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_brtaken_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_toc_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc64_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
55 #define TARGET_LITTLE_NAME "elf64-powerpcle"
56 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
57 #define TARGET_BIG_NAME "elf64-powerpc"
58 #define ELF_ARCH bfd_arch_powerpc
59 #define ELF_MACHINE_CODE EM_PPC64
60 #define ELF_MAXPAGESIZE 0x10000
61 #define elf_info_to_howto ppc64_elf_info_to_howto
63 #define elf_backend_want_got_sym 0
64 #define elf_backend_want_plt_sym 0
65 #define elf_backend_plt_alignment 3
66 #define elf_backend_plt_not_loaded 1
67 #define elf_backend_got_symbol_offset 0
68 #define elf_backend_got_header_size 8
69 #define elf_backend_can_gc_sections 1
70 #define elf_backend_can_refcount 1
71 #define elf_backend_rela_normal 1
73 #define bfd_elf64_mkobject ppc64_elf_mkobject
74 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
75 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
76 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
77 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
78 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
80 #define elf_backend_object_p ppc64_elf_object_p
81 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
82 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
83 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
84 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
85 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
86 #define elf_backend_check_directives ppc64_elf_check_directives
87 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
88 #define elf_backend_check_relocs ppc64_elf_check_relocs
89 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
90 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
91 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
92 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
93 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
94 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
95 #define elf_backend_relocate_section ppc64_elf_relocate_section
96 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
97 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
98 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
99 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
100 #define elf_backend_special_sections ppc64_elf_special_sections
102 /* The name of the dynamic interpreter. This is put in the .interp
104 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
106 /* The size in bytes of an entry in the procedure linkage table. */
107 #define PLT_ENTRY_SIZE 24
109 /* The initial size of the plt reserved for the dynamic linker. */
110 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
112 /* TOC base pointers offset from start of TOC. */
113 #define TOC_BASE_OFF 0x8000
115 /* Offset of tp and dtp pointers from start of TLS block. */
116 #define TP_OFFSET 0x7000
117 #define DTP_OFFSET 0x8000
119 /* .plt call stub instructions. The normal stub is like this, but
120 sometimes the .plt entry crosses a 64k boundary and we need to
121 insert an addis to adjust r12. */
122 #define PLT_CALL_STUB_SIZE (7*4)
123 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
124 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
125 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
126 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
127 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
128 /* ld %r11,xxx+16@l(%r12) */
129 #define BCTR 0x4e800420 /* bctr */
132 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
133 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
135 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
137 /* glink call stub instructions. We enter with the index in R0, and the
138 address of glink entry in CTR. From that, we can calculate PLT0. */
139 #define GLINK_CALL_STUB_SIZE (16*4)
140 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
141 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
142 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
143 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
144 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
145 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
146 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
147 /* sub %r12,%r12,%r11 */
148 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
150 /* ld %r11,xxx@l(%r12) */
151 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
154 /* ld %r11,16(%r12) */
158 #define NOP 0x60000000
160 /* Some other nops. */
161 #define CROR_151515 0x4def7b82
162 #define CROR_313131 0x4ffffb82
164 /* .glink entries for the first 32k functions are two instructions. */
165 #define LI_R0_0 0x38000000 /* li %r0,0 */
166 #define B_DOT 0x48000000 /* b . */
168 /* After that, we need two instructions to load the index, followed by
170 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
171 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
173 /* Instructions to save and restore floating point regs. */
174 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
175 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
176 #define BLR 0x4e800020 /* blr */
178 /* Since .opd is an array of descriptors and each entry will end up
179 with identical R_PPC64_RELATIVE relocs, there is really no need to
180 propagate .opd relocs; The dynamic linker should be taught to
181 relocate .opd without reloc entries. */
182 #ifndef NO_OPD_RELOCS
183 #define NO_OPD_RELOCS 0
186 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
188 /* Relocation HOWTO's. */
189 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
191 static reloc_howto_type ppc64_elf_howto_raw
[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC64_NONE
, /* type */
195 2, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE
, /* pc_relative */
199 complain_overflow_dont
, /* complain_on_overflow */
200 bfd_elf_generic_reloc
, /* special_function */
201 "R_PPC64_NONE", /* name */
202 FALSE
, /* partial_inplace */
205 FALSE
), /* pcrel_offset */
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC64_ADDR32
, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE
, /* pc_relative */
214 complain_overflow_bitfield
, /* complain_on_overflow */
215 bfd_elf_generic_reloc
, /* special_function */
216 "R_PPC64_ADDR32", /* name */
217 FALSE
, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE
), /* pcrel_offset */
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC64_ADDR24
, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE
, /* pc_relative */
230 complain_overflow_bitfield
, /* complain_on_overflow */
231 bfd_elf_generic_reloc
, /* special_function */
232 "R_PPC64_ADDR24", /* name */
233 FALSE
, /* partial_inplace */
235 0x03fffffc, /* dst_mask */
236 FALSE
), /* pcrel_offset */
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC64_ADDR16
, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE
, /* pc_relative */
245 complain_overflow_bitfield
, /* complain_on_overflow */
246 bfd_elf_generic_reloc
, /* special_function */
247 "R_PPC64_ADDR16", /* name */
248 FALSE
, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE
), /* pcrel_offset */
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC64_ADDR16_LO
, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE
, /* pc_relative */
260 complain_overflow_dont
,/* complain_on_overflow */
261 bfd_elf_generic_reloc
, /* special_function */
262 "R_PPC64_ADDR16_LO", /* name */
263 FALSE
, /* partial_inplace */
265 0xffff, /* dst_mask */
266 FALSE
), /* pcrel_offset */
268 /* Bits 16-31 of an address. */
269 HOWTO (R_PPC64_ADDR16_HI
, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_PPC64_ADDR16_HI", /* name */
278 FALSE
, /* partial_inplace */
280 0xffff, /* dst_mask */
281 FALSE
), /* pcrel_offset */
283 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
284 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC64_ADDR16_HA
, /* type */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE
, /* pc_relative */
291 complain_overflow_dont
, /* complain_on_overflow */
292 ppc64_elf_ha_reloc
, /* special_function */
293 "R_PPC64_ADDR16_HA", /* name */
294 FALSE
, /* partial_inplace */
296 0xffff, /* dst_mask */
297 FALSE
), /* pcrel_offset */
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC64_ADDR14
, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_bitfield
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_PPC64_ADDR14", /* name */
310 FALSE
, /* partial_inplace */
312 0x0000fffc, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_bitfield
, /* complain_on_overflow */
325 ppc64_elf_brtaken_reloc
, /* special_function */
326 "R_PPC64_ADDR14_BRTAKEN",/* name */
327 FALSE
, /* partial_inplace */
329 0x0000fffc, /* dst_mask */
330 FALSE
), /* pcrel_offset */
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_bitfield
, /* complain_on_overflow */
342 ppc64_elf_brtaken_reloc
, /* special_function */
343 "R_PPC64_ADDR14_BRNTAKEN",/* name */
344 FALSE
, /* partial_inplace */
346 0x0000fffc, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC64_REL24
, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 TRUE
, /* pc_relative */
356 complain_overflow_signed
, /* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_PPC64_REL24", /* name */
359 FALSE
, /* partial_inplace */
361 0x03fffffc, /* dst_mask */
362 TRUE
), /* pcrel_offset */
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC64_REL14
, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 TRUE
, /* pc_relative */
371 complain_overflow_signed
, /* complain_on_overflow */
372 bfd_elf_generic_reloc
, /* special_function */
373 "R_PPC64_REL14", /* name */
374 FALSE
, /* partial_inplace */
376 0x0000fffc, /* dst_mask */
377 TRUE
), /* pcrel_offset */
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
382 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 TRUE
, /* pc_relative */
388 complain_overflow_signed
, /* complain_on_overflow */
389 ppc64_elf_brtaken_reloc
, /* special_function */
390 "R_PPC64_REL14_BRTAKEN", /* name */
391 FALSE
, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 TRUE
), /* pcrel_offset */
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
399 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 TRUE
, /* pc_relative */
405 complain_overflow_signed
, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc
, /* special_function */
407 "R_PPC64_REL14_BRNTAKEN",/* name */
408 FALSE
, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 TRUE
), /* pcrel_offset */
413 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
415 HOWTO (R_PPC64_GOT16
, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE
, /* pc_relative */
421 complain_overflow_signed
, /* complain_on_overflow */
422 ppc64_elf_unhandled_reloc
, /* special_function */
423 "R_PPC64_GOT16", /* name */
424 FALSE
, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE
), /* pcrel_offset */
429 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
431 HOWTO (R_PPC64_GOT16_LO
, /* type */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
435 FALSE
, /* pc_relative */
437 complain_overflow_dont
, /* complain_on_overflow */
438 ppc64_elf_unhandled_reloc
, /* special_function */
439 "R_PPC64_GOT16_LO", /* name */
440 FALSE
, /* partial_inplace */
442 0xffff, /* dst_mask */
443 FALSE
), /* pcrel_offset */
445 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
447 HOWTO (R_PPC64_GOT16_HI
, /* type */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_dont
,/* complain_on_overflow */
454 ppc64_elf_unhandled_reloc
, /* special_function */
455 "R_PPC64_GOT16_HI", /* name */
456 FALSE
, /* partial_inplace */
458 0xffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
463 HOWTO (R_PPC64_GOT16_HA
, /* type */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
467 FALSE
, /* pc_relative */
469 complain_overflow_dont
,/* complain_on_overflow */
470 ppc64_elf_unhandled_reloc
, /* special_function */
471 "R_PPC64_GOT16_HA", /* name */
472 FALSE
, /* partial_inplace */
474 0xffff, /* dst_mask */
475 FALSE
), /* pcrel_offset */
477 /* This is used only by the dynamic linker. The symbol should exist
478 both in the object being run and in some shared library. The
479 dynamic linker copies the data addressed by the symbol from the
480 shared library into the object, because the object being
481 run has to have the data at some particular address. */
482 HOWTO (R_PPC64_COPY
, /* type */
484 0, /* this one is variable size */
486 FALSE
, /* pc_relative */
488 complain_overflow_dont
, /* complain_on_overflow */
489 ppc64_elf_unhandled_reloc
, /* special_function */
490 "R_PPC64_COPY", /* name */
491 FALSE
, /* partial_inplace */
494 FALSE
), /* pcrel_offset */
496 /* Like R_PPC64_ADDR64, but used when setting global offset table
498 HOWTO (R_PPC64_GLOB_DAT
, /* type */
500 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
502 FALSE
, /* pc_relative */
504 complain_overflow_dont
, /* complain_on_overflow */
505 ppc64_elf_unhandled_reloc
, /* special_function */
506 "R_PPC64_GLOB_DAT", /* name */
507 FALSE
, /* partial_inplace */
509 ONES (64), /* dst_mask */
510 FALSE
), /* pcrel_offset */
512 /* Created by the link editor. Marks a procedure linkage table
513 entry for a symbol. */
514 HOWTO (R_PPC64_JMP_SLOT
, /* type */
516 0, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE
, /* pc_relative */
520 complain_overflow_dont
, /* complain_on_overflow */
521 ppc64_elf_unhandled_reloc
, /* special_function */
522 "R_PPC64_JMP_SLOT", /* name */
523 FALSE
, /* partial_inplace */
526 FALSE
), /* pcrel_offset */
528 /* Used only by the dynamic linker. When the object is run, this
529 doubleword64 is set to the load address of the object, plus the
531 HOWTO (R_PPC64_RELATIVE
, /* type */
533 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
535 FALSE
, /* pc_relative */
537 complain_overflow_dont
, /* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_PPC64_RELATIVE", /* name */
540 FALSE
, /* partial_inplace */
542 ONES (64), /* dst_mask */
543 FALSE
), /* pcrel_offset */
545 /* Like R_PPC64_ADDR32, but may be unaligned. */
546 HOWTO (R_PPC64_UADDR32
, /* type */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE
, /* pc_relative */
552 complain_overflow_bitfield
, /* complain_on_overflow */
553 bfd_elf_generic_reloc
, /* special_function */
554 "R_PPC64_UADDR32", /* name */
555 FALSE
, /* partial_inplace */
557 0xffffffff, /* dst_mask */
558 FALSE
), /* pcrel_offset */
560 /* Like R_PPC64_ADDR16, but may be unaligned. */
561 HOWTO (R_PPC64_UADDR16
, /* type */
563 1, /* size (0 = byte, 1 = short, 2 = long) */
565 FALSE
, /* pc_relative */
567 complain_overflow_bitfield
, /* complain_on_overflow */
568 bfd_elf_generic_reloc
, /* special_function */
569 "R_PPC64_UADDR16", /* name */
570 FALSE
, /* partial_inplace */
572 0xffff, /* dst_mask */
573 FALSE
), /* pcrel_offset */
575 /* 32-bit PC relative. */
576 HOWTO (R_PPC64_REL32
, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE
, /* pc_relative */
582 /* FIXME: Verify. Was complain_overflow_bitfield. */
583 complain_overflow_signed
, /* complain_on_overflow */
584 bfd_elf_generic_reloc
, /* special_function */
585 "R_PPC64_REL32", /* name */
586 FALSE
, /* partial_inplace */
588 0xffffffff, /* dst_mask */
589 TRUE
), /* pcrel_offset */
591 /* 32-bit relocation to the symbol's procedure linkage table. */
592 HOWTO (R_PPC64_PLT32
, /* type */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
596 FALSE
, /* pc_relative */
598 complain_overflow_bitfield
, /* complain_on_overflow */
599 ppc64_elf_unhandled_reloc
, /* special_function */
600 "R_PPC64_PLT32", /* name */
601 FALSE
, /* partial_inplace */
603 0xffffffff, /* dst_mask */
604 FALSE
), /* pcrel_offset */
606 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
607 FIXME: R_PPC64_PLTREL32 not supported. */
608 HOWTO (R_PPC64_PLTREL32
, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 TRUE
, /* pc_relative */
614 complain_overflow_signed
, /* complain_on_overflow */
615 bfd_elf_generic_reloc
, /* special_function */
616 "R_PPC64_PLTREL32", /* name */
617 FALSE
, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 TRUE
), /* pcrel_offset */
622 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
624 HOWTO (R_PPC64_PLT16_LO
, /* type */
626 1, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE
, /* pc_relative */
630 complain_overflow_dont
, /* complain_on_overflow */
631 ppc64_elf_unhandled_reloc
, /* special_function */
632 "R_PPC64_PLT16_LO", /* name */
633 FALSE
, /* partial_inplace */
635 0xffff, /* dst_mask */
636 FALSE
), /* pcrel_offset */
638 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
640 HOWTO (R_PPC64_PLT16_HI
, /* type */
642 1, /* size (0 = byte, 1 = short, 2 = long) */
644 FALSE
, /* pc_relative */
646 complain_overflow_dont
, /* complain_on_overflow */
647 ppc64_elf_unhandled_reloc
, /* special_function */
648 "R_PPC64_PLT16_HI", /* name */
649 FALSE
, /* partial_inplace */
651 0xffff, /* dst_mask */
652 FALSE
), /* pcrel_offset */
654 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
656 HOWTO (R_PPC64_PLT16_HA
, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 FALSE
, /* pc_relative */
662 complain_overflow_dont
, /* complain_on_overflow */
663 ppc64_elf_unhandled_reloc
, /* special_function */
664 "R_PPC64_PLT16_HA", /* name */
665 FALSE
, /* partial_inplace */
667 0xffff, /* dst_mask */
668 FALSE
), /* pcrel_offset */
670 /* 16-bit section relative relocation. */
671 HOWTO (R_PPC64_SECTOFF
, /* type */
673 1, /* size (0 = byte, 1 = short, 2 = long) */
675 FALSE
, /* pc_relative */
677 complain_overflow_bitfield
, /* complain_on_overflow */
678 ppc64_elf_sectoff_reloc
, /* special_function */
679 "R_PPC64_SECTOFF", /* name */
680 FALSE
, /* partial_inplace */
682 0xffff, /* dst_mask */
683 FALSE
), /* pcrel_offset */
685 /* Like R_PPC64_SECTOFF, but no overflow warning. */
686 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
688 1, /* size (0 = byte, 1 = short, 2 = long) */
690 FALSE
, /* pc_relative */
692 complain_overflow_dont
, /* complain_on_overflow */
693 ppc64_elf_sectoff_reloc
, /* special_function */
694 "R_PPC64_SECTOFF_LO", /* name */
695 FALSE
, /* partial_inplace */
697 0xffff, /* dst_mask */
698 FALSE
), /* pcrel_offset */
700 /* 16-bit upper half section relative relocation. */
701 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
703 1, /* size (0 = byte, 1 = short, 2 = long) */
705 FALSE
, /* pc_relative */
707 complain_overflow_dont
, /* complain_on_overflow */
708 ppc64_elf_sectoff_reloc
, /* special_function */
709 "R_PPC64_SECTOFF_HI", /* name */
710 FALSE
, /* partial_inplace */
712 0xffff, /* dst_mask */
713 FALSE
), /* pcrel_offset */
715 /* 16-bit upper half adjusted section relative relocation. */
716 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
718 1, /* size (0 = byte, 1 = short, 2 = long) */
720 FALSE
, /* pc_relative */
722 complain_overflow_dont
, /* complain_on_overflow */
723 ppc64_elf_sectoff_ha_reloc
, /* special_function */
724 "R_PPC64_SECTOFF_HA", /* name */
725 FALSE
, /* partial_inplace */
727 0xffff, /* dst_mask */
728 FALSE
), /* pcrel_offset */
730 /* Like R_PPC64_REL24 without touching the two least significant bits. */
731 HOWTO (R_PPC64_REL30
, /* type */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
735 TRUE
, /* pc_relative */
737 complain_overflow_dont
, /* complain_on_overflow */
738 bfd_elf_generic_reloc
, /* special_function */
739 "R_PPC64_REL30", /* name */
740 FALSE
, /* partial_inplace */
742 0xfffffffc, /* dst_mask */
743 TRUE
), /* pcrel_offset */
745 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
747 /* A standard 64-bit relocation. */
748 HOWTO (R_PPC64_ADDR64
, /* type */
750 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
752 FALSE
, /* pc_relative */
754 complain_overflow_dont
, /* complain_on_overflow */
755 bfd_elf_generic_reloc
, /* special_function */
756 "R_PPC64_ADDR64", /* name */
757 FALSE
, /* partial_inplace */
759 ONES (64), /* dst_mask */
760 FALSE
), /* pcrel_offset */
762 /* The bits 32-47 of an address. */
763 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
765 1, /* size (0 = byte, 1 = short, 2 = long) */
767 FALSE
, /* pc_relative */
769 complain_overflow_dont
, /* complain_on_overflow */
770 bfd_elf_generic_reloc
, /* special_function */
771 "R_PPC64_ADDR16_HIGHER", /* name */
772 FALSE
, /* partial_inplace */
774 0xffff, /* dst_mask */
775 FALSE
), /* pcrel_offset */
777 /* The bits 32-47 of an address, plus 1 if the contents of the low
778 16 bits, treated as a signed number, is negative. */
779 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
781 1, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE
, /* pc_relative */
785 complain_overflow_dont
, /* complain_on_overflow */
786 ppc64_elf_ha_reloc
, /* special_function */
787 "R_PPC64_ADDR16_HIGHERA", /* name */
788 FALSE
, /* partial_inplace */
790 0xffff, /* dst_mask */
791 FALSE
), /* pcrel_offset */
793 /* The bits 48-63 of an address. */
794 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
796 1, /* size (0 = byte, 1 = short, 2 = long) */
798 FALSE
, /* pc_relative */
800 complain_overflow_dont
, /* complain_on_overflow */
801 bfd_elf_generic_reloc
, /* special_function */
802 "R_PPC64_ADDR16_HIGHEST", /* name */
803 FALSE
, /* partial_inplace */
805 0xffff, /* dst_mask */
806 FALSE
), /* pcrel_offset */
808 /* The bits 48-63 of an address, plus 1 if the contents of the low
809 16 bits, treated as a signed number, is negative. */
810 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
812 1, /* size (0 = byte, 1 = short, 2 = long) */
814 FALSE
, /* pc_relative */
816 complain_overflow_dont
, /* complain_on_overflow */
817 ppc64_elf_ha_reloc
, /* special_function */
818 "R_PPC64_ADDR16_HIGHESTA", /* name */
819 FALSE
, /* partial_inplace */
821 0xffff, /* dst_mask */
822 FALSE
), /* pcrel_offset */
824 /* Like ADDR64, but may be unaligned. */
825 HOWTO (R_PPC64_UADDR64
, /* type */
827 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
829 FALSE
, /* pc_relative */
831 complain_overflow_dont
, /* complain_on_overflow */
832 bfd_elf_generic_reloc
, /* special_function */
833 "R_PPC64_UADDR64", /* name */
834 FALSE
, /* partial_inplace */
836 ONES (64), /* dst_mask */
837 FALSE
), /* pcrel_offset */
839 /* 64-bit relative relocation. */
840 HOWTO (R_PPC64_REL64
, /* type */
842 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
844 TRUE
, /* pc_relative */
846 complain_overflow_dont
, /* complain_on_overflow */
847 bfd_elf_generic_reloc
, /* special_function */
848 "R_PPC64_REL64", /* name */
849 FALSE
, /* partial_inplace */
851 ONES (64), /* dst_mask */
852 TRUE
), /* pcrel_offset */
854 /* 64-bit relocation to the symbol's procedure linkage table. */
855 HOWTO (R_PPC64_PLT64
, /* type */
857 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
859 FALSE
, /* pc_relative */
861 complain_overflow_dont
, /* complain_on_overflow */
862 ppc64_elf_unhandled_reloc
, /* special_function */
863 "R_PPC64_PLT64", /* name */
864 FALSE
, /* partial_inplace */
866 ONES (64), /* dst_mask */
867 FALSE
), /* pcrel_offset */
869 /* 64-bit PC relative relocation to the symbol's procedure linkage
871 /* FIXME: R_PPC64_PLTREL64 not supported. */
872 HOWTO (R_PPC64_PLTREL64
, /* type */
874 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
876 TRUE
, /* pc_relative */
878 complain_overflow_dont
, /* complain_on_overflow */
879 ppc64_elf_unhandled_reloc
, /* special_function */
880 "R_PPC64_PLTREL64", /* name */
881 FALSE
, /* partial_inplace */
883 ONES (64), /* dst_mask */
884 TRUE
), /* pcrel_offset */
886 /* 16 bit TOC-relative relocation. */
888 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
889 HOWTO (R_PPC64_TOC16
, /* type */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE
, /* pc_relative */
895 complain_overflow_signed
, /* complain_on_overflow */
896 ppc64_elf_toc_reloc
, /* special_function */
897 "R_PPC64_TOC16", /* name */
898 FALSE
, /* partial_inplace */
900 0xffff, /* dst_mask */
901 FALSE
), /* pcrel_offset */
903 /* 16 bit TOC-relative relocation without overflow. */
905 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
906 HOWTO (R_PPC64_TOC16_LO
, /* type */
908 1, /* size (0 = byte, 1 = short, 2 = long) */
910 FALSE
, /* pc_relative */
912 complain_overflow_dont
, /* complain_on_overflow */
913 ppc64_elf_toc_reloc
, /* special_function */
914 "R_PPC64_TOC16_LO", /* name */
915 FALSE
, /* partial_inplace */
917 0xffff, /* dst_mask */
918 FALSE
), /* pcrel_offset */
920 /* 16 bit TOC-relative relocation, high 16 bits. */
922 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
923 HOWTO (R_PPC64_TOC16_HI
, /* type */
925 1, /* size (0 = byte, 1 = short, 2 = long) */
927 FALSE
, /* pc_relative */
929 complain_overflow_dont
, /* complain_on_overflow */
930 ppc64_elf_toc_reloc
, /* special_function */
931 "R_PPC64_TOC16_HI", /* name */
932 FALSE
, /* partial_inplace */
934 0xffff, /* dst_mask */
935 FALSE
), /* pcrel_offset */
937 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
938 contents of the low 16 bits, treated as a signed number, is
941 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
942 HOWTO (R_PPC64_TOC16_HA
, /* type */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
946 FALSE
, /* pc_relative */
948 complain_overflow_dont
, /* complain_on_overflow */
949 ppc64_elf_toc_ha_reloc
, /* special_function */
950 "R_PPC64_TOC16_HA", /* name */
951 FALSE
, /* partial_inplace */
953 0xffff, /* dst_mask */
954 FALSE
), /* pcrel_offset */
956 /* 64-bit relocation; insert value of TOC base (.TOC.). */
958 /* R_PPC64_TOC 51 doubleword64 .TOC. */
959 HOWTO (R_PPC64_TOC
, /* type */
961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
963 FALSE
, /* pc_relative */
965 complain_overflow_bitfield
, /* complain_on_overflow */
966 ppc64_elf_toc64_reloc
, /* special_function */
967 "R_PPC64_TOC", /* name */
968 FALSE
, /* partial_inplace */
970 ONES (64), /* dst_mask */
971 FALSE
), /* pcrel_offset */
973 /* Like R_PPC64_GOT16, but also informs the link editor that the
974 value to relocate may (!) refer to a PLT entry which the link
975 editor (a) may replace with the symbol value. If the link editor
976 is unable to fully resolve the symbol, it may (b) create a PLT
977 entry and store the address to the new PLT entry in the GOT.
978 This permits lazy resolution of function symbols at run time.
979 The link editor may also skip all of this and just (c) emit a
980 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
981 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
982 HOWTO (R_PPC64_PLTGOT16
, /* type */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE
, /* pc_relative */
988 complain_overflow_signed
, /* complain_on_overflow */
989 ppc64_elf_unhandled_reloc
, /* special_function */
990 "R_PPC64_PLTGOT16", /* name */
991 FALSE
, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE
), /* pcrel_offset */
996 /* Like R_PPC64_PLTGOT16, but without overflow. */
997 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
998 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE
, /* pc_relative */
1004 complain_overflow_dont
, /* complain_on_overflow */
1005 ppc64_elf_unhandled_reloc
, /* special_function */
1006 "R_PPC64_PLTGOT16_LO", /* name */
1007 FALSE
, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE
), /* pcrel_offset */
1012 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1013 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1014 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1015 16, /* rightshift */
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1018 FALSE
, /* pc_relative */
1020 complain_overflow_dont
, /* complain_on_overflow */
1021 ppc64_elf_unhandled_reloc
, /* special_function */
1022 "R_PPC64_PLTGOT16_HI", /* name */
1023 FALSE
, /* partial_inplace */
1025 0xffff, /* dst_mask */
1026 FALSE
), /* pcrel_offset */
1028 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1029 1 if the contents of the low 16 bits, treated as a signed number,
1031 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1032 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE
, /* pc_relative */
1038 complain_overflow_dont
,/* complain_on_overflow */
1039 ppc64_elf_unhandled_reloc
, /* special_function */
1040 "R_PPC64_PLTGOT16_HA", /* name */
1041 FALSE
, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE
), /* pcrel_offset */
1046 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1047 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE
, /* pc_relative */
1053 complain_overflow_bitfield
, /* complain_on_overflow */
1054 bfd_elf_generic_reloc
, /* special_function */
1055 "R_PPC64_ADDR16_DS", /* name */
1056 FALSE
, /* partial_inplace */
1058 0xfffc, /* dst_mask */
1059 FALSE
), /* pcrel_offset */
1061 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1062 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE
, /* pc_relative */
1068 complain_overflow_dont
,/* complain_on_overflow */
1069 bfd_elf_generic_reloc
, /* special_function */
1070 "R_PPC64_ADDR16_LO_DS",/* name */
1071 FALSE
, /* partial_inplace */
1073 0xfffc, /* dst_mask */
1074 FALSE
), /* pcrel_offset */
1076 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1077 HOWTO (R_PPC64_GOT16_DS
, /* type */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 FALSE
, /* pc_relative */
1083 complain_overflow_signed
, /* complain_on_overflow */
1084 ppc64_elf_unhandled_reloc
, /* special_function */
1085 "R_PPC64_GOT16_DS", /* name */
1086 FALSE
, /* partial_inplace */
1088 0xfffc, /* dst_mask */
1089 FALSE
), /* pcrel_offset */
1091 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1092 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1094 1, /* size (0 = byte, 1 = short, 2 = long) */
1096 FALSE
, /* pc_relative */
1098 complain_overflow_dont
, /* complain_on_overflow */
1099 ppc64_elf_unhandled_reloc
, /* special_function */
1100 "R_PPC64_GOT16_LO_DS", /* name */
1101 FALSE
, /* partial_inplace */
1103 0xfffc, /* dst_mask */
1104 FALSE
), /* pcrel_offset */
1106 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1107 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE
, /* pc_relative */
1113 complain_overflow_dont
, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc
, /* special_function */
1115 "R_PPC64_PLT16_LO_DS", /* name */
1116 FALSE
, /* partial_inplace */
1118 0xfffc, /* dst_mask */
1119 FALSE
), /* pcrel_offset */
1121 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE
, /* pc_relative */
1128 complain_overflow_bitfield
, /* complain_on_overflow */
1129 ppc64_elf_sectoff_reloc
, /* special_function */
1130 "R_PPC64_SECTOFF_DS", /* name */
1131 FALSE
, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE
), /* pcrel_offset */
1136 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE
, /* pc_relative */
1143 complain_overflow_dont
, /* complain_on_overflow */
1144 ppc64_elf_sectoff_reloc
, /* special_function */
1145 "R_PPC64_SECTOFF_LO_DS",/* name */
1146 FALSE
, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE
), /* pcrel_offset */
1151 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_TOC16_DS
, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE
, /* pc_relative */
1158 complain_overflow_signed
, /* complain_on_overflow */
1159 ppc64_elf_toc_reloc
, /* special_function */
1160 "R_PPC64_TOC16_DS", /* name */
1161 FALSE
, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE
), /* pcrel_offset */
1166 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE
, /* pc_relative */
1173 complain_overflow_dont
, /* complain_on_overflow */
1174 ppc64_elf_toc_reloc
, /* special_function */
1175 "R_PPC64_TOC16_LO_DS", /* name */
1176 FALSE
, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE
), /* pcrel_offset */
1181 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1182 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1183 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE
, /* pc_relative */
1189 complain_overflow_signed
, /* complain_on_overflow */
1190 ppc64_elf_unhandled_reloc
, /* special_function */
1191 "R_PPC64_PLTGOT16_DS", /* name */
1192 FALSE
, /* partial_inplace */
1194 0xfffc, /* dst_mask */
1195 FALSE
), /* pcrel_offset */
1197 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1198 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1199 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE
, /* pc_relative */
1205 complain_overflow_dont
, /* complain_on_overflow */
1206 ppc64_elf_unhandled_reloc
, /* special_function */
1207 "R_PPC64_PLTGOT16_LO_DS",/* name */
1208 FALSE
, /* partial_inplace */
1210 0xfffc, /* dst_mask */
1211 FALSE
), /* pcrel_offset */
1213 /* Marker reloc for TLS. */
1216 2, /* size (0 = byte, 1 = short, 2 = long) */
1218 FALSE
, /* pc_relative */
1220 complain_overflow_dont
, /* complain_on_overflow */
1221 bfd_elf_generic_reloc
, /* special_function */
1222 "R_PPC64_TLS", /* name */
1223 FALSE
, /* partial_inplace */
1226 FALSE
), /* pcrel_offset */
1228 /* Computes the load module index of the load module that contains the
1229 definition of its TLS sym. */
1230 HOWTO (R_PPC64_DTPMOD64
,
1232 4, /* size (0 = byte, 1 = short, 2 = long) */
1234 FALSE
, /* pc_relative */
1236 complain_overflow_dont
, /* complain_on_overflow */
1237 ppc64_elf_unhandled_reloc
, /* special_function */
1238 "R_PPC64_DTPMOD64", /* name */
1239 FALSE
, /* partial_inplace */
1241 ONES (64), /* dst_mask */
1242 FALSE
), /* pcrel_offset */
1244 /* Computes a dtv-relative displacement, the difference between the value
1245 of sym+add and the base address of the thread-local storage block that
1246 contains the definition of sym, minus 0x8000. */
1247 HOWTO (R_PPC64_DTPREL64
,
1249 4, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE
, /* pc_relative */
1253 complain_overflow_dont
, /* complain_on_overflow */
1254 ppc64_elf_unhandled_reloc
, /* special_function */
1255 "R_PPC64_DTPREL64", /* name */
1256 FALSE
, /* partial_inplace */
1258 ONES (64), /* dst_mask */
1259 FALSE
), /* pcrel_offset */
1261 /* A 16 bit dtprel reloc. */
1262 HOWTO (R_PPC64_DTPREL16
,
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 FALSE
, /* pc_relative */
1268 complain_overflow_signed
, /* complain_on_overflow */
1269 ppc64_elf_unhandled_reloc
, /* special_function */
1270 "R_PPC64_DTPREL16", /* name */
1271 FALSE
, /* partial_inplace */
1273 0xffff, /* dst_mask */
1274 FALSE
), /* pcrel_offset */
1276 /* Like DTPREL16, but no overflow. */
1277 HOWTO (R_PPC64_DTPREL16_LO
,
1279 1, /* size (0 = byte, 1 = short, 2 = long) */
1281 FALSE
, /* pc_relative */
1283 complain_overflow_dont
, /* complain_on_overflow */
1284 ppc64_elf_unhandled_reloc
, /* special_function */
1285 "R_PPC64_DTPREL16_LO", /* name */
1286 FALSE
, /* partial_inplace */
1288 0xffff, /* dst_mask */
1289 FALSE
), /* pcrel_offset */
1291 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1292 HOWTO (R_PPC64_DTPREL16_HI
,
1293 16, /* rightshift */
1294 1, /* size (0 = byte, 1 = short, 2 = long) */
1296 FALSE
, /* pc_relative */
1298 complain_overflow_dont
, /* complain_on_overflow */
1299 ppc64_elf_unhandled_reloc
, /* special_function */
1300 "R_PPC64_DTPREL16_HI", /* name */
1301 FALSE
, /* partial_inplace */
1303 0xffff, /* dst_mask */
1304 FALSE
), /* pcrel_offset */
1306 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1307 HOWTO (R_PPC64_DTPREL16_HA
,
1308 16, /* rightshift */
1309 1, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE
, /* pc_relative */
1313 complain_overflow_dont
, /* complain_on_overflow */
1314 ppc64_elf_unhandled_reloc
, /* special_function */
1315 "R_PPC64_DTPREL16_HA", /* name */
1316 FALSE
, /* partial_inplace */
1318 0xffff, /* dst_mask */
1319 FALSE
), /* pcrel_offset */
1321 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1322 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1323 32, /* rightshift */
1324 1, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_dont
, /* complain_on_overflow */
1329 ppc64_elf_unhandled_reloc
, /* special_function */
1330 "R_PPC64_DTPREL16_HIGHER", /* name */
1331 FALSE
, /* partial_inplace */
1333 0xffff, /* dst_mask */
1334 FALSE
), /* pcrel_offset */
1336 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1337 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1338 32, /* rightshift */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE
, /* pc_relative */
1343 complain_overflow_dont
, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc
, /* special_function */
1345 "R_PPC64_DTPREL16_HIGHERA", /* name */
1346 FALSE
, /* partial_inplace */
1348 0xffff, /* dst_mask */
1349 FALSE
), /* pcrel_offset */
1351 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1352 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1353 48, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_dont
, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc
, /* special_function */
1360 "R_PPC64_DTPREL16_HIGHEST", /* name */
1361 FALSE
, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 FALSE
), /* pcrel_offset */
1366 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1367 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1368 48, /* rightshift */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1371 FALSE
, /* pc_relative */
1373 complain_overflow_dont
, /* complain_on_overflow */
1374 ppc64_elf_unhandled_reloc
, /* special_function */
1375 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1376 FALSE
, /* partial_inplace */
1378 0xffff, /* dst_mask */
1379 FALSE
), /* pcrel_offset */
1381 /* Like DTPREL16, but for insns with a DS field. */
1382 HOWTO (R_PPC64_DTPREL16_DS
,
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1386 FALSE
, /* pc_relative */
1388 complain_overflow_signed
, /* complain_on_overflow */
1389 ppc64_elf_unhandled_reloc
, /* special_function */
1390 "R_PPC64_DTPREL16_DS", /* name */
1391 FALSE
, /* partial_inplace */
1393 0xfffc, /* dst_mask */
1394 FALSE
), /* pcrel_offset */
1396 /* Like DTPREL16_DS, but no overflow. */
1397 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1399 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE
, /* pc_relative */
1403 complain_overflow_dont
, /* complain_on_overflow */
1404 ppc64_elf_unhandled_reloc
, /* special_function */
1405 "R_PPC64_DTPREL16_LO_DS", /* name */
1406 FALSE
, /* partial_inplace */
1408 0xfffc, /* dst_mask */
1409 FALSE
), /* pcrel_offset */
1411 /* Computes a tp-relative displacement, the difference between the value of
1412 sym+add and the value of the thread pointer (r13). */
1413 HOWTO (R_PPC64_TPREL64
,
1415 4, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE
, /* pc_relative */
1419 complain_overflow_dont
, /* complain_on_overflow */
1420 ppc64_elf_unhandled_reloc
, /* special_function */
1421 "R_PPC64_TPREL64", /* name */
1422 FALSE
, /* partial_inplace */
1424 ONES (64), /* dst_mask */
1425 FALSE
), /* pcrel_offset */
1427 /* A 16 bit tprel reloc. */
1428 HOWTO (R_PPC64_TPREL16
,
1430 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_signed
, /* complain_on_overflow */
1435 ppc64_elf_unhandled_reloc
, /* special_function */
1436 "R_PPC64_TPREL16", /* name */
1437 FALSE
, /* partial_inplace */
1439 0xffff, /* dst_mask */
1440 FALSE
), /* pcrel_offset */
1442 /* Like TPREL16, but no overflow. */
1443 HOWTO (R_PPC64_TPREL16_LO
,
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 ppc64_elf_unhandled_reloc
, /* special_function */
1451 "R_PPC64_TPREL16_LO", /* name */
1452 FALSE
, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE
), /* pcrel_offset */
1457 /* Like TPREL16_LO, but next higher group of 16 bits. */
1458 HOWTO (R_PPC64_TPREL16_HI
,
1459 16, /* rightshift */
1460 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 FALSE
, /* pc_relative */
1464 complain_overflow_dont
, /* complain_on_overflow */
1465 ppc64_elf_unhandled_reloc
, /* special_function */
1466 "R_PPC64_TPREL16_HI", /* name */
1467 FALSE
, /* partial_inplace */
1469 0xffff, /* dst_mask */
1470 FALSE
), /* pcrel_offset */
1472 /* Like TPREL16_HI, but adjust for low 16 bits. */
1473 HOWTO (R_PPC64_TPREL16_HA
,
1474 16, /* rightshift */
1475 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE
, /* pc_relative */
1479 complain_overflow_dont
, /* complain_on_overflow */
1480 ppc64_elf_unhandled_reloc
, /* special_function */
1481 "R_PPC64_TPREL16_HA", /* name */
1482 FALSE
, /* partial_inplace */
1484 0xffff, /* dst_mask */
1485 FALSE
), /* pcrel_offset */
1487 /* Like TPREL16_HI, but next higher group of 16 bits. */
1488 HOWTO (R_PPC64_TPREL16_HIGHER
,
1489 32, /* rightshift */
1490 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 FALSE
, /* pc_relative */
1494 complain_overflow_dont
, /* complain_on_overflow */
1495 ppc64_elf_unhandled_reloc
, /* special_function */
1496 "R_PPC64_TPREL16_HIGHER", /* name */
1497 FALSE
, /* partial_inplace */
1499 0xffff, /* dst_mask */
1500 FALSE
), /* pcrel_offset */
1502 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1503 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1504 32, /* rightshift */
1505 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE
, /* pc_relative */
1509 complain_overflow_dont
, /* complain_on_overflow */
1510 ppc64_elf_unhandled_reloc
, /* special_function */
1511 "R_PPC64_TPREL16_HIGHERA", /* name */
1512 FALSE
, /* partial_inplace */
1514 0xffff, /* dst_mask */
1515 FALSE
), /* pcrel_offset */
1517 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1518 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1519 48, /* rightshift */
1520 1, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE
, /* pc_relative */
1524 complain_overflow_dont
, /* complain_on_overflow */
1525 ppc64_elf_unhandled_reloc
, /* special_function */
1526 "R_PPC64_TPREL16_HIGHEST", /* name */
1527 FALSE
, /* partial_inplace */
1529 0xffff, /* dst_mask */
1530 FALSE
), /* pcrel_offset */
1532 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1533 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1534 48, /* rightshift */
1535 1, /* size (0 = byte, 1 = short, 2 = long) */
1537 FALSE
, /* pc_relative */
1539 complain_overflow_dont
, /* complain_on_overflow */
1540 ppc64_elf_unhandled_reloc
, /* special_function */
1541 "R_PPC64_TPREL16_HIGHESTA", /* name */
1542 FALSE
, /* partial_inplace */
1544 0xffff, /* dst_mask */
1545 FALSE
), /* pcrel_offset */
1547 /* Like TPREL16, but for insns with a DS field. */
1548 HOWTO (R_PPC64_TPREL16_DS
,
1550 1, /* size (0 = byte, 1 = short, 2 = long) */
1552 FALSE
, /* pc_relative */
1554 complain_overflow_signed
, /* complain_on_overflow */
1555 ppc64_elf_unhandled_reloc
, /* special_function */
1556 "R_PPC64_TPREL16_DS", /* name */
1557 FALSE
, /* partial_inplace */
1559 0xfffc, /* dst_mask */
1560 FALSE
), /* pcrel_offset */
1562 /* Like TPREL16_DS, but no overflow. */
1563 HOWTO (R_PPC64_TPREL16_LO_DS
,
1565 1, /* size (0 = byte, 1 = short, 2 = long) */
1567 FALSE
, /* pc_relative */
1569 complain_overflow_dont
, /* complain_on_overflow */
1570 ppc64_elf_unhandled_reloc
, /* special_function */
1571 "R_PPC64_TPREL16_LO_DS", /* name */
1572 FALSE
, /* partial_inplace */
1574 0xfffc, /* dst_mask */
1575 FALSE
), /* pcrel_offset */
1577 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1578 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1579 to the first entry relative to the TOC base (r2). */
1580 HOWTO (R_PPC64_GOT_TLSGD16
,
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE
, /* pc_relative */
1586 complain_overflow_signed
, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc
, /* special_function */
1588 "R_PPC64_GOT_TLSGD16", /* name */
1589 FALSE
, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE
), /* pcrel_offset */
1594 /* Like GOT_TLSGD16, but no overflow. */
1595 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_dont
, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc
, /* special_function */
1603 "R_PPC64_GOT_TLSGD16_LO", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1609 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1611 16, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE
, /* pc_relative */
1616 complain_overflow_dont
, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc
, /* special_function */
1618 "R_PPC64_GOT_TLSGD16_HI", /* name */
1619 FALSE
, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1626 16, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc
, /* special_function */
1633 "R_PPC64_GOT_TLSGD16_HA", /* name */
1634 FALSE
, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1640 with values (sym+add)@dtpmod and zero, and computes the offset to the
1641 first entry relative to the TOC base (r2). */
1642 HOWTO (R_PPC64_GOT_TLSLD16
,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE
, /* pc_relative */
1648 complain_overflow_signed
, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc
, /* special_function */
1650 "R_PPC64_GOT_TLSLD16", /* name */
1651 FALSE
, /* partial_inplace */
1653 0xffff, /* dst_mask */
1654 FALSE
), /* pcrel_offset */
1656 /* Like GOT_TLSLD16, but no overflow. */
1657 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1661 FALSE
, /* pc_relative */
1663 complain_overflow_dont
, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc
, /* special_function */
1665 "R_PPC64_GOT_TLSLD16_LO", /* name */
1666 FALSE
, /* partial_inplace */
1668 0xffff, /* dst_mask */
1669 FALSE
), /* pcrel_offset */
1671 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1672 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1673 16, /* rightshift */
1674 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 FALSE
, /* pc_relative */
1678 complain_overflow_dont
, /* complain_on_overflow */
1679 ppc64_elf_unhandled_reloc
, /* special_function */
1680 "R_PPC64_GOT_TLSLD16_HI", /* name */
1681 FALSE
, /* partial_inplace */
1683 0xffff, /* dst_mask */
1684 FALSE
), /* pcrel_offset */
1686 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1687 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1688 16, /* rightshift */
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE
, /* pc_relative */
1693 complain_overflow_dont
, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc
, /* special_function */
1695 "R_PPC64_GOT_TLSLD16_HA", /* name */
1696 FALSE
, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE
), /* pcrel_offset */
1701 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1702 the offset to the entry relative to the TOC base (r2). */
1703 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 FALSE
, /* pc_relative */
1709 complain_overflow_signed
, /* complain_on_overflow */
1710 ppc64_elf_unhandled_reloc
, /* special_function */
1711 "R_PPC64_GOT_DTPREL16_DS", /* name */
1712 FALSE
, /* partial_inplace */
1714 0xfffc, /* dst_mask */
1715 FALSE
), /* pcrel_offset */
1717 /* Like GOT_DTPREL16_DS, but no overflow. */
1718 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1720 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 FALSE
, /* pc_relative */
1724 complain_overflow_dont
, /* complain_on_overflow */
1725 ppc64_elf_unhandled_reloc
, /* special_function */
1726 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1727 FALSE
, /* partial_inplace */
1729 0xfffc, /* dst_mask */
1730 FALSE
), /* pcrel_offset */
1732 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1733 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1734 16, /* rightshift */
1735 1, /* size (0 = byte, 1 = short, 2 = long) */
1737 FALSE
, /* pc_relative */
1739 complain_overflow_dont
, /* complain_on_overflow */
1740 ppc64_elf_unhandled_reloc
, /* special_function */
1741 "R_PPC64_GOT_DTPREL16_HI", /* name */
1742 FALSE
, /* partial_inplace */
1744 0xffff, /* dst_mask */
1745 FALSE
), /* pcrel_offset */
1747 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1748 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1749 16, /* rightshift */
1750 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 FALSE
, /* pc_relative */
1754 complain_overflow_dont
, /* complain_on_overflow */
1755 ppc64_elf_unhandled_reloc
, /* special_function */
1756 "R_PPC64_GOT_DTPREL16_HA", /* name */
1757 FALSE
, /* partial_inplace */
1759 0xffff, /* dst_mask */
1760 FALSE
), /* pcrel_offset */
1762 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1763 offset to the entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_signed
, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc
, /* special_function */
1772 "R_PPC64_GOT_TPREL16_DS", /* name */
1773 FALSE
, /* partial_inplace */
1775 0xfffc, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 /* Like GOT_TPREL16_DS, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_dont
, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xfffc, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1793 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE
, /* pc_relative */
1800 complain_overflow_dont
, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc
, /* special_function */
1802 "R_PPC64_GOT_TPREL16_HI", /* name */
1803 FALSE
, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE
), /* pcrel_offset */
1808 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE
, /* pc_relative */
1815 complain_overflow_dont
, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc
, /* special_function */
1817 "R_PPC64_GOT_TPREL16_HA", /* name */
1818 FALSE
, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE
), /* pcrel_offset */
1823 /* GNU extension to record C++ vtable hierarchy. */
1824 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1826 0, /* size (0 = byte, 1 = short, 2 = long) */
1828 FALSE
, /* pc_relative */
1830 complain_overflow_dont
, /* complain_on_overflow */
1831 NULL
, /* special_function */
1832 "R_PPC64_GNU_VTINHERIT", /* name */
1833 FALSE
, /* partial_inplace */
1836 FALSE
), /* pcrel_offset */
1838 /* GNU extension to record C++ vtable member usage. */
1839 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1841 0, /* size (0 = byte, 1 = short, 2 = long) */
1843 FALSE
, /* pc_relative */
1845 complain_overflow_dont
, /* complain_on_overflow */
1846 NULL
, /* special_function */
1847 "R_PPC64_GNU_VTENTRY", /* name */
1848 FALSE
, /* partial_inplace */
1851 FALSE
), /* pcrel_offset */
1855 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1859 ppc_howto_init (void)
1861 unsigned int i
, type
;
1864 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1867 type
= ppc64_elf_howto_raw
[i
].type
;
1868 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1869 / sizeof (ppc64_elf_howto_table
[0])));
1870 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1874 static reloc_howto_type
*
1875 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1876 bfd_reloc_code_real_type code
)
1878 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1880 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1881 /* Initialize howto table if needed. */
1889 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1891 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1893 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1895 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1897 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1899 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1901 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1903 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1905 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1907 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1909 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1911 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1913 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1915 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1917 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1919 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1921 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1923 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1925 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1927 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1929 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1931 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1933 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1935 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1937 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1939 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1941 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1943 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1945 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1947 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1949 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1951 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1953 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1955 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1957 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1959 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1961 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1963 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1965 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1967 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1969 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1971 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1973 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1975 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1977 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1979 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1981 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1983 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1985 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
1987 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
1989 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
1991 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
1993 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
1995 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
1997 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
1999 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2001 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2003 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2005 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2007 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2009 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2011 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2013 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2015 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2017 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2019 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2021 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2023 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2025 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2027 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2029 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2031 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2035 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2037 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2039 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2043 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2045 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2047 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2049 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2051 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2053 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2055 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2059 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2061 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2063 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2065 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2071 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2073 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2075 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2077 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2083 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2085 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2087 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2089 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2093 return ppc64_elf_howto_table
[r
];
2096 /* Set the howto pointer for a PowerPC ELF reloc. */
2099 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2100 Elf_Internal_Rela
*dst
)
2104 /* Initialize howto table if needed. */
2105 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2108 type
= ELF64_R_TYPE (dst
->r_info
);
2109 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2110 / sizeof (ppc64_elf_howto_table
[0])));
2111 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2114 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2116 static bfd_reloc_status_type
2117 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2118 void *data
, asection
*input_section
,
2119 bfd
*output_bfd
, char **error_message
)
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2124 if (output_bfd
!= NULL
)
2125 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2126 input_section
, output_bfd
, error_message
);
2128 /* Adjust the addend for sign extension of the low 16 bits.
2129 We won't actually be using the low 16 bits, so trashing them
2131 reloc_entry
->addend
+= 0x8000;
2132 return bfd_reloc_continue
;
2135 static bfd_reloc_status_type
2136 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2137 void *data
, asection
*input_section
,
2138 bfd
*output_bfd
, char **error_message
)
2141 enum elf_ppc64_reloc_type r_type
;
2142 bfd_size_type octets
;
2143 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2144 bfd_boolean is_power4
= FALSE
;
2146 /* If this is a relocatable link (output_bfd test tells us), just
2147 call the generic function. Any adjustment will be done at final
2149 if (output_bfd
!= NULL
)
2150 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2151 input_section
, output_bfd
, error_message
);
2153 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2154 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2155 insn
&= ~(0x01 << 21);
2156 r_type
= reloc_entry
->howto
->type
;
2157 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2158 || r_type
== R_PPC64_REL14_BRTAKEN
)
2159 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2163 /* Set 'a' bit. This is 0b00010 in BO field for branch
2164 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2165 for branch on CTR insns (BO == 1a00t or 1a01t). */
2166 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2168 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2171 return bfd_reloc_continue
;
2178 if (!bfd_is_com_section (symbol
->section
))
2179 target
= symbol
->value
;
2180 target
+= symbol
->section
->output_section
->vma
;
2181 target
+= symbol
->section
->output_offset
;
2182 target
+= reloc_entry
->addend
;
2184 from
= (reloc_entry
->address
2185 + input_section
->output_offset
2186 + input_section
->output_section
->vma
);
2188 /* Invert 'y' bit if not the default. */
2189 if ((bfd_signed_vma
) (target
- from
) < 0)
2192 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2193 return bfd_reloc_continue
;
2196 static bfd_reloc_status_type
2197 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2198 void *data
, asection
*input_section
,
2199 bfd
*output_bfd
, char **error_message
)
2201 /* If this is a relocatable link (output_bfd test tells us), just
2202 call the generic function. Any adjustment will be done at final
2204 if (output_bfd
!= NULL
)
2205 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2206 input_section
, output_bfd
, error_message
);
2208 /* Subtract the symbol section base address. */
2209 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2210 return bfd_reloc_continue
;
2213 static bfd_reloc_status_type
2214 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2215 void *data
, asection
*input_section
,
2216 bfd
*output_bfd
, char **error_message
)
2218 /* If this is a relocatable link (output_bfd test tells us), just
2219 call the generic function. Any adjustment will be done at final
2221 if (output_bfd
!= NULL
)
2222 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2223 input_section
, output_bfd
, error_message
);
2225 /* Subtract the symbol section base address. */
2226 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2228 /* Adjust the addend for sign extension of the low 16 bits. */
2229 reloc_entry
->addend
+= 0x8000;
2230 return bfd_reloc_continue
;
2233 static bfd_reloc_status_type
2234 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2235 void *data
, asection
*input_section
,
2236 bfd
*output_bfd
, char **error_message
)
2240 /* If this is a relocatable link (output_bfd test tells us), just
2241 call the generic function. Any adjustment will be done at final
2243 if (output_bfd
!= NULL
)
2244 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2245 input_section
, output_bfd
, error_message
);
2247 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2249 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2251 /* Subtract the TOC base address. */
2252 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2253 return bfd_reloc_continue
;
2256 static bfd_reloc_status_type
2257 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2258 void *data
, asection
*input_section
,
2259 bfd
*output_bfd
, char **error_message
)
2263 /* If this is a relocatable link (output_bfd test tells us), just
2264 call the generic function. Any adjustment will be done at final
2266 if (output_bfd
!= NULL
)
2267 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2268 input_section
, output_bfd
, error_message
);
2270 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2272 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2274 /* Subtract the TOC base address. */
2275 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2277 /* Adjust the addend for sign extension of the low 16 bits. */
2278 reloc_entry
->addend
+= 0x8000;
2279 return bfd_reloc_continue
;
2282 static bfd_reloc_status_type
2283 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2284 void *data
, asection
*input_section
,
2285 bfd
*output_bfd
, char **error_message
)
2288 bfd_size_type octets
;
2290 /* If this is a relocatable link (output_bfd test tells us), just
2291 call the generic function. Any adjustment will be done at final
2293 if (output_bfd
!= NULL
)
2294 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2295 input_section
, output_bfd
, error_message
);
2297 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2299 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2301 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2302 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2303 return bfd_reloc_ok
;
2306 static bfd_reloc_status_type
2307 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2308 void *data
, asection
*input_section
,
2309 bfd
*output_bfd
, char **error_message
)
2311 /* If this is a relocatable link (output_bfd test tells us), just
2312 call the generic function. Any adjustment will be done at final
2314 if (output_bfd
!= NULL
)
2315 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2316 input_section
, output_bfd
, error_message
);
2318 if (error_message
!= NULL
)
2320 static char buf
[60];
2321 sprintf (buf
, "generic linker can't handle %s",
2322 reloc_entry
->howto
->name
);
2323 *error_message
= buf
;
2325 return bfd_reloc_dangerous
;
2328 struct ppc64_elf_obj_tdata
2330 struct elf_obj_tdata elf
;
2332 /* Shortcuts to dynamic linker sections. */
2336 /* Used during garbage collection. We attach global symbols defined
2337 on removed .opd entries to this section so that the sym is removed. */
2338 asection
*deleted_section
;
2340 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2341 sections means we potentially need one of these for each input bfd. */
2343 bfd_signed_vma refcount
;
2348 #define ppc64_elf_tdata(bfd) \
2349 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2351 #define ppc64_tlsld_got(bfd) \
2352 (&ppc64_elf_tdata (bfd)->tlsld_got)
2354 /* Override the generic function because we store some extras. */
2357 ppc64_elf_mkobject (bfd
*abfd
)
2359 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2360 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2361 if (abfd
->tdata
.any
== NULL
)
2366 /* Fix bad default arch selected for a 64 bit input bfd when the
2367 default is 32 bit. */
2370 ppc64_elf_object_p (bfd
*abfd
)
2372 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2374 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2376 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2378 /* Relies on arch after 32 bit default being 64 bit default. */
2379 abfd
->arch_info
= abfd
->arch_info
->next
;
2380 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2386 /* Support for core dump NOTE sections. */
2389 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2391 size_t offset
, size
;
2393 if (note
->descsz
!= 504)
2397 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2400 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2406 /* Make a ".reg/999" section. */
2407 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2408 size
, note
->descpos
+ offset
);
2412 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2414 if (note
->descsz
!= 136)
2417 elf_tdata (abfd
)->core_program
2418 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2419 elf_tdata (abfd
)->core_command
2420 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2425 /* Merge backend specific data from an object file to the output
2426 object file when linking. */
2429 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2431 /* Check if we have the same endianess. */
2432 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2433 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2434 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2438 if (bfd_big_endian (ibfd
))
2439 msg
= _("%B: compiled for a big endian system "
2440 "and target is little endian");
2442 msg
= _("%B: compiled for a little endian system "
2443 "and target is big endian");
2445 (*_bfd_error_handler
) (msg
, ibfd
);
2447 bfd_set_error (bfd_error_wrong_format
);
2454 /* Add extra PPC sections. */
2456 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2458 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2459 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2460 { ".plt", 4, 0, SHT_NOBITS
, 0 },
2461 { ".toc", 4, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2462 { ".toc1", 5, 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2463 { ".tocbss", 7, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2464 { NULL
, 0, 0, 0, 0 }
2467 struct _ppc64_elf_section_data
2469 struct bfd_elf_section_data elf
;
2471 /* An array with one entry for each opd function descriptor. */
2474 /* Points to the function code section for local opd entries. */
2475 asection
**func_sec
;
2476 /* After editing .opd, adjust references to opd local syms. */
2480 /* An array for toc sections, indexed by offset/8.
2481 Specifies the relocation symbol index used at a given toc offset. */
2485 #define ppc64_elf_section_data(sec) \
2486 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2489 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2491 struct _ppc64_elf_section_data
*sdata
;
2492 bfd_size_type amt
= sizeof (*sdata
);
2494 sdata
= bfd_zalloc (abfd
, amt
);
2497 sec
->used_by_bfd
= sdata
;
2499 return _bfd_elf_new_section_hook (abfd
, sec
);
2503 get_opd_info (asection
* sec
)
2506 && ppc64_elf_section_data (sec
) != NULL
2507 && ppc64_elf_section_data (sec
)->opd
.adjust
!= NULL
)
2508 return ppc64_elf_section_data (sec
)->opd
.adjust
;
2512 /* The following functions are specific to the ELF linker, while
2513 functions above are used generally. Those named ppc64_elf_* are
2514 called by the main ELF linker code. They appear in this file more
2515 or less in the order in which they are called. eg.
2516 ppc64_elf_check_relocs is called early in the link process,
2517 ppc64_elf_finish_dynamic_sections is one of the last functions
2520 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2521 functions have both a function code symbol and a function descriptor
2522 symbol. A call to foo in a relocatable object file looks like:
2529 The function definition in another object file might be:
2533 . .quad .TOC.@tocbase
2539 When the linker resolves the call during a static link, the branch
2540 unsurprisingly just goes to .foo and the .opd information is unused.
2541 If the function definition is in a shared library, things are a little
2542 different: The call goes via a plt call stub, the opd information gets
2543 copied to the plt, and the linker patches the nop.
2551 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2552 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2553 . std 2,40(1) # this is the general idea
2561 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2563 The "reloc ()" notation is supposed to indicate that the linker emits
2564 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2567 What are the difficulties here? Well, firstly, the relocations
2568 examined by the linker in check_relocs are against the function code
2569 sym .foo, while the dynamic relocation in the plt is emitted against
2570 the function descriptor symbol, foo. Somewhere along the line, we need
2571 to carefully copy dynamic link information from one symbol to the other.
2572 Secondly, the generic part of the elf linker will make .foo a dynamic
2573 symbol as is normal for most other backends. We need foo dynamic
2574 instead, at least for an application final link. However, when
2575 creating a shared library containing foo, we need to have both symbols
2576 dynamic so that references to .foo are satisfied during the early
2577 stages of linking. Otherwise the linker might decide to pull in a
2578 definition from some other object, eg. a static library.
2580 Update: As of August 2004, we support a new convention. Function
2581 calls may use the function descriptor symbol, ie. "bl foo". This
2582 behaves exactly as "bl .foo". */
2584 /* The linker needs to keep track of the number of relocs that it
2585 decides to copy as dynamic relocs in check_relocs for each symbol.
2586 This is so that it can later discard them if they are found to be
2587 unnecessary. We store the information in a field extending the
2588 regular ELF linker hash table. */
2590 struct ppc_dyn_relocs
2592 struct ppc_dyn_relocs
*next
;
2594 /* The input section of the reloc. */
2597 /* Total number of relocs copied for the input section. */
2598 bfd_size_type count
;
2600 /* Number of pc-relative relocs copied for the input section. */
2601 bfd_size_type pc_count
;
2604 /* Track GOT entries needed for a given symbol. We might need more
2605 than one got entry per symbol. */
2608 struct got_entry
*next
;
2610 /* The symbol addend that we'll be placing in the GOT. */
2613 /* Unlike other ELF targets, we use separate GOT entries for the same
2614 symbol referenced from different input files. This is to support
2615 automatic multiple TOC/GOT sections, where the TOC base can vary
2616 from one input file to another.
2618 Point to the BFD owning this GOT entry. */
2621 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2622 TLS_TPREL or TLS_DTPREL for tls entries. */
2625 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2628 bfd_signed_vma refcount
;
2633 /* The same for PLT. */
2636 struct plt_entry
*next
;
2642 bfd_signed_vma refcount
;
2647 /* Of those relocs that might be copied as dynamic relocs, this macro
2648 selects those that must be copied when linking a shared library,
2649 even when the symbol is local. */
2651 #define MUST_BE_DYN_RELOC(RTYPE) \
2652 ((RTYPE) != R_PPC64_REL32 \
2653 && (RTYPE) != R_PPC64_REL64 \
2654 && (RTYPE) != R_PPC64_REL30)
2656 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2657 copying dynamic variables from a shared lib into an app's dynbss
2658 section, and instead use a dynamic relocation to point into the
2659 shared lib. With code that gcc generates, it's vital that this be
2660 enabled; In the PowerPC64 ABI, the address of a function is actually
2661 the address of a function descriptor, which resides in the .opd
2662 section. gcc uses the descriptor directly rather than going via the
2663 GOT as some other ABI's do, which means that initialized function
2664 pointers must reference the descriptor. Thus, a function pointer
2665 initialized to the address of a function in a shared library will
2666 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2667 redefines the function descriptor symbol to point to the copy. This
2668 presents a problem as a plt entry for that function is also
2669 initialized from the function descriptor symbol and the copy reloc
2670 may not be initialized first. */
2671 #define ELIMINATE_COPY_RELOCS 1
2673 /* Section name for stubs is the associated section name plus this
2675 #define STUB_SUFFIX ".stub"
2678 ppc_stub_long_branch:
2679 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2680 destination, but a 24 bit branch in a stub section will reach.
2683 ppc_stub_plt_branch:
2684 Similar to the above, but a 24 bit branch in the stub section won't
2685 reach its destination.
2686 . addis %r12,%r2,xxx@toc@ha
2687 . ld %r11,xxx@toc@l(%r12)
2692 Used to call a function in a shared library. If it so happens that
2693 the plt entry referenced crosses a 64k boundary, then an extra
2694 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
2695 xxx+16 as appropriate.
2696 . addis %r12,%r2,xxx@toc@ha
2698 . ld %r11,xxx+0@toc@l(%r12)
2699 . ld %r2,xxx+8@toc@l(%r12)
2701 . ld %r11,xxx+16@toc@l(%r12)
2704 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2705 code to adjust the value and save r2 to support multiple toc sections.
2706 A ppc_stub_long_branch with an r2 offset looks like:
2708 . addis %r2,%r2,off@ha
2709 . addi %r2,%r2,off@l
2712 A ppc_stub_plt_branch with an r2 offset looks like:
2714 . addis %r12,%r2,xxx@toc@ha
2715 . ld %r11,xxx@toc@l(%r12)
2716 . addis %r2,%r2,off@ha
2717 . addi %r2,%r2,off@l
2722 enum ppc_stub_type
{
2724 ppc_stub_long_branch
,
2725 ppc_stub_long_branch_r2off
,
2726 ppc_stub_plt_branch
,
2727 ppc_stub_plt_branch_r2off
,
2731 struct ppc_stub_hash_entry
{
2733 /* Base hash table entry structure. */
2734 struct bfd_hash_entry root
;
2736 enum ppc_stub_type stub_type
;
2738 /* The stub section. */
2741 /* Offset within stub_sec of the beginning of this stub. */
2742 bfd_vma stub_offset
;
2744 /* Given the symbol's value and its section we can determine its final
2745 value when building the stubs (so the stub knows where to jump. */
2746 bfd_vma target_value
;
2747 asection
*target_section
;
2749 /* The symbol table entry, if any, that this was derived from. */
2750 struct ppc_link_hash_entry
*h
;
2752 /* And the reloc addend that this was derived from. */
2755 /* Where this stub is being called from, or, in the case of combined
2756 stub sections, the first input section in the group. */
2760 struct ppc_branch_hash_entry
{
2762 /* Base hash table entry structure. */
2763 struct bfd_hash_entry root
;
2765 /* Offset within .branch_lt. */
2766 unsigned int offset
;
2768 /* Generation marker. */
2772 struct ppc_link_hash_entry
2774 struct elf_link_hash_entry elf
;
2776 /* A pointer to the most recently used stub hash entry against this
2778 struct ppc_stub_hash_entry
*stub_cache
;
2780 /* Track dynamic relocs copied for this symbol. */
2781 struct ppc_dyn_relocs
*dyn_relocs
;
2783 /* Link between function code and descriptor symbols. */
2784 struct ppc_link_hash_entry
*oh
;
2786 /* Flag function code and descriptor symbols. */
2787 unsigned int is_func
:1;
2788 unsigned int is_func_descriptor
:1;
2790 /* Whether global opd sym has been adjusted or not.
2791 After ppc64_elf_edit_opd has run, this flag should be set for all
2792 globals defined in any opd section. */
2793 unsigned int adjust_done
:1;
2795 /* Set if we twiddled this symbol to weak at some stage. */
2796 unsigned int was_undefined
:1;
2798 /* Contexts in which symbol is used in the GOT (or TOC).
2799 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2800 corresponding relocs are encountered during check_relocs.
2801 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2802 indicate the corresponding GOT entry type is not needed.
2803 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2804 a TPREL one. We use a separate flag rather than setting TPREL
2805 just for convenience in distinguishing the two cases. */
2806 #define TLS_GD 1 /* GD reloc. */
2807 #define TLS_LD 2 /* LD reloc. */
2808 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2809 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2810 #define TLS_TLS 16 /* Any TLS reloc. */
2811 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2812 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2816 /* ppc64 ELF linker hash table. */
2818 struct ppc_link_hash_table
2820 struct elf_link_hash_table elf
;
2822 /* The stub hash table. */
2823 struct bfd_hash_table stub_hash_table
;
2825 /* Another hash table for plt_branch stubs. */
2826 struct bfd_hash_table branch_hash_table
;
2828 /* Linker stub bfd. */
2831 /* Linker call-backs. */
2832 asection
* (*add_stub_section
) (const char *, asection
*);
2833 void (*layout_sections_again
) (void);
2835 /* Array to keep track of which stub sections have been created, and
2836 information on stub grouping. */
2838 /* This is the section to which stubs in the group will be attached. */
2840 /* The stub section. */
2842 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2846 /* Temp used when calculating TOC pointers. */
2849 /* Highest input section id. */
2852 /* Highest output section index. */
2855 /* List of input sections for each output section. */
2856 asection
**input_list
;
2858 /* Short-cuts to get to dynamic linker sections. */
2869 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
2870 struct ppc_link_hash_entry
*tls_get_addr
;
2871 struct ppc_link_hash_entry
*tls_get_addr_fd
;
2874 unsigned long stub_count
[ppc_stub_plt_call
];
2876 /* Set if we should emit symbols for stubs. */
2877 unsigned int emit_stub_syms
:1;
2880 unsigned int stub_error
:1;
2882 /* Flag set when small branches are detected. Used to
2883 select suitable defaults for the stub group size. */
2884 unsigned int has_14bit_branch
:1;
2886 /* Temp used by ppc64_elf_check_directives. */
2887 unsigned int twiddled_syms
:1;
2889 /* Incremented every time we size stubs. */
2890 unsigned int stub_iteration
;
2892 /* Small local sym to section mapping cache. */
2893 struct sym_sec_cache sym_sec
;
2896 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2898 #define ppc_hash_table(p) \
2899 ((struct ppc_link_hash_table *) ((p)->hash))
2901 #define ppc_stub_hash_lookup(table, string, create, copy) \
2902 ((struct ppc_stub_hash_entry *) \
2903 bfd_hash_lookup ((table), (string), (create), (copy)))
2905 #define ppc_branch_hash_lookup(table, string, create, copy) \
2906 ((struct ppc_branch_hash_entry *) \
2907 bfd_hash_lookup ((table), (string), (create), (copy)))
2909 /* Create an entry in the stub hash table. */
2911 static struct bfd_hash_entry
*
2912 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2913 struct bfd_hash_table
*table
,
2916 /* Allocate the structure if it has not already been allocated by a
2920 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
2925 /* Call the allocation method of the superclass. */
2926 entry
= bfd_hash_newfunc (entry
, table
, string
);
2929 struct ppc_stub_hash_entry
*eh
;
2931 /* Initialize the local fields. */
2932 eh
= (struct ppc_stub_hash_entry
*) entry
;
2933 eh
->stub_type
= ppc_stub_none
;
2934 eh
->stub_sec
= NULL
;
2935 eh
->stub_offset
= 0;
2936 eh
->target_value
= 0;
2937 eh
->target_section
= NULL
;
2945 /* Create an entry in the branch hash table. */
2947 static struct bfd_hash_entry
*
2948 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
2949 struct bfd_hash_table
*table
,
2952 /* Allocate the structure if it has not already been allocated by a
2956 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
2961 /* Call the allocation method of the superclass. */
2962 entry
= bfd_hash_newfunc (entry
, table
, string
);
2965 struct ppc_branch_hash_entry
*eh
;
2967 /* Initialize the local fields. */
2968 eh
= (struct ppc_branch_hash_entry
*) entry
;
2976 /* Create an entry in a ppc64 ELF linker hash table. */
2978 static struct bfd_hash_entry
*
2979 link_hash_newfunc (struct bfd_hash_entry
*entry
,
2980 struct bfd_hash_table
*table
,
2983 /* Allocate the structure if it has not already been allocated by a
2987 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
2992 /* Call the allocation method of the superclass. */
2993 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2996 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
2998 eh
->stub_cache
= NULL
;
2999 eh
->dyn_relocs
= NULL
;
3002 eh
->is_func_descriptor
= 0;
3003 eh
->adjust_done
= 0;
3004 eh
->was_undefined
= 0;
3011 /* Create a ppc64 ELF linker hash table. */
3013 static struct bfd_link_hash_table
*
3014 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3016 struct ppc_link_hash_table
*htab
;
3017 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3019 htab
= bfd_zmalloc (amt
);
3023 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
3029 /* Init the stub hash table too. */
3030 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
3033 /* And the branch hash table. */
3034 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
3037 /* Initializing two fields of the union is just cosmetic. We really
3038 only care about glist, but when compiled on a 32-bit host the
3039 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3040 debugger inspection of these fields look nicer. */
3041 htab
->elf
.init_refcount
.refcount
= 0;
3042 htab
->elf
.init_refcount
.glist
= NULL
;
3043 htab
->elf
.init_offset
.offset
= 0;
3044 htab
->elf
.init_offset
.glist
= NULL
;
3046 return &htab
->elf
.root
;
3049 /* Free the derived linker hash table. */
3052 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3054 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3056 bfd_hash_table_free (&ret
->stub_hash_table
);
3057 bfd_hash_table_free (&ret
->branch_hash_table
);
3058 _bfd_generic_link_hash_table_free (hash
);
3061 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3064 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3066 struct ppc_link_hash_table
*htab
;
3068 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3070 /* Always hook our dynamic sections into the first bfd, which is the
3071 linker created stub bfd. This ensures that the GOT header is at
3072 the start of the output TOC section. */
3073 htab
= ppc_hash_table (info
);
3074 htab
->stub_bfd
= abfd
;
3075 htab
->elf
.dynobj
= abfd
;
3078 /* Build a name for an entry in the stub hash table. */
3081 ppc_stub_name (const asection
*input_section
,
3082 const asection
*sym_sec
,
3083 const struct ppc_link_hash_entry
*h
,
3084 const Elf_Internal_Rela
*rel
)
3089 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3090 offsets from a sym as a branch target? In fact, we could
3091 probably assume the addend is always zero. */
3092 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3096 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3097 stub_name
= bfd_malloc (len
);
3098 if (stub_name
!= NULL
)
3100 sprintf (stub_name
, "%08x.%s+%x",
3101 input_section
->id
& 0xffffffff,
3102 h
->elf
.root
.root
.string
,
3103 (int) rel
->r_addend
& 0xffffffff);
3108 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3109 stub_name
= bfd_malloc (len
);
3110 if (stub_name
!= NULL
)
3112 sprintf (stub_name
, "%08x.%x:%x+%x",
3113 input_section
->id
& 0xffffffff,
3114 sym_sec
->id
& 0xffffffff,
3115 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3116 (int) rel
->r_addend
& 0xffffffff);
3122 /* Look up an entry in the stub hash. Stub entries are cached because
3123 creating the stub name takes a bit of time. */
3125 static struct ppc_stub_hash_entry
*
3126 ppc_get_stub_entry (const asection
*input_section
,
3127 const asection
*sym_sec
,
3128 struct elf_link_hash_entry
*hash
,
3129 const Elf_Internal_Rela
*rel
,
3130 struct ppc_link_hash_table
*htab
)
3132 struct ppc_stub_hash_entry
*stub_entry
;
3133 struct ppc_link_hash_entry
*h
= (struct ppc_link_hash_entry
*) hash
;
3134 const asection
*id_sec
;
3136 /* If this input section is part of a group of sections sharing one
3137 stub section, then use the id of the first section in the group.
3138 Stub names need to include a section id, as there may well be
3139 more than one stub used to reach say, printf, and we need to
3140 distinguish between them. */
3141 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3143 if (h
!= NULL
&& h
->stub_cache
!= NULL
3144 && h
->stub_cache
->h
== h
3145 && h
->stub_cache
->id_sec
== id_sec
)
3147 stub_entry
= h
->stub_cache
;
3153 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3154 if (stub_name
== NULL
)
3157 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3158 stub_name
, FALSE
, FALSE
);
3160 h
->stub_cache
= stub_entry
;
3168 /* Add a new stub entry to the stub hash. Not all fields of the new
3169 stub entry are initialised. */
3171 static struct ppc_stub_hash_entry
*
3172 ppc_add_stub (const char *stub_name
,
3174 struct ppc_link_hash_table
*htab
)
3178 struct ppc_stub_hash_entry
*stub_entry
;
3180 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3181 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3182 if (stub_sec
== NULL
)
3184 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3185 if (stub_sec
== NULL
)
3191 namelen
= strlen (link_sec
->name
);
3192 len
= namelen
+ sizeof (STUB_SUFFIX
);
3193 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3197 memcpy (s_name
, link_sec
->name
, namelen
);
3198 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3199 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3200 if (stub_sec
== NULL
)
3202 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3204 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3207 /* Enter this entry into the linker stub hash table. */
3208 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3210 if (stub_entry
== NULL
)
3212 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3213 section
->owner
, stub_name
);
3217 stub_entry
->stub_sec
= stub_sec
;
3218 stub_entry
->stub_offset
= 0;
3219 stub_entry
->id_sec
= link_sec
;
3223 /* Create sections for linker generated code. */
3226 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3228 struct ppc_link_hash_table
*htab
;
3231 htab
= ppc_hash_table (info
);
3233 /* Create .sfpr for code to save and restore fp regs. */
3234 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3235 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3236 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3237 if (htab
->sfpr
== NULL
3238 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3239 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3242 /* Create .glink for lazy dynamic linking support. */
3243 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3244 if (htab
->glink
== NULL
3245 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3246 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3249 /* Create .branch_lt for plt_branch stubs. */
3250 flags
= (SEC_ALLOC
| SEC_LOAD
3251 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3252 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3253 if (htab
->brlt
== NULL
3254 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3255 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3260 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3261 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3262 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3264 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3265 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3271 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3272 not already done. */
3275 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3277 asection
*got
, *relgot
;
3279 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3283 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3286 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3291 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3292 | SEC_LINKER_CREATED
);
3294 got
= bfd_make_section (abfd
, ".got");
3296 || !bfd_set_section_flags (abfd
, got
, flags
)
3297 || !bfd_set_section_alignment (abfd
, got
, 3))
3300 relgot
= bfd_make_section (abfd
, ".rela.got");
3302 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3303 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3306 ppc64_elf_tdata (abfd
)->got
= got
;
3307 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3311 /* Create the dynamic sections, and set up shortcuts. */
3314 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3316 struct ppc_link_hash_table
*htab
;
3318 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3321 htab
= ppc_hash_table (info
);
3323 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3324 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3325 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3326 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3328 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3330 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3331 || (!info
->shared
&& !htab
->relbss
))
3337 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3340 ppc64_elf_copy_indirect_symbol
3341 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3342 struct elf_link_hash_entry
*dir
,
3343 struct elf_link_hash_entry
*ind
)
3345 struct ppc_link_hash_entry
*edir
, *eind
;
3348 edir
= (struct ppc_link_hash_entry
*) dir
;
3349 eind
= (struct ppc_link_hash_entry
*) ind
;
3351 /* Copy over any dynamic relocs we may have on the indirect sym. */
3352 if (eind
->dyn_relocs
!= NULL
)
3354 if (edir
->dyn_relocs
!= NULL
)
3356 struct ppc_dyn_relocs
**pp
;
3357 struct ppc_dyn_relocs
*p
;
3359 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3362 /* Add reloc counts against the weak sym to the strong sym
3363 list. Merge any entries against the same section. */
3364 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3366 struct ppc_dyn_relocs
*q
;
3368 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3369 if (q
->sec
== p
->sec
)
3371 q
->pc_count
+= p
->pc_count
;
3372 q
->count
+= p
->count
;
3379 *pp
= edir
->dyn_relocs
;
3382 edir
->dyn_relocs
= eind
->dyn_relocs
;
3383 eind
->dyn_relocs
= NULL
;
3386 edir
->is_func
|= eind
->is_func
;
3387 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3388 edir
->tls_mask
|= eind
->tls_mask
;
3390 mask
= (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
3391 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
| ELF_LINK_NON_GOT_REF
3392 | ELF_LINK_HASH_NEEDS_PLT
);
3393 /* If called to transfer flags for a weakdef during processing
3394 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3395 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3396 if (ELIMINATE_COPY_RELOCS
3397 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3398 && (edir
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
3399 mask
&= ~ELF_LINK_NON_GOT_REF
;
3401 edir
->elf
.elf_link_hash_flags
|= eind
->elf
.elf_link_hash_flags
& mask
;
3403 /* If we were called to copy over info for a weak sym, that's all. */
3404 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3407 /* Copy over got entries that we may have already seen to the
3408 symbol which just became indirect. */
3409 if (eind
->elf
.got
.glist
!= NULL
)
3411 if (edir
->elf
.got
.glist
!= NULL
)
3413 struct got_entry
**entp
;
3414 struct got_entry
*ent
;
3416 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3418 struct got_entry
*dent
;
3420 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3421 if (dent
->addend
== ent
->addend
3422 && dent
->owner
== ent
->owner
3423 && dent
->tls_type
== ent
->tls_type
)
3425 dent
->got
.refcount
+= ent
->got
.refcount
;
3432 *entp
= edir
->elf
.got
.glist
;
3435 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3436 eind
->elf
.got
.glist
= NULL
;
3439 /* And plt entries. */
3440 if (eind
->elf
.plt
.plist
!= NULL
)
3442 if (edir
->elf
.plt
.plist
!= NULL
)
3444 struct plt_entry
**entp
;
3445 struct plt_entry
*ent
;
3447 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3449 struct plt_entry
*dent
;
3451 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3452 if (dent
->addend
== ent
->addend
)
3454 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3461 *entp
= edir
->elf
.plt
.plist
;
3464 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3465 eind
->elf
.plt
.plist
= NULL
;
3468 if (edir
->elf
.dynindx
== -1)
3470 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3471 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3472 eind
->elf
.dynindx
= -1;
3473 eind
->elf
.dynstr_index
= 0;
3476 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3479 /* Find the function descriptor hash entry from the given function code
3480 hash entry FH. Link the entries via their OH fields. */
3482 static struct ppc_link_hash_entry
*
3483 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3485 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
3489 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3491 fdh
= (struct ppc_link_hash_entry
*)
3492 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3495 fdh
->is_func_descriptor
= 1;
3505 /* Hacks to support old ABI code.
3506 When making function calls, old ABI code references function entry
3507 points (dot symbols), while new ABI code references the function
3508 descriptor symbol. We need to make any combination of reference and
3509 definition work together, without breaking archive linking.
3511 For a defined function "foo" and an undefined call to "bar":
3512 An old object defines "foo" and ".foo", references ".bar" (possibly
3514 A new object defines "foo" and references "bar".
3516 A new object thus has no problem with its undefined symbols being
3517 satisfied by definitions in an old object. On the other hand, the
3518 old object won't have ".bar" satisfied by a new object. */
3520 /* Fix function descriptor symbols defined in .opd sections to be
3524 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
3525 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3526 Elf_Internal_Sym
*isym
,
3527 const char **name ATTRIBUTE_UNUSED
,
3528 flagword
*flags ATTRIBUTE_UNUSED
,
3530 bfd_vma
*value ATTRIBUTE_UNUSED
)
3533 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
3534 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
3538 /* This function makes an old ABI object reference to ".bar" cause the
3539 inclusion of a new ABI object archive that defines "bar". */
3541 static struct elf_link_hash_entry
*
3542 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
3543 struct bfd_link_info
*info
,
3546 struct elf_link_hash_entry
*h
;
3550 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
3557 len
= strlen (name
);
3558 dot_name
= bfd_alloc (abfd
, len
+ 2);
3559 if (dot_name
== NULL
)
3560 return (struct elf_link_hash_entry
*) 0 - 1;
3562 memcpy (dot_name
+ 1, name
, len
+ 1);
3563 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
3564 bfd_release (abfd
, dot_name
);
3568 /* This function satisfies all old ABI object references to ".bar" if a
3569 new ABI object defines "bar". Well, at least, undefined dot symbols
3570 are made weak. This stops later archive searches from including an
3571 object if we already have a function descriptor definition. It also
3572 prevents the linker complaining about undefined symbols.
3573 We also check and correct mismatched symbol visibility here. The
3574 most restrictive visibility of the function descriptor and the
3575 function entry symbol is used. */
3578 add_symbol_adjust (struct elf_link_hash_entry
*h
, void *inf
)
3580 struct bfd_link_info
*info
;
3581 struct ppc_link_hash_table
*htab
;
3582 struct ppc_link_hash_entry
*eh
;
3583 struct ppc_link_hash_entry
*fdh
;
3585 if (h
->root
.type
== bfd_link_hash_indirect
)
3588 if (h
->root
.type
== bfd_link_hash_warning
)
3589 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3591 if (h
->root
.root
.string
[0] != '.')
3595 htab
= ppc_hash_table (info
);
3596 eh
= (struct ppc_link_hash_entry
*) h
;
3597 fdh
= get_fdh (eh
, htab
);
3600 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
3601 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
3602 if (entry_vis
< descr_vis
)
3603 fdh
->elf
.other
+= entry_vis
- descr_vis
;
3604 else if (entry_vis
> descr_vis
)
3605 eh
->elf
.other
+= descr_vis
- entry_vis
;
3607 if (eh
->elf
.root
.type
== bfd_link_hash_undefined
)
3609 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
3610 eh
->was_undefined
= 1;
3611 htab
->twiddled_syms
= 1;
3619 ppc64_elf_check_directives (bfd
*abfd ATTRIBUTE_UNUSED
,
3620 struct bfd_link_info
*info
)
3622 struct ppc_link_hash_table
*htab
;
3623 extern const bfd_target bfd_elf64_powerpc_vec
;
3624 extern const bfd_target bfd_elf64_powerpcle_vec
;
3626 htab
= ppc_hash_table (info
);
3627 if (htab
->elf
.root
.creator
!= &bfd_elf64_powerpc_vec
3628 && htab
->elf
.root
.creator
!= &bfd_elf64_powerpcle_vec
)
3631 elf_link_hash_traverse (&htab
->elf
, add_symbol_adjust
, info
);
3633 /* We need to fix the undefs list for any syms we have twiddled to
3635 if (htab
->twiddled_syms
)
3637 struct bfd_link_hash_entry
**pun
;
3639 pun
= &htab
->elf
.root
.undefs
;
3640 while (*pun
!= NULL
)
3642 struct bfd_link_hash_entry
*h
= *pun
;
3644 if (h
->type
!= bfd_link_hash_undefined
3645 && h
->type
!= bfd_link_hash_common
)
3649 if (h
== htab
->elf
.root
.undefs_tail
)
3651 if (pun
== &htab
->elf
.root
.undefs
)
3652 htab
->elf
.root
.undefs_tail
= NULL
;
3654 /* pun points at an und_next field. Go back to
3655 the start of the link_hash_entry. */
3656 htab
->elf
.root
.undefs_tail
= (struct bfd_link_hash_entry
*)
3657 ((char *) pun
- ((char *) &h
->und_next
- (char *) h
));
3665 htab
->twiddled_syms
= 0;
3671 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
3672 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
3674 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
3675 char *local_got_tls_masks
;
3677 if (local_got_ents
== NULL
)
3679 bfd_size_type size
= symtab_hdr
->sh_info
;
3681 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
3682 local_got_ents
= bfd_zalloc (abfd
, size
);
3683 if (local_got_ents
== NULL
)
3685 elf_local_got_ents (abfd
) = local_got_ents
;
3688 if ((tls_type
& TLS_EXPLICIT
) == 0)
3690 struct got_entry
*ent
;
3692 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
3693 if (ent
->addend
== r_addend
3694 && ent
->owner
== abfd
3695 && ent
->tls_type
== tls_type
)
3699 bfd_size_type amt
= sizeof (*ent
);
3700 ent
= bfd_alloc (abfd
, amt
);
3703 ent
->next
= local_got_ents
[r_symndx
];
3704 ent
->addend
= r_addend
;
3706 ent
->tls_type
= tls_type
;
3707 ent
->got
.refcount
= 0;
3708 local_got_ents
[r_symndx
] = ent
;
3710 ent
->got
.refcount
+= 1;
3713 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
3714 local_got_tls_masks
[r_symndx
] |= tls_type
;
3719 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
3721 struct plt_entry
*ent
;
3723 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3724 if (ent
->addend
== addend
)
3728 bfd_size_type amt
= sizeof (*ent
);
3729 ent
= bfd_alloc (abfd
, amt
);
3732 ent
->next
= eh
->elf
.plt
.plist
;
3733 ent
->addend
= addend
;
3734 ent
->plt
.refcount
= 0;
3735 eh
->elf
.plt
.plist
= ent
;
3737 ent
->plt
.refcount
+= 1;
3738 eh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
3743 /* Look through the relocs for a section during the first phase, and
3744 calculate needed space in the global offset table, procedure
3745 linkage table, and dynamic reloc sections. */
3748 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
3749 asection
*sec
, const Elf_Internal_Rela
*relocs
)
3751 struct ppc_link_hash_table
*htab
;
3752 Elf_Internal_Shdr
*symtab_hdr
;
3753 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3754 const Elf_Internal_Rela
*rel
;
3755 const Elf_Internal_Rela
*rel_end
;
3757 asection
**opd_sym_map
;
3759 if (info
->relocatable
)
3762 /* Don't do anything special with non-loaded, non-alloced sections.
3763 In particular, any relocs in such sections should not affect GOT
3764 and PLT reference counting (ie. we don't allow them to create GOT
3765 or PLT entries), there's no possibility or desire to optimize TLS
3766 relocs, and there's not much point in propagating relocs to shared
3767 libs that the dynamic linker won't relocate. */
3768 if ((sec
->flags
& SEC_ALLOC
) == 0)
3771 htab
= ppc_hash_table (info
);
3772 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3774 sym_hashes
= elf_sym_hashes (abfd
);
3775 sym_hashes_end
= (sym_hashes
3776 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
3777 - symtab_hdr
->sh_info
);
3781 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
3783 /* Garbage collection needs some extra help with .opd sections.
3784 We don't want to necessarily keep everything referenced by
3785 relocs in .opd, as that would keep all functions. Instead,
3786 if we reference an .opd symbol (a function descriptor), we
3787 want to keep the function code symbol's section. This is
3788 easy for global symbols, but for local syms we need to keep
3789 information about the associated function section. Later, if
3790 edit_opd deletes entries, we'll use this array to adjust
3791 local syms in .opd. */
3793 asection
*func_section
;
3798 amt
= sec
->size
* sizeof (union opd_info
) / 24;
3799 opd_sym_map
= bfd_zalloc (abfd
, amt
);
3800 if (opd_sym_map
== NULL
)
3802 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
3805 if (htab
->sfpr
== NULL
3806 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
3809 rel_end
= relocs
+ sec
->reloc_count
;
3810 for (rel
= relocs
; rel
< rel_end
; rel
++)
3812 unsigned long r_symndx
;
3813 struct elf_link_hash_entry
*h
;
3814 enum elf_ppc64_reloc_type r_type
;
3817 r_symndx
= ELF64_R_SYM (rel
->r_info
);
3818 if (r_symndx
< symtab_hdr
->sh_info
)
3821 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3823 r_type
= ELF64_R_TYPE (rel
->r_info
);
3826 case R_PPC64_GOT_TLSLD16
:
3827 case R_PPC64_GOT_TLSLD16_LO
:
3828 case R_PPC64_GOT_TLSLD16_HI
:
3829 case R_PPC64_GOT_TLSLD16_HA
:
3830 ppc64_tlsld_got (abfd
)->refcount
+= 1;
3831 tls_type
= TLS_TLS
| TLS_LD
;
3834 case R_PPC64_GOT_TLSGD16
:
3835 case R_PPC64_GOT_TLSGD16_LO
:
3836 case R_PPC64_GOT_TLSGD16_HI
:
3837 case R_PPC64_GOT_TLSGD16_HA
:
3838 tls_type
= TLS_TLS
| TLS_GD
;
3841 case R_PPC64_GOT_TPREL16_DS
:
3842 case R_PPC64_GOT_TPREL16_LO_DS
:
3843 case R_PPC64_GOT_TPREL16_HI
:
3844 case R_PPC64_GOT_TPREL16_HA
:
3846 info
->flags
|= DF_STATIC_TLS
;
3847 tls_type
= TLS_TLS
| TLS_TPREL
;
3850 case R_PPC64_GOT_DTPREL16_DS
:
3851 case R_PPC64_GOT_DTPREL16_LO_DS
:
3852 case R_PPC64_GOT_DTPREL16_HI
:
3853 case R_PPC64_GOT_DTPREL16_HA
:
3854 tls_type
= TLS_TLS
| TLS_DTPREL
;
3856 sec
->has_tls_reloc
= 1;
3860 case R_PPC64_GOT16_DS
:
3861 case R_PPC64_GOT16_HA
:
3862 case R_PPC64_GOT16_HI
:
3863 case R_PPC64_GOT16_LO
:
3864 case R_PPC64_GOT16_LO_DS
:
3865 /* This symbol requires a global offset table entry. */
3866 sec
->has_gp_reloc
= 1;
3867 if (ppc64_elf_tdata (abfd
)->got
== NULL
3868 && !create_got_section (abfd
, info
))
3873 struct ppc_link_hash_entry
*eh
;
3874 struct got_entry
*ent
;
3876 eh
= (struct ppc_link_hash_entry
*) h
;
3877 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
3878 if (ent
->addend
== rel
->r_addend
3879 && ent
->owner
== abfd
3880 && ent
->tls_type
== tls_type
)
3884 bfd_size_type amt
= sizeof (*ent
);
3885 ent
= bfd_alloc (abfd
, amt
);
3888 ent
->next
= eh
->elf
.got
.glist
;
3889 ent
->addend
= rel
->r_addend
;
3891 ent
->tls_type
= tls_type
;
3892 ent
->got
.refcount
= 0;
3893 eh
->elf
.got
.glist
= ent
;
3895 ent
->got
.refcount
+= 1;
3896 eh
->tls_mask
|= tls_type
;
3899 /* This is a global offset table entry for a local symbol. */
3900 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3901 rel
->r_addend
, tls_type
))
3905 case R_PPC64_PLT16_HA
:
3906 case R_PPC64_PLT16_HI
:
3907 case R_PPC64_PLT16_LO
:
3910 /* This symbol requires a procedure linkage table entry. We
3911 actually build the entry in adjust_dynamic_symbol,
3912 because this might be a case of linking PIC code without
3913 linking in any dynamic objects, in which case we don't
3914 need to generate a procedure linkage table after all. */
3917 /* It does not make sense to have a procedure linkage
3918 table entry for a local symbol. */
3919 bfd_set_error (bfd_error_bad_value
);
3923 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3928 /* The following relocations don't need to propagate the
3929 relocation if linking a shared object since they are
3930 section relative. */
3931 case R_PPC64_SECTOFF
:
3932 case R_PPC64_SECTOFF_LO
:
3933 case R_PPC64_SECTOFF_HI
:
3934 case R_PPC64_SECTOFF_HA
:
3935 case R_PPC64_SECTOFF_DS
:
3936 case R_PPC64_SECTOFF_LO_DS
:
3937 case R_PPC64_DTPREL16
:
3938 case R_PPC64_DTPREL16_LO
:
3939 case R_PPC64_DTPREL16_HI
:
3940 case R_PPC64_DTPREL16_HA
:
3941 case R_PPC64_DTPREL16_DS
:
3942 case R_PPC64_DTPREL16_LO_DS
:
3943 case R_PPC64_DTPREL16_HIGHER
:
3944 case R_PPC64_DTPREL16_HIGHERA
:
3945 case R_PPC64_DTPREL16_HIGHEST
:
3946 case R_PPC64_DTPREL16_HIGHESTA
:
3951 case R_PPC64_TOC16_LO
:
3952 case R_PPC64_TOC16_HI
:
3953 case R_PPC64_TOC16_HA
:
3954 case R_PPC64_TOC16_DS
:
3955 case R_PPC64_TOC16_LO_DS
:
3956 sec
->has_gp_reloc
= 1;
3959 /* This relocation describes the C++ object vtable hierarchy.
3960 Reconstruct it for later use during GC. */
3961 case R_PPC64_GNU_VTINHERIT
:
3962 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3966 /* This relocation describes which C++ vtable entries are actually
3967 used. Record for later use during GC. */
3968 case R_PPC64_GNU_VTENTRY
:
3969 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3974 case R_PPC64_REL14_BRTAKEN
:
3975 case R_PPC64_REL14_BRNTAKEN
:
3976 htab
->has_14bit_branch
= 1;
3982 /* We may need a .plt entry if the function this reloc
3983 refers to is in a shared lib. */
3984 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3987 if (h
== &htab
->tls_get_addr
->elf
3988 || h
== &htab
->tls_get_addr_fd
->elf
)
3989 sec
->has_tls_reloc
= 1;
3990 else if (htab
->tls_get_addr
== NULL
3991 && !strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
3992 && (h
->root
.root
.string
[15] == 0
3993 || h
->root
.root
.string
[15] == '@'))
3995 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
3996 sec
->has_tls_reloc
= 1;
3998 else if (htab
->tls_get_addr_fd
== NULL
3999 && !strncmp (h
->root
.root
.string
, "__tls_get_addr", 14)
4000 && (h
->root
.root
.string
[14] == 0
4001 || h
->root
.root
.string
[14] == '@'))
4003 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4004 sec
->has_tls_reloc
= 1;
4009 case R_PPC64_TPREL64
:
4010 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4012 info
->flags
|= DF_STATIC_TLS
;
4015 case R_PPC64_DTPMOD64
:
4016 if (rel
+ 1 < rel_end
4017 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4018 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4019 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4021 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4024 case R_PPC64_DTPREL64
:
4025 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4027 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4028 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4029 /* This is the second reloc of a dtpmod, dtprel pair.
4030 Don't mark with TLS_DTPREL. */
4034 sec
->has_tls_reloc
= 1;
4037 struct ppc_link_hash_entry
*eh
;
4038 eh
= (struct ppc_link_hash_entry
*) h
;
4039 eh
->tls_mask
|= tls_type
;
4042 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4043 rel
->r_addend
, tls_type
))
4046 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4048 /* One extra to simplify get_tls_mask. */
4049 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4050 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
4051 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4054 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4055 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4057 /* Mark the second slot of a GD or LD entry.
4058 -1 to indicate GD and -2 to indicate LD. */
4059 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4060 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4061 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4062 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4065 case R_PPC64_TPREL16
:
4066 case R_PPC64_TPREL16_LO
:
4067 case R_PPC64_TPREL16_HI
:
4068 case R_PPC64_TPREL16_HA
:
4069 case R_PPC64_TPREL16_DS
:
4070 case R_PPC64_TPREL16_LO_DS
:
4071 case R_PPC64_TPREL16_HIGHER
:
4072 case R_PPC64_TPREL16_HIGHERA
:
4073 case R_PPC64_TPREL16_HIGHEST
:
4074 case R_PPC64_TPREL16_HIGHESTA
:
4077 info
->flags
|= DF_STATIC_TLS
;
4082 case R_PPC64_ADDR64
:
4083 if (opd_sym_map
!= NULL
4084 && rel
+ 1 < rel_end
4085 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4089 if (h
->root
.root
.string
[0] == '.'
4090 && h
->root
.root
.string
[1] != 0
4091 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4094 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4100 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4105 opd_sym_map
[rel
->r_offset
/ 24] = s
;
4113 case R_PPC64_ADDR14
:
4114 case R_PPC64_ADDR14_BRNTAKEN
:
4115 case R_PPC64_ADDR14_BRTAKEN
:
4116 case R_PPC64_ADDR16
:
4117 case R_PPC64_ADDR16_DS
:
4118 case R_PPC64_ADDR16_HA
:
4119 case R_PPC64_ADDR16_HI
:
4120 case R_PPC64_ADDR16_HIGHER
:
4121 case R_PPC64_ADDR16_HIGHERA
:
4122 case R_PPC64_ADDR16_HIGHEST
:
4123 case R_PPC64_ADDR16_HIGHESTA
:
4124 case R_PPC64_ADDR16_LO
:
4125 case R_PPC64_ADDR16_LO_DS
:
4126 case R_PPC64_ADDR24
:
4127 case R_PPC64_ADDR32
:
4128 case R_PPC64_UADDR16
:
4129 case R_PPC64_UADDR32
:
4130 case R_PPC64_UADDR64
:
4132 if (h
!= NULL
&& !info
->shared
)
4133 /* We may need a copy reloc. */
4134 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
4136 /* Don't propagate .opd relocs. */
4137 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4140 /* If we are creating a shared library, and this is a reloc
4141 against a global symbol, or a non PC relative reloc
4142 against a local symbol, then we need to copy the reloc
4143 into the shared library. However, if we are linking with
4144 -Bsymbolic, we do not need to copy a reloc against a
4145 global symbol which is defined in an object we are
4146 including in the link (i.e., DEF_REGULAR is set). At
4147 this point we have not seen all the input files, so it is
4148 possible that DEF_REGULAR is not set now but will be set
4149 later (it is never cleared). In case of a weak definition,
4150 DEF_REGULAR may be cleared later by a strong definition in
4151 a shared library. We account for that possibility below by
4152 storing information in the dyn_relocs field of the hash
4153 table entry. A similar situation occurs when creating
4154 shared libraries and symbol visibility changes render the
4157 If on the other hand, we are creating an executable, we
4158 may need to keep relocations for symbols satisfied by a
4159 dynamic library if we manage to avoid copy relocs for the
4163 && (MUST_BE_DYN_RELOC (r_type
)
4165 && (! info
->symbolic
4166 || h
->root
.type
== bfd_link_hash_defweak
4167 || (h
->elf_link_hash_flags
4168 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
4169 || (ELIMINATE_COPY_RELOCS
4172 && (h
->root
.type
== bfd_link_hash_defweak
4173 || (h
->elf_link_hash_flags
4174 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
4176 struct ppc_dyn_relocs
*p
;
4177 struct ppc_dyn_relocs
**head
;
4179 /* We must copy these reloc types into the output file.
4180 Create a reloc section in dynobj and make room for
4187 name
= (bfd_elf_string_from_elf_section
4189 elf_elfheader (abfd
)->e_shstrndx
,
4190 elf_section_data (sec
)->rel_hdr
.sh_name
));
4194 if (strncmp (name
, ".rela", 5) != 0
4195 || strcmp (bfd_get_section_name (abfd
, sec
),
4198 (*_bfd_error_handler
)
4199 (_("%B: bad relocation section name `%s\'"),
4201 bfd_set_error (bfd_error_bad_value
);
4204 dynobj
= htab
->elf
.dynobj
;
4205 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4210 sreloc
= bfd_make_section (dynobj
, name
);
4211 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4212 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4213 if ((sec
->flags
& SEC_ALLOC
) != 0)
4214 flags
|= SEC_ALLOC
| SEC_LOAD
;
4216 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
4217 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4220 elf_section_data (sec
)->sreloc
= sreloc
;
4223 /* If this is a global symbol, we count the number of
4224 relocations we need for this symbol. */
4227 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4231 /* Track dynamic relocs needed for local syms too.
4232 We really need local syms available to do this
4236 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4241 head
= ((struct ppc_dyn_relocs
**)
4242 &elf_section_data (s
)->local_dynrel
);
4246 if (p
== NULL
|| p
->sec
!= sec
)
4248 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4259 if (!MUST_BE_DYN_RELOC (r_type
))
4272 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4273 of the code entry point, and its section. */
4276 opd_entry_value (asection
*opd_sec
,
4278 asection
**code_sec
,
4281 bfd
*opd_bfd
= opd_sec
->owner
;
4282 Elf_Internal_Rela
*lo
, *hi
, *look
;
4284 /* Go find the opd reloc at the sym address. */
4285 lo
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4286 BFD_ASSERT (lo
!= NULL
);
4287 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4291 look
= lo
+ (hi
- lo
) / 2;
4292 if (look
->r_offset
< offset
)
4294 else if (look
->r_offset
> offset
)
4298 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4299 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4300 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
4302 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
4306 if (symndx
< symtab_hdr
->sh_info
)
4308 Elf_Internal_Sym
*sym
;
4310 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4313 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
4314 symtab_hdr
->sh_info
,
4315 0, NULL
, NULL
, NULL
);
4317 return (bfd_vma
) -1;
4318 symtab_hdr
->contents
= (bfd_byte
*) sym
;
4322 val
= sym
->st_value
;
4324 if ((sym
->st_shndx
!= SHN_UNDEF
4325 && sym
->st_shndx
< SHN_LORESERVE
)
4326 || sym
->st_shndx
> SHN_HIRESERVE
)
4327 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
4328 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
4332 struct elf_link_hash_entry
**sym_hashes
;
4333 struct elf_link_hash_entry
*rh
;
4335 sym_hashes
= elf_sym_hashes (opd_bfd
);
4336 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
4337 while (rh
->root
.type
== bfd_link_hash_indirect
4338 || rh
->root
.type
== bfd_link_hash_warning
)
4339 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
4340 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
4341 || rh
->root
.type
== bfd_link_hash_defweak
);
4342 val
= rh
->root
.u
.def
.value
;
4343 sec
= rh
->root
.u
.def
.section
;
4345 val
+= look
->r_addend
;
4346 if (code_off
!= NULL
)
4348 if (code_sec
!= NULL
)
4350 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
4351 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
4357 return (bfd_vma
) -1;
4360 /* Return the section that should be marked against GC for a given
4364 ppc64_elf_gc_mark_hook (asection
*sec
,
4365 struct bfd_link_info
*info
,
4366 Elf_Internal_Rela
*rel
,
4367 struct elf_link_hash_entry
*h
,
4368 Elf_Internal_Sym
*sym
)
4372 /* First mark all our entry sym sections. */
4373 if (info
->gc_sym_list
!= NULL
)
4375 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4376 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
4378 info
->gc_sym_list
= NULL
;
4381 struct ppc_link_hash_entry
*eh
;
4383 eh
= (struct ppc_link_hash_entry
*)
4384 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
4387 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
4388 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
4391 if (eh
->is_func_descriptor
)
4392 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4393 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4394 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4395 eh
->elf
.root
.u
.def
.value
,
4396 &rsec
, NULL
) != (bfd_vma
) -1)
4402 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4404 rsec
= eh
->elf
.root
.u
.def
.section
;
4406 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4410 while (sym
!= NULL
);
4413 /* Syms return NULL if we're marking .opd, so we avoid marking all
4414 function sections, as all functions are referenced in .opd. */
4416 if (get_opd_info (sec
) != NULL
)
4421 enum elf_ppc64_reloc_type r_type
;
4422 struct ppc_link_hash_entry
*eh
;
4424 r_type
= ELF64_R_TYPE (rel
->r_info
);
4427 case R_PPC64_GNU_VTINHERIT
:
4428 case R_PPC64_GNU_VTENTRY
:
4432 switch (h
->root
.type
)
4434 case bfd_link_hash_defined
:
4435 case bfd_link_hash_defweak
:
4436 eh
= (struct ppc_link_hash_entry
*) h
;
4437 if (eh
->oh
!= NULL
&& eh
->oh
->is_func_descriptor
)
4440 /* Function descriptor syms cause the associated
4441 function code sym section to be marked. */
4442 if (eh
->is_func_descriptor
)
4444 /* They also mark their opd section. */
4445 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4446 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4447 ppc64_elf_gc_mark_hook
);
4449 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
4451 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
4452 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
4453 eh
->elf
.root
.u
.def
.value
,
4454 &rsec
, NULL
) != (bfd_vma
) -1)
4456 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
4457 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
4458 ppc64_elf_gc_mark_hook
);
4461 rsec
= h
->root
.u
.def
.section
;
4464 case bfd_link_hash_common
:
4465 rsec
= h
->root
.u
.c
.p
->section
;
4475 asection
**opd_sym_section
;
4477 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4478 opd_sym_section
= get_opd_info (rsec
);
4479 if (opd_sym_section
!= NULL
)
4482 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
4484 rsec
= opd_sym_section
[sym
->st_value
/ 24];
4491 /* Update the .got, .plt. and dynamic reloc reference counts for the
4492 section being removed. */
4495 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4496 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4498 struct ppc_link_hash_table
*htab
;
4499 Elf_Internal_Shdr
*symtab_hdr
;
4500 struct elf_link_hash_entry
**sym_hashes
;
4501 struct got_entry
**local_got_ents
;
4502 const Elf_Internal_Rela
*rel
, *relend
;
4504 if ((sec
->flags
& SEC_ALLOC
) == 0)
4507 elf_section_data (sec
)->local_dynrel
= NULL
;
4509 htab
= ppc_hash_table (info
);
4510 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4511 sym_hashes
= elf_sym_hashes (abfd
);
4512 local_got_ents
= elf_local_got_ents (abfd
);
4514 relend
= relocs
+ sec
->reloc_count
;
4515 for (rel
= relocs
; rel
< relend
; rel
++)
4517 unsigned long r_symndx
;
4518 enum elf_ppc64_reloc_type r_type
;
4519 struct elf_link_hash_entry
*h
= NULL
;
4522 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4523 r_type
= ELF64_R_TYPE (rel
->r_info
);
4524 if (r_symndx
>= symtab_hdr
->sh_info
)
4526 struct ppc_link_hash_entry
*eh
;
4527 struct ppc_dyn_relocs
**pp
;
4528 struct ppc_dyn_relocs
*p
;
4530 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4531 eh
= (struct ppc_link_hash_entry
*) h
;
4533 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4536 /* Everything must go for SEC. */
4544 case R_PPC64_GOT_TLSLD16
:
4545 case R_PPC64_GOT_TLSLD16_LO
:
4546 case R_PPC64_GOT_TLSLD16_HI
:
4547 case R_PPC64_GOT_TLSLD16_HA
:
4548 ppc64_tlsld_got (abfd
)->refcount
-= 1;
4549 tls_type
= TLS_TLS
| TLS_LD
;
4552 case R_PPC64_GOT_TLSGD16
:
4553 case R_PPC64_GOT_TLSGD16_LO
:
4554 case R_PPC64_GOT_TLSGD16_HI
:
4555 case R_PPC64_GOT_TLSGD16_HA
:
4556 tls_type
= TLS_TLS
| TLS_GD
;
4559 case R_PPC64_GOT_TPREL16_DS
:
4560 case R_PPC64_GOT_TPREL16_LO_DS
:
4561 case R_PPC64_GOT_TPREL16_HI
:
4562 case R_PPC64_GOT_TPREL16_HA
:
4563 tls_type
= TLS_TLS
| TLS_TPREL
;
4566 case R_PPC64_GOT_DTPREL16_DS
:
4567 case R_PPC64_GOT_DTPREL16_LO_DS
:
4568 case R_PPC64_GOT_DTPREL16_HI
:
4569 case R_PPC64_GOT_DTPREL16_HA
:
4570 tls_type
= TLS_TLS
| TLS_DTPREL
;
4574 case R_PPC64_GOT16_DS
:
4575 case R_PPC64_GOT16_HA
:
4576 case R_PPC64_GOT16_HI
:
4577 case R_PPC64_GOT16_LO
:
4578 case R_PPC64_GOT16_LO_DS
:
4581 struct got_entry
*ent
;
4586 ent
= local_got_ents
[r_symndx
];
4588 for (; ent
!= NULL
; ent
= ent
->next
)
4589 if (ent
->addend
== rel
->r_addend
4590 && ent
->owner
== abfd
4591 && ent
->tls_type
== tls_type
)
4595 if (ent
->got
.refcount
> 0)
4596 ent
->got
.refcount
-= 1;
4600 case R_PPC64_PLT16_HA
:
4601 case R_PPC64_PLT16_HI
:
4602 case R_PPC64_PLT16_LO
:
4606 case R_PPC64_REL14_BRNTAKEN
:
4607 case R_PPC64_REL14_BRTAKEN
:
4611 struct plt_entry
*ent
;
4613 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4614 if (ent
->addend
== rel
->r_addend
)
4618 if (ent
->plt
.refcount
> 0)
4619 ent
->plt
.refcount
-= 1;
4630 /* Called via elf_link_hash_traverse to transfer dynamic linking
4631 information on function code symbol entries to their corresponding
4632 function descriptor symbol entries. */
4634 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4636 struct bfd_link_info
*info
;
4637 struct ppc_link_hash_table
*htab
;
4638 struct plt_entry
*ent
;
4639 struct ppc_link_hash_entry
*fh
;
4640 struct ppc_link_hash_entry
*fdh
;
4641 bfd_boolean force_local
;
4643 fh
= (struct ppc_link_hash_entry
*) h
;
4644 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
4647 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
4648 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
4651 htab
= ppc_hash_table (info
);
4653 /* If this is a function code symbol, transfer dynamic linking
4654 information to the function descriptor symbol. */
4658 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4659 if (ent
->plt
.refcount
> 0)
4662 || fh
->elf
.root
.root
.string
[0] != '.'
4663 || fh
->elf
.root
.root
.string
[1] == '\0')
4666 /* Find the corresponding function descriptor symbol. Create it
4667 as undefined if necessary. */
4669 fdh
= get_fdh (fh
, htab
);
4671 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
4672 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
4673 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
4677 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
4678 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
4682 struct bfd_link_hash_entry
*bh
;
4684 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4685 newsym
= bfd_make_empty_symbol (abfd
);
4686 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4687 newsym
->section
= bfd_und_section_ptr
;
4689 newsym
->flags
= BSF_OBJECT
;
4690 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4691 newsym
->flags
|= BSF_WEAK
;
4693 bh
= &fdh
->elf
.root
;
4694 if ( !(_bfd_generic_link_add_one_symbol
4695 (info
, abfd
, newsym
->name
, newsym
->flags
,
4696 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
4700 fdh
= (struct ppc_link_hash_entry
*) bh
;
4701 fdh
->elf
.elf_link_hash_flags
&= ~ELF_LINK_NON_ELF
;
4703 fdh
->elf
.type
= STT_OBJECT
;
4707 && (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
4709 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
4710 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) != 0
4711 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
4712 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
4714 if (fdh
->elf
.dynindx
== -1)
4715 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
4717 fdh
->elf
.elf_link_hash_flags
4718 |= (fh
->elf
.elf_link_hash_flags
& (ELF_LINK_HASH_REF_REGULAR
4719 | ELF_LINK_HASH_REF_DYNAMIC
4720 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4721 | ELF_LINK_NON_GOT_REF
));
4722 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
4724 struct plt_entry
**ep
= &fdh
->elf
.plt
.plist
;
4727 *ep
= fh
->elf
.plt
.plist
;
4728 fh
->elf
.plt
.plist
= NULL
;
4729 fdh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
4731 fdh
->is_func_descriptor
= 1;
4736 /* Now that the info is on the function descriptor, clear the
4737 function code sym info. Any function code syms for which we
4738 don't have a definition in a regular file, we force local.
4739 This prevents a shared library from exporting syms that have
4740 been imported from another library. Function code syms that
4741 are really in the library we must leave global to prevent the
4742 linker dragging in a definition from a static library. */
4745 && ((fh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
4747 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
4748 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0));
4749 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
4754 #define MIN_SAVE_FPR 14
4755 #define MAX_SAVE_FPR 31
4757 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4758 this hook to a) provide some gcc support functions, and b) transfer
4759 dynamic linking information gathered so far on function code symbol
4760 entries, to their corresponding function descriptor symbol entries. */
4762 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
4763 struct bfd_link_info
*info
)
4765 struct ppc_link_hash_table
*htab
;
4766 unsigned int lowest_savef
= MAX_SAVE_FPR
+ 2;
4767 unsigned int lowest_restf
= MAX_SAVE_FPR
+ 2;
4769 struct elf_link_hash_entry
*h
;
4773 htab
= ppc_hash_table (info
);
4775 if (htab
->sfpr
== NULL
)
4776 /* We don't have any relocs. */
4779 /* First provide any missing ._savef* and ._restf* functions. */
4780 memcpy (sym
, "._savef14", 10);
4781 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4783 sym
[7] = i
/ 10 + '0';
4784 sym
[8] = i
% 10 + '0';
4785 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4787 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
4789 if (lowest_savef
> i
)
4791 h
->root
.type
= bfd_link_hash_defined
;
4792 h
->root
.u
.def
.section
= htab
->sfpr
;
4793 h
->root
.u
.def
.value
= (i
- lowest_savef
) * 4;
4795 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4796 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
4800 memcpy (sym
, "._restf14", 10);
4801 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4803 sym
[7] = i
/ 10 + '0';
4804 sym
[8] = i
% 10 + '0';
4805 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4807 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
4809 if (lowest_restf
> i
)
4811 h
->root
.type
= bfd_link_hash_defined
;
4812 h
->root
.u
.def
.section
= htab
->sfpr
;
4813 h
->root
.u
.def
.value
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4814 + (i
- lowest_restf
) * 4);
4816 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4817 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
4821 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
4823 htab
->sfpr
->size
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4824 + (MAX_SAVE_FPR
+ 2 - lowest_restf
) * 4);
4826 if (htab
->sfpr
->size
== 0)
4828 _bfd_strip_section_from_output (info
, htab
->sfpr
);
4832 p
= bfd_alloc (htab
->elf
.dynobj
, htab
->sfpr
->size
);
4835 htab
->sfpr
->contents
= p
;
4837 for (i
= lowest_savef
; i
<= MAX_SAVE_FPR
; i
++)
4839 unsigned int fpr
= i
<< 21;
4840 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4841 bfd_put_32 (htab
->elf
.dynobj
, STFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4844 if (lowest_savef
<= MAX_SAVE_FPR
)
4846 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4850 for (i
= lowest_restf
; i
<= MAX_SAVE_FPR
; i
++)
4852 unsigned int fpr
= i
<< 21;
4853 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4854 bfd_put_32 (htab
->elf
.dynobj
, LFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4857 if (lowest_restf
<= MAX_SAVE_FPR
)
4858 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4863 /* Adjust a symbol defined by a dynamic object and referenced by a
4864 regular object. The current definition is in some section of the
4865 dynamic object, but we're not including those sections. We have to
4866 change the definition to something the rest of the link can
4870 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4871 struct elf_link_hash_entry
*h
)
4873 struct ppc_link_hash_table
*htab
;
4875 unsigned int power_of_two
;
4877 htab
= ppc_hash_table (info
);
4879 /* Deal with function syms. */
4880 if (h
->type
== STT_FUNC
4881 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
4883 /* Clear procedure linkage table information for any symbol that
4884 won't need a .plt entry. */
4885 struct plt_entry
*ent
;
4886 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4887 if (ent
->plt
.refcount
> 0)
4890 || SYMBOL_CALLS_LOCAL (info
, h
)
4891 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4892 && h
->root
.type
== bfd_link_hash_undefweak
))
4894 h
->plt
.plist
= NULL
;
4895 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
4899 h
->plt
.plist
= NULL
;
4901 /* If this is a weak symbol, and there is a real definition, the
4902 processor independent code will have arranged for us to see the
4903 real definition first, and we can just use the same value. */
4904 if (h
->weakdef
!= NULL
)
4906 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
4907 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
4908 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
4909 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
4910 if (ELIMINATE_COPY_RELOCS
)
4911 h
->elf_link_hash_flags
4912 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
4913 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
4917 /* If we are creating a shared library, we must presume that the
4918 only references to the symbol are via the global offset table.
4919 For such cases we need not do anything here; the relocations will
4920 be handled correctly by relocate_section. */
4924 /* If there are no references to this symbol that do not use the
4925 GOT, we don't need to generate a copy reloc. */
4926 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
4929 if (ELIMINATE_COPY_RELOCS
)
4931 struct ppc_link_hash_entry
* eh
;
4932 struct ppc_dyn_relocs
*p
;
4934 eh
= (struct ppc_link_hash_entry
*) h
;
4935 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4937 s
= p
->sec
->output_section
;
4938 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4942 /* If we didn't find any dynamic relocs in read-only sections, then
4943 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4946 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
4951 if (h
->plt
.plist
!= NULL
)
4953 /* We should never get here, but unfortunately there are versions
4954 of gcc out there that improperly (for this ABI) put initialized
4955 function pointers, vtable refs and suchlike in read-only
4956 sections. Allow them to proceed, but warn that this might
4957 break at runtime. */
4958 (*_bfd_error_handler
)
4959 (_("copy reloc against `%s' requires lazy plt linking; "
4960 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4961 h
->root
.root
.string
);
4964 /* This is a reference to a symbol defined by a dynamic object which
4965 is not a function. */
4967 /* We must allocate the symbol in our .dynbss section, which will
4968 become part of the .bss section of the executable. There will be
4969 an entry for this symbol in the .dynsym section. The dynamic
4970 object will contain position independent code, so all references
4971 from the dynamic object to this symbol will go through the global
4972 offset table. The dynamic linker will use the .dynsym entry to
4973 determine the address it must put in the global offset table, so
4974 both the dynamic object and the regular object will refer to the
4975 same memory location for the variable. */
4977 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4978 to copy the initial value out of the dynamic object and into the
4979 runtime process image. We need to remember the offset into the
4980 .rela.bss section we are going to use. */
4981 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4983 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
4984 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
4987 /* We need to figure out the alignment required for this symbol. I
4988 have no idea how ELF linkers handle this. */
4989 power_of_two
= bfd_log2 (h
->size
);
4990 if (power_of_two
> 4)
4993 /* Apply the required alignment. */
4995 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
4996 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
4998 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5002 /* Define the symbol as being at this point in the section. */
5003 h
->root
.u
.def
.section
= s
;
5004 h
->root
.u
.def
.value
= s
->size
;
5006 /* Increment the section size to make room for the symbol. */
5012 /* If given a function descriptor symbol, hide both the function code
5013 sym and the descriptor. */
5015 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5016 struct elf_link_hash_entry
*h
,
5017 bfd_boolean force_local
)
5019 struct ppc_link_hash_entry
*eh
;
5020 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5022 eh
= (struct ppc_link_hash_entry
*) h
;
5023 if (eh
->is_func_descriptor
)
5025 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5030 struct ppc_link_hash_table
*htab
;
5033 /* We aren't supposed to use alloca in BFD because on
5034 systems which do not have alloca the version in libiberty
5035 calls xmalloc, which might cause the program to crash
5036 when it runs out of memory. This function doesn't have a
5037 return status, so there's no way to gracefully return an
5038 error. So cheat. We know that string[-1] can be safely
5039 accessed; It's either a string in an ELF string table,
5040 or allocated in an objalloc structure. */
5042 p
= eh
->elf
.root
.root
.string
- 1;
5045 htab
= ppc_hash_table (info
);
5046 fh
= (struct ppc_link_hash_entry
*)
5047 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5050 /* Unfortunately, if it so happens that the string we were
5051 looking for was allocated immediately before this string,
5052 then we overwrote the string terminator. That's the only
5053 reason the lookup should fail. */
5056 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5057 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5059 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5060 fh
= (struct ppc_link_hash_entry
*)
5061 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5070 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5075 get_sym_h (struct elf_link_hash_entry
**hp
,
5076 Elf_Internal_Sym
**symp
,
5079 Elf_Internal_Sym
**locsymsp
,
5080 unsigned long r_symndx
,
5083 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5085 if (r_symndx
>= symtab_hdr
->sh_info
)
5087 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5088 struct elf_link_hash_entry
*h
;
5090 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5091 while (h
->root
.type
== bfd_link_hash_indirect
5092 || h
->root
.type
== bfd_link_hash_warning
)
5093 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5101 if (symsecp
!= NULL
)
5103 asection
*symsec
= NULL
;
5104 if (h
->root
.type
== bfd_link_hash_defined
5105 || h
->root
.type
== bfd_link_hash_defweak
)
5106 symsec
= h
->root
.u
.def
.section
;
5110 if (tls_maskp
!= NULL
)
5112 struct ppc_link_hash_entry
*eh
;
5114 eh
= (struct ppc_link_hash_entry
*) h
;
5115 *tls_maskp
= &eh
->tls_mask
;
5120 Elf_Internal_Sym
*sym
;
5121 Elf_Internal_Sym
*locsyms
= *locsymsp
;
5123 if (locsyms
== NULL
)
5125 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5126 if (locsyms
== NULL
)
5127 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5128 symtab_hdr
->sh_info
,
5129 0, NULL
, NULL
, NULL
);
5130 if (locsyms
== NULL
)
5132 *locsymsp
= locsyms
;
5134 sym
= locsyms
+ r_symndx
;
5142 if (symsecp
!= NULL
)
5144 asection
*symsec
= NULL
;
5145 if ((sym
->st_shndx
!= SHN_UNDEF
5146 && sym
->st_shndx
< SHN_LORESERVE
)
5147 || sym
->st_shndx
> SHN_HIRESERVE
)
5148 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
5152 if (tls_maskp
!= NULL
)
5154 struct got_entry
**lgot_ents
;
5158 lgot_ents
= elf_local_got_ents (ibfd
);
5159 if (lgot_ents
!= NULL
)
5161 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
5162 tls_mask
= &lgot_masks
[r_symndx
];
5164 *tls_maskp
= tls_mask
;
5170 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5171 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5172 type suitable for optimization, and 1 otherwise. */
5175 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
5176 Elf_Internal_Sym
**locsymsp
,
5177 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
5179 unsigned long r_symndx
;
5181 struct elf_link_hash_entry
*h
;
5182 Elf_Internal_Sym
*sym
;
5186 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5187 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5190 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
5192 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
5195 /* Look inside a TOC section too. */
5198 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
5199 off
= h
->root
.u
.def
.value
;
5202 off
= sym
->st_value
;
5203 off
+= rel
->r_addend
;
5204 BFD_ASSERT (off
% 8 == 0);
5205 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
5206 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
5207 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
5209 if (toc_symndx
!= NULL
)
5210 *toc_symndx
= r_symndx
;
5212 || ((h
->root
.type
== bfd_link_hash_defined
5213 || h
->root
.type
== bfd_link_hash_defweak
)
5214 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
5215 && (next_r
== -1 || next_r
== -2))
5220 /* Adjust all global syms defined in opd sections. In gcc generated
5221 code for the old ABI, these will already have been done. */
5224 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
5226 struct ppc_link_hash_entry
*eh
;
5230 if (h
->root
.type
== bfd_link_hash_indirect
)
5233 if (h
->root
.type
== bfd_link_hash_warning
)
5234 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5236 if (h
->root
.type
!= bfd_link_hash_defined
5237 && h
->root
.type
!= bfd_link_hash_defweak
)
5240 eh
= (struct ppc_link_hash_entry
*) h
;
5241 if (eh
->adjust_done
)
5244 sym_sec
= eh
->elf
.root
.u
.def
.section
;
5245 opd_adjust
= get_opd_info (sym_sec
);
5246 if (opd_adjust
!= NULL
)
5248 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 24];
5251 /* This entry has been deleted. */
5252 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
5255 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
5256 if (elf_discarded_section (dsec
))
5258 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
5262 eh
->elf
.root
.u
.def
.value
= 0;
5263 eh
->elf
.root
.u
.def
.section
= dsec
;
5266 eh
->elf
.root
.u
.def
.value
+= adjust
;
5267 eh
->adjust_done
= 1;
5272 /* Remove unused Official Procedure Descriptor entries. Currently we
5273 only remove those associated with functions in discarded link-once
5274 sections, or weakly defined functions that have been overridden. It
5275 would be possible to remove many more entries for statically linked
5279 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
)
5282 bfd_boolean some_edited
= FALSE
;
5284 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5287 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5288 Elf_Internal_Shdr
*symtab_hdr
;
5289 Elf_Internal_Sym
*local_syms
;
5290 struct elf_link_hash_entry
**sym_hashes
;
5294 bfd_boolean need_edit
;
5296 sec
= bfd_get_section_by_name (ibfd
, ".opd");
5300 amt
= sec
->size
* sizeof (long) / 24;
5301 opd_adjust
= get_opd_info (sec
);
5302 if (opd_adjust
== NULL
)
5304 /* Must be a ld -r link. ie. check_relocs hasn't been
5306 opd_adjust
= bfd_zalloc (obfd
, amt
);
5307 ppc64_elf_section_data (sec
)->opd
.adjust
= opd_adjust
;
5309 memset (opd_adjust
, 0, amt
);
5311 if (sec
->output_section
== bfd_abs_section_ptr
)
5314 /* Look through the section relocs. */
5315 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
5319 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5320 sym_hashes
= elf_sym_hashes (ibfd
);
5322 /* Read the relocations. */
5323 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5325 if (relstart
== NULL
)
5328 /* First run through the relocs to check they are sane, and to
5329 determine whether we need to edit this opd section. */
5332 relend
= relstart
+ sec
->reloc_count
;
5333 for (rel
= relstart
; rel
< relend
; )
5335 enum elf_ppc64_reloc_type r_type
;
5336 unsigned long r_symndx
;
5338 struct elf_link_hash_entry
*h
;
5339 Elf_Internal_Sym
*sym
;
5341 /* .opd contains a regular array of 24 byte entries. We're
5342 only interested in the reloc pointing to a function entry
5344 if (rel
->r_offset
!= offset
5345 || rel
+ 1 >= relend
5346 || (rel
+ 1)->r_offset
!= offset
+ 8)
5348 /* If someone messes with .opd alignment then after a
5349 "ld -r" we might have padding in the middle of .opd.
5350 Also, there's nothing to prevent someone putting
5351 something silly in .opd with the assembler. No .opd
5352 optimization for them! */
5353 (*_bfd_error_handler
)
5354 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
5359 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
5360 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
5362 (*_bfd_error_handler
)
5363 (_("%B: unexpected reloc type %u in .opd section"),
5369 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5370 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
5374 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
5376 const char *sym_name
;
5378 sym_name
= h
->root
.root
.string
;
5380 sym_name
= bfd_elf_local_sym_name (ibfd
, sym
);
5382 (*_bfd_error_handler
)
5383 (_("%B: undefined sym `%s' in .opd section"),
5389 /* opd entries are always for functions defined in the
5390 current input bfd. If the symbol isn't defined in the
5391 input bfd, then we won't be using the function in this
5392 bfd; It must be defined in a linkonce section in another
5393 bfd, or is weak. It's also possible that we are
5394 discarding the function due to a linker script /DISCARD/,
5395 which we test for via the output_section. */
5396 if (sym_sec
->owner
!= ibfd
5397 || sym_sec
->output_section
== bfd_abs_section_ptr
)
5402 /* Allow for the possibility of a reloc on the third word. */
5404 && rel
->r_offset
== offset
- 8)
5410 Elf_Internal_Rela
*write_rel
;
5411 bfd_byte
*rptr
, *wptr
;
5414 /* This seems a waste of time as input .opd sections are all
5415 zeros as generated by gcc, but I suppose there's no reason
5416 this will always be so. We might start putting something in
5417 the third word of .opd entries. */
5418 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
5421 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
5426 if (local_syms
!= NULL
5427 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
5429 if (elf_section_data (sec
)->relocs
!= relstart
)
5433 sec
->contents
= loc
;
5434 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
5437 elf_section_data (sec
)->relocs
= relstart
;
5439 wptr
= sec
->contents
;
5440 rptr
= sec
->contents
;
5441 write_rel
= relstart
;
5444 for (rel
= relstart
; rel
< relend
; rel
++)
5446 unsigned long r_symndx
;
5448 struct elf_link_hash_entry
*h
;
5449 Elf_Internal_Sym
*sym
;
5451 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5452 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
5456 if (rel
->r_offset
== offset
)
5458 struct ppc_link_hash_entry
*fdh
= NULL
;
5460 && h
->root
.root
.string
[0] == '.')
5461 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
5462 ppc_hash_table (info
));
5464 skip
= (sym_sec
->owner
!= ibfd
5465 || sym_sec
->output_section
== bfd_abs_section_ptr
);
5468 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
5470 /* Arrange for the function descriptor sym
5472 fdh
->elf
.root
.u
.def
.value
= 0;
5473 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
5475 opd_adjust
[rel
->r_offset
/ 24] = -1;
5479 /* We'll be keeping this opd entry. */
5483 /* Redefine the function descriptor symbol to
5484 this location in the opd section. It is
5485 necessary to update the value here rather
5486 than using an array of adjustments as we do
5487 for local symbols, because various places
5488 in the generic ELF code use the value
5489 stored in u.def.value. */
5490 fdh
->elf
.root
.u
.def
.value
= wptr
- sec
->contents
;
5491 fdh
->adjust_done
= 1;
5494 /* Local syms are a bit tricky. We could
5495 tweak them as they can be cached, but
5496 we'd need to look through the local syms
5497 for the function descriptor sym which we
5498 don't have at the moment. So keep an
5499 array of adjustments. */
5500 opd_adjust
[rel
->r_offset
/ 24] = wptr
- rptr
;
5503 memcpy (wptr
, rptr
, 24);
5512 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
5515 /* We won't be needing dynamic relocs here. */
5516 struct ppc_dyn_relocs
**pp
;
5517 struct ppc_dyn_relocs
*p
;
5520 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5521 else if (sym_sec
!= NULL
)
5522 pp
= ((struct ppc_dyn_relocs
**)
5523 &elf_section_data (sym_sec
)->local_dynrel
);
5525 pp
= ((struct ppc_dyn_relocs
**)
5526 &elf_section_data (sec
)->local_dynrel
);
5527 while ((p
= *pp
) != NULL
)
5542 /* We need to adjust any reloc offsets to point to the
5543 new opd entries. While we're at it, we may as well
5544 remove redundant relocs. */
5545 rel
->r_offset
+= wptr
- rptr
;
5546 if (write_rel
!= rel
)
5547 memcpy (write_rel
, rel
, sizeof (*rel
));
5552 sec
->size
= wptr
- sec
->contents
;
5553 sec
->reloc_count
= write_rel
- relstart
;
5554 /* Fudge the size too, as this is used later in
5555 elf_bfd_final_link if we are emitting relocs. */
5556 elf_section_data (sec
)->rel_hdr
.sh_size
5557 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
5558 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
5561 else if (elf_section_data (sec
)->relocs
!= relstart
)
5564 if (local_syms
!= NULL
5565 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
5567 if (!info
->keep_memory
)
5570 symtab_hdr
->contents
= (unsigned char *) local_syms
;
5575 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
5580 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
5583 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5585 struct ppc_link_hash_table
*htab
;
5587 htab
= ppc_hash_table (info
);
5588 if (htab
->tls_get_addr
!= NULL
)
5590 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
5592 while (h
->elf
.root
.type
== bfd_link_hash_indirect
5593 || h
->elf
.root
.type
== bfd_link_hash_warning
)
5594 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
5596 htab
->tls_get_addr
= h
;
5598 if (htab
->tls_get_addr_fd
== NULL
5600 && h
->oh
->is_func_descriptor
)
5601 htab
->tls_get_addr_fd
= h
->oh
;
5604 if (htab
->tls_get_addr_fd
!= NULL
)
5606 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
5608 while (h
->elf
.root
.type
== bfd_link_hash_indirect
5609 || h
->elf
.root
.type
== bfd_link_hash_warning
)
5610 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
5612 htab
->tls_get_addr_fd
= h
;
5615 return _bfd_elf_tls_setup (obfd
, info
);
5618 /* Run through all the TLS relocs looking for optimization
5619 opportunities. The linker has been hacked (see ppc64elf.em) to do
5620 a preliminary section layout so that we know the TLS segment
5621 offsets. We can't optimize earlier because some optimizations need
5622 to know the tp offset, and we need to optimize before allocating
5623 dynamic relocations. */
5626 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
5630 struct ppc_link_hash_table
*htab
;
5632 if (info
->relocatable
|| info
->shared
)
5635 htab
= ppc_hash_table (info
);
5636 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5638 Elf_Internal_Sym
*locsyms
= NULL
;
5640 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5641 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5643 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5644 int expecting_tls_get_addr
;
5646 /* Read the relocations. */
5647 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5649 if (relstart
== NULL
)
5652 expecting_tls_get_addr
= 0;
5653 relend
= relstart
+ sec
->reloc_count
;
5654 for (rel
= relstart
; rel
< relend
; rel
++)
5656 enum elf_ppc64_reloc_type r_type
;
5657 unsigned long r_symndx
;
5658 struct elf_link_hash_entry
*h
;
5659 Elf_Internal_Sym
*sym
;
5662 char tls_set
, tls_clear
, tls_type
= 0;
5664 bfd_boolean ok_tprel
, is_local
;
5666 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5667 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
5671 if (elf_section_data (sec
)->relocs
!= relstart
)
5674 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5675 != (unsigned char *) locsyms
))
5682 if (h
->root
.type
!= bfd_link_hash_defined
5683 && h
->root
.type
!= bfd_link_hash_defweak
)
5685 value
= h
->root
.u
.def
.value
;
5688 /* Symbols referenced by TLS relocs must be of type
5689 STT_TLS. So no need for .opd local sym adjust. */
5690 value
= sym
->st_value
;
5695 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
5698 value
+= sym_sec
->output_offset
;
5699 value
+= sym_sec
->output_section
->vma
;
5700 value
-= htab
->elf
.tls_sec
->vma
;
5701 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
5702 < (bfd_vma
) 1 << 32);
5705 r_type
= ELF64_R_TYPE (rel
->r_info
);
5708 case R_PPC64_GOT_TLSLD16
:
5709 case R_PPC64_GOT_TLSLD16_LO
:
5710 case R_PPC64_GOT_TLSLD16_HI
:
5711 case R_PPC64_GOT_TLSLD16_HA
:
5712 /* These relocs should never be against a symbol
5713 defined in a shared lib. Leave them alone if
5714 that turns out to be the case. */
5715 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
5722 tls_type
= TLS_TLS
| TLS_LD
;
5723 expecting_tls_get_addr
= 1;
5726 case R_PPC64_GOT_TLSGD16
:
5727 case R_PPC64_GOT_TLSGD16_LO
:
5728 case R_PPC64_GOT_TLSGD16_HI
:
5729 case R_PPC64_GOT_TLSGD16_HA
:
5735 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5737 tls_type
= TLS_TLS
| TLS_GD
;
5738 expecting_tls_get_addr
= 1;
5741 case R_PPC64_GOT_TPREL16_DS
:
5742 case R_PPC64_GOT_TPREL16_LO_DS
:
5743 case R_PPC64_GOT_TPREL16_HI
:
5744 case R_PPC64_GOT_TPREL16_HA
:
5745 expecting_tls_get_addr
= 0;
5750 tls_clear
= TLS_TPREL
;
5751 tls_type
= TLS_TLS
| TLS_TPREL
;
5758 case R_PPC64_REL14_BRTAKEN
:
5759 case R_PPC64_REL14_BRNTAKEN
:
5762 && (h
== &htab
->tls_get_addr
->elf
5763 || h
== &htab
->tls_get_addr_fd
->elf
))
5765 if (!expecting_tls_get_addr
5767 && ((ELF64_R_TYPE (rel
[-1].r_info
)
5769 || (ELF64_R_TYPE (rel
[-1].r_info
)
5770 == R_PPC64_TOC16_LO
)))
5772 /* Check for toc tls entries. */
5776 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
5780 if (toc_tls
!= NULL
)
5781 expecting_tls_get_addr
= retval
> 1;
5784 if (expecting_tls_get_addr
)
5786 struct plt_entry
*ent
;
5787 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
5788 if (ent
->addend
== 0)
5790 if (ent
->plt
.refcount
> 0)
5791 ent
->plt
.refcount
-= 1;
5796 expecting_tls_get_addr
= 0;
5799 case R_PPC64_TPREL64
:
5800 expecting_tls_get_addr
= 0;
5804 tls_set
= TLS_EXPLICIT
;
5805 tls_clear
= TLS_TPREL
;
5811 case R_PPC64_DTPMOD64
:
5812 expecting_tls_get_addr
= 0;
5813 if (rel
+ 1 < relend
5815 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
5816 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5820 tls_set
= TLS_EXPLICIT
| TLS_GD
;
5823 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
5832 tls_set
= TLS_EXPLICIT
;
5838 expecting_tls_get_addr
= 0;
5842 if ((tls_set
& TLS_EXPLICIT
) == 0)
5844 struct got_entry
*ent
;
5846 /* Adjust got entry for this reloc. */
5850 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
5852 for (; ent
!= NULL
; ent
= ent
->next
)
5853 if (ent
->addend
== rel
->r_addend
5854 && ent
->owner
== ibfd
5855 && ent
->tls_type
== tls_type
)
5862 /* We managed to get rid of a got entry. */
5863 if (ent
->got
.refcount
> 0)
5864 ent
->got
.refcount
-= 1;
5869 struct ppc_link_hash_entry
* eh
;
5870 struct ppc_dyn_relocs
**pp
;
5871 struct ppc_dyn_relocs
*p
;
5873 /* Adjust dynamic relocs. */
5874 eh
= (struct ppc_link_hash_entry
*) h
;
5875 for (pp
= &eh
->dyn_relocs
;
5880 /* If we got rid of a DTPMOD/DTPREL reloc
5881 pair then we'll lose one or two dyn
5883 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
5892 *tls_mask
|= tls_set
;
5893 *tls_mask
&= ~tls_clear
;
5896 if (elf_section_data (sec
)->relocs
!= relstart
)
5901 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5902 != (unsigned char *) locsyms
))
5904 if (!info
->keep_memory
)
5907 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
5913 /* Allocate space in .plt, .got and associated reloc sections for
5917 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5919 struct bfd_link_info
*info
;
5920 struct ppc_link_hash_table
*htab
;
5922 struct ppc_link_hash_entry
*eh
;
5923 struct ppc_dyn_relocs
*p
;
5924 struct got_entry
*gent
;
5926 if (h
->root
.type
== bfd_link_hash_indirect
)
5929 if (h
->root
.type
== bfd_link_hash_warning
)
5930 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5932 info
= (struct bfd_link_info
*) inf
;
5933 htab
= ppc_hash_table (info
);
5935 if (htab
->elf
.dynamic_sections_created
5937 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
5939 struct plt_entry
*pent
;
5940 bfd_boolean doneone
= FALSE
;
5941 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
5942 if (pent
->plt
.refcount
> 0)
5944 /* If this is the first .plt entry, make room for the special
5948 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
5950 pent
->plt
.offset
= s
->size
;
5952 /* Make room for this entry. */
5953 s
->size
+= PLT_ENTRY_SIZE
;
5955 /* Make room for the .glink code. */
5958 s
->size
+= GLINK_CALL_STUB_SIZE
;
5959 /* We need bigger stubs past index 32767. */
5960 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
5964 /* We also need to make an entry in the .rela.plt section. */
5966 s
->size
+= sizeof (Elf64_External_Rela
);
5970 pent
->plt
.offset
= (bfd_vma
) -1;
5973 h
->plt
.plist
= NULL
;
5974 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5979 h
->plt
.plist
= NULL
;
5980 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5983 eh
= (struct ppc_link_hash_entry
*) h
;
5984 /* Run through the TLS GD got entries first if we're changing them
5986 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
5987 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
5988 if (gent
->got
.refcount
> 0
5989 && (gent
->tls_type
& TLS_GD
) != 0)
5991 /* This was a GD entry that has been converted to TPREL. If
5992 there happens to be a TPREL entry we can use that one. */
5993 struct got_entry
*ent
;
5994 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5995 if (ent
->got
.refcount
> 0
5996 && (ent
->tls_type
& TLS_TPREL
) != 0
5997 && ent
->addend
== gent
->addend
5998 && ent
->owner
== gent
->owner
)
6000 gent
->got
.refcount
= 0;
6004 /* If not, then we'll be using our own TPREL entry. */
6005 if (gent
->got
.refcount
!= 0)
6006 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
6009 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
6010 if (gent
->got
.refcount
> 0)
6014 /* Make sure this symbol is output as a dynamic symbol.
6015 Undefined weak syms won't yet be marked as dynamic,
6016 nor will all TLS symbols. */
6017 if (h
->dynindx
== -1
6018 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6020 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6024 if ((gent
->tls_type
& TLS_LD
) != 0
6025 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
6027 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
6031 s
= ppc64_elf_tdata (gent
->owner
)->got
;
6032 gent
->got
.offset
= s
->size
;
6034 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
6035 dyn
= htab
->elf
.dynamic_sections_created
;
6037 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
6038 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6039 || h
->root
.type
!= bfd_link_hash_undefweak
))
6040 ppc64_elf_tdata (gent
->owner
)->relgot
->size
6041 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
6042 ? 2 * sizeof (Elf64_External_Rela
)
6043 : sizeof (Elf64_External_Rela
));
6046 gent
->got
.offset
= (bfd_vma
) -1;
6048 if (eh
->dyn_relocs
== NULL
)
6051 /* In the shared -Bsymbolic case, discard space allocated for
6052 dynamic pc-relative relocs against symbols which turn out to be
6053 defined in regular objects. For the normal shared case, discard
6054 space for relocs that have become local due to symbol visibility
6059 /* Relocs that use pc_count are those that appear on a call insn,
6060 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6061 generated via assembly. We want calls to protected symbols to
6062 resolve directly to the function rather than going via the plt.
6063 If people want function pointer comparisons to work as expected
6064 then they should avoid writing weird assembly. */
6065 if (SYMBOL_CALLS_LOCAL (info
, h
))
6067 struct ppc_dyn_relocs
**pp
;
6069 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6071 p
->count
-= p
->pc_count
;
6080 /* Also discard relocs on undefined weak syms with non-default
6082 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6083 && h
->root
.type
== bfd_link_hash_undefweak
)
6084 eh
->dyn_relocs
= NULL
;
6086 else if (ELIMINATE_COPY_RELOCS
)
6088 /* For the non-shared case, discard space for relocs against
6089 symbols which turn out to need copy relocs or are not
6092 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
6093 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
6094 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
6096 /* Make sure this symbol is output as a dynamic symbol.
6097 Undefined weak syms won't yet be marked as dynamic. */
6098 if (h
->dynindx
== -1
6099 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
6101 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6105 /* If that succeeded, we know we'll be keeping all the
6107 if (h
->dynindx
!= -1)
6111 eh
->dyn_relocs
= NULL
;
6116 /* Finally, allocate space. */
6117 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6119 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6120 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6126 /* Find any dynamic relocs that apply to read-only sections. */
6129 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
6131 struct ppc_link_hash_entry
*eh
;
6132 struct ppc_dyn_relocs
*p
;
6134 if (h
->root
.type
== bfd_link_hash_warning
)
6135 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6137 eh
= (struct ppc_link_hash_entry
*) h
;
6138 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6140 asection
*s
= p
->sec
->output_section
;
6142 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6144 struct bfd_link_info
*info
= inf
;
6146 info
->flags
|= DF_TEXTREL
;
6148 /* Not an error, just cut short the traversal. */
6155 /* Set the sizes of the dynamic sections. */
6158 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6159 struct bfd_link_info
*info
)
6161 struct ppc_link_hash_table
*htab
;
6167 htab
= ppc_hash_table (info
);
6168 dynobj
= htab
->elf
.dynobj
;
6172 if (htab
->elf
.dynamic_sections_created
)
6174 /* Set the contents of the .interp section to the interpreter. */
6175 if (info
->executable
)
6177 s
= bfd_get_section_by_name (dynobj
, ".interp");
6180 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6181 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6185 /* Set up .got offsets for local syms, and space for local dynamic
6187 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6189 struct got_entry
**lgot_ents
;
6190 struct got_entry
**end_lgot_ents
;
6192 bfd_size_type locsymcount
;
6193 Elf_Internal_Shdr
*symtab_hdr
;
6196 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
6199 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
6201 s
= ppc64_elf_tdata (ibfd
)->got
;
6202 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6206 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6207 srel
->size
+= sizeof (Elf64_External_Rela
);
6211 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
6213 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6215 struct ppc_dyn_relocs
*p
;
6217 for (p
= *((struct ppc_dyn_relocs
**)
6218 &elf_section_data (s
)->local_dynrel
);
6222 if (!bfd_is_abs_section (p
->sec
)
6223 && bfd_is_abs_section (p
->sec
->output_section
))
6225 /* Input section has been discarded, either because
6226 it is a copy of a linkonce section or due to
6227 linker script /DISCARD/, so we'll be discarding
6230 else if (p
->count
!= 0)
6232 srel
= elf_section_data (p
->sec
)->sreloc
;
6233 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
6234 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
6235 info
->flags
|= DF_TEXTREL
;
6240 lgot_ents
= elf_local_got_ents (ibfd
);
6244 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6245 locsymcount
= symtab_hdr
->sh_info
;
6246 end_lgot_ents
= lgot_ents
+ locsymcount
;
6247 lgot_masks
= (char *) end_lgot_ents
;
6248 s
= ppc64_elf_tdata (ibfd
)->got
;
6249 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
6250 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
6252 struct got_entry
*ent
;
6254 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
6255 if (ent
->got
.refcount
> 0)
6257 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
6259 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
6261 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
6264 srel
->size
+= sizeof (Elf64_External_Rela
);
6266 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
6270 ent
->got
.offset
= s
->size
;
6271 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
6275 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
6281 srel
->size
+= sizeof (Elf64_External_Rela
);
6286 ent
->got
.offset
= (bfd_vma
) -1;
6290 /* Allocate global sym .plt and .got entries, and space for global
6291 sym dynamic relocs. */
6292 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
6294 /* We now have determined the sizes of the various dynamic sections.
6295 Allocate memory for them. */
6297 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6299 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6302 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
6303 /* These haven't been allocated yet; don't strip. */
6305 else if (s
== htab
->got
6307 || s
== htab
->glink
)
6309 /* Strip this section if we don't need it; see the
6312 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
6316 /* If we don't need this section, strip it from the
6317 output file. This is mostly to handle .rela.bss and
6318 .rela.plt. We must create both sections in
6319 create_dynamic_sections, because they must be created
6320 before the linker maps input sections to output
6321 sections. The linker does that before
6322 adjust_dynamic_symbol is called, and it is that
6323 function which decides whether anything needs to go
6324 into these sections. */
6328 if (s
!= htab
->relplt
)
6331 /* We use the reloc_count field as a counter if we need
6332 to copy relocs into the output file. */
6338 /* It's not one of our sections, so don't allocate space. */
6344 _bfd_strip_section_from_output (info
, s
);
6348 /* .plt is in the bss section. We don't initialise it. */
6352 /* Allocate memory for the section contents. We use bfd_zalloc
6353 here in case unused entries are not reclaimed before the
6354 section's contents are written out. This should not happen,
6355 but this way if it does we get a R_PPC64_NONE reloc in .rela
6356 sections instead of garbage.
6357 We also rely on the section contents being zero when writing
6359 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
6360 if (s
->contents
== NULL
)
6364 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6366 s
= ppc64_elf_tdata (ibfd
)->got
;
6367 if (s
!= NULL
&& s
!= htab
->got
)
6370 _bfd_strip_section_from_output (info
, s
);
6373 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
6374 if (s
->contents
== NULL
)
6378 s
= ppc64_elf_tdata (ibfd
)->relgot
;
6382 _bfd_strip_section_from_output (info
, s
);
6385 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
6386 if (s
->contents
== NULL
)
6394 if (htab
->elf
.dynamic_sections_created
)
6396 /* Add some entries to the .dynamic section. We fill in the
6397 values later, in ppc64_elf_finish_dynamic_sections, but we
6398 must add the entries now so that we get the correct size for
6399 the .dynamic section. The DT_DEBUG entry is filled in by the
6400 dynamic linker and used by the debugger. */
6401 #define add_dynamic_entry(TAG, VAL) \
6402 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6404 if (info
->executable
)
6406 if (!add_dynamic_entry (DT_DEBUG
, 0))
6410 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6412 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6413 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6414 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6415 || !add_dynamic_entry (DT_JMPREL
, 0)
6416 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
6422 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
6423 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
6429 if (!add_dynamic_entry (DT_RELA
, 0)
6430 || !add_dynamic_entry (DT_RELASZ
, 0)
6431 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
6434 /* If any dynamic relocs apply to a read-only section,
6435 then we need a DT_TEXTREL entry. */
6436 if ((info
->flags
& DF_TEXTREL
) == 0)
6437 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
6439 if ((info
->flags
& DF_TEXTREL
) != 0)
6441 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6446 #undef add_dynamic_entry
6451 /* Determine the type of stub needed, if any, for a call. */
6453 static inline enum ppc_stub_type
6454 ppc_type_of_stub (asection
*input_sec
,
6455 const Elf_Internal_Rela
*rel
,
6456 struct ppc_link_hash_entry
**hash
,
6457 bfd_vma destination
)
6459 struct ppc_link_hash_entry
*h
= *hash
;
6461 bfd_vma branch_offset
;
6462 bfd_vma max_branch_offset
;
6463 enum elf_ppc64_reloc_type r_type
;
6468 && h
->oh
->is_func_descriptor
)
6471 if (h
->elf
.dynindx
!= -1)
6473 struct plt_entry
*ent
;
6475 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6476 if (ent
->addend
== rel
->r_addend
6477 && ent
->plt
.offset
!= (bfd_vma
) -1)
6480 return ppc_stub_plt_call
;
6484 if (!(h
->elf
.root
.type
== bfd_link_hash_defined
6485 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
6486 || h
->elf
.root
.u
.def
.section
->output_section
== NULL
)
6487 return ppc_stub_none
;
6490 /* Determine where the call point is. */
6491 location
= (input_sec
->output_offset
6492 + input_sec
->output_section
->vma
6495 branch_offset
= destination
- location
;
6496 r_type
= ELF64_R_TYPE (rel
->r_info
);
6498 /* Determine if a long branch stub is needed. */
6499 max_branch_offset
= 1 << 25;
6500 if (r_type
!= R_PPC64_REL24
)
6501 max_branch_offset
= 1 << 15;
6503 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
6504 /* We need a stub. Figure out whether a long_branch or plt_branch
6506 return ppc_stub_long_branch
;
6508 return ppc_stub_none
;
6511 /* Build a .plt call stub. */
6513 static inline bfd_byte
*
6514 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
6516 #define PPC_LO(v) ((v) & 0xffff)
6517 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6518 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6520 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
6521 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
6522 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
6523 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
6524 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
6526 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
6527 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
6528 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
6530 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
6531 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
6532 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
6537 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
6539 struct ppc_stub_hash_entry
*stub_entry
;
6540 struct ppc_branch_hash_entry
*br_entry
;
6541 struct bfd_link_info
*info
;
6542 struct ppc_link_hash_table
*htab
;
6546 struct plt_entry
*ent
;
6550 /* Massage our args to the form they really have. */
6551 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
6554 htab
= ppc_hash_table (info
);
6556 /* Make a note of the offset within the stubs for this entry. */
6557 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
6558 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
6560 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
6561 switch (stub_entry
->stub_type
)
6563 case ppc_stub_long_branch
:
6564 case ppc_stub_long_branch_r2off
:
6565 /* Branches are relative. This is where we are going to. */
6566 off
= (stub_entry
->target_value
6567 + stub_entry
->target_section
->output_offset
6568 + stub_entry
->target_section
->output_section
->vma
);
6570 /* And this is where we are coming from. */
6571 off
-= (stub_entry
->stub_offset
6572 + stub_entry
->stub_sec
->output_offset
6573 + stub_entry
->stub_sec
->output_section
->vma
);
6575 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
6581 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6582 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6583 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
6585 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6587 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6592 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
6594 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
6597 case ppc_stub_plt_branch
:
6598 case ppc_stub_plt_branch_r2off
:
6599 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6600 stub_entry
->root
.string
+ 9,
6602 if (br_entry
== NULL
)
6604 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
6605 stub_entry
->root
.string
+ 9);
6606 htab
->stub_error
= TRUE
;
6610 off
= (stub_entry
->target_value
6611 + stub_entry
->target_section
->output_offset
6612 + stub_entry
->target_section
->output_section
->vma
);
6614 bfd_put_64 (htab
->brlt
->owner
, off
,
6615 htab
->brlt
->contents
+ br_entry
->offset
);
6619 /* Create a reloc for the branch lookup table entry. */
6620 Elf_Internal_Rela rela
;
6623 rela
.r_offset
= (br_entry
->offset
6624 + htab
->brlt
->output_offset
6625 + htab
->brlt
->output_section
->vma
);
6626 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
6627 rela
.r_addend
= off
;
6629 rl
= htab
->relbrlt
->contents
;
6630 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
6631 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
6634 off
= (br_entry
->offset
6635 + htab
->brlt
->output_offset
6636 + htab
->brlt
->output_section
->vma
6637 - elf_gp (htab
->brlt
->output_section
->owner
)
6638 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6640 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6642 (*_bfd_error_handler
)
6643 (_("linkage table error against `%s'"),
6644 stub_entry
->root
.string
);
6645 bfd_set_error (bfd_error_bad_value
);
6646 htab
->stub_error
= TRUE
;
6651 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
6653 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6655 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6662 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6663 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6664 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
6666 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6668 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6670 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6672 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6676 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
6678 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
6681 case ppc_stub_plt_call
:
6682 /* Do the best we can for shared libraries built without
6683 exporting ".foo" for each "foo". This can happen when symbol
6684 versioning scripts strip all bar a subset of symbols. */
6685 if (stub_entry
->h
->oh
!= NULL
6686 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
6687 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6689 /* Point the symbol at the stub. There may be multiple stubs,
6690 we don't really care; The main thing is to make this sym
6691 defined somewhere. Maybe defining the symbol in the stub
6692 section is a silly idea. If we didn't do this, htab->top_id
6694 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
6695 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
6696 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
6699 /* Now build the stub. */
6701 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6702 if (ent
->addend
== stub_entry
->addend
)
6704 off
= ent
->plt
.offset
;
6707 if (off
>= (bfd_vma
) -2)
6710 off
&= ~ (bfd_vma
) 1;
6711 off
+= (htab
->plt
->output_offset
6712 + htab
->plt
->output_section
->vma
6713 - elf_gp (htab
->plt
->output_section
->owner
)
6714 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6716 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6718 (*_bfd_error_handler
)
6719 (_("linkage table error against `%s'"),
6720 stub_entry
->h
->elf
.root
.root
.string
);
6721 bfd_set_error (bfd_error_bad_value
);
6722 htab
->stub_error
= TRUE
;
6726 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
6735 stub_entry
->stub_sec
->size
+= size
;
6737 if (htab
->emit_stub_syms
6738 && !(stub_entry
->stub_type
== ppc_stub_plt_call
6739 && stub_entry
->h
->oh
!= NULL
6740 && stub_entry
->h
->oh
->elf
.root
.type
== bfd_link_hash_defined
6741 && stub_entry
->h
->oh
->elf
.root
.u
.def
.section
== stub_entry
->stub_sec
6742 && stub_entry
->h
->oh
->elf
.root
.u
.def
.value
== stub_entry
->stub_offset
))
6744 struct elf_link_hash_entry
*h
;
6745 h
= elf_link_hash_lookup (&htab
->elf
, stub_entry
->root
.string
,
6746 TRUE
, FALSE
, FALSE
);
6749 if (h
->root
.type
== bfd_link_hash_new
)
6751 h
->root
.type
= bfd_link_hash_defined
;
6752 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
6753 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
6754 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
6755 | ELF_LINK_HASH_DEF_REGULAR
6756 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6757 | ELF_LINK_FORCED_LOCAL
);
6764 /* As above, but don't actually build the stub. Just bump offset so
6765 we know stub section sizes, and select plt_branch stubs where
6766 long_branch stubs won't do. */
6769 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
6771 struct ppc_stub_hash_entry
*stub_entry
;
6772 struct bfd_link_info
*info
;
6773 struct ppc_link_hash_table
*htab
;
6777 /* Massage our args to the form they really have. */
6778 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
6781 htab
= ppc_hash_table (info
);
6783 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
6785 struct plt_entry
*ent
;
6787 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6788 if (ent
->addend
== stub_entry
->addend
)
6790 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
6793 if (off
>= (bfd_vma
) -2)
6795 off
+= (htab
->plt
->output_offset
6796 + htab
->plt
->output_section
->vma
6797 - elf_gp (htab
->plt
->output_section
->owner
)
6798 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6800 size
= PLT_CALL_STUB_SIZE
;
6801 if (PPC_HA (off
+ 16) != PPC_HA (off
))
6806 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6808 off
= (stub_entry
->target_value
6809 + stub_entry
->target_section
->output_offset
6810 + stub_entry
->target_section
->output_section
->vma
);
6811 off
-= (stub_entry
->stub_sec
->size
6812 + stub_entry
->stub_sec
->output_offset
6813 + stub_entry
->stub_sec
->output_section
->vma
);
6815 /* Reset the stub type from the plt variant in case we now
6816 can reach with a shorter stub. */
6817 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
6818 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
6821 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
6827 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6828 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
6830 struct ppc_branch_hash_entry
*br_entry
;
6832 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6833 stub_entry
->root
.string
+ 9,
6835 if (br_entry
== NULL
)
6837 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
6838 stub_entry
->root
.string
+ 9);
6839 htab
->stub_error
= TRUE
;
6843 if (br_entry
->iter
!= htab
->stub_iteration
)
6845 br_entry
->iter
= htab
->stub_iteration
;
6846 br_entry
->offset
= htab
->brlt
->size
;
6847 htab
->brlt
->size
+= 8;
6850 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
6853 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
6855 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
6860 stub_entry
->stub_sec
->size
+= size
;
6864 /* Set up various things so that we can make a list of input sections
6865 for each output section included in the link. Returns -1 on error,
6866 0 when no stubs will be needed, and 1 on success. */
6869 ppc64_elf_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
6872 int top_id
, top_index
, id
;
6874 asection
**input_list
;
6876 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6878 if (htab
->brlt
== NULL
)
6881 /* Find the top input section id. */
6882 for (input_bfd
= info
->input_bfds
, top_id
= 3;
6884 input_bfd
= input_bfd
->link_next
)
6886 for (section
= input_bfd
->sections
;
6888 section
= section
->next
)
6890 if (top_id
< section
->id
)
6891 top_id
= section
->id
;
6895 htab
->top_id
= top_id
;
6896 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
6897 htab
->stub_group
= bfd_zmalloc (amt
);
6898 if (htab
->stub_group
== NULL
)
6901 /* Set toc_off for com, und, abs and ind sections. */
6902 for (id
= 0; id
< 3; id
++)
6903 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
6905 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
6907 /* We can't use output_bfd->section_count here to find the top output
6908 section index as some sections may have been removed, and
6909 _bfd_strip_section_from_output doesn't renumber the indices. */
6910 for (section
= output_bfd
->sections
, top_index
= 0;
6912 section
= section
->next
)
6914 if (top_index
< section
->index
)
6915 top_index
= section
->index
;
6918 htab
->top_index
= top_index
;
6919 amt
= sizeof (asection
*) * (top_index
+ 1);
6920 input_list
= bfd_zmalloc (amt
);
6921 htab
->input_list
= input_list
;
6922 if (input_list
== NULL
)
6928 /* The linker repeatedly calls this function for each TOC input section
6929 and linker generated GOT section. Group input bfds such that the toc
6930 within a group is less than 64k in size. Will break with cute linker
6931 scripts that play games with dot in the output toc section. */
6934 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
6936 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6937 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
6938 bfd_vma off
= addr
- htab
->toc_curr
;
6940 if (off
+ isec
->size
> 0x10000)
6941 htab
->toc_curr
= addr
;
6943 elf_gp (isec
->owner
) = (htab
->toc_curr
6944 - elf_gp (isec
->output_section
->owner
)
6948 /* Called after the last call to the above function. */
6951 ppc64_elf_reinit_toc (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6952 struct bfd_link_info
*info
)
6954 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6956 /* toc_curr tracks the TOC offset used for code sections below in
6957 ppc64_elf_next_input_section. Start off at 0x8000. */
6958 htab
->toc_curr
= TOC_BASE_OFF
;
6961 /* No toc references were found in ISEC. If the code in ISEC makes no
6962 calls, then there's no need to use toc adjusting stubs when branching
6963 into ISEC. Actually, indirect calls from ISEC are OK as they will
6967 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
6974 /* We know none of our code bearing sections will need toc stubs. */
6975 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
6978 if (isec
->size
== 0)
6981 /* Hack for linux kernel. .fixup contains branches, but only back to
6982 the function that hit an exception. */
6983 branch_ok
= strcmp (isec
->name
, ".fixup") == 0;
6985 contents
= elf_section_data (isec
)->this_hdr
.contents
;
6986 if (contents
== NULL
)
6988 if (!bfd_malloc_and_get_section (isec
->owner
, isec
, &contents
))
6990 if (contents
!= NULL
)
6994 if (info
->keep_memory
)
6995 elf_section_data (isec
)->this_hdr
.contents
= contents
;
6998 /* Code scan, because we don't necessarily have relocs on calls to
6999 static functions. */
7001 for (i
= 0; i
< isec
->size
; i
+= 4)
7003 unsigned long insn
= bfd_get_32 (isec
->owner
, contents
+ i
);
7004 /* Is this a branch? */
7005 if ((insn
& (0x3f << 26)) == (18 << 26)
7006 /* If branch and link, it's a function call. */
7008 /* Sibling calls use a plain branch. I don't know a way
7009 of deciding whether a branch is really a sibling call. */
7017 if (elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7022 /* The linker repeatedly calls this function for each input section,
7023 in the order that input sections are linked into output sections.
7024 Build lists of input sections to determine groupings between which
7025 we may insert linker stubs. */
7028 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
7030 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7033 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
7034 && isec
->output_section
->index
<= htab
->top_index
)
7036 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
7037 /* Steal the link_sec pointer for our list. */
7038 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7039 /* This happens to make the list in reverse order,
7040 which is what we want. */
7041 PREV_SEC (isec
) = *list
;
7045 /* If a code section has a function that uses the TOC then we need
7046 to use the right TOC (obviously). Also, make sure that .opd gets
7047 the correct TOC value for R_PPC64_TOC relocs that don't have or
7048 can't find their function symbol (shouldn't ever happen now). */
7049 if (isec
->has_gp_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
7051 if (elf_gp (isec
->owner
) != 0)
7052 htab
->toc_curr
= elf_gp (isec
->owner
);
7054 else if ((ret
= toc_adjusting_stub_needed (info
, isec
)) < 0)
7057 isec
->has_gp_reloc
= ret
;
7059 /* Functions that don't use the TOC can belong in any TOC group.
7060 Use the last TOC base. This happens to make _init and _fini
7062 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
7066 /* See whether we can group stub sections together. Grouping stub
7067 sections may result in fewer stubs. More importantly, we need to
7068 put all .init* and .fini* stubs at the beginning of the .init or
7069 .fini output sections respectively, because glibc splits the
7070 _init and _fini functions into multiple parts. Putting a stub in
7071 the middle of a function is not a good idea. */
7074 group_sections (struct ppc_link_hash_table
*htab
,
7075 bfd_size_type stub_group_size
,
7076 bfd_boolean stubs_always_before_branch
)
7078 asection
**list
= htab
->input_list
+ htab
->top_index
;
7081 asection
*tail
= *list
;
7082 while (tail
!= NULL
)
7086 bfd_size_type total
;
7087 bfd_boolean big_sec
;
7092 big_sec
= total
>= stub_group_size
;
7093 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
7095 while ((prev
= PREV_SEC (curr
)) != NULL
7096 && ((total
+= curr
->output_offset
- prev
->output_offset
)
7098 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7101 /* OK, the size from the start of CURR to the end is less
7102 than stub_group_size and thus can be handled by one stub
7103 section. (or the tail section is itself larger than
7104 stub_group_size, in which case we may be toast.) We
7105 should really be keeping track of the total size of stubs
7106 added here, as stubs contribute to the final output
7107 section size. That's a little tricky, and this way will
7108 only break if stubs added make the total size more than
7109 2^25, ie. for the default stub_group_size, if stubs total
7110 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7113 prev
= PREV_SEC (tail
);
7114 /* Set up this stub group. */
7115 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7117 while (tail
!= curr
&& (tail
= prev
) != NULL
);
7119 /* But wait, there's more! Input sections up to stub_group_size
7120 bytes before the stub section can be handled by it too.
7121 Don't do this if we have a really large section after the
7122 stubs, as adding more stubs increases the chance that
7123 branches may not reach into the stub section. */
7124 if (!stubs_always_before_branch
&& !big_sec
)
7128 && ((total
+= tail
->output_offset
- prev
->output_offset
)
7130 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
7133 prev
= PREV_SEC (tail
);
7134 htab
->stub_group
[tail
->id
].link_sec
= curr
;
7140 while (list
-- != htab
->input_list
);
7141 free (htab
->input_list
);
7145 /* Determine and set the size of the stub section for a final link.
7147 The basic idea here is to examine all the relocations looking for
7148 PC-relative calls to a target that is unreachable with a "bl"
7152 ppc64_elf_size_stubs (bfd
*output_bfd
,
7153 struct bfd_link_info
*info
,
7154 bfd_signed_vma group_size
,
7155 asection
*(*add_stub_section
) (const char *, asection
*),
7156 void (*layout_sections_again
) (void))
7158 bfd_size_type stub_group_size
;
7159 bfd_boolean stubs_always_before_branch
;
7160 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7162 /* Stash our params away. */
7163 htab
->add_stub_section
= add_stub_section
;
7164 htab
->layout_sections_again
= layout_sections_again
;
7165 stubs_always_before_branch
= group_size
< 0;
7167 stub_group_size
= -group_size
;
7169 stub_group_size
= group_size
;
7170 if (stub_group_size
== 1)
7172 /* Default values. */
7173 if (stubs_always_before_branch
)
7175 stub_group_size
= 0x1e00000;
7176 if (htab
->has_14bit_branch
)
7177 stub_group_size
= 0x7800;
7181 stub_group_size
= 0x1c00000;
7182 if (htab
->has_14bit_branch
)
7183 stub_group_size
= 0x7000;
7187 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
7192 unsigned int bfd_indx
;
7194 bfd_boolean stub_changed
;
7196 htab
->stub_iteration
+= 1;
7197 stub_changed
= FALSE
;
7199 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
7201 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
7203 Elf_Internal_Shdr
*symtab_hdr
;
7205 Elf_Internal_Sym
*local_syms
= NULL
;
7207 /* We'll need the symbol table in a second. */
7208 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
7209 if (symtab_hdr
->sh_info
== 0)
7212 /* Walk over each section attached to the input bfd. */
7213 for (section
= input_bfd
->sections
;
7215 section
= section
->next
)
7217 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
7219 /* If there aren't any relocs, then there's nothing more
7221 if ((section
->flags
& SEC_RELOC
) == 0
7222 || section
->reloc_count
== 0)
7225 /* If this section is a link-once section that will be
7226 discarded, then don't create any stubs. */
7227 if (section
->output_section
== NULL
7228 || section
->output_section
->owner
!= output_bfd
)
7231 /* Get the relocs. */
7233 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
7235 if (internal_relocs
== NULL
)
7236 goto error_ret_free_local
;
7238 /* Now examine each relocation. */
7239 irela
= internal_relocs
;
7240 irelaend
= irela
+ section
->reloc_count
;
7241 for (; irela
< irelaend
; irela
++)
7243 enum elf_ppc64_reloc_type r_type
;
7244 unsigned int r_indx
;
7245 enum ppc_stub_type stub_type
;
7246 struct ppc_stub_hash_entry
*stub_entry
;
7247 asection
*sym_sec
, *code_sec
;
7249 bfd_vma destination
;
7250 bfd_boolean ok_dest
;
7251 struct ppc_link_hash_entry
*hash
;
7252 struct ppc_link_hash_entry
*fdh
;
7253 struct elf_link_hash_entry
*h
;
7254 Elf_Internal_Sym
*sym
;
7256 const asection
*id_sec
;
7259 r_type
= ELF64_R_TYPE (irela
->r_info
);
7260 r_indx
= ELF64_R_SYM (irela
->r_info
);
7262 if (r_type
>= R_PPC64_max
)
7264 bfd_set_error (bfd_error_bad_value
);
7265 goto error_ret_free_internal
;
7268 /* Only look for stubs on branch instructions. */
7269 if (r_type
!= R_PPC64_REL24
7270 && r_type
!= R_PPC64_REL14
7271 && r_type
!= R_PPC64_REL14_BRTAKEN
7272 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
7275 /* Now determine the call target, its name, value,
7277 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7279 goto error_ret_free_internal
;
7280 hash
= (struct ppc_link_hash_entry
*) h
;
7286 sym_value
= sym
->st_value
;
7292 /* Recognise an old ABI func code entry sym, and
7293 use the func descriptor sym instead. */
7294 if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
7295 && hash
->elf
.root
.root
.string
[0] == '.'
7296 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
7298 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
7299 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7301 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
7302 sym_value
= fdh
->elf
.root
.u
.def
.value
;
7303 if (sym_sec
->output_section
!= NULL
)
7309 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
7310 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
7312 sym_value
= hash
->elf
.root
.u
.def
.value
;
7313 if (sym_sec
->output_section
!= NULL
)
7316 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
7318 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
7322 bfd_set_error (bfd_error_bad_value
);
7323 goto error_ret_free_internal
;
7330 sym_value
+= irela
->r_addend
;
7331 destination
= (sym_value
7332 + sym_sec
->output_offset
7333 + sym_sec
->output_section
->vma
);
7337 opd_adjust
= get_opd_info (sym_sec
);
7338 if (opd_adjust
!= NULL
)
7344 long adjust
= opd_adjust
[sym_value
/ 24];
7347 sym_value
+= adjust
;
7349 dest
= opd_entry_value (sym_sec
, sym_value
,
7350 &code_sec
, &sym_value
);
7351 if (dest
!= (bfd_vma
) -1)
7356 /* Fixup old ABI sym to point at code
7358 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
7359 hash
->elf
.root
.u
.def
.section
= code_sec
;
7360 hash
->elf
.root
.u
.def
.value
= sym_value
;
7365 /* Determine what (if any) linker stub is needed. */
7366 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
7369 if (stub_type
!= ppc_stub_plt_call
)
7371 /* Check whether we need a TOC adjusting stub.
7372 Since the linker pastes together pieces from
7373 different object files when creating the
7374 _init and _fini functions, it may be that a
7375 call to what looks like a local sym is in
7376 fact a call needing a TOC adjustment. */
7377 if (code_sec
!= NULL
7378 && code_sec
->output_section
!= NULL
7379 && (htab
->stub_group
[code_sec
->id
].toc_off
7380 != htab
->stub_group
[section
->id
].toc_off
)
7381 && code_sec
->has_gp_reloc
7382 && section
->has_gp_reloc
)
7383 stub_type
= ppc_stub_long_branch_r2off
;
7386 if (stub_type
== ppc_stub_none
)
7389 /* __tls_get_addr calls might be eliminated. */
7390 if (stub_type
!= ppc_stub_plt_call
7392 && (hash
== htab
->tls_get_addr
7393 || hash
== htab
->tls_get_addr_fd
)
7394 && section
->has_tls_reloc
7395 && irela
!= internal_relocs
)
7400 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
7401 irela
- 1, input_bfd
))
7402 goto error_ret_free_internal
;
7407 /* Support for grouping stub sections. */
7408 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
7410 /* Get the name of this stub. */
7411 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
7413 goto error_ret_free_internal
;
7415 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
7416 stub_name
, FALSE
, FALSE
);
7417 if (stub_entry
!= NULL
)
7419 /* The proper stub has already been created. */
7424 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
7425 if (stub_entry
== NULL
)
7428 error_ret_free_internal
:
7429 if (elf_section_data (section
)->relocs
== NULL
)
7430 free (internal_relocs
);
7431 error_ret_free_local
:
7432 if (local_syms
!= NULL
7433 && (symtab_hdr
->contents
7434 != (unsigned char *) local_syms
))
7439 stub_entry
->stub_type
= stub_type
;
7440 stub_entry
->target_value
= sym_value
;
7441 stub_entry
->target_section
= code_sec
;
7442 stub_entry
->h
= hash
;
7443 stub_entry
->addend
= irela
->r_addend
;
7444 stub_changed
= TRUE
;
7447 /* We're done with the internal relocs, free them. */
7448 if (elf_section_data (section
)->relocs
!= internal_relocs
)
7449 free (internal_relocs
);
7452 if (local_syms
!= NULL
7453 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7455 if (!info
->keep_memory
)
7458 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7465 /* OK, we've added some stubs. Find out the new size of the
7467 for (stub_sec
= htab
->stub_bfd
->sections
;
7469 stub_sec
= stub_sec
->next
)
7470 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
7473 htab
->brlt
->size
= 0;
7475 htab
->relbrlt
->size
= 0;
7477 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
7479 /* Ask the linker to do its stuff. */
7480 (*htab
->layout_sections_again
) ();
7483 /* It would be nice to strip .branch_lt from the output if the
7484 section is empty, but it's too late. If we strip sections here,
7485 the dynamic symbol table is corrupted since the section symbol
7486 for the stripped section isn't written. */
7491 /* Called after we have determined section placement. If sections
7492 move, we'll be called again. Provide a value for TOCstart. */
7495 ppc64_elf_toc (bfd
*obfd
)
7500 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7501 order. The TOC starts where the first of these sections starts. */
7502 s
= bfd_get_section_by_name (obfd
, ".got");
7504 s
= bfd_get_section_by_name (obfd
, ".toc");
7506 s
= bfd_get_section_by_name (obfd
, ".tocbss");
7508 s
= bfd_get_section_by_name (obfd
, ".plt");
7511 /* This may happen for
7512 o references to TOC base (SYM@toc / TOC[tc0]) without a
7515 o --gc-sections and empty TOC sections
7517 FIXME: Warn user? */
7519 /* Look for a likely section. We probably won't even be
7521 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7522 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
7523 == (SEC_ALLOC
| SEC_SMALL_DATA
))
7526 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7527 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
7528 == (SEC_ALLOC
| SEC_SMALL_DATA
))
7531 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7532 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
7535 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7536 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
7542 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
7547 /* Build all the stubs associated with the current output file.
7548 The stubs are kept in a hash table attached to the main linker
7549 hash table. This function is called via gldelf64ppc_finish. */
7552 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
7553 struct bfd_link_info
*info
,
7556 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7559 int stub_sec_count
= 0;
7561 htab
->emit_stub_syms
= emit_stub_syms
;
7563 /* Allocate memory to hold the linker stubs. */
7564 for (stub_sec
= htab
->stub_bfd
->sections
;
7566 stub_sec
= stub_sec
->next
)
7567 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
7568 && stub_sec
->size
!= 0)
7570 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
7571 if (stub_sec
->contents
== NULL
)
7573 /* We want to check that built size is the same as calculated
7574 size. rawsize is a convenient location to use. */
7575 stub_sec
->rawsize
= stub_sec
->size
;
7579 if (htab
->plt
!= NULL
)
7584 /* Build the .glink plt call stub. */
7585 plt0
= (htab
->plt
->output_section
->vma
7586 + htab
->plt
->output_offset
7587 - (htab
->glink
->output_section
->vma
7588 + htab
->glink
->output_offset
7589 + GLINK_CALL_STUB_SIZE
));
7590 if (plt0
+ 0x80008000 > 0xffffffff)
7592 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
7593 bfd_set_error (bfd_error_bad_value
);
7597 if (htab
->emit_stub_syms
)
7599 struct elf_link_hash_entry
*h
;
7600 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
7603 if (h
->root
.type
== bfd_link_hash_new
)
7605 h
->root
.type
= bfd_link_hash_defined
;
7606 h
->root
.u
.def
.section
= htab
->glink
;
7607 h
->root
.u
.def
.value
= 0;
7608 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
7609 | ELF_LINK_HASH_DEF_REGULAR
7610 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7611 | ELF_LINK_FORCED_LOCAL
);
7614 p
= htab
->glink
->contents
;
7615 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
7617 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
7619 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
7621 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
7623 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
7625 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
7627 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
7629 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
7631 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
7633 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
7635 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
7637 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
7639 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
7641 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
7643 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
7645 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
7648 /* Build the .glink lazy link call stubs. */
7650 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
7654 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
7659 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
7661 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
7664 bfd_put_32 (htab
->glink
->owner
,
7665 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
7669 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
7672 if (htab
->brlt
->size
!= 0)
7674 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
7676 if (htab
->brlt
->contents
== NULL
)
7679 if (info
->shared
&& htab
->relbrlt
->size
!= 0)
7681 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
7682 htab
->relbrlt
->size
);
7683 if (htab
->relbrlt
->contents
== NULL
)
7687 /* Build the stubs as directed by the stub hash table. */
7688 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
7690 for (stub_sec
= htab
->stub_bfd
->sections
;
7692 stub_sec
= stub_sec
->next
)
7693 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
7695 stub_sec_count
+= 1;
7696 if (stub_sec
->rawsize
!= stub_sec
->size
)
7700 if (stub_sec
!= NULL
7701 || htab
->glink
->rawsize
!= htab
->glink
->size
)
7703 htab
->stub_error
= TRUE
;
7704 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
7707 if (htab
->stub_error
)
7712 *stats
= bfd_malloc (500);
7716 sprintf (*stats
, _("linker stubs in %u groups\n"
7719 " long branch %lu\n"
7720 " long toc adj %lu\n"
7723 htab
->stub_count
[ppc_stub_long_branch
- 1],
7724 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
7725 htab
->stub_count
[ppc_stub_plt_branch
- 1],
7726 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
7727 htab
->stub_count
[ppc_stub_plt_call
- 1]);
7732 /* This function undoes the changes made by add_symbol_adjust. */
7735 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7737 struct ppc_link_hash_entry
*eh
;
7739 if (h
->root
.type
== bfd_link_hash_indirect
)
7742 if (h
->root
.type
== bfd_link_hash_warning
)
7743 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7745 eh
= (struct ppc_link_hash_entry
*) h
;
7746 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
7749 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
7754 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
7756 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7757 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
7760 /* The RELOCATE_SECTION function is called by the ELF backend linker
7761 to handle the relocations for a section.
7763 The relocs are always passed as Rela structures; if the section
7764 actually uses Rel structures, the r_addend field will always be
7767 This function is responsible for adjust the section contents as
7768 necessary, and (if using Rela relocs and generating a
7769 relocatable output file) adjusting the reloc addend as
7772 This function does not have to worry about setting the reloc
7773 address or the reloc symbol index.
7775 LOCAL_SYMS is a pointer to the swapped in local symbols.
7777 LOCAL_SECTIONS is an array giving the section in the input file
7778 corresponding to the st_shndx field of each local symbol.
7780 The global hash table entry for the global symbols can be found
7781 via elf_sym_hashes (input_bfd).
7783 When generating relocatable output, this function must handle
7784 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7785 going to be the section symbol corresponding to the output
7786 section, which means that the addend must be adjusted
7790 ppc64_elf_relocate_section (bfd
*output_bfd
,
7791 struct bfd_link_info
*info
,
7793 asection
*input_section
,
7795 Elf_Internal_Rela
*relocs
,
7796 Elf_Internal_Sym
*local_syms
,
7797 asection
**local_sections
)
7799 struct ppc_link_hash_table
*htab
;
7800 Elf_Internal_Shdr
*symtab_hdr
;
7801 struct elf_link_hash_entry
**sym_hashes
;
7802 Elf_Internal_Rela
*rel
;
7803 Elf_Internal_Rela
*relend
;
7804 Elf_Internal_Rela outrel
;
7806 struct got_entry
**local_got_ents
;
7808 bfd_boolean ret
= TRUE
;
7810 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7811 bfd_boolean is_power4
= FALSE
;
7813 if (info
->relocatable
)
7816 /* Initialize howto table if needed. */
7817 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
7820 htab
= ppc_hash_table (info
);
7821 local_got_ents
= elf_local_got_ents (input_bfd
);
7822 TOCstart
= elf_gp (output_bfd
);
7823 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
7824 sym_hashes
= elf_sym_hashes (input_bfd
);
7825 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
7828 relend
= relocs
+ input_section
->reloc_count
;
7829 for (; rel
< relend
; rel
++)
7831 enum elf_ppc64_reloc_type r_type
;
7833 bfd_reloc_status_type r
;
7834 Elf_Internal_Sym
*sym
;
7836 struct elf_link_hash_entry
*h
;
7837 struct elf_link_hash_entry
*fdh
;
7838 const char *sym_name
;
7839 unsigned long r_symndx
, toc_symndx
;
7840 char tls_mask
, tls_gd
, tls_type
;
7843 bfd_boolean unresolved_reloc
;
7845 unsigned long insn
, mask
;
7846 struct ppc_stub_hash_entry
*stub_entry
;
7847 bfd_vma max_br_offset
;
7850 r_type
= ELF64_R_TYPE (rel
->r_info
);
7851 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7853 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7854 symbol of the previous ADDR64 reloc. The symbol gives us the
7855 proper TOC base to use. */
7856 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
7858 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
7860 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
7866 unresolved_reloc
= FALSE
;
7869 if (r_symndx
< symtab_hdr
->sh_info
)
7871 /* It's a local symbol. */
7874 sym
= local_syms
+ r_symndx
;
7875 sec
= local_sections
[r_symndx
];
7876 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
7877 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
7878 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7879 opd_adjust
= get_opd_info (sec
);
7880 if (opd_adjust
!= NULL
)
7882 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 24];
7886 relocation
+= adjust
;
7891 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7892 r_symndx
, symtab_hdr
, sym_hashes
,
7894 unresolved_reloc
, warned
);
7895 sym_name
= h
->root
.root
.string
;
7899 /* TLS optimizations. Replace instruction sequences and relocs
7900 based on information we collected in tls_optimize. We edit
7901 RELOCS so that --emit-relocs will output something sensible
7902 for the final instruction stream. */
7906 if (IS_PPC64_TLS_RELOC (r_type
))
7909 tls_mask
= ((struct ppc_link_hash_entry
*) h
)->tls_mask
;
7910 else if (local_got_ents
!= NULL
)
7913 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
7914 tls_mask
= lgot_masks
[r_symndx
];
7916 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
7918 /* Check for toc tls entries. */
7921 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
7926 tls_mask
= *toc_tls
;
7930 /* Check that tls relocs are used with tls syms, and non-tls
7931 relocs are used with non-tls syms. */
7933 && r_type
!= R_PPC64_NONE
7935 || h
->root
.type
== bfd_link_hash_defined
7936 || h
->root
.type
== bfd_link_hash_defweak
)
7937 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
7939 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
7940 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7943 (*_bfd_error_handler
)
7944 (sym_type
== STT_TLS
7945 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7946 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
7949 (long) rel
->r_offset
,
7950 ppc64_elf_howto_table
[r_type
]->name
,
7954 /* Ensure reloc mapping code below stays sane. */
7955 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
7956 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
7957 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
7958 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
7959 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
7960 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
7961 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
7962 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
7963 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
7964 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
7973 case R_PPC64_TOC16_LO
:
7974 case R_PPC64_TOC16_DS
:
7975 case R_PPC64_TOC16_LO_DS
:
7977 /* Check for toc tls entries. */
7981 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
7988 tls_mask
= *toc_tls
;
7989 if (r_type
== R_PPC64_TOC16_DS
7990 || r_type
== R_PPC64_TOC16_LO_DS
)
7993 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
7998 /* If we found a GD reloc pair, then we might be
7999 doing a GD->IE transition. */
8002 tls_gd
= TLS_TPRELGD
;
8003 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8004 goto tls_get_addr_check
;
8006 else if (retval
== 3)
8008 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8009 goto tls_get_addr_check
;
8016 case R_PPC64_GOT_TPREL16_DS
:
8017 case R_PPC64_GOT_TPREL16_LO_DS
:
8019 && (tls_mask
& TLS_TPREL
) == 0)
8022 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
8024 insn
|= 0x3c0d0000; /* addis 0,13,0 */
8025 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
8026 r_type
= R_PPC64_TPREL16_HA
;
8027 if (toc_symndx
!= 0)
8029 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8030 /* We changed the symbol. Start over in order to
8031 get h, sym, sec etc. right. */
8036 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8042 && (tls_mask
& TLS_TPREL
) == 0)
8045 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8046 if ((insn
& ((0x3f << 26) | (31 << 11)))
8047 == ((31 << 26) | (13 << 11)))
8048 rtra
= insn
& ((1 << 26) - (1 << 16));
8049 else if ((insn
& ((0x3f << 26) | (31 << 16)))
8050 == ((31 << 26) | (13 << 16)))
8051 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
8054 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
8057 else if ((insn
& (31 << 1)) == 23 << 1
8058 && ((insn
& (31 << 6)) < 14 << 6
8059 || ((insn
& (31 << 6)) >= 16 << 6
8060 && (insn
& (31 << 6)) < 24 << 6)))
8061 /* load and store indexed -> dform. */
8062 insn
= (32 | ((insn
>> 6) & 31)) << 26;
8063 else if ((insn
& (31 << 1)) == 21 << 1
8064 && (insn
& (0x1a << 6)) == 0)
8065 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8066 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
8067 | ((insn
>> 6) & 1));
8068 else if ((insn
& (31 << 1)) == 21 << 1
8069 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
8071 insn
= (58 << 26) | 2;
8075 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8076 /* Was PPC64_TLS which sits on insn boundary, now
8077 PPC64_TPREL16_LO which is at insn+2. */
8079 r_type
= R_PPC64_TPREL16_LO
;
8080 if (toc_symndx
!= 0)
8082 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
8083 /* We changed the symbol. Start over in order to
8084 get h, sym, sec etc. right. */
8089 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8093 case R_PPC64_GOT_TLSGD16_HI
:
8094 case R_PPC64_GOT_TLSGD16_HA
:
8095 tls_gd
= TLS_TPRELGD
;
8096 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8100 case R_PPC64_GOT_TLSLD16_HI
:
8101 case R_PPC64_GOT_TLSLD16_HA
:
8102 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8105 if ((tls_mask
& tls_gd
) != 0)
8106 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8107 + R_PPC64_GOT_TPREL16_DS
);
8110 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
8112 r_type
= R_PPC64_NONE
;
8114 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8118 case R_PPC64_GOT_TLSGD16
:
8119 case R_PPC64_GOT_TLSGD16_LO
:
8120 tls_gd
= TLS_TPRELGD
;
8121 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
8122 goto tls_get_addr_check
;
8125 case R_PPC64_GOT_TLSLD16
:
8126 case R_PPC64_GOT_TLSLD16_LO
:
8127 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
8130 if (rel
+ 1 < relend
)
8132 enum elf_ppc64_reloc_type r_type2
;
8133 unsigned long r_symndx2
;
8134 struct elf_link_hash_entry
*h2
;
8135 bfd_vma insn1
, insn2
, insn3
;
8138 /* The next instruction should be a call to
8139 __tls_get_addr. Peek at the reloc to be sure. */
8140 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
8141 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
8142 if (r_symndx2
< symtab_hdr
->sh_info
8143 || (r_type2
!= R_PPC64_REL14
8144 && r_type2
!= R_PPC64_REL14_BRTAKEN
8145 && r_type2
!= R_PPC64_REL14_BRNTAKEN
8146 && r_type2
!= R_PPC64_REL24
))
8149 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
8150 while (h2
->root
.type
== bfd_link_hash_indirect
8151 || h2
->root
.type
== bfd_link_hash_warning
)
8152 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
8153 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
8154 && h2
!= &htab
->tls_get_addr_fd
->elf
))
8157 /* OK, it checks out. Replace the call. */
8158 offset
= rel
[1].r_offset
;
8159 insn1
= bfd_get_32 (output_bfd
,
8160 contents
+ rel
->r_offset
- 2);
8161 insn3
= bfd_get_32 (output_bfd
,
8162 contents
+ offset
+ 4);
8163 if ((tls_mask
& tls_gd
) != 0)
8166 insn1
&= (1 << 26) - (1 << 2);
8167 insn1
|= 58 << 26; /* ld */
8168 insn2
= 0x7c636a14; /* add 3,3,13 */
8169 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
8170 if ((tls_mask
& TLS_EXPLICIT
) == 0)
8171 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
8172 + R_PPC64_GOT_TPREL16_DS
);
8174 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
8175 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8180 insn1
= 0x3c6d0000; /* addis 3,13,0 */
8181 insn2
= 0x38630000; /* addi 3,3,0 */
8184 /* Was an LD reloc. */
8186 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8187 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8189 else if (toc_symndx
!= 0)
8190 r_symndx
= toc_symndx
;
8191 r_type
= R_PPC64_TPREL16_HA
;
8192 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8193 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
8194 R_PPC64_TPREL16_LO
);
8195 rel
[1].r_offset
+= 2;
8198 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
8202 rel
[1].r_offset
+= 4;
8204 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
8205 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8206 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
8207 if (tls_gd
== 0 || toc_symndx
!= 0)
8209 /* We changed the symbol. Start over in order
8210 to get h, sym, sec etc. right. */
8218 case R_PPC64_DTPMOD64
:
8219 if (rel
+ 1 < relend
8220 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
8221 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8223 if ((tls_mask
& TLS_GD
) == 0)
8225 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
8226 if ((tls_mask
& TLS_TPRELGD
) != 0)
8227 r_type
= R_PPC64_TPREL64
;
8230 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
8231 r_type
= R_PPC64_NONE
;
8233 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8238 if ((tls_mask
& TLS_LD
) == 0)
8240 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
8241 r_type
= R_PPC64_NONE
;
8242 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8247 case R_PPC64_TPREL64
:
8248 if ((tls_mask
& TLS_TPREL
) == 0)
8250 r_type
= R_PPC64_NONE
;
8251 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
8256 /* Handle other relocations that tweak non-addend part of insn. */
8258 max_br_offset
= 1 << 25;
8259 addend
= rel
->r_addend
;
8265 /* Branch taken prediction relocations. */
8266 case R_PPC64_ADDR14_BRTAKEN
:
8267 case R_PPC64_REL14_BRTAKEN
:
8268 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
8271 /* Branch not taken prediction relocations. */
8272 case R_PPC64_ADDR14_BRNTAKEN
:
8273 case R_PPC64_REL14_BRNTAKEN
:
8274 insn
|= bfd_get_32 (output_bfd
,
8275 contents
+ rel
->r_offset
) & ~(0x01 << 21);
8279 max_br_offset
= 1 << 15;
8283 /* Calls to functions with a different TOC, such as calls to
8284 shared objects, need to alter the TOC pointer. This is
8285 done using a linkage stub. A REL24 branching to these
8286 linkage stubs needs to be followed by a nop, as the nop
8287 will be replaced with an instruction to restore the TOC
8292 && (((fdh
= &((struct ppc_link_hash_entry
*) h
)->oh
->elf
) != NULL
8293 && fdh
->plt
.plist
!= NULL
)
8294 || (fdh
= h
)->plt
.plist
!= NULL
))
8296 && sec
->output_section
!= NULL
8297 && sec
->id
<= htab
->top_id
8298 && (htab
->stub_group
[sec
->id
].toc_off
8299 != htab
->stub_group
[input_section
->id
].toc_off
)))
8300 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
8302 && (stub_entry
->stub_type
== ppc_stub_plt_call
8303 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
8304 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
8306 bfd_boolean can_plt_call
= FALSE
;
8308 if (rel
->r_offset
+ 8 <= input_section
->size
)
8311 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
8313 || nop
== CROR_151515
|| nop
== CROR_313131
)
8315 bfd_put_32 (input_bfd
, LD_R2_40R1
,
8316 contents
+ rel
->r_offset
+ 4);
8317 can_plt_call
= TRUE
;
8323 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8325 /* If this is a plain branch rather than a branch
8326 and link, don't require a nop. */
8328 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8330 can_plt_call
= TRUE
;
8333 && strcmp (h
->root
.root
.string
,
8334 ".__libc_start_main") == 0)
8336 /* Allow crt1 branch to go via a toc adjusting stub. */
8337 can_plt_call
= TRUE
;
8341 if (strcmp (input_section
->output_section
->name
,
8343 || strcmp (input_section
->output_section
->name
,
8345 (*_bfd_error_handler
)
8346 (_("%B(%A+0x%lx): automatic multiple TOCs "
8347 "not supported using your crt files; "
8348 "recompile with -mminimal-toc or upgrade gcc"),
8351 (long) rel
->r_offset
);
8353 (*_bfd_error_handler
)
8354 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
8355 "does not allow automatic multiple TOCs; "
8356 "recompile with -mminimal-toc or "
8357 "-fno-optimize-sibling-calls, "
8358 "or make `%s' extern"),
8361 (long) rel
->r_offset
,
8364 bfd_set_error (bfd_error_bad_value
);
8370 && stub_entry
->stub_type
== ppc_stub_plt_call
)
8371 unresolved_reloc
= FALSE
;
8374 if (stub_entry
== NULL
8375 && get_opd_info (sec
) != NULL
)
8377 /* The branch destination is the value of the opd entry. */
8378 bfd_vma off
= (relocation
- sec
->output_section
->vma
8379 - sec
->output_offset
+ rel
->r_addend
);
8380 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
8381 if (dest
!= (bfd_vma
) -1)
8388 /* If the branch is out of reach we ought to have a long
8390 from
= (rel
->r_offset
8391 + input_section
->output_offset
8392 + input_section
->output_section
->vma
);
8394 if (stub_entry
== NULL
8395 && (relocation
+ rel
->r_addend
- from
+ max_br_offset
8396 >= 2 * max_br_offset
)
8397 && r_type
!= R_PPC64_ADDR14_BRTAKEN
8398 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
8399 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
, htab
);
8401 if (stub_entry
!= NULL
)
8403 /* Munge up the value and addend so that we call the stub
8404 rather than the procedure directly. */
8405 relocation
= (stub_entry
->stub_offset
8406 + stub_entry
->stub_sec
->output_offset
8407 + stub_entry
->stub_sec
->output_section
->vma
);
8415 /* Set 'a' bit. This is 0b00010 in BO field for branch
8416 on CR(BI) insns (BO == 001at or 011at), and 0b01000
8417 for branch on CTR insns (BO == 1a00t or 1a01t). */
8418 if ((insn
& (0x14 << 21)) == (0x04 << 21))
8420 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
8427 /* Invert 'y' bit if not the default. */
8428 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8432 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8435 /* NOP out calls to undefined weak functions.
8436 We can thus call a weak function without first
8437 checking whether the function is defined. */
8439 && h
->root
.type
== bfd_link_hash_undefweak
8440 && r_type
== R_PPC64_REL24
8442 && rel
->r_addend
== 0)
8444 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
8455 (*_bfd_error_handler
)
8456 (_("%B: unknown relocation type %d for symbol %s"),
8457 input_bfd
, (int) r_type
, sym_name
);
8459 bfd_set_error (bfd_error_bad_value
);
8465 case R_PPC64_GNU_VTINHERIT
:
8466 case R_PPC64_GNU_VTENTRY
:
8469 /* GOT16 relocations. Like an ADDR16 using the symbol's
8470 address in the GOT as relocation value instead of the
8471 symbol's value itself. Also, create a GOT entry for the
8472 symbol and put the symbol value there. */
8473 case R_PPC64_GOT_TLSGD16
:
8474 case R_PPC64_GOT_TLSGD16_LO
:
8475 case R_PPC64_GOT_TLSGD16_HI
:
8476 case R_PPC64_GOT_TLSGD16_HA
:
8477 tls_type
= TLS_TLS
| TLS_GD
;
8480 case R_PPC64_GOT_TLSLD16
:
8481 case R_PPC64_GOT_TLSLD16_LO
:
8482 case R_PPC64_GOT_TLSLD16_HI
:
8483 case R_PPC64_GOT_TLSLD16_HA
:
8484 tls_type
= TLS_TLS
| TLS_LD
;
8487 case R_PPC64_GOT_TPREL16_DS
:
8488 case R_PPC64_GOT_TPREL16_LO_DS
:
8489 case R_PPC64_GOT_TPREL16_HI
:
8490 case R_PPC64_GOT_TPREL16_HA
:
8491 tls_type
= TLS_TLS
| TLS_TPREL
;
8494 case R_PPC64_GOT_DTPREL16_DS
:
8495 case R_PPC64_GOT_DTPREL16_LO_DS
:
8496 case R_PPC64_GOT_DTPREL16_HI
:
8497 case R_PPC64_GOT_DTPREL16_HA
:
8498 tls_type
= TLS_TLS
| TLS_DTPREL
;
8502 case R_PPC64_GOT16_LO
:
8503 case R_PPC64_GOT16_HI
:
8504 case R_PPC64_GOT16_HA
:
8505 case R_PPC64_GOT16_DS
:
8506 case R_PPC64_GOT16_LO_DS
:
8509 /* Relocation is to the entry for this symbol in the global
8514 unsigned long indx
= 0;
8516 if (tls_type
== (TLS_TLS
| TLS_LD
)
8518 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
8519 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
8522 struct got_entry
*ent
;
8526 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
8527 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8529 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8530 /* This is actually a static link, or it is a
8531 -Bsymbolic link and the symbol is defined
8532 locally, or the symbol was forced to be local
8533 because of a version file. */
8538 unresolved_reloc
= FALSE
;
8544 if (local_got_ents
== NULL
)
8546 ent
= local_got_ents
[r_symndx
];
8549 for (; ent
!= NULL
; ent
= ent
->next
)
8550 if (ent
->addend
== rel
->r_addend
8551 && ent
->owner
== input_bfd
8552 && ent
->tls_type
== tls_type
)
8556 offp
= &ent
->got
.offset
;
8559 got
= ppc64_elf_tdata (input_bfd
)->got
;
8563 /* The offset must always be a multiple of 8. We use the
8564 least significant bit to record whether we have already
8565 processed this entry. */
8571 /* Generate relocs for the dynamic linker, except in
8572 the case of TLSLD where we'll use one entry per
8574 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
8577 if ((info
->shared
|| indx
!= 0)
8579 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8580 || h
->root
.type
!= bfd_link_hash_undefweak
))
8582 outrel
.r_offset
= (got
->output_section
->vma
8583 + got
->output_offset
8585 outrel
.r_addend
= rel
->r_addend
;
8586 if (tls_type
& (TLS_LD
| TLS_GD
))
8588 outrel
.r_addend
= 0;
8589 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
8590 if (tls_type
== (TLS_TLS
| TLS_GD
))
8592 loc
= relgot
->contents
;
8593 loc
+= (relgot
->reloc_count
++
8594 * sizeof (Elf64_External_Rela
));
8595 bfd_elf64_swap_reloca_out (output_bfd
,
8597 outrel
.r_offset
+= 8;
8598 outrel
.r_addend
= rel
->r_addend
;
8600 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
8603 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
8604 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
8605 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
8606 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
8609 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
8611 /* Write the .got section contents for the sake
8613 loc
= got
->contents
+ off
;
8614 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
8618 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
8620 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
8622 outrel
.r_addend
+= relocation
;
8623 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8624 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8626 loc
= relgot
->contents
;
8627 loc
+= (relgot
->reloc_count
++
8628 * sizeof (Elf64_External_Rela
));
8629 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
8632 /* Init the .got section contents here if we're not
8633 emitting a reloc. */
8636 relocation
+= rel
->r_addend
;
8637 if (tls_type
== (TLS_TLS
| TLS_LD
))
8639 else if (tls_type
!= 0)
8641 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8642 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
8643 relocation
+= DTP_OFFSET
- TP_OFFSET
;
8645 if (tls_type
== (TLS_TLS
| TLS_GD
))
8647 bfd_put_64 (output_bfd
, relocation
,
8648 got
->contents
+ off
+ 8);
8653 bfd_put_64 (output_bfd
, relocation
,
8654 got
->contents
+ off
);
8658 if (off
>= (bfd_vma
) -2)
8661 relocation
= got
->output_offset
+ off
;
8663 /* TOC base (r2) is TOC start plus 0x8000. */
8664 addend
= -TOC_BASE_OFF
;
8668 case R_PPC64_PLT16_HA
:
8669 case R_PPC64_PLT16_HI
:
8670 case R_PPC64_PLT16_LO
:
8673 /* Relocation is to the entry for this symbol in the
8674 procedure linkage table. */
8676 /* Resolve a PLT reloc against a local symbol directly,
8677 without using the procedure linkage table. */
8681 /* It's possible that we didn't make a PLT entry for this
8682 symbol. This happens when statically linking PIC code,
8683 or when using -Bsymbolic. Go find a match if there is a
8685 if (htab
->plt
!= NULL
)
8687 struct plt_entry
*ent
;
8688 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8689 if (ent
->addend
== rel
->r_addend
8690 && ent
->plt
.offset
!= (bfd_vma
) -1)
8692 relocation
= (htab
->plt
->output_section
->vma
8693 + htab
->plt
->output_offset
8695 unresolved_reloc
= FALSE
;
8701 /* Relocation value is TOC base. */
8702 relocation
= TOCstart
;
8704 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
8705 else if (unresolved_reloc
)
8707 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
8708 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
8710 unresolved_reloc
= TRUE
;
8713 /* TOC16 relocs. We want the offset relative to the TOC base,
8714 which is the address of the start of the TOC plus 0x8000.
8715 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8718 case R_PPC64_TOC16_LO
:
8719 case R_PPC64_TOC16_HI
:
8720 case R_PPC64_TOC16_DS
:
8721 case R_PPC64_TOC16_LO_DS
:
8722 case R_PPC64_TOC16_HA
:
8723 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
8726 /* Relocate against the beginning of the section. */
8727 case R_PPC64_SECTOFF
:
8728 case R_PPC64_SECTOFF_LO
:
8729 case R_PPC64_SECTOFF_HI
:
8730 case R_PPC64_SECTOFF_DS
:
8731 case R_PPC64_SECTOFF_LO_DS
:
8732 case R_PPC64_SECTOFF_HA
:
8734 addend
-= sec
->output_section
->vma
;
8738 case R_PPC64_REL14_BRNTAKEN
:
8739 case R_PPC64_REL14_BRTAKEN
:
8743 case R_PPC64_TPREL16
:
8744 case R_PPC64_TPREL16_LO
:
8745 case R_PPC64_TPREL16_HI
:
8746 case R_PPC64_TPREL16_HA
:
8747 case R_PPC64_TPREL16_DS
:
8748 case R_PPC64_TPREL16_LO_DS
:
8749 case R_PPC64_TPREL16_HIGHER
:
8750 case R_PPC64_TPREL16_HIGHERA
:
8751 case R_PPC64_TPREL16_HIGHEST
:
8752 case R_PPC64_TPREL16_HIGHESTA
:
8753 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8755 /* The TPREL16 relocs shouldn't really be used in shared
8756 libs as they will result in DT_TEXTREL being set, but
8757 support them anyway. */
8761 case R_PPC64_DTPREL16
:
8762 case R_PPC64_DTPREL16_LO
:
8763 case R_PPC64_DTPREL16_HI
:
8764 case R_PPC64_DTPREL16_HA
:
8765 case R_PPC64_DTPREL16_DS
:
8766 case R_PPC64_DTPREL16_LO_DS
:
8767 case R_PPC64_DTPREL16_HIGHER
:
8768 case R_PPC64_DTPREL16_HIGHERA
:
8769 case R_PPC64_DTPREL16_HIGHEST
:
8770 case R_PPC64_DTPREL16_HIGHESTA
:
8771 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8774 case R_PPC64_DTPMOD64
:
8779 case R_PPC64_TPREL64
:
8780 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8783 case R_PPC64_DTPREL64
:
8784 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8787 /* Relocations that may need to be propagated if this is a
8792 case R_PPC64_ADDR14
:
8793 case R_PPC64_ADDR14_BRNTAKEN
:
8794 case R_PPC64_ADDR14_BRTAKEN
:
8795 case R_PPC64_ADDR16
:
8796 case R_PPC64_ADDR16_DS
:
8797 case R_PPC64_ADDR16_HA
:
8798 case R_PPC64_ADDR16_HI
:
8799 case R_PPC64_ADDR16_HIGHER
:
8800 case R_PPC64_ADDR16_HIGHERA
:
8801 case R_PPC64_ADDR16_HIGHEST
:
8802 case R_PPC64_ADDR16_HIGHESTA
:
8803 case R_PPC64_ADDR16_LO
:
8804 case R_PPC64_ADDR16_LO_DS
:
8805 case R_PPC64_ADDR24
:
8806 case R_PPC64_ADDR32
:
8807 case R_PPC64_ADDR64
:
8808 case R_PPC64_UADDR16
:
8809 case R_PPC64_UADDR32
:
8810 case R_PPC64_UADDR64
:
8811 /* r_symndx will be zero only for relocs against symbols
8812 from removed linkonce sections, or sections discarded by
8820 if ((input_section
->flags
& SEC_ALLOC
) == 0)
8823 if (NO_OPD_RELOCS
&& is_opd
)
8828 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8829 || h
->root
.type
!= bfd_link_hash_undefweak
)
8830 && (MUST_BE_DYN_RELOC (r_type
)
8831 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8832 || (ELIMINATE_COPY_RELOCS
8836 && (h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
8837 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
8838 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0))
8840 Elf_Internal_Rela outrel
;
8841 bfd_boolean skip
, relocate
;
8846 /* When generating a dynamic object, these relocations
8847 are copied into the output file to be resolved at run
8853 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
8854 input_section
, rel
->r_offset
);
8855 if (out_off
== (bfd_vma
) -1)
8857 else if (out_off
== (bfd_vma
) -2)
8858 skip
= TRUE
, relocate
= TRUE
;
8859 out_off
+= (input_section
->output_section
->vma
8860 + input_section
->output_offset
);
8861 outrel
.r_offset
= out_off
;
8862 outrel
.r_addend
= rel
->r_addend
;
8864 /* Optimize unaligned reloc use. */
8865 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
8866 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
8867 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
8868 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
8869 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
8870 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
8871 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
8872 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
8873 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
8876 memset (&outrel
, 0, sizeof outrel
);
8877 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
)
8879 && r_type
!= R_PPC64_TOC
)
8880 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
8883 /* This symbol is local, or marked to become local,
8884 or this is an opd section reloc which must point
8885 at a local function. */
8886 outrel
.r_addend
+= relocation
;
8887 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
8889 if (is_opd
&& h
!= NULL
)
8891 /* Lie about opd entries. This case occurs
8892 when building shared libraries and we
8893 reference a function in another shared
8894 lib. The same thing happens for a weak
8895 definition in an application that's
8896 overridden by a strong definition in a
8897 shared lib. (I believe this is a generic
8898 bug in binutils handling of weak syms.)
8899 In these cases we won't use the opd
8900 entry in this lib. */
8901 unresolved_reloc
= FALSE
;
8903 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8905 /* We need to relocate .opd contents for ld.so.
8906 Prelink also wants simple and consistent rules
8907 for relocs. This make all RELATIVE relocs have
8908 *r_offset equal to r_addend. */
8915 if (bfd_is_abs_section (sec
))
8917 else if (sec
== NULL
|| sec
->owner
== NULL
)
8919 bfd_set_error (bfd_error_bad_value
);
8926 osec
= sec
->output_section
;
8927 indx
= elf_section_data (osec
)->dynindx
;
8929 /* We are turning this relocation into one
8930 against a section symbol, so subtract out
8931 the output section's address but not the
8932 offset of the input section in the output
8934 outrel
.r_addend
-= osec
->vma
;
8937 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
8941 sreloc
= elf_section_data (input_section
)->sreloc
;
8945 loc
= sreloc
->contents
;
8946 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8947 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
8949 /* If this reloc is against an external symbol, it will
8950 be computed at runtime, so there's no need to do
8951 anything now. However, for the sake of prelink ensure
8952 that the section contents are a known value. */
8955 unresolved_reloc
= FALSE
;
8956 /* The value chosen here is quite arbitrary as ld.so
8957 ignores section contents except for the special
8958 case of .opd where the contents might be accessed
8959 before relocation. Choose zero, as that won't
8960 cause reloc overflow. */
8963 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8964 to improve backward compatibility with older
8966 if (r_type
== R_PPC64_ADDR64
)
8967 addend
= outrel
.r_addend
;
8968 /* Adjust pc_relative relocs to have zero in *r_offset. */
8969 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
8970 addend
= (input_section
->output_section
->vma
8971 + input_section
->output_offset
8978 case R_PPC64_GLOB_DAT
:
8979 case R_PPC64_JMP_SLOT
:
8980 case R_PPC64_RELATIVE
:
8981 /* We shouldn't ever see these dynamic relocs in relocatable
8985 case R_PPC64_PLTGOT16
:
8986 case R_PPC64_PLTGOT16_DS
:
8987 case R_PPC64_PLTGOT16_HA
:
8988 case R_PPC64_PLTGOT16_HI
:
8989 case R_PPC64_PLTGOT16_LO
:
8990 case R_PPC64_PLTGOT16_LO_DS
:
8991 case R_PPC64_PLTREL32
:
8992 case R_PPC64_PLTREL64
:
8993 /* These ones haven't been implemented yet. */
8995 (*_bfd_error_handler
)
8996 (_("%B: relocation %s is not supported for symbol %s."),
8998 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
9000 bfd_set_error (bfd_error_invalid_operation
);
9005 /* Do any further special processing. */
9011 case R_PPC64_ADDR16_HA
:
9012 case R_PPC64_ADDR16_HIGHERA
:
9013 case R_PPC64_ADDR16_HIGHESTA
:
9014 case R_PPC64_GOT16_HA
:
9015 case R_PPC64_PLTGOT16_HA
:
9016 case R_PPC64_PLT16_HA
:
9017 case R_PPC64_TOC16_HA
:
9018 case R_PPC64_SECTOFF_HA
:
9019 case R_PPC64_TPREL16_HA
:
9020 case R_PPC64_DTPREL16_HA
:
9021 case R_PPC64_GOT_TLSGD16_HA
:
9022 case R_PPC64_GOT_TLSLD16_HA
:
9023 case R_PPC64_GOT_TPREL16_HA
:
9024 case R_PPC64_GOT_DTPREL16_HA
:
9025 case R_PPC64_TPREL16_HIGHER
:
9026 case R_PPC64_TPREL16_HIGHERA
:
9027 case R_PPC64_TPREL16_HIGHEST
:
9028 case R_PPC64_TPREL16_HIGHESTA
:
9029 case R_PPC64_DTPREL16_HIGHER
:
9030 case R_PPC64_DTPREL16_HIGHERA
:
9031 case R_PPC64_DTPREL16_HIGHEST
:
9032 case R_PPC64_DTPREL16_HIGHESTA
:
9033 /* It's just possible that this symbol is a weak symbol
9034 that's not actually defined anywhere. In that case,
9035 'sec' would be NULL, and we should leave the symbol
9036 alone (it will be set to zero elsewhere in the link). */
9038 /* Add 0x10000 if sign bit in 0:15 is set.
9039 Bits 0:15 are not used. */
9043 case R_PPC64_ADDR16_DS
:
9044 case R_PPC64_ADDR16_LO_DS
:
9045 case R_PPC64_GOT16_DS
:
9046 case R_PPC64_GOT16_LO_DS
:
9047 case R_PPC64_PLT16_LO_DS
:
9048 case R_PPC64_SECTOFF_DS
:
9049 case R_PPC64_SECTOFF_LO_DS
:
9050 case R_PPC64_TOC16_DS
:
9051 case R_PPC64_TOC16_LO_DS
:
9052 case R_PPC64_PLTGOT16_DS
:
9053 case R_PPC64_PLTGOT16_LO_DS
:
9054 case R_PPC64_GOT_TPREL16_DS
:
9055 case R_PPC64_GOT_TPREL16_LO_DS
:
9056 case R_PPC64_GOT_DTPREL16_DS
:
9057 case R_PPC64_GOT_DTPREL16_LO_DS
:
9058 case R_PPC64_TPREL16_DS
:
9059 case R_PPC64_TPREL16_LO_DS
:
9060 case R_PPC64_DTPREL16_DS
:
9061 case R_PPC64_DTPREL16_LO_DS
:
9062 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9064 /* If this reloc is against an lq insn, then the value must be
9065 a multiple of 16. This is somewhat of a hack, but the
9066 "correct" way to do this by defining _DQ forms of all the
9067 _DS relocs bloats all reloc switches in this file. It
9068 doesn't seem to make much sense to use any of these relocs
9069 in data, so testing the insn should be safe. */
9070 if ((insn
& (0x3f << 26)) == (56u << 26))
9072 if (((relocation
+ addend
) & mask
) != 0)
9074 (*_bfd_error_handler
)
9075 (_("%B: error: relocation %s not a multiple of %d"),
9077 ppc64_elf_howto_table
[r_type
]->name
,
9079 bfd_set_error (bfd_error_bad_value
);
9086 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9087 because such sections are not SEC_ALLOC and thus ld.so will
9088 not process them. */
9089 if (unresolved_reloc
9090 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9091 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
9093 (*_bfd_error_handler
)
9094 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9097 (long) rel
->r_offset
,
9098 ppc64_elf_howto_table
[(int) r_type
]->name
,
9099 h
->root
.root
.string
);
9103 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
9111 if (r
!= bfd_reloc_ok
)
9113 if (sym_name
== NULL
)
9114 sym_name
= "(null)";
9115 if (r
== bfd_reloc_overflow
)
9120 && h
->root
.type
== bfd_link_hash_undefweak
9121 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
9123 /* Assume this is a call protected by other code that
9124 detects the symbol is undefined. If this is the case,
9125 we can safely ignore the overflow. If not, the
9126 program is hosed anyway, and a little warning isn't
9132 if (!((*info
->callbacks
->reloc_overflow
)
9133 (info
, sym_name
, ppc64_elf_howto_table
[r_type
]->name
,
9134 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
9139 (*_bfd_error_handler
)
9140 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9143 (long) rel
->r_offset
,
9144 ppc64_elf_howto_table
[r_type
]->name
,
9155 /* Adjust the value of any local symbols in opd sections. */
9158 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
9159 const char *name ATTRIBUTE_UNUSED
,
9160 Elf_Internal_Sym
*elfsym
,
9161 asection
*input_sec
,
9162 struct elf_link_hash_entry
*h
)
9164 long *opd_adjust
, adjust
;
9170 opd_adjust
= get_opd_info (input_sec
);
9171 if (opd_adjust
== NULL
)
9174 value
= elfsym
->st_value
- input_sec
->output_offset
;
9175 if (!info
->relocatable
)
9176 value
-= input_sec
->output_section
->vma
;
9178 adjust
= opd_adjust
[value
/ 24];
9180 elfsym
->st_value
= 0;
9182 elfsym
->st_value
+= adjust
;
9186 /* Finish up dynamic symbol handling. We set the contents of various
9187 dynamic sections here. */
9190 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9191 struct bfd_link_info
*info
,
9192 struct elf_link_hash_entry
*h
,
9193 Elf_Internal_Sym
*sym
)
9195 struct ppc_link_hash_table
*htab
;
9197 struct plt_entry
*ent
;
9198 Elf_Internal_Rela rela
;
9201 htab
= ppc_hash_table (info
);
9202 dynobj
= htab
->elf
.dynobj
;
9204 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9205 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9207 /* This symbol has an entry in the procedure linkage
9208 table. Set it up. */
9210 if (htab
->plt
== NULL
9211 || htab
->relplt
== NULL
9212 || htab
->glink
== NULL
)
9215 /* Create a JMP_SLOT reloc to inform the dynamic linker to
9216 fill in the PLT entry. */
9217 rela
.r_offset
= (htab
->plt
->output_section
->vma
9218 + htab
->plt
->output_offset
9220 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
9221 rela
.r_addend
= ent
->addend
;
9223 loc
= htab
->relplt
->contents
;
9224 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
9225 * sizeof (Elf64_External_Rela
));
9226 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
9229 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
9231 Elf_Internal_Rela rela
;
9234 /* This symbol needs a copy reloc. Set it up. */
9236 if (h
->dynindx
== -1
9237 || (h
->root
.type
!= bfd_link_hash_defined
9238 && h
->root
.type
!= bfd_link_hash_defweak
)
9239 || htab
->relbss
== NULL
)
9242 rela
.r_offset
= (h
->root
.u
.def
.value
9243 + h
->root
.u
.def
.section
->output_section
->vma
9244 + h
->root
.u
.def
.section
->output_offset
);
9245 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
9247 loc
= htab
->relbss
->contents
;
9248 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
9249 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
9252 /* Mark some specially defined symbols as absolute. */
9253 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
9254 sym
->st_shndx
= SHN_ABS
;
9259 /* Used to decide how to sort relocs in an optimal manner for the
9260 dynamic linker, before writing them out. */
9262 static enum elf_reloc_type_class
9263 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
9265 enum elf_ppc64_reloc_type r_type
;
9267 r_type
= ELF64_R_TYPE (rela
->r_info
);
9270 case R_PPC64_RELATIVE
:
9271 return reloc_class_relative
;
9272 case R_PPC64_JMP_SLOT
:
9273 return reloc_class_plt
;
9275 return reloc_class_copy
;
9277 return reloc_class_normal
;
9281 /* Finish up the dynamic sections. */
9284 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
9285 struct bfd_link_info
*info
)
9287 struct ppc_link_hash_table
*htab
;
9291 htab
= ppc_hash_table (info
);
9292 dynobj
= htab
->elf
.dynobj
;
9293 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
9295 if (htab
->elf
.dynamic_sections_created
)
9297 Elf64_External_Dyn
*dyncon
, *dynconend
;
9299 if (sdyn
== NULL
|| htab
->got
== NULL
)
9302 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
9303 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9304 for (; dyncon
< dynconend
; dyncon
++)
9306 Elf_Internal_Dyn dyn
;
9309 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9316 case DT_PPC64_GLINK
:
9318 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9319 /* We stupidly defined DT_PPC64_GLINK to be the start
9320 of glink rather than the first entry point, which is
9321 what ld.so needs, and now have a bigger stub to
9322 support automatic multiple TOCs. */
9323 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
9327 s
= bfd_get_section_by_name (output_bfd
, ".opd");
9330 dyn
.d_un
.d_ptr
= s
->vma
;
9333 case DT_PPC64_OPDSZ
:
9334 s
= bfd_get_section_by_name (output_bfd
, ".opd");
9337 dyn
.d_un
.d_val
= s
->size
;
9342 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9347 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9351 dyn
.d_un
.d_val
= htab
->relplt
->size
;
9355 /* Don't count procedure linkage table relocs in the
9356 overall reloc count. */
9360 dyn
.d_un
.d_val
-= s
->size
;
9364 /* We may not be using the standard ELF linker script.
9365 If .rela.plt is the first .rela section, we adjust
9366 DT_RELA to not include it. */
9370 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
9372 dyn
.d_un
.d_ptr
+= s
->size
;
9376 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9380 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
9382 /* Fill in the first entry in the global offset table.
9383 We use it to hold the link-time TOCbase. */
9384 bfd_put_64 (output_bfd
,
9385 elf_gp (output_bfd
) + TOC_BASE_OFF
,
9386 htab
->got
->contents
);
9388 /* Set .got entry size. */
9389 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
9392 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9394 /* Set .plt entry size. */
9395 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
9399 /* We need to handle writing out multiple GOT sections ourselves,
9400 since we didn't add them to DYNOBJ. */
9401 while ((dynobj
= dynobj
->link_next
) != NULL
)
9404 s
= ppc64_elf_tdata (dynobj
)->got
;
9407 && s
->output_section
!= bfd_abs_section_ptr
9408 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
9409 s
->contents
, s
->output_offset
,
9412 s
= ppc64_elf_tdata (dynobj
)->relgot
;
9415 && s
->output_section
!= bfd_abs_section_ptr
9416 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
9417 s
->contents
, s
->output_offset
,
9425 #include "elf64-target.h"