1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010 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"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_MACHINE_CODE EM_PPC64
65 #define ELF_MAXPAGESIZE 0x10000
66 #define ELF_COMMONPAGESIZE 0x1000
67 #define elf_info_to_howto ppc64_elf_info_to_howto
69 #define elf_backend_want_got_sym 0
70 #define elf_backend_want_plt_sym 0
71 #define elf_backend_plt_alignment 3
72 #define elf_backend_plt_not_loaded 1
73 #define elf_backend_got_header_size 8
74 #define elf_backend_can_gc_sections 1
75 #define elf_backend_can_refcount 1
76 #define elf_backend_rela_normal 1
77 #define elf_backend_default_execstack 0
79 #define bfd_elf64_mkobject ppc64_elf_mkobject
80 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
81 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
82 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
86 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define elf_backend_object_p ppc64_elf_object_p
89 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
91 #define elf_backend_write_core_note ppc64_elf_write_core_note
92 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
94 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
95 #define elf_backend_check_directives ppc64_elf_process_dot_syms
96 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
97 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
98 #define elf_backend_check_relocs ppc64_elf_check_relocs
99 #define elf_backend_gc_keep ppc64_elf_gc_keep
100 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
101 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
105 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
107 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
108 #define elf_backend_action_discarded ppc64_elf_action_discarded
109 #define elf_backend_relocate_section ppc64_elf_relocate_section
110 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
113 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
114 #define elf_backend_special_sections ppc64_elf_special_sections
115 #define elf_backend_post_process_headers _bfd_elf_set_osabi
117 /* The name of the dynamic interpreter. This is put in the .interp
119 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
121 /* The size in bytes of an entry in the procedure linkage table. */
122 #define PLT_ENTRY_SIZE 24
124 /* The initial size of the plt reserved for the dynamic linker. */
125 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
127 /* TOC base pointers offset from start of TOC. */
128 #define TOC_BASE_OFF 0x8000
130 /* Offset of tp and dtp pointers from start of TLS block. */
131 #define TP_OFFSET 0x7000
132 #define DTP_OFFSET 0x8000
134 /* .plt call stub instructions. The normal stub is like this, but
135 sometimes the .plt entry crosses a 64k boundary and we need to
136 insert an addi to adjust r12. */
137 #define PLT_CALL_STUB_SIZE (7*4)
138 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
139 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
140 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
141 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
142 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
143 /* ld %r11,xxx+16@l(%r12) */
144 #define BCTR 0x4e800420 /* bctr */
147 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
148 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
149 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
150 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
152 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
153 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
155 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
157 /* glink call stub instructions. We enter with the index in R0. */
158 #define GLINK_CALL_STUB_SIZE (16*4)
162 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
163 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
165 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
166 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
167 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
168 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
176 #define NOP 0x60000000
178 /* Some other nops. */
179 #define CROR_151515 0x4def7b82
180 #define CROR_313131 0x4ffffb82
182 /* .glink entries for the first 32k functions are two instructions. */
183 #define LI_R0_0 0x38000000 /* li %r0,0 */
184 #define B_DOT 0x48000000 /* b . */
186 /* After that, we need two instructions to load the index, followed by
188 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
189 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
191 /* Instructions used by the save and restore reg functions. */
192 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
193 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
194 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
195 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
196 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
197 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
198 #define LI_R12_0 0x39800000 /* li %r12,0 */
199 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
200 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
201 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
202 #define BLR 0x4e800020 /* blr */
204 /* Since .opd is an array of descriptors and each entry will end up
205 with identical R_PPC64_RELATIVE relocs, there is really no need to
206 propagate .opd relocs; The dynamic linker should be taught to
207 relocate .opd without reloc entries. */
208 #ifndef NO_OPD_RELOCS
209 #define NO_OPD_RELOCS 0
212 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
214 /* Relocation HOWTO's. */
215 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
217 static reloc_howto_type ppc64_elf_howto_raw
[] = {
218 /* This reloc does nothing. */
219 HOWTO (R_PPC64_NONE
, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE
, /* pc_relative */
225 complain_overflow_dont
, /* complain_on_overflow */
226 bfd_elf_generic_reloc
, /* special_function */
227 "R_PPC64_NONE", /* name */
228 FALSE
, /* partial_inplace */
231 FALSE
), /* pcrel_offset */
233 /* A standard 32 bit relocation. */
234 HOWTO (R_PPC64_ADDR32
, /* type */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE
, /* pc_relative */
240 complain_overflow_bitfield
, /* complain_on_overflow */
241 bfd_elf_generic_reloc
, /* special_function */
242 "R_PPC64_ADDR32", /* name */
243 FALSE
, /* partial_inplace */
245 0xffffffff, /* dst_mask */
246 FALSE
), /* pcrel_offset */
248 /* An absolute 26 bit branch; the lower two bits must be zero.
249 FIXME: we don't check that, we just clear them. */
250 HOWTO (R_PPC64_ADDR24
, /* type */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE
, /* pc_relative */
256 complain_overflow_bitfield
, /* complain_on_overflow */
257 bfd_elf_generic_reloc
, /* special_function */
258 "R_PPC64_ADDR24", /* name */
259 FALSE
, /* partial_inplace */
261 0x03fffffc, /* dst_mask */
262 FALSE
), /* pcrel_offset */
264 /* A standard 16 bit relocation. */
265 HOWTO (R_PPC64_ADDR16
, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE
, /* pc_relative */
271 complain_overflow_bitfield
, /* complain_on_overflow */
272 bfd_elf_generic_reloc
, /* special_function */
273 "R_PPC64_ADDR16", /* name */
274 FALSE
, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE
), /* pcrel_offset */
279 /* A 16 bit relocation without overflow. */
280 HOWTO (R_PPC64_ADDR16_LO
, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE
, /* pc_relative */
286 complain_overflow_dont
,/* complain_on_overflow */
287 bfd_elf_generic_reloc
, /* special_function */
288 "R_PPC64_ADDR16_LO", /* name */
289 FALSE
, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE
), /* pcrel_offset */
294 /* Bits 16-31 of an address. */
295 HOWTO (R_PPC64_ADDR16_HI
, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE
, /* pc_relative */
301 complain_overflow_dont
, /* complain_on_overflow */
302 bfd_elf_generic_reloc
, /* special_function */
303 "R_PPC64_ADDR16_HI", /* name */
304 FALSE
, /* partial_inplace */
306 0xffff, /* dst_mask */
307 FALSE
), /* pcrel_offset */
309 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
310 bits, treated as a signed number, is negative. */
311 HOWTO (R_PPC64_ADDR16_HA
, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE
, /* pc_relative */
317 complain_overflow_dont
, /* complain_on_overflow */
318 ppc64_elf_ha_reloc
, /* special_function */
319 "R_PPC64_ADDR16_HA", /* name */
320 FALSE
, /* partial_inplace */
322 0xffff, /* dst_mask */
323 FALSE
), /* pcrel_offset */
325 /* An absolute 16 bit branch; the lower two bits must be zero.
326 FIXME: we don't check that, we just clear them. */
327 HOWTO (R_PPC64_ADDR14
, /* type */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
331 FALSE
, /* pc_relative */
333 complain_overflow_bitfield
, /* complain_on_overflow */
334 ppc64_elf_branch_reloc
, /* special_function */
335 "R_PPC64_ADDR14", /* name */
336 FALSE
, /* partial_inplace */
338 0x0000fffc, /* dst_mask */
339 FALSE
), /* pcrel_offset */
341 /* An absolute 16 bit branch, for which bit 10 should be set to
342 indicate that the branch is expected to be taken. The lower two
343 bits must be zero. */
344 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_bitfield
, /* complain_on_overflow */
351 ppc64_elf_brtaken_reloc
, /* special_function */
352 "R_PPC64_ADDR14_BRTAKEN",/* name */
353 FALSE
, /* partial_inplace */
355 0x0000fffc, /* dst_mask */
356 FALSE
), /* pcrel_offset */
358 /* An absolute 16 bit branch, for which bit 10 should be set to
359 indicate that the branch is not expected to be taken. The lower
360 two bits must be zero. */
361 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE
, /* pc_relative */
367 complain_overflow_bitfield
, /* complain_on_overflow */
368 ppc64_elf_brtaken_reloc
, /* special_function */
369 "R_PPC64_ADDR14_BRNTAKEN",/* name */
370 FALSE
, /* partial_inplace */
372 0x0000fffc, /* dst_mask */
373 FALSE
), /* pcrel_offset */
375 /* A relative 26 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL24
, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE
, /* pc_relative */
382 complain_overflow_signed
, /* complain_on_overflow */
383 ppc64_elf_branch_reloc
, /* special_function */
384 "R_PPC64_REL24", /* name */
385 FALSE
, /* partial_inplace */
387 0x03fffffc, /* dst_mask */
388 TRUE
), /* pcrel_offset */
390 /* A relative 16 bit branch; the lower two bits must be zero. */
391 HOWTO (R_PPC64_REL14
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE
, /* pc_relative */
397 complain_overflow_signed
, /* complain_on_overflow */
398 ppc64_elf_branch_reloc
, /* special_function */
399 "R_PPC64_REL14", /* name */
400 FALSE
, /* partial_inplace */
402 0x0000fffc, /* dst_mask */
403 TRUE
), /* pcrel_offset */
405 /* A relative 16 bit branch. Bit 10 should be set to indicate that
406 the branch is expected to be taken. The lower two bits must be
408 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE
, /* pc_relative */
414 complain_overflow_signed
, /* complain_on_overflow */
415 ppc64_elf_brtaken_reloc
, /* special_function */
416 "R_PPC64_REL14_BRTAKEN", /* name */
417 FALSE
, /* partial_inplace */
419 0x0000fffc, /* dst_mask */
420 TRUE
), /* pcrel_offset */
422 /* A relative 16 bit branch. Bit 10 should be set to indicate that
423 the branch is not expected to be taken. The lower two bits must
425 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
429 TRUE
, /* pc_relative */
431 complain_overflow_signed
, /* complain_on_overflow */
432 ppc64_elf_brtaken_reloc
, /* special_function */
433 "R_PPC64_REL14_BRNTAKEN",/* name */
434 FALSE
, /* partial_inplace */
436 0x0000fffc, /* dst_mask */
437 TRUE
), /* pcrel_offset */
439 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
441 HOWTO (R_PPC64_GOT16
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_signed
, /* complain_on_overflow */
448 ppc64_elf_unhandled_reloc
, /* special_function */
449 "R_PPC64_GOT16", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
457 HOWTO (R_PPC64_GOT16_LO
, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE
, /* pc_relative */
463 complain_overflow_dont
, /* complain_on_overflow */
464 ppc64_elf_unhandled_reloc
, /* special_function */
465 "R_PPC64_GOT16_LO", /* name */
466 FALSE
, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE
), /* pcrel_offset */
471 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
473 HOWTO (R_PPC64_GOT16_HI
, /* type */
475 1, /* size (0 = byte, 1 = short, 2 = long) */
477 FALSE
, /* pc_relative */
479 complain_overflow_dont
,/* complain_on_overflow */
480 ppc64_elf_unhandled_reloc
, /* special_function */
481 "R_PPC64_GOT16_HI", /* name */
482 FALSE
, /* partial_inplace */
484 0xffff, /* dst_mask */
485 FALSE
), /* pcrel_offset */
487 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
489 HOWTO (R_PPC64_GOT16_HA
, /* type */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
493 FALSE
, /* pc_relative */
495 complain_overflow_dont
,/* complain_on_overflow */
496 ppc64_elf_unhandled_reloc
, /* special_function */
497 "R_PPC64_GOT16_HA", /* name */
498 FALSE
, /* partial_inplace */
500 0xffff, /* dst_mask */
501 FALSE
), /* pcrel_offset */
503 /* This is used only by the dynamic linker. The symbol should exist
504 both in the object being run and in some shared library. The
505 dynamic linker copies the data addressed by the symbol from the
506 shared library into the object, because the object being
507 run has to have the data at some particular address. */
508 HOWTO (R_PPC64_COPY
, /* type */
510 0, /* this one is variable size */
512 FALSE
, /* pc_relative */
514 complain_overflow_dont
, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc
, /* special_function */
516 "R_PPC64_COPY", /* name */
517 FALSE
, /* partial_inplace */
520 FALSE
), /* pcrel_offset */
522 /* Like R_PPC64_ADDR64, but used when setting global offset table
524 HOWTO (R_PPC64_GLOB_DAT
, /* type */
526 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
528 FALSE
, /* pc_relative */
530 complain_overflow_dont
, /* complain_on_overflow */
531 ppc64_elf_unhandled_reloc
, /* special_function */
532 "R_PPC64_GLOB_DAT", /* name */
533 FALSE
, /* partial_inplace */
535 ONES (64), /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 /* Created by the link editor. Marks a procedure linkage table
539 entry for a symbol. */
540 HOWTO (R_PPC64_JMP_SLOT
, /* type */
542 0, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE
, /* pc_relative */
546 complain_overflow_dont
, /* complain_on_overflow */
547 ppc64_elf_unhandled_reloc
, /* special_function */
548 "R_PPC64_JMP_SLOT", /* name */
549 FALSE
, /* partial_inplace */
552 FALSE
), /* pcrel_offset */
554 /* Used only by the dynamic linker. When the object is run, this
555 doubleword64 is set to the load address of the object, plus the
557 HOWTO (R_PPC64_RELATIVE
, /* type */
559 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
561 FALSE
, /* pc_relative */
563 complain_overflow_dont
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_PPC64_RELATIVE", /* name */
566 FALSE
, /* partial_inplace */
568 ONES (64), /* dst_mask */
569 FALSE
), /* pcrel_offset */
571 /* Like R_PPC64_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR32
, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE
, /* pc_relative */
578 complain_overflow_bitfield
, /* complain_on_overflow */
579 bfd_elf_generic_reloc
, /* special_function */
580 "R_PPC64_UADDR32", /* name */
581 FALSE
, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE
), /* pcrel_offset */
586 /* Like R_PPC64_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC64_UADDR16
, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_bitfield
, /* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_PPC64_UADDR16", /* name */
596 FALSE
, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 /* 32-bit PC relative. */
602 HOWTO (R_PPC64_REL32
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE
, /* pc_relative */
608 /* FIXME: Verify. Was complain_overflow_bitfield. */
609 complain_overflow_signed
, /* complain_on_overflow */
610 bfd_elf_generic_reloc
, /* special_function */
611 "R_PPC64_REL32", /* name */
612 FALSE
, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE
), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table. */
618 HOWTO (R_PPC64_PLT32
, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE
, /* pc_relative */
624 complain_overflow_bitfield
, /* complain_on_overflow */
625 ppc64_elf_unhandled_reloc
, /* special_function */
626 "R_PPC64_PLT32", /* name */
627 FALSE
, /* partial_inplace */
629 0xffffffff, /* dst_mask */
630 FALSE
), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: R_PPC64_PLTREL32 not supported. */
634 HOWTO (R_PPC64_PLTREL32
, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE
, /* pc_relative */
640 complain_overflow_signed
, /* complain_on_overflow */
641 bfd_elf_generic_reloc
, /* special_function */
642 "R_PPC64_PLTREL32", /* name */
643 FALSE
, /* partial_inplace */
645 0xffffffff, /* dst_mask */
646 TRUE
), /* pcrel_offset */
648 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC64_PLT16_LO
, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE
, /* pc_relative */
656 complain_overflow_dont
, /* complain_on_overflow */
657 ppc64_elf_unhandled_reloc
, /* special_function */
658 "R_PPC64_PLT16_LO", /* name */
659 FALSE
, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE
), /* pcrel_offset */
664 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC64_PLT16_HI
, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 ppc64_elf_unhandled_reloc
, /* special_function */
674 "R_PPC64_PLT16_HI", /* name */
675 FALSE
, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE
), /* pcrel_offset */
680 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC64_PLT16_HA
, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE
, /* pc_relative */
688 complain_overflow_dont
, /* complain_on_overflow */
689 ppc64_elf_unhandled_reloc
, /* special_function */
690 "R_PPC64_PLT16_HA", /* name */
691 FALSE
, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF
, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE
, /* pc_relative */
703 complain_overflow_bitfield
, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc
, /* special_function */
705 "R_PPC64_SECTOFF", /* name */
706 FALSE
, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE
), /* pcrel_offset */
711 /* Like R_PPC64_SECTOFF, but no overflow warning. */
712 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE
, /* pc_relative */
718 complain_overflow_dont
, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc
, /* special_function */
720 "R_PPC64_SECTOFF_LO", /* name */
721 FALSE
, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE
), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE
, /* pc_relative */
733 complain_overflow_dont
, /* complain_on_overflow */
734 ppc64_elf_sectoff_reloc
, /* special_function */
735 "R_PPC64_SECTOFF_HI", /* name */
736 FALSE
, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE
), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE
, /* pc_relative */
748 complain_overflow_dont
, /* complain_on_overflow */
749 ppc64_elf_sectoff_ha_reloc
, /* special_function */
750 "R_PPC64_SECTOFF_HA", /* name */
751 FALSE
, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE
), /* pcrel_offset */
756 /* Like R_PPC64_REL24 without touching the two least significant bits. */
757 HOWTO (R_PPC64_REL30
, /* type */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 TRUE
, /* pc_relative */
763 complain_overflow_dont
, /* complain_on_overflow */
764 bfd_elf_generic_reloc
, /* special_function */
765 "R_PPC64_REL30", /* name */
766 FALSE
, /* partial_inplace */
768 0xfffffffc, /* dst_mask */
769 TRUE
), /* pcrel_offset */
771 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
773 /* A standard 64-bit relocation. */
774 HOWTO (R_PPC64_ADDR64
, /* type */
776 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
, /* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_PPC64_ADDR64", /* name */
783 FALSE
, /* partial_inplace */
785 ONES (64), /* dst_mask */
786 FALSE
), /* pcrel_offset */
788 /* The bits 32-47 of an address. */
789 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
791 1, /* size (0 = byte, 1 = short, 2 = long) */
793 FALSE
, /* pc_relative */
795 complain_overflow_dont
, /* complain_on_overflow */
796 bfd_elf_generic_reloc
, /* special_function */
797 "R_PPC64_ADDR16_HIGHER", /* name */
798 FALSE
, /* partial_inplace */
800 0xffff, /* dst_mask */
801 FALSE
), /* pcrel_offset */
803 /* The bits 32-47 of an address, plus 1 if the contents of the low
804 16 bits, treated as a signed number, is negative. */
805 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_dont
, /* complain_on_overflow */
812 ppc64_elf_ha_reloc
, /* special_function */
813 "R_PPC64_ADDR16_HIGHERA", /* name */
814 FALSE
, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE
), /* pcrel_offset */
819 /* The bits 48-63 of an address. */
820 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE
, /* pc_relative */
826 complain_overflow_dont
, /* complain_on_overflow */
827 bfd_elf_generic_reloc
, /* special_function */
828 "R_PPC64_ADDR16_HIGHEST", /* name */
829 FALSE
, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE
), /* pcrel_offset */
834 /* The bits 48-63 of an address, plus 1 if the contents of the low
835 16 bits, treated as a signed number, is negative. */
836 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
838 1, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE
, /* pc_relative */
842 complain_overflow_dont
, /* complain_on_overflow */
843 ppc64_elf_ha_reloc
, /* special_function */
844 "R_PPC64_ADDR16_HIGHESTA", /* name */
845 FALSE
, /* partial_inplace */
847 0xffff, /* dst_mask */
848 FALSE
), /* pcrel_offset */
850 /* Like ADDR64, but may be unaligned. */
851 HOWTO (R_PPC64_UADDR64
, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 FALSE
, /* pc_relative */
857 complain_overflow_dont
, /* complain_on_overflow */
858 bfd_elf_generic_reloc
, /* special_function */
859 "R_PPC64_UADDR64", /* name */
860 FALSE
, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 FALSE
), /* pcrel_offset */
865 /* 64-bit relative relocation. */
866 HOWTO (R_PPC64_REL64
, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 TRUE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 bfd_elf_generic_reloc
, /* special_function */
874 "R_PPC64_REL64", /* name */
875 FALSE
, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 TRUE
), /* pcrel_offset */
880 /* 64-bit relocation to the symbol's procedure linkage table. */
881 HOWTO (R_PPC64_PLT64
, /* type */
883 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
885 FALSE
, /* pc_relative */
887 complain_overflow_dont
, /* complain_on_overflow */
888 ppc64_elf_unhandled_reloc
, /* special_function */
889 "R_PPC64_PLT64", /* name */
890 FALSE
, /* partial_inplace */
892 ONES (64), /* dst_mask */
893 FALSE
), /* pcrel_offset */
895 /* 64-bit PC relative relocation to the symbol's procedure linkage
897 /* FIXME: R_PPC64_PLTREL64 not supported. */
898 HOWTO (R_PPC64_PLTREL64
, /* type */
900 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
902 TRUE
, /* pc_relative */
904 complain_overflow_dont
, /* complain_on_overflow */
905 ppc64_elf_unhandled_reloc
, /* special_function */
906 "R_PPC64_PLTREL64", /* name */
907 FALSE
, /* partial_inplace */
909 ONES (64), /* dst_mask */
910 TRUE
), /* pcrel_offset */
912 /* 16 bit TOC-relative relocation. */
914 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
915 HOWTO (R_PPC64_TOC16
, /* type */
917 1, /* size (0 = byte, 1 = short, 2 = long) */
919 FALSE
, /* pc_relative */
921 complain_overflow_signed
, /* complain_on_overflow */
922 ppc64_elf_toc_reloc
, /* special_function */
923 "R_PPC64_TOC16", /* name */
924 FALSE
, /* partial_inplace */
926 0xffff, /* dst_mask */
927 FALSE
), /* pcrel_offset */
929 /* 16 bit TOC-relative relocation without overflow. */
931 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
932 HOWTO (R_PPC64_TOC16_LO
, /* type */
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE
, /* pc_relative */
938 complain_overflow_dont
, /* complain_on_overflow */
939 ppc64_elf_toc_reloc
, /* special_function */
940 "R_PPC64_TOC16_LO", /* name */
941 FALSE
, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE
), /* pcrel_offset */
946 /* 16 bit TOC-relative relocation, high 16 bits. */
948 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
949 HOWTO (R_PPC64_TOC16_HI
, /* type */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
953 FALSE
, /* pc_relative */
955 complain_overflow_dont
, /* complain_on_overflow */
956 ppc64_elf_toc_reloc
, /* special_function */
957 "R_PPC64_TOC16_HI", /* name */
958 FALSE
, /* partial_inplace */
960 0xffff, /* dst_mask */
961 FALSE
), /* pcrel_offset */
963 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
964 contents of the low 16 bits, treated as a signed number, is
967 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
968 HOWTO (R_PPC64_TOC16_HA
, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE
, /* pc_relative */
974 complain_overflow_dont
, /* complain_on_overflow */
975 ppc64_elf_toc_ha_reloc
, /* special_function */
976 "R_PPC64_TOC16_HA", /* name */
977 FALSE
, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE
), /* pcrel_offset */
982 /* 64-bit relocation; insert value of TOC base (.TOC.). */
984 /* R_PPC64_TOC 51 doubleword64 .TOC. */
985 HOWTO (R_PPC64_TOC
, /* type */
987 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
989 FALSE
, /* pc_relative */
991 complain_overflow_bitfield
, /* complain_on_overflow */
992 ppc64_elf_toc64_reloc
, /* special_function */
993 "R_PPC64_TOC", /* name */
994 FALSE
, /* partial_inplace */
996 ONES (64), /* dst_mask */
997 FALSE
), /* pcrel_offset */
999 /* Like R_PPC64_GOT16, but also informs the link editor that the
1000 value to relocate may (!) refer to a PLT entry which the link
1001 editor (a) may replace with the symbol value. If the link editor
1002 is unable to fully resolve the symbol, it may (b) create a PLT
1003 entry and store the address to the new PLT entry in the GOT.
1004 This permits lazy resolution of function symbols at run time.
1005 The link editor may also skip all of this and just (c) emit a
1006 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1007 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16
, /* type */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE
, /* pc_relative */
1014 complain_overflow_signed
, /* complain_on_overflow */
1015 ppc64_elf_unhandled_reloc
, /* special_function */
1016 "R_PPC64_PLTGOT16", /* name */
1017 FALSE
, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE
), /* pcrel_offset */
1022 /* Like R_PPC64_PLTGOT16, but without overflow. */
1023 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1024 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE
, /* pc_relative */
1030 complain_overflow_dont
, /* complain_on_overflow */
1031 ppc64_elf_unhandled_reloc
, /* special_function */
1032 "R_PPC64_PLTGOT16_LO", /* name */
1033 FALSE
, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE
), /* pcrel_offset */
1038 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1039 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1040 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 FALSE
, /* pc_relative */
1046 complain_overflow_dont
, /* complain_on_overflow */
1047 ppc64_elf_unhandled_reloc
, /* special_function */
1048 "R_PPC64_PLTGOT16_HI", /* name */
1049 FALSE
, /* partial_inplace */
1051 0xffff, /* dst_mask */
1052 FALSE
), /* pcrel_offset */
1054 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1055 1 if the contents of the low 16 bits, treated as a signed number,
1057 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1059 16, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE
, /* pc_relative */
1064 complain_overflow_dont
,/* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc
, /* special_function */
1066 "R_PPC64_PLTGOT16_HA", /* name */
1067 FALSE
, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE
), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_bitfield
, /* complain_on_overflow */
1080 bfd_elf_generic_reloc
, /* special_function */
1081 "R_PPC64_ADDR16_DS", /* name */
1082 FALSE
, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_dont
,/* complain_on_overflow */
1095 bfd_elf_generic_reloc
, /* special_function */
1096 "R_PPC64_ADDR16_LO_DS",/* name */
1097 FALSE
, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_DS
, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_signed
, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc
, /* special_function */
1111 "R_PPC64_GOT16_DS", /* name */
1112 FALSE
, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_dont
, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc
, /* special_function */
1126 "R_PPC64_GOT16_LO_DS", /* name */
1127 FALSE
, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_dont
, /* complain_on_overflow */
1140 ppc64_elf_unhandled_reloc
, /* special_function */
1141 "R_PPC64_PLT16_LO_DS", /* name */
1142 FALSE
, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_bitfield
, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc
, /* special_function */
1156 "R_PPC64_SECTOFF_DS", /* name */
1157 FALSE
, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE
, /* pc_relative */
1169 complain_overflow_dont
, /* complain_on_overflow */
1170 ppc64_elf_sectoff_reloc
, /* special_function */
1171 "R_PPC64_SECTOFF_LO_DS",/* name */
1172 FALSE
, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE
), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_DS
, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE
, /* pc_relative */
1184 complain_overflow_signed
, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc
, /* special_function */
1186 "R_PPC64_TOC16_DS", /* name */
1187 FALSE
, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE
), /* pcrel_offset */
1192 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE
, /* pc_relative */
1199 complain_overflow_dont
, /* complain_on_overflow */
1200 ppc64_elf_toc_reloc
, /* special_function */
1201 "R_PPC64_TOC16_LO_DS", /* name */
1202 FALSE
, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE
), /* pcrel_offset */
1207 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1208 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1209 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE
, /* pc_relative */
1215 complain_overflow_signed
, /* complain_on_overflow */
1216 ppc64_elf_unhandled_reloc
, /* special_function */
1217 "R_PPC64_PLTGOT16_DS", /* name */
1218 FALSE
, /* partial_inplace */
1220 0xfffc, /* dst_mask */
1221 FALSE
), /* pcrel_offset */
1223 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1224 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1225 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE
, /* pc_relative */
1231 complain_overflow_dont
, /* complain_on_overflow */
1232 ppc64_elf_unhandled_reloc
, /* special_function */
1233 "R_PPC64_PLTGOT16_LO_DS",/* name */
1234 FALSE
, /* partial_inplace */
1236 0xfffc, /* dst_mask */
1237 FALSE
), /* pcrel_offset */
1239 /* Marker relocs for TLS. */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE
, /* pc_relative */
1246 complain_overflow_dont
, /* complain_on_overflow */
1247 bfd_elf_generic_reloc
, /* special_function */
1248 "R_PPC64_TLS", /* name */
1249 FALSE
, /* partial_inplace */
1252 FALSE
), /* pcrel_offset */
1254 HOWTO (R_PPC64_TLSGD
,
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE
, /* pc_relative */
1260 complain_overflow_dont
, /* complain_on_overflow */
1261 bfd_elf_generic_reloc
, /* special_function */
1262 "R_PPC64_TLSGD", /* name */
1263 FALSE
, /* partial_inplace */
1266 FALSE
), /* pcrel_offset */
1268 HOWTO (R_PPC64_TLSLD
,
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 bfd_elf_generic_reloc
, /* special_function */
1276 "R_PPC64_TLSLD", /* name */
1277 FALSE
, /* partial_inplace */
1280 FALSE
), /* pcrel_offset */
1282 /* Computes the load module index of the load module that contains the
1283 definition of its TLS sym. */
1284 HOWTO (R_PPC64_DTPMOD64
,
1286 4, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE
, /* pc_relative */
1290 complain_overflow_dont
, /* complain_on_overflow */
1291 ppc64_elf_unhandled_reloc
, /* special_function */
1292 "R_PPC64_DTPMOD64", /* name */
1293 FALSE
, /* partial_inplace */
1295 ONES (64), /* dst_mask */
1296 FALSE
), /* pcrel_offset */
1298 /* Computes a dtv-relative displacement, the difference between the value
1299 of sym+add and the base address of the thread-local storage block that
1300 contains the definition of sym, minus 0x8000. */
1301 HOWTO (R_PPC64_DTPREL64
,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE
, /* pc_relative */
1307 complain_overflow_dont
, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc
, /* special_function */
1309 "R_PPC64_DTPREL64", /* name */
1310 FALSE
, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE
), /* pcrel_offset */
1315 /* A 16 bit dtprel reloc. */
1316 HOWTO (R_PPC64_DTPREL16
,
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 FALSE
, /* pc_relative */
1322 complain_overflow_signed
, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc
, /* special_function */
1324 "R_PPC64_DTPREL16", /* name */
1325 FALSE
, /* partial_inplace */
1327 0xffff, /* dst_mask */
1328 FALSE
), /* pcrel_offset */
1330 /* Like DTPREL16, but no overflow. */
1331 HOWTO (R_PPC64_DTPREL16_LO
,
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_dont
, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc
, /* special_function */
1339 "R_PPC64_DTPREL16_LO", /* name */
1340 FALSE
, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE
), /* pcrel_offset */
1345 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HI
,
1347 16, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE
, /* pc_relative */
1352 complain_overflow_dont
, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc
, /* special_function */
1354 "R_PPC64_DTPREL16_HI", /* name */
1355 FALSE
, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE
), /* pcrel_offset */
1360 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HA
,
1362 16, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 FALSE
, /* pc_relative */
1367 complain_overflow_dont
, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc
, /* special_function */
1369 "R_PPC64_DTPREL16_HA", /* name */
1370 FALSE
, /* partial_inplace */
1372 0xffff, /* dst_mask */
1373 FALSE
), /* pcrel_offset */
1375 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1377 32, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE
, /* pc_relative */
1382 complain_overflow_dont
, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc
, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHER", /* name */
1385 FALSE
, /* partial_inplace */
1387 0xffff, /* dst_mask */
1388 FALSE
), /* pcrel_offset */
1390 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1392 32, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE
, /* pc_relative */
1397 complain_overflow_dont
, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc
, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHERA", /* name */
1400 FALSE
, /* partial_inplace */
1402 0xffff, /* dst_mask */
1403 FALSE
), /* pcrel_offset */
1405 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1406 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1407 48, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 FALSE
, /* pc_relative */
1412 complain_overflow_dont
, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc
, /* special_function */
1414 "R_PPC64_DTPREL16_HIGHEST", /* name */
1415 FALSE
, /* partial_inplace */
1417 0xffff, /* dst_mask */
1418 FALSE
), /* pcrel_offset */
1420 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1421 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1422 48, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 FALSE
, /* pc_relative */
1427 complain_overflow_dont
, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc
, /* special_function */
1429 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1430 FALSE
, /* partial_inplace */
1432 0xffff, /* dst_mask */
1433 FALSE
), /* pcrel_offset */
1435 /* Like DTPREL16, but for insns with a DS field. */
1436 HOWTO (R_PPC64_DTPREL16_DS
,
1438 1, /* size (0 = byte, 1 = short, 2 = long) */
1440 FALSE
, /* pc_relative */
1442 complain_overflow_signed
, /* complain_on_overflow */
1443 ppc64_elf_unhandled_reloc
, /* special_function */
1444 "R_PPC64_DTPREL16_DS", /* name */
1445 FALSE
, /* partial_inplace */
1447 0xfffc, /* dst_mask */
1448 FALSE
), /* pcrel_offset */
1450 /* Like DTPREL16_DS, but no overflow. */
1451 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 FALSE
, /* pc_relative */
1457 complain_overflow_dont
, /* complain_on_overflow */
1458 ppc64_elf_unhandled_reloc
, /* special_function */
1459 "R_PPC64_DTPREL16_LO_DS", /* name */
1460 FALSE
, /* partial_inplace */
1462 0xfffc, /* dst_mask */
1463 FALSE
), /* pcrel_offset */
1465 /* Computes a tp-relative displacement, the difference between the value of
1466 sym+add and the value of the thread pointer (r13). */
1467 HOWTO (R_PPC64_TPREL64
,
1469 4, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE
, /* pc_relative */
1473 complain_overflow_dont
, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc
, /* special_function */
1475 "R_PPC64_TPREL64", /* name */
1476 FALSE
, /* partial_inplace */
1478 ONES (64), /* dst_mask */
1479 FALSE
), /* pcrel_offset */
1481 /* A 16 bit tprel reloc. */
1482 HOWTO (R_PPC64_TPREL16
,
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE
, /* pc_relative */
1488 complain_overflow_signed
, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc
, /* special_function */
1490 "R_PPC64_TPREL16", /* name */
1491 FALSE
, /* partial_inplace */
1493 0xffff, /* dst_mask */
1494 FALSE
), /* pcrel_offset */
1496 /* Like TPREL16, but no overflow. */
1497 HOWTO (R_PPC64_TPREL16_LO
,
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE
, /* pc_relative */
1503 complain_overflow_dont
, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc
, /* special_function */
1505 "R_PPC64_TPREL16_LO", /* name */
1506 FALSE
, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE
), /* pcrel_offset */
1511 /* Like TPREL16_LO, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HI
,
1513 16, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE
, /* pc_relative */
1518 complain_overflow_dont
, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc
, /* special_function */
1520 "R_PPC64_TPREL16_HI", /* name */
1521 FALSE
, /* partial_inplace */
1523 0xffff, /* dst_mask */
1524 FALSE
), /* pcrel_offset */
1526 /* Like TPREL16_HI, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HA
,
1528 16, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE
, /* pc_relative */
1533 complain_overflow_dont
, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc
, /* special_function */
1535 "R_PPC64_TPREL16_HA", /* name */
1536 FALSE
, /* partial_inplace */
1538 0xffff, /* dst_mask */
1539 FALSE
), /* pcrel_offset */
1541 /* Like TPREL16_HI, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHER
,
1543 32, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_dont
, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc
, /* special_function */
1550 "R_PPC64_TPREL16_HIGHER", /* name */
1551 FALSE
, /* partial_inplace */
1553 0xffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1558 32, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 FALSE
, /* pc_relative */
1563 complain_overflow_dont
, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc
, /* special_function */
1565 "R_PPC64_TPREL16_HIGHERA", /* name */
1566 FALSE
, /* partial_inplace */
1568 0xffff, /* dst_mask */
1569 FALSE
), /* pcrel_offset */
1571 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1572 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1573 48, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 FALSE
, /* pc_relative */
1578 complain_overflow_dont
, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc
, /* special_function */
1580 "R_PPC64_TPREL16_HIGHEST", /* name */
1581 FALSE
, /* partial_inplace */
1583 0xffff, /* dst_mask */
1584 FALSE
), /* pcrel_offset */
1586 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1587 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1588 48, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE
, /* pc_relative */
1593 complain_overflow_dont
, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc
, /* special_function */
1595 "R_PPC64_TPREL16_HIGHESTA", /* name */
1596 FALSE
, /* partial_inplace */
1598 0xffff, /* dst_mask */
1599 FALSE
), /* pcrel_offset */
1601 /* Like TPREL16, but for insns with a DS field. */
1602 HOWTO (R_PPC64_TPREL16_DS
,
1604 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE
, /* pc_relative */
1608 complain_overflow_signed
, /* complain_on_overflow */
1609 ppc64_elf_unhandled_reloc
, /* special_function */
1610 "R_PPC64_TPREL16_DS", /* name */
1611 FALSE
, /* partial_inplace */
1613 0xfffc, /* dst_mask */
1614 FALSE
), /* pcrel_offset */
1616 /* Like TPREL16_DS, but no overflow. */
1617 HOWTO (R_PPC64_TPREL16_LO_DS
,
1619 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 FALSE
, /* pc_relative */
1623 complain_overflow_dont
, /* complain_on_overflow */
1624 ppc64_elf_unhandled_reloc
, /* special_function */
1625 "R_PPC64_TPREL16_LO_DS", /* name */
1626 FALSE
, /* partial_inplace */
1628 0xfffc, /* dst_mask */
1629 FALSE
), /* pcrel_offset */
1631 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1632 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1633 to the first entry relative to the TOC base (r2). */
1634 HOWTO (R_PPC64_GOT_TLSGD16
,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE
, /* pc_relative */
1640 complain_overflow_signed
, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc
, /* special_function */
1642 "R_PPC64_GOT_TLSGD16", /* name */
1643 FALSE
, /* partial_inplace */
1645 0xffff, /* dst_mask */
1646 FALSE
), /* pcrel_offset */
1648 /* Like GOT_TLSGD16, but no overflow. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc
, /* special_function */
1657 "R_PPC64_GOT_TLSGD16_LO", /* name */
1658 FALSE
, /* partial_inplace */
1660 0xffff, /* dst_mask */
1661 FALSE
), /* pcrel_offset */
1663 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1664 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1665 16, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1668 FALSE
, /* pc_relative */
1670 complain_overflow_dont
, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc
, /* special_function */
1672 "R_PPC64_GOT_TLSGD16_HI", /* name */
1673 FALSE
, /* partial_inplace */
1675 0xffff, /* dst_mask */
1676 FALSE
), /* pcrel_offset */
1678 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1679 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE
, /* pc_relative */
1685 complain_overflow_dont
, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc
, /* special_function */
1687 "R_PPC64_GOT_TLSGD16_HA", /* name */
1688 FALSE
, /* partial_inplace */
1690 0xffff, /* dst_mask */
1691 FALSE
), /* pcrel_offset */
1693 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1694 with values (sym+add)@dtpmod and zero, and computes the offset to the
1695 first entry relative to the TOC base (r2). */
1696 HOWTO (R_PPC64_GOT_TLSLD16
,
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE
, /* pc_relative */
1702 complain_overflow_signed
, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc
, /* special_function */
1704 "R_PPC64_GOT_TLSLD16", /* name */
1705 FALSE
, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE
), /* pcrel_offset */
1710 /* Like GOT_TLSLD16, but no overflow. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE
, /* pc_relative */
1717 complain_overflow_dont
, /* complain_on_overflow */
1718 ppc64_elf_unhandled_reloc
, /* special_function */
1719 "R_PPC64_GOT_TLSLD16_LO", /* name */
1720 FALSE
, /* partial_inplace */
1722 0xffff, /* dst_mask */
1723 FALSE
), /* pcrel_offset */
1725 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1726 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE
, /* pc_relative */
1732 complain_overflow_dont
, /* complain_on_overflow */
1733 ppc64_elf_unhandled_reloc
, /* special_function */
1734 "R_PPC64_GOT_TLSLD16_HI", /* name */
1735 FALSE
, /* partial_inplace */
1737 0xffff, /* dst_mask */
1738 FALSE
), /* pcrel_offset */
1740 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1741 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1742 16, /* rightshift */
1743 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 FALSE
, /* pc_relative */
1747 complain_overflow_dont
, /* complain_on_overflow */
1748 ppc64_elf_unhandled_reloc
, /* special_function */
1749 "R_PPC64_GOT_TLSLD16_HA", /* name */
1750 FALSE
, /* partial_inplace */
1752 0xffff, /* dst_mask */
1753 FALSE
), /* pcrel_offset */
1755 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1756 the offset to the entry relative to the TOC base (r2). */
1757 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 FALSE
, /* pc_relative */
1763 complain_overflow_signed
, /* complain_on_overflow */
1764 ppc64_elf_unhandled_reloc
, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_DS", /* name */
1766 FALSE
, /* partial_inplace */
1768 0xfffc, /* dst_mask */
1769 FALSE
), /* pcrel_offset */
1771 /* Like GOT_DTPREL16_DS, but no overflow. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 FALSE
, /* pc_relative */
1778 complain_overflow_dont
, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc
, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1781 FALSE
, /* partial_inplace */
1783 0xfffc, /* dst_mask */
1784 FALSE
), /* pcrel_offset */
1786 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1787 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1788 16, /* rightshift */
1789 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE
, /* pc_relative */
1793 complain_overflow_dont
, /* complain_on_overflow */
1794 ppc64_elf_unhandled_reloc
, /* special_function */
1795 "R_PPC64_GOT_DTPREL16_HI", /* name */
1796 FALSE
, /* partial_inplace */
1798 0xffff, /* dst_mask */
1799 FALSE
), /* pcrel_offset */
1801 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1802 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1803 16, /* rightshift */
1804 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE
, /* pc_relative */
1808 complain_overflow_dont
, /* complain_on_overflow */
1809 ppc64_elf_unhandled_reloc
, /* special_function */
1810 "R_PPC64_GOT_DTPREL16_HA", /* name */
1811 FALSE
, /* partial_inplace */
1813 0xffff, /* dst_mask */
1814 FALSE
), /* pcrel_offset */
1816 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1817 offset to the entry relative to the TOC base (r2). */
1818 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE
, /* pc_relative */
1824 complain_overflow_signed
, /* complain_on_overflow */
1825 ppc64_elf_unhandled_reloc
, /* special_function */
1826 "R_PPC64_GOT_TPREL16_DS", /* name */
1827 FALSE
, /* partial_inplace */
1829 0xfffc, /* dst_mask */
1830 FALSE
), /* pcrel_offset */
1832 /* Like GOT_TPREL16_DS, but no overflow. */
1833 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE
, /* pc_relative */
1839 complain_overflow_dont
, /* complain_on_overflow */
1840 ppc64_elf_unhandled_reloc
, /* special_function */
1841 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1842 FALSE
, /* partial_inplace */
1844 0xfffc, /* dst_mask */
1845 FALSE
), /* pcrel_offset */
1847 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1848 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1849 16, /* rightshift */
1850 1, /* size (0 = byte, 1 = short, 2 = long) */
1852 FALSE
, /* pc_relative */
1854 complain_overflow_dont
, /* complain_on_overflow */
1855 ppc64_elf_unhandled_reloc
, /* special_function */
1856 "R_PPC64_GOT_TPREL16_HI", /* name */
1857 FALSE
, /* partial_inplace */
1859 0xffff, /* dst_mask */
1860 FALSE
), /* pcrel_offset */
1862 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1863 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1864 16, /* rightshift */
1865 1, /* size (0 = byte, 1 = short, 2 = long) */
1867 FALSE
, /* pc_relative */
1869 complain_overflow_dont
, /* complain_on_overflow */
1870 ppc64_elf_unhandled_reloc
, /* special_function */
1871 "R_PPC64_GOT_TPREL16_HA", /* name */
1872 FALSE
, /* partial_inplace */
1874 0xffff, /* dst_mask */
1875 FALSE
), /* pcrel_offset */
1877 HOWTO (R_PPC64_JMP_IREL
, /* type */
1879 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1881 FALSE
, /* pc_relative */
1883 complain_overflow_dont
, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc
, /* special_function */
1885 "R_PPC64_JMP_IREL", /* name */
1886 FALSE
, /* partial_inplace */
1889 FALSE
), /* pcrel_offset */
1891 HOWTO (R_PPC64_IRELATIVE
, /* type */
1893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1895 FALSE
, /* pc_relative */
1897 complain_overflow_dont
, /* complain_on_overflow */
1898 bfd_elf_generic_reloc
, /* special_function */
1899 "R_PPC64_IRELATIVE", /* name */
1900 FALSE
, /* partial_inplace */
1902 ONES (64), /* dst_mask */
1903 FALSE
), /* pcrel_offset */
1905 /* A 16 bit relative relocation. */
1906 HOWTO (R_PPC64_REL16
, /* type */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1910 TRUE
, /* pc_relative */
1912 complain_overflow_bitfield
, /* complain_on_overflow */
1913 bfd_elf_generic_reloc
, /* special_function */
1914 "R_PPC64_REL16", /* name */
1915 FALSE
, /* partial_inplace */
1917 0xffff, /* dst_mask */
1918 TRUE
), /* pcrel_offset */
1920 /* A 16 bit relative relocation without overflow. */
1921 HOWTO (R_PPC64_REL16_LO
, /* type */
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1925 TRUE
, /* pc_relative */
1927 complain_overflow_dont
,/* complain_on_overflow */
1928 bfd_elf_generic_reloc
, /* special_function */
1929 "R_PPC64_REL16_LO", /* name */
1930 FALSE
, /* partial_inplace */
1932 0xffff, /* dst_mask */
1933 TRUE
), /* pcrel_offset */
1935 /* The high order 16 bits of a relative address. */
1936 HOWTO (R_PPC64_REL16_HI
, /* type */
1937 16, /* rightshift */
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1940 TRUE
, /* pc_relative */
1942 complain_overflow_dont
, /* complain_on_overflow */
1943 bfd_elf_generic_reloc
, /* special_function */
1944 "R_PPC64_REL16_HI", /* name */
1945 FALSE
, /* partial_inplace */
1947 0xffff, /* dst_mask */
1948 TRUE
), /* pcrel_offset */
1950 /* The high order 16 bits of a relative address, plus 1 if the contents of
1951 the low 16 bits, treated as a signed number, is negative. */
1952 HOWTO (R_PPC64_REL16_HA
, /* type */
1953 16, /* rightshift */
1954 1, /* size (0 = byte, 1 = short, 2 = long) */
1956 TRUE
, /* pc_relative */
1958 complain_overflow_dont
, /* complain_on_overflow */
1959 ppc64_elf_ha_reloc
, /* special_function */
1960 "R_PPC64_REL16_HA", /* name */
1961 FALSE
, /* partial_inplace */
1963 0xffff, /* dst_mask */
1964 TRUE
), /* pcrel_offset */
1966 /* GNU extension to record C++ vtable hierarchy. */
1967 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1969 0, /* size (0 = byte, 1 = short, 2 = long) */
1971 FALSE
, /* pc_relative */
1973 complain_overflow_dont
, /* complain_on_overflow */
1974 NULL
, /* special_function */
1975 "R_PPC64_GNU_VTINHERIT", /* name */
1976 FALSE
, /* partial_inplace */
1979 FALSE
), /* pcrel_offset */
1981 /* GNU extension to record C++ vtable member usage. */
1982 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1984 0, /* size (0 = byte, 1 = short, 2 = long) */
1986 FALSE
, /* pc_relative */
1988 complain_overflow_dont
, /* complain_on_overflow */
1989 NULL
, /* special_function */
1990 "R_PPC64_GNU_VTENTRY", /* name */
1991 FALSE
, /* partial_inplace */
1994 FALSE
), /* pcrel_offset */
1998 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2002 ppc_howto_init (void)
2004 unsigned int i
, type
;
2007 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2010 type
= ppc64_elf_howto_raw
[i
].type
;
2011 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2012 / sizeof (ppc64_elf_howto_table
[0])));
2013 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2017 static reloc_howto_type
*
2018 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2019 bfd_reloc_code_real_type code
)
2021 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2023 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2024 /* Initialize howto table if needed. */
2032 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2034 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2036 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2038 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2040 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2042 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2044 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2046 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2048 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2050 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2052 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2054 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2056 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2058 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2060 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2062 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2064 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2066 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2068 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2070 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2072 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2074 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2076 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2078 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2080 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2082 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2084 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2086 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2088 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2090 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2092 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2094 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2096 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2098 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2100 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2102 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2104 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2106 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2108 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2110 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2112 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2114 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2116 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2118 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2120 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2122 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2124 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2126 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2128 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2130 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2132 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2134 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2136 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2138 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2140 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2142 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2144 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2146 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2148 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2150 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2152 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2154 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2156 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2158 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2160 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2162 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2164 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2166 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2168 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2170 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2172 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2174 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2176 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2178 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2180 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2186 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2188 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2194 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2196 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2198 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2202 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2204 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2210 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2212 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2214 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2222 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2224 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2226 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2234 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2236 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2238 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2240 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2242 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2244 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2248 return ppc64_elf_howto_table
[r
];
2251 static reloc_howto_type
*
2252 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2258 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2260 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2261 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2262 return &ppc64_elf_howto_raw
[i
];
2267 /* Set the howto pointer for a PowerPC ELF reloc. */
2270 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2271 Elf_Internal_Rela
*dst
)
2275 /* Initialize howto table if needed. */
2276 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2279 type
= ELF64_R_TYPE (dst
->r_info
);
2280 if (type
>= (sizeof (ppc64_elf_howto_table
)
2281 / sizeof (ppc64_elf_howto_table
[0])))
2283 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2285 type
= R_PPC64_NONE
;
2287 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2290 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2292 static bfd_reloc_status_type
2293 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2294 void *data
, asection
*input_section
,
2295 bfd
*output_bfd
, char **error_message
)
2297 /* If this is a relocatable link (output_bfd test tells us), just
2298 call the generic function. Any adjustment will be done at final
2300 if (output_bfd
!= NULL
)
2301 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2302 input_section
, output_bfd
, error_message
);
2304 /* Adjust the addend for sign extension of the low 16 bits.
2305 We won't actually be using the low 16 bits, so trashing them
2307 reloc_entry
->addend
+= 0x8000;
2308 return bfd_reloc_continue
;
2311 static bfd_reloc_status_type
2312 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2313 void *data
, asection
*input_section
,
2314 bfd
*output_bfd
, char **error_message
)
2316 if (output_bfd
!= NULL
)
2317 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2318 input_section
, output_bfd
, error_message
);
2320 if (strcmp (symbol
->section
->name
, ".opd") == 0
2321 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2323 bfd_vma dest
= opd_entry_value (symbol
->section
,
2324 symbol
->value
+ reloc_entry
->addend
,
2326 if (dest
!= (bfd_vma
) -1)
2327 reloc_entry
->addend
= dest
- (symbol
->value
2328 + symbol
->section
->output_section
->vma
2329 + symbol
->section
->output_offset
);
2331 return bfd_reloc_continue
;
2334 static bfd_reloc_status_type
2335 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2336 void *data
, asection
*input_section
,
2337 bfd
*output_bfd
, char **error_message
)
2340 enum elf_ppc64_reloc_type r_type
;
2341 bfd_size_type octets
;
2342 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2343 bfd_boolean is_power4
= FALSE
;
2345 /* If this is a relocatable link (output_bfd test tells us), just
2346 call the generic function. Any adjustment will be done at final
2348 if (output_bfd
!= NULL
)
2349 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2350 input_section
, output_bfd
, error_message
);
2352 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2353 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2354 insn
&= ~(0x01 << 21);
2355 r_type
= reloc_entry
->howto
->type
;
2356 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2357 || r_type
== R_PPC64_REL14_BRTAKEN
)
2358 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2362 /* Set 'a' bit. This is 0b00010 in BO field for branch
2363 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2364 for branch on CTR insns (BO == 1a00t or 1a01t). */
2365 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2367 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2377 if (!bfd_is_com_section (symbol
->section
))
2378 target
= symbol
->value
;
2379 target
+= symbol
->section
->output_section
->vma
;
2380 target
+= symbol
->section
->output_offset
;
2381 target
+= reloc_entry
->addend
;
2383 from
= (reloc_entry
->address
2384 + input_section
->output_offset
2385 + input_section
->output_section
->vma
);
2387 /* Invert 'y' bit if not the default. */
2388 if ((bfd_signed_vma
) (target
- from
) < 0)
2391 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2393 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2394 input_section
, output_bfd
, error_message
);
2397 static bfd_reloc_status_type
2398 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2399 void *data
, asection
*input_section
,
2400 bfd
*output_bfd
, char **error_message
)
2402 /* If this is a relocatable link (output_bfd test tells us), just
2403 call the generic function. Any adjustment will be done at final
2405 if (output_bfd
!= NULL
)
2406 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2407 input_section
, output_bfd
, error_message
);
2409 /* Subtract the symbol section base address. */
2410 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2411 return bfd_reloc_continue
;
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2416 void *data
, asection
*input_section
,
2417 bfd
*output_bfd
, char **error_message
)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd
!= NULL
)
2423 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2424 input_section
, output_bfd
, error_message
);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2429 /* Adjust the addend for sign extension of the low 16 bits. */
2430 reloc_entry
->addend
+= 0x8000;
2431 return bfd_reloc_continue
;
2434 static bfd_reloc_status_type
2435 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2436 void *data
, asection
*input_section
,
2437 bfd
*output_bfd
, char **error_message
)
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2444 if (output_bfd
!= NULL
)
2445 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2446 input_section
, output_bfd
, error_message
);
2448 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2450 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2452 /* Subtract the TOC base address. */
2453 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2454 return bfd_reloc_continue
;
2457 static bfd_reloc_status_type
2458 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2459 void *data
, asection
*input_section
,
2460 bfd
*output_bfd
, char **error_message
)
2464 /* If this is a relocatable link (output_bfd test tells us), just
2465 call the generic function. Any adjustment will be done at final
2467 if (output_bfd
!= NULL
)
2468 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2469 input_section
, output_bfd
, error_message
);
2471 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2473 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2475 /* Subtract the TOC base address. */
2476 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2478 /* Adjust the addend for sign extension of the low 16 bits. */
2479 reloc_entry
->addend
+= 0x8000;
2480 return bfd_reloc_continue
;
2483 static bfd_reloc_status_type
2484 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2485 void *data
, asection
*input_section
,
2486 bfd
*output_bfd
, char **error_message
)
2489 bfd_size_type octets
;
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2494 if (output_bfd
!= NULL
)
2495 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2496 input_section
, output_bfd
, error_message
);
2498 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2500 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2502 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2503 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2504 return bfd_reloc_ok
;
2507 static bfd_reloc_status_type
2508 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2509 void *data
, asection
*input_section
,
2510 bfd
*output_bfd
, char **error_message
)
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd
!= NULL
)
2516 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2517 input_section
, output_bfd
, error_message
);
2519 if (error_message
!= NULL
)
2521 static char buf
[60];
2522 sprintf (buf
, "generic linker can't handle %s",
2523 reloc_entry
->howto
->name
);
2524 *error_message
= buf
;
2526 return bfd_reloc_dangerous
;
2529 /* Track GOT entries needed for a given symbol. We might need more
2530 than one got entry per symbol. */
2533 struct got_entry
*next
;
2535 /* The symbol addend that we'll be placing in the GOT. */
2538 /* Unlike other ELF targets, we use separate GOT entries for the same
2539 symbol referenced from different input files. This is to support
2540 automatic multiple TOC/GOT sections, where the TOC base can vary
2541 from one input file to another. After partitioning into TOC groups
2542 we merge entries within the group.
2544 Point to the BFD owning this GOT entry. */
2547 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2548 TLS_TPREL or TLS_DTPREL for tls entries. */
2549 unsigned char tls_type
;
2551 /* Non-zero if got.ent points to real entry. */
2552 unsigned char is_indirect
;
2554 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2557 bfd_signed_vma refcount
;
2559 struct got_entry
*ent
;
2563 /* The same for PLT. */
2566 struct plt_entry
*next
;
2572 bfd_signed_vma refcount
;
2577 struct ppc64_elf_obj_tdata
2579 struct elf_obj_tdata elf
;
2581 /* Shortcuts to dynamic linker sections. */
2585 /* Used during garbage collection. We attach global symbols defined
2586 on removed .opd entries to this section so that the sym is removed. */
2587 asection
*deleted_section
;
2589 /* TLS local dynamic got entry handling. Support for multiple GOT
2590 sections means we potentially need one of these for each input bfd. */
2591 struct got_entry tlsld_got
;
2593 /* A copy of relocs before they are modified for --emit-relocs. */
2594 Elf_Internal_Rela
*opd_relocs
;
2596 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2597 the reloc to be in the range -32768 to 32767. */
2598 unsigned int has_small_toc_reloc
;
2601 #define ppc64_elf_tdata(bfd) \
2602 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2604 #define ppc64_tlsld_got(bfd) \
2605 (&ppc64_elf_tdata (bfd)->tlsld_got)
2607 #define is_ppc64_elf(bfd) \
2608 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2609 && elf_object_id (bfd) == PPC64_ELF_DATA)
2611 /* Override the generic function because we store some extras. */
2614 ppc64_elf_mkobject (bfd
*abfd
)
2616 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2620 /* Fix bad default arch selected for a 64 bit input bfd when the
2621 default is 32 bit. */
2624 ppc64_elf_object_p (bfd
*abfd
)
2626 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2628 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2630 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2632 /* Relies on arch after 32 bit default being 64 bit default. */
2633 abfd
->arch_info
= abfd
->arch_info
->next
;
2634 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2640 /* Support for core dump NOTE sections. */
2643 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2645 size_t offset
, size
;
2647 if (note
->descsz
!= 504)
2651 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2654 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2660 /* Make a ".reg/999" section. */
2661 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2662 size
, note
->descpos
+ offset
);
2666 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2668 if (note
->descsz
!= 136)
2671 elf_tdata (abfd
)->core_program
2672 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2673 elf_tdata (abfd
)->core_command
2674 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2680 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2693 va_start (ap
, note_type
);
2694 memset (data
, 0, 40);
2695 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2696 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2698 return elfcore_write_note (abfd
, buf
, bufsiz
,
2699 "CORE", note_type
, data
, sizeof (data
));
2710 va_start (ap
, note_type
);
2711 memset (data
, 0, 112);
2712 pid
= va_arg (ap
, long);
2713 bfd_put_32 (abfd
, pid
, data
+ 32);
2714 cursig
= va_arg (ap
, int);
2715 bfd_put_16 (abfd
, cursig
, data
+ 12);
2716 greg
= va_arg (ap
, const void *);
2717 memcpy (data
+ 112, greg
, 384);
2718 memset (data
+ 496, 0, 8);
2720 return elfcore_write_note (abfd
, buf
, bufsiz
,
2721 "CORE", note_type
, data
, sizeof (data
));
2726 /* Merge backend specific data from an object file to the output
2727 object file when linking. */
2730 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2732 /* Check if we have the same endianess. */
2733 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2734 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2735 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2739 if (bfd_big_endian (ibfd
))
2740 msg
= _("%B: compiled for a big endian system "
2741 "and target is little endian");
2743 msg
= _("%B: compiled for a little endian system "
2744 "and target is big endian");
2746 (*_bfd_error_handler
) (msg
, ibfd
);
2748 bfd_set_error (bfd_error_wrong_format
);
2755 /* Add extra PPC sections. */
2757 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2759 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2760 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2761 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2762 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2763 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2764 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { NULL
, 0, 0, 0, 0 }
2768 enum _ppc64_sec_type
{
2774 struct _ppc64_elf_section_data
2776 struct bfd_elf_section_data elf
;
2780 /* An array with one entry for each opd function descriptor. */
2781 struct _opd_sec_data
2783 /* Points to the function code section for local opd entries. */
2784 asection
**func_sec
;
2786 /* After editing .opd, adjust references to opd local syms. */
2790 /* An array for toc sections, indexed by offset/8. */
2791 struct _toc_sec_data
2793 /* Specifies the relocation symbol index used at a given toc offset. */
2796 /* And the relocation addend. */
2801 enum _ppc64_sec_type sec_type
:2;
2803 /* Flag set when small branches are detected. Used to
2804 select suitable defaults for the stub group size. */
2805 unsigned int has_14bit_branch
:1;
2808 #define ppc64_elf_section_data(sec) \
2809 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2812 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2814 if (!sec
->used_by_bfd
)
2816 struct _ppc64_elf_section_data
*sdata
;
2817 bfd_size_type amt
= sizeof (*sdata
);
2819 sdata
= bfd_zalloc (abfd
, amt
);
2822 sec
->used_by_bfd
= sdata
;
2825 return _bfd_elf_new_section_hook (abfd
, sec
);
2828 static struct _opd_sec_data
*
2829 get_opd_info (asection
* sec
)
2832 && ppc64_elf_section_data (sec
) != NULL
2833 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2834 return &ppc64_elf_section_data (sec
)->u
.opd
;
2838 /* Parameters for the qsort hook. */
2839 static bfd_boolean synthetic_relocatable
;
2841 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2844 compare_symbols (const void *ap
, const void *bp
)
2846 const asymbol
*a
= * (const asymbol
**) ap
;
2847 const asymbol
*b
= * (const asymbol
**) bp
;
2849 /* Section symbols first. */
2850 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2852 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2855 /* then .opd symbols. */
2856 if (strcmp (a
->section
->name
, ".opd") == 0
2857 && strcmp (b
->section
->name
, ".opd") != 0)
2859 if (strcmp (a
->section
->name
, ".opd") != 0
2860 && strcmp (b
->section
->name
, ".opd") == 0)
2863 /* then other code symbols. */
2864 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2865 == (SEC_CODE
| SEC_ALLOC
)
2866 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2867 != (SEC_CODE
| SEC_ALLOC
))
2870 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2871 != (SEC_CODE
| SEC_ALLOC
)
2872 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2873 == (SEC_CODE
| SEC_ALLOC
))
2876 if (synthetic_relocatable
)
2878 if (a
->section
->id
< b
->section
->id
)
2881 if (a
->section
->id
> b
->section
->id
)
2885 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2888 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2891 /* For syms with the same value, prefer strong dynamic global function
2892 syms over other syms. */
2893 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2896 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2899 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2902 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2905 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2908 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2911 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2914 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2920 /* Search SYMS for a symbol of the given VALUE. */
2923 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2931 mid
= (lo
+ hi
) >> 1;
2932 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2934 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2944 mid
= (lo
+ hi
) >> 1;
2945 if (syms
[mid
]->section
->id
< id
)
2947 else if (syms
[mid
]->section
->id
> id
)
2949 else if (syms
[mid
]->value
< value
)
2951 else if (syms
[mid
]->value
> value
)
2961 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2963 bfd_vma vma
= *(bfd_vma
*) ptr
;
2964 return ((section
->flags
& SEC_ALLOC
) != 0
2965 && section
->vma
<= vma
2966 && vma
< section
->vma
+ section
->size
);
2969 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2970 entry syms. Also generate @plt symbols for the glink branch table. */
2973 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2974 long static_count
, asymbol
**static_syms
,
2975 long dyn_count
, asymbol
**dyn_syms
,
2982 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2984 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2989 opd
= bfd_get_section_by_name (abfd
, ".opd");
2993 symcount
= static_count
;
2995 symcount
+= dyn_count
;
2999 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3003 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3005 /* Use both symbol tables. */
3006 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3007 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3009 else if (!relocatable
&& static_count
== 0)
3010 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3012 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3014 synthetic_relocatable
= relocatable
;
3015 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3017 if (!relocatable
&& symcount
> 1)
3020 /* Trim duplicate syms, since we may have merged the normal and
3021 dynamic symbols. Actually, we only care about syms that have
3022 different values, so trim any with the same value. */
3023 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3024 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3025 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3026 syms
[j
++] = syms
[i
];
3031 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3035 for (; i
< symcount
; ++i
)
3036 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3037 != (SEC_CODE
| SEC_ALLOC
))
3038 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3042 for (; i
< symcount
; ++i
)
3043 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3047 for (; i
< symcount
; ++i
)
3048 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3052 for (; i
< symcount
; ++i
)
3053 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3054 != (SEC_CODE
| SEC_ALLOC
))
3062 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3067 if (opdsymend
== secsymend
)
3070 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3071 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3075 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3082 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3086 while (r
< opd
->relocation
+ relcount
3087 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3090 if (r
== opd
->relocation
+ relcount
)
3093 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3096 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3099 sym
= *r
->sym_ptr_ptr
;
3100 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3101 sym
->section
->id
, sym
->value
+ r
->addend
))
3104 size
+= sizeof (asymbol
);
3105 size
+= strlen (syms
[i
]->name
) + 2;
3109 s
= *ret
= bfd_malloc (size
);
3116 names
= (char *) (s
+ count
);
3118 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3122 while (r
< opd
->relocation
+ relcount
3123 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3126 if (r
== opd
->relocation
+ relcount
)
3129 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3132 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3135 sym
= *r
->sym_ptr_ptr
;
3136 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3137 sym
->section
->id
, sym
->value
+ r
->addend
))
3142 s
->flags
|= BSF_SYNTHETIC
;
3143 s
->section
= sym
->section
;
3144 s
->value
= sym
->value
+ r
->addend
;
3147 len
= strlen (syms
[i
]->name
);
3148 memcpy (names
, syms
[i
]->name
, len
+ 1);
3150 /* Have udata.p point back to the original symbol this
3151 synthetic symbol was derived from. */
3152 s
->udata
.p
= syms
[i
];
3159 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3163 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3164 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3167 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3171 free_contents_and_exit
:
3179 for (i
= secsymend
; i
< opdsymend
; ++i
)
3183 /* Ignore bogus symbols. */
3184 if (syms
[i
]->value
> opd
->size
- 8)
3187 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3188 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3191 size
+= sizeof (asymbol
);
3192 size
+= strlen (syms
[i
]->name
) + 2;
3196 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3198 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3200 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3202 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3204 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3205 goto free_contents_and_exit
;
3207 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3208 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3211 extdynend
= extdyn
+ dynamic
->size
;
3212 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3214 Elf_Internal_Dyn dyn
;
3215 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3217 if (dyn
.d_tag
== DT_NULL
)
3220 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3222 /* The first glink stub starts at offset 32; see comment in
3223 ppc64_elf_finish_dynamic_sections. */
3224 glink_vma
= dyn
.d_un
.d_val
+ 32;
3225 /* The .glink section usually does not survive the final
3226 link; search for the section (usually .text) where the
3227 glink stubs now reside. */
3228 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3239 /* Determine __glink trampoline by reading the relative branch
3240 from the first glink stub. */
3242 if (bfd_get_section_contents (abfd
, glink
, buf
,
3243 glink_vma
+ 4 - glink
->vma
, 4))
3245 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3247 if ((insn
& ~0x3fffffc) == 0)
3248 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3252 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3254 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3257 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3258 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3259 goto free_contents_and_exit
;
3261 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3262 size
+= plt_count
* sizeof (asymbol
);
3264 p
= relplt
->relocation
;
3265 for (i
= 0; i
< plt_count
; i
++, p
++)
3267 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3269 size
+= sizeof ("+0x") - 1 + 16;
3274 s
= *ret
= bfd_malloc (size
);
3276 goto free_contents_and_exit
;
3278 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3280 for (i
= secsymend
; i
< opdsymend
; ++i
)
3284 if (syms
[i
]->value
> opd
->size
- 8)
3287 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3288 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3292 asection
*sec
= abfd
->sections
;
3299 long mid
= (lo
+ hi
) >> 1;
3300 if (syms
[mid
]->section
->vma
< ent
)
3302 else if (syms
[mid
]->section
->vma
> ent
)
3306 sec
= syms
[mid
]->section
;
3311 if (lo
>= hi
&& lo
> codesecsym
)
3312 sec
= syms
[lo
- 1]->section
;
3314 for (; sec
!= NULL
; sec
= sec
->next
)
3318 if ((sec
->flags
& SEC_ALLOC
) == 0
3319 || (sec
->flags
& SEC_LOAD
) == 0)
3321 if ((sec
->flags
& SEC_CODE
) != 0)
3324 s
->flags
|= BSF_SYNTHETIC
;
3325 s
->value
= ent
- s
->section
->vma
;
3328 len
= strlen (syms
[i
]->name
);
3329 memcpy (names
, syms
[i
]->name
, len
+ 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s
->udata
.p
= syms
[i
];
3339 if (glink
!= NULL
&& relplt
!= NULL
)
3343 /* Add a symbol for the main glink trampoline. */
3344 memset (s
, 0, sizeof *s
);
3346 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3348 s
->value
= resolv_vma
- glink
->vma
;
3350 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3351 names
+= sizeof ("__glink_PLTresolve");
3356 /* FIXME: It would be very much nicer to put sym@plt on the
3357 stub rather than on the glink branch table entry. The
3358 objdump disassembler would then use a sensible symbol
3359 name on plt calls. The difficulty in doing so is
3360 a) finding the stubs, and,
3361 b) matching stubs against plt entries, and,
3362 c) there can be multiple stubs for a given plt entry.
3364 Solving (a) could be done by code scanning, but older
3365 ppc64 binaries used different stubs to current code.
3366 (b) is the tricky one since you need to known the toc
3367 pointer for at least one function that uses a pic stub to
3368 be able to calculate the plt address referenced.
3369 (c) means gdb would need to set multiple breakpoints (or
3370 find the glink branch itself) when setting breakpoints
3371 for pending shared library loads. */
3372 p
= relplt
->relocation
;
3373 for (i
= 0; i
< plt_count
; i
++, p
++)
3377 *s
= **p
->sym_ptr_ptr
;
3378 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3379 we are defining a symbol, ensure one of them is set. */
3380 if ((s
->flags
& BSF_LOCAL
) == 0)
3381 s
->flags
|= BSF_GLOBAL
;
3382 s
->flags
|= BSF_SYNTHETIC
;
3384 s
->value
= glink_vma
- glink
->vma
;
3387 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3388 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3392 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3393 names
+= sizeof ("+0x") - 1;
3394 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3395 names
+= strlen (names
);
3397 memcpy (names
, "@plt", sizeof ("@plt"));
3398 names
+= sizeof ("@plt");
3413 /* The following functions are specific to the ELF linker, while
3414 functions above are used generally. Those named ppc64_elf_* are
3415 called by the main ELF linker code. They appear in this file more
3416 or less in the order in which they are called. eg.
3417 ppc64_elf_check_relocs is called early in the link process,
3418 ppc64_elf_finish_dynamic_sections is one of the last functions
3421 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3422 functions have both a function code symbol and a function descriptor
3423 symbol. A call to foo in a relocatable object file looks like:
3430 The function definition in another object file might be:
3434 . .quad .TOC.@tocbase
3440 When the linker resolves the call during a static link, the branch
3441 unsurprisingly just goes to .foo and the .opd information is unused.
3442 If the function definition is in a shared library, things are a little
3443 different: The call goes via a plt call stub, the opd information gets
3444 copied to the plt, and the linker patches the nop.
3452 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3453 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3454 . std 2,40(1) # this is the general idea
3462 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3464 The "reloc ()" notation is supposed to indicate that the linker emits
3465 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3468 What are the difficulties here? Well, firstly, the relocations
3469 examined by the linker in check_relocs are against the function code
3470 sym .foo, while the dynamic relocation in the plt is emitted against
3471 the function descriptor symbol, foo. Somewhere along the line, we need
3472 to carefully copy dynamic link information from one symbol to the other.
3473 Secondly, the generic part of the elf linker will make .foo a dynamic
3474 symbol as is normal for most other backends. We need foo dynamic
3475 instead, at least for an application final link. However, when
3476 creating a shared library containing foo, we need to have both symbols
3477 dynamic so that references to .foo are satisfied during the early
3478 stages of linking. Otherwise the linker might decide to pull in a
3479 definition from some other object, eg. a static library.
3481 Update: As of August 2004, we support a new convention. Function
3482 calls may use the function descriptor symbol, ie. "bl foo". This
3483 behaves exactly as "bl .foo". */
3485 /* The linker needs to keep track of the number of relocs that it
3486 decides to copy as dynamic relocs in check_relocs for each symbol.
3487 This is so that it can later discard them if they are found to be
3488 unnecessary. We store the information in a field extending the
3489 regular ELF linker hash table. */
3491 struct ppc_dyn_relocs
3493 struct ppc_dyn_relocs
*next
;
3495 /* The input section of the reloc. */
3498 /* Total number of relocs copied for the input section. */
3499 bfd_size_type count
;
3501 /* Number of pc-relative relocs copied for the input section. */
3502 bfd_size_type pc_count
;
3505 /* Of those relocs that might be copied as dynamic relocs, this function
3506 selects those that must be copied when linking a shared library,
3507 even when the symbol is local. */
3510 must_be_dyn_reloc (struct bfd_link_info
*info
,
3511 enum elf_ppc64_reloc_type r_type
)
3523 case R_PPC64_TPREL16
:
3524 case R_PPC64_TPREL16_LO
:
3525 case R_PPC64_TPREL16_HI
:
3526 case R_PPC64_TPREL16_HA
:
3527 case R_PPC64_TPREL16_DS
:
3528 case R_PPC64_TPREL16_LO_DS
:
3529 case R_PPC64_TPREL16_HIGHER
:
3530 case R_PPC64_TPREL16_HIGHERA
:
3531 case R_PPC64_TPREL16_HIGHEST
:
3532 case R_PPC64_TPREL16_HIGHESTA
:
3533 case R_PPC64_TPREL64
:
3534 return !info
->executable
;
3538 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3539 copying dynamic variables from a shared lib into an app's dynbss
3540 section, and instead use a dynamic relocation to point into the
3541 shared lib. With code that gcc generates, it's vital that this be
3542 enabled; In the PowerPC64 ABI, the address of a function is actually
3543 the address of a function descriptor, which resides in the .opd
3544 section. gcc uses the descriptor directly rather than going via the
3545 GOT as some other ABI's do, which means that initialized function
3546 pointers must reference the descriptor. Thus, a function pointer
3547 initialized to the address of a function in a shared library will
3548 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3549 redefines the function descriptor symbol to point to the copy. This
3550 presents a problem as a plt entry for that function is also
3551 initialized from the function descriptor symbol and the copy reloc
3552 may not be initialized first. */
3553 #define ELIMINATE_COPY_RELOCS 1
3555 /* Section name for stubs is the associated section name plus this
3557 #define STUB_SUFFIX ".stub"
3560 ppc_stub_long_branch:
3561 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3562 destination, but a 24 bit branch in a stub section will reach.
3565 ppc_stub_plt_branch:
3566 Similar to the above, but a 24 bit branch in the stub section won't
3567 reach its destination.
3568 . addis %r12,%r2,xxx@toc@ha
3569 . ld %r11,xxx@toc@l(%r12)
3574 Used to call a function in a shared library. If it so happens that
3575 the plt entry referenced crosses a 64k boundary, then an extra
3576 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3577 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx+0@toc@l(%r12)
3581 . ld %r2,xxx+8@toc@l(%r12)
3582 . ld %r11,xxx+16@toc@l(%r12)
3585 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3586 code to adjust the value and save r2 to support multiple toc sections.
3587 A ppc_stub_long_branch with an r2 offset looks like:
3589 . addis %r2,%r2,off@ha
3590 . addi %r2,%r2,off@l
3593 A ppc_stub_plt_branch with an r2 offset looks like:
3595 . addis %r12,%r2,xxx@toc@ha
3596 . ld %r11,xxx@toc@l(%r12)
3597 . addis %r2,%r2,off@ha
3598 . addi %r2,%r2,off@l
3602 In cases where the "addis" instruction would add zero, the "addis" is
3603 omitted and following instructions modified slightly in some cases.
3606 enum ppc_stub_type
{
3608 ppc_stub_long_branch
,
3609 ppc_stub_long_branch_r2off
,
3610 ppc_stub_plt_branch
,
3611 ppc_stub_plt_branch_r2off
,
3615 struct ppc_stub_hash_entry
{
3617 /* Base hash table entry structure. */
3618 struct bfd_hash_entry root
;
3620 enum ppc_stub_type stub_type
;
3622 /* The stub section. */
3625 /* Offset within stub_sec of the beginning of this stub. */
3626 bfd_vma stub_offset
;
3628 /* Given the symbol's value and its section we can determine its final
3629 value when building the stubs (so the stub knows where to jump. */
3630 bfd_vma target_value
;
3631 asection
*target_section
;
3633 /* The symbol table entry, if any, that this was derived from. */
3634 struct ppc_link_hash_entry
*h
;
3635 struct plt_entry
*plt_ent
;
3637 /* And the reloc addend that this was derived from. */
3640 /* Where this stub is being called from, or, in the case of combined
3641 stub sections, the first input section in the group. */
3645 struct ppc_branch_hash_entry
{
3647 /* Base hash table entry structure. */
3648 struct bfd_hash_entry root
;
3650 /* Offset within branch lookup table. */
3651 unsigned int offset
;
3653 /* Generation marker. */
3657 struct ppc_link_hash_entry
3659 struct elf_link_hash_entry elf
;
3662 /* A pointer to the most recently used stub hash entry against this
3664 struct ppc_stub_hash_entry
*stub_cache
;
3666 /* A pointer to the next symbol starting with a '.' */
3667 struct ppc_link_hash_entry
*next_dot_sym
;
3670 /* Track dynamic relocs copied for this symbol. */
3671 struct ppc_dyn_relocs
*dyn_relocs
;
3673 /* Link between function code and descriptor symbols. */
3674 struct ppc_link_hash_entry
*oh
;
3676 /* Flag function code and descriptor symbols. */
3677 unsigned int is_func
:1;
3678 unsigned int is_func_descriptor
:1;
3679 unsigned int fake
:1;
3681 /* Whether global opd/toc sym has been adjusted or not.
3682 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3683 should be set for all globals defined in any opd/toc section. */
3684 unsigned int adjust_done
:1;
3686 /* Set if we twiddled this symbol to weak at some stage. */
3687 unsigned int was_undefined
:1;
3689 /* Contexts in which symbol is used in the GOT (or TOC).
3690 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3691 corresponding relocs are encountered during check_relocs.
3692 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3693 indicate the corresponding GOT entry type is not needed.
3694 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3695 a TPREL one. We use a separate flag rather than setting TPREL
3696 just for convenience in distinguishing the two cases. */
3697 #define TLS_GD 1 /* GD reloc. */
3698 #define TLS_LD 2 /* LD reloc. */
3699 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3700 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3701 #define TLS_TLS 16 /* Any TLS reloc. */
3702 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3703 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3704 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3705 unsigned char tls_mask
;
3708 /* ppc64 ELF linker hash table. */
3710 struct ppc_link_hash_table
3712 struct elf_link_hash_table elf
;
3714 /* The stub hash table. */
3715 struct bfd_hash_table stub_hash_table
;
3717 /* Another hash table for plt_branch stubs. */
3718 struct bfd_hash_table branch_hash_table
;
3720 /* Linker stub bfd. */
3723 /* Linker call-backs. */
3724 asection
* (*add_stub_section
) (const char *, asection
*);
3725 void (*layout_sections_again
) (void);
3727 /* Array to keep track of which stub sections have been created, and
3728 information on stub grouping. */
3730 /* This is the section to which stubs in the group will be attached. */
3732 /* The stub section. */
3734 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3738 /* Temp used when calculating TOC pointers. */
3741 asection
*toc_first_sec
;
3743 /* Highest input section id. */
3746 /* Highest output section index. */
3749 /* Used when adding symbols. */
3750 struct ppc_link_hash_entry
*dot_syms
;
3752 /* List of input sections for each output section. */
3753 asection
**input_list
;
3755 /* Short-cuts to get to dynamic linker sections. */
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
];
3778 /* Number of stubs against global syms. */
3779 unsigned long stub_globals
;
3781 /* Set if we should emit symbols for stubs. */
3782 unsigned int emit_stub_syms
:1;
3784 /* Set if __tls_get_addr optimization should not be done. */
3785 unsigned int no_tls_get_addr_opt
:1;
3787 /* Support for multiple toc sections. */
3788 unsigned int do_multi_toc
:1;
3789 unsigned int multi_toc_needed
:1;
3790 unsigned int second_toc_pass
:1;
3791 unsigned int do_toc_opt
:1;
3794 unsigned int stub_error
:1;
3796 /* Temp used by ppc64_elf_process_dot_syms. */
3797 unsigned int twiddled_syms
:1;
3799 /* Incremented every time we size stubs. */
3800 unsigned int stub_iteration
;
3802 /* Small local sym cache. */
3803 struct sym_cache sym_cache
;
3806 /* Rename some of the generic section flags to better document how they
3809 /* Nonzero if this section has TLS related relocations. */
3810 #define has_tls_reloc sec_flg0
3812 /* Nonzero if this section has a call to __tls_get_addr. */
3813 #define has_tls_get_addr_call sec_flg1
3815 /* Nonzero if this section has any toc or got relocs. */
3816 #define has_toc_reloc sec_flg2
3818 /* Nonzero if this section has a call to another section that uses
3820 #define makes_toc_func_call sec_flg3
3822 /* Recursion protection when determining above flag. */
3823 #define call_check_in_progress sec_flg4
3824 #define call_check_done sec_flg5
3826 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3828 #define ppc_hash_table(p) \
3829 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3830 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3832 #define ppc_stub_hash_lookup(table, string, create, copy) \
3833 ((struct ppc_stub_hash_entry *) \
3834 bfd_hash_lookup ((table), (string), (create), (copy)))
3836 #define ppc_branch_hash_lookup(table, string, create, copy) \
3837 ((struct ppc_branch_hash_entry *) \
3838 bfd_hash_lookup ((table), (string), (create), (copy)))
3840 /* Create an entry in the stub hash table. */
3842 static struct bfd_hash_entry
*
3843 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3844 struct bfd_hash_table
*table
,
3847 /* Allocate the structure if it has not already been allocated by a
3851 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3856 /* Call the allocation method of the superclass. */
3857 entry
= bfd_hash_newfunc (entry
, table
, string
);
3860 struct ppc_stub_hash_entry
*eh
;
3862 /* Initialize the local fields. */
3863 eh
= (struct ppc_stub_hash_entry
*) entry
;
3864 eh
->stub_type
= ppc_stub_none
;
3865 eh
->stub_sec
= NULL
;
3866 eh
->stub_offset
= 0;
3867 eh
->target_value
= 0;
3868 eh
->target_section
= NULL
;
3876 /* Create an entry in the branch hash table. */
3878 static struct bfd_hash_entry
*
3879 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3880 struct bfd_hash_table
*table
,
3883 /* Allocate the structure if it has not already been allocated by a
3887 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3892 /* Call the allocation method of the superclass. */
3893 entry
= bfd_hash_newfunc (entry
, table
, string
);
3896 struct ppc_branch_hash_entry
*eh
;
3898 /* Initialize the local fields. */
3899 eh
= (struct ppc_branch_hash_entry
*) entry
;
3907 /* Create an entry in a ppc64 ELF linker hash table. */
3909 static struct bfd_hash_entry
*
3910 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3911 struct bfd_hash_table
*table
,
3914 /* Allocate the structure if it has not already been allocated by a
3918 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3923 /* Call the allocation method of the superclass. */
3924 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3927 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3929 memset (&eh
->u
.stub_cache
, 0,
3930 (sizeof (struct ppc_link_hash_entry
)
3931 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3933 /* When making function calls, old ABI code references function entry
3934 points (dot symbols), while new ABI code references the function
3935 descriptor symbol. We need to make any combination of reference and
3936 definition work together, without breaking archive linking.
3938 For a defined function "foo" and an undefined call to "bar":
3939 An old object defines "foo" and ".foo", references ".bar" (possibly
3941 A new object defines "foo" and references "bar".
3943 A new object thus has no problem with its undefined symbols being
3944 satisfied by definitions in an old object. On the other hand, the
3945 old object won't have ".bar" satisfied by a new object.
3947 Keep a list of newly added dot-symbols. */
3949 if (string
[0] == '.')
3951 struct ppc_link_hash_table
*htab
;
3953 htab
= (struct ppc_link_hash_table
*) table
;
3954 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3955 htab
->dot_syms
= eh
;
3962 /* Create a ppc64 ELF linker hash table. */
3964 static struct bfd_link_hash_table
*
3965 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3967 struct ppc_link_hash_table
*htab
;
3968 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3970 htab
= bfd_zmalloc (amt
);
3974 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3975 sizeof (struct ppc_link_hash_entry
),
3982 /* Init the stub hash table too. */
3983 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3984 sizeof (struct ppc_stub_hash_entry
)))
3987 /* And the branch hash table. */
3988 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3989 sizeof (struct ppc_branch_hash_entry
)))
3992 /* Initializing two fields of the union is just cosmetic. We really
3993 only care about glist, but when compiled on a 32-bit host the
3994 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3995 debugger inspection of these fields look nicer. */
3996 htab
->elf
.init_got_refcount
.refcount
= 0;
3997 htab
->elf
.init_got_refcount
.glist
= NULL
;
3998 htab
->elf
.init_plt_refcount
.refcount
= 0;
3999 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4000 htab
->elf
.init_got_offset
.offset
= 0;
4001 htab
->elf
.init_got_offset
.glist
= NULL
;
4002 htab
->elf
.init_plt_offset
.offset
= 0;
4003 htab
->elf
.init_plt_offset
.glist
= NULL
;
4005 return &htab
->elf
.root
;
4008 /* Free the derived linker hash table. */
4011 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4013 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
4015 bfd_hash_table_free (&ret
->stub_hash_table
);
4016 bfd_hash_table_free (&ret
->branch_hash_table
);
4017 _bfd_generic_link_hash_table_free (hash
);
4020 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4023 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4025 struct ppc_link_hash_table
*htab
;
4027 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4029 /* Always hook our dynamic sections into the first bfd, which is the
4030 linker created stub bfd. This ensures that the GOT header is at
4031 the start of the output TOC section. */
4032 htab
= ppc_hash_table (info
);
4035 htab
->stub_bfd
= abfd
;
4036 htab
->elf
.dynobj
= abfd
;
4039 /* Build a name for an entry in the stub hash table. */
4042 ppc_stub_name (const asection
*input_section
,
4043 const asection
*sym_sec
,
4044 const struct ppc_link_hash_entry
*h
,
4045 const Elf_Internal_Rela
*rel
)
4050 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4051 offsets from a sym as a branch target? In fact, we could
4052 probably assume the addend is always zero. */
4053 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4057 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4058 stub_name
= bfd_malloc (len
);
4059 if (stub_name
== NULL
)
4062 sprintf (stub_name
, "%08x.%s+%x",
4063 input_section
->id
& 0xffffffff,
4064 h
->elf
.root
.root
.string
,
4065 (int) rel
->r_addend
& 0xffffffff);
4069 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4070 stub_name
= bfd_malloc (len
);
4071 if (stub_name
== NULL
)
4074 sprintf (stub_name
, "%08x.%x:%x+%x",
4075 input_section
->id
& 0xffffffff,
4076 sym_sec
->id
& 0xffffffff,
4077 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4078 (int) rel
->r_addend
& 0xffffffff);
4080 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4081 stub_name
[len
- 2] = 0;
4085 /* Look up an entry in the stub hash. Stub entries are cached because
4086 creating the stub name takes a bit of time. */
4088 static struct ppc_stub_hash_entry
*
4089 ppc_get_stub_entry (const asection
*input_section
,
4090 const asection
*sym_sec
,
4091 struct ppc_link_hash_entry
*h
,
4092 const Elf_Internal_Rela
*rel
,
4093 struct ppc_link_hash_table
*htab
)
4095 struct ppc_stub_hash_entry
*stub_entry
;
4096 const asection
*id_sec
;
4098 /* If this input section is part of a group of sections sharing one
4099 stub section, then use the id of the first section in the group.
4100 Stub names need to include a section id, as there may well be
4101 more than one stub used to reach say, printf, and we need to
4102 distinguish between them. */
4103 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4105 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4106 && h
->u
.stub_cache
->h
== h
4107 && h
->u
.stub_cache
->id_sec
== id_sec
)
4109 stub_entry
= h
->u
.stub_cache
;
4115 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4116 if (stub_name
== NULL
)
4119 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4120 stub_name
, FALSE
, FALSE
);
4122 h
->u
.stub_cache
= stub_entry
;
4130 /* Add a new stub entry to the stub hash. Not all fields of the new
4131 stub entry are initialised. */
4133 static struct ppc_stub_hash_entry
*
4134 ppc_add_stub (const char *stub_name
,
4136 struct ppc_link_hash_table
*htab
)
4140 struct ppc_stub_hash_entry
*stub_entry
;
4142 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4143 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4144 if (stub_sec
== NULL
)
4146 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4147 if (stub_sec
== NULL
)
4153 namelen
= strlen (link_sec
->name
);
4154 len
= namelen
+ sizeof (STUB_SUFFIX
);
4155 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4159 memcpy (s_name
, link_sec
->name
, namelen
);
4160 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4161 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4162 if (stub_sec
== NULL
)
4164 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4166 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4169 /* Enter this entry into the linker stub hash table. */
4170 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4172 if (stub_entry
== NULL
)
4174 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4175 section
->owner
, stub_name
);
4179 stub_entry
->stub_sec
= stub_sec
;
4180 stub_entry
->stub_offset
= 0;
4181 stub_entry
->id_sec
= link_sec
;
4185 /* Create sections for linker generated code. */
4188 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4190 struct ppc_link_hash_table
*htab
;
4193 htab
= ppc_hash_table (info
);
4197 /* Create .sfpr for code to save and restore fp regs. */
4198 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4199 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4200 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4202 if (htab
->sfpr
== NULL
4203 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4206 /* Create .glink for lazy dynamic linking support. */
4207 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4209 if (htab
->glink
== NULL
4210 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4213 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4214 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4215 if (htab
->iplt
== NULL
4216 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4219 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4220 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4221 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4224 if (htab
->reliplt
== NULL
4225 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4228 /* Create branch lookup table for plt_branch stubs. */
4229 flags
= (SEC_ALLOC
| SEC_LOAD
4230 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4231 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4233 if (htab
->brlt
== NULL
4234 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4240 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4241 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4242 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4245 if (htab
->relbrlt
== NULL
4246 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4252 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4253 not already done. */
4256 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4258 asection
*got
, *relgot
;
4260 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4262 if (!is_ppc64_elf (abfd
))
4269 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4272 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4277 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4278 | SEC_LINKER_CREATED
);
4280 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4282 || !bfd_set_section_alignment (abfd
, got
, 3))
4285 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4286 flags
| SEC_READONLY
);
4288 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4291 ppc64_elf_tdata (abfd
)->got
= got
;
4292 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4296 /* Create the dynamic sections, and set up shortcuts. */
4299 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4301 struct ppc_link_hash_table
*htab
;
4303 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4306 htab
= ppc_hash_table (info
);
4311 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4312 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4313 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4314 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4316 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4318 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4319 || (!info
->shared
&& !htab
->relbss
))
4325 /* Follow indirect and warning symbol links. */
4327 static inline struct bfd_link_hash_entry
*
4328 follow_link (struct bfd_link_hash_entry
*h
)
4330 while (h
->type
== bfd_link_hash_indirect
4331 || h
->type
== bfd_link_hash_warning
)
4336 static inline struct elf_link_hash_entry
*
4337 elf_follow_link (struct elf_link_hash_entry
*h
)
4339 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4342 static inline struct ppc_link_hash_entry
*
4343 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4345 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4348 /* Merge PLT info on FROM with that on TO. */
4351 move_plt_plist (struct ppc_link_hash_entry
*from
,
4352 struct ppc_link_hash_entry
*to
)
4354 if (from
->elf
.plt
.plist
!= NULL
)
4356 if (to
->elf
.plt
.plist
!= NULL
)
4358 struct plt_entry
**entp
;
4359 struct plt_entry
*ent
;
4361 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4363 struct plt_entry
*dent
;
4365 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4366 if (dent
->addend
== ent
->addend
)
4368 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4375 *entp
= to
->elf
.plt
.plist
;
4378 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4379 from
->elf
.plt
.plist
= NULL
;
4383 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4386 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4387 struct elf_link_hash_entry
*dir
,
4388 struct elf_link_hash_entry
*ind
)
4390 struct ppc_link_hash_entry
*edir
, *eind
;
4392 edir
= (struct ppc_link_hash_entry
*) dir
;
4393 eind
= (struct ppc_link_hash_entry
*) ind
;
4395 /* Copy over any dynamic relocs we may have on the indirect sym. */
4396 if (eind
->dyn_relocs
!= NULL
)
4398 if (edir
->dyn_relocs
!= NULL
)
4400 struct ppc_dyn_relocs
**pp
;
4401 struct ppc_dyn_relocs
*p
;
4403 /* Add reloc counts against the indirect sym to the direct sym
4404 list. Merge any entries against the same section. */
4405 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4407 struct ppc_dyn_relocs
*q
;
4409 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4410 if (q
->sec
== p
->sec
)
4412 q
->pc_count
+= p
->pc_count
;
4413 q
->count
+= p
->count
;
4420 *pp
= edir
->dyn_relocs
;
4423 edir
->dyn_relocs
= eind
->dyn_relocs
;
4424 eind
->dyn_relocs
= NULL
;
4427 edir
->is_func
|= eind
->is_func
;
4428 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4429 edir
->tls_mask
|= eind
->tls_mask
;
4430 if (eind
->oh
!= NULL
)
4431 edir
->oh
= ppc_follow_link (eind
->oh
);
4433 /* If called to transfer flags for a weakdef during processing
4434 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4435 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4436 if (!(ELIMINATE_COPY_RELOCS
4437 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4438 && edir
->elf
.dynamic_adjusted
))
4439 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4441 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4442 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4443 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4444 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4446 /* If we were called to copy over info for a weak sym, that's all. */
4447 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4450 /* Copy over got entries that we may have already seen to the
4451 symbol which just became indirect. */
4452 if (eind
->elf
.got
.glist
!= NULL
)
4454 if (edir
->elf
.got
.glist
!= NULL
)
4456 struct got_entry
**entp
;
4457 struct got_entry
*ent
;
4459 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4461 struct got_entry
*dent
;
4463 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4464 if (dent
->addend
== ent
->addend
4465 && dent
->owner
== ent
->owner
4466 && dent
->tls_type
== ent
->tls_type
)
4468 dent
->got
.refcount
+= ent
->got
.refcount
;
4475 *entp
= edir
->elf
.got
.glist
;
4478 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4479 eind
->elf
.got
.glist
= NULL
;
4482 /* And plt entries. */
4483 move_plt_plist (eind
, edir
);
4485 if (eind
->elf
.dynindx
!= -1)
4487 if (edir
->elf
.dynindx
!= -1)
4488 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4489 edir
->elf
.dynstr_index
);
4490 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4491 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4492 eind
->elf
.dynindx
= -1;
4493 eind
->elf
.dynstr_index
= 0;
4497 /* Find the function descriptor hash entry from the given function code
4498 hash entry FH. Link the entries via their OH fields. */
4500 static struct ppc_link_hash_entry
*
4501 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4503 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4507 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4509 fdh
= (struct ppc_link_hash_entry
*)
4510 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4514 fdh
->is_func_descriptor
= 1;
4520 return ppc_follow_link (fdh
);
4523 /* Make a fake function descriptor sym for the code sym FH. */
4525 static struct ppc_link_hash_entry
*
4526 make_fdh (struct bfd_link_info
*info
,
4527 struct ppc_link_hash_entry
*fh
)
4531 struct bfd_link_hash_entry
*bh
;
4532 struct ppc_link_hash_entry
*fdh
;
4534 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4535 newsym
= bfd_make_empty_symbol (abfd
);
4536 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4537 newsym
->section
= bfd_und_section_ptr
;
4539 newsym
->flags
= BSF_WEAK
;
4542 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4543 newsym
->flags
, newsym
->section
,
4544 newsym
->value
, NULL
, FALSE
, FALSE
,
4548 fdh
= (struct ppc_link_hash_entry
*) bh
;
4549 fdh
->elf
.non_elf
= 0;
4551 fdh
->is_func_descriptor
= 1;
4558 /* Fix function descriptor symbols defined in .opd sections to be
4562 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4563 struct bfd_link_info
*info
,
4564 Elf_Internal_Sym
*isym
,
4565 const char **name ATTRIBUTE_UNUSED
,
4566 flagword
*flags ATTRIBUTE_UNUSED
,
4568 bfd_vma
*value ATTRIBUTE_UNUSED
)
4570 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4572 if ((ibfd
->flags
& DYNAMIC
) == 0)
4573 elf_tdata (info
->output_bfd
)->has_ifunc_symbols
= TRUE
;
4575 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4577 else if (*sec
!= NULL
4578 && strcmp ((*sec
)->name
, ".opd") == 0)
4579 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4584 /* This function makes an old ABI object reference to ".bar" cause the
4585 inclusion of a new ABI object archive that defines "bar".
4586 NAME is a symbol defined in an archive. Return a symbol in the hash
4587 table that might be satisfied by the archive symbols. */
4589 static struct elf_link_hash_entry
*
4590 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4591 struct bfd_link_info
*info
,
4594 struct elf_link_hash_entry
*h
;
4598 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4600 /* Don't return this sym if it is a fake function descriptor
4601 created by add_symbol_adjust. */
4602 && !(h
->root
.type
== bfd_link_hash_undefweak
4603 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4609 len
= strlen (name
);
4610 dot_name
= bfd_alloc (abfd
, len
+ 2);
4611 if (dot_name
== NULL
)
4612 return (struct elf_link_hash_entry
*) 0 - 1;
4614 memcpy (dot_name
+ 1, name
, len
+ 1);
4615 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4616 bfd_release (abfd
, dot_name
);
4620 /* This function satisfies all old ABI object references to ".bar" if a
4621 new ABI object defines "bar". Well, at least, undefined dot symbols
4622 are made weak. This stops later archive searches from including an
4623 object if we already have a function descriptor definition. It also
4624 prevents the linker complaining about undefined symbols.
4625 We also check and correct mismatched symbol visibility here. The
4626 most restrictive visibility of the function descriptor and the
4627 function entry symbol is used. */
4630 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4632 struct ppc_link_hash_table
*htab
;
4633 struct ppc_link_hash_entry
*fdh
;
4635 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4638 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4639 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4641 if (eh
->elf
.root
.root
.string
[0] != '.')
4644 htab
= ppc_hash_table (info
);
4648 fdh
= lookup_fdh (eh
, htab
);
4651 if (!info
->relocatable
4652 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4653 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4654 && eh
->elf
.ref_regular
)
4656 /* Make an undefweak function descriptor sym, which is enough to
4657 pull in an --as-needed shared lib, but won't cause link
4658 errors. Archives are handled elsewhere. */
4659 fdh
= make_fdh (info
, eh
);
4662 fdh
->elf
.ref_regular
= 1;
4667 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4668 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4669 if (entry_vis
< descr_vis
)
4670 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4671 else if (entry_vis
> descr_vis
)
4672 eh
->elf
.other
+= descr_vis
- entry_vis
;
4674 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4675 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4676 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4678 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4679 eh
->was_undefined
= 1;
4680 htab
->twiddled_syms
= 1;
4687 /* Process list of dot-symbols we made in link_hash_newfunc. */
4690 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4692 struct ppc_link_hash_table
*htab
;
4693 struct ppc_link_hash_entry
**p
, *eh
;
4695 if (!is_ppc64_elf (info
->output_bfd
))
4697 htab
= ppc_hash_table (info
);
4701 if (is_ppc64_elf (ibfd
))
4703 p
= &htab
->dot_syms
;
4704 while ((eh
= *p
) != NULL
)
4707 if (!add_symbol_adjust (eh
, info
))
4709 p
= &eh
->u
.next_dot_sym
;
4713 /* Clear the list for non-ppc64 input files. */
4714 p
= &htab
->dot_syms
;
4715 while ((eh
= *p
) != NULL
)
4718 p
= &eh
->u
.next_dot_sym
;
4721 /* We need to fix the undefs list for any syms we have twiddled to
4723 if (htab
->twiddled_syms
)
4725 bfd_link_repair_undef_list (&htab
->elf
.root
);
4726 htab
->twiddled_syms
= 0;
4731 /* Undo hash table changes when an --as-needed input file is determined
4732 not to be needed. */
4735 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4736 struct bfd_link_info
*info
)
4738 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4743 htab
->dot_syms
= NULL
;
4747 static struct plt_entry
**
4748 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4749 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4751 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4752 struct plt_entry
**local_plt
;
4753 unsigned char *local_got_tls_masks
;
4755 if (local_got_ents
== NULL
)
4757 bfd_size_type size
= symtab_hdr
->sh_info
;
4759 size
*= (sizeof (*local_got_ents
)
4760 + sizeof (*local_plt
)
4761 + sizeof (*local_got_tls_masks
));
4762 local_got_ents
= bfd_zalloc (abfd
, size
);
4763 if (local_got_ents
== NULL
)
4765 elf_local_got_ents (abfd
) = local_got_ents
;
4768 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4770 struct got_entry
*ent
;
4772 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4773 if (ent
->addend
== r_addend
4774 && ent
->owner
== abfd
4775 && ent
->tls_type
== tls_type
)
4779 bfd_size_type amt
= sizeof (*ent
);
4780 ent
= bfd_alloc (abfd
, amt
);
4783 ent
->next
= local_got_ents
[r_symndx
];
4784 ent
->addend
= r_addend
;
4786 ent
->tls_type
= tls_type
;
4787 ent
->is_indirect
= FALSE
;
4788 ent
->got
.refcount
= 0;
4789 local_got_ents
[r_symndx
] = ent
;
4791 ent
->got
.refcount
+= 1;
4794 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4795 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4796 local_got_tls_masks
[r_symndx
] |= tls_type
;
4798 return local_plt
+ r_symndx
;
4802 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4804 struct plt_entry
*ent
;
4806 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4807 if (ent
->addend
== addend
)
4811 bfd_size_type amt
= sizeof (*ent
);
4812 ent
= bfd_alloc (abfd
, amt
);
4816 ent
->addend
= addend
;
4817 ent
->plt
.refcount
= 0;
4820 ent
->plt
.refcount
+= 1;
4825 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4827 return (r_type
== R_PPC64_REL24
4828 || r_type
== R_PPC64_REL14
4829 || r_type
== R_PPC64_REL14_BRTAKEN
4830 || r_type
== R_PPC64_REL14_BRNTAKEN
4831 || r_type
== R_PPC64_ADDR24
4832 || r_type
== R_PPC64_ADDR14
4833 || r_type
== R_PPC64_ADDR14_BRTAKEN
4834 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4837 /* Look through the relocs for a section during the first phase, and
4838 calculate needed space in the global offset table, procedure
4839 linkage table, and dynamic reloc sections. */
4842 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4843 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4845 struct ppc_link_hash_table
*htab
;
4846 Elf_Internal_Shdr
*symtab_hdr
;
4847 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4848 const Elf_Internal_Rela
*rel
;
4849 const Elf_Internal_Rela
*rel_end
;
4851 asection
**opd_sym_map
;
4852 struct elf_link_hash_entry
*tga
, *dottga
;
4854 if (info
->relocatable
)
4857 /* Don't do anything special with non-loaded, non-alloced sections.
4858 In particular, any relocs in such sections should not affect GOT
4859 and PLT reference counting (ie. we don't allow them to create GOT
4860 or PLT entries), there's no possibility or desire to optimize TLS
4861 relocs, and there's not much point in propagating relocs to shared
4862 libs that the dynamic linker won't relocate. */
4863 if ((sec
->flags
& SEC_ALLOC
) == 0)
4866 BFD_ASSERT (is_ppc64_elf (abfd
));
4868 htab
= ppc_hash_table (info
);
4872 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4873 FALSE
, FALSE
, TRUE
);
4874 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4875 FALSE
, FALSE
, TRUE
);
4876 symtab_hdr
= &elf_symtab_hdr (abfd
);
4878 sym_hashes
= elf_sym_hashes (abfd
);
4879 sym_hashes_end
= (sym_hashes
4880 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4881 - symtab_hdr
->sh_info
);
4885 if (strcmp (sec
->name
, ".opd") == 0)
4887 /* Garbage collection needs some extra help with .opd sections.
4888 We don't want to necessarily keep everything referenced by
4889 relocs in .opd, as that would keep all functions. Instead,
4890 if we reference an .opd symbol (a function descriptor), we
4891 want to keep the function code symbol's section. This is
4892 easy for global symbols, but for local syms we need to keep
4893 information about the associated function section. */
4896 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4897 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4898 if (opd_sym_map
== NULL
)
4900 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4901 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4902 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4905 if (htab
->sfpr
== NULL
4906 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4909 rel_end
= relocs
+ sec
->reloc_count
;
4910 for (rel
= relocs
; rel
< rel_end
; rel
++)
4912 unsigned long r_symndx
;
4913 struct elf_link_hash_entry
*h
;
4914 enum elf_ppc64_reloc_type r_type
;
4916 struct _ppc64_elf_section_data
*ppc64_sec
;
4917 struct plt_entry
**ifunc
;
4919 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4920 if (r_symndx
< symtab_hdr
->sh_info
)
4924 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4925 h
= elf_follow_link (h
);
4932 if (h
->type
== STT_GNU_IFUNC
)
4935 ifunc
= &h
->plt
.plist
;
4940 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4945 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4947 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4948 rel
->r_addend
, PLT_IFUNC
);
4953 r_type
= ELF64_R_TYPE (rel
->r_info
);
4954 if (is_branch_reloc (r_type
))
4956 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4959 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4960 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4961 /* We have a new-style __tls_get_addr call with a marker
4965 /* Mark this section as having an old-style call. */
4966 sec
->has_tls_get_addr_call
= 1;
4969 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4971 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
4979 /* These special tls relocs tie a call to __tls_get_addr with
4980 its parameter symbol. */
4983 case R_PPC64_GOT_TLSLD16
:
4984 case R_PPC64_GOT_TLSLD16_LO
:
4985 case R_PPC64_GOT_TLSLD16_HI
:
4986 case R_PPC64_GOT_TLSLD16_HA
:
4987 tls_type
= TLS_TLS
| TLS_LD
;
4990 case R_PPC64_GOT_TLSGD16
:
4991 case R_PPC64_GOT_TLSGD16_LO
:
4992 case R_PPC64_GOT_TLSGD16_HI
:
4993 case R_PPC64_GOT_TLSGD16_HA
:
4994 tls_type
= TLS_TLS
| TLS_GD
;
4997 case R_PPC64_GOT_TPREL16_DS
:
4998 case R_PPC64_GOT_TPREL16_LO_DS
:
4999 case R_PPC64_GOT_TPREL16_HI
:
5000 case R_PPC64_GOT_TPREL16_HA
:
5001 if (!info
->executable
)
5002 info
->flags
|= DF_STATIC_TLS
;
5003 tls_type
= TLS_TLS
| TLS_TPREL
;
5006 case R_PPC64_GOT_DTPREL16_DS
:
5007 case R_PPC64_GOT_DTPREL16_LO_DS
:
5008 case R_PPC64_GOT_DTPREL16_HI
:
5009 case R_PPC64_GOT_DTPREL16_HA
:
5010 tls_type
= TLS_TLS
| TLS_DTPREL
;
5012 sec
->has_tls_reloc
= 1;
5016 case R_PPC64_GOT16_DS
:
5017 case R_PPC64_GOT16_HA
:
5018 case R_PPC64_GOT16_HI
:
5019 case R_PPC64_GOT16_LO
:
5020 case R_PPC64_GOT16_LO_DS
:
5021 /* This symbol requires a global offset table entry. */
5022 sec
->has_toc_reloc
= 1;
5023 if (r_type
== R_PPC64_GOT_TLSLD16
5024 || r_type
== R_PPC64_GOT_TLSGD16
5025 || r_type
== R_PPC64_GOT_TPREL16_DS
5026 || r_type
== R_PPC64_GOT_DTPREL16_DS
5027 || r_type
== R_PPC64_GOT16
5028 || r_type
== R_PPC64_GOT16_DS
)
5030 htab
->do_multi_toc
= 1;
5031 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5034 if (ppc64_elf_tdata (abfd
)->got
== NULL
5035 && !create_got_section (abfd
, info
))
5040 struct ppc_link_hash_entry
*eh
;
5041 struct got_entry
*ent
;
5043 eh
= (struct ppc_link_hash_entry
*) h
;
5044 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5045 if (ent
->addend
== rel
->r_addend
5046 && ent
->owner
== abfd
5047 && ent
->tls_type
== tls_type
)
5051 bfd_size_type amt
= sizeof (*ent
);
5052 ent
= bfd_alloc (abfd
, amt
);
5055 ent
->next
= eh
->elf
.got
.glist
;
5056 ent
->addend
= rel
->r_addend
;
5058 ent
->tls_type
= tls_type
;
5059 ent
->is_indirect
= FALSE
;
5060 ent
->got
.refcount
= 0;
5061 eh
->elf
.got
.glist
= ent
;
5063 ent
->got
.refcount
+= 1;
5064 eh
->tls_mask
|= tls_type
;
5067 /* This is a global offset table entry for a local symbol. */
5068 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5069 rel
->r_addend
, tls_type
))
5073 case R_PPC64_PLT16_HA
:
5074 case R_PPC64_PLT16_HI
:
5075 case R_PPC64_PLT16_LO
:
5078 /* This symbol requires a procedure linkage table entry. We
5079 actually build the entry in adjust_dynamic_symbol,
5080 because this might be a case of linking PIC code without
5081 linking in any dynamic objects, in which case we don't
5082 need to generate a procedure linkage table after all. */
5085 /* It does not make sense to have a procedure linkage
5086 table entry for a local symbol. */
5087 bfd_set_error (bfd_error_bad_value
);
5092 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5095 if (h
->root
.root
.string
[0] == '.'
5096 && h
->root
.root
.string
[1] != '\0')
5097 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5101 /* The following relocations don't need to propagate the
5102 relocation if linking a shared object since they are
5103 section relative. */
5104 case R_PPC64_SECTOFF
:
5105 case R_PPC64_SECTOFF_LO
:
5106 case R_PPC64_SECTOFF_HI
:
5107 case R_PPC64_SECTOFF_HA
:
5108 case R_PPC64_SECTOFF_DS
:
5109 case R_PPC64_SECTOFF_LO_DS
:
5110 case R_PPC64_DTPREL16
:
5111 case R_PPC64_DTPREL16_LO
:
5112 case R_PPC64_DTPREL16_HI
:
5113 case R_PPC64_DTPREL16_HA
:
5114 case R_PPC64_DTPREL16_DS
:
5115 case R_PPC64_DTPREL16_LO_DS
:
5116 case R_PPC64_DTPREL16_HIGHER
:
5117 case R_PPC64_DTPREL16_HIGHERA
:
5118 case R_PPC64_DTPREL16_HIGHEST
:
5119 case R_PPC64_DTPREL16_HIGHESTA
:
5124 case R_PPC64_REL16_LO
:
5125 case R_PPC64_REL16_HI
:
5126 case R_PPC64_REL16_HA
:
5130 case R_PPC64_TOC16_DS
:
5131 htab
->do_multi_toc
= 1;
5132 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5133 case R_PPC64_TOC16_LO
:
5134 case R_PPC64_TOC16_HI
:
5135 case R_PPC64_TOC16_HA
:
5136 case R_PPC64_TOC16_LO_DS
:
5137 sec
->has_toc_reloc
= 1;
5140 /* This relocation describes the C++ object vtable hierarchy.
5141 Reconstruct it for later use during GC. */
5142 case R_PPC64_GNU_VTINHERIT
:
5143 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5147 /* This relocation describes which C++ vtable entries are actually
5148 used. Record for later use during GC. */
5149 case R_PPC64_GNU_VTENTRY
:
5150 BFD_ASSERT (h
!= NULL
);
5152 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5157 case R_PPC64_REL14_BRTAKEN
:
5158 case R_PPC64_REL14_BRNTAKEN
:
5160 asection
*dest
= NULL
;
5162 /* Heuristic: If jumping outside our section, chances are
5163 we are going to need a stub. */
5166 /* If the sym is weak it may be overridden later, so
5167 don't assume we know where a weak sym lives. */
5168 if (h
->root
.type
== bfd_link_hash_defined
)
5169 dest
= h
->root
.u
.def
.section
;
5173 Elf_Internal_Sym
*isym
;
5175 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5180 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5184 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5189 if (h
!= NULL
&& ifunc
== NULL
)
5191 /* We may need a .plt entry if the function this reloc
5192 refers to is in a shared lib. */
5193 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5196 if (h
->root
.root
.string
[0] == '.'
5197 && h
->root
.root
.string
[1] != '\0')
5198 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5199 if (h
== tga
|| h
== dottga
)
5200 sec
->has_tls_reloc
= 1;
5204 case R_PPC64_TPREL64
:
5205 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5206 if (!info
->executable
)
5207 info
->flags
|= DF_STATIC_TLS
;
5210 case R_PPC64_DTPMOD64
:
5211 if (rel
+ 1 < rel_end
5212 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5213 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5214 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5216 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5219 case R_PPC64_DTPREL64
:
5220 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5222 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5223 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5224 /* This is the second reloc of a dtpmod, dtprel pair.
5225 Don't mark with TLS_DTPREL. */
5229 sec
->has_tls_reloc
= 1;
5232 struct ppc_link_hash_entry
*eh
;
5233 eh
= (struct ppc_link_hash_entry
*) h
;
5234 eh
->tls_mask
|= tls_type
;
5237 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5238 rel
->r_addend
, tls_type
))
5241 ppc64_sec
= ppc64_elf_section_data (sec
);
5242 if (ppc64_sec
->sec_type
!= sec_toc
)
5246 /* One extra to simplify get_tls_mask. */
5247 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5248 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5249 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5251 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5252 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5253 if (ppc64_sec
->u
.toc
.add
== NULL
)
5255 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5256 ppc64_sec
->sec_type
= sec_toc
;
5258 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5259 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5260 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5262 /* Mark the second slot of a GD or LD entry.
5263 -1 to indicate GD and -2 to indicate LD. */
5264 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5265 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5266 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5267 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5270 case R_PPC64_TPREL16
:
5271 case R_PPC64_TPREL16_LO
:
5272 case R_PPC64_TPREL16_HI
:
5273 case R_PPC64_TPREL16_HA
:
5274 case R_PPC64_TPREL16_DS
:
5275 case R_PPC64_TPREL16_LO_DS
:
5276 case R_PPC64_TPREL16_HIGHER
:
5277 case R_PPC64_TPREL16_HIGHERA
:
5278 case R_PPC64_TPREL16_HIGHEST
:
5279 case R_PPC64_TPREL16_HIGHESTA
:
5282 if (!info
->executable
)
5283 info
->flags
|= DF_STATIC_TLS
;
5288 case R_PPC64_ADDR64
:
5289 if (opd_sym_map
!= NULL
5290 && rel
+ 1 < rel_end
5291 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5295 if (h
->root
.root
.string
[0] == '.'
5296 && h
->root
.root
.string
[1] != 0
5297 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5300 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5305 Elf_Internal_Sym
*isym
;
5307 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5312 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5313 if (s
!= NULL
&& s
!= sec
)
5314 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5322 case R_PPC64_ADDR14
:
5323 case R_PPC64_ADDR14_BRNTAKEN
:
5324 case R_PPC64_ADDR14_BRTAKEN
:
5325 case R_PPC64_ADDR16
:
5326 case R_PPC64_ADDR16_DS
:
5327 case R_PPC64_ADDR16_HA
:
5328 case R_PPC64_ADDR16_HI
:
5329 case R_PPC64_ADDR16_HIGHER
:
5330 case R_PPC64_ADDR16_HIGHERA
:
5331 case R_PPC64_ADDR16_HIGHEST
:
5332 case R_PPC64_ADDR16_HIGHESTA
:
5333 case R_PPC64_ADDR16_LO
:
5334 case R_PPC64_ADDR16_LO_DS
:
5335 case R_PPC64_ADDR24
:
5336 case R_PPC64_ADDR32
:
5337 case R_PPC64_UADDR16
:
5338 case R_PPC64_UADDR32
:
5339 case R_PPC64_UADDR64
:
5341 if (h
!= NULL
&& !info
->shared
)
5342 /* We may need a copy reloc. */
5345 /* Don't propagate .opd relocs. */
5346 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5349 /* If we are creating a shared library, and this is a reloc
5350 against a global symbol, or a non PC relative reloc
5351 against a local symbol, then we need to copy the reloc
5352 into the shared library. However, if we are linking with
5353 -Bsymbolic, we do not need to copy a reloc against a
5354 global symbol which is defined in an object we are
5355 including in the link (i.e., DEF_REGULAR is set). At
5356 this point we have not seen all the input files, so it is
5357 possible that DEF_REGULAR is not set now but will be set
5358 later (it is never cleared). In case of a weak definition,
5359 DEF_REGULAR may be cleared later by a strong definition in
5360 a shared library. We account for that possibility below by
5361 storing information in the dyn_relocs field of the hash
5362 table entry. A similar situation occurs when creating
5363 shared libraries and symbol visibility changes render the
5366 If on the other hand, we are creating an executable, we
5367 may need to keep relocations for symbols satisfied by a
5368 dynamic library if we manage to avoid copy relocs for the
5372 && (must_be_dyn_reloc (info
, r_type
)
5374 && (! info
->symbolic
5375 || h
->root
.type
== bfd_link_hash_defweak
5376 || !h
->def_regular
))))
5377 || (ELIMINATE_COPY_RELOCS
5380 && (h
->root
.type
== bfd_link_hash_defweak
5381 || !h
->def_regular
))
5385 struct ppc_dyn_relocs
*p
;
5386 struct ppc_dyn_relocs
**head
;
5388 /* We must copy these reloc types into the output file.
5389 Create a reloc section in dynobj and make room for
5393 sreloc
= _bfd_elf_make_dynamic_reloc_section
5394 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5400 /* If this is a global symbol, we count the number of
5401 relocations we need for this symbol. */
5404 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5408 /* Track dynamic relocs needed for local syms too.
5409 We really need local syms available to do this
5413 Elf_Internal_Sym
*isym
;
5415 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5420 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5424 vpp
= &elf_section_data (s
)->local_dynrel
;
5425 head
= (struct ppc_dyn_relocs
**) vpp
;
5429 if (p
== NULL
|| p
->sec
!= sec
)
5431 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5442 if (!must_be_dyn_reloc (info
, r_type
))
5455 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5456 of the code entry point, and its section. */
5459 opd_entry_value (asection
*opd_sec
,
5461 asection
**code_sec
,
5464 bfd
*opd_bfd
= opd_sec
->owner
;
5465 Elf_Internal_Rela
*relocs
;
5466 Elf_Internal_Rela
*lo
, *hi
, *look
;
5469 /* No relocs implies we are linking a --just-symbols object. */
5470 if (opd_sec
->reloc_count
== 0)
5472 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5473 return (bfd_vma
) -1;
5475 if (code_sec
!= NULL
)
5477 asection
*sec
, *likely
= NULL
;
5478 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5480 && (sec
->flags
& SEC_LOAD
) != 0
5481 && (sec
->flags
& SEC_ALLOC
) != 0)
5486 if (code_off
!= NULL
)
5487 *code_off
= val
- likely
->vma
;
5493 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5495 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5497 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5499 /* Go find the opd reloc at the sym address. */
5501 BFD_ASSERT (lo
!= NULL
);
5502 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5506 look
= lo
+ (hi
- lo
) / 2;
5507 if (look
->r_offset
< offset
)
5509 else if (look
->r_offset
> offset
)
5513 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5515 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5516 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5518 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5521 if (symndx
< symtab_hdr
->sh_info
)
5523 Elf_Internal_Sym
*sym
;
5525 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5528 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5529 symtab_hdr
->sh_info
,
5530 0, NULL
, NULL
, NULL
);
5533 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5537 val
= sym
->st_value
;
5538 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5539 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5543 struct elf_link_hash_entry
**sym_hashes
;
5544 struct elf_link_hash_entry
*rh
;
5546 sym_hashes
= elf_sym_hashes (opd_bfd
);
5547 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5548 rh
= elf_follow_link (rh
);
5549 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5550 || rh
->root
.type
== bfd_link_hash_defweak
);
5551 val
= rh
->root
.u
.def
.value
;
5552 sec
= rh
->root
.u
.def
.section
;
5554 val
+= look
->r_addend
;
5555 if (code_off
!= NULL
)
5557 if (code_sec
!= NULL
)
5559 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5560 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5569 /* Return true if symbol is defined in a regular object file. */
5572 is_static_defined (struct elf_link_hash_entry
*h
)
5574 return ((h
->root
.type
== bfd_link_hash_defined
5575 || h
->root
.type
== bfd_link_hash_defweak
)
5576 && h
->root
.u
.def
.section
!= NULL
5577 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5580 /* If FDH is a function descriptor symbol, return the associated code
5581 entry symbol if it is defined. Return NULL otherwise. */
5583 static struct ppc_link_hash_entry
*
5584 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5586 if (fdh
->is_func_descriptor
)
5588 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5589 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5590 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5596 /* If FH is a function code entry symbol, return the associated
5597 function descriptor symbol if it is defined. Return NULL otherwise. */
5599 static struct ppc_link_hash_entry
*
5600 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5603 && fh
->oh
->is_func_descriptor
)
5605 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5606 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5607 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5613 /* Mark all our entry sym sections, both opd and code section. */
5616 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5618 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5619 struct bfd_sym_chain
*sym
;
5624 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5626 struct ppc_link_hash_entry
*eh
, *fh
;
5629 eh
= (struct ppc_link_hash_entry
*)
5630 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5633 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5634 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5637 fh
= defined_code_entry (eh
);
5640 sec
= fh
->elf
.root
.u
.def
.section
;
5641 sec
->flags
|= SEC_KEEP
;
5643 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5644 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5645 eh
->elf
.root
.u
.def
.value
,
5646 &sec
, NULL
) != (bfd_vma
) -1)
5647 sec
->flags
|= SEC_KEEP
;
5649 sec
= eh
->elf
.root
.u
.def
.section
;
5650 sec
->flags
|= SEC_KEEP
;
5654 /* Mark sections containing dynamically referenced symbols. When
5655 building shared libraries, we must assume that any visible symbol is
5659 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5661 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5662 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5663 struct ppc_link_hash_entry
*fdh
;
5665 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5666 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5668 /* Dynamic linking info is on the func descriptor sym. */
5669 fdh
= defined_func_desc (eh
);
5673 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5674 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5675 && (eh
->elf
.ref_dynamic
5676 || (!info
->executable
5677 && eh
->elf
.def_regular
5678 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5679 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5682 struct ppc_link_hash_entry
*fh
;
5684 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5686 /* Function descriptor syms cause the associated
5687 function code sym section to be marked. */
5688 fh
= defined_code_entry (eh
);
5691 code_sec
= fh
->elf
.root
.u
.def
.section
;
5692 code_sec
->flags
|= SEC_KEEP
;
5694 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5695 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5696 eh
->elf
.root
.u
.def
.value
,
5697 &code_sec
, NULL
) != (bfd_vma
) -1)
5698 code_sec
->flags
|= SEC_KEEP
;
5704 /* Return the section that should be marked against GC for a given
5708 ppc64_elf_gc_mark_hook (asection
*sec
,
5709 struct bfd_link_info
*info
,
5710 Elf_Internal_Rela
*rel
,
5711 struct elf_link_hash_entry
*h
,
5712 Elf_Internal_Sym
*sym
)
5716 /* Syms return NULL if we're marking .opd, so we avoid marking all
5717 function sections, as all functions are referenced in .opd. */
5719 if (get_opd_info (sec
) != NULL
)
5724 enum elf_ppc64_reloc_type r_type
;
5725 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5727 r_type
= ELF64_R_TYPE (rel
->r_info
);
5730 case R_PPC64_GNU_VTINHERIT
:
5731 case R_PPC64_GNU_VTENTRY
:
5735 switch (h
->root
.type
)
5737 case bfd_link_hash_defined
:
5738 case bfd_link_hash_defweak
:
5739 eh
= (struct ppc_link_hash_entry
*) h
;
5740 fdh
= defined_func_desc (eh
);
5744 /* Function descriptor syms cause the associated
5745 function code sym section to be marked. */
5746 fh
= defined_code_entry (eh
);
5749 /* They also mark their opd section. */
5750 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5752 rsec
= fh
->elf
.root
.u
.def
.section
;
5754 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5755 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5756 eh
->elf
.root
.u
.def
.value
,
5757 &rsec
, NULL
) != (bfd_vma
) -1)
5758 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5760 rsec
= h
->root
.u
.def
.section
;
5763 case bfd_link_hash_common
:
5764 rsec
= h
->root
.u
.c
.p
->section
;
5768 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5774 struct _opd_sec_data
*opd
;
5776 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5777 opd
= get_opd_info (rsec
);
5778 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5782 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5789 /* Update the .got, .plt. and dynamic reloc reference counts for the
5790 section being removed. */
5793 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5794 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5796 struct ppc_link_hash_table
*htab
;
5797 Elf_Internal_Shdr
*symtab_hdr
;
5798 struct elf_link_hash_entry
**sym_hashes
;
5799 struct got_entry
**local_got_ents
;
5800 const Elf_Internal_Rela
*rel
, *relend
;
5802 if (info
->relocatable
)
5805 if ((sec
->flags
& SEC_ALLOC
) == 0)
5808 elf_section_data (sec
)->local_dynrel
= NULL
;
5810 htab
= ppc_hash_table (info
);
5814 symtab_hdr
= &elf_symtab_hdr (abfd
);
5815 sym_hashes
= elf_sym_hashes (abfd
);
5816 local_got_ents
= elf_local_got_ents (abfd
);
5818 relend
= relocs
+ sec
->reloc_count
;
5819 for (rel
= relocs
; rel
< relend
; rel
++)
5821 unsigned long r_symndx
;
5822 enum elf_ppc64_reloc_type r_type
;
5823 struct elf_link_hash_entry
*h
= NULL
;
5824 unsigned char tls_type
= 0;
5826 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5827 r_type
= ELF64_R_TYPE (rel
->r_info
);
5828 if (r_symndx
>= symtab_hdr
->sh_info
)
5830 struct ppc_link_hash_entry
*eh
;
5831 struct ppc_dyn_relocs
**pp
;
5832 struct ppc_dyn_relocs
*p
;
5834 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5835 h
= elf_follow_link (h
);
5836 eh
= (struct ppc_link_hash_entry
*) h
;
5838 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5841 /* Everything must go for SEC. */
5847 if (is_branch_reloc (r_type
))
5849 struct plt_entry
**ifunc
= NULL
;
5852 if (h
->type
== STT_GNU_IFUNC
)
5853 ifunc
= &h
->plt
.plist
;
5855 else if (local_got_ents
!= NULL
)
5857 struct plt_entry
**local_plt
= (struct plt_entry
**)
5858 (local_got_ents
+ symtab_hdr
->sh_info
);
5859 unsigned char *local_got_tls_masks
= (unsigned char *)
5860 (local_plt
+ symtab_hdr
->sh_info
);
5861 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5862 ifunc
= local_plt
+ r_symndx
;
5866 struct plt_entry
*ent
;
5868 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5869 if (ent
->addend
== rel
->r_addend
)
5873 if (ent
->plt
.refcount
> 0)
5874 ent
->plt
.refcount
-= 1;
5881 case R_PPC64_GOT_TLSLD16
:
5882 case R_PPC64_GOT_TLSLD16_LO
:
5883 case R_PPC64_GOT_TLSLD16_HI
:
5884 case R_PPC64_GOT_TLSLD16_HA
:
5885 tls_type
= TLS_TLS
| TLS_LD
;
5888 case R_PPC64_GOT_TLSGD16
:
5889 case R_PPC64_GOT_TLSGD16_LO
:
5890 case R_PPC64_GOT_TLSGD16_HI
:
5891 case R_PPC64_GOT_TLSGD16_HA
:
5892 tls_type
= TLS_TLS
| TLS_GD
;
5895 case R_PPC64_GOT_TPREL16_DS
:
5896 case R_PPC64_GOT_TPREL16_LO_DS
:
5897 case R_PPC64_GOT_TPREL16_HI
:
5898 case R_PPC64_GOT_TPREL16_HA
:
5899 tls_type
= TLS_TLS
| TLS_TPREL
;
5902 case R_PPC64_GOT_DTPREL16_DS
:
5903 case R_PPC64_GOT_DTPREL16_LO_DS
:
5904 case R_PPC64_GOT_DTPREL16_HI
:
5905 case R_PPC64_GOT_DTPREL16_HA
:
5906 tls_type
= TLS_TLS
| TLS_DTPREL
;
5910 case R_PPC64_GOT16_DS
:
5911 case R_PPC64_GOT16_HA
:
5912 case R_PPC64_GOT16_HI
:
5913 case R_PPC64_GOT16_LO
:
5914 case R_PPC64_GOT16_LO_DS
:
5917 struct got_entry
*ent
;
5922 ent
= local_got_ents
[r_symndx
];
5924 for (; ent
!= NULL
; ent
= ent
->next
)
5925 if (ent
->addend
== rel
->r_addend
5926 && ent
->owner
== abfd
5927 && ent
->tls_type
== tls_type
)
5931 if (ent
->got
.refcount
> 0)
5932 ent
->got
.refcount
-= 1;
5936 case R_PPC64_PLT16_HA
:
5937 case R_PPC64_PLT16_HI
:
5938 case R_PPC64_PLT16_LO
:
5942 case R_PPC64_REL14_BRNTAKEN
:
5943 case R_PPC64_REL14_BRTAKEN
:
5947 struct plt_entry
*ent
;
5949 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5950 if (ent
->addend
== rel
->r_addend
)
5952 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5953 ent
->plt
.refcount
-= 1;
5964 /* The maximum size of .sfpr. */
5965 #define SFPR_MAX (218*4)
5967 struct sfpr_def_parms
5969 const char name
[12];
5970 unsigned char lo
, hi
;
5971 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5972 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5975 /* Auto-generate _save*, _rest* functions in .sfpr. */
5978 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5980 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5982 size_t len
= strlen (parm
->name
);
5983 bfd_boolean writing
= FALSE
;
5989 memcpy (sym
, parm
->name
, len
);
5992 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5994 struct elf_link_hash_entry
*h
;
5996 sym
[len
+ 0] = i
/ 10 + '0';
5997 sym
[len
+ 1] = i
% 10 + '0';
5998 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6002 h
->root
.type
= bfd_link_hash_defined
;
6003 h
->root
.u
.def
.section
= htab
->sfpr
;
6004 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6007 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6009 if (htab
->sfpr
->contents
== NULL
)
6011 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6012 if (htab
->sfpr
->contents
== NULL
)
6018 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6020 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6022 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6023 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6031 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6033 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6038 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6040 p
= savegpr0 (abfd
, p
, r
);
6041 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6043 bfd_put_32 (abfd
, BLR
, p
);
6048 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6050 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6055 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6057 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6059 p
= restgpr0 (abfd
, p
, r
);
6060 bfd_put_32 (abfd
, MTLR_R0
, p
);
6064 p
= restgpr0 (abfd
, p
, 30);
6065 p
= restgpr0 (abfd
, p
, 31);
6067 bfd_put_32 (abfd
, BLR
, p
);
6072 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6074 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6079 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6081 p
= savegpr1 (abfd
, p
, r
);
6082 bfd_put_32 (abfd
, BLR
, p
);
6087 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6089 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6094 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6096 p
= restgpr1 (abfd
, p
, r
);
6097 bfd_put_32 (abfd
, BLR
, p
);
6102 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6104 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6109 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6111 p
= savefpr (abfd
, p
, r
);
6112 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6114 bfd_put_32 (abfd
, BLR
, p
);
6119 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6121 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6126 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6128 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6130 p
= restfpr (abfd
, p
, r
);
6131 bfd_put_32 (abfd
, MTLR_R0
, p
);
6135 p
= restfpr (abfd
, p
, 30);
6136 p
= restfpr (abfd
, p
, 31);
6138 bfd_put_32 (abfd
, BLR
, p
);
6143 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6145 p
= savefpr (abfd
, p
, r
);
6146 bfd_put_32 (abfd
, BLR
, p
);
6151 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6153 p
= restfpr (abfd
, p
, r
);
6154 bfd_put_32 (abfd
, BLR
, p
);
6159 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6161 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6163 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6168 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6170 p
= savevr (abfd
, p
, r
);
6171 bfd_put_32 (abfd
, BLR
, p
);
6176 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6178 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6180 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6185 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6187 p
= restvr (abfd
, p
, r
);
6188 bfd_put_32 (abfd
, BLR
, p
);
6192 /* Called via elf_link_hash_traverse to transfer dynamic linking
6193 information on function code symbol entries to their corresponding
6194 function descriptor symbol entries. */
6197 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6199 struct bfd_link_info
*info
;
6200 struct ppc_link_hash_table
*htab
;
6201 struct plt_entry
*ent
;
6202 struct ppc_link_hash_entry
*fh
;
6203 struct ppc_link_hash_entry
*fdh
;
6204 bfd_boolean force_local
;
6206 fh
= (struct ppc_link_hash_entry
*) h
;
6207 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6210 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6211 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6214 htab
= ppc_hash_table (info
);
6218 /* Resolve undefined references to dot-symbols as the value
6219 in the function descriptor, if we have one in a regular object.
6220 This is to satisfy cases like ".quad .foo". Calls to functions
6221 in dynamic objects are handled elsewhere. */
6222 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6223 && fh
->was_undefined
6224 && (fdh
= defined_func_desc (fh
)) != NULL
6225 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6226 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6227 fdh
->elf
.root
.u
.def
.value
,
6228 &fh
->elf
.root
.u
.def
.section
,
6229 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6231 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6232 fh
->elf
.forced_local
= 1;
6233 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6234 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6237 /* If this is a function code symbol, transfer dynamic linking
6238 information to the function descriptor symbol. */
6242 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6243 if (ent
->plt
.refcount
> 0)
6246 || fh
->elf
.root
.root
.string
[0] != '.'
6247 || fh
->elf
.root
.root
.string
[1] == '\0')
6250 /* Find the corresponding function descriptor symbol. Create it
6251 as undefined if necessary. */
6253 fdh
= lookup_fdh (fh
, htab
);
6255 && !info
->executable
6256 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6257 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6259 fdh
= make_fdh (info
, fh
);
6264 /* Fake function descriptors are made undefweak. If the function
6265 code symbol is strong undefined, make the fake sym the same.
6266 If the function code symbol is defined, then force the fake
6267 descriptor local; We can't support overriding of symbols in a
6268 shared library on a fake descriptor. */
6272 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6274 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6276 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6277 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6279 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6280 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6282 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6287 && !fdh
->elf
.forced_local
6288 && (!info
->executable
6289 || fdh
->elf
.def_dynamic
6290 || fdh
->elf
.ref_dynamic
6291 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6292 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6294 if (fdh
->elf
.dynindx
== -1)
6295 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6297 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6298 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6299 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6300 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6301 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6303 move_plt_plist (fh
, fdh
);
6304 fdh
->elf
.needs_plt
= 1;
6306 fdh
->is_func_descriptor
= 1;
6311 /* Now that the info is on the function descriptor, clear the
6312 function code sym info. Any function code syms for which we
6313 don't have a definition in a regular file, we force local.
6314 This prevents a shared library from exporting syms that have
6315 been imported from another library. Function code syms that
6316 are really in the library we must leave global to prevent the
6317 linker dragging in a definition from a static library. */
6318 force_local
= (!fh
->elf
.def_regular
6320 || !fdh
->elf
.def_regular
6321 || fdh
->elf
.forced_local
);
6322 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6327 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6328 this hook to a) provide some gcc support functions, and b) transfer
6329 dynamic linking information gathered so far on function code symbol
6330 entries, to their corresponding function descriptor symbol entries. */
6333 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6334 struct bfd_link_info
*info
)
6336 struct ppc_link_hash_table
*htab
;
6338 const struct sfpr_def_parms funcs
[] =
6340 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6341 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6342 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6343 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6344 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6345 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6346 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6347 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6348 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6349 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6350 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6351 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6354 htab
= ppc_hash_table (info
);
6358 if (htab
->sfpr
== NULL
)
6359 /* We don't have any relocs. */
6362 /* Provide any missing _save* and _rest* functions. */
6363 htab
->sfpr
->size
= 0;
6364 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6365 if (!sfpr_define (info
, &funcs
[i
]))
6368 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6370 if (htab
->sfpr
->size
== 0)
6371 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6376 /* Adjust a symbol defined by a dynamic object and referenced by a
6377 regular object. The current definition is in some section of the
6378 dynamic object, but we're not including those sections. We have to
6379 change the definition to something the rest of the link can
6383 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6384 struct elf_link_hash_entry
*h
)
6386 struct ppc_link_hash_table
*htab
;
6389 htab
= ppc_hash_table (info
);
6393 /* Deal with function syms. */
6394 if (h
->type
== STT_FUNC
6395 || h
->type
== STT_GNU_IFUNC
6398 /* Clear procedure linkage table information for any symbol that
6399 won't need a .plt entry. */
6400 struct plt_entry
*ent
;
6401 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6402 if (ent
->plt
.refcount
> 0)
6405 || (h
->type
!= STT_GNU_IFUNC
6406 && (SYMBOL_CALLS_LOCAL (info
, h
)
6407 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6408 && h
->root
.type
== bfd_link_hash_undefweak
))))
6410 h
->plt
.plist
= NULL
;
6415 h
->plt
.plist
= NULL
;
6417 /* If this is a weak symbol, and there is a real definition, the
6418 processor independent code will have arranged for us to see the
6419 real definition first, and we can just use the same value. */
6420 if (h
->u
.weakdef
!= NULL
)
6422 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6423 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6424 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6425 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6426 if (ELIMINATE_COPY_RELOCS
)
6427 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6431 /* If we are creating a shared library, we must presume that the
6432 only references to the symbol are via the global offset table.
6433 For such cases we need not do anything here; the relocations will
6434 be handled correctly by relocate_section. */
6438 /* If there are no references to this symbol that do not use the
6439 GOT, we don't need to generate a copy reloc. */
6440 if (!h
->non_got_ref
)
6443 /* Don't generate a copy reloc for symbols defined in the executable. */
6444 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6447 if (ELIMINATE_COPY_RELOCS
)
6449 struct ppc_link_hash_entry
* eh
;
6450 struct ppc_dyn_relocs
*p
;
6452 eh
= (struct ppc_link_hash_entry
*) h
;
6453 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6455 s
= p
->sec
->output_section
;
6456 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6460 /* If we didn't find any dynamic relocs in read-only sections, then
6461 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6469 if (h
->plt
.plist
!= NULL
)
6471 /* We should never get here, but unfortunately there are versions
6472 of gcc out there that improperly (for this ABI) put initialized
6473 function pointers, vtable refs and suchlike in read-only
6474 sections. Allow them to proceed, but warn that this might
6475 break at runtime. */
6476 (*_bfd_error_handler
)
6477 (_("copy reloc against `%s' requires lazy plt linking; "
6478 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6479 h
->root
.root
.string
);
6482 /* This is a reference to a symbol defined by a dynamic object which
6483 is not a function. */
6487 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6488 h
->root
.root
.string
);
6492 /* We must allocate the symbol in our .dynbss section, which will
6493 become part of the .bss section of the executable. There will be
6494 an entry for this symbol in the .dynsym section. The dynamic
6495 object will contain position independent code, so all references
6496 from the dynamic object to this symbol will go through the global
6497 offset table. The dynamic linker will use the .dynsym entry to
6498 determine the address it must put in the global offset table, so
6499 both the dynamic object and the regular object will refer to the
6500 same memory location for the variable. */
6502 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6503 to copy the initial value out of the dynamic object and into the
6504 runtime process image. We need to remember the offset into the
6505 .rela.bss section we are going to use. */
6506 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6508 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6514 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6517 /* If given a function descriptor symbol, hide both the function code
6518 sym and the descriptor. */
6520 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6521 struct elf_link_hash_entry
*h
,
6522 bfd_boolean force_local
)
6524 struct ppc_link_hash_entry
*eh
;
6525 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6527 eh
= (struct ppc_link_hash_entry
*) h
;
6528 if (eh
->is_func_descriptor
)
6530 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6535 struct ppc_link_hash_table
*htab
;
6538 /* We aren't supposed to use alloca in BFD because on
6539 systems which do not have alloca the version in libiberty
6540 calls xmalloc, which might cause the program to crash
6541 when it runs out of memory. This function doesn't have a
6542 return status, so there's no way to gracefully return an
6543 error. So cheat. We know that string[-1] can be safely
6544 accessed; It's either a string in an ELF string table,
6545 or allocated in an objalloc structure. */
6547 p
= eh
->elf
.root
.root
.string
- 1;
6550 htab
= ppc_hash_table (info
);
6554 fh
= (struct ppc_link_hash_entry
*)
6555 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6558 /* Unfortunately, if it so happens that the string we were
6559 looking for was allocated immediately before this string,
6560 then we overwrote the string terminator. That's the only
6561 reason the lookup should fail. */
6564 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6565 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6567 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6568 fh
= (struct ppc_link_hash_entry
*)
6569 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6578 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6583 get_sym_h (struct elf_link_hash_entry
**hp
,
6584 Elf_Internal_Sym
**symp
,
6586 unsigned char **tls_maskp
,
6587 Elf_Internal_Sym
**locsymsp
,
6588 unsigned long r_symndx
,
6591 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6593 if (r_symndx
>= symtab_hdr
->sh_info
)
6595 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6596 struct elf_link_hash_entry
*h
;
6598 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6599 h
= elf_follow_link (h
);
6607 if (symsecp
!= NULL
)
6609 asection
*symsec
= NULL
;
6610 if (h
->root
.type
== bfd_link_hash_defined
6611 || h
->root
.type
== bfd_link_hash_defweak
)
6612 symsec
= h
->root
.u
.def
.section
;
6616 if (tls_maskp
!= NULL
)
6618 struct ppc_link_hash_entry
*eh
;
6620 eh
= (struct ppc_link_hash_entry
*) h
;
6621 *tls_maskp
= &eh
->tls_mask
;
6626 Elf_Internal_Sym
*sym
;
6627 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6629 if (locsyms
== NULL
)
6631 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6632 if (locsyms
== NULL
)
6633 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6634 symtab_hdr
->sh_info
,
6635 0, NULL
, NULL
, NULL
);
6636 if (locsyms
== NULL
)
6638 *locsymsp
= locsyms
;
6640 sym
= locsyms
+ r_symndx
;
6648 if (symsecp
!= NULL
)
6649 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6651 if (tls_maskp
!= NULL
)
6653 struct got_entry
**lgot_ents
;
6654 unsigned char *tls_mask
;
6657 lgot_ents
= elf_local_got_ents (ibfd
);
6658 if (lgot_ents
!= NULL
)
6660 struct plt_entry
**local_plt
= (struct plt_entry
**)
6661 (lgot_ents
+ symtab_hdr
->sh_info
);
6662 unsigned char *lgot_masks
= (unsigned char *)
6663 (local_plt
+ symtab_hdr
->sh_info
);
6664 tls_mask
= &lgot_masks
[r_symndx
];
6666 *tls_maskp
= tls_mask
;
6672 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6673 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6674 type suitable for optimization, and 1 otherwise. */
6677 get_tls_mask (unsigned char **tls_maskp
,
6678 unsigned long *toc_symndx
,
6679 bfd_vma
*toc_addend
,
6680 Elf_Internal_Sym
**locsymsp
,
6681 const Elf_Internal_Rela
*rel
,
6684 unsigned long r_symndx
;
6686 struct elf_link_hash_entry
*h
;
6687 Elf_Internal_Sym
*sym
;
6691 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6692 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6695 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6697 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6700 /* Look inside a TOC section too. */
6703 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6704 off
= h
->root
.u
.def
.value
;
6707 off
= sym
->st_value
;
6708 off
+= rel
->r_addend
;
6709 BFD_ASSERT (off
% 8 == 0);
6710 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6711 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6712 if (toc_symndx
!= NULL
)
6713 *toc_symndx
= r_symndx
;
6714 if (toc_addend
!= NULL
)
6715 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6716 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6718 if ((h
== NULL
|| is_static_defined (h
))
6719 && (next_r
== -1 || next_r
== -2))
6724 /* Adjust all global syms defined in opd sections. In gcc generated
6725 code for the old ABI, these will already have been done. */
6728 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6730 struct ppc_link_hash_entry
*eh
;
6732 struct _opd_sec_data
*opd
;
6734 if (h
->root
.type
== bfd_link_hash_indirect
)
6737 if (h
->root
.type
== bfd_link_hash_warning
)
6738 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6740 if (h
->root
.type
!= bfd_link_hash_defined
6741 && h
->root
.type
!= bfd_link_hash_defweak
)
6744 eh
= (struct ppc_link_hash_entry
*) h
;
6745 if (eh
->adjust_done
)
6748 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6749 opd
= get_opd_info (sym_sec
);
6750 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6752 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6755 /* This entry has been deleted. */
6756 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6759 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6760 if (elf_discarded_section (dsec
))
6762 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6766 eh
->elf
.root
.u
.def
.value
= 0;
6767 eh
->elf
.root
.u
.def
.section
= dsec
;
6770 eh
->elf
.root
.u
.def
.value
+= adjust
;
6771 eh
->adjust_done
= 1;
6776 /* Handles decrementing dynamic reloc counts for the reloc specified by
6777 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6778 have already been determined. */
6781 dec_dynrel_count (bfd_vma r_info
,
6783 struct bfd_link_info
*info
,
6784 Elf_Internal_Sym
**local_syms
,
6785 struct elf_link_hash_entry
*h
,
6788 enum elf_ppc64_reloc_type r_type
;
6789 struct ppc_dyn_relocs
*p
;
6790 struct ppc_dyn_relocs
**pp
;
6792 /* Can this reloc be dynamic? This switch, and later tests here
6793 should be kept in sync with the code in check_relocs. */
6794 r_type
= ELF64_R_TYPE (r_info
);
6800 case R_PPC64_TPREL16
:
6801 case R_PPC64_TPREL16_LO
:
6802 case R_PPC64_TPREL16_HI
:
6803 case R_PPC64_TPREL16_HA
:
6804 case R_PPC64_TPREL16_DS
:
6805 case R_PPC64_TPREL16_LO_DS
:
6806 case R_PPC64_TPREL16_HIGHER
:
6807 case R_PPC64_TPREL16_HIGHERA
:
6808 case R_PPC64_TPREL16_HIGHEST
:
6809 case R_PPC64_TPREL16_HIGHESTA
:
6813 case R_PPC64_TPREL64
:
6814 case R_PPC64_DTPMOD64
:
6815 case R_PPC64_DTPREL64
:
6816 case R_PPC64_ADDR64
:
6820 case R_PPC64_ADDR14
:
6821 case R_PPC64_ADDR14_BRNTAKEN
:
6822 case R_PPC64_ADDR14_BRTAKEN
:
6823 case R_PPC64_ADDR16
:
6824 case R_PPC64_ADDR16_DS
:
6825 case R_PPC64_ADDR16_HA
:
6826 case R_PPC64_ADDR16_HI
:
6827 case R_PPC64_ADDR16_HIGHER
:
6828 case R_PPC64_ADDR16_HIGHERA
:
6829 case R_PPC64_ADDR16_HIGHEST
:
6830 case R_PPC64_ADDR16_HIGHESTA
:
6831 case R_PPC64_ADDR16_LO
:
6832 case R_PPC64_ADDR16_LO_DS
:
6833 case R_PPC64_ADDR24
:
6834 case R_PPC64_ADDR32
:
6835 case R_PPC64_UADDR16
:
6836 case R_PPC64_UADDR32
:
6837 case R_PPC64_UADDR64
:
6842 if (local_syms
!= NULL
)
6844 unsigned long r_symndx
;
6845 Elf_Internal_Sym
*sym
;
6846 bfd
*ibfd
= sec
->owner
;
6848 r_symndx
= ELF64_R_SYM (r_info
);
6849 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6854 && (must_be_dyn_reloc (info
, r_type
)
6857 || h
->root
.type
== bfd_link_hash_defweak
6858 || !h
->def_regular
))))
6859 || (ELIMINATE_COPY_RELOCS
6862 && (h
->root
.type
== bfd_link_hash_defweak
6863 || !h
->def_regular
)))
6869 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6872 if (sym_sec
!= NULL
)
6874 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6875 pp
= (struct ppc_dyn_relocs
**) vpp
;
6879 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6880 pp
= (struct ppc_dyn_relocs
**) vpp
;
6883 /* elf_gc_sweep may have already removed all dyn relocs associated
6884 with local syms for a given section. Don't report a dynreloc
6890 while ((p
= *pp
) != NULL
)
6894 if (!must_be_dyn_reloc (info
, r_type
))
6904 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6906 bfd_set_error (bfd_error_bad_value
);
6910 /* Remove unused Official Procedure Descriptor entries. Currently we
6911 only remove those associated with functions in discarded link-once
6912 sections, or weakly defined functions that have been overridden. It
6913 would be possible to remove many more entries for statically linked
6917 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6920 bfd_boolean some_edited
= FALSE
;
6921 asection
*need_pad
= NULL
;
6923 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6926 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6927 Elf_Internal_Shdr
*symtab_hdr
;
6928 Elf_Internal_Sym
*local_syms
;
6929 struct elf_link_hash_entry
**sym_hashes
;
6931 struct _opd_sec_data
*opd
;
6932 bfd_boolean need_edit
, add_aux_fields
;
6933 bfd_size_type cnt_16b
= 0;
6935 if (!is_ppc64_elf (ibfd
))
6938 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6939 if (sec
== NULL
|| sec
->size
== 0)
6942 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6945 if (sec
->output_section
== bfd_abs_section_ptr
)
6948 /* Look through the section relocs. */
6949 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6953 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6954 sym_hashes
= elf_sym_hashes (ibfd
);
6956 /* Read the relocations. */
6957 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6959 if (relstart
== NULL
)
6962 /* First run through the relocs to check they are sane, and to
6963 determine whether we need to edit this opd section. */
6967 relend
= relstart
+ sec
->reloc_count
;
6968 for (rel
= relstart
; rel
< relend
; )
6970 enum elf_ppc64_reloc_type r_type
;
6971 unsigned long r_symndx
;
6973 struct elf_link_hash_entry
*h
;
6974 Elf_Internal_Sym
*sym
;
6976 /* .opd contains a regular array of 16 or 24 byte entries. We're
6977 only interested in the reloc pointing to a function entry
6979 if (rel
->r_offset
!= offset
6980 || rel
+ 1 >= relend
6981 || (rel
+ 1)->r_offset
!= offset
+ 8)
6983 /* If someone messes with .opd alignment then after a
6984 "ld -r" we might have padding in the middle of .opd.
6985 Also, there's nothing to prevent someone putting
6986 something silly in .opd with the assembler. No .opd
6987 optimization for them! */
6989 (*_bfd_error_handler
)
6990 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6995 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6996 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6998 (*_bfd_error_handler
)
6999 (_("%B: unexpected reloc type %u in .opd section"),
7005 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7006 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7010 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7012 const char *sym_name
;
7014 sym_name
= h
->root
.root
.string
;
7016 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7019 (*_bfd_error_handler
)
7020 (_("%B: undefined sym `%s' in .opd section"),
7026 /* opd entries are always for functions defined in the
7027 current input bfd. If the symbol isn't defined in the
7028 input bfd, then we won't be using the function in this
7029 bfd; It must be defined in a linkonce section in another
7030 bfd, or is weak. It's also possible that we are
7031 discarding the function due to a linker script /DISCARD/,
7032 which we test for via the output_section. */
7033 if (sym_sec
->owner
!= ibfd
7034 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7039 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7041 if (sec
->size
== offset
+ 24)
7046 if (rel
== relend
&& sec
->size
== offset
+ 16)
7054 if (rel
->r_offset
== offset
+ 24)
7056 else if (rel
->r_offset
!= offset
+ 16)
7058 else if (rel
+ 1 < relend
7059 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7060 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7065 else if (rel
+ 2 < relend
7066 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7067 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7076 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7078 if (need_edit
|| add_aux_fields
)
7080 Elf_Internal_Rela
*write_rel
;
7081 bfd_byte
*rptr
, *wptr
;
7082 bfd_byte
*new_contents
;
7087 new_contents
= NULL
;
7088 amt
= sec
->size
* sizeof (long) / 8;
7089 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7090 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7091 if (opd
->adjust
== NULL
)
7093 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7095 /* This seems a waste of time as input .opd sections are all
7096 zeros as generated by gcc, but I suppose there's no reason
7097 this will always be so. We might start putting something in
7098 the third word of .opd entries. */
7099 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7102 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7107 if (local_syms
!= NULL
7108 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7110 if (elf_section_data (sec
)->relocs
!= relstart
)
7114 sec
->contents
= loc
;
7115 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7118 elf_section_data (sec
)->relocs
= relstart
;
7120 new_contents
= sec
->contents
;
7123 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7124 if (new_contents
== NULL
)
7128 wptr
= new_contents
;
7129 rptr
= sec
->contents
;
7131 write_rel
= relstart
;
7135 for (rel
= relstart
; rel
< relend
; rel
++)
7137 unsigned long r_symndx
;
7139 struct elf_link_hash_entry
*h
;
7140 Elf_Internal_Sym
*sym
;
7142 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7143 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7147 if (rel
->r_offset
== offset
)
7149 struct ppc_link_hash_entry
*fdh
= NULL
;
7151 /* See if the .opd entry is full 24 byte or
7152 16 byte (with fd_aux entry overlapped with next
7155 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7156 || (rel
+ 3 < relend
7157 && rel
[2].r_offset
== offset
+ 16
7158 && rel
[3].r_offset
== offset
+ 24
7159 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7160 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7164 && h
->root
.root
.string
[0] == '.')
7166 struct ppc_link_hash_table
*htab
;
7168 htab
= ppc_hash_table (info
);
7170 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7173 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7174 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7178 skip
= (sym_sec
->owner
!= ibfd
7179 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7182 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7184 /* Arrange for the function descriptor sym
7186 fdh
->elf
.root
.u
.def
.value
= 0;
7187 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7189 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7193 /* We'll be keeping this opd entry. */
7197 /* Redefine the function descriptor symbol to
7198 this location in the opd section. It is
7199 necessary to update the value here rather
7200 than using an array of adjustments as we do
7201 for local symbols, because various places
7202 in the generic ELF code use the value
7203 stored in u.def.value. */
7204 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7205 fdh
->adjust_done
= 1;
7208 /* Local syms are a bit tricky. We could
7209 tweak them as they can be cached, but
7210 we'd need to look through the local syms
7211 for the function descriptor sym which we
7212 don't have at the moment. So keep an
7213 array of adjustments. */
7214 opd
->adjust
[rel
->r_offset
/ 8]
7215 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7218 memcpy (wptr
, rptr
, opd_ent_size
);
7219 wptr
+= opd_ent_size
;
7220 if (add_aux_fields
&& opd_ent_size
== 16)
7222 memset (wptr
, '\0', 8);
7226 rptr
+= opd_ent_size
;
7227 offset
+= opd_ent_size
;
7233 && !info
->relocatable
7234 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7240 /* We need to adjust any reloc offsets to point to the
7241 new opd entries. While we're at it, we may as well
7242 remove redundant relocs. */
7243 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7244 if (write_rel
!= rel
)
7245 memcpy (write_rel
, rel
, sizeof (*rel
));
7250 sec
->size
= wptr
- new_contents
;
7251 sec
->reloc_count
= write_rel
- relstart
;
7254 free (sec
->contents
);
7255 sec
->contents
= new_contents
;
7258 /* Fudge the header size too, as this is used later in
7259 elf_bfd_final_link if we are emitting relocs. */
7260 elf_section_data (sec
)->rel_hdr
.sh_size
7261 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
7262 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
7265 else if (elf_section_data (sec
)->relocs
!= relstart
)
7268 if (local_syms
!= NULL
7269 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7271 if (!info
->keep_memory
)
7274 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7279 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7281 /* If we are doing a final link and the last .opd entry is just 16 byte
7282 long, add a 8 byte padding after it. */
7283 if (need_pad
!= NULL
&& !info
->relocatable
)
7287 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7289 BFD_ASSERT (need_pad
->size
> 0);
7291 p
= bfd_malloc (need_pad
->size
+ 8);
7295 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7296 p
, 0, need_pad
->size
))
7299 need_pad
->contents
= p
;
7300 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7304 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7308 need_pad
->contents
= p
;
7311 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7312 need_pad
->size
+= 8;
7318 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7321 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7322 int no_tls_get_addr_opt
,
7325 struct ppc_link_hash_table
*htab
;
7327 htab
= ppc_hash_table (info
);
7332 htab
->do_multi_toc
= 0;
7333 else if (!htab
->do_multi_toc
)
7336 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7337 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7338 FALSE
, FALSE
, TRUE
));
7339 /* Move dynamic linking info to the function descriptor sym. */
7340 if (htab
->tls_get_addr
!= NULL
)
7341 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7342 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7343 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7344 FALSE
, FALSE
, TRUE
));
7345 if (!no_tls_get_addr_opt
)
7347 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7349 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7350 FALSE
, FALSE
, TRUE
);
7352 func_desc_adjust (opt
, info
);
7353 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7354 FALSE
, FALSE
, TRUE
);
7356 && (opt_fd
->root
.type
== bfd_link_hash_defined
7357 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7359 /* If glibc supports an optimized __tls_get_addr call stub,
7360 signalled by the presence of __tls_get_addr_opt, and we'll
7361 be calling __tls_get_addr via a plt call stub, then
7362 make __tls_get_addr point to __tls_get_addr_opt. */
7363 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7364 if (htab
->elf
.dynamic_sections_created
7366 && (tga_fd
->type
== STT_FUNC
7367 || tga_fd
->needs_plt
)
7368 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7369 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7370 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7372 struct plt_entry
*ent
;
7374 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7375 if (ent
->plt
.refcount
> 0)
7379 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7380 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7381 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7382 if (opt_fd
->dynindx
!= -1)
7384 /* Use __tls_get_addr_opt in dynamic relocations. */
7385 opt_fd
->dynindx
= -1;
7386 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7387 opt_fd
->dynstr_index
);
7388 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7391 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7392 tga
= &htab
->tls_get_addr
->elf
;
7393 if (opt
!= NULL
&& tga
!= NULL
)
7395 tga
->root
.type
= bfd_link_hash_indirect
;
7396 tga
->root
.u
.i
.link
= &opt
->root
;
7397 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7398 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7400 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7402 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7403 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7404 if (htab
->tls_get_addr
!= NULL
)
7406 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7407 htab
->tls_get_addr
->is_func
= 1;
7413 no_tls_get_addr_opt
= TRUE
;
7415 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7416 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7419 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7423 branch_reloc_hash_match (const bfd
*ibfd
,
7424 const Elf_Internal_Rela
*rel
,
7425 const struct ppc_link_hash_entry
*hash1
,
7426 const struct ppc_link_hash_entry
*hash2
)
7428 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7429 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7430 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7432 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7434 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7435 struct elf_link_hash_entry
*h
;
7437 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7438 h
= elf_follow_link (h
);
7439 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7445 /* Run through all the TLS relocs looking for optimization
7446 opportunities. The linker has been hacked (see ppc64elf.em) to do
7447 a preliminary section layout so that we know the TLS segment
7448 offsets. We can't optimize earlier because some optimizations need
7449 to know the tp offset, and we need to optimize before allocating
7450 dynamic relocations. */
7453 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7457 struct ppc_link_hash_table
*htab
;
7460 if (info
->relocatable
|| !info
->executable
)
7463 htab
= ppc_hash_table (info
);
7467 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7469 Elf_Internal_Sym
*locsyms
= NULL
;
7470 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7471 unsigned char *toc_ref
= NULL
;
7473 /* Look at all the sections for this file. Make two passes over
7474 the relocs. On the first pass, mark toc entries involved
7475 with tls relocs, and check that tls relocs involved in
7476 setting up a tls_get_addr call are indeed followed by such a
7477 call. If they are not, exclude them from the optimizations
7478 done on the second pass. */
7479 for (pass
= 0; pass
< 2; ++pass
)
7480 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7481 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7483 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7485 /* Read the relocations. */
7486 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7488 if (relstart
== NULL
)
7491 relend
= relstart
+ sec
->reloc_count
;
7492 for (rel
= relstart
; rel
< relend
; rel
++)
7494 enum elf_ppc64_reloc_type r_type
;
7495 unsigned long r_symndx
;
7496 struct elf_link_hash_entry
*h
;
7497 Elf_Internal_Sym
*sym
;
7499 unsigned char *tls_mask
;
7500 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7502 bfd_boolean ok_tprel
, is_local
;
7503 long toc_ref_index
= 0;
7504 int expecting_tls_get_addr
= 0;
7506 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7507 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7511 if (elf_section_data (sec
)->relocs
!= relstart
)
7513 if (toc_ref
!= NULL
)
7516 && (elf_symtab_hdr (ibfd
).contents
7517 != (unsigned char *) locsyms
))
7524 if (h
->root
.type
== bfd_link_hash_defined
7525 || h
->root
.type
== bfd_link_hash_defweak
)
7526 value
= h
->root
.u
.def
.value
;
7527 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7533 /* Symbols referenced by TLS relocs must be of type
7534 STT_TLS. So no need for .opd local sym adjust. */
7535 value
= sym
->st_value
;
7544 && h
->root
.type
== bfd_link_hash_undefweak
)
7548 value
+= sym_sec
->output_offset
;
7549 value
+= sym_sec
->output_section
->vma
;
7550 value
-= htab
->elf
.tls_sec
->vma
;
7551 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7552 < (bfd_vma
) 1 << 32);
7556 r_type
= ELF64_R_TYPE (rel
->r_info
);
7559 case R_PPC64_GOT_TLSLD16
:
7560 case R_PPC64_GOT_TLSLD16_LO
:
7561 expecting_tls_get_addr
= 1;
7564 case R_PPC64_GOT_TLSLD16_HI
:
7565 case R_PPC64_GOT_TLSLD16_HA
:
7566 /* These relocs should never be against a symbol
7567 defined in a shared lib. Leave them alone if
7568 that turns out to be the case. */
7575 tls_type
= TLS_TLS
| TLS_LD
;
7578 case R_PPC64_GOT_TLSGD16
:
7579 case R_PPC64_GOT_TLSGD16_LO
:
7580 expecting_tls_get_addr
= 1;
7583 case R_PPC64_GOT_TLSGD16_HI
:
7584 case R_PPC64_GOT_TLSGD16_HA
:
7590 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7592 tls_type
= TLS_TLS
| TLS_GD
;
7595 case R_PPC64_GOT_TPREL16_DS
:
7596 case R_PPC64_GOT_TPREL16_LO_DS
:
7597 case R_PPC64_GOT_TPREL16_HI
:
7598 case R_PPC64_GOT_TPREL16_HA
:
7603 tls_clear
= TLS_TPREL
;
7604 tls_type
= TLS_TLS
| TLS_TPREL
;
7610 case R_PPC64_TOC16_LO
:
7614 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7617 /* Mark this toc entry as referenced by a TLS
7618 code sequence. We can do that now in the
7619 case of R_PPC64_TLS, and after checking for
7620 tls_get_addr for the TOC16 relocs. */
7621 if (toc_ref
== NULL
)
7623 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7624 if (toc_ref
== NULL
)
7628 value
= h
->root
.u
.def
.value
;
7630 value
= sym
->st_value
;
7631 value
+= rel
->r_addend
;
7632 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7633 toc_ref_index
= value
/ 8;
7634 if (r_type
== R_PPC64_TLS
7635 || r_type
== R_PPC64_TLSGD
7636 || r_type
== R_PPC64_TLSLD
)
7638 toc_ref
[toc_ref_index
] = 1;
7642 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7647 expecting_tls_get_addr
= 2;
7650 case R_PPC64_TPREL64
:
7654 || !toc_ref
[rel
->r_offset
/ 8])
7659 tls_set
= TLS_EXPLICIT
;
7660 tls_clear
= TLS_TPREL
;
7665 case R_PPC64_DTPMOD64
:
7669 || !toc_ref
[rel
->r_offset
/ 8])
7671 if (rel
+ 1 < relend
7673 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7674 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7678 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7681 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7690 tls_set
= TLS_EXPLICIT
;
7701 if (!expecting_tls_get_addr
7702 || !sec
->has_tls_get_addr_call
)
7705 if (rel
+ 1 < relend
7706 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7708 htab
->tls_get_addr_fd
))
7710 if (expecting_tls_get_addr
== 2)
7712 /* Check for toc tls entries. */
7713 unsigned char *toc_tls
;
7716 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7721 if (retval
> 1 && toc_tls
!= NULL
)
7722 toc_ref
[toc_ref_index
] = 1;
7727 if (expecting_tls_get_addr
!= 1)
7730 /* Uh oh, we didn't find the expected call. We
7731 could just mark this symbol to exclude it
7732 from tls optimization but it's safer to skip
7733 the entire section. */
7734 sec
->has_tls_reloc
= 0;
7738 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7740 struct plt_entry
*ent
;
7741 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7744 if (ent
->addend
== 0)
7746 if (ent
->plt
.refcount
> 0)
7748 ent
->plt
.refcount
-= 1;
7749 expecting_tls_get_addr
= 0;
7755 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7757 struct plt_entry
*ent
;
7758 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7761 if (ent
->addend
== 0)
7763 if (ent
->plt
.refcount
> 0)
7764 ent
->plt
.refcount
-= 1;
7772 if ((tls_set
& TLS_EXPLICIT
) == 0)
7774 struct got_entry
*ent
;
7776 /* Adjust got entry for this reloc. */
7780 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7782 for (; ent
!= NULL
; ent
= ent
->next
)
7783 if (ent
->addend
== rel
->r_addend
7784 && ent
->owner
== ibfd
7785 && ent
->tls_type
== tls_type
)
7792 /* We managed to get rid of a got entry. */
7793 if (ent
->got
.refcount
> 0)
7794 ent
->got
.refcount
-= 1;
7799 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7800 we'll lose one or two dyn relocs. */
7801 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7805 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7807 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7813 *tls_mask
|= tls_set
;
7814 *tls_mask
&= ~tls_clear
;
7817 if (elf_section_data (sec
)->relocs
!= relstart
)
7821 if (toc_ref
!= NULL
)
7825 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7827 if (!info
->keep_memory
)
7830 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7836 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7837 the values of any global symbols in a toc section that has been
7838 edited. Globals in toc sections should be a rarity, so this function
7839 sets a flag if any are found in toc sections other than the one just
7840 edited, so that futher hash table traversals can be avoided. */
7842 struct adjust_toc_info
7845 unsigned long *skip
;
7846 bfd_boolean global_toc_syms
;
7850 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7852 struct ppc_link_hash_entry
*eh
;
7853 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7856 if (h
->root
.type
== bfd_link_hash_indirect
)
7859 if (h
->root
.type
== bfd_link_hash_warning
)
7860 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7862 if (h
->root
.type
!= bfd_link_hash_defined
7863 && h
->root
.type
!= bfd_link_hash_defweak
)
7866 eh
= (struct ppc_link_hash_entry
*) h
;
7867 if (eh
->adjust_done
)
7870 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7872 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7873 i
= toc_inf
->toc
->rawsize
>> 3;
7875 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7877 if (toc_inf
->skip
[i
] == (unsigned long) -1)
7879 (*_bfd_error_handler
)
7880 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7883 while (toc_inf
->skip
[i
] == (unsigned long) -1);
7884 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7887 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7888 eh
->adjust_done
= 1;
7890 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7891 toc_inf
->global_toc_syms
= TRUE
;
7896 /* Examine all relocs referencing .toc sections in order to remove
7897 unused .toc entries. */
7900 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7903 struct adjust_toc_info toc_inf
;
7904 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7906 htab
->do_toc_opt
= 1;
7907 toc_inf
.global_toc_syms
= TRUE
;
7908 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7910 asection
*toc
, *sec
;
7911 Elf_Internal_Shdr
*symtab_hdr
;
7912 Elf_Internal_Sym
*local_syms
;
7913 struct elf_link_hash_entry
**sym_hashes
;
7914 Elf_Internal_Rela
*relstart
, *rel
;
7915 unsigned long *skip
, *drop
;
7916 unsigned char *used
;
7917 unsigned char *keep
, last
, some_unused
;
7919 if (!is_ppc64_elf (ibfd
))
7922 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7925 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7926 || elf_discarded_section (toc
))
7930 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7931 sym_hashes
= elf_sym_hashes (ibfd
);
7933 /* Look at sections dropped from the final link. */
7936 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7938 if (sec
->reloc_count
== 0
7939 || !elf_discarded_section (sec
)
7940 || get_opd_info (sec
)
7941 || (sec
->flags
& SEC_ALLOC
) == 0
7942 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7945 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7946 if (relstart
== NULL
)
7949 /* Run through the relocs to see which toc entries might be
7951 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7953 enum elf_ppc64_reloc_type r_type
;
7954 unsigned long r_symndx
;
7956 struct elf_link_hash_entry
*h
;
7957 Elf_Internal_Sym
*sym
;
7960 r_type
= ELF64_R_TYPE (rel
->r_info
);
7967 case R_PPC64_TOC16_LO
:
7968 case R_PPC64_TOC16_HI
:
7969 case R_PPC64_TOC16_HA
:
7970 case R_PPC64_TOC16_DS
:
7971 case R_PPC64_TOC16_LO_DS
:
7975 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7976 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7984 val
= h
->root
.u
.def
.value
;
7986 val
= sym
->st_value
;
7987 val
+= rel
->r_addend
;
7989 if (val
>= toc
->size
)
7992 /* Anything in the toc ought to be aligned to 8 bytes.
7993 If not, don't mark as unused. */
7999 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8007 if (elf_section_data (sec
)->relocs
!= relstart
)
8014 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8018 if (local_syms
!= NULL
8019 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8023 && elf_section_data (sec
)->relocs
!= relstart
)
8030 /* Now check all kept sections that might reference the toc.
8031 Check the toc itself last. */
8032 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8035 sec
= (sec
== toc
? NULL
8036 : sec
->next
== NULL
? toc
8037 : sec
->next
== toc
&& toc
->next
? toc
->next
8042 if (sec
->reloc_count
== 0
8043 || elf_discarded_section (sec
)
8044 || get_opd_info (sec
)
8045 || (sec
->flags
& SEC_ALLOC
) == 0
8046 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8049 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8051 if (relstart
== NULL
)
8054 /* Mark toc entries referenced as used. */
8057 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8059 enum elf_ppc64_reloc_type r_type
;
8060 unsigned long r_symndx
;
8062 struct elf_link_hash_entry
*h
;
8063 Elf_Internal_Sym
*sym
;
8066 r_type
= ELF64_R_TYPE (rel
->r_info
);
8070 case R_PPC64_TOC16_LO
:
8071 case R_PPC64_TOC16_HI
:
8072 case R_PPC64_TOC16_HA
:
8073 case R_PPC64_TOC16_DS
:
8074 case R_PPC64_TOC16_LO_DS
:
8075 /* In case we're taking addresses of toc entries. */
8076 case R_PPC64_ADDR64
:
8083 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8084 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8095 val
= h
->root
.u
.def
.value
;
8097 val
= sym
->st_value
;
8098 val
+= rel
->r_addend
;
8100 if (val
>= toc
->size
)
8103 /* For the toc section, we only mark as used if
8104 this entry itself isn't unused. */
8107 && (used
[rel
->r_offset
>> 3]
8108 || !skip
[rel
->r_offset
>> 3]))
8109 /* Do all the relocs again, to catch reference
8117 if (elf_section_data (sec
)->relocs
!= relstart
)
8121 /* Merge the used and skip arrays. Assume that TOC
8122 doublewords not appearing as either used or unused belong
8123 to to an entry more than one doubleword in size. */
8124 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8125 drop
< skip
+ (toc
->size
+ 7) / 8;
8146 bfd_byte
*contents
, *src
;
8149 /* Shuffle the toc contents, and at the same time convert the
8150 skip array from booleans into offsets. */
8151 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8154 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8156 for (src
= contents
, off
= 0, drop
= skip
;
8157 src
< contents
+ toc
->size
;
8162 *drop
= (unsigned long) -1;
8168 memcpy (src
- off
, src
, 8);
8172 toc
->rawsize
= toc
->size
;
8173 toc
->size
= src
- contents
- off
;
8175 /* Adjust addends for relocs against the toc section sym. */
8176 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8178 if (sec
->reloc_count
== 0
8179 || elf_discarded_section (sec
))
8182 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8184 if (relstart
== NULL
)
8187 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8189 enum elf_ppc64_reloc_type r_type
;
8190 unsigned long r_symndx
;
8192 struct elf_link_hash_entry
*h
;
8193 Elf_Internal_Sym
*sym
;
8196 r_type
= ELF64_R_TYPE (rel
->r_info
);
8203 case R_PPC64_TOC16_LO
:
8204 case R_PPC64_TOC16_HI
:
8205 case R_PPC64_TOC16_HA
:
8206 case R_PPC64_TOC16_DS
:
8207 case R_PPC64_TOC16_LO_DS
:
8208 case R_PPC64_ADDR64
:
8212 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8213 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8217 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
8220 val
= rel
->r_addend
;
8222 if (val
> toc
->rawsize
)
8225 rel
->r_addend
-= skip
[val
>> 3];
8226 elf_section_data (sec
)->relocs
= relstart
;
8229 if (elf_section_data (sec
)->relocs
!= relstart
)
8233 /* We shouldn't have local or global symbols defined in the TOC,
8234 but handle them anyway. */
8235 if (local_syms
!= NULL
)
8237 Elf_Internal_Sym
*sym
;
8239 for (sym
= local_syms
;
8240 sym
< local_syms
+ symtab_hdr
->sh_info
;
8242 if (sym
->st_value
!= 0
8243 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8247 if (sym
->st_value
> toc
->rawsize
)
8248 i
= toc
->rawsize
>> 3;
8250 i
= sym
->st_value
>> 3;
8252 if (skip
[sym
->st_value
>> 3] == (unsigned long) -1)
8254 (*_bfd_error_handler
)
8255 (_("%s defined on removed toc entry"),
8256 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8259 while (skip
[i
] == (unsigned long) -1);
8260 sym
->st_value
= (bfd_vma
) i
<< 3;
8263 sym
->st_value
-= skip
[i
];
8264 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8268 /* Adjust any global syms defined in this toc input section. */
8269 if (toc_inf
.global_toc_syms
)
8272 toc_inf
.skip
= skip
;
8273 toc_inf
.global_toc_syms
= FALSE
;
8274 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8278 if (toc
->reloc_count
!= 0)
8280 Elf_Internal_Rela
*wrel
;
8283 /* Read toc relocs. */
8284 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8286 if (relstart
== NULL
)
8289 /* Remove unused toc relocs, and adjust those we keep. */
8291 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
8292 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
8294 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8295 wrel
->r_info
= rel
->r_info
;
8296 wrel
->r_addend
= rel
->r_addend
;
8299 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8300 &local_syms
, NULL
, NULL
))
8303 toc
->reloc_count
= wrel
- relstart
;
8304 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
8305 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
8306 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
8310 if (local_syms
!= NULL
8311 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8313 if (!info
->keep_memory
)
8316 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8324 /* Return true iff input section I references the TOC using
8325 instructions limited to +/-32k offsets. */
8328 ppc64_elf_has_small_toc_reloc (asection
*i
)
8330 return (is_ppc64_elf (i
->owner
)
8331 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8334 /* Allocate space for one GOT entry. */
8337 allocate_got (struct elf_link_hash_entry
*h
,
8338 struct bfd_link_info
*info
,
8339 struct got_entry
*gent
)
8341 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8343 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8344 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8346 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8347 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8348 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8350 gent
->got
.offset
= got
->size
;
8351 got
->size
+= entsize
;
8353 dyn
= htab
->elf
.dynamic_sections_created
;
8355 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8356 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8357 || h
->root
.type
!= bfd_link_hash_undefweak
))
8359 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8360 relgot
->size
+= rentsize
;
8362 else if (h
->type
== STT_GNU_IFUNC
)
8364 asection
*relgot
= htab
->reliplt
;
8365 relgot
->size
+= rentsize
;
8366 htab
->got_reli_size
+= rentsize
;
8370 /* This function merges got entries in the same toc group. */
8373 merge_got_entries (struct got_entry
**pent
)
8375 struct got_entry
*ent
, *ent2
;
8377 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8378 if (!ent
->is_indirect
)
8379 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8380 if (!ent2
->is_indirect
8381 && ent2
->addend
== ent
->addend
8382 && ent2
->tls_type
== ent
->tls_type
8383 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8385 ent2
->is_indirect
= TRUE
;
8386 ent2
->got
.ent
= ent
;
8390 /* Allocate space in .plt, .got and associated reloc sections for
8394 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8396 struct bfd_link_info
*info
;
8397 struct ppc_link_hash_table
*htab
;
8399 struct ppc_link_hash_entry
*eh
;
8400 struct ppc_dyn_relocs
*p
;
8401 struct got_entry
**pgent
, *gent
;
8403 if (h
->root
.type
== bfd_link_hash_indirect
)
8406 if (h
->root
.type
== bfd_link_hash_warning
)
8407 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8409 info
= (struct bfd_link_info
*) inf
;
8410 htab
= ppc_hash_table (info
);
8414 if ((htab
->elf
.dynamic_sections_created
8416 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8417 || h
->type
== STT_GNU_IFUNC
)
8419 struct plt_entry
*pent
;
8420 bfd_boolean doneone
= FALSE
;
8421 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8422 if (pent
->plt
.refcount
> 0)
8424 if (!htab
->elf
.dynamic_sections_created
8425 || h
->dynindx
== -1)
8428 pent
->plt
.offset
= s
->size
;
8429 s
->size
+= PLT_ENTRY_SIZE
;
8434 /* If this is the first .plt entry, make room for the special
8438 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8440 pent
->plt
.offset
= s
->size
;
8442 /* Make room for this entry. */
8443 s
->size
+= PLT_ENTRY_SIZE
;
8445 /* Make room for the .glink code. */
8448 s
->size
+= GLINK_CALL_STUB_SIZE
;
8449 /* We need bigger stubs past index 32767. */
8450 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8454 /* We also need to make an entry in the .rela.plt section. */
8457 s
->size
+= sizeof (Elf64_External_Rela
);
8461 pent
->plt
.offset
= (bfd_vma
) -1;
8464 h
->plt
.plist
= NULL
;
8470 h
->plt
.plist
= NULL
;
8474 eh
= (struct ppc_link_hash_entry
*) h
;
8475 /* Run through the TLS GD got entries first if we're changing them
8477 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8478 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8479 if (gent
->got
.refcount
> 0
8480 && (gent
->tls_type
& TLS_GD
) != 0)
8482 /* This was a GD entry that has been converted to TPREL. If
8483 there happens to be a TPREL entry we can use that one. */
8484 struct got_entry
*ent
;
8485 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8486 if (ent
->got
.refcount
> 0
8487 && (ent
->tls_type
& TLS_TPREL
) != 0
8488 && ent
->addend
== gent
->addend
8489 && ent
->owner
== gent
->owner
)
8491 gent
->got
.refcount
= 0;
8495 /* If not, then we'll be using our own TPREL entry. */
8496 if (gent
->got
.refcount
!= 0)
8497 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8500 /* Remove any list entry that won't generate a word in the GOT before
8501 we call merge_got_entries. Otherwise we risk merging to empty
8503 pgent
= &h
->got
.glist
;
8504 while ((gent
= *pgent
) != NULL
)
8505 if (gent
->got
.refcount
> 0)
8507 if ((gent
->tls_type
& TLS_LD
) != 0
8510 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8511 *pgent
= gent
->next
;
8514 pgent
= &gent
->next
;
8517 *pgent
= gent
->next
;
8519 if (!htab
->do_multi_toc
)
8520 merge_got_entries (&h
->got
.glist
);
8522 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8523 if (!gent
->is_indirect
)
8525 /* Make sure this symbol is output as a dynamic symbol.
8526 Undefined weak syms won't yet be marked as dynamic,
8527 nor will all TLS symbols. */
8528 if (h
->dynindx
== -1
8530 && h
->type
!= STT_GNU_IFUNC
8531 && htab
->elf
.dynamic_sections_created
)
8533 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8537 if (!is_ppc64_elf (gent
->owner
))
8540 allocate_got (h
, info
, gent
);
8543 if (eh
->dyn_relocs
== NULL
8544 || (!htab
->elf
.dynamic_sections_created
8545 && h
->type
!= STT_GNU_IFUNC
))
8548 /* In the shared -Bsymbolic case, discard space allocated for
8549 dynamic pc-relative relocs against symbols which turn out to be
8550 defined in regular objects. For the normal shared case, discard
8551 space for relocs that have become local due to symbol visibility
8556 /* Relocs that use pc_count are those that appear on a call insn,
8557 or certain REL relocs (see must_be_dyn_reloc) that can be
8558 generated via assembly. We want calls to protected symbols to
8559 resolve directly to the function rather than going via the plt.
8560 If people want function pointer comparisons to work as expected
8561 then they should avoid writing weird assembly. */
8562 if (SYMBOL_CALLS_LOCAL (info
, h
))
8564 struct ppc_dyn_relocs
**pp
;
8566 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8568 p
->count
-= p
->pc_count
;
8577 /* Also discard relocs on undefined weak syms with non-default
8579 if (eh
->dyn_relocs
!= NULL
8580 && h
->root
.type
== bfd_link_hash_undefweak
)
8582 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8583 eh
->dyn_relocs
= NULL
;
8585 /* Make sure this symbol is output as a dynamic symbol.
8586 Undefined weak syms won't yet be marked as dynamic. */
8587 else if (h
->dynindx
== -1
8588 && !h
->forced_local
)
8590 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8595 else if (h
->type
== STT_GNU_IFUNC
)
8597 if (!h
->non_got_ref
)
8598 eh
->dyn_relocs
= NULL
;
8600 else if (ELIMINATE_COPY_RELOCS
)
8602 /* For the non-shared case, discard space for relocs against
8603 symbols which turn out to need copy relocs or are not
8609 /* Make sure this symbol is output as a dynamic symbol.
8610 Undefined weak syms won't yet be marked as dynamic. */
8611 if (h
->dynindx
== -1
8612 && !h
->forced_local
)
8614 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8618 /* If that succeeded, we know we'll be keeping all the
8620 if (h
->dynindx
!= -1)
8624 eh
->dyn_relocs
= NULL
;
8629 /* Finally, allocate space. */
8630 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8632 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8633 if (!htab
->elf
.dynamic_sections_created
)
8634 sreloc
= htab
->reliplt
;
8635 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8641 /* Find any dynamic relocs that apply to read-only sections. */
8644 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8646 struct ppc_link_hash_entry
*eh
;
8647 struct ppc_dyn_relocs
*p
;
8649 if (h
->root
.type
== bfd_link_hash_warning
)
8650 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8652 eh
= (struct ppc_link_hash_entry
*) h
;
8653 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8655 asection
*s
= p
->sec
->output_section
;
8657 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8659 struct bfd_link_info
*info
= inf
;
8661 info
->flags
|= DF_TEXTREL
;
8663 /* Not an error, just cut short the traversal. */
8670 /* Set the sizes of the dynamic sections. */
8673 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8674 struct bfd_link_info
*info
)
8676 struct ppc_link_hash_table
*htab
;
8681 struct got_entry
*first_tlsld
;
8683 htab
= ppc_hash_table (info
);
8687 dynobj
= htab
->elf
.dynobj
;
8691 if (htab
->elf
.dynamic_sections_created
)
8693 /* Set the contents of the .interp section to the interpreter. */
8694 if (info
->executable
)
8696 s
= bfd_get_section_by_name (dynobj
, ".interp");
8699 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8700 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8704 /* Set up .got offsets for local syms, and space for local dynamic
8706 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8708 struct got_entry
**lgot_ents
;
8709 struct got_entry
**end_lgot_ents
;
8710 struct plt_entry
**local_plt
;
8711 struct plt_entry
**end_local_plt
;
8712 unsigned char *lgot_masks
;
8713 bfd_size_type locsymcount
;
8714 Elf_Internal_Shdr
*symtab_hdr
;
8717 if (!is_ppc64_elf (ibfd
))
8720 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8722 struct ppc_dyn_relocs
*p
;
8724 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8726 if (!bfd_is_abs_section (p
->sec
)
8727 && bfd_is_abs_section (p
->sec
->output_section
))
8729 /* Input section has been discarded, either because
8730 it is a copy of a linkonce section or due to
8731 linker script /DISCARD/, so we'll be discarding
8734 else if (p
->count
!= 0)
8736 srel
= elf_section_data (p
->sec
)->sreloc
;
8737 if (!htab
->elf
.dynamic_sections_created
)
8738 srel
= htab
->reliplt
;
8739 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8740 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8741 info
->flags
|= DF_TEXTREL
;
8746 lgot_ents
= elf_local_got_ents (ibfd
);
8750 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8751 locsymcount
= symtab_hdr
->sh_info
;
8752 end_lgot_ents
= lgot_ents
+ locsymcount
;
8753 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8754 end_local_plt
= local_plt
+ locsymcount
;
8755 lgot_masks
= (unsigned char *) end_local_plt
;
8756 s
= ppc64_elf_tdata (ibfd
)->got
;
8757 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8758 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8760 struct got_entry
**pent
, *ent
;
8763 while ((ent
= *pent
) != NULL
)
8764 if (ent
->got
.refcount
> 0)
8766 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8768 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8773 unsigned int num
= 1;
8774 ent
->got
.offset
= s
->size
;
8775 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8779 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8780 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8783 += num
* sizeof (Elf64_External_Rela
);
8785 += num
* sizeof (Elf64_External_Rela
);
8794 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8795 for (; local_plt
< end_local_plt
; ++local_plt
)
8797 struct plt_entry
*ent
;
8799 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8800 if (ent
->plt
.refcount
> 0)
8803 ent
->plt
.offset
= s
->size
;
8804 s
->size
+= PLT_ENTRY_SIZE
;
8806 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8809 ent
->plt
.offset
= (bfd_vma
) -1;
8813 /* Allocate global sym .plt and .got entries, and space for global
8814 sym dynamic relocs. */
8815 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8818 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8820 struct got_entry
*ent
;
8822 if (!is_ppc64_elf (ibfd
))
8825 ent
= ppc64_tlsld_got (ibfd
);
8826 if (ent
->got
.refcount
> 0)
8828 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
8830 ent
->is_indirect
= TRUE
;
8831 ent
->got
.ent
= first_tlsld
;
8835 if (first_tlsld
== NULL
)
8837 s
= ppc64_elf_tdata (ibfd
)->got
;
8838 ent
->got
.offset
= s
->size
;
8843 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8844 srel
->size
+= sizeof (Elf64_External_Rela
);
8849 ent
->got
.offset
= (bfd_vma
) -1;
8852 /* We now have determined the sizes of the various dynamic sections.
8853 Allocate memory for them. */
8855 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8857 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8860 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
8861 /* These haven't been allocated yet; don't strip. */
8863 else if (s
== htab
->got
8867 || s
== htab
->dynbss
)
8869 /* Strip this section if we don't need it; see the
8872 else if (CONST_STRNEQ (s
->name
, ".rela"))
8876 if (s
!= htab
->relplt
)
8879 /* We use the reloc_count field as a counter if we need
8880 to copy relocs into the output file. */
8886 /* It's not one of our sections, so don't allocate space. */
8892 /* If we don't need this section, strip it from the
8893 output file. This is mostly to handle .rela.bss and
8894 .rela.plt. We must create both sections in
8895 create_dynamic_sections, because they must be created
8896 before the linker maps input sections to output
8897 sections. The linker does that before
8898 adjust_dynamic_symbol is called, and it is that
8899 function which decides whether anything needs to go
8900 into these sections. */
8901 s
->flags
|= SEC_EXCLUDE
;
8905 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8908 /* Allocate memory for the section contents. We use bfd_zalloc
8909 here in case unused entries are not reclaimed before the
8910 section's contents are written out. This should not happen,
8911 but this way if it does we get a R_PPC64_NONE reloc in .rela
8912 sections instead of garbage.
8913 We also rely on the section contents being zero when writing
8915 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8916 if (s
->contents
== NULL
)
8920 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8922 if (!is_ppc64_elf (ibfd
))
8925 s
= ppc64_elf_tdata (ibfd
)->got
;
8926 if (s
!= NULL
&& s
!= htab
->got
)
8929 s
->flags
|= SEC_EXCLUDE
;
8932 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8933 if (s
->contents
== NULL
)
8937 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8941 s
->flags
|= SEC_EXCLUDE
;
8944 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8945 if (s
->contents
== NULL
)
8953 if (htab
->elf
.dynamic_sections_created
)
8955 /* Add some entries to the .dynamic section. We fill in the
8956 values later, in ppc64_elf_finish_dynamic_sections, but we
8957 must add the entries now so that we get the correct size for
8958 the .dynamic section. The DT_DEBUG entry is filled in by the
8959 dynamic linker and used by the debugger. */
8960 #define add_dynamic_entry(TAG, VAL) \
8961 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8963 if (info
->executable
)
8965 if (!add_dynamic_entry (DT_DEBUG
, 0))
8969 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8971 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8972 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8973 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8974 || !add_dynamic_entry (DT_JMPREL
, 0)
8975 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8981 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8982 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8986 if (!htab
->no_tls_get_addr_opt
8987 && htab
->tls_get_addr_fd
!= NULL
8988 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
8989 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
8994 if (!add_dynamic_entry (DT_RELA
, 0)
8995 || !add_dynamic_entry (DT_RELASZ
, 0)
8996 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8999 /* If any dynamic relocs apply to a read-only section,
9000 then we need a DT_TEXTREL entry. */
9001 if ((info
->flags
& DF_TEXTREL
) == 0)
9002 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9004 if ((info
->flags
& DF_TEXTREL
) != 0)
9006 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9011 #undef add_dynamic_entry
9016 /* Determine the type of stub needed, if any, for a call. */
9018 static inline enum ppc_stub_type
9019 ppc_type_of_stub (asection
*input_sec
,
9020 const Elf_Internal_Rela
*rel
,
9021 struct ppc_link_hash_entry
**hash
,
9022 struct plt_entry
**plt_ent
,
9023 bfd_vma destination
)
9025 struct ppc_link_hash_entry
*h
= *hash
;
9027 bfd_vma branch_offset
;
9028 bfd_vma max_branch_offset
;
9029 enum elf_ppc64_reloc_type r_type
;
9033 struct plt_entry
*ent
;
9034 struct ppc_link_hash_entry
*fdh
= h
;
9036 && h
->oh
->is_func_descriptor
)
9038 fdh
= ppc_follow_link (h
->oh
);
9042 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9043 if (ent
->addend
== rel
->r_addend
9044 && ent
->plt
.offset
!= (bfd_vma
) -1)
9047 return ppc_stub_plt_call
;
9050 /* Here, we know we don't have a plt entry. If we don't have a
9051 either a defined function descriptor or a defined entry symbol
9052 in a regular object file, then it is pointless trying to make
9053 any other type of stub. */
9054 if (!is_static_defined (&fdh
->elf
)
9055 && !is_static_defined (&h
->elf
))
9056 return ppc_stub_none
;
9058 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9060 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9061 struct plt_entry
**local_plt
= (struct plt_entry
**)
9062 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9063 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9065 if (local_plt
[r_symndx
] != NULL
)
9067 struct plt_entry
*ent
;
9069 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9070 if (ent
->addend
== rel
->r_addend
9071 && ent
->plt
.offset
!= (bfd_vma
) -1)
9074 return ppc_stub_plt_call
;
9079 /* Determine where the call point is. */
9080 location
= (input_sec
->output_offset
9081 + input_sec
->output_section
->vma
9084 branch_offset
= destination
- location
;
9085 r_type
= ELF64_R_TYPE (rel
->r_info
);
9087 /* Determine if a long branch stub is needed. */
9088 max_branch_offset
= 1 << 25;
9089 if (r_type
!= R_PPC64_REL24
)
9090 max_branch_offset
= 1 << 15;
9092 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9093 /* We need a stub. Figure out whether a long_branch or plt_branch
9095 return ppc_stub_long_branch
;
9097 return ppc_stub_none
;
9100 /* Build a .plt call stub. */
9102 static inline bfd_byte
*
9103 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9105 #define PPC_LO(v) ((v) & 0xffff)
9106 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9107 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9109 if (PPC_HA (offset
) != 0)
9113 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9114 r
[1].r_offset
= r
[0].r_offset
+ 8;
9115 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9116 r
[1].r_addend
= r
[0].r_addend
;
9117 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9119 r
[2].r_offset
= r
[1].r_offset
+ 4;
9120 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9121 r
[2].r_addend
= r
[0].r_addend
;
9125 r
[2].r_offset
= r
[1].r_offset
+ 8;
9126 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9127 r
[2].r_addend
= r
[0].r_addend
+ 8;
9128 r
[3].r_offset
= r
[2].r_offset
+ 4;
9129 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9130 r
[3].r_addend
= r
[0].r_addend
+ 16;
9133 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9134 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9135 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9136 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9138 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9141 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9142 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9143 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9144 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9151 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9152 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9154 r
[1].r_offset
= r
[0].r_offset
+ 4;
9155 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9156 r
[1].r_addend
= r
[0].r_addend
;
9160 r
[1].r_offset
= r
[0].r_offset
+ 8;
9161 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9162 r
[1].r_addend
= r
[0].r_addend
+ 16;
9163 r
[2].r_offset
= r
[1].r_offset
+ 4;
9164 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9165 r
[2].r_addend
= r
[0].r_addend
+ 8;
9168 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9169 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9170 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9172 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9175 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9176 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9177 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9178 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9183 /* Build a special .plt call stub for __tls_get_addr. */
9185 #define LD_R11_0R3 0xe9630000
9186 #define LD_R12_0R3 0xe9830000
9187 #define MR_R0_R3 0x7c601b78
9188 #define CMPDI_R11_0 0x2c2b0000
9189 #define ADD_R3_R12_R13 0x7c6c6a14
9190 #define BEQLR 0x4d820020
9191 #define MR_R3_R0 0x7c030378
9192 #define MFLR_R11 0x7d6802a6
9193 #define STD_R11_0R1 0xf9610000
9194 #define BCTRL 0x4e800421
9195 #define LD_R11_0R1 0xe9610000
9196 #define LD_R2_0R1 0xe8410000
9197 #define MTLR_R11 0x7d6803a6
9199 static inline bfd_byte
*
9200 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9201 Elf_Internal_Rela
*r
)
9203 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9204 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9205 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9206 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9207 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9208 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9209 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9210 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9211 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9214 r
[0].r_offset
+= 9 * 4;
9215 p
= build_plt_stub (obfd
, p
, offset
, r
);
9216 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9218 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9219 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9220 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9221 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9226 static Elf_Internal_Rela
*
9227 get_relocs (asection
*sec
, int count
)
9229 Elf_Internal_Rela
*relocs
;
9230 struct bfd_elf_section_data
*elfsec_data
;
9232 elfsec_data
= elf_section_data (sec
);
9233 relocs
= elfsec_data
->relocs
;
9236 bfd_size_type relsize
;
9237 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9238 relocs
= bfd_alloc (sec
->owner
, relsize
);
9241 elfsec_data
->relocs
= relocs
;
9242 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
9243 * sizeof (Elf64_External_Rela
));
9244 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
9245 sec
->reloc_count
= 0;
9247 relocs
+= sec
->reloc_count
;
9248 sec
->reloc_count
+= count
;
9253 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9255 struct ppc_stub_hash_entry
*stub_entry
;
9256 struct ppc_branch_hash_entry
*br_entry
;
9257 struct bfd_link_info
*info
;
9258 struct ppc_link_hash_table
*htab
;
9263 Elf_Internal_Rela
*r
;
9266 /* Massage our args to the form they really have. */
9267 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9270 htab
= ppc_hash_table (info
);
9274 /* Make a note of the offset within the stubs for this entry. */
9275 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9276 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9278 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9279 switch (stub_entry
->stub_type
)
9281 case ppc_stub_long_branch
:
9282 case ppc_stub_long_branch_r2off
:
9283 /* Branches are relative. This is where we are going to. */
9284 off
= dest
= (stub_entry
->target_value
9285 + stub_entry
->target_section
->output_offset
9286 + stub_entry
->target_section
->output_section
->vma
);
9288 /* And this is where we are coming from. */
9289 off
-= (stub_entry
->stub_offset
9290 + stub_entry
->stub_sec
->output_offset
9291 + stub_entry
->stub_sec
->output_section
->vma
);
9294 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9298 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9299 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9300 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9303 if (PPC_HA (r2off
) != 0)
9306 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9309 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9313 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9315 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9317 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9318 stub_entry
->root
.string
);
9319 htab
->stub_error
= TRUE
;
9323 if (info
->emitrelocations
)
9325 r
= get_relocs (stub_entry
->stub_sec
, 1);
9328 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9329 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9331 if (stub_entry
->h
!= NULL
)
9333 struct elf_link_hash_entry
**hashes
;
9334 unsigned long symndx
;
9335 struct ppc_link_hash_entry
*h
;
9337 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9340 bfd_size_type hsize
;
9342 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9343 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9346 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9347 htab
->stub_globals
= 1;
9349 symndx
= htab
->stub_globals
++;
9351 hashes
[symndx
] = &h
->elf
;
9352 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9353 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9354 h
= ppc_follow_link (h
->oh
);
9355 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9356 /* H is an opd symbol. The addend must be zero. */
9360 off
= (h
->elf
.root
.u
.def
.value
9361 + h
->elf
.root
.u
.def
.section
->output_offset
9362 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9369 case ppc_stub_plt_branch
:
9370 case ppc_stub_plt_branch_r2off
:
9371 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9372 stub_entry
->root
.string
+ 9,
9374 if (br_entry
== NULL
)
9376 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9377 stub_entry
->root
.string
);
9378 htab
->stub_error
= TRUE
;
9382 dest
= (stub_entry
->target_value
9383 + stub_entry
->target_section
->output_offset
9384 + stub_entry
->target_section
->output_section
->vma
);
9386 bfd_put_64 (htab
->brlt
->owner
, dest
,
9387 htab
->brlt
->contents
+ br_entry
->offset
);
9389 if (br_entry
->iter
== htab
->stub_iteration
)
9393 if (htab
->relbrlt
!= NULL
)
9395 /* Create a reloc for the branch lookup table entry. */
9396 Elf_Internal_Rela rela
;
9399 rela
.r_offset
= (br_entry
->offset
9400 + htab
->brlt
->output_offset
9401 + htab
->brlt
->output_section
->vma
);
9402 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9403 rela
.r_addend
= dest
;
9405 rl
= htab
->relbrlt
->contents
;
9406 rl
+= (htab
->relbrlt
->reloc_count
++
9407 * sizeof (Elf64_External_Rela
));
9408 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9410 else if (info
->emitrelocations
)
9412 r
= get_relocs (htab
->brlt
, 1);
9415 /* brlt, being SEC_LINKER_CREATED does not go through the
9416 normal reloc processing. Symbols and offsets are not
9417 translated from input file to output file form, so
9418 set up the offset per the output file. */
9419 r
->r_offset
= (br_entry
->offset
9420 + htab
->brlt
->output_offset
9421 + htab
->brlt
->output_section
->vma
);
9422 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9427 dest
= (br_entry
->offset
9428 + htab
->brlt
->output_offset
9429 + htab
->brlt
->output_section
->vma
);
9432 - elf_gp (htab
->brlt
->output_section
->owner
)
9433 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9435 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9437 (*_bfd_error_handler
)
9438 (_("linkage table error against `%s'"),
9439 stub_entry
->root
.string
);
9440 bfd_set_error (bfd_error_bad_value
);
9441 htab
->stub_error
= TRUE
;
9445 if (info
->emitrelocations
)
9447 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9450 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9451 if (bfd_big_endian (info
->output_bfd
))
9453 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9455 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9456 r
[0].r_addend
= dest
;
9457 if (PPC_HA (off
) != 0)
9459 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9460 r
[1].r_offset
= r
[0].r_offset
+ 4;
9461 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9462 r
[1].r_addend
= r
[0].r_addend
;
9466 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9468 if (PPC_HA (off
) != 0)
9471 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9473 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9478 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9485 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9486 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9487 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9490 if (PPC_HA (off
) != 0)
9493 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9495 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9500 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9504 if (PPC_HA (r2off
) != 0)
9507 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9510 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9513 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9515 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9518 case ppc_stub_plt_call
:
9519 if (stub_entry
->h
!= NULL
9520 && stub_entry
->h
->is_func_descriptor
9521 && stub_entry
->h
->oh
!= NULL
)
9523 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9525 /* If the old-ABI "dot-symbol" is undefined make it weak so
9526 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9527 FIXME: We used to define the symbol on one of the call
9528 stubs instead, which is why we test symbol section id
9529 against htab->top_id in various places. Likely all
9530 these checks could now disappear. */
9531 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9532 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9535 /* Now build the stub. */
9536 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9537 if (dest
>= (bfd_vma
) -2)
9541 if (!htab
->elf
.dynamic_sections_created
9542 || stub_entry
->h
== NULL
9543 || stub_entry
->h
->elf
.dynindx
== -1)
9546 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9548 if (stub_entry
->h
== NULL
9549 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9551 Elf_Internal_Rela rela
;
9554 rela
.r_offset
= dest
;
9555 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9556 rela
.r_addend
= (stub_entry
->target_value
9557 + stub_entry
->target_section
->output_offset
9558 + stub_entry
->target_section
->output_section
->vma
);
9560 rl
= (htab
->reliplt
->contents
9561 + (htab
->reliplt
->reloc_count
++
9562 * sizeof (Elf64_External_Rela
)));
9563 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9564 stub_entry
->plt_ent
->plt
.offset
|= 1;
9568 - elf_gp (plt
->output_section
->owner
)
9569 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9571 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9573 (*_bfd_error_handler
)
9574 (_("linkage table error against `%s'"),
9575 stub_entry
->h
!= NULL
9576 ? stub_entry
->h
->elf
.root
.root
.string
9578 bfd_set_error (bfd_error_bad_value
);
9579 htab
->stub_error
= TRUE
;
9584 if (info
->emitrelocations
)
9586 r
= get_relocs (stub_entry
->stub_sec
,
9587 (2 + (PPC_HA (off
) != 0)
9588 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9591 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9592 if (bfd_big_endian (info
->output_bfd
))
9594 r
[0].r_addend
= dest
;
9596 if (stub_entry
->h
!= NULL
9597 && (stub_entry
->h
== htab
->tls_get_addr_fd
9598 || stub_entry
->h
== htab
->tls_get_addr
)
9599 && !htab
->no_tls_get_addr_opt
)
9600 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9602 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9611 stub_entry
->stub_sec
->size
+= size
;
9613 if (htab
->emit_stub_syms
)
9615 struct elf_link_hash_entry
*h
;
9618 const char *const stub_str
[] = { "long_branch",
9619 "long_branch_r2off",
9624 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9625 len2
= strlen (stub_entry
->root
.string
);
9626 name
= bfd_malloc (len1
+ len2
+ 2);
9629 memcpy (name
, stub_entry
->root
.string
, 9);
9630 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9631 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9632 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9635 if (h
->root
.type
== bfd_link_hash_new
)
9637 h
->root
.type
= bfd_link_hash_defined
;
9638 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9639 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9642 h
->ref_regular_nonweak
= 1;
9643 h
->forced_local
= 1;
9651 /* As above, but don't actually build the stub. Just bump offset so
9652 we know stub section sizes, and select plt_branch stubs where
9653 long_branch stubs won't do. */
9656 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9658 struct ppc_stub_hash_entry
*stub_entry
;
9659 struct bfd_link_info
*info
;
9660 struct ppc_link_hash_table
*htab
;
9664 /* Massage our args to the form they really have. */
9665 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9668 htab
= ppc_hash_table (info
);
9672 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9675 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9676 if (off
>= (bfd_vma
) -2)
9679 if (!htab
->elf
.dynamic_sections_created
9680 || stub_entry
->h
== NULL
9681 || stub_entry
->h
->elf
.dynindx
== -1)
9683 off
+= (plt
->output_offset
9684 + plt
->output_section
->vma
9685 - elf_gp (plt
->output_section
->owner
)
9686 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9688 size
= PLT_CALL_STUB_SIZE
;
9689 if (PPC_HA (off
) == 0)
9691 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9693 if (stub_entry
->h
!= NULL
9694 && (stub_entry
->h
== htab
->tls_get_addr_fd
9695 || stub_entry
->h
== htab
->tls_get_addr
)
9696 && !htab
->no_tls_get_addr_opt
)
9698 if (info
->emitrelocations
)
9700 stub_entry
->stub_sec
->reloc_count
9701 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9702 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9707 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9711 off
= (stub_entry
->target_value
9712 + stub_entry
->target_section
->output_offset
9713 + stub_entry
->target_section
->output_section
->vma
);
9714 off
-= (stub_entry
->stub_sec
->size
9715 + stub_entry
->stub_sec
->output_offset
9716 + stub_entry
->stub_sec
->output_section
->vma
);
9718 /* Reset the stub type from the plt variant in case we now
9719 can reach with a shorter stub. */
9720 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9721 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9724 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9726 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9727 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9729 if (PPC_HA (r2off
) != 0)
9734 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9735 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9737 struct ppc_branch_hash_entry
*br_entry
;
9739 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9740 stub_entry
->root
.string
+ 9,
9742 if (br_entry
== NULL
)
9744 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9745 stub_entry
->root
.string
);
9746 htab
->stub_error
= TRUE
;
9750 if (br_entry
->iter
!= htab
->stub_iteration
)
9752 br_entry
->iter
= htab
->stub_iteration
;
9753 br_entry
->offset
= htab
->brlt
->size
;
9754 htab
->brlt
->size
+= 8;
9756 if (htab
->relbrlt
!= NULL
)
9757 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9758 else if (info
->emitrelocations
)
9760 htab
->brlt
->reloc_count
+= 1;
9761 htab
->brlt
->flags
|= SEC_RELOC
;
9765 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9766 off
= (br_entry
->offset
9767 + htab
->brlt
->output_offset
9768 + htab
->brlt
->output_section
->vma
9769 - elf_gp (htab
->brlt
->output_section
->owner
)
9770 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9772 if (info
->emitrelocations
)
9774 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9775 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9778 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9781 if (PPC_HA (off
) != 0)
9787 if (PPC_HA (off
) != 0)
9790 if (PPC_HA (r2off
) != 0)
9794 else if (info
->emitrelocations
)
9796 stub_entry
->stub_sec
->reloc_count
+= 1;
9797 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9801 stub_entry
->stub_sec
->size
+= size
;
9805 /* Set up various things so that we can make a list of input sections
9806 for each output section included in the link. Returns -1 on error,
9807 0 when no stubs will be needed, and 1 on success. */
9810 ppc64_elf_setup_section_lists
9811 (struct bfd_link_info
*info
,
9812 asection
*(*add_stub_section
) (const char *, asection
*),
9813 void (*layout_sections_again
) (void))
9816 int top_id
, top_index
, id
;
9818 asection
**input_list
;
9820 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9824 /* Stash our params away. */
9825 htab
->add_stub_section
= add_stub_section
;
9826 htab
->layout_sections_again
= layout_sections_again
;
9828 if (htab
->brlt
== NULL
)
9831 /* Find the top input section id. */
9832 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9834 input_bfd
= input_bfd
->link_next
)
9836 for (section
= input_bfd
->sections
;
9838 section
= section
->next
)
9840 if (top_id
< section
->id
)
9841 top_id
= section
->id
;
9845 htab
->top_id
= top_id
;
9846 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9847 htab
->stub_group
= bfd_zmalloc (amt
);
9848 if (htab
->stub_group
== NULL
)
9851 /* Set toc_off for com, und, abs and ind sections. */
9852 for (id
= 0; id
< 3; id
++)
9853 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9855 /* We can't use output_bfd->section_count here to find the top output
9856 section index as some sections may have been removed, and
9857 strip_excluded_output_sections doesn't renumber the indices. */
9858 for (section
= info
->output_bfd
->sections
, top_index
= 0;
9860 section
= section
->next
)
9862 if (top_index
< section
->index
)
9863 top_index
= section
->index
;
9866 htab
->top_index
= top_index
;
9867 amt
= sizeof (asection
*) * (top_index
+ 1);
9868 input_list
= bfd_zmalloc (amt
);
9869 htab
->input_list
= input_list
;
9870 if (input_list
== NULL
)
9876 /* Set up for first pass at multitoc partitioning. */
9879 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
9881 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9883 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
9884 htab
->toc_curr
= elf_gp (info
->output_bfd
);
9885 htab
->toc_bfd
= NULL
;
9886 htab
->toc_first_sec
= NULL
;
9889 /* The linker repeatedly calls this function for each TOC input section
9890 and linker generated GOT section. Group input bfds such that the toc
9891 within a group is less than 64k in size. */
9894 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
9896 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9897 bfd_vma addr
, off
, limit
;
9902 if (!htab
->second_toc_pass
)
9904 /* Keep track of the first .toc or .got section for this input bfd. */
9905 if (htab
->toc_bfd
!= isec
->owner
)
9907 htab
->toc_bfd
= isec
->owner
;
9908 htab
->toc_first_sec
= isec
;
9911 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
9912 off
= addr
- htab
->toc_curr
;
9914 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
9916 if (off
+ isec
->size
> limit
)
9918 addr
= (htab
->toc_first_sec
->output_offset
9919 + htab
->toc_first_sec
->output_section
->vma
);
9920 htab
->toc_curr
= addr
;
9923 /* toc_curr is the base address of this toc group. Set elf_gp
9924 for the input section to be the offset relative to the
9925 output toc base plus 0x8000. Making the input elf_gp an
9926 offset allows us to move the toc as a whole without
9927 recalculating input elf_gp. */
9928 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
9929 off
+= TOC_BASE_OFF
;
9931 /* Die if someone uses a linker script that doesn't keep input
9932 file .toc and .got together. */
9933 if (elf_gp (isec
->owner
) != 0
9934 && elf_gp (isec
->owner
) != off
)
9937 elf_gp (isec
->owner
) = off
;
9941 /* During the second pass toc_first_sec points to the start of
9942 a toc group, and toc_curr is used to track the old elf_gp.
9943 We use toc_bfd to ensure we only look at each bfd once. */
9944 if (htab
->toc_bfd
== isec
->owner
)
9946 htab
->toc_bfd
= isec
->owner
;
9948 if (htab
->toc_first_sec
== NULL
9949 || htab
->toc_curr
!= elf_gp (isec
->owner
))
9951 htab
->toc_curr
= elf_gp (isec
->owner
);
9952 htab
->toc_first_sec
= isec
;
9954 addr
= (htab
->toc_first_sec
->output_offset
9955 + htab
->toc_first_sec
->output_section
->vma
);
9956 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
9957 elf_gp (isec
->owner
) = off
;
9962 /* Called via elf_link_hash_traverse to merge GOT entries for global
9966 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9968 if (h
->root
.type
== bfd_link_hash_indirect
)
9971 if (h
->root
.type
== bfd_link_hash_warning
)
9972 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9974 merge_got_entries (&h
->got
.glist
);
9979 /* Called via elf_link_hash_traverse to allocate GOT entries for global
9983 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
9985 struct got_entry
*gent
;
9987 if (h
->root
.type
== bfd_link_hash_indirect
)
9990 if (h
->root
.type
== bfd_link_hash_warning
)
9991 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9993 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9994 if (!gent
->is_indirect
)
9995 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
9999 /* Called on the first multitoc pass after the last call to
10000 ppc64_elf_next_toc_section. This function removes duplicate GOT
10004 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10006 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10007 struct bfd
*ibfd
, *ibfd2
;
10008 bfd_boolean done_something
;
10010 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10012 if (!htab
->do_multi_toc
)
10015 /* Merge global sym got entries within a toc group. */
10016 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10018 /* And tlsld_got. */
10019 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10021 struct got_entry
*ent
, *ent2
;
10023 if (!is_ppc64_elf (ibfd
))
10026 ent
= ppc64_tlsld_got (ibfd
);
10027 if (!ent
->is_indirect
10028 && ent
->got
.offset
!= (bfd_vma
) -1)
10030 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10032 if (!is_ppc64_elf (ibfd2
))
10035 ent2
= ppc64_tlsld_got (ibfd2
);
10036 if (!ent2
->is_indirect
10037 && ent2
->got
.offset
!= (bfd_vma
) -1
10038 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10040 ent2
->is_indirect
= TRUE
;
10041 ent2
->got
.ent
= ent
;
10047 /* Zap sizes of got sections. */
10048 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10049 htab
->reliplt
->size
-= htab
->got_reli_size
;
10050 htab
->got_reli_size
= 0;
10052 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10054 asection
*got
, *relgot
;
10056 if (!is_ppc64_elf (ibfd
))
10059 got
= ppc64_elf_tdata (ibfd
)->got
;
10062 got
->rawsize
= got
->size
;
10064 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10065 relgot
->rawsize
= relgot
->size
;
10070 /* Now reallocate the got, local syms first. We don't need to
10071 allocate section contents again since we never increase size. */
10072 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10074 struct got_entry
**lgot_ents
;
10075 struct got_entry
**end_lgot_ents
;
10076 struct plt_entry
**local_plt
;
10077 struct plt_entry
**end_local_plt
;
10078 unsigned char *lgot_masks
;
10079 bfd_size_type locsymcount
;
10080 Elf_Internal_Shdr
*symtab_hdr
;
10081 asection
*s
, *srel
;
10083 if (!is_ppc64_elf (ibfd
))
10086 lgot_ents
= elf_local_got_ents (ibfd
);
10090 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10091 locsymcount
= symtab_hdr
->sh_info
;
10092 end_lgot_ents
= lgot_ents
+ locsymcount
;
10093 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10094 end_local_plt
= local_plt
+ locsymcount
;
10095 lgot_masks
= (unsigned char *) end_local_plt
;
10096 s
= ppc64_elf_tdata (ibfd
)->got
;
10097 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10098 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10100 struct got_entry
*ent
;
10102 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10104 unsigned int num
= 1;
10105 ent
->got
.offset
= s
->size
;
10106 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10108 s
->size
+= num
* 8;
10110 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10111 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10113 htab
->reliplt
->size
10114 += num
* sizeof (Elf64_External_Rela
);
10115 htab
->got_reli_size
10116 += num
* sizeof (Elf64_External_Rela
);
10122 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10124 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10126 struct got_entry
*ent
;
10128 if (!is_ppc64_elf (ibfd
))
10131 ent
= ppc64_tlsld_got (ibfd
);
10132 if (!ent
->is_indirect
10133 && ent
->got
.offset
!= (bfd_vma
) -1)
10135 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10136 ent
->got
.offset
= s
->size
;
10140 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10141 srel
->size
+= sizeof (Elf64_External_Rela
);
10146 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10147 if (!done_something
)
10148 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10152 if (!is_ppc64_elf (ibfd
))
10155 got
= ppc64_elf_tdata (ibfd
)->got
;
10158 done_something
= got
->rawsize
!= got
->size
;
10159 if (done_something
)
10164 if (done_something
)
10165 (*htab
->layout_sections_again
) ();
10167 /* Set up for second pass over toc sections to recalculate elf_gp
10168 on input sections. */
10169 htab
->toc_bfd
= NULL
;
10170 htab
->toc_first_sec
= NULL
;
10171 htab
->second_toc_pass
= TRUE
;
10172 return done_something
;
10175 /* Called after second pass of multitoc partitioning. */
10178 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10180 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10182 /* After the second pass, toc_curr tracks the TOC offset used
10183 for code sections below in ppc64_elf_next_input_section. */
10184 htab
->toc_curr
= TOC_BASE_OFF
;
10187 /* No toc references were found in ISEC. If the code in ISEC makes no
10188 calls, then there's no need to use toc adjusting stubs when branching
10189 into ISEC. Actually, indirect calls from ISEC are OK as they will
10190 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10191 needed, and 2 if a cyclical call-graph was found but no other reason
10192 for a stub was detected. If called from the top level, a return of
10193 2 means the same as a return of 0. */
10196 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10200 /* Mark this section as checked. */
10201 isec
->call_check_done
= 1;
10203 /* We know none of our code bearing sections will need toc stubs. */
10204 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10207 if (isec
->size
== 0)
10210 if (isec
->output_section
== NULL
)
10214 if (isec
->reloc_count
!= 0)
10216 Elf_Internal_Rela
*relstart
, *rel
;
10217 Elf_Internal_Sym
*local_syms
;
10218 struct ppc_link_hash_table
*htab
;
10220 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10221 info
->keep_memory
);
10222 if (relstart
== NULL
)
10225 /* Look for branches to outside of this section. */
10227 htab
= ppc_hash_table (info
);
10231 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10233 enum elf_ppc64_reloc_type r_type
;
10234 unsigned long r_symndx
;
10235 struct elf_link_hash_entry
*h
;
10236 struct ppc_link_hash_entry
*eh
;
10237 Elf_Internal_Sym
*sym
;
10239 struct _opd_sec_data
*opd
;
10243 r_type
= ELF64_R_TYPE (rel
->r_info
);
10244 if (r_type
!= R_PPC64_REL24
10245 && r_type
!= R_PPC64_REL14
10246 && r_type
!= R_PPC64_REL14_BRTAKEN
10247 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10250 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10251 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10258 /* Calls to dynamic lib functions go through a plt call stub
10260 eh
= (struct ppc_link_hash_entry
*) h
;
10262 && (eh
->elf
.plt
.plist
!= NULL
10264 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10270 if (sym_sec
== NULL
)
10271 /* Ignore other undefined symbols. */
10274 /* Assume branches to other sections not included in the
10275 link need stubs too, to cover -R and absolute syms. */
10276 if (sym_sec
->output_section
== NULL
)
10283 sym_value
= sym
->st_value
;
10286 if (h
->root
.type
!= bfd_link_hash_defined
10287 && h
->root
.type
!= bfd_link_hash_defweak
)
10289 sym_value
= h
->root
.u
.def
.value
;
10291 sym_value
+= rel
->r_addend
;
10293 /* If this branch reloc uses an opd sym, find the code section. */
10294 opd
= get_opd_info (sym_sec
);
10297 if (h
== NULL
&& opd
->adjust
!= NULL
)
10301 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10303 /* Assume deleted functions won't ever be called. */
10305 sym_value
+= adjust
;
10308 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10309 if (dest
== (bfd_vma
) -1)
10314 + sym_sec
->output_offset
10315 + sym_sec
->output_section
->vma
);
10317 /* Ignore branch to self. */
10318 if (sym_sec
== isec
)
10321 /* If the called function uses the toc, we need a stub. */
10322 if (sym_sec
->has_toc_reloc
10323 || sym_sec
->makes_toc_func_call
)
10329 /* Assume any branch that needs a long branch stub might in fact
10330 need a plt_branch stub. A plt_branch stub uses r2. */
10331 else if (dest
- (isec
->output_offset
10332 + isec
->output_section
->vma
10333 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10339 /* If calling back to a section in the process of being
10340 tested, we can't say for sure that no toc adjusting stubs
10341 are needed, so don't return zero. */
10342 else if (sym_sec
->call_check_in_progress
)
10345 /* Branches to another section that itself doesn't have any TOC
10346 references are OK. Recursively call ourselves to check. */
10347 else if (!sym_sec
->call_check_done
)
10351 /* Mark current section as indeterminate, so that other
10352 sections that call back to current won't be marked as
10354 isec
->call_check_in_progress
= 1;
10355 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10356 isec
->call_check_in_progress
= 0;
10367 if (local_syms
!= NULL
10368 && (elf_symtab_hdr (isec
->owner
).contents
10369 != (unsigned char *) local_syms
))
10371 if (elf_section_data (isec
)->relocs
!= relstart
)
10376 && isec
->map_head
.s
!= NULL
10377 && (strcmp (isec
->output_section
->name
, ".init") == 0
10378 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10380 if (isec
->map_head
.s
->has_toc_reloc
10381 || isec
->map_head
.s
->makes_toc_func_call
)
10383 else if (!isec
->map_head
.s
->call_check_done
)
10386 isec
->call_check_in_progress
= 1;
10387 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10388 isec
->call_check_in_progress
= 0;
10395 isec
->makes_toc_func_call
= 1;
10400 /* The linker repeatedly calls this function for each input section,
10401 in the order that input sections are linked into output sections.
10402 Build lists of input sections to determine groupings between which
10403 we may insert linker stubs. */
10406 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10408 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10413 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10414 && isec
->output_section
->index
<= htab
->top_index
)
10416 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10417 /* Steal the link_sec pointer for our list. */
10418 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10419 /* This happens to make the list in reverse order,
10420 which is what we want. */
10421 PREV_SEC (isec
) = *list
;
10425 if (htab
->multi_toc_needed
)
10427 /* If a code section has a function that uses the TOC then we need
10428 to use the right TOC (obviously). Also, make sure that .opd gets
10429 the correct TOC value for R_PPC64_TOC relocs that don't have or
10430 can't find their function symbol (shouldn't ever happen now).
10431 Also specially treat .fixup for the linux kernel. .fixup
10432 contains branches, but only back to the function that hit an
10434 if (isec
->has_toc_reloc
10435 || (isec
->flags
& SEC_CODE
) == 0
10436 || strcmp (isec
->name
, ".fixup") == 0)
10438 if (elf_gp (isec
->owner
) != 0)
10439 htab
->toc_curr
= elf_gp (isec
->owner
);
10441 else if (!isec
->call_check_done
10442 && toc_adjusting_stub_needed (info
, isec
) < 0)
10446 /* Functions that don't use the TOC can belong in any TOC group.
10447 Use the last TOC base. This happens to make _init and _fini
10448 pasting work, because the fragments generally don't use the TOC. */
10449 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10453 /* Check that all .init and .fini sections use the same toc, if they
10454 have toc relocs. */
10457 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10459 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10463 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10464 bfd_vma toc_off
= 0;
10467 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10468 if (i
->has_toc_reloc
)
10471 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10472 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10475 /* Make sure the whole pasted function uses the same toc offset. */
10477 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10478 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10484 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10486 return (check_pasted_section (info
, ".init")
10487 & check_pasted_section (info
, ".fini"));
10490 /* See whether we can group stub sections together. Grouping stub
10491 sections may result in fewer stubs. More importantly, we need to
10492 put all .init* and .fini* stubs at the beginning of the .init or
10493 .fini output sections respectively, because glibc splits the
10494 _init and _fini functions into multiple parts. Putting a stub in
10495 the middle of a function is not a good idea. */
10498 group_sections (struct ppc_link_hash_table
*htab
,
10499 bfd_size_type stub_group_size
,
10500 bfd_boolean stubs_always_before_branch
)
10503 bfd_size_type stub14_group_size
;
10504 bfd_boolean suppress_size_errors
;
10506 suppress_size_errors
= FALSE
;
10507 stub14_group_size
= stub_group_size
;
10508 if (stub_group_size
== 1)
10510 /* Default values. */
10511 if (stubs_always_before_branch
)
10513 stub_group_size
= 0x1e00000;
10514 stub14_group_size
= 0x7800;
10518 stub_group_size
= 0x1c00000;
10519 stub14_group_size
= 0x7000;
10521 suppress_size_errors
= TRUE
;
10524 list
= htab
->input_list
+ htab
->top_index
;
10527 asection
*tail
= *list
;
10528 while (tail
!= NULL
)
10532 bfd_size_type total
;
10533 bfd_boolean big_sec
;
10537 total
= tail
->size
;
10538 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
10539 ? stub14_group_size
: stub_group_size
);
10540 if (big_sec
&& !suppress_size_errors
)
10541 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10542 tail
->owner
, tail
);
10543 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10545 while ((prev
= PREV_SEC (curr
)) != NULL
10546 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10547 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10548 ? stub14_group_size
: stub_group_size
))
10549 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10552 /* OK, the size from the start of CURR to the end is less
10553 than stub_group_size and thus can be handled by one stub
10554 section. (or the tail section is itself larger than
10555 stub_group_size, in which case we may be toast.) We
10556 should really be keeping track of the total size of stubs
10557 added here, as stubs contribute to the final output
10558 section size. That's a little tricky, and this way will
10559 only break if stubs added make the total size more than
10560 2^25, ie. for the default stub_group_size, if stubs total
10561 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10564 prev
= PREV_SEC (tail
);
10565 /* Set up this stub group. */
10566 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10568 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10570 /* But wait, there's more! Input sections up to stub_group_size
10571 bytes before the stub section can be handled by it too.
10572 Don't do this if we have a really large section after the
10573 stubs, as adding more stubs increases the chance that
10574 branches may not reach into the stub section. */
10575 if (!stubs_always_before_branch
&& !big_sec
)
10578 while (prev
!= NULL
10579 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10580 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10581 ? stub14_group_size
: stub_group_size
))
10582 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10585 prev
= PREV_SEC (tail
);
10586 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10592 while (list
-- != htab
->input_list
);
10593 free (htab
->input_list
);
10597 /* Determine and set the size of the stub section for a final link.
10599 The basic idea here is to examine all the relocations looking for
10600 PC-relative calls to a target that is unreachable with a "bl"
10604 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10606 bfd_size_type stub_group_size
;
10607 bfd_boolean stubs_always_before_branch
;
10608 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10613 stubs_always_before_branch
= group_size
< 0;
10614 if (group_size
< 0)
10615 stub_group_size
= -group_size
;
10617 stub_group_size
= group_size
;
10619 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10624 unsigned int bfd_indx
;
10625 asection
*stub_sec
;
10627 htab
->stub_iteration
+= 1;
10629 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10631 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10633 Elf_Internal_Shdr
*symtab_hdr
;
10635 Elf_Internal_Sym
*local_syms
= NULL
;
10637 if (!is_ppc64_elf (input_bfd
))
10640 /* We'll need the symbol table in a second. */
10641 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10642 if (symtab_hdr
->sh_info
== 0)
10645 /* Walk over each section attached to the input bfd. */
10646 for (section
= input_bfd
->sections
;
10648 section
= section
->next
)
10650 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10652 /* If there aren't any relocs, then there's nothing more
10654 if ((section
->flags
& SEC_RELOC
) == 0
10655 || (section
->flags
& SEC_ALLOC
) == 0
10656 || (section
->flags
& SEC_LOAD
) == 0
10657 || (section
->flags
& SEC_CODE
) == 0
10658 || section
->reloc_count
== 0)
10661 /* If this section is a link-once section that will be
10662 discarded, then don't create any stubs. */
10663 if (section
->output_section
== NULL
10664 || section
->output_section
->owner
!= info
->output_bfd
)
10667 /* Get the relocs. */
10669 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10670 info
->keep_memory
);
10671 if (internal_relocs
== NULL
)
10672 goto error_ret_free_local
;
10674 /* Now examine each relocation. */
10675 irela
= internal_relocs
;
10676 irelaend
= irela
+ section
->reloc_count
;
10677 for (; irela
< irelaend
; irela
++)
10679 enum elf_ppc64_reloc_type r_type
;
10680 unsigned int r_indx
;
10681 enum ppc_stub_type stub_type
;
10682 struct ppc_stub_hash_entry
*stub_entry
;
10683 asection
*sym_sec
, *code_sec
;
10684 bfd_vma sym_value
, code_value
;
10685 bfd_vma destination
;
10686 bfd_boolean ok_dest
;
10687 struct ppc_link_hash_entry
*hash
;
10688 struct ppc_link_hash_entry
*fdh
;
10689 struct elf_link_hash_entry
*h
;
10690 Elf_Internal_Sym
*sym
;
10692 const asection
*id_sec
;
10693 struct _opd_sec_data
*opd
;
10694 struct plt_entry
*plt_ent
;
10696 r_type
= ELF64_R_TYPE (irela
->r_info
);
10697 r_indx
= ELF64_R_SYM (irela
->r_info
);
10699 if (r_type
>= R_PPC64_max
)
10701 bfd_set_error (bfd_error_bad_value
);
10702 goto error_ret_free_internal
;
10705 /* Only look for stubs on branch instructions. */
10706 if (r_type
!= R_PPC64_REL24
10707 && r_type
!= R_PPC64_REL14
10708 && r_type
!= R_PPC64_REL14_BRTAKEN
10709 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10712 /* Now determine the call target, its name, value,
10714 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10715 r_indx
, input_bfd
))
10716 goto error_ret_free_internal
;
10717 hash
= (struct ppc_link_hash_entry
*) h
;
10724 sym_value
= sym
->st_value
;
10727 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10728 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10730 sym_value
= hash
->elf
.root
.u
.def
.value
;
10731 if (sym_sec
->output_section
!= NULL
)
10734 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10735 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10737 /* Recognise an old ABI func code entry sym, and
10738 use the func descriptor sym instead if it is
10740 if (hash
->elf
.root
.root
.string
[0] == '.'
10741 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10743 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10744 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10746 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10747 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10748 if (sym_sec
->output_section
!= NULL
)
10757 bfd_set_error (bfd_error_bad_value
);
10758 goto error_ret_free_internal
;
10764 sym_value
+= irela
->r_addend
;
10765 destination
= (sym_value
10766 + sym_sec
->output_offset
10767 + sym_sec
->output_section
->vma
);
10770 code_sec
= sym_sec
;
10771 code_value
= sym_value
;
10772 opd
= get_opd_info (sym_sec
);
10777 if (hash
== NULL
&& opd
->adjust
!= NULL
)
10779 long adjust
= opd
->adjust
[sym_value
/ 8];
10782 code_value
+= adjust
;
10783 sym_value
+= adjust
;
10785 dest
= opd_entry_value (sym_sec
, sym_value
,
10786 &code_sec
, &code_value
);
10787 if (dest
!= (bfd_vma
) -1)
10789 destination
= dest
;
10792 /* Fixup old ABI sym to point at code
10794 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
10795 hash
->elf
.root
.u
.def
.section
= code_sec
;
10796 hash
->elf
.root
.u
.def
.value
= code_value
;
10801 /* Determine what (if any) linker stub is needed. */
10803 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
10804 &plt_ent
, destination
);
10806 if (stub_type
!= ppc_stub_plt_call
)
10808 /* Check whether we need a TOC adjusting stub.
10809 Since the linker pastes together pieces from
10810 different object files when creating the
10811 _init and _fini functions, it may be that a
10812 call to what looks like a local sym is in
10813 fact a call needing a TOC adjustment. */
10814 if (code_sec
!= NULL
10815 && code_sec
->output_section
!= NULL
10816 && (htab
->stub_group
[code_sec
->id
].toc_off
10817 != htab
->stub_group
[section
->id
].toc_off
)
10818 && (code_sec
->has_toc_reloc
10819 || code_sec
->makes_toc_func_call
))
10820 stub_type
= ppc_stub_long_branch_r2off
;
10823 if (stub_type
== ppc_stub_none
)
10826 /* __tls_get_addr calls might be eliminated. */
10827 if (stub_type
!= ppc_stub_plt_call
10829 && (hash
== htab
->tls_get_addr
10830 || hash
== htab
->tls_get_addr_fd
)
10831 && section
->has_tls_reloc
10832 && irela
!= internal_relocs
)
10834 /* Get tls info. */
10835 unsigned char *tls_mask
;
10837 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
10838 irela
- 1, input_bfd
))
10839 goto error_ret_free_internal
;
10840 if (*tls_mask
!= 0)
10844 /* Support for grouping stub sections. */
10845 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
10847 /* Get the name of this stub. */
10848 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
10850 goto error_ret_free_internal
;
10852 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
10853 stub_name
, FALSE
, FALSE
);
10854 if (stub_entry
!= NULL
)
10856 /* The proper stub has already been created. */
10861 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
10862 if (stub_entry
== NULL
)
10865 error_ret_free_internal
:
10866 if (elf_section_data (section
)->relocs
== NULL
)
10867 free (internal_relocs
);
10868 error_ret_free_local
:
10869 if (local_syms
!= NULL
10870 && (symtab_hdr
->contents
10871 != (unsigned char *) local_syms
))
10876 stub_entry
->stub_type
= stub_type
;
10877 if (stub_type
!= ppc_stub_plt_call
)
10879 stub_entry
->target_value
= code_value
;
10880 stub_entry
->target_section
= code_sec
;
10884 stub_entry
->target_value
= sym_value
;
10885 stub_entry
->target_section
= sym_sec
;
10887 stub_entry
->h
= hash
;
10888 stub_entry
->plt_ent
= plt_ent
;
10889 stub_entry
->addend
= irela
->r_addend
;
10891 if (stub_entry
->h
!= NULL
)
10892 htab
->stub_globals
+= 1;
10895 /* We're done with the internal relocs, free them. */
10896 if (elf_section_data (section
)->relocs
!= internal_relocs
)
10897 free (internal_relocs
);
10900 if (local_syms
!= NULL
10901 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
10903 if (!info
->keep_memory
)
10906 symtab_hdr
->contents
= (unsigned char *) local_syms
;
10910 /* We may have added some stubs. Find out the new size of the
10912 for (stub_sec
= htab
->stub_bfd
->sections
;
10914 stub_sec
= stub_sec
->next
)
10915 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
10917 stub_sec
->rawsize
= stub_sec
->size
;
10918 stub_sec
->size
= 0;
10919 stub_sec
->reloc_count
= 0;
10920 stub_sec
->flags
&= ~SEC_RELOC
;
10923 htab
->brlt
->size
= 0;
10924 htab
->brlt
->reloc_count
= 0;
10925 htab
->brlt
->flags
&= ~SEC_RELOC
;
10926 if (htab
->relbrlt
!= NULL
)
10927 htab
->relbrlt
->size
= 0;
10929 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
10931 if (info
->emitrelocations
10932 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
10934 htab
->glink
->reloc_count
= 1;
10935 htab
->glink
->flags
|= SEC_RELOC
;
10938 for (stub_sec
= htab
->stub_bfd
->sections
;
10940 stub_sec
= stub_sec
->next
)
10941 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
10942 && stub_sec
->rawsize
!= stub_sec
->size
)
10945 /* Exit from this loop when no stubs have been added, and no stubs
10946 have changed size. */
10947 if (stub_sec
== NULL
)
10950 /* Ask the linker to do its stuff. */
10951 (*htab
->layout_sections_again
) ();
10954 /* It would be nice to strip htab->brlt from the output if the
10955 section is empty, but it's too late. If we strip sections here,
10956 the dynamic symbol table is corrupted since the section symbol
10957 for the stripped section isn't written. */
10962 /* Called after we have determined section placement. If sections
10963 move, we'll be called again. Provide a value for TOCstart. */
10966 ppc64_elf_toc (bfd
*obfd
)
10971 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10972 order. The TOC starts where the first of these sections starts. */
10973 s
= bfd_get_section_by_name (obfd
, ".got");
10974 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10975 s
= bfd_get_section_by_name (obfd
, ".toc");
10976 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10977 s
= bfd_get_section_by_name (obfd
, ".tocbss");
10978 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10979 s
= bfd_get_section_by_name (obfd
, ".plt");
10980 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
10982 /* This may happen for
10983 o references to TOC base (SYM@toc / TOC[tc0]) without a
10985 o bad linker script
10986 o --gc-sections and empty TOC sections
10988 FIXME: Warn user? */
10990 /* Look for a likely section. We probably won't even be
10992 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10993 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
10995 == (SEC_ALLOC
| SEC_SMALL_DATA
))
10998 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
10999 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11000 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11003 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11004 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11008 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11009 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11015 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11020 /* Build all the stubs associated with the current output file.
11021 The stubs are kept in a hash table attached to the main linker
11022 hash table. This function is called via gldelf64ppc_finish. */
11025 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11026 struct bfd_link_info
*info
,
11029 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11030 asection
*stub_sec
;
11032 int stub_sec_count
= 0;
11037 htab
->emit_stub_syms
= emit_stub_syms
;
11039 /* Allocate memory to hold the linker stubs. */
11040 for (stub_sec
= htab
->stub_bfd
->sections
;
11042 stub_sec
= stub_sec
->next
)
11043 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11044 && stub_sec
->size
!= 0)
11046 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11047 if (stub_sec
->contents
== NULL
)
11049 /* We want to check that built size is the same as calculated
11050 size. rawsize is a convenient location to use. */
11051 stub_sec
->rawsize
= stub_sec
->size
;
11052 stub_sec
->size
= 0;
11055 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11060 /* Build the .glink plt call stub. */
11061 if (htab
->emit_stub_syms
)
11063 struct elf_link_hash_entry
*h
;
11064 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11065 TRUE
, FALSE
, FALSE
);
11068 if (h
->root
.type
== bfd_link_hash_new
)
11070 h
->root
.type
= bfd_link_hash_defined
;
11071 h
->root
.u
.def
.section
= htab
->glink
;
11072 h
->root
.u
.def
.value
= 8;
11073 h
->ref_regular
= 1;
11074 h
->def_regular
= 1;
11075 h
->ref_regular_nonweak
= 1;
11076 h
->forced_local
= 1;
11080 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11081 if (info
->emitrelocations
)
11083 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11086 r
->r_offset
= (htab
->glink
->output_offset
11087 + htab
->glink
->output_section
->vma
);
11088 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11089 r
->r_addend
= plt0
;
11091 p
= htab
->glink
->contents
;
11092 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11093 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11095 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11097 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11099 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11101 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11103 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11105 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11107 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11109 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11111 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11113 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11115 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11117 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11119 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11123 /* Build the .glink lazy link call stubs. */
11125 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11129 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11134 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11136 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11139 bfd_put_32 (htab
->glink
->owner
,
11140 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11144 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11147 if (htab
->brlt
->size
!= 0)
11149 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11151 if (htab
->brlt
->contents
== NULL
)
11154 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11156 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11157 htab
->relbrlt
->size
);
11158 if (htab
->relbrlt
->contents
== NULL
)
11162 /* Build the stubs as directed by the stub hash table. */
11163 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11165 if (htab
->relbrlt
!= NULL
)
11166 htab
->relbrlt
->reloc_count
= 0;
11168 for (stub_sec
= htab
->stub_bfd
->sections
;
11170 stub_sec
= stub_sec
->next
)
11171 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11173 stub_sec_count
+= 1;
11174 if (stub_sec
->rawsize
!= stub_sec
->size
)
11178 if (stub_sec
!= NULL
11179 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11181 htab
->stub_error
= TRUE
;
11182 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11185 if (htab
->stub_error
)
11190 *stats
= bfd_malloc (500);
11191 if (*stats
== NULL
)
11194 sprintf (*stats
, _("linker stubs in %u group%s\n"
11196 " toc adjust %lu\n"
11197 " long branch %lu\n"
11198 " long toc adj %lu\n"
11201 stub_sec_count
== 1 ? "" : "s",
11202 htab
->stub_count
[ppc_stub_long_branch
- 1],
11203 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11204 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11205 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11206 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11211 /* This function undoes the changes made by add_symbol_adjust. */
11214 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11216 struct ppc_link_hash_entry
*eh
;
11218 if (h
->root
.type
== bfd_link_hash_indirect
)
11221 if (h
->root
.type
== bfd_link_hash_warning
)
11222 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11224 eh
= (struct ppc_link_hash_entry
*) h
;
11225 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11228 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11233 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11235 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11238 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11241 /* What to do when ld finds relocations against symbols defined in
11242 discarded sections. */
11244 static unsigned int
11245 ppc64_elf_action_discarded (asection
*sec
)
11247 if (strcmp (".opd", sec
->name
) == 0)
11250 if (strcmp (".toc", sec
->name
) == 0)
11253 if (strcmp (".toc1", sec
->name
) == 0)
11256 return _bfd_elf_default_action_discarded (sec
);
11259 /* REL points to a low-part reloc on a bigtoc instruction sequence.
11260 Find the matching high-part reloc instruction and verify that it
11261 is addis REG,r2,x. If so, return a pointer to the high-part reloc. */
11263 static const Elf_Internal_Rela
*
11264 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11265 const Elf_Internal_Rela
*rel
,
11267 const bfd
*input_bfd
,
11268 const bfd_byte
*contents
)
11270 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11271 bfd_vma r_info_ha
, r_addend
;
11273 r_type
= ELF64_R_TYPE (rel
->r_info
);
11276 case R_PPC64_GOT_TLSLD16_LO
:
11277 case R_PPC64_GOT_TLSGD16_LO
:
11278 case R_PPC64_GOT_TPREL16_LO_DS
:
11279 case R_PPC64_GOT_DTPREL16_LO_DS
:
11280 case R_PPC64_GOT16_LO
:
11281 case R_PPC64_TOC16_LO
:
11282 r_type_ha
= r_type
+ 2;
11284 case R_PPC64_GOT16_LO_DS
:
11285 r_type_ha
= R_PPC64_GOT16_HA
;
11287 case R_PPC64_TOC16_LO_DS
:
11288 r_type_ha
= R_PPC64_TOC16_HA
;
11293 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11294 r_addend
= rel
->r_addend
;
11296 while (--rel
>= relocs
)
11297 if (rel
->r_info
== r_info_ha
11298 && rel
->r_addend
== r_addend
)
11300 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11301 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11302 if ((insn
& ((0x3f << 26) | (0x1f << 16)))
11303 == ((15u << 26) | (2 << 16)) /* addis rt,r2,x */
11304 && (insn
& (0x1f << 21)) == (reg
<< 21))
11311 /* The RELOCATE_SECTION function is called by the ELF backend linker
11312 to handle the relocations for a section.
11314 The relocs are always passed as Rela structures; if the section
11315 actually uses Rel structures, the r_addend field will always be
11318 This function is responsible for adjust the section contents as
11319 necessary, and (if using Rela relocs and generating a
11320 relocatable output file) adjusting the reloc addend as
11323 This function does not have to worry about setting the reloc
11324 address or the reloc symbol index.
11326 LOCAL_SYMS is a pointer to the swapped in local symbols.
11328 LOCAL_SECTIONS is an array giving the section in the input file
11329 corresponding to the st_shndx field of each local symbol.
11331 The global hash table entry for the global symbols can be found
11332 via elf_sym_hashes (input_bfd).
11334 When generating relocatable output, this function must handle
11335 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11336 going to be the section symbol corresponding to the output
11337 section, which means that the addend must be adjusted
11341 ppc64_elf_relocate_section (bfd
*output_bfd
,
11342 struct bfd_link_info
*info
,
11344 asection
*input_section
,
11345 bfd_byte
*contents
,
11346 Elf_Internal_Rela
*relocs
,
11347 Elf_Internal_Sym
*local_syms
,
11348 asection
**local_sections
)
11350 struct ppc_link_hash_table
*htab
;
11351 Elf_Internal_Shdr
*symtab_hdr
;
11352 struct elf_link_hash_entry
**sym_hashes
;
11353 Elf_Internal_Rela
*rel
;
11354 Elf_Internal_Rela
*relend
;
11355 Elf_Internal_Rela outrel
;
11357 struct got_entry
**local_got_ents
;
11359 bfd_boolean ret
= TRUE
;
11360 bfd_boolean is_opd
;
11361 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11362 bfd_boolean is_power4
= FALSE
;
11363 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11365 /* Initialize howto table if needed. */
11366 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11369 htab
= ppc_hash_table (info
);
11373 /* Don't relocate stub sections. */
11374 if (input_section
->owner
== htab
->stub_bfd
)
11377 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11379 local_got_ents
= elf_local_got_ents (input_bfd
);
11380 TOCstart
= elf_gp (output_bfd
);
11381 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11382 sym_hashes
= elf_sym_hashes (input_bfd
);
11383 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11386 relend
= relocs
+ input_section
->reloc_count
;
11387 for (; rel
< relend
; rel
++)
11389 enum elf_ppc64_reloc_type r_type
;
11390 bfd_vma addend
, orig_addend
;
11391 bfd_reloc_status_type r
;
11392 Elf_Internal_Sym
*sym
;
11394 struct elf_link_hash_entry
*h_elf
;
11395 struct ppc_link_hash_entry
*h
;
11396 struct ppc_link_hash_entry
*fdh
;
11397 const char *sym_name
;
11398 unsigned long r_symndx
, toc_symndx
;
11399 bfd_vma toc_addend
;
11400 unsigned char tls_mask
, tls_gd
, tls_type
;
11401 unsigned char sym_type
;
11402 bfd_vma relocation
;
11403 bfd_boolean unresolved_reloc
;
11404 bfd_boolean warned
;
11407 struct ppc_stub_hash_entry
*stub_entry
;
11408 bfd_vma max_br_offset
;
11411 r_type
= ELF64_R_TYPE (rel
->r_info
);
11412 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11414 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11415 symbol of the previous ADDR64 reloc. The symbol gives us the
11416 proper TOC base to use. */
11417 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11419 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11421 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11427 unresolved_reloc
= FALSE
;
11429 orig_addend
= rel
->r_addend
;
11431 if (r_symndx
< symtab_hdr
->sh_info
)
11433 /* It's a local symbol. */
11434 struct _opd_sec_data
*opd
;
11436 sym
= local_syms
+ r_symndx
;
11437 sec
= local_sections
[r_symndx
];
11438 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11439 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11440 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11441 opd
= get_opd_info (sec
);
11442 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11444 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11449 /* If this is a relocation against the opd section sym
11450 and we have edited .opd, adjust the reloc addend so
11451 that ld -r and ld --emit-relocs output is correct.
11452 If it is a reloc against some other .opd symbol,
11453 then the symbol value will be adjusted later. */
11454 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11455 rel
->r_addend
+= adjust
;
11457 relocation
+= adjust
;
11463 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11464 r_symndx
, symtab_hdr
, sym_hashes
,
11465 h_elf
, sec
, relocation
,
11466 unresolved_reloc
, warned
);
11467 sym_name
= h_elf
->root
.root
.string
;
11468 sym_type
= h_elf
->type
;
11470 h
= (struct ppc_link_hash_entry
*) h_elf
;
11472 if (sec
!= NULL
&& elf_discarded_section (sec
))
11474 /* For relocs against symbols from removed linkonce sections,
11475 or sections discarded by a linker script, we just want the
11476 section contents zeroed. Avoid any special processing. */
11477 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
11478 contents
+ rel
->r_offset
);
11484 if (info
->relocatable
)
11487 /* TLS optimizations. Replace instruction sequences and relocs
11488 based on information we collected in tls_optimize. We edit
11489 RELOCS so that --emit-relocs will output something sensible
11490 for the final instruction stream. */
11495 tls_mask
= h
->tls_mask
;
11496 else if (local_got_ents
!= NULL
)
11498 struct plt_entry
**local_plt
= (struct plt_entry
**)
11499 (local_got_ents
+ symtab_hdr
->sh_info
);
11500 unsigned char *lgot_masks
= (unsigned char *)
11501 (local_plt
+ symtab_hdr
->sh_info
);
11502 tls_mask
= lgot_masks
[r_symndx
];
11505 && (r_type
== R_PPC64_TLS
11506 || r_type
== R_PPC64_TLSGD
11507 || r_type
== R_PPC64_TLSLD
))
11509 /* Check for toc tls entries. */
11510 unsigned char *toc_tls
;
11512 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11513 &local_syms
, rel
, input_bfd
))
11517 tls_mask
= *toc_tls
;
11520 /* Check that tls relocs are used with tls syms, and non-tls
11521 relocs are used with non-tls syms. */
11523 && r_type
!= R_PPC64_NONE
11525 || h
->elf
.root
.type
== bfd_link_hash_defined
11526 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11527 && (IS_PPC64_TLS_RELOC (r_type
)
11528 != (sym_type
== STT_TLS
11529 || (sym_type
== STT_SECTION
11530 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11533 && (r_type
== R_PPC64_TLS
11534 || r_type
== R_PPC64_TLSGD
11535 || r_type
== R_PPC64_TLSLD
))
11536 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11539 (*_bfd_error_handler
)
11540 (!IS_PPC64_TLS_RELOC (r_type
)
11541 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11542 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11545 (long) rel
->r_offset
,
11546 ppc64_elf_howto_table
[r_type
]->name
,
11550 /* Ensure reloc mapping code below stays sane. */
11551 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11552 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11553 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11554 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11555 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11556 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11557 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11558 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11559 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11560 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11568 case R_PPC64_TOC16
:
11569 case R_PPC64_TOC16_LO
:
11570 case R_PPC64_TOC16_DS
:
11571 case R_PPC64_TOC16_LO_DS
:
11573 /* Check for toc tls entries. */
11574 unsigned char *toc_tls
;
11577 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11578 &local_syms
, rel
, input_bfd
);
11584 tls_mask
= *toc_tls
;
11585 if (r_type
== R_PPC64_TOC16_DS
11586 || r_type
== R_PPC64_TOC16_LO_DS
)
11589 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11594 /* If we found a GD reloc pair, then we might be
11595 doing a GD->IE transition. */
11598 tls_gd
= TLS_TPRELGD
;
11599 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11602 else if (retval
== 3)
11604 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11612 case R_PPC64_GOT_TPREL16_HI
:
11613 case R_PPC64_GOT_TPREL16_HA
:
11615 && (tls_mask
& TLS_TPREL
) == 0)
11617 rel
->r_offset
-= d_offset
;
11618 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11619 r_type
= R_PPC64_NONE
;
11620 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11624 case R_PPC64_GOT_TPREL16_DS
:
11625 case R_PPC64_GOT_TPREL16_LO_DS
:
11627 && (tls_mask
& TLS_TPREL
) == 0)
11630 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11632 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11633 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11634 r_type
= R_PPC64_TPREL16_HA
;
11635 if (toc_symndx
!= 0)
11637 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11638 rel
->r_addend
= toc_addend
;
11639 /* We changed the symbol. Start over in order to
11640 get h, sym, sec etc. right. */
11645 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11651 && (tls_mask
& TLS_TPREL
) == 0)
11653 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11654 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11657 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11658 /* Was PPC64_TLS which sits on insn boundary, now
11659 PPC64_TPREL16_LO which is at low-order half-word. */
11660 rel
->r_offset
+= d_offset
;
11661 r_type
= R_PPC64_TPREL16_LO
;
11662 if (toc_symndx
!= 0)
11664 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11665 rel
->r_addend
= toc_addend
;
11666 /* We changed the symbol. Start over in order to
11667 get h, sym, sec etc. right. */
11672 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11676 case R_PPC64_GOT_TLSGD16_HI
:
11677 case R_PPC64_GOT_TLSGD16_HA
:
11678 tls_gd
= TLS_TPRELGD
;
11679 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11683 case R_PPC64_GOT_TLSLD16_HI
:
11684 case R_PPC64_GOT_TLSLD16_HA
:
11685 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11688 if ((tls_mask
& tls_gd
) != 0)
11689 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11690 + R_PPC64_GOT_TPREL16_DS
);
11693 rel
->r_offset
-= d_offset
;
11694 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11695 r_type
= R_PPC64_NONE
;
11697 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11701 case R_PPC64_GOT_TLSGD16
:
11702 case R_PPC64_GOT_TLSGD16_LO
:
11703 tls_gd
= TLS_TPRELGD
;
11704 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11708 case R_PPC64_GOT_TLSLD16
:
11709 case R_PPC64_GOT_TLSLD16_LO
:
11710 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11712 unsigned int insn1
, insn2
, insn3
;
11716 offset
= (bfd_vma
) -1;
11717 /* If not using the newer R_PPC64_TLSGD/LD to mark
11718 __tls_get_addr calls, we must trust that the call
11719 stays with its arg setup insns, ie. that the next
11720 reloc is the __tls_get_addr call associated with
11721 the current reloc. Edit both insns. */
11722 if (input_section
->has_tls_get_addr_call
11723 && rel
+ 1 < relend
11724 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
11725 htab
->tls_get_addr
,
11726 htab
->tls_get_addr_fd
))
11727 offset
= rel
[1].r_offset
;
11728 if ((tls_mask
& tls_gd
) != 0)
11731 insn1
= bfd_get_32 (output_bfd
,
11732 contents
+ rel
->r_offset
- d_offset
);
11733 insn1
&= (1 << 26) - (1 << 2);
11734 insn1
|= 58 << 26; /* ld */
11735 insn2
= 0x7c636a14; /* add 3,3,13 */
11736 if (offset
!= (bfd_vma
) -1)
11737 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11738 if ((tls_mask
& TLS_EXPLICIT
) == 0)
11739 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11740 + R_PPC64_GOT_TPREL16_DS
);
11742 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11743 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11748 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11749 insn2
= 0x38630000; /* addi 3,3,0 */
11752 /* Was an LD reloc. */
11754 sec
= local_sections
[toc_symndx
];
11756 r_symndx
< symtab_hdr
->sh_info
;
11758 if (local_sections
[r_symndx
] == sec
)
11760 if (r_symndx
>= symtab_hdr
->sh_info
)
11762 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11764 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11765 + sec
->output_offset
11766 + sec
->output_section
->vma
);
11768 else if (toc_symndx
!= 0)
11770 r_symndx
= toc_symndx
;
11771 rel
->r_addend
= toc_addend
;
11773 r_type
= R_PPC64_TPREL16_HA
;
11774 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11775 if (offset
!= (bfd_vma
) -1)
11777 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
11778 R_PPC64_TPREL16_LO
);
11779 rel
[1].r_offset
= offset
+ d_offset
;
11780 rel
[1].r_addend
= rel
->r_addend
;
11783 bfd_put_32 (output_bfd
, insn1
,
11784 contents
+ rel
->r_offset
- d_offset
);
11785 if (offset
!= (bfd_vma
) -1)
11787 insn3
= bfd_get_32 (output_bfd
,
11788 contents
+ offset
+ 4);
11790 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11792 rel
[1].r_offset
+= 4;
11793 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11796 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11798 if ((tls_mask
& tls_gd
) == 0
11799 && (tls_gd
== 0 || toc_symndx
!= 0))
11801 /* We changed the symbol. Start over in order
11802 to get h, sym, sec etc. right. */
11809 case R_PPC64_TLSGD
:
11810 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11812 unsigned int insn2
, insn3
;
11813 bfd_vma offset
= rel
->r_offset
;
11815 if ((tls_mask
& TLS_TPRELGD
) != 0)
11818 r_type
= R_PPC64_NONE
;
11819 insn2
= 0x7c636a14; /* add 3,3,13 */
11824 if (toc_symndx
!= 0)
11826 r_symndx
= toc_symndx
;
11827 rel
->r_addend
= toc_addend
;
11829 r_type
= R_PPC64_TPREL16_LO
;
11830 rel
->r_offset
= offset
+ d_offset
;
11831 insn2
= 0x38630000; /* addi 3,3,0 */
11833 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11834 /* Zap the reloc on the _tls_get_addr call too. */
11835 BFD_ASSERT (offset
== rel
[1].r_offset
);
11836 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11837 insn3
= bfd_get_32 (output_bfd
,
11838 contents
+ offset
+ 4);
11840 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11842 rel
->r_offset
+= 4;
11843 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11846 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11847 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
11855 case R_PPC64_TLSLD
:
11856 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11858 unsigned int insn2
, insn3
;
11859 bfd_vma offset
= rel
->r_offset
;
11862 sec
= local_sections
[toc_symndx
];
11864 r_symndx
< symtab_hdr
->sh_info
;
11866 if (local_sections
[r_symndx
] == sec
)
11868 if (r_symndx
>= symtab_hdr
->sh_info
)
11870 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11872 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11873 + sec
->output_offset
11874 + sec
->output_section
->vma
);
11876 r_type
= R_PPC64_TPREL16_LO
;
11877 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11878 rel
->r_offset
= offset
+ d_offset
;
11879 /* Zap the reloc on the _tls_get_addr call too. */
11880 BFD_ASSERT (offset
== rel
[1].r_offset
);
11881 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11882 insn2
= 0x38630000; /* addi 3,3,0 */
11883 insn3
= bfd_get_32 (output_bfd
,
11884 contents
+ offset
+ 4);
11886 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11888 rel
->r_offset
+= 4;
11889 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11892 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11898 case R_PPC64_DTPMOD64
:
11899 if (rel
+ 1 < relend
11900 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
11901 && rel
[1].r_offset
== rel
->r_offset
+ 8)
11903 if ((tls_mask
& TLS_GD
) == 0)
11905 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
11906 if ((tls_mask
& TLS_TPRELGD
) != 0)
11907 r_type
= R_PPC64_TPREL64
;
11910 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11911 r_type
= R_PPC64_NONE
;
11913 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11918 if ((tls_mask
& TLS_LD
) == 0)
11920 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
11921 r_type
= R_PPC64_NONE
;
11922 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11927 case R_PPC64_TPREL64
:
11928 if ((tls_mask
& TLS_TPREL
) == 0)
11930 r_type
= R_PPC64_NONE
;
11931 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11936 /* Handle other relocations that tweak non-addend part of insn. */
11938 max_br_offset
= 1 << 25;
11939 addend
= rel
->r_addend
;
11945 /* Branch taken prediction relocations. */
11946 case R_PPC64_ADDR14_BRTAKEN
:
11947 case R_PPC64_REL14_BRTAKEN
:
11948 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11951 /* Branch not taken prediction relocations. */
11952 case R_PPC64_ADDR14_BRNTAKEN
:
11953 case R_PPC64_REL14_BRNTAKEN
:
11954 insn
|= bfd_get_32 (output_bfd
,
11955 contents
+ rel
->r_offset
) & ~(0x01 << 21);
11958 case R_PPC64_REL14
:
11959 max_br_offset
= 1 << 15;
11962 case R_PPC64_REL24
:
11963 /* Calls to functions with a different TOC, such as calls to
11964 shared objects, need to alter the TOC pointer. This is
11965 done using a linkage stub. A REL24 branching to these
11966 linkage stubs needs to be followed by a nop, as the nop
11967 will be replaced with an instruction to restore the TOC
11972 && h
->oh
->is_func_descriptor
)
11973 fdh
= ppc_follow_link (h
->oh
);
11974 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
11975 if (stub_entry
!= NULL
11976 && (stub_entry
->stub_type
== ppc_stub_plt_call
11977 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
11978 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
11980 bfd_boolean can_plt_call
= FALSE
;
11982 if (rel
->r_offset
+ 8 <= input_section
->size
)
11985 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
11987 || nop
== CROR_151515
|| nop
== CROR_313131
)
11990 && (h
== htab
->tls_get_addr_fd
11991 || h
== htab
->tls_get_addr
)
11992 && !htab
->no_tls_get_addr_opt
)
11994 /* Special stub used, leave nop alone. */
11997 bfd_put_32 (input_bfd
, LD_R2_40R1
,
11998 contents
+ rel
->r_offset
+ 4);
11999 can_plt_call
= TRUE
;
12005 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12007 /* If this is a plain branch rather than a branch
12008 and link, don't require a nop. However, don't
12009 allow tail calls in a shared library as they
12010 will result in r2 being corrupted. */
12012 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12013 if (info
->executable
&& (br
& 1) == 0)
12014 can_plt_call
= TRUE
;
12019 && strcmp (h
->elf
.root
.root
.string
,
12020 ".__libc_start_main") == 0)
12022 /* Allow crt1 branch to go via a toc adjusting stub. */
12023 can_plt_call
= TRUE
;
12027 if (strcmp (input_section
->output_section
->name
,
12029 || strcmp (input_section
->output_section
->name
,
12031 (*_bfd_error_handler
)
12032 (_("%B(%A+0x%lx): automatic multiple TOCs "
12033 "not supported using your crt files; "
12034 "recompile with -mminimal-toc or upgrade gcc"),
12037 (long) rel
->r_offset
);
12039 (*_bfd_error_handler
)
12040 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12041 "does not allow automatic multiple TOCs; "
12042 "recompile with -mminimal-toc or "
12043 "-fno-optimize-sibling-calls, "
12044 "or make `%s' extern"),
12047 (long) rel
->r_offset
,
12050 bfd_set_error (bfd_error_bad_value
);
12056 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12057 unresolved_reloc
= FALSE
;
12060 if ((stub_entry
== NULL
12061 || stub_entry
->stub_type
== ppc_stub_long_branch
12062 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12063 && get_opd_info (sec
) != NULL
)
12065 /* The branch destination is the value of the opd entry. */
12066 bfd_vma off
= (relocation
+ addend
12067 - sec
->output_section
->vma
12068 - sec
->output_offset
);
12069 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12070 if (dest
!= (bfd_vma
) -1)
12077 /* If the branch is out of reach we ought to have a long
12079 from
= (rel
->r_offset
12080 + input_section
->output_offset
12081 + input_section
->output_section
->vma
);
12083 if (stub_entry
!= NULL
12084 && (stub_entry
->stub_type
== ppc_stub_long_branch
12085 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12086 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12087 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12088 || (relocation
+ addend
- from
+ max_br_offset
12089 < 2 * max_br_offset
)))
12090 /* Don't use the stub if this branch is in range. */
12093 if (stub_entry
!= NULL
)
12095 /* Munge up the value and addend so that we call the stub
12096 rather than the procedure directly. */
12097 relocation
= (stub_entry
->stub_offset
12098 + stub_entry
->stub_sec
->output_offset
12099 + stub_entry
->stub_sec
->output_section
->vma
);
12107 /* Set 'a' bit. This is 0b00010 in BO field for branch
12108 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12109 for branch on CTR insns (BO == 1a00t or 1a01t). */
12110 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12111 insn
|= 0x02 << 21;
12112 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12113 insn
|= 0x08 << 21;
12119 /* Invert 'y' bit if not the default. */
12120 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12121 insn
^= 0x01 << 21;
12124 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12127 /* NOP out calls to undefined weak functions.
12128 We can thus call a weak function without first
12129 checking whether the function is defined. */
12131 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12132 && h
->elf
.dynindx
== -1
12133 && r_type
== R_PPC64_REL24
12137 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12143 /* Set `addend'. */
12148 (*_bfd_error_handler
)
12149 (_("%B: unknown relocation type %d for symbol %s"),
12150 input_bfd
, (int) r_type
, sym_name
);
12152 bfd_set_error (bfd_error_bad_value
);
12158 case R_PPC64_TLSGD
:
12159 case R_PPC64_TLSLD
:
12160 case R_PPC64_GNU_VTINHERIT
:
12161 case R_PPC64_GNU_VTENTRY
:
12164 /* GOT16 relocations. Like an ADDR16 using the symbol's
12165 address in the GOT as relocation value instead of the
12166 symbol's value itself. Also, create a GOT entry for the
12167 symbol and put the symbol value there. */
12168 case R_PPC64_GOT_TLSGD16
:
12169 case R_PPC64_GOT_TLSGD16_LO
:
12170 case R_PPC64_GOT_TLSGD16_HI
:
12171 case R_PPC64_GOT_TLSGD16_HA
:
12172 tls_type
= TLS_TLS
| TLS_GD
;
12175 case R_PPC64_GOT_TLSLD16
:
12176 case R_PPC64_GOT_TLSLD16_LO
:
12177 case R_PPC64_GOT_TLSLD16_HI
:
12178 case R_PPC64_GOT_TLSLD16_HA
:
12179 tls_type
= TLS_TLS
| TLS_LD
;
12182 case R_PPC64_GOT_TPREL16_DS
:
12183 case R_PPC64_GOT_TPREL16_LO_DS
:
12184 case R_PPC64_GOT_TPREL16_HI
:
12185 case R_PPC64_GOT_TPREL16_HA
:
12186 tls_type
= TLS_TLS
| TLS_TPREL
;
12189 case R_PPC64_GOT_DTPREL16_DS
:
12190 case R_PPC64_GOT_DTPREL16_LO_DS
:
12191 case R_PPC64_GOT_DTPREL16_HI
:
12192 case R_PPC64_GOT_DTPREL16_HA
:
12193 tls_type
= TLS_TLS
| TLS_DTPREL
;
12196 case R_PPC64_GOT16
:
12197 case R_PPC64_GOT16_LO
:
12198 case R_PPC64_GOT16_HI
:
12199 case R_PPC64_GOT16_HA
:
12200 case R_PPC64_GOT16_DS
:
12201 case R_PPC64_GOT16_LO_DS
:
12204 /* Relocation is to the entry for this symbol in the global
12209 unsigned long indx
= 0;
12210 struct got_entry
*ent
;
12212 if (tls_type
== (TLS_TLS
| TLS_LD
)
12214 || !h
->elf
.def_dynamic
))
12215 ent
= ppc64_tlsld_got (input_bfd
);
12221 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12222 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12225 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
12226 /* This is actually a static link, or it is a
12227 -Bsymbolic link and the symbol is defined
12228 locally, or the symbol was forced to be local
12229 because of a version file. */
12233 indx
= h
->elf
.dynindx
;
12234 unresolved_reloc
= FALSE
;
12236 ent
= h
->elf
.got
.glist
;
12240 if (local_got_ents
== NULL
)
12242 ent
= local_got_ents
[r_symndx
];
12245 for (; ent
!= NULL
; ent
= ent
->next
)
12246 if (ent
->addend
== orig_addend
12247 && ent
->owner
== input_bfd
12248 && ent
->tls_type
== tls_type
)
12254 if (ent
->is_indirect
)
12255 ent
= ent
->got
.ent
;
12256 offp
= &ent
->got
.offset
;
12257 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12261 /* The offset must always be a multiple of 8. We use the
12262 least significant bit to record whether we have already
12263 processed this entry. */
12265 if ((off
& 1) != 0)
12269 /* Generate relocs for the dynamic linker, except in
12270 the case of TLSLD where we'll use one entry per
12278 ? h
->elf
.type
== STT_GNU_IFUNC
12279 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12280 if ((info
->shared
|| indx
!= 0)
12282 || (tls_type
== (TLS_TLS
| TLS_LD
)
12283 && !h
->elf
.def_dynamic
)
12284 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12285 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12286 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12288 relgot
= htab
->reliplt
;
12289 if (relgot
!= NULL
)
12291 outrel
.r_offset
= (got
->output_section
->vma
12292 + got
->output_offset
12294 outrel
.r_addend
= addend
;
12295 if (tls_type
& (TLS_LD
| TLS_GD
))
12297 outrel
.r_addend
= 0;
12298 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12299 if (tls_type
== (TLS_TLS
| TLS_GD
))
12301 loc
= relgot
->contents
;
12302 loc
+= (relgot
->reloc_count
++
12303 * sizeof (Elf64_External_Rela
));
12304 bfd_elf64_swap_reloca_out (output_bfd
,
12306 outrel
.r_offset
+= 8;
12307 outrel
.r_addend
= addend
;
12309 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12312 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12313 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12314 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12315 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12316 else if (indx
!= 0)
12317 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12321 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12323 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12325 /* Write the .got section contents for the sake
12327 loc
= got
->contents
+ off
;
12328 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12332 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12334 outrel
.r_addend
+= relocation
;
12335 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12336 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12338 loc
= relgot
->contents
;
12339 loc
+= (relgot
->reloc_count
++
12340 * sizeof (Elf64_External_Rela
));
12341 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12344 /* Init the .got section contents here if we're not
12345 emitting a reloc. */
12348 relocation
+= addend
;
12349 if (tls_type
== (TLS_TLS
| TLS_LD
))
12351 else if (tls_type
!= 0)
12353 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12354 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12355 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12357 if (tls_type
== (TLS_TLS
| TLS_GD
))
12359 bfd_put_64 (output_bfd
, relocation
,
12360 got
->contents
+ off
+ 8);
12365 bfd_put_64 (output_bfd
, relocation
,
12366 got
->contents
+ off
);
12370 if (off
>= (bfd_vma
) -2)
12373 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12374 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12378 case R_PPC64_PLT16_HA
:
12379 case R_PPC64_PLT16_HI
:
12380 case R_PPC64_PLT16_LO
:
12381 case R_PPC64_PLT32
:
12382 case R_PPC64_PLT64
:
12383 /* Relocation is to the entry for this symbol in the
12384 procedure linkage table. */
12386 /* Resolve a PLT reloc against a local symbol directly,
12387 without using the procedure linkage table. */
12391 /* It's possible that we didn't make a PLT entry for this
12392 symbol. This happens when statically linking PIC code,
12393 or when using -Bsymbolic. Go find a match if there is a
12395 if (htab
->plt
!= NULL
)
12397 struct plt_entry
*ent
;
12398 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12399 if (ent
->addend
== orig_addend
12400 && ent
->plt
.offset
!= (bfd_vma
) -1)
12402 relocation
= (htab
->plt
->output_section
->vma
12403 + htab
->plt
->output_offset
12404 + ent
->plt
.offset
);
12405 unresolved_reloc
= FALSE
;
12411 /* Relocation value is TOC base. */
12412 relocation
= TOCstart
;
12414 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12415 else if (unresolved_reloc
)
12417 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12418 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12420 unresolved_reloc
= TRUE
;
12423 /* TOC16 relocs. We want the offset relative to the TOC base,
12424 which is the address of the start of the TOC plus 0x8000.
12425 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12427 case R_PPC64_TOC16
:
12428 case R_PPC64_TOC16_LO
:
12429 case R_PPC64_TOC16_HI
:
12430 case R_PPC64_TOC16_DS
:
12431 case R_PPC64_TOC16_LO_DS
:
12432 case R_PPC64_TOC16_HA
:
12433 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12436 /* Relocate against the beginning of the section. */
12437 case R_PPC64_SECTOFF
:
12438 case R_PPC64_SECTOFF_LO
:
12439 case R_PPC64_SECTOFF_HI
:
12440 case R_PPC64_SECTOFF_DS
:
12441 case R_PPC64_SECTOFF_LO_DS
:
12442 case R_PPC64_SECTOFF_HA
:
12444 addend
-= sec
->output_section
->vma
;
12447 case R_PPC64_REL16
:
12448 case R_PPC64_REL16_LO
:
12449 case R_PPC64_REL16_HI
:
12450 case R_PPC64_REL16_HA
:
12453 case R_PPC64_REL14
:
12454 case R_PPC64_REL14_BRNTAKEN
:
12455 case R_PPC64_REL14_BRTAKEN
:
12456 case R_PPC64_REL24
:
12459 case R_PPC64_TPREL16
:
12460 case R_PPC64_TPREL16_LO
:
12461 case R_PPC64_TPREL16_HI
:
12462 case R_PPC64_TPREL16_HA
:
12463 case R_PPC64_TPREL16_DS
:
12464 case R_PPC64_TPREL16_LO_DS
:
12465 case R_PPC64_TPREL16_HIGHER
:
12466 case R_PPC64_TPREL16_HIGHERA
:
12467 case R_PPC64_TPREL16_HIGHEST
:
12468 case R_PPC64_TPREL16_HIGHESTA
:
12470 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12471 && h
->elf
.dynindx
== -1)
12473 /* Make this relocation against an undefined weak symbol
12474 resolve to zero. This is really just a tweak, since
12475 code using weak externs ought to check that they are
12476 defined before using them. */
12477 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12479 insn
= bfd_get_32 (output_bfd
, p
);
12480 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12482 bfd_put_32 (output_bfd
, insn
, p
);
12485 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12487 /* The TPREL16 relocs shouldn't really be used in shared
12488 libs as they will result in DT_TEXTREL being set, but
12489 support them anyway. */
12493 case R_PPC64_DTPREL16
:
12494 case R_PPC64_DTPREL16_LO
:
12495 case R_PPC64_DTPREL16_HI
:
12496 case R_PPC64_DTPREL16_HA
:
12497 case R_PPC64_DTPREL16_DS
:
12498 case R_PPC64_DTPREL16_LO_DS
:
12499 case R_PPC64_DTPREL16_HIGHER
:
12500 case R_PPC64_DTPREL16_HIGHERA
:
12501 case R_PPC64_DTPREL16_HIGHEST
:
12502 case R_PPC64_DTPREL16_HIGHESTA
:
12503 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12506 case R_PPC64_DTPMOD64
:
12511 case R_PPC64_TPREL64
:
12512 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12515 case R_PPC64_DTPREL64
:
12516 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12519 /* Relocations that may need to be propagated if this is a
12521 case R_PPC64_REL30
:
12522 case R_PPC64_REL32
:
12523 case R_PPC64_REL64
:
12524 case R_PPC64_ADDR14
:
12525 case R_PPC64_ADDR14_BRNTAKEN
:
12526 case R_PPC64_ADDR14_BRTAKEN
:
12527 case R_PPC64_ADDR16
:
12528 case R_PPC64_ADDR16_DS
:
12529 case R_PPC64_ADDR16_HA
:
12530 case R_PPC64_ADDR16_HI
:
12531 case R_PPC64_ADDR16_HIGHER
:
12532 case R_PPC64_ADDR16_HIGHERA
:
12533 case R_PPC64_ADDR16_HIGHEST
:
12534 case R_PPC64_ADDR16_HIGHESTA
:
12535 case R_PPC64_ADDR16_LO
:
12536 case R_PPC64_ADDR16_LO_DS
:
12537 case R_PPC64_ADDR24
:
12538 case R_PPC64_ADDR32
:
12539 case R_PPC64_ADDR64
:
12540 case R_PPC64_UADDR16
:
12541 case R_PPC64_UADDR32
:
12542 case R_PPC64_UADDR64
:
12544 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12547 if (NO_OPD_RELOCS
&& is_opd
)
12552 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12553 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12554 && (must_be_dyn_reloc (info
, r_type
)
12555 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12556 || (ELIMINATE_COPY_RELOCS
12559 && h
->elf
.dynindx
!= -1
12560 && !h
->elf
.non_got_ref
12561 && !h
->elf
.def_regular
)
12564 ? h
->elf
.type
== STT_GNU_IFUNC
12565 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12567 bfd_boolean skip
, relocate
;
12571 /* When generating a dynamic object, these relocations
12572 are copied into the output file to be resolved at run
12578 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12579 input_section
, rel
->r_offset
);
12580 if (out_off
== (bfd_vma
) -1)
12582 else if (out_off
== (bfd_vma
) -2)
12583 skip
= TRUE
, relocate
= TRUE
;
12584 out_off
+= (input_section
->output_section
->vma
12585 + input_section
->output_offset
);
12586 outrel
.r_offset
= out_off
;
12587 outrel
.r_addend
= rel
->r_addend
;
12589 /* Optimize unaligned reloc use. */
12590 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12591 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12592 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12593 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12594 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12595 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12596 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12597 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12598 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12601 memset (&outrel
, 0, sizeof outrel
);
12602 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
12604 && r_type
!= R_PPC64_TOC
)
12605 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12608 /* This symbol is local, or marked to become local,
12609 or this is an opd section reloc which must point
12610 at a local function. */
12611 outrel
.r_addend
+= relocation
;
12612 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12614 if (is_opd
&& h
!= NULL
)
12616 /* Lie about opd entries. This case occurs
12617 when building shared libraries and we
12618 reference a function in another shared
12619 lib. The same thing happens for a weak
12620 definition in an application that's
12621 overridden by a strong definition in a
12622 shared lib. (I believe this is a generic
12623 bug in binutils handling of weak syms.)
12624 In these cases we won't use the opd
12625 entry in this lib. */
12626 unresolved_reloc
= FALSE
;
12629 && r_type
== R_PPC64_ADDR64
12631 ? h
->elf
.type
== STT_GNU_IFUNC
12632 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12633 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12636 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12638 /* We need to relocate .opd contents for ld.so.
12639 Prelink also wants simple and consistent rules
12640 for relocs. This make all RELATIVE relocs have
12641 *r_offset equal to r_addend. */
12650 ? h
->elf
.type
== STT_GNU_IFUNC
12651 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12653 (*_bfd_error_handler
)
12654 (_("%B(%A+0x%lx): relocation %s for indirect "
12655 "function %s unsupported"),
12658 (long) rel
->r_offset
,
12659 ppc64_elf_howto_table
[r_type
]->name
,
12663 else if (r_symndx
== 0 || bfd_is_abs_section (sec
))
12665 else if (sec
== NULL
|| sec
->owner
== NULL
)
12667 bfd_set_error (bfd_error_bad_value
);
12674 osec
= sec
->output_section
;
12675 indx
= elf_section_data (osec
)->dynindx
;
12679 if ((osec
->flags
& SEC_READONLY
) == 0
12680 && htab
->elf
.data_index_section
!= NULL
)
12681 osec
= htab
->elf
.data_index_section
;
12683 osec
= htab
->elf
.text_index_section
;
12684 indx
= elf_section_data (osec
)->dynindx
;
12686 BFD_ASSERT (indx
!= 0);
12688 /* We are turning this relocation into one
12689 against a section symbol, so subtract out
12690 the output section's address but not the
12691 offset of the input section in the output
12693 outrel
.r_addend
-= osec
->vma
;
12696 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
12700 sreloc
= elf_section_data (input_section
)->sreloc
;
12701 if (!htab
->elf
.dynamic_sections_created
)
12702 sreloc
= htab
->reliplt
;
12703 if (sreloc
== NULL
)
12706 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
12709 loc
= sreloc
->contents
;
12710 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12711 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12713 /* If this reloc is against an external symbol, it will
12714 be computed at runtime, so there's no need to do
12715 anything now. However, for the sake of prelink ensure
12716 that the section contents are a known value. */
12719 unresolved_reloc
= FALSE
;
12720 /* The value chosen here is quite arbitrary as ld.so
12721 ignores section contents except for the special
12722 case of .opd where the contents might be accessed
12723 before relocation. Choose zero, as that won't
12724 cause reloc overflow. */
12727 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12728 to improve backward compatibility with older
12730 if (r_type
== R_PPC64_ADDR64
)
12731 addend
= outrel
.r_addend
;
12732 /* Adjust pc_relative relocs to have zero in *r_offset. */
12733 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
12734 addend
= (input_section
->output_section
->vma
12735 + input_section
->output_offset
12742 case R_PPC64_GLOB_DAT
:
12743 case R_PPC64_JMP_SLOT
:
12744 case R_PPC64_JMP_IREL
:
12745 case R_PPC64_RELATIVE
:
12746 /* We shouldn't ever see these dynamic relocs in relocatable
12748 /* Fall through. */
12750 case R_PPC64_PLTGOT16
:
12751 case R_PPC64_PLTGOT16_DS
:
12752 case R_PPC64_PLTGOT16_HA
:
12753 case R_PPC64_PLTGOT16_HI
:
12754 case R_PPC64_PLTGOT16_LO
:
12755 case R_PPC64_PLTGOT16_LO_DS
:
12756 case R_PPC64_PLTREL32
:
12757 case R_PPC64_PLTREL64
:
12758 /* These ones haven't been implemented yet. */
12760 (*_bfd_error_handler
)
12761 (_("%B: relocation %s is not supported for symbol %s."),
12763 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12765 bfd_set_error (bfd_error_invalid_operation
);
12770 /* Multi-instruction sequences that access the TOC can be
12771 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12772 to nop; addi rb,r2,x; */
12778 case R_PPC64_GOT_TLSLD16_HI
:
12779 case R_PPC64_GOT_TLSGD16_HI
:
12780 case R_PPC64_GOT_TPREL16_HI
:
12781 case R_PPC64_GOT_DTPREL16_HI
:
12782 case R_PPC64_GOT16_HI
:
12783 case R_PPC64_TOC16_HI
:
12784 /* These relocs would only be useful if building up an
12785 offset to later add to r2, perhaps in an indexed
12786 addressing mode instruction. Don't try to optimize.
12787 Unfortunately, the possibility of someone building up an
12788 offset like this or even with the HA relocs, means that
12789 we need to check the high insn when optimizing the low
12793 case R_PPC64_GOT_TLSLD16_HA
:
12794 case R_PPC64_GOT_TLSGD16_HA
:
12795 case R_PPC64_GOT_TPREL16_HA
:
12796 case R_PPC64_GOT_DTPREL16_HA
:
12797 case R_PPC64_GOT16_HA
:
12798 case R_PPC64_TOC16_HA
:
12799 /* For now we don't nop out the first instruction. */
12802 case R_PPC64_GOT_TLSLD16_LO
:
12803 case R_PPC64_GOT_TLSGD16_LO
:
12804 case R_PPC64_GOT_TPREL16_LO_DS
:
12805 case R_PPC64_GOT_DTPREL16_LO_DS
:
12806 case R_PPC64_GOT16_LO
:
12807 case R_PPC64_GOT16_LO_DS
:
12808 case R_PPC64_TOC16_LO
:
12809 case R_PPC64_TOC16_LO_DS
:
12810 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
12812 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
12813 insn
= bfd_get_32 (input_bfd
, p
);
12814 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
12815 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
12816 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
12817 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
12818 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
12819 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
12820 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
12821 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
12822 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
12823 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
12824 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
12825 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
12826 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
12827 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
12828 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
12829 && (insn
& 3) != 1)
12830 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
12831 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
12833 unsigned int reg
= (insn
>> 16) & 0x1f;
12834 if (ha_reloc_match (relocs
, rel
, reg
, input_bfd
, contents
))
12836 insn
&= ~(0x1f << 16);
12838 bfd_put_32 (input_bfd
, insn
, p
);
12845 /* Do any further special processing. */
12851 case R_PPC64_ADDR16_HA
:
12852 case R_PPC64_REL16_HA
:
12853 case R_PPC64_ADDR16_HIGHERA
:
12854 case R_PPC64_ADDR16_HIGHESTA
:
12855 case R_PPC64_TOC16_HA
:
12856 case R_PPC64_SECTOFF_HA
:
12857 case R_PPC64_TPREL16_HA
:
12858 case R_PPC64_DTPREL16_HA
:
12859 case R_PPC64_TPREL16_HIGHER
:
12860 case R_PPC64_TPREL16_HIGHERA
:
12861 case R_PPC64_TPREL16_HIGHEST
:
12862 case R_PPC64_TPREL16_HIGHESTA
:
12863 case R_PPC64_DTPREL16_HIGHER
:
12864 case R_PPC64_DTPREL16_HIGHERA
:
12865 case R_PPC64_DTPREL16_HIGHEST
:
12866 case R_PPC64_DTPREL16_HIGHESTA
:
12867 /* It's just possible that this symbol is a weak symbol
12868 that's not actually defined anywhere. In that case,
12869 'sec' would be NULL, and we should leave the symbol
12870 alone (it will be set to zero elsewhere in the link). */
12875 case R_PPC64_GOT16_HA
:
12876 case R_PPC64_PLTGOT16_HA
:
12877 case R_PPC64_PLT16_HA
:
12878 case R_PPC64_GOT_TLSGD16_HA
:
12879 case R_PPC64_GOT_TLSLD16_HA
:
12880 case R_PPC64_GOT_TPREL16_HA
:
12881 case R_PPC64_GOT_DTPREL16_HA
:
12882 /* Add 0x10000 if sign bit in 0:15 is set.
12883 Bits 0:15 are not used. */
12887 case R_PPC64_ADDR16_DS
:
12888 case R_PPC64_ADDR16_LO_DS
:
12889 case R_PPC64_GOT16_DS
:
12890 case R_PPC64_GOT16_LO_DS
:
12891 case R_PPC64_PLT16_LO_DS
:
12892 case R_PPC64_SECTOFF_DS
:
12893 case R_PPC64_SECTOFF_LO_DS
:
12894 case R_PPC64_TOC16_DS
:
12895 case R_PPC64_TOC16_LO_DS
:
12896 case R_PPC64_PLTGOT16_DS
:
12897 case R_PPC64_PLTGOT16_LO_DS
:
12898 case R_PPC64_GOT_TPREL16_DS
:
12899 case R_PPC64_GOT_TPREL16_LO_DS
:
12900 case R_PPC64_GOT_DTPREL16_DS
:
12901 case R_PPC64_GOT_DTPREL16_LO_DS
:
12902 case R_PPC64_TPREL16_DS
:
12903 case R_PPC64_TPREL16_LO_DS
:
12904 case R_PPC64_DTPREL16_DS
:
12905 case R_PPC64_DTPREL16_LO_DS
:
12906 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
12908 /* If this reloc is against an lq insn, then the value must be
12909 a multiple of 16. This is somewhat of a hack, but the
12910 "correct" way to do this by defining _DQ forms of all the
12911 _DS relocs bloats all reloc switches in this file. It
12912 doesn't seem to make much sense to use any of these relocs
12913 in data, so testing the insn should be safe. */
12914 if ((insn
& (0x3f << 26)) == (56u << 26))
12916 if (((relocation
+ addend
) & mask
) != 0)
12918 (*_bfd_error_handler
)
12919 (_("%B: error: relocation %s not a multiple of %d"),
12921 ppc64_elf_howto_table
[r_type
]->name
,
12923 bfd_set_error (bfd_error_bad_value
);
12930 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12931 because such sections are not SEC_ALLOC and thus ld.so will
12932 not process them. */
12933 if (unresolved_reloc
12934 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
12935 && h
->elf
.def_dynamic
))
12937 (*_bfd_error_handler
)
12938 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12941 (long) rel
->r_offset
,
12942 ppc64_elf_howto_table
[(int) r_type
]->name
,
12943 h
->elf
.root
.root
.string
);
12947 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
12955 if (r
!= bfd_reloc_ok
)
12957 if (sym_name
== NULL
)
12958 sym_name
= "(null)";
12959 if (r
== bfd_reloc_overflow
)
12964 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12965 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
12967 /* Assume this is a call protected by other code that
12968 detects the symbol is undefined. If this is the case,
12969 we can safely ignore the overflow. If not, the
12970 program is hosed anyway, and a little warning isn't
12976 if (!((*info
->callbacks
->reloc_overflow
)
12977 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
12978 ppc64_elf_howto_table
[r_type
]->name
,
12979 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
12984 (*_bfd_error_handler
)
12985 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12988 (long) rel
->r_offset
,
12989 ppc64_elf_howto_table
[r_type
]->name
,
12997 /* If we're emitting relocations, then shortly after this function
12998 returns, reloc offsets and addends for this section will be
12999 adjusted. Worse, reloc symbol indices will be for the output
13000 file rather than the input. Save a copy of the relocs for
13001 opd_entry_value. */
13002 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13005 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13006 rel
= bfd_alloc (input_bfd
, amt
);
13007 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13008 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13011 memcpy (rel
, relocs
, amt
);
13016 /* Adjust the value of any local symbols in opd sections. */
13019 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13020 const char *name ATTRIBUTE_UNUSED
,
13021 Elf_Internal_Sym
*elfsym
,
13022 asection
*input_sec
,
13023 struct elf_link_hash_entry
*h
)
13025 struct _opd_sec_data
*opd
;
13032 opd
= get_opd_info (input_sec
);
13033 if (opd
== NULL
|| opd
->adjust
== NULL
)
13036 value
= elfsym
->st_value
- input_sec
->output_offset
;
13037 if (!info
->relocatable
)
13038 value
-= input_sec
->output_section
->vma
;
13040 adjust
= opd
->adjust
[value
/ 8];
13044 elfsym
->st_value
+= adjust
;
13048 /* Finish up dynamic symbol handling. We set the contents of various
13049 dynamic sections here. */
13052 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13053 struct bfd_link_info
*info
,
13054 struct elf_link_hash_entry
*h
,
13055 Elf_Internal_Sym
*sym
)
13057 struct ppc_link_hash_table
*htab
;
13058 struct plt_entry
*ent
;
13059 Elf_Internal_Rela rela
;
13062 htab
= ppc_hash_table (info
);
13066 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13067 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13069 /* This symbol has an entry in the procedure linkage
13070 table. Set it up. */
13071 if (!htab
->elf
.dynamic_sections_created
13072 || h
->dynindx
== -1)
13074 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13076 && (h
->root
.type
== bfd_link_hash_defined
13077 || h
->root
.type
== bfd_link_hash_defweak
));
13078 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13079 + htab
->iplt
->output_offset
13080 + ent
->plt
.offset
);
13081 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13082 rela
.r_addend
= (h
->root
.u
.def
.value
13083 + h
->root
.u
.def
.section
->output_offset
13084 + h
->root
.u
.def
.section
->output_section
->vma
13086 loc
= (htab
->reliplt
->contents
13087 + (htab
->reliplt
->reloc_count
++
13088 * sizeof (Elf64_External_Rela
)));
13092 rela
.r_offset
= (htab
->plt
->output_section
->vma
13093 + htab
->plt
->output_offset
13094 + ent
->plt
.offset
);
13095 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13096 rela
.r_addend
= ent
->addend
;
13097 loc
= (htab
->relplt
->contents
13098 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13099 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13101 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13106 /* This symbol needs a copy reloc. Set it up. */
13108 if (h
->dynindx
== -1
13109 || (h
->root
.type
!= bfd_link_hash_defined
13110 && h
->root
.type
!= bfd_link_hash_defweak
)
13111 || htab
->relbss
== NULL
)
13114 rela
.r_offset
= (h
->root
.u
.def
.value
13115 + h
->root
.u
.def
.section
->output_section
->vma
13116 + h
->root
.u
.def
.section
->output_offset
);
13117 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13119 loc
= htab
->relbss
->contents
;
13120 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13121 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13124 /* Mark some specially defined symbols as absolute. */
13125 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13126 sym
->st_shndx
= SHN_ABS
;
13131 /* Used to decide how to sort relocs in an optimal manner for the
13132 dynamic linker, before writing them out. */
13134 static enum elf_reloc_type_class
13135 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13137 enum elf_ppc64_reloc_type r_type
;
13139 r_type
= ELF64_R_TYPE (rela
->r_info
);
13142 case R_PPC64_RELATIVE
:
13143 return reloc_class_relative
;
13144 case R_PPC64_JMP_SLOT
:
13145 return reloc_class_plt
;
13147 return reloc_class_copy
;
13149 return reloc_class_normal
;
13153 /* Finish up the dynamic sections. */
13156 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13157 struct bfd_link_info
*info
)
13159 struct ppc_link_hash_table
*htab
;
13163 htab
= ppc_hash_table (info
);
13167 dynobj
= htab
->elf
.dynobj
;
13168 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13170 if (htab
->elf
.dynamic_sections_created
)
13172 Elf64_External_Dyn
*dyncon
, *dynconend
;
13174 if (sdyn
== NULL
|| htab
->got
== NULL
)
13177 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13178 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13179 for (; dyncon
< dynconend
; dyncon
++)
13181 Elf_Internal_Dyn dyn
;
13184 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13191 case DT_PPC64_GLINK
:
13193 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13194 /* We stupidly defined DT_PPC64_GLINK to be the start
13195 of glink rather than the first entry point, which is
13196 what ld.so needs, and now have a bigger stub to
13197 support automatic multiple TOCs. */
13198 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13202 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13205 dyn
.d_un
.d_ptr
= s
->vma
;
13208 case DT_PPC64_OPDSZ
:
13209 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13212 dyn
.d_un
.d_val
= s
->size
;
13217 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13222 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13226 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13230 /* Don't count procedure linkage table relocs in the
13231 overall reloc count. */
13235 dyn
.d_un
.d_val
-= s
->size
;
13239 /* We may not be using the standard ELF linker script.
13240 If .rela.plt is the first .rela section, we adjust
13241 DT_RELA to not include it. */
13245 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13247 dyn
.d_un
.d_ptr
+= s
->size
;
13251 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13255 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13257 /* Fill in the first entry in the global offset table.
13258 We use it to hold the link-time TOCbase. */
13259 bfd_put_64 (output_bfd
,
13260 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13261 htab
->got
->contents
);
13263 /* Set .got entry size. */
13264 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13267 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13269 /* Set .plt entry size. */
13270 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13274 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13275 brlt ourselves if emitrelocations. */
13276 if (htab
->brlt
!= NULL
13277 && htab
->brlt
->reloc_count
!= 0
13278 && !_bfd_elf_link_output_relocs (output_bfd
,
13280 &elf_section_data (htab
->brlt
)->rel_hdr
,
13281 elf_section_data (htab
->brlt
)->relocs
,
13285 if (htab
->glink
!= NULL
13286 && htab
->glink
->reloc_count
!= 0
13287 && !_bfd_elf_link_output_relocs (output_bfd
,
13289 &elf_section_data (htab
->glink
)->rel_hdr
,
13290 elf_section_data (htab
->glink
)->relocs
,
13294 /* We need to handle writing out multiple GOT sections ourselves,
13295 since we didn't add them to DYNOBJ. We know dynobj is the first
13297 while ((dynobj
= dynobj
->link_next
) != NULL
)
13301 if (!is_ppc64_elf (dynobj
))
13304 s
= ppc64_elf_tdata (dynobj
)->got
;
13307 && s
->output_section
!= bfd_abs_section_ptr
13308 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13309 s
->contents
, s
->output_offset
,
13312 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13315 && s
->output_section
!= bfd_abs_section_ptr
13316 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13317 s
->contents
, s
->output_offset
,
13325 #include "elf64-target.h"