1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
57 static bfd_vma opd_entry_value
58 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
104 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
108 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_post_process_headers _bfd_elf_set_osabi
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE 24
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
131 /* TOC base pointers offset from start of TOC. */
132 #define TOC_BASE_OFF 0x8000
134 /* Offset of tp and dtp pointers from start of TLS block. */
135 #define TP_OFFSET 0x7000
136 #define DTP_OFFSET 0x8000
138 /* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
140 insert an addi to adjust r12. */
141 #define PLT_CALL_STUB_SIZE (7*4)
142 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
145 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
146 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
147 /* ld %r11,xxx+16@l(%r12) */
148 #define BCTR 0x4e800420 /* bctr */
151 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
152 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
153 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
156 #define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157 #define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160 #define BNECTR 0x4ca20420 /* bnectr+ */
161 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
163 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
166 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
168 /* glink call stub instructions. We enter with the index in R0. */
169 #define GLINK_CALL_STUB_SIZE (16*4)
173 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
174 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
176 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
177 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
187 #define NOP 0x60000000
189 /* Some other nops. */
190 #define CROR_151515 0x4def7b82
191 #define CROR_313131 0x4ffffb82
193 /* .glink entries for the first 32k functions are two instructions. */
194 #define LI_R0_0 0x38000000 /* li %r0,0 */
195 #define B_DOT 0x48000000 /* b . */
197 /* After that, we need two instructions to load the index, followed by
199 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
200 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
202 /* Instructions used by the save and restore reg functions. */
203 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
207 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
209 #define LI_R12_0 0x39800000 /* li %r12,0 */
210 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
213 #define BLR 0x4e800020 /* blr */
215 /* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
218 relocate .opd without reloc entries. */
219 #ifndef NO_OPD_RELOCS
220 #define NO_OPD_RELOCS 0
223 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
225 /* Relocation HOWTO's. */
226 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
228 static reloc_howto_type ppc64_elf_howto_raw
[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE
, /* type */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
234 FALSE
, /* pc_relative */
236 complain_overflow_dont
, /* complain_on_overflow */
237 bfd_elf_generic_reloc
, /* special_function */
238 "R_PPC64_NONE", /* name */
239 FALSE
, /* partial_inplace */
242 FALSE
), /* pcrel_offset */
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32
, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_bitfield
, /* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_PPC64_ADDR32", /* name */
254 FALSE
, /* partial_inplace */
256 0xffffffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24
, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE
, /* pc_relative */
267 complain_overflow_bitfield
, /* complain_on_overflow */
268 bfd_elf_generic_reloc
, /* special_function */
269 "R_PPC64_ADDR24", /* name */
270 FALSE
, /* partial_inplace */
272 0x03fffffc, /* dst_mask */
273 FALSE
), /* pcrel_offset */
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16
, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE
, /* pc_relative */
282 complain_overflow_bitfield
, /* complain_on_overflow */
283 bfd_elf_generic_reloc
, /* special_function */
284 "R_PPC64_ADDR16", /* name */
285 FALSE
, /* partial_inplace */
287 0xffff, /* dst_mask */
288 FALSE
), /* pcrel_offset */
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO
, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE
, /* pc_relative */
297 complain_overflow_dont
,/* complain_on_overflow */
298 bfd_elf_generic_reloc
, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
300 FALSE
, /* partial_inplace */
302 0xffff, /* dst_mask */
303 FALSE
), /* pcrel_offset */
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI
, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE
, /* pc_relative */
312 complain_overflow_dont
, /* complain_on_overflow */
313 bfd_elf_generic_reloc
, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
315 FALSE
, /* partial_inplace */
317 0xffff, /* dst_mask */
318 FALSE
), /* pcrel_offset */
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA
, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_dont
, /* complain_on_overflow */
329 ppc64_elf_ha_reloc
, /* special_function */
330 "R_PPC64_ADDR16_HA", /* name */
331 FALSE
, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14
, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE
, /* pc_relative */
344 complain_overflow_bitfield
, /* complain_on_overflow */
345 ppc64_elf_branch_reloc
, /* special_function */
346 "R_PPC64_ADDR14", /* name */
347 FALSE
, /* partial_inplace */
349 0x0000fffc, /* dst_mask */
350 FALSE
), /* pcrel_offset */
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE
, /* pc_relative */
361 complain_overflow_bitfield
, /* complain_on_overflow */
362 ppc64_elf_brtaken_reloc
, /* special_function */
363 "R_PPC64_ADDR14_BRTAKEN",/* name */
364 FALSE
, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE
), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE
, /* pc_relative */
378 complain_overflow_bitfield
, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc
, /* special_function */
380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
381 FALSE
, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE
), /* pcrel_offset */
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24
, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE
, /* pc_relative */
393 complain_overflow_signed
, /* complain_on_overflow */
394 ppc64_elf_branch_reloc
, /* special_function */
395 "R_PPC64_REL24", /* name */
396 FALSE
, /* partial_inplace */
398 0x03fffffc, /* dst_mask */
399 TRUE
), /* pcrel_offset */
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14
, /* type */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
406 TRUE
, /* pc_relative */
408 complain_overflow_signed
, /* complain_on_overflow */
409 ppc64_elf_branch_reloc
, /* special_function */
410 "R_PPC64_REL14", /* name */
411 FALSE
, /* partial_inplace */
413 0x0000fffc, /* dst_mask */
414 TRUE
), /* pcrel_offset */
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
419 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE
, /* pc_relative */
425 complain_overflow_signed
, /* complain_on_overflow */
426 ppc64_elf_brtaken_reloc
, /* special_function */
427 "R_PPC64_REL14_BRTAKEN", /* name */
428 FALSE
, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE
), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
436 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE
, /* pc_relative */
442 complain_overflow_signed
, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc
, /* special_function */
444 "R_PPC64_REL14_BRNTAKEN",/* name */
445 FALSE
, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE
), /* pcrel_offset */
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
452 HOWTO (R_PPC64_GOT16
, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE
, /* pc_relative */
458 complain_overflow_signed
, /* complain_on_overflow */
459 ppc64_elf_unhandled_reloc
, /* special_function */
460 "R_PPC64_GOT16", /* name */
461 FALSE
, /* partial_inplace */
463 0xffff, /* dst_mask */
464 FALSE
), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
468 HOWTO (R_PPC64_GOT16_LO
, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE
, /* pc_relative */
474 complain_overflow_dont
, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc
, /* special_function */
476 "R_PPC64_GOT16_LO", /* name */
477 FALSE
, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE
), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_HI
, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE
, /* pc_relative */
490 complain_overflow_dont
,/* complain_on_overflow */
491 ppc64_elf_unhandled_reloc
, /* special_function */
492 "R_PPC64_GOT16_HI", /* name */
493 FALSE
, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE
), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HA
, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_dont
,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc
, /* special_function */
508 "R_PPC64_GOT16_HA", /* name */
509 FALSE
, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY
, /* type */
521 0, /* this one is variable size */
523 FALSE
, /* pc_relative */
525 complain_overflow_dont
, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc
, /* special_function */
527 "R_PPC64_COPY", /* name */
528 FALSE
, /* partial_inplace */
531 FALSE
), /* pcrel_offset */
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
535 HOWTO (R_PPC64_GLOB_DAT
, /* type */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
539 FALSE
, /* pc_relative */
541 complain_overflow_dont
, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc
, /* special_function */
543 "R_PPC64_GLOB_DAT", /* name */
544 FALSE
, /* partial_inplace */
546 ONES (64), /* dst_mask */
547 FALSE
), /* pcrel_offset */
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT
, /* type */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
555 FALSE
, /* pc_relative */
557 complain_overflow_dont
, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc
, /* special_function */
559 "R_PPC64_JMP_SLOT", /* name */
560 FALSE
, /* partial_inplace */
563 FALSE
), /* pcrel_offset */
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
568 HOWTO (R_PPC64_RELATIVE
, /* type */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
572 FALSE
, /* pc_relative */
574 complain_overflow_dont
, /* complain_on_overflow */
575 bfd_elf_generic_reloc
, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
577 FALSE
, /* partial_inplace */
579 ONES (64), /* dst_mask */
580 FALSE
), /* pcrel_offset */
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32
, /* type */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
587 FALSE
, /* pc_relative */
589 complain_overflow_bitfield
, /* complain_on_overflow */
590 bfd_elf_generic_reloc
, /* special_function */
591 "R_PPC64_UADDR32", /* name */
592 FALSE
, /* partial_inplace */
594 0xffffffff, /* dst_mask */
595 FALSE
), /* pcrel_offset */
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16
, /* type */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
602 FALSE
, /* pc_relative */
604 complain_overflow_bitfield
, /* complain_on_overflow */
605 bfd_elf_generic_reloc
, /* special_function */
606 "R_PPC64_UADDR16", /* name */
607 FALSE
, /* partial_inplace */
609 0xffff, /* dst_mask */
610 FALSE
), /* pcrel_offset */
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32
, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 TRUE
, /* pc_relative */
619 /* FIXME: Verify. Was complain_overflow_bitfield. */
620 complain_overflow_signed
, /* complain_on_overflow */
621 bfd_elf_generic_reloc
, /* special_function */
622 "R_PPC64_REL32", /* name */
623 FALSE
, /* partial_inplace */
625 0xffffffff, /* dst_mask */
626 TRUE
), /* pcrel_offset */
628 /* 32-bit relocation to the symbol's procedure linkage table. */
629 HOWTO (R_PPC64_PLT32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_bitfield
, /* complain_on_overflow */
636 ppc64_elf_unhandled_reloc
, /* special_function */
637 "R_PPC64_PLT32", /* name */
638 FALSE
, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32
, /* type */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
649 TRUE
, /* pc_relative */
651 complain_overflow_signed
, /* complain_on_overflow */
652 bfd_elf_generic_reloc
, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
654 FALSE
, /* partial_inplace */
656 0xffffffff, /* dst_mask */
657 TRUE
), /* pcrel_offset */
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
661 HOWTO (R_PPC64_PLT16_LO
, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE
, /* pc_relative */
667 complain_overflow_dont
, /* complain_on_overflow */
668 ppc64_elf_unhandled_reloc
, /* special_function */
669 "R_PPC64_PLT16_LO", /* name */
670 FALSE
, /* partial_inplace */
672 0xffff, /* dst_mask */
673 FALSE
), /* pcrel_offset */
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
677 HOWTO (R_PPC64_PLT16_HI
, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE
, /* pc_relative */
683 complain_overflow_dont
, /* complain_on_overflow */
684 ppc64_elf_unhandled_reloc
, /* special_function */
685 "R_PPC64_PLT16_HI", /* name */
686 FALSE
, /* partial_inplace */
688 0xffff, /* dst_mask */
689 FALSE
), /* pcrel_offset */
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
693 HOWTO (R_PPC64_PLT16_HA
, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 FALSE
, /* pc_relative */
699 complain_overflow_dont
, /* complain_on_overflow */
700 ppc64_elf_unhandled_reloc
, /* special_function */
701 "R_PPC64_PLT16_HA", /* name */
702 FALSE
, /* partial_inplace */
704 0xffff, /* dst_mask */
705 FALSE
), /* pcrel_offset */
707 /* 16-bit section relative relocation. */
708 HOWTO (R_PPC64_SECTOFF
, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE
, /* pc_relative */
714 complain_overflow_bitfield
, /* complain_on_overflow */
715 ppc64_elf_sectoff_reloc
, /* special_function */
716 "R_PPC64_SECTOFF", /* name */
717 FALSE
, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE
), /* pcrel_offset */
722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
723 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE
, /* pc_relative */
729 complain_overflow_dont
, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc
, /* special_function */
731 "R_PPC64_SECTOFF_LO", /* name */
732 FALSE
, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE
), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE
, /* pc_relative */
744 complain_overflow_dont
, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc
, /* special_function */
746 "R_PPC64_SECTOFF_HI", /* name */
747 FALSE
, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE
), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE
, /* pc_relative */
759 complain_overflow_dont
, /* complain_on_overflow */
760 ppc64_elf_sectoff_ha_reloc
, /* special_function */
761 "R_PPC64_SECTOFF_HA", /* name */
762 FALSE
, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE
), /* pcrel_offset */
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30
, /* type */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
772 TRUE
, /* pc_relative */
774 complain_overflow_dont
, /* complain_on_overflow */
775 bfd_elf_generic_reloc
, /* special_function */
776 "R_PPC64_REL30", /* name */
777 FALSE
, /* partial_inplace */
779 0xfffffffc, /* dst_mask */
780 TRUE
), /* pcrel_offset */
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64
, /* type */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 FALSE
, /* pc_relative */
791 complain_overflow_dont
, /* complain_on_overflow */
792 bfd_elf_generic_reloc
, /* special_function */
793 "R_PPC64_ADDR64", /* name */
794 FALSE
, /* partial_inplace */
796 ONES (64), /* dst_mask */
797 FALSE
), /* pcrel_offset */
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE
, /* pc_relative */
806 complain_overflow_dont
, /* complain_on_overflow */
807 bfd_elf_generic_reloc
, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
809 FALSE
, /* partial_inplace */
811 0xffff, /* dst_mask */
812 FALSE
), /* pcrel_offset */
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE
, /* pc_relative */
822 complain_overflow_dont
, /* complain_on_overflow */
823 ppc64_elf_ha_reloc
, /* special_function */
824 "R_PPC64_ADDR16_HIGHERA", /* name */
825 FALSE
, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE
), /* pcrel_offset */
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE
, /* pc_relative */
837 complain_overflow_dont
, /* complain_on_overflow */
838 bfd_elf_generic_reloc
, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
840 FALSE
, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE
), /* pcrel_offset */
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE
, /* pc_relative */
853 complain_overflow_dont
, /* complain_on_overflow */
854 ppc64_elf_ha_reloc
, /* special_function */
855 "R_PPC64_ADDR16_HIGHESTA", /* name */
856 FALSE
, /* partial_inplace */
858 0xffff, /* dst_mask */
859 FALSE
), /* pcrel_offset */
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64
, /* type */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
866 FALSE
, /* pc_relative */
868 complain_overflow_dont
, /* complain_on_overflow */
869 bfd_elf_generic_reloc
, /* special_function */
870 "R_PPC64_UADDR64", /* name */
871 FALSE
, /* partial_inplace */
873 ONES (64), /* dst_mask */
874 FALSE
), /* pcrel_offset */
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64
, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 TRUE
, /* pc_relative */
883 complain_overflow_dont
, /* complain_on_overflow */
884 bfd_elf_generic_reloc
, /* special_function */
885 "R_PPC64_REL64", /* name */
886 FALSE
, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 TRUE
), /* pcrel_offset */
891 /* 64-bit relocation to the symbol's procedure linkage table. */
892 HOWTO (R_PPC64_PLT64
, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 FALSE
, /* pc_relative */
898 complain_overflow_dont
, /* complain_on_overflow */
899 ppc64_elf_unhandled_reloc
, /* special_function */
900 "R_PPC64_PLT64", /* name */
901 FALSE
, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 FALSE
), /* pcrel_offset */
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64
, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 TRUE
, /* pc_relative */
915 complain_overflow_dont
, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc
, /* special_function */
917 "R_PPC64_PLTREL64", /* name */
918 FALSE
, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 TRUE
), /* pcrel_offset */
923 /* 16 bit TOC-relative relocation. */
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16
, /* type */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE
, /* pc_relative */
932 complain_overflow_signed
, /* complain_on_overflow */
933 ppc64_elf_toc_reloc
, /* special_function */
934 "R_PPC64_TOC16", /* name */
935 FALSE
, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE
), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation without overflow. */
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO
, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE
, /* pc_relative */
949 complain_overflow_dont
, /* complain_on_overflow */
950 ppc64_elf_toc_reloc
, /* special_function */
951 "R_PPC64_TOC16_LO", /* name */
952 FALSE
, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE
), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation, high 16 bits. */
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI
, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE
, /* pc_relative */
966 complain_overflow_dont
, /* complain_on_overflow */
967 ppc64_elf_toc_reloc
, /* special_function */
968 "R_PPC64_TOC16_HI", /* name */
969 FALSE
, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE
), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA
, /* type */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE
, /* pc_relative */
985 complain_overflow_dont
, /* complain_on_overflow */
986 ppc64_elf_toc_ha_reloc
, /* special_function */
987 "R_PPC64_TOC16_HA", /* name */
988 FALSE
, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE
), /* pcrel_offset */
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC
, /* type */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1000 FALSE
, /* pc_relative */
1002 complain_overflow_bitfield
, /* complain_on_overflow */
1003 ppc64_elf_toc64_reloc
, /* special_function */
1004 "R_PPC64_TOC", /* name */
1005 FALSE
, /* partial_inplace */
1007 ONES (64), /* dst_mask */
1008 FALSE
), /* pcrel_offset */
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16
, /* type */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE
, /* pc_relative */
1025 complain_overflow_signed
, /* complain_on_overflow */
1026 ppc64_elf_unhandled_reloc
, /* special_function */
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE
, /* partial_inplace */
1030 0xffff, /* dst_mask */
1031 FALSE
), /* pcrel_offset */
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE
, /* pc_relative */
1041 complain_overflow_dont
, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc
, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE
, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE
), /* pcrel_offset */
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI
, /* 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_HI", /* name */
1060 FALSE
, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE
), /* pcrel_offset */
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE
, /* pc_relative */
1075 complain_overflow_dont
,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc
, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE
, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE
), /* pcrel_offset */
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE
, /* pc_relative */
1090 complain_overflow_bitfield
, /* complain_on_overflow */
1091 bfd_elf_generic_reloc
, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE
, /* partial_inplace */
1095 0xfffc, /* dst_mask */
1096 FALSE
), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE
, /* pc_relative */
1105 complain_overflow_dont
,/* complain_on_overflow */
1106 bfd_elf_generic_reloc
, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE
, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE
), /* pcrel_offset */
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS
, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE
, /* pc_relative */
1120 complain_overflow_signed
, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc
, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE
, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE
), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE
, /* pc_relative */
1135 complain_overflow_dont
, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc
, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE
, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE
), /* pcrel_offset */
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE
, /* pc_relative */
1150 complain_overflow_dont
, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc
, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE
, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE
), /* pcrel_offset */
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE
, /* pc_relative */
1165 complain_overflow_bitfield
, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc
, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE
, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE
), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE
, /* pc_relative */
1180 complain_overflow_dont
, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc
, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE
, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE
), /* pcrel_offset */
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS
, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE
, /* pc_relative */
1195 complain_overflow_signed
, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc
, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE
, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE
), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE
, /* pc_relative */
1210 complain_overflow_dont
, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc
, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE
, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE
), /* pcrel_offset */
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1220 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE
, /* pc_relative */
1226 complain_overflow_signed
, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc
, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE
, /* partial_inplace */
1231 0xfffc, /* dst_mask */
1232 FALSE
), /* pcrel_offset */
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE
, /* pc_relative */
1242 complain_overflow_dont
, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc
, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE
, /* partial_inplace */
1247 0xfffc, /* dst_mask */
1248 FALSE
), /* pcrel_offset */
1250 /* Marker relocs for TLS. */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE
, /* pc_relative */
1257 complain_overflow_dont
, /* complain_on_overflow */
1258 bfd_elf_generic_reloc
, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE
, /* partial_inplace */
1263 FALSE
), /* pcrel_offset */
1265 HOWTO (R_PPC64_TLSGD
,
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE
, /* pc_relative */
1271 complain_overflow_dont
, /* complain_on_overflow */
1272 bfd_elf_generic_reloc
, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE
, /* partial_inplace */
1277 FALSE
), /* pcrel_offset */
1279 HOWTO (R_PPC64_TLSLD
,
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 bfd_elf_generic_reloc
, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE
, /* partial_inplace */
1291 FALSE
), /* pcrel_offset */
1293 HOWTO (R_PPC64_TOCSAVE
,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE
, /* pc_relative */
1299 complain_overflow_dont
, /* complain_on_overflow */
1300 bfd_elf_generic_reloc
, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE
, /* partial_inplace */
1305 FALSE
), /* pcrel_offset */
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64
,
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1313 FALSE
, /* pc_relative */
1315 complain_overflow_dont
, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc
, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE
, /* partial_inplace */
1320 ONES (64), /* dst_mask */
1321 FALSE
), /* pcrel_offset */
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64
,
1328 4, /* 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_DTPREL64", /* name */
1335 FALSE
, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16
,
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE
, /* pc_relative */
1347 complain_overflow_signed
, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc
, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE
, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE
), /* pcrel_offset */
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO
,
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_LO", /* name */
1365 FALSE
, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE
), /* pcrel_offset */
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI
,
1372 16, /* 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_HI", /* name */
1380 FALSE
, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA
,
1387 16, /* 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_HA", /* name */
1395 FALSE
, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE
), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_dont
, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc
, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE
, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1417 32, /* rightshift */
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_HIGHERA", /* name */
1425 FALSE
, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE
), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE
, /* pc_relative */
1437 complain_overflow_dont
, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc
, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE
, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE
), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE
, /* pc_relative */
1452 complain_overflow_dont
, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc
, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE
, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE
), /* pcrel_offset */
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS
,
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE
, /* pc_relative */
1467 complain_overflow_signed
, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc
, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE
, /* partial_inplace */
1472 0xfffc, /* dst_mask */
1473 FALSE
), /* pcrel_offset */
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE
, /* pc_relative */
1482 complain_overflow_dont
, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc
, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE
, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE
), /* pcrel_offset */
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64
,
1494 4, /* 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_TPREL64", /* name */
1501 FALSE
, /* partial_inplace */
1503 ONES (64), /* dst_mask */
1504 FALSE
), /* pcrel_offset */
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16
,
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE
, /* pc_relative */
1513 complain_overflow_signed
, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc
, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE
, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE
), /* pcrel_offset */
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO
,
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_LO", /* name */
1531 FALSE
, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE
), /* pcrel_offset */
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI
,
1538 16, /* 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_HI", /* name */
1546 FALSE
, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE
), /* pcrel_offset */
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA
,
1553 16, /* 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_HA", /* name */
1561 FALSE
, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE
), /* pcrel_offset */
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER
,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE
, /* pc_relative */
1573 complain_overflow_dont
, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc
, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE
, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE
), /* pcrel_offset */
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1583 32, /* rightshift */
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_HIGHERA", /* name */
1591 FALSE
, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE
), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE
, /* pc_relative */
1603 complain_overflow_dont
, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc
, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE
, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE
), /* pcrel_offset */
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE
, /* pc_relative */
1618 complain_overflow_dont
, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc
, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE
, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE
), /* pcrel_offset */
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS
,
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE
, /* pc_relative */
1633 complain_overflow_signed
, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc
, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE
, /* partial_inplace */
1638 0xfffc, /* dst_mask */
1639 FALSE
), /* pcrel_offset */
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS
,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE
, /* pc_relative */
1648 complain_overflow_dont
, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc
, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE
, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE
), /* pcrel_offset */
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16
,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE
, /* pc_relative */
1665 complain_overflow_signed
, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc
, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
1668 FALSE
, /* partial_inplace */
1670 0xffff, /* dst_mask */
1671 FALSE
), /* pcrel_offset */
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE
, /* pc_relative */
1680 complain_overflow_dont
, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc
, /* special_function */
1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
1683 FALSE
, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE
), /* pcrel_offset */
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE
, /* pc_relative */
1695 complain_overflow_dont
, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc
, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
1698 FALSE
, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE
), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE
, /* pc_relative */
1710 complain_overflow_dont
, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc
, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
1713 FALSE
, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE
), /* pcrel_offset */
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16
,
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE
, /* pc_relative */
1727 complain_overflow_signed
, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc
, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
1730 FALSE
, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE
), /* pcrel_offset */
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE
, /* pc_relative */
1742 complain_overflow_dont
, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc
, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
1745 FALSE
, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE
), /* pcrel_offset */
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1752 16, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE
, /* pc_relative */
1757 complain_overflow_dont
, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc
, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
1760 FALSE
, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE
), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE
, /* pc_relative */
1772 complain_overflow_dont
, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc
, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
1775 FALSE
, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE
), /* pcrel_offset */
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 FALSE
, /* pc_relative */
1788 complain_overflow_signed
, /* complain_on_overflow */
1789 ppc64_elf_unhandled_reloc
, /* special_function */
1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
1791 FALSE
, /* partial_inplace */
1793 0xfffc, /* dst_mask */
1794 FALSE
), /* pcrel_offset */
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE
, /* pc_relative */
1803 complain_overflow_dont
, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc
, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1806 FALSE
, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE
), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1813 16, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE
, /* pc_relative */
1818 complain_overflow_dont
, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc
, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
1821 FALSE
, /* partial_inplace */
1823 0xffff, /* dst_mask */
1824 FALSE
), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE
, /* pc_relative */
1833 complain_overflow_dont
, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc
, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE
, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE
), /* pcrel_offset */
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE
, /* pc_relative */
1849 complain_overflow_signed
, /* complain_on_overflow */
1850 ppc64_elf_unhandled_reloc
, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
1852 FALSE
, /* partial_inplace */
1854 0xfffc, /* dst_mask */
1855 FALSE
), /* pcrel_offset */
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE
, /* pc_relative */
1864 complain_overflow_dont
, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc
, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1867 FALSE
, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE
), /* pcrel_offset */
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1874 16, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE
, /* pc_relative */
1879 complain_overflow_dont
, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc
, /* special_function */
1881 "R_PPC64_GOT_TPREL16_HI", /* name */
1882 FALSE
, /* partial_inplace */
1884 0xffff, /* dst_mask */
1885 FALSE
), /* pcrel_offset */
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE
, /* pc_relative */
1894 complain_overflow_dont
, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc
, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HA", /* name */
1897 FALSE
, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE
), /* pcrel_offset */
1902 HOWTO (R_PPC64_JMP_IREL
, /* type */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1906 FALSE
, /* pc_relative */
1908 complain_overflow_dont
, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc
, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE
, /* partial_inplace */
1914 FALSE
), /* pcrel_offset */
1916 HOWTO (R_PPC64_IRELATIVE
, /* type */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1920 FALSE
, /* pc_relative */
1922 complain_overflow_dont
, /* complain_on_overflow */
1923 bfd_elf_generic_reloc
, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE
, /* partial_inplace */
1927 ONES (64), /* dst_mask */
1928 FALSE
), /* pcrel_offset */
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16
, /* type */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 TRUE
, /* pc_relative */
1937 complain_overflow_bitfield
, /* complain_on_overflow */
1938 bfd_elf_generic_reloc
, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE
, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 TRUE
), /* pcrel_offset */
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO
, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE
, /* pc_relative */
1952 complain_overflow_dont
,/* complain_on_overflow */
1953 bfd_elf_generic_reloc
, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE
, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE
), /* pcrel_offset */
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI
, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE
, /* pc_relative */
1967 complain_overflow_dont
, /* complain_on_overflow */
1968 bfd_elf_generic_reloc
, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE
, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE
), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA
, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1981 TRUE
, /* pc_relative */
1983 complain_overflow_dont
, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc
, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE
, /* partial_inplace */
1988 0xffff, /* dst_mask */
1989 TRUE
), /* pcrel_offset */
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE
, /* pc_relative */
1998 complain_overflow_dont
, /* complain_on_overflow */
1999 NULL
, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
2001 FALSE
, /* partial_inplace */
2004 FALSE
), /* pcrel_offset */
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE
, /* pc_relative */
2013 complain_overflow_dont
, /* complain_on_overflow */
2014 NULL
, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
2016 FALSE
, /* partial_inplace */
2019 FALSE
), /* pcrel_offset */
2023 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2027 ppc_howto_init (void)
2029 unsigned int i
, type
;
2032 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2035 type
= ppc64_elf_howto_raw
[i
].type
;
2036 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2037 / sizeof (ppc64_elf_howto_table
[0])));
2038 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2042 static reloc_howto_type
*
2043 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2044 bfd_reloc_code_real_type code
)
2046 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2048 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2049 /* Initialize howto table if needed. */
2057 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2059 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2061 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2063 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2065 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2067 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2069 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2071 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2073 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2075 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2077 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2079 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2081 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2083 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2085 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2087 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2089 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2091 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2093 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2095 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2097 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2099 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2101 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2103 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2105 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2107 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2109 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2111 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2113 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2115 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2117 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2119 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2121 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2123 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2125 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2127 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2129 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2131 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2133 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2135 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2137 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2139 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2141 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2143 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2145 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2147 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2149 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2151 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2153 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2155 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2157 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2159 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2161 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2163 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2167 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2169 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2171 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2175 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2177 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2179 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2181 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2183 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2185 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2187 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2189 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2191 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2193 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2195 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2197 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2199 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2201 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2203 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2211 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2219 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2227 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2235 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2247 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2259 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2261 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2263 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2265 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2267 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2269 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2273 return ppc64_elf_howto_table
[r
];
2276 static reloc_howto_type
*
2277 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2283 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2285 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2286 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2287 return &ppc64_elf_howto_raw
[i
];
2292 /* Set the howto pointer for a PowerPC ELF reloc. */
2295 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2296 Elf_Internal_Rela
*dst
)
2300 /* Initialize howto table if needed. */
2301 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2304 type
= ELF64_R_TYPE (dst
->r_info
);
2305 if (type
>= (sizeof (ppc64_elf_howto_table
)
2306 / sizeof (ppc64_elf_howto_table
[0])))
2308 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2310 type
= R_PPC64_NONE
;
2312 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2315 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2317 static bfd_reloc_status_type
2318 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2319 void *data
, asection
*input_section
,
2320 bfd
*output_bfd
, char **error_message
)
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2325 if (output_bfd
!= NULL
)
2326 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2327 input_section
, output_bfd
, error_message
);
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2332 reloc_entry
->addend
+= 0x8000;
2333 return bfd_reloc_continue
;
2336 static bfd_reloc_status_type
2337 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2338 void *data
, asection
*input_section
,
2339 bfd
*output_bfd
, char **error_message
)
2341 if (output_bfd
!= NULL
)
2342 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2343 input_section
, output_bfd
, error_message
);
2345 if (strcmp (symbol
->section
->name
, ".opd") == 0
2346 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2348 bfd_vma dest
= opd_entry_value (symbol
->section
,
2349 symbol
->value
+ reloc_entry
->addend
,
2351 if (dest
!= (bfd_vma
) -1)
2352 reloc_entry
->addend
= dest
- (symbol
->value
2353 + symbol
->section
->output_section
->vma
2354 + symbol
->section
->output_offset
);
2356 return bfd_reloc_continue
;
2359 static bfd_reloc_status_type
2360 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2361 void *data
, asection
*input_section
,
2362 bfd
*output_bfd
, char **error_message
)
2365 enum elf_ppc64_reloc_type r_type
;
2366 bfd_size_type octets
;
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2
= TRUE
;
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2373 if (output_bfd
!= NULL
)
2374 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2375 input_section
, output_bfd
, error_message
);
2377 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2378 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2379 insn
&= ~(0x01 << 21);
2380 r_type
= reloc_entry
->howto
->type
;
2381 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2382 || r_type
== R_PPC64_REL14_BRTAKEN
)
2383 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2392 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2402 if (!bfd_is_com_section (symbol
->section
))
2403 target
= symbol
->value
;
2404 target
+= symbol
->section
->output_section
->vma
;
2405 target
+= symbol
->section
->output_offset
;
2406 target
+= reloc_entry
->addend
;
2408 from
= (reloc_entry
->address
2409 + input_section
->output_offset
2410 + input_section
->output_section
->vma
);
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma
) (target
- from
) < 0)
2416 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2418 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2419 input_section
, output_bfd
, error_message
);
2422 static bfd_reloc_status_type
2423 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2424 void *data
, asection
*input_section
,
2425 bfd
*output_bfd
, char **error_message
)
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2430 if (output_bfd
!= NULL
)
2431 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2432 input_section
, output_bfd
, error_message
);
2434 /* Subtract the symbol section base address. */
2435 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2436 return bfd_reloc_continue
;
2439 static bfd_reloc_status_type
2440 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2441 void *data
, asection
*input_section
,
2442 bfd
*output_bfd
, char **error_message
)
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2447 if (output_bfd
!= NULL
)
2448 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2449 input_section
, output_bfd
, error_message
);
2451 /* Subtract the symbol section base address. */
2452 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry
->addend
+= 0x8000;
2456 return bfd_reloc_continue
;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2461 void *data
, asection
*input_section
,
2462 bfd
*output_bfd
, char **error_message
)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd
!= NULL
)
2470 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2471 input_section
, output_bfd
, error_message
);
2473 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2475 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2477 /* Subtract the TOC base address. */
2478 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2479 return bfd_reloc_continue
;
2482 static bfd_reloc_status_type
2483 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2484 void *data
, asection
*input_section
,
2485 bfd
*output_bfd
, char **error_message
)
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd
!= NULL
)
2493 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2494 input_section
, output_bfd
, error_message
);
2496 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2498 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2500 /* Subtract the TOC base address. */
2501 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry
->addend
+= 0x8000;
2505 return bfd_reloc_continue
;
2508 static bfd_reloc_status_type
2509 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2510 void *data
, asection
*input_section
,
2511 bfd
*output_bfd
, char **error_message
)
2514 bfd_size_type octets
;
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2519 if (output_bfd
!= NULL
)
2520 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2521 input_section
, output_bfd
, error_message
);
2523 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2525 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2527 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2528 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2529 return bfd_reloc_ok
;
2532 static bfd_reloc_status_type
2533 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2534 void *data
, asection
*input_section
,
2535 bfd
*output_bfd
, char **error_message
)
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2540 if (output_bfd
!= NULL
)
2541 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2542 input_section
, output_bfd
, error_message
);
2544 if (error_message
!= NULL
)
2546 static char buf
[60];
2547 sprintf (buf
, "generic linker can't handle %s",
2548 reloc_entry
->howto
->name
);
2549 *error_message
= buf
;
2551 return bfd_reloc_dangerous
;
2554 /* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2558 struct got_entry
*next
;
2560 /* The symbol addend that we'll be placing in the GOT. */
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2569 Point to the BFD owning this GOT entry. */
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
2574 unsigned char tls_type
;
2576 /* Non-zero if got.ent points to real entry. */
2577 unsigned char is_indirect
;
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2582 bfd_signed_vma refcount
;
2584 struct got_entry
*ent
;
2588 /* The same for PLT. */
2591 struct plt_entry
*next
;
2597 bfd_signed_vma refcount
;
2602 struct ppc64_elf_obj_tdata
2604 struct elf_obj_tdata elf
;
2606 /* Shortcuts to dynamic linker sections. */
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection
*deleted_section
;
2614 /* TLS local dynamic got entry handling. Support for multiple GOT
2615 sections means we potentially need one of these for each input bfd. */
2616 struct got_entry tlsld_got
;
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela
*opd_relocs
;
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
2623 unsigned int has_small_toc_reloc
: 1;
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn
: 1;
2630 #define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2633 #define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2636 #define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
2640 /* Override the generic function because we store some extras. */
2643 ppc64_elf_mkobject (bfd
*abfd
)
2645 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2649 /* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2653 ppc64_elf_object_p (bfd
*abfd
)
2655 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2657 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2659 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd
->arch_info
= abfd
->arch_info
->next
;
2663 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2669 /* Support for core dump NOTE sections. */
2672 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2674 size_t offset
, size
;
2676 if (note
->descsz
!= 504)
2680 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2683 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2691 size
, note
->descpos
+ offset
);
2695 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2697 if (note
->descsz
!= 136)
2700 elf_tdata (abfd
)->core
->pid
2701 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2702 elf_tdata (abfd
)->core
->program
2703 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2704 elf_tdata (abfd
)->core
->command
2705 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2711 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2724 va_start (ap
, note_type
);
2725 memset (data
, 0, sizeof (data
));
2726 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2727 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2729 return elfcore_write_note (abfd
, buf
, bufsiz
,
2730 "CORE", note_type
, data
, sizeof (data
));
2741 va_start (ap
, note_type
);
2742 memset (data
, 0, 112);
2743 pid
= va_arg (ap
, long);
2744 bfd_put_32 (abfd
, pid
, data
+ 32);
2745 cursig
= va_arg (ap
, int);
2746 bfd_put_16 (abfd
, cursig
, data
+ 12);
2747 greg
= va_arg (ap
, const void *);
2748 memcpy (data
+ 112, greg
, 384);
2749 memset (data
+ 496, 0, 8);
2751 return elfcore_write_note (abfd
, buf
, bufsiz
,
2752 "CORE", note_type
, data
, sizeof (data
));
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2767 { NULL
, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type
{
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf
;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection
**func_sec
;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type
:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch
:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2816 if (!sec
->used_by_bfd
)
2818 struct _ppc64_elf_section_data
*sdata
;
2819 bfd_size_type amt
= sizeof (*sdata
);
2821 sdata
= bfd_zalloc (abfd
, amt
);
2824 sec
->used_by_bfd
= sdata
;
2827 return _bfd_elf_new_section_hook (abfd
, sec
);
2830 static struct _opd_sec_data
*
2831 get_opd_info (asection
* sec
)
2834 && ppc64_elf_section_data (sec
) != NULL
2835 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2836 return &ppc64_elf_section_data (sec
)->u
.opd
;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable
;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap
, const void *bp
)
2848 const asymbol
*a
= * (const asymbol
**) ap
;
2849 const asymbol
*b
= * (const asymbol
**) bp
;
2851 /* Section symbols first. */
2852 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2854 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2857 /* then .opd symbols. */
2858 if (strcmp (a
->section
->name
, ".opd") == 0
2859 && strcmp (b
->section
->name
, ".opd") != 0)
2861 if (strcmp (a
->section
->name
, ".opd") != 0
2862 && strcmp (b
->section
->name
, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2867 == (SEC_CODE
| SEC_ALLOC
)
2868 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2869 != (SEC_CODE
| SEC_ALLOC
))
2872 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2873 != (SEC_CODE
| SEC_ALLOC
)
2874 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2875 == (SEC_CODE
| SEC_ALLOC
))
2878 if (synthetic_relocatable
)
2880 if (a
->section
->id
< b
->section
->id
)
2883 if (a
->section
->id
> b
->section
->id
)
2887 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2890 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2898 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2901 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2904 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2907 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2910 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2913 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2916 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2933 mid
= (lo
+ hi
) >> 1;
2934 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2936 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2946 mid
= (lo
+ hi
) >> 1;
2947 if (syms
[mid
]->section
->id
< id
)
2949 else if (syms
[mid
]->section
->id
> id
)
2951 else if (syms
[mid
]->value
< value
)
2953 else if (syms
[mid
]->value
> value
)
2963 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2965 bfd_vma vma
= *(bfd_vma
*) ptr
;
2966 return ((section
->flags
& SEC_ALLOC
) != 0
2967 && section
->vma
<= vma
2968 && vma
< section
->vma
+ section
->size
);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2976 long static_count
, asymbol
**static_syms
,
2977 long dyn_count
, asymbol
**dyn_syms
,
2984 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2986 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2991 opd
= bfd_get_section_by_name (abfd
, ".opd");
2995 symcount
= static_count
;
2997 symcount
+= dyn_count
;
3001 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3005 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3009 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3011 else if (!relocatable
&& static_count
== 0)
3012 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3014 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3016 synthetic_relocatable
= relocatable
;
3017 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3019 if (!relocatable
&& symcount
> 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3026 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3027 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3028 syms
[j
++] = syms
[i
];
3033 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3037 for (; i
< symcount
; ++i
)
3038 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3039 != (SEC_CODE
| SEC_ALLOC
))
3040 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3044 for (; i
< symcount
; ++i
)
3045 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3049 for (; i
< symcount
; ++i
)
3050 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3054 for (; i
< symcount
; ++i
)
3055 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3056 != (SEC_CODE
| SEC_ALLOC
))
3064 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3069 if (opdsymend
== secsymend
)
3072 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3073 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3077 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3084 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3088 while (r
< opd
->relocation
+ relcount
3089 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3092 if (r
== opd
->relocation
+ relcount
)
3095 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3098 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3101 sym
= *r
->sym_ptr_ptr
;
3102 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3103 sym
->section
->id
, sym
->value
+ r
->addend
))
3106 size
+= sizeof (asymbol
);
3107 size
+= strlen (syms
[i
]->name
) + 2;
3111 s
= *ret
= bfd_malloc (size
);
3118 names
= (char *) (s
+ count
);
3120 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3124 while (r
< opd
->relocation
+ relcount
3125 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3128 if (r
== opd
->relocation
+ relcount
)
3131 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3134 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3137 sym
= *r
->sym_ptr_ptr
;
3138 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3139 sym
->section
->id
, sym
->value
+ r
->addend
))
3144 s
->flags
|= BSF_SYNTHETIC
;
3145 s
->section
= sym
->section
;
3146 s
->value
= sym
->value
+ r
->addend
;
3149 len
= strlen (syms
[i
]->name
);
3150 memcpy (names
, syms
[i
]->name
, len
+ 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s
->udata
.p
= syms
[i
];
3161 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3165 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3166 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3169 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3173 free_contents_and_exit
:
3181 for (i
= secsymend
; i
< opdsymend
; ++i
)
3185 /* Ignore bogus symbols. */
3186 if (syms
[i
]->value
> opd
->size
- 8)
3189 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3190 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3193 size
+= sizeof (asymbol
);
3194 size
+= strlen (syms
[i
]->name
) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3202 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3204 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3206 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3207 goto free_contents_and_exit
;
3209 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3210 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3213 extdynend
= extdyn
+ dynamic
->size
;
3214 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3216 Elf_Internal_Dyn dyn
;
3217 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3219 if (dyn
.d_tag
== DT_NULL
)
3222 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma
= dyn
.d_un
.d_val
+ 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd
, glink
, buf
,
3245 glink_vma
+ 4 - glink
->vma
, 4))
3247 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3249 if ((insn
& ~0x3fffffc) == 0)
3250 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3254 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3256 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3259 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3260 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3261 goto free_contents_and_exit
;
3263 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3264 size
+= plt_count
* sizeof (asymbol
);
3266 p
= relplt
->relocation
;
3267 for (i
= 0; i
< plt_count
; i
++, p
++)
3269 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3271 size
+= sizeof ("+0x") - 1 + 16;
3276 s
= *ret
= bfd_malloc (size
);
3278 goto free_contents_and_exit
;
3280 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3282 for (i
= secsymend
; i
< opdsymend
; ++i
)
3286 if (syms
[i
]->value
> opd
->size
- 8)
3289 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3290 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3294 asection
*sec
= abfd
->sections
;
3301 long mid
= (lo
+ hi
) >> 1;
3302 if (syms
[mid
]->section
->vma
< ent
)
3304 else if (syms
[mid
]->section
->vma
> ent
)
3308 sec
= syms
[mid
]->section
;
3313 if (lo
>= hi
&& lo
> codesecsym
)
3314 sec
= syms
[lo
- 1]->section
;
3316 for (; sec
!= NULL
; sec
= sec
->next
)
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3322 if ((sec
->flags
& SEC_ALLOC
) == 0)
3324 if ((sec
->flags
& SEC_CODE
) != 0)
3327 s
->flags
|= BSF_SYNTHETIC
;
3328 s
->value
= ent
- s
->section
->vma
;
3331 len
= strlen (syms
[i
]->name
);
3332 memcpy (names
, syms
[i
]->name
, len
+ 1);
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s
->udata
.p
= syms
[i
];
3342 if (glink
!= NULL
&& relplt
!= NULL
)
3346 /* Add a symbol for the main glink trampoline. */
3347 memset (s
, 0, sizeof *s
);
3349 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3351 s
->value
= resolv_vma
- glink
->vma
;
3353 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names
+= sizeof ("__glink_PLTresolve");
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p
= relplt
->relocation
;
3376 for (i
= 0; i
< plt_count
; i
++, p
++)
3380 *s
= **p
->sym_ptr_ptr
;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s
->flags
& BSF_LOCAL
) == 0)
3384 s
->flags
|= BSF_GLOBAL
;
3385 s
->flags
|= BSF_SYNTHETIC
;
3387 s
->value
= glink_vma
- glink
->vma
;
3390 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3391 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3395 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3396 names
+= sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3398 names
+= strlen (names
);
3400 memcpy (names
, "@plt", sizeof ("@plt"));
3401 names
+= sizeof ("@plt");
3416 /* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3433 The function definition in another object file might be:
3437 . .quad .TOC.@tocbase
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3457 . std 2,40(1) # this is the general idea
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
3482 definition from some other object, eg. a static library.
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
3488 /* Of those relocs that might be copied as dynamic relocs, this function
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
3493 must_be_dyn_reloc (struct bfd_link_info
*info
,
3494 enum elf_ppc64_reloc_type r_type
)
3506 case R_PPC64_TPREL16
:
3507 case R_PPC64_TPREL16_LO
:
3508 case R_PPC64_TPREL16_HI
:
3509 case R_PPC64_TPREL16_HA
:
3510 case R_PPC64_TPREL16_DS
:
3511 case R_PPC64_TPREL16_LO_DS
:
3512 case R_PPC64_TPREL16_HIGHER
:
3513 case R_PPC64_TPREL16_HIGHERA
:
3514 case R_PPC64_TPREL16_HIGHEST
:
3515 case R_PPC64_TPREL16_HIGHESTA
:
3516 case R_PPC64_TPREL64
:
3517 return !info
->executable
;
3521 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3532 redefines the function descriptor symbol to point to the copy. This
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
3536 #define ELIMINATE_COPY_RELOCS 1
3538 /* Section name for stubs is the associated section name plus this
3540 #define STUB_SUFFIX ".stub"
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3560 . addis %r12,%r2,xxx@toc@ha
3562 . ld %r11,xxx+0@toc@l(%r12)
3564 . ld %r2,xxx+8@toc@l(%r12)
3565 . ld %r11,xxx+16@toc@l(%r12)
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
3589 enum ppc_stub_type
{
3591 ppc_stub_long_branch
,
3592 ppc_stub_long_branch_r2off
,
3593 ppc_stub_plt_branch
,
3594 ppc_stub_plt_branch_r2off
,
3596 ppc_stub_plt_call_r2save
3599 struct ppc_stub_hash_entry
{
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root
;
3604 enum ppc_stub_type stub_type
;
3606 /* The stub section. */
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset
;
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value
;
3615 asection
*target_section
;
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry
*h
;
3619 struct plt_entry
*plt_ent
;
3621 /* Where this stub is being called from, or, in the case of combined
3622 stub sections, the first input section in the group. */
3626 struct ppc_branch_hash_entry
{
3628 /* Base hash table entry structure. */
3629 struct bfd_hash_entry root
;
3631 /* Offset within branch lookup table. */
3632 unsigned int offset
;
3634 /* Generation marker. */
3638 /* Used to track dynamic relocations for local symbols. */
3639 struct ppc_dyn_relocs
3641 struct ppc_dyn_relocs
*next
;
3643 /* The input section of the reloc. */
3646 /* Total number of relocs copied for the input section. */
3647 unsigned int count
: 31;
3649 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3650 unsigned int ifunc
: 1;
3653 struct ppc_link_hash_entry
3655 struct elf_link_hash_entry elf
;
3658 /* A pointer to the most recently used stub hash entry against this
3660 struct ppc_stub_hash_entry
*stub_cache
;
3662 /* A pointer to the next symbol starting with a '.' */
3663 struct ppc_link_hash_entry
*next_dot_sym
;
3666 /* Track dynamic relocs copied for this symbol. */
3667 struct elf_dyn_relocs
*dyn_relocs
;
3669 /* Link between function code and descriptor symbols. */
3670 struct ppc_link_hash_entry
*oh
;
3672 /* Flag function code and descriptor symbols. */
3673 unsigned int is_func
:1;
3674 unsigned int is_func_descriptor
:1;
3675 unsigned int fake
:1;
3677 /* Whether global opd/toc sym has been adjusted or not.
3678 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3679 should be set for all globals defined in any opd/toc section. */
3680 unsigned int adjust_done
:1;
3682 /* Set if we twiddled this symbol to weak at some stage. */
3683 unsigned int was_undefined
:1;
3685 /* Contexts in which symbol is used in the GOT (or TOC).
3686 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3687 corresponding relocs are encountered during check_relocs.
3688 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3689 indicate the corresponding GOT entry type is not needed.
3690 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3691 a TPREL one. We use a separate flag rather than setting TPREL
3692 just for convenience in distinguishing the two cases. */
3693 #define TLS_GD 1 /* GD reloc. */
3694 #define TLS_LD 2 /* LD reloc. */
3695 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3696 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3697 #define TLS_TLS 16 /* Any TLS reloc. */
3698 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3699 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3700 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3701 unsigned char tls_mask
;
3704 /* ppc64 ELF linker hash table. */
3706 struct ppc_link_hash_table
3708 struct elf_link_hash_table elf
;
3710 /* The stub hash table. */
3711 struct bfd_hash_table stub_hash_table
;
3713 /* Another hash table for plt_branch stubs. */
3714 struct bfd_hash_table branch_hash_table
;
3716 /* Hash table for function prologue tocsave. */
3717 htab_t tocsave_htab
;
3719 /* Linker stub bfd. */
3722 /* Linker call-backs. */
3723 asection
* (*add_stub_section
) (const char *, asection
*);
3724 void (*layout_sections_again
) (void);
3726 /* Array to keep track of which stub sections have been created, and
3727 information on stub grouping. */
3729 /* This is the section to which stubs in the group will be attached. */
3731 /* The stub section. */
3733 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3737 /* Temp used when calculating TOC pointers. */
3740 asection
*toc_first_sec
;
3742 /* Highest input section id. */
3745 /* Highest output section index. */
3748 /* Used when adding symbols. */
3749 struct ppc_link_hash_entry
*dot_syms
;
3751 /* List of input sections for each output section. */
3752 asection
**input_list
;
3754 /* Short-cuts to get to dynamic linker sections. */
3766 asection
*glink_eh_frame
;
3768 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3769 struct ppc_link_hash_entry
*tls_get_addr
;
3770 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3772 /* The size of reliplt used by got entry relocs. */
3773 bfd_size_type got_reli_size
;
3776 unsigned long stub_count
[ppc_stub_plt_call_r2save
];
3778 /* Number of stubs against global syms. */
3779 unsigned long stub_globals
;
3781 /* Alignment of PLT call stubs. */
3782 unsigned int plt_stub_align
:4;
3784 /* Set if PLT call stubs should load r11. */
3785 unsigned int plt_static_chain
:1;
3787 /* Set if PLT call stubs need a read-read barrier. */
3788 unsigned int plt_thread_safe
:1;
3790 /* Set if we should emit symbols for stubs. */
3791 unsigned int emit_stub_syms
:1;
3793 /* Set if __tls_get_addr optimization should not be done. */
3794 unsigned int no_tls_get_addr_opt
:1;
3796 /* Support for multiple toc sections. */
3797 unsigned int do_multi_toc
:1;
3798 unsigned int multi_toc_needed
:1;
3799 unsigned int second_toc_pass
:1;
3800 unsigned int do_toc_opt
:1;
3803 unsigned int stub_error
:1;
3805 /* Temp used by ppc64_elf_process_dot_syms. */
3806 unsigned int twiddled_syms
:1;
3808 /* Incremented every time we size stubs. */
3809 unsigned int stub_iteration
;
3811 /* Small local sym cache. */
3812 struct sym_cache sym_cache
;
3815 /* Rename some of the generic section flags to better document how they
3818 /* Nonzero if this section has TLS related relocations. */
3819 #define has_tls_reloc sec_flg0
3821 /* Nonzero if this section has a call to __tls_get_addr. */
3822 #define has_tls_get_addr_call sec_flg1
3824 /* Nonzero if this section has any toc or got relocs. */
3825 #define has_toc_reloc sec_flg2
3827 /* Nonzero if this section has a call to another section that uses
3829 #define makes_toc_func_call sec_flg3
3831 /* Recursion protection when determining above flag. */
3832 #define call_check_in_progress sec_flg4
3833 #define call_check_done sec_flg5
3835 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3837 #define ppc_hash_table(p) \
3838 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3839 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3841 #define ppc_stub_hash_lookup(table, string, create, copy) \
3842 ((struct ppc_stub_hash_entry *) \
3843 bfd_hash_lookup ((table), (string), (create), (copy)))
3845 #define ppc_branch_hash_lookup(table, string, create, copy) \
3846 ((struct ppc_branch_hash_entry *) \
3847 bfd_hash_lookup ((table), (string), (create), (copy)))
3849 /* Create an entry in the stub hash table. */
3851 static struct bfd_hash_entry
*
3852 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3853 struct bfd_hash_table
*table
,
3856 /* Allocate the structure if it has not already been allocated by a
3860 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3865 /* Call the allocation method of the superclass. */
3866 entry
= bfd_hash_newfunc (entry
, table
, string
);
3869 struct ppc_stub_hash_entry
*eh
;
3871 /* Initialize the local fields. */
3872 eh
= (struct ppc_stub_hash_entry
*) entry
;
3873 eh
->stub_type
= ppc_stub_none
;
3874 eh
->stub_sec
= NULL
;
3875 eh
->stub_offset
= 0;
3876 eh
->target_value
= 0;
3877 eh
->target_section
= NULL
;
3885 /* Create an entry in the branch hash table. */
3887 static struct bfd_hash_entry
*
3888 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3889 struct bfd_hash_table
*table
,
3892 /* Allocate the structure if it has not already been allocated by a
3896 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3901 /* Call the allocation method of the superclass. */
3902 entry
= bfd_hash_newfunc (entry
, table
, string
);
3905 struct ppc_branch_hash_entry
*eh
;
3907 /* Initialize the local fields. */
3908 eh
= (struct ppc_branch_hash_entry
*) entry
;
3916 /* Create an entry in a ppc64 ELF linker hash table. */
3918 static struct bfd_hash_entry
*
3919 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3920 struct bfd_hash_table
*table
,
3923 /* Allocate the structure if it has not already been allocated by a
3927 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3932 /* Call the allocation method of the superclass. */
3933 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3936 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3938 memset (&eh
->u
.stub_cache
, 0,
3939 (sizeof (struct ppc_link_hash_entry
)
3940 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3942 /* When making function calls, old ABI code references function entry
3943 points (dot symbols), while new ABI code references the function
3944 descriptor symbol. We need to make any combination of reference and
3945 definition work together, without breaking archive linking.
3947 For a defined function "foo" and an undefined call to "bar":
3948 An old object defines "foo" and ".foo", references ".bar" (possibly
3950 A new object defines "foo" and references "bar".
3952 A new object thus has no problem with its undefined symbols being
3953 satisfied by definitions in an old object. On the other hand, the
3954 old object won't have ".bar" satisfied by a new object.
3956 Keep a list of newly added dot-symbols. */
3958 if (string
[0] == '.')
3960 struct ppc_link_hash_table
*htab
;
3962 htab
= (struct ppc_link_hash_table
*) table
;
3963 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3964 htab
->dot_syms
= eh
;
3971 struct tocsave_entry
{
3977 tocsave_htab_hash (const void *p
)
3979 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
3980 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
3984 tocsave_htab_eq (const void *p1
, const void *p2
)
3986 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
3987 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
3988 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
3991 /* Create a ppc64 ELF linker hash table. */
3993 static struct bfd_link_hash_table
*
3994 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3996 struct ppc_link_hash_table
*htab
;
3997 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3999 htab
= bfd_zmalloc (amt
);
4003 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4004 sizeof (struct ppc_link_hash_entry
),
4011 /* Init the stub hash table too. */
4012 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4013 sizeof (struct ppc_stub_hash_entry
)))
4016 /* And the branch hash table. */
4017 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4018 sizeof (struct ppc_branch_hash_entry
)))
4021 htab
->tocsave_htab
= htab_try_create (1024,
4025 if (htab
->tocsave_htab
== NULL
)
4028 /* Initializing two fields of the union is just cosmetic. We really
4029 only care about glist, but when compiled on a 32-bit host the
4030 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4031 debugger inspection of these fields look nicer. */
4032 htab
->elf
.init_got_refcount
.refcount
= 0;
4033 htab
->elf
.init_got_refcount
.glist
= NULL
;
4034 htab
->elf
.init_plt_refcount
.refcount
= 0;
4035 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4036 htab
->elf
.init_got_offset
.offset
= 0;
4037 htab
->elf
.init_got_offset
.glist
= NULL
;
4038 htab
->elf
.init_plt_offset
.offset
= 0;
4039 htab
->elf
.init_plt_offset
.glist
= NULL
;
4041 return &htab
->elf
.root
;
4044 /* Free the derived linker hash table. */
4047 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4049 struct ppc_link_hash_table
*htab
= (struct ppc_link_hash_table
*) hash
;
4051 bfd_hash_table_free (&htab
->stub_hash_table
);
4052 bfd_hash_table_free (&htab
->branch_hash_table
);
4053 if (htab
->tocsave_htab
)
4054 htab_delete (htab
->tocsave_htab
);
4055 _bfd_elf_link_hash_table_free (hash
);
4058 /* Create sections for linker generated code. */
4061 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4063 struct ppc_link_hash_table
*htab
;
4066 htab
= ppc_hash_table (info
);
4068 /* Create .sfpr for code to save and restore fp regs. */
4069 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4070 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4071 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4073 if (htab
->sfpr
== NULL
4074 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4077 /* Create .glink for lazy dynamic linking support. */
4078 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4080 if (htab
->glink
== NULL
4081 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4084 if (!info
->no_ld_generated_unwind_info
)
4086 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4087 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4088 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4091 if (htab
->glink_eh_frame
== NULL
4092 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4096 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4097 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4098 if (htab
->iplt
== NULL
4099 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4102 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4103 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4104 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4107 if (htab
->reliplt
== NULL
4108 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4111 /* Create branch lookup table for plt_branch stubs. */
4112 flags
= (SEC_ALLOC
| SEC_LOAD
4113 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4114 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4116 if (htab
->brlt
== NULL
4117 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4123 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4124 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4125 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4128 if (htab
->relbrlt
== NULL
4129 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4135 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4138 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4140 struct ppc_link_hash_table
*htab
;
4142 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4144 /* Always hook our dynamic sections into the first bfd, which is the
4145 linker created stub bfd. This ensures that the GOT header is at
4146 the start of the output TOC section. */
4147 htab
= ppc_hash_table (info
);
4150 htab
->stub_bfd
= abfd
;
4151 htab
->elf
.dynobj
= abfd
;
4153 if (info
->relocatable
)
4156 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4159 /* Build a name for an entry in the stub hash table. */
4162 ppc_stub_name (const asection
*input_section
,
4163 const asection
*sym_sec
,
4164 const struct ppc_link_hash_entry
*h
,
4165 const Elf_Internal_Rela
*rel
)
4170 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4171 offsets from a sym as a branch target? In fact, we could
4172 probably assume the addend is always zero. */
4173 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4177 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4178 stub_name
= bfd_malloc (len
);
4179 if (stub_name
== NULL
)
4182 len
= sprintf (stub_name
, "%08x.%s+%x",
4183 input_section
->id
& 0xffffffff,
4184 h
->elf
.root
.root
.string
,
4185 (int) rel
->r_addend
& 0xffffffff);
4189 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4190 stub_name
= bfd_malloc (len
);
4191 if (stub_name
== NULL
)
4194 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4195 input_section
->id
& 0xffffffff,
4196 sym_sec
->id
& 0xffffffff,
4197 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4198 (int) rel
->r_addend
& 0xffffffff);
4200 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4201 stub_name
[len
- 2] = 0;
4205 /* Look up an entry in the stub hash. Stub entries are cached because
4206 creating the stub name takes a bit of time. */
4208 static struct ppc_stub_hash_entry
*
4209 ppc_get_stub_entry (const asection
*input_section
,
4210 const asection
*sym_sec
,
4211 struct ppc_link_hash_entry
*h
,
4212 const Elf_Internal_Rela
*rel
,
4213 struct ppc_link_hash_table
*htab
)
4215 struct ppc_stub_hash_entry
*stub_entry
;
4216 const asection
*id_sec
;
4218 /* If this input section is part of a group of sections sharing one
4219 stub section, then use the id of the first section in the group.
4220 Stub names need to include a section id, as there may well be
4221 more than one stub used to reach say, printf, and we need to
4222 distinguish between them. */
4223 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4225 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4226 && h
->u
.stub_cache
->h
== h
4227 && h
->u
.stub_cache
->id_sec
== id_sec
)
4229 stub_entry
= h
->u
.stub_cache
;
4235 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4236 if (stub_name
== NULL
)
4239 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4240 stub_name
, FALSE
, FALSE
);
4242 h
->u
.stub_cache
= stub_entry
;
4250 /* Add a new stub entry to the stub hash. Not all fields of the new
4251 stub entry are initialised. */
4253 static struct ppc_stub_hash_entry
*
4254 ppc_add_stub (const char *stub_name
,
4256 struct bfd_link_info
*info
)
4258 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4261 struct ppc_stub_hash_entry
*stub_entry
;
4263 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4264 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4265 if (stub_sec
== NULL
)
4267 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4268 if (stub_sec
== NULL
)
4274 namelen
= strlen (link_sec
->name
);
4275 len
= namelen
+ sizeof (STUB_SUFFIX
);
4276 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4280 memcpy (s_name
, link_sec
->name
, namelen
);
4281 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4282 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4283 if (stub_sec
== NULL
)
4285 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4287 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4290 /* Enter this entry into the linker stub hash table. */
4291 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4293 if (stub_entry
== NULL
)
4295 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4296 section
->owner
, stub_name
);
4300 stub_entry
->stub_sec
= stub_sec
;
4301 stub_entry
->stub_offset
= 0;
4302 stub_entry
->id_sec
= link_sec
;
4306 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4307 not already done. */
4310 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4312 asection
*got
, *relgot
;
4314 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4316 if (!is_ppc64_elf (abfd
))
4323 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4326 htab
->got
= bfd_get_linker_section (htab
->elf
.dynobj
, ".got");
4331 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4332 | SEC_LINKER_CREATED
);
4334 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4336 || !bfd_set_section_alignment (abfd
, got
, 3))
4339 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4340 flags
| SEC_READONLY
);
4342 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4345 ppc64_elf_tdata (abfd
)->got
= got
;
4346 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4350 /* Create the dynamic sections, and set up shortcuts. */
4353 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4355 struct ppc_link_hash_table
*htab
;
4357 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4360 htab
= ppc_hash_table (info
);
4365 htab
->got
= bfd_get_linker_section (dynobj
, ".got");
4366 htab
->plt
= bfd_get_linker_section (dynobj
, ".plt");
4367 htab
->relplt
= bfd_get_linker_section (dynobj
, ".rela.plt");
4368 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4370 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4372 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4373 || (!info
->shared
&& !htab
->relbss
))
4379 /* Follow indirect and warning symbol links. */
4381 static inline struct bfd_link_hash_entry
*
4382 follow_link (struct bfd_link_hash_entry
*h
)
4384 while (h
->type
== bfd_link_hash_indirect
4385 || h
->type
== bfd_link_hash_warning
)
4390 static inline struct elf_link_hash_entry
*
4391 elf_follow_link (struct elf_link_hash_entry
*h
)
4393 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4396 static inline struct ppc_link_hash_entry
*
4397 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4399 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4402 /* Merge PLT info on FROM with that on TO. */
4405 move_plt_plist (struct ppc_link_hash_entry
*from
,
4406 struct ppc_link_hash_entry
*to
)
4408 if (from
->elf
.plt
.plist
!= NULL
)
4410 if (to
->elf
.plt
.plist
!= NULL
)
4412 struct plt_entry
**entp
;
4413 struct plt_entry
*ent
;
4415 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4417 struct plt_entry
*dent
;
4419 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4420 if (dent
->addend
== ent
->addend
)
4422 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4429 *entp
= to
->elf
.plt
.plist
;
4432 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4433 from
->elf
.plt
.plist
= NULL
;
4437 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4440 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4441 struct elf_link_hash_entry
*dir
,
4442 struct elf_link_hash_entry
*ind
)
4444 struct ppc_link_hash_entry
*edir
, *eind
;
4446 edir
= (struct ppc_link_hash_entry
*) dir
;
4447 eind
= (struct ppc_link_hash_entry
*) ind
;
4449 edir
->is_func
|= eind
->is_func
;
4450 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4451 edir
->tls_mask
|= eind
->tls_mask
;
4452 if (eind
->oh
!= NULL
)
4453 edir
->oh
= ppc_follow_link (eind
->oh
);
4455 /* If called to transfer flags for a weakdef during processing
4456 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4457 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4458 if (!(ELIMINATE_COPY_RELOCS
4459 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4460 && edir
->elf
.dynamic_adjusted
))
4461 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4463 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4464 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4465 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4466 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4468 /* Copy over any dynamic relocs we may have on the indirect sym. */
4469 if (eind
->dyn_relocs
!= NULL
)
4471 if (edir
->dyn_relocs
!= NULL
)
4473 struct elf_dyn_relocs
**pp
;
4474 struct elf_dyn_relocs
*p
;
4476 /* Add reloc counts against the indirect sym to the direct sym
4477 list. Merge any entries against the same section. */
4478 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4480 struct elf_dyn_relocs
*q
;
4482 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4483 if (q
->sec
== p
->sec
)
4485 q
->pc_count
+= p
->pc_count
;
4486 q
->count
+= p
->count
;
4493 *pp
= edir
->dyn_relocs
;
4496 edir
->dyn_relocs
= eind
->dyn_relocs
;
4497 eind
->dyn_relocs
= NULL
;
4500 /* If we were called to copy over info for a weak sym, that's all.
4501 You might think dyn_relocs need not be copied over; After all,
4502 both syms will be dynamic or both non-dynamic so we're just
4503 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4504 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4505 dyn_relocs in read-only sections, and it does so on what is the
4507 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4510 /* Copy over got entries that we may have already seen to the
4511 symbol which just became indirect. */
4512 if (eind
->elf
.got
.glist
!= NULL
)
4514 if (edir
->elf
.got
.glist
!= NULL
)
4516 struct got_entry
**entp
;
4517 struct got_entry
*ent
;
4519 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4521 struct got_entry
*dent
;
4523 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4524 if (dent
->addend
== ent
->addend
4525 && dent
->owner
== ent
->owner
4526 && dent
->tls_type
== ent
->tls_type
)
4528 dent
->got
.refcount
+= ent
->got
.refcount
;
4535 *entp
= edir
->elf
.got
.glist
;
4538 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4539 eind
->elf
.got
.glist
= NULL
;
4542 /* And plt entries. */
4543 move_plt_plist (eind
, edir
);
4545 if (eind
->elf
.dynindx
!= -1)
4547 if (edir
->elf
.dynindx
!= -1)
4548 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4549 edir
->elf
.dynstr_index
);
4550 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4551 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4552 eind
->elf
.dynindx
= -1;
4553 eind
->elf
.dynstr_index
= 0;
4557 /* Find the function descriptor hash entry from the given function code
4558 hash entry FH. Link the entries via their OH fields. */
4560 static struct ppc_link_hash_entry
*
4561 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4563 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4567 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4569 fdh
= (struct ppc_link_hash_entry
*)
4570 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4574 fdh
->is_func_descriptor
= 1;
4580 return ppc_follow_link (fdh
);
4583 /* Make a fake function descriptor sym for the code sym FH. */
4585 static struct ppc_link_hash_entry
*
4586 make_fdh (struct bfd_link_info
*info
,
4587 struct ppc_link_hash_entry
*fh
)
4591 struct bfd_link_hash_entry
*bh
;
4592 struct ppc_link_hash_entry
*fdh
;
4594 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4595 newsym
= bfd_make_empty_symbol (abfd
);
4596 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4597 newsym
->section
= bfd_und_section_ptr
;
4599 newsym
->flags
= BSF_WEAK
;
4602 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4603 newsym
->flags
, newsym
->section
,
4604 newsym
->value
, NULL
, FALSE
, FALSE
,
4608 fdh
= (struct ppc_link_hash_entry
*) bh
;
4609 fdh
->elf
.non_elf
= 0;
4611 fdh
->is_func_descriptor
= 1;
4618 /* Fix function descriptor symbols defined in .opd sections to be
4622 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4623 struct bfd_link_info
*info
,
4624 Elf_Internal_Sym
*isym
,
4625 const char **name ATTRIBUTE_UNUSED
,
4626 flagword
*flags ATTRIBUTE_UNUSED
,
4628 bfd_vma
*value ATTRIBUTE_UNUSED
)
4630 if ((ibfd
->flags
& DYNAMIC
) == 0
4631 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4632 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4634 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4636 if ((ibfd
->flags
& DYNAMIC
) == 0)
4637 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4639 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4641 else if (*sec
!= NULL
4642 && strcmp ((*sec
)->name
, ".opd") == 0)
4643 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4648 /* This function makes an old ABI object reference to ".bar" cause the
4649 inclusion of a new ABI object archive that defines "bar".
4650 NAME is a symbol defined in an archive. Return a symbol in the hash
4651 table that might be satisfied by the archive symbols. */
4653 static struct elf_link_hash_entry
*
4654 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4655 struct bfd_link_info
*info
,
4658 struct elf_link_hash_entry
*h
;
4662 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4664 /* Don't return this sym if it is a fake function descriptor
4665 created by add_symbol_adjust. */
4666 && !(h
->root
.type
== bfd_link_hash_undefweak
4667 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4673 len
= strlen (name
);
4674 dot_name
= bfd_alloc (abfd
, len
+ 2);
4675 if (dot_name
== NULL
)
4676 return (struct elf_link_hash_entry
*) 0 - 1;
4678 memcpy (dot_name
+ 1, name
, len
+ 1);
4679 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4680 bfd_release (abfd
, dot_name
);
4684 /* This function satisfies all old ABI object references to ".bar" if a
4685 new ABI object defines "bar". Well, at least, undefined dot symbols
4686 are made weak. This stops later archive searches from including an
4687 object if we already have a function descriptor definition. It also
4688 prevents the linker complaining about undefined symbols.
4689 We also check and correct mismatched symbol visibility here. The
4690 most restrictive visibility of the function descriptor and the
4691 function entry symbol is used. */
4694 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4696 struct ppc_link_hash_table
*htab
;
4697 struct ppc_link_hash_entry
*fdh
;
4699 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4702 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4703 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4705 if (eh
->elf
.root
.root
.string
[0] != '.')
4708 htab
= ppc_hash_table (info
);
4712 fdh
= lookup_fdh (eh
, htab
);
4715 if (!info
->relocatable
4716 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4717 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4718 && eh
->elf
.ref_regular
)
4720 /* Make an undefweak function descriptor sym, which is enough to
4721 pull in an --as-needed shared lib, but won't cause link
4722 errors. Archives are handled elsewhere. */
4723 fdh
= make_fdh (info
, eh
);
4726 fdh
->elf
.ref_regular
= 1;
4731 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4732 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4733 if (entry_vis
< descr_vis
)
4734 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4735 else if (entry_vis
> descr_vis
)
4736 eh
->elf
.other
+= descr_vis
- entry_vis
;
4738 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4739 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4740 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4742 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4743 eh
->was_undefined
= 1;
4744 htab
->twiddled_syms
= 1;
4751 /* Process list of dot-symbols we made in link_hash_newfunc. */
4754 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4756 struct ppc_link_hash_table
*htab
;
4757 struct ppc_link_hash_entry
**p
, *eh
;
4759 if (!is_ppc64_elf (info
->output_bfd
))
4761 htab
= ppc_hash_table (info
);
4765 if (is_ppc64_elf (ibfd
))
4767 p
= &htab
->dot_syms
;
4768 while ((eh
= *p
) != NULL
)
4771 if (&eh
->elf
== htab
->elf
.hgot
)
4773 else if (htab
->elf
.hgot
== NULL
4774 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
4775 htab
->elf
.hgot
= &eh
->elf
;
4776 else if (!add_symbol_adjust (eh
, info
))
4778 p
= &eh
->u
.next_dot_sym
;
4782 /* Clear the list for non-ppc64 input files. */
4783 p
= &htab
->dot_syms
;
4784 while ((eh
= *p
) != NULL
)
4787 p
= &eh
->u
.next_dot_sym
;
4790 /* We need to fix the undefs list for any syms we have twiddled to
4792 if (htab
->twiddled_syms
)
4794 bfd_link_repair_undef_list (&htab
->elf
.root
);
4795 htab
->twiddled_syms
= 0;
4800 /* Undo hash table changes when an --as-needed input file is determined
4801 not to be needed. */
4804 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4805 struct bfd_link_info
*info
)
4807 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4812 htab
->dot_syms
= NULL
;
4816 /* If --just-symbols against a final linked binary, then assume we need
4817 toc adjusting stubs when calling functions defined there. */
4820 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4822 if ((sec
->flags
& SEC_CODE
) != 0
4823 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4824 && is_ppc64_elf (sec
->owner
))
4826 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4828 && got
->size
>= elf_backend_got_header_size
4829 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4830 sec
->has_toc_reloc
= 1;
4832 _bfd_elf_link_just_syms (sec
, info
);
4835 static struct plt_entry
**
4836 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4837 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4839 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4840 struct plt_entry
**local_plt
;
4841 unsigned char *local_got_tls_masks
;
4843 if (local_got_ents
== NULL
)
4845 bfd_size_type size
= symtab_hdr
->sh_info
;
4847 size
*= (sizeof (*local_got_ents
)
4848 + sizeof (*local_plt
)
4849 + sizeof (*local_got_tls_masks
));
4850 local_got_ents
= bfd_zalloc (abfd
, size
);
4851 if (local_got_ents
== NULL
)
4853 elf_local_got_ents (abfd
) = local_got_ents
;
4856 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4858 struct got_entry
*ent
;
4860 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4861 if (ent
->addend
== r_addend
4862 && ent
->owner
== abfd
4863 && ent
->tls_type
== tls_type
)
4867 bfd_size_type amt
= sizeof (*ent
);
4868 ent
= bfd_alloc (abfd
, amt
);
4871 ent
->next
= local_got_ents
[r_symndx
];
4872 ent
->addend
= r_addend
;
4874 ent
->tls_type
= tls_type
;
4875 ent
->is_indirect
= FALSE
;
4876 ent
->got
.refcount
= 0;
4877 local_got_ents
[r_symndx
] = ent
;
4879 ent
->got
.refcount
+= 1;
4882 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4883 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4884 local_got_tls_masks
[r_symndx
] |= tls_type
;
4886 return local_plt
+ r_symndx
;
4890 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4892 struct plt_entry
*ent
;
4894 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4895 if (ent
->addend
== addend
)
4899 bfd_size_type amt
= sizeof (*ent
);
4900 ent
= bfd_alloc (abfd
, amt
);
4904 ent
->addend
= addend
;
4905 ent
->plt
.refcount
= 0;
4908 ent
->plt
.refcount
+= 1;
4913 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4915 return (r_type
== R_PPC64_REL24
4916 || r_type
== R_PPC64_REL14
4917 || r_type
== R_PPC64_REL14_BRTAKEN
4918 || r_type
== R_PPC64_REL14_BRNTAKEN
4919 || r_type
== R_PPC64_ADDR24
4920 || r_type
== R_PPC64_ADDR14
4921 || r_type
== R_PPC64_ADDR14_BRTAKEN
4922 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4925 /* Look through the relocs for a section during the first phase, and
4926 calculate needed space in the global offset table, procedure
4927 linkage table, and dynamic reloc sections. */
4930 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4931 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4933 struct ppc_link_hash_table
*htab
;
4934 Elf_Internal_Shdr
*symtab_hdr
;
4935 struct elf_link_hash_entry
**sym_hashes
;
4936 const Elf_Internal_Rela
*rel
;
4937 const Elf_Internal_Rela
*rel_end
;
4939 asection
**opd_sym_map
;
4940 struct elf_link_hash_entry
*tga
, *dottga
;
4942 if (info
->relocatable
)
4945 /* Don't do anything special with non-loaded, non-alloced sections.
4946 In particular, any relocs in such sections should not affect GOT
4947 and PLT reference counting (ie. we don't allow them to create GOT
4948 or PLT entries), there's no possibility or desire to optimize TLS
4949 relocs, and there's not much point in propagating relocs to shared
4950 libs that the dynamic linker won't relocate. */
4951 if ((sec
->flags
& SEC_ALLOC
) == 0)
4954 BFD_ASSERT (is_ppc64_elf (abfd
));
4956 htab
= ppc_hash_table (info
);
4960 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4961 FALSE
, FALSE
, TRUE
);
4962 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4963 FALSE
, FALSE
, TRUE
);
4964 symtab_hdr
= &elf_symtab_hdr (abfd
);
4965 sym_hashes
= elf_sym_hashes (abfd
);
4968 if (strcmp (sec
->name
, ".opd") == 0)
4970 /* Garbage collection needs some extra help with .opd sections.
4971 We don't want to necessarily keep everything referenced by
4972 relocs in .opd, as that would keep all functions. Instead,
4973 if we reference an .opd symbol (a function descriptor), we
4974 want to keep the function code symbol's section. This is
4975 easy for global symbols, but for local syms we need to keep
4976 information about the associated function section. */
4979 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4980 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4981 if (opd_sym_map
== NULL
)
4983 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4984 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4985 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4988 rel_end
= relocs
+ sec
->reloc_count
;
4989 for (rel
= relocs
; rel
< rel_end
; rel
++)
4991 unsigned long r_symndx
;
4992 struct elf_link_hash_entry
*h
;
4993 enum elf_ppc64_reloc_type r_type
;
4995 struct _ppc64_elf_section_data
*ppc64_sec
;
4996 struct plt_entry
**ifunc
;
4998 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4999 if (r_symndx
< symtab_hdr
->sh_info
)
5003 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5004 h
= elf_follow_link (h
);
5006 /* PR15323, ref flags aren't set for references in the same
5008 h
->root
.non_ir_ref
= 1;
5010 if (h
== htab
->elf
.hgot
)
5011 sec
->has_toc_reloc
= 1;
5018 if (h
->type
== STT_GNU_IFUNC
)
5021 ifunc
= &h
->plt
.plist
;
5026 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5031 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5033 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5034 rel
->r_addend
, PLT_IFUNC
);
5039 r_type
= ELF64_R_TYPE (rel
->r_info
);
5040 if (is_branch_reloc (r_type
))
5042 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5045 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5046 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5047 /* We have a new-style __tls_get_addr call with a marker
5051 /* Mark this section as having an old-style call. */
5052 sec
->has_tls_get_addr_call
= 1;
5055 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5057 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5065 /* These special tls relocs tie a call to __tls_get_addr with
5066 its parameter symbol. */
5069 case R_PPC64_GOT_TLSLD16
:
5070 case R_PPC64_GOT_TLSLD16_LO
:
5071 case R_PPC64_GOT_TLSLD16_HI
:
5072 case R_PPC64_GOT_TLSLD16_HA
:
5073 tls_type
= TLS_TLS
| TLS_LD
;
5076 case R_PPC64_GOT_TLSGD16
:
5077 case R_PPC64_GOT_TLSGD16_LO
:
5078 case R_PPC64_GOT_TLSGD16_HI
:
5079 case R_PPC64_GOT_TLSGD16_HA
:
5080 tls_type
= TLS_TLS
| TLS_GD
;
5083 case R_PPC64_GOT_TPREL16_DS
:
5084 case R_PPC64_GOT_TPREL16_LO_DS
:
5085 case R_PPC64_GOT_TPREL16_HI
:
5086 case R_PPC64_GOT_TPREL16_HA
:
5087 if (!info
->executable
)
5088 info
->flags
|= DF_STATIC_TLS
;
5089 tls_type
= TLS_TLS
| TLS_TPREL
;
5092 case R_PPC64_GOT_DTPREL16_DS
:
5093 case R_PPC64_GOT_DTPREL16_LO_DS
:
5094 case R_PPC64_GOT_DTPREL16_HI
:
5095 case R_PPC64_GOT_DTPREL16_HA
:
5096 tls_type
= TLS_TLS
| TLS_DTPREL
;
5098 sec
->has_tls_reloc
= 1;
5102 case R_PPC64_GOT16_DS
:
5103 case R_PPC64_GOT16_HA
:
5104 case R_PPC64_GOT16_HI
:
5105 case R_PPC64_GOT16_LO
:
5106 case R_PPC64_GOT16_LO_DS
:
5107 /* This symbol requires a global offset table entry. */
5108 sec
->has_toc_reloc
= 1;
5109 if (r_type
== R_PPC64_GOT_TLSLD16
5110 || r_type
== R_PPC64_GOT_TLSGD16
5111 || r_type
== R_PPC64_GOT_TPREL16_DS
5112 || r_type
== R_PPC64_GOT_DTPREL16_DS
5113 || r_type
== R_PPC64_GOT16
5114 || r_type
== R_PPC64_GOT16_DS
)
5116 htab
->do_multi_toc
= 1;
5117 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5120 if (ppc64_elf_tdata (abfd
)->got
== NULL
5121 && !create_got_section (abfd
, info
))
5126 struct ppc_link_hash_entry
*eh
;
5127 struct got_entry
*ent
;
5129 eh
= (struct ppc_link_hash_entry
*) h
;
5130 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5131 if (ent
->addend
== rel
->r_addend
5132 && ent
->owner
== abfd
5133 && ent
->tls_type
== tls_type
)
5137 bfd_size_type amt
= sizeof (*ent
);
5138 ent
= bfd_alloc (abfd
, amt
);
5141 ent
->next
= eh
->elf
.got
.glist
;
5142 ent
->addend
= rel
->r_addend
;
5144 ent
->tls_type
= tls_type
;
5145 ent
->is_indirect
= FALSE
;
5146 ent
->got
.refcount
= 0;
5147 eh
->elf
.got
.glist
= ent
;
5149 ent
->got
.refcount
+= 1;
5150 eh
->tls_mask
|= tls_type
;
5153 /* This is a global offset table entry for a local symbol. */
5154 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5155 rel
->r_addend
, tls_type
))
5159 case R_PPC64_PLT16_HA
:
5160 case R_PPC64_PLT16_HI
:
5161 case R_PPC64_PLT16_LO
:
5164 /* This symbol requires a procedure linkage table entry. We
5165 actually build the entry in adjust_dynamic_symbol,
5166 because this might be a case of linking PIC code without
5167 linking in any dynamic objects, in which case we don't
5168 need to generate a procedure linkage table after all. */
5171 /* It does not make sense to have a procedure linkage
5172 table entry for a local symbol. */
5173 bfd_set_error (bfd_error_bad_value
);
5178 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5181 if (h
->root
.root
.string
[0] == '.'
5182 && h
->root
.root
.string
[1] != '\0')
5183 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5187 /* The following relocations don't need to propagate the
5188 relocation if linking a shared object since they are
5189 section relative. */
5190 case R_PPC64_SECTOFF
:
5191 case R_PPC64_SECTOFF_LO
:
5192 case R_PPC64_SECTOFF_HI
:
5193 case R_PPC64_SECTOFF_HA
:
5194 case R_PPC64_SECTOFF_DS
:
5195 case R_PPC64_SECTOFF_LO_DS
:
5196 case R_PPC64_DTPREL16
:
5197 case R_PPC64_DTPREL16_LO
:
5198 case R_PPC64_DTPREL16_HI
:
5199 case R_PPC64_DTPREL16_HA
:
5200 case R_PPC64_DTPREL16_DS
:
5201 case R_PPC64_DTPREL16_LO_DS
:
5202 case R_PPC64_DTPREL16_HIGHER
:
5203 case R_PPC64_DTPREL16_HIGHERA
:
5204 case R_PPC64_DTPREL16_HIGHEST
:
5205 case R_PPC64_DTPREL16_HIGHESTA
:
5210 case R_PPC64_REL16_LO
:
5211 case R_PPC64_REL16_HI
:
5212 case R_PPC64_REL16_HA
:
5216 case R_PPC64_TOC16_DS
:
5217 htab
->do_multi_toc
= 1;
5218 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5219 case R_PPC64_TOC16_LO
:
5220 case R_PPC64_TOC16_HI
:
5221 case R_PPC64_TOC16_HA
:
5222 case R_PPC64_TOC16_LO_DS
:
5223 sec
->has_toc_reloc
= 1;
5226 /* This relocation describes the C++ object vtable hierarchy.
5227 Reconstruct it for later use during GC. */
5228 case R_PPC64_GNU_VTINHERIT
:
5229 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5233 /* This relocation describes which C++ vtable entries are actually
5234 used. Record for later use during GC. */
5235 case R_PPC64_GNU_VTENTRY
:
5236 BFD_ASSERT (h
!= NULL
);
5238 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5243 case R_PPC64_REL14_BRTAKEN
:
5244 case R_PPC64_REL14_BRNTAKEN
:
5246 asection
*dest
= NULL
;
5248 /* Heuristic: If jumping outside our section, chances are
5249 we are going to need a stub. */
5252 /* If the sym is weak it may be overridden later, so
5253 don't assume we know where a weak sym lives. */
5254 if (h
->root
.type
== bfd_link_hash_defined
)
5255 dest
= h
->root
.u
.def
.section
;
5259 Elf_Internal_Sym
*isym
;
5261 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5266 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5270 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5275 if (h
!= NULL
&& ifunc
== NULL
)
5277 /* We may need a .plt entry if the function this reloc
5278 refers to is in a shared lib. */
5279 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5282 if (h
->root
.root
.string
[0] == '.'
5283 && h
->root
.root
.string
[1] != '\0')
5284 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5285 if (h
== tga
|| h
== dottga
)
5286 sec
->has_tls_reloc
= 1;
5290 case R_PPC64_TPREL64
:
5291 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5292 if (!info
->executable
)
5293 info
->flags
|= DF_STATIC_TLS
;
5296 case R_PPC64_DTPMOD64
:
5297 if (rel
+ 1 < rel_end
5298 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5299 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5300 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5302 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5305 case R_PPC64_DTPREL64
:
5306 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5308 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5309 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5310 /* This is the second reloc of a dtpmod, dtprel pair.
5311 Don't mark with TLS_DTPREL. */
5315 sec
->has_tls_reloc
= 1;
5318 struct ppc_link_hash_entry
*eh
;
5319 eh
= (struct ppc_link_hash_entry
*) h
;
5320 eh
->tls_mask
|= tls_type
;
5323 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5324 rel
->r_addend
, tls_type
))
5327 ppc64_sec
= ppc64_elf_section_data (sec
);
5328 if (ppc64_sec
->sec_type
!= sec_toc
)
5332 /* One extra to simplify get_tls_mask. */
5333 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5334 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5335 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5337 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5338 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5339 if (ppc64_sec
->u
.toc
.add
== NULL
)
5341 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5342 ppc64_sec
->sec_type
= sec_toc
;
5344 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5345 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5346 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5348 /* Mark the second slot of a GD or LD entry.
5349 -1 to indicate GD and -2 to indicate LD. */
5350 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5351 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5352 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5353 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5356 case R_PPC64_TPREL16
:
5357 case R_PPC64_TPREL16_LO
:
5358 case R_PPC64_TPREL16_HI
:
5359 case R_PPC64_TPREL16_HA
:
5360 case R_PPC64_TPREL16_DS
:
5361 case R_PPC64_TPREL16_LO_DS
:
5362 case R_PPC64_TPREL16_HIGHER
:
5363 case R_PPC64_TPREL16_HIGHERA
:
5364 case R_PPC64_TPREL16_HIGHEST
:
5365 case R_PPC64_TPREL16_HIGHESTA
:
5368 if (!info
->executable
)
5369 info
->flags
|= DF_STATIC_TLS
;
5374 case R_PPC64_ADDR64
:
5375 if (opd_sym_map
!= NULL
5376 && rel
+ 1 < rel_end
5377 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5381 if (h
->root
.root
.string
[0] == '.'
5382 && h
->root
.root
.string
[1] != 0
5383 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5386 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5391 Elf_Internal_Sym
*isym
;
5393 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5398 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5399 if (s
!= NULL
&& s
!= sec
)
5400 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5408 case R_PPC64_ADDR14
:
5409 case R_PPC64_ADDR14_BRNTAKEN
:
5410 case R_PPC64_ADDR14_BRTAKEN
:
5411 case R_PPC64_ADDR16
:
5412 case R_PPC64_ADDR16_DS
:
5413 case R_PPC64_ADDR16_HA
:
5414 case R_PPC64_ADDR16_HI
:
5415 case R_PPC64_ADDR16_HIGHER
:
5416 case R_PPC64_ADDR16_HIGHERA
:
5417 case R_PPC64_ADDR16_HIGHEST
:
5418 case R_PPC64_ADDR16_HIGHESTA
:
5419 case R_PPC64_ADDR16_LO
:
5420 case R_PPC64_ADDR16_LO_DS
:
5421 case R_PPC64_ADDR24
:
5422 case R_PPC64_ADDR32
:
5423 case R_PPC64_UADDR16
:
5424 case R_PPC64_UADDR32
:
5425 case R_PPC64_UADDR64
:
5427 if (h
!= NULL
&& !info
->shared
)
5428 /* We may need a copy reloc. */
5431 /* Don't propagate .opd relocs. */
5432 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5435 /* If we are creating a shared library, and this is a reloc
5436 against a global symbol, or a non PC relative reloc
5437 against a local symbol, then we need to copy the reloc
5438 into the shared library. However, if we are linking with
5439 -Bsymbolic, we do not need to copy a reloc against a
5440 global symbol which is defined in an object we are
5441 including in the link (i.e., DEF_REGULAR is set). At
5442 this point we have not seen all the input files, so it is
5443 possible that DEF_REGULAR is not set now but will be set
5444 later (it is never cleared). In case of a weak definition,
5445 DEF_REGULAR may be cleared later by a strong definition in
5446 a shared library. We account for that possibility below by
5447 storing information in the dyn_relocs field of the hash
5448 table entry. A similar situation occurs when creating
5449 shared libraries and symbol visibility changes render the
5452 If on the other hand, we are creating an executable, we
5453 may need to keep relocations for symbols satisfied by a
5454 dynamic library if we manage to avoid copy relocs for the
5458 && (must_be_dyn_reloc (info
, r_type
)
5460 && (!SYMBOLIC_BIND (info
, h
)
5461 || h
->root
.type
== bfd_link_hash_defweak
5462 || !h
->def_regular
))))
5463 || (ELIMINATE_COPY_RELOCS
5466 && (h
->root
.type
== bfd_link_hash_defweak
5467 || !h
->def_regular
))
5471 /* We must copy these reloc types into the output file.
5472 Create a reloc section in dynobj and make room for
5476 sreloc
= _bfd_elf_make_dynamic_reloc_section
5477 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5483 /* If this is a global symbol, we count the number of
5484 relocations we need for this symbol. */
5487 struct elf_dyn_relocs
*p
;
5488 struct elf_dyn_relocs
**head
;
5490 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5492 if (p
== NULL
|| p
->sec
!= sec
)
5494 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5504 if (!must_be_dyn_reloc (info
, r_type
))
5509 /* Track dynamic relocs needed for local syms too.
5510 We really need local syms available to do this
5512 struct ppc_dyn_relocs
*p
;
5513 struct ppc_dyn_relocs
**head
;
5514 bfd_boolean is_ifunc
;
5517 Elf_Internal_Sym
*isym
;
5519 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5524 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5528 vpp
= &elf_section_data (s
)->local_dynrel
;
5529 head
= (struct ppc_dyn_relocs
**) vpp
;
5530 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5532 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5534 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5536 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5542 p
->ifunc
= is_ifunc
;
5558 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5559 of the code entry point, and its section. */
5562 opd_entry_value (asection
*opd_sec
,
5564 asection
**code_sec
,
5566 bfd_boolean in_code_sec
)
5568 bfd
*opd_bfd
= opd_sec
->owner
;
5569 Elf_Internal_Rela
*relocs
;
5570 Elf_Internal_Rela
*lo
, *hi
, *look
;
5573 /* No relocs implies we are linking a --just-symbols object, or looking
5574 at a final linked executable with addr2line or somesuch. */
5575 if (opd_sec
->reloc_count
== 0)
5579 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5580 return (bfd_vma
) -1;
5582 val
= bfd_get_64 (opd_bfd
, buf
);
5583 if (code_sec
!= NULL
)
5585 asection
*sec
, *likely
= NULL
;
5591 && val
< sec
->vma
+ sec
->size
)
5597 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5599 && (sec
->flags
& SEC_LOAD
) != 0
5600 && (sec
->flags
& SEC_ALLOC
) != 0)
5605 if (code_off
!= NULL
)
5606 *code_off
= val
- likely
->vma
;
5612 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5614 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5616 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5618 /* Go find the opd reloc at the sym address. */
5620 BFD_ASSERT (lo
!= NULL
);
5621 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5625 look
= lo
+ (hi
- lo
) / 2;
5626 if (look
->r_offset
< offset
)
5628 else if (look
->r_offset
> offset
)
5632 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5634 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5635 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5637 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5640 if (symndx
< symtab_hdr
->sh_info
5641 || elf_sym_hashes (opd_bfd
) == NULL
)
5643 Elf_Internal_Sym
*sym
;
5645 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5648 size_t symcnt
= symtab_hdr
->sh_info
;
5649 if (elf_sym_hashes (opd_bfd
) == NULL
)
5650 symcnt
= symtab_hdr
->sh_size
/ symtab_hdr
->sh_entsize
;
5651 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, symcnt
,
5652 0, NULL
, NULL
, NULL
);
5655 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5659 val
= sym
->st_value
;
5660 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5661 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5665 struct elf_link_hash_entry
**sym_hashes
;
5666 struct elf_link_hash_entry
*rh
;
5668 sym_hashes
= elf_sym_hashes (opd_bfd
);
5669 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5672 rh
= elf_follow_link (rh
);
5673 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5674 || rh
->root
.type
== bfd_link_hash_defweak
);
5675 val
= rh
->root
.u
.def
.value
;
5676 sec
= rh
->root
.u
.def
.section
;
5680 /* Handle the odd case where we can be called
5681 during bfd_elf_link_add_symbols before the
5682 symbol hashes have been fully populated. */
5683 Elf_Internal_Sym
*sym
;
5685 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, 1,
5686 symndx
, NULL
, NULL
, NULL
);
5690 val
= sym
->st_value
;
5691 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5695 val
+= look
->r_addend
;
5696 if (code_off
!= NULL
)
5698 if (code_sec
!= NULL
)
5700 if (in_code_sec
&& *code_sec
!= sec
)
5705 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5706 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5715 /* If the ELF symbol SYM might be a function in SEC, return the
5716 function size and set *CODE_OFF to the function's entry point,
5717 otherwise return zero. */
5719 static bfd_size_type
5720 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
5725 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
5726 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
5730 if (!(sym
->flags
& BSF_SYNTHETIC
))
5731 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
5733 if (strcmp (sym
->section
->name
, ".opd") == 0)
5735 if (opd_entry_value (sym
->section
, sym
->value
,
5736 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
5738 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5739 symbol. This size has nothing to do with the code size of the
5740 function, which is what we're supposed to return, but the
5741 code size isn't available without looking up the dot-sym.
5742 However, doing that would be a waste of time particularly
5743 since elf_find_function will look at the dot-sym anyway.
5744 Now, elf_find_function will keep the largest size of any
5745 function sym found at the code address of interest, so return
5746 1 here to avoid it incorrectly caching a larger function size
5747 for a small function. This does mean we return the wrong
5748 size for a new-ABI function of size 24, but all that does is
5749 disable caching for such functions. */
5755 if (sym
->section
!= sec
)
5757 *code_off
= sym
->value
;
5764 /* Return true if symbol is defined in a regular object file. */
5767 is_static_defined (struct elf_link_hash_entry
*h
)
5769 return ((h
->root
.type
== bfd_link_hash_defined
5770 || h
->root
.type
== bfd_link_hash_defweak
)
5771 && h
->root
.u
.def
.section
!= NULL
5772 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5775 /* If FDH is a function descriptor symbol, return the associated code
5776 entry symbol if it is defined. Return NULL otherwise. */
5778 static struct ppc_link_hash_entry
*
5779 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5781 if (fdh
->is_func_descriptor
)
5783 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5784 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5785 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5791 /* If FH is a function code entry symbol, return the associated
5792 function descriptor symbol if it is defined. Return NULL otherwise. */
5794 static struct ppc_link_hash_entry
*
5795 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5798 && fh
->oh
->is_func_descriptor
)
5800 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5801 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5802 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5808 /* Mark all our entry sym sections, both opd and code section. */
5811 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5813 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5814 struct bfd_sym_chain
*sym
;
5819 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5821 struct ppc_link_hash_entry
*eh
, *fh
;
5824 eh
= (struct ppc_link_hash_entry
*)
5825 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5828 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5829 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5832 fh
= defined_code_entry (eh
);
5835 sec
= fh
->elf
.root
.u
.def
.section
;
5836 sec
->flags
|= SEC_KEEP
;
5838 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5839 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5840 eh
->elf
.root
.u
.def
.value
,
5841 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
5842 sec
->flags
|= SEC_KEEP
;
5844 sec
= eh
->elf
.root
.u
.def
.section
;
5845 sec
->flags
|= SEC_KEEP
;
5849 /* Mark sections containing dynamically referenced symbols. When
5850 building shared libraries, we must assume that any visible symbol is
5854 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5856 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5857 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5858 struct ppc_link_hash_entry
*fdh
;
5860 /* Dynamic linking info is on the func descriptor sym. */
5861 fdh
= defined_func_desc (eh
);
5865 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5866 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5867 && (eh
->elf
.ref_dynamic
5868 || (!info
->executable
5869 && eh
->elf
.def_regular
5870 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5871 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
5872 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
5873 || !bfd_hide_sym_by_version (info
->version_info
,
5874 eh
->elf
.root
.root
.string
)))))
5877 struct ppc_link_hash_entry
*fh
;
5879 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5881 /* Function descriptor syms cause the associated
5882 function code sym section to be marked. */
5883 fh
= defined_code_entry (eh
);
5886 code_sec
= fh
->elf
.root
.u
.def
.section
;
5887 code_sec
->flags
|= SEC_KEEP
;
5889 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5890 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5891 eh
->elf
.root
.u
.def
.value
,
5892 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
5893 code_sec
->flags
|= SEC_KEEP
;
5899 /* Return the section that should be marked against GC for a given
5903 ppc64_elf_gc_mark_hook (asection
*sec
,
5904 struct bfd_link_info
*info
,
5905 Elf_Internal_Rela
*rel
,
5906 struct elf_link_hash_entry
*h
,
5907 Elf_Internal_Sym
*sym
)
5911 /* Syms return NULL if we're marking .opd, so we avoid marking all
5912 function sections, as all functions are referenced in .opd. */
5914 if (get_opd_info (sec
) != NULL
)
5919 enum elf_ppc64_reloc_type r_type
;
5920 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5922 r_type
= ELF64_R_TYPE (rel
->r_info
);
5925 case R_PPC64_GNU_VTINHERIT
:
5926 case R_PPC64_GNU_VTENTRY
:
5930 switch (h
->root
.type
)
5932 case bfd_link_hash_defined
:
5933 case bfd_link_hash_defweak
:
5934 eh
= (struct ppc_link_hash_entry
*) h
;
5935 fdh
= defined_func_desc (eh
);
5939 /* Function descriptor syms cause the associated
5940 function code sym section to be marked. */
5941 fh
= defined_code_entry (eh
);
5944 /* They also mark their opd section. */
5945 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5947 rsec
= fh
->elf
.root
.u
.def
.section
;
5949 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5950 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5951 eh
->elf
.root
.u
.def
.value
,
5952 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
5953 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5955 rsec
= h
->root
.u
.def
.section
;
5958 case bfd_link_hash_common
:
5959 rsec
= h
->root
.u
.c
.p
->section
;
5963 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5969 struct _opd_sec_data
*opd
;
5971 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5972 opd
= get_opd_info (rsec
);
5973 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5977 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5984 /* Update the .got, .plt. and dynamic reloc reference counts for the
5985 section being removed. */
5988 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5989 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5991 struct ppc_link_hash_table
*htab
;
5992 Elf_Internal_Shdr
*symtab_hdr
;
5993 struct elf_link_hash_entry
**sym_hashes
;
5994 struct got_entry
**local_got_ents
;
5995 const Elf_Internal_Rela
*rel
, *relend
;
5997 if (info
->relocatable
)
6000 if ((sec
->flags
& SEC_ALLOC
) == 0)
6003 elf_section_data (sec
)->local_dynrel
= NULL
;
6005 htab
= ppc_hash_table (info
);
6009 symtab_hdr
= &elf_symtab_hdr (abfd
);
6010 sym_hashes
= elf_sym_hashes (abfd
);
6011 local_got_ents
= elf_local_got_ents (abfd
);
6013 relend
= relocs
+ sec
->reloc_count
;
6014 for (rel
= relocs
; rel
< relend
; rel
++)
6016 unsigned long r_symndx
;
6017 enum elf_ppc64_reloc_type r_type
;
6018 struct elf_link_hash_entry
*h
= NULL
;
6019 unsigned char tls_type
= 0;
6021 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6022 r_type
= ELF64_R_TYPE (rel
->r_info
);
6023 if (r_symndx
>= symtab_hdr
->sh_info
)
6025 struct ppc_link_hash_entry
*eh
;
6026 struct elf_dyn_relocs
**pp
;
6027 struct elf_dyn_relocs
*p
;
6029 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6030 h
= elf_follow_link (h
);
6031 eh
= (struct ppc_link_hash_entry
*) h
;
6033 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6036 /* Everything must go for SEC. */
6042 if (is_branch_reloc (r_type
))
6044 struct plt_entry
**ifunc
= NULL
;
6047 if (h
->type
== STT_GNU_IFUNC
)
6048 ifunc
= &h
->plt
.plist
;
6050 else if (local_got_ents
!= NULL
)
6052 struct plt_entry
**local_plt
= (struct plt_entry
**)
6053 (local_got_ents
+ symtab_hdr
->sh_info
);
6054 unsigned char *local_got_tls_masks
= (unsigned char *)
6055 (local_plt
+ symtab_hdr
->sh_info
);
6056 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6057 ifunc
= local_plt
+ r_symndx
;
6061 struct plt_entry
*ent
;
6063 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6064 if (ent
->addend
== rel
->r_addend
)
6068 if (ent
->plt
.refcount
> 0)
6069 ent
->plt
.refcount
-= 1;
6076 case R_PPC64_GOT_TLSLD16
:
6077 case R_PPC64_GOT_TLSLD16_LO
:
6078 case R_PPC64_GOT_TLSLD16_HI
:
6079 case R_PPC64_GOT_TLSLD16_HA
:
6080 tls_type
= TLS_TLS
| TLS_LD
;
6083 case R_PPC64_GOT_TLSGD16
:
6084 case R_PPC64_GOT_TLSGD16_LO
:
6085 case R_PPC64_GOT_TLSGD16_HI
:
6086 case R_PPC64_GOT_TLSGD16_HA
:
6087 tls_type
= TLS_TLS
| TLS_GD
;
6090 case R_PPC64_GOT_TPREL16_DS
:
6091 case R_PPC64_GOT_TPREL16_LO_DS
:
6092 case R_PPC64_GOT_TPREL16_HI
:
6093 case R_PPC64_GOT_TPREL16_HA
:
6094 tls_type
= TLS_TLS
| TLS_TPREL
;
6097 case R_PPC64_GOT_DTPREL16_DS
:
6098 case R_PPC64_GOT_DTPREL16_LO_DS
:
6099 case R_PPC64_GOT_DTPREL16_HI
:
6100 case R_PPC64_GOT_DTPREL16_HA
:
6101 tls_type
= TLS_TLS
| TLS_DTPREL
;
6105 case R_PPC64_GOT16_DS
:
6106 case R_PPC64_GOT16_HA
:
6107 case R_PPC64_GOT16_HI
:
6108 case R_PPC64_GOT16_LO
:
6109 case R_PPC64_GOT16_LO_DS
:
6112 struct got_entry
*ent
;
6117 ent
= local_got_ents
[r_symndx
];
6119 for (; ent
!= NULL
; ent
= ent
->next
)
6120 if (ent
->addend
== rel
->r_addend
6121 && ent
->owner
== abfd
6122 && ent
->tls_type
== tls_type
)
6126 if (ent
->got
.refcount
> 0)
6127 ent
->got
.refcount
-= 1;
6131 case R_PPC64_PLT16_HA
:
6132 case R_PPC64_PLT16_HI
:
6133 case R_PPC64_PLT16_LO
:
6137 case R_PPC64_REL14_BRNTAKEN
:
6138 case R_PPC64_REL14_BRTAKEN
:
6142 struct plt_entry
*ent
;
6144 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6145 if (ent
->addend
== rel
->r_addend
)
6147 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6148 ent
->plt
.refcount
-= 1;
6159 /* The maximum size of .sfpr. */
6160 #define SFPR_MAX (218*4)
6162 struct sfpr_def_parms
6164 const char name
[12];
6165 unsigned char lo
, hi
;
6166 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6167 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6170 /* Auto-generate _save*, _rest* functions in .sfpr. */
6173 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6175 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6177 size_t len
= strlen (parm
->name
);
6178 bfd_boolean writing
= FALSE
;
6184 memcpy (sym
, parm
->name
, len
);
6187 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6189 struct elf_link_hash_entry
*h
;
6191 sym
[len
+ 0] = i
/ 10 + '0';
6192 sym
[len
+ 1] = i
% 10 + '0';
6193 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6197 h
->root
.type
= bfd_link_hash_defined
;
6198 h
->root
.u
.def
.section
= htab
->sfpr
;
6199 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6202 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6204 if (htab
->sfpr
->contents
== NULL
)
6206 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6207 if (htab
->sfpr
->contents
== NULL
)
6213 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6215 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6217 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6218 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6226 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6228 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6233 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6235 p
= savegpr0 (abfd
, p
, r
);
6236 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6238 bfd_put_32 (abfd
, BLR
, p
);
6243 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6245 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6250 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6252 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6254 p
= restgpr0 (abfd
, p
, r
);
6255 bfd_put_32 (abfd
, MTLR_R0
, p
);
6259 p
= restgpr0 (abfd
, p
, 30);
6260 p
= restgpr0 (abfd
, p
, 31);
6262 bfd_put_32 (abfd
, BLR
, p
);
6267 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6269 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6274 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6276 p
= savegpr1 (abfd
, p
, r
);
6277 bfd_put_32 (abfd
, BLR
, p
);
6282 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6284 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6289 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6291 p
= restgpr1 (abfd
, p
, r
);
6292 bfd_put_32 (abfd
, BLR
, p
);
6297 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6299 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6304 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6306 p
= savefpr (abfd
, p
, r
);
6307 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6309 bfd_put_32 (abfd
, BLR
, p
);
6314 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6316 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6321 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6323 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6325 p
= restfpr (abfd
, p
, r
);
6326 bfd_put_32 (abfd
, MTLR_R0
, p
);
6330 p
= restfpr (abfd
, p
, 30);
6331 p
= restfpr (abfd
, p
, 31);
6333 bfd_put_32 (abfd
, BLR
, p
);
6338 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6340 p
= savefpr (abfd
, p
, r
);
6341 bfd_put_32 (abfd
, BLR
, p
);
6346 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6348 p
= restfpr (abfd
, p
, r
);
6349 bfd_put_32 (abfd
, BLR
, p
);
6354 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6356 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6358 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6363 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6365 p
= savevr (abfd
, p
, r
);
6366 bfd_put_32 (abfd
, BLR
, p
);
6371 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6373 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6375 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6380 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6382 p
= restvr (abfd
, p
, r
);
6383 bfd_put_32 (abfd
, BLR
, p
);
6387 /* Called via elf_link_hash_traverse to transfer dynamic linking
6388 information on function code symbol entries to their corresponding
6389 function descriptor symbol entries. */
6392 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6394 struct bfd_link_info
*info
;
6395 struct ppc_link_hash_table
*htab
;
6396 struct plt_entry
*ent
;
6397 struct ppc_link_hash_entry
*fh
;
6398 struct ppc_link_hash_entry
*fdh
;
6399 bfd_boolean force_local
;
6401 fh
= (struct ppc_link_hash_entry
*) h
;
6402 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6406 htab
= ppc_hash_table (info
);
6410 /* Resolve undefined references to dot-symbols as the value
6411 in the function descriptor, if we have one in a regular object.
6412 This is to satisfy cases like ".quad .foo". Calls to functions
6413 in dynamic objects are handled elsewhere. */
6414 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6415 && fh
->was_undefined
6416 && (fdh
= defined_func_desc (fh
)) != NULL
6417 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6418 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6419 fdh
->elf
.root
.u
.def
.value
,
6420 &fh
->elf
.root
.u
.def
.section
,
6421 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6423 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6424 fh
->elf
.forced_local
= 1;
6425 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6426 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6429 /* If this is a function code symbol, transfer dynamic linking
6430 information to the function descriptor symbol. */
6434 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6435 if (ent
->plt
.refcount
> 0)
6438 || fh
->elf
.root
.root
.string
[0] != '.'
6439 || fh
->elf
.root
.root
.string
[1] == '\0')
6442 /* Find the corresponding function descriptor symbol. Create it
6443 as undefined if necessary. */
6445 fdh
= lookup_fdh (fh
, htab
);
6447 && !info
->executable
6448 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6449 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6451 fdh
= make_fdh (info
, fh
);
6456 /* Fake function descriptors are made undefweak. If the function
6457 code symbol is strong undefined, make the fake sym the same.
6458 If the function code symbol is defined, then force the fake
6459 descriptor local; We can't support overriding of symbols in a
6460 shared library on a fake descriptor. */
6464 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6466 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6468 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6469 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6471 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6472 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6474 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6479 && !fdh
->elf
.forced_local
6480 && (!info
->executable
6481 || fdh
->elf
.def_dynamic
6482 || fdh
->elf
.ref_dynamic
6483 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6484 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6486 if (fdh
->elf
.dynindx
== -1)
6487 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6489 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6490 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6491 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6492 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6493 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6495 move_plt_plist (fh
, fdh
);
6496 fdh
->elf
.needs_plt
= 1;
6498 fdh
->is_func_descriptor
= 1;
6503 /* Now that the info is on the function descriptor, clear the
6504 function code sym info. Any function code syms for which we
6505 don't have a definition in a regular file, we force local.
6506 This prevents a shared library from exporting syms that have
6507 been imported from another library. Function code syms that
6508 are really in the library we must leave global to prevent the
6509 linker dragging in a definition from a static library. */
6510 force_local
= (!fh
->elf
.def_regular
6512 || !fdh
->elf
.def_regular
6513 || fdh
->elf
.forced_local
);
6514 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6519 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6520 this hook to a) provide some gcc support functions, and b) transfer
6521 dynamic linking information gathered so far on function code symbol
6522 entries, to their corresponding function descriptor symbol entries. */
6525 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6526 struct bfd_link_info
*info
)
6528 struct ppc_link_hash_table
*htab
;
6530 static const struct sfpr_def_parms funcs
[] =
6532 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6533 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6534 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6535 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6536 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6537 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6538 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6539 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6540 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6541 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6542 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6543 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6546 htab
= ppc_hash_table (info
);
6550 if (!info
->relocatable
6551 && htab
->elf
.hgot
!= NULL
)
6552 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6554 if (htab
->sfpr
== NULL
)
6555 /* We don't have any relocs. */
6558 /* Provide any missing _save* and _rest* functions. */
6559 htab
->sfpr
->size
= 0;
6560 if (!info
->relocatable
)
6561 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6562 if (!sfpr_define (info
, &funcs
[i
]))
6565 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6567 if (htab
->sfpr
->size
== 0)
6568 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6573 /* Adjust a symbol defined by a dynamic object and referenced by a
6574 regular object. The current definition is in some section of the
6575 dynamic object, but we're not including those sections. We have to
6576 change the definition to something the rest of the link can
6580 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6581 struct elf_link_hash_entry
*h
)
6583 struct ppc_link_hash_table
*htab
;
6586 htab
= ppc_hash_table (info
);
6590 /* Deal with function syms. */
6591 if (h
->type
== STT_FUNC
6592 || h
->type
== STT_GNU_IFUNC
6595 /* Clear procedure linkage table information for any symbol that
6596 won't need a .plt entry. */
6597 struct plt_entry
*ent
;
6598 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6599 if (ent
->plt
.refcount
> 0)
6602 || (h
->type
!= STT_GNU_IFUNC
6603 && (SYMBOL_CALLS_LOCAL (info
, h
)
6604 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6605 && h
->root
.type
== bfd_link_hash_undefweak
))))
6607 h
->plt
.plist
= NULL
;
6612 h
->plt
.plist
= NULL
;
6614 /* If this is a weak symbol, and there is a real definition, the
6615 processor independent code will have arranged for us to see the
6616 real definition first, and we can just use the same value. */
6617 if (h
->u
.weakdef
!= NULL
)
6619 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6620 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6621 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6622 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6623 if (ELIMINATE_COPY_RELOCS
)
6624 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6628 /* If we are creating a shared library, we must presume that the
6629 only references to the symbol are via the global offset table.
6630 For such cases we need not do anything here; the relocations will
6631 be handled correctly by relocate_section. */
6635 /* If there are no references to this symbol that do not use the
6636 GOT, we don't need to generate a copy reloc. */
6637 if (!h
->non_got_ref
)
6640 /* Don't generate a copy reloc for symbols defined in the executable. */
6641 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6644 if (ELIMINATE_COPY_RELOCS
)
6646 struct ppc_link_hash_entry
* eh
;
6647 struct elf_dyn_relocs
*p
;
6649 eh
= (struct ppc_link_hash_entry
*) h
;
6650 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6652 s
= p
->sec
->output_section
;
6653 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6657 /* If we didn't find any dynamic relocs in read-only sections, then
6658 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6666 if (h
->plt
.plist
!= NULL
)
6668 /* We should never get here, but unfortunately there are versions
6669 of gcc out there that improperly (for this ABI) put initialized
6670 function pointers, vtable refs and suchlike in read-only
6671 sections. Allow them to proceed, but warn that this might
6672 break at runtime. */
6673 info
->callbacks
->einfo
6674 (_("%P: copy reloc against `%T' requires lazy plt linking; "
6675 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6676 h
->root
.root
.string
);
6679 /* This is a reference to a symbol defined by a dynamic object which
6680 is not a function. */
6682 /* We must allocate the symbol in our .dynbss section, which will
6683 become part of the .bss section of the executable. There will be
6684 an entry for this symbol in the .dynsym section. The dynamic
6685 object will contain position independent code, so all references
6686 from the dynamic object to this symbol will go through the global
6687 offset table. The dynamic linker will use the .dynsym entry to
6688 determine the address it must put in the global offset table, so
6689 both the dynamic object and the regular object will refer to the
6690 same memory location for the variable. */
6692 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6693 to copy the initial value out of the dynamic object and into the
6694 runtime process image. We need to remember the offset into the
6695 .rela.bss section we are going to use. */
6696 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
6698 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6704 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6707 /* If given a function descriptor symbol, hide both the function code
6708 sym and the descriptor. */
6710 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6711 struct elf_link_hash_entry
*h
,
6712 bfd_boolean force_local
)
6714 struct ppc_link_hash_entry
*eh
;
6715 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6717 eh
= (struct ppc_link_hash_entry
*) h
;
6718 if (eh
->is_func_descriptor
)
6720 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6725 struct ppc_link_hash_table
*htab
;
6728 /* We aren't supposed to use alloca in BFD because on
6729 systems which do not have alloca the version in libiberty
6730 calls xmalloc, which might cause the program to crash
6731 when it runs out of memory. This function doesn't have a
6732 return status, so there's no way to gracefully return an
6733 error. So cheat. We know that string[-1] can be safely
6734 accessed; It's either a string in an ELF string table,
6735 or allocated in an objalloc structure. */
6737 p
= eh
->elf
.root
.root
.string
- 1;
6740 htab
= ppc_hash_table (info
);
6744 fh
= (struct ppc_link_hash_entry
*)
6745 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6748 /* Unfortunately, if it so happens that the string we were
6749 looking for was allocated immediately before this string,
6750 then we overwrote the string terminator. That's the only
6751 reason the lookup should fail. */
6754 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6755 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6757 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6758 fh
= (struct ppc_link_hash_entry
*)
6759 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6768 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6773 get_sym_h (struct elf_link_hash_entry
**hp
,
6774 Elf_Internal_Sym
**symp
,
6776 unsigned char **tls_maskp
,
6777 Elf_Internal_Sym
**locsymsp
,
6778 unsigned long r_symndx
,
6781 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6783 if (r_symndx
>= symtab_hdr
->sh_info
)
6785 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6786 struct elf_link_hash_entry
*h
;
6788 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6789 h
= elf_follow_link (h
);
6797 if (symsecp
!= NULL
)
6799 asection
*symsec
= NULL
;
6800 if (h
->root
.type
== bfd_link_hash_defined
6801 || h
->root
.type
== bfd_link_hash_defweak
)
6802 symsec
= h
->root
.u
.def
.section
;
6806 if (tls_maskp
!= NULL
)
6808 struct ppc_link_hash_entry
*eh
;
6810 eh
= (struct ppc_link_hash_entry
*) h
;
6811 *tls_maskp
= &eh
->tls_mask
;
6816 Elf_Internal_Sym
*sym
;
6817 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6819 if (locsyms
== NULL
)
6821 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6822 if (locsyms
== NULL
)
6823 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6824 symtab_hdr
->sh_info
,
6825 0, NULL
, NULL
, NULL
);
6826 if (locsyms
== NULL
)
6828 *locsymsp
= locsyms
;
6830 sym
= locsyms
+ r_symndx
;
6838 if (symsecp
!= NULL
)
6839 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6841 if (tls_maskp
!= NULL
)
6843 struct got_entry
**lgot_ents
;
6844 unsigned char *tls_mask
;
6847 lgot_ents
= elf_local_got_ents (ibfd
);
6848 if (lgot_ents
!= NULL
)
6850 struct plt_entry
**local_plt
= (struct plt_entry
**)
6851 (lgot_ents
+ symtab_hdr
->sh_info
);
6852 unsigned char *lgot_masks
= (unsigned char *)
6853 (local_plt
+ symtab_hdr
->sh_info
);
6854 tls_mask
= &lgot_masks
[r_symndx
];
6856 *tls_maskp
= tls_mask
;
6862 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6863 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6864 type suitable for optimization, and 1 otherwise. */
6867 get_tls_mask (unsigned char **tls_maskp
,
6868 unsigned long *toc_symndx
,
6869 bfd_vma
*toc_addend
,
6870 Elf_Internal_Sym
**locsymsp
,
6871 const Elf_Internal_Rela
*rel
,
6874 unsigned long r_symndx
;
6876 struct elf_link_hash_entry
*h
;
6877 Elf_Internal_Sym
*sym
;
6881 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6882 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6885 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6887 || ppc64_elf_section_data (sec
) == NULL
6888 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6891 /* Look inside a TOC section too. */
6894 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6895 off
= h
->root
.u
.def
.value
;
6898 off
= sym
->st_value
;
6899 off
+= rel
->r_addend
;
6900 BFD_ASSERT (off
% 8 == 0);
6901 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6902 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6903 if (toc_symndx
!= NULL
)
6904 *toc_symndx
= r_symndx
;
6905 if (toc_addend
!= NULL
)
6906 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6907 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6909 if ((h
== NULL
|| is_static_defined (h
))
6910 && (next_r
== -1 || next_r
== -2))
6915 /* Find (or create) an entry in the tocsave hash table. */
6917 static struct tocsave_entry
*
6918 tocsave_find (struct ppc_link_hash_table
*htab
,
6919 enum insert_option insert
,
6920 Elf_Internal_Sym
**local_syms
,
6921 const Elf_Internal_Rela
*irela
,
6924 unsigned long r_indx
;
6925 struct elf_link_hash_entry
*h
;
6926 Elf_Internal_Sym
*sym
;
6927 struct tocsave_entry ent
, *p
;
6929 struct tocsave_entry
**slot
;
6931 r_indx
= ELF64_R_SYM (irela
->r_info
);
6932 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
6934 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
6936 (*_bfd_error_handler
)
6937 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6942 ent
.offset
= h
->root
.u
.def
.value
;
6944 ent
.offset
= sym
->st_value
;
6945 ent
.offset
+= irela
->r_addend
;
6947 hash
= tocsave_htab_hash (&ent
);
6948 slot
= ((struct tocsave_entry
**)
6949 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
6955 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
6964 /* Adjust all global syms defined in opd sections. In gcc generated
6965 code for the old ABI, these will already have been done. */
6968 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6970 struct ppc_link_hash_entry
*eh
;
6972 struct _opd_sec_data
*opd
;
6974 if (h
->root
.type
== bfd_link_hash_indirect
)
6977 if (h
->root
.type
!= bfd_link_hash_defined
6978 && h
->root
.type
!= bfd_link_hash_defweak
)
6981 eh
= (struct ppc_link_hash_entry
*) h
;
6982 if (eh
->adjust_done
)
6985 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6986 opd
= get_opd_info (sym_sec
);
6987 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6989 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6992 /* This entry has been deleted. */
6993 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6996 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6997 if (discarded_section (dsec
))
6999 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7003 eh
->elf
.root
.u
.def
.value
= 0;
7004 eh
->elf
.root
.u
.def
.section
= dsec
;
7007 eh
->elf
.root
.u
.def
.value
+= adjust
;
7008 eh
->adjust_done
= 1;
7013 /* Handles decrementing dynamic reloc counts for the reloc specified by
7014 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7015 have already been determined. */
7018 dec_dynrel_count (bfd_vma r_info
,
7020 struct bfd_link_info
*info
,
7021 Elf_Internal_Sym
**local_syms
,
7022 struct elf_link_hash_entry
*h
,
7023 Elf_Internal_Sym
*sym
)
7025 enum elf_ppc64_reloc_type r_type
;
7026 asection
*sym_sec
= NULL
;
7028 /* Can this reloc be dynamic? This switch, and later tests here
7029 should be kept in sync with the code in check_relocs. */
7030 r_type
= ELF64_R_TYPE (r_info
);
7036 case R_PPC64_TPREL16
:
7037 case R_PPC64_TPREL16_LO
:
7038 case R_PPC64_TPREL16_HI
:
7039 case R_PPC64_TPREL16_HA
:
7040 case R_PPC64_TPREL16_DS
:
7041 case R_PPC64_TPREL16_LO_DS
:
7042 case R_PPC64_TPREL16_HIGHER
:
7043 case R_PPC64_TPREL16_HIGHERA
:
7044 case R_PPC64_TPREL16_HIGHEST
:
7045 case R_PPC64_TPREL16_HIGHESTA
:
7049 case R_PPC64_TPREL64
:
7050 case R_PPC64_DTPMOD64
:
7051 case R_PPC64_DTPREL64
:
7052 case R_PPC64_ADDR64
:
7056 case R_PPC64_ADDR14
:
7057 case R_PPC64_ADDR14_BRNTAKEN
:
7058 case R_PPC64_ADDR14_BRTAKEN
:
7059 case R_PPC64_ADDR16
:
7060 case R_PPC64_ADDR16_DS
:
7061 case R_PPC64_ADDR16_HA
:
7062 case R_PPC64_ADDR16_HI
:
7063 case R_PPC64_ADDR16_HIGHER
:
7064 case R_PPC64_ADDR16_HIGHERA
:
7065 case R_PPC64_ADDR16_HIGHEST
:
7066 case R_PPC64_ADDR16_HIGHESTA
:
7067 case R_PPC64_ADDR16_LO
:
7068 case R_PPC64_ADDR16_LO_DS
:
7069 case R_PPC64_ADDR24
:
7070 case R_PPC64_ADDR32
:
7071 case R_PPC64_UADDR16
:
7072 case R_PPC64_UADDR32
:
7073 case R_PPC64_UADDR64
:
7078 if (local_syms
!= NULL
)
7080 unsigned long r_symndx
;
7081 bfd
*ibfd
= sec
->owner
;
7083 r_symndx
= ELF64_R_SYM (r_info
);
7084 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7089 && (must_be_dyn_reloc (info
, r_type
)
7091 && (!SYMBOLIC_BIND (info
, h
)
7092 || h
->root
.type
== bfd_link_hash_defweak
7093 || !h
->def_regular
))))
7094 || (ELIMINATE_COPY_RELOCS
7097 && (h
->root
.type
== bfd_link_hash_defweak
7098 || !h
->def_regular
)))
7105 struct elf_dyn_relocs
*p
;
7106 struct elf_dyn_relocs
**pp
;
7107 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7109 /* elf_gc_sweep may have already removed all dyn relocs associated
7110 with local syms for a given section. Also, symbol flags are
7111 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7112 report a dynreloc miscount. */
7113 if (*pp
== NULL
&& info
->gc_sections
)
7116 while ((p
= *pp
) != NULL
)
7120 if (!must_be_dyn_reloc (info
, r_type
))
7132 struct ppc_dyn_relocs
*p
;
7133 struct ppc_dyn_relocs
**pp
;
7135 bfd_boolean is_ifunc
;
7137 if (local_syms
== NULL
)
7138 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7139 if (sym_sec
== NULL
)
7142 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7143 pp
= (struct ppc_dyn_relocs
**) vpp
;
7145 if (*pp
== NULL
&& info
->gc_sections
)
7148 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7149 while ((p
= *pp
) != NULL
)
7151 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7162 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7164 bfd_set_error (bfd_error_bad_value
);
7168 /* Remove unused Official Procedure Descriptor entries. Currently we
7169 only remove those associated with functions in discarded link-once
7170 sections, or weakly defined functions that have been overridden. It
7171 would be possible to remove many more entries for statically linked
7175 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
7178 bfd_boolean some_edited
= FALSE
;
7179 asection
*need_pad
= NULL
;
7181 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7184 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7185 Elf_Internal_Shdr
*symtab_hdr
;
7186 Elf_Internal_Sym
*local_syms
;
7188 struct _opd_sec_data
*opd
;
7189 bfd_boolean need_edit
, add_aux_fields
;
7190 bfd_size_type cnt_16b
= 0;
7192 if (!is_ppc64_elf (ibfd
))
7195 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7196 if (sec
== NULL
|| sec
->size
== 0)
7199 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7202 if (sec
->output_section
== bfd_abs_section_ptr
)
7205 /* Look through the section relocs. */
7206 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7210 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7212 /* Read the relocations. */
7213 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7215 if (relstart
== NULL
)
7218 /* First run through the relocs to check they are sane, and to
7219 determine whether we need to edit this opd section. */
7223 relend
= relstart
+ sec
->reloc_count
;
7224 for (rel
= relstart
; rel
< relend
; )
7226 enum elf_ppc64_reloc_type r_type
;
7227 unsigned long r_symndx
;
7229 struct elf_link_hash_entry
*h
;
7230 Elf_Internal_Sym
*sym
;
7232 /* .opd contains a regular array of 16 or 24 byte entries. We're
7233 only interested in the reloc pointing to a function entry
7235 if (rel
->r_offset
!= offset
7236 || rel
+ 1 >= relend
7237 || (rel
+ 1)->r_offset
!= offset
+ 8)
7239 /* If someone messes with .opd alignment then after a
7240 "ld -r" we might have padding in the middle of .opd.
7241 Also, there's nothing to prevent someone putting
7242 something silly in .opd with the assembler. No .opd
7243 optimization for them! */
7245 (*_bfd_error_handler
)
7246 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7251 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7252 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7254 (*_bfd_error_handler
)
7255 (_("%B: unexpected reloc type %u in .opd section"),
7261 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7262 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7266 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7268 const char *sym_name
;
7270 sym_name
= h
->root
.root
.string
;
7272 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7275 (*_bfd_error_handler
)
7276 (_("%B: undefined sym `%s' in .opd section"),
7282 /* opd entries are always for functions defined in the
7283 current input bfd. If the symbol isn't defined in the
7284 input bfd, then we won't be using the function in this
7285 bfd; It must be defined in a linkonce section in another
7286 bfd, or is weak. It's also possible that we are
7287 discarding the function due to a linker script /DISCARD/,
7288 which we test for via the output_section. */
7289 if (sym_sec
->owner
!= ibfd
7290 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7295 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7297 if (sec
->size
== offset
+ 24)
7302 if (rel
== relend
&& sec
->size
== offset
+ 16)
7310 if (rel
->r_offset
== offset
+ 24)
7312 else if (rel
->r_offset
!= offset
+ 16)
7314 else if (rel
+ 1 < relend
7315 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7316 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7321 else if (rel
+ 2 < relend
7322 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7323 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7332 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7334 if (need_edit
|| add_aux_fields
)
7336 Elf_Internal_Rela
*write_rel
;
7337 Elf_Internal_Shdr
*rel_hdr
;
7338 bfd_byte
*rptr
, *wptr
;
7339 bfd_byte
*new_contents
;
7344 new_contents
= NULL
;
7345 amt
= sec
->size
* sizeof (long) / 8;
7346 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7347 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7348 if (opd
->adjust
== NULL
)
7350 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7352 /* This seems a waste of time as input .opd sections are all
7353 zeros as generated by gcc, but I suppose there's no reason
7354 this will always be so. We might start putting something in
7355 the third word of .opd entries. */
7356 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7359 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7364 if (local_syms
!= NULL
7365 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7367 if (elf_section_data (sec
)->relocs
!= relstart
)
7371 sec
->contents
= loc
;
7372 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7375 elf_section_data (sec
)->relocs
= relstart
;
7377 new_contents
= sec
->contents
;
7380 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7381 if (new_contents
== NULL
)
7385 wptr
= new_contents
;
7386 rptr
= sec
->contents
;
7388 write_rel
= relstart
;
7392 for (rel
= relstart
; rel
< relend
; rel
++)
7394 unsigned long r_symndx
;
7396 struct elf_link_hash_entry
*h
;
7397 Elf_Internal_Sym
*sym
;
7399 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7400 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7404 if (rel
->r_offset
== offset
)
7406 struct ppc_link_hash_entry
*fdh
= NULL
;
7408 /* See if the .opd entry is full 24 byte or
7409 16 byte (with fd_aux entry overlapped with next
7412 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7413 || (rel
+ 3 < relend
7414 && rel
[2].r_offset
== offset
+ 16
7415 && rel
[3].r_offset
== offset
+ 24
7416 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7417 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7421 && h
->root
.root
.string
[0] == '.')
7423 struct ppc_link_hash_table
*htab
;
7425 htab
= ppc_hash_table (info
);
7427 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7430 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7431 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7435 skip
= (sym_sec
->owner
!= ibfd
7436 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7439 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7441 /* Arrange for the function descriptor sym
7443 fdh
->elf
.root
.u
.def
.value
= 0;
7444 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7446 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7450 /* We'll be keeping this opd entry. */
7454 /* Redefine the function descriptor symbol to
7455 this location in the opd section. It is
7456 necessary to update the value here rather
7457 than using an array of adjustments as we do
7458 for local symbols, because various places
7459 in the generic ELF code use the value
7460 stored in u.def.value. */
7461 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7462 fdh
->adjust_done
= 1;
7465 /* Local syms are a bit tricky. We could
7466 tweak them as they can be cached, but
7467 we'd need to look through the local syms
7468 for the function descriptor sym which we
7469 don't have at the moment. So keep an
7470 array of adjustments. */
7471 opd
->adjust
[rel
->r_offset
/ 8]
7472 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7475 memcpy (wptr
, rptr
, opd_ent_size
);
7476 wptr
+= opd_ent_size
;
7477 if (add_aux_fields
&& opd_ent_size
== 16)
7479 memset (wptr
, '\0', 8);
7483 rptr
+= opd_ent_size
;
7484 offset
+= opd_ent_size
;
7490 && !info
->relocatable
7491 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7497 /* We need to adjust any reloc offsets to point to the
7498 new opd entries. While we're at it, we may as well
7499 remove redundant relocs. */
7500 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7501 if (write_rel
!= rel
)
7502 memcpy (write_rel
, rel
, sizeof (*rel
));
7507 sec
->size
= wptr
- new_contents
;
7508 sec
->reloc_count
= write_rel
- relstart
;
7511 free (sec
->contents
);
7512 sec
->contents
= new_contents
;
7515 /* Fudge the header size too, as this is used later in
7516 elf_bfd_final_link if we are emitting relocs. */
7517 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7518 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7521 else if (elf_section_data (sec
)->relocs
!= relstart
)
7524 if (local_syms
!= NULL
7525 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7527 if (!info
->keep_memory
)
7530 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7535 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7537 /* If we are doing a final link and the last .opd entry is just 16 byte
7538 long, add a 8 byte padding after it. */
7539 if (need_pad
!= NULL
&& !info
->relocatable
)
7543 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7545 BFD_ASSERT (need_pad
->size
> 0);
7547 p
= bfd_malloc (need_pad
->size
+ 8);
7551 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7552 p
, 0, need_pad
->size
))
7555 need_pad
->contents
= p
;
7556 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7560 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7564 need_pad
->contents
= p
;
7567 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7568 need_pad
->size
+= 8;
7574 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7577 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7578 int no_tls_get_addr_opt
,
7581 struct ppc_link_hash_table
*htab
;
7583 htab
= ppc_hash_table (info
);
7588 htab
->do_multi_toc
= 0;
7589 else if (!htab
->do_multi_toc
)
7592 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7593 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7594 FALSE
, FALSE
, TRUE
));
7595 /* Move dynamic linking info to the function descriptor sym. */
7596 if (htab
->tls_get_addr
!= NULL
)
7597 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7598 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7599 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7600 FALSE
, FALSE
, TRUE
));
7601 if (!no_tls_get_addr_opt
)
7603 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7605 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7606 FALSE
, FALSE
, TRUE
);
7608 func_desc_adjust (opt
, info
);
7609 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7610 FALSE
, FALSE
, TRUE
);
7612 && (opt_fd
->root
.type
== bfd_link_hash_defined
7613 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7615 /* If glibc supports an optimized __tls_get_addr call stub,
7616 signalled by the presence of __tls_get_addr_opt, and we'll
7617 be calling __tls_get_addr via a plt call stub, then
7618 make __tls_get_addr point to __tls_get_addr_opt. */
7619 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7620 if (htab
->elf
.dynamic_sections_created
7622 && (tga_fd
->type
== STT_FUNC
7623 || tga_fd
->needs_plt
)
7624 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7625 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7626 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7628 struct plt_entry
*ent
;
7630 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7631 if (ent
->plt
.refcount
> 0)
7635 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7636 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7637 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7638 if (opt_fd
->dynindx
!= -1)
7640 /* Use __tls_get_addr_opt in dynamic relocations. */
7641 opt_fd
->dynindx
= -1;
7642 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7643 opt_fd
->dynstr_index
);
7644 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7647 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7648 tga
= &htab
->tls_get_addr
->elf
;
7649 if (opt
!= NULL
&& tga
!= NULL
)
7651 tga
->root
.type
= bfd_link_hash_indirect
;
7652 tga
->root
.u
.i
.link
= &opt
->root
;
7653 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7654 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7656 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7658 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7659 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7660 if (htab
->tls_get_addr
!= NULL
)
7662 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7663 htab
->tls_get_addr
->is_func
= 1;
7669 no_tls_get_addr_opt
= TRUE
;
7671 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7672 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7675 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7679 branch_reloc_hash_match (const bfd
*ibfd
,
7680 const Elf_Internal_Rela
*rel
,
7681 const struct ppc_link_hash_entry
*hash1
,
7682 const struct ppc_link_hash_entry
*hash2
)
7684 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7685 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7686 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7688 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7690 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7691 struct elf_link_hash_entry
*h
;
7693 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7694 h
= elf_follow_link (h
);
7695 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7701 /* Run through all the TLS relocs looking for optimization
7702 opportunities. The linker has been hacked (see ppc64elf.em) to do
7703 a preliminary section layout so that we know the TLS segment
7704 offsets. We can't optimize earlier because some optimizations need
7705 to know the tp offset, and we need to optimize before allocating
7706 dynamic relocations. */
7709 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7713 struct ppc_link_hash_table
*htab
;
7714 unsigned char *toc_ref
;
7717 if (info
->relocatable
|| !info
->executable
)
7720 htab
= ppc_hash_table (info
);
7724 /* Make two passes over the relocs. On the first pass, mark toc
7725 entries involved with tls relocs, and check that tls relocs
7726 involved in setting up a tls_get_addr call are indeed followed by
7727 such a call. If they are not, we can't do any tls optimization.
7728 On the second pass twiddle tls_mask flags to notify
7729 relocate_section that optimization can be done, and adjust got
7730 and plt refcounts. */
7732 for (pass
= 0; pass
< 2; ++pass
)
7733 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7735 Elf_Internal_Sym
*locsyms
= NULL
;
7736 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7738 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7739 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7741 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7742 bfd_boolean found_tls_get_addr_arg
= 0;
7744 /* Read the relocations. */
7745 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7747 if (relstart
== NULL
)
7750 relend
= relstart
+ sec
->reloc_count
;
7751 for (rel
= relstart
; rel
< relend
; rel
++)
7753 enum elf_ppc64_reloc_type r_type
;
7754 unsigned long r_symndx
;
7755 struct elf_link_hash_entry
*h
;
7756 Elf_Internal_Sym
*sym
;
7758 unsigned char *tls_mask
;
7759 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7761 bfd_boolean ok_tprel
, is_local
;
7762 long toc_ref_index
= 0;
7763 int expecting_tls_get_addr
= 0;
7764 bfd_boolean ret
= FALSE
;
7766 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7767 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7771 if (elf_section_data (sec
)->relocs
!= relstart
)
7773 if (toc_ref
!= NULL
)
7776 && (elf_symtab_hdr (ibfd
).contents
7777 != (unsigned char *) locsyms
))
7784 if (h
->root
.type
== bfd_link_hash_defined
7785 || h
->root
.type
== bfd_link_hash_defweak
)
7786 value
= h
->root
.u
.def
.value
;
7787 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7791 found_tls_get_addr_arg
= 0;
7796 /* Symbols referenced by TLS relocs must be of type
7797 STT_TLS. So no need for .opd local sym adjust. */
7798 value
= sym
->st_value
;
7807 && h
->root
.type
== bfd_link_hash_undefweak
)
7811 value
+= sym_sec
->output_offset
;
7812 value
+= sym_sec
->output_section
->vma
;
7813 value
-= htab
->elf
.tls_sec
->vma
;
7814 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7815 < (bfd_vma
) 1 << 32);
7819 r_type
= ELF64_R_TYPE (rel
->r_info
);
7820 /* If this section has old-style __tls_get_addr calls
7821 without marker relocs, then check that each
7822 __tls_get_addr call reloc is preceded by a reloc
7823 that conceivably belongs to the __tls_get_addr arg
7824 setup insn. If we don't find matching arg setup
7825 relocs, don't do any tls optimization. */
7827 && sec
->has_tls_get_addr_call
7829 && (h
== &htab
->tls_get_addr
->elf
7830 || h
== &htab
->tls_get_addr_fd
->elf
)
7831 && !found_tls_get_addr_arg
7832 && is_branch_reloc (r_type
))
7834 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
7835 "TLS optimization disabled\n"),
7836 ibfd
, sec
, rel
->r_offset
);
7841 found_tls_get_addr_arg
= 0;
7844 case R_PPC64_GOT_TLSLD16
:
7845 case R_PPC64_GOT_TLSLD16_LO
:
7846 expecting_tls_get_addr
= 1;
7847 found_tls_get_addr_arg
= 1;
7850 case R_PPC64_GOT_TLSLD16_HI
:
7851 case R_PPC64_GOT_TLSLD16_HA
:
7852 /* These relocs should never be against a symbol
7853 defined in a shared lib. Leave them alone if
7854 that turns out to be the case. */
7861 tls_type
= TLS_TLS
| TLS_LD
;
7864 case R_PPC64_GOT_TLSGD16
:
7865 case R_PPC64_GOT_TLSGD16_LO
:
7866 expecting_tls_get_addr
= 1;
7867 found_tls_get_addr_arg
= 1;
7870 case R_PPC64_GOT_TLSGD16_HI
:
7871 case R_PPC64_GOT_TLSGD16_HA
:
7877 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7879 tls_type
= TLS_TLS
| TLS_GD
;
7882 case R_PPC64_GOT_TPREL16_DS
:
7883 case R_PPC64_GOT_TPREL16_LO_DS
:
7884 case R_PPC64_GOT_TPREL16_HI
:
7885 case R_PPC64_GOT_TPREL16_HA
:
7890 tls_clear
= TLS_TPREL
;
7891 tls_type
= TLS_TLS
| TLS_TPREL
;
7898 found_tls_get_addr_arg
= 1;
7903 case R_PPC64_TOC16_LO
:
7904 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7907 /* Mark this toc entry as referenced by a TLS
7908 code sequence. We can do that now in the
7909 case of R_PPC64_TLS, and after checking for
7910 tls_get_addr for the TOC16 relocs. */
7911 if (toc_ref
== NULL
)
7912 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7913 if (toc_ref
== NULL
)
7917 value
= h
->root
.u
.def
.value
;
7919 value
= sym
->st_value
;
7920 value
+= rel
->r_addend
;
7921 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7922 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7923 if (r_type
== R_PPC64_TLS
7924 || r_type
== R_PPC64_TLSGD
7925 || r_type
== R_PPC64_TLSLD
)
7927 toc_ref
[toc_ref_index
] = 1;
7931 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7936 expecting_tls_get_addr
= 2;
7939 case R_PPC64_TPREL64
:
7943 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7948 tls_set
= TLS_EXPLICIT
;
7949 tls_clear
= TLS_TPREL
;
7954 case R_PPC64_DTPMOD64
:
7958 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7960 if (rel
+ 1 < relend
7962 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7963 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7967 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7970 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7979 tls_set
= TLS_EXPLICIT
;
7990 if (!expecting_tls_get_addr
7991 || !sec
->has_tls_get_addr_call
)
7994 if (rel
+ 1 < relend
7995 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7997 htab
->tls_get_addr_fd
))
7999 if (expecting_tls_get_addr
== 2)
8001 /* Check for toc tls entries. */
8002 unsigned char *toc_tls
;
8005 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8010 if (toc_tls
!= NULL
)
8012 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8013 found_tls_get_addr_arg
= 1;
8015 toc_ref
[toc_ref_index
] = 1;
8021 if (expecting_tls_get_addr
!= 1)
8024 /* Uh oh, we didn't find the expected call. We
8025 could just mark this symbol to exclude it
8026 from tls optimization but it's safer to skip
8027 the entire optimization. */
8028 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8029 "TLS optimization disabled\n"),
8030 ibfd
, sec
, rel
->r_offset
);
8035 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8037 struct plt_entry
*ent
;
8038 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8041 if (ent
->addend
== 0)
8043 if (ent
->plt
.refcount
> 0)
8045 ent
->plt
.refcount
-= 1;
8046 expecting_tls_get_addr
= 0;
8052 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8054 struct plt_entry
*ent
;
8055 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8058 if (ent
->addend
== 0)
8060 if (ent
->plt
.refcount
> 0)
8061 ent
->plt
.refcount
-= 1;
8069 if ((tls_set
& TLS_EXPLICIT
) == 0)
8071 struct got_entry
*ent
;
8073 /* Adjust got entry for this reloc. */
8077 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8079 for (; ent
!= NULL
; ent
= ent
->next
)
8080 if (ent
->addend
== rel
->r_addend
8081 && ent
->owner
== ibfd
8082 && ent
->tls_type
== tls_type
)
8089 /* We managed to get rid of a got entry. */
8090 if (ent
->got
.refcount
> 0)
8091 ent
->got
.refcount
-= 1;
8096 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8097 we'll lose one or two dyn relocs. */
8098 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8102 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8104 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8110 *tls_mask
|= tls_set
;
8111 *tls_mask
&= ~tls_clear
;
8114 if (elf_section_data (sec
)->relocs
!= relstart
)
8119 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8121 if (!info
->keep_memory
)
8124 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8128 if (toc_ref
!= NULL
)
8133 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8134 the values of any global symbols in a toc section that has been
8135 edited. Globals in toc sections should be a rarity, so this function
8136 sets a flag if any are found in toc sections other than the one just
8137 edited, so that futher hash table traversals can be avoided. */
8139 struct adjust_toc_info
8142 unsigned long *skip
;
8143 bfd_boolean global_toc_syms
;
8146 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8149 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8151 struct ppc_link_hash_entry
*eh
;
8152 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8155 if (h
->root
.type
!= bfd_link_hash_defined
8156 && h
->root
.type
!= bfd_link_hash_defweak
)
8159 eh
= (struct ppc_link_hash_entry
*) h
;
8160 if (eh
->adjust_done
)
8163 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8165 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8166 i
= toc_inf
->toc
->rawsize
>> 3;
8168 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8170 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8172 (*_bfd_error_handler
)
8173 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8176 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8177 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8180 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8181 eh
->adjust_done
= 1;
8183 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8184 toc_inf
->global_toc_syms
= TRUE
;
8189 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8192 ok_lo_toc_insn (unsigned int insn
)
8194 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8195 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8196 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8197 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8198 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8199 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8200 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8201 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8202 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8203 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8204 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8205 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8206 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8207 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8208 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8210 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8211 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8212 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8215 /* Examine all relocs referencing .toc sections in order to remove
8216 unused .toc entries. */
8219 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8222 struct adjust_toc_info toc_inf
;
8223 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8225 htab
->do_toc_opt
= 1;
8226 toc_inf
.global_toc_syms
= TRUE
;
8227 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8229 asection
*toc
, *sec
;
8230 Elf_Internal_Shdr
*symtab_hdr
;
8231 Elf_Internal_Sym
*local_syms
;
8232 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8233 unsigned long *skip
, *drop
;
8234 unsigned char *used
;
8235 unsigned char *keep
, last
, some_unused
;
8237 if (!is_ppc64_elf (ibfd
))
8240 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8243 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8244 || discarded_section (toc
))
8249 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8251 /* Look at sections dropped from the final link. */
8254 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8256 if (sec
->reloc_count
== 0
8257 || !discarded_section (sec
)
8258 || get_opd_info (sec
)
8259 || (sec
->flags
& SEC_ALLOC
) == 0
8260 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8263 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8264 if (relstart
== NULL
)
8267 /* Run through the relocs to see which toc entries might be
8269 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8271 enum elf_ppc64_reloc_type r_type
;
8272 unsigned long r_symndx
;
8274 struct elf_link_hash_entry
*h
;
8275 Elf_Internal_Sym
*sym
;
8278 r_type
= ELF64_R_TYPE (rel
->r_info
);
8285 case R_PPC64_TOC16_LO
:
8286 case R_PPC64_TOC16_HI
:
8287 case R_PPC64_TOC16_HA
:
8288 case R_PPC64_TOC16_DS
:
8289 case R_PPC64_TOC16_LO_DS
:
8293 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8294 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8302 val
= h
->root
.u
.def
.value
;
8304 val
= sym
->st_value
;
8305 val
+= rel
->r_addend
;
8307 if (val
>= toc
->size
)
8310 /* Anything in the toc ought to be aligned to 8 bytes.
8311 If not, don't mark as unused. */
8317 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8322 skip
[val
>> 3] = ref_from_discarded
;
8325 if (elf_section_data (sec
)->relocs
!= relstart
)
8329 /* For largetoc loads of address constants, we can convert
8330 . addis rx,2,addr@got@ha
8331 . ld ry,addr@got@l(rx)
8333 . addis rx,2,addr@toc@ha
8334 . addi ry,rx,addr@toc@l
8335 when addr is within 2G of the toc pointer. This then means
8336 that the word storing "addr" in the toc is no longer needed. */
8338 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8339 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8340 && toc
->reloc_count
!= 0)
8342 /* Read toc relocs. */
8343 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8345 if (toc_relocs
== NULL
)
8348 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8350 enum elf_ppc64_reloc_type r_type
;
8351 unsigned long r_symndx
;
8353 struct elf_link_hash_entry
*h
;
8354 Elf_Internal_Sym
*sym
;
8357 r_type
= ELF64_R_TYPE (rel
->r_info
);
8358 if (r_type
!= R_PPC64_ADDR64
)
8361 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8362 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8367 || discarded_section (sym_sec
))
8370 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8375 if (h
->type
== STT_GNU_IFUNC
)
8377 val
= h
->root
.u
.def
.value
;
8381 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8383 val
= sym
->st_value
;
8385 val
+= rel
->r_addend
;
8386 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8388 /* We don't yet know the exact toc pointer value, but we
8389 know it will be somewhere in the toc section. Don't
8390 optimize if the difference from any possible toc
8391 pointer is outside [ff..f80008000, 7fff7fff]. */
8392 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8393 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8396 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8397 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8402 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8407 skip
[rel
->r_offset
>> 3]
8408 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8415 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8419 if (local_syms
!= NULL
8420 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8424 && elf_section_data (sec
)->relocs
!= relstart
)
8426 if (toc_relocs
!= NULL
8427 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8434 /* Now check all kept sections that might reference the toc.
8435 Check the toc itself last. */
8436 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8439 sec
= (sec
== toc
? NULL
8440 : sec
->next
== NULL
? toc
8441 : sec
->next
== toc
&& toc
->next
? toc
->next
8446 if (sec
->reloc_count
== 0
8447 || discarded_section (sec
)
8448 || get_opd_info (sec
)
8449 || (sec
->flags
& SEC_ALLOC
) == 0
8450 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8453 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8455 if (relstart
== NULL
)
8458 /* Mark toc entries referenced as used. */
8462 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8464 enum elf_ppc64_reloc_type r_type
;
8465 unsigned long r_symndx
;
8467 struct elf_link_hash_entry
*h
;
8468 Elf_Internal_Sym
*sym
;
8470 enum {no_check
, check_lo
, check_ha
} insn_check
;
8472 r_type
= ELF64_R_TYPE (rel
->r_info
);
8476 insn_check
= no_check
;
8479 case R_PPC64_GOT_TLSLD16_HA
:
8480 case R_PPC64_GOT_TLSGD16_HA
:
8481 case R_PPC64_GOT_TPREL16_HA
:
8482 case R_PPC64_GOT_DTPREL16_HA
:
8483 case R_PPC64_GOT16_HA
:
8484 case R_PPC64_TOC16_HA
:
8485 insn_check
= check_ha
;
8488 case R_PPC64_GOT_TLSLD16_LO
:
8489 case R_PPC64_GOT_TLSGD16_LO
:
8490 case R_PPC64_GOT_TPREL16_LO_DS
:
8491 case R_PPC64_GOT_DTPREL16_LO_DS
:
8492 case R_PPC64_GOT16_LO
:
8493 case R_PPC64_GOT16_LO_DS
:
8494 case R_PPC64_TOC16_LO
:
8495 case R_PPC64_TOC16_LO_DS
:
8496 insn_check
= check_lo
;
8500 if (insn_check
!= no_check
)
8502 bfd_vma off
= rel
->r_offset
& ~3;
8503 unsigned char buf
[4];
8506 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8511 insn
= bfd_get_32 (ibfd
, buf
);
8512 if (insn_check
== check_lo
8513 ? !ok_lo_toc_insn (insn
)
8514 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8515 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8519 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8520 sprintf (str
, "%#08x", insn
);
8521 info
->callbacks
->einfo
8522 (_("%P: %H: toc optimization is not supported for"
8523 " %s instruction.\n"),
8524 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8531 case R_PPC64_TOC16_LO
:
8532 case R_PPC64_TOC16_HI
:
8533 case R_PPC64_TOC16_HA
:
8534 case R_PPC64_TOC16_DS
:
8535 case R_PPC64_TOC16_LO_DS
:
8536 /* In case we're taking addresses of toc entries. */
8537 case R_PPC64_ADDR64
:
8544 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8545 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8556 val
= h
->root
.u
.def
.value
;
8558 val
= sym
->st_value
;
8559 val
+= rel
->r_addend
;
8561 if (val
>= toc
->size
)
8564 if ((skip
[val
>> 3] & can_optimize
) != 0)
8571 case R_PPC64_TOC16_HA
:
8574 case R_PPC64_TOC16_LO_DS
:
8575 off
= rel
->r_offset
;
8576 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
8577 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
8583 if ((opc
& (0x3f << 2)) == (58u << 2))
8588 /* Wrong sort of reloc, or not a ld. We may
8589 as well clear ref_from_discarded too. */
8596 /* For the toc section, we only mark as used if this
8597 entry itself isn't unused. */
8598 else if ((used
[rel
->r_offset
>> 3]
8599 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
8602 /* Do all the relocs again, to catch reference
8611 if (elf_section_data (sec
)->relocs
!= relstart
)
8615 /* Merge the used and skip arrays. Assume that TOC
8616 doublewords not appearing as either used or unused belong
8617 to to an entry more than one doubleword in size. */
8618 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8619 drop
< skip
+ (toc
->size
+ 7) / 8;
8624 *drop
&= ~ref_from_discarded
;
8625 if ((*drop
& can_optimize
) != 0)
8629 else if ((*drop
& ref_from_discarded
) != 0)
8632 last
= ref_from_discarded
;
8642 bfd_byte
*contents
, *src
;
8644 Elf_Internal_Sym
*sym
;
8645 bfd_boolean local_toc_syms
= FALSE
;
8647 /* Shuffle the toc contents, and at the same time convert the
8648 skip array from booleans into offsets. */
8649 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8652 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8654 for (src
= contents
, off
= 0, drop
= skip
;
8655 src
< contents
+ toc
->size
;
8658 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8663 memcpy (src
- off
, src
, 8);
8667 toc
->rawsize
= toc
->size
;
8668 toc
->size
= src
- contents
- off
;
8670 /* Adjust addends for relocs against the toc section sym,
8671 and optimize any accesses we can. */
8672 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8674 if (sec
->reloc_count
== 0
8675 || discarded_section (sec
))
8678 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8680 if (relstart
== NULL
)
8683 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8685 enum elf_ppc64_reloc_type r_type
;
8686 unsigned long r_symndx
;
8688 struct elf_link_hash_entry
*h
;
8691 r_type
= ELF64_R_TYPE (rel
->r_info
);
8698 case R_PPC64_TOC16_LO
:
8699 case R_PPC64_TOC16_HI
:
8700 case R_PPC64_TOC16_HA
:
8701 case R_PPC64_TOC16_DS
:
8702 case R_PPC64_TOC16_LO_DS
:
8703 case R_PPC64_ADDR64
:
8707 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8708 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8716 val
= h
->root
.u
.def
.value
;
8719 val
= sym
->st_value
;
8721 local_toc_syms
= TRUE
;
8724 val
+= rel
->r_addend
;
8726 if (val
> toc
->rawsize
)
8728 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8730 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8732 Elf_Internal_Rela
*tocrel
8733 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8734 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8738 case R_PPC64_TOC16_HA
:
8739 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8742 case R_PPC64_TOC16_LO_DS
:
8743 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8747 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
8749 info
->callbacks
->einfo
8750 (_("%P: %H: %s references "
8751 "optimized away TOC entry\n"),
8752 ibfd
, sec
, rel
->r_offset
,
8753 ppc64_elf_howto_table
[r_type
]->name
);
8754 bfd_set_error (bfd_error_bad_value
);
8757 rel
->r_addend
= tocrel
->r_addend
;
8758 elf_section_data (sec
)->relocs
= relstart
;
8762 if (h
!= NULL
|| sym
->st_value
!= 0)
8765 rel
->r_addend
-= skip
[val
>> 3];
8766 elf_section_data (sec
)->relocs
= relstart
;
8769 if (elf_section_data (sec
)->relocs
!= relstart
)
8773 /* We shouldn't have local or global symbols defined in the TOC,
8774 but handle them anyway. */
8775 if (local_syms
!= NULL
)
8776 for (sym
= local_syms
;
8777 sym
< local_syms
+ symtab_hdr
->sh_info
;
8779 if (sym
->st_value
!= 0
8780 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8784 if (sym
->st_value
> toc
->rawsize
)
8785 i
= toc
->rawsize
>> 3;
8787 i
= sym
->st_value
>> 3;
8789 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8792 (*_bfd_error_handler
)
8793 (_("%s defined on removed toc entry"),
8794 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8797 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8798 sym
->st_value
= (bfd_vma
) i
<< 3;
8801 sym
->st_value
-= skip
[i
];
8802 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8805 /* Adjust any global syms defined in this toc input section. */
8806 if (toc_inf
.global_toc_syms
)
8809 toc_inf
.skip
= skip
;
8810 toc_inf
.global_toc_syms
= FALSE
;
8811 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8815 if (toc
->reloc_count
!= 0)
8817 Elf_Internal_Shdr
*rel_hdr
;
8818 Elf_Internal_Rela
*wrel
;
8821 /* Remove unused toc relocs, and adjust those we keep. */
8822 if (toc_relocs
== NULL
)
8823 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8825 if (toc_relocs
== NULL
)
8829 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8830 if ((skip
[rel
->r_offset
>> 3]
8831 & (ref_from_discarded
| can_optimize
)) == 0)
8833 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8834 wrel
->r_info
= rel
->r_info
;
8835 wrel
->r_addend
= rel
->r_addend
;
8838 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8839 &local_syms
, NULL
, NULL
))
8842 elf_section_data (toc
)->relocs
= toc_relocs
;
8843 toc
->reloc_count
= wrel
- toc_relocs
;
8844 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8845 sz
= rel_hdr
->sh_entsize
;
8846 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8849 else if (toc_relocs
!= NULL
8850 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8853 if (local_syms
!= NULL
8854 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8856 if (!info
->keep_memory
)
8859 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8867 /* Return true iff input section I references the TOC using
8868 instructions limited to +/-32k offsets. */
8871 ppc64_elf_has_small_toc_reloc (asection
*i
)
8873 return (is_ppc64_elf (i
->owner
)
8874 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8877 /* Allocate space for one GOT entry. */
8880 allocate_got (struct elf_link_hash_entry
*h
,
8881 struct bfd_link_info
*info
,
8882 struct got_entry
*gent
)
8884 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8886 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8887 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8889 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8890 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8891 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8893 gent
->got
.offset
= got
->size
;
8894 got
->size
+= entsize
;
8896 dyn
= htab
->elf
.dynamic_sections_created
;
8897 if (h
->type
== STT_GNU_IFUNC
)
8899 htab
->reliplt
->size
+= rentsize
;
8900 htab
->got_reli_size
+= rentsize
;
8902 else if ((info
->shared
8903 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8904 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8905 || h
->root
.type
!= bfd_link_hash_undefweak
))
8907 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8908 relgot
->size
+= rentsize
;
8912 /* This function merges got entries in the same toc group. */
8915 merge_got_entries (struct got_entry
**pent
)
8917 struct got_entry
*ent
, *ent2
;
8919 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8920 if (!ent
->is_indirect
)
8921 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8922 if (!ent2
->is_indirect
8923 && ent2
->addend
== ent
->addend
8924 && ent2
->tls_type
== ent
->tls_type
8925 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8927 ent2
->is_indirect
= TRUE
;
8928 ent2
->got
.ent
= ent
;
8932 /* Allocate space in .plt, .got and associated reloc sections for
8936 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8938 struct bfd_link_info
*info
;
8939 struct ppc_link_hash_table
*htab
;
8941 struct ppc_link_hash_entry
*eh
;
8942 struct elf_dyn_relocs
*p
;
8943 struct got_entry
**pgent
, *gent
;
8945 if (h
->root
.type
== bfd_link_hash_indirect
)
8948 info
= (struct bfd_link_info
*) inf
;
8949 htab
= ppc_hash_table (info
);
8953 if ((htab
->elf
.dynamic_sections_created
8955 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8956 || h
->type
== STT_GNU_IFUNC
)
8958 struct plt_entry
*pent
;
8959 bfd_boolean doneone
= FALSE
;
8960 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8961 if (pent
->plt
.refcount
> 0)
8963 if (!htab
->elf
.dynamic_sections_created
8964 || h
->dynindx
== -1)
8967 pent
->plt
.offset
= s
->size
;
8968 s
->size
+= PLT_ENTRY_SIZE
;
8973 /* If this is the first .plt entry, make room for the special
8977 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8979 pent
->plt
.offset
= s
->size
;
8981 /* Make room for this entry. */
8982 s
->size
+= PLT_ENTRY_SIZE
;
8984 /* Make room for the .glink code. */
8987 s
->size
+= GLINK_CALL_STUB_SIZE
;
8988 /* We need bigger stubs past index 32767. */
8989 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8993 /* We also need to make an entry in the .rela.plt section. */
8996 s
->size
+= sizeof (Elf64_External_Rela
);
9000 pent
->plt
.offset
= (bfd_vma
) -1;
9003 h
->plt
.plist
= NULL
;
9009 h
->plt
.plist
= NULL
;
9013 eh
= (struct ppc_link_hash_entry
*) h
;
9014 /* Run through the TLS GD got entries first if we're changing them
9016 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9017 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9018 if (gent
->got
.refcount
> 0
9019 && (gent
->tls_type
& TLS_GD
) != 0)
9021 /* This was a GD entry that has been converted to TPREL. If
9022 there happens to be a TPREL entry we can use that one. */
9023 struct got_entry
*ent
;
9024 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9025 if (ent
->got
.refcount
> 0
9026 && (ent
->tls_type
& TLS_TPREL
) != 0
9027 && ent
->addend
== gent
->addend
9028 && ent
->owner
== gent
->owner
)
9030 gent
->got
.refcount
= 0;
9034 /* If not, then we'll be using our own TPREL entry. */
9035 if (gent
->got
.refcount
!= 0)
9036 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9039 /* Remove any list entry that won't generate a word in the GOT before
9040 we call merge_got_entries. Otherwise we risk merging to empty
9042 pgent
= &h
->got
.glist
;
9043 while ((gent
= *pgent
) != NULL
)
9044 if (gent
->got
.refcount
> 0)
9046 if ((gent
->tls_type
& TLS_LD
) != 0
9049 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9050 *pgent
= gent
->next
;
9053 pgent
= &gent
->next
;
9056 *pgent
= gent
->next
;
9058 if (!htab
->do_multi_toc
)
9059 merge_got_entries (&h
->got
.glist
);
9061 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9062 if (!gent
->is_indirect
)
9064 /* Make sure this symbol is output as a dynamic symbol.
9065 Undefined weak syms won't yet be marked as dynamic,
9066 nor will all TLS symbols. */
9067 if (h
->dynindx
== -1
9069 && h
->type
!= STT_GNU_IFUNC
9070 && htab
->elf
.dynamic_sections_created
)
9072 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9076 if (!is_ppc64_elf (gent
->owner
))
9079 allocate_got (h
, info
, gent
);
9082 if (eh
->dyn_relocs
== NULL
9083 || (!htab
->elf
.dynamic_sections_created
9084 && h
->type
!= STT_GNU_IFUNC
))
9087 /* In the shared -Bsymbolic case, discard space allocated for
9088 dynamic pc-relative relocs against symbols which turn out to be
9089 defined in regular objects. For the normal shared case, discard
9090 space for relocs that have become local due to symbol visibility
9095 /* Relocs that use pc_count are those that appear on a call insn,
9096 or certain REL relocs (see must_be_dyn_reloc) that can be
9097 generated via assembly. We want calls to protected symbols to
9098 resolve directly to the function rather than going via the plt.
9099 If people want function pointer comparisons to work as expected
9100 then they should avoid writing weird assembly. */
9101 if (SYMBOL_CALLS_LOCAL (info
, h
))
9103 struct elf_dyn_relocs
**pp
;
9105 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9107 p
->count
-= p
->pc_count
;
9116 /* Also discard relocs on undefined weak syms with non-default
9118 if (eh
->dyn_relocs
!= NULL
9119 && h
->root
.type
== bfd_link_hash_undefweak
)
9121 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9122 eh
->dyn_relocs
= NULL
;
9124 /* Make sure this symbol is output as a dynamic symbol.
9125 Undefined weak syms won't yet be marked as dynamic. */
9126 else if (h
->dynindx
== -1
9127 && !h
->forced_local
)
9129 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9134 else if (h
->type
== STT_GNU_IFUNC
)
9136 if (!h
->non_got_ref
)
9137 eh
->dyn_relocs
= NULL
;
9139 else if (ELIMINATE_COPY_RELOCS
)
9141 /* For the non-shared case, discard space for relocs against
9142 symbols which turn out to need copy relocs or are not
9148 /* Make sure this symbol is output as a dynamic symbol.
9149 Undefined weak syms won't yet be marked as dynamic. */
9150 if (h
->dynindx
== -1
9151 && !h
->forced_local
)
9153 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9157 /* If that succeeded, we know we'll be keeping all the
9159 if (h
->dynindx
!= -1)
9163 eh
->dyn_relocs
= NULL
;
9168 /* Finally, allocate space. */
9169 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9171 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9172 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9173 sreloc
= htab
->reliplt
;
9174 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9180 /* Find any dynamic relocs that apply to read-only sections. */
9183 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9185 struct ppc_link_hash_entry
*eh
;
9186 struct elf_dyn_relocs
*p
;
9188 eh
= (struct ppc_link_hash_entry
*) h
;
9189 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9191 asection
*s
= p
->sec
->output_section
;
9193 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
9195 struct bfd_link_info
*info
= inf
;
9197 info
->flags
|= DF_TEXTREL
;
9199 /* Not an error, just cut short the traversal. */
9206 /* Set the sizes of the dynamic sections. */
9209 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9210 struct bfd_link_info
*info
)
9212 struct ppc_link_hash_table
*htab
;
9217 struct got_entry
*first_tlsld
;
9219 htab
= ppc_hash_table (info
);
9223 dynobj
= htab
->elf
.dynobj
;
9227 if (htab
->elf
.dynamic_sections_created
)
9229 /* Set the contents of the .interp section to the interpreter. */
9230 if (info
->executable
)
9232 s
= bfd_get_linker_section (dynobj
, ".interp");
9235 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9236 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9240 /* Set up .got offsets for local syms, and space for local dynamic
9242 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9244 struct got_entry
**lgot_ents
;
9245 struct got_entry
**end_lgot_ents
;
9246 struct plt_entry
**local_plt
;
9247 struct plt_entry
**end_local_plt
;
9248 unsigned char *lgot_masks
;
9249 bfd_size_type locsymcount
;
9250 Elf_Internal_Shdr
*symtab_hdr
;
9252 if (!is_ppc64_elf (ibfd
))
9255 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9257 struct ppc_dyn_relocs
*p
;
9259 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9261 if (!bfd_is_abs_section (p
->sec
)
9262 && bfd_is_abs_section (p
->sec
->output_section
))
9264 /* Input section has been discarded, either because
9265 it is a copy of a linkonce section or due to
9266 linker script /DISCARD/, so we'll be discarding
9269 else if (p
->count
!= 0)
9271 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9273 srel
= htab
->reliplt
;
9274 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9275 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9276 info
->flags
|= DF_TEXTREL
;
9281 lgot_ents
= elf_local_got_ents (ibfd
);
9285 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9286 locsymcount
= symtab_hdr
->sh_info
;
9287 end_lgot_ents
= lgot_ents
+ locsymcount
;
9288 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9289 end_local_plt
= local_plt
+ locsymcount
;
9290 lgot_masks
= (unsigned char *) end_local_plt
;
9291 s
= ppc64_elf_tdata (ibfd
)->got
;
9292 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9294 struct got_entry
**pent
, *ent
;
9297 while ((ent
= *pent
) != NULL
)
9298 if (ent
->got
.refcount
> 0)
9300 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9302 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9307 unsigned int ent_size
= 8;
9308 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9310 ent
->got
.offset
= s
->size
;
9311 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9316 s
->size
+= ent_size
;
9317 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9319 htab
->reliplt
->size
+= rel_size
;
9320 htab
->got_reli_size
+= rel_size
;
9322 else if (info
->shared
)
9324 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9325 srel
->size
+= rel_size
;
9334 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9335 for (; local_plt
< end_local_plt
; ++local_plt
)
9337 struct plt_entry
*ent
;
9339 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9340 if (ent
->plt
.refcount
> 0)
9343 ent
->plt
.offset
= s
->size
;
9344 s
->size
+= PLT_ENTRY_SIZE
;
9346 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
9349 ent
->plt
.offset
= (bfd_vma
) -1;
9353 /* Allocate global sym .plt and .got entries, and space for global
9354 sym dynamic relocs. */
9355 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9358 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9360 struct got_entry
*ent
;
9362 if (!is_ppc64_elf (ibfd
))
9365 ent
= ppc64_tlsld_got (ibfd
);
9366 if (ent
->got
.refcount
> 0)
9368 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9370 ent
->is_indirect
= TRUE
;
9371 ent
->got
.ent
= first_tlsld
;
9375 if (first_tlsld
== NULL
)
9377 s
= ppc64_elf_tdata (ibfd
)->got
;
9378 ent
->got
.offset
= s
->size
;
9383 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9384 srel
->size
+= sizeof (Elf64_External_Rela
);
9389 ent
->got
.offset
= (bfd_vma
) -1;
9392 /* We now have determined the sizes of the various dynamic sections.
9393 Allocate memory for them. */
9395 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9397 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9400 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9401 /* These haven't been allocated yet; don't strip. */
9403 else if (s
== htab
->got
9407 || s
== htab
->dynbss
)
9409 /* Strip this section if we don't need it; see the
9412 else if (s
== htab
->glink_eh_frame
)
9414 if (!bfd_is_abs_section (s
->output_section
))
9415 /* Not sized yet. */
9418 else if (CONST_STRNEQ (s
->name
, ".rela"))
9422 if (s
!= htab
->relplt
)
9425 /* We use the reloc_count field as a counter if we need
9426 to copy relocs into the output file. */
9432 /* It's not one of our sections, so don't allocate space. */
9438 /* If we don't need this section, strip it from the
9439 output file. This is mostly to handle .rela.bss and
9440 .rela.plt. We must create both sections in
9441 create_dynamic_sections, because they must be created
9442 before the linker maps input sections to output
9443 sections. The linker does that before
9444 adjust_dynamic_symbol is called, and it is that
9445 function which decides whether anything needs to go
9446 into these sections. */
9447 s
->flags
|= SEC_EXCLUDE
;
9451 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9454 /* Allocate memory for the section contents. We use bfd_zalloc
9455 here in case unused entries are not reclaimed before the
9456 section's contents are written out. This should not happen,
9457 but this way if it does we get a R_PPC64_NONE reloc in .rela
9458 sections instead of garbage.
9459 We also rely on the section contents being zero when writing
9461 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9462 if (s
->contents
== NULL
)
9466 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9468 if (!is_ppc64_elf (ibfd
))
9471 s
= ppc64_elf_tdata (ibfd
)->got
;
9472 if (s
!= NULL
&& s
!= htab
->got
)
9475 s
->flags
|= SEC_EXCLUDE
;
9478 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9479 if (s
->contents
== NULL
)
9483 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9487 s
->flags
|= SEC_EXCLUDE
;
9490 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9491 if (s
->contents
== NULL
)
9499 if (htab
->elf
.dynamic_sections_created
)
9501 /* Add some entries to the .dynamic section. We fill in the
9502 values later, in ppc64_elf_finish_dynamic_sections, but we
9503 must add the entries now so that we get the correct size for
9504 the .dynamic section. The DT_DEBUG entry is filled in by the
9505 dynamic linker and used by the debugger. */
9506 #define add_dynamic_entry(TAG, VAL) \
9507 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9509 if (info
->executable
)
9511 if (!add_dynamic_entry (DT_DEBUG
, 0))
9515 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9517 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9518 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9519 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9520 || !add_dynamic_entry (DT_JMPREL
, 0)
9521 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9527 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9528 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9532 if (!htab
->no_tls_get_addr_opt
9533 && htab
->tls_get_addr_fd
!= NULL
9534 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9535 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9540 if (!add_dynamic_entry (DT_RELA
, 0)
9541 || !add_dynamic_entry (DT_RELASZ
, 0)
9542 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9545 /* If any dynamic relocs apply to a read-only section,
9546 then we need a DT_TEXTREL entry. */
9547 if ((info
->flags
& DF_TEXTREL
) == 0)
9548 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9550 if ((info
->flags
& DF_TEXTREL
) != 0)
9552 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9557 #undef add_dynamic_entry
9562 /* Determine the type of stub needed, if any, for a call. */
9564 static inline enum ppc_stub_type
9565 ppc_type_of_stub (asection
*input_sec
,
9566 const Elf_Internal_Rela
*rel
,
9567 struct ppc_link_hash_entry
**hash
,
9568 struct plt_entry
**plt_ent
,
9569 bfd_vma destination
)
9571 struct ppc_link_hash_entry
*h
= *hash
;
9573 bfd_vma branch_offset
;
9574 bfd_vma max_branch_offset
;
9575 enum elf_ppc64_reloc_type r_type
;
9579 struct plt_entry
*ent
;
9580 struct ppc_link_hash_entry
*fdh
= h
;
9582 && h
->oh
->is_func_descriptor
)
9584 fdh
= ppc_follow_link (h
->oh
);
9588 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9589 if (ent
->addend
== rel
->r_addend
9590 && ent
->plt
.offset
!= (bfd_vma
) -1)
9593 return ppc_stub_plt_call
;
9596 /* Here, we know we don't have a plt entry. If we don't have a
9597 either a defined function descriptor or a defined entry symbol
9598 in a regular object file, then it is pointless trying to make
9599 any other type of stub. */
9600 if (!is_static_defined (&fdh
->elf
)
9601 && !is_static_defined (&h
->elf
))
9602 return ppc_stub_none
;
9604 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9606 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9607 struct plt_entry
**local_plt
= (struct plt_entry
**)
9608 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9609 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9611 if (local_plt
[r_symndx
] != NULL
)
9613 struct plt_entry
*ent
;
9615 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9616 if (ent
->addend
== rel
->r_addend
9617 && ent
->plt
.offset
!= (bfd_vma
) -1)
9620 return ppc_stub_plt_call
;
9625 /* Determine where the call point is. */
9626 location
= (input_sec
->output_offset
9627 + input_sec
->output_section
->vma
9630 branch_offset
= destination
- location
;
9631 r_type
= ELF64_R_TYPE (rel
->r_info
);
9633 /* Determine if a long branch stub is needed. */
9634 max_branch_offset
= 1 << 25;
9635 if (r_type
!= R_PPC64_REL24
)
9636 max_branch_offset
= 1 << 15;
9638 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9639 /* We need a stub. Figure out whether a long_branch or plt_branch
9641 return ppc_stub_long_branch
;
9643 return ppc_stub_none
;
9646 /* With power7 weakly ordered memory model, it is possible for ld.so
9647 to update a plt entry in one thread and have another thread see a
9648 stale zero toc entry. To avoid this we need some sort of acquire
9649 barrier in the call stub. One solution is to make the load of the
9650 toc word seem to appear to depend on the load of the function entry
9651 word. Another solution is to test for r2 being zero, and branch to
9652 the appropriate glink entry if so.
9654 . fake dep barrier compare
9655 . ld 11,xxx(2) ld 11,xxx(2)
9657 . xor 11,11,11 ld 2,xxx+8(2)
9658 . add 2,2,11 cmpldi 2,0
9659 . ld 2,xxx+8(2) bnectr+
9660 . bctr b <glink_entry>
9662 The solution involving the compare turns out to be faster, so
9663 that's what we use unless the branch won't reach. */
9665 #define ALWAYS_USE_FAKE_DEP 0
9666 #define ALWAYS_EMIT_R2SAVE 0
9668 #define PPC_LO(v) ((v) & 0xffff)
9669 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9670 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9672 static inline unsigned int
9673 plt_stub_size (struct ppc_link_hash_table
*htab
,
9674 struct ppc_stub_hash_entry
*stub_entry
,
9677 unsigned size
= PLT_CALL_STUB_SIZE
;
9679 if (!(ALWAYS_EMIT_R2SAVE
9680 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
9682 if (!htab
->plt_static_chain
)
9684 if (htab
->plt_thread_safe
)
9686 if (PPC_HA (off
) == 0)
9688 if (PPC_HA (off
+ 8 + 8 * htab
->plt_static_chain
) != PPC_HA (off
))
9690 if (stub_entry
->h
!= NULL
9691 && (stub_entry
->h
== htab
->tls_get_addr_fd
9692 || stub_entry
->h
== htab
->tls_get_addr
)
9693 && !htab
->no_tls_get_addr_opt
)
9698 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9699 then return the padding needed to do so. */
9700 static inline unsigned int
9701 plt_stub_pad (struct ppc_link_hash_table
*htab
,
9702 struct ppc_stub_hash_entry
*stub_entry
,
9705 int stub_align
= 1 << htab
->plt_stub_align
;
9706 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
9707 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
9709 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
9710 > (stub_size
& -stub_align
))
9711 return stub_align
- (stub_off
& (stub_align
- 1));
9715 /* Build a .plt call stub. */
9717 static inline bfd_byte
*
9718 build_plt_stub (struct ppc_link_hash_table
*htab
,
9719 struct ppc_stub_hash_entry
*stub_entry
,
9720 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
9722 bfd
*obfd
= htab
->stub_bfd
;
9723 bfd_boolean plt_static_chain
= htab
->plt_static_chain
;
9724 bfd_boolean plt_thread_safe
= htab
->plt_thread_safe
;
9725 bfd_boolean use_fake_dep
= plt_thread_safe
;
9726 bfd_vma cmp_branch_off
= 0;
9728 if (!ALWAYS_USE_FAKE_DEP
9730 && !(stub_entry
->h
!= NULL
9731 && (stub_entry
->h
== htab
->tls_get_addr_fd
9732 || stub_entry
->h
== htab
->tls_get_addr
)
9733 && !htab
->no_tls_get_addr_opt
))
9735 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9736 bfd_vma pltindex
= (pltoff
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
;
9737 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
9740 if (pltindex
> 32768)
9741 glinkoff
+= (pltindex
- 32768) * 4;
9743 + htab
->glink
->output_offset
9744 + htab
->glink
->output_section
->vma
);
9745 from
= (p
- stub_entry
->stub_sec
->contents
9746 + 4 * (ALWAYS_EMIT_R2SAVE
9747 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
9748 + 4 * (PPC_HA (offset
) != 0)
9749 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
9751 + 4 * (plt_static_chain
!= 0)
9753 + stub_entry
->stub_sec
->output_offset
9754 + stub_entry
->stub_sec
->output_section
->vma
);
9755 cmp_branch_off
= to
- from
;
9756 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
9759 if (PPC_HA (offset
) != 0)
9763 if (ALWAYS_EMIT_R2SAVE
9764 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
9766 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9767 r
[1].r_offset
= r
[0].r_offset
+ 4;
9768 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9769 r
[1].r_addend
= r
[0].r_addend
;
9770 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9772 r
[2].r_offset
= r
[1].r_offset
+ 4;
9773 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9774 r
[2].r_addend
= r
[0].r_addend
;
9778 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
9779 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9780 r
[2].r_addend
= r
[0].r_addend
+ 8;
9781 if (plt_static_chain
)
9783 r
[3].r_offset
= r
[2].r_offset
+ 4;
9784 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9785 r
[3].r_addend
= r
[0].r_addend
+ 16;
9789 if (ALWAYS_EMIT_R2SAVE
9790 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
9791 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9792 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9793 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9794 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9796 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9799 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9802 bfd_put_32 (obfd
, XOR_R11_R11_R11
, p
), p
+= 4;
9803 bfd_put_32 (obfd
, ADD_R12_R12_R11
, p
), p
+= 4;
9805 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9806 if (plt_static_chain
)
9807 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9813 if (ALWAYS_EMIT_R2SAVE
9814 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
9816 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9817 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9819 r
[1].r_offset
= r
[0].r_offset
+ 4;
9820 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9821 r
[1].r_addend
= r
[0].r_addend
;
9825 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
9826 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9827 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
9828 if (plt_static_chain
)
9830 r
[2].r_offset
= r
[1].r_offset
+ 4;
9831 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9832 r
[2].r_addend
= r
[0].r_addend
+ 8;
9836 if (ALWAYS_EMIT_R2SAVE
9837 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
9838 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9839 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9840 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
9842 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9845 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9848 bfd_put_32 (obfd
, XOR_R11_R11_R11
, p
), p
+= 4;
9849 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
9851 if (plt_static_chain
)
9852 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9853 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9855 if (plt_thread_safe
&& !use_fake_dep
)
9857 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
9858 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
9859 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
9862 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9866 /* Build a special .plt call stub for __tls_get_addr. */
9868 #define LD_R11_0R3 0xe9630000
9869 #define LD_R12_0R3 0xe9830000
9870 #define MR_R0_R3 0x7c601b78
9871 #define CMPDI_R11_0 0x2c2b0000
9872 #define ADD_R3_R12_R13 0x7c6c6a14
9873 #define BEQLR 0x4d820020
9874 #define MR_R3_R0 0x7c030378
9875 #define MFLR_R11 0x7d6802a6
9876 #define STD_R11_0R1 0xf9610000
9877 #define BCTRL 0x4e800421
9878 #define LD_R11_0R1 0xe9610000
9879 #define LD_R2_0R1 0xe8410000
9880 #define MTLR_R11 0x7d6803a6
9882 static inline bfd_byte
*
9883 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
9884 struct ppc_stub_hash_entry
*stub_entry
,
9885 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
9887 bfd
*obfd
= htab
->stub_bfd
;
9889 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9890 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9891 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9892 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9893 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9894 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9895 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9896 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9897 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9900 r
[0].r_offset
+= 9 * 4;
9901 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
9902 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9904 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9905 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9906 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9907 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9912 static Elf_Internal_Rela
*
9913 get_relocs (asection
*sec
, int count
)
9915 Elf_Internal_Rela
*relocs
;
9916 struct bfd_elf_section_data
*elfsec_data
;
9918 elfsec_data
= elf_section_data (sec
);
9919 relocs
= elfsec_data
->relocs
;
9922 bfd_size_type relsize
;
9923 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9924 relocs
= bfd_alloc (sec
->owner
, relsize
);
9927 elfsec_data
->relocs
= relocs
;
9928 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9929 sizeof (Elf_Internal_Shdr
));
9930 if (elfsec_data
->rela
.hdr
== NULL
)
9932 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9933 * sizeof (Elf64_External_Rela
));
9934 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9935 sec
->reloc_count
= 0;
9937 relocs
+= sec
->reloc_count
;
9938 sec
->reloc_count
+= count
;
9943 get_r2off (struct bfd_link_info
*info
,
9944 struct ppc_stub_hash_entry
*stub_entry
)
9946 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9947 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9951 /* Support linking -R objects. Get the toc pointer from the
9954 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9955 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9957 if (strcmp (opd
->name
, ".opd") != 0
9958 || opd
->reloc_count
!= 0)
9960 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
9961 stub_entry
->h
->elf
.root
.root
.string
);
9962 bfd_set_error (bfd_error_bad_value
);
9965 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9967 r2off
= bfd_get_64 (opd
->owner
, buf
);
9968 r2off
-= elf_gp (info
->output_bfd
);
9970 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9975 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9977 struct ppc_stub_hash_entry
*stub_entry
;
9978 struct ppc_branch_hash_entry
*br_entry
;
9979 struct bfd_link_info
*info
;
9980 struct ppc_link_hash_table
*htab
;
9985 Elf_Internal_Rela
*r
;
9988 /* Massage our args to the form they really have. */
9989 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9992 htab
= ppc_hash_table (info
);
9996 /* Make a note of the offset within the stubs for this entry. */
9997 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9998 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10000 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10001 switch (stub_entry
->stub_type
)
10003 case ppc_stub_long_branch
:
10004 case ppc_stub_long_branch_r2off
:
10005 /* Branches are relative. This is where we are going to. */
10006 off
= dest
= (stub_entry
->target_value
10007 + stub_entry
->target_section
->output_offset
10008 + stub_entry
->target_section
->output_section
->vma
);
10010 /* And this is where we are coming from. */
10011 off
-= (stub_entry
->stub_offset
10012 + stub_entry
->stub_sec
->output_offset
10013 + stub_entry
->stub_sec
->output_section
->vma
);
10016 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10018 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10022 htab
->stub_error
= TRUE
;
10025 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
10028 if (PPC_HA (r2off
) != 0)
10031 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10034 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10038 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10040 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10042 info
->callbacks
->einfo
10043 (_("%P: long branch stub `%s' offset overflow\n"),
10044 stub_entry
->root
.string
);
10045 htab
->stub_error
= TRUE
;
10049 if (info
->emitrelocations
)
10051 r
= get_relocs (stub_entry
->stub_sec
, 1);
10054 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10055 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10056 r
->r_addend
= dest
;
10057 if (stub_entry
->h
!= NULL
)
10059 struct elf_link_hash_entry
**hashes
;
10060 unsigned long symndx
;
10061 struct ppc_link_hash_entry
*h
;
10063 hashes
= elf_sym_hashes (htab
->stub_bfd
);
10064 if (hashes
== NULL
)
10066 bfd_size_type hsize
;
10068 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10069 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
10070 if (hashes
== NULL
)
10072 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
10073 htab
->stub_globals
= 1;
10075 symndx
= htab
->stub_globals
++;
10077 hashes
[symndx
] = &h
->elf
;
10078 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10079 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10080 h
= ppc_follow_link (h
->oh
);
10081 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10082 /* H is an opd symbol. The addend must be zero. */
10086 off
= (h
->elf
.root
.u
.def
.value
10087 + h
->elf
.root
.u
.def
.section
->output_offset
10088 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10089 r
->r_addend
-= off
;
10095 case ppc_stub_plt_branch
:
10096 case ppc_stub_plt_branch_r2off
:
10097 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10098 stub_entry
->root
.string
+ 9,
10100 if (br_entry
== NULL
)
10102 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10103 stub_entry
->root
.string
);
10104 htab
->stub_error
= TRUE
;
10108 dest
= (stub_entry
->target_value
10109 + stub_entry
->target_section
->output_offset
10110 + stub_entry
->target_section
->output_section
->vma
);
10112 bfd_put_64 (htab
->brlt
->owner
, dest
,
10113 htab
->brlt
->contents
+ br_entry
->offset
);
10115 if (br_entry
->iter
== htab
->stub_iteration
)
10117 br_entry
->iter
= 0;
10119 if (htab
->relbrlt
!= NULL
)
10121 /* Create a reloc for the branch lookup table entry. */
10122 Elf_Internal_Rela rela
;
10125 rela
.r_offset
= (br_entry
->offset
10126 + htab
->brlt
->output_offset
10127 + htab
->brlt
->output_section
->vma
);
10128 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10129 rela
.r_addend
= dest
;
10131 rl
= htab
->relbrlt
->contents
;
10132 rl
+= (htab
->relbrlt
->reloc_count
++
10133 * sizeof (Elf64_External_Rela
));
10134 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10136 else if (info
->emitrelocations
)
10138 r
= get_relocs (htab
->brlt
, 1);
10141 /* brlt, being SEC_LINKER_CREATED does not go through the
10142 normal reloc processing. Symbols and offsets are not
10143 translated from input file to output file form, so
10144 set up the offset per the output file. */
10145 r
->r_offset
= (br_entry
->offset
10146 + htab
->brlt
->output_offset
10147 + htab
->brlt
->output_section
->vma
);
10148 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10149 r
->r_addend
= dest
;
10153 dest
= (br_entry
->offset
10154 + htab
->brlt
->output_offset
10155 + htab
->brlt
->output_section
->vma
);
10158 - elf_gp (htab
->brlt
->output_section
->owner
)
10159 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10161 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10163 info
->callbacks
->einfo
10164 (_("%P: linkage table error against `%T'\n"),
10165 stub_entry
->root
.string
);
10166 bfd_set_error (bfd_error_bad_value
);
10167 htab
->stub_error
= TRUE
;
10171 if (info
->emitrelocations
)
10173 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10176 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10177 if (bfd_big_endian (info
->output_bfd
))
10178 r
[0].r_offset
+= 2;
10179 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10180 r
[0].r_offset
+= 4;
10181 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10182 r
[0].r_addend
= dest
;
10183 if (PPC_HA (off
) != 0)
10185 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10186 r
[1].r_offset
= r
[0].r_offset
+ 4;
10187 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10188 r
[1].r_addend
= r
[0].r_addend
;
10192 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10194 if (PPC_HA (off
) != 0)
10197 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
10199 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
10204 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
10209 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10213 htab
->stub_error
= TRUE
;
10217 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
10220 if (PPC_HA (off
) != 0)
10223 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
10225 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
10230 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
10234 if (PPC_HA (r2off
) != 0)
10237 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10240 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10243 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
10245 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
10248 case ppc_stub_plt_call
:
10249 case ppc_stub_plt_call_r2save
:
10250 if (stub_entry
->h
!= NULL
10251 && stub_entry
->h
->is_func_descriptor
10252 && stub_entry
->h
->oh
!= NULL
)
10254 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10256 /* If the old-ABI "dot-symbol" is undefined make it weak so
10257 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10258 FIXME: We used to define the symbol on one of the call
10259 stubs instead, which is why we test symbol section id
10260 against htab->top_id in various places. Likely all
10261 these checks could now disappear. */
10262 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10263 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10264 /* Stop undo_symbol_twiddle changing it back to undefined. */
10265 fh
->was_undefined
= 0;
10268 /* Now build the stub. */
10269 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10270 if (dest
>= (bfd_vma
) -2)
10274 if (!htab
->elf
.dynamic_sections_created
10275 || stub_entry
->h
== NULL
10276 || stub_entry
->h
->elf
.dynindx
== -1)
10279 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10281 if (stub_entry
->h
== NULL
10282 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10284 Elf_Internal_Rela rela
;
10287 rela
.r_offset
= dest
;
10288 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10289 rela
.r_addend
= (stub_entry
->target_value
10290 + stub_entry
->target_section
->output_offset
10291 + stub_entry
->target_section
->output_section
->vma
);
10293 rl
= (htab
->reliplt
->contents
10294 + (htab
->reliplt
->reloc_count
++
10295 * sizeof (Elf64_External_Rela
)));
10296 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10297 stub_entry
->plt_ent
->plt
.offset
|= 1;
10301 - elf_gp (plt
->output_section
->owner
)
10302 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10304 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10306 info
->callbacks
->einfo
10307 (_("%P: linkage table error against `%T'\n"),
10308 stub_entry
->h
!= NULL
10309 ? stub_entry
->h
->elf
.root
.root
.string
10311 bfd_set_error (bfd_error_bad_value
);
10312 htab
->stub_error
= TRUE
;
10316 if (htab
->plt_stub_align
!= 0)
10318 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10320 stub_entry
->stub_sec
->size
+= pad
;
10321 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10326 if (info
->emitrelocations
)
10328 r
= get_relocs (stub_entry
->stub_sec
,
10330 + (PPC_HA (off
) != 0)
10331 + (htab
->plt_static_chain
10332 && PPC_HA (off
+ 16) == PPC_HA (off
))));
10335 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10336 if (bfd_big_endian (info
->output_bfd
))
10337 r
[0].r_offset
+= 2;
10338 r
[0].r_addend
= dest
;
10340 if (stub_entry
->h
!= NULL
10341 && (stub_entry
->h
== htab
->tls_get_addr_fd
10342 || stub_entry
->h
== htab
->tls_get_addr
)
10343 && !htab
->no_tls_get_addr_opt
)
10344 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10346 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10355 stub_entry
->stub_sec
->size
+= size
;
10357 if (htab
->emit_stub_syms
)
10359 struct elf_link_hash_entry
*h
;
10362 const char *const stub_str
[] = { "long_branch",
10363 "long_branch_r2off",
10365 "plt_branch_r2off",
10369 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10370 len2
= strlen (stub_entry
->root
.string
);
10371 name
= bfd_malloc (len1
+ len2
+ 2);
10374 memcpy (name
, stub_entry
->root
.string
, 9);
10375 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10376 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10377 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10380 if (h
->root
.type
== bfd_link_hash_new
)
10382 h
->root
.type
= bfd_link_hash_defined
;
10383 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10384 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10385 h
->ref_regular
= 1;
10386 h
->def_regular
= 1;
10387 h
->ref_regular_nonweak
= 1;
10388 h
->forced_local
= 1;
10396 /* As above, but don't actually build the stub. Just bump offset so
10397 we know stub section sizes, and select plt_branch stubs where
10398 long_branch stubs won't do. */
10401 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10403 struct ppc_stub_hash_entry
*stub_entry
;
10404 struct bfd_link_info
*info
;
10405 struct ppc_link_hash_table
*htab
;
10409 /* Massage our args to the form they really have. */
10410 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10413 htab
= ppc_hash_table (info
);
10417 if (stub_entry
->stub_type
== ppc_stub_plt_call
10418 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10421 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10422 if (off
>= (bfd_vma
) -2)
10425 if (!htab
->elf
.dynamic_sections_created
10426 || stub_entry
->h
== NULL
10427 || stub_entry
->h
->elf
.dynindx
== -1)
10429 off
+= (plt
->output_offset
10430 + plt
->output_section
->vma
10431 - elf_gp (plt
->output_section
->owner
)
10432 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10434 size
= plt_stub_size (htab
, stub_entry
, off
);
10435 if (htab
->plt_stub_align
)
10436 size
+= plt_stub_pad (htab
, stub_entry
, off
);
10437 if (info
->emitrelocations
)
10439 stub_entry
->stub_sec
->reloc_count
10441 + (PPC_HA (off
) != 0)
10442 + (htab
->plt_static_chain
10443 && PPC_HA (off
+ 16) == PPC_HA (off
)));
10444 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10449 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10453 off
= (stub_entry
->target_value
10454 + stub_entry
->target_section
->output_offset
10455 + stub_entry
->target_section
->output_section
->vma
);
10456 off
-= (stub_entry
->stub_sec
->size
10457 + stub_entry
->stub_sec
->output_offset
10458 + stub_entry
->stub_sec
->output_section
->vma
);
10460 /* Reset the stub type from the plt variant in case we now
10461 can reach with a shorter stub. */
10462 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10463 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10466 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10468 r2off
= get_r2off (info
, stub_entry
);
10471 htab
->stub_error
= TRUE
;
10475 if (PPC_HA (r2off
) != 0)
10480 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
10481 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10483 struct ppc_branch_hash_entry
*br_entry
;
10485 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10486 stub_entry
->root
.string
+ 9,
10488 if (br_entry
== NULL
)
10490 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
10491 stub_entry
->root
.string
);
10492 htab
->stub_error
= TRUE
;
10496 if (br_entry
->iter
!= htab
->stub_iteration
)
10498 br_entry
->iter
= htab
->stub_iteration
;
10499 br_entry
->offset
= htab
->brlt
->size
;
10500 htab
->brlt
->size
+= 8;
10502 if (htab
->relbrlt
!= NULL
)
10503 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10504 else if (info
->emitrelocations
)
10506 htab
->brlt
->reloc_count
+= 1;
10507 htab
->brlt
->flags
|= SEC_RELOC
;
10511 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10512 off
= (br_entry
->offset
10513 + htab
->brlt
->output_offset
10514 + htab
->brlt
->output_section
->vma
10515 - elf_gp (htab
->brlt
->output_section
->owner
)
10516 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10518 if (info
->emitrelocations
)
10520 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10521 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10524 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10527 if (PPC_HA (off
) != 0)
10533 if (PPC_HA (off
) != 0)
10536 if (PPC_HA (r2off
) != 0)
10540 else if (info
->emitrelocations
)
10542 stub_entry
->stub_sec
->reloc_count
+= 1;
10543 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10547 stub_entry
->stub_sec
->size
+= size
;
10551 /* Set up various things so that we can make a list of input sections
10552 for each output section included in the link. Returns -1 on error,
10553 0 when no stubs will be needed, and 1 on success. */
10556 ppc64_elf_setup_section_lists
10557 (struct bfd_link_info
*info
,
10558 asection
*(*add_stub_section
) (const char *, asection
*),
10559 void (*layout_sections_again
) (void))
10562 int top_id
, top_index
, id
;
10564 asection
**input_list
;
10566 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10570 /* Stash our params away. */
10571 htab
->add_stub_section
= add_stub_section
;
10572 htab
->layout_sections_again
= layout_sections_again
;
10574 /* Find the top input section id. */
10575 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10577 input_bfd
= input_bfd
->link_next
)
10579 for (section
= input_bfd
->sections
;
10581 section
= section
->next
)
10583 if (top_id
< section
->id
)
10584 top_id
= section
->id
;
10588 htab
->top_id
= top_id
;
10589 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10590 htab
->stub_group
= bfd_zmalloc (amt
);
10591 if (htab
->stub_group
== NULL
)
10594 /* Set toc_off for com, und, abs and ind sections. */
10595 for (id
= 0; id
< 3; id
++)
10596 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10598 /* We can't use output_bfd->section_count here to find the top output
10599 section index as some sections may have been removed, and
10600 strip_excluded_output_sections doesn't renumber the indices. */
10601 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10603 section
= section
->next
)
10605 if (top_index
< section
->index
)
10606 top_index
= section
->index
;
10609 htab
->top_index
= top_index
;
10610 amt
= sizeof (asection
*) * (top_index
+ 1);
10611 input_list
= bfd_zmalloc (amt
);
10612 htab
->input_list
= input_list
;
10613 if (input_list
== NULL
)
10619 /* Set up for first pass at multitoc partitioning. */
10622 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10624 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10626 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
10627 htab
->toc_bfd
= NULL
;
10628 htab
->toc_first_sec
= NULL
;
10631 /* The linker repeatedly calls this function for each TOC input section
10632 and linker generated GOT section. Group input bfds such that the toc
10633 within a group is less than 64k in size. */
10636 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10638 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10639 bfd_vma addr
, off
, limit
;
10644 if (!htab
->second_toc_pass
)
10646 /* Keep track of the first .toc or .got section for this input bfd. */
10647 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
10651 htab
->toc_bfd
= isec
->owner
;
10652 htab
->toc_first_sec
= isec
;
10655 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10656 off
= addr
- htab
->toc_curr
;
10657 limit
= 0x80008000;
10658 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10660 if (off
+ isec
->size
> limit
)
10662 addr
= (htab
->toc_first_sec
->output_offset
10663 + htab
->toc_first_sec
->output_section
->vma
);
10664 htab
->toc_curr
= addr
;
10667 /* toc_curr is the base address of this toc group. Set elf_gp
10668 for the input section to be the offset relative to the
10669 output toc base plus 0x8000. Making the input elf_gp an
10670 offset allows us to move the toc as a whole without
10671 recalculating input elf_gp. */
10672 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10673 off
+= TOC_BASE_OFF
;
10675 /* Die if someone uses a linker script that doesn't keep input
10676 file .toc and .got together. */
10678 && elf_gp (isec
->owner
) != 0
10679 && elf_gp (isec
->owner
) != off
)
10682 elf_gp (isec
->owner
) = off
;
10686 /* During the second pass toc_first_sec points to the start of
10687 a toc group, and toc_curr is used to track the old elf_gp.
10688 We use toc_bfd to ensure we only look at each bfd once. */
10689 if (htab
->toc_bfd
== isec
->owner
)
10691 htab
->toc_bfd
= isec
->owner
;
10693 if (htab
->toc_first_sec
== NULL
10694 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10696 htab
->toc_curr
= elf_gp (isec
->owner
);
10697 htab
->toc_first_sec
= isec
;
10699 addr
= (htab
->toc_first_sec
->output_offset
10700 + htab
->toc_first_sec
->output_section
->vma
);
10701 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10702 elf_gp (isec
->owner
) = off
;
10707 /* Called via elf_link_hash_traverse to merge GOT entries for global
10711 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10713 if (h
->root
.type
== bfd_link_hash_indirect
)
10716 merge_got_entries (&h
->got
.glist
);
10721 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10725 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10727 struct got_entry
*gent
;
10729 if (h
->root
.type
== bfd_link_hash_indirect
)
10732 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10733 if (!gent
->is_indirect
)
10734 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10738 /* Called on the first multitoc pass after the last call to
10739 ppc64_elf_next_toc_section. This function removes duplicate GOT
10743 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10745 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10746 struct bfd
*ibfd
, *ibfd2
;
10747 bfd_boolean done_something
;
10749 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10751 if (!htab
->do_multi_toc
)
10754 /* Merge global sym got entries within a toc group. */
10755 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10757 /* And tlsld_got. */
10758 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10760 struct got_entry
*ent
, *ent2
;
10762 if (!is_ppc64_elf (ibfd
))
10765 ent
= ppc64_tlsld_got (ibfd
);
10766 if (!ent
->is_indirect
10767 && ent
->got
.offset
!= (bfd_vma
) -1)
10769 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10771 if (!is_ppc64_elf (ibfd2
))
10774 ent2
= ppc64_tlsld_got (ibfd2
);
10775 if (!ent2
->is_indirect
10776 && ent2
->got
.offset
!= (bfd_vma
) -1
10777 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10779 ent2
->is_indirect
= TRUE
;
10780 ent2
->got
.ent
= ent
;
10786 /* Zap sizes of got sections. */
10787 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10788 htab
->reliplt
->size
-= htab
->got_reli_size
;
10789 htab
->got_reli_size
= 0;
10791 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10793 asection
*got
, *relgot
;
10795 if (!is_ppc64_elf (ibfd
))
10798 got
= ppc64_elf_tdata (ibfd
)->got
;
10801 got
->rawsize
= got
->size
;
10803 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10804 relgot
->rawsize
= relgot
->size
;
10809 /* Now reallocate the got, local syms first. We don't need to
10810 allocate section contents again since we never increase size. */
10811 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10813 struct got_entry
**lgot_ents
;
10814 struct got_entry
**end_lgot_ents
;
10815 struct plt_entry
**local_plt
;
10816 struct plt_entry
**end_local_plt
;
10817 unsigned char *lgot_masks
;
10818 bfd_size_type locsymcount
;
10819 Elf_Internal_Shdr
*symtab_hdr
;
10822 if (!is_ppc64_elf (ibfd
))
10825 lgot_ents
= elf_local_got_ents (ibfd
);
10829 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10830 locsymcount
= symtab_hdr
->sh_info
;
10831 end_lgot_ents
= lgot_ents
+ locsymcount
;
10832 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10833 end_local_plt
= local_plt
+ locsymcount
;
10834 lgot_masks
= (unsigned char *) end_local_plt
;
10835 s
= ppc64_elf_tdata (ibfd
)->got
;
10836 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10838 struct got_entry
*ent
;
10840 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10842 unsigned int ent_size
= 8;
10843 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10845 ent
->got
.offset
= s
->size
;
10846 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10851 s
->size
+= ent_size
;
10852 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10854 htab
->reliplt
->size
+= rel_size
;
10855 htab
->got_reli_size
+= rel_size
;
10857 else if (info
->shared
)
10859 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10860 srel
->size
+= rel_size
;
10866 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10868 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10870 struct got_entry
*ent
;
10872 if (!is_ppc64_elf (ibfd
))
10875 ent
= ppc64_tlsld_got (ibfd
);
10876 if (!ent
->is_indirect
10877 && ent
->got
.offset
!= (bfd_vma
) -1)
10879 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10880 ent
->got
.offset
= s
->size
;
10884 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10885 srel
->size
+= sizeof (Elf64_External_Rela
);
10890 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10891 if (!done_something
)
10892 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10896 if (!is_ppc64_elf (ibfd
))
10899 got
= ppc64_elf_tdata (ibfd
)->got
;
10902 done_something
= got
->rawsize
!= got
->size
;
10903 if (done_something
)
10908 if (done_something
)
10909 (*htab
->layout_sections_again
) ();
10911 /* Set up for second pass over toc sections to recalculate elf_gp
10912 on input sections. */
10913 htab
->toc_bfd
= NULL
;
10914 htab
->toc_first_sec
= NULL
;
10915 htab
->second_toc_pass
= TRUE
;
10916 return done_something
;
10919 /* Called after second pass of multitoc partitioning. */
10922 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10924 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10926 /* After the second pass, toc_curr tracks the TOC offset used
10927 for code sections below in ppc64_elf_next_input_section. */
10928 htab
->toc_curr
= TOC_BASE_OFF
;
10931 /* No toc references were found in ISEC. If the code in ISEC makes no
10932 calls, then there's no need to use toc adjusting stubs when branching
10933 into ISEC. Actually, indirect calls from ISEC are OK as they will
10934 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10935 needed, and 2 if a cyclical call-graph was found but no other reason
10936 for a stub was detected. If called from the top level, a return of
10937 2 means the same as a return of 0. */
10940 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10944 /* Mark this section as checked. */
10945 isec
->call_check_done
= 1;
10947 /* We know none of our code bearing sections will need toc stubs. */
10948 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10951 if (isec
->size
== 0)
10954 if (isec
->output_section
== NULL
)
10958 if (isec
->reloc_count
!= 0)
10960 Elf_Internal_Rela
*relstart
, *rel
;
10961 Elf_Internal_Sym
*local_syms
;
10962 struct ppc_link_hash_table
*htab
;
10964 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10965 info
->keep_memory
);
10966 if (relstart
== NULL
)
10969 /* Look for branches to outside of this section. */
10971 htab
= ppc_hash_table (info
);
10975 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10977 enum elf_ppc64_reloc_type r_type
;
10978 unsigned long r_symndx
;
10979 struct elf_link_hash_entry
*h
;
10980 struct ppc_link_hash_entry
*eh
;
10981 Elf_Internal_Sym
*sym
;
10983 struct _opd_sec_data
*opd
;
10987 r_type
= ELF64_R_TYPE (rel
->r_info
);
10988 if (r_type
!= R_PPC64_REL24
10989 && r_type
!= R_PPC64_REL14
10990 && r_type
!= R_PPC64_REL14_BRTAKEN
10991 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10994 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10995 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11002 /* Calls to dynamic lib functions go through a plt call stub
11004 eh
= (struct ppc_link_hash_entry
*) h
;
11006 && (eh
->elf
.plt
.plist
!= NULL
11008 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11014 if (sym_sec
== NULL
)
11015 /* Ignore other undefined symbols. */
11018 /* Assume branches to other sections not included in the
11019 link need stubs too, to cover -R and absolute syms. */
11020 if (sym_sec
->output_section
== NULL
)
11027 sym_value
= sym
->st_value
;
11030 if (h
->root
.type
!= bfd_link_hash_defined
11031 && h
->root
.type
!= bfd_link_hash_defweak
)
11033 sym_value
= h
->root
.u
.def
.value
;
11035 sym_value
+= rel
->r_addend
;
11037 /* If this branch reloc uses an opd sym, find the code section. */
11038 opd
= get_opd_info (sym_sec
);
11041 if (h
== NULL
&& opd
->adjust
!= NULL
)
11045 adjust
= opd
->adjust
[sym
->st_value
/ 8];
11047 /* Assume deleted functions won't ever be called. */
11049 sym_value
+= adjust
;
11052 dest
= opd_entry_value (sym_sec
, sym_value
,
11053 &sym_sec
, NULL
, FALSE
);
11054 if (dest
== (bfd_vma
) -1)
11059 + sym_sec
->output_offset
11060 + sym_sec
->output_section
->vma
);
11062 /* Ignore branch to self. */
11063 if (sym_sec
== isec
)
11066 /* If the called function uses the toc, we need a stub. */
11067 if (sym_sec
->has_toc_reloc
11068 || sym_sec
->makes_toc_func_call
)
11074 /* Assume any branch that needs a long branch stub might in fact
11075 need a plt_branch stub. A plt_branch stub uses r2. */
11076 else if (dest
- (isec
->output_offset
11077 + isec
->output_section
->vma
11078 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
11084 /* If calling back to a section in the process of being
11085 tested, we can't say for sure that no toc adjusting stubs
11086 are needed, so don't return zero. */
11087 else if (sym_sec
->call_check_in_progress
)
11090 /* Branches to another section that itself doesn't have any TOC
11091 references are OK. Recursively call ourselves to check. */
11092 else if (!sym_sec
->call_check_done
)
11096 /* Mark current section as indeterminate, so that other
11097 sections that call back to current won't be marked as
11099 isec
->call_check_in_progress
= 1;
11100 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11101 isec
->call_check_in_progress
= 0;
11112 if (local_syms
!= NULL
11113 && (elf_symtab_hdr (isec
->owner
).contents
11114 != (unsigned char *) local_syms
))
11116 if (elf_section_data (isec
)->relocs
!= relstart
)
11121 && isec
->map_head
.s
!= NULL
11122 && (strcmp (isec
->output_section
->name
, ".init") == 0
11123 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11125 if (isec
->map_head
.s
->has_toc_reloc
11126 || isec
->map_head
.s
->makes_toc_func_call
)
11128 else if (!isec
->map_head
.s
->call_check_done
)
11131 isec
->call_check_in_progress
= 1;
11132 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11133 isec
->call_check_in_progress
= 0;
11140 isec
->makes_toc_func_call
= 1;
11145 /* The linker repeatedly calls this function for each input section,
11146 in the order that input sections are linked into output sections.
11147 Build lists of input sections to determine groupings between which
11148 we may insert linker stubs. */
11151 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11153 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11158 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11159 && isec
->output_section
->index
<= htab
->top_index
)
11161 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11162 /* Steal the link_sec pointer for our list. */
11163 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11164 /* This happens to make the list in reverse order,
11165 which is what we want. */
11166 PREV_SEC (isec
) = *list
;
11170 if (htab
->multi_toc_needed
)
11172 /* If a code section has a function that uses the TOC then we need
11173 to use the right TOC (obviously). Also, make sure that .opd gets
11174 the correct TOC value for R_PPC64_TOC relocs that don't have or
11175 can't find their function symbol (shouldn't ever happen now).
11176 Also specially treat .fixup for the linux kernel. .fixup
11177 contains branches, but only back to the function that hit an
11179 if (isec
->has_toc_reloc
11180 || (isec
->flags
& SEC_CODE
) == 0
11181 || strcmp (isec
->name
, ".fixup") == 0)
11183 if (elf_gp (isec
->owner
) != 0)
11184 htab
->toc_curr
= elf_gp (isec
->owner
);
11188 if (!isec
->call_check_done
11189 && toc_adjusting_stub_needed (info
, isec
) < 0)
11191 /* If we make a local call from this section, ie. a branch
11192 without a following nop, then we have no place to put a
11193 toc restoring insn. We must use the same toc group as
11195 Testing makes_toc_func_call actually tests for *any*
11196 calls to functions that need a good toc pointer. A more
11197 precise test would be better, as this one will set
11198 incorrect values for pasted .init/.fini fragments.
11199 (Fixed later in check_pasted_section.) */
11200 if (isec
->makes_toc_func_call
11201 && elf_gp (isec
->owner
) != 0)
11202 htab
->toc_curr
= elf_gp (isec
->owner
);
11206 /* Functions that don't use the TOC can belong in any TOC group.
11207 Use the last TOC base. */
11208 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11212 /* Check that all .init and .fini sections use the same toc, if they
11213 have toc relocs. */
11216 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11218 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11222 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11223 bfd_vma toc_off
= 0;
11226 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11227 if (i
->has_toc_reloc
)
11230 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11231 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11236 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11237 if (i
->makes_toc_func_call
)
11239 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11243 /* Make sure the whole pasted function uses the same toc offset. */
11245 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11246 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11252 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11254 return (check_pasted_section (info
, ".init")
11255 & check_pasted_section (info
, ".fini"));
11258 /* See whether we can group stub sections together. Grouping stub
11259 sections may result in fewer stubs. More importantly, we need to
11260 put all .init* and .fini* stubs at the beginning of the .init or
11261 .fini output sections respectively, because glibc splits the
11262 _init and _fini functions into multiple parts. Putting a stub in
11263 the middle of a function is not a good idea. */
11266 group_sections (struct ppc_link_hash_table
*htab
,
11267 bfd_size_type stub_group_size
,
11268 bfd_boolean stubs_always_before_branch
)
11271 bfd_size_type stub14_group_size
;
11272 bfd_boolean suppress_size_errors
;
11274 suppress_size_errors
= FALSE
;
11275 stub14_group_size
= stub_group_size
;
11276 if (stub_group_size
== 1)
11278 /* Default values. */
11279 if (stubs_always_before_branch
)
11281 stub_group_size
= 0x1e00000;
11282 stub14_group_size
= 0x7800;
11286 stub_group_size
= 0x1c00000;
11287 stub14_group_size
= 0x7000;
11289 suppress_size_errors
= TRUE
;
11292 list
= htab
->input_list
+ htab
->top_index
;
11295 asection
*tail
= *list
;
11296 while (tail
!= NULL
)
11300 bfd_size_type total
;
11301 bfd_boolean big_sec
;
11305 total
= tail
->size
;
11306 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11307 && ppc64_elf_section_data (tail
)->has_14bit_branch
11308 ? stub14_group_size
: stub_group_size
);
11309 if (big_sec
&& !suppress_size_errors
)
11310 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11311 tail
->owner
, tail
);
11312 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11314 while ((prev
= PREV_SEC (curr
)) != NULL
11315 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11316 < (ppc64_elf_section_data (prev
) != NULL
11317 && ppc64_elf_section_data (prev
)->has_14bit_branch
11318 ? stub14_group_size
: stub_group_size
))
11319 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11322 /* OK, the size from the start of CURR to the end is less
11323 than stub_group_size and thus can be handled by one stub
11324 section. (or the tail section is itself larger than
11325 stub_group_size, in which case we may be toast.) We
11326 should really be keeping track of the total size of stubs
11327 added here, as stubs contribute to the final output
11328 section size. That's a little tricky, and this way will
11329 only break if stubs added make the total size more than
11330 2^25, ie. for the default stub_group_size, if stubs total
11331 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11334 prev
= PREV_SEC (tail
);
11335 /* Set up this stub group. */
11336 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11338 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11340 /* But wait, there's more! Input sections up to stub_group_size
11341 bytes before the stub section can be handled by it too.
11342 Don't do this if we have a really large section after the
11343 stubs, as adding more stubs increases the chance that
11344 branches may not reach into the stub section. */
11345 if (!stubs_always_before_branch
&& !big_sec
)
11348 while (prev
!= NULL
11349 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11350 < (ppc64_elf_section_data (prev
) != NULL
11351 && ppc64_elf_section_data (prev
)->has_14bit_branch
11352 ? stub14_group_size
: stub_group_size
))
11353 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11356 prev
= PREV_SEC (tail
);
11357 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11363 while (list
-- != htab
->input_list
);
11364 free (htab
->input_list
);
11368 static const unsigned char glink_eh_frame_cie
[] =
11370 0, 0, 0, 16, /* length. */
11371 0, 0, 0, 0, /* id. */
11372 1, /* CIE version. */
11373 'z', 'R', 0, /* Augmentation string. */
11374 4, /* Code alignment. */
11375 0x78, /* Data alignment. */
11377 1, /* Augmentation size. */
11378 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11379 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11382 /* Stripping output sections is normally done before dynamic section
11383 symbols have been allocated. This function is called later, and
11384 handles cases like htab->brlt which is mapped to its own output
11388 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11390 if (isec
->size
== 0
11391 && isec
->output_section
->size
== 0
11392 && !(isec
->output_section
->flags
& SEC_KEEP
)
11393 && !bfd_section_removed_from_list (info
->output_bfd
,
11394 isec
->output_section
)
11395 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11397 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11398 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11399 info
->output_bfd
->section_count
--;
11403 /* Determine and set the size of the stub section for a final link.
11405 The basic idea here is to examine all the relocations looking for
11406 PC-relative calls to a target that is unreachable with a "bl"
11410 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
,
11411 bfd_boolean plt_static_chain
, int plt_thread_safe
,
11412 int plt_stub_align
)
11414 bfd_size_type stub_group_size
;
11415 bfd_boolean stubs_always_before_branch
;
11416 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11421 htab
->plt_static_chain
= plt_static_chain
;
11422 htab
->plt_stub_align
= plt_stub_align
;
11423 if (plt_thread_safe
== -1 && !info
->executable
)
11424 plt_thread_safe
= 1;
11425 if (plt_thread_safe
== -1)
11427 static const char *const thread_starter
[] =
11431 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11433 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11434 "mq_notify", "create_timer",
11438 "GOMP_parallel_start",
11439 "GOMP_parallel_loop_static_start",
11440 "GOMP_parallel_loop_dynamic_start",
11441 "GOMP_parallel_loop_guided_start",
11442 "GOMP_parallel_loop_runtime_start",
11443 "GOMP_parallel_sections_start",
11447 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
11449 struct elf_link_hash_entry
*h
;
11450 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
11451 FALSE
, FALSE
, TRUE
);
11452 plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
11453 if (plt_thread_safe
)
11457 htab
->plt_thread_safe
= plt_thread_safe
;
11458 stubs_always_before_branch
= group_size
< 0;
11459 if (group_size
< 0)
11460 stub_group_size
= -group_size
;
11462 stub_group_size
= group_size
;
11464 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11469 unsigned int bfd_indx
;
11470 asection
*stub_sec
;
11472 htab
->stub_iteration
+= 1;
11474 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11476 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
11478 Elf_Internal_Shdr
*symtab_hdr
;
11480 Elf_Internal_Sym
*local_syms
= NULL
;
11482 if (!is_ppc64_elf (input_bfd
))
11485 /* We'll need the symbol table in a second. */
11486 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11487 if (symtab_hdr
->sh_info
== 0)
11490 /* Walk over each section attached to the input bfd. */
11491 for (section
= input_bfd
->sections
;
11493 section
= section
->next
)
11495 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
11497 /* If there aren't any relocs, then there's nothing more
11499 if ((section
->flags
& SEC_RELOC
) == 0
11500 || (section
->flags
& SEC_ALLOC
) == 0
11501 || (section
->flags
& SEC_LOAD
) == 0
11502 || (section
->flags
& SEC_CODE
) == 0
11503 || section
->reloc_count
== 0)
11506 /* If this section is a link-once section that will be
11507 discarded, then don't create any stubs. */
11508 if (section
->output_section
== NULL
11509 || section
->output_section
->owner
!= info
->output_bfd
)
11512 /* Get the relocs. */
11514 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
11515 info
->keep_memory
);
11516 if (internal_relocs
== NULL
)
11517 goto error_ret_free_local
;
11519 /* Now examine each relocation. */
11520 irela
= internal_relocs
;
11521 irelaend
= irela
+ section
->reloc_count
;
11522 for (; irela
< irelaend
; irela
++)
11524 enum elf_ppc64_reloc_type r_type
;
11525 unsigned int r_indx
;
11526 enum ppc_stub_type stub_type
;
11527 struct ppc_stub_hash_entry
*stub_entry
;
11528 asection
*sym_sec
, *code_sec
;
11529 bfd_vma sym_value
, code_value
;
11530 bfd_vma destination
;
11531 bfd_boolean ok_dest
;
11532 struct ppc_link_hash_entry
*hash
;
11533 struct ppc_link_hash_entry
*fdh
;
11534 struct elf_link_hash_entry
*h
;
11535 Elf_Internal_Sym
*sym
;
11537 const asection
*id_sec
;
11538 struct _opd_sec_data
*opd
;
11539 struct plt_entry
*plt_ent
;
11541 r_type
= ELF64_R_TYPE (irela
->r_info
);
11542 r_indx
= ELF64_R_SYM (irela
->r_info
);
11544 if (r_type
>= R_PPC64_max
)
11546 bfd_set_error (bfd_error_bad_value
);
11547 goto error_ret_free_internal
;
11550 /* Only look for stubs on branch instructions. */
11551 if (r_type
!= R_PPC64_REL24
11552 && r_type
!= R_PPC64_REL14
11553 && r_type
!= R_PPC64_REL14_BRTAKEN
11554 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11557 /* Now determine the call target, its name, value,
11559 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
11560 r_indx
, input_bfd
))
11561 goto error_ret_free_internal
;
11562 hash
= (struct ppc_link_hash_entry
*) h
;
11569 sym_value
= sym
->st_value
;
11572 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
11573 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
11575 sym_value
= hash
->elf
.root
.u
.def
.value
;
11576 if (sym_sec
->output_section
!= NULL
)
11579 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
11580 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
11582 /* Recognise an old ABI func code entry sym, and
11583 use the func descriptor sym instead if it is
11585 if (hash
->elf
.root
.root
.string
[0] == '.'
11586 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
11588 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
11589 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
11591 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
11592 sym_value
= fdh
->elf
.root
.u
.def
.value
;
11593 if (sym_sec
->output_section
!= NULL
)
11602 bfd_set_error (bfd_error_bad_value
);
11603 goto error_ret_free_internal
;
11609 sym_value
+= irela
->r_addend
;
11610 destination
= (sym_value
11611 + sym_sec
->output_offset
11612 + sym_sec
->output_section
->vma
);
11615 code_sec
= sym_sec
;
11616 code_value
= sym_value
;
11617 opd
= get_opd_info (sym_sec
);
11622 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11624 long adjust
= opd
->adjust
[sym_value
/ 8];
11627 code_value
+= adjust
;
11628 sym_value
+= adjust
;
11630 dest
= opd_entry_value (sym_sec
, sym_value
,
11631 &code_sec
, &code_value
, FALSE
);
11632 if (dest
!= (bfd_vma
) -1)
11634 destination
= dest
;
11637 /* Fixup old ABI sym to point at code
11639 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11640 hash
->elf
.root
.u
.def
.section
= code_sec
;
11641 hash
->elf
.root
.u
.def
.value
= code_value
;
11646 /* Determine what (if any) linker stub is needed. */
11648 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11649 &plt_ent
, destination
);
11651 if (stub_type
!= ppc_stub_plt_call
)
11653 /* Check whether we need a TOC adjusting stub.
11654 Since the linker pastes together pieces from
11655 different object files when creating the
11656 _init and _fini functions, it may be that a
11657 call to what looks like a local sym is in
11658 fact a call needing a TOC adjustment. */
11659 if (code_sec
!= NULL
11660 && code_sec
->output_section
!= NULL
11661 && (htab
->stub_group
[code_sec
->id
].toc_off
11662 != htab
->stub_group
[section
->id
].toc_off
)
11663 && (code_sec
->has_toc_reloc
11664 || code_sec
->makes_toc_func_call
))
11665 stub_type
= ppc_stub_long_branch_r2off
;
11668 if (stub_type
== ppc_stub_none
)
11671 /* __tls_get_addr calls might be eliminated. */
11672 if (stub_type
!= ppc_stub_plt_call
11674 && (hash
== htab
->tls_get_addr
11675 || hash
== htab
->tls_get_addr_fd
)
11676 && section
->has_tls_reloc
11677 && irela
!= internal_relocs
)
11679 /* Get tls info. */
11680 unsigned char *tls_mask
;
11682 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11683 irela
- 1, input_bfd
))
11684 goto error_ret_free_internal
;
11685 if (*tls_mask
!= 0)
11689 if (stub_type
== ppc_stub_plt_call
11690 && irela
+ 1 < irelaend
11691 && irela
[1].r_offset
== irela
->r_offset
+ 4
11692 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
11694 if (!tocsave_find (htab
, INSERT
,
11695 &local_syms
, irela
+ 1, input_bfd
))
11696 goto error_ret_free_internal
;
11698 else if (stub_type
== ppc_stub_plt_call
)
11699 stub_type
= ppc_stub_plt_call_r2save
;
11701 /* Support for grouping stub sections. */
11702 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11704 /* Get the name of this stub. */
11705 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11707 goto error_ret_free_internal
;
11709 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11710 stub_name
, FALSE
, FALSE
);
11711 if (stub_entry
!= NULL
)
11713 /* The proper stub has already been created. */
11715 if (stub_type
== ppc_stub_plt_call_r2save
)
11716 stub_entry
->stub_type
= stub_type
;
11720 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
11721 if (stub_entry
== NULL
)
11724 error_ret_free_internal
:
11725 if (elf_section_data (section
)->relocs
== NULL
)
11726 free (internal_relocs
);
11727 error_ret_free_local
:
11728 if (local_syms
!= NULL
11729 && (symtab_hdr
->contents
11730 != (unsigned char *) local_syms
))
11735 stub_entry
->stub_type
= stub_type
;
11736 if (stub_type
!= ppc_stub_plt_call
11737 && stub_type
!= ppc_stub_plt_call_r2save
)
11739 stub_entry
->target_value
= code_value
;
11740 stub_entry
->target_section
= code_sec
;
11744 stub_entry
->target_value
= sym_value
;
11745 stub_entry
->target_section
= sym_sec
;
11747 stub_entry
->h
= hash
;
11748 stub_entry
->plt_ent
= plt_ent
;
11750 if (stub_entry
->h
!= NULL
)
11751 htab
->stub_globals
+= 1;
11754 /* We're done with the internal relocs, free them. */
11755 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11756 free (internal_relocs
);
11759 if (local_syms
!= NULL
11760 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11762 if (!info
->keep_memory
)
11765 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11769 /* We may have added some stubs. Find out the new size of the
11771 for (stub_sec
= htab
->stub_bfd
->sections
;
11773 stub_sec
= stub_sec
->next
)
11774 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11776 stub_sec
->rawsize
= stub_sec
->size
;
11777 stub_sec
->size
= 0;
11778 stub_sec
->reloc_count
= 0;
11779 stub_sec
->flags
&= ~SEC_RELOC
;
11782 htab
->brlt
->size
= 0;
11783 htab
->brlt
->reloc_count
= 0;
11784 htab
->brlt
->flags
&= ~SEC_RELOC
;
11785 if (htab
->relbrlt
!= NULL
)
11786 htab
->relbrlt
->size
= 0;
11788 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11790 if (info
->emitrelocations
11791 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11793 htab
->glink
->reloc_count
= 1;
11794 htab
->glink
->flags
|= SEC_RELOC
;
11797 if (htab
->glink_eh_frame
!= NULL
11798 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
11799 && htab
->glink_eh_frame
->output_section
->size
!= 0)
11801 size_t size
= 0, align
;
11803 for (stub_sec
= htab
->stub_bfd
->sections
;
11805 stub_sec
= stub_sec
->next
)
11806 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11808 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11811 size
+= sizeof (glink_eh_frame_cie
);
11813 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
11815 size
= (size
+ align
) & ~align
;
11816 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
11817 htab
->glink_eh_frame
->size
= size
;
11820 if (htab
->plt_stub_align
!= 0)
11821 for (stub_sec
= htab
->stub_bfd
->sections
;
11823 stub_sec
= stub_sec
->next
)
11824 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11825 stub_sec
->size
= ((stub_sec
->size
+ (1 << htab
->plt_stub_align
) - 1)
11826 & (-1 << htab
->plt_stub_align
));
11828 for (stub_sec
= htab
->stub_bfd
->sections
;
11830 stub_sec
= stub_sec
->next
)
11831 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11832 && stub_sec
->rawsize
!= stub_sec
->size
)
11835 /* Exit from this loop when no stubs have been added, and no stubs
11836 have changed size. */
11837 if (stub_sec
== NULL
11838 && (htab
->glink_eh_frame
== NULL
11839 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
11842 /* Ask the linker to do its stuff. */
11843 (*htab
->layout_sections_again
) ();
11846 maybe_strip_output (info
, htab
->brlt
);
11847 if (htab
->glink_eh_frame
!= NULL
)
11848 maybe_strip_output (info
, htab
->glink_eh_frame
);
11853 /* Called after we have determined section placement. If sections
11854 move, we'll be called again. Provide a value for TOCstart. */
11857 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
11862 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11863 order. The TOC starts where the first of these sections starts. */
11864 s
= bfd_get_section_by_name (obfd
, ".got");
11865 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11866 s
= bfd_get_section_by_name (obfd
, ".toc");
11867 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11868 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11869 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11870 s
= bfd_get_section_by_name (obfd
, ".plt");
11871 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11873 /* This may happen for
11874 o references to TOC base (SYM@toc / TOC[tc0]) without a
11876 o bad linker script
11877 o --gc-sections and empty TOC sections
11879 FIXME: Warn user? */
11881 /* Look for a likely section. We probably won't even be
11883 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11884 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11886 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11889 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11890 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11891 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11894 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11895 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11899 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11900 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11906 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11908 _bfd_set_gp_value (obfd
, TOCstart
);
11910 if (info
!= NULL
&& s
!= NULL
&& is_ppc64_elf (obfd
))
11912 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11915 && htab
->elf
.hgot
!= NULL
)
11917 htab
->elf
.hgot
->type
= STT_OBJECT
;
11918 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
11919 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
11920 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
11926 /* Build all the stubs associated with the current output file.
11927 The stubs are kept in a hash table attached to the main linker
11928 hash table. This function is called via gldelf64ppc_finish. */
11931 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11932 struct bfd_link_info
*info
,
11935 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11936 asection
*stub_sec
;
11938 int stub_sec_count
= 0;
11943 htab
->emit_stub_syms
= emit_stub_syms
;
11945 /* Allocate memory to hold the linker stubs. */
11946 for (stub_sec
= htab
->stub_bfd
->sections
;
11948 stub_sec
= stub_sec
->next
)
11949 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11950 && stub_sec
->size
!= 0)
11952 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11953 if (stub_sec
->contents
== NULL
)
11955 /* We want to check that built size is the same as calculated
11956 size. rawsize is a convenient location to use. */
11957 stub_sec
->rawsize
= stub_sec
->size
;
11958 stub_sec
->size
= 0;
11961 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11966 /* Build the .glink plt call stub. */
11967 if (htab
->emit_stub_syms
)
11969 struct elf_link_hash_entry
*h
;
11970 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11971 TRUE
, FALSE
, FALSE
);
11974 if (h
->root
.type
== bfd_link_hash_new
)
11976 h
->root
.type
= bfd_link_hash_defined
;
11977 h
->root
.u
.def
.section
= htab
->glink
;
11978 h
->root
.u
.def
.value
= 8;
11979 h
->ref_regular
= 1;
11980 h
->def_regular
= 1;
11981 h
->ref_regular_nonweak
= 1;
11982 h
->forced_local
= 1;
11986 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11987 if (info
->emitrelocations
)
11989 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11992 r
->r_offset
= (htab
->glink
->output_offset
11993 + htab
->glink
->output_section
->vma
);
11994 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11995 r
->r_addend
= plt0
;
11997 p
= htab
->glink
->contents
;
11998 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11999 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12001 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12003 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12005 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12007 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
12009 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12011 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
12013 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
12015 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
12017 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
12019 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
12021 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12023 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12025 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12029 /* Build the .glink lazy link call stubs. */
12031 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
12035 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12040 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12042 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
12045 bfd_put_32 (htab
->glink
->owner
,
12046 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12050 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
12053 if (htab
->brlt
->size
!= 0)
12055 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12057 if (htab
->brlt
->contents
== NULL
)
12060 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12062 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12063 htab
->relbrlt
->size
);
12064 if (htab
->relbrlt
->contents
== NULL
)
12068 if (htab
->glink_eh_frame
!= NULL
12069 && htab
->glink_eh_frame
->size
!= 0)
12072 bfd_byte
*last_fde
;
12073 size_t last_fde_len
, size
, align
, pad
;
12075 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12078 htab
->glink_eh_frame
->contents
= p
;
12081 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12083 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12084 /* CIE length (rewrite in case little-endian). */
12085 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12086 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12087 p
+= sizeof (glink_eh_frame_cie
);
12089 for (stub_sec
= htab
->stub_bfd
->sections
;
12091 stub_sec
= stub_sec
->next
)
12092 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12097 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
12100 val
= p
- htab
->glink_eh_frame
->contents
;
12101 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12103 /* Offset to stub section. */
12104 val
= (stub_sec
->output_section
->vma
12105 + stub_sec
->output_offset
);
12106 val
-= (htab
->glink_eh_frame
->output_section
->vma
12107 + htab
->glink_eh_frame
->output_offset
);
12108 val
-= p
- htab
->glink_eh_frame
->contents
;
12109 if (val
+ 0x80000000 > 0xffffffff)
12111 info
->callbacks
->einfo
12112 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12116 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12118 /* stub section size. */
12119 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
12121 /* Augmentation. */
12126 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12131 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12134 val
= p
- htab
->glink_eh_frame
->contents
;
12135 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12137 /* Offset to .glink. */
12138 val
= (htab
->glink
->output_section
->vma
12139 + htab
->glink
->output_offset
12141 val
-= (htab
->glink_eh_frame
->output_section
->vma
12142 + htab
->glink_eh_frame
->output_offset
);
12143 val
-= p
- htab
->glink_eh_frame
->contents
;
12144 if (val
+ 0x80000000 > 0xffffffff)
12146 info
->callbacks
->einfo
12147 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12148 htab
->glink
->name
);
12151 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12154 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->rawsize
- 8, p
);
12156 /* Augmentation. */
12159 *p
++ = DW_CFA_advance_loc
+ 1;
12160 *p
++ = DW_CFA_register
;
12163 *p
++ = DW_CFA_advance_loc
+ 4;
12164 *p
++ = DW_CFA_restore_extended
;
12167 /* Subsume any padding into the last FDE if user .eh_frame
12168 sections are aligned more than glink_eh_frame. Otherwise any
12169 zero padding will be seen as a terminator. */
12170 size
= p
- htab
->glink_eh_frame
->contents
;
12172 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12174 pad
= ((size
+ align
) & ~align
) - size
;
12175 htab
->glink_eh_frame
->size
= size
+ pad
;
12176 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12179 /* Build the stubs as directed by the stub hash table. */
12180 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12182 if (htab
->relbrlt
!= NULL
)
12183 htab
->relbrlt
->reloc_count
= 0;
12185 if (htab
->plt_stub_align
!= 0)
12186 for (stub_sec
= htab
->stub_bfd
->sections
;
12188 stub_sec
= stub_sec
->next
)
12189 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12190 stub_sec
->size
= ((stub_sec
->size
+ (1 << htab
->plt_stub_align
) - 1)
12191 & (-1 << htab
->plt_stub_align
));
12193 for (stub_sec
= htab
->stub_bfd
->sections
;
12195 stub_sec
= stub_sec
->next
)
12196 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12198 stub_sec_count
+= 1;
12199 if (stub_sec
->rawsize
!= stub_sec
->size
)
12203 if (stub_sec
!= NULL
12204 || htab
->glink
->rawsize
!= htab
->glink
->size
12205 || (htab
->glink_eh_frame
!= NULL
12206 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12208 htab
->stub_error
= TRUE
;
12209 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12212 if (htab
->stub_error
)
12217 *stats
= bfd_malloc (500);
12218 if (*stats
== NULL
)
12221 sprintf (*stats
, _("linker stubs in %u group%s\n"
12223 " toc adjust %lu\n"
12224 " long branch %lu\n"
12225 " long toc adj %lu\n"
12227 " plt call toc %lu"),
12229 stub_sec_count
== 1 ? "" : "s",
12230 htab
->stub_count
[ppc_stub_long_branch
- 1],
12231 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12232 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12233 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12234 htab
->stub_count
[ppc_stub_plt_call
- 1],
12235 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1]);
12240 /* This function undoes the changes made by add_symbol_adjust. */
12243 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12245 struct ppc_link_hash_entry
*eh
;
12247 if (h
->root
.type
== bfd_link_hash_indirect
)
12250 eh
= (struct ppc_link_hash_entry
*) h
;
12251 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12254 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12259 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12261 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12264 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12267 /* What to do when ld finds relocations against symbols defined in
12268 discarded sections. */
12270 static unsigned int
12271 ppc64_elf_action_discarded (asection
*sec
)
12273 if (strcmp (".opd", sec
->name
) == 0)
12276 if (strcmp (".toc", sec
->name
) == 0)
12279 if (strcmp (".toc1", sec
->name
) == 0)
12282 return _bfd_elf_default_action_discarded (sec
);
12285 /* The RELOCATE_SECTION function is called by the ELF backend linker
12286 to handle the relocations for a section.
12288 The relocs are always passed as Rela structures; if the section
12289 actually uses Rel structures, the r_addend field will always be
12292 This function is responsible for adjust the section contents as
12293 necessary, and (if using Rela relocs and generating a
12294 relocatable output file) adjusting the reloc addend as
12297 This function does not have to worry about setting the reloc
12298 address or the reloc symbol index.
12300 LOCAL_SYMS is a pointer to the swapped in local symbols.
12302 LOCAL_SECTIONS is an array giving the section in the input file
12303 corresponding to the st_shndx field of each local symbol.
12305 The global hash table entry for the global symbols can be found
12306 via elf_sym_hashes (input_bfd).
12308 When generating relocatable output, this function must handle
12309 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12310 going to be the section symbol corresponding to the output
12311 section, which means that the addend must be adjusted
12315 ppc64_elf_relocate_section (bfd
*output_bfd
,
12316 struct bfd_link_info
*info
,
12318 asection
*input_section
,
12319 bfd_byte
*contents
,
12320 Elf_Internal_Rela
*relocs
,
12321 Elf_Internal_Sym
*local_syms
,
12322 asection
**local_sections
)
12324 struct ppc_link_hash_table
*htab
;
12325 Elf_Internal_Shdr
*symtab_hdr
;
12326 struct elf_link_hash_entry
**sym_hashes
;
12327 Elf_Internal_Rela
*rel
;
12328 Elf_Internal_Rela
*relend
;
12329 Elf_Internal_Rela outrel
;
12331 struct got_entry
**local_got_ents
;
12333 bfd_boolean ret
= TRUE
;
12334 bfd_boolean is_opd
;
12335 /* Assume 'at' branch hints. */
12336 bfd_boolean is_isa_v2
= TRUE
;
12337 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
12339 /* Initialize howto table if needed. */
12340 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
12343 htab
= ppc_hash_table (info
);
12347 /* Don't relocate stub sections. */
12348 if (input_section
->owner
== htab
->stub_bfd
)
12351 BFD_ASSERT (is_ppc64_elf (input_bfd
));
12353 local_got_ents
= elf_local_got_ents (input_bfd
);
12354 TOCstart
= elf_gp (output_bfd
);
12355 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12356 sym_hashes
= elf_sym_hashes (input_bfd
);
12357 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
12360 relend
= relocs
+ input_section
->reloc_count
;
12361 for (; rel
< relend
; rel
++)
12363 enum elf_ppc64_reloc_type r_type
;
12365 bfd_reloc_status_type r
;
12366 Elf_Internal_Sym
*sym
;
12368 struct elf_link_hash_entry
*h_elf
;
12369 struct ppc_link_hash_entry
*h
;
12370 struct ppc_link_hash_entry
*fdh
;
12371 const char *sym_name
;
12372 unsigned long r_symndx
, toc_symndx
;
12373 bfd_vma toc_addend
;
12374 unsigned char tls_mask
, tls_gd
, tls_type
;
12375 unsigned char sym_type
;
12376 bfd_vma relocation
;
12377 bfd_boolean unresolved_reloc
;
12378 bfd_boolean warned
;
12379 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
12382 struct ppc_stub_hash_entry
*stub_entry
;
12383 bfd_vma max_br_offset
;
12385 const Elf_Internal_Rela orig_rel
= *rel
;
12387 r_type
= ELF64_R_TYPE (rel
->r_info
);
12388 r_symndx
= ELF64_R_SYM (rel
->r_info
);
12390 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12391 symbol of the previous ADDR64 reloc. The symbol gives us the
12392 proper TOC base to use. */
12393 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
12395 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
12397 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
12403 unresolved_reloc
= FALSE
;
12406 if (r_symndx
< symtab_hdr
->sh_info
)
12408 /* It's a local symbol. */
12409 struct _opd_sec_data
*opd
;
12411 sym
= local_syms
+ r_symndx
;
12412 sec
= local_sections
[r_symndx
];
12413 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
12414 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
12415 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
12416 opd
= get_opd_info (sec
);
12417 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
12419 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
12424 /* If this is a relocation against the opd section sym
12425 and we have edited .opd, adjust the reloc addend so
12426 that ld -r and ld --emit-relocs output is correct.
12427 If it is a reloc against some other .opd symbol,
12428 then the symbol value will be adjusted later. */
12429 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
12430 rel
->r_addend
+= adjust
;
12432 relocation
+= adjust
;
12438 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
12439 r_symndx
, symtab_hdr
, sym_hashes
,
12440 h_elf
, sec
, relocation
,
12441 unresolved_reloc
, warned
);
12442 sym_name
= h_elf
->root
.root
.string
;
12443 sym_type
= h_elf
->type
;
12445 && sec
->owner
== output_bfd
12446 && strcmp (sec
->name
, ".opd") == 0)
12448 /* This is a symbol defined in a linker script. All
12449 such are defined in output sections, even those
12450 defined by simple assignment from a symbol defined in
12451 an input section. Transfer the symbol to an
12452 appropriate input .opd section, so that a branch to
12453 this symbol will be mapped to the location specified
12454 by the opd entry. */
12455 struct bfd_link_order
*lo
;
12456 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
12457 if (lo
->type
== bfd_indirect_link_order
)
12459 asection
*isec
= lo
->u
.indirect
.section
;
12460 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
12461 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
12464 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
12465 h_elf
->root
.u
.def
.section
= isec
;
12472 h
= (struct ppc_link_hash_entry
*) h_elf
;
12474 if (sec
!= NULL
&& discarded_section (sec
))
12475 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
12477 ppc64_elf_howto_table
[r_type
], 0,
12480 if (info
->relocatable
)
12483 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
12485 relocation
= (TOCstart
12486 + htab
->stub_group
[input_section
->id
].toc_off
);
12487 sec
= bfd_abs_section_ptr
;
12488 unresolved_reloc
= FALSE
;
12491 /* TLS optimizations. Replace instruction sequences and relocs
12492 based on information we collected in tls_optimize. We edit
12493 RELOCS so that --emit-relocs will output something sensible
12494 for the final instruction stream. */
12499 tls_mask
= h
->tls_mask
;
12500 else if (local_got_ents
!= NULL
)
12502 struct plt_entry
**local_plt
= (struct plt_entry
**)
12503 (local_got_ents
+ symtab_hdr
->sh_info
);
12504 unsigned char *lgot_masks
= (unsigned char *)
12505 (local_plt
+ symtab_hdr
->sh_info
);
12506 tls_mask
= lgot_masks
[r_symndx
];
12509 && (r_type
== R_PPC64_TLS
12510 || r_type
== R_PPC64_TLSGD
12511 || r_type
== R_PPC64_TLSLD
))
12513 /* Check for toc tls entries. */
12514 unsigned char *toc_tls
;
12516 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12517 &local_syms
, rel
, input_bfd
))
12521 tls_mask
= *toc_tls
;
12524 /* Check that tls relocs are used with tls syms, and non-tls
12525 relocs are used with non-tls syms. */
12526 if (r_symndx
!= STN_UNDEF
12527 && r_type
!= R_PPC64_NONE
12529 || h
->elf
.root
.type
== bfd_link_hash_defined
12530 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
12531 && (IS_PPC64_TLS_RELOC (r_type
)
12532 != (sym_type
== STT_TLS
12533 || (sym_type
== STT_SECTION
12534 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
12537 && (r_type
== R_PPC64_TLS
12538 || r_type
== R_PPC64_TLSGD
12539 || r_type
== R_PPC64_TLSLD
))
12540 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12543 info
->callbacks
->einfo
12544 (!IS_PPC64_TLS_RELOC (r_type
)
12545 ? _("%P: %H: %s used with TLS symbol `%T'\n")
12546 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
12547 input_bfd
, input_section
, rel
->r_offset
,
12548 ppc64_elf_howto_table
[r_type
]->name
,
12552 /* Ensure reloc mapping code below stays sane. */
12553 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
12554 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
12555 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
12556 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
12557 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
12558 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
12559 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
12560 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
12561 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
12562 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
12570 case R_PPC64_LO_DS_OPT
:
12571 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12572 if ((insn
& (0x3f << 26)) != 58u << 26)
12574 insn
+= (14u << 26) - (58u << 26);
12575 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12576 r_type
= R_PPC64_TOC16_LO
;
12577 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12580 case R_PPC64_TOC16
:
12581 case R_PPC64_TOC16_LO
:
12582 case R_PPC64_TOC16_DS
:
12583 case R_PPC64_TOC16_LO_DS
:
12585 /* Check for toc tls entries. */
12586 unsigned char *toc_tls
;
12589 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
12590 &local_syms
, rel
, input_bfd
);
12596 tls_mask
= *toc_tls
;
12597 if (r_type
== R_PPC64_TOC16_DS
12598 || r_type
== R_PPC64_TOC16_LO_DS
)
12601 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
12606 /* If we found a GD reloc pair, then we might be
12607 doing a GD->IE transition. */
12610 tls_gd
= TLS_TPRELGD
;
12611 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12614 else if (retval
== 3)
12616 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12624 case R_PPC64_GOT_TPREL16_HI
:
12625 case R_PPC64_GOT_TPREL16_HA
:
12627 && (tls_mask
& TLS_TPREL
) == 0)
12629 rel
->r_offset
-= d_offset
;
12630 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12631 r_type
= R_PPC64_NONE
;
12632 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12636 case R_PPC64_GOT_TPREL16_DS
:
12637 case R_PPC64_GOT_TPREL16_LO_DS
:
12639 && (tls_mask
& TLS_TPREL
) == 0)
12642 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
12644 insn
|= 0x3c0d0000; /* addis 0,13,0 */
12645 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
12646 r_type
= R_PPC64_TPREL16_HA
;
12647 if (toc_symndx
!= 0)
12649 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12650 rel
->r_addend
= toc_addend
;
12651 /* We changed the symbol. Start over in order to
12652 get h, sym, sec etc. right. */
12657 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12663 && (tls_mask
& TLS_TPREL
) == 0)
12665 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
12666 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
12669 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12670 /* Was PPC64_TLS which sits on insn boundary, now
12671 PPC64_TPREL16_LO which is at low-order half-word. */
12672 rel
->r_offset
+= d_offset
;
12673 r_type
= R_PPC64_TPREL16_LO
;
12674 if (toc_symndx
!= 0)
12676 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
12677 rel
->r_addend
= toc_addend
;
12678 /* We changed the symbol. Start over in order to
12679 get h, sym, sec etc. right. */
12684 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12688 case R_PPC64_GOT_TLSGD16_HI
:
12689 case R_PPC64_GOT_TLSGD16_HA
:
12690 tls_gd
= TLS_TPRELGD
;
12691 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12695 case R_PPC64_GOT_TLSLD16_HI
:
12696 case R_PPC64_GOT_TLSLD16_HA
:
12697 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12700 if ((tls_mask
& tls_gd
) != 0)
12701 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12702 + R_PPC64_GOT_TPREL16_DS
);
12705 rel
->r_offset
-= d_offset
;
12706 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12707 r_type
= R_PPC64_NONE
;
12709 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12713 case R_PPC64_GOT_TLSGD16
:
12714 case R_PPC64_GOT_TLSGD16_LO
:
12715 tls_gd
= TLS_TPRELGD
;
12716 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12720 case R_PPC64_GOT_TLSLD16
:
12721 case R_PPC64_GOT_TLSLD16_LO
:
12722 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12724 unsigned int insn1
, insn2
, insn3
;
12728 offset
= (bfd_vma
) -1;
12729 /* If not using the newer R_PPC64_TLSGD/LD to mark
12730 __tls_get_addr calls, we must trust that the call
12731 stays with its arg setup insns, ie. that the next
12732 reloc is the __tls_get_addr call associated with
12733 the current reloc. Edit both insns. */
12734 if (input_section
->has_tls_get_addr_call
12735 && rel
+ 1 < relend
12736 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
12737 htab
->tls_get_addr
,
12738 htab
->tls_get_addr_fd
))
12739 offset
= rel
[1].r_offset
;
12740 if ((tls_mask
& tls_gd
) != 0)
12743 insn1
= bfd_get_32 (output_bfd
,
12744 contents
+ rel
->r_offset
- d_offset
);
12745 insn1
&= (1 << 26) - (1 << 2);
12746 insn1
|= 58 << 26; /* ld */
12747 insn2
= 0x7c636a14; /* add 3,3,13 */
12748 if (offset
!= (bfd_vma
) -1)
12749 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12750 if ((tls_mask
& TLS_EXPLICIT
) == 0)
12751 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
12752 + R_PPC64_GOT_TPREL16_DS
);
12754 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
12755 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12760 insn1
= 0x3c6d0000; /* addis 3,13,0 */
12761 insn2
= 0x38630000; /* addi 3,3,0 */
12764 /* Was an LD reloc. */
12766 sec
= local_sections
[toc_symndx
];
12768 r_symndx
< symtab_hdr
->sh_info
;
12770 if (local_sections
[r_symndx
] == sec
)
12772 if (r_symndx
>= symtab_hdr
->sh_info
)
12773 r_symndx
= STN_UNDEF
;
12774 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12775 if (r_symndx
!= STN_UNDEF
)
12776 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12777 + sec
->output_offset
12778 + sec
->output_section
->vma
);
12780 else if (toc_symndx
!= 0)
12782 r_symndx
= toc_symndx
;
12783 rel
->r_addend
= toc_addend
;
12785 r_type
= R_PPC64_TPREL16_HA
;
12786 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12787 if (offset
!= (bfd_vma
) -1)
12789 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12790 R_PPC64_TPREL16_LO
);
12791 rel
[1].r_offset
= offset
+ d_offset
;
12792 rel
[1].r_addend
= rel
->r_addend
;
12795 bfd_put_32 (output_bfd
, insn1
,
12796 contents
+ rel
->r_offset
- d_offset
);
12797 if (offset
!= (bfd_vma
) -1)
12799 insn3
= bfd_get_32 (output_bfd
,
12800 contents
+ offset
+ 4);
12802 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12804 rel
[1].r_offset
+= 4;
12805 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12808 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12810 if ((tls_mask
& tls_gd
) == 0
12811 && (tls_gd
== 0 || toc_symndx
!= 0))
12813 /* We changed the symbol. Start over in order
12814 to get h, sym, sec etc. right. */
12821 case R_PPC64_TLSGD
:
12822 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12824 unsigned int insn2
, insn3
;
12825 bfd_vma offset
= rel
->r_offset
;
12827 if ((tls_mask
& TLS_TPRELGD
) != 0)
12830 r_type
= R_PPC64_NONE
;
12831 insn2
= 0x7c636a14; /* add 3,3,13 */
12836 if (toc_symndx
!= 0)
12838 r_symndx
= toc_symndx
;
12839 rel
->r_addend
= toc_addend
;
12841 r_type
= R_PPC64_TPREL16_LO
;
12842 rel
->r_offset
= offset
+ d_offset
;
12843 insn2
= 0x38630000; /* addi 3,3,0 */
12845 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12846 /* Zap the reloc on the _tls_get_addr call too. */
12847 BFD_ASSERT (offset
== rel
[1].r_offset
);
12848 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12849 insn3
= bfd_get_32 (output_bfd
,
12850 contents
+ offset
+ 4);
12852 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12854 rel
->r_offset
+= 4;
12855 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12858 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12859 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12867 case R_PPC64_TLSLD
:
12868 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12870 unsigned int insn2
, insn3
;
12871 bfd_vma offset
= rel
->r_offset
;
12874 sec
= local_sections
[toc_symndx
];
12876 r_symndx
< symtab_hdr
->sh_info
;
12878 if (local_sections
[r_symndx
] == sec
)
12880 if (r_symndx
>= symtab_hdr
->sh_info
)
12881 r_symndx
= STN_UNDEF
;
12882 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12883 if (r_symndx
!= STN_UNDEF
)
12884 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12885 + sec
->output_offset
12886 + sec
->output_section
->vma
);
12888 r_type
= R_PPC64_TPREL16_LO
;
12889 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12890 rel
->r_offset
= offset
+ d_offset
;
12891 /* Zap the reloc on the _tls_get_addr call too. */
12892 BFD_ASSERT (offset
== rel
[1].r_offset
);
12893 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12894 insn2
= 0x38630000; /* addi 3,3,0 */
12895 insn3
= bfd_get_32 (output_bfd
,
12896 contents
+ offset
+ 4);
12898 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12900 rel
->r_offset
+= 4;
12901 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12904 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12910 case R_PPC64_DTPMOD64
:
12911 if (rel
+ 1 < relend
12912 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12913 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12915 if ((tls_mask
& TLS_GD
) == 0)
12917 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12918 if ((tls_mask
& TLS_TPRELGD
) != 0)
12919 r_type
= R_PPC64_TPREL64
;
12922 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12923 r_type
= R_PPC64_NONE
;
12925 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12930 if ((tls_mask
& TLS_LD
) == 0)
12932 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12933 r_type
= R_PPC64_NONE
;
12934 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12939 case R_PPC64_TPREL64
:
12940 if ((tls_mask
& TLS_TPREL
) == 0)
12942 r_type
= R_PPC64_NONE
;
12943 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12948 /* Handle other relocations that tweak non-addend part of insn. */
12950 max_br_offset
= 1 << 25;
12951 addend
= rel
->r_addend
;
12952 reloc_dest
= DEST_NORMAL
;
12958 case R_PPC64_TOCSAVE
:
12959 if (relocation
+ addend
== (rel
->r_offset
12960 + input_section
->output_offset
12961 + input_section
->output_section
->vma
)
12962 && tocsave_find (htab
, NO_INSERT
,
12963 &local_syms
, rel
, input_bfd
))
12965 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12967 || insn
== CROR_151515
|| insn
== CROR_313131
)
12968 bfd_put_32 (input_bfd
, STD_R2_40R1
,
12969 contents
+ rel
->r_offset
);
12973 /* Branch taken prediction relocations. */
12974 case R_PPC64_ADDR14_BRTAKEN
:
12975 case R_PPC64_REL14_BRTAKEN
:
12976 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12979 /* Branch not taken prediction relocations. */
12980 case R_PPC64_ADDR14_BRNTAKEN
:
12981 case R_PPC64_REL14_BRNTAKEN
:
12982 insn
|= bfd_get_32 (output_bfd
,
12983 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12986 case R_PPC64_REL14
:
12987 max_br_offset
= 1 << 15;
12990 case R_PPC64_REL24
:
12991 /* Calls to functions with a different TOC, such as calls to
12992 shared objects, need to alter the TOC pointer. This is
12993 done using a linkage stub. A REL24 branching to these
12994 linkage stubs needs to be followed by a nop, as the nop
12995 will be replaced with an instruction to restore the TOC
13000 && h
->oh
->is_func_descriptor
)
13001 fdh
= ppc_follow_link (h
->oh
);
13002 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13004 if (stub_entry
!= NULL
13005 && (stub_entry
->stub_type
== ppc_stub_plt_call
13006 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13007 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13008 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13010 bfd_boolean can_plt_call
= FALSE
;
13012 /* All of these stubs will modify r2, so there must be a
13013 branch and link followed by a nop. The nop is
13014 replaced by an insn to restore r2. */
13015 if (rel
->r_offset
+ 8 <= input_section
->size
)
13019 br
= bfd_get_32 (input_bfd
,
13020 contents
+ rel
->r_offset
);
13025 nop
= bfd_get_32 (input_bfd
,
13026 contents
+ rel
->r_offset
+ 4);
13028 || nop
== CROR_151515
|| nop
== CROR_313131
)
13031 && (h
== htab
->tls_get_addr_fd
13032 || h
== htab
->tls_get_addr
)
13033 && !htab
->no_tls_get_addr_opt
)
13035 /* Special stub used, leave nop alone. */
13038 bfd_put_32 (input_bfd
, LD_R2_40R1
,
13039 contents
+ rel
->r_offset
+ 4);
13040 can_plt_call
= TRUE
;
13045 if (!can_plt_call
&& h
!= NULL
)
13047 const char *name
= h
->elf
.root
.root
.string
;
13052 if (strncmp (name
, "__libc_start_main", 17) == 0
13053 && (name
[17] == 0 || name
[17] == '@'))
13055 /* Allow crt1 branch to go via a toc adjusting
13056 stub. Other calls that never return could do
13057 the same, if we could detect such. */
13058 can_plt_call
= TRUE
;
13064 /* g++ as of 20130507 emits self-calls without a
13065 following nop. This is arguably wrong since we
13066 have conflicting information. On the one hand a
13067 global symbol and on the other a local call
13068 sequence, but don't error for this special case.
13069 It isn't possible to cheaply verify we have
13070 exactly such a call. Allow all calls to the same
13072 asection
*code_sec
= sec
;
13074 if (get_opd_info (sec
) != NULL
)
13076 bfd_vma off
= (relocation
+ addend
13077 - sec
->output_section
->vma
13078 - sec
->output_offset
);
13080 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13082 if (code_sec
== input_section
)
13083 can_plt_call
= TRUE
;
13088 info
->callbacks
->einfo
13089 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13090 "recompile with -fPIC"),
13091 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13093 bfd_set_error (bfd_error_bad_value
);
13098 && (stub_entry
->stub_type
== ppc_stub_plt_call
13099 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13100 unresolved_reloc
= FALSE
;
13103 if ((stub_entry
== NULL
13104 || stub_entry
->stub_type
== ppc_stub_long_branch
13105 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13106 && get_opd_info (sec
) != NULL
)
13108 /* The branch destination is the value of the opd entry. */
13109 bfd_vma off
= (relocation
+ addend
13110 - sec
->output_section
->vma
13111 - sec
->output_offset
);
13112 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13113 if (dest
!= (bfd_vma
) -1)
13117 reloc_dest
= DEST_OPD
;
13121 /* If the branch is out of reach we ought to have a long
13123 from
= (rel
->r_offset
13124 + input_section
->output_offset
13125 + input_section
->output_section
->vma
);
13127 if (stub_entry
!= NULL
13128 && (stub_entry
->stub_type
== ppc_stub_long_branch
13129 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13130 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13131 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13132 || (relocation
+ addend
- from
+ max_br_offset
13133 < 2 * max_br_offset
)))
13134 /* Don't use the stub if this branch is in range. */
13137 if (stub_entry
!= NULL
)
13139 /* Munge up the value and addend so that we call the stub
13140 rather than the procedure directly. */
13141 relocation
= (stub_entry
->stub_offset
13142 + stub_entry
->stub_sec
->output_offset
13143 + stub_entry
->stub_sec
->output_section
->vma
);
13145 reloc_dest
= DEST_STUB
;
13147 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13148 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13149 && (ALWAYS_EMIT_R2SAVE
13150 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13151 && rel
+ 1 < relend
13152 && rel
[1].r_offset
== rel
->r_offset
+ 4
13153 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13161 /* Set 'a' bit. This is 0b00010 in BO field for branch
13162 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13163 for branch on CTR insns (BO == 1a00t or 1a01t). */
13164 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13165 insn
|= 0x02 << 21;
13166 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13167 insn
|= 0x08 << 21;
13173 /* Invert 'y' bit if not the default. */
13174 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13175 insn
^= 0x01 << 21;
13178 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13181 /* NOP out calls to undefined weak functions.
13182 We can thus call a weak function without first
13183 checking whether the function is defined. */
13185 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13186 && h
->elf
.dynindx
== -1
13187 && r_type
== R_PPC64_REL24
13191 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13197 /* Set `addend'. */
13202 info
->callbacks
->einfo
13203 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13204 input_bfd
, (int) r_type
, sym_name
);
13206 bfd_set_error (bfd_error_bad_value
);
13212 case R_PPC64_TLSGD
:
13213 case R_PPC64_TLSLD
:
13214 case R_PPC64_TOCSAVE
:
13215 case R_PPC64_GNU_VTINHERIT
:
13216 case R_PPC64_GNU_VTENTRY
:
13219 /* GOT16 relocations. Like an ADDR16 using the symbol's
13220 address in the GOT as relocation value instead of the
13221 symbol's value itself. Also, create a GOT entry for the
13222 symbol and put the symbol value there. */
13223 case R_PPC64_GOT_TLSGD16
:
13224 case R_PPC64_GOT_TLSGD16_LO
:
13225 case R_PPC64_GOT_TLSGD16_HI
:
13226 case R_PPC64_GOT_TLSGD16_HA
:
13227 tls_type
= TLS_TLS
| TLS_GD
;
13230 case R_PPC64_GOT_TLSLD16
:
13231 case R_PPC64_GOT_TLSLD16_LO
:
13232 case R_PPC64_GOT_TLSLD16_HI
:
13233 case R_PPC64_GOT_TLSLD16_HA
:
13234 tls_type
= TLS_TLS
| TLS_LD
;
13237 case R_PPC64_GOT_TPREL16_DS
:
13238 case R_PPC64_GOT_TPREL16_LO_DS
:
13239 case R_PPC64_GOT_TPREL16_HI
:
13240 case R_PPC64_GOT_TPREL16_HA
:
13241 tls_type
= TLS_TLS
| TLS_TPREL
;
13244 case R_PPC64_GOT_DTPREL16_DS
:
13245 case R_PPC64_GOT_DTPREL16_LO_DS
:
13246 case R_PPC64_GOT_DTPREL16_HI
:
13247 case R_PPC64_GOT_DTPREL16_HA
:
13248 tls_type
= TLS_TLS
| TLS_DTPREL
;
13251 case R_PPC64_GOT16
:
13252 case R_PPC64_GOT16_LO
:
13253 case R_PPC64_GOT16_HI
:
13254 case R_PPC64_GOT16_HA
:
13255 case R_PPC64_GOT16_DS
:
13256 case R_PPC64_GOT16_LO_DS
:
13259 /* Relocation is to the entry for this symbol in the global
13264 unsigned long indx
= 0;
13265 struct got_entry
*ent
;
13267 if (tls_type
== (TLS_TLS
| TLS_LD
)
13269 || !h
->elf
.def_dynamic
))
13270 ent
= ppc64_tlsld_got (input_bfd
);
13276 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
13277 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
13280 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
13281 /* This is actually a static link, or it is a
13282 -Bsymbolic link and the symbol is defined
13283 locally, or the symbol was forced to be local
13284 because of a version file. */
13288 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13289 indx
= h
->elf
.dynindx
;
13290 unresolved_reloc
= FALSE
;
13292 ent
= h
->elf
.got
.glist
;
13296 if (local_got_ents
== NULL
)
13298 ent
= local_got_ents
[r_symndx
];
13301 for (; ent
!= NULL
; ent
= ent
->next
)
13302 if (ent
->addend
== orig_rel
.r_addend
13303 && ent
->owner
== input_bfd
13304 && ent
->tls_type
== tls_type
)
13310 if (ent
->is_indirect
)
13311 ent
= ent
->got
.ent
;
13312 offp
= &ent
->got
.offset
;
13313 got
= ppc64_elf_tdata (ent
->owner
)->got
;
13317 /* The offset must always be a multiple of 8. We use the
13318 least significant bit to record whether we have already
13319 processed this entry. */
13321 if ((off
& 1) != 0)
13325 /* Generate relocs for the dynamic linker, except in
13326 the case of TLSLD where we'll use one entry per
13334 ? h
->elf
.type
== STT_GNU_IFUNC
13335 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
13337 relgot
= htab
->reliplt
;
13338 else if ((info
->shared
|| indx
!= 0)
13340 || (tls_type
== (TLS_TLS
| TLS_LD
)
13341 && !h
->elf
.def_dynamic
)
13342 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13343 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
13344 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
13345 if (relgot
!= NULL
)
13347 outrel
.r_offset
= (got
->output_section
->vma
13348 + got
->output_offset
13350 outrel
.r_addend
= addend
;
13351 if (tls_type
& (TLS_LD
| TLS_GD
))
13353 outrel
.r_addend
= 0;
13354 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
13355 if (tls_type
== (TLS_TLS
| TLS_GD
))
13357 loc
= relgot
->contents
;
13358 loc
+= (relgot
->reloc_count
++
13359 * sizeof (Elf64_External_Rela
));
13360 bfd_elf64_swap_reloca_out (output_bfd
,
13362 outrel
.r_offset
+= 8;
13363 outrel
.r_addend
= addend
;
13365 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13368 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
13369 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13370 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
13371 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
13372 else if (indx
!= 0)
13373 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
13377 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13379 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13381 /* Write the .got section contents for the sake
13383 loc
= got
->contents
+ off
;
13384 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
13388 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
13390 outrel
.r_addend
+= relocation
;
13391 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
13392 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
13394 loc
= relgot
->contents
;
13395 loc
+= (relgot
->reloc_count
++
13396 * sizeof (Elf64_External_Rela
));
13397 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13400 /* Init the .got section contents here if we're not
13401 emitting a reloc. */
13404 relocation
+= addend
;
13405 if (tls_type
== (TLS_TLS
| TLS_LD
))
13407 else if (tls_type
!= 0)
13409 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13410 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
13411 relocation
+= DTP_OFFSET
- TP_OFFSET
;
13413 if (tls_type
== (TLS_TLS
| TLS_GD
))
13415 bfd_put_64 (output_bfd
, relocation
,
13416 got
->contents
+ off
+ 8);
13421 bfd_put_64 (output_bfd
, relocation
,
13422 got
->contents
+ off
);
13426 if (off
>= (bfd_vma
) -2)
13429 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
13430 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
13434 case R_PPC64_PLT16_HA
:
13435 case R_PPC64_PLT16_HI
:
13436 case R_PPC64_PLT16_LO
:
13437 case R_PPC64_PLT32
:
13438 case R_PPC64_PLT64
:
13439 /* Relocation is to the entry for this symbol in the
13440 procedure linkage table. */
13442 /* Resolve a PLT reloc against a local symbol directly,
13443 without using the procedure linkage table. */
13447 /* It's possible that we didn't make a PLT entry for this
13448 symbol. This happens when statically linking PIC code,
13449 or when using -Bsymbolic. Go find a match if there is a
13451 if (htab
->plt
!= NULL
)
13453 struct plt_entry
*ent
;
13454 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13455 if (ent
->addend
== orig_rel
.r_addend
13456 && ent
->plt
.offset
!= (bfd_vma
) -1)
13458 relocation
= (htab
->plt
->output_section
->vma
13459 + htab
->plt
->output_offset
13460 + ent
->plt
.offset
);
13461 unresolved_reloc
= FALSE
;
13467 /* Relocation value is TOC base. */
13468 relocation
= TOCstart
;
13469 if (r_symndx
== STN_UNDEF
)
13470 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
13471 else if (unresolved_reloc
)
13473 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
13474 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
13476 unresolved_reloc
= TRUE
;
13479 /* TOC16 relocs. We want the offset relative to the TOC base,
13480 which is the address of the start of the TOC plus 0x8000.
13481 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13483 case R_PPC64_TOC16
:
13484 case R_PPC64_TOC16_LO
:
13485 case R_PPC64_TOC16_HI
:
13486 case R_PPC64_TOC16_DS
:
13487 case R_PPC64_TOC16_LO_DS
:
13488 case R_PPC64_TOC16_HA
:
13489 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
13492 /* Relocate against the beginning of the section. */
13493 case R_PPC64_SECTOFF
:
13494 case R_PPC64_SECTOFF_LO
:
13495 case R_PPC64_SECTOFF_HI
:
13496 case R_PPC64_SECTOFF_DS
:
13497 case R_PPC64_SECTOFF_LO_DS
:
13498 case R_PPC64_SECTOFF_HA
:
13500 addend
-= sec
->output_section
->vma
;
13503 case R_PPC64_REL16
:
13504 case R_PPC64_REL16_LO
:
13505 case R_PPC64_REL16_HI
:
13506 case R_PPC64_REL16_HA
:
13509 case R_PPC64_REL14
:
13510 case R_PPC64_REL14_BRNTAKEN
:
13511 case R_PPC64_REL14_BRTAKEN
:
13512 case R_PPC64_REL24
:
13515 case R_PPC64_TPREL16
:
13516 case R_PPC64_TPREL16_LO
:
13517 case R_PPC64_TPREL16_HI
:
13518 case R_PPC64_TPREL16_HA
:
13519 case R_PPC64_TPREL16_DS
:
13520 case R_PPC64_TPREL16_LO_DS
:
13521 case R_PPC64_TPREL16_HIGHER
:
13522 case R_PPC64_TPREL16_HIGHERA
:
13523 case R_PPC64_TPREL16_HIGHEST
:
13524 case R_PPC64_TPREL16_HIGHESTA
:
13526 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13527 && h
->elf
.dynindx
== -1)
13529 /* Make this relocation against an undefined weak symbol
13530 resolve to zero. This is really just a tweak, since
13531 code using weak externs ought to check that they are
13532 defined before using them. */
13533 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
13535 insn
= bfd_get_32 (output_bfd
, p
);
13536 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
13538 bfd_put_32 (output_bfd
, insn
, p
);
13541 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13543 /* The TPREL16 relocs shouldn't really be used in shared
13544 libs as they will result in DT_TEXTREL being set, but
13545 support them anyway. */
13549 case R_PPC64_DTPREL16
:
13550 case R_PPC64_DTPREL16_LO
:
13551 case R_PPC64_DTPREL16_HI
:
13552 case R_PPC64_DTPREL16_HA
:
13553 case R_PPC64_DTPREL16_DS
:
13554 case R_PPC64_DTPREL16_LO_DS
:
13555 case R_PPC64_DTPREL16_HIGHER
:
13556 case R_PPC64_DTPREL16_HIGHERA
:
13557 case R_PPC64_DTPREL16_HIGHEST
:
13558 case R_PPC64_DTPREL16_HIGHESTA
:
13559 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13562 case R_PPC64_DTPMOD64
:
13567 case R_PPC64_TPREL64
:
13568 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
13571 case R_PPC64_DTPREL64
:
13572 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13575 /* Relocations that may need to be propagated if this is a
13577 case R_PPC64_REL30
:
13578 case R_PPC64_REL32
:
13579 case R_PPC64_REL64
:
13580 case R_PPC64_ADDR14
:
13581 case R_PPC64_ADDR14_BRNTAKEN
:
13582 case R_PPC64_ADDR14_BRTAKEN
:
13583 case R_PPC64_ADDR16
:
13584 case R_PPC64_ADDR16_DS
:
13585 case R_PPC64_ADDR16_HA
:
13586 case R_PPC64_ADDR16_HI
:
13587 case R_PPC64_ADDR16_HIGHER
:
13588 case R_PPC64_ADDR16_HIGHERA
:
13589 case R_PPC64_ADDR16_HIGHEST
:
13590 case R_PPC64_ADDR16_HIGHESTA
:
13591 case R_PPC64_ADDR16_LO
:
13592 case R_PPC64_ADDR16_LO_DS
:
13593 case R_PPC64_ADDR24
:
13594 case R_PPC64_ADDR32
:
13595 case R_PPC64_ADDR64
:
13596 case R_PPC64_UADDR16
:
13597 case R_PPC64_UADDR32
:
13598 case R_PPC64_UADDR64
:
13600 if ((input_section
->flags
& SEC_ALLOC
) == 0)
13603 if (NO_OPD_RELOCS
&& is_opd
)
13608 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13609 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
13610 && (must_be_dyn_reloc (info
, r_type
)
13611 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
13612 || (ELIMINATE_COPY_RELOCS
13615 && h
->elf
.dynindx
!= -1
13616 && !h
->elf
.non_got_ref
13617 && !h
->elf
.def_regular
)
13620 ? h
->elf
.type
== STT_GNU_IFUNC
13621 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
13623 bfd_boolean skip
, relocate
;
13627 /* When generating a dynamic object, these relocations
13628 are copied into the output file to be resolved at run
13634 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
13635 input_section
, rel
->r_offset
);
13636 if (out_off
== (bfd_vma
) -1)
13638 else if (out_off
== (bfd_vma
) -2)
13639 skip
= TRUE
, relocate
= TRUE
;
13640 out_off
+= (input_section
->output_section
->vma
13641 + input_section
->output_offset
);
13642 outrel
.r_offset
= out_off
;
13643 outrel
.r_addend
= rel
->r_addend
;
13645 /* Optimize unaligned reloc use. */
13646 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
13647 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
13648 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
13649 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
13650 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
13651 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
13652 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
13653 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
13654 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
13657 memset (&outrel
, 0, sizeof outrel
);
13658 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
13660 && r_type
!= R_PPC64_TOC
)
13662 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13663 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
13667 /* This symbol is local, or marked to become local,
13668 or this is an opd section reloc which must point
13669 at a local function. */
13670 outrel
.r_addend
+= relocation
;
13671 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
13673 if (is_opd
&& h
!= NULL
)
13675 /* Lie about opd entries. This case occurs
13676 when building shared libraries and we
13677 reference a function in another shared
13678 lib. The same thing happens for a weak
13679 definition in an application that's
13680 overridden by a strong definition in a
13681 shared lib. (I believe this is a generic
13682 bug in binutils handling of weak syms.)
13683 In these cases we won't use the opd
13684 entry in this lib. */
13685 unresolved_reloc
= FALSE
;
13688 && r_type
== R_PPC64_ADDR64
13690 ? h
->elf
.type
== STT_GNU_IFUNC
13691 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
13692 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13695 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13697 /* We need to relocate .opd contents for ld.so.
13698 Prelink also wants simple and consistent rules
13699 for relocs. This make all RELATIVE relocs have
13700 *r_offset equal to r_addend. */
13709 ? h
->elf
.type
== STT_GNU_IFUNC
13710 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13712 info
->callbacks
->einfo
13713 (_("%P: %H: %s for indirect "
13714 "function `%T' unsupported\n"),
13715 input_bfd
, input_section
, rel
->r_offset
,
13716 ppc64_elf_howto_table
[r_type
]->name
,
13720 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
13722 else if (sec
== NULL
|| sec
->owner
== NULL
)
13724 bfd_set_error (bfd_error_bad_value
);
13731 osec
= sec
->output_section
;
13732 indx
= elf_section_data (osec
)->dynindx
;
13736 if ((osec
->flags
& SEC_READONLY
) == 0
13737 && htab
->elf
.data_index_section
!= NULL
)
13738 osec
= htab
->elf
.data_index_section
;
13740 osec
= htab
->elf
.text_index_section
;
13741 indx
= elf_section_data (osec
)->dynindx
;
13743 BFD_ASSERT (indx
!= 0);
13745 /* We are turning this relocation into one
13746 against a section symbol, so subtract out
13747 the output section's address but not the
13748 offset of the input section in the output
13750 outrel
.r_addend
-= osec
->vma
;
13753 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
13757 sreloc
= elf_section_data (input_section
)->sreloc
;
13759 ? h
->elf
.type
== STT_GNU_IFUNC
13760 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
13761 sreloc
= htab
->reliplt
;
13762 if (sreloc
== NULL
)
13765 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
13768 loc
= sreloc
->contents
;
13769 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13770 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
13772 /* If this reloc is against an external symbol, it will
13773 be computed at runtime, so there's no need to do
13774 anything now. However, for the sake of prelink ensure
13775 that the section contents are a known value. */
13778 unresolved_reloc
= FALSE
;
13779 /* The value chosen here is quite arbitrary as ld.so
13780 ignores section contents except for the special
13781 case of .opd where the contents might be accessed
13782 before relocation. Choose zero, as that won't
13783 cause reloc overflow. */
13786 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13787 to improve backward compatibility with older
13789 if (r_type
== R_PPC64_ADDR64
)
13790 addend
= outrel
.r_addend
;
13791 /* Adjust pc_relative relocs to have zero in *r_offset. */
13792 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
13793 addend
= (input_section
->output_section
->vma
13794 + input_section
->output_offset
13801 case R_PPC64_GLOB_DAT
:
13802 case R_PPC64_JMP_SLOT
:
13803 case R_PPC64_JMP_IREL
:
13804 case R_PPC64_RELATIVE
:
13805 /* We shouldn't ever see these dynamic relocs in relocatable
13807 /* Fall through. */
13809 case R_PPC64_PLTGOT16
:
13810 case R_PPC64_PLTGOT16_DS
:
13811 case R_PPC64_PLTGOT16_HA
:
13812 case R_PPC64_PLTGOT16_HI
:
13813 case R_PPC64_PLTGOT16_LO
:
13814 case R_PPC64_PLTGOT16_LO_DS
:
13815 case R_PPC64_PLTREL32
:
13816 case R_PPC64_PLTREL64
:
13817 /* These ones haven't been implemented yet. */
13819 info
->callbacks
->einfo
13820 (_("%P: %B: %s is not supported for `%T'\n"),
13822 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
13824 bfd_set_error (bfd_error_invalid_operation
);
13829 /* Multi-instruction sequences that access the TOC can be
13830 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13831 to nop; addi rb,r2,x; */
13837 case R_PPC64_GOT_TLSLD16_HI
:
13838 case R_PPC64_GOT_TLSGD16_HI
:
13839 case R_PPC64_GOT_TPREL16_HI
:
13840 case R_PPC64_GOT_DTPREL16_HI
:
13841 case R_PPC64_GOT16_HI
:
13842 case R_PPC64_TOC16_HI
:
13843 /* These relocs would only be useful if building up an
13844 offset to later add to r2, perhaps in an indexed
13845 addressing mode instruction. Don't try to optimize.
13846 Unfortunately, the possibility of someone building up an
13847 offset like this or even with the HA relocs, means that
13848 we need to check the high insn when optimizing the low
13852 case R_PPC64_GOT_TLSLD16_HA
:
13853 case R_PPC64_GOT_TLSGD16_HA
:
13854 case R_PPC64_GOT_TPREL16_HA
:
13855 case R_PPC64_GOT_DTPREL16_HA
:
13856 case R_PPC64_GOT16_HA
:
13857 case R_PPC64_TOC16_HA
:
13858 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13859 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
13861 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13862 bfd_put_32 (input_bfd
, NOP
, p
);
13866 case R_PPC64_GOT_TLSLD16_LO
:
13867 case R_PPC64_GOT_TLSGD16_LO
:
13868 case R_PPC64_GOT_TPREL16_LO_DS
:
13869 case R_PPC64_GOT_DTPREL16_LO_DS
:
13870 case R_PPC64_GOT16_LO
:
13871 case R_PPC64_GOT16_LO_DS
:
13872 case R_PPC64_TOC16_LO
:
13873 case R_PPC64_TOC16_LO_DS
:
13874 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
13875 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
13877 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13878 insn
= bfd_get_32 (input_bfd
, p
);
13879 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
13881 /* Transform addic to addi when we change reg. */
13882 insn
&= ~((0x3f << 26) | (0x1f << 16));
13883 insn
|= (14u << 26) | (2 << 16);
13887 insn
&= ~(0x1f << 16);
13890 bfd_put_32 (input_bfd
, insn
, p
);
13895 /* Do any further special processing. */
13901 case R_PPC64_ADDR16_HA
:
13902 case R_PPC64_REL16_HA
:
13903 case R_PPC64_ADDR16_HIGHERA
:
13904 case R_PPC64_ADDR16_HIGHESTA
:
13905 case R_PPC64_TOC16_HA
:
13906 case R_PPC64_SECTOFF_HA
:
13907 case R_PPC64_TPREL16_HA
:
13908 case R_PPC64_DTPREL16_HA
:
13909 case R_PPC64_TPREL16_HIGHER
:
13910 case R_PPC64_TPREL16_HIGHERA
:
13911 case R_PPC64_TPREL16_HIGHEST
:
13912 case R_PPC64_TPREL16_HIGHESTA
:
13913 case R_PPC64_DTPREL16_HIGHER
:
13914 case R_PPC64_DTPREL16_HIGHERA
:
13915 case R_PPC64_DTPREL16_HIGHEST
:
13916 case R_PPC64_DTPREL16_HIGHESTA
:
13917 /* It's just possible that this symbol is a weak symbol
13918 that's not actually defined anywhere. In that case,
13919 'sec' would be NULL, and we should leave the symbol
13920 alone (it will be set to zero elsewhere in the link). */
13925 case R_PPC64_GOT16_HA
:
13926 case R_PPC64_PLTGOT16_HA
:
13927 case R_PPC64_PLT16_HA
:
13928 case R_PPC64_GOT_TLSGD16_HA
:
13929 case R_PPC64_GOT_TLSLD16_HA
:
13930 case R_PPC64_GOT_TPREL16_HA
:
13931 case R_PPC64_GOT_DTPREL16_HA
:
13932 /* Add 0x10000 if sign bit in 0:15 is set.
13933 Bits 0:15 are not used. */
13937 case R_PPC64_ADDR16_DS
:
13938 case R_PPC64_ADDR16_LO_DS
:
13939 case R_PPC64_GOT16_DS
:
13940 case R_PPC64_GOT16_LO_DS
:
13941 case R_PPC64_PLT16_LO_DS
:
13942 case R_PPC64_SECTOFF_DS
:
13943 case R_PPC64_SECTOFF_LO_DS
:
13944 case R_PPC64_TOC16_DS
:
13945 case R_PPC64_TOC16_LO_DS
:
13946 case R_PPC64_PLTGOT16_DS
:
13947 case R_PPC64_PLTGOT16_LO_DS
:
13948 case R_PPC64_GOT_TPREL16_DS
:
13949 case R_PPC64_GOT_TPREL16_LO_DS
:
13950 case R_PPC64_GOT_DTPREL16_DS
:
13951 case R_PPC64_GOT_DTPREL16_LO_DS
:
13952 case R_PPC64_TPREL16_DS
:
13953 case R_PPC64_TPREL16_LO_DS
:
13954 case R_PPC64_DTPREL16_DS
:
13955 case R_PPC64_DTPREL16_LO_DS
:
13956 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13958 /* If this reloc is against an lq insn, then the value must be
13959 a multiple of 16. This is somewhat of a hack, but the
13960 "correct" way to do this by defining _DQ forms of all the
13961 _DS relocs bloats all reloc switches in this file. It
13962 doesn't seem to make much sense to use any of these relocs
13963 in data, so testing the insn should be safe. */
13964 if ((insn
& (0x3f << 26)) == (56u << 26))
13966 if (((relocation
+ addend
) & mask
) != 0)
13968 info
->callbacks
->einfo
13969 (_("%P: %H: error: %s not a multiple of %u\n"),
13970 input_bfd
, input_section
, rel
->r_offset
,
13971 ppc64_elf_howto_table
[r_type
]->name
,
13973 bfd_set_error (bfd_error_bad_value
);
13980 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13981 because such sections are not SEC_ALLOC and thus ld.so will
13982 not process them. */
13983 if (unresolved_reloc
13984 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13985 && h
->elf
.def_dynamic
)
13986 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
13987 rel
->r_offset
) != (bfd_vma
) -1)
13989 info
->callbacks
->einfo
13990 (_("%P: %H: unresolvable %s against `%T'\n"),
13991 input_bfd
, input_section
, rel
->r_offset
,
13992 ppc64_elf_howto_table
[(int) r_type
]->name
,
13993 h
->elf
.root
.root
.string
);
13997 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
14005 if (r
!= bfd_reloc_ok
)
14007 char *more_info
= NULL
;
14008 const char *reloc_name
= ppc64_elf_howto_table
[r_type
]->name
;
14010 if (reloc_dest
!= DEST_NORMAL
)
14012 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14013 if (more_info
!= NULL
)
14015 strcpy (more_info
, reloc_name
);
14016 strcat (more_info
, (reloc_dest
== DEST_OPD
14017 ? " (OPD)" : " (stub)"));
14018 reloc_name
= more_info
;
14022 if (r
== bfd_reloc_overflow
)
14027 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14028 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
14030 /* Assume this is a call protected by other code that
14031 detects the symbol is undefined. If this is the case,
14032 we can safely ignore the overflow. If not, the
14033 program is hosed anyway, and a little warning isn't
14039 if (!((*info
->callbacks
->reloc_overflow
)
14040 (info
, &h
->elf
.root
, sym_name
,
14041 reloc_name
, orig_rel
.r_addend
,
14042 input_bfd
, input_section
, rel
->r_offset
)))
14047 info
->callbacks
->einfo
14048 (_("%P: %H: %s against `%T': error %d\n"),
14049 input_bfd
, input_section
, rel
->r_offset
,
14050 reloc_name
, sym_name
, (int) r
);
14053 if (more_info
!= NULL
)
14058 /* If we're emitting relocations, then shortly after this function
14059 returns, reloc offsets and addends for this section will be
14060 adjusted. Worse, reloc symbol indices will be for the output
14061 file rather than the input. Save a copy of the relocs for
14062 opd_entry_value. */
14063 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14066 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14067 rel
= bfd_alloc (input_bfd
, amt
);
14068 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
14069 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
14072 memcpy (rel
, relocs
, amt
);
14077 /* Adjust the value of any local symbols in opd sections. */
14080 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14081 const char *name ATTRIBUTE_UNUSED
,
14082 Elf_Internal_Sym
*elfsym
,
14083 asection
*input_sec
,
14084 struct elf_link_hash_entry
*h
)
14086 struct _opd_sec_data
*opd
;
14093 opd
= get_opd_info (input_sec
);
14094 if (opd
== NULL
|| opd
->adjust
== NULL
)
14097 value
= elfsym
->st_value
- input_sec
->output_offset
;
14098 if (!info
->relocatable
)
14099 value
-= input_sec
->output_section
->vma
;
14101 adjust
= opd
->adjust
[value
/ 8];
14105 elfsym
->st_value
+= adjust
;
14109 /* Finish up dynamic symbol handling. We set the contents of various
14110 dynamic sections here. */
14113 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14114 struct bfd_link_info
*info
,
14115 struct elf_link_hash_entry
*h
,
14116 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14118 struct ppc_link_hash_table
*htab
;
14119 struct plt_entry
*ent
;
14120 Elf_Internal_Rela rela
;
14123 htab
= ppc_hash_table (info
);
14127 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14128 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14130 /* This symbol has an entry in the procedure linkage
14131 table. Set it up. */
14132 if (!htab
->elf
.dynamic_sections_created
14133 || h
->dynindx
== -1)
14135 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14137 && (h
->root
.type
== bfd_link_hash_defined
14138 || h
->root
.type
== bfd_link_hash_defweak
));
14139 rela
.r_offset
= (htab
->iplt
->output_section
->vma
14140 + htab
->iplt
->output_offset
14141 + ent
->plt
.offset
);
14142 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14143 rela
.r_addend
= (h
->root
.u
.def
.value
14144 + h
->root
.u
.def
.section
->output_offset
14145 + h
->root
.u
.def
.section
->output_section
->vma
14147 loc
= (htab
->reliplt
->contents
14148 + (htab
->reliplt
->reloc_count
++
14149 * sizeof (Elf64_External_Rela
)));
14153 rela
.r_offset
= (htab
->plt
->output_section
->vma
14154 + htab
->plt
->output_offset
14155 + ent
->plt
.offset
);
14156 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14157 rela
.r_addend
= ent
->addend
;
14158 loc
= (htab
->relplt
->contents
14159 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
14160 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
14162 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14167 /* This symbol needs a copy reloc. Set it up. */
14169 if (h
->dynindx
== -1
14170 || (h
->root
.type
!= bfd_link_hash_defined
14171 && h
->root
.type
!= bfd_link_hash_defweak
)
14172 || htab
->relbss
== NULL
)
14175 rela
.r_offset
= (h
->root
.u
.def
.value
14176 + h
->root
.u
.def
.section
->output_section
->vma
14177 + h
->root
.u
.def
.section
->output_offset
);
14178 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
14180 loc
= htab
->relbss
->contents
;
14181 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14182 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14188 /* Used to decide how to sort relocs in an optimal manner for the
14189 dynamic linker, before writing them out. */
14191 static enum elf_reloc_type_class
14192 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
14193 const asection
*rel_sec
,
14194 const Elf_Internal_Rela
*rela
)
14196 enum elf_ppc64_reloc_type r_type
;
14197 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
14199 if (rel_sec
== htab
->reliplt
)
14200 return reloc_class_ifunc
;
14202 r_type
= ELF64_R_TYPE (rela
->r_info
);
14205 case R_PPC64_RELATIVE
:
14206 return reloc_class_relative
;
14207 case R_PPC64_JMP_SLOT
:
14208 return reloc_class_plt
;
14210 return reloc_class_copy
;
14212 return reloc_class_normal
;
14216 /* Finish up the dynamic sections. */
14219 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
14220 struct bfd_link_info
*info
)
14222 struct ppc_link_hash_table
*htab
;
14226 htab
= ppc_hash_table (info
);
14230 dynobj
= htab
->elf
.dynobj
;
14231 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
14233 if (htab
->elf
.dynamic_sections_created
)
14235 Elf64_External_Dyn
*dyncon
, *dynconend
;
14237 if (sdyn
== NULL
|| htab
->got
== NULL
)
14240 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
14241 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
14242 for (; dyncon
< dynconend
; dyncon
++)
14244 Elf_Internal_Dyn dyn
;
14247 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
14254 case DT_PPC64_GLINK
:
14256 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14257 /* We stupidly defined DT_PPC64_GLINK to be the start
14258 of glink rather than the first entry point, which is
14259 what ld.so needs, and now have a bigger stub to
14260 support automatic multiple TOCs. */
14261 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
14265 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14268 dyn
.d_un
.d_ptr
= s
->vma
;
14271 case DT_PPC64_OPDSZ
:
14272 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14275 dyn
.d_un
.d_val
= s
->size
;
14280 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14285 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14289 dyn
.d_un
.d_val
= htab
->relplt
->size
;
14293 /* Don't count procedure linkage table relocs in the
14294 overall reloc count. */
14298 dyn
.d_un
.d_val
-= s
->size
;
14302 /* We may not be using the standard ELF linker script.
14303 If .rela.plt is the first .rela section, we adjust
14304 DT_RELA to not include it. */
14308 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
14310 dyn
.d_un
.d_ptr
+= s
->size
;
14314 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
14318 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
14320 /* Fill in the first entry in the global offset table.
14321 We use it to hold the link-time TOCbase. */
14322 bfd_put_64 (output_bfd
,
14323 elf_gp (output_bfd
) + TOC_BASE_OFF
,
14324 htab
->got
->contents
);
14326 /* Set .got entry size. */
14327 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
14330 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
14332 /* Set .plt entry size. */
14333 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
14337 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14338 brlt ourselves if emitrelocations. */
14339 if (htab
->brlt
!= NULL
14340 && htab
->brlt
->reloc_count
!= 0
14341 && !_bfd_elf_link_output_relocs (output_bfd
,
14343 elf_section_data (htab
->brlt
)->rela
.hdr
,
14344 elf_section_data (htab
->brlt
)->relocs
,
14348 if (htab
->glink
!= NULL
14349 && htab
->glink
->reloc_count
!= 0
14350 && !_bfd_elf_link_output_relocs (output_bfd
,
14352 elf_section_data (htab
->glink
)->rela
.hdr
,
14353 elf_section_data (htab
->glink
)->relocs
,
14358 if (htab
->glink_eh_frame
!= NULL
14359 && htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
14360 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
14361 htab
->glink_eh_frame
,
14362 htab
->glink_eh_frame
->contents
))
14365 /* We need to handle writing out multiple GOT sections ourselves,
14366 since we didn't add them to DYNOBJ. We know dynobj is the first
14368 while ((dynobj
= dynobj
->link_next
) != NULL
)
14372 if (!is_ppc64_elf (dynobj
))
14375 s
= ppc64_elf_tdata (dynobj
)->got
;
14378 && s
->output_section
!= bfd_abs_section_ptr
14379 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
14380 s
->contents
, s
->output_offset
,
14383 s
= ppc64_elf_tdata (dynobj
)->relgot
;
14386 && s
->output_section
!= bfd_abs_section_ptr
14387 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
14388 s
->contents
, s
->output_offset
,
14396 #include "elf64-target.h"
14398 /* FreeBSD support */
14400 #undef TARGET_LITTLE_SYM
14401 #undef TARGET_LITTLE_NAME
14403 #undef TARGET_BIG_SYM
14404 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14405 #undef TARGET_BIG_NAME
14406 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14409 #define ELF_OSABI ELFOSABI_FREEBSD
14412 #define elf64_bed elf64_powerpc_fbsd_bed
14414 #include "elf64-target.h"