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
;
7849 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7852 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7854 struct ppc_link_hash_entry
*eh
;
7855 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7858 if (h
->root
.type
== bfd_link_hash_indirect
)
7861 if (h
->root
.type
== bfd_link_hash_warning
)
7862 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7864 if (h
->root
.type
!= bfd_link_hash_defined
7865 && h
->root
.type
!= bfd_link_hash_defweak
)
7868 eh
= (struct ppc_link_hash_entry
*) h
;
7869 if (eh
->adjust_done
)
7872 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7874 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7875 i
= toc_inf
->toc
->rawsize
>> 3;
7877 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7879 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
7881 (*_bfd_error_handler
)
7882 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7885 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
7886 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7889 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7890 eh
->adjust_done
= 1;
7892 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7893 toc_inf
->global_toc_syms
= TRUE
;
7898 /* Examine all relocs referencing .toc sections in order to remove
7899 unused .toc entries. */
7902 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7905 struct adjust_toc_info toc_inf
;
7906 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7908 htab
->do_toc_opt
= 1;
7909 toc_inf
.global_toc_syms
= TRUE
;
7910 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7912 asection
*toc
, *sec
;
7913 Elf_Internal_Shdr
*symtab_hdr
;
7914 Elf_Internal_Sym
*local_syms
;
7915 struct elf_link_hash_entry
**sym_hashes
;
7916 Elf_Internal_Rela
*relstart
, *rel
;
7917 unsigned long *skip
, *drop
;
7918 unsigned char *used
;
7919 unsigned char *keep
, last
, some_unused
;
7921 if (!is_ppc64_elf (ibfd
))
7924 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7927 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7928 || elf_discarded_section (toc
))
7932 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7933 sym_hashes
= elf_sym_hashes (ibfd
);
7935 /* Look at sections dropped from the final link. */
7938 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7940 if (sec
->reloc_count
== 0
7941 || !elf_discarded_section (sec
)
7942 || get_opd_info (sec
)
7943 || (sec
->flags
& SEC_ALLOC
) == 0
7944 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7947 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7948 if (relstart
== NULL
)
7951 /* Run through the relocs to see which toc entries might be
7953 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7955 enum elf_ppc64_reloc_type r_type
;
7956 unsigned long r_symndx
;
7958 struct elf_link_hash_entry
*h
;
7959 Elf_Internal_Sym
*sym
;
7962 r_type
= ELF64_R_TYPE (rel
->r_info
);
7969 case R_PPC64_TOC16_LO
:
7970 case R_PPC64_TOC16_HI
:
7971 case R_PPC64_TOC16_HA
:
7972 case R_PPC64_TOC16_DS
:
7973 case R_PPC64_TOC16_LO_DS
:
7977 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7978 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7986 val
= h
->root
.u
.def
.value
;
7988 val
= sym
->st_value
;
7989 val
+= rel
->r_addend
;
7991 if (val
>= toc
->size
)
7994 /* Anything in the toc ought to be aligned to 8 bytes.
7995 If not, don't mark as unused. */
8001 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8006 skip
[val
>> 3] = ref_from_discarded
;
8009 if (elf_section_data (sec
)->relocs
!= relstart
)
8013 /* For largetoc loads of address constants, we can convert
8014 . addis rx,2,addr@got@ha
8015 . ld ry,addr@got@l(rx)
8017 . addis rx,2,addr@toc@ha
8018 . addi ry,rx,addr@toc@l
8019 when addr is within 2G of the toc pointer. This then means
8020 that the word storing "addr" in the toc is no longer needed. */
8022 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8023 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8024 && toc
->reloc_count
!= 0)
8026 /* Read toc relocs. */
8027 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8029 if (relstart
== NULL
)
8032 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
8034 enum elf_ppc64_reloc_type r_type
;
8035 unsigned long r_symndx
;
8037 struct elf_link_hash_entry
*h
;
8038 Elf_Internal_Sym
*sym
;
8041 r_type
= ELF64_R_TYPE (rel
->r_info
);
8042 if (r_type
!= R_PPC64_ADDR64
)
8045 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8046 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8050 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8054 val
= h
->root
.u
.def
.value
;
8056 val
= sym
->st_value
;
8057 val
+= rel
->r_addend
;
8058 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8060 /* We don't yet know the exact toc pointer value, but we
8061 know it will be somewhere in the toc section. Don't
8062 optimize if the difference from any possible toc
8063 pointer is outside [ff..f80008000, 7fff7fff]. */
8064 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8065 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8068 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8069 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8074 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8079 skip
[rel
->r_offset
>> 3]
8080 |= can_optimize
| ((rel
- relstart
) << 2);
8083 if (elf_section_data (toc
)->relocs
!= relstart
)
8090 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8094 if (local_syms
!= NULL
8095 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8099 && elf_section_data (sec
)->relocs
!= relstart
)
8106 /* Now check all kept sections that might reference the toc.
8107 Check the toc itself last. */
8108 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8111 sec
= (sec
== toc
? NULL
8112 : sec
->next
== NULL
? toc
8113 : sec
->next
== toc
&& toc
->next
? toc
->next
8118 if (sec
->reloc_count
== 0
8119 || elf_discarded_section (sec
)
8120 || get_opd_info (sec
)
8121 || (sec
->flags
& SEC_ALLOC
) == 0
8122 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8125 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8127 if (relstart
== NULL
)
8130 /* Mark toc entries referenced as used. */
8133 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8135 enum elf_ppc64_reloc_type r_type
;
8136 unsigned long r_symndx
;
8138 struct elf_link_hash_entry
*h
;
8139 Elf_Internal_Sym
*sym
;
8142 r_type
= ELF64_R_TYPE (rel
->r_info
);
8146 case R_PPC64_TOC16_LO
:
8147 case R_PPC64_TOC16_HI
:
8148 case R_PPC64_TOC16_HA
:
8149 case R_PPC64_TOC16_DS
:
8150 case R_PPC64_TOC16_LO_DS
:
8151 /* In case we're taking addresses of toc entries. */
8152 case R_PPC64_ADDR64
:
8159 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8160 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8171 val
= h
->root
.u
.def
.value
;
8173 val
= sym
->st_value
;
8174 val
+= rel
->r_addend
;
8176 if (val
>= toc
->size
)
8179 if ((skip
[val
>> 3] & can_optimize
) != 0)
8186 case R_PPC64_TOC16_HA
:
8189 case R_PPC64_TOC16_LO_DS
:
8190 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8191 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8193 if ((opc
& (0x3f << 2)) == (58u << 2))
8198 /* Wrong sort of reloc, or not a ld. We may
8199 as well clear ref_from_discarded too. */
8204 /* For the toc section, we only mark as used if
8205 this entry itself isn't unused. */
8208 && (used
[rel
->r_offset
>> 3]
8209 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8210 /* Do all the relocs again, to catch reference
8218 if (elf_section_data (sec
)->relocs
!= relstart
)
8222 /* Merge the used and skip arrays. Assume that TOC
8223 doublewords not appearing as either used or unused belong
8224 to to an entry more than one doubleword in size. */
8225 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8226 drop
< skip
+ (toc
->size
+ 7) / 8;
8231 *drop
&= ~ref_from_discarded
;
8232 if ((*drop
& can_optimize
) != 0)
8239 last
= ref_from_discarded
;
8249 bfd_byte
*contents
, *src
;
8251 bfd_boolean local_toc_syms
= FALSE
;
8253 /* Shuffle the toc contents, and at the same time convert the
8254 skip array from booleans into offsets. */
8255 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8258 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8260 for (src
= contents
, off
= 0, drop
= skip
;
8261 src
< contents
+ toc
->size
;
8264 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8269 memcpy (src
- off
, src
, 8);
8273 toc
->rawsize
= toc
->size
;
8274 toc
->size
= src
- contents
- off
;
8276 /* Adjust addends for relocs against the toc section sym,
8277 and optimize any accesses we can. */
8278 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8280 if (sec
->reloc_count
== 0
8281 || elf_discarded_section (sec
))
8284 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8286 if (relstart
== NULL
)
8289 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8291 enum elf_ppc64_reloc_type r_type
;
8292 unsigned long r_symndx
;
8294 struct elf_link_hash_entry
*h
;
8295 Elf_Internal_Sym
*sym
;
8298 r_type
= ELF64_R_TYPE (rel
->r_info
);
8305 case R_PPC64_TOC16_LO
:
8306 case R_PPC64_TOC16_HI
:
8307 case R_PPC64_TOC16_HA
:
8308 case R_PPC64_TOC16_DS
:
8309 case R_PPC64_TOC16_LO_DS
:
8310 case R_PPC64_ADDR64
:
8314 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8315 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8323 val
= h
->root
.u
.def
.value
;
8326 val
= sym
->st_value
;
8328 local_toc_syms
= TRUE
;
8331 val
+= rel
->r_addend
;
8333 if (val
> toc
->rawsize
)
8335 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8337 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8339 Elf_Internal_Rela
*tocrel
8340 = elf_section_data (toc
)->relocs
+ (skip
[val
>> 3] >> 2);
8341 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8345 case R_PPC64_TOC16_HA
:
8346 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8349 case R_PPC64_TOC16_LO_DS
:
8350 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8356 rel
->r_addend
= tocrel
->r_addend
;
8357 elf_section_data (sec
)->relocs
= relstart
;
8361 if (h
!= NULL
|| sym
->st_value
!= 0)
8364 rel
->r_addend
-= skip
[val
>> 3];
8365 elf_section_data (sec
)->relocs
= relstart
;
8368 if (elf_section_data (sec
)->relocs
!= relstart
)
8372 /* We shouldn't have local or global symbols defined in the TOC,
8373 but handle them anyway. */
8376 Elf_Internal_Sym
*sym
;
8378 for (sym
= local_syms
;
8379 sym
< local_syms
+ symtab_hdr
->sh_info
;
8381 if (sym
->st_value
!= 0
8382 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8386 if (sym
->st_value
> toc
->rawsize
)
8387 i
= toc
->rawsize
>> 3;
8389 i
= sym
->st_value
>> 3;
8391 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8393 (*_bfd_error_handler
)
8394 (_("%s defined on removed toc entry"),
8395 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8398 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8399 sym
->st_value
= (bfd_vma
) i
<< 3;
8402 sym
->st_value
-= skip
[i
];
8403 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8407 /* Adjust any global syms defined in this toc input section. */
8408 if (toc_inf
.global_toc_syms
)
8411 toc_inf
.skip
= skip
;
8412 toc_inf
.global_toc_syms
= FALSE
;
8413 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8417 if (toc
->reloc_count
!= 0)
8419 Elf_Internal_Rela
*wrel
;
8422 /* Read toc relocs. */
8423 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8425 if (relstart
== NULL
)
8428 /* Remove unused toc relocs, and adjust those we keep. */
8430 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
8431 if ((skip
[rel
->r_offset
>> 3]
8432 & (ref_from_discarded
| can_optimize
)) == 0)
8434 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8435 wrel
->r_info
= rel
->r_info
;
8436 wrel
->r_addend
= rel
->r_addend
;
8439 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8440 &local_syms
, NULL
, NULL
))
8443 toc
->reloc_count
= wrel
- relstart
;
8444 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
8445 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
8446 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
8450 if (local_syms
!= NULL
8451 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8453 if (!info
->keep_memory
)
8456 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8464 /* Return true iff input section I references the TOC using
8465 instructions limited to +/-32k offsets. */
8468 ppc64_elf_has_small_toc_reloc (asection
*i
)
8470 return (is_ppc64_elf (i
->owner
)
8471 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8474 /* Allocate space for one GOT entry. */
8477 allocate_got (struct elf_link_hash_entry
*h
,
8478 struct bfd_link_info
*info
,
8479 struct got_entry
*gent
)
8481 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8483 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8484 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8486 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8487 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8488 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8490 gent
->got
.offset
= got
->size
;
8491 got
->size
+= entsize
;
8493 dyn
= htab
->elf
.dynamic_sections_created
;
8495 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8496 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8497 || h
->root
.type
!= bfd_link_hash_undefweak
))
8499 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8500 relgot
->size
+= rentsize
;
8502 else if (h
->type
== STT_GNU_IFUNC
)
8504 asection
*relgot
= htab
->reliplt
;
8505 relgot
->size
+= rentsize
;
8506 htab
->got_reli_size
+= rentsize
;
8510 /* This function merges got entries in the same toc group. */
8513 merge_got_entries (struct got_entry
**pent
)
8515 struct got_entry
*ent
, *ent2
;
8517 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8518 if (!ent
->is_indirect
)
8519 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8520 if (!ent2
->is_indirect
8521 && ent2
->addend
== ent
->addend
8522 && ent2
->tls_type
== ent
->tls_type
8523 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8525 ent2
->is_indirect
= TRUE
;
8526 ent2
->got
.ent
= ent
;
8530 /* Allocate space in .plt, .got and associated reloc sections for
8534 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8536 struct bfd_link_info
*info
;
8537 struct ppc_link_hash_table
*htab
;
8539 struct ppc_link_hash_entry
*eh
;
8540 struct ppc_dyn_relocs
*p
;
8541 struct got_entry
**pgent
, *gent
;
8543 if (h
->root
.type
== bfd_link_hash_indirect
)
8546 if (h
->root
.type
== bfd_link_hash_warning
)
8547 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8549 info
= (struct bfd_link_info
*) inf
;
8550 htab
= ppc_hash_table (info
);
8554 if ((htab
->elf
.dynamic_sections_created
8556 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8557 || h
->type
== STT_GNU_IFUNC
)
8559 struct plt_entry
*pent
;
8560 bfd_boolean doneone
= FALSE
;
8561 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8562 if (pent
->plt
.refcount
> 0)
8564 if (!htab
->elf
.dynamic_sections_created
8565 || h
->dynindx
== -1)
8568 pent
->plt
.offset
= s
->size
;
8569 s
->size
+= PLT_ENTRY_SIZE
;
8574 /* If this is the first .plt entry, make room for the special
8578 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8580 pent
->plt
.offset
= s
->size
;
8582 /* Make room for this entry. */
8583 s
->size
+= PLT_ENTRY_SIZE
;
8585 /* Make room for the .glink code. */
8588 s
->size
+= GLINK_CALL_STUB_SIZE
;
8589 /* We need bigger stubs past index 32767. */
8590 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8594 /* We also need to make an entry in the .rela.plt section. */
8597 s
->size
+= sizeof (Elf64_External_Rela
);
8601 pent
->plt
.offset
= (bfd_vma
) -1;
8604 h
->plt
.plist
= NULL
;
8610 h
->plt
.plist
= NULL
;
8614 eh
= (struct ppc_link_hash_entry
*) h
;
8615 /* Run through the TLS GD got entries first if we're changing them
8617 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8618 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8619 if (gent
->got
.refcount
> 0
8620 && (gent
->tls_type
& TLS_GD
) != 0)
8622 /* This was a GD entry that has been converted to TPREL. If
8623 there happens to be a TPREL entry we can use that one. */
8624 struct got_entry
*ent
;
8625 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8626 if (ent
->got
.refcount
> 0
8627 && (ent
->tls_type
& TLS_TPREL
) != 0
8628 && ent
->addend
== gent
->addend
8629 && ent
->owner
== gent
->owner
)
8631 gent
->got
.refcount
= 0;
8635 /* If not, then we'll be using our own TPREL entry. */
8636 if (gent
->got
.refcount
!= 0)
8637 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8640 /* Remove any list entry that won't generate a word in the GOT before
8641 we call merge_got_entries. Otherwise we risk merging to empty
8643 pgent
= &h
->got
.glist
;
8644 while ((gent
= *pgent
) != NULL
)
8645 if (gent
->got
.refcount
> 0)
8647 if ((gent
->tls_type
& TLS_LD
) != 0
8650 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8651 *pgent
= gent
->next
;
8654 pgent
= &gent
->next
;
8657 *pgent
= gent
->next
;
8659 if (!htab
->do_multi_toc
)
8660 merge_got_entries (&h
->got
.glist
);
8662 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8663 if (!gent
->is_indirect
)
8665 /* Make sure this symbol is output as a dynamic symbol.
8666 Undefined weak syms won't yet be marked as dynamic,
8667 nor will all TLS symbols. */
8668 if (h
->dynindx
== -1
8670 && h
->type
!= STT_GNU_IFUNC
8671 && htab
->elf
.dynamic_sections_created
)
8673 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8677 if (!is_ppc64_elf (gent
->owner
))
8680 allocate_got (h
, info
, gent
);
8683 if (eh
->dyn_relocs
== NULL
8684 || (!htab
->elf
.dynamic_sections_created
8685 && h
->type
!= STT_GNU_IFUNC
))
8688 /* In the shared -Bsymbolic case, discard space allocated for
8689 dynamic pc-relative relocs against symbols which turn out to be
8690 defined in regular objects. For the normal shared case, discard
8691 space for relocs that have become local due to symbol visibility
8696 /* Relocs that use pc_count are those that appear on a call insn,
8697 or certain REL relocs (see must_be_dyn_reloc) that can be
8698 generated via assembly. We want calls to protected symbols to
8699 resolve directly to the function rather than going via the plt.
8700 If people want function pointer comparisons to work as expected
8701 then they should avoid writing weird assembly. */
8702 if (SYMBOL_CALLS_LOCAL (info
, h
))
8704 struct ppc_dyn_relocs
**pp
;
8706 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8708 p
->count
-= p
->pc_count
;
8717 /* Also discard relocs on undefined weak syms with non-default
8719 if (eh
->dyn_relocs
!= NULL
8720 && h
->root
.type
== bfd_link_hash_undefweak
)
8722 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8723 eh
->dyn_relocs
= NULL
;
8725 /* Make sure this symbol is output as a dynamic symbol.
8726 Undefined weak syms won't yet be marked as dynamic. */
8727 else if (h
->dynindx
== -1
8728 && !h
->forced_local
)
8730 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8735 else if (h
->type
== STT_GNU_IFUNC
)
8737 if (!h
->non_got_ref
)
8738 eh
->dyn_relocs
= NULL
;
8740 else if (ELIMINATE_COPY_RELOCS
)
8742 /* For the non-shared case, discard space for relocs against
8743 symbols which turn out to need copy relocs or are not
8749 /* Make sure this symbol is output as a dynamic symbol.
8750 Undefined weak syms won't yet be marked as dynamic. */
8751 if (h
->dynindx
== -1
8752 && !h
->forced_local
)
8754 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8758 /* If that succeeded, we know we'll be keeping all the
8760 if (h
->dynindx
!= -1)
8764 eh
->dyn_relocs
= NULL
;
8769 /* Finally, allocate space. */
8770 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8772 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8773 if (!htab
->elf
.dynamic_sections_created
)
8774 sreloc
= htab
->reliplt
;
8775 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8781 /* Find any dynamic relocs that apply to read-only sections. */
8784 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8786 struct ppc_link_hash_entry
*eh
;
8787 struct ppc_dyn_relocs
*p
;
8789 if (h
->root
.type
== bfd_link_hash_warning
)
8790 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8792 eh
= (struct ppc_link_hash_entry
*) h
;
8793 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8795 asection
*s
= p
->sec
->output_section
;
8797 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8799 struct bfd_link_info
*info
= inf
;
8801 info
->flags
|= DF_TEXTREL
;
8803 /* Not an error, just cut short the traversal. */
8810 /* Set the sizes of the dynamic sections. */
8813 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8814 struct bfd_link_info
*info
)
8816 struct ppc_link_hash_table
*htab
;
8821 struct got_entry
*first_tlsld
;
8823 htab
= ppc_hash_table (info
);
8827 dynobj
= htab
->elf
.dynobj
;
8831 if (htab
->elf
.dynamic_sections_created
)
8833 /* Set the contents of the .interp section to the interpreter. */
8834 if (info
->executable
)
8836 s
= bfd_get_section_by_name (dynobj
, ".interp");
8839 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8840 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8844 /* Set up .got offsets for local syms, and space for local dynamic
8846 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8848 struct got_entry
**lgot_ents
;
8849 struct got_entry
**end_lgot_ents
;
8850 struct plt_entry
**local_plt
;
8851 struct plt_entry
**end_local_plt
;
8852 unsigned char *lgot_masks
;
8853 bfd_size_type locsymcount
;
8854 Elf_Internal_Shdr
*symtab_hdr
;
8857 if (!is_ppc64_elf (ibfd
))
8860 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8862 struct ppc_dyn_relocs
*p
;
8864 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8866 if (!bfd_is_abs_section (p
->sec
)
8867 && bfd_is_abs_section (p
->sec
->output_section
))
8869 /* Input section has been discarded, either because
8870 it is a copy of a linkonce section or due to
8871 linker script /DISCARD/, so we'll be discarding
8874 else if (p
->count
!= 0)
8876 srel
= elf_section_data (p
->sec
)->sreloc
;
8877 if (!htab
->elf
.dynamic_sections_created
)
8878 srel
= htab
->reliplt
;
8879 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8880 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8881 info
->flags
|= DF_TEXTREL
;
8886 lgot_ents
= elf_local_got_ents (ibfd
);
8890 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8891 locsymcount
= symtab_hdr
->sh_info
;
8892 end_lgot_ents
= lgot_ents
+ locsymcount
;
8893 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8894 end_local_plt
= local_plt
+ locsymcount
;
8895 lgot_masks
= (unsigned char *) end_local_plt
;
8896 s
= ppc64_elf_tdata (ibfd
)->got
;
8897 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8898 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8900 struct got_entry
**pent
, *ent
;
8903 while ((ent
= *pent
) != NULL
)
8904 if (ent
->got
.refcount
> 0)
8906 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8908 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8913 unsigned int num
= 1;
8914 ent
->got
.offset
= s
->size
;
8915 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8919 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8920 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8923 += num
* sizeof (Elf64_External_Rela
);
8925 += num
* sizeof (Elf64_External_Rela
);
8934 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8935 for (; local_plt
< end_local_plt
; ++local_plt
)
8937 struct plt_entry
*ent
;
8939 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8940 if (ent
->plt
.refcount
> 0)
8943 ent
->plt
.offset
= s
->size
;
8944 s
->size
+= PLT_ENTRY_SIZE
;
8946 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8949 ent
->plt
.offset
= (bfd_vma
) -1;
8953 /* Allocate global sym .plt and .got entries, and space for global
8954 sym dynamic relocs. */
8955 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8958 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8960 struct got_entry
*ent
;
8962 if (!is_ppc64_elf (ibfd
))
8965 ent
= ppc64_tlsld_got (ibfd
);
8966 if (ent
->got
.refcount
> 0)
8968 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
8970 ent
->is_indirect
= TRUE
;
8971 ent
->got
.ent
= first_tlsld
;
8975 if (first_tlsld
== NULL
)
8977 s
= ppc64_elf_tdata (ibfd
)->got
;
8978 ent
->got
.offset
= s
->size
;
8983 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8984 srel
->size
+= sizeof (Elf64_External_Rela
);
8989 ent
->got
.offset
= (bfd_vma
) -1;
8992 /* We now have determined the sizes of the various dynamic sections.
8993 Allocate memory for them. */
8995 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8997 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9000 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9001 /* These haven't been allocated yet; don't strip. */
9003 else if (s
== htab
->got
9007 || s
== htab
->dynbss
)
9009 /* Strip this section if we don't need it; see the
9012 else if (CONST_STRNEQ (s
->name
, ".rela"))
9016 if (s
!= htab
->relplt
)
9019 /* We use the reloc_count field as a counter if we need
9020 to copy relocs into the output file. */
9026 /* It's not one of our sections, so don't allocate space. */
9032 /* If we don't need this section, strip it from the
9033 output file. This is mostly to handle .rela.bss and
9034 .rela.plt. We must create both sections in
9035 create_dynamic_sections, because they must be created
9036 before the linker maps input sections to output
9037 sections. The linker does that before
9038 adjust_dynamic_symbol is called, and it is that
9039 function which decides whether anything needs to go
9040 into these sections. */
9041 s
->flags
|= SEC_EXCLUDE
;
9045 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9048 /* Allocate memory for the section contents. We use bfd_zalloc
9049 here in case unused entries are not reclaimed before the
9050 section's contents are written out. This should not happen,
9051 but this way if it does we get a R_PPC64_NONE reloc in .rela
9052 sections instead of garbage.
9053 We also rely on the section contents being zero when writing
9055 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9056 if (s
->contents
== NULL
)
9060 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9062 if (!is_ppc64_elf (ibfd
))
9065 s
= ppc64_elf_tdata (ibfd
)->got
;
9066 if (s
!= NULL
&& s
!= htab
->got
)
9069 s
->flags
|= SEC_EXCLUDE
;
9072 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9073 if (s
->contents
== NULL
)
9077 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9081 s
->flags
|= SEC_EXCLUDE
;
9084 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9085 if (s
->contents
== NULL
)
9093 if (htab
->elf
.dynamic_sections_created
)
9095 /* Add some entries to the .dynamic section. We fill in the
9096 values later, in ppc64_elf_finish_dynamic_sections, but we
9097 must add the entries now so that we get the correct size for
9098 the .dynamic section. The DT_DEBUG entry is filled in by the
9099 dynamic linker and used by the debugger. */
9100 #define add_dynamic_entry(TAG, VAL) \
9101 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9103 if (info
->executable
)
9105 if (!add_dynamic_entry (DT_DEBUG
, 0))
9109 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9111 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9112 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9113 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9114 || !add_dynamic_entry (DT_JMPREL
, 0)
9115 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9121 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9122 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9126 if (!htab
->no_tls_get_addr_opt
9127 && htab
->tls_get_addr_fd
!= NULL
9128 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9129 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9134 if (!add_dynamic_entry (DT_RELA
, 0)
9135 || !add_dynamic_entry (DT_RELASZ
, 0)
9136 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9139 /* If any dynamic relocs apply to a read-only section,
9140 then we need a DT_TEXTREL entry. */
9141 if ((info
->flags
& DF_TEXTREL
) == 0)
9142 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9144 if ((info
->flags
& DF_TEXTREL
) != 0)
9146 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9151 #undef add_dynamic_entry
9156 /* Determine the type of stub needed, if any, for a call. */
9158 static inline enum ppc_stub_type
9159 ppc_type_of_stub (asection
*input_sec
,
9160 const Elf_Internal_Rela
*rel
,
9161 struct ppc_link_hash_entry
**hash
,
9162 struct plt_entry
**plt_ent
,
9163 bfd_vma destination
)
9165 struct ppc_link_hash_entry
*h
= *hash
;
9167 bfd_vma branch_offset
;
9168 bfd_vma max_branch_offset
;
9169 enum elf_ppc64_reloc_type r_type
;
9173 struct plt_entry
*ent
;
9174 struct ppc_link_hash_entry
*fdh
= h
;
9176 && h
->oh
->is_func_descriptor
)
9178 fdh
= ppc_follow_link (h
->oh
);
9182 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9183 if (ent
->addend
== rel
->r_addend
9184 && ent
->plt
.offset
!= (bfd_vma
) -1)
9187 return ppc_stub_plt_call
;
9190 /* Here, we know we don't have a plt entry. If we don't have a
9191 either a defined function descriptor or a defined entry symbol
9192 in a regular object file, then it is pointless trying to make
9193 any other type of stub. */
9194 if (!is_static_defined (&fdh
->elf
)
9195 && !is_static_defined (&h
->elf
))
9196 return ppc_stub_none
;
9198 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9200 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9201 struct plt_entry
**local_plt
= (struct plt_entry
**)
9202 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9203 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9205 if (local_plt
[r_symndx
] != NULL
)
9207 struct plt_entry
*ent
;
9209 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9210 if (ent
->addend
== rel
->r_addend
9211 && ent
->plt
.offset
!= (bfd_vma
) -1)
9214 return ppc_stub_plt_call
;
9219 /* Determine where the call point is. */
9220 location
= (input_sec
->output_offset
9221 + input_sec
->output_section
->vma
9224 branch_offset
= destination
- location
;
9225 r_type
= ELF64_R_TYPE (rel
->r_info
);
9227 /* Determine if a long branch stub is needed. */
9228 max_branch_offset
= 1 << 25;
9229 if (r_type
!= R_PPC64_REL24
)
9230 max_branch_offset
= 1 << 15;
9232 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9233 /* We need a stub. Figure out whether a long_branch or plt_branch
9235 return ppc_stub_long_branch
;
9237 return ppc_stub_none
;
9240 /* Build a .plt call stub. */
9242 static inline bfd_byte
*
9243 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9245 #define PPC_LO(v) ((v) & 0xffff)
9246 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9247 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9249 if (PPC_HA (offset
) != 0)
9253 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9254 r
[1].r_offset
= r
[0].r_offset
+ 8;
9255 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9256 r
[1].r_addend
= r
[0].r_addend
;
9257 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9259 r
[2].r_offset
= r
[1].r_offset
+ 4;
9260 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9261 r
[2].r_addend
= r
[0].r_addend
;
9265 r
[2].r_offset
= r
[1].r_offset
+ 8;
9266 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9267 r
[2].r_addend
= r
[0].r_addend
+ 8;
9268 r
[3].r_offset
= r
[2].r_offset
+ 4;
9269 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9270 r
[3].r_addend
= r
[0].r_addend
+ 16;
9273 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9274 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9275 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9276 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9278 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9281 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9282 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9283 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9284 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9291 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9292 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9294 r
[1].r_offset
= r
[0].r_offset
+ 4;
9295 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9296 r
[1].r_addend
= r
[0].r_addend
;
9300 r
[1].r_offset
= r
[0].r_offset
+ 8;
9301 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9302 r
[1].r_addend
= r
[0].r_addend
+ 16;
9303 r
[2].r_offset
= r
[1].r_offset
+ 4;
9304 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9305 r
[2].r_addend
= r
[0].r_addend
+ 8;
9308 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9309 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9310 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9312 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9315 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9316 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9317 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9318 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9323 /* Build a special .plt call stub for __tls_get_addr. */
9325 #define LD_R11_0R3 0xe9630000
9326 #define LD_R12_0R3 0xe9830000
9327 #define MR_R0_R3 0x7c601b78
9328 #define CMPDI_R11_0 0x2c2b0000
9329 #define ADD_R3_R12_R13 0x7c6c6a14
9330 #define BEQLR 0x4d820020
9331 #define MR_R3_R0 0x7c030378
9332 #define MFLR_R11 0x7d6802a6
9333 #define STD_R11_0R1 0xf9610000
9334 #define BCTRL 0x4e800421
9335 #define LD_R11_0R1 0xe9610000
9336 #define LD_R2_0R1 0xe8410000
9337 #define MTLR_R11 0x7d6803a6
9339 static inline bfd_byte
*
9340 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9341 Elf_Internal_Rela
*r
)
9343 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9344 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9345 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9346 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9347 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9348 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9349 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9350 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9351 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9354 r
[0].r_offset
+= 9 * 4;
9355 p
= build_plt_stub (obfd
, p
, offset
, r
);
9356 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9358 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9359 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9360 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9361 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9366 static Elf_Internal_Rela
*
9367 get_relocs (asection
*sec
, int count
)
9369 Elf_Internal_Rela
*relocs
;
9370 struct bfd_elf_section_data
*elfsec_data
;
9372 elfsec_data
= elf_section_data (sec
);
9373 relocs
= elfsec_data
->relocs
;
9376 bfd_size_type relsize
;
9377 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9378 relocs
= bfd_alloc (sec
->owner
, relsize
);
9381 elfsec_data
->relocs
= relocs
;
9382 elfsec_data
->rel_hdr
.sh_size
= (sec
->reloc_count
9383 * sizeof (Elf64_External_Rela
));
9384 elfsec_data
->rel_hdr
.sh_entsize
= sizeof (Elf64_External_Rela
);
9385 sec
->reloc_count
= 0;
9387 relocs
+= sec
->reloc_count
;
9388 sec
->reloc_count
+= count
;
9393 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9395 struct ppc_stub_hash_entry
*stub_entry
;
9396 struct ppc_branch_hash_entry
*br_entry
;
9397 struct bfd_link_info
*info
;
9398 struct ppc_link_hash_table
*htab
;
9403 Elf_Internal_Rela
*r
;
9406 /* Massage our args to the form they really have. */
9407 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9410 htab
= ppc_hash_table (info
);
9414 /* Make a note of the offset within the stubs for this entry. */
9415 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9416 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9418 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9419 switch (stub_entry
->stub_type
)
9421 case ppc_stub_long_branch
:
9422 case ppc_stub_long_branch_r2off
:
9423 /* Branches are relative. This is where we are going to. */
9424 off
= dest
= (stub_entry
->target_value
9425 + stub_entry
->target_section
->output_offset
9426 + stub_entry
->target_section
->output_section
->vma
);
9428 /* And this is where we are coming from. */
9429 off
-= (stub_entry
->stub_offset
9430 + stub_entry
->stub_sec
->output_offset
9431 + stub_entry
->stub_sec
->output_section
->vma
);
9434 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9438 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9439 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9440 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9443 if (PPC_HA (r2off
) != 0)
9446 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9449 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9453 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9455 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9457 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9458 stub_entry
->root
.string
);
9459 htab
->stub_error
= TRUE
;
9463 if (info
->emitrelocations
)
9465 r
= get_relocs (stub_entry
->stub_sec
, 1);
9468 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9469 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9471 if (stub_entry
->h
!= NULL
)
9473 struct elf_link_hash_entry
**hashes
;
9474 unsigned long symndx
;
9475 struct ppc_link_hash_entry
*h
;
9477 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9480 bfd_size_type hsize
;
9482 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9483 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9486 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9487 htab
->stub_globals
= 1;
9489 symndx
= htab
->stub_globals
++;
9491 hashes
[symndx
] = &h
->elf
;
9492 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9493 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9494 h
= ppc_follow_link (h
->oh
);
9495 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9496 /* H is an opd symbol. The addend must be zero. */
9500 off
= (h
->elf
.root
.u
.def
.value
9501 + h
->elf
.root
.u
.def
.section
->output_offset
9502 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9509 case ppc_stub_plt_branch
:
9510 case ppc_stub_plt_branch_r2off
:
9511 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9512 stub_entry
->root
.string
+ 9,
9514 if (br_entry
== NULL
)
9516 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9517 stub_entry
->root
.string
);
9518 htab
->stub_error
= TRUE
;
9522 dest
= (stub_entry
->target_value
9523 + stub_entry
->target_section
->output_offset
9524 + stub_entry
->target_section
->output_section
->vma
);
9526 bfd_put_64 (htab
->brlt
->owner
, dest
,
9527 htab
->brlt
->contents
+ br_entry
->offset
);
9529 if (br_entry
->iter
== htab
->stub_iteration
)
9533 if (htab
->relbrlt
!= NULL
)
9535 /* Create a reloc for the branch lookup table entry. */
9536 Elf_Internal_Rela rela
;
9539 rela
.r_offset
= (br_entry
->offset
9540 + htab
->brlt
->output_offset
9541 + htab
->brlt
->output_section
->vma
);
9542 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9543 rela
.r_addend
= dest
;
9545 rl
= htab
->relbrlt
->contents
;
9546 rl
+= (htab
->relbrlt
->reloc_count
++
9547 * sizeof (Elf64_External_Rela
));
9548 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9550 else if (info
->emitrelocations
)
9552 r
= get_relocs (htab
->brlt
, 1);
9555 /* brlt, being SEC_LINKER_CREATED does not go through the
9556 normal reloc processing. Symbols and offsets are not
9557 translated from input file to output file form, so
9558 set up the offset per the output file. */
9559 r
->r_offset
= (br_entry
->offset
9560 + htab
->brlt
->output_offset
9561 + htab
->brlt
->output_section
->vma
);
9562 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9567 dest
= (br_entry
->offset
9568 + htab
->brlt
->output_offset
9569 + htab
->brlt
->output_section
->vma
);
9572 - elf_gp (htab
->brlt
->output_section
->owner
)
9573 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9575 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9577 (*_bfd_error_handler
)
9578 (_("linkage table error against `%s'"),
9579 stub_entry
->root
.string
);
9580 bfd_set_error (bfd_error_bad_value
);
9581 htab
->stub_error
= TRUE
;
9585 if (info
->emitrelocations
)
9587 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9590 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9591 if (bfd_big_endian (info
->output_bfd
))
9593 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9595 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9596 r
[0].r_addend
= dest
;
9597 if (PPC_HA (off
) != 0)
9599 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9600 r
[1].r_offset
= r
[0].r_offset
+ 4;
9601 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9602 r
[1].r_addend
= r
[0].r_addend
;
9606 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9608 if (PPC_HA (off
) != 0)
9611 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9613 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9618 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9625 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9626 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9627 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9630 if (PPC_HA (off
) != 0)
9633 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9635 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9640 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9644 if (PPC_HA (r2off
) != 0)
9647 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9650 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9653 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9655 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9658 case ppc_stub_plt_call
:
9659 if (stub_entry
->h
!= NULL
9660 && stub_entry
->h
->is_func_descriptor
9661 && stub_entry
->h
->oh
!= NULL
)
9663 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9665 /* If the old-ABI "dot-symbol" is undefined make it weak so
9666 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9667 FIXME: We used to define the symbol on one of the call
9668 stubs instead, which is why we test symbol section id
9669 against htab->top_id in various places. Likely all
9670 these checks could now disappear. */
9671 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9672 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9675 /* Now build the stub. */
9676 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9677 if (dest
>= (bfd_vma
) -2)
9681 if (!htab
->elf
.dynamic_sections_created
9682 || stub_entry
->h
== NULL
9683 || stub_entry
->h
->elf
.dynindx
== -1)
9686 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9688 if (stub_entry
->h
== NULL
9689 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9691 Elf_Internal_Rela rela
;
9694 rela
.r_offset
= dest
;
9695 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9696 rela
.r_addend
= (stub_entry
->target_value
9697 + stub_entry
->target_section
->output_offset
9698 + stub_entry
->target_section
->output_section
->vma
);
9700 rl
= (htab
->reliplt
->contents
9701 + (htab
->reliplt
->reloc_count
++
9702 * sizeof (Elf64_External_Rela
)));
9703 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9704 stub_entry
->plt_ent
->plt
.offset
|= 1;
9708 - elf_gp (plt
->output_section
->owner
)
9709 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9711 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9713 (*_bfd_error_handler
)
9714 (_("linkage table error against `%s'"),
9715 stub_entry
->h
!= NULL
9716 ? stub_entry
->h
->elf
.root
.root
.string
9718 bfd_set_error (bfd_error_bad_value
);
9719 htab
->stub_error
= TRUE
;
9724 if (info
->emitrelocations
)
9726 r
= get_relocs (stub_entry
->stub_sec
,
9727 (2 + (PPC_HA (off
) != 0)
9728 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9731 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9732 if (bfd_big_endian (info
->output_bfd
))
9734 r
[0].r_addend
= dest
;
9736 if (stub_entry
->h
!= NULL
9737 && (stub_entry
->h
== htab
->tls_get_addr_fd
9738 || stub_entry
->h
== htab
->tls_get_addr
)
9739 && !htab
->no_tls_get_addr_opt
)
9740 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9742 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9751 stub_entry
->stub_sec
->size
+= size
;
9753 if (htab
->emit_stub_syms
)
9755 struct elf_link_hash_entry
*h
;
9758 const char *const stub_str
[] = { "long_branch",
9759 "long_branch_r2off",
9764 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9765 len2
= strlen (stub_entry
->root
.string
);
9766 name
= bfd_malloc (len1
+ len2
+ 2);
9769 memcpy (name
, stub_entry
->root
.string
, 9);
9770 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9771 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9772 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9775 if (h
->root
.type
== bfd_link_hash_new
)
9777 h
->root
.type
= bfd_link_hash_defined
;
9778 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9779 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9782 h
->ref_regular_nonweak
= 1;
9783 h
->forced_local
= 1;
9791 /* As above, but don't actually build the stub. Just bump offset so
9792 we know stub section sizes, and select plt_branch stubs where
9793 long_branch stubs won't do. */
9796 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9798 struct ppc_stub_hash_entry
*stub_entry
;
9799 struct bfd_link_info
*info
;
9800 struct ppc_link_hash_table
*htab
;
9804 /* Massage our args to the form they really have. */
9805 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9808 htab
= ppc_hash_table (info
);
9812 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9815 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9816 if (off
>= (bfd_vma
) -2)
9819 if (!htab
->elf
.dynamic_sections_created
9820 || stub_entry
->h
== NULL
9821 || stub_entry
->h
->elf
.dynindx
== -1)
9823 off
+= (plt
->output_offset
9824 + plt
->output_section
->vma
9825 - elf_gp (plt
->output_section
->owner
)
9826 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9828 size
= PLT_CALL_STUB_SIZE
;
9829 if (PPC_HA (off
) == 0)
9831 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9833 if (stub_entry
->h
!= NULL
9834 && (stub_entry
->h
== htab
->tls_get_addr_fd
9835 || stub_entry
->h
== htab
->tls_get_addr
)
9836 && !htab
->no_tls_get_addr_opt
)
9838 if (info
->emitrelocations
)
9840 stub_entry
->stub_sec
->reloc_count
9841 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9842 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9847 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9851 off
= (stub_entry
->target_value
9852 + stub_entry
->target_section
->output_offset
9853 + stub_entry
->target_section
->output_section
->vma
);
9854 off
-= (stub_entry
->stub_sec
->size
9855 + stub_entry
->stub_sec
->output_offset
9856 + stub_entry
->stub_sec
->output_section
->vma
);
9858 /* Reset the stub type from the plt variant in case we now
9859 can reach with a shorter stub. */
9860 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9861 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9864 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9866 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9867 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9869 if (PPC_HA (r2off
) != 0)
9874 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9875 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9877 struct ppc_branch_hash_entry
*br_entry
;
9879 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9880 stub_entry
->root
.string
+ 9,
9882 if (br_entry
== NULL
)
9884 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9885 stub_entry
->root
.string
);
9886 htab
->stub_error
= TRUE
;
9890 if (br_entry
->iter
!= htab
->stub_iteration
)
9892 br_entry
->iter
= htab
->stub_iteration
;
9893 br_entry
->offset
= htab
->brlt
->size
;
9894 htab
->brlt
->size
+= 8;
9896 if (htab
->relbrlt
!= NULL
)
9897 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9898 else if (info
->emitrelocations
)
9900 htab
->brlt
->reloc_count
+= 1;
9901 htab
->brlt
->flags
|= SEC_RELOC
;
9905 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9906 off
= (br_entry
->offset
9907 + htab
->brlt
->output_offset
9908 + htab
->brlt
->output_section
->vma
9909 - elf_gp (htab
->brlt
->output_section
->owner
)
9910 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9912 if (info
->emitrelocations
)
9914 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9915 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9918 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9921 if (PPC_HA (off
) != 0)
9927 if (PPC_HA (off
) != 0)
9930 if (PPC_HA (r2off
) != 0)
9934 else if (info
->emitrelocations
)
9936 stub_entry
->stub_sec
->reloc_count
+= 1;
9937 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9941 stub_entry
->stub_sec
->size
+= size
;
9945 /* Set up various things so that we can make a list of input sections
9946 for each output section included in the link. Returns -1 on error,
9947 0 when no stubs will be needed, and 1 on success. */
9950 ppc64_elf_setup_section_lists
9951 (struct bfd_link_info
*info
,
9952 asection
*(*add_stub_section
) (const char *, asection
*),
9953 void (*layout_sections_again
) (void))
9956 int top_id
, top_index
, id
;
9958 asection
**input_list
;
9960 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9964 /* Stash our params away. */
9965 htab
->add_stub_section
= add_stub_section
;
9966 htab
->layout_sections_again
= layout_sections_again
;
9968 if (htab
->brlt
== NULL
)
9971 /* Find the top input section id. */
9972 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9974 input_bfd
= input_bfd
->link_next
)
9976 for (section
= input_bfd
->sections
;
9978 section
= section
->next
)
9980 if (top_id
< section
->id
)
9981 top_id
= section
->id
;
9985 htab
->top_id
= top_id
;
9986 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9987 htab
->stub_group
= bfd_zmalloc (amt
);
9988 if (htab
->stub_group
== NULL
)
9991 /* Set toc_off for com, und, abs and ind sections. */
9992 for (id
= 0; id
< 3; id
++)
9993 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
9995 /* We can't use output_bfd->section_count here to find the top output
9996 section index as some sections may have been removed, and
9997 strip_excluded_output_sections doesn't renumber the indices. */
9998 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10000 section
= section
->next
)
10002 if (top_index
< section
->index
)
10003 top_index
= section
->index
;
10006 htab
->top_index
= top_index
;
10007 amt
= sizeof (asection
*) * (top_index
+ 1);
10008 input_list
= bfd_zmalloc (amt
);
10009 htab
->input_list
= input_list
;
10010 if (input_list
== NULL
)
10016 /* Set up for first pass at multitoc partitioning. */
10019 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10021 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10023 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10024 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10025 htab
->toc_bfd
= NULL
;
10026 htab
->toc_first_sec
= NULL
;
10029 /* The linker repeatedly calls this function for each TOC input section
10030 and linker generated GOT section. Group input bfds such that the toc
10031 within a group is less than 64k in size. */
10034 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10036 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10037 bfd_vma addr
, off
, limit
;
10042 if (!htab
->second_toc_pass
)
10044 /* Keep track of the first .toc or .got section for this input bfd. */
10045 if (htab
->toc_bfd
!= isec
->owner
)
10047 htab
->toc_bfd
= isec
->owner
;
10048 htab
->toc_first_sec
= isec
;
10051 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10052 off
= addr
- htab
->toc_curr
;
10053 limit
= 0x80008000;
10054 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10056 if (off
+ isec
->size
> limit
)
10058 addr
= (htab
->toc_first_sec
->output_offset
10059 + htab
->toc_first_sec
->output_section
->vma
);
10060 htab
->toc_curr
= addr
;
10063 /* toc_curr is the base address of this toc group. Set elf_gp
10064 for the input section to be the offset relative to the
10065 output toc base plus 0x8000. Making the input elf_gp an
10066 offset allows us to move the toc as a whole without
10067 recalculating input elf_gp. */
10068 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10069 off
+= TOC_BASE_OFF
;
10071 /* Die if someone uses a linker script that doesn't keep input
10072 file .toc and .got together. */
10073 if (elf_gp (isec
->owner
) != 0
10074 && elf_gp (isec
->owner
) != off
)
10077 elf_gp (isec
->owner
) = off
;
10081 /* During the second pass toc_first_sec points to the start of
10082 a toc group, and toc_curr is used to track the old elf_gp.
10083 We use toc_bfd to ensure we only look at each bfd once. */
10084 if (htab
->toc_bfd
== isec
->owner
)
10086 htab
->toc_bfd
= isec
->owner
;
10088 if (htab
->toc_first_sec
== NULL
10089 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10091 htab
->toc_curr
= elf_gp (isec
->owner
);
10092 htab
->toc_first_sec
= isec
;
10094 addr
= (htab
->toc_first_sec
->output_offset
10095 + htab
->toc_first_sec
->output_section
->vma
);
10096 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10097 elf_gp (isec
->owner
) = off
;
10102 /* Called via elf_link_hash_traverse to merge GOT entries for global
10106 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10108 if (h
->root
.type
== bfd_link_hash_indirect
)
10111 if (h
->root
.type
== bfd_link_hash_warning
)
10112 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10114 merge_got_entries (&h
->got
.glist
);
10119 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10123 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10125 struct got_entry
*gent
;
10127 if (h
->root
.type
== bfd_link_hash_indirect
)
10130 if (h
->root
.type
== bfd_link_hash_warning
)
10131 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10133 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10134 if (!gent
->is_indirect
)
10135 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10139 /* Called on the first multitoc pass after the last call to
10140 ppc64_elf_next_toc_section. This function removes duplicate GOT
10144 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10146 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10147 struct bfd
*ibfd
, *ibfd2
;
10148 bfd_boolean done_something
;
10150 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10152 if (!htab
->do_multi_toc
)
10155 /* Merge global sym got entries within a toc group. */
10156 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10158 /* And tlsld_got. */
10159 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10161 struct got_entry
*ent
, *ent2
;
10163 if (!is_ppc64_elf (ibfd
))
10166 ent
= ppc64_tlsld_got (ibfd
);
10167 if (!ent
->is_indirect
10168 && ent
->got
.offset
!= (bfd_vma
) -1)
10170 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10172 if (!is_ppc64_elf (ibfd2
))
10175 ent2
= ppc64_tlsld_got (ibfd2
);
10176 if (!ent2
->is_indirect
10177 && ent2
->got
.offset
!= (bfd_vma
) -1
10178 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10180 ent2
->is_indirect
= TRUE
;
10181 ent2
->got
.ent
= ent
;
10187 /* Zap sizes of got sections. */
10188 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10189 htab
->reliplt
->size
-= htab
->got_reli_size
;
10190 htab
->got_reli_size
= 0;
10192 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10194 asection
*got
, *relgot
;
10196 if (!is_ppc64_elf (ibfd
))
10199 got
= ppc64_elf_tdata (ibfd
)->got
;
10202 got
->rawsize
= got
->size
;
10204 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10205 relgot
->rawsize
= relgot
->size
;
10210 /* Now reallocate the got, local syms first. We don't need to
10211 allocate section contents again since we never increase size. */
10212 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10214 struct got_entry
**lgot_ents
;
10215 struct got_entry
**end_lgot_ents
;
10216 struct plt_entry
**local_plt
;
10217 struct plt_entry
**end_local_plt
;
10218 unsigned char *lgot_masks
;
10219 bfd_size_type locsymcount
;
10220 Elf_Internal_Shdr
*symtab_hdr
;
10221 asection
*s
, *srel
;
10223 if (!is_ppc64_elf (ibfd
))
10226 lgot_ents
= elf_local_got_ents (ibfd
);
10230 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10231 locsymcount
= symtab_hdr
->sh_info
;
10232 end_lgot_ents
= lgot_ents
+ locsymcount
;
10233 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10234 end_local_plt
= local_plt
+ locsymcount
;
10235 lgot_masks
= (unsigned char *) end_local_plt
;
10236 s
= ppc64_elf_tdata (ibfd
)->got
;
10237 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10238 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10240 struct got_entry
*ent
;
10242 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10244 unsigned int num
= 1;
10245 ent
->got
.offset
= s
->size
;
10246 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10248 s
->size
+= num
* 8;
10250 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10251 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10253 htab
->reliplt
->size
10254 += num
* sizeof (Elf64_External_Rela
);
10255 htab
->got_reli_size
10256 += num
* sizeof (Elf64_External_Rela
);
10262 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10264 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10266 struct got_entry
*ent
;
10268 if (!is_ppc64_elf (ibfd
))
10271 ent
= ppc64_tlsld_got (ibfd
);
10272 if (!ent
->is_indirect
10273 && ent
->got
.offset
!= (bfd_vma
) -1)
10275 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10276 ent
->got
.offset
= s
->size
;
10280 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10281 srel
->size
+= sizeof (Elf64_External_Rela
);
10286 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10287 if (!done_something
)
10288 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10292 if (!is_ppc64_elf (ibfd
))
10295 got
= ppc64_elf_tdata (ibfd
)->got
;
10298 done_something
= got
->rawsize
!= got
->size
;
10299 if (done_something
)
10304 if (done_something
)
10305 (*htab
->layout_sections_again
) ();
10307 /* Set up for second pass over toc sections to recalculate elf_gp
10308 on input sections. */
10309 htab
->toc_bfd
= NULL
;
10310 htab
->toc_first_sec
= NULL
;
10311 htab
->second_toc_pass
= TRUE
;
10312 return done_something
;
10315 /* Called after second pass of multitoc partitioning. */
10318 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10320 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10322 /* After the second pass, toc_curr tracks the TOC offset used
10323 for code sections below in ppc64_elf_next_input_section. */
10324 htab
->toc_curr
= TOC_BASE_OFF
;
10327 /* No toc references were found in ISEC. If the code in ISEC makes no
10328 calls, then there's no need to use toc adjusting stubs when branching
10329 into ISEC. Actually, indirect calls from ISEC are OK as they will
10330 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10331 needed, and 2 if a cyclical call-graph was found but no other reason
10332 for a stub was detected. If called from the top level, a return of
10333 2 means the same as a return of 0. */
10336 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10340 /* Mark this section as checked. */
10341 isec
->call_check_done
= 1;
10343 /* We know none of our code bearing sections will need toc stubs. */
10344 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10347 if (isec
->size
== 0)
10350 if (isec
->output_section
== NULL
)
10354 if (isec
->reloc_count
!= 0)
10356 Elf_Internal_Rela
*relstart
, *rel
;
10357 Elf_Internal_Sym
*local_syms
;
10358 struct ppc_link_hash_table
*htab
;
10360 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10361 info
->keep_memory
);
10362 if (relstart
== NULL
)
10365 /* Look for branches to outside of this section. */
10367 htab
= ppc_hash_table (info
);
10371 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10373 enum elf_ppc64_reloc_type r_type
;
10374 unsigned long r_symndx
;
10375 struct elf_link_hash_entry
*h
;
10376 struct ppc_link_hash_entry
*eh
;
10377 Elf_Internal_Sym
*sym
;
10379 struct _opd_sec_data
*opd
;
10383 r_type
= ELF64_R_TYPE (rel
->r_info
);
10384 if (r_type
!= R_PPC64_REL24
10385 && r_type
!= R_PPC64_REL14
10386 && r_type
!= R_PPC64_REL14_BRTAKEN
10387 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10390 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10391 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10398 /* Calls to dynamic lib functions go through a plt call stub
10400 eh
= (struct ppc_link_hash_entry
*) h
;
10402 && (eh
->elf
.plt
.plist
!= NULL
10404 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10410 if (sym_sec
== NULL
)
10411 /* Ignore other undefined symbols. */
10414 /* Assume branches to other sections not included in the
10415 link need stubs too, to cover -R and absolute syms. */
10416 if (sym_sec
->output_section
== NULL
)
10423 sym_value
= sym
->st_value
;
10426 if (h
->root
.type
!= bfd_link_hash_defined
10427 && h
->root
.type
!= bfd_link_hash_defweak
)
10429 sym_value
= h
->root
.u
.def
.value
;
10431 sym_value
+= rel
->r_addend
;
10433 /* If this branch reloc uses an opd sym, find the code section. */
10434 opd
= get_opd_info (sym_sec
);
10437 if (h
== NULL
&& opd
->adjust
!= NULL
)
10441 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10443 /* Assume deleted functions won't ever be called. */
10445 sym_value
+= adjust
;
10448 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10449 if (dest
== (bfd_vma
) -1)
10454 + sym_sec
->output_offset
10455 + sym_sec
->output_section
->vma
);
10457 /* Ignore branch to self. */
10458 if (sym_sec
== isec
)
10461 /* If the called function uses the toc, we need a stub. */
10462 if (sym_sec
->has_toc_reloc
10463 || sym_sec
->makes_toc_func_call
)
10469 /* Assume any branch that needs a long branch stub might in fact
10470 need a plt_branch stub. A plt_branch stub uses r2. */
10471 else if (dest
- (isec
->output_offset
10472 + isec
->output_section
->vma
10473 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10479 /* If calling back to a section in the process of being
10480 tested, we can't say for sure that no toc adjusting stubs
10481 are needed, so don't return zero. */
10482 else if (sym_sec
->call_check_in_progress
)
10485 /* Branches to another section that itself doesn't have any TOC
10486 references are OK. Recursively call ourselves to check. */
10487 else if (!sym_sec
->call_check_done
)
10491 /* Mark current section as indeterminate, so that other
10492 sections that call back to current won't be marked as
10494 isec
->call_check_in_progress
= 1;
10495 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10496 isec
->call_check_in_progress
= 0;
10507 if (local_syms
!= NULL
10508 && (elf_symtab_hdr (isec
->owner
).contents
10509 != (unsigned char *) local_syms
))
10511 if (elf_section_data (isec
)->relocs
!= relstart
)
10516 && isec
->map_head
.s
!= NULL
10517 && (strcmp (isec
->output_section
->name
, ".init") == 0
10518 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10520 if (isec
->map_head
.s
->has_toc_reloc
10521 || isec
->map_head
.s
->makes_toc_func_call
)
10523 else if (!isec
->map_head
.s
->call_check_done
)
10526 isec
->call_check_in_progress
= 1;
10527 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10528 isec
->call_check_in_progress
= 0;
10535 isec
->makes_toc_func_call
= 1;
10540 /* The linker repeatedly calls this function for each input section,
10541 in the order that input sections are linked into output sections.
10542 Build lists of input sections to determine groupings between which
10543 we may insert linker stubs. */
10546 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10548 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10553 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10554 && isec
->output_section
->index
<= htab
->top_index
)
10556 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10557 /* Steal the link_sec pointer for our list. */
10558 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10559 /* This happens to make the list in reverse order,
10560 which is what we want. */
10561 PREV_SEC (isec
) = *list
;
10565 if (htab
->multi_toc_needed
)
10567 /* If a code section has a function that uses the TOC then we need
10568 to use the right TOC (obviously). Also, make sure that .opd gets
10569 the correct TOC value for R_PPC64_TOC relocs that don't have or
10570 can't find their function symbol (shouldn't ever happen now).
10571 Also specially treat .fixup for the linux kernel. .fixup
10572 contains branches, but only back to the function that hit an
10574 if (isec
->has_toc_reloc
10575 || (isec
->flags
& SEC_CODE
) == 0
10576 || strcmp (isec
->name
, ".fixup") == 0)
10578 if (elf_gp (isec
->owner
) != 0)
10579 htab
->toc_curr
= elf_gp (isec
->owner
);
10581 else if (!isec
->call_check_done
10582 && toc_adjusting_stub_needed (info
, isec
) < 0)
10586 /* Functions that don't use the TOC can belong in any TOC group.
10587 Use the last TOC base. This happens to make _init and _fini
10588 pasting work, because the fragments generally don't use the TOC. */
10589 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10593 /* Check that all .init and .fini sections use the same toc, if they
10594 have toc relocs. */
10597 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10599 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10603 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10604 bfd_vma toc_off
= 0;
10607 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10608 if (i
->has_toc_reloc
)
10611 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10612 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10615 /* Make sure the whole pasted function uses the same toc offset. */
10617 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10618 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10624 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10626 return (check_pasted_section (info
, ".init")
10627 & check_pasted_section (info
, ".fini"));
10630 /* See whether we can group stub sections together. Grouping stub
10631 sections may result in fewer stubs. More importantly, we need to
10632 put all .init* and .fini* stubs at the beginning of the .init or
10633 .fini output sections respectively, because glibc splits the
10634 _init and _fini functions into multiple parts. Putting a stub in
10635 the middle of a function is not a good idea. */
10638 group_sections (struct ppc_link_hash_table
*htab
,
10639 bfd_size_type stub_group_size
,
10640 bfd_boolean stubs_always_before_branch
)
10643 bfd_size_type stub14_group_size
;
10644 bfd_boolean suppress_size_errors
;
10646 suppress_size_errors
= FALSE
;
10647 stub14_group_size
= stub_group_size
;
10648 if (stub_group_size
== 1)
10650 /* Default values. */
10651 if (stubs_always_before_branch
)
10653 stub_group_size
= 0x1e00000;
10654 stub14_group_size
= 0x7800;
10658 stub_group_size
= 0x1c00000;
10659 stub14_group_size
= 0x7000;
10661 suppress_size_errors
= TRUE
;
10664 list
= htab
->input_list
+ htab
->top_index
;
10667 asection
*tail
= *list
;
10668 while (tail
!= NULL
)
10672 bfd_size_type total
;
10673 bfd_boolean big_sec
;
10677 total
= tail
->size
;
10678 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
10679 ? stub14_group_size
: stub_group_size
);
10680 if (big_sec
&& !suppress_size_errors
)
10681 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10682 tail
->owner
, tail
);
10683 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10685 while ((prev
= PREV_SEC (curr
)) != NULL
10686 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10687 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10688 ? stub14_group_size
: stub_group_size
))
10689 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10692 /* OK, the size from the start of CURR to the end is less
10693 than stub_group_size and thus can be handled by one stub
10694 section. (or the tail section is itself larger than
10695 stub_group_size, in which case we may be toast.) We
10696 should really be keeping track of the total size of stubs
10697 added here, as stubs contribute to the final output
10698 section size. That's a little tricky, and this way will
10699 only break if stubs added make the total size more than
10700 2^25, ie. for the default stub_group_size, if stubs total
10701 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10704 prev
= PREV_SEC (tail
);
10705 /* Set up this stub group. */
10706 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10708 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10710 /* But wait, there's more! Input sections up to stub_group_size
10711 bytes before the stub section can be handled by it too.
10712 Don't do this if we have a really large section after the
10713 stubs, as adding more stubs increases the chance that
10714 branches may not reach into the stub section. */
10715 if (!stubs_always_before_branch
&& !big_sec
)
10718 while (prev
!= NULL
10719 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10720 < (ppc64_elf_section_data (prev
)->has_14bit_branch
10721 ? stub14_group_size
: stub_group_size
))
10722 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10725 prev
= PREV_SEC (tail
);
10726 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10732 while (list
-- != htab
->input_list
);
10733 free (htab
->input_list
);
10737 /* Determine and set the size of the stub section for a final link.
10739 The basic idea here is to examine all the relocations looking for
10740 PC-relative calls to a target that is unreachable with a "bl"
10744 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10746 bfd_size_type stub_group_size
;
10747 bfd_boolean stubs_always_before_branch
;
10748 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10753 stubs_always_before_branch
= group_size
< 0;
10754 if (group_size
< 0)
10755 stub_group_size
= -group_size
;
10757 stub_group_size
= group_size
;
10759 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10764 unsigned int bfd_indx
;
10765 asection
*stub_sec
;
10767 htab
->stub_iteration
+= 1;
10769 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10771 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10773 Elf_Internal_Shdr
*symtab_hdr
;
10775 Elf_Internal_Sym
*local_syms
= NULL
;
10777 if (!is_ppc64_elf (input_bfd
))
10780 /* We'll need the symbol table in a second. */
10781 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10782 if (symtab_hdr
->sh_info
== 0)
10785 /* Walk over each section attached to the input bfd. */
10786 for (section
= input_bfd
->sections
;
10788 section
= section
->next
)
10790 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10792 /* If there aren't any relocs, then there's nothing more
10794 if ((section
->flags
& SEC_RELOC
) == 0
10795 || (section
->flags
& SEC_ALLOC
) == 0
10796 || (section
->flags
& SEC_LOAD
) == 0
10797 || (section
->flags
& SEC_CODE
) == 0
10798 || section
->reloc_count
== 0)
10801 /* If this section is a link-once section that will be
10802 discarded, then don't create any stubs. */
10803 if (section
->output_section
== NULL
10804 || section
->output_section
->owner
!= info
->output_bfd
)
10807 /* Get the relocs. */
10809 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10810 info
->keep_memory
);
10811 if (internal_relocs
== NULL
)
10812 goto error_ret_free_local
;
10814 /* Now examine each relocation. */
10815 irela
= internal_relocs
;
10816 irelaend
= irela
+ section
->reloc_count
;
10817 for (; irela
< irelaend
; irela
++)
10819 enum elf_ppc64_reloc_type r_type
;
10820 unsigned int r_indx
;
10821 enum ppc_stub_type stub_type
;
10822 struct ppc_stub_hash_entry
*stub_entry
;
10823 asection
*sym_sec
, *code_sec
;
10824 bfd_vma sym_value
, code_value
;
10825 bfd_vma destination
;
10826 bfd_boolean ok_dest
;
10827 struct ppc_link_hash_entry
*hash
;
10828 struct ppc_link_hash_entry
*fdh
;
10829 struct elf_link_hash_entry
*h
;
10830 Elf_Internal_Sym
*sym
;
10832 const asection
*id_sec
;
10833 struct _opd_sec_data
*opd
;
10834 struct plt_entry
*plt_ent
;
10836 r_type
= ELF64_R_TYPE (irela
->r_info
);
10837 r_indx
= ELF64_R_SYM (irela
->r_info
);
10839 if (r_type
>= R_PPC64_max
)
10841 bfd_set_error (bfd_error_bad_value
);
10842 goto error_ret_free_internal
;
10845 /* Only look for stubs on branch instructions. */
10846 if (r_type
!= R_PPC64_REL24
10847 && r_type
!= R_PPC64_REL14
10848 && r_type
!= R_PPC64_REL14_BRTAKEN
10849 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10852 /* Now determine the call target, its name, value,
10854 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10855 r_indx
, input_bfd
))
10856 goto error_ret_free_internal
;
10857 hash
= (struct ppc_link_hash_entry
*) h
;
10864 sym_value
= sym
->st_value
;
10867 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10868 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10870 sym_value
= hash
->elf
.root
.u
.def
.value
;
10871 if (sym_sec
->output_section
!= NULL
)
10874 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10875 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10877 /* Recognise an old ABI func code entry sym, and
10878 use the func descriptor sym instead if it is
10880 if (hash
->elf
.root
.root
.string
[0] == '.'
10881 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10883 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10884 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10886 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10887 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10888 if (sym_sec
->output_section
!= NULL
)
10897 bfd_set_error (bfd_error_bad_value
);
10898 goto error_ret_free_internal
;
10904 sym_value
+= irela
->r_addend
;
10905 destination
= (sym_value
10906 + sym_sec
->output_offset
10907 + sym_sec
->output_section
->vma
);
10910 code_sec
= sym_sec
;
10911 code_value
= sym_value
;
10912 opd
= get_opd_info (sym_sec
);
10917 if (hash
== NULL
&& opd
->adjust
!= NULL
)
10919 long adjust
= opd
->adjust
[sym_value
/ 8];
10922 code_value
+= adjust
;
10923 sym_value
+= adjust
;
10925 dest
= opd_entry_value (sym_sec
, sym_value
,
10926 &code_sec
, &code_value
);
10927 if (dest
!= (bfd_vma
) -1)
10929 destination
= dest
;
10932 /* Fixup old ABI sym to point at code
10934 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
10935 hash
->elf
.root
.u
.def
.section
= code_sec
;
10936 hash
->elf
.root
.u
.def
.value
= code_value
;
10941 /* Determine what (if any) linker stub is needed. */
10943 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
10944 &plt_ent
, destination
);
10946 if (stub_type
!= ppc_stub_plt_call
)
10948 /* Check whether we need a TOC adjusting stub.
10949 Since the linker pastes together pieces from
10950 different object files when creating the
10951 _init and _fini functions, it may be that a
10952 call to what looks like a local sym is in
10953 fact a call needing a TOC adjustment. */
10954 if (code_sec
!= NULL
10955 && code_sec
->output_section
!= NULL
10956 && (htab
->stub_group
[code_sec
->id
].toc_off
10957 != htab
->stub_group
[section
->id
].toc_off
)
10958 && (code_sec
->has_toc_reloc
10959 || code_sec
->makes_toc_func_call
))
10960 stub_type
= ppc_stub_long_branch_r2off
;
10963 if (stub_type
== ppc_stub_none
)
10966 /* __tls_get_addr calls might be eliminated. */
10967 if (stub_type
!= ppc_stub_plt_call
10969 && (hash
== htab
->tls_get_addr
10970 || hash
== htab
->tls_get_addr_fd
)
10971 && section
->has_tls_reloc
10972 && irela
!= internal_relocs
)
10974 /* Get tls info. */
10975 unsigned char *tls_mask
;
10977 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
10978 irela
- 1, input_bfd
))
10979 goto error_ret_free_internal
;
10980 if (*tls_mask
!= 0)
10984 /* Support for grouping stub sections. */
10985 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
10987 /* Get the name of this stub. */
10988 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
10990 goto error_ret_free_internal
;
10992 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
10993 stub_name
, FALSE
, FALSE
);
10994 if (stub_entry
!= NULL
)
10996 /* The proper stub has already been created. */
11001 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
11002 if (stub_entry
== NULL
)
11005 error_ret_free_internal
:
11006 if (elf_section_data (section
)->relocs
== NULL
)
11007 free (internal_relocs
);
11008 error_ret_free_local
:
11009 if (local_syms
!= NULL
11010 && (symtab_hdr
->contents
11011 != (unsigned char *) local_syms
))
11016 stub_entry
->stub_type
= stub_type
;
11017 if (stub_type
!= ppc_stub_plt_call
)
11019 stub_entry
->target_value
= code_value
;
11020 stub_entry
->target_section
= code_sec
;
11024 stub_entry
->target_value
= sym_value
;
11025 stub_entry
->target_section
= sym_sec
;
11027 stub_entry
->h
= hash
;
11028 stub_entry
->plt_ent
= plt_ent
;
11029 stub_entry
->addend
= irela
->r_addend
;
11031 if (stub_entry
->h
!= NULL
)
11032 htab
->stub_globals
+= 1;
11035 /* We're done with the internal relocs, free them. */
11036 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11037 free (internal_relocs
);
11040 if (local_syms
!= NULL
11041 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11043 if (!info
->keep_memory
)
11046 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11050 /* We may have added some stubs. Find out the new size of the
11052 for (stub_sec
= htab
->stub_bfd
->sections
;
11054 stub_sec
= stub_sec
->next
)
11055 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11057 stub_sec
->rawsize
= stub_sec
->size
;
11058 stub_sec
->size
= 0;
11059 stub_sec
->reloc_count
= 0;
11060 stub_sec
->flags
&= ~SEC_RELOC
;
11063 htab
->brlt
->size
= 0;
11064 htab
->brlt
->reloc_count
= 0;
11065 htab
->brlt
->flags
&= ~SEC_RELOC
;
11066 if (htab
->relbrlt
!= NULL
)
11067 htab
->relbrlt
->size
= 0;
11069 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11071 if (info
->emitrelocations
11072 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11074 htab
->glink
->reloc_count
= 1;
11075 htab
->glink
->flags
|= SEC_RELOC
;
11078 for (stub_sec
= htab
->stub_bfd
->sections
;
11080 stub_sec
= stub_sec
->next
)
11081 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11082 && stub_sec
->rawsize
!= stub_sec
->size
)
11085 /* Exit from this loop when no stubs have been added, and no stubs
11086 have changed size. */
11087 if (stub_sec
== NULL
)
11090 /* Ask the linker to do its stuff. */
11091 (*htab
->layout_sections_again
) ();
11094 /* It would be nice to strip htab->brlt from the output if the
11095 section is empty, but it's too late. If we strip sections here,
11096 the dynamic symbol table is corrupted since the section symbol
11097 for the stripped section isn't written. */
11102 /* Called after we have determined section placement. If sections
11103 move, we'll be called again. Provide a value for TOCstart. */
11106 ppc64_elf_toc (bfd
*obfd
)
11111 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11112 order. The TOC starts where the first of these sections starts. */
11113 s
= bfd_get_section_by_name (obfd
, ".got");
11114 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11115 s
= bfd_get_section_by_name (obfd
, ".toc");
11116 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11117 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11118 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11119 s
= bfd_get_section_by_name (obfd
, ".plt");
11120 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11122 /* This may happen for
11123 o references to TOC base (SYM@toc / TOC[tc0]) without a
11125 o bad linker script
11126 o --gc-sections and empty TOC sections
11128 FIXME: Warn user? */
11130 /* Look for a likely section. We probably won't even be
11132 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11133 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11135 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11138 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11139 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11140 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11143 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11144 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11148 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11149 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11155 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11160 /* Build all the stubs associated with the current output file.
11161 The stubs are kept in a hash table attached to the main linker
11162 hash table. This function is called via gldelf64ppc_finish. */
11165 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11166 struct bfd_link_info
*info
,
11169 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11170 asection
*stub_sec
;
11172 int stub_sec_count
= 0;
11177 htab
->emit_stub_syms
= emit_stub_syms
;
11179 /* Allocate memory to hold the linker stubs. */
11180 for (stub_sec
= htab
->stub_bfd
->sections
;
11182 stub_sec
= stub_sec
->next
)
11183 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11184 && stub_sec
->size
!= 0)
11186 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11187 if (stub_sec
->contents
== NULL
)
11189 /* We want to check that built size is the same as calculated
11190 size. rawsize is a convenient location to use. */
11191 stub_sec
->rawsize
= stub_sec
->size
;
11192 stub_sec
->size
= 0;
11195 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11200 /* Build the .glink plt call stub. */
11201 if (htab
->emit_stub_syms
)
11203 struct elf_link_hash_entry
*h
;
11204 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11205 TRUE
, FALSE
, FALSE
);
11208 if (h
->root
.type
== bfd_link_hash_new
)
11210 h
->root
.type
= bfd_link_hash_defined
;
11211 h
->root
.u
.def
.section
= htab
->glink
;
11212 h
->root
.u
.def
.value
= 8;
11213 h
->ref_regular
= 1;
11214 h
->def_regular
= 1;
11215 h
->ref_regular_nonweak
= 1;
11216 h
->forced_local
= 1;
11220 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11221 if (info
->emitrelocations
)
11223 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11226 r
->r_offset
= (htab
->glink
->output_offset
11227 + htab
->glink
->output_section
->vma
);
11228 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11229 r
->r_addend
= plt0
;
11231 p
= htab
->glink
->contents
;
11232 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11233 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11235 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11237 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11239 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11241 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11243 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11245 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11247 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11249 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11251 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11253 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11255 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11257 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11259 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11263 /* Build the .glink lazy link call stubs. */
11265 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11269 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11274 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11276 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11279 bfd_put_32 (htab
->glink
->owner
,
11280 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11284 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11287 if (htab
->brlt
->size
!= 0)
11289 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11291 if (htab
->brlt
->contents
== NULL
)
11294 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11296 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11297 htab
->relbrlt
->size
);
11298 if (htab
->relbrlt
->contents
== NULL
)
11302 /* Build the stubs as directed by the stub hash table. */
11303 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11305 if (htab
->relbrlt
!= NULL
)
11306 htab
->relbrlt
->reloc_count
= 0;
11308 for (stub_sec
= htab
->stub_bfd
->sections
;
11310 stub_sec
= stub_sec
->next
)
11311 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11313 stub_sec_count
+= 1;
11314 if (stub_sec
->rawsize
!= stub_sec
->size
)
11318 if (stub_sec
!= NULL
11319 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11321 htab
->stub_error
= TRUE
;
11322 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11325 if (htab
->stub_error
)
11330 *stats
= bfd_malloc (500);
11331 if (*stats
== NULL
)
11334 sprintf (*stats
, _("linker stubs in %u group%s\n"
11336 " toc adjust %lu\n"
11337 " long branch %lu\n"
11338 " long toc adj %lu\n"
11341 stub_sec_count
== 1 ? "" : "s",
11342 htab
->stub_count
[ppc_stub_long_branch
- 1],
11343 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11344 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11345 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11346 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11351 /* This function undoes the changes made by add_symbol_adjust. */
11354 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11356 struct ppc_link_hash_entry
*eh
;
11358 if (h
->root
.type
== bfd_link_hash_indirect
)
11361 if (h
->root
.type
== bfd_link_hash_warning
)
11362 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11364 eh
= (struct ppc_link_hash_entry
*) h
;
11365 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11368 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11373 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11375 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11378 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11381 /* What to do when ld finds relocations against symbols defined in
11382 discarded sections. */
11384 static unsigned int
11385 ppc64_elf_action_discarded (asection
*sec
)
11387 if (strcmp (".opd", sec
->name
) == 0)
11390 if (strcmp (".toc", sec
->name
) == 0)
11393 if (strcmp (".toc1", sec
->name
) == 0)
11396 return _bfd_elf_default_action_discarded (sec
);
11399 /* REL points to a low-part reloc on a largetoc instruction sequence.
11400 Find the matching high-part reloc instruction and verify that it
11401 is addis REG,r2,x. If so, return a pointer to the high-part reloc. */
11403 static const Elf_Internal_Rela
*
11404 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11405 const Elf_Internal_Rela
*rel
,
11407 const bfd
*input_bfd
,
11408 const bfd_byte
*contents
)
11410 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11411 bfd_vma r_info_ha
, r_addend
;
11413 r_type
= ELF64_R_TYPE (rel
->r_info
);
11416 case R_PPC64_GOT_TLSLD16_LO
:
11417 case R_PPC64_GOT_TLSGD16_LO
:
11418 case R_PPC64_GOT_TPREL16_LO_DS
:
11419 case R_PPC64_GOT_DTPREL16_LO_DS
:
11420 case R_PPC64_GOT16_LO
:
11421 case R_PPC64_TOC16_LO
:
11422 r_type_ha
= r_type
+ 2;
11424 case R_PPC64_GOT16_LO_DS
:
11425 r_type_ha
= R_PPC64_GOT16_HA
;
11427 case R_PPC64_TOC16_LO_DS
:
11428 r_type_ha
= R_PPC64_TOC16_HA
;
11433 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11434 r_addend
= rel
->r_addend
;
11436 while (--rel
>= relocs
)
11437 if (rel
->r_info
== r_info_ha
11438 && rel
->r_addend
== r_addend
)
11440 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11441 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11442 if ((insn
& ((0x3f << 26) | (0x1f << 16)))
11443 == ((15u << 26) | (2 << 16)) /* addis rt,r2,x */
11444 && (insn
& (0x1f << 21)) == (reg
<< 21))
11451 /* The RELOCATE_SECTION function is called by the ELF backend linker
11452 to handle the relocations for a section.
11454 The relocs are always passed as Rela structures; if the section
11455 actually uses Rel structures, the r_addend field will always be
11458 This function is responsible for adjust the section contents as
11459 necessary, and (if using Rela relocs and generating a
11460 relocatable output file) adjusting the reloc addend as
11463 This function does not have to worry about setting the reloc
11464 address or the reloc symbol index.
11466 LOCAL_SYMS is a pointer to the swapped in local symbols.
11468 LOCAL_SECTIONS is an array giving the section in the input file
11469 corresponding to the st_shndx field of each local symbol.
11471 The global hash table entry for the global symbols can be found
11472 via elf_sym_hashes (input_bfd).
11474 When generating relocatable output, this function must handle
11475 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11476 going to be the section symbol corresponding to the output
11477 section, which means that the addend must be adjusted
11481 ppc64_elf_relocate_section (bfd
*output_bfd
,
11482 struct bfd_link_info
*info
,
11484 asection
*input_section
,
11485 bfd_byte
*contents
,
11486 Elf_Internal_Rela
*relocs
,
11487 Elf_Internal_Sym
*local_syms
,
11488 asection
**local_sections
)
11490 struct ppc_link_hash_table
*htab
;
11491 Elf_Internal_Shdr
*symtab_hdr
;
11492 struct elf_link_hash_entry
**sym_hashes
;
11493 Elf_Internal_Rela
*rel
;
11494 Elf_Internal_Rela
*relend
;
11495 Elf_Internal_Rela outrel
;
11497 struct got_entry
**local_got_ents
;
11499 bfd_boolean ret
= TRUE
;
11500 bfd_boolean is_opd
;
11501 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11502 bfd_boolean is_power4
= FALSE
;
11503 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11505 /* Initialize howto table if needed. */
11506 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11509 htab
= ppc_hash_table (info
);
11513 /* Don't relocate stub sections. */
11514 if (input_section
->owner
== htab
->stub_bfd
)
11517 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11519 local_got_ents
= elf_local_got_ents (input_bfd
);
11520 TOCstart
= elf_gp (output_bfd
);
11521 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11522 sym_hashes
= elf_sym_hashes (input_bfd
);
11523 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11526 relend
= relocs
+ input_section
->reloc_count
;
11527 for (; rel
< relend
; rel
++)
11529 enum elf_ppc64_reloc_type r_type
;
11530 bfd_vma addend
, orig_addend
;
11531 bfd_reloc_status_type r
;
11532 Elf_Internal_Sym
*sym
;
11534 struct elf_link_hash_entry
*h_elf
;
11535 struct ppc_link_hash_entry
*h
;
11536 struct ppc_link_hash_entry
*fdh
;
11537 const char *sym_name
;
11538 unsigned long r_symndx
, toc_symndx
;
11539 bfd_vma toc_addend
;
11540 unsigned char tls_mask
, tls_gd
, tls_type
;
11541 unsigned char sym_type
;
11542 bfd_vma relocation
;
11543 bfd_boolean unresolved_reloc
;
11544 bfd_boolean warned
;
11547 struct ppc_stub_hash_entry
*stub_entry
;
11548 bfd_vma max_br_offset
;
11551 r_type
= ELF64_R_TYPE (rel
->r_info
);
11552 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11554 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11555 symbol of the previous ADDR64 reloc. The symbol gives us the
11556 proper TOC base to use. */
11557 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11559 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11561 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11567 unresolved_reloc
= FALSE
;
11569 orig_addend
= rel
->r_addend
;
11571 if (r_symndx
< symtab_hdr
->sh_info
)
11573 /* It's a local symbol. */
11574 struct _opd_sec_data
*opd
;
11576 sym
= local_syms
+ r_symndx
;
11577 sec
= local_sections
[r_symndx
];
11578 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11579 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11580 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11581 opd
= get_opd_info (sec
);
11582 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11584 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11589 /* If this is a relocation against the opd section sym
11590 and we have edited .opd, adjust the reloc addend so
11591 that ld -r and ld --emit-relocs output is correct.
11592 If it is a reloc against some other .opd symbol,
11593 then the symbol value will be adjusted later. */
11594 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11595 rel
->r_addend
+= adjust
;
11597 relocation
+= adjust
;
11603 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11604 r_symndx
, symtab_hdr
, sym_hashes
,
11605 h_elf
, sec
, relocation
,
11606 unresolved_reloc
, warned
);
11607 sym_name
= h_elf
->root
.root
.string
;
11608 sym_type
= h_elf
->type
;
11610 h
= (struct ppc_link_hash_entry
*) h_elf
;
11612 if (sec
!= NULL
&& elf_discarded_section (sec
))
11614 /* For relocs against symbols from removed linkonce sections,
11615 or sections discarded by a linker script, we just want the
11616 section contents zeroed. Avoid any special processing. */
11617 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
11618 contents
+ rel
->r_offset
);
11624 if (info
->relocatable
)
11627 /* TLS optimizations. Replace instruction sequences and relocs
11628 based on information we collected in tls_optimize. We edit
11629 RELOCS so that --emit-relocs will output something sensible
11630 for the final instruction stream. */
11635 tls_mask
= h
->tls_mask
;
11636 else if (local_got_ents
!= NULL
)
11638 struct plt_entry
**local_plt
= (struct plt_entry
**)
11639 (local_got_ents
+ symtab_hdr
->sh_info
);
11640 unsigned char *lgot_masks
= (unsigned char *)
11641 (local_plt
+ symtab_hdr
->sh_info
);
11642 tls_mask
= lgot_masks
[r_symndx
];
11645 && (r_type
== R_PPC64_TLS
11646 || r_type
== R_PPC64_TLSGD
11647 || r_type
== R_PPC64_TLSLD
))
11649 /* Check for toc tls entries. */
11650 unsigned char *toc_tls
;
11652 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11653 &local_syms
, rel
, input_bfd
))
11657 tls_mask
= *toc_tls
;
11660 /* Check that tls relocs are used with tls syms, and non-tls
11661 relocs are used with non-tls syms. */
11663 && r_type
!= R_PPC64_NONE
11665 || h
->elf
.root
.type
== bfd_link_hash_defined
11666 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11667 && (IS_PPC64_TLS_RELOC (r_type
)
11668 != (sym_type
== STT_TLS
11669 || (sym_type
== STT_SECTION
11670 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11673 && (r_type
== R_PPC64_TLS
11674 || r_type
== R_PPC64_TLSGD
11675 || r_type
== R_PPC64_TLSLD
))
11676 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11679 (*_bfd_error_handler
)
11680 (!IS_PPC64_TLS_RELOC (r_type
)
11681 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11682 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11685 (long) rel
->r_offset
,
11686 ppc64_elf_howto_table
[r_type
]->name
,
11690 /* Ensure reloc mapping code below stays sane. */
11691 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11692 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11693 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11694 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11695 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11696 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11697 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11698 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11699 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11700 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11708 case R_PPC64_LO_DS_OPT
:
11709 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11710 if ((insn
& (0x3f << 26)) != 58u << 26)
11712 insn
+= (14u << 26) - (58u << 26);
11713 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11714 r_type
= R_PPC64_TOC16_LO
;
11715 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11718 case R_PPC64_TOC16
:
11719 case R_PPC64_TOC16_LO
:
11720 case R_PPC64_TOC16_DS
:
11721 case R_PPC64_TOC16_LO_DS
:
11723 /* Check for toc tls entries. */
11724 unsigned char *toc_tls
;
11727 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11728 &local_syms
, rel
, input_bfd
);
11734 tls_mask
= *toc_tls
;
11735 if (r_type
== R_PPC64_TOC16_DS
11736 || r_type
== R_PPC64_TOC16_LO_DS
)
11739 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11744 /* If we found a GD reloc pair, then we might be
11745 doing a GD->IE transition. */
11748 tls_gd
= TLS_TPRELGD
;
11749 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11752 else if (retval
== 3)
11754 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11762 case R_PPC64_GOT_TPREL16_HI
:
11763 case R_PPC64_GOT_TPREL16_HA
:
11765 && (tls_mask
& TLS_TPREL
) == 0)
11767 rel
->r_offset
-= d_offset
;
11768 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11769 r_type
= R_PPC64_NONE
;
11770 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11774 case R_PPC64_GOT_TPREL16_DS
:
11775 case R_PPC64_GOT_TPREL16_LO_DS
:
11777 && (tls_mask
& TLS_TPREL
) == 0)
11780 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11782 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11783 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11784 r_type
= R_PPC64_TPREL16_HA
;
11785 if (toc_symndx
!= 0)
11787 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11788 rel
->r_addend
= toc_addend
;
11789 /* We changed the symbol. Start over in order to
11790 get h, sym, sec etc. right. */
11795 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11801 && (tls_mask
& TLS_TPREL
) == 0)
11803 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11804 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11807 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11808 /* Was PPC64_TLS which sits on insn boundary, now
11809 PPC64_TPREL16_LO which is at low-order half-word. */
11810 rel
->r_offset
+= d_offset
;
11811 r_type
= R_PPC64_TPREL16_LO
;
11812 if (toc_symndx
!= 0)
11814 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11815 rel
->r_addend
= toc_addend
;
11816 /* We changed the symbol. Start over in order to
11817 get h, sym, sec etc. right. */
11822 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11826 case R_PPC64_GOT_TLSGD16_HI
:
11827 case R_PPC64_GOT_TLSGD16_HA
:
11828 tls_gd
= TLS_TPRELGD
;
11829 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11833 case R_PPC64_GOT_TLSLD16_HI
:
11834 case R_PPC64_GOT_TLSLD16_HA
:
11835 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11838 if ((tls_mask
& tls_gd
) != 0)
11839 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11840 + R_PPC64_GOT_TPREL16_DS
);
11843 rel
->r_offset
-= d_offset
;
11844 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11845 r_type
= R_PPC64_NONE
;
11847 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11851 case R_PPC64_GOT_TLSGD16
:
11852 case R_PPC64_GOT_TLSGD16_LO
:
11853 tls_gd
= TLS_TPRELGD
;
11854 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11858 case R_PPC64_GOT_TLSLD16
:
11859 case R_PPC64_GOT_TLSLD16_LO
:
11860 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11862 unsigned int insn1
, insn2
, insn3
;
11866 offset
= (bfd_vma
) -1;
11867 /* If not using the newer R_PPC64_TLSGD/LD to mark
11868 __tls_get_addr calls, we must trust that the call
11869 stays with its arg setup insns, ie. that the next
11870 reloc is the __tls_get_addr call associated with
11871 the current reloc. Edit both insns. */
11872 if (input_section
->has_tls_get_addr_call
11873 && rel
+ 1 < relend
11874 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
11875 htab
->tls_get_addr
,
11876 htab
->tls_get_addr_fd
))
11877 offset
= rel
[1].r_offset
;
11878 if ((tls_mask
& tls_gd
) != 0)
11881 insn1
= bfd_get_32 (output_bfd
,
11882 contents
+ rel
->r_offset
- d_offset
);
11883 insn1
&= (1 << 26) - (1 << 2);
11884 insn1
|= 58 << 26; /* ld */
11885 insn2
= 0x7c636a14; /* add 3,3,13 */
11886 if (offset
!= (bfd_vma
) -1)
11887 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11888 if ((tls_mask
& TLS_EXPLICIT
) == 0)
11889 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11890 + R_PPC64_GOT_TPREL16_DS
);
11892 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11893 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11898 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11899 insn2
= 0x38630000; /* addi 3,3,0 */
11902 /* Was an LD reloc. */
11904 sec
= local_sections
[toc_symndx
];
11906 r_symndx
< symtab_hdr
->sh_info
;
11908 if (local_sections
[r_symndx
] == sec
)
11910 if (r_symndx
>= symtab_hdr
->sh_info
)
11912 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11914 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11915 + sec
->output_offset
11916 + sec
->output_section
->vma
);
11918 else if (toc_symndx
!= 0)
11920 r_symndx
= toc_symndx
;
11921 rel
->r_addend
= toc_addend
;
11923 r_type
= R_PPC64_TPREL16_HA
;
11924 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11925 if (offset
!= (bfd_vma
) -1)
11927 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
11928 R_PPC64_TPREL16_LO
);
11929 rel
[1].r_offset
= offset
+ d_offset
;
11930 rel
[1].r_addend
= rel
->r_addend
;
11933 bfd_put_32 (output_bfd
, insn1
,
11934 contents
+ rel
->r_offset
- d_offset
);
11935 if (offset
!= (bfd_vma
) -1)
11937 insn3
= bfd_get_32 (output_bfd
,
11938 contents
+ offset
+ 4);
11940 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11942 rel
[1].r_offset
+= 4;
11943 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11946 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11948 if ((tls_mask
& tls_gd
) == 0
11949 && (tls_gd
== 0 || toc_symndx
!= 0))
11951 /* We changed the symbol. Start over in order
11952 to get h, sym, sec etc. right. */
11959 case R_PPC64_TLSGD
:
11960 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11962 unsigned int insn2
, insn3
;
11963 bfd_vma offset
= rel
->r_offset
;
11965 if ((tls_mask
& TLS_TPRELGD
) != 0)
11968 r_type
= R_PPC64_NONE
;
11969 insn2
= 0x7c636a14; /* add 3,3,13 */
11974 if (toc_symndx
!= 0)
11976 r_symndx
= toc_symndx
;
11977 rel
->r_addend
= toc_addend
;
11979 r_type
= R_PPC64_TPREL16_LO
;
11980 rel
->r_offset
= offset
+ d_offset
;
11981 insn2
= 0x38630000; /* addi 3,3,0 */
11983 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11984 /* Zap the reloc on the _tls_get_addr call too. */
11985 BFD_ASSERT (offset
== rel
[1].r_offset
);
11986 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11987 insn3
= bfd_get_32 (output_bfd
,
11988 contents
+ offset
+ 4);
11990 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11992 rel
->r_offset
+= 4;
11993 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11996 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11997 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12005 case R_PPC64_TLSLD
:
12006 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12008 unsigned int insn2
, insn3
;
12009 bfd_vma offset
= rel
->r_offset
;
12012 sec
= local_sections
[toc_symndx
];
12014 r_symndx
< symtab_hdr
->sh_info
;
12016 if (local_sections
[r_symndx
] == sec
)
12018 if (r_symndx
>= symtab_hdr
->sh_info
)
12020 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12022 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12023 + sec
->output_offset
12024 + sec
->output_section
->vma
);
12026 r_type
= R_PPC64_TPREL16_LO
;
12027 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12028 rel
->r_offset
= offset
+ d_offset
;
12029 /* Zap the reloc on the _tls_get_addr call too. */
12030 BFD_ASSERT (offset
== rel
[1].r_offset
);
12031 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12032 insn2
= 0x38630000; /* addi 3,3,0 */
12033 insn3
= bfd_get_32 (output_bfd
,
12034 contents
+ offset
+ 4);
12036 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12038 rel
->r_offset
+= 4;
12039 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12042 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12048 case R_PPC64_DTPMOD64
:
12049 if (rel
+ 1 < relend
12050 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12051 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12053 if ((tls_mask
& TLS_GD
) == 0)
12055 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12056 if ((tls_mask
& TLS_TPRELGD
) != 0)
12057 r_type
= R_PPC64_TPREL64
;
12060 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12061 r_type
= R_PPC64_NONE
;
12063 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12068 if ((tls_mask
& TLS_LD
) == 0)
12070 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12071 r_type
= R_PPC64_NONE
;
12072 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12077 case R_PPC64_TPREL64
:
12078 if ((tls_mask
& TLS_TPREL
) == 0)
12080 r_type
= R_PPC64_NONE
;
12081 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12086 /* Handle other relocations that tweak non-addend part of insn. */
12088 max_br_offset
= 1 << 25;
12089 addend
= rel
->r_addend
;
12095 /* Branch taken prediction relocations. */
12096 case R_PPC64_ADDR14_BRTAKEN
:
12097 case R_PPC64_REL14_BRTAKEN
:
12098 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12101 /* Branch not taken prediction relocations. */
12102 case R_PPC64_ADDR14_BRNTAKEN
:
12103 case R_PPC64_REL14_BRNTAKEN
:
12104 insn
|= bfd_get_32 (output_bfd
,
12105 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12108 case R_PPC64_REL14
:
12109 max_br_offset
= 1 << 15;
12112 case R_PPC64_REL24
:
12113 /* Calls to functions with a different TOC, such as calls to
12114 shared objects, need to alter the TOC pointer. This is
12115 done using a linkage stub. A REL24 branching to these
12116 linkage stubs needs to be followed by a nop, as the nop
12117 will be replaced with an instruction to restore the TOC
12122 && h
->oh
->is_func_descriptor
)
12123 fdh
= ppc_follow_link (h
->oh
);
12124 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12125 if (stub_entry
!= NULL
12126 && (stub_entry
->stub_type
== ppc_stub_plt_call
12127 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12128 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12130 bfd_boolean can_plt_call
= FALSE
;
12132 if (rel
->r_offset
+ 8 <= input_section
->size
)
12135 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12137 || nop
== CROR_151515
|| nop
== CROR_313131
)
12140 && (h
== htab
->tls_get_addr_fd
12141 || h
== htab
->tls_get_addr
)
12142 && !htab
->no_tls_get_addr_opt
)
12144 /* Special stub used, leave nop alone. */
12147 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12148 contents
+ rel
->r_offset
+ 4);
12149 can_plt_call
= TRUE
;
12155 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12157 /* If this is a plain branch rather than a branch
12158 and link, don't require a nop. However, don't
12159 allow tail calls in a shared library as they
12160 will result in r2 being corrupted. */
12162 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12163 if (info
->executable
&& (br
& 1) == 0)
12164 can_plt_call
= TRUE
;
12169 && strcmp (h
->elf
.root
.root
.string
,
12170 ".__libc_start_main") == 0)
12172 /* Allow crt1 branch to go via a toc adjusting stub. */
12173 can_plt_call
= TRUE
;
12177 if (strcmp (input_section
->output_section
->name
,
12179 || strcmp (input_section
->output_section
->name
,
12181 (*_bfd_error_handler
)
12182 (_("%B(%A+0x%lx): automatic multiple TOCs "
12183 "not supported using your crt files; "
12184 "recompile with -mminimal-toc or upgrade gcc"),
12187 (long) rel
->r_offset
);
12189 (*_bfd_error_handler
)
12190 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12191 "does not allow automatic multiple TOCs; "
12192 "recompile with -mminimal-toc or "
12193 "-fno-optimize-sibling-calls, "
12194 "or make `%s' extern"),
12197 (long) rel
->r_offset
,
12200 bfd_set_error (bfd_error_bad_value
);
12206 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12207 unresolved_reloc
= FALSE
;
12210 if ((stub_entry
== NULL
12211 || stub_entry
->stub_type
== ppc_stub_long_branch
12212 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12213 && get_opd_info (sec
) != NULL
)
12215 /* The branch destination is the value of the opd entry. */
12216 bfd_vma off
= (relocation
+ addend
12217 - sec
->output_section
->vma
12218 - sec
->output_offset
);
12219 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12220 if (dest
!= (bfd_vma
) -1)
12227 /* If the branch is out of reach we ought to have a long
12229 from
= (rel
->r_offset
12230 + input_section
->output_offset
12231 + input_section
->output_section
->vma
);
12233 if (stub_entry
!= NULL
12234 && (stub_entry
->stub_type
== ppc_stub_long_branch
12235 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12236 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12237 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12238 || (relocation
+ addend
- from
+ max_br_offset
12239 < 2 * max_br_offset
)))
12240 /* Don't use the stub if this branch is in range. */
12243 if (stub_entry
!= NULL
)
12245 /* Munge up the value and addend so that we call the stub
12246 rather than the procedure directly. */
12247 relocation
= (stub_entry
->stub_offset
12248 + stub_entry
->stub_sec
->output_offset
12249 + stub_entry
->stub_sec
->output_section
->vma
);
12257 /* Set 'a' bit. This is 0b00010 in BO field for branch
12258 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12259 for branch on CTR insns (BO == 1a00t or 1a01t). */
12260 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12261 insn
|= 0x02 << 21;
12262 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12263 insn
|= 0x08 << 21;
12269 /* Invert 'y' bit if not the default. */
12270 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12271 insn
^= 0x01 << 21;
12274 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12277 /* NOP out calls to undefined weak functions.
12278 We can thus call a weak function without first
12279 checking whether the function is defined. */
12281 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12282 && h
->elf
.dynindx
== -1
12283 && r_type
== R_PPC64_REL24
12287 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12293 /* Set `addend'. */
12298 (*_bfd_error_handler
)
12299 (_("%B: unknown relocation type %d for symbol %s"),
12300 input_bfd
, (int) r_type
, sym_name
);
12302 bfd_set_error (bfd_error_bad_value
);
12308 case R_PPC64_TLSGD
:
12309 case R_PPC64_TLSLD
:
12310 case R_PPC64_GNU_VTINHERIT
:
12311 case R_PPC64_GNU_VTENTRY
:
12314 /* GOT16 relocations. Like an ADDR16 using the symbol's
12315 address in the GOT as relocation value instead of the
12316 symbol's value itself. Also, create a GOT entry for the
12317 symbol and put the symbol value there. */
12318 case R_PPC64_GOT_TLSGD16
:
12319 case R_PPC64_GOT_TLSGD16_LO
:
12320 case R_PPC64_GOT_TLSGD16_HI
:
12321 case R_PPC64_GOT_TLSGD16_HA
:
12322 tls_type
= TLS_TLS
| TLS_GD
;
12325 case R_PPC64_GOT_TLSLD16
:
12326 case R_PPC64_GOT_TLSLD16_LO
:
12327 case R_PPC64_GOT_TLSLD16_HI
:
12328 case R_PPC64_GOT_TLSLD16_HA
:
12329 tls_type
= TLS_TLS
| TLS_LD
;
12332 case R_PPC64_GOT_TPREL16_DS
:
12333 case R_PPC64_GOT_TPREL16_LO_DS
:
12334 case R_PPC64_GOT_TPREL16_HI
:
12335 case R_PPC64_GOT_TPREL16_HA
:
12336 tls_type
= TLS_TLS
| TLS_TPREL
;
12339 case R_PPC64_GOT_DTPREL16_DS
:
12340 case R_PPC64_GOT_DTPREL16_LO_DS
:
12341 case R_PPC64_GOT_DTPREL16_HI
:
12342 case R_PPC64_GOT_DTPREL16_HA
:
12343 tls_type
= TLS_TLS
| TLS_DTPREL
;
12346 case R_PPC64_GOT16
:
12347 case R_PPC64_GOT16_LO
:
12348 case R_PPC64_GOT16_HI
:
12349 case R_PPC64_GOT16_HA
:
12350 case R_PPC64_GOT16_DS
:
12351 case R_PPC64_GOT16_LO_DS
:
12354 /* Relocation is to the entry for this symbol in the global
12359 unsigned long indx
= 0;
12360 struct got_entry
*ent
;
12362 if (tls_type
== (TLS_TLS
| TLS_LD
)
12364 || !h
->elf
.def_dynamic
))
12365 ent
= ppc64_tlsld_got (input_bfd
);
12371 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12372 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12375 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
12376 /* This is actually a static link, or it is a
12377 -Bsymbolic link and the symbol is defined
12378 locally, or the symbol was forced to be local
12379 because of a version file. */
12383 indx
= h
->elf
.dynindx
;
12384 unresolved_reloc
= FALSE
;
12386 ent
= h
->elf
.got
.glist
;
12390 if (local_got_ents
== NULL
)
12392 ent
= local_got_ents
[r_symndx
];
12395 for (; ent
!= NULL
; ent
= ent
->next
)
12396 if (ent
->addend
== orig_addend
12397 && ent
->owner
== input_bfd
12398 && ent
->tls_type
== tls_type
)
12404 if (ent
->is_indirect
)
12405 ent
= ent
->got
.ent
;
12406 offp
= &ent
->got
.offset
;
12407 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12411 /* The offset must always be a multiple of 8. We use the
12412 least significant bit to record whether we have already
12413 processed this entry. */
12415 if ((off
& 1) != 0)
12419 /* Generate relocs for the dynamic linker, except in
12420 the case of TLSLD where we'll use one entry per
12428 ? h
->elf
.type
== STT_GNU_IFUNC
12429 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12430 if ((info
->shared
|| indx
!= 0)
12432 || (tls_type
== (TLS_TLS
| TLS_LD
)
12433 && !h
->elf
.def_dynamic
)
12434 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12435 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12436 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12438 relgot
= htab
->reliplt
;
12439 if (relgot
!= NULL
)
12441 outrel
.r_offset
= (got
->output_section
->vma
12442 + got
->output_offset
12444 outrel
.r_addend
= addend
;
12445 if (tls_type
& (TLS_LD
| TLS_GD
))
12447 outrel
.r_addend
= 0;
12448 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12449 if (tls_type
== (TLS_TLS
| TLS_GD
))
12451 loc
= relgot
->contents
;
12452 loc
+= (relgot
->reloc_count
++
12453 * sizeof (Elf64_External_Rela
));
12454 bfd_elf64_swap_reloca_out (output_bfd
,
12456 outrel
.r_offset
+= 8;
12457 outrel
.r_addend
= addend
;
12459 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12462 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12463 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12464 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12465 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12466 else if (indx
!= 0)
12467 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12471 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12473 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12475 /* Write the .got section contents for the sake
12477 loc
= got
->contents
+ off
;
12478 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12482 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12484 outrel
.r_addend
+= relocation
;
12485 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12486 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12488 loc
= relgot
->contents
;
12489 loc
+= (relgot
->reloc_count
++
12490 * sizeof (Elf64_External_Rela
));
12491 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12494 /* Init the .got section contents here if we're not
12495 emitting a reloc. */
12498 relocation
+= addend
;
12499 if (tls_type
== (TLS_TLS
| TLS_LD
))
12501 else if (tls_type
!= 0)
12503 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12504 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12505 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12507 if (tls_type
== (TLS_TLS
| TLS_GD
))
12509 bfd_put_64 (output_bfd
, relocation
,
12510 got
->contents
+ off
+ 8);
12515 bfd_put_64 (output_bfd
, relocation
,
12516 got
->contents
+ off
);
12520 if (off
>= (bfd_vma
) -2)
12523 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12524 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12528 case R_PPC64_PLT16_HA
:
12529 case R_PPC64_PLT16_HI
:
12530 case R_PPC64_PLT16_LO
:
12531 case R_PPC64_PLT32
:
12532 case R_PPC64_PLT64
:
12533 /* Relocation is to the entry for this symbol in the
12534 procedure linkage table. */
12536 /* Resolve a PLT reloc against a local symbol directly,
12537 without using the procedure linkage table. */
12541 /* It's possible that we didn't make a PLT entry for this
12542 symbol. This happens when statically linking PIC code,
12543 or when using -Bsymbolic. Go find a match if there is a
12545 if (htab
->plt
!= NULL
)
12547 struct plt_entry
*ent
;
12548 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12549 if (ent
->addend
== orig_addend
12550 && ent
->plt
.offset
!= (bfd_vma
) -1)
12552 relocation
= (htab
->plt
->output_section
->vma
12553 + htab
->plt
->output_offset
12554 + ent
->plt
.offset
);
12555 unresolved_reloc
= FALSE
;
12561 /* Relocation value is TOC base. */
12562 relocation
= TOCstart
;
12564 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12565 else if (unresolved_reloc
)
12567 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12568 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12570 unresolved_reloc
= TRUE
;
12573 /* TOC16 relocs. We want the offset relative to the TOC base,
12574 which is the address of the start of the TOC plus 0x8000.
12575 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12577 case R_PPC64_TOC16
:
12578 case R_PPC64_TOC16_LO
:
12579 case R_PPC64_TOC16_HI
:
12580 case R_PPC64_TOC16_DS
:
12581 case R_PPC64_TOC16_LO_DS
:
12582 case R_PPC64_TOC16_HA
:
12583 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12586 /* Relocate against the beginning of the section. */
12587 case R_PPC64_SECTOFF
:
12588 case R_PPC64_SECTOFF_LO
:
12589 case R_PPC64_SECTOFF_HI
:
12590 case R_PPC64_SECTOFF_DS
:
12591 case R_PPC64_SECTOFF_LO_DS
:
12592 case R_PPC64_SECTOFF_HA
:
12594 addend
-= sec
->output_section
->vma
;
12597 case R_PPC64_REL16
:
12598 case R_PPC64_REL16_LO
:
12599 case R_PPC64_REL16_HI
:
12600 case R_PPC64_REL16_HA
:
12603 case R_PPC64_REL14
:
12604 case R_PPC64_REL14_BRNTAKEN
:
12605 case R_PPC64_REL14_BRTAKEN
:
12606 case R_PPC64_REL24
:
12609 case R_PPC64_TPREL16
:
12610 case R_PPC64_TPREL16_LO
:
12611 case R_PPC64_TPREL16_HI
:
12612 case R_PPC64_TPREL16_HA
:
12613 case R_PPC64_TPREL16_DS
:
12614 case R_PPC64_TPREL16_LO_DS
:
12615 case R_PPC64_TPREL16_HIGHER
:
12616 case R_PPC64_TPREL16_HIGHERA
:
12617 case R_PPC64_TPREL16_HIGHEST
:
12618 case R_PPC64_TPREL16_HIGHESTA
:
12620 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12621 && h
->elf
.dynindx
== -1)
12623 /* Make this relocation against an undefined weak symbol
12624 resolve to zero. This is really just a tweak, since
12625 code using weak externs ought to check that they are
12626 defined before using them. */
12627 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12629 insn
= bfd_get_32 (output_bfd
, p
);
12630 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12632 bfd_put_32 (output_bfd
, insn
, p
);
12635 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12637 /* The TPREL16 relocs shouldn't really be used in shared
12638 libs as they will result in DT_TEXTREL being set, but
12639 support them anyway. */
12643 case R_PPC64_DTPREL16
:
12644 case R_PPC64_DTPREL16_LO
:
12645 case R_PPC64_DTPREL16_HI
:
12646 case R_PPC64_DTPREL16_HA
:
12647 case R_PPC64_DTPREL16_DS
:
12648 case R_PPC64_DTPREL16_LO_DS
:
12649 case R_PPC64_DTPREL16_HIGHER
:
12650 case R_PPC64_DTPREL16_HIGHERA
:
12651 case R_PPC64_DTPREL16_HIGHEST
:
12652 case R_PPC64_DTPREL16_HIGHESTA
:
12653 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12656 case R_PPC64_DTPMOD64
:
12661 case R_PPC64_TPREL64
:
12662 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12665 case R_PPC64_DTPREL64
:
12666 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12669 /* Relocations that may need to be propagated if this is a
12671 case R_PPC64_REL30
:
12672 case R_PPC64_REL32
:
12673 case R_PPC64_REL64
:
12674 case R_PPC64_ADDR14
:
12675 case R_PPC64_ADDR14_BRNTAKEN
:
12676 case R_PPC64_ADDR14_BRTAKEN
:
12677 case R_PPC64_ADDR16
:
12678 case R_PPC64_ADDR16_DS
:
12679 case R_PPC64_ADDR16_HA
:
12680 case R_PPC64_ADDR16_HI
:
12681 case R_PPC64_ADDR16_HIGHER
:
12682 case R_PPC64_ADDR16_HIGHERA
:
12683 case R_PPC64_ADDR16_HIGHEST
:
12684 case R_PPC64_ADDR16_HIGHESTA
:
12685 case R_PPC64_ADDR16_LO
:
12686 case R_PPC64_ADDR16_LO_DS
:
12687 case R_PPC64_ADDR24
:
12688 case R_PPC64_ADDR32
:
12689 case R_PPC64_ADDR64
:
12690 case R_PPC64_UADDR16
:
12691 case R_PPC64_UADDR32
:
12692 case R_PPC64_UADDR64
:
12694 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12697 if (NO_OPD_RELOCS
&& is_opd
)
12702 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12703 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12704 && (must_be_dyn_reloc (info
, r_type
)
12705 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12706 || (ELIMINATE_COPY_RELOCS
12709 && h
->elf
.dynindx
!= -1
12710 && !h
->elf
.non_got_ref
12711 && !h
->elf
.def_regular
)
12714 ? h
->elf
.type
== STT_GNU_IFUNC
12715 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12717 bfd_boolean skip
, relocate
;
12721 /* When generating a dynamic object, these relocations
12722 are copied into the output file to be resolved at run
12728 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12729 input_section
, rel
->r_offset
);
12730 if (out_off
== (bfd_vma
) -1)
12732 else if (out_off
== (bfd_vma
) -2)
12733 skip
= TRUE
, relocate
= TRUE
;
12734 out_off
+= (input_section
->output_section
->vma
12735 + input_section
->output_offset
);
12736 outrel
.r_offset
= out_off
;
12737 outrel
.r_addend
= rel
->r_addend
;
12739 /* Optimize unaligned reloc use. */
12740 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12741 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12742 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12743 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12744 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12745 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12746 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12747 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12748 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12751 memset (&outrel
, 0, sizeof outrel
);
12752 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
12754 && r_type
!= R_PPC64_TOC
)
12755 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12758 /* This symbol is local, or marked to become local,
12759 or this is an opd section reloc which must point
12760 at a local function. */
12761 outrel
.r_addend
+= relocation
;
12762 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12764 if (is_opd
&& h
!= NULL
)
12766 /* Lie about opd entries. This case occurs
12767 when building shared libraries and we
12768 reference a function in another shared
12769 lib. The same thing happens for a weak
12770 definition in an application that's
12771 overridden by a strong definition in a
12772 shared lib. (I believe this is a generic
12773 bug in binutils handling of weak syms.)
12774 In these cases we won't use the opd
12775 entry in this lib. */
12776 unresolved_reloc
= FALSE
;
12779 && r_type
== R_PPC64_ADDR64
12781 ? h
->elf
.type
== STT_GNU_IFUNC
12782 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12783 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12786 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12788 /* We need to relocate .opd contents for ld.so.
12789 Prelink also wants simple and consistent rules
12790 for relocs. This make all RELATIVE relocs have
12791 *r_offset equal to r_addend. */
12800 ? h
->elf
.type
== STT_GNU_IFUNC
12801 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12803 (*_bfd_error_handler
)
12804 (_("%B(%A+0x%lx): relocation %s for indirect "
12805 "function %s unsupported"),
12808 (long) rel
->r_offset
,
12809 ppc64_elf_howto_table
[r_type
]->name
,
12813 else if (r_symndx
== 0 || bfd_is_abs_section (sec
))
12815 else if (sec
== NULL
|| sec
->owner
== NULL
)
12817 bfd_set_error (bfd_error_bad_value
);
12824 osec
= sec
->output_section
;
12825 indx
= elf_section_data (osec
)->dynindx
;
12829 if ((osec
->flags
& SEC_READONLY
) == 0
12830 && htab
->elf
.data_index_section
!= NULL
)
12831 osec
= htab
->elf
.data_index_section
;
12833 osec
= htab
->elf
.text_index_section
;
12834 indx
= elf_section_data (osec
)->dynindx
;
12836 BFD_ASSERT (indx
!= 0);
12838 /* We are turning this relocation into one
12839 against a section symbol, so subtract out
12840 the output section's address but not the
12841 offset of the input section in the output
12843 outrel
.r_addend
-= osec
->vma
;
12846 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
12850 sreloc
= elf_section_data (input_section
)->sreloc
;
12851 if (!htab
->elf
.dynamic_sections_created
)
12852 sreloc
= htab
->reliplt
;
12853 if (sreloc
== NULL
)
12856 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
12859 loc
= sreloc
->contents
;
12860 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12861 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12863 /* If this reloc is against an external symbol, it will
12864 be computed at runtime, so there's no need to do
12865 anything now. However, for the sake of prelink ensure
12866 that the section contents are a known value. */
12869 unresolved_reloc
= FALSE
;
12870 /* The value chosen here is quite arbitrary as ld.so
12871 ignores section contents except for the special
12872 case of .opd where the contents might be accessed
12873 before relocation. Choose zero, as that won't
12874 cause reloc overflow. */
12877 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12878 to improve backward compatibility with older
12880 if (r_type
== R_PPC64_ADDR64
)
12881 addend
= outrel
.r_addend
;
12882 /* Adjust pc_relative relocs to have zero in *r_offset. */
12883 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
12884 addend
= (input_section
->output_section
->vma
12885 + input_section
->output_offset
12892 case R_PPC64_GLOB_DAT
:
12893 case R_PPC64_JMP_SLOT
:
12894 case R_PPC64_JMP_IREL
:
12895 case R_PPC64_RELATIVE
:
12896 /* We shouldn't ever see these dynamic relocs in relocatable
12898 /* Fall through. */
12900 case R_PPC64_PLTGOT16
:
12901 case R_PPC64_PLTGOT16_DS
:
12902 case R_PPC64_PLTGOT16_HA
:
12903 case R_PPC64_PLTGOT16_HI
:
12904 case R_PPC64_PLTGOT16_LO
:
12905 case R_PPC64_PLTGOT16_LO_DS
:
12906 case R_PPC64_PLTREL32
:
12907 case R_PPC64_PLTREL64
:
12908 /* These ones haven't been implemented yet. */
12910 (*_bfd_error_handler
)
12911 (_("%B: relocation %s is not supported for symbol %s."),
12913 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12915 bfd_set_error (bfd_error_invalid_operation
);
12920 /* Multi-instruction sequences that access the TOC can be
12921 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12922 to nop; addi rb,r2,x; */
12928 case R_PPC64_GOT_TLSLD16_HI
:
12929 case R_PPC64_GOT_TLSGD16_HI
:
12930 case R_PPC64_GOT_TPREL16_HI
:
12931 case R_PPC64_GOT_DTPREL16_HI
:
12932 case R_PPC64_GOT16_HI
:
12933 case R_PPC64_TOC16_HI
:
12934 /* These relocs would only be useful if building up an
12935 offset to later add to r2, perhaps in an indexed
12936 addressing mode instruction. Don't try to optimize.
12937 Unfortunately, the possibility of someone building up an
12938 offset like this or even with the HA relocs, means that
12939 we need to check the high insn when optimizing the low
12943 case R_PPC64_GOT_TLSLD16_HA
:
12944 case R_PPC64_GOT_TLSGD16_HA
:
12945 case R_PPC64_GOT_TPREL16_HA
:
12946 case R_PPC64_GOT_DTPREL16_HA
:
12947 case R_PPC64_GOT16_HA
:
12948 case R_PPC64_TOC16_HA
:
12949 /* For now we don't nop out the first instruction. */
12952 case R_PPC64_GOT_TLSLD16_LO
:
12953 case R_PPC64_GOT_TLSGD16_LO
:
12954 case R_PPC64_GOT_TPREL16_LO_DS
:
12955 case R_PPC64_GOT_DTPREL16_LO_DS
:
12956 case R_PPC64_GOT16_LO
:
12957 case R_PPC64_GOT16_LO_DS
:
12958 case R_PPC64_TOC16_LO
:
12959 case R_PPC64_TOC16_LO_DS
:
12960 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
12962 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
12963 insn
= bfd_get_32 (input_bfd
, p
);
12964 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
12965 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
12966 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
12967 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
12968 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
12969 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
12970 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
12971 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
12972 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
12973 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
12974 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
12975 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
12976 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
12977 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
12978 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
12979 && (insn
& 3) != 1)
12980 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
12981 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
12983 unsigned int reg
= (insn
>> 16) & 0x1f;
12984 if (ha_reloc_match (relocs
, rel
, reg
, input_bfd
, contents
))
12986 insn
&= ~(0x1f << 16);
12988 bfd_put_32 (input_bfd
, insn
, p
);
12995 /* Do any further special processing. */
13001 case R_PPC64_ADDR16_HA
:
13002 case R_PPC64_REL16_HA
:
13003 case R_PPC64_ADDR16_HIGHERA
:
13004 case R_PPC64_ADDR16_HIGHESTA
:
13005 case R_PPC64_TOC16_HA
:
13006 case R_PPC64_SECTOFF_HA
:
13007 case R_PPC64_TPREL16_HA
:
13008 case R_PPC64_DTPREL16_HA
:
13009 case R_PPC64_TPREL16_HIGHER
:
13010 case R_PPC64_TPREL16_HIGHERA
:
13011 case R_PPC64_TPREL16_HIGHEST
:
13012 case R_PPC64_TPREL16_HIGHESTA
:
13013 case R_PPC64_DTPREL16_HIGHER
:
13014 case R_PPC64_DTPREL16_HIGHERA
:
13015 case R_PPC64_DTPREL16_HIGHEST
:
13016 case R_PPC64_DTPREL16_HIGHESTA
:
13017 /* It's just possible that this symbol is a weak symbol
13018 that's not actually defined anywhere. In that case,
13019 'sec' would be NULL, and we should leave the symbol
13020 alone (it will be set to zero elsewhere in the link). */
13025 case R_PPC64_GOT16_HA
:
13026 case R_PPC64_PLTGOT16_HA
:
13027 case R_PPC64_PLT16_HA
:
13028 case R_PPC64_GOT_TLSGD16_HA
:
13029 case R_PPC64_GOT_TLSLD16_HA
:
13030 case R_PPC64_GOT_TPREL16_HA
:
13031 case R_PPC64_GOT_DTPREL16_HA
:
13032 /* Add 0x10000 if sign bit in 0:15 is set.
13033 Bits 0:15 are not used. */
13037 case R_PPC64_ADDR16_DS
:
13038 case R_PPC64_ADDR16_LO_DS
:
13039 case R_PPC64_GOT16_DS
:
13040 case R_PPC64_GOT16_LO_DS
:
13041 case R_PPC64_PLT16_LO_DS
:
13042 case R_PPC64_SECTOFF_DS
:
13043 case R_PPC64_SECTOFF_LO_DS
:
13044 case R_PPC64_TOC16_DS
:
13045 case R_PPC64_TOC16_LO_DS
:
13046 case R_PPC64_PLTGOT16_DS
:
13047 case R_PPC64_PLTGOT16_LO_DS
:
13048 case R_PPC64_GOT_TPREL16_DS
:
13049 case R_PPC64_GOT_TPREL16_LO_DS
:
13050 case R_PPC64_GOT_DTPREL16_DS
:
13051 case R_PPC64_GOT_DTPREL16_LO_DS
:
13052 case R_PPC64_TPREL16_DS
:
13053 case R_PPC64_TPREL16_LO_DS
:
13054 case R_PPC64_DTPREL16_DS
:
13055 case R_PPC64_DTPREL16_LO_DS
:
13056 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13058 /* If this reloc is against an lq insn, then the value must be
13059 a multiple of 16. This is somewhat of a hack, but the
13060 "correct" way to do this by defining _DQ forms of all the
13061 _DS relocs bloats all reloc switches in this file. It
13062 doesn't seem to make much sense to use any of these relocs
13063 in data, so testing the insn should be safe. */
13064 if ((insn
& (0x3f << 26)) == (56u << 26))
13066 if (((relocation
+ addend
) & mask
) != 0)
13068 (*_bfd_error_handler
)
13069 (_("%B: error: relocation %s not a multiple of %d"),
13071 ppc64_elf_howto_table
[r_type
]->name
,
13073 bfd_set_error (bfd_error_bad_value
);
13080 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13081 because such sections are not SEC_ALLOC and thus ld.so will
13082 not process them. */
13083 if (unresolved_reloc
13084 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13085 && h
->elf
.def_dynamic
))
13087 (*_bfd_error_handler
)
13088 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13091 (long) rel
->r_offset
,
13092 ppc64_elf_howto_table
[(int) r_type
]->name
,
13093 h
->elf
.root
.root
.string
);
13097 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13105 if (r
!= bfd_reloc_ok
)
13107 if (sym_name
== NULL
)
13108 sym_name
= "(null)";
13109 if (r
== bfd_reloc_overflow
)
13114 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13115 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13117 /* Assume this is a call protected by other code that
13118 detects the symbol is undefined. If this is the case,
13119 we can safely ignore the overflow. If not, the
13120 program is hosed anyway, and a little warning isn't
13126 if (!((*info
->callbacks
->reloc_overflow
)
13127 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13128 ppc64_elf_howto_table
[r_type
]->name
,
13129 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13134 (*_bfd_error_handler
)
13135 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13138 (long) rel
->r_offset
,
13139 ppc64_elf_howto_table
[r_type
]->name
,
13147 /* If we're emitting relocations, then shortly after this function
13148 returns, reloc offsets and addends for this section will be
13149 adjusted. Worse, reloc symbol indices will be for the output
13150 file rather than the input. Save a copy of the relocs for
13151 opd_entry_value. */
13152 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13155 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13156 rel
= bfd_alloc (input_bfd
, amt
);
13157 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13158 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13161 memcpy (rel
, relocs
, amt
);
13166 /* Adjust the value of any local symbols in opd sections. */
13169 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13170 const char *name ATTRIBUTE_UNUSED
,
13171 Elf_Internal_Sym
*elfsym
,
13172 asection
*input_sec
,
13173 struct elf_link_hash_entry
*h
)
13175 struct _opd_sec_data
*opd
;
13182 opd
= get_opd_info (input_sec
);
13183 if (opd
== NULL
|| opd
->adjust
== NULL
)
13186 value
= elfsym
->st_value
- input_sec
->output_offset
;
13187 if (!info
->relocatable
)
13188 value
-= input_sec
->output_section
->vma
;
13190 adjust
= opd
->adjust
[value
/ 8];
13194 elfsym
->st_value
+= adjust
;
13198 /* Finish up dynamic symbol handling. We set the contents of various
13199 dynamic sections here. */
13202 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13203 struct bfd_link_info
*info
,
13204 struct elf_link_hash_entry
*h
,
13205 Elf_Internal_Sym
*sym
)
13207 struct ppc_link_hash_table
*htab
;
13208 struct plt_entry
*ent
;
13209 Elf_Internal_Rela rela
;
13212 htab
= ppc_hash_table (info
);
13216 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13217 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13219 /* This symbol has an entry in the procedure linkage
13220 table. Set it up. */
13221 if (!htab
->elf
.dynamic_sections_created
13222 || h
->dynindx
== -1)
13224 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13226 && (h
->root
.type
== bfd_link_hash_defined
13227 || h
->root
.type
== bfd_link_hash_defweak
));
13228 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13229 + htab
->iplt
->output_offset
13230 + ent
->plt
.offset
);
13231 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13232 rela
.r_addend
= (h
->root
.u
.def
.value
13233 + h
->root
.u
.def
.section
->output_offset
13234 + h
->root
.u
.def
.section
->output_section
->vma
13236 loc
= (htab
->reliplt
->contents
13237 + (htab
->reliplt
->reloc_count
++
13238 * sizeof (Elf64_External_Rela
)));
13242 rela
.r_offset
= (htab
->plt
->output_section
->vma
13243 + htab
->plt
->output_offset
13244 + ent
->plt
.offset
);
13245 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13246 rela
.r_addend
= ent
->addend
;
13247 loc
= (htab
->relplt
->contents
13248 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13249 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13251 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13256 /* This symbol needs a copy reloc. Set it up. */
13258 if (h
->dynindx
== -1
13259 || (h
->root
.type
!= bfd_link_hash_defined
13260 && h
->root
.type
!= bfd_link_hash_defweak
)
13261 || htab
->relbss
== NULL
)
13264 rela
.r_offset
= (h
->root
.u
.def
.value
13265 + h
->root
.u
.def
.section
->output_section
->vma
13266 + h
->root
.u
.def
.section
->output_offset
);
13267 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13269 loc
= htab
->relbss
->contents
;
13270 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13271 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13274 /* Mark some specially defined symbols as absolute. */
13275 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13276 sym
->st_shndx
= SHN_ABS
;
13281 /* Used to decide how to sort relocs in an optimal manner for the
13282 dynamic linker, before writing them out. */
13284 static enum elf_reloc_type_class
13285 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13287 enum elf_ppc64_reloc_type r_type
;
13289 r_type
= ELF64_R_TYPE (rela
->r_info
);
13292 case R_PPC64_RELATIVE
:
13293 return reloc_class_relative
;
13294 case R_PPC64_JMP_SLOT
:
13295 return reloc_class_plt
;
13297 return reloc_class_copy
;
13299 return reloc_class_normal
;
13303 /* Finish up the dynamic sections. */
13306 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13307 struct bfd_link_info
*info
)
13309 struct ppc_link_hash_table
*htab
;
13313 htab
= ppc_hash_table (info
);
13317 dynobj
= htab
->elf
.dynobj
;
13318 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13320 if (htab
->elf
.dynamic_sections_created
)
13322 Elf64_External_Dyn
*dyncon
, *dynconend
;
13324 if (sdyn
== NULL
|| htab
->got
== NULL
)
13327 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13328 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13329 for (; dyncon
< dynconend
; dyncon
++)
13331 Elf_Internal_Dyn dyn
;
13334 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13341 case DT_PPC64_GLINK
:
13343 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13344 /* We stupidly defined DT_PPC64_GLINK to be the start
13345 of glink rather than the first entry point, which is
13346 what ld.so needs, and now have a bigger stub to
13347 support automatic multiple TOCs. */
13348 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13352 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13355 dyn
.d_un
.d_ptr
= s
->vma
;
13358 case DT_PPC64_OPDSZ
:
13359 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13362 dyn
.d_un
.d_val
= s
->size
;
13367 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13372 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13376 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13380 /* Don't count procedure linkage table relocs in the
13381 overall reloc count. */
13385 dyn
.d_un
.d_val
-= s
->size
;
13389 /* We may not be using the standard ELF linker script.
13390 If .rela.plt is the first .rela section, we adjust
13391 DT_RELA to not include it. */
13395 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13397 dyn
.d_un
.d_ptr
+= s
->size
;
13401 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13405 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13407 /* Fill in the first entry in the global offset table.
13408 We use it to hold the link-time TOCbase. */
13409 bfd_put_64 (output_bfd
,
13410 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13411 htab
->got
->contents
);
13413 /* Set .got entry size. */
13414 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13417 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13419 /* Set .plt entry size. */
13420 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13424 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13425 brlt ourselves if emitrelocations. */
13426 if (htab
->brlt
!= NULL
13427 && htab
->brlt
->reloc_count
!= 0
13428 && !_bfd_elf_link_output_relocs (output_bfd
,
13430 &elf_section_data (htab
->brlt
)->rel_hdr
,
13431 elf_section_data (htab
->brlt
)->relocs
,
13435 if (htab
->glink
!= NULL
13436 && htab
->glink
->reloc_count
!= 0
13437 && !_bfd_elf_link_output_relocs (output_bfd
,
13439 &elf_section_data (htab
->glink
)->rel_hdr
,
13440 elf_section_data (htab
->glink
)->relocs
,
13444 /* We need to handle writing out multiple GOT sections ourselves,
13445 since we didn't add them to DYNOBJ. We know dynobj is the first
13447 while ((dynobj
= dynobj
->link_next
) != NULL
)
13451 if (!is_ppc64_elf (dynobj
))
13454 s
= ppc64_elf_tdata (dynobj
)->got
;
13457 && s
->output_section
!= bfd_abs_section_ptr
13458 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13459 s
->contents
, s
->output_offset
,
13462 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13465 && s
->output_section
!= bfd_abs_section_ptr
13466 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13467 s
->contents
, s
->output_offset
,
13475 #include "elf64-target.h"