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 /* Fix bad default arch selected for a 64 bit input bfd when the
2404 default is 32 bit. */
2407 ppc64_elf_object_p (bfd
*abfd
)
2409 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2411 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2413 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2415 /* Relies on arch after 32 bit default being 64 bit default. */
2416 abfd
->arch_info
= abfd
->arch_info
->next
;
2417 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2423 /* Support for core dump NOTE sections. */
2426 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2428 size_t offset
, size
;
2430 if (note
->descsz
!= 504)
2434 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2437 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2443 /* Make a ".reg/999" section. */
2444 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2445 size
, note
->descpos
+ offset
);
2449 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2451 if (note
->descsz
!= 136)
2454 elf_tdata (abfd
)->core_program
2455 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2456 elf_tdata (abfd
)->core_command
2457 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2462 /* Merge backend specific data from an object file to the output
2463 object file when linking. */
2466 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2468 /* Check if we have the same endianess. */
2469 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2470 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2471 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2475 if (bfd_big_endian (ibfd
))
2476 msg
= _("%B: compiled for a big endian system "
2477 "and target is little endian");
2479 msg
= _("%B: compiled for a little endian system "
2480 "and target is big endian");
2482 (*_bfd_error_handler
) (msg
, ibfd
);
2484 bfd_set_error (bfd_error_wrong_format
);
2491 /* Add extra PPC sections. */
2493 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2495 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2496 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2497 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2498 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2499 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2500 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2501 { NULL
, 0, 0, 0, 0 }
2504 struct _ppc64_elf_section_data
2506 struct bfd_elf_section_data elf
;
2508 /* An array with one entry for each opd function descriptor. */
2511 /* Points to the function code section for local opd entries. */
2512 asection
**func_sec
;
2513 /* After editing .opd, adjust references to opd local syms. */
2517 /* An array for toc sections, indexed by offset/8.
2518 Specifies the relocation symbol index used at a given toc offset. */
2522 #define ppc64_elf_section_data(sec) \
2523 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2526 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2528 struct _ppc64_elf_section_data
*sdata
;
2529 bfd_size_type amt
= sizeof (*sdata
);
2531 sdata
= bfd_zalloc (abfd
, amt
);
2534 sec
->used_by_bfd
= sdata
;
2536 return _bfd_elf_new_section_hook (abfd
, sec
);
2540 get_opd_info (asection
* sec
)
2543 && ppc64_elf_section_data (sec
) != NULL
2544 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2545 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2549 /* Parameters for the qsort hook. */
2550 static asection
*synthetic_opd
;
2551 static bfd_boolean synthetic_relocatable
;
2553 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2556 compare_symbols (const void *ap
, const void *bp
)
2558 const asymbol
*a
= * (const asymbol
**) ap
;
2559 const asymbol
*b
= * (const asymbol
**) bp
;
2561 /* Section symbols first. */
2562 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2564 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2567 /* then .opd symbols. */
2568 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2570 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2573 /* then other code symbols. */
2574 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2575 == (SEC_CODE
| SEC_ALLOC
)
2576 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2577 != (SEC_CODE
| SEC_ALLOC
))
2580 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2581 != (SEC_CODE
| SEC_ALLOC
)
2582 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2583 == (SEC_CODE
| SEC_ALLOC
))
2586 if (synthetic_relocatable
)
2588 if (a
->section
->id
< b
->section
->id
)
2591 if (a
->section
->id
> b
->section
->id
)
2595 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2598 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2604 /* Search SYMS for a symbol of the given VALUE. */
2607 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2615 mid
= (lo
+ hi
) >> 1;
2616 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2618 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2628 mid
= (lo
+ hi
) >> 1;
2629 if (syms
[mid
]->section
->id
< id
)
2631 else if (syms
[mid
]->section
->id
> id
)
2633 else if (syms
[mid
]->value
< value
)
2635 else if (syms
[mid
]->value
> value
)
2644 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2648 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2649 long static_count
, asymbol
**static_syms
,
2650 long dyn_count
, asymbol
**dyn_syms
,
2657 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2659 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2664 opd
= bfd_get_section_by_name (abfd
, ".opd");
2668 symcount
= static_count
;
2670 symcount
+= dyn_count
;
2674 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2678 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2680 /* Use both symbol tables. */
2681 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2682 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2684 else if (!relocatable
&& static_count
== 0)
2685 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2687 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2689 synthetic_opd
= opd
;
2690 synthetic_relocatable
= relocatable
;
2691 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2693 if (!relocatable
&& symcount
> 1)
2696 /* Trim duplicate syms, since we may have merged the normal and
2697 dynamic symbols. Actually, we only care about syms that have
2698 different values, so trim any with the same value. */
2699 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2700 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2701 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2702 syms
[j
++] = syms
[i
];
2707 if (syms
[i
]->section
== opd
)
2711 for (; i
< symcount
; ++i
)
2712 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2713 != (SEC_CODE
| SEC_ALLOC
))
2714 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2718 for (; i
< symcount
; ++i
)
2719 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2723 for (; i
< symcount
; ++i
)
2724 if (syms
[i
]->section
!= opd
)
2728 for (; i
< symcount
; ++i
)
2729 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2730 != (SEC_CODE
| SEC_ALLOC
))
2735 if (opdsymend
== secsymend
)
2740 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2745 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2746 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2749 || ! (*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2753 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2757 while (r
< opd
->relocation
+ relcount
2758 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2761 if (r
== opd
->relocation
+ relcount
)
2764 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2767 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2770 sym
= *r
->sym_ptr_ptr
;
2771 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2772 sym
->section
->id
, sym
->value
+ r
->addend
))
2775 size
+= sizeof (asymbol
);
2776 size
+= strlen (syms
[i
]->name
) + 2;
2780 s
= *ret
= bfd_malloc (size
);
2787 names
= (char *) (s
+ count
);
2789 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2793 while (r
< opd
->relocation
+ relcount
2794 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2797 if (r
== opd
->relocation
+ relcount
)
2800 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2803 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2806 sym
= *r
->sym_ptr_ptr
;
2807 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2808 sym
->section
->id
, sym
->value
+ r
->addend
))
2813 s
->section
= sym
->section
;
2814 s
->value
= sym
->value
+ r
->addend
;
2817 len
= strlen (syms
[i
]->name
);
2818 memcpy (names
, syms
[i
]->name
, len
+ 1);
2829 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2833 free_contents_and_exit
:
2840 for (i
= secsymend
; i
< opdsymend
; ++i
)
2844 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2845 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2848 size
+= sizeof (asymbol
);
2849 size
+= strlen (syms
[i
]->name
) + 2;
2853 s
= *ret
= bfd_malloc (size
);
2857 goto free_contents_and_exit
;
2860 names
= (char *) (s
+ count
);
2862 for (i
= secsymend
; i
< opdsymend
; ++i
)
2866 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2867 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2871 asection
*sec
= abfd
->sections
;
2878 long mid
= (lo
+ hi
) >> 1;
2879 if (syms
[mid
]->section
->vma
< ent
)
2881 else if (syms
[mid
]->section
->vma
> ent
)
2885 sec
= syms
[mid
]->section
;
2890 if (lo
>= hi
&& lo
> codesecsym
)
2891 sec
= syms
[lo
- 1]->section
;
2893 for (; sec
!= NULL
; sec
= sec
->next
)
2897 if ((sec
->flags
& SEC_ALLOC
) == 0
2898 || (sec
->flags
& SEC_LOAD
) == 0)
2900 if ((sec
->flags
& SEC_CODE
) != 0)
2903 s
->value
= ent
- s
->section
->vma
;
2906 len
= strlen (syms
[i
]->name
);
2907 memcpy (names
, syms
[i
]->name
, len
+ 1);
2920 /* The following functions are specific to the ELF linker, while
2921 functions above are used generally. Those named ppc64_elf_* are
2922 called by the main ELF linker code. They appear in this file more
2923 or less in the order in which they are called. eg.
2924 ppc64_elf_check_relocs is called early in the link process,
2925 ppc64_elf_finish_dynamic_sections is one of the last functions
2928 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2929 functions have both a function code symbol and a function descriptor
2930 symbol. A call to foo in a relocatable object file looks like:
2937 The function definition in another object file might be:
2941 . .quad .TOC.@tocbase
2947 When the linker resolves the call during a static link, the branch
2948 unsurprisingly just goes to .foo and the .opd information is unused.
2949 If the function definition is in a shared library, things are a little
2950 different: The call goes via a plt call stub, the opd information gets
2951 copied to the plt, and the linker patches the nop.
2959 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2960 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2961 . std 2,40(1) # this is the general idea
2969 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2971 The "reloc ()" notation is supposed to indicate that the linker emits
2972 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2975 What are the difficulties here? Well, firstly, the relocations
2976 examined by the linker in check_relocs are against the function code
2977 sym .foo, while the dynamic relocation in the plt is emitted against
2978 the function descriptor symbol, foo. Somewhere along the line, we need
2979 to carefully copy dynamic link information from one symbol to the other.
2980 Secondly, the generic part of the elf linker will make .foo a dynamic
2981 symbol as is normal for most other backends. We need foo dynamic
2982 instead, at least for an application final link. However, when
2983 creating a shared library containing foo, we need to have both symbols
2984 dynamic so that references to .foo are satisfied during the early
2985 stages of linking. Otherwise the linker might decide to pull in a
2986 definition from some other object, eg. a static library.
2988 Update: As of August 2004, we support a new convention. Function
2989 calls may use the function descriptor symbol, ie. "bl foo". This
2990 behaves exactly as "bl .foo". */
2992 /* The linker needs to keep track of the number of relocs that it
2993 decides to copy as dynamic relocs in check_relocs for each symbol.
2994 This is so that it can later discard them if they are found to be
2995 unnecessary. We store the information in a field extending the
2996 regular ELF linker hash table. */
2998 struct ppc_dyn_relocs
3000 struct ppc_dyn_relocs
*next
;
3002 /* The input section of the reloc. */
3005 /* Total number of relocs copied for the input section. */
3006 bfd_size_type count
;
3008 /* Number of pc-relative relocs copied for the input section. */
3009 bfd_size_type pc_count
;
3012 /* Track GOT entries needed for a given symbol. We might need more
3013 than one got entry per symbol. */
3016 struct got_entry
*next
;
3018 /* The symbol addend that we'll be placing in the GOT. */
3021 /* Unlike other ELF targets, we use separate GOT entries for the same
3022 symbol referenced from different input files. This is to support
3023 automatic multiple TOC/GOT sections, where the TOC base can vary
3024 from one input file to another.
3026 Point to the BFD owning this GOT entry. */
3029 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3030 TLS_TPREL or TLS_DTPREL for tls entries. */
3033 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3036 bfd_signed_vma refcount
;
3041 /* The same for PLT. */
3044 struct plt_entry
*next
;
3050 bfd_signed_vma refcount
;
3055 /* Of those relocs that might be copied as dynamic relocs, this macro
3056 selects those that must be copied when linking a shared library,
3057 even when the symbol is local. */
3059 #define MUST_BE_DYN_RELOC(RTYPE) \
3060 ((RTYPE) != R_PPC64_REL32 \
3061 && (RTYPE) != R_PPC64_REL64 \
3062 && (RTYPE) != R_PPC64_REL30)
3064 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3065 copying dynamic variables from a shared lib into an app's dynbss
3066 section, and instead use a dynamic relocation to point into the
3067 shared lib. With code that gcc generates, it's vital that this be
3068 enabled; In the PowerPC64 ABI, the address of a function is actually
3069 the address of a function descriptor, which resides in the .opd
3070 section. gcc uses the descriptor directly rather than going via the
3071 GOT as some other ABI's do, which means that initialized function
3072 pointers must reference the descriptor. Thus, a function pointer
3073 initialized to the address of a function in a shared library will
3074 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3075 redefines the function descriptor symbol to point to the copy. This
3076 presents a problem as a plt entry for that function is also
3077 initialized from the function descriptor symbol and the copy reloc
3078 may not be initialized first. */
3079 #define ELIMINATE_COPY_RELOCS 1
3081 /* Section name for stubs is the associated section name plus this
3083 #define STUB_SUFFIX ".stub"
3086 ppc_stub_long_branch:
3087 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3088 destination, but a 24 bit branch in a stub section will reach.
3091 ppc_stub_plt_branch:
3092 Similar to the above, but a 24 bit branch in the stub section won't
3093 reach its destination.
3094 . addis %r12,%r2,xxx@toc@ha
3095 . ld %r11,xxx@toc@l(%r12)
3100 Used to call a function in a shared library. If it so happens that
3101 the plt entry referenced crosses a 64k boundary, then an extra
3102 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3103 xxx+16 as appropriate.
3104 . addis %r12,%r2,xxx@toc@ha
3106 . ld %r11,xxx+0@toc@l(%r12)
3107 . ld %r2,xxx+8@toc@l(%r12)
3109 . ld %r11,xxx+16@toc@l(%r12)
3112 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3113 code to adjust the value and save r2 to support multiple toc sections.
3114 A ppc_stub_long_branch with an r2 offset looks like:
3116 . addis %r2,%r2,off@ha
3117 . addi %r2,%r2,off@l
3120 A ppc_stub_plt_branch with an r2 offset looks like:
3122 . addis %r12,%r2,xxx@toc@ha
3123 . ld %r11,xxx@toc@l(%r12)
3124 . addis %r2,%r2,off@ha
3125 . addi %r2,%r2,off@l
3130 enum ppc_stub_type
{
3132 ppc_stub_long_branch
,
3133 ppc_stub_long_branch_r2off
,
3134 ppc_stub_plt_branch
,
3135 ppc_stub_plt_branch_r2off
,
3139 struct ppc_stub_hash_entry
{
3141 /* Base hash table entry structure. */
3142 struct bfd_hash_entry root
;
3144 enum ppc_stub_type stub_type
;
3146 /* The stub section. */
3149 /* Offset within stub_sec of the beginning of this stub. */
3150 bfd_vma stub_offset
;
3152 /* Given the symbol's value and its section we can determine its final
3153 value when building the stubs (so the stub knows where to jump. */
3154 bfd_vma target_value
;
3155 asection
*target_section
;
3157 /* The symbol table entry, if any, that this was derived from. */
3158 struct ppc_link_hash_entry
*h
;
3160 /* And the reloc addend that this was derived from. */
3163 /* Where this stub is being called from, or, in the case of combined
3164 stub sections, the first input section in the group. */
3168 struct ppc_branch_hash_entry
{
3170 /* Base hash table entry structure. */
3171 struct bfd_hash_entry root
;
3173 /* Offset within .branch_lt. */
3174 unsigned int offset
;
3176 /* Generation marker. */
3180 struct ppc_link_hash_entry
3182 struct elf_link_hash_entry elf
;
3184 /* A pointer to the most recently used stub hash entry against this
3186 struct ppc_stub_hash_entry
*stub_cache
;
3188 /* Track dynamic relocs copied for this symbol. */
3189 struct ppc_dyn_relocs
*dyn_relocs
;
3191 /* Link between function code and descriptor symbols. */
3192 struct ppc_link_hash_entry
*oh
;
3194 /* Flag function code and descriptor symbols. */
3195 unsigned int is_func
:1;
3196 unsigned int is_func_descriptor
:1;
3198 /* Whether global opd sym has been adjusted or not.
3199 After ppc64_elf_edit_opd has run, this flag should be set for all
3200 globals defined in any opd section. */
3201 unsigned int adjust_done
:1;
3203 /* Set if we twiddled this symbol to weak at some stage. */
3204 unsigned int was_undefined
:1;
3206 /* Contexts in which symbol is used in the GOT (or TOC).
3207 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3208 corresponding relocs are encountered during check_relocs.
3209 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3210 indicate the corresponding GOT entry type is not needed.
3211 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3212 a TPREL one. We use a separate flag rather than setting TPREL
3213 just for convenience in distinguishing the two cases. */
3214 #define TLS_GD 1 /* GD reloc. */
3215 #define TLS_LD 2 /* LD reloc. */
3216 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3217 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3218 #define TLS_TLS 16 /* Any TLS reloc. */
3219 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3220 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3224 /* ppc64 ELF linker hash table. */
3226 struct ppc_link_hash_table
3228 struct elf_link_hash_table elf
;
3230 /* The stub hash table. */
3231 struct bfd_hash_table stub_hash_table
;
3233 /* Another hash table for plt_branch stubs. */
3234 struct bfd_hash_table branch_hash_table
;
3236 /* Linker stub bfd. */
3239 /* Linker call-backs. */
3240 asection
* (*add_stub_section
) (const char *, asection
*);
3241 void (*layout_sections_again
) (void);
3243 /* Array to keep track of which stub sections have been created, and
3244 information on stub grouping. */
3246 /* This is the section to which stubs in the group will be attached. */
3248 /* The stub section. */
3250 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3254 /* Temp used when calculating TOC pointers. */
3257 /* Highest input section id. */
3260 /* Highest output section index. */
3263 /* List of input sections for each output section. */
3264 asection
**input_list
;
3266 /* Short-cuts to get to dynamic linker sections. */
3277 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3278 struct ppc_link_hash_entry
*tls_get_addr
;
3279 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3282 unsigned long stub_count
[ppc_stub_plt_call
];
3284 /* Set if we should emit symbols for stubs. */
3285 unsigned int emit_stub_syms
:1;
3288 unsigned int stub_error
:1;
3290 /* Flag set when small branches are detected. Used to
3291 select suitable defaults for the stub group size. */
3292 unsigned int has_14bit_branch
:1;
3294 /* Temp used by ppc64_elf_check_directives. */
3295 unsigned int twiddled_syms
:1;
3297 /* Incremented every time we size stubs. */
3298 unsigned int stub_iteration
;
3300 /* Small local sym to section mapping cache. */
3301 struct sym_sec_cache sym_sec
;
3304 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3306 #define ppc_hash_table(p) \
3307 ((struct ppc_link_hash_table *) ((p)->hash))
3309 #define ppc_stub_hash_lookup(table, string, create, copy) \
3310 ((struct ppc_stub_hash_entry *) \
3311 bfd_hash_lookup ((table), (string), (create), (copy)))
3313 #define ppc_branch_hash_lookup(table, string, create, copy) \
3314 ((struct ppc_branch_hash_entry *) \
3315 bfd_hash_lookup ((table), (string), (create), (copy)))
3317 /* Create an entry in the stub hash table. */
3319 static struct bfd_hash_entry
*
3320 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3321 struct bfd_hash_table
*table
,
3324 /* Allocate the structure if it has not already been allocated by a
3328 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3333 /* Call the allocation method of the superclass. */
3334 entry
= bfd_hash_newfunc (entry
, table
, string
);
3337 struct ppc_stub_hash_entry
*eh
;
3339 /* Initialize the local fields. */
3340 eh
= (struct ppc_stub_hash_entry
*) entry
;
3341 eh
->stub_type
= ppc_stub_none
;
3342 eh
->stub_sec
= NULL
;
3343 eh
->stub_offset
= 0;
3344 eh
->target_value
= 0;
3345 eh
->target_section
= NULL
;
3353 /* Create an entry in the branch hash table. */
3355 static struct bfd_hash_entry
*
3356 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3357 struct bfd_hash_table
*table
,
3360 /* Allocate the structure if it has not already been allocated by a
3364 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3369 /* Call the allocation method of the superclass. */
3370 entry
= bfd_hash_newfunc (entry
, table
, string
);
3373 struct ppc_branch_hash_entry
*eh
;
3375 /* Initialize the local fields. */
3376 eh
= (struct ppc_branch_hash_entry
*) entry
;
3384 /* Create an entry in a ppc64 ELF linker hash table. */
3386 static struct bfd_hash_entry
*
3387 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3388 struct bfd_hash_table
*table
,
3391 /* Allocate the structure if it has not already been allocated by a
3395 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3400 /* Call the allocation method of the superclass. */
3401 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3404 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3406 eh
->stub_cache
= NULL
;
3407 eh
->dyn_relocs
= NULL
;
3410 eh
->is_func_descriptor
= 0;
3411 eh
->adjust_done
= 0;
3412 eh
->was_undefined
= 0;
3419 /* Create a ppc64 ELF linker hash table. */
3421 static struct bfd_link_hash_table
*
3422 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3424 struct ppc_link_hash_table
*htab
;
3425 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3427 htab
= bfd_zmalloc (amt
);
3431 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3437 /* Init the stub hash table too. */
3438 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3441 /* And the branch hash table. */
3442 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3445 /* Initializing two fields of the union is just cosmetic. We really
3446 only care about glist, but when compiled on a 32-bit host the
3447 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3448 debugger inspection of these fields look nicer. */
3449 htab
->elf
.init_refcount
.refcount
= 0;
3450 htab
->elf
.init_refcount
.glist
= NULL
;
3451 htab
->elf
.init_offset
.offset
= 0;
3452 htab
->elf
.init_offset
.glist
= NULL
;
3454 return &htab
->elf
.root
;
3457 /* Free the derived linker hash table. */
3460 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3462 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3464 bfd_hash_table_free (&ret
->stub_hash_table
);
3465 bfd_hash_table_free (&ret
->branch_hash_table
);
3466 _bfd_generic_link_hash_table_free (hash
);
3469 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3472 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3474 struct ppc_link_hash_table
*htab
;
3476 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3478 /* Always hook our dynamic sections into the first bfd, which is the
3479 linker created stub bfd. This ensures that the GOT header is at
3480 the start of the output TOC section. */
3481 htab
= ppc_hash_table (info
);
3482 htab
->stub_bfd
= abfd
;
3483 htab
->elf
.dynobj
= abfd
;
3486 /* Build a name for an entry in the stub hash table. */
3489 ppc_stub_name (const asection
*input_section
,
3490 const asection
*sym_sec
,
3491 const struct ppc_link_hash_entry
*h
,
3492 const Elf_Internal_Rela
*rel
)
3497 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3498 offsets from a sym as a branch target? In fact, we could
3499 probably assume the addend is always zero. */
3500 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3504 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3505 stub_name
= bfd_malloc (len
);
3506 if (stub_name
!= NULL
)
3508 sprintf (stub_name
, "%08x.%s+%x",
3509 input_section
->id
& 0xffffffff,
3510 h
->elf
.root
.root
.string
,
3511 (int) rel
->r_addend
& 0xffffffff);
3516 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3517 stub_name
= bfd_malloc (len
);
3518 if (stub_name
!= NULL
)
3520 sprintf (stub_name
, "%08x.%x:%x+%x",
3521 input_section
->id
& 0xffffffff,
3522 sym_sec
->id
& 0xffffffff,
3523 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3524 (int) rel
->r_addend
& 0xffffffff);
3530 /* Look up an entry in the stub hash. Stub entries are cached because
3531 creating the stub name takes a bit of time. */
3533 static struct ppc_stub_hash_entry
*
3534 ppc_get_stub_entry (const asection
*input_section
,
3535 const asection
*sym_sec
,
3536 struct ppc_link_hash_entry
*h
,
3537 const Elf_Internal_Rela
*rel
,
3538 struct ppc_link_hash_table
*htab
)
3540 struct ppc_stub_hash_entry
*stub_entry
;
3541 const asection
*id_sec
;
3543 /* If this input section is part of a group of sections sharing one
3544 stub section, then use the id of the first section in the group.
3545 Stub names need to include a section id, as there may well be
3546 more than one stub used to reach say, printf, and we need to
3547 distinguish between them. */
3548 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3550 if (h
!= NULL
&& h
->stub_cache
!= NULL
3551 && h
->stub_cache
->h
== h
3552 && h
->stub_cache
->id_sec
== id_sec
)
3554 stub_entry
= h
->stub_cache
;
3560 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3561 if (stub_name
== NULL
)
3564 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3565 stub_name
, FALSE
, FALSE
);
3567 h
->stub_cache
= stub_entry
;
3575 /* Add a new stub entry to the stub hash. Not all fields of the new
3576 stub entry are initialised. */
3578 static struct ppc_stub_hash_entry
*
3579 ppc_add_stub (const char *stub_name
,
3581 struct ppc_link_hash_table
*htab
)
3585 struct ppc_stub_hash_entry
*stub_entry
;
3587 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3588 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3589 if (stub_sec
== NULL
)
3591 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3592 if (stub_sec
== NULL
)
3598 namelen
= strlen (link_sec
->name
);
3599 len
= namelen
+ sizeof (STUB_SUFFIX
);
3600 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3604 memcpy (s_name
, link_sec
->name
, namelen
);
3605 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3606 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3607 if (stub_sec
== NULL
)
3609 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3611 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3614 /* Enter this entry into the linker stub hash table. */
3615 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3617 if (stub_entry
== NULL
)
3619 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3620 section
->owner
, stub_name
);
3624 stub_entry
->stub_sec
= stub_sec
;
3625 stub_entry
->stub_offset
= 0;
3626 stub_entry
->id_sec
= link_sec
;
3630 /* Create sections for linker generated code. */
3633 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3635 struct ppc_link_hash_table
*htab
;
3638 htab
= ppc_hash_table (info
);
3640 /* Create .sfpr for code to save and restore fp regs. */
3641 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3642 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3643 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3644 if (htab
->sfpr
== NULL
3645 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3646 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3649 /* Create .glink for lazy dynamic linking support. */
3650 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3651 if (htab
->glink
== NULL
3652 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3653 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3656 /* Create .branch_lt for plt_branch stubs. */
3657 flags
= (SEC_ALLOC
| SEC_LOAD
3658 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3659 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3660 if (htab
->brlt
== NULL
3661 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3662 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3667 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3668 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3669 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3671 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3672 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3678 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3679 not already done. */
3682 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3684 asection
*got
, *relgot
;
3686 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3690 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3693 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3698 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3699 | SEC_LINKER_CREATED
);
3701 got
= bfd_make_section (abfd
, ".got");
3703 || !bfd_set_section_flags (abfd
, got
, flags
)
3704 || !bfd_set_section_alignment (abfd
, got
, 3))
3707 relgot
= bfd_make_section (abfd
, ".rela.got");
3709 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3710 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3713 ppc64_elf_tdata (abfd
)->got
= got
;
3714 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3718 /* Create the dynamic sections, and set up shortcuts. */
3721 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3723 struct ppc_link_hash_table
*htab
;
3725 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3728 htab
= ppc_hash_table (info
);
3730 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3731 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3732 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3733 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3735 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3737 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3738 || (!info
->shared
&& !htab
->relbss
))
3744 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3747 ppc64_elf_copy_indirect_symbol
3748 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3749 struct elf_link_hash_entry
*dir
,
3750 struct elf_link_hash_entry
*ind
)
3752 struct ppc_link_hash_entry
*edir
, *eind
;
3755 edir
= (struct ppc_link_hash_entry
*) dir
;
3756 eind
= (struct ppc_link_hash_entry
*) ind
;
3758 /* Copy over any dynamic relocs we may have on the indirect sym. */
3759 if (eind
->dyn_relocs
!= NULL
)
3761 if (edir
->dyn_relocs
!= NULL
)
3763 struct ppc_dyn_relocs
**pp
;
3764 struct ppc_dyn_relocs
*p
;
3766 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3769 /* Add reloc counts against the weak sym to the strong sym
3770 list. Merge any entries against the same section. */
3771 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3773 struct ppc_dyn_relocs
*q
;
3775 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3776 if (q
->sec
== p
->sec
)
3778 q
->pc_count
+= p
->pc_count
;
3779 q
->count
+= p
->count
;
3786 *pp
= edir
->dyn_relocs
;
3789 edir
->dyn_relocs
= eind
->dyn_relocs
;
3790 eind
->dyn_relocs
= NULL
;
3793 edir
->is_func
|= eind
->is_func
;
3794 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3795 edir
->tls_mask
|= eind
->tls_mask
;
3797 mask
= (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
3798 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
| ELF_LINK_NON_GOT_REF
3799 | ELF_LINK_HASH_NEEDS_PLT
);
3800 /* If called to transfer flags for a weakdef during processing
3801 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3802 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3803 if (ELIMINATE_COPY_RELOCS
3804 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3805 && (edir
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
3806 mask
&= ~ELF_LINK_NON_GOT_REF
;
3808 edir
->elf
.elf_link_hash_flags
|= eind
->elf
.elf_link_hash_flags
& mask
;
3810 /* If we were called to copy over info for a weak sym, that's all. */
3811 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3814 /* Copy over got entries that we may have already seen to the
3815 symbol which just became indirect. */
3816 if (eind
->elf
.got
.glist
!= NULL
)
3818 if (edir
->elf
.got
.glist
!= NULL
)
3820 struct got_entry
**entp
;
3821 struct got_entry
*ent
;
3823 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3825 struct got_entry
*dent
;
3827 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3828 if (dent
->addend
== ent
->addend
3829 && dent
->owner
== ent
->owner
3830 && dent
->tls_type
== ent
->tls_type
)
3832 dent
->got
.refcount
+= ent
->got
.refcount
;
3839 *entp
= edir
->elf
.got
.glist
;
3842 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3843 eind
->elf
.got
.glist
= NULL
;
3846 /* And plt entries. */
3847 if (eind
->elf
.plt
.plist
!= NULL
)
3849 if (edir
->elf
.plt
.plist
!= NULL
)
3851 struct plt_entry
**entp
;
3852 struct plt_entry
*ent
;
3854 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3856 struct plt_entry
*dent
;
3858 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3859 if (dent
->addend
== ent
->addend
)
3861 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3868 *entp
= edir
->elf
.plt
.plist
;
3871 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3872 eind
->elf
.plt
.plist
= NULL
;
3875 if (edir
->elf
.dynindx
== -1)
3877 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3878 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3879 eind
->elf
.dynindx
= -1;
3880 eind
->elf
.dynstr_index
= 0;
3883 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3886 /* Find the function descriptor hash entry from the given function code
3887 hash entry FH. Link the entries via their OH fields. */
3889 static struct ppc_link_hash_entry
*
3890 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3892 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3896 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3898 fdh
= (struct ppc_link_hash_entry
*)
3899 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3902 fdh
->is_func_descriptor
= 1;
3912 /* Hacks to support old ABI code.
3913 When making function calls, old ABI code references function entry
3914 points (dot symbols), while new ABI code references the function
3915 descriptor symbol. We need to make any combination of reference and
3916 definition work together, without breaking archive linking.
3918 For a defined function "foo" and an undefined call to "bar":
3919 An old object defines "foo" and ".foo", references ".bar" (possibly
3921 A new object defines "foo" and references "bar".
3923 A new object thus has no problem with its undefined symbols being
3924 satisfied by definitions in an old object. On the other hand, the
3925 old object won't have ".bar" satisfied by a new object. */
3927 /* Fix function descriptor symbols defined in .opd sections to be
3931 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
3932 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3933 Elf_Internal_Sym
*isym
,
3934 const char **name ATTRIBUTE_UNUSED
,
3935 flagword
*flags ATTRIBUTE_UNUSED
,
3937 bfd_vma
*value ATTRIBUTE_UNUSED
)
3940 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
3941 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
3945 /* This function makes an old ABI object reference to ".bar" cause the
3946 inclusion of a new ABI object archive that defines "bar". */
3948 static struct elf_link_hash_entry
*
3949 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
3950 struct bfd_link_info
*info
,
3953 struct elf_link_hash_entry
*h
;
3957 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
3964 len
= strlen (name
);
3965 dot_name
= bfd_alloc (abfd
, len
+ 2);
3966 if (dot_name
== NULL
)
3967 return (struct elf_link_hash_entry
*) 0 - 1;
3969 memcpy (dot_name
+ 1, name
, len
+ 1);
3970 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
3971 bfd_release (abfd
, dot_name
);
3975 /* This function satisfies all old ABI object references to ".bar" if a
3976 new ABI object defines "bar". Well, at least, undefined dot symbols
3977 are made weak. This stops later archive searches from including an
3978 object if we already have a function descriptor definition. It also
3979 prevents the linker complaining about undefined symbols.
3980 We also check and correct mismatched symbol visibility here. The
3981 most restrictive visibility of the function descriptor and the
3982 function entry symbol is used. */
3985 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
3987 struct bfd_link_info
*info
;
3988 struct ppc_link_hash_table
*htab
;
3989 struct ppc_link_hash_entry
*eh
;
3990 struct ppc_link_hash_entry
*fdh
;
3992 if (h
->root
.type
== bfd_link_hash_indirect
)
3995 if (h
->root
.type
== bfd_link_hash_warning
)
3996 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3998 if (h
->root
.root
.string
[0] != '.')
4002 htab
= ppc_hash_table (info
);
4003 eh
= (struct ppc_link_hash_entry
*) h
;
4004 fdh
= get_fdh (eh
, htab
);
4007 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4008 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4009 if (entry_vis
< descr_vis
)
4010 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4011 else if (entry_vis
> descr_vis
)
4012 eh
->elf
.other
+= descr_vis
- entry_vis
;
4014 if (eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4016 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4017 eh
->was_undefined
= 1;
4018 htab
->twiddled_syms
= 1;
4026 ppc64_elf_check_directives (bfd
*abfd ATTRIBUTE_UNUSED
,
4027 struct bfd_link_info
*info
)
4029 struct ppc_link_hash_table
*htab
;
4030 extern const bfd_target bfd_elf64_powerpc_vec
;
4031 extern const bfd_target bfd_elf64_powerpcle_vec
;
4033 htab
= ppc_hash_table (info
);
4034 if (htab
->elf
.root
.creator
!= &bfd_elf64_powerpc_vec
4035 && htab
->elf
.root
.creator
!= &bfd_elf64_powerpcle_vec
)
4038 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, info
);
4040 /* We need to fix the undefs list for any syms we have twiddled to
4042 if (htab
->twiddled_syms
)
4044 struct bfd_link_hash_entry
**pun
;
4046 pun
= &htab
->elf
.root
.undefs
;
4047 while (*pun
!= NULL
)
4049 struct bfd_link_hash_entry
*h
= *pun
;
4051 if (h
->type
!= bfd_link_hash_undefined
4052 && h
->type
!= bfd_link_hash_common
)
4056 if (h
== htab
->elf
.root
.undefs_tail
)
4058 if (pun
== &htab
->elf
.root
.undefs
)
4059 htab
->elf
.root
.undefs_tail
= NULL
;
4061 /* pun points at an und_next field. Go back to
4062 the start of the link_hash_entry. */
4063 htab
->elf
.root
.undefs_tail
= (struct bfd_link_hash_entry
*)
4064 ((char *) pun
- ((char *) &h
->und_next
- (char *) h
));
4072 htab
->twiddled_syms
= 0;
4078 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4079 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4081 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4082 char *local_got_tls_masks
;
4084 if (local_got_ents
== NULL
)
4086 bfd_size_type size
= symtab_hdr
->sh_info
;
4088 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4089 local_got_ents
= bfd_zalloc (abfd
, size
);
4090 if (local_got_ents
== NULL
)
4092 elf_local_got_ents (abfd
) = local_got_ents
;
4095 if ((tls_type
& TLS_EXPLICIT
) == 0)
4097 struct got_entry
*ent
;
4099 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4100 if (ent
->addend
== r_addend
4101 && ent
->owner
== abfd
4102 && ent
->tls_type
== tls_type
)
4106 bfd_size_type amt
= sizeof (*ent
);
4107 ent
= bfd_alloc (abfd
, amt
);
4110 ent
->next
= local_got_ents
[r_symndx
];
4111 ent
->addend
= r_addend
;
4113 ent
->tls_type
= tls_type
;
4114 ent
->got
.refcount
= 0;
4115 local_got_ents
[r_symndx
] = ent
;
4117 ent
->got
.refcount
+= 1;
4120 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4121 local_got_tls_masks
[r_symndx
] |= tls_type
;
4126 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4128 struct plt_entry
*ent
;
4130 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4131 if (ent
->addend
== addend
)
4135 bfd_size_type amt
= sizeof (*ent
);
4136 ent
= bfd_alloc (abfd
, amt
);
4139 ent
->next
= eh
->elf
.plt
.plist
;
4140 ent
->addend
= addend
;
4141 ent
->plt
.refcount
= 0;
4142 eh
->elf
.plt
.plist
= ent
;
4144 ent
->plt
.refcount
+= 1;
4145 eh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
4150 /* Look through the relocs for a section during the first phase, and
4151 calculate needed space in the global offset table, procedure
4152 linkage table, and dynamic reloc sections. */
4155 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4156 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4158 struct ppc_link_hash_table
*htab
;
4159 Elf_Internal_Shdr
*symtab_hdr
;
4160 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4161 const Elf_Internal_Rela
*rel
;
4162 const Elf_Internal_Rela
*rel_end
;
4164 asection
**opd_sym_map
;
4166 if (info
->relocatable
)
4169 /* Don't do anything special with non-loaded, non-alloced sections.
4170 In particular, any relocs in such sections should not affect GOT
4171 and PLT reference counting (ie. we don't allow them to create GOT
4172 or PLT entries), there's no possibility or desire to optimize TLS
4173 relocs, and there's not much point in propagating relocs to shared
4174 libs that the dynamic linker won't relocate. */
4175 if ((sec
->flags
& SEC_ALLOC
) == 0)
4178 htab
= ppc_hash_table (info
);
4179 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4181 sym_hashes
= elf_sym_hashes (abfd
);
4182 sym_hashes_end
= (sym_hashes
4183 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4184 - symtab_hdr
->sh_info
);
4188 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4190 /* Garbage collection needs some extra help with .opd sections.
4191 We don't want to necessarily keep everything referenced by
4192 relocs in .opd, as that would keep all functions. Instead,
4193 if we reference an .opd symbol (a function descriptor), we
4194 want to keep the function code symbol's section. This is
4195 easy for global symbols, but for local syms we need to keep
4196 information about the associated function section. Later, if
4197 edit_opd deletes entries, we'll use this array to adjust
4198 local syms in .opd. */
4200 asection
*func_section
;
4205 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4206 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4207 if (opd_sym_map
== NULL
)
4209 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4212 if (htab
->sfpr
== NULL
4213 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4216 rel_end
= relocs
+ sec
->reloc_count
;
4217 for (rel
= relocs
; rel
< rel_end
; rel
++)
4219 unsigned long r_symndx
;
4220 struct elf_link_hash_entry
*h
;
4221 enum elf_ppc64_reloc_type r_type
;
4224 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4225 if (r_symndx
< symtab_hdr
->sh_info
)
4228 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4230 r_type
= ELF64_R_TYPE (rel
->r_info
);
4233 case R_PPC64_GOT_TLSLD16
:
4234 case R_PPC64_GOT_TLSLD16_LO
:
4235 case R_PPC64_GOT_TLSLD16_HI
:
4236 case R_PPC64_GOT_TLSLD16_HA
:
4237 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4238 tls_type
= TLS_TLS
| TLS_LD
;
4241 case R_PPC64_GOT_TLSGD16
:
4242 case R_PPC64_GOT_TLSGD16_LO
:
4243 case R_PPC64_GOT_TLSGD16_HI
:
4244 case R_PPC64_GOT_TLSGD16_HA
:
4245 tls_type
= TLS_TLS
| TLS_GD
;
4248 case R_PPC64_GOT_TPREL16_DS
:
4249 case R_PPC64_GOT_TPREL16_LO_DS
:
4250 case R_PPC64_GOT_TPREL16_HI
:
4251 case R_PPC64_GOT_TPREL16_HA
:
4253 info
->flags
|= DF_STATIC_TLS
;
4254 tls_type
= TLS_TLS
| TLS_TPREL
;
4257 case R_PPC64_GOT_DTPREL16_DS
:
4258 case R_PPC64_GOT_DTPREL16_LO_DS
:
4259 case R_PPC64_GOT_DTPREL16_HI
:
4260 case R_PPC64_GOT_DTPREL16_HA
:
4261 tls_type
= TLS_TLS
| TLS_DTPREL
;
4263 sec
->has_tls_reloc
= 1;
4267 case R_PPC64_GOT16_DS
:
4268 case R_PPC64_GOT16_HA
:
4269 case R_PPC64_GOT16_HI
:
4270 case R_PPC64_GOT16_LO
:
4271 case R_PPC64_GOT16_LO_DS
:
4272 /* This symbol requires a global offset table entry. */
4273 sec
->has_gp_reloc
= 1;
4274 if (ppc64_elf_tdata (abfd
)->got
== NULL
4275 && !create_got_section (abfd
, info
))
4280 struct ppc_link_hash_entry
*eh
;
4281 struct got_entry
*ent
;
4283 eh
= (struct ppc_link_hash_entry
*) h
;
4284 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4285 if (ent
->addend
== rel
->r_addend
4286 && ent
->owner
== abfd
4287 && ent
->tls_type
== tls_type
)
4291 bfd_size_type amt
= sizeof (*ent
);
4292 ent
= bfd_alloc (abfd
, amt
);
4295 ent
->next
= eh
->elf
.got
.glist
;
4296 ent
->addend
= rel
->r_addend
;
4298 ent
->tls_type
= tls_type
;
4299 ent
->got
.refcount
= 0;
4300 eh
->elf
.got
.glist
= ent
;
4302 ent
->got
.refcount
+= 1;
4303 eh
->tls_mask
|= tls_type
;
4306 /* This is a global offset table entry for a local symbol. */
4307 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4308 rel
->r_addend
, tls_type
))
4312 case R_PPC64_PLT16_HA
:
4313 case R_PPC64_PLT16_HI
:
4314 case R_PPC64_PLT16_LO
:
4317 /* This symbol requires a procedure linkage table entry. We
4318 actually build the entry in adjust_dynamic_symbol,
4319 because this might be a case of linking PIC code without
4320 linking in any dynamic objects, in which case we don't
4321 need to generate a procedure linkage table after all. */
4324 /* It does not make sense to have a procedure linkage
4325 table entry for a local symbol. */
4326 bfd_set_error (bfd_error_bad_value
);
4330 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4335 /* The following relocations don't need to propagate the
4336 relocation if linking a shared object since they are
4337 section relative. */
4338 case R_PPC64_SECTOFF
:
4339 case R_PPC64_SECTOFF_LO
:
4340 case R_PPC64_SECTOFF_HI
:
4341 case R_PPC64_SECTOFF_HA
:
4342 case R_PPC64_SECTOFF_DS
:
4343 case R_PPC64_SECTOFF_LO_DS
:
4344 case R_PPC64_DTPREL16
:
4345 case R_PPC64_DTPREL16_LO
:
4346 case R_PPC64_DTPREL16_HI
:
4347 case R_PPC64_DTPREL16_HA
:
4348 case R_PPC64_DTPREL16_DS
:
4349 case R_PPC64_DTPREL16_LO_DS
:
4350 case R_PPC64_DTPREL16_HIGHER
:
4351 case R_PPC64_DTPREL16_HIGHERA
:
4352 case R_PPC64_DTPREL16_HIGHEST
:
4353 case R_PPC64_DTPREL16_HIGHESTA
:
4358 case R_PPC64_TOC16_LO
:
4359 case R_PPC64_TOC16_HI
:
4360 case R_PPC64_TOC16_HA
:
4361 case R_PPC64_TOC16_DS
:
4362 case R_PPC64_TOC16_LO_DS
:
4363 sec
->has_gp_reloc
= 1;
4366 /* This relocation describes the C++ object vtable hierarchy.
4367 Reconstruct it for later use during GC. */
4368 case R_PPC64_GNU_VTINHERIT
:
4369 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4373 /* This relocation describes which C++ vtable entries are actually
4374 used. Record for later use during GC. */
4375 case R_PPC64_GNU_VTENTRY
:
4376 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4381 case R_PPC64_REL14_BRTAKEN
:
4382 case R_PPC64_REL14_BRNTAKEN
:
4383 htab
->has_14bit_branch
= 1;
4389 /* We may need a .plt entry if the function this reloc
4390 refers to is in a shared lib. */
4391 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4394 if (h
== &htab
->tls_get_addr
->elf
4395 || h
== &htab
->tls_get_addr_fd
->elf
)
4396 sec
->has_tls_reloc
= 1;
4397 else if (htab
->tls_get_addr
== NULL
4398 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4399 && (h
->root
.root
.string
[15] == 0
4400 || h
->root
.root
.string
[15] == '@'))
4402 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4403 sec
->has_tls_reloc
= 1;
4405 else if (htab
->tls_get_addr_fd
== NULL
4406 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4407 && (h
->root
.root
.string
[14] == 0
4408 || h
->root
.root
.string
[14] == '@'))
4410 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4411 sec
->has_tls_reloc
= 1;
4416 case R_PPC64_TPREL64
:
4417 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4419 info
->flags
|= DF_STATIC_TLS
;
4422 case R_PPC64_DTPMOD64
:
4423 if (rel
+ 1 < rel_end
4424 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4425 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4426 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4428 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4431 case R_PPC64_DTPREL64
:
4432 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4434 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4435 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4436 /* This is the second reloc of a dtpmod, dtprel pair.
4437 Don't mark with TLS_DTPREL. */
4441 sec
->has_tls_reloc
= 1;
4444 struct ppc_link_hash_entry
*eh
;
4445 eh
= (struct ppc_link_hash_entry
*) h
;
4446 eh
->tls_mask
|= tls_type
;
4449 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4450 rel
->r_addend
, tls_type
))
4453 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4455 /* One extra to simplify get_tls_mask. */
4456 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4457 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4458 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4461 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4462 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4464 /* Mark the second slot of a GD or LD entry.
4465 -1 to indicate GD and -2 to indicate LD. */
4466 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4467 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4468 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4469 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4472 case R_PPC64_TPREL16
:
4473 case R_PPC64_TPREL16_LO
:
4474 case R_PPC64_TPREL16_HI
:
4475 case R_PPC64_TPREL16_HA
:
4476 case R_PPC64_TPREL16_DS
:
4477 case R_PPC64_TPREL16_LO_DS
:
4478 case R_PPC64_TPREL16_HIGHER
:
4479 case R_PPC64_TPREL16_HIGHERA
:
4480 case R_PPC64_TPREL16_HIGHEST
:
4481 case R_PPC64_TPREL16_HIGHESTA
:
4484 info
->flags
|= DF_STATIC_TLS
;
4489 case R_PPC64_ADDR64
:
4490 if (opd_sym_map
!= NULL
4491 && rel
+ 1 < rel_end
4492 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4496 if (h
->root
.root
.string
[0] == '.'
4497 && h
->root
.root
.string
[1] != 0
4498 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4501 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4507 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4512 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4520 case R_PPC64_ADDR14
:
4521 case R_PPC64_ADDR14_BRNTAKEN
:
4522 case R_PPC64_ADDR14_BRTAKEN
:
4523 case R_PPC64_ADDR16
:
4524 case R_PPC64_ADDR16_DS
:
4525 case R_PPC64_ADDR16_HA
:
4526 case R_PPC64_ADDR16_HI
:
4527 case R_PPC64_ADDR16_HIGHER
:
4528 case R_PPC64_ADDR16_HIGHERA
:
4529 case R_PPC64_ADDR16_HIGHEST
:
4530 case R_PPC64_ADDR16_HIGHESTA
:
4531 case R_PPC64_ADDR16_LO
:
4532 case R_PPC64_ADDR16_LO_DS
:
4533 case R_PPC64_ADDR24
:
4534 case R_PPC64_ADDR32
:
4535 case R_PPC64_UADDR16
:
4536 case R_PPC64_UADDR32
:
4537 case R_PPC64_UADDR64
:
4539 if (h
!= NULL
&& !info
->shared
)
4540 /* We may need a copy reloc. */
4541 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
4543 /* Don't propagate .opd relocs. */
4544 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4547 /* If we are creating a shared library, and this is a reloc
4548 against a global symbol, or a non PC relative reloc
4549 against a local symbol, then we need to copy the reloc
4550 into the shared library. However, if we are linking with
4551 -Bsymbolic, we do not need to copy a reloc against a
4552 global symbol which is defined in an object we are
4553 including in the link (i.e., DEF_REGULAR is set). At
4554 this point we have not seen all the input files, so it is
4555 possible that DEF_REGULAR is not set now but will be set
4556 later (it is never cleared). In case of a weak definition,
4557 DEF_REGULAR may be cleared later by a strong definition in
4558 a shared library. We account for that possibility below by
4559 storing information in the dyn_relocs field of the hash
4560 table entry. A similar situation occurs when creating
4561 shared libraries and symbol visibility changes render the
4564 If on the other hand, we are creating an executable, we
4565 may need to keep relocations for symbols satisfied by a
4566 dynamic library if we manage to avoid copy relocs for the
4570 && (MUST_BE_DYN_RELOC (r_type
)
4572 && (! info
->symbolic
4573 || h
->root
.type
== bfd_link_hash_defweak
4574 || (h
->elf_link_hash_flags
4575 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
4576 || (ELIMINATE_COPY_RELOCS
4579 && (h
->root
.type
== bfd_link_hash_defweak
4580 || (h
->elf_link_hash_flags
4581 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
4583 struct ppc_dyn_relocs
*p
;
4584 struct ppc_dyn_relocs
**head
;
4586 /* We must copy these reloc types into the output file.
4587 Create a reloc section in dynobj and make room for
4594 name
= (bfd_elf_string_from_elf_section
4596 elf_elfheader (abfd
)->e_shstrndx
,
4597 elf_section_data (sec
)->rel_hdr
.sh_name
));
4601 if (strncmp (name
, ".rela", 5) != 0
4602 || strcmp (bfd_get_section_name (abfd
, sec
),
4605 (*_bfd_error_handler
)
4606 (_("%B: bad relocation section name `%s\'"),
4608 bfd_set_error (bfd_error_bad_value
);
4611 dynobj
= htab
->elf
.dynobj
;
4612 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4617 sreloc
= bfd_make_section (dynobj
, name
);
4618 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4619 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4620 if ((sec
->flags
& SEC_ALLOC
) != 0)
4621 flags
|= SEC_ALLOC
| SEC_LOAD
;
4623 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
4624 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4627 elf_section_data (sec
)->sreloc
= sreloc
;
4630 /* If this is a global symbol, we count the number of
4631 relocations we need for this symbol. */
4634 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4638 /* Track dynamic relocs needed for local syms too.
4639 We really need local syms available to do this
4643 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4648 head
= ((struct ppc_dyn_relocs
**)
4649 &elf_section_data (s
)->local_dynrel
);
4653 if (p
== NULL
|| p
->sec
!= sec
)
4655 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4666 if (!MUST_BE_DYN_RELOC (r_type
))
4679 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4680 of the code entry point, and its section. */
4683 opd_entry_value (asection
*opd_sec
,
4685 asection
**code_sec
,
4688 bfd
*opd_bfd
= opd_sec
->owner
;
4689 Elf_Internal_Rela
*lo
, *hi
, *look
;
4691 /* Go find the opd reloc at the sym address. */
4692 lo
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4693 BFD_ASSERT (lo
!= NULL
);
4694 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4698 look
= lo
+ (hi
- lo
) / 2;
4699 if (look
->r_offset
< offset
)
4701 else if (look
->r_offset
> offset
)
4705 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4706 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4707 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4709 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4713 if (symndx
< symtab_hdr
->sh_info
)
4715 Elf_Internal_Sym
*sym
;
4717 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4720 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4721 symtab_hdr
->sh_info
,
4722 0, NULL
, NULL
, NULL
);
4724 return (bfd_vma
) -1;
4725 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4729 val
= sym
->st_value
;
4731 if ((sym
->st_shndx
!= SHN_UNDEF
4732 && sym
->st_shndx
< SHN_LORESERVE
)
4733 || sym
->st_shndx
> SHN_HIRESERVE
)
4734 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4735 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4739 struct elf_link_hash_entry
**sym_hashes
;
4740 struct elf_link_hash_entry
*rh
;
4742 sym_hashes
= elf_sym_hashes (opd_bfd
);
4743 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4744 while (rh
->root
.type
== bfd_link_hash_indirect
4745 || rh
->root
.type
== bfd_link_hash_warning
)
4746 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4747 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4748 || rh
->root
.type
== bfd_link_hash_defweak
);
4749 val
= rh
->root
.u
.def
.value
;
4750 sec
= rh
->root
.u
.def
.section
;
4752 val
+= look
->r_addend
;
4753 if (code_off
!= NULL
)
4755 if (code_sec
!= NULL
)
4757 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4758 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4764 return (bfd_vma
) -1;
4767 /* Return the section that should be marked against GC for a given
4771 ppc64_elf_gc_mark_hook (asection
*sec
,
4772 struct bfd_link_info
*info
,
4773 Elf_Internal_Rela
*rel
,
4774 struct elf_link_hash_entry
*h
,
4775 Elf_Internal_Sym
*sym
)
4779 /* First mark all our entry sym sections. */
4780 if (info
->gc_sym_list
!= NULL
)
4782 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4783 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4785 info
->gc_sym_list
= NULL
;
4788 struct ppc_link_hash_entry
*eh
;
4790 eh
= (struct ppc_link_hash_entry
*)
4791 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4794 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4795 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4798 if (eh
->is_func_descriptor
)
4799 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4800 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4801 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4802 eh
->elf
.root
.u
.def
.value
,
4803 &rsec
, NULL
) != (bfd_vma
) -1)
4809 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4811 rsec
= eh
->elf
.root
.u
.def
.section
;
4813 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4817 while (sym
!= NULL
);
4820 /* Syms return NULL if we're marking .opd, so we avoid marking all
4821 function sections, as all functions are referenced in .opd. */
4823 if (get_opd_info (sec
) != NULL
)
4828 enum elf_ppc64_reloc_type r_type
;
4829 struct ppc_link_hash_entry
*eh
;
4831 r_type
= ELF64_R_TYPE (rel
->r_info
);
4834 case R_PPC64_GNU_VTINHERIT
:
4835 case R_PPC64_GNU_VTENTRY
:
4839 switch (h
->root
.type
)
4841 case bfd_link_hash_defined
:
4842 case bfd_link_hash_defweak
:
4843 eh
= (struct ppc_link_hash_entry
*) h
;
4844 if (eh
->oh
!= NULL
&& eh
->oh
->is_func_descriptor
)
4847 /* Function descriptor syms cause the associated
4848 function code sym section to be marked. */
4849 if (eh
->is_func_descriptor
)
4851 /* They also mark their opd section. */
4852 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4853 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4854 ppc64_elf_gc_mark_hook
);
4856 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4858 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4859 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4860 eh
->elf
.root
.u
.def
.value
,
4861 &rsec
, NULL
) != (bfd_vma
) -1)
4863 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4864 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4865 ppc64_elf_gc_mark_hook
);
4868 rsec
= h
->root
.u
.def
.section
;
4871 case bfd_link_hash_common
:
4872 rsec
= h
->root
.u
.c
.p
->section
;
4882 asection
**opd_sym_section
;
4884 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4885 opd_sym_section
= get_opd_info (rsec
);
4886 if (opd_sym_section
!= NULL
)
4889 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4891 rsec
= opd_sym_section
[sym
->st_value
/ 8];
4898 /* Update the .got, .plt. and dynamic reloc reference counts for the
4899 section being removed. */
4902 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4903 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4905 struct ppc_link_hash_table
*htab
;
4906 Elf_Internal_Shdr
*symtab_hdr
;
4907 struct elf_link_hash_entry
**sym_hashes
;
4908 struct got_entry
**local_got_ents
;
4909 const Elf_Internal_Rela
*rel
, *relend
;
4911 if ((sec
->flags
& SEC_ALLOC
) == 0)
4914 elf_section_data (sec
)->local_dynrel
= NULL
;
4916 htab
= ppc_hash_table (info
);
4917 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4918 sym_hashes
= elf_sym_hashes (abfd
);
4919 local_got_ents
= elf_local_got_ents (abfd
);
4921 relend
= relocs
+ sec
->reloc_count
;
4922 for (rel
= relocs
; rel
< relend
; rel
++)
4924 unsigned long r_symndx
;
4925 enum elf_ppc64_reloc_type r_type
;
4926 struct elf_link_hash_entry
*h
= NULL
;
4929 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4930 r_type
= ELF64_R_TYPE (rel
->r_info
);
4931 if (r_symndx
>= symtab_hdr
->sh_info
)
4933 struct ppc_link_hash_entry
*eh
;
4934 struct ppc_dyn_relocs
**pp
;
4935 struct ppc_dyn_relocs
*p
;
4937 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4938 eh
= (struct ppc_link_hash_entry
*) h
;
4940 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4943 /* Everything must go for SEC. */
4951 case R_PPC64_GOT_TLSLD16
:
4952 case R_PPC64_GOT_TLSLD16_LO
:
4953 case R_PPC64_GOT_TLSLD16_HI
:
4954 case R_PPC64_GOT_TLSLD16_HA
:
4955 ppc64_tlsld_got (abfd
)->refcount
-= 1;
4956 tls_type
= TLS_TLS
| TLS_LD
;
4959 case R_PPC64_GOT_TLSGD16
:
4960 case R_PPC64_GOT_TLSGD16_LO
:
4961 case R_PPC64_GOT_TLSGD16_HI
:
4962 case R_PPC64_GOT_TLSGD16_HA
:
4963 tls_type
= TLS_TLS
| TLS_GD
;
4966 case R_PPC64_GOT_TPREL16_DS
:
4967 case R_PPC64_GOT_TPREL16_LO_DS
:
4968 case R_PPC64_GOT_TPREL16_HI
:
4969 case R_PPC64_GOT_TPREL16_HA
:
4970 tls_type
= TLS_TLS
| TLS_TPREL
;
4973 case R_PPC64_GOT_DTPREL16_DS
:
4974 case R_PPC64_GOT_DTPREL16_LO_DS
:
4975 case R_PPC64_GOT_DTPREL16_HI
:
4976 case R_PPC64_GOT_DTPREL16_HA
:
4977 tls_type
= TLS_TLS
| TLS_DTPREL
;
4981 case R_PPC64_GOT16_DS
:
4982 case R_PPC64_GOT16_HA
:
4983 case R_PPC64_GOT16_HI
:
4984 case R_PPC64_GOT16_LO
:
4985 case R_PPC64_GOT16_LO_DS
:
4988 struct got_entry
*ent
;
4993 ent
= local_got_ents
[r_symndx
];
4995 for (; ent
!= NULL
; ent
= ent
->next
)
4996 if (ent
->addend
== rel
->r_addend
4997 && ent
->owner
== abfd
4998 && ent
->tls_type
== tls_type
)
5002 if (ent
->got
.refcount
> 0)
5003 ent
->got
.refcount
-= 1;
5007 case R_PPC64_PLT16_HA
:
5008 case R_PPC64_PLT16_HI
:
5009 case R_PPC64_PLT16_LO
:
5013 case R_PPC64_REL14_BRNTAKEN
:
5014 case R_PPC64_REL14_BRTAKEN
:
5018 struct plt_entry
*ent
;
5020 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5021 if (ent
->addend
== rel
->r_addend
)
5025 if (ent
->plt
.refcount
> 0)
5026 ent
->plt
.refcount
-= 1;
5037 /* The maximum size of .sfpr. */
5038 #define SFPR_MAX (218*4)
5040 struct sfpr_def_parms
5042 const char name
[12];
5043 unsigned char lo
, hi
;
5044 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5045 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5048 /* Auto-generate _save*, _rest* functions in .sfpr. */
5051 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5053 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5055 size_t len
= strlen (parm
->name
);
5056 bfd_boolean writing
= FALSE
;
5059 memcpy (sym
, parm
->name
, len
);
5062 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5064 struct elf_link_hash_entry
*h
;
5066 sym
[len
+ 0] = i
/ 10 + '0';
5067 sym
[len
+ 1] = i
% 10 + '0';
5068 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5070 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
5072 h
->root
.type
= bfd_link_hash_defined
;
5073 h
->root
.u
.def
.section
= htab
->sfpr
;
5074 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5076 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
5077 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5079 if (htab
->sfpr
->contents
== NULL
)
5081 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5082 if (htab
->sfpr
->contents
== NULL
)
5088 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5090 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5092 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5093 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5101 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5103 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5108 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5110 p
= savegpr0 (abfd
, p
, r
);
5111 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5113 bfd_put_32 (abfd
, BLR
, p
);
5118 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5120 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5125 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5127 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5129 p
= restgpr0 (abfd
, p
, r
);
5130 bfd_put_32 (abfd
, MTLR_R0
, p
);
5134 p
= restgpr0 (abfd
, p
, 30);
5135 p
= restgpr0 (abfd
, p
, 31);
5137 bfd_put_32 (abfd
, BLR
, p
);
5142 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5144 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5149 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5151 p
= savegpr1 (abfd
, p
, r
);
5152 bfd_put_32 (abfd
, BLR
, p
);
5157 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5159 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5164 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5166 p
= restgpr1 (abfd
, p
, r
);
5167 bfd_put_32 (abfd
, BLR
, p
);
5172 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5174 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5179 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5181 p
= savefpr (abfd
, p
, r
);
5182 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5184 bfd_put_32 (abfd
, BLR
, p
);
5189 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5191 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5196 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5198 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5200 p
= restfpr (abfd
, p
, r
);
5201 bfd_put_32 (abfd
, MTLR_R0
, p
);
5205 p
= restfpr (abfd
, p
, 30);
5206 p
= restfpr (abfd
, p
, 31);
5208 bfd_put_32 (abfd
, BLR
, p
);
5213 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5215 p
= savefpr (abfd
, p
, r
);
5216 bfd_put_32 (abfd
, BLR
, p
);
5221 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5223 p
= restfpr (abfd
, p
, r
);
5224 bfd_put_32 (abfd
, BLR
, p
);
5229 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5231 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5233 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5238 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5240 p
= savevr (abfd
, p
, r
);
5241 bfd_put_32 (abfd
, BLR
, p
);
5246 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5248 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5250 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5255 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5257 p
= restvr (abfd
, p
, r
);
5258 bfd_put_32 (abfd
, BLR
, p
);
5262 /* Called via elf_link_hash_traverse to transfer dynamic linking
5263 information on function code symbol entries to their corresponding
5264 function descriptor symbol entries. */
5267 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5269 struct bfd_link_info
*info
;
5270 struct ppc_link_hash_table
*htab
;
5271 struct plt_entry
*ent
;
5272 struct ppc_link_hash_entry
*fh
;
5273 struct ppc_link_hash_entry
*fdh
;
5274 bfd_boolean force_local
;
5276 fh
= (struct ppc_link_hash_entry
*) h
;
5277 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5280 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5281 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5284 htab
= ppc_hash_table (info
);
5286 /* Resolve undefined references to dot-symbols as the value
5287 in the function descriptor, if we have one in a regular object.
5288 This is to satisfy cases like ".quad .foo". Calls to functions
5289 in dynamic objects are handled elsewhere. */
5290 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5291 && fh
->was_undefined
5292 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5293 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5294 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5295 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5296 fh
->oh
->elf
.root
.u
.def
.value
,
5297 &fh
->elf
.root
.u
.def
.section
,
5298 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5300 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5301 fh
->elf
.elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
5304 /* If this is a function code symbol, transfer dynamic linking
5305 information to the function descriptor symbol. */
5309 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5310 if (ent
->plt
.refcount
> 0)
5313 || fh
->elf
.root
.root
.string
[0] != '.'
5314 || fh
->elf
.root
.root
.string
[1] == '\0')
5317 /* Find the corresponding function descriptor symbol. Create it
5318 as undefined if necessary. */
5320 fdh
= get_fdh (fh
, htab
);
5322 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5323 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5324 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5328 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5329 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5333 struct bfd_link_hash_entry
*bh
;
5335 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
5336 newsym
= bfd_make_empty_symbol (abfd
);
5337 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
5338 newsym
->section
= bfd_und_section_ptr
;
5340 newsym
->flags
= BSF_OBJECT
;
5341 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5342 newsym
->flags
|= BSF_WEAK
;
5344 bh
= &fdh
->elf
.root
;
5345 if ( !(_bfd_generic_link_add_one_symbol
5346 (info
, abfd
, newsym
->name
, newsym
->flags
,
5347 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
5351 fdh
= (struct ppc_link_hash_entry
*) bh
;
5352 fdh
->elf
.elf_link_hash_flags
&= ~ELF_LINK_NON_ELF
;
5354 fdh
->elf
.type
= STT_OBJECT
;
5358 && (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
5360 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
5361 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) != 0
5362 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5363 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5365 if (fdh
->elf
.dynindx
== -1)
5366 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5368 fdh
->elf
.elf_link_hash_flags
5369 |= (fh
->elf
.elf_link_hash_flags
& (ELF_LINK_HASH_REF_REGULAR
5370 | ELF_LINK_HASH_REF_DYNAMIC
5371 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
5372 | ELF_LINK_NON_GOT_REF
));
5373 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5375 struct plt_entry
**ep
= &fdh
->elf
.plt
.plist
;
5378 *ep
= fh
->elf
.plt
.plist
;
5379 fh
->elf
.plt
.plist
= NULL
;
5380 fdh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
5382 fdh
->is_func_descriptor
= 1;
5387 /* Now that the info is on the function descriptor, clear the
5388 function code sym info. Any function code syms for which we
5389 don't have a definition in a regular file, we force local.
5390 This prevents a shared library from exporting syms that have
5391 been imported from another library. Function code syms that
5392 are really in the library we must leave global to prevent the
5393 linker dragging in a definition from a static library. */
5396 && ((fh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
5398 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
5399 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0));
5400 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5405 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5406 this hook to a) provide some gcc support functions, and b) transfer
5407 dynamic linking information gathered so far on function code symbol
5408 entries, to their corresponding function descriptor symbol entries. */
5411 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5412 struct bfd_link_info
*info
)
5414 struct ppc_link_hash_table
*htab
;
5416 const struct sfpr_def_parms funcs
[] =
5418 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5419 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5420 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5421 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5422 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5423 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5424 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5425 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5426 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5427 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5428 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5429 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5432 htab
= ppc_hash_table (info
);
5433 if (htab
->sfpr
== NULL
)
5434 /* We don't have any relocs. */
5437 /* Provide any missing _save* and _rest* functions. */
5438 htab
->sfpr
->size
= 0;
5439 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5440 if (!sfpr_define (info
, &funcs
[i
]))
5443 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5445 if (htab
->sfpr
->size
== 0)
5446 _bfd_strip_section_from_output (info
, htab
->sfpr
);
5451 /* Adjust a symbol defined by a dynamic object and referenced by a
5452 regular object. The current definition is in some section of the
5453 dynamic object, but we're not including those sections. We have to
5454 change the definition to something the rest of the link can
5458 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5459 struct elf_link_hash_entry
*h
)
5461 struct ppc_link_hash_table
*htab
;
5463 unsigned int power_of_two
;
5465 htab
= ppc_hash_table (info
);
5467 /* Deal with function syms. */
5468 if (h
->type
== STT_FUNC
5469 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
5471 /* Clear procedure linkage table information for any symbol that
5472 won't need a .plt entry. */
5473 struct plt_entry
*ent
;
5474 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5475 if (ent
->plt
.refcount
> 0)
5478 || SYMBOL_CALLS_LOCAL (info
, h
)
5479 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5480 && h
->root
.type
== bfd_link_hash_undefweak
))
5482 h
->plt
.plist
= NULL
;
5483 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5487 h
->plt
.plist
= NULL
;
5489 /* If this is a weak symbol, and there is a real definition, the
5490 processor independent code will have arranged for us to see the
5491 real definition first, and we can just use the same value. */
5492 if (h
->weakdef
!= NULL
)
5494 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
5495 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
5496 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
5497 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
5498 if (ELIMINATE_COPY_RELOCS
)
5499 h
->elf_link_hash_flags
5500 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
5501 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
5505 /* If we are creating a shared library, we must presume that the
5506 only references to the symbol are via the global offset table.
5507 For such cases we need not do anything here; the relocations will
5508 be handled correctly by relocate_section. */
5512 /* If there are no references to this symbol that do not use the
5513 GOT, we don't need to generate a copy reloc. */
5514 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
5517 if (ELIMINATE_COPY_RELOCS
)
5519 struct ppc_link_hash_entry
* eh
;
5520 struct ppc_dyn_relocs
*p
;
5522 eh
= (struct ppc_link_hash_entry
*) h
;
5523 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5525 s
= p
->sec
->output_section
;
5526 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5530 /* If we didn't find any dynamic relocs in read-only sections, then
5531 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5534 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
5539 if (h
->plt
.plist
!= NULL
)
5541 /* We should never get here, but unfortunately there are versions
5542 of gcc out there that improperly (for this ABI) put initialized
5543 function pointers, vtable refs and suchlike in read-only
5544 sections. Allow them to proceed, but warn that this might
5545 break at runtime. */
5546 (*_bfd_error_handler
)
5547 (_("copy reloc against `%s' requires lazy plt linking; "
5548 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5549 h
->root
.root
.string
);
5552 /* This is a reference to a symbol defined by a dynamic object which
5553 is not a function. */
5555 /* We must allocate the symbol in our .dynbss section, which will
5556 become part of the .bss section of the executable. There will be
5557 an entry for this symbol in the .dynsym section. The dynamic
5558 object will contain position independent code, so all references
5559 from the dynamic object to this symbol will go through the global
5560 offset table. The dynamic linker will use the .dynsym entry to
5561 determine the address it must put in the global offset table, so
5562 both the dynamic object and the regular object will refer to the
5563 same memory location for the variable. */
5565 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5566 to copy the initial value out of the dynamic object and into the
5567 runtime process image. We need to remember the offset into the
5568 .rela.bss section we are going to use. */
5569 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5571 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5572 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
5575 /* We need to figure out the alignment required for this symbol. I
5576 have no idea how ELF linkers handle this. */
5577 power_of_two
= bfd_log2 (h
->size
);
5578 if (power_of_two
> 4)
5581 /* Apply the required alignment. */
5583 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5584 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5586 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5590 /* Define the symbol as being at this point in the section. */
5591 h
->root
.u
.def
.section
= s
;
5592 h
->root
.u
.def
.value
= s
->size
;
5594 /* Increment the section size to make room for the symbol. */
5600 /* If given a function descriptor symbol, hide both the function code
5601 sym and the descriptor. */
5603 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5604 struct elf_link_hash_entry
*h
,
5605 bfd_boolean force_local
)
5607 struct ppc_link_hash_entry
*eh
;
5608 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5610 eh
= (struct ppc_link_hash_entry
*) h
;
5611 if (eh
->is_func_descriptor
)
5613 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5618 struct ppc_link_hash_table
*htab
;
5621 /* We aren't supposed to use alloca in BFD because on
5622 systems which do not have alloca the version in libiberty
5623 calls xmalloc, which might cause the program to crash
5624 when it runs out of memory. This function doesn't have a
5625 return status, so there's no way to gracefully return an
5626 error. So cheat. We know that string[-1] can be safely
5627 accessed; It's either a string in an ELF string table,
5628 or allocated in an objalloc structure. */
5630 p
= eh
->elf
.root
.root
.string
- 1;
5633 htab
= ppc_hash_table (info
);
5634 fh
= (struct ppc_link_hash_entry
*)
5635 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5638 /* Unfortunately, if it so happens that the string we were
5639 looking for was allocated immediately before this string,
5640 then we overwrote the string terminator. That's the only
5641 reason the lookup should fail. */
5644 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5645 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5647 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5648 fh
= (struct ppc_link_hash_entry
*)
5649 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5658 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5663 get_sym_h (struct elf_link_hash_entry
**hp
,
5664 Elf_Internal_Sym
**symp
,
5667 Elf_Internal_Sym
**locsymsp
,
5668 unsigned long r_symndx
,
5671 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5673 if (r_symndx
>= symtab_hdr
->sh_info
)
5675 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5676 struct elf_link_hash_entry
*h
;
5678 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5679 while (h
->root
.type
== bfd_link_hash_indirect
5680 || h
->root
.type
== bfd_link_hash_warning
)
5681 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5689 if (symsecp
!= NULL
)
5691 asection
*symsec
= NULL
;
5692 if (h
->root
.type
== bfd_link_hash_defined
5693 || h
->root
.type
== bfd_link_hash_defweak
)
5694 symsec
= h
->root
.u
.def
.section
;
5698 if (tls_maskp
!= NULL
)
5700 struct ppc_link_hash_entry
*eh
;
5702 eh
= (struct ppc_link_hash_entry
*) h
;
5703 *tls_maskp
= &eh
->tls_mask
;
5708 Elf_Internal_Sym
*sym
;
5709 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5711 if (locsyms
== NULL
)
5713 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5714 if (locsyms
== NULL
)
5715 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5716 symtab_hdr
->sh_info
,
5717 0, NULL
, NULL
, NULL
);
5718 if (locsyms
== NULL
)
5720 *locsymsp
= locsyms
;
5722 sym
= locsyms
+ r_symndx
;
5730 if (symsecp
!= NULL
)
5732 asection
*symsec
= NULL
;
5733 if ((sym
->st_shndx
!= SHN_UNDEF
5734 && sym
->st_shndx
< SHN_LORESERVE
)
5735 || sym
->st_shndx
> SHN_HIRESERVE
)
5736 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5740 if (tls_maskp
!= NULL
)
5742 struct got_entry
**lgot_ents
;
5746 lgot_ents
= elf_local_got_ents (ibfd
);
5747 if (lgot_ents
!= NULL
)
5749 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5750 tls_mask
= &lgot_masks
[r_symndx
];
5752 *tls_maskp
= tls_mask
;
5758 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5759 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5760 type suitable for optimization, and 1 otherwise. */
5763 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5764 Elf_Internal_Sym
**locsymsp
,
5765 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5767 unsigned long r_symndx
;
5769 struct elf_link_hash_entry
*h
;
5770 Elf_Internal_Sym
*sym
;
5774 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5775 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5778 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5780 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5783 /* Look inside a TOC section too. */
5786 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5787 off
= h
->root
.u
.def
.value
;
5790 off
= sym
->st_value
;
5791 off
+= rel
->r_addend
;
5792 BFD_ASSERT (off
% 8 == 0);
5793 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5794 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5795 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5797 if (toc_symndx
!= NULL
)
5798 *toc_symndx
= r_symndx
;
5800 || ((h
->root
.type
== bfd_link_hash_defined
5801 || h
->root
.type
== bfd_link_hash_defweak
)
5802 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
5803 && (next_r
== -1 || next_r
== -2))
5808 /* Adjust all global syms defined in opd sections. In gcc generated
5809 code for the old ABI, these will already have been done. */
5812 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5814 struct ppc_link_hash_entry
*eh
;
5818 if (h
->root
.type
== bfd_link_hash_indirect
)
5821 if (h
->root
.type
== bfd_link_hash_warning
)
5822 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5824 if (h
->root
.type
!= bfd_link_hash_defined
5825 && h
->root
.type
!= bfd_link_hash_defweak
)
5828 eh
= (struct ppc_link_hash_entry
*) h
;
5829 if (eh
->adjust_done
)
5832 sym_sec
= eh
->elf
.root
.u
.def
.section
;
5833 opd_adjust
= get_opd_info (sym_sec
);
5834 if (opd_adjust
!= NULL
)
5836 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
5839 /* This entry has been deleted. */
5840 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
5843 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
5844 if (elf_discarded_section (dsec
))
5846 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
5850 eh
->elf
.root
.u
.def
.value
= 0;
5851 eh
->elf
.root
.u
.def
.section
= dsec
;
5854 eh
->elf
.root
.u
.def
.value
+= adjust
;
5855 eh
->adjust_done
= 1;
5860 /* Remove unused Official Procedure Descriptor entries. Currently we
5861 only remove those associated with functions in discarded link-once
5862 sections, or weakly defined functions that have been overridden. It
5863 would be possible to remove many more entries for statically linked
5867 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
5868 bfd_boolean non_overlapping
)
5871 bfd_boolean some_edited
= FALSE
;
5872 asection
*need_pad
= NULL
;
5874 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5877 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5878 Elf_Internal_Shdr
*symtab_hdr
;
5879 Elf_Internal_Sym
*local_syms
;
5880 struct elf_link_hash_entry
**sym_hashes
;
5884 bfd_boolean need_edit
, add_aux_fields
;
5885 bfd_size_type cnt_16b
= 0;
5887 sec
= bfd_get_section_by_name (ibfd
, ".opd");
5891 amt
= sec
->size
* sizeof (long) / 8;
5892 opd_adjust
= get_opd_info (sec
);
5893 if (opd_adjust
== NULL
)
5895 /* Must be a ld -r link. ie. check_relocs hasn't been
5897 opd_adjust
= bfd_zalloc (obfd
, amt
);
5898 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
5900 memset (opd_adjust
, 0, amt
);
5902 if (sec
->output_section
== bfd_abs_section_ptr
)
5905 /* Look through the section relocs. */
5906 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
5910 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5911 sym_hashes
= elf_sym_hashes (ibfd
);
5913 /* Read the relocations. */
5914 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5916 if (relstart
== NULL
)
5919 /* First run through the relocs to check they are sane, and to
5920 determine whether we need to edit this opd section. */
5924 relend
= relstart
+ sec
->reloc_count
;
5925 for (rel
= relstart
; rel
< relend
; )
5927 enum elf_ppc64_reloc_type r_type
;
5928 unsigned long r_symndx
;
5930 struct elf_link_hash_entry
*h
;
5931 Elf_Internal_Sym
*sym
;
5933 /* .opd contains a regular array of 16 or 24 byte entries. We're
5934 only interested in the reloc pointing to a function entry
5936 if (rel
->r_offset
!= offset
5937 || rel
+ 1 >= relend
5938 || (rel
+ 1)->r_offset
!= offset
+ 8)
5940 /* If someone messes with .opd alignment then after a
5941 "ld -r" we might have padding in the middle of .opd.
5942 Also, there's nothing to prevent someone putting
5943 something silly in .opd with the assembler. No .opd
5944 optimization for them! */
5946 (*_bfd_error_handler
)
5947 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
5952 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
5953 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
5955 (*_bfd_error_handler
)
5956 (_("%B: unexpected reloc type %u in .opd section"),
5962 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5963 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
5967 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
5969 const char *sym_name
;
5971 sym_name
= h
->root
.root
.string
;
5973 sym_name
= bfd_elf_local_sym_name (ibfd
, sym
);
5975 (*_bfd_error_handler
)
5976 (_("%B: undefined sym `%s' in .opd section"),
5982 /* opd entries are always for functions defined in the
5983 current input bfd. If the symbol isn't defined in the
5984 input bfd, then we won't be using the function in this
5985 bfd; It must be defined in a linkonce section in another
5986 bfd, or is weak. It's also possible that we are
5987 discarding the function due to a linker script /DISCARD/,
5988 which we test for via the output_section. */
5989 if (sym_sec
->owner
!= ibfd
5990 || sym_sec
->output_section
== bfd_abs_section_ptr
)
5995 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
5997 if (sec
->size
== offset
+ 24)
6002 if (rel
== relend
&& sec
->size
== offset
+ 16)
6010 if (rel
->r_offset
== offset
+ 24)
6012 else if (rel
->r_offset
!= offset
+ 16)
6014 else if (rel
+ 1 < relend
6015 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6016 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6021 else if (rel
+ 2 < relend
6022 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6023 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6032 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6034 if (need_edit
|| add_aux_fields
)
6036 Elf_Internal_Rela
*write_rel
;
6037 bfd_byte
*rptr
, *wptr
;
6038 bfd_byte
*new_contents
= NULL
;
6042 /* This seems a waste of time as input .opd sections are all
6043 zeros as generated by gcc, but I suppose there's no reason
6044 this will always be so. We might start putting something in
6045 the third word of .opd entries. */
6046 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6049 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6054 if (local_syms
!= NULL
6055 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6057 if (elf_section_data (sec
)->relocs
!= relstart
)
6061 sec
->contents
= loc
;
6062 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6065 elf_section_data (sec
)->relocs
= relstart
;
6067 wptr
= sec
->contents
;
6068 rptr
= sec
->contents
;
6069 new_contents
= sec
->contents
;
6073 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6074 if (new_contents
== NULL
)
6077 wptr
= new_contents
;
6080 write_rel
= relstart
;
6084 for (rel
= relstart
; rel
< relend
; rel
++)
6086 unsigned long r_symndx
;
6088 struct elf_link_hash_entry
*h
;
6089 Elf_Internal_Sym
*sym
;
6091 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6092 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6096 if (rel
->r_offset
== offset
)
6098 struct ppc_link_hash_entry
*fdh
= NULL
;
6100 /* See if the .opd entry is full 24 byte or
6101 16 byte (with fd_aux entry overlapped with next
6104 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6105 || (rel
+ 3 < relend
6106 && rel
[2].r_offset
== offset
+ 16
6107 && rel
[3].r_offset
== offset
+ 24
6108 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6109 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6113 && h
->root
.root
.string
[0] == '.')
6114 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6115 ppc_hash_table (info
));
6117 skip
= (sym_sec
->owner
!= ibfd
6118 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6121 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6123 /* Arrange for the function descriptor sym
6125 fdh
->elf
.root
.u
.def
.value
= 0;
6126 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6128 opd_adjust
[rel
->r_offset
/ 8] = -1;
6132 /* We'll be keeping this opd entry. */
6136 /* Redefine the function descriptor symbol to
6137 this location in the opd section. It is
6138 necessary to update the value here rather
6139 than using an array of adjustments as we do
6140 for local symbols, because various places
6141 in the generic ELF code use the value
6142 stored in u.def.value. */
6143 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6144 fdh
->adjust_done
= 1;
6147 /* Local syms are a bit tricky. We could
6148 tweak them as they can be cached, but
6149 we'd need to look through the local syms
6150 for the function descriptor sym which we
6151 don't have at the moment. So keep an
6152 array of adjustments. */
6153 opd_adjust
[rel
->r_offset
/ 8]
6154 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6157 memcpy (wptr
, rptr
, opd_ent_size
);
6158 wptr
+= opd_ent_size
;
6159 if (add_aux_fields
&& opd_ent_size
== 16)
6161 memset (wptr
, '\0', 8);
6165 rptr
+= opd_ent_size
;
6166 offset
+= opd_ent_size
;
6171 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
6174 /* We won't be needing dynamic relocs here. */
6175 struct ppc_dyn_relocs
**pp
;
6176 struct ppc_dyn_relocs
*p
;
6179 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6180 else if (sym_sec
!= NULL
)
6181 pp
= ((struct ppc_dyn_relocs
**)
6182 &elf_section_data (sym_sec
)->local_dynrel
);
6184 pp
= ((struct ppc_dyn_relocs
**)
6185 &elf_section_data (sec
)->local_dynrel
);
6186 while ((p
= *pp
) != NULL
)
6201 /* We need to adjust any reloc offsets to point to the
6202 new opd entries. While we're at it, we may as well
6203 remove redundant relocs. */
6204 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6205 if (write_rel
!= rel
)
6206 memcpy (write_rel
, rel
, sizeof (*rel
));
6211 sec
->size
= wptr
- new_contents
;
6212 sec
->reloc_count
= write_rel
- relstart
;
6215 free (sec
->contents
);
6216 sec
->contents
= new_contents
;
6219 /* Fudge the size too, as this is used later in
6220 elf_bfd_final_link if we are emitting relocs. */
6221 elf_section_data (sec
)->rel_hdr
.sh_size
6222 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6223 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6226 else if (elf_section_data (sec
)->relocs
!= relstart
)
6229 if (local_syms
!= NULL
6230 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6232 if (!info
->keep_memory
)
6235 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6240 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6242 /* If we are doing a final link and the last .opd entry is just 16 byte
6243 long, add a 8 byte padding after it. */
6244 if (need_pad
!= NULL
&& !info
->relocatable
)
6248 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6250 BFD_ASSERT (need_pad
->size
> 0);
6252 p
= bfd_malloc (need_pad
->size
+ 8);
6256 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6257 p
, 0, need_pad
->size
))
6260 need_pad
->contents
= p
;
6261 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6265 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6269 need_pad
->contents
= p
;
6272 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6273 need_pad
->size
+= 8;
6279 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6282 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6284 struct ppc_link_hash_table
*htab
;
6286 htab
= ppc_hash_table (info
);
6287 if (htab
->tls_get_addr
!= NULL
)
6289 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6291 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6292 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6293 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6295 htab
->tls_get_addr
= h
;
6297 if (htab
->tls_get_addr_fd
== NULL
6299 && h
->oh
->is_func_descriptor
)
6300 htab
->tls_get_addr_fd
= h
->oh
;
6303 if (htab
->tls_get_addr_fd
!= NULL
)
6305 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6307 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6308 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6309 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6311 htab
->tls_get_addr_fd
= h
;
6314 return _bfd_elf_tls_setup (obfd
, info
);
6317 /* Run through all the TLS relocs looking for optimization
6318 opportunities. The linker has been hacked (see ppc64elf.em) to do
6319 a preliminary section layout so that we know the TLS segment
6320 offsets. We can't optimize earlier because some optimizations need
6321 to know the tp offset, and we need to optimize before allocating
6322 dynamic relocations. */
6325 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6329 struct ppc_link_hash_table
*htab
;
6331 if (info
->relocatable
|| info
->shared
)
6334 htab
= ppc_hash_table (info
);
6335 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6337 Elf_Internal_Sym
*locsyms
= NULL
;
6339 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6340 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6342 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6343 int expecting_tls_get_addr
;
6345 /* Read the relocations. */
6346 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6348 if (relstart
== NULL
)
6351 expecting_tls_get_addr
= 0;
6352 relend
= relstart
+ sec
->reloc_count
;
6353 for (rel
= relstart
; rel
< relend
; rel
++)
6355 enum elf_ppc64_reloc_type r_type
;
6356 unsigned long r_symndx
;
6357 struct elf_link_hash_entry
*h
;
6358 Elf_Internal_Sym
*sym
;
6361 char tls_set
, tls_clear
, tls_type
= 0;
6363 bfd_boolean ok_tprel
, is_local
;
6365 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6366 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6370 if (elf_section_data (sec
)->relocs
!= relstart
)
6373 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6374 != (unsigned char *) locsyms
))
6381 if (h
->root
.type
!= bfd_link_hash_defined
6382 && h
->root
.type
!= bfd_link_hash_defweak
)
6384 value
= h
->root
.u
.def
.value
;
6387 /* Symbols referenced by TLS relocs must be of type
6388 STT_TLS. So no need for .opd local sym adjust. */
6389 value
= sym
->st_value
;
6394 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
6397 value
+= sym_sec
->output_offset
;
6398 value
+= sym_sec
->output_section
->vma
;
6399 value
-= htab
->elf
.tls_sec
->vma
;
6400 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6401 < (bfd_vma
) 1 << 32);
6404 r_type
= ELF64_R_TYPE (rel
->r_info
);
6407 case R_PPC64_GOT_TLSLD16
:
6408 case R_PPC64_GOT_TLSLD16_LO
:
6409 case R_PPC64_GOT_TLSLD16_HI
:
6410 case R_PPC64_GOT_TLSLD16_HA
:
6411 /* These relocs should never be against a symbol
6412 defined in a shared lib. Leave them alone if
6413 that turns out to be the case. */
6414 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6421 tls_type
= TLS_TLS
| TLS_LD
;
6422 expecting_tls_get_addr
= 1;
6425 case R_PPC64_GOT_TLSGD16
:
6426 case R_PPC64_GOT_TLSGD16_LO
:
6427 case R_PPC64_GOT_TLSGD16_HI
:
6428 case R_PPC64_GOT_TLSGD16_HA
:
6434 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6436 tls_type
= TLS_TLS
| TLS_GD
;
6437 expecting_tls_get_addr
= 1;
6440 case R_PPC64_GOT_TPREL16_DS
:
6441 case R_PPC64_GOT_TPREL16_LO_DS
:
6442 case R_PPC64_GOT_TPREL16_HI
:
6443 case R_PPC64_GOT_TPREL16_HA
:
6444 expecting_tls_get_addr
= 0;
6449 tls_clear
= TLS_TPREL
;
6450 tls_type
= TLS_TLS
| TLS_TPREL
;
6457 case R_PPC64_REL14_BRTAKEN
:
6458 case R_PPC64_REL14_BRNTAKEN
:
6461 && (h
== &htab
->tls_get_addr
->elf
6462 || h
== &htab
->tls_get_addr_fd
->elf
))
6464 if (!expecting_tls_get_addr
6466 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6468 || (ELF64_R_TYPE (rel
[-1].r_info
)
6469 == R_PPC64_TOC16_LO
)))
6471 /* Check for toc tls entries. */
6475 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6479 if (toc_tls
!= NULL
)
6480 expecting_tls_get_addr
= retval
> 1;
6483 if (expecting_tls_get_addr
)
6485 struct plt_entry
*ent
;
6486 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6487 if (ent
->addend
== 0)
6489 if (ent
->plt
.refcount
> 0)
6490 ent
->plt
.refcount
-= 1;
6495 expecting_tls_get_addr
= 0;
6498 case R_PPC64_TPREL64
:
6499 expecting_tls_get_addr
= 0;
6503 tls_set
= TLS_EXPLICIT
;
6504 tls_clear
= TLS_TPREL
;
6510 case R_PPC64_DTPMOD64
:
6511 expecting_tls_get_addr
= 0;
6512 if (rel
+ 1 < relend
6514 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6515 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6519 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6522 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6531 tls_set
= TLS_EXPLICIT
;
6537 expecting_tls_get_addr
= 0;
6541 if ((tls_set
& TLS_EXPLICIT
) == 0)
6543 struct got_entry
*ent
;
6545 /* Adjust got entry for this reloc. */
6549 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6551 for (; ent
!= NULL
; ent
= ent
->next
)
6552 if (ent
->addend
== rel
->r_addend
6553 && ent
->owner
== ibfd
6554 && ent
->tls_type
== tls_type
)
6561 /* We managed to get rid of a got entry. */
6562 if (ent
->got
.refcount
> 0)
6563 ent
->got
.refcount
-= 1;
6568 struct ppc_link_hash_entry
* eh
;
6569 struct ppc_dyn_relocs
**pp
;
6570 struct ppc_dyn_relocs
*p
;
6572 /* Adjust dynamic relocs. */
6573 eh
= (struct ppc_link_hash_entry
*) h
;
6574 for (pp
= &eh
->dyn_relocs
;
6579 /* If we got rid of a DTPMOD/DTPREL reloc
6580 pair then we'll lose one or two dyn
6582 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6591 *tls_mask
|= tls_set
;
6592 *tls_mask
&= ~tls_clear
;
6595 if (elf_section_data (sec
)->relocs
!= relstart
)
6600 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6601 != (unsigned char *) locsyms
))
6603 if (!info
->keep_memory
)
6606 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6612 /* Allocate space in .plt, .got and associated reloc sections for
6616 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
6618 struct bfd_link_info
*info
;
6619 struct ppc_link_hash_table
*htab
;
6621 struct ppc_link_hash_entry
*eh
;
6622 struct ppc_dyn_relocs
*p
;
6623 struct got_entry
*gent
;
6625 if (h
->root
.type
== bfd_link_hash_indirect
)
6628 if (h
->root
.type
== bfd_link_hash_warning
)
6629 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6631 info
= (struct bfd_link_info
*) inf
;
6632 htab
= ppc_hash_table (info
);
6634 if (htab
->elf
.dynamic_sections_created
6636 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
6638 struct plt_entry
*pent
;
6639 bfd_boolean doneone
= FALSE
;
6640 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
6641 if (pent
->plt
.refcount
> 0)
6643 /* If this is the first .plt entry, make room for the special
6647 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
6649 pent
->plt
.offset
= s
->size
;
6651 /* Make room for this entry. */
6652 s
->size
+= PLT_ENTRY_SIZE
;
6654 /* Make room for the .glink code. */
6657 s
->size
+= GLINK_CALL_STUB_SIZE
;
6658 /* We need bigger stubs past index 32767. */
6659 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
6663 /* We also need to make an entry in the .rela.plt section. */
6665 s
->size
+= sizeof (Elf64_External_Rela
);
6669 pent
->plt
.offset
= (bfd_vma
) -1;
6672 h
->plt
.plist
= NULL
;
6673 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
6678 h
->plt
.plist
= NULL
;
6679 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
6682 eh
= (struct ppc_link_hash_entry
*) h
;
6683 /* Run through the TLS GD got entries first if we're changing them
6685 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
6686 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
6687 if (gent
->got
.refcount
> 0
6688 && (gent
->tls_type
& TLS_GD
) != 0)
6690 /* This was a GD entry that has been converted to TPREL. If
6691 there happens to be a TPREL entry we can use that one. */
6692 struct got_entry
*ent
;
6693 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
6694 if (ent
->got
.refcount
> 0
6695 && (ent
->tls_type
& TLS_TPREL
) != 0
6696 && ent
->addend
== gent
->addend
6697 && ent
->owner
== gent
->owner
)
6699 gent
->got
.refcount
= 0;
6703 /* If not, then we'll be using our own TPREL entry. */
6704 if (gent
->got
.refcount
!= 0)
6705 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
6708 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
6709 if (gent
->got
.refcount
> 0)
6713 /* Make sure this symbol is output as a dynamic symbol.
6714 Undefined weak syms won't yet be marked as dynamic,
6715 nor will all TLS symbols. */
6716 if (h
->dynindx
== -1
6717 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6719 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6723 if ((gent
->tls_type
& TLS_LD
) != 0
6724 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
6726 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
6730 s
= ppc64_elf_tdata (gent
->owner
)->got
;
6731 gent
->got
.offset
= s
->size
;
6733 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
6734 dyn
= htab
->elf
.dynamic_sections_created
;
6736 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
6737 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6738 || h
->root
.type
!= bfd_link_hash_undefweak
))
6739 ppc64_elf_tdata (gent
->owner
)->relgot
->size
6740 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
6741 ? 2 * sizeof (Elf64_External_Rela
)
6742 : sizeof (Elf64_External_Rela
));
6745 gent
->got
.offset
= (bfd_vma
) -1;
6747 if (eh
->dyn_relocs
== NULL
)
6750 /* In the shared -Bsymbolic case, discard space allocated for
6751 dynamic pc-relative relocs against symbols which turn out to be
6752 defined in regular objects. For the normal shared case, discard
6753 space for relocs that have become local due to symbol visibility
6758 /* Relocs that use pc_count are those that appear on a call insn,
6759 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6760 generated via assembly. We want calls to protected symbols to
6761 resolve directly to the function rather than going via the plt.
6762 If people want function pointer comparisons to work as expected
6763 then they should avoid writing weird assembly. */
6764 if (SYMBOL_CALLS_LOCAL (info
, h
))
6766 struct ppc_dyn_relocs
**pp
;
6768 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6770 p
->count
-= p
->pc_count
;
6779 /* Also discard relocs on undefined weak syms with non-default
6781 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6782 && h
->root
.type
== bfd_link_hash_undefweak
)
6783 eh
->dyn_relocs
= NULL
;
6785 else if (ELIMINATE_COPY_RELOCS
)
6787 /* For the non-shared case, discard space for relocs against
6788 symbols which turn out to need copy relocs or are not
6791 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
6792 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
6793 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
6795 /* Make sure this symbol is output as a dynamic symbol.
6796 Undefined weak syms won't yet be marked as dynamic. */
6797 if (h
->dynindx
== -1
6798 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6800 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6804 /* If that succeeded, we know we'll be keeping all the
6806 if (h
->dynindx
!= -1)
6810 eh
->dyn_relocs
= NULL
;
6815 /* Finally, allocate space. */
6816 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6818 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6819 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6825 /* Find any dynamic relocs that apply to read-only sections. */
6828 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
6830 struct ppc_link_hash_entry
*eh
;
6831 struct ppc_dyn_relocs
*p
;
6833 if (h
->root
.type
== bfd_link_hash_warning
)
6834 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6836 eh
= (struct ppc_link_hash_entry
*) h
;
6837 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6839 asection
*s
= p
->sec
->output_section
;
6841 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6843 struct bfd_link_info
*info
= inf
;
6845 info
->flags
|= DF_TEXTREL
;
6847 /* Not an error, just cut short the traversal. */
6854 /* Set the sizes of the dynamic sections. */
6857 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6858 struct bfd_link_info
*info
)
6860 struct ppc_link_hash_table
*htab
;
6866 htab
= ppc_hash_table (info
);
6867 dynobj
= htab
->elf
.dynobj
;
6871 if (htab
->elf
.dynamic_sections_created
)
6873 /* Set the contents of the .interp section to the interpreter. */
6874 if (info
->executable
)
6876 s
= bfd_get_section_by_name (dynobj
, ".interp");
6879 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6880 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6884 /* Set up .got offsets for local syms, and space for local dynamic
6886 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6888 struct got_entry
**lgot_ents
;
6889 struct got_entry
**end_lgot_ents
;
6891 bfd_size_type locsymcount
;
6892 Elf_Internal_Shdr
*symtab_hdr
;
6895 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
6898 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
6900 s
= ppc64_elf_tdata (ibfd
)->got
;
6901 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6905 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6906 srel
->size
+= sizeof (Elf64_External_Rela
);
6910 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
6912 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6914 struct ppc_dyn_relocs
*p
;
6916 for (p
= *((struct ppc_dyn_relocs
**)
6917 &elf_section_data (s
)->local_dynrel
);
6921 if (!bfd_is_abs_section (p
->sec
)
6922 && bfd_is_abs_section (p
->sec
->output_section
))
6924 /* Input section has been discarded, either because
6925 it is a copy of a linkonce section or due to
6926 linker script /DISCARD/, so we'll be discarding
6929 else if (p
->count
!= 0)
6931 srel
= elf_section_data (p
->sec
)->sreloc
;
6932 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6933 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
6934 info
->flags
|= DF_TEXTREL
;
6939 lgot_ents
= elf_local_got_ents (ibfd
);
6943 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6944 locsymcount
= symtab_hdr
->sh_info
;
6945 end_lgot_ents
= lgot_ents
+ locsymcount
;
6946 lgot_masks
= (char *) end_lgot_ents
;
6947 s
= ppc64_elf_tdata (ibfd
)->got
;
6948 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6949 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
6951 struct got_entry
*ent
;
6953 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
6954 if (ent
->got
.refcount
> 0)
6956 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
6958 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
6960 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6963 srel
->size
+= sizeof (Elf64_External_Rela
);
6965 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
6969 ent
->got
.offset
= s
->size
;
6970 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
6974 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
6980 srel
->size
+= sizeof (Elf64_External_Rela
);
6985 ent
->got
.offset
= (bfd_vma
) -1;
6989 /* Allocate global sym .plt and .got entries, and space for global
6990 sym dynamic relocs. */
6991 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
6993 /* We now have determined the sizes of the various dynamic sections.
6994 Allocate memory for them. */
6996 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6998 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7001 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7002 /* These haven't been allocated yet; don't strip. */
7004 else if (s
== htab
->got
7006 || s
== htab
->glink
)
7008 /* Strip this section if we don't need it; see the
7011 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7015 /* If we don't need this section, strip it from the
7016 output file. This is mostly to handle .rela.bss and
7017 .rela.plt. We must create both sections in
7018 create_dynamic_sections, because they must be created
7019 before the linker maps input sections to output
7020 sections. The linker does that before
7021 adjust_dynamic_symbol is called, and it is that
7022 function which decides whether anything needs to go
7023 into these sections. */
7027 if (s
!= htab
->relplt
)
7030 /* We use the reloc_count field as a counter if we need
7031 to copy relocs into the output file. */
7037 /* It's not one of our sections, so don't allocate space. */
7043 _bfd_strip_section_from_output (info
, s
);
7047 /* .plt is in the bss section. We don't initialise it. */
7051 /* Allocate memory for the section contents. We use bfd_zalloc
7052 here in case unused entries are not reclaimed before the
7053 section's contents are written out. This should not happen,
7054 but this way if it does we get a R_PPC64_NONE reloc in .rela
7055 sections instead of garbage.
7056 We also rely on the section contents being zero when writing
7058 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7059 if (s
->contents
== NULL
)
7063 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7065 s
= ppc64_elf_tdata (ibfd
)->got
;
7066 if (s
!= NULL
&& s
!= htab
->got
)
7069 _bfd_strip_section_from_output (info
, s
);
7072 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7073 if (s
->contents
== NULL
)
7077 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7081 _bfd_strip_section_from_output (info
, s
);
7084 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7085 if (s
->contents
== NULL
)
7093 if (htab
->elf
.dynamic_sections_created
)
7095 /* Add some entries to the .dynamic section. We fill in the
7096 values later, in ppc64_elf_finish_dynamic_sections, but we
7097 must add the entries now so that we get the correct size for
7098 the .dynamic section. The DT_DEBUG entry is filled in by the
7099 dynamic linker and used by the debugger. */
7100 #define add_dynamic_entry(TAG, VAL) \
7101 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7103 if (info
->executable
)
7105 if (!add_dynamic_entry (DT_DEBUG
, 0))
7109 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7111 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7112 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7113 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7114 || !add_dynamic_entry (DT_JMPREL
, 0)
7115 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7121 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7122 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7128 if (!add_dynamic_entry (DT_RELA
, 0)
7129 || !add_dynamic_entry (DT_RELASZ
, 0)
7130 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7133 /* If any dynamic relocs apply to a read-only section,
7134 then we need a DT_TEXTREL entry. */
7135 if ((info
->flags
& DF_TEXTREL
) == 0)
7136 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7138 if ((info
->flags
& DF_TEXTREL
) != 0)
7140 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7145 #undef add_dynamic_entry
7150 /* Determine the type of stub needed, if any, for a call. */
7152 static inline enum ppc_stub_type
7153 ppc_type_of_stub (asection
*input_sec
,
7154 const Elf_Internal_Rela
*rel
,
7155 struct ppc_link_hash_entry
**hash
,
7156 bfd_vma destination
)
7158 struct ppc_link_hash_entry
*h
= *hash
;
7160 bfd_vma branch_offset
;
7161 bfd_vma max_branch_offset
;
7162 enum elf_ppc64_reloc_type r_type
;
7167 && h
->oh
->is_func_descriptor
)
7170 if (h
->elf
.dynindx
!= -1)
7172 struct plt_entry
*ent
;
7174 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7175 if (ent
->addend
== rel
->r_addend
7176 && ent
->plt
.offset
!= (bfd_vma
) -1)
7179 return ppc_stub_plt_call
;
7183 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7184 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7185 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7186 return ppc_stub_none
;
7189 /* Determine where the call point is. */
7190 location
= (input_sec
->output_offset
7191 + input_sec
->output_section
->vma
7194 branch_offset
= destination
- location
;
7195 r_type
= ELF64_R_TYPE (rel
->r_info
);
7197 /* Determine if a long branch stub is needed. */
7198 max_branch_offset
= 1 << 25;
7199 if (r_type
!= R_PPC64_REL24
)
7200 max_branch_offset
= 1 << 15;
7202 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7203 /* We need a stub. Figure out whether a long_branch or plt_branch
7205 return ppc_stub_long_branch
;
7207 return ppc_stub_none
;
7210 /* Build a .plt call stub. */
7212 static inline bfd_byte
*
7213 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7215 #define PPC_LO(v) ((v) & 0xffff)
7216 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7217 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7219 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7220 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7221 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7222 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7223 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7225 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7226 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7227 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7229 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7230 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7231 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7236 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7238 struct ppc_stub_hash_entry
*stub_entry
;
7239 struct ppc_branch_hash_entry
*br_entry
;
7240 struct bfd_link_info
*info
;
7241 struct ppc_link_hash_table
*htab
;
7245 struct plt_entry
*ent
;
7249 /* Massage our args to the form they really have. */
7250 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7253 htab
= ppc_hash_table (info
);
7255 /* Make a note of the offset within the stubs for this entry. */
7256 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7257 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7259 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7260 switch (stub_entry
->stub_type
)
7262 case ppc_stub_long_branch
:
7263 case ppc_stub_long_branch_r2off
:
7264 /* Branches are relative. This is where we are going to. */
7265 off
= (stub_entry
->target_value
7266 + stub_entry
->target_section
->output_offset
7267 + stub_entry
->target_section
->output_section
->vma
);
7269 /* And this is where we are coming from. */
7270 off
-= (stub_entry
->stub_offset
7271 + stub_entry
->stub_sec
->output_offset
7272 + stub_entry
->stub_sec
->output_section
->vma
);
7274 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
7280 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7281 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7282 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7284 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7286 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7291 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
7293 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
7296 case ppc_stub_plt_branch
:
7297 case ppc_stub_plt_branch_r2off
:
7298 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7299 stub_entry
->root
.string
+ 9,
7301 if (br_entry
== NULL
)
7303 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
7304 stub_entry
->root
.string
+ 9);
7305 htab
->stub_error
= TRUE
;
7309 off
= (stub_entry
->target_value
7310 + stub_entry
->target_section
->output_offset
7311 + stub_entry
->target_section
->output_section
->vma
);
7313 bfd_put_64 (htab
->brlt
->owner
, off
,
7314 htab
->brlt
->contents
+ br_entry
->offset
);
7318 /* Create a reloc for the branch lookup table entry. */
7319 Elf_Internal_Rela rela
;
7322 rela
.r_offset
= (br_entry
->offset
7323 + htab
->brlt
->output_offset
7324 + htab
->brlt
->output_section
->vma
);
7325 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
7326 rela
.r_addend
= off
;
7328 rl
= htab
->relbrlt
->contents
;
7329 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
7330 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
7333 off
= (br_entry
->offset
7334 + htab
->brlt
->output_offset
7335 + htab
->brlt
->output_section
->vma
7336 - elf_gp (htab
->brlt
->output_section
->owner
)
7337 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7339 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7341 (*_bfd_error_handler
)
7342 (_("linkage table error against `%s'"),
7343 stub_entry
->root
.string
);
7344 bfd_set_error (bfd_error_bad_value
);
7345 htab
->stub_error
= TRUE
;
7350 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
7352 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7354 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7361 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7362 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7363 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7365 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7367 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7369 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7371 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7375 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
7377 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
7380 case ppc_stub_plt_call
:
7381 /* Do the best we can for shared libraries built without
7382 exporting ".foo" for each "foo". This can happen when symbol
7383 versioning scripts strip all bar a subset of symbols. */
7384 if (stub_entry
->h
->oh
!= NULL
7385 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
7386 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7388 /* Point the symbol at the stub. There may be multiple stubs,
7389 we don't really care; The main thing is to make this sym
7390 defined somewhere. Maybe defining the symbol in the stub
7391 section is a silly idea. If we didn't do this, htab->top_id
7393 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
7394 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
7395 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
7398 /* Now build the stub. */
7400 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7401 if (ent
->addend
== stub_entry
->addend
)
7403 off
= ent
->plt
.offset
;
7406 if (off
>= (bfd_vma
) -2)
7409 off
&= ~ (bfd_vma
) 1;
7410 off
+= (htab
->plt
->output_offset
7411 + htab
->plt
->output_section
->vma
7412 - elf_gp (htab
->plt
->output_section
->owner
)
7413 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7415 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7417 (*_bfd_error_handler
)
7418 (_("linkage table error against `%s'"),
7419 stub_entry
->h
->elf
.root
.root
.string
);
7420 bfd_set_error (bfd_error_bad_value
);
7421 htab
->stub_error
= TRUE
;
7425 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
7434 stub_entry
->stub_sec
->size
+= size
;
7436 if (htab
->emit_stub_syms
7437 && !(stub_entry
->stub_type
== ppc_stub_plt_call
7438 && stub_entry
->h
->oh
!= NULL
7439 && stub_entry
->h
->oh
->elf
.root
.type
== bfd_link_hash_defined
7440 && stub_entry
->h
->oh
->elf
.root
.u
.def
.section
== stub_entry
->stub_sec
7441 && stub_entry
->h
->oh
->elf
.root
.u
.def
.value
== stub_entry
->stub_offset
))
7443 struct elf_link_hash_entry
*h
;
7444 h
= elf_link_hash_lookup (&htab
->elf
, stub_entry
->root
.string
,
7445 TRUE
, FALSE
, FALSE
);
7448 if (h
->root
.type
== bfd_link_hash_new
)
7450 h
->root
.type
= bfd_link_hash_defined
;
7451 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
7452 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
7453 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
7454 | ELF_LINK_HASH_DEF_REGULAR
7455 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7456 | ELF_LINK_FORCED_LOCAL
);
7463 /* As above, but don't actually build the stub. Just bump offset so
7464 we know stub section sizes, and select plt_branch stubs where
7465 long_branch stubs won't do. */
7468 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7470 struct ppc_stub_hash_entry
*stub_entry
;
7471 struct bfd_link_info
*info
;
7472 struct ppc_link_hash_table
*htab
;
7476 /* Massage our args to the form they really have. */
7477 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7480 htab
= ppc_hash_table (info
);
7482 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7484 struct plt_entry
*ent
;
7486 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7487 if (ent
->addend
== stub_entry
->addend
)
7489 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
7492 if (off
>= (bfd_vma
) -2)
7494 off
+= (htab
->plt
->output_offset
7495 + htab
->plt
->output_section
->vma
7496 - elf_gp (htab
->plt
->output_section
->owner
)
7497 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7499 size
= PLT_CALL_STUB_SIZE
;
7500 if (PPC_HA (off
+ 16) != PPC_HA (off
))
7505 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
7507 off
= (stub_entry
->target_value
7508 + stub_entry
->target_section
->output_offset
7509 + stub_entry
->target_section
->output_section
->vma
);
7510 off
-= (stub_entry
->stub_sec
->size
7511 + stub_entry
->stub_sec
->output_offset
7512 + stub_entry
->stub_sec
->output_section
->vma
);
7514 /* Reset the stub type from the plt variant in case we now
7515 can reach with a shorter stub. */
7516 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
7517 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
7520 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
7526 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
7527 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
7529 struct ppc_branch_hash_entry
*br_entry
;
7531 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7532 stub_entry
->root
.string
+ 9,
7534 if (br_entry
== NULL
)
7536 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
7537 stub_entry
->root
.string
+ 9);
7538 htab
->stub_error
= TRUE
;
7542 if (br_entry
->iter
!= htab
->stub_iteration
)
7544 br_entry
->iter
= htab
->stub_iteration
;
7545 br_entry
->offset
= htab
->brlt
->size
;
7546 htab
->brlt
->size
+= 8;
7549 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
7552 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
7554 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
7559 stub_entry
->stub_sec
->size
+= size
;
7563 /* Set up various things so that we can make a list of input sections
7564 for each output section included in the link. Returns -1 on error,
7565 0 when no stubs will be needed, and 1 on success. */
7568 ppc64_elf_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
7571 int top_id
, top_index
, id
;
7573 asection
**input_list
;
7575 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7577 if (htab
->brlt
== NULL
)
7580 /* Find the top input section id. */
7581 for (input_bfd
= info
->input_bfds
, top_id
= 3;
7583 input_bfd
= input_bfd
->link_next
)
7585 for (section
= input_bfd
->sections
;
7587 section
= section
->next
)
7589 if (top_id
< section
->id
)
7590 top_id
= section
->id
;
7594 htab
->top_id
= top_id
;
7595 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
7596 htab
->stub_group
= bfd_zmalloc (amt
);
7597 if (htab
->stub_group
== NULL
)
7600 /* Set toc_off for com, und, abs and ind sections. */
7601 for (id
= 0; id
< 3; id
++)
7602 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
7604 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
7606 /* We can't use output_bfd->section_count here to find the top output
7607 section index as some sections may have been removed, and
7608 _bfd_strip_section_from_output doesn't renumber the indices. */
7609 for (section
= output_bfd
->sections
, top_index
= 0;
7611 section
= section
->next
)
7613 if (top_index
< section
->index
)
7614 top_index
= section
->index
;
7617 htab
->top_index
= top_index
;
7618 amt
= sizeof (asection
*) * (top_index
+ 1);
7619 input_list
= bfd_zmalloc (amt
);
7620 htab
->input_list
= input_list
;
7621 if (input_list
== NULL
)
7627 /* The linker repeatedly calls this function for each TOC input section
7628 and linker generated GOT section. Group input bfds such that the toc
7629 within a group is less than 64k in size. Will break with cute linker
7630 scripts that play games with dot in the output toc section. */
7633 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
7635 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7636 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
7637 bfd_vma off
= addr
- htab
->toc_curr
;
7639 if (off
+ isec
->size
> 0x10000)
7640 htab
->toc_curr
= addr
;
7642 elf_gp (isec
->owner
) = (htab
->toc_curr
7643 - elf_gp (isec
->output_section
->owner
)
7647 /* Called after the last call to the above function. */
7650 ppc64_elf_reinit_toc (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7651 struct bfd_link_info
*info
)
7653 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7655 /* toc_curr tracks the TOC offset used for code sections below in
7656 ppc64_elf_next_input_section. Start off at 0x8000. */
7657 htab
->toc_curr
= TOC_BASE_OFF
;
7660 /* No toc references were found in ISEC. If the code in ISEC makes no
7661 calls, then there's no need to use toc adjusting stubs when branching
7662 into ISEC. Actually, indirect calls from ISEC are OK as they will
7666 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
7673 /* We know none of our code bearing sections will need toc stubs. */
7674 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
7677 if (isec
->size
== 0)
7680 /* Hack for linux kernel. .fixup contains branches, but only back to
7681 the function that hit an exception. */
7682 branch_ok
= strcmp (isec
->name
, ".fixup") == 0;
7684 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7685 if (contents
== NULL
)
7687 if (!bfd_malloc_and_get_section (isec
->owner
, isec
, &contents
))
7689 if (contents
!= NULL
)
7693 if (info
->keep_memory
)
7694 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7697 /* Code scan, because we don't necessarily have relocs on calls to
7698 static functions. */
7700 for (i
= 0; i
< isec
->size
; i
+= 4)
7702 unsigned long insn
= bfd_get_32 (isec
->owner
, contents
+ i
);
7703 /* Is this a branch? */
7704 if ((insn
& (0x3f << 26)) == (18 << 26)
7705 /* If branch and link, it's a function call. */
7707 /* Sibling calls use a plain branch. I don't know a way
7708 of deciding whether a branch is really a sibling call. */
7716 if (elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7721 /* The linker repeatedly calls this function for each input section,
7722 in the order that input sections are linked into output sections.
7723 Build lists of input sections to determine groupings between which
7724 we may insert linker stubs. */
7727 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
7729 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7732 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
7733 && isec
->output_section
->index
<= htab
->top_index
)
7735 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
7736 /* Steal the link_sec pointer for our list. */
7737 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7738 /* This happens to make the list in reverse order,
7739 which is what we want. */
7740 PREV_SEC (isec
) = *list
;
7744 /* If a code section has a function that uses the TOC then we need
7745 to use the right TOC (obviously). Also, make sure that .opd gets
7746 the correct TOC value for R_PPC64_TOC relocs that don't have or
7747 can't find their function symbol (shouldn't ever happen now). */
7748 if (isec
->has_gp_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
7750 if (elf_gp (isec
->owner
) != 0)
7751 htab
->toc_curr
= elf_gp (isec
->owner
);
7753 else if ((ret
= toc_adjusting_stub_needed (info
, isec
)) < 0)
7756 isec
->has_gp_reloc
= ret
;
7758 /* Functions that don't use the TOC can belong in any TOC group.
7759 Use the last TOC base. This happens to make _init and _fini
7761 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
7765 /* See whether we can group stub sections together. Grouping stub
7766 sections may result in fewer stubs. More importantly, we need to
7767 put all .init* and .fini* stubs at the beginning of the .init or
7768 .fini output sections respectively, because glibc splits the
7769 _init and _fini functions into multiple parts. Putting a stub in
7770 the middle of a function is not a good idea. */
7773 group_sections (struct ppc_link_hash_table
*htab
,
7774 bfd_size_type stub_group_size
,
7775 bfd_boolean stubs_always_before_branch
)
7777 asection
**list
= htab
->input_list
+ htab
->top_index
;
7780 asection
*tail
= *list
;
7781 while (tail
!= NULL
)
7785 bfd_size_type total
;
7786 bfd_boolean big_sec
;
7791 big_sec
= total
>= stub_group_size
;
7792 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
7794 while ((prev
= PREV_SEC (curr
)) != NULL
7795 && ((total
+= curr
->output_offset
- prev
->output_offset
)
7797 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7800 /* OK, the size from the start of CURR to the end is less
7801 than stub_group_size and thus can be handled by one stub
7802 section. (or the tail section is itself larger than
7803 stub_group_size, in which case we may be toast.) We
7804 should really be keeping track of the total size of stubs
7805 added here, as stubs contribute to the final output
7806 section size. That's a little tricky, and this way will
7807 only break if stubs added make the total size more than
7808 2^25, ie. for the default stub_group_size, if stubs total
7809 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7812 prev
= PREV_SEC (tail
);
7813 /* Set up this stub group. */
7814 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7816 while (tail
!= curr
&& (tail
= prev
) != NULL
);
7818 /* But wait, there's more! Input sections up to stub_group_size
7819 bytes before the stub section can be handled by it too.
7820 Don't do this if we have a really large section after the
7821 stubs, as adding more stubs increases the chance that
7822 branches may not reach into the stub section. */
7823 if (!stubs_always_before_branch
&& !big_sec
)
7827 && ((total
+= tail
->output_offset
- prev
->output_offset
)
7829 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7832 prev
= PREV_SEC (tail
);
7833 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7839 while (list
-- != htab
->input_list
);
7840 free (htab
->input_list
);
7844 /* Determine and set the size of the stub section for a final link.
7846 The basic idea here is to examine all the relocations looking for
7847 PC-relative calls to a target that is unreachable with a "bl"
7851 ppc64_elf_size_stubs (bfd
*output_bfd
,
7852 struct bfd_link_info
*info
,
7853 bfd_signed_vma group_size
,
7854 asection
*(*add_stub_section
) (const char *, asection
*),
7855 void (*layout_sections_again
) (void))
7857 bfd_size_type stub_group_size
;
7858 bfd_boolean stubs_always_before_branch
;
7859 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7861 /* Stash our params away. */
7862 htab
->add_stub_section
= add_stub_section
;
7863 htab
->layout_sections_again
= layout_sections_again
;
7864 stubs_always_before_branch
= group_size
< 0;
7866 stub_group_size
= -group_size
;
7868 stub_group_size
= group_size
;
7869 if (stub_group_size
== 1)
7871 /* Default values. */
7872 if (stubs_always_before_branch
)
7874 stub_group_size
= 0x1e00000;
7875 if (htab
->has_14bit_branch
)
7876 stub_group_size
= 0x7800;
7880 stub_group_size
= 0x1c00000;
7881 if (htab
->has_14bit_branch
)
7882 stub_group_size
= 0x7000;
7886 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
7891 unsigned int bfd_indx
;
7893 bfd_boolean stub_changed
;
7895 htab
->stub_iteration
+= 1;
7896 stub_changed
= FALSE
;
7898 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
7900 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
7902 Elf_Internal_Shdr
*symtab_hdr
;
7904 Elf_Internal_Sym
*local_syms
= NULL
;
7906 /* We'll need the symbol table in a second. */
7907 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
7908 if (symtab_hdr
->sh_info
== 0)
7911 /* Walk over each section attached to the input bfd. */
7912 for (section
= input_bfd
->sections
;
7914 section
= section
->next
)
7916 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
7918 /* If there aren't any relocs, then there's nothing more
7920 if ((section
->flags
& SEC_RELOC
) == 0
7921 || section
->reloc_count
== 0)
7924 /* If this section is a link-once section that will be
7925 discarded, then don't create any stubs. */
7926 if (section
->output_section
== NULL
7927 || section
->output_section
->owner
!= output_bfd
)
7930 /* Get the relocs. */
7932 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
7934 if (internal_relocs
== NULL
)
7935 goto error_ret_free_local
;
7937 /* Now examine each relocation. */
7938 irela
= internal_relocs
;
7939 irelaend
= irela
+ section
->reloc_count
;
7940 for (; irela
< irelaend
; irela
++)
7942 enum elf_ppc64_reloc_type r_type
;
7943 unsigned int r_indx
;
7944 enum ppc_stub_type stub_type
;
7945 struct ppc_stub_hash_entry
*stub_entry
;
7946 asection
*sym_sec
, *code_sec
;
7948 bfd_vma destination
;
7949 bfd_boolean ok_dest
;
7950 struct ppc_link_hash_entry
*hash
;
7951 struct ppc_link_hash_entry
*fdh
;
7952 struct elf_link_hash_entry
*h
;
7953 Elf_Internal_Sym
*sym
;
7955 const asection
*id_sec
;
7958 r_type
= ELF64_R_TYPE (irela
->r_info
);
7959 r_indx
= ELF64_R_SYM (irela
->r_info
);
7961 if (r_type
>= R_PPC64_max
)
7963 bfd_set_error (bfd_error_bad_value
);
7964 goto error_ret_free_internal
;
7967 /* Only look for stubs on branch instructions. */
7968 if (r_type
!= R_PPC64_REL24
7969 && r_type
!= R_PPC64_REL14
7970 && r_type
!= R_PPC64_REL14_BRTAKEN
7971 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
7974 /* Now determine the call target, its name, value,
7976 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7978 goto error_ret_free_internal
;
7979 hash
= (struct ppc_link_hash_entry
*) h
;
7985 sym_value
= sym
->st_value
;
7991 /* Recognise an old ABI func code entry sym, and
7992 use the func descriptor sym instead. */
7993 if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
7994 && hash
->elf
.root
.root
.string
[0] == '.'
7995 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
7997 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
7998 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8000 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8001 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8002 if (sym_sec
->output_section
!= NULL
)
8008 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8009 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8011 sym_value
= hash
->elf
.root
.u
.def
.value
;
8012 if (sym_sec
->output_section
!= NULL
)
8015 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8017 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8021 bfd_set_error (bfd_error_bad_value
);
8022 goto error_ret_free_internal
;
8029 sym_value
+= irela
->r_addend
;
8030 destination
= (sym_value
8031 + sym_sec
->output_offset
8032 + sym_sec
->output_section
->vma
);
8036 opd_adjust
= get_opd_info (sym_sec
);
8037 if (opd_adjust
!= NULL
)
8043 long adjust
= opd_adjust
[sym_value
/ 8];
8046 sym_value
+= adjust
;
8048 dest
= opd_entry_value (sym_sec
, sym_value
,
8049 &code_sec
, &sym_value
);
8050 if (dest
!= (bfd_vma
) -1)
8055 /* Fixup old ABI sym to point at code
8057 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
8058 hash
->elf
.root
.u
.def
.section
= code_sec
;
8059 hash
->elf
.root
.u
.def
.value
= sym_value
;
8064 /* Determine what (if any) linker stub is needed. */
8065 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
8068 if (stub_type
!= ppc_stub_plt_call
)
8070 /* Check whether we need a TOC adjusting stub.
8071 Since the linker pastes together pieces from
8072 different object files when creating the
8073 _init and _fini functions, it may be that a
8074 call to what looks like a local sym is in
8075 fact a call needing a TOC adjustment. */
8076 if (code_sec
!= NULL
8077 && code_sec
->output_section
!= NULL
8078 && (htab
->stub_group
[code_sec
->id
].toc_off
8079 != htab
->stub_group
[section
->id
].toc_off
)
8080 && code_sec
->has_gp_reloc
8081 && section
->has_gp_reloc
)
8082 stub_type
= ppc_stub_long_branch_r2off
;
8085 if (stub_type
== ppc_stub_none
)
8088 /* __tls_get_addr calls might be eliminated. */
8089 if (stub_type
!= ppc_stub_plt_call
8091 && (hash
== htab
->tls_get_addr
8092 || hash
== htab
->tls_get_addr_fd
)
8093 && section
->has_tls_reloc
8094 && irela
!= internal_relocs
)
8099 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
8100 irela
- 1, input_bfd
))
8101 goto error_ret_free_internal
;
8106 /* Support for grouping stub sections. */
8107 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
8109 /* Get the name of this stub. */
8110 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
8112 goto error_ret_free_internal
;
8114 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
8115 stub_name
, FALSE
, FALSE
);
8116 if (stub_entry
!= NULL
)
8118 /* The proper stub has already been created. */
8123 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
8124 if (stub_entry
== NULL
)
8127 error_ret_free_internal
:
8128 if (elf_section_data (section
)->relocs
== NULL
)
8129 free (internal_relocs
);
8130 error_ret_free_local
:
8131 if (local_syms
!= NULL
8132 && (symtab_hdr
->contents
8133 != (unsigned char *) local_syms
))
8138 stub_entry
->stub_type
= stub_type
;
8139 stub_entry
->target_value
= sym_value
;
8140 stub_entry
->target_section
= code_sec
;
8141 stub_entry
->h
= hash
;
8142 stub_entry
->addend
= irela
->r_addend
;
8143 stub_changed
= TRUE
;
8146 /* We're done with the internal relocs, free them. */
8147 if (elf_section_data (section
)->relocs
!= internal_relocs
)
8148 free (internal_relocs
);
8151 if (local_syms
!= NULL
8152 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8154 if (!info
->keep_memory
)
8157 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8164 /* OK, we've added some stubs. Find out the new size of the
8166 for (stub_sec
= htab
->stub_bfd
->sections
;
8168 stub_sec
= stub_sec
->next
)
8169 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8172 htab
->brlt
->size
= 0;
8174 htab
->relbrlt
->size
= 0;
8176 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
8178 /* Ask the linker to do its stuff. */
8179 (*htab
->layout_sections_again
) ();
8182 /* It would be nice to strip .branch_lt from the output if the
8183 section is empty, but it's too late. If we strip sections here,
8184 the dynamic symbol table is corrupted since the section symbol
8185 for the stripped section isn't written. */
8190 /* Called after we have determined section placement. If sections
8191 move, we'll be called again. Provide a value for TOCstart. */
8194 ppc64_elf_toc (bfd
*obfd
)
8199 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8200 order. The TOC starts where the first of these sections starts. */
8201 s
= bfd_get_section_by_name (obfd
, ".got");
8203 s
= bfd_get_section_by_name (obfd
, ".toc");
8205 s
= bfd_get_section_by_name (obfd
, ".tocbss");
8207 s
= bfd_get_section_by_name (obfd
, ".plt");
8210 /* This may happen for
8211 o references to TOC base (SYM@toc / TOC[tc0]) without a
8214 o --gc-sections and empty TOC sections
8216 FIXME: Warn user? */
8218 /* Look for a likely section. We probably won't even be
8220 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8221 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
8222 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8225 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8226 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
8227 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8230 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8231 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
8234 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8235 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
8241 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
8246 /* Build all the stubs associated with the current output file.
8247 The stubs are kept in a hash table attached to the main linker
8248 hash table. This function is called via gldelf64ppc_finish. */
8251 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
8252 struct bfd_link_info
*info
,
8255 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8258 int stub_sec_count
= 0;
8260 htab
->emit_stub_syms
= emit_stub_syms
;
8262 /* Allocate memory to hold the linker stubs. */
8263 for (stub_sec
= htab
->stub_bfd
->sections
;
8265 stub_sec
= stub_sec
->next
)
8266 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
8267 && stub_sec
->size
!= 0)
8269 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
8270 if (stub_sec
->contents
== NULL
)
8272 /* We want to check that built size is the same as calculated
8273 size. rawsize is a convenient location to use. */
8274 stub_sec
->rawsize
= stub_sec
->size
;
8278 if (htab
->plt
!= NULL
)
8283 /* Build the .glink plt call stub. */
8284 plt0
= (htab
->plt
->output_section
->vma
8285 + htab
->plt
->output_offset
8286 - (htab
->glink
->output_section
->vma
8287 + htab
->glink
->output_offset
8288 + GLINK_CALL_STUB_SIZE
));
8289 if (plt0
+ 0x80008000 > 0xffffffff)
8291 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
8292 bfd_set_error (bfd_error_bad_value
);
8296 if (htab
->emit_stub_syms
)
8298 struct elf_link_hash_entry
*h
;
8299 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
8302 if (h
->root
.type
== bfd_link_hash_new
)
8304 h
->root
.type
= bfd_link_hash_defined
;
8305 h
->root
.u
.def
.section
= htab
->glink
;
8306 h
->root
.u
.def
.value
= 0;
8307 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
8308 | ELF_LINK_HASH_DEF_REGULAR
8309 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
8310 | ELF_LINK_FORCED_LOCAL
);
8313 p
= htab
->glink
->contents
;
8314 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
8316 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
8318 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
8320 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
8322 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
8324 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
8326 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
8328 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
8330 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
8332 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
8334 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
8336 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
8338 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
8340 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
8342 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
8344 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
8347 /* Build the .glink lazy link call stubs. */
8349 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
8353 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
8358 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
8360 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
8363 bfd_put_32 (htab
->glink
->owner
,
8364 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
8368 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
8371 if (htab
->brlt
->size
!= 0)
8373 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
8375 if (htab
->brlt
->contents
== NULL
)
8378 if (info
->shared
&& htab
->relbrlt
->size
!= 0)
8380 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
8381 htab
->relbrlt
->size
);
8382 if (htab
->relbrlt
->contents
== NULL
)
8386 /* Build the stubs as directed by the stub hash table. */
8387 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
8389 for (stub_sec
= htab
->stub_bfd
->sections
;
8391 stub_sec
= stub_sec
->next
)
8392 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8394 stub_sec_count
+= 1;
8395 if (stub_sec
->rawsize
!= stub_sec
->size
)
8399 if (stub_sec
!= NULL
8400 || htab
->glink
->rawsize
!= htab
->glink
->size
)
8402 htab
->stub_error
= TRUE
;
8403 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
8406 if (htab
->stub_error
)
8411 *stats
= bfd_malloc (500);
8415 sprintf (*stats
, _("linker stubs in %u groups\n"
8418 " long branch %lu\n"
8419 " long toc adj %lu\n"
8422 htab
->stub_count
[ppc_stub_long_branch
- 1],
8423 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
8424 htab
->stub_count
[ppc_stub_plt_branch
- 1],
8425 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
8426 htab
->stub_count
[ppc_stub_plt_call
- 1]);
8431 /* This function undoes the changes made by add_symbol_adjust. */
8434 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
8436 struct ppc_link_hash_entry
*eh
;
8438 if (h
->root
.type
== bfd_link_hash_indirect
)
8441 if (h
->root
.type
== bfd_link_hash_warning
)
8442 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8444 eh
= (struct ppc_link_hash_entry
*) h
;
8445 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
8448 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
8453 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
8455 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8456 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
8459 /* The RELOCATE_SECTION function is called by the ELF backend linker
8460 to handle the relocations for a section.
8462 The relocs are always passed as Rela structures; if the section
8463 actually uses Rel structures, the r_addend field will always be
8466 This function is responsible for adjust the section contents as
8467 necessary, and (if using Rela relocs and generating a
8468 relocatable output file) adjusting the reloc addend as
8471 This function does not have to worry about setting the reloc
8472 address or the reloc symbol index.
8474 LOCAL_SYMS is a pointer to the swapped in local symbols.
8476 LOCAL_SECTIONS is an array giving the section in the input file
8477 corresponding to the st_shndx field of each local symbol.
8479 The global hash table entry for the global symbols can be found
8480 via elf_sym_hashes (input_bfd).
8482 When generating relocatable output, this function must handle
8483 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
8484 going to be the section symbol corresponding to the output
8485 section, which means that the addend must be adjusted
8489 ppc64_elf_relocate_section (bfd
*output_bfd
,
8490 struct bfd_link_info
*info
,
8492 asection
*input_section
,
8494 Elf_Internal_Rela
*relocs
,
8495 Elf_Internal_Sym
*local_syms
,
8496 asection
**local_sections
)
8498 struct ppc_link_hash_table
*htab
;
8499 Elf_Internal_Shdr
*symtab_hdr
;
8500 struct elf_link_hash_entry
**sym_hashes
;
8501 Elf_Internal_Rela
*rel
;
8502 Elf_Internal_Rela
*relend
;
8503 Elf_Internal_Rela outrel
;
8505 struct got_entry
**local_got_ents
;
8507 bfd_boolean ret
= TRUE
;
8509 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
8510 bfd_boolean is_power4
= FALSE
;
8512 if (info
->relocatable
)
8515 /* Initialize howto table if needed. */
8516 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
8519 htab
= ppc_hash_table (info
);
8520 local_got_ents
= elf_local_got_ents (input_bfd
);
8521 TOCstart
= elf_gp (output_bfd
);
8522 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8523 sym_hashes
= elf_sym_hashes (input_bfd
);
8524 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
8527 relend
= relocs
+ input_section
->reloc_count
;
8528 for (; rel
< relend
; rel
++)
8530 enum elf_ppc64_reloc_type r_type
;
8532 bfd_reloc_status_type r
;
8533 Elf_Internal_Sym
*sym
;
8535 struct elf_link_hash_entry
*h_elf
;
8536 struct ppc_link_hash_entry
*h
;
8537 struct ppc_link_hash_entry
*fdh
;
8538 const char *sym_name
;
8539 unsigned long r_symndx
, toc_symndx
;
8540 char tls_mask
, tls_gd
, tls_type
;
8543 bfd_boolean unresolved_reloc
;
8545 unsigned long insn
, mask
;
8546 struct ppc_stub_hash_entry
*stub_entry
;
8547 bfd_vma max_br_offset
;
8550 r_type
= ELF64_R_TYPE (rel
->r_info
);
8551 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8553 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
8554 symbol of the previous ADDR64 reloc. The symbol gives us the
8555 proper TOC base to use. */
8556 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
8558 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
8560 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
8566 unresolved_reloc
= FALSE
;
8569 if (r_symndx
< symtab_hdr
->sh_info
)
8571 /* It's a local symbol. */
8574 sym
= local_syms
+ r_symndx
;
8575 sec
= local_sections
[r_symndx
];
8576 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
8577 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
8578 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
8579 opd_adjust
= get_opd_info (sec
);
8580 if (opd_adjust
!= NULL
)
8582 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
8586 relocation
+= adjust
;
8591 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
8592 r_symndx
, symtab_hdr
, sym_hashes
,
8593 h_elf
, sec
, relocation
,
8594 unresolved_reloc
, warned
);
8595 sym_name
= h_elf
->root
.root
.string
;
8596 sym_type
= h_elf
->type
;
8598 h
= (struct ppc_link_hash_entry
*) h_elf
;
8600 /* TLS optimizations. Replace instruction sequences and relocs
8601 based on information we collected in tls_optimize. We edit
8602 RELOCS so that --emit-relocs will output something sensible
8603 for the final instruction stream. */
8607 if (IS_PPC64_TLS_RELOC (r_type
))
8610 tls_mask
= h
->tls_mask
;
8611 else if (local_got_ents
!= NULL
)
8614 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
8615 tls_mask
= lgot_masks
[r_symndx
];
8617 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
8619 /* Check for toc tls entries. */
8622 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
8627 tls_mask
= *toc_tls
;
8631 /* Check that tls relocs are used with tls syms, and non-tls
8632 relocs are used with non-tls syms. */
8634 && r_type
!= R_PPC64_NONE
8636 || h
->elf
.root
.type
== bfd_link_hash_defined
8637 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8638 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
8640 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
8641 /* R_PPC64_TLS is OK against a symbol in the TOC. */
8644 (*_bfd_error_handler
)
8645 (sym_type
== STT_TLS
8646 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8647 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
8650 (long) rel
->r_offset
,
8651 ppc64_elf_howto_table
[r_type
]->name
,
8655 /* Ensure reloc mapping code below stays sane. */
8656 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
8657 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
8658 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
8659 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
8660 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
8661 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
8662 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
8663 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
8664 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
8665 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
8674 case R_PPC64_TOC16_LO
:
8675 case R_PPC64_TOC16_DS
:
8676 case R_PPC64_TOC16_LO_DS
:
8678 /* Check for toc tls entries. */
8682 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
8689 tls_mask
= *toc_tls
;
8690 if (r_type
== R_PPC64_TOC16_DS
8691 || r_type
== R_PPC64_TOC16_LO_DS
)
8694 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
8699 /* If we found a GD reloc pair, then we might be
8700 doing a GD->IE transition. */
8703 tls_gd
= TLS_TPRELGD
;
8704 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8705 goto tls_get_addr_check
;
8707 else if (retval
== 3)
8709 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8710 goto tls_get_addr_check
;
8717 case R_PPC64_GOT_TPREL16_DS
:
8718 case R_PPC64_GOT_TPREL16_LO_DS
:
8720 && (tls_mask
& TLS_TPREL
) == 0)
8723 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
8725 insn
|= 0x3c0d0000; /* addis 0,13,0 */
8726 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
8727 r_type
= R_PPC64_TPREL16_HA
;
8728 if (toc_symndx
!= 0)
8730 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8731 /* We changed the symbol. Start over in order to
8732 get h, sym, sec etc. right. */
8737 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8743 && (tls_mask
& TLS_TPREL
) == 0)
8746 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8747 if ((insn
& ((0x3f << 26) | (31 << 11)))
8748 == ((31 << 26) | (13 << 11)))
8749 rtra
= insn
& ((1 << 26) - (1 << 16));
8750 else if ((insn
& ((0x3f << 26) | (31 << 16)))
8751 == ((31 << 26) | (13 << 16)))
8752 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
8755 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
8758 else if ((insn
& (31 << 1)) == 23 << 1
8759 && ((insn
& (31 << 6)) < 14 << 6
8760 || ((insn
& (31 << 6)) >= 16 << 6
8761 && (insn
& (31 << 6)) < 24 << 6)))
8762 /* load and store indexed -> dform. */
8763 insn
= (32 | ((insn
>> 6) & 31)) << 26;
8764 else if ((insn
& (31 << 1)) == 21 << 1
8765 && (insn
& (0x1a << 6)) == 0)
8766 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8767 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
8768 | ((insn
>> 6) & 1));
8769 else if ((insn
& (31 << 1)) == 21 << 1
8770 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
8772 insn
= (58 << 26) | 2;
8776 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8777 /* Was PPC64_TLS which sits on insn boundary, now
8778 PPC64_TPREL16_LO which is at insn+2. */
8780 r_type
= R_PPC64_TPREL16_LO
;
8781 if (toc_symndx
!= 0)
8783 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8784 /* We changed the symbol. Start over in order to
8785 get h, sym, sec etc. right. */
8790 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8794 case R_PPC64_GOT_TLSGD16_HI
:
8795 case R_PPC64_GOT_TLSGD16_HA
:
8796 tls_gd
= TLS_TPRELGD
;
8797 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8801 case R_PPC64_GOT_TLSLD16_HI
:
8802 case R_PPC64_GOT_TLSLD16_HA
:
8803 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8806 if ((tls_mask
& tls_gd
) != 0)
8807 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8808 + R_PPC64_GOT_TPREL16_DS
);
8811 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
8813 r_type
= R_PPC64_NONE
;
8815 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8819 case R_PPC64_GOT_TLSGD16
:
8820 case R_PPC64_GOT_TLSGD16_LO
:
8821 tls_gd
= TLS_TPRELGD
;
8822 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8823 goto tls_get_addr_check
;
8826 case R_PPC64_GOT_TLSLD16
:
8827 case R_PPC64_GOT_TLSLD16_LO
:
8828 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8831 if (rel
+ 1 < relend
)
8833 enum elf_ppc64_reloc_type r_type2
;
8834 unsigned long r_symndx2
;
8835 struct elf_link_hash_entry
*h2
;
8836 bfd_vma insn1
, insn2
, insn3
;
8839 /* The next instruction should be a call to
8840 __tls_get_addr. Peek at the reloc to be sure. */
8841 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
8842 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
8843 if (r_symndx2
< symtab_hdr
->sh_info
8844 || (r_type2
!= R_PPC64_REL14
8845 && r_type2
!= R_PPC64_REL14_BRTAKEN
8846 && r_type2
!= R_PPC64_REL14_BRNTAKEN
8847 && r_type2
!= R_PPC64_REL24
))
8850 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
8851 while (h2
->root
.type
== bfd_link_hash_indirect
8852 || h2
->root
.type
== bfd_link_hash_warning
)
8853 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
8854 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
8855 && h2
!= &htab
->tls_get_addr_fd
->elf
))
8858 /* OK, it checks out. Replace the call. */
8859 offset
= rel
[1].r_offset
;
8860 insn1
= bfd_get_32 (output_bfd
,
8861 contents
+ rel
->r_offset
- 2);
8862 insn3
= bfd_get_32 (output_bfd
,
8863 contents
+ offset
+ 4);
8864 if ((tls_mask
& tls_gd
) != 0)
8867 insn1
&= (1 << 26) - (1 << 2);
8868 insn1
|= 58 << 26; /* ld */
8869 insn2
= 0x7c636a14; /* add 3,3,13 */
8870 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
8871 if ((tls_mask
& TLS_EXPLICIT
) == 0)
8872 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8873 + R_PPC64_GOT_TPREL16_DS
);
8875 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
8876 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8881 insn1
= 0x3c6d0000; /* addis 3,13,0 */
8882 insn2
= 0x38630000; /* addi 3,3,0 */
8885 /* Was an LD reloc. */
8887 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8888 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8890 else if (toc_symndx
!= 0)
8891 r_symndx
= toc_symndx
;
8892 r_type
= R_PPC64_TPREL16_HA
;
8893 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8894 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
8895 R_PPC64_TPREL16_LO
);
8896 rel
[1].r_offset
+= 2;
8899 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
8903 rel
[1].r_offset
+= 4;
8905 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
8906 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8907 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
8908 if (tls_gd
== 0 || toc_symndx
!= 0)
8910 /* We changed the symbol. Start over in order
8911 to get h, sym, sec etc. right. */
8919 case R_PPC64_DTPMOD64
:
8920 if (rel
+ 1 < relend
8921 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
8922 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8924 if ((tls_mask
& TLS_GD
) == 0)
8926 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
8927 if ((tls_mask
& TLS_TPRELGD
) != 0)
8928 r_type
= R_PPC64_TPREL64
;
8931 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
8932 r_type
= R_PPC64_NONE
;
8934 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8939 if ((tls_mask
& TLS_LD
) == 0)
8941 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
8942 r_type
= R_PPC64_NONE
;
8943 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8948 case R_PPC64_TPREL64
:
8949 if ((tls_mask
& TLS_TPREL
) == 0)
8951 r_type
= R_PPC64_NONE
;
8952 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8957 /* Handle other relocations that tweak non-addend part of insn. */
8959 max_br_offset
= 1 << 25;
8960 addend
= rel
->r_addend
;
8966 /* Branch taken prediction relocations. */
8967 case R_PPC64_ADDR14_BRTAKEN
:
8968 case R_PPC64_REL14_BRTAKEN
:
8969 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
8972 /* Branch not taken prediction relocations. */
8973 case R_PPC64_ADDR14_BRNTAKEN
:
8974 case R_PPC64_REL14_BRNTAKEN
:
8975 insn
|= bfd_get_32 (output_bfd
,
8976 contents
+ rel
->r_offset
) & ~(0x01 << 21);
8980 max_br_offset
= 1 << 15;
8984 /* Calls to functions with a different TOC, such as calls to
8985 shared objects, need to alter the TOC pointer. This is
8986 done using a linkage stub. A REL24 branching to these
8987 linkage stubs needs to be followed by a nop, as the nop
8988 will be replaced with an instruction to restore the TOC
8993 && (((fdh
= h
->oh
) != NULL
8994 && fdh
->elf
.plt
.plist
!= NULL
)
8995 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
8997 && sec
->output_section
!= NULL
8998 && sec
->id
<= htab
->top_id
8999 && (htab
->stub_group
[sec
->id
].toc_off
9000 != htab
->stub_group
[input_section
->id
].toc_off
)))
9001 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9003 && (stub_entry
->stub_type
== ppc_stub_plt_call
9004 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9005 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9007 bfd_boolean can_plt_call
= FALSE
;
9009 if (rel
->r_offset
+ 8 <= input_section
->size
)
9012 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
9014 || nop
== CROR_151515
|| nop
== CROR_313131
)
9016 bfd_put_32 (input_bfd
, LD_R2_40R1
,
9017 contents
+ rel
->r_offset
+ 4);
9018 can_plt_call
= TRUE
;
9024 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9026 /* If this is a plain branch rather than a branch
9027 and link, don't require a nop. */
9029 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9031 can_plt_call
= TRUE
;
9034 && strcmp (h
->elf
.root
.root
.string
,
9035 ".__libc_start_main") == 0)
9037 /* Allow crt1 branch to go via a toc adjusting stub. */
9038 can_plt_call
= TRUE
;
9042 if (strcmp (input_section
->output_section
->name
,
9044 || strcmp (input_section
->output_section
->name
,
9046 (*_bfd_error_handler
)
9047 (_("%B(%A+0x%lx): automatic multiple TOCs "
9048 "not supported using your crt files; "
9049 "recompile with -mminimal-toc or upgrade gcc"),
9052 (long) rel
->r_offset
);
9054 (*_bfd_error_handler
)
9055 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9056 "does not allow automatic multiple TOCs; "
9057 "recompile with -mminimal-toc or "
9058 "-fno-optimize-sibling-calls, "
9059 "or make `%s' extern"),
9062 (long) rel
->r_offset
,
9065 bfd_set_error (bfd_error_bad_value
);
9071 && stub_entry
->stub_type
== ppc_stub_plt_call
)
9072 unresolved_reloc
= FALSE
;
9075 if (stub_entry
== NULL
9076 && get_opd_info (sec
) != NULL
)
9078 /* The branch destination is the value of the opd entry. */
9079 bfd_vma off
= (relocation
- sec
->output_section
->vma
9080 - sec
->output_offset
+ rel
->r_addend
);
9081 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
9082 if (dest
!= (bfd_vma
) -1)
9089 /* If the branch is out of reach we ought to have a long
9091 from
= (rel
->r_offset
9092 + input_section
->output_offset
9093 + input_section
->output_section
->vma
);
9095 if (stub_entry
== NULL
9096 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
9097 >= 2 * max_br_offset
)
9098 && r_type
!= R_PPC64_ADDR14_BRTAKEN
9099 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
9100 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
9103 if (stub_entry
!= NULL
)
9105 /* Munge up the value and addend so that we call the stub
9106 rather than the procedure directly. */
9107 relocation
= (stub_entry
->stub_offset
9108 + stub_entry
->stub_sec
->output_offset
9109 + stub_entry
->stub_sec
->output_section
->vma
);
9117 /* Set 'a' bit. This is 0b00010 in BO field for branch
9118 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9119 for branch on CTR insns (BO == 1a00t or 1a01t). */
9120 if ((insn
& (0x14 << 21)) == (0x04 << 21))
9122 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
9129 /* Invert 'y' bit if not the default. */
9130 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
9134 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9137 /* NOP out calls to undefined weak functions.
9138 We can thus call a weak function without first
9139 checking whether the function is defined. */
9141 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9142 && r_type
== R_PPC64_REL24
9144 && rel
->r_addend
== 0)
9146 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9157 (*_bfd_error_handler
)
9158 (_("%B: unknown relocation type %d for symbol %s"),
9159 input_bfd
, (int) r_type
, sym_name
);
9161 bfd_set_error (bfd_error_bad_value
);
9167 case R_PPC64_GNU_VTINHERIT
:
9168 case R_PPC64_GNU_VTENTRY
:
9171 /* GOT16 relocations. Like an ADDR16 using the symbol's
9172 address in the GOT as relocation value instead of the
9173 symbol's value itself. Also, create a GOT entry for the
9174 symbol and put the symbol value there. */
9175 case R_PPC64_GOT_TLSGD16
:
9176 case R_PPC64_GOT_TLSGD16_LO
:
9177 case R_PPC64_GOT_TLSGD16_HI
:
9178 case R_PPC64_GOT_TLSGD16_HA
:
9179 tls_type
= TLS_TLS
| TLS_GD
;
9182 case R_PPC64_GOT_TLSLD16
:
9183 case R_PPC64_GOT_TLSLD16_LO
:
9184 case R_PPC64_GOT_TLSLD16_HI
:
9185 case R_PPC64_GOT_TLSLD16_HA
:
9186 tls_type
= TLS_TLS
| TLS_LD
;
9189 case R_PPC64_GOT_TPREL16_DS
:
9190 case R_PPC64_GOT_TPREL16_LO_DS
:
9191 case R_PPC64_GOT_TPREL16_HI
:
9192 case R_PPC64_GOT_TPREL16_HA
:
9193 tls_type
= TLS_TLS
| TLS_TPREL
;
9196 case R_PPC64_GOT_DTPREL16_DS
:
9197 case R_PPC64_GOT_DTPREL16_LO_DS
:
9198 case R_PPC64_GOT_DTPREL16_HI
:
9199 case R_PPC64_GOT_DTPREL16_HA
:
9200 tls_type
= TLS_TLS
| TLS_DTPREL
;
9204 case R_PPC64_GOT16_LO
:
9205 case R_PPC64_GOT16_HI
:
9206 case R_PPC64_GOT16_HA
:
9207 case R_PPC64_GOT16_DS
:
9208 case R_PPC64_GOT16_LO_DS
:
9211 /* Relocation is to the entry for this symbol in the global
9216 unsigned long indx
= 0;
9218 if (tls_type
== (TLS_TLS
| TLS_LD
)
9220 || (h
->elf
.elf_link_hash_flags
9221 & ELF_LINK_HASH_DEF_DYNAMIC
) == 0))
9222 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
9225 struct got_entry
*ent
;
9229 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
9230 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
9233 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
9234 /* This is actually a static link, or it is a
9235 -Bsymbolic link and the symbol is defined
9236 locally, or the symbol was forced to be local
9237 because of a version file. */
9241 indx
= h
->elf
.dynindx
;
9242 unresolved_reloc
= FALSE
;
9244 ent
= h
->elf
.got
.glist
;
9248 if (local_got_ents
== NULL
)
9250 ent
= local_got_ents
[r_symndx
];
9253 for (; ent
!= NULL
; ent
= ent
->next
)
9254 if (ent
->addend
== rel
->r_addend
9255 && ent
->owner
== input_bfd
9256 && ent
->tls_type
== tls_type
)
9260 offp
= &ent
->got
.offset
;
9263 got
= ppc64_elf_tdata (input_bfd
)->got
;
9267 /* The offset must always be a multiple of 8. We use the
9268 least significant bit to record whether we have already
9269 processed this entry. */
9275 /* Generate relocs for the dynamic linker, except in
9276 the case of TLSLD where we'll use one entry per
9278 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
9281 if ((info
->shared
|| indx
!= 0)
9283 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
9284 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
9286 outrel
.r_offset
= (got
->output_section
->vma
9287 + got
->output_offset
9289 outrel
.r_addend
= rel
->r_addend
;
9290 if (tls_type
& (TLS_LD
| TLS_GD
))
9292 outrel
.r_addend
= 0;
9293 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
9294 if (tls_type
== (TLS_TLS
| TLS_GD
))
9296 loc
= relgot
->contents
;
9297 loc
+= (relgot
->reloc_count
++
9298 * sizeof (Elf64_External_Rela
));
9299 bfd_elf64_swap_reloca_out (output_bfd
,
9301 outrel
.r_offset
+= 8;
9302 outrel
.r_addend
= rel
->r_addend
;
9304 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
9307 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
9308 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
9309 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
9310 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
9313 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
9315 /* Write the .got section contents for the sake
9317 loc
= got
->contents
+ off
;
9318 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
9322 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
9324 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
9326 outrel
.r_addend
+= relocation
;
9327 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
9328 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
9330 loc
= relgot
->contents
;
9331 loc
+= (relgot
->reloc_count
++
9332 * sizeof (Elf64_External_Rela
));
9333 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
9336 /* Init the .got section contents here if we're not
9337 emitting a reloc. */
9340 relocation
+= rel
->r_addend
;
9341 if (tls_type
== (TLS_TLS
| TLS_LD
))
9343 else if (tls_type
!= 0)
9345 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9346 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
9347 relocation
+= DTP_OFFSET
- TP_OFFSET
;
9349 if (tls_type
== (TLS_TLS
| TLS_GD
))
9351 bfd_put_64 (output_bfd
, relocation
,
9352 got
->contents
+ off
+ 8);
9357 bfd_put_64 (output_bfd
, relocation
,
9358 got
->contents
+ off
);
9362 if (off
>= (bfd_vma
) -2)
9365 relocation
= got
->output_offset
+ off
;
9367 /* TOC base (r2) is TOC start plus 0x8000. */
9368 addend
= -TOC_BASE_OFF
;
9372 case R_PPC64_PLT16_HA
:
9373 case R_PPC64_PLT16_HI
:
9374 case R_PPC64_PLT16_LO
:
9377 /* Relocation is to the entry for this symbol in the
9378 procedure linkage table. */
9380 /* Resolve a PLT reloc against a local symbol directly,
9381 without using the procedure linkage table. */
9385 /* It's possible that we didn't make a PLT entry for this
9386 symbol. This happens when statically linking PIC code,
9387 or when using -Bsymbolic. Go find a match if there is a
9389 if (htab
->plt
!= NULL
)
9391 struct plt_entry
*ent
;
9392 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9393 if (ent
->addend
== rel
->r_addend
9394 && ent
->plt
.offset
!= (bfd_vma
) -1)
9396 relocation
= (htab
->plt
->output_section
->vma
9397 + htab
->plt
->output_offset
9399 unresolved_reloc
= FALSE
;
9405 /* Relocation value is TOC base. */
9406 relocation
= TOCstart
;
9408 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
9409 else if (unresolved_reloc
)
9411 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
9412 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
9414 unresolved_reloc
= TRUE
;
9417 /* TOC16 relocs. We want the offset relative to the TOC base,
9418 which is the address of the start of the TOC plus 0x8000.
9419 The TOC consists of sections .got, .toc, .tocbss, and .plt,
9422 case R_PPC64_TOC16_LO
:
9423 case R_PPC64_TOC16_HI
:
9424 case R_PPC64_TOC16_DS
:
9425 case R_PPC64_TOC16_LO_DS
:
9426 case R_PPC64_TOC16_HA
:
9427 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
9430 /* Relocate against the beginning of the section. */
9431 case R_PPC64_SECTOFF
:
9432 case R_PPC64_SECTOFF_LO
:
9433 case R_PPC64_SECTOFF_HI
:
9434 case R_PPC64_SECTOFF_DS
:
9435 case R_PPC64_SECTOFF_LO_DS
:
9436 case R_PPC64_SECTOFF_HA
:
9438 addend
-= sec
->output_section
->vma
;
9442 case R_PPC64_REL14_BRNTAKEN
:
9443 case R_PPC64_REL14_BRTAKEN
:
9447 case R_PPC64_TPREL16
:
9448 case R_PPC64_TPREL16_LO
:
9449 case R_PPC64_TPREL16_HI
:
9450 case R_PPC64_TPREL16_HA
:
9451 case R_PPC64_TPREL16_DS
:
9452 case R_PPC64_TPREL16_LO_DS
:
9453 case R_PPC64_TPREL16_HIGHER
:
9454 case R_PPC64_TPREL16_HIGHERA
:
9455 case R_PPC64_TPREL16_HIGHEST
:
9456 case R_PPC64_TPREL16_HIGHESTA
:
9457 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
9459 /* The TPREL16 relocs shouldn't really be used in shared
9460 libs as they will result in DT_TEXTREL being set, but
9461 support them anyway. */
9465 case R_PPC64_DTPREL16
:
9466 case R_PPC64_DTPREL16_LO
:
9467 case R_PPC64_DTPREL16_HI
:
9468 case R_PPC64_DTPREL16_HA
:
9469 case R_PPC64_DTPREL16_DS
:
9470 case R_PPC64_DTPREL16_LO_DS
:
9471 case R_PPC64_DTPREL16_HIGHER
:
9472 case R_PPC64_DTPREL16_HIGHERA
:
9473 case R_PPC64_DTPREL16_HIGHEST
:
9474 case R_PPC64_DTPREL16_HIGHESTA
:
9475 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9478 case R_PPC64_DTPMOD64
:
9483 case R_PPC64_TPREL64
:
9484 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
9487 case R_PPC64_DTPREL64
:
9488 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9491 /* Relocations that may need to be propagated if this is a
9496 case R_PPC64_ADDR14
:
9497 case R_PPC64_ADDR14_BRNTAKEN
:
9498 case R_PPC64_ADDR14_BRTAKEN
:
9499 case R_PPC64_ADDR16
:
9500 case R_PPC64_ADDR16_DS
:
9501 case R_PPC64_ADDR16_HA
:
9502 case R_PPC64_ADDR16_HI
:
9503 case R_PPC64_ADDR16_HIGHER
:
9504 case R_PPC64_ADDR16_HIGHERA
:
9505 case R_PPC64_ADDR16_HIGHEST
:
9506 case R_PPC64_ADDR16_HIGHESTA
:
9507 case R_PPC64_ADDR16_LO
:
9508 case R_PPC64_ADDR16_LO_DS
:
9509 case R_PPC64_ADDR24
:
9510 case R_PPC64_ADDR32
:
9511 case R_PPC64_ADDR64
:
9512 case R_PPC64_UADDR16
:
9513 case R_PPC64_UADDR32
:
9514 case R_PPC64_UADDR64
:
9515 /* r_symndx will be zero only for relocs against symbols
9516 from removed linkonce sections, or sections discarded by
9524 if ((input_section
->flags
& SEC_ALLOC
) == 0)
9527 if (NO_OPD_RELOCS
&& is_opd
)
9532 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
9533 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
9534 && (MUST_BE_DYN_RELOC (r_type
)
9535 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
9536 || (ELIMINATE_COPY_RELOCS
9539 && h
->elf
.dynindx
!= -1
9540 && !(h
->elf
.elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
)
9541 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)
9542 && !(h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
9544 Elf_Internal_Rela outrel
;
9545 bfd_boolean skip
, relocate
;
9550 /* When generating a dynamic object, these relocations
9551 are copied into the output file to be resolved at run
9557 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
9558 input_section
, rel
->r_offset
);
9559 if (out_off
== (bfd_vma
) -1)
9561 else if (out_off
== (bfd_vma
) -2)
9562 skip
= TRUE
, relocate
= TRUE
;
9563 out_off
+= (input_section
->output_section
->vma
9564 + input_section
->output_offset
);
9565 outrel
.r_offset
= out_off
;
9566 outrel
.r_addend
= rel
->r_addend
;
9568 /* Optimize unaligned reloc use. */
9569 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
9570 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
9571 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
9572 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
9573 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
9574 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
9575 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
9576 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
9577 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
9580 memset (&outrel
, 0, sizeof outrel
);
9581 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
9583 && r_type
!= R_PPC64_TOC
)
9584 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
9587 /* This symbol is local, or marked to become local,
9588 or this is an opd section reloc which must point
9589 at a local function. */
9590 outrel
.r_addend
+= relocation
;
9591 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
9593 if (is_opd
&& h
!= NULL
)
9595 /* Lie about opd entries. This case occurs
9596 when building shared libraries and we
9597 reference a function in another shared
9598 lib. The same thing happens for a weak
9599 definition in an application that's
9600 overridden by a strong definition in a
9601 shared lib. (I believe this is a generic
9602 bug in binutils handling of weak syms.)
9603 In these cases we won't use the opd
9604 entry in this lib. */
9605 unresolved_reloc
= FALSE
;
9607 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9609 /* We need to relocate .opd contents for ld.so.
9610 Prelink also wants simple and consistent rules
9611 for relocs. This make all RELATIVE relocs have
9612 *r_offset equal to r_addend. */
9619 if (bfd_is_abs_section (sec
))
9621 else if (sec
== NULL
|| sec
->owner
== NULL
)
9623 bfd_set_error (bfd_error_bad_value
);
9630 osec
= sec
->output_section
;
9631 indx
= elf_section_data (osec
)->dynindx
;
9633 /* We are turning this relocation into one
9634 against a section symbol, so subtract out
9635 the output section's address but not the
9636 offset of the input section in the output
9638 outrel
.r_addend
-= osec
->vma
;
9641 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
9645 sreloc
= elf_section_data (input_section
)->sreloc
;
9649 loc
= sreloc
->contents
;
9650 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
9651 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
9653 /* If this reloc is against an external symbol, it will
9654 be computed at runtime, so there's no need to do
9655 anything now. However, for the sake of prelink ensure
9656 that the section contents are a known value. */
9659 unresolved_reloc
= FALSE
;
9660 /* The value chosen here is quite arbitrary as ld.so
9661 ignores section contents except for the special
9662 case of .opd where the contents might be accessed
9663 before relocation. Choose zero, as that won't
9664 cause reloc overflow. */
9667 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
9668 to improve backward compatibility with older
9670 if (r_type
== R_PPC64_ADDR64
)
9671 addend
= outrel
.r_addend
;
9672 /* Adjust pc_relative relocs to have zero in *r_offset. */
9673 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
9674 addend
= (input_section
->output_section
->vma
9675 + input_section
->output_offset
9682 case R_PPC64_GLOB_DAT
:
9683 case R_PPC64_JMP_SLOT
:
9684 case R_PPC64_RELATIVE
:
9685 /* We shouldn't ever see these dynamic relocs in relocatable
9689 case R_PPC64_PLTGOT16
:
9690 case R_PPC64_PLTGOT16_DS
:
9691 case R_PPC64_PLTGOT16_HA
:
9692 case R_PPC64_PLTGOT16_HI
:
9693 case R_PPC64_PLTGOT16_LO
:
9694 case R_PPC64_PLTGOT16_LO_DS
:
9695 case R_PPC64_PLTREL32
:
9696 case R_PPC64_PLTREL64
:
9697 /* These ones haven't been implemented yet. */
9699 (*_bfd_error_handler
)
9700 (_("%B: relocation %s is not supported for symbol %s."),
9702 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
9704 bfd_set_error (bfd_error_invalid_operation
);
9709 /* Do any further special processing. */
9715 case R_PPC64_ADDR16_HA
:
9716 case R_PPC64_ADDR16_HIGHERA
:
9717 case R_PPC64_ADDR16_HIGHESTA
:
9718 case R_PPC64_GOT16_HA
:
9719 case R_PPC64_PLTGOT16_HA
:
9720 case R_PPC64_PLT16_HA
:
9721 case R_PPC64_TOC16_HA
:
9722 case R_PPC64_SECTOFF_HA
:
9723 case R_PPC64_TPREL16_HA
:
9724 case R_PPC64_DTPREL16_HA
:
9725 case R_PPC64_GOT_TLSGD16_HA
:
9726 case R_PPC64_GOT_TLSLD16_HA
:
9727 case R_PPC64_GOT_TPREL16_HA
:
9728 case R_PPC64_GOT_DTPREL16_HA
:
9729 case R_PPC64_TPREL16_HIGHER
:
9730 case R_PPC64_TPREL16_HIGHERA
:
9731 case R_PPC64_TPREL16_HIGHEST
:
9732 case R_PPC64_TPREL16_HIGHESTA
:
9733 case R_PPC64_DTPREL16_HIGHER
:
9734 case R_PPC64_DTPREL16_HIGHERA
:
9735 case R_PPC64_DTPREL16_HIGHEST
:
9736 case R_PPC64_DTPREL16_HIGHESTA
:
9737 /* It's just possible that this symbol is a weak symbol
9738 that's not actually defined anywhere. In that case,
9739 'sec' would be NULL, and we should leave the symbol
9740 alone (it will be set to zero elsewhere in the link). */
9742 /* Add 0x10000 if sign bit in 0:15 is set.
9743 Bits 0:15 are not used. */
9747 case R_PPC64_ADDR16_DS
:
9748 case R_PPC64_ADDR16_LO_DS
:
9749 case R_PPC64_GOT16_DS
:
9750 case R_PPC64_GOT16_LO_DS
:
9751 case R_PPC64_PLT16_LO_DS
:
9752 case R_PPC64_SECTOFF_DS
:
9753 case R_PPC64_SECTOFF_LO_DS
:
9754 case R_PPC64_TOC16_DS
:
9755 case R_PPC64_TOC16_LO_DS
:
9756 case R_PPC64_PLTGOT16_DS
:
9757 case R_PPC64_PLTGOT16_LO_DS
:
9758 case R_PPC64_GOT_TPREL16_DS
:
9759 case R_PPC64_GOT_TPREL16_LO_DS
:
9760 case R_PPC64_GOT_DTPREL16_DS
:
9761 case R_PPC64_GOT_DTPREL16_LO_DS
:
9762 case R_PPC64_TPREL16_DS
:
9763 case R_PPC64_TPREL16_LO_DS
:
9764 case R_PPC64_DTPREL16_DS
:
9765 case R_PPC64_DTPREL16_LO_DS
:
9766 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9768 /* If this reloc is against an lq insn, then the value must be
9769 a multiple of 16. This is somewhat of a hack, but the
9770 "correct" way to do this by defining _DQ forms of all the
9771 _DS relocs bloats all reloc switches in this file. It
9772 doesn't seem to make much sense to use any of these relocs
9773 in data, so testing the insn should be safe. */
9774 if ((insn
& (0x3f << 26)) == (56u << 26))
9776 if (((relocation
+ addend
) & mask
) != 0)
9778 (*_bfd_error_handler
)
9779 (_("%B: error: relocation %s not a multiple of %d"),
9781 ppc64_elf_howto_table
[r_type
]->name
,
9783 bfd_set_error (bfd_error_bad_value
);
9790 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9791 because such sections are not SEC_ALLOC and thus ld.so will
9792 not process them. */
9793 if (unresolved_reloc
9794 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9795 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
9797 (*_bfd_error_handler
)
9798 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9801 (long) rel
->r_offset
,
9802 ppc64_elf_howto_table
[(int) r_type
]->name
,
9803 h
->elf
.root
.root
.string
);
9807 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
9815 if (r
!= bfd_reloc_ok
)
9817 if (sym_name
== NULL
)
9818 sym_name
= "(null)";
9819 if (r
== bfd_reloc_overflow
)
9824 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9825 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
9827 /* Assume this is a call protected by other code that
9828 detects the symbol is undefined. If this is the case,
9829 we can safely ignore the overflow. If not, the
9830 program is hosed anyway, and a little warning isn't
9836 if (!((*info
->callbacks
->reloc_overflow
)
9837 (info
, sym_name
, ppc64_elf_howto_table
[r_type
]->name
,
9838 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
9843 (*_bfd_error_handler
)
9844 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9847 (long) rel
->r_offset
,
9848 ppc64_elf_howto_table
[r_type
]->name
,
9859 /* Adjust the value of any local symbols in opd sections. */
9862 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
9863 const char *name ATTRIBUTE_UNUSED
,
9864 Elf_Internal_Sym
*elfsym
,
9865 asection
*input_sec
,
9866 struct elf_link_hash_entry
*h
)
9868 long *opd_adjust
, adjust
;
9874 opd_adjust
= get_opd_info (input_sec
);
9875 if (opd_adjust
== NULL
)
9878 value
= elfsym
->st_value
- input_sec
->output_offset
;
9879 if (!info
->relocatable
)
9880 value
-= input_sec
->output_section
->vma
;
9882 adjust
= opd_adjust
[value
/ 8];
9884 elfsym
->st_value
= 0;
9886 elfsym
->st_value
+= adjust
;
9890 /* Finish up dynamic symbol handling. We set the contents of various
9891 dynamic sections here. */
9894 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9895 struct bfd_link_info
*info
,
9896 struct elf_link_hash_entry
*h
,
9897 Elf_Internal_Sym
*sym
)
9899 struct ppc_link_hash_table
*htab
;
9901 struct plt_entry
*ent
;
9902 Elf_Internal_Rela rela
;
9905 htab
= ppc_hash_table (info
);
9906 dynobj
= htab
->elf
.dynobj
;
9908 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9909 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9911 /* This symbol has an entry in the procedure linkage
9912 table. Set it up. */
9914 if (htab
->plt
== NULL
9915 || htab
->relplt
== NULL
9916 || htab
->glink
== NULL
)
9919 /* Create a JMP_SLOT reloc to inform the dynamic linker to
9920 fill in the PLT entry. */
9921 rela
.r_offset
= (htab
->plt
->output_section
->vma
9922 + htab
->plt
->output_offset
9924 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
9925 rela
.r_addend
= ent
->addend
;
9927 loc
= htab
->relplt
->contents
;
9928 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
9929 * sizeof (Elf64_External_Rela
));
9930 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
9933 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
9935 Elf_Internal_Rela rela
;
9938 /* This symbol needs a copy reloc. Set it up. */
9940 if (h
->dynindx
== -1
9941 || (h
->root
.type
!= bfd_link_hash_defined
9942 && h
->root
.type
!= bfd_link_hash_defweak
)
9943 || htab
->relbss
== NULL
)
9946 rela
.r_offset
= (h
->root
.u
.def
.value
9947 + h
->root
.u
.def
.section
->output_section
->vma
9948 + h
->root
.u
.def
.section
->output_offset
);
9949 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
9951 loc
= htab
->relbss
->contents
;
9952 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
9953 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
9956 /* Mark some specially defined symbols as absolute. */
9957 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
9958 sym
->st_shndx
= SHN_ABS
;
9963 /* Used to decide how to sort relocs in an optimal manner for the
9964 dynamic linker, before writing them out. */
9966 static enum elf_reloc_type_class
9967 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
9969 enum elf_ppc64_reloc_type r_type
;
9971 r_type
= ELF64_R_TYPE (rela
->r_info
);
9974 case R_PPC64_RELATIVE
:
9975 return reloc_class_relative
;
9976 case R_PPC64_JMP_SLOT
:
9977 return reloc_class_plt
;
9979 return reloc_class_copy
;
9981 return reloc_class_normal
;
9985 /* Finish up the dynamic sections. */
9988 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
9989 struct bfd_link_info
*info
)
9991 struct ppc_link_hash_table
*htab
;
9995 htab
= ppc_hash_table (info
);
9996 dynobj
= htab
->elf
.dynobj
;
9997 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9999 if (htab
->elf
.dynamic_sections_created
)
10001 Elf64_External_Dyn
*dyncon
, *dynconend
;
10003 if (sdyn
== NULL
|| htab
->got
== NULL
)
10006 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
10007 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10008 for (; dyncon
< dynconend
; dyncon
++)
10010 Elf_Internal_Dyn dyn
;
10013 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10020 case DT_PPC64_GLINK
:
10022 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10023 /* We stupidly defined DT_PPC64_GLINK to be the start
10024 of glink rather than the first entry point, which is
10025 what ld.so needs, and now have a bigger stub to
10026 support automatic multiple TOCs. */
10027 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
10031 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10034 dyn
.d_un
.d_ptr
= s
->vma
;
10037 case DT_PPC64_OPDSZ
:
10038 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10041 dyn
.d_un
.d_val
= s
->size
;
10046 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10051 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10055 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10059 /* Don't count procedure linkage table relocs in the
10060 overall reloc count. */
10064 dyn
.d_un
.d_val
-= s
->size
;
10068 /* We may not be using the standard ELF linker script.
10069 If .rela.plt is the first .rela section, we adjust
10070 DT_RELA to not include it. */
10074 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
10076 dyn
.d_un
.d_ptr
+= s
->size
;
10080 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10084 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
10086 /* Fill in the first entry in the global offset table.
10087 We use it to hold the link-time TOCbase. */
10088 bfd_put_64 (output_bfd
,
10089 elf_gp (output_bfd
) + TOC_BASE_OFF
,
10090 htab
->got
->contents
);
10092 /* Set .got entry size. */
10093 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
10096 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
10098 /* Set .plt entry size. */
10099 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
10103 /* We need to handle writing out multiple GOT sections ourselves,
10104 since we didn't add them to DYNOBJ. */
10105 while ((dynobj
= dynobj
->link_next
) != NULL
)
10108 s
= ppc64_elf_tdata (dynobj
)->got
;
10111 && s
->output_section
!= bfd_abs_section_ptr
10112 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10113 s
->contents
, s
->output_offset
,
10116 s
= ppc64_elf_tdata (dynobj
)->relgot
;
10119 && s
->output_section
!= bfd_abs_section_ptr
10120 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10121 s
->contents
, s
->output_offset
,
10129 #include "elf64-target.h"