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
;
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela
*opd_relocs
;
2388 #define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2391 #define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2394 /* Override the generic function because we store some extras. */
2397 ppc64_elf_mkobject (bfd
*abfd
)
2399 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2400 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2401 if (abfd
->tdata
.any
== NULL
)
2406 /* Return 1 if target is one of ours. */
2409 is_ppc64_elf_target (const struct bfd_target
*targ
)
2411 extern const bfd_target bfd_elf64_powerpc_vec
;
2412 extern const bfd_target bfd_elf64_powerpcle_vec
;
2414 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2417 /* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2421 ppc64_elf_object_p (bfd
*abfd
)
2423 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2425 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2427 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd
->arch_info
= abfd
->arch_info
->next
;
2431 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2437 /* Support for core dump NOTE sections. */
2440 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2442 size_t offset
, size
;
2444 if (note
->descsz
!= 504)
2448 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2451 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2459 size
, note
->descpos
+ offset
);
2463 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2465 if (note
->descsz
!= 136)
2468 elf_tdata (abfd
)->core_program
2469 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2470 elf_tdata (abfd
)->core_command
2471 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2476 /* Merge backend specific data from an object file to the output
2477 object file when linking. */
2480 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2482 /* Check if we have the same endianess. */
2483 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2484 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2485 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2489 if (bfd_big_endian (ibfd
))
2490 msg
= _("%B: compiled for a big endian system "
2491 "and target is little endian");
2493 msg
= _("%B: compiled for a little endian system "
2494 "and target is big endian");
2496 (*_bfd_error_handler
) (msg
, ibfd
);
2498 bfd_set_error (bfd_error_wrong_format
);
2505 /* Add extra PPC sections. */
2507 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2509 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2510 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2511 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2513 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2514 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2515 { NULL
, 0, 0, 0, 0 }
2518 struct _ppc64_elf_section_data
2520 struct bfd_elf_section_data elf
;
2522 /* An array with one entry for each opd function descriptor. */
2525 /* Points to the function code section for local opd entries. */
2526 asection
**func_sec
;
2527 /* After editing .opd, adjust references to opd local syms. */
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2536 #define ppc64_elf_section_data(sec) \
2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2540 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2542 struct _ppc64_elf_section_data
*sdata
;
2543 bfd_size_type amt
= sizeof (*sdata
);
2545 sdata
= bfd_zalloc (abfd
, amt
);
2548 sec
->used_by_bfd
= sdata
;
2550 return _bfd_elf_new_section_hook (abfd
, sec
);
2554 get_opd_info (asection
* sec
)
2557 && ppc64_elf_section_data (sec
) != NULL
2558 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2559 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2563 /* Parameters for the qsort hook. */
2564 static asection
*synthetic_opd
;
2565 static bfd_boolean synthetic_relocatable
;
2567 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2570 compare_symbols (const void *ap
, const void *bp
)
2572 const asymbol
*a
= * (const asymbol
**) ap
;
2573 const asymbol
*b
= * (const asymbol
**) bp
;
2575 /* Section symbols first. */
2576 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2578 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2581 /* then .opd symbols. */
2582 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2584 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2587 /* then other code symbols. */
2588 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2589 == (SEC_CODE
| SEC_ALLOC
)
2590 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2591 != (SEC_CODE
| SEC_ALLOC
))
2594 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2595 != (SEC_CODE
| SEC_ALLOC
)
2596 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2597 == (SEC_CODE
| SEC_ALLOC
))
2600 if (synthetic_relocatable
)
2602 if (a
->section
->id
< b
->section
->id
)
2605 if (a
->section
->id
> b
->section
->id
)
2609 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2612 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2618 /* Search SYMS for a symbol of the given VALUE. */
2621 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2629 mid
= (lo
+ hi
) >> 1;
2630 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2632 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2642 mid
= (lo
+ hi
) >> 1;
2643 if (syms
[mid
]->section
->id
< id
)
2645 else if (syms
[mid
]->section
->id
> id
)
2647 else if (syms
[mid
]->value
< value
)
2649 else if (syms
[mid
]->value
> value
)
2658 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2662 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2663 long static_count
, asymbol
**static_syms
,
2664 long dyn_count
, asymbol
**dyn_syms
,
2671 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2673 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2678 opd
= bfd_get_section_by_name (abfd
, ".opd");
2682 symcount
= static_count
;
2684 symcount
+= dyn_count
;
2688 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2692 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2694 /* Use both symbol tables. */
2695 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2696 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2698 else if (!relocatable
&& static_count
== 0)
2699 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2701 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2703 synthetic_opd
= opd
;
2704 synthetic_relocatable
= relocatable
;
2705 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2707 if (!relocatable
&& symcount
> 1)
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2714 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2715 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2716 syms
[j
++] = syms
[i
];
2721 if (syms
[i
]->section
== opd
)
2725 for (; i
< symcount
; ++i
)
2726 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2727 != (SEC_CODE
| SEC_ALLOC
))
2728 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2732 for (; i
< symcount
; ++i
)
2733 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2737 for (; i
< symcount
; ++i
)
2738 if (syms
[i
]->section
!= opd
)
2742 for (; i
< symcount
; ++i
)
2743 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2744 != (SEC_CODE
| SEC_ALLOC
))
2749 if (opdsymend
== secsymend
)
2754 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2759 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2760 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2763 || ! (*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2767 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2771 while (r
< opd
->relocation
+ relcount
2772 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2775 if (r
== opd
->relocation
+ relcount
)
2778 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2781 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2784 sym
= *r
->sym_ptr_ptr
;
2785 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2786 sym
->section
->id
, sym
->value
+ r
->addend
))
2789 size
+= sizeof (asymbol
);
2790 size
+= strlen (syms
[i
]->name
) + 2;
2794 s
= *ret
= bfd_malloc (size
);
2801 names
= (char *) (s
+ count
);
2803 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2807 while (r
< opd
->relocation
+ relcount
2808 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2811 if (r
== opd
->relocation
+ relcount
)
2814 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2817 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2820 sym
= *r
->sym_ptr_ptr
;
2821 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2822 sym
->section
->id
, sym
->value
+ r
->addend
))
2827 s
->section
= sym
->section
;
2828 s
->value
= sym
->value
+ r
->addend
;
2831 len
= strlen (syms
[i
]->name
);
2832 memcpy (names
, syms
[i
]->name
, len
+ 1);
2843 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2847 free_contents_and_exit
:
2854 for (i
= secsymend
; i
< opdsymend
; ++i
)
2858 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2859 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2862 size
+= sizeof (asymbol
);
2863 size
+= strlen (syms
[i
]->name
) + 2;
2867 s
= *ret
= bfd_malloc (size
);
2871 goto free_contents_and_exit
;
2874 names
= (char *) (s
+ count
);
2876 for (i
= secsymend
; i
< opdsymend
; ++i
)
2880 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2881 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2885 asection
*sec
= abfd
->sections
;
2892 long mid
= (lo
+ hi
) >> 1;
2893 if (syms
[mid
]->section
->vma
< ent
)
2895 else if (syms
[mid
]->section
->vma
> ent
)
2899 sec
= syms
[mid
]->section
;
2904 if (lo
>= hi
&& lo
> codesecsym
)
2905 sec
= syms
[lo
- 1]->section
;
2907 for (; sec
!= NULL
; sec
= sec
->next
)
2911 if ((sec
->flags
& SEC_ALLOC
) == 0
2912 || (sec
->flags
& SEC_LOAD
) == 0)
2914 if ((sec
->flags
& SEC_CODE
) != 0)
2917 s
->value
= ent
- s
->section
->vma
;
2920 len
= strlen (syms
[i
]->name
);
2921 memcpy (names
, syms
[i
]->name
, len
+ 1);
2934 /* The following functions are specific to the ELF linker, while
2935 functions above are used generally. Those named ppc64_elf_* are
2936 called by the main ELF linker code. They appear in this file more
2937 or less in the order in which they are called. eg.
2938 ppc64_elf_check_relocs is called early in the link process,
2939 ppc64_elf_finish_dynamic_sections is one of the last functions
2942 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2943 functions have both a function code symbol and a function descriptor
2944 symbol. A call to foo in a relocatable object file looks like:
2951 The function definition in another object file might be:
2955 . .quad .TOC.@tocbase
2961 When the linker resolves the call during a static link, the branch
2962 unsurprisingly just goes to .foo and the .opd information is unused.
2963 If the function definition is in a shared library, things are a little
2964 different: The call goes via a plt call stub, the opd information gets
2965 copied to the plt, and the linker patches the nop.
2973 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2974 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2975 . std 2,40(1) # this is the general idea
2983 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2985 The "reloc ()" notation is supposed to indicate that the linker emits
2986 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2989 What are the difficulties here? Well, firstly, the relocations
2990 examined by the linker in check_relocs are against the function code
2991 sym .foo, while the dynamic relocation in the plt is emitted against
2992 the function descriptor symbol, foo. Somewhere along the line, we need
2993 to carefully copy dynamic link information from one symbol to the other.
2994 Secondly, the generic part of the elf linker will make .foo a dynamic
2995 symbol as is normal for most other backends. We need foo dynamic
2996 instead, at least for an application final link. However, when
2997 creating a shared library containing foo, we need to have both symbols
2998 dynamic so that references to .foo are satisfied during the early
2999 stages of linking. Otherwise the linker might decide to pull in a
3000 definition from some other object, eg. a static library.
3002 Update: As of August 2004, we support a new convention. Function
3003 calls may use the function descriptor symbol, ie. "bl foo". This
3004 behaves exactly as "bl .foo". */
3006 /* The linker needs to keep track of the number of relocs that it
3007 decides to copy as dynamic relocs in check_relocs for each symbol.
3008 This is so that it can later discard them if they are found to be
3009 unnecessary. We store the information in a field extending the
3010 regular ELF linker hash table. */
3012 struct ppc_dyn_relocs
3014 struct ppc_dyn_relocs
*next
;
3016 /* The input section of the reloc. */
3019 /* Total number of relocs copied for the input section. */
3020 bfd_size_type count
;
3022 /* Number of pc-relative relocs copied for the input section. */
3023 bfd_size_type pc_count
;
3026 /* Track GOT entries needed for a given symbol. We might need more
3027 than one got entry per symbol. */
3030 struct got_entry
*next
;
3032 /* The symbol addend that we'll be placing in the GOT. */
3035 /* Unlike other ELF targets, we use separate GOT entries for the same
3036 symbol referenced from different input files. This is to support
3037 automatic multiple TOC/GOT sections, where the TOC base can vary
3038 from one input file to another.
3040 Point to the BFD owning this GOT entry. */
3043 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3044 TLS_TPREL or TLS_DTPREL for tls entries. */
3047 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3050 bfd_signed_vma refcount
;
3055 /* The same for PLT. */
3058 struct plt_entry
*next
;
3064 bfd_signed_vma refcount
;
3069 /* Of those relocs that might be copied as dynamic relocs, this macro
3070 selects those that must be copied when linking a shared library,
3071 even when the symbol is local. */
3073 #define MUST_BE_DYN_RELOC(RTYPE) \
3074 ((RTYPE) != R_PPC64_REL32 \
3075 && (RTYPE) != R_PPC64_REL64 \
3076 && (RTYPE) != R_PPC64_REL30)
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3081 shared lib. With code that gcc generates, it's vital that this be
3082 enabled; In the PowerPC64 ABI, the address of a function is actually
3083 the address of a function descriptor, which resides in the .opd
3084 section. gcc uses the descriptor directly rather than going via the
3085 GOT as some other ABI's do, which means that initialized function
3086 pointers must reference the descriptor. Thus, a function pointer
3087 initialized to the address of a function in a shared library will
3088 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3089 redefines the function descriptor symbol to point to the copy. This
3090 presents a problem as a plt entry for that function is also
3091 initialized from the function descriptor symbol and the copy reloc
3092 may not be initialized first. */
3093 #define ELIMINATE_COPY_RELOCS 1
3095 /* Section name for stubs is the associated section name plus this
3097 #define STUB_SUFFIX ".stub"
3100 ppc_stub_long_branch:
3101 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3102 destination, but a 24 bit branch in a stub section will reach.
3105 ppc_stub_plt_branch:
3106 Similar to the above, but a 24 bit branch in the stub section won't
3107 reach its destination.
3108 . addis %r12,%r2,xxx@toc@ha
3109 . ld %r11,xxx@toc@l(%r12)
3114 Used to call a function in a shared library. If it so happens that
3115 the plt entry referenced crosses a 64k boundary, then an extra
3116 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3117 xxx+16 as appropriate.
3118 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx+0@toc@l(%r12)
3121 . ld %r2,xxx+8@toc@l(%r12)
3123 . ld %r11,xxx+16@toc@l(%r12)
3126 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3127 code to adjust the value and save r2 to support multiple toc sections.
3128 A ppc_stub_long_branch with an r2 offset looks like:
3130 . addis %r2,%r2,off@ha
3131 . addi %r2,%r2,off@l
3134 A ppc_stub_plt_branch with an r2 offset looks like:
3136 . addis %r12,%r2,xxx@toc@ha
3137 . ld %r11,xxx@toc@l(%r12)
3138 . addis %r2,%r2,off@ha
3139 . addi %r2,%r2,off@l
3144 enum ppc_stub_type
{
3146 ppc_stub_long_branch
,
3147 ppc_stub_long_branch_r2off
,
3148 ppc_stub_plt_branch
,
3149 ppc_stub_plt_branch_r2off
,
3153 struct ppc_stub_hash_entry
{
3155 /* Base hash table entry structure. */
3156 struct bfd_hash_entry root
;
3158 enum ppc_stub_type stub_type
;
3160 /* The stub section. */
3163 /* Offset within stub_sec of the beginning of this stub. */
3164 bfd_vma stub_offset
;
3166 /* Given the symbol's value and its section we can determine its final
3167 value when building the stubs (so the stub knows where to jump. */
3168 bfd_vma target_value
;
3169 asection
*target_section
;
3171 /* The symbol table entry, if any, that this was derived from. */
3172 struct ppc_link_hash_entry
*h
;
3174 /* And the reloc addend that this was derived from. */
3177 /* Where this stub is being called from, or, in the case of combined
3178 stub sections, the first input section in the group. */
3182 struct ppc_branch_hash_entry
{
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root
;
3187 /* Offset within .branch_lt. */
3188 unsigned int offset
;
3190 /* Generation marker. */
3194 struct ppc_link_hash_entry
3196 struct elf_link_hash_entry elf
;
3198 /* A pointer to the most recently used stub hash entry against this
3200 struct ppc_stub_hash_entry
*stub_cache
;
3202 /* Track dynamic relocs copied for this symbol. */
3203 struct ppc_dyn_relocs
*dyn_relocs
;
3205 /* Link between function code and descriptor symbols. */
3206 struct ppc_link_hash_entry
*oh
;
3208 /* Flag function code and descriptor symbols. */
3209 unsigned int is_func
:1;
3210 unsigned int is_func_descriptor
:1;
3212 /* Whether global opd/toc sym has been adjusted or not.
3213 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3214 should be set for all globals defined in any opd/toc section. */
3215 unsigned int adjust_done
:1;
3217 /* Set if we twiddled this symbol to weak at some stage. */
3218 unsigned int was_undefined
:1;
3220 /* Contexts in which symbol is used in the GOT (or TOC).
3221 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3222 corresponding relocs are encountered during check_relocs.
3223 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3224 indicate the corresponding GOT entry type is not needed.
3225 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3226 a TPREL one. We use a separate flag rather than setting TPREL
3227 just for convenience in distinguishing the two cases. */
3228 #define TLS_GD 1 /* GD reloc. */
3229 #define TLS_LD 2 /* LD reloc. */
3230 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3231 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3232 #define TLS_TLS 16 /* Any TLS reloc. */
3233 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3234 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3238 /* ppc64 ELF linker hash table. */
3240 struct ppc_link_hash_table
3242 struct elf_link_hash_table elf
;
3244 /* The stub hash table. */
3245 struct bfd_hash_table stub_hash_table
;
3247 /* Another hash table for plt_branch stubs. */
3248 struct bfd_hash_table branch_hash_table
;
3250 /* Linker stub bfd. */
3253 /* Linker call-backs. */
3254 asection
* (*add_stub_section
) (const char *, asection
*);
3255 void (*layout_sections_again
) (void);
3257 /* Array to keep track of which stub sections have been created, and
3258 information on stub grouping. */
3260 /* This is the section to which stubs in the group will be attached. */
3262 /* The stub section. */
3264 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3268 /* Temp used when calculating TOC pointers. */
3271 /* Highest input section id. */
3274 /* Highest output section index. */
3277 /* List of input sections for each output section. */
3278 asection
**input_list
;
3280 /* Short-cuts to get to dynamic linker sections. */
3291 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3292 struct ppc_link_hash_entry
*tls_get_addr
;
3293 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3296 unsigned long stub_count
[ppc_stub_plt_call
];
3298 /* Number of stubs against global syms. */
3299 unsigned long stub_globals
;
3301 /* Set if we should emit symbols for stubs. */
3302 unsigned int emit_stub_syms
:1;
3304 /* Support for multiple toc sections. */
3305 unsigned int no_multi_toc
:1;
3306 unsigned int multi_toc_needed
:1;
3309 unsigned int stub_error
:1;
3311 /* Flag set when small branches are detected. Used to
3312 select suitable defaults for the stub group size. */
3313 unsigned int has_14bit_branch
:1;
3315 /* Temp used by ppc64_elf_check_directives. */
3316 unsigned int twiddled_syms
:1;
3318 /* Incremented every time we size stubs. */
3319 unsigned int stub_iteration
;
3321 /* Small local sym to section mapping cache. */
3322 struct sym_sec_cache sym_sec
;
3325 /* Rename some of the generic section flags to better document how they
3327 #define has_toc_reloc has_gp_reloc
3328 #define makes_toc_func_call need_finalize_relax
3329 #define call_check_in_progress reloc_done
3331 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3333 #define ppc_hash_table(p) \
3334 ((struct ppc_link_hash_table *) ((p)->hash))
3336 #define ppc_stub_hash_lookup(table, string, create, copy) \
3337 ((struct ppc_stub_hash_entry *) \
3338 bfd_hash_lookup ((table), (string), (create), (copy)))
3340 #define ppc_branch_hash_lookup(table, string, create, copy) \
3341 ((struct ppc_branch_hash_entry *) \
3342 bfd_hash_lookup ((table), (string), (create), (copy)))
3344 /* Create an entry in the stub hash table. */
3346 static struct bfd_hash_entry
*
3347 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3348 struct bfd_hash_table
*table
,
3351 /* Allocate the structure if it has not already been allocated by a
3355 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3360 /* Call the allocation method of the superclass. */
3361 entry
= bfd_hash_newfunc (entry
, table
, string
);
3364 struct ppc_stub_hash_entry
*eh
;
3366 /* Initialize the local fields. */
3367 eh
= (struct ppc_stub_hash_entry
*) entry
;
3368 eh
->stub_type
= ppc_stub_none
;
3369 eh
->stub_sec
= NULL
;
3370 eh
->stub_offset
= 0;
3371 eh
->target_value
= 0;
3372 eh
->target_section
= NULL
;
3380 /* Create an entry in the branch hash table. */
3382 static struct bfd_hash_entry
*
3383 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3384 struct bfd_hash_table
*table
,
3387 /* Allocate the structure if it has not already been allocated by a
3391 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3396 /* Call the allocation method of the superclass. */
3397 entry
= bfd_hash_newfunc (entry
, table
, string
);
3400 struct ppc_branch_hash_entry
*eh
;
3402 /* Initialize the local fields. */
3403 eh
= (struct ppc_branch_hash_entry
*) entry
;
3411 /* Create an entry in a ppc64 ELF linker hash table. */
3413 static struct bfd_hash_entry
*
3414 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3415 struct bfd_hash_table
*table
,
3418 /* Allocate the structure if it has not already been allocated by a
3422 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3427 /* Call the allocation method of the superclass. */
3428 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3431 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3433 eh
->stub_cache
= NULL
;
3434 eh
->dyn_relocs
= NULL
;
3437 eh
->is_func_descriptor
= 0;
3438 eh
->adjust_done
= 0;
3439 eh
->was_undefined
= 0;
3446 /* Create a ppc64 ELF linker hash table. */
3448 static struct bfd_link_hash_table
*
3449 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3451 struct ppc_link_hash_table
*htab
;
3452 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3454 htab
= bfd_zmalloc (amt
);
3458 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3464 /* Init the stub hash table too. */
3465 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3468 /* And the branch hash table. */
3469 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3472 /* Initializing two fields of the union is just cosmetic. We really
3473 only care about glist, but when compiled on a 32-bit host the
3474 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3475 debugger inspection of these fields look nicer. */
3476 htab
->elf
.init_refcount
.refcount
= 0;
3477 htab
->elf
.init_refcount
.glist
= NULL
;
3478 htab
->elf
.init_offset
.offset
= 0;
3479 htab
->elf
.init_offset
.glist
= NULL
;
3481 return &htab
->elf
.root
;
3484 /* Free the derived linker hash table. */
3487 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3489 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3491 bfd_hash_table_free (&ret
->stub_hash_table
);
3492 bfd_hash_table_free (&ret
->branch_hash_table
);
3493 _bfd_generic_link_hash_table_free (hash
);
3496 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3499 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3501 struct ppc_link_hash_table
*htab
;
3503 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3505 /* Always hook our dynamic sections into the first bfd, which is the
3506 linker created stub bfd. This ensures that the GOT header is at
3507 the start of the output TOC section. */
3508 htab
= ppc_hash_table (info
);
3509 htab
->stub_bfd
= abfd
;
3510 htab
->elf
.dynobj
= abfd
;
3513 /* Build a name for an entry in the stub hash table. */
3516 ppc_stub_name (const asection
*input_section
,
3517 const asection
*sym_sec
,
3518 const struct ppc_link_hash_entry
*h
,
3519 const Elf_Internal_Rela
*rel
)
3524 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3525 offsets from a sym as a branch target? In fact, we could
3526 probably assume the addend is always zero. */
3527 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3531 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3532 stub_name
= bfd_malloc (len
);
3533 if (stub_name
!= NULL
)
3535 sprintf (stub_name
, "%08x.%s+%x",
3536 input_section
->id
& 0xffffffff,
3537 h
->elf
.root
.root
.string
,
3538 (int) rel
->r_addend
& 0xffffffff);
3543 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3544 stub_name
= bfd_malloc (len
);
3545 if (stub_name
!= NULL
)
3547 sprintf (stub_name
, "%08x.%x:%x+%x",
3548 input_section
->id
& 0xffffffff,
3549 sym_sec
->id
& 0xffffffff,
3550 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3551 (int) rel
->r_addend
& 0xffffffff);
3554 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3555 stub_name
[len
- 2] = 0;
3559 /* Look up an entry in the stub hash. Stub entries are cached because
3560 creating the stub name takes a bit of time. */
3562 static struct ppc_stub_hash_entry
*
3563 ppc_get_stub_entry (const asection
*input_section
,
3564 const asection
*sym_sec
,
3565 struct ppc_link_hash_entry
*h
,
3566 const Elf_Internal_Rela
*rel
,
3567 struct ppc_link_hash_table
*htab
)
3569 struct ppc_stub_hash_entry
*stub_entry
;
3570 const asection
*id_sec
;
3572 /* If this input section is part of a group of sections sharing one
3573 stub section, then use the id of the first section in the group.
3574 Stub names need to include a section id, as there may well be
3575 more than one stub used to reach say, printf, and we need to
3576 distinguish between them. */
3577 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3579 if (h
!= NULL
&& h
->stub_cache
!= NULL
3580 && h
->stub_cache
->h
== h
3581 && h
->stub_cache
->id_sec
== id_sec
)
3583 stub_entry
= h
->stub_cache
;
3589 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3590 if (stub_name
== NULL
)
3593 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3594 stub_name
, FALSE
, FALSE
);
3596 h
->stub_cache
= stub_entry
;
3604 /* Add a new stub entry to the stub hash. Not all fields of the new
3605 stub entry are initialised. */
3607 static struct ppc_stub_hash_entry
*
3608 ppc_add_stub (const char *stub_name
,
3610 struct ppc_link_hash_table
*htab
)
3614 struct ppc_stub_hash_entry
*stub_entry
;
3616 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3617 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3618 if (stub_sec
== NULL
)
3620 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3621 if (stub_sec
== NULL
)
3627 namelen
= strlen (link_sec
->name
);
3628 len
= namelen
+ sizeof (STUB_SUFFIX
);
3629 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3633 memcpy (s_name
, link_sec
->name
, namelen
);
3634 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3635 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3636 if (stub_sec
== NULL
)
3638 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3640 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3643 /* Enter this entry into the linker stub hash table. */
3644 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3646 if (stub_entry
== NULL
)
3648 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3649 section
->owner
, stub_name
);
3653 stub_entry
->stub_sec
= stub_sec
;
3654 stub_entry
->stub_offset
= 0;
3655 stub_entry
->id_sec
= link_sec
;
3659 /* Create sections for linker generated code. */
3662 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3664 struct ppc_link_hash_table
*htab
;
3667 htab
= ppc_hash_table (info
);
3669 /* Create .sfpr for code to save and restore fp regs. */
3670 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3671 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3672 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3673 if (htab
->sfpr
== NULL
3674 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3675 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3678 /* Create .glink for lazy dynamic linking support. */
3679 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3680 if (htab
->glink
== NULL
3681 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3682 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3685 /* Create .branch_lt for plt_branch stubs. */
3686 flags
= (SEC_ALLOC
| SEC_LOAD
3687 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3688 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3689 if (htab
->brlt
== NULL
3690 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3691 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3694 if (info
->shared
|| info
->emitrelocations
)
3696 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3697 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3698 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3700 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3701 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3707 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3708 not already done. */
3711 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3713 asection
*got
, *relgot
;
3715 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3719 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3722 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3727 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3728 | SEC_LINKER_CREATED
);
3730 got
= bfd_make_section (abfd
, ".got");
3732 || !bfd_set_section_flags (abfd
, got
, flags
)
3733 || !bfd_set_section_alignment (abfd
, got
, 3))
3736 relgot
= bfd_make_section (abfd
, ".rela.got");
3738 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3739 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3742 ppc64_elf_tdata (abfd
)->got
= got
;
3743 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3747 /* Create the dynamic sections, and set up shortcuts. */
3750 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3752 struct ppc_link_hash_table
*htab
;
3754 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3757 htab
= ppc_hash_table (info
);
3759 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3760 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3761 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3762 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3764 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3766 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3767 || (!info
->shared
&& !htab
->relbss
))
3773 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3776 ppc64_elf_copy_indirect_symbol
3777 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3778 struct elf_link_hash_entry
*dir
,
3779 struct elf_link_hash_entry
*ind
)
3781 struct ppc_link_hash_entry
*edir
, *eind
;
3783 edir
= (struct ppc_link_hash_entry
*) dir
;
3784 eind
= (struct ppc_link_hash_entry
*) ind
;
3786 /* Copy over any dynamic relocs we may have on the indirect sym. */
3787 if (eind
->dyn_relocs
!= NULL
)
3789 if (edir
->dyn_relocs
!= NULL
)
3791 struct ppc_dyn_relocs
**pp
;
3792 struct ppc_dyn_relocs
*p
;
3794 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3797 /* Add reloc counts against the weak sym to the strong sym
3798 list. Merge any entries against the same section. */
3799 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3801 struct ppc_dyn_relocs
*q
;
3803 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3804 if (q
->sec
== p
->sec
)
3806 q
->pc_count
+= p
->pc_count
;
3807 q
->count
+= p
->count
;
3814 *pp
= edir
->dyn_relocs
;
3817 edir
->dyn_relocs
= eind
->dyn_relocs
;
3818 eind
->dyn_relocs
= NULL
;
3821 edir
->is_func
|= eind
->is_func
;
3822 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3823 edir
->tls_mask
|= eind
->tls_mask
;
3825 /* If called to transfer flags for a weakdef during processing
3826 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3827 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3828 if (!(ELIMINATE_COPY_RELOCS
3829 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3830 && edir
->elf
.dynamic_adjusted
))
3831 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3833 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3834 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3835 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3836 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3838 /* If we were called to copy over info for a weak sym, that's all. */
3839 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3842 /* Copy over got entries that we may have already seen to the
3843 symbol which just became indirect. */
3844 if (eind
->elf
.got
.glist
!= NULL
)
3846 if (edir
->elf
.got
.glist
!= NULL
)
3848 struct got_entry
**entp
;
3849 struct got_entry
*ent
;
3851 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3853 struct got_entry
*dent
;
3855 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3856 if (dent
->addend
== ent
->addend
3857 && dent
->owner
== ent
->owner
3858 && dent
->tls_type
== ent
->tls_type
)
3860 dent
->got
.refcount
+= ent
->got
.refcount
;
3867 *entp
= edir
->elf
.got
.glist
;
3870 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3871 eind
->elf
.got
.glist
= NULL
;
3874 /* And plt entries. */
3875 if (eind
->elf
.plt
.plist
!= NULL
)
3877 if (edir
->elf
.plt
.plist
!= NULL
)
3879 struct plt_entry
**entp
;
3880 struct plt_entry
*ent
;
3882 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3884 struct plt_entry
*dent
;
3886 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3887 if (dent
->addend
== ent
->addend
)
3889 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3896 *entp
= edir
->elf
.plt
.plist
;
3899 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3900 eind
->elf
.plt
.plist
= NULL
;
3903 if (edir
->elf
.dynindx
== -1)
3905 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3906 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3907 eind
->elf
.dynindx
= -1;
3908 eind
->elf
.dynstr_index
= 0;
3911 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3914 /* Find the function descriptor hash entry from the given function code
3915 hash entry FH. Link the entries via their OH fields. */
3917 static struct ppc_link_hash_entry
*
3918 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3920 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3924 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3926 fdh
= (struct ppc_link_hash_entry
*)
3927 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3930 fdh
->is_func_descriptor
= 1;
3940 /* Hacks to support old ABI code.
3941 When making function calls, old ABI code references function entry
3942 points (dot symbols), while new ABI code references the function
3943 descriptor symbol. We need to make any combination of reference and
3944 definition work together, without breaking archive linking.
3946 For a defined function "foo" and an undefined call to "bar":
3947 An old object defines "foo" and ".foo", references ".bar" (possibly
3949 A new object defines "foo" and references "bar".
3951 A new object thus has no problem with its undefined symbols being
3952 satisfied by definitions in an old object. On the other hand, the
3953 old object won't have ".bar" satisfied by a new object. */
3955 /* Fix function descriptor symbols defined in .opd sections to be
3959 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
3960 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3961 Elf_Internal_Sym
*isym
,
3962 const char **name ATTRIBUTE_UNUSED
,
3963 flagword
*flags ATTRIBUTE_UNUSED
,
3965 bfd_vma
*value ATTRIBUTE_UNUSED
)
3968 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
3969 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
3973 /* This function makes an old ABI object reference to ".bar" cause the
3974 inclusion of a new ABI object archive that defines "bar". */
3976 static struct elf_link_hash_entry
*
3977 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
3978 struct bfd_link_info
*info
,
3981 struct elf_link_hash_entry
*h
;
3985 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
3992 len
= strlen (name
);
3993 dot_name
= bfd_alloc (abfd
, len
+ 2);
3994 if (dot_name
== NULL
)
3995 return (struct elf_link_hash_entry
*) 0 - 1;
3997 memcpy (dot_name
+ 1, name
, len
+ 1);
3998 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
3999 bfd_release (abfd
, dot_name
);
4003 /* This function satisfies all old ABI object references to ".bar" if a
4004 new ABI object defines "bar". Well, at least, undefined dot symbols
4005 are made weak. This stops later archive searches from including an
4006 object if we already have a function descriptor definition. It also
4007 prevents the linker complaining about undefined symbols.
4008 We also check and correct mismatched symbol visibility here. The
4009 most restrictive visibility of the function descriptor and the
4010 function entry symbol is used. */
4013 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4015 struct bfd_link_info
*info
;
4016 struct ppc_link_hash_table
*htab
;
4017 struct ppc_link_hash_entry
*eh
;
4018 struct ppc_link_hash_entry
*fdh
;
4020 if (h
->root
.type
== bfd_link_hash_indirect
)
4023 if (h
->root
.type
== bfd_link_hash_warning
)
4024 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4026 if (h
->root
.root
.string
[0] != '.')
4030 htab
= ppc_hash_table (info
);
4031 eh
= (struct ppc_link_hash_entry
*) h
;
4032 fdh
= get_fdh (eh
, htab
);
4035 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4036 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4037 if (entry_vis
< descr_vis
)
4038 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4039 else if (entry_vis
> descr_vis
)
4040 eh
->elf
.other
+= descr_vis
- entry_vis
;
4042 if (eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4044 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4045 eh
->was_undefined
= 1;
4046 htab
->twiddled_syms
= 1;
4054 ppc64_elf_check_directives (bfd
*abfd ATTRIBUTE_UNUSED
,
4055 struct bfd_link_info
*info
)
4057 struct ppc_link_hash_table
*htab
;
4059 htab
= ppc_hash_table (info
);
4060 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4063 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, info
);
4065 /* We need to fix the undefs list for any syms we have twiddled to
4067 if (htab
->twiddled_syms
)
4069 struct bfd_link_hash_entry
**pun
;
4071 pun
= &htab
->elf
.root
.undefs
;
4072 while (*pun
!= NULL
)
4074 struct bfd_link_hash_entry
*h
= *pun
;
4076 if (h
->type
!= bfd_link_hash_undefined
4077 && h
->type
!= bfd_link_hash_common
)
4079 *pun
= h
->u
.undef
.next
;
4080 h
->u
.undef
.next
= NULL
;
4081 if (h
== htab
->elf
.root
.undefs_tail
)
4083 if (pun
== &htab
->elf
.root
.undefs
)
4084 htab
->elf
.root
.undefs_tail
= NULL
;
4086 /* pun points at an u.undef.next field. Go back to
4087 the start of the link_hash_entry. */
4088 htab
->elf
.root
.undefs_tail
= (struct bfd_link_hash_entry
*)
4089 ((char *) pun
- ((char *) &h
->u
.undef
.next
- (char *) h
));
4094 pun
= &h
->u
.undef
.next
;
4097 htab
->twiddled_syms
= 0;
4103 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4104 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4106 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4107 char *local_got_tls_masks
;
4109 if (local_got_ents
== NULL
)
4111 bfd_size_type size
= symtab_hdr
->sh_info
;
4113 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4114 local_got_ents
= bfd_zalloc (abfd
, size
);
4115 if (local_got_ents
== NULL
)
4117 elf_local_got_ents (abfd
) = local_got_ents
;
4120 if ((tls_type
& TLS_EXPLICIT
) == 0)
4122 struct got_entry
*ent
;
4124 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4125 if (ent
->addend
== r_addend
4126 && ent
->owner
== abfd
4127 && ent
->tls_type
== tls_type
)
4131 bfd_size_type amt
= sizeof (*ent
);
4132 ent
= bfd_alloc (abfd
, amt
);
4135 ent
->next
= local_got_ents
[r_symndx
];
4136 ent
->addend
= r_addend
;
4138 ent
->tls_type
= tls_type
;
4139 ent
->got
.refcount
= 0;
4140 local_got_ents
[r_symndx
] = ent
;
4142 ent
->got
.refcount
+= 1;
4145 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4146 local_got_tls_masks
[r_symndx
] |= tls_type
;
4151 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4153 struct plt_entry
*ent
;
4155 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4156 if (ent
->addend
== addend
)
4160 bfd_size_type amt
= sizeof (*ent
);
4161 ent
= bfd_alloc (abfd
, amt
);
4164 ent
->next
= eh
->elf
.plt
.plist
;
4165 ent
->addend
= addend
;
4166 ent
->plt
.refcount
= 0;
4167 eh
->elf
.plt
.plist
= ent
;
4169 ent
->plt
.refcount
+= 1;
4170 eh
->elf
.needs_plt
= 1;
4175 /* Look through the relocs for a section during the first phase, and
4176 calculate needed space in the global offset table, procedure
4177 linkage table, and dynamic reloc sections. */
4180 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4181 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4183 struct ppc_link_hash_table
*htab
;
4184 Elf_Internal_Shdr
*symtab_hdr
;
4185 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4186 const Elf_Internal_Rela
*rel
;
4187 const Elf_Internal_Rela
*rel_end
;
4189 asection
**opd_sym_map
;
4191 if (info
->relocatable
)
4194 /* Don't do anything special with non-loaded, non-alloced sections.
4195 In particular, any relocs in such sections should not affect GOT
4196 and PLT reference counting (ie. we don't allow them to create GOT
4197 or PLT entries), there's no possibility or desire to optimize TLS
4198 relocs, and there's not much point in propagating relocs to shared
4199 libs that the dynamic linker won't relocate. */
4200 if ((sec
->flags
& SEC_ALLOC
) == 0)
4203 htab
= ppc_hash_table (info
);
4204 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4206 sym_hashes
= elf_sym_hashes (abfd
);
4207 sym_hashes_end
= (sym_hashes
4208 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4209 - symtab_hdr
->sh_info
);
4213 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4215 /* Garbage collection needs some extra help with .opd sections.
4216 We don't want to necessarily keep everything referenced by
4217 relocs in .opd, as that would keep all functions. Instead,
4218 if we reference an .opd symbol (a function descriptor), we
4219 want to keep the function code symbol's section. This is
4220 easy for global symbols, but for local syms we need to keep
4221 information about the associated function section. Later, if
4222 edit_opd deletes entries, we'll use this array to adjust
4223 local syms in .opd. */
4225 asection
*func_section
;
4230 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4231 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4232 if (opd_sym_map
== NULL
)
4234 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
4237 if (htab
->sfpr
== NULL
4238 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4241 rel_end
= relocs
+ sec
->reloc_count
;
4242 for (rel
= relocs
; rel
< rel_end
; rel
++)
4244 unsigned long r_symndx
;
4245 struct elf_link_hash_entry
*h
;
4246 enum elf_ppc64_reloc_type r_type
;
4249 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4250 if (r_symndx
< symtab_hdr
->sh_info
)
4253 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4255 r_type
= ELF64_R_TYPE (rel
->r_info
);
4258 case R_PPC64_GOT_TLSLD16
:
4259 case R_PPC64_GOT_TLSLD16_LO
:
4260 case R_PPC64_GOT_TLSLD16_HI
:
4261 case R_PPC64_GOT_TLSLD16_HA
:
4262 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4263 tls_type
= TLS_TLS
| TLS_LD
;
4266 case R_PPC64_GOT_TLSGD16
:
4267 case R_PPC64_GOT_TLSGD16_LO
:
4268 case R_PPC64_GOT_TLSGD16_HI
:
4269 case R_PPC64_GOT_TLSGD16_HA
:
4270 tls_type
= TLS_TLS
| TLS_GD
;
4273 case R_PPC64_GOT_TPREL16_DS
:
4274 case R_PPC64_GOT_TPREL16_LO_DS
:
4275 case R_PPC64_GOT_TPREL16_HI
:
4276 case R_PPC64_GOT_TPREL16_HA
:
4278 info
->flags
|= DF_STATIC_TLS
;
4279 tls_type
= TLS_TLS
| TLS_TPREL
;
4282 case R_PPC64_GOT_DTPREL16_DS
:
4283 case R_PPC64_GOT_DTPREL16_LO_DS
:
4284 case R_PPC64_GOT_DTPREL16_HI
:
4285 case R_PPC64_GOT_DTPREL16_HA
:
4286 tls_type
= TLS_TLS
| TLS_DTPREL
;
4288 sec
->has_tls_reloc
= 1;
4292 case R_PPC64_GOT16_DS
:
4293 case R_PPC64_GOT16_HA
:
4294 case R_PPC64_GOT16_HI
:
4295 case R_PPC64_GOT16_LO
:
4296 case R_PPC64_GOT16_LO_DS
:
4297 /* This symbol requires a global offset table entry. */
4298 sec
->has_toc_reloc
= 1;
4299 if (ppc64_elf_tdata (abfd
)->got
== NULL
4300 && !create_got_section (abfd
, info
))
4305 struct ppc_link_hash_entry
*eh
;
4306 struct got_entry
*ent
;
4308 eh
= (struct ppc_link_hash_entry
*) h
;
4309 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4310 if (ent
->addend
== rel
->r_addend
4311 && ent
->owner
== abfd
4312 && ent
->tls_type
== tls_type
)
4316 bfd_size_type amt
= sizeof (*ent
);
4317 ent
= bfd_alloc (abfd
, amt
);
4320 ent
->next
= eh
->elf
.got
.glist
;
4321 ent
->addend
= rel
->r_addend
;
4323 ent
->tls_type
= tls_type
;
4324 ent
->got
.refcount
= 0;
4325 eh
->elf
.got
.glist
= ent
;
4327 ent
->got
.refcount
+= 1;
4328 eh
->tls_mask
|= tls_type
;
4331 /* This is a global offset table entry for a local symbol. */
4332 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4333 rel
->r_addend
, tls_type
))
4337 case R_PPC64_PLT16_HA
:
4338 case R_PPC64_PLT16_HI
:
4339 case R_PPC64_PLT16_LO
:
4342 /* This symbol requires a procedure linkage table entry. We
4343 actually build the entry in adjust_dynamic_symbol,
4344 because this might be a case of linking PIC code without
4345 linking in any dynamic objects, in which case we don't
4346 need to generate a procedure linkage table after all. */
4349 /* It does not make sense to have a procedure linkage
4350 table entry for a local symbol. */
4351 bfd_set_error (bfd_error_bad_value
);
4355 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4360 /* The following relocations don't need to propagate the
4361 relocation if linking a shared object since they are
4362 section relative. */
4363 case R_PPC64_SECTOFF
:
4364 case R_PPC64_SECTOFF_LO
:
4365 case R_PPC64_SECTOFF_HI
:
4366 case R_PPC64_SECTOFF_HA
:
4367 case R_PPC64_SECTOFF_DS
:
4368 case R_PPC64_SECTOFF_LO_DS
:
4369 case R_PPC64_DTPREL16
:
4370 case R_PPC64_DTPREL16_LO
:
4371 case R_PPC64_DTPREL16_HI
:
4372 case R_PPC64_DTPREL16_HA
:
4373 case R_PPC64_DTPREL16_DS
:
4374 case R_PPC64_DTPREL16_LO_DS
:
4375 case R_PPC64_DTPREL16_HIGHER
:
4376 case R_PPC64_DTPREL16_HIGHERA
:
4377 case R_PPC64_DTPREL16_HIGHEST
:
4378 case R_PPC64_DTPREL16_HIGHESTA
:
4383 case R_PPC64_TOC16_LO
:
4384 case R_PPC64_TOC16_HI
:
4385 case R_PPC64_TOC16_HA
:
4386 case R_PPC64_TOC16_DS
:
4387 case R_PPC64_TOC16_LO_DS
:
4388 sec
->has_toc_reloc
= 1;
4391 /* This relocation describes the C++ object vtable hierarchy.
4392 Reconstruct it for later use during GC. */
4393 case R_PPC64_GNU_VTINHERIT
:
4394 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4398 /* This relocation describes which C++ vtable entries are actually
4399 used. Record for later use during GC. */
4400 case R_PPC64_GNU_VTENTRY
:
4401 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4406 case R_PPC64_REL14_BRTAKEN
:
4407 case R_PPC64_REL14_BRNTAKEN
:
4408 htab
->has_14bit_branch
= 1;
4414 /* We may need a .plt entry if the function this reloc
4415 refers to is in a shared lib. */
4416 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4419 if (h
== &htab
->tls_get_addr
->elf
4420 || h
== &htab
->tls_get_addr_fd
->elf
)
4421 sec
->has_tls_reloc
= 1;
4422 else if (htab
->tls_get_addr
== NULL
4423 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
4424 && (h
->root
.root
.string
[15] == 0
4425 || h
->root
.root
.string
[15] == '@'))
4427 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4428 sec
->has_tls_reloc
= 1;
4430 else if (htab
->tls_get_addr_fd
== NULL
4431 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4432 && (h
->root
.root
.string
[14] == 0
4433 || h
->root
.root
.string
[14] == '@'))
4435 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4436 sec
->has_tls_reloc
= 1;
4441 case R_PPC64_TPREL64
:
4442 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4444 info
->flags
|= DF_STATIC_TLS
;
4447 case R_PPC64_DTPMOD64
:
4448 if (rel
+ 1 < rel_end
4449 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4450 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4451 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4453 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4456 case R_PPC64_DTPREL64
:
4457 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4459 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4460 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4461 /* This is the second reloc of a dtpmod, dtprel pair.
4462 Don't mark with TLS_DTPREL. */
4466 sec
->has_tls_reloc
= 1;
4469 struct ppc_link_hash_entry
*eh
;
4470 eh
= (struct ppc_link_hash_entry
*) h
;
4471 eh
->tls_mask
|= tls_type
;
4474 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4475 rel
->r_addend
, tls_type
))
4478 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4480 /* One extra to simplify get_tls_mask. */
4481 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4482 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4483 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4486 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4487 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4489 /* Mark the second slot of a GD or LD entry.
4490 -1 to indicate GD and -2 to indicate LD. */
4491 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4492 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4493 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4494 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4497 case R_PPC64_TPREL16
:
4498 case R_PPC64_TPREL16_LO
:
4499 case R_PPC64_TPREL16_HI
:
4500 case R_PPC64_TPREL16_HA
:
4501 case R_PPC64_TPREL16_DS
:
4502 case R_PPC64_TPREL16_LO_DS
:
4503 case R_PPC64_TPREL16_HIGHER
:
4504 case R_PPC64_TPREL16_HIGHERA
:
4505 case R_PPC64_TPREL16_HIGHEST
:
4506 case R_PPC64_TPREL16_HIGHESTA
:
4509 info
->flags
|= DF_STATIC_TLS
;
4514 case R_PPC64_ADDR64
:
4515 if (opd_sym_map
!= NULL
4516 && rel
+ 1 < rel_end
4517 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4521 if (h
->root
.root
.string
[0] == '.'
4522 && h
->root
.root
.string
[1] != 0
4523 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4526 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4532 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4537 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4545 case R_PPC64_ADDR14
:
4546 case R_PPC64_ADDR14_BRNTAKEN
:
4547 case R_PPC64_ADDR14_BRTAKEN
:
4548 case R_PPC64_ADDR16
:
4549 case R_PPC64_ADDR16_DS
:
4550 case R_PPC64_ADDR16_HA
:
4551 case R_PPC64_ADDR16_HI
:
4552 case R_PPC64_ADDR16_HIGHER
:
4553 case R_PPC64_ADDR16_HIGHERA
:
4554 case R_PPC64_ADDR16_HIGHEST
:
4555 case R_PPC64_ADDR16_HIGHESTA
:
4556 case R_PPC64_ADDR16_LO
:
4557 case R_PPC64_ADDR16_LO_DS
:
4558 case R_PPC64_ADDR24
:
4559 case R_PPC64_ADDR32
:
4560 case R_PPC64_UADDR16
:
4561 case R_PPC64_UADDR32
:
4562 case R_PPC64_UADDR64
:
4564 if (h
!= NULL
&& !info
->shared
)
4565 /* We may need a copy reloc. */
4568 /* Don't propagate .opd relocs. */
4569 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4572 /* If we are creating a shared library, and this is a reloc
4573 against a global symbol, or a non PC relative reloc
4574 against a local symbol, then we need to copy the reloc
4575 into the shared library. However, if we are linking with
4576 -Bsymbolic, we do not need to copy a reloc against a
4577 global symbol which is defined in an object we are
4578 including in the link (i.e., DEF_REGULAR is set). At
4579 this point we have not seen all the input files, so it is
4580 possible that DEF_REGULAR is not set now but will be set
4581 later (it is never cleared). In case of a weak definition,
4582 DEF_REGULAR may be cleared later by a strong definition in
4583 a shared library. We account for that possibility below by
4584 storing information in the dyn_relocs field of the hash
4585 table entry. A similar situation occurs when creating
4586 shared libraries and symbol visibility changes render the
4589 If on the other hand, we are creating an executable, we
4590 may need to keep relocations for symbols satisfied by a
4591 dynamic library if we manage to avoid copy relocs for the
4595 && (MUST_BE_DYN_RELOC (r_type
)
4597 && (! info
->symbolic
4598 || h
->root
.type
== bfd_link_hash_defweak
4599 || !h
->def_regular
))))
4600 || (ELIMINATE_COPY_RELOCS
4603 && (h
->root
.type
== bfd_link_hash_defweak
4604 || !h
->def_regular
)))
4606 struct ppc_dyn_relocs
*p
;
4607 struct ppc_dyn_relocs
**head
;
4609 /* We must copy these reloc types into the output file.
4610 Create a reloc section in dynobj and make room for
4617 name
= (bfd_elf_string_from_elf_section
4619 elf_elfheader (abfd
)->e_shstrndx
,
4620 elf_section_data (sec
)->rel_hdr
.sh_name
));
4624 if (strncmp (name
, ".rela", 5) != 0
4625 || strcmp (bfd_get_section_name (abfd
, sec
),
4628 (*_bfd_error_handler
)
4629 (_("%B: bad relocation section name `%s\'"),
4631 bfd_set_error (bfd_error_bad_value
);
4634 dynobj
= htab
->elf
.dynobj
;
4635 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4640 sreloc
= bfd_make_section (dynobj
, name
);
4641 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4642 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4643 if ((sec
->flags
& SEC_ALLOC
) != 0)
4644 flags
|= SEC_ALLOC
| SEC_LOAD
;
4646 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
4647 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4650 elf_section_data (sec
)->sreloc
= sreloc
;
4653 /* If this is a global symbol, we count the number of
4654 relocations we need for this symbol. */
4657 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4661 /* Track dynamic relocs needed for local syms too.
4662 We really need local syms available to do this
4666 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4671 head
= ((struct ppc_dyn_relocs
**)
4672 &elf_section_data (s
)->local_dynrel
);
4676 if (p
== NULL
|| p
->sec
!= sec
)
4678 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4689 if (!MUST_BE_DYN_RELOC (r_type
))
4702 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4703 of the code entry point, and its section. */
4706 opd_entry_value (asection
*opd_sec
,
4708 asection
**code_sec
,
4711 bfd
*opd_bfd
= opd_sec
->owner
;
4712 Elf_Internal_Rela
*relocs
;
4713 Elf_Internal_Rela
*lo
, *hi
, *look
;
4716 /* No relocs implies we are linking a --just-symbols object. */
4717 if (opd_sec
->reloc_count
== 0)
4721 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4722 return (bfd_vma
) -1;
4724 if (code_sec
!= NULL
)
4726 asection
*sec
, *likely
= NULL
;
4727 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4729 && (sec
->flags
& SEC_LOAD
) != 0
4730 && (sec
->flags
& SEC_ALLOC
) != 0)
4735 if (code_off
!= NULL
)
4736 *code_off
= val
- likely
->vma
;
4742 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4744 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4746 /* Go find the opd reloc at the sym address. */
4748 BFD_ASSERT (lo
!= NULL
);
4749 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4753 look
= lo
+ (hi
- lo
) / 2;
4754 if (look
->r_offset
< offset
)
4756 else if (look
->r_offset
> offset
)
4760 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4761 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4762 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4764 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4767 if (symndx
< symtab_hdr
->sh_info
)
4769 Elf_Internal_Sym
*sym
;
4771 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4774 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4775 symtab_hdr
->sh_info
,
4776 0, NULL
, NULL
, NULL
);
4779 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4783 val
= sym
->st_value
;
4785 if ((sym
->st_shndx
!= SHN_UNDEF
4786 && sym
->st_shndx
< SHN_LORESERVE
)
4787 || sym
->st_shndx
> SHN_HIRESERVE
)
4788 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4789 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4793 struct elf_link_hash_entry
**sym_hashes
;
4794 struct elf_link_hash_entry
*rh
;
4796 sym_hashes
= elf_sym_hashes (opd_bfd
);
4797 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4798 while (rh
->root
.type
== bfd_link_hash_indirect
4799 || rh
->root
.type
== bfd_link_hash_warning
)
4800 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4801 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4802 || rh
->root
.type
== bfd_link_hash_defweak
);
4803 val
= rh
->root
.u
.def
.value
;
4804 sec
= rh
->root
.u
.def
.section
;
4806 val
+= look
->r_addend
;
4807 if (code_off
!= NULL
)
4809 if (code_sec
!= NULL
)
4811 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4812 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4821 /* Return the section that should be marked against GC for a given
4825 ppc64_elf_gc_mark_hook (asection
*sec
,
4826 struct bfd_link_info
*info
,
4827 Elf_Internal_Rela
*rel
,
4828 struct elf_link_hash_entry
*h
,
4829 Elf_Internal_Sym
*sym
)
4833 /* First mark all our entry sym sections. */
4834 if (info
->gc_sym_list
!= NULL
)
4836 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4837 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4839 info
->gc_sym_list
= NULL
;
4842 struct ppc_link_hash_entry
*eh
;
4844 eh
= (struct ppc_link_hash_entry
*)
4845 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4848 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4849 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4852 if (eh
->is_func_descriptor
)
4853 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4854 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4855 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4856 eh
->elf
.root
.u
.def
.value
,
4857 &rsec
, NULL
) != (bfd_vma
) -1)
4863 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4865 rsec
= eh
->elf
.root
.u
.def
.section
;
4867 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4871 while (sym
!= NULL
);
4874 /* Syms return NULL if we're marking .opd, so we avoid marking all
4875 function sections, as all functions are referenced in .opd. */
4877 if (get_opd_info (sec
) != NULL
)
4882 enum elf_ppc64_reloc_type r_type
;
4883 struct ppc_link_hash_entry
*eh
;
4885 r_type
= ELF64_R_TYPE (rel
->r_info
);
4888 case R_PPC64_GNU_VTINHERIT
:
4889 case R_PPC64_GNU_VTENTRY
:
4893 switch (h
->root
.type
)
4895 case bfd_link_hash_defined
:
4896 case bfd_link_hash_defweak
:
4897 eh
= (struct ppc_link_hash_entry
*) h
;
4898 if (eh
->oh
!= NULL
&& eh
->oh
->is_func_descriptor
)
4901 /* Function descriptor syms cause the associated
4902 function code sym section to be marked. */
4903 if (eh
->is_func_descriptor
)
4905 /* They also mark their opd section. */
4906 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4907 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4908 ppc64_elf_gc_mark_hook
);
4910 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4912 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4913 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4914 eh
->elf
.root
.u
.def
.value
,
4915 &rsec
, NULL
) != (bfd_vma
) -1)
4917 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4918 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4919 ppc64_elf_gc_mark_hook
);
4922 rsec
= h
->root
.u
.def
.section
;
4925 case bfd_link_hash_common
:
4926 rsec
= h
->root
.u
.c
.p
->section
;
4936 asection
**opd_sym_section
;
4938 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4939 opd_sym_section
= get_opd_info (rsec
);
4940 if (opd_sym_section
!= NULL
)
4943 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4945 rsec
= opd_sym_section
[sym
->st_value
/ 8];
4952 /* Update the .got, .plt. and dynamic reloc reference counts for the
4953 section being removed. */
4956 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4957 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4959 struct ppc_link_hash_table
*htab
;
4960 Elf_Internal_Shdr
*symtab_hdr
;
4961 struct elf_link_hash_entry
**sym_hashes
;
4962 struct got_entry
**local_got_ents
;
4963 const Elf_Internal_Rela
*rel
, *relend
;
4965 if ((sec
->flags
& SEC_ALLOC
) == 0)
4968 elf_section_data (sec
)->local_dynrel
= NULL
;
4970 htab
= ppc_hash_table (info
);
4971 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4972 sym_hashes
= elf_sym_hashes (abfd
);
4973 local_got_ents
= elf_local_got_ents (abfd
);
4975 relend
= relocs
+ sec
->reloc_count
;
4976 for (rel
= relocs
; rel
< relend
; rel
++)
4978 unsigned long r_symndx
;
4979 enum elf_ppc64_reloc_type r_type
;
4980 struct elf_link_hash_entry
*h
= NULL
;
4983 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4984 r_type
= ELF64_R_TYPE (rel
->r_info
);
4985 if (r_symndx
>= symtab_hdr
->sh_info
)
4987 struct ppc_link_hash_entry
*eh
;
4988 struct ppc_dyn_relocs
**pp
;
4989 struct ppc_dyn_relocs
*p
;
4991 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4992 eh
= (struct ppc_link_hash_entry
*) h
;
4994 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4997 /* Everything must go for SEC. */
5005 case R_PPC64_GOT_TLSLD16
:
5006 case R_PPC64_GOT_TLSLD16_LO
:
5007 case R_PPC64_GOT_TLSLD16_HI
:
5008 case R_PPC64_GOT_TLSLD16_HA
:
5009 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5010 tls_type
= TLS_TLS
| TLS_LD
;
5013 case R_PPC64_GOT_TLSGD16
:
5014 case R_PPC64_GOT_TLSGD16_LO
:
5015 case R_PPC64_GOT_TLSGD16_HI
:
5016 case R_PPC64_GOT_TLSGD16_HA
:
5017 tls_type
= TLS_TLS
| TLS_GD
;
5020 case R_PPC64_GOT_TPREL16_DS
:
5021 case R_PPC64_GOT_TPREL16_LO_DS
:
5022 case R_PPC64_GOT_TPREL16_HI
:
5023 case R_PPC64_GOT_TPREL16_HA
:
5024 tls_type
= TLS_TLS
| TLS_TPREL
;
5027 case R_PPC64_GOT_DTPREL16_DS
:
5028 case R_PPC64_GOT_DTPREL16_LO_DS
:
5029 case R_PPC64_GOT_DTPREL16_HI
:
5030 case R_PPC64_GOT_DTPREL16_HA
:
5031 tls_type
= TLS_TLS
| TLS_DTPREL
;
5035 case R_PPC64_GOT16_DS
:
5036 case R_PPC64_GOT16_HA
:
5037 case R_PPC64_GOT16_HI
:
5038 case R_PPC64_GOT16_LO
:
5039 case R_PPC64_GOT16_LO_DS
:
5042 struct got_entry
*ent
;
5047 ent
= local_got_ents
[r_symndx
];
5049 for (; ent
!= NULL
; ent
= ent
->next
)
5050 if (ent
->addend
== rel
->r_addend
5051 && ent
->owner
== abfd
5052 && ent
->tls_type
== tls_type
)
5056 if (ent
->got
.refcount
> 0)
5057 ent
->got
.refcount
-= 1;
5061 case R_PPC64_PLT16_HA
:
5062 case R_PPC64_PLT16_HI
:
5063 case R_PPC64_PLT16_LO
:
5067 case R_PPC64_REL14_BRNTAKEN
:
5068 case R_PPC64_REL14_BRTAKEN
:
5072 struct plt_entry
*ent
;
5074 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5075 if (ent
->addend
== rel
->r_addend
)
5079 if (ent
->plt
.refcount
> 0)
5080 ent
->plt
.refcount
-= 1;
5091 /* The maximum size of .sfpr. */
5092 #define SFPR_MAX (218*4)
5094 struct sfpr_def_parms
5096 const char name
[12];
5097 unsigned char lo
, hi
;
5098 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5099 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5102 /* Auto-generate _save*, _rest* functions in .sfpr. */
5105 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5107 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5109 size_t len
= strlen (parm
->name
);
5110 bfd_boolean writing
= FALSE
;
5113 memcpy (sym
, parm
->name
, len
);
5116 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5118 struct elf_link_hash_entry
*h
;
5120 sym
[len
+ 0] = i
/ 10 + '0';
5121 sym
[len
+ 1] = i
% 10 + '0';
5122 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5126 h
->root
.type
= bfd_link_hash_defined
;
5127 h
->root
.u
.def
.section
= htab
->sfpr
;
5128 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5131 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5133 if (htab
->sfpr
->contents
== NULL
)
5135 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5136 if (htab
->sfpr
->contents
== NULL
)
5142 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5144 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5146 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5147 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5155 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5157 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5162 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5164 p
= savegpr0 (abfd
, p
, r
);
5165 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5167 bfd_put_32 (abfd
, BLR
, p
);
5172 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5174 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5179 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5181 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5183 p
= restgpr0 (abfd
, p
, r
);
5184 bfd_put_32 (abfd
, MTLR_R0
, p
);
5188 p
= restgpr0 (abfd
, p
, 30);
5189 p
= restgpr0 (abfd
, p
, 31);
5191 bfd_put_32 (abfd
, BLR
, p
);
5196 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5198 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5203 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5205 p
= savegpr1 (abfd
, p
, r
);
5206 bfd_put_32 (abfd
, BLR
, p
);
5211 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5213 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5218 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5220 p
= restgpr1 (abfd
, p
, r
);
5221 bfd_put_32 (abfd
, BLR
, p
);
5226 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5228 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5233 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5235 p
= savefpr (abfd
, p
, r
);
5236 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5238 bfd_put_32 (abfd
, BLR
, p
);
5243 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5245 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5250 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5252 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5254 p
= restfpr (abfd
, p
, r
);
5255 bfd_put_32 (abfd
, MTLR_R0
, p
);
5259 p
= restfpr (abfd
, p
, 30);
5260 p
= restfpr (abfd
, p
, 31);
5262 bfd_put_32 (abfd
, BLR
, p
);
5267 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5269 p
= savefpr (abfd
, p
, r
);
5270 bfd_put_32 (abfd
, BLR
, p
);
5275 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5277 p
= restfpr (abfd
, p
, r
);
5278 bfd_put_32 (abfd
, BLR
, p
);
5283 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5285 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5287 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5292 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5294 p
= savevr (abfd
, p
, r
);
5295 bfd_put_32 (abfd
, BLR
, p
);
5300 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5302 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5304 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5309 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5311 p
= restvr (abfd
, p
, r
);
5312 bfd_put_32 (abfd
, BLR
, p
);
5316 /* Called via elf_link_hash_traverse to transfer dynamic linking
5317 information on function code symbol entries to their corresponding
5318 function descriptor symbol entries. */
5321 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5323 struct bfd_link_info
*info
;
5324 struct ppc_link_hash_table
*htab
;
5325 struct plt_entry
*ent
;
5326 struct ppc_link_hash_entry
*fh
;
5327 struct ppc_link_hash_entry
*fdh
;
5328 bfd_boolean force_local
;
5330 fh
= (struct ppc_link_hash_entry
*) h
;
5331 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5334 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5335 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5338 htab
= ppc_hash_table (info
);
5340 /* Resolve undefined references to dot-symbols as the value
5341 in the function descriptor, if we have one in a regular object.
5342 This is to satisfy cases like ".quad .foo". Calls to functions
5343 in dynamic objects are handled elsewhere. */
5344 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5345 && fh
->was_undefined
5346 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5347 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5348 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5349 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5350 fh
->oh
->elf
.root
.u
.def
.value
,
5351 &fh
->elf
.root
.u
.def
.section
,
5352 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5354 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5355 fh
->elf
.forced_local
= 1;
5358 /* If this is a function code symbol, transfer dynamic linking
5359 information to the function descriptor symbol. */
5363 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5364 if (ent
->plt
.refcount
> 0)
5367 || fh
->elf
.root
.root
.string
[0] != '.'
5368 || fh
->elf
.root
.root
.string
[1] == '\0')
5371 /* Find the corresponding function descriptor symbol. Create it
5372 as undefined if necessary. */
5374 fdh
= get_fdh (fh
, htab
);
5376 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5377 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5378 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5382 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5383 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5387 struct bfd_link_hash_entry
*bh
;
5389 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
5390 newsym
= bfd_make_empty_symbol (abfd
);
5391 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
5392 newsym
->section
= bfd_und_section_ptr
;
5394 newsym
->flags
= BSF_OBJECT
;
5395 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5396 newsym
->flags
|= BSF_WEAK
;
5398 bh
= &fdh
->elf
.root
;
5399 if ( !(_bfd_generic_link_add_one_symbol
5400 (info
, abfd
, newsym
->name
, newsym
->flags
,
5401 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
5405 fdh
= (struct ppc_link_hash_entry
*) bh
;
5406 fdh
->elf
.non_elf
= 0;
5408 fdh
->elf
.type
= STT_OBJECT
;
5412 && !fdh
->elf
.forced_local
5414 || fdh
->elf
.def_dynamic
5415 || fdh
->elf
.ref_dynamic
5416 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5417 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5419 if (fdh
->elf
.dynindx
== -1)
5420 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5422 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5423 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5424 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5425 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5426 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5428 struct plt_entry
**ep
= &fdh
->elf
.plt
.plist
;
5431 *ep
= fh
->elf
.plt
.plist
;
5432 fh
->elf
.plt
.plist
= NULL
;
5433 fdh
->elf
.needs_plt
= 1;
5435 fdh
->is_func_descriptor
= 1;
5440 /* Now that the info is on the function descriptor, clear the
5441 function code sym info. Any function code syms for which we
5442 don't have a definition in a regular file, we force local.
5443 This prevents a shared library from exporting syms that have
5444 been imported from another library. Function code syms that
5445 are really in the library we must leave global to prevent the
5446 linker dragging in a definition from a static library. */
5449 && (!fh
->elf
.def_regular
5451 || !fdh
->elf
.def_regular
5452 || fdh
->elf
.forced_local
));
5453 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5458 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5459 this hook to a) provide some gcc support functions, and b) transfer
5460 dynamic linking information gathered so far on function code symbol
5461 entries, to their corresponding function descriptor symbol entries. */
5464 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5465 struct bfd_link_info
*info
)
5467 struct ppc_link_hash_table
*htab
;
5469 const struct sfpr_def_parms funcs
[] =
5471 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5472 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5473 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5474 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5475 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5476 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5477 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5478 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5479 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5480 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5481 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5482 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5485 htab
= ppc_hash_table (info
);
5486 if (htab
->sfpr
== NULL
)
5487 /* We don't have any relocs. */
5490 /* Provide any missing _save* and _rest* functions. */
5491 htab
->sfpr
->size
= 0;
5492 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5493 if (!sfpr_define (info
, &funcs
[i
]))
5496 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5498 if (htab
->sfpr
->size
== 0)
5499 _bfd_strip_section_from_output (info
, htab
->sfpr
);
5504 /* Adjust a symbol defined by a dynamic object and referenced by a
5505 regular object. The current definition is in some section of the
5506 dynamic object, but we're not including those sections. We have to
5507 change the definition to something the rest of the link can
5511 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5512 struct elf_link_hash_entry
*h
)
5514 struct ppc_link_hash_table
*htab
;
5516 unsigned int power_of_two
;
5518 htab
= ppc_hash_table (info
);
5520 /* Deal with function syms. */
5521 if (h
->type
== STT_FUNC
5524 /* Clear procedure linkage table information for any symbol that
5525 won't need a .plt entry. */
5526 struct plt_entry
*ent
;
5527 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5528 if (ent
->plt
.refcount
> 0)
5531 || SYMBOL_CALLS_LOCAL (info
, h
)
5532 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5533 && h
->root
.type
== bfd_link_hash_undefweak
))
5535 h
->plt
.plist
= NULL
;
5540 h
->plt
.plist
= NULL
;
5542 /* If this is a weak symbol, and there is a real definition, the
5543 processor independent code will have arranged for us to see the
5544 real definition first, and we can just use the same value. */
5545 if (h
->u
.weakdef
!= NULL
)
5547 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5548 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5549 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5550 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5551 if (ELIMINATE_COPY_RELOCS
)
5552 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5556 /* If we are creating a shared library, we must presume that the
5557 only references to the symbol are via the global offset table.
5558 For such cases we need not do anything here; the relocations will
5559 be handled correctly by relocate_section. */
5563 /* If there are no references to this symbol that do not use the
5564 GOT, we don't need to generate a copy reloc. */
5565 if (!h
->non_got_ref
)
5568 if (ELIMINATE_COPY_RELOCS
)
5570 struct ppc_link_hash_entry
* eh
;
5571 struct ppc_dyn_relocs
*p
;
5573 eh
= (struct ppc_link_hash_entry
*) h
;
5574 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5576 s
= p
->sec
->output_section
;
5577 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5581 /* If we didn't find any dynamic relocs in read-only sections, then
5582 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5590 if (h
->plt
.plist
!= NULL
)
5592 /* We should never get here, but unfortunately there are versions
5593 of gcc out there that improperly (for this ABI) put initialized
5594 function pointers, vtable refs and suchlike in read-only
5595 sections. Allow them to proceed, but warn that this might
5596 break at runtime. */
5597 (*_bfd_error_handler
)
5598 (_("copy reloc against `%s' requires lazy plt linking; "
5599 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5600 h
->root
.root
.string
);
5603 /* This is a reference to a symbol defined by a dynamic object which
5604 is not a function. */
5606 /* We must allocate the symbol in our .dynbss section, which will
5607 become part of the .bss section of the executable. There will be
5608 an entry for this symbol in the .dynsym section. The dynamic
5609 object will contain position independent code, so all references
5610 from the dynamic object to this symbol will go through the global
5611 offset table. The dynamic linker will use the .dynsym entry to
5612 determine the address it must put in the global offset table, so
5613 both the dynamic object and the regular object will refer to the
5614 same memory location for the variable. */
5616 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5617 to copy the initial value out of the dynamic object and into the
5618 runtime process image. We need to remember the offset into the
5619 .rela.bss section we are going to use. */
5620 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5622 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5626 /* We need to figure out the alignment required for this symbol. I
5627 have no idea how ELF linkers handle this. */
5628 power_of_two
= bfd_log2 (h
->size
);
5629 if (power_of_two
> 4)
5632 /* Apply the required alignment. */
5634 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5635 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5637 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5641 /* Define the symbol as being at this point in the section. */
5642 h
->root
.u
.def
.section
= s
;
5643 h
->root
.u
.def
.value
= s
->size
;
5645 /* Increment the section size to make room for the symbol. */
5651 /* If given a function descriptor symbol, hide both the function code
5652 sym and the descriptor. */
5654 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5655 struct elf_link_hash_entry
*h
,
5656 bfd_boolean force_local
)
5658 struct ppc_link_hash_entry
*eh
;
5659 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5661 eh
= (struct ppc_link_hash_entry
*) h
;
5662 if (eh
->is_func_descriptor
)
5664 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5669 struct ppc_link_hash_table
*htab
;
5672 /* We aren't supposed to use alloca in BFD because on
5673 systems which do not have alloca the version in libiberty
5674 calls xmalloc, which might cause the program to crash
5675 when it runs out of memory. This function doesn't have a
5676 return status, so there's no way to gracefully return an
5677 error. So cheat. We know that string[-1] can be safely
5678 accessed; It's either a string in an ELF string table,
5679 or allocated in an objalloc structure. */
5681 p
= eh
->elf
.root
.root
.string
- 1;
5684 htab
= ppc_hash_table (info
);
5685 fh
= (struct ppc_link_hash_entry
*)
5686 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5689 /* Unfortunately, if it so happens that the string we were
5690 looking for was allocated immediately before this string,
5691 then we overwrote the string terminator. That's the only
5692 reason the lookup should fail. */
5695 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5696 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5698 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5699 fh
= (struct ppc_link_hash_entry
*)
5700 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5709 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5714 get_sym_h (struct elf_link_hash_entry
**hp
,
5715 Elf_Internal_Sym
**symp
,
5718 Elf_Internal_Sym
**locsymsp
,
5719 unsigned long r_symndx
,
5722 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5724 if (r_symndx
>= symtab_hdr
->sh_info
)
5726 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5727 struct elf_link_hash_entry
*h
;
5729 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5730 while (h
->root
.type
== bfd_link_hash_indirect
5731 || h
->root
.type
== bfd_link_hash_warning
)
5732 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5740 if (symsecp
!= NULL
)
5742 asection
*symsec
= NULL
;
5743 if (h
->root
.type
== bfd_link_hash_defined
5744 || h
->root
.type
== bfd_link_hash_defweak
)
5745 symsec
= h
->root
.u
.def
.section
;
5749 if (tls_maskp
!= NULL
)
5751 struct ppc_link_hash_entry
*eh
;
5753 eh
= (struct ppc_link_hash_entry
*) h
;
5754 *tls_maskp
= &eh
->tls_mask
;
5759 Elf_Internal_Sym
*sym
;
5760 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5762 if (locsyms
== NULL
)
5764 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5765 if (locsyms
== NULL
)
5766 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5767 symtab_hdr
->sh_info
,
5768 0, NULL
, NULL
, NULL
);
5769 if (locsyms
== NULL
)
5771 *locsymsp
= locsyms
;
5773 sym
= locsyms
+ r_symndx
;
5781 if (symsecp
!= NULL
)
5783 asection
*symsec
= NULL
;
5784 if ((sym
->st_shndx
!= SHN_UNDEF
5785 && sym
->st_shndx
< SHN_LORESERVE
)
5786 || sym
->st_shndx
> SHN_HIRESERVE
)
5787 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5791 if (tls_maskp
!= NULL
)
5793 struct got_entry
**lgot_ents
;
5797 lgot_ents
= elf_local_got_ents (ibfd
);
5798 if (lgot_ents
!= NULL
)
5800 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5801 tls_mask
= &lgot_masks
[r_symndx
];
5803 *tls_maskp
= tls_mask
;
5809 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5810 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5811 type suitable for optimization, and 1 otherwise. */
5814 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5815 Elf_Internal_Sym
**locsymsp
,
5816 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5818 unsigned long r_symndx
;
5820 struct elf_link_hash_entry
*h
;
5821 Elf_Internal_Sym
*sym
;
5825 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5826 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5829 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5831 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5834 /* Look inside a TOC section too. */
5837 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5838 off
= h
->root
.u
.def
.value
;
5841 off
= sym
->st_value
;
5842 off
+= rel
->r_addend
;
5843 BFD_ASSERT (off
% 8 == 0);
5844 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5845 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5846 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5848 if (toc_symndx
!= NULL
)
5849 *toc_symndx
= r_symndx
;
5851 || ((h
->root
.type
== bfd_link_hash_defined
5852 || h
->root
.type
== bfd_link_hash_defweak
)
5853 && !h
->def_dynamic
))
5854 && (next_r
== -1 || next_r
== -2))
5859 /* Adjust all global syms defined in opd sections. In gcc generated
5860 code for the old ABI, these will already have been done. */
5863 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5865 struct ppc_link_hash_entry
*eh
;
5869 if (h
->root
.type
== bfd_link_hash_indirect
)
5872 if (h
->root
.type
== bfd_link_hash_warning
)
5873 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5875 if (h
->root
.type
!= bfd_link_hash_defined
5876 && h
->root
.type
!= bfd_link_hash_defweak
)
5879 eh
= (struct ppc_link_hash_entry
*) h
;
5880 if (eh
->adjust_done
)
5883 sym_sec
= eh
->elf
.root
.u
.def
.section
;
5884 opd_adjust
= get_opd_info (sym_sec
);
5885 if (opd_adjust
!= NULL
)
5887 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
5890 /* This entry has been deleted. */
5891 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
5894 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
5895 if (elf_discarded_section (dsec
))
5897 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
5901 eh
->elf
.root
.u
.def
.value
= 0;
5902 eh
->elf
.root
.u
.def
.section
= dsec
;
5905 eh
->elf
.root
.u
.def
.value
+= adjust
;
5906 eh
->adjust_done
= 1;
5911 /* Remove unused Official Procedure Descriptor entries. Currently we
5912 only remove those associated with functions in discarded link-once
5913 sections, or weakly defined functions that have been overridden. It
5914 would be possible to remove many more entries for statically linked
5918 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
5919 bfd_boolean non_overlapping
)
5922 bfd_boolean some_edited
= FALSE
;
5923 asection
*need_pad
= NULL
;
5925 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5928 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5929 Elf_Internal_Shdr
*symtab_hdr
;
5930 Elf_Internal_Sym
*local_syms
;
5931 struct elf_link_hash_entry
**sym_hashes
;
5935 bfd_boolean need_edit
, add_aux_fields
;
5936 bfd_size_type cnt_16b
= 0;
5938 sec
= bfd_get_section_by_name (ibfd
, ".opd");
5942 amt
= sec
->size
* sizeof (long) / 8;
5943 opd_adjust
= get_opd_info (sec
);
5944 if (opd_adjust
== NULL
)
5946 /* check_relocs hasn't been called. Must be a ld -r link
5947 or --just-symbols object. */
5948 opd_adjust
= bfd_zalloc (obfd
, amt
);
5949 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
5951 memset (opd_adjust
, 0, amt
);
5953 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
5956 if (sec
->output_section
== bfd_abs_section_ptr
)
5959 /* Look through the section relocs. */
5960 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
5964 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5965 sym_hashes
= elf_sym_hashes (ibfd
);
5967 /* Read the relocations. */
5968 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5970 if (relstart
== NULL
)
5973 /* First run through the relocs to check they are sane, and to
5974 determine whether we need to edit this opd section. */
5978 relend
= relstart
+ sec
->reloc_count
;
5979 for (rel
= relstart
; rel
< relend
; )
5981 enum elf_ppc64_reloc_type r_type
;
5982 unsigned long r_symndx
;
5984 struct elf_link_hash_entry
*h
;
5985 Elf_Internal_Sym
*sym
;
5987 /* .opd contains a regular array of 16 or 24 byte entries. We're
5988 only interested in the reloc pointing to a function entry
5990 if (rel
->r_offset
!= offset
5991 || rel
+ 1 >= relend
5992 || (rel
+ 1)->r_offset
!= offset
+ 8)
5994 /* If someone messes with .opd alignment then after a
5995 "ld -r" we might have padding in the middle of .opd.
5996 Also, there's nothing to prevent someone putting
5997 something silly in .opd with the assembler. No .opd
5998 optimization for them! */
6000 (*_bfd_error_handler
)
6001 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6006 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6007 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6009 (*_bfd_error_handler
)
6010 (_("%B: unexpected reloc type %u in .opd section"),
6016 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6017 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6021 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6023 const char *sym_name
;
6025 sym_name
= h
->root
.root
.string
;
6027 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
);
6029 (*_bfd_error_handler
)
6030 (_("%B: undefined sym `%s' in .opd section"),
6036 /* opd entries are always for functions defined in the
6037 current input bfd. If the symbol isn't defined in the
6038 input bfd, then we won't be using the function in this
6039 bfd; It must be defined in a linkonce section in another
6040 bfd, or is weak. It's also possible that we are
6041 discarding the function due to a linker script /DISCARD/,
6042 which we test for via the output_section. */
6043 if (sym_sec
->owner
!= ibfd
6044 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6049 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6051 if (sec
->size
== offset
+ 24)
6056 if (rel
== relend
&& sec
->size
== offset
+ 16)
6064 if (rel
->r_offset
== offset
+ 24)
6066 else if (rel
->r_offset
!= offset
+ 16)
6068 else if (rel
+ 1 < relend
6069 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6070 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6075 else if (rel
+ 2 < relend
6076 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6077 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6086 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6088 if (need_edit
|| add_aux_fields
)
6090 Elf_Internal_Rela
*write_rel
;
6091 bfd_byte
*rptr
, *wptr
;
6092 bfd_byte
*new_contents
= NULL
;
6096 /* This seems a waste of time as input .opd sections are all
6097 zeros as generated by gcc, but I suppose there's no reason
6098 this will always be so. We might start putting something in
6099 the third word of .opd entries. */
6100 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6103 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6108 if (local_syms
!= NULL
6109 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6111 if (elf_section_data (sec
)->relocs
!= relstart
)
6115 sec
->contents
= loc
;
6116 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6119 elf_section_data (sec
)->relocs
= relstart
;
6121 wptr
= sec
->contents
;
6122 rptr
= sec
->contents
;
6123 new_contents
= sec
->contents
;
6127 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6128 if (new_contents
== NULL
)
6131 wptr
= new_contents
;
6134 write_rel
= relstart
;
6138 for (rel
= relstart
; rel
< relend
; rel
++)
6140 unsigned long r_symndx
;
6142 struct elf_link_hash_entry
*h
;
6143 Elf_Internal_Sym
*sym
;
6145 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6146 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6150 if (rel
->r_offset
== offset
)
6152 struct ppc_link_hash_entry
*fdh
= NULL
;
6154 /* See if the .opd entry is full 24 byte or
6155 16 byte (with fd_aux entry overlapped with next
6158 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6159 || (rel
+ 3 < relend
6160 && rel
[2].r_offset
== offset
+ 16
6161 && rel
[3].r_offset
== offset
+ 24
6162 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6163 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6167 && h
->root
.root
.string
[0] == '.')
6168 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6169 ppc_hash_table (info
));
6171 skip
= (sym_sec
->owner
!= ibfd
6172 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6175 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6177 /* Arrange for the function descriptor sym
6179 fdh
->elf
.root
.u
.def
.value
= 0;
6180 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6182 opd_adjust
[rel
->r_offset
/ 8] = -1;
6186 /* We'll be keeping this opd entry. */
6190 /* Redefine the function descriptor symbol to
6191 this location in the opd section. It is
6192 necessary to update the value here rather
6193 than using an array of adjustments as we do
6194 for local symbols, because various places
6195 in the generic ELF code use the value
6196 stored in u.def.value. */
6197 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6198 fdh
->adjust_done
= 1;
6201 /* Local syms are a bit tricky. We could
6202 tweak them as they can be cached, but
6203 we'd need to look through the local syms
6204 for the function descriptor sym which we
6205 don't have at the moment. So keep an
6206 array of adjustments. */
6207 opd_adjust
[rel
->r_offset
/ 8]
6208 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6211 memcpy (wptr
, rptr
, opd_ent_size
);
6212 wptr
+= opd_ent_size
;
6213 if (add_aux_fields
&& opd_ent_size
== 16)
6215 memset (wptr
, '\0', 8);
6219 rptr
+= opd_ent_size
;
6220 offset
+= opd_ent_size
;
6225 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
6228 /* We won't be needing dynamic relocs here. */
6229 struct ppc_dyn_relocs
**pp
;
6230 struct ppc_dyn_relocs
*p
;
6233 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6234 else if (sym_sec
!= NULL
)
6235 pp
= ((struct ppc_dyn_relocs
**)
6236 &elf_section_data (sym_sec
)->local_dynrel
);
6238 pp
= ((struct ppc_dyn_relocs
**)
6239 &elf_section_data (sec
)->local_dynrel
);
6240 while ((p
= *pp
) != NULL
)
6255 /* We need to adjust any reloc offsets to point to the
6256 new opd entries. While we're at it, we may as well
6257 remove redundant relocs. */
6258 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6259 if (write_rel
!= rel
)
6260 memcpy (write_rel
, rel
, sizeof (*rel
));
6265 sec
->size
= wptr
- new_contents
;
6266 sec
->reloc_count
= write_rel
- relstart
;
6269 free (sec
->contents
);
6270 sec
->contents
= new_contents
;
6273 /* Fudge the size too, as this is used later in
6274 elf_bfd_final_link if we are emitting relocs. */
6275 elf_section_data (sec
)->rel_hdr
.sh_size
6276 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6277 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6280 else if (elf_section_data (sec
)->relocs
!= relstart
)
6283 if (local_syms
!= NULL
6284 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6286 if (!info
->keep_memory
)
6289 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6294 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6296 /* If we are doing a final link and the last .opd entry is just 16 byte
6297 long, add a 8 byte padding after it. */
6298 if (need_pad
!= NULL
&& !info
->relocatable
)
6302 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6304 BFD_ASSERT (need_pad
->size
> 0);
6306 p
= bfd_malloc (need_pad
->size
+ 8);
6310 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6311 p
, 0, need_pad
->size
))
6314 need_pad
->contents
= p
;
6315 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6319 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6323 need_pad
->contents
= p
;
6326 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6327 need_pad
->size
+= 8;
6333 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6336 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6338 struct ppc_link_hash_table
*htab
;
6340 htab
= ppc_hash_table (info
);
6341 if (htab
->tls_get_addr
!= NULL
)
6343 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6345 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6346 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6347 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6349 htab
->tls_get_addr
= h
;
6351 if (htab
->tls_get_addr_fd
== NULL
6353 && h
->oh
->is_func_descriptor
)
6354 htab
->tls_get_addr_fd
= h
->oh
;
6357 if (htab
->tls_get_addr_fd
!= NULL
)
6359 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6361 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6362 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6363 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6365 htab
->tls_get_addr_fd
= h
;
6368 return _bfd_elf_tls_setup (obfd
, info
);
6371 /* Run through all the TLS relocs looking for optimization
6372 opportunities. The linker has been hacked (see ppc64elf.em) to do
6373 a preliminary section layout so that we know the TLS segment
6374 offsets. We can't optimize earlier because some optimizations need
6375 to know the tp offset, and we need to optimize before allocating
6376 dynamic relocations. */
6379 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6383 struct ppc_link_hash_table
*htab
;
6385 if (info
->relocatable
|| info
->shared
)
6388 htab
= ppc_hash_table (info
);
6389 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6391 Elf_Internal_Sym
*locsyms
= NULL
;
6393 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6394 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6396 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6397 int expecting_tls_get_addr
;
6399 /* Read the relocations. */
6400 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6402 if (relstart
== NULL
)
6405 expecting_tls_get_addr
= 0;
6406 relend
= relstart
+ sec
->reloc_count
;
6407 for (rel
= relstart
; rel
< relend
; rel
++)
6409 enum elf_ppc64_reloc_type r_type
;
6410 unsigned long r_symndx
;
6411 struct elf_link_hash_entry
*h
;
6412 Elf_Internal_Sym
*sym
;
6415 char tls_set
, tls_clear
, tls_type
= 0;
6417 bfd_boolean ok_tprel
, is_local
;
6419 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6420 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6424 if (elf_section_data (sec
)->relocs
!= relstart
)
6427 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6428 != (unsigned char *) locsyms
))
6435 if (h
->root
.type
!= bfd_link_hash_defined
6436 && h
->root
.type
!= bfd_link_hash_defweak
)
6438 value
= h
->root
.u
.def
.value
;
6441 /* Symbols referenced by TLS relocs must be of type
6442 STT_TLS. So no need for .opd local sym adjust. */
6443 value
= sym
->st_value
;
6451 value
+= sym_sec
->output_offset
;
6452 value
+= sym_sec
->output_section
->vma
;
6453 value
-= htab
->elf
.tls_sec
->vma
;
6454 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6455 < (bfd_vma
) 1 << 32);
6458 r_type
= ELF64_R_TYPE (rel
->r_info
);
6461 case R_PPC64_GOT_TLSLD16
:
6462 case R_PPC64_GOT_TLSLD16_LO
:
6463 case R_PPC64_GOT_TLSLD16_HI
:
6464 case R_PPC64_GOT_TLSLD16_HA
:
6465 /* These relocs should never be against a symbol
6466 defined in a shared lib. Leave them alone if
6467 that turns out to be the case. */
6468 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6475 tls_type
= TLS_TLS
| TLS_LD
;
6476 expecting_tls_get_addr
= 1;
6479 case R_PPC64_GOT_TLSGD16
:
6480 case R_PPC64_GOT_TLSGD16_LO
:
6481 case R_PPC64_GOT_TLSGD16_HI
:
6482 case R_PPC64_GOT_TLSGD16_HA
:
6488 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6490 tls_type
= TLS_TLS
| TLS_GD
;
6491 expecting_tls_get_addr
= 1;
6494 case R_PPC64_GOT_TPREL16_DS
:
6495 case R_PPC64_GOT_TPREL16_LO_DS
:
6496 case R_PPC64_GOT_TPREL16_HI
:
6497 case R_PPC64_GOT_TPREL16_HA
:
6498 expecting_tls_get_addr
= 0;
6503 tls_clear
= TLS_TPREL
;
6504 tls_type
= TLS_TLS
| TLS_TPREL
;
6511 case R_PPC64_REL14_BRTAKEN
:
6512 case R_PPC64_REL14_BRNTAKEN
:
6515 && (h
== &htab
->tls_get_addr
->elf
6516 || h
== &htab
->tls_get_addr_fd
->elf
))
6518 if (!expecting_tls_get_addr
6520 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6522 || (ELF64_R_TYPE (rel
[-1].r_info
)
6523 == R_PPC64_TOC16_LO
)))
6525 /* Check for toc tls entries. */
6529 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6533 if (toc_tls
!= NULL
)
6534 expecting_tls_get_addr
= retval
> 1;
6537 if (expecting_tls_get_addr
)
6539 struct plt_entry
*ent
;
6540 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6541 if (ent
->addend
== 0)
6543 if (ent
->plt
.refcount
> 0)
6544 ent
->plt
.refcount
-= 1;
6549 expecting_tls_get_addr
= 0;
6552 case R_PPC64_TPREL64
:
6553 expecting_tls_get_addr
= 0;
6557 tls_set
= TLS_EXPLICIT
;
6558 tls_clear
= TLS_TPREL
;
6564 case R_PPC64_DTPMOD64
:
6565 expecting_tls_get_addr
= 0;
6566 if (rel
+ 1 < relend
6568 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
6569 && rel
[1].r_offset
== rel
->r_offset
+ 8)
6573 tls_set
= TLS_EXPLICIT
| TLS_GD
;
6576 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
6585 tls_set
= TLS_EXPLICIT
;
6591 expecting_tls_get_addr
= 0;
6595 if ((tls_set
& TLS_EXPLICIT
) == 0)
6597 struct got_entry
*ent
;
6599 /* Adjust got entry for this reloc. */
6603 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
6605 for (; ent
!= NULL
; ent
= ent
->next
)
6606 if (ent
->addend
== rel
->r_addend
6607 && ent
->owner
== ibfd
6608 && ent
->tls_type
== tls_type
)
6615 /* We managed to get rid of a got entry. */
6616 if (ent
->got
.refcount
> 0)
6617 ent
->got
.refcount
-= 1;
6622 struct ppc_link_hash_entry
* eh
;
6623 struct ppc_dyn_relocs
**pp
;
6624 struct ppc_dyn_relocs
*p
;
6626 /* Adjust dynamic relocs. */
6627 eh
= (struct ppc_link_hash_entry
*) h
;
6628 for (pp
= &eh
->dyn_relocs
;
6633 /* If we got rid of a DTPMOD/DTPREL reloc
6634 pair then we'll lose one or two dyn
6636 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
6645 *tls_mask
|= tls_set
;
6646 *tls_mask
&= ~tls_clear
;
6649 if (elf_section_data (sec
)->relocs
!= relstart
)
6654 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6655 != (unsigned char *) locsyms
))
6657 if (!info
->keep_memory
)
6660 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
6666 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6667 the values of any global symbols in a toc section that has been
6668 edited. Globals in toc sections should be a rarity, so this function
6669 sets a flag if any are found in toc sections other than the one just
6670 edited, so that futher hash table traversals can be avoided. */
6672 struct adjust_toc_info
6675 unsigned long *skip
;
6676 bfd_boolean global_toc_syms
;
6680 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
6682 struct ppc_link_hash_entry
*eh
;
6683 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
6685 if (h
->root
.type
== bfd_link_hash_indirect
)
6688 if (h
->root
.type
== bfd_link_hash_warning
)
6689 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6691 if (h
->root
.type
!= bfd_link_hash_defined
6692 && h
->root
.type
!= bfd_link_hash_defweak
)
6695 eh
= (struct ppc_link_hash_entry
*) h
;
6696 if (eh
->adjust_done
)
6699 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
6701 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
6702 if (skip
!= (unsigned long) -1)
6703 eh
->elf
.root
.u
.def
.value
-= skip
;
6706 (*_bfd_error_handler
)
6707 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
6708 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
6709 eh
->elf
.root
.u
.def
.value
= 0;
6711 eh
->adjust_done
= 1;
6713 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
6714 toc_inf
->global_toc_syms
= TRUE
;
6719 /* Examine all relocs referencing .toc sections in order to remove
6720 unused .toc entries. */
6723 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6726 struct adjust_toc_info toc_inf
;
6728 toc_inf
.global_toc_syms
= TRUE
;
6729 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6731 asection
*toc
, *sec
;
6732 Elf_Internal_Shdr
*symtab_hdr
;
6733 Elf_Internal_Sym
*local_syms
;
6734 struct elf_link_hash_entry
**sym_hashes
;
6735 Elf_Internal_Rela
*relstart
, *rel
, *wrel
;
6736 unsigned long *skip
, *drop
;
6737 unsigned char *used
;
6738 unsigned char *keep
, last
, some_unused
;
6740 toc
= bfd_get_section_by_name (ibfd
, ".toc");
6742 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
6743 || elf_discarded_section (toc
))
6747 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6748 sym_hashes
= elf_sym_hashes (ibfd
);
6750 /* Look at sections dropped from the final link. */
6753 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6755 if (sec
->reloc_count
== 0
6756 || !elf_discarded_section (sec
)
6757 || get_opd_info (sec
)
6758 || (sec
->flags
& SEC_ALLOC
) == 0
6759 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6762 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
6763 if (relstart
== NULL
)
6766 /* Run through the relocs to see which toc entries might be
6768 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6770 enum elf_ppc64_reloc_type r_type
;
6771 unsigned long r_symndx
;
6773 struct elf_link_hash_entry
*h
;
6774 Elf_Internal_Sym
*sym
;
6777 r_type
= ELF64_R_TYPE (rel
->r_info
);
6784 case R_PPC64_TOC16_LO
:
6785 case R_PPC64_TOC16_HI
:
6786 case R_PPC64_TOC16_HA
:
6787 case R_PPC64_TOC16_DS
:
6788 case R_PPC64_TOC16_LO_DS
:
6792 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6793 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6801 val
= h
->root
.u
.def
.value
;
6803 val
= sym
->st_value
;
6804 val
+= rel
->r_addend
;
6806 if (val
>= toc
->size
)
6809 /* Anything in the toc ought to be aligned to 8 bytes.
6810 If not, don't mark as unused. */
6816 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
6824 if (elf_section_data (sec
)->relocs
!= relstart
)
6831 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
6835 if (local_syms
!= NULL
6836 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6840 && elf_section_data (sec
)->relocs
!= relstart
)
6847 /* Now check all kept sections that might reference the toc. */
6848 for (sec
= ibfd
->sections
;
6850 /* Check the toc itself last. */
6851 sec
= (sec
== toc
? NULL
6852 : sec
->next
== toc
&& sec
->next
->next
? sec
->next
->next
6853 : sec
->next
== NULL
? toc
6858 if (sec
->reloc_count
== 0
6859 || elf_discarded_section (sec
)
6860 || get_opd_info (sec
)
6861 || (sec
->flags
& SEC_ALLOC
) == 0
6862 || (sec
->flags
& SEC_DEBUGGING
) != 0)
6865 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
6866 if (relstart
== NULL
)
6869 /* Mark toc entries referenced as used. */
6872 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
6874 enum elf_ppc64_reloc_type r_type
;
6875 unsigned long r_symndx
;
6877 struct elf_link_hash_entry
*h
;
6878 Elf_Internal_Sym
*sym
;
6881 r_type
= ELF64_R_TYPE (rel
->r_info
);
6885 case R_PPC64_TOC16_LO
:
6886 case R_PPC64_TOC16_HI
:
6887 case R_PPC64_TOC16_HA
:
6888 case R_PPC64_TOC16_DS
:
6889 case R_PPC64_TOC16_LO_DS
:
6890 /* In case we're taking addresses of toc entries. */
6891 case R_PPC64_ADDR64
:
6898 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6899 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6910 val
= h
->root
.u
.def
.value
;
6912 val
= sym
->st_value
;
6913 val
+= rel
->r_addend
;
6915 if (val
>= toc
->size
)
6918 /* For the toc section, we only mark as used if
6919 this entry itself isn't unused. */
6922 && (used
[rel
->r_offset
>> 3]
6923 || !skip
[rel
->r_offset
>> 3]))
6924 /* Do all the relocs again, to catch reference
6933 /* Merge the used and skip arrays. Assume that TOC
6934 doublewords not appearing as either used or unused belong
6935 to to an entry more than one doubleword in size. */
6936 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
6937 drop
< skip
+ (toc
->size
+ 7) / 8;
6958 bfd_byte
*contents
, *src
;
6961 /* Shuffle the toc contents, and at the same time convert the
6962 skip array from booleans into offsets. */
6963 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
6966 elf_section_data (toc
)->this_hdr
.contents
= contents
;
6968 for (src
= contents
, off
= 0, drop
= skip
;
6969 src
< contents
+ toc
->size
;
6974 *drop
= (unsigned long) -1;
6980 memcpy (src
- off
, src
, 8);
6983 toc
->rawsize
= toc
->size
;
6984 toc
->size
= src
- contents
- off
;
6986 /* Read toc relocs. */
6987 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
, TRUE
);
6988 if (relstart
== NULL
)
6991 /* Remove unused toc relocs, and adjust those we keep. */
6993 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
6994 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
6996 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
6997 wrel
->r_info
= rel
->r_info
;
6998 wrel
->r_addend
= rel
->r_addend
;
7001 toc
->reloc_count
= wrel
- relstart
;
7002 elf_section_data (toc
)->rel_hdr
.sh_size
7003 = toc
->reloc_count
* elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7004 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7006 /* Adjust addends for relocs against the toc section sym. */
7007 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7009 if (sec
->reloc_count
== 0
7010 || elf_discarded_section (sec
))
7013 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7015 if (relstart
== NULL
)
7018 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7020 enum elf_ppc64_reloc_type r_type
;
7021 unsigned long r_symndx
;
7023 struct elf_link_hash_entry
*h
;
7024 Elf_Internal_Sym
*sym
;
7026 r_type
= ELF64_R_TYPE (rel
->r_info
);
7033 case R_PPC64_TOC16_LO
:
7034 case R_PPC64_TOC16_HI
:
7035 case R_PPC64_TOC16_HA
:
7036 case R_PPC64_TOC16_DS
:
7037 case R_PPC64_TOC16_LO_DS
:
7038 case R_PPC64_ADDR64
:
7042 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7043 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7047 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7050 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7054 /* We shouldn't have local or global symbols defined in the TOC,
7055 but handle them anyway. */
7056 if (local_syms
!= NULL
)
7058 Elf_Internal_Sym
*sym
;
7060 for (sym
= local_syms
;
7061 sym
< local_syms
+ symtab_hdr
->sh_info
;
7063 if (sym
->st_shndx
!= SHN_UNDEF
7064 && (sym
->st_shndx
< SHN_LORESERVE
7065 || sym
->st_shndx
> SHN_HIRESERVE
)
7066 && sym
->st_value
!= 0
7067 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7069 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7070 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7073 (*_bfd_error_handler
)
7074 (_("%s defined in removed toc entry"),
7075 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
));
7077 sym
->st_shndx
= SHN_ABS
;
7079 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7083 /* Finally, adjust any global syms defined in the toc. */
7084 if (toc_inf
.global_toc_syms
)
7087 toc_inf
.skip
= skip
;
7088 toc_inf
.global_toc_syms
= FALSE
;
7089 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7094 if (local_syms
!= NULL
7095 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7097 if (!info
->keep_memory
)
7100 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7108 /* Allocate space in .plt, .got and associated reloc sections for
7112 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7114 struct bfd_link_info
*info
;
7115 struct ppc_link_hash_table
*htab
;
7117 struct ppc_link_hash_entry
*eh
;
7118 struct ppc_dyn_relocs
*p
;
7119 struct got_entry
*gent
;
7121 if (h
->root
.type
== bfd_link_hash_indirect
)
7124 if (h
->root
.type
== bfd_link_hash_warning
)
7125 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7127 info
= (struct bfd_link_info
*) inf
;
7128 htab
= ppc_hash_table (info
);
7130 if (htab
->elf
.dynamic_sections_created
7132 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7134 struct plt_entry
*pent
;
7135 bfd_boolean doneone
= FALSE
;
7136 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7137 if (pent
->plt
.refcount
> 0)
7139 /* If this is the first .plt entry, make room for the special
7143 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7145 pent
->plt
.offset
= s
->size
;
7147 /* Make room for this entry. */
7148 s
->size
+= PLT_ENTRY_SIZE
;
7150 /* Make room for the .glink code. */
7153 s
->size
+= GLINK_CALL_STUB_SIZE
;
7154 /* We need bigger stubs past index 32767. */
7155 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7159 /* We also need to make an entry in the .rela.plt section. */
7161 s
->size
+= sizeof (Elf64_External_Rela
);
7165 pent
->plt
.offset
= (bfd_vma
) -1;
7168 h
->plt
.plist
= NULL
;
7174 h
->plt
.plist
= NULL
;
7178 eh
= (struct ppc_link_hash_entry
*) h
;
7179 /* Run through the TLS GD got entries first if we're changing them
7181 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7182 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7183 if (gent
->got
.refcount
> 0
7184 && (gent
->tls_type
& TLS_GD
) != 0)
7186 /* This was a GD entry that has been converted to TPREL. If
7187 there happens to be a TPREL entry we can use that one. */
7188 struct got_entry
*ent
;
7189 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7190 if (ent
->got
.refcount
> 0
7191 && (ent
->tls_type
& TLS_TPREL
) != 0
7192 && ent
->addend
== gent
->addend
7193 && ent
->owner
== gent
->owner
)
7195 gent
->got
.refcount
= 0;
7199 /* If not, then we'll be using our own TPREL entry. */
7200 if (gent
->got
.refcount
!= 0)
7201 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7204 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7205 if (gent
->got
.refcount
> 0)
7209 /* Make sure this symbol is output as a dynamic symbol.
7210 Undefined weak syms won't yet be marked as dynamic,
7211 nor will all TLS symbols. */
7212 if (h
->dynindx
== -1
7213 && !h
->forced_local
)
7215 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7219 if ((gent
->tls_type
& TLS_LD
) != 0
7222 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7226 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7227 gent
->got
.offset
= s
->size
;
7229 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7230 dyn
= htab
->elf
.dynamic_sections_created
;
7232 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7233 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7234 || h
->root
.type
!= bfd_link_hash_undefweak
))
7235 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7236 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7237 ? 2 * sizeof (Elf64_External_Rela
)
7238 : sizeof (Elf64_External_Rela
));
7241 gent
->got
.offset
= (bfd_vma
) -1;
7243 if (eh
->dyn_relocs
== NULL
)
7246 /* In the shared -Bsymbolic case, discard space allocated for
7247 dynamic pc-relative relocs against symbols which turn out to be
7248 defined in regular objects. For the normal shared case, discard
7249 space for relocs that have become local due to symbol visibility
7254 /* Relocs that use pc_count are those that appear on a call insn,
7255 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7256 generated via assembly. We want calls to protected symbols to
7257 resolve directly to the function rather than going via the plt.
7258 If people want function pointer comparisons to work as expected
7259 then they should avoid writing weird assembly. */
7260 if (SYMBOL_CALLS_LOCAL (info
, h
))
7262 struct ppc_dyn_relocs
**pp
;
7264 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7266 p
->count
-= p
->pc_count
;
7275 /* Also discard relocs on undefined weak syms with non-default
7277 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7278 && h
->root
.type
== bfd_link_hash_undefweak
)
7279 eh
->dyn_relocs
= NULL
;
7281 else if (ELIMINATE_COPY_RELOCS
)
7283 /* For the non-shared case, discard space for relocs against
7284 symbols which turn out to need copy relocs or are not
7291 /* Make sure this symbol is output as a dynamic symbol.
7292 Undefined weak syms won't yet be marked as dynamic. */
7293 if (h
->dynindx
== -1
7294 && !h
->forced_local
)
7296 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7300 /* If that succeeded, we know we'll be keeping all the
7302 if (h
->dynindx
!= -1)
7306 eh
->dyn_relocs
= NULL
;
7311 /* Finally, allocate space. */
7312 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7314 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7315 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7321 /* Find any dynamic relocs that apply to read-only sections. */
7324 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7326 struct ppc_link_hash_entry
*eh
;
7327 struct ppc_dyn_relocs
*p
;
7329 if (h
->root
.type
== bfd_link_hash_warning
)
7330 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7332 eh
= (struct ppc_link_hash_entry
*) h
;
7333 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7335 asection
*s
= p
->sec
->output_section
;
7337 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7339 struct bfd_link_info
*info
= inf
;
7341 info
->flags
|= DF_TEXTREL
;
7343 /* Not an error, just cut short the traversal. */
7350 /* Set the sizes of the dynamic sections. */
7353 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7354 struct bfd_link_info
*info
)
7356 struct ppc_link_hash_table
*htab
;
7362 htab
= ppc_hash_table (info
);
7363 dynobj
= htab
->elf
.dynobj
;
7367 if (htab
->elf
.dynamic_sections_created
)
7369 /* Set the contents of the .interp section to the interpreter. */
7370 if (info
->executable
)
7372 s
= bfd_get_section_by_name (dynobj
, ".interp");
7375 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7376 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7380 /* Set up .got offsets for local syms, and space for local dynamic
7382 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7384 struct got_entry
**lgot_ents
;
7385 struct got_entry
**end_lgot_ents
;
7387 bfd_size_type locsymcount
;
7388 Elf_Internal_Shdr
*symtab_hdr
;
7391 if (!is_ppc64_elf_target (ibfd
->xvec
))
7394 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7396 s
= ppc64_elf_tdata (ibfd
)->got
;
7397 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7401 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7402 srel
->size
+= sizeof (Elf64_External_Rela
);
7406 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7408 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7410 struct ppc_dyn_relocs
*p
;
7412 for (p
= *((struct ppc_dyn_relocs
**)
7413 &elf_section_data (s
)->local_dynrel
);
7417 if (!bfd_is_abs_section (p
->sec
)
7418 && bfd_is_abs_section (p
->sec
->output_section
))
7420 /* Input section has been discarded, either because
7421 it is a copy of a linkonce section or due to
7422 linker script /DISCARD/, so we'll be discarding
7425 else if (p
->count
!= 0)
7427 srel
= elf_section_data (p
->sec
)->sreloc
;
7428 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7429 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7430 info
->flags
|= DF_TEXTREL
;
7435 lgot_ents
= elf_local_got_ents (ibfd
);
7439 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7440 locsymcount
= symtab_hdr
->sh_info
;
7441 end_lgot_ents
= lgot_ents
+ locsymcount
;
7442 lgot_masks
= (char *) end_lgot_ents
;
7443 s
= ppc64_elf_tdata (ibfd
)->got
;
7444 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7445 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7447 struct got_entry
*ent
;
7449 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7450 if (ent
->got
.refcount
> 0)
7452 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7454 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7456 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7459 srel
->size
+= sizeof (Elf64_External_Rela
);
7461 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7465 ent
->got
.offset
= s
->size
;
7466 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7470 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7476 srel
->size
+= sizeof (Elf64_External_Rela
);
7481 ent
->got
.offset
= (bfd_vma
) -1;
7485 /* Allocate global sym .plt and .got entries, and space for global
7486 sym dynamic relocs. */
7487 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7489 /* We now have determined the sizes of the various dynamic sections.
7490 Allocate memory for them. */
7492 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7494 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7497 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7498 /* These haven't been allocated yet; don't strip. */
7500 else if (s
== htab
->got
7502 || s
== htab
->glink
)
7504 /* Strip this section if we don't need it; see the
7507 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
7511 /* If we don't need this section, strip it from the
7512 output file. This is mostly to handle .rela.bss and
7513 .rela.plt. We must create both sections in
7514 create_dynamic_sections, because they must be created
7515 before the linker maps input sections to output
7516 sections. The linker does that before
7517 adjust_dynamic_symbol is called, and it is that
7518 function which decides whether anything needs to go
7519 into these sections. */
7523 if (s
!= htab
->relplt
)
7526 /* We use the reloc_count field as a counter if we need
7527 to copy relocs into the output file. */
7533 /* It's not one of our sections, so don't allocate space. */
7539 _bfd_strip_section_from_output (info
, s
);
7543 /* .plt is in the bss section. We don't initialise it. */
7547 /* Allocate memory for the section contents. We use bfd_zalloc
7548 here in case unused entries are not reclaimed before the
7549 section's contents are written out. This should not happen,
7550 but this way if it does we get a R_PPC64_NONE reloc in .rela
7551 sections instead of garbage.
7552 We also rely on the section contents being zero when writing
7554 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
7555 if (s
->contents
== NULL
)
7559 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7561 if (!is_ppc64_elf_target (ibfd
->xvec
))
7564 s
= ppc64_elf_tdata (ibfd
)->got
;
7565 if (s
!= NULL
&& s
!= htab
->got
)
7568 _bfd_strip_section_from_output (info
, s
);
7571 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7572 if (s
->contents
== NULL
)
7576 s
= ppc64_elf_tdata (ibfd
)->relgot
;
7580 _bfd_strip_section_from_output (info
, s
);
7583 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
7584 if (s
->contents
== NULL
)
7592 if (htab
->elf
.dynamic_sections_created
)
7594 /* Add some entries to the .dynamic section. We fill in the
7595 values later, in ppc64_elf_finish_dynamic_sections, but we
7596 must add the entries now so that we get the correct size for
7597 the .dynamic section. The DT_DEBUG entry is filled in by the
7598 dynamic linker and used by the debugger. */
7599 #define add_dynamic_entry(TAG, VAL) \
7600 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7602 if (info
->executable
)
7604 if (!add_dynamic_entry (DT_DEBUG
, 0))
7608 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
7610 if (!add_dynamic_entry (DT_PLTGOT
, 0)
7611 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
7612 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
7613 || !add_dynamic_entry (DT_JMPREL
, 0)
7614 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
7620 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
7621 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
7627 if (!add_dynamic_entry (DT_RELA
, 0)
7628 || !add_dynamic_entry (DT_RELASZ
, 0)
7629 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
7632 /* If any dynamic relocs apply to a read-only section,
7633 then we need a DT_TEXTREL entry. */
7634 if ((info
->flags
& DF_TEXTREL
) == 0)
7635 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
7637 if ((info
->flags
& DF_TEXTREL
) != 0)
7639 if (!add_dynamic_entry (DT_TEXTREL
, 0))
7644 #undef add_dynamic_entry
7649 /* Determine the type of stub needed, if any, for a call. */
7651 static inline enum ppc_stub_type
7652 ppc_type_of_stub (asection
*input_sec
,
7653 const Elf_Internal_Rela
*rel
,
7654 struct ppc_link_hash_entry
**hash
,
7655 bfd_vma destination
)
7657 struct ppc_link_hash_entry
*h
= *hash
;
7659 bfd_vma branch_offset
;
7660 bfd_vma max_branch_offset
;
7661 enum elf_ppc64_reloc_type r_type
;
7666 && h
->oh
->is_func_descriptor
)
7669 if (h
->elf
.dynindx
!= -1)
7671 struct plt_entry
*ent
;
7673 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7674 if (ent
->addend
== rel
->r_addend
7675 && ent
->plt
.offset
!= (bfd_vma
) -1)
7678 return ppc_stub_plt_call
;
7682 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
7683 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
7684 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
7685 return ppc_stub_none
;
7688 /* Determine where the call point is. */
7689 location
= (input_sec
->output_offset
7690 + input_sec
->output_section
->vma
7693 branch_offset
= destination
- location
;
7694 r_type
= ELF64_R_TYPE (rel
->r_info
);
7696 /* Determine if a long branch stub is needed. */
7697 max_branch_offset
= 1 << 25;
7698 if (r_type
!= R_PPC64_REL24
)
7699 max_branch_offset
= 1 << 15;
7701 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
7702 /* We need a stub. Figure out whether a long_branch or plt_branch
7704 return ppc_stub_long_branch
;
7706 return ppc_stub_none
;
7709 /* Build a .plt call stub. */
7711 static inline bfd_byte
*
7712 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
7714 #define PPC_LO(v) ((v) & 0xffff)
7715 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7716 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7718 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
7719 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
7720 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7721 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7722 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7724 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
7725 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
7726 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
7728 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
7729 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
7730 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
7735 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7737 struct ppc_stub_hash_entry
*stub_entry
;
7738 struct ppc_branch_hash_entry
*br_entry
;
7739 struct bfd_link_info
*info
;
7740 struct ppc_link_hash_table
*htab
;
7744 struct plt_entry
*ent
;
7748 /* Massage our args to the form they really have. */
7749 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
7752 htab
= ppc_hash_table (info
);
7754 /* Make a note of the offset within the stubs for this entry. */
7755 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
7756 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
7758 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
7759 switch (stub_entry
->stub_type
)
7761 case ppc_stub_long_branch
:
7762 case ppc_stub_long_branch_r2off
:
7763 /* Branches are relative. This is where we are going to. */
7764 off
= dest
= (stub_entry
->target_value
7765 + stub_entry
->target_section
->output_offset
7766 + stub_entry
->target_section
->output_section
->vma
);
7768 /* And this is where we are coming from. */
7769 off
-= (stub_entry
->stub_offset
7770 + stub_entry
->stub_sec
->output_offset
7771 + stub_entry
->stub_sec
->output_section
->vma
);
7773 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
7779 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7780 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7781 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7783 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7785 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7790 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
7792 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
7794 if (info
->emitrelocations
)
7796 Elf_Internal_Rela
*relocs
, *r
;
7797 struct bfd_elf_section_data
*elfsec_data
;
7799 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
7800 relocs
= elfsec_data
->relocs
;
7803 bfd_size_type relsize
;
7804 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
7805 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
7808 elfsec_data
->relocs
= relocs
;
7809 elfsec_data
->rel_hdr
.sh_size
= relsize
;
7810 elfsec_data
->rel_hdr
.sh_entsize
= 24;
7811 stub_entry
->stub_sec
->reloc_count
= 0;
7813 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
7814 stub_entry
->stub_sec
->reloc_count
+= 1;
7815 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
7816 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
7818 if (stub_entry
->h
!= NULL
)
7820 struct elf_link_hash_entry
**hashes
;
7821 unsigned long symndx
;
7822 struct ppc_link_hash_entry
*h
;
7824 hashes
= elf_sym_hashes (htab
->stub_bfd
);
7827 bfd_size_type hsize
;
7829 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
7830 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
7833 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
7834 htab
->stub_globals
= 1;
7836 symndx
= htab
->stub_globals
++;
7838 hashes
[symndx
] = &h
->elf
;
7839 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
7840 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
7842 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
7843 /* H is an opd symbol. The addend must be zero. */
7847 off
= (h
->elf
.root
.u
.def
.value
7848 + h
->elf
.root
.u
.def
.section
->output_offset
7849 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
7856 case ppc_stub_plt_branch
:
7857 case ppc_stub_plt_branch_r2off
:
7858 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
7859 stub_entry
->root
.string
+ 9,
7861 if (br_entry
== NULL
)
7863 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
7864 stub_entry
->root
.string
+ 9);
7865 htab
->stub_error
= TRUE
;
7869 off
= (stub_entry
->target_value
7870 + stub_entry
->target_section
->output_offset
7871 + stub_entry
->target_section
->output_section
->vma
);
7873 bfd_put_64 (htab
->brlt
->owner
, off
,
7874 htab
->brlt
->contents
+ br_entry
->offset
);
7876 if (htab
->relbrlt
!= NULL
)
7878 /* Create a reloc for the branch lookup table entry. */
7879 Elf_Internal_Rela rela
;
7882 rela
.r_offset
= (br_entry
->offset
7883 + htab
->brlt
->output_offset
7884 + htab
->brlt
->output_section
->vma
);
7885 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
7886 rela
.r_addend
= off
;
7888 rl
= htab
->relbrlt
->contents
;
7889 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
7890 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
7893 off
= (br_entry
->offset
7894 + htab
->brlt
->output_offset
7895 + htab
->brlt
->output_section
->vma
7896 - elf_gp (htab
->brlt
->output_section
->owner
)
7897 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7899 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7901 (*_bfd_error_handler
)
7902 (_("linkage table error against `%s'"),
7903 stub_entry
->root
.string
);
7904 bfd_set_error (bfd_error_bad_value
);
7905 htab
->stub_error
= TRUE
;
7910 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
7912 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7914 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7921 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
7922 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7923 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
7925 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
7927 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
7929 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
7931 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
7935 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
7937 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
7940 case ppc_stub_plt_call
:
7941 /* Do the best we can for shared libraries built without
7942 exporting ".foo" for each "foo". This can happen when symbol
7943 versioning scripts strip all bar a subset of symbols. */
7944 if (stub_entry
->h
->oh
!= NULL
7945 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
7946 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7948 /* Point the symbol at the stub. There may be multiple stubs,
7949 we don't really care; The main thing is to make this sym
7950 defined somewhere. Maybe defining the symbol in the stub
7951 section is a silly idea. If we didn't do this, htab->top_id
7953 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
7954 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
7955 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
7958 /* Now build the stub. */
7960 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7961 if (ent
->addend
== stub_entry
->addend
)
7963 off
= ent
->plt
.offset
;
7966 if (off
>= (bfd_vma
) -2)
7969 off
&= ~ (bfd_vma
) 1;
7970 off
+= (htab
->plt
->output_offset
7971 + htab
->plt
->output_section
->vma
7972 - elf_gp (htab
->plt
->output_section
->owner
)
7973 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
7975 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
7977 (*_bfd_error_handler
)
7978 (_("linkage table error against `%s'"),
7979 stub_entry
->h
->elf
.root
.root
.string
);
7980 bfd_set_error (bfd_error_bad_value
);
7981 htab
->stub_error
= TRUE
;
7985 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
7994 stub_entry
->stub_sec
->size
+= size
;
7996 if (htab
->emit_stub_syms
)
7998 struct elf_link_hash_entry
*h
;
8001 const char *const stub_str
[] = { "long_branch",
8002 "long_branch_r2off",
8007 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8008 len2
= strlen (stub_entry
->root
.string
);
8009 name
= bfd_malloc (len1
+ len2
+ 2);
8012 memcpy (name
, stub_entry
->root
.string
, 9);
8013 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8014 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8015 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8018 if (h
->root
.type
== bfd_link_hash_new
)
8020 h
->root
.type
= bfd_link_hash_defined
;
8021 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8022 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8025 h
->ref_regular_nonweak
= 1;
8026 h
->forced_local
= 1;
8034 /* As above, but don't actually build the stub. Just bump offset so
8035 we know stub section sizes, and select plt_branch stubs where
8036 long_branch stubs won't do. */
8039 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8041 struct ppc_stub_hash_entry
*stub_entry
;
8042 struct bfd_link_info
*info
;
8043 struct ppc_link_hash_table
*htab
;
8047 /* Massage our args to the form they really have. */
8048 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8051 htab
= ppc_hash_table (info
);
8053 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8055 struct plt_entry
*ent
;
8057 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8058 if (ent
->addend
== stub_entry
->addend
)
8060 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8063 if (off
>= (bfd_vma
) -2)
8065 off
+= (htab
->plt
->output_offset
8066 + htab
->plt
->output_section
->vma
8067 - elf_gp (htab
->plt
->output_section
->owner
)
8068 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8070 size
= PLT_CALL_STUB_SIZE
;
8071 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8076 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8078 off
= (stub_entry
->target_value
8079 + stub_entry
->target_section
->output_offset
8080 + stub_entry
->target_section
->output_section
->vma
);
8081 off
-= (stub_entry
->stub_sec
->size
8082 + stub_entry
->stub_sec
->output_offset
8083 + stub_entry
->stub_sec
->output_section
->vma
);
8085 /* Reset the stub type from the plt variant in case we now
8086 can reach with a shorter stub. */
8087 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8088 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8091 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8097 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8098 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8100 struct ppc_branch_hash_entry
*br_entry
;
8102 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8103 stub_entry
->root
.string
+ 9,
8105 if (br_entry
== NULL
)
8107 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8108 stub_entry
->root
.string
+ 9);
8109 htab
->stub_error
= TRUE
;
8113 if (br_entry
->iter
!= htab
->stub_iteration
)
8115 br_entry
->iter
= htab
->stub_iteration
;
8116 br_entry
->offset
= htab
->brlt
->size
;
8117 htab
->brlt
->size
+= 8;
8119 if (htab
->relbrlt
!= NULL
)
8120 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8123 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8125 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8129 if (info
->emitrelocations
8130 && (stub_entry
->stub_type
== ppc_stub_long_branch
8131 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8132 stub_entry
->stub_sec
->reloc_count
+= 1;
8135 stub_entry
->stub_sec
->size
+= size
;
8139 /* Set up various things so that we can make a list of input sections
8140 for each output section included in the link. Returns -1 on error,
8141 0 when no stubs will be needed, and 1 on success. */
8144 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8145 struct bfd_link_info
*info
,
8149 int top_id
, top_index
, id
;
8151 asection
**input_list
;
8153 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8155 htab
->no_multi_toc
= no_multi_toc
;
8157 if (htab
->brlt
== NULL
)
8160 /* Find the top input section id. */
8161 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8163 input_bfd
= input_bfd
->link_next
)
8165 for (section
= input_bfd
->sections
;
8167 section
= section
->next
)
8169 if (top_id
< section
->id
)
8170 top_id
= section
->id
;
8174 htab
->top_id
= top_id
;
8175 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8176 htab
->stub_group
= bfd_zmalloc (amt
);
8177 if (htab
->stub_group
== NULL
)
8180 /* Set toc_off for com, und, abs and ind sections. */
8181 for (id
= 0; id
< 3; id
++)
8182 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8184 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8186 /* We can't use output_bfd->section_count here to find the top output
8187 section index as some sections may have been removed, and
8188 _bfd_strip_section_from_output doesn't renumber the indices. */
8189 for (section
= output_bfd
->sections
, top_index
= 0;
8191 section
= section
->next
)
8193 if (top_index
< section
->index
)
8194 top_index
= section
->index
;
8197 htab
->top_index
= top_index
;
8198 amt
= sizeof (asection
*) * (top_index
+ 1);
8199 input_list
= bfd_zmalloc (amt
);
8200 htab
->input_list
= input_list
;
8201 if (input_list
== NULL
)
8207 /* The linker repeatedly calls this function for each TOC input section
8208 and linker generated GOT section. Group input bfds such that the toc
8209 within a group is less than 64k in size. Will break with cute linker
8210 scripts that play games with dot in the output toc section. */
8213 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8215 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8217 if (!htab
->no_multi_toc
)
8219 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8220 bfd_vma off
= addr
- htab
->toc_curr
;
8222 if (off
+ isec
->size
> 0x10000)
8223 htab
->toc_curr
= addr
;
8225 elf_gp (isec
->owner
) = (htab
->toc_curr
8226 - elf_gp (isec
->output_section
->owner
)
8231 /* Called after the last call to the above function. */
8234 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8236 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8238 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8240 /* toc_curr tracks the TOC offset used for code sections below in
8241 ppc64_elf_next_input_section. Start off at 0x8000. */
8242 htab
->toc_curr
= TOC_BASE_OFF
;
8245 /* No toc references were found in ISEC. If the code in ISEC makes no
8246 calls, then there's no need to use toc adjusting stubs when branching
8247 into ISEC. Actually, indirect calls from ISEC are OK as they will
8248 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8249 needed, and 2 if a cyclical call-graph was found but no other reason
8250 for a stub was detected. If called from the top level, a return of
8251 2 means the same as a return of 0. */
8254 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8256 Elf_Internal_Rela
*relstart
, *rel
;
8257 Elf_Internal_Sym
*local_syms
;
8259 struct ppc_link_hash_table
*htab
;
8261 /* We know none of our code bearing sections will need toc stubs. */
8262 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8265 if (isec
->size
== 0)
8268 if (isec
->output_section
== NULL
)
8271 /* Hack for linux kernel. .fixup contains branches, but only back to
8272 the function that hit an exception. */
8273 if (strcmp (isec
->name
, ".fixup") == 0)
8276 if (isec
->reloc_count
== 0)
8279 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8281 if (relstart
== NULL
)
8284 /* Look for branches to outside of this section. */
8287 htab
= ppc_hash_table (info
);
8288 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8290 enum elf_ppc64_reloc_type r_type
;
8291 unsigned long r_symndx
;
8292 struct elf_link_hash_entry
*h
;
8293 Elf_Internal_Sym
*sym
;
8299 r_type
= ELF64_R_TYPE (rel
->r_info
);
8300 if (r_type
!= R_PPC64_REL24
8301 && r_type
!= R_PPC64_REL14
8302 && r_type
!= R_PPC64_REL14_BRTAKEN
8303 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8306 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8307 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8314 /* Ignore branches to undefined syms. */
8315 if (sym_sec
== NULL
)
8318 /* Calls to dynamic lib functions go through a plt call stub
8319 that uses r2. Assume branches to other sections not included
8320 in the link need stubs too, to cover -R and absolute syms. */
8321 if (sym_sec
->output_section
== NULL
)
8328 sym_value
= sym
->st_value
;
8331 if (h
->root
.type
!= bfd_link_hash_defined
8332 && h
->root
.type
!= bfd_link_hash_defweak
)
8334 sym_value
= h
->root
.u
.def
.value
;
8336 sym_value
+= rel
->r_addend
;
8338 /* If this branch reloc uses an opd sym, find the code section. */
8339 opd_adjust
= get_opd_info (sym_sec
);
8340 if (opd_adjust
!= NULL
)
8347 adjust
= opd_adjust
[sym
->st_value
/ 8];
8349 /* Assume deleted functions won't ever be called. */
8351 sym_value
+= adjust
;
8354 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8355 if (dest
== (bfd_vma
) -1)
8360 + sym_sec
->output_offset
8361 + sym_sec
->output_section
->vma
);
8363 /* Ignore branch to self. */
8364 if (sym_sec
== isec
)
8367 /* If the called function uses the toc, we need a stub. */
8368 if (sym_sec
->has_toc_reloc
8369 || sym_sec
->makes_toc_func_call
)
8375 /* Assume any branch that needs a long branch stub might in fact
8376 need a plt_branch stub. A plt_branch stub uses r2. */
8377 else if (dest
- (isec
->output_offset
8378 + isec
->output_section
->vma
8379 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8385 /* If calling back to a section in the process of being tested, we
8386 can't say for sure that no toc adjusting stubs are needed, so
8387 don't return zero. */
8388 else if (sym_sec
->call_check_in_progress
)
8391 /* Branches to another section that itself doesn't have any TOC
8392 references are OK. Recursively call ourselves to check. */
8393 else if (sym_sec
->id
<= htab
->top_id
8394 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8398 /* Mark current section as indeterminate, so that other
8399 sections that call back to current won't be marked as
8401 isec
->call_check_in_progress
= 1;
8402 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8403 isec
->call_check_in_progress
= 0;
8407 /* An error. Exit. */
8411 else if (recur
<= 1)
8413 /* Known result. Mark as checked and set section flag. */
8414 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8417 sym_sec
->makes_toc_func_call
= 1;
8424 /* Unknown result. Continue checking. */
8430 if (local_syms
!= NULL
8431 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8432 != (unsigned char *) local_syms
))
8434 if (elf_section_data (isec
)->relocs
!= relstart
)
8440 /* The linker repeatedly calls this function for each input section,
8441 in the order that input sections are linked into output sections.
8442 Build lists of input sections to determine groupings between which
8443 we may insert linker stubs. */
8446 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8448 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8450 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
8451 && isec
->output_section
->index
<= htab
->top_index
)
8453 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
8454 /* Steal the link_sec pointer for our list. */
8455 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8456 /* This happens to make the list in reverse order,
8457 which is what we want. */
8458 PREV_SEC (isec
) = *list
;
8462 if (htab
->multi_toc_needed
)
8464 /* If a code section has a function that uses the TOC then we need
8465 to use the right TOC (obviously). Also, make sure that .opd gets
8466 the correct TOC value for R_PPC64_TOC relocs that don't have or
8467 can't find their function symbol (shouldn't ever happen now). */
8468 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
8470 if (elf_gp (isec
->owner
) != 0)
8471 htab
->toc_curr
= elf_gp (isec
->owner
);
8473 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
8475 int ret
= toc_adjusting_stub_needed (info
, isec
);
8479 isec
->makes_toc_func_call
= ret
& 1;
8483 /* Functions that don't use the TOC can belong in any TOC group.
8484 Use the last TOC base. This happens to make _init and _fini
8486 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
8490 /* See whether we can group stub sections together. Grouping stub
8491 sections may result in fewer stubs. More importantly, we need to
8492 put all .init* and .fini* stubs at the beginning of the .init or
8493 .fini output sections respectively, because glibc splits the
8494 _init and _fini functions into multiple parts. Putting a stub in
8495 the middle of a function is not a good idea. */
8498 group_sections (struct ppc_link_hash_table
*htab
,
8499 bfd_size_type stub_group_size
,
8500 bfd_boolean stubs_always_before_branch
)
8502 asection
**list
= htab
->input_list
+ htab
->top_index
;
8505 asection
*tail
= *list
;
8506 while (tail
!= NULL
)
8510 bfd_size_type total
;
8511 bfd_boolean big_sec
;
8516 big_sec
= total
>= stub_group_size
;
8517 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
8519 while ((prev
= PREV_SEC (curr
)) != NULL
8520 && ((total
+= curr
->output_offset
- prev
->output_offset
)
8522 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8525 /* OK, the size from the start of CURR to the end is less
8526 than stub_group_size and thus can be handled by one stub
8527 section. (or the tail section is itself larger than
8528 stub_group_size, in which case we may be toast.) We
8529 should really be keeping track of the total size of stubs
8530 added here, as stubs contribute to the final output
8531 section size. That's a little tricky, and this way will
8532 only break if stubs added make the total size more than
8533 2^25, ie. for the default stub_group_size, if stubs total
8534 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8537 prev
= PREV_SEC (tail
);
8538 /* Set up this stub group. */
8539 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8541 while (tail
!= curr
&& (tail
= prev
) != NULL
);
8543 /* But wait, there's more! Input sections up to stub_group_size
8544 bytes before the stub section can be handled by it too.
8545 Don't do this if we have a really large section after the
8546 stubs, as adding more stubs increases the chance that
8547 branches may not reach into the stub section. */
8548 if (!stubs_always_before_branch
&& !big_sec
)
8552 && ((total
+= tail
->output_offset
- prev
->output_offset
)
8554 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
8557 prev
= PREV_SEC (tail
);
8558 htab
->stub_group
[tail
->id
].link_sec
= curr
;
8564 while (list
-- != htab
->input_list
);
8565 free (htab
->input_list
);
8569 /* Determine and set the size of the stub section for a final link.
8571 The basic idea here is to examine all the relocations looking for
8572 PC-relative calls to a target that is unreachable with a "bl"
8576 ppc64_elf_size_stubs (bfd
*output_bfd
,
8577 struct bfd_link_info
*info
,
8578 bfd_signed_vma group_size
,
8579 asection
*(*add_stub_section
) (const char *, asection
*),
8580 void (*layout_sections_again
) (void))
8582 bfd_size_type stub_group_size
;
8583 bfd_boolean stubs_always_before_branch
;
8584 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8586 /* Stash our params away. */
8587 htab
->add_stub_section
= add_stub_section
;
8588 htab
->layout_sections_again
= layout_sections_again
;
8589 stubs_always_before_branch
= group_size
< 0;
8591 stub_group_size
= -group_size
;
8593 stub_group_size
= group_size
;
8594 if (stub_group_size
== 1)
8596 /* Default values. */
8597 if (stubs_always_before_branch
)
8599 stub_group_size
= 0x1e00000;
8600 if (htab
->has_14bit_branch
)
8601 stub_group_size
= 0x7800;
8605 stub_group_size
= 0x1c00000;
8606 if (htab
->has_14bit_branch
)
8607 stub_group_size
= 0x7000;
8611 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
8616 unsigned int bfd_indx
;
8618 bfd_boolean stub_changed
;
8620 htab
->stub_iteration
+= 1;
8621 stub_changed
= FALSE
;
8623 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
8625 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
8627 Elf_Internal_Shdr
*symtab_hdr
;
8629 Elf_Internal_Sym
*local_syms
= NULL
;
8631 /* We'll need the symbol table in a second. */
8632 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
8633 if (symtab_hdr
->sh_info
== 0)
8636 /* Walk over each section attached to the input bfd. */
8637 for (section
= input_bfd
->sections
;
8639 section
= section
->next
)
8641 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
8643 /* If there aren't any relocs, then there's nothing more
8645 if ((section
->flags
& SEC_RELOC
) == 0
8646 || section
->reloc_count
== 0)
8649 /* If this section is a link-once section that will be
8650 discarded, then don't create any stubs. */
8651 if (section
->output_section
== NULL
8652 || section
->output_section
->owner
!= output_bfd
)
8655 /* Get the relocs. */
8657 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
8659 if (internal_relocs
== NULL
)
8660 goto error_ret_free_local
;
8662 /* Now examine each relocation. */
8663 irela
= internal_relocs
;
8664 irelaend
= irela
+ section
->reloc_count
;
8665 for (; irela
< irelaend
; irela
++)
8667 enum elf_ppc64_reloc_type r_type
;
8668 unsigned int r_indx
;
8669 enum ppc_stub_type stub_type
;
8670 struct ppc_stub_hash_entry
*stub_entry
;
8671 asection
*sym_sec
, *code_sec
;
8673 bfd_vma destination
;
8674 bfd_boolean ok_dest
;
8675 struct ppc_link_hash_entry
*hash
;
8676 struct ppc_link_hash_entry
*fdh
;
8677 struct elf_link_hash_entry
*h
;
8678 Elf_Internal_Sym
*sym
;
8680 const asection
*id_sec
;
8683 r_type
= ELF64_R_TYPE (irela
->r_info
);
8684 r_indx
= ELF64_R_SYM (irela
->r_info
);
8686 if (r_type
>= R_PPC64_max
)
8688 bfd_set_error (bfd_error_bad_value
);
8689 goto error_ret_free_internal
;
8692 /* Only look for stubs on branch instructions. */
8693 if (r_type
!= R_PPC64_REL24
8694 && r_type
!= R_PPC64_REL14
8695 && r_type
!= R_PPC64_REL14_BRTAKEN
8696 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8699 /* Now determine the call target, its name, value,
8701 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8703 goto error_ret_free_internal
;
8704 hash
= (struct ppc_link_hash_entry
*) h
;
8710 sym_value
= sym
->st_value
;
8716 /* Recognise an old ABI func code entry sym, and
8717 use the func descriptor sym instead. */
8718 if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
8719 && hash
->elf
.root
.root
.string
[0] == '.'
8720 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
8722 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
8723 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8725 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
8726 sym_value
= fdh
->elf
.root
.u
.def
.value
;
8727 if (sym_sec
->output_section
!= NULL
)
8733 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
8734 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
8736 sym_value
= hash
->elf
.root
.u
.def
.value
;
8737 if (sym_sec
->output_section
!= NULL
)
8740 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
8742 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
8746 bfd_set_error (bfd_error_bad_value
);
8747 goto error_ret_free_internal
;
8754 sym_value
+= irela
->r_addend
;
8755 destination
= (sym_value
8756 + sym_sec
->output_offset
8757 + sym_sec
->output_section
->vma
);
8761 opd_adjust
= get_opd_info (sym_sec
);
8762 if (opd_adjust
!= NULL
)
8768 long adjust
= opd_adjust
[sym_value
/ 8];
8771 sym_value
+= adjust
;
8773 dest
= opd_entry_value (sym_sec
, sym_value
,
8774 &code_sec
, &sym_value
);
8775 if (dest
!= (bfd_vma
) -1)
8780 /* Fixup old ABI sym to point at code
8782 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
8783 hash
->elf
.root
.u
.def
.section
= code_sec
;
8784 hash
->elf
.root
.u
.def
.value
= sym_value
;
8789 /* Determine what (if any) linker stub is needed. */
8790 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
8793 if (stub_type
!= ppc_stub_plt_call
)
8795 /* Check whether we need a TOC adjusting stub.
8796 Since the linker pastes together pieces from
8797 different object files when creating the
8798 _init and _fini functions, it may be that a
8799 call to what looks like a local sym is in
8800 fact a call needing a TOC adjustment. */
8801 if (code_sec
!= NULL
8802 && code_sec
->output_section
!= NULL
8803 && (htab
->stub_group
[code_sec
->id
].toc_off
8804 != htab
->stub_group
[section
->id
].toc_off
)
8805 && (code_sec
->has_toc_reloc
8806 || code_sec
->makes_toc_func_call
))
8807 stub_type
= ppc_stub_long_branch_r2off
;
8810 if (stub_type
== ppc_stub_none
)
8813 /* __tls_get_addr calls might be eliminated. */
8814 if (stub_type
!= ppc_stub_plt_call
8816 && (hash
== htab
->tls_get_addr
8817 || hash
== htab
->tls_get_addr_fd
)
8818 && section
->has_tls_reloc
8819 && irela
!= internal_relocs
)
8824 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
8825 irela
- 1, input_bfd
))
8826 goto error_ret_free_internal
;
8831 /* Support for grouping stub sections. */
8832 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
8834 /* Get the name of this stub. */
8835 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
8837 goto error_ret_free_internal
;
8839 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
8840 stub_name
, FALSE
, FALSE
);
8841 if (stub_entry
!= NULL
)
8843 /* The proper stub has already been created. */
8848 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
8849 if (stub_entry
== NULL
)
8852 error_ret_free_internal
:
8853 if (elf_section_data (section
)->relocs
== NULL
)
8854 free (internal_relocs
);
8855 error_ret_free_local
:
8856 if (local_syms
!= NULL
8857 && (symtab_hdr
->contents
8858 != (unsigned char *) local_syms
))
8863 stub_entry
->stub_type
= stub_type
;
8864 stub_entry
->target_value
= sym_value
;
8865 stub_entry
->target_section
= code_sec
;
8866 stub_entry
->h
= hash
;
8867 stub_entry
->addend
= irela
->r_addend
;
8869 if (stub_entry
->h
!= NULL
)
8870 htab
->stub_globals
+= 1;
8872 stub_changed
= TRUE
;
8875 /* We're done with the internal relocs, free them. */
8876 if (elf_section_data (section
)->relocs
!= internal_relocs
)
8877 free (internal_relocs
);
8880 if (local_syms
!= NULL
8881 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8883 if (!info
->keep_memory
)
8886 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8893 /* OK, we've added some stubs. Find out the new size of the
8895 for (stub_sec
= htab
->stub_bfd
->sections
;
8897 stub_sec
= stub_sec
->next
)
8898 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
8901 stub_sec
->reloc_count
= 0;
8904 htab
->brlt
->size
= 0;
8905 if (htab
->relbrlt
!= NULL
)
8906 htab
->relbrlt
->size
= 0;
8908 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
8910 /* Ask the linker to do its stuff. */
8911 (*htab
->layout_sections_again
) ();
8914 /* It would be nice to strip .branch_lt from the output if the
8915 section is empty, but it's too late. If we strip sections here,
8916 the dynamic symbol table is corrupted since the section symbol
8917 for the stripped section isn't written. */
8922 /* Called after we have determined section placement. If sections
8923 move, we'll be called again. Provide a value for TOCstart. */
8926 ppc64_elf_toc (bfd
*obfd
)
8931 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8932 order. The TOC starts where the first of these sections starts. */
8933 s
= bfd_get_section_by_name (obfd
, ".got");
8935 s
= bfd_get_section_by_name (obfd
, ".toc");
8937 s
= bfd_get_section_by_name (obfd
, ".tocbss");
8939 s
= bfd_get_section_by_name (obfd
, ".plt");
8942 /* This may happen for
8943 o references to TOC base (SYM@toc / TOC[tc0]) without a
8946 o --gc-sections and empty TOC sections
8948 FIXME: Warn user? */
8950 /* Look for a likely section. We probably won't even be
8952 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8953 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
8954 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8957 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8958 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
8959 == (SEC_ALLOC
| SEC_SMALL_DATA
))
8962 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8963 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
8966 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
8967 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
8973 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
8978 /* Build all the stubs associated with the current output file.
8979 The stubs are kept in a hash table attached to the main linker
8980 hash table. This function is called via gldelf64ppc_finish. */
8983 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
8984 struct bfd_link_info
*info
,
8987 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8990 int stub_sec_count
= 0;
8992 htab
->emit_stub_syms
= emit_stub_syms
;
8994 /* Allocate memory to hold the linker stubs. */
8995 for (stub_sec
= htab
->stub_bfd
->sections
;
8997 stub_sec
= stub_sec
->next
)
8998 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
8999 && stub_sec
->size
!= 0)
9001 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9002 if (stub_sec
->contents
== NULL
)
9004 /* We want to check that built size is the same as calculated
9005 size. rawsize is a convenient location to use. */
9006 stub_sec
->rawsize
= stub_sec
->size
;
9010 if (htab
->plt
!= NULL
)
9015 /* Build the .glink plt call stub. */
9016 plt0
= (htab
->plt
->output_section
->vma
9017 + htab
->plt
->output_offset
9018 - (htab
->glink
->output_section
->vma
9019 + htab
->glink
->output_offset
9020 + GLINK_CALL_STUB_SIZE
));
9021 if (plt0
+ 0x80008000 > 0xffffffff)
9023 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
9024 bfd_set_error (bfd_error_bad_value
);
9028 if (htab
->emit_stub_syms
)
9030 struct elf_link_hash_entry
*h
;
9031 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9034 if (h
->root
.type
== bfd_link_hash_new
)
9036 h
->root
.type
= bfd_link_hash_defined
;
9037 h
->root
.u
.def
.section
= htab
->glink
;
9038 h
->root
.u
.def
.value
= 0;
9041 h
->ref_regular_nonweak
= 1;
9042 h
->forced_local
= 1;
9046 p
= htab
->glink
->contents
;
9047 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
9049 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
9051 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
9053 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9055 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
9057 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
9059 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
9061 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
9063 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
9065 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
9067 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
9069 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
9071 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9073 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9075 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9077 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9080 /* Build the .glink lazy link call stubs. */
9082 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9086 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9091 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9093 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9096 bfd_put_32 (htab
->glink
->owner
,
9097 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
9101 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9104 if (htab
->brlt
->size
!= 0)
9106 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9108 if (htab
->brlt
->contents
== NULL
)
9111 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9113 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9114 htab
->relbrlt
->size
);
9115 if (htab
->relbrlt
->contents
== NULL
)
9119 /* Build the stubs as directed by the stub hash table. */
9120 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9122 for (stub_sec
= htab
->stub_bfd
->sections
;
9124 stub_sec
= stub_sec
->next
)
9125 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9127 stub_sec_count
+= 1;
9128 if (stub_sec
->rawsize
!= stub_sec
->size
)
9132 if (stub_sec
!= NULL
9133 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9135 htab
->stub_error
= TRUE
;
9136 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9139 if (htab
->stub_error
)
9144 *stats
= bfd_malloc (500);
9148 sprintf (*stats
, _("linker stubs in %u group%s\n"
9151 " long branch %lu\n"
9152 " long toc adj %lu\n"
9155 stub_sec_count
== 1 ? "" : "s",
9156 htab
->stub_count
[ppc_stub_long_branch
- 1],
9157 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9158 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9159 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9160 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9165 /* This function undoes the changes made by add_symbol_adjust. */
9168 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9170 struct ppc_link_hash_entry
*eh
;
9172 if (h
->root
.type
== bfd_link_hash_indirect
)
9175 if (h
->root
.type
== bfd_link_hash_warning
)
9176 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9178 eh
= (struct ppc_link_hash_entry
*) h
;
9179 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9182 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9187 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9189 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9190 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9193 /* The RELOCATE_SECTION function is called by the ELF backend linker
9194 to handle the relocations for a section.
9196 The relocs are always passed as Rela structures; if the section
9197 actually uses Rel structures, the r_addend field will always be
9200 This function is responsible for adjust the section contents as
9201 necessary, and (if using Rela relocs and generating a
9202 relocatable output file) adjusting the reloc addend as
9205 This function does not have to worry about setting the reloc
9206 address or the reloc symbol index.
9208 LOCAL_SYMS is a pointer to the swapped in local symbols.
9210 LOCAL_SECTIONS is an array giving the section in the input file
9211 corresponding to the st_shndx field of each local symbol.
9213 The global hash table entry for the global symbols can be found
9214 via elf_sym_hashes (input_bfd).
9216 When generating relocatable output, this function must handle
9217 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9218 going to be the section symbol corresponding to the output
9219 section, which means that the addend must be adjusted
9223 ppc64_elf_relocate_section (bfd
*output_bfd
,
9224 struct bfd_link_info
*info
,
9226 asection
*input_section
,
9228 Elf_Internal_Rela
*relocs
,
9229 Elf_Internal_Sym
*local_syms
,
9230 asection
**local_sections
)
9232 struct ppc_link_hash_table
*htab
;
9233 Elf_Internal_Shdr
*symtab_hdr
;
9234 struct elf_link_hash_entry
**sym_hashes
;
9235 Elf_Internal_Rela
*rel
;
9236 Elf_Internal_Rela
*relend
;
9237 Elf_Internal_Rela outrel
;
9239 struct got_entry
**local_got_ents
;
9241 bfd_boolean ret
= TRUE
;
9243 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9244 bfd_boolean is_power4
= FALSE
;
9246 if (info
->relocatable
)
9249 /* Initialize howto table if needed. */
9250 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9253 htab
= ppc_hash_table (info
);
9255 /* Don't relocate stub sections. */
9256 if (input_section
->owner
== htab
->stub_bfd
)
9259 local_got_ents
= elf_local_got_ents (input_bfd
);
9260 TOCstart
= elf_gp (output_bfd
);
9261 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9262 sym_hashes
= elf_sym_hashes (input_bfd
);
9263 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
9266 relend
= relocs
+ input_section
->reloc_count
;
9267 for (; rel
< relend
; rel
++)
9269 enum elf_ppc64_reloc_type r_type
;
9271 bfd_reloc_status_type r
;
9272 Elf_Internal_Sym
*sym
;
9274 struct elf_link_hash_entry
*h_elf
;
9275 struct ppc_link_hash_entry
*h
;
9276 struct ppc_link_hash_entry
*fdh
;
9277 const char *sym_name
;
9278 unsigned long r_symndx
, toc_symndx
;
9279 char tls_mask
, tls_gd
, tls_type
;
9282 bfd_boolean unresolved_reloc
;
9284 unsigned long insn
, mask
;
9285 struct ppc_stub_hash_entry
*stub_entry
;
9286 bfd_vma max_br_offset
;
9289 r_type
= ELF64_R_TYPE (rel
->r_info
);
9290 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9292 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9293 symbol of the previous ADDR64 reloc. The symbol gives us the
9294 proper TOC base to use. */
9295 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9297 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9299 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9305 unresolved_reloc
= FALSE
;
9308 if (r_symndx
< symtab_hdr
->sh_info
)
9310 /* It's a local symbol. */
9313 sym
= local_syms
+ r_symndx
;
9314 sec
= local_sections
[r_symndx
];
9315 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
);
9316 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9317 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9318 opd_adjust
= get_opd_info (sec
);
9319 if (opd_adjust
!= NULL
)
9321 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9325 relocation
+= adjust
;
9330 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9331 r_symndx
, symtab_hdr
, sym_hashes
,
9332 h_elf
, sec
, relocation
,
9333 unresolved_reloc
, warned
);
9334 sym_name
= h_elf
->root
.root
.string
;
9335 sym_type
= h_elf
->type
;
9337 h
= (struct ppc_link_hash_entry
*) h_elf
;
9339 /* TLS optimizations. Replace instruction sequences and relocs
9340 based on information we collected in tls_optimize. We edit
9341 RELOCS so that --emit-relocs will output something sensible
9342 for the final instruction stream. */
9346 if (IS_PPC64_TLS_RELOC (r_type
))
9349 tls_mask
= h
->tls_mask
;
9350 else if (local_got_ents
!= NULL
)
9353 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9354 tls_mask
= lgot_masks
[r_symndx
];
9356 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9358 /* Check for toc tls entries. */
9361 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9366 tls_mask
= *toc_tls
;
9370 /* Check that tls relocs are used with tls syms, and non-tls
9371 relocs are used with non-tls syms. */
9373 && r_type
!= R_PPC64_NONE
9375 || h
->elf
.root
.type
== bfd_link_hash_defined
9376 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9377 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9379 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9380 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9383 (*_bfd_error_handler
)
9384 (sym_type
== STT_TLS
9385 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9386 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9389 (long) rel
->r_offset
,
9390 ppc64_elf_howto_table
[r_type
]->name
,
9394 /* Ensure reloc mapping code below stays sane. */
9395 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
9396 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
9397 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
9398 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
9399 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
9400 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
9401 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
9402 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
9403 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
9404 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
9413 case R_PPC64_TOC16_LO
:
9414 case R_PPC64_TOC16_DS
:
9415 case R_PPC64_TOC16_LO_DS
:
9417 /* Check for toc tls entries. */
9421 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9428 tls_mask
= *toc_tls
;
9429 if (r_type
== R_PPC64_TOC16_DS
9430 || r_type
== R_PPC64_TOC16_LO_DS
)
9433 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
9438 /* If we found a GD reloc pair, then we might be
9439 doing a GD->IE transition. */
9442 tls_gd
= TLS_TPRELGD
;
9443 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9444 goto tls_get_addr_check
;
9446 else if (retval
== 3)
9448 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9449 goto tls_get_addr_check
;
9456 case R_PPC64_GOT_TPREL16_DS
:
9457 case R_PPC64_GOT_TPREL16_LO_DS
:
9459 && (tls_mask
& TLS_TPREL
) == 0)
9462 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
9464 insn
|= 0x3c0d0000; /* addis 0,13,0 */
9465 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
9466 r_type
= R_PPC64_TPREL16_HA
;
9467 if (toc_symndx
!= 0)
9469 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9470 /* We changed the symbol. Start over in order to
9471 get h, sym, sec etc. right. */
9476 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9482 && (tls_mask
& TLS_TPREL
) == 0)
9485 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9486 if ((insn
& ((0x3f << 26) | (31 << 11)))
9487 == ((31 << 26) | (13 << 11)))
9488 rtra
= insn
& ((1 << 26) - (1 << 16));
9489 else if ((insn
& ((0x3f << 26) | (31 << 16)))
9490 == ((31 << 26) | (13 << 16)))
9491 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
9494 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
9497 else if ((insn
& (31 << 1)) == 23 << 1
9498 && ((insn
& (31 << 6)) < 14 << 6
9499 || ((insn
& (31 << 6)) >= 16 << 6
9500 && (insn
& (31 << 6)) < 24 << 6)))
9501 /* load and store indexed -> dform. */
9502 insn
= (32 | ((insn
>> 6) & 31)) << 26;
9503 else if ((insn
& (31 << 1)) == 21 << 1
9504 && (insn
& (0x1a << 6)) == 0)
9505 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9506 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
9507 | ((insn
>> 6) & 1));
9508 else if ((insn
& (31 << 1)) == 21 << 1
9509 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
9511 insn
= (58 << 26) | 2;
9515 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9516 /* Was PPC64_TLS which sits on insn boundary, now
9517 PPC64_TPREL16_LO which is at insn+2. */
9519 r_type
= R_PPC64_TPREL16_LO
;
9520 if (toc_symndx
!= 0)
9522 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
9523 /* We changed the symbol. Start over in order to
9524 get h, sym, sec etc. right. */
9529 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9533 case R_PPC64_GOT_TLSGD16_HI
:
9534 case R_PPC64_GOT_TLSGD16_HA
:
9535 tls_gd
= TLS_TPRELGD
;
9536 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9540 case R_PPC64_GOT_TLSLD16_HI
:
9541 case R_PPC64_GOT_TLSLD16_HA
:
9542 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9545 if ((tls_mask
& tls_gd
) != 0)
9546 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9547 + R_PPC64_GOT_TPREL16_DS
);
9550 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9552 r_type
= R_PPC64_NONE
;
9554 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9558 case R_PPC64_GOT_TLSGD16
:
9559 case R_PPC64_GOT_TLSGD16_LO
:
9560 tls_gd
= TLS_TPRELGD
;
9561 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
9562 goto tls_get_addr_check
;
9565 case R_PPC64_GOT_TLSLD16
:
9566 case R_PPC64_GOT_TLSLD16_LO
:
9567 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
9570 if (rel
+ 1 < relend
)
9572 enum elf_ppc64_reloc_type r_type2
;
9573 unsigned long r_symndx2
;
9574 struct elf_link_hash_entry
*h2
;
9575 bfd_vma insn1
, insn2
, insn3
;
9578 /* The next instruction should be a call to
9579 __tls_get_addr. Peek at the reloc to be sure. */
9580 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
9581 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
9582 if (r_symndx2
< symtab_hdr
->sh_info
9583 || (r_type2
!= R_PPC64_REL14
9584 && r_type2
!= R_PPC64_REL14_BRTAKEN
9585 && r_type2
!= R_PPC64_REL14_BRNTAKEN
9586 && r_type2
!= R_PPC64_REL24
))
9589 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
9590 while (h2
->root
.type
== bfd_link_hash_indirect
9591 || h2
->root
.type
== bfd_link_hash_warning
)
9592 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
9593 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
9594 && h2
!= &htab
->tls_get_addr_fd
->elf
))
9597 /* OK, it checks out. Replace the call. */
9598 offset
= rel
[1].r_offset
;
9599 insn1
= bfd_get_32 (output_bfd
,
9600 contents
+ rel
->r_offset
- 2);
9601 insn3
= bfd_get_32 (output_bfd
,
9602 contents
+ offset
+ 4);
9603 if ((tls_mask
& tls_gd
) != 0)
9606 insn1
&= (1 << 26) - (1 << 2);
9607 insn1
|= 58 << 26; /* ld */
9608 insn2
= 0x7c636a14; /* add 3,3,13 */
9609 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
9610 if ((tls_mask
& TLS_EXPLICIT
) == 0)
9611 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
9612 + R_PPC64_GOT_TPREL16_DS
);
9614 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
9615 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9620 insn1
= 0x3c6d0000; /* addis 3,13,0 */
9621 insn2
= 0x38630000; /* addi 3,3,0 */
9624 /* Was an LD reloc. */
9626 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9627 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
9629 else if (toc_symndx
!= 0)
9630 r_symndx
= toc_symndx
;
9631 r_type
= R_PPC64_TPREL16_HA
;
9632 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9633 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
9634 R_PPC64_TPREL16_LO
);
9635 rel
[1].r_offset
+= 2;
9638 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
9642 rel
[1].r_offset
+= 4;
9644 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
9645 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
9646 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
9647 if (tls_gd
== 0 || toc_symndx
!= 0)
9649 /* We changed the symbol. Start over in order
9650 to get h, sym, sec etc. right. */
9658 case R_PPC64_DTPMOD64
:
9659 if (rel
+ 1 < relend
9660 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
9661 && rel
[1].r_offset
== rel
->r_offset
+ 8)
9663 if ((tls_mask
& TLS_GD
) == 0)
9665 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
9666 if ((tls_mask
& TLS_TPRELGD
) != 0)
9667 r_type
= R_PPC64_TPREL64
;
9670 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9671 r_type
= R_PPC64_NONE
;
9673 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9678 if ((tls_mask
& TLS_LD
) == 0)
9680 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
9681 r_type
= R_PPC64_NONE
;
9682 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9687 case R_PPC64_TPREL64
:
9688 if ((tls_mask
& TLS_TPREL
) == 0)
9690 r_type
= R_PPC64_NONE
;
9691 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
9696 /* Handle other relocations that tweak non-addend part of insn. */
9698 max_br_offset
= 1 << 25;
9699 addend
= rel
->r_addend
;
9705 /* Branch taken prediction relocations. */
9706 case R_PPC64_ADDR14_BRTAKEN
:
9707 case R_PPC64_REL14_BRTAKEN
:
9708 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9711 /* Branch not taken prediction relocations. */
9712 case R_PPC64_ADDR14_BRNTAKEN
:
9713 case R_PPC64_REL14_BRNTAKEN
:
9714 insn
|= bfd_get_32 (output_bfd
,
9715 contents
+ rel
->r_offset
) & ~(0x01 << 21);
9719 max_br_offset
= 1 << 15;
9723 /* Calls to functions with a different TOC, such as calls to
9724 shared objects, need to alter the TOC pointer. This is
9725 done using a linkage stub. A REL24 branching to these
9726 linkage stubs needs to be followed by a nop, as the nop
9727 will be replaced with an instruction to restore the TOC
9732 && (((fdh
= h
->oh
) != NULL
9733 && fdh
->elf
.plt
.plist
!= NULL
)
9734 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
9736 && sec
->output_section
!= NULL
9737 && sec
->id
<= htab
->top_id
9738 && (htab
->stub_group
[sec
->id
].toc_off
9739 != htab
->stub_group
[input_section
->id
].toc_off
)))
9740 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
9742 && (stub_entry
->stub_type
== ppc_stub_plt_call
9743 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
9744 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
9746 bfd_boolean can_plt_call
= FALSE
;
9748 if (rel
->r_offset
+ 8 <= input_section
->size
)
9751 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
9753 || nop
== CROR_151515
|| nop
== CROR_313131
)
9755 bfd_put_32 (input_bfd
, LD_R2_40R1
,
9756 contents
+ rel
->r_offset
+ 4);
9757 can_plt_call
= TRUE
;
9763 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9765 /* If this is a plain branch rather than a branch
9766 and link, don't require a nop. */
9768 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9770 can_plt_call
= TRUE
;
9773 && strcmp (h
->elf
.root
.root
.string
,
9774 ".__libc_start_main") == 0)
9776 /* Allow crt1 branch to go via a toc adjusting stub. */
9777 can_plt_call
= TRUE
;
9781 if (strcmp (input_section
->output_section
->name
,
9783 || strcmp (input_section
->output_section
->name
,
9785 (*_bfd_error_handler
)
9786 (_("%B(%A+0x%lx): automatic multiple TOCs "
9787 "not supported using your crt files; "
9788 "recompile with -mminimal-toc or upgrade gcc"),
9791 (long) rel
->r_offset
);
9793 (*_bfd_error_handler
)
9794 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9795 "does not allow automatic multiple TOCs; "
9796 "recompile with -mminimal-toc or "
9797 "-fno-optimize-sibling-calls, "
9798 "or make `%s' extern"),
9801 (long) rel
->r_offset
,
9804 bfd_set_error (bfd_error_bad_value
);
9810 && stub_entry
->stub_type
== ppc_stub_plt_call
)
9811 unresolved_reloc
= FALSE
;
9814 if (stub_entry
== NULL
9815 && get_opd_info (sec
) != NULL
)
9817 /* The branch destination is the value of the opd entry. */
9818 bfd_vma off
= (relocation
- sec
->output_section
->vma
9819 - sec
->output_offset
+ rel
->r_addend
);
9820 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
9821 if (dest
!= (bfd_vma
) -1)
9828 /* If the branch is out of reach we ought to have a long
9830 from
= (rel
->r_offset
9831 + input_section
->output_offset
9832 + input_section
->output_section
->vma
);
9834 if (stub_entry
== NULL
9835 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
9836 >= 2 * max_br_offset
)
9837 && r_type
!= R_PPC64_ADDR14_BRTAKEN
9838 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
9839 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
9842 if (stub_entry
!= NULL
)
9844 /* Munge up the value and addend so that we call the stub
9845 rather than the procedure directly. */
9846 relocation
= (stub_entry
->stub_offset
9847 + stub_entry
->stub_sec
->output_offset
9848 + stub_entry
->stub_sec
->output_section
->vma
);
9856 /* Set 'a' bit. This is 0b00010 in BO field for branch
9857 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9858 for branch on CTR insns (BO == 1a00t or 1a01t). */
9859 if ((insn
& (0x14 << 21)) == (0x04 << 21))
9861 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
9868 /* Invert 'y' bit if not the default. */
9869 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
9873 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9876 /* NOP out calls to undefined weak functions.
9877 We can thus call a weak function without first
9878 checking whether the function is defined. */
9880 && h
->elf
.root
.type
== bfd_link_hash_undefweak
9881 && r_type
== R_PPC64_REL24
9883 && rel
->r_addend
== 0)
9885 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
9896 (*_bfd_error_handler
)
9897 (_("%B: unknown relocation type %d for symbol %s"),
9898 input_bfd
, (int) r_type
, sym_name
);
9900 bfd_set_error (bfd_error_bad_value
);
9906 case R_PPC64_GNU_VTINHERIT
:
9907 case R_PPC64_GNU_VTENTRY
:
9910 /* GOT16 relocations. Like an ADDR16 using the symbol's
9911 address in the GOT as relocation value instead of the
9912 symbol's value itself. Also, create a GOT entry for the
9913 symbol and put the symbol value there. */
9914 case R_PPC64_GOT_TLSGD16
:
9915 case R_PPC64_GOT_TLSGD16_LO
:
9916 case R_PPC64_GOT_TLSGD16_HI
:
9917 case R_PPC64_GOT_TLSGD16_HA
:
9918 tls_type
= TLS_TLS
| TLS_GD
;
9921 case R_PPC64_GOT_TLSLD16
:
9922 case R_PPC64_GOT_TLSLD16_LO
:
9923 case R_PPC64_GOT_TLSLD16_HI
:
9924 case R_PPC64_GOT_TLSLD16_HA
:
9925 tls_type
= TLS_TLS
| TLS_LD
;
9928 case R_PPC64_GOT_TPREL16_DS
:
9929 case R_PPC64_GOT_TPREL16_LO_DS
:
9930 case R_PPC64_GOT_TPREL16_HI
:
9931 case R_PPC64_GOT_TPREL16_HA
:
9932 tls_type
= TLS_TLS
| TLS_TPREL
;
9935 case R_PPC64_GOT_DTPREL16_DS
:
9936 case R_PPC64_GOT_DTPREL16_LO_DS
:
9937 case R_PPC64_GOT_DTPREL16_HI
:
9938 case R_PPC64_GOT_DTPREL16_HA
:
9939 tls_type
= TLS_TLS
| TLS_DTPREL
;
9943 case R_PPC64_GOT16_LO
:
9944 case R_PPC64_GOT16_HI
:
9945 case R_PPC64_GOT16_HA
:
9946 case R_PPC64_GOT16_DS
:
9947 case R_PPC64_GOT16_LO_DS
:
9950 /* Relocation is to the entry for this symbol in the global
9955 unsigned long indx
= 0;
9957 if (tls_type
== (TLS_TLS
| TLS_LD
)
9959 || !h
->elf
.def_dynamic
))
9960 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
9963 struct got_entry
*ent
;
9967 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
9968 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
9971 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
9972 /* This is actually a static link, or it is a
9973 -Bsymbolic link and the symbol is defined
9974 locally, or the symbol was forced to be local
9975 because of a version file. */
9979 indx
= h
->elf
.dynindx
;
9980 unresolved_reloc
= FALSE
;
9982 ent
= h
->elf
.got
.glist
;
9986 if (local_got_ents
== NULL
)
9988 ent
= local_got_ents
[r_symndx
];
9991 for (; ent
!= NULL
; ent
= ent
->next
)
9992 if (ent
->addend
== rel
->r_addend
9993 && ent
->owner
== input_bfd
9994 && ent
->tls_type
== tls_type
)
9998 offp
= &ent
->got
.offset
;
10001 got
= ppc64_elf_tdata (input_bfd
)->got
;
10005 /* The offset must always be a multiple of 8. We use the
10006 least significant bit to record whether we have already
10007 processed this entry. */
10009 if ((off
& 1) != 0)
10013 /* Generate relocs for the dynamic linker, except in
10014 the case of TLSLD where we'll use one entry per
10016 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10019 if ((info
->shared
|| indx
!= 0)
10021 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10022 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10024 outrel
.r_offset
= (got
->output_section
->vma
10025 + got
->output_offset
10027 outrel
.r_addend
= rel
->r_addend
;
10028 if (tls_type
& (TLS_LD
| TLS_GD
))
10030 outrel
.r_addend
= 0;
10031 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10032 if (tls_type
== (TLS_TLS
| TLS_GD
))
10034 loc
= relgot
->contents
;
10035 loc
+= (relgot
->reloc_count
++
10036 * sizeof (Elf64_External_Rela
));
10037 bfd_elf64_swap_reloca_out (output_bfd
,
10039 outrel
.r_offset
+= 8;
10040 outrel
.r_addend
= rel
->r_addend
;
10042 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10045 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10046 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10047 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10048 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10049 else if (indx
== 0)
10051 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10053 /* Write the .got section contents for the sake
10055 loc
= got
->contents
+ off
;
10056 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10060 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10062 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10064 outrel
.r_addend
+= relocation
;
10065 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10066 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10068 loc
= relgot
->contents
;
10069 loc
+= (relgot
->reloc_count
++
10070 * sizeof (Elf64_External_Rela
));
10071 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10074 /* Init the .got section contents here if we're not
10075 emitting a reloc. */
10078 relocation
+= rel
->r_addend
;
10079 if (tls_type
== (TLS_TLS
| TLS_LD
))
10081 else if (tls_type
!= 0)
10083 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10084 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10085 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10087 if (tls_type
== (TLS_TLS
| TLS_GD
))
10089 bfd_put_64 (output_bfd
, relocation
,
10090 got
->contents
+ off
+ 8);
10095 bfd_put_64 (output_bfd
, relocation
,
10096 got
->contents
+ off
);
10100 if (off
>= (bfd_vma
) -2)
10103 relocation
= got
->output_offset
+ off
;
10105 /* TOC base (r2) is TOC start plus 0x8000. */
10106 addend
= -TOC_BASE_OFF
;
10110 case R_PPC64_PLT16_HA
:
10111 case R_PPC64_PLT16_HI
:
10112 case R_PPC64_PLT16_LO
:
10113 case R_PPC64_PLT32
:
10114 case R_PPC64_PLT64
:
10115 /* Relocation is to the entry for this symbol in the
10116 procedure linkage table. */
10118 /* Resolve a PLT reloc against a local symbol directly,
10119 without using the procedure linkage table. */
10123 /* It's possible that we didn't make a PLT entry for this
10124 symbol. This happens when statically linking PIC code,
10125 or when using -Bsymbolic. Go find a match if there is a
10127 if (htab
->plt
!= NULL
)
10129 struct plt_entry
*ent
;
10130 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10131 if (ent
->addend
== rel
->r_addend
10132 && ent
->plt
.offset
!= (bfd_vma
) -1)
10134 relocation
= (htab
->plt
->output_section
->vma
10135 + htab
->plt
->output_offset
10136 + ent
->plt
.offset
);
10137 unresolved_reloc
= FALSE
;
10143 /* Relocation value is TOC base. */
10144 relocation
= TOCstart
;
10146 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10147 else if (unresolved_reloc
)
10149 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10150 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10152 unresolved_reloc
= TRUE
;
10155 /* TOC16 relocs. We want the offset relative to the TOC base,
10156 which is the address of the start of the TOC plus 0x8000.
10157 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10159 case R_PPC64_TOC16
:
10160 case R_PPC64_TOC16_LO
:
10161 case R_PPC64_TOC16_HI
:
10162 case R_PPC64_TOC16_DS
:
10163 case R_PPC64_TOC16_LO_DS
:
10164 case R_PPC64_TOC16_HA
:
10165 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10168 /* Relocate against the beginning of the section. */
10169 case R_PPC64_SECTOFF
:
10170 case R_PPC64_SECTOFF_LO
:
10171 case R_PPC64_SECTOFF_HI
:
10172 case R_PPC64_SECTOFF_DS
:
10173 case R_PPC64_SECTOFF_LO_DS
:
10174 case R_PPC64_SECTOFF_HA
:
10176 addend
-= sec
->output_section
->vma
;
10179 case R_PPC64_REL14
:
10180 case R_PPC64_REL14_BRNTAKEN
:
10181 case R_PPC64_REL14_BRTAKEN
:
10182 case R_PPC64_REL24
:
10185 case R_PPC64_TPREL16
:
10186 case R_PPC64_TPREL16_LO
:
10187 case R_PPC64_TPREL16_HI
:
10188 case R_PPC64_TPREL16_HA
:
10189 case R_PPC64_TPREL16_DS
:
10190 case R_PPC64_TPREL16_LO_DS
:
10191 case R_PPC64_TPREL16_HIGHER
:
10192 case R_PPC64_TPREL16_HIGHERA
:
10193 case R_PPC64_TPREL16_HIGHEST
:
10194 case R_PPC64_TPREL16_HIGHESTA
:
10195 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10197 /* The TPREL16 relocs shouldn't really be used in shared
10198 libs as they will result in DT_TEXTREL being set, but
10199 support them anyway. */
10203 case R_PPC64_DTPREL16
:
10204 case R_PPC64_DTPREL16_LO
:
10205 case R_PPC64_DTPREL16_HI
:
10206 case R_PPC64_DTPREL16_HA
:
10207 case R_PPC64_DTPREL16_DS
:
10208 case R_PPC64_DTPREL16_LO_DS
:
10209 case R_PPC64_DTPREL16_HIGHER
:
10210 case R_PPC64_DTPREL16_HIGHERA
:
10211 case R_PPC64_DTPREL16_HIGHEST
:
10212 case R_PPC64_DTPREL16_HIGHESTA
:
10213 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10216 case R_PPC64_DTPMOD64
:
10221 case R_PPC64_TPREL64
:
10222 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10225 case R_PPC64_DTPREL64
:
10226 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10229 /* Relocations that may need to be propagated if this is a
10231 case R_PPC64_REL30
:
10232 case R_PPC64_REL32
:
10233 case R_PPC64_REL64
:
10234 case R_PPC64_ADDR14
:
10235 case R_PPC64_ADDR14_BRNTAKEN
:
10236 case R_PPC64_ADDR14_BRTAKEN
:
10237 case R_PPC64_ADDR16
:
10238 case R_PPC64_ADDR16_DS
:
10239 case R_PPC64_ADDR16_HA
:
10240 case R_PPC64_ADDR16_HI
:
10241 case R_PPC64_ADDR16_HIGHER
:
10242 case R_PPC64_ADDR16_HIGHERA
:
10243 case R_PPC64_ADDR16_HIGHEST
:
10244 case R_PPC64_ADDR16_HIGHESTA
:
10245 case R_PPC64_ADDR16_LO
:
10246 case R_PPC64_ADDR16_LO_DS
:
10247 case R_PPC64_ADDR24
:
10248 case R_PPC64_ADDR32
:
10249 case R_PPC64_ADDR64
:
10250 case R_PPC64_UADDR16
:
10251 case R_PPC64_UADDR32
:
10252 case R_PPC64_UADDR64
:
10253 /* r_symndx will be zero only for relocs against symbols
10254 from removed linkonce sections, or sections discarded by
10255 a linker script. */
10262 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10265 if (NO_OPD_RELOCS
&& is_opd
)
10270 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10271 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10272 && (MUST_BE_DYN_RELOC (r_type
)
10273 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10274 || (ELIMINATE_COPY_RELOCS
10277 && h
->elf
.dynindx
!= -1
10278 && !h
->elf
.non_got_ref
10279 && h
->elf
.def_dynamic
10280 && !h
->elf
.def_regular
))
10282 Elf_Internal_Rela outrel
;
10283 bfd_boolean skip
, relocate
;
10288 /* When generating a dynamic object, these relocations
10289 are copied into the output file to be resolved at run
10295 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10296 input_section
, rel
->r_offset
);
10297 if (out_off
== (bfd_vma
) -1)
10299 else if (out_off
== (bfd_vma
) -2)
10300 skip
= TRUE
, relocate
= TRUE
;
10301 out_off
+= (input_section
->output_section
->vma
10302 + input_section
->output_offset
);
10303 outrel
.r_offset
= out_off
;
10304 outrel
.r_addend
= rel
->r_addend
;
10306 /* Optimize unaligned reloc use. */
10307 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10308 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10309 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10310 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10311 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10312 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10313 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10314 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10315 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10318 memset (&outrel
, 0, sizeof outrel
);
10319 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10321 && r_type
!= R_PPC64_TOC
)
10322 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10325 /* This symbol is local, or marked to become local,
10326 or this is an opd section reloc which must point
10327 at a local function. */
10328 outrel
.r_addend
+= relocation
;
10329 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10331 if (is_opd
&& h
!= NULL
)
10333 /* Lie about opd entries. This case occurs
10334 when building shared libraries and we
10335 reference a function in another shared
10336 lib. The same thing happens for a weak
10337 definition in an application that's
10338 overridden by a strong definition in a
10339 shared lib. (I believe this is a generic
10340 bug in binutils handling of weak syms.)
10341 In these cases we won't use the opd
10342 entry in this lib. */
10343 unresolved_reloc
= FALSE
;
10345 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10347 /* We need to relocate .opd contents for ld.so.
10348 Prelink also wants simple and consistent rules
10349 for relocs. This make all RELATIVE relocs have
10350 *r_offset equal to r_addend. */
10357 if (bfd_is_abs_section (sec
))
10359 else if (sec
== NULL
|| sec
->owner
== NULL
)
10361 bfd_set_error (bfd_error_bad_value
);
10368 osec
= sec
->output_section
;
10369 indx
= elf_section_data (osec
)->dynindx
;
10371 /* We are turning this relocation into one
10372 against a section symbol, so subtract out
10373 the output section's address but not the
10374 offset of the input section in the output
10376 outrel
.r_addend
-= osec
->vma
;
10379 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10383 sreloc
= elf_section_data (input_section
)->sreloc
;
10384 if (sreloc
== NULL
)
10387 loc
= sreloc
->contents
;
10388 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10389 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10391 /* If this reloc is against an external symbol, it will
10392 be computed at runtime, so there's no need to do
10393 anything now. However, for the sake of prelink ensure
10394 that the section contents are a known value. */
10397 unresolved_reloc
= FALSE
;
10398 /* The value chosen here is quite arbitrary as ld.so
10399 ignores section contents except for the special
10400 case of .opd where the contents might be accessed
10401 before relocation. Choose zero, as that won't
10402 cause reloc overflow. */
10405 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10406 to improve backward compatibility with older
10408 if (r_type
== R_PPC64_ADDR64
)
10409 addend
= outrel
.r_addend
;
10410 /* Adjust pc_relative relocs to have zero in *r_offset. */
10411 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
10412 addend
= (input_section
->output_section
->vma
10413 + input_section
->output_offset
10420 case R_PPC64_GLOB_DAT
:
10421 case R_PPC64_JMP_SLOT
:
10422 case R_PPC64_RELATIVE
:
10423 /* We shouldn't ever see these dynamic relocs in relocatable
10425 /* Fall through. */
10427 case R_PPC64_PLTGOT16
:
10428 case R_PPC64_PLTGOT16_DS
:
10429 case R_PPC64_PLTGOT16_HA
:
10430 case R_PPC64_PLTGOT16_HI
:
10431 case R_PPC64_PLTGOT16_LO
:
10432 case R_PPC64_PLTGOT16_LO_DS
:
10433 case R_PPC64_PLTREL32
:
10434 case R_PPC64_PLTREL64
:
10435 /* These ones haven't been implemented yet. */
10437 (*_bfd_error_handler
)
10438 (_("%B: relocation %s is not supported for symbol %s."),
10440 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
10442 bfd_set_error (bfd_error_invalid_operation
);
10447 /* Do any further special processing. */
10453 case R_PPC64_ADDR16_HA
:
10454 case R_PPC64_ADDR16_HIGHERA
:
10455 case R_PPC64_ADDR16_HIGHESTA
:
10456 case R_PPC64_GOT16_HA
:
10457 case R_PPC64_PLTGOT16_HA
:
10458 case R_PPC64_PLT16_HA
:
10459 case R_PPC64_TOC16_HA
:
10460 case R_PPC64_SECTOFF_HA
:
10461 case R_PPC64_TPREL16_HA
:
10462 case R_PPC64_DTPREL16_HA
:
10463 case R_PPC64_GOT_TLSGD16_HA
:
10464 case R_PPC64_GOT_TLSLD16_HA
:
10465 case R_PPC64_GOT_TPREL16_HA
:
10466 case R_PPC64_GOT_DTPREL16_HA
:
10467 case R_PPC64_TPREL16_HIGHER
:
10468 case R_PPC64_TPREL16_HIGHERA
:
10469 case R_PPC64_TPREL16_HIGHEST
:
10470 case R_PPC64_TPREL16_HIGHESTA
:
10471 case R_PPC64_DTPREL16_HIGHER
:
10472 case R_PPC64_DTPREL16_HIGHERA
:
10473 case R_PPC64_DTPREL16_HIGHEST
:
10474 case R_PPC64_DTPREL16_HIGHESTA
:
10475 /* It's just possible that this symbol is a weak symbol
10476 that's not actually defined anywhere. In that case,
10477 'sec' would be NULL, and we should leave the symbol
10478 alone (it will be set to zero elsewhere in the link). */
10480 /* Add 0x10000 if sign bit in 0:15 is set.
10481 Bits 0:15 are not used. */
10485 case R_PPC64_ADDR16_DS
:
10486 case R_PPC64_ADDR16_LO_DS
:
10487 case R_PPC64_GOT16_DS
:
10488 case R_PPC64_GOT16_LO_DS
:
10489 case R_PPC64_PLT16_LO_DS
:
10490 case R_PPC64_SECTOFF_DS
:
10491 case R_PPC64_SECTOFF_LO_DS
:
10492 case R_PPC64_TOC16_DS
:
10493 case R_PPC64_TOC16_LO_DS
:
10494 case R_PPC64_PLTGOT16_DS
:
10495 case R_PPC64_PLTGOT16_LO_DS
:
10496 case R_PPC64_GOT_TPREL16_DS
:
10497 case R_PPC64_GOT_TPREL16_LO_DS
:
10498 case R_PPC64_GOT_DTPREL16_DS
:
10499 case R_PPC64_GOT_DTPREL16_LO_DS
:
10500 case R_PPC64_TPREL16_DS
:
10501 case R_PPC64_TPREL16_LO_DS
:
10502 case R_PPC64_DTPREL16_DS
:
10503 case R_PPC64_DTPREL16_LO_DS
:
10504 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
10506 /* If this reloc is against an lq insn, then the value must be
10507 a multiple of 16. This is somewhat of a hack, but the
10508 "correct" way to do this by defining _DQ forms of all the
10509 _DS relocs bloats all reloc switches in this file. It
10510 doesn't seem to make much sense to use any of these relocs
10511 in data, so testing the insn should be safe. */
10512 if ((insn
& (0x3f << 26)) == (56u << 26))
10514 if (((relocation
+ addend
) & mask
) != 0)
10516 (*_bfd_error_handler
)
10517 (_("%B: error: relocation %s not a multiple of %d"),
10519 ppc64_elf_howto_table
[r_type
]->name
,
10521 bfd_set_error (bfd_error_bad_value
);
10528 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10529 because such sections are not SEC_ALLOC and thus ld.so will
10530 not process them. */
10531 if (unresolved_reloc
10532 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
10533 && h
->elf
.def_dynamic
))
10535 (*_bfd_error_handler
)
10536 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10539 (long) rel
->r_offset
,
10540 ppc64_elf_howto_table
[(int) r_type
]->name
,
10541 h
->elf
.root
.root
.string
);
10545 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
10553 if (r
!= bfd_reloc_ok
)
10555 if (sym_name
== NULL
)
10556 sym_name
= "(null)";
10557 if (r
== bfd_reloc_overflow
)
10562 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10563 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
10565 /* Assume this is a call protected by other code that
10566 detects the symbol is undefined. If this is the case,
10567 we can safely ignore the overflow. If not, the
10568 program is hosed anyway, and a little warning isn't
10574 if (!((*info
->callbacks
->reloc_overflow
)
10575 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
10576 ppc64_elf_howto_table
[r_type
]->name
,
10577 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
10582 (*_bfd_error_handler
)
10583 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10586 (long) rel
->r_offset
,
10587 ppc64_elf_howto_table
[r_type
]->name
,
10595 /* If we're emitting relocations, then shortly after this function
10596 returns, reloc offsets and addends for this section will be
10597 adjusted. Worse, reloc symbol indices will be for the output
10598 file rather than the input. Save a copy of the relocs for
10599 opd_entry_value. */
10600 if (is_opd
&& info
->emitrelocations
)
10603 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
10604 rel
= bfd_alloc (input_bfd
, amt
);
10605 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
10606 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
10609 memcpy (rel
, relocs
, amt
);
10614 /* Adjust the value of any local symbols in opd sections. */
10617 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
10618 const char *name ATTRIBUTE_UNUSED
,
10619 Elf_Internal_Sym
*elfsym
,
10620 asection
*input_sec
,
10621 struct elf_link_hash_entry
*h
)
10623 long *opd_adjust
, adjust
;
10629 opd_adjust
= get_opd_info (input_sec
);
10630 if (opd_adjust
== NULL
)
10633 value
= elfsym
->st_value
- input_sec
->output_offset
;
10634 if (!info
->relocatable
)
10635 value
-= input_sec
->output_section
->vma
;
10637 adjust
= opd_adjust
[value
/ 8];
10639 elfsym
->st_value
= 0;
10641 elfsym
->st_value
+= adjust
;
10645 /* Finish up dynamic symbol handling. We set the contents of various
10646 dynamic sections here. */
10649 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10650 struct bfd_link_info
*info
,
10651 struct elf_link_hash_entry
*h
,
10652 Elf_Internal_Sym
*sym
)
10654 struct ppc_link_hash_table
*htab
;
10656 struct plt_entry
*ent
;
10657 Elf_Internal_Rela rela
;
10660 htab
= ppc_hash_table (info
);
10661 dynobj
= htab
->elf
.dynobj
;
10663 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10664 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10666 /* This symbol has an entry in the procedure linkage
10667 table. Set it up. */
10669 if (htab
->plt
== NULL
10670 || htab
->relplt
== NULL
10671 || htab
->glink
== NULL
)
10674 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10675 fill in the PLT entry. */
10676 rela
.r_offset
= (htab
->plt
->output_section
->vma
10677 + htab
->plt
->output_offset
10678 + ent
->plt
.offset
);
10679 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
10680 rela
.r_addend
= ent
->addend
;
10682 loc
= htab
->relplt
->contents
;
10683 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
10684 * sizeof (Elf64_External_Rela
));
10685 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10690 Elf_Internal_Rela rela
;
10693 /* This symbol needs a copy reloc. Set it up. */
10695 if (h
->dynindx
== -1
10696 || (h
->root
.type
!= bfd_link_hash_defined
10697 && h
->root
.type
!= bfd_link_hash_defweak
)
10698 || htab
->relbss
== NULL
)
10701 rela
.r_offset
= (h
->root
.u
.def
.value
10702 + h
->root
.u
.def
.section
->output_section
->vma
10703 + h
->root
.u
.def
.section
->output_offset
);
10704 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
10706 loc
= htab
->relbss
->contents
;
10707 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
10708 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
10711 /* Mark some specially defined symbols as absolute. */
10712 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
10713 sym
->st_shndx
= SHN_ABS
;
10718 /* Used to decide how to sort relocs in an optimal manner for the
10719 dynamic linker, before writing them out. */
10721 static enum elf_reloc_type_class
10722 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
10724 enum elf_ppc64_reloc_type r_type
;
10726 r_type
= ELF64_R_TYPE (rela
->r_info
);
10729 case R_PPC64_RELATIVE
:
10730 return reloc_class_relative
;
10731 case R_PPC64_JMP_SLOT
:
10732 return reloc_class_plt
;
10734 return reloc_class_copy
;
10736 return reloc_class_normal
;
10740 /* Finish up the dynamic sections. */
10743 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
10744 struct bfd_link_info
*info
)
10746 struct ppc_link_hash_table
*htab
;
10750 htab
= ppc_hash_table (info
);
10751 dynobj
= htab
->elf
.dynobj
;
10752 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10754 if (htab
->elf
.dynamic_sections_created
)
10756 Elf64_External_Dyn
*dyncon
, *dynconend
;
10758 if (sdyn
== NULL
|| htab
->got
== NULL
)
10761 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
10762 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10763 for (; dyncon
< dynconend
; dyncon
++)
10765 Elf_Internal_Dyn dyn
;
10768 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10775 case DT_PPC64_GLINK
:
10777 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10778 /* We stupidly defined DT_PPC64_GLINK to be the start
10779 of glink rather than the first entry point, which is
10780 what ld.so needs, and now have a bigger stub to
10781 support automatic multiple TOCs. */
10782 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
10786 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10789 dyn
.d_un
.d_ptr
= s
->vma
;
10792 case DT_PPC64_OPDSZ
:
10793 s
= bfd_get_section_by_name (output_bfd
, ".opd");
10796 dyn
.d_un
.d_val
= s
->size
;
10801 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10806 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10810 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10814 /* Don't count procedure linkage table relocs in the
10815 overall reloc count. */
10819 dyn
.d_un
.d_val
-= s
->size
;
10823 /* We may not be using the standard ELF linker script.
10824 If .rela.plt is the first .rela section, we adjust
10825 DT_RELA to not include it. */
10829 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
10831 dyn
.d_un
.d_ptr
+= s
->size
;
10835 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10839 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
10841 /* Fill in the first entry in the global offset table.
10842 We use it to hold the link-time TOCbase. */
10843 bfd_put_64 (output_bfd
,
10844 elf_gp (output_bfd
) + TOC_BASE_OFF
,
10845 htab
->got
->contents
);
10847 /* Set .got entry size. */
10848 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
10851 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
10853 /* Set .plt entry size. */
10854 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
10858 /* We need to handle writing out multiple GOT sections ourselves,
10859 since we didn't add them to DYNOBJ. We know dynobj is the first
10861 while ((dynobj
= dynobj
->link_next
) != NULL
)
10865 if (!is_ppc64_elf_target (dynobj
->xvec
))
10868 s
= ppc64_elf_tdata (dynobj
)->got
;
10871 && s
->output_section
!= bfd_abs_section_ptr
10872 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10873 s
->contents
, s
->output_offset
,
10876 s
= ppc64_elf_tdata (dynobj
)->relgot
;
10879 && s
->output_section
!= bfd_abs_section_ptr
10880 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
10881 s
->contents
, s
->output_offset
,
10889 #include "elf64-target.h"