1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
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
;
2385 #define ppc64_elf_tdata(bfd) \
2386 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2388 #define ppc64_tlsld_got(bfd) \
2389 (&ppc64_elf_tdata (bfd)->tlsld_got)
2391 /* Override the generic function because we store some extras. */
2394 ppc64_elf_mkobject (bfd
*abfd
)
2396 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2397 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2398 if (abfd
->tdata
.any
== NULL
)
2403 /* Return 1 if target is one of ours. */
2406 is_ppc64_elf_target (const struct bfd_target
*targ
)
2408 extern const bfd_target bfd_elf64_powerpc_vec
;
2409 extern const bfd_target bfd_elf64_powerpcle_vec
;
2411 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2414 /* Fix bad default arch selected for a 64 bit input bfd when the
2415 default is 32 bit. */
2418 ppc64_elf_object_p (bfd
*abfd
)
2420 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2422 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2424 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2426 /* Relies on arch after 32 bit default being 64 bit default. */
2427 abfd
->arch_info
= abfd
->arch_info
->next
;
2428 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2434 /* Support for core dump NOTE sections. */
2437 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2439 size_t offset
, size
;
2441 if (note
->descsz
!= 504)
2445 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2448 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2454 /* Make a ".reg/999" section. */
2455 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2456 size
, note
->descpos
+ offset
);
2460 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2462 if (note
->descsz
!= 136)
2465 elf_tdata (abfd
)->core_program
2466 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2467 elf_tdata (abfd
)->core_command
2468 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2473 /* Merge backend specific data from an object file to the output
2474 object file when linking. */
2477 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2479 /* Check if we have the same endianess. */
2480 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2481 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2482 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2486 if (bfd_big_endian (ibfd
))
2487 msg
= _("%B: compiled for a big endian system "
2488 "and target is little endian");
2490 msg
= _("%B: compiled for a little endian system "
2491 "and target is big endian");
2493 (*_bfd_error_handler
) (msg
, ibfd
);
2495 bfd_set_error (bfd_error_wrong_format
);
2502 /* Add extra PPC sections. */
2504 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2506 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2507 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2508 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2509 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2510 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2511 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2512 { NULL
, 0, 0, 0, 0 }
2515 struct _ppc64_elf_section_data
2517 struct bfd_elf_section_data elf
;
2519 /* An array with one entry for each opd function descriptor. */
2522 /* Points to the function code section for local opd entries. */
2523 asection
**func_sec
;
2524 /* After editing .opd, adjust references to opd local syms. */
2528 /* An array for toc sections, indexed by offset/8.
2529 Specifies the relocation symbol index used at a given toc offset. */
2533 #define ppc64_elf_section_data(sec) \
2534 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2537 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2539 struct _ppc64_elf_section_data
*sdata
;
2540 bfd_size_type amt
= sizeof (*sdata
);
2542 sdata
= bfd_zalloc (abfd
, amt
);
2545 sec
->used_by_bfd
= sdata
;
2547 return _bfd_elf_new_section_hook (abfd
, sec
);
2551 get_opd_info (asection
* sec
)
2554 && ppc64_elf_section_data (sec
) != NULL
2555 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2556 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2560 /* Parameters for the qsort hook. */
2561 static asection
*synthetic_opd
;
2562 static bfd_boolean synthetic_relocatable
;
2564 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2567 compare_symbols (const void *ap
, const void *bp
)
2569 const asymbol
*a
= * (const asymbol
**) ap
;
2570 const asymbol
*b
= * (const asymbol
**) bp
;
2572 /* Section symbols first. */
2573 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2575 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2578 /* then .opd symbols. */
2579 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2581 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2584 /* then other code symbols. */
2585 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2586 == (SEC_CODE
| SEC_ALLOC
)
2587 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2588 != (SEC_CODE
| SEC_ALLOC
))
2591 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2592 != (SEC_CODE
| SEC_ALLOC
)
2593 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2594 == (SEC_CODE
| SEC_ALLOC
))
2597 if (synthetic_relocatable
)
2599 if (a
->section
->id
< b
->section
->id
)
2602 if (a
->section
->id
> b
->section
->id
)
2606 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2609 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2615 /* Search SYMS for a symbol of the given VALUE. */
2618 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2626 mid
= (lo
+ hi
) >> 1;
2627 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2629 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2639 mid
= (lo
+ hi
) >> 1;
2640 if (syms
[mid
]->section
->id
< id
)
2642 else if (syms
[mid
]->section
->id
> id
)
2644 else if (syms
[mid
]->value
< value
)
2646 else if (syms
[mid
]->value
> value
)
2655 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2659 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2660 long static_count
, asymbol
**static_syms
,
2661 long dyn_count
, asymbol
**dyn_syms
,
2668 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2670 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2675 opd
= bfd_get_section_by_name (abfd
, ".opd");
2679 symcount
= static_count
;
2681 symcount
+= dyn_count
;
2685 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2689 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2691 /* Use both symbol tables. */
2692 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2693 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2695 else if (!relocatable
&& static_count
== 0)
2696 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2698 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2700 synthetic_opd
= opd
;
2701 synthetic_relocatable
= relocatable
;
2702 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2704 if (!relocatable
&& symcount
> 1)
2707 /* Trim duplicate syms, since we may have merged the normal and
2708 dynamic symbols. Actually, we only care about syms that have
2709 different values, so trim any with the same value. */
2710 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2711 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2712 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2713 syms
[j
++] = syms
[i
];
2718 if (syms
[i
]->section
== opd
)
2722 for (; i
< symcount
; ++i
)
2723 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2724 != (SEC_CODE
| SEC_ALLOC
))
2725 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2729 for (; i
< symcount
; ++i
)
2730 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2734 for (; i
< symcount
; ++i
)
2735 if (syms
[i
]->section
!= opd
)
2739 for (; i
< symcount
; ++i
)
2740 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2741 != (SEC_CODE
| SEC_ALLOC
))
2746 if (opdsymend
== secsymend
)
2751 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2756 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2757 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2760 || ! (*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2764 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2768 while (r
< opd
->relocation
+ relcount
2769 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2772 if (r
== opd
->relocation
+ relcount
)
2775 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2778 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2781 sym
= *r
->sym_ptr_ptr
;
2782 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2783 sym
->section
->id
, sym
->value
+ r
->addend
))
2786 size
+= sizeof (asymbol
);
2787 size
+= strlen (syms
[i
]->name
) + 2;
2791 s
= *ret
= bfd_malloc (size
);
2798 names
= (char *) (s
+ count
);
2800 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2804 while (r
< opd
->relocation
+ relcount
2805 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2808 if (r
== opd
->relocation
+ relcount
)
2811 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2814 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2817 sym
= *r
->sym_ptr_ptr
;
2818 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2819 sym
->section
->id
, sym
->value
+ r
->addend
))
2824 s
->section
= sym
->section
;
2825 s
->value
= sym
->value
+ r
->addend
;
2828 len
= strlen (syms
[i
]->name
);
2829 memcpy (names
, syms
[i
]->name
, len
+ 1);
2840 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2844 free_contents_and_exit
:
2851 for (i
= secsymend
; i
< opdsymend
; ++i
)
2855 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2856 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2859 size
+= sizeof (asymbol
);
2860 size
+= strlen (syms
[i
]->name
) + 2;
2864 s
= *ret
= bfd_malloc (size
);
2868 goto free_contents_and_exit
;
2871 names
= (char *) (s
+ count
);
2873 for (i
= secsymend
; i
< opdsymend
; ++i
)
2877 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2878 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2882 asection
*sec
= abfd
->sections
;
2889 long mid
= (lo
+ hi
) >> 1;
2890 if (syms
[mid
]->section
->vma
< ent
)
2892 else if (syms
[mid
]->section
->vma
> ent
)
2896 sec
= syms
[mid
]->section
;
2901 if (lo
>= hi
&& lo
> codesecsym
)
2902 sec
= syms
[lo
- 1]->section
;
2904 for (; sec
!= NULL
; sec
= sec
->next
)
2908 if ((sec
->flags
& SEC_ALLOC
) == 0
2909 || (sec
->flags
& SEC_LOAD
) == 0)
2911 if ((sec
->flags
& SEC_CODE
) != 0)
2914 s
->value
= ent
- s
->section
->vma
;
2917 len
= strlen (syms
[i
]->name
);
2918 memcpy (names
, syms
[i
]->name
, len
+ 1);
2931 /* The following functions are specific to the ELF linker, while
2932 functions above are used generally. Those named ppc64_elf_* are
2933 called by the main ELF linker code. They appear in this file more
2934 or less in the order in which they are called. eg.
2935 ppc64_elf_check_relocs is called early in the link process,
2936 ppc64_elf_finish_dynamic_sections is one of the last functions
2939 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2940 functions have both a function code symbol and a function descriptor
2941 symbol. A call to foo in a relocatable object file looks like:
2948 The function definition in another object file might be:
2952 . .quad .TOC.@tocbase
2958 When the linker resolves the call during a static link, the branch
2959 unsurprisingly just goes to .foo and the .opd information is unused.
2960 If the function definition is in a shared library, things are a little
2961 different: The call goes via a plt call stub, the opd information gets
2962 copied to the plt, and the linker patches the nop.
2970 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2971 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2972 . std 2,40(1) # this is the general idea
2980 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2982 The "reloc ()" notation is supposed to indicate that the linker emits
2983 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2986 What are the difficulties here? Well, firstly, the relocations
2987 examined by the linker in check_relocs are against the function code
2988 sym .foo, while the dynamic relocation in the plt is emitted against
2989 the function descriptor symbol, foo. Somewhere along the line, we need
2990 to carefully copy dynamic link information from one symbol to the other.
2991 Secondly, the generic part of the elf linker will make .foo a dynamic
2992 symbol as is normal for most other backends. We need foo dynamic
2993 instead, at least for an application final link. However, when
2994 creating a shared library containing foo, we need to have both symbols
2995 dynamic so that references to .foo are satisfied during the early
2996 stages of linking. Otherwise the linker might decide to pull in a
2997 definition from some other object, eg. a static library.
2999 Update: As of August 2004, we support a new convention. Function
3000 calls may use the function descriptor symbol, ie. "bl foo". This
3001 behaves exactly as "bl .foo". */
3003 /* The linker needs to keep track of the number of relocs that it
3004 decides to copy as dynamic relocs in check_relocs for each symbol.
3005 This is so that it can later discard them if they are found to be
3006 unnecessary. We store the information in a field extending the
3007 regular ELF linker hash table. */
3009 struct ppc_dyn_relocs
3011 struct ppc_dyn_relocs
*next
;
3013 /* The input section of the reloc. */
3016 /* Total number of relocs copied for the input section. */
3017 bfd_size_type count
;
3019 /* Number of pc-relative relocs copied for the input section. */
3020 bfd_size_type pc_count
;
3023 /* Track GOT entries needed for a given symbol. We might need more
3024 than one got entry per symbol. */
3027 struct got_entry
*next
;
3029 /* The symbol addend that we'll be placing in the GOT. */
3032 /* Unlike other ELF targets, we use separate GOT entries for the same
3033 symbol referenced from different input files. This is to support
3034 automatic multiple TOC/GOT sections, where the TOC base can vary
3035 from one input file to another.
3037 Point to the BFD owning this GOT entry. */
3040 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3041 TLS_TPREL or TLS_DTPREL for tls entries. */
3044 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3047 bfd_signed_vma refcount
;
3052 /* The same for PLT. */
3055 struct plt_entry
*next
;
3061 bfd_signed_vma refcount
;
3066 /* Of those relocs that might be copied as dynamic relocs, this macro
3067 selects those that must be copied when linking a shared library,
3068 even when the symbol is local. */
3070 #define MUST_BE_DYN_RELOC(RTYPE) \
3071 ((RTYPE) != R_PPC64_REL32 \
3072 && (RTYPE) != R_PPC64_REL64 \
3073 && (RTYPE) != R_PPC64_REL30)
3075 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3076 copying dynamic variables from a shared lib into an app's dynbss
3077 section, and instead use a dynamic relocation to point into the
3078 shared lib. With code that gcc generates, it's vital that this be
3079 enabled; In the PowerPC64 ABI, the address of a function is actually
3080 the address of a function descriptor, which resides in the .opd
3081 section. gcc uses the descriptor directly rather than going via the
3082 GOT as some other ABI's do, which means that initialized function
3083 pointers must reference the descriptor. Thus, a function pointer
3084 initialized to the address of a function in a shared library will
3085 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3086 redefines the function descriptor symbol to point to the copy. This
3087 presents a problem as a plt entry for that function is also
3088 initialized from the function descriptor symbol and the copy reloc
3089 may not be initialized first. */
3090 #define ELIMINATE_COPY_RELOCS 1
3092 /* Section name for stubs is the associated section name plus this
3094 #define STUB_SUFFIX ".stub"
3097 ppc_stub_long_branch:
3098 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3099 destination, but a 24 bit branch in a stub section will reach.
3102 ppc_stub_plt_branch:
3103 Similar to the above, but a 24 bit branch in the stub section won't
3104 reach its destination.
3105 . addis %r12,%r2,xxx@toc@ha
3106 . ld %r11,xxx@toc@l(%r12)
3111 Used to call a function in a shared library. If it so happens that
3112 the plt entry referenced crosses a 64k boundary, then an extra
3113 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3114 xxx+16 as appropriate.
3115 . addis %r12,%r2,xxx@toc@ha
3117 . ld %r11,xxx+0@toc@l(%r12)
3118 . ld %r2,xxx+8@toc@l(%r12)
3120 . ld %r11,xxx+16@toc@l(%r12)
3123 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3124 code to adjust the value and save r2 to support multiple toc sections.
3125 A ppc_stub_long_branch with an r2 offset looks like:
3127 . addis %r2,%r2,off@ha
3128 . addi %r2,%r2,off@l
3131 A ppc_stub_plt_branch with an r2 offset looks like:
3133 . addis %r12,%r2,xxx@toc@ha
3134 . ld %r11,xxx@toc@l(%r12)
3135 . addis %r2,%r2,off@ha
3136 . addi %r2,%r2,off@l
3141 enum ppc_stub_type
{
3143 ppc_stub_long_branch
,
3144 ppc_stub_long_branch_r2off
,
3145 ppc_stub_plt_branch
,
3146 ppc_stub_plt_branch_r2off
,
3150 struct ppc_stub_hash_entry
{
3152 /* Base hash table entry structure. */
3153 struct bfd_hash_entry root
;
3155 enum ppc_stub_type stub_type
;
3157 /* The stub section. */
3160 /* Offset within stub_sec of the beginning of this stub. */
3161 bfd_vma stub_offset
;
3163 /* Given the symbol's value and its section we can determine its final
3164 value when building the stubs (so the stub knows where to jump. */
3165 bfd_vma target_value
;
3166 asection
*target_section
;
3168 /* The symbol table entry, if any, that this was derived from. */
3169 struct ppc_link_hash_entry
*h
;
3171 /* And the reloc addend that this was derived from. */
3174 /* Where this stub is being called from, or, in the case of combined
3175 stub sections, the first input section in the group. */
3179 struct ppc_branch_hash_entry
{
3181 /* Base hash table entry structure. */
3182 struct bfd_hash_entry root
;
3184 /* Offset within .branch_lt. */
3185 unsigned int offset
;
3187 /* Generation marker. */
3191 struct ppc_link_hash_entry
3193 struct elf_link_hash_entry elf
;
3195 /* A pointer to the most recently used stub hash entry against this
3197 struct ppc_stub_hash_entry
*stub_cache
;
3199 /* Track dynamic relocs copied for this symbol. */
3200 struct ppc_dyn_relocs
*dyn_relocs
;
3202 /* Link between function code and descriptor symbols. */
3203 struct ppc_link_hash_entry
*oh
;
3205 /* Flag function code and descriptor symbols. */
3206 unsigned int is_func
:1;
3207 unsigned int is_func_descriptor
:1;
3209 /* Whether global opd sym has been adjusted or not.
3210 After ppc64_elf_edit_opd has run, this flag should be set for all
3211 globals defined in any opd section. */
3212 unsigned int adjust_done
:1;
3214 /* Set if we twiddled this symbol to weak at some stage. */
3215 unsigned int was_undefined
:1;
3217 /* Contexts in which symbol is used in the GOT (or TOC).
3218 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3219 corresponding relocs are encountered during check_relocs.
3220 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3221 indicate the corresponding GOT entry type is not needed.
3222 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3223 a TPREL one. We use a separate flag rather than setting TPREL
3224 just for convenience in distinguishing the two cases. */
3225 #define TLS_GD 1 /* GD reloc. */
3226 #define TLS_LD 2 /* LD reloc. */
3227 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3228 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3229 #define TLS_TLS 16 /* Any TLS reloc. */
3230 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3231 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3235 /* ppc64 ELF linker hash table. */
3237 struct ppc_link_hash_table
3239 struct elf_link_hash_table elf
;
3241 /* The stub hash table. */
3242 struct bfd_hash_table stub_hash_table
;
3244 /* Another hash table for plt_branch stubs. */
3245 struct bfd_hash_table branch_hash_table
;
3247 /* Linker stub bfd. */
3250 /* Linker call-backs. */
3251 asection
* (*add_stub_section
) (const char *, asection
*);
3252 void (*layout_sections_again
) (void);
3254 /* Array to keep track of which stub sections have been created, and
3255 information on stub grouping. */
3257 /* This is the section to which stubs in the group will be attached. */
3259 /* The stub section. */
3261 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3265 /* Temp used when calculating TOC pointers. */
3268 /* Highest input section id. */
3271 /* Highest output section index. */
3274 /* List of input sections for each output section. */
3275 asection
**input_list
;
3277 /* Short-cuts to get to dynamic linker sections. */
3288 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3289 struct ppc_link_hash_entry
*tls_get_addr
;
3290 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3293 unsigned long stub_count
[ppc_stub_plt_call
];
3295 /* Number of stubs against global syms. */
3296 unsigned long stub_globals
;
3298 /* Set if we should emit symbols for stubs. */
3299 unsigned int emit_stub_syms
:1;
3302 unsigned int stub_error
:1;
3304 /* Flag set when small branches are detected. Used to
3305 select suitable defaults for the stub group size. */
3306 unsigned int has_14bit_branch
:1;
3308 /* Temp used by ppc64_elf_check_directives. */
3309 unsigned int twiddled_syms
:1;
3311 /* Incremented every time we size stubs. */
3312 unsigned int stub_iteration
;
3314 /* Small local sym to section mapping cache. */
3315 struct sym_sec_cache sym_sec
;
3318 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3320 #define ppc_hash_table(p) \
3321 ((struct ppc_link_hash_table *) ((p)->hash))
3323 #define ppc_stub_hash_lookup(table, string, create, copy) \
3324 ((struct ppc_stub_hash_entry *) \
3325 bfd_hash_lookup ((table), (string), (create), (copy)))
3327 #define ppc_branch_hash_lookup(table, string, create, copy) \
3328 ((struct ppc_branch_hash_entry *) \
3329 bfd_hash_lookup ((table), (string), (create), (copy)))
3331 /* Create an entry in the stub hash table. */
3333 static struct bfd_hash_entry
*
3334 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3335 struct bfd_hash_table
*table
,
3338 /* Allocate the structure if it has not already been allocated by a
3342 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3347 /* Call the allocation method of the superclass. */
3348 entry
= bfd_hash_newfunc (entry
, table
, string
);
3351 struct ppc_stub_hash_entry
*eh
;
3353 /* Initialize the local fields. */
3354 eh
= (struct ppc_stub_hash_entry
*) entry
;
3355 eh
->stub_type
= ppc_stub_none
;
3356 eh
->stub_sec
= NULL
;
3357 eh
->stub_offset
= 0;
3358 eh
->target_value
= 0;
3359 eh
->target_section
= NULL
;
3367 /* Create an entry in the branch hash table. */
3369 static struct bfd_hash_entry
*
3370 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3371 struct bfd_hash_table
*table
,
3374 /* Allocate the structure if it has not already been allocated by a
3378 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3383 /* Call the allocation method of the superclass. */
3384 entry
= bfd_hash_newfunc (entry
, table
, string
);
3387 struct ppc_branch_hash_entry
*eh
;
3389 /* Initialize the local fields. */
3390 eh
= (struct ppc_branch_hash_entry
*) entry
;
3398 /* Create an entry in a ppc64 ELF linker hash table. */
3400 static struct bfd_hash_entry
*
3401 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3402 struct bfd_hash_table
*table
,
3405 /* Allocate the structure if it has not already been allocated by a
3409 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3414 /* Call the allocation method of the superclass. */
3415 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3418 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3420 eh
->stub_cache
= NULL
;
3421 eh
->dyn_relocs
= NULL
;
3424 eh
->is_func_descriptor
= 0;
3425 eh
->adjust_done
= 0;
3426 eh
->was_undefined
= 0;
3433 /* Create a ppc64 ELF linker hash table. */
3435 static struct bfd_link_hash_table
*
3436 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3438 struct ppc_link_hash_table
*htab
;
3439 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3441 htab
= bfd_zmalloc (amt
);
3445 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3451 /* Init the stub hash table too. */
3452 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3455 /* And the branch hash table. */
3456 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3459 /* Initializing two fields of the union is just cosmetic. We really
3460 only care about glist, but when compiled on a 32-bit host the
3461 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3462 debugger inspection of these fields look nicer. */
3463 htab
->elf
.init_refcount
.refcount
= 0;
3464 htab
->elf
.init_refcount
.glist
= NULL
;
3465 htab
->elf
.init_offset
.offset
= 0;
3466 htab
->elf
.init_offset
.glist
= NULL
;
3468 return &htab
->elf
.root
;
3471 /* Free the derived linker hash table. */
3474 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3476 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3478 bfd_hash_table_free (&ret
->stub_hash_table
);
3479 bfd_hash_table_free (&ret
->branch_hash_table
);
3480 _bfd_generic_link_hash_table_free (hash
);
3483 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3486 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3488 struct ppc_link_hash_table
*htab
;
3490 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3492 /* Always hook our dynamic sections into the first bfd, which is the
3493 linker created stub bfd. This ensures that the GOT header is at
3494 the start of the output TOC section. */
3495 htab
= ppc_hash_table (info
);
3496 htab
->stub_bfd
= abfd
;
3497 htab
->elf
.dynobj
= abfd
;
3500 /* Build a name for an entry in the stub hash table. */
3503 ppc_stub_name (const asection
*input_section
,
3504 const asection
*sym_sec
,
3505 const struct ppc_link_hash_entry
*h
,
3506 const Elf_Internal_Rela
*rel
)
3511 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3512 offsets from a sym as a branch target? In fact, we could
3513 probably assume the addend is always zero. */
3514 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3518 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3519 stub_name
= bfd_malloc (len
);
3520 if (stub_name
!= NULL
)
3522 sprintf (stub_name
, "%08x.%s+%x",
3523 input_section
->id
& 0xffffffff,
3524 h
->elf
.root
.root
.string
,
3525 (int) rel
->r_addend
& 0xffffffff);
3530 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3531 stub_name
= bfd_malloc (len
);
3532 if (stub_name
!= NULL
)
3534 sprintf (stub_name
, "%08x.%x:%x+%x",
3535 input_section
->id
& 0xffffffff,
3536 sym_sec
->id
& 0xffffffff,
3537 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3538 (int) rel
->r_addend
& 0xffffffff);
3541 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3542 stub_name
[len
- 2] = 0;
3546 /* Look up an entry in the stub hash. Stub entries are cached because
3547 creating the stub name takes a bit of time. */
3549 static struct ppc_stub_hash_entry
*
3550 ppc_get_stub_entry (const asection
*input_section
,
3551 const asection
*sym_sec
,
3552 struct ppc_link_hash_entry
*h
,
3553 const Elf_Internal_Rela
*rel
,
3554 struct ppc_link_hash_table
*htab
)
3556 struct ppc_stub_hash_entry
*stub_entry
;
3557 const asection
*id_sec
;
3559 /* If this input section is part of a group of sections sharing one
3560 stub section, then use the id of the first section in the group.
3561 Stub names need to include a section id, as there may well be
3562 more than one stub used to reach say, printf, and we need to
3563 distinguish between them. */
3564 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3566 if (h
!= NULL
&& h
->stub_cache
!= NULL
3567 && h
->stub_cache
->h
== h
3568 && h
->stub_cache
->id_sec
== id_sec
)
3570 stub_entry
= h
->stub_cache
;
3576 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3577 if (stub_name
== NULL
)
3580 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3581 stub_name
, FALSE
, FALSE
);
3583 h
->stub_cache
= stub_entry
;
3591 /* Add a new stub entry to the stub hash. Not all fields of the new
3592 stub entry are initialised. */
3594 static struct ppc_stub_hash_entry
*
3595 ppc_add_stub (const char *stub_name
,
3597 struct ppc_link_hash_table
*htab
)
3601 struct ppc_stub_hash_entry
*stub_entry
;
3603 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3604 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3605 if (stub_sec
== NULL
)
3607 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3608 if (stub_sec
== NULL
)
3614 namelen
= strlen (link_sec
->name
);
3615 len
= namelen
+ sizeof (STUB_SUFFIX
);
3616 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3620 memcpy (s_name
, link_sec
->name
, namelen
);
3621 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3622 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3623 if (stub_sec
== NULL
)
3625 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3627 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3630 /* Enter this entry into the linker stub hash table. */
3631 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3633 if (stub_entry
== NULL
)
3635 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3636 section
->owner
, stub_name
);
3640 stub_entry
->stub_sec
= stub_sec
;
3641 stub_entry
->stub_offset
= 0;
3642 stub_entry
->id_sec
= link_sec
;
3646 /* Create sections for linker generated code. */
3649 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3651 struct ppc_link_hash_table
*htab
;
3654 htab
= ppc_hash_table (info
);
3656 /* Create .sfpr for code to save and restore fp regs. */
3657 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3658 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3659 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3660 if (htab
->sfpr
== NULL
3661 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3662 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3665 /* Create .glink for lazy dynamic linking support. */
3666 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3667 if (htab
->glink
== NULL
3668 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3669 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3672 /* Create .branch_lt for plt_branch stubs. */
3673 flags
= (SEC_ALLOC
| SEC_LOAD
3674 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3675 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3676 if (htab
->brlt
== NULL
3677 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3678 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3681 if (info
->shared
|| info
->emitrelocations
)
3683 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3684 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3685 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3687 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3688 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3694 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3695 not already done. */
3698 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3700 asection
*got
, *relgot
;
3702 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3706 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3709 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3714 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3715 | SEC_LINKER_CREATED
);
3717 got
= bfd_make_section (abfd
, ".got");
3719 || !bfd_set_section_flags (abfd
, got
, flags
)
3720 || !bfd_set_section_alignment (abfd
, got
, 3))
3723 relgot
= bfd_make_section (abfd
, ".rela.got");
3725 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3726 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3729 ppc64_elf_tdata (abfd
)->got
= got
;
3730 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3734 /* Create the dynamic sections, and set up shortcuts. */
3737 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3739 struct ppc_link_hash_table
*htab
;
3741 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3744 htab
= ppc_hash_table (info
);
3746 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3747 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3748 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3749 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3751 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3753 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3754 || (!info
->shared
&& !htab
->relbss
))
3760 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3763 ppc64_elf_copy_indirect_symbol
3764 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3765 struct elf_link_hash_entry
*dir
,
3766 struct elf_link_hash_entry
*ind
)
3768 struct ppc_link_hash_entry
*edir
, *eind
;
3771 edir
= (struct ppc_link_hash_entry
*) dir
;
3772 eind
= (struct ppc_link_hash_entry
*) ind
;
3774 /* Copy over any dynamic relocs we may have on the indirect sym. */
3775 if (eind
->dyn_relocs
!= NULL
)
3777 if (edir
->dyn_relocs
!= NULL
)
3779 struct ppc_dyn_relocs
**pp
;
3780 struct ppc_dyn_relocs
*p
;
3782 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3785 /* Add reloc counts against the weak sym to the strong sym
3786 list. Merge any entries against the same section. */
3787 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3789 struct ppc_dyn_relocs
*q
;
3791 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3792 if (q
->sec
== p
->sec
)
3794 q
->pc_count
+= p
->pc_count
;
3795 q
->count
+= p
->count
;
3802 *pp
= edir
->dyn_relocs
;
3805 edir
->dyn_relocs
= eind
->dyn_relocs
;
3806 eind
->dyn_relocs
= NULL
;
3809 edir
->is_func
|= eind
->is_func
;
3810 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3811 edir
->tls_mask
|= eind
->tls_mask
;
3813 mask
= (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
3814 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
| ELF_LINK_NON_GOT_REF
3815 | ELF_LINK_HASH_NEEDS_PLT
);
3816 /* If called to transfer flags for a weakdef during processing
3817 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3818 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3819 if (ELIMINATE_COPY_RELOCS
3820 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3821 && (edir
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
3822 mask
&= ~ELF_LINK_NON_GOT_REF
;
3824 edir
->elf
.elf_link_hash_flags
|= eind
->elf
.elf_link_hash_flags
& mask
;
3826 /* If we were called to copy over info for a weak sym, that's all. */
3827 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3830 /* Copy over got entries that we may have already seen to the
3831 symbol which just became indirect. */
3832 if (eind
->elf
.got
.glist
!= NULL
)
3834 if (edir
->elf
.got
.glist
!= NULL
)
3836 struct got_entry
**entp
;
3837 struct got_entry
*ent
;
3839 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3841 struct got_entry
*dent
;
3843 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3844 if (dent
->addend
== ent
->addend
3845 && dent
->owner
== ent
->owner
3846 && dent
->tls_type
== ent
->tls_type
)
3848 dent
->got
.refcount
+= ent
->got
.refcount
;
3855 *entp
= edir
->elf
.got
.glist
;
3858 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3859 eind
->elf
.got
.glist
= NULL
;
3862 /* And plt entries. */
3863 if (eind
->elf
.plt
.plist
!= NULL
)
3865 if (edir
->elf
.plt
.plist
!= NULL
)
3867 struct plt_entry
**entp
;
3868 struct plt_entry
*ent
;
3870 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3872 struct plt_entry
*dent
;
3874 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3875 if (dent
->addend
== ent
->addend
)
3877 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3884 *entp
= edir
->elf
.plt
.plist
;
3887 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3888 eind
->elf
.plt
.plist
= NULL
;
3891 if (edir
->elf
.dynindx
== -1)
3893 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3894 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3895 eind
->elf
.dynindx
= -1;
3896 eind
->elf
.dynstr_index
= 0;
3899 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3902 /* Find the function descriptor hash entry from the given function code
3903 hash entry FH. Link the entries via their OH fields. */
3905 static struct ppc_link_hash_entry
*
3906 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3908 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3912 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3914 fdh
= (struct ppc_link_hash_entry
*)
3915 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3918 fdh
->is_func_descriptor
= 1;
3928 /* Hacks to support old ABI code.
3929 When making function calls, old ABI code references function entry
3930 points (dot symbols), while new ABI code references the function
3931 descriptor symbol. We need to make any combination of reference and
3932 definition work together, without breaking archive linking.
3934 For a defined function "foo" and an undefined call to "bar":
3935 An old object defines "foo" and ".foo", references ".bar" (possibly
3937 A new object defines "foo" and references "bar".
3939 A new object thus has no problem with its undefined symbols being
3940 satisfied by definitions in an old object. On the other hand, the
3941 old object won't have ".bar" satisfied by a new object. */
3943 /* Fix function descriptor symbols defined in .opd sections to be
3947 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
3948 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3949 Elf_Internal_Sym
*isym
,
3950 const char **name ATTRIBUTE_UNUSED
,
3951 flagword
*flags ATTRIBUTE_UNUSED
,
3953 bfd_vma
*value ATTRIBUTE_UNUSED
)
3956 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
3957 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
3961 /* This function makes an old ABI object reference to ".bar" cause the
3962 inclusion of a new ABI object archive that defines "bar". */
3964 static struct elf_link_hash_entry
*
3965 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
3966 struct bfd_link_info
*info
,
3969 struct elf_link_hash_entry
*h
;
3973 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
3980 len
= strlen (name
);
3981 dot_name
= bfd_alloc (abfd
, len
+ 2);
3982 if (dot_name
== NULL
)
3983 return (struct elf_link_hash_entry
*) 0 - 1;
3985 memcpy (dot_name
+ 1, name
, len
+ 1);
3986 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
3987 bfd_release (abfd
, dot_name
);
3991 /* This function satisfies all old ABI object references to ".bar" if a
3992 new ABI object defines "bar". Well, at least, undefined dot symbols
3993 are made weak. This stops later archive searches from including an
3994 object if we already have a function descriptor definition. It also
3995 prevents the linker complaining about undefined symbols.
3996 We also check and correct mismatched symbol visibility here. The
3997 most restrictive visibility of the function descriptor and the
3998 function entry symbol is used. */
4001 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4003 struct bfd_link_info
*info
;
4004 struct ppc_link_hash_table
*htab
;
4005 struct ppc_link_hash_entry
*eh
;
4006 struct ppc_link_hash_entry
*fdh
;
4008 if (h
->root
.type
== bfd_link_hash_indirect
)
4011 if (h
->root
.type
== bfd_link_hash_warning
)
4012 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4014 if (h
->root
.root
.string
[0] != '.')
4018 htab
= ppc_hash_table (info
);
4019 eh
= (struct ppc_link_hash_entry
*) h
;
4020 fdh
= get_fdh (eh
, htab
);
4023 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4024 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4025 if (entry_vis
< descr_vis
)
4026 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4027 else if (entry_vis
> descr_vis
)
4028 eh
->elf
.other
+= descr_vis
- entry_vis
;
4030 if (eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4032 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4033 eh
->was_undefined
= 1;
4034 htab
->twiddled_syms
= 1;
4042 ppc64_elf_check_directives (bfd
*abfd ATTRIBUTE_UNUSED
,
4043 struct bfd_link_info
*info
)
4045 struct ppc_link_hash_table
*htab
;
4047 htab
= ppc_hash_table (info
);
4048 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4051 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, info
);
4053 /* We need to fix the undefs list for any syms we have twiddled to
4055 if (htab
->twiddled_syms
)
4057 struct bfd_link_hash_entry
**pun
;
4059 pun
= &htab
->elf
.root
.undefs
;
4060 while (*pun
!= NULL
)
4062 struct bfd_link_hash_entry
*h
= *pun
;
4064 if (h
->type
!= bfd_link_hash_undefined
4065 && h
->type
!= bfd_link_hash_common
)
4069 if (h
== htab
->elf
.root
.undefs_tail
)
4071 if (pun
== &htab
->elf
.root
.undefs
)
4072 htab
->elf
.root
.undefs_tail
= NULL
;
4074 /* pun points at an und_next field. Go back to
4075 the start of the link_hash_entry. */
4076 htab
->elf
.root
.undefs_tail
= (struct bfd_link_hash_entry
*)
4077 ((char *) pun
- ((char *) &h
->und_next
- (char *) h
));
4085 htab
->twiddled_syms
= 0;
4091 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4092 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4094 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4095 char *local_got_tls_masks
;
4097 if (local_got_ents
== NULL
)
4099 bfd_size_type size
= symtab_hdr
->sh_info
;
4101 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4102 local_got_ents
= bfd_zalloc (abfd
, size
);
4103 if (local_got_ents
== NULL
)
4105 elf_local_got_ents (abfd
) = local_got_ents
;
4108 if ((tls_type
& TLS_EXPLICIT
) == 0)
4110 struct got_entry
*ent
;
4112 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4113 if (ent
->addend
== r_addend
4114 && ent
->owner
== abfd
4115 && ent
->tls_type
== tls_type
)
4119 bfd_size_type amt
= sizeof (*ent
);
4120 ent
= bfd_alloc (abfd
, amt
);
4123 ent
->next
= local_got_ents
[r_symndx
];
4124 ent
->addend
= r_addend
;
4126 ent
->tls_type
= tls_type
;
4127 ent
->got
.refcount
= 0;
4128 local_got_ents
[r_symndx
] = ent
;
4130 ent
->got
.refcount
+= 1;
4133 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4134 local_got_tls_masks
[r_symndx
] |= tls_type
;
4139 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4141 struct plt_entry
*ent
;
4143 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4144 if (ent
->addend
== addend
)
4148 bfd_size_type amt
= sizeof (*ent
);
4149 ent
= bfd_alloc (abfd
, amt
);
4152 ent
->next
= eh
->elf
.plt
.plist
;
4153 ent
->addend
= addend
;
4154 ent
->plt
.refcount
= 0;
4155 eh
->elf
.plt
.plist
= ent
;
4157 ent
->plt
.refcount
+= 1;
4158 eh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
4163 /* Look through the relocs for a section during the first phase, and
4164 calculate needed space in the global offset table, procedure
4165 linkage table, and dynamic reloc sections. */
4168 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4169 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4171 struct ppc_link_hash_table
*htab
;
4172 Elf_Internal_Shdr
*symtab_hdr
;
4173 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4174 const Elf_Internal_Rela
*rel
;
4175 const Elf_Internal_Rela
*rel_end
;
4177 asection
**opd_sym_map
;
4179 if (info
->relocatable
)
4182 /* Don't do anything special with non-loaded, non-alloced sections.
4183 In particular, any relocs in such sections should not affect GOT
4184 and PLT reference counting (ie. we don't allow them to create GOT
4185 or PLT entries), there's no possibility or desire to optimize TLS
4186 relocs, and there's not much point in propagating relocs to shared
4187 libs that the dynamic linker won't relocate. */
4188 if ((sec
->flags
& SEC_ALLOC
) == 0)
4191 htab
= ppc_hash_table (info
);
4192 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4194 sym_hashes
= elf_sym_hashes (abfd
);
4195 sym_hashes_end
= (sym_hashes
4196 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4197 - symtab_hdr
->sh_info
);
4201 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4203 /* Garbage collection needs some extra help with .opd sections.
4204 We don't want to necessarily keep everything referenced by
4205 relocs in .opd, as that would keep all functions. Instead,
4206 if we reference an .opd symbol (a function descriptor), we
4207 want to keep the function code symbol's section. This is
4208 easy for global symbols, but for local syms we need to keep
4209 information about the associated function section. Later, if
4210 edit_opd deletes entries, we'll use this array to adjust
4211 local syms in .opd. */
4213 asection
*func_section
;
4218 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4219 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4220 if (opd_sym_map
== NULL
)
4222 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4225 if (htab
->sfpr
== NULL
4226 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4229 rel_end
= relocs
+ sec
->reloc_count
;
4230 for (rel
= relocs
; rel
< rel_end
; rel
++)
4232 unsigned long r_symndx
;
4233 struct elf_link_hash_entry
*h
;
4234 enum elf_ppc64_reloc_type r_type
;
4237 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4238 if (r_symndx
< symtab_hdr
->sh_info
)
4241 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4243 r_type
= ELF64_R_TYPE (rel
->r_info
);
4246 case R_PPC64_GOT_TLSLD16
:
4247 case R_PPC64_GOT_TLSLD16_LO
:
4248 case R_PPC64_GOT_TLSLD16_HI
:
4249 case R_PPC64_GOT_TLSLD16_HA
:
4250 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4251 tls_type
= TLS_TLS
| TLS_LD
;
4254 case R_PPC64_GOT_TLSGD16
:
4255 case R_PPC64_GOT_TLSGD16_LO
:
4256 case R_PPC64_GOT_TLSGD16_HI
:
4257 case R_PPC64_GOT_TLSGD16_HA
:
4258 tls_type
= TLS_TLS
| TLS_GD
;
4261 case R_PPC64_GOT_TPREL16_DS
:
4262 case R_PPC64_GOT_TPREL16_LO_DS
:
4263 case R_PPC64_GOT_TPREL16_HI
:
4264 case R_PPC64_GOT_TPREL16_HA
:
4266 info
->flags
|= DF_STATIC_TLS
;
4267 tls_type
= TLS_TLS
| TLS_TPREL
;
4270 case R_PPC64_GOT_DTPREL16_DS
:
4271 case R_PPC64_GOT_DTPREL16_LO_DS
:
4272 case R_PPC64_GOT_DTPREL16_HI
:
4273 case R_PPC64_GOT_DTPREL16_HA
:
4274 tls_type
= TLS_TLS
| TLS_DTPREL
;
4276 sec
->has_tls_reloc
= 1;
4280 case R_PPC64_GOT16_DS
:
4281 case R_PPC64_GOT16_HA
:
4282 case R_PPC64_GOT16_HI
:
4283 case R_PPC64_GOT16_LO
:
4284 case R_PPC64_GOT16_LO_DS
:
4285 /* This symbol requires a global offset table entry. */
4286 sec
->has_gp_reloc
= 1;
4287 if (ppc64_elf_tdata (abfd
)->got
== NULL
4288 && !create_got_section (abfd
, info
))
4293 struct ppc_link_hash_entry
*eh
;
4294 struct got_entry
*ent
;
4296 eh
= (struct ppc_link_hash_entry
*) h
;
4297 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4298 if (ent
->addend
== rel
->r_addend
4299 && ent
->owner
== abfd
4300 && ent
->tls_type
== tls_type
)
4304 bfd_size_type amt
= sizeof (*ent
);
4305 ent
= bfd_alloc (abfd
, amt
);
4308 ent
->next
= eh
->elf
.got
.glist
;
4309 ent
->addend
= rel
->r_addend
;
4311 ent
->tls_type
= tls_type
;
4312 ent
->got
.refcount
= 0;
4313 eh
->elf
.got
.glist
= ent
;
4315 ent
->got
.refcount
+= 1;
4316 eh
->tls_mask
|= tls_type
;
4319 /* This is a global offset table entry for a local symbol. */
4320 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4321 rel
->r_addend
, tls_type
))
4325 case R_PPC64_PLT16_HA
:
4326 case R_PPC64_PLT16_HI
:
4327 case R_PPC64_PLT16_LO
:
4330 /* This symbol requires a procedure linkage table entry. We
4331 actually build the entry in adjust_dynamic_symbol,
4332 because this might be a case of linking PIC code without
4333 linking in any dynamic objects, in which case we don't
4334 need to generate a procedure linkage table after all. */
4337 /* It does not make sense to have a procedure linkage
4338 table entry for a local symbol. */
4339 bfd_set_error (bfd_error_bad_value
);
4343 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4351 case R_PPC64_SECTOFF
:
4352 case R_PPC64_SECTOFF_LO
:
4353 case R_PPC64_SECTOFF_HI
:
4354 case R_PPC64_SECTOFF_HA
:
4355 case R_PPC64_SECTOFF_DS
:
4356 case R_PPC64_SECTOFF_LO_DS
:
4357 case R_PPC64_DTPREL16
:
4358 case R_PPC64_DTPREL16_LO
:
4359 case R_PPC64_DTPREL16_HI
:
4360 case R_PPC64_DTPREL16_HA
:
4361 case R_PPC64_DTPREL16_DS
:
4362 case R_PPC64_DTPREL16_LO_DS
:
4363 case R_PPC64_DTPREL16_HIGHER
:
4364 case R_PPC64_DTPREL16_HIGHERA
:
4365 case R_PPC64_DTPREL16_HIGHEST
:
4366 case R_PPC64_DTPREL16_HIGHESTA
:
4371 case R_PPC64_TOC16_LO
:
4372 case R_PPC64_TOC16_HI
:
4373 case R_PPC64_TOC16_HA
:
4374 case R_PPC64_TOC16_DS
:
4375 case R_PPC64_TOC16_LO_DS
:
4376 sec
->has_gp_reloc
= 1;
4379 /* This relocation describes the C++ object vtable hierarchy.
4380 Reconstruct it for later use during GC. */
4381 case R_PPC64_GNU_VTINHERIT
:
4382 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4386 /* This relocation describes which C++ vtable entries are actually
4387 used. Record for later use during GC. */
4388 case R_PPC64_GNU_VTENTRY
:
4389 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4394 case R_PPC64_REL14_BRTAKEN
:
4395 case R_PPC64_REL14_BRNTAKEN
:
4396 htab
->has_14bit_branch
= 1;
4402 /* We may need a .plt entry if the function this reloc
4403 refers to is in a shared lib. */
4404 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4407 if (h
== &htab
->tls_get_addr
->elf
4408 || h
== &htab
->tls_get_addr_fd
->elf
)
4409 sec
->has_tls_reloc
= 1;
4410 else if (htab
->tls_get_addr
== NULL
4411 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4412 && (h
->root
.root
.string
[15] == 0
4413 || h
->root
.root
.string
[15] == '@'))
4415 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4416 sec
->has_tls_reloc
= 1;
4418 else if (htab
->tls_get_addr_fd
== NULL
4419 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4420 && (h
->root
.root
.string
[14] == 0
4421 || h
->root
.root
.string
[14] == '@'))
4423 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4424 sec
->has_tls_reloc
= 1;
4429 case R_PPC64_TPREL64
:
4430 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4432 info
->flags
|= DF_STATIC_TLS
;
4435 case R_PPC64_DTPMOD64
:
4436 if (rel
+ 1 < rel_end
4437 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4438 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4439 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4441 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4444 case R_PPC64_DTPREL64
:
4445 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4447 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4448 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4449 /* This is the second reloc of a dtpmod, dtprel pair.
4450 Don't mark with TLS_DTPREL. */
4454 sec
->has_tls_reloc
= 1;
4457 struct ppc_link_hash_entry
*eh
;
4458 eh
= (struct ppc_link_hash_entry
*) h
;
4459 eh
->tls_mask
|= tls_type
;
4462 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4463 rel
->r_addend
, tls_type
))
4466 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4468 /* One extra to simplify get_tls_mask. */
4469 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4470 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4471 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4474 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4475 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4477 /* Mark the second slot of a GD or LD entry.
4478 -1 to indicate GD and -2 to indicate LD. */
4479 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4480 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4481 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4482 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4485 case R_PPC64_TPREL16
:
4486 case R_PPC64_TPREL16_LO
:
4487 case R_PPC64_TPREL16_HI
:
4488 case R_PPC64_TPREL16_HA
:
4489 case R_PPC64_TPREL16_DS
:
4490 case R_PPC64_TPREL16_LO_DS
:
4491 case R_PPC64_TPREL16_HIGHER
:
4492 case R_PPC64_TPREL16_HIGHERA
:
4493 case R_PPC64_TPREL16_HIGHEST
:
4494 case R_PPC64_TPREL16_HIGHESTA
:
4497 info
->flags
|= DF_STATIC_TLS
;
4502 case R_PPC64_ADDR64
:
4503 if (opd_sym_map
!= NULL
4504 && rel
+ 1 < rel_end
4505 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4509 if (h
->root
.root
.string
[0] == '.'
4510 && h
->root
.root
.string
[1] != 0
4511 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4514 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4520 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4525 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4533 case R_PPC64_ADDR14
:
4534 case R_PPC64_ADDR14_BRNTAKEN
:
4535 case R_PPC64_ADDR14_BRTAKEN
:
4536 case R_PPC64_ADDR16
:
4537 case R_PPC64_ADDR16_DS
:
4538 case R_PPC64_ADDR16_HA
:
4539 case R_PPC64_ADDR16_HI
:
4540 case R_PPC64_ADDR16_HIGHER
:
4541 case R_PPC64_ADDR16_HIGHERA
:
4542 case R_PPC64_ADDR16_HIGHEST
:
4543 case R_PPC64_ADDR16_HIGHESTA
:
4544 case R_PPC64_ADDR16_LO
:
4545 case R_PPC64_ADDR16_LO_DS
:
4546 case R_PPC64_ADDR24
:
4547 case R_PPC64_ADDR32
:
4548 case R_PPC64_UADDR16
:
4549 case R_PPC64_UADDR32
:
4550 case R_PPC64_UADDR64
:
4552 if (h
!= NULL
&& !info
->shared
)
4553 /* We may need a copy reloc. */
4554 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
4556 /* Don't propagate .opd relocs. */
4557 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4560 /* If we are creating a shared library, and this is a reloc
4561 against a global symbol, or a non PC relative reloc
4562 against a local symbol, then we need to copy the reloc
4563 into the shared library. However, if we are linking with
4564 -Bsymbolic, we do not need to copy a reloc against a
4565 global symbol which is defined in an object we are
4566 including in the link (i.e., DEF_REGULAR is set). At
4567 this point we have not seen all the input files, so it is
4568 possible that DEF_REGULAR is not set now but will be set
4569 later (it is never cleared). In case of a weak definition,
4570 DEF_REGULAR may be cleared later by a strong definition in
4571 a shared library. We account for that possibility below by
4572 storing information in the dyn_relocs field of the hash
4573 table entry. A similar situation occurs when creating
4574 shared libraries and symbol visibility changes render the
4577 If on the other hand, we are creating an executable, we
4578 may need to keep relocations for symbols satisfied by a
4579 dynamic library if we manage to avoid copy relocs for the
4583 && (MUST_BE_DYN_RELOC (r_type
)
4585 && (! info
->symbolic
4586 || h
->root
.type
== bfd_link_hash_defweak
4587 || (h
->elf_link_hash_flags
4588 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
4589 || (ELIMINATE_COPY_RELOCS
4592 && (h
->root
.type
== bfd_link_hash_defweak
4593 || (h
->elf_link_hash_flags
4594 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
4596 struct ppc_dyn_relocs
*p
;
4597 struct ppc_dyn_relocs
**head
;
4599 /* We must copy these reloc types into the output file.
4600 Create a reloc section in dynobj and make room for
4607 name
= (bfd_elf_string_from_elf_section
4609 elf_elfheader (abfd
)->e_shstrndx
,
4610 elf_section_data (sec
)->rel_hdr
.sh_name
));
4614 if (strncmp (name
, ".rela", 5) != 0
4615 || strcmp (bfd_get_section_name (abfd
, sec
),
4618 (*_bfd_error_handler
)
4619 (_("%B: bad relocation section name `%s\'"),
4621 bfd_set_error (bfd_error_bad_value
);
4624 dynobj
= htab
->elf
.dynobj
;
4625 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4630 sreloc
= bfd_make_section (dynobj
, name
);
4631 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4632 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4633 if ((sec
->flags
& SEC_ALLOC
) != 0)
4634 flags
|= SEC_ALLOC
| SEC_LOAD
;
4636 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
4637 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4640 elf_section_data (sec
)->sreloc
= sreloc
;
4643 /* If this is a global symbol, we count the number of
4644 relocations we need for this symbol. */
4647 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4651 /* Track dynamic relocs needed for local syms too.
4652 We really need local syms available to do this
4656 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4661 head
= ((struct ppc_dyn_relocs
**)
4662 &elf_section_data (s
)->local_dynrel
);
4666 if (p
== NULL
|| p
->sec
!= sec
)
4668 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4679 if (!MUST_BE_DYN_RELOC (r_type
))
4692 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4693 of the code entry point, and its section. */
4696 opd_entry_value (asection
*opd_sec
,
4698 asection
**code_sec
,
4701 bfd
*opd_bfd
= opd_sec
->owner
;
4702 Elf_Internal_Rela
*lo
, *hi
, *look
;
4704 /* Go find the opd reloc at the sym address. */
4705 lo
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4706 BFD_ASSERT (lo
!= NULL
);
4707 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4711 look
= lo
+ (hi
- lo
) / 2;
4712 if (look
->r_offset
< offset
)
4714 else if (look
->r_offset
> offset
)
4718 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4719 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4720 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4722 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4726 if (symndx
< symtab_hdr
->sh_info
)
4728 Elf_Internal_Sym
*sym
;
4730 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4733 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4734 symtab_hdr
->sh_info
,
4735 0, NULL
, NULL
, NULL
);
4737 return (bfd_vma
) -1;
4738 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4742 val
= sym
->st_value
;
4744 if ((sym
->st_shndx
!= SHN_UNDEF
4745 && sym
->st_shndx
< SHN_LORESERVE
)
4746 || sym
->st_shndx
> SHN_HIRESERVE
)
4747 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4748 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4752 struct elf_link_hash_entry
**sym_hashes
;
4753 struct elf_link_hash_entry
*rh
;
4755 sym_hashes
= elf_sym_hashes (opd_bfd
);
4756 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4757 while (rh
->root
.type
== bfd_link_hash_indirect
4758 || rh
->root
.type
== bfd_link_hash_warning
)
4759 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4760 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4761 || rh
->root
.type
== bfd_link_hash_defweak
);
4762 val
= rh
->root
.u
.def
.value
;
4763 sec
= rh
->root
.u
.def
.section
;
4765 val
+= look
->r_addend
;
4766 if (code_off
!= NULL
)
4768 if (code_sec
!= NULL
)
4770 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4771 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4777 return (bfd_vma
) -1;
4780 /* Return the section that should be marked against GC for a given
4784 ppc64_elf_gc_mark_hook (asection
*sec
,
4785 struct bfd_link_info
*info
,
4786 Elf_Internal_Rela
*rel
,
4787 struct elf_link_hash_entry
*h
,
4788 Elf_Internal_Sym
*sym
)
4792 /* First mark all our entry sym sections. */
4793 if (info
->gc_sym_list
!= NULL
)
4795 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4796 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4798 info
->gc_sym_list
= NULL
;
4801 struct ppc_link_hash_entry
*eh
;
4803 eh
= (struct ppc_link_hash_entry
*)
4804 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4807 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4808 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4811 if (eh
->is_func_descriptor
)
4812 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4813 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4814 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4815 eh
->elf
.root
.u
.def
.value
,
4816 &rsec
, NULL
) != (bfd_vma
) -1)
4822 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4824 rsec
= eh
->elf
.root
.u
.def
.section
;
4826 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4830 while (sym
!= NULL
);
4833 /* Syms return NULL if we're marking .opd, so we avoid marking all
4834 function sections, as all functions are referenced in .opd. */
4836 if (get_opd_info (sec
) != NULL
)
4841 enum elf_ppc64_reloc_type r_type
;
4842 struct ppc_link_hash_entry
*eh
;
4844 r_type
= ELF64_R_TYPE (rel
->r_info
);
4847 case R_PPC64_GNU_VTINHERIT
:
4848 case R_PPC64_GNU_VTENTRY
:
4852 switch (h
->root
.type
)
4854 case bfd_link_hash_defined
:
4855 case bfd_link_hash_defweak
:
4856 eh
= (struct ppc_link_hash_entry
*) h
;
4857 if (eh
->oh
!= NULL
&& eh
->oh
->is_func_descriptor
)
4860 /* Function descriptor syms cause the associated
4861 function code sym section to be marked. */
4862 if (eh
->is_func_descriptor
)
4864 /* They also mark their opd section. */
4865 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4866 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4867 ppc64_elf_gc_mark_hook
);
4869 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4871 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4872 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4873 eh
->elf
.root
.u
.def
.value
,
4874 &rsec
, NULL
) != (bfd_vma
) -1)
4876 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4877 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4878 ppc64_elf_gc_mark_hook
);
4881 rsec
= h
->root
.u
.def
.section
;
4884 case bfd_link_hash_common
:
4885 rsec
= h
->root
.u
.c
.p
->section
;
4895 asection
**opd_sym_section
;
4897 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4898 opd_sym_section
= get_opd_info (rsec
);
4899 if (opd_sym_section
!= NULL
)
4902 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4904 rsec
= opd_sym_section
[sym
->st_value
/ 8];
4911 /* Update the .got, .plt. and dynamic reloc reference counts for the
4912 section being removed. */
4915 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4916 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4918 struct ppc_link_hash_table
*htab
;
4919 Elf_Internal_Shdr
*symtab_hdr
;
4920 struct elf_link_hash_entry
**sym_hashes
;
4921 struct got_entry
**local_got_ents
;
4922 const Elf_Internal_Rela
*rel
, *relend
;
4924 if ((sec
->flags
& SEC_ALLOC
) == 0)
4927 elf_section_data (sec
)->local_dynrel
= NULL
;
4929 htab
= ppc_hash_table (info
);
4930 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4931 sym_hashes
= elf_sym_hashes (abfd
);
4932 local_got_ents
= elf_local_got_ents (abfd
);
4934 relend
= relocs
+ sec
->reloc_count
;
4935 for (rel
= relocs
; rel
< relend
; rel
++)
4937 unsigned long r_symndx
;
4938 enum elf_ppc64_reloc_type r_type
;
4939 struct elf_link_hash_entry
*h
= NULL
;
4942 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4943 r_type
= ELF64_R_TYPE (rel
->r_info
);
4944 if (r_symndx
>= symtab_hdr
->sh_info
)
4946 struct ppc_link_hash_entry
*eh
;
4947 struct ppc_dyn_relocs
**pp
;
4948 struct ppc_dyn_relocs
*p
;
4950 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4951 eh
= (struct ppc_link_hash_entry
*) h
;
4953 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4956 /* Everything must go for SEC. */
4964 case R_PPC64_GOT_TLSLD16
:
4965 case R_PPC64_GOT_TLSLD16_LO
:
4966 case R_PPC64_GOT_TLSLD16_HI
:
4967 case R_PPC64_GOT_TLSLD16_HA
:
4968 ppc64_tlsld_got (abfd
)->refcount
-= 1;
4969 tls_type
= TLS_TLS
| TLS_LD
;
4972 case R_PPC64_GOT_TLSGD16
:
4973 case R_PPC64_GOT_TLSGD16_LO
:
4974 case R_PPC64_GOT_TLSGD16_HI
:
4975 case R_PPC64_GOT_TLSGD16_HA
:
4976 tls_type
= TLS_TLS
| TLS_GD
;
4979 case R_PPC64_GOT_TPREL16_DS
:
4980 case R_PPC64_GOT_TPREL16_LO_DS
:
4981 case R_PPC64_GOT_TPREL16_HI
:
4982 case R_PPC64_GOT_TPREL16_HA
:
4983 tls_type
= TLS_TLS
| TLS_TPREL
;
4986 case R_PPC64_GOT_DTPREL16_DS
:
4987 case R_PPC64_GOT_DTPREL16_LO_DS
:
4988 case R_PPC64_GOT_DTPREL16_HI
:
4989 case R_PPC64_GOT_DTPREL16_HA
:
4990 tls_type
= TLS_TLS
| TLS_DTPREL
;
4994 case R_PPC64_GOT16_DS
:
4995 case R_PPC64_GOT16_HA
:
4996 case R_PPC64_GOT16_HI
:
4997 case R_PPC64_GOT16_LO
:
4998 case R_PPC64_GOT16_LO_DS
:
5001 struct got_entry
*ent
;
5006 ent
= local_got_ents
[r_symndx
];
5008 for (; ent
!= NULL
; ent
= ent
->next
)
5009 if (ent
->addend
== rel
->r_addend
5010 && ent
->owner
== abfd
5011 && ent
->tls_type
== tls_type
)
5015 if (ent
->got
.refcount
> 0)
5016 ent
->got
.refcount
-= 1;
5020 case R_PPC64_PLT16_HA
:
5021 case R_PPC64_PLT16_HI
:
5022 case R_PPC64_PLT16_LO
:
5026 case R_PPC64_REL14_BRNTAKEN
:
5027 case R_PPC64_REL14_BRTAKEN
:
5031 struct plt_entry
*ent
;
5033 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5034 if (ent
->addend
== rel
->r_addend
)
5038 if (ent
->plt
.refcount
> 0)
5039 ent
->plt
.refcount
-= 1;
5050 /* The maximum size of .sfpr. */
5051 #define SFPR_MAX (218*4)
5053 struct sfpr_def_parms
5055 const char name
[12];
5056 unsigned char lo
, hi
;
5057 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5058 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5061 /* Auto-generate _save*, _rest* functions in .sfpr. */
5064 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5066 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5068 size_t len
= strlen (parm
->name
);
5069 bfd_boolean writing
= FALSE
;
5072 memcpy (sym
, parm
->name
, len
);
5075 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5077 struct elf_link_hash_entry
*h
;
5079 sym
[len
+ 0] = i
/ 10 + '0';
5080 sym
[len
+ 1] = i
% 10 + '0';
5081 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5083 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
5085 h
->root
.type
= bfd_link_hash_defined
;
5086 h
->root
.u
.def
.section
= htab
->sfpr
;
5087 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5089 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
5090 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5092 if (htab
->sfpr
->contents
== NULL
)
5094 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5095 if (htab
->sfpr
->contents
== NULL
)
5101 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5103 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5105 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5106 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5114 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5116 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5121 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5123 p
= savegpr0 (abfd
, p
, r
);
5124 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5126 bfd_put_32 (abfd
, BLR
, p
);
5131 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5133 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5138 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5140 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5142 p
= restgpr0 (abfd
, p
, r
);
5143 bfd_put_32 (abfd
, MTLR_R0
, p
);
5147 p
= restgpr0 (abfd
, p
, 30);
5148 p
= restgpr0 (abfd
, p
, 31);
5150 bfd_put_32 (abfd
, BLR
, p
);
5155 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5157 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5162 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5164 p
= savegpr1 (abfd
, p
, r
);
5165 bfd_put_32 (abfd
, BLR
, p
);
5170 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5172 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5177 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5179 p
= restgpr1 (abfd
, p
, r
);
5180 bfd_put_32 (abfd
, BLR
, p
);
5185 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5187 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5192 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5194 p
= savefpr (abfd
, p
, r
);
5195 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5197 bfd_put_32 (abfd
, BLR
, p
);
5202 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5204 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5209 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5211 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5213 p
= restfpr (abfd
, p
, r
);
5214 bfd_put_32 (abfd
, MTLR_R0
, p
);
5218 p
= restfpr (abfd
, p
, 30);
5219 p
= restfpr (abfd
, p
, 31);
5221 bfd_put_32 (abfd
, BLR
, p
);
5226 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5228 p
= savefpr (abfd
, p
, r
);
5229 bfd_put_32 (abfd
, BLR
, p
);
5234 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5236 p
= restfpr (abfd
, p
, r
);
5237 bfd_put_32 (abfd
, BLR
, p
);
5242 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5244 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5246 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5251 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5253 p
= savevr (abfd
, p
, r
);
5254 bfd_put_32 (abfd
, BLR
, p
);
5259 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5261 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5263 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5268 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5270 p
= restvr (abfd
, p
, r
);
5271 bfd_put_32 (abfd
, BLR
, p
);
5275 /* Called via elf_link_hash_traverse to transfer dynamic linking
5276 information on function code symbol entries to their corresponding
5277 function descriptor symbol entries. */
5280 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5282 struct bfd_link_info
*info
;
5283 struct ppc_link_hash_table
*htab
;
5284 struct plt_entry
*ent
;
5285 struct ppc_link_hash_entry
*fh
;
5286 struct ppc_link_hash_entry
*fdh
;
5287 bfd_boolean force_local
;
5289 fh
= (struct ppc_link_hash_entry
*) h
;
5290 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5293 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5294 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5297 htab
= ppc_hash_table (info
);
5299 /* Resolve undefined references to dot-symbols as the value
5300 in the function descriptor, if we have one in a regular object.
5301 This is to satisfy cases like ".quad .foo". Calls to functions
5302 in dynamic objects are handled elsewhere. */
5303 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5304 && fh
->was_undefined
5305 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5306 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5307 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5308 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5309 fh
->oh
->elf
.root
.u
.def
.value
,
5310 &fh
->elf
.root
.u
.def
.section
,
5311 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5313 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5314 fh
->elf
.elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
5317 /* If this is a function code symbol, transfer dynamic linking
5318 information to the function descriptor symbol. */
5322 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5323 if (ent
->plt
.refcount
> 0)
5326 || fh
->elf
.root
.root
.string
[0] != '.'
5327 || fh
->elf
.root
.root
.string
[1] == '\0')
5330 /* Find the corresponding function descriptor symbol. Create it
5331 as undefined if necessary. */
5333 fdh
= get_fdh (fh
, htab
);
5335 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5336 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5337 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5341 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5342 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5346 struct bfd_link_hash_entry
*bh
;
5348 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
5349 newsym
= bfd_make_empty_symbol (abfd
);
5350 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
5351 newsym
->section
= bfd_und_section_ptr
;
5353 newsym
->flags
= BSF_OBJECT
;
5354 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5355 newsym
->flags
|= BSF_WEAK
;
5357 bh
= &fdh
->elf
.root
;
5358 if ( !(_bfd_generic_link_add_one_symbol
5359 (info
, abfd
, newsym
->name
, newsym
->flags
,
5360 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
5364 fdh
= (struct ppc_link_hash_entry
*) bh
;
5365 fdh
->elf
.elf_link_hash_flags
&= ~ELF_LINK_NON_ELF
;
5367 fdh
->elf
.type
= STT_OBJECT
;
5371 && (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
5373 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
5374 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) != 0
5375 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5376 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5378 if (fdh
->elf
.dynindx
== -1)
5379 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5381 fdh
->elf
.elf_link_hash_flags
5382 |= (fh
->elf
.elf_link_hash_flags
& (ELF_LINK_HASH_REF_REGULAR
5383 | ELF_LINK_HASH_REF_DYNAMIC
5384 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
5385 | ELF_LINK_NON_GOT_REF
));
5386 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5388 struct plt_entry
**ep
= &fdh
->elf
.plt
.plist
;
5391 *ep
= fh
->elf
.plt
.plist
;
5392 fh
->elf
.plt
.plist
= NULL
;
5393 fdh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
5395 fdh
->is_func_descriptor
= 1;
5400 /* Now that the info is on the function descriptor, clear the
5401 function code sym info. Any function code syms for which we
5402 don't have a definition in a regular file, we force local.
5403 This prevents a shared library from exporting syms that have
5404 been imported from another library. Function code syms that
5405 are really in the library we must leave global to prevent the
5406 linker dragging in a definition from a static library. */
5409 && ((fh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
5411 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
5412 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0));
5413 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5418 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5419 this hook to a) provide some gcc support functions, and b) transfer
5420 dynamic linking information gathered so far on function code symbol
5421 entries, to their corresponding function descriptor symbol entries. */
5424 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5425 struct bfd_link_info
*info
)
5427 struct ppc_link_hash_table
*htab
;
5429 const struct sfpr_def_parms funcs
[] =
5431 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5432 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5433 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5434 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5435 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5436 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5437 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5438 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5439 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5440 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5441 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5442 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5445 htab
= ppc_hash_table (info
);
5446 if (htab
->sfpr
== NULL
)
5447 /* We don't have any relocs. */
5450 /* Provide any missing _save* and _rest* functions. */
5451 htab
->sfpr
->size
= 0;
5452 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5453 if (!sfpr_define (info
, &funcs
[i
]))
5456 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5458 if (htab
->sfpr
->size
== 0)
5459 _bfd_strip_section_from_output (info
, htab
->sfpr
);
5464 /* Adjust a symbol defined by a dynamic object and referenced by a
5465 regular object. The current definition is in some section of the
5466 dynamic object, but we're not including those sections. We have to
5467 change the definition to something the rest of the link can
5471 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5472 struct elf_link_hash_entry
*h
)
5474 struct ppc_link_hash_table
*htab
;
5476 unsigned int power_of_two
;
5478 htab
= ppc_hash_table (info
);
5480 /* Deal with function syms. */
5481 if (h
->type
== STT_FUNC
5482 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
5484 /* Clear procedure linkage table information for any symbol that
5485 won't need a .plt entry. */
5486 struct plt_entry
*ent
;
5487 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5488 if (ent
->plt
.refcount
> 0)
5491 || SYMBOL_CALLS_LOCAL (info
, h
)
5492 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5493 && h
->root
.type
== bfd_link_hash_undefweak
))
5495 h
->plt
.plist
= NULL
;
5496 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5500 h
->plt
.plist
= NULL
;
5502 /* If this is a weak symbol, and there is a real definition, the
5503 processor independent code will have arranged for us to see the
5504 real definition first, and we can just use the same value. */
5505 if (h
->weakdef
!= NULL
)
5507 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
5508 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
5509 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
5510 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
5511 if (ELIMINATE_COPY_RELOCS
)
5512 h
->elf_link_hash_flags
5513 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
5514 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
5518 /* If we are creating a shared library, we must presume that the
5519 only references to the symbol are via the global offset table.
5520 For such cases we need not do anything here; the relocations will
5521 be handled correctly by relocate_section. */
5525 /* If there are no references to this symbol that do not use the
5526 GOT, we don't need to generate a copy reloc. */
5527 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
5530 if (ELIMINATE_COPY_RELOCS
)
5532 struct ppc_link_hash_entry
* eh
;
5533 struct ppc_dyn_relocs
*p
;
5535 eh
= (struct ppc_link_hash_entry
*) h
;
5536 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5538 s
= p
->sec
->output_section
;
5539 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5543 /* If we didn't find any dynamic relocs in read-only sections, then
5544 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5547 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
5552 if (h
->plt
.plist
!= NULL
)
5554 /* We should never get here, but unfortunately there are versions
5555 of gcc out there that improperly (for this ABI) put initialized
5556 function pointers, vtable refs and suchlike in read-only
5557 sections. Allow them to proceed, but warn that this might
5558 break at runtime. */
5559 (*_bfd_error_handler
)
5560 (_("copy reloc against `%s' requires lazy plt linking; "
5561 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5562 h
->root
.root
.string
);
5565 /* This is a reference to a symbol defined by a dynamic object which
5566 is not a function. */
5568 /* We must allocate the symbol in our .dynbss section, which will
5569 become part of the .bss section of the executable. There will be
5570 an entry for this symbol in the .dynsym section. The dynamic
5571 object will contain position independent code, so all references
5572 from the dynamic object to this symbol will go through the global
5573 offset table. The dynamic linker will use the .dynsym entry to
5574 determine the address it must put in the global offset table, so
5575 both the dynamic object and the regular object will refer to the
5576 same memory location for the variable. */
5578 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5579 to copy the initial value out of the dynamic object and into the
5580 runtime process image. We need to remember the offset into the
5581 .rela.bss section we are going to use. */
5582 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5584 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5585 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
5588 /* We need to figure out the alignment required for this symbol. I
5589 have no idea how ELF linkers handle this. */
5590 power_of_two
= bfd_log2 (h
->size
);
5591 if (power_of_two
> 4)
5594 /* Apply the required alignment. */
5596 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5597 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5599 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5603 /* Define the symbol as being at this point in the section. */
5604 h
->root
.u
.def
.section
= s
;
5605 h
->root
.u
.def
.value
= s
->size
;
5607 /* Increment the section size to make room for the symbol. */
5613 /* If given a function descriptor symbol, hide both the function code
5614 sym and the descriptor. */
5616 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5617 struct elf_link_hash_entry
*h
,
5618 bfd_boolean force_local
)
5620 struct ppc_link_hash_entry
*eh
;
5621 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5623 eh
= (struct ppc_link_hash_entry
*) h
;
5624 if (eh
->is_func_descriptor
)
5626 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5631 struct ppc_link_hash_table
*htab
;
5634 /* We aren't supposed to use alloca in BFD because on
5635 systems which do not have alloca the version in libiberty
5636 calls xmalloc, which might cause the program to crash
5637 when it runs out of memory. This function doesn't have a
5638 return status, so there's no way to gracefully return an
5639 error. So cheat. We know that string[-1] can be safely
5640 accessed; It's either a string in an ELF string table,
5641 or allocated in an objalloc structure. */
5643 p
= eh
->elf
.root
.root
.string
- 1;
5646 htab
= ppc_hash_table (info
);
5647 fh
= (struct ppc_link_hash_entry
*)
5648 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5651 /* Unfortunately, if it so happens that the string we were
5652 looking for was allocated immediately before this string,
5653 then we overwrote the string terminator. That's the only
5654 reason the lookup should fail. */
5657 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5658 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5660 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5661 fh
= (struct ppc_link_hash_entry
*)
5662 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5671 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5676 get_sym_h (struct elf_link_hash_entry
**hp
,
5677 Elf_Internal_Sym
**symp
,
5680 Elf_Internal_Sym
**locsymsp
,
5681 unsigned long r_symndx
,
5684 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5686 if (r_symndx
>= symtab_hdr
->sh_info
)
5688 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5689 struct elf_link_hash_entry
*h
;
5691 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5692 while (h
->root
.type
== bfd_link_hash_indirect
5693 || h
->root
.type
== bfd_link_hash_warning
)
5694 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5702 if (symsecp
!= NULL
)
5704 asection
*symsec
= NULL
;
5705 if (h
->root
.type
== bfd_link_hash_defined
5706 || h
->root
.type
== bfd_link_hash_defweak
)
5707 symsec
= h
->root
.u
.def
.section
;
5711 if (tls_maskp
!= NULL
)
5713 struct ppc_link_hash_entry
*eh
;
5715 eh
= (struct ppc_link_hash_entry
*) h
;
5716 *tls_maskp
= &eh
->tls_mask
;
5721 Elf_Internal_Sym
*sym
;
5722 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5724 if (locsyms
== NULL
)
5726 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5727 if (locsyms
== NULL
)
5728 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5729 symtab_hdr
->sh_info
,
5730 0, NULL
, NULL
, NULL
);
5731 if (locsyms
== NULL
)
5733 *locsymsp
= locsyms
;
5735 sym
= locsyms
+ r_symndx
;
5743 if (symsecp
!= NULL
)
5745 asection
*symsec
= NULL
;
5746 if ((sym
->st_shndx
!= SHN_UNDEF
5747 && sym
->st_shndx
< SHN_LORESERVE
)
5748 || sym
->st_shndx
> SHN_HIRESERVE
)
5749 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5753 if (tls_maskp
!= NULL
)
5755 struct got_entry
**lgot_ents
;
5759 lgot_ents
= elf_local_got_ents (ibfd
);
5760 if (lgot_ents
!= NULL
)
5762 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5763 tls_mask
= &lgot_masks
[r_symndx
];
5765 *tls_maskp
= tls_mask
;
5771 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5772 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5773 type suitable for optimization, and 1 otherwise. */
5776 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5777 Elf_Internal_Sym
**locsymsp
,
5778 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5780 unsigned long r_symndx
;
5782 struct elf_link_hash_entry
*h
;
5783 Elf_Internal_Sym
*sym
;
5787 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5788 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5791 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5793 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5796 /* Look inside a TOC section too. */
5799 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5800 off
= h
->root
.u
.def
.value
;
5803 off
= sym
->st_value
;
5804 off
+= rel
->r_addend
;
5805 BFD_ASSERT (off
% 8 == 0);
5806 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5807 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5808 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5810 if (toc_symndx
!= NULL
)
5811 *toc_symndx
= r_symndx
;
5813 || ((h
->root
.type
== bfd_link_hash_defined
5814 || h
->root
.type
== bfd_link_hash_defweak
)
5815 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
5816 && (next_r
== -1 || next_r
== -2))
5821 /* Adjust all global syms defined in opd sections. In gcc generated
5822 code for the old ABI, these will already have been done. */
5825 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5827 struct ppc_link_hash_entry
*eh
;
5831 if (h
->root
.type
== bfd_link_hash_indirect
)
5834 if (h
->root
.type
== bfd_link_hash_warning
)
5835 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5837 if (h
->root
.type
!= bfd_link_hash_defined
5838 && h
->root
.type
!= bfd_link_hash_defweak
)
5841 eh
= (struct ppc_link_hash_entry
*) h
;
5842 if (eh
->adjust_done
)
5845 sym_sec
= eh
->elf
.root
.u
.def
.section
;
5846 opd_adjust
= get_opd_info (sym_sec
);
5847 if (opd_adjust
!= NULL
)
5849 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
5852 /* This entry has been deleted. */
5853 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
5856 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
5857 if (elf_discarded_section (dsec
))
5859 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
5863 eh
->elf
.root
.u
.def
.value
= 0;
5864 eh
->elf
.root
.u
.def
.section
= dsec
;
5867 eh
->elf
.root
.u
.def
.value
+= adjust
;
5868 eh
->adjust_done
= 1;
5873 /* Remove unused Official Procedure Descriptor entries. Currently we
5874 only remove those associated with functions in discarded link-once
5875 sections, or weakly defined functions that have been overridden. It
5876 would be possible to remove many more entries for statically linked
5880 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
5881 bfd_boolean non_overlapping
)
5884 bfd_boolean some_edited
= FALSE
;
5885 asection
*need_pad
= NULL
;
5887 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5890 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5891 Elf_Internal_Shdr
*symtab_hdr
;
5892 Elf_Internal_Sym
*local_syms
;
5893 struct elf_link_hash_entry
**sym_hashes
;
5897 bfd_boolean need_edit
, add_aux_fields
;
5898 bfd_size_type cnt_16b
= 0;
5900 sec
= bfd_get_section_by_name (ibfd
, ".opd");
5904 amt
= sec
->size
* sizeof (long) / 8;
5905 opd_adjust
= get_opd_info (sec
);
5906 if (opd_adjust
== NULL
)
5908 /* Must be a ld -r link. ie. check_relocs hasn't been
5910 opd_adjust
= bfd_zalloc (obfd
, amt
);
5911 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
5913 memset (opd_adjust
, 0, amt
);
5915 if (sec
->output_section
== bfd_abs_section_ptr
)
5918 /* Look through the section relocs. */
5919 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
5923 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5924 sym_hashes
= elf_sym_hashes (ibfd
);
5926 /* Read the relocations. */
5927 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5929 if (relstart
== NULL
)
5932 /* First run through the relocs to check they are sane, and to
5933 determine whether we need to edit this opd section. */
5937 relend
= relstart
+ sec
->reloc_count
;
5938 for (rel
= relstart
; rel
< relend
; )
5940 enum elf_ppc64_reloc_type r_type
;
5941 unsigned long r_symndx
;
5943 struct elf_link_hash_entry
*h
;
5944 Elf_Internal_Sym
*sym
;
5946 /* .opd contains a regular array of 16 or 24 byte entries. We're
5947 only interested in the reloc pointing to a function entry
5949 if (rel
->r_offset
!= offset
5950 || rel
+ 1 >= relend
5951 || (rel
+ 1)->r_offset
!= offset
+ 8)
5953 /* If someone messes with .opd alignment then after a
5954 "ld -r" we might have padding in the middle of .opd.
5955 Also, there's nothing to prevent someone putting
5956 something silly in .opd with the assembler. No .opd
5957 optimization for them! */
5959 (*_bfd_error_handler
)
5960 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
5965 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
5966 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
5968 (*_bfd_error_handler
)
5969 (_("%B: unexpected reloc type %u in .opd section"),
5975 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5976 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
5980 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
5982 const char *sym_name
;
5984 sym_name
= h
->root
.root
.string
;
5986 sym_name
= bfd_elf_local_sym_name (ibfd
, sym
);
5988 (*_bfd_error_handler
)
5989 (_("%B: undefined sym `%s' in .opd section"),
5995 /* opd entries are always for functions defined in the
5996 current input bfd. If the symbol isn't defined in the
5997 input bfd, then we won't be using the function in this
5998 bfd; It must be defined in a linkonce section in another
5999 bfd, or is weak. It's also possible that we are
6000 discarding the function due to a linker script /DISCARD/,
6001 which we test for via the output_section. */
6002 if (sym_sec
->owner
!= ibfd
6003 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6008 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6010 if (sec
->size
== offset
+ 24)
6015 if (rel
== relend
&& sec
->size
== offset
+ 16)
6023 if (rel
->r_offset
== offset
+ 24)
6025 else if (rel
->r_offset
!= offset
+ 16)
6027 else if (rel
+ 1 < relend
6028 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6029 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6034 else if (rel
+ 2 < relend
6035 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6036 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6045 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6047 if (need_edit
|| add_aux_fields
)
6049 Elf_Internal_Rela
*write_rel
;
6050 bfd_byte
*rptr
, *wptr
;
6051 bfd_byte
*new_contents
= NULL
;
6055 /* This seems a waste of time as input .opd sections are all
6056 zeros as generated by gcc, but I suppose there's no reason
6057 this will always be so. We might start putting something in
6058 the third word of .opd entries. */
6059 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6062 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6067 if (local_syms
!= NULL
6068 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6070 if (elf_section_data (sec
)->relocs
!= relstart
)
6074 sec
->contents
= loc
;
6075 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6078 elf_section_data (sec
)->relocs
= relstart
;
6080 wptr
= sec
->contents
;
6081 rptr
= sec
->contents
;
6082 new_contents
= sec
->contents
;
6086 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6087 if (new_contents
== NULL
)
6090 wptr
= new_contents
;
6093 write_rel
= relstart
;
6097 for (rel
= relstart
; rel
< relend
; rel
++)
6099 unsigned long r_symndx
;
6101 struct elf_link_hash_entry
*h
;
6102 Elf_Internal_Sym
*sym
;
6104 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6105 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6109 if (rel
->r_offset
== offset
)
6111 struct ppc_link_hash_entry
*fdh
= NULL
;
6113 /* See if the .opd entry is full 24 byte or
6114 16 byte (with fd_aux entry overlapped with next
6117 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6118 || (rel
+ 3 < relend
6119 && rel
[2].r_offset
== offset
+ 16
6120 && rel
[3].r_offset
== offset
+ 24
6121 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6122 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6126 && h
->root
.root
.string
[0] == '.')
6127 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6128 ppc_hash_table (info
));
6130 skip
= (sym_sec
->owner
!= ibfd
6131 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6134 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6136 /* Arrange for the function descriptor sym
6138 fdh
->elf
.root
.u
.def
.value
= 0;
6139 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6141 opd_adjust
[rel
->r_offset
/ 8] = -1;
6145 /* We'll be keeping this opd entry. */
6149 /* Redefine the function descriptor symbol to
6150 this location in the opd section. It is
6151 necessary to update the value here rather
6152 than using an array of adjustments as we do
6153 for local symbols, because various places
6154 in the generic ELF code use the value
6155 stored in u.def.value. */
6156 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6157 fdh
->adjust_done
= 1;
6160 /* Local syms are a bit tricky. We could
6161 tweak them as they can be cached, but
6162 we'd need to look through the local syms
6163 for the function descriptor sym which we
6164 don't have at the moment. So keep an
6165 array of adjustments. */
6166 opd_adjust
[rel
->r_offset
/ 8]
6167 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6170 memcpy (wptr
, rptr
, opd_ent_size
);
6171 wptr
+= opd_ent_size
;
6172 if (add_aux_fields
&& opd_ent_size
== 16)
6174 memset (wptr
, '\0', 8);
6178 rptr
+= opd_ent_size
;
6179 offset
+= opd_ent_size
;
6184 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
6187 /* We won't be needing dynamic relocs here. */
6188 struct ppc_dyn_relocs
**pp
;
6189 struct ppc_dyn_relocs
*p
;
6192 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6193 else if (sym_sec
!= NULL
)
6194 pp
= ((struct ppc_dyn_relocs
**)
6195 &elf_section_data (sym_sec
)->local_dynrel
);
6197 pp
= ((struct ppc_dyn_relocs
**)
6198 &elf_section_data (sec
)->local_dynrel
);
6199 while ((p
= *pp
) != NULL
)
6214 /* We need to adjust any reloc offsets to point to the
6215 new opd entries. While we're at it, we may as well
6216 remove redundant relocs. */
6217 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6218 if (write_rel
!= rel
)
6219 memcpy (write_rel
, rel
, sizeof (*rel
));
6224 sec
->size
= wptr
- new_contents
;
6225 sec
->reloc_count
= write_rel
- relstart
;
6228 free (sec
->contents
);
6229 sec
->contents
= new_contents
;
6232 /* Fudge the size too, as this is used later in
6233 elf_bfd_final_link if we are emitting relocs. */
6234 elf_section_data (sec
)->rel_hdr
.sh_size
6235 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6236 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6239 else if (elf_section_data (sec
)->relocs
!= relstart
)
6242 if (local_syms
!= NULL
6243 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6245 if (!info
->keep_memory
)
6248 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6253 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6255 /* If we are doing a final link and the last .opd entry is just 16 byte
6256 long, add a 8 byte padding after it. */
6257 if (need_pad
!= NULL
&& !info
->relocatable
)
6261 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6263 BFD_ASSERT (need_pad
->size
> 0);
6265 p
= bfd_malloc (need_pad
->size
+ 8);
6269 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6270 p
, 0, need_pad
->size
))
6273 need_pad
->contents
= p
;
6274 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6278 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6282 need_pad
->contents
= p
;
6285 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6286 need_pad
->size
+= 8;
6292 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6295 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6297 struct ppc_link_hash_table
*htab
;
6299 htab
= ppc_hash_table (info
);
6300 if (htab
->tls_get_addr
!= NULL
)
6302 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6304 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6305 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6306 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6308 htab
->tls_get_addr
= h
;
6310 if (htab
->tls_get_addr_fd
== NULL
6312 && h
->oh
->is_func_descriptor
)
6313 htab
->tls_get_addr_fd
= h
->oh
;
6316 if (htab
->tls_get_addr_fd
!= NULL
)
6318 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6320 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6321 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6322 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6324 htab
->tls_get_addr_fd
= h
;
6327 return _bfd_elf_tls_setup (obfd
, info
);
6330 /* Run through all the TLS relocs looking for optimization
6331 opportunities. The linker has been hacked (see ppc64elf.em) to do
6332 a preliminary section layout so that we know the TLS segment
6333 offsets. We can't optimize earlier because some optimizations need
6334 to know the tp offset, and we need to optimize before allocating
6335 dynamic relocations. */
6338 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6342 struct ppc_link_hash_table
*htab
;
6344 if (info
->relocatable
|| info
->shared
)
6347 htab
= ppc_hash_table (info
);
6348 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6350 Elf_Internal_Sym
*locsyms
= NULL
;
6352 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6353 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6355 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6356 int expecting_tls_get_addr
;
6358 /* Read the relocations. */
6359 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6361 if (relstart
== NULL
)
6364 expecting_tls_get_addr
= 0;
6365 relend
= relstart
+ sec
->reloc_count
;
6366 for (rel
= relstart
; rel
< relend
; rel
++)
6368 enum elf_ppc64_reloc_type r_type
;
6369 unsigned long r_symndx
;
6370 struct elf_link_hash_entry
*h
;
6371 Elf_Internal_Sym
*sym
;
6374 char tls_set
, tls_clear
, tls_type
= 0;
6376 bfd_boolean ok_tprel
, is_local
;
6378 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6379 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6383 if (elf_section_data (sec
)->relocs
!= relstart
)
6386 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6387 != (unsigned char *) locsyms
))
6394 if (h
->root
.type
!= bfd_link_hash_defined
6395 && h
->root
.type
!= bfd_link_hash_defweak
)
6397 value
= h
->root
.u
.def
.value
;
6400 /* Symbols referenced by TLS relocs must be of type
6401 STT_TLS. So no need for .opd local sym adjust. */
6402 value
= sym
->st_value
;
6407 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
6410 value
+= sym_sec
->output_offset
;
6411 value
+= sym_sec
->output_section
->vma
;
6412 value
-= htab
->elf
.tls_sec
->vma
;
6413 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6414 < (bfd_vma
) 1 << 32);
6417 r_type
= ELF64_R_TYPE (rel
->r_info
);
6420 case R_PPC64_GOT_TLSLD16
:
6421 case R_PPC64_GOT_TLSLD16_LO
:
6422 case R_PPC64_GOT_TLSLD16_HI
:
6423 case R_PPC64_GOT_TLSLD16_HA
:
6424 /* These relocs should never be against a symbol
6425 defined in a shared lib. Leave them alone if
6426 that turns out to be the case. */
6427 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6434 tls_type
= TLS_TLS
| TLS_LD
;
6435 expecting_tls_get_addr
= 1;
6438 case R_PPC64_GOT_TLSGD16
:
6439 case R_PPC64_GOT_TLSGD16_LO
:
6440 case R_PPC64_GOT_TLSGD16_HI
:
6441 case R_PPC64_GOT_TLSGD16_HA
:
6447 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6449 tls_type
= TLS_TLS
| TLS_GD
;
6450 expecting_tls_get_addr
= 1;
6453 case R_PPC64_GOT_TPREL16_DS
:
6454 case R_PPC64_GOT_TPREL16_LO_DS
:
6455 case R_PPC64_GOT_TPREL16_HI
:
6456 case R_PPC64_GOT_TPREL16_HA
:
6457 expecting_tls_get_addr
= 0;
6462 tls_clear
= TLS_TPREL
;
6463 tls_type
= TLS_TLS
| TLS_TPREL
;
6470 case R_PPC64_REL14_BRTAKEN
:
6471 case R_PPC64_REL14_BRNTAKEN
:
6474 && (h
== &htab
->tls_get_addr
->elf
6475 || h
== &htab
->tls_get_addr_fd
->elf
))
6477 if (!expecting_tls_get_addr
6479 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6481 || (ELF64_R_TYPE (rel
[-1].r_info
)
6482 == R_PPC64_TOC16_LO
)))
6484 /* Check for toc tls entries. */
6488 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6492 if (toc_tls
!= NULL
)
6493 expecting_tls_get_addr
= retval
> 1;
6496 if (expecting_tls_get_addr
)
6498 struct plt_entry
*ent
;
6499 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6500 if (ent
->addend
== 0)
6502 if (ent
->plt
.refcount
> 0)
6503 ent
->plt
.refcount
-= 1;
6508 expecting_tls_get_addr
= 0;
6511 case R_PPC64_TPREL64
:
6512 expecting_tls_get_addr
= 0;
6516 tls_set
= TLS_EXPLICIT
;
6517 tls_clear
= TLS_TPREL
;
6523 case R_PPC64_DTPMOD64
:
6524 expecting_tls_get_addr
= 0;
6525 if (rel
+ 1 < relend
6527 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6528 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6532 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6535 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6544 tls_set
= TLS_EXPLICIT
;
6550 expecting_tls_get_addr
= 0;
6554 if ((tls_set
& TLS_EXPLICIT
) == 0)
6556 struct got_entry
*ent
;
6558 /* Adjust got entry for this reloc. */
6562 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6564 for (; ent
!= NULL
; ent
= ent
->next
)
6565 if (ent
->addend
== rel
->r_addend
6566 && ent
->owner
== ibfd
6567 && ent
->tls_type
== tls_type
)
6574 /* We managed to get rid of a got entry. */
6575 if (ent
->got
.refcount
> 0)
6576 ent
->got
.refcount
-= 1;
6581 struct ppc_link_hash_entry
* eh
;
6582 struct ppc_dyn_relocs
**pp
;
6583 struct ppc_dyn_relocs
*p
;
6585 /* Adjust dynamic relocs. */
6586 eh
= (struct ppc_link_hash_entry
*) h
;
6587 for (pp
= &eh
->dyn_relocs
;
6592 /* If we got rid of a DTPMOD/DTPREL reloc
6593 pair then we'll lose one or two dyn
6595 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6604 *tls_mask
|= tls_set
;
6605 *tls_mask
&= ~tls_clear
;
6608 if (elf_section_data (sec
)->relocs
!= relstart
)
6613 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6614 != (unsigned char *) locsyms
))
6616 if (!info
->keep_memory
)
6619 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6625 /* Allocate space in .plt, .got and associated reloc sections for
6629 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
6631 struct bfd_link_info
*info
;
6632 struct ppc_link_hash_table
*htab
;
6634 struct ppc_link_hash_entry
*eh
;
6635 struct ppc_dyn_relocs
*p
;
6636 struct got_entry
*gent
;
6638 if (h
->root
.type
== bfd_link_hash_indirect
)
6641 if (h
->root
.type
== bfd_link_hash_warning
)
6642 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6644 info
= (struct bfd_link_info
*) inf
;
6645 htab
= ppc_hash_table (info
);
6647 if (htab
->elf
.dynamic_sections_created
6649 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
6651 struct plt_entry
*pent
;
6652 bfd_boolean doneone
= FALSE
;
6653 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
6654 if (pent
->plt
.refcount
> 0)
6656 /* If this is the first .plt entry, make room for the special
6660 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
6662 pent
->plt
.offset
= s
->size
;
6664 /* Make room for this entry. */
6665 s
->size
+= PLT_ENTRY_SIZE
;
6667 /* Make room for the .glink code. */
6670 s
->size
+= GLINK_CALL_STUB_SIZE
;
6671 /* We need bigger stubs past index 32767. */
6672 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
6676 /* We also need to make an entry in the .rela.plt section. */
6678 s
->size
+= sizeof (Elf64_External_Rela
);
6682 pent
->plt
.offset
= (bfd_vma
) -1;
6685 h
->plt
.plist
= NULL
;
6686 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
6691 h
->plt
.plist
= NULL
;
6692 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
6695 eh
= (struct ppc_link_hash_entry
*) h
;
6696 /* Run through the TLS GD got entries first if we're changing them
6698 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
6699 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
6700 if (gent
->got
.refcount
> 0
6701 && (gent
->tls_type
& TLS_GD
) != 0)
6703 /* This was a GD entry that has been converted to TPREL. If
6704 there happens to be a TPREL entry we can use that one. */
6705 struct got_entry
*ent
;
6706 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
6707 if (ent
->got
.refcount
> 0
6708 && (ent
->tls_type
& TLS_TPREL
) != 0
6709 && ent
->addend
== gent
->addend
6710 && ent
->owner
== gent
->owner
)
6712 gent
->got
.refcount
= 0;
6716 /* If not, then we'll be using our own TPREL entry. */
6717 if (gent
->got
.refcount
!= 0)
6718 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
6721 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
6722 if (gent
->got
.refcount
> 0)
6726 /* Make sure this symbol is output as a dynamic symbol.
6727 Undefined weak syms won't yet be marked as dynamic,
6728 nor will all TLS symbols. */
6729 if (h
->dynindx
== -1
6730 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6732 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6736 if ((gent
->tls_type
& TLS_LD
) != 0
6737 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
6739 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
6743 s
= ppc64_elf_tdata (gent
->owner
)->got
;
6744 gent
->got
.offset
= s
->size
;
6746 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
6747 dyn
= htab
->elf
.dynamic_sections_created
;
6749 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
6750 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6751 || h
->root
.type
!= bfd_link_hash_undefweak
))
6752 ppc64_elf_tdata (gent
->owner
)->relgot
->size
6753 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
6754 ? 2 * sizeof (Elf64_External_Rela
)
6755 : sizeof (Elf64_External_Rela
));
6758 gent
->got
.offset
= (bfd_vma
) -1;
6760 if (eh
->dyn_relocs
== NULL
)
6763 /* In the shared -Bsymbolic case, discard space allocated for
6764 dynamic pc-relative relocs against symbols which turn out to be
6765 defined in regular objects. For the normal shared case, discard
6766 space for relocs that have become local due to symbol visibility
6771 /* Relocs that use pc_count are those that appear on a call insn,
6772 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6773 generated via assembly. We want calls to protected symbols to
6774 resolve directly to the function rather than going via the plt.
6775 If people want function pointer comparisons to work as expected
6776 then they should avoid writing weird assembly. */
6777 if (SYMBOL_CALLS_LOCAL (info
, h
))
6779 struct ppc_dyn_relocs
**pp
;
6781 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6783 p
->count
-= p
->pc_count
;
6792 /* Also discard relocs on undefined weak syms with non-default
6794 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6795 && h
->root
.type
== bfd_link_hash_undefweak
)
6796 eh
->dyn_relocs
= NULL
;
6798 else if (ELIMINATE_COPY_RELOCS
)
6800 /* For the non-shared case, discard space for relocs against
6801 symbols which turn out to need copy relocs or are not
6804 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
6805 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
6806 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
6808 /* Make sure this symbol is output as a dynamic symbol.
6809 Undefined weak syms won't yet be marked as dynamic. */
6810 if (h
->dynindx
== -1
6811 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6813 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6817 /* If that succeeded, we know we'll be keeping all the
6819 if (h
->dynindx
!= -1)
6823 eh
->dyn_relocs
= NULL
;
6828 /* Finally, allocate space. */
6829 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6831 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6832 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6838 /* Find any dynamic relocs that apply to read-only sections. */
6841 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
6843 struct ppc_link_hash_entry
*eh
;
6844 struct ppc_dyn_relocs
*p
;
6846 if (h
->root
.type
== bfd_link_hash_warning
)
6847 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6849 eh
= (struct ppc_link_hash_entry
*) h
;
6850 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6852 asection
*s
= p
->sec
->output_section
;
6854 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6856 struct bfd_link_info
*info
= inf
;
6858 info
->flags
|= DF_TEXTREL
;
6860 /* Not an error, just cut short the traversal. */
6867 /* Set the sizes of the dynamic sections. */
6870 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6871 struct bfd_link_info
*info
)
6873 struct ppc_link_hash_table
*htab
;
6879 htab
= ppc_hash_table (info
);
6880 dynobj
= htab
->elf
.dynobj
;
6884 if (htab
->elf
.dynamic_sections_created
)
6886 /* Set the contents of the .interp section to the interpreter. */
6887 if (info
->executable
)
6889 s
= bfd_get_section_by_name (dynobj
, ".interp");
6892 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6893 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6897 /* Set up .got offsets for local syms, and space for local dynamic
6899 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6901 struct got_entry
**lgot_ents
;
6902 struct got_entry
**end_lgot_ents
;
6904 bfd_size_type locsymcount
;
6905 Elf_Internal_Shdr
*symtab_hdr
;
6908 if (!is_ppc64_elf_target (ibfd
->xvec
))
6911 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
6913 s
= ppc64_elf_tdata (ibfd
)->got
;
6914 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6918 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6919 srel
->size
+= sizeof (Elf64_External_Rela
);
6923 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
6925 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6927 struct ppc_dyn_relocs
*p
;
6929 for (p
= *((struct ppc_dyn_relocs
**)
6930 &elf_section_data (s
)->local_dynrel
);
6934 if (!bfd_is_abs_section (p
->sec
)
6935 && bfd_is_abs_section (p
->sec
->output_section
))
6937 /* Input section has been discarded, either because
6938 it is a copy of a linkonce section or due to
6939 linker script /DISCARD/, so we'll be discarding
6942 else if (p
->count
!= 0)
6944 srel
= elf_section_data (p
->sec
)->sreloc
;
6945 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6946 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
6947 info
->flags
|= DF_TEXTREL
;
6952 lgot_ents
= elf_local_got_ents (ibfd
);
6956 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6957 locsymcount
= symtab_hdr
->sh_info
;
6958 end_lgot_ents
= lgot_ents
+ locsymcount
;
6959 lgot_masks
= (char *) end_lgot_ents
;
6960 s
= ppc64_elf_tdata (ibfd
)->got
;
6961 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6962 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
6964 struct got_entry
*ent
;
6966 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
6967 if (ent
->got
.refcount
> 0)
6969 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
6971 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
6973 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6976 srel
->size
+= sizeof (Elf64_External_Rela
);
6978 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
6982 ent
->got
.offset
= s
->size
;
6983 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
6987 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
6993 srel
->size
+= sizeof (Elf64_External_Rela
);
6998 ent
->got
.offset
= (bfd_vma
) -1;
7002 /* Allocate global sym .plt and .got entries, and space for global
7003 sym dynamic relocs. */
7004 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7006 /* We now have determined the sizes of the various dynamic sections.
7007 Allocate memory for them. */
7009 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7011 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7014 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7015 /* These haven't been allocated yet; don't strip. */
7017 else if (s
== htab
->got
7019 || s
== htab
->glink
)
7021 /* Strip this section if we don't need it; see the
7024 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7028 /* If we don't need this section, strip it from the
7029 output file. This is mostly to handle .rela.bss and
7030 .rela.plt. We must create both sections in
7031 create_dynamic_sections, because they must be created
7032 before the linker maps input sections to output
7033 sections. The linker does that before
7034 adjust_dynamic_symbol is called, and it is that
7035 function which decides whether anything needs to go
7036 into these sections. */
7040 if (s
!= htab
->relplt
)
7043 /* We use the reloc_count field as a counter if we need
7044 to copy relocs into the output file. */
7050 /* It's not one of our sections, so don't allocate space. */
7056 _bfd_strip_section_from_output (info
, s
);
7060 /* .plt is in the bss section. We don't initialise it. */
7064 /* Allocate memory for the section contents. We use bfd_zalloc
7065 here in case unused entries are not reclaimed before the
7066 section's contents are written out. This should not happen,
7067 but this way if it does we get a R_PPC64_NONE reloc in .rela
7068 sections instead of garbage.
7069 We also rely on the section contents being zero when writing
7071 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7072 if (s
->contents
== NULL
)
7076 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7078 if (!is_ppc64_elf_target (ibfd
->xvec
))
7081 s
= ppc64_elf_tdata (ibfd
)->got
;
7082 if (s
!= NULL
&& s
!= htab
->got
)
7085 _bfd_strip_section_from_output (info
, s
);
7088 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7089 if (s
->contents
== NULL
)
7093 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7097 _bfd_strip_section_from_output (info
, s
);
7100 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7101 if (s
->contents
== NULL
)
7109 if (htab
->elf
.dynamic_sections_created
)
7111 /* Add some entries to the .dynamic section. We fill in the
7112 values later, in ppc64_elf_finish_dynamic_sections, but we
7113 must add the entries now so that we get the correct size for
7114 the .dynamic section. The DT_DEBUG entry is filled in by the
7115 dynamic linker and used by the debugger. */
7116 #define add_dynamic_entry(TAG, VAL) \
7117 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7119 if (info
->executable
)
7121 if (!add_dynamic_entry (DT_DEBUG
, 0))
7125 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7127 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7128 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7129 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7130 || !add_dynamic_entry (DT_JMPREL
, 0)
7131 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7137 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7138 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7144 if (!add_dynamic_entry (DT_RELA
, 0)
7145 || !add_dynamic_entry (DT_RELASZ
, 0)
7146 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7149 /* If any dynamic relocs apply to a read-only section,
7150 then we need a DT_TEXTREL entry. */
7151 if ((info
->flags
& DF_TEXTREL
) == 0)
7152 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7154 if ((info
->flags
& DF_TEXTREL
) != 0)
7156 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7161 #undef add_dynamic_entry
7166 /* Determine the type of stub needed, if any, for a call. */
7168 static inline enum ppc_stub_type
7169 ppc_type_of_stub (asection
*input_sec
,
7170 const Elf_Internal_Rela
*rel
,
7171 struct ppc_link_hash_entry
**hash
,
7172 bfd_vma destination
)
7174 struct ppc_link_hash_entry
*h
= *hash
;
7176 bfd_vma branch_offset
;
7177 bfd_vma max_branch_offset
;
7178 enum elf_ppc64_reloc_type r_type
;
7183 && h
->oh
->is_func_descriptor
)
7186 if (h
->elf
.dynindx
!= -1)
7188 struct plt_entry
*ent
;
7190 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7191 if (ent
->addend
== rel
->r_addend
7192 && ent
->plt
.offset
!= (bfd_vma
) -1)
7195 return ppc_stub_plt_call
;
7199 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7200 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7201 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7202 return ppc_stub_none
;
7205 /* Determine where the call point is. */
7206 location
= (input_sec
->output_offset
7207 + input_sec
->output_section
->vma
7210 branch_offset
= destination
- location
;
7211 r_type
= ELF64_R_TYPE (rel
->r_info
);
7213 /* Determine if a long branch stub is needed. */
7214 max_branch_offset
= 1 << 25;
7215 if (r_type
!= R_PPC64_REL24
)
7216 max_branch_offset
= 1 << 15;
7218 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7219 /* We need a stub. Figure out whether a long_branch or plt_branch
7221 return ppc_stub_long_branch
;
7223 return ppc_stub_none
;
7226 /* Build a .plt call stub. */
7228 static inline bfd_byte
*
7229 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7231 #define PPC_LO(v) ((v) & 0xffff)
7232 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7233 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7235 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7236 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7237 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7238 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7239 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7241 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7242 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7243 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7245 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7246 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7247 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7252 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7254 struct ppc_stub_hash_entry
*stub_entry
;
7255 struct ppc_branch_hash_entry
*br_entry
;
7256 struct bfd_link_info
*info
;
7257 struct ppc_link_hash_table
*htab
;
7261 struct plt_entry
*ent
;
7265 /* Massage our args to the form they really have. */
7266 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7269 htab
= ppc_hash_table (info
);
7271 /* Make a note of the offset within the stubs for this entry. */
7272 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7273 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7275 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7276 switch (stub_entry
->stub_type
)
7278 case ppc_stub_long_branch
:
7279 case ppc_stub_long_branch_r2off
:
7280 /* Branches are relative. This is where we are going to. */
7281 off
= dest
= (stub_entry
->target_value
7282 + stub_entry
->target_section
->output_offset
7283 + stub_entry
->target_section
->output_section
->vma
);
7285 /* And this is where we are coming from. */
7286 off
-= (stub_entry
->stub_offset
7287 + stub_entry
->stub_sec
->output_offset
7288 + stub_entry
->stub_sec
->output_section
->vma
);
7290 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
7296 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7297 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7298 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7300 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7302 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7307 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
7309 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
7311 if (info
->emitrelocations
)
7313 Elf_Internal_Rela
*relocs
, *r
;
7314 struct bfd_elf_section_data
*elfsec_data
;
7316 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
7317 relocs
= elfsec_data
->relocs
;
7320 bfd_size_type relsize
;
7321 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
7322 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
7325 elfsec_data
->relocs
= relocs
;
7326 elfsec_data
->rel_hdr
.sh_size
= relsize
;
7327 elfsec_data
->rel_hdr
.sh_entsize
= 24;
7328 stub_entry
->stub_sec
->reloc_count
= 0;
7330 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
7331 stub_entry
->stub_sec
->reloc_count
+= 1;
7332 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
7333 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
7335 if (stub_entry
->h
!= NULL
)
7337 struct elf_link_hash_entry
**hashes
;
7338 unsigned long symndx
;
7339 struct ppc_link_hash_entry
*h
;
7341 hashes
= elf_sym_hashes (htab
->stub_bfd
);
7344 bfd_size_type hsize
;
7346 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
7347 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
7350 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
7351 htab
->stub_globals
= 1;
7353 symndx
= htab
->stub_globals
++;
7355 hashes
[symndx
] = &h
->elf
;
7356 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
7357 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
7359 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
7360 /* H is an opd symbol. The addend must be zero. */
7364 off
= (h
->elf
.root
.u
.def
.value
7365 + h
->elf
.root
.u
.def
.section
->output_offset
7366 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
7373 case ppc_stub_plt_branch
:
7374 case ppc_stub_plt_branch_r2off
:
7375 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7376 stub_entry
->root
.string
+ 9,
7378 if (br_entry
== NULL
)
7380 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
7381 stub_entry
->root
.string
+ 9);
7382 htab
->stub_error
= TRUE
;
7386 off
= (stub_entry
->target_value
7387 + stub_entry
->target_section
->output_offset
7388 + stub_entry
->target_section
->output_section
->vma
);
7390 bfd_put_64 (htab
->brlt
->owner
, off
,
7391 htab
->brlt
->contents
+ br_entry
->offset
);
7393 if (htab
->relbrlt
!= NULL
)
7395 /* Create a reloc for the branch lookup table entry. */
7396 Elf_Internal_Rela rela
;
7399 rela
.r_offset
= (br_entry
->offset
7400 + htab
->brlt
->output_offset
7401 + htab
->brlt
->output_section
->vma
);
7402 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
7403 rela
.r_addend
= off
;
7405 rl
= htab
->relbrlt
->contents
;
7406 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
7407 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
7410 off
= (br_entry
->offset
7411 + htab
->brlt
->output_offset
7412 + htab
->brlt
->output_section
->vma
7413 - elf_gp (htab
->brlt
->output_section
->owner
)
7414 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7416 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7418 (*_bfd_error_handler
)
7419 (_("linkage table error against `%s'"),
7420 stub_entry
->root
.string
);
7421 bfd_set_error (bfd_error_bad_value
);
7422 htab
->stub_error
= TRUE
;
7427 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
7429 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7431 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7438 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7439 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7440 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7442 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7444 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7446 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7448 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7452 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
7454 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
7457 case ppc_stub_plt_call
:
7458 /* Do the best we can for shared libraries built without
7459 exporting ".foo" for each "foo". This can happen when symbol
7460 versioning scripts strip all bar a subset of symbols. */
7461 if (stub_entry
->h
->oh
!= NULL
7462 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
7463 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7465 /* Point the symbol at the stub. There may be multiple stubs,
7466 we don't really care; The main thing is to make this sym
7467 defined somewhere. Maybe defining the symbol in the stub
7468 section is a silly idea. If we didn't do this, htab->top_id
7470 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
7471 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
7472 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
7475 /* Now build the stub. */
7477 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7478 if (ent
->addend
== stub_entry
->addend
)
7480 off
= ent
->plt
.offset
;
7483 if (off
>= (bfd_vma
) -2)
7486 off
&= ~ (bfd_vma
) 1;
7487 off
+= (htab
->plt
->output_offset
7488 + htab
->plt
->output_section
->vma
7489 - elf_gp (htab
->plt
->output_section
->owner
)
7490 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7492 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7494 (*_bfd_error_handler
)
7495 (_("linkage table error against `%s'"),
7496 stub_entry
->h
->elf
.root
.root
.string
);
7497 bfd_set_error (bfd_error_bad_value
);
7498 htab
->stub_error
= TRUE
;
7502 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
7511 stub_entry
->stub_sec
->size
+= size
;
7513 if (htab
->emit_stub_syms
)
7515 struct elf_link_hash_entry
*h
;
7518 const char *const stub_str
[] = { "long_branch",
7519 "long_branch_r2off",
7524 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
7525 len2
= strlen (stub_entry
->root
.string
);
7526 name
= bfd_malloc (len1
+ len2
+ 2);
7529 memcpy (name
, stub_entry
->root
.string
, 9);
7530 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
7531 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
7532 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
7535 if (h
->root
.type
== bfd_link_hash_new
)
7537 h
->root
.type
= bfd_link_hash_defined
;
7538 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
7539 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
7540 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
7541 | ELF_LINK_HASH_DEF_REGULAR
7542 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7543 | ELF_LINK_FORCED_LOCAL
);
7550 /* As above, but don't actually build the stub. Just bump offset so
7551 we know stub section sizes, and select plt_branch stubs where
7552 long_branch stubs won't do. */
7555 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7557 struct ppc_stub_hash_entry
*stub_entry
;
7558 struct bfd_link_info
*info
;
7559 struct ppc_link_hash_table
*htab
;
7563 /* Massage our args to the form they really have. */
7564 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7567 htab
= ppc_hash_table (info
);
7569 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7571 struct plt_entry
*ent
;
7573 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7574 if (ent
->addend
== stub_entry
->addend
)
7576 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
7579 if (off
>= (bfd_vma
) -2)
7581 off
+= (htab
->plt
->output_offset
7582 + htab
->plt
->output_section
->vma
7583 - elf_gp (htab
->plt
->output_section
->owner
)
7584 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7586 size
= PLT_CALL_STUB_SIZE
;
7587 if (PPC_HA (off
+ 16) != PPC_HA (off
))
7592 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
7594 off
= (stub_entry
->target_value
7595 + stub_entry
->target_section
->output_offset
7596 + stub_entry
->target_section
->output_section
->vma
);
7597 off
-= (stub_entry
->stub_sec
->size
7598 + stub_entry
->stub_sec
->output_offset
7599 + stub_entry
->stub_sec
->output_section
->vma
);
7601 /* Reset the stub type from the plt variant in case we now
7602 can reach with a shorter stub. */
7603 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
7604 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
7607 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
7613 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
7614 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
7616 struct ppc_branch_hash_entry
*br_entry
;
7618 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7619 stub_entry
->root
.string
+ 9,
7621 if (br_entry
== NULL
)
7623 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
7624 stub_entry
->root
.string
+ 9);
7625 htab
->stub_error
= TRUE
;
7629 if (br_entry
->iter
!= htab
->stub_iteration
)
7631 br_entry
->iter
= htab
->stub_iteration
;
7632 br_entry
->offset
= htab
->brlt
->size
;
7633 htab
->brlt
->size
+= 8;
7635 if (htab
->relbrlt
!= NULL
)
7636 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
7639 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
7641 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
7645 if (info
->emitrelocations
7646 && (stub_entry
->stub_type
== ppc_stub_long_branch
7647 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
7648 stub_entry
->stub_sec
->reloc_count
+= 1;
7651 stub_entry
->stub_sec
->size
+= size
;
7655 /* Set up various things so that we can make a list of input sections
7656 for each output section included in the link. Returns -1 on error,
7657 0 when no stubs will be needed, and 1 on success. */
7660 ppc64_elf_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
7663 int top_id
, top_index
, id
;
7665 asection
**input_list
;
7667 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7669 if (htab
->brlt
== NULL
)
7672 /* Find the top input section id. */
7673 for (input_bfd
= info
->input_bfds
, top_id
= 3;
7675 input_bfd
= input_bfd
->link_next
)
7677 for (section
= input_bfd
->sections
;
7679 section
= section
->next
)
7681 if (top_id
< section
->id
)
7682 top_id
= section
->id
;
7686 htab
->top_id
= top_id
;
7687 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
7688 htab
->stub_group
= bfd_zmalloc (amt
);
7689 if (htab
->stub_group
== NULL
)
7692 /* Set toc_off for com, und, abs and ind sections. */
7693 for (id
= 0; id
< 3; id
++)
7694 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
7696 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
7698 /* We can't use output_bfd->section_count here to find the top output
7699 section index as some sections may have been removed, and
7700 _bfd_strip_section_from_output doesn't renumber the indices. */
7701 for (section
= output_bfd
->sections
, top_index
= 0;
7703 section
= section
->next
)
7705 if (top_index
< section
->index
)
7706 top_index
= section
->index
;
7709 htab
->top_index
= top_index
;
7710 amt
= sizeof (asection
*) * (top_index
+ 1);
7711 input_list
= bfd_zmalloc (amt
);
7712 htab
->input_list
= input_list
;
7713 if (input_list
== NULL
)
7719 /* The linker repeatedly calls this function for each TOC input section
7720 and linker generated GOT section. Group input bfds such that the toc
7721 within a group is less than 64k in size. Will break with cute linker
7722 scripts that play games with dot in the output toc section. */
7725 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
7727 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7728 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
7729 bfd_vma off
= addr
- htab
->toc_curr
;
7731 if (off
+ isec
->size
> 0x10000)
7732 htab
->toc_curr
= addr
;
7734 elf_gp (isec
->owner
) = (htab
->toc_curr
7735 - elf_gp (isec
->output_section
->owner
)
7739 /* Called after the last call to the above function. */
7742 ppc64_elf_reinit_toc (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7743 struct bfd_link_info
*info
)
7745 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7747 /* toc_curr tracks the TOC offset used for code sections below in
7748 ppc64_elf_next_input_section. Start off at 0x8000. */
7749 htab
->toc_curr
= TOC_BASE_OFF
;
7752 /* No toc references were found in ISEC. If the code in ISEC makes no
7753 calls, then there's no need to use toc adjusting stubs when branching
7754 into ISEC. Actually, indirect calls from ISEC are OK as they will
7758 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
7765 /* We know none of our code bearing sections will need toc stubs. */
7766 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
7769 if (isec
->size
== 0)
7772 /* Hack for linux kernel. .fixup contains branches, but only back to
7773 the function that hit an exception. */
7774 branch_ok
= strcmp (isec
->name
, ".fixup") == 0;
7776 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7777 if (contents
== NULL
)
7779 if (!bfd_malloc_and_get_section (isec
->owner
, isec
, &contents
))
7781 if (contents
!= NULL
)
7785 if (info
->keep_memory
)
7786 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7789 /* Code scan, because we don't necessarily have relocs on calls to
7790 static functions. */
7792 for (i
= 0; i
< isec
->size
; i
+= 4)
7794 unsigned long insn
= bfd_get_32 (isec
->owner
, contents
+ i
);
7795 /* Is this a branch? */
7796 if ((insn
& (0x3f << 26)) == (18 << 26)
7797 /* If branch and link, it's a function call. */
7799 /* Sibling calls use a plain branch. I don't know a way
7800 of deciding whether a branch is really a sibling call. */
7808 if (elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7813 /* The linker repeatedly calls this function for each input section,
7814 in the order that input sections are linked into output sections.
7815 Build lists of input sections to determine groupings between which
7816 we may insert linker stubs. */
7819 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
7821 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7824 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
7825 && isec
->output_section
->index
<= htab
->top_index
)
7827 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
7828 /* Steal the link_sec pointer for our list. */
7829 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7830 /* This happens to make the list in reverse order,
7831 which is what we want. */
7832 PREV_SEC (isec
) = *list
;
7836 /* If a code section has a function that uses the TOC then we need
7837 to use the right TOC (obviously). Also, make sure that .opd gets
7838 the correct TOC value for R_PPC64_TOC relocs that don't have or
7839 can't find their function symbol (shouldn't ever happen now). */
7840 if (isec
->has_gp_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
7842 if (elf_gp (isec
->owner
) != 0)
7843 htab
->toc_curr
= elf_gp (isec
->owner
);
7845 else if ((ret
= toc_adjusting_stub_needed (info
, isec
)) < 0)
7848 isec
->has_gp_reloc
= ret
;
7850 /* Functions that don't use the TOC can belong in any TOC group.
7851 Use the last TOC base. This happens to make _init and _fini
7853 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
7857 /* See whether we can group stub sections together. Grouping stub
7858 sections may result in fewer stubs. More importantly, we need to
7859 put all .init* and .fini* stubs at the beginning of the .init or
7860 .fini output sections respectively, because glibc splits the
7861 _init and _fini functions into multiple parts. Putting a stub in
7862 the middle of a function is not a good idea. */
7865 group_sections (struct ppc_link_hash_table
*htab
,
7866 bfd_size_type stub_group_size
,
7867 bfd_boolean stubs_always_before_branch
)
7869 asection
**list
= htab
->input_list
+ htab
->top_index
;
7872 asection
*tail
= *list
;
7873 while (tail
!= NULL
)
7877 bfd_size_type total
;
7878 bfd_boolean big_sec
;
7883 big_sec
= total
>= stub_group_size
;
7884 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
7886 while ((prev
= PREV_SEC (curr
)) != NULL
7887 && ((total
+= curr
->output_offset
- prev
->output_offset
)
7889 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7892 /* OK, the size from the start of CURR to the end is less
7893 than stub_group_size and thus can be handled by one stub
7894 section. (or the tail section is itself larger than
7895 stub_group_size, in which case we may be toast.) We
7896 should really be keeping track of the total size of stubs
7897 added here, as stubs contribute to the final output
7898 section size. That's a little tricky, and this way will
7899 only break if stubs added make the total size more than
7900 2^25, ie. for the default stub_group_size, if stubs total
7901 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7904 prev
= PREV_SEC (tail
);
7905 /* Set up this stub group. */
7906 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7908 while (tail
!= curr
&& (tail
= prev
) != NULL
);
7910 /* But wait, there's more! Input sections up to stub_group_size
7911 bytes before the stub section can be handled by it too.
7912 Don't do this if we have a really large section after the
7913 stubs, as adding more stubs increases the chance that
7914 branches may not reach into the stub section. */
7915 if (!stubs_always_before_branch
&& !big_sec
)
7919 && ((total
+= tail
->output_offset
- prev
->output_offset
)
7921 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7924 prev
= PREV_SEC (tail
);
7925 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7931 while (list
-- != htab
->input_list
);
7932 free (htab
->input_list
);
7936 /* Determine and set the size of the stub section for a final link.
7938 The basic idea here is to examine all the relocations looking for
7939 PC-relative calls to a target that is unreachable with a "bl"
7943 ppc64_elf_size_stubs (bfd
*output_bfd
,
7944 struct bfd_link_info
*info
,
7945 bfd_signed_vma group_size
,
7946 asection
*(*add_stub_section
) (const char *, asection
*),
7947 void (*layout_sections_again
) (void))
7949 bfd_size_type stub_group_size
;
7950 bfd_boolean stubs_always_before_branch
;
7951 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7953 /* Stash our params away. */
7954 htab
->add_stub_section
= add_stub_section
;
7955 htab
->layout_sections_again
= layout_sections_again
;
7956 stubs_always_before_branch
= group_size
< 0;
7958 stub_group_size
= -group_size
;
7960 stub_group_size
= group_size
;
7961 if (stub_group_size
== 1)
7963 /* Default values. */
7964 if (stubs_always_before_branch
)
7966 stub_group_size
= 0x1e00000;
7967 if (htab
->has_14bit_branch
)
7968 stub_group_size
= 0x7800;
7972 stub_group_size
= 0x1c00000;
7973 if (htab
->has_14bit_branch
)
7974 stub_group_size
= 0x7000;
7978 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
7983 unsigned int bfd_indx
;
7985 bfd_boolean stub_changed
;
7987 htab
->stub_iteration
+= 1;
7988 stub_changed
= FALSE
;
7990 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
7992 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
7994 Elf_Internal_Shdr
*symtab_hdr
;
7996 Elf_Internal_Sym
*local_syms
= NULL
;
7998 /* We'll need the symbol table in a second. */
7999 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8000 if (symtab_hdr
->sh_info
== 0)
8003 /* Walk over each section attached to the input bfd. */
8004 for (section
= input_bfd
->sections
;
8006 section
= section
->next
)
8008 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
8010 /* If there aren't any relocs, then there's nothing more
8012 if ((section
->flags
& SEC_RELOC
) == 0
8013 || section
->reloc_count
== 0)
8016 /* If this section is a link-once section that will be
8017 discarded, then don't create any stubs. */
8018 if (section
->output_section
== NULL
8019 || section
->output_section
->owner
!= output_bfd
)
8022 /* Get the relocs. */
8024 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
8026 if (internal_relocs
== NULL
)
8027 goto error_ret_free_local
;
8029 /* Now examine each relocation. */
8030 irela
= internal_relocs
;
8031 irelaend
= irela
+ section
->reloc_count
;
8032 for (; irela
< irelaend
; irela
++)
8034 enum elf_ppc64_reloc_type r_type
;
8035 unsigned int r_indx
;
8036 enum ppc_stub_type stub_type
;
8037 struct ppc_stub_hash_entry
*stub_entry
;
8038 asection
*sym_sec
, *code_sec
;
8040 bfd_vma destination
;
8041 bfd_boolean ok_dest
;
8042 struct ppc_link_hash_entry
*hash
;
8043 struct ppc_link_hash_entry
*fdh
;
8044 struct elf_link_hash_entry
*h
;
8045 Elf_Internal_Sym
*sym
;
8047 const asection
*id_sec
;
8050 r_type
= ELF64_R_TYPE (irela
->r_info
);
8051 r_indx
= ELF64_R_SYM (irela
->r_info
);
8053 if (r_type
>= R_PPC64_max
)
8055 bfd_set_error (bfd_error_bad_value
);
8056 goto error_ret_free_internal
;
8059 /* Only look for stubs on branch instructions. */
8060 if (r_type
!= R_PPC64_REL24
8061 && r_type
!= R_PPC64_REL14
8062 && r_type
!= R_PPC64_REL14_BRTAKEN
8063 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8066 /* Now determine the call target, its name, value,
8068 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8070 goto error_ret_free_internal
;
8071 hash
= (struct ppc_link_hash_entry
*) h
;
8077 sym_value
= sym
->st_value
;
8083 /* Recognise an old ABI func code entry sym, and
8084 use the func descriptor sym instead. */
8085 if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
8086 && hash
->elf
.root
.root
.string
[0] == '.'
8087 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
8089 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
8090 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8092 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8093 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8094 if (sym_sec
->output_section
!= NULL
)
8100 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8101 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8103 sym_value
= hash
->elf
.root
.u
.def
.value
;
8104 if (sym_sec
->output_section
!= NULL
)
8107 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8109 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8113 bfd_set_error (bfd_error_bad_value
);
8114 goto error_ret_free_internal
;
8121 sym_value
+= irela
->r_addend
;
8122 destination
= (sym_value
8123 + sym_sec
->output_offset
8124 + sym_sec
->output_section
->vma
);
8128 opd_adjust
= get_opd_info (sym_sec
);
8129 if (opd_adjust
!= NULL
)
8135 long adjust
= opd_adjust
[sym_value
/ 8];
8138 sym_value
+= adjust
;
8140 dest
= opd_entry_value (sym_sec
, sym_value
,
8141 &code_sec
, &sym_value
);
8142 if (dest
!= (bfd_vma
) -1)
8147 /* Fixup old ABI sym to point at code
8149 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
8150 hash
->elf
.root
.u
.def
.section
= code_sec
;
8151 hash
->elf
.root
.u
.def
.value
= sym_value
;
8156 /* Determine what (if any) linker stub is needed. */
8157 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
8160 if (stub_type
!= ppc_stub_plt_call
)
8162 /* Check whether we need a TOC adjusting stub.
8163 Since the linker pastes together pieces from
8164 different object files when creating the
8165 _init and _fini functions, it may be that a
8166 call to what looks like a local sym is in
8167 fact a call needing a TOC adjustment. */
8168 if (code_sec
!= NULL
8169 && code_sec
->output_section
!= NULL
8170 && (htab
->stub_group
[code_sec
->id
].toc_off
8171 != htab
->stub_group
[section
->id
].toc_off
)
8172 && code_sec
->has_gp_reloc
8173 && section
->has_gp_reloc
)
8174 stub_type
= ppc_stub_long_branch_r2off
;
8177 if (stub_type
== ppc_stub_none
)
8180 /* __tls_get_addr calls might be eliminated. */
8181 if (stub_type
!= ppc_stub_plt_call
8183 && (hash
== htab
->tls_get_addr
8184 || hash
== htab
->tls_get_addr_fd
)
8185 && section
->has_tls_reloc
8186 && irela
!= internal_relocs
)
8191 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
8192 irela
- 1, input_bfd
))
8193 goto error_ret_free_internal
;
8198 /* Support for grouping stub sections. */
8199 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
8201 /* Get the name of this stub. */
8202 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
8204 goto error_ret_free_internal
;
8206 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
8207 stub_name
, FALSE
, FALSE
);
8208 if (stub_entry
!= NULL
)
8210 /* The proper stub has already been created. */
8215 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
8216 if (stub_entry
== NULL
)
8219 error_ret_free_internal
:
8220 if (elf_section_data (section
)->relocs
== NULL
)
8221 free (internal_relocs
);
8222 error_ret_free_local
:
8223 if (local_syms
!= NULL
8224 && (symtab_hdr
->contents
8225 != (unsigned char *) local_syms
))
8230 stub_entry
->stub_type
= stub_type
;
8231 stub_entry
->target_value
= sym_value
;
8232 stub_entry
->target_section
= code_sec
;
8233 stub_entry
->h
= hash
;
8234 stub_entry
->addend
= irela
->r_addend
;
8236 if (stub_entry
->h
!= NULL
)
8237 htab
->stub_globals
+= 1;
8239 stub_changed
= TRUE
;
8242 /* We're done with the internal relocs, free them. */
8243 if (elf_section_data (section
)->relocs
!= internal_relocs
)
8244 free (internal_relocs
);
8247 if (local_syms
!= NULL
8248 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8250 if (!info
->keep_memory
)
8253 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8260 /* OK, we've added some stubs. Find out the new size of the
8262 for (stub_sec
= htab
->stub_bfd
->sections
;
8264 stub_sec
= stub_sec
->next
)
8265 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8268 stub_sec
->reloc_count
= 0;
8271 htab
->brlt
->size
= 0;
8272 if (htab
->relbrlt
!= NULL
)
8273 htab
->relbrlt
->size
= 0;
8275 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
8277 /* Ask the linker to do its stuff. */
8278 (*htab
->layout_sections_again
) ();
8281 /* It would be nice to strip .branch_lt from the output if the
8282 section is empty, but it's too late. If we strip sections here,
8283 the dynamic symbol table is corrupted since the section symbol
8284 for the stripped section isn't written. */
8289 /* Called after we have determined section placement. If sections
8290 move, we'll be called again. Provide a value for TOCstart. */
8293 ppc64_elf_toc (bfd
*obfd
)
8298 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8299 order. The TOC starts where the first of these sections starts. */
8300 s
= bfd_get_section_by_name (obfd
, ".got");
8302 s
= bfd_get_section_by_name (obfd
, ".toc");
8304 s
= bfd_get_section_by_name (obfd
, ".tocbss");
8306 s
= bfd_get_section_by_name (obfd
, ".plt");
8309 /* This may happen for
8310 o references to TOC base (SYM@toc / TOC[tc0]) without a
8313 o --gc-sections and empty TOC sections
8315 FIXME: Warn user? */
8317 /* Look for a likely section. We probably won't even be
8319 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8320 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
8321 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8324 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8325 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
8326 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8329 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8330 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
8333 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8334 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
8340 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
8345 /* Build all the stubs associated with the current output file.
8346 The stubs are kept in a hash table attached to the main linker
8347 hash table. This function is called via gldelf64ppc_finish. */
8350 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
8351 struct bfd_link_info
*info
,
8354 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8357 int stub_sec_count
= 0;
8359 htab
->emit_stub_syms
= emit_stub_syms
;
8361 /* Allocate memory to hold the linker stubs. */
8362 for (stub_sec
= htab
->stub_bfd
->sections
;
8364 stub_sec
= stub_sec
->next
)
8365 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
8366 && stub_sec
->size
!= 0)
8368 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
8369 if (stub_sec
->contents
== NULL
)
8371 /* We want to check that built size is the same as calculated
8372 size. rawsize is a convenient location to use. */
8373 stub_sec
->rawsize
= stub_sec
->size
;
8377 if (htab
->plt
!= NULL
)
8382 /* Build the .glink plt call stub. */
8383 plt0
= (htab
->plt
->output_section
->vma
8384 + htab
->plt
->output_offset
8385 - (htab
->glink
->output_section
->vma
8386 + htab
->glink
->output_offset
8387 + GLINK_CALL_STUB_SIZE
));
8388 if (plt0
+ 0x80008000 > 0xffffffff)
8390 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
8391 bfd_set_error (bfd_error_bad_value
);
8395 if (htab
->emit_stub_syms
)
8397 struct elf_link_hash_entry
*h
;
8398 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
8401 if (h
->root
.type
== bfd_link_hash_new
)
8403 h
->root
.type
= bfd_link_hash_defined
;
8404 h
->root
.u
.def
.section
= htab
->glink
;
8405 h
->root
.u
.def
.value
= 0;
8406 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
8407 | ELF_LINK_HASH_DEF_REGULAR
8408 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
8409 | ELF_LINK_FORCED_LOCAL
);
8412 p
= htab
->glink
->contents
;
8413 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
8415 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
8417 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
8419 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
8421 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
8423 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
8425 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
8427 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
8429 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
8431 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
8433 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
8435 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
8437 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
8439 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
8441 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
8443 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
8446 /* Build the .glink lazy link call stubs. */
8448 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
8452 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
8457 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
8459 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
8462 bfd_put_32 (htab
->glink
->owner
,
8463 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
8467 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
8470 if (htab
->brlt
->size
!= 0)
8472 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
8474 if (htab
->brlt
->contents
== NULL
)
8477 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
8479 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
8480 htab
->relbrlt
->size
);
8481 if (htab
->relbrlt
->contents
== NULL
)
8485 /* Build the stubs as directed by the stub hash table. */
8486 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
8488 for (stub_sec
= htab
->stub_bfd
->sections
;
8490 stub_sec
= stub_sec
->next
)
8491 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8493 stub_sec_count
+= 1;
8494 if (stub_sec
->rawsize
!= stub_sec
->size
)
8498 if (stub_sec
!= NULL
8499 || htab
->glink
->rawsize
!= htab
->glink
->size
)
8501 htab
->stub_error
= TRUE
;
8502 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
8505 if (htab
->stub_error
)
8510 *stats
= bfd_malloc (500);
8514 sprintf (*stats
, _("linker stubs in %u group%s\n"
8517 " long branch %lu\n"
8518 " long toc adj %lu\n"
8521 stub_sec_count
== 1 ? "" : "s",
8522 htab
->stub_count
[ppc_stub_long_branch
- 1],
8523 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
8524 htab
->stub_count
[ppc_stub_plt_branch
- 1],
8525 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
8526 htab
->stub_count
[ppc_stub_plt_call
- 1]);
8531 /* This function undoes the changes made by add_symbol_adjust. */
8534 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
8536 struct ppc_link_hash_entry
*eh
;
8538 if (h
->root
.type
== bfd_link_hash_indirect
)
8541 if (h
->root
.type
== bfd_link_hash_warning
)
8542 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8544 eh
= (struct ppc_link_hash_entry
*) h
;
8545 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
8548 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
8553 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
8555 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8556 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
8559 /* The RELOCATE_SECTION function is called by the ELF backend linker
8560 to handle the relocations for a section.
8562 The relocs are always passed as Rela structures; if the section
8563 actually uses Rel structures, the r_addend field will always be
8566 This function is responsible for adjust the section contents as
8567 necessary, and (if using Rela relocs and generating a
8568 relocatable output file) adjusting the reloc addend as
8571 This function does not have to worry about setting the reloc
8572 address or the reloc symbol index.
8574 LOCAL_SYMS is a pointer to the swapped in local symbols.
8576 LOCAL_SECTIONS is an array giving the section in the input file
8577 corresponding to the st_shndx field of each local symbol.
8579 The global hash table entry for the global symbols can be found
8580 via elf_sym_hashes (input_bfd).
8582 When generating relocatable output, this function must handle
8583 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
8584 going to be the section symbol corresponding to the output
8585 section, which means that the addend must be adjusted
8589 ppc64_elf_relocate_section (bfd
*output_bfd
,
8590 struct bfd_link_info
*info
,
8592 asection
*input_section
,
8594 Elf_Internal_Rela
*relocs
,
8595 Elf_Internal_Sym
*local_syms
,
8596 asection
**local_sections
)
8598 struct ppc_link_hash_table
*htab
;
8599 Elf_Internal_Shdr
*symtab_hdr
;
8600 struct elf_link_hash_entry
**sym_hashes
;
8601 Elf_Internal_Rela
*rel
;
8602 Elf_Internal_Rela
*relend
;
8603 Elf_Internal_Rela outrel
;
8605 struct got_entry
**local_got_ents
;
8607 bfd_boolean ret
= TRUE
;
8609 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
8610 bfd_boolean is_power4
= FALSE
;
8612 if (info
->relocatable
)
8615 /* Initialize howto table if needed. */
8616 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
8619 htab
= ppc_hash_table (info
);
8621 /* Don't relocate stub sections. */
8622 if (input_section
->owner
== htab
->stub_bfd
)
8625 local_got_ents
= elf_local_got_ents (input_bfd
);
8626 TOCstart
= elf_gp (output_bfd
);
8627 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8628 sym_hashes
= elf_sym_hashes (input_bfd
);
8629 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
8632 relend
= relocs
+ input_section
->reloc_count
;
8633 for (; rel
< relend
; rel
++)
8635 enum elf_ppc64_reloc_type r_type
;
8637 bfd_reloc_status_type r
;
8638 Elf_Internal_Sym
*sym
;
8640 struct elf_link_hash_entry
*h_elf
;
8641 struct ppc_link_hash_entry
*h
;
8642 struct ppc_link_hash_entry
*fdh
;
8643 const char *sym_name
;
8644 unsigned long r_symndx
, toc_symndx
;
8645 char tls_mask
, tls_gd
, tls_type
;
8648 bfd_boolean unresolved_reloc
;
8650 unsigned long insn
, mask
;
8651 struct ppc_stub_hash_entry
*stub_entry
;
8652 bfd_vma max_br_offset
;
8655 r_type
= ELF64_R_TYPE (rel
->r_info
);
8656 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8658 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
8659 symbol of the previous ADDR64 reloc. The symbol gives us the
8660 proper TOC base to use. */
8661 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
8663 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
8665 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
8671 unresolved_reloc
= FALSE
;
8674 if (r_symndx
< symtab_hdr
->sh_info
)
8676 /* It's a local symbol. */
8679 sym
= local_syms
+ r_symndx
;
8680 sec
= local_sections
[r_symndx
];
8681 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
8682 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
8683 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
8684 opd_adjust
= get_opd_info (sec
);
8685 if (opd_adjust
!= NULL
)
8687 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
8691 relocation
+= adjust
;
8696 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
8697 r_symndx
, symtab_hdr
, sym_hashes
,
8698 h_elf
, sec
, relocation
,
8699 unresolved_reloc
, warned
);
8700 sym_name
= h_elf
->root
.root
.string
;
8701 sym_type
= h_elf
->type
;
8703 h
= (struct ppc_link_hash_entry
*) h_elf
;
8705 /* TLS optimizations. Replace instruction sequences and relocs
8706 based on information we collected in tls_optimize. We edit
8707 RELOCS so that --emit-relocs will output something sensible
8708 for the final instruction stream. */
8712 if (IS_PPC64_TLS_RELOC (r_type
))
8715 tls_mask
= h
->tls_mask
;
8716 else if (local_got_ents
!= NULL
)
8719 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
8720 tls_mask
= lgot_masks
[r_symndx
];
8722 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
8724 /* Check for toc tls entries. */
8727 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
8732 tls_mask
= *toc_tls
;
8736 /* Check that tls relocs are used with tls syms, and non-tls
8737 relocs are used with non-tls syms. */
8739 && r_type
!= R_PPC64_NONE
8741 || h
->elf
.root
.type
== bfd_link_hash_defined
8742 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8743 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
8745 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
8746 /* R_PPC64_TLS is OK against a symbol in the TOC. */
8749 (*_bfd_error_handler
)
8750 (sym_type
== STT_TLS
8751 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8752 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
8755 (long) rel
->r_offset
,
8756 ppc64_elf_howto_table
[r_type
]->name
,
8760 /* Ensure reloc mapping code below stays sane. */
8761 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
8762 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
8763 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
8764 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
8765 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
8766 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
8767 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
8768 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
8769 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
8770 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
8779 case R_PPC64_TOC16_LO
:
8780 case R_PPC64_TOC16_DS
:
8781 case R_PPC64_TOC16_LO_DS
:
8783 /* Check for toc tls entries. */
8787 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
8794 tls_mask
= *toc_tls
;
8795 if (r_type
== R_PPC64_TOC16_DS
8796 || r_type
== R_PPC64_TOC16_LO_DS
)
8799 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
8804 /* If we found a GD reloc pair, then we might be
8805 doing a GD->IE transition. */
8808 tls_gd
= TLS_TPRELGD
;
8809 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8810 goto tls_get_addr_check
;
8812 else if (retval
== 3)
8814 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8815 goto tls_get_addr_check
;
8822 case R_PPC64_GOT_TPREL16_DS
:
8823 case R_PPC64_GOT_TPREL16_LO_DS
:
8825 && (tls_mask
& TLS_TPREL
) == 0)
8828 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
8830 insn
|= 0x3c0d0000; /* addis 0,13,0 */
8831 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
8832 r_type
= R_PPC64_TPREL16_HA
;
8833 if (toc_symndx
!= 0)
8835 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8836 /* We changed the symbol. Start over in order to
8837 get h, sym, sec etc. right. */
8842 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8848 && (tls_mask
& TLS_TPREL
) == 0)
8851 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8852 if ((insn
& ((0x3f << 26) | (31 << 11)))
8853 == ((31 << 26) | (13 << 11)))
8854 rtra
= insn
& ((1 << 26) - (1 << 16));
8855 else if ((insn
& ((0x3f << 26) | (31 << 16)))
8856 == ((31 << 26) | (13 << 16)))
8857 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
8860 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
8863 else if ((insn
& (31 << 1)) == 23 << 1
8864 && ((insn
& (31 << 6)) < 14 << 6
8865 || ((insn
& (31 << 6)) >= 16 << 6
8866 && (insn
& (31 << 6)) < 24 << 6)))
8867 /* load and store indexed -> dform. */
8868 insn
= (32 | ((insn
>> 6) & 31)) << 26;
8869 else if ((insn
& (31 << 1)) == 21 << 1
8870 && (insn
& (0x1a << 6)) == 0)
8871 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8872 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
8873 | ((insn
>> 6) & 1));
8874 else if ((insn
& (31 << 1)) == 21 << 1
8875 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
8877 insn
= (58 << 26) | 2;
8881 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8882 /* Was PPC64_TLS which sits on insn boundary, now
8883 PPC64_TPREL16_LO which is at insn+2. */
8885 r_type
= R_PPC64_TPREL16_LO
;
8886 if (toc_symndx
!= 0)
8888 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8889 /* We changed the symbol. Start over in order to
8890 get h, sym, sec etc. right. */
8895 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8899 case R_PPC64_GOT_TLSGD16_HI
:
8900 case R_PPC64_GOT_TLSGD16_HA
:
8901 tls_gd
= TLS_TPRELGD
;
8902 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8906 case R_PPC64_GOT_TLSLD16_HI
:
8907 case R_PPC64_GOT_TLSLD16_HA
:
8908 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8911 if ((tls_mask
& tls_gd
) != 0)
8912 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8913 + R_PPC64_GOT_TPREL16_DS
);
8916 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
8918 r_type
= R_PPC64_NONE
;
8920 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8924 case R_PPC64_GOT_TLSGD16
:
8925 case R_PPC64_GOT_TLSGD16_LO
:
8926 tls_gd
= TLS_TPRELGD
;
8927 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8928 goto tls_get_addr_check
;
8931 case R_PPC64_GOT_TLSLD16
:
8932 case R_PPC64_GOT_TLSLD16_LO
:
8933 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8936 if (rel
+ 1 < relend
)
8938 enum elf_ppc64_reloc_type r_type2
;
8939 unsigned long r_symndx2
;
8940 struct elf_link_hash_entry
*h2
;
8941 bfd_vma insn1
, insn2
, insn3
;
8944 /* The next instruction should be a call to
8945 __tls_get_addr. Peek at the reloc to be sure. */
8946 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
8947 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
8948 if (r_symndx2
< symtab_hdr
->sh_info
8949 || (r_type2
!= R_PPC64_REL14
8950 && r_type2
!= R_PPC64_REL14_BRTAKEN
8951 && r_type2
!= R_PPC64_REL14_BRNTAKEN
8952 && r_type2
!= R_PPC64_REL24
))
8955 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
8956 while (h2
->root
.type
== bfd_link_hash_indirect
8957 || h2
->root
.type
== bfd_link_hash_warning
)
8958 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
8959 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
8960 && h2
!= &htab
->tls_get_addr_fd
->elf
))
8963 /* OK, it checks out. Replace the call. */
8964 offset
= rel
[1].r_offset
;
8965 insn1
= bfd_get_32 (output_bfd
,
8966 contents
+ rel
->r_offset
- 2);
8967 insn3
= bfd_get_32 (output_bfd
,
8968 contents
+ offset
+ 4);
8969 if ((tls_mask
& tls_gd
) != 0)
8972 insn1
&= (1 << 26) - (1 << 2);
8973 insn1
|= 58 << 26; /* ld */
8974 insn2
= 0x7c636a14; /* add 3,3,13 */
8975 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
8976 if ((tls_mask
& TLS_EXPLICIT
) == 0)
8977 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8978 + R_PPC64_GOT_TPREL16_DS
);
8980 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
8981 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8986 insn1
= 0x3c6d0000; /* addis 3,13,0 */
8987 insn2
= 0x38630000; /* addi 3,3,0 */
8990 /* Was an LD reloc. */
8992 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8993 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8995 else if (toc_symndx
!= 0)
8996 r_symndx
= toc_symndx
;
8997 r_type
= R_PPC64_TPREL16_HA
;
8998 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8999 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
9000 R_PPC64_TPREL16_LO
);
9001 rel
[1].r_offset
+= 2;
9004 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
9008 rel
[1].r_offset
+= 4;
9010 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
9011 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
9012 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
9013 if (tls_gd
== 0 || toc_symndx
!= 0)
9015 /* We changed the symbol. Start over in order
9016 to get h, sym, sec etc. right. */
9024 case R_PPC64_DTPMOD64
:
9025 if (rel
+ 1 < relend
9026 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
9027 && rel
[1].r_offset
== rel
->r_offset
+ 8)
9029 if ((tls_mask
& TLS_GD
) == 0)
9031 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
9032 if ((tls_mask
& TLS_TPRELGD
) != 0)
9033 r_type
= R_PPC64_TPREL64
;
9036 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9037 r_type
= R_PPC64_NONE
;
9039 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9044 if ((tls_mask
& TLS_LD
) == 0)
9046 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9047 r_type
= R_PPC64_NONE
;
9048 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9053 case R_PPC64_TPREL64
:
9054 if ((tls_mask
& TLS_TPREL
) == 0)
9056 r_type
= R_PPC64_NONE
;
9057 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9062 /* Handle other relocations that tweak non-addend part of insn. */
9064 max_br_offset
= 1 << 25;
9065 addend
= rel
->r_addend
;
9071 /* Branch taken prediction relocations. */
9072 case R_PPC64_ADDR14_BRTAKEN
:
9073 case R_PPC64_REL14_BRTAKEN
:
9074 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9077 /* Branch not taken prediction relocations. */
9078 case R_PPC64_ADDR14_BRNTAKEN
:
9079 case R_PPC64_REL14_BRNTAKEN
:
9080 insn
|= bfd_get_32 (output_bfd
,
9081 contents
+ rel
->r_offset
) & ~(0x01 << 21);
9085 max_br_offset
= 1 << 15;
9089 /* Calls to functions with a different TOC, such as calls to
9090 shared objects, need to alter the TOC pointer. This is
9091 done using a linkage stub. A REL24 branching to these
9092 linkage stubs needs to be followed by a nop, as the nop
9093 will be replaced with an instruction to restore the TOC
9098 && (((fdh
= h
->oh
) != NULL
9099 && fdh
->elf
.plt
.plist
!= NULL
)
9100 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
9102 && sec
->output_section
!= NULL
9103 && sec
->id
<= htab
->top_id
9104 && (htab
->stub_group
[sec
->id
].toc_off
9105 != htab
->stub_group
[input_section
->id
].toc_off
)))
9106 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9108 && (stub_entry
->stub_type
== ppc_stub_plt_call
9109 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9110 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9112 bfd_boolean can_plt_call
= FALSE
;
9114 if (rel
->r_offset
+ 8 <= input_section
->size
)
9117 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
9119 || nop
== CROR_151515
|| nop
== CROR_313131
)
9121 bfd_put_32 (input_bfd
, LD_R2_40R1
,
9122 contents
+ rel
->r_offset
+ 4);
9123 can_plt_call
= TRUE
;
9129 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9131 /* If this is a plain branch rather than a branch
9132 and link, don't require a nop. */
9134 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9136 can_plt_call
= TRUE
;
9139 && strcmp (h
->elf
.root
.root
.string
,
9140 ".__libc_start_main") == 0)
9142 /* Allow crt1 branch to go via a toc adjusting stub. */
9143 can_plt_call
= TRUE
;
9147 if (strcmp (input_section
->output_section
->name
,
9149 || strcmp (input_section
->output_section
->name
,
9151 (*_bfd_error_handler
)
9152 (_("%B(%A+0x%lx): automatic multiple TOCs "
9153 "not supported using your crt files; "
9154 "recompile with -mminimal-toc or upgrade gcc"),
9157 (long) rel
->r_offset
);
9159 (*_bfd_error_handler
)
9160 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9161 "does not allow automatic multiple TOCs; "
9162 "recompile with -mminimal-toc or "
9163 "-fno-optimize-sibling-calls, "
9164 "or make `%s' extern"),
9167 (long) rel
->r_offset
,
9170 bfd_set_error (bfd_error_bad_value
);
9176 && stub_entry
->stub_type
== ppc_stub_plt_call
)
9177 unresolved_reloc
= FALSE
;
9180 if (stub_entry
== NULL
9181 && get_opd_info (sec
) != NULL
)
9183 /* The branch destination is the value of the opd entry. */
9184 bfd_vma off
= (relocation
- sec
->output_section
->vma
9185 - sec
->output_offset
+ rel
->r_addend
);
9186 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
9187 if (dest
!= (bfd_vma
) -1)
9194 /* If the branch is out of reach we ought to have a long
9196 from
= (rel
->r_offset
9197 + input_section
->output_offset
9198 + input_section
->output_section
->vma
);
9200 if (stub_entry
== NULL
9201 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
9202 >= 2 * max_br_offset
)
9203 && r_type
!= R_PPC64_ADDR14_BRTAKEN
9204 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
9205 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
9208 if (stub_entry
!= NULL
)
9210 /* Munge up the value and addend so that we call the stub
9211 rather than the procedure directly. */
9212 relocation
= (stub_entry
->stub_offset
9213 + stub_entry
->stub_sec
->output_offset
9214 + stub_entry
->stub_sec
->output_section
->vma
);
9222 /* Set 'a' bit. This is 0b00010 in BO field for branch
9223 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9224 for branch on CTR insns (BO == 1a00t or 1a01t). */
9225 if ((insn
& (0x14 << 21)) == (0x04 << 21))
9227 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
9234 /* Invert 'y' bit if not the default. */
9235 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
9239 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9242 /* NOP out calls to undefined weak functions.
9243 We can thus call a weak function without first
9244 checking whether the function is defined. */
9246 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9247 && r_type
== R_PPC64_REL24
9249 && rel
->r_addend
== 0)
9251 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9262 (*_bfd_error_handler
)
9263 (_("%B: unknown relocation type %d for symbol %s"),
9264 input_bfd
, (int) r_type
, sym_name
);
9266 bfd_set_error (bfd_error_bad_value
);
9272 case R_PPC64_GNU_VTINHERIT
:
9273 case R_PPC64_GNU_VTENTRY
:
9276 /* GOT16 relocations. Like an ADDR16 using the symbol's
9277 address in the GOT as relocation value instead of the
9278 symbol's value itself. Also, create a GOT entry for the
9279 symbol and put the symbol value there. */
9280 case R_PPC64_GOT_TLSGD16
:
9281 case R_PPC64_GOT_TLSGD16_LO
:
9282 case R_PPC64_GOT_TLSGD16_HI
:
9283 case R_PPC64_GOT_TLSGD16_HA
:
9284 tls_type
= TLS_TLS
| TLS_GD
;
9287 case R_PPC64_GOT_TLSLD16
:
9288 case R_PPC64_GOT_TLSLD16_LO
:
9289 case R_PPC64_GOT_TLSLD16_HI
:
9290 case R_PPC64_GOT_TLSLD16_HA
:
9291 tls_type
= TLS_TLS
| TLS_LD
;
9294 case R_PPC64_GOT_TPREL16_DS
:
9295 case R_PPC64_GOT_TPREL16_LO_DS
:
9296 case R_PPC64_GOT_TPREL16_HI
:
9297 case R_PPC64_GOT_TPREL16_HA
:
9298 tls_type
= TLS_TLS
| TLS_TPREL
;
9301 case R_PPC64_GOT_DTPREL16_DS
:
9302 case R_PPC64_GOT_DTPREL16_LO_DS
:
9303 case R_PPC64_GOT_DTPREL16_HI
:
9304 case R_PPC64_GOT_DTPREL16_HA
:
9305 tls_type
= TLS_TLS
| TLS_DTPREL
;
9309 case R_PPC64_GOT16_LO
:
9310 case R_PPC64_GOT16_HI
:
9311 case R_PPC64_GOT16_HA
:
9312 case R_PPC64_GOT16_DS
:
9313 case R_PPC64_GOT16_LO_DS
:
9316 /* Relocation is to the entry for this symbol in the global
9321 unsigned long indx
= 0;
9323 if (tls_type
== (TLS_TLS
| TLS_LD
)
9325 || (h
->elf
.elf_link_hash_flags
9326 & ELF_LINK_HASH_DEF_DYNAMIC
) == 0))
9327 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
9330 struct got_entry
*ent
;
9334 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
9335 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
9338 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
9339 /* This is actually a static link, or it is a
9340 -Bsymbolic link and the symbol is defined
9341 locally, or the symbol was forced to be local
9342 because of a version file. */
9346 indx
= h
->elf
.dynindx
;
9347 unresolved_reloc
= FALSE
;
9349 ent
= h
->elf
.got
.glist
;
9353 if (local_got_ents
== NULL
)
9355 ent
= local_got_ents
[r_symndx
];
9358 for (; ent
!= NULL
; ent
= ent
->next
)
9359 if (ent
->addend
== rel
->r_addend
9360 && ent
->owner
== input_bfd
9361 && ent
->tls_type
== tls_type
)
9365 offp
= &ent
->got
.offset
;
9368 got
= ppc64_elf_tdata (input_bfd
)->got
;
9372 /* The offset must always be a multiple of 8. We use the
9373 least significant bit to record whether we have already
9374 processed this entry. */
9380 /* Generate relocs for the dynamic linker, except in
9381 the case of TLSLD where we'll use one entry per
9383 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
9386 if ((info
->shared
|| indx
!= 0)
9388 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
9389 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
9391 outrel
.r_offset
= (got
->output_section
->vma
9392 + got
->output_offset
9394 outrel
.r_addend
= rel
->r_addend
;
9395 if (tls_type
& (TLS_LD
| TLS_GD
))
9397 outrel
.r_addend
= 0;
9398 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
9399 if (tls_type
== (TLS_TLS
| TLS_GD
))
9401 loc
= relgot
->contents
;
9402 loc
+= (relgot
->reloc_count
++
9403 * sizeof (Elf64_External_Rela
));
9404 bfd_elf64_swap_reloca_out (output_bfd
,
9406 outrel
.r_offset
+= 8;
9407 outrel
.r_addend
= rel
->r_addend
;
9409 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
9412 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
9413 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
9414 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
9415 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
9418 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
9420 /* Write the .got section contents for the sake
9422 loc
= got
->contents
+ off
;
9423 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
9427 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
9429 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
9431 outrel
.r_addend
+= relocation
;
9432 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
9433 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
9435 loc
= relgot
->contents
;
9436 loc
+= (relgot
->reloc_count
++
9437 * sizeof (Elf64_External_Rela
));
9438 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
9441 /* Init the .got section contents here if we're not
9442 emitting a reloc. */
9445 relocation
+= rel
->r_addend
;
9446 if (tls_type
== (TLS_TLS
| TLS_LD
))
9448 else if (tls_type
!= 0)
9450 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9451 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
9452 relocation
+= DTP_OFFSET
- TP_OFFSET
;
9454 if (tls_type
== (TLS_TLS
| TLS_GD
))
9456 bfd_put_64 (output_bfd
, relocation
,
9457 got
->contents
+ off
+ 8);
9462 bfd_put_64 (output_bfd
, relocation
,
9463 got
->contents
+ off
);
9467 if (off
>= (bfd_vma
) -2)
9470 relocation
= got
->output_offset
+ off
;
9472 /* TOC base (r2) is TOC start plus 0x8000. */
9473 addend
= -TOC_BASE_OFF
;
9477 case R_PPC64_PLT16_HA
:
9478 case R_PPC64_PLT16_HI
:
9479 case R_PPC64_PLT16_LO
:
9482 /* Relocation is to the entry for this symbol in the
9483 procedure linkage table. */
9485 /* Resolve a PLT reloc against a local symbol directly,
9486 without using the procedure linkage table. */
9490 /* It's possible that we didn't make a PLT entry for this
9491 symbol. This happens when statically linking PIC code,
9492 or when using -Bsymbolic. Go find a match if there is a
9494 if (htab
->plt
!= NULL
)
9496 struct plt_entry
*ent
;
9497 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9498 if (ent
->addend
== rel
->r_addend
9499 && ent
->plt
.offset
!= (bfd_vma
) -1)
9501 relocation
= (htab
->plt
->output_section
->vma
9502 + htab
->plt
->output_offset
9504 unresolved_reloc
= FALSE
;
9510 /* Relocation value is TOC base. */
9511 relocation
= TOCstart
;
9513 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
9514 else if (unresolved_reloc
)
9516 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
9517 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
9519 unresolved_reloc
= TRUE
;
9522 /* TOC16 relocs. We want the offset relative to the TOC base,
9523 which is the address of the start of the TOC plus 0x8000.
9524 The TOC consists of sections .got, .toc, .tocbss, and .plt,
9527 case R_PPC64_TOC16_LO
:
9528 case R_PPC64_TOC16_HI
:
9529 case R_PPC64_TOC16_DS
:
9530 case R_PPC64_TOC16_LO_DS
:
9531 case R_PPC64_TOC16_HA
:
9532 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
9535 /* Relocate against the beginning of the section. */
9536 case R_PPC64_SECTOFF
:
9537 case R_PPC64_SECTOFF_LO
:
9538 case R_PPC64_SECTOFF_HI
:
9539 case R_PPC64_SECTOFF_DS
:
9540 case R_PPC64_SECTOFF_LO_DS
:
9541 case R_PPC64_SECTOFF_HA
:
9543 addend
-= sec
->output_section
->vma
;
9547 case R_PPC64_REL14_BRNTAKEN
:
9548 case R_PPC64_REL14_BRTAKEN
:
9552 case R_PPC64_TPREL16
:
9553 case R_PPC64_TPREL16_LO
:
9554 case R_PPC64_TPREL16_HI
:
9555 case R_PPC64_TPREL16_HA
:
9556 case R_PPC64_TPREL16_DS
:
9557 case R_PPC64_TPREL16_LO_DS
:
9558 case R_PPC64_TPREL16_HIGHER
:
9559 case R_PPC64_TPREL16_HIGHERA
:
9560 case R_PPC64_TPREL16_HIGHEST
:
9561 case R_PPC64_TPREL16_HIGHESTA
:
9562 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
9564 /* The TPREL16 relocs shouldn't really be used in shared
9565 libs as they will result in DT_TEXTREL being set, but
9566 support them anyway. */
9570 case R_PPC64_DTPREL16
:
9571 case R_PPC64_DTPREL16_LO
:
9572 case R_PPC64_DTPREL16_HI
:
9573 case R_PPC64_DTPREL16_HA
:
9574 case R_PPC64_DTPREL16_DS
:
9575 case R_PPC64_DTPREL16_LO_DS
:
9576 case R_PPC64_DTPREL16_HIGHER
:
9577 case R_PPC64_DTPREL16_HIGHERA
:
9578 case R_PPC64_DTPREL16_HIGHEST
:
9579 case R_PPC64_DTPREL16_HIGHESTA
:
9580 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9583 case R_PPC64_DTPMOD64
:
9588 case R_PPC64_TPREL64
:
9589 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
9592 case R_PPC64_DTPREL64
:
9593 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9596 /* Relocations that may need to be propagated if this is a
9601 case R_PPC64_ADDR14
:
9602 case R_PPC64_ADDR14_BRNTAKEN
:
9603 case R_PPC64_ADDR14_BRTAKEN
:
9604 case R_PPC64_ADDR16
:
9605 case R_PPC64_ADDR16_DS
:
9606 case R_PPC64_ADDR16_HA
:
9607 case R_PPC64_ADDR16_HI
:
9608 case R_PPC64_ADDR16_HIGHER
:
9609 case R_PPC64_ADDR16_HIGHERA
:
9610 case R_PPC64_ADDR16_HIGHEST
:
9611 case R_PPC64_ADDR16_HIGHESTA
:
9612 case R_PPC64_ADDR16_LO
:
9613 case R_PPC64_ADDR16_LO_DS
:
9614 case R_PPC64_ADDR24
:
9615 case R_PPC64_ADDR32
:
9616 case R_PPC64_ADDR64
:
9617 case R_PPC64_UADDR16
:
9618 case R_PPC64_UADDR32
:
9619 case R_PPC64_UADDR64
:
9620 /* r_symndx will be zero only for relocs against symbols
9621 from removed linkonce sections, or sections discarded by
9629 if ((input_section
->flags
& SEC_ALLOC
) == 0)
9632 if (NO_OPD_RELOCS
&& is_opd
)
9637 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
9638 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
9639 && (MUST_BE_DYN_RELOC (r_type
)
9640 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
9641 || (ELIMINATE_COPY_RELOCS
9644 && h
->elf
.dynindx
!= -1
9645 && !(h
->elf
.elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
)
9646 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)
9647 && !(h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
9649 Elf_Internal_Rela outrel
;
9650 bfd_boolean skip
, relocate
;
9655 /* When generating a dynamic object, these relocations
9656 are copied into the output file to be resolved at run
9662 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
9663 input_section
, rel
->r_offset
);
9664 if (out_off
== (bfd_vma
) -1)
9666 else if (out_off
== (bfd_vma
) -2)
9667 skip
= TRUE
, relocate
= TRUE
;
9668 out_off
+= (input_section
->output_section
->vma
9669 + input_section
->output_offset
);
9670 outrel
.r_offset
= out_off
;
9671 outrel
.r_addend
= rel
->r_addend
;
9673 /* Optimize unaligned reloc use. */
9674 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
9675 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
9676 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
9677 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
9678 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
9679 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
9680 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
9681 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
9682 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
9685 memset (&outrel
, 0, sizeof outrel
);
9686 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
9688 && r_type
!= R_PPC64_TOC
)
9689 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
9692 /* This symbol is local, or marked to become local,
9693 or this is an opd section reloc which must point
9694 at a local function. */
9695 outrel
.r_addend
+= relocation
;
9696 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
9698 if (is_opd
&& h
!= NULL
)
9700 /* Lie about opd entries. This case occurs
9701 when building shared libraries and we
9702 reference a function in another shared
9703 lib. The same thing happens for a weak
9704 definition in an application that's
9705 overridden by a strong definition in a
9706 shared lib. (I believe this is a generic
9707 bug in binutils handling of weak syms.)
9708 In these cases we won't use the opd
9709 entry in this lib. */
9710 unresolved_reloc
= FALSE
;
9712 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9714 /* We need to relocate .opd contents for ld.so.
9715 Prelink also wants simple and consistent rules
9716 for relocs. This make all RELATIVE relocs have
9717 *r_offset equal to r_addend. */
9724 if (bfd_is_abs_section (sec
))
9726 else if (sec
== NULL
|| sec
->owner
== NULL
)
9728 bfd_set_error (bfd_error_bad_value
);
9735 osec
= sec
->output_section
;
9736 indx
= elf_section_data (osec
)->dynindx
;
9738 /* We are turning this relocation into one
9739 against a section symbol, so subtract out
9740 the output section's address but not the
9741 offset of the input section in the output
9743 outrel
.r_addend
-= osec
->vma
;
9746 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
9750 sreloc
= elf_section_data (input_section
)->sreloc
;
9754 loc
= sreloc
->contents
;
9755 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
9756 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
9758 /* If this reloc is against an external symbol, it will
9759 be computed at runtime, so there's no need to do
9760 anything now. However, for the sake of prelink ensure
9761 that the section contents are a known value. */
9764 unresolved_reloc
= FALSE
;
9765 /* The value chosen here is quite arbitrary as ld.so
9766 ignores section contents except for the special
9767 case of .opd where the contents might be accessed
9768 before relocation. Choose zero, as that won't
9769 cause reloc overflow. */
9772 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
9773 to improve backward compatibility with older
9775 if (r_type
== R_PPC64_ADDR64
)
9776 addend
= outrel
.r_addend
;
9777 /* Adjust pc_relative relocs to have zero in *r_offset. */
9778 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
9779 addend
= (input_section
->output_section
->vma
9780 + input_section
->output_offset
9787 case R_PPC64_GLOB_DAT
:
9788 case R_PPC64_JMP_SLOT
:
9789 case R_PPC64_RELATIVE
:
9790 /* We shouldn't ever see these dynamic relocs in relocatable
9794 case R_PPC64_PLTGOT16
:
9795 case R_PPC64_PLTGOT16_DS
:
9796 case R_PPC64_PLTGOT16_HA
:
9797 case R_PPC64_PLTGOT16_HI
:
9798 case R_PPC64_PLTGOT16_LO
:
9799 case R_PPC64_PLTGOT16_LO_DS
:
9800 case R_PPC64_PLTREL32
:
9801 case R_PPC64_PLTREL64
:
9802 /* These ones haven't been implemented yet. */
9804 (*_bfd_error_handler
)
9805 (_("%B: relocation %s is not supported for symbol %s."),
9807 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
9809 bfd_set_error (bfd_error_invalid_operation
);
9814 /* Do any further special processing. */
9820 case R_PPC64_ADDR16_HA
:
9821 case R_PPC64_ADDR16_HIGHERA
:
9822 case R_PPC64_ADDR16_HIGHESTA
:
9823 case R_PPC64_GOT16_HA
:
9824 case R_PPC64_PLTGOT16_HA
:
9825 case R_PPC64_PLT16_HA
:
9826 case R_PPC64_TOC16_HA
:
9827 case R_PPC64_SECTOFF_HA
:
9828 case R_PPC64_TPREL16_HA
:
9829 case R_PPC64_DTPREL16_HA
:
9830 case R_PPC64_GOT_TLSGD16_HA
:
9831 case R_PPC64_GOT_TLSLD16_HA
:
9832 case R_PPC64_GOT_TPREL16_HA
:
9833 case R_PPC64_GOT_DTPREL16_HA
:
9834 case R_PPC64_TPREL16_HIGHER
:
9835 case R_PPC64_TPREL16_HIGHERA
:
9836 case R_PPC64_TPREL16_HIGHEST
:
9837 case R_PPC64_TPREL16_HIGHESTA
:
9838 case R_PPC64_DTPREL16_HIGHER
:
9839 case R_PPC64_DTPREL16_HIGHERA
:
9840 case R_PPC64_DTPREL16_HIGHEST
:
9841 case R_PPC64_DTPREL16_HIGHESTA
:
9842 /* It's just possible that this symbol is a weak symbol
9843 that's not actually defined anywhere. In that case,
9844 'sec' would be NULL, and we should leave the symbol
9845 alone (it will be set to zero elsewhere in the link). */
9847 /* Add 0x10000 if sign bit in 0:15 is set.
9848 Bits 0:15 are not used. */
9852 case R_PPC64_ADDR16_DS
:
9853 case R_PPC64_ADDR16_LO_DS
:
9854 case R_PPC64_GOT16_DS
:
9855 case R_PPC64_GOT16_LO_DS
:
9856 case R_PPC64_PLT16_LO_DS
:
9857 case R_PPC64_SECTOFF_DS
:
9858 case R_PPC64_SECTOFF_LO_DS
:
9859 case R_PPC64_TOC16_DS
:
9860 case R_PPC64_TOC16_LO_DS
:
9861 case R_PPC64_PLTGOT16_DS
:
9862 case R_PPC64_PLTGOT16_LO_DS
:
9863 case R_PPC64_GOT_TPREL16_DS
:
9864 case R_PPC64_GOT_TPREL16_LO_DS
:
9865 case R_PPC64_GOT_DTPREL16_DS
:
9866 case R_PPC64_GOT_DTPREL16_LO_DS
:
9867 case R_PPC64_TPREL16_DS
:
9868 case R_PPC64_TPREL16_LO_DS
:
9869 case R_PPC64_DTPREL16_DS
:
9870 case R_PPC64_DTPREL16_LO_DS
:
9871 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9873 /* If this reloc is against an lq insn, then the value must be
9874 a multiple of 16. This is somewhat of a hack, but the
9875 "correct" way to do this by defining _DQ forms of all the
9876 _DS relocs bloats all reloc switches in this file. It
9877 doesn't seem to make much sense to use any of these relocs
9878 in data, so testing the insn should be safe. */
9879 if ((insn
& (0x3f << 26)) == (56u << 26))
9881 if (((relocation
+ addend
) & mask
) != 0)
9883 (*_bfd_error_handler
)
9884 (_("%B: error: relocation %s not a multiple of %d"),
9886 ppc64_elf_howto_table
[r_type
]->name
,
9888 bfd_set_error (bfd_error_bad_value
);
9895 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9896 because such sections are not SEC_ALLOC and thus ld.so will
9897 not process them. */
9898 if (unresolved_reloc
9899 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9900 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
9902 (*_bfd_error_handler
)
9903 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9906 (long) rel
->r_offset
,
9907 ppc64_elf_howto_table
[(int) r_type
]->name
,
9908 h
->elf
.root
.root
.string
);
9912 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
9920 if (r
!= bfd_reloc_ok
)
9922 if (sym_name
== NULL
)
9923 sym_name
= "(null)";
9924 if (r
== bfd_reloc_overflow
)
9929 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9930 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
9932 /* Assume this is a call protected by other code that
9933 detects the symbol is undefined. If this is the case,
9934 we can safely ignore the overflow. If not, the
9935 program is hosed anyway, and a little warning isn't
9941 if (!((*info
->callbacks
->reloc_overflow
)
9942 (info
, sym_name
, ppc64_elf_howto_table
[r_type
]->name
,
9943 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
9948 (*_bfd_error_handler
)
9949 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9952 (long) rel
->r_offset
,
9953 ppc64_elf_howto_table
[r_type
]->name
,
9964 /* Adjust the value of any local symbols in opd sections. */
9967 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
9968 const char *name ATTRIBUTE_UNUSED
,
9969 Elf_Internal_Sym
*elfsym
,
9970 asection
*input_sec
,
9971 struct elf_link_hash_entry
*h
)
9973 long *opd_adjust
, adjust
;
9979 opd_adjust
= get_opd_info (input_sec
);
9980 if (opd_adjust
== NULL
)
9983 value
= elfsym
->st_value
- input_sec
->output_offset
;
9984 if (!info
->relocatable
)
9985 value
-= input_sec
->output_section
->vma
;
9987 adjust
= opd_adjust
[value
/ 8];
9989 elfsym
->st_value
= 0;
9991 elfsym
->st_value
+= adjust
;
9995 /* Finish up dynamic symbol handling. We set the contents of various
9996 dynamic sections here. */
9999 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10000 struct bfd_link_info
*info
,
10001 struct elf_link_hash_entry
*h
,
10002 Elf_Internal_Sym
*sym
)
10004 struct ppc_link_hash_table
*htab
;
10006 struct plt_entry
*ent
;
10007 Elf_Internal_Rela rela
;
10010 htab
= ppc_hash_table (info
);
10011 dynobj
= htab
->elf
.dynobj
;
10013 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10014 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10016 /* This symbol has an entry in the procedure linkage
10017 table. Set it up. */
10019 if (htab
->plt
== NULL
10020 || htab
->relplt
== NULL
10021 || htab
->glink
== NULL
)
10024 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10025 fill in the PLT entry. */
10026 rela
.r_offset
= (htab
->plt
->output_section
->vma
10027 + htab
->plt
->output_offset
10028 + ent
->plt
.offset
);
10029 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
10030 rela
.r_addend
= ent
->addend
;
10032 loc
= htab
->relplt
->contents
;
10033 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
10034 * sizeof (Elf64_External_Rela
));
10035 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10038 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
10040 Elf_Internal_Rela rela
;
10043 /* This symbol needs a copy reloc. Set it up. */
10045 if (h
->dynindx
== -1
10046 || (h
->root
.type
!= bfd_link_hash_defined
10047 && h
->root
.type
!= bfd_link_hash_defweak
)
10048 || htab
->relbss
== NULL
)
10051 rela
.r_offset
= (h
->root
.u
.def
.value
10052 + h
->root
.u
.def
.section
->output_section
->vma
10053 + h
->root
.u
.def
.section
->output_offset
);
10054 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
10056 loc
= htab
->relbss
->contents
;
10057 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10058 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10061 /* Mark some specially defined symbols as absolute. */
10062 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
10063 sym
->st_shndx
= SHN_ABS
;
10068 /* Used to decide how to sort relocs in an optimal manner for the
10069 dynamic linker, before writing them out. */
10071 static enum elf_reloc_type_class
10072 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
10074 enum elf_ppc64_reloc_type r_type
;
10076 r_type
= ELF64_R_TYPE (rela
->r_info
);
10079 case R_PPC64_RELATIVE
:
10080 return reloc_class_relative
;
10081 case R_PPC64_JMP_SLOT
:
10082 return reloc_class_plt
;
10084 return reloc_class_copy
;
10086 return reloc_class_normal
;
10090 /* Finish up the dynamic sections. */
10093 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
10094 struct bfd_link_info
*info
)
10096 struct ppc_link_hash_table
*htab
;
10100 htab
= ppc_hash_table (info
);
10101 dynobj
= htab
->elf
.dynobj
;
10102 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10104 if (htab
->elf
.dynamic_sections_created
)
10106 Elf64_External_Dyn
*dyncon
, *dynconend
;
10108 if (sdyn
== NULL
|| htab
->got
== NULL
)
10111 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
10112 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10113 for (; dyncon
< dynconend
; dyncon
++)
10115 Elf_Internal_Dyn dyn
;
10118 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10125 case DT_PPC64_GLINK
:
10127 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10128 /* We stupidly defined DT_PPC64_GLINK to be the start
10129 of glink rather than the first entry point, which is
10130 what ld.so needs, and now have a bigger stub to
10131 support automatic multiple TOCs. */
10132 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
10136 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10139 dyn
.d_un
.d_ptr
= s
->vma
;
10142 case DT_PPC64_OPDSZ
:
10143 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10146 dyn
.d_un
.d_val
= s
->size
;
10151 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10156 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10160 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10164 /* Don't count procedure linkage table relocs in the
10165 overall reloc count. */
10169 dyn
.d_un
.d_val
-= s
->size
;
10173 /* We may not be using the standard ELF linker script.
10174 If .rela.plt is the first .rela section, we adjust
10175 DT_RELA to not include it. */
10179 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
10181 dyn
.d_un
.d_ptr
+= s
->size
;
10185 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10189 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
10191 /* Fill in the first entry in the global offset table.
10192 We use it to hold the link-time TOCbase. */
10193 bfd_put_64 (output_bfd
,
10194 elf_gp (output_bfd
) + TOC_BASE_OFF
,
10195 htab
->got
->contents
);
10197 /* Set .got entry size. */
10198 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
10201 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
10203 /* Set .plt entry size. */
10204 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
10208 /* We need to handle writing out multiple GOT sections ourselves,
10209 since we didn't add them to DYNOBJ. We know dynobj is the first
10211 while ((dynobj
= dynobj
->link_next
) != NULL
)
10215 if (!is_ppc64_elf_target (dynobj
->xvec
))
10218 s
= ppc64_elf_tdata (dynobj
)->got
;
10221 && s
->output_section
!= bfd_abs_section_ptr
10222 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10223 s
->contents
, s
->output_offset
,
10226 s
= ppc64_elf_tdata (dynobj
)->relgot
;
10229 && s
->output_section
!= bfd_abs_section_ptr
10230 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10231 s
->contents
, s
->output_offset
,
10239 #include "elf64-target.h"