec = stub_sec->next)
9548 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9549 && stub_sec->size != 0)
9551 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9552 if (stub_sec->contents == NULL)
9554 /* We want to check that built size is the same as calculated
9555 size. rawsize is a convenient location to use. */
9556 stub_sec->rawsize = stub_sec->size;
9560 if (htab->glink != NULL && htab->glink->size != 0)
9565 /* Build the .glink plt call stub. */
9566 if (htab->emit_stub_syms)
9568 struct elf_link_hash_entry *h;
9569 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9572 if (h->root.type == bfd_link_hash_new)
9574 h->root.type = bfd_link_hash_defined;
9575 h->root.u.def.section = htab->glink;
9576 h->root.u.def.value = 8;
9579 h->ref_regular_nonweak = 1;
9580 h->forced_local = 1;
9584 p = htab->glink->contents;
9585 plt0 = (htab->plt->output_section->vma
9586 + htab->plt->output_offset
9587 - (htab->glink->output_section->vma
9588 + htab->glink->output_offset
9590 bfd_put_64 (htab->glink->owner, plt0, p);
9592 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
9594 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
9596 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
9598 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
9600 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
9602 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
9604 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
9606 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9608 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9610 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9612 bfd_put_32 (htab->glink->owner, BCTR, p);
9614 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9616 bfd_put_32 (htab->glink->owner, NOP, p);
9620 /* Build the .glink lazy link call stubs. */
9622 while (p < htab->glink->contents + htab->glink->size)
9626 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9631 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9633 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9636 bfd_put_32 (htab->glink->owner,
9637 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
9641 htab->glink->rawsize = p - htab->glink->contents;
9644 if (htab->brlt->size != 0)
9646 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9648 if (htab->brlt->contents == NULL)
9651 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9653 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9654 htab->relbrlt->size);
9655 if (htab->relbrlt->contents == NULL)
9659 /* Build the stubs as directed by the stub hash table. */
9660 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9662 if (htab->relbrlt != NULL)
9663 htab->relbrlt->reloc_count = 0;
9665 for (stub_sec = htab->stub_bfd->sections;
9667 stub_sec = stub_sec->next)
9668 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9670 stub_sec_count += 1;
9671 if (stub_sec->rawsize != stub_sec->size)
9675 if (stub_sec != NULL
9676 || htab->glink->rawsize != htab->glink->size)
9678 htab->stub_error = TRUE;
9679 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9682 if (htab->stub_error)
9687 *stats = bfd_malloc (500);
9691 sprintf (*stats, _("linker stubs in %u group%s\n"
9694 " long branch %lu\n"
9695 " long toc adj %lu\n"
9698 stub_sec_count == 1 ? "" : "s",
9699 htab->stub_count[ppc_stub_long_branch - 1],
9700 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9701 htab->stub_count[ppc_stub_plt_branch - 1],
9702 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9703 htab->stub_count[ppc_stub_plt_call - 1]);
9708 /* This function undoes the changes made by add_symbol_adjust. */
9711 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9713 struct ppc_link_hash_entry *eh;
9715 if (h->root.type == bfd_link_hash_indirect)
9718 if (h->root.type == bfd_link_hash_warning)
9719 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9721 eh = (struct ppc_link_hash_entry *) h;
9722 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9725 eh->elf.root.type = bfd_link_hash_undefined;
9730 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9732 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9733 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9736 /* What to do when ld finds relocations against symbols defined in
9737 discarded sections. */
9740 ppc64_elf_action_discarded (asection *sec)
9742 if (strcmp (".opd", sec->name) == 0)
9745 if (strcmp (".toc", sec->name) == 0)
9748 if (strcmp (".toc1", sec->name) == 0)
9751 if (sec->flags & SEC_RELOC)
9754 return _bfd_elf_default_action_discarded (sec);
9757 /* The RELOCATE_SECTION function is called by the ELF backend linker
9758 to handle the relocations for a section.
9760 The relocs are always passed as Rela structures; if the section
9761 actually uses Rel structures, the r_addend field will always be
9764 This function is responsible for adjust the section contents as
9765 necessary, and (if using Rela relocs and generating a
9766 relocatable output file) adjusting the reloc addend as
9769 This function does not have to worry about setting the reloc
9770 address or the reloc symbol index.
9772 LOCAL_SYMS is a pointer to the swapped in local symbols.
9774 LOCAL_SECTIONS is an array giving the section in the input file
9775 corresponding to the st_shndx field of each local symbol.
9777 The global hash table entry for the global symbols can be found
9778 via elf_sym_hashes (input_bfd).
9780 When generating relocatable output, this function must handle
9781 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9782 going to be the section symbol corresponding to the output
9783 section, which means that the addend must be adjusted
9787 ppc64_elf_relocate_section (bfd *output_bfd,
9788 struct bfd_link_info *info,
9790 asection *input_section,
9792 Elf_Internal_Rela *relocs,
9793 Elf_Internal_Sym *local_syms,
9794 asection **local_sections)
9796 struct ppc_link_hash_table *htab;
9797 Elf_Internal_Shdr *symtab_hdr;
9798 struct elf_link_hash_entry **sym_hashes;
9799 Elf_Internal_Rela *rel;
9800 Elf_Internal_Rela *relend;
9801 Elf_Internal_Rela outrel;
9803 struct got_entry **local_got_ents;
9805 bfd_boolean ret = TRUE;
9807 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9808 bfd_boolean is_power4 = FALSE;
9809 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
9811 /* Initialize howto table if needed. */
9812 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9815 htab = ppc_hash_table (info);
9817 /* Don't relocate stub sections. */
9818 if (input_section->owner == htab->stub_bfd)
9821 local_got_ents = elf_local_got_ents (input_bfd);
9822 TOCstart = elf_gp (output_bfd);
9823 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9824 sym_hashes = elf_sym_hashes (input_bfd);
9825 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
9828 relend = relocs + input_section->reloc_count;
9829 for (; rel < relend; rel++)
9831 enum elf_ppc64_reloc_type r_type;
9832 bfd_vma addend, orig_addend;
9833 bfd_reloc_status_type r;
9834 Elf_Internal_Sym *sym;
9836 struct elf_link_hash_entry *h_elf;
9837 struct ppc_link_hash_entry *h;
9838 struct ppc_link_hash_entry *fdh;
9839 const char *sym_name;
9840 unsigned long r_symndx, toc_symndx;
9841 char tls_mask, tls_gd, tls_type;
9844 bfd_boolean unresolved_reloc;
9846 unsigned long insn, mask;
9847 struct ppc_stub_hash_entry *stub_entry;
9848 bfd_vma max_br_offset;
9851 r_type = ELF64_R_TYPE (rel->r_info);
9852 r_symndx = ELF64_R_SYM (rel->r_info);
9854 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9855 symbol of the previous ADDR64 reloc. The symbol gives us the
9856 proper TOC base to use. */
9857 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9859 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9861 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9867 unresolved_reloc = FALSE;
9869 orig_addend = rel->r_addend;
9871 if (r_symndx < symtab_hdr->sh_info)
9873 /* It's a local symbol. */
9876 sym = local_syms + r_symndx;
9877 sec = local_sections[r_symndx];
9878 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
9879 sym_type = ELF64_ST_TYPE (sym->st_info);
9880 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9881 opd_adjust = get_opd_info (sec);
9882 if (opd_adjust != NULL)
9884 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9889 /* If this is a relocation against the opd section sym
9890 and we have edited .opd, adjust the reloc addend so
9891 that ld -r and ld --emit-relocs output is correct.
9892 If it is a reloc against some other .opd symbol,
9893 then the symbol value will be adjusted later. */
9894 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9895 rel->r_addend += adjust;
9897 relocation += adjust;
9903 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9904 r_symndx, symtab_hdr, sym_hashes,
9905 h_elf, sec, relocation,
9906 unresolved_reloc, warned);
9907 sym_name = h_elf->root.root.string;
9908 sym_type = h_elf->type;
9910 h = (struct ppc_link_hash_entry *) h_elf;
9912 if (sec != NULL && elf_discarded_section (sec))
9914 /* For relocs against symbols from removed linkonce sections,
9915 or sections discarded by a linker script, we just want the
9916 section contents zeroed. Avoid any special processing. */
9917 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
9918 contents + rel->r_offset);
9924 if (info->relocatable)
9927 /* TLS optimizations. Replace instruction sequences and relocs
9928 based on information we collected in tls_optimize. We edit
9929 RELOCS so that --emit-relocs will output something sensible
9930 for the final instruction stream. */
9934 if (IS_PPC64_TLS_RELOC (r_type))
9937 tls_mask = h->tls_mask;
9938 else if (local_got_ents != NULL)
9941 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9942 tls_mask = lgot_masks[r_symndx];
9944 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9946 /* Check for toc tls entries. */
9949 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9954 tls_mask = *toc_tls;
9958 /* Check that tls relocs are used with tls syms, and non-tls
9959 relocs are used with non-tls syms. */
9961 && r_type != R_PPC64_NONE
9963 || h->elf.root.type == bfd_link_hash_defined
9964 || h->elf.root.type == bfd_link_hash_defweak)
9965 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9967 if (r_type == R_PPC64_TLS && tls_mask != 0)
9968 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9971 (*_bfd_error_handler)
9972 (sym_type == STT_TLS
9973 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9974 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9977 (long) rel->r_offset,
9978 ppc64_elf_howto_table[r_type]->name,
9982 /* Ensure reloc mapping code below stays sane. */
9983 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9984 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9985 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9986 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9987 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9988 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9989 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9990 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9991 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9992 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10000 case R_PPC64_TOC16:
10001 case R_PPC64_TOC16_LO:
10002 case R_PPC64_TOC16_DS:
10003 case R_PPC64_TOC16_LO_DS:
10005 /* Check for toc tls entries. */
10009 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10016 tls_mask = *toc_tls;
10017 if (r_type == R_PPC64_TOC16_DS
10018 || r_type == R_PPC64_TOC16_LO_DS)
10021 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10026 /* If we found a GD reloc pair, then we might be
10027 doing a GD->IE transition. */
10030 tls_gd = TLS_TPRELGD;
10031 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10032 goto tls_get_addr_check;
10034 else if (retval == 3)
10036 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10037 goto tls_get_addr_check;
10044 case R_PPC64_GOT_TPREL16_DS:
10045 case R_PPC64_GOT_TPREL16_LO_DS:
10047 && (tls_mask & TLS_TPREL) == 0)
10050 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
10052 insn |= 0x3c0d0000; /* addis 0,13,0 */
10053 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
10054 r_type = R_PPC64_TPREL16_HA;
10055 if (toc_symndx != 0)
10057 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10058 /* We changed the symbol. Start over in order to
10059 get h, sym, sec etc. right. */
10064 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10070 && (tls_mask & TLS_TPREL) == 0)
10073 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
10074 if ((insn & ((0x3f << 26) | (31 << 11)))
10075 == ((31 << 26) | (13 << 11)))
10076 rtra = insn & ((1 << 26) - (1 << 16));
10077 else if ((insn & ((0x3f << 26) | (31 << 16)))
10078 == ((31 << 26) | (13 << 16)))
10079 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10082 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10085 else if ((insn & (31 << 1)) == 23 << 1
10086 && ((insn & (31 << 6)) < 14 << 6
10087 || ((insn & (31 << 6)) >= 16 << 6
10088 && (insn & (31 << 6)) < 24 << 6)))
10089 /* load and store indexed -> dform. */
10090 insn = (32 | ((insn >> 6) & 31)) << 26;
10091 else if ((insn & (31 << 1)) == 21 << 1
10092 && (insn & (0x1a << 6)) == 0)
10093 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10094 insn = (((58 | ((insn >> 6) & 4)) << 26)
10095 | ((insn >> 6) & 1));
10096 else if ((insn & (31 << 1)) == 21 << 1
10097 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10099 insn = (58 << 26) | 2;
10103 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10104 /* Was PPC64_TLS which sits on insn boundary, now
10105 PPC64_TPREL16_LO which is at low-order half-word. */
10106 rel->r_offset += d_offset;
10107 r_type = R_PPC64_TPREL16_LO;
10108 if (toc_symndx != 0)
10110 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10111 /* We changed the symbol. Start over in order to
10112 get h, sym, sec etc. right. */
10117 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10121 case R_PPC64_GOT_TLSGD16_HI:
10122 case R_PPC64_GOT_TLSGD16_HA:
10123 tls_gd = TLS_TPRELGD;
10124 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10128 case R_PPC64_GOT_TLSLD16_HI:
10129 case R_PPC64_GOT_TLSLD16_HA:
10130 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10133 if ((tls_mask & tls_gd) != 0)
10134 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10135 + R_PPC64_GOT_TPREL16_DS);
10138 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10139 rel->r_offset -= d_offset;
10140 r_type = R_PPC64_NONE;
10142 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10146 case R_PPC64_GOT_TLSGD16:
10147 case R_PPC64_GOT_TLSGD16_LO:
10148 tls_gd = TLS_TPRELGD;
10149 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10150 goto tls_get_addr_check;
10153 case R_PPC64_GOT_TLSLD16:
10154 case R_PPC64_GOT_TLSLD16_LO:
10155 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10157 tls_get_addr_check:
10158 if (rel + 1 < relend)
10160 enum elf_ppc64_reloc_type r_type2;
10161 unsigned long r_symndx2;
10162 struct elf_link_hash_entry *h2;
10163 bfd_vma insn1, insn2, insn3;
10166 /* The next instruction should be a call to
10167 __tls_get_addr. Peek at the reloc to be sure. */
10168 r_type2 = ELF64_R_TYPE (rel[1].r_info);
10169 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10170 if (r_symndx2 < symtab_hdr->sh_info
10171 || (r_type2 != R_PPC64_REL14
10172 && r_type2 != R_PPC64_REL14_BRTAKEN
10173 && r_type2 != R_PPC64_REL14_BRNTAKEN
10174 && r_type2 != R_PPC64_REL24))
10177 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10178 while (h2->root.type == bfd_link_hash_indirect
10179 || h2->root.type == bfd_link_hash_warning)
10180 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
10181 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10182 && h2 != &htab->tls_get_addr_fd->elf))
10185 /* OK, it checks out. Replace the call. */
10186 offset = rel[1].r_offset;
10187 insn1 = bfd_get_32 (output_bfd,
10188 contents + rel->r_offset - d_offset);
10189 insn3 = bfd_get_32 (output_bfd,
10190 contents + offset + 4);
10191 if ((tls_mask & tls_gd) != 0)
10194 insn1 &= (1 << 26) - (1 << 2);
10195 insn1 |= 58 << 26; /* ld */
10196 insn2 = 0x7c636a14; /* add 3,3,13 */
10197 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10198 if ((tls_mask & TLS_EXPLICIT) == 0)
10199 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10200 + R_PPC64_GOT_TPREL16_DS);
10202 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10203 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10208 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10209 insn2 = 0x38630000; /* addi 3,3,0 */
10212 /* Was an LD reloc. */
10214 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10215 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10217 else if (toc_symndx != 0)
10218 r_symndx = toc_symndx;
10219 r_type = R_PPC64_TPREL16_HA;
10220 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10221 rel[1].r_info = ELF64_R_INFO (r_symndx,
10222 R_PPC64_TPREL16_LO);
10223 rel[1].r_offset += d_offset;
10226 || insn3 == CROR_151515 || insn3 == CROR_313131)
10230 rel[1].r_offset += 4;
10232 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
10233 bfd_put_32 (output_bfd, insn2, contents + offset);
10234 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10235 if (tls_gd == 0 || toc_symndx != 0)
10237 /* We changed the symbol. Start over in order
10238 to get h, sym, sec etc. right. */
10246 case R_PPC64_DTPMOD64:
10247 if (rel + 1 < relend
10248 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10249 && rel[1].r_offset == rel->r_offset + 8)
10251 if ((tls_mask & TLS_GD) == 0)
10253 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10254 if ((tls_mask & TLS_TPRELGD) != 0)
10255 r_type = R_PPC64_TPREL64;
10258 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
10259 r_type = R_PPC64_NONE;
10261 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10266 if ((tls_mask & TLS_LD) == 0)
10268 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
10269 r_type = R_PPC64_NONE;
10270 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10275 case R_PPC64_TPREL64:
10276 if ((tls_mask & TLS_TPREL) == 0)
10278 r_type = R_PPC64_NONE;
10279 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10284 /* Handle other relocations that tweak non-addend part of insn. */
10286 max_br_offset = 1 << 25;
10287 addend = rel->r_addend;
10293 /* Branch taken prediction relocations. */
10294 case R_PPC64_ADDR14_BRTAKEN:
10295 case R_PPC64_REL14_BRTAKEN:
10296 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10299 /* Branch not taken prediction relocations. */
10300 case R_PPC64_ADDR14_BRNTAKEN:
10301 case R_PPC64_REL14_BRNTAKEN:
10302 insn |= bfd_get_32 (output_bfd,
10303 contents + rel->r_offset) & ~(0x01 << 21);
10306 case R_PPC64_REL14:
10307 max_br_offset = 1 << 15;
10310 case R_PPC64_REL24:
10311 /* Calls to functions with a different TOC, such as calls to
10312 shared objects, need to alter the TOC pointer. This is
10313 done using a linkage stub. A REL24 branching to these
10314 linkage stubs needs to be followed by a nop, as the nop
10315 will be replaced with an instruction to restore the TOC
10320 && (((fdh = h->oh) != NULL
10321 && fdh->elf.plt.plist != NULL)
10322 || (fdh = h)->elf.plt.plist != NULL))
10324 && sec->output_section != NULL
10325 && sec->id <= htab->top_id
10326 && (htab->stub_group[sec->id].toc_off
10327 != htab->stub_group[input_section->id].toc_off)))
10328 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
10329 rel, htab)) != NULL
10330 && (stub_entry->stub_type == ppc_stub_plt_call
10331 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10332 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
10334 bfd_boolean can_plt_call = FALSE;
10336 if (rel->r_offset + 8 <= input_section->size)
10339 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10341 || nop == CROR_151515 || nop == CROR_313131)
10343 bfd_put_32 (input_bfd, LD_R2_40R1,
10344 contents + rel->r_offset + 4);
10345 can_plt_call = TRUE;
10351 if (stub_entry->stub_type == ppc_stub_plt_call)
10353 /* If this is a plain branch rather than a branch
10354 and link, don't require a nop. However, don't
10355 allow tail calls in a shared library as they
10356 will result in r2 being corrupted. */
10358 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10359 if (info->executable && (br & 1) == 0)
10360 can_plt_call = TRUE;
10365 && strcmp (h->elf.root.root.string,
10366 ".__libc_start_main") == 0)
10368 /* Allow crt1 branch to go via a toc adjusting stub. */
10369 can_plt_call = TRUE;
10373 if (strcmp (input_section->output_section->name,
10375 || strcmp (input_section->output_section->name,
10377 (*_bfd_error_handler)
10378 (_("%B(%A+0x%lx): automatic multiple TOCs "
10379 "not supported using your crt files; "
10380 "recompile with -mminimal-toc or upgrade gcc"),
10383 (long) rel->r_offset);
10385 (*_bfd_error_handler)
10386 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10387 "does not allow automatic multiple TOCs; "
10388 "recompile with -mminimal-toc or "
10389 "-fno-optimize-sibling-calls, "
10390 "or make `%s' extern"),
10393 (long) rel->r_offset,
10396 bfd_set_error (bfd_error_bad_value);
10402 && stub_entry->stub_type == ppc_stub_plt_call)
10403 unresolved_reloc = FALSE;
10406 if (stub_entry == NULL
10407 && get_opd_info (sec) != NULL)
10409 /* The branch destination is the value of the opd entry. */
10410 bfd_vma off = (relocation + addend
10411 - sec->output_section->vma
10412 - sec->output_offset);
10413 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10414 if (dest != (bfd_vma) -1)
10421 /* If the branch is out of reach we ought to have a long
10423 from = (rel->r_offset
10424 + input_section->output_offset
10425 + input_section->output_section->vma);
10427 if (stub_entry == NULL
10428 && (relocation + addend - from + max_br_offset
10429 >= 2 * max_br_offset)
10430 && r_type != R_PPC64_ADDR14_BRTAKEN
10431 && r_type != R_PPC64_ADDR14_BRNTAKEN)
10432 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10435 if (stub_entry != NULL)
10437 /* Munge up the value and addend so that we call the stub
10438 rather than the procedure directly. */
10439 relocation = (stub_entry->stub_offset
10440 + stub_entry->stub_sec->output_offset
10441 + stub_entry->stub_sec->output_section->vma);
10449 /* Set 'a' bit. This is 0b00010 in BO field for branch
10450 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10451 for branch on CTR insns (BO == 1a00t or 1a01t). */
10452 if ((insn & (0x14 << 21)) == (0x04 << 21))
10453 insn |= 0x02 << 21;
10454 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10455 insn |= 0x08 << 21;
10461 /* Invert 'y' bit if not the default. */
10462 if ((bfd_signed_vma) (relocation + addend - from) < 0)
10463 insn ^= 0x01 << 21;
10466 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10469 /* NOP out calls to undefined weak functions.
10470 We can thus call a weak function without first
10471 checking whether the function is defined. */
10473 && h->elf.root.type == bfd_link_hash_undefweak
10474 && r_type == R_PPC64_REL24
10478 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10484 /* Set `addend'. */
10489 (*_bfd_error_handler)
10490 (_("%B: unknown relocation type %d for symbol %s"),
10491 input_bfd, (int) r_type, sym_name);
10493 bfd_set_error (bfd_error_bad_value);
10499 case R_PPC64_GNU_VTINHERIT:
10500 case R_PPC64_GNU_VTENTRY:
10503 /* GOT16 relocations. Like an ADDR16 using the symbol's
10504 address in the GOT as relocation value instead of the
10505 symbol's value itself. Also, create a GOT entry for the
10506 symbol and put the symbol value there. */
10507 case R_PPC64_GOT_TLSGD16:
10508 case R_PPC64_GOT_TLSGD16_LO:
10509 case R_PPC64_GOT_TLSGD16_HI:
10510 case R_PPC64_GOT_TLSGD16_HA:
10511 tls_type = TLS_TLS | TLS_GD;
10514 case R_PPC64_GOT_TLSLD16:
10515 case R_PPC64_GOT_TLSLD16_LO:
10516 case R_PPC64_GOT_TLSLD16_HI:
10517 case R_PPC64_GOT_TLSLD16_HA:
10518 tls_type = TLS_TLS | TLS_LD;
10521 case R_PPC64_GOT_TPREL16_DS:
10522 case R_PPC64_GOT_TPREL16_LO_DS:
10523 case R_PPC64_GOT_TPREL16_HI:
10524 case R_PPC64_GOT_TPREL16_HA:
10525 tls_type = TLS_TLS | TLS_TPREL;
10528 case R_PPC64_GOT_DTPREL16_DS:
10529 case R_PPC64_GOT_DTPREL16_LO_DS:
10530 case R_PPC64_GOT_DTPREL16_HI:
10531 case R_PPC64_GOT_DTPREL16_HA:
10532 tls_type = TLS_TLS | TLS_DTPREL;
10535 case R_PPC64_GOT16:
10536 case R_PPC64_GOT16_LO:
10537 case R_PPC64_GOT16_HI:
10538 case R_PPC64_GOT16_HA:
10539 case R_PPC64_GOT16_DS:
10540 case R_PPC64_GOT16_LO_DS:
10543 /* Relocation is to the entry for this symbol in the global
10548 unsigned long indx = 0;
10550 if (tls_type == (TLS_TLS | TLS_LD)
10552 || !h->elf.def_dynamic))
10553 offp = &ppc64_tlsld_got (input_bfd)->offset;
10556 struct got_entry *ent;
10560 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10561 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10564 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10565 /* This is actually a static link, or it is a
10566 -Bsymbolic link and the symbol is defined
10567 locally, or the symbol was forced to be local
10568 because of a version file. */
10572 indx = h->elf.dynindx;
10573 unresolved_reloc = FALSE;
10575 ent = h->elf.got.glist;
10579 if (local_got_ents == NULL)
10581 ent = local_got_ents[r_symndx];
10584 for (; ent != NULL; ent = ent->next)
10585 if (ent->addend == orig_addend
10586 && ent->owner == input_bfd
10587 && ent->tls_type == tls_type)
10591 offp = &ent->got.offset;
10594 got = ppc64_elf_tdata (input_bfd)->got;
10598 /* The offset must always be a multiple of 8. We use the
10599 least significant bit to record whether we have already
10600 processed this entry. */
10602 if ((off & 1) != 0)
10606 /* Generate relocs for the dynamic linker, except in
10607 the case of TLSLD where we'll use one entry per
10609 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10612 if ((info->shared || indx != 0)
10614 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10615 || h->elf.root.type != bfd_link_hash_undefweak))
10617 outrel.r_offset = (got->output_section->vma
10618 + got->output_offset
10620 outrel.r_addend = addend;
10621 if (tls_type & (TLS_LD | TLS_GD))
10623 outrel.r_addend = 0;
10624 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10625 if (tls_type == (TLS_TLS | TLS_GD))
10627 loc = relgot->contents;
10628 loc += (relgot->reloc_count++
10629 * sizeof (Elf64_External_Rela));
10630 bfd_elf64_swap_reloca_out (output_bfd,
10632 outrel.r_offset += 8;
10633 outrel.r_addend = addend;
10635 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10638 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10639 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10640 else if (tls_type == (TLS_TLS | TLS_TPREL))
10641 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10642 else if (indx == 0)
10644 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10646 /* Write the .got section contents for the sake
10648 loc = got->contents + off;
10649 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10653 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10655 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10657 outrel.r_addend += relocation;
10658 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10659 outrel.r_addend -= htab->elf.tls_sec->vma;
10661 loc = relgot->contents;
10662 loc += (relgot->reloc_count++
10663 * sizeof (Elf64_External_Rela));
10664 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10667 /* Init the .got section contents here if we're not
10668 emitting a reloc. */
10671 relocation += addend;
10672 if (tls_type == (TLS_TLS | TLS_LD))
10674 else if (tls_type != 0)
10676 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10677 if (tls_type == (TLS_TLS | TLS_TPREL))
10678 relocation += DTP_OFFSET - TP_OFFSET;
10680 if (tls_type == (TLS_TLS | TLS_GD))
10682 bfd_put_64 (output_bfd, relocation,
10683 got->contents + off + 8);
10688 bfd_put_64 (output_bfd, relocation,
10689 got->contents + off);
10693 if (off >= (bfd_vma) -2)
10696 relocation = got->output_offset + off;
10698 /* TOC base (r2) is TOC start plus 0x8000. */
10699 addend = -TOC_BASE_OFF;
10703 case R_PPC64_PLT16_HA:
10704 case R_PPC64_PLT16_HI:
10705 case R_PPC64_PLT16_LO:
10706 case R_PPC64_PLT32:
10707 case R_PPC64_PLT64:
10708 /* Relocation is to the entry for this symbol in the
10709 procedure linkage table. */
10711 /* Resolve a PLT reloc against a local symbol directly,
10712 without using the procedure linkage table. */
10716 /* It's possible that we didn't make a PLT entry for this
10717 symbol. This happens when statically linking PIC code,
10718 or when using -Bsymbolic. Go find a match if there is a
10720 if (htab->plt != NULL)
10722 struct plt_entry *ent;
10723 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10724 if (ent->addend == orig_addend
10725 && ent->plt.offset != (bfd_vma) -1)
10727 relocation = (htab->plt->output_section->vma
10728 + htab->plt->output_offset
10729 + ent->plt.offset);
10730 unresolved_reloc = FALSE;
10736 /* Relocation value is TOC base. */
10737 relocation = TOCstart;
10739 relocation += htab->stub_group[input_section->id].toc_off;
10740 else if (unresolved_reloc)
10742 else if (sec != NULL && sec->id <= htab->top_id)
10743 relocation += htab->stub_group[sec->id].toc_off;
10745 unresolved_reloc = TRUE;
10748 /* TOC16 relocs. We want the offset relative to the TOC base,
10749 which is the address of the start of the TOC plus 0x8000.
10750 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10752 case R_PPC64_TOC16:
10753 case R_PPC64_TOC16_LO:
10754 case R_PPC64_TOC16_HI:
10755 case R_PPC64_TOC16_DS:
10756 case R_PPC64_TOC16_LO_DS:
10757 case R_PPC64_TOC16_HA:
10758 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10761 /* Relocate against the beginning of the section. */
10762 case R_PPC64_SECTOFF:
10763 case R_PPC64_SECTOFF_LO:
10764 case R_PPC64_SECTOFF_HI:
10765 case R_PPC64_SECTOFF_DS:
10766 case R_PPC64_SECTOFF_LO_DS:
10767 case R_PPC64_SECTOFF_HA:
10769 addend -= sec->output_section->vma;
10772 case R_PPC64_REL14:
10773 case R_PPC64_REL14_BRNTAKEN:
10774 case R_PPC64_REL14_BRTAKEN:
10775 case R_PPC64_REL24:
10778 case R_PPC64_TPREL16:
10779 case R_PPC64_TPREL16_LO:
10780 case R_PPC64_TPREL16_HI:
10781 case R_PPC64_TPREL16_HA:
10782 case R_PPC64_TPREL16_DS:
10783 case R_PPC64_TPREL16_LO_DS:
10784 case R_PPC64_TPREL16_HIGHER:
10785 case R_PPC64_TPREL16_HIGHERA:
10786 case R_PPC64_TPREL16_HIGHEST:
10787 case R_PPC64_TPREL16_HIGHESTA:
10788 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10790 /* The TPREL16 relocs shouldn't really be used in shared
10791 libs as they will result in DT_TEXTREL being set, but
10792 support them anyway. */
10796 case R_PPC64_DTPREL16:
10797 case R_PPC64_DTPREL16_LO:
10798 case R_PPC64_DTPREL16_HI:
10799 case R_PPC64_DTPREL16_HA:
10800 case R_PPC64_DTPREL16_DS:
10801 case R_PPC64_DTPREL16_LO_DS:
10802 case R_PPC64_DTPREL16_HIGHER:
10803 case R_PPC64_DTPREL16_HIGHERA:
10804 case R_PPC64_DTPREL16_HIGHEST:
10805 case R_PPC64_DTPREL16_HIGHESTA:
10806 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10809 case R_PPC64_DTPMOD64:
10814 case R_PPC64_TPREL64:
10815 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10818 case R_PPC64_DTPREL64:
10819 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10822 /* Relocations that may need to be propagated if this is a
10824 case R_PPC64_REL30:
10825 case R_PPC64_REL32:
10826 case R_PPC64_REL64:
10827 case R_PPC64_ADDR14:
10828 case R_PPC64_ADDR14_BRNTAKEN:
10829 case R_PPC64_ADDR14_BRTAKEN:
10830 case R_PPC64_ADDR16:
10831 case R_PPC64_ADDR16_DS:
10832 case R_PPC64_ADDR16_HA:
10833 case R_PPC64_ADDR16_HI:
10834 case R_PPC64_ADDR16_HIGHER:
10835 case R_PPC64_ADDR16_HIGHERA:
10836 case R_PPC64_ADDR16_HIGHEST:
10837 case R_PPC64_ADDR16_HIGHESTA:
10838 case R_PPC64_ADDR16_LO:
10839 case R_PPC64_ADDR16_LO_DS:
10840 case R_PPC64_ADDR24:
10841 case R_PPC64_ADDR32:
10842 case R_PPC64_ADDR64:
10843 case R_PPC64_UADDR16:
10844 case R_PPC64_UADDR32:
10845 case R_PPC64_UADDR64:
10847 if ((input_section->flags & SEC_ALLOC) == 0)
10850 if (NO_OPD_RELOCS && is_opd)
10855 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10856 || h->elf.root.type != bfd_link_hash_undefweak)
10857 && (MUST_BE_DYN_RELOC (r_type)
10858 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10859 || (ELIMINATE_COPY_RELOCS
10862 && h->elf.dynindx != -1
10863 && !h->elf.non_got_ref
10864 && h->elf.def_dynamic
10865 && !h->elf.def_regular))
10867 Elf_Internal_Rela outrel;
10868 bfd_boolean skip, relocate;
10873 /* When generating a dynamic object, these relocations
10874 are copied into the output file to be resolved at run
10880 out_off = _bfd_elf_section_offset (output_bfd, info,
10881 input_section, rel->r_offset);
10882 if (out_off == (bfd_vma) -1)
10884 else if (out_off == (bfd_vma) -2)
10885 skip = TRUE, relocate = TRUE;
10886 out_off += (input_section->output_section->vma
10887 + input_section->output_offset);
10888 outrel.r_offset = out_off;
10889 outrel.r_addend = rel->r_addend;
10891 /* Optimize unaligned reloc use. */
10892 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10893 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10894 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10895 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10896 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10897 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10898 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10899 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10900 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10903 memset (&outrel, 0, sizeof outrel);
10904 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10906 && r_type != R_PPC64_TOC)
10907 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10910 /* This symbol is local, or marked to become local,
10911 or this is an opd section reloc which must point
10912 at a local function. */
10913 outrel.r_addend += relocation;
10914 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10916 if (is_opd && h != NULL)
10918 /* Lie about opd entries. This case occurs
10919 when building shared libraries and we
10920 reference a function in another shared
10921 lib. The same thing happens for a weak
10922 definition in an application that's
10923 overridden by a strong definition in a
10924 shared lib. (I believe this is a generic
10925 bug in binutils handling of weak syms.)
10926 In these cases we won't use the opd
10927 entry in this lib. */
10928 unresolved_reloc = FALSE;
10930 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10932 /* We need to relocate .opd contents for ld.so.
10933 Prelink also wants simple and consistent rules
10934 for relocs. This make all RELATIVE relocs have
10935 *r_offset equal to r_addend. */
10942 if (bfd_is_abs_section (sec))
10944 else if (sec == NULL || sec->owner == NULL)
10946 bfd_set_error (bfd_error_bad_value);
10953 osec = sec->output_section;
10954 indx = elf_section_data (osec)->dynindx;
10958 if ((osec->flags & SEC_READONLY) == 0
10959 && htab->elf.data_index_section != NULL)
10960 osec = htab->elf.data_index_section;
10962 osec = htab->elf.text_index_section;
10963 indx = elf_section_data (osec)->dynindx;
10965 BFD_ASSERT (indx != 0);
10967 /* We are turning this relocation into one
10968 against a section symbol, so subtract out
10969 the output section's address but not the
10970 offset of the input section in the output
10972 outrel.r_addend -= osec->vma;
10975 outrel.r_info = ELF64_R_INFO (indx, r_type);
10979 sreloc = elf_section_data (input_section)->sreloc;
10980 if (sreloc == NULL)
10983 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
10986 loc = sreloc->contents;
10987 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10988 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10990 /* If this reloc is against an external symbol, it will
10991 be computed at runtime, so there's no need to do
10992 anything now. However, for the sake of prelink ensure
10993 that the section contents are a known value. */
10996 unresolved_reloc = FALSE;
10997 /* The value chosen here is quite arbitrary as ld.so
10998 ignores section contents except for the special
10999 case of .opd where the contents might be accessed
11000 before relocation. Choose zero, as that won't
11001 cause reloc overflow. */
11004 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11005 to improve backward compatibility with older
11007 if (r_type == R_PPC64_ADDR64)
11008 addend = outrel.r_addend;
11009 /* Adjust pc_relative relocs to have zero in *r_offset. */
11010 else if (ppc64_elf_howto_table[r_type]->pc_relative)
11011 addend = (input_section->output_section->vma
11012 + input_section->output_offset
11019 case R_PPC64_GLOB_DAT:
11020 case R_PPC64_JMP_SLOT:
11021 case R_PPC64_RELATIVE:
11022 /* We shouldn't ever see these dynamic relocs in relocatable
11024 /* Fall through. */
11026 case R_PPC64_PLTGOT16:
11027 case R_PPC64_PLTGOT16_DS:
11028 case R_PPC64_PLTGOT16_HA:
11029 case R_PPC64_PLTGOT16_HI:
11030 case R_PPC64_PLTGOT16_LO:
11031 case R_PPC64_PLTGOT16_LO_DS:
11032 case R_PPC64_PLTREL32:
11033 case R_PPC64_PLTREL64:
11034 /* These ones haven't been implemented yet. */
11036 (*_bfd_error_handler)
11037 (_("%B: relocation %s is not supported for symbol %s."),
11039 ppc64_elf_howto_table[r_type]->name, sym_name);
11041 bfd_set_error (bfd_error_invalid_operation);
11046 /* Do any further special processing. */
11052 case R_PPC64_ADDR16_HA:
11053 case R_PPC64_ADDR16_HIGHERA:
11054 case R_PPC64_ADDR16_HIGHESTA:
11055 case R_PPC64_TOC16_HA:
11056 case R_PPC64_SECTOFF_HA:
11057 case R_PPC64_TPREL16_HA:
11058 case R_PPC64_DTPREL16_HA:
11059 case R_PPC64_TPREL16_HIGHER:
11060 case R_PPC64_TPREL16_HIGHERA:
11061 case R_PPC64_TPREL16_HIGHEST:
11062 case R_PPC64_TPREL16_HIGHESTA:
11063 case R_PPC64_DTPREL16_HIGHER:
11064 case R_PPC64_DTPREL16_HIGHERA:
11065 case R_PPC64_DTPREL16_HIGHEST:
11066 case R_PPC64_DTPREL16_HIGHESTA:
11067 /* It's just possible that this symbol is a weak symbol
11068 that's not actually defined anywhere. In that case,
11069 'sec' would be NULL, and we should leave the symbol
11070 alone (it will be set to zero elsewhere in the link). */
11075 case R_PPC64_GOT16_HA:
11076 case R_PPC64_PLTGOT16_HA:
11077 case R_PPC64_PLT16_HA:
11078 case R_PPC64_GOT_TLSGD16_HA:
11079 case R_PPC64_GOT_TLSLD16_HA:
11080 case R_PPC64_GOT_TPREL16_HA:
11081 case R_PPC64_GOT_DTPREL16_HA:
11082 /* Add 0x10000 if sign bit in 0:15 is set.
11083 Bits 0:15 are not used. */
11087 case R_PPC64_ADDR16_DS:
11088 case R_PPC64_ADDR16_LO_DS:
11089 case R_PPC64_GOT16_DS:
11090 case R_PPC64_GOT16_LO_DS:
11091 case R_PPC64_PLT16_LO_DS:
11092 case R_PPC64_SECTOFF_DS:
11093 case R_PPC64_SECTOFF_LO_DS:
11094 case R_PPC64_TOC16_DS:
11095 case R_PPC64_TOC16_LO_DS:
11096 case R_PPC64_PLTGOT16_DS:
11097 case R_PPC64_PLTGOT16_LO_DS:
11098 case R_PPC64_GOT_TPREL16_DS:
11099 case R_PPC64_GOT_TPREL16_LO_DS:
11100 case R_PPC64_GOT_DTPREL16_DS:
11101 case R_PPC64_GOT_DTPREL16_LO_DS:
11102 case R_PPC64_TPREL16_DS:
11103 case R_PPC64_TPREL16_LO_DS:
11104 case R_PPC64_DTPREL16_DS:
11105 case R_PPC64_DTPREL16_LO_DS:
11106 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11108 /* If this reloc is against an lq insn, then the value must be
11109 a multiple of 16. This is somewhat of a hack, but the
11110 "correct" way to do this by defining _DQ forms of all the
11111 _DS relocs bloats all reloc switches in this file. It
11112 doesn't seem to make much sense to use any of these relocs
11113 in data, so testing the insn should be safe. */
11114 if ((insn & (0x3f << 26)) == (56u << 26))
11116 if (((relocation + addend) & mask) != 0)
11118 (*_bfd_error_handler)
11119 (_("%B: error: relocation %s not a multiple of %d"),
11121 ppc64_elf_howto_table[r_type]->name,
11123 bfd_set_error (bfd_error_bad_value);
11130 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11131 because such sections are not SEC_ALLOC and thus ld.so will
11132 not process them. */
11133 if (unresolved_reloc
11134 && !((input_section->flags & SEC_DEBUGGING) != 0
11135 && h->elf.def_dynamic))
11137 (*_bfd_error_handler)
11138 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11141 (long) rel->r_offset,
11142 ppc64_elf_howto_table[(int) r_type]->name,
11143 h->elf.root.root.string);
11147 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
11155 if (r != bfd_reloc_ok)
11157 if (sym_name == NULL)
11158 sym_name = "(null)";
11159 if (r == bfd_reloc_overflow)
11164 && h->elf.root.type == bfd_link_hash_undefweak
11165 && ppc64_elf_howto_table[r_type]->pc_relative)
11167 /* Assume this is a call protected by other code that
11168 detects the symbol is undefined. If this is the case,
11169 we can safely ignore the overflow. If not, the
11170 program is hosed anyway, and a little warning isn't
11176 if (!((*info->callbacks->reloc_overflow)
11177 (info, (h ? &h->elf.root : NULL), sym_name,
11178 ppc64_elf_howto_table[r_type]->name,
11179 orig_addend, input_bfd, input_section, rel->r_offset)))
11184 (*_bfd_error_handler)
11185 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11188 (long) rel->r_offset,
11189 ppc64_elf_howto_table[r_type]->name,
11197 /* If we're emitting relocations, then shortly after this function
11198 returns, reloc offsets and addends for this section will be
11199 adjusted. Worse, reloc symbol indices will be for the output
11200 file rather than the input. Save a copy of the relocs for
11201 opd_entry_value. */
11202 if (is_opd && (info->emitrelocations || info->relocatable))
11205 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11206 rel = bfd_alloc (input_bfd, amt);
11207 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11208 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11211 memcpy (rel, relocs, amt);
11216 /* Adjust the value of any local symbols in opd sections. */
11219 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11220 const char *name ATTRIBUTE_UNUSED,
11221 Elf_Internal_Sym *elfsym,
11222 asection *input_sec,
11223 struct elf_link_hash_entry *h)
11225 long *opd_adjust, adjust;
11231 opd_adjust = get_opd_info (input_sec);
11232 if (opd_adjust == NULL)
11235 value = elfsym->st_value - input_sec->output_offset;
11236 if (!info->relocatable)
11237 value -= input_sec->output_section->vma;
11239 adjust = opd_adjust[value / 8];
11241 elfsym->st_value = 0;
11243 elfsym->st_value += adjust;
11247 /* Finish up dynamic symbol handling. We set the contents of various
11248 dynamic sections here. */
11251 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11252 struct bfd_link_info *info,
11253 struct elf_link_hash_entry *h,
11254 Elf_Internal_Sym *sym)
11256 struct ppc_link_hash_table *htab;
11257 struct plt_entry *ent;
11258 Elf_Internal_Rela rela;
11261 htab = ppc_hash_table (info);
11263 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11264 if (ent->plt.offset != (bfd_vma) -1)
11266 /* This symbol has an entry in the procedure linkage
11267 table. Set it up. */
11269 if (htab->plt == NULL
11270 || htab->relplt == NULL
11271 || htab->glink == NULL)
11274 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11275 fill in the PLT entry. */
11276 rela.r_offset = (htab->plt->output_section->vma
11277 + htab->plt->output_offset
11278 + ent->plt.offset);
11279 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11280 rela.r_addend = ent->addend;
11282 loc = htab->relplt->contents;
11283 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11284 * sizeof (Elf64_External_Rela));
11285 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11290 Elf_Internal_Rela rela;
11293 /* This symbol needs a copy reloc. Set it up. */
11295 if (h->dynindx == -1
11296 || (h->root.type != bfd_link_hash_defined
11297 && h->root.type != bfd_link_hash_defweak)
11298 || htab->relbss == NULL)
11301 rela.r_offset = (h->root.u.def.value
11302 + h->root.u.def.section->output_section->vma
11303 + h->root.u.def.section->output_offset);
11304 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11306 loc = htab->relbss->contents;
11307 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
11308 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11311 /* Mark some specially defined symbols as absolute. */
11312 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11313 sym->st_shndx = SHN_ABS;
11318 /* Used to decide how to sort relocs in an optimal manner for the
11319 dynamic linker, before writing them out. */
11321 static enum elf_reloc_type_class
11322 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
11324 enum elf_ppc64_reloc_type r_type;
11326 r_type = ELF64_R_TYPE (rela->r_info);
11329 case R_PPC64_RELATIVE:
11330 return reloc_class_relative;
11331 case R_PPC64_JMP_SLOT:
11332 return reloc_class_plt;
11334 return reloc_class_copy;
11336 return reloc_class_normal;
11340 /* Finish up the dynamic sections. */
11343 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11344 struct bfd_link_info *info)
11346 struct ppc_link_hash_table *htab;
11350 htab = ppc_hash_table (info);
11351 dynobj = htab->elf.dynobj;
11352 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11354 if (htab->elf.dynamic_sections_created)
11356 Elf64_External_Dyn *dyncon, *dynconend;
11358 if (sdyn == NULL || htab->got == NULL)
11361 dyncon = (Elf64_External_Dyn *) sdyn->contents;
11362 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
11363 for (; dyncon < dynconend; dyncon++)
11365 Elf_Internal_Dyn dyn;
11368 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11375 case DT_PPC64_GLINK:
11377 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11378 /* We stupidly defined DT_PPC64_GLINK to be the start
11379 of glink rather than the first entry point, which is
11380 what ld.so needs, and now have a bigger stub to
11381 support automatic multiple TOCs. */
11382 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
11386 s = bfd_get_section_by_name (output_bfd, ".opd");
11389 dyn.d_un.d_ptr = s->vma;
11392 case DT_PPC64_OPDSZ:
11393 s = bfd_get_section_by_name (output_bfd, ".opd");
11396 dyn.d_un.d_val = s->size;
11401 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11406 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11410 dyn.d_un.d_val = htab->relplt->size;
11414 /* Don't count procedure linkage table relocs in the
11415 overall reloc count. */
11419 dyn.d_un.d_val -= s->size;
11423 /* We may not be using the standard ELF linker script.
11424 If .rela.plt is the first .rela section, we adjust
11425 DT_RELA to not include it. */
11429 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11431 dyn.d_un.d_ptr += s->size;
11435 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
11439 if (htab->got != NULL && htab->got->size != 0)
11441 /* Fill in the first entry in the global offset table.
11442 We use it to hold the link-time TOCbase. */
11443 bfd_put_64 (output_bfd,
11444 elf_gp (output_bfd) + TOC_BASE_OFF,
11445 htab->got->contents);
11447 /* Set .got entry size. */
11448 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
11451 if (htab->plt != NULL && htab->plt->size != 0)
11453 /* Set .plt entry size. */
11454 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
11458 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11459 brlt ourselves if emitrelocations. */
11460 if (htab->brlt != NULL
11461 && htab->brlt->reloc_count != 0
11462 && !_bfd_elf_link_output_relocs (output_bfd,
11464 &elf_section_data (htab->brlt)->rel_hdr,
11465 elf_section_data (htab->brlt)->relocs,
11469 /* We need to handle writing out multiple GOT sections ourselves,
11470 since we didn't add them to DYNOBJ. We know dynobj is the first
11472 while ((dynobj = dynobj->link_next) != NULL)
11476 if (!is_ppc64_elf_target (dynobj->xvec))
11479 s = ppc64_elf_tdata (dynobj)->got;
11482 && s->output_section != bfd_abs_section_ptr
11483 && !bfd_set_section_contents (output_bfd, s->output_section,
11484 s->contents, s->output_offset,
11487 s = ppc64_elf_tdata (dynobj)->relgot;
11490 && s->output_section != bfd_abs_section_ptr
11491 && !bfd_set_section_contents (output_bfd, s->output_section,
11492 s->contents, s->output_offset,
11500 #include "elf64-target.h"