1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_vma opd_entry_value
55 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_symbol_offset 0
71 #define elf_backend_got_header_size 8
72 #define elf_backend_can_gc_sections 1
73 #define elf_backend_can_refcount 1
74 #define elf_backend_rela_normal 1
76 #define bfd_elf64_mkobject ppc64_elf_mkobject
77 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
82 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
84 #define elf_backend_object_p ppc64_elf_object_p
85 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
87 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
89 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
90 #define elf_backend_check_directives ppc64_elf_check_directives
91 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
92 #define elf_backend_check_relocs ppc64_elf_check_relocs
93 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
97 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99 #define elf_backend_relocate_section ppc64_elf_relocate_section
100 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
103 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
104 #define elf_backend_special_sections ppc64_elf_special_sections
106 /* The name of the dynamic interpreter. This is put in the .interp
108 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
110 /* The size in bytes of an entry in the procedure linkage table. */
111 #define PLT_ENTRY_SIZE 24
113 /* The initial size of the plt reserved for the dynamic linker. */
114 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
116 /* TOC base pointers offset from start of TOC. */
117 #define TOC_BASE_OFF 0x8000
119 /* Offset of tp and dtp pointers from start of TLS block. */
120 #define TP_OFFSET 0x7000
121 #define DTP_OFFSET 0x8000
123 /* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126 #define PLT_CALL_STUB_SIZE (7*4)
127 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133 #define BCTR 0x4e800420 /* bctr */
136 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
139 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
141 /* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143 #define GLINK_CALL_STUB_SIZE (16*4)
144 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
158 /* ld %r11,16(%r12) */
162 #define NOP 0x60000000
164 /* Some other nops. */
165 #define CROR_151515 0x4def7b82
166 #define CROR_313131 0x4ffffb82
168 /* .glink entries for the first 32k functions are two instructions. */
169 #define LI_R0_0 0x38000000 /* li %r0,0 */
170 #define B_DOT 0x48000000 /* b . */
172 /* After that, we need two instructions to load the index, followed by
174 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
175 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
177 /* Instructions used by the save and restore reg functions. */
178 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
182 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
184 #define LI_R12_0 0x39800000 /* li %r12,0 */
185 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
188 #define BLR 0x4e800020 /* blr */
190 /* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
193 relocate .opd without reloc entries. */
194 #ifndef NO_OPD_RELOCS
195 #define NO_OPD_RELOCS 0
198 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
200 /* Relocation HOWTO's. */
201 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
203 static reloc_howto_type ppc64_elf_howto_raw
[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE
, /* type */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
209 FALSE
, /* pc_relative */
211 complain_overflow_dont
, /* complain_on_overflow */
212 bfd_elf_generic_reloc
, /* special_function */
213 "R_PPC64_NONE", /* name */
214 FALSE
, /* partial_inplace */
217 FALSE
), /* pcrel_offset */
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32
, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE
, /* pc_relative */
226 complain_overflow_bitfield
, /* complain_on_overflow */
227 bfd_elf_generic_reloc
, /* special_function */
228 "R_PPC64_ADDR32", /* name */
229 FALSE
, /* partial_inplace */
231 0xffffffff, /* dst_mask */
232 FALSE
), /* pcrel_offset */
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24
, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE
, /* pc_relative */
242 complain_overflow_bitfield
, /* complain_on_overflow */
243 bfd_elf_generic_reloc
, /* special_function */
244 "R_PPC64_ADDR24", /* name */
245 FALSE
, /* partial_inplace */
247 0x03fffffc, /* dst_mask */
248 FALSE
), /* pcrel_offset */
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16
, /* type */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE
, /* pc_relative */
257 complain_overflow_bitfield
, /* complain_on_overflow */
258 bfd_elf_generic_reloc
, /* special_function */
259 "R_PPC64_ADDR16", /* name */
260 FALSE
, /* partial_inplace */
262 0xffff, /* dst_mask */
263 FALSE
), /* pcrel_offset */
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO
, /* type */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE
, /* pc_relative */
272 complain_overflow_dont
,/* complain_on_overflow */
273 bfd_elf_generic_reloc
, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
275 FALSE
, /* partial_inplace */
277 0xffff, /* dst_mask */
278 FALSE
), /* pcrel_offset */
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI
, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE
, /* pc_relative */
287 complain_overflow_dont
, /* complain_on_overflow */
288 bfd_elf_generic_reloc
, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
290 FALSE
, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE
), /* pcrel_offset */
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA
, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE
, /* pc_relative */
303 complain_overflow_dont
, /* complain_on_overflow */
304 ppc64_elf_ha_reloc
, /* special_function */
305 "R_PPC64_ADDR16_HA", /* name */
306 FALSE
, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE
), /* pcrel_offset */
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14
, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE
, /* pc_relative */
319 complain_overflow_bitfield
, /* complain_on_overflow */
320 ppc64_elf_branch_reloc
, /* special_function */
321 "R_PPC64_ADDR14", /* name */
322 FALSE
, /* partial_inplace */
324 0x0000fffc, /* dst_mask */
325 FALSE
), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_bitfield
, /* complain_on_overflow */
337 ppc64_elf_brtaken_reloc
, /* special_function */
338 "R_PPC64_ADDR14_BRTAKEN",/* name */
339 FALSE
, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc
, /* special_function */
355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
356 FALSE
, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24
, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 TRUE
, /* pc_relative */
368 complain_overflow_signed
, /* complain_on_overflow */
369 ppc64_elf_branch_reloc
, /* special_function */
370 "R_PPC64_REL24", /* name */
371 FALSE
, /* partial_inplace */
373 0x03fffffc, /* dst_mask */
374 TRUE
), /* pcrel_offset */
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 ppc64_elf_branch_reloc
, /* special_function */
385 "R_PPC64_REL14", /* name */
386 FALSE
, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 TRUE
), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
394 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc
, /* special_function */
402 "R_PPC64_REL14_BRTAKEN", /* name */
403 FALSE
, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE
), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
411 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE
, /* pc_relative */
417 complain_overflow_signed
, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc
, /* special_function */
419 "R_PPC64_REL14_BRNTAKEN",/* name */
420 FALSE
, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE
), /* pcrel_offset */
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
427 HOWTO (R_PPC64_GOT16
, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE
, /* pc_relative */
433 complain_overflow_signed
, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc
, /* special_function */
435 "R_PPC64_GOT16", /* name */
436 FALSE
, /* partial_inplace */
438 0xffff, /* dst_mask */
439 FALSE
), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
443 HOWTO (R_PPC64_GOT16_LO
, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE
, /* pc_relative */
449 complain_overflow_dont
, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc
, /* special_function */
451 "R_PPC64_GOT16_LO", /* name */
452 FALSE
, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE
), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_HI
, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE
, /* pc_relative */
465 complain_overflow_dont
,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc
, /* special_function */
467 "R_PPC64_GOT16_HI", /* name */
468 FALSE
, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE
), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HA
, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_dont
,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc
, /* special_function */
483 "R_PPC64_GOT16_HA", /* name */
484 FALSE
, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE
), /* pcrel_offset */
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY
, /* type */
496 0, /* this one is variable size */
498 FALSE
, /* pc_relative */
500 complain_overflow_dont
, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc
, /* special_function */
502 "R_PPC64_COPY", /* name */
503 FALSE
, /* partial_inplace */
506 FALSE
), /* pcrel_offset */
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
510 HOWTO (R_PPC64_GLOB_DAT
, /* type */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
514 FALSE
, /* pc_relative */
516 complain_overflow_dont
, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc
, /* special_function */
518 "R_PPC64_GLOB_DAT", /* name */
519 FALSE
, /* partial_inplace */
521 ONES (64), /* dst_mask */
522 FALSE
), /* pcrel_offset */
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT
, /* type */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE
, /* pc_relative */
532 complain_overflow_dont
, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc
, /* special_function */
534 "R_PPC64_JMP_SLOT", /* name */
535 FALSE
, /* partial_inplace */
538 FALSE
), /* pcrel_offset */
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
543 HOWTO (R_PPC64_RELATIVE
, /* type */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
547 FALSE
, /* pc_relative */
549 complain_overflow_dont
, /* complain_on_overflow */
550 bfd_elf_generic_reloc
, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
552 FALSE
, /* partial_inplace */
554 ONES (64), /* dst_mask */
555 FALSE
), /* pcrel_offset */
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32
, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE
, /* pc_relative */
564 complain_overflow_bitfield
, /* complain_on_overflow */
565 bfd_elf_generic_reloc
, /* special_function */
566 "R_PPC64_UADDR32", /* name */
567 FALSE
, /* partial_inplace */
569 0xffffffff, /* dst_mask */
570 FALSE
), /* pcrel_offset */
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16
, /* type */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_bitfield
, /* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_PPC64_UADDR16", /* name */
582 FALSE
, /* partial_inplace */
584 0xffff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32
, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 TRUE
, /* pc_relative */
594 /* FIXME: Verify. Was complain_overflow_bitfield. */
595 complain_overflow_signed
, /* complain_on_overflow */
596 bfd_elf_generic_reloc
, /* special_function */
597 "R_PPC64_REL32", /* name */
598 FALSE
, /* partial_inplace */
600 0xffffffff, /* dst_mask */
601 TRUE
), /* pcrel_offset */
603 /* 32-bit relocation to the symbol's procedure linkage table. */
604 HOWTO (R_PPC64_PLT32
, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE
, /* pc_relative */
610 complain_overflow_bitfield
, /* complain_on_overflow */
611 ppc64_elf_unhandled_reloc
, /* special_function */
612 "R_PPC64_PLT32", /* name */
613 FALSE
, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 FALSE
), /* pcrel_offset */
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32
, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 TRUE
, /* pc_relative */
626 complain_overflow_signed
, /* complain_on_overflow */
627 bfd_elf_generic_reloc
, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
629 FALSE
, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 TRUE
), /* pcrel_offset */
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
636 HOWTO (R_PPC64_PLT16_LO
, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE
, /* pc_relative */
642 complain_overflow_dont
, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc
, /* special_function */
644 "R_PPC64_PLT16_LO", /* name */
645 FALSE
, /* partial_inplace */
647 0xffff, /* dst_mask */
648 FALSE
), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_HI
, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE
, /* pc_relative */
658 complain_overflow_dont
, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc
, /* special_function */
660 "R_PPC64_PLT16_HI", /* name */
661 FALSE
, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE
), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HA
, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE
, /* pc_relative */
674 complain_overflow_dont
, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc
, /* special_function */
676 "R_PPC64_PLT16_HA", /* name */
677 FALSE
, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE
), /* pcrel_offset */
682 /* 16-bit section relative relocation. */
683 HOWTO (R_PPC64_SECTOFF
, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE
, /* pc_relative */
689 complain_overflow_bitfield
, /* complain_on_overflow */
690 ppc64_elf_sectoff_reloc
, /* special_function */
691 "R_PPC64_SECTOFF", /* name */
692 FALSE
, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE
), /* pcrel_offset */
697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
698 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE
, /* pc_relative */
704 complain_overflow_dont
, /* complain_on_overflow */
705 ppc64_elf_sectoff_reloc
, /* special_function */
706 "R_PPC64_SECTOFF_LO", /* name */
707 FALSE
, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE
), /* pcrel_offset */
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE
, /* pc_relative */
719 complain_overflow_dont
, /* complain_on_overflow */
720 ppc64_elf_sectoff_reloc
, /* special_function */
721 "R_PPC64_SECTOFF_HI", /* name */
722 FALSE
, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE
), /* pcrel_offset */
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE
, /* pc_relative */
734 complain_overflow_dont
, /* complain_on_overflow */
735 ppc64_elf_sectoff_ha_reloc
, /* special_function */
736 "R_PPC64_SECTOFF_HA", /* name */
737 FALSE
, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE
), /* pcrel_offset */
742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30
, /* type */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
747 TRUE
, /* pc_relative */
749 complain_overflow_dont
, /* complain_on_overflow */
750 bfd_elf_generic_reloc
, /* special_function */
751 "R_PPC64_REL30", /* name */
752 FALSE
, /* partial_inplace */
754 0xfffffffc, /* dst_mask */
755 TRUE
), /* pcrel_offset */
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64
, /* type */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
764 FALSE
, /* pc_relative */
766 complain_overflow_dont
, /* complain_on_overflow */
767 bfd_elf_generic_reloc
, /* special_function */
768 "R_PPC64_ADDR64", /* name */
769 FALSE
, /* partial_inplace */
771 ONES (64), /* dst_mask */
772 FALSE
), /* pcrel_offset */
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE
, /* pc_relative */
781 complain_overflow_dont
, /* complain_on_overflow */
782 bfd_elf_generic_reloc
, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
784 FALSE
, /* partial_inplace */
786 0xffff, /* dst_mask */
787 FALSE
), /* pcrel_offset */
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 ppc64_elf_ha_reloc
, /* special_function */
799 "R_PPC64_ADDR16_HIGHERA", /* name */
800 FALSE
, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
815 FALSE
, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE
), /* pcrel_offset */
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_dont
, /* complain_on_overflow */
829 ppc64_elf_ha_reloc
, /* special_function */
830 "R_PPC64_ADDR16_HIGHESTA", /* name */
831 FALSE
, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE
), /* pcrel_offset */
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64
, /* type */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 FALSE
, /* pc_relative */
843 complain_overflow_dont
, /* complain_on_overflow */
844 bfd_elf_generic_reloc
, /* special_function */
845 "R_PPC64_UADDR64", /* name */
846 FALSE
, /* partial_inplace */
848 ONES (64), /* dst_mask */
849 FALSE
), /* pcrel_offset */
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64
, /* type */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 TRUE
, /* pc_relative */
858 complain_overflow_dont
, /* complain_on_overflow */
859 bfd_elf_generic_reloc
, /* special_function */
860 "R_PPC64_REL64", /* name */
861 FALSE
, /* partial_inplace */
863 ONES (64), /* dst_mask */
864 TRUE
), /* pcrel_offset */
866 /* 64-bit relocation to the symbol's procedure linkage table. */
867 HOWTO (R_PPC64_PLT64
, /* type */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 FALSE
, /* pc_relative */
873 complain_overflow_dont
, /* complain_on_overflow */
874 ppc64_elf_unhandled_reloc
, /* special_function */
875 "R_PPC64_PLT64", /* name */
876 FALSE
, /* partial_inplace */
878 ONES (64), /* dst_mask */
879 FALSE
), /* pcrel_offset */
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64
, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 TRUE
, /* pc_relative */
890 complain_overflow_dont
, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc
, /* special_function */
892 "R_PPC64_PLTREL64", /* name */
893 FALSE
, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 TRUE
), /* pcrel_offset */
898 /* 16 bit TOC-relative relocation. */
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16
, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE
, /* pc_relative */
907 complain_overflow_signed
, /* complain_on_overflow */
908 ppc64_elf_toc_reloc
, /* special_function */
909 "R_PPC64_TOC16", /* name */
910 FALSE
, /* partial_inplace */
912 0xffff, /* dst_mask */
913 FALSE
), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation without overflow. */
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO
, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_dont
, /* complain_on_overflow */
925 ppc64_elf_toc_reloc
, /* special_function */
926 "R_PPC64_TOC16_LO", /* name */
927 FALSE
, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation, high 16 bits. */
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI
, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 ppc64_elf_toc_reloc
, /* special_function */
943 "R_PPC64_TOC16_HI", /* name */
944 FALSE
, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA
, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE
, /* pc_relative */
960 complain_overflow_dont
, /* complain_on_overflow */
961 ppc64_elf_toc_ha_reloc
, /* special_function */
962 "R_PPC64_TOC16_HA", /* name */
963 FALSE
, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE
), /* pcrel_offset */
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC
, /* type */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
975 FALSE
, /* pc_relative */
977 complain_overflow_bitfield
, /* complain_on_overflow */
978 ppc64_elf_toc64_reloc
, /* special_function */
979 "R_PPC64_TOC", /* name */
980 FALSE
, /* partial_inplace */
982 ONES (64), /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16
, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE
, /* pc_relative */
1000 complain_overflow_signed
, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc
, /* special_function */
1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE
, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE
), /* pcrel_offset */
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_dont
, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc
, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE
, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc
, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE
, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE
, /* pc_relative */
1050 complain_overflow_dont
,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc
, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE
, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE
), /* pcrel_offset */
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE
, /* pc_relative */
1065 complain_overflow_bitfield
, /* complain_on_overflow */
1066 bfd_elf_generic_reloc
, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE
, /* partial_inplace */
1070 0xfffc, /* dst_mask */
1071 FALSE
), /* pcrel_offset */
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_dont
,/* complain_on_overflow */
1081 bfd_elf_generic_reloc
, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE
, /* partial_inplace */
1085 0xfffc, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS
, /* type */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_signed
, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc
, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE
, /* partial_inplace */
1100 0xfffc, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE
, /* pc_relative */
1110 complain_overflow_dont
, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc
, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE
, /* partial_inplace */
1115 0xfffc, /* dst_mask */
1116 FALSE
), /* pcrel_offset */
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE
, /* pc_relative */
1125 complain_overflow_dont
, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc
, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE
, /* partial_inplace */
1130 0xfffc, /* dst_mask */
1131 FALSE
), /* pcrel_offset */
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE
, /* pc_relative */
1140 complain_overflow_bitfield
, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc
, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE
, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 FALSE
), /* pcrel_offset */
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE
, /* pc_relative */
1155 complain_overflow_dont
, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc
, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE
, /* partial_inplace */
1160 0xfffc, /* dst_mask */
1161 FALSE
), /* pcrel_offset */
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS
, /* type */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE
, /* pc_relative */
1170 complain_overflow_signed
, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc
, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE
, /* partial_inplace */
1175 0xfffc, /* dst_mask */
1176 FALSE
), /* pcrel_offset */
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE
, /* pc_relative */
1185 complain_overflow_dont
, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc
, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE
, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE
), /* pcrel_offset */
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE
, /* pc_relative */
1201 complain_overflow_signed
, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc
, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE
, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE
), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE
, /* pc_relative */
1217 complain_overflow_dont
, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc
, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE
, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE
), /* pcrel_offset */
1225 /* Marker reloc for TLS. */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE
, /* pc_relative */
1232 complain_overflow_dont
, /* complain_on_overflow */
1233 bfd_elf_generic_reloc
, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE
, /* partial_inplace */
1238 FALSE
), /* pcrel_offset */
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64
,
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc
, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE
, /* partial_inplace */
1253 ONES (64), /* dst_mask */
1254 FALSE
), /* pcrel_offset */
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64
,
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE
, /* pc_relative */
1265 complain_overflow_dont
, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc
, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE
, /* partial_inplace */
1270 ONES (64), /* dst_mask */
1271 FALSE
), /* pcrel_offset */
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16
,
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE
, /* pc_relative */
1280 complain_overflow_signed
, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc
, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE
, /* partial_inplace */
1285 0xffff, /* dst_mask */
1286 FALSE
), /* pcrel_offset */
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO
,
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE
, /* pc_relative */
1295 complain_overflow_dont
, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc
, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE
, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE
), /* pcrel_offset */
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI
,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE
, /* pc_relative */
1310 complain_overflow_dont
, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc
, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE
, /* partial_inplace */
1315 0xffff, /* dst_mask */
1316 FALSE
), /* pcrel_offset */
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA
,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE
, /* pc_relative */
1325 complain_overflow_dont
, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc
, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE
, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE
), /* pcrel_offset */
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 FALSE
, /* pc_relative */
1340 complain_overflow_dont
, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc
, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE
, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 FALSE
), /* pcrel_offset */
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 FALSE
, /* pc_relative */
1355 complain_overflow_dont
, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc
, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE
, /* partial_inplace */
1360 0xffff, /* dst_mask */
1361 FALSE
), /* pcrel_offset */
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE
, /* pc_relative */
1370 complain_overflow_dont
, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc
, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE
, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE
), /* pcrel_offset */
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE
, /* pc_relative */
1385 complain_overflow_dont
, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc
, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE
, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE
), /* pcrel_offset */
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS
,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE
, /* pc_relative */
1400 complain_overflow_signed
, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc
, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE
, /* partial_inplace */
1405 0xfffc, /* dst_mask */
1406 FALSE
), /* pcrel_offset */
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE
, /* pc_relative */
1415 complain_overflow_dont
, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc
, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE
, /* partial_inplace */
1420 0xfffc, /* dst_mask */
1421 FALSE
), /* pcrel_offset */
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64
,
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE
, /* pc_relative */
1431 complain_overflow_dont
, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc
, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE
, /* partial_inplace */
1436 ONES (64), /* dst_mask */
1437 FALSE
), /* pcrel_offset */
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16
,
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE
, /* pc_relative */
1446 complain_overflow_signed
, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc
, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE
, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE
), /* pcrel_offset */
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO
,
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE
, /* pc_relative */
1461 complain_overflow_dont
, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc
, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE
, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE
), /* pcrel_offset */
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI
,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE
, /* pc_relative */
1476 complain_overflow_dont
, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc
, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE
, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE
), /* pcrel_offset */
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA
,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE
, /* pc_relative */
1491 complain_overflow_dont
, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc
, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE
, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE
), /* pcrel_offset */
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER
,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_dont
, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc
, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE
, /* partial_inplace */
1511 0xffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE
, /* pc_relative */
1521 complain_overflow_dont
, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc
, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE
, /* partial_inplace */
1526 0xffff, /* dst_mask */
1527 FALSE
), /* pcrel_offset */
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE
, /* pc_relative */
1536 complain_overflow_dont
, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc
, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE
, /* partial_inplace */
1541 0xffff, /* dst_mask */
1542 FALSE
), /* pcrel_offset */
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_dont
, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc
, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE
, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS
,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_signed
, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc
, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE
, /* partial_inplace */
1571 0xfffc, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS
,
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE
, /* pc_relative */
1581 complain_overflow_dont
, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc
, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE
, /* partial_inplace */
1586 0xfffc, /* dst_mask */
1587 FALSE
), /* pcrel_offset */
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16
,
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 FALSE
, /* pc_relative */
1598 complain_overflow_signed
, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc
, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
1601 FALSE
, /* partial_inplace */
1603 0xffff, /* dst_mask */
1604 FALSE
), /* pcrel_offset */
1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
, /* complain_on_overflow */
1614 ppc64_elf_unhandled_reloc
, /* special_function */
1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
1616 FALSE
, /* partial_inplace */
1618 0xffff, /* dst_mask */
1619 FALSE
), /* pcrel_offset */
1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE
, /* pc_relative */
1628 complain_overflow_dont
, /* complain_on_overflow */
1629 ppc64_elf_unhandled_reloc
, /* special_function */
1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
1631 FALSE
, /* partial_inplace */
1633 0xffff, /* dst_mask */
1634 FALSE
), /* pcrel_offset */
1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE
, /* pc_relative */
1643 complain_overflow_dont
, /* complain_on_overflow */
1644 ppc64_elf_unhandled_reloc
, /* special_function */
1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
1646 FALSE
, /* partial_inplace */
1648 0xffff, /* dst_mask */
1649 FALSE
), /* pcrel_offset */
1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16
,
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE
, /* pc_relative */
1660 complain_overflow_signed
, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc
, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
1663 FALSE
, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE
), /* pcrel_offset */
1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE
, /* pc_relative */
1675 complain_overflow_dont
, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc
, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
1678 FALSE
, /* partial_inplace */
1680 0xffff, /* dst_mask */
1681 FALSE
), /* pcrel_offset */
1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1685 16, /* rightshift */
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE
, /* pc_relative */
1690 complain_overflow_dont
, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc
, /* special_function */
1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
1693 FALSE
, /* partial_inplace */
1695 0xffff, /* dst_mask */
1696 FALSE
), /* pcrel_offset */
1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1700 16, /* rightshift */
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE
, /* pc_relative */
1705 complain_overflow_dont
, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc
, /* special_function */
1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
1708 FALSE
, /* partial_inplace */
1710 0xffff, /* dst_mask */
1711 FALSE
), /* pcrel_offset */
1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 FALSE
, /* pc_relative */
1721 complain_overflow_signed
, /* complain_on_overflow */
1722 ppc64_elf_unhandled_reloc
, /* special_function */
1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
1724 FALSE
, /* partial_inplace */
1726 0xfffc, /* dst_mask */
1727 FALSE
), /* pcrel_offset */
1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE
, /* pc_relative */
1736 complain_overflow_dont
, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc
, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1739 FALSE
, /* partial_inplace */
1741 0xfffc, /* dst_mask */
1742 FALSE
), /* pcrel_offset */
1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1746 16, /* rightshift */
1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 FALSE
, /* pc_relative */
1751 complain_overflow_dont
, /* complain_on_overflow */
1752 ppc64_elf_unhandled_reloc
, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
1754 FALSE
, /* partial_inplace */
1756 0xffff, /* dst_mask */
1757 FALSE
), /* pcrel_offset */
1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE
, /* pc_relative */
1766 complain_overflow_dont
, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc
, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE
, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE
), /* pcrel_offset */
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 FALSE
, /* pc_relative */
1782 complain_overflow_signed
, /* complain_on_overflow */
1783 ppc64_elf_unhandled_reloc
, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
1785 FALSE
, /* partial_inplace */
1787 0xfffc, /* dst_mask */
1788 FALSE
), /* pcrel_offset */
1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 FALSE
, /* pc_relative */
1797 complain_overflow_dont
, /* complain_on_overflow */
1798 ppc64_elf_unhandled_reloc
, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1800 FALSE
, /* partial_inplace */
1802 0xfffc, /* dst_mask */
1803 FALSE
), /* pcrel_offset */
1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1807 16, /* rightshift */
1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE
, /* pc_relative */
1812 complain_overflow_dont
, /* complain_on_overflow */
1813 ppc64_elf_unhandled_reloc
, /* special_function */
1814 "R_PPC64_GOT_TPREL16_HI", /* name */
1815 FALSE
, /* partial_inplace */
1817 0xffff, /* dst_mask */
1818 FALSE
), /* pcrel_offset */
1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1822 16, /* rightshift */
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE
, /* pc_relative */
1827 complain_overflow_dont
, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc
, /* special_function */
1829 "R_PPC64_GOT_TPREL16_HA", /* name */
1830 FALSE
, /* partial_inplace */
1832 0xffff, /* dst_mask */
1833 FALSE
), /* pcrel_offset */
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE
, /* pc_relative */
1842 complain_overflow_dont
, /* complain_on_overflow */
1843 NULL
, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
1845 FALSE
, /* partial_inplace */
1848 FALSE
), /* pcrel_offset */
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE
, /* pc_relative */
1857 complain_overflow_dont
, /* complain_on_overflow */
1858 NULL
, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
1860 FALSE
, /* partial_inplace */
1863 FALSE
), /* pcrel_offset */
1867 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1871 ppc_howto_init (void)
1873 unsigned int i
, type
;
1876 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1879 type
= ppc64_elf_howto_raw
[i
].type
;
1880 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1881 / sizeof (ppc64_elf_howto_table
[0])));
1882 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1886 static reloc_howto_type
*
1887 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1888 bfd_reloc_code_real_type code
)
1890 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1892 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1893 /* Initialize howto table if needed. */
1901 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1903 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1905 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1907 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1909 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1911 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1913 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1915 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1917 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1919 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1921 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1923 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1925 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1927 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1929 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1931 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1933 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1935 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1937 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1939 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1941 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1943 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1945 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1947 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1949 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1951 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1953 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1955 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1957 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1959 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1961 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1963 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1965 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1967 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1969 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1971 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1973 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1975 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1977 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1979 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1981 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1983 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1985 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1987 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1989 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1991 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1993 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1995 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1997 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
1999 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2001 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2003 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2005 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2007 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2011 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2013 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2015 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2019 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2021 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2023 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2025 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2027 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2029 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2031 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2033 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2035 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2037 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2039 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2041 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2043 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2051 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2059 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2067 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2075 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2087 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2099 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2101 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2105 return ppc64_elf_howto_table
[r
];
2108 /* Set the howto pointer for a PowerPC ELF reloc. */
2111 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2112 Elf_Internal_Rela
*dst
)
2116 /* Initialize howto table if needed. */
2117 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2120 type
= ELF64_R_TYPE (dst
->r_info
);
2121 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2122 / sizeof (ppc64_elf_howto_table
[0])));
2123 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2126 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2128 static bfd_reloc_status_type
2129 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2130 void *data
, asection
*input_section
,
2131 bfd
*output_bfd
, char **error_message
)
2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2136 if (output_bfd
!= NULL
)
2137 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2138 input_section
, output_bfd
, error_message
);
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2143 reloc_entry
->addend
+= 0x8000;
2144 return bfd_reloc_continue
;
2147 static bfd_reloc_status_type
2148 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2149 void *data
, asection
*input_section
,
2150 bfd
*output_bfd
, char **error_message
)
2152 if (output_bfd
!= NULL
)
2153 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2154 input_section
, output_bfd
, error_message
);
2156 if (strcmp (symbol
->section
->name
, ".opd") == 0
2157 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2159 bfd_vma dest
= opd_entry_value (symbol
->section
,
2160 symbol
->value
+ reloc_entry
->addend
,
2162 if (dest
!= (bfd_vma
) -1)
2163 reloc_entry
->addend
= dest
- (symbol
->value
2164 + symbol
->section
->output_section
->vma
2165 + symbol
->section
->output_offset
);
2167 return bfd_reloc_continue
;
2170 static bfd_reloc_status_type
2171 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2172 void *data
, asection
*input_section
,
2173 bfd
*output_bfd
, char **error_message
)
2176 enum elf_ppc64_reloc_type r_type
;
2177 bfd_size_type octets
;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2179 bfd_boolean is_power4
= FALSE
;
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2184 if (output_bfd
!= NULL
)
2185 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2186 input_section
, output_bfd
, error_message
);
2188 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2189 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2190 insn
&= ~(0x01 << 21);
2191 r_type
= reloc_entry
->howto
->type
;
2192 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2193 || r_type
== R_PPC64_REL14_BRTAKEN
)
2194 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2203 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2213 if (!bfd_is_com_section (symbol
->section
))
2214 target
= symbol
->value
;
2215 target
+= symbol
->section
->output_section
->vma
;
2216 target
+= symbol
->section
->output_offset
;
2217 target
+= reloc_entry
->addend
;
2219 from
= (reloc_entry
->address
2220 + input_section
->output_offset
2221 + input_section
->output_section
->vma
);
2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma
) (target
- from
) < 0)
2227 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2229 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2230 input_section
, output_bfd
, error_message
);
2233 static bfd_reloc_status_type
2234 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2235 void *data
, asection
*input_section
,
2236 bfd
*output_bfd
, char **error_message
)
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2241 if (output_bfd
!= NULL
)
2242 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2243 input_section
, output_bfd
, error_message
);
2245 /* Subtract the symbol section base address. */
2246 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2247 return bfd_reloc_continue
;
2250 static bfd_reloc_status_type
2251 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2252 void *data
, asection
*input_section
,
2253 bfd
*output_bfd
, char **error_message
)
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2258 if (output_bfd
!= NULL
)
2259 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2260 input_section
, output_bfd
, error_message
);
2262 /* Subtract the symbol section base address. */
2263 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry
->addend
+= 0x8000;
2267 return bfd_reloc_continue
;
2270 static bfd_reloc_status_type
2271 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2272 void *data
, asection
*input_section
,
2273 bfd
*output_bfd
, char **error_message
)
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2280 if (output_bfd
!= NULL
)
2281 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2282 input_section
, output_bfd
, error_message
);
2284 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2286 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2288 /* Subtract the TOC base address. */
2289 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2290 return bfd_reloc_continue
;
2293 static bfd_reloc_status_type
2294 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2295 void *data
, asection
*input_section
,
2296 bfd
*output_bfd
, char **error_message
)
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2303 if (output_bfd
!= NULL
)
2304 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2305 input_section
, output_bfd
, error_message
);
2307 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2309 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2311 /* Subtract the TOC base address. */
2312 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry
->addend
+= 0x8000;
2316 return bfd_reloc_continue
;
2319 static bfd_reloc_status_type
2320 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2321 void *data
, asection
*input_section
,
2322 bfd
*output_bfd
, char **error_message
)
2325 bfd_size_type octets
;
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2330 if (output_bfd
!= NULL
)
2331 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2332 input_section
, output_bfd
, error_message
);
2334 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2336 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2338 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2339 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2340 return bfd_reloc_ok
;
2343 static bfd_reloc_status_type
2344 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2345 void *data
, asection
*input_section
,
2346 bfd
*output_bfd
, char **error_message
)
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2351 if (output_bfd
!= NULL
)
2352 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2353 input_section
, output_bfd
, error_message
);
2355 if (error_message
!= NULL
)
2357 static char buf
[60];
2358 sprintf (buf
, "generic linker can't handle %s",
2359 reloc_entry
->howto
->name
);
2360 *error_message
= buf
;
2362 return bfd_reloc_dangerous
;
2365 struct ppc64_elf_obj_tdata
2367 struct elf_obj_tdata elf
;
2369 /* Shortcuts to dynamic linker sections. */
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection
*deleted_section
;
2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2380 bfd_signed_vma refcount
;
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela
*opd_relocs
;
2388 #define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2391 #define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2394 /* Override the generic function because we store some extras. */
2397 ppc64_elf_mkobject (bfd
*abfd
)
2399 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2400 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2401 if (abfd
->tdata
.any
== NULL
)
2406 /* Return 1 if target is one of ours. */
2409 is_ppc64_elf_target (const struct bfd_target
*targ
)
2411 extern const bfd_target bfd_elf64_powerpc_vec
;
2412 extern const bfd_target bfd_elf64_powerpcle_vec
;
2414 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2417 /* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2421 ppc64_elf_object_p (bfd
*abfd
)
2423 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2425 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2427 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd
->arch_info
= abfd
->arch_info
->next
;
2431 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2437 /* Support for core dump NOTE sections. */
2440 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2442 size_t offset
, size
;
2444 if (note
->descsz
!= 504)
2448 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2451 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2459 size
, note
->descpos
+ offset
);
2463 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2465 if (note
->descsz
!= 136)
2468 elf_tdata (abfd
)->core_program
2469 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2470 elf_tdata (abfd
)->core_command
2471 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2476 /* Merge backend specific data from an object file to the output
2477 object file when linking. */
2480 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2482 /* Check if we have the same endianess. */
2483 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2484 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2485 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2489 if (bfd_big_endian (ibfd
))
2490 msg
= _("%B: compiled for a big endian system "
2491 "and target is little endian");
2493 msg
= _("%B: compiled for a little endian system "
2494 "and target is big endian");
2496 (*_bfd_error_handler
) (msg
, ibfd
);
2498 bfd_set_error (bfd_error_wrong_format
);
2505 /* Add extra PPC sections. */
2507 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2509 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2510 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2511 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2513 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2514 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2515 { NULL
, 0, 0, 0, 0 }
2518 struct _ppc64_elf_section_data
2520 struct bfd_elf_section_data elf
;
2522 /* An array with one entry for each opd function descriptor. */
2525 /* Points to the function code section for local opd entries. */
2526 asection
**func_sec
;
2527 /* After editing .opd, adjust references to opd local syms. */
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2536 #define ppc64_elf_section_data(sec) \
2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2540 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2542 struct _ppc64_elf_section_data
*sdata
;
2543 bfd_size_type amt
= sizeof (*sdata
);
2545 sdata
= bfd_zalloc (abfd
, amt
);
2548 sec
->used_by_bfd
= sdata
;
2550 return _bfd_elf_new_section_hook (abfd
, sec
);
2554 get_opd_info (asection
* sec
)
2557 && ppc64_elf_section_data (sec
) != NULL
2558 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2559 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2563 /* Parameters for the qsort hook. */
2564 static asection
*synthetic_opd
;
2565 static bfd_boolean synthetic_relocatable
;
2567 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2570 compare_symbols (const void *ap
, const void *bp
)
2572 const asymbol
*a
= * (const asymbol
**) ap
;
2573 const asymbol
*b
= * (const asymbol
**) bp
;
2575 /* Section symbols first. */
2576 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2578 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2581 /* then .opd symbols. */
2582 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2584 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2587 /* then other code symbols. */
2588 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2589 == (SEC_CODE
| SEC_ALLOC
)
2590 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2591 != (SEC_CODE
| SEC_ALLOC
))
2594 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2595 != (SEC_CODE
| SEC_ALLOC
)
2596 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2597 == (SEC_CODE
| SEC_ALLOC
))
2600 if (synthetic_relocatable
)
2602 if (a
->section
->id
< b
->section
->id
)
2605 if (a
->section
->id
> b
->section
->id
)
2609 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2612 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2618 /* Search SYMS for a symbol of the given VALUE. */
2621 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2629 mid
= (lo
+ hi
) >> 1;
2630 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2632 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2642 mid
= (lo
+ hi
) >> 1;
2643 if (syms
[mid
]->section
->id
< id
)
2645 else if (syms
[mid
]->section
->id
> id
)
2647 else if (syms
[mid
]->value
< value
)
2649 else if (syms
[mid
]->value
> value
)
2658 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2662 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2663 long static_count
, asymbol
**static_syms
,
2664 long dyn_count
, asymbol
**dyn_syms
,
2671 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2673 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2678 opd
= bfd_get_section_by_name (abfd
, ".opd");
2682 symcount
= static_count
;
2684 symcount
+= dyn_count
;
2688 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2692 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2694 /* Use both symbol tables. */
2695 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2696 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2698 else if (!relocatable
&& static_count
== 0)
2699 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2701 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2703 synthetic_opd
= opd
;
2704 synthetic_relocatable
= relocatable
;
2705 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2707 if (!relocatable
&& symcount
> 1)
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2714 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2715 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2716 syms
[j
++] = syms
[i
];
2721 if (syms
[i
]->section
== opd
)
2725 for (; i
< symcount
; ++i
)
2726 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2727 != (SEC_CODE
| SEC_ALLOC
))
2728 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2732 for (; i
< symcount
; ++i
)
2733 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2737 for (; i
< symcount
; ++i
)
2738 if (syms
[i
]->section
!= opd
)
2742 for (; i
< symcount
; ++i
)
2743 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2744 != (SEC_CODE
| SEC_ALLOC
))
2749 if (opdsymend
== secsymend
)
2754 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2759 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2760 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2763 || ! (*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2767 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2771 while (r
< opd
->relocation
+ relcount
2772 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2775 if (r
== opd
->relocation
+ relcount
)
2778 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2781 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2784 sym
= *r
->sym_ptr_ptr
;
2785 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2786 sym
->section
->id
, sym
->value
+ r
->addend
))
2789 size
+= sizeof (asymbol
);
2790 size
+= strlen (syms
[i
]->name
) + 2;
2794 s
= *ret
= bfd_malloc (size
);
2801 names
= (char *) (s
+ count
);
2803 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2807 while (r
< opd
->relocation
+ relcount
2808 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2811 if (r
== opd
->relocation
+ relcount
)
2814 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2817 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2820 sym
= *r
->sym_ptr_ptr
;
2821 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2822 sym
->section
->id
, sym
->value
+ r
->addend
))
2827 s
->section
= sym
->section
;
2828 s
->value
= sym
->value
+ r
->addend
;
2831 len
= strlen (syms
[i
]->name
);
2832 memcpy (names
, syms
[i
]->name
, len
+ 1);
2843 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2847 free_contents_and_exit
:
2854 for (i
= secsymend
; i
< opdsymend
; ++i
)
2858 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2859 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2862 size
+= sizeof (asymbol
);
2863 size
+= strlen (syms
[i
]->name
) + 2;
2867 s
= *ret
= bfd_malloc (size
);
2871 goto free_contents_and_exit
;
2874 names
= (char *) (s
+ count
);
2876 for (i
= secsymend
; i
< opdsymend
; ++i
)
2880 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2881 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2885 asection
*sec
= abfd
->sections
;
2892 long mid
= (lo
+ hi
) >> 1;
2893 if (syms
[mid
]->section
->vma
< ent
)
2895 else if (syms
[mid
]->section
->vma
> ent
)
2899 sec
= syms
[mid
]->section
;
2904 if (lo
>= hi
&& lo
> codesecsym
)
2905 sec
= syms
[lo
- 1]->section
;
2907 for (; sec
!= NULL
; sec
= sec
->next
)
2911 if ((sec
->flags
& SEC_ALLOC
) == 0
2912 || (sec
->flags
& SEC_LOAD
) == 0)
2914 if ((sec
->flags
& SEC_CODE
) != 0)
2917 s
->value
= ent
- s
->section
->vma
;
2920 len
= strlen (syms
[i
]->name
);
2921 memcpy (names
, syms
[i
]->name
, len
+ 1);
2934 /* The following functions are specific to the ELF linker, while
2935 functions above are used generally. Those named ppc64_elf_* are
2936 called by the main ELF linker code. They appear in this file more
2937 or less in the order in which they are called. eg.
2938 ppc64_elf_check_relocs is called early in the link process,
2939 ppc64_elf_finish_dynamic_sections is one of the last functions
2942 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2943 functions have both a function code symbol and a function descriptor
2944 symbol. A call to foo in a relocatable object file looks like:
2951 The function definition in another object file might be:
2955 . .quad .TOC.@tocbase
2961 When the linker resolves the call during a static link, the branch
2962 unsurprisingly just goes to .foo and the .opd information is unused.
2963 If the function definition is in a shared library, things are a little
2964 different: The call goes via a plt call stub, the opd information gets
2965 copied to the plt, and the linker patches the nop.
2973 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2974 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2975 . std 2,40(1) # this is the general idea
2983 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2985 The "reloc ()" notation is supposed to indicate that the linker emits
2986 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2989 What are the difficulties here? Well, firstly, the relocations
2990 examined by the linker in check_relocs are against the function code
2991 sym .foo, while the dynamic relocation in the plt is emitted against
2992 the function descriptor symbol, foo. Somewhere along the line, we need
2993 to carefully copy dynamic link information from one symbol to the other.
2994 Secondly, the generic part of the elf linker will make .foo a dynamic
2995 symbol as is normal for most other backends. We need foo dynamic
2996 instead, at least for an application final link. However, when
2997 creating a shared library containing foo, we need to have both symbols
2998 dynamic so that references to .foo are satisfied during the early
2999 stages of linking. Otherwise the linker might decide to pull in a
3000 definition from some other object, eg. a static library.
3002 Update: As of August 2004, we support a new convention. Function
3003 calls may use the function descriptor symbol, ie. "bl foo". This
3004 behaves exactly as "bl .foo". */
3006 /* The linker needs to keep track of the number of relocs that it
3007 decides to copy as dynamic relocs in check_relocs for each symbol.
3008 This is so that it can later discard them if they are found to be
3009 unnecessary. We store the information in a field extending the
3010 regular ELF linker hash table. */
3012 struct ppc_dyn_relocs
3014 struct ppc_dyn_relocs
*next
;
3016 /* The input section of the reloc. */
3019 /* Total number of relocs copied for the input section. */
3020 bfd_size_type count
;
3022 /* Number of pc-relative relocs copied for the input section. */
3023 bfd_size_type pc_count
;
3026 /* Track GOT entries needed for a given symbol. We might need more
3027 than one got entry per symbol. */
3030 struct got_entry
*next
;
3032 /* The symbol addend that we'll be placing in the GOT. */
3035 /* Unlike other ELF targets, we use separate GOT entries for the same
3036 symbol referenced from different input files. This is to support
3037 automatic multiple TOC/GOT sections, where the TOC base can vary
3038 from one input file to another.
3040 Point to the BFD owning this GOT entry. */
3043 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3044 TLS_TPREL or TLS_DTPREL for tls entries. */
3047 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3050 bfd_signed_vma refcount
;
3055 /* The same for PLT. */
3058 struct plt_entry
*next
;
3064 bfd_signed_vma refcount
;
3069 /* Of those relocs that might be copied as dynamic relocs, this macro
3070 selects those that must be copied when linking a shared library,
3071 even when the symbol is local. */
3073 #define MUST_BE_DYN_RELOC(RTYPE) \
3074 ((RTYPE) != R_PPC64_REL32 \
3075 && (RTYPE) != R_PPC64_REL64 \
3076 && (RTYPE) != R_PPC64_REL30)
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3081 shared lib. With code that gcc generates, it's vital that this be
3082 enabled; In the PowerPC64 ABI, the address of a function is actually
3083 the address of a function descriptor, which resides in the .opd
3084 section. gcc uses the descriptor directly rather than going via the
3085 GOT as some other ABI's do, which means that initialized function
3086 pointers must reference the descriptor. Thus, a function pointer
3087 initialized to the address of a function in a shared library will
3088 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3089 redefines the function descriptor symbol to point to the copy. This
3090 presents a problem as a plt entry for that function is also
3091 initialized from the function descriptor symbol and the copy reloc
3092 may not be initialized first. */
3093 #define ELIMINATE_COPY_RELOCS 1
3095 /* Section name for stubs is the associated section name plus this
3097 #define STUB_SUFFIX ".stub"
3100 ppc_stub_long_branch:
3101 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3102 destination, but a 24 bit branch in a stub section will reach.
3105 ppc_stub_plt_branch:
3106 Similar to the above, but a 24 bit branch in the stub section won't
3107 reach its destination.
3108 . addis %r12,%r2,xxx@toc@ha
3109 . ld %r11,xxx@toc@l(%r12)
3114 Used to call a function in a shared library. If it so happens that
3115 the plt entry referenced crosses a 64k boundary, then an extra
3116 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3117 xxx+16 as appropriate.
3118 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx+0@toc@l(%r12)
3121 . ld %r2,xxx+8@toc@l(%r12)
3123 . ld %r11,xxx+16@toc@l(%r12)
3126 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3127 code to adjust the value and save r2 to support multiple toc sections.
3128 A ppc_stub_long_branch with an r2 offset looks like:
3130 . addis %r2,%r2,off@ha
3131 . addi %r2,%r2,off@l
3134 A ppc_stub_plt_branch with an r2 offset looks like:
3136 . addis %r12,%r2,xxx@toc@ha
3137 . ld %r11,xxx@toc@l(%r12)
3138 . addis %r2,%r2,off@ha
3139 . addi %r2,%r2,off@l
3144 enum ppc_stub_type
{
3146 ppc_stub_long_branch
,
3147 ppc_stub_long_branch_r2off
,
3148 ppc_stub_plt_branch
,
3149 ppc_stub_plt_branch_r2off
,
3153 struct ppc_stub_hash_entry
{
3155 /* Base hash table entry structure. */
3156 struct bfd_hash_entry root
;
3158 enum ppc_stub_type stub_type
;
3160 /* The stub section. */
3163 /* Offset within stub_sec of the beginning of this stub. */
3164 bfd_vma stub_offset
;
3166 /* Given the symbol's value and its section we can determine its final
3167 value when building the stubs (so the stub knows where to jump. */
3168 bfd_vma target_value
;
3169 asection
*target_section
;
3171 /* The symbol table entry, if any, that this was derived from. */
3172 struct ppc_link_hash_entry
*h
;
3174 /* And the reloc addend that this was derived from. */
3177 /* Where this stub is being called from, or, in the case of combined
3178 stub sections, the first input section in the group. */
3182 struct ppc_branch_hash_entry
{
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root
;
3187 /* Offset within .branch_lt. */
3188 unsigned int offset
;
3190 /* Generation marker. */
3194 struct ppc_link_hash_entry
3196 struct elf_link_hash_entry elf
;
3198 /* A pointer to the most recently used stub hash entry against this
3200 struct ppc_stub_hash_entry
*stub_cache
;
3202 /* Track dynamic relocs copied for this symbol. */
3203 struct ppc_dyn_relocs
*dyn_relocs
;
3205 /* Link between function code and descriptor symbols. */
3206 struct ppc_link_hash_entry
*oh
;
3208 /* Flag function code and descriptor symbols. */
3209 unsigned int is_func
:1;
3210 unsigned int is_func_descriptor
:1;
3212 /* Whether global opd/toc sym has been adjusted or not.
3213 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3214 should be set for all globals defined in any opd/toc section. */
3215 unsigned int adjust_done
:1;
3217 /* Set if we twiddled this symbol to weak at some stage. */
3218 unsigned int was_undefined
:1;
3220 /* Contexts in which symbol is used in the GOT (or TOC).
3221 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3222 corresponding relocs are encountered during check_relocs.
3223 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3224 indicate the corresponding GOT entry type is not needed.
3225 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3226 a TPREL one. We use a separate flag rather than setting TPREL
3227 just for convenience in distinguishing the two cases. */
3228 #define TLS_GD 1 /* GD reloc. */
3229 #define TLS_LD 2 /* LD reloc. */
3230 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3231 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3232 #define TLS_TLS 16 /* Any TLS reloc. */
3233 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3234 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3238 /* ppc64 ELF linker hash table. */
3240 struct ppc_link_hash_table
3242 struct elf_link_hash_table elf
;
3244 /* The stub hash table. */
3245 struct bfd_hash_table stub_hash_table
;
3247 /* Another hash table for plt_branch stubs. */
3248 struct bfd_hash_table branch_hash_table
;
3250 /* Linker stub bfd. */
3253 /* Linker call-backs. */
3254 asection
* (*add_stub_section
) (const char *, asection
*);
3255 void (*layout_sections_again
) (void);
3257 /* Array to keep track of which stub sections have been created, and
3258 information on stub grouping. */
3260 /* This is the section to which stubs in the group will be attached. */
3262 /* The stub section. */
3264 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3268 /* Temp used when calculating TOC pointers. */
3271 /* Highest input section id. */
3274 /* Highest output section index. */
3277 /* List of input sections for each output section. */
3278 asection
**input_list
;
3280 /* Short-cuts to get to dynamic linker sections. */
3291 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3292 struct ppc_link_hash_entry
*tls_get_addr
;
3293 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3296 unsigned long stub_count
[ppc_stub_plt_call
];
3298 /* Number of stubs against global syms. */
3299 unsigned long stub_globals
;
3301 /* Set if we should emit symbols for stubs. */
3302 unsigned int emit_stub_syms
:1;
3304 /* Support for multiple toc sections. */
3305 unsigned int no_multi_toc
:1;
3306 unsigned int multi_toc_needed
:1;
3309 unsigned int stub_error
:1;
3311 /* Flag set when small branches are detected. Used to
3312 select suitable defaults for the stub group size. */
3313 unsigned int has_14bit_branch
:1;
3315 /* Temp used by ppc64_elf_check_directives. */
3316 unsigned int twiddled_syms
:1;
3318 /* Incremented every time we size stubs. */
3319 unsigned int stub_iteration
;
3321 /* Small local sym to section mapping cache. */
3322 struct sym_sec_cache sym_sec
;
3325 /* Rename some of the generic section flags to better document how they
3327 #define has_toc_reloc has_gp_reloc
3328 #define makes_toc_func_call need_finalize_relax
3329 #define call_check_in_progress reloc_done
3331 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3333 #define ppc_hash_table(p) \
3334 ((struct ppc_link_hash_table *) ((p)->hash))
3336 #define ppc_stub_hash_lookup(table, string, create, copy) \
3337 ((struct ppc_stub_hash_entry *) \
3338 bfd_hash_lookup ((table), (string), (create), (copy)))
3340 #define ppc_branch_hash_lookup(table, string, create, copy) \
3341 ((struct ppc_branch_hash_entry *) \
3342 bfd_hash_lookup ((table), (string), (create), (copy)))
3344 /* Create an entry in the stub hash table. */
3346 static struct bfd_hash_entry
*
3347 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3348 struct bfd_hash_table
*table
,
3351 /* Allocate the structure if it has not already been allocated by a
3355 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3360 /* Call the allocation method of the superclass. */
3361 entry
= bfd_hash_newfunc (entry
, table
, string
);
3364 struct ppc_stub_hash_entry
*eh
;
3366 /* Initialize the local fields. */
3367 eh
= (struct ppc_stub_hash_entry
*) entry
;
3368 eh
->stub_type
= ppc_stub_none
;
3369 eh
->stub_sec
= NULL
;
3370 eh
->stub_offset
= 0;
3371 eh
->target_value
= 0;
3372 eh
->target_section
= NULL
;
3380 /* Create an entry in the branch hash table. */
3382 static struct bfd_hash_entry
*
3383 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3384 struct bfd_hash_table
*table
,
3387 /* Allocate the structure if it has not already been allocated by a
3391 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3396 /* Call the allocation method of the superclass. */
3397 entry
= bfd_hash_newfunc (entry
, table
, string
);
3400 struct ppc_branch_hash_entry
*eh
;
3402 /* Initialize the local fields. */
3403 eh
= (struct ppc_branch_hash_entry
*) entry
;
3411 /* Create an entry in a ppc64 ELF linker hash table. */
3413 static struct bfd_hash_entry
*
3414 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3415 struct bfd_hash_table
*table
,
3418 /* Allocate the structure if it has not already been allocated by a
3422 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3427 /* Call the allocation method of the superclass. */
3428 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3431 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3433 eh
->stub_cache
= NULL
;
3434 eh
->dyn_relocs
= NULL
;
3437 eh
->is_func_descriptor
= 0;
3438 eh
->adjust_done
= 0;
3439 eh
->was_undefined
= 0;
3446 /* Create a ppc64 ELF linker hash table. */
3448 static struct bfd_link_hash_table
*
3449 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3451 struct ppc_link_hash_table
*htab
;
3452 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3454 htab
= bfd_zmalloc (amt
);
3458 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3464 /* Init the stub hash table too. */
3465 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3468 /* And the branch hash table. */
3469 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3472 /* Initializing two fields of the union is just cosmetic. We really
3473 only care about glist, but when compiled on a 32-bit host the
3474 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3475 debugger inspection of these fields look nicer. */
3476 htab
->elf
.init_refcount
.refcount
= 0;
3477 htab
->elf
.init_refcount
.glist
= NULL
;
3478 htab
->elf
.init_offset
.offset
= 0;
3479 htab
->elf
.init_offset
.glist
= NULL
;
3481 return &htab
->elf
.root
;
3484 /* Free the derived linker hash table. */
3487 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3489 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3491 bfd_hash_table_free (&ret
->stub_hash_table
);
3492 bfd_hash_table_free (&ret
->branch_hash_table
);
3493 _bfd_generic_link_hash_table_free (hash
);
3496 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3499 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3501 struct ppc_link_hash_table
*htab
;
3503 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3505 /* Always hook our dynamic sections into the first bfd, which is the
3506 linker created stub bfd. This ensures that the GOT header is at
3507 the start of the output TOC section. */
3508 htab
= ppc_hash_table (info
);
3509 htab
->stub_bfd
= abfd
;
3510 htab
->elf
.dynobj
= abfd
;
3513 /* Build a name for an entry in the stub hash table. */
3516 ppc_stub_name (const asection
*input_section
,
3517 const asection
*sym_sec
,
3518 const struct ppc_link_hash_entry
*h
,
3519 const Elf_Internal_Rela
*rel
)
3524 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3525 offsets from a sym as a branch target? In fact, we could
3526 probably assume the addend is always zero. */
3527 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3531 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3532 stub_name
= bfd_malloc (len
);
3533 if (stub_name
!= NULL
)
3535 sprintf (stub_name
, "%08x.%s+%x",
3536 input_section
->id
& 0xffffffff,
3537 h
->elf
.root
.root
.string
,
3538 (int) rel
->r_addend
& 0xffffffff);
3543 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3544 stub_name
= bfd_malloc (len
);
3545 if (stub_name
!= NULL
)
3547 sprintf (stub_name
, "%08x.%x:%x+%x",
3548 input_section
->id
& 0xffffffff,
3549 sym_sec
->id
& 0xffffffff,
3550 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3551 (int) rel
->r_addend
& 0xffffffff);
3554 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3555 stub_name
[len
- 2] = 0;
3559 /* Look up an entry in the stub hash. Stub entries are cached because
3560 creating the stub name takes a bit of time. */
3562 static struct ppc_stub_hash_entry
*
3563 ppc_get_stub_entry (const asection
*input_section
,
3564 const asection
*sym_sec
,
3565 struct ppc_link_hash_entry
*h
,
3566 const Elf_Internal_Rela
*rel
,
3567 struct ppc_link_hash_table
*htab
)
3569 struct ppc_stub_hash_entry
*stub_entry
;
3570 const asection
*id_sec
;
3572 /* If this input section is part of a group of sections sharing one
3573 stub section, then use the id of the first section in the group.
3574 Stub names need to include a section id, as there may well be
3575 more than one stub used to reach say, printf, and we need to
3576 distinguish between them. */
3577 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3579 if (h
!= NULL
&& h
->stub_cache
!= NULL
3580 && h
->stub_cache
->h
== h
3581 && h
->stub_cache
->id_sec
== id_sec
)
3583 stub_entry
= h
->stub_cache
;
3589 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3590 if (stub_name
== NULL
)
3593 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3594 stub_name
, FALSE
, FALSE
);
3596 h
->stub_cache
= stub_entry
;
3604 /* Add a new stub entry to the stub hash. Not all fields of the new
3605 stub entry are initialised. */
3607 static struct ppc_stub_hash_entry
*
3608 ppc_add_stub (const char *stub_name
,
3610 struct ppc_link_hash_table
*htab
)
3614 struct ppc_stub_hash_entry
*stub_entry
;
3616 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3617 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3618 if (stub_sec
== NULL
)
3620 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3621 if (stub_sec
== NULL
)
3627 namelen
= strlen (link_sec
->name
);
3628 len
= namelen
+ sizeof (STUB_SUFFIX
);
3629 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3633 memcpy (s_name
, link_sec
->name
, namelen
);
3634 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3635 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3636 if (stub_sec
== NULL
)
3638 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3640 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3643 /* Enter this entry into the linker stub hash table. */
3644 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3646 if (stub_entry
== NULL
)
3648 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3649 section
->owner
, stub_name
);
3653 stub_entry
->stub_sec
= stub_sec
;
3654 stub_entry
->stub_offset
= 0;
3655 stub_entry
->id_sec
= link_sec
;
3659 /* Create sections for linker generated code. */
3662 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3664 struct ppc_link_hash_table
*htab
;
3667 htab
= ppc_hash_table (info
);
3669 /* Create .sfpr for code to save and restore fp regs. */
3670 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3671 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3672 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3673 if (htab
->sfpr
== NULL
3674 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3675 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3678 /* Create .glink for lazy dynamic linking support. */
3679 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3680 if (htab
->glink
== NULL
3681 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3682 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3685 /* Create .branch_lt for plt_branch stubs. */
3686 flags
= (SEC_ALLOC
| SEC_LOAD
3687 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3688 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3689 if (htab
->brlt
== NULL
3690 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3691 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3694 if (info
->shared
|| info
->emitrelocations
)
3696 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3697 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3698 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3700 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3701 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3707 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3708 not already done. */
3711 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3713 asection
*got
, *relgot
;
3715 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3719 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3722 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3727 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3728 | SEC_LINKER_CREATED
);
3730 got
= bfd_make_section (abfd
, ".got");
3732 || !bfd_set_section_flags (abfd
, got
, flags
)
3733 || !bfd_set_section_alignment (abfd
, got
, 3))
3736 relgot
= bfd_make_section (abfd
, ".rela.got");
3738 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3739 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3742 ppc64_elf_tdata (abfd
)->got
= got
;
3743 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3747 /* Create the dynamic sections, and set up shortcuts. */
3750 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3752 struct ppc_link_hash_table
*htab
;
3754 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3757 htab
= ppc_hash_table (info
);
3759 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3760 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3761 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3762 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3764 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3766 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3767 || (!info
->shared
&& !htab
->relbss
))
3773 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3776 ppc64_elf_copy_indirect_symbol
3777 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3778 struct elf_link_hash_entry
*dir
,
3779 struct elf_link_hash_entry
*ind
)
3781 struct ppc_link_hash_entry
*edir
, *eind
;
3783 edir
= (struct ppc_link_hash_entry
*) dir
;
3784 eind
= (struct ppc_link_hash_entry
*) ind
;
3786 /* Copy over any dynamic relocs we may have on the indirect sym. */
3787 if (eind
->dyn_relocs
!= NULL
)
3789 if (edir
->dyn_relocs
!= NULL
)
3791 struct ppc_dyn_relocs
**pp
;
3792 struct ppc_dyn_relocs
*p
;
3794 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3797 /* Add reloc counts against the weak sym to the strong sym
3798 list. Merge any entries against the same section. */
3799 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3801 struct ppc_dyn_relocs
*q
;
3803 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3804 if (q
->sec
== p
->sec
)
3806 q
->pc_count
+= p
->pc_count
;
3807 q
->count
+= p
->count
;
3814 *pp
= edir
->dyn_relocs
;
3817 edir
->dyn_relocs
= eind
->dyn_relocs
;
3818 eind
->dyn_relocs
= NULL
;
3821 edir
->is_func
|= eind
->is_func
;
3822 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3823 edir
->tls_mask
|= eind
->tls_mask
;
3825 /* If called to transfer flags for a weakdef during processing
3826 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3827 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3828 if (!(ELIMINATE_COPY_RELOCS
3829 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3830 && edir
->elf
.dynamic_adjusted
))
3831 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3833 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3834 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3835 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3836 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3838 /* If we were called to copy over info for a weak sym, that's all. */
3839 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3842 /* Copy over got entries that we may have already seen to the
3843 symbol which just became indirect. */
3844 if (eind
->elf
.got
.glist
!= NULL
)
3846 if (edir
->elf
.got
.glist
!= NULL
)
3848 struct got_entry
**entp
;
3849 struct got_entry
*ent
;
3851 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3853 struct got_entry
*dent
;
3855 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3856 if (dent
->addend
== ent
->addend
3857 && dent
->owner
== ent
->owner
3858 && dent
->tls_type
== ent
->tls_type
)
3860 dent
->got
.refcount
+= ent
->got
.refcount
;
3867 *entp
= edir
->elf
.got
.glist
;
3870 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3871 eind
->elf
.got
.glist
= NULL
;
3874 /* And plt entries. */
3875 if (eind
->elf
.plt
.plist
!= NULL
)
3877 if (edir
->elf
.plt
.plist
!= NULL
)
3879 struct plt_entry
**entp
;
3880 struct plt_entry
*ent
;
3882 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3884 struct plt_entry
*dent
;
3886 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3887 if (dent
->addend
== ent
->addend
)
3889 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3896 *entp
= edir
->elf
.plt
.plist
;
3899 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3900 eind
->elf
.plt
.plist
= NULL
;
3903 if (edir
->elf
.dynindx
== -1)
3905 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3906 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3907 eind
->elf
.dynindx
= -1;
3908 eind
->elf
.dynstr_index
= 0;
3911 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3914 /* Find the function descriptor hash entry from the given function code
3915 hash entry FH. Link the entries via their OH fields. */
3917 static struct ppc_link_hash_entry
*
3918 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3920 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3924 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3926 fdh
= (struct ppc_link_hash_entry
*)
3927 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3930 fdh
->is_func_descriptor
= 1;
3940 /* Make a fake function descriptor sym for the code sym FH. */
3942 static struct ppc_link_hash_entry
*
3943 make_fdh (struct bfd_link_info
*info
,
3944 struct ppc_link_hash_entry
*fh
,
3949 struct bfd_link_hash_entry
*bh
;
3950 struct ppc_link_hash_entry
*fdh
;
3952 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
3953 newsym
= bfd_make_empty_symbol (abfd
);
3954 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
3955 newsym
->section
= bfd_und_section_ptr
;
3957 newsym
->flags
= flags
;
3960 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
3961 newsym
->flags
, newsym
->section
,
3962 newsym
->value
, NULL
, FALSE
, FALSE
,
3966 fdh
= (struct ppc_link_hash_entry
*) bh
;
3967 fdh
->elf
.non_elf
= 0;
3971 /* Hacks to support old ABI code.
3972 When making function calls, old ABI code references function entry
3973 points (dot symbols), while new ABI code references the function
3974 descriptor symbol. We need to make any combination of reference and
3975 definition work together, without breaking archive linking.
3977 For a defined function "foo" and an undefined call to "bar":
3978 An old object defines "foo" and ".foo", references ".bar" (possibly
3980 A new object defines "foo" and references "bar".
3982 A new object thus has no problem with its undefined symbols being
3983 satisfied by definitions in an old object. On the other hand, the
3984 old object won't have ".bar" satisfied by a new object. */
3986 /* Fix function descriptor symbols defined in .opd sections to be
3990 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
3991 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3992 Elf_Internal_Sym
*isym
,
3993 const char **name ATTRIBUTE_UNUSED
,
3994 flagword
*flags ATTRIBUTE_UNUSED
,
3996 bfd_vma
*value ATTRIBUTE_UNUSED
)
3999 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4000 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4004 /* This function makes an old ABI object reference to ".bar" cause the
4005 inclusion of a new ABI object archive that defines "bar". */
4007 static struct elf_link_hash_entry
*
4008 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4009 struct bfd_link_info
*info
,
4012 struct elf_link_hash_entry
*h
;
4016 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4023 len
= strlen (name
);
4024 dot_name
= bfd_alloc (abfd
, len
+ 2);
4025 if (dot_name
== NULL
)
4026 return (struct elf_link_hash_entry
*) 0 - 1;
4028 memcpy (dot_name
+ 1, name
, len
+ 1);
4029 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4030 bfd_release (abfd
, dot_name
);
4034 /* This function satisfies all old ABI object references to ".bar" if a
4035 new ABI object defines "bar". Well, at least, undefined dot symbols
4036 are made weak. This stops later archive searches from including an
4037 object if we already have a function descriptor definition. It also
4038 prevents the linker complaining about undefined symbols.
4039 We also check and correct mismatched symbol visibility here. The
4040 most restrictive visibility of the function descriptor and the
4041 function entry symbol is used. */
4043 struct add_symbol_adjust_data
4045 struct bfd_link_info
*info
;
4050 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4052 struct add_symbol_adjust_data
*data
;
4053 struct ppc_link_hash_table
*htab
;
4054 struct ppc_link_hash_entry
*eh
;
4055 struct ppc_link_hash_entry
*fdh
;
4057 if (h
->root
.type
== bfd_link_hash_indirect
)
4060 if (h
->root
.type
== bfd_link_hash_warning
)
4061 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4063 if (h
->root
.root
.string
[0] != '.')
4067 htab
= ppc_hash_table (data
->info
);
4068 eh
= (struct ppc_link_hash_entry
*) h
;
4069 fdh
= get_fdh (eh
, htab
);
4071 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4072 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4073 && eh
->elf
.ref_regular
)
4075 /* Make an undefweak function descriptor sym, which is enough to
4076 pull in an --as-needed shared lib, but won't cause link
4077 errors. Archives are handled elsewhere. */
4078 fdh
= make_fdh (data
->info
, eh
, BSF_WEAK
);
4082 fdh
->elf
.ref_regular
= 1;
4084 else if (fdh
!= NULL
)
4086 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4087 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4088 if (entry_vis
< descr_vis
)
4089 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4090 else if (entry_vis
> descr_vis
)
4091 eh
->elf
.other
+= descr_vis
- entry_vis
;
4093 if (eh
->elf
.root
.type
== bfd_link_hash_undefined
4094 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
4095 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
))
4097 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4098 eh
->was_undefined
= 1;
4099 htab
->twiddled_syms
= 1;
4107 ppc64_elf_check_directives (bfd
*abfd ATTRIBUTE_UNUSED
,
4108 struct bfd_link_info
*info
)
4110 struct ppc_link_hash_table
*htab
;
4111 struct add_symbol_adjust_data data
;
4113 htab
= ppc_hash_table (info
);
4114 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4119 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, &data
);
4121 /* We need to fix the undefs list for any syms we have twiddled to
4123 if (htab
->twiddled_syms
)
4125 bfd_link_repair_undef_list (&htab
->elf
.root
);
4126 htab
->twiddled_syms
= 0;
4132 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4133 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4135 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4136 char *local_got_tls_masks
;
4138 if (local_got_ents
== NULL
)
4140 bfd_size_type size
= symtab_hdr
->sh_info
;
4142 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4143 local_got_ents
= bfd_zalloc (abfd
, size
);
4144 if (local_got_ents
== NULL
)
4146 elf_local_got_ents (abfd
) = local_got_ents
;
4149 if ((tls_type
& TLS_EXPLICIT
) == 0)
4151 struct got_entry
*ent
;
4153 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4154 if (ent
->addend
== r_addend
4155 && ent
->owner
== abfd
4156 && ent
->tls_type
== tls_type
)
4160 bfd_size_type amt
= sizeof (*ent
);
4161 ent
= bfd_alloc (abfd
, amt
);
4164 ent
->next
= local_got_ents
[r_symndx
];
4165 ent
->addend
= r_addend
;
4167 ent
->tls_type
= tls_type
;
4168 ent
->got
.refcount
= 0;
4169 local_got_ents
[r_symndx
] = ent
;
4171 ent
->got
.refcount
+= 1;
4174 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4175 local_got_tls_masks
[r_symndx
] |= tls_type
;
4180 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4182 struct plt_entry
*ent
;
4184 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4185 if (ent
->addend
== addend
)
4189 bfd_size_type amt
= sizeof (*ent
);
4190 ent
= bfd_alloc (abfd
, amt
);
4193 ent
->next
= eh
->elf
.plt
.plist
;
4194 ent
->addend
= addend
;
4195 ent
->plt
.refcount
= 0;
4196 eh
->elf
.plt
.plist
= ent
;
4198 ent
->plt
.refcount
+= 1;
4199 eh
->elf
.needs_plt
= 1;
4204 /* Look through the relocs for a section during the first phase, and
4205 calculate needed space in the global offset table, procedure
4206 linkage table, and dynamic reloc sections. */
4209 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4210 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4212 struct ppc_link_hash_table
*htab
;
4213 Elf_Internal_Shdr
*symtab_hdr
;
4214 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4215 const Elf_Internal_Rela
*rel
;
4216 const Elf_Internal_Rela
*rel_end
;
4218 asection
**opd_sym_map
;
4220 if (info
->relocatable
)
4223 /* Don't do anything special with non-loaded, non-alloced sections.
4224 In particular, any relocs in such sections should not affect GOT
4225 and PLT reference counting (ie. we don't allow them to create GOT
4226 or PLT entries), there's no possibility or desire to optimize TLS
4227 relocs, and there's not much point in propagating relocs to shared
4228 libs that the dynamic linker won't relocate. */
4229 if ((sec
->flags
& SEC_ALLOC
) == 0)
4232 htab
= ppc_hash_table (info
);
4233 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4235 sym_hashes
= elf_sym_hashes (abfd
);
4236 sym_hashes_end
= (sym_hashes
4237 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4238 - symtab_hdr
->sh_info
);
4242 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4244 /* Garbage collection needs some extra help with .opd sections.
4245 We don't want to necessarily keep everything referenced by
4246 relocs in .opd, as that would keep all functions. Instead,
4247 if we reference an .opd symbol (a function descriptor), we
4248 want to keep the function code symbol's section. This is
4249 easy for global symbols, but for local syms we need to keep
4250 information about the associated function section. Later, if
4251 edit_opd deletes entries, we'll use this array to adjust
4252 local syms in .opd. */
4254 asection
*func_section
;
4259 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4260 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4261 if (opd_sym_map
== NULL
)
4263 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4266 if (htab
->sfpr
== NULL
4267 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4270 rel_end
= relocs
+ sec
->reloc_count
;
4271 for (rel
= relocs
; rel
< rel_end
; rel
++)
4273 unsigned long r_symndx
;
4274 struct elf_link_hash_entry
*h
;
4275 enum elf_ppc64_reloc_type r_type
;
4278 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4279 if (r_symndx
< symtab_hdr
->sh_info
)
4282 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4284 r_type
= ELF64_R_TYPE (rel
->r_info
);
4287 case R_PPC64_GOT_TLSLD16
:
4288 case R_PPC64_GOT_TLSLD16_LO
:
4289 case R_PPC64_GOT_TLSLD16_HI
:
4290 case R_PPC64_GOT_TLSLD16_HA
:
4291 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4292 tls_type
= TLS_TLS
| TLS_LD
;
4295 case R_PPC64_GOT_TLSGD16
:
4296 case R_PPC64_GOT_TLSGD16_LO
:
4297 case R_PPC64_GOT_TLSGD16_HI
:
4298 case R_PPC64_GOT_TLSGD16_HA
:
4299 tls_type
= TLS_TLS
| TLS_GD
;
4302 case R_PPC64_GOT_TPREL16_DS
:
4303 case R_PPC64_GOT_TPREL16_LO_DS
:
4304 case R_PPC64_GOT_TPREL16_HI
:
4305 case R_PPC64_GOT_TPREL16_HA
:
4307 info
->flags
|= DF_STATIC_TLS
;
4308 tls_type
= TLS_TLS
| TLS_TPREL
;
4311 case R_PPC64_GOT_DTPREL16_DS
:
4312 case R_PPC64_GOT_DTPREL16_LO_DS
:
4313 case R_PPC64_GOT_DTPREL16_HI
:
4314 case R_PPC64_GOT_DTPREL16_HA
:
4315 tls_type
= TLS_TLS
| TLS_DTPREL
;
4317 sec
->has_tls_reloc
= 1;
4321 case R_PPC64_GOT16_DS
:
4322 case R_PPC64_GOT16_HA
:
4323 case R_PPC64_GOT16_HI
:
4324 case R_PPC64_GOT16_LO
:
4325 case R_PPC64_GOT16_LO_DS
:
4326 /* This symbol requires a global offset table entry. */
4327 sec
->has_toc_reloc
= 1;
4328 if (ppc64_elf_tdata (abfd
)->got
== NULL
4329 && !create_got_section (abfd
, info
))
4334 struct ppc_link_hash_entry
*eh
;
4335 struct got_entry
*ent
;
4337 eh
= (struct ppc_link_hash_entry
*) h
;
4338 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4339 if (ent
->addend
== rel
->r_addend
4340 && ent
->owner
== abfd
4341 && ent
->tls_type
== tls_type
)
4345 bfd_size_type amt
= sizeof (*ent
);
4346 ent
= bfd_alloc (abfd
, amt
);
4349 ent
->next
= eh
->elf
.got
.glist
;
4350 ent
->addend
= rel
->r_addend
;
4352 ent
->tls_type
= tls_type
;
4353 ent
->got
.refcount
= 0;
4354 eh
->elf
.got
.glist
= ent
;
4356 ent
->got
.refcount
+= 1;
4357 eh
->tls_mask
|= tls_type
;
4360 /* This is a global offset table entry for a local symbol. */
4361 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4362 rel
->r_addend
, tls_type
))
4366 case R_PPC64_PLT16_HA
:
4367 case R_PPC64_PLT16_HI
:
4368 case R_PPC64_PLT16_LO
:
4371 /* This symbol requires a procedure linkage table entry. We
4372 actually build the entry in adjust_dynamic_symbol,
4373 because this might be a case of linking PIC code without
4374 linking in any dynamic objects, in which case we don't
4375 need to generate a procedure linkage table after all. */
4378 /* It does not make sense to have a procedure linkage
4379 table entry for a local symbol. */
4380 bfd_set_error (bfd_error_bad_value
);
4384 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4389 /* The following relocations don't need to propagate the
4390 relocation if linking a shared object since they are
4391 section relative. */
4392 case R_PPC64_SECTOFF
:
4393 case R_PPC64_SECTOFF_LO
:
4394 case R_PPC64_SECTOFF_HI
:
4395 case R_PPC64_SECTOFF_HA
:
4396 case R_PPC64_SECTOFF_DS
:
4397 case R_PPC64_SECTOFF_LO_DS
:
4398 case R_PPC64_DTPREL16
:
4399 case R_PPC64_DTPREL16_LO
:
4400 case R_PPC64_DTPREL16_HI
:
4401 case R_PPC64_DTPREL16_HA
:
4402 case R_PPC64_DTPREL16_DS
:
4403 case R_PPC64_DTPREL16_LO_DS
:
4404 case R_PPC64_DTPREL16_HIGHER
:
4405 case R_PPC64_DTPREL16_HIGHERA
:
4406 case R_PPC64_DTPREL16_HIGHEST
:
4407 case R_PPC64_DTPREL16_HIGHESTA
:
4412 case R_PPC64_TOC16_LO
:
4413 case R_PPC64_TOC16_HI
:
4414 case R_PPC64_TOC16_HA
:
4415 case R_PPC64_TOC16_DS
:
4416 case R_PPC64_TOC16_LO_DS
:
4417 sec
->has_toc_reloc
= 1;
4420 /* This relocation describes the C++ object vtable hierarchy.
4421 Reconstruct it for later use during GC. */
4422 case R_PPC64_GNU_VTINHERIT
:
4423 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4427 /* This relocation describes which C++ vtable entries are actually
4428 used. Record for later use during GC. */
4429 case R_PPC64_GNU_VTENTRY
:
4430 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4435 case R_PPC64_REL14_BRTAKEN
:
4436 case R_PPC64_REL14_BRNTAKEN
:
4437 htab
->has_14bit_branch
= 1;
4443 /* We may need a .plt entry if the function this reloc
4444 refers to is in a shared lib. */
4445 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4448 if (h
== &htab
->tls_get_addr
->elf
4449 || h
== &htab
->tls_get_addr_fd
->elf
)
4450 sec
->has_tls_reloc
= 1;
4451 else if (htab
->tls_get_addr
== NULL
4452 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4453 && (h
->root
.root
.string
[15] == 0
4454 || h
->root
.root
.string
[15] == '@'))
4456 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4457 sec
->has_tls_reloc
= 1;
4459 else if (htab
->tls_get_addr_fd
== NULL
4460 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4461 && (h
->root
.root
.string
[14] == 0
4462 || h
->root
.root
.string
[14] == '@'))
4464 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4465 sec
->has_tls_reloc
= 1;
4470 case R_PPC64_TPREL64
:
4471 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4473 info
->flags
|= DF_STATIC_TLS
;
4476 case R_PPC64_DTPMOD64
:
4477 if (rel
+ 1 < rel_end
4478 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4479 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4480 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4482 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4485 case R_PPC64_DTPREL64
:
4486 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4488 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4489 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4490 /* This is the second reloc of a dtpmod, dtprel pair.
4491 Don't mark with TLS_DTPREL. */
4495 sec
->has_tls_reloc
= 1;
4498 struct ppc_link_hash_entry
*eh
;
4499 eh
= (struct ppc_link_hash_entry
*) h
;
4500 eh
->tls_mask
|= tls_type
;
4503 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4504 rel
->r_addend
, tls_type
))
4507 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4509 /* One extra to simplify get_tls_mask. */
4510 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4511 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4512 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4515 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4516 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4518 /* Mark the second slot of a GD or LD entry.
4519 -1 to indicate GD and -2 to indicate LD. */
4520 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4521 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4522 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4523 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4526 case R_PPC64_TPREL16
:
4527 case R_PPC64_TPREL16_LO
:
4528 case R_PPC64_TPREL16_HI
:
4529 case R_PPC64_TPREL16_HA
:
4530 case R_PPC64_TPREL16_DS
:
4531 case R_PPC64_TPREL16_LO_DS
:
4532 case R_PPC64_TPREL16_HIGHER
:
4533 case R_PPC64_TPREL16_HIGHERA
:
4534 case R_PPC64_TPREL16_HIGHEST
:
4535 case R_PPC64_TPREL16_HIGHESTA
:
4538 info
->flags
|= DF_STATIC_TLS
;
4543 case R_PPC64_ADDR64
:
4544 if (opd_sym_map
!= NULL
4545 && rel
+ 1 < rel_end
4546 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4550 if (h
->root
.root
.string
[0] == '.'
4551 && h
->root
.root
.string
[1] != 0
4552 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4555 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4561 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4566 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4574 case R_PPC64_ADDR14
:
4575 case R_PPC64_ADDR14_BRNTAKEN
:
4576 case R_PPC64_ADDR14_BRTAKEN
:
4577 case R_PPC64_ADDR16
:
4578 case R_PPC64_ADDR16_DS
:
4579 case R_PPC64_ADDR16_HA
:
4580 case R_PPC64_ADDR16_HI
:
4581 case R_PPC64_ADDR16_HIGHER
:
4582 case R_PPC64_ADDR16_HIGHERA
:
4583 case R_PPC64_ADDR16_HIGHEST
:
4584 case R_PPC64_ADDR16_HIGHESTA
:
4585 case R_PPC64_ADDR16_LO
:
4586 case R_PPC64_ADDR16_LO_DS
:
4587 case R_PPC64_ADDR24
:
4588 case R_PPC64_ADDR32
:
4589 case R_PPC64_UADDR16
:
4590 case R_PPC64_UADDR32
:
4591 case R_PPC64_UADDR64
:
4593 if (h
!= NULL
&& !info
->shared
)
4594 /* We may need a copy reloc. */
4597 /* Don't propagate .opd relocs. */
4598 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4601 /* If we are creating a shared library, and this is a reloc
4602 against a global symbol, or a non PC relative reloc
4603 against a local symbol, then we need to copy the reloc
4604 into the shared library. However, if we are linking with
4605 -Bsymbolic, we do not need to copy a reloc against a
4606 global symbol which is defined in an object we are
4607 including in the link (i.e., DEF_REGULAR is set). At
4608 this point we have not seen all the input files, so it is
4609 possible that DEF_REGULAR is not set now but will be set
4610 later (it is never cleared). In case of a weak definition,
4611 DEF_REGULAR may be cleared later by a strong definition in
4612 a shared library. We account for that possibility below by
4613 storing information in the dyn_relocs field of the hash
4614 table entry. A similar situation occurs when creating
4615 shared libraries and symbol visibility changes render the
4618 If on the other hand, we are creating an executable, we
4619 may need to keep relocations for symbols satisfied by a
4620 dynamic library if we manage to avoid copy relocs for the
4624 && (MUST_BE_DYN_RELOC (r_type
)
4626 && (! info
->symbolic
4627 || h
->root
.type
== bfd_link_hash_defweak
4628 || !h
->def_regular
))))
4629 || (ELIMINATE_COPY_RELOCS
4632 && (h
->root
.type
== bfd_link_hash_defweak
4633 || !h
->def_regular
)))
4635 struct ppc_dyn_relocs
*p
;
4636 struct ppc_dyn_relocs
**head
;
4638 /* We must copy these reloc types into the output file.
4639 Create a reloc section in dynobj and make room for
4646 name
= (bfd_elf_string_from_elf_section
4648 elf_elfheader (abfd
)->e_shstrndx
,
4649 elf_section_data (sec
)->rel_hdr
.sh_name
));
4653 if (strncmp (name
, ".rela", 5) != 0
4654 || strcmp (bfd_get_section_name (abfd
, sec
),
4657 (*_bfd_error_handler
)
4658 (_("%B: bad relocation section name `%s\'"),
4660 bfd_set_error (bfd_error_bad_value
);
4663 dynobj
= htab
->elf
.dynobj
;
4664 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4669 sreloc
= bfd_make_section (dynobj
, name
);
4670 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4671 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4672 if ((sec
->flags
& SEC_ALLOC
) != 0)
4673 flags
|= SEC_ALLOC
| SEC_LOAD
;
4675 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
4676 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4679 elf_section_data (sec
)->sreloc
= sreloc
;
4682 /* If this is a global symbol, we count the number of
4683 relocations we need for this symbol. */
4686 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4690 /* Track dynamic relocs needed for local syms too.
4691 We really need local syms available to do this
4695 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4700 head
= ((struct ppc_dyn_relocs
**)
4701 &elf_section_data (s
)->local_dynrel
);
4705 if (p
== NULL
|| p
->sec
!= sec
)
4707 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4718 if (!MUST_BE_DYN_RELOC (r_type
))
4731 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4732 of the code entry point, and its section. */
4735 opd_entry_value (asection
*opd_sec
,
4737 asection
**code_sec
,
4740 bfd
*opd_bfd
= opd_sec
->owner
;
4741 Elf_Internal_Rela
*relocs
;
4742 Elf_Internal_Rela
*lo
, *hi
, *look
;
4745 /* No relocs implies we are linking a --just-symbols object. */
4746 if (opd_sec
->reloc_count
== 0)
4750 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4751 return (bfd_vma
) -1;
4753 if (code_sec
!= NULL
)
4755 asection
*sec
, *likely
= NULL
;
4756 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4758 && (sec
->flags
& SEC_LOAD
) != 0
4759 && (sec
->flags
& SEC_ALLOC
) != 0)
4764 if (code_off
!= NULL
)
4765 *code_off
= val
- likely
->vma
;
4771 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4773 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4775 /* Go find the opd reloc at the sym address. */
4777 BFD_ASSERT (lo
!= NULL
);
4778 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4782 look
= lo
+ (hi
- lo
) / 2;
4783 if (look
->r_offset
< offset
)
4785 else if (look
->r_offset
> offset
)
4789 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4790 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4791 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4793 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4796 if (symndx
< symtab_hdr
->sh_info
)
4798 Elf_Internal_Sym
*sym
;
4800 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4803 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4804 symtab_hdr
->sh_info
,
4805 0, NULL
, NULL
, NULL
);
4808 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4812 val
= sym
->st_value
;
4814 if ((sym
->st_shndx
!= SHN_UNDEF
4815 && sym
->st_shndx
< SHN_LORESERVE
)
4816 || sym
->st_shndx
> SHN_HIRESERVE
)
4817 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4818 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4822 struct elf_link_hash_entry
**sym_hashes
;
4823 struct elf_link_hash_entry
*rh
;
4825 sym_hashes
= elf_sym_hashes (opd_bfd
);
4826 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4827 while (rh
->root
.type
== bfd_link_hash_indirect
4828 || rh
->root
.type
== bfd_link_hash_warning
)
4829 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4830 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4831 || rh
->root
.type
== bfd_link_hash_defweak
);
4832 val
= rh
->root
.u
.def
.value
;
4833 sec
= rh
->root
.u
.def
.section
;
4835 val
+= look
->r_addend
;
4836 if (code_off
!= NULL
)
4838 if (code_sec
!= NULL
)
4840 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4841 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4850 /* Return the section that should be marked against GC for a given
4854 ppc64_elf_gc_mark_hook (asection
*sec
,
4855 struct bfd_link_info
*info
,
4856 Elf_Internal_Rela
*rel
,
4857 struct elf_link_hash_entry
*h
,
4858 Elf_Internal_Sym
*sym
)
4862 /* First mark all our entry sym sections. */
4863 if (info
->gc_sym_list
!= NULL
)
4865 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4866 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4868 info
->gc_sym_list
= NULL
;
4871 struct ppc_link_hash_entry
*eh
;
4873 eh
= (struct ppc_link_hash_entry
*)
4874 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4877 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4878 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4881 if (eh
->is_func_descriptor
)
4882 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4883 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4884 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4885 eh
->elf
.root
.u
.def
.value
,
4886 &rsec
, NULL
) != (bfd_vma
) -1)
4892 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4894 rsec
= eh
->elf
.root
.u
.def
.section
;
4896 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4900 while (sym
!= NULL
);
4903 /* Syms return NULL if we're marking .opd, so we avoid marking all
4904 function sections, as all functions are referenced in .opd. */
4906 if (get_opd_info (sec
) != NULL
)
4911 enum elf_ppc64_reloc_type r_type
;
4912 struct ppc_link_hash_entry
*eh
;
4914 r_type
= ELF64_R_TYPE (rel
->r_info
);
4917 case R_PPC64_GNU_VTINHERIT
:
4918 case R_PPC64_GNU_VTENTRY
:
4922 switch (h
->root
.type
)
4924 case bfd_link_hash_defined
:
4925 case bfd_link_hash_defweak
:
4926 eh
= (struct ppc_link_hash_entry
*) h
;
4927 if (eh
->oh
!= NULL
&& eh
->oh
->is_func_descriptor
)
4930 /* Function descriptor syms cause the associated
4931 function code sym section to be marked. */
4932 if (eh
->is_func_descriptor
)
4934 /* They also mark their opd section. */
4935 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4936 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4937 ppc64_elf_gc_mark_hook
);
4939 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4941 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4942 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4943 eh
->elf
.root
.u
.def
.value
,
4944 &rsec
, NULL
) != (bfd_vma
) -1)
4946 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4947 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4948 ppc64_elf_gc_mark_hook
);
4951 rsec
= h
->root
.u
.def
.section
;
4954 case bfd_link_hash_common
:
4955 rsec
= h
->root
.u
.c
.p
->section
;
4965 asection
**opd_sym_section
;
4967 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4968 opd_sym_section
= get_opd_info (rsec
);
4969 if (opd_sym_section
!= NULL
)
4972 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4974 rsec
= opd_sym_section
[sym
->st_value
/ 8];
4981 /* Update the .got, .plt. and dynamic reloc reference counts for the
4982 section being removed. */
4985 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4986 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4988 struct ppc_link_hash_table
*htab
;
4989 Elf_Internal_Shdr
*symtab_hdr
;
4990 struct elf_link_hash_entry
**sym_hashes
;
4991 struct got_entry
**local_got_ents
;
4992 const Elf_Internal_Rela
*rel
, *relend
;
4994 if ((sec
->flags
& SEC_ALLOC
) == 0)
4997 elf_section_data (sec
)->local_dynrel
= NULL
;
4999 htab
= ppc_hash_table (info
);
5000 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5001 sym_hashes
= elf_sym_hashes (abfd
);
5002 local_got_ents
= elf_local_got_ents (abfd
);
5004 relend
= relocs
+ sec
->reloc_count
;
5005 for (rel
= relocs
; rel
< relend
; rel
++)
5007 unsigned long r_symndx
;
5008 enum elf_ppc64_reloc_type r_type
;
5009 struct elf_link_hash_entry
*h
= NULL
;
5012 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5013 r_type
= ELF64_R_TYPE (rel
->r_info
);
5014 if (r_symndx
>= symtab_hdr
->sh_info
)
5016 struct ppc_link_hash_entry
*eh
;
5017 struct ppc_dyn_relocs
**pp
;
5018 struct ppc_dyn_relocs
*p
;
5020 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5021 while (h
->root
.type
== bfd_link_hash_indirect
5022 || h
->root
.type
== bfd_link_hash_warning
)
5023 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5024 eh
= (struct ppc_link_hash_entry
*) h
;
5026 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5029 /* Everything must go for SEC. */
5037 case R_PPC64_GOT_TLSLD16
:
5038 case R_PPC64_GOT_TLSLD16_LO
:
5039 case R_PPC64_GOT_TLSLD16_HI
:
5040 case R_PPC64_GOT_TLSLD16_HA
:
5041 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5042 tls_type
= TLS_TLS
| TLS_LD
;
5045 case R_PPC64_GOT_TLSGD16
:
5046 case R_PPC64_GOT_TLSGD16_LO
:
5047 case R_PPC64_GOT_TLSGD16_HI
:
5048 case R_PPC64_GOT_TLSGD16_HA
:
5049 tls_type
= TLS_TLS
| TLS_GD
;
5052 case R_PPC64_GOT_TPREL16_DS
:
5053 case R_PPC64_GOT_TPREL16_LO_DS
:
5054 case R_PPC64_GOT_TPREL16_HI
:
5055 case R_PPC64_GOT_TPREL16_HA
:
5056 tls_type
= TLS_TLS
| TLS_TPREL
;
5059 case R_PPC64_GOT_DTPREL16_DS
:
5060 case R_PPC64_GOT_DTPREL16_LO_DS
:
5061 case R_PPC64_GOT_DTPREL16_HI
:
5062 case R_PPC64_GOT_DTPREL16_HA
:
5063 tls_type
= TLS_TLS
| TLS_DTPREL
;
5067 case R_PPC64_GOT16_DS
:
5068 case R_PPC64_GOT16_HA
:
5069 case R_PPC64_GOT16_HI
:
5070 case R_PPC64_GOT16_LO
:
5071 case R_PPC64_GOT16_LO_DS
:
5074 struct got_entry
*ent
;
5079 ent
= local_got_ents
[r_symndx
];
5081 for (; ent
!= NULL
; ent
= ent
->next
)
5082 if (ent
->addend
== rel
->r_addend
5083 && ent
->owner
== abfd
5084 && ent
->tls_type
== tls_type
)
5088 if (ent
->got
.refcount
> 0)
5089 ent
->got
.refcount
-= 1;
5093 case R_PPC64_PLT16_HA
:
5094 case R_PPC64_PLT16_HI
:
5095 case R_PPC64_PLT16_LO
:
5099 case R_PPC64_REL14_BRNTAKEN
:
5100 case R_PPC64_REL14_BRTAKEN
:
5104 struct plt_entry
*ent
;
5106 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5107 if (ent
->addend
== rel
->r_addend
)
5111 if (ent
->plt
.refcount
> 0)
5112 ent
->plt
.refcount
-= 1;
5123 /* The maximum size of .sfpr. */
5124 #define SFPR_MAX (218*4)
5126 struct sfpr_def_parms
5128 const char name
[12];
5129 unsigned char lo
, hi
;
5130 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5131 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5134 /* Auto-generate _save*, _rest* functions in .sfpr. */
5137 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5139 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5141 size_t len
= strlen (parm
->name
);
5142 bfd_boolean writing
= FALSE
;
5145 memcpy (sym
, parm
->name
, len
);
5148 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5150 struct elf_link_hash_entry
*h
;
5152 sym
[len
+ 0] = i
/ 10 + '0';
5153 sym
[len
+ 1] = i
% 10 + '0';
5154 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5158 h
->root
.type
= bfd_link_hash_defined
;
5159 h
->root
.u
.def
.section
= htab
->sfpr
;
5160 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5163 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5165 if (htab
->sfpr
->contents
== NULL
)
5167 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5168 if (htab
->sfpr
->contents
== NULL
)
5174 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5176 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5178 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5179 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5187 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5189 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5194 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5196 p
= savegpr0 (abfd
, p
, r
);
5197 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5199 bfd_put_32 (abfd
, BLR
, p
);
5204 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5206 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5211 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5213 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5215 p
= restgpr0 (abfd
, p
, r
);
5216 bfd_put_32 (abfd
, MTLR_R0
, p
);
5220 p
= restgpr0 (abfd
, p
, 30);
5221 p
= restgpr0 (abfd
, p
, 31);
5223 bfd_put_32 (abfd
, BLR
, p
);
5228 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5230 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5235 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5237 p
= savegpr1 (abfd
, p
, r
);
5238 bfd_put_32 (abfd
, BLR
, p
);
5243 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5245 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5250 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5252 p
= restgpr1 (abfd
, p
, r
);
5253 bfd_put_32 (abfd
, BLR
, p
);
5258 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5260 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5265 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5267 p
= savefpr (abfd
, p
, r
);
5268 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5270 bfd_put_32 (abfd
, BLR
, p
);
5275 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5277 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5282 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5284 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5286 p
= restfpr (abfd
, p
, r
);
5287 bfd_put_32 (abfd
, MTLR_R0
, p
);
5291 p
= restfpr (abfd
, p
, 30);
5292 p
= restfpr (abfd
, p
, 31);
5294 bfd_put_32 (abfd
, BLR
, p
);
5299 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5301 p
= savefpr (abfd
, p
, r
);
5302 bfd_put_32 (abfd
, BLR
, p
);
5307 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5309 p
= restfpr (abfd
, p
, r
);
5310 bfd_put_32 (abfd
, BLR
, p
);
5315 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5317 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5319 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5324 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5326 p
= savevr (abfd
, p
, r
);
5327 bfd_put_32 (abfd
, BLR
, p
);
5332 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5334 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5336 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5341 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5343 p
= restvr (abfd
, p
, r
);
5344 bfd_put_32 (abfd
, BLR
, p
);
5348 /* Called via elf_link_hash_traverse to transfer dynamic linking
5349 information on function code symbol entries to their corresponding
5350 function descriptor symbol entries. */
5353 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5355 struct bfd_link_info
*info
;
5356 struct ppc_link_hash_table
*htab
;
5357 struct plt_entry
*ent
;
5358 struct ppc_link_hash_entry
*fh
;
5359 struct ppc_link_hash_entry
*fdh
;
5360 bfd_boolean force_local
;
5362 fh
= (struct ppc_link_hash_entry
*) h
;
5363 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5366 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5367 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5370 htab
= ppc_hash_table (info
);
5372 /* Resolve undefined references to dot-symbols as the value
5373 in the function descriptor, if we have one in a regular object.
5374 This is to satisfy cases like ".quad .foo". Calls to functions
5375 in dynamic objects are handled elsewhere. */
5376 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5377 && fh
->was_undefined
5378 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5379 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5380 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5381 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5382 fh
->oh
->elf
.root
.u
.def
.value
,
5383 &fh
->elf
.root
.u
.def
.section
,
5384 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5386 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5387 fh
->elf
.forced_local
= 1;
5390 /* If this is a function code symbol, transfer dynamic linking
5391 information to the function descriptor symbol. */
5395 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5396 if (ent
->plt
.refcount
> 0)
5399 || fh
->elf
.root
.root
.string
[0] != '.'
5400 || fh
->elf
.root
.root
.string
[1] == '\0')
5403 /* Find the corresponding function descriptor symbol. Create it
5404 as undefined if necessary. */
5406 fdh
= get_fdh (fh
, htab
);
5408 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5409 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5410 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5414 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5415 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5418 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5420 fdh
= make_fdh (info
, fh
, flags
);
5426 && !fdh
->elf
.forced_local
5428 || fdh
->elf
.def_dynamic
5429 || fdh
->elf
.ref_dynamic
5430 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5431 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5433 if (fdh
->elf
.dynindx
== -1)
5434 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5436 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5437 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5438 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5439 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5440 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5442 struct plt_entry
**ep
= &fdh
->elf
.plt
.plist
;
5445 *ep
= fh
->elf
.plt
.plist
;
5446 fh
->elf
.plt
.plist
= NULL
;
5447 fdh
->elf
.needs_plt
= 1;
5449 fdh
->is_func_descriptor
= 1;
5454 /* Now that the info is on the function descriptor, clear the
5455 function code sym info. Any function code syms for which we
5456 don't have a definition in a regular file, we force local.
5457 This prevents a shared library from exporting syms that have
5458 been imported from another library. Function code syms that
5459 are really in the library we must leave global to prevent the
5460 linker dragging in a definition from a static library. */
5463 && (!fh
->elf
.def_regular
5465 || !fdh
->elf
.def_regular
5466 || fdh
->elf
.forced_local
));
5467 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5472 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5473 this hook to a) provide some gcc support functions, and b) transfer
5474 dynamic linking information gathered so far on function code symbol
5475 entries, to their corresponding function descriptor symbol entries. */
5478 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5479 struct bfd_link_info
*info
)
5481 struct ppc_link_hash_table
*htab
;
5483 const struct sfpr_def_parms funcs
[] =
5485 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5486 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5487 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5488 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5489 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5490 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5491 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5492 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5493 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5494 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5495 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5496 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5499 htab
= ppc_hash_table (info
);
5500 if (htab
->sfpr
== NULL
)
5501 /* We don't have any relocs. */
5504 /* Provide any missing _save* and _rest* functions. */
5505 htab
->sfpr
->size
= 0;
5506 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5507 if (!sfpr_define (info
, &funcs
[i
]))
5510 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5512 if (htab
->sfpr
->size
== 0)
5513 _bfd_strip_section_from_output (info
, htab
->sfpr
);
5518 /* Adjust a symbol defined by a dynamic object and referenced by a
5519 regular object. The current definition is in some section of the
5520 dynamic object, but we're not including those sections. We have to
5521 change the definition to something the rest of the link can
5525 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5526 struct elf_link_hash_entry
*h
)
5528 struct ppc_link_hash_table
*htab
;
5530 unsigned int power_of_two
;
5532 htab
= ppc_hash_table (info
);
5534 /* Deal with function syms. */
5535 if (h
->type
== STT_FUNC
5538 /* Clear procedure linkage table information for any symbol that
5539 won't need a .plt entry. */
5540 struct plt_entry
*ent
;
5541 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5542 if (ent
->plt
.refcount
> 0)
5545 || SYMBOL_CALLS_LOCAL (info
, h
)
5546 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5547 && h
->root
.type
== bfd_link_hash_undefweak
))
5549 h
->plt
.plist
= NULL
;
5554 h
->plt
.plist
= NULL
;
5556 /* If this is a weak symbol, and there is a real definition, the
5557 processor independent code will have arranged for us to see the
5558 real definition first, and we can just use the same value. */
5559 if (h
->u
.weakdef
!= NULL
)
5561 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5562 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5563 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5564 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5565 if (ELIMINATE_COPY_RELOCS
)
5566 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5570 /* If we are creating a shared library, we must presume that the
5571 only references to the symbol are via the global offset table.
5572 For such cases we need not do anything here; the relocations will
5573 be handled correctly by relocate_section. */
5577 /* If there are no references to this symbol that do not use the
5578 GOT, we don't need to generate a copy reloc. */
5579 if (!h
->non_got_ref
)
5582 if (ELIMINATE_COPY_RELOCS
)
5584 struct ppc_link_hash_entry
* eh
;
5585 struct ppc_dyn_relocs
*p
;
5587 eh
= (struct ppc_link_hash_entry
*) h
;
5588 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5590 s
= p
->sec
->output_section
;
5591 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5595 /* If we didn't find any dynamic relocs in read-only sections, then
5596 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5604 if (h
->plt
.plist
!= NULL
)
5606 /* We should never get here, but unfortunately there are versions
5607 of gcc out there that improperly (for this ABI) put initialized
5608 function pointers, vtable refs and suchlike in read-only
5609 sections. Allow them to proceed, but warn that this might
5610 break at runtime. */
5611 (*_bfd_error_handler
)
5612 (_("copy reloc against `%s' requires lazy plt linking; "
5613 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5614 h
->root
.root
.string
);
5617 /* This is a reference to a symbol defined by a dynamic object which
5618 is not a function. */
5620 /* We must allocate the symbol in our .dynbss section, which will
5621 become part of the .bss section of the executable. There will be
5622 an entry for this symbol in the .dynsym section. The dynamic
5623 object will contain position independent code, so all references
5624 from the dynamic object to this symbol will go through the global
5625 offset table. The dynamic linker will use the .dynsym entry to
5626 determine the address it must put in the global offset table, so
5627 both the dynamic object and the regular object will refer to the
5628 same memory location for the variable. */
5630 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5631 to copy the initial value out of the dynamic object and into the
5632 runtime process image. We need to remember the offset into the
5633 .rela.bss section we are going to use. */
5634 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5636 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5640 /* We need to figure out the alignment required for this symbol. I
5641 have no idea how ELF linkers handle this. */
5642 power_of_two
= bfd_log2 (h
->size
);
5643 if (power_of_two
> 4)
5646 /* Apply the required alignment. */
5648 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5649 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5651 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5655 /* Define the symbol as being at this point in the section. */
5656 h
->root
.u
.def
.section
= s
;
5657 h
->root
.u
.def
.value
= s
->size
;
5659 /* Increment the section size to make room for the symbol. */
5665 /* If given a function descriptor symbol, hide both the function code
5666 sym and the descriptor. */
5668 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5669 struct elf_link_hash_entry
*h
,
5670 bfd_boolean force_local
)
5672 struct ppc_link_hash_entry
*eh
;
5673 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5675 eh
= (struct ppc_link_hash_entry
*) h
;
5676 if (eh
->is_func_descriptor
)
5678 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5683 struct ppc_link_hash_table
*htab
;
5686 /* We aren't supposed to use alloca in BFD because on
5687 systems which do not have alloca the version in libiberty
5688 calls xmalloc, which might cause the program to crash
5689 when it runs out of memory. This function doesn't have a
5690 return status, so there's no way to gracefully return an
5691 error. So cheat. We know that string[-1] can be safely
5692 accessed; It's either a string in an ELF string table,
5693 or allocated in an objalloc structure. */
5695 p
= eh
->elf
.root
.root
.string
- 1;
5698 htab
= ppc_hash_table (info
);
5699 fh
= (struct ppc_link_hash_entry
*)
5700 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5703 /* Unfortunately, if it so happens that the string we were
5704 looking for was allocated immediately before this string,
5705 then we overwrote the string terminator. That's the only
5706 reason the lookup should fail. */
5709 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5710 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5712 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5713 fh
= (struct ppc_link_hash_entry
*)
5714 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5723 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5728 get_sym_h (struct elf_link_hash_entry
**hp
,
5729 Elf_Internal_Sym
**symp
,
5732 Elf_Internal_Sym
**locsymsp
,
5733 unsigned long r_symndx
,
5736 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5738 if (r_symndx
>= symtab_hdr
->sh_info
)
5740 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5741 struct elf_link_hash_entry
*h
;
5743 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5744 while (h
->root
.type
== bfd_link_hash_indirect
5745 || h
->root
.type
== bfd_link_hash_warning
)
5746 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5754 if (symsecp
!= NULL
)
5756 asection
*symsec
= NULL
;
5757 if (h
->root
.type
== bfd_link_hash_defined
5758 || h
->root
.type
== bfd_link_hash_defweak
)
5759 symsec
= h
->root
.u
.def
.section
;
5763 if (tls_maskp
!= NULL
)
5765 struct ppc_link_hash_entry
*eh
;
5767 eh
= (struct ppc_link_hash_entry
*) h
;
5768 *tls_maskp
= &eh
->tls_mask
;
5773 Elf_Internal_Sym
*sym
;
5774 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5776 if (locsyms
== NULL
)
5778 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5779 if (locsyms
== NULL
)
5780 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5781 symtab_hdr
->sh_info
,
5782 0, NULL
, NULL
, NULL
);
5783 if (locsyms
== NULL
)
5785 *locsymsp
= locsyms
;
5787 sym
= locsyms
+ r_symndx
;
5795 if (symsecp
!= NULL
)
5797 asection
*symsec
= NULL
;
5798 if ((sym
->st_shndx
!= SHN_UNDEF
5799 && sym
->st_shndx
< SHN_LORESERVE
)
5800 || sym
->st_shndx
> SHN_HIRESERVE
)
5801 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5805 if (tls_maskp
!= NULL
)
5807 struct got_entry
**lgot_ents
;
5811 lgot_ents
= elf_local_got_ents (ibfd
);
5812 if (lgot_ents
!= NULL
)
5814 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5815 tls_mask
= &lgot_masks
[r_symndx
];
5817 *tls_maskp
= tls_mask
;
5823 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5824 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5825 type suitable for optimization, and 1 otherwise. */
5828 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5829 Elf_Internal_Sym
**locsymsp
,
5830 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5832 unsigned long r_symndx
;
5834 struct elf_link_hash_entry
*h
;
5835 Elf_Internal_Sym
*sym
;
5839 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5840 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5843 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5845 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5848 /* Look inside a TOC section too. */
5851 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5852 off
= h
->root
.u
.def
.value
;
5855 off
= sym
->st_value
;
5856 off
+= rel
->r_addend
;
5857 BFD_ASSERT (off
% 8 == 0);
5858 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5859 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5860 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5862 if (toc_symndx
!= NULL
)
5863 *toc_symndx
= r_symndx
;
5865 || ((h
->root
.type
== bfd_link_hash_defined
5866 || h
->root
.type
== bfd_link_hash_defweak
)
5867 && !h
->def_dynamic
))
5868 && (next_r
== -1 || next_r
== -2))
5873 /* Adjust all global syms defined in opd sections. In gcc generated
5874 code for the old ABI, these will already have been done. */
5877 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5879 struct ppc_link_hash_entry
*eh
;
5883 if (h
->root
.type
== bfd_link_hash_indirect
)
5886 if (h
->root
.type
== bfd_link_hash_warning
)
5887 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5889 if (h
->root
.type
!= bfd_link_hash_defined
5890 && h
->root
.type
!= bfd_link_hash_defweak
)
5893 eh
= (struct ppc_link_hash_entry
*) h
;
5894 if (eh
->adjust_done
)
5897 sym_sec
= eh
->elf
.root
.u
.def
.section
;
5898 opd_adjust
= get_opd_info (sym_sec
);
5899 if (opd_adjust
!= NULL
)
5901 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
5904 /* This entry has been deleted. */
5905 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
5908 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
5909 if (elf_discarded_section (dsec
))
5911 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
5915 eh
->elf
.root
.u
.def
.value
= 0;
5916 eh
->elf
.root
.u
.def
.section
= dsec
;
5919 eh
->elf
.root
.u
.def
.value
+= adjust
;
5920 eh
->adjust_done
= 1;
5925 /* Remove unused Official Procedure Descriptor entries. Currently we
5926 only remove those associated with functions in discarded link-once
5927 sections, or weakly defined functions that have been overridden. It
5928 would be possible to remove many more entries for statically linked
5932 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
5933 bfd_boolean non_overlapping
)
5936 bfd_boolean some_edited
= FALSE
;
5937 asection
*need_pad
= NULL
;
5939 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5942 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5943 Elf_Internal_Shdr
*symtab_hdr
;
5944 Elf_Internal_Sym
*local_syms
;
5945 struct elf_link_hash_entry
**sym_hashes
;
5949 bfd_boolean need_edit
, add_aux_fields
;
5950 bfd_size_type cnt_16b
= 0;
5952 sec
= bfd_get_section_by_name (ibfd
, ".opd");
5956 amt
= sec
->size
* sizeof (long) / 8;
5957 opd_adjust
= get_opd_info (sec
);
5958 if (opd_adjust
== NULL
)
5960 /* check_relocs hasn't been called. Must be a ld -r link
5961 or --just-symbols object. */
5962 opd_adjust
= bfd_zalloc (obfd
, amt
);
5963 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
5965 memset (opd_adjust
, 0, amt
);
5967 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
5970 if (sec
->output_section
== bfd_abs_section_ptr
)
5973 /* Look through the section relocs. */
5974 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
5978 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5979 sym_hashes
= elf_sym_hashes (ibfd
);
5981 /* Read the relocations. */
5982 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5984 if (relstart
== NULL
)
5987 /* First run through the relocs to check they are sane, and to
5988 determine whether we need to edit this opd section. */
5992 relend
= relstart
+ sec
->reloc_count
;
5993 for (rel
= relstart
; rel
< relend
; )
5995 enum elf_ppc64_reloc_type r_type
;
5996 unsigned long r_symndx
;
5998 struct elf_link_hash_entry
*h
;
5999 Elf_Internal_Sym
*sym
;
6001 /* .opd contains a regular array of 16 or 24 byte entries. We're
6002 only interested in the reloc pointing to a function entry
6004 if (rel
->r_offset
!= offset
6005 || rel
+ 1 >= relend
6006 || (rel
+ 1)->r_offset
!= offset
+ 8)
6008 /* If someone messes with .opd alignment then after a
6009 "ld -r" we might have padding in the middle of .opd.
6010 Also, there's nothing to prevent someone putting
6011 something silly in .opd with the assembler. No .opd
6012 optimization for them! */
6014 (*_bfd_error_handler
)
6015 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6020 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6021 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6023 (*_bfd_error_handler
)
6024 (_("%B: unexpected reloc type %u in .opd section"),
6030 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6031 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6035 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6037 const char *sym_name
;
6039 sym_name
= h
->root
.root
.string
;
6041 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
);
6043 (*_bfd_error_handler
)
6044 (_("%B: undefined sym `%s' in .opd section"),
6050 /* opd entries are always for functions defined in the
6051 current input bfd. If the symbol isn't defined in the
6052 input bfd, then we won't be using the function in this
6053 bfd; It must be defined in a linkonce section in another
6054 bfd, or is weak. It's also possible that we are
6055 discarding the function due to a linker script /DISCARD/,
6056 which we test for via the output_section. */
6057 if (sym_sec
->owner
!= ibfd
6058 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6063 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6065 if (sec
->size
== offset
+ 24)
6070 if (rel
== relend
&& sec
->size
== offset
+ 16)
6078 if (rel
->r_offset
== offset
+ 24)
6080 else if (rel
->r_offset
!= offset
+ 16)
6082 else if (rel
+ 1 < relend
6083 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6084 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6089 else if (rel
+ 2 < relend
6090 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6091 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6100 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6102 if (need_edit
|| add_aux_fields
)
6104 Elf_Internal_Rela
*write_rel
;
6105 bfd_byte
*rptr
, *wptr
;
6106 bfd_byte
*new_contents
= NULL
;
6110 /* This seems a waste of time as input .opd sections are all
6111 zeros as generated by gcc, but I suppose there's no reason
6112 this will always be so. We might start putting something in
6113 the third word of .opd entries. */
6114 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6117 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6122 if (local_syms
!= NULL
6123 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6125 if (elf_section_data (sec
)->relocs
!= relstart
)
6129 sec
->contents
= loc
;
6130 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6133 elf_section_data (sec
)->relocs
= relstart
;
6135 wptr
= sec
->contents
;
6136 rptr
= sec
->contents
;
6137 new_contents
= sec
->contents
;
6141 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6142 if (new_contents
== NULL
)
6145 wptr
= new_contents
;
6148 write_rel
= relstart
;
6152 for (rel
= relstart
; rel
< relend
; rel
++)
6154 unsigned long r_symndx
;
6156 struct elf_link_hash_entry
*h
;
6157 Elf_Internal_Sym
*sym
;
6159 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6160 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6164 if (rel
->r_offset
== offset
)
6166 struct ppc_link_hash_entry
*fdh
= NULL
;
6168 /* See if the .opd entry is full 24 byte or
6169 16 byte (with fd_aux entry overlapped with next
6172 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6173 || (rel
+ 3 < relend
6174 && rel
[2].r_offset
== offset
+ 16
6175 && rel
[3].r_offset
== offset
+ 24
6176 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6177 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6181 && h
->root
.root
.string
[0] == '.')
6182 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6183 ppc_hash_table (info
));
6185 skip
= (sym_sec
->owner
!= ibfd
6186 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6189 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6191 /* Arrange for the function descriptor sym
6193 fdh
->elf
.root
.u
.def
.value
= 0;
6194 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6196 opd_adjust
[rel
->r_offset
/ 8] = -1;
6200 /* We'll be keeping this opd entry. */
6204 /* Redefine the function descriptor symbol to
6205 this location in the opd section. It is
6206 necessary to update the value here rather
6207 than using an array of adjustments as we do
6208 for local symbols, because various places
6209 in the generic ELF code use the value
6210 stored in u.def.value. */
6211 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6212 fdh
->adjust_done
= 1;
6215 /* Local syms are a bit tricky. We could
6216 tweak them as they can be cached, but
6217 we'd need to look through the local syms
6218 for the function descriptor sym which we
6219 don't have at the moment. So keep an
6220 array of adjustments. */
6221 opd_adjust
[rel
->r_offset
/ 8]
6222 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6225 memcpy (wptr
, rptr
, opd_ent_size
);
6226 wptr
+= opd_ent_size
;
6227 if (add_aux_fields
&& opd_ent_size
== 16)
6229 memset (wptr
, '\0', 8);
6233 rptr
+= opd_ent_size
;
6234 offset
+= opd_ent_size
;
6239 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
6242 /* We won't be needing dynamic relocs here. */
6243 struct ppc_dyn_relocs
**pp
;
6244 struct ppc_dyn_relocs
*p
;
6247 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6248 else if (sym_sec
!= NULL
)
6249 pp
= ((struct ppc_dyn_relocs
**)
6250 &elf_section_data (sym_sec
)->local_dynrel
);
6252 pp
= ((struct ppc_dyn_relocs
**)
6253 &elf_section_data (sec
)->local_dynrel
);
6254 while ((p
= *pp
) != NULL
)
6269 /* We need to adjust any reloc offsets to point to the
6270 new opd entries. While we're at it, we may as well
6271 remove redundant relocs. */
6272 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6273 if (write_rel
!= rel
)
6274 memcpy (write_rel
, rel
, sizeof (*rel
));
6279 sec
->size
= wptr
- new_contents
;
6280 sec
->reloc_count
= write_rel
- relstart
;
6283 free (sec
->contents
);
6284 sec
->contents
= new_contents
;
6287 /* Fudge the size too, as this is used later in
6288 elf_bfd_final_link if we are emitting relocs. */
6289 elf_section_data (sec
)->rel_hdr
.sh_size
6290 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6291 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6294 else if (elf_section_data (sec
)->relocs
!= relstart
)
6297 if (local_syms
!= NULL
6298 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6300 if (!info
->keep_memory
)
6303 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6308 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6310 /* If we are doing a final link and the last .opd entry is just 16 byte
6311 long, add a 8 byte padding after it. */
6312 if (need_pad
!= NULL
&& !info
->relocatable
)
6316 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6318 BFD_ASSERT (need_pad
->size
> 0);
6320 p
= bfd_malloc (need_pad
->size
+ 8);
6324 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6325 p
, 0, need_pad
->size
))
6328 need_pad
->contents
= p
;
6329 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6333 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6337 need_pad
->contents
= p
;
6340 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6341 need_pad
->size
+= 8;
6347 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6350 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6352 struct ppc_link_hash_table
*htab
;
6354 htab
= ppc_hash_table (info
);
6355 if (htab
->tls_get_addr
!= NULL
)
6357 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6359 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6360 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6361 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6363 htab
->tls_get_addr
= h
;
6365 if (htab
->tls_get_addr_fd
== NULL
6367 && h
->oh
->is_func_descriptor
)
6368 htab
->tls_get_addr_fd
= h
->oh
;
6371 if (htab
->tls_get_addr_fd
!= NULL
)
6373 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6375 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6376 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6377 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6379 htab
->tls_get_addr_fd
= h
;
6382 return _bfd_elf_tls_setup (obfd
, info
);
6385 /* Run through all the TLS relocs looking for optimization
6386 opportunities. The linker has been hacked (see ppc64elf.em) to do
6387 a preliminary section layout so that we know the TLS segment
6388 offsets. We can't optimize earlier because some optimizations need
6389 to know the tp offset, and we need to optimize before allocating
6390 dynamic relocations. */
6393 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6397 struct ppc_link_hash_table
*htab
;
6399 if (info
->relocatable
|| info
->shared
)
6402 htab
= ppc_hash_table (info
);
6403 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6405 Elf_Internal_Sym
*locsyms
= NULL
;
6407 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6408 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6410 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6411 int expecting_tls_get_addr
;
6413 /* Read the relocations. */
6414 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6416 if (relstart
== NULL
)
6419 expecting_tls_get_addr
= 0;
6420 relend
= relstart
+ sec
->reloc_count
;
6421 for (rel
= relstart
; rel
< relend
; rel
++)
6423 enum elf_ppc64_reloc_type r_type
;
6424 unsigned long r_symndx
;
6425 struct elf_link_hash_entry
*h
;
6426 Elf_Internal_Sym
*sym
;
6429 char tls_set
, tls_clear
, tls_type
= 0;
6431 bfd_boolean ok_tprel
, is_local
;
6433 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6434 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6438 if (elf_section_data (sec
)->relocs
!= relstart
)
6441 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6442 != (unsigned char *) locsyms
))
6449 if (h
->root
.type
!= bfd_link_hash_defined
6450 && h
->root
.type
!= bfd_link_hash_defweak
)
6452 value
= h
->root
.u
.def
.value
;
6455 /* Symbols referenced by TLS relocs must be of type
6456 STT_TLS. So no need for .opd local sym adjust. */
6457 value
= sym
->st_value
;
6465 value
+= sym_sec
->output_offset
;
6466 value
+= sym_sec
->output_section
->vma
;
6467 value
-= htab
->elf
.tls_sec
->vma
;
6468 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6469 < (bfd_vma
) 1 << 32);
6472 r_type
= ELF64_R_TYPE (rel
->r_info
);
6475 case R_PPC64_GOT_TLSLD16
:
6476 case R_PPC64_GOT_TLSLD16_LO
:
6477 case R_PPC64_GOT_TLSLD16_HI
:
6478 case R_PPC64_GOT_TLSLD16_HA
:
6479 /* These relocs should never be against a symbol
6480 defined in a shared lib. Leave them alone if
6481 that turns out to be the case. */
6482 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6489 tls_type
= TLS_TLS
| TLS_LD
;
6490 expecting_tls_get_addr
= 1;
6493 case R_PPC64_GOT_TLSGD16
:
6494 case R_PPC64_GOT_TLSGD16_LO
:
6495 case R_PPC64_GOT_TLSGD16_HI
:
6496 case R_PPC64_GOT_TLSGD16_HA
:
6502 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6504 tls_type
= TLS_TLS
| TLS_GD
;
6505 expecting_tls_get_addr
= 1;
6508 case R_PPC64_GOT_TPREL16_DS
:
6509 case R_PPC64_GOT_TPREL16_LO_DS
:
6510 case R_PPC64_GOT_TPREL16_HI
:
6511 case R_PPC64_GOT_TPREL16_HA
:
6512 expecting_tls_get_addr
= 0;
6517 tls_clear
= TLS_TPREL
;
6518 tls_type
= TLS_TLS
| TLS_TPREL
;
6525 case R_PPC64_REL14_BRTAKEN
:
6526 case R_PPC64_REL14_BRNTAKEN
:
6529 && (h
== &htab
->tls_get_addr
->elf
6530 || h
== &htab
->tls_get_addr_fd
->elf
))
6532 if (!expecting_tls_get_addr
6534 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6536 || (ELF64_R_TYPE (rel
[-1].r_info
)
6537 == R_PPC64_TOC16_LO
)))
6539 /* Check for toc tls entries. */
6543 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6547 if (toc_tls
!= NULL
)
6548 expecting_tls_get_addr
= retval
> 1;
6551 if (expecting_tls_get_addr
)
6553 struct plt_entry
*ent
;
6554 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6555 if (ent
->addend
== 0)
6557 if (ent
->plt
.refcount
> 0)
6558 ent
->plt
.refcount
-= 1;
6563 expecting_tls_get_addr
= 0;
6566 case R_PPC64_TPREL64
:
6567 expecting_tls_get_addr
= 0;
6571 tls_set
= TLS_EXPLICIT
;
6572 tls_clear
= TLS_TPREL
;
6578 case R_PPC64_DTPMOD64
:
6579 expecting_tls_get_addr
= 0;
6580 if (rel
+ 1 < relend
6582 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6583 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6587 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6590 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6599 tls_set
= TLS_EXPLICIT
;
6605 expecting_tls_get_addr
= 0;
6609 if ((tls_set
& TLS_EXPLICIT
) == 0)
6611 struct got_entry
*ent
;
6613 /* Adjust got entry for this reloc. */
6617 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6619 for (; ent
!= NULL
; ent
= ent
->next
)
6620 if (ent
->addend
== rel
->r_addend
6621 && ent
->owner
== ibfd
6622 && ent
->tls_type
== tls_type
)
6629 /* We managed to get rid of a got entry. */
6630 if (ent
->got
.refcount
> 0)
6631 ent
->got
.refcount
-= 1;
6636 struct ppc_link_hash_entry
* eh
;
6637 struct ppc_dyn_relocs
**pp
;
6638 struct ppc_dyn_relocs
*p
;
6640 /* Adjust dynamic relocs. */
6641 eh
= (struct ppc_link_hash_entry
*) h
;
6642 for (pp
= &eh
->dyn_relocs
;
6647 /* If we got rid of a DTPMOD/DTPREL reloc
6648 pair then we'll lose one or two dyn
6650 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6659 *tls_mask
|= tls_set
;
6660 *tls_mask
&= ~tls_clear
;
6663 if (elf_section_data (sec
)->relocs
!= relstart
)
6668 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6669 != (unsigned char *) locsyms
))
6671 if (!info
->keep_memory
)
6674 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6680 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6681 the values of any global symbols in a toc section that has been
6682 edited. Globals in toc sections should be a rarity, so this function
6683 sets a flag if any are found in toc sections other than the one just
6684 edited, so that futher hash table traversals can be avoided. */
6686 struct adjust_toc_info
6689 unsigned long *skip
;
6690 bfd_boolean global_toc_syms
;
6694 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
6696 struct ppc_link_hash_entry
*eh
;
6697 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
6699 if (h
->root
.type
== bfd_link_hash_indirect
)
6702 if (h
->root
.type
== bfd_link_hash_warning
)
6703 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6705 if (h
->root
.type
!= bfd_link_hash_defined
6706 && h
->root
.type
!= bfd_link_hash_defweak
)
6709 eh
= (struct ppc_link_hash_entry
*) h
;
6710 if (eh
->adjust_done
)
6713 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
6715 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
6716 if (skip
!= (unsigned long) -1)
6717 eh
->elf
.root
.u
.def
.value
-= skip
;
6720 (*_bfd_error_handler
)
6721 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
6722 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
6723 eh
->elf
.root
.u
.def
.value
= 0;
6725 eh
->adjust_done
= 1;
6727 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
6728 toc_inf
->global_toc_syms
= TRUE
;
6733 /* Examine all relocs referencing .toc sections in order to remove
6734 unused .toc entries. */
6737 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6740 struct adjust_toc_info toc_inf
;
6742 toc_inf
.global_toc_syms
= TRUE
;
6743 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6745 asection
*toc
, *sec
;
6746 Elf_Internal_Shdr
*symtab_hdr
;
6747 Elf_Internal_Sym
*local_syms
;
6748 struct elf_link_hash_entry
**sym_hashes
;
6749 Elf_Internal_Rela
*relstart
, *rel
, *wrel
;
6750 unsigned long *skip
, *drop
;
6751 unsigned char *used
;
6752 unsigned char *keep
, last
, some_unused
;
6754 toc
= bfd_get_section_by_name (ibfd
, ".toc");
6756 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
6757 || elf_discarded_section (toc
))
6761 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6762 sym_hashes
= elf_sym_hashes (ibfd
);
6764 /* Look at sections dropped from the final link. */
6767 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6769 if (sec
->reloc_count
== 0
6770 || !elf_discarded_section (sec
)
6771 || get_opd_info (sec
)
6772 || (sec
->flags
& SEC_ALLOC
) == 0
6773 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6776 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
6777 if (relstart
== NULL
)
6780 /* Run through the relocs to see which toc entries might be
6782 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6784 enum elf_ppc64_reloc_type r_type
;
6785 unsigned long r_symndx
;
6787 struct elf_link_hash_entry
*h
;
6788 Elf_Internal_Sym
*sym
;
6791 r_type
= ELF64_R_TYPE (rel
->r_info
);
6798 case R_PPC64_TOC16_LO
:
6799 case R_PPC64_TOC16_HI
:
6800 case R_PPC64_TOC16_HA
:
6801 case R_PPC64_TOC16_DS
:
6802 case R_PPC64_TOC16_LO_DS
:
6806 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6807 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6815 val
= h
->root
.u
.def
.value
;
6817 val
= sym
->st_value
;
6818 val
+= rel
->r_addend
;
6820 if (val
>= toc
->size
)
6823 /* Anything in the toc ought to be aligned to 8 bytes.
6824 If not, don't mark as unused. */
6830 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
6838 if (elf_section_data (sec
)->relocs
!= relstart
)
6845 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
6849 if (local_syms
!= NULL
6850 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6854 && elf_section_data (sec
)->relocs
!= relstart
)
6861 /* Now check all kept sections that might reference the toc. */
6862 for (sec
= ibfd
->sections
;
6864 /* Check the toc itself last. */
6865 sec
= (sec
== toc
? NULL
6866 : sec
->next
== toc
&& sec
->next
->next
? sec
->next
->next
6867 : sec
->next
== NULL
? toc
6872 if (sec
->reloc_count
== 0
6873 || elf_discarded_section (sec
)
6874 || get_opd_info (sec
)
6875 || (sec
->flags
& SEC_ALLOC
) == 0
6876 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6879 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
6880 if (relstart
== NULL
)
6883 /* Mark toc entries referenced as used. */
6886 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6888 enum elf_ppc64_reloc_type r_type
;
6889 unsigned long r_symndx
;
6891 struct elf_link_hash_entry
*h
;
6892 Elf_Internal_Sym
*sym
;
6895 r_type
= ELF64_R_TYPE (rel
->r_info
);
6899 case R_PPC64_TOC16_LO
:
6900 case R_PPC64_TOC16_HI
:
6901 case R_PPC64_TOC16_HA
:
6902 case R_PPC64_TOC16_DS
:
6903 case R_PPC64_TOC16_LO_DS
:
6904 /* In case we're taking addresses of toc entries. */
6905 case R_PPC64_ADDR64
:
6912 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6913 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6924 val
= h
->root
.u
.def
.value
;
6926 val
= sym
->st_value
;
6927 val
+= rel
->r_addend
;
6929 if (val
>= toc
->size
)
6932 /* For the toc section, we only mark as used if
6933 this entry itself isn't unused. */
6936 && (used
[rel
->r_offset
>> 3]
6937 || !skip
[rel
->r_offset
>> 3]))
6938 /* Do all the relocs again, to catch reference
6947 /* Merge the used and skip arrays. Assume that TOC
6948 doublewords not appearing as either used or unused belong
6949 to to an entry more than one doubleword in size. */
6950 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
6951 drop
< skip
+ (toc
->size
+ 7) / 8;
6972 bfd_byte
*contents
, *src
;
6975 /* Shuffle the toc contents, and at the same time convert the
6976 skip array from booleans into offsets. */
6977 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
6980 elf_section_data (toc
)->this_hdr
.contents
= contents
;
6982 for (src
= contents
, off
= 0, drop
= skip
;
6983 src
< contents
+ toc
->size
;
6988 *drop
= (unsigned long) -1;
6994 memcpy (src
- off
, src
, 8);
6997 toc
->rawsize
= toc
->size
;
6998 toc
->size
= src
- contents
- off
;
7000 /* Read toc relocs. */
7001 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
, TRUE
);
7002 if (relstart
== NULL
)
7005 /* Remove unused toc relocs, and adjust those we keep. */
7007 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7008 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7010 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7011 wrel
->r_info
= rel
->r_info
;
7012 wrel
->r_addend
= rel
->r_addend
;
7015 toc
->reloc_count
= wrel
- relstart
;
7016 elf_section_data (toc
)->rel_hdr
.sh_size
7017 = toc
->reloc_count
* elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7018 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7020 /* Adjust addends for relocs against the toc section sym. */
7021 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7023 if (sec
->reloc_count
== 0
7024 || elf_discarded_section (sec
))
7027 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7029 if (relstart
== NULL
)
7032 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7034 enum elf_ppc64_reloc_type r_type
;
7035 unsigned long r_symndx
;
7037 struct elf_link_hash_entry
*h
;
7038 Elf_Internal_Sym
*sym
;
7040 r_type
= ELF64_R_TYPE (rel
->r_info
);
7047 case R_PPC64_TOC16_LO
:
7048 case R_PPC64_TOC16_HI
:
7049 case R_PPC64_TOC16_HA
:
7050 case R_PPC64_TOC16_DS
:
7051 case R_PPC64_TOC16_LO_DS
:
7052 case R_PPC64_ADDR64
:
7056 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7057 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7061 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7064 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7068 /* We shouldn't have local or global symbols defined in the TOC,
7069 but handle them anyway. */
7070 if (local_syms
!= NULL
)
7072 Elf_Internal_Sym
*sym
;
7074 for (sym
= local_syms
;
7075 sym
< local_syms
+ symtab_hdr
->sh_info
;
7077 if (sym
->st_shndx
!= SHN_UNDEF
7078 && (sym
->st_shndx
< SHN_LORESERVE
7079 || sym
->st_shndx
> SHN_HIRESERVE
)
7080 && sym
->st_value
!= 0
7081 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7083 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7084 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7087 (*_bfd_error_handler
)
7088 (_("%s defined in removed toc entry"),
7089 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
));
7091 sym
->st_shndx
= SHN_ABS
;
7093 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7097 /* Finally, adjust any global syms defined in the toc. */
7098 if (toc_inf
.global_toc_syms
)
7101 toc_inf
.skip
= skip
;
7102 toc_inf
.global_toc_syms
= FALSE
;
7103 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7108 if (local_syms
!= NULL
7109 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7111 if (!info
->keep_memory
)
7114 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7122 /* Allocate space in .plt, .got and associated reloc sections for
7126 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7128 struct bfd_link_info
*info
;
7129 struct ppc_link_hash_table
*htab
;
7131 struct ppc_link_hash_entry
*eh
;
7132 struct ppc_dyn_relocs
*p
;
7133 struct got_entry
*gent
;
7135 if (h
->root
.type
== bfd_link_hash_indirect
)
7138 if (h
->root
.type
== bfd_link_hash_warning
)
7139 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7141 info
= (struct bfd_link_info
*) inf
;
7142 htab
= ppc_hash_table (info
);
7144 if (htab
->elf
.dynamic_sections_created
7146 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7148 struct plt_entry
*pent
;
7149 bfd_boolean doneone
= FALSE
;
7150 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7151 if (pent
->plt
.refcount
> 0)
7153 /* If this is the first .plt entry, make room for the special
7157 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7159 pent
->plt
.offset
= s
->size
;
7161 /* Make room for this entry. */
7162 s
->size
+= PLT_ENTRY_SIZE
;
7164 /* Make room for the .glink code. */
7167 s
->size
+= GLINK_CALL_STUB_SIZE
;
7168 /* We need bigger stubs past index 32767. */
7169 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7173 /* We also need to make an entry in the .rela.plt section. */
7175 s
->size
+= sizeof (Elf64_External_Rela
);
7179 pent
->plt
.offset
= (bfd_vma
) -1;
7182 h
->plt
.plist
= NULL
;
7188 h
->plt
.plist
= NULL
;
7192 eh
= (struct ppc_link_hash_entry
*) h
;
7193 /* Run through the TLS GD got entries first if we're changing them
7195 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7196 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7197 if (gent
->got
.refcount
> 0
7198 && (gent
->tls_type
& TLS_GD
) != 0)
7200 /* This was a GD entry that has been converted to TPREL. If
7201 there happens to be a TPREL entry we can use that one. */
7202 struct got_entry
*ent
;
7203 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7204 if (ent
->got
.refcount
> 0
7205 && (ent
->tls_type
& TLS_TPREL
) != 0
7206 && ent
->addend
== gent
->addend
7207 && ent
->owner
== gent
->owner
)
7209 gent
->got
.refcount
= 0;
7213 /* If not, then we'll be using our own TPREL entry. */
7214 if (gent
->got
.refcount
!= 0)
7215 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7218 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7219 if (gent
->got
.refcount
> 0)
7223 /* Make sure this symbol is output as a dynamic symbol.
7224 Undefined weak syms won't yet be marked as dynamic,
7225 nor will all TLS symbols. */
7226 if (h
->dynindx
== -1
7227 && !h
->forced_local
)
7229 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7233 if ((gent
->tls_type
& TLS_LD
) != 0
7236 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7240 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7241 gent
->got
.offset
= s
->size
;
7243 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7244 dyn
= htab
->elf
.dynamic_sections_created
;
7246 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7247 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7248 || h
->root
.type
!= bfd_link_hash_undefweak
))
7249 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7250 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7251 ? 2 * sizeof (Elf64_External_Rela
)
7252 : sizeof (Elf64_External_Rela
));
7255 gent
->got
.offset
= (bfd_vma
) -1;
7257 if (eh
->dyn_relocs
== NULL
)
7260 /* In the shared -Bsymbolic case, discard space allocated for
7261 dynamic pc-relative relocs against symbols which turn out to be
7262 defined in regular objects. For the normal shared case, discard
7263 space for relocs that have become local due to symbol visibility
7268 /* Relocs that use pc_count are those that appear on a call insn,
7269 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7270 generated via assembly. We want calls to protected symbols to
7271 resolve directly to the function rather than going via the plt.
7272 If people want function pointer comparisons to work as expected
7273 then they should avoid writing weird assembly. */
7274 if (SYMBOL_CALLS_LOCAL (info
, h
))
7276 struct ppc_dyn_relocs
**pp
;
7278 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7280 p
->count
-= p
->pc_count
;
7289 /* Also discard relocs on undefined weak syms with non-default
7291 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7292 && h
->root
.type
== bfd_link_hash_undefweak
)
7293 eh
->dyn_relocs
= NULL
;
7295 else if (ELIMINATE_COPY_RELOCS
)
7297 /* For the non-shared case, discard space for relocs against
7298 symbols which turn out to need copy relocs or are not
7305 /* Make sure this symbol is output as a dynamic symbol.
7306 Undefined weak syms won't yet be marked as dynamic. */
7307 if (h
->dynindx
== -1
7308 && !h
->forced_local
)
7310 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7314 /* If that succeeded, we know we'll be keeping all the
7316 if (h
->dynindx
!= -1)
7320 eh
->dyn_relocs
= NULL
;
7325 /* Finally, allocate space. */
7326 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7328 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7329 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7335 /* Find any dynamic relocs that apply to read-only sections. */
7338 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7340 struct ppc_link_hash_entry
*eh
;
7341 struct ppc_dyn_relocs
*p
;
7343 if (h
->root
.type
== bfd_link_hash_warning
)
7344 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7346 eh
= (struct ppc_link_hash_entry
*) h
;
7347 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7349 asection
*s
= p
->sec
->output_section
;
7351 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7353 struct bfd_link_info
*info
= inf
;
7355 info
->flags
|= DF_TEXTREL
;
7357 /* Not an error, just cut short the traversal. */
7364 /* Set the sizes of the dynamic sections. */
7367 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7368 struct bfd_link_info
*info
)
7370 struct ppc_link_hash_table
*htab
;
7376 htab
= ppc_hash_table (info
);
7377 dynobj
= htab
->elf
.dynobj
;
7381 if (htab
->elf
.dynamic_sections_created
)
7383 /* Set the contents of the .interp section to the interpreter. */
7384 if (info
->executable
)
7386 s
= bfd_get_section_by_name (dynobj
, ".interp");
7389 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7390 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7394 /* Set up .got offsets for local syms, and space for local dynamic
7396 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7398 struct got_entry
**lgot_ents
;
7399 struct got_entry
**end_lgot_ents
;
7401 bfd_size_type locsymcount
;
7402 Elf_Internal_Shdr
*symtab_hdr
;
7405 if (!is_ppc64_elf_target (ibfd
->xvec
))
7408 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7410 s
= ppc64_elf_tdata (ibfd
)->got
;
7411 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7415 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7416 srel
->size
+= sizeof (Elf64_External_Rela
);
7420 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7422 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7424 struct ppc_dyn_relocs
*p
;
7426 for (p
= *((struct ppc_dyn_relocs
**)
7427 &elf_section_data (s
)->local_dynrel
);
7431 if (!bfd_is_abs_section (p
->sec
)
7432 && bfd_is_abs_section (p
->sec
->output_section
))
7434 /* Input section has been discarded, either because
7435 it is a copy of a linkonce section or due to
7436 linker script /DISCARD/, so we'll be discarding
7439 else if (p
->count
!= 0)
7441 srel
= elf_section_data (p
->sec
)->sreloc
;
7442 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7443 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7444 info
->flags
|= DF_TEXTREL
;
7449 lgot_ents
= elf_local_got_ents (ibfd
);
7453 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7454 locsymcount
= symtab_hdr
->sh_info
;
7455 end_lgot_ents
= lgot_ents
+ locsymcount
;
7456 lgot_masks
= (char *) end_lgot_ents
;
7457 s
= ppc64_elf_tdata (ibfd
)->got
;
7458 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7459 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7461 struct got_entry
*ent
;
7463 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7464 if (ent
->got
.refcount
> 0)
7466 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7468 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7470 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7473 srel
->size
+= sizeof (Elf64_External_Rela
);
7475 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7479 ent
->got
.offset
= s
->size
;
7480 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7484 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7490 srel
->size
+= sizeof (Elf64_External_Rela
);
7495 ent
->got
.offset
= (bfd_vma
) -1;
7499 /* Allocate global sym .plt and .got entries, and space for global
7500 sym dynamic relocs. */
7501 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7503 /* We now have determined the sizes of the various dynamic sections.
7504 Allocate memory for them. */
7506 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7508 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7511 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7512 /* These haven't been allocated yet; don't strip. */
7514 else if (s
== htab
->got
7516 || s
== htab
->glink
)
7518 /* Strip this section if we don't need it; see the
7521 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7525 /* If we don't need this section, strip it from the
7526 output file. This is mostly to handle .rela.bss and
7527 .rela.plt. We must create both sections in
7528 create_dynamic_sections, because they must be created
7529 before the linker maps input sections to output
7530 sections. The linker does that before
7531 adjust_dynamic_symbol is called, and it is that
7532 function which decides whether anything needs to go
7533 into these sections. */
7537 if (s
!= htab
->relplt
)
7540 /* We use the reloc_count field as a counter if we need
7541 to copy relocs into the output file. */
7547 /* It's not one of our sections, so don't allocate space. */
7553 _bfd_strip_section_from_output (info
, s
);
7557 /* .plt is in the bss section. We don't initialise it. */
7561 /* Allocate memory for the section contents. We use bfd_zalloc
7562 here in case unused entries are not reclaimed before the
7563 section's contents are written out. This should not happen,
7564 but this way if it does we get a R_PPC64_NONE reloc in .rela
7565 sections instead of garbage.
7566 We also rely on the section contents being zero when writing
7568 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7569 if (s
->contents
== NULL
)
7573 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7575 if (!is_ppc64_elf_target (ibfd
->xvec
))
7578 s
= ppc64_elf_tdata (ibfd
)->got
;
7579 if (s
!= NULL
&& s
!= htab
->got
)
7582 _bfd_strip_section_from_output (info
, s
);
7585 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7586 if (s
->contents
== NULL
)
7590 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7594 _bfd_strip_section_from_output (info
, s
);
7597 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7598 if (s
->contents
== NULL
)
7606 if (htab
->elf
.dynamic_sections_created
)
7608 /* Add some entries to the .dynamic section. We fill in the
7609 values later, in ppc64_elf_finish_dynamic_sections, but we
7610 must add the entries now so that we get the correct size for
7611 the .dynamic section. The DT_DEBUG entry is filled in by the
7612 dynamic linker and used by the debugger. */
7613 #define add_dynamic_entry(TAG, VAL) \
7614 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7616 if (info
->executable
)
7618 if (!add_dynamic_entry (DT_DEBUG
, 0))
7622 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7624 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7625 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7626 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7627 || !add_dynamic_entry (DT_JMPREL
, 0)
7628 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7634 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7635 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7641 if (!add_dynamic_entry (DT_RELA
, 0)
7642 || !add_dynamic_entry (DT_RELASZ
, 0)
7643 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7646 /* If any dynamic relocs apply to a read-only section,
7647 then we need a DT_TEXTREL entry. */
7648 if ((info
->flags
& DF_TEXTREL
) == 0)
7649 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7651 if ((info
->flags
& DF_TEXTREL
) != 0)
7653 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7658 #undef add_dynamic_entry
7663 /* Determine the type of stub needed, if any, for a call. */
7665 static inline enum ppc_stub_type
7666 ppc_type_of_stub (asection
*input_sec
,
7667 const Elf_Internal_Rela
*rel
,
7668 struct ppc_link_hash_entry
**hash
,
7669 bfd_vma destination
)
7671 struct ppc_link_hash_entry
*h
= *hash
;
7673 bfd_vma branch_offset
;
7674 bfd_vma max_branch_offset
;
7675 enum elf_ppc64_reloc_type r_type
;
7680 && h
->oh
->is_func_descriptor
)
7683 if (h
->elf
.dynindx
!= -1)
7685 struct plt_entry
*ent
;
7687 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7688 if (ent
->addend
== rel
->r_addend
7689 && ent
->plt
.offset
!= (bfd_vma
) -1)
7692 return ppc_stub_plt_call
;
7696 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7697 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7698 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7699 return ppc_stub_none
;
7702 /* Determine where the call point is. */
7703 location
= (input_sec
->output_offset
7704 + input_sec
->output_section
->vma
7707 branch_offset
= destination
- location
;
7708 r_type
= ELF64_R_TYPE (rel
->r_info
);
7710 /* Determine if a long branch stub is needed. */
7711 max_branch_offset
= 1 << 25;
7712 if (r_type
!= R_PPC64_REL24
)
7713 max_branch_offset
= 1 << 15;
7715 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7716 /* We need a stub. Figure out whether a long_branch or plt_branch
7718 return ppc_stub_long_branch
;
7720 return ppc_stub_none
;
7723 /* Build a .plt call stub. */
7725 static inline bfd_byte
*
7726 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7728 #define PPC_LO(v) ((v) & 0xffff)
7729 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7730 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7732 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7733 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7734 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7735 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7736 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7738 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7739 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7740 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7742 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7743 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7744 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7749 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7751 struct ppc_stub_hash_entry
*stub_entry
;
7752 struct ppc_branch_hash_entry
*br_entry
;
7753 struct bfd_link_info
*info
;
7754 struct ppc_link_hash_table
*htab
;
7758 struct plt_entry
*ent
;
7762 /* Massage our args to the form they really have. */
7763 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7766 htab
= ppc_hash_table (info
);
7768 /* Make a note of the offset within the stubs for this entry. */
7769 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7770 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7772 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7773 switch (stub_entry
->stub_type
)
7775 case ppc_stub_long_branch
:
7776 case ppc_stub_long_branch_r2off
:
7777 /* Branches are relative. This is where we are going to. */
7778 off
= dest
= (stub_entry
->target_value
7779 + stub_entry
->target_section
->output_offset
7780 + stub_entry
->target_section
->output_section
->vma
);
7782 /* And this is where we are coming from. */
7783 off
-= (stub_entry
->stub_offset
7784 + stub_entry
->stub_sec
->output_offset
7785 + stub_entry
->stub_sec
->output_section
->vma
);
7787 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
7793 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7794 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7795 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7797 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7799 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7804 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
7806 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
7808 if (info
->emitrelocations
)
7810 Elf_Internal_Rela
*relocs
, *r
;
7811 struct bfd_elf_section_data
*elfsec_data
;
7813 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
7814 relocs
= elfsec_data
->relocs
;
7817 bfd_size_type relsize
;
7818 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
7819 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
7822 elfsec_data
->relocs
= relocs
;
7823 elfsec_data
->rel_hdr
.sh_size
= relsize
;
7824 elfsec_data
->rel_hdr
.sh_entsize
= 24;
7825 stub_entry
->stub_sec
->reloc_count
= 0;
7827 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
7828 stub_entry
->stub_sec
->reloc_count
+= 1;
7829 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
7830 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
7832 if (stub_entry
->h
!= NULL
)
7834 struct elf_link_hash_entry
**hashes
;
7835 unsigned long symndx
;
7836 struct ppc_link_hash_entry
*h
;
7838 hashes
= elf_sym_hashes (htab
->stub_bfd
);
7841 bfd_size_type hsize
;
7843 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
7844 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
7847 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
7848 htab
->stub_globals
= 1;
7850 symndx
= htab
->stub_globals
++;
7852 hashes
[symndx
] = &h
->elf
;
7853 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
7854 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
7856 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
7857 /* H is an opd symbol. The addend must be zero. */
7861 off
= (h
->elf
.root
.u
.def
.value
7862 + h
->elf
.root
.u
.def
.section
->output_offset
7863 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
7870 case ppc_stub_plt_branch
:
7871 case ppc_stub_plt_branch_r2off
:
7872 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7873 stub_entry
->root
.string
+ 9,
7875 if (br_entry
== NULL
)
7877 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
7878 stub_entry
->root
.string
+ 9);
7879 htab
->stub_error
= TRUE
;
7883 off
= (stub_entry
->target_value
7884 + stub_entry
->target_section
->output_offset
7885 + stub_entry
->target_section
->output_section
->vma
);
7887 bfd_put_64 (htab
->brlt
->owner
, off
,
7888 htab
->brlt
->contents
+ br_entry
->offset
);
7890 if (htab
->relbrlt
!= NULL
)
7892 /* Create a reloc for the branch lookup table entry. */
7893 Elf_Internal_Rela rela
;
7896 rela
.r_offset
= (br_entry
->offset
7897 + htab
->brlt
->output_offset
7898 + htab
->brlt
->output_section
->vma
);
7899 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
7900 rela
.r_addend
= off
;
7902 rl
= htab
->relbrlt
->contents
;
7903 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
7904 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
7907 off
= (br_entry
->offset
7908 + htab
->brlt
->output_offset
7909 + htab
->brlt
->output_section
->vma
7910 - elf_gp (htab
->brlt
->output_section
->owner
)
7911 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7913 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7915 (*_bfd_error_handler
)
7916 (_("linkage table error against `%s'"),
7917 stub_entry
->root
.string
);
7918 bfd_set_error (bfd_error_bad_value
);
7919 htab
->stub_error
= TRUE
;
7924 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
7926 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7928 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7935 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7936 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7937 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7939 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7941 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7943 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7945 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7949 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
7951 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
7954 case ppc_stub_plt_call
:
7955 /* Do the best we can for shared libraries built without
7956 exporting ".foo" for each "foo". This can happen when symbol
7957 versioning scripts strip all bar a subset of symbols. */
7958 if (stub_entry
->h
->oh
!= NULL
7959 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
7960 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7962 /* Point the symbol at the stub. There may be multiple stubs,
7963 we don't really care; The main thing is to make this sym
7964 defined somewhere. Maybe defining the symbol in the stub
7965 section is a silly idea. If we didn't do this, htab->top_id
7967 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
7968 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
7969 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
7972 /* Now build the stub. */
7974 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7975 if (ent
->addend
== stub_entry
->addend
)
7977 off
= ent
->plt
.offset
;
7980 if (off
>= (bfd_vma
) -2)
7983 off
&= ~ (bfd_vma
) 1;
7984 off
+= (htab
->plt
->output_offset
7985 + htab
->plt
->output_section
->vma
7986 - elf_gp (htab
->plt
->output_section
->owner
)
7987 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7989 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7991 (*_bfd_error_handler
)
7992 (_("linkage table error against `%s'"),
7993 stub_entry
->h
->elf
.root
.root
.string
);
7994 bfd_set_error (bfd_error_bad_value
);
7995 htab
->stub_error
= TRUE
;
7999 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
8008 stub_entry
->stub_sec
->size
+= size
;
8010 if (htab
->emit_stub_syms
)
8012 struct elf_link_hash_entry
*h
;
8015 const char *const stub_str
[] = { "long_branch",
8016 "long_branch_r2off",
8021 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8022 len2
= strlen (stub_entry
->root
.string
);
8023 name
= bfd_malloc (len1
+ len2
+ 2);
8026 memcpy (name
, stub_entry
->root
.string
, 9);
8027 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8028 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8029 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8032 if (h
->root
.type
== bfd_link_hash_new
)
8034 h
->root
.type
= bfd_link_hash_defined
;
8035 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8036 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8039 h
->ref_regular_nonweak
= 1;
8040 h
->forced_local
= 1;
8048 /* As above, but don't actually build the stub. Just bump offset so
8049 we know stub section sizes, and select plt_branch stubs where
8050 long_branch stubs won't do. */
8053 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8055 struct ppc_stub_hash_entry
*stub_entry
;
8056 struct bfd_link_info
*info
;
8057 struct ppc_link_hash_table
*htab
;
8061 /* Massage our args to the form they really have. */
8062 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8065 htab
= ppc_hash_table (info
);
8067 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8069 struct plt_entry
*ent
;
8071 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8072 if (ent
->addend
== stub_entry
->addend
)
8074 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8077 if (off
>= (bfd_vma
) -2)
8079 off
+= (htab
->plt
->output_offset
8080 + htab
->plt
->output_section
->vma
8081 - elf_gp (htab
->plt
->output_section
->owner
)
8082 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8084 size
= PLT_CALL_STUB_SIZE
;
8085 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8090 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8092 off
= (stub_entry
->target_value
8093 + stub_entry
->target_section
->output_offset
8094 + stub_entry
->target_section
->output_section
->vma
);
8095 off
-= (stub_entry
->stub_sec
->size
8096 + stub_entry
->stub_sec
->output_offset
8097 + stub_entry
->stub_sec
->output_section
->vma
);
8099 /* Reset the stub type from the plt variant in case we now
8100 can reach with a shorter stub. */
8101 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8102 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8105 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8111 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8112 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8114 struct ppc_branch_hash_entry
*br_entry
;
8116 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8117 stub_entry
->root
.string
+ 9,
8119 if (br_entry
== NULL
)
8121 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8122 stub_entry
->root
.string
+ 9);
8123 htab
->stub_error
= TRUE
;
8127 if (br_entry
->iter
!= htab
->stub_iteration
)
8129 br_entry
->iter
= htab
->stub_iteration
;
8130 br_entry
->offset
= htab
->brlt
->size
;
8131 htab
->brlt
->size
+= 8;
8133 if (htab
->relbrlt
!= NULL
)
8134 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8137 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8139 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8143 if (info
->emitrelocations
8144 && (stub_entry
->stub_type
== ppc_stub_long_branch
8145 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8146 stub_entry
->stub_sec
->reloc_count
+= 1;
8149 stub_entry
->stub_sec
->size
+= size
;
8153 /* Set up various things so that we can make a list of input sections
8154 for each output section included in the link. Returns -1 on error,
8155 0 when no stubs will be needed, and 1 on success. */
8158 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8159 struct bfd_link_info
*info
,
8163 int top_id
, top_index
, id
;
8165 asection
**input_list
;
8167 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8169 htab
->no_multi_toc
= no_multi_toc
;
8171 if (htab
->brlt
== NULL
)
8174 /* Find the top input section id. */
8175 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8177 input_bfd
= input_bfd
->link_next
)
8179 for (section
= input_bfd
->sections
;
8181 section
= section
->next
)
8183 if (top_id
< section
->id
)
8184 top_id
= section
->id
;
8188 htab
->top_id
= top_id
;
8189 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8190 htab
->stub_group
= bfd_zmalloc (amt
);
8191 if (htab
->stub_group
== NULL
)
8194 /* Set toc_off for com, und, abs and ind sections. */
8195 for (id
= 0; id
< 3; id
++)
8196 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8198 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8200 /* We can't use output_bfd->section_count here to find the top output
8201 section index as some sections may have been removed, and
8202 _bfd_strip_section_from_output doesn't renumber the indices. */
8203 for (section
= output_bfd
->sections
, top_index
= 0;
8205 section
= section
->next
)
8207 if (top_index
< section
->index
)
8208 top_index
= section
->index
;
8211 htab
->top_index
= top_index
;
8212 amt
= sizeof (asection
*) * (top_index
+ 1);
8213 input_list
= bfd_zmalloc (amt
);
8214 htab
->input_list
= input_list
;
8215 if (input_list
== NULL
)
8221 /* The linker repeatedly calls this function for each TOC input section
8222 and linker generated GOT section. Group input bfds such that the toc
8223 within a group is less than 64k in size. Will break with cute linker
8224 scripts that play games with dot in the output toc section. */
8227 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8229 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8231 if (!htab
->no_multi_toc
)
8233 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8234 bfd_vma off
= addr
- htab
->toc_curr
;
8236 if (off
+ isec
->size
> 0x10000)
8237 htab
->toc_curr
= addr
;
8239 elf_gp (isec
->owner
) = (htab
->toc_curr
8240 - elf_gp (isec
->output_section
->owner
)
8245 /* Called after the last call to the above function. */
8248 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8250 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8252 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8254 /* toc_curr tracks the TOC offset used for code sections below in
8255 ppc64_elf_next_input_section. Start off at 0x8000. */
8256 htab
->toc_curr
= TOC_BASE_OFF
;
8259 /* No toc references were found in ISEC. If the code in ISEC makes no
8260 calls, then there's no need to use toc adjusting stubs when branching
8261 into ISEC. Actually, indirect calls from ISEC are OK as they will
8262 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8263 needed, and 2 if a cyclical call-graph was found but no other reason
8264 for a stub was detected. If called from the top level, a return of
8265 2 means the same as a return of 0. */
8268 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8270 Elf_Internal_Rela
*relstart
, *rel
;
8271 Elf_Internal_Sym
*local_syms
;
8273 struct ppc_link_hash_table
*htab
;
8275 /* We know none of our code bearing sections will need toc stubs. */
8276 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8279 if (isec
->size
== 0)
8282 if (isec
->output_section
== NULL
)
8285 /* Hack for linux kernel. .fixup contains branches, but only back to
8286 the function that hit an exception. */
8287 if (strcmp (isec
->name
, ".fixup") == 0)
8290 if (isec
->reloc_count
== 0)
8293 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8295 if (relstart
== NULL
)
8298 /* Look for branches to outside of this section. */
8301 htab
= ppc_hash_table (info
);
8302 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8304 enum elf_ppc64_reloc_type r_type
;
8305 unsigned long r_symndx
;
8306 struct elf_link_hash_entry
*h
;
8307 Elf_Internal_Sym
*sym
;
8313 r_type
= ELF64_R_TYPE (rel
->r_info
);
8314 if (r_type
!= R_PPC64_REL24
8315 && r_type
!= R_PPC64_REL14
8316 && r_type
!= R_PPC64_REL14_BRTAKEN
8317 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8320 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8321 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8328 /* Ignore branches to undefined syms. */
8329 if (sym_sec
== NULL
)
8332 /* Calls to dynamic lib functions go through a plt call stub
8333 that uses r2. Assume branches to other sections not included
8334 in the link need stubs too, to cover -R and absolute syms. */
8335 if (sym_sec
->output_section
== NULL
)
8342 sym_value
= sym
->st_value
;
8345 if (h
->root
.type
!= bfd_link_hash_defined
8346 && h
->root
.type
!= bfd_link_hash_defweak
)
8348 sym_value
= h
->root
.u
.def
.value
;
8350 sym_value
+= rel
->r_addend
;
8352 /* If this branch reloc uses an opd sym, find the code section. */
8353 opd_adjust
= get_opd_info (sym_sec
);
8354 if (opd_adjust
!= NULL
)
8361 adjust
= opd_adjust
[sym
->st_value
/ 8];
8363 /* Assume deleted functions won't ever be called. */
8365 sym_value
+= adjust
;
8368 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8369 if (dest
== (bfd_vma
) -1)
8374 + sym_sec
->output_offset
8375 + sym_sec
->output_section
->vma
);
8377 /* Ignore branch to self. */
8378 if (sym_sec
== isec
)
8381 /* If the called function uses the toc, we need a stub. */
8382 if (sym_sec
->has_toc_reloc
8383 || sym_sec
->makes_toc_func_call
)
8389 /* Assume any branch that needs a long branch stub might in fact
8390 need a plt_branch stub. A plt_branch stub uses r2. */
8391 else if (dest
- (isec
->output_offset
8392 + isec
->output_section
->vma
8393 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8399 /* If calling back to a section in the process of being tested, we
8400 can't say for sure that no toc adjusting stubs are needed, so
8401 don't return zero. */
8402 else if (sym_sec
->call_check_in_progress
)
8405 /* Branches to another section that itself doesn't have any TOC
8406 references are OK. Recursively call ourselves to check. */
8407 else if (sym_sec
->id
<= htab
->top_id
8408 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8412 /* Mark current section as indeterminate, so that other
8413 sections that call back to current won't be marked as
8415 isec
->call_check_in_progress
= 1;
8416 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8417 isec
->call_check_in_progress
= 0;
8421 /* An error. Exit. */
8425 else if (recur
<= 1)
8427 /* Known result. Mark as checked and set section flag. */
8428 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8431 sym_sec
->makes_toc_func_call
= 1;
8438 /* Unknown result. Continue checking. */
8444 if (local_syms
!= NULL
8445 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8446 != (unsigned char *) local_syms
))
8448 if (elf_section_data (isec
)->relocs
!= relstart
)
8454 /* The linker repeatedly calls this function for each input section,
8455 in the order that input sections are linked into output sections.
8456 Build lists of input sections to determine groupings between which
8457 we may insert linker stubs. */
8460 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8462 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8464 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
8465 && isec
->output_section
->index
<= htab
->top_index
)
8467 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
8468 /* Steal the link_sec pointer for our list. */
8469 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8470 /* This happens to make the list in reverse order,
8471 which is what we want. */
8472 PREV_SEC (isec
) = *list
;
8476 if (htab
->multi_toc_needed
)
8478 /* If a code section has a function that uses the TOC then we need
8479 to use the right TOC (obviously). Also, make sure that .opd gets
8480 the correct TOC value for R_PPC64_TOC relocs that don't have or
8481 can't find their function symbol (shouldn't ever happen now). */
8482 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
8484 if (elf_gp (isec
->owner
) != 0)
8485 htab
->toc_curr
= elf_gp (isec
->owner
);
8487 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
8489 int ret
= toc_adjusting_stub_needed (info
, isec
);
8493 isec
->makes_toc_func_call
= ret
& 1;
8497 /* Functions that don't use the TOC can belong in any TOC group.
8498 Use the last TOC base. This happens to make _init and _fini
8500 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
8504 /* See whether we can group stub sections together. Grouping stub
8505 sections may result in fewer stubs. More importantly, we need to
8506 put all .init* and .fini* stubs at the beginning of the .init or
8507 .fini output sections respectively, because glibc splits the
8508 _init and _fini functions into multiple parts. Putting a stub in
8509 the middle of a function is not a good idea. */
8512 group_sections (struct ppc_link_hash_table
*htab
,
8513 bfd_size_type stub_group_size
,
8514 bfd_boolean stubs_always_before_branch
)
8516 asection
**list
= htab
->input_list
+ htab
->top_index
;
8519 asection
*tail
= *list
;
8520 while (tail
!= NULL
)
8524 bfd_size_type total
;
8525 bfd_boolean big_sec
;
8530 big_sec
= total
>= stub_group_size
;
8531 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
8533 while ((prev
= PREV_SEC (curr
)) != NULL
8534 && ((total
+= curr
->output_offset
- prev
->output_offset
)
8536 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8539 /* OK, the size from the start of CURR to the end is less
8540 than stub_group_size and thus can be handled by one stub
8541 section. (or the tail section is itself larger than
8542 stub_group_size, in which case we may be toast.) We
8543 should really be keeping track of the total size of stubs
8544 added here, as stubs contribute to the final output
8545 section size. That's a little tricky, and this way will
8546 only break if stubs added make the total size more than
8547 2^25, ie. for the default stub_group_size, if stubs total
8548 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8551 prev
= PREV_SEC (tail
);
8552 /* Set up this stub group. */
8553 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8555 while (tail
!= curr
&& (tail
= prev
) != NULL
);
8557 /* But wait, there's more! Input sections up to stub_group_size
8558 bytes before the stub section can be handled by it too.
8559 Don't do this if we have a really large section after the
8560 stubs, as adding more stubs increases the chance that
8561 branches may not reach into the stub section. */
8562 if (!stubs_always_before_branch
&& !big_sec
)
8566 && ((total
+= tail
->output_offset
- prev
->output_offset
)
8568 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8571 prev
= PREV_SEC (tail
);
8572 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8578 while (list
-- != htab
->input_list
);
8579 free (htab
->input_list
);
8583 /* Determine and set the size of the stub section for a final link.
8585 The basic idea here is to examine all the relocations looking for
8586 PC-relative calls to a target that is unreachable with a "bl"
8590 ppc64_elf_size_stubs (bfd
*output_bfd
,
8591 struct bfd_link_info
*info
,
8592 bfd_signed_vma group_size
,
8593 asection
*(*add_stub_section
) (const char *, asection
*),
8594 void (*layout_sections_again
) (void))
8596 bfd_size_type stub_group_size
;
8597 bfd_boolean stubs_always_before_branch
;
8598 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8600 /* Stash our params away. */
8601 htab
->add_stub_section
= add_stub_section
;
8602 htab
->layout_sections_again
= layout_sections_again
;
8603 stubs_always_before_branch
= group_size
< 0;
8605 stub_group_size
= -group_size
;
8607 stub_group_size
= group_size
;
8608 if (stub_group_size
== 1)
8610 /* Default values. */
8611 if (stubs_always_before_branch
)
8613 stub_group_size
= 0x1e00000;
8614 if (htab
->has_14bit_branch
)
8615 stub_group_size
= 0x7800;
8619 stub_group_size
= 0x1c00000;
8620 if (htab
->has_14bit_branch
)
8621 stub_group_size
= 0x7000;
8625 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
8630 unsigned int bfd_indx
;
8632 bfd_boolean stub_changed
;
8634 htab
->stub_iteration
+= 1;
8635 stub_changed
= FALSE
;
8637 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
8639 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
8641 Elf_Internal_Shdr
*symtab_hdr
;
8643 Elf_Internal_Sym
*local_syms
= NULL
;
8645 /* We'll need the symbol table in a second. */
8646 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8647 if (symtab_hdr
->sh_info
== 0)
8650 /* Walk over each section attached to the input bfd. */
8651 for (section
= input_bfd
->sections
;
8653 section
= section
->next
)
8655 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
8657 /* If there aren't any relocs, then there's nothing more
8659 if ((section
->flags
& SEC_RELOC
) == 0
8660 || section
->reloc_count
== 0)
8663 /* If this section is a link-once section that will be
8664 discarded, then don't create any stubs. */
8665 if (section
->output_section
== NULL
8666 || section
->output_section
->owner
!= output_bfd
)
8669 /* Get the relocs. */
8671 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
8673 if (internal_relocs
== NULL
)
8674 goto error_ret_free_local
;
8676 /* Now examine each relocation. */
8677 irela
= internal_relocs
;
8678 irelaend
= irela
+ section
->reloc_count
;
8679 for (; irela
< irelaend
; irela
++)
8681 enum elf_ppc64_reloc_type r_type
;
8682 unsigned int r_indx
;
8683 enum ppc_stub_type stub_type
;
8684 struct ppc_stub_hash_entry
*stub_entry
;
8685 asection
*sym_sec
, *code_sec
;
8687 bfd_vma destination
;
8688 bfd_boolean ok_dest
;
8689 struct ppc_link_hash_entry
*hash
;
8690 struct ppc_link_hash_entry
*fdh
;
8691 struct elf_link_hash_entry
*h
;
8692 Elf_Internal_Sym
*sym
;
8694 const asection
*id_sec
;
8697 r_type
= ELF64_R_TYPE (irela
->r_info
);
8698 r_indx
= ELF64_R_SYM (irela
->r_info
);
8700 if (r_type
>= R_PPC64_max
)
8702 bfd_set_error (bfd_error_bad_value
);
8703 goto error_ret_free_internal
;
8706 /* Only look for stubs on branch instructions. */
8707 if (r_type
!= R_PPC64_REL24
8708 && r_type
!= R_PPC64_REL14
8709 && r_type
!= R_PPC64_REL14_BRTAKEN
8710 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8713 /* Now determine the call target, its name, value,
8715 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8717 goto error_ret_free_internal
;
8718 hash
= (struct ppc_link_hash_entry
*) h
;
8724 sym_value
= sym
->st_value
;
8730 /* Recognise an old ABI func code entry sym, and
8731 use the func descriptor sym instead. */
8732 if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
8733 && hash
->elf
.root
.root
.string
[0] == '.'
8734 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
8736 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
8737 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8739 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8740 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8741 if (sym_sec
->output_section
!= NULL
)
8747 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8748 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8750 sym_value
= hash
->elf
.root
.u
.def
.value
;
8751 if (sym_sec
->output_section
!= NULL
)
8754 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8756 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8760 bfd_set_error (bfd_error_bad_value
);
8761 goto error_ret_free_internal
;
8768 sym_value
+= irela
->r_addend
;
8769 destination
= (sym_value
8770 + sym_sec
->output_offset
8771 + sym_sec
->output_section
->vma
);
8775 opd_adjust
= get_opd_info (sym_sec
);
8776 if (opd_adjust
!= NULL
)
8782 long adjust
= opd_adjust
[sym_value
/ 8];
8785 sym_value
+= adjust
;
8787 dest
= opd_entry_value (sym_sec
, sym_value
,
8788 &code_sec
, &sym_value
);
8789 if (dest
!= (bfd_vma
) -1)
8794 /* Fixup old ABI sym to point at code
8796 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
8797 hash
->elf
.root
.u
.def
.section
= code_sec
;
8798 hash
->elf
.root
.u
.def
.value
= sym_value
;
8803 /* Determine what (if any) linker stub is needed. */
8804 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
8807 if (stub_type
!= ppc_stub_plt_call
)
8809 /* Check whether we need a TOC adjusting stub.
8810 Since the linker pastes together pieces from
8811 different object files when creating the
8812 _init and _fini functions, it may be that a
8813 call to what looks like a local sym is in
8814 fact a call needing a TOC adjustment. */
8815 if (code_sec
!= NULL
8816 && code_sec
->output_section
!= NULL
8817 && (htab
->stub_group
[code_sec
->id
].toc_off
8818 != htab
->stub_group
[section
->id
].toc_off
)
8819 && (code_sec
->has_toc_reloc
8820 || code_sec
->makes_toc_func_call
))
8821 stub_type
= ppc_stub_long_branch_r2off
;
8824 if (stub_type
== ppc_stub_none
)
8827 /* __tls_get_addr calls might be eliminated. */
8828 if (stub_type
!= ppc_stub_plt_call
8830 && (hash
== htab
->tls_get_addr
8831 || hash
== htab
->tls_get_addr_fd
)
8832 && section
->has_tls_reloc
8833 && irela
!= internal_relocs
)
8838 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
8839 irela
- 1, input_bfd
))
8840 goto error_ret_free_internal
;
8845 /* Support for grouping stub sections. */
8846 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
8848 /* Get the name of this stub. */
8849 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
8851 goto error_ret_free_internal
;
8853 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
8854 stub_name
, FALSE
, FALSE
);
8855 if (stub_entry
!= NULL
)
8857 /* The proper stub has already been created. */
8862 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
8863 if (stub_entry
== NULL
)
8866 error_ret_free_internal
:
8867 if (elf_section_data (section
)->relocs
== NULL
)
8868 free (internal_relocs
);
8869 error_ret_free_local
:
8870 if (local_syms
!= NULL
8871 && (symtab_hdr
->contents
8872 != (unsigned char *) local_syms
))
8877 stub_entry
->stub_type
= stub_type
;
8878 stub_entry
->target_value
= sym_value
;
8879 stub_entry
->target_section
= code_sec
;
8880 stub_entry
->h
= hash
;
8881 stub_entry
->addend
= irela
->r_addend
;
8883 if (stub_entry
->h
!= NULL
)
8884 htab
->stub_globals
+= 1;
8886 stub_changed
= TRUE
;
8889 /* We're done with the internal relocs, free them. */
8890 if (elf_section_data (section
)->relocs
!= internal_relocs
)
8891 free (internal_relocs
);
8894 if (local_syms
!= NULL
8895 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8897 if (!info
->keep_memory
)
8900 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8907 /* OK, we've added some stubs. Find out the new size of the
8909 for (stub_sec
= htab
->stub_bfd
->sections
;
8911 stub_sec
= stub_sec
->next
)
8912 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8915 stub_sec
->reloc_count
= 0;
8918 htab
->brlt
->size
= 0;
8919 if (htab
->relbrlt
!= NULL
)
8920 htab
->relbrlt
->size
= 0;
8922 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
8924 /* Ask the linker to do its stuff. */
8925 (*htab
->layout_sections_again
) ();
8928 /* It would be nice to strip .branch_lt from the output if the
8929 section is empty, but it's too late. If we strip sections here,
8930 the dynamic symbol table is corrupted since the section symbol
8931 for the stripped section isn't written. */
8936 /* Called after we have determined section placement. If sections
8937 move, we'll be called again. Provide a value for TOCstart. */
8940 ppc64_elf_toc (bfd
*obfd
)
8945 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8946 order. The TOC starts where the first of these sections starts. */
8947 s
= bfd_get_section_by_name (obfd
, ".got");
8949 s
= bfd_get_section_by_name (obfd
, ".toc");
8951 s
= bfd_get_section_by_name (obfd
, ".tocbss");
8953 s
= bfd_get_section_by_name (obfd
, ".plt");
8956 /* This may happen for
8957 o references to TOC base (SYM@toc / TOC[tc0]) without a
8960 o --gc-sections and empty TOC sections
8962 FIXME: Warn user? */
8964 /* Look for a likely section. We probably won't even be
8966 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8967 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
8968 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8971 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8972 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
8973 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8976 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8977 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
8980 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8981 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
8987 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
8992 /* Build all the stubs associated with the current output file.
8993 The stubs are kept in a hash table attached to the main linker
8994 hash table. This function is called via gldelf64ppc_finish. */
8997 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
8998 struct bfd_link_info
*info
,
9001 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9004 int stub_sec_count
= 0;
9006 htab
->emit_stub_syms
= emit_stub_syms
;
9008 /* Allocate memory to hold the linker stubs. */
9009 for (stub_sec
= htab
->stub_bfd
->sections
;
9011 stub_sec
= stub_sec
->next
)
9012 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9013 && stub_sec
->size
!= 0)
9015 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9016 if (stub_sec
->contents
== NULL
)
9018 /* We want to check that built size is the same as calculated
9019 size. rawsize is a convenient location to use. */
9020 stub_sec
->rawsize
= stub_sec
->size
;
9024 if (htab
->plt
!= NULL
)
9029 /* Build the .glink plt call stub. */
9030 plt0
= (htab
->plt
->output_section
->vma
9031 + htab
->plt
->output_offset
9032 - (htab
->glink
->output_section
->vma
9033 + htab
->glink
->output_offset
9034 + GLINK_CALL_STUB_SIZE
));
9035 if (plt0
+ 0x80008000 > 0xffffffff)
9037 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
9038 bfd_set_error (bfd_error_bad_value
);
9042 if (htab
->emit_stub_syms
)
9044 struct elf_link_hash_entry
*h
;
9045 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9048 if (h
->root
.type
== bfd_link_hash_new
)
9050 h
->root
.type
= bfd_link_hash_defined
;
9051 h
->root
.u
.def
.section
= htab
->glink
;
9052 h
->root
.u
.def
.value
= 0;
9055 h
->ref_regular_nonweak
= 1;
9056 h
->forced_local
= 1;
9060 p
= htab
->glink
->contents
;
9061 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
9063 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
9065 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
9067 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9069 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
9071 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
9073 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
9075 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9077 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
9079 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
9081 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
9083 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
9085 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9087 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9089 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9091 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9094 /* Build the .glink lazy link call stubs. */
9096 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9100 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9105 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9107 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9110 bfd_put_32 (htab
->glink
->owner
,
9111 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
9115 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9118 if (htab
->brlt
->size
!= 0)
9120 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9122 if (htab
->brlt
->contents
== NULL
)
9125 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9127 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9128 htab
->relbrlt
->size
);
9129 if (htab
->relbrlt
->contents
== NULL
)
9133 /* Build the stubs as directed by the stub hash table. */
9134 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9136 for (stub_sec
= htab
->stub_bfd
->sections
;
9138 stub_sec
= stub_sec
->next
)
9139 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9141 stub_sec_count
+= 1;
9142 if (stub_sec
->rawsize
!= stub_sec
->size
)
9146 if (stub_sec
!= NULL
9147 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9149 htab
->stub_error
= TRUE
;
9150 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9153 if (htab
->stub_error
)
9158 *stats
= bfd_malloc (500);
9162 sprintf (*stats
, _("linker stubs in %u group%s\n"
9165 " long branch %lu\n"
9166 " long toc adj %lu\n"
9169 stub_sec_count
== 1 ? "" : "s",
9170 htab
->stub_count
[ppc_stub_long_branch
- 1],
9171 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9172 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9173 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9174 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9179 /* This function undoes the changes made by add_symbol_adjust. */
9182 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9184 struct ppc_link_hash_entry
*eh
;
9186 if (h
->root
.type
== bfd_link_hash_indirect
)
9189 if (h
->root
.type
== bfd_link_hash_warning
)
9190 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9192 eh
= (struct ppc_link_hash_entry
*) h
;
9193 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9196 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9201 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9203 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9204 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9207 /* The RELOCATE_SECTION function is called by the ELF backend linker
9208 to handle the relocations for a section.
9210 The relocs are always passed as Rela structures; if the section
9211 actually uses Rel structures, the r_addend field will always be
9214 This function is responsible for adjust the section contents as
9215 necessary, and (if using Rela relocs and generating a
9216 relocatable output file) adjusting the reloc addend as
9219 This function does not have to worry about setting the reloc
9220 address or the reloc symbol index.
9222 LOCAL_SYMS is a pointer to the swapped in local symbols.
9224 LOCAL_SECTIONS is an array giving the section in the input file
9225 corresponding to the st_shndx field of each local symbol.
9227 The global hash table entry for the global symbols can be found
9228 via elf_sym_hashes (input_bfd).
9230 When generating relocatable output, this function must handle
9231 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9232 going to be the section symbol corresponding to the output
9233 section, which means that the addend must be adjusted
9237 ppc64_elf_relocate_section (bfd
*output_bfd
,
9238 struct bfd_link_info
*info
,
9240 asection
*input_section
,
9242 Elf_Internal_Rela
*relocs
,
9243 Elf_Internal_Sym
*local_syms
,
9244 asection
**local_sections
)
9246 struct ppc_link_hash_table
*htab
;
9247 Elf_Internal_Shdr
*symtab_hdr
;
9248 struct elf_link_hash_entry
**sym_hashes
;
9249 Elf_Internal_Rela
*rel
;
9250 Elf_Internal_Rela
*relend
;
9251 Elf_Internal_Rela outrel
;
9253 struct got_entry
**local_got_ents
;
9255 bfd_boolean ret
= TRUE
;
9257 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9258 bfd_boolean is_power4
= FALSE
;
9260 if (info
->relocatable
)
9263 /* Initialize howto table if needed. */
9264 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9267 htab
= ppc_hash_table (info
);
9269 /* Don't relocate stub sections. */
9270 if (input_section
->owner
== htab
->stub_bfd
)
9273 local_got_ents
= elf_local_got_ents (input_bfd
);
9274 TOCstart
= elf_gp (output_bfd
);
9275 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9276 sym_hashes
= elf_sym_hashes (input_bfd
);
9277 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
9280 relend
= relocs
+ input_section
->reloc_count
;
9281 for (; rel
< relend
; rel
++)
9283 enum elf_ppc64_reloc_type r_type
;
9285 bfd_reloc_status_type r
;
9286 Elf_Internal_Sym
*sym
;
9288 struct elf_link_hash_entry
*h_elf
;
9289 struct ppc_link_hash_entry
*h
;
9290 struct ppc_link_hash_entry
*fdh
;
9291 const char *sym_name
;
9292 unsigned long r_symndx
, toc_symndx
;
9293 char tls_mask
, tls_gd
, tls_type
;
9296 bfd_boolean unresolved_reloc
;
9298 unsigned long insn
, mask
;
9299 struct ppc_stub_hash_entry
*stub_entry
;
9300 bfd_vma max_br_offset
;
9303 r_type
= ELF64_R_TYPE (rel
->r_info
);
9304 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9306 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9307 symbol of the previous ADDR64 reloc. The symbol gives us the
9308 proper TOC base to use. */
9309 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9311 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9313 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9319 unresolved_reloc
= FALSE
;
9322 if (r_symndx
< symtab_hdr
->sh_info
)
9324 /* It's a local symbol. */
9327 sym
= local_syms
+ r_symndx
;
9328 sec
= local_sections
[r_symndx
];
9329 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
);
9330 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9331 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9332 opd_adjust
= get_opd_info (sec
);
9333 if (opd_adjust
!= NULL
)
9335 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9339 relocation
+= adjust
;
9344 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9345 r_symndx
, symtab_hdr
, sym_hashes
,
9346 h_elf
, sec
, relocation
,
9347 unresolved_reloc
, warned
);
9348 sym_name
= h_elf
->root
.root
.string
;
9349 sym_type
= h_elf
->type
;
9351 h
= (struct ppc_link_hash_entry
*) h_elf
;
9353 /* TLS optimizations. Replace instruction sequences and relocs
9354 based on information we collected in tls_optimize. We edit
9355 RELOCS so that --emit-relocs will output something sensible
9356 for the final instruction stream. */
9360 if (IS_PPC64_TLS_RELOC (r_type
))
9363 tls_mask
= h
->tls_mask
;
9364 else if (local_got_ents
!= NULL
)
9367 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9368 tls_mask
= lgot_masks
[r_symndx
];
9370 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9372 /* Check for toc tls entries. */
9375 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9380 tls_mask
= *toc_tls
;
9384 /* Check that tls relocs are used with tls syms, and non-tls
9385 relocs are used with non-tls syms. */
9387 && r_type
!= R_PPC64_NONE
9389 || h
->elf
.root
.type
== bfd_link_hash_defined
9390 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9391 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9393 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9394 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9397 (*_bfd_error_handler
)
9398 (sym_type
== STT_TLS
9399 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9400 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9403 (long) rel
->r_offset
,
9404 ppc64_elf_howto_table
[r_type
]->name
,
9408 /* Ensure reloc mapping code below stays sane. */
9409 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
9410 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
9411 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
9412 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
9413 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
9414 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
9415 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
9416 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
9417 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
9418 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
9427 case R_PPC64_TOC16_LO
:
9428 case R_PPC64_TOC16_DS
:
9429 case R_PPC64_TOC16_LO_DS
:
9431 /* Check for toc tls entries. */
9435 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9442 tls_mask
= *toc_tls
;
9443 if (r_type
== R_PPC64_TOC16_DS
9444 || r_type
== R_PPC64_TOC16_LO_DS
)
9447 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
9452 /* If we found a GD reloc pair, then we might be
9453 doing a GD->IE transition. */
9456 tls_gd
= TLS_TPRELGD
;
9457 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9458 goto tls_get_addr_check
;
9460 else if (retval
== 3)
9462 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9463 goto tls_get_addr_check
;
9470 case R_PPC64_GOT_TPREL16_DS
:
9471 case R_PPC64_GOT_TPREL16_LO_DS
:
9473 && (tls_mask
& TLS_TPREL
) == 0)
9476 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
9478 insn
|= 0x3c0d0000; /* addis 0,13,0 */
9479 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
9480 r_type
= R_PPC64_TPREL16_HA
;
9481 if (toc_symndx
!= 0)
9483 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9484 /* We changed the symbol. Start over in order to
9485 get h, sym, sec etc. right. */
9490 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9496 && (tls_mask
& TLS_TPREL
) == 0)
9499 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9500 if ((insn
& ((0x3f << 26) | (31 << 11)))
9501 == ((31 << 26) | (13 << 11)))
9502 rtra
= insn
& ((1 << 26) - (1 << 16));
9503 else if ((insn
& ((0x3f << 26) | (31 << 16)))
9504 == ((31 << 26) | (13 << 16)))
9505 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
9508 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
9511 else if ((insn
& (31 << 1)) == 23 << 1
9512 && ((insn
& (31 << 6)) < 14 << 6
9513 || ((insn
& (31 << 6)) >= 16 << 6
9514 && (insn
& (31 << 6)) < 24 << 6)))
9515 /* load and store indexed -> dform. */
9516 insn
= (32 | ((insn
>> 6) & 31)) << 26;
9517 else if ((insn
& (31 << 1)) == 21 << 1
9518 && (insn
& (0x1a << 6)) == 0)
9519 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9520 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
9521 | ((insn
>> 6) & 1));
9522 else if ((insn
& (31 << 1)) == 21 << 1
9523 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
9525 insn
= (58 << 26) | 2;
9529 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9530 /* Was PPC64_TLS which sits on insn boundary, now
9531 PPC64_TPREL16_LO which is at insn+2. */
9533 r_type
= R_PPC64_TPREL16_LO
;
9534 if (toc_symndx
!= 0)
9536 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9537 /* We changed the symbol. Start over in order to
9538 get h, sym, sec etc. right. */
9543 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9547 case R_PPC64_GOT_TLSGD16_HI
:
9548 case R_PPC64_GOT_TLSGD16_HA
:
9549 tls_gd
= TLS_TPRELGD
;
9550 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9554 case R_PPC64_GOT_TLSLD16_HI
:
9555 case R_PPC64_GOT_TLSLD16_HA
:
9556 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9559 if ((tls_mask
& tls_gd
) != 0)
9560 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9561 + R_PPC64_GOT_TPREL16_DS
);
9564 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9566 r_type
= R_PPC64_NONE
;
9568 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9572 case R_PPC64_GOT_TLSGD16
:
9573 case R_PPC64_GOT_TLSGD16_LO
:
9574 tls_gd
= TLS_TPRELGD
;
9575 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9576 goto tls_get_addr_check
;
9579 case R_PPC64_GOT_TLSLD16
:
9580 case R_PPC64_GOT_TLSLD16_LO
:
9581 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9584 if (rel
+ 1 < relend
)
9586 enum elf_ppc64_reloc_type r_type2
;
9587 unsigned long r_symndx2
;
9588 struct elf_link_hash_entry
*h2
;
9589 bfd_vma insn1
, insn2
, insn3
;
9592 /* The next instruction should be a call to
9593 __tls_get_addr. Peek at the reloc to be sure. */
9594 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
9595 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
9596 if (r_symndx2
< symtab_hdr
->sh_info
9597 || (r_type2
!= R_PPC64_REL14
9598 && r_type2
!= R_PPC64_REL14_BRTAKEN
9599 && r_type2
!= R_PPC64_REL14_BRNTAKEN
9600 && r_type2
!= R_PPC64_REL24
))
9603 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
9604 while (h2
->root
.type
== bfd_link_hash_indirect
9605 || h2
->root
.type
== bfd_link_hash_warning
)
9606 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
9607 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
9608 && h2
!= &htab
->tls_get_addr_fd
->elf
))
9611 /* OK, it checks out. Replace the call. */
9612 offset
= rel
[1].r_offset
;
9613 insn1
= bfd_get_32 (output_bfd
,
9614 contents
+ rel
->r_offset
- 2);
9615 insn3
= bfd_get_32 (output_bfd
,
9616 contents
+ offset
+ 4);
9617 if ((tls_mask
& tls_gd
) != 0)
9620 insn1
&= (1 << 26) - (1 << 2);
9621 insn1
|= 58 << 26; /* ld */
9622 insn2
= 0x7c636a14; /* add 3,3,13 */
9623 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
9624 if ((tls_mask
& TLS_EXPLICIT
) == 0)
9625 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9626 + R_PPC64_GOT_TPREL16_DS
);
9628 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
9629 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9634 insn1
= 0x3c6d0000; /* addis 3,13,0 */
9635 insn2
= 0x38630000; /* addi 3,3,0 */
9638 /* Was an LD reloc. */
9640 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9641 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9643 else if (toc_symndx
!= 0)
9644 r_symndx
= toc_symndx
;
9645 r_type
= R_PPC64_TPREL16_HA
;
9646 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9647 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
9648 R_PPC64_TPREL16_LO
);
9649 rel
[1].r_offset
+= 2;
9652 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
9656 rel
[1].r_offset
+= 4;
9658 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
9659 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
9660 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
9661 if (tls_gd
== 0 || toc_symndx
!= 0)
9663 /* We changed the symbol. Start over in order
9664 to get h, sym, sec etc. right. */
9672 case R_PPC64_DTPMOD64
:
9673 if (rel
+ 1 < relend
9674 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
9675 && rel
[1].r_offset
== rel
->r_offset
+ 8)
9677 if ((tls_mask
& TLS_GD
) == 0)
9679 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
9680 if ((tls_mask
& TLS_TPRELGD
) != 0)
9681 r_type
= R_PPC64_TPREL64
;
9684 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9685 r_type
= R_PPC64_NONE
;
9687 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9692 if ((tls_mask
& TLS_LD
) == 0)
9694 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9695 r_type
= R_PPC64_NONE
;
9696 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9701 case R_PPC64_TPREL64
:
9702 if ((tls_mask
& TLS_TPREL
) == 0)
9704 r_type
= R_PPC64_NONE
;
9705 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9710 /* Handle other relocations that tweak non-addend part of insn. */
9712 max_br_offset
= 1 << 25;
9713 addend
= rel
->r_addend
;
9719 /* Branch taken prediction relocations. */
9720 case R_PPC64_ADDR14_BRTAKEN
:
9721 case R_PPC64_REL14_BRTAKEN
:
9722 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9725 /* Branch not taken prediction relocations. */
9726 case R_PPC64_ADDR14_BRNTAKEN
:
9727 case R_PPC64_REL14_BRNTAKEN
:
9728 insn
|= bfd_get_32 (output_bfd
,
9729 contents
+ rel
->r_offset
) & ~(0x01 << 21);
9733 max_br_offset
= 1 << 15;
9737 /* Calls to functions with a different TOC, such as calls to
9738 shared objects, need to alter the TOC pointer. This is
9739 done using a linkage stub. A REL24 branching to these
9740 linkage stubs needs to be followed by a nop, as the nop
9741 will be replaced with an instruction to restore the TOC
9746 && (((fdh
= h
->oh
) != NULL
9747 && fdh
->elf
.plt
.plist
!= NULL
)
9748 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
9750 && sec
->output_section
!= NULL
9751 && sec
->id
<= htab
->top_id
9752 && (htab
->stub_group
[sec
->id
].toc_off
9753 != htab
->stub_group
[input_section
->id
].toc_off
)))
9754 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9756 && (stub_entry
->stub_type
== ppc_stub_plt_call
9757 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9758 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9760 bfd_boolean can_plt_call
= FALSE
;
9762 if (rel
->r_offset
+ 8 <= input_section
->size
)
9765 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
9767 || nop
== CROR_151515
|| nop
== CROR_313131
)
9769 bfd_put_32 (input_bfd
, LD_R2_40R1
,
9770 contents
+ rel
->r_offset
+ 4);
9771 can_plt_call
= TRUE
;
9777 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9779 /* If this is a plain branch rather than a branch
9780 and link, don't require a nop. */
9782 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9784 can_plt_call
= TRUE
;
9787 && strcmp (h
->elf
.root
.root
.string
,
9788 ".__libc_start_main") == 0)
9790 /* Allow crt1 branch to go via a toc adjusting stub. */
9791 can_plt_call
= TRUE
;
9795 if (strcmp (input_section
->output_section
->name
,
9797 || strcmp (input_section
->output_section
->name
,
9799 (*_bfd_error_handler
)
9800 (_("%B(%A+0x%lx): automatic multiple TOCs "
9801 "not supported using your crt files; "
9802 "recompile with -mminimal-toc or upgrade gcc"),
9805 (long) rel
->r_offset
);
9807 (*_bfd_error_handler
)
9808 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9809 "does not allow automatic multiple TOCs; "
9810 "recompile with -mminimal-toc or "
9811 "-fno-optimize-sibling-calls, "
9812 "or make `%s' extern"),
9815 (long) rel
->r_offset
,
9818 bfd_set_error (bfd_error_bad_value
);
9824 && stub_entry
->stub_type
== ppc_stub_plt_call
)
9825 unresolved_reloc
= FALSE
;
9828 if (stub_entry
== NULL
9829 && get_opd_info (sec
) != NULL
)
9831 /* The branch destination is the value of the opd entry. */
9832 bfd_vma off
= (relocation
- sec
->output_section
->vma
9833 - sec
->output_offset
+ rel
->r_addend
);
9834 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
9835 if (dest
!= (bfd_vma
) -1)
9842 /* If the branch is out of reach we ought to have a long
9844 from
= (rel
->r_offset
9845 + input_section
->output_offset
9846 + input_section
->output_section
->vma
);
9848 if (stub_entry
== NULL
9849 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
9850 >= 2 * max_br_offset
)
9851 && r_type
!= R_PPC64_ADDR14_BRTAKEN
9852 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
9853 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
9856 if (stub_entry
!= NULL
)
9858 /* Munge up the value and addend so that we call the stub
9859 rather than the procedure directly. */
9860 relocation
= (stub_entry
->stub_offset
9861 + stub_entry
->stub_sec
->output_offset
9862 + stub_entry
->stub_sec
->output_section
->vma
);
9870 /* Set 'a' bit. This is 0b00010 in BO field for branch
9871 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9872 for branch on CTR insns (BO == 1a00t or 1a01t). */
9873 if ((insn
& (0x14 << 21)) == (0x04 << 21))
9875 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
9882 /* Invert 'y' bit if not the default. */
9883 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
9887 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9890 /* NOP out calls to undefined weak functions.
9891 We can thus call a weak function without first
9892 checking whether the function is defined. */
9894 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9895 && r_type
== R_PPC64_REL24
9897 && rel
->r_addend
== 0)
9899 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9910 (*_bfd_error_handler
)
9911 (_("%B: unknown relocation type %d for symbol %s"),
9912 input_bfd
, (int) r_type
, sym_name
);
9914 bfd_set_error (bfd_error_bad_value
);
9920 case R_PPC64_GNU_VTINHERIT
:
9921 case R_PPC64_GNU_VTENTRY
:
9924 /* GOT16 relocations. Like an ADDR16 using the symbol's
9925 address in the GOT as relocation value instead of the
9926 symbol's value itself. Also, create a GOT entry for the
9927 symbol and put the symbol value there. */
9928 case R_PPC64_GOT_TLSGD16
:
9929 case R_PPC64_GOT_TLSGD16_LO
:
9930 case R_PPC64_GOT_TLSGD16_HI
:
9931 case R_PPC64_GOT_TLSGD16_HA
:
9932 tls_type
= TLS_TLS
| TLS_GD
;
9935 case R_PPC64_GOT_TLSLD16
:
9936 case R_PPC64_GOT_TLSLD16_LO
:
9937 case R_PPC64_GOT_TLSLD16_HI
:
9938 case R_PPC64_GOT_TLSLD16_HA
:
9939 tls_type
= TLS_TLS
| TLS_LD
;
9942 case R_PPC64_GOT_TPREL16_DS
:
9943 case R_PPC64_GOT_TPREL16_LO_DS
:
9944 case R_PPC64_GOT_TPREL16_HI
:
9945 case R_PPC64_GOT_TPREL16_HA
:
9946 tls_type
= TLS_TLS
| TLS_TPREL
;
9949 case R_PPC64_GOT_DTPREL16_DS
:
9950 case R_PPC64_GOT_DTPREL16_LO_DS
:
9951 case R_PPC64_GOT_DTPREL16_HI
:
9952 case R_PPC64_GOT_DTPREL16_HA
:
9953 tls_type
= TLS_TLS
| TLS_DTPREL
;
9957 case R_PPC64_GOT16_LO
:
9958 case R_PPC64_GOT16_HI
:
9959 case R_PPC64_GOT16_HA
:
9960 case R_PPC64_GOT16_DS
:
9961 case R_PPC64_GOT16_LO_DS
:
9964 /* Relocation is to the entry for this symbol in the global
9969 unsigned long indx
= 0;
9971 if (tls_type
== (TLS_TLS
| TLS_LD
)
9973 || !h
->elf
.def_dynamic
))
9974 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
9977 struct got_entry
*ent
;
9981 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
9982 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
9985 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
9986 /* This is actually a static link, or it is a
9987 -Bsymbolic link and the symbol is defined
9988 locally, or the symbol was forced to be local
9989 because of a version file. */
9993 indx
= h
->elf
.dynindx
;
9994 unresolved_reloc
= FALSE
;
9996 ent
= h
->elf
.got
.glist
;
10000 if (local_got_ents
== NULL
)
10002 ent
= local_got_ents
[r_symndx
];
10005 for (; ent
!= NULL
; ent
= ent
->next
)
10006 if (ent
->addend
== rel
->r_addend
10007 && ent
->owner
== input_bfd
10008 && ent
->tls_type
== tls_type
)
10012 offp
= &ent
->got
.offset
;
10015 got
= ppc64_elf_tdata (input_bfd
)->got
;
10019 /* The offset must always be a multiple of 8. We use the
10020 least significant bit to record whether we have already
10021 processed this entry. */
10023 if ((off
& 1) != 0)
10027 /* Generate relocs for the dynamic linker, except in
10028 the case of TLSLD where we'll use one entry per
10030 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10033 if ((info
->shared
|| indx
!= 0)
10035 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10036 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10038 outrel
.r_offset
= (got
->output_section
->vma
10039 + got
->output_offset
10041 outrel
.r_addend
= rel
->r_addend
;
10042 if (tls_type
& (TLS_LD
| TLS_GD
))
10044 outrel
.r_addend
= 0;
10045 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10046 if (tls_type
== (TLS_TLS
| TLS_GD
))
10048 loc
= relgot
->contents
;
10049 loc
+= (relgot
->reloc_count
++
10050 * sizeof (Elf64_External_Rela
));
10051 bfd_elf64_swap_reloca_out (output_bfd
,
10053 outrel
.r_offset
+= 8;
10054 outrel
.r_addend
= rel
->r_addend
;
10056 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10059 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10060 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10061 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10062 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10063 else if (indx
== 0)
10065 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10067 /* Write the .got section contents for the sake
10069 loc
= got
->contents
+ off
;
10070 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10074 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10076 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10078 outrel
.r_addend
+= relocation
;
10079 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10080 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10082 loc
= relgot
->contents
;
10083 loc
+= (relgot
->reloc_count
++
10084 * sizeof (Elf64_External_Rela
));
10085 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10088 /* Init the .got section contents here if we're not
10089 emitting a reloc. */
10092 relocation
+= rel
->r_addend
;
10093 if (tls_type
== (TLS_TLS
| TLS_LD
))
10095 else if (tls_type
!= 0)
10097 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10098 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10099 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10101 if (tls_type
== (TLS_TLS
| TLS_GD
))
10103 bfd_put_64 (output_bfd
, relocation
,
10104 got
->contents
+ off
+ 8);
10109 bfd_put_64 (output_bfd
, relocation
,
10110 got
->contents
+ off
);
10114 if (off
>= (bfd_vma
) -2)
10117 relocation
= got
->output_offset
+ off
;
10119 /* TOC base (r2) is TOC start plus 0x8000. */
10120 addend
= -TOC_BASE_OFF
;
10124 case R_PPC64_PLT16_HA
:
10125 case R_PPC64_PLT16_HI
:
10126 case R_PPC64_PLT16_LO
:
10127 case R_PPC64_PLT32
:
10128 case R_PPC64_PLT64
:
10129 /* Relocation is to the entry for this symbol in the
10130 procedure linkage table. */
10132 /* Resolve a PLT reloc against a local symbol directly,
10133 without using the procedure linkage table. */
10137 /* It's possible that we didn't make a PLT entry for this
10138 symbol. This happens when statically linking PIC code,
10139 or when using -Bsymbolic. Go find a match if there is a
10141 if (htab
->plt
!= NULL
)
10143 struct plt_entry
*ent
;
10144 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10145 if (ent
->addend
== rel
->r_addend
10146 && ent
->plt
.offset
!= (bfd_vma
) -1)
10148 relocation
= (htab
->plt
->output_section
->vma
10149 + htab
->plt
->output_offset
10150 + ent
->plt
.offset
);
10151 unresolved_reloc
= FALSE
;
10157 /* Relocation value is TOC base. */
10158 relocation
= TOCstart
;
10160 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10161 else if (unresolved_reloc
)
10163 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10164 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10166 unresolved_reloc
= TRUE
;
10169 /* TOC16 relocs. We want the offset relative to the TOC base,
10170 which is the address of the start of the TOC plus 0x8000.
10171 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10173 case R_PPC64_TOC16
:
10174 case R_PPC64_TOC16_LO
:
10175 case R_PPC64_TOC16_HI
:
10176 case R_PPC64_TOC16_DS
:
10177 case R_PPC64_TOC16_LO_DS
:
10178 case R_PPC64_TOC16_HA
:
10179 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10182 /* Relocate against the beginning of the section. */
10183 case R_PPC64_SECTOFF
:
10184 case R_PPC64_SECTOFF_LO
:
10185 case R_PPC64_SECTOFF_HI
:
10186 case R_PPC64_SECTOFF_DS
:
10187 case R_PPC64_SECTOFF_LO_DS
:
10188 case R_PPC64_SECTOFF_HA
:
10190 addend
-= sec
->output_section
->vma
;
10193 case R_PPC64_REL14
:
10194 case R_PPC64_REL14_BRNTAKEN
:
10195 case R_PPC64_REL14_BRTAKEN
:
10196 case R_PPC64_REL24
:
10199 case R_PPC64_TPREL16
:
10200 case R_PPC64_TPREL16_LO
:
10201 case R_PPC64_TPREL16_HI
:
10202 case R_PPC64_TPREL16_HA
:
10203 case R_PPC64_TPREL16_DS
:
10204 case R_PPC64_TPREL16_LO_DS
:
10205 case R_PPC64_TPREL16_HIGHER
:
10206 case R_PPC64_TPREL16_HIGHERA
:
10207 case R_PPC64_TPREL16_HIGHEST
:
10208 case R_PPC64_TPREL16_HIGHESTA
:
10209 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10211 /* The TPREL16 relocs shouldn't really be used in shared
10212 libs as they will result in DT_TEXTREL being set, but
10213 support them anyway. */
10217 case R_PPC64_DTPREL16
:
10218 case R_PPC64_DTPREL16_LO
:
10219 case R_PPC64_DTPREL16_HI
:
10220 case R_PPC64_DTPREL16_HA
:
10221 case R_PPC64_DTPREL16_DS
:
10222 case R_PPC64_DTPREL16_LO_DS
:
10223 case R_PPC64_DTPREL16_HIGHER
:
10224 case R_PPC64_DTPREL16_HIGHERA
:
10225 case R_PPC64_DTPREL16_HIGHEST
:
10226 case R_PPC64_DTPREL16_HIGHESTA
:
10227 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10230 case R_PPC64_DTPMOD64
:
10235 case R_PPC64_TPREL64
:
10236 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10239 case R_PPC64_DTPREL64
:
10240 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10243 /* Relocations that may need to be propagated if this is a
10245 case R_PPC64_REL30
:
10246 case R_PPC64_REL32
:
10247 case R_PPC64_REL64
:
10248 case R_PPC64_ADDR14
:
10249 case R_PPC64_ADDR14_BRNTAKEN
:
10250 case R_PPC64_ADDR14_BRTAKEN
:
10251 case R_PPC64_ADDR16
:
10252 case R_PPC64_ADDR16_DS
:
10253 case R_PPC64_ADDR16_HA
:
10254 case R_PPC64_ADDR16_HI
:
10255 case R_PPC64_ADDR16_HIGHER
:
10256 case R_PPC64_ADDR16_HIGHERA
:
10257 case R_PPC64_ADDR16_HIGHEST
:
10258 case R_PPC64_ADDR16_HIGHESTA
:
10259 case R_PPC64_ADDR16_LO
:
10260 case R_PPC64_ADDR16_LO_DS
:
10261 case R_PPC64_ADDR24
:
10262 case R_PPC64_ADDR32
:
10263 case R_PPC64_ADDR64
:
10264 case R_PPC64_UADDR16
:
10265 case R_PPC64_UADDR32
:
10266 case R_PPC64_UADDR64
:
10267 /* r_symndx will be zero only for relocs against symbols
10268 from removed linkonce sections, or sections discarded by
10269 a linker script. */
10276 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10279 if (NO_OPD_RELOCS
&& is_opd
)
10284 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10285 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10286 && (MUST_BE_DYN_RELOC (r_type
)
10287 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10288 || (ELIMINATE_COPY_RELOCS
10291 && h
->elf
.dynindx
!= -1
10292 && !h
->elf
.non_got_ref
10293 && h
->elf
.def_dynamic
10294 && !h
->elf
.def_regular
))
10296 Elf_Internal_Rela outrel
;
10297 bfd_boolean skip
, relocate
;
10302 /* When generating a dynamic object, these relocations
10303 are copied into the output file to be resolved at run
10309 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10310 input_section
, rel
->r_offset
);
10311 if (out_off
== (bfd_vma
) -1)
10313 else if (out_off
== (bfd_vma
) -2)
10314 skip
= TRUE
, relocate
= TRUE
;
10315 out_off
+= (input_section
->output_section
->vma
10316 + input_section
->output_offset
);
10317 outrel
.r_offset
= out_off
;
10318 outrel
.r_addend
= rel
->r_addend
;
10320 /* Optimize unaligned reloc use. */
10321 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10322 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10323 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10324 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10325 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10326 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10327 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10328 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10329 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10332 memset (&outrel
, 0, sizeof outrel
);
10333 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10335 && r_type
!= R_PPC64_TOC
)
10336 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10339 /* This symbol is local, or marked to become local,
10340 or this is an opd section reloc which must point
10341 at a local function. */
10342 outrel
.r_addend
+= relocation
;
10343 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10345 if (is_opd
&& h
!= NULL
)
10347 /* Lie about opd entries. This case occurs
10348 when building shared libraries and we
10349 reference a function in another shared
10350 lib. The same thing happens for a weak
10351 definition in an application that's
10352 overridden by a strong definition in a
10353 shared lib. (I believe this is a generic
10354 bug in binutils handling of weak syms.)
10355 In these cases we won't use the opd
10356 entry in this lib. */
10357 unresolved_reloc
= FALSE
;
10359 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10361 /* We need to relocate .opd contents for ld.so.
10362 Prelink also wants simple and consistent rules
10363 for relocs. This make all RELATIVE relocs have
10364 *r_offset equal to r_addend. */
10371 if (bfd_is_abs_section (sec
))
10373 else if (sec
== NULL
|| sec
->owner
== NULL
)
10375 bfd_set_error (bfd_error_bad_value
);
10382 osec
= sec
->output_section
;
10383 indx
= elf_section_data (osec
)->dynindx
;
10385 /* We are turning this relocation into one
10386 against a section symbol, so subtract out
10387 the output section's address but not the
10388 offset of the input section in the output
10390 outrel
.r_addend
-= osec
->vma
;
10393 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10397 sreloc
= elf_section_data (input_section
)->sreloc
;
10398 if (sreloc
== NULL
)
10401 loc
= sreloc
->contents
;
10402 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10403 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10405 /* If this reloc is against an external symbol, it will
10406 be computed at runtime, so there's no need to do
10407 anything now. However, for the sake of prelink ensure
10408 that the section contents are a known value. */
10411 unresolved_reloc
= FALSE
;
10412 /* The value chosen here is quite arbitrary as ld.so
10413 ignores section contents except for the special
10414 case of .opd where the contents might be accessed
10415 before relocation. Choose zero, as that won't
10416 cause reloc overflow. */
10419 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10420 to improve backward compatibility with older
10422 if (r_type
== R_PPC64_ADDR64
)
10423 addend
= outrel
.r_addend
;
10424 /* Adjust pc_relative relocs to have zero in *r_offset. */
10425 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
10426 addend
= (input_section
->output_section
->vma
10427 + input_section
->output_offset
10434 case R_PPC64_GLOB_DAT
:
10435 case R_PPC64_JMP_SLOT
:
10436 case R_PPC64_RELATIVE
:
10437 /* We shouldn't ever see these dynamic relocs in relocatable
10439 /* Fall through. */
10441 case R_PPC64_PLTGOT16
:
10442 case R_PPC64_PLTGOT16_DS
:
10443 case R_PPC64_PLTGOT16_HA
:
10444 case R_PPC64_PLTGOT16_HI
:
10445 case R_PPC64_PLTGOT16_LO
:
10446 case R_PPC64_PLTGOT16_LO_DS
:
10447 case R_PPC64_PLTREL32
:
10448 case R_PPC64_PLTREL64
:
10449 /* These ones haven't been implemented yet. */
10451 (*_bfd_error_handler
)
10452 (_("%B: relocation %s is not supported for symbol %s."),
10454 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
10456 bfd_set_error (bfd_error_invalid_operation
);
10461 /* Do any further special processing. */
10467 case R_PPC64_ADDR16_HA
:
10468 case R_PPC64_ADDR16_HIGHERA
:
10469 case R_PPC64_ADDR16_HIGHESTA
:
10470 case R_PPC64_GOT16_HA
:
10471 case R_PPC64_PLTGOT16_HA
:
10472 case R_PPC64_PLT16_HA
:
10473 case R_PPC64_TOC16_HA
:
10474 case R_PPC64_SECTOFF_HA
:
10475 case R_PPC64_TPREL16_HA
:
10476 case R_PPC64_DTPREL16_HA
:
10477 case R_PPC64_GOT_TLSGD16_HA
:
10478 case R_PPC64_GOT_TLSLD16_HA
:
10479 case R_PPC64_GOT_TPREL16_HA
:
10480 case R_PPC64_GOT_DTPREL16_HA
:
10481 case R_PPC64_TPREL16_HIGHER
:
10482 case R_PPC64_TPREL16_HIGHERA
:
10483 case R_PPC64_TPREL16_HIGHEST
:
10484 case R_PPC64_TPREL16_HIGHESTA
:
10485 case R_PPC64_DTPREL16_HIGHER
:
10486 case R_PPC64_DTPREL16_HIGHERA
:
10487 case R_PPC64_DTPREL16_HIGHEST
:
10488 case R_PPC64_DTPREL16_HIGHESTA
:
10489 /* It's just possible that this symbol is a weak symbol
10490 that's not actually defined anywhere. In that case,
10491 'sec' would be NULL, and we should leave the symbol
10492 alone (it will be set to zero elsewhere in the link). */
10494 /* Add 0x10000 if sign bit in 0:15 is set.
10495 Bits 0:15 are not used. */
10499 case R_PPC64_ADDR16_DS
:
10500 case R_PPC64_ADDR16_LO_DS
:
10501 case R_PPC64_GOT16_DS
:
10502 case R_PPC64_GOT16_LO_DS
:
10503 case R_PPC64_PLT16_LO_DS
:
10504 case R_PPC64_SECTOFF_DS
:
10505 case R_PPC64_SECTOFF_LO_DS
:
10506 case R_PPC64_TOC16_DS
:
10507 case R_PPC64_TOC16_LO_DS
:
10508 case R_PPC64_PLTGOT16_DS
:
10509 case R_PPC64_PLTGOT16_LO_DS
:
10510 case R_PPC64_GOT_TPREL16_DS
:
10511 case R_PPC64_GOT_TPREL16_LO_DS
:
10512 case R_PPC64_GOT_DTPREL16_DS
:
10513 case R_PPC64_GOT_DTPREL16_LO_DS
:
10514 case R_PPC64_TPREL16_DS
:
10515 case R_PPC64_TPREL16_LO_DS
:
10516 case R_PPC64_DTPREL16_DS
:
10517 case R_PPC64_DTPREL16_LO_DS
:
10518 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
10520 /* If this reloc is against an lq insn, then the value must be
10521 a multiple of 16. This is somewhat of a hack, but the
10522 "correct" way to do this by defining _DQ forms of all the
10523 _DS relocs bloats all reloc switches in this file. It
10524 doesn't seem to make much sense to use any of these relocs
10525 in data, so testing the insn should be safe. */
10526 if ((insn
& (0x3f << 26)) == (56u << 26))
10528 if (((relocation
+ addend
) & mask
) != 0)
10530 (*_bfd_error_handler
)
10531 (_("%B: error: relocation %s not a multiple of %d"),
10533 ppc64_elf_howto_table
[r_type
]->name
,
10535 bfd_set_error (bfd_error_bad_value
);
10542 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10543 because such sections are not SEC_ALLOC and thus ld.so will
10544 not process them. */
10545 if (unresolved_reloc
10546 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
10547 && h
->elf
.def_dynamic
))
10549 (*_bfd_error_handler
)
10550 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10553 (long) rel
->r_offset
,
10554 ppc64_elf_howto_table
[(int) r_type
]->name
,
10555 h
->elf
.root
.root
.string
);
10559 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
10567 if (r
!= bfd_reloc_ok
)
10569 if (sym_name
== NULL
)
10570 sym_name
= "(null)";
10571 if (r
== bfd_reloc_overflow
)
10576 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10577 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
10579 /* Assume this is a call protected by other code that
10580 detects the symbol is undefined. If this is the case,
10581 we can safely ignore the overflow. If not, the
10582 program is hosed anyway, and a little warning isn't
10588 if (!((*info
->callbacks
->reloc_overflow
)
10589 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
10590 ppc64_elf_howto_table
[r_type
]->name
,
10591 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
10596 (*_bfd_error_handler
)
10597 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10600 (long) rel
->r_offset
,
10601 ppc64_elf_howto_table
[r_type
]->name
,
10609 /* If we're emitting relocations, then shortly after this function
10610 returns, reloc offsets and addends for this section will be
10611 adjusted. Worse, reloc symbol indices will be for the output
10612 file rather than the input. Save a copy of the relocs for
10613 opd_entry_value. */
10614 if (is_opd
&& info
->emitrelocations
)
10617 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
10618 rel
= bfd_alloc (input_bfd
, amt
);
10619 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
10620 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
10623 memcpy (rel
, relocs
, amt
);
10628 /* Adjust the value of any local symbols in opd sections. */
10631 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
10632 const char *name ATTRIBUTE_UNUSED
,
10633 Elf_Internal_Sym
*elfsym
,
10634 asection
*input_sec
,
10635 struct elf_link_hash_entry
*h
)
10637 long *opd_adjust
, adjust
;
10643 opd_adjust
= get_opd_info (input_sec
);
10644 if (opd_adjust
== NULL
)
10647 value
= elfsym
->st_value
- input_sec
->output_offset
;
10648 if (!info
->relocatable
)
10649 value
-= input_sec
->output_section
->vma
;
10651 adjust
= opd_adjust
[value
/ 8];
10653 elfsym
->st_value
= 0;
10655 elfsym
->st_value
+= adjust
;
10659 /* Finish up dynamic symbol handling. We set the contents of various
10660 dynamic sections here. */
10663 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10664 struct bfd_link_info
*info
,
10665 struct elf_link_hash_entry
*h
,
10666 Elf_Internal_Sym
*sym
)
10668 struct ppc_link_hash_table
*htab
;
10670 struct plt_entry
*ent
;
10671 Elf_Internal_Rela rela
;
10674 htab
= ppc_hash_table (info
);
10675 dynobj
= htab
->elf
.dynobj
;
10677 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10678 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10680 /* This symbol has an entry in the procedure linkage
10681 table. Set it up. */
10683 if (htab
->plt
== NULL
10684 || htab
->relplt
== NULL
10685 || htab
->glink
== NULL
)
10688 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10689 fill in the PLT entry. */
10690 rela
.r_offset
= (htab
->plt
->output_section
->vma
10691 + htab
->plt
->output_offset
10692 + ent
->plt
.offset
);
10693 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
10694 rela
.r_addend
= ent
->addend
;
10696 loc
= htab
->relplt
->contents
;
10697 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
10698 * sizeof (Elf64_External_Rela
));
10699 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10704 Elf_Internal_Rela rela
;
10707 /* This symbol needs a copy reloc. Set it up. */
10709 if (h
->dynindx
== -1
10710 || (h
->root
.type
!= bfd_link_hash_defined
10711 && h
->root
.type
!= bfd_link_hash_defweak
)
10712 || htab
->relbss
== NULL
)
10715 rela
.r_offset
= (h
->root
.u
.def
.value
10716 + h
->root
.u
.def
.section
->output_section
->vma
10717 + h
->root
.u
.def
.section
->output_offset
);
10718 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
10720 loc
= htab
->relbss
->contents
;
10721 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10722 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10725 /* Mark some specially defined symbols as absolute. */
10726 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
10727 sym
->st_shndx
= SHN_ABS
;
10732 /* Used to decide how to sort relocs in an optimal manner for the
10733 dynamic linker, before writing them out. */
10735 static enum elf_reloc_type_class
10736 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
10738 enum elf_ppc64_reloc_type r_type
;
10740 r_type
= ELF64_R_TYPE (rela
->r_info
);
10743 case R_PPC64_RELATIVE
:
10744 return reloc_class_relative
;
10745 case R_PPC64_JMP_SLOT
:
10746 return reloc_class_plt
;
10748 return reloc_class_copy
;
10750 return reloc_class_normal
;
10754 /* Finish up the dynamic sections. */
10757 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
10758 struct bfd_link_info
*info
)
10760 struct ppc_link_hash_table
*htab
;
10764 htab
= ppc_hash_table (info
);
10765 dynobj
= htab
->elf
.dynobj
;
10766 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10768 if (htab
->elf
.dynamic_sections_created
)
10770 Elf64_External_Dyn
*dyncon
, *dynconend
;
10772 if (sdyn
== NULL
|| htab
->got
== NULL
)
10775 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
10776 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10777 for (; dyncon
< dynconend
; dyncon
++)
10779 Elf_Internal_Dyn dyn
;
10782 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10789 case DT_PPC64_GLINK
:
10791 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10792 /* We stupidly defined DT_PPC64_GLINK to be the start
10793 of glink rather than the first entry point, which is
10794 what ld.so needs, and now have a bigger stub to
10795 support automatic multiple TOCs. */
10796 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
10800 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10803 dyn
.d_un
.d_ptr
= s
->vma
;
10806 case DT_PPC64_OPDSZ
:
10807 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10810 dyn
.d_un
.d_val
= s
->size
;
10815 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10820 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10824 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10828 /* Don't count procedure linkage table relocs in the
10829 overall reloc count. */
10833 dyn
.d_un
.d_val
-= s
->size
;
10837 /* We may not be using the standard ELF linker script.
10838 If .rela.plt is the first .rela section, we adjust
10839 DT_RELA to not include it. */
10843 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
10845 dyn
.d_un
.d_ptr
+= s
->size
;
10849 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10853 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
10855 /* Fill in the first entry in the global offset table.
10856 We use it to hold the link-time TOCbase. */
10857 bfd_put_64 (output_bfd
,
10858 elf_gp (output_bfd
) + TOC_BASE_OFF
,
10859 htab
->got
->contents
);
10861 /* Set .got entry size. */
10862 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
10865 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
10867 /* Set .plt entry size. */
10868 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
10872 /* We need to handle writing out multiple GOT sections ourselves,
10873 since we didn't add them to DYNOBJ. We know dynobj is the first
10875 while ((dynobj
= dynobj
->link_next
) != NULL
)
10879 if (!is_ppc64_elf_target (dynobj
->xvec
))
10882 s
= ppc64_elf_tdata (dynobj
)->got
;
10885 && s
->output_section
!= bfd_abs_section_ptr
10886 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10887 s
->contents
, s
->output_offset
,
10890 s
= ppc64_elf_tdata (dynobj
)->relgot
;
10893 && s
->output_section
!= bfd_abs_section_ptr
10894 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10895 s
->contents
, s
->output_offset
,
10903 #include "elf64-target.h"